From 9f7140bf23df90cdfd664dea0f0da7aacf8aeeb5 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Thu, 13 Mar 2025 18:22:53 +0200 Subject: iio: amplifiers: hmc425a: Remove not fully correct comment MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The OF match table can be used outside of OF-based platforms. Remove the (misleading) comment. Signed-off-by: Andy Shevchenko Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250313162254.416422-1-andriy.shevchenko@linux.intel.com Signed-off-by: Jonathan Cameron --- drivers/iio/amplifiers/hmc425a.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/iio/amplifiers/hmc425a.c b/drivers/iio/amplifiers/hmc425a.c index d9a359e1388a..e92d7f399e33 100644 --- a/drivers/iio/amplifiers/hmc425a.c +++ b/drivers/iio/amplifiers/hmc425a.c @@ -398,7 +398,6 @@ static int hmc425a_probe(struct platform_device *pdev) return devm_iio_device_register(&pdev->dev, indio_dev); } -/* Match table for of_platform binding */ static const struct of_device_id hmc425a_of_match[] = { { .compatible = "adi,hmc425a", .data = &hmc425a_chip_info_tbl[ID_HMC425A]}, -- cgit v1.2.3 From de67f28abe586fc26711389fe80c01b658020c2c Mon Sep 17 00:00:00 2001 From: David Lechner Date: Mon, 10 Mar 2025 15:43:04 -0500 Subject: iio: adc: ad4030: check scan_type for error MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Check scan_type for error ad4030_get_chan_scale(). Currently, this should never fail, but it is good practice to always check for errors in case of future changes. Calling iio_get_current_scan_type() is moved out of the if statement also to avoid potential issues with future changes instead of assuming that the non-differential case does not use extended scan_type. Reported-by: kernel test robot Reported-by: Dan Carpenter Closes: https://lore.kernel.org/r/202503040954.n6MhjSsV-lkp@intel.com/ Signed-off-by: David Lechner Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250310-iio-adc-ad4030-check-scan-type-err-v1-1-589e4ebd9711@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad4030.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/iio/adc/ad4030.c b/drivers/iio/adc/ad4030.c index 9a020680885d..af7a817e8273 100644 --- a/drivers/iio/adc/ad4030.c +++ b/drivers/iio/adc/ad4030.c @@ -390,16 +390,18 @@ static int ad4030_get_chan_scale(struct iio_dev *indio_dev, struct ad4030_state *st = iio_priv(indio_dev); const struct iio_scan_type *scan_type; + scan_type = iio_get_current_scan_type(indio_dev, st->chip->channels); + if (IS_ERR(scan_type)) + return PTR_ERR(scan_type); + if (chan->differential) { - scan_type = iio_get_current_scan_type(indio_dev, - st->chip->channels); *val = (st->vref_uv * 2) / MILLI; *val2 = scan_type->realbits; return IIO_VAL_FRACTIONAL_LOG2; } *val = st->vref_uv / MILLI; - *val2 = chan->scan_type.realbits; + *val2 = scan_type->realbits; return IIO_VAL_FRACTIONAL_LOG2; } -- cgit v1.2.3 From dc78e71d7c1534293eaf6d17c5ce83e547532cf9 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Mon, 10 Mar 2025 15:43:05 -0500 Subject: iio: adc: ad4030: remove some duplicate code MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Remove some duplicate code in the ad4030_get_chan_scale() function by simplifying the if statement. Signed-off-by: David Lechner Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250310-iio-adc-ad4030-check-scan-type-err-v1-2-589e4ebd9711@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad4030.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/drivers/iio/adc/ad4030.c b/drivers/iio/adc/ad4030.c index af7a817e8273..f24b46164a47 100644 --- a/drivers/iio/adc/ad4030.c +++ b/drivers/iio/adc/ad4030.c @@ -394,14 +394,13 @@ static int ad4030_get_chan_scale(struct iio_dev *indio_dev, if (IS_ERR(scan_type)) return PTR_ERR(scan_type); - if (chan->differential) { + if (chan->differential) *val = (st->vref_uv * 2) / MILLI; - *val2 = scan_type->realbits; - return IIO_VAL_FRACTIONAL_LOG2; - } + else + *val = st->vref_uv / MILLI; - *val = st->vref_uv / MILLI; *val2 = scan_type->realbits; + return IIO_VAL_FRACTIONAL_LOG2; } -- cgit v1.2.3 From efaa981e679ac0cbc8d89b69aa4595e422826329 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Mon, 10 Mar 2025 15:43:06 -0500 Subject: iio: adc: ad4030: move setting mode to update_scan_mode MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Move calling ad4030_set_mode() from the buffer preenable callback to the update_scan_mode callback. This doesn't change any functionality but is more logical since setting the mode is a function of the scan mask and doesn't require an "undo" operation when the buffer is disabled. Signed-off-by: David Lechner Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250310-iio-adc-ad4030-check-scan-type-err-v1-3-589e4ebd9711@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad4030.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/drivers/iio/adc/ad4030.c b/drivers/iio/adc/ad4030.c index f24b46164a47..c2117c7a296f 100644 --- a/drivers/iio/adc/ad4030.c +++ b/drivers/iio/adc/ad4030.c @@ -868,6 +868,12 @@ static int ad4030_get_current_scan_type(const struct iio_dev *indio_dev, return st->avg_log2 ? AD4030_SCAN_TYPE_AVG : AD4030_SCAN_TYPE_NORMAL; } +static int ad4030_update_scan_mode(struct iio_dev *indio_dev, + const unsigned long *scan_mask) +{ + return ad4030_set_mode(indio_dev, *scan_mask); +} + static const struct iio_info ad4030_iio_info = { .read_avail = ad4030_read_avail, .read_raw = ad4030_read_raw, @@ -875,13 +881,9 @@ static const struct iio_info ad4030_iio_info = { .debugfs_reg_access = ad4030_reg_access, .read_label = ad4030_read_label, .get_current_scan_type = ad4030_get_current_scan_type, + .update_scan_mode = ad4030_update_scan_mode, }; -static int ad4030_buffer_preenable(struct iio_dev *indio_dev) -{ - return ad4030_set_mode(indio_dev, *indio_dev->active_scan_mask); -} - static bool ad4030_validate_scan_mask(struct iio_dev *indio_dev, const unsigned long *scan_mask) { @@ -895,7 +897,6 @@ static bool ad4030_validate_scan_mask(struct iio_dev *indio_dev, } static const struct iio_buffer_setup_ops ad4030_buffer_setup_ops = { - .preenable = ad4030_buffer_preenable, .validate_scan_mask = ad4030_validate_scan_mask, }; -- cgit v1.2.3 From 15ffee89c7c6d8ac3509e301dd29bab687323133 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Mon, 10 Mar 2025 15:43:07 -0500 Subject: iio: adc: ad4030: don't store scan_type in state MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Move getting the scan_type to ad4030_conversion(). Previously, we were getting the scan_type in two other places, then storing it in the state struct before using it in ad4030_conversion(). This was a bit fragile against potential future changes since it isn't obvious that anything that could potentially change the scan_type would need to also update the state struct. Also, the non-obviousness of this led to a redundant call to iio_get_current_scan_type() in ad4030_single_conversion() since it also calls ad4030_set_mode() which in turn calls ad4030_conversion(). To simplify things, just call iio_get_current_scan_type() in ad4030_conversion() where the returned struct is actually used and don't bother storing it in the state struct. Signed-off-by: David Lechner Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250310-iio-adc-ad4030-check-scan-type-err-v1-4-589e4ebd9711@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad4030.c | 24 +++++++++--------------- 1 file changed, 9 insertions(+), 15 deletions(-) diff --git a/drivers/iio/adc/ad4030.c b/drivers/iio/adc/ad4030.c index c2117c7a296f..54ad74b96c9f 100644 --- a/drivers/iio/adc/ad4030.c +++ b/drivers/iio/adc/ad4030.c @@ -147,7 +147,6 @@ struct ad4030_state { struct spi_device *spi; struct regmap *regmap; const struct ad4030_chip_info *chip; - const struct iio_scan_type *current_scan_type; struct gpio_desc *cnv_gpio; int vref_uv; int vio_uv; @@ -562,11 +561,6 @@ static int ad4030_set_mode(struct iio_dev *indio_dev, unsigned long mask) st->mode = AD4030_OUT_DATA_MD_DIFF; } - st->current_scan_type = iio_get_current_scan_type(indio_dev, - st->chip->channels); - if (IS_ERR(st->current_scan_type)) - return PTR_ERR(st->current_scan_type); - return regmap_update_bits(st->regmap, AD4030_REG_MODES, AD4030_REG_MODES_MASK_OUT_DATA_MODE, st->mode); @@ -614,15 +608,20 @@ static void ad4030_extract_interleaved(u8 *src, u32 *ch0, u32 *ch1) static int ad4030_conversion(struct iio_dev *indio_dev) { struct ad4030_state *st = iio_priv(indio_dev); - unsigned char diff_realbytes = - BITS_TO_BYTES(st->current_scan_type->realbits); - unsigned char diff_storagebytes = - BITS_TO_BYTES(st->current_scan_type->storagebits); + const struct iio_scan_type *scan_type; + unsigned char diff_realbytes, diff_storagebytes; unsigned int bytes_to_read; unsigned long cnv_nb = BIT(st->avg_log2); unsigned int i; int ret; + scan_type = iio_get_current_scan_type(indio_dev, st->chip->channels); + if (IS_ERR(scan_type)) + return PTR_ERR(scan_type); + + diff_realbytes = BITS_TO_BYTES(scan_type->realbits); + diff_storagebytes = BITS_TO_BYTES(scan_type->storagebits); + /* Number of bytes for one differential channel */ bytes_to_read = diff_realbytes; /* Add one byte if we are using a differential + common byte mode */ @@ -673,11 +672,6 @@ static int ad4030_single_conversion(struct iio_dev *indio_dev, if (ret) return ret; - st->current_scan_type = iio_get_current_scan_type(indio_dev, - st->chip->channels); - if (IS_ERR(st->current_scan_type)) - return PTR_ERR(st->current_scan_type); - ret = ad4030_conversion(indio_dev); if (ret) return ret; -- cgit v1.2.3 From 9415c8b5b9b7ba927d98f80022a2890e8639e9e4 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Mon, 10 Mar 2025 15:43:08 -0500 Subject: iio: adc: ad4030: explain rearranging raw sample data MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add a comment explaining why the raw sample data is rearranged in the in the ad4030_conversion() function. It is not so obvious from the code why this is done. Signed-off-by: David Lechner Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250310-iio-adc-ad4030-check-scan-type-err-v1-5-589e4ebd9711@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad4030.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/iio/adc/ad4030.c b/drivers/iio/adc/ad4030.c index 54ad74b96c9f..636f9f33e66a 100644 --- a/drivers/iio/adc/ad4030.c +++ b/drivers/iio/adc/ad4030.c @@ -646,6 +646,12 @@ static int ad4030_conversion(struct iio_dev *indio_dev) &st->rx_data.dual.diff[0], &st->rx_data.dual.diff[1]); + /* + * If no common mode voltage channel is enabled, we can use the raw + * data as is. Otherwise, we need to rearrange the data a bit to match + * the natural alignment of the IIO buffer. + */ + if (st->mode != AD4030_OUT_DATA_MD_16_DIFF_8_COM && st->mode != AD4030_OUT_DATA_MD_24_DIFF_8_COM) return 0; -- cgit v1.2.3 From 289198fb51420def0f6fa88ed5808d0d38120ad0 Mon Sep 17 00:00:00 2001 From: Raviteja Laggyshetty Date: Tue, 15 Apr 2025 09:53:37 +0000 Subject: dt-bindings: interconnect: Add EPSS L3 compatible for SA8775P Add Epoch Subsystem (EPSS) L3 interconnect provider binding on SA8775P SoCs. The L3 instance on the SA8775P SoC is similar to those on SoCs like SM8250 and SC7280. These SoCs use the PERF register instead of L3_REG for programming the performance level, which is managed in the data associated with the target-specific compatibles. Since the hardware remains the same across all EPSS-supporting SoCs, the generic compatible is retained for all SoCs. Reviewed-by: Krzysztof Kozlowski Signed-off-by: Raviteja Laggyshetty Link: https://lore.kernel.org/r/20250415095343.32125-2-quic_rlaggysh@quicinc.com Signed-off-by: Georgi Djakov --- Documentation/devicetree/bindings/interconnect/qcom,osm-l3.yaml | 1 + 1 file changed, 1 insertion(+) diff --git a/Documentation/devicetree/bindings/interconnect/qcom,osm-l3.yaml b/Documentation/devicetree/bindings/interconnect/qcom,osm-l3.yaml index 4ac0863205b3..cd4bb912e0dc 100644 --- a/Documentation/devicetree/bindings/interconnect/qcom,osm-l3.yaml +++ b/Documentation/devicetree/bindings/interconnect/qcom,osm-l3.yaml @@ -28,6 +28,7 @@ properties: - const: qcom,osm-l3 - items: - enum: + - qcom,sa8775p-epss-l3 - qcom,sc7280-epss-l3 - qcom,sc8280xp-epss-l3 - qcom,sm6375-cpucp-l3 -- cgit v1.2.3 From d30f83d278a921485b3e877d03fe937bccfcbcdd Mon Sep 17 00:00:00 2001 From: Raviteja Laggyshetty Date: Tue, 15 Apr 2025 09:53:38 +0000 Subject: interconnect: core: Add dynamic id allocation support The current interconnect framework relies on static IDs for node creation and registration, which limits topologies with multiple instances of the same interconnect provider. To address this, introduce icc_node_create_dyn() and icc_link_nodes() APIs to dynamically allocate IDs for interconnect nodes during creation and link. This change removes the dependency on static IDs, allowing multiple instances of the same hardware, such as EPSS L3. Signed-off-by: Raviteja Laggyshetty Link: https://lore.kernel.org/r/20250415095343.32125-3-quic_rlaggysh@quicinc.com Signed-off-by: Georgi Djakov --- drivers/interconnect/core.c | 82 ++++++++++++++++++++++++++++++++++- include/linux/interconnect-provider.h | 12 +++++ include/linux/interconnect.h | 3 ++ 3 files changed, 96 insertions(+), 1 deletion(-) diff --git a/drivers/interconnect/core.c b/drivers/interconnect/core.c index 9d5404a07e8a..1a41e59c77f8 100644 --- a/drivers/interconnect/core.c +++ b/drivers/interconnect/core.c @@ -20,6 +20,8 @@ #include "internal.h" +#define ICC_DYN_ID_START 10000 + #define CREATE_TRACE_POINTS #include "trace.h" @@ -826,7 +828,12 @@ static struct icc_node *icc_node_create_nolock(int id) if (!node) return ERR_PTR(-ENOMEM); - id = idr_alloc(&icc_idr, node, id, id + 1, GFP_KERNEL); + /* dynamic id allocation */ + if (id == ICC_ALLOC_DYN_ID) + id = idr_alloc(&icc_idr, node, ICC_DYN_ID_START, 0, GFP_KERNEL); + else + id = idr_alloc(&icc_idr, node, id, id + 1, GFP_KERNEL); + if (id < 0) { WARN(1, "%s: couldn't get idr\n", __func__); kfree(node); @@ -838,6 +845,25 @@ static struct icc_node *icc_node_create_nolock(int id) return node; } +/** + * icc_node_create_dyn() - create a node with dynamic id + * + * Return: icc_node pointer on success, or ERR_PTR() on error + */ +struct icc_node *icc_node_create_dyn(void) +{ + struct icc_node *node; + + mutex_lock(&icc_lock); + + node = icc_node_create_nolock(ICC_ALLOC_DYN_ID); + + mutex_unlock(&icc_lock); + + return node; +} +EXPORT_SYMBOL_GPL(icc_node_create_dyn); + /** * icc_node_create() - create a node * @id: node id @@ -884,6 +910,56 @@ void icc_node_destroy(int id) } EXPORT_SYMBOL_GPL(icc_node_destroy); +/** + * icc_link_nodes() - create link between two nodes + * @src_node: source node + * @dst_node: destination node + * + * Create a link between two nodes. The nodes might belong to different + * interconnect providers and the @dst_node might not exist (if the + * provider driver has not probed yet). So just create the @dst_node + * and when the actual provider driver is probed, the rest of the node + * data is filled. + * + * Return: 0 on success, or an error code otherwise + */ +int icc_link_nodes(struct icc_node *src_node, struct icc_node **dst_node) +{ + struct icc_node **new; + int ret = 0; + + if (!src_node->provider) + return -EINVAL; + + mutex_lock(&icc_lock); + + if (!*dst_node) { + *dst_node = icc_node_create_nolock(ICC_ALLOC_DYN_ID); + + if (IS_ERR(*dst_node)) { + ret = PTR_ERR(*dst_node); + goto out; + } + } + + new = krealloc(src_node->links, + (src_node->num_links + 1) * sizeof(*src_node->links), + GFP_KERNEL); + if (!new) { + ret = -ENOMEM; + goto out; + } + + src_node->links = new; + src_node->links[src_node->num_links++] = *dst_node; + +out: + mutex_unlock(&icc_lock); + + return ret; +} +EXPORT_SYMBOL_GPL(icc_link_nodes); + /** * icc_link_create() - create a link between two nodes * @node: source node id @@ -962,6 +1038,10 @@ void icc_node_add(struct icc_node *node, struct icc_provider *provider) node->avg_bw = node->init_avg; node->peak_bw = node->init_peak; + if (node->id >= ICC_DYN_ID_START) + node->name = devm_kasprintf(provider->dev, GFP_KERNEL, "%s@%s", + node->name, dev_name(provider->dev)); + if (node->avg_bw || node->peak_bw) { if (provider->pre_aggregate) provider->pre_aggregate(node); diff --git a/include/linux/interconnect-provider.h b/include/linux/interconnect-provider.h index f5aef8784692..55cfebc658e6 100644 --- a/include/linux/interconnect-provider.h +++ b/include/linux/interconnect-provider.h @@ -116,8 +116,10 @@ struct icc_node { int icc_std_aggregate(struct icc_node *node, u32 tag, u32 avg_bw, u32 peak_bw, u32 *agg_avg, u32 *agg_peak); +struct icc_node *icc_node_create_dyn(void); struct icc_node *icc_node_create(int id); void icc_node_destroy(int id); +int icc_link_nodes(struct icc_node *src_node, struct icc_node **dst_node); int icc_link_create(struct icc_node *node, const int dst_id); void icc_node_add(struct icc_node *node, struct icc_provider *provider); void icc_node_del(struct icc_node *node); @@ -136,6 +138,11 @@ static inline int icc_std_aggregate(struct icc_node *node, u32 tag, u32 avg_bw, return -ENOTSUPP; } +static inline struct icc_node *icc_node_create_dyn(void) +{ + return ERR_PTR(-EOPNOTSUPP); +} + static inline struct icc_node *icc_node_create(int id) { return ERR_PTR(-ENOTSUPP); @@ -145,6 +152,11 @@ static inline void icc_node_destroy(int id) { } +static inline int icc_link_nodes(struct icc_node *src_node, struct icc_node **dst_node) +{ + return -EOPNOTSUPP; +} + static inline int icc_link_create(struct icc_node *node, const int dst_id) { return -ENOTSUPP; diff --git a/include/linux/interconnect.h b/include/linux/interconnect.h index 97ac253df62c..e4b8808823ad 100644 --- a/include/linux/interconnect.h +++ b/include/linux/interconnect.h @@ -20,6 +20,9 @@ #define Mbps_to_icc(x) ((x) * 1000 / 8) #define Gbps_to_icc(x) ((x) * 1000 * 1000 / 8) +/* macro to indicate dynamic id allocation */ +#define ICC_ALLOC_DYN_ID -1 + struct icc_path; struct device; -- cgit v1.2.3 From ac2c390650f554aa6571ac60f8e0aae519766069 Mon Sep 17 00:00:00 2001 From: Raviteja Laggyshetty Date: Tue, 15 Apr 2025 09:53:39 +0000 Subject: interconnect: qcom: Add multidev EPSS L3 support EPSS on SA8775P has two instances, necessitating the creation of two device nodes with different compatibles due to the unique ICC node ID and name limitations in the interconnect framework. Add multidevice support for the OSM-L3 provider to dynamically obtain unique node IDs and register with the framework. EPSS topology includes a single master-slave pair within the same provider, the node linking logic is simplified by directly connecting the master node to the slave node. Signed-off-by: Raviteja Laggyshetty Link: https://lore.kernel.org/r/20250415095343.32125-4-quic_rlaggysh@quicinc.com Signed-off-by: Georgi Djakov --- drivers/interconnect/qcom/osm-l3.c | 38 ++++++++++++-------------------------- 1 file changed, 12 insertions(+), 26 deletions(-) diff --git a/drivers/interconnect/qcom/osm-l3.c b/drivers/interconnect/qcom/osm-l3.c index 6a656ed44d49..baecbf2533f7 100644 --- a/drivers/interconnect/qcom/osm-l3.c +++ b/drivers/interconnect/qcom/osm-l3.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0 /* * Copyright (c) 2020-2021, The Linux Foundation. All rights reserved. + * Copyright (c) 2025 Qualcomm Innovation Center, Inc. All rights reserved. */ #include @@ -32,8 +33,6 @@ #define EPSS_REG_FREQ_LUT 0x100 #define EPSS_REG_PERF_STATE 0x320 -#define OSM_L3_MAX_LINKS 1 - #define to_osm_l3_provider(_provider) \ container_of(_provider, struct qcom_osm_l3_icc_provider, provider) @@ -48,16 +47,10 @@ struct qcom_osm_l3_icc_provider { /** * struct qcom_osm_l3_node - Qualcomm specific interconnect nodes * @name: the node name used in debugfs - * @links: an array of nodes where we can go next while traversing - * @id: a unique node identifier - * @num_links: the total number of @links * @buswidth: width of the interconnect between a node and the bus */ struct qcom_osm_l3_node { const char *name; - u16 links[OSM_L3_MAX_LINKS]; - u16 id; - u16 num_links; u16 buswidth; }; @@ -69,30 +62,22 @@ struct qcom_osm_l3_desc { unsigned int reg_perf_state; }; -enum { - OSM_L3_MASTER_NODE = 10000, - OSM_L3_SLAVE_NODE, -}; - -#define DEFINE_QNODE(_name, _id, _buswidth, ...) \ +#define DEFINE_QNODE(_name, _buswidth) \ static const struct qcom_osm_l3_node _name = { \ .name = #_name, \ - .id = _id, \ .buswidth = _buswidth, \ - .num_links = COUNT_ARGS(__VA_ARGS__), \ - .links = { __VA_ARGS__ }, \ } -DEFINE_QNODE(osm_l3_master, OSM_L3_MASTER_NODE, 16, OSM_L3_SLAVE_NODE); -DEFINE_QNODE(osm_l3_slave, OSM_L3_SLAVE_NODE, 16); +DEFINE_QNODE(osm_l3_slave, 16); +DEFINE_QNODE(osm_l3_master, 16); static const struct qcom_osm_l3_node * const osm_l3_nodes[] = { [MASTER_OSM_L3_APPS] = &osm_l3_master, [SLAVE_OSM_L3] = &osm_l3_slave, }; -DEFINE_QNODE(epss_l3_master, OSM_L3_MASTER_NODE, 32, OSM_L3_SLAVE_NODE); -DEFINE_QNODE(epss_l3_slave, OSM_L3_SLAVE_NODE, 32); +DEFINE_QNODE(epss_l3_slave, 32); +DEFINE_QNODE(epss_l3_master, 32); static const struct qcom_osm_l3_node * const epss_l3_nodes[] = { [MASTER_EPSS_L3_APPS] = &epss_l3_master, @@ -242,10 +227,10 @@ static int qcom_osm_l3_probe(struct platform_device *pdev) icc_provider_init(provider); + /* Create nodes */ for (i = 0; i < num_nodes; i++) { - size_t j; + node = icc_node_create_dyn(); - node = icc_node_create(qnodes[i]->id); if (IS_ERR(node)) { ret = PTR_ERR(node); goto err; @@ -256,12 +241,12 @@ static int qcom_osm_l3_probe(struct platform_device *pdev) node->data = (void *)qnodes[i]; icc_node_add(node, provider); - for (j = 0; j < qnodes[i]->num_links; j++) - icc_link_create(node, qnodes[i]->links[j]); - data->nodes[i] = node; } + /* Create link */ + icc_link_nodes(data->nodes[MASTER_OSM_L3_APPS], &data->nodes[SLAVE_OSM_L3]); + ret = icc_provider_register(provider); if (ret) goto err; @@ -278,6 +263,7 @@ err: static const struct of_device_id osm_l3_of_match[] = { { .compatible = "qcom,epss-l3", .data = &epss_l3_l3_vote }, { .compatible = "qcom,osm-l3", .data = &osm_l3 }, + { .compatible = "qcom,sa8775p-epss-l3", .data = &epss_l3_perf_state }, { .compatible = "qcom,sc7180-osm-l3", .data = &osm_l3 }, { .compatible = "qcom,sc7280-epss-l3", .data = &epss_l3_perf_state }, { .compatible = "qcom,sdm845-osm-l3", .data = &osm_l3 }, -- cgit v1.2.3 From 7f9560a3bebe42c6ec96b66a1650403be0bbc4b1 Mon Sep 17 00:00:00 2001 From: Raviteja Laggyshetty Date: Tue, 15 Apr 2025 09:53:40 +0000 Subject: interconnect: qcom: icc-rpmh: Add dynamic icc node id support Interconnect framework relies on static IDs for creating, linking and maintaning the topology. This dependency on static IDs prevents creating two instances of same provider. To overcome the dependency on static IDs, dynamic ID support is being added. To facilitate dynamic node ID support, the driver now uses node pointers for links instead of static node IDs and icc_node pointer is added as member in qcom_icc_node structure to track the node creation. Signed-off-by: Raviteja Laggyshetty Reviewed-by: Dmitry Baryshkov Link: https://lore.kernel.org/r/20250415095343.32125-5-quic_rlaggysh@quicinc.com Signed-off-by: Georgi Djakov --- drivers/interconnect/qcom/icc-rpmh.c | 17 ++++++++++++++--- drivers/interconnect/qcom/icc-rpmh.h | 5 +++++ 2 files changed, 19 insertions(+), 3 deletions(-) diff --git a/drivers/interconnect/qcom/icc-rpmh.c b/drivers/interconnect/qcom/icc-rpmh.c index f2d63745be54..41bfc6e7ee1d 100644 --- a/drivers/interconnect/qcom/icc-rpmh.c +++ b/drivers/interconnect/qcom/icc-rpmh.c @@ -280,7 +280,14 @@ int qcom_icc_rpmh_probe(struct platform_device *pdev) if (!qn) continue; - node = icc_node_create(qn->id); + if (desc->alloc_dyn_id) { + if (!qn->node) + qn->node = icc_node_create_dyn(); + node = qn->node; + } else { + node = icc_node_create(qn->id); + } + if (IS_ERR(node)) { ret = PTR_ERR(node); goto err_remove_nodes; @@ -290,8 +297,12 @@ int qcom_icc_rpmh_probe(struct platform_device *pdev) node->data = qn; icc_node_add(node, provider); - for (j = 0; j < qn->num_links; j++) - icc_link_create(node, qn->links[j]); + for (j = 0; j < qn->num_links; j++) { + if (desc->alloc_dyn_id) + icc_link_nodes(node, &qn->link_nodes[j]->node); + else + icc_link_create(node, qn->links[j]); + } data->nodes[i] = node; } diff --git a/drivers/interconnect/qcom/icc-rpmh.h b/drivers/interconnect/qcom/icc-rpmh.h index 82344c734091..bd8d730249b1 100644 --- a/drivers/interconnect/qcom/icc-rpmh.h +++ b/drivers/interconnect/qcom/icc-rpmh.h @@ -83,6 +83,8 @@ struct qcom_icc_qosbox { * @name: the node name used in debugfs * @links: an array of nodes where we can go next while traversing * @id: a unique node identifier + * @link_nodes: links associated with this node + * @node: icc_node associated with this node * @num_links: the total number of @links * @channels: num of channels at this node * @buswidth: width of the interconnect between a node and the bus @@ -96,6 +98,8 @@ struct qcom_icc_node { const char *name; u16 links[MAX_LINKS]; u16 id; + struct qcom_icc_node **link_nodes; + struct icc_node *node; u16 num_links; u16 channels; u16 buswidth; @@ -154,6 +158,7 @@ struct qcom_icc_desc { struct qcom_icc_bcm * const *bcms; size_t num_bcms; bool qos_requires_clocks; + bool alloc_dyn_id; }; int qcom_icc_aggregate(struct icc_node *node, u32 tag, u32 avg_bw, -- cgit v1.2.3 From b1244645ad6c79d89974c015abe552d47a42dbdc Mon Sep 17 00:00:00 2001 From: Raviteja Laggyshetty Date: Tue, 15 Apr 2025 09:53:41 +0000 Subject: interconnect: qcom: sa8775p: Add dynamic icc node id support To facilitate dynamic id allocation, discard the static IDs from node data and set alloc_dyn_id in descriptor structure to indicate dynamic ID allocation. Update the topology to use node pointers for links instead of static IDs and forward declare the node pointer to avoid undefined references. Signed-off-by: Raviteja Laggyshetty Reviewed-by: Dmitry Baryshkov Link: https://lore.kernel.org/r/20250415095343.32125-6-quic_rlaggysh@quicinc.com Signed-off-by: Georgi Djakov --- drivers/interconnect/qcom/sa8775p.c | 952 +++++++++++++----------------------- 1 file changed, 347 insertions(+), 605 deletions(-) diff --git a/drivers/interconnect/qcom/sa8775p.c b/drivers/interconnect/qcom/sa8775p.c index e2826af3ea2e..04b4abbf4487 100644 --- a/drivers/interconnect/qcom/sa8775p.c +++ b/drivers/interconnect/qcom/sa8775p.c @@ -15,1859 +15,1587 @@ #include "bcm-voter.h" #include "icc-rpmh.h" -#define SA8775P_MASTER_GPU_TCU 0 -#define SA8775P_MASTER_PCIE_TCU 1 -#define SA8775P_MASTER_SYS_TCU 2 -#define SA8775P_MASTER_APPSS_PROC 3 -#define SA8775P_MASTER_LLCC 4 -#define SA8775P_MASTER_CNOC_LPASS_AG_NOC 5 -#define SA8775P_MASTER_GIC_AHB 6 -#define SA8775P_MASTER_CDSP_NOC_CFG 7 -#define SA8775P_MASTER_CDSPB_NOC_CFG 8 -#define SA8775P_MASTER_QDSS_BAM 9 -#define SA8775P_MASTER_QUP_0 10 -#define SA8775P_MASTER_QUP_1 11 -#define SA8775P_MASTER_QUP_2 12 -#define SA8775P_MASTER_A1NOC_SNOC 13 -#define SA8775P_MASTER_A2NOC_SNOC 14 -#define SA8775P_MASTER_CAMNOC_HF 15 -#define SA8775P_MASTER_CAMNOC_ICP 16 -#define SA8775P_MASTER_CAMNOC_SF 17 -#define SA8775P_MASTER_COMPUTE_NOC 18 -#define SA8775P_MASTER_COMPUTE_NOC_1 19 -#define SA8775P_MASTER_CNOC_A2NOC 20 -#define SA8775P_MASTER_CNOC_DC_NOC 21 -#define SA8775P_MASTER_GEM_NOC_CFG 22 -#define SA8775P_MASTER_GEM_NOC_CNOC 23 -#define SA8775P_MASTER_GEM_NOC_PCIE_SNOC 24 -#define SA8775P_MASTER_GPDSP_SAIL 25 -#define SA8775P_MASTER_GFX3D 26 -#define SA8775P_MASTER_LPASS_ANOC 27 -#define SA8775P_MASTER_MDP0 28 -#define SA8775P_MASTER_MDP1 29 -#define SA8775P_MASTER_MDP_CORE1_0 30 -#define SA8775P_MASTER_MDP_CORE1_1 31 -#define SA8775P_MASTER_MNOC_HF_MEM_NOC 32 -#define SA8775P_MASTER_CNOC_MNOC_HF_CFG 33 -#define SA8775P_MASTER_MNOC_SF_MEM_NOC 34 -#define SA8775P_MASTER_CNOC_MNOC_SF_CFG 35 -#define SA8775P_MASTER_ANOC_PCIE_GEM_NOC 36 -#define SA8775P_MASTER_SNOC_CFG 37 -#define SA8775P_MASTER_SNOC_GC_MEM_NOC 38 -#define SA8775P_MASTER_SNOC_SF_MEM_NOC 39 -#define SA8775P_MASTER_VIDEO_P0 40 -#define SA8775P_MASTER_VIDEO_P1 41 -#define SA8775P_MASTER_VIDEO_PROC 42 -#define SA8775P_MASTER_VIDEO_V_PROC 43 -#define SA8775P_MASTER_QUP_CORE_0 44 -#define SA8775P_MASTER_QUP_CORE_1 45 -#define SA8775P_MASTER_QUP_CORE_2 46 -#define SA8775P_MASTER_QUP_CORE_3 47 -#define SA8775P_MASTER_CRYPTO_CORE0 48 -#define SA8775P_MASTER_CRYPTO_CORE1 49 -#define SA8775P_MASTER_DSP0 50 -#define SA8775P_MASTER_DSP1 51 -#define SA8775P_MASTER_IPA 52 -#define SA8775P_MASTER_LPASS_PROC 53 -#define SA8775P_MASTER_CDSP_PROC 54 -#define SA8775P_MASTER_CDSP_PROC_B 55 -#define SA8775P_MASTER_PIMEM 56 -#define SA8775P_MASTER_QUP_3 57 -#define SA8775P_MASTER_EMAC 58 -#define SA8775P_MASTER_EMAC_1 59 -#define SA8775P_MASTER_GIC 60 -#define SA8775P_MASTER_PCIE_0 61 -#define SA8775P_MASTER_PCIE_1 62 -#define SA8775P_MASTER_QDSS_ETR_0 63 -#define SA8775P_MASTER_QDSS_ETR_1 64 -#define SA8775P_MASTER_SDC 65 -#define SA8775P_MASTER_UFS_CARD 66 -#define SA8775P_MASTER_UFS_MEM 67 -#define SA8775P_MASTER_USB2 68 -#define SA8775P_MASTER_USB3_0 69 -#define SA8775P_MASTER_USB3_1 70 -#define SA8775P_SLAVE_EBI1 512 -#define SA8775P_SLAVE_AHB2PHY_0 513 -#define SA8775P_SLAVE_AHB2PHY_1 514 -#define SA8775P_SLAVE_AHB2PHY_2 515 -#define SA8775P_SLAVE_AHB2PHY_3 516 -#define SA8775P_SLAVE_ANOC_THROTTLE_CFG 517 -#define SA8775P_SLAVE_AOSS 518 -#define SA8775P_SLAVE_APPSS 519 -#define SA8775P_SLAVE_BOOT_ROM 520 -#define SA8775P_SLAVE_CAMERA_CFG 521 -#define SA8775P_SLAVE_CAMERA_NRT_THROTTLE_CFG 522 -#define SA8775P_SLAVE_CAMERA_RT_THROTTLE_CFG 523 -#define SA8775P_SLAVE_CLK_CTL 524 -#define SA8775P_SLAVE_CDSP_CFG 525 -#define SA8775P_SLAVE_CDSP1_CFG 526 -#define SA8775P_SLAVE_RBCPR_CX_CFG 527 -#define SA8775P_SLAVE_RBCPR_MMCX_CFG 528 -#define SA8775P_SLAVE_RBCPR_MX_CFG 529 -#define SA8775P_SLAVE_CPR_NSPCX 530 -#define SA8775P_SLAVE_CRYPTO_0_CFG 531 -#define SA8775P_SLAVE_CX_RDPM 532 -#define SA8775P_SLAVE_DISPLAY_CFG 533 -#define SA8775P_SLAVE_DISPLAY_RT_THROTTLE_CFG 534 -#define SA8775P_SLAVE_DISPLAY1_CFG 535 -#define SA8775P_SLAVE_DISPLAY1_RT_THROTTLE_CFG 536 -#define SA8775P_SLAVE_EMAC_CFG 537 -#define SA8775P_SLAVE_EMAC1_CFG 538 -#define SA8775P_SLAVE_GP_DSP0_CFG 539 -#define SA8775P_SLAVE_GP_DSP1_CFG 540 -#define SA8775P_SLAVE_GPDSP0_THROTTLE_CFG 541 -#define SA8775P_SLAVE_GPDSP1_THROTTLE_CFG 542 -#define SA8775P_SLAVE_GPU_TCU_THROTTLE_CFG 543 -#define SA8775P_SLAVE_GFX3D_CFG 544 -#define SA8775P_SLAVE_HWKM 545 -#define SA8775P_SLAVE_IMEM_CFG 546 -#define SA8775P_SLAVE_IPA_CFG 547 -#define SA8775P_SLAVE_IPC_ROUTER_CFG 548 -#define SA8775P_SLAVE_LLCC_CFG 549 -#define SA8775P_SLAVE_LPASS 550 -#define SA8775P_SLAVE_LPASS_CORE_CFG 551 -#define SA8775P_SLAVE_LPASS_LPI_CFG 552 -#define SA8775P_SLAVE_LPASS_MPU_CFG 553 -#define SA8775P_SLAVE_LPASS_THROTTLE_CFG 554 -#define SA8775P_SLAVE_LPASS_TOP_CFG 555 -#define SA8775P_SLAVE_MX_RDPM 556 -#define SA8775P_SLAVE_MXC_RDPM 557 -#define SA8775P_SLAVE_PCIE_0_CFG 558 -#define SA8775P_SLAVE_PCIE_1_CFG 559 -#define SA8775P_SLAVE_PCIE_RSC_CFG 560 -#define SA8775P_SLAVE_PCIE_TCU_THROTTLE_CFG 561 -#define SA8775P_SLAVE_PCIE_THROTTLE_CFG 562 -#define SA8775P_SLAVE_PDM 563 -#define SA8775P_SLAVE_PIMEM_CFG 564 -#define SA8775P_SLAVE_PKA_WRAPPER_CFG 565 -#define SA8775P_SLAVE_QDSS_CFG 566 -#define SA8775P_SLAVE_QM_CFG 567 -#define SA8775P_SLAVE_QM_MPU_CFG 568 -#define SA8775P_SLAVE_QUP_0 569 -#define SA8775P_SLAVE_QUP_1 570 -#define SA8775P_SLAVE_QUP_2 571 -#define SA8775P_SLAVE_QUP_3 572 -#define SA8775P_SLAVE_SAIL_THROTTLE_CFG 573 -#define SA8775P_SLAVE_SDC1 574 -#define SA8775P_SLAVE_SECURITY 575 -#define SA8775P_SLAVE_SNOC_THROTTLE_CFG 576 -#define SA8775P_SLAVE_TCSR 577 -#define SA8775P_SLAVE_TLMM 578 -#define SA8775P_SLAVE_TSC_CFG 579 -#define SA8775P_SLAVE_UFS_CARD_CFG 580 -#define SA8775P_SLAVE_UFS_MEM_CFG 581 -#define SA8775P_SLAVE_USB2 582 -#define SA8775P_SLAVE_USB3_0 583 -#define SA8775P_SLAVE_USB3_1 584 -#define SA8775P_SLAVE_VENUS_CFG 585 -#define SA8775P_SLAVE_VENUS_CVP_THROTTLE_CFG 586 -#define SA8775P_SLAVE_VENUS_V_CPU_THROTTLE_CFG 587 -#define SA8775P_SLAVE_VENUS_VCODEC_THROTTLE_CFG 588 -#define SA8775P_SLAVE_A1NOC_SNOC 589 -#define SA8775P_SLAVE_A2NOC_SNOC 590 -#define SA8775P_SLAVE_DDRSS_CFG 591 -#define SA8775P_SLAVE_GEM_NOC_CNOC 592 -#define SA8775P_SLAVE_GEM_NOC_CFG 593 -#define SA8775P_SLAVE_SNOC_GEM_NOC_GC 594 -#define SA8775P_SLAVE_SNOC_GEM_NOC_SF 595 -#define SA8775P_SLAVE_GP_DSP_SAIL_NOC 596 -#define SA8775P_SLAVE_GPDSP_NOC_CFG 597 -#define SA8775P_SLAVE_HCP_A 598 -#define SA8775P_SLAVE_LLCC 599 -#define SA8775P_SLAVE_MNOC_HF_MEM_NOC 600 -#define SA8775P_SLAVE_MNOC_SF_MEM_NOC 601 -#define SA8775P_SLAVE_CNOC_MNOC_HF_CFG 602 -#define SA8775P_SLAVE_CNOC_MNOC_SF_CFG 603 -#define SA8775P_SLAVE_CDSP_MEM_NOC 604 -#define SA8775P_SLAVE_CDSPB_MEM_NOC 605 -#define SA8775P_SLAVE_HCP_B 606 -#define SA8775P_SLAVE_GEM_NOC_PCIE_CNOC 607 -#define SA8775P_SLAVE_PCIE_ANOC_CFG 608 -#define SA8775P_SLAVE_ANOC_PCIE_GEM_NOC 609 -#define SA8775P_SLAVE_SNOC_CFG 610 -#define SA8775P_SLAVE_LPASS_SNOC 611 -#define SA8775P_SLAVE_QUP_CORE_0 612 -#define SA8775P_SLAVE_QUP_CORE_1 613 -#define SA8775P_SLAVE_QUP_CORE_2 614 -#define SA8775P_SLAVE_QUP_CORE_3 615 -#define SA8775P_SLAVE_BOOT_IMEM 616 -#define SA8775P_SLAVE_IMEM 617 -#define SA8775P_SLAVE_PIMEM 618 -#define SA8775P_SLAVE_SERVICE_NSP_NOC 619 -#define SA8775P_SLAVE_SERVICE_NSPB_NOC 620 -#define SA8775P_SLAVE_SERVICE_GEM_NOC_1 621 -#define SA8775P_SLAVE_SERVICE_MNOC_HF 622 -#define SA8775P_SLAVE_SERVICE_MNOC_SF 623 -#define SA8775P_SLAVE_SERVICES_LPASS_AML_NOC 624 -#define SA8775P_SLAVE_SERVICE_LPASS_AG_NOC 625 -#define SA8775P_SLAVE_SERVICE_GEM_NOC_2 626 -#define SA8775P_SLAVE_SERVICE_SNOC 627 -#define SA8775P_SLAVE_SERVICE_GEM_NOC 628 -#define SA8775P_SLAVE_SERVICE_GEM_NOC2 629 -#define SA8775P_SLAVE_PCIE_0 630 -#define SA8775P_SLAVE_PCIE_1 631 -#define SA8775P_SLAVE_QDSS_STM 632 -#define SA8775P_SLAVE_TCU 633 +static struct qcom_icc_node qxm_qup3; +static struct qcom_icc_node xm_emac_0; +static struct qcom_icc_node xm_emac_1; +static struct qcom_icc_node xm_sdc1; +static struct qcom_icc_node xm_ufs_mem; +static struct qcom_icc_node xm_usb2_2; +static struct qcom_icc_node xm_usb3_0; +static struct qcom_icc_node xm_usb3_1; +static struct qcom_icc_node qns_a1noc_snoc; +static struct qcom_icc_node qhm_qdss_bam; +static struct qcom_icc_node qhm_qup0; +static struct qcom_icc_node qhm_qup1; +static struct qcom_icc_node qhm_qup2; +static struct qcom_icc_node qnm_cnoc_datapath; +static struct qcom_icc_node qxm_crypto_0; +static struct qcom_icc_node qxm_crypto_1; +static struct qcom_icc_node qxm_ipa; +static struct qcom_icc_node xm_qdss_etr_0; +static struct qcom_icc_node xm_qdss_etr_1; +static struct qcom_icc_node xm_ufs_card; +static struct qcom_icc_node qns_a2noc_snoc; +static struct qcom_icc_node qup0_core_master; +static struct qcom_icc_node qup1_core_master; +static struct qcom_icc_node qup2_core_master; +static struct qcom_icc_node qup3_core_master; +static struct qcom_icc_node qup0_core_slave; +static struct qcom_icc_node qup1_core_slave; +static struct qcom_icc_node qup2_core_slave; +static struct qcom_icc_node qup3_core_slave; +static struct qcom_icc_node qnm_gemnoc_cnoc; +static struct qcom_icc_node qnm_gemnoc_pcie; +static struct qcom_icc_node qhs_ahb2phy0; +static struct qcom_icc_node qhs_ahb2phy1; +static struct qcom_icc_node qhs_ahb2phy2; +static struct qcom_icc_node qhs_ahb2phy3; +static struct qcom_icc_node qhs_anoc_throttle_cfg; +static struct qcom_icc_node qhs_aoss; +static struct qcom_icc_node qhs_apss; +static struct qcom_icc_node qhs_boot_rom; +static struct qcom_icc_node qhs_camera_cfg; +static struct qcom_icc_node qhs_camera_nrt_throttle_cfg; +static struct qcom_icc_node qhs_camera_rt_throttle_cfg; +static struct qcom_icc_node qhs_clk_ctl; +static struct qcom_icc_node qhs_compute0_cfg; +static struct qcom_icc_node qhs_compute1_cfg; +static struct qcom_icc_node qhs_cpr_cx; +static struct qcom_icc_node qhs_cpr_mmcx; +static struct qcom_icc_node qhs_cpr_mx; +static struct qcom_icc_node qhs_cpr_nspcx; +static struct qcom_icc_node qhs_crypto0_cfg; +static struct qcom_icc_node qhs_cx_rdpm; +static struct qcom_icc_node qhs_display0_cfg; +static struct qcom_icc_node qhs_display0_rt_throttle_cfg; +static struct qcom_icc_node qhs_display1_cfg; +static struct qcom_icc_node qhs_display1_rt_throttle_cfg; +static struct qcom_icc_node qhs_emac0_cfg; +static struct qcom_icc_node qhs_emac1_cfg; +static struct qcom_icc_node qhs_gp_dsp0_cfg; +static struct qcom_icc_node qhs_gp_dsp1_cfg; +static struct qcom_icc_node qhs_gpdsp0_throttle_cfg; +static struct qcom_icc_node qhs_gpdsp1_throttle_cfg; +static struct qcom_icc_node qhs_gpu_tcu_throttle_cfg; +static struct qcom_icc_node qhs_gpuss_cfg; +static struct qcom_icc_node qhs_hwkm; +static struct qcom_icc_node qhs_imem_cfg; +static struct qcom_icc_node qhs_ipa; +static struct qcom_icc_node qhs_ipc_router; +static struct qcom_icc_node qhs_lpass_cfg; +static struct qcom_icc_node qhs_lpass_throttle_cfg; +static struct qcom_icc_node qhs_mx_rdpm; +static struct qcom_icc_node qhs_mxc_rdpm; +static struct qcom_icc_node qhs_pcie0_cfg; +static struct qcom_icc_node qhs_pcie1_cfg; +static struct qcom_icc_node qhs_pcie_rsc_cfg; +static struct qcom_icc_node qhs_pcie_tcu_throttle_cfg; +static struct qcom_icc_node qhs_pcie_throttle_cfg; +static struct qcom_icc_node qhs_pdm; +static struct qcom_icc_node qhs_pimem_cfg; +static struct qcom_icc_node qhs_pke_wrapper_cfg; +static struct qcom_icc_node qhs_qdss_cfg; +static struct qcom_icc_node qhs_qm_cfg; +static struct qcom_icc_node qhs_qm_mpu_cfg; +static struct qcom_icc_node qhs_qup0; +static struct qcom_icc_node qhs_qup1; +static struct qcom_icc_node qhs_qup2; +static struct qcom_icc_node qhs_qup3; +static struct qcom_icc_node qhs_sail_throttle_cfg; +static struct qcom_icc_node qhs_sdc1; +static struct qcom_icc_node qhs_security; +static struct qcom_icc_node qhs_snoc_throttle_cfg; +static struct qcom_icc_node qhs_tcsr; +static struct qcom_icc_node qhs_tlmm; +static struct qcom_icc_node qhs_tsc_cfg; +static struct qcom_icc_node qhs_ufs_card_cfg; +static struct qcom_icc_node qhs_ufs_mem_cfg; +static struct qcom_icc_node qhs_usb2_0; +static struct qcom_icc_node qhs_usb3_0; +static struct qcom_icc_node qhs_usb3_1; +static struct qcom_icc_node qhs_venus_cfg; +static struct qcom_icc_node qhs_venus_cvp_throttle_cfg; +static struct qcom_icc_node qhs_venus_v_cpu_throttle_cfg; +static struct qcom_icc_node qhs_venus_vcodec_throttle_cfg; +static struct qcom_icc_node qns_ddrss_cfg; +static struct qcom_icc_node qns_gpdsp_noc_cfg; +static struct qcom_icc_node qns_mnoc_hf_cfg; +static struct qcom_icc_node qns_mnoc_sf_cfg; +static struct qcom_icc_node qns_pcie_anoc_cfg; +static struct qcom_icc_node qns_snoc_cfg; +static struct qcom_icc_node qxs_boot_imem; +static struct qcom_icc_node qxs_imem; +static struct qcom_icc_node qxs_pimem; +static struct qcom_icc_node xs_pcie_0; +static struct qcom_icc_node xs_pcie_1; +static struct qcom_icc_node xs_qdss_stm; +static struct qcom_icc_node xs_sys_tcu_cfg; +static struct qcom_icc_node qnm_cnoc_dc_noc; +static struct qcom_icc_node qhs_llcc; +static struct qcom_icc_node qns_gemnoc; +static struct qcom_icc_node alm_gpu_tcu; +static struct qcom_icc_node alm_pcie_tcu; +static struct qcom_icc_node alm_sys_tcu; +static struct qcom_icc_node chm_apps; +static struct qcom_icc_node qnm_cmpnoc0; +static struct qcom_icc_node qnm_cmpnoc1; +static struct qcom_icc_node qnm_gemnoc_cfg; +static struct qcom_icc_node qnm_gpdsp_sail; +static struct qcom_icc_node qnm_gpu; +static struct qcom_icc_node qnm_mnoc_hf; +static struct qcom_icc_node qnm_mnoc_sf; +static struct qcom_icc_node qnm_pcie; +static struct qcom_icc_node qnm_snoc_gc; +static struct qcom_icc_node qnm_snoc_sf; +static struct qcom_icc_node qns_gem_noc_cnoc; +static struct qcom_icc_node qns_llcc; +static struct qcom_icc_node qns_pcie; +static struct qcom_icc_node srvc_even_gemnoc; +static struct qcom_icc_node srvc_odd_gemnoc; +static struct qcom_icc_node srvc_sys_gemnoc; +static struct qcom_icc_node srvc_sys_gemnoc_2; +static struct qcom_icc_node qxm_dsp0; +static struct qcom_icc_node qxm_dsp1; +static struct qcom_icc_node qns_gp_dsp_sail_noc; +static struct qcom_icc_node qhm_config_noc; +static struct qcom_icc_node qxm_lpass_dsp; +static struct qcom_icc_node qhs_lpass_core; +static struct qcom_icc_node qhs_lpass_lpi; +static struct qcom_icc_node qhs_lpass_mpu; +static struct qcom_icc_node qhs_lpass_top; +static struct qcom_icc_node qns_sysnoc; +static struct qcom_icc_node srvc_niu_aml_noc; +static struct qcom_icc_node srvc_niu_lpass_agnoc; +static struct qcom_icc_node llcc_mc; +static struct qcom_icc_node ebi; +static struct qcom_icc_node qnm_camnoc_hf; +static struct qcom_icc_node qnm_camnoc_icp; +static struct qcom_icc_node qnm_camnoc_sf; +static struct qcom_icc_node qnm_mdp0_0; +static struct qcom_icc_node qnm_mdp0_1; +static struct qcom_icc_node qnm_mdp1_0; +static struct qcom_icc_node qnm_mdp1_1; +static struct qcom_icc_node qnm_mnoc_hf_cfg; +static struct qcom_icc_node qnm_mnoc_sf_cfg; +static struct qcom_icc_node qnm_video0; +static struct qcom_icc_node qnm_video1; +static struct qcom_icc_node qnm_video_cvp; +static struct qcom_icc_node qnm_video_v_cpu; +static struct qcom_icc_node qns_mem_noc_hf; +static struct qcom_icc_node qns_mem_noc_sf; +static struct qcom_icc_node srvc_mnoc_hf; +static struct qcom_icc_node srvc_mnoc_sf; +static struct qcom_icc_node qhm_nsp_noc_config; +static struct qcom_icc_node qxm_nsp; +static struct qcom_icc_node qns_hcp; +static struct qcom_icc_node qns_nsp_gemnoc; +static struct qcom_icc_node service_nsp_noc; +static struct qcom_icc_node qhm_nspb_noc_config; +static struct qcom_icc_node qxm_nspb; +static struct qcom_icc_node qns_nspb_gemnoc; +static struct qcom_icc_node qns_nspb_hcp; +static struct qcom_icc_node service_nspb_noc; +static struct qcom_icc_node xm_pcie3_0; +static struct qcom_icc_node xm_pcie3_1; +static struct qcom_icc_node qns_pcie_mem_noc; +static struct qcom_icc_node qhm_gic; +static struct qcom_icc_node qnm_aggre1_noc; +static struct qcom_icc_node qnm_aggre2_noc; +static struct qcom_icc_node qnm_lpass_noc; +static struct qcom_icc_node qnm_snoc_cfg; +static struct qcom_icc_node qxm_pimem; +static struct qcom_icc_node xm_gic; +static struct qcom_icc_node qns_gemnoc_gc; +static struct qcom_icc_node qns_gemnoc_sf; +static struct qcom_icc_node srvc_snoc; static struct qcom_icc_node qxm_qup3 = { .name = "qxm_qup3", - .id = SA8775P_MASTER_QUP_3, .channels = 1, .buswidth = 8, .num_links = 1, - .links = { SA8775P_SLAVE_A1NOC_SNOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_a1noc_snoc }, }; static struct qcom_icc_node xm_emac_0 = { .name = "xm_emac_0", - .id = SA8775P_MASTER_EMAC, .channels = 1, .buswidth = 8, .num_links = 1, - .links = { SA8775P_SLAVE_A1NOC_SNOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_a1noc_snoc }, }; static struct qcom_icc_node xm_emac_1 = { .name = "xm_emac_1", - .id = SA8775P_MASTER_EMAC_1, .channels = 1, .buswidth = 8, .num_links = 1, - .links = { SA8775P_SLAVE_A1NOC_SNOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_a1noc_snoc }, }; static struct qcom_icc_node xm_sdc1 = { .name = "xm_sdc1", - .id = SA8775P_MASTER_SDC, .channels = 1, .buswidth = 8, .num_links = 1, - .links = { SA8775P_SLAVE_A1NOC_SNOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_a1noc_snoc }, }; static struct qcom_icc_node xm_ufs_mem = { .name = "xm_ufs_mem", - .id = SA8775P_MASTER_UFS_MEM, .channels = 1, .buswidth = 8, .num_links = 1, - .links = { SA8775P_SLAVE_A1NOC_SNOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_a1noc_snoc }, }; static struct qcom_icc_node xm_usb2_2 = { .name = "xm_usb2_2", - .id = SA8775P_MASTER_USB2, .channels = 1, .buswidth = 8, .num_links = 1, - .links = { SA8775P_SLAVE_A1NOC_SNOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_a1noc_snoc }, }; static struct qcom_icc_node xm_usb3_0 = { .name = "xm_usb3_0", - .id = SA8775P_MASTER_USB3_0, .channels = 1, .buswidth = 8, .num_links = 1, - .links = { SA8775P_SLAVE_A1NOC_SNOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_a1noc_snoc }, }; static struct qcom_icc_node xm_usb3_1 = { .name = "xm_usb3_1", - .id = SA8775P_MASTER_USB3_1, .channels = 1, .buswidth = 8, .num_links = 1, - .links = { SA8775P_SLAVE_A1NOC_SNOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_a1noc_snoc }, }; static struct qcom_icc_node qhm_qdss_bam = { .name = "qhm_qdss_bam", - .id = SA8775P_MASTER_QDSS_BAM, .channels = 1, .buswidth = 4, .num_links = 1, - .links = { SA8775P_SLAVE_A2NOC_SNOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_a2noc_snoc }, }; static struct qcom_icc_node qhm_qup0 = { .name = "qhm_qup0", - .id = SA8775P_MASTER_QUP_0, .channels = 1, .buswidth = 4, .num_links = 1, - .links = { SA8775P_SLAVE_A2NOC_SNOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_a2noc_snoc }, }; static struct qcom_icc_node qhm_qup1 = { .name = "qhm_qup1", - .id = SA8775P_MASTER_QUP_1, .channels = 1, .buswidth = 4, .num_links = 1, - .links = { SA8775P_SLAVE_A2NOC_SNOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_a2noc_snoc }, }; static struct qcom_icc_node qhm_qup2 = { .name = "qhm_qup2", - .id = SA8775P_MASTER_QUP_2, .channels = 1, .buswidth = 4, .num_links = 1, - .links = { SA8775P_SLAVE_A2NOC_SNOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_a2noc_snoc }, }; static struct qcom_icc_node qnm_cnoc_datapath = { .name = "qnm_cnoc_datapath", - .id = SA8775P_MASTER_CNOC_A2NOC, .channels = 1, .buswidth = 8, .num_links = 1, - .links = { SA8775P_SLAVE_A2NOC_SNOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_a2noc_snoc }, }; static struct qcom_icc_node qxm_crypto_0 = { .name = "qxm_crypto_0", - .id = SA8775P_MASTER_CRYPTO_CORE0, .channels = 1, .buswidth = 8, .num_links = 1, - .links = { SA8775P_SLAVE_A2NOC_SNOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_a2noc_snoc }, }; static struct qcom_icc_node qxm_crypto_1 = { .name = "qxm_crypto_1", - .id = SA8775P_MASTER_CRYPTO_CORE1, .channels = 1, .buswidth = 8, .num_links = 1, - .links = { SA8775P_SLAVE_A2NOC_SNOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_a2noc_snoc }, }; static struct qcom_icc_node qxm_ipa = { .name = "qxm_ipa", - .id = SA8775P_MASTER_IPA, .channels = 1, .buswidth = 8, .num_links = 1, - .links = { SA8775P_SLAVE_A2NOC_SNOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_a2noc_snoc }, }; static struct qcom_icc_node xm_qdss_etr_0 = { .name = "xm_qdss_etr_0", - .id = SA8775P_MASTER_QDSS_ETR_0, .channels = 1, .buswidth = 8, .num_links = 1, - .links = { SA8775P_SLAVE_A2NOC_SNOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_a2noc_snoc }, }; static struct qcom_icc_node xm_qdss_etr_1 = { .name = "xm_qdss_etr_1", - .id = SA8775P_MASTER_QDSS_ETR_1, .channels = 1, .buswidth = 8, .num_links = 1, - .links = { SA8775P_SLAVE_A2NOC_SNOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_a2noc_snoc }, }; static struct qcom_icc_node xm_ufs_card = { .name = "xm_ufs_card", - .id = SA8775P_MASTER_UFS_CARD, .channels = 1, .buswidth = 8, .num_links = 1, - .links = { SA8775P_SLAVE_A2NOC_SNOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_a2noc_snoc }, }; static struct qcom_icc_node qup0_core_master = { .name = "qup0_core_master", - .id = SA8775P_MASTER_QUP_CORE_0, .channels = 1, .buswidth = 4, .num_links = 1, - .links = { SA8775P_SLAVE_QUP_CORE_0 }, + .link_nodes = (struct qcom_icc_node *[]) { &qup0_core_slave }, }; static struct qcom_icc_node qup1_core_master = { .name = "qup1_core_master", - .id = SA8775P_MASTER_QUP_CORE_1, .channels = 1, .buswidth = 4, .num_links = 1, - .links = { SA8775P_SLAVE_QUP_CORE_1 }, + .link_nodes = (struct qcom_icc_node *[]) { &qup1_core_slave }, }; static struct qcom_icc_node qup2_core_master = { .name = "qup2_core_master", - .id = SA8775P_MASTER_QUP_CORE_2, .channels = 1, .buswidth = 4, .num_links = 1, - .links = { SA8775P_SLAVE_QUP_CORE_2 }, + .link_nodes = (struct qcom_icc_node *[]) { &qup2_core_slave }, }; static struct qcom_icc_node qup3_core_master = { .name = "qup3_core_master", - .id = SA8775P_MASTER_QUP_CORE_3, .channels = 1, .buswidth = 4, .num_links = 1, - .links = { SA8775P_SLAVE_QUP_CORE_3 }, + .link_nodes = (struct qcom_icc_node *[]) { &qup3_core_slave }, }; static struct qcom_icc_node qnm_gemnoc_cnoc = { .name = "qnm_gemnoc_cnoc", - .id = SA8775P_MASTER_GEM_NOC_CNOC, .channels = 1, .buswidth = 16, .num_links = 82, - .links = { SA8775P_SLAVE_AHB2PHY_0, - SA8775P_SLAVE_AHB2PHY_1, - SA8775P_SLAVE_AHB2PHY_2, - SA8775P_SLAVE_AHB2PHY_3, - SA8775P_SLAVE_ANOC_THROTTLE_CFG, - SA8775P_SLAVE_AOSS, - SA8775P_SLAVE_APPSS, - SA8775P_SLAVE_BOOT_ROM, - SA8775P_SLAVE_CAMERA_CFG, - SA8775P_SLAVE_CAMERA_NRT_THROTTLE_CFG, - SA8775P_SLAVE_CAMERA_RT_THROTTLE_CFG, - SA8775P_SLAVE_CLK_CTL, - SA8775P_SLAVE_CDSP_CFG, - SA8775P_SLAVE_CDSP1_CFG, - SA8775P_SLAVE_RBCPR_CX_CFG, - SA8775P_SLAVE_RBCPR_MMCX_CFG, - SA8775P_SLAVE_RBCPR_MX_CFG, - SA8775P_SLAVE_CPR_NSPCX, - SA8775P_SLAVE_CRYPTO_0_CFG, - SA8775P_SLAVE_CX_RDPM, - SA8775P_SLAVE_DISPLAY_CFG, - SA8775P_SLAVE_DISPLAY_RT_THROTTLE_CFG, - SA8775P_SLAVE_DISPLAY1_CFG, - SA8775P_SLAVE_DISPLAY1_RT_THROTTLE_CFG, - SA8775P_SLAVE_EMAC_CFG, - SA8775P_SLAVE_EMAC1_CFG, - SA8775P_SLAVE_GP_DSP0_CFG, - SA8775P_SLAVE_GP_DSP1_CFG, - SA8775P_SLAVE_GPDSP0_THROTTLE_CFG, - SA8775P_SLAVE_GPDSP1_THROTTLE_CFG, - SA8775P_SLAVE_GPU_TCU_THROTTLE_CFG, - SA8775P_SLAVE_GFX3D_CFG, - SA8775P_SLAVE_HWKM, - SA8775P_SLAVE_IMEM_CFG, - SA8775P_SLAVE_IPA_CFG, - SA8775P_SLAVE_IPC_ROUTER_CFG, - SA8775P_SLAVE_LPASS, - SA8775P_SLAVE_LPASS_THROTTLE_CFG, - SA8775P_SLAVE_MX_RDPM, - SA8775P_SLAVE_MXC_RDPM, - SA8775P_SLAVE_PCIE_0_CFG, - SA8775P_SLAVE_PCIE_1_CFG, - SA8775P_SLAVE_PCIE_RSC_CFG, - SA8775P_SLAVE_PCIE_TCU_THROTTLE_CFG, - SA8775P_SLAVE_PCIE_THROTTLE_CFG, - SA8775P_SLAVE_PDM, - SA8775P_SLAVE_PIMEM_CFG, - SA8775P_SLAVE_PKA_WRAPPER_CFG, - SA8775P_SLAVE_QDSS_CFG, - SA8775P_SLAVE_QM_CFG, - SA8775P_SLAVE_QM_MPU_CFG, - SA8775P_SLAVE_QUP_0, - SA8775P_SLAVE_QUP_1, - SA8775P_SLAVE_QUP_2, - SA8775P_SLAVE_QUP_3, - SA8775P_SLAVE_SAIL_THROTTLE_CFG, - SA8775P_SLAVE_SDC1, - SA8775P_SLAVE_SECURITY, - SA8775P_SLAVE_SNOC_THROTTLE_CFG, - SA8775P_SLAVE_TCSR, - SA8775P_SLAVE_TLMM, - SA8775P_SLAVE_TSC_CFG, - SA8775P_SLAVE_UFS_CARD_CFG, - SA8775P_SLAVE_UFS_MEM_CFG, - SA8775P_SLAVE_USB2, - SA8775P_SLAVE_USB3_0, - SA8775P_SLAVE_USB3_1, - SA8775P_SLAVE_VENUS_CFG, - SA8775P_SLAVE_VENUS_CVP_THROTTLE_CFG, - SA8775P_SLAVE_VENUS_V_CPU_THROTTLE_CFG, - SA8775P_SLAVE_VENUS_VCODEC_THROTTLE_CFG, - SA8775P_SLAVE_DDRSS_CFG, - SA8775P_SLAVE_GPDSP_NOC_CFG, - SA8775P_SLAVE_CNOC_MNOC_HF_CFG, - SA8775P_SLAVE_CNOC_MNOC_SF_CFG, - SA8775P_SLAVE_PCIE_ANOC_CFG, - SA8775P_SLAVE_SNOC_CFG, - SA8775P_SLAVE_BOOT_IMEM, - SA8775P_SLAVE_IMEM, - SA8775P_SLAVE_PIMEM, - SA8775P_SLAVE_QDSS_STM, - SA8775P_SLAVE_TCU - }, + .link_nodes = (struct qcom_icc_node *[]) { &qhs_ahb2phy0, &qhs_ahb2phy1, + &qhs_ahb2phy2, &qhs_ahb2phy3, + &qhs_anoc_throttle_cfg, &qhs_aoss, + &qhs_apss, &qhs_boot_rom, + &qhs_camera_cfg, &qhs_camera_nrt_throttle_cfg, + &qhs_camera_rt_throttle_cfg, &qhs_clk_ctl, + &qhs_compute0_cfg, &qhs_compute1_cfg, + &qhs_cpr_cx, &qhs_cpr_mmcx, + &qhs_cpr_mx, &qhs_cpr_nspcx, + &qhs_crypto0_cfg, &qhs_cx_rdpm, + &qhs_display0_cfg, &qhs_display0_rt_throttle_cfg, + &qhs_display1_cfg, &qhs_display1_rt_throttle_cfg, + &qhs_emac0_cfg, &qhs_emac1_cfg, + &qhs_gp_dsp0_cfg, &qhs_gp_dsp1_cfg, + &qhs_gpdsp0_throttle_cfg, &qhs_gpdsp1_throttle_cfg, + &qhs_gpu_tcu_throttle_cfg, &qhs_gpuss_cfg, + &qhs_hwkm, &qhs_imem_cfg, + &qhs_ipa, &qhs_ipc_router, + &qhs_lpass_cfg, &qhs_lpass_throttle_cfg, + &qhs_mx_rdpm, &qhs_mxc_rdpm, + &qhs_pcie0_cfg, &qhs_pcie1_cfg, + &qhs_pcie_rsc_cfg, &qhs_pcie_tcu_throttle_cfg, + &qhs_pcie_throttle_cfg, &qhs_pdm, + &qhs_pimem_cfg, &qhs_pke_wrapper_cfg, + &qhs_qdss_cfg, &qhs_qm_cfg, + &qhs_qm_mpu_cfg, &qhs_qup0, + &qhs_qup1, &qhs_qup2, + &qhs_qup3, &qhs_sail_throttle_cfg, + &qhs_sdc1, &qhs_security, + &qhs_snoc_throttle_cfg, &qhs_tcsr, + &qhs_tlmm, &qhs_tsc_cfg, + &qhs_ufs_card_cfg, &qhs_ufs_mem_cfg, + &qhs_usb2_0, &qhs_usb3_0, + &qhs_usb3_1, &qhs_venus_cfg, + &qhs_venus_cvp_throttle_cfg, &qhs_venus_v_cpu_throttle_cfg, + &qhs_venus_vcodec_throttle_cfg, &qns_ddrss_cfg, + &qns_gpdsp_noc_cfg, &qns_mnoc_hf_cfg, + &qns_mnoc_sf_cfg, &qns_pcie_anoc_cfg, + &qns_snoc_cfg, &qxs_boot_imem, + &qxs_imem, &qxs_pimem, + &xs_qdss_stm, &xs_sys_tcu_cfg }, }; static struct qcom_icc_node qnm_gemnoc_pcie = { .name = "qnm_gemnoc_pcie", - .id = SA8775P_MASTER_GEM_NOC_PCIE_SNOC, .channels = 1, .buswidth = 16, .num_links = 2, - .links = { SA8775P_SLAVE_PCIE_0, - SA8775P_SLAVE_PCIE_1 - }, + .link_nodes = (struct qcom_icc_node *[]) { &xs_pcie_0, &xs_pcie_1 }, }; static struct qcom_icc_node qnm_cnoc_dc_noc = { .name = "qnm_cnoc_dc_noc", - .id = SA8775P_MASTER_CNOC_DC_NOC, .channels = 1, .buswidth = 4, .num_links = 2, - .links = { SA8775P_SLAVE_LLCC_CFG, - SA8775P_SLAVE_GEM_NOC_CFG - }, + .link_nodes = (struct qcom_icc_node *[]) { &qhs_llcc, &qns_gemnoc }, }; static struct qcom_icc_node alm_gpu_tcu = { .name = "alm_gpu_tcu", - .id = SA8775P_MASTER_GPU_TCU, .channels = 1, .buswidth = 8, .num_links = 2, - .links = { SA8775P_SLAVE_GEM_NOC_CNOC, - SA8775P_SLAVE_LLCC - }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_gem_noc_cnoc, &qns_llcc }, }; static struct qcom_icc_node alm_pcie_tcu = { .name = "alm_pcie_tcu", - .id = SA8775P_MASTER_PCIE_TCU, .channels = 1, .buswidth = 8, .num_links = 2, - .links = { SA8775P_SLAVE_GEM_NOC_CNOC, - SA8775P_SLAVE_LLCC - }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_gem_noc_cnoc, &qns_llcc }, }; static struct qcom_icc_node alm_sys_tcu = { .name = "alm_sys_tcu", - .id = SA8775P_MASTER_SYS_TCU, .channels = 1, .buswidth = 8, .num_links = 2, - .links = { SA8775P_SLAVE_GEM_NOC_CNOC, - SA8775P_SLAVE_LLCC - }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_gem_noc_cnoc, &qns_llcc }, }; static struct qcom_icc_node chm_apps = { .name = "chm_apps", - .id = SA8775P_MASTER_APPSS_PROC, .channels = 4, .buswidth = 32, .num_links = 3, - .links = { SA8775P_SLAVE_GEM_NOC_CNOC, - SA8775P_SLAVE_LLCC, - SA8775P_SLAVE_GEM_NOC_PCIE_CNOC - }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_gem_noc_cnoc, &qns_llcc, + &qns_pcie }, }; static struct qcom_icc_node qnm_cmpnoc0 = { .name = "qnm_cmpnoc0", - .id = SA8775P_MASTER_COMPUTE_NOC, .channels = 2, .buswidth = 32, .num_links = 2, - .links = { SA8775P_SLAVE_GEM_NOC_CNOC, - SA8775P_SLAVE_LLCC - }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_gem_noc_cnoc, &qns_llcc }, }; static struct qcom_icc_node qnm_cmpnoc1 = { .name = "qnm_cmpnoc1", - .id = SA8775P_MASTER_COMPUTE_NOC_1, .channels = 2, .buswidth = 32, .num_links = 2, - .links = { SA8775P_SLAVE_GEM_NOC_CNOC, - SA8775P_SLAVE_LLCC - }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_gem_noc_cnoc, &qns_llcc }, }; static struct qcom_icc_node qnm_gemnoc_cfg = { .name = "qnm_gemnoc_cfg", - .id = SA8775P_MASTER_GEM_NOC_CFG, .channels = 1, .buswidth = 4, .num_links = 4, - .links = { SA8775P_SLAVE_SERVICE_GEM_NOC_1, - SA8775P_SLAVE_SERVICE_GEM_NOC_2, - SA8775P_SLAVE_SERVICE_GEM_NOC, - SA8775P_SLAVE_SERVICE_GEM_NOC2 - }, + .link_nodes = (struct qcom_icc_node *[]) { &srvc_even_gemnoc, &srvc_odd_gemnoc, + &srvc_sys_gemnoc, &srvc_sys_gemnoc_2 }, }; static struct qcom_icc_node qnm_gpdsp_sail = { .name = "qnm_gpdsp_sail", - .id = SA8775P_MASTER_GPDSP_SAIL, .channels = 1, .buswidth = 16, .num_links = 2, - .links = { SA8775P_SLAVE_GEM_NOC_CNOC, - SA8775P_SLAVE_LLCC - }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_gem_noc_cnoc, &qns_llcc }, }; static struct qcom_icc_node qnm_gpu = { .name = "qnm_gpu", - .id = SA8775P_MASTER_GFX3D, .channels = 2, .buswidth = 32, .num_links = 2, - .links = { SA8775P_SLAVE_GEM_NOC_CNOC, - SA8775P_SLAVE_LLCC - }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_gem_noc_cnoc, &qns_llcc }, }; static struct qcom_icc_node qnm_mnoc_hf = { .name = "qnm_mnoc_hf", - .id = SA8775P_MASTER_MNOC_HF_MEM_NOC, .channels = 2, .buswidth = 32, .num_links = 2, - .links = { SA8775P_SLAVE_LLCC, - SA8775P_SLAVE_GEM_NOC_PCIE_CNOC - }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_llcc, &qns_pcie }, }; static struct qcom_icc_node qnm_mnoc_sf = { .name = "qnm_mnoc_sf", - .id = SA8775P_MASTER_MNOC_SF_MEM_NOC, .channels = 2, .buswidth = 32, .num_links = 3, - .links = { SA8775P_SLAVE_GEM_NOC_CNOC, - SA8775P_SLAVE_LLCC, - SA8775P_SLAVE_GEM_NOC_PCIE_CNOC - }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_gem_noc_cnoc, &qns_llcc, + &qns_pcie }, }; static struct qcom_icc_node qnm_pcie = { .name = "qnm_pcie", - .id = SA8775P_MASTER_ANOC_PCIE_GEM_NOC, .channels = 1, .buswidth = 32, .num_links = 2, - .links = { SA8775P_SLAVE_GEM_NOC_CNOC, - SA8775P_SLAVE_LLCC - }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_gem_noc_cnoc, &qns_llcc }, }; static struct qcom_icc_node qnm_snoc_gc = { .name = "qnm_snoc_gc", - .id = SA8775P_MASTER_SNOC_GC_MEM_NOC, .channels = 1, .buswidth = 8, .num_links = 1, - .links = { SA8775P_SLAVE_LLCC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_llcc }, }; static struct qcom_icc_node qnm_snoc_sf = { .name = "qnm_snoc_sf", - .id = SA8775P_MASTER_SNOC_SF_MEM_NOC, .channels = 1, .buswidth = 16, .num_links = 3, - .links = { SA8775P_SLAVE_GEM_NOC_CNOC, - SA8775P_SLAVE_LLCC, - SA8775P_SLAVE_GEM_NOC_PCIE_CNOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_gem_noc_cnoc, &qns_llcc, + &qns_pcie }, }; static struct qcom_icc_node qxm_dsp0 = { .name = "qxm_dsp0", - .id = SA8775P_MASTER_DSP0, .channels = 1, .buswidth = 16, .num_links = 1, - .links = { SA8775P_SLAVE_GP_DSP_SAIL_NOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_gp_dsp_sail_noc }, }; static struct qcom_icc_node qxm_dsp1 = { .name = "qxm_dsp1", - .id = SA8775P_MASTER_DSP1, .channels = 1, .buswidth = 16, .num_links = 1, - .links = { SA8775P_SLAVE_GP_DSP_SAIL_NOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_gp_dsp_sail_noc }, }; static struct qcom_icc_node qhm_config_noc = { .name = "qhm_config_noc", - .id = SA8775P_MASTER_CNOC_LPASS_AG_NOC, .channels = 1, .buswidth = 4, .num_links = 6, - .links = { SA8775P_SLAVE_LPASS_CORE_CFG, - SA8775P_SLAVE_LPASS_LPI_CFG, - SA8775P_SLAVE_LPASS_MPU_CFG, - SA8775P_SLAVE_LPASS_TOP_CFG, - SA8775P_SLAVE_SERVICES_LPASS_AML_NOC, - SA8775P_SLAVE_SERVICE_LPASS_AG_NOC - }, + .link_nodes = (struct qcom_icc_node *[]) { &qhs_lpass_core, &qhs_lpass_lpi, + &qhs_lpass_mpu, &qhs_lpass_top, + &srvc_niu_aml_noc, &srvc_niu_lpass_agnoc }, }; static struct qcom_icc_node qxm_lpass_dsp = { .name = "qxm_lpass_dsp", - .id = SA8775P_MASTER_LPASS_PROC, .channels = 1, .buswidth = 8, .num_links = 4, - .links = { SA8775P_SLAVE_LPASS_TOP_CFG, - SA8775P_SLAVE_LPASS_SNOC, - SA8775P_SLAVE_SERVICES_LPASS_AML_NOC, - SA8775P_SLAVE_SERVICE_LPASS_AG_NOC - }, + .link_nodes = (struct qcom_icc_node *[]) { &qhs_lpass_top, &qns_sysnoc, + &srvc_niu_aml_noc, &srvc_niu_lpass_agnoc }, }; static struct qcom_icc_node llcc_mc = { .name = "llcc_mc", - .id = SA8775P_MASTER_LLCC, .channels = 8, .buswidth = 4, .num_links = 1, - .links = { SA8775P_SLAVE_EBI1 }, + .link_nodes = (struct qcom_icc_node *[]) { &ebi }, }; static struct qcom_icc_node qnm_camnoc_hf = { .name = "qnm_camnoc_hf", - .id = SA8775P_MASTER_CAMNOC_HF, .channels = 1, .buswidth = 32, .num_links = 1, - .links = { SA8775P_SLAVE_MNOC_HF_MEM_NOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_mem_noc_hf }, }; static struct qcom_icc_node qnm_camnoc_icp = { .name = "qnm_camnoc_icp", - .id = SA8775P_MASTER_CAMNOC_ICP, .channels = 1, .buswidth = 8, .num_links = 1, - .links = { SA8775P_SLAVE_MNOC_SF_MEM_NOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_mem_noc_sf }, }; static struct qcom_icc_node qnm_camnoc_sf = { .name = "qnm_camnoc_sf", - .id = SA8775P_MASTER_CAMNOC_SF, .channels = 1, .buswidth = 32, .num_links = 1, - .links = { SA8775P_SLAVE_MNOC_SF_MEM_NOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_mem_noc_sf }, }; static struct qcom_icc_node qnm_mdp0_0 = { .name = "qnm_mdp0_0", - .id = SA8775P_MASTER_MDP0, .channels = 1, .buswidth = 32, .num_links = 1, - .links = { SA8775P_SLAVE_MNOC_HF_MEM_NOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_mem_noc_hf }, }; static struct qcom_icc_node qnm_mdp0_1 = { .name = "qnm_mdp0_1", - .id = SA8775P_MASTER_MDP1, .channels = 1, .buswidth = 32, .num_links = 1, - .links = { SA8775P_SLAVE_MNOC_HF_MEM_NOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_mem_noc_hf }, }; static struct qcom_icc_node qnm_mdp1_0 = { .name = "qnm_mdp1_0", - .id = SA8775P_MASTER_MDP_CORE1_0, .channels = 1, .buswidth = 32, .num_links = 1, - .links = { SA8775P_SLAVE_MNOC_HF_MEM_NOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_mem_noc_hf }, }; static struct qcom_icc_node qnm_mdp1_1 = { .name = "qnm_mdp1_1", - .id = SA8775P_MASTER_MDP_CORE1_1, .channels = 1, .buswidth = 32, .num_links = 1, - .links = { SA8775P_SLAVE_MNOC_HF_MEM_NOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_mem_noc_hf }, }; static struct qcom_icc_node qnm_mnoc_hf_cfg = { .name = "qnm_mnoc_hf_cfg", - .id = SA8775P_MASTER_CNOC_MNOC_HF_CFG, .channels = 1, .buswidth = 4, .num_links = 1, - .links = { SA8775P_SLAVE_SERVICE_MNOC_HF }, + .link_nodes = (struct qcom_icc_node *[]) { &srvc_mnoc_hf }, }; static struct qcom_icc_node qnm_mnoc_sf_cfg = { .name = "qnm_mnoc_sf_cfg", - .id = SA8775P_MASTER_CNOC_MNOC_SF_CFG, .channels = 1, .buswidth = 4, .num_links = 1, - .links = { SA8775P_SLAVE_SERVICE_MNOC_SF }, + .link_nodes = (struct qcom_icc_node *[]) { &srvc_mnoc_sf }, }; static struct qcom_icc_node qnm_video0 = { .name = "qnm_video0", - .id = SA8775P_MASTER_VIDEO_P0, .channels = 1, .buswidth = 32, .num_links = 1, - .links = { SA8775P_SLAVE_MNOC_SF_MEM_NOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_mem_noc_sf }, }; static struct qcom_icc_node qnm_video1 = { .name = "qnm_video1", - .id = SA8775P_MASTER_VIDEO_P1, .channels = 1, .buswidth = 32, .num_links = 1, - .links = { SA8775P_SLAVE_MNOC_SF_MEM_NOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_mem_noc_sf }, }; static struct qcom_icc_node qnm_video_cvp = { .name = "qnm_video_cvp", - .id = SA8775P_MASTER_VIDEO_PROC, .channels = 1, .buswidth = 32, .num_links = 1, - .links = { SA8775P_SLAVE_MNOC_SF_MEM_NOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_mem_noc_sf }, }; static struct qcom_icc_node qnm_video_v_cpu = { .name = "qnm_video_v_cpu", - .id = SA8775P_MASTER_VIDEO_V_PROC, .channels = 1, .buswidth = 8, .num_links = 1, - .links = { SA8775P_SLAVE_MNOC_SF_MEM_NOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_mem_noc_sf }, }; static struct qcom_icc_node qhm_nsp_noc_config = { .name = "qhm_nsp_noc_config", - .id = SA8775P_MASTER_CDSP_NOC_CFG, .channels = 1, .buswidth = 4, .num_links = 1, - .links = { SA8775P_SLAVE_SERVICE_NSP_NOC }, + .link_nodes = (struct qcom_icc_node *[]) { &service_nsp_noc }, }; static struct qcom_icc_node qxm_nsp = { .name = "qxm_nsp", - .id = SA8775P_MASTER_CDSP_PROC, .channels = 2, .buswidth = 32, .num_links = 2, - .links = { SA8775P_SLAVE_HCP_A, SLAVE_CDSP_MEM_NOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_hcp, &qns_nsp_gemnoc }, }; static struct qcom_icc_node qhm_nspb_noc_config = { .name = "qhm_nspb_noc_config", - .id = SA8775P_MASTER_CDSPB_NOC_CFG, .channels = 1, .buswidth = 4, .num_links = 1, - .links = { SA8775P_SLAVE_SERVICE_NSPB_NOC }, + .link_nodes = (struct qcom_icc_node *[]) { &service_nspb_noc }, }; static struct qcom_icc_node qxm_nspb = { .name = "qxm_nspb", - .id = SA8775P_MASTER_CDSP_PROC_B, .channels = 2, .buswidth = 32, .num_links = 2, - .links = { SA8775P_SLAVE_HCP_B, SLAVE_CDSPB_MEM_NOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_nspb_hcp, &qns_nspb_gemnoc }, }; static struct qcom_icc_node xm_pcie3_0 = { .name = "xm_pcie3_0", - .id = SA8775P_MASTER_PCIE_0, .channels = 1, .buswidth = 16, .num_links = 1, - .links = { SA8775P_SLAVE_ANOC_PCIE_GEM_NOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_pcie_mem_noc }, }; static struct qcom_icc_node xm_pcie3_1 = { .name = "xm_pcie3_1", - .id = SA8775P_MASTER_PCIE_1, .channels = 1, .buswidth = 32, .num_links = 1, - .links = { SA8775P_SLAVE_ANOC_PCIE_GEM_NOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_pcie_mem_noc }, }; static struct qcom_icc_node qhm_gic = { .name = "qhm_gic", - .id = SA8775P_MASTER_GIC_AHB, .channels = 1, .buswidth = 4, .num_links = 1, - .links = { SA8775P_SLAVE_SNOC_GEM_NOC_SF }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_gemnoc_sf }, }; static struct qcom_icc_node qnm_aggre1_noc = { .name = "qnm_aggre1_noc", - .id = SA8775P_MASTER_A1NOC_SNOC, .channels = 1, .buswidth = 32, .num_links = 1, - .links = { SA8775P_SLAVE_SNOC_GEM_NOC_SF }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_gemnoc_sf }, }; static struct qcom_icc_node qnm_aggre2_noc = { .name = "qnm_aggre2_noc", - .id = SA8775P_MASTER_A2NOC_SNOC, .channels = 1, .buswidth = 16, .num_links = 1, - .links = { SA8775P_SLAVE_SNOC_GEM_NOC_SF }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_gemnoc_sf }, }; static struct qcom_icc_node qnm_lpass_noc = { .name = "qnm_lpass_noc", - .id = SA8775P_MASTER_LPASS_ANOC, .channels = 1, .buswidth = 16, .num_links = 1, - .links = { SA8775P_SLAVE_SNOC_GEM_NOC_SF }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_gemnoc_sf }, }; static struct qcom_icc_node qnm_snoc_cfg = { .name = "qnm_snoc_cfg", - .id = SA8775P_MASTER_SNOC_CFG, .channels = 1, .buswidth = 4, .num_links = 1, - .links = { SA8775P_SLAVE_SERVICE_SNOC }, + .link_nodes = (struct qcom_icc_node *[]) { &srvc_snoc }, }; static struct qcom_icc_node qxm_pimem = { .name = "qxm_pimem", - .id = SA8775P_MASTER_PIMEM, .channels = 1, .buswidth = 8, .num_links = 1, - .links = { SA8775P_SLAVE_SNOC_GEM_NOC_GC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_gemnoc_gc }, }; static struct qcom_icc_node xm_gic = { .name = "xm_gic", - .id = SA8775P_MASTER_GIC, .channels = 1, .buswidth = 8, .num_links = 1, - .links = { SA8775P_SLAVE_SNOC_GEM_NOC_GC }, + .link_nodes = (struct qcom_icc_node *[]) { &qns_gemnoc_gc }, }; static struct qcom_icc_node qns_a1noc_snoc = { .name = "qns_a1noc_snoc", - .id = SA8775P_SLAVE_A1NOC_SNOC, .channels = 1, .buswidth = 32, .num_links = 1, - .links = { SA8775P_MASTER_A1NOC_SNOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qnm_aggre1_noc }, }; static struct qcom_icc_node qns_a2noc_snoc = { .name = "qns_a2noc_snoc", - .id = SA8775P_SLAVE_A2NOC_SNOC, .channels = 1, .buswidth = 16, .num_links = 1, - .links = { SA8775P_MASTER_A2NOC_SNOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qnm_aggre2_noc }, }; static struct qcom_icc_node qup0_core_slave = { .name = "qup0_core_slave", - .id = SA8775P_SLAVE_QUP_CORE_0, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qup1_core_slave = { .name = "qup1_core_slave", - .id = SA8775P_SLAVE_QUP_CORE_1, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qup2_core_slave = { .name = "qup2_core_slave", - .id = SA8775P_SLAVE_QUP_CORE_2, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qup3_core_slave = { .name = "qup3_core_slave", - .id = SA8775P_SLAVE_QUP_CORE_3, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_ahb2phy0 = { .name = "qhs_ahb2phy0", - .id = SA8775P_SLAVE_AHB2PHY_0, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_ahb2phy1 = { .name = "qhs_ahb2phy1", - .id = SA8775P_SLAVE_AHB2PHY_1, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_ahb2phy2 = { .name = "qhs_ahb2phy2", - .id = SA8775P_SLAVE_AHB2PHY_2, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_ahb2phy3 = { .name = "qhs_ahb2phy3", - .id = SA8775P_SLAVE_AHB2PHY_3, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_anoc_throttle_cfg = { .name = "qhs_anoc_throttle_cfg", - .id = SA8775P_SLAVE_ANOC_THROTTLE_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_aoss = { .name = "qhs_aoss", - .id = SA8775P_SLAVE_AOSS, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_apss = { .name = "qhs_apss", - .id = SA8775P_SLAVE_APPSS, .channels = 1, .buswidth = 8, }; static struct qcom_icc_node qhs_boot_rom = { .name = "qhs_boot_rom", - .id = SA8775P_SLAVE_BOOT_ROM, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_camera_cfg = { .name = "qhs_camera_cfg", - .id = SA8775P_SLAVE_CAMERA_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_camera_nrt_throttle_cfg = { .name = "qhs_camera_nrt_throttle_cfg", - .id = SA8775P_SLAVE_CAMERA_NRT_THROTTLE_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_camera_rt_throttle_cfg = { .name = "qhs_camera_rt_throttle_cfg", - .id = SA8775P_SLAVE_CAMERA_RT_THROTTLE_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_clk_ctl = { .name = "qhs_clk_ctl", - .id = SA8775P_SLAVE_CLK_CTL, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_compute0_cfg = { .name = "qhs_compute0_cfg", - .id = SA8775P_SLAVE_CDSP_CFG, .channels = 1, .buswidth = 4, .num_links = 1, - .links = { SA8775P_MASTER_CDSP_NOC_CFG }, + .link_nodes = (struct qcom_icc_node *[]) { &qhm_nsp_noc_config }, }; static struct qcom_icc_node qhs_compute1_cfg = { .name = "qhs_compute1_cfg", - .id = SA8775P_SLAVE_CDSP1_CFG, .channels = 1, .buswidth = 4, .num_links = 1, - .links = { SA8775P_MASTER_CDSPB_NOC_CFG }, + .link_nodes = (struct qcom_icc_node *[]) { &qhm_nspb_noc_config }, }; static struct qcom_icc_node qhs_cpr_cx = { .name = "qhs_cpr_cx", - .id = SA8775P_SLAVE_RBCPR_CX_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_cpr_mmcx = { .name = "qhs_cpr_mmcx", - .id = SA8775P_SLAVE_RBCPR_MMCX_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_cpr_mx = { .name = "qhs_cpr_mx", - .id = SA8775P_SLAVE_RBCPR_MX_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_cpr_nspcx = { .name = "qhs_cpr_nspcx", - .id = SA8775P_SLAVE_CPR_NSPCX, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_crypto0_cfg = { .name = "qhs_crypto0_cfg", - .id = SA8775P_SLAVE_CRYPTO_0_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_cx_rdpm = { .name = "qhs_cx_rdpm", - .id = SA8775P_SLAVE_CX_RDPM, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_display0_cfg = { .name = "qhs_display0_cfg", - .id = SA8775P_SLAVE_DISPLAY_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_display0_rt_throttle_cfg = { .name = "qhs_display0_rt_throttle_cfg", - .id = SA8775P_SLAVE_DISPLAY_RT_THROTTLE_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_display1_cfg = { .name = "qhs_display1_cfg", - .id = SA8775P_SLAVE_DISPLAY1_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_display1_rt_throttle_cfg = { .name = "qhs_display1_rt_throttle_cfg", - .id = SA8775P_SLAVE_DISPLAY1_RT_THROTTLE_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_emac0_cfg = { .name = "qhs_emac0_cfg", - .id = SA8775P_SLAVE_EMAC_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_emac1_cfg = { .name = "qhs_emac1_cfg", - .id = SA8775P_SLAVE_EMAC1_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_gp_dsp0_cfg = { .name = "qhs_gp_dsp0_cfg", - .id = SA8775P_SLAVE_GP_DSP0_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_gp_dsp1_cfg = { .name = "qhs_gp_dsp1_cfg", - .id = SA8775P_SLAVE_GP_DSP1_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_gpdsp0_throttle_cfg = { .name = "qhs_gpdsp0_throttle_cfg", - .id = SA8775P_SLAVE_GPDSP0_THROTTLE_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_gpdsp1_throttle_cfg = { .name = "qhs_gpdsp1_throttle_cfg", - .id = SA8775P_SLAVE_GPDSP1_THROTTLE_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_gpu_tcu_throttle_cfg = { .name = "qhs_gpu_tcu_throttle_cfg", - .id = SA8775P_SLAVE_GPU_TCU_THROTTLE_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_gpuss_cfg = { .name = "qhs_gpuss_cfg", - .id = SA8775P_SLAVE_GFX3D_CFG, .channels = 1, .buswidth = 8, }; static struct qcom_icc_node qhs_hwkm = { .name = "qhs_hwkm", - .id = SA8775P_SLAVE_HWKM, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_imem_cfg = { .name = "qhs_imem_cfg", - .id = SA8775P_SLAVE_IMEM_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_ipa = { .name = "qhs_ipa", - .id = SA8775P_SLAVE_IPA_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_ipc_router = { .name = "qhs_ipc_router", - .id = SA8775P_SLAVE_IPC_ROUTER_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_lpass_cfg = { .name = "qhs_lpass_cfg", - .id = SA8775P_SLAVE_LPASS, .channels = 1, .buswidth = 4, .num_links = 1, - .links = { SA8775P_MASTER_CNOC_LPASS_AG_NOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qhm_config_noc }, }; static struct qcom_icc_node qhs_lpass_throttle_cfg = { .name = "qhs_lpass_throttle_cfg", - .id = SA8775P_SLAVE_LPASS_THROTTLE_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_mx_rdpm = { .name = "qhs_mx_rdpm", - .id = SA8775P_SLAVE_MX_RDPM, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_mxc_rdpm = { .name = "qhs_mxc_rdpm", - .id = SA8775P_SLAVE_MXC_RDPM, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_pcie0_cfg = { .name = "qhs_pcie0_cfg", - .id = SA8775P_SLAVE_PCIE_0_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_pcie1_cfg = { .name = "qhs_pcie1_cfg", - .id = SA8775P_SLAVE_PCIE_1_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_pcie_rsc_cfg = { .name = "qhs_pcie_rsc_cfg", - .id = SA8775P_SLAVE_PCIE_RSC_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_pcie_tcu_throttle_cfg = { .name = "qhs_pcie_tcu_throttle_cfg", - .id = SA8775P_SLAVE_PCIE_TCU_THROTTLE_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_pcie_throttle_cfg = { .name = "qhs_pcie_throttle_cfg", - .id = SA8775P_SLAVE_PCIE_THROTTLE_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_pdm = { .name = "qhs_pdm", - .id = SA8775P_SLAVE_PDM, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_pimem_cfg = { .name = "qhs_pimem_cfg", - .id = SA8775P_SLAVE_PIMEM_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_pke_wrapper_cfg = { .name = "qhs_pke_wrapper_cfg", - .id = SA8775P_SLAVE_PKA_WRAPPER_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_qdss_cfg = { .name = "qhs_qdss_cfg", - .id = SA8775P_SLAVE_QDSS_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_qm_cfg = { .name = "qhs_qm_cfg", - .id = SA8775P_SLAVE_QM_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_qm_mpu_cfg = { .name = "qhs_qm_mpu_cfg", - .id = SA8775P_SLAVE_QM_MPU_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_qup0 = { .name = "qhs_qup0", - .id = SA8775P_SLAVE_QUP_0, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_qup1 = { .name = "qhs_qup1", - .id = SA8775P_SLAVE_QUP_1, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_qup2 = { .name = "qhs_qup2", - .id = SA8775P_SLAVE_QUP_2, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_qup3 = { .name = "qhs_qup3", - .id = SA8775P_SLAVE_QUP_3, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_sail_throttle_cfg = { .name = "qhs_sail_throttle_cfg", - .id = SA8775P_SLAVE_SAIL_THROTTLE_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_sdc1 = { .name = "qhs_sdc1", - .id = SA8775P_SLAVE_SDC1, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_security = { .name = "qhs_security", - .id = SA8775P_SLAVE_SECURITY, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_snoc_throttle_cfg = { .name = "qhs_snoc_throttle_cfg", - .id = SA8775P_SLAVE_SNOC_THROTTLE_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_tcsr = { .name = "qhs_tcsr", - .id = SA8775P_SLAVE_TCSR, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_tlmm = { .name = "qhs_tlmm", - .id = SA8775P_SLAVE_TLMM, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_tsc_cfg = { .name = "qhs_tsc_cfg", - .id = SA8775P_SLAVE_TSC_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_ufs_card_cfg = { .name = "qhs_ufs_card_cfg", - .id = SA8775P_SLAVE_UFS_CARD_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_ufs_mem_cfg = { .name = "qhs_ufs_mem_cfg", - .id = SA8775P_SLAVE_UFS_MEM_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_usb2_0 = { .name = "qhs_usb2_0", - .id = SA8775P_SLAVE_USB2, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_usb3_0 = { .name = "qhs_usb3_0", - .id = SA8775P_SLAVE_USB3_0, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_usb3_1 = { .name = "qhs_usb3_1", - .id = SA8775P_SLAVE_USB3_1, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_venus_cfg = { .name = "qhs_venus_cfg", - .id = SA8775P_SLAVE_VENUS_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_venus_cvp_throttle_cfg = { .name = "qhs_venus_cvp_throttle_cfg", - .id = SA8775P_SLAVE_VENUS_CVP_THROTTLE_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_venus_v_cpu_throttle_cfg = { .name = "qhs_venus_v_cpu_throttle_cfg", - .id = SA8775P_SLAVE_VENUS_V_CPU_THROTTLE_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_venus_vcodec_throttle_cfg = { .name = "qhs_venus_vcodec_throttle_cfg", - .id = SA8775P_SLAVE_VENUS_VCODEC_THROTTLE_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qns_ddrss_cfg = { .name = "qns_ddrss_cfg", - .id = SA8775P_SLAVE_DDRSS_CFG, .channels = 1, .buswidth = 4, .num_links = 1, - .links = { SA8775P_MASTER_CNOC_DC_NOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qnm_cnoc_dc_noc }, }; static struct qcom_icc_node qns_gpdsp_noc_cfg = { .name = "qns_gpdsp_noc_cfg", - .id = SA8775P_SLAVE_GPDSP_NOC_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qns_mnoc_hf_cfg = { .name = "qns_mnoc_hf_cfg", - .id = SA8775P_SLAVE_CNOC_MNOC_HF_CFG, .channels = 1, .buswidth = 4, .num_links = 1, - .links = { SA8775P_MASTER_CNOC_MNOC_HF_CFG }, + .link_nodes = (struct qcom_icc_node *[]) { &qnm_mnoc_hf_cfg }, }; static struct qcom_icc_node qns_mnoc_sf_cfg = { .name = "qns_mnoc_sf_cfg", - .id = SA8775P_SLAVE_CNOC_MNOC_SF_CFG, .channels = 1, .buswidth = 4, .num_links = 1, - .links = { SA8775P_MASTER_CNOC_MNOC_SF_CFG }, + .link_nodes = (struct qcom_icc_node *[]) { &qnm_mnoc_sf_cfg }, }; static struct qcom_icc_node qns_pcie_anoc_cfg = { .name = "qns_pcie_anoc_cfg", - .id = SA8775P_SLAVE_PCIE_ANOC_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qns_snoc_cfg = { .name = "qns_snoc_cfg", - .id = SA8775P_SLAVE_SNOC_CFG, .channels = 1, .buswidth = 4, .num_links = 1, - .links = { SA8775P_MASTER_SNOC_CFG }, + .link_nodes = (struct qcom_icc_node *[]) { &qnm_snoc_cfg }, }; static struct qcom_icc_node qxs_boot_imem = { .name = "qxs_boot_imem", - .id = SA8775P_SLAVE_BOOT_IMEM, .channels = 1, .buswidth = 16, }; static struct qcom_icc_node qxs_imem = { .name = "qxs_imem", - .id = SA8775P_SLAVE_IMEM, .channels = 1, .buswidth = 8, }; static struct qcom_icc_node qxs_pimem = { .name = "qxs_pimem", - .id = SA8775P_SLAVE_PIMEM, .channels = 1, .buswidth = 8, }; static struct qcom_icc_node xs_pcie_0 = { .name = "xs_pcie_0", - .id = SA8775P_SLAVE_PCIE_0, .channels = 1, .buswidth = 16, }; static struct qcom_icc_node xs_pcie_1 = { .name = "xs_pcie_1", - .id = SA8775P_SLAVE_PCIE_1, .channels = 1, .buswidth = 32, }; static struct qcom_icc_node xs_qdss_stm = { .name = "xs_qdss_stm", - .id = SA8775P_SLAVE_QDSS_STM, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node xs_sys_tcu_cfg = { .name = "xs_sys_tcu_cfg", - .id = SA8775P_SLAVE_TCU, .channels = 1, .buswidth = 8, }; static struct qcom_icc_node qhs_llcc = { .name = "qhs_llcc", - .id = SA8775P_SLAVE_LLCC_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qns_gemnoc = { .name = "qns_gemnoc", - .id = SA8775P_SLAVE_GEM_NOC_CFG, .channels = 1, .buswidth = 4, .num_links = 1, - .links = { SA8775P_MASTER_GEM_NOC_CFG }, + .link_nodes = (struct qcom_icc_node *[]) { &qnm_gemnoc_cfg }, }; static struct qcom_icc_node qns_gem_noc_cnoc = { .name = "qns_gem_noc_cnoc", - .id = SA8775P_SLAVE_GEM_NOC_CNOC, .channels = 1, .buswidth = 16, .num_links = 1, - .links = { SA8775P_MASTER_GEM_NOC_CNOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qnm_gemnoc_cnoc }, }; static struct qcom_icc_node qns_llcc = { .name = "qns_llcc", - .id = SA8775P_SLAVE_LLCC, .channels = 6, .buswidth = 16, .num_links = 1, - .links = { SA8775P_MASTER_LLCC }, + .link_nodes = (struct qcom_icc_node *[]) { &llcc_mc }, }; static struct qcom_icc_node qns_pcie = { .name = "qns_pcie", - .id = SA8775P_SLAVE_GEM_NOC_PCIE_CNOC, .channels = 1, .buswidth = 16, .num_links = 1, - .links = { SA8775P_MASTER_GEM_NOC_PCIE_SNOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qnm_gemnoc_pcie }, }; static struct qcom_icc_node srvc_even_gemnoc = { .name = "srvc_even_gemnoc", - .id = SA8775P_SLAVE_SERVICE_GEM_NOC_1, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node srvc_odd_gemnoc = { .name = "srvc_odd_gemnoc", - .id = SA8775P_SLAVE_SERVICE_GEM_NOC_2, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node srvc_sys_gemnoc = { .name = "srvc_sys_gemnoc", - .id = SA8775P_SLAVE_SERVICE_GEM_NOC, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node srvc_sys_gemnoc_2 = { .name = "srvc_sys_gemnoc_2", - .id = SA8775P_SLAVE_SERVICE_GEM_NOC2, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qns_gp_dsp_sail_noc = { .name = "qns_gp_dsp_sail_noc", - .id = SA8775P_SLAVE_GP_DSP_SAIL_NOC, .channels = 1, .buswidth = 16, .num_links = 1, - .links = { SA8775P_MASTER_GPDSP_SAIL }, + .link_nodes = (struct qcom_icc_node *[]) { &qnm_gpdsp_sail }, }; static struct qcom_icc_node qhs_lpass_core = { .name = "qhs_lpass_core", - .id = SA8775P_SLAVE_LPASS_CORE_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_lpass_lpi = { .name = "qhs_lpass_lpi", - .id = SA8775P_SLAVE_LPASS_LPI_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_lpass_mpu = { .name = "qhs_lpass_mpu", - .id = SA8775P_SLAVE_LPASS_MPU_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qhs_lpass_top = { .name = "qhs_lpass_top", - .id = SA8775P_SLAVE_LPASS_TOP_CFG, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qns_sysnoc = { .name = "qns_sysnoc", - .id = SA8775P_SLAVE_LPASS_SNOC, .channels = 1, .buswidth = 16, .num_links = 1, - .links = { SA8775P_MASTER_LPASS_ANOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qnm_lpass_noc }, }; static struct qcom_icc_node srvc_niu_aml_noc = { .name = "srvc_niu_aml_noc", - .id = SA8775P_SLAVE_SERVICES_LPASS_AML_NOC, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node srvc_niu_lpass_agnoc = { .name = "srvc_niu_lpass_agnoc", - .id = SA8775P_SLAVE_SERVICE_LPASS_AG_NOC, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node ebi = { .name = "ebi", - .id = SA8775P_SLAVE_EBI1, .channels = 8, .buswidth = 4, }; static struct qcom_icc_node qns_mem_noc_hf = { .name = "qns_mem_noc_hf", - .id = SA8775P_SLAVE_MNOC_HF_MEM_NOC, .channels = 2, .buswidth = 32, .num_links = 1, - .links = { SA8775P_MASTER_MNOC_HF_MEM_NOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qnm_mnoc_hf }, }; static struct qcom_icc_node qns_mem_noc_sf = { .name = "qns_mem_noc_sf", - .id = SA8775P_SLAVE_MNOC_SF_MEM_NOC, .channels = 2, .buswidth = 32, .num_links = 1, - .links = { SA8775P_MASTER_MNOC_SF_MEM_NOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qnm_mnoc_sf }, }; static struct qcom_icc_node srvc_mnoc_hf = { .name = "srvc_mnoc_hf", - .id = SA8775P_SLAVE_SERVICE_MNOC_HF, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node srvc_mnoc_sf = { .name = "srvc_mnoc_sf", - .id = SA8775P_SLAVE_SERVICE_MNOC_SF, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qns_hcp = { .name = "qns_hcp", - .id = SA8775P_SLAVE_HCP_A, .channels = 2, .buswidth = 32, }; static struct qcom_icc_node qns_nsp_gemnoc = { .name = "qns_nsp_gemnoc", - .id = SA8775P_SLAVE_CDSP_MEM_NOC, .channels = 2, .buswidth = 32, .num_links = 1, - .links = { SA8775P_MASTER_COMPUTE_NOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qnm_cmpnoc0 }, }; static struct qcom_icc_node service_nsp_noc = { .name = "service_nsp_noc", - .id = SA8775P_SLAVE_SERVICE_NSP_NOC, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qns_nspb_gemnoc = { .name = "qns_nspb_gemnoc", - .id = SA8775P_SLAVE_CDSPB_MEM_NOC, .channels = 2, .buswidth = 32, .num_links = 1, - .links = { SA8775P_MASTER_COMPUTE_NOC_1 }, + .link_nodes = (struct qcom_icc_node *[]) { &qnm_cmpnoc1 }, }; static struct qcom_icc_node qns_nspb_hcp = { .name = "qns_nspb_hcp", - .id = SA8775P_SLAVE_HCP_B, .channels = 2, .buswidth = 32, }; static struct qcom_icc_node service_nspb_noc = { .name = "service_nspb_noc", - .id = SA8775P_SLAVE_SERVICE_NSPB_NOC, .channels = 1, .buswidth = 4, }; static struct qcom_icc_node qns_pcie_mem_noc = { .name = "qns_pcie_mem_noc", - .id = SA8775P_SLAVE_ANOC_PCIE_GEM_NOC, .channels = 1, .buswidth = 32, .num_links = 1, - .links = { SA8775P_MASTER_ANOC_PCIE_GEM_NOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qnm_pcie }, }; static struct qcom_icc_node qns_gemnoc_gc = { .name = "qns_gemnoc_gc", - .id = SA8775P_SLAVE_SNOC_GEM_NOC_GC, .channels = 1, .buswidth = 8, .num_links = 1, - .links = { SA8775P_MASTER_SNOC_GC_MEM_NOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qnm_snoc_gc }, }; static struct qcom_icc_node qns_gemnoc_sf = { .name = "qns_gemnoc_sf", - .id = SA8775P_SLAVE_SNOC_GEM_NOC_SF, .channels = 1, .buswidth = 16, .num_links = 1, - .links = { SA8775P_MASTER_SNOC_SF_MEM_NOC }, + .link_nodes = (struct qcom_icc_node *[]) { &qnm_snoc_sf }, }; static struct qcom_icc_node srvc_snoc = { .name = "srvc_snoc", - .id = SA8775P_SLAVE_SERVICE_SNOC, .channels = 1, .buswidth = 4, }; @@ -2113,6 +1841,7 @@ static const struct qcom_icc_desc sa8775p_aggre1_noc = { .num_nodes = ARRAY_SIZE(aggre1_noc_nodes), .bcms = aggre1_noc_bcms, .num_bcms = ARRAY_SIZE(aggre1_noc_bcms), + .alloc_dyn_id = true, }; static struct qcom_icc_bcm * const aggre2_noc_bcms[] = { @@ -2140,6 +1869,7 @@ static const struct qcom_icc_desc sa8775p_aggre2_noc = { .num_nodes = ARRAY_SIZE(aggre2_noc_nodes), .bcms = aggre2_noc_bcms, .num_bcms = ARRAY_SIZE(aggre2_noc_bcms), + .alloc_dyn_id = true, }; static struct qcom_icc_bcm * const clk_virt_bcms[] = { @@ -2164,6 +1894,7 @@ static const struct qcom_icc_desc sa8775p_clk_virt = { .num_nodes = ARRAY_SIZE(clk_virt_nodes), .bcms = clk_virt_bcms, .num_bcms = ARRAY_SIZE(clk_virt_bcms), + .alloc_dyn_id = true, }; static struct qcom_icc_bcm * const config_noc_bcms[] = { @@ -2269,6 +2000,7 @@ static const struct qcom_icc_desc sa8775p_config_noc = { .num_nodes = ARRAY_SIZE(config_noc_nodes), .bcms = config_noc_bcms, .num_bcms = ARRAY_SIZE(config_noc_bcms), + .alloc_dyn_id = true, }; static struct qcom_icc_bcm * const dc_noc_bcms[] = { @@ -2285,6 +2017,7 @@ static const struct qcom_icc_desc sa8775p_dc_noc = { .num_nodes = ARRAY_SIZE(dc_noc_nodes), .bcms = dc_noc_bcms, .num_bcms = ARRAY_SIZE(dc_noc_bcms), + .alloc_dyn_id = true, }; static struct qcom_icc_bcm * const gem_noc_bcms[] = { @@ -2321,6 +2054,7 @@ static const struct qcom_icc_desc sa8775p_gem_noc = { .num_nodes = ARRAY_SIZE(gem_noc_nodes), .bcms = gem_noc_bcms, .num_bcms = ARRAY_SIZE(gem_noc_bcms), + .alloc_dyn_id = true, }; static struct qcom_icc_bcm * const gpdsp_anoc_bcms[] = { @@ -2339,6 +2073,7 @@ static const struct qcom_icc_desc sa8775p_gpdsp_anoc = { .num_nodes = ARRAY_SIZE(gpdsp_anoc_nodes), .bcms = gpdsp_anoc_bcms, .num_bcms = ARRAY_SIZE(gpdsp_anoc_bcms), + .alloc_dyn_id = true, }; static struct qcom_icc_bcm * const lpass_ag_noc_bcms[] = { @@ -2362,6 +2097,7 @@ static const struct qcom_icc_desc sa8775p_lpass_ag_noc = { .num_nodes = ARRAY_SIZE(lpass_ag_noc_nodes), .bcms = lpass_ag_noc_bcms, .num_bcms = ARRAY_SIZE(lpass_ag_noc_bcms), + .alloc_dyn_id = true, }; static struct qcom_icc_bcm * const mc_virt_bcms[] = { @@ -2379,6 +2115,7 @@ static const struct qcom_icc_desc sa8775p_mc_virt = { .num_nodes = ARRAY_SIZE(mc_virt_nodes), .bcms = mc_virt_bcms, .num_bcms = ARRAY_SIZE(mc_virt_bcms), + .alloc_dyn_id = true, }; static struct qcom_icc_bcm * const mmss_noc_bcms[] = { @@ -2411,6 +2148,7 @@ static const struct qcom_icc_desc sa8775p_mmss_noc = { .num_nodes = ARRAY_SIZE(mmss_noc_nodes), .bcms = mmss_noc_bcms, .num_bcms = ARRAY_SIZE(mmss_noc_bcms), + .alloc_dyn_id = true, }; static struct qcom_icc_bcm * const nspa_noc_bcms[] = { @@ -2431,6 +2169,7 @@ static const struct qcom_icc_desc sa8775p_nspa_noc = { .num_nodes = ARRAY_SIZE(nspa_noc_nodes), .bcms = nspa_noc_bcms, .num_bcms = ARRAY_SIZE(nspa_noc_bcms), + .alloc_dyn_id = true, }; static struct qcom_icc_bcm * const nspb_noc_bcms[] = { @@ -2451,6 +2190,7 @@ static const struct qcom_icc_desc sa8775p_nspb_noc = { .num_nodes = ARRAY_SIZE(nspb_noc_nodes), .bcms = nspb_noc_bcms, .num_bcms = ARRAY_SIZE(nspb_noc_bcms), + .alloc_dyn_id = true, }; static struct qcom_icc_bcm * const pcie_anoc_bcms[] = { @@ -2468,6 +2208,7 @@ static const struct qcom_icc_desc sa8775p_pcie_anoc = { .num_nodes = ARRAY_SIZE(pcie_anoc_nodes), .bcms = pcie_anoc_bcms, .num_bcms = ARRAY_SIZE(pcie_anoc_bcms), + .alloc_dyn_id = true, }; static struct qcom_icc_bcm * const system_noc_bcms[] = { @@ -2496,6 +2237,7 @@ static const struct qcom_icc_desc sa8775p_system_noc = { .num_nodes = ARRAY_SIZE(system_noc_nodes), .bcms = system_noc_bcms, .num_bcms = ARRAY_SIZE(system_noc_bcms), + .alloc_dyn_id = true, }; static const struct of_device_id qnoc_of_match[] = { -- cgit v1.2.3 From fc788c4068e0a1b3a43e45df18745c181bfab03c Mon Sep 17 00:00:00 2001 From: Anandu Krishnan E Date: Mon, 10 Mar 2025 14:24:17 +0530 Subject: misc: fastrpc: Add meaningful labels for exit paths In the fastrpc_rpmsg_probe function, the exit path labels are not intuitive and do not clearly indicate the purpose of the goto statements. Rename goto labels to make it more intuitive and to align with labels of other functions. Signed-off-by: Anandu Krishnan E Reviewed-by: Dmitry Baryshkov Link: https://lore.kernel.org/r/20250310085417.25559-1-quic_anane@quicinc.com Signed-off-by: Greg Kroah-Hartman --- drivers/misc/fastrpc.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c index 7b7a22c91fe4..378923594f02 100644 --- a/drivers/misc/fastrpc.c +++ b/drivers/misc/fastrpc.c @@ -2313,7 +2313,7 @@ static int fastrpc_rpmsg_probe(struct rpmsg_device *rpdev) rmem = of_reserved_mem_lookup(rmem_node); if (!rmem) { err = -EINVAL; - goto fdev_error; + goto err_free_data; } src_perms = BIT(QCOM_SCM_VMID_HLOS); @@ -2334,7 +2334,7 @@ static int fastrpc_rpmsg_probe(struct rpmsg_device *rpdev) data->unsigned_support = false; err = fastrpc_device_register(rdev, data, secure_dsp, domains[domain_id]); if (err) - goto fdev_error; + goto err_free_data; break; case CDSP_DOMAIN_ID: case CDSP1_DOMAIN_ID: @@ -2342,15 +2342,15 @@ static int fastrpc_rpmsg_probe(struct rpmsg_device *rpdev) /* Create both device nodes so that we can allow both Signed and Unsigned PD */ err = fastrpc_device_register(rdev, data, true, domains[domain_id]); if (err) - goto fdev_error; + goto err_free_data; err = fastrpc_device_register(rdev, data, false, domains[domain_id]); if (err) - goto populate_error; + goto err_deregister_fdev; break; default: err = -EINVAL; - goto fdev_error; + goto err_free_data; } kref_init(&data->refcount); @@ -2367,17 +2367,17 @@ static int fastrpc_rpmsg_probe(struct rpmsg_device *rpdev) err = of_platform_populate(rdev->of_node, NULL, NULL, rdev); if (err) - goto populate_error; + goto err_deregister_fdev; return 0; -populate_error: +err_deregister_fdev: if (data->fdevice) misc_deregister(&data->fdevice->miscdev); if (data->secure_fdevice) misc_deregister(&data->secure_fdevice->miscdev); -fdev_error: +err_free_data: kfree(data); return err; } -- cgit v1.2.3 From a99b598d836c9c6411110c70a2da134c78d96e67 Mon Sep 17 00:00:00 2001 From: Chenyuan Yang Date: Mon, 10 Mar 2025 20:05:11 -0500 Subject: misc: tps6594-pfsm: Add NULL pointer check in tps6594_pfsm_probe() The returned value, pfsm->miscdev.name, from devm_kasprintf() could be NULL. A pointer check is added to prevent potential NULL pointer dereference. This is similar to the fix in commit 3027e7b15b02 ("ice: Fix some null pointer dereference issues in ice_ptp.c"). This issue is found by our static analysis tool. Signed-off-by: Chenyuan Yang Link: https://lore.kernel.org/r/20250311010511.1028269-1-chenyuan0y@gmail.com Signed-off-by: Greg Kroah-Hartman --- drivers/misc/tps6594-pfsm.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/misc/tps6594-pfsm.c b/drivers/misc/tps6594-pfsm.c index 0a24ce44cc37..6db1c9d48f8f 100644 --- a/drivers/misc/tps6594-pfsm.c +++ b/drivers/misc/tps6594-pfsm.c @@ -281,6 +281,9 @@ static int tps6594_pfsm_probe(struct platform_device *pdev) pfsm->miscdev.minor = MISC_DYNAMIC_MINOR; pfsm->miscdev.name = devm_kasprintf(dev, GFP_KERNEL, "pfsm-%ld-0x%02x", tps->chip_id, tps->reg); + if (!pfsm->miscdev.name) + return -ENOMEM; + pfsm->miscdev.fops = &tps6594_pfsm_fops; pfsm->miscdev.parent = dev->parent; pfsm->chip_id = tps->chip_id; -- cgit v1.2.3 From e1ee28b126755d706e9efbc6f78f45165200d475 Mon Sep 17 00:00:00 2001 From: "Gustavo A. R. Silva" Date: Fri, 14 Mar 2025 09:06:16 +1030 Subject: misc: bcm-vk: avoid -Wflex-array-member-not-at-end warning Fix the following warning by removing unused flex-array member `data` in `struct bcm_vk_peer_log`: drivers/misc/bcm-vk/bcm_vk.h:415:32: warning: structure containing a flexible array member is not at the end of another structure [-Wflex-array-member-not-at-end] Signed-off-by: Gustavo A. R. Silva Acked-by: Scott Branden Link: https://lore.kernel.org/r/Z9Nd4AmgrQDiK1Gn@kspp Signed-off-by: Greg Kroah-Hartman --- drivers/misc/bcm-vk/bcm_vk.h | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/misc/bcm-vk/bcm_vk.h b/drivers/misc/bcm-vk/bcm_vk.h index 386884c2a263..9344c2366a4b 100644 --- a/drivers/misc/bcm-vk/bcm_vk.h +++ b/drivers/misc/bcm-vk/bcm_vk.h @@ -311,7 +311,6 @@ struct bcm_vk_peer_log { u32 wr_idx; u32 buf_size; u32 mask; - char data[]; }; /* max buf size allowed */ -- cgit v1.2.3 From b41381a0bdccf5dfd60815bdccaa7e3b41189f42 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Tue, 18 Mar 2025 09:57:28 +0100 Subject: misc: eeprom/idt_89hpesx: use per-client debugfs directory The I2C core now provides a debugfs entry for each client. Let this driver use it instead of the custom directory. Signed-off-by: Wolfram Sang Link: https://lore.kernel.org/r/20250318085727.20748-2-wsa+renesas@sang-engineering.com Signed-off-by: Greg Kroah-Hartman --- drivers/misc/eeprom/idt_89hpesx.c | 75 ++------------------------------------- 1 file changed, 2 insertions(+), 73 deletions(-) diff --git a/drivers/misc/eeprom/idt_89hpesx.c b/drivers/misc/eeprom/idt_89hpesx.c index 1fc632ebf22f..60c42170d147 100644 --- a/drivers/misc/eeprom/idt_89hpesx.c +++ b/drivers/misc/eeprom/idt_89hpesx.c @@ -60,11 +60,6 @@ MODULE_VERSION(IDT_89HPESX_VER); MODULE_LICENSE("GPL v2"); MODULE_AUTHOR("T-platforms"); -/* - * csr_dbgdir - CSR read/write operations Debugfs directory - */ -static struct dentry *csr_dbgdir; - /* * struct idt_89hpesx_dev - IDT 89HPESx device data structure * @eesize: Size of EEPROM in bytes (calculated from "idt,eecompatible") @@ -1324,35 +1319,6 @@ static void idt_remove_sysfs_files(struct idt_89hpesx_dev *pdev) sysfs_remove_bin_file(&dev->kobj, pdev->ee_file); } -/* - * idt_create_dbgfs_files() - create debugfs files - * @pdev: Pointer to the driver data - */ -#define CSRNAME_LEN ((size_t)32) -static void idt_create_dbgfs_files(struct idt_89hpesx_dev *pdev) -{ - struct i2c_client *cli = pdev->client; - char fname[CSRNAME_LEN]; - - /* Create Debugfs directory for CSR file */ - snprintf(fname, CSRNAME_LEN, "%d-%04hx", cli->adapter->nr, cli->addr); - pdev->csr_dir = debugfs_create_dir(fname, csr_dbgdir); - - /* Create Debugfs file for CSR read/write operations */ - debugfs_create_file(cli->name, 0600, pdev->csr_dir, pdev, - &csr_dbgfs_ops); -} - -/* - * idt_remove_dbgfs_files() - remove debugfs files - * @pdev: Pointer to the driver data - */ -static void idt_remove_dbgfs_files(struct idt_89hpesx_dev *pdev) -{ - /* Remove CSR directory and it sysfs-node */ - debugfs_remove_recursive(pdev->csr_dir); -} - /* * idt_probe() - IDT 89HPESx driver probe() callback method */ @@ -1382,7 +1348,7 @@ static int idt_probe(struct i2c_client *client) goto err_free_pdev; /* Create debugfs files */ - idt_create_dbgfs_files(pdev); + debugfs_create_file(pdev->client->name, 0600, client->debugfs, pdev, &csr_dbgfs_ops); return 0; @@ -1399,9 +1365,6 @@ static void idt_remove(struct i2c_client *client) { struct idt_89hpesx_dev *pdev = i2c_get_clientdata(client); - /* Remove debugfs files first */ - idt_remove_dbgfs_files(pdev); - /* Remove sysfs files */ idt_remove_sysfs_files(pdev); @@ -1550,38 +1513,4 @@ static struct i2c_driver idt_driver = { .remove = idt_remove, .id_table = idt_ids, }; - -/* - * idt_init() - IDT 89HPESx driver init() callback method - */ -static int __init idt_init(void) -{ - int ret; - - /* Create Debugfs directory first */ - if (debugfs_initialized()) - csr_dbgdir = debugfs_create_dir("idt_csr", NULL); - - /* Add new i2c-device driver */ - ret = i2c_add_driver(&idt_driver); - if (ret) { - debugfs_remove_recursive(csr_dbgdir); - return ret; - } - - return 0; -} -module_init(idt_init); - -/* - * idt_exit() - IDT 89HPESx driver exit() callback method - */ -static void __exit idt_exit(void) -{ - /* Discard debugfs directory and all files if any */ - debugfs_remove_recursive(csr_dbgdir); - - /* Unregister i2c-device driver */ - i2c_del_driver(&idt_driver); -} -module_exit(idt_exit); +module_i2c_driver(idt_driver); -- cgit v1.2.3 From 84d1ee548f4add582aa1923f30cf379c9c068ea5 Mon Sep 17 00:00:00 2001 From: Ricky Wu Date: Fri, 14 Mar 2025 17:40:13 +0800 Subject: misc: rtsx: Enhance the signal handling processes in SVID/SSID 1028:0CE1 platform This patch introduces improvements to the signal handling processes on the SVID/SSID 1028:0CE1 platform. By optimizing signal handling processes we aim to deliver a more stable and reliable user experience. The enhancements ensure robust connectivity and enhance signal process performance. We have conducted extensive testing to ensure these modifications result in noticeable improvements without impacting existing functionalities. Signed-off-by: Ricky Wu Link: https://lore.kernel.org/r/20250314094013.663223-1-ricky_wu@realtek.com Signed-off-by: Greg Kroah-Hartman --- drivers/misc/cardreader/rts5264.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/misc/cardreader/rts5264.c b/drivers/misc/cardreader/rts5264.c index 8be4ed7d9d47..06d7a8a95fd6 100644 --- a/drivers/misc/cardreader/rts5264.c +++ b/drivers/misc/cardreader/rts5264.c @@ -605,6 +605,22 @@ static int rts5264_extra_init_hw(struct rtsx_pcr *pcr) return 0; } +static int rts5264_optimize_phy(struct rtsx_pcr *pcr) +{ + u16 subvendor, subdevice, val; + + subvendor = pcr->pci->subsystem_vendor; + subdevice = pcr->pci->subsystem_device; + + if ((subvendor == 0x1028) && (subdevice == 0x0CE1)) { + rtsx_pci_read_phy_register(pcr, _PHY_REV0, &val); + if ((val & 0xFE00) > 0x3800) + rtsx_pci_update_phy(pcr, _PHY_REV0, 0x1FF, 0x3800); + } + + return 0; +} + static void rts5264_enable_aspm(struct rtsx_pcr *pcr, bool enable) { u8 val = FORCE_ASPM_CTL0 | FORCE_ASPM_CTL1; @@ -682,6 +698,7 @@ static const struct pcr_ops rts5264_pcr_ops = { .turn_on_led = rts5264_turn_on_led, .turn_off_led = rts5264_turn_off_led, .extra_init_hw = rts5264_extra_init_hw, + .optimize_phy = rts5264_optimize_phy, .enable_auto_blink = rts5264_enable_auto_blink, .disable_auto_blink = rts5264_disable_auto_blink, .card_power_on = rts5264_card_power_on, -- cgit v1.2.3 From 92d2261214a52f1c3a0db027b7818363acfb04c7 Mon Sep 17 00:00:00 2001 From: "Tiffany Y. Yang" Date: Tue, 1 Apr 2025 20:28:46 +0000 Subject: binder: use buffer offsets in debug logs Identify buffer addresses using vma offsets instead of full user addresses in debug logs or drop them if they are not useful. Signed-off-by: Tiffany Y. Yang Acked-by: Carlos Llamas Reviewed-by: Lee Jones Link: https://lore.kernel.org/r/20250401202846.3510162-2-ynaffit@google.com Signed-off-by: Greg Kroah-Hartman --- drivers/android/binder.c | 27 +++++++++++---------------- 1 file changed, 11 insertions(+), 16 deletions(-) diff --git a/drivers/android/binder.c b/drivers/android/binder.c index 76052006bd87..9f215391ac7a 100644 --- a/drivers/android/binder.c +++ b/drivers/android/binder.c @@ -3261,20 +3261,16 @@ static void binder_transaction(struct binder_proc *proc, if (reply) binder_debug(BINDER_DEBUG_TRANSACTION, - "%d:%d BC_REPLY %d -> %d:%d, data %016llx-%016llx size %lld-%lld-%lld\n", + "%d:%d BC_REPLY %d -> %d:%d, data size %lld-%lld-%lld\n", proc->pid, thread->pid, t->debug_id, target_proc->pid, target_thread->pid, - (u64)tr->data.ptr.buffer, - (u64)tr->data.ptr.offsets, (u64)tr->data_size, (u64)tr->offsets_size, (u64)extra_buffers_size); else binder_debug(BINDER_DEBUG_TRANSACTION, - "%d:%d BC_TRANSACTION %d -> %d - node %d, data %016llx-%016llx size %lld-%lld-%lld\n", + "%d:%d BC_TRANSACTION %d -> %d - node %d, data size %lld-%lld-%lld\n", proc->pid, thread->pid, t->debug_id, target_proc->pid, target_node->debug_id, - (u64)tr->data.ptr.buffer, - (u64)tr->data.ptr.offsets, (u64)tr->data_size, (u64)tr->offsets_size, (u64)extra_buffers_size); @@ -4223,20 +4219,21 @@ static int binder_thread_write(struct binder_proc *proc, if (IS_ERR_OR_NULL(buffer)) { if (PTR_ERR(buffer) == -EPERM) { binder_user_error( - "%d:%d BC_FREE_BUFFER u%016llx matched unreturned or currently freeing buffer\n", + "%d:%d BC_FREE_BUFFER matched unreturned or currently freeing buffer at offset %lx\n", proc->pid, thread->pid, - (u64)data_ptr); + (unsigned long)data_ptr - proc->alloc.vm_start); } else { binder_user_error( - "%d:%d BC_FREE_BUFFER u%016llx no match\n", + "%d:%d BC_FREE_BUFFER no match for buffer at offset %lx\n", proc->pid, thread->pid, - (u64)data_ptr); + (unsigned long)data_ptr - proc->alloc.vm_start); } break; } binder_debug(BINDER_DEBUG_FREE_BUFFER, - "%d:%d BC_FREE_BUFFER u%016llx found buffer %d for %s transaction\n", - proc->pid, thread->pid, (u64)data_ptr, + "%d:%d BC_FREE_BUFFER at offset %lx found buffer %d for %s transaction\n", + proc->pid, thread->pid, + (unsigned long)data_ptr - proc->alloc.vm_start, buffer->debug_id, buffer->transaction ? "active" : "finished"); binder_free_buf(proc, thread, buffer, false); @@ -5053,16 +5050,14 @@ retry: trace_binder_transaction_received(t); binder_stat_br(proc, thread, cmd); binder_debug(BINDER_DEBUG_TRANSACTION, - "%d:%d %s %d %d:%d, cmd %u size %zd-%zd ptr %016llx-%016llx\n", + "%d:%d %s %d %d:%d, cmd %u size %zd-%zd\n", proc->pid, thread->pid, (cmd == BR_TRANSACTION) ? "BR_TRANSACTION" : (cmd == BR_TRANSACTION_SEC_CTX) ? "BR_TRANSACTION_SEC_CTX" : "BR_REPLY", t->debug_id, t_from ? t_from->proc->pid : 0, t_from ? t_from->pid : 0, cmd, - t->buffer->data_size, t->buffer->offsets_size, - (u64)trd->data.ptr.buffer, - (u64)trd->data.ptr.offsets); + t->buffer->data_size, t->buffer->offsets_size); if (t_from) binder_thread_dec_tmpref(t_from); -- cgit v1.2.3 From e17f487f2f774c4dcd76725782b0e781257c343d Mon Sep 17 00:00:00 2001 From: Bartosz Golaszewski Date: Tue, 8 Apr 2025 09:00:48 +0200 Subject: misc: microchip: pci1xxxx: use new GPIO line value setter callbacks struct gpio_chip now has callbacks for setting line values that return an integer, allowing to indicate failures. Convert the driver to using them. Signed-off-by: Bartosz Golaszewski Link: https://lore.kernel.org/r/20250408-gpiochip-set-rv-misc-v1-1-eb6345aea5cd@linaro.org Signed-off-by: Greg Kroah-Hartman --- drivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_gpio.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_gpio.c b/drivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_gpio.c index 04756302b878..abb1901d3dc6 100644 --- a/drivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_gpio.c +++ b/drivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_gpio.c @@ -114,8 +114,7 @@ static int pci1xxxx_gpio_direction_output(struct gpio_chip *gpio, return 0; } -static void pci1xxxx_gpio_set(struct gpio_chip *gpio, - unsigned int nr, int val) +static int pci1xxxx_gpio_set(struct gpio_chip *gpio, unsigned int nr, int val) { struct pci1xxxx_gpio *priv = gpiochip_get_data(gpio); unsigned long flags; @@ -123,6 +122,8 @@ static void pci1xxxx_gpio_set(struct gpio_chip *gpio, spin_lock_irqsave(&priv->lock, flags); pci1xxx_assign_bit(priv->reg_base, OUT_OFFSET(nr), (nr % 32), val); spin_unlock_irqrestore(&priv->lock, flags); + + return 0; } static int pci1xxxx_gpio_set_config(struct gpio_chip *gpio, unsigned int offset, @@ -345,7 +346,7 @@ static int pci1xxxx_gpio_setup(struct pci1xxxx_gpio *priv, int irq) gchip->direction_output = pci1xxxx_gpio_direction_output; gchip->get_direction = pci1xxxx_gpio_get_direction; gchip->get = pci1xxxx_gpio_get; - gchip->set = pci1xxxx_gpio_set; + gchip->set_rv = pci1xxxx_gpio_set; gchip->set_config = pci1xxxx_gpio_set_config; gchip->dbg_show = NULL; gchip->base = -1; -- cgit v1.2.3 From 577f88cf24e4532c0f802596c7452da583d79ea6 Mon Sep 17 00:00:00 2001 From: Chen Ni Date: Mon, 14 Apr 2025 15:45:59 +0800 Subject: char: xillybus: Use to_delayed_work() Use to_delayed_work() instead of open-coding it. Signed-off-by: Chen Ni Acked-by: Eli Billauer Link: https://lore.kernel.org/r/20250414074559.3954142-1-nichen@iscas.ac.cn Signed-off-by: Greg Kroah-Hartman --- drivers/char/xillybus/xillybus_core.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/char/xillybus/xillybus_core.c b/drivers/char/xillybus/xillybus_core.c index 11b7c4749274..efb1ae834265 100644 --- a/drivers/char/xillybus/xillybus_core.c +++ b/drivers/char/xillybus/xillybus_core.c @@ -1184,8 +1184,7 @@ static int xillybus_flush(struct file *filp, fl_owner_t id) static void xillybus_autoflush(struct work_struct *work) { - struct delayed_work *workitem = container_of( - work, struct delayed_work, work); + struct delayed_work *workitem = to_delayed_work(work); struct xilly_channel *channel = container_of( workitem, struct xilly_channel, rd_workitem); int rc; -- cgit v1.2.3 From dd09eb0e2cc4ba91cd64dba2b733d3f8e1248fd8 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Mon, 7 Apr 2025 10:29:35 -0700 Subject: EISA: Increase length of device names GCC 15's -Wunterminated-string-initialization warned about truncated name strings. Instead of marking them with the "nonstring" attribute[1], increase their length to correctly include enough space for the terminating NUL character, as they are used with %s format specifiers when showing resource allocations in /proc/ioports: seq_printf(m, "%*s%0*llx-%0*llx : %s\n", ..., r->name); The strings in eisa.ids have a max length of 73, and the 50 limit was an arbitrary limit that was removed back in 2008 with commit ca52a49846f1 ("driver core: remove DEVICE_NAME_SIZE define"). Change the limit to 74 so nothing is truncated any more. Additionally fix the Makefile to use "if_changed" instead of "cmd" to detect changes to the command line used to generate the target, otherwise devlist.h won't be rebuilt. Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117178 [1] Signed-off-by: Kees Cook Acked-by: Alejandro Colomar Link: https://lore.kernel.org/r/20250407172926.it.281-kees@kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/eisa/Makefile | 11 ++++------- drivers/eisa/eisa-bus.c | 2 +- include/linux/eisa.h | 5 ++++- 3 files changed, 9 insertions(+), 9 deletions(-) diff --git a/drivers/eisa/Makefile b/drivers/eisa/Makefile index a1dd0eaec2d4..f0d6cf7d1f32 100644 --- a/drivers/eisa/Makefile +++ b/drivers/eisa/Makefile @@ -1,7 +1,7 @@ # SPDX-License-Identifier: GPL-2.0 # Makefile for the Linux device tree -obj-$(CONFIG_EISA) += eisa-bus.o +obj-$(CONFIG_EISA) += devlist.h eisa-bus.o obj-${CONFIG_EISA_PCI_EISA} += pci_eisa.o # virtual_root.o should be the last EISA root device to initialize, @@ -9,14 +9,11 @@ obj-${CONFIG_EISA_PCI_EISA} += pci_eisa.o obj-${CONFIG_EISA_VIRTUAL_ROOT} += virtual_root.o -# Ugly hack to get DEVICE_NAME_SIZE value... -DEVICE_NAME_SIZE = 50 - $(obj)/eisa-bus.o: $(obj)/devlist.h quiet_cmd_eisaid = GEN $@ - cmd_eisaid = sed -e '/^\#/D' -e 's/^\([[:alnum:]]\{7\}\) \+"\([^"]\{1,$(DEVICE_NAME_SIZE)\}\).*"/EISA_DEVINFO ("\1", "\2"),/' $< > $@ + cmd_eisaid = sed -e '/^\#/D' -e 's/^\([[:alnum:]]\{7\}\) \+"\([^"]*\)"/EISA_DEVINFO ("\1", "\2"),/' $< > $@ clean-files := devlist.h -$(obj)/devlist.h: $(src)/eisa.ids include/linux/device.h - $(call cmd,eisaid) +$(obj)/devlist.h: $(src)/eisa.ids include/linux/device.h FORCE + $(call if_changed,eisaid) diff --git a/drivers/eisa/eisa-bus.c b/drivers/eisa/eisa-bus.c index cb586a362944..edceea083b98 100644 --- a/drivers/eisa/eisa-bus.c +++ b/drivers/eisa/eisa-bus.c @@ -21,7 +21,7 @@ struct eisa_device_info { struct eisa_device_id id; - char name[50]; + char name[EISA_DEVICE_INFO_NAME_SIZE]; }; #ifdef CONFIG_EISA_NAMES diff --git a/include/linux/eisa.h b/include/linux/eisa.h index f98200cae637..21a2ecc1e538 100644 --- a/include/linux/eisa.h +++ b/include/linux/eisa.h @@ -28,6 +28,9 @@ #define EISA_CONFIG_ENABLED 1 #define EISA_CONFIG_FORCED 2 +/* Chosen to hold the longest string in eisa.ids. */ +#define EISA_DEVICE_INFO_NAME_SIZE 74 + /* There is not much we can say about an EISA device, apart from * signature, slot number, and base address. dma_mask is set by * default to parent device mask..*/ @@ -41,7 +44,7 @@ struct eisa_device { u64 dma_mask; struct device dev; /* generic device */ #ifdef CONFIG_EISA_NAMES - char pretty_name[50]; + char pretty_name[EISA_DEVICE_INFO_NAME_SIZE]; #endif }; -- cgit v1.2.3 From d062463edf1770427dc2d637df4088df4835aa47 Mon Sep 17 00:00:00 2001 From: Long Li Date: Mon, 10 Mar 2025 15:12:01 -0700 Subject: uio_hv_generic: Set event for all channels on the device Hyper-V may offer a non latency sensitive device with subchannels without monitor bit enabled. The decision is entirely on the Hyper-V host not configurable within guest. When a device has subchannels, also signal events for the subchannel if its monitor bit is disabled. This patch also removes the memory barrier when monitor bit is enabled as it is not necessary. The memory barrier is only needed between setting up interrupt mask and calling vmbus_set_event() when monitor bit is disabled. Signed-off-by: Long Li Reviewed-by: Michael Kelley Reviewed-by: Saurabh Sengar Link: https://lore.kernel.org/r/1741644721-20389-1-git-send-email-longli@linuxonhyperv.com Signed-off-by: Greg Kroah-Hartman --- drivers/uio/uio_hv_generic.c | 32 ++++++++++++++++++++++++++------ 1 file changed, 26 insertions(+), 6 deletions(-) diff --git a/drivers/uio/uio_hv_generic.c b/drivers/uio/uio_hv_generic.c index 1b19b5647495..5c017860d380 100644 --- a/drivers/uio/uio_hv_generic.c +++ b/drivers/uio/uio_hv_generic.c @@ -65,6 +65,16 @@ struct hv_uio_private_data { char send_name[32]; }; +static void set_event(struct vmbus_channel *channel, s32 irq_state) +{ + channel->inbound.ring_buffer->interrupt_mask = !irq_state; + if (!channel->offermsg.monitor_allocated && irq_state) { + /* MB is needed for host to see the interrupt mask first */ + virt_mb(); + vmbus_set_event(channel); + } +} + /* * This is the irqcontrol callback to be registered to uio_info. * It can be used to disable/enable interrupt from user space processes. @@ -79,12 +89,15 @@ hv_uio_irqcontrol(struct uio_info *info, s32 irq_state) { struct hv_uio_private_data *pdata = info->priv; struct hv_device *dev = pdata->device; + struct vmbus_channel *primary, *sc; - dev->channel->inbound.ring_buffer->interrupt_mask = !irq_state; - virt_mb(); + primary = dev->channel; + set_event(primary, irq_state); - if (!dev->channel->offermsg.monitor_allocated && irq_state) - vmbus_setevent(dev->channel); + mutex_lock(&vmbus_connection.channel_mutex); + list_for_each_entry(sc, &primary->sc_list, sc_list) + set_event(sc, irq_state); + mutex_unlock(&vmbus_connection.channel_mutex); return 0; } @@ -95,12 +108,19 @@ hv_uio_irqcontrol(struct uio_info *info, s32 irq_state) static void hv_uio_channel_cb(void *context) { struct vmbus_channel *chan = context; - struct hv_device *hv_dev = chan->device_obj; - struct hv_uio_private_data *pdata = hv_get_drvdata(hv_dev); + struct hv_device *hv_dev; + struct hv_uio_private_data *pdata; chan->inbound.ring_buffer->interrupt_mask = 1; virt_mb(); + /* + * The callback may come from a subchannel, in which case look + * for the hv device in the primary channel + */ + hv_dev = chan->primary_channel ? + chan->primary_channel->device_obj : chan->device_obj; + pdata = hv_get_drvdata(hv_dev); uio_event_notify(&pdata->info); } -- cgit v1.2.3 From 7ae52a3d7f511c95dad414441db7cfdd6356d88a Mon Sep 17 00:00:00 2001 From: Sasha Levin Date: Tue, 11 Mar 2025 12:53:36 -0400 Subject: scripts: Add git-resolve tool for full SHA-1 resolution Introduce git-resolve.sh, a tool that resolves short git commit IDs to their full SHA-1 hash. This is particularly useful for navigating references in commit messages and verifying Fixes tags. When faced with ambiguous commit IDs or imprecise references in messages, this tool can help by resolving commit hashes based on not just the ID itself but also the commit subject, making it more robust than standard git rev-parse. This is especially valuable for maintainers who need to verify Fixes tags or cross-reference commits. Unlike proposals to add dates to Fixes tags (which would break existing tooling), this script provides a way to disambiguate commits without changing the established tag format. The script includes several features: - Resolves short commit IDs to full SHA-1 hashes - Uses commit subjects to disambiguate between multiple potential matches - Supports wildcard patterns in subjects with ellipsis (...) - Provides a force mode to attempt resolution by subject when ID lookup fails - Includes comprehensive self-tests Signed-off-by: Sasha Levin Reviewed-by: Kees Cook Link: https://lore.kernel.org/r/20250311165336.248120-1-sashal@kernel.org Signed-off-by: Greg Kroah-Hartman --- scripts/git-resolve.sh | 199 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 199 insertions(+) create mode 100755 scripts/git-resolve.sh diff --git a/scripts/git-resolve.sh b/scripts/git-resolve.sh new file mode 100755 index 000000000000..204a8c9bd4ea --- /dev/null +++ b/scripts/git-resolve.sh @@ -0,0 +1,199 @@ +#!/bin/bash + +usage() { + echo "Usage: $(basename "$0") [--selftest] [--force] [commit-subject]" + echo "Resolves a short git commit ID to its full SHA-1 hash, particularly useful for fixing references in commit messages." + echo "" + echo "Arguments:" + echo " --selftest Run self-tests" + echo " --force Try to find commit by subject if ID lookup fails" + echo " commit-id Short git commit ID to resolve" + echo " commit-subject Optional commit subject to help resolve between multiple matches" + exit 1 +} + +# Convert subject with ellipsis to grep pattern +convert_to_grep_pattern() { + local subject="$1" + # First escape ALL regex special characters + local escaped_subject + escaped_subject=$(printf '%s\n' "$subject" | sed 's/[[\.*^$()+?{}|]/\\&/g') + # Also escape colons, parentheses, and hyphens as they are special in our context + escaped_subject=$(echo "$escaped_subject" | sed 's/[:-]/\\&/g') + # Then convert escaped ... sequence to .*? + escaped_subject=$(echo "$escaped_subject" | sed 's/\\\.\\\.\\\./.*?/g') + echo "^${escaped_subject}$" +} + +git_resolve_commit() { + local force=0 + if [ "$1" = "--force" ]; then + force=1 + shift + fi + + # Split input into commit ID and subject + local input="$*" + local commit_id="${input%% *}" + local subject="" + + # Extract subject if present (everything after the first space) + if [[ "$input" == *" "* ]]; then + subject="${input#* }" + # Strip the ("...") quotes if present + subject="${subject#*(\"}" + subject="${subject%\")*}" + fi + + # Get all possible matching commit IDs + local matches + readarray -t matches < <(git rev-parse --disambiguate="$commit_id" 2>/dev/null) + + # Return immediately if we have exactly one match + if [ ${#matches[@]} -eq 1 ]; then + echo "${matches[0]}" + return 0 + fi + + # If no matches and not in force mode, return failure + if [ ${#matches[@]} -eq 0 ] && [ $force -eq 0 ]; then + return 1 + fi + + # If we have a subject, try to find a match with that subject + if [ -n "$subject" ]; then + # Convert subject with possible ellipsis to grep pattern + local grep_pattern + grep_pattern=$(convert_to_grep_pattern "$subject") + + # In force mode with no ID matches, use git log --grep directly + if [ ${#matches[@]} -eq 0 ] && [ $force -eq 1 ]; then + # Use git log to search, but filter to ensure subject matches exactly + local match + match=$(git log --format="%H %s" --grep="$grep_pattern" --perl-regexp -10 | \ + while read -r hash subject; do + if echo "$subject" | grep -qP "$grep_pattern"; then + echo "$hash" + break + fi + done) + if [ -n "$match" ]; then + echo "$match" + return 0 + fi + else + # Normal subject matching for existing matches + for match in "${matches[@]}"; do + if git log -1 --format="%s" "$match" | grep -qP "$grep_pattern"; then + echo "$match" + return 0 + fi + done + fi + fi + + # No match found + return 1 +} + +run_selftest() { + local test_cases=( + '00250b5 ("MAINTAINERS: add new Rockchip SoC list")' + '0037727 ("KVM: selftests: Convert xen_shinfo_test away from VCPU_ID")' + 'ffef737 ("net/tls: Fix skb memory leak when running kTLS traffic")' + 'd3d7 ("cifs: Improve guard for excluding $LXDEV xattr")' + 'dbef ("Rename .data.once to .data..once to fix resetting WARN*_ONCE")' + '12345678' # Non-existent commit + '12345 ("I'\''m a dummy commit")' # Valid prefix but wrong subject + '--force 99999999 ("net/tls: Fix skb memory leak when running kTLS traffic")' # Force mode with non-existent ID but valid subject + '83be ("firmware: ... auto-update: fix poll_complete() ... errors")' # Wildcard test + '--force 999999999999 ("firmware: ... auto-update: fix poll_complete() ... errors")' # Force mode wildcard test + ) + + local expected=( + "00250b529313d6262bb0ebbd6bdf0a88c809f6f0" + "0037727b3989c3fe1929c89a9a1dfe289ad86f58" + "ffef737fd0372ca462b5be3e7a592a8929a82752" + "d3d797e326533794c3f707ce1761da7a8895458c" + "dbefa1f31a91670c9e7dac9b559625336206466f" + "" # Expect empty output for non-existent commit + "" # Expect empty output for wrong subject + "ffef737fd0372ca462b5be3e7a592a8929a82752" # Should find commit by subject in force mode + "83beece5aff75879bdfc6df8ba84ea88fd93050e" # Wildcard test + "83beece5aff75879bdfc6df8ba84ea88fd93050e" # Force mode wildcard test + ) + + local expected_exit_codes=( + 0 + 0 + 0 + 0 + 0 + 1 # Expect failure for non-existent commit + 1 # Expect failure for wrong subject + 0 # Should succeed in force mode + 0 # Should succeed with wildcard + 0 # Should succeed with force mode and wildcard + ) + + local failed=0 + + echo "Running self-tests..." + for i in "${!test_cases[@]}"; do + # Capture both output and exit code + local result + result=$(git_resolve_commit ${test_cases[$i]}) # Removed quotes to allow --force to be parsed + local exit_code=$? + + # Check both output and exit code + if [ "$result" != "${expected[$i]}" ] || [ $exit_code != ${expected_exit_codes[$i]} ]; then + echo "Test case $((i+1)) FAILED" + echo "Input: ${test_cases[$i]}" + echo "Expected output: '${expected[$i]}'" + echo "Got output: '$result'" + echo "Expected exit code: ${expected_exit_codes[$i]}" + echo "Got exit code: $exit_code" + failed=1 + else + echo "Test case $((i+1)) PASSED" + fi + done + + if [ $failed -eq 0 ]; then + echo "All tests passed!" + exit 0 + else + echo "Some tests failed!" + exit 1 + fi +} + +# Check for selftest +if [ "$1" = "--selftest" ]; then + run_selftest + exit $? +fi + +# Handle --force flag +force="" +if [ "$1" = "--force" ]; then + force="--force" + shift +fi + +# Verify arguments +if [ $# -eq 0 ]; then + usage +fi + +# Skip validation in force mode +if [ -z "$force" ]; then + # Validate that the first argument matches at least one git commit + if [ "$(git rev-parse --disambiguate="$1" 2>/dev/null | wc -l)" -eq 0 ]; then + echo "Error: '$1' does not match any git commit" + exit 1 + fi +fi + +git_resolve_commit $force "$@" +exit $? -- cgit v1.2.3 From c2c707bd45426df6edc5cf9f5f9fd857bd9926a9 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Wed, 9 Apr 2025 14:23:01 +0200 Subject: apm-emulation: hide an unused variable The driver_version variable is only used inside of an #ifdef block, which leads to a W=1 warning: drivers/char/apm-emulation.c:144:19: error: 'driver_version' defined but not used [-Werror=unused-const-variable=] Move this into the function using it. Fixes: 7726942fb15e ("[APM] Add shared version of APM emulation") Acked-by: Jiri Kosina Signed-off-by: Arnd Bergmann Link: https://lore.kernel.org/r/20250409122314.2848028-9-arnd@kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/char/apm-emulation.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/char/apm-emulation.c b/drivers/char/apm-emulation.c index e795390b070f..53ce352f7197 100644 --- a/drivers/char/apm-emulation.c +++ b/drivers/char/apm-emulation.c @@ -141,9 +141,6 @@ static struct apm_queue kapmd_queue; static DEFINE_MUTEX(state_lock); -static const char driver_version[] = "1.13"; /* no spaces */ - - /* * Compatibility cruft until the IPAQ people move over to the new @@ -435,6 +432,8 @@ static struct miscdevice apm_device = { */ static int proc_apm_show(struct seq_file *m, void *v) { + static const char driver_version[] = "1.13"; /* no spaces */ + struct apm_power_info info; char *units; -- cgit v1.2.3 From a7924f4c489bb6a3f28850f13eaa3e1d2747d0fb Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Wed, 9 Apr 2025 14:23:00 +0200 Subject: comedi: ni_atmio: avoid warning for unused device_ids[] table When the driver is built-in, it produces a W=1 warning: drivers/comedi/drivers/ni_atmio.c:209:35: error: 'device_ids' defined but not used [-Werror=unused-const-variable=] 209 | static const struct pnp_device_id device_ids[] = { The actual probe() function has a different way of identifying the hardware, so just mark this one as __maybe_unused so it can be dropped when built-in. Reviewed-by: Ian Abbott Signed-off-by: Arnd Bergmann Link: https://lore.kernel.org/r/20250409122314.2848028-8-arnd@kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/comedi/drivers/ni_atmio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/comedi/drivers/ni_atmio.c b/drivers/comedi/drivers/ni_atmio.c index 330ae1c58800..b4e759e5703f 100644 --- a/drivers/comedi/drivers/ni_atmio.c +++ b/drivers/comedi/drivers/ni_atmio.c @@ -215,7 +215,7 @@ static const int ni_irqpin[] = { #include "ni_mio_common.c" -static const struct pnp_device_id device_ids[] = { +static const struct pnp_device_id __maybe_unused device_ids[] = { {.id = "NIC1900", .driver_data = 0}, {.id = "NIC2400", .driver_data = 0}, {.id = "NIC2500", .driver_data = 0}, -- cgit v1.2.3 From 0de3748d80f32d71600b95403d5805a6b13df32f Mon Sep 17 00:00:00 2001 From: Tobias Sperling Date: Wed, 12 Mar 2025 16:29:40 +0100 Subject: iio: adc: sort TI drivers alphanumerical Sort TI drivers again in an alphanumerical manner. Signed-off-by: Tobias Sperling Link: https://patch.msgid.link/20250312-sort_ti_drivers-v1-1-4e8813e662d2@softing.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/Kconfig | 114 ++++++++++++++++++++++++------------------------ 1 file changed, 57 insertions(+), 57 deletions(-) diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig index 6529df1a498c..75ed633a3c43 100644 --- a/drivers/iio/adc/Kconfig +++ b/drivers/iio/adc/Kconfig @@ -1440,18 +1440,6 @@ config TI_ADC084S021 This driver can also be built as a module. If so, the module will be called ti-adc084s021. -config TI_ADC12138 - tristate "Texas Instruments ADC12130/ADC12132/ADC12138" - depends on SPI - select IIO_BUFFER - select IIO_TRIGGERED_BUFFER - help - If you say yes here you get support for Texas Instruments ADC12130, - ADC12132 and ADC12138 chips. - - This driver can also be built as a module. If so, the module will be - called ti-adc12138. - config TI_ADC108S102 tristate "Texas Instruments ADC108S102 and ADC128S102 driver" depends on SPI @@ -1464,6 +1452,18 @@ config TI_ADC108S102 To compile this driver as a module, choose M here: the module will be called ti-adc108s102. +config TI_ADC12138 + tristate "Texas Instruments ADC12130/ADC12132/ADC12138" + depends on SPI + select IIO_BUFFER + select IIO_TRIGGERED_BUFFER + help + If you say yes here you get support for Texas Instruments ADC12130, + ADC12132 and ADC12138 chips. + + This driver can also be built as a module. If so, the module will be + called ti-adc12138. + config TI_ADC128S052 tristate "Texas Instruments ADC128S052/ADC122S021/ADC124S021" depends on SPI @@ -1499,6 +1499,16 @@ config TI_ADS1015 This driver can also be built as a module. If so, the module will be called ti-ads1015. +config TI_ADS1100 + tristate "Texas Instruments ADS1100 and ADS1000 ADC" + depends on I2C + help + If you say yes here you get support for Texas Instruments ADS1100 and + ADS1000 ADC chips. + + This driver can also be built as a module. If so, the module will be + called ti-ads1100. + config TI_ADS1119 tristate "Texas Instruments ADS1119 ADC" depends on I2C @@ -1511,6 +1521,41 @@ config TI_ADS1119 This driver can also be built as a module. If so, the module will be called ti-ads1119. +config TI_ADS124S08 + tristate "Texas Instruments ADS124S08" + depends on SPI + select IIO_BUFFER + select IIO_TRIGGERED_BUFFER + help + If you say yes here you get support for Texas Instruments ADS124S08 + and ADS124S06 ADC chips + + This driver can also be built as a module. If so, the module will be + called ti-ads124s08. + +config TI_ADS1298 + tristate "Texas Instruments ADS1298" + depends on SPI + select IIO_BUFFER + help + If you say yes here you get support for Texas Instruments ADS1298 + medical ADC chips + + This driver can also be built as a module. If so, the module will be + called ti-ads1298. + +config TI_ADS131E08 + tristate "Texas Instruments ADS131E08" + depends on SPI + select IIO_BUFFER + select IIO_TRIGGERED_BUFFER + help + Say yes here to get support for Texas Instruments ADS131E04, ADS131E06 + and ADS131E08 chips. + + This driver can also be built as a module. If so, the module will be + called ti-ads131e08. + config TI_ADS7138 tristate "Texas Instruments ADS7128 and ADS7138 ADC driver" depends on I2C @@ -1532,27 +1577,6 @@ config TI_ADS7924 This driver can also be built as a module. If so, the module will be called ti-ads7924. -config TI_ADS1100 - tristate "Texas Instruments ADS1100 and ADS1000 ADC" - depends on I2C - help - If you say yes here you get support for Texas Instruments ADS1100 and - ADS1000 ADC chips. - - This driver can also be built as a module. If so, the module will be - called ti-ads1100. - -config TI_ADS1298 - tristate "Texas Instruments ADS1298" - depends on SPI - select IIO_BUFFER - help - If you say yes here you get support for Texas Instruments ADS1298 - medical ADC chips - - This driver can also be built as a module. If so, the module will be - called ti-ads1298. - config TI_ADS7950 tristate "Texas Instruments ADS7950 ADC driver" depends on SPI && GPIOLIB @@ -1588,30 +1612,6 @@ config TI_ADS8688 This driver can also be built as a module. If so, the module will be called ti-ads8688. -config TI_ADS124S08 - tristate "Texas Instruments ADS124S08" - depends on SPI - select IIO_BUFFER - select IIO_TRIGGERED_BUFFER - help - If you say yes here you get support for Texas Instruments ADS124S08 - and ADS124S06 ADC chips - - This driver can also be built as a module. If so, the module will be - called ti-ads124s08. - -config TI_ADS131E08 - tristate "Texas Instruments ADS131E08" - depends on SPI - select IIO_BUFFER - select IIO_TRIGGERED_BUFFER - help - Say yes here to get support for Texas Instruments ADS131E04, ADS131E06 - and ADS131E08 chips. - - This driver can also be built as a module. If so, the module will be - called ti-ads131e08. - config TI_AM335X_ADC tristate "TI's AM335X ADC driver" depends on MFD_TI_AM335X_TSCADC && HAS_DMA -- cgit v1.2.3 From f184a095c8559f0df8dc36d8c88df0ca2c687bce Mon Sep 17 00:00:00 2001 From: Lothar Rubusch Date: Thu, 13 Mar 2025 16:50:36 +0000 Subject: iio: accel: adxl345: use regmap cache for INT mapping Use regmap cache to replace the maintenance of the interrupt mapping state by a member variable intio. The interrupt mapping is initialized when the driver is probed, and it is perfectly cacheable. The patch will still leave the function set_interrupts(). A follow up patch takes care of it, when cleaning up the INT enable register variable. Signed-off-by: Lothar Rubusch Link: https://patch.msgid.link/20250313165049.48305-2-l.rubusch@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/accel/adxl345.h | 4 +++ drivers/iio/accel/adxl345_core.c | 64 +++++++++++++++++++++++++--------------- drivers/iio/accel/adxl345_i2c.c | 2 ++ drivers/iio/accel/adxl345_spi.c | 2 ++ 4 files changed, 49 insertions(+), 23 deletions(-) diff --git a/drivers/iio/accel/adxl345.h b/drivers/iio/accel/adxl345.h index bc6d634bd85c..7d482dd595fa 100644 --- a/drivers/iio/accel/adxl345.h +++ b/drivers/iio/accel/adxl345.h @@ -111,6 +111,10 @@ */ #define ADXL375_USCALE 480000 +struct regmap; + +bool adxl345_is_volatile_reg(struct device *dev, unsigned int reg); + struct adxl345_chip_info { const char *name; int uscale; diff --git a/drivers/iio/accel/adxl345_core.c b/drivers/iio/accel/adxl345_core.c index 375c27d16827..6e0113bd36c3 100644 --- a/drivers/iio/accel/adxl345_core.c +++ b/drivers/iio/accel/adxl345_core.c @@ -36,7 +36,6 @@ struct adxl345_state { struct regmap *regmap; bool fifo_delay; /* delay: delay is needed for SPI */ int irq; - u8 intio; u8 int_map; u8 watermark; u8 fifo_mode; @@ -76,6 +75,25 @@ static const unsigned long adxl345_scan_masks[] = { 0 }; +bool adxl345_is_volatile_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case ADXL345_REG_DATA_AXIS(0): + case ADXL345_REG_DATA_AXIS(1): + case ADXL345_REG_DATA_AXIS(2): + case ADXL345_REG_DATA_AXIS(3): + case ADXL345_REG_DATA_AXIS(4): + case ADXL345_REG_DATA_AXIS(5): + case ADXL345_REG_ACT_TAP_STATUS: + case ADXL345_REG_FIFO_STATUS: + case ADXL345_REG_INT_SOURCE: + return true; + default: + return false; + } +} +EXPORT_SYMBOL_NS_GPL(adxl345_is_volatile_reg, "IIO_ADXL345"); + /** * adxl345_set_measure_en() - Enable and disable measuring. * @@ -98,22 +116,7 @@ static int adxl345_set_measure_en(struct adxl345_state *st, bool en) static int adxl345_set_interrupts(struct adxl345_state *st) { - int ret; - unsigned int int_enable = st->int_map; - unsigned int int_map; - - /* - * Any bits set to 0 in the INT map register send their respective - * interrupts to the INT1 pin, whereas bits set to 1 send their respective - * interrupts to the INT2 pin. The intio shall convert this accordingly. - */ - int_map = st->intio ? st->int_map : ~st->int_map; - - ret = regmap_write(st->regmap, ADXL345_REG_INT_MAP, int_map); - if (ret) - return ret; - - return regmap_write(st->regmap, ADXL345_REG_INT_ENABLE, int_enable); + return regmap_write(st->regmap, ADXL345_REG_INT_ENABLE, st->int_map); } static int adxl345_read_raw(struct iio_dev *indio_dev, @@ -265,6 +268,7 @@ static const struct attribute_group adxl345_attrs_group = { static int adxl345_set_fifo(struct adxl345_state *st) { + unsigned int intio; int ret; /* FIFO should only be configured while in standby mode */ @@ -272,11 +276,14 @@ static int adxl345_set_fifo(struct adxl345_state *st) if (ret < 0) return ret; + ret = regmap_read(st->regmap, ADXL345_REG_INT_MAP, &intio); + if (ret) + return ret; + ret = regmap_write(st->regmap, ADXL345_REG_FIFO_CTL, FIELD_PREP(ADXL345_FIFO_CTL_SAMPLES_MSK, st->watermark) | - FIELD_PREP(ADXL345_FIFO_CTL_TRIGGER_MSK, - st->intio) | + FIELD_PREP(ADXL345_FIFO_CTL_TRIGGER_MSK, intio) | FIELD_PREP(ADXL345_FIFO_CTL_MODE_MSK, st->fifo_mode)); if (ret < 0) @@ -492,6 +499,7 @@ int adxl345_core_probe(struct device *dev, struct regmap *regmap, struct adxl345_state *st; struct iio_dev *indio_dev; u32 regval; + u8 intio = ADXL345_INT1; unsigned int data_format_mask = (ADXL345_DATA_FORMAT_RANGE | ADXL345_DATA_FORMAT_JUSTIFY | ADXL345_DATA_FORMAT_FULL_RES | @@ -556,16 +564,26 @@ int adxl345_core_probe(struct device *dev, struct regmap *regmap, if (ret < 0) return ret; - st->intio = ADXL345_INT1; st->irq = fwnode_irq_get_byname(dev_fwnode(dev), "INT1"); if (st->irq < 0) { - st->intio = ADXL345_INT2; + intio = ADXL345_INT2; st->irq = fwnode_irq_get_byname(dev_fwnode(dev), "INT2"); if (st->irq < 0) - st->intio = ADXL345_INT_NONE; + intio = ADXL345_INT_NONE; } - if (st->intio != ADXL345_INT_NONE) { + if (intio != ADXL345_INT_NONE) { + /* + * Any bits set to 0 in the INT map register send their respective + * interrupts to the INT1 pin, whereas bits set to 1 send their respective + * interrupts to the INT2 pin. The intio shall convert this accordingly. + */ + regval = intio ? 0xff : 0; + + ret = regmap_write(st->regmap, ADXL345_REG_INT_MAP, regval); + if (ret) + return ret; + /* FIFO_STREAM mode is going to be activated later */ ret = devm_iio_kfifo_buffer_setup(dev, indio_dev, &adxl345_buffer_ops); if (ret) diff --git a/drivers/iio/accel/adxl345_i2c.c b/drivers/iio/accel/adxl345_i2c.c index 8c385dd6c01d..af84c0043c6c 100644 --- a/drivers/iio/accel/adxl345_i2c.c +++ b/drivers/iio/accel/adxl345_i2c.c @@ -17,6 +17,8 @@ static const struct regmap_config adxl345_i2c_regmap_config = { .reg_bits = 8, .val_bits = 8, + .volatile_reg = adxl345_is_volatile_reg, + .cache_type = REGCACHE_MAPLE, }; static int adxl345_i2c_probe(struct i2c_client *client) diff --git a/drivers/iio/accel/adxl345_spi.c b/drivers/iio/accel/adxl345_spi.c index 7e518aea17bf..0315f4bfd69a 100644 --- a/drivers/iio/accel/adxl345_spi.c +++ b/drivers/iio/accel/adxl345_spi.c @@ -19,6 +19,8 @@ static const struct regmap_config adxl345_spi_regmap_config = { .val_bits = 8, /* Setting bits 7 and 6 enables multiple-byte read */ .read_flag_mask = BIT(7) | BIT(6), + .volatile_reg = adxl345_is_volatile_reg, + .cache_type = REGCACHE_MAPLE, }; static int adxl345_spi_setup(struct device *dev, struct regmap *regmap) -- cgit v1.2.3 From 77d48f5e4a603efc22785a03800fd2a127b51be4 Mon Sep 17 00:00:00 2001 From: Lothar Rubusch Date: Thu, 13 Mar 2025 16:50:37 +0000 Subject: iio: accel: adxl345: move INT enable to regmap cache Replace the interrupt enable member variable to the regmap cache. This makes the function set_interrupts() obsolete. The interrupt enable register is written when the driver is probed. Thus it is perfectly cacheable. Signed-off-by: Lothar Rubusch Link: https://patch.msgid.link/20250313165049.48305-3-l.rubusch@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/accel/adxl345_core.c | 26 +++++++++----------------- 1 file changed, 9 insertions(+), 17 deletions(-) diff --git a/drivers/iio/accel/adxl345_core.c b/drivers/iio/accel/adxl345_core.c index 6e0113bd36c3..f6bf8545dcf5 100644 --- a/drivers/iio/accel/adxl345_core.c +++ b/drivers/iio/accel/adxl345_core.c @@ -36,7 +36,6 @@ struct adxl345_state { struct regmap *regmap; bool fifo_delay; /* delay: delay is needed for SPI */ int irq; - u8 int_map; u8 watermark; u8 fifo_mode; __le16 fifo_buf[ADXL345_DIRS * ADXL345_FIFO_SIZE + 1] __aligned(IIO_DMA_MINALIGN); @@ -114,11 +113,6 @@ static int adxl345_set_measure_en(struct adxl345_state *st, bool en) return regmap_write(st->regmap, ADXL345_REG_POWER_CTL, val); } -static int adxl345_set_interrupts(struct adxl345_state *st) -{ - return regmap_write(st->regmap, ADXL345_REG_INT_ENABLE, st->int_map); -} - static int adxl345_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long mask) @@ -217,7 +211,7 @@ static int adxl345_reg_access(struct iio_dev *indio_dev, unsigned int reg, static int adxl345_set_watermark(struct iio_dev *indio_dev, unsigned int value) { struct adxl345_state *st = iio_priv(indio_dev); - unsigned int fifo_mask = 0x1F; + const unsigned int fifo_mask = 0x1F, watermark_mask = 0x02; int ret; value = min(value, ADXL345_FIFO_SIZE - 1); @@ -227,9 +221,8 @@ static int adxl345_set_watermark(struct iio_dev *indio_dev, unsigned int value) return ret; st->watermark = value; - st->int_map |= ADXL345_INT_WATERMARK; - - return 0; + return regmap_update_bits(st->regmap, ADXL345_REG_INT_ENABLE, + watermark_mask, ADXL345_INT_WATERMARK); } static int adxl345_write_raw_get_fmt(struct iio_dev *indio_dev, @@ -381,11 +374,6 @@ static void adxl345_fifo_reset(struct adxl345_state *st) static int adxl345_buffer_postenable(struct iio_dev *indio_dev) { struct adxl345_state *st = iio_priv(indio_dev); - int ret; - - ret = adxl345_set_interrupts(st); - if (ret < 0) - return ret; st->fifo_mode = ADXL345_FIFO_STREAM; return adxl345_set_fifo(st); @@ -401,8 +389,7 @@ static int adxl345_buffer_predisable(struct iio_dev *indio_dev) if (ret < 0) return ret; - st->int_map = 0x00; - return adxl345_set_interrupts(st); + return regmap_write(st->regmap, ADXL345_REG_INT_ENABLE, 0x00); } static const struct iio_buffer_setup_ops adxl345_buffer_ops = { @@ -524,6 +511,11 @@ int adxl345_core_probe(struct device *dev, struct regmap *regmap, indio_dev->num_channels = ARRAY_SIZE(adxl345_channels); indio_dev->available_scan_masks = adxl345_scan_masks; + /* Reset interrupts at start up */ + ret = regmap_write(st->regmap, ADXL345_REG_INT_ENABLE, 0x00); + if (ret) + return ret; + if (setup) { /* Perform optional initial bus specific configuration */ ret = setup(dev, st->regmap); -- cgit v1.2.3 From 802ede1a9b5a78ffe438fb12765b8ec5efbed923 Mon Sep 17 00:00:00 2001 From: Lothar Rubusch Date: Thu, 13 Mar 2025 16:50:38 +0000 Subject: iio: accel: adxl345: cleanup regmap return values Regmap return values sometimes are checked being less than zero to trigger error handling. Sometimes this is checked for being not zero. Unify the situation and check for not being zero. Signed-off-by: Lothar Rubusch Link: https://patch.msgid.link/20250313165049.48305-4-l.rubusch@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/accel/adxl345_core.c | 24 ++++++++++++------------ 1 file changed, 12 insertions(+), 12 deletions(-) diff --git a/drivers/iio/accel/adxl345_core.c b/drivers/iio/accel/adxl345_core.c index f6bf8545dcf5..d31c5a024487 100644 --- a/drivers/iio/accel/adxl345_core.c +++ b/drivers/iio/accel/adxl345_core.c @@ -133,7 +133,7 @@ static int adxl345_read_raw(struct iio_dev *indio_dev, ret = regmap_bulk_read(st->regmap, ADXL345_REG_DATA_AXIS(chan->address), &accel, sizeof(accel)); - if (ret < 0) + if (ret) return ret; *val = sign_extend32(le16_to_cpu(accel), 12); @@ -145,7 +145,7 @@ static int adxl345_read_raw(struct iio_dev *indio_dev, case IIO_CHAN_INFO_CALIBBIAS: ret = regmap_read(st->regmap, ADXL345_REG_OFS_AXIS(chan->address), ®val); - if (ret < 0) + if (ret) return ret; /* * 8-bit resolution at +/- 2g, that is 4x accel data scale @@ -156,7 +156,7 @@ static int adxl345_read_raw(struct iio_dev *indio_dev, return IIO_VAL_INT; case IIO_CHAN_INFO_SAMP_FREQ: ret = regmap_read(st->regmap, ADXL345_REG_BW_RATE, ®val); - if (ret < 0) + if (ret) return ret; samp_freq_nhz = ADXL345_BASE_RATE_NANO_HZ << @@ -266,7 +266,7 @@ static int adxl345_set_fifo(struct adxl345_state *st) /* FIFO should only be configured while in standby mode */ ret = adxl345_set_measure_en(st, false); - if (ret < 0) + if (ret) return ret; ret = regmap_read(st->regmap, ADXL345_REG_INT_MAP, &intio); @@ -279,7 +279,7 @@ static int adxl345_set_fifo(struct adxl345_state *st) FIELD_PREP(ADXL345_FIFO_CTL_TRIGGER_MSK, intio) | FIELD_PREP(ADXL345_FIFO_CTL_MODE_MSK, st->fifo_mode)); - if (ret < 0) + if (ret) return ret; return adxl345_set_measure_en(st, true); @@ -300,7 +300,7 @@ static int adxl345_get_samples(struct adxl345_state *st) int ret; ret = regmap_read(st->regmap, ADXL345_REG_FIFO_STATUS, ®val); - if (ret < 0) + if (ret) return ret; return FIELD_GET(ADXL345_REG_FIFO_STATUS_MSK, regval); @@ -328,7 +328,7 @@ static int adxl345_fifo_transfer(struct adxl345_state *st, int samples) /* read 3x 2 byte elements from base address into next fifo_buf position */ ret = regmap_bulk_read(st->regmap, ADXL345_REG_XYZ_BASE, st->fifo_buf + (i * count / 2), count); - if (ret < 0) + if (ret) return ret; /* @@ -386,7 +386,7 @@ static int adxl345_buffer_predisable(struct iio_dev *indio_dev) st->fifo_mode = ADXL345_FIFO_BYPASS; ret = adxl345_set_fifo(st); - if (ret < 0) + if (ret) return ret; return regmap_write(st->regmap, ADXL345_REG_INT_ENABLE, 0x00); @@ -540,7 +540,7 @@ int adxl345_core_probe(struct device *dev, struct regmap *regmap, } ret = regmap_read(st->regmap, ADXL345_REG_DEVID, ®val); - if (ret < 0) + if (ret) return dev_err_probe(dev, ret, "Error reading device ID\n"); if (regval != ADXL345_DEVID) @@ -549,11 +549,11 @@ int adxl345_core_probe(struct device *dev, struct regmap *regmap, /* Enable measurement mode */ ret = adxl345_set_measure_en(st, true); - if (ret < 0) + if (ret) return dev_err_probe(dev, ret, "Failed to enable measurement mode\n"); ret = devm_add_action_or_reset(dev, adxl345_powerdown, st); - if (ret < 0) + if (ret) return ret; st->irq = fwnode_irq_get_byname(dev_fwnode(dev), "INT1"); @@ -591,7 +591,7 @@ int adxl345_core_probe(struct device *dev, struct regmap *regmap, ret = regmap_write(st->regmap, ADXL345_REG_FIFO_CTL, FIELD_PREP(ADXL345_FIFO_CTL_MODE_MSK, ADXL345_FIFO_BYPASS)); - if (ret < 0) + if (ret) return ret; } -- cgit v1.2.3 From ad02ca57e44e9936fca5095840fad9d4b47c5559 Mon Sep 17 00:00:00 2001 From: Zhang Lixu Date: Mon, 17 Mar 2025 09:36:34 +0800 Subject: iio: hid-sensor-prox: Add support for 16-bit report size On Intel platforms, the HID_USAGE_SENSOR_HUMAN_PROXIMITY report size is 16 bits. This patch adds support for handling 16-bit report sizes for the HID_USAGE_SENSOR_HUMAN_PROXIMITY usage in the HID sensor proximity driver. Previously, the driver only supported 8-bit and 32-bit report sizes. With this change, the driver can now correctly process 16-bit proximity data, ensuring accurate human presence detection on platforms where this report size is used. Signed-off-by: Zhang Lixu Acked-by: Srinivas Pandruvada Link: https://patch.msgid.link/20250317013634.4117399-1-lixu.zhang@intel.com Signed-off-by: Jonathan Cameron --- drivers/iio/light/hid-sensor-prox.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/iio/light/hid-sensor-prox.c b/drivers/iio/light/hid-sensor-prox.c index 76b76d12b388..3a7b48803d50 100644 --- a/drivers/iio/light/hid-sensor-prox.c +++ b/drivers/iio/light/hid-sensor-prox.c @@ -213,6 +213,9 @@ static int prox_capture_sample(struct hid_sensor_hub_device *hsdev, case 1: prox_state->human_presence[chan] = *(u8 *)raw_data * multiplier; return 0; + case 2: + prox_state->human_presence[chan] = *(u16 *)raw_data * multiplier; + return 0; case 4: prox_state->human_presence[chan] = *(u32 *)raw_data * multiplier; return 0; -- cgit v1.2.3 From 0b2a4f55cc422b6c6b22a5a1b7de63ebe96f2f76 Mon Sep 17 00:00:00 2001 From: Siddharth Menon Date: Sat, 22 Mar 2025 21:58:11 +0530 Subject: iio: frequency: ad9832: devicetree probing support Introduce struct for device match of_device_id to avoid relying on fallback mechanisms, which could lead to false matches against other AD9832 variants in the future. Suggested-by: Marcelo Schmitt Reviewed-by: Marcelo Schmitt Signed-off-by: Siddharth Menon Link: https://patch.msgid.link/20250322163211.253009-1-simeddon@gmail.com Signed-off-by: Jonathan Cameron --- drivers/staging/iio/frequency/ad9832.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/staging/iio/frequency/ad9832.c b/drivers/staging/iio/frequency/ad9832.c index db42810c7664..1bf23384d28b 100644 --- a/drivers/staging/iio/frequency/ad9832.c +++ b/drivers/staging/iio/frequency/ad9832.c @@ -402,6 +402,13 @@ static int ad9832_probe(struct spi_device *spi) return devm_iio_device_register(&spi->dev, indio_dev); } +static const struct of_device_id ad9832_of_match[] = { + { .compatible = "adi,ad9832" }, + { .compatible = "adi,ad9835" }, + { } +}; +MODULE_DEVICE_TABLE(of, ad9832_of_match); + static const struct spi_device_id ad9832_id[] = { {"ad9832", 0}, {"ad9835", 0}, @@ -412,6 +419,7 @@ MODULE_DEVICE_TABLE(spi, ad9832_id); static struct spi_driver ad9832_driver = { .driver = { .name = "ad9832", + .of_match_table = ad9832_of_match, }, .probe = ad9832_probe, .id_table = ad9832_id, -- cgit v1.2.3 From bb8d952a4f45ff6427ad0eaaf469893d481f84e2 Mon Sep 17 00:00:00 2001 From: Feng Wei Date: Thu, 27 Mar 2025 09:57:04 +0800 Subject: staging: iio: adt7316: replace irqd_get_trigger_type with irq_get_trigger_type Convert irqd_get_trigger_type(irq_get_irq_data(irq)) cases to the more simple irq_get_trigger_type(irq). Signed-off-by: Feng Wei Signed-off-by: Shao Mingyin Link: https://patch.msgid.link/202503270957044481PK0Xb23i08BgwkodLtEC@zte.com.cn Signed-off-by: Jonathan Cameron --- drivers/staging/iio/addac/adt7316.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/iio/addac/adt7316.c b/drivers/staging/iio/addac/adt7316.c index f4260786d50a..16f30c4f1aa0 100644 --- a/drivers/staging/iio/addac/adt7316.c +++ b/drivers/staging/iio/addac/adt7316.c @@ -1794,7 +1794,7 @@ static int adt7316_setup_irq(struct iio_dev *indio_dev) struct adt7316_chip_info *chip = iio_priv(indio_dev); int irq_type, ret; - irq_type = irqd_get_trigger_type(irq_get_irq_data(chip->bus.irq)); + irq_type = irq_get_trigger_type(chip->bus.irq); switch (irq_type) { case IRQF_TRIGGER_HIGH: -- cgit v1.2.3 From 9ca04c5e01a627043a1115c5458487060aebfb9c Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Mon, 24 Mar 2025 13:53:12 +0100 Subject: dt-bindings: iio: Correct indentation and style in DTS example DTS example in the bindings should be indented with 2- or 4-spaces and aligned with opening '- |', so correct any differences like 3-spaces or mixtures 2- and 4-spaces in one binding. No functional changes here, but saves some comments during reviews of new patches built on existing code. Signed-off-by: Krzysztof Kozlowski Link: https://patch.msgid.link/20250324125313.82226-1-krzysztof.kozlowski@linaro.org Signed-off-by: Jonathan Cameron --- .../devicetree/bindings/iio/adc/st,stm32-adc.yaml | 102 ++++++++++----------- 1 file changed, 51 insertions(+), 51 deletions(-) diff --git a/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.yaml b/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.yaml index ef9dcc365eab..17bb60e18a1c 100644 --- a/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.yaml +++ b/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.yaml @@ -498,7 +498,7 @@ patternProperties: examples: - | // Example 1: with stm32f429, ADC1, single-ended channel 8 - adc123: adc@40012000 { + adc123: adc@40012000 { compatible = "st,stm32f4-adc-core"; reg = <0x40012000 0x400>; interrupts = <18>; @@ -512,28 +512,28 @@ examples: #address-cells = <1>; #size-cells = <0>; adc@0 { - compatible = "st,stm32f4-adc"; - #io-channel-cells = <1>; - reg = <0x0>; - clocks = <&rcc 0 168>; - interrupt-parent = <&adc123>; - interrupts = <0>; - st,adc-channels = <8>; - dmas = <&dma2 0 0 0x400 0x0>; - dma-names = "rx"; - assigned-resolution-bits = <8>; + compatible = "st,stm32f4-adc"; + #io-channel-cells = <1>; + reg = <0x0>; + clocks = <&rcc 0 168>; + interrupt-parent = <&adc123>; + interrupts = <0>; + st,adc-channels = <8>; + dmas = <&dma2 0 0 0x400 0x0>; + dma-names = "rx"; + assigned-resolution-bits = <8>; }; // ... // other adc child nodes follow... - }; + }; - | // Example 2: with stm32mp157c to setup ADC1 with: // - channels 0 & 1 as single-ended // - channels 2 & 3 as differential (with resp. 6 & 7 negative inputs) - #include - #include - adc12: adc@48003000 { + #include + #include + adc12: adc@48003000 { compatible = "st,stm32mp1-adc-core"; reg = <0x48003000 0x400>; interrupts = , @@ -550,27 +550,27 @@ examples: #address-cells = <1>; #size-cells = <0>; adc@0 { - compatible = "st,stm32mp1-adc"; - #io-channel-cells = <1>; - reg = <0x0>; - interrupt-parent = <&adc12>; - interrupts = <0>; - st,adc-channels = <0 1>; - st,adc-diff-channels = <2 6>, <3 7>; - st,min-sample-time-nsecs = <5000>; - dmas = <&dmamux1 9 0x400 0x05>; - dma-names = "rx"; + compatible = "st,stm32mp1-adc"; + #io-channel-cells = <1>; + reg = <0x0>; + interrupt-parent = <&adc12>; + interrupts = <0>; + st,adc-channels = <0 1>; + st,adc-diff-channels = <2 6>, <3 7>; + st,min-sample-time-nsecs = <5000>; + dmas = <&dmamux1 9 0x400 0x05>; + dma-names = "rx"; }; // ... // other adc child node follow... - }; + }; - | // Example 3: with stm32mp157c to setup ADC2 with: // - internal channels 13, 14, 15. - #include - #include - adc122: adc@48003000 { + #include + #include + adc122: adc@48003000 { compatible = "st,stm32mp1-adc-core"; reg = <0x48003000 0x400>; interrupts = , @@ -587,28 +587,28 @@ examples: #address-cells = <1>; #size-cells = <0>; adc@100 { - compatible = "st,stm32mp1-adc"; - #io-channel-cells = <1>; - reg = <0x100>; - interrupts = <1>; - #address-cells = <1>; - #size-cells = <0>; - channel@13 { - reg = <13>; - label = "vrefint"; - st,min-sample-time-ns = <9000>; - }; - channel@14 { - reg = <14>; - label = "vddcore"; - st,min-sample-time-ns = <9000>; - }; - channel@15 { - reg = <15>; - label = "vbat"; - st,min-sample-time-ns = <9000>; - }; + compatible = "st,stm32mp1-adc"; + #io-channel-cells = <1>; + reg = <0x100>; + interrupts = <1>; + #address-cells = <1>; + #size-cells = <0>; + channel@13 { + reg = <13>; + label = "vrefint"; + st,min-sample-time-ns = <9000>; + }; + channel@14 { + reg = <14>; + label = "vddcore"; + st,min-sample-time-ns = <9000>; + }; + channel@15 { + reg = <15>; + label = "vbat"; + st,min-sample-time-ns = <9000>; + }; }; - }; + }; ... -- cgit v1.2.3 From 58fe539e9170320a611d7086346317f1e3586878 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Mon, 24 Mar 2025 13:53:13 +0100 Subject: dt-bindings: iio: Use unevaluatedProperties for SPI devices SPI devices should use unevaluatedProperties:false instead of additionalProperties:false, to allow any SPI device properties listed in spi-peripheral-props.yaml. Signed-off-by: Krzysztof Kozlowski Reviewed-by: Rob Herring (Arm) Reviewed-by: Matti Vaittinen Link: https://patch.msgid.link/20250324125313.82226-2-krzysztof.kozlowski@linaro.org Signed-off-by: Jonathan Cameron --- Documentation/devicetree/bindings/iio/dac/adi,ad3552r.yaml | 2 +- Documentation/devicetree/bindings/iio/dac/adi,ltc2664.yaml | 2 +- Documentation/devicetree/bindings/iio/dac/adi,ltc2672.yaml | 2 +- Documentation/devicetree/bindings/iio/dac/microchip,mcp4821.yaml | 2 +- Documentation/devicetree/bindings/iio/dac/rohm,bd79703.yaml | 2 +- Documentation/devicetree/bindings/iio/imu/adi,adis16550.yaml | 2 +- Documentation/devicetree/bindings/iio/pressure/honeywell,hsc030pa.yaml | 2 +- .../devicetree/bindings/iio/pressure/honeywell,mprls0025pa.yaml | 2 +- 8 files changed, 8 insertions(+), 8 deletions(-) diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad3552r.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad3552r.yaml index 2d2561a52683..547044b8e246 100644 --- a/Documentation/devicetree/bindings/iio/dac/adi,ad3552r.yaml +++ b/Documentation/devicetree/bindings/iio/dac/adi,ad3552r.yaml @@ -217,7 +217,7 @@ required: - reg - spi-max-frequency -additionalProperties: false +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ltc2664.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ltc2664.yaml index 33490853497b..1aece3392b77 100644 --- a/Documentation/devicetree/bindings/iio/dac/adi,ltc2664.yaml +++ b/Documentation/devicetree/bindings/iio/dac/adi,ltc2664.yaml @@ -144,7 +144,7 @@ required: allOf: - $ref: /schemas/spi/spi-peripheral-props.yaml# -additionalProperties: false +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ltc2672.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ltc2672.yaml index c8c434c10643..3c8e5781e42c 100644 --- a/Documentation/devicetree/bindings/iio/dac/adi,ltc2672.yaml +++ b/Documentation/devicetree/bindings/iio/dac/adi,ltc2672.yaml @@ -124,7 +124,7 @@ required: allOf: - $ref: /schemas/spi/spi-peripheral-props.yaml# -additionalProperties: false +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/dac/microchip,mcp4821.yaml b/Documentation/devicetree/bindings/iio/dac/microchip,mcp4821.yaml index 0dc577c33918..26011b5639d8 100644 --- a/Documentation/devicetree/bindings/iio/dac/microchip,mcp4821.yaml +++ b/Documentation/devicetree/bindings/iio/dac/microchip,mcp4821.yaml @@ -64,7 +64,7 @@ required: - reg - vdd-supply -additionalProperties: false +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/dac/rohm,bd79703.yaml b/Documentation/devicetree/bindings/iio/dac/rohm,bd79703.yaml index 941a49c93943..188b00333dfb 100644 --- a/Documentation/devicetree/bindings/iio/dac/rohm,bd79703.yaml +++ b/Documentation/devicetree/bindings/iio/dac/rohm,bd79703.yaml @@ -43,7 +43,7 @@ required: allOf: - $ref: /schemas/spi/spi-peripheral-props.yaml# -additionalProperties: false +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/imu/adi,adis16550.yaml b/Documentation/devicetree/bindings/iio/imu/adi,adis16550.yaml index a4c273c7a67f..cf5324de4fd6 100644 --- a/Documentation/devicetree/bindings/iio/imu/adi,adis16550.yaml +++ b/Documentation/devicetree/bindings/iio/imu/adi,adis16550.yaml @@ -53,7 +53,7 @@ required: allOf: - $ref: /schemas/spi/spi-peripheral-props.yaml# -additionalProperties: false +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/iio/pressure/honeywell,hsc030pa.yaml b/Documentation/devicetree/bindings/iio/pressure/honeywell,hsc030pa.yaml index 89977b9f01cf..412c7bcc310f 100644 --- a/Documentation/devicetree/bindings/iio/pressure/honeywell,hsc030pa.yaml +++ b/Documentation/devicetree/bindings/iio/pressure/honeywell,hsc030pa.yaml @@ -102,7 +102,7 @@ required: allOf: - $ref: /schemas/spi/spi-peripheral-props.yaml -additionalProperties: false +unevaluatedProperties: false dependentSchemas: honeywell,pmin-pascal: diff --git a/Documentation/devicetree/bindings/iio/pressure/honeywell,mprls0025pa.yaml b/Documentation/devicetree/bindings/iio/pressure/honeywell,mprls0025pa.yaml index 6994b30015bd..c756aa863103 100644 --- a/Documentation/devicetree/bindings/iio/pressure/honeywell,mprls0025pa.yaml +++ b/Documentation/devicetree/bindings/iio/pressure/honeywell,mprls0025pa.yaml @@ -115,7 +115,7 @@ allOf: honeywell,pmin-pascal: false honeywell,pmax-pascal: false -additionalProperties: false +unevaluatedProperties: false examples: - | -- cgit v1.2.3 From 3e09eb53df47127cdcbf26fc41d24cd564d5d57c Mon Sep 17 00:00:00 2001 From: Sergio Perez Date: Mon, 24 Mar 2025 14:59:19 +0100 Subject: dt-bindings: iio: light: bh1750: Add reset-gpios property Some BH1750 sensors require a hardware reset via GPIO before they can be properly detected on the I2C bus. Add a new reset-gpios property to the binding to support this functionality. The reset-gpios property allows specifying a GPIO that will be toggled during driver initialization to reset the sensor. Signed-off-by: Sergio Perez Reviewed-by: Krzysztof Kozlowski Link: https://patch.msgid.link/20250324135920.6802-1-sergio@pereznus.es Signed-off-by: Jonathan Cameron --- Documentation/devicetree/bindings/iio/light/bh1750.yaml | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/Documentation/devicetree/bindings/iio/light/bh1750.yaml b/Documentation/devicetree/bindings/iio/light/bh1750.yaml index 1a88b3c253d5..9df81c271411 100644 --- a/Documentation/devicetree/bindings/iio/light/bh1750.yaml +++ b/Documentation/devicetree/bindings/iio/light/bh1750.yaml @@ -24,6 +24,10 @@ properties: reg: maxItems: 1 + reset-gpios: + description: GPIO connected to the DVI reset pin (active low) + maxItems: 1 + required: - compatible - reg @@ -32,6 +36,7 @@ additionalProperties: false examples: - | + #include i2c { #address-cells = <1>; #size-cells = <0>; @@ -39,6 +44,7 @@ examples: light-sensor@23 { compatible = "rohm,bh1750"; reg = <0x23>; + reset-gpios = <&gpio2 17 GPIO_ACTIVE_LOW>; }; }; -- cgit v1.2.3 From 61f013df59f1d6326dcb6e1017171d7ee2b5a410 Mon Sep 17 00:00:00 2001 From: Sergio Perez Date: Mon, 24 Mar 2025 14:59:20 +0100 Subject: iio: light: bh1750: Add hardware reset support via GPIO Some BH1750 sensors require a hardware reset before they can be detected on the I2C bus. This implementation adds support for an optional reset GPIO that can be specified in the device tree. The reset sequence pulls the GPIO low and then high before initializing the sensor, which enables proper detection with tools like i2cdetect. This is particularly important for sensors that power on in an undefined state. Signed-off-by: Sergio Perez Link: https://patch.msgid.link/20250324135920.6802-2-sergio@pereznus.es Signed-off-by: Jonathan Cameron --- drivers/iio/light/bh1750.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/iio/light/bh1750.c b/drivers/iio/light/bh1750.c index 4b869fa9e5b1..764f88826fcb 100644 --- a/drivers/iio/light/bh1750.c +++ b/drivers/iio/light/bh1750.c @@ -22,12 +22,16 @@ #include #include #include +#include #define BH1750_POWER_DOWN 0x00 #define BH1750_ONE_TIME_H_RES_MODE 0x20 /* auto-mode for BH1721 */ #define BH1750_CHANGE_INT_TIME_H_BIT 0x40 #define BH1750_CHANGE_INT_TIME_L_BIT 0x60 +/* Define the reset delay time in microseconds */ +#define BH1750_RESET_DELAY_US 10000 /* 10ms */ + enum { BH1710, BH1721, @@ -40,6 +44,7 @@ struct bh1750_data { struct mutex lock; const struct bh1750_chip_info *chip_info; u16 mtreg; + struct gpio_desc *reset_gpio; }; struct bh1750_chip_info { @@ -248,6 +253,25 @@ static int bh1750_probe(struct i2c_client *client) data->client = client; data->chip_info = &bh1750_chip_info_tbl[id->driver_data]; + /* Get reset GPIO from device tree */ + data->reset_gpio = devm_gpiod_get_optional(&client->dev, + "reset", GPIOD_OUT_HIGH); + + if (IS_ERR(data->reset_gpio)) + return dev_err_probe(&client->dev, PTR_ERR(data->reset_gpio), + "Failed to get reset GPIO\n"); + + /* Perform hardware reset if GPIO is provided */ + if (data->reset_gpio) { + /* Perform reset sequence: low-high */ + gpiod_set_value_cansleep(data->reset_gpio, 1); + fsleep(BH1750_RESET_DELAY_US); + gpiod_set_value_cansleep(data->reset_gpio, 0); + fsleep(BH1750_RESET_DELAY_US); + + dev_dbg(&client->dev, "BH1750 reset completed via GPIO\n"); + } + usec = data->chip_info->mtreg_to_usec * data->chip_info->mtreg_default; ret = bh1750_change_int_time(data, usec); if (ret < 0) -- cgit v1.2.3 From b2729cdf2bc0ea9d624d504fc61e5b6299629b6c Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Sun, 30 Mar 2025 12:19:21 +0200 Subject: dt-bindings: iio: adc: amlogic,meson-saradc: Add GXLX SoC compatible Add a compatible string for the GXLX SoC. It's very similar to GXL but has three additional bits in MESON_SAR_ADC_REG12 for the three MPLL clocks. Acked-by: Krzysztof Kozlowski Reviewed-by: Neil Armstrong Signed-off-by: Martin Blumenstingl Link: https://patch.msgid.link/20250330101922.1942169-2-martin.blumenstingl@googlemail.com Signed-off-by: Jonathan Cameron --- Documentation/devicetree/bindings/iio/adc/amlogic,meson-saradc.yaml | 1 + 1 file changed, 1 insertion(+) diff --git a/Documentation/devicetree/bindings/iio/adc/amlogic,meson-saradc.yaml b/Documentation/devicetree/bindings/iio/adc/amlogic,meson-saradc.yaml index b0962a4583ac..bb9825e7346d 100644 --- a/Documentation/devicetree/bindings/iio/adc/amlogic,meson-saradc.yaml +++ b/Documentation/devicetree/bindings/iio/adc/amlogic,meson-saradc.yaml @@ -23,6 +23,7 @@ properties: - amlogic,meson8m2-saradc - amlogic,meson-gxbb-saradc - amlogic,meson-gxl-saradc + - amlogic,meson-gxlx-saradc - amlogic,meson-gxm-saradc - amlogic,meson-axg-saradc - amlogic,meson-g12a-saradc -- cgit v1.2.3 From c6316e19aff95bd8de39b8fdb51a040cd5f3dce4 Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Sun, 30 Mar 2025 12:19:22 +0200 Subject: iio: adc: meson: add support for the GXLX SoC The SARADC IP on the GXLX SoC itself is identical to the one found on GXL SoCs. However, GXLX SoCs require poking the first three bits in the MESON_SAR_ADC_REG12 register to get the three MPLL clocks (used as clock generators for the audio frequencies) to work. The reason why there are MPLL clock bits in the ADC register space is entirely unknown and it seems that nobody is able to comment on this. So clearly mark this as a workaround and add a warning so users are notified that this workaround can change (once we know what these bits actually do). Tested-by: Christian Hewitt Reviewed-by: Neil Armstrong Signed-off-by: Martin Blumenstingl Link: https://patch.msgid.link/20250330101922.1942169-3-martin.blumenstingl@googlemail.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/meson_saradc.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) diff --git a/drivers/iio/adc/meson_saradc.c b/drivers/iio/adc/meson_saradc.c index 997def4a4d2f..c0f2a2ef0c68 100644 --- a/drivers/iio/adc/meson_saradc.c +++ b/drivers/iio/adc/meson_saradc.c @@ -160,6 +160,11 @@ #define MESON_SAR_ADC_REG11_EOC BIT(1) #define MESON_SAR_ADC_REG11_VREF_SEL BIT(0) +#define MESON_SAR_ADC_REG12 0x30 + #define MESON_SAR_ADC_REG12_MPLL0_UNKNOWN BIT(0) + #define MESON_SAR_ADC_REG12_MPLL1_UNKNOWN BIT(1) + #define MESON_SAR_ADC_REG12_MPLL2_UNKNOWN BIT(2) + #define MESON_SAR_ADC_REG13 0x34 #define MESON_SAR_ADC_REG13_12BIT_CALIBRATION_MASK GENMASK(13, 8) @@ -326,6 +331,7 @@ struct meson_sar_adc_param { u8 cmv_select; u8 adc_eoc; enum meson_sar_adc_vref_sel vref_voltage; + bool enable_mpll_clock_workaround; }; struct meson_sar_adc_data { @@ -995,6 +1001,15 @@ static int meson_sar_adc_init(struct iio_dev *indio_dev) priv->param->cmv_select); regmap_update_bits(priv->regmap, MESON_SAR_ADC_REG11, MESON_SAR_ADC_REG11_CMV_SEL, regval); + + if (priv->param->enable_mpll_clock_workaround) { + dev_warn(dev, + "Enabling unknown bits to make the MPLL clocks work. This may change so always update dtbs and kernel together\n"); + regmap_write(priv->regmap, MESON_SAR_ADC_REG12, + MESON_SAR_ADC_REG12_MPLL0_UNKNOWN | + MESON_SAR_ADC_REG12_MPLL1_UNKNOWN | + MESON_SAR_ADC_REG12_MPLL2_UNKNOWN); + } } ret = clk_set_parent(priv->adc_sel_clk, priv->clkin); @@ -1219,6 +1234,17 @@ static const struct meson_sar_adc_param meson_sar_adc_gxl_param = { .cmv_select = 1, }; +static const struct meson_sar_adc_param meson_sar_adc_gxlx_param = { + .has_bl30_integration = true, + .clock_rate = 1200000, + .regmap_config = &meson_sar_adc_regmap_config_gxbb, + .resolution = 12, + .disable_ring_counter = 1, + .vref_voltage = 1, + .cmv_select = true, + .enable_mpll_clock_workaround = true, +}; + static const struct meson_sar_adc_param meson_sar_adc_axg_param = { .has_bl30_integration = true, .clock_rate = 1200000, @@ -1267,6 +1293,11 @@ static const struct meson_sar_adc_data meson_sar_adc_gxl_data = { .name = "meson-gxl-saradc", }; +static const struct meson_sar_adc_data meson_sar_adc_gxlx_data = { + .param = &meson_sar_adc_gxlx_param, + .name = "meson-gxlx-saradc", +}; + static const struct meson_sar_adc_data meson_sar_adc_gxm_data = { .param = &meson_sar_adc_gxl_param, .name = "meson-gxm-saradc", @@ -1298,6 +1329,9 @@ static const struct of_device_id meson_sar_adc_of_match[] = { }, { .compatible = "amlogic,meson-gxl-saradc", .data = &meson_sar_adc_gxl_data, + }, { + .compatible = "amlogic,meson-gxlx-saradc", + .data = &meson_sar_adc_gxlx_data, }, { .compatible = "amlogic,meson-gxm-saradc", .data = &meson_sar_adc_gxm_data, -- cgit v1.2.3 From 485eefd7f973501889a8d479127612d43eb08af0 Mon Sep 17 00:00:00 2001 From: Sam Winchenbach Date: Fri, 28 Mar 2025 13:48:26 -0400 Subject: dt-bindings: iio: filter: Add lpf/hpf freq margins Adds two properties to add a margin when automatically finding the corner frequencies. Signed-off-by: Sam Winchenbach Reviewed-by: Krzysztof Kozlowski Link: https://patch.msgid.link/20250328174831.227202-2-sam.winchenbach@framepointer.org Signed-off-by: Jonathan Cameron --- .../devicetree/bindings/iio/filter/adi,admv8818.yaml | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/Documentation/devicetree/bindings/iio/filter/adi,admv8818.yaml b/Documentation/devicetree/bindings/iio/filter/adi,admv8818.yaml index b77e855bd594..ff0cb553e871 100644 --- a/Documentation/devicetree/bindings/iio/filter/adi,admv8818.yaml +++ b/Documentation/devicetree/bindings/iio/filter/adi,admv8818.yaml @@ -44,6 +44,24 @@ properties: '#clock-cells': const: 0 + adi,lpf-margin-mhz: + description: + Sets the minimum distance between the fundamental frequency of `rf_in` + and the corner frequency of the low-pass, output filter when operated in + 'auto' mode. The selected low-pass corner frequency will be greater than, + or equal to, `rf_in` + `lpf-margin-hz`. If not setting is found that + satisfies this relationship the filter will be put into 'bypass'. + default: 0 + + adi,hpf-margin-mhz: + description: + Sets the minimum distance between the fundamental frequency of `rf_in` + and the corner frequency of the high-pass, input filter when operated in + 'auto' mode. The selected high-pass corner frequency will be less than, + or equal to, `rf_in` - `hpf-margin-hz`. If not setting is found that + satisfies this relationship the filter will be put into 'bypass'. + default: 0 + required: - compatible - reg @@ -61,6 +79,8 @@ examples: spi-max-frequency = <10000000>; clocks = <&admv8818_rfin>; clock-names = "rf_in"; + adi,lpf-margin-mhz = <300>; + adi,hpf-margin-mhz = <300>; }; }; ... -- cgit v1.2.3 From ef0ce24f590ac075d5eda11f2d6434b303333ed6 Mon Sep 17 00:00:00 2001 From: Sam Winchenbach Date: Fri, 28 Mar 2025 13:48:27 -0400 Subject: iio: filter: admv8818: fix band 4, state 15 Corrects the upper range of LPF Band 4 from 18.5 GHz to 18.85 GHz per the ADMV8818 datasheet Fixes: f34fe888ad05 ("iio:filter:admv8818: add support for ADMV8818") Signed-off-by: Sam Winchenbach Link: https://patch.msgid.link/20250328174831.227202-3-sam.winchenbach@framepointer.org Signed-off-by: Jonathan Cameron --- drivers/iio/filter/admv8818.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/filter/admv8818.c b/drivers/iio/filter/admv8818.c index d85b7d3de866..3d8740caa145 100644 --- a/drivers/iio/filter/admv8818.c +++ b/drivers/iio/filter/admv8818.c @@ -103,7 +103,7 @@ static const unsigned long long freq_range_lpf[4][2] = { {2050000000ULL, 3850000000ULL}, {3350000000ULL, 7250000000ULL}, {7000000000, 13000000000}, - {12550000000, 18500000000} + {12550000000, 18850000000} }; static const struct regmap_config admv8818_regmap_config = { -- cgit v1.2.3 From fb6009a28d77edec4eb548b5875dae8c79b88467 Mon Sep 17 00:00:00 2001 From: Sam Winchenbach Date: Fri, 28 Mar 2025 13:48:28 -0400 Subject: iio: filter: admv8818: fix integer overflow HZ_PER_MHZ is only unsigned long. This math overflows, leading to incorrect results. Fixes: f34fe888ad05 ("iio:filter:admv8818: add support for ADMV8818") Signed-off-by: Sam Winchenbach Link: https://patch.msgid.link/20250328174831.227202-4-sam.winchenbach@framepointer.org Signed-off-by: Jonathan Cameron --- drivers/iio/filter/admv8818.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/filter/admv8818.c b/drivers/iio/filter/admv8818.c index 3d8740caa145..cd3aff9a2f7b 100644 --- a/drivers/iio/filter/admv8818.c +++ b/drivers/iio/filter/admv8818.c @@ -154,7 +154,7 @@ static int __admv8818_hpf_select(struct admv8818_state *st, u64 freq) } /* Close HPF frequency gap between 12 and 12.5 GHz */ - if (freq >= 12000 * HZ_PER_MHZ && freq <= 12500 * HZ_PER_MHZ) { + if (freq >= 12000ULL * HZ_PER_MHZ && freq < 12500ULL * HZ_PER_MHZ) { hpf_band = 3; hpf_step = 15; } -- cgit v1.2.3 From d542db7095d322bfcdc8e306db6f8c48358c9619 Mon Sep 17 00:00:00 2001 From: Sam Winchenbach Date: Fri, 28 Mar 2025 13:48:29 -0400 Subject: iio: filter: admv8818: fix range calculation Search for the minimum error while ensuring that the LPF corner frequency is greater than the target, and the HPF corner frequency is lower than the target This fixes issues where the range calculations were suboptimal. Add two new DTS properties to set the margin between the input frequency and the calculated corner frequency Below is a generated table of the differences between the old algorithm and the new. This is a sweep from 0 to 20 GHz in 10 MHz steps. === HPF === freq = 1750 MHz, 3db: bypass => 1750 MHz freq = 3400 MHz, 3db: 3310 => 3400 MHz freq = 3410 MHz, 3db: 3310 => 3400 MHz freq = 3420 MHz, 3db: 3310 => 3400 MHz freq = 3660 MHz, 3db: 3550 => 3656 MHz freq = 6600 MHz, 3db: 6479 => 6600 MHz freq = 6610 MHz, 3db: 6479 => 6600 MHz freq = 6620 MHz, 3db: 6479 => 6600 MHz freq = 6630 MHz, 3db: 6479 => 6600 MHz freq = 6640 MHz, 3db: 6479 => 6600 MHz freq = 6650 MHz, 3db: 6479 => 6600 MHz freq = 6660 MHz, 3db: 6479 => 6600 MHz freq = 6670 MHz, 3db: 6479 => 6600 MHz freq = 6680 MHz, 3db: 6479 => 6600 MHz freq = 6690 MHz, 3db: 6479 => 6600 MHz freq = 6700 MHz, 3db: 6479 => 6600 MHz freq = 6710 MHz, 3db: 6479 => 6600 MHz freq = 6720 MHz, 3db: 6479 => 6600 MHz freq = 6730 MHz, 3db: 6479 => 6600 MHz freq = 6960 MHz, 3db: 6736 => 6960 MHz freq = 6970 MHz, 3db: 6736 => 6960 MHz freq = 6980 MHz, 3db: 6736 => 6960 MHz freq = 6990 MHz, 3db: 6736 => 6960 MHz freq = 7320 MHz, 3db: 7249 => 7320 MHz freq = 7330 MHz, 3db: 7249 => 7320 MHz freq = 7340 MHz, 3db: 7249 => 7320 MHz freq = 7350 MHz, 3db: 7249 => 7320 MHz freq = 7360 MHz, 3db: 7249 => 7320 MHz freq = 7370 MHz, 3db: 7249 => 7320 MHz freq = 7380 MHz, 3db: 7249 => 7320 MHz freq = 7390 MHz, 3db: 7249 => 7320 MHz freq = 7400 MHz, 3db: 7249 => 7320 MHz freq = 7410 MHz, 3db: 7249 => 7320 MHz freq = 7420 MHz, 3db: 7249 => 7320 MHz freq = 7430 MHz, 3db: 7249 => 7320 MHz freq = 7440 MHz, 3db: 7249 => 7320 MHz freq = 7450 MHz, 3db: 7249 => 7320 MHz freq = 7460 MHz, 3db: 7249 => 7320 MHz freq = 7470 MHz, 3db: 7249 => 7320 MHz freq = 7480 MHz, 3db: 7249 => 7320 MHz freq = 7490 MHz, 3db: 7249 => 7320 MHz freq = 7500 MHz, 3db: 7249 => 7320 MHz freq = 12500 MHz, 3db: 12000 => 12500 MHz === LPF === freq = 2050 MHz, 3db: bypass => 2050 MHz freq = 2170 MHz, 3db: 2290 => 2170 MHz freq = 2290 MHz, 3db: 2410 => 2290 MHz freq = 2410 MHz, 3db: 2530 => 2410 MHz freq = 2530 MHz, 3db: 2650 => 2530 MHz freq = 2650 MHz, 3db: 2770 => 2650 MHz freq = 2770 MHz, 3db: 2890 => 2770 MHz freq = 2890 MHz, 3db: 3010 => 2890 MHz freq = 3010 MHz, 3db: 3130 => 3010 MHz freq = 3130 MHz, 3db: 3250 => 3130 MHz freq = 3250 MHz, 3db: 3370 => 3250 MHz freq = 3260 MHz, 3db: 3370 => 3350 MHz freq = 3270 MHz, 3db: 3370 => 3350 MHz freq = 3280 MHz, 3db: 3370 => 3350 MHz freq = 3290 MHz, 3db: 3370 => 3350 MHz freq = 3300 MHz, 3db: 3370 => 3350 MHz freq = 3310 MHz, 3db: 3370 => 3350 MHz freq = 3320 MHz, 3db: 3370 => 3350 MHz freq = 3330 MHz, 3db: 3370 => 3350 MHz freq = 3340 MHz, 3db: 3370 => 3350 MHz freq = 3350 MHz, 3db: 3370 => 3350 MHz freq = 3370 MHz, 3db: 3490 => 3370 MHz freq = 3490 MHz, 3db: 3610 => 3490 MHz freq = 3610 MHz, 3db: 3730 => 3610 MHz freq = 3730 MHz, 3db: 3850 => 3730 MHz freq = 3850 MHz, 3db: 3870 => 3850 MHz freq = 3870 MHz, 3db: 4130 => 3870 MHz freq = 4130 MHz, 3db: 4390 => 4130 MHz freq = 4390 MHz, 3db: 4650 => 4390 MHz freq = 4650 MHz, 3db: 4910 => 4650 MHz freq = 4910 MHz, 3db: 5170 => 4910 MHz freq = 5170 MHz, 3db: 5430 => 5170 MHz freq = 5430 MHz, 3db: 5690 => 5430 MHz freq = 5690 MHz, 3db: 5950 => 5690 MHz freq = 5950 MHz, 3db: 6210 => 5950 MHz freq = 6210 MHz, 3db: 6470 => 6210 MHz freq = 6470 MHz, 3db: 6730 => 6470 MHz freq = 6730 MHz, 3db: 6990 => 6730 MHz freq = 6990 MHz, 3db: 7250 => 6990 MHz freq = 7000 MHz, 3db: 7250 => 7000 MHz freq = 7250 MHz, 3db: 7400 => 7250 MHz freq = 7400 MHz, 3db: 7800 => 7400 MHz freq = 7800 MHz, 3db: 8200 => 7800 MHz freq = 8200 MHz, 3db: 8600 => 8200 MHz freq = 8600 MHz, 3db: 9000 => 8600 MHz freq = 9000 MHz, 3db: 9400 => 9000 MHz freq = 9400 MHz, 3db: 9800 => 9400 MHz freq = 9800 MHz, 3db: 10200 => 9800 MHz freq = 10200 MHz, 3db: 10600 => 10200 MHz freq = 10600 MHz, 3db: 11000 => 10600 MHz freq = 11000 MHz, 3db: 11400 => 11000 MHz freq = 11400 MHz, 3db: 11800 => 11400 MHz freq = 11800 MHz, 3db: 12200 => 11800 MHz freq = 12200 MHz, 3db: 12600 => 12200 MHz freq = 12210 MHz, 3db: 12600 => 12550 MHz freq = 12220 MHz, 3db: 12600 => 12550 MHz freq = 12230 MHz, 3db: 12600 => 12550 MHz freq = 12240 MHz, 3db: 12600 => 12550 MHz freq = 12250 MHz, 3db: 12600 => 12550 MHz freq = 12260 MHz, 3db: 12600 => 12550 MHz freq = 12270 MHz, 3db: 12600 => 12550 MHz freq = 12280 MHz, 3db: 12600 => 12550 MHz freq = 12290 MHz, 3db: 12600 => 12550 MHz freq = 12300 MHz, 3db: 12600 => 12550 MHz freq = 12310 MHz, 3db: 12600 => 12550 MHz freq = 12320 MHz, 3db: 12600 => 12550 MHz freq = 12330 MHz, 3db: 12600 => 12550 MHz freq = 12340 MHz, 3db: 12600 => 12550 MHz freq = 12350 MHz, 3db: 12600 => 12550 MHz freq = 12360 MHz, 3db: 12600 => 12550 MHz freq = 12370 MHz, 3db: 12600 => 12550 MHz freq = 12380 MHz, 3db: 12600 => 12550 MHz freq = 12390 MHz, 3db: 12600 => 12550 MHz freq = 12400 MHz, 3db: 12600 => 12550 MHz freq = 12410 MHz, 3db: 12600 => 12550 MHz freq = 12420 MHz, 3db: 12600 => 12550 MHz freq = 12430 MHz, 3db: 12600 => 12550 MHz freq = 12440 MHz, 3db: 12600 => 12550 MHz freq = 12450 MHz, 3db: 12600 => 12550 MHz freq = 12460 MHz, 3db: 12600 => 12550 MHz freq = 12470 MHz, 3db: 12600 => 12550 MHz freq = 12480 MHz, 3db: 12600 => 12550 MHz freq = 12490 MHz, 3db: 12600 => 12550 MHz freq = 12500 MHz, 3db: 12600 => 12550 MHz freq = 12510 MHz, 3db: 12600 => 12550 MHz freq = 12520 MHz, 3db: 12600 => 12550 MHz freq = 12530 MHz, 3db: 12600 => 12550 MHz freq = 12540 MHz, 3db: 12600 => 12550 MHz freq = 12550 MHz, 3db: 12600 => 12550 MHz freq = 12600 MHz, 3db: 13000 => 12600 MHz freq = 12610 MHz, 3db: 13000 => 12970 MHz freq = 12620 MHz, 3db: 13000 => 12970 MHz freq = 12630 MHz, 3db: 13000 => 12970 MHz freq = 12640 MHz, 3db: 13000 => 12970 MHz freq = 12650 MHz, 3db: 13000 => 12970 MHz freq = 12660 MHz, 3db: 13000 => 12970 MHz freq = 12670 MHz, 3db: 13000 => 12970 MHz freq = 12680 MHz, 3db: 13000 => 12970 MHz freq = 12690 MHz, 3db: 13000 => 12970 MHz freq = 12700 MHz, 3db: 13000 => 12970 MHz freq = 12710 MHz, 3db: 13000 => 12970 MHz freq = 12720 MHz, 3db: 13000 => 12970 MHz freq = 12730 MHz, 3db: 13000 => 12970 MHz freq = 12740 MHz, 3db: 13000 => 12970 MHz freq = 12750 MHz, 3db: 13000 => 12970 MHz freq = 12760 MHz, 3db: 13000 => 12970 MHz freq = 12770 MHz, 3db: 13000 => 12970 MHz freq = 12780 MHz, 3db: 13000 => 12970 MHz freq = 12790 MHz, 3db: 13000 => 12970 MHz freq = 12800 MHz, 3db: 13000 => 12970 MHz freq = 12810 MHz, 3db: 13000 => 12970 MHz freq = 12820 MHz, 3db: 13000 => 12970 MHz freq = 12830 MHz, 3db: 13000 => 12970 MHz freq = 12840 MHz, 3db: 13000 => 12970 MHz freq = 12850 MHz, 3db: 13000 => 12970 MHz freq = 12860 MHz, 3db: 13000 => 12970 MHz freq = 12870 MHz, 3db: 13000 => 12970 MHz freq = 12880 MHz, 3db: 13000 => 12970 MHz freq = 12890 MHz, 3db: 13000 => 12970 MHz freq = 12900 MHz, 3db: 13000 => 12970 MHz freq = 12910 MHz, 3db: 13000 => 12970 MHz freq = 12920 MHz, 3db: 13000 => 12970 MHz freq = 12930 MHz, 3db: 13000 => 12970 MHz freq = 12940 MHz, 3db: 13000 => 12970 MHz freq = 12950 MHz, 3db: 13000 => 12970 MHz freq = 12960 MHz, 3db: 13000 => 12970 MHz freq = 12970 MHz, 3db: 13000 => 12970 MHz freq = 13000 MHz, 3db: 13390 => 13000 MHz freq = 13390 MHz, 3db: 13810 => 13390 MHz freq = 13810 MHz, 3db: 14230 => 13810 MHz freq = 14230 MHz, 3db: 14650 => 14230 MHz freq = 14650 MHz, 3db: 15070 => 14650 MHz freq = 15070 MHz, 3db: 15490 => 15070 MHz freq = 15490 MHz, 3db: 15910 => 15490 MHz freq = 15910 MHz, 3db: 16330 => 15910 MHz freq = 16330 MHz, 3db: 16750 => 16330 MHz freq = 16750 MHz, 3db: 17170 => 16750 MHz freq = 17170 MHz, 3db: 17590 => 17170 MHz freq = 17590 MHz, 3db: 18010 => 17590 MHz freq = 18010 MHz, 3db: 18430 => 18010 MHz freq = 18430 MHz, 3db: 18850 => 18430 MHz freq = 18850 MHz, 3db: bypass => 18850 MHz Fixes: f34fe888ad05 ("iio:filter:admv8818: add support for ADMV8818") Signed-off-by: Sam Winchenbach Link: https://patch.msgid.link/20250328174831.227202-5-sam.winchenbach@framepointer.org Signed-off-by: Jonathan Cameron --- drivers/iio/filter/admv8818.c | 205 +++++++++++++++++++++++++++++++----------- 1 file changed, 152 insertions(+), 53 deletions(-) diff --git a/drivers/iio/filter/admv8818.c b/drivers/iio/filter/admv8818.c index cd3aff9a2f7b..380e119b3cf5 100644 --- a/drivers/iio/filter/admv8818.c +++ b/drivers/iio/filter/admv8818.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include #include @@ -70,6 +71,16 @@ #define ADMV8818_HPF_WR0_MSK GENMASK(7, 4) #define ADMV8818_LPF_WR0_MSK GENMASK(3, 0) +#define ADMV8818_BAND_BYPASS 0 +#define ADMV8818_BAND_MIN 1 +#define ADMV8818_BAND_MAX 4 +#define ADMV8818_BAND_CORNER_LOW 0 +#define ADMV8818_BAND_CORNER_HIGH 1 + +#define ADMV8818_STATE_MIN 0 +#define ADMV8818_STATE_MAX 15 +#define ADMV8818_NUM_STATES 16 + enum { ADMV8818_BW_FREQ, ADMV8818_CENTER_FREQ @@ -90,16 +101,20 @@ struct admv8818_state { struct mutex lock; unsigned int filter_mode; u64 cf_hz; + u64 lpf_margin_hz; + u64 hpf_margin_hz; }; -static const unsigned long long freq_range_hpf[4][2] = { +static const unsigned long long freq_range_hpf[5][2] = { + {0ULL, 0ULL}, /* bypass */ {1750000000ULL, 3550000000ULL}, {3400000000ULL, 7250000000ULL}, {6600000000, 12000000000}, {12500000000, 19900000000} }; -static const unsigned long long freq_range_lpf[4][2] = { +static const unsigned long long freq_range_lpf[5][2] = { + {U64_MAX, U64_MAX}, /* bypass */ {2050000000ULL, 3850000000ULL}, {3350000000ULL, 7250000000ULL}, {7000000000, 13000000000}, @@ -121,44 +136,59 @@ static const char * const admv8818_modes[] = { static int __admv8818_hpf_select(struct admv8818_state *st, u64 freq) { - unsigned int hpf_step = 0, hpf_band = 0, i, j; - u64 freq_step; - int ret; + int band, state, ret; + unsigned int hpf_state = ADMV8818_STATE_MIN, hpf_band = ADMV8818_BAND_BYPASS; + u64 freq_error, min_freq_error, freq_corner, freq_step; - if (freq < freq_range_hpf[0][0]) + if (freq < freq_range_hpf[ADMV8818_BAND_MIN][ADMV8818_BAND_CORNER_LOW]) goto hpf_write; - if (freq > freq_range_hpf[3][1]) { - hpf_step = 15; - hpf_band = 4; - + if (freq >= freq_range_hpf[ADMV8818_BAND_MAX][ADMV8818_BAND_CORNER_HIGH]) { + hpf_state = ADMV8818_STATE_MAX; + hpf_band = ADMV8818_BAND_MAX; goto hpf_write; } - for (i = 0; i < 4; i++) { - freq_step = div_u64((freq_range_hpf[i][1] - - freq_range_hpf[i][0]), 15); + /* Close HPF frequency gap between 12 and 12.5 GHz */ + if (freq >= 12000ULL * HZ_PER_MHZ && freq < 12500ULL * HZ_PER_MHZ) { + hpf_state = ADMV8818_STATE_MAX; + hpf_band = 3; + goto hpf_write; + } - if (freq > freq_range_hpf[i][0] && - (freq < freq_range_hpf[i][1] + freq_step)) { - hpf_band = i + 1; + min_freq_error = U64_MAX; + for (band = ADMV8818_BAND_MIN; band <= ADMV8818_BAND_MAX; band++) { + /* + * This (and therefore all other ranges) have a corner + * frequency higher than the target frequency. + */ + if (freq_range_hpf[band][ADMV8818_BAND_CORNER_LOW] > freq) + break; - for (j = 1; j <= 16; j++) { - if (freq < (freq_range_hpf[i][0] + (freq_step * j))) { - hpf_step = j - 1; - break; - } + freq_step = freq_range_hpf[band][ADMV8818_BAND_CORNER_HIGH] - + freq_range_hpf[band][ADMV8818_BAND_CORNER_LOW]; + freq_step = div_u64(freq_step, ADMV8818_NUM_STATES - 1); + + for (state = ADMV8818_STATE_MIN; state <= ADMV8818_STATE_MAX; state++) { + freq_corner = freq_range_hpf[band][ADMV8818_BAND_CORNER_LOW] + + freq_step * state; + + /* + * This (and therefore all other states) have a corner + * frequency higher than the target frequency. + */ + if (freq_corner > freq) + break; + + freq_error = freq - freq_corner; + if (freq_error < min_freq_error) { + min_freq_error = freq_error; + hpf_state = state; + hpf_band = band; } - break; } } - /* Close HPF frequency gap between 12 and 12.5 GHz */ - if (freq >= 12000ULL * HZ_PER_MHZ && freq < 12500ULL * HZ_PER_MHZ) { - hpf_band = 3; - hpf_step = 15; - } - hpf_write: ret = regmap_update_bits(st->regmap, ADMV8818_REG_WR0_SW, ADMV8818_SW_IN_SET_WR0_MSK | @@ -170,7 +200,7 @@ hpf_write: return regmap_update_bits(st->regmap, ADMV8818_REG_WR0_FILTER, ADMV8818_HPF_WR0_MSK, - FIELD_PREP(ADMV8818_HPF_WR0_MSK, hpf_step)); + FIELD_PREP(ADMV8818_HPF_WR0_MSK, hpf_state)); } static int admv8818_hpf_select(struct admv8818_state *st, u64 freq) @@ -186,31 +216,52 @@ static int admv8818_hpf_select(struct admv8818_state *st, u64 freq) static int __admv8818_lpf_select(struct admv8818_state *st, u64 freq) { - unsigned int lpf_step = 0, lpf_band = 0, i, j; - u64 freq_step; - int ret; + int band, state, ret; + unsigned int lpf_state = ADMV8818_STATE_MIN, lpf_band = ADMV8818_BAND_BYPASS; + u64 freq_error, min_freq_error, freq_corner, freq_step; - if (freq > freq_range_lpf[3][1]) + if (freq > freq_range_lpf[ADMV8818_BAND_MAX][ADMV8818_BAND_CORNER_HIGH]) goto lpf_write; - if (freq < freq_range_lpf[0][0]) { - lpf_band = 1; - + if (freq < freq_range_lpf[ADMV8818_BAND_MIN][ADMV8818_BAND_CORNER_LOW]) { + lpf_state = ADMV8818_STATE_MIN; + lpf_band = ADMV8818_BAND_MIN; goto lpf_write; } - for (i = 0; i < 4; i++) { - if (freq > freq_range_lpf[i][0] && freq < freq_range_lpf[i][1]) { - lpf_band = i + 1; - freq_step = div_u64((freq_range_lpf[i][1] - freq_range_lpf[i][0]), 15); + min_freq_error = U64_MAX; + for (band = ADMV8818_BAND_MAX; band >= ADMV8818_BAND_MIN; --band) { + /* + * At this point the highest corner frequency of + * all remaining ranges is below the target. + * LPF corner should be >= the target. + */ + if (freq > freq_range_lpf[band][ADMV8818_BAND_CORNER_HIGH]) + break; + + freq_step = freq_range_lpf[band][ADMV8818_BAND_CORNER_HIGH] - + freq_range_lpf[band][ADMV8818_BAND_CORNER_LOW]; + freq_step = div_u64(freq_step, ADMV8818_NUM_STATES - 1); + + for (state = ADMV8818_STATE_MAX; state >= ADMV8818_STATE_MIN; --state) { - for (j = 0; j <= 15; j++) { - if (freq < (freq_range_lpf[i][0] + (freq_step * j))) { - lpf_step = j; - break; - } + freq_corner = freq_range_lpf[band][ADMV8818_BAND_CORNER_LOW] + + state * freq_step; + + /* + * At this point all other states in range will + * place the corner frequency below the target + * LPF corner should >= the target. + */ + if (freq > freq_corner) + break; + + freq_error = freq_corner - freq; + if (freq_error < min_freq_error) { + min_freq_error = freq_error; + lpf_state = state; + lpf_band = band; } - break; } } @@ -225,7 +276,7 @@ lpf_write: return regmap_update_bits(st->regmap, ADMV8818_REG_WR0_FILTER, ADMV8818_LPF_WR0_MSK, - FIELD_PREP(ADMV8818_LPF_WR0_MSK, lpf_step)); + FIELD_PREP(ADMV8818_LPF_WR0_MSK, lpf_state)); } static int admv8818_lpf_select(struct admv8818_state *st, u64 freq) @@ -242,16 +293,28 @@ static int admv8818_lpf_select(struct admv8818_state *st, u64 freq) static int admv8818_rfin_band_select(struct admv8818_state *st) { int ret; + u64 hpf_corner_target, lpf_corner_target; st->cf_hz = clk_get_rate(st->clkin); + /* Check for underflow */ + if (st->cf_hz > st->hpf_margin_hz) + hpf_corner_target = st->cf_hz - st->hpf_margin_hz; + else + hpf_corner_target = 0; + + /* Check for overflow */ + lpf_corner_target = st->cf_hz + st->lpf_margin_hz; + if (lpf_corner_target < st->cf_hz) + lpf_corner_target = U64_MAX; + mutex_lock(&st->lock); - ret = __admv8818_hpf_select(st, st->cf_hz); + ret = __admv8818_hpf_select(st, hpf_corner_target); if (ret) goto exit; - ret = __admv8818_lpf_select(st, st->cf_hz); + ret = __admv8818_lpf_select(st, lpf_corner_target); exit: mutex_unlock(&st->lock); return ret; @@ -278,8 +341,11 @@ static int __admv8818_read_hpf_freq(struct admv8818_state *st, u64 *hpf_freq) hpf_state = FIELD_GET(ADMV8818_HPF_WR0_MSK, data); - *hpf_freq = div_u64(freq_range_hpf[hpf_band - 1][1] - freq_range_hpf[hpf_band - 1][0], 15); - *hpf_freq = freq_range_hpf[hpf_band - 1][0] + (*hpf_freq * hpf_state); + *hpf_freq = freq_range_hpf[hpf_band][ADMV8818_BAND_CORNER_HIGH] - + freq_range_hpf[hpf_band][ADMV8818_BAND_CORNER_LOW]; + *hpf_freq = div_u64(*hpf_freq, ADMV8818_NUM_STATES - 1); + *hpf_freq = freq_range_hpf[hpf_band][ADMV8818_BAND_CORNER_LOW] + + (*hpf_freq * hpf_state); return ret; } @@ -316,8 +382,11 @@ static int __admv8818_read_lpf_freq(struct admv8818_state *st, u64 *lpf_freq) lpf_state = FIELD_GET(ADMV8818_LPF_WR0_MSK, data); - *lpf_freq = div_u64(freq_range_lpf[lpf_band - 1][1] - freq_range_lpf[lpf_band - 1][0], 15); - *lpf_freq = freq_range_lpf[lpf_band - 1][0] + (*lpf_freq * lpf_state); + *lpf_freq = freq_range_lpf[lpf_band][ADMV8818_BAND_CORNER_HIGH] - + freq_range_lpf[lpf_band][ADMV8818_BAND_CORNER_LOW]; + *lpf_freq = div_u64(*lpf_freq, ADMV8818_NUM_STATES - 1); + *lpf_freq = freq_range_lpf[lpf_band][ADMV8818_BAND_CORNER_LOW] + + (*lpf_freq * lpf_state); return ret; } @@ -641,6 +710,32 @@ static int admv8818_clk_setup(struct admv8818_state *st) return devm_add_action_or_reset(&spi->dev, admv8818_clk_notifier_unreg, st); } +static int admv8818_read_properties(struct admv8818_state *st) +{ + struct spi_device *spi = st->spi; + u32 mhz; + int ret; + + ret = device_property_read_u32(&spi->dev, "adi,lpf-margin-mhz", &mhz); + if (ret == 0) + st->lpf_margin_hz = (u64)mhz * HZ_PER_MHZ; + else if (ret == -EINVAL) + st->lpf_margin_hz = 0; + else + return ret; + + + ret = device_property_read_u32(&spi->dev, "adi,hpf-margin-mhz", &mhz); + if (ret == 0) + st->hpf_margin_hz = (u64)mhz * HZ_PER_MHZ; + else if (ret == -EINVAL) + st->hpf_margin_hz = 0; + else if (ret < 0) + return ret; + + return 0; +} + static int admv8818_probe(struct spi_device *spi) { struct iio_dev *indio_dev; @@ -672,6 +767,10 @@ static int admv8818_probe(struct spi_device *spi) mutex_init(&st->lock); + ret = admv8818_read_properties(st); + if (ret) + return ret; + ret = admv8818_init(st); if (ret) return ret; -- cgit v1.2.3 From c31752b16de1dcd735162046dc33000311ad5b85 Mon Sep 17 00:00:00 2001 From: Sam Winchenbach Date: Fri, 28 Mar 2025 13:48:30 -0400 Subject: iio: core: Add support for writing 64 bit attrs Prior to this patch it was only possible to read 64 bit integers. Signed-off-by: Sam Winchenbach Link: https://patch.msgid.link/20250328174831.227202-6-sam.winchenbach@framepointer.org Signed-off-by: Jonathan Cameron --- drivers/iio/industrialio-core.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c index b9f4113ae5fc..c9955a1c1090 100644 --- a/drivers/iio/industrialio-core.c +++ b/drivers/iio/industrialio-core.c @@ -26,6 +26,7 @@ #include #include #include +#include #include #include @@ -966,8 +967,10 @@ static ssize_t iio_write_channel_info(struct device *dev, struct iio_dev_attr *this_attr = to_iio_dev_attr(attr); int ret, fract_mult = 100000; int integer, fract = 0; + long long integer64; bool is_char = false; bool scale_db = false; + bool is_64bit = false; /* Assumes decimal - precision based on number of digits */ if (!indio_dev->info->write_raw) @@ -991,6 +994,9 @@ static ssize_t iio_write_channel_info(struct device *dev, case IIO_VAL_CHAR: is_char = true; break; + case IIO_VAL_INT_64: + is_64bit = true; + break; default: return -EINVAL; } @@ -1001,6 +1007,13 @@ static ssize_t iio_write_channel_info(struct device *dev, if (sscanf(buf, "%c", &ch) != 1) return -EINVAL; integer = ch; + } else if (is_64bit) { + ret = kstrtoll(buf, 0, &integer64); + if (ret) + return ret; + + fract = upper_32_bits(integer64); + integer = lower_32_bits(integer64); } else { ret = __iio_str_to_fixpoint(buf, fract_mult, &integer, &fract, scale_db); -- cgit v1.2.3 From 9016776f1301627de78a633bda7c898425a56572 Mon Sep 17 00:00:00 2001 From: Brian Pellegrino Date: Fri, 28 Mar 2025 13:48:31 -0400 Subject: iio: filter: admv8818: Support frequencies >= 2^32 This patch allows writing u64 values to the ADMV8818's high and low-pass filter frequencies. It includes the following changes: - Rejects negative frequencies in admv8818_write_raw. - Adds a write_raw_get_fmt function to admv8818's iio_info, returning IIO_VAL_INT_64 for the high and low-pass filter 3dB frequency channels. Fixes: f34fe888ad05 ("iio:filter:admv8818: add support for ADMV8818") Signed-off-by: Brian Pellegrino Signed-off-by: Sam Winchenbach Link: https://patch.msgid.link/20250328174831.227202-7-sam.winchenbach@framepointer.org Signed-off-by: Jonathan Cameron --- drivers/iio/filter/admv8818.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/iio/filter/admv8818.c b/drivers/iio/filter/admv8818.c index 380e119b3cf5..cc8ce0fe74e7 100644 --- a/drivers/iio/filter/admv8818.c +++ b/drivers/iio/filter/admv8818.c @@ -402,6 +402,19 @@ static int admv8818_read_lpf_freq(struct admv8818_state *st, u64 *lpf_freq) return ret; } +static int admv8818_write_raw_get_fmt(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + long mask) +{ + switch (mask) { + case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY: + case IIO_CHAN_INFO_HIGH_PASS_FILTER_3DB_FREQUENCY: + return IIO_VAL_INT_64; + default: + return -EINVAL; + } +} + static int admv8818_write_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int val, int val2, long info) @@ -410,6 +423,9 @@ static int admv8818_write_raw(struct iio_dev *indio_dev, u64 freq = ((u64)val2 << 32 | (u32)val); + if ((s64)freq < 0) + return -EINVAL; + switch (info) { case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY: return admv8818_lpf_select(st, freq); @@ -571,6 +587,7 @@ set_mode: static const struct iio_info admv8818_info = { .write_raw = admv8818_write_raw, + .write_raw_get_fmt = admv8818_write_raw_get_fmt, .read_raw = admv8818_read_raw, .debugfs_reg_access = &admv8818_reg_access, }; -- cgit v1.2.3 From 4a135e924fae08053917b1c0ba0b89bd66bf2be4 Mon Sep 17 00:00:00 2001 From: Matti Vaittinen Date: Mon, 24 Mar 2025 09:12:36 +0200 Subject: dt-bindings: ROHM BD79124 ADC/GPO Add binding document for the ROHM BD79124 ADC / GPO. ROHM BD79124 is a 8-channel, 12-bit ADC. The input pins can also be used as general purpose outputs. Signed-off-by: Matti Vaittinen Reviewed-by: Conor Dooley Link: https://patch.msgid.link/e16f54b6214b0d796216729a7e29b8f7be9ae19e.1742560649.git.mazziesaccount@gmail.com Signed-off-by: Jonathan Cameron --- .../devicetree/bindings/iio/adc/rohm,bd79124.yaml | 114 +++++++++++++++++++++ 1 file changed, 114 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/adc/rohm,bd79124.yaml diff --git a/Documentation/devicetree/bindings/iio/adc/rohm,bd79124.yaml b/Documentation/devicetree/bindings/iio/adc/rohm,bd79124.yaml new file mode 100644 index 000000000000..503285823376 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/rohm,bd79124.yaml @@ -0,0 +1,114 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/adc/rohm,bd79124.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: ROHM BD79124 ADC/GPO + +maintainers: + - Matti Vaittinen + +description: | + The ROHM BD79124 is a 12-bit, 8-channel, SAR ADC. The ADC supports + an automatic measurement mode, with an alarm interrupt for out-of-window + measurements. ADC input pins can be also configured as general purpose + outputs. + +properties: + compatible: + const: rohm,bd79124 + + reg: + description: + I2C slave address. + maxItems: 1 + + interrupts: + maxItems: 1 + + gpio-controller: true + + "#gpio-cells": + const: 1 + description: + The pin number. + + vdd-supply: true + + iovdd-supply: true + + "#address-cells": + const: 1 + + "#size-cells": + const: 0 + +patternProperties: + "^channel@[0-7]+$": + type: object + $ref: /schemas/iio/adc/adc.yaml# + description: Represents ADC channel. + + properties: + reg: + description: AIN pin number + minimum: 0 + maximum: 7 + + required: + - reg + + additionalProperties: false + +required: + - compatible + - reg + - iovdd-supply + - vdd-supply + +additionalProperties: false + +examples: + - | + #include + #include + i2c { + #address-cells = <1>; + #size-cells = <0>; + adc: adc@10 { + compatible = "rohm,bd79124"; + reg = <0x10>; + + interrupt-parent = <&gpio1>; + interrupts = <29 8>; + + vdd-supply = <&dummyreg>; + iovdd-supply = <&dummyreg>; + + #address-cells = <1>; + #size-cells = <0>; + + channel@0 { + reg = <0>; + }; + channel@1 { + reg = <1>; + }; + channel@2 { + reg = <2>; + }; + channel@3 { + reg = <3>; + }; + channel@4 { + reg = <4>; + }; + channel@5 { + reg = <5>; + }; + channel@6 { + reg = <6>; + }; + }; + }; -- cgit v1.2.3 From f24303631489d250f330373a59b3412103a93b67 Mon Sep 17 00:00:00 2001 From: Matti Vaittinen Date: Mon, 24 Mar 2025 09:12:50 +0200 Subject: property: Add functions to iterate named child There are a few use-cases where child nodes with a specific name need to be parsed. Code like: fwnode_for_each_child_node() if (fwnode_name_eq()) ... can be found from a various drivers/subsystems. Adding a macro for this can simplify things a bit. In a few cases the data from the found nodes is later added to an array, which is allocated based on the number of found nodes. One example of such use is the IIO subsystem's ADC channel nodes, where the relevant nodes are named as channel[@N]. Add helpers for iterating and counting device's sub-nodes with certain name instead of open-coding this in every user. Suggested-by: Jonathan Cameron Signed-off-by: Matti Vaittinen Reviewed-by: Andy Shevchenko Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/2767173b7b18e974c0bac244688214bd3863ff06.1742560649.git.mazziesaccount@gmail.com Signed-off-by: Jonathan Cameron --- drivers/base/property.c | 27 +++++++++++++++++++++++++++ include/linux/property.h | 20 ++++++++++++++++++++ 2 files changed, 47 insertions(+) diff --git a/drivers/base/property.c b/drivers/base/property.c index c1392743df9c..f42f32ff45fc 100644 --- a/drivers/base/property.c +++ b/drivers/base/property.c @@ -945,6 +945,33 @@ unsigned int device_get_child_node_count(const struct device *dev) } EXPORT_SYMBOL_GPL(device_get_child_node_count); +/** + * fwnode_get_named_child_node_count - number of child nodes with given name + * @fwnode: Node which child nodes are counted. + * @name: String to match child node name against. + * + * Scan child nodes and count all the nodes with a specific name. Potential + * 'number' -ending after the 'at sign' for scanned names is ignored. + * E.g.:: + * fwnode_get_named_child_node_count(fwnode, "channel"); + * would match all the nodes:: + * channel { }, channel@0 {}, channel@0xabba {}... + * + * Return: the number of child nodes with a matching name for a given device. + */ +unsigned int fwnode_get_named_child_node_count(const struct fwnode_handle *fwnode, + const char *name) +{ + struct fwnode_handle *child; + unsigned int count = 0; + + fwnode_for_each_named_child_node(fwnode, child, name) + count++; + + return count; +} +EXPORT_SYMBOL_GPL(fwnode_get_named_child_node_count); + bool device_dma_supported(const struct device *dev) { return fwnode_call_bool_op(dev_fwnode(dev), device_dma_supported); diff --git a/include/linux/property.h b/include/linux/property.h index e214ecd241eb..3e83babac0b0 100644 --- a/include/linux/property.h +++ b/include/linux/property.h @@ -167,6 +167,10 @@ struct fwnode_handle *fwnode_get_next_available_child_node( for (child = fwnode_get_next_child_node(fwnode, NULL); child; \ child = fwnode_get_next_child_node(fwnode, child)) +#define fwnode_for_each_named_child_node(fwnode, child, name) \ + fwnode_for_each_child_node(fwnode, child) \ + if (!fwnode_name_eq(child, name)) { } else + #define fwnode_for_each_available_child_node(fwnode, child) \ for (child = fwnode_get_next_available_child_node(fwnode, NULL); child;\ child = fwnode_get_next_available_child_node(fwnode, child)) @@ -178,11 +182,19 @@ struct fwnode_handle *device_get_next_child_node(const struct device *dev, for (child = device_get_next_child_node(dev, NULL); child; \ child = device_get_next_child_node(dev, child)) +#define device_for_each_named_child_node(dev, child, name) \ + device_for_each_child_node(dev, child) \ + if (!fwnode_name_eq(child, name)) { } else + #define device_for_each_child_node_scoped(dev, child) \ for (struct fwnode_handle *child __free(fwnode_handle) = \ device_get_next_child_node(dev, NULL); \ child; child = device_get_next_child_node(dev, child)) +#define device_for_each_named_child_node_scoped(dev, child, name) \ + device_for_each_child_node_scoped(dev, child) \ + if (!fwnode_name_eq(child, name)) { } else + struct fwnode_handle *fwnode_get_named_child_node(const struct fwnode_handle *fwnode, const char *childname); struct fwnode_handle *device_get_named_child_node(const struct device *dev, @@ -210,6 +222,14 @@ int fwnode_irq_get_byname(const struct fwnode_handle *fwnode, const char *name); unsigned int device_get_child_node_count(const struct device *dev); +unsigned int fwnode_get_named_child_node_count(const struct fwnode_handle *fwnode, + const char *name); +static inline unsigned int device_get_named_child_node_count(const struct device *dev, + const char *name) +{ + return fwnode_get_named_child_node_count(dev_fwnode(dev), name); +} + static inline int device_property_read_u8(const struct device *dev, const char *propname, u8 *val) { -- cgit v1.2.3 From f3a8f870fa9c84b34aad4c72c8d0a1213ba13a36 Mon Sep 17 00:00:00 2001 From: Matti Vaittinen Date: Mon, 24 Mar 2025 09:13:03 +0200 Subject: iio: adc: add helpers for parsing ADC nodes There are ADC ICs which may have some of the AIN pins usable for other functions. These ICs may have some of the AIN pins wired so that they should not be used for ADC. A common way of marking pins that can be used as ADC inputs is to add corresponding channel@N nodes in the device tree as described in the ADC binding yaml. Add couple of helper functions which can be used to retrieve the channel information from the device node. Signed-off-by: Matti Vaittinen Reviewed-by: Andy Shevchenko Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/f1d8b3e15237947738912c0d297b3e1e21d8b03e.1742560649.git.mazziesaccount@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/Kconfig | 3 ++ drivers/iio/adc/Makefile | 2 + drivers/iio/adc/industrialio-adc.c | 82 ++++++++++++++++++++++++++++++++++++++ include/linux/iio/adc-helpers.h | 27 +++++++++++++ 4 files changed, 114 insertions(+) create mode 100644 drivers/iio/adc/industrialio-adc.c create mode 100644 include/linux/iio/adc-helpers.h diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig index 75ed633a3c43..b210d6371a02 100644 --- a/drivers/iio/adc/Kconfig +++ b/drivers/iio/adc/Kconfig @@ -6,6 +6,9 @@ menu "Analog to digital converters" +config IIO_ADC_HELPER + tristate + config AB8500_GPADC bool "ST-Ericsson AB8500 GPADC driver" depends on AB8500_CORE && REGULATOR_AB8500 diff --git a/drivers/iio/adc/Makefile b/drivers/iio/adc/Makefile index 3e918c3eec69..6cd2ec8e2c01 100644 --- a/drivers/iio/adc/Makefile +++ b/drivers/iio/adc/Makefile @@ -3,6 +3,8 @@ # Makefile for IIO ADC drivers # +obj-$(CONFIG_IIO_ADC_HELPER) += industrialio-adc.o + # When adding new entries keep the list in alphabetical order obj-$(CONFIG_AB8500_GPADC) += ab8500-gpadc.o obj-$(CONFIG_AD_SIGMA_DELTA) += ad_sigma_delta.o diff --git a/drivers/iio/adc/industrialio-adc.c b/drivers/iio/adc/industrialio-adc.c new file mode 100644 index 000000000000..b4057230e749 --- /dev/null +++ b/drivers/iio/adc/industrialio-adc.c @@ -0,0 +1,82 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Helpers for parsing common ADC information from a firmware node. + * + * Copyright (c) 2025 Matti Vaittinen + */ + +#include +#include +#include +#include +#include +#include + +#include +#include + +/** + * devm_iio_adc_device_alloc_chaninfo_se - allocate and fill iio_chan_spec for ADC + * + * Scan the device node for single-ended ADC channel information. Channel ID is + * expected to be found from the "reg" property. Allocate and populate the + * iio_chan_spec structure corresponding to channels that are found. The memory + * for iio_chan_spec structure will be freed upon device detach. + * + * @dev: Pointer to the ADC device. + * @template: Template iio_chan_spec from which the fields of all + * found and allocated channels are initialized. + * @max_chan_id: Maximum value of a channel ID. Use negative value if no + * checking is required. + * @cs: Location where pointer to allocated iio_chan_spec + * should be stored. + * + * Return: Number of found channels on success. Negative value to indicate + * failure. Specifically, -ENOENT if no channel nodes were found. + */ +int devm_iio_adc_device_alloc_chaninfo_se(struct device *dev, + const struct iio_chan_spec *template, + int max_chan_id, + struct iio_chan_spec **cs) +{ + struct iio_chan_spec *chan_array, *chan; + int num_chan, ret; + + num_chan = iio_adc_device_num_channels(dev); + if (num_chan < 0) + return num_chan; + + if (!num_chan) + return -ENOENT; + + chan_array = devm_kcalloc(dev, num_chan, sizeof(*chan_array), + GFP_KERNEL); + if (!chan_array) + return -ENOMEM; + + chan = &chan_array[0]; + + device_for_each_named_child_node_scoped(dev, child, "channel") { + u32 ch; + + ret = fwnode_property_read_u32(child, "reg", &ch); + if (ret) + return ret; + + if (max_chan_id >= 0 && ch > max_chan_id) + return -ERANGE; + + *chan = *template; + chan->channel = ch; + chan++; + } + + *cs = chan_array; + + return num_chan; +} +EXPORT_SYMBOL_NS_GPL(devm_iio_adc_device_alloc_chaninfo_se, "IIO_DRIVER"); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Matti Vaittinen "); +MODULE_DESCRIPTION("IIO ADC fwnode parsing helpers"); diff --git a/include/linux/iio/adc-helpers.h b/include/linux/iio/adc-helpers.h new file mode 100644 index 000000000000..56b092a2a4c4 --- /dev/null +++ b/include/linux/iio/adc-helpers.h @@ -0,0 +1,27 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +/* + * The industrial I/O ADC firmware property parsing helpers + * + * Copyright (c) 2025 Matti Vaittinen + */ + +#ifndef _INDUSTRIAL_IO_ADC_HELPERS_H_ +#define _INDUSTRIAL_IO_ADC_HELPERS_H_ + +#include + +struct device; +struct iio_chan_spec; + +static inline int iio_adc_device_num_channels(struct device *dev) +{ + return device_get_named_child_node_count(dev, "channel"); +} + +int devm_iio_adc_device_alloc_chaninfo_se(struct device *dev, + const struct iio_chan_spec *template, + int max_chan_id, + struct iio_chan_spec **cs); + +#endif /* _INDUSTRIAL_IO_ADC_HELPERS_H_ */ -- cgit v1.2.3 From 2d17ed10e4905414519297a8ad6a21dc9b4b8e8a Mon Sep 17 00:00:00 2001 From: Matti Vaittinen Date: Mon, 24 Mar 2025 09:13:16 +0200 Subject: iio: adc: rzg2l_adc: Use adc-helpers The new devm_iio_adc_device_alloc_chaninfo_se() -helper is intended to help drivers avoid open-coding the for_each_node -loop for getting the channel IDs. The helper provides standard way to detect the ADC channel nodes (by the node name), and a standard way to convert the "reg" -properties to channel identification numbers, used in the struct iio_chan_spec. Furthermore, the helper can optionally check the found channel IDs are smaller than given maximum. This is useful for callers which later use the IDs for example for indexing a channel data array. The original driver treated all found child nodes as channel nodes. The new helper requires channel nodes to be named channel[@N]. This should help avoid problems with devices which may contain also other but ADC child nodes. Quick grep from arch/* with the rzg2l_adc's compatible string didn't reveal any in-tree .dts with channel nodes named otherwise. Also, same grep shows all the .dts seem to have channel IDs between 0..num of channels. Use the new helper. Signed-off-by: Matti Vaittinen Reviewed-by: Andy Shevchenko Tested-by: Claudiu Beznea Reviewed-by: Claudiu Beznea Link: https://patch.msgid.link/e84ccff01070eaee3dd1ae2d7e109f963168f586.1742560649.git.mazziesaccount@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/Kconfig | 1 + drivers/iio/adc/rzg2l_adc.c | 39 ++++++++++++++++----------------------- 2 files changed, 17 insertions(+), 23 deletions(-) diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig index b210d6371a02..57ea8cd464ca 100644 --- a/drivers/iio/adc/Kconfig +++ b/drivers/iio/adc/Kconfig @@ -1266,6 +1266,7 @@ config RICHTEK_RTQ6056 config RZG2L_ADC tristate "Renesas RZ/G2L ADC driver" depends on ARCH_RZG2L || COMPILE_TEST + select IIO_ADC_HELPER help Say yes here to build support for the ADC found in Renesas RZ/G2L family. diff --git a/drivers/iio/adc/rzg2l_adc.c b/drivers/iio/adc/rzg2l_adc.c index 883c167c0670..8097e59da516 100644 --- a/drivers/iio/adc/rzg2l_adc.c +++ b/drivers/iio/adc/rzg2l_adc.c @@ -11,6 +11,7 @@ #include #include #include +#include #include #include #include @@ -324,48 +325,39 @@ static irqreturn_t rzg2l_adc_isr(int irq, void *dev_id) return IRQ_HANDLED; } +static const struct iio_chan_spec rzg2l_adc_chan_template = { + .indexed = 1, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), +}; + static int rzg2l_adc_parse_properties(struct platform_device *pdev, struct rzg2l_adc *adc) { const struct rzg2l_adc_hw_params *hw_params = adc->hw_params; struct iio_chan_spec *chan_array; struct rzg2l_adc_data *data; - unsigned int channel; int num_channels; - int ret; u8 i; data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); if (!data) return -ENOMEM; - num_channels = device_get_child_node_count(&pdev->dev); - if (!num_channels) - return dev_err_probe(&pdev->dev, -ENODEV, "no channel children\n"); + num_channels = devm_iio_adc_device_alloc_chaninfo_se(&pdev->dev, + &rzg2l_adc_chan_template, + hw_params->num_channels - 1, + &chan_array); + if (num_channels < 0) + return num_channels; if (num_channels > hw_params->num_channels) return dev_err_probe(&pdev->dev, -EINVAL, "num of channel children out of range\n"); - chan_array = devm_kcalloc(&pdev->dev, num_channels, sizeof(*chan_array), - GFP_KERNEL); - if (!chan_array) - return -ENOMEM; + for (i = 0; i < num_channels; i++) { + int channel = chan_array[i].channel; - i = 0; - device_for_each_child_node_scoped(&pdev->dev, fwnode) { - ret = fwnode_property_read_u32(fwnode, "reg", &channel); - if (ret) - return ret; - - if (channel >= hw_params->num_channels) - return -EINVAL; - - chan_array[i].type = rzg2l_adc_channels[channel].type; - chan_array[i].indexed = 1; - chan_array[i].channel = channel; - chan_array[i].info_mask_separate = BIT(IIO_CHAN_INFO_RAW); chan_array[i].datasheet_name = rzg2l_adc_channels[channel].name; - i++; + chan_array[i].type = rzg2l_adc_channels[channel].type; } data->num_channels = num_channels; @@ -626,3 +618,4 @@ module_platform_driver(rzg2l_adc_driver); MODULE_AUTHOR("Lad Prabhakar "); MODULE_DESCRIPTION("Renesas RZ/G2L ADC driver"); MODULE_LICENSE("GPL v2"); +MODULE_IMPORT_NS("IIO_DRIVER"); -- cgit v1.2.3 From 19d8a8691869463558349327f9aa1ab3788e696e Mon Sep 17 00:00:00 2001 From: Matti Vaittinen Date: Mon, 24 Mar 2025 09:13:28 +0200 Subject: iio: adc: sun20i-gpadc: Use adc-helpers The new devm_iio_adc_device_alloc_chaninfo_se() -helper is intended to help drivers avoid open-coding the for_each_node -loop for getting the channel IDs. The helper provides standard way to detect the ADC channel nodes (by the node name), and a standard way to convert the "reg" -properties to channel identification numbers, used in the struct iio_chan_spec. Furthermore, the helper can optionally check the found channel IDs are smaller than given maximum. This is useful for callers which later use the IDs for example for indexing a channel data array. The original driver treated all found child nodes as channel nodes. The new helper requires channel nodes to be named channel[@N]. This should help avoid problems with devices which may contain also other but ADC child nodes. Quick grep from arch/* with the sun20i-gpadc's compatible string didn't reveal any in-tree .dts with channel nodes named otherwise. Also, same grep shows all the in-tree .dts seem to have channel IDs between 0..num of channels. Use the new helper. Signed-off-by: Matti Vaittinen Reviewed-by: Andy Shevchenko Link: https://patch.msgid.link/e367a803c0d625e60c9fca16c55a25eee06b5a89.1742560649.git.mazziesaccount@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/Kconfig | 1 + drivers/iio/adc/sun20i-gpadc-iio.c | 39 ++++++++++++++------------------------ 2 files changed, 15 insertions(+), 25 deletions(-) diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig index 57ea8cd464ca..5089d95d6a00 100644 --- a/drivers/iio/adc/Kconfig +++ b/drivers/iio/adc/Kconfig @@ -1401,6 +1401,7 @@ config SUN4I_GPADC config SUN20I_GPADC tristate "Allwinner D1/T113s/T507/R329 and similar GPADCs driver" depends on ARCH_SUNXI || COMPILE_TEST + select IIO_ADC_HELPER help Say yes here to build support for Allwinner (D1, T113, T507 and R329) SoCs GPADC. This ADC provides up to 16 channels. diff --git a/drivers/iio/adc/sun20i-gpadc-iio.c b/drivers/iio/adc/sun20i-gpadc-iio.c index 136b8d9c294f..2428ea69d676 100644 --- a/drivers/iio/adc/sun20i-gpadc-iio.c +++ b/drivers/iio/adc/sun20i-gpadc-iio.c @@ -15,6 +15,7 @@ #include #include +#include #include #define SUN20I_GPADC_DRIVER_NAME "sun20i-gpadc" @@ -149,36 +150,23 @@ static void sun20i_gpadc_reset_assert(void *data) reset_control_assert(rst); } +static const struct iio_chan_spec sun20i_gpadc_chan_template = { + .type = IIO_VOLTAGE, + .indexed = 1, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), +}; + static int sun20i_gpadc_alloc_channels(struct iio_dev *indio_dev, struct device *dev) { - unsigned int channel; - int num_channels, i, ret; + int num_channels; struct iio_chan_spec *channels; - num_channels = device_get_child_node_count(dev); - if (num_channels == 0) - return dev_err_probe(dev, -ENODEV, "no channel children\n"); - - channels = devm_kcalloc(dev, num_channels, sizeof(*channels), - GFP_KERNEL); - if (!channels) - return -ENOMEM; - - i = 0; - device_for_each_child_node_scoped(dev, node) { - ret = fwnode_property_read_u32(node, "reg", &channel); - if (ret) - return dev_err_probe(dev, ret, "invalid channel number\n"); - - channels[i].type = IIO_VOLTAGE; - channels[i].indexed = 1; - channels[i].channel = channel; - channels[i].info_mask_separate = BIT(IIO_CHAN_INFO_RAW); - channels[i].info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE); - - i++; - } + num_channels = devm_iio_adc_device_alloc_chaninfo_se(dev, + &sun20i_gpadc_chan_template, -1, &channels); + if (num_channels < 0) + return num_channels; indio_dev->channels = channels; indio_dev->num_channels = num_channels; @@ -271,3 +259,4 @@ module_platform_driver(sun20i_gpadc_driver); MODULE_DESCRIPTION("ADC driver for sunxi platforms"); MODULE_AUTHOR("Maksim Kiselev "); MODULE_LICENSE("GPL"); +MODULE_IMPORT_NS("IIO_DRIVER"); -- cgit v1.2.3 From 3f57a3b9ab74e8b6e00198af86ba41dcffa5509b Mon Sep 17 00:00:00 2001 From: Matti Vaittinen Date: Mon, 24 Mar 2025 09:13:42 +0200 Subject: iio: adc: Support ROHM BD79124 ADC The ROHM BD79124 is a 12-bit, 8-channel, SAR ADC. The ADC supports an automatic measurement mode, with an alarm interrupt for out-of-window measurements. The window is configurable for each channel. The I2C protocol for manual start of the measurement and data reading is somewhat peculiar. It requires the master to do clock stretching after sending the I2C slave-address until the slave has captured the data. Needless to say this is not well suopported by the I2C controllers. Thus do not support the BD79124's manual measurement mode but implement the measurements using automatic measurement mode, relying on the BD79124's ability of storing latest measurements into register. Support also configuring the threshold events for detecting the out-of-window events. The BD79124 keeps asserting IRQ for as long as the measured voltage is out of the configured window. Thus, prevent the user-space from choking on the events and mask the received event for a fixed duration (1 second) when an event is handled. The ADC input pins can be also configured as general purpose outputs. Make those pins which don't have corresponding ADC channel node in the device-tree controllable as GPO. Signed-off-by: Matti Vaittinen Link: https://patch.msgid.link/ca3886c9abcb268ca976e62cd7da28bf5d6e6382.1742560649.git.mazziesaccount@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/Kconfig | 12 + drivers/iio/adc/Makefile | 1 + drivers/iio/adc/rohm-bd79124.c | 1147 ++++++++++++++++++++++++++++++++++++++++ 3 files changed, 1160 insertions(+) create mode 100644 drivers/iio/adc/rohm-bd79124.c diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig index 5089d95d6a00..859c77f40f1d 100644 --- a/drivers/iio/adc/Kconfig +++ b/drivers/iio/adc/Kconfig @@ -1235,6 +1235,18 @@ config RN5T618_ADC This driver can also be built as a module. If so, the module will be called rn5t618-adc. +config ROHM_BD79124 + tristate "Rohm BD79124 ADC driver" + depends on I2C + select REGMAP_I2C + select IIO_ADC_HELPER + help + Say yes here to build support for the ROHM BD79124 ADC. The + ROHM BD79124 is a 12-bit, 8-channel, SAR ADC. The ADC supports + also an automatic measurement mode, with an alarm interrupt for + out-of-window measurements. The window is configurable for each + channel. + config ROCKCHIP_SARADC tristate "Rockchip SARADC driver" depends on ARCH_ROCKCHIP || COMPILE_TEST diff --git a/drivers/iio/adc/Makefile b/drivers/iio/adc/Makefile index 6cd2ec8e2c01..07d4b832c42e 100644 --- a/drivers/iio/adc/Makefile +++ b/drivers/iio/adc/Makefile @@ -112,6 +112,7 @@ obj-$(CONFIG_QCOM_VADC_COMMON) += qcom-vadc-common.o obj-$(CONFIG_RCAR_GYRO_ADC) += rcar-gyroadc.o obj-$(CONFIG_RICHTEK_RTQ6056) += rtq6056.o obj-$(CONFIG_RN5T618_ADC) += rn5t618-adc.o +obj-$(CONFIG_ROHM_BD79124) += rohm-bd79124.o obj-$(CONFIG_ROCKCHIP_SARADC) += rockchip_saradc.o obj-$(CONFIG_RZG2L_ADC) += rzg2l_adc.o obj-$(CONFIG_SC27XX_ADC) += sc27xx_adc.o diff --git a/drivers/iio/adc/rohm-bd79124.c b/drivers/iio/adc/rohm-bd79124.c new file mode 100644 index 000000000000..13673f4347d4 --- /dev/null +++ b/drivers/iio/adc/rohm-bd79124.c @@ -0,0 +1,1147 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * ROHM ADC driver for BD79124 ADC/GPO device + * https://fscdn.rohm.com/en/products/databook/datasheet/ic/data_converter/dac/bd79124muf-c-e.pdf + * + * Copyright (c) 2025, ROHM Semiconductor. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#include +#include +#include + +#define BD79124_I2C_MULTI_READ 0x30 +#define BD79124_I2C_MULTI_WRITE 0x28 +#define BD79124_REG_MAX 0xaf + +#define BD79124_REG_SYSTEM_STATUS 0x00 +#define BD79124_REG_GEN_CFG 0x01 +#define BD79124_REG_OPMODE_CFG 0x04 +#define BD79124_REG_PINCFG 0x05 +#define BD79124_REG_GPO_VAL 0x0B +#define BD79124_REG_SEQ_CFG 0x10 +#define BD79124_REG_MANUAL_CHANNELS 0x11 +#define BD79124_REG_AUTO_CHANNELS 0x12 +#define BD79124_REG_ALERT_CH_SEL 0x14 +#define BD79124_REG_EVENT_FLAG 0x18 +#define BD79124_REG_EVENT_FLAG_HI 0x1a +#define BD79124_REG_EVENT_FLAG_LO 0x1c +#define BD79124_REG_HYSTERESIS_CH0 0x20 +#define BD79124_REG_EVENTCOUNT_CH0 0x22 +#define BD79124_REG_RECENT_CH0_LSB 0xa0 +#define BD79124_REG_RECENT_CH7_MSB 0xaf + +#define BD79124_ADC_BITS 12 + +/* Masks for the BD79124_REG_OPMODE_CFG */ +#define BD79124_MSK_CONV_MODE GENMASK(6, 5) +#define BD79124_CONV_MODE_MANSEQ 0 +#define BD79124_CONV_MODE_AUTO 1 +#define BD79124_MSK_AUTO_INTERVAL GENMASK(1, 0) +#define BD79124_INTERVAL_750_US 0 + +/* Masks for the BD79124_REG_GEN_CFG */ +#define BD79124_MSK_DWC_EN BIT(4) +#define BD79124_MSK_STATS_EN BIT(5) + +/* Masks for the BD79124_REG_SEQ_CFG */ +#define BD79124_MSK_SEQ_START BIT(4) +#define BD79124_MSK_SEQ_MODE GENMASK(1, 0) +#define BD79124_MSK_SEQ_MANUAL 0 +#define BD79124_MSK_SEQ_SEQ 1 + +#define BD79124_MSK_HYSTERESIS GENMASK(3, 0) +#define BD79124_LOW_LIMIT_MIN 0 +#define BD79124_HIGH_LIMIT_MAX GENMASK(11, 0) + +/* + * The high limit, low limit and last measurement result are each stored in + * 2 consequtive registers. 4 bits are in the high bits of the first register + * and 8 bits in the next register. + * + * These macros return the address of the first reg for the given channel. + */ +#define BD79124_GET_HIGH_LIMIT_REG(ch) (BD79124_REG_HYSTERESIS_CH0 + (ch) * 4) +#define BD79124_GET_LOW_LIMIT_REG(ch) (BD79124_REG_EVENTCOUNT_CH0 + (ch) * 4) +#define BD79124_GET_LIMIT_REG(ch, dir) ((dir) == IIO_EV_DIR_RISING ? \ + BD79124_GET_HIGH_LIMIT_REG(ch) : BD79124_GET_LOW_LIMIT_REG(ch)) +#define BD79124_GET_RECENT_RES_REG(ch) (BD79124_REG_RECENT_CH0_LSB + (ch) * 2) + +/* + * The hysteresis for a channel is stored in the same register where the + * 4 bits of high limit reside. + */ +#define BD79124_GET_HYSTERESIS_REG(ch) BD79124_GET_HIGH_LIMIT_REG(ch) + +#define BD79124_MAX_NUM_CHANNELS 8 + +struct bd79124_data { + s64 timestamp; + struct regmap *map; + struct device *dev; + int vmax; + /* + * Keep measurement status so read_raw() knows if the measurement needs + * to be started. + */ + int alarm_monitored[BD79124_MAX_NUM_CHANNELS]; + /* + * The BD79124 does not allow disabling/enabling limit separately for + * one direction only. Hence, we do the disabling by changing the limit + * to maximum/minimum measurable value. This means we need to cache + * the limit in order to maintain it over the time limit is disabled. + */ + u16 alarm_r_limit[BD79124_MAX_NUM_CHANNELS]; + u16 alarm_f_limit[BD79124_MAX_NUM_CHANNELS]; + /* Bitmask of disabled events (for rate limiting) for each channel. */ + int alarm_suppressed[BD79124_MAX_NUM_CHANNELS]; + /* + * The BD79124 is configured to run the measurements in the background. + * This is done for the event monitoring as well as for the read_raw(). + * Protect the measurement starting/stopping using a mutex. + */ + struct mutex mutex; + struct delayed_work alm_enable_work; + struct gpio_chip gc; + u8 gpio_valid_mask; +}; + +static const struct regmap_range bd79124_ro_ranges[] = { + { + .range_min = BD79124_REG_EVENT_FLAG, + .range_max = BD79124_REG_EVENT_FLAG, + }, { + .range_min = BD79124_REG_RECENT_CH0_LSB, + .range_max = BD79124_REG_RECENT_CH7_MSB, + }, +}; + +static const struct regmap_access_table bd79124_ro_regs = { + .no_ranges = &bd79124_ro_ranges[0], + .n_no_ranges = ARRAY_SIZE(bd79124_ro_ranges), +}; + +static const struct regmap_range bd79124_volatile_ranges[] = { + { + .range_min = BD79124_REG_RECENT_CH0_LSB, + .range_max = BD79124_REG_RECENT_CH7_MSB, + }, { + .range_min = BD79124_REG_EVENT_FLAG, + .range_max = BD79124_REG_EVENT_FLAG, + }, { + .range_min = BD79124_REG_EVENT_FLAG_HI, + .range_max = BD79124_REG_EVENT_FLAG_HI, + }, { + .range_min = BD79124_REG_EVENT_FLAG_LO, + .range_max = BD79124_REG_EVENT_FLAG_LO, + }, { + .range_min = BD79124_REG_SYSTEM_STATUS, + .range_max = BD79124_REG_SYSTEM_STATUS, + }, +}; + +static const struct regmap_access_table bd79124_volatile_regs = { + .yes_ranges = &bd79124_volatile_ranges[0], + .n_yes_ranges = ARRAY_SIZE(bd79124_volatile_ranges), +}; + +static const struct regmap_range bd79124_precious_ranges[] = { + { + .range_min = BD79124_REG_EVENT_FLAG_HI, + .range_max = BD79124_REG_EVENT_FLAG_HI, + }, { + .range_min = BD79124_REG_EVENT_FLAG_LO, + .range_max = BD79124_REG_EVENT_FLAG_LO, + }, +}; + +static const struct regmap_access_table bd79124_precious_regs = { + .yes_ranges = &bd79124_precious_ranges[0], + .n_yes_ranges = ARRAY_SIZE(bd79124_precious_ranges), +}; + +static const struct regmap_config bd79124_regmap = { + .reg_bits = 16, + .val_bits = 8, + .read_flag_mask = BD79124_I2C_MULTI_READ, + .write_flag_mask = BD79124_I2C_MULTI_WRITE, + .max_register = BD79124_REG_MAX, + .cache_type = REGCACHE_MAPLE, + .volatile_table = &bd79124_volatile_regs, + .wr_table = &bd79124_ro_regs, + .precious_table = &bd79124_precious_regs, +}; + +static int bd79124gpo_direction_get(struct gpio_chip *gc, unsigned int offset) +{ + return GPIO_LINE_DIRECTION_OUT; +} + +static void bd79124gpo_set(struct gpio_chip *gc, unsigned int offset, int value) +{ + struct bd79124_data *data = gpiochip_get_data(gc); + + regmap_assign_bits(data->map, BD79124_REG_GPO_VAL, BIT(offset), value); +} + +static void bd79124gpo_set_multiple(struct gpio_chip *gc, unsigned long *mask, + unsigned long *bits) +{ + unsigned int all_gpos, set_gpos; + int ret; + struct bd79124_data *data = gpiochip_get_data(gc); + + /* + * Ensure all GPIOs in 'mask' are set to be GPIOs + * The valid_mask was not obeyed by the gpiolib in all cases prior the + * https://lore.kernel.org/all/cd5e067b80e1bb590027bc3bfa817e7f794f21c3.1741180097.git.mazziesaccount@gmail.com/ + * + * Keep this check here for a couple of cycles. + */ + ret = regmap_read(data->map, BD79124_REG_PINCFG, &all_gpos); + if (ret) + return; + + if (all_gpos ^ *mask) { + dev_dbg(data->dev, "Invalid mux config. Can't set value.\n"); + /* Do not set value for pins configured as ADC inputs */ + set_gpos = *mask & all_gpos; + } else { + set_gpos = *mask; + } + + regmap_update_bits(data->map, BD79124_REG_GPO_VAL, set_gpos, *bits); +} + +static int bd79124_init_valid_mask(struct gpio_chip *gc, + unsigned long *valid_mask, + unsigned int ngpios) +{ + struct bd79124_data *data = gpiochip_get_data(gc); + + *valid_mask = data->gpio_valid_mask; + + return 0; +} + +/* Template for GPIO chip */ +static const struct gpio_chip bd79124gpo_chip = { + .label = "bd79124-gpo", + .get_direction = bd79124gpo_direction_get, + .set = bd79124gpo_set, + .set_multiple = bd79124gpo_set_multiple, + .init_valid_mask = bd79124_init_valid_mask, + .can_sleep = true, + .ngpio = 8, + .base = -1, +}; + +struct bd79124_raw { + u8 val_bit3_0; /* Is set in high bits of the byte */ + u8 val_bit11_4; +}; +#define BD79124_RAW_TO_INT(r) ((r.val_bit11_4 << 4) | (r.val_bit3_0 >> 4)) +#define BD79124_INT_TO_RAW(val) { \ + .val_bit11_4 = (val) >> 4, \ + .val_bit3_0 = (val) << 4, \ +} + +/* + * The high and low limits as well as the recent result values are stored in + * the same way in 2 consequent registers. The first register contains 4 bits + * of the value. These bits are stored in the high bits [7:4] of register, but + * they represent the low bits [3:0] of the value. + * The value bits [11:4] are stored in the next register. + * + * Read data from register and convert to integer. + */ +static int bd79124_read_reg_to_int(struct bd79124_data *data, int reg, + unsigned int *val) +{ + int ret; + struct bd79124_raw raw; + + ret = regmap_bulk_read(data->map, reg, &raw, sizeof(raw)); + if (ret) { + dev_dbg(data->dev, "bulk_read failed %d\n", ret); + + return ret; + } + + *val = BD79124_RAW_TO_INT(raw); + + return 0; +} + +/* + * The high and low limits as well as the recent result values are stored in + * the same way in 2 consequent registers. The first register contains 4 bits + * of the value. These bits are stored in the high bits [7:4] of register, but + * they represent the low bits [3:0] of the value. + * The value bits [11:4] are stored in the next register. + * + * Convert the integer to register format and write it using rmw cycle. + */ +static int bd79124_write_int_to_reg(struct bd79124_data *data, int reg, + unsigned int val) +{ + struct bd79124_raw raw = BD79124_INT_TO_RAW(val); + unsigned int tmp; + int ret; + + ret = regmap_read(data->map, reg, &tmp); + if (ret) + return ret; + + raw.val_bit3_0 |= (tmp & 0xf); + + return regmap_bulk_write(data->map, reg, &raw, sizeof(raw)); +} + +static const struct iio_event_spec bd79124_events[] = { + { + .type = IIO_EV_TYPE_THRESH, + .dir = IIO_EV_DIR_RISING, + .mask_separate = BIT(IIO_EV_INFO_VALUE) | + BIT(IIO_EV_INFO_ENABLE), + }, + { + .type = IIO_EV_TYPE_THRESH, + .dir = IIO_EV_DIR_FALLING, + .mask_separate = BIT(IIO_EV_INFO_VALUE) | + BIT(IIO_EV_INFO_ENABLE), + }, + { + .type = IIO_EV_TYPE_THRESH, + .dir = IIO_EV_DIR_EITHER, + .mask_separate = BIT(IIO_EV_INFO_HYSTERESIS), + }, +}; + +static const struct iio_chan_spec bd79124_chan_template_noirq = { + .type = IIO_VOLTAGE, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), + .indexed = 1, +}; + +static const struct iio_chan_spec bd79124_chan_template = { + .type = IIO_VOLTAGE, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), + .indexed = 1, + .event_spec = bd79124_events, + .num_event_specs = ARRAY_SIZE(bd79124_events), +}; + +static int bd79124_read_event_value(struct iio_dev *iio_dev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir, + enum iio_event_info info, int *val, + int *val2) +{ + struct bd79124_data *data = iio_priv(iio_dev); + int ret, reg; + + if (chan->channel >= BD79124_MAX_NUM_CHANNELS) + return -EINVAL; + + switch (info) { + case IIO_EV_INFO_VALUE: + if (dir == IIO_EV_DIR_RISING) + *val = data->alarm_r_limit[chan->channel]; + else if (dir == IIO_EV_DIR_FALLING) + *val = data->alarm_f_limit[chan->channel]; + else + return -EINVAL; + + return IIO_VAL_INT; + + case IIO_EV_INFO_HYSTERESIS: + reg = BD79124_GET_HYSTERESIS_REG(chan->channel); + ret = regmap_read(data->map, reg, val); + if (ret) + return ret; + + *val &= BD79124_MSK_HYSTERESIS; + /* + * The data-sheet says the hysteresis register value needs to be + * shifted left by 3. + */ + *val <<= 3; + + return IIO_VAL_INT; + + default: + return -EINVAL; + } +} + +static int bd79124_start_measurement(struct bd79124_data *data, int chan) +{ + unsigned int val, regval; + int ret; + + /* See if already started */ + ret = regmap_read(data->map, BD79124_REG_AUTO_CHANNELS, &val); + if (val & BIT(chan)) + return 0; + + /* + * The sequencer must be stopped when channels are added/removed from + * the list of the measured channels to ensure the new channel + * configuration is used. + */ + ret = regmap_clear_bits(data->map, BD79124_REG_SEQ_CFG, + BD79124_MSK_SEQ_START); + if (ret) + return ret; + + ret = regmap_write(data->map, BD79124_REG_AUTO_CHANNELS, val | BIT(chan)); + if (ret) + return ret; + + ret = regmap_set_bits(data->map, BD79124_REG_SEQ_CFG, + BD79124_MSK_SEQ_START); + if (ret) + return ret; + + /* + * Start the measurement at the background. Don't bother checking if + * it was started, regmap has cache. + */ + regval = FIELD_PREP(BD79124_MSK_CONV_MODE, BD79124_CONV_MODE_AUTO); + + return regmap_update_bits(data->map, BD79124_REG_OPMODE_CFG, + BD79124_MSK_CONV_MODE, regval); +} + +static int bd79124_stop_measurement(struct bd79124_data *data, int chan) +{ + unsigned int enabled_chans; + int ret; + + /* See if already stopped */ + ret = regmap_read(data->map, BD79124_REG_AUTO_CHANNELS, &enabled_chans); + if (!(enabled_chans & BIT(chan))) + return 0; + + ret = regmap_clear_bits(data->map, BD79124_REG_SEQ_CFG, + BD79124_MSK_SEQ_START); + + /* Clear the channel from the measured channels */ + enabled_chans &= ~BIT(chan); + ret = regmap_write(data->map, BD79124_REG_AUTO_CHANNELS, + enabled_chans); + if (ret) + return ret; + + /* + * Stop background conversion for power saving if it was the last + * channel. + */ + if (!enabled_chans) { + int regval = FIELD_PREP(BD79124_MSK_CONV_MODE, + BD79124_CONV_MODE_MANSEQ); + + ret = regmap_update_bits(data->map, BD79124_REG_OPMODE_CFG, + BD79124_MSK_CONV_MODE, regval); + if (ret) + return ret; + } + + return regmap_set_bits(data->map, BD79124_REG_SEQ_CFG, + BD79124_MSK_SEQ_START); +} + +static int bd79124_read_event_config(struct iio_dev *iio_dev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir) +{ + struct bd79124_data *data = iio_priv(iio_dev); + + if (chan->channel >= BD79124_MAX_NUM_CHANNELS) + return -EINVAL; + + return !!(data->alarm_monitored[chan->channel] & BIT(dir)); +} + +static int bd79124_disable_event(struct bd79124_data *data, + enum iio_event_direction dir, int channel) +{ + int dir_bit = BIT(dir); + int reg; + unsigned int limit; + + guard(mutex)(&data->mutex); + + /* + * Set thresholds either to 0 or to 2^12 - 1 as appropriate to prevent + * alerts and thus disable event generation. + */ + if (dir == IIO_EV_DIR_RISING) { + reg = BD79124_GET_HIGH_LIMIT_REG(channel); + limit = BD79124_HIGH_LIMIT_MAX; + } else if (dir == IIO_EV_DIR_FALLING) { + reg = BD79124_GET_LOW_LIMIT_REG(channel); + limit = BD79124_LOW_LIMIT_MIN; + } else { + return -EINVAL; + } + + data->alarm_monitored[channel] &= ~dir_bit; + + /* + * Stop measurement if there is no more events to monitor. + * We don't bother checking the retval because the limit + * setting should in any case effectively disable the alarm. + */ + if (!data->alarm_monitored[channel]) { + bd79124_stop_measurement(data, channel); + regmap_clear_bits(data->map, BD79124_REG_ALERT_CH_SEL, + BIT(channel)); + } + + return bd79124_write_int_to_reg(data, reg, limit); +} + +static int bd79124_enable_event(struct bd79124_data *data, + enum iio_event_direction dir, + unsigned int channel) +{ + int dir_bit = BIT(dir); + int reg, ret; + u16 *limit; + + guard(mutex)(&data->mutex); + ret = bd79124_start_measurement(data, channel); + if (ret) + return ret; + + data->alarm_monitored[channel] |= dir_bit; + + /* Add the channel to the list of monitored channels */ + ret = regmap_set_bits(data->map, BD79124_REG_ALERT_CH_SEL, BIT(channel)); + if (ret) + return ret; + + if (dir == IIO_EV_DIR_RISING) { + limit = &data->alarm_f_limit[channel]; + reg = BD79124_GET_HIGH_LIMIT_REG(channel); + } else { + limit = &data->alarm_f_limit[channel]; + reg = BD79124_GET_LOW_LIMIT_REG(channel); + } + /* + * Don't write the new limit to the hardware if we are in the + * rate-limit period. The timer which re-enables the event will set + * the limit. + */ + if (!(data->alarm_suppressed[channel] & dir_bit)) { + ret = bd79124_write_int_to_reg(data, reg, *limit); + if (ret) + return ret; + } + + /* + * Enable comparator. Trust the regmap cache, no need to check + * if it was already enabled. + * + * We could do this in the hw-init, but there may be users who + * never enable alarms and for them it makes sense to not + * enable the comparator at probe. + */ + return regmap_set_bits(data->map, BD79124_REG_GEN_CFG, + BD79124_MSK_DWC_EN); +} + +static int bd79124_write_event_config(struct iio_dev *iio_dev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir, bool state) +{ + struct bd79124_data *data = iio_priv(iio_dev); + + if (chan->channel >= BD79124_MAX_NUM_CHANNELS) + return -EINVAL; + + if (state) + return bd79124_enable_event(data, dir, chan->channel); + + return bd79124_disable_event(data, dir, chan->channel); +} + +static int bd79124_write_event_value(struct iio_dev *iio_dev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir, + enum iio_event_info info, int val, + int val2) +{ + struct bd79124_data *data = iio_priv(iio_dev); + int reg; + + if (chan->channel >= BD79124_MAX_NUM_CHANNELS) + return -EINVAL; + + switch (info) { + case IIO_EV_INFO_VALUE: + { + guard(mutex)(&data->mutex); + + if (dir == IIO_EV_DIR_RISING) { + data->alarm_r_limit[chan->channel] = val; + reg = BD79124_GET_HIGH_LIMIT_REG(chan->channel); + } else if (dir == IIO_EV_DIR_FALLING) { + data->alarm_f_limit[chan->channel] = val; + reg = BD79124_GET_LOW_LIMIT_REG(chan->channel); + } else { + return -EINVAL; + } + /* + * We don't want to enable the alarm if it is not enabled or + * if it is suppressed. In that case skip writing to the + * register. + */ + if (!(data->alarm_monitored[chan->channel] & BIT(dir)) || + data->alarm_suppressed[chan->channel] & BIT(dir)) + return 0; + + return bd79124_write_int_to_reg(data, reg, val); + } + case IIO_EV_INFO_HYSTERESIS: + reg = BD79124_GET_HYSTERESIS_REG(chan->channel); + val >>= 3; + + return regmap_update_bits(data->map, reg, BD79124_MSK_HYSTERESIS, + val); + default: + return -EINVAL; + } +} + +static int bd79124_single_chan_seq(struct bd79124_data *data, int chan, unsigned int *old) +{ + int ret; + + ret = regmap_clear_bits(data->map, BD79124_REG_SEQ_CFG, + BD79124_MSK_SEQ_START); + if (ret) + return ret; + + /* + * It may be we have some channels monitored for alarms so we want to + * cache the old config and return it when the single channel + * measurement has been completed. + */ + ret = regmap_read(data->map, BD79124_REG_AUTO_CHANNELS, old); + if (ret) + return ret; + + ret = regmap_write(data->map, BD79124_REG_AUTO_CHANNELS, BIT(chan)); + if (ret) + return ret; + + /* Restart the sequencer */ + return regmap_set_bits(data->map, BD79124_REG_SEQ_CFG, + BD79124_MSK_SEQ_START); +} + +static int bd79124_single_chan_seq_end(struct bd79124_data *data, unsigned int old) +{ + int ret; + + ret = regmap_clear_bits(data->map, BD79124_REG_SEQ_CFG, + BD79124_MSK_SEQ_START); + if (ret) + return ret; + + ret = regmap_write(data->map, BD79124_REG_AUTO_CHANNELS, old); + if (ret) + return ret; + + return regmap_set_bits(data->map, BD79124_REG_SEQ_CFG, + BD79124_MSK_SEQ_START); +} + +static int bd79124_read_raw(struct iio_dev *iio_dev, + struct iio_chan_spec const *chan, + int *val, int *val2, long m) +{ + struct bd79124_data *data = iio_priv(iio_dev); + int ret; + + if (chan->channel >= BD79124_MAX_NUM_CHANNELS) + return -EINVAL; + + switch (m) { + case IIO_CHAN_INFO_RAW: + { + unsigned int old_chan_cfg, regval; + int tmp; + + guard(mutex)(&data->mutex); + + /* + * Start the automatic conversion. This is needed here if no + * events have been enabled. + */ + regval = FIELD_PREP(BD79124_MSK_CONV_MODE, + BD79124_CONV_MODE_AUTO); + ret = regmap_update_bits(data->map, BD79124_REG_OPMODE_CFG, + BD79124_MSK_CONV_MODE, regval); + if (ret) + return ret; + + ret = bd79124_single_chan_seq(data, chan->channel, &old_chan_cfg); + if (ret) + return ret; + + /* The maximum conversion time is 6 uS. */ + udelay(6); + + ret = bd79124_read_reg_to_int(data, + BD79124_GET_RECENT_RES_REG(chan->channel), val); + /* + * Return the old chan config even if data reading failed in + * order to re-enable the event monitoring. + */ + tmp = bd79124_single_chan_seq_end(data, old_chan_cfg); + if (tmp) + dev_err(data->dev, + "Failed to return config. Alarms may be disabled\n"); + + if (ret) + return ret; + + return IIO_VAL_INT; + } + case IIO_CHAN_INFO_SCALE: + *val = data->vmax / 1000; + *val2 = BD79124_ADC_BITS; + return IIO_VAL_FRACTIONAL_LOG2; + default: + return -EINVAL; + } +} + +static const struct iio_info bd79124_info = { + .read_raw = bd79124_read_raw, + .read_event_config = &bd79124_read_event_config, + .write_event_config = &bd79124_write_event_config, + .read_event_value = &bd79124_read_event_value, + .write_event_value = &bd79124_write_event_value, +}; + +static void bd79124_re_enable_lo(struct bd79124_data *data, unsigned int channel) +{ + int ret, evbit = BIT(IIO_EV_DIR_FALLING); + + /* + * We should not re-enable the event if user has disabled it while + * rate-limiting was enabled. + */ + if (!(data->alarm_suppressed[channel] & evbit)) + return; + + data->alarm_suppressed[channel] &= ~evbit; + + if (!(data->alarm_monitored[channel] & evbit)) + return; + + ret = bd79124_write_int_to_reg(data, BD79124_GET_LOW_LIMIT_REG(channel), + data->alarm_f_limit[channel]); + if (ret) + dev_warn(data->dev, "Low limit enabling failed for channel%d\n", + channel); +} + +static void bd79124_re_enable_hi(struct bd79124_data *data, unsigned int channel) +{ + int ret, evbit = BIT(IIO_EV_DIR_RISING); + + /* + * We should not re-enable the event if user has disabled it while + * rate-limiting was enabled. + */ + if (!(data->alarm_suppressed[channel] & evbit)) + return; + + data->alarm_suppressed[channel] &= ~evbit; + + if (!(data->alarm_monitored[channel] & evbit)) + return; + + ret = bd79124_write_int_to_reg(data, BD79124_GET_HIGH_LIMIT_REG(channel), + data->alarm_r_limit[channel]); + if (ret) + dev_warn(data->dev, "High limit enabling failed for channel%d\n", + channel); +} + +static void bd79124_alm_enable_worker(struct work_struct *work) +{ + int i; + struct bd79124_data *data = container_of(work, struct bd79124_data, + alm_enable_work.work); + + /* Take the mutex so there is no race with user disabling the alarm */ + guard(mutex)(&data->mutex); + for (i = 0; i < BD79124_MAX_NUM_CHANNELS; i++) { + bd79124_re_enable_hi(data, i); + bd79124_re_enable_lo(data, i); + } +} + +static int __bd79124_event_ratelimit(struct bd79124_data *data, int reg, + unsigned int limit) +{ + int ret; + + if (limit > BD79124_HIGH_LIMIT_MAX) + return -EINVAL; + + ret = bd79124_write_int_to_reg(data, reg, limit); + if (ret) + return ret; + + /* + * We use 1 sec 'grace period'. At the moment I see no reason to make + * this user configurable. We need an ABI for this if configuration is + * needed. + */ + schedule_delayed_work(&data->alm_enable_work, msecs_to_jiffies(1000)); + + return 0; +} + +static int bd79124_event_ratelimit_hi(struct bd79124_data *data, + unsigned int channel) +{ + guard(mutex)(&data->mutex); + data->alarm_suppressed[channel] |= BIT(IIO_EV_DIR_RISING); + + return __bd79124_event_ratelimit(data, + BD79124_GET_HIGH_LIMIT_REG(channel), + BD79124_HIGH_LIMIT_MAX); +} + +static int bd79124_event_ratelimit_lo(struct bd79124_data *data, + unsigned int channel) +{ + guard(mutex)(&data->mutex); + data->alarm_suppressed[channel] |= BIT(IIO_EV_DIR_FALLING); + + return __bd79124_event_ratelimit(data, + BD79124_GET_LOW_LIMIT_REG(channel), + BD79124_LOW_LIMIT_MIN); +} + +static irqreturn_t bd79124_event_handler(int irq, void *priv) +{ + unsigned int i_hi, i_lo; + int i, ret; + struct iio_dev *iio_dev = priv; + struct bd79124_data *data = iio_priv(iio_dev); + + /* + * Return IRQ_NONE if bailing-out without acking. This allows the IRQ + * subsystem to disable the offending IRQ line if we get a hardware + * problem. This behaviour has saved my poor bottom a few times in the + * past as, instead of getting unusably unresponsive, the system has + * spilled out the magic words "...nobody cared". + */ + ret = regmap_read(data->map, BD79124_REG_EVENT_FLAG_HI, &i_hi); + if (ret) + return IRQ_NONE; + + ret = regmap_read(data->map, BD79124_REG_EVENT_FLAG_LO, &i_lo); + if (ret) + return IRQ_NONE; + + if (!i_lo && !i_hi) + return IRQ_NONE; + + for (i = 0; i < BD79124_MAX_NUM_CHANNELS; i++) { + u64 ecode; + + if (BIT(i) & i_hi) { + ecode = IIO_UNMOD_EVENT_CODE(IIO_VOLTAGE, i, + IIO_EV_TYPE_THRESH, + IIO_EV_DIR_RISING); + + iio_push_event(iio_dev, ecode, data->timestamp); + /* + * The BD79124 keeps the IRQ asserted for as long as + * the voltage exceeds the threshold. It causes the IRQ + * to keep firing. + * + * Disable the event for the channel and schedule the + * re-enabling the event later to prevent storm of + * events. + */ + ret = bd79124_event_ratelimit_hi(data, i); + if (ret) + return IRQ_NONE; + } + if (BIT(i) & i_lo) { + ecode = IIO_UNMOD_EVENT_CODE(IIO_VOLTAGE, i, + IIO_EV_TYPE_THRESH, + IIO_EV_DIR_FALLING); + + iio_push_event(iio_dev, ecode, data->timestamp); + ret = bd79124_event_ratelimit_lo(data, i); + if (ret) + return IRQ_NONE; + } + } + + ret = regmap_write(data->map, BD79124_REG_EVENT_FLAG_HI, i_hi); + if (ret) + return IRQ_NONE; + + ret = regmap_write(data->map, BD79124_REG_EVENT_FLAG_LO, i_lo); + if (ret) + return IRQ_NONE; + + return IRQ_HANDLED; +} + +static irqreturn_t bd79124_irq_handler(int irq, void *priv) +{ + struct iio_dev *iio_dev = priv; + struct bd79124_data *data = iio_priv(iio_dev); + + data->timestamp = iio_get_time_ns(iio_dev); + + return IRQ_WAKE_THREAD; +} + +static int bd79124_chan_init(struct bd79124_data *data, int channel) +{ + int ret; + + ret = regmap_write(data->map, BD79124_GET_HIGH_LIMIT_REG(channel), + BD79124_HIGH_LIMIT_MAX); + if (ret) + return ret; + + return regmap_write(data->map, BD79124_GET_LOW_LIMIT_REG(channel), + BD79124_LOW_LIMIT_MIN); +} + +static int bd79124_get_gpio_pins(const struct iio_chan_spec *cs, int num_channels) +{ + int i, gpio_channels; + + /* + * Let's initialize the mux config to say that all 8 channels are + * GPIOs. Then we can just loop through the iio_chan_spec and clear the + * bits for found ADC channels. + */ + gpio_channels = GENMASK(7, 0); + for (i = 0; i < num_channels; i++) + gpio_channels &= ~BIT(cs[i].channel); + + return gpio_channels; +} + +static int bd79124_hw_init(struct bd79124_data *data) +{ + unsigned int regval; + int ret, i; + + for (i = 0; i < BD79124_MAX_NUM_CHANNELS; i++) { + ret = bd79124_chan_init(data, i); + if (ret) + return ret; + data->alarm_r_limit[i] = BD79124_HIGH_LIMIT_MAX; + } + /* Stop auto sequencer */ + ret = regmap_clear_bits(data->map, BD79124_REG_SEQ_CFG, + BD79124_MSK_SEQ_START); + if (ret) + return ret; + + /* Enable writing the measured values to the regsters */ + ret = regmap_set_bits(data->map, BD79124_REG_GEN_CFG, + BD79124_MSK_STATS_EN); + if (ret) + return ret; + + /* Set no channels to be auto-measured */ + ret = regmap_write(data->map, BD79124_REG_AUTO_CHANNELS, 0x0); + if (ret) + return ret; + + /* Set no channels to be manually measured */ + ret = regmap_write(data->map, BD79124_REG_MANUAL_CHANNELS, 0x0); + if (ret) + return ret; + + regval = FIELD_PREP(BD79124_MSK_AUTO_INTERVAL, BD79124_INTERVAL_750_US); + ret = regmap_update_bits(data->map, BD79124_REG_OPMODE_CFG, + BD79124_MSK_AUTO_INTERVAL, regval); + if (ret) + return ret; + + /* Sequencer mode to auto */ + ret = regmap_set_bits(data->map, BD79124_REG_SEQ_CFG, + BD79124_MSK_SEQ_SEQ); + if (ret) + return ret; + + /* Don't start the measurement */ + regval = FIELD_PREP(BD79124_MSK_CONV_MODE, BD79124_CONV_MODE_MANSEQ); + return regmap_update_bits(data->map, BD79124_REG_OPMODE_CFG, + BD79124_MSK_CONV_MODE, regval); +} + +static int bd79124_probe(struct i2c_client *i2c) +{ + struct bd79124_data *data; + struct iio_dev *iio_dev; + const struct iio_chan_spec *template; + struct iio_chan_spec *cs; + struct device *dev = &i2c->dev; + unsigned int gpio_pins; + int ret; + + iio_dev = devm_iio_device_alloc(dev, sizeof(*data)); + if (!iio_dev) + return -ENOMEM; + + data = iio_priv(iio_dev); + data->dev = dev; + data->map = devm_regmap_init_i2c(i2c, &bd79124_regmap); + if (IS_ERR(data->map)) + return dev_err_probe(dev, PTR_ERR(data->map), + "Failed to initialize Regmap\n"); + + ret = devm_regulator_get_enable_read_voltage(dev, "vdd"); + if (ret < 0) + return dev_err_probe(dev, ret, "Failed to get the Vdd\n"); + + data->vmax = ret; + + ret = devm_regulator_get_enable(dev, "iovdd"); + if (ret < 0) + return dev_err_probe(dev, ret, "Failed to enable I/O voltage\n"); + + ret = devm_delayed_work_autocancel(dev, &data->alm_enable_work, + bd79124_alm_enable_worker); + if (ret) + return ret; + + if (i2c->irq) { + template = &bd79124_chan_template; + } else { + template = &bd79124_chan_template_noirq; + dev_dbg(dev, "No IRQ found, events disabled\n"); + } + + ret = devm_mutex_init(dev, &data->mutex); + if (ret) + return ret; + + ret = devm_iio_adc_device_alloc_chaninfo_se(dev, template, + BD79124_MAX_NUM_CHANNELS - 1, &cs); + if (ret < 0) { + /* Register all pins as GPOs if there are no ADC channels */ + if (ret == -ENOENT) + goto register_gpios; + return ret; + } + iio_dev->channels = cs; + iio_dev->num_channels = ret; + iio_dev->info = &bd79124_info; + iio_dev->name = "bd79124"; + iio_dev->modes = INDIO_DIRECT_MODE; + + ret = bd79124_hw_init(data); + if (ret) + return ret; + + if (i2c->irq > 0) { + ret = devm_request_threaded_irq(dev, i2c->irq, + bd79124_irq_handler, &bd79124_event_handler, + IRQF_ONESHOT, "adc-thresh-alert", iio_dev); + if (ret) + return dev_err_probe(data->dev, ret, + "Failed to register IRQ\n"); + } + + ret = devm_iio_device_register(data->dev, iio_dev); + if (ret) + return dev_err_probe(data->dev, ret, "Failed to register ADC\n"); + +register_gpios: + gpio_pins = bd79124_get_gpio_pins(iio_dev->channels, + iio_dev->num_channels); + + /* + * The mux should default to "all ADCs", but better to not trust it. + * Thus we do set the mux even when we have only ADCs and no GPOs. + */ + ret = regmap_write(data->map, BD79124_REG_PINCFG, gpio_pins); + if (ret) + return ret; + + /* No GPOs if all channels are reserved for ADC, so we're done. */ + if (!gpio_pins) + return 0; + + data->gpio_valid_mask = gpio_pins; + data->gc = bd79124gpo_chip; + data->gc.parent = dev; + + return devm_gpiochip_add_data(dev, &data->gc, data); +} + +static const struct of_device_id bd79124_of_match[] = { + { .compatible = "rohm,bd79124" }, + { } +}; +MODULE_DEVICE_TABLE(of, bd79124_of_match); + +static const struct i2c_device_id bd79124_id[] = { + { "bd79124" }, + { } +}; +MODULE_DEVICE_TABLE(i2c, bd79124_id); + +static struct i2c_driver bd79124_driver = { + .driver = { + .name = "bd79124", + .of_match_table = bd79124_of_match, + }, + .probe = bd79124_probe, + .id_table = bd79124_id, +}; +module_i2c_driver(bd79124_driver); + +MODULE_AUTHOR("Matti Vaittinen "); +MODULE_DESCRIPTION("Driver for ROHM BD79124 ADC"); +MODULE_LICENSE("GPL"); +MODULE_IMPORT_NS("IIO_DRIVER"); -- cgit v1.2.3 From 96f0f0e3aca4925917be32a69367fad2e18a24bc Mon Sep 17 00:00:00 2001 From: Matti Vaittinen Date: Mon, 24 Mar 2025 09:13:56 +0200 Subject: MAINTAINERS: Add IIO ADC helpers Add undersigned as a maintainer for the IIO ADC helpers. Signed-off-by: Matti Vaittinen Link: https://patch.msgid.link/1263c954cfb74223f322a9c31bd57f13d5516680.1742560649.git.mazziesaccount@gmail.com Signed-off-by: Jonathan Cameron --- MAINTAINERS | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index 96b827049501..b8826d37b803 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -11465,6 +11465,13 @@ L: linux-media@vger.kernel.org S: Maintained F: drivers/media/rc/iguanair.c +IIO ADC HELPERS +M: Matti Vaittinen +L: linux-iio@vger.kernel.org +S: Maintained +F: drivers/iio/adc/industrialio-adc.c +F: include/linux/iio/adc-helpers.h + IIO BACKEND FRAMEWORK M: Nuno Sa R: Olivier Moysan -- cgit v1.2.3 From d9848cb632cea0c85eb60cf1b98b342256e97f15 Mon Sep 17 00:00:00 2001 From: Matti Vaittinen Date: Mon, 24 Mar 2025 09:14:09 +0200 Subject: MAINTAINERS: Add ROHM BD79124 ADC/GPO Add undersigned as a maintainer for the ROHM BD79124 ADC/GPO driver. Signed-off-by: Matti Vaittinen Link: https://patch.msgid.link/fa3b65599592c1685230a5fa95aea6ed12b0b504.1742560649.git.mazziesaccount@gmail.com Signed-off-by: Jonathan Cameron --- MAINTAINERS | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index b8826d37b803..82f71f0e6143 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -20948,6 +20948,11 @@ S: Supported F: drivers/power/supply/bd99954-charger.c F: drivers/power/supply/bd99954-charger.h +ROHM BD79124 ADC / GPO IC +M: Matti Vaittinen +S: Supported +F: drivers/iio/adc/rohm-bd79124.c + ROHM BH1745 COLOUR SENSOR M: Mudit Sharma L: linux-iio@vger.kernel.org -- cgit v1.2.3 From 3c8fd200a731ec84d2f158fb6316fa6c18f165f3 Mon Sep 17 00:00:00 2001 From: Angelo Dureghello Date: Wed, 19 Mar 2025 16:45:31 +0100 Subject: iio: dac: ad3552r-hs: add debugfs reg access MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add debugfs register access. Reviewed-by: Nuno Sá Signed-off-by: Angelo Dureghello Reviewed-by: David Lechner Link: https://patch.msgid.link/20250319-wip-bl-ad3552r-fixes-v3-1-9975b38c0082@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/dac/ad3552r-common.c | 4 ++++ drivers/iio/dac/ad3552r-hs.c | 20 ++++++++++++++++++++ drivers/iio/dac/ad3552r.h | 1 + 3 files changed, 25 insertions(+) diff --git a/drivers/iio/dac/ad3552r-common.c b/drivers/iio/dac/ad3552r-common.c index b8807e54fa05..38baaea0e6c8 100644 --- a/drivers/iio/dac/ad3552r-common.c +++ b/drivers/iio/dac/ad3552r-common.c @@ -43,6 +43,7 @@ const struct ad3552r_model_data ad3541r_model_data = { .num_ranges = ARRAY_SIZE(ad3542r_ch_ranges), .requires_output_range = true, .num_spi_data_lanes = 2, + .max_reg_addr = 0x46, }; EXPORT_SYMBOL_NS_GPL(ad3541r_model_data, "IIO_AD3552R"); @@ -54,6 +55,7 @@ const struct ad3552r_model_data ad3542r_model_data = { .num_ranges = ARRAY_SIZE(ad3542r_ch_ranges), .requires_output_range = true, .num_spi_data_lanes = 2, + .max_reg_addr = 0x49, }; EXPORT_SYMBOL_NS_GPL(ad3542r_model_data, "IIO_AD3552R"); @@ -65,6 +67,7 @@ const struct ad3552r_model_data ad3551r_model_data = { .num_ranges = ARRAY_SIZE(ad3552r_ch_ranges), .requires_output_range = false, .num_spi_data_lanes = 4, + .max_reg_addr = 0x46, }; EXPORT_SYMBOL_NS_GPL(ad3551r_model_data, "IIO_AD3552R"); @@ -76,6 +79,7 @@ const struct ad3552r_model_data ad3552r_model_data = { .num_ranges = ARRAY_SIZE(ad3552r_ch_ranges), .requires_output_range = false, .num_spi_data_lanes = 4, + .max_reg_addr = 0x49, }; EXPORT_SYMBOL_NS_GPL(ad3552r_model_data, "IIO_AD3552R"); diff --git a/drivers/iio/dac/ad3552r-hs.c b/drivers/iio/dac/ad3552r-hs.c index cd8dabb60c55..37397e188f22 100644 --- a/drivers/iio/dac/ad3552r-hs.c +++ b/drivers/iio/dac/ad3552r-hs.c @@ -464,6 +464,25 @@ static int ad3552r_hs_setup_custom_gain(struct ad3552r_hs_state *st, gain, 1); } +static int ad3552r_hs_reg_access(struct iio_dev *indio_dev, unsigned int reg, + unsigned int writeval, unsigned int *readval) +{ + struct ad3552r_hs_state *st = iio_priv(indio_dev); + + if (reg > st->model_data->max_reg_addr) + return -EINVAL; + + /* + * There are 8, 16 or 24 bit registers, but HDL supports only reading 8 + * or 16 bit data, not 24. So, also to avoid to check any proper read + * alignment, supporting only 8-bit readings here. + */ + if (readval) + return ad3552r_hs_reg_read(st, reg, readval, 1); + + return st->data->bus_reg_write(st->back, reg, writeval, 1); +} + static int ad3552r_hs_setup(struct ad3552r_hs_state *st) { u16 id; @@ -639,6 +658,7 @@ static const struct iio_chan_spec ad3552r_hs_channels[] = { static const struct iio_info ad3552r_hs_info = { .read_raw = &ad3552r_hs_read_raw, .write_raw = &ad3552r_hs_write_raw, + .debugfs_reg_access = &ad3552r_hs_reg_access, }; static int ad3552r_hs_probe(struct platform_device *pdev) diff --git a/drivers/iio/dac/ad3552r.h b/drivers/iio/dac/ad3552r.h index 768fa264d39e..9bb46a9e07a5 100644 --- a/drivers/iio/dac/ad3552r.h +++ b/drivers/iio/dac/ad3552r.h @@ -156,6 +156,7 @@ struct ad3552r_model_data { int num_ranges; bool requires_output_range; int num_spi_data_lanes; + int max_reg_addr; }; struct ad3552r_ch_data { -- cgit v1.2.3 From ba25cbf5fe757f42bb59c674633b78586b1a089d Mon Sep 17 00:00:00 2001 From: Jorge Marques Date: Fri, 21 Mar 2025 15:50:01 +0100 Subject: Documentation: ABI: add events sampling frequency in sysfs-bus-iio Some devices have an internal clock used by the events to space the conversions. The max1363 introduced the option in commit 168c9d95a940 ("iio:adc:max1363 move from staging.") and ad799x in commit ba1d79613df3 ("staging:iio:ad799x: Use event spec for threshold hysteresis") Signed-off-by: Jorge Marques Link: https://patch.msgid.link/20250321-abi-oversampling-events-frequency-v1-1-794c1ab2f079@analog.com Signed-off-by: Jonathan Cameron --- Documentation/ABI/testing/sysfs-bus-iio | 1 + 1 file changed, 1 insertion(+) diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio index 722aa989baac..33c09c4ac60a 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio +++ b/Documentation/ABI/testing/sysfs-bus-iio @@ -94,6 +94,7 @@ Description: What: /sys/bus/iio/devices/iio:deviceX/sampling_frequency What: /sys/bus/iio/devices/iio:deviceX/in_intensity_sampling_frequency What: /sys/bus/iio/devices/iio:deviceX/buffer/sampling_frequency +What: /sys/bus/iio/devices/iio:deviceX/events/sampling_frequency What: /sys/bus/iio/devices/triggerX/sampling_frequency KernelVersion: 2.6.35 Contact: linux-iio@vger.kernel.org -- cgit v1.2.3 From a29542e614014a081c507539ff1bb7d21cb046fc Mon Sep 17 00:00:00 2001 From: David Heidelberg Date: Wed, 19 Mar 2025 21:59:40 +0100 Subject: iio: light: al3010: Use unsigned int for the indexing The integer is used as array index which cannot be negative. Signed-off-by: David Heidelberg Link: https://patch.msgid.link/20250319-al3010-iio-regmap-v2-1-1310729d0543@ixit.cz Signed-off-by: Jonathan Cameron --- drivers/iio/light/al3010.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/light/al3010.c b/drivers/iio/light/al3010.c index 7cbb8b203300..4c2fd88ab32c 100644 --- a/drivers/iio/light/al3010.c +++ b/drivers/iio/light/al3010.c @@ -145,7 +145,7 @@ static int al3010_write_raw(struct iio_dev *indio_dev, int val2, long mask) { struct al3010_data *data = iio_priv(indio_dev); - int i; + unsigned int i; switch (mask) { case IIO_CHAN_INFO_SCALE: -- cgit v1.2.3 From cddd6a959c1e4833402650a098c5de8c876936b3 Mon Sep 17 00:00:00 2001 From: David Heidelberg Date: Wed, 19 Mar 2025 21:59:41 +0100 Subject: iio: light: al3320a: Use unsigned int for the indexing The integer is used as array index which cannot be negative. Signed-off-by: David Heidelberg Link: https://patch.msgid.link/20250319-al3010-iio-regmap-v2-2-1310729d0543@ixit.cz Signed-off-by: Jonathan Cameron --- drivers/iio/light/al3320a.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/light/al3320a.c b/drivers/iio/light/al3320a.c index 497ea3fe3377..bceda71517c8 100644 --- a/drivers/iio/light/al3320a.c +++ b/drivers/iio/light/al3320a.c @@ -163,7 +163,7 @@ static int al3320a_write_raw(struct iio_dev *indio_dev, int val2, long mask) { struct al3320a_data *data = iio_priv(indio_dev); - int i; + unsigned int i; switch (mask) { case IIO_CHAN_INFO_SCALE: -- cgit v1.2.3 From 58c8c655f4ca24b06a75eed28ade1729f1b5002c Mon Sep 17 00:00:00 2001 From: David Heidelberg Date: Wed, 19 Mar 2025 21:59:42 +0100 Subject: iio: light: al3010: Remove DRV_NAME definition The driver name should be passed directly. Signed-off-by: David Heidelberg Link: https://patch.msgid.link/20250319-al3010-iio-regmap-v2-3-1310729d0543@ixit.cz Signed-off-by: Jonathan Cameron --- drivers/iio/light/al3010.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/iio/light/al3010.c b/drivers/iio/light/al3010.c index 4c2fd88ab32c..7fe91049b55e 100644 --- a/drivers/iio/light/al3010.c +++ b/drivers/iio/light/al3010.c @@ -22,8 +22,6 @@ #include #include -#define AL3010_DRV_NAME "al3010" - #define AL3010_REG_SYSTEM 0x00 #define AL3010_REG_DATA_LOW 0x0c #define AL3010_REG_CONFIG 0x10 @@ -184,7 +182,7 @@ static int al3010_probe(struct i2c_client *client) data->client = client; indio_dev->info = &al3010_info; - indio_dev->name = AL3010_DRV_NAME; + indio_dev->name = "al3010"; indio_dev->channels = al3010_channels; indio_dev->num_channels = ARRAY_SIZE(al3010_channels); indio_dev->modes = INDIO_DIRECT_MODE; @@ -224,7 +222,7 @@ MODULE_DEVICE_TABLE(of, al3010_of_match); static struct i2c_driver al3010_driver = { .driver = { - .name = AL3010_DRV_NAME, + .name = "al3010", .of_match_table = al3010_of_match, .pm = pm_sleep_ptr(&al3010_pm_ops), }, -- cgit v1.2.3 From dd3f76931e718663a8312ce65433c81c171808fb Mon Sep 17 00:00:00 2001 From: David Heidelberg Date: Wed, 19 Mar 2025 21:59:43 +0100 Subject: iio: light: al3320a: Remove DRV_NAME definition The driver name should be passed directly. Signed-off-by: David Heidelberg Link: https://patch.msgid.link/20250319-al3010-iio-regmap-v2-4-1310729d0543@ixit.cz Signed-off-by: Jonathan Cameron --- drivers/iio/light/al3320a.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/iio/light/al3320a.c b/drivers/iio/light/al3320a.c index bceda71517c8..93416f3bd7fb 100644 --- a/drivers/iio/light/al3320a.c +++ b/drivers/iio/light/al3320a.c @@ -20,8 +20,6 @@ #include #include -#define AL3320A_DRV_NAME "al3320a" - #define AL3320A_REG_CONFIG 0x00 #define AL3320A_REG_STATUS 0x01 #define AL3320A_REG_INT 0x02 @@ -202,7 +200,7 @@ static int al3320a_probe(struct i2c_client *client) data->client = client; indio_dev->info = &al3320a_info; - indio_dev->name = AL3320A_DRV_NAME; + indio_dev->name = "al3320a"; indio_dev->channels = al3320a_channels; indio_dev->num_channels = ARRAY_SIZE(al3320a_channels); indio_dev->modes = INDIO_DIRECT_MODE; @@ -255,7 +253,7 @@ MODULE_DEVICE_TABLE(acpi, al3320a_acpi_match); static struct i2c_driver al3320a_driver = { .driver = { - .name = AL3320A_DRV_NAME, + .name = "al3320a", .of_match_table = al3320a_of_match, .pm = pm_sleep_ptr(&al3320a_pm_ops), .acpi_match_table = al3320a_acpi_match, -- cgit v1.2.3 From 861cc66854d611627649b2522c49914e09ddc026 Mon Sep 17 00:00:00 2001 From: David Heidelberg Date: Wed, 19 Mar 2025 21:59:44 +0100 Subject: iio: light: al3010: Abstract device reference in the probe function Introduce a local variable reducing redundancy and improving readability. No functional changes. Signed-off-by: David Heidelberg Link: https://patch.msgid.link/20250319-al3010-iio-regmap-v2-5-1310729d0543@ixit.cz Signed-off-by: Jonathan Cameron --- drivers/iio/light/al3010.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/iio/light/al3010.c b/drivers/iio/light/al3010.c index 7fe91049b55e..c8f528f3636a 100644 --- a/drivers/iio/light/al3010.c +++ b/drivers/iio/light/al3010.c @@ -170,10 +170,11 @@ static const struct iio_info al3010_info = { static int al3010_probe(struct i2c_client *client) { struct al3010_data *data; + struct device *dev = &client->dev; struct iio_dev *indio_dev; int ret; - indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); + indio_dev = devm_iio_device_alloc(dev, sizeof(*data)); if (!indio_dev) return -ENOMEM; @@ -189,11 +190,11 @@ static int al3010_probe(struct i2c_client *client) ret = al3010_init(data); if (ret < 0) { - dev_err(&client->dev, "al3010 chip init failed\n"); + dev_err(dev, "al3010 chip init failed\n"); return ret; } - return devm_iio_device_register(&client->dev, indio_dev); + return devm_iio_device_register(dev, indio_dev); } static int al3010_suspend(struct device *dev) -- cgit v1.2.3 From 26763a34812b38cdffbd8567f90c8b8c673fadda Mon Sep 17 00:00:00 2001 From: David Heidelberg Date: Wed, 19 Mar 2025 21:59:45 +0100 Subject: iio: light: al3320a: Abstract device reference in the probe function Introduce a local variable reducing redundancy and improving readability. No functional changes. Signed-off-by: David Heidelberg Link: https://patch.msgid.link/20250319-al3010-iio-regmap-v2-6-1310729d0543@ixit.cz Signed-off-by: Jonathan Cameron --- drivers/iio/light/al3320a.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/drivers/iio/light/al3320a.c b/drivers/iio/light/al3320a.c index 93416f3bd7fb..9817cfe8ae18 100644 --- a/drivers/iio/light/al3320a.c +++ b/drivers/iio/light/al3320a.c @@ -188,10 +188,11 @@ static const struct iio_info al3320a_info = { static int al3320a_probe(struct i2c_client *client) { struct al3320a_data *data; + struct device *dev = &client->dev; struct iio_dev *indio_dev; int ret; - indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); + indio_dev = devm_iio_device_alloc(dev, sizeof(*data)); if (!indio_dev) return -ENOMEM; @@ -207,17 +208,15 @@ static int al3320a_probe(struct i2c_client *client) ret = al3320a_init(data); if (ret < 0) { - dev_err(&client->dev, "al3320a chip init failed\n"); + dev_err(dev, "al3320a chip init failed\n"); return ret; } - ret = devm_add_action_or_reset(&client->dev, - al3320a_set_pwr_off, - data); + ret = devm_add_action_or_reset(dev, al3320a_set_pwr_off, data); if (ret < 0) return ret; - return devm_iio_device_register(&client->dev, indio_dev); + return devm_iio_device_register(dev, indio_dev); } static int al3320a_suspend(struct device *dev) -- cgit v1.2.3 From 2eaf77b4645ef43f8ad04bfefb9275c45eabada4 Mon Sep 17 00:00:00 2001 From: David Heidelberg Date: Wed, 19 Mar 2025 21:59:46 +0100 Subject: iio: light: al3010: Split set_pwr function into set_pwr_on and _off Simplifies later conversion to the regmap framework. Signed-off-by: David Heidelberg Link: https://patch.msgid.link/20250319-al3010-iio-regmap-v2-7-1310729d0543@ixit.cz Signed-off-by: Jonathan Cameron --- drivers/iio/light/al3010.c | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-) diff --git a/drivers/iio/light/al3010.c b/drivers/iio/light/al3010.c index c8f528f3636a..8c004a9239ae 100644 --- a/drivers/iio/light/al3010.c +++ b/drivers/iio/light/al3010.c @@ -67,24 +67,25 @@ static const struct attribute_group al3010_attribute_group = { .attrs = al3010_attributes, }; -static int al3010_set_pwr(struct i2c_client *client, bool pwr) +static int al3010_set_pwr_on(struct i2c_client *client) { - u8 val = pwr ? AL3010_CONFIG_ENABLE : AL3010_CONFIG_DISABLE; - return i2c_smbus_write_byte_data(client, AL3010_REG_SYSTEM, val); + return i2c_smbus_write_byte_data(client, AL3010_REG_SYSTEM, + AL3010_CONFIG_ENABLE); } static void al3010_set_pwr_off(void *_data) { struct al3010_data *data = _data; - al3010_set_pwr(data->client, false); + i2c_smbus_write_byte_data(data->client, AL3010_REG_SYSTEM, + AL3010_CONFIG_DISABLE); } static int al3010_init(struct al3010_data *data) { int ret; - ret = al3010_set_pwr(data->client, true); + ret = al3010_set_pwr_on(data->client); if (ret < 0) return ret; @@ -199,12 +200,15 @@ static int al3010_probe(struct i2c_client *client) static int al3010_suspend(struct device *dev) { - return al3010_set_pwr(to_i2c_client(dev), false); + struct al3010_data *data = iio_priv(dev_get_drvdata(dev)); + + al3010_set_pwr_off(data); + return 0; } static int al3010_resume(struct device *dev) { - return al3010_set_pwr(to_i2c_client(dev), true); + return al3010_set_pwr_on(to_i2c_client(dev)); } static DEFINE_SIMPLE_DEV_PM_OPS(al3010_pm_ops, al3010_suspend, al3010_resume); -- cgit v1.2.3 From 868fb0708087a9583cbf33ebc15eb6d2898b8787 Mon Sep 17 00:00:00 2001 From: David Heidelberg Date: Wed, 19 Mar 2025 21:59:47 +0100 Subject: iio: light: al3320a: Split set_pwr function into set_pwr_on and _off Simplifies later conversion to the regmap framework. Signed-off-by: David Heidelberg Link: https://patch.msgid.link/20250319-al3010-iio-regmap-v2-8-1310729d0543@ixit.cz Signed-off-by: Jonathan Cameron --- drivers/iio/light/al3320a.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/drivers/iio/light/al3320a.c b/drivers/iio/light/al3320a.c index 9817cfe8ae18..1b2b0359ed5d 100644 --- a/drivers/iio/light/al3320a.c +++ b/drivers/iio/light/al3320a.c @@ -80,24 +80,23 @@ static const struct attribute_group al3320a_attribute_group = { .attrs = al3320a_attributes, }; -static int al3320a_set_pwr(struct i2c_client *client, bool pwr) +static int al3320a_set_pwr_on(struct i2c_client *client) { - u8 val = pwr ? AL3320A_CONFIG_ENABLE : AL3320A_CONFIG_DISABLE; - return i2c_smbus_write_byte_data(client, AL3320A_REG_CONFIG, val); + return i2c_smbus_write_byte_data(client, AL3320A_REG_CONFIG, AL3320A_CONFIG_ENABLE); } static void al3320a_set_pwr_off(void *_data) { struct al3320a_data *data = _data; - al3320a_set_pwr(data->client, false); + i2c_smbus_write_byte_data(data->client, AL3320A_REG_CONFIG, AL3320A_CONFIG_DISABLE); } static int al3320a_init(struct al3320a_data *data) { int ret; - ret = al3320a_set_pwr(data->client, true); + ret = al3320a_set_pwr_on(data->client); if (ret < 0) return ret; @@ -221,12 +220,15 @@ static int al3320a_probe(struct i2c_client *client) static int al3320a_suspend(struct device *dev) { - return al3320a_set_pwr(to_i2c_client(dev), false); + struct al3320a_data *data = iio_priv(dev_get_drvdata(dev)); + + al3320a_set_pwr_off(data); + return 0; } static int al3320a_resume(struct device *dev) { - return al3320a_set_pwr(to_i2c_client(dev), true); + return al3320a_set_pwr_on(to_i2c_client(dev)); } static DEFINE_SIMPLE_DEV_PM_OPS(al3320a_pm_ops, al3320a_suspend, -- cgit v1.2.3 From 4d71bf6021818a039a534c5954acefdfc4d6962c Mon Sep 17 00:00:00 2001 From: David Lechner Date: Tue, 18 Mar 2025 17:52:10 -0500 Subject: iio: adc: ad7606_spi: check error in ad7606B_sw_mode_config() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add missing error check in ad7606B_sw_mode_config(). Reviewed-by: Nuno Sá Signed-off-by: David Lechner Link: https://patch.msgid.link/20250318-iio-adc-ad7606-improvements-v2-2-4b605427774c@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7606_spi.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/iio/adc/ad7606_spi.c b/drivers/iio/adc/ad7606_spi.c index 885bf0b68e77..c028e08efe2c 100644 --- a/drivers/iio/adc/ad7606_spi.c +++ b/drivers/iio/adc/ad7606_spi.c @@ -174,11 +174,13 @@ static int ad7616_sw_mode_config(struct iio_dev *indio_dev) static int ad7606B_sw_mode_config(struct iio_dev *indio_dev) { struct ad7606_state *st = iio_priv(indio_dev); + int ret; /* Configure device spi to output on a single channel */ - st->bops->reg_write(st, - AD7606_CONFIGURATION_REGISTER, - AD7606_SINGLE_DOUT); + ret = st->bops->reg_write(st, AD7606_CONFIGURATION_REGISTER, + AD7606_SINGLE_DOUT); + if (ret) + return ret; /* * Scale can be configured individually for each channel -- cgit v1.2.3 From 40fa5f535dd7968fd8a602766f9cb9774afb425b Mon Sep 17 00:00:00 2001 From: David Lechner Date: Tue, 18 Mar 2025 17:52:11 -0500 Subject: iio: adc: ad7606: add missing max sample rates MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add max sample rates for all of the chips. Previously, only one chip had this field populated. The fallback value for the initial sampling frequency can be removed now that all chips have a max sample rate defined. Reviewed-by: Nuno Sá Signed-off-by: David Lechner Link: https://patch.msgid.link/20250318-iio-adc-ad7606-improvements-v2-3-4b605427774c@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7606.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/drivers/iio/adc/ad7606.c b/drivers/iio/adc/ad7606.c index 1a314fddd7eb..36cc2b5ea7ad 100644 --- a/drivers/iio/adc/ad7606.c +++ b/drivers/iio/adc/ad7606.c @@ -196,6 +196,7 @@ static int ad7616_sw_mode_setup(struct iio_dev *indio_dev); static int ad7606b_sw_mode_setup(struct iio_dev *indio_dev); const struct ad7606_chip_info ad7605_4_info = { + .max_samplerate = 300 * KILO, .channels = ad7605_channels, .name = "ad7605-4", .num_adc_channels = 4, @@ -205,6 +206,7 @@ const struct ad7606_chip_info ad7605_4_info = { EXPORT_SYMBOL_NS_GPL(ad7605_4_info, "IIO_AD7606"); const struct ad7606_chip_info ad7606_8_info = { + .max_samplerate = 200 * KILO, .channels = ad7606_channels_16bit, .name = "ad7606-8", .num_adc_channels = 8, @@ -216,6 +218,7 @@ const struct ad7606_chip_info ad7606_8_info = { EXPORT_SYMBOL_NS_GPL(ad7606_8_info, "IIO_AD7606"); const struct ad7606_chip_info ad7606_6_info = { + .max_samplerate = 200 * KILO, .channels = ad7606_channels_16bit, .name = "ad7606-6", .num_adc_channels = 6, @@ -227,6 +230,7 @@ const struct ad7606_chip_info ad7606_6_info = { EXPORT_SYMBOL_NS_GPL(ad7606_6_info, "IIO_AD7606"); const struct ad7606_chip_info ad7606_4_info = { + .max_samplerate = 200 * KILO, .channels = ad7606_channels_16bit, .name = "ad7606-4", .num_adc_channels = 4, @@ -251,6 +255,7 @@ const struct ad7606_chip_info ad7606b_info = { EXPORT_SYMBOL_NS_GPL(ad7606b_info, "IIO_AD7606"); const struct ad7606_chip_info ad7606c_16_info = { + .max_samplerate = 1 * MEGA, .channels = ad7606_channels_16bit, .name = "ad7606c16", .num_adc_channels = 8, @@ -263,6 +268,7 @@ const struct ad7606_chip_info ad7606c_16_info = { EXPORT_SYMBOL_NS_GPL(ad7606c_16_info, "IIO_AD7606"); const struct ad7606_chip_info ad7607_info = { + .max_samplerate = 200 * KILO, .channels = ad7607_channels, .name = "ad7607", .num_adc_channels = 8, @@ -274,6 +280,7 @@ const struct ad7606_chip_info ad7607_info = { EXPORT_SYMBOL_NS_GPL(ad7607_info, "IIO_AD7606"); const struct ad7606_chip_info ad7608_info = { + .max_samplerate = 200 * KILO, .channels = ad7608_channels, .name = "ad7608", .num_adc_channels = 8, @@ -285,6 +292,7 @@ const struct ad7606_chip_info ad7608_info = { EXPORT_SYMBOL_NS_GPL(ad7608_info, "IIO_AD7606"); const struct ad7606_chip_info ad7609_info = { + .max_samplerate = 200 * KILO, .channels = ad7608_channels, .name = "ad7609", .num_adc_channels = 8, @@ -296,6 +304,7 @@ const struct ad7606_chip_info ad7609_info = { EXPORT_SYMBOL_NS_GPL(ad7609_info, "IIO_AD7606"); const struct ad7606_chip_info ad7606c_18_info = { + .max_samplerate = 1 * MEGA, .channels = ad7606_channels_18bit, .name = "ad7606c18", .num_adc_channels = 8, @@ -308,6 +317,7 @@ const struct ad7606_chip_info ad7606c_18_info = { EXPORT_SYMBOL_NS_GPL(ad7606c_18_info, "IIO_AD7606"); const struct ad7606_chip_info ad7616_info = { + .max_samplerate = 1 * MEGA, .channels = ad7616_channels, .init_delay_ms = 15, .name = "ad7616", @@ -1396,8 +1406,7 @@ int ad7606_probe(struct device *dev, int irq, void __iomem *base_address, * If there is a backend, the PWM should not overpass the maximum sampling * frequency the chip supports. */ - ret = ad7606_set_sampling_freq(st, - chip_info->max_samplerate ? : 2 * KILO); + ret = ad7606_set_sampling_freq(st, chip_info->max_samplerate); if (ret) return ret; -- cgit v1.2.3 From 37fd5e6e0f33031e06c0406f289bcb2dcf4a1f4b Mon Sep 17 00:00:00 2001 From: David Lechner Date: Tue, 18 Mar 2025 17:52:12 -0500 Subject: iio: adc: ad7606: use devm_mutex_init() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Use devm_mutex_init() in ad7606_probe(). Mutexes should be cleaned up on driver removal. Also add missing include while we are touching this. Reviewed-by: Nuno Sá Signed-off-by: David Lechner Link: https://patch.msgid.link/20250318-iio-adc-ad7606-improvements-v2-4-4b605427774c@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7606.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/iio/adc/ad7606.c b/drivers/iio/adc/ad7606.c index 36cc2b5ea7ad..84f45d8a4b0e 100644 --- a/drivers/iio/adc/ad7606.c +++ b/drivers/iio/adc/ad7606.c @@ -13,6 +13,7 @@ #include #include #include +#include #include #include #include @@ -1327,8 +1328,11 @@ int ad7606_probe(struct device *dev, int irq, void __iomem *base_address, st = iio_priv(indio_dev); dev_set_drvdata(dev, indio_dev); + ret = devm_mutex_init(dev, &st->lock); + if (ret) + return ret; + st->dev = dev; - mutex_init(&st->lock); st->bops = bops; st->base_address = base_address; st->oversampling = 1; -- cgit v1.2.3 From 450f44b71a2cf10785a6c1d97e249dda46e05f99 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Tue, 18 Mar 2025 17:52:13 -0500 Subject: iio: adc: ad7606: fix kernel-doc comments MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fix several issues with kernel-doc comments in ad7606.h: * Add missing ":" to @param names. * Fix order of @param names. * Add some missing parameters. * Remove some non-existent parameters. * Fix alignment and wrapping. * Fix some spelling. `./scripts/kernel-doc -v -none drivers/iio/adc/ad7606*` is happy now. Reviewed-by: Nuno Sá Signed-off-by: David Lechner Link: https://patch.msgid.link/20250318-iio-adc-ad7606-improvements-v2-5-4b605427774c@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7606.h | 92 ++++++++++++++++++++++++------------------------ 1 file changed, 46 insertions(+), 46 deletions(-) diff --git a/drivers/iio/adc/ad7606.h b/drivers/iio/adc/ad7606.h index 71a30525eaab..dd4ae59dc59a 100644 --- a/drivers/iio/adc/ad7606.h +++ b/drivers/iio/adc/ad7606.h @@ -120,17 +120,17 @@ typedef int (*ad7606_sw_setup_cb_t)(struct iio_dev *indio_dev); /** * struct ad7606_chip_info - chip specific information * @channels: channel specification - * @max_samplerate: maximum supported samplerate - * @name device name - * @num_channels: number of channels - * @num_adc_channels the number of channels the ADC actually inputs. + * @max_samplerate: maximum supported sample rate + * @name: device name + * @num_adc_channels: the number of physical voltage inputs + * @num_channels: number of IIO channels * @scale_setup_cb: callback to setup the scales for each channel * @sw_setup_cb: callback to setup the software mode if available. - * @oversampling_avail pointer to the array which stores the available + * @oversampling_avail: pointer to the array which stores the available * oversampling ratios. - * @oversampling_num number of elements stored in oversampling_avail array - * @os_req_reset some devices require a reset to update oversampling - * @init_delay_ms required delay in milliseconds for initialization + * @oversampling_num: number of elements stored in oversampling_avail array + * @os_req_reset: some devices require a reset to update oversampling + * @init_delay_ms: required delay in milliseconds for initialization * after a restart */ struct ad7606_chip_info { @@ -149,10 +149,10 @@ struct ad7606_chip_info { /** * struct ad7606_chan_scale - channel scale configuration - * @scale_avail pointer to the array which stores the available scales - * @num_scales number of elements stored in the scale_avail array - * @range voltage range selection, selects which scale to apply - * @reg_offset offset for the register value, to be applied when + * @scale_avail: pointer to the array which stores the available scales + * @num_scales: number of elements stored in the scale_avail array + * @range: voltage range selection, selects which scale to apply + * @reg_offset: offset for the register value, to be applied when * writing the value of 'range' to the register value */ struct ad7606_chan_scale { @@ -165,32 +165,33 @@ struct ad7606_chan_scale { /** * struct ad7606_state - driver instance specific data - * @dev pointer to kernel device - * @chip_info entry in the table of chips that describes this device - * @bops bus operations (SPI or parallel) - * @chan_scales scale configuration for channels - * @oversampling oversampling selection - * @cnvst_pwm pointer to the PWM device connected to the cnvst pin - * @base_address address from where to read data in parallel operation - * @sw_mode_en software mode enabled - * @oversampling_avail pointer to the array which stores the available + * @dev: pointer to kernel device + * @chip_info: entry in the table of chips that describes this device + * @bops: bus operations (SPI or parallel) + * @chan_scales: scale configuration for channels + * @oversampling: oversampling selection + * @cnvst_pwm: pointer to the PWM device connected to the cnvst pin + * @base_address: address from where to read data in parallel operation + * @sw_mode_en: software mode enabled + * @oversampling_avail: pointer to the array which stores the available * oversampling ratios. - * @num_os_ratios number of elements stored in oversampling_avail array - * @write_scale pointer to the function which writes the scale - * @write_os pointer to the function which writes the os - * @lock protect sensor state from concurrent accesses to GPIOs - * @gpio_convst GPIO descriptor for conversion start signal (CONVST) - * @gpio_reset GPIO descriptor for device hard-reset - * @gpio_range GPIO descriptor for range selection - * @gpio_standby GPIO descriptor for stand-by signal (STBY), + * @num_os_ratios: number of elements stored in oversampling_avail array + * @back: pointer to the iio_backend structure, if used + * @write_scale: pointer to the function which writes the scale + * @write_os: pointer to the function which writes the os + * @lock: protect sensor state from concurrent accesses to GPIOs + * @gpio_convst: GPIO descriptor for conversion start signal (CONVST) + * @gpio_reset: GPIO descriptor for device hard-reset + * @gpio_range: GPIO descriptor for range selection + * @gpio_standby: GPIO descriptor for stand-by signal (STBY), * controls power-down mode of device - * @gpio_frstdata GPIO descriptor for reading from device when data + * @gpio_frstdata: GPIO descriptor for reading from device when data * is being read on the first channel - * @gpio_os GPIO descriptors to control oversampling on the device - * @complete completion to indicate end of conversion - * @trig The IIO trigger associated with the device. - * @data buffer for reading data from the device - * @d16 be16 buffer for reading data from the device + * @gpio_os: GPIO descriptors to control oversampling on the device + * @trig: The IIO trigger associated with the device. + * @completion: completion to indicate end of conversion + * @data: buffer for reading data from the device + * @d16: be16 buffer for reading data from the device */ struct ad7606_state { struct device *dev; @@ -232,17 +233,16 @@ struct ad7606_state { /** * struct ad7606_bus_ops - driver bus operations - * @iio_backend_config function pointer for configuring the iio_backend for + * @iio_backend_config: function pointer for configuring the iio_backend for * the compatibles that use it - * @read_block function pointer for reading blocks of data + * @read_block: function pointer for reading blocks of data * @sw_mode_config: pointer to a function which configured the device * for software mode - * @reg_read function pointer for reading spi register - * @reg_write function pointer for writing spi register - * @write_mask function pointer for write spi register with mask - * @update_scan_mode function pointer for handling the calls to iio_info's update_scan - * mode when enabling/disabling channels. - * @rd_wr_cmd pointer to the function which calculates the spi address + * @reg_read: function pointer for reading spi register + * @reg_write: function pointer for writing spi register + * @update_scan_mode: function pointer for handling the calls to iio_info's + * update_scan mode when enabling/disabling channels. + * @rd_wr_cmd: pointer to the function which calculates the spi address */ struct ad7606_bus_ops { /* more methods added in future? */ @@ -258,9 +258,9 @@ struct ad7606_bus_ops { }; /** - * struct ad7606_bus_info - agregate ad7606_chip_info and ad7606_bus_ops - * @chip_info entry in the table of chips that describes this device - * @bops bus operations (SPI or parallel) + * struct ad7606_bus_info - aggregate ad7606_chip_info and ad7606_bus_ops + * @chip_info: entry in the table of chips that describes this device + * @bops: bus operations (SPI or parallel) */ struct ad7606_bus_info { const struct ad7606_chip_info *chip_info; -- cgit v1.2.3 From 050cf84f0b2a76dbc50dd52e0eca590eff0e27c3 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Tue, 18 Mar 2025 17:52:14 -0500 Subject: iio: adc: ad7606: use kernel identifier name style MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Use lower_snake_case for the identifier names as that is the usual kernel code style. Reviewed-by: Nuno Sá Signed-off-by: David Lechner Link: https://patch.msgid.link/20250318-iio-adc-ad7606-improvements-v2-6-4b605427774c@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7606.h | 2 +- drivers/iio/adc/ad7606_spi.c | 16 ++++++++-------- 2 files changed, 9 insertions(+), 9 deletions(-) diff --git a/drivers/iio/adc/ad7606.h b/drivers/iio/adc/ad7606.h index dd4ae59dc59a..5ee04e8f4041 100644 --- a/drivers/iio/adc/ad7606.h +++ b/drivers/iio/adc/ad7606.h @@ -254,7 +254,7 @@ struct ad7606_bus_ops { unsigned int addr, unsigned int val); int (*update_scan_mode)(struct iio_dev *indio_dev, const unsigned long *scan_mask); - u16 (*rd_wr_cmd)(int addr, char isWriteOp); + u16 (*rd_wr_cmd)(int addr, char is_write_op); }; /** diff --git a/drivers/iio/adc/ad7606_spi.c b/drivers/iio/adc/ad7606_spi.c index c028e08efe2c..1abaf8626206 100644 --- a/drivers/iio/adc/ad7606_spi.c +++ b/drivers/iio/adc/ad7606_spi.c @@ -59,16 +59,16 @@ static const struct iio_chan_spec ad7606c_18_sw_channels[] = { AD7606_SW_CHANNEL(7, 18), }; -static u16 ad7616_spi_rd_wr_cmd(int addr, char isWriteOp) +static u16 ad7616_spi_rd_wr_cmd(int addr, char is_write_op) { /* * The address of register consist of one w/r bit * 6 bits of address followed by one reserved bit. */ - return ((addr & 0x7F) << 1) | ((isWriteOp & 0x1) << 7); + return ((addr & 0x7F) << 1) | ((is_write_op & 0x1) << 7); } -static u16 ad7606B_spi_rd_wr_cmd(int addr, char is_write_op) +static u16 ad7606b_spi_rd_wr_cmd(int addr, char is_write_op) { /* * The address of register consists of one bit which @@ -171,7 +171,7 @@ static int ad7616_sw_mode_config(struct iio_dev *indio_dev) return 0; } -static int ad7606B_sw_mode_config(struct iio_dev *indio_dev) +static int ad7606b_sw_mode_config(struct iio_dev *indio_dev) { struct ad7606_state *st = iio_priv(indio_dev); int ret; @@ -195,7 +195,7 @@ static int ad7606c_18_sw_mode_config(struct iio_dev *indio_dev) { int ret; - ret = ad7606B_sw_mode_config(indio_dev); + ret = ad7606b_sw_mode_config(indio_dev); if (ret) return ret; @@ -228,15 +228,15 @@ static const struct ad7606_bus_ops ad7606b_spi_bops = { .read_block = ad7606_spi_read_block, .reg_read = ad7606_spi_reg_read, .reg_write = ad7606_spi_reg_write, - .rd_wr_cmd = ad7606B_spi_rd_wr_cmd, - .sw_mode_config = ad7606B_sw_mode_config, + .rd_wr_cmd = ad7606b_spi_rd_wr_cmd, + .sw_mode_config = ad7606b_sw_mode_config, }; static const struct ad7606_bus_ops ad7606c_18_spi_bops = { .read_block = ad7606_spi_read_block18to32, .reg_read = ad7606_spi_reg_read, .reg_write = ad7606_spi_reg_write, - .rd_wr_cmd = ad7606B_spi_rd_wr_cmd, + .rd_wr_cmd = ad7606b_spi_rd_wr_cmd, .sw_mode_config = ad7606c_18_sw_mode_config, }; -- cgit v1.2.3 From f504e35293f344b541b8b1f52887049088ff8211 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Tue, 18 Mar 2025 17:52:15 -0500 Subject: iio: adc: ad7606: don't use address field MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Drop use of the address field in the ad7606 driver. This field was duplicating the same info that was already in the channel and scan_index fields. This is one less thing to have to hold in your mind when reading the code. Reviewed-by: Nuno Sá Signed-off-by: David Lechner Link: https://patch.msgid.link/20250318-iio-adc-ad7606-improvements-v2-7-4b605427774c@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7606.c | 8 ++++---- drivers/iio/adc/ad7606.h | 1 - 2 files changed, 4 insertions(+), 5 deletions(-) diff --git a/drivers/iio/adc/ad7606.c b/drivers/iio/adc/ad7606.c index 84f45d8a4b0e..826685b2fb23 100644 --- a/drivers/iio/adc/ad7606.c +++ b/drivers/iio/adc/ad7606.c @@ -776,14 +776,14 @@ static int ad7606_read_raw(struct iio_dev *indio_dev, case IIO_CHAN_INFO_RAW: if (!iio_device_claim_direct(indio_dev)) return -EBUSY; - ret = ad7606_scan_direct(indio_dev, chan->address, val); + ret = ad7606_scan_direct(indio_dev, chan->scan_index, val); iio_device_release_direct(indio_dev); if (ret < 0) return ret; return IIO_VAL_INT; case IIO_CHAN_INFO_SCALE: if (st->sw_mode_en) - ch = chan->address; + ch = chan->scan_index; cs = &st->chan_scales[ch]; *val = cs->scale_avail[cs->range][0]; *val2 = cs->scale_avail[cs->range][1]; @@ -865,7 +865,7 @@ static int ad7606_write_raw(struct iio_dev *indio_dev, switch (mask) { case IIO_CHAN_INFO_SCALE: if (st->sw_mode_en) - ch = chan->address; + ch = chan->scan_index; cs = &st->chan_scales[ch]; for (i = 0; i < cs->num_scales; i++) { scale_avail_uv[i] = cs->scale_avail[i][0] * MICRO + @@ -1072,7 +1072,7 @@ static int ad7606_read_avail(struct iio_dev *indio_dev, case IIO_CHAN_INFO_SCALE: if (st->sw_mode_en) - ch = chan->address; + ch = chan->scan_index; cs = &st->chan_scales[ch]; *vals = (int *)cs->scale_avail; diff --git a/drivers/iio/adc/ad7606.h b/drivers/iio/adc/ad7606.h index 5ee04e8f4041..16a230a7c00e 100644 --- a/drivers/iio/adc/ad7606.h +++ b/drivers/iio/adc/ad7606.h @@ -45,7 +45,6 @@ .type = IIO_VOLTAGE, \ .indexed = 1, \ .channel = num, \ - .address = num, \ .info_mask_separate = mask_sep, \ .info_mask_separate_available = \ mask_sep_avail, \ -- cgit v1.2.3 From c1f571c3ca17cf3ab3e32f33d773b8e04378c189 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Tue, 18 Mar 2025 17:52:16 -0500 Subject: iio: adc: ad7606: drop ch param from ad7606_scale_setup_cb_t MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Drop the ch parameter from the ad7606_scale_setup_cb_t functions. The same info is already available from the chan param via chan->scan_type and chan->channel, so the parameter is redundant. Reviewed-by: Nuno Sá Signed-off-by: David Lechner Link: https://patch.msgid.link/20250318-iio-adc-ad7606-improvements-v2-8-4b605427774c@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7606.c | 44 +++++++++++++++++++++++--------------------- drivers/iio/adc/ad7606.h | 2 +- 2 files changed, 24 insertions(+), 22 deletions(-) diff --git a/drivers/iio/adc/ad7606.c b/drivers/iio/adc/ad7606.c index 826685b2fb23..b7c3eb98afa0 100644 --- a/drivers/iio/adc/ad7606.c +++ b/drivers/iio/adc/ad7606.c @@ -182,17 +182,17 @@ static const struct iio_chan_spec ad7616_channels[] = { }; static int ad7606c_18bit_chan_scale_setup(struct iio_dev *indio_dev, - struct iio_chan_spec *chan, int ch); + struct iio_chan_spec *chan); static int ad7606c_16bit_chan_scale_setup(struct iio_dev *indio_dev, - struct iio_chan_spec *chan, int ch); + struct iio_chan_spec *chan); static int ad7606_16bit_chan_scale_setup(struct iio_dev *indio_dev, - struct iio_chan_spec *chan, int ch); + struct iio_chan_spec *chan); static int ad7607_chan_scale_setup(struct iio_dev *indio_dev, - struct iio_chan_spec *chan, int ch); + struct iio_chan_spec *chan); static int ad7608_chan_scale_setup(struct iio_dev *indio_dev, - struct iio_chan_spec *chan, int ch); + struct iio_chan_spec *chan); static int ad7609_chan_scale_setup(struct iio_dev *indio_dev, - struct iio_chan_spec *chan, int ch); + struct iio_chan_spec *chan); static int ad7616_sw_mode_setup(struct iio_dev *indio_dev); static int ad7606b_sw_mode_setup(struct iio_dev *indio_dev); @@ -346,10 +346,10 @@ int ad7606_reset(struct ad7606_state *st) EXPORT_SYMBOL_NS_GPL(ad7606_reset, "IIO_AD7606"); static int ad7606_16bit_chan_scale_setup(struct iio_dev *indio_dev, - struct iio_chan_spec *chan, int ch) + struct iio_chan_spec *chan) { struct ad7606_state *st = iio_priv(indio_dev); - struct ad7606_chan_scale *cs = &st->chan_scales[ch]; + struct ad7606_chan_scale *cs = &st->chan_scales[chan->scan_index]; if (!st->sw_mode_en) { /* tied to logic low, analog input range is +/- 5V */ @@ -425,10 +425,10 @@ static int ad7606_get_chan_config(struct iio_dev *indio_dev, int ch, } static int ad7606c_18bit_chan_scale_setup(struct iio_dev *indio_dev, - struct iio_chan_spec *chan, int ch) + struct iio_chan_spec *chan) { struct ad7606_state *st = iio_priv(indio_dev); - struct ad7606_chan_scale *cs = &st->chan_scales[ch]; + struct ad7606_chan_scale *cs = &st->chan_scales[chan->scan_index]; bool bipolar, differential; int ret; @@ -439,7 +439,8 @@ static int ad7606c_18bit_chan_scale_setup(struct iio_dev *indio_dev, return 0; } - ret = ad7606_get_chan_config(indio_dev, ch, &bipolar, &differential); + ret = ad7606_get_chan_config(indio_dev, chan->scan_index, &bipolar, + &differential); if (ret) return ret; @@ -482,10 +483,10 @@ static int ad7606c_18bit_chan_scale_setup(struct iio_dev *indio_dev, } static int ad7606c_16bit_chan_scale_setup(struct iio_dev *indio_dev, - struct iio_chan_spec *chan, int ch) + struct iio_chan_spec *chan) { struct ad7606_state *st = iio_priv(indio_dev); - struct ad7606_chan_scale *cs = &st->chan_scales[ch]; + struct ad7606_chan_scale *cs = &st->chan_scales[chan->scan_index]; bool bipolar, differential; int ret; @@ -496,7 +497,8 @@ static int ad7606c_16bit_chan_scale_setup(struct iio_dev *indio_dev, return 0; } - ret = ad7606_get_chan_config(indio_dev, ch, &bipolar, &differential); + ret = ad7606_get_chan_config(indio_dev, chan->scan_index, &bipolar, + &differential); if (ret) return ret; @@ -540,10 +542,10 @@ static int ad7606c_16bit_chan_scale_setup(struct iio_dev *indio_dev, } static int ad7607_chan_scale_setup(struct iio_dev *indio_dev, - struct iio_chan_spec *chan, int ch) + struct iio_chan_spec *chan) { struct ad7606_state *st = iio_priv(indio_dev); - struct ad7606_chan_scale *cs = &st->chan_scales[ch]; + struct ad7606_chan_scale *cs = &st->chan_scales[chan->scan_index]; cs->range = 0; cs->scale_avail = ad7607_hw_scale_avail; @@ -552,10 +554,10 @@ static int ad7607_chan_scale_setup(struct iio_dev *indio_dev, } static int ad7608_chan_scale_setup(struct iio_dev *indio_dev, - struct iio_chan_spec *chan, int ch) + struct iio_chan_spec *chan) { struct ad7606_state *st = iio_priv(indio_dev); - struct ad7606_chan_scale *cs = &st->chan_scales[ch]; + struct ad7606_chan_scale *cs = &st->chan_scales[chan->scan_index]; cs->range = 0; cs->scale_avail = ad7606_18bit_hw_scale_avail; @@ -564,10 +566,10 @@ static int ad7608_chan_scale_setup(struct iio_dev *indio_dev, } static int ad7609_chan_scale_setup(struct iio_dev *indio_dev, - struct iio_chan_spec *chan, int ch) + struct iio_chan_spec *chan) { struct ad7606_state *st = iio_priv(indio_dev); - struct ad7606_chan_scale *cs = &st->chan_scales[ch]; + struct ad7606_chan_scale *cs = &st->chan_scales[chan->scan_index]; cs->range = 0; cs->scale_avail = ad7609_hw_scale_avail; @@ -1300,7 +1302,7 @@ static int ad7606_chan_scales_setup(struct iio_dev *indio_dev) indio_dev->channels = chans; for (ch = 0; ch < st->chip_info->num_adc_channels; ch++) { - ret = st->chip_info->scale_setup_cb(indio_dev, &chans[ch + offset], ch); + ret = st->chip_info->scale_setup_cb(indio_dev, &chans[ch + offset]); if (ret) return ret; } diff --git a/drivers/iio/adc/ad7606.h b/drivers/iio/adc/ad7606.h index 16a230a7c00e..c57a193761c9 100644 --- a/drivers/iio/adc/ad7606.h +++ b/drivers/iio/adc/ad7606.h @@ -113,7 +113,7 @@ struct ad7606_state; typedef int (*ad7606_scale_setup_cb_t)(struct iio_dev *indio_dev, - struct iio_chan_spec *chan, int ch); + struct iio_chan_spec *chan); typedef int (*ad7606_sw_setup_cb_t)(struct iio_dev *indio_dev); /** -- cgit v1.2.3 From 3b5b55ca940733b7b533fe3137a307ceacb4fb90 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Tue, 18 Mar 2025 17:52:17 -0500 Subject: iio: adc: ad7606: dynamically allocate channel info MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Refactor the ad7606 drivers to dynamically allocate the channel info. The channel info was getting a bit unwieldy. In some cases, the indio_dev->channels field was getting assigned up to 3 different times, each in a different function, making it difficult to see where the info was coming from. This problem stems from the number of permutations of the channel array needed to support various modes of operation and data buses. We already have 4 per chip (hardware mode, software mode, AXI ADC backend and AXI ADC backend with software mode) and we intend to add two more per chip when adding SPI offload support. To make it easier to read and maintain, move all of the channel setup to a single function that dynamically allocates and fills in the channel info. Additionally, this lets us remove some hacks where we had to compute an offset due to the fact that sometimes there was a soft timestamp channel at the start of the array. Now the timestamp channel is always at the end of the array as is typical in other drivers. Reviewed-by: Nuno Sá Signed-off-by: David Lechner Link: https://patch.msgid.link/20250318-iio-adc-ad7606-improvements-v2-9-4b605427774c@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7606.c | 232 ++++++++++++++++++------------------------- drivers/iio/adc/ad7606.h | 76 +------------- drivers/iio/adc/ad7606_par.c | 33 ------ drivers/iio/adc/ad7606_spi.c | 86 +--------------- 4 files changed, 102 insertions(+), 325 deletions(-) diff --git a/drivers/iio/adc/ad7606.c b/drivers/iio/adc/ad7606.c index b7c3eb98afa0..60a4e599af1f 100644 --- a/drivers/iio/adc/ad7606.c +++ b/drivers/iio/adc/ad7606.c @@ -95,92 +95,6 @@ static const unsigned int ad7616_oversampling_avail[8] = { 1, 2, 4, 8, 16, 32, 64, 128, }; -static const struct iio_chan_spec ad7605_channels[] = { - IIO_CHAN_SOFT_TIMESTAMP(4), - AD7605_CHANNEL(0), - AD7605_CHANNEL(1), - AD7605_CHANNEL(2), - AD7605_CHANNEL(3), -}; - -static const struct iio_chan_spec ad7606_channels_16bit[] = { - IIO_CHAN_SOFT_TIMESTAMP(8), - AD7606_CHANNEL(0, 16), - AD7606_CHANNEL(1, 16), - AD7606_CHANNEL(2, 16), - AD7606_CHANNEL(3, 16), - AD7606_CHANNEL(4, 16), - AD7606_CHANNEL(5, 16), - AD7606_CHANNEL(6, 16), - AD7606_CHANNEL(7, 16), -}; - -static const struct iio_chan_spec ad7606_channels_18bit[] = { - IIO_CHAN_SOFT_TIMESTAMP(8), - AD7606_CHANNEL(0, 18), - AD7606_CHANNEL(1, 18), - AD7606_CHANNEL(2, 18), - AD7606_CHANNEL(3, 18), - AD7606_CHANNEL(4, 18), - AD7606_CHANNEL(5, 18), - AD7606_CHANNEL(6, 18), - AD7606_CHANNEL(7, 18), -}; - -static const struct iio_chan_spec ad7607_channels[] = { - IIO_CHAN_SOFT_TIMESTAMP(8), - AD7606_CHANNEL(0, 14), - AD7606_CHANNEL(1, 14), - AD7606_CHANNEL(2, 14), - AD7606_CHANNEL(3, 14), - AD7606_CHANNEL(4, 14), - AD7606_CHANNEL(5, 14), - AD7606_CHANNEL(6, 14), - AD7606_CHANNEL(7, 14), -}; - -static const struct iio_chan_spec ad7608_channels[] = { - IIO_CHAN_SOFT_TIMESTAMP(8), - AD7606_CHANNEL(0, 18), - AD7606_CHANNEL(1, 18), - AD7606_CHANNEL(2, 18), - AD7606_CHANNEL(3, 18), - AD7606_CHANNEL(4, 18), - AD7606_CHANNEL(5, 18), - AD7606_CHANNEL(6, 18), - AD7606_CHANNEL(7, 18), -}; - -/* - * The current assumption that this driver makes for AD7616, is that it's - * working in Hardware Mode with Serial, Burst and Sequencer modes activated. - * To activate them, following pins must be pulled high: - * -SER/PAR - * -SEQEN - * And following pins must be pulled low: - * -WR/BURST - * -DB4/SER1W - */ -static const struct iio_chan_spec ad7616_channels[] = { - IIO_CHAN_SOFT_TIMESTAMP(16), - AD7606_CHANNEL(0, 16), - AD7606_CHANNEL(1, 16), - AD7606_CHANNEL(2, 16), - AD7606_CHANNEL(3, 16), - AD7606_CHANNEL(4, 16), - AD7606_CHANNEL(5, 16), - AD7606_CHANNEL(6, 16), - AD7606_CHANNEL(7, 16), - AD7606_CHANNEL(8, 16), - AD7606_CHANNEL(9, 16), - AD7606_CHANNEL(10, 16), - AD7606_CHANNEL(11, 16), - AD7606_CHANNEL(12, 16), - AD7606_CHANNEL(13, 16), - AD7606_CHANNEL(14, 16), - AD7606_CHANNEL(15, 16), -}; - static int ad7606c_18bit_chan_scale_setup(struct iio_dev *indio_dev, struct iio_chan_spec *chan); static int ad7606c_16bit_chan_scale_setup(struct iio_dev *indio_dev, @@ -198,20 +112,18 @@ static int ad7606b_sw_mode_setup(struct iio_dev *indio_dev); const struct ad7606_chip_info ad7605_4_info = { .max_samplerate = 300 * KILO, - .channels = ad7605_channels, .name = "ad7605-4", + .bits = 16, .num_adc_channels = 4, - .num_channels = 5, .scale_setup_cb = ad7606_16bit_chan_scale_setup, }; EXPORT_SYMBOL_NS_GPL(ad7605_4_info, "IIO_AD7606"); const struct ad7606_chip_info ad7606_8_info = { .max_samplerate = 200 * KILO, - .channels = ad7606_channels_16bit, .name = "ad7606-8", + .bits = 16, .num_adc_channels = 8, - .num_channels = 9, .oversampling_avail = ad7606_oversampling_avail, .oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail), .scale_setup_cb = ad7606_16bit_chan_scale_setup, @@ -220,10 +132,9 @@ EXPORT_SYMBOL_NS_GPL(ad7606_8_info, "IIO_AD7606"); const struct ad7606_chip_info ad7606_6_info = { .max_samplerate = 200 * KILO, - .channels = ad7606_channels_16bit, .name = "ad7606-6", + .bits = 16, .num_adc_channels = 6, - .num_channels = 7, .oversampling_avail = ad7606_oversampling_avail, .oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail), .scale_setup_cb = ad7606_16bit_chan_scale_setup, @@ -232,10 +143,9 @@ EXPORT_SYMBOL_NS_GPL(ad7606_6_info, "IIO_AD7606"); const struct ad7606_chip_info ad7606_4_info = { .max_samplerate = 200 * KILO, - .channels = ad7606_channels_16bit, .name = "ad7606-4", + .bits = 16, .num_adc_channels = 4, - .num_channels = 5, .oversampling_avail = ad7606_oversampling_avail, .oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail), .scale_setup_cb = ad7606_16bit_chan_scale_setup, @@ -243,11 +153,10 @@ const struct ad7606_chip_info ad7606_4_info = { EXPORT_SYMBOL_NS_GPL(ad7606_4_info, "IIO_AD7606"); const struct ad7606_chip_info ad7606b_info = { - .channels = ad7606_channels_16bit, .max_samplerate = 800 * KILO, .name = "ad7606b", + .bits = 16, .num_adc_channels = 8, - .num_channels = 9, .oversampling_avail = ad7606_oversampling_avail, .oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail), .scale_setup_cb = ad7606_16bit_chan_scale_setup, @@ -257,10 +166,9 @@ EXPORT_SYMBOL_NS_GPL(ad7606b_info, "IIO_AD7606"); const struct ad7606_chip_info ad7606c_16_info = { .max_samplerate = 1 * MEGA, - .channels = ad7606_channels_16bit, .name = "ad7606c16", + .bits = 16, .num_adc_channels = 8, - .num_channels = 9, .oversampling_avail = ad7606_oversampling_avail, .oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail), .scale_setup_cb = ad7606c_16bit_chan_scale_setup, @@ -270,10 +178,9 @@ EXPORT_SYMBOL_NS_GPL(ad7606c_16_info, "IIO_AD7606"); const struct ad7606_chip_info ad7607_info = { .max_samplerate = 200 * KILO, - .channels = ad7607_channels, .name = "ad7607", + .bits = 14, .num_adc_channels = 8, - .num_channels = 9, .oversampling_avail = ad7606_oversampling_avail, .oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail), .scale_setup_cb = ad7607_chan_scale_setup, @@ -282,10 +189,9 @@ EXPORT_SYMBOL_NS_GPL(ad7607_info, "IIO_AD7606"); const struct ad7606_chip_info ad7608_info = { .max_samplerate = 200 * KILO, - .channels = ad7608_channels, .name = "ad7608", + .bits = 18, .num_adc_channels = 8, - .num_channels = 9, .oversampling_avail = ad7606_oversampling_avail, .oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail), .scale_setup_cb = ad7608_chan_scale_setup, @@ -294,10 +200,9 @@ EXPORT_SYMBOL_NS_GPL(ad7608_info, "IIO_AD7606"); const struct ad7606_chip_info ad7609_info = { .max_samplerate = 200 * KILO, - .channels = ad7608_channels, .name = "ad7609", + .bits = 18, .num_adc_channels = 8, - .num_channels = 9, .oversampling_avail = ad7606_oversampling_avail, .oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail), .scale_setup_cb = ad7609_chan_scale_setup, @@ -306,10 +211,9 @@ EXPORT_SYMBOL_NS_GPL(ad7609_info, "IIO_AD7606"); const struct ad7606_chip_info ad7606c_18_info = { .max_samplerate = 1 * MEGA, - .channels = ad7606_channels_18bit, .name = "ad7606c18", + .bits = 18, .num_adc_channels = 8, - .num_channels = 9, .oversampling_avail = ad7606_oversampling_avail, .oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail), .scale_setup_cb = ad7606c_18bit_chan_scale_setup, @@ -319,11 +223,10 @@ EXPORT_SYMBOL_NS_GPL(ad7606c_18_info, "IIO_AD7606"); const struct ad7606_chip_info ad7616_info = { .max_samplerate = 1 * MEGA, - .channels = ad7616_channels, .init_delay_ms = 15, .name = "ad7616", + .bits = 16, .num_adc_channels = 16, - .num_channels = 17, .oversampling_avail = ad7616_oversampling_avail, .oversampling_num = ARRAY_SIZE(ad7616_oversampling_avail), .os_req_reset = true, @@ -373,7 +276,6 @@ static int ad7606_get_chan_config(struct iio_dev *indio_dev, int ch, { struct ad7606_state *st = iio_priv(indio_dev); unsigned int num_channels = st->chip_info->num_adc_channels; - unsigned int offset = indio_dev->num_channels - st->chip_info->num_adc_channels; struct device *dev = st->dev; int ret; @@ -389,7 +291,7 @@ static int ad7606_get_chan_config(struct iio_dev *indio_dev, int ch, continue; /* channel number (here) is from 1 to num_channels */ - if (reg < offset || reg > num_channels) { + if (reg < 1 || reg > num_channels) { dev_warn(dev, "Invalid channel number (ignoring): %d\n", reg); continue; @@ -706,8 +608,8 @@ static int ad7606_scan_direct(struct iio_dev *indio_dev, unsigned int ch, int *val) { struct ad7606_state *st = iio_priv(indio_dev); - unsigned int realbits = st->chip_info->channels[1].scan_type.realbits; const struct iio_chan_spec *chan; + unsigned int realbits; int ret; if (st->gpio_convst) { @@ -739,7 +641,9 @@ static int ad7606_scan_direct(struct iio_dev *indio_dev, unsigned int ch, if (ret) goto error_ret; - chan = &indio_dev->channels[ch + 1]; + chan = &indio_dev->channels[ch]; + realbits = chan->scan_type.realbits; + if (chan->scan_type.sign == 'u') { if (realbits > 16) *val = st->data.buf32[ch]; @@ -1284,29 +1188,84 @@ static int ad7606b_sw_mode_setup(struct iio_dev *indio_dev) return st->bops->sw_mode_config(indio_dev); } -static int ad7606_chan_scales_setup(struct iio_dev *indio_dev) +static int ad7606_probe_channels(struct iio_dev *indio_dev) { struct ad7606_state *st = iio_priv(indio_dev); - unsigned int offset = indio_dev->num_channels - st->chip_info->num_adc_channels; - struct iio_chan_spec *chans; - size_t size; - int ch, ret; - - /* Clone IIO channels, since some may be differential */ - size = indio_dev->num_channels * sizeof(*indio_dev->channels); - chans = devm_kzalloc(st->dev, size, GFP_KERNEL); - if (!chans) + struct device *dev = indio_dev->dev.parent; + struct iio_chan_spec *channels; + bool slow_bus; + int ret, i; + + slow_bus = !st->bops->iio_backend_config; + indio_dev->num_channels = st->chip_info->num_adc_channels; + + /* Slow buses also get 1 more channel for soft timestamp */ + if (slow_bus) + indio_dev->num_channels++; + + channels = devm_kcalloc(dev, indio_dev->num_channels, sizeof(*channels), + GFP_KERNEL); + if (!channels) return -ENOMEM; - memcpy(chans, indio_dev->channels, size); - indio_dev->channels = chans; + for (i = 0; i < st->chip_info->num_adc_channels; i++) { + struct iio_chan_spec *chan = &channels[i]; - for (ch = 0; ch < st->chip_info->num_adc_channels; ch++) { - ret = st->chip_info->scale_setup_cb(indio_dev, &chans[ch + offset]); + chan->type = IIO_VOLTAGE; + chan->indexed = 1; + chan->channel = i; + chan->scan_index = i; + chan->scan_type.sign = 's'; + chan->scan_type.realbits = st->chip_info->bits; + chan->scan_type.storagebits = st->chip_info->bits > 16 ? 32 : 16; + chan->scan_type.endianness = IIO_CPU; + + if (indio_dev->modes & INDIO_DIRECT_MODE) + chan->info_mask_separate |= BIT(IIO_CHAN_INFO_RAW); + + if (st->sw_mode_en) { + chan->info_mask_separate |= BIT(IIO_CHAN_INFO_SCALE); + chan->info_mask_separate_available |= + BIT(IIO_CHAN_INFO_SCALE); + + /* + * All chips with software mode support oversampling, + * so we skip the oversampling_available check. And the + * shared_by_type instead of shared_by_all on slow + * buses is for backward compatibility. + */ + if (slow_bus) + chan->info_mask_shared_by_type |= + BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO); + else + chan->info_mask_shared_by_all |= + BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO); + + chan->info_mask_shared_by_all_available |= + BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO); + } else { + chan->info_mask_shared_by_type |= + BIT(IIO_CHAN_INFO_SCALE); + + if (st->chip_info->oversampling_avail) + chan->info_mask_shared_by_all |= + BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO); + } + + if (!slow_bus) + chan->info_mask_shared_by_all |= + BIT(IIO_CHAN_INFO_SAMP_FREQ); + + ret = st->chip_info->scale_setup_cb(indio_dev, chan); if (ret) return ret; } + if (slow_bus) + channels[i] = (struct iio_chan_spec)IIO_CHAN_SOFT_TIMESTAMP(i); + + indio_dev->channels = channels; + return 0; } @@ -1338,6 +1297,11 @@ int ad7606_probe(struct device *dev, int irq, void __iomem *base_address, st->bops = bops; st->base_address = base_address; st->oversampling = 1; + st->sw_mode_en = device_property_read_bool(dev, "adi,sw-mode"); + + if (st->sw_mode_en && !chip_info->sw_setup_cb) + return dev_err_probe(dev, -EINVAL, + "Software mode is not supported for this chip\n"); ret = devm_regulator_get_enable(dev, "avcc"); if (ret) @@ -1366,10 +1330,14 @@ int ad7606_probe(struct device *dev, int irq, void __iomem *base_address, else indio_dev->info = &ad7606_info_no_os_or_range; } - indio_dev->modes = INDIO_DIRECT_MODE; + + /* AXI ADC backend doesn't support single read. */ + indio_dev->modes = st->bops->iio_backend_config ? 0 : INDIO_DIRECT_MODE; indio_dev->name = chip_info->name; - indio_dev->channels = st->chip_info->channels; - indio_dev->num_channels = st->chip_info->num_channels; + + ret = ad7606_probe_channels(indio_dev); + if (ret) + return ret; ret = ad7606_reset(st); if (ret) @@ -1460,17 +1428,11 @@ int ad7606_probe(struct device *dev, int irq, void __iomem *base_address, st->write_scale = ad7606_write_scale_hw; st->write_os = ad7606_write_os_hw; - st->sw_mode_en = st->chip_info->sw_setup_cb && - device_property_present(st->dev, "adi,sw-mode"); if (st->sw_mode_en) { indio_dev->info = &ad7606_info_sw_mode; st->chip_info->sw_setup_cb(indio_dev); } - ret = ad7606_chan_scales_setup(indio_dev); - if (ret) - return ret; - return devm_iio_device_register(dev, indio_dev); } EXPORT_SYMBOL_NS_GPL(ad7606_probe, "IIO_AD7606"); diff --git a/drivers/iio/adc/ad7606.h b/drivers/iio/adc/ad7606.h index c57a193761c9..f0b262fb4554 100644 --- a/drivers/iio/adc/ad7606.h +++ b/drivers/iio/adc/ad7606.h @@ -40,76 +40,6 @@ #define AD7606_RANGE_CH_ADDR(ch) (0x03 + ((ch) >> 1)) #define AD7606_OS_MODE 0x08 -#define AD760X_CHANNEL(num, mask_sep, mask_type, mask_all, \ - mask_sep_avail, mask_all_avail, bits) { \ - .type = IIO_VOLTAGE, \ - .indexed = 1, \ - .channel = num, \ - .info_mask_separate = mask_sep, \ - .info_mask_separate_available = \ - mask_sep_avail, \ - .info_mask_shared_by_type = mask_type, \ - .info_mask_shared_by_all = mask_all, \ - .info_mask_shared_by_all_available = \ - mask_all_avail, \ - .scan_index = num, \ - .scan_type = { \ - .sign = 's', \ - .realbits = (bits), \ - .storagebits = (bits) > 16 ? 32 : 16, \ - .endianness = IIO_CPU, \ - }, \ -} - -#define AD7606_SW_CHANNEL(num, bits) \ - AD760X_CHANNEL(num, \ - /* mask separate */ \ - BIT(IIO_CHAN_INFO_RAW) | \ - BIT(IIO_CHAN_INFO_SCALE), \ - /* mask type */ \ - BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO), \ - /* mask all */ \ - 0, \ - /* mask separate available */ \ - BIT(IIO_CHAN_INFO_SCALE), \ - /* mask all available */ \ - BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO), \ - bits) - -#define AD7605_CHANNEL(num) \ - AD760X_CHANNEL(num, BIT(IIO_CHAN_INFO_RAW), \ - BIT(IIO_CHAN_INFO_SCALE), 0, 0, 0, 16) - -#define AD7606_CHANNEL(num, bits) \ - AD760X_CHANNEL(num, BIT(IIO_CHAN_INFO_RAW), \ - BIT(IIO_CHAN_INFO_SCALE), \ - BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO), \ - 0, 0, bits) - -#define AD7616_CHANNEL(num) AD7606_SW_CHANNEL(num, 16) - -#define AD7606_BI_CHANNEL(num) \ - AD760X_CHANNEL(num, 0, \ - BIT(IIO_CHAN_INFO_SCALE), \ - BIT(IIO_CHAN_INFO_SAMP_FREQ) | \ - BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO), \ - 0, 0, 16) - -#define AD7606_BI_SW_CHANNEL(num) \ - AD760X_CHANNEL(num, \ - /* mask separate */ \ - BIT(IIO_CHAN_INFO_SCALE), \ - /* mask type */ \ - 0, \ - /* mask all */ \ - BIT(IIO_CHAN_INFO_SAMP_FREQ) | \ - BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO), \ - /* mask separate available */ \ - BIT(IIO_CHAN_INFO_SCALE), \ - /* mask all available */ \ - BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO), \ - 16) - struct ad7606_state; typedef int (*ad7606_scale_setup_cb_t)(struct iio_dev *indio_dev, @@ -118,11 +48,10 @@ typedef int (*ad7606_sw_setup_cb_t)(struct iio_dev *indio_dev); /** * struct ad7606_chip_info - chip specific information - * @channels: channel specification * @max_samplerate: maximum supported sample rate * @name: device name + * @bits: data width in bits * @num_adc_channels: the number of physical voltage inputs - * @num_channels: number of IIO channels * @scale_setup_cb: callback to setup the scales for each channel * @sw_setup_cb: callback to setup the software mode if available. * @oversampling_avail: pointer to the array which stores the available @@ -133,11 +62,10 @@ typedef int (*ad7606_sw_setup_cb_t)(struct iio_dev *indio_dev); * after a restart */ struct ad7606_chip_info { - const struct iio_chan_spec *channels; unsigned int max_samplerate; const char *name; + unsigned int bits; unsigned int num_adc_channels; - unsigned int num_channels; ad7606_scale_setup_cb_t scale_setup_cb; ad7606_sw_setup_cb_t sw_setup_cb; const unsigned int *oversampling_avail; diff --git a/drivers/iio/adc/ad7606_par.c b/drivers/iio/adc/ad7606_par.c index 335fb481bfde..e33b07ab5eac 100644 --- a/drivers/iio/adc/ad7606_par.c +++ b/drivers/iio/adc/ad7606_par.c @@ -21,28 +21,6 @@ #include "ad7606.h" #include "ad7606_bus_iface.h" -static const struct iio_chan_spec ad7606b_bi_channels[] = { - AD7606_BI_CHANNEL(0), - AD7606_BI_CHANNEL(1), - AD7606_BI_CHANNEL(2), - AD7606_BI_CHANNEL(3), - AD7606_BI_CHANNEL(4), - AD7606_BI_CHANNEL(5), - AD7606_BI_CHANNEL(6), - AD7606_BI_CHANNEL(7), -}; - -static const struct iio_chan_spec ad7606b_bi_sw_channels[] = { - AD7606_BI_SW_CHANNEL(0), - AD7606_BI_SW_CHANNEL(1), - AD7606_BI_SW_CHANNEL(2), - AD7606_BI_SW_CHANNEL(3), - AD7606_BI_SW_CHANNEL(4), - AD7606_BI_SW_CHANNEL(5), - AD7606_BI_SW_CHANNEL(6), - AD7606_BI_SW_CHANNEL(7), -}; - static int ad7606_par_bus_update_scan_mode(struct iio_dev *indio_dev, const unsigned long *scan_mask) { @@ -94,9 +72,6 @@ static int ad7606_par_bus_setup_iio_backend(struct device *dev, return ret; } - indio_dev->channels = ad7606b_bi_channels; - indio_dev->num_channels = 8; - return 0; } @@ -120,19 +95,11 @@ static int ad7606_par_bus_reg_write(struct ad7606_state *st, unsigned int addr, return pdata->bus_reg_write(st->back, addr, val); } -static int ad7606_par_bus_sw_mode_config(struct iio_dev *indio_dev) -{ - indio_dev->channels = ad7606b_bi_sw_channels; - - return 0; -} - static const struct ad7606_bus_ops ad7606_bi_bops = { .iio_backend_config = ad7606_par_bus_setup_iio_backend, .update_scan_mode = ad7606_par_bus_update_scan_mode, .reg_read = ad7606_par_bus_reg_read, .reg_write = ad7606_par_bus_reg_write, - .sw_mode_config = ad7606_par_bus_sw_mode_config, }; static int ad7606_par16_read_block(struct device *dev, diff --git a/drivers/iio/adc/ad7606_spi.c b/drivers/iio/adc/ad7606_spi.c index 1abaf8626206..b2b975fb7fea 100644 --- a/drivers/iio/adc/ad7606_spi.c +++ b/drivers/iio/adc/ad7606_spi.c @@ -15,50 +15,6 @@ #define MAX_SPI_FREQ_HZ 23500000 /* VDRIVE above 4.75 V */ -static const struct iio_chan_spec ad7616_sw_channels[] = { - IIO_CHAN_SOFT_TIMESTAMP(16), - AD7616_CHANNEL(0), - AD7616_CHANNEL(1), - AD7616_CHANNEL(2), - AD7616_CHANNEL(3), - AD7616_CHANNEL(4), - AD7616_CHANNEL(5), - AD7616_CHANNEL(6), - AD7616_CHANNEL(7), - AD7616_CHANNEL(8), - AD7616_CHANNEL(9), - AD7616_CHANNEL(10), - AD7616_CHANNEL(11), - AD7616_CHANNEL(12), - AD7616_CHANNEL(13), - AD7616_CHANNEL(14), - AD7616_CHANNEL(15), -}; - -static const struct iio_chan_spec ad7606b_sw_channels[] = { - IIO_CHAN_SOFT_TIMESTAMP(8), - AD7606_SW_CHANNEL(0, 16), - AD7606_SW_CHANNEL(1, 16), - AD7606_SW_CHANNEL(2, 16), - AD7606_SW_CHANNEL(3, 16), - AD7606_SW_CHANNEL(4, 16), - AD7606_SW_CHANNEL(5, 16), - AD7606_SW_CHANNEL(6, 16), - AD7606_SW_CHANNEL(7, 16), -}; - -static const struct iio_chan_spec ad7606c_18_sw_channels[] = { - IIO_CHAN_SOFT_TIMESTAMP(8), - AD7606_SW_CHANNEL(0, 18), - AD7606_SW_CHANNEL(1, 18), - AD7606_SW_CHANNEL(2, 18), - AD7606_SW_CHANNEL(3, 18), - AD7606_SW_CHANNEL(4, 18), - AD7606_SW_CHANNEL(5, 18), - AD7606_SW_CHANNEL(6, 18), - AD7606_SW_CHANNEL(7, 18), -}; - static u16 ad7616_spi_rd_wr_cmd(int addr, char is_write_op) { /* @@ -160,48 +116,13 @@ static int ad7606_spi_reg_write(struct ad7606_state *st, return spi_write(spi, &st->d16[0], sizeof(st->d16[0])); } -static int ad7616_sw_mode_config(struct iio_dev *indio_dev) -{ - /* - * Scale can be configured individually for each channel - * in software mode. - */ - indio_dev->channels = ad7616_sw_channels; - - return 0; -} - static int ad7606b_sw_mode_config(struct iio_dev *indio_dev) { struct ad7606_state *st = iio_priv(indio_dev); - int ret; /* Configure device spi to output on a single channel */ - ret = st->bops->reg_write(st, AD7606_CONFIGURATION_REGISTER, - AD7606_SINGLE_DOUT); - if (ret) - return ret; - - /* - * Scale can be configured individually for each channel - * in software mode. - */ - indio_dev->channels = ad7606b_sw_channels; - - return 0; -} - -static int ad7606c_18_sw_mode_config(struct iio_dev *indio_dev) -{ - int ret; - - ret = ad7606b_sw_mode_config(indio_dev); - if (ret) - return ret; - - indio_dev->channels = ad7606c_18_sw_channels; - - return 0; + return st->bops->reg_write(st, AD7606_CONFIGURATION_REGISTER, + AD7606_SINGLE_DOUT); } static const struct ad7606_bus_ops ad7606_spi_bops = { @@ -221,7 +142,6 @@ static const struct ad7606_bus_ops ad7616_spi_bops = { .reg_read = ad7606_spi_reg_read, .reg_write = ad7606_spi_reg_write, .rd_wr_cmd = ad7616_spi_rd_wr_cmd, - .sw_mode_config = ad7616_sw_mode_config, }; static const struct ad7606_bus_ops ad7606b_spi_bops = { @@ -237,7 +157,7 @@ static const struct ad7606_bus_ops ad7606c_18_spi_bops = { .reg_read = ad7606_spi_reg_read, .reg_write = ad7606_spi_reg_write, .rd_wr_cmd = ad7606b_spi_rd_wr_cmd, - .sw_mode_config = ad7606c_18_sw_mode_config, + .sw_mode_config = ad7606b_sw_mode_config, }; static const struct ad7606_bus_info ad7605_4_bus_info = { -- cgit v1.2.3 From dc0e07126ed47f0484d4c0c51c74b2515ec5e059 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Tue, 18 Mar 2025 17:52:18 -0500 Subject: iio: adc: ad7606_par: add ad7606c chips MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add lookup table entries for ad7606c-16 and ad7606c-18 chips. Reviewed-by: Nuno Sá Signed-off-by: David Lechner Link: https://patch.msgid.link/20250318-iio-adc-ad7606-improvements-v2-10-4b605427774c@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7606_par.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/iio/adc/ad7606_par.c b/drivers/iio/adc/ad7606_par.c index e33b07ab5eac..634852c4bbd2 100644 --- a/drivers/iio/adc/ad7606_par.c +++ b/drivers/iio/adc/ad7606_par.c @@ -222,6 +222,8 @@ static const struct platform_device_id ad7606_driver_ids[] = { { .name = "ad7606-6", .driver_data = (kernel_ulong_t)&ad7606_6_info, }, { .name = "ad7606-8", .driver_data = (kernel_ulong_t)&ad7606_8_info, }, { .name = "ad7606b", .driver_data = (kernel_ulong_t)&ad7606b_info, }, + { .name = "ad7606c-16", .driver_data = (kernel_ulong_t)&ad7606c_16_info }, + { .name = "ad7606c-18", .driver_data = (kernel_ulong_t)&ad7606c_18_info }, { .name = "ad7607", .driver_data = (kernel_ulong_t)&ad7607_info, }, { .name = "ad7608", .driver_data = (kernel_ulong_t)&ad7608_info, }, { .name = "ad7609", .driver_data = (kernel_ulong_t)&ad7609_info, }, @@ -235,6 +237,8 @@ static const struct of_device_id ad7606_of_match[] = { { .compatible = "adi,ad7606-6", .data = &ad7606_6_info }, { .compatible = "adi,ad7606-8", .data = &ad7606_8_info }, { .compatible = "adi,ad7606b", .data = &ad7606b_info }, + { .compatible = "adi,ad7606c-16", .data = &ad7606c_16_info }, + { .compatible = "adi,ad7606c-18", .data = &ad7606c_18_info }, { .compatible = "adi,ad7607", .data = &ad7607_info }, { .compatible = "adi,ad7608", .data = &ad7608_info }, { .compatible = "adi,ad7609", .data = &ad7609_info }, -- cgit v1.2.3 From c72ada9978d218874de768f729e673557bf9f330 Mon Sep 17 00:00:00 2001 From: "Gustavo A. R. Silva" Date: Tue, 18 Mar 2025 20:31:05 +1030 Subject: iio: proximity: cros_ec_mkbp_proximity: Avoid -Wflex-array-member-not-at-end warning -Wflex-array-member-not-at-end was introduced in GCC-14, and we are getting ready to enable it, globally. Use the `DEFINE_RAW_FLEX()` helper for an on-stack definition of a flexible structure where the size of the flexible-array member is known at compile-time, and refactor the rest of the code, accordingly. So, with these changes, fix the following warning: drivers/iio/proximity/cros_ec_mkbp_proximity.c:63:40: warning: structure containing a flexible array member is not at the end of another structure [-Wflex-array-member-not-at-end] Signed-off-by: Gustavo A. R. Silva Reviewed-by: Tzung-Bi Shih Link: https://patch.msgid.link/Z9lEYdPPIyiRGm36@kspp Signed-off-by: Jonathan Cameron --- drivers/iio/proximity/cros_ec_mkbp_proximity.c | 15 +++++---------- 1 file changed, 5 insertions(+), 10 deletions(-) diff --git a/drivers/iio/proximity/cros_ec_mkbp_proximity.c b/drivers/iio/proximity/cros_ec_mkbp_proximity.c index 667369be0555..d2ddb7d45ec2 100644 --- a/drivers/iio/proximity/cros_ec_mkbp_proximity.c +++ b/drivers/iio/proximity/cros_ec_mkbp_proximity.c @@ -59,16 +59,11 @@ static int cros_ec_mkbp_proximity_parse_state(const void *data) static int cros_ec_mkbp_proximity_query(struct cros_ec_device *ec_dev, int *state) { - struct { - struct cros_ec_command msg; - union { - struct ec_params_mkbp_info params; - u32 switches; - }; - } __packed buf = { }; - struct ec_params_mkbp_info *params = &buf.params; - struct cros_ec_command *msg = &buf.msg; - u32 *switches = &buf.switches; + DEFINE_RAW_FLEX(struct cros_ec_command, buf, data, + MAX(sizeof(u32), sizeof(struct ec_params_mkbp_info))); + struct ec_params_mkbp_info *params = (struct ec_params_mkbp_info *)buf->data; + struct cros_ec_command *msg = buf; + u32 *switches = (u32 *)buf->data; size_t insize = sizeof(*switches); int ret; -- cgit v1.2.3 From 0d0f3bfb4735d08171f82d9df2ccb6b61778878d Mon Sep 17 00:00:00 2001 From: "Gustavo A. R. Silva" Date: Tue, 18 Mar 2025 20:33:20 +1030 Subject: iio: cros_ec: Avoid -Wflex-array-member-not-at-end warning -Wflex-array-member-not-at-end was introduced in GCC-14, and we are getting ready to enable it, globally. Use the `DEFINE_RAW_FLEX()` helper for an on-stack definition of a flexible structure where the size of the flexible-array member is known at compile-time, and refactor the rest of the code, accordingly. So, with these changes, fix the following warning: drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c:39:40: warning: structure containing a flexible array member is not at the end of another structure [-Wflex-array-member-not-at-end] Signed-off-by: Gustavo A. R. Silva Reviewed-by: Tzung-Bi Shih Link: https://patch.msgid.link/Z9lE6IVDeC5lnChN@kspp Signed-off-by: Jonathan Cameron --- .../common/cros_ec_sensors/cros_ec_sensors_core.c | 28 +++++++++------------- 1 file changed, 11 insertions(+), 17 deletions(-) diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c index 7751d6f69b12..40d5b10c74e0 100644 --- a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c +++ b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c @@ -34,25 +34,19 @@ static int cros_ec_get_host_cmd_version_mask(struct cros_ec_device *ec_dev, u16 cmd_offset, u16 cmd, u32 *mask) { + DEFINE_RAW_FLEX(struct cros_ec_command, buf, data, + MAX(sizeof(struct ec_response_get_cmd_versions), + sizeof(struct ec_params_get_cmd_versions))); int ret; - struct { - struct cros_ec_command msg; - union { - struct ec_params_get_cmd_versions params; - struct ec_response_get_cmd_versions resp; - }; - } __packed buf = { - .msg = { - .command = EC_CMD_GET_CMD_VERSIONS + cmd_offset, - .insize = sizeof(struct ec_response_get_cmd_versions), - .outsize = sizeof(struct ec_params_get_cmd_versions) - }, - .params = {.cmd = cmd} - }; - - ret = cros_ec_cmd_xfer_status(ec_dev, &buf.msg); + + buf->command = EC_CMD_GET_CMD_VERSIONS + cmd_offset; + buf->insize = sizeof(struct ec_response_get_cmd_versions); + buf->outsize = sizeof(struct ec_params_get_cmd_versions); + ((struct ec_params_get_cmd_versions *)buf->data)->cmd = cmd; + + ret = cros_ec_cmd_xfer_status(ec_dev, buf); if (ret >= 0) - *mask = buf.resp.version_mask; + *mask = ((struct ec_response_get_cmd_versions *)buf->data)->version_mask; return ret; } -- cgit v1.2.3 From cfed1969fcfe69d0b0db780efe2b6fedeaf7f2b3 Mon Sep 17 00:00:00 2001 From: Olivier Moysan Date: Fri, 14 Mar 2025 18:14:46 +0100 Subject: iio: trigger: stm32-lptimer: add support for stm32mp25 Add support for STM32MP25 SoC. Use newly introduced compatible to handle this new HW variant. Add new trigger definitions that can be used by the stm32 analog-to-digital converter. Use compatible data to identify them. Signed-off-by: Olivier Moysan Signed-off-by: Fabrice Gasnier Link: https://patch.msgid.link/20250314171451.3497789-4-fabrice.gasnier@foss.st.com Signed-off-by: Jonathan Cameron --- drivers/iio/trigger/stm32-lptimer-trigger.c | 75 +++++++++++++++++++++------ include/linux/iio/timer/stm32-lptim-trigger.h | 9 ++++ 2 files changed, 67 insertions(+), 17 deletions(-) diff --git a/drivers/iio/trigger/stm32-lptimer-trigger.c b/drivers/iio/trigger/stm32-lptimer-trigger.c index f1e18913236a..3dcc8d2fe093 100644 --- a/drivers/iio/trigger/stm32-lptimer-trigger.c +++ b/drivers/iio/trigger/stm32-lptimer-trigger.c @@ -16,16 +16,43 @@ #include #include -/* List Low-Power Timer triggers */ -static const char * const stm32_lptim_triggers[] = { - LPTIM1_OUT, - LPTIM2_OUT, - LPTIM3_OUT, +/* Maximum triggers + one trailing null entry to indicate the end of array */ +#define MAX_TRIGGERS 3 + +struct stm32_lptim_cfg { + const char * const (*triggers)[MAX_TRIGGERS]; + unsigned int nb_triggers; +}; + +/* List Low-Power Timer triggers for H7, MP13, MP15 */ +static const char * const stm32_lptim_triggers[][MAX_TRIGGERS] = { + { LPTIM1_OUT,}, + { LPTIM2_OUT,}, + { LPTIM3_OUT,}, +}; + +/* List Low-Power Timer triggers for STM32MP25 */ +static const char * const stm32mp25_lptim_triggers[][MAX_TRIGGERS] = { + { LPTIM1_CH1, LPTIM1_CH2, }, + { LPTIM2_CH1, LPTIM2_CH2, }, + { LPTIM3_CH1,}, + { LPTIM4_CH1,}, + { LPTIM5_OUT,}, +}; + +static const struct stm32_lptim_cfg stm32mp15_lptim_cfg = { + .triggers = stm32_lptim_triggers, + .nb_triggers = ARRAY_SIZE(stm32_lptim_triggers), +}; + +static const struct stm32_lptim_cfg stm32mp25_lptim_cfg = { + .triggers = stm32mp25_lptim_triggers, + .nb_triggers = ARRAY_SIZE(stm32mp25_lptim_triggers), }; struct stm32_lptim_trigger { struct device *dev; - const char *trg; + const char * const *triggers; }; static int stm32_lptim_validate_device(struct iio_trigger *trig, @@ -56,22 +83,33 @@ EXPORT_SYMBOL(is_stm32_lptim_trigger); static int stm32_lptim_setup_trig(struct stm32_lptim_trigger *priv) { - struct iio_trigger *trig; + const char * const *cur = priv->triggers; + int ret; - trig = devm_iio_trigger_alloc(priv->dev, "%s", priv->trg); - if (!trig) - return -ENOMEM; + while (cur && *cur) { + struct iio_trigger *trig; - trig->dev.parent = priv->dev->parent; - trig->ops = &stm32_lptim_trigger_ops; - iio_trigger_set_drvdata(trig, priv); + trig = devm_iio_trigger_alloc(priv->dev, "%s", *cur); + if (!trig) + return -ENOMEM; - return devm_iio_trigger_register(priv->dev, trig); + trig->dev.parent = priv->dev->parent; + trig->ops = &stm32_lptim_trigger_ops; + iio_trigger_set_drvdata(trig, priv); + + ret = devm_iio_trigger_register(priv->dev, trig); + if (ret) + return ret; + cur++; + } + + return 0; } static int stm32_lptim_trigger_probe(struct platform_device *pdev) { struct stm32_lptim_trigger *priv; + struct stm32_lptim_cfg const *lptim_cfg; u32 index; priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); @@ -81,17 +119,20 @@ static int stm32_lptim_trigger_probe(struct platform_device *pdev) if (device_property_read_u32(&pdev->dev, "reg", &index)) return -EINVAL; - if (index >= ARRAY_SIZE(stm32_lptim_triggers)) + lptim_cfg = device_get_match_data(&pdev->dev); + + if (index >= lptim_cfg->nb_triggers) return -EINVAL; priv->dev = &pdev->dev; - priv->trg = stm32_lptim_triggers[index]; + priv->triggers = lptim_cfg->triggers[index]; return stm32_lptim_setup_trig(priv); } static const struct of_device_id stm32_lptim_trig_of_match[] = { - { .compatible = "st,stm32-lptimer-trigger", }, + { .compatible = "st,stm32-lptimer-trigger", .data = &stm32mp15_lptim_cfg }, + { .compatible = "st,stm32mp25-lptimer-trigger", .data = &stm32mp25_lptim_cfg}, {}, }; MODULE_DEVICE_TABLE(of, stm32_lptim_trig_of_match); diff --git a/include/linux/iio/timer/stm32-lptim-trigger.h b/include/linux/iio/timer/stm32-lptim-trigger.h index a34dcf6a6001..ce3cf0addb2e 100644 --- a/include/linux/iio/timer/stm32-lptim-trigger.h +++ b/include/linux/iio/timer/stm32-lptim-trigger.h @@ -14,6 +14,15 @@ #define LPTIM1_OUT "lptim1_out" #define LPTIM2_OUT "lptim2_out" #define LPTIM3_OUT "lptim3_out" +#define LPTIM4_OUT "lptim4_out" +#define LPTIM5_OUT "lptim5_out" + +#define LPTIM1_CH1 "lptim1_ch1" +#define LPTIM1_CH2 "lptim1_ch2" +#define LPTIM2_CH1 "lptim2_ch1" +#define LPTIM2_CH2 "lptim2_ch2" +#define LPTIM3_CH1 "lptim3_ch1" +#define LPTIM4_CH1 "lptim4_ch1" #if IS_REACHABLE(CONFIG_IIO_STM32_LPTIMER_TRIGGER) bool is_stm32_lptim_trigger(struct iio_trigger *trig); -- cgit v1.2.3 From 16d92b70b261882a1360f7c25a6bc8b92ae52a6e Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 9 Mar 2025 16:58:12 +0000 Subject: iio: adc: vf610: Move claim of direct mode to caller of vf610_read_sample and use guard(mutex) These two changes allow direct returns in all paths, improving code readablity. Cc: Frank Li Reviewed-by: David Lechner Link: https://patch.msgid.link/20250309165819.1346684-2-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/adc/vf610_adc.c | 37 ++++++++++++++----------------------- 1 file changed, 14 insertions(+), 23 deletions(-) diff --git a/drivers/iio/adc/vf610_adc.c b/drivers/iio/adc/vf610_adc.c index 513365d42aa5..57a22e31cfc7 100644 --- a/drivers/iio/adc/vf610_adc.c +++ b/drivers/iio/adc/vf610_adc.c @@ -11,6 +11,7 @@ #include #include #include +#include #include #include #include @@ -630,36 +631,29 @@ static const struct attribute_group vf610_attribute_group = { .attrs = vf610_attributes, }; -static int vf610_read_sample(struct iio_dev *indio_dev, +static int vf610_read_sample(struct vf610_adc *info, struct iio_chan_spec const *chan, int *val) { - struct vf610_adc *info = iio_priv(indio_dev); unsigned int hc_cfg; int ret; - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; - - mutex_lock(&info->lock); + guard(mutex)(&info->lock); reinit_completion(&info->completion); hc_cfg = VF610_ADC_ADCHC(chan->channel); hc_cfg |= VF610_ADC_AIEN; writel(hc_cfg, info->regs + VF610_REG_ADC_HC0); ret = wait_for_completion_interruptible_timeout(&info->completion, VF610_ADC_TIMEOUT); - if (ret == 0) { - ret = -ETIMEDOUT; - goto out_unlock; - } + if (ret == 0) + return -ETIMEDOUT; if (ret < 0) - goto out_unlock; + return ret; switch (chan->type) { case IIO_VOLTAGE: *val = info->value; - break; + return 0; case IIO_TEMP: /* * Calculate in degree Celsius times 1000 @@ -669,17 +663,10 @@ static int vf610_read_sample(struct iio_dev *indio_dev, *val = 25000 - ((int)info->value - VF610_VTEMP25_3V3) * 1000000 / VF610_TEMP_SLOPE_COEFF; - break; + return 0; default: - ret = -EINVAL; - break; + return -EINVAL; } - -out_unlock: - mutex_unlock(&info->lock); - iio_device_release_direct_mode(indio_dev); - - return ret; } static int vf610_read_raw(struct iio_dev *indio_dev, @@ -694,7 +681,11 @@ static int vf610_read_raw(struct iio_dev *indio_dev, switch (mask) { case IIO_CHAN_INFO_RAW: case IIO_CHAN_INFO_PROCESSED: - ret = vf610_read_sample(indio_dev, chan, val); + ret = iio_device_claim_direct_mode(indio_dev); + if (ret) + return ret; + ret = vf610_read_sample(info, chan, val); + iio_device_release_direct_mode(indio_dev); if (ret < 0) return ret; -- cgit v1.2.3 From 5fe8331928c6138292b81d4761a8370d75b393fa Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 9 Mar 2025 16:58:13 +0000 Subject: iio: adc: vf610: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Cc: Frank Li Reviewed-by: David Lechner Link: https://patch.msgid.link/20250309165819.1346684-3-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/adc/vf610_adc.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/iio/adc/vf610_adc.c b/drivers/iio/adc/vf610_adc.c index 57a22e31cfc7..f506ca4150b1 100644 --- a/drivers/iio/adc/vf610_adc.c +++ b/drivers/iio/adc/vf610_adc.c @@ -681,11 +681,10 @@ static int vf610_read_raw(struct iio_dev *indio_dev, switch (mask) { case IIO_CHAN_INFO_RAW: case IIO_CHAN_INFO_PROCESSED: - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; ret = vf610_read_sample(info, chan, val); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); if (ret < 0) return ret; -- cgit v1.2.3 From d36adc77ee435d809fd9ba509e79c189be968050 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 9 Mar 2025 16:58:14 +0000 Subject: iio: adc: ti-ads1100: Use guard(mutex) to allow direct returns Use of automated lock release simplifies the code. Cc: Mike Looijmans Reviewed-by: David Lechner Link: https://patch.msgid.link/20250309165819.1346684-4-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ti-ads1100.c | 39 ++++++++++++++------------------------- 1 file changed, 14 insertions(+), 25 deletions(-) diff --git a/drivers/iio/adc/ti-ads1100.c b/drivers/iio/adc/ti-ads1100.c index 1e46f07a9ca6..0519f8afb033 100644 --- a/drivers/iio/adc/ti-ads1100.c +++ b/drivers/iio/adc/ti-ads1100.c @@ -10,6 +10,7 @@ #include #include +#include #include #include #include @@ -219,36 +220,31 @@ static int ads1100_read_raw(struct iio_dev *indio_dev, int ret; struct ads1100_data *data = iio_priv(indio_dev); - mutex_lock(&data->lock); + guard(mutex)(&data->lock); switch (mask) { case IIO_CHAN_INFO_RAW: ret = iio_device_claim_direct_mode(indio_dev); if (ret) - break; + return ret; ret = ads1100_get_adc_result(data, chan->address, val); - if (ret >= 0) - ret = IIO_VAL_INT; iio_device_release_direct_mode(indio_dev); - break; + if (ret < 0) + return ret; + + return IIO_VAL_INT; case IIO_CHAN_INFO_SCALE: /* full-scale is the supply voltage in millivolts */ *val = ads1100_get_vdd_millivolts(data); *val2 = 15 + FIELD_GET(ADS1100_PGA_MASK, data->config); - ret = IIO_VAL_FRACTIONAL_LOG2; - break; + return IIO_VAL_FRACTIONAL_LOG2; case IIO_CHAN_INFO_SAMP_FREQ: *val = ads1100_data_rate[FIELD_GET(ADS1100_DR_MASK, data->config)]; - ret = IIO_VAL_INT; - break; + return IIO_VAL_INT; default: - ret = -EINVAL; - break; + return -EINVAL; } - mutex_unlock(&data->lock); - - return ret; } static int ads1100_write_raw(struct iio_dev *indio_dev, @@ -256,23 +252,16 @@ static int ads1100_write_raw(struct iio_dev *indio_dev, int val2, long mask) { struct ads1100_data *data = iio_priv(indio_dev); - int ret; - mutex_lock(&data->lock); + guard(mutex)(&data->lock); switch (mask) { case IIO_CHAN_INFO_SCALE: - ret = ads1100_set_scale(data, val, val2); - break; + return ads1100_set_scale(data, val, val2); case IIO_CHAN_INFO_SAMP_FREQ: - ret = ads1100_set_data_rate(data, chan->address, val); - break; + return ads1100_set_data_rate(data, chan->address, val); default: - ret = -EINVAL; - break; + return -EINVAL; } - mutex_unlock(&data->lock); - - return ret; } static const struct iio_info ads1100_info = { -- cgit v1.2.3 From 3ba3800286bb8881d323659fd019cf6b746580d9 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 9 Mar 2025 16:58:15 +0000 Subject: iio: adc: ti-ads1100: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Cc: Mike Looijmans Reviewed-by: David Lechner Link: https://patch.msgid.link/20250309165819.1346684-5-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ti-ads1100.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/iio/adc/ti-ads1100.c b/drivers/iio/adc/ti-ads1100.c index 0519f8afb033..b0790e300b18 100644 --- a/drivers/iio/adc/ti-ads1100.c +++ b/drivers/iio/adc/ti-ads1100.c @@ -223,12 +223,11 @@ static int ads1100_read_raw(struct iio_dev *indio_dev, guard(mutex)(&data->lock); switch (mask) { case IIO_CHAN_INFO_RAW: - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; ret = ads1100_get_adc_result(data, chan->address, val); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); if (ret < 0) return ret; -- cgit v1.2.3 From 5655ba5ada999d08ff3e0c75e3c3ca9b0cd97ed2 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 9 Mar 2025 16:58:16 +0000 Subject: iio: adc: ti-ads1015: Use guard(mutex) and factor out code for INFO_RAW By use of automatic lock release and introducing a new utility function to handle the core activity of reading the ADC channel, many more complex code flows can be replaced by direct returns. Cc: Marek Vasut Reviewed-by: David Lechner Link: https://patch.msgid.link/20250309165819.1346684-6-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ti-ads1015.c | 162 +++++++++++++++++-------------------------- 1 file changed, 64 insertions(+), 98 deletions(-) diff --git a/drivers/iio/adc/ti-ads1015.c b/drivers/iio/adc/ti-ads1015.c index 4355726b373a..71198249f517 100644 --- a/drivers/iio/adc/ti-ads1015.c +++ b/drivers/iio/adc/ti-ads1015.c @@ -12,6 +12,7 @@ */ #include +#include #include #include #include @@ -533,6 +534,31 @@ static int ads1015_read_avail(struct iio_dev *indio_dev, } } +static int __ads1015_read_info_raw(struct ads1015_data *data, + struct iio_chan_spec const *chan, int *val) +{ + int ret; + + if (ads1015_event_channel_enabled(data) && + data->event_channel != chan->address) + return -EBUSY; + + ret = ads1015_set_power_state(data, true); + if (ret < 0) + return ret; + + ret = ads1015_get_adc_result(data, chan->address, val); + if (ret < 0) { + ads1015_set_power_state(data, false); + return ret; + } + + *val = sign_extend32(*val >> chan->scan_type.shift, + chan->scan_type.realbits - 1); + + return ads1015_set_power_state(data, false); +} + static int ads1015_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long mask) @@ -540,58 +566,30 @@ static int ads1015_read_raw(struct iio_dev *indio_dev, int ret, idx; struct ads1015_data *data = iio_priv(indio_dev); - mutex_lock(&data->lock); + guard(mutex)(&data->lock); switch (mask) { case IIO_CHAN_INFO_RAW: ret = iio_device_claim_direct_mode(indio_dev); if (ret) - break; - - if (ads1015_event_channel_enabled(data) && - data->event_channel != chan->address) { - ret = -EBUSY; - goto release_direct; - } - - ret = ads1015_set_power_state(data, true); - if (ret < 0) - goto release_direct; - - ret = ads1015_get_adc_result(data, chan->address, val); - if (ret < 0) { - ads1015_set_power_state(data, false); - goto release_direct; - } - - *val = sign_extend32(*val >> chan->scan_type.shift, - chan->scan_type.realbits - 1); - - ret = ads1015_set_power_state(data, false); - if (ret < 0) - goto release_direct; - - ret = IIO_VAL_INT; -release_direct: + return ret; + ret = __ads1015_read_info_raw(data, chan, val); iio_device_release_direct_mode(indio_dev); - break; + if (ret) + return ret; + + return IIO_VAL_INT; case IIO_CHAN_INFO_SCALE: idx = data->channel_data[chan->address].pga; *val = ads1015_fullscale_range[idx]; *val2 = chan->scan_type.realbits - 1; - ret = IIO_VAL_FRACTIONAL_LOG2; - break; + return IIO_VAL_FRACTIONAL_LOG2; case IIO_CHAN_INFO_SAMP_FREQ: idx = data->channel_data[chan->address].data_rate; *val = data->chip->data_rate[idx]; - ret = IIO_VAL_INT; - break; + return IIO_VAL_INT; default: - ret = -EINVAL; - break; + return -EINVAL; } - mutex_unlock(&data->lock); - - return ret; } static int ads1015_write_raw(struct iio_dev *indio_dev, @@ -599,23 +597,16 @@ static int ads1015_write_raw(struct iio_dev *indio_dev, int val2, long mask) { struct ads1015_data *data = iio_priv(indio_dev); - int ret; - mutex_lock(&data->lock); + guard(mutex)(&data->lock); switch (mask) { case IIO_CHAN_INFO_SCALE: - ret = ads1015_set_scale(data, chan, val, val2); - break; + return ads1015_set_scale(data, chan, val, val2); case IIO_CHAN_INFO_SAMP_FREQ: - ret = ads1015_set_data_rate(data, chan->address, val); - break; + return ads1015_set_data_rate(data, chan->address, val); default: - ret = -EINVAL; - break; + return -EINVAL; } - mutex_unlock(&data->lock); - - return ret; } static int ads1015_read_event(struct iio_dev *indio_dev, @@ -624,20 +615,18 @@ static int ads1015_read_event(struct iio_dev *indio_dev, int *val2) { struct ads1015_data *data = iio_priv(indio_dev); - int ret; unsigned int comp_queue; int period; int dr; - mutex_lock(&data->lock); + guard(mutex)(&data->lock); switch (info) { case IIO_EV_INFO_VALUE: *val = (dir == IIO_EV_DIR_RISING) ? data->thresh_data[chan->address].high_thresh : data->thresh_data[chan->address].low_thresh; - ret = IIO_VAL_INT; - break; + return IIO_VAL_INT; case IIO_EV_INFO_PERIOD: dr = data->channel_data[chan->address].data_rate; comp_queue = data->thresh_data[chan->address].comp_queue; @@ -646,16 +635,10 @@ static int ads1015_read_event(struct iio_dev *indio_dev, *val = period / USEC_PER_SEC; *val2 = period % USEC_PER_SEC; - ret = IIO_VAL_INT_PLUS_MICRO; - break; + return IIO_VAL_INT_PLUS_MICRO; default: - ret = -EINVAL; - break; + return -EINVAL; } - - mutex_unlock(&data->lock); - - return ret; } static int ads1015_write_event(struct iio_dev *indio_dev, @@ -666,24 +649,22 @@ static int ads1015_write_event(struct iio_dev *indio_dev, struct ads1015_data *data = iio_priv(indio_dev); const int *data_rate = data->chip->data_rate; int realbits = chan->scan_type.realbits; - int ret = 0; long long period; int i; int dr; - mutex_lock(&data->lock); + guard(mutex)(&data->lock); switch (info) { case IIO_EV_INFO_VALUE: - if (val >= 1 << (realbits - 1) || val < -1 << (realbits - 1)) { - ret = -EINVAL; - break; - } + if (val >= 1 << (realbits - 1) || val < -1 << (realbits - 1)) + return -EINVAL; + if (dir == IIO_EV_DIR_RISING) data->thresh_data[chan->address].high_thresh = val; else data->thresh_data[chan->address].low_thresh = val; - break; + return 0; case IIO_EV_INFO_PERIOD: dr = data->channel_data[chan->address].data_rate; period = val * USEC_PER_SEC + val2; @@ -694,15 +675,10 @@ static int ads1015_write_event(struct iio_dev *indio_dev, break; } data->thresh_data[chan->address].comp_queue = i; - break; + return 0; default: - ret = -EINVAL; - break; + return -EINVAL; } - - mutex_unlock(&data->lock); - - return ret; } static int ads1015_read_event_config(struct iio_dev *indio_dev, @@ -710,25 +686,19 @@ static int ads1015_read_event_config(struct iio_dev *indio_dev, enum iio_event_direction dir) { struct ads1015_data *data = iio_priv(indio_dev); - int ret = 0; - mutex_lock(&data->lock); - if (data->event_channel == chan->address) { - switch (dir) { - case IIO_EV_DIR_RISING: - ret = 1; - break; - case IIO_EV_DIR_EITHER: - ret = (data->comp_mode == ADS1015_CFG_COMP_MODE_WINDOW); - break; - default: - ret = -EINVAL; - break; - } - } - mutex_unlock(&data->lock); + guard(mutex)(&data->lock); + if (data->event_channel != chan->address) + return 0; - return ret; + switch (dir) { + case IIO_EV_DIR_RISING: + return 1; + case IIO_EV_DIR_EITHER: + return (data->comp_mode == ADS1015_CFG_COMP_MODE_WINDOW); + default: + return -EINVAL; + } } static int ads1015_enable_event_config(struct ads1015_data *data, @@ -813,14 +783,12 @@ static int ads1015_write_event_config(struct iio_dev *indio_dev, int comp_mode = (dir == IIO_EV_DIR_EITHER) ? ADS1015_CFG_COMP_MODE_WINDOW : ADS1015_CFG_COMP_MODE_TRAD; - mutex_lock(&data->lock); + guard(mutex)(&data->lock); /* Prevent from enabling both buffer and event at a time */ ret = iio_device_claim_direct_mode(indio_dev); - if (ret) { - mutex_unlock(&data->lock); + if (ret) return ret; - } if (state) ret = ads1015_enable_event_config(data, chan, comp_mode); @@ -828,8 +796,6 @@ static int ads1015_write_event_config(struct iio_dev *indio_dev, ret = ads1015_disable_event_config(data, chan, comp_mode); iio_device_release_direct_mode(indio_dev); - mutex_unlock(&data->lock); - return ret; } -- cgit v1.2.3 From ee4ef2cbf40ec3297220aff7958f1bb465475ca4 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 9 Mar 2025 16:58:17 +0000 Subject: iio: adc: ti-ads1015: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Cc: Marek Vasut Reviewed-by: David Lechner Link: https://patch.msgid.link/20250309165819.1346684-7-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ti-ads1015.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) diff --git a/drivers/iio/adc/ti-ads1015.c b/drivers/iio/adc/ti-ads1015.c index 71198249f517..705c146c7dc2 100644 --- a/drivers/iio/adc/ti-ads1015.c +++ b/drivers/iio/adc/ti-ads1015.c @@ -569,11 +569,10 @@ static int ads1015_read_raw(struct iio_dev *indio_dev, guard(mutex)(&data->lock); switch (mask) { case IIO_CHAN_INFO_RAW: - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; ret = __ads1015_read_info_raw(data, chan, val); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); if (ret) return ret; @@ -786,16 +785,15 @@ static int ads1015_write_event_config(struct iio_dev *indio_dev, guard(mutex)(&data->lock); /* Prevent from enabling both buffer and event at a time */ - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; if (state) ret = ads1015_enable_event_config(data, chan, comp_mode); else ret = ads1015_disable_event_config(data, chan, comp_mode); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); return ret; } -- cgit v1.2.3 From e6d364b4086226964fe9e67632e1ba5c27406171 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 9 Mar 2025 16:58:18 +0000 Subject: iio: adc: mxs-lradc: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Reviewed-by: David Lechner Link: https://patch.msgid.link/20250309165819.1346684-8-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/adc/mxs-lradc-adc.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) diff --git a/drivers/iio/adc/mxs-lradc-adc.c b/drivers/iio/adc/mxs-lradc-adc.c index 152cbe265e1a..8f1e6acea53b 100644 --- a/drivers/iio/adc/mxs-lradc-adc.c +++ b/drivers/iio/adc/mxs-lradc-adc.c @@ -141,9 +141,8 @@ static int mxs_lradc_adc_read_single(struct iio_dev *iio_dev, int chan, * the same time, yet the code becomes horribly complicated. Therefore I * applied KISS principle here. */ - ret = iio_device_claim_direct_mode(iio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(iio_dev)) + return -EBUSY; reinit_completion(&adc->completion); @@ -192,7 +191,7 @@ err: writel(LRADC_CTRL1_LRADC_IRQ_EN(0), adc->base + LRADC_CTRL1 + STMP_OFFSET_REG_CLR); - iio_device_release_direct_mode(iio_dev); + iio_device_release_direct(iio_dev); return ret; } @@ -275,9 +274,8 @@ static int mxs_lradc_adc_write_raw(struct iio_dev *iio_dev, adc->scale_avail[chan->channel]; int ret; - ret = iio_device_claim_direct_mode(iio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(iio_dev)) + return -EBUSY; switch (m) { case IIO_CHAN_INFO_SCALE: @@ -300,7 +298,7 @@ static int mxs_lradc_adc_write_raw(struct iio_dev *iio_dev, break; } - iio_device_release_direct_mode(iio_dev); + iio_device_release_direct(iio_dev); return ret; } -- cgit v1.2.3 From c86f8e8f9f56dcda51f785c0b0fd318a9af13bfb Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 9 Mar 2025 16:58:19 +0000 Subject: iio: adc: rcar: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Cc: Marek Vasut Reviewed-by: David Lechner Link: https://patch.msgid.link/20250309165819.1346684-9-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/adc/rcar-gyroadc.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/drivers/iio/adc/rcar-gyroadc.c b/drivers/iio/adc/rcar-gyroadc.c index 11170b5852d1..221c075da198 100644 --- a/drivers/iio/adc/rcar-gyroadc.c +++ b/drivers/iio/adc/rcar-gyroadc.c @@ -199,13 +199,12 @@ static int rcar_gyroadc_read_raw(struct iio_dev *indio_dev, if (!consumer) return -EINVAL; - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; ret = rcar_gyroadc_set_power(priv, true); if (ret < 0) { - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); return ret; } @@ -213,7 +212,7 @@ static int rcar_gyroadc_read_raw(struct iio_dev *indio_dev, *val &= BIT(priv->sample_width) - 1; ret = rcar_gyroadc_set_power(priv, false); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); if (ret < 0) return ret; -- cgit v1.2.3 From 354eedf0083f4d7b22743b84e9419a560e862377 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 9 Mar 2025 17:06:16 +0000 Subject: iio: light: apds9306: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Acked-by: Subhajit Ghosh Reviewed-by: David Lechner Link: https://patch.msgid.link/20250309170633.1347476-2-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/light/apds9306.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/iio/light/apds9306.c b/drivers/iio/light/apds9306.c index 5ed7e17f49e7..e9b237de180a 100644 --- a/drivers/iio/light/apds9306.c +++ b/drivers/iio/light/apds9306.c @@ -831,11 +831,10 @@ static int apds9306_read_raw(struct iio_dev *indio_dev, * Changing device parameters during adc operation, resets * the ADC which has to avoided. */ - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; ret = apds9306_read_data(data, val, reg); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); if (ret) return ret; -- cgit v1.2.3 From 403443117b0234b8dfe834a077fbac693e6c9d7e Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 9 Mar 2025 17:06:17 +0000 Subject: iio: light: gp2ap020a00f: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Reviewed-by: David Lechner Link: https://patch.msgid.link/20250309170633.1347476-3-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/light/gp2ap020a00f.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/iio/light/gp2ap020a00f.c b/drivers/iio/light/gp2ap020a00f.c index 1a352c88598e..c7df4b258e2c 100644 --- a/drivers/iio/light/gp2ap020a00f.c +++ b/drivers/iio/light/gp2ap020a00f.c @@ -1283,12 +1283,11 @@ static int gp2ap020a00f_read_raw(struct iio_dev *indio_dev, int err = -EINVAL; if (mask == IIO_CHAN_INFO_RAW) { - err = iio_device_claim_direct_mode(indio_dev); - if (err) - return err; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; err = gp2ap020a00f_read_channel(data, chan, val); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); } return err < 0 ? err : IIO_VAL_INT; } -- cgit v1.2.3 From d793d614dc3f771901d3d10c5079830743dec897 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 9 Mar 2025 17:06:18 +0000 Subject: iio: light: isl29125: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Reviewed-by: David Lechner Link: https://patch.msgid.link/20250309170633.1347476-4-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/light/isl29125.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/iio/light/isl29125.c b/drivers/iio/light/isl29125.c index 326dc39e7929..6bc23b164cc5 100644 --- a/drivers/iio/light/isl29125.c +++ b/drivers/iio/light/isl29125.c @@ -131,11 +131,10 @@ static int isl29125_read_raw(struct iio_dev *indio_dev, switch (mask) { case IIO_CHAN_INFO_RAW: - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; ret = isl29125_read_data(data, chan->scan_index); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); if (ret < 0) return ret; *val = ret; -- cgit v1.2.3 From 8dd92667f0a55ca5b848bae36bbf7ad4a8837ccc Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 9 Mar 2025 17:06:19 +0000 Subject: iio: light: as73211: Use guard() and move mode switch into inner write_raw fucntion By using guard(mutex) and moving code that switches the device to config mode into _as73211_write_raw() the error flow is simplified. Cc: Javier Carrasco Reviewed-by: David Lechner Link: https://patch.msgid.link/20250309170633.1347476-5-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/light/as73211.c | 30 ++++++++++++++---------------- 1 file changed, 14 insertions(+), 16 deletions(-) diff --git a/drivers/iio/light/as73211.c b/drivers/iio/light/as73211.c index 37fffce35dd1..09e484589a63 100644 --- a/drivers/iio/light/as73211.c +++ b/drivers/iio/light/as73211.c @@ -16,6 +16,7 @@ */ #include +#include #include #include #include @@ -517,6 +518,16 @@ static int _as73211_write_raw(struct iio_dev *indio_dev, struct as73211_data *data = iio_priv(indio_dev); int ret; + /* Need to switch to config mode ... */ + if ((data->osr & AS73211_OSR_DOS_MASK) != AS73211_OSR_DOS_CONFIG) { + data->osr &= ~AS73211_OSR_DOS_MASK; + data->osr |= AS73211_OSR_DOS_CONFIG; + + ret = i2c_smbus_write_byte_data(data->client, AS73211_REG_OSR, data->osr); + if (ret < 0) + return ret; + } + switch (mask) { case IIO_CHAN_INFO_SAMP_FREQ: { int reg_bits, freq_kHz = val / HZ_PER_KHZ; /* 1024, 2048, ... */ @@ -601,28 +612,15 @@ static int as73211_write_raw(struct iio_dev *indio_dev, struct iio_chan_spec con struct as73211_data *data = iio_priv(indio_dev); int ret; - mutex_lock(&data->mutex); + guard(mutex)(&data->mutex); ret = iio_device_claim_direct_mode(indio_dev); if (ret < 0) - goto error_unlock; - - /* Need to switch to config mode ... */ - if ((data->osr & AS73211_OSR_DOS_MASK) != AS73211_OSR_DOS_CONFIG) { - data->osr &= ~AS73211_OSR_DOS_MASK; - data->osr |= AS73211_OSR_DOS_CONFIG; - - ret = i2c_smbus_write_byte_data(data->client, AS73211_REG_OSR, data->osr); - if (ret < 0) - goto error_release; - } + return ret; ret = _as73211_write_raw(indio_dev, chan, val, val2, mask); - -error_release: iio_device_release_direct_mode(indio_dev); -error_unlock: - mutex_unlock(&data->mutex); + return ret; } -- cgit v1.2.3 From 6025d20bc3ed7f4748742b30ca131bac0da6b254 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 9 Mar 2025 17:06:20 +0000 Subject: iio: light: as73211: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated Cc: Javier Carrasco Reviewed-by: David Lechner Link: https://patch.msgid.link/20250309170633.1347476-6-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/light/as73211.c | 16 +++++++--------- 1 file changed, 7 insertions(+), 9 deletions(-) diff --git a/drivers/iio/light/as73211.c b/drivers/iio/light/as73211.c index 09e484589a63..68f60dc3c79d 100644 --- a/drivers/iio/light/as73211.c +++ b/drivers/iio/light/as73211.c @@ -419,18 +419,17 @@ static int as73211_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec cons case IIO_CHAN_INFO_RAW: { int ret; - ret = iio_device_claim_direct_mode(indio_dev); - if (ret < 0) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; ret = as73211_req_data(data); if (ret < 0) { - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); return ret; } ret = i2c_smbus_read_word_data(data->client, chan->address); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); if (ret < 0) return ret; @@ -614,12 +613,11 @@ static int as73211_write_raw(struct iio_dev *indio_dev, struct iio_chan_spec con guard(mutex)(&data->mutex); - ret = iio_device_claim_direct_mode(indio_dev); - if (ret < 0) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; ret = _as73211_write_raw(indio_dev, chan, val, val2, mask); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); return ret; } -- cgit v1.2.3 From 05e50a1da59261873e9033d7f96ed9fdbe9e28e0 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 9 Mar 2025 17:06:21 +0000 Subject: iio: light: ltr501: Factor out IIO_INFO_RAW leg of read_raw() callback. Factoring this code out allows for direct returns, simplifying code flow. Reviewed-by: David Lechner Link: https://patch.msgid.link/20250309170633.1347476-7-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/light/ltr501.c | 55 ++++++++++++++++++++++++++-------------------- 1 file changed, 31 insertions(+), 24 deletions(-) diff --git a/drivers/iio/light/ltr501.c b/drivers/iio/light/ltr501.c index 669da0840eba..b42df15b36e1 100644 --- a/drivers/iio/light/ltr501.c +++ b/drivers/iio/light/ltr501.c @@ -646,6 +646,36 @@ static const struct iio_chan_spec ltr301_channels[] = { IIO_CHAN_SOFT_TIMESTAMP(2), }; +static int ltr501_read_info_raw(struct ltr501_data *data, + struct iio_chan_spec const *chan, + int *val) +{ + __le16 buf[2]; + int ret; + + switch (chan->type) { + case IIO_INTENSITY: + mutex_lock(&data->lock_als); + ret = ltr501_read_als(data, buf); + mutex_unlock(&data->lock_als); + if (ret < 0) + return ret; + *val = le16_to_cpu(chan->address == LTR501_ALS_DATA1 ? + buf[0] : buf[1]); + return IIO_VAL_INT; + case IIO_PROXIMITY: + mutex_lock(&data->lock_ps); + ret = ltr501_read_ps(data); + mutex_unlock(&data->lock_ps); + if (ret < 0) + return ret; + *val = ret & LTR501_PS_DATA_MASK; + return IIO_VAL_INT; + default: + return -EINVAL; + } +} + static int ltr501_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long mask) @@ -679,30 +709,7 @@ static int ltr501_read_raw(struct iio_dev *indio_dev, if (ret) return ret; - switch (chan->type) { - case IIO_INTENSITY: - mutex_lock(&data->lock_als); - ret = ltr501_read_als(data, buf); - mutex_unlock(&data->lock_als); - if (ret < 0) - break; - *val = le16_to_cpu(chan->address == LTR501_ALS_DATA1 ? - buf[0] : buf[1]); - ret = IIO_VAL_INT; - break; - case IIO_PROXIMITY: - mutex_lock(&data->lock_ps); - ret = ltr501_read_ps(data); - mutex_unlock(&data->lock_ps); - if (ret < 0) - break; - *val = ret & LTR501_PS_DATA_MASK; - ret = IIO_VAL_INT; - break; - default: - ret = -EINVAL; - break; - } + ret = ltr501_read_info_raw(data, chan, val); iio_device_release_direct_mode(indio_dev); return ret; -- cgit v1.2.3 From 5a7387f208e55ab33f389e3eb1584dd873c40acb Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 9 Mar 2025 17:06:22 +0000 Subject: iio: light: ltr501: Factor out core of write_raw() where direct mode claim is held. Factoring this code out allows for direct returns on error simplifying code flow. Reviewed-by: David Lechner Link: https://patch.msgid.link/20250309170633.1347476-8-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/light/ltr501.c | 94 +++++++++++++++++++++++----------------------- 1 file changed, 46 insertions(+), 48 deletions(-) diff --git a/drivers/iio/light/ltr501.c b/drivers/iio/light/ltr501.c index b42df15b36e1..c44c852a7d76 100644 --- a/drivers/iio/light/ltr501.c +++ b/drivers/iio/light/ltr501.c @@ -763,18 +763,14 @@ static int ltr501_get_gain_index(const struct ltr501_gain *gain, int size, return -1; } -static int ltr501_write_raw(struct iio_dev *indio_dev, - struct iio_chan_spec const *chan, - int val, int val2, long mask) +static int __ltr501_write_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int val, int val2, long mask) { struct ltr501_data *data = iio_priv(indio_dev); int i, ret, freq_val, freq_val2; const struct ltr501_chip_info *info = data->chip_info; - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; - switch (mask) { case IIO_CHAN_INFO_SCALE: switch (chan->type) { @@ -782,53 +778,43 @@ static int ltr501_write_raw(struct iio_dev *indio_dev, i = ltr501_get_gain_index(info->als_gain, info->als_gain_tbl_size, val, val2); - if (i < 0) { - ret = -EINVAL; - break; - } + if (i < 0) + return -EINVAL; data->als_contr &= ~info->als_gain_mask; data->als_contr |= i << info->als_gain_shift; - ret = regmap_write(data->regmap, LTR501_ALS_CONTR, - data->als_contr); - break; + return regmap_write(data->regmap, LTR501_ALS_CONTR, + data->als_contr); case IIO_PROXIMITY: i = ltr501_get_gain_index(info->ps_gain, info->ps_gain_tbl_size, val, val2); - if (i < 0) { - ret = -EINVAL; - break; - } + if (i < 0) + return -EINVAL; + data->ps_contr &= ~LTR501_CONTR_PS_GAIN_MASK; data->ps_contr |= i << LTR501_CONTR_PS_GAIN_SHIFT; - ret = regmap_write(data->regmap, LTR501_PS_CONTR, - data->ps_contr); - break; + return regmap_write(data->regmap, LTR501_PS_CONTR, + data->ps_contr); default: - ret = -EINVAL; - break; + return -EINVAL; } - break; case IIO_CHAN_INFO_INT_TIME: switch (chan->type) { case IIO_INTENSITY: - if (val != 0) { - ret = -EINVAL; - break; - } + if (val != 0) + return -EINVAL; + mutex_lock(&data->lock_als); ret = ltr501_set_it_time(data, val2); mutex_unlock(&data->lock_als); - break; + return ret; default: - ret = -EINVAL; - break; + return -EINVAL; } - break; case IIO_CHAN_INFO_SAMP_FREQ: switch (chan->type) { @@ -836,50 +822,62 @@ static int ltr501_write_raw(struct iio_dev *indio_dev, ret = ltr501_als_read_samp_freq(data, &freq_val, &freq_val2); if (ret < 0) - break; + return ret; ret = ltr501_als_write_samp_freq(data, val, val2); if (ret < 0) - break; + return ret; /* update persistence count when changing frequency */ ret = ltr501_write_intr_prst(data, chan->type, 0, data->als_period); if (ret < 0) - ret = ltr501_als_write_samp_freq(data, freq_val, - freq_val2); - break; + /* Do not ovewrite error */ + ltr501_als_write_samp_freq(data, freq_val, + freq_val2); + return ret; case IIO_PROXIMITY: ret = ltr501_ps_read_samp_freq(data, &freq_val, &freq_val2); if (ret < 0) - break; + return ret; ret = ltr501_ps_write_samp_freq(data, val, val2); if (ret < 0) - break; + return ret; /* update persistence count when changing frequency */ ret = ltr501_write_intr_prst(data, chan->type, 0, data->ps_period); if (ret < 0) - ret = ltr501_ps_write_samp_freq(data, freq_val, - freq_val2); - break; + /* Do not overwrite error */ + ltr501_ps_write_samp_freq(data, freq_val, + freq_val2); + return ret; default: - ret = -EINVAL; - break; + return -EINVAL; } - break; - default: - ret = -EINVAL; - break; + return -EINVAL; } +} + +static int ltr501_write_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int val, int val2, long mask) +{ + int ret; + + ret = iio_device_claim_direct_mode(indio_dev); + if (ret) + return ret; + + ret = __ltr501_write_raw(indio_dev, chan, val, val2, mask); iio_device_release_direct_mode(indio_dev); + return ret; } -- cgit v1.2.3 From 2983ad971d02489a753df6ea44027c231baad555 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 9 Mar 2025 17:06:23 +0000 Subject: iio: light: ltr501: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Reviewed-by: David Lechner Link: https://patch.msgid.link/20250309170633.1347476-9-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/light/ltr501.c | 21 +++++++++------------ 1 file changed, 9 insertions(+), 12 deletions(-) diff --git a/drivers/iio/light/ltr501.c b/drivers/iio/light/ltr501.c index c44c852a7d76..23fd0713c64b 100644 --- a/drivers/iio/light/ltr501.c +++ b/drivers/iio/light/ltr501.c @@ -688,14 +688,13 @@ static int ltr501_read_raw(struct iio_dev *indio_dev, case IIO_CHAN_INFO_PROCESSED: switch (chan->type) { case IIO_LIGHT: - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; mutex_lock(&data->lock_als); ret = ltr501_read_als(data, buf); mutex_unlock(&data->lock_als); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); if (ret < 0) return ret; *val = ltr501_calculate_lux(le16_to_cpu(buf[1]), @@ -705,13 +704,12 @@ static int ltr501_read_raw(struct iio_dev *indio_dev, return -EINVAL; } case IIO_CHAN_INFO_RAW: - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; ret = ltr501_read_info_raw(data, chan, val); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); return ret; case IIO_CHAN_INFO_SCALE: @@ -870,13 +868,12 @@ static int ltr501_write_raw(struct iio_dev *indio_dev, { int ret; - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; ret = __ltr501_write_raw(indio_dev, chan, val, val2, mask); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); return ret; } -- cgit v1.2.3 From 7e8c0ec196e789ea5a47e86bba0be4ce8345f447 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 9 Mar 2025 17:06:24 +0000 Subject: iio: light: opt4060: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. This is a case where the code is pinning down the mode so also has a claim on buffered mode. A follow up set may move those calls over to a sparse friendly form as well. Tested-by: Per-Daniel Olsson Reviewed-by: Per-Daniel Olsson Reviewed-by: David Lechner Link: https://patch.msgid.link/20250309170633.1347476-10-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/light/opt4060.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/iio/light/opt4060.c b/drivers/iio/light/opt4060.c index ab55f8d2ea0c..f4085020e03e 100644 --- a/drivers/iio/light/opt4060.c +++ b/drivers/iio/light/opt4060.c @@ -311,7 +311,7 @@ any_mode_retry: * concurrently change. And we just keep trying until we get one * of the modes... */ - if (iio_device_claim_direct_mode(indio_dev)) + if (!iio_device_claim_direct(indio_dev)) goto any_mode_retry; /* * This path means that we managed to claim direct mode. In @@ -320,7 +320,8 @@ any_mode_retry: */ ret = opt4060_set_state_common(chip, continuous_sampling, continuous_irq); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); + return ret; } else { /* * This path means that we managed to claim buffer mode. In -- cgit v1.2.3 From e08acc4c82a3305c1c9c57d2f148d4d21ae949ce Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 9 Mar 2025 17:06:25 +0000 Subject: iio: light: rohm-bu27034: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Acked-by: Matti Vaittinen Reviewed-by: David Lechner Link: https://patch.msgid.link/20250309170633.1347476-11-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/light/rohm-bu27034.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) diff --git a/drivers/iio/light/rohm-bu27034.c b/drivers/iio/light/rohm-bu27034.c index cc25596cb248..7cec5e943373 100644 --- a/drivers/iio/light/rohm-bu27034.c +++ b/drivers/iio/light/rohm-bu27034.c @@ -998,9 +998,8 @@ static int bu27034_read_raw(struct iio_dev *idev, return -EINVAL; /* Don't mess with measurement enabling while buffering */ - ret = iio_device_claim_direct_mode(idev); - if (ret) - return ret; + if (!iio_device_claim_direct(idev)) + return -EBUSY; mutex_lock(&data->mutex); /* @@ -1011,7 +1010,7 @@ static int bu27034_read_raw(struct iio_dev *idev, ret = result_get(data, chan->channel, val); mutex_unlock(&data->mutex); - iio_device_release_direct_mode(idev); + iio_device_release_direct(idev); if (ret) return ret; @@ -1050,9 +1049,8 @@ static int bu27034_write_raw(struct iio_dev *idev, struct bu27034_data *data = iio_priv(idev); int ret; - ret = iio_device_claim_direct_mode(idev); - if (ret) - return ret; + if (!iio_device_claim_direct(idev)) + return -EBUSY; switch (mask) { case IIO_CHAN_INFO_SCALE: @@ -1069,7 +1067,7 @@ static int bu27034_write_raw(struct iio_dev *idev, break; } - iio_device_release_direct_mode(idev); + iio_device_release_direct(idev); return ret; } -- cgit v1.2.3 From 9c97c7d2a9019da73c87839ccb4baa3d75095fc0 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 9 Mar 2025 17:06:26 +0000 Subject: iio: light: rpr0521: Factor out handling of IIO_INFO_RAW and use guard() Factor out the code which is only called with the direct mode claimed. This and the use of guard(mutex) allows direct returns simplifying code flow. Reviewed-by: David Lechner Link: https://patch.msgid.link/20250309170633.1347476-12-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/light/rpr0521.c | 57 +++++++++++++++++++++++++++------------------ 1 file changed, 34 insertions(+), 23 deletions(-) diff --git a/drivers/iio/light/rpr0521.c b/drivers/iio/light/rpr0521.c index 2ba917c5c138..65c60a1d2f0b 100644 --- a/drivers/iio/light/rpr0521.c +++ b/drivers/iio/light/rpr0521.c @@ -11,6 +11,7 @@ #include #include +#include #include #include #include @@ -704,6 +705,38 @@ static int rpr0521_write_ps_offset(struct rpr0521_data *data, int offset) return ret; } +static int rpr0521_read_info_raw(struct rpr0521_data *data, + struct iio_chan_spec const *chan, + int *val) +{ + u8 device_mask; + __le16 raw_data; + int ret; + + device_mask = rpr0521_data_reg[chan->address].device_mask; + + guard(mutex)(&data->lock); + ret = rpr0521_set_power_state(data, true, device_mask); + if (ret < 0) + return ret; + + ret = regmap_bulk_read(data->regmap, + rpr0521_data_reg[chan->address].address, + &raw_data, sizeof(raw_data)); + if (ret < 0) { + rpr0521_set_power_state(data, false, device_mask); + return ret; + } + + ret = rpr0521_set_power_state(data, false, device_mask); + if (ret < 0) + return ret; + + *val = le16_to_cpu(raw_data); + + return 0; +} + static int rpr0521_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long mask) @@ -711,8 +744,6 @@ static int rpr0521_read_raw(struct iio_dev *indio_dev, struct rpr0521_data *data = iio_priv(indio_dev); int ret; int busy; - u8 device_mask; - __le16 raw_data; switch (mask) { case IIO_CHAN_INFO_RAW: @@ -723,31 +754,11 @@ static int rpr0521_read_raw(struct iio_dev *indio_dev, if (busy) return -EBUSY; - device_mask = rpr0521_data_reg[chan->address].device_mask; - - mutex_lock(&data->lock); - ret = rpr0521_set_power_state(data, true, device_mask); - if (ret < 0) - goto rpr0521_read_raw_out; - - ret = regmap_bulk_read(data->regmap, - rpr0521_data_reg[chan->address].address, - &raw_data, sizeof(raw_data)); - if (ret < 0) { - rpr0521_set_power_state(data, false, device_mask); - goto rpr0521_read_raw_out; - } - - ret = rpr0521_set_power_state(data, false, device_mask); - -rpr0521_read_raw_out: - mutex_unlock(&data->lock); + ret = rpr0521_read_info_raw(data, chan, val); iio_device_release_direct_mode(indio_dev); if (ret < 0) return ret; - *val = le16_to_cpu(raw_data); - return IIO_VAL_INT; case IIO_CHAN_INFO_SCALE: -- cgit v1.2.3 From e0dc0feb991b07df6b4b80d5fd417a3967b8ebb7 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 9 Mar 2025 17:06:27 +0000 Subject: iio: light: rpr0521: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Reviewed-by: David Lechner Link: https://patch.msgid.link/20250309170633.1347476-13-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/light/rpr0521.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/iio/light/rpr0521.c b/drivers/iio/light/rpr0521.c index 65c60a1d2f0b..92e7552f3e39 100644 --- a/drivers/iio/light/rpr0521.c +++ b/drivers/iio/light/rpr0521.c @@ -743,19 +743,17 @@ static int rpr0521_read_raw(struct iio_dev *indio_dev, { struct rpr0521_data *data = iio_priv(indio_dev); int ret; - int busy; switch (mask) { case IIO_CHAN_INFO_RAW: if (chan->type != IIO_INTENSITY && chan->type != IIO_PROXIMITY) return -EINVAL; - busy = iio_device_claim_direct_mode(indio_dev); - if (busy) + if (!iio_device_claim_direct(indio_dev)) return -EBUSY; ret = rpr0521_read_info_raw(data, chan, val); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); if (ret < 0) return ret; -- cgit v1.2.3 From 43622f88b06d04fee68e131ed81f69873c8a3e98 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 9 Mar 2025 17:06:28 +0000 Subject: iio: light: si1145: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Reviewed-by: David Lechner Link: https://patch.msgid.link/20250309170633.1347476-14-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/light/si1145.c | 25 +++++++++++-------------- 1 file changed, 11 insertions(+), 14 deletions(-) diff --git a/drivers/iio/light/si1145.c b/drivers/iio/light/si1145.c index 66abda021696..4aa02afd853e 100644 --- a/drivers/iio/light/si1145.c +++ b/drivers/iio/light/si1145.c @@ -633,11 +633,10 @@ static int si1145_read_raw(struct iio_dev *indio_dev, case IIO_VOLTAGE: case IIO_TEMP: case IIO_UVINDEX: - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; ret = si1145_measure(indio_dev, chan); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); if (ret < 0) return ret; @@ -750,18 +749,17 @@ static int si1145_write_raw(struct iio_dev *indio_dev, return -EINVAL; } - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; ret = si1145_param_set(data, reg1, val); if (ret < 0) { - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); return ret; } /* Set recovery period to one's complement of gain */ ret = si1145_param_set(data, reg2, (~val & 0x07) << 4); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); return ret; case IIO_CHAN_INFO_RAW: if (chan->type != IIO_CURRENT) @@ -773,19 +771,18 @@ static int si1145_write_raw(struct iio_dev *indio_dev, reg1 = SI1145_PS_LED_REG(chan->channel); shift = SI1145_PS_LED_SHIFT(chan->channel); - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; ret = i2c_smbus_read_byte_data(data->client, reg1); if (ret < 0) { - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); return ret; } ret = i2c_smbus_write_byte_data(data->client, reg1, (ret & ~(0x0f << shift)) | ((val & 0x0f) << shift)); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); return ret; case IIO_CHAN_INFO_SAMP_FREQ: return si1145_store_samp_freq(data, val); -- cgit v1.2.3 From 565e9c17e4dc4ce870c9d2b8c988a50744fff9e6 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 9 Mar 2025 17:06:29 +0000 Subject: iio: light: st_uvis25: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Reviewed-by: David Lechner Link: https://patch.msgid.link/20250309170633.1347476-15-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/light/st_uvis25_core.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/iio/light/st_uvis25_core.c b/drivers/iio/light/st_uvis25_core.c index 40a810000df0..124a8f9204a9 100644 --- a/drivers/iio/light/st_uvis25_core.c +++ b/drivers/iio/light/st_uvis25_core.c @@ -117,9 +117,8 @@ static int st_uvis25_read_raw(struct iio_dev *iio_dev, { int ret; - ret = iio_device_claim_direct_mode(iio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(iio_dev)) + return -EBUSY; switch (mask) { case IIO_CHAN_INFO_PROCESSED: { @@ -144,7 +143,7 @@ static int st_uvis25_read_raw(struct iio_dev *iio_dev, break; } - iio_device_release_direct_mode(iio_dev); + iio_device_release_direct(iio_dev); return ret; } -- cgit v1.2.3 From 65a6ce5aeb82f1446fef4bd915319f5414ddecfa Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 9 Mar 2025 17:06:30 +0000 Subject: iio: light: tcs3414: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Reviewed-by: David Lechner Link: https://patch.msgid.link/20250309170633.1347476-16-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/light/tcs3414.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/drivers/iio/light/tcs3414.c b/drivers/iio/light/tcs3414.c index 884e43e4cda4..39268f855c77 100644 --- a/drivers/iio/light/tcs3414.c +++ b/drivers/iio/light/tcs3414.c @@ -134,16 +134,15 @@ static int tcs3414_read_raw(struct iio_dev *indio_dev, switch (mask) { case IIO_CHAN_INFO_RAW: - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; ret = tcs3414_req_data(data); if (ret < 0) { - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); return ret; } ret = i2c_smbus_read_word_data(data->client, chan->address); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); if (ret < 0) return ret; *val = ret; -- cgit v1.2.3 From abce31c33db6c2c8632214e126fde2e6423279cf Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 9 Mar 2025 17:06:31 +0000 Subject: iio: light: tcs3472: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Reviewed-by: David Lechner Link: https://patch.msgid.link/20250309170633.1347476-17-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/light/tcs3472.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/drivers/iio/light/tcs3472.c b/drivers/iio/light/tcs3472.c index 2bd36a344ea5..0f8bf8503edd 100644 --- a/drivers/iio/light/tcs3472.c +++ b/drivers/iio/light/tcs3472.c @@ -148,16 +148,15 @@ static int tcs3472_read_raw(struct iio_dev *indio_dev, switch (mask) { case IIO_CHAN_INFO_RAW: - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; ret = tcs3472_req_data(data); if (ret < 0) { - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); return ret; } ret = i2c_smbus_read_word_data(data->client, chan->address); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); if (ret < 0) return ret; *val = ret; -- cgit v1.2.3 From 8d7c205ff9ff8fedd86d704c21f80471f0de7547 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 9 Mar 2025 17:06:32 +0000 Subject: iio: light: vcnl4000: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. To simplify the code whilst making the change (and avoid potential false positives from sparse), split the enabling and disabling of thresholds into separate functions. This could have been done in two steps by splitting the functions first, but would have meant rewriting the enable function twice. Cc: Astrid Rost Tested-by: Per-Daniel Olsson Reviewed-by: Per-Daniel Olsson Reviewed-by: David Lechner Link: https://patch.msgid.link/20250309170633.1347476-18-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/light/vcnl4000.c | 78 +++++++++++++++++++++++--------------------- 1 file changed, 41 insertions(+), 37 deletions(-) diff --git a/drivers/iio/light/vcnl4000.c b/drivers/iio/light/vcnl4000.c index e19199b17f2e..d7489bee2dff 100644 --- a/drivers/iio/light/vcnl4000.c +++ b/drivers/iio/light/vcnl4000.c @@ -1084,9 +1084,8 @@ static int vcnl4010_read_raw(struct iio_dev *indio_dev, switch (mask) { case IIO_CHAN_INFO_RAW: case IIO_CHAN_INFO_SCALE: - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; /* Protect against event capture. */ if (vcnl4010_is_in_periodic_mode(data)) { @@ -1096,7 +1095,7 @@ static int vcnl4010_read_raw(struct iio_dev *indio_dev, mask); } - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); return ret; case IIO_CHAN_INFO_SAMP_FREQ: switch (chan->type) { @@ -1157,9 +1156,8 @@ static int vcnl4010_write_raw(struct iio_dev *indio_dev, int ret; struct vcnl4000_data *data = iio_priv(indio_dev); - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; /* Protect against event capture. */ if (vcnl4010_is_in_periodic_mode(data)) { @@ -1183,7 +1181,7 @@ static int vcnl4010_write_raw(struct iio_dev *indio_dev, } end: - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); return ret; } @@ -1410,46 +1408,52 @@ static int vcnl4010_read_event_config(struct iio_dev *indio_dev, } } -static int vcnl4010_config_threshold(struct iio_dev *indio_dev, bool state) +static int vcnl4010_config_threshold_enable(struct vcnl4000_data *data) { - struct vcnl4000_data *data = iio_priv(indio_dev); int ret; - int icr; - int command; - if (state) { - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + /* Enable periodic measurement of proximity data. */ + ret = i2c_smbus_write_byte_data(data->client, VCNL4000_COMMAND, + VCNL4000_SELF_TIMED_EN | VCNL4000_PROX_EN); + if (ret < 0) + return ret; - /* Enable periodic measurement of proximity data. */ - command = VCNL4000_SELF_TIMED_EN | VCNL4000_PROX_EN; + /* + * Enable interrupts on threshold, for proximity data by + * default. + */ + return i2c_smbus_write_byte_data(data->client, VCNL4010_INT_CTRL, + VCNL4010_INT_THR_EN); +} - /* - * Enable interrupts on threshold, for proximity data by - * default. - */ - icr = VCNL4010_INT_THR_EN; - } else { - if (!vcnl4010_is_thr_enabled(data)) - return 0; +static int vcnl4010_config_threshold_disable(struct vcnl4000_data *data) +{ + int ret; - command = 0; - icr = 0; - } + if (!vcnl4010_is_thr_enabled(data)) + return 0; - ret = i2c_smbus_write_byte_data(data->client, VCNL4000_COMMAND, - command); + ret = i2c_smbus_write_byte_data(data->client, VCNL4000_COMMAND, 0); if (ret < 0) - goto end; + return ret; - ret = i2c_smbus_write_byte_data(data->client, VCNL4010_INT_CTRL, icr); + return i2c_smbus_write_byte_data(data->client, VCNL4010_INT_CTRL, 0); +} -end: - if (state) - iio_device_release_direct_mode(indio_dev); +static int vcnl4010_config_threshold(struct iio_dev *indio_dev, bool state) +{ + struct vcnl4000_data *data = iio_priv(indio_dev); + int ret; - return ret; + if (state) { + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; + ret = vcnl4010_config_threshold_enable(data); + iio_device_release_direct(indio_dev); + return ret; + } else { + return vcnl4010_config_threshold_disable(data); + } } static int vcnl4010_write_event_config(struct iio_dev *indio_dev, -- cgit v1.2.3 From cac2bc675bcfa1441283fd0f438a709dba419840 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 9 Mar 2025 17:06:33 +0000 Subject: iio: light: vcnl4035: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. This case triggered a false positive from sparse, resolved by factoring out the code that includes the claim and release of direct mode. Reviewed-by: David Lechner Link: https://patch.msgid.link/20250309170633.1347476-19-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/light/vcnl4035.c | 42 ++++++++++++++++++++++++++---------------- 1 file changed, 26 insertions(+), 16 deletions(-) diff --git a/drivers/iio/light/vcnl4035.c b/drivers/iio/light/vcnl4035.c index 67c94be02018..b2bede9d3daa 100644 --- a/drivers/iio/light/vcnl4035.c +++ b/drivers/iio/light/vcnl4035.c @@ -156,6 +156,31 @@ static int vcnl4035_set_pm_runtime_state(struct vcnl4035_data *data, bool on) return ret; } +static int vcnl4035_read_info_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, int *val) +{ + struct vcnl4035_data *data = iio_priv(indio_dev); + int ret; + int raw_data; + unsigned int reg; + + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; + + if (chan->channel) + reg = VCNL4035_ALS_DATA; + else + reg = VCNL4035_WHITE_DATA; + ret = regmap_read(data->regmap, reg, &raw_data); + iio_device_release_direct(indio_dev); + if (ret) + return ret; + + *val = raw_data; + + return IIO_VAL_INT; +} + /* * Device IT INT Time (ms) Scale (lux/step) * 000 50 0.064 @@ -175,28 +200,13 @@ static int vcnl4035_read_raw(struct iio_dev *indio_dev, { struct vcnl4035_data *data = iio_priv(indio_dev); int ret; - int raw_data; - unsigned int reg; switch (mask) { case IIO_CHAN_INFO_RAW: ret = vcnl4035_set_pm_runtime_state(data, true); if (ret < 0) return ret; - - ret = iio_device_claim_direct_mode(indio_dev); - if (!ret) { - if (chan->channel) - reg = VCNL4035_ALS_DATA; - else - reg = VCNL4035_WHITE_DATA; - ret = regmap_read(data->regmap, reg, &raw_data); - iio_device_release_direct_mode(indio_dev); - if (!ret) { - *val = raw_data; - ret = IIO_VAL_INT; - } - } + ret = vcnl4035_read_info_raw(indio_dev, chan, val); vcnl4035_set_pm_runtime_state(data, false); return ret; case IIO_CHAN_INFO_INT_TIME: -- cgit v1.2.3 From 42b1a2663f4b7630f3a2793969f9c8f2ff451db4 Mon Sep 17 00:00:00 2001 From: David Heidelberg Date: Wed, 2 Apr 2025 21:33:24 +0200 Subject: iio: light: al3010: Improve al3010_init error handling with dev_err_probe() Minor code simplifications and improved error reporting. Signed-off-by: David Heidelberg Link: https://patch.msgid.link/20250402-al3010-iio-regmap-v4-1-d189bea87261@ixit.cz Signed-off-by: Jonathan Cameron --- drivers/iio/light/al3010.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/drivers/iio/light/al3010.c b/drivers/iio/light/al3010.c index 8c004a9239ae..a4116763c229 100644 --- a/drivers/iio/light/al3010.c +++ b/drivers/iio/light/al3010.c @@ -92,7 +92,7 @@ static int al3010_init(struct al3010_data *data) ret = devm_add_action_or_reset(&data->client->dev, al3010_set_pwr_off, data); - if (ret < 0) + if (ret) return ret; ret = i2c_smbus_write_byte_data(data->client, AL3010_REG_CONFIG, @@ -190,10 +190,8 @@ static int al3010_probe(struct i2c_client *client) indio_dev->modes = INDIO_DIRECT_MODE; ret = al3010_init(data); - if (ret < 0) { - dev_err(dev, "al3010 chip init failed\n"); - return ret; - } + if (ret) + return dev_err_probe(dev, ret, "failed to init ALS\n"); return devm_iio_device_register(dev, indio_dev); } -- cgit v1.2.3 From c0461f8e842495041c18b2c67647501d55c17441 Mon Sep 17 00:00:00 2001 From: David Heidelberg Date: Wed, 2 Apr 2025 21:33:25 +0200 Subject: iio: light: al3000a: Fix an error handling path in al3000a_probe() If regmap_write() fails in al3000a_init(), al3000a_set_pwr_off is not called. In order to avoid such a situation, move the devm_add_action_or_reset() which calls al3000a_set_pwr_off right after a successful al3000a_set_pwr_on. Signed-off-by: David Heidelberg Link: https://patch.msgid.link/20250402-al3010-iio-regmap-v4-2-d189bea87261@ixit.cz Signed-off-by: Jonathan Cameron --- drivers/iio/light/al3000a.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/iio/light/al3000a.c b/drivers/iio/light/al3000a.c index e2fbb1270040..6d5115b2a06c 100644 --- a/drivers/iio/light/al3000a.c +++ b/drivers/iio/light/al3000a.c @@ -85,12 +85,17 @@ static void al3000a_set_pwr_off(void *_data) static int al3000a_init(struct al3000a_data *data) { + struct device *dev = regmap_get_device(data->regmap); int ret; ret = al3000a_set_pwr_on(data); if (ret) return ret; + ret = devm_add_action_or_reset(dev, al3000a_set_pwr_off, data); + if (ret) + return dev_err_probe(dev, ret, "failed to add action\n"); + ret = regmap_write(data->regmap, AL3000A_REG_SYSTEM, AL3000A_CONFIG_RESET); if (ret) return ret; @@ -157,10 +162,6 @@ static int al3000a_probe(struct i2c_client *client) if (ret) return dev_err_probe(dev, ret, "failed to init ALS\n"); - ret = devm_add_action_or_reset(dev, al3000a_set_pwr_off, data); - if (ret) - return dev_err_probe(dev, ret, "failed to add action\n"); - return devm_iio_device_register(dev, indio_dev); } -- cgit v1.2.3 From b8154f3477c46453c8be3257d194cf5fdf5b5a23 Mon Sep 17 00:00:00 2001 From: David Heidelberg Date: Wed, 2 Apr 2025 21:33:26 +0200 Subject: iio: light: al3320a: Fix an error handling path in al3320a_probe() If regmap_write() fails in al3320a_init(), al3320a_set_pwr_off is not called. In order to avoid such a situation, move the devm_add_action_or_reset() which calls al3320a_set_pwr_off right after a successful al3320a_set_pwr_on. Signed-off-by: David Heidelberg Link: https://patch.msgid.link/20250402-al3010-iio-regmap-v4-3-d189bea87261@ixit.cz Signed-off-by: Jonathan Cameron --- drivers/iio/light/al3320a.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/iio/light/al3320a.c b/drivers/iio/light/al3320a.c index 1b2b0359ed5d..86ed23461cee 100644 --- a/drivers/iio/light/al3320a.c +++ b/drivers/iio/light/al3320a.c @@ -101,6 +101,12 @@ static int al3320a_init(struct al3320a_data *data) if (ret < 0) return ret; + ret = devm_add_action_or_reset(&data->client->dev, + al3320a_set_pwr_off, + data); + if (ret) + return ret; + ret = i2c_smbus_write_byte_data(data->client, AL3320A_REG_CONFIG_RANGE, FIELD_PREP(AL3320A_GAIN_MASK, AL3320A_RANGE_3)); @@ -211,10 +217,6 @@ static int al3320a_probe(struct i2c_client *client) return ret; } - ret = devm_add_action_or_reset(dev, al3320a_set_pwr_off, data); - if (ret < 0) - return ret; - return devm_iio_device_register(dev, indio_dev); } -- cgit v1.2.3 From 0e5e21e23dd6ca4aaf96c99726230110b1a0b448 Mon Sep 17 00:00:00 2001 From: David Heidelberg Date: Wed, 2 Apr 2025 21:33:27 +0200 Subject: iio: light: al3010: Implement regmap support Modernize and clean up the driver using the regmap framework. With the regmap implementation, the compiler produces a significantly smaller module. Size before: 72 kB Size after: 58 kB Signed-off-by: David Heidelberg Link: https://patch.msgid.link/20250402-al3010-iio-regmap-v4-4-d189bea87261@ixit.cz Signed-off-by: Jonathan Cameron --- drivers/iio/light/al3010.c | 76 +++++++++++++++++++++++++--------------------- 1 file changed, 41 insertions(+), 35 deletions(-) diff --git a/drivers/iio/light/al3010.c b/drivers/iio/light/al3010.c index a4116763c229..8e703c81f954 100644 --- a/drivers/iio/light/al3010.c +++ b/drivers/iio/light/al3010.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include @@ -44,8 +45,14 @@ static const int al3010_scales[][2] = { {0, 1187200}, {0, 296800}, {0, 74200}, {0, 18600} }; +static const struct regmap_config al3010_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = AL3010_REG_CONFIG, +}; + struct al3010_data { - struct i2c_client *client; + struct regmap *regmap; }; static const struct iio_chan_spec al3010_channels[] = { @@ -67,41 +74,36 @@ static const struct attribute_group al3010_attribute_group = { .attrs = al3010_attributes, }; -static int al3010_set_pwr_on(struct i2c_client *client) +static int al3010_set_pwr_on(struct al3010_data *data) { - return i2c_smbus_write_byte_data(client, AL3010_REG_SYSTEM, - AL3010_CONFIG_ENABLE); + return regmap_write(data->regmap, AL3010_REG_SYSTEM, AL3010_CONFIG_ENABLE); } static void al3010_set_pwr_off(void *_data) { struct al3010_data *data = _data; + struct device *dev = regmap_get_device(data->regmap); + int ret; - i2c_smbus_write_byte_data(data->client, AL3010_REG_SYSTEM, - AL3010_CONFIG_DISABLE); + ret = regmap_write(data->regmap, AL3010_REG_SYSTEM, AL3010_CONFIG_DISABLE); + if (ret) + dev_err(dev, "failed to write system register\n"); } static int al3010_init(struct al3010_data *data) { + struct device *dev = regmap_get_device(data->regmap); int ret; - ret = al3010_set_pwr_on(data->client); - if (ret < 0) - return ret; - - ret = devm_add_action_or_reset(&data->client->dev, - al3010_set_pwr_off, - data); + ret = al3010_set_pwr_on(data); if (ret) return ret; - ret = i2c_smbus_write_byte_data(data->client, AL3010_REG_CONFIG, - FIELD_PREP(AL3010_GAIN_MASK, - AL3XXX_RANGE_3)); - if (ret < 0) + ret = devm_add_action_or_reset(dev, al3010_set_pwr_off, data); + if (ret) return ret; - - return 0; + return regmap_write(data->regmap, AL3010_REG_CONFIG, + FIELD_PREP(AL3010_GAIN_MASK, AL3XXX_RANGE_3)); } static int al3010_read_raw(struct iio_dev *indio_dev, @@ -109,7 +111,7 @@ static int al3010_read_raw(struct iio_dev *indio_dev, int *val2, long mask) { struct al3010_data *data = iio_priv(indio_dev); - int ret; + int ret, gain, raw; switch (mask) { case IIO_CHAN_INFO_RAW: @@ -118,21 +120,21 @@ static int al3010_read_raw(struct iio_dev *indio_dev, * - low byte of output is stored at AL3010_REG_DATA_LOW * - high byte of output is stored at AL3010_REG_DATA_LOW + 1 */ - ret = i2c_smbus_read_word_data(data->client, - AL3010_REG_DATA_LOW); - if (ret < 0) + ret = regmap_read(data->regmap, AL3010_REG_DATA_LOW, &raw); + if (ret) return ret; - *val = ret; + + *val = raw; + return IIO_VAL_INT; case IIO_CHAN_INFO_SCALE: - ret = i2c_smbus_read_byte_data(data->client, - AL3010_REG_CONFIG); - if (ret < 0) + ret = regmap_read(data->regmap, AL3010_REG_CONFIG, &gain); + if (ret) return ret; - ret = FIELD_GET(AL3010_GAIN_MASK, ret); - *val = al3010_scales[ret][0]; - *val2 = al3010_scales[ret][1]; + gain = FIELD_GET(AL3010_GAIN_MASK, gain); + *val = al3010_scales[gain][0]; + *val2 = al3010_scales[gain][1]; return IIO_VAL_INT_PLUS_MICRO; } @@ -153,9 +155,8 @@ static int al3010_write_raw(struct iio_dev *indio_dev, val2 != al3010_scales[i][1]) continue; - return i2c_smbus_write_byte_data(data->client, - AL3010_REG_CONFIG, - FIELD_PREP(AL3010_GAIN_MASK, i)); + return regmap_write(data->regmap, AL3010_REG_CONFIG, + FIELD_PREP(AL3010_GAIN_MASK, i)); } break; } @@ -181,7 +182,10 @@ static int al3010_probe(struct i2c_client *client) data = iio_priv(indio_dev); i2c_set_clientdata(client, indio_dev); - data->client = client; + data->regmap = devm_regmap_init_i2c(client, &al3010_regmap_config); + if (IS_ERR(data->regmap)) + return dev_err_probe(dev, PTR_ERR(data->regmap), + "cannot allocate regmap\n"); indio_dev->info = &al3010_info; indio_dev->name = "al3010"; @@ -206,7 +210,9 @@ static int al3010_suspend(struct device *dev) static int al3010_resume(struct device *dev) { - return al3010_set_pwr_on(to_i2c_client(dev)); + struct al3010_data *data = iio_priv(dev_get_drvdata(dev)); + + return al3010_set_pwr_on(data); } static DEFINE_SIMPLE_DEV_PM_OPS(al3010_pm_ops, al3010_suspend, al3010_resume); -- cgit v1.2.3 From 1850e6ae7f91135d9224f58d5944ba2fd29261fc Mon Sep 17 00:00:00 2001 From: David Heidelberg Date: Wed, 2 Apr 2025 21:33:28 +0200 Subject: iio: light: al3320a: Implement regmap support Modernize and clean up the driver using the regmap framework. With the regmap implementation, the compiler produces a significantly smaller module. Size before: 72 kB Size after: 58 kB Signed-off-by: David Heidelberg Link: https://patch.msgid.link/20250402-al3010-iio-regmap-v4-5-d189bea87261@ixit.cz Signed-off-by: Jonathan Cameron --- drivers/iio/light/al3320a.c | 87 +++++++++++++++++++++++++-------------------- 1 file changed, 48 insertions(+), 39 deletions(-) diff --git a/drivers/iio/light/al3320a.c b/drivers/iio/light/al3320a.c index 86ed23461cee..31f5e033c386 100644 --- a/drivers/iio/light/al3320a.c +++ b/drivers/iio/light/al3320a.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include @@ -57,8 +58,14 @@ static const int al3320a_scales[][2] = { {0, 512000}, {0, 128000}, {0, 32000}, {0, 10000} }; +static const struct regmap_config al3320a_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = AL3320A_REG_HIGH_THRESH_HIGH, +}; + struct al3320a_data { - struct i2c_client *client; + struct regmap *regmap; }; static const struct iio_chan_spec al3320a_channels[] = { @@ -80,50 +87,47 @@ static const struct attribute_group al3320a_attribute_group = { .attrs = al3320a_attributes, }; -static int al3320a_set_pwr_on(struct i2c_client *client) +static int al3320a_set_pwr_on(struct al3320a_data *data) { - return i2c_smbus_write_byte_data(client, AL3320A_REG_CONFIG, AL3320A_CONFIG_ENABLE); + return regmap_write(data->regmap, AL3320A_REG_CONFIG, AL3320A_CONFIG_ENABLE); } static void al3320a_set_pwr_off(void *_data) { struct al3320a_data *data = _data; + struct device *dev = regmap_get_device(data->regmap); + int ret; - i2c_smbus_write_byte_data(data->client, AL3320A_REG_CONFIG, AL3320A_CONFIG_DISABLE); + ret = regmap_write(data->regmap, AL3320A_REG_CONFIG, AL3320A_CONFIG_DISABLE); + if (ret) + dev_err(dev, "failed to write system register\n"); } static int al3320a_init(struct al3320a_data *data) { + struct device *dev = regmap_get_device(data->regmap); int ret; - ret = al3320a_set_pwr_on(data->client); - - if (ret < 0) - return ret; - - ret = devm_add_action_or_reset(&data->client->dev, - al3320a_set_pwr_off, - data); + ret = al3320a_set_pwr_on(data); if (ret) return ret; - ret = i2c_smbus_write_byte_data(data->client, AL3320A_REG_CONFIG_RANGE, - FIELD_PREP(AL3320A_GAIN_MASK, - AL3320A_RANGE_3)); - if (ret < 0) + ret = devm_add_action_or_reset(dev, al3320a_set_pwr_off, data); + if (ret) return ret; - ret = i2c_smbus_write_byte_data(data->client, AL3320A_REG_MEAN_TIME, - AL3320A_DEFAULT_MEAN_TIME); - if (ret < 0) + ret = regmap_write(data->regmap, AL3320A_REG_CONFIG_RANGE, + FIELD_PREP(AL3320A_GAIN_MASK, AL3320A_RANGE_3)); + if (ret) return ret; - ret = i2c_smbus_write_byte_data(data->client, AL3320A_REG_WAIT, - AL3320A_DEFAULT_WAIT_TIME); - if (ret < 0) + ret = regmap_write(data->regmap, AL3320A_REG_MEAN_TIME, + AL3320A_DEFAULT_MEAN_TIME); + if (ret) return ret; - return 0; + return regmap_write(data->regmap, AL3320A_REG_WAIT, + AL3320A_DEFAULT_WAIT_TIME); } static int al3320a_read_raw(struct iio_dev *indio_dev, @@ -131,7 +135,7 @@ static int al3320a_read_raw(struct iio_dev *indio_dev, int *val2, long mask) { struct al3320a_data *data = iio_priv(indio_dev); - int ret; + int ret, gain, raw; switch (mask) { case IIO_CHAN_INFO_RAW: @@ -140,21 +144,21 @@ static int al3320a_read_raw(struct iio_dev *indio_dev, * - low byte of output is stored at AL3320A_REG_DATA_LOW * - high byte of output is stored at AL3320A_REG_DATA_LOW + 1 */ - ret = i2c_smbus_read_word_data(data->client, - AL3320A_REG_DATA_LOW); - if (ret < 0) + ret = regmap_read(data->regmap, AL3320A_REG_DATA_LOW, &raw); + if (ret) return ret; - *val = ret; + + *val = raw; + return IIO_VAL_INT; case IIO_CHAN_INFO_SCALE: - ret = i2c_smbus_read_byte_data(data->client, - AL3320A_REG_CONFIG_RANGE); - if (ret < 0) + ret = regmap_read(data->regmap, AL3320A_REG_CONFIG_RANGE, &gain); + if (ret) return ret; - ret = FIELD_GET(AL3320A_GAIN_MASK, ret); - *val = al3320a_scales[ret][0]; - *val2 = al3320a_scales[ret][1]; + gain = FIELD_GET(AL3320A_GAIN_MASK, gain); + *val = al3320a_scales[gain][0]; + *val2 = al3320a_scales[gain][1]; return IIO_VAL_INT_PLUS_MICRO; } @@ -175,9 +179,8 @@ static int al3320a_write_raw(struct iio_dev *indio_dev, val2 != al3320a_scales[i][1]) continue; - return i2c_smbus_write_byte_data(data->client, - AL3320A_REG_CONFIG_RANGE, - FIELD_PREP(AL3320A_GAIN_MASK, i)); + return regmap_write(data->regmap, AL3320A_REG_CONFIG_RANGE, + FIELD_PREP(AL3320A_GAIN_MASK, i)); } break; } @@ -203,7 +206,11 @@ static int al3320a_probe(struct i2c_client *client) data = iio_priv(indio_dev); i2c_set_clientdata(client, indio_dev); - data->client = client; + + data->regmap = devm_regmap_init_i2c(client, &al3320a_regmap_config); + if (IS_ERR(data->regmap)) + return dev_err_probe(dev, PTR_ERR(data->regmap), + "cannot allocate regmap\n"); indio_dev->info = &al3320a_info; indio_dev->name = "al3320a"; @@ -230,7 +237,9 @@ static int al3320a_suspend(struct device *dev) static int al3320a_resume(struct device *dev) { - return al3320a_set_pwr_on(to_i2c_client(dev)); + struct al3320a_data *data = iio_priv(dev_get_drvdata(dev)); + + return al3320a_set_pwr_on(data); } static DEFINE_SIMPLE_DEV_PM_OPS(al3320a_pm_ops, al3320a_suspend, -- cgit v1.2.3 From 04f0bc81d6017b9ec80fbe0e00fe9ee02cfd42c4 Mon Sep 17 00:00:00 2001 From: Matti Vaittinen Date: Wed, 2 Apr 2025 09:44:36 +0300 Subject: dt-bindings: Add ROHM BD7970x variants The ROHM BD79700, BD79701 and BD79702 are subsets of the BD79703 DAC. The main difference is the number of the channels. BD79703 has 6 channels. The BD79702 has 4, BD79701 3 and BD79700 2 channels. Additionally, the BD79700 and BD79701 do not have separate Vfs pin but use the Vcc also for the full-scale voltage. Add properties for the BD79700, BD79701 and BD79702. Signed-off-by: Matti Vaittinen Acked-by: Conor Dooley Link: https://patch.msgid.link/0a114565e4de52bf8f98c4f9d17943e5148b0112.1743576022.git.mazziesaccount@gmail.com Signed-off-by: Jonathan Cameron --- .../devicetree/bindings/iio/dac/rohm,bd79703.yaml | 33 +++++++++++++++++----- 1 file changed, 26 insertions(+), 7 deletions(-) diff --git a/Documentation/devicetree/bindings/iio/dac/rohm,bd79703.yaml b/Documentation/devicetree/bindings/iio/dac/rohm,bd79703.yaml index 188b00333dfb..c00fa50e42e8 100644 --- a/Documentation/devicetree/bindings/iio/dac/rohm,bd79703.yaml +++ b/Documentation/devicetree/bindings/iio/dac/rohm,bd79703.yaml @@ -5,19 +5,26 @@ $id: http://devicetree.org/schemas/iio/dac/rohm,bd79703.yaml# $schema: http://devicetree.org/meta-schemas/core.yaml# -title: ROHM BD79703 DAC device driver +title: ROHM BD79700, BD79701, BD79702 and BD79703 DACs maintainers: - Matti Vaittinen description: | - The ROHM BD79703 is a 6 channel, 8-bit DAC. - Datasheet can be found here: + The ROHM BD7970[0,1,2,3] are 8-bit DACs. The BD79700 has 2 channels, + BD79701 3 channels, BD79702 4 channels and BD79703 has 6 channels. + Datasheets for BD79702 and BD79703 can be found from https://fscdn.rohm.com/en/products/databook/datasheet/ic/data_converter/dac/bd79702fv-lb_bd79703fv-lb-e.pdf + and for the BD79700 and the BD79701 from + https://fscdn.rohm.com/en/products/databook/datasheet/ic/data_converter/dac/bd79700fvm-lb_bd79701fvm-lb-e.pdf properties: compatible: - const: rohm,bd79703 + enum: + - rohm,bd79700 + - rohm,bd79701 + - rohm,bd79702 + - rohm,bd79703 reg: maxItems: 1 @@ -27,19 +34,31 @@ properties: vfs-supply: description: - The regulator to use as a full scale voltage. The voltage should be between 2.7V .. VCC + The regulator to use as a full scale voltage. The voltage should be + between 2.7V .. VCC. Not present on BD79700 and BD79701. vcc-supply: description: - The regulator supplying the operating voltage. Should be between 2.7V ... 5.5V + The regulator supplying the operating voltage. Should be between + 2.7V ... 5.5V. Is used also as a Vfs on BD79700 and BD79701. required: - compatible - reg - spi-max-frequency - - vfs-supply - vcc-supply +if: + properties: + compatible: + contains: + enum: + - rohm,bd79702 + - rohm,bd79703 +then: + required: + - vfs-supply + allOf: - $ref: /schemas/spi/spi-peripheral-props.yaml# -- cgit v1.2.3 From f026928c20ba47ce6ca7d52aaa28a834914ed580 Mon Sep 17 00:00:00 2001 From: Matti Vaittinen Date: Wed, 2 Apr 2025 09:45:56 +0300 Subject: iio: dac: bd79703 Store device address to 'address' The ROHM BD79703 needs to identify a channel which we are reading from in the SPI transfers. This can be seen as an address for the device. For the bd79703 the address is nicely aligned with the channel number, so the driver uses the channel ID for the SPI transfers. This, however, does not need to be the case. The iio_chan_spec has a separate 'address' field, which we can populate directly with this information. This helps adding new ICs like the ROHM BD79702 where the channel ID is different from this address to be handled by this driver, so we don't need to have separate, IC specific mapping for channel numbers <=> addresses. Make the 'address' field in the iio_chan_spec to contain the SPI protocol address for the channel, and use this value in the transfers. Signed-off-by: Matti Vaittinen Link: https://patch.msgid.link/e53cb4120d16a3c678e1f391b600af630d6767ce.1743576022.git.mazziesaccount@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/dac/rohm-bd79703.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/iio/dac/rohm-bd79703.c b/drivers/iio/dac/rohm-bd79703.c index e998ab51052e..236aa98bf005 100644 --- a/drivers/iio/dac/rohm-bd79703.c +++ b/drivers/iio/dac/rohm-bd79703.c @@ -67,7 +67,7 @@ static int bd79703_write_raw(struct iio_dev *idev, if (val < 0 || val >= 1 << BD79703_DAC_BITS) return -EINVAL; - return regmap_write(data->regmap, chan->channel + 1, val); + return regmap_write(data->regmap, chan->address, val); }; static const struct iio_info bd79703_info = { @@ -82,7 +82,7 @@ static const struct iio_info bd79703_info = { .channel = (_chan), \ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \ - .address = (_chan), \ + .address = (_chan + 1), \ } static const struct iio_chan_spec bd79703_channels[] = { -- cgit v1.2.3 From 67c318c46cec4da84e24010029718f90812bdfff Mon Sep 17 00:00:00 2001 From: Matti Vaittinen Date: Wed, 2 Apr 2025 09:46:13 +0300 Subject: iio: dac: bd79703: Add chip data Add a chip data structure which allows handling the different variants (ROHM BD79700, BD79701) with different number of channels. Signed-off-by: Matti Vaittinen Link: https://patch.msgid.link/2cacb4bec5455fe1aa58a0b28d2d91b96a396d1a.1743576022.git.mazziesaccount@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/dac/rohm-bd79703.c | 29 ++++++++++++++++++++++++----- 1 file changed, 24 insertions(+), 5 deletions(-) diff --git a/drivers/iio/dac/rohm-bd79703.c b/drivers/iio/dac/rohm-bd79703.c index 236aa98bf005..35e1b1134ec6 100644 --- a/drivers/iio/dac/rohm-bd79703.c +++ b/drivers/iio/dac/rohm-bd79703.c @@ -38,11 +38,19 @@ static const struct regmap_config bd79703_regmap_config = { .cache_type = REGCACHE_RBTREE, }; +/* Dynamic driver private data */ struct bd79703_data { struct regmap *regmap; int vfs; }; +/* Static, IC type specific data for different variants */ +struct bd7970x_chip_data { + const char *name; + const struct iio_chan_spec *channels; + int num_channels; +}; + static int bd79703_read_raw(struct iio_dev *idev, struct iio_chan_spec const *chan, int *val, int *val2, long mask) @@ -94,13 +102,24 @@ static const struct iio_chan_spec bd79703_channels[] = { BD79703_CHAN(5), }; +static const struct bd7970x_chip_data bd79703_chip_data = { + .name = "bd79703", + .channels = bd79703_channels, + .num_channels = ARRAY_SIZE(bd79703_channels), +}; + static int bd79703_probe(struct spi_device *spi) { + const struct bd7970x_chip_data *cd; struct device *dev = &spi->dev; struct bd79703_data *data; struct iio_dev *idev; int ret; + cd = spi_get_device_match_data(spi); + if (!cd) + return -ENODEV; + idev = devm_iio_device_alloc(dev, sizeof(*data)); if (!idev) return -ENOMEM; @@ -121,11 +140,11 @@ static int bd79703_probe(struct spi_device *spi) return dev_err_probe(dev, ret, "Failed to get Vfs\n"); data->vfs = ret; - idev->channels = bd79703_channels; - idev->num_channels = ARRAY_SIZE(bd79703_channels); + idev->channels = cd->channels; + idev->num_channels = cd->num_channels; idev->modes = INDIO_DIRECT_MODE; idev->info = &bd79703_info; - idev->name = "bd79703"; + idev->name = cd->name; /* Initialize all to output zero */ ret = regmap_write(data->regmap, BD79703_REG_OUT_ALL, 0); @@ -136,13 +155,13 @@ static int bd79703_probe(struct spi_device *spi) } static const struct spi_device_id bd79703_id[] = { - { "bd79703", }, + { "bd79703", (kernel_ulong_t)&bd79703_chip_data }, { } }; MODULE_DEVICE_TABLE(spi, bd79703_id); static const struct of_device_id bd79703_of_match[] = { - { .compatible = "rohm,bd79703", }, + { .compatible = "rohm,bd79703", .data = &bd79703_chip_data }, { } }; MODULE_DEVICE_TABLE(of, bd79703_of_match); -- cgit v1.2.3 From 25468dbb81fcc75cdaa9b2a0c2b652bc5c55a8a1 Mon Sep 17 00:00:00 2001 From: Matti Vaittinen Date: Wed, 2 Apr 2025 09:46:30 +0300 Subject: iio: dac: bd79703: Support BD79700 and BD79701 The BD79700 and BD79701 look like almost exact subsets of the BD79703. The BD79703 contains 6 channels (channels 0 to 5). The BD79700 provides only 2 channels, matching the BD79703 channels 0 and 1. The BD79701 provides 3 channels (matching BD79703 channels 0, 1, and 2). Furthermore, the BD79700 and BD79701 do not have separate VFS pin but use VCC for the full-scale voltage. Suopport these ICs using the BD79703 driver. Signed-off-by: Matti Vaittinen Link: https://patch.msgid.link/845aa45974f6fb81c83046368a24a0674e9a8b0e.1743576022.git.mazziesaccount@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/dac/rohm-bd79703.c | 57 ++++++++++++++++++++++++++++++++++++------ 1 file changed, 49 insertions(+), 8 deletions(-) diff --git a/drivers/iio/dac/rohm-bd79703.c b/drivers/iio/dac/rohm-bd79703.c index 35e1b1134ec6..63a70fbd7e0e 100644 --- a/drivers/iio/dac/rohm-bd79703.c +++ b/drivers/iio/dac/rohm-bd79703.c @@ -49,6 +49,7 @@ struct bd7970x_chip_data { const char *name; const struct iio_chan_spec *channels; int num_channels; + bool has_vfs; }; static int bd79703_read_raw(struct iio_dev *idev, @@ -93,6 +94,17 @@ static const struct iio_info bd79703_info = { .address = (_chan + 1), \ } +static const struct iio_chan_spec bd79700_channels[] = { + BD79703_CHAN(0), + BD79703_CHAN(1), +}; + +static const struct iio_chan_spec bd79701_channels[] = { + BD79703_CHAN(0), + BD79703_CHAN(1), + BD79703_CHAN(2), +}; + static const struct iio_chan_spec bd79703_channels[] = { BD79703_CHAN(0), BD79703_CHAN(1), @@ -102,10 +114,25 @@ static const struct iio_chan_spec bd79703_channels[] = { BD79703_CHAN(5), }; +static const struct bd7970x_chip_data bd79700_chip_data = { + .name = "bd79700", + .channels = bd79700_channels, + .num_channels = ARRAY_SIZE(bd79700_channels), + .has_vfs = false, +}; + +static const struct bd7970x_chip_data bd79701_chip_data = { + .name = "bd79701", + .channels = bd79701_channels, + .num_channels = ARRAY_SIZE(bd79701_channels), + .has_vfs = false, +}; + static const struct bd7970x_chip_data bd79703_chip_data = { .name = "bd79703", .channels = bd79703_channels, .num_channels = ARRAY_SIZE(bd79703_channels), + .has_vfs = true, }; static int bd79703_probe(struct spi_device *spi) @@ -131,15 +158,25 @@ static int bd79703_probe(struct spi_device *spi) return dev_err_probe(dev, PTR_ERR(data->regmap), "Failed to initialize Regmap\n"); - ret = devm_regulator_get_enable(dev, "vcc"); - if (ret) - return dev_err_probe(dev, ret, "Failed to enable VCC\n"); - - ret = devm_regulator_get_enable_read_voltage(dev, "vfs"); - if (ret < 0) - return dev_err_probe(dev, ret, "Failed to get Vfs\n"); - + /* + * BD79703 has a separate VFS pin, whereas the BD79700 and BD79701 use + * VCC for their full-scale output voltage. + */ + if (cd->has_vfs) { + ret = devm_regulator_get_enable(dev, "vcc"); + if (ret) + return dev_err_probe(dev, ret, "Failed to enable VCC\n"); + + ret = devm_regulator_get_enable_read_voltage(dev, "vfs"); + if (ret < 0) + return dev_err_probe(dev, ret, "Failed to get Vfs\n"); + } else { + ret = devm_regulator_get_enable_read_voltage(dev, "vcc"); + if (ret < 0) + return dev_err_probe(dev, ret, "Failed to get VCC\n"); + } data->vfs = ret; + idev->channels = cd->channels; idev->num_channels = cd->num_channels; idev->modes = INDIO_DIRECT_MODE; @@ -155,12 +192,16 @@ static int bd79703_probe(struct spi_device *spi) } static const struct spi_device_id bd79703_id[] = { + { "bd79700", (kernel_ulong_t)&bd79700_chip_data }, + { "bd79701", (kernel_ulong_t)&bd79701_chip_data }, { "bd79703", (kernel_ulong_t)&bd79703_chip_data }, { } }; MODULE_DEVICE_TABLE(spi, bd79703_id); static const struct of_device_id bd79703_of_match[] = { + { .compatible = "rohm,bd79700", .data = &bd79700_chip_data }, + { .compatible = "rohm,bd79701", .data = &bd79701_chip_data }, { .compatible = "rohm,bd79703", .data = &bd79703_chip_data }, { } }; -- cgit v1.2.3 From 7a84e33afebd97b46b994c1d78d57ab88a180e9a Mon Sep 17 00:00:00 2001 From: Matti Vaittinen Date: Wed, 2 Apr 2025 09:46:44 +0300 Subject: iio: dac: bd79703: Support ROHM BD79702 The ROHM BD79702 is similar to the BD79703, except that it has only 4 channels whereas BD79703 has 6 channels. The channel 'addresses' of the first two channels (used to identify the channel when data is read over SPI) are same for both ICs. The next two channels of the BD79702 have same addresses as the last two channels of the BD79703. This means the BD79702 channel addresses do not follow the channel numbers with a constant offset. Thus, we need to specify the addresses separately, instead of directly deriving them from the channel number with a constant offset. It's worth noting that the data-sheet describes the BD79702 as a device having channels 1,2,5 and 6. The driver however represents channels 0,1,2,3 to the users - with no gaps in the numbering - which may be more familiar view for the application software. Support ROHM BD79702 DAC. Signed-off-by: Matti Vaittinen Link: https://patch.msgid.link/0ba243a63115dd4af03ebf9656c65b8c259a3e34.1743576022.git.mazziesaccount@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/dac/rohm-bd79703.c | 28 ++++++++++++++++++++++++++-- 1 file changed, 26 insertions(+), 2 deletions(-) diff --git a/drivers/iio/dac/rohm-bd79703.c b/drivers/iio/dac/rohm-bd79703.c index 63a70fbd7e0e..a35c37d2261d 100644 --- a/drivers/iio/dac/rohm-bd79703.c +++ b/drivers/iio/dac/rohm-bd79703.c @@ -84,16 +84,18 @@ static const struct iio_info bd79703_info = { .write_raw = bd79703_write_raw, }; -#define BD79703_CHAN(_chan) { \ +#define BD79703_CHAN_ADDR(_chan, _addr) { \ .type = IIO_VOLTAGE, \ .indexed = 1, \ .output = 1, \ .channel = (_chan), \ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \ - .address = (_chan + 1), \ + .address = (_addr), \ } +#define BD79703_CHAN(_chan) BD79703_CHAN_ADDR((_chan), (_chan) + 1) + static const struct iio_chan_spec bd79700_channels[] = { BD79703_CHAN(0), BD79703_CHAN(1), @@ -105,6 +107,19 @@ static const struct iio_chan_spec bd79701_channels[] = { BD79703_CHAN(2), }; +/* + * The BD79702 has 4 channels. They aren't mapped to BD79703 channels 0, 1, 2 + * and 3, but to the channels 0, 1, 4, 5. So the addressing used with SPI + * accesses is 1, 2, 5 and 6 for them. Thus, they're not constant offset to + * the channel number as with other IC variants. + */ +static const struct iio_chan_spec bd79702_channels[] = { + BD79703_CHAN_ADDR(0, 1), + BD79703_CHAN_ADDR(1, 2), + BD79703_CHAN_ADDR(2, 5), + BD79703_CHAN_ADDR(3, 6), +}; + static const struct iio_chan_spec bd79703_channels[] = { BD79703_CHAN(0), BD79703_CHAN(1), @@ -128,6 +143,13 @@ static const struct bd7970x_chip_data bd79701_chip_data = { .has_vfs = false, }; +static const struct bd7970x_chip_data bd79702_chip_data = { + .name = "bd79702", + .channels = bd79702_channels, + .num_channels = ARRAY_SIZE(bd79702_channels), + .has_vfs = true, +}; + static const struct bd7970x_chip_data bd79703_chip_data = { .name = "bd79703", .channels = bd79703_channels, @@ -194,6 +216,7 @@ static int bd79703_probe(struct spi_device *spi) static const struct spi_device_id bd79703_id[] = { { "bd79700", (kernel_ulong_t)&bd79700_chip_data }, { "bd79701", (kernel_ulong_t)&bd79701_chip_data }, + { "bd79702", (kernel_ulong_t)&bd79702_chip_data }, { "bd79703", (kernel_ulong_t)&bd79703_chip_data }, { } }; @@ -202,6 +225,7 @@ MODULE_DEVICE_TABLE(spi, bd79703_id); static const struct of_device_id bd79703_of_match[] = { { .compatible = "rohm,bd79700", .data = &bd79700_chip_data }, { .compatible = "rohm,bd79701", .data = &bd79701_chip_data }, + { .compatible = "rohm,bd79702", .data = &bd79702_chip_data }, { .compatible = "rohm,bd79703", .data = &bd79703_chip_data }, { } }; -- cgit v1.2.3 From ff2e2a5c524f414c2b9a5926835d871fb4291c06 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Mon, 31 Mar 2025 14:29:54 -0500 Subject: iio: adc: ad7944: drop bits_per_word hack MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Remove setting bits_per_word in SPI xfers without data. The shortcoming that this was working around was fixed in the SPI controller driver, so it is no longer necessary. And we don't need this to be cargo-culted to new drivers. Signed-off-by: David Lechner Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250331-iio-adc-ad7944-drop-bits_per_word-hack-v1-1-2b952e033340@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7944.c | 11 ----------- 1 file changed, 11 deletions(-) diff --git a/drivers/iio/adc/ad7944.c b/drivers/iio/adc/ad7944.c index 2f949fe55873..70f313545af2 100644 --- a/drivers/iio/adc/ad7944.c +++ b/drivers/iio/adc/ad7944.c @@ -189,11 +189,6 @@ static int ad7944_3wire_cs_mode_init_msg(struct device *dev, struct ad7944_adc * : adc->timing_spec->conv_ns; struct spi_transfer *xfers = adc->xfers; - /* - * NB: can get better performance from some SPI controllers if we use - * the same bits_per_word in every transfer. - */ - xfers[0].bits_per_word = chan->scan_type.realbits; /* * CS is tied to CNV and we need a low to high transition to start the * conversion, so place CNV low for t_QUIET to prepare for this. @@ -208,7 +203,6 @@ static int ad7944_3wire_cs_mode_init_msg(struct device *dev, struct ad7944_adc * xfers[1].cs_off = 1; xfers[1].delay.value = t_conv_ns; xfers[1].delay.unit = SPI_DELAY_UNIT_NSECS; - xfers[1].bits_per_word = chan->scan_type.realbits; /* Then we can read the data during the acquisition phase */ xfers[2].rx_buf = &adc->sample.raw; @@ -227,11 +221,6 @@ static int ad7944_4wire_mode_init_msg(struct device *dev, struct ad7944_adc *adc : adc->timing_spec->conv_ns; struct spi_transfer *xfers = adc->xfers; - /* - * NB: can get better performance from some SPI controllers if we use - * the same bits_per_word in every transfer. - */ - xfers[0].bits_per_word = chan->scan_type.realbits; /* * CS has to be high for full conversion time to avoid triggering the * busy indication. -- cgit v1.2.3 From 59b51edf717b0661a2aad8eb6cc9ff09611830fe Mon Sep 17 00:00:00 2001 From: Marcelo Schmitt Date: Thu, 27 Mar 2025 18:24:35 -0300 Subject: iio: adc: ad4000: Add support for SPI offload FPGA HDL projects can include a PWM generator in addition to SPI-Engine. The PWM IP is used to trigger SPI-Engine offload modules that in turn set SPI-Engine to execute transfers to poll data from the ADC. That allows data to be read at the maximum sample rates. Also, it is possible to set a specific sample rate by setting the proper PWM duty cycle and related state parameters, thus allowing an adjustable ADC sample rate when a PWM (offload trigger) is used in combination with SPI-Engine. Add support for SPI offload. Signed-off-by: Marcelo Schmitt Link: https://patch.msgid.link/386ce043a0e3fc9e8ff71f17aef8de128ce5869e.1743110188.git.marcelo.schmitt@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/Kconfig | 7 +- drivers/iio/adc/ad4000.c | 382 ++++++++++++++++++++++++++++++++++++++++++----- 2 files changed, 354 insertions(+), 35 deletions(-) diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig index 859c77f40f1d..5741de4747bb 100644 --- a/drivers/iio/adc/Kconfig +++ b/drivers/iio/adc/Kconfig @@ -28,10 +28,15 @@ config AD4000 tristate "Analog Devices AD4000 ADC Driver" depends on SPI select IIO_BUFFER + select IIO_BUFFER_DMAENGINE select IIO_TRIGGERED_BUFFER + select SPI_OFFLOAD help Say yes here to build support for Analog Devices AD4000 high speed - SPI analog to digital converters (ADC). + SPI analog to digital converters (ADC). If intended to use with + SPI offloading support, it is recommended to enable + CONFIG_SPI_AXI_SPI_ENGINE, CONFIG_PWM_AXI_PWMGEN, and + CONFIG_SPI_OFFLOAD_TRIGGER_PWM. To compile this driver as a module, choose M here: the module will be called ad4000. diff --git a/drivers/iio/adc/ad4000.c b/drivers/iio/adc/ad4000.c index 4fe8dee48da9..e69a9d2a3e8c 100644 --- a/drivers/iio/adc/ad4000.c +++ b/drivers/iio/adc/ad4000.c @@ -15,12 +15,14 @@ #include #include #include +#include #include #include #include -#include +#include #include +#include #include #include @@ -32,10 +34,11 @@ /* AD4000 Configuration Register programmable bits */ #define AD4000_CFG_SPAN_COMP BIT(3) /* Input span compression */ #define AD4000_CFG_HIGHZ BIT(2) /* High impedance mode */ +#define AD4000_CFG_TURBO BIT(1) /* Turbo mode */ #define AD4000_SCALE_OPTIONS 2 -#define __AD4000_DIFF_CHANNEL(_sign, _real_bits, _storage_bits, _reg_access) \ +#define __AD4000_DIFF_CHANNEL(_sign, _real_bits, _storage_bits, _reg_access, _offl)\ { \ .type = IIO_VOLTAGE, \ .indexed = 1, \ @@ -43,54 +46,65 @@ .channel = 0, \ .channel2 = 1, \ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \ - BIT(IIO_CHAN_INFO_SCALE), \ + BIT(IIO_CHAN_INFO_SCALE) | \ + (_offl ? BIT(IIO_CHAN_INFO_SAMP_FREQ) : 0), \ .info_mask_separate_available = _reg_access ? BIT(IIO_CHAN_INFO_SCALE) : 0,\ .scan_index = 0, \ .scan_type = { \ .sign = _sign, \ .realbits = _real_bits, \ .storagebits = _storage_bits, \ - .shift = _storage_bits - _real_bits, \ - .endianness = IIO_BE, \ + .shift = (_offl ? 0 : _storage_bits - _real_bits), \ + .endianness = _offl ? IIO_CPU : IIO_BE \ }, \ } -#define AD4000_DIFF_CHANNEL(_sign, _real_bits, _reg_access) \ +#define AD4000_DIFF_CHANNEL(_sign, _real_bits, _reg_access, _offl) \ __AD4000_DIFF_CHANNEL((_sign), (_real_bits), \ - ((_real_bits) > 16 ? 32 : 16), (_reg_access)) + (((_offl) || ((_real_bits) > 16)) ? 32 : 16), \ + (_reg_access), (_offl)) +/* + * When SPI offload is configured, transfers are executed without CPU + * intervention so no soft timestamp can be recorded when transfers run. + * Because of that, the macros that set timestamp channel are only used when + * transfers are not offloaded. + */ #define AD4000_DIFF_CHANNELS(_sign, _real_bits, _reg_access) \ { \ - AD4000_DIFF_CHANNEL(_sign, _real_bits, _reg_access), \ + AD4000_DIFF_CHANNEL(_sign, _real_bits, _reg_access, 0), \ IIO_CHAN_SOFT_TIMESTAMP(1), \ } -#define __AD4000_PSEUDO_DIFF_CHANNEL(_sign, _real_bits, _storage_bits, _reg_access)\ +#define __AD4000_PSEUDO_DIFF_CHANNEL(_sign, _real_bits, _storage_bits, \ + _reg_access, _offl) \ { \ .type = IIO_VOLTAGE, \ .indexed = 1, \ .channel = 0, \ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \ BIT(IIO_CHAN_INFO_SCALE) | \ - BIT(IIO_CHAN_INFO_OFFSET), \ + BIT(IIO_CHAN_INFO_OFFSET) | \ + (_offl ? BIT(IIO_CHAN_INFO_SAMP_FREQ) : 0), \ .info_mask_separate_available = _reg_access ? BIT(IIO_CHAN_INFO_SCALE) : 0,\ .scan_index = 0, \ .scan_type = { \ .sign = _sign, \ .realbits = _real_bits, \ .storagebits = _storage_bits, \ - .shift = _storage_bits - _real_bits, \ - .endianness = IIO_BE, \ + .shift = (_offl ? 0 : _storage_bits - _real_bits), \ + .endianness = _offl ? IIO_CPU : IIO_BE \ }, \ } -#define AD4000_PSEUDO_DIFF_CHANNEL(_sign, _real_bits, _reg_access) \ +#define AD4000_PSEUDO_DIFF_CHANNEL(_sign, _real_bits, _reg_access, _offl) \ __AD4000_PSEUDO_DIFF_CHANNEL((_sign), (_real_bits), \ - ((_real_bits) > 16 ? 32 : 16), (_reg_access)) + (((_offl) || ((_real_bits) > 16)) ? 32 : 16),\ + (_reg_access), (_offl)) #define AD4000_PSEUDO_DIFF_CHANNELS(_sign, _real_bits, _reg_access) \ { \ - AD4000_PSEUDO_DIFF_CHANNEL(_sign, _real_bits, _reg_access), \ + AD4000_PSEUDO_DIFF_CHANNEL(_sign, _real_bits, _reg_access, 0), \ IIO_CHAN_SOFT_TIMESTAMP(1), \ } @@ -184,212 +198,298 @@ struct ad4000_chip_info { const char *dev_name; struct iio_chan_spec chan_spec[2]; struct iio_chan_spec reg_access_chan_spec[2]; + struct iio_chan_spec offload_chan_spec; + struct iio_chan_spec reg_access_offload_chan_spec; const struct ad4000_time_spec *time_spec; bool has_hardware_gain; + int max_rate_hz; }; static const struct ad4000_chip_info ad4000_chip_info = { .dev_name = "ad4000", .chan_spec = AD4000_PSEUDO_DIFF_CHANNELS('u', 16, 0), .reg_access_chan_spec = AD4000_PSEUDO_DIFF_CHANNELS('u', 16, 1), + .offload_chan_spec = AD4000_PSEUDO_DIFF_CHANNEL('u', 16, 0, 1), + .reg_access_offload_chan_spec = AD4000_PSEUDO_DIFF_CHANNEL('u', 16, 1, 1), .time_spec = &ad4000_t_spec, + .max_rate_hz = 2 * MEGA, }; static const struct ad4000_chip_info ad4001_chip_info = { .dev_name = "ad4001", .chan_spec = AD4000_DIFF_CHANNELS('s', 16, 0), .reg_access_chan_spec = AD4000_DIFF_CHANNELS('s', 16, 1), + .offload_chan_spec = AD4000_DIFF_CHANNEL('s', 16, 0, 1), + .reg_access_offload_chan_spec = AD4000_DIFF_CHANNEL('s', 16, 1, 1), .time_spec = &ad4000_t_spec, + .max_rate_hz = 2 * MEGA, }; static const struct ad4000_chip_info ad4002_chip_info = { .dev_name = "ad4002", .chan_spec = AD4000_PSEUDO_DIFF_CHANNELS('u', 18, 0), .reg_access_chan_spec = AD4000_PSEUDO_DIFF_CHANNELS('u', 18, 1), + .offload_chan_spec = AD4000_PSEUDO_DIFF_CHANNEL('u', 18, 0, 1), + .reg_access_offload_chan_spec = AD4000_PSEUDO_DIFF_CHANNEL('u', 18, 1, 1), .time_spec = &ad4000_t_spec, + .max_rate_hz = 2 * MEGA, }; static const struct ad4000_chip_info ad4003_chip_info = { .dev_name = "ad4003", .chan_spec = AD4000_DIFF_CHANNELS('s', 18, 0), .reg_access_chan_spec = AD4000_DIFF_CHANNELS('s', 18, 1), + .offload_chan_spec = AD4000_DIFF_CHANNEL('s', 18, 0, 1), + .reg_access_offload_chan_spec = AD4000_DIFF_CHANNEL('s', 18, 1, 1), .time_spec = &ad4000_t_spec, + .max_rate_hz = 2 * MEGA, }; static const struct ad4000_chip_info ad4004_chip_info = { .dev_name = "ad4004", .chan_spec = AD4000_PSEUDO_DIFF_CHANNELS('u', 16, 0), .reg_access_chan_spec = AD4000_PSEUDO_DIFF_CHANNELS('u', 16, 1), + .offload_chan_spec = AD4000_PSEUDO_DIFF_CHANNEL('u', 16, 0, 1), + .reg_access_offload_chan_spec = AD4000_PSEUDO_DIFF_CHANNEL('u', 16, 1, 1), .time_spec = &ad4000_t_spec, + .max_rate_hz = 1 * MEGA, }; static const struct ad4000_chip_info ad4005_chip_info = { .dev_name = "ad4005", .chan_spec = AD4000_DIFF_CHANNELS('s', 16, 0), .reg_access_chan_spec = AD4000_DIFF_CHANNELS('s', 16, 1), + .offload_chan_spec = AD4000_DIFF_CHANNEL('s', 16, 0, 1), + .reg_access_offload_chan_spec = AD4000_DIFF_CHANNEL('s', 16, 1, 1), .time_spec = &ad4000_t_spec, + .max_rate_hz = 1 * MEGA, }; static const struct ad4000_chip_info ad4006_chip_info = { .dev_name = "ad4006", .chan_spec = AD4000_PSEUDO_DIFF_CHANNELS('u', 18, 0), .reg_access_chan_spec = AD4000_PSEUDO_DIFF_CHANNELS('u', 18, 1), + .offload_chan_spec = AD4000_PSEUDO_DIFF_CHANNEL('u', 18, 0, 1), + .reg_access_offload_chan_spec = AD4000_PSEUDO_DIFF_CHANNEL('u', 18, 1, 1), .time_spec = &ad4000_t_spec, + .max_rate_hz = 1 * MEGA, }; static const struct ad4000_chip_info ad4007_chip_info = { .dev_name = "ad4007", .chan_spec = AD4000_DIFF_CHANNELS('s', 18, 0), .reg_access_chan_spec = AD4000_DIFF_CHANNELS('s', 18, 1), + .offload_chan_spec = AD4000_DIFF_CHANNEL('s', 18, 0, 1), + .reg_access_offload_chan_spec = AD4000_DIFF_CHANNEL('s', 18, 1, 1), .time_spec = &ad4000_t_spec, + .max_rate_hz = 1 * MEGA, }; static const struct ad4000_chip_info ad4008_chip_info = { .dev_name = "ad4008", .chan_spec = AD4000_PSEUDO_DIFF_CHANNELS('u', 16, 0), .reg_access_chan_spec = AD4000_PSEUDO_DIFF_CHANNELS('u', 16, 1), + .offload_chan_spec = AD4000_PSEUDO_DIFF_CHANNEL('u', 16, 0, 1), + .reg_access_offload_chan_spec = AD4000_PSEUDO_DIFF_CHANNEL('u', 16, 1, 1), .time_spec = &ad4000_t_spec, + .max_rate_hz = 500 * KILO, }; static const struct ad4000_chip_info ad4010_chip_info = { .dev_name = "ad4010", .chan_spec = AD4000_PSEUDO_DIFF_CHANNELS('u', 18, 0), .reg_access_chan_spec = AD4000_PSEUDO_DIFF_CHANNELS('u', 18, 1), + .offload_chan_spec = AD4000_PSEUDO_DIFF_CHANNEL('u', 18, 0, 1), + .reg_access_offload_chan_spec = AD4000_PSEUDO_DIFF_CHANNEL('u', 18, 1, 1), .time_spec = &ad4000_t_spec, + .max_rate_hz = 500 * KILO, }; static const struct ad4000_chip_info ad4011_chip_info = { .dev_name = "ad4011", .chan_spec = AD4000_DIFF_CHANNELS('s', 18, 0), .reg_access_chan_spec = AD4000_DIFF_CHANNELS('s', 18, 1), + .offload_chan_spec = AD4000_DIFF_CHANNEL('s', 18, 0, 1), + .reg_access_offload_chan_spec = AD4000_DIFF_CHANNEL('s', 18, 1, 1), .time_spec = &ad4000_t_spec, + .max_rate_hz = 500 * KILO, }; static const struct ad4000_chip_info ad4020_chip_info = { .dev_name = "ad4020", .chan_spec = AD4000_DIFF_CHANNELS('s', 20, 0), .reg_access_chan_spec = AD4000_DIFF_CHANNELS('s', 20, 1), + .offload_chan_spec = AD4000_DIFF_CHANNEL('s', 20, 0, 1), + .reg_access_offload_chan_spec = AD4000_DIFF_CHANNEL('s', 20, 1, 1), .time_spec = &ad4020_t_spec, + .max_rate_hz = 1800 * KILO, }; static const struct ad4000_chip_info ad4021_chip_info = { .dev_name = "ad4021", .chan_spec = AD4000_DIFF_CHANNELS('s', 20, 0), .reg_access_chan_spec = AD4000_DIFF_CHANNELS('s', 20, 1), + .offload_chan_spec = AD4000_DIFF_CHANNEL('s', 20, 0, 1), + .reg_access_offload_chan_spec = AD4000_DIFF_CHANNEL('s', 20, 1, 1), .time_spec = &ad4020_t_spec, + .max_rate_hz = 1 * MEGA, }; static const struct ad4000_chip_info ad4022_chip_info = { .dev_name = "ad4022", .chan_spec = AD4000_DIFF_CHANNELS('s', 20, 0), .reg_access_chan_spec = AD4000_DIFF_CHANNELS('s', 20, 1), + .offload_chan_spec = AD4000_DIFF_CHANNEL('s', 20, 0, 1), + .reg_access_offload_chan_spec = AD4000_DIFF_CHANNEL('s', 20, 1, 1), .time_spec = &ad4020_t_spec, + .max_rate_hz = 500 * KILO, }; static const struct ad4000_chip_info adaq4001_chip_info = { .dev_name = "adaq4001", .chan_spec = AD4000_DIFF_CHANNELS('s', 16, 0), .reg_access_chan_spec = AD4000_DIFF_CHANNELS('s', 16, 1), + .offload_chan_spec = AD4000_DIFF_CHANNEL('s', 16, 0, 1), + .reg_access_offload_chan_spec = AD4000_DIFF_CHANNEL('s', 16, 1, 1), .time_spec = &ad4000_t_spec, .has_hardware_gain = true, + .max_rate_hz = 2 * MEGA, }; static const struct ad4000_chip_info adaq4003_chip_info = { .dev_name = "adaq4003", .chan_spec = AD4000_DIFF_CHANNELS('s', 18, 0), .reg_access_chan_spec = AD4000_DIFF_CHANNELS('s', 18, 1), + .offload_chan_spec = AD4000_DIFF_CHANNEL('s', 18, 0, 1), + .reg_access_offload_chan_spec = AD4000_DIFF_CHANNEL('s', 18, 1, 1), .time_spec = &ad4000_t_spec, .has_hardware_gain = true, + .max_rate_hz = 2 * MEGA, }; static const struct ad4000_chip_info ad7685_chip_info = { .dev_name = "ad7685", .chan_spec = AD4000_PSEUDO_DIFF_CHANNELS('u', 16, 0), + .offload_chan_spec = AD4000_PSEUDO_DIFF_CHANNEL('u', 16, 0, 1), .time_spec = &ad7687_t_spec, + .max_rate_hz = 250 * KILO, }; static const struct ad4000_chip_info ad7686_chip_info = { .dev_name = "ad7686", .chan_spec = AD4000_PSEUDO_DIFF_CHANNELS('u', 16, 0), + .offload_chan_spec = AD4000_PSEUDO_DIFF_CHANNEL('u', 16, 0, 1), .time_spec = &ad7686_t_spec, + .max_rate_hz = 500 * KILO, }; static const struct ad4000_chip_info ad7687_chip_info = { .dev_name = "ad7687", .chan_spec = AD4000_DIFF_CHANNELS('s', 16, 0), + .offload_chan_spec = AD4000_DIFF_CHANNEL('s', 16, 0, 1), .time_spec = &ad7687_t_spec, + .max_rate_hz = 250 * KILO, }; static const struct ad4000_chip_info ad7688_chip_info = { .dev_name = "ad7688", .chan_spec = AD4000_DIFF_CHANNELS('s', 16, 0), + .offload_chan_spec = AD4000_DIFF_CHANNEL('s', 16, 0, 1), .time_spec = &ad7686_t_spec, + .max_rate_hz = 500 * KILO, }; static const struct ad4000_chip_info ad7690_chip_info = { .dev_name = "ad7690", .chan_spec = AD4000_DIFF_CHANNELS('s', 18, 0), + .offload_chan_spec = AD4000_DIFF_CHANNEL('s', 18, 0, 1), .time_spec = &ad7690_t_spec, + .max_rate_hz = 400 * KILO, }; static const struct ad4000_chip_info ad7691_chip_info = { .dev_name = "ad7691", .chan_spec = AD4000_DIFF_CHANNELS('s', 18, 0), + .offload_chan_spec = AD4000_DIFF_CHANNEL('s', 18, 0, 1), .time_spec = &ad7691_t_spec, + .max_rate_hz = 250 * KILO, }; static const struct ad4000_chip_info ad7693_chip_info = { .dev_name = "ad7693", .chan_spec = AD4000_DIFF_CHANNELS('s', 16, 0), + .offload_chan_spec = AD4000_DIFF_CHANNEL('s', 16, 0, 1), .time_spec = &ad7686_t_spec, + .max_rate_hz = 500 * KILO, }; static const struct ad4000_chip_info ad7942_chip_info = { .dev_name = "ad7942", .chan_spec = AD4000_PSEUDO_DIFF_CHANNELS('u', 14, 0), + .offload_chan_spec = AD4000_PSEUDO_DIFF_CHANNEL('u', 14, 0, 1), .time_spec = &ad7687_t_spec, + .max_rate_hz = 250 * KILO, }; static const struct ad4000_chip_info ad7946_chip_info = { .dev_name = "ad7946", .chan_spec = AD4000_PSEUDO_DIFF_CHANNELS('u', 14, 0), + .offload_chan_spec = AD4000_PSEUDO_DIFF_CHANNEL('u', 14, 0, 1), .time_spec = &ad7686_t_spec, + .max_rate_hz = 500 * KILO, }; static const struct ad4000_chip_info ad7980_chip_info = { .dev_name = "ad7980", .chan_spec = AD4000_PSEUDO_DIFF_CHANNELS('u', 16, 0), + .offload_chan_spec = AD4000_PSEUDO_DIFF_CHANNEL('u', 16, 0, 1), .time_spec = &ad7980_t_spec, + .max_rate_hz = 1 * MEGA, }; static const struct ad4000_chip_info ad7982_chip_info = { .dev_name = "ad7982", .chan_spec = AD4000_DIFF_CHANNELS('s', 18, 0), + .offload_chan_spec = AD4000_DIFF_CHANNEL('s', 18, 0, 1), .time_spec = &ad7980_t_spec, + .max_rate_hz = 1 * MEGA, }; static const struct ad4000_chip_info ad7983_chip_info = { .dev_name = "ad7983", .chan_spec = AD4000_PSEUDO_DIFF_CHANNELS('u', 16, 0), + .offload_chan_spec = AD4000_PSEUDO_DIFF_CHANNEL('u', 16, 0, 1), .time_spec = &ad7983_t_spec, + .max_rate_hz = 1 * MEGA + 333 * KILO + 333, }; static const struct ad4000_chip_info ad7984_chip_info = { .dev_name = "ad7984", .chan_spec = AD4000_DIFF_CHANNELS('s', 18, 0), + .offload_chan_spec = AD4000_DIFF_CHANNEL('s', 18, 0, 1), .time_spec = &ad7983_t_spec, + .max_rate_hz = 1 * MEGA + 333 * KILO + 333, }; static const struct ad4000_chip_info ad7988_1_chip_info = { .dev_name = "ad7988-1", .chan_spec = AD4000_PSEUDO_DIFF_CHANNELS('u', 16, 0), + .offload_chan_spec = AD4000_PSEUDO_DIFF_CHANNEL('u', 16, 0, 1), .time_spec = &ad7988_1_t_spec, + .max_rate_hz = 100 * KILO, }; static const struct ad4000_chip_info ad7988_5_chip_info = { .dev_name = "ad7988-5", .chan_spec = AD4000_PSEUDO_DIFF_CHANNELS('u', 16, 0), + .offload_chan_spec = AD4000_PSEUDO_DIFF_CHANNEL('u', 16, 0, 1), .time_spec = &ad7686_t_spec, + .max_rate_hz = 500 * KILO, +}; + +static const struct spi_offload_config ad4000_offload_config = { + .capability_flags = SPI_OFFLOAD_CAP_TRIGGER | + SPI_OFFLOAD_CAP_RX_STREAM_DMA, }; struct ad4000_state { @@ -397,6 +497,13 @@ struct ad4000_state { struct gpio_desc *cnv_gpio; struct spi_transfer xfers[2]; struct spi_message msg; + struct spi_transfer offload_xfer; + struct spi_message offload_msg; + struct spi_offload *offload; + struct spi_offload_trigger *offload_trigger; + bool using_offload; + unsigned long offload_trigger_hz; + int max_rate_hz; struct mutex lock; /* Protect read modify write cycle */ int vref_mv; enum ad4000_sdi sdi_pin; @@ -411,8 +518,10 @@ struct ad4000_state { */ struct { union { - __be16 sample_buf16; - __be32 sample_buf32; + __be16 sample_buf16_be; + __be32 sample_buf32_be; + u16 sample_buf16; + u32 sample_buf32; } data; aligned_s64 timestamp; } scan __aligned(IIO_DMA_MINALIGN); @@ -487,6 +596,25 @@ static int ad4000_read_reg(struct ad4000_state *st, unsigned int *val) return ret; } +static int ad4000_set_sampling_freq(struct ad4000_state *st, int freq) +{ + struct spi_offload_trigger_config config = { + .type = SPI_OFFLOAD_TRIGGER_PERIODIC, + .periodic = { + .frequency_hz = freq, + }, + }; + int ret; + + ret = spi_offload_trigger_validate(st->offload_trigger, &config); + if (ret) + return ret; + + st->offload_trigger_hz = config.periodic.frequency_hz; + + return 0; +} + static int ad4000_convert_and_acquire(struct ad4000_state *st) { int ret; @@ -515,10 +643,17 @@ static int ad4000_single_conversion(struct iio_dev *indio_dev, if (ret < 0) return ret; - if (chan->scan_type.storagebits > 16) - sample = be32_to_cpu(st->scan.data.sample_buf32); - else - sample = be16_to_cpu(st->scan.data.sample_buf16); + if (chan->scan_type.endianness == IIO_BE) { + if (chan->scan_type.realbits > 16) + sample = be32_to_cpu(st->scan.data.sample_buf32_be); + else + sample = be16_to_cpu(st->scan.data.sample_buf16_be); + } else { + if (chan->scan_type.realbits > 16) + sample = st->scan.data.sample_buf32; + else + sample = st->scan.data.sample_buf16; + } sample >>= chan->scan_type.shift; @@ -554,6 +689,9 @@ static int ad4000_read_raw(struct iio_dev *indio_dev, if (st->span_comp) *val = mult_frac(st->vref_mv, 1, 10); + return IIO_VAL_INT; + case IIO_CHAN_INFO_SAMP_FREQ: + *val = st->offload_trigger_hz; return IIO_VAL_INT; default: return -EINVAL; @@ -620,6 +758,7 @@ static int ad4000_write_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int val, int val2, long mask) { + struct ad4000_state *st = iio_priv(indio_dev); int ret; switch (mask) { @@ -629,6 +768,15 @@ static int ad4000_write_raw(struct iio_dev *indio_dev, ret = __ad4000_write_raw(indio_dev, chan, val2); iio_device_release_direct(indio_dev); return ret; + case IIO_CHAN_INFO_SAMP_FREQ: + if (val < 1 || val > st->max_rate_hz) + return -EINVAL; + + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; + ret = ad4000_set_sampling_freq(st, val); + iio_device_release_direct(indio_dev); + return ret; default: return -EINVAL; } @@ -659,10 +807,114 @@ static const struct iio_info ad4000_reg_access_info = { .write_raw_get_fmt = &ad4000_write_raw_get_fmt, }; +static const struct iio_info ad4000_offload_info = { + .read_raw = &ad4000_read_raw, + .write_raw = &ad4000_write_raw, + .write_raw_get_fmt = &ad4000_write_raw_get_fmt, +}; + static const struct iio_info ad4000_info = { .read_raw = &ad4000_read_raw, }; +static int ad4000_offload_buffer_postenable(struct iio_dev *indio_dev) +{ + struct ad4000_state *st = iio_priv(indio_dev); + struct spi_offload_trigger_config config = { + .type = SPI_OFFLOAD_TRIGGER_PERIODIC, + .periodic = { + .frequency_hz = st->offload_trigger_hz, + }, + }; + + return spi_offload_trigger_enable(st->offload, st->offload_trigger, + &config); +} + +static int ad4000_offload_buffer_predisable(struct iio_dev *indio_dev) +{ + struct ad4000_state *st = iio_priv(indio_dev); + + spi_offload_trigger_disable(st->offload, st->offload_trigger); + + return 0; +} + +static const struct iio_buffer_setup_ops ad4000_offload_buffer_setup_ops = { + .postenable = &ad4000_offload_buffer_postenable, + .predisable = &ad4000_offload_buffer_predisable, +}; + +static int ad4000_spi_offload_setup(struct iio_dev *indio_dev, + struct ad4000_state *st) +{ + struct spi_device *spi = st->spi; + struct device *dev = &spi->dev; + struct dma_chan *rx_dma; + int ret; + + st->offload_trigger = devm_spi_offload_trigger_get(dev, st->offload, + SPI_OFFLOAD_TRIGGER_PERIODIC); + if (IS_ERR(st->offload_trigger)) + return dev_err_probe(dev, PTR_ERR(st->offload_trigger), + "Failed to get offload trigger\n"); + + ret = ad4000_set_sampling_freq(st, st->max_rate_hz); + if (ret) + return dev_err_probe(dev, ret, + "Failed to set sampling frequency\n"); + + rx_dma = devm_spi_offload_rx_stream_request_dma_chan(dev, st->offload); + if (IS_ERR(rx_dma)) + return dev_err_probe(dev, PTR_ERR(rx_dma), + "Failed to get offload RX DMA\n"); + + ret = devm_iio_dmaengine_buffer_setup_with_handle(dev, indio_dev, rx_dma, + IIO_BUFFER_DIRECTION_IN); + if (ret) + return dev_err_probe(dev, ret, "Failed to setup DMA buffer\n"); + + return 0; +} + +/* + * This executes a data sample transfer when using SPI offloading. The device + * connections should be in "3-wire" mode, selected either when the adi,sdi-pin + * device tree property is absent or set to "high". Also, the ADC CNV pin must + * be connected to a SPI controller CS (it can't be connected to a GPIO). + * + * In order to achieve the maximum sample rate, we only do one transfer per + * SPI offload trigger. Because the ADC output has a one sample latency (delay) + * when the device is wired in "3-wire" mode and only one transfer per sample is + * being made in turbo mode, the first data sample is not valid because it + * contains the output of an earlier conversion result. We also set transfer + * `bits_per_word` to achieve higher throughput by using the minimum number of + * SCLK cycles. Also, a delay is added to make sure we meet the minimum quiet + * time before releasing the CS line. + * + * Note that, with `bits_per_word` set to the number of ADC precision bits, + * transfers use larger word sizes that get stored in 'in-memory wordsizes' that + * are always in native CPU byte order. Because of that, IIO buffer elements + * ought to be read in CPU endianness which requires setting IIO scan_type + * endianness accordingly (i.e. IIO_CPU). + */ +static int ad4000_prepare_offload_message(struct ad4000_state *st, + const struct iio_chan_spec *chan) +{ + struct spi_transfer *xfer = &st->offload_xfer; + + xfer->bits_per_word = chan->scan_type.realbits; + xfer->len = chan->scan_type.realbits > 16 ? 4 : 2; + xfer->delay.value = st->time_spec->t_quiet2_ns; + xfer->delay.unit = SPI_DELAY_UNIT_NSECS; + xfer->offload_flags = SPI_OFFLOAD_XFER_RX_STREAM; + + spi_message_init_with_transfers(&st->offload_msg, xfer, 1); + st->offload_msg.offload = st->offload; + + return devm_spi_optimize_message(&st->spi->dev, st->spi, &st->offload_msg); +} + /* * This executes a data sample transfer for when the device connections are * in "3-wire" mode, selected when the adi,sdi-pin device tree property is @@ -690,6 +942,15 @@ static int ad4000_prepare_3wire_mode_message(struct ad4000_state *st, xfers[1].rx_buf = &st->scan.data; xfers[1].len = BITS_TO_BYTES(chan->scan_type.storagebits); + + /* + * If the device is set up for SPI offloading, IIO channel scan_type is + * set to IIO_CPU. When that is the case, use larger SPI word sizes for + * single-shot reads too. Thus, sample data can be correctly handled in + * ad4000_single_conversion() according to scan_type endianness. + */ + if (chan->scan_type.endianness != IIO_BE) + xfers[1].bits_per_word = chan->scan_type.realbits; xfers[1].delay.value = st->time_spec->t_quiet2_ns; xfers[1].delay.unit = SPI_DELAY_UNIT_NSECS; @@ -733,6 +994,9 @@ static int ad4000_config(struct ad4000_state *st) if (device_property_present(&st->spi->dev, "adi,high-z-input")) reg_val |= FIELD_PREP(AD4000_CFG_HIGHZ, 1); + if (st->using_offload) + reg_val |= FIELD_PREP(AD4000_CFG_TURBO, 1); + return ad4000_write_reg(st, reg_val); } @@ -755,6 +1019,7 @@ static int ad4000_probe(struct spi_device *spi) st = iio_priv(indio_dev); st->spi = spi; st->time_spec = chip->time_spec; + st->max_rate_hz = chip->max_rate_hz; ret = devm_regulator_bulk_get_enable(dev, ARRAY_SIZE(ad4000_power_supplies), ad4000_power_supplies); @@ -772,6 +1037,26 @@ static int ad4000_probe(struct spi_device *spi) return dev_err_probe(dev, PTR_ERR(st->cnv_gpio), "Failed to get CNV GPIO"); + st->offload = devm_spi_offload_get(dev, spi, &ad4000_offload_config); + ret = PTR_ERR_OR_ZERO(st->offload); + if (ret && ret != -ENODEV) + return dev_err_probe(dev, ret, "Failed to get offload\n"); + + st->using_offload = !IS_ERR(st->offload); + if (st->using_offload) { + indio_dev->setup_ops = &ad4000_offload_buffer_setup_ops; + ret = ad4000_spi_offload_setup(indio_dev, st); + if (ret) + return ret; + } else { + ret = devm_iio_triggered_buffer_setup(dev, indio_dev, + &iio_pollfunc_store_time, + &ad4000_trigger_handler, + NULL); + if (ret) + return ret; + } + ret = device_property_match_property_string(dev, "adi,sdi-pin", ad4000_sdi_pin, ARRAY_SIZE(ad4000_sdi_pin)); @@ -784,7 +1069,6 @@ static int ad4000_probe(struct spi_device *spi) switch (st->sdi_pin) { case AD4000_SDI_MOSI: indio_dev->info = &ad4000_reg_access_info; - indio_dev->channels = chip->reg_access_chan_spec; /* * In "3-wire mode", the ADC SDI line must be kept high when @@ -796,9 +1080,26 @@ static int ad4000_probe(struct spi_device *spi) if (ret < 0) return ret; + if (st->using_offload) { + indio_dev->channels = &chip->reg_access_offload_chan_spec; + indio_dev->num_channels = 1; + ret = ad4000_prepare_offload_message(st, indio_dev->channels); + if (ret) + return dev_err_probe(dev, ret, + "Failed to optimize SPI msg\n"); + } else { + indio_dev->channels = chip->reg_access_chan_spec; + indio_dev->num_channels = ARRAY_SIZE(chip->reg_access_chan_spec); + } + + /* + * Call ad4000_prepare_3wire_mode_message() so single-shot read + * SPI messages are always initialized. + */ ret = ad4000_prepare_3wire_mode_message(st, &indio_dev->channels[0]); if (ret) - return ret; + return dev_err_probe(dev, ret, + "Failed to optimize SPI msg\n"); ret = ad4000_config(st); if (ret < 0) @@ -806,19 +1107,38 @@ static int ad4000_probe(struct spi_device *spi) break; case AD4000_SDI_VIO: - indio_dev->info = &ad4000_info; - indio_dev->channels = chip->chan_spec; + if (st->using_offload) { + indio_dev->info = &ad4000_offload_info; + indio_dev->channels = &chip->offload_chan_spec; + indio_dev->num_channels = 1; + + ret = ad4000_prepare_offload_message(st, indio_dev->channels); + if (ret) + return dev_err_probe(dev, ret, + "Failed to optimize SPI msg\n"); + } else { + indio_dev->info = &ad4000_info; + indio_dev->channels = chip->chan_spec; + indio_dev->num_channels = ARRAY_SIZE(chip->chan_spec); + } + ret = ad4000_prepare_3wire_mode_message(st, &indio_dev->channels[0]); if (ret) - return ret; + return dev_err_probe(dev, ret, + "Failed to optimize SPI msg\n"); break; case AD4000_SDI_CS: + if (st->using_offload) + return dev_err_probe(dev, -EPROTONOSUPPORT, + "Unsupported sdi-pin + offload config\n"); indio_dev->info = &ad4000_info; indio_dev->channels = chip->chan_spec; + indio_dev->num_channels = ARRAY_SIZE(chip->chan_spec); ret = ad4000_prepare_4wire_mode_message(st, &indio_dev->channels[0]); if (ret) - return ret; + return dev_err_probe(dev, ret, + "Failed to optimize SPI msg\n"); break; case AD4000_SDI_GND: @@ -830,7 +1150,6 @@ static int ad4000_probe(struct spi_device *spi) } indio_dev->name = chip->dev_name; - indio_dev->num_channels = 2; ret = devm_mutex_init(dev, &st->lock); if (ret) @@ -853,12 +1172,6 @@ static int ad4000_probe(struct spi_device *spi) ad4000_fill_scale_tbl(st, &indio_dev->channels[0]); - ret = devm_iio_triggered_buffer_setup(dev, indio_dev, - &iio_pollfunc_store_time, - &ad4000_trigger_handler, NULL); - if (ret) - return ret; - return devm_iio_device_register(dev, indio_dev); } @@ -947,3 +1260,4 @@ module_spi_driver(ad4000_driver); MODULE_AUTHOR("Marcelo Schmitt "); MODULE_DESCRIPTION("Analog Devices AD4000 ADC driver"); MODULE_LICENSE("GPL"); +MODULE_IMPORT_NS("IIO_DMAENGINE_BUFFER"); -- cgit v1.2.3 From 66ac231508335ac1098eb6b7b58f2bc92b67ef98 Mon Sep 17 00:00:00 2001 From: Marcelo Schmitt Date: Thu, 27 Mar 2025 18:24:53 -0300 Subject: Documentation: iio: ad4000: Add new supported parts Commit ("iio: adc: ad4000: Add support for PulSAR devices"), extended the ad4000 driver supports many single-channel PulSAR devices. Update IIO ad4000 documentation with the extra list of supported devices. Reviewed-by: David Lechner Signed-off-by: Marcelo Schmitt Link: https://patch.msgid.link/2b602abd0773af91e7ccd9dd7a2afe67f4792f95.1743110188.git.marcelo.schmitt@analog.com Signed-off-by: Jonathan Cameron --- Documentation/iio/ad4000.rst | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) diff --git a/Documentation/iio/ad4000.rst b/Documentation/iio/ad4000.rst index de8fd3ae6e62..5578a9cfd9d5 100644 --- a/Documentation/iio/ad4000.rst +++ b/Documentation/iio/ad4000.rst @@ -4,7 +4,7 @@ AD4000 driver ============= -Device driver for Analog Devices Inc. AD4000 series of ADCs. +Device driver for Analog Devices Inc. AD4000 series of ADCs and similar devices. Supported devices ================= @@ -25,6 +25,21 @@ Supported devices * `AD4022 `_ * `ADAQ4001 `_ * `ADAQ4003 `_ +* `AD7685 `_ +* `AD7686 `_ +* `AD7687 `_ +* `AD7688 `_ +* `AD7690 `_ +* `AD7691 `_ +* `AD7693 `_ +* `AD7942 `_ +* `AD7946 `_ +* `AD7980 `_ +* `AD7982 `_ +* `AD7983 `_ +* `AD7984 `_ +* `AD7988-1 `_ +* `AD7988-5 `_ Wiring connections ------------------ -- cgit v1.2.3 From d66b2c84fb675b6ac2ffe285bf447b18badf6e4b Mon Sep 17 00:00:00 2001 From: Marcelo Schmitt Date: Thu, 27 Mar 2025 18:25:12 -0300 Subject: Documentation: iio: ad4000: Add IIO Device characteristics section Complement ad4000 IIO driver documentation with considerations about ``_scale_available`` attribute and table of typical channel attributes. Reviewed-by: David Lechner Signed-off-by: Marcelo Schmitt Link: https://patch.msgid.link/6c8fe68d7d413ffdd33b154ba45600c7ce7013da.1743110188.git.marcelo.schmitt@analog.com Signed-off-by: Jonathan Cameron --- Documentation/iio/ad4000.rst | 47 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) diff --git a/Documentation/iio/ad4000.rst b/Documentation/iio/ad4000.rst index 5578a9cfd9d5..468d30dc9214 100644 --- a/Documentation/iio/ad4000.rst +++ b/Documentation/iio/ad4000.rst @@ -144,3 +144,50 @@ Set ``adi,sdi-pin`` to ``"cs"`` to select this mode. ^ | | +--------------------| SCLK | +-------------+ + +IIO Device characteristics +========================== + +The AD4000 series driver supports differential and pseudo-differential ADCs. + +The span compression feature available in AD4000 series devices can be +enabled/disabled by changing the ``_scale_available`` attribute of the voltage +channel. Note that span compression configuration requires writing to AD4000 +configuration register, which is only possible when the ADC is wired in 3-wire +turbo mode, and the SPI controller is ``SPI_MOSI_IDLE_HIGH`` capable. If those +conditions are not met, no ``_scale_available`` attribute is provided. + +Besides that, differential and pseudo-differential voltage channels present +slightly different sysfs interfaces. + +Pseudo-differential ADCs +------------------------ + +Typical voltage channel attributes of a pseudo-differential AD4000 series device: + ++-------------------------------------------+------------------------------------------+ +| Voltage Channel Attributes | Description | ++===========================================+==========================================+ +| ``in_voltage0_raw`` | Raw ADC output code. | ++-------------------------------------------+------------------------------------------+ +| ``in_voltage0_offset`` | Offset to convert raw value to mV. | ++-------------------------------------------+------------------------------------------+ +| ``in_voltage0_scale`` | Scale factor to convert raw value to mV. | ++-------------------------------------------+------------------------------------------+ +| ``in_voltage0_scale_available`` | Toggles input span compression | ++-------------------------------------------+------------------------------------------+ + +Differential ADCs +----------------- + +Typical voltage channel attributes of a differential AD4000 series device: + ++-------------------------------------------+------------------------------------------+ +| Voltage Channel Attributes | Description | ++===========================================+==========================================+ +| ``in_voltage0-voltage1_raw`` | Raw ADC output code. | ++-------------------------------------------+------------------------------------------+ +| ``in_voltage0-voltage1_scale`` | Scale factor to convert raw value to mV. | ++-------------------------------------------+------------------------------------------+ +| ``in_voltage0-voltage1_scale_available`` | Toggles input span compression | ++-------------------------------------------+------------------------------------------+ -- cgit v1.2.3 From 8c411d4b96554972edc3b571cbef2d59fa0d907f Mon Sep 17 00:00:00 2001 From: Marcelo Schmitt Date: Thu, 27 Mar 2025 18:25:29 -0300 Subject: Documentation: iio: ad4000: Describe offload support When SPI offloading is supported, the IIO device provides different sysfs interfaces to allow using the adjusting the sample rate. Document SPI offload support for AD4000 and similar devices. Reviewed-by: David Lechner Signed-off-by: Marcelo Schmitt Link: https://patch.msgid.link/eb94013b1a4d66a8492cf094aef3e4410f81d22b.1743110188.git.marcelo.schmitt@analog.com Signed-off-by: Jonathan Cameron --- Documentation/iio/ad4000.rst | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/Documentation/iio/ad4000.rst b/Documentation/iio/ad4000.rst index 468d30dc9214..c1d04d3436d2 100644 --- a/Documentation/iio/ad4000.rst +++ b/Documentation/iio/ad4000.rst @@ -191,3 +191,30 @@ Typical voltage channel attributes of a differential AD4000 series device: +-------------------------------------------+------------------------------------------+ | ``in_voltage0-voltage1_scale_available`` | Toggles input span compression | +-------------------------------------------+------------------------------------------+ + +SPI offload support +------------------- + +To be able to achieve the maximum sample rate, the driver can be used with SPI +offload engines such as the one usually present in `AXI SPI Engine`_, to provide +SPI offload support. + +.. _AXI SPI Engine: http://analogdevicesinc.github.io/hdl/projects/pulsar_adc/index.html + +To keep up with SPI offloading transfer speeds, the ADC must be connected either +in 3-wire turbo mode or in 3-wire without busy indicator mode and have SPI +controller CS line connected to the CNV pin. + +When set for SPI offload support, the IIO device will provide different +interfaces. + +* Either ``in_voltage0_sampling_frequency`` or + ``in_voltage0-voltage1_sampling_frequency`` file is provided to allow setting + the sample rate. +* IIO trigger device is not provided (no ``trigger`` directory). +* ``timestamp`` channel is not provided. + +Also, because the ADC output has a one sample latency (delay) when the device is +wired in "3-wire" mode and only one transfer per sample is done when using SPI +offloading, the first data sample in the buffer is not valid because it contains +the output of an earlier conversion result. -- cgit v1.2.3 From 8712e4986e7ce42a14c762c4c350f290989986a5 Mon Sep 17 00:00:00 2001 From: Uwe Kleine-König Date: Mon, 17 Mar 2025 12:52:47 +0100 Subject: iio: adc: ad7124: Fix 3dB filter frequency reading MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The sinc4 filter has a factor 0.23 between Output Data Rate and f_{3dB} and for sinc3 the factor is 0.272 according to the data sheets for ad7124-4 (Rev. E.) and ad7124-8 (Rev. F). Fixes: cef2760954cf ("iio: adc: ad7124: add 3db filter") Signed-off-by: Uwe Kleine-König Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250317115247.3735016-6-u.kleine-koenig@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7124.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/iio/adc/ad7124.c b/drivers/iio/adc/ad7124.c index 3ea81a98e455..7d5d84a07cae 100644 --- a/drivers/iio/adc/ad7124.c +++ b/drivers/iio/adc/ad7124.c @@ -301,9 +301,9 @@ static int ad7124_get_3db_filter_freq(struct ad7124_state *st, switch (st->channels[channel].cfg.filter_type) { case AD7124_SINC3_FILTER: - return DIV_ROUND_CLOSEST(fadc * 230, 1000); + return DIV_ROUND_CLOSEST(fadc * 272, 1000); case AD7124_SINC4_FILTER: - return DIV_ROUND_CLOSEST(fadc * 262, 1000); + return DIV_ROUND_CLOSEST(fadc * 230, 1000); default: return -EINVAL; } -- cgit v1.2.3 From 7dd17a4e98735b112e25860b3767901799ea0d61 Mon Sep 17 00:00:00 2001 From: Uwe Kleine-König Date: Mon, 17 Mar 2025 12:52:48 +0100 Subject: iio: adc: ad7124: Remove ability to write filter_low_pass_3db_frequency MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit There are several issues with the function that implements writing to the filter_low_pass_3db_frequency property: - The sinc3 factor should be 0.272 not 0.262 (this is fixed for the reading side in the previous patch). - For freq > 1 the if condition is always true so the sinc4 filter is hardly ever chosen. - In the nearly always taken if branch the filter is set to sinc3, but the frequency is set for sinc4. (And vice versa in the else branch.) This is broken enough to justify the claim that there isn't any serious user. Also it it counter-intuitive that setting the 3db frequency modifies the sample frequency and the filter type. So drop the ability to write that property. Signed-off-by: Uwe Kleine-König Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250317115247.3735016-7-u.kleine-koenig@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7124.c | 36 +----------------------------------- 1 file changed, 1 insertion(+), 35 deletions(-) diff --git a/drivers/iio/adc/ad7124.c b/drivers/iio/adc/ad7124.c index 7d5d84a07cae..662a3eb2f90e 100644 --- a/drivers/iio/adc/ad7124.c +++ b/drivers/iio/adc/ad7124.c @@ -309,32 +309,6 @@ static int ad7124_get_3db_filter_freq(struct ad7124_state *st, } } -static void ad7124_set_3db_filter_freq(struct ad7124_state *st, unsigned int channel, - unsigned int freq) -{ - unsigned int sinc4_3db_odr; - unsigned int sinc3_3db_odr; - unsigned int new_filter; - unsigned int new_odr; - - sinc4_3db_odr = DIV_ROUND_CLOSEST(freq * 1000, 230); - sinc3_3db_odr = DIV_ROUND_CLOSEST(freq * 1000, 262); - - if (sinc4_3db_odr > sinc3_3db_odr) { - new_filter = AD7124_SINC3_FILTER; - new_odr = sinc4_3db_odr; - } else { - new_filter = AD7124_SINC4_FILTER; - new_odr = sinc3_3db_odr; - } - - if (new_odr != st->channels[channel].cfg.odr) - st->channels[channel].cfg.live = false; - - st->channels[channel].cfg.filter_type = new_filter; - st->channels[channel].cfg.odr = new_odr; -} - static struct ad7124_channel_config *ad7124_find_similar_live_cfg(struct ad7124_state *st, struct ad7124_channel_config *cfg) { @@ -739,16 +713,8 @@ static int ad7124_write_raw(struct iio_dev *indio_dev, st->channels[chan->address].cfg.pga_bits = res; break; - case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY: - if (val2 != 0) { - ret = -EINVAL; - break; - } - - ad7124_set_3db_filter_freq(st, chan->address, val); - break; default: - ret = -EINVAL; + ret = -EINVAL; } mutex_unlock(&st->cfgs_lock); -- cgit v1.2.3 From 7df3a6eb5c396366c8de5687a2c9dde42dcd66d7 Mon Sep 17 00:00:00 2001 From: Uwe Kleine-König Date: Mon, 17 Mar 2025 12:52:49 +0100 Subject: iio: adc: ad7124: Make register naming consistent MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Cleanup definition of register related constants: - Use the register and field names exactly as documented in the data sheet. - Consistently use _ to name a register's bitfield. - Drop _MSK definitions and implicit FIELD_PREP calls. - Consistent indentation. Signed-off-by: Uwe Kleine-König Link: https://patch.msgid.link/20250317115247.3735016-8-u.kleine-koenig@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7124.c | 172 +++++++++++++++++++++++------------------------ 1 file changed, 83 insertions(+), 89 deletions(-) diff --git a/drivers/iio/adc/ad7124.c b/drivers/iio/adc/ad7124.c index 662a3eb2f90e..92596f15e797 100644 --- a/drivers/iio/adc/ad7124.c +++ b/drivers/iio/adc/ad7124.c @@ -32,7 +32,7 @@ #define AD7124_IO_CONTROL_2 0x04 #define AD7124_ID 0x05 #define AD7124_ERROR 0x06 -#define AD7124_ERROR_EN 0x07 +#define AD7124_ERROR_EN 0x07 #define AD7124_MCLK_COUNT 0x08 #define AD7124_CHANNEL(x) (0x09 + (x)) #define AD7124_CONFIG(x) (0x19 + (x)) @@ -41,68 +41,58 @@ #define AD7124_GAIN(x) (0x31 + (x)) /* AD7124_STATUS */ -#define AD7124_STATUS_POR_FLAG_MSK BIT(4) +#define AD7124_STATUS_POR_FLAG BIT(4) /* AD7124_ADC_CONTROL */ -#define AD7124_ADC_STATUS_EN_MSK BIT(10) -#define AD7124_ADC_STATUS_EN(x) FIELD_PREP(AD7124_ADC_STATUS_EN_MSK, x) -#define AD7124_ADC_CTRL_REF_EN_MSK BIT(8) -#define AD7124_ADC_CTRL_REF_EN(x) FIELD_PREP(AD7124_ADC_CTRL_REF_EN_MSK, x) -#define AD7124_ADC_CTRL_PWR_MSK GENMASK(7, 6) -#define AD7124_ADC_CTRL_PWR(x) FIELD_PREP(AD7124_ADC_CTRL_PWR_MSK, x) -#define AD7124_ADC_CTRL_MODE_MSK GENMASK(5, 2) -#define AD7124_ADC_CTRL_MODE(x) FIELD_PREP(AD7124_ADC_CTRL_MODE_MSK, x) - -#define AD7124_MODE_CAL_INT_ZERO 0x5 /* Internal Zero-Scale Calibration */ -#define AD7124_MODE_CAL_INT_FULL 0x6 /* Internal Full-Scale Calibration */ -#define AD7124_MODE_CAL_SYS_ZERO 0x7 /* System Zero-Scale Calibration */ -#define AD7124_MODE_CAL_SYS_FULL 0x8 /* System Full-Scale Calibration */ - -/* AD7124 ID */ -#define AD7124_DEVICE_ID_MSK GENMASK(7, 4) -#define AD7124_DEVICE_ID_GET(x) FIELD_GET(AD7124_DEVICE_ID_MSK, x) -#define AD7124_SILICON_REV_MSK GENMASK(3, 0) -#define AD7124_SILICON_REV_GET(x) FIELD_GET(AD7124_SILICON_REV_MSK, x) - -#define CHIPID_AD7124_4 0x0 -#define CHIPID_AD7124_8 0x1 +#define AD7124_ADC_CONTROL_MODE GENMASK(5, 2) +#define AD7124_ADC_CONTROL_MODE_CONTINUOUS 0 +#define AD7124_ADC_CONTROL_MODE_SINGLE 1 +#define AD7124_ADC_CONTROL_MODE_STANDBY 2 +#define AD7124_ADC_CONTROL_MODE_POWERDOWN 3 +#define AD7124_ADC_CONTROL_MODE_IDLE 4 +#define AD7124_ADC_CONTROL_MODE_INT_OFFSET_CALIB 5 /* Internal Zero-Scale Calibration */ +#define AD7124_ADC_CONTROL_MODE_INT_GAIN_CALIB 6 /* Internal Full-Scale Calibration */ +#define AD7124_ADC_CONTROL_MODE_SYS_OFFSET_CALIB 7 /* System Zero-Scale Calibration */ +#define AD7124_ADC_CONTROL_MODE_SYS_GAIN_CALIB 8 /* System Full-Scale Calibration */ +#define AD7124_ADC_CONTROL_POWER_MODE GENMASK(7, 6) +#define AD7124_ADC_CONTROL_POWER_MODE_LOW 0 +#define AD7124_ADC_CONTROL_POWER_MODE_MID 1 +#define AD7124_ADC_CONTROL_POWER_MODE_FULL 2 +#define AD7124_ADC_CONTROL_REF_EN BIT(8) +#define AD7124_ADC_CONTROL_DATA_STATUS BIT(10) + +/* AD7124_ID */ +#define AD7124_ID_SILICON_REVISION GENMASK(3, 0) +#define AD7124_ID_DEVICE_ID GENMASK(7, 4) +#define AD7124_ID_DEVICE_ID_AD7124_4 0x0 +#define AD7124_ID_DEVICE_ID_AD7124_8 0x1 /* AD7124_CHANNEL_X */ -#define AD7124_CHANNEL_EN_MSK BIT(15) -#define AD7124_CHANNEL_EN(x) FIELD_PREP(AD7124_CHANNEL_EN_MSK, x) -#define AD7124_CHANNEL_SETUP_MSK GENMASK(14, 12) -#define AD7124_CHANNEL_SETUP(x) FIELD_PREP(AD7124_CHANNEL_SETUP_MSK, x) -#define AD7124_CHANNEL_AINP_MSK GENMASK(9, 5) -#define AD7124_CHANNEL_AINP(x) FIELD_PREP(AD7124_CHANNEL_AINP_MSK, x) -#define AD7124_CHANNEL_AINM_MSK GENMASK(4, 0) -#define AD7124_CHANNEL_AINM(x) FIELD_PREP(AD7124_CHANNEL_AINM_MSK, x) +#define AD7124_CHANNEL_ENABLE BIT(15) +#define AD7124_CHANNEL_SETUP GENMASK(14, 12) +#define AD7124_CHANNEL_AINP GENMASK(9, 5) +#define AD7124_CHANNEL_AINM GENMASK(4, 0) +#define AD7124_CHANNEL_AINx_TEMPSENSOR 16 +#define AD7124_CHANNEL_AINx_AVSS 17 /* AD7124_CONFIG_X */ -#define AD7124_CONFIG_BIPOLAR_MSK BIT(11) -#define AD7124_CONFIG_BIPOLAR(x) FIELD_PREP(AD7124_CONFIG_BIPOLAR_MSK, x) -#define AD7124_CONFIG_REF_SEL_MSK GENMASK(4, 3) -#define AD7124_CONFIG_REF_SEL(x) FIELD_PREP(AD7124_CONFIG_REF_SEL_MSK, x) -#define AD7124_CONFIG_PGA_MSK GENMASK(2, 0) -#define AD7124_CONFIG_PGA(x) FIELD_PREP(AD7124_CONFIG_PGA_MSK, x) -#define AD7124_CONFIG_IN_BUFF_MSK GENMASK(6, 5) -#define AD7124_CONFIG_IN_BUFF(x) FIELD_PREP(AD7124_CONFIG_IN_BUFF_MSK, x) +#define AD7124_CONFIG_BIPOLAR BIT(11) +#define AD7124_CONFIG_IN_BUFF GENMASK(6, 5) +#define AD7124_CONFIG_AIN_BUFP BIT(6) +#define AD7124_CONFIG_AIN_BUFM BIT(5) +#define AD7124_CONFIG_REF_SEL GENMASK(4, 3) +#define AD7124_CONFIG_PGA GENMASK(2, 0) /* AD7124_FILTER_X */ -#define AD7124_FILTER_FS_MSK GENMASK(10, 0) -#define AD7124_FILTER_FS(x) FIELD_PREP(AD7124_FILTER_FS_MSK, x) -#define AD7124_FILTER_TYPE_MSK GENMASK(23, 21) -#define AD7124_FILTER_TYPE_SEL(x) FIELD_PREP(AD7124_FILTER_TYPE_MSK, x) +#define AD7124_FILTER_FS GENMASK(10, 0) +#define AD7124_FILTER_FILTER GENMASK(23, 21) +#define AD7124_FILTER_FILTER_SINC4 0 +#define AD7124_FILTER_FILTER_SINC3 2 -#define AD7124_SINC3_FILTER 2 -#define AD7124_SINC4_FILTER 0 - -#define AD7124_CONF_ADDR_OFFSET 20 #define AD7124_MAX_CONFIGS 8 #define AD7124_MAX_CHANNELS 16 /* AD7124 input sources */ -#define AD7124_INPUT_TEMPSENSOR 16 -#define AD7124_INPUT_AVSS 17 enum ad7124_ids { ID_AD7124_4, @@ -206,12 +196,12 @@ struct ad7124_state { static struct ad7124_chip_info ad7124_chip_info_tbl[] = { [ID_AD7124_4] = { .name = "ad7124-4", - .chip_id = CHIPID_AD7124_4, + .chip_id = AD7124_ID_DEVICE_ID_AD7124_4, .num_inputs = 8, }, [ID_AD7124_8] = { .name = "ad7124-8", - .chip_id = CHIPID_AD7124_8, + .chip_id = AD7124_ID_DEVICE_ID_AD7124_8, .num_inputs = 16, }, }; @@ -260,8 +250,8 @@ static int ad7124_set_mode(struct ad_sigma_delta *sd, { struct ad7124_state *st = container_of(sd, struct ad7124_state, sd); - st->adc_control &= ~AD7124_ADC_CTRL_MODE_MSK; - st->adc_control |= AD7124_ADC_CTRL_MODE(mode); + st->adc_control &= ~AD7124_ADC_CONTROL_MODE; + st->adc_control |= FIELD_PREP(AD7124_ADC_CONTROL_MODE, mode); return ad_sd_write_reg(&st->sd, AD7124_ADC_CONTROL, 2, st->adc_control); } @@ -300,9 +290,9 @@ static int ad7124_get_3db_filter_freq(struct ad7124_state *st, fadc = st->channels[channel].cfg.odr; switch (st->channels[channel].cfg.filter_type) { - case AD7124_SINC3_FILTER: + case AD7124_FILTER_FILTER_SINC3: return DIV_ROUND_CLOSEST(fadc * 272, 1000); - case AD7124_SINC4_FILTER: + case AD7124_FILTER_FILTER_SINC4: return DIV_ROUND_CLOSEST(fadc * 230, 1000); default: return -EINVAL; @@ -387,8 +377,7 @@ static int ad7124_init_config_vref(struct ad7124_state *st, struct ad7124_channe return 0; case AD7124_INT_REF: cfg->vref_mv = 2500; - st->adc_control &= ~AD7124_ADC_CTRL_REF_EN_MSK; - st->adc_control |= AD7124_ADC_CTRL_REF_EN(1); + st->adc_control |= AD7124_ADC_CONTROL_REF_EN; return 0; default: return dev_err_probe(dev, -EINVAL, "Invalid reference %d\n", refsel); @@ -412,18 +401,20 @@ static int ad7124_write_config(struct ad7124_state *st, struct ad7124_channel_co if (ret) return ret; - tmp = (cfg->buf_positive << 1) + cfg->buf_negative; - val = AD7124_CONFIG_BIPOLAR(cfg->bipolar) | AD7124_CONFIG_REF_SEL(cfg->refsel) | - AD7124_CONFIG_IN_BUFF(tmp) | AD7124_CONFIG_PGA(cfg->pga_bits); + val = FIELD_PREP(AD7124_CONFIG_BIPOLAR, cfg->bipolar) | + FIELD_PREP(AD7124_CONFIG_REF_SEL, cfg->refsel) | + (cfg->buf_positive ? AD7124_CONFIG_AIN_BUFP : 0) | + (cfg->buf_negative ? AD7124_CONFIG_AIN_BUFM : 0) | + FIELD_PREP(AD7124_CONFIG_PGA, cfg->pga_bits); ret = ad_sd_write_reg(&st->sd, AD7124_CONFIG(cfg->cfg_slot), 2, val); if (ret < 0) return ret; - tmp = AD7124_FILTER_TYPE_SEL(cfg->filter_type) | - AD7124_FILTER_FS(cfg->odr_sel_bits); + tmp = FIELD_PREP(AD7124_FILTER_FILTER, cfg->filter_type) | + FIELD_PREP(AD7124_FILTER_FS, cfg->odr_sel_bits); return ad7124_spi_write_mask(st, AD7124_FILTER(cfg->cfg_slot), - AD7124_FILTER_TYPE_MSK | AD7124_FILTER_FS_MSK, + AD7124_FILTER_FILTER | AD7124_FILTER_FS, tmp, 3); } @@ -488,7 +479,8 @@ static int ad7124_enable_channel(struct ad7124_state *st, struct ad7124_channel { ch->cfg.live = true; return ad_sd_write_reg(&st->sd, AD7124_CHANNEL(ch->nr), 2, ch->ain | - AD7124_CHANNEL_SETUP(ch->cfg.cfg_slot) | AD7124_CHANNEL_EN(1)); + FIELD_PREP(AD7124_CHANNEL_SETUP, ch->cfg.cfg_slot) | + AD7124_CHANNEL_ENABLE); } static int ad7124_prepare_read(struct ad7124_state *st, int address) @@ -538,8 +530,10 @@ static int ad7124_append_status(struct ad_sigma_delta *sd, bool append) unsigned int adc_control = st->adc_control; int ret; - adc_control &= ~AD7124_ADC_STATUS_EN_MSK; - adc_control |= AD7124_ADC_STATUS_EN(append); + if (append) + adc_control |= AD7124_ADC_CONTROL_DATA_STATUS; + else + adc_control &= ~AD7124_ADC_CONTROL_DATA_STATUS; ret = ad_sd_write_reg(&st->sd, AD7124_ADC_CONTROL, 2, adc_control); if (ret < 0) @@ -554,7 +548,7 @@ static int ad7124_disable_one(struct ad_sigma_delta *sd, unsigned int chan) { struct ad7124_state *st = container_of(sd, struct ad7124_state, sd); - /* The relevant thing here is that AD7124_CHANNEL_EN_MSK is cleared. */ + /* The relevant thing here is that AD7124_CHANNEL_ENABLE is cleared. */ return ad_sd_write_reg(&st->sd, AD7124_CHANNEL(chan), 2, 0); } @@ -768,7 +762,7 @@ static int ad7124_update_scan_mode(struct iio_dev *indio_dev, if (bit_set) ret = __ad7124_set_channel(&st->sd, i); else - ret = ad7124_spi_write_mask(st, AD7124_CHANNEL(i), AD7124_CHANNEL_EN_MSK, + ret = ad7124_spi_write_mask(st, AD7124_CHANNEL(i), AD7124_CHANNEL_ENABLE, 0, 2); if (ret < 0) { mutex_unlock(&st->cfgs_lock); @@ -809,14 +803,14 @@ static int ad7124_soft_reset(struct ad7124_state *st) if (ret < 0) return dev_err_probe(dev, ret, "Error reading status register\n"); - if (!(readval & AD7124_STATUS_POR_FLAG_MSK)) + if (!(readval & AD7124_STATUS_POR_FLAG)) break; /* The AD7124 requires typically 2ms to power up and settle */ usleep_range(100, 2000); } while (--timeout); - if (readval & AD7124_STATUS_POR_FLAG_MSK) + if (readval & AD7124_STATUS_POR_FLAG) return dev_err_probe(dev, -EIO, "Soft reset failed\n"); ret = ad_sd_read_reg(&st->sd, AD7124_GAIN(0), 3, &st->gain_default); @@ -838,8 +832,8 @@ static int ad7124_check_chip_id(struct ad7124_state *st) if (ret < 0) return dev_err_probe(dev, ret, "Failure to read ID register\n"); - chip_id = AD7124_DEVICE_ID_GET(readval); - silicon_rev = AD7124_SILICON_REV_GET(readval); + chip_id = FIELD_GET(AD7124_ID_DEVICE_ID, readval); + silicon_rev = FIELD_GET(AD7124_ID_SILICON_REVISION, readval); if (chip_id != st->chip_info->chip_id) return dev_err_probe(dev, -ENODEV, @@ -867,7 +861,7 @@ static int ad7124_syscalib_locked(struct ad7124_state *st, const struct iio_chan if (ch->syscalib_mode == AD7124_SYSCALIB_ZERO_SCALE) { ch->cfg.calibration_offset = 0x800000; - ret = ad_sd_calibrate(&st->sd, AD7124_MODE_CAL_SYS_ZERO, + ret = ad_sd_calibrate(&st->sd, AD7124_ADC_CONTROL_MODE_SYS_OFFSET_CALIB, chan->address); if (ret < 0) return ret; @@ -882,7 +876,7 @@ static int ad7124_syscalib_locked(struct ad7124_state *st, const struct iio_chan } else { ch->cfg.calibration_gain = st->gain_default; - ret = ad_sd_calibrate(&st->sd, AD7124_MODE_CAL_SYS_FULL, + ret = ad_sd_calibrate(&st->sd, AD7124_ADC_CONTROL_MODE_SYS_GAIN_CALIB, chan->address); if (ret < 0) return ret; @@ -997,7 +991,7 @@ static bool ad7124_valid_input_select(unsigned int ain, const struct ad7124_chip if (ain >= info->num_inputs && ain < 16) return false; - return ain <= FIELD_MAX(AD7124_CHANNEL_AINM_MSK); + return ain <= FIELD_MAX(AD7124_CHANNEL_AINM); } static int ad7124_parse_channel_config(struct iio_dev *indio_dev, @@ -1062,8 +1056,8 @@ static int ad7124_parse_channel_config(struct iio_dev *indio_dev, "diff-channels property of %pfwP contains invalid data\n", child); st->channels[channel].nr = channel; - st->channels[channel].ain = AD7124_CHANNEL_AINP(ain[0]) | - AD7124_CHANNEL_AINM(ain[1]); + st->channels[channel].ain = FIELD_PREP(AD7124_CHANNEL_AINP, ain[0]) | + FIELD_PREP(AD7124_CHANNEL_AINM, ain[1]); cfg = &st->channels[channel].cfg; cfg->bipolar = fwnode_property_read_bool(child, "bipolar"); @@ -1089,8 +1083,8 @@ static int ad7124_parse_channel_config(struct iio_dev *indio_dev, if (num_channels < AD7124_MAX_CHANNELS) { st->channels[num_channels] = (struct ad7124_channel) { .nr = num_channels, - .ain = AD7124_CHANNEL_AINP(AD7124_INPUT_TEMPSENSOR) | - AD7124_CHANNEL_AINM(AD7124_INPUT_AVSS), + .ain = FIELD_PREP(AD7124_CHANNEL_AINP, AD7124_CHANNEL_AINx_TEMPSENSOR) | + FIELD_PREP(AD7124_CHANNEL_AINM, AD7124_CHANNEL_AINx_AVSS), .cfg = { .bipolar = true, }, @@ -1141,11 +1135,11 @@ static int ad7124_setup(struct ad7124_state *st) } /* Set the power mode */ - st->adc_control &= ~AD7124_ADC_CTRL_PWR_MSK; - st->adc_control |= AD7124_ADC_CTRL_PWR(power_mode); + st->adc_control &= ~AD7124_ADC_CONTROL_POWER_MODE; + st->adc_control |= FIELD_PREP(AD7124_ADC_CONTROL_POWER_MODE, power_mode); - st->adc_control &= ~AD7124_ADC_CTRL_MODE_MSK; - st->adc_control |= AD7124_ADC_CTRL_MODE(AD_SD_MODE_IDLE); + st->adc_control &= ~AD7124_ADC_CONTROL_MODE; + st->adc_control |= FIELD_PREP(AD7124_ADC_CONTROL_MODE, AD_SD_MODE_IDLE); mutex_init(&st->cfgs_lock); INIT_KFIFO(st->live_cfgs_fifo); @@ -1199,7 +1193,7 @@ static int __ad7124_calibrate_all(struct ad7124_state *st, struct iio_dev *indio * usual: first zero-scale then full-scale calibration. */ if (st->channels[i].cfg.pga_bits > 0) { - ret = ad_sd_calibrate(&st->sd, AD7124_MODE_CAL_INT_FULL, i); + ret = ad_sd_calibrate(&st->sd, AD7124_ADC_CONTROL_MODE_INT_GAIN_CALIB, i); if (ret < 0) return ret; @@ -1216,7 +1210,7 @@ static int __ad7124_calibrate_all(struct ad7124_state *st, struct iio_dev *indio return ret; } - ret = ad_sd_calibrate(&st->sd, AD7124_MODE_CAL_INT_ZERO, i); + ret = ad_sd_calibrate(&st->sd, AD7124_ADC_CONTROL_MODE_INT_OFFSET_CALIB, i); if (ret < 0) return ret; @@ -1245,9 +1239,9 @@ static int ad7124_calibrate_all(struct ad7124_state *st, struct iio_dev *indio_d * The resulting calibration is then also valid for high-speed, so just * restore adc_control afterwards. */ - if (FIELD_GET(AD7124_ADC_CTRL_PWR_MSK, adc_control) >= AD7124_FULL_POWER) { - st->adc_control &= ~AD7124_ADC_CTRL_PWR_MSK; - st->adc_control |= AD7124_ADC_CTRL_PWR(AD7124_MID_POWER); + if (FIELD_GET(AD7124_ADC_CONTROL_POWER_MODE, adc_control) >= AD7124_FULL_POWER) { + st->adc_control &= ~AD7124_ADC_CONTROL_POWER_MODE; + st->adc_control |= FIELD_PREP(AD7124_ADC_CONTROL_POWER_MODE, AD7124_MID_POWER); } ret = __ad7124_calibrate_all(st, indio_dev); -- cgit v1.2.3 From 36ee4794dd791e69f9402d5dc4a52968af36a936 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 31 Mar 2025 13:12:41 +0100 Subject: iio: addac: ad74115: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Cc: Cosmin Tanislav Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250331121317.1694135-2-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/addac/ad74115.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/iio/addac/ad74115.c b/drivers/iio/addac/ad74115.c index a7e480f2472d..edccdc9cf34b 100644 --- a/drivers/iio/addac/ad74115.c +++ b/drivers/iio/addac/ad74115.c @@ -866,15 +866,14 @@ static int ad74115_get_adc_code(struct iio_dev *indio_dev, struct ad74115_state *st = iio_priv(indio_dev); int ret; - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; mutex_lock(&st->lock); ret = _ad74115_get_adc_code(st, channel, val); mutex_unlock(&st->lock); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); return ret; } -- cgit v1.2.3 From fef6da136ef2835f18995a45f7b48847cff17b35 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 31 Mar 2025 13:12:42 +0100 Subject: iio: chemical: ccs811: Factor out handling of read of IIO_INFO_RAW to simplify error paths. Factor out the implementation of this part of read_raw() and use guard() to allow direct returns, simplifying both error and non error paths. Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250331121317.1694135-3-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/chemical/ccs811.c | 72 ++++++++++++++++++++++--------------------- 1 file changed, 37 insertions(+), 35 deletions(-) diff --git a/drivers/iio/chemical/ccs811.c b/drivers/iio/chemical/ccs811.c index 451fb65dbe60..75b0cb05dd86 100644 --- a/drivers/iio/chemical/ccs811.c +++ b/drivers/iio/chemical/ccs811.c @@ -15,6 +15,7 @@ * 4. Read error register and put the information in logs */ +#include #include #include #include @@ -214,6 +215,40 @@ static int ccs811_get_measurement(struct ccs811_data *data) return ret; } +static int ccs811_read_info_raw(struct ccs811_data *data, + struct iio_chan_spec const *chan, + int *val, int mask) +{ + int ret; + + guard(mutex)(&data->lock); + ret = ccs811_get_measurement(data); + if (ret < 0) + return ret; + + switch (chan->type) { + case IIO_VOLTAGE: + *val = be16_to_cpu(data->buffer.raw_data) & CCS811_VOLTAGE_MASK; + return IIO_VAL_INT; + case IIO_CURRENT: + *val = be16_to_cpu(data->buffer.raw_data) >> 10; + return IIO_VAL_INT; + case IIO_CONCENTRATION: + switch (chan->channel2) { + case IIO_MOD_CO2: + *val = be16_to_cpu(data->buffer.co2); + return IIO_VAL_INT; + case IIO_MOD_VOC: + *val = be16_to_cpu(data->buffer.voc); + return IIO_VAL_INT; + default: + return -EINVAL; + } + default: + return -EINVAL; + } +} + static int ccs811_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long mask) @@ -226,42 +261,9 @@ static int ccs811_read_raw(struct iio_dev *indio_dev, ret = iio_device_claim_direct_mode(indio_dev); if (ret) return ret; - mutex_lock(&data->lock); - ret = ccs811_get_measurement(data); - if (ret < 0) { - mutex_unlock(&data->lock); - iio_device_release_direct_mode(indio_dev); - return ret; - } - switch (chan->type) { - case IIO_VOLTAGE: - *val = be16_to_cpu(data->buffer.raw_data) & - CCS811_VOLTAGE_MASK; - ret = IIO_VAL_INT; - break; - case IIO_CURRENT: - *val = be16_to_cpu(data->buffer.raw_data) >> 10; - ret = IIO_VAL_INT; - break; - case IIO_CONCENTRATION: - switch (chan->channel2) { - case IIO_MOD_CO2: - *val = be16_to_cpu(data->buffer.co2); - ret = IIO_VAL_INT; - break; - case IIO_MOD_VOC: - *val = be16_to_cpu(data->buffer.voc); - ret = IIO_VAL_INT; - break; - default: - ret = -EINVAL; - } - break; - default: - ret = -EINVAL; - } - mutex_unlock(&data->lock); + ret = ccs811_read_info_raw(data, chan, val, mask); + iio_device_release_direct_mode(indio_dev); return ret; -- cgit v1.2.3 From e9786c540804c354cd503864208f6ca54fea73b8 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 31 Mar 2025 13:12:43 +0100 Subject: iio: chemical: ccs811: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250331121317.1694135-4-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/chemical/ccs811.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/iio/chemical/ccs811.c b/drivers/iio/chemical/ccs811.c index 75b0cb05dd86..1eab256a1e00 100644 --- a/drivers/iio/chemical/ccs811.c +++ b/drivers/iio/chemical/ccs811.c @@ -258,13 +258,12 @@ static int ccs811_read_raw(struct iio_dev *indio_dev, switch (mask) { case IIO_CHAN_INFO_RAW: - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; ret = ccs811_read_info_raw(data, chan, val, mask); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); return ret; -- cgit v1.2.3 From 3976dc8323408f2b10d03f271d1f1b8f6eacd41b Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 31 Mar 2025 13:12:44 +0100 Subject: iio: chemical: atlas-sensor: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250331121317.1694135-5-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/chemical/atlas-sensor.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/iio/chemical/atlas-sensor.c b/drivers/iio/chemical/atlas-sensor.c index baf93e5e3ca7..593b73ccbeb7 100644 --- a/drivers/iio/chemical/atlas-sensor.c +++ b/drivers/iio/chemical/atlas-sensor.c @@ -518,13 +518,12 @@ static int atlas_read_raw(struct iio_dev *indio_dev, case IIO_CONCENTRATION: case IIO_ELECTRICALCONDUCTIVITY: case IIO_VOLTAGE: - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; ret = atlas_read_measurement(data, chan->address, ®); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); break; default: ret = -EINVAL; -- cgit v1.2.3 From ba22e78635f9610276ef60d8361c3b1337cbff57 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 31 Mar 2025 13:12:45 +0100 Subject: iio: chemical: scd4x: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Cc: Roan van Dijk Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250331121317.1694135-6-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/chemical/scd4x.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/iio/chemical/scd4x.c b/drivers/iio/chemical/scd4x.c index 50e3ac44422b..4877bd3e907b 100644 --- a/drivers/iio/chemical/scd4x.c +++ b/drivers/iio/chemical/scd4x.c @@ -358,15 +358,14 @@ static int scd4x_read_raw(struct iio_dev *indio_dev, return IIO_VAL_INT; } - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; mutex_lock(&state->lock); ret = scd4x_read_channel(state, chan->address); mutex_unlock(&state->lock); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); if (ret < 0) return ret; -- cgit v1.2.3 From 0ceb75d0afae08ea917bbd0c195403549151c05b Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 31 Mar 2025 13:12:46 +0100 Subject: iio: common: scmi: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Cc: Jyoti Bhayana Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250331121317.1694135-7-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/common/scmi_sensors/scmi_iio.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/iio/common/scmi_sensors/scmi_iio.c b/drivers/iio/common/scmi_sensors/scmi_iio.c index ed15dcbf4cf6..1a62dd902f05 100644 --- a/drivers/iio/common/scmi_sensors/scmi_iio.c +++ b/drivers/iio/common/scmi_sensors/scmi_iio.c @@ -351,12 +351,11 @@ static int scmi_iio_read_raw(struct iio_dev *iio_dev, ret = scmi_iio_get_odr_val(iio_dev, val, val2); return ret ? ret : IIO_VAL_INT_PLUS_MICRO; case IIO_CHAN_INFO_RAW: - ret = iio_device_claim_direct_mode(iio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(iio_dev)) + return -EBUSY; ret = scmi_iio_read_channel_data(iio_dev, ch, val, val2); - iio_device_release_direct_mode(iio_dev); + iio_device_release_direct(iio_dev); return ret; default: return -EINVAL; -- cgit v1.2.3 From f664ab98b2385c53b60cada81da576fb5cf2c6f6 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 31 Mar 2025 13:12:47 +0100 Subject: iio: common: st_sensors: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250331121317.1694135-8-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/common/st_sensors/st_sensors_core.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/iio/common/st_sensors/st_sensors_core.c b/drivers/iio/common/st_sensors/st_sensors_core.c index e4f5a7ff7e74..8ce1dccfea4f 100644 --- a/drivers/iio/common/st_sensors/st_sensors_core.c +++ b/drivers/iio/common/st_sensors/st_sensors_core.c @@ -530,9 +530,8 @@ int st_sensors_read_info_raw(struct iio_dev *indio_dev, int err; struct st_sensor_data *sdata = iio_priv(indio_dev); - err = iio_device_claim_direct_mode(indio_dev); - if (err) - return err; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; mutex_lock(&sdata->odr_lock); @@ -551,7 +550,7 @@ int st_sensors_read_info_raw(struct iio_dev *indio_dev, out: mutex_unlock(&sdata->odr_lock); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); return err; } -- cgit v1.2.3 From fcc065fdf52fc8da44b17125449838118a4aeeff Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 31 Mar 2025 13:12:48 +0100 Subject: iio: gyro: adxrs290: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Cc: Nishant Malpani Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250331121317.1694135-9-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/gyro/adxrs290.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) diff --git a/drivers/iio/gyro/adxrs290.c b/drivers/iio/gyro/adxrs290.c index 223fc181109c..8fcb41f45baa 100644 --- a/drivers/iio/gyro/adxrs290.c +++ b/drivers/iio/gyro/adxrs290.c @@ -290,9 +290,8 @@ static int adxrs290_read_raw(struct iio_dev *indio_dev, switch (mask) { case IIO_CHAN_INFO_RAW: - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; switch (chan->type) { case IIO_ANGL_VEL: @@ -316,7 +315,7 @@ static int adxrs290_read_raw(struct iio_dev *indio_dev, break; } - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); return ret; case IIO_CHAN_INFO_SCALE: switch (chan->type) { @@ -366,9 +365,8 @@ static int adxrs290_write_raw(struct iio_dev *indio_dev, struct adxrs290_state *st = iio_priv(indio_dev); int ret, lpf_idx, hpf_idx; - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; switch (mask) { case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY: @@ -408,7 +406,7 @@ static int adxrs290_write_raw(struct iio_dev *indio_dev, break; } - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); return ret; } -- cgit v1.2.3 From 6c9dc1e8f296effd17f36a4653f6928c17a16dce Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 31 Mar 2025 13:12:49 +0100 Subject: iio: health: max30102: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. This particular case is about ensuring the mode does not change rather than ensuring we are in direct mode. A follow up may cleanup the buffer mode claim. Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250331121317.1694135-10-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/health/max30102.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/iio/health/max30102.c b/drivers/iio/health/max30102.c index 1d074eb6a8c5..dacc489f7293 100644 --- a/drivers/iio/health/max30102.c +++ b/drivers/iio/health/max30102.c @@ -484,11 +484,11 @@ any_mode_retry: * things cannot concurrently change. And we just keep * trying until we get one of the modes... */ - if (iio_device_claim_direct_mode(indio_dev)) + if (!iio_device_claim_direct(indio_dev)) goto any_mode_retry; ret = max30102_get_temp(data, val, true); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); } else { ret = max30102_get_temp(data, val, false); iio_device_release_buffer_mode(indio_dev); -- cgit v1.2.3 From d9e6b59e5ba942e7d804588e778bf0bdbbd6cca7 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 31 Mar 2025 13:12:50 +0100 Subject: iio: humidity: hdc100x: Use guard(mutex) to simplify code flow By using autoreleasing on the lock a number of paths can use direct returns allow earlier exit from functions. Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250331121317.1694135-11-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/humidity/hdc100x.c | 69 +++++++++++++++++------------------------- 1 file changed, 27 insertions(+), 42 deletions(-) diff --git a/drivers/iio/humidity/hdc100x.c b/drivers/iio/humidity/hdc100x.c index a303f704b7ed..fb8584423ad8 100644 --- a/drivers/iio/humidity/hdc100x.c +++ b/drivers/iio/humidity/hdc100x.c @@ -13,6 +13,7 @@ * https://www.ti.com/product/HDC1080/datasheet */ +#include #include #include #include @@ -206,26 +207,21 @@ static int hdc100x_read_raw(struct iio_dev *indio_dev, case IIO_CHAN_INFO_RAW: { int ret; - mutex_lock(&data->lock); + guard(mutex)(&data->lock); if (chan->type == IIO_CURRENT) { *val = hdc100x_get_heater_status(data); - ret = IIO_VAL_INT; - } else { - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) { - mutex_unlock(&data->lock); - return ret; - } - - ret = hdc100x_get_measurement(data, chan); - iio_device_release_direct_mode(indio_dev); - if (ret >= 0) { - *val = ret; - ret = IIO_VAL_INT; - } + return IIO_VAL_INT; } - mutex_unlock(&data->lock); - return ret; + ret = iio_device_claim_direct_mode(indio_dev); + if (ret) + return ret; + + ret = hdc100x_get_measurement(data, chan); + iio_device_release_direct_mode(indio_dev); + if (ret < 0) + return ret; + *val = ret; + return IIO_VAL_INT; } case IIO_CHAN_INFO_INT_TIME: *val = 0; @@ -256,26 +252,23 @@ static int hdc100x_write_raw(struct iio_dev *indio_dev, int val, int val2, long mask) { struct hdc100x_data *data = iio_priv(indio_dev); - int ret = -EINVAL; switch (mask) { - case IIO_CHAN_INFO_INT_TIME: + case IIO_CHAN_INFO_INT_TIME: { if (val != 0) return -EINVAL; - mutex_lock(&data->lock); - ret = hdc100x_set_it_time(data, chan->address, val2); - mutex_unlock(&data->lock); - return ret; - case IIO_CHAN_INFO_RAW: + guard(mutex)(&data->lock); + return hdc100x_set_it_time(data, chan->address, val2); + } + case IIO_CHAN_INFO_RAW: { if (chan->type != IIO_CURRENT || val2 != 0) return -EINVAL; - mutex_lock(&data->lock); - ret = hdc100x_update_config(data, HDC100X_REG_CONFIG_HEATER_EN, - val ? HDC100X_REG_CONFIG_HEATER_EN : 0); - mutex_unlock(&data->lock); - return ret; + guard(mutex)(&data->lock); + return hdc100x_update_config(data, HDC100X_REG_CONFIG_HEATER_EN, + val ? HDC100X_REG_CONFIG_HEATER_EN : 0); + } default: return -EINVAL; } @@ -284,27 +277,19 @@ static int hdc100x_write_raw(struct iio_dev *indio_dev, static int hdc100x_buffer_postenable(struct iio_dev *indio_dev) { struct hdc100x_data *data = iio_priv(indio_dev); - int ret; /* Buffer is enabled. First set ACQ Mode, then attach poll func */ - mutex_lock(&data->lock); - ret = hdc100x_update_config(data, HDC100X_REG_CONFIG_ACQ_MODE, - HDC100X_REG_CONFIG_ACQ_MODE); - mutex_unlock(&data->lock); - - return ret; + guard(mutex)(&data->lock); + return hdc100x_update_config(data, HDC100X_REG_CONFIG_ACQ_MODE, + HDC100X_REG_CONFIG_ACQ_MODE); } static int hdc100x_buffer_predisable(struct iio_dev *indio_dev) { struct hdc100x_data *data = iio_priv(indio_dev); - int ret; - mutex_lock(&data->lock); - ret = hdc100x_update_config(data, HDC100X_REG_CONFIG_ACQ_MODE, 0); - mutex_unlock(&data->lock); - - return ret; + guard(mutex)(&data->lock); + return hdc100x_update_config(data, HDC100X_REG_CONFIG_ACQ_MODE, 0); } static const struct iio_buffer_setup_ops hdc_buffer_setup_ops = { -- cgit v1.2.3 From 0d51e888e03074591a83ea6458d58a25e303d90a Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 31 Mar 2025 13:12:51 +0100 Subject: iio: humidity: hdc100x: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250331121317.1694135-12-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/humidity/hdc100x.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/iio/humidity/hdc100x.c b/drivers/iio/humidity/hdc100x.c index fb8584423ad8..c2b36e682e06 100644 --- a/drivers/iio/humidity/hdc100x.c +++ b/drivers/iio/humidity/hdc100x.c @@ -212,12 +212,11 @@ static int hdc100x_read_raw(struct iio_dev *indio_dev, *val = hdc100x_get_heater_status(data); return IIO_VAL_INT; } - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; ret = hdc100x_get_measurement(data, chan); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); if (ret < 0) return ret; *val = ret; -- cgit v1.2.3 From 35a34861ce8f719a32dc375a8c200dcf4774f21e Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 31 Mar 2025 13:12:52 +0100 Subject: iio: humidity: hdc2010: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Acked-by: Eugene Zaikonnikov Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250331121317.1694135-13-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/humidity/hdc2010.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) diff --git a/drivers/iio/humidity/hdc2010.c b/drivers/iio/humidity/hdc2010.c index f5867659e00f..894a8b4ab193 100644 --- a/drivers/iio/humidity/hdc2010.c +++ b/drivers/iio/humidity/hdc2010.c @@ -169,13 +169,12 @@ static int hdc2010_read_raw(struct iio_dev *indio_dev, *val = hdc2010_get_heater_status(data); return IIO_VAL_INT; } - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; mutex_lock(&data->lock); ret = hdc2010_get_prim_measurement_word(data, chan); mutex_unlock(&data->lock); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); if (ret < 0) return ret; *val = ret; @@ -184,13 +183,12 @@ static int hdc2010_read_raw(struct iio_dev *indio_dev, case IIO_CHAN_INFO_PEAK: { int ret; - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; mutex_lock(&data->lock); ret = hdc2010_get_peak_measurement_byte(data, chan); mutex_unlock(&data->lock); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); if (ret < 0) return ret; /* Scaling up the value so we can use same offset as RAW */ -- cgit v1.2.3 From db532a4114c7d35c3cf53a960e92ac4b00aea49c Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 31 Mar 2025 13:12:53 +0100 Subject: iio: humidity: hts211: Factor out everything under direct mode claim into helper functions. Pulling out the functionality of read_raw() and write_raw() callbacks so that only the mode claim is done in the initial call allows for direct returns and simpler error handling in the new __hts211_write_raw() / __hts211_read_raw() functions. Acked-by: Lorenzo Bianconi Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250331121317.1694135-14-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/humidity/hts221_core.c | 89 +++++++++++++++++++------------------- 1 file changed, 45 insertions(+), 44 deletions(-) diff --git a/drivers/iio/humidity/hts221_core.c b/drivers/iio/humidity/hts221_core.c index 0be11470730c..ca4746f2ecba 100644 --- a/drivers/iio/humidity/hts221_core.c +++ b/drivers/iio/humidity/hts221_core.c @@ -418,31 +418,22 @@ static int hts221_read_oneshot(struct hts221_hw *hw, u8 addr, int *val) return IIO_VAL_INT; } -static int hts221_read_raw(struct iio_dev *iio_dev, - struct iio_chan_spec const *ch, - int *val, int *val2, long mask) +static int __hts221_read_raw(struct iio_dev *iio_dev, + struct iio_chan_spec const *ch, + int *val, int *val2, long mask) { struct hts221_hw *hw = iio_priv(iio_dev); - int ret; - - ret = iio_device_claim_direct_mode(iio_dev); - if (ret) - return ret; switch (mask) { case IIO_CHAN_INFO_RAW: - ret = hts221_read_oneshot(hw, ch->address, val); - break; + return hts221_read_oneshot(hw, ch->address, val); case IIO_CHAN_INFO_SCALE: - ret = hts221_get_sensor_scale(hw, ch->type, val, val2); - break; + return hts221_get_sensor_scale(hw, ch->type, val, val2); case IIO_CHAN_INFO_OFFSET: - ret = hts221_get_sensor_offset(hw, ch->type, val, val2); - break; + return hts221_get_sensor_offset(hw, ch->type, val, val2); case IIO_CHAN_INFO_SAMP_FREQ: *val = hw->odr; - ret = IIO_VAL_INT; - break; + return IIO_VAL_INT; case IIO_CHAN_INFO_OVERSAMPLING_RATIO: { u8 idx; const struct hts221_avg *avg; @@ -452,62 +443,72 @@ static int hts221_read_raw(struct iio_dev *iio_dev, avg = &hts221_avg_list[HTS221_SENSOR_H]; idx = hw->sensors[HTS221_SENSOR_H].cur_avg_idx; *val = avg->avg_avl[idx]; - ret = IIO_VAL_INT; - break; + return IIO_VAL_INT; case IIO_TEMP: avg = &hts221_avg_list[HTS221_SENSOR_T]; idx = hw->sensors[HTS221_SENSOR_T].cur_avg_idx; *val = avg->avg_avl[idx]; - ret = IIO_VAL_INT; - break; + return IIO_VAL_INT; default: - ret = -EINVAL; - break; + return -EINVAL; } - break; } default: - ret = -EINVAL; - break; + return -EINVAL; } - - iio_device_release_direct_mode(iio_dev); - - return ret; } -static int hts221_write_raw(struct iio_dev *iio_dev, - struct iio_chan_spec const *chan, - int val, int val2, long mask) +static int hts221_read_raw(struct iio_dev *iio_dev, + struct iio_chan_spec const *ch, + int *val, int *val2, long mask) { - struct hts221_hw *hw = iio_priv(iio_dev); int ret; ret = iio_device_claim_direct_mode(iio_dev); if (ret) return ret; + ret = __hts221_read_raw(iio_dev, ch, val, val2, mask); + + iio_device_release_direct_mode(iio_dev); + + return ret; +} + +static int __hts221_write_raw(struct iio_dev *iio_dev, + struct iio_chan_spec const *chan, + int val, long mask) +{ + struct hts221_hw *hw = iio_priv(iio_dev); + switch (mask) { case IIO_CHAN_INFO_SAMP_FREQ: - ret = hts221_update_odr(hw, val); - break; + return hts221_update_odr(hw, val); case IIO_CHAN_INFO_OVERSAMPLING_RATIO: switch (chan->type) { case IIO_HUMIDITYRELATIVE: - ret = hts221_update_avg(hw, HTS221_SENSOR_H, val); - break; + return hts221_update_avg(hw, HTS221_SENSOR_H, val); case IIO_TEMP: - ret = hts221_update_avg(hw, HTS221_SENSOR_T, val); - break; + return hts221_update_avg(hw, HTS221_SENSOR_T, val); default: - ret = -EINVAL; - break; + return -EINVAL; } - break; default: - ret = -EINVAL; - break; + return -EINVAL; } +} + +static int hts221_write_raw(struct iio_dev *iio_dev, + struct iio_chan_spec const *chan, + int val, int val2, long mask) +{ + int ret; + + ret = iio_device_claim_direct_mode(iio_dev); + if (ret) + return ret; + + ret = __hts221_write_raw(iio_dev, chan, val, mask); iio_device_release_direct_mode(iio_dev); -- cgit v1.2.3 From ca75b9fb28d6c61f45be36269e0f2ef4f0cd17e0 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 31 Mar 2025 13:12:54 +0100 Subject: iio: humidity: hts211: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Acked-by: Lorenzo Bianconi Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250331121317.1694135-15-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/humidity/hts221_core.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) diff --git a/drivers/iio/humidity/hts221_core.c b/drivers/iio/humidity/hts221_core.c index ca4746f2ecba..bfeb0a60d3af 100644 --- a/drivers/iio/humidity/hts221_core.c +++ b/drivers/iio/humidity/hts221_core.c @@ -464,13 +464,12 @@ static int hts221_read_raw(struct iio_dev *iio_dev, { int ret; - ret = iio_device_claim_direct_mode(iio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(iio_dev)) + return -EBUSY; ret = __hts221_read_raw(iio_dev, ch, val, val2, mask); - iio_device_release_direct_mode(iio_dev); + iio_device_release_direct(iio_dev); return ret; } @@ -504,13 +503,12 @@ static int hts221_write_raw(struct iio_dev *iio_dev, { int ret; - ret = iio_device_claim_direct_mode(iio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(iio_dev)) + return -EBUSY; ret = __hts221_write_raw(iio_dev, chan, val, mask); - iio_device_release_direct_mode(iio_dev); + iio_device_release_direct(iio_dev); return ret; } -- cgit v1.2.3 From cbff19a382bbedd2a247ca9fc52fc1a884f13ac3 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 31 Mar 2025 13:12:55 +0100 Subject: iio: imu: inv_icm42600: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Acked-by: Jean-Baptiste Maneyrol Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250331121317.1694135-16-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/imu/inv_icm42600/inv_icm42600_accel.c | 21 +++++++++------------ drivers/iio/imu/inv_icm42600/inv_icm42600_gyro.c | 21 +++++++++------------ drivers/iio/imu/inv_icm42600/inv_icm42600_temp.c | 7 +++---- 3 files changed, 21 insertions(+), 28 deletions(-) diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_accel.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_accel.c index 388520ec60b5..1a67f5ce1800 100644 --- a/drivers/iio/imu/inv_icm42600/inv_icm42600_accel.c +++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_accel.c @@ -685,11 +685,10 @@ static int inv_icm42600_accel_read_raw(struct iio_dev *indio_dev, switch (mask) { case IIO_CHAN_INFO_RAW: - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; ret = inv_icm42600_accel_read_sensor(indio_dev, chan, &data); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); if (ret) return ret; *val = data; @@ -747,20 +746,18 @@ static int inv_icm42600_accel_write_raw(struct iio_dev *indio_dev, switch (mask) { case IIO_CHAN_INFO_SCALE: - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; ret = inv_icm42600_accel_write_scale(indio_dev, val, val2); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); return ret; case IIO_CHAN_INFO_SAMP_FREQ: return inv_icm42600_accel_write_odr(indio_dev, val, val2); case IIO_CHAN_INFO_CALIBBIAS: - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; ret = inv_icm42600_accel_write_offset(st, chan, val, val2); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); return ret; default: return -EINVAL; diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_gyro.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_gyro.c index 591ed78a55bb..70bac8ca28fa 100644 --- a/drivers/iio/imu/inv_icm42600/inv_icm42600_gyro.c +++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_gyro.c @@ -591,11 +591,10 @@ static int inv_icm42600_gyro_read_raw(struct iio_dev *indio_dev, switch (mask) { case IIO_CHAN_INFO_RAW: - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; ret = inv_icm42600_gyro_read_sensor(st, chan, &data); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); if (ret) return ret; *val = data; @@ -653,20 +652,18 @@ static int inv_icm42600_gyro_write_raw(struct iio_dev *indio_dev, switch (mask) { case IIO_CHAN_INFO_SCALE: - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; ret = inv_icm42600_gyro_write_scale(indio_dev, val, val2); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); return ret; case IIO_CHAN_INFO_SAMP_FREQ: return inv_icm42600_gyro_write_odr(indio_dev, val, val2); case IIO_CHAN_INFO_CALIBBIAS: - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; ret = inv_icm42600_gyro_write_offset(st, chan, val, val2); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); return ret; default: return -EINVAL; diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_temp.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_temp.c index 213cce1c3111..f77645d92efd 100644 --- a/drivers/iio/imu/inv_icm42600/inv_icm42600_temp.c +++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_temp.c @@ -56,11 +56,10 @@ int inv_icm42600_temp_read_raw(struct iio_dev *indio_dev, switch (mask) { case IIO_CHAN_INFO_RAW: - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; ret = inv_icm42600_temp_read(st, &temp); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); if (ret) return ret; *val = temp; -- cgit v1.2.3 From 4455bc5c303ba93720f5944b7230698661514651 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 31 Mar 2025 13:12:56 +0100 Subject: iio: imu: inv_mpu6050: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Acked-by: Jean-Baptiste Maneyrol Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250331121317.1694135-17-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/imu/inv_mpu6050/inv_mpu_core.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c index 5bcd5e797046..b8656c02354a 100644 --- a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c +++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c @@ -755,13 +755,12 @@ inv_mpu6050_read_raw(struct iio_dev *indio_dev, switch (mask) { case IIO_CHAN_INFO_RAW: - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; mutex_lock(&st->lock); ret = inv_mpu6050_read_channel_data(indio_dev, chan, val); mutex_unlock(&st->lock); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); return ret; case IIO_CHAN_INFO_SCALE: switch (chan->type) { @@ -895,9 +894,8 @@ static int inv_mpu6050_write_raw(struct iio_dev *indio_dev, * we should only update scale when the chip is disabled, i.e. * not running */ - result = iio_device_claim_direct_mode(indio_dev); - if (result) - return result; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; mutex_lock(&st->lock); result = pm_runtime_resume_and_get(pdev); @@ -944,7 +942,7 @@ static int inv_mpu6050_write_raw(struct iio_dev *indio_dev, pm_runtime_put_autosuspend(pdev); error_write_raw_unlock: mutex_unlock(&st->lock); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); return result; } -- cgit v1.2.3 From 59d3109aabf10af0451fff862e9bc0a3bd48f0b7 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 31 Mar 2025 13:12:57 +0100 Subject: iio: imu: smi240: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Cc: Shen Jianping Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250331121317.1694135-18-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/imu/smi240.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/iio/imu/smi240.c b/drivers/iio/imu/smi240.c index 4492c4d013bd..d159ee59acdd 100644 --- a/drivers/iio/imu/smi240.c +++ b/drivers/iio/imu/smi240.c @@ -414,11 +414,10 @@ static int smi240_read_raw(struct iio_dev *indio_dev, switch (mask) { case IIO_CHAN_INFO_RAW: - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; ret = smi240_get_data(data, chan->type, chan->channel2, val); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); if (ret) return ret; return IIO_VAL_INT; -- cgit v1.2.3 From ee56bbcaad718a73058a80c500def21755715a24 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 31 Mar 2025 13:12:58 +0100 Subject: iio: imu: st_lsm6dsx: Factor out parts of st_lsm6dsx_shub_write_raw() to allow direct returns By factoring out all the code that occurs with direct mode claimed to a helper function, that helper function can directly return simplifying code flow. Acked-by: Lorenzo Bianconi Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250331121317.1694135-19-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c | 65 +++++++++++++++------------- 1 file changed, 35 insertions(+), 30 deletions(-) diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c index c1b444520d2a..17a74f5adfc0 100644 --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c @@ -614,53 +614,58 @@ st_lsm6dsx_shub_set_full_scale(struct st_lsm6dsx_sensor *sensor, } static int -st_lsm6dsx_shub_write_raw(struct iio_dev *iio_dev, - struct iio_chan_spec const *chan, - int val, int val2, long mask) +__st_lsm6dsx_shub_write_raw(struct iio_dev *iio_dev, + struct iio_chan_spec const *chan, + int val, int val2, long mask) { struct st_lsm6dsx_sensor *sensor = iio_priv(iio_dev); int err; - err = iio_device_claim_direct_mode(iio_dev); - if (err) - return err; - switch (mask) { case IIO_CHAN_INFO_SAMP_FREQ: { + struct st_lsm6dsx_hw *hw = sensor->hw; + struct st_lsm6dsx_sensor *ref_sensor; + u8 odr_val; u16 data; + int odr; val = val * 1000 + val2 / 1000; err = st_lsm6dsx_shub_get_odr_val(sensor, val, &data); - if (!err) { - struct st_lsm6dsx_hw *hw = sensor->hw; - struct st_lsm6dsx_sensor *ref_sensor; - u8 odr_val; - int odr; - - ref_sensor = iio_priv(hw->iio_devs[ST_LSM6DSX_ID_ACC]); - odr = st_lsm6dsx_check_odr(ref_sensor, val, &odr_val); - if (odr < 0) { - err = odr; - goto release; - } - - sensor->ext_info.slv_odr = val; - sensor->odr = odr; - } - break; + if (err) + return err; + + ref_sensor = iio_priv(hw->iio_devs[ST_LSM6DSX_ID_ACC]); + odr = st_lsm6dsx_check_odr(ref_sensor, val, &odr_val); + if (odr < 0) + return odr; + + sensor->ext_info.slv_odr = val; + sensor->odr = odr; + return 0; } case IIO_CHAN_INFO_SCALE: - err = st_lsm6dsx_shub_set_full_scale(sensor, val2); - break; + return st_lsm6dsx_shub_set_full_scale(sensor, val2); default: - err = -EINVAL; - break; + return -EINVAL; } +} + +static int +st_lsm6dsx_shub_write_raw(struct iio_dev *iio_dev, + struct iio_chan_spec const *chan, + int val, int val2, long mask) +{ + int ret; + + ret = iio_device_claim_direct_mode(iio_dev); + if (ret) + return ret; + + ret = __st_lsm6dsx_shub_write_raw(iio_dev, chan, val, val2, mask); -release: iio_device_release_direct_mode(iio_dev); - return err; + return ret; } static ssize_t -- cgit v1.2.3 From a332a90eacd1fe6e5031f9b4dd0007c1f0375f02 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 31 Mar 2025 13:12:59 +0100 Subject: iio: imu: st_lsm6dsx: Switch to sparse friendly claim/release_direct() This driver caused a false positive with __cond_lock() style solution but is fine with the simple boolean return approach now used. Acked-by: Lorenzo Bianconi Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250331121317.1694135-20-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c | 16 +++++++--------- 1 file changed, 7 insertions(+), 9 deletions(-) diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c index 4fdcc2acc94e..670cd217eb50 100644 --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c @@ -1804,12 +1804,11 @@ static int st_lsm6dsx_read_raw(struct iio_dev *iio_dev, switch (mask) { case IIO_CHAN_INFO_RAW: - ret = iio_device_claim_direct_mode(iio_dev); - if (ret) - break; + if (!iio_device_claim_direct(iio_dev)) + return -EBUSY; ret = st_lsm6dsx_read_oneshot(sensor, ch->address, val); - iio_device_release_direct_mode(iio_dev); + iio_device_release_direct(iio_dev); break; case IIO_CHAN_INFO_SAMP_FREQ: *val = sensor->odr / 1000; @@ -1834,11 +1833,10 @@ static int st_lsm6dsx_write_raw(struct iio_dev *iio_dev, int val, int val2, long mask) { struct st_lsm6dsx_sensor *sensor = iio_priv(iio_dev); - int err; + int err = 0; - err = iio_device_claim_direct_mode(iio_dev); - if (err) - return err; + if (!iio_device_claim_direct(iio_dev)) + return -EBUSY; switch (mask) { case IIO_CHAN_INFO_SCALE: @@ -1860,7 +1858,7 @@ static int st_lsm6dsx_write_raw(struct iio_dev *iio_dev, break; } - iio_device_release_direct_mode(iio_dev); + iio_device_release_direct(iio_dev); return err; } -- cgit v1.2.3 From 0daeba3edabf61a273779280153903e6a0bca4be Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 31 Mar 2025 13:13:00 +0100 Subject: iio: imu: st_lsm6dsx: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Acked-by: Lorenzo Bianconi Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250331121317.1694135-21-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c index 17a74f5adfc0..3c5e65dc0f97 100644 --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c @@ -558,12 +558,11 @@ st_lsm6dsx_shub_read_raw(struct iio_dev *iio_dev, switch (mask) { case IIO_CHAN_INFO_RAW: - ret = iio_device_claim_direct_mode(iio_dev); - if (ret) - break; + if (!iio_device_claim_direct(iio_dev)) + return -EBUSY; ret = st_lsm6dsx_shub_read_oneshot(sensor, ch, val); - iio_device_release_direct_mode(iio_dev); + iio_device_release_direct(iio_dev); break; case IIO_CHAN_INFO_SAMP_FREQ: *val = sensor->ext_info.slv_odr / 1000; @@ -657,13 +656,12 @@ st_lsm6dsx_shub_write_raw(struct iio_dev *iio_dev, { int ret; - ret = iio_device_claim_direct_mode(iio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(iio_dev)) + return -EBUSY; ret = __st_lsm6dsx_shub_write_raw(iio_dev, chan, val, val2, mask); - iio_device_release_direct_mode(iio_dev); + iio_device_release_direct(iio_dev); return ret; } -- cgit v1.2.3 From b5228482ebb9239c494e51aa8814ba1b4033d20a Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 31 Mar 2025 13:13:01 +0100 Subject: iio: magnetometer: mag3110: Factor out core of read/write_raw() and use guard() to simplify code flow. The combination of guard(mutex) and factoring out sections of code that occur with the device held in direct mode simplifies code flow. Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250331121317.1694135-22-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/magnetometer/mag3110.c | 153 ++++++++++++++++++------------------- 1 file changed, 75 insertions(+), 78 deletions(-) diff --git a/drivers/iio/magnetometer/mag3110.c b/drivers/iio/magnetometer/mag3110.c index 2fe8e97f2cf8..b633bdf793ed 100644 --- a/drivers/iio/magnetometer/mag3110.c +++ b/drivers/iio/magnetometer/mag3110.c @@ -9,6 +9,7 @@ * TODO: irq, user offset, oversampling, continuous mode */ +#include #include #include #include @@ -102,17 +103,12 @@ static int mag3110_read(struct mag3110_data *data, __be16 buf[3]) { int ret; - mutex_lock(&data->lock); + guard(mutex)(&data->lock); ret = mag3110_request(data); - if (ret < 0) { - mutex_unlock(&data->lock); + if (ret < 0) return ret; - } - ret = i2c_smbus_read_i2c_block_data(data->client, - MAG3110_OUT_X, 3 * sizeof(__be16), (u8 *) buf); - mutex_unlock(&data->lock); - - return ret; + return i2c_smbus_read_i2c_block_data(data->client, MAG3110_OUT_X, + 3 * sizeof(__be16), (u8 *) buf); } static ssize_t mag3110_show_int_plus_micros(char *buf, @@ -231,19 +227,17 @@ static int mag3110_change_config(struct mag3110_data *data, u8 reg, u8 val) int ret; int is_active; - mutex_lock(&data->lock); + guard(mutex)(&data->lock); is_active = mag3110_is_active(data); - if (is_active < 0) { - ret = is_active; - goto fail; - } + if (is_active < 0) + return is_active; /* config can only be changed when in standby */ if (is_active > 0) { ret = mag3110_standby(data); if (ret < 0) - goto fail; + return ret; } /* @@ -252,23 +246,52 @@ static int mag3110_change_config(struct mag3110_data *data, u8 reg, u8 val) */ ret = mag3110_wait_standby(data); if (ret < 0) - goto fail; + return ret; ret = i2c_smbus_write_byte_data(data->client, reg, val); if (ret < 0) - goto fail; + return ret; if (is_active > 0) { ret = mag3110_active(data); if (ret < 0) - goto fail; + return ret; } - ret = 0; -fail: - mutex_unlock(&data->lock); + return 0; +} - return ret; +static int __mag3110_read_info_raw(struct mag3110_data *data, + struct iio_chan_spec const *chan, + int *val) +{ + __be16 buffer[3]; + int ret; + + switch (chan->type) { + case IIO_MAGN: /* in 0.1 uT / LSB */ + ret = mag3110_read(data, buffer); + if (ret < 0) + return ret; + *val = sign_extend32(be16_to_cpu(buffer[chan->scan_index]), + chan->scan_type.realbits - 1); + return IIO_VAL_INT; + + case IIO_TEMP: { /* in 1 C / LSB */ + guard(mutex)(&data->lock); + ret = mag3110_request(data); + if (ret < 0) + return ret; + ret = i2c_smbus_read_byte_data(data->client, + MAG3110_DIE_TEMP); + if (ret < 0) + return ret; + *val = sign_extend32(ret, chan->scan_type.realbits - 1); + return IIO_VAL_INT; + } + default: + return -EINVAL; + } } static int mag3110_read_raw(struct iio_dev *indio_dev, @@ -276,7 +299,6 @@ static int mag3110_read_raw(struct iio_dev *indio_dev, int *val, int *val2, long mask) { struct mag3110_data *data = iio_priv(indio_dev); - __be16 buffer[3]; int i, ret; switch (mask) { @@ -284,37 +306,7 @@ static int mag3110_read_raw(struct iio_dev *indio_dev, ret = iio_device_claim_direct_mode(indio_dev); if (ret) return ret; - - switch (chan->type) { - case IIO_MAGN: /* in 0.1 uT / LSB */ - ret = mag3110_read(data, buffer); - if (ret < 0) - goto release; - *val = sign_extend32( - be16_to_cpu(buffer[chan->scan_index]), - chan->scan_type.realbits - 1); - ret = IIO_VAL_INT; - break; - case IIO_TEMP: /* in 1 C / LSB */ - mutex_lock(&data->lock); - ret = mag3110_request(data); - if (ret < 0) { - mutex_unlock(&data->lock); - goto release; - } - ret = i2c_smbus_read_byte_data(data->client, - MAG3110_DIE_TEMP); - mutex_unlock(&data->lock); - if (ret < 0) - goto release; - *val = sign_extend32(ret, - chan->scan_type.realbits - 1); - ret = IIO_VAL_INT; - break; - default: - ret = -EINVAL; - } -release: + ret = __mag3110_read_info_raw(data, chan, val); iio_device_release_direct_mode(indio_dev); return ret; @@ -346,24 +338,18 @@ release: return -EINVAL; } -static int mag3110_write_raw(struct iio_dev *indio_dev, - struct iio_chan_spec const *chan, - int val, int val2, long mask) +static int __mag3110_write_raw(struct mag3110_data *data, + struct iio_chan_spec const *chan, + int val, int val2, long mask) { - struct mag3110_data *data = iio_priv(indio_dev); - int rate, ret; - - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + int rate; switch (mask) { case IIO_CHAN_INFO_SAMP_FREQ: rate = mag3110_get_samp_freq_index(data, val, val2); - if (rate < 0) { - ret = -EINVAL; - break; - } + if (rate < 0) + return -EINVAL; + data->ctrl_reg1 &= 0xff & ~MAG3110_CTRL_DR_MASK & ~MAG3110_CTRL_AC; data->ctrl_reg1 |= rate << MAG3110_CTRL_DR_SHIFT; @@ -371,22 +357,33 @@ static int mag3110_write_raw(struct iio_dev *indio_dev, if (data->sleep_val < 40) data->ctrl_reg1 |= MAG3110_CTRL_AC; - ret = mag3110_change_config(data, MAG3110_CTRL_REG1, - data->ctrl_reg1); - break; + return mag3110_change_config(data, MAG3110_CTRL_REG1, + data->ctrl_reg1); + case IIO_CHAN_INFO_CALIBBIAS: - if (val < -10000 || val > 10000) { - ret = -EINVAL; - break; - } - ret = i2c_smbus_write_word_swapped(data->client, + if (val < -10000 || val > 10000) + return -EINVAL; + + return i2c_smbus_write_word_swapped(data->client, MAG3110_OFF_X + 2 * chan->scan_index, val << 1); - break; default: - ret = -EINVAL; - break; + return -EINVAL; } +} + +static int mag3110_write_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int val, int val2, long mask) +{ + struct mag3110_data *data = iio_priv(indio_dev); + int ret; + + ret = iio_device_claim_direct_mode(indio_dev); + if (ret) + return ret; + ret = __mag3110_write_raw(data, chan, val, val2, mask); iio_device_release_direct_mode(indio_dev); + return ret; } -- cgit v1.2.3 From 587895606e1193cecc16adc650d7d20b719fa86c Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 31 Mar 2025 13:13:02 +0100 Subject: iio: magnetometer: mag3110: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250331121317.1694135-23-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/magnetometer/mag3110.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) diff --git a/drivers/iio/magnetometer/mag3110.c b/drivers/iio/magnetometer/mag3110.c index b633bdf793ed..92d4511ed372 100644 --- a/drivers/iio/magnetometer/mag3110.c +++ b/drivers/iio/magnetometer/mag3110.c @@ -303,11 +303,10 @@ static int mag3110_read_raw(struct iio_dev *indio_dev, switch (mask) { case IIO_CHAN_INFO_RAW: - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; ret = __mag3110_read_info_raw(data, chan, val); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); return ret; case IIO_CHAN_INFO_SCALE: @@ -378,11 +377,10 @@ static int mag3110_write_raw(struct iio_dev *indio_dev, struct mag3110_data *data = iio_priv(indio_dev); int ret; - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; ret = __mag3110_write_raw(data, chan, val, val2, mask); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); return ret; } -- cgit v1.2.3 From e0a4d6a93eb10ab255cd50fcc5375cc788e32ec5 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 31 Mar 2025 13:13:03 +0100 Subject: iio: magnetometer: rm3100: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250331121317.1694135-24-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/magnetometer/rm3100-core.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/iio/magnetometer/rm3100-core.c b/drivers/iio/magnetometer/rm3100-core.c index c99694a77a14..e5162ee64e01 100644 --- a/drivers/iio/magnetometer/rm3100-core.c +++ b/drivers/iio/magnetometer/rm3100-core.c @@ -399,12 +399,11 @@ static int rm3100_read_raw(struct iio_dev *indio_dev, switch (mask) { case IIO_CHAN_INFO_RAW: - ret = iio_device_claim_direct_mode(indio_dev); - if (ret < 0) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; ret = rm3100_read_mag(data, chan->scan_index, val); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); return ret; case IIO_CHAN_INFO_SCALE: -- cgit v1.2.3 From 74fc7aacda0f97758df9b2a0ddfe385a6d0e1f35 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 31 Mar 2025 13:13:04 +0100 Subject: iio: pressure: dlhl60d: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250331121317.1694135-25-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/pressure/dlhl60d.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/iio/pressure/dlhl60d.c b/drivers/iio/pressure/dlhl60d.c index e99e97ea6300..e0aa12949cde 100644 --- a/drivers/iio/pressure/dlhl60d.c +++ b/drivers/iio/pressure/dlhl60d.c @@ -147,12 +147,11 @@ static int dlh_read_raw(struct iio_dev *indio_dev, switch (mask) { case IIO_CHAN_INFO_RAW: - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; ret = dlh_read_direct(st, &pressure, &temperature); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); if (ret) return ret; -- cgit v1.2.3 From b2a3a51000a71cd33337b05b5a3df78ba89a6727 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 31 Mar 2025 13:13:05 +0100 Subject: iio: pressure: icp10100: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Acked-by: Jean-Baptiste Maneyrol Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250331121317.1694135-26-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/pressure/icp10100.c | 15 ++++++--------- 1 file changed, 6 insertions(+), 9 deletions(-) diff --git a/drivers/iio/pressure/icp10100.c b/drivers/iio/pressure/icp10100.c index 3e0bf5d31ad7..1951c1cc84cf 100644 --- a/drivers/iio/pressure/icp10100.c +++ b/drivers/iio/pressure/icp10100.c @@ -343,9 +343,8 @@ static int icp10100_read_raw_measures(struct iio_dev *indio_dev, uint32_t pressure_mPa; int ret; - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; ret = icp10100_get_measures(st, &raw_pressure, &raw_temp); if (ret) @@ -370,7 +369,7 @@ static int icp10100_read_raw_measures(struct iio_dev *indio_dev, } error_release: - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); return ret; } @@ -439,7 +438,6 @@ static int icp10100_write_raw(struct iio_dev *indio_dev, { struct icp10100_state *st = iio_priv(indio_dev); unsigned int mode; - int ret; switch (mask) { case IIO_CHAN_INFO_OVERSAMPLING_RATIO: @@ -449,13 +447,12 @@ static int icp10100_write_raw(struct iio_dev *indio_dev, mode = ilog2(val); if (mode >= ICP10100_MODE_NB) return -EINVAL; - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; mutex_lock(&st->lock); st->mode = mode; mutex_unlock(&st->lock); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); return 0; default: return -EINVAL; -- cgit v1.2.3 From 770ee1a2c5d99a72914f521f894d6d1c0624837a Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 31 Mar 2025 13:13:06 +0100 Subject: iio: pressure: mpl3115: factor out core of IIO_INFO_RAW read to simplify code flow Apply guard(mutex) to remove the need for manual release of the lock. Factor out the code that occurs under the direct claim. These two changes allow for direct returns simplifying code flow. Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250331121317.1694135-27-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/pressure/mpl3115.c | 90 ++++++++++++++++++++++-------------------- 1 file changed, 47 insertions(+), 43 deletions(-) diff --git a/drivers/iio/pressure/mpl3115.c b/drivers/iio/pressure/mpl3115.c index 71ded2eee060..207031b5ff72 100644 --- a/drivers/iio/pressure/mpl3115.c +++ b/drivers/iio/pressure/mpl3115.c @@ -69,6 +69,52 @@ static int mpl3115_request(struct mpl3115_data *data) return 0; } +static int mpl3115_read_info_raw(struct mpl3115_data *data, + struct iio_chan_spec const *chan, int *val) +{ + int ret; + + switch (chan->type) { + case IIO_PRESSURE: { /* in 0.25 pascal / LSB */ + __be32 tmp = 0; + + guard(mutex)(&data->lock); + ret = mpl3115_request(data); + if (ret < 0) + return ret; + + ret = i2c_smbus_read_i2c_block_data(data->client, + MPL3115_OUT_PRESS, + 3, (u8 *) &tmp); + if (ret < 0) + return ret; + + *val = be32_to_cpu(tmp) >> chan->scan_type.shift; + return IIO_VAL_INT; + } + case IIO_TEMP: { /* in 0.0625 celsius / LSB */ + __be16 tmp; + + guard(mutex)(&data->lock); + ret = mpl3115_request(data); + if (ret < 0) + return ret; + + ret = i2c_smbus_read_i2c_block_data(data->client, + MPL3115_OUT_TEMP, + 2, (u8 *) &tmp); + if (ret < 0) + return ret; + + *val = sign_extend32(be16_to_cpu(tmp) >> chan->scan_type.shift, + chan->scan_type.realbits - 1); + return IIO_VAL_INT; + } + default: + return -EINVAL; + } +} + static int mpl3115_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long mask) @@ -82,49 +128,7 @@ static int mpl3115_read_raw(struct iio_dev *indio_dev, if (ret) return ret; - switch (chan->type) { - case IIO_PRESSURE: { /* in 0.25 pascal / LSB */ - __be32 tmp = 0; - - mutex_lock(&data->lock); - ret = mpl3115_request(data); - if (ret < 0) { - mutex_unlock(&data->lock); - break; - } - ret = i2c_smbus_read_i2c_block_data(data->client, - MPL3115_OUT_PRESS, 3, (u8 *) &tmp); - mutex_unlock(&data->lock); - if (ret < 0) - break; - *val = be32_to_cpu(tmp) >> chan->scan_type.shift; - ret = IIO_VAL_INT; - break; - } - case IIO_TEMP: { /* in 0.0625 celsius / LSB */ - __be16 tmp; - - mutex_lock(&data->lock); - ret = mpl3115_request(data); - if (ret < 0) { - mutex_unlock(&data->lock); - break; - } - ret = i2c_smbus_read_i2c_block_data(data->client, - MPL3115_OUT_TEMP, 2, (u8 *) &tmp); - mutex_unlock(&data->lock); - if (ret < 0) - break; - *val = sign_extend32(be16_to_cpu(tmp) >> chan->scan_type.shift, - chan->scan_type.realbits - 1); - ret = IIO_VAL_INT; - break; - } - default: - ret = -EINVAL; - break; - } - + ret = mpl3115_read_info_raw(data, chan, val); iio_device_release_direct_mode(indio_dev); return ret; -- cgit v1.2.3 From d2de91b3eded57bc02a59ce154080cade7e7917b Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 31 Mar 2025 13:13:07 +0100 Subject: iio: pressure: mpl3115: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250331121317.1694135-28-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/pressure/mpl3115.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/iio/pressure/mpl3115.c b/drivers/iio/pressure/mpl3115.c index 207031b5ff72..8397155555bd 100644 --- a/drivers/iio/pressure/mpl3115.c +++ b/drivers/iio/pressure/mpl3115.c @@ -124,12 +124,11 @@ static int mpl3115_read_raw(struct iio_dev *indio_dev, switch (mask) { case IIO_CHAN_INFO_RAW: - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; ret = mpl3115_read_info_raw(data, chan, val); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); return ret; case IIO_CHAN_INFO_SCALE: -- cgit v1.2.3 From 1bfa7698bc9f5ec510d6082dc8f4fd4a58059764 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 31 Mar 2025 13:13:08 +0100 Subject: iio: pressure: ms5611: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250331121317.1694135-29-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/pressure/ms5611_core.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/drivers/iio/pressure/ms5611_core.c b/drivers/iio/pressure/ms5611_core.c index 00c077b2a2a4..bdac27bd5a5d 100644 --- a/drivers/iio/pressure/ms5611_core.c +++ b/drivers/iio/pressure/ms5611_core.c @@ -308,7 +308,6 @@ static int ms5611_write_raw(struct iio_dev *indio_dev, { struct ms5611_state *st = iio_priv(indio_dev); const struct ms5611_osr *osr = NULL; - int ret; if (mask != IIO_CHAN_INFO_OVERSAMPLING_RATIO) return -EINVAL; @@ -322,9 +321,8 @@ static int ms5611_write_raw(struct iio_dev *indio_dev, if (!osr) return -EINVAL; - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; mutex_lock(&st->lock); @@ -334,7 +332,7 @@ static int ms5611_write_raw(struct iio_dev *indio_dev, st->pressure_osr = osr; mutex_unlock(&st->lock); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); return 0; } -- cgit v1.2.3 From 71a998e791d828eae5dee08fa838d29a1297d80b Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 31 Mar 2025 13:13:09 +0100 Subject: iio: pressure: rohm-bm1390: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Reviewed-by: Matti Vaittinen Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250331121317.1694135-30-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/pressure/rohm-bm1390.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/iio/pressure/rohm-bm1390.c b/drivers/iio/pressure/rohm-bm1390.c index 9c1197f0e742..c48231739f48 100644 --- a/drivers/iio/pressure/rohm-bm1390.c +++ b/drivers/iio/pressure/rohm-bm1390.c @@ -319,12 +319,11 @@ static int bm1390_read_raw(struct iio_dev *idev, return -EINVAL; case IIO_CHAN_INFO_RAW: - ret = iio_device_claim_direct_mode(idev); - if (ret) - return ret; + if (!iio_device_claim_direct(idev)) + return -EBUSY; ret = bm1390_read_data(data, chan, val, val2); - iio_device_release_direct_mode(idev); + iio_device_release_direct(idev); if (ret) return ret; -- cgit v1.2.3 From 66024cb953d2a89078374cff459c0cefaa4c576b Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 31 Mar 2025 13:13:10 +0100 Subject: iio: pressure: zpa2326: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250331121317.1694135-31-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/pressure/zpa2326.c | 15 ++++++--------- 1 file changed, 6 insertions(+), 9 deletions(-) diff --git a/drivers/iio/pressure/zpa2326.c b/drivers/iio/pressure/zpa2326.c index 9db1c94dfc18..0a510d5fc1d4 100644 --- a/drivers/iio/pressure/zpa2326.c +++ b/drivers/iio/pressure/zpa2326.c @@ -1062,9 +1062,8 @@ static int zpa2326_sample_oneshot(struct iio_dev *indio_dev, int ret; struct zpa2326_private *priv; - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; ret = zpa2326_resume(indio_dev); if (ret < 0) @@ -1120,7 +1119,7 @@ static int zpa2326_sample_oneshot(struct iio_dev *indio_dev, suspend: zpa2326_suspend(indio_dev); release: - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); return ret; } @@ -1438,7 +1437,6 @@ static int zpa2326_set_frequency(struct iio_dev *indio_dev, int hz) { struct zpa2326_private *priv = iio_priv(indio_dev); int freq; - int err; /* Check if requested frequency is supported. */ for (freq = 0; freq < ARRAY_SIZE(zpa2326_sampling_frequencies); freq++) @@ -1448,13 +1446,12 @@ static int zpa2326_set_frequency(struct iio_dev *indio_dev, int hz) return -EINVAL; /* Don't allow changing frequency if buffered sampling is ongoing. */ - err = iio_device_claim_direct_mode(indio_dev); - if (err) - return err; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; priv->frequency = &zpa2326_sampling_frequencies[freq]; - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); return 0; } -- cgit v1.2.3 From 9dc7ed3bfe437b3a9fc5399fbe594a4b054eeeec Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 31 Mar 2025 13:13:11 +0100 Subject: iio: proximity: hx9023s: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Cc: Yasin Lee Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250331121317.1694135-32-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/proximity/hx9023s.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/iio/proximity/hx9023s.c b/drivers/iio/proximity/hx9023s.c index 5aa8e5a22f32..5be5f4986347 100644 --- a/drivers/iio/proximity/hx9023s.c +++ b/drivers/iio/proximity/hx9023s.c @@ -701,12 +701,11 @@ static int hx9023s_read_raw(struct iio_dev *indio_dev, switch (mask) { case IIO_CHAN_INFO_RAW: - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; ret = hx9023s_get_proximity(data, chan, val); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); return ret; case IIO_CHAN_INFO_SAMP_FREQ: return hx9023s_get_samp_freq(data, val, val2); -- cgit v1.2.3 From 3e3f57659b3d1affc21c8315164fc60e3d2ed7c5 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 31 Mar 2025 13:13:12 +0100 Subject: iio: proximity: pulsed-light: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250331121317.1694135-33-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/proximity/pulsedlight-lidar-lite-v2.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c b/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c index f3d054b06b4c..fbf9f8513055 100644 --- a/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c +++ b/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c @@ -208,7 +208,7 @@ static int lidar_read_raw(struct iio_dev *indio_dev, case IIO_CHAN_INFO_RAW: { u16 reg; - if (iio_device_claim_direct_mode(indio_dev)) + if (!iio_device_claim_direct(indio_dev)) return -EBUSY; ret = lidar_get_measurement(data, ®); @@ -216,7 +216,7 @@ static int lidar_read_raw(struct iio_dev *indio_dev, *val = reg; ret = IIO_VAL_INT; } - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); break; } case IIO_CHAN_INFO_SCALE: -- cgit v1.2.3 From 0ed4424478d36c8301dd4fbc18a49eafb5e67569 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 31 Mar 2025 13:13:13 +0100 Subject: iio: proximity: sx9500: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250331121317.1694135-34-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/proximity/sx9500.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/iio/proximity/sx9500.c b/drivers/iio/proximity/sx9500.c index c4e94d0fb163..b5e2855975ee 100644 --- a/drivers/iio/proximity/sx9500.c +++ b/drivers/iio/proximity/sx9500.c @@ -387,11 +387,10 @@ static int sx9500_read_raw(struct iio_dev *indio_dev, case IIO_PROXIMITY: switch (mask) { case IIO_CHAN_INFO_RAW: - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; ret = sx9500_read_proximity(data, chan, val); - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); return ret; case IIO_CHAN_INFO_SAMP_FREQ: return sx9500_read_samp_freq(data, val, val2); -- cgit v1.2.3 From 3332487099013f48108080f9c8ffeaddbef3724e Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 31 Mar 2025 13:13:14 +0100 Subject: iio: temp: maxim_thermocouple: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Tidy up a few direct returns whilst here. Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250331121317.1694135-35-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/temperature/maxim_thermocouple.c | 29 ++++++++++++---------------- 1 file changed, 12 insertions(+), 17 deletions(-) diff --git a/drivers/iio/temperature/maxim_thermocouple.c b/drivers/iio/temperature/maxim_thermocouple.c index c28a7a6dea5f..a1c213d5c469 100644 --- a/drivers/iio/temperature/maxim_thermocouple.c +++ b/drivers/iio/temperature/maxim_thermocouple.c @@ -183,40 +183,35 @@ static int maxim_thermocouple_read_raw(struct iio_dev *indio_dev, int *val, int *val2, long mask) { struct maxim_thermocouple_data *data = iio_priv(indio_dev); - int ret = -EINVAL; + int ret; switch (mask) { case IIO_CHAN_INFO_RAW: - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; ret = maxim_thermocouple_read(data, chan, val); - iio_device_release_direct_mode(indio_dev); - - if (!ret) - return IIO_VAL_INT; + iio_device_release_direct(indio_dev); + if (ret) + return ret; - break; + return IIO_VAL_INT; case IIO_CHAN_INFO_SCALE: switch (chan->channel2) { case IIO_MOD_TEMP_AMBIENT: *val = 62; *val2 = 500000; /* 1000 * 0.0625 */ - ret = IIO_VAL_INT_PLUS_MICRO; - break; + return IIO_VAL_INT_PLUS_MICRO; default: *val = 250; /* 1000 * 0.25 */ - ret = IIO_VAL_INT; + return IIO_VAL_INT; } - break; case IIO_CHAN_INFO_THERMOCOUPLE_TYPE: *val = data->tc_type; - ret = IIO_VAL_CHAR; - break; + return IIO_VAL_CHAR; + default: + return -EINVAL; } - - return ret; } static const struct iio_info maxim_thermocouple_info = { -- cgit v1.2.3 From e2729d5e04b9d1e76fb94373ffb27a85e6d9020b Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 31 Mar 2025 13:13:15 +0100 Subject: iio: temp: maxim_thermocouple: Drop unused mutex.h include. There are no mutex related calls in this driver. Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250331121317.1694135-36-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/temperature/maxim_thermocouple.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/iio/temperature/maxim_thermocouple.c b/drivers/iio/temperature/maxim_thermocouple.c index a1c213d5c469..a13efde76397 100644 --- a/drivers/iio/temperature/maxim_thermocouple.c +++ b/drivers/iio/temperature/maxim_thermocouple.c @@ -9,7 +9,6 @@ #include #include #include -#include #include #include #include -- cgit v1.2.3 From 692760702f80abb227cb6cd1f961cf13a4088b4c Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 31 Mar 2025 13:13:16 +0100 Subject: staging: iio: ad5933: Switch to sparse friendly iio_device_claim/release_direct() These new functions allow sparse to find failures to release direct mode reducing chances of bugs over the claim_direct_mode() functions that are deprecated. Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250331121317.1694135-37-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/staging/iio/impedance-analyzer/ad5933.c | 38 ++++++++++++++----------- 1 file changed, 21 insertions(+), 17 deletions(-) diff --git a/drivers/staging/iio/impedance-analyzer/ad5933.c b/drivers/staging/iio/impedance-analyzer/ad5933.c index d5544fc2fe98..5aaa43e94c52 100644 --- a/drivers/staging/iio/impedance-analyzer/ad5933.c +++ b/drivers/staging/iio/impedance-analyzer/ad5933.c @@ -271,11 +271,12 @@ static ssize_t ad5933_show_frequency(struct device *dev, u8 d8[4]; } dat; - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; + ret = ad5933_i2c_read(st->client, this_attr->address, 3, &dat.d8[1]); - iio_device_release_direct_mode(indio_dev); + + iio_device_release_direct(indio_dev); if (ret < 0) return ret; @@ -305,11 +306,12 @@ static ssize_t ad5933_store_frequency(struct device *dev, if (val > AD5933_MAX_OUTPUT_FREQ_Hz) return -EINVAL; - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; + ret = ad5933_set_freq(st, this_attr->address, val); - iio_device_release_direct_mode(indio_dev); + + iio_device_release_direct(indio_dev); return ret ? ret : len; } @@ -384,9 +386,9 @@ static ssize_t ad5933_store(struct device *dev, return ret; } - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; + mutex_lock(&st->lock); switch ((u32)this_attr->address) { case AD5933_OUT_RANGE: @@ -438,7 +440,8 @@ static ssize_t ad5933_store(struct device *dev, } mutex_unlock(&st->lock); - iio_device_release_direct_mode(indio_dev); + + iio_device_release_direct(indio_dev); return ret ? ret : len; } @@ -506,9 +509,9 @@ static int ad5933_read_raw(struct iio_dev *indio_dev, switch (m) { case IIO_CHAN_INFO_RAW: - ret = iio_device_claim_direct_mode(indio_dev); - if (ret) - return ret; + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; + ret = ad5933_cmd(st, AD5933_CTRL_MEASURE_TEMP); if (ret < 0) goto out; @@ -521,7 +524,8 @@ static int ad5933_read_raw(struct iio_dev *indio_dev, 2, (u8 *)&dat); if (ret < 0) goto out; - iio_device_release_direct_mode(indio_dev); + + iio_device_release_direct(indio_dev); *val = sign_extend32(be16_to_cpu(dat), 13); return IIO_VAL_INT; @@ -533,7 +537,7 @@ static int ad5933_read_raw(struct iio_dev *indio_dev, return -EINVAL; out: - iio_device_release_direct_mode(indio_dev); + iio_device_release_direct(indio_dev); return ret; } -- cgit v1.2.3 From 5d1dff5b45b7e81206ada46ae996f58129a68a7c Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Mon, 31 Mar 2025 13:13:17 +0100 Subject: iio: Adjust internals of handling of direct mode claiming to suit new API. Now there are no remaining callers of iio_device_claim_direct_mode() and iio_device_release_direct_mode() rename those functions to ensure they are not used in new drivers. Also make them now return booleans in line with the sparse friendly static inline wrappers. Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250331121317.1694135-38-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/industrialio-core.c | 28 ++++++++++++++++------------ include/linux/iio/iio.h | 10 ++++------ 2 files changed, 20 insertions(+), 18 deletions(-) diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c index c9955a1c1090..178e99b111de 100644 --- a/drivers/iio/industrialio-core.c +++ b/drivers/iio/industrialio-core.c @@ -2157,17 +2157,19 @@ int __devm_iio_device_register(struct device *dev, struct iio_dev *indio_dev, EXPORT_SYMBOL_GPL(__devm_iio_device_register); /** - * iio_device_claim_direct_mode - Keep device in direct mode + * __iio_device_claim_direct - Keep device in direct mode * @indio_dev: the iio_dev associated with the device * * If the device is in direct mode it is guaranteed to stay - * that way until iio_device_release_direct_mode() is called. + * that way until __iio_device_release_direct() is called. * - * Use with iio_device_release_direct_mode() + * Use with __iio_device_release_direct(). * - * Returns: 0 on success, -EBUSY on failure. + * Drivers should only call iio_device_claim_direct(). + * + * Returns: true on success, false on failure. */ -int iio_device_claim_direct_mode(struct iio_dev *indio_dev) +bool __iio_device_claim_direct(struct iio_dev *indio_dev) { struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev); @@ -2175,26 +2177,28 @@ int iio_device_claim_direct_mode(struct iio_dev *indio_dev) if (iio_buffer_enabled(indio_dev)) { mutex_unlock(&iio_dev_opaque->mlock); - return -EBUSY; + return false; } - return 0; + return true; } -EXPORT_SYMBOL_GPL(iio_device_claim_direct_mode); +EXPORT_SYMBOL_GPL(__iio_device_claim_direct); /** - * iio_device_release_direct_mode - releases claim on direct mode + * __iio_device_release_direct - releases claim on direct mode * @indio_dev: the iio_dev associated with the device * * Release the claim. Device is no longer guaranteed to stay * in direct mode. * - * Use with iio_device_claim_direct_mode() + * Drivers should only call iio_device_release_direct(). + * + * Use with __iio_device_claim_direct() */ -void iio_device_release_direct_mode(struct iio_dev *indio_dev) +void __iio_device_release_direct(struct iio_dev *indio_dev) { mutex_unlock(&to_iio_dev_opaque(indio_dev)->mlock); } -EXPORT_SYMBOL_GPL(iio_device_release_direct_mode); +EXPORT_SYMBOL_GPL(__iio_device_release_direct); /** * iio_device_claim_buffer_mode - Keep device in buffer mode diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h index 07a0e8132e88..638cf2420fbd 100644 --- a/include/linux/iio/iio.h +++ b/include/linux/iio/iio.h @@ -659,8 +659,8 @@ void iio_device_unregister(struct iio_dev *indio_dev); int __devm_iio_device_register(struct device *dev, struct iio_dev *indio_dev, struct module *this_mod); int iio_push_event(struct iio_dev *indio_dev, u64 ev_code, s64 timestamp); -int iio_device_claim_direct_mode(struct iio_dev *indio_dev); -void iio_device_release_direct_mode(struct iio_dev *indio_dev); +bool __iio_device_claim_direct(struct iio_dev *indio_dev); +void __iio_device_release_direct(struct iio_dev *indio_dev); /* * Helper functions that allow claim and release of direct mode @@ -671,9 +671,7 @@ void iio_device_release_direct_mode(struct iio_dev *indio_dev); */ static inline bool iio_device_claim_direct(struct iio_dev *indio_dev) { - int ret = iio_device_claim_direct_mode(indio_dev); - - if (ret) + if (!__iio_device_claim_direct(indio_dev)) return false; __acquire(iio_dev); @@ -683,7 +681,7 @@ static inline bool iio_device_claim_direct(struct iio_dev *indio_dev) static inline void iio_device_release_direct(struct iio_dev *indio_dev) { - iio_device_release_direct_mode(indio_dev); + __iio_device_release_direct(indio_dev); __release(indio_dev); } -- cgit v1.2.3 From ebe0b2a86a9ea995eaa934d146edd1545bdc8505 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Tue, 1 Apr 2025 17:50:08 -0500 Subject: dt-bindings: iio: adc: ad7380: add AD7389-4 Add compatible and quirks for AD7389-4. This is essentially the same as AD7380-4 but instead of having no internal reference, it has no external reference voltage supply. Signed-off-by: David Lechner Reviewed-by: Krzysztof Kozlowski Link: https://patch.msgid.link/20250401-iio-ad7380-add-ad7389-4-v1-1-23d2568aa24f@baylibre.com Signed-off-by: Jonathan Cameron --- Documentation/devicetree/bindings/iio/adc/adi,ad7380.yaml | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7380.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7380.yaml index ff4f5c21c548..8dae89ecb64d 100644 --- a/Documentation/devicetree/bindings/iio/adc/adi,ad7380.yaml +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7380.yaml @@ -25,6 +25,7 @@ description: | * https://www.analog.com/en/products/ad7386-4.html * https://www.analog.com/en/products/ad7387-4.html * https://www.analog.com/en/products/ad7388-4.html + * https://www.analog.com/en/products/ad7389-4.html * https://www.analog.com/en/products/adaq4370-4.html * https://www.analog.com/en/products/adaq4380-4.html * https://www.analog.com/en/products/adaq4381-4.html @@ -49,6 +50,7 @@ properties: - adi,ad7386-4 - adi,ad7387-4 - adi,ad7388-4 + - adi,ad7389-4 - adi,adaq4370-4 - adi,adaq4380-4 - adi,adaq4381-4 @@ -213,6 +215,15 @@ allOf: properties: refin-supply: false + # adi,ad7389-4 is internal reference only + - if: + properties: + compatible: + const: adi,ad7389-4 + then: + properties: + refio-supply: false + # adaq devices need more supplies and using channel to declare gain property # only applies to adaq devices - if: -- cgit v1.2.3 From abb97cc0ff56b103fb74239ea08a601dd1633746 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Tue, 1 Apr 2025 17:50:09 -0500 Subject: iio: adc: ad7380: rename internal_ref_only MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Rename adaq_internal_ref_only to internal_ref_only_adaq. There are non- ADAQ chips in the family that are also internal reference only, so the adaq_ prefix is misleading. Signed-off-by: David Lechner Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250401-iio-ad7380-add-ad7389-4-v1-2-23d2568aa24f@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7380.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/iio/adc/ad7380.c b/drivers/iio/adc/ad7380.c index 4fcb49fdf566..18ed07275be8 100644 --- a/drivers/iio/adc/ad7380.c +++ b/drivers/iio/adc/ad7380.c @@ -119,7 +119,7 @@ struct ad7380_chip_info { const char * const *supplies; unsigned int num_supplies; bool external_ref_only; - bool adaq_internal_ref_only; + bool internal_ref_only; const char * const *vcm_supplies; unsigned int num_vcm_supplies; const unsigned long *available_scan_masks; @@ -806,7 +806,7 @@ static const struct ad7380_chip_info adaq4370_4_chip_info = { .num_simult_channels = 4, .supplies = adaq4380_supplies, .num_supplies = ARRAY_SIZE(adaq4380_supplies), - .adaq_internal_ref_only = true, + .internal_ref_only = true, .has_hardware_gain = true, .available_scan_masks = ad7380_4_channel_scan_masks, .timing_specs = &ad7380_4_timing, @@ -821,7 +821,7 @@ static const struct ad7380_chip_info adaq4380_4_chip_info = { .num_simult_channels = 4, .supplies = adaq4380_supplies, .num_supplies = ARRAY_SIZE(adaq4380_supplies), - .adaq_internal_ref_only = true, + .internal_ref_only = true, .has_hardware_gain = true, .available_scan_masks = ad7380_4_channel_scan_masks, .timing_specs = &ad7380_4_timing, @@ -836,7 +836,7 @@ static const struct ad7380_chip_info adaq4381_4_chip_info = { .num_simult_channels = 4, .supplies = adaq4380_supplies, .num_supplies = ARRAY_SIZE(adaq4380_supplies), - .adaq_internal_ref_only = true, + .internal_ref_only = true, .has_hardware_gain = true, .available_scan_masks = ad7380_4_channel_scan_masks, .timing_specs = &ad7380_4_timing, @@ -1847,7 +1847,7 @@ static int ad7380_probe(struct spi_device *spi) "Failed to enable power supplies\n"); fsleep(T_POWERUP_US); - if (st->chip_info->adaq_internal_ref_only) { + if (st->chip_info->internal_ref_only) { /* * ADAQ chips use fixed internal reference but still * require a specific reference supply to power it. -- cgit v1.2.3 From d63a749bf75a8e44add76cbeb470ddac22b45352 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Tue, 1 Apr 2025 17:50:10 -0500 Subject: iio: adc: ad7380: move internal reference voltage to chip_info MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Move the internal reference voltage value to the chip_info structure. Before this change, only ADAQ chips could be internal_ref_only and only non-ADAQ chips could be external_ref_only. Now, this restriction is removed. Signed-off-by: David Lechner Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250401-iio-ad7380-add-ad7389-4-v1-3-23d2568aa24f@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7380.c | 22 ++++++++++++++++++++-- 1 file changed, 20 insertions(+), 2 deletions(-) diff --git a/drivers/iio/adc/ad7380.c b/drivers/iio/adc/ad7380.c index 18ed07275be8..e5cd11fd7b10 100644 --- a/drivers/iio/adc/ad7380.c +++ b/drivers/iio/adc/ad7380.c @@ -120,6 +120,7 @@ struct ad7380_chip_info { unsigned int num_supplies; bool external_ref_only; bool internal_ref_only; + unsigned int internal_ref_mv; const char * const *vcm_supplies; unsigned int num_vcm_supplies; const unsigned long *available_scan_masks; @@ -609,6 +610,7 @@ static const struct ad7380_chip_info ad7380_chip_info = { .num_simult_channels = 2, .supplies = ad7380_supplies, .num_supplies = ARRAY_SIZE(ad7380_supplies), + .internal_ref_mv = AD7380_INTERNAL_REF_MV, .available_scan_masks = ad7380_2_channel_scan_masks, .timing_specs = &ad7380_timing, .max_conversion_rate_hz = 4 * MEGA, @@ -622,6 +624,7 @@ static const struct ad7380_chip_info ad7381_chip_info = { .num_simult_channels = 2, .supplies = ad7380_supplies, .num_supplies = ARRAY_SIZE(ad7380_supplies), + .internal_ref_mv = AD7380_INTERNAL_REF_MV, .available_scan_masks = ad7380_2_channel_scan_masks, .timing_specs = &ad7380_timing, .max_conversion_rate_hz = 4 * MEGA, @@ -637,6 +640,7 @@ static const struct ad7380_chip_info ad7383_chip_info = { .num_supplies = ARRAY_SIZE(ad7380_supplies), .vcm_supplies = ad7380_2_channel_vcm_supplies, .num_vcm_supplies = ARRAY_SIZE(ad7380_2_channel_vcm_supplies), + .internal_ref_mv = AD7380_INTERNAL_REF_MV, .available_scan_masks = ad7380_2_channel_scan_masks, .timing_specs = &ad7380_timing, .max_conversion_rate_hz = 4 * MEGA, @@ -652,6 +656,7 @@ static const struct ad7380_chip_info ad7384_chip_info = { .num_supplies = ARRAY_SIZE(ad7380_supplies), .vcm_supplies = ad7380_2_channel_vcm_supplies, .num_vcm_supplies = ARRAY_SIZE(ad7380_2_channel_vcm_supplies), + .internal_ref_mv = AD7380_INTERNAL_REF_MV, .available_scan_masks = ad7380_2_channel_scan_masks, .timing_specs = &ad7380_timing, .max_conversion_rate_hz = 4 * MEGA, @@ -665,6 +670,7 @@ static const struct ad7380_chip_info ad7386_chip_info = { .num_simult_channels = 2, .supplies = ad7380_supplies, .num_supplies = ARRAY_SIZE(ad7380_supplies), + .internal_ref_mv = AD7380_INTERNAL_REF_MV, .has_mux = true, .available_scan_masks = ad7380_2x2_channel_scan_masks, .timing_specs = &ad7380_timing, @@ -679,6 +685,7 @@ static const struct ad7380_chip_info ad7387_chip_info = { .num_simult_channels = 2, .supplies = ad7380_supplies, .num_supplies = ARRAY_SIZE(ad7380_supplies), + .internal_ref_mv = AD7380_INTERNAL_REF_MV, .has_mux = true, .available_scan_masks = ad7380_2x2_channel_scan_masks, .timing_specs = &ad7380_timing, @@ -693,6 +700,7 @@ static const struct ad7380_chip_info ad7388_chip_info = { .num_simult_channels = 2, .supplies = ad7380_supplies, .num_supplies = ARRAY_SIZE(ad7380_supplies), + .internal_ref_mv = AD7380_INTERNAL_REF_MV, .has_mux = true, .available_scan_masks = ad7380_2x2_channel_scan_masks, .timing_specs = &ad7380_timing, @@ -721,6 +729,7 @@ static const struct ad7380_chip_info ad7381_4_chip_info = { .num_simult_channels = 4, .supplies = ad7380_supplies, .num_supplies = ARRAY_SIZE(ad7380_supplies), + .internal_ref_mv = AD7380_INTERNAL_REF_MV, .available_scan_masks = ad7380_4_channel_scan_masks, .timing_specs = &ad7380_4_timing, .max_conversion_rate_hz = 4 * MEGA, @@ -734,6 +743,7 @@ static const struct ad7380_chip_info ad7383_4_chip_info = { .num_simult_channels = 4, .supplies = ad7380_supplies, .num_supplies = ARRAY_SIZE(ad7380_supplies), + .internal_ref_mv = AD7380_INTERNAL_REF_MV, .vcm_supplies = ad7380_4_channel_vcm_supplies, .num_vcm_supplies = ARRAY_SIZE(ad7380_4_channel_vcm_supplies), .available_scan_masks = ad7380_4_channel_scan_masks, @@ -749,6 +759,7 @@ static const struct ad7380_chip_info ad7384_4_chip_info = { .num_simult_channels = 4, .supplies = ad7380_supplies, .num_supplies = ARRAY_SIZE(ad7380_supplies), + .internal_ref_mv = AD7380_INTERNAL_REF_MV, .vcm_supplies = ad7380_4_channel_vcm_supplies, .num_vcm_supplies = ARRAY_SIZE(ad7380_4_channel_vcm_supplies), .available_scan_masks = ad7380_4_channel_scan_masks, @@ -764,6 +775,7 @@ static const struct ad7380_chip_info ad7386_4_chip_info = { .num_simult_channels = 4, .supplies = ad7380_supplies, .num_supplies = ARRAY_SIZE(ad7380_supplies), + .internal_ref_mv = AD7380_INTERNAL_REF_MV, .has_mux = true, .available_scan_masks = ad7380_2x4_channel_scan_masks, .timing_specs = &ad7380_4_timing, @@ -778,6 +790,7 @@ static const struct ad7380_chip_info ad7387_4_chip_info = { .num_simult_channels = 4, .supplies = ad7380_supplies, .num_supplies = ARRAY_SIZE(ad7380_supplies), + .internal_ref_mv = AD7380_INTERNAL_REF_MV, .has_mux = true, .available_scan_masks = ad7380_2x4_channel_scan_masks, .timing_specs = &ad7380_4_timing, @@ -792,6 +805,7 @@ static const struct ad7380_chip_info ad7388_4_chip_info = { .num_simult_channels = 4, .supplies = ad7380_supplies, .num_supplies = ARRAY_SIZE(ad7380_supplies), + .internal_ref_mv = AD7380_INTERNAL_REF_MV, .has_mux = true, .available_scan_masks = ad7380_2x4_channel_scan_masks, .timing_specs = &ad7380_4_timing, @@ -807,6 +821,7 @@ static const struct ad7380_chip_info adaq4370_4_chip_info = { .supplies = adaq4380_supplies, .num_supplies = ARRAY_SIZE(adaq4380_supplies), .internal_ref_only = true, + .internal_ref_mv = ADAQ4380_INTERNAL_REF_MV, .has_hardware_gain = true, .available_scan_masks = ad7380_4_channel_scan_masks, .timing_specs = &ad7380_4_timing, @@ -822,6 +837,7 @@ static const struct ad7380_chip_info adaq4380_4_chip_info = { .supplies = adaq4380_supplies, .num_supplies = ARRAY_SIZE(adaq4380_supplies), .internal_ref_only = true, + .internal_ref_mv = ADAQ4380_INTERNAL_REF_MV, .has_hardware_gain = true, .available_scan_masks = ad7380_4_channel_scan_masks, .timing_specs = &ad7380_4_timing, @@ -837,6 +853,7 @@ static const struct ad7380_chip_info adaq4381_4_chip_info = { .supplies = adaq4380_supplies, .num_supplies = ARRAY_SIZE(adaq4380_supplies), .internal_ref_only = true, + .internal_ref_mv = ADAQ4380_INTERNAL_REF_MV, .has_hardware_gain = true, .available_scan_masks = ad7380_4_channel_scan_masks, .timing_specs = &ad7380_4_timing, @@ -1855,7 +1872,7 @@ static int ad7380_probe(struct spi_device *spi) * in bulk_get_enable(). */ - st->vref_mv = ADAQ4380_INTERNAL_REF_MV; + st->vref_mv = st->chip_info->internal_ref_mv; /* these chips don't have a register bit for this */ external_ref_en = false; @@ -1880,7 +1897,8 @@ static int ad7380_probe(struct spi_device *spi) "Failed to get refio regulator\n"); external_ref_en = ret != -ENODEV; - st->vref_mv = external_ref_en ? ret / 1000 : AD7380_INTERNAL_REF_MV; + st->vref_mv = external_ref_en ? ret / 1000 + : st->chip_info->internal_ref_mv; } if (st->chip_info->num_vcm_supplies > ARRAY_SIZE(st->vcm_mv)) -- cgit v1.2.3 From 98a002674856f9452ffe225b6d61d848d1c0e79d Mon Sep 17 00:00:00 2001 From: David Lechner Date: Tue, 1 Apr 2025 17:50:11 -0500 Subject: iio: adc: ad7380: add ad7389-4 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add chip info for AD7389-4 to the ad7380 driver. This is essentially the same as ad7380-4 except that it is internal- reference-only instead of external-reference-only. Signed-off-by: David Lechner Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250401-iio-ad7380-add-ad7389-4-v1-4-23d2568aa24f@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7380.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/iio/adc/ad7380.c b/drivers/iio/adc/ad7380.c index e5cd11fd7b10..190ab411739f 100644 --- a/drivers/iio/adc/ad7380.c +++ b/drivers/iio/adc/ad7380.c @@ -13,6 +13,7 @@ * ad7381-4 : https://www.analog.com/media/en/technical-documentation/data-sheets/ad7381-4.pdf * ad7383/4-4 : https://www.analog.com/media/en/technical-documentation/data-sheets/ad7383-4-ad7384-4.pdf * ad7386/7/8-4 : https://www.analog.com/media/en/technical-documentation/data-sheets/ad7386-4-7387-4-7388-4.pdf + * ad7389-4 : https://www.analog.com/media/en/technical-documentation/data-sheets/ad7389-4.pdf * adaq4370-4 : https://www.analog.com/media/en/technical-documentation/data-sheets/adaq4370-4.pdf * adaq4380-4 : https://www.analog.com/media/en/technical-documentation/data-sheets/adaq4380-4.pdf * adaq4381-4 : https://www.analog.com/media/en/technical-documentation/data-sheets/adaq4381-4.pdf @@ -812,6 +813,21 @@ static const struct ad7380_chip_info ad7388_4_chip_info = { .max_conversion_rate_hz = 4 * MEGA, }; +static const struct ad7380_chip_info ad7389_4_chip_info = { + .name = "ad7389-4", + .channels = ad7380_4_channels, + .offload_channels = ad7380_4_offload_channels, + .num_channels = ARRAY_SIZE(ad7380_4_channels), + .num_simult_channels = 4, + .supplies = ad7380_supplies, + .num_supplies = ARRAY_SIZE(ad7380_supplies), + .internal_ref_only = true, + .internal_ref_mv = AD7380_INTERNAL_REF_MV, + .available_scan_masks = ad7380_4_channel_scan_masks, + .timing_specs = &ad7380_4_timing, + .max_conversion_rate_hz = 4 * MEGA, +}; + static const struct ad7380_chip_info adaq4370_4_chip_info = { .name = "adaq4370-4", .channels = adaq4380_4_channels, @@ -2051,6 +2067,7 @@ static const struct of_device_id ad7380_of_match_table[] = { { .compatible = "adi,ad7386-4", .data = &ad7386_4_chip_info }, { .compatible = "adi,ad7387-4", .data = &ad7387_4_chip_info }, { .compatible = "adi,ad7388-4", .data = &ad7388_4_chip_info }, + { .compatible = "adi,ad7389-4", .data = &ad7389_4_chip_info }, { .compatible = "adi,adaq4370-4", .data = &adaq4370_4_chip_info }, { .compatible = "adi,adaq4380-4", .data = &adaq4380_4_chip_info }, { .compatible = "adi,adaq4381-4", .data = &adaq4381_4_chip_info }, @@ -2072,6 +2089,7 @@ static const struct spi_device_id ad7380_id_table[] = { { "ad7386-4", (kernel_ulong_t)&ad7386_4_chip_info }, { "ad7387-4", (kernel_ulong_t)&ad7387_4_chip_info }, { "ad7388-4", (kernel_ulong_t)&ad7388_4_chip_info }, + { "ad7389-4", (kernel_ulong_t)&ad7389_4_chip_info }, { "adaq4370-4", (kernel_ulong_t)&adaq4370_4_chip_info }, { "adaq4380-4", (kernel_ulong_t)&adaq4380_4_chip_info }, { "adaq4381-4", (kernel_ulong_t)&adaq4381_4_chip_info }, -- cgit v1.2.3 From 81a481f6256414b4e1ee2b014fc5f8e5e9d1678b Mon Sep 17 00:00:00 2001 From: David Lechner Date: Tue, 1 Apr 2025 17:50:12 -0500 Subject: Documentation: iio: ad7380: add AD7389-4 Document support for AD7389-4 and it's quirks. Signed-off-by: David Lechner Link: https://patch.msgid.link/20250401-iio-ad7380-add-ad7389-4-v1-5-23d2568aa24f@baylibre.com Signed-off-by: Jonathan Cameron --- Documentation/iio/ad7380.rst | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/Documentation/iio/ad7380.rst b/Documentation/iio/ad7380.rst index 24a92a1c4371..d51f9ee3e939 100644 --- a/Documentation/iio/ad7380.rst +++ b/Documentation/iio/ad7380.rst @@ -27,6 +27,7 @@ The following chips are supported by this driver: * `AD7386-4 `_ * `AD7387-4 `_ * `AD7388-4 `_ +* `AD7389-4 `_ * `ADAQ4370-4 `_ * `ADAQ4380-4 `_ * `ADAQ4381-4 `_ @@ -50,6 +51,12 @@ ad7380-4 ad7380-4 supports only an external reference voltage (2.5V to 3.3V). It must be declared in the device tree as ``refin-supply``. +ad7389-4 +~~~~~~~~ + +ad7389-4 supports only an internal reference voltage. ``refin-supply`` and +``refio-supply`` properties are both omitted in this case. + ADAQ devices ~~~~~~~~~~~~ -- cgit v1.2.3 From 81fe5529e812d7176ff1e48783978504239a990e Mon Sep 17 00:00:00 2001 From: Angelo Dureghello Date: Thu, 3 Apr 2025 18:19:04 +0200 Subject: dt-bindings: iio: adc: adi,ad7606: add SPI offload properties Add #trigger-source-cells property to allow the BUSY output to be used as a SPI offload trigger source to indicate when a sample is ready to be read. Macros are added to adi,ad7606.h for the cell values to help with readability since they are arbitrary values. Signed-off-by: Angelo Dureghello Reviewed-by: Rob Herring (Arm) Reviewed-by: David Lechner Link: https://patch.msgid.link/20250403-wip-bl-spi-offload-ad7606-v1-1-1b00cb638b12@baylibre.com Signed-off-by: Jonathan Cameron --- Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml | 8 ++++++++ include/dt-bindings/iio/adc/adi,ad7606.h | 9 +++++++++ 2 files changed, 17 insertions(+) create mode 100644 include/dt-bindings/iio/adc/adi,ad7606.h diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml index 52d3f1ce3367..29f12d650442 100644 --- a/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml @@ -45,6 +45,14 @@ properties: "#size-cells": const: 0 + '#trigger-source-cells': + description: | + Cell indicates the output signal: 0 = BUSY, 1 = FIRSTDATA. + + For convenience, macros for these values are available in + dt-bindings/iio/adc/adi,ad7606.h. + const: 1 + # According to the datasheet, "Data is clocked in from SDI on the falling # edge of SCLK, while data is clocked out on DOUTA on the rising edge of # SCLK". Also, even if not stated textually in the datasheet, it is made diff --git a/include/dt-bindings/iio/adc/adi,ad7606.h b/include/dt-bindings/iio/adc/adi,ad7606.h new file mode 100644 index 000000000000..f38a6d72b6dc --- /dev/null +++ b/include/dt-bindings/iio/adc/adi,ad7606.h @@ -0,0 +1,9 @@ +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */ + +#ifndef _DT_BINDINGS_ADI_AD7606_H +#define _DT_BINDINGS_ADI_AD7606_H + +#define AD7606_TRIGGER_EVENT_BUSY 0 +#define AD7606_TRIGGER_EVENT_FRSTDATA 1 + +#endif /* _DT_BINDINGS_ADI_AD7606_H */ -- cgit v1.2.3 From 89e1f95a61e54a5d74e819d311920e8ac002213b Mon Sep 17 00:00:00 2001 From: Angelo Dureghello Date: Thu, 3 Apr 2025 18:19:05 +0200 Subject: doc: iio: ad7606: describe offload support Add a section to the ad7606 documentation describing how to use the driver with SPI offloading. Signed-off-by: Angelo Dureghello Reviewed-by: David Lechner Link: https://patch.msgid.link/20250403-wip-bl-spi-offload-ad7606-v1-2-1b00cb638b12@baylibre.com Signed-off-by: Jonathan Cameron --- Documentation/iio/ad7606.rst | 45 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) diff --git a/Documentation/iio/ad7606.rst b/Documentation/iio/ad7606.rst index 930199e03c67..5e02516bab40 100644 --- a/Documentation/iio/ad7606.rst +++ b/Documentation/iio/ad7606.rst @@ -26,6 +26,35 @@ SPI wiring modes These ADCs can output data on several SDO lines (1/2/4/8). The driver currently supports only 1 SDO line. +SPI offload wiring +------------------ +When used with a SPI offload, the supported wiring configuration is: + +.. code-block:: + + +-------------+ +-------------+ + | BUSY |-------->| TRIGGER | + | CS |<--------| CS | + | | | | + | ADC | | SPI | + | | | | + | SDI |<--------| SDO | + | DOUTA |-------->| SDI | + | SCLK |<--------| SCLK | + | | | | + | | +-------------+ + | CONVST |<--------| PWM | + +-------------+ +-------------+ + +In this case, the ``pwms`` property is required. +The ``#trigger-source-cells = <1>`` property is also required to connect back +to the SPI offload. The SPI offload will have ``trigger-sources`` property +with a cell to indicate the busy signal: +``<&ad7606 AD4695_TRIGGER_EVENT_BUSY>``. + +.. seealso:: `SPI offload support`_ + + Parallel wiring mode -------------------- @@ -123,6 +152,22 @@ Unimplemented features - CRC indication - Calibration +SPI offload support +=================== + +To be able to achieve the maximum sample rate, the driver can be used with the +`AXI SPI Engine`_ to provide SPI offload support. + +.. _AXI SPI Engine: https://analogdevicesinc.github.io/hdl/library/spi_engine/index.html + +When SPI offload is being used, some attributes will be different. + +* ``trigger`` directory is removed. +* ``sampling_frequency`` attribute is added for setting the sample rate. +* ``timestamp`` channel is removed. +* Buffer data format may be different compared to when offload is not used, + e.g. the ``in_voltage0_type`` attribute. + Device buffers ============== -- cgit v1.2.3 From e96d35faf357743d4a46ae4ba2da98cba0930b83 Mon Sep 17 00:00:00 2001 From: Angelo Dureghello Date: Thu, 3 Apr 2025 18:19:06 +0200 Subject: iio: adc: ad7606: add SPI offload support Add SPI offload support for this family. Signed-off-by: Angelo Dureghello Reviewed-by: David Lechner Link: https://patch.msgid.link/20250403-wip-bl-spi-offload-ad7606-v1-3-1b00cb638b12@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/Kconfig | 2 + drivers/iio/adc/ad7606.c | 54 ++++++++--- drivers/iio/adc/ad7606.h | 12 +++ drivers/iio/adc/ad7606_spi.c | 211 +++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 265 insertions(+), 14 deletions(-) diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig index 5741de4747bb..636469392945 100644 --- a/drivers/iio/adc/Kconfig +++ b/drivers/iio/adc/Kconfig @@ -289,6 +289,8 @@ config AD7606_IFACE_SPI tristate "Analog Devices AD7606 ADC driver with spi interface support" depends on SPI select AD7606 + select IIO_BUFFER_DMAENGINE + select SPI_OFFLOAD help Say yes here to build spi interface support for Analog Devices: ad7605-4, ad7606, ad7606-6, ad7606-4 analog to digital converters (ADC). diff --git a/drivers/iio/adc/ad7606.c b/drivers/iio/adc/ad7606.c index 60a4e599af1f..d36b2e212a08 100644 --- a/drivers/iio/adc/ad7606.c +++ b/drivers/iio/adc/ad7606.c @@ -138,6 +138,7 @@ const struct ad7606_chip_info ad7606_6_info = { .oversampling_avail = ad7606_oversampling_avail, .oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail), .scale_setup_cb = ad7606_16bit_chan_scale_setup, + .offload_storagebits = 32, }; EXPORT_SYMBOL_NS_GPL(ad7606_6_info, "IIO_AD7606"); @@ -149,6 +150,7 @@ const struct ad7606_chip_info ad7606_4_info = { .oversampling_avail = ad7606_oversampling_avail, .oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail), .scale_setup_cb = ad7606_16bit_chan_scale_setup, + .offload_storagebits = 32, }; EXPORT_SYMBOL_NS_GPL(ad7606_4_info, "IIO_AD7606"); @@ -161,6 +163,7 @@ const struct ad7606_chip_info ad7606b_info = { .oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail), .scale_setup_cb = ad7606_16bit_chan_scale_setup, .sw_setup_cb = ad7606b_sw_mode_setup, + .offload_storagebits = 32, }; EXPORT_SYMBOL_NS_GPL(ad7606b_info, "IIO_AD7606"); @@ -173,6 +176,7 @@ const struct ad7606_chip_info ad7606c_16_info = { .oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail), .scale_setup_cb = ad7606c_16bit_chan_scale_setup, .sw_setup_cb = ad7606b_sw_mode_setup, + .offload_storagebits = 32, }; EXPORT_SYMBOL_NS_GPL(ad7606c_16_info, "IIO_AD7606"); @@ -184,6 +188,7 @@ const struct ad7606_chip_info ad7607_info = { .oversampling_avail = ad7606_oversampling_avail, .oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail), .scale_setup_cb = ad7607_chan_scale_setup, + .offload_storagebits = 32, }; EXPORT_SYMBOL_NS_GPL(ad7607_info, "IIO_AD7606"); @@ -195,6 +200,7 @@ const struct ad7606_chip_info ad7608_info = { .oversampling_avail = ad7606_oversampling_avail, .oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail), .scale_setup_cb = ad7608_chan_scale_setup, + .offload_storagebits = 32, }; EXPORT_SYMBOL_NS_GPL(ad7608_info, "IIO_AD7606"); @@ -206,6 +212,7 @@ const struct ad7606_chip_info ad7609_info = { .oversampling_avail = ad7606_oversampling_avail, .oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail), .scale_setup_cb = ad7609_chan_scale_setup, + .offload_storagebits = 32, }; EXPORT_SYMBOL_NS_GPL(ad7609_info, "IIO_AD7606"); @@ -218,6 +225,7 @@ const struct ad7606_chip_info ad7606c_18_info = { .oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail), .scale_setup_cb = ad7606c_18bit_chan_scale_setup, .sw_setup_cb = ad7606b_sw_mode_setup, + .offload_storagebits = 32, }; EXPORT_SYMBOL_NS_GPL(ad7606c_18_info, "IIO_AD7606"); @@ -232,6 +240,7 @@ const struct ad7606_chip_info ad7616_info = { .os_req_reset = true, .scale_setup_cb = ad7606_16bit_chan_scale_setup, .sw_setup_cb = ad7616_sw_mode_setup, + .offload_storagebits = 16, }; EXPORT_SYMBOL_NS_GPL(ad7616_info, "IIO_AD7606"); @@ -514,7 +523,7 @@ static int ad7606_pwm_set_high(struct ad7606_state *st) return ret; } -static int ad7606_pwm_set_low(struct ad7606_state *st) +int ad7606_pwm_set_low(struct ad7606_state *st) { struct pwm_state cnvst_pwm_state; int ret; @@ -527,8 +536,9 @@ static int ad7606_pwm_set_low(struct ad7606_state *st) return ret; } +EXPORT_SYMBOL_NS_GPL(ad7606_pwm_set_low, "IIO_AD7606"); -static int ad7606_pwm_set_swing(struct ad7606_state *st) +int ad7606_pwm_set_swing(struct ad7606_state *st) { struct pwm_state cnvst_pwm_state; @@ -538,6 +548,7 @@ static int ad7606_pwm_set_swing(struct ad7606_state *st) return pwm_apply_might_sleep(st->cnvst_pwm, &cnvst_pwm_state); } +EXPORT_SYMBOL_NS_GPL(ad7606_pwm_set_swing, "IIO_AD7606"); static bool ad7606_pwm_is_swinging(struct ad7606_state *st) { @@ -626,7 +637,7 @@ static int ad7606_scan_direct(struct iio_dev *indio_dev, unsigned int ch, * will not happen because IIO_CHAN_INFO_RAW is not supported for the backend. * TODO: Add support for reading a single value when the backend is used. */ - if (!st->back) { + if (st->trig) { ret = wait_for_completion_timeout(&st->completion, msecs_to_jiffies(1000)); if (!ret) { @@ -634,7 +645,12 @@ static int ad7606_scan_direct(struct iio_dev *indio_dev, unsigned int ch, goto error_ret; } } else { - fsleep(1); + /* + * If the BUSY interrupt is not available, wait enough time for + * the longest possible conversion (max for the whole family is + * around 350us). + */ + fsleep(400); } ret = ad7606_read_samples(st); @@ -698,10 +714,6 @@ static int ad7606_read_raw(struct iio_dev *indio_dev, *val = st->oversampling; return IIO_VAL_INT; case IIO_CHAN_INFO_SAMP_FREQ: - /* - * TODO: return the real frequency intead of the requested one once - * pwm_get_state_hw comes upstream. - */ pwm_get_state(st->cnvst_pwm, &cnvst_pwm_state); *val = DIV_ROUND_CLOSEST_ULL(NSEC_PER_SEC, cnvst_pwm_state.period); return IIO_VAL_INT; @@ -1196,7 +1208,7 @@ static int ad7606_probe_channels(struct iio_dev *indio_dev) bool slow_bus; int ret, i; - slow_bus = !st->bops->iio_backend_config; + slow_bus = !(st->bops->iio_backend_config || st->offload_en); indio_dev->num_channels = st->chip_info->num_adc_channels; /* Slow buses also get 1 more channel for soft timestamp */ @@ -1217,7 +1229,14 @@ static int ad7606_probe_channels(struct iio_dev *indio_dev) chan->scan_index = i; chan->scan_type.sign = 's'; chan->scan_type.realbits = st->chip_info->bits; - chan->scan_type.storagebits = st->chip_info->bits > 16 ? 32 : 16; + /* + * If in SPI offload mode, storagebits are set based + * on the spi-engine hw implementation. + */ + chan->scan_type.storagebits = st->offload_en ? + st->chip_info->offload_storagebits : + (st->chip_info->bits > 16 ? 32 : 16); + chan->scan_type.endianness = IIO_CPU; if (indio_dev->modes & INDIO_DIRECT_MODE) @@ -1335,6 +1354,13 @@ int ad7606_probe(struct device *dev, int irq, void __iomem *base_address, indio_dev->modes = st->bops->iio_backend_config ? 0 : INDIO_DIRECT_MODE; indio_dev->name = chip_info->name; + /* Using spi-engine with offload support ? */ + if (st->bops->offload_config) { + ret = st->bops->offload_config(dev, indio_dev); + if (ret) + return ret; + } + ret = ad7606_probe_channels(indio_dev); if (ret) return ret; @@ -1350,7 +1376,7 @@ int ad7606_probe(struct device *dev, int irq, void __iomem *base_address, } /* If convst pin is not defined, setup PWM. */ - if (!st->gpio_convst) { + if (!st->gpio_convst || st->offload_en) { st->cnvst_pwm = devm_pwm_get(dev, NULL); if (IS_ERR(st->cnvst_pwm)) return PTR_ERR(st->cnvst_pwm); @@ -1389,8 +1415,7 @@ int ad7606_probe(struct device *dev, int irq, void __iomem *base_address, return ret; indio_dev->setup_ops = &ad7606_backend_buffer_ops; - } else { - + } else if (!st->offload_en) { /* Reserve the PWM use only for backend (force gpio_convst definition) */ if (!st->gpio_convst) return dev_err_probe(dev, -EINVAL, @@ -1428,7 +1453,8 @@ int ad7606_probe(struct device *dev, int irq, void __iomem *base_address, st->write_scale = ad7606_write_scale_hw; st->write_os = ad7606_write_os_hw; - if (st->sw_mode_en) { + /* Offload needs 1 DOUT line, applying this setting in sw_setup_cb. */ + if (st->sw_mode_en || st->offload_en) { indio_dev->info = &ad7606_info_sw_mode; st->chip_info->sw_setup_cb(indio_dev); } diff --git a/drivers/iio/adc/ad7606.h b/drivers/iio/adc/ad7606.h index f0b262fb4554..89d49551eaf5 100644 --- a/drivers/iio/adc/ad7606.h +++ b/drivers/iio/adc/ad7606.h @@ -60,6 +60,7 @@ typedef int (*ad7606_sw_setup_cb_t)(struct iio_dev *indio_dev); * @os_req_reset: some devices require a reset to update oversampling * @init_delay_ms: required delay in milliseconds for initialization * after a restart + * @offload_storagebits: storage bits used by the offload hw implementation */ struct ad7606_chip_info { unsigned int max_samplerate; @@ -72,6 +73,7 @@ struct ad7606_chip_info { unsigned int oversampling_num; bool os_req_reset; unsigned long init_delay_ms; + u8 offload_storagebits; }; /** @@ -118,6 +120,8 @@ struct ad7606_chan_scale { * @trig: The IIO trigger associated with the device. * @completion: completion to indicate end of conversion * @data: buffer for reading data from the device + * @offload_en: SPI offload enabled + * @bus_data: bus-specific variables * @d16: be16 buffer for reading data from the device */ struct ad7606_state { @@ -145,6 +149,9 @@ struct ad7606_state { struct iio_trigger *trig; struct completion completion; + bool offload_en; + void *bus_data; + /* * DMA (thus cache coherency maintenance) may require the * transfer buffers to live in their own cache lines. @@ -165,6 +172,8 @@ struct ad7606_state { * @read_block: function pointer for reading blocks of data * @sw_mode_config: pointer to a function which configured the device * for software mode + * @offload_config: function pointer for configuring offload support, + * where any * @reg_read: function pointer for reading spi register * @reg_write: function pointer for writing spi register * @update_scan_mode: function pointer for handling the calls to iio_info's @@ -174,6 +183,7 @@ struct ad7606_state { struct ad7606_bus_ops { /* more methods added in future? */ int (*iio_backend_config)(struct device *dev, struct iio_dev *indio_dev); + int (*offload_config)(struct device *dev, struct iio_dev *indio_dev); int (*read_block)(struct device *dev, int num, void *data); int (*sw_mode_config)(struct iio_dev *indio_dev); int (*reg_read)(struct ad7606_state *st, unsigned int addr); @@ -199,6 +209,8 @@ int ad7606_probe(struct device *dev, int irq, void __iomem *base_address, const struct ad7606_bus_ops *bops); int ad7606_reset(struct ad7606_state *st); +int ad7606_pwm_set_swing(struct ad7606_state *st); +int ad7606_pwm_set_low(struct ad7606_state *st); extern const struct ad7606_chip_info ad7605_4_info; extern const struct ad7606_chip_info ad7606_8_info; diff --git a/drivers/iio/adc/ad7606_spi.c b/drivers/iio/adc/ad7606_spi.c index b2b975fb7fea..997be483ebb9 100644 --- a/drivers/iio/adc/ad7606_spi.c +++ b/drivers/iio/adc/ad7606_spi.c @@ -6,15 +6,31 @@ */ #include +#include #include +#include +#include +#include #include #include +#include +#include #include + +#include + #include "ad7606.h" #define MAX_SPI_FREQ_HZ 23500000 /* VDRIVE above 4.75 V */ +struct spi_bus_data { + struct spi_offload *offload; + struct spi_offload_trigger *offload_trigger; + struct spi_transfer offload_xfer; + struct spi_message offload_msg; +}; + static u16 ad7616_spi_rd_wr_cmd(int addr, char is_write_op) { /* @@ -125,19 +141,211 @@ static int ad7606b_sw_mode_config(struct iio_dev *indio_dev) AD7606_SINGLE_DOUT); } +static const struct spi_offload_config ad7606_spi_offload_config = { + .capability_flags = SPI_OFFLOAD_CAP_TRIGGER | + SPI_OFFLOAD_CAP_RX_STREAM_DMA, +}; + +static int ad7606_spi_offload_buffer_postenable(struct iio_dev *indio_dev) +{ + const struct iio_scan_type *scan_type; + struct ad7606_state *st = iio_priv(indio_dev); + struct spi_bus_data *bus_data = st->bus_data; + struct spi_transfer *xfer = &bus_data->offload_xfer; + struct spi_device *spi = to_spi_device(st->dev); + struct spi_offload_trigger_config config = { + .type = SPI_OFFLOAD_TRIGGER_DATA_READY, + }; + int ret; + + scan_type = &indio_dev->channels[0].scan_type; + + xfer->bits_per_word = scan_type->realbits; + xfer->offload_flags = SPI_OFFLOAD_XFER_RX_STREAM; + /* + * Using SPI offload, storagebits are related to the spi-engine + * hw implementation, can be 16 or 32, so can't be used to compute + * struct spi_transfer.len. Using realbits instead. + */ + xfer->len = (scan_type->realbits > 16 ? 4 : 2) * + st->chip_info->num_adc_channels; + + spi_message_init_with_transfers(&bus_data->offload_msg, xfer, 1); + bus_data->offload_msg.offload = bus_data->offload; + + ret = spi_optimize_message(spi, &bus_data->offload_msg); + if (ret) { + dev_err(st->dev, "failed to prepare offload, err: %d\n", ret); + return ret; + } + + ret = spi_offload_trigger_enable(bus_data->offload, + bus_data->offload_trigger, + &config); + if (ret) + goto err_unoptimize_message; + + ret = ad7606_pwm_set_swing(st); + if (ret) + goto err_offload_exit_conversion_mode; + + return 0; + +err_offload_exit_conversion_mode: + spi_offload_trigger_disable(bus_data->offload, + bus_data->offload_trigger); + +err_unoptimize_message: + spi_unoptimize_message(&bus_data->offload_msg); + + return ret; +} + +static int ad7606_spi_offload_buffer_predisable(struct iio_dev *indio_dev) +{ + struct ad7606_state *st = iio_priv(indio_dev); + struct spi_bus_data *bus_data = st->bus_data; + int ret; + + ret = ad7606_pwm_set_low(st); + if (ret) + return ret; + + spi_offload_trigger_disable(bus_data->offload, + bus_data->offload_trigger); + spi_unoptimize_message(&bus_data->offload_msg); + + return 0; +} + +static const struct iio_buffer_setup_ops ad7606_offload_buffer_setup_ops = { + .postenable = ad7606_spi_offload_buffer_postenable, + .predisable = ad7606_spi_offload_buffer_predisable, +}; + +static bool ad7606_spi_offload_trigger_match( + struct spi_offload_trigger *trigger, + enum spi_offload_trigger_type type, + u64 *args, u32 nargs) +{ + if (type != SPI_OFFLOAD_TRIGGER_DATA_READY) + return false; + + /* + * Requires 1 arg: + * args[0] is the trigger event. + */ + if (nargs != 1 || args[0] != AD7606_TRIGGER_EVENT_BUSY) + return false; + + return true; +} + +static int ad7606_spi_offload_trigger_request( + struct spi_offload_trigger *trigger, + enum spi_offload_trigger_type type, + u64 *args, u32 nargs) +{ + /* Should already be validated by match, but just in case. */ + if (nargs != 1) + return -EINVAL; + + return 0; +} + +static int ad7606_spi_offload_trigger_validate( + struct spi_offload_trigger *trigger, + struct spi_offload_trigger_config *config) +{ + if (config->type != SPI_OFFLOAD_TRIGGER_DATA_READY) + return -EINVAL; + + return 0; +} + +static const struct spi_offload_trigger_ops ad7606_offload_trigger_ops = { + .match = ad7606_spi_offload_trigger_match, + .request = ad7606_spi_offload_trigger_request, + .validate = ad7606_spi_offload_trigger_validate, +}; + +static int ad7606_spi_offload_probe(struct device *dev, + struct iio_dev *indio_dev) +{ + struct ad7606_state *st = iio_priv(indio_dev); + struct spi_device *spi = to_spi_device(dev); + struct spi_bus_data *bus_data; + struct dma_chan *rx_dma; + struct spi_offload_trigger_info trigger_info = { + .fwnode = dev_fwnode(dev), + .ops = &ad7606_offload_trigger_ops, + .priv = st, + }; + int ret; + + bus_data = devm_kzalloc(dev, sizeof(*bus_data), GFP_KERNEL); + if (!bus_data) + return -ENOMEM; + st->bus_data = bus_data; + + bus_data->offload = devm_spi_offload_get(dev, spi, + &ad7606_spi_offload_config); + ret = PTR_ERR_OR_ZERO(bus_data->offload); + if (ret && ret != -ENODEV) + return dev_err_probe(dev, ret, "failed to get SPI offload\n"); + /* Allow main ad7606_probe function to continue. */ + if (ret == -ENODEV) + return 0; + + ret = devm_spi_offload_trigger_register(dev, &trigger_info); + if (ret) + return dev_err_probe(dev, ret, + "failed to register offload trigger\n"); + + bus_data->offload_trigger = devm_spi_offload_trigger_get(dev, + bus_data->offload, SPI_OFFLOAD_TRIGGER_DATA_READY); + if (IS_ERR(bus_data->offload_trigger)) + return dev_err_probe(dev, PTR_ERR(bus_data->offload_trigger), + "failed to get offload trigger\n"); + + /* TODO: PWM setup should be ok, done for the backend. PWM mutex ? */ + rx_dma = devm_spi_offload_rx_stream_request_dma_chan(dev, + bus_data->offload); + if (IS_ERR(rx_dma)) + return dev_err_probe(dev, PTR_ERR(rx_dma), + "failed to get offload RX DMA\n"); + + ret = devm_iio_dmaengine_buffer_setup_with_handle(dev, indio_dev, + rx_dma, IIO_BUFFER_DIRECTION_IN); + if (ret) + return dev_err_probe(dev, ret, + "failed to setup offload RX DMA\n"); + + /* Use offload ops. */ + indio_dev->setup_ops = &ad7606_offload_buffer_setup_ops; + + st->offload_en = true; + + return 0; +} + static const struct ad7606_bus_ops ad7606_spi_bops = { + .offload_config = ad7606_spi_offload_probe, .read_block = ad7606_spi_read_block, }; static const struct ad7606_bus_ops ad7607_spi_bops = { + .offload_config = ad7606_spi_offload_probe, .read_block = ad7606_spi_read_block14to16, }; static const struct ad7606_bus_ops ad7608_spi_bops = { + .offload_config = ad7606_spi_offload_probe, .read_block = ad7606_spi_read_block18to32, }; static const struct ad7606_bus_ops ad7616_spi_bops = { + .offload_config = ad7606_spi_offload_probe, .read_block = ad7606_spi_read_block, .reg_read = ad7606_spi_reg_read, .reg_write = ad7606_spi_reg_write, @@ -145,6 +353,7 @@ static const struct ad7606_bus_ops ad7616_spi_bops = { }; static const struct ad7606_bus_ops ad7606b_spi_bops = { + .offload_config = ad7606_spi_offload_probe, .read_block = ad7606_spi_read_block, .reg_read = ad7606_spi_reg_read, .reg_write = ad7606_spi_reg_write, @@ -153,6 +362,7 @@ static const struct ad7606_bus_ops ad7606b_spi_bops = { }; static const struct ad7606_bus_ops ad7606c_18_spi_bops = { + .offload_config = ad7606_spi_offload_probe, .read_block = ad7606_spi_read_block18to32, .reg_read = ad7606_spi_reg_read, .reg_write = ad7606_spi_reg_write, @@ -270,3 +480,4 @@ MODULE_AUTHOR("Michael Hennerich "); MODULE_DESCRIPTION("Analog Devices AD7606 ADC"); MODULE_LICENSE("GPL v2"); MODULE_IMPORT_NS("IIO_AD7606"); +MODULE_IMPORT_NS("IIO_DMAENGINE_BUFFER"); -- cgit v1.2.3 From 2a44c3ed8063e9bb0254b3bbcd13a853ef80cbed Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 6 Apr 2025 16:31:19 +0100 Subject: MAINTAINERS: IIO: Update reviewers for the subsystem Lars-Peter has not been active in IIO reviewing for some time. Without David, Nuno and Andy, along with many others who review IIO patches, I would not be able to keep up with the rate of change and would have become a bottleneck to development. Hence update the MAINTAINERS entry to more accurately reflect reality. This is not intended to give the 3 of them any more work or to oblige them to review any particular series, so if there are any series waiting a long time continue to poke me via the list. Acked-by: Andy Shevchenko Acked-by: Lars-Peter Clausen Acked-by: David Lechner Link: https://patch.msgid.link/20250406153120.2129133-1-jic23@kernel.org Signed-off-by: Jonathan Cameron --- MAINTAINERS | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/MAINTAINERS b/MAINTAINERS index 82f71f0e6143..030d90d38341 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -11520,7 +11520,9 @@ F: drivers/iio/common/scmi_sensors/scmi_iio.c IIO SUBSYSTEM AND DRIVERS M: Jonathan Cameron -R: Lars-Peter Clausen +R: David Lechner +R: Nuno Sá +R: Andy Shevchenko L: linux-iio@vger.kernel.org S: Maintained T: git git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git -- cgit v1.2.3 From a34b88b48a15f5d49207966fa78e14e71e16ac6c Mon Sep 17 00:00:00 2001 From: Matti Vaittinen Date: Mon, 7 Apr 2025 10:30:47 +0300 Subject: iio: bd79124: Use set_rv and set_multiple_rv The new GPIO callbacks 'set_rv' and 'set_multiple_rv' allow returning a success code to indicate failures when setting GPIO status. Use them to allow callers to know when things go south. Signed-off-by: Matti Vaittinen Link: https://patch.msgid.link/Z_N_J52IZ2IaWawl@mva-rohm Signed-off-by: Jonathan Cameron --- drivers/iio/adc/rohm-bd79124.c | 23 +++++++++++------------ 1 file changed, 11 insertions(+), 12 deletions(-) diff --git a/drivers/iio/adc/rohm-bd79124.c b/drivers/iio/adc/rohm-bd79124.c index 13673f4347d4..bb7c93ae4055 100644 --- a/drivers/iio/adc/rohm-bd79124.c +++ b/drivers/iio/adc/rohm-bd79124.c @@ -196,17 +196,18 @@ static int bd79124gpo_direction_get(struct gpio_chip *gc, unsigned int offset) return GPIO_LINE_DIRECTION_OUT; } -static void bd79124gpo_set(struct gpio_chip *gc, unsigned int offset, int value) +static int bd79124gpo_set(struct gpio_chip *gc, unsigned int offset, int value) { struct bd79124_data *data = gpiochip_get_data(gc); - regmap_assign_bits(data->map, BD79124_REG_GPO_VAL, BIT(offset), value); + return regmap_assign_bits(data->map, BD79124_REG_GPO_VAL, BIT(offset), + value); } -static void bd79124gpo_set_multiple(struct gpio_chip *gc, unsigned long *mask, +static int bd79124gpo_set_multiple(struct gpio_chip *gc, unsigned long *mask, unsigned long *bits) { - unsigned int all_gpos, set_gpos; + unsigned int all_gpos; int ret; struct bd79124_data *data = gpiochip_get_data(gc); @@ -219,17 +220,15 @@ static void bd79124gpo_set_multiple(struct gpio_chip *gc, unsigned long *mask, */ ret = regmap_read(data->map, BD79124_REG_PINCFG, &all_gpos); if (ret) - return; + return ret; if (all_gpos ^ *mask) { dev_dbg(data->dev, "Invalid mux config. Can't set value.\n"); - /* Do not set value for pins configured as ADC inputs */ - set_gpos = *mask & all_gpos; - } else { - set_gpos = *mask; + + return -EINVAL; } - regmap_update_bits(data->map, BD79124_REG_GPO_VAL, set_gpos, *bits); + return regmap_update_bits(data->map, BD79124_REG_GPO_VAL, *mask, *bits); } static int bd79124_init_valid_mask(struct gpio_chip *gc, @@ -247,8 +246,8 @@ static int bd79124_init_valid_mask(struct gpio_chip *gc, static const struct gpio_chip bd79124gpo_chip = { .label = "bd79124-gpo", .get_direction = bd79124gpo_direction_get, - .set = bd79124gpo_set, - .set_multiple = bd79124gpo_set_multiple, + .set_rv = bd79124gpo_set, + .set_multiple_rv = bd79124gpo_set_multiple, .init_valid_mask = bd79124_init_valid_mask, .can_sleep = true, .ngpio = 8, -- cgit v1.2.3 From 0f8d8b3548fbbc1ee04ffa5a9bee4e57d3cf447c Mon Sep 17 00:00:00 2001 From: Bartosz Golaszewski Date: Wed, 9 Apr 2025 10:40:39 +0200 Subject: iio: dac: ad5592r: destroy mutexes in detach paths MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The locks used here are initialized but never released which causes resource leaks with mutex debugging enabled. Add missing calls to mutex_destroy() or use devres if applicable. Signed-off-by: Bartosz Golaszewski Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250409-gpiochip-set-rv-iio-v2-1-4b36428f39cb@linaro.org Signed-off-by: Jonathan Cameron --- drivers/iio/dac/ad5592r-base.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/iio/dac/ad5592r-base.c b/drivers/iio/dac/ad5592r-base.c index 50d19304bacb..eb85907f61ae 100644 --- a/drivers/iio/dac/ad5592r-base.c +++ b/drivers/iio/dac/ad5592r-base.c @@ -155,6 +155,8 @@ static void ad5592r_gpio_cleanup(struct ad5592r_state *st) { if (st->gpio_map) gpiochip_remove(&st->gpiochip); + + mutex_destroy(&st->gpio_lock); } static int ad5592r_reset(struct ad5592r_state *st) @@ -606,6 +608,10 @@ int ad5592r_probe(struct device *dev, const char *name, st->num_channels = 8; dev_set_drvdata(dev, iio_dev); + ret = devm_mutex_init(dev, &st->lock); + if (ret) + return ret; + st->reg = devm_regulator_get_optional(dev, "vref"); if (IS_ERR(st->reg)) { if ((PTR_ERR(st->reg) != -ENODEV) && dev_fwnode(dev)) @@ -622,8 +628,6 @@ int ad5592r_probe(struct device *dev, const char *name, iio_dev->info = &ad5592r_info; iio_dev->modes = INDIO_DIRECT_MODE; - mutex_init(&st->lock); - ad5592r_init_scales(st, ad5592r_get_vref(st)); ret = ad5592r_reset(st); -- cgit v1.2.3 From 135e101f4dd6e4177a1fbe587cb484f5827b4b88 Mon Sep 17 00:00:00 2001 From: Bartosz Golaszewski Date: Wed, 9 Apr 2025 10:40:40 +0200 Subject: iio: dac: ad5592r: use lock guards MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Use lock guards from linux/cleanup.h to simplify the code and remove some labels. Note that we need to initialize some variables even though it's not technically required as scoped_guards() are implemented as for loops. Signed-off-by: Bartosz Golaszewski Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250409-gpiochip-set-rv-iio-v2-2-4b36428f39cb@linaro.org Signed-off-by: Jonathan Cameron --- drivers/iio/dac/ad5592r-base.c | 135 +++++++++++++++++------------------------ 1 file changed, 56 insertions(+), 79 deletions(-) diff --git a/drivers/iio/dac/ad5592r-base.c b/drivers/iio/dac/ad5592r-base.c index eb85907f61ae..32e63a159d86 100644 --- a/drivers/iio/dac/ad5592r-base.c +++ b/drivers/iio/dac/ad5592r-base.c @@ -7,6 +7,7 @@ */ #include +#include #include #include #include @@ -24,16 +25,14 @@ static int ad5592r_gpio_get(struct gpio_chip *chip, unsigned offset) { struct ad5592r_state *st = gpiochip_get_data(chip); int ret = 0; - u8 val; + u8 val = 0; - mutex_lock(&st->gpio_lock); - - if (st->gpio_out & BIT(offset)) - val = st->gpio_val; - else - ret = st->ops->gpio_read(st, &val); - - mutex_unlock(&st->gpio_lock); + scoped_guard(mutex, &st->gpio_lock) { + if (st->gpio_out & BIT(offset)) + val = st->gpio_val; + else + ret = st->ops->gpio_read(st, &val); + } if (ret < 0) return ret; @@ -45,7 +44,7 @@ static void ad5592r_gpio_set(struct gpio_chip *chip, unsigned offset, int value) { struct ad5592r_state *st = gpiochip_get_data(chip); - mutex_lock(&st->gpio_lock); + guard(mutex)(&st->gpio_lock); if (value) st->gpio_val |= BIT(offset); @@ -53,8 +52,6 @@ static void ad5592r_gpio_set(struct gpio_chip *chip, unsigned offset, int value) st->gpio_val &= ~BIT(offset); st->ops->reg_write(st, AD5592R_REG_GPIO_SET, st->gpio_val); - - mutex_unlock(&st->gpio_lock); } static int ad5592r_gpio_direction_input(struct gpio_chip *chip, unsigned offset) @@ -62,21 +59,16 @@ static int ad5592r_gpio_direction_input(struct gpio_chip *chip, unsigned offset) struct ad5592r_state *st = gpiochip_get_data(chip); int ret; - mutex_lock(&st->gpio_lock); + guard(mutex)(&st->gpio_lock); st->gpio_out &= ~BIT(offset); st->gpio_in |= BIT(offset); ret = st->ops->reg_write(st, AD5592R_REG_GPIO_OUT_EN, st->gpio_out); if (ret < 0) - goto err_unlock; - - ret = st->ops->reg_write(st, AD5592R_REG_GPIO_IN_EN, st->gpio_in); - -err_unlock: - mutex_unlock(&st->gpio_lock); + return ret; - return ret; + return st->ops->reg_write(st, AD5592R_REG_GPIO_IN_EN, st->gpio_in); } static int ad5592r_gpio_direction_output(struct gpio_chip *chip, @@ -85,7 +77,7 @@ static int ad5592r_gpio_direction_output(struct gpio_chip *chip, struct ad5592r_state *st = gpiochip_get_data(chip); int ret; - mutex_lock(&st->gpio_lock); + guard(mutex)(&st->gpio_lock); if (value) st->gpio_val |= BIT(offset); @@ -97,18 +89,13 @@ static int ad5592r_gpio_direction_output(struct gpio_chip *chip, ret = st->ops->reg_write(st, AD5592R_REG_GPIO_SET, st->gpio_val); if (ret < 0) - goto err_unlock; + return ret; ret = st->ops->reg_write(st, AD5592R_REG_GPIO_OUT_EN, st->gpio_out); if (ret < 0) - goto err_unlock; - - ret = st->ops->reg_write(st, AD5592R_REG_GPIO_IN_EN, st->gpio_in); - -err_unlock: - mutex_unlock(&st->gpio_lock); + return ret; - return ret; + return st->ops->reg_write(st, AD5592R_REG_GPIO_IN_EN, st->gpio_in); } static int ad5592r_gpio_request(struct gpio_chip *chip, unsigned offset) @@ -171,10 +158,9 @@ static int ad5592r_reset(struct ad5592r_state *st) udelay(1); gpiod_set_value(gpio, 1); } else { - mutex_lock(&st->lock); - /* Writing this magic value resets the device */ - st->ops->reg_write(st, AD5592R_REG_RESET, 0xdac); - mutex_unlock(&st->lock); + scoped_guard(mutex, &st->lock) + /* Writing this magic value resets the device */ + st->ops->reg_write(st, AD5592R_REG_RESET, 0xdac); } udelay(250); @@ -249,46 +235,44 @@ static int ad5592r_set_channel_modes(struct ad5592r_state *st) } } - mutex_lock(&st->lock); + guard(mutex)(&st->lock); /* Pull down unused pins to GND */ ret = ops->reg_write(st, AD5592R_REG_PULLDOWN, pulldown); if (ret) - goto err_unlock; + return ret; ret = ops->reg_write(st, AD5592R_REG_TRISTATE, tristate); if (ret) - goto err_unlock; + return ret; /* Configure pins that we use */ ret = ops->reg_write(st, AD5592R_REG_DAC_EN, dac); if (ret) - goto err_unlock; + return ret; ret = ops->reg_write(st, AD5592R_REG_ADC_EN, adc); if (ret) - goto err_unlock; + return ret; ret = ops->reg_write(st, AD5592R_REG_GPIO_SET, st->gpio_val); if (ret) - goto err_unlock; + return ret; ret = ops->reg_write(st, AD5592R_REG_GPIO_OUT_EN, st->gpio_out); if (ret) - goto err_unlock; + return ret; ret = ops->reg_write(st, AD5592R_REG_GPIO_IN_EN, st->gpio_in); if (ret) - goto err_unlock; + return ret; /* Verify that we can read back at least one register */ ret = ops->reg_read(st, AD5592R_REG_ADC_EN, &read_back); if (!ret && (read_back & 0xff) != adc) - ret = -EIO; + return -EIO; -err_unlock: - mutex_unlock(&st->lock); - return ret; + return 0; } static int ad5592r_reset_channel_modes(struct ad5592r_state *st) @@ -305,7 +289,7 @@ static int ad5592r_write_raw(struct iio_dev *iio_dev, struct iio_chan_spec const *chan, int val, int val2, long mask) { struct ad5592r_state *st = iio_priv(iio_dev); - int ret; + int ret = 0; switch (mask) { case IIO_CHAN_INFO_RAW: @@ -316,11 +300,11 @@ static int ad5592r_write_raw(struct iio_dev *iio_dev, if (!chan->output) return -EINVAL; - mutex_lock(&st->lock); - ret = st->ops->write_dac(st, chan->channel, val); - if (!ret) - st->cached_dac[chan->channel] = val; - mutex_unlock(&st->lock); + scoped_guard(mutex, &st->lock) { + ret = st->ops->write_dac(st, chan->channel, val); + if (!ret) + st->cached_dac[chan->channel] = val; + } return ret; case IIO_CHAN_INFO_SCALE: if (chan->type == IIO_VOLTAGE) { @@ -335,7 +319,7 @@ static int ad5592r_write_raw(struct iio_dev *iio_dev, else return -EINVAL; - mutex_lock(&st->lock); + guard(mutex)(&st->lock); ret = st->ops->reg_read(st, AD5592R_REG_CTRL, &st->cached_gp_ctrl); @@ -360,11 +344,8 @@ static int ad5592r_write_raw(struct iio_dev *iio_dev, ~AD5592R_REG_CTRL_ADC_RANGE; } - ret = st->ops->reg_write(st, AD5592R_REG_CTRL, - st->cached_gp_ctrl); - mutex_unlock(&st->lock); - - return ret; + return st->ops->reg_write(st, AD5592R_REG_CTRL, + st->cached_gp_ctrl); } break; default: @@ -379,15 +360,15 @@ static int ad5592r_read_raw(struct iio_dev *iio_dev, int *val, int *val2, long m) { struct ad5592r_state *st = iio_priv(iio_dev); - u16 read_val; - int ret, mult; + u16 read_val = 0; + int ret = 0, mult = 0; switch (m) { case IIO_CHAN_INFO_RAW: if (!chan->output) { - mutex_lock(&st->lock); - ret = st->ops->read_adc(st, chan->channel, &read_val); - mutex_unlock(&st->lock); + scoped_guard(mutex, &st->lock) + ret = st->ops->read_adc(st, chan->channel, + &read_val); if (ret) return ret; @@ -400,9 +381,8 @@ static int ad5592r_read_raw(struct iio_dev *iio_dev, read_val &= GENMASK(11, 0); } else { - mutex_lock(&st->lock); - read_val = st->cached_dac[chan->channel]; - mutex_unlock(&st->lock); + scoped_guard(mutex, &st->lock) + read_val = st->cached_dac[chan->channel]; } dev_dbg(st->dev, "Channel %u read: 0x%04hX\n", @@ -420,35 +400,32 @@ static int ad5592r_read_raw(struct iio_dev *iio_dev, return IIO_VAL_INT_PLUS_NANO; } - mutex_lock(&st->lock); - - if (chan->output) - mult = !!(st->cached_gp_ctrl & - AD5592R_REG_CTRL_DAC_RANGE); - else - mult = !!(st->cached_gp_ctrl & - AD5592R_REG_CTRL_ADC_RANGE); - - mutex_unlock(&st->lock); + scoped_guard(mutex, &st->lock) { + if (chan->output) + mult = !!(st->cached_gp_ctrl & + AD5592R_REG_CTRL_DAC_RANGE); + else + mult = !!(st->cached_gp_ctrl & + AD5592R_REG_CTRL_ADC_RANGE); + } *val *= ++mult; *val2 = chan->scan_type.realbits; return IIO_VAL_FRACTIONAL_LOG2; - case IIO_CHAN_INFO_OFFSET: + case IIO_CHAN_INFO_OFFSET: { ret = ad5592r_get_vref(st); - mutex_lock(&st->lock); + guard(mutex)(&st->lock); if (st->cached_gp_ctrl & AD5592R_REG_CTRL_ADC_RANGE) *val = (-34365 * 25) / ret; else *val = (-75365 * 25) / ret; - mutex_unlock(&st->lock); - return IIO_VAL_INT; + } default: return -EINVAL; } -- cgit v1.2.3 From 8a2d2326f5ef42e34bd2c946ae74d6ff7c2f2767 Mon Sep 17 00:00:00 2001 From: Bartosz Golaszewski Date: Wed, 9 Apr 2025 10:40:41 +0200 Subject: iio: dac: ad5592r: use new GPIO line value setter callbacks MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit struct gpio_chip now has callbacks for setting line values that return an integer, allowing to indicate failures. Convert the driver to using them. Signed-off-by: Bartosz Golaszewski Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250409-gpiochip-set-rv-iio-v2-3-4b36428f39cb@linaro.org Signed-off-by: Jonathan Cameron --- drivers/iio/dac/ad5592r-base.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/iio/dac/ad5592r-base.c b/drivers/iio/dac/ad5592r-base.c index 32e63a159d86..ed7a3dd6be83 100644 --- a/drivers/iio/dac/ad5592r-base.c +++ b/drivers/iio/dac/ad5592r-base.c @@ -40,7 +40,8 @@ static int ad5592r_gpio_get(struct gpio_chip *chip, unsigned offset) return !!(val & BIT(offset)); } -static void ad5592r_gpio_set(struct gpio_chip *chip, unsigned offset, int value) +static int ad5592r_gpio_set(struct gpio_chip *chip, unsigned int offset, + int value) { struct ad5592r_state *st = gpiochip_get_data(chip); @@ -51,7 +52,7 @@ static void ad5592r_gpio_set(struct gpio_chip *chip, unsigned offset, int value) else st->gpio_val &= ~BIT(offset); - st->ops->reg_write(st, AD5592R_REG_GPIO_SET, st->gpio_val); + return st->ops->reg_write(st, AD5592R_REG_GPIO_SET, st->gpio_val); } static int ad5592r_gpio_direction_input(struct gpio_chip *chip, unsigned offset) @@ -128,7 +129,7 @@ static int ad5592r_gpio_init(struct ad5592r_state *st) st->gpiochip.direction_input = ad5592r_gpio_direction_input; st->gpiochip.direction_output = ad5592r_gpio_direction_output; st->gpiochip.get = ad5592r_gpio_get; - st->gpiochip.set = ad5592r_gpio_set; + st->gpiochip.set_rv = ad5592r_gpio_set; st->gpiochip.request = ad5592r_gpio_request; st->gpiochip.owner = THIS_MODULE; st->gpiochip.names = ad5592r_gpio_names; -- cgit v1.2.3 From 6c6881af0172c7dfab633346f05347e6fd30c610 Mon Sep 17 00:00:00 2001 From: Bartosz Golaszewski Date: Wed, 9 Apr 2025 10:40:42 +0200 Subject: iio: adc: ti-ads7950: use new GPIO line value setter callbacks MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit struct gpio_chip now has callbacks for setting line values that return an integer, allowing to indicate failures. Convert the driver to using them. Signed-off-by: Bartosz Golaszewski Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250409-gpiochip-set-rv-iio-v2-4-4b36428f39cb@linaro.org Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ti-ads7950.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) diff --git a/drivers/iio/adc/ti-ads7950.c b/drivers/iio/adc/ti-ads7950.c index af28672aa803..0356ccf23fea 100644 --- a/drivers/iio/adc/ti-ads7950.c +++ b/drivers/iio/adc/ti-ads7950.c @@ -403,10 +403,11 @@ static const struct iio_info ti_ads7950_info = { .update_scan_mode = ti_ads7950_update_scan_mode, }; -static void ti_ads7950_set(struct gpio_chip *chip, unsigned int offset, - int value) +static int ti_ads7950_set(struct gpio_chip *chip, unsigned int offset, + int value) { struct ti_ads7950_state *st = gpiochip_get_data(chip); + int ret; mutex_lock(&st->slock); @@ -416,9 +417,11 @@ static void ti_ads7950_set(struct gpio_chip *chip, unsigned int offset, st->cmd_settings_bitmask &= ~BIT(offset); st->single_tx = TI_ADS7950_MAN_CMD_SETTINGS(st); - spi_sync(st->spi, &st->scan_single_msg); + ret = spi_sync(st->spi, &st->scan_single_msg); mutex_unlock(&st->slock); + + return ret; } static int ti_ads7950_get(struct gpio_chip *chip, unsigned int offset) @@ -499,7 +502,11 @@ static int ti_ads7950_direction_input(struct gpio_chip *chip, static int ti_ads7950_direction_output(struct gpio_chip *chip, unsigned int offset, int value) { - ti_ads7950_set(chip, offset, value); + int ret; + + ret = ti_ads7950_set(chip, offset, value); + if (ret) + return ret; return _ti_ads7950_set_direction(chip, offset, 0); } @@ -641,7 +648,7 @@ static int ti_ads7950_probe(struct spi_device *spi) st->chip.direction_input = ti_ads7950_direction_input; st->chip.direction_output = ti_ads7950_direction_output; st->chip.get = ti_ads7950_get; - st->chip.set = ti_ads7950_set; + st->chip.set_rv = ti_ads7950_set; ret = gpiochip_add_data(&st->chip, st); if (ret) { -- cgit v1.2.3 From 3bb36fe0587aa23b8fd739c3df9ff02049cc7789 Mon Sep 17 00:00:00 2001 From: Bartosz Golaszewski Date: Wed, 9 Apr 2025 10:40:43 +0200 Subject: iio: adc: ad4130: use new GPIO line value setter callbacks MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit struct gpio_chip now has callbacks for setting line values that return an integer, allowing to indicate failures. Convert the driver to using them. Signed-off-by: Bartosz Golaszewski Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250409-gpiochip-set-rv-iio-v2-5-4b36428f39cb@linaro.org Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad4130.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/iio/adc/ad4130.c b/drivers/iio/adc/ad4130.c index 0f4c9cd6c102..6cf790ff3eb5 100644 --- a/drivers/iio/adc/ad4130.c +++ b/drivers/iio/adc/ad4130.c @@ -522,15 +522,15 @@ static int ad4130_gpio_get_direction(struct gpio_chip *gc, unsigned int offset) return GPIO_LINE_DIRECTION_OUT; } -static void ad4130_gpio_set(struct gpio_chip *gc, unsigned int offset, - int value) +static int ad4130_gpio_set(struct gpio_chip *gc, unsigned int offset, + int value) { struct ad4130_state *st = gpiochip_get_data(gc); unsigned int mask = FIELD_PREP(AD4130_IO_CONTROL_GPIO_DATA_MASK, BIT(offset)); - regmap_update_bits(st->regmap, AD4130_IO_CONTROL_REG, mask, - value ? mask : 0); + return regmap_update_bits(st->regmap, AD4130_IO_CONTROL_REG, mask, + value ? mask : 0); } static int ad4130_set_mode(struct ad4130_state *st, enum ad4130_mode mode) @@ -2064,7 +2064,7 @@ static int ad4130_probe(struct spi_device *spi) st->gc.can_sleep = true; st->gc.init_valid_mask = ad4130_gpio_init_valid_mask; st->gc.get_direction = ad4130_gpio_get_direction; - st->gc.set = ad4130_gpio_set; + st->gc.set_rv = ad4130_gpio_set; ret = devm_gpiochip_add_data(dev, &st->gc, st); if (ret) -- cgit v1.2.3 From b8b3ea642911dacd0b99bc7196e8f6e64a48393d Mon Sep 17 00:00:00 2001 From: Bartosz Golaszewski Date: Wed, 9 Apr 2025 10:40:44 +0200 Subject: iio: addac: ad74413r: use new GPIO line value setter callbacks MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit struct gpio_chip now has callbacks for setting line values that return an integer, allowing to indicate failures. Convert the driver to using them. Signed-off-by: Bartosz Golaszewski Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250409-gpiochip-set-rv-iio-v2-6-4b36428f39cb@linaro.org Signed-off-by: Jonathan Cameron --- drivers/iio/addac/ad74413r.c | 28 ++++++++++++++-------------- 1 file changed, 14 insertions(+), 14 deletions(-) diff --git a/drivers/iio/addac/ad74413r.c b/drivers/iio/addac/ad74413r.c index f14d12b03da6..adfa14c4b06f 100644 --- a/drivers/iio/addac/ad74413r.c +++ b/drivers/iio/addac/ad74413r.c @@ -276,8 +276,8 @@ static int ad74413r_set_comp_drive_strength(struct ad74413r_state *st, } -static void ad74413r_gpio_set(struct gpio_chip *chip, - unsigned int offset, int val) +static int ad74413r_gpio_set(struct gpio_chip *chip, unsigned int offset, + int val) { struct ad74413r_state *st = gpiochip_get_data(chip); unsigned int real_offset = st->gpo_gpio_offsets[offset]; @@ -286,16 +286,16 @@ static void ad74413r_gpio_set(struct gpio_chip *chip, ret = ad74413r_set_gpo_config(st, real_offset, AD74413R_GPO_CONFIG_LOGIC); if (ret) - return; + return ret; - regmap_update_bits(st->regmap, AD74413R_REG_GPO_CONFIG_X(real_offset), - AD74413R_GPO_CONFIG_DATA_MASK, - val ? AD74413R_GPO_CONFIG_DATA_MASK : 0); + return regmap_update_bits(st->regmap, + AD74413R_REG_GPO_CONFIG_X(real_offset), + AD74413R_GPO_CONFIG_DATA_MASK, + val ? AD74413R_GPO_CONFIG_DATA_MASK : 0); } -static void ad74413r_gpio_set_multiple(struct gpio_chip *chip, - unsigned long *mask, - unsigned long *bits) +static int ad74413r_gpio_set_multiple(struct gpio_chip *chip, + unsigned long *mask, unsigned long *bits) { struct ad74413r_state *st = gpiochip_get_data(chip); unsigned long real_mask = 0; @@ -309,15 +309,15 @@ static void ad74413r_gpio_set_multiple(struct gpio_chip *chip, ret = ad74413r_set_gpo_config(st, real_offset, AD74413R_GPO_CONFIG_LOGIC_PARALLEL); if (ret) - return; + return ret; real_mask |= BIT(real_offset); if (*bits & offset) real_bits |= BIT(real_offset); } - regmap_update_bits(st->regmap, AD74413R_REG_GPO_PAR_DATA, - real_mask, real_bits); + return regmap_update_bits(st->regmap, AD74413R_REG_GPO_PAR_DATA, + real_mask, real_bits); } static int ad74413r_gpio_get(struct gpio_chip *chip, unsigned int offset) @@ -1424,8 +1424,8 @@ static int ad74413r_probe(struct spi_device *spi) st->gpo_gpiochip.ngpio = st->num_gpo_gpios; st->gpo_gpiochip.parent = st->dev; st->gpo_gpiochip.can_sleep = true; - st->gpo_gpiochip.set = ad74413r_gpio_set; - st->gpo_gpiochip.set_multiple = ad74413r_gpio_set_multiple; + st->gpo_gpiochip.set_rv = ad74413r_gpio_set; + st->gpo_gpiochip.set_multiple_rv = ad74413r_gpio_set_multiple; st->gpo_gpiochip.set_config = ad74413r_gpio_set_gpo_config; st->gpo_gpiochip.get_direction = ad74413r_gpio_get_gpo_direction; -- cgit v1.2.3 From c3c8492cecf03811782e7c81fcaf5304866c4f48 Mon Sep 17 00:00:00 2001 From: Bartosz Golaszewski Date: Wed, 9 Apr 2025 10:40:45 +0200 Subject: iio: addac: ad74115: use new GPIO line value setter callbacks MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit struct gpio_chip now has callbacks for setting line values that return an integer, allowing to indicate failures. Convert the driver to using them. Signed-off-by: Bartosz Golaszewski Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250409-gpiochip-set-rv-iio-v2-7-4b36428f39cb@linaro.org Signed-off-by: Jonathan Cameron --- drivers/iio/addac/ad74115.c | 18 ++++++++---------- 1 file changed, 8 insertions(+), 10 deletions(-) diff --git a/drivers/iio/addac/ad74115.c b/drivers/iio/addac/ad74115.c index edccdc9cf34b..4d8b64048e4f 100644 --- a/drivers/iio/addac/ad74115.c +++ b/drivers/iio/addac/ad74115.c @@ -542,18 +542,16 @@ static int ad74115_gpio_get(struct gpio_chip *gc, unsigned int offset) return FIELD_GET(AD74115_GPIO_CONFIG_GPI_DATA, val); } -static void ad74115_gpio_set(struct gpio_chip *gc, unsigned int offset, int value) +static int ad74115_gpio_set(struct gpio_chip *gc, unsigned int offset, + int value) { struct ad74115_state *st = gpiochip_get_data(gc); - struct device *dev = &st->spi->dev; - int ret; - ret = regmap_update_bits(st->regmap, AD74115_GPIO_CONFIG_X_REG(offset), - AD74115_GPIO_CONFIG_GPO_DATA, - FIELD_PREP(AD74115_GPIO_CONFIG_GPO_DATA, value)); - if (ret) - dev_err(dev, "Failed to set GPIO %u output value, err: %d\n", - offset, ret); + return regmap_update_bits(st->regmap, + AD74115_GPIO_CONFIG_X_REG(offset), + AD74115_GPIO_CONFIG_GPO_DATA, + FIELD_PREP(AD74115_GPIO_CONFIG_GPO_DATA, + value)); } static int ad74115_set_comp_debounce(struct ad74115_state *st, unsigned int val) @@ -1579,7 +1577,7 @@ static int ad74115_setup_gpio_chip(struct ad74115_state *st) .direction_input = ad74115_gpio_direction_input, .direction_output = ad74115_gpio_direction_output, .get = ad74115_gpio_get, - .set = ad74115_gpio_set, + .set_rv = ad74115_gpio_set, }; return devm_gpiochip_add_data(dev, &st->gc, st); -- cgit v1.2.3 From 085831cfce61fc5e326f31eec1976414e71f4c17 Mon Sep 17 00:00:00 2001 From: Matti Vaittinen Date: Mon, 7 Apr 2025 13:45:06 +0300 Subject: dt-bindings: ROHM BD79104 ADC The ROHM BD79104 is a 12-bit, 8-channel ADC with two power supply pins, connected to SPI. It's worth noting the IC requires SPI MODE 3, (CPHA = 1, CPOL = 1). I used an evaluation board "BD79104FV-EVK-001" from ROHM. With this board I had problems to have things working correctly with higher SPI clock frequencies. I didn't do thorough testing for maximum frequency though. First attempt was 40M, then 20M and finally 4M. With 20M it seemed as if the read values were shifted by 1 bit. With 4M it worked fine. The component data-sheet is not exact what comes to the maximum SPI frequency. It says SPI frequency is 20M - "unless othervice specified". Additionally, it says that maximum sampling rate is 1Mhz, and since reading a sample requires writing the channel (16 bits) and reading data (16 bits) - we get some upper limit from this. >From the "frequency is 20M, unless othervice specified" I picked the maximum frequency 20M - and did assumption that my problems with 20M weren't related to the BD79104 - but to the evaluation board "BD79104FV-EVK-001". Add bindings for the ROHM BD79104 ADC. Signed-off-by: Matti Vaittinen Reviewed-by: Conor Dooley Link: https://patch.msgid.link/2a4c65ee35cb79c6b29dbc59cfd9bc7d615a08ac.1744022065.git.mazziesaccount@gmail.com Signed-off-by: Jonathan Cameron --- .../devicetree/bindings/iio/adc/rohm,bd79104.yaml | 69 ++++++++++++++++++++++ 1 file changed, 69 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/adc/rohm,bd79104.yaml diff --git a/Documentation/devicetree/bindings/iio/adc/rohm,bd79104.yaml b/Documentation/devicetree/bindings/iio/adc/rohm,bd79104.yaml new file mode 100644 index 000000000000..2a8ad4fdfc6b --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/rohm,bd79104.yaml @@ -0,0 +1,69 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/adc/rohm,bd79104.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: ROHM Semiconductor BD79104 ADC + +maintainers: + - Matti Vaittinen + +description: | + 12 bit SPI ADC with 8 channels. + +properties: + compatible: + const: rohm,bd79104 + + reg: + maxItems: 1 + + vdd-supply: true + iovdd-supply: true + +# The component data-sheet says the frequency is 20M. I, however, found +# that the ROHM evaluation board BD79104FV-EVK-001 had problems with 20M. +# I have successfully used it with 4M. My _assumption_ is that this is not +# the limitation of the component itself, but a limitation of the EVK. + spi-max-frequency: + maximum: 20000000 + + "#io-channel-cells": + const: 1 + + spi-cpha: true + spi-cpol: true + +required: + - compatible + - reg + - vdd-supply + - iovdd-supply + - spi-cpha + - spi-cpol + +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false + +examples: + - | + #include + spi { + #address-cells = <1>; + #size-cells = <0>; + + adc@0 { + compatible = "rohm,bd79104"; + reg = <0>; + vdd-supply = <&vdd_supply>; + iovdd-supply = <&iovdd_supply>; + spi-max-frequency = <4000000>; + spi-cpha; + spi-cpol; + #io-channel-cells = <1>; + }; + }; +... -- cgit v1.2.3 From 7af2ea72d680327069ad8d9cd63052369e99bbb7 Mon Sep 17 00:00:00 2001 From: Matti Vaittinen Date: Mon, 7 Apr 2025 14:35:56 +0300 Subject: iio: adc: ti-adc128s052: Simplify using be16_to_cpu() The register data is 12-bit big-endian data. Use be16_to_cpu() to do the conversion, and simple bitwise AND for masking to make it more obvious. Signed-off-by: Matti Vaittinen Link: https://patch.msgid.link/8202060d90221beb9b8cf467606641349ad47fe9.1744022065.git.mazziesaccount@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ti-adc128s052.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/drivers/iio/adc/ti-adc128s052.c b/drivers/iio/adc/ti-adc128s052.c index a456ea78462f..c5b2374322e4 100644 --- a/drivers/iio/adc/ti-adc128s052.c +++ b/drivers/iio/adc/ti-adc128s052.c @@ -28,7 +28,10 @@ struct adc128 { struct regulator *reg; struct mutex lock; - u8 buffer[2] __aligned(IIO_DMA_MINALIGN); + union { + __be16 buffer16; + u8 buffer[2]; + } __aligned(IIO_DMA_MINALIGN); }; static int adc128_adc_conversion(struct adc128 *adc, u8 channel) @@ -40,20 +43,18 @@ static int adc128_adc_conversion(struct adc128 *adc, u8 channel) adc->buffer[0] = channel << 3; adc->buffer[1] = 0; - ret = spi_write(adc->spi, &adc->buffer, 2); + ret = spi_write(adc->spi, &adc->buffer, sizeof(adc->buffer)); if (ret < 0) { mutex_unlock(&adc->lock); return ret; } - ret = spi_read(adc->spi, &adc->buffer, 2); - + ret = spi_read(adc->spi, &adc->buffer16, sizeof(adc->buffer16)); mutex_unlock(&adc->lock); - if (ret < 0) return ret; - return ((adc->buffer[0] << 8 | adc->buffer[1]) & 0xFFF); + return be16_to_cpu(adc->buffer16) & 0xFFF; } static int adc128_read_raw(struct iio_dev *indio_dev, -- cgit v1.2.3 From 6c41d590722c5753d9f15b73d7724a7950c36bf2 Mon Sep 17 00:00:00 2001 From: Matti Vaittinen Date: Mon, 7 Apr 2025 14:36:11 +0300 Subject: iio: adc: ti-adc128s052: Be consistent with arrays The ti-adc128s052 driver has NULL terminated ID arrays for the of_device_id, spi_device_id and acpi_device_id. All of these are terminated by having an empty string as the last member of an array. Only the of_device_id array uses the /* sentinel */ comment. It's better to be consistent. This /* sentinel */ comment serves no real purpose these days as people are used to seeing these ID lists terminated with an empty array element. Drop the /* sentinel */ from the of_device_id. Signed-off-by: Matti Vaittinen Link: https://patch.msgid.link/bb58002accc696bd4a8fbbab37100c6fa0c29941.1744022065.git.mazziesaccount@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ti-adc128s052.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/adc/ti-adc128s052.c b/drivers/iio/adc/ti-adc128s052.c index c5b2374322e4..d0702d403fbe 100644 --- a/drivers/iio/adc/ti-adc128s052.c +++ b/drivers/iio/adc/ti-adc128s052.c @@ -185,7 +185,7 @@ static const struct of_device_id adc128_of_match[] = { { .compatible = "ti,adc124s021", .data = &adc128_config[2] }, { .compatible = "ti,adc124s051", .data = &adc128_config[2] }, { .compatible = "ti,adc124s101", .data = &adc128_config[2] }, - { /* sentinel */ }, + { } }; MODULE_DEVICE_TABLE(of, adc128_of_match); -- cgit v1.2.3 From 804757a221a9258eca90129aff4b136abe335446 Mon Sep 17 00:00:00 2001 From: Matti Vaittinen Date: Mon, 7 Apr 2025 14:36:23 +0300 Subject: iio: adc: ti-adc128s052: Use devm_mutex_init() Quoting Jonathan: "Whilst it doesn't bring huge advantage, now we have devm_mutex_init() it seems reasonable to use it and maybe catch a use after free for the lock" Switch to use devm_mutex_init() while working on this file. Signed-off-by: Matti Vaittinen Link: https://patch.msgid.link/efe4a039e2bfbf4dcf30743f6b7b88fce3b9ee39.1744022065.git.mazziesaccount@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ti-adc128s052.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/iio/adc/ti-adc128s052.c b/drivers/iio/adc/ti-adc128s052.c index d0702d403fbe..d90a5caa028f 100644 --- a/drivers/iio/adc/ti-adc128s052.c +++ b/drivers/iio/adc/ti-adc128s052.c @@ -172,7 +172,9 @@ static int adc128_probe(struct spi_device *spi) if (ret) return ret; - mutex_init(&adc->lock); + ret = devm_mutex_init(&spi->dev, &adc->lock); + if (ret) + return ret; return devm_iio_device_register(&spi->dev, indio_dev); } -- cgit v1.2.3 From 944de7fce763f6233a03fdc496630ae0e259015f Mon Sep 17 00:00:00 2001 From: Matti Vaittinen Date: Mon, 7 Apr 2025 14:36:35 +0300 Subject: iio: adc: ti-adc128s052: Simplify using guard(mutex) Error path in ADC reading function can be slighly simplified using the guard(mutex). Use guard(mutex) and document the mutex purpose. Signed-off-by: Matti Vaittinen Link: https://patch.msgid.link/c4262cbf55748d505a74249d2bf46d7c3594d838.1744022065.git.mazziesaccount@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ti-adc128s052.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/iio/adc/ti-adc128s052.c b/drivers/iio/adc/ti-adc128s052.c index d90a5caa028f..fa0099356be7 100644 --- a/drivers/iio/adc/ti-adc128s052.c +++ b/drivers/iio/adc/ti-adc128s052.c @@ -9,6 +9,7 @@ * https://www.ti.com/lit/ds/symlink/adc124s021.pdf */ +#include #include #include #include @@ -26,6 +27,10 @@ struct adc128 { struct spi_device *spi; struct regulator *reg; + /* + * Serialize the SPI 'write-channel + read data' accesses and protect + * the shared buffer. + */ struct mutex lock; union { @@ -38,19 +43,16 @@ static int adc128_adc_conversion(struct adc128 *adc, u8 channel) { int ret; - mutex_lock(&adc->lock); + guard(mutex)(&adc->lock); adc->buffer[0] = channel << 3; adc->buffer[1] = 0; ret = spi_write(adc->spi, &adc->buffer, sizeof(adc->buffer)); - if (ret < 0) { - mutex_unlock(&adc->lock); + if (ret < 0) return ret; - } ret = spi_read(adc->spi, &adc->buffer16, sizeof(adc->buffer16)); - mutex_unlock(&adc->lock); if (ret < 0) return ret; -- cgit v1.2.3 From fbc18f27cf214347d121ceb943b0ac07b5f07249 Mon Sep 17 00:00:00 2001 From: Matti Vaittinen Date: Mon, 7 Apr 2025 14:36:47 +0300 Subject: iio: adc: ti-adc128s052: Support ROHM BD79104 The ROHM BD79104 ADC has identical SPI communication logic as the ti-adc128s052. Eg, SPI transfer should be 16 clk cycles, conversion is started when the CS is pulled low, and channel selection is done by writing the channel ID after two zero bits. Data is contained in big-endian format in the last 12 bits. The BD79104 has two input voltage pins. Data sheet uses terms "vdd" and "iovdd". The "vdd" is used also as an analog reference voltage. Hence the driver expects finding these from the device-tree, instead of having the "vref" only as TI's driver. NOTE: The TI's data sheet[1] does show that the TI's IC does actually have two voltage inputs as well. Pins are called Va (analog reference) and Vd (digital supply pin) - but I keep the existing driver behaviour for the TI's IC "as is", because I have no HW to test changes, and because I have no real need to touch it. NOTE II: The BD79104 requires SPI MODE 3. NOTE III: I used evaluation board "BD79104FV-EVK-001" made by ROHM. With this board I had to drop the SPI speed below the 20M which is mentioned in the data-sheet [2]. This, however, may be a limitation of the EVK board, not the component itself. Signed-off-by: Matti Vaittinen Datasheet: https://www.ti.com/lit/ds/symlink/adc128s052.pdf # [1] Datasheet: https://fscdn.rohm.com/en/products/databook/datasheet/ic/data_converter/dac/bd79104fv-la-e.pdf # [2] Link: https://patch.msgid.link/36ffa72cbdf8dbbdf1e612040db82ebcdf73fa24.1744022065.git.mazziesaccount@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/Kconfig | 2 +- drivers/iio/adc/ti-adc128s052.c | 40 ++++++++++++++++++++++++++++++++++++---- 2 files changed, 37 insertions(+), 5 deletions(-) diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig index 636469392945..b8e097f21a59 100644 --- a/drivers/iio/adc/Kconfig +++ b/drivers/iio/adc/Kconfig @@ -1493,7 +1493,7 @@ config TI_ADC128S052 depends on SPI help If you say yes here you get support for Texas Instruments ADC128S052, - ADC122S021 and ADC124S021 chips. + ADC122S021, ADC124S021 and ROHM Semiconductor BD79104 chips. This driver can also be built as a module. If so, the module will be called ti-adc128s052. diff --git a/drivers/iio/adc/ti-adc128s052.c b/drivers/iio/adc/ti-adc128s052.c index fa0099356be7..d4721ad90f2c 100644 --- a/drivers/iio/adc/ti-adc128s052.c +++ b/drivers/iio/adc/ti-adc128s052.c @@ -21,6 +21,9 @@ struct adc128_configuration { const struct iio_chan_spec *channels; u8 num_channels; + const char *refname; + int num_other_regulators; + const char * const (*other_regulators)[]; }; struct adc128 { @@ -124,10 +127,28 @@ static const struct iio_chan_spec adc124s021_channels[] = { ADC128_VOLTAGE_CHANNEL(3), }; +static const char * const bd79104_regulators[] = { "iovdd" }; + static const struct adc128_configuration adc128_config[] = { - { adc128s052_channels, ARRAY_SIZE(adc128s052_channels) }, - { adc122s021_channels, ARRAY_SIZE(adc122s021_channels) }, - { adc124s021_channels, ARRAY_SIZE(adc124s021_channels) }, + { + .channels = adc128s052_channels, + .num_channels = ARRAY_SIZE(adc128s052_channels), + .refname = "vref", + }, { + .channels = adc122s021_channels, + .num_channels = ARRAY_SIZE(adc122s021_channels), + .refname = "vref", + }, { + .channels = adc124s021_channels, + .num_channels = ARRAY_SIZE(adc124s021_channels), + .refname = "vref", + }, { + .channels = adc128s052_channels, + .num_channels = ARRAY_SIZE(adc128s052_channels), + .refname = "vdd", + .other_regulators = &bd79104_regulators, + .num_other_regulators = 1, + }, }; static const struct iio_info adc128_info = { @@ -162,7 +183,7 @@ static int adc128_probe(struct spi_device *spi) indio_dev->channels = config->channels; indio_dev->num_channels = config->num_channels; - adc->reg = devm_regulator_get(&spi->dev, "vref"); + adc->reg = devm_regulator_get(&spi->dev, config->refname); if (IS_ERR(adc->reg)) return PTR_ERR(adc->reg); @@ -174,6 +195,15 @@ static int adc128_probe(struct spi_device *spi) if (ret) return ret; + if (config->num_other_regulators) { + ret = devm_regulator_bulk_get_enable(&spi->dev, + config->num_other_regulators, + *config->other_regulators); + if (ret) + return dev_err_probe(&spi->dev, ret, + "Failed to enable regulators\n"); + } + ret = devm_mutex_init(&spi->dev, &adc->lock); if (ret) return ret; @@ -189,6 +219,7 @@ static const struct of_device_id adc128_of_match[] = { { .compatible = "ti,adc124s021", .data = &adc128_config[2] }, { .compatible = "ti,adc124s051", .data = &adc128_config[2] }, { .compatible = "ti,adc124s101", .data = &adc128_config[2] }, + { .compatible = "rohm,bd79104", .data = &adc128_config[3] }, { } }; MODULE_DEVICE_TABLE(of, adc128_of_match); @@ -201,6 +232,7 @@ static const struct spi_device_id adc128_id[] = { { "adc124s021", (kernel_ulong_t)&adc128_config[2] }, { "adc124s051", (kernel_ulong_t)&adc128_config[2] }, { "adc124s101", (kernel_ulong_t)&adc128_config[2] }, + { "bd79104", (kernel_ulong_t)&adc128_config[3] }, { } }; MODULE_DEVICE_TABLE(spi, adc128_id); -- cgit v1.2.3 From 3716068cb84dafaa9776ea703c3998a330aae061 Mon Sep 17 00:00:00 2001 From: Matti Vaittinen Date: Mon, 7 Apr 2025 14:36:59 +0300 Subject: MAINTAINERS: A driver for TI/ROHM ADCs Add undersigned as a maintainer for the ti-adc128s052.c which supports a few TI's ADCs and the ROHM Semiconductor BD79704 ADC. Signed-off-by: Matti Vaittinen Link: https://patch.msgid.link/b303bf42b84e7ab143ff6a4a810f7d788e210b86.1744022065.git.mazziesaccount@gmail.com Signed-off-by: Jonathan Cameron --- MAINTAINERS | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index 030d90d38341..7d9605689d9b 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -24102,6 +24102,12 @@ M: Robert Richter S: Odd Fixes F: drivers/gpio/gpio-thunderx.c +TI ADC12xs and ROHM BD79104 ADC driver +M: Matti Vaittinen +S: Maintained +F: drivers/iio/adc/ti-adc128s052.c +L: linux-iio@vger.kernel.org + TI ADS1119 ADC DRIVER M: Francesco Dolcini M: João Paulo Gonçalves -- cgit v1.2.3 From 6b4079ccbfef213cb418e5a9cf4386393db1e6ea Mon Sep 17 00:00:00 2001 From: Jean-Baptiste Maneyrol Date: Thu, 10 Apr 2025 17:39:40 +0200 Subject: dt-bindings: iio: imu: icm42600: add interrupt naming support Add interrupt-names field for specifying interrupt pin configured. Chips are supporting up to 2 interrupt pins with configurable interrupt sources. Change interrupt to support 1 or 2 entries. Signed-off-by: Jean-Baptiste Maneyrol Acked-by: Conor Dooley Link: https://patch.msgid.link/20250410-iio-imu-inv-icm42600-rework-interrupt-using-names-v4-1-19e4e2f8f7eb@tdk.com Signed-off-by: Jonathan Cameron --- .../devicetree/bindings/iio/imu/invensense,icm42600.yaml | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/iio/imu/invensense,icm42600.yaml b/Documentation/devicetree/bindings/iio/imu/invensense,icm42600.yaml index 7e4492bbd027..d4d4e5c3d856 100644 --- a/Documentation/devicetree/bindings/iio/imu/invensense,icm42600.yaml +++ b/Documentation/devicetree/bindings/iio/imu/invensense,icm42600.yaml @@ -39,7 +39,16 @@ properties: maxItems: 1 interrupts: - maxItems: 1 + minItems: 1 + maxItems: 2 + + interrupt-names: + minItems: 1 + maxItems: 2 + items: + enum: + - INT1 + - INT2 drive-open-drain: type: boolean @@ -76,6 +85,7 @@ examples: reg = <0x68>; interrupt-parent = <&gpio2>; interrupts = <7 IRQ_TYPE_EDGE_FALLING>; + interrupt-names = "INT1"; vdd-supply = <&vdd>; vddio-supply = <&vddio>; }; @@ -95,6 +105,7 @@ examples: spi-cpol; interrupt-parent = <&gpio1>; interrupts = <2 IRQ_TYPE_EDGE_FALLING>; + interrupt-names = "INT1"; vdd-supply = <&vdd>; vddio-supply = <&vddio>; }; -- cgit v1.2.3 From b1ba43263e616342185c4d1ced2e96dee4f96d39 Mon Sep 17 00:00:00 2001 From: Jean-Baptiste Maneyrol Date: Thu, 10 Apr 2025 17:39:41 +0200 Subject: iio: imu: inv_icm42600: switch to use generic name irq get Use generic fwnode_irq_get_byname() for getting interrupt pin using interrupt name. Only INT1 is supported by the driver currently. If not found fallback to first defined interrupt to keep compatibility. Signed-off-by: Jean-Baptiste Maneyrol Link: https://patch.msgid.link/20250410-iio-imu-inv-icm42600-rework-interrupt-using-names-v4-2-19e4e2f8f7eb@tdk.com Signed-off-by: Jonathan Cameron --- drivers/iio/imu/inv_icm42600/inv_icm42600.h | 2 +- drivers/iio/imu/inv_icm42600/inv_icm42600_core.c | 14 ++++++++++++-- drivers/iio/imu/inv_icm42600/inv_icm42600_i2c.c | 3 +-- drivers/iio/imu/inv_icm42600/inv_icm42600_spi.c | 3 +-- 4 files changed, 15 insertions(+), 7 deletions(-) diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600.h b/drivers/iio/imu/inv_icm42600/inv_icm42600.h index 18787a43477b..f893dbe69965 100644 --- a/drivers/iio/imu/inv_icm42600/inv_icm42600.h +++ b/drivers/iio/imu/inv_icm42600/inv_icm42600.h @@ -426,7 +426,7 @@ int inv_icm42600_set_temp_conf(struct inv_icm42600_state *st, bool enable, int inv_icm42600_debugfs_reg(struct iio_dev *indio_dev, unsigned int reg, unsigned int writeval, unsigned int *readval); -int inv_icm42600_core_probe(struct regmap *regmap, int chip, int irq, +int inv_icm42600_core_probe(struct regmap *regmap, int chip, inv_icm42600_bus_setup bus_setup); struct iio_dev *inv_icm42600_gyro_init(struct inv_icm42600_state *st); diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_core.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_core.c index ef9875d3b79d..63d46619ebfa 100644 --- a/drivers/iio/imu/inv_icm42600/inv_icm42600_core.c +++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_core.c @@ -683,12 +683,13 @@ static void inv_icm42600_disable_pm(void *_data) pm_runtime_disable(dev); } -int inv_icm42600_core_probe(struct regmap *regmap, int chip, int irq, +int inv_icm42600_core_probe(struct regmap *regmap, int chip, inv_icm42600_bus_setup bus_setup) { struct device *dev = regmap_get_device(regmap); + struct fwnode_handle *fwnode = dev_fwnode(dev); struct inv_icm42600_state *st; - int irq_type; + int irq, irq_type; bool open_drain; int ret; @@ -697,6 +698,15 @@ int inv_icm42600_core_probe(struct regmap *regmap, int chip, int irq, return -ENODEV; } + /* get INT1 only supported interrupt or fallback to first interrupt */ + irq = fwnode_irq_get_byname(fwnode, "INT1"); + if (irq < 0 && irq != -EPROBE_DEFER) { + dev_info(dev, "no INT1 interrupt defined, fallback to first interrupt\n"); + irq = fwnode_irq_get(fwnode, 0); + } + if (irq < 0) + return dev_err_probe(dev, irq, "error missing INT1 interrupt\n"); + irq_type = irq_get_trigger_type(irq); if (!irq_type) irq_type = IRQF_TRIGGER_FALLING; diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_i2c.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_i2c.c index 04e440fe023a..a83a47a173d3 100644 --- a/drivers/iio/imu/inv_icm42600/inv_icm42600_i2c.c +++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_i2c.c @@ -67,8 +67,7 @@ static int inv_icm42600_probe(struct i2c_client *client) if (IS_ERR(regmap)) return PTR_ERR(regmap); - return inv_icm42600_core_probe(regmap, chip, client->irq, - inv_icm42600_i2c_bus_setup); + return inv_icm42600_core_probe(regmap, chip, inv_icm42600_i2c_bus_setup); } /* diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_spi.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_spi.c index 2bd2c4c8e50c..53956cd5534c 100644 --- a/drivers/iio/imu/inv_icm42600/inv_icm42600_spi.c +++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_spi.c @@ -64,8 +64,7 @@ static int inv_icm42600_probe(struct spi_device *spi) if (IS_ERR(regmap)) return PTR_ERR(regmap); - return inv_icm42600_core_probe(regmap, chip, spi->irq, - inv_icm42600_spi_bus_setup); + return inv_icm42600_core_probe(regmap, chip, inv_icm42600_spi_bus_setup); } /* -- cgit v1.2.3 From 029035636de37395124a602c830152ef39a35fab Mon Sep 17 00:00:00 2001 From: Angelo Dureghello Date: Wed, 9 Apr 2025 20:36:28 +0200 Subject: iio: dac: adi-axi-dac: add cntrl chan check MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add validity check on CNTRL_X channels (valid as 0 to 15). Reviewed-by: Nuno Sá Signed-off-by: Angelo Dureghello Link: https://patch.msgid.link/20250409-wip-bl-ad3552r-fixes-v5-1-fb429c3a6515@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/dac/adi-axi-dac.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/iio/dac/adi-axi-dac.c b/drivers/iio/dac/adi-axi-dac.c index 892d770aec69..f86acb98b0cf 100644 --- a/drivers/iio/dac/adi-axi-dac.c +++ b/drivers/iio/dac/adi-axi-dac.c @@ -84,6 +84,7 @@ #define AXI_DAC_CHAN_CNTRL_7_REG(c) (0x0418 + (c) * 0x40) #define AXI_DAC_CHAN_CNTRL_7_DATA_SEL GENMASK(3, 0) +#define AXI_DAC_CHAN_CNTRL_MAX 15 #define AXI_DAC_RD_ADDR(x) (BIT(7) | (x)) /* 360 degrees in rad */ @@ -186,6 +187,9 @@ static int __axi_dac_frequency_get(struct axi_dac_state *st, unsigned int chan, u32 reg, raw; int ret; + if (chan > AXI_DAC_CHAN_CNTRL_MAX) + return -EINVAL; + if (!st->dac_clk) { dev_err(st->dev, "Sampling rate is 0...\n"); return -EINVAL; @@ -230,6 +234,9 @@ static int axi_dac_scale_get(struct axi_dac_state *st, int ret, vals[2]; u32 reg, raw; + if (chan->channel > AXI_DAC_CHAN_CNTRL_MAX) + return -EINVAL; + if (tone_2) reg = AXI_DAC_CHAN_CNTRL_3_REG(chan->channel); else @@ -264,6 +271,9 @@ static int axi_dac_phase_get(struct axi_dac_state *st, u32 reg, raw, phase; int ret, vals[2]; + if (chan->channel > AXI_DAC_CHAN_CNTRL_MAX) + return -EINVAL; + if (tone_2) reg = AXI_DAC_CHAN_CNTRL_4_REG(chan->channel); else @@ -291,6 +301,9 @@ static int __axi_dac_frequency_set(struct axi_dac_state *st, unsigned int chan, u16 raw; int ret; + if (chan > AXI_DAC_CHAN_CNTRL_MAX) + return -EINVAL; + if (!sample_rate || freq > sample_rate / 2) { dev_err(st->dev, "Invalid frequency(%u) dac_clk(%llu)\n", freq, sample_rate); @@ -342,6 +355,9 @@ static int axi_dac_scale_set(struct axi_dac_state *st, u32 raw = 0, reg; int ret; + if (chan->channel > AXI_DAC_CHAN_CNTRL_MAX) + return -EINVAL; + ret = iio_str_to_fixpoint(buf, 100000, &integer, &frac); if (ret) return ret; @@ -385,6 +401,9 @@ static int axi_dac_phase_set(struct axi_dac_state *st, u32 raw, reg; int ret; + if (chan->channel > AXI_DAC_CHAN_CNTRL_MAX) + return -EINVAL; + ret = iio_str_to_fixpoint(buf, 100000, &integer, &frac); if (ret) return ret; @@ -493,6 +512,9 @@ static int axi_dac_data_source_set(struct iio_backend *back, unsigned int chan, { struct axi_dac_state *st = iio_backend_get_priv(back); + if (chan > AXI_DAC_CHAN_CNTRL_MAX) + return -EINVAL; + switch (data) { case IIO_BACKEND_INTERNAL_CONTINUOUS_WAVE: return regmap_update_bits(st->regmap, @@ -521,6 +543,8 @@ static int axi_dac_set_sample_rate(struct iio_backend *back, unsigned int chan, unsigned int freq; int ret, tone; + if (chan > AXI_DAC_CHAN_CNTRL_MAX) + return -EINVAL; if (!sample_rate) return -EINVAL; if (st->reg_config & AXI_DAC_CONFIG_DDS_DISABLE) -- cgit v1.2.3 From ede84c4556598b8899a93890d881bd407650c344 Mon Sep 17 00:00:00 2001 From: Angelo Dureghello Date: Wed, 9 Apr 2025 20:36:29 +0200 Subject: docs: iio: add documentation for ad3552r driver Add documentation for ad3552r driver, needed to describe the high-speed driver debugfs attributes and shows how the user may use them. Signed-off-by: Angelo Dureghello Link: https://patch.msgid.link/20250409-wip-bl-ad3552r-fixes-v5-2-fb429c3a6515@baylibre.com Signed-off-by: Jonathan Cameron --- Documentation/iio/ad3552r.rst | 72 +++++++++++++++++++++++++++++++++++++++++++ Documentation/iio/index.rst | 1 + MAINTAINERS | 1 + 3 files changed, 74 insertions(+) create mode 100644 Documentation/iio/ad3552r.rst diff --git a/Documentation/iio/ad3552r.rst b/Documentation/iio/ad3552r.rst new file mode 100644 index 000000000000..582507abe8c4 --- /dev/null +++ b/Documentation/iio/ad3552r.rst @@ -0,0 +1,72 @@ +.. SPDX-License-Identifier: GPL-2.0-only + +============== +AD3552R driver +============== + +Device driver for Analog Devices Inc. AD35XXR series of DACs. The module name +is ``ad3552r``. +With the same module name, two different driver variants are available, the +``generic spi`` variant, to be used with any classic SPI controllers, and the +``hs`` (high speed) variant, for an ADI ``axi-dac`` (IP core) based controller +that allows to reach the maximum sample rate supported from the DACs, using the +DMA transfer and all the SPI lines available (D/QDSPI).. +The high speed driver variant is intended to be used with the ``adi-axi-dac`` +backend support enabled, that is enabled by default when the driver is selected. + +Supported devices +================= + +* `AD3541R `_ +* `AD3542R `_ +* `AD3551R `_ +* `AD3552R `_ + +Wiring connections +================== + +Generic SPI +----------- +Use the classic SPI S_CLK/CS/SDO/SDI connection. + +High speed (using axi-dac backend) +---------------------------------- + +:: + + .-----------------. .-------. + | |--- D/QSPI -----| | + | DAC IP CORE |--- SPI S_CLK --| DAC | + | |--- SPI CS -----| | + | |--- LDAC -------| | + | |--- RESET ------| | + |_________________| |_______| + + +High speed features +=================== + +Device attributes +----------------- + +The following table shows the ad35xxr related device debug files, found in the +specific debugfs path ``/sys/kernel/debug/iio/iio:deviceX``. + ++-----------------------+------------------------------------------------------+ +| Debugfs device files | Description | ++-----------------------+------------------------------------------------------+ +| data_source | The used data source, as | +| | ``normal``, ``ramp-16bit``, etc. | ++-----------------------+------------------------------------------------------+ +| data_source_available | The available data sources. | ++-----------------------+------------------------------------------------------+ + +Usage examples +-------------- + +. code-block:: bash + root:/sys/bus/iio/devices/iio:device0# cat data_source + normal + root:/sys/bus/iio/devices/iio:device0# echo -n ramp-16bit > data_source + root:/sys/bus/iio/devices/iio:device0# cat data_source + ramp-16bit diff --git a/Documentation/iio/index.rst b/Documentation/iio/index.rst index bbb2edce8272..2d6afc5a8ed5 100644 --- a/Documentation/iio/index.rst +++ b/Documentation/iio/index.rst @@ -19,6 +19,7 @@ Industrial I/O Kernel Drivers .. toctree:: :maxdepth: 1 + ad3552r ad4000 ad4030 ad4695 diff --git a/MAINTAINERS b/MAINTAINERS index 7d9605689d9b..01079a189c93 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1306,6 +1306,7 @@ L: linux-iio@vger.kernel.org S: Supported W: https://ez.analog.com/linux-software-drivers F: Documentation/devicetree/bindings/iio/dac/adi,ad3552r.yaml +F: Documentation/iio/ad3552r.rst F: drivers/iio/dac/ad3552r.c ANALOG DEVICES INC AD4000 DRIVER -- cgit v1.2.3 From 2086321576425361e8ea0052d9ef6eec55f99a6f Mon Sep 17 00:00:00 2001 From: Angelo Dureghello Date: Wed, 9 Apr 2025 20:36:30 +0200 Subject: iio: backend: add support for data source get MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add backend support for getting the data source used. The ad3552r HDL implements an internal ramp generator, so adding the getter to allow data source get/set by debugfs. Reviewed-by: Nuno Sá Signed-off-by: Angelo Dureghello Link: https://patch.msgid.link/20250409-wip-bl-ad3552r-fixes-v5-3-fb429c3a6515@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/industrialio-backend.c | 28 ++++++++++++++++++++++++++++ include/linux/iio/backend.h | 5 +++++ 2 files changed, 33 insertions(+) diff --git a/drivers/iio/industrialio-backend.c b/drivers/iio/industrialio-backend.c index a43c8d1bb3d0..c1eb9ef9db08 100644 --- a/drivers/iio/industrialio-backend.c +++ b/drivers/iio/industrialio-backend.c @@ -380,6 +380,34 @@ int iio_backend_data_source_set(struct iio_backend *back, unsigned int chan, } EXPORT_SYMBOL_NS_GPL(iio_backend_data_source_set, "IIO_BACKEND"); +/** + * iio_backend_data_source_get - Get current data source + * @back: Backend device + * @chan: Channel number + * @data: Pointer to receive the current source value + * + * A given backend may have different sources to stream/sync data. This allows + * to know what source is in use. + * + * RETURNS: + * 0 on success, negative error number on failure. + */ +int iio_backend_data_source_get(struct iio_backend *back, unsigned int chan, + enum iio_backend_data_source *data) +{ + int ret; + + ret = iio_backend_op_call(back, data_source_get, chan, data); + if (ret) + return ret; + + if (*data >= IIO_BACKEND_DATA_SOURCE_MAX) + return -EINVAL; + + return 0; +} +EXPORT_SYMBOL_NS_GPL(iio_backend_data_source_get, "IIO_BACKEND"); + /** * iio_backend_set_sampling_freq - Set channel sampling rate * @back: Backend device diff --git a/include/linux/iio/backend.h b/include/linux/iio/backend.h index e45b7dfbec35..e59d909cb659 100644 --- a/include/linux/iio/backend.h +++ b/include/linux/iio/backend.h @@ -84,6 +84,7 @@ enum iio_backend_interface_type { * @chan_disable: Disable one channel. * @data_format_set: Configure the data format for a specific channel. * @data_source_set: Configure the data source for a specific channel. + * @data_source_get: Data source getter for a specific channel. * @set_sample_rate: Configure the sampling rate for a specific channel. * @test_pattern_set: Configure a test pattern. * @chan_status: Get the channel status. @@ -115,6 +116,8 @@ struct iio_backend_ops { const struct iio_backend_data_fmt *data); int (*data_source_set)(struct iio_backend *back, unsigned int chan, enum iio_backend_data_source data); + int (*data_source_get)(struct iio_backend *back, unsigned int chan, + enum iio_backend_data_source *data); int (*set_sample_rate)(struct iio_backend *back, unsigned int chan, u64 sample_rate_hz); int (*test_pattern_set)(struct iio_backend *back, @@ -176,6 +179,8 @@ int iio_backend_data_format_set(struct iio_backend *back, unsigned int chan, const struct iio_backend_data_fmt *data); int iio_backend_data_source_set(struct iio_backend *back, unsigned int chan, enum iio_backend_data_source data); +int iio_backend_data_source_get(struct iio_backend *back, unsigned int chan, + enum iio_backend_data_source *data); int iio_backend_set_sampling_freq(struct iio_backend *back, unsigned int chan, u64 sample_rate_hz); int iio_backend_test_pattern_set(struct iio_backend *back, -- cgit v1.2.3 From ca74d0eb06e0e05426f2494aa2f4c392366c2d8a Mon Sep 17 00:00:00 2001 From: Angelo Dureghello Date: Wed, 9 Apr 2025 20:36:31 +0200 Subject: iio: dac: adi-axi-dac: add data source get MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add data source getter. Reviewed-by: Nuno Sá Signed-off-by: Angelo Dureghello Link: https://patch.msgid.link/20250409-wip-bl-ad3552r-fixes-v5-4-fb429c3a6515@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/dac/adi-axi-dac.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/drivers/iio/dac/adi-axi-dac.c b/drivers/iio/dac/adi-axi-dac.c index f86acb98b0cf..8ed5ad1fa24c 100644 --- a/drivers/iio/dac/adi-axi-dac.c +++ b/drivers/iio/dac/adi-axi-dac.c @@ -536,6 +536,35 @@ static int axi_dac_data_source_set(struct iio_backend *back, unsigned int chan, } } +static int axi_dac_data_source_get(struct iio_backend *back, unsigned int chan, + enum iio_backend_data_source *data) +{ + struct axi_dac_state *st = iio_backend_get_priv(back); + int ret; + u32 val; + + if (chan > AXI_DAC_CHAN_CNTRL_MAX) + return -EINVAL; + + ret = regmap_read(st->regmap, AXI_DAC_CHAN_CNTRL_7_REG(chan), &val); + if (ret) + return ret; + + switch (val) { + case AXI_DAC_DATA_INTERNAL_TONE: + *data = IIO_BACKEND_INTERNAL_CONTINUOUS_WAVE; + return 0; + case AXI_DAC_DATA_DMA: + *data = IIO_BACKEND_EXTERNAL; + return 0; + case AXI_DAC_DATA_INTERNAL_RAMP_16BIT: + *data = IIO_BACKEND_INTERNAL_RAMP_16BIT; + return 0; + default: + return -EIO; + } +} + static int axi_dac_set_sample_rate(struct iio_backend *back, unsigned int chan, u64 sample_rate) { @@ -818,6 +847,7 @@ static const struct iio_backend_ops axi_ad3552r_ops = { .request_buffer = axi_dac_request_buffer, .free_buffer = axi_dac_free_buffer, .data_source_set = axi_dac_data_source_set, + .data_source_get = axi_dac_data_source_get, .ddr_enable = axi_dac_ddr_enable, .ddr_disable = axi_dac_ddr_disable, .data_stream_enable = axi_dac_data_stream_enable, -- cgit v1.2.3 From b1c5d68ea66e511dfb16cd0e6a730488bd3c3317 Mon Sep 17 00:00:00 2001 From: Angelo Dureghello Date: Wed, 9 Apr 2025 20:36:32 +0200 Subject: iio: dac: ad3552r-hs: add support for internal ramp The ad3552r can be feeded from the HDL controller by an internally generated 16bit ramp, useful for debug pourposes. Add debugfs a file to enable or disable it. Signed-off-by: Angelo Dureghello Link: https://patch.msgid.link/20250409-wip-bl-ad3552r-fixes-v5-5-fb429c3a6515@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/dac/ad3552r-hs.c | 162 +++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 156 insertions(+), 6 deletions(-) diff --git a/drivers/iio/dac/ad3552r-hs.c b/drivers/iio/dac/ad3552r-hs.c index 37397e188f22..41b96b48ba98 100644 --- a/drivers/iio/dac/ad3552r-hs.c +++ b/drivers/iio/dac/ad3552r-hs.c @@ -7,6 +7,7 @@ */ #include +#include #include #include #include @@ -54,6 +55,18 @@ struct ad3552r_hs_state { struct ad3552r_hs_platform_data *data; /* INTERFACE_CONFIG_D register cache, in DDR we cannot read values. */ u32 config_d; + /* Protects backend I/O operations from concurrent accesses. */ + struct mutex lock; +}; + +enum ad3552r_sources { + AD3552R_SRC_NORMAL, + AD3552R_SRC_RAMP_16BIT, +}; + +static const char * const dbgfs_attr_source[] = { + [AD3552R_SRC_NORMAL] = "normal", + [AD3552R_SRC_RAMP_16BIT] = "ramp-16bit", }; static int ad3552r_hs_reg_read(struct ad3552r_hs_state *st, u32 reg, u32 *val, @@ -65,6 +78,20 @@ static int ad3552r_hs_reg_read(struct ad3552r_hs_state *st, u32 reg, u32 *val, return st->data->bus_reg_read(st->back, reg, val, xfer_size); } +static int ad3552r_hs_set_data_source(struct ad3552r_hs_state *st, + enum iio_backend_data_source type) +{ + int i, ret; + + for (i = 0; i < st->model_data->num_hw_channels; ++i) { + ret = iio_backend_data_source_set(st->back, i, type); + if (ret) + return ret; + } + + return 0; +} + static int ad3552r_hs_update_reg_bits(struct ad3552r_hs_state *st, u32 reg, u32 mask, u32 val, size_t xfer_size) { @@ -483,6 +510,103 @@ static int ad3552r_hs_reg_access(struct iio_dev *indio_dev, unsigned int reg, return st->data->bus_reg_write(st->back, reg, writeval, 1); } +static ssize_t ad3552r_hs_show_data_source(struct file *f, char __user *userbuf, + size_t count, loff_t *ppos) +{ + struct ad3552r_hs_state *st = file_inode(f)->i_private; + enum iio_backend_data_source type; + int idx, ret; + + guard(mutex)(&st->lock); + + ret = iio_backend_data_source_get(st->back, 0, &type); + if (ret) + return ret; + + switch (type) { + case IIO_BACKEND_INTERNAL_RAMP_16BIT: + idx = AD3552R_SRC_RAMP_16BIT; + break; + case IIO_BACKEND_EXTERNAL: + idx = AD3552R_SRC_NORMAL; + break; + default: + return -EINVAL; + } + + return simple_read_from_buffer(userbuf, count, ppos, + dbgfs_attr_source[idx], + strlen(dbgfs_attr_source[idx])); +} + +static ssize_t ad3552r_hs_write_data_source(struct file *f, + const char __user *userbuf, + size_t count, loff_t *ppos) +{ + struct ad3552r_hs_state *st = file_inode(f)->i_private; + char buf[64]; + int ret, source; + + guard(mutex)(&st->lock); + + ret = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, userbuf, + count); + if (ret < 0) + return ret; + + buf[count] = '\0'; + + ret = match_string(dbgfs_attr_source, ARRAY_SIZE(dbgfs_attr_source), + buf); + if (ret < 0) + return ret; + + switch (ret) { + case AD3552R_SRC_RAMP_16BIT: + source = IIO_BACKEND_INTERNAL_RAMP_16BIT; + break; + case AD3552R_SRC_NORMAL: + source = IIO_BACKEND_EXTERNAL; + break; + default: + return -EINVAL; + } + + ret = ad3552r_hs_set_data_source(st, source); + if (ret) + return ret; + + return count; +} + +static ssize_t ad3552r_hs_show_data_source_avail(struct file *f, + char __user *userbuf, + size_t count, loff_t *ppos) +{ + ssize_t len = 0; + char buf[128]; + int i; + + for (i = 0; i < ARRAY_SIZE(dbgfs_attr_source); i++) { + len += scnprintf(buf + len, PAGE_SIZE - len, "%s ", + dbgfs_attr_source[i]); + } + buf[len - 1] = '\n'; + + return simple_read_from_buffer(userbuf, count, ppos, buf, len); +} + +static const struct file_operations ad3552r_hs_data_source_fops = { + .owner = THIS_MODULE, + .write = ad3552r_hs_write_data_source, + .read = ad3552r_hs_show_data_source, +}; + +static const struct file_operations ad3552r_hs_data_source_avail_fops = { + .owner = THIS_MODULE, + .read = ad3552r_hs_show_data_source_avail, +}; + static int ad3552r_hs_setup(struct ad3552r_hs_state *st) { u16 id; @@ -550,11 +674,7 @@ static int ad3552r_hs_setup(struct ad3552r_hs_state *st) if (ret) return ret; - ret = iio_backend_data_source_set(st->back, 0, IIO_BACKEND_EXTERNAL); - if (ret) - return ret; - - ret = iio_backend_data_source_set(st->back, 1, IIO_BACKEND_EXTERNAL); + ret = ad3552r_hs_set_data_source(st, IIO_BACKEND_EXTERNAL); if (ret) return ret; @@ -661,6 +781,26 @@ static const struct iio_info ad3552r_hs_info = { .debugfs_reg_access = &ad3552r_hs_reg_access, }; +static void ad3552r_hs_debugfs_init(struct iio_dev *indio_dev) +{ + struct ad3552r_hs_state *st = iio_priv(indio_dev); + struct dentry *d = iio_get_debugfs_dentry(indio_dev); + + if (!IS_ENABLED(CONFIG_DEBUG_FS)) + return; + + d = iio_get_debugfs_dentry(indio_dev); + if (!d) { + dev_warn(st->dev, "can't set debugfs in driver dir\n"); + return; + } + + debugfs_create_file("data_source", 0600, d, st, + &ad3552r_hs_data_source_fops); + debugfs_create_file("data_source_available", 0600, d, st, + &ad3552r_hs_data_source_avail_fops); +} + static int ad3552r_hs_probe(struct platform_device *pdev) { struct ad3552r_hs_state *st; @@ -705,7 +845,17 @@ static int ad3552r_hs_probe(struct platform_device *pdev) if (ret) return ret; - return devm_iio_device_register(&pdev->dev, indio_dev); + ret = devm_iio_device_register(&pdev->dev, indio_dev); + if (ret) + return ret; + + ret = devm_mutex_init(&pdev->dev, &st->lock); + if (ret) + return ret; + + ad3552r_hs_debugfs_init(indio_dev); + + return ret; } static const struct of_device_id ad3552r_hs_of_id[] = { -- cgit v1.2.3 From e5cdb098a3cb165d52282ffc3a6448642953ea13 Mon Sep 17 00:00:00 2001 From: Purva Yeshi Date: Thu, 10 Apr 2025 22:34:08 +0530 Subject: iio: adc: ad_sigma_delta: Fix use of uninitialized status_pos Fix Smatch-detected issue: drivers/iio/adc/ad_sigma_delta.c:604 ad_sd_trigger_handler() error: uninitialized symbol 'status_pos'. The variable `status_pos` was only initialized in specific switch cases (1, 2, 3, 4), which could leave it uninitialized if `reg_size` had an unexpected value. Fix by adding a default case to the switch block to catch unexpected values of `reg_size`. Use `dev_err_ratelimited()` for error logging and `goto irq_handled` instead of returning early. Signed-off-by: Purva Yeshi Link: https://patch.msgid.link/20250410170408.8585-1-purvayeshi550@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad_sigma_delta.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/iio/adc/ad_sigma_delta.c b/drivers/iio/adc/ad_sigma_delta.c index 6c37f8e21120..4c5f8d29a559 100644 --- a/drivers/iio/adc/ad_sigma_delta.c +++ b/drivers/iio/adc/ad_sigma_delta.c @@ -587,6 +587,10 @@ static irqreturn_t ad_sd_trigger_handler(int irq, void *p) * byte set to zero. */ ad_sd_read_reg_raw(sigma_delta, data_reg, transfer_size, &data[1]); break; + + default: + dev_err_ratelimited(&indio_dev->dev, "Unsupported reg_size: %u\n", reg_size); + goto irq_handled; } /* -- cgit v1.2.3 From 3f4bc0b11684ed1ebb46c081b77f1135869bf3dc Mon Sep 17 00:00:00 2001 From: Jonathan Santos Date: Fri, 11 Apr 2025 12:56:56 -0300 Subject: iio: adc: ad7768-1: convert driver to use regmap Convert the AD7768-1 driver to use the regmap API for register access. This change simplifies and standardizes register interactions, reducing code duplication and improving maintainability. Create two regmap configurations, one for 8-bit register values and other for 24-bit register values. Since we are using regmap now, define the remaining registers from 0x32 to 0x34. Reviewed-by: David Lechner Signed-off-by: Jonathan Santos Link: https://patch.msgid.link/aec9e5452c1ac16d5379a80dfce97c00d85614a2.1744325346.git.Jonathan.Santos@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/Kconfig | 1 + drivers/iio/adc/ad7768-1.c | 160 ++++++++++++++++++++++++++++++--------------- 2 files changed, 110 insertions(+), 51 deletions(-) diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig index b8e097f21a59..ad06cf556785 100644 --- a/drivers/iio/adc/Kconfig +++ b/drivers/iio/adc/Kconfig @@ -329,6 +329,7 @@ config AD7766 config AD7768_1 tristate "Analog Devices AD7768-1 ADC driver" depends on SPI + select REGMAP_SPI select IIO_BUFFER select IIO_TRIGGER select IIO_TRIGGERED_BUFFER diff --git a/drivers/iio/adc/ad7768-1.c b/drivers/iio/adc/ad7768-1.c index 5a863005aca6..017d24d0bcd8 100644 --- a/drivers/iio/adc/ad7768-1.c +++ b/drivers/iio/adc/ad7768-1.c @@ -12,6 +12,7 @@ #include #include #include +#include #include #include #include @@ -53,12 +54,15 @@ #define AD7768_REG_SPI_DIAG_ENABLE 0x28 #define AD7768_REG_ADC_DIAG_ENABLE 0x29 #define AD7768_REG_DIG_DIAG_ENABLE 0x2A -#define AD7768_REG_ADC_DATA 0x2C +#define AD7768_REG24_ADC_DATA 0x2C #define AD7768_REG_MASTER_STATUS 0x2D #define AD7768_REG_SPI_DIAG_STATUS 0x2E #define AD7768_REG_ADC_DIAG_STATUS 0x2F #define AD7768_REG_DIG_DIAG_STATUS 0x30 #define AD7768_REG_MCLK_COUNTER 0x31 +#define AD7768_REG_COEFF_CONTROL 0x32 +#define AD7768_REG24_COEFF_DATA 0x33 +#define AD7768_REG_ACCESS_KEY 0x34 /* AD7768_REG_POWER_CLOCK */ #define AD7768_PWR_MCLK_DIV_MSK GENMASK(5, 4) @@ -76,9 +80,6 @@ #define AD7768_CONV_MODE_MSK GENMASK(2, 0) #define AD7768_CONV_MODE(x) FIELD_PREP(AD7768_CONV_MODE_MSK, x) -#define AD7768_RD_FLAG_MSK(x) (BIT(6) | ((x) & 0x3F)) -#define AD7768_WR_FLAG_MSK(x) ((x) & 0x3F) - enum ad7768_conv_mode { AD7768_CONTINUOUS, AD7768_ONE_SHOT, @@ -153,6 +154,8 @@ static const struct iio_chan_spec ad7768_channels[] = { struct ad7768_state { struct spi_device *spi; + struct regmap *regmap; + struct regmap *regmap24; struct regulator *vref; struct clk *mclk; unsigned int mclk_freq; @@ -175,46 +178,82 @@ struct ad7768_state { } data __aligned(IIO_DMA_MINALIGN); }; -static int ad7768_spi_reg_read(struct ad7768_state *st, unsigned int addr, - unsigned int len) -{ - unsigned int shift; - int ret; +static const struct regmap_range ad7768_regmap_rd_ranges[] = { + regmap_reg_range(AD7768_REG_CHIP_TYPE, AD7768_REG_CHIP_GRADE), + regmap_reg_range(AD7768_REG_SCRATCH_PAD, AD7768_REG_SCRATCH_PAD), + regmap_reg_range(AD7768_REG_VENDOR_L, AD7768_REG_VENDOR_H), + regmap_reg_range(AD7768_REG_INTERFACE_FORMAT, AD7768_REG_GAIN_LO), + regmap_reg_range(AD7768_REG_SPI_DIAG_ENABLE, AD7768_REG_DIG_DIAG_ENABLE), + regmap_reg_range(AD7768_REG_MASTER_STATUS, AD7768_REG_COEFF_CONTROL), + regmap_reg_range(AD7768_REG_ACCESS_KEY, AD7768_REG_ACCESS_KEY), +}; - shift = 32 - (8 * len); - st->data.d8[0] = AD7768_RD_FLAG_MSK(addr); +static const struct regmap_access_table ad7768_regmap_rd_table = { + .yes_ranges = ad7768_regmap_rd_ranges, + .n_yes_ranges = ARRAY_SIZE(ad7768_regmap_rd_ranges), +}; - ret = spi_write_then_read(st->spi, st->data.d8, 1, - &st->data.d32, len); - if (ret < 0) - return ret; +static const struct regmap_range ad7768_regmap_wr_ranges[] = { + regmap_reg_range(AD7768_REG_SCRATCH_PAD, AD7768_REG_SCRATCH_PAD), + regmap_reg_range(AD7768_REG_INTERFACE_FORMAT, AD7768_REG_GPIO_WRITE), + regmap_reg_range(AD7768_REG_OFFSET_HI, AD7768_REG_GAIN_LO), + regmap_reg_range(AD7768_REG_SPI_DIAG_ENABLE, AD7768_REG_DIG_DIAG_ENABLE), + regmap_reg_range(AD7768_REG_SPI_DIAG_STATUS, AD7768_REG_SPI_DIAG_STATUS), + regmap_reg_range(AD7768_REG_COEFF_CONTROL, AD7768_REG_COEFF_CONTROL), + regmap_reg_range(AD7768_REG_ACCESS_KEY, AD7768_REG_ACCESS_KEY), +}; - return (be32_to_cpu(st->data.d32) >> shift); -} +static const struct regmap_access_table ad7768_regmap_wr_table = { + .yes_ranges = ad7768_regmap_wr_ranges, + .n_yes_ranges = ARRAY_SIZE(ad7768_regmap_wr_ranges), +}; -static int ad7768_spi_reg_write(struct ad7768_state *st, - unsigned int addr, - unsigned int val) -{ - st->data.d8[0] = AD7768_WR_FLAG_MSK(addr); - st->data.d8[1] = val & 0xFF; +static const struct regmap_config ad7768_regmap_config = { + .name = "ad7768-1-8", + .reg_bits = 8, + .val_bits = 8, + .read_flag_mask = BIT(6), + .rd_table = &ad7768_regmap_rd_table, + .wr_table = &ad7768_regmap_wr_table, + .max_register = AD7768_REG_ACCESS_KEY, + .use_single_write = true, + .use_single_read = true, +}; - return spi_write(st->spi, st->data.d8, 2); -} +static const struct regmap_range ad7768_regmap24_rd_ranges[] = { + regmap_reg_range(AD7768_REG24_ADC_DATA, AD7768_REG24_ADC_DATA), + regmap_reg_range(AD7768_REG24_COEFF_DATA, AD7768_REG24_COEFF_DATA), +}; -static int ad7768_set_mode(struct ad7768_state *st, - enum ad7768_conv_mode mode) -{ - int regval; +static const struct regmap_access_table ad7768_regmap24_rd_table = { + .yes_ranges = ad7768_regmap24_rd_ranges, + .n_yes_ranges = ARRAY_SIZE(ad7768_regmap24_rd_ranges), +}; - regval = ad7768_spi_reg_read(st, AD7768_REG_CONVERSION, 1); - if (regval < 0) - return regval; +static const struct regmap_range ad7768_regmap24_wr_ranges[] = { + regmap_reg_range(AD7768_REG24_COEFF_DATA, AD7768_REG24_COEFF_DATA), +}; - regval &= ~AD7768_CONV_MODE_MSK; - regval |= AD7768_CONV_MODE(mode); +static const struct regmap_access_table ad7768_regmap24_wr_table = { + .yes_ranges = ad7768_regmap24_wr_ranges, + .n_yes_ranges = ARRAY_SIZE(ad7768_regmap24_wr_ranges), +}; - return ad7768_spi_reg_write(st, AD7768_REG_CONVERSION, regval); +static const struct regmap_config ad7768_regmap24_config = { + .name = "ad7768-1-24", + .reg_bits = 8, + .val_bits = 24, + .read_flag_mask = BIT(6), + .rd_table = &ad7768_regmap24_rd_table, + .wr_table = &ad7768_regmap24_wr_table, + .max_register = AD7768_REG24_COEFF_DATA, +}; + +static int ad7768_set_mode(struct ad7768_state *st, + enum ad7768_conv_mode mode) +{ + return regmap_update_bits(st->regmap, AD7768_REG_CONVERSION, + AD7768_CONV_MODE_MSK, AD7768_CONV_MODE(mode)); } static int ad7768_scan_direct(struct iio_dev *indio_dev) @@ -233,9 +272,10 @@ static int ad7768_scan_direct(struct iio_dev *indio_dev) if (!ret) return -ETIMEDOUT; - readval = ad7768_spi_reg_read(st, AD7768_REG_ADC_DATA, 3); - if (readval < 0) - return readval; + ret = regmap_read(st->regmap24, AD7768_REG24_ADC_DATA, &readval); + if (ret) + return ret; + /* * Any SPI configuration of the AD7768-1 can only be * performed in continuous conversion mode. @@ -258,16 +298,23 @@ static int ad7768_reg_access(struct iio_dev *indio_dev, if (!iio_device_claim_direct(indio_dev)) return -EBUSY; + ret = -EINVAL; if (readval) { - ret = ad7768_spi_reg_read(st, reg, 1); - if (ret < 0) - goto err_release; - *readval = ret; - ret = 0; + if (regmap_check_range_table(st->regmap, reg, &ad7768_regmap_rd_table)) + ret = regmap_read(st->regmap, reg, readval); + + if (regmap_check_range_table(st->regmap24, reg, &ad7768_regmap24_rd_table)) + ret = regmap_read(st->regmap24, reg, readval); + } else { - ret = ad7768_spi_reg_write(st, reg, writeval); + if (regmap_check_range_table(st->regmap, reg, &ad7768_regmap_wr_table)) + ret = regmap_write(st->regmap, reg, writeval); + + if (regmap_check_range_table(st->regmap24, reg, &ad7768_regmap24_wr_table)) + ret = regmap_write(st->regmap24, reg, writeval); + } -err_release: + iio_device_release_direct(indio_dev); return ret; @@ -284,7 +331,7 @@ static int ad7768_set_dig_fil(struct ad7768_state *st, else mode = AD7768_DIG_FIL_DEC_RATE(dec_rate); - ret = ad7768_spi_reg_write(st, AD7768_REG_DIGITAL_FILTER, mode); + ret = regmap_write(st->regmap, AD7768_REG_DIGITAL_FILTER, mode); if (ret < 0) return ret; @@ -321,7 +368,7 @@ static int ad7768_set_freq(struct ad7768_state *st, */ pwr_mode = AD7768_PWR_MCLK_DIV(ad7768_clk_config[idx].mclk_div) | AD7768_PWR_PWRMODE(ad7768_clk_config[idx].pwrmode); - ret = ad7768_spi_reg_write(st, AD7768_REG_POWER_CLOCK, pwr_mode); + ret = regmap_write(st->regmap, AD7768_REG_POWER_CLOCK, pwr_mode); if (ret < 0) return ret; @@ -446,11 +493,11 @@ static int ad7768_setup(struct ad7768_state *st) * to 10. When the sequence is detected, the reset occurs. * See the datasheet, page 70. */ - ret = ad7768_spi_reg_write(st, AD7768_REG_SYNC_RESET, 0x3); + ret = regmap_write(st->regmap, AD7768_REG_SYNC_RESET, 0x3); if (ret) return ret; - ret = ad7768_spi_reg_write(st, AD7768_REG_SYNC_RESET, 0x2); + ret = regmap_write(st->regmap, AD7768_REG_SYNC_RESET, 0x2); if (ret) return ret; @@ -505,18 +552,19 @@ static int ad7768_buffer_postenable(struct iio_dev *indio_dev) * continuous read mode. Subsequent data reads do not require an * initial 8-bit write to query the ADC_DATA register. */ - return ad7768_spi_reg_write(st, AD7768_REG_INTERFACE_FORMAT, 0x01); + return regmap_write(st->regmap, AD7768_REG_INTERFACE_FORMAT, 0x01); } static int ad7768_buffer_predisable(struct iio_dev *indio_dev) { struct ad7768_state *st = iio_priv(indio_dev); + unsigned int unused; /* * To exit continuous read mode, perform a single read of the ADC_DATA * reg (0x2C), which allows further configuration of the device. */ - return ad7768_spi_reg_read(st, AD7768_REG_ADC_DATA, 3); + return regmap_read(st->regmap24, AD7768_REG24_ADC_DATA, &unused); } static const struct iio_buffer_setup_ops ad7768_buffer_ops = { @@ -587,6 +635,16 @@ static int ad7768_probe(struct spi_device *spi) st->spi = spi; + st->regmap = devm_regmap_init_spi(spi, &ad7768_regmap_config); + if (IS_ERR(st->regmap)) + return dev_err_probe(&spi->dev, PTR_ERR(st->regmap), + "Failed to initialize regmap"); + + st->regmap24 = devm_regmap_init_spi(spi, &ad7768_regmap24_config); + if (IS_ERR(st->regmap24)) + return dev_err_probe(&spi->dev, PTR_ERR(st->regmap24), + "Failed to initialize regmap24"); + st->vref = devm_regulator_get(&spi->dev, "vref"); if (IS_ERR(st->vref)) return PTR_ERR(st->vref); -- cgit v1.2.3 From 1fa0f4ea5660bf4731cf8f51c4ad923070b27fc8 Mon Sep 17 00:00:00 2001 From: Sergiu Cuciurean Date: Fri, 11 Apr 2025 12:57:09 -0300 Subject: iio: adc: ad7768-1: Add reset gpio Implement asynchronous hardware reset GPIO. Reviewed-by: David Lechner Reviewed-by: Marcelo Schmitt Signed-off-by: Sergiu Cuciurean Co-developed-by: Jonathan Santos Signed-off-by: Jonathan Santos Link: https://patch.msgid.link/25a413babeddf29583f1c26abf4234dfd606a595.1744325346.git.Jonathan.Santos@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7768-1.c | 36 ++++++++++++++++++++++++------------ 1 file changed, 24 insertions(+), 12 deletions(-) diff --git a/drivers/iio/adc/ad7768-1.c b/drivers/iio/adc/ad7768-1.c index 017d24d0bcd8..34712d3756e2 100644 --- a/drivers/iio/adc/ad7768-1.c +++ b/drivers/iio/adc/ad7768-1.c @@ -163,6 +163,7 @@ struct ad7768_state { struct completion completion; struct iio_trigger *trig; struct gpio_desc *gpio_sync_in; + struct gpio_desc *gpio_reset; const char *labels[ARRAY_SIZE(ad7768_channels)]; /* * DMA (thus cache coherency maintenance) may require the @@ -487,19 +488,30 @@ static int ad7768_setup(struct ad7768_state *st) { int ret; - /* - * Two writes to the SPI_RESET[1:0] bits are required to initiate - * a software reset. The bits must first be set to 11, and then - * to 10. When the sequence is detected, the reset occurs. - * See the datasheet, page 70. - */ - ret = regmap_write(st->regmap, AD7768_REG_SYNC_RESET, 0x3); - if (ret) - return ret; + st->gpio_reset = devm_gpiod_get_optional(&st->spi->dev, "reset", + GPIOD_OUT_HIGH); + if (IS_ERR(st->gpio_reset)) + return PTR_ERR(st->gpio_reset); - ret = regmap_write(st->regmap, AD7768_REG_SYNC_RESET, 0x2); - if (ret) - return ret; + if (st->gpio_reset) { + fsleep(10); + gpiod_set_value_cansleep(st->gpio_reset, 0); + fsleep(200); + } else { + /* + * Two writes to the SPI_RESET[1:0] bits are required to initiate + * a software reset. The bits must first be set to 11, and then + * to 10. When the sequence is detected, the reset occurs. + * See the datasheet, page 70. + */ + ret = regmap_write(st->regmap, AD7768_REG_SYNC_RESET, 0x3); + if (ret) + return ret; + + ret = regmap_write(st->regmap, AD7768_REG_SYNC_RESET, 0x2); + if (ret) + return ret; + } st->gpio_sync_in = devm_gpiod_get(&st->spi->dev, "adi,sync-in", GPIOD_OUT_LOW); -- cgit v1.2.3 From ef24ea86eff5dc82f877e2057330da3c463f17cf Mon Sep 17 00:00:00 2001 From: Sergiu Cuciurean Date: Fri, 11 Apr 2025 12:57:23 -0300 Subject: iio: adc: ad7768-1: Move buffer allocation to a separate function This change moves the buffer allocation and related trigger allocation in a separate function, making space for adding another type of iio buffer if needed. Reviewed-by: Marcelo Schmitt Reviewed-by: David Lechner Signed-off-by: Sergiu Cuciurean Signed-off-by: Jonathan Santos Link: https://patch.msgid.link/11c1777b406875ce1a7216dc4b094ff99af8da7f.1744325346.git.Jonathan.Santos@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7768-1.c | 44 ++++++++++++++++++++++++++------------------ 1 file changed, 26 insertions(+), 18 deletions(-) diff --git a/drivers/iio/adc/ad7768-1.c b/drivers/iio/adc/ad7768-1.c index 34712d3756e2..66087fabe181 100644 --- a/drivers/iio/adc/ad7768-1.c +++ b/drivers/iio/adc/ad7768-1.c @@ -619,6 +619,31 @@ static int ad7768_set_channel_label(struct iio_dev *indio_dev, return 0; } +static int ad7768_triggered_buffer_alloc(struct iio_dev *indio_dev) +{ + struct ad7768_state *st = iio_priv(indio_dev); + int ret; + + st->trig = devm_iio_trigger_alloc(indio_dev->dev.parent, "%s-dev%d", + indio_dev->name, + iio_device_id(indio_dev)); + if (!st->trig) + return -ENOMEM; + + st->trig->ops = &ad7768_trigger_ops; + iio_trigger_set_drvdata(st->trig, indio_dev); + ret = devm_iio_trigger_register(indio_dev->dev.parent, st->trig); + if (ret) + return ret; + + indio_dev->trig = iio_trigger_get(st->trig); + + return devm_iio_triggered_buffer_setup(indio_dev->dev.parent, indio_dev, + &iio_pollfunc_store_time, + &ad7768_trigger_handler, + &ad7768_buffer_ops); +} + static int ad7768_probe(struct spi_device *spi) { struct ad7768_state *st; @@ -689,20 +714,6 @@ static int ad7768_probe(struct spi_device *spi) return ret; } - st->trig = devm_iio_trigger_alloc(&spi->dev, "%s-dev%d", - indio_dev->name, - iio_device_id(indio_dev)); - if (!st->trig) - return -ENOMEM; - - st->trig->ops = &ad7768_trigger_ops; - iio_trigger_set_drvdata(st->trig, indio_dev); - ret = devm_iio_trigger_register(&spi->dev, st->trig); - if (ret) - return ret; - - indio_dev->trig = iio_trigger_get(st->trig); - init_completion(&st->completion); ret = ad7768_set_channel_label(indio_dev, ARRAY_SIZE(ad7768_channels)); @@ -716,10 +727,7 @@ static int ad7768_probe(struct spi_device *spi) if (ret) return ret; - ret = devm_iio_triggered_buffer_setup(&spi->dev, indio_dev, - &iio_pollfunc_store_time, - &ad7768_trigger_handler, - &ad7768_buffer_ops); + ret = ad7768_triggered_buffer_alloc(indio_dev); if (ret) return ret; -- cgit v1.2.3 From 70788d26ae1c482dba843efcc0cf166c2ba36a38 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Fri, 11 Apr 2025 15:49:34 -0500 Subject: iio: normalize array sentinel style Use `\t(\{ ?\},|\{\}|\{\s*/\*.*\*/\s*\},?)$` regex to find and replace the array sentinel in all IIO drivers to the same style. For some time, we've been trying to consistently use `{ }` (no trailing comma, no comment, one space between braces) for array sentinels in the IIO subsystem. Still nearly 50% of existing code uses a different style. To save reviewers from having to request this trivial change as frequently, let's normalize the style in all existing IIO drivers. At least when code is copy/pasted to new drivers, the style will be consistent. Signed-off-by: David Lechner Reviewed-by: Andy Shevchenko Link: https://patch.msgid.link/20250411-iio-sentinel-normalization-v1-1-d293de3e3d93@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/accel/adxl367_i2c.c | 2 +- drivers/iio/accel/adxl367_spi.c | 4 ++-- drivers/iio/accel/adxl372_i2c.c | 2 +- drivers/iio/accel/adxl372_spi.c | 2 +- drivers/iio/accel/bma220_spi.c | 4 ++-- drivers/iio/accel/bmc150-accel-i2c.c | 6 +++--- drivers/iio/accel/bmc150-accel-spi.c | 4 ++-- drivers/iio/accel/bmi088-accel-i2c.c | 4 ++-- drivers/iio/accel/bmi088-accel-spi.c | 4 ++-- drivers/iio/accel/da280.c | 4 ++-- drivers/iio/accel/da311.c | 2 +- drivers/iio/accel/dmard10.c | 2 +- drivers/iio/accel/fxls8962af-i2c.c | 4 ++-- drivers/iio/accel/fxls8962af-spi.c | 4 ++-- drivers/iio/accel/hid-sensor-accel-3d.c | 2 +- drivers/iio/accel/kxsd9-i2c.c | 2 +- drivers/iio/accel/kxsd9-spi.c | 2 +- drivers/iio/accel/kxsd9.c | 2 +- drivers/iio/accel/mma7660.c | 4 ++-- drivers/iio/accel/mma9551.c | 4 ++-- drivers/iio/accel/mma9553.c | 6 +++--- drivers/iio/accel/mxc4005.c | 4 ++-- drivers/iio/accel/sca3000.c | 2 +- drivers/iio/accel/sca3300.c | 4 ++-- drivers/iio/accel/st_accel_i2c.c | 6 +++--- drivers/iio/accel/st_accel_spi.c | 4 ++-- drivers/iio/accel/stk8312.c | 2 +- drivers/iio/accel/stk8ba50.c | 4 ++-- drivers/iio/adc/ad7280a.c | 2 +- drivers/iio/adc/ad7768-1.c | 2 +- drivers/iio/adc/ad7791.c | 2 +- drivers/iio/adc/ad799x.c | 2 +- drivers/iio/adc/adi-axi-adc.c | 2 +- drivers/iio/adc/axp20x_adc.c | 8 ++++---- drivers/iio/adc/axp288_adc.c | 4 ++-- drivers/iio/adc/cpcap-adc.c | 2 +- drivers/iio/adc/da9150-gpadc.c | 2 +- drivers/iio/adc/envelope-detector.c | 4 ++-- drivers/iio/adc/fsl-imx25-gcq.c | 2 +- drivers/iio/adc/hi8435.c | 2 +- drivers/iio/adc/imx7d_adc.c | 2 +- drivers/iio/adc/imx8qxp-adc.c | 2 +- drivers/iio/adc/imx93_adc.c | 2 +- drivers/iio/adc/intel_mrfld_adc.c | 4 ++-- drivers/iio/adc/lpc18xx_adc.c | 2 +- drivers/iio/adc/ltc2471.c | 2 +- drivers/iio/adc/max1363.c | 4 ++-- drivers/iio/adc/max77541-adc.c | 2 +- drivers/iio/adc/meson_saradc.c | 2 +- drivers/iio/adc/mt6359-auxadc.c | 2 +- drivers/iio/adc/mt6370-adc.c | 2 +- drivers/iio/adc/npcm_adc.c | 2 +- drivers/iio/adc/pac1921.c | 4 ++-- drivers/iio/adc/palmas_gpadc.c | 2 +- drivers/iio/adc/rcar-gyroadc.c | 2 +- drivers/iio/adc/rn5t618-adc.c | 2 +- drivers/iio/adc/rzg2l_adc.c | 2 +- drivers/iio/adc/spear_adc.c | 2 +- drivers/iio/adc/stm32-adc.c | 4 ++-- drivers/iio/adc/stm32-dfsdm-adc.c | 8 ++++---- drivers/iio/adc/sun20i-gpadc-iio.c | 2 +- drivers/iio/adc/sun4i-gpadc-iio.c | 6 +++--- drivers/iio/adc/ti-lmp92064.c | 2 +- drivers/iio/adc/twl6030-gpadc.c | 2 +- drivers/iio/adc/vf610_adc.c | 4 ++-- drivers/iio/adc/xilinx-xadc-core.c | 2 +- drivers/iio/addac/ad74413r.c | 4 ++-- drivers/iio/afe/iio-rescale.c | 2 +- drivers/iio/amplifiers/ad8366.c | 2 +- drivers/iio/amplifiers/ada4250.c | 4 ++-- drivers/iio/amplifiers/hmc425a.c | 4 ++-- drivers/iio/cdc/ad7150.c | 4 ++-- drivers/iio/cdc/ad7746.c | 4 ++-- drivers/iio/chemical/ags02ma.c | 4 ++-- drivers/iio/chemical/atlas-ezo-sensor.c | 4 ++-- drivers/iio/chemical/atlas-sensor.c | 2 +- drivers/iio/chemical/bme680_i2c.c | 4 ++-- drivers/iio/chemical/bme680_spi.c | 4 ++-- drivers/iio/chemical/sunrise_co2.c | 4 ++-- drivers/iio/common/cros_ec_sensors/cros_ec_lid_angle.c | 2 +- drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c | 2 +- drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c | 2 +- drivers/iio/common/scmi_sensors/scmi_iio.c | 4 ++-- drivers/iio/common/ssp_sensors/ssp_dev.c | 2 +- drivers/iio/dac/ad5064.c | 8 ++++---- drivers/iio/dac/ad5360.c | 2 +- drivers/iio/dac/ad5380.c | 2 +- drivers/iio/dac/ad5446.c | 6 +++--- drivers/iio/dac/ad5449.c | 2 +- drivers/iio/dac/ad5504.c | 4 ++-- drivers/iio/dac/ad5592r-base.c | 2 +- drivers/iio/dac/ad5592r.c | 6 +++--- drivers/iio/dac/ad5593r.c | 6 +++--- drivers/iio/dac/ad5624r_spi.c | 4 ++-- drivers/iio/dac/ad5686-spi.c | 2 +- drivers/iio/dac/ad5686.c | 2 +- drivers/iio/dac/ad5696-i2c.c | 4 ++-- drivers/iio/dac/ad5755.c | 4 ++-- drivers/iio/dac/ad5758.c | 2 +- drivers/iio/dac/ad5761.c | 2 +- drivers/iio/dac/ad5766.c | 6 +++--- drivers/iio/dac/ad5770r.c | 4 ++-- drivers/iio/dac/ad5791.c | 2 +- drivers/iio/dac/ad7293.c | 4 ++-- drivers/iio/dac/ad7303.c | 6 +++--- drivers/iio/dac/ad8801.c | 2 +- drivers/iio/dac/ad9739a.c | 4 ++-- drivers/iio/dac/adi-axi-dac.c | 4 ++-- drivers/iio/dac/dpot-dac.c | 2 +- drivers/iio/dac/ds4424.c | 2 +- drivers/iio/dac/lpc18xx_dac.c | 2 +- drivers/iio/dac/ltc1660.c | 4 ++-- drivers/iio/dac/ltc2632.c | 6 +++--- drivers/iio/dac/ltc2688.c | 12 ++++++------ drivers/iio/dac/max5522.c | 4 ++-- drivers/iio/dac/max5821.c | 2 +- drivers/iio/dac/mcp4725.c | 4 ++-- drivers/iio/dac/mcp4728.c | 6 +++--- drivers/iio/dac/mcp4821.c | 4 ++-- drivers/iio/dac/mcp4922.c | 2 +- drivers/iio/dac/stm32-dac-core.c | 2 +- drivers/iio/dac/stm32-dac.c | 4 ++-- drivers/iio/dac/ti-dac082s085.c | 2 +- drivers/iio/dac/ti-dac5571.c | 6 +++--- drivers/iio/dac/ti-dac7311.c | 2 +- drivers/iio/dac/ti-dac7612.c | 4 ++-- drivers/iio/dac/vf610_dac.c | 4 ++-- drivers/iio/filter/admv8818.c | 6 +++--- drivers/iio/frequency/ad9523.c | 2 +- drivers/iio/frequency/adf4350.c | 6 +++--- drivers/iio/frequency/adf4371.c | 6 +++--- drivers/iio/frequency/adf4377.c | 4 ++-- drivers/iio/frequency/admv1013.c | 6 +++--- drivers/iio/frequency/admv1014.c | 4 ++-- drivers/iio/frequency/adrf6780.c | 4 ++-- drivers/iio/gyro/adis16080.c | 2 +- drivers/iio/gyro/adis16260.c | 2 +- drivers/iio/gyro/adxrs450.c | 2 +- drivers/iio/gyro/bmg160_i2c.c | 4 ++-- drivers/iio/gyro/bmg160_spi.c | 2 +- drivers/iio/gyro/hid-sensor-gyro-3d.c | 2 +- drivers/iio/gyro/mpu3050-core.c | 2 +- drivers/iio/gyro/mpu3050-i2c.c | 4 ++-- drivers/iio/gyro/st_gyro_i2c.c | 4 ++-- drivers/iio/gyro/st_gyro_spi.c | 4 ++-- drivers/iio/health/afe4403.c | 4 ++-- drivers/iio/health/afe4404.c | 4 ++-- drivers/iio/health/max30100.c | 2 +- drivers/iio/health/max30102.c | 2 +- drivers/iio/humidity/am2315.c | 2 +- drivers/iio/humidity/hid-sensor-humidity.c | 2 +- drivers/iio/humidity/hts221_i2c.c | 6 +++--- drivers/iio/humidity/hts221_spi.c | 4 ++-- drivers/iio/humidity/htu21.c | 4 ++-- drivers/iio/imu/adis16400.c | 2 +- drivers/iio/imu/adis16460.c | 4 ++-- drivers/iio/imu/adis16475.c | 2 +- drivers/iio/imu/adis16480.c | 2 +- drivers/iio/imu/bmi160/bmi160_i2c.c | 6 +++--- drivers/iio/imu/bmi160/bmi160_spi.c | 6 +++--- drivers/iio/imu/inv_icm42600/inv_icm42600_accel.c | 2 +- drivers/iio/imu/inv_icm42600/inv_icm42600_gyro.c | 2 +- drivers/iio/imu/inv_icm42600/inv_icm42600_i2c.c | 2 +- drivers/iio/imu/inv_icm42600/inv_icm42600_spi.c | 2 +- drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c | 2 +- drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c | 4 ++-- drivers/iio/imu/inv_mpu6050/inv_mpu_spi.c | 4 ++-- drivers/iio/imu/kmx61.c | 2 +- drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i2c.c | 6 +++--- drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c | 2 +- drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_spi.c | 4 ++-- drivers/iio/imu/st_lsm9ds0/st_lsm9ds0_i2c.c | 6 +++--- drivers/iio/imu/st_lsm9ds0/st_lsm9ds0_spi.c | 4 ++-- drivers/iio/light/acpi-als.c | 2 +- drivers/iio/light/adux1020.c | 2 +- drivers/iio/light/al3000a.c | 2 +- drivers/iio/light/al3010.c | 4 ++-- drivers/iio/light/al3320a.c | 6 +++--- drivers/iio/light/apds9960.c | 2 +- drivers/iio/light/bh1780.c | 2 +- drivers/iio/light/cm3232.c | 4 ++-- drivers/iio/light/cm3323.c | 4 ++-- drivers/iio/light/cm3605.c | 2 +- drivers/iio/light/cros_ec_light_prox.c | 2 +- drivers/iio/light/gp2ap002.c | 2 +- drivers/iio/light/hid-sensor-als.c | 2 +- drivers/iio/light/hid-sensor-prox.c | 2 +- drivers/iio/light/isl29018.c | 4 ++-- drivers/iio/light/isl29028.c | 4 ++-- drivers/iio/light/jsa1212.c | 2 +- drivers/iio/light/ltr390.c | 4 ++-- drivers/iio/light/ltr501.c | 6 +++--- drivers/iio/light/ltrf216a.c | 4 ++-- drivers/iio/light/opt4001.c | 2 +- drivers/iio/light/pa12203001.c | 4 ++-- drivers/iio/light/st_uvis25_i2c.c | 4 ++-- drivers/iio/light/st_uvis25_spi.c | 4 ++-- drivers/iio/light/stk3310.c | 8 ++++---- drivers/iio/light/tsl2563.c | 4 ++-- drivers/iio/light/tsl2583.c | 4 ++-- drivers/iio/light/tsl2591.c | 2 +- drivers/iio/light/tsl2772.c | 4 ++-- drivers/iio/light/us5182d.c | 6 +++--- drivers/iio/light/vcnl4000.c | 4 ++-- drivers/iio/light/veml6040.c | 4 ++-- drivers/iio/light/veml6075.c | 2 +- drivers/iio/light/vl6180.c | 2 +- drivers/iio/magnetometer/ak8974.c | 6 +++--- drivers/iio/magnetometer/ak8975.c | 4 ++-- drivers/iio/magnetometer/als31300.c | 4 ++-- drivers/iio/magnetometer/bmc150_magn_i2c.c | 2 +- drivers/iio/magnetometer/bmc150_magn_spi.c | 2 +- drivers/iio/magnetometer/hid-sensor-magn-3d.c | 2 +- drivers/iio/magnetometer/hmc5843_i2c.c | 2 +- drivers/iio/magnetometer/mmc35240.c | 4 ++-- drivers/iio/magnetometer/st_magn_i2c.c | 4 ++-- drivers/iio/magnetometer/st_magn_spi.c | 4 ++-- drivers/iio/magnetometer/tmag5273.c | 4 ++-- drivers/iio/magnetometer/yamaha-yas530.c | 4 ++-- drivers/iio/multiplexer/iio-mux.c | 2 +- drivers/iio/orientation/hid-sensor-incl-3d.c | 2 +- drivers/iio/orientation/hid-sensor-rotation.c | 2 +- drivers/iio/position/hid-sensor-custom-intel-hinge.c | 2 +- drivers/iio/potentiometer/ad5272.c | 4 ++-- drivers/iio/potentiometer/ds1803.c | 4 ++-- drivers/iio/potentiometer/max5432.c | 2 +- drivers/iio/potentiometer/max5487.c | 2 +- drivers/iio/potentiometer/mcp4018.c | 4 ++-- drivers/iio/potentiometer/mcp41010.c | 4 ++-- drivers/iio/potentiometer/mcp4131.c | 4 ++-- drivers/iio/potentiometer/mcp4531.c | 4 ++-- drivers/iio/potentiometer/tpl0102.c | 2 +- drivers/iio/potentiostat/lmp91000.c | 4 ++-- drivers/iio/pressure/abp060mg.c | 2 +- drivers/iio/pressure/bmp280-i2c.c | 4 ++-- drivers/iio/pressure/bmp280-spi.c | 2 +- drivers/iio/pressure/cros_ec_baro.c | 2 +- drivers/iio/pressure/dlhl60d.c | 4 ++-- drivers/iio/pressure/dps310.c | 4 ++-- drivers/iio/pressure/hid-sensor-press.c | 2 +- drivers/iio/pressure/hp03.c | 2 +- drivers/iio/pressure/hp206c.c | 4 ++-- drivers/iio/pressure/hsc030pa_i2c.c | 4 ++-- drivers/iio/pressure/hsc030pa_spi.c | 4 ++-- drivers/iio/pressure/mpl115_spi.c | 2 +- drivers/iio/pressure/mprls0025pa_i2c.c | 4 ++-- drivers/iio/pressure/mprls0025pa_spi.c | 4 ++-- drivers/iio/pressure/ms5637.c | 4 ++-- drivers/iio/pressure/rohm-bm1390.c | 4 ++-- drivers/iio/pressure/st_pressure_i2c.c | 6 +++--- drivers/iio/pressure/st_pressure_spi.c | 4 ++-- drivers/iio/pressure/zpa2326_spi.c | 2 +- drivers/iio/proximity/as3935.c | 4 ++-- drivers/iio/proximity/cros_ec_mkbp_proximity.c | 2 +- drivers/iio/proximity/hx9023s.c | 4 ++-- drivers/iio/proximity/irsd200.c | 2 +- drivers/iio/proximity/isl29501.c | 4 ++-- drivers/iio/proximity/mb1232.c | 2 +- drivers/iio/proximity/ping.c | 2 +- drivers/iio/proximity/srf04.c | 2 +- drivers/iio/proximity/srf08.c | 2 +- drivers/iio/proximity/sx9310.c | 6 +++--- drivers/iio/proximity/sx9324.c | 2 +- drivers/iio/proximity/sx9500.c | 4 ++-- drivers/iio/proximity/vcnl3020.c | 2 +- drivers/iio/resolver/ad2s1200.c | 2 +- drivers/iio/resolver/ad2s1210.c | 2 +- drivers/iio/resolver/ad2s90.c | 4 ++-- drivers/iio/temperature/hid-sensor-temperature.c | 2 +- drivers/iio/temperature/ltc2983.c | 4 ++-- drivers/iio/temperature/maxim_thermocouple.c | 2 +- drivers/iio/temperature/mcp9600.c | 4 ++-- drivers/iio/temperature/tmp007.c | 2 +- drivers/iio/temperature/tsys01.c | 4 ++-- drivers/iio/temperature/tsys02d.c | 2 +- drivers/iio/test/iio-test-format.c | 2 +- drivers/iio/test/iio-test-gts.c | 2 +- drivers/iio/test/iio-test-rescale.c | 2 +- drivers/iio/trigger/stm32-lptimer-trigger.c | 2 +- drivers/iio/trigger/stm32-timer-trigger.c | 4 ++-- drivers/staging/iio/accel/adis16203.c | 2 +- drivers/staging/iio/adc/ad7816.c | 2 +- drivers/staging/iio/addac/adt7316-i2c.c | 2 +- drivers/staging/iio/frequency/ad9832.c | 2 +- drivers/staging/iio/frequency/ad9834.c | 4 ++-- drivers/staging/iio/impedance-analyzer/ad5933.c | 4 ++-- tools/iio/iio_generic_buffer.c | 2 +- 287 files changed, 472 insertions(+), 472 deletions(-) diff --git a/drivers/iio/accel/adxl367_i2c.c b/drivers/iio/accel/adxl367_i2c.c index 80f0b642b9b0..1c7d2eb054a2 100644 --- a/drivers/iio/accel/adxl367_i2c.c +++ b/drivers/iio/accel/adxl367_i2c.c @@ -68,7 +68,7 @@ MODULE_DEVICE_TABLE(i2c, adxl367_i2c_id); static const struct of_device_id adxl367_of_match[] = { { .compatible = "adi,adxl367" }, - { }, + { } }; MODULE_DEVICE_TABLE(of, adxl367_of_match); diff --git a/drivers/iio/accel/adxl367_spi.c b/drivers/iio/accel/adxl367_spi.c index 49d7c8fbe8ed..3fed56bb9054 100644 --- a/drivers/iio/accel/adxl367_spi.c +++ b/drivers/iio/accel/adxl367_spi.c @@ -139,13 +139,13 @@ static int adxl367_spi_probe(struct spi_device *spi) static const struct spi_device_id adxl367_spi_id[] = { { "adxl367", 0 }, - { }, + { } }; MODULE_DEVICE_TABLE(spi, adxl367_spi_id); static const struct of_device_id adxl367_of_match[] = { { .compatible = "adi,adxl367" }, - { }, + { } }; MODULE_DEVICE_TABLE(of, adxl367_of_match); diff --git a/drivers/iio/accel/adxl372_i2c.c b/drivers/iio/accel/adxl372_i2c.c index 43d5fd921be7..186d4fe9a556 100644 --- a/drivers/iio/accel/adxl372_i2c.c +++ b/drivers/iio/accel/adxl372_i2c.c @@ -43,7 +43,7 @@ static int adxl372_i2c_probe(struct i2c_client *client) static const struct i2c_device_id adxl372_i2c_id[] = { { "adxl372" }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, adxl372_i2c_id); diff --git a/drivers/iio/accel/adxl372_spi.c b/drivers/iio/accel/adxl372_spi.c index 1ab1997a55b1..39941b519c3b 100644 --- a/drivers/iio/accel/adxl372_spi.c +++ b/drivers/iio/accel/adxl372_spi.c @@ -34,7 +34,7 @@ static int adxl372_spi_probe(struct spi_device *spi) static const struct spi_device_id adxl372_spi_id[] = { { "adxl372", 0 }, - {} + { } }; MODULE_DEVICE_TABLE(spi, adxl372_spi_id); diff --git a/drivers/iio/accel/bma220_spi.c b/drivers/iio/accel/bma220_spi.c index 96ba028157ee..978108fb74e9 100644 --- a/drivers/iio/accel/bma220_spi.c +++ b/drivers/iio/accel/bma220_spi.c @@ -307,12 +307,12 @@ static DEFINE_SIMPLE_DEV_PM_OPS(bma220_pm_ops, bma220_suspend, bma220_resume); static const struct spi_device_id bma220_spi_id[] = { {"bma220", 0}, - {} + { } }; static const struct acpi_device_id bma220_acpi_id[] = { {"BMA0220", 0}, - {} + { } }; MODULE_DEVICE_TABLE(spi, bma220_spi_id); diff --git a/drivers/iio/accel/bmc150-accel-i2c.c b/drivers/iio/accel/bmc150-accel-i2c.c index 0d4ce6c38931..b4604f441553 100644 --- a/drivers/iio/accel/bmc150-accel-i2c.c +++ b/drivers/iio/accel/bmc150-accel-i2c.c @@ -240,7 +240,7 @@ static const struct acpi_device_id bmc150_accel_acpi_match[] = { {"BOSC0200"}, {"BSBA0150"}, {"DUAL250E"}, - { }, + { } }; MODULE_DEVICE_TABLE(acpi, bmc150_accel_acpi_match); @@ -255,7 +255,7 @@ static const struct i2c_device_id bmc150_accel_id[] = { {"bmc150_accel"}, {"bmc156_accel", BOSCH_BMC156}, {"bmi055_accel"}, - {} + { } }; MODULE_DEVICE_TABLE(i2c, bmc150_accel_id); @@ -271,7 +271,7 @@ static const struct of_device_id bmc150_accel_of_match[] = { { .compatible = "bosch,bmc150_accel" }, { .compatible = "bosch,bmc156_accel" }, { .compatible = "bosch,bmi055_accel" }, - { }, + { } }; MODULE_DEVICE_TABLE(of, bmc150_accel_of_match); diff --git a/drivers/iio/accel/bmc150-accel-spi.c b/drivers/iio/accel/bmc150-accel-spi.c index 70b3642656ab..26ce50b37716 100644 --- a/drivers/iio/accel/bmc150-accel-spi.c +++ b/drivers/iio/accel/bmc150-accel-spi.c @@ -48,7 +48,7 @@ static const struct acpi_device_id bmc150_accel_acpi_match[] = { {"BMC150A"}, {"BMI055A"}, {"BSBA0150"}, - { }, + { } }; MODULE_DEVICE_TABLE(acpi, bmc150_accel_acpi_match); @@ -62,7 +62,7 @@ static const struct spi_device_id bmc150_accel_id[] = { {"bmc150_accel"}, {"bmc156_accel", BOSCH_BMC156}, {"bmi055_accel"}, - {} + { } }; MODULE_DEVICE_TABLE(spi, bmc150_accel_id); diff --git a/drivers/iio/accel/bmi088-accel-i2c.c b/drivers/iio/accel/bmi088-accel-i2c.c index bd22bd0d3c25..310f863029bb 100644 --- a/drivers/iio/accel/bmi088-accel-i2c.c +++ b/drivers/iio/accel/bmi088-accel-i2c.c @@ -40,7 +40,7 @@ static const struct of_device_id bmi088_of_match[] = { { .compatible = "bosch,bmi085-accel" }, { .compatible = "bosch,bmi088-accel" }, { .compatible = "bosch,bmi090l-accel" }, - {} + { } }; MODULE_DEVICE_TABLE(of, bmi088_of_match); @@ -48,7 +48,7 @@ static const struct i2c_device_id bmi088_accel_id[] = { { "bmi085-accel", BOSCH_BMI085 }, { "bmi088-accel", BOSCH_BMI088 }, { "bmi090l-accel", BOSCH_BMI090L }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, bmi088_accel_id); diff --git a/drivers/iio/accel/bmi088-accel-spi.c b/drivers/iio/accel/bmi088-accel-spi.c index c9d51a74c07f..44cb50c76cb1 100644 --- a/drivers/iio/accel/bmi088-accel-spi.c +++ b/drivers/iio/accel/bmi088-accel-spi.c @@ -67,7 +67,7 @@ static const struct of_device_id bmi088_of_match[] = { { .compatible = "bosch,bmi085-accel" }, { .compatible = "bosch,bmi088-accel" }, { .compatible = "bosch,bmi090l-accel" }, - {} + { } }; MODULE_DEVICE_TABLE(of, bmi088_of_match); @@ -75,7 +75,7 @@ static const struct spi_device_id bmi088_accel_id[] = { {"bmi085-accel", BOSCH_BMI085}, {"bmi088-accel", BOSCH_BMI088}, {"bmi090l-accel", BOSCH_BMI090L}, - {} + { } }; MODULE_DEVICE_TABLE(spi, bmi088_accel_id); diff --git a/drivers/iio/accel/da280.c b/drivers/iio/accel/da280.c index 992286828844..c2dd123b9021 100644 --- a/drivers/iio/accel/da280.c +++ b/drivers/iio/accel/da280.c @@ -157,7 +157,7 @@ static const struct da280_match_data da280_match_data = { "da280", 3 }; static const struct acpi_device_id da280_acpi_match[] = { { "NSA2513", (kernel_ulong_t)&da217_match_data }, { "MIRAACC", (kernel_ulong_t)&da280_match_data }, - {} + { } }; MODULE_DEVICE_TABLE(acpi, da280_acpi_match); @@ -165,7 +165,7 @@ static const struct i2c_device_id da280_i2c_id[] = { { "da217", (kernel_ulong_t)&da217_match_data }, { "da226", (kernel_ulong_t)&da226_match_data }, { "da280", (kernel_ulong_t)&da280_match_data }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, da280_i2c_id); diff --git a/drivers/iio/accel/da311.c b/drivers/iio/accel/da311.c index 94f827acdd1c..e1df7b009d89 100644 --- a/drivers/iio/accel/da311.c +++ b/drivers/iio/accel/da311.c @@ -269,7 +269,7 @@ static DEFINE_SIMPLE_DEV_PM_OPS(da311_pm_ops, da311_suspend, da311_resume); static const struct i2c_device_id da311_i2c_id[] = { { "da311" }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, da311_i2c_id); diff --git a/drivers/iio/accel/dmard10.c b/drivers/iio/accel/dmard10.c index 35c0eefb741e..71cd1928baa6 100644 --- a/drivers/iio/accel/dmard10.c +++ b/drivers/iio/accel/dmard10.c @@ -232,7 +232,7 @@ static DEFINE_SIMPLE_DEV_PM_OPS(dmard10_pm_ops, dmard10_suspend, static const struct i2c_device_id dmard10_i2c_id[] = { { "dmard10" }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, dmard10_i2c_id); diff --git a/drivers/iio/accel/fxls8962af-i2c.c b/drivers/iio/accel/fxls8962af-i2c.c index 1b9156b6b2e3..106198a12474 100644 --- a/drivers/iio/accel/fxls8962af-i2c.c +++ b/drivers/iio/accel/fxls8962af-i2c.c @@ -32,14 +32,14 @@ static const struct i2c_device_id fxls8962af_id[] = { { "fxls8964af", fxls8964af }, { "fxls8967af", fxls8967af }, { "fxls8974cf", fxls8974cf }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, fxls8962af_id); static const struct of_device_id fxls8962af_of_match[] = { { .compatible = "nxp,fxls8962af" }, { .compatible = "nxp,fxls8964af" }, - {} + { } }; MODULE_DEVICE_TABLE(of, fxls8962af_of_match); diff --git a/drivers/iio/accel/fxls8962af-spi.c b/drivers/iio/accel/fxls8962af-spi.c index 46fc6e002714..bdafd1f615d9 100644 --- a/drivers/iio/accel/fxls8962af-spi.c +++ b/drivers/iio/accel/fxls8962af-spi.c @@ -30,14 +30,14 @@ static int fxls8962af_probe(struct spi_device *spi) static const struct of_device_id fxls8962af_spi_of_match[] = { { .compatible = "nxp,fxls8962af" }, { .compatible = "nxp,fxls8964af" }, - {} + { } }; MODULE_DEVICE_TABLE(of, fxls8962af_spi_of_match); static const struct spi_device_id fxls8962af_spi_id_table[] = { { "fxls8962af", fxls8962af }, { "fxls8964af", fxls8964af }, - {} + { } }; MODULE_DEVICE_TABLE(spi, fxls8962af_spi_id_table); diff --git a/drivers/iio/accel/hid-sensor-accel-3d.c b/drivers/iio/accel/hid-sensor-accel-3d.c index 078fab2abb68..3214506d133d 100644 --- a/drivers/iio/accel/hid-sensor-accel-3d.c +++ b/drivers/iio/accel/hid-sensor-accel-3d.c @@ -440,7 +440,7 @@ static const struct platform_device_id hid_accel_3d_ids[] = { { /* gravity sensor */ .name = "HID-SENSOR-20007b", }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(platform, hid_accel_3d_ids); diff --git a/drivers/iio/accel/kxsd9-i2c.c b/drivers/iio/accel/kxsd9-i2c.c index 3857d2edf250..1fa88b99149e 100644 --- a/drivers/iio/accel/kxsd9-i2c.c +++ b/drivers/iio/accel/kxsd9-i2c.c @@ -38,7 +38,7 @@ static void kxsd9_i2c_remove(struct i2c_client *client) static const struct of_device_id kxsd9_of_match[] = { { .compatible = "kionix,kxsd9", }, - { }, + { } }; MODULE_DEVICE_TABLE(of, kxsd9_of_match); diff --git a/drivers/iio/accel/kxsd9-spi.c b/drivers/iio/accel/kxsd9-spi.c index a05f4467d94a..cbb6c6412665 100644 --- a/drivers/iio/accel/kxsd9-spi.c +++ b/drivers/iio/accel/kxsd9-spi.c @@ -38,7 +38,7 @@ static void kxsd9_spi_remove(struct spi_device *spi) static const struct spi_device_id kxsd9_spi_id[] = { {"kxsd9", 0}, - { }, + { } }; MODULE_DEVICE_TABLE(spi, kxsd9_spi_id); diff --git a/drivers/iio/accel/kxsd9.c b/drivers/iio/accel/kxsd9.c index 0ededf8cfdca..fb14b875e20d 100644 --- a/drivers/iio/accel/kxsd9.c +++ b/drivers/iio/accel/kxsd9.c @@ -273,7 +273,7 @@ kxsd9_get_mount_matrix(const struct iio_dev *indio_dev, static const struct iio_chan_spec_ext_info kxsd9_ext_info[] = { IIO_MOUNT_MATRIX(IIO_SHARED_BY_TYPE, kxsd9_get_mount_matrix), - { }, + { } }; #define KXSD9_ACCEL_CHAN(axis, index) \ diff --git a/drivers/iio/accel/mma7660.c b/drivers/iio/accel/mma7660.c index 2894aff80161..d0a16f227903 100644 --- a/drivers/iio/accel/mma7660.c +++ b/drivers/iio/accel/mma7660.c @@ -262,7 +262,7 @@ static DEFINE_SIMPLE_DEV_PM_OPS(mma7660_pm_ops, mma7660_suspend, static const struct i2c_device_id mma7660_i2c_id[] = { { "mma7660" }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, mma7660_i2c_id); @@ -274,7 +274,7 @@ MODULE_DEVICE_TABLE(of, mma7660_of_match); static const struct acpi_device_id mma7660_acpi_id[] = { {"MMA7660", 0}, - {} + { } }; MODULE_DEVICE_TABLE(acpi, mma7660_acpi_id); diff --git a/drivers/iio/accel/mma9551.c b/drivers/iio/accel/mma9551.c index 1b96687da01a..b89bad9e6fe6 100644 --- a/drivers/iio/accel/mma9551.c +++ b/drivers/iio/accel/mma9551.c @@ -578,14 +578,14 @@ static const struct dev_pm_ops mma9551_pm_ops = { static const struct acpi_device_id mma9551_acpi_match[] = { {"MMA9551", 0}, - {}, + { } }; MODULE_DEVICE_TABLE(acpi, mma9551_acpi_match); static const struct i2c_device_id mma9551_id[] = { { "mma9551" }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, mma9551_id); diff --git a/drivers/iio/accel/mma9553.c b/drivers/iio/accel/mma9553.c index 00e224efc8ed..1bbe660b254f 100644 --- a/drivers/iio/accel/mma9553.c +++ b/drivers/iio/accel/mma9553.c @@ -919,7 +919,7 @@ static const struct iio_enum mma9553_calibgender_enum = { static const struct iio_chan_spec_ext_info mma9553_ext_info[] = { IIO_ENUM("calibgender", IIO_SHARED_BY_TYPE, &mma9553_calibgender_enum), IIO_ENUM_AVAILABLE("calibgender", IIO_SHARED_BY_TYPE, &mma9553_calibgender_enum), - {}, + { } }; #define MMA9553_PEDOMETER_CHANNEL(_type, _mask) { \ @@ -1216,14 +1216,14 @@ static const struct dev_pm_ops mma9553_pm_ops = { static const struct acpi_device_id mma9553_acpi_match[] = { {"MMA9553", 0}, - {}, + { } }; MODULE_DEVICE_TABLE(acpi, mma9553_acpi_match); static const struct i2c_device_id mma9553_id[] = { { "mma9553" }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, mma9553_id); diff --git a/drivers/iio/accel/mxc4005.c b/drivers/iio/accel/mxc4005.c index cb5c4e354fc0..c9c4bab08a81 100644 --- a/drivers/iio/accel/mxc4005.c +++ b/drivers/iio/accel/mxc4005.c @@ -573,14 +573,14 @@ static const struct acpi_device_id mxc4005_acpi_match[] = { {"MXC4005", 0}, {"MXC6655", 0}, {"MDA6655", 0}, - { }, + { } }; MODULE_DEVICE_TABLE(acpi, mxc4005_acpi_match); static const struct of_device_id mxc4005_of_match[] = { { .compatible = "memsic,mxc4005", }, { .compatible = "memsic,mxc6655", }, - { }, + { } }; MODULE_DEVICE_TABLE(of, mxc4005_of_match); diff --git a/drivers/iio/accel/sca3000.c b/drivers/iio/accel/sca3000.c index 3fb0f386c3db..aabe4491efd7 100644 --- a/drivers/iio/accel/sca3000.c +++ b/drivers/iio/accel/sca3000.c @@ -1541,7 +1541,7 @@ static const struct spi_device_id sca3000_id[] = { {"sca3000_e02", e02}, {"sca3000_e04", e04}, {"sca3000_e05", e05}, - {} + { } }; MODULE_DEVICE_TABLE(spi, sca3000_id); diff --git a/drivers/iio/accel/sca3300.c b/drivers/iio/accel/sca3300.c index ca0ce83e42b2..9b00a3d7056d 100644 --- a/drivers/iio/accel/sca3300.c +++ b/drivers/iio/accel/sca3300.c @@ -674,14 +674,14 @@ static int sca3300_probe(struct spi_device *spi) static const struct of_device_id sca3300_dt_ids[] = { { .compatible = "murata,sca3300"}, { .compatible = "murata,scl3300"}, - {} + { } }; MODULE_DEVICE_TABLE(of, sca3300_dt_ids); static const struct spi_device_id sca3300_ids[] = { { "sca3300" }, { "scl3300" }, - {} + { } }; MODULE_DEVICE_TABLE(spi, sca3300_ids); diff --git a/drivers/iio/accel/st_accel_i2c.c b/drivers/iio/accel/st_accel_i2c.c index ab4fdba75a0a..f24449500533 100644 --- a/drivers/iio/accel/st_accel_i2c.c +++ b/drivers/iio/accel/st_accel_i2c.c @@ -126,14 +126,14 @@ static const struct of_device_id st_accel_of_match[] = { .compatible = "st,iis328dq", .data = IIS328DQ_ACCEL_DEV_NAME, }, - {}, + { } }; MODULE_DEVICE_TABLE(of, st_accel_of_match); static const struct acpi_device_id st_accel_acpi_match[] = { {"SMO8840", (kernel_ulong_t)LIS2DH12_ACCEL_DEV_NAME}, {"SMO8A90", (kernel_ulong_t)LNG2DM_ACCEL_DEV_NAME}, - { }, + { } }; MODULE_DEVICE_TABLE(acpi, st_accel_acpi_match); @@ -164,7 +164,7 @@ static const struct i2c_device_id st_accel_id_table[] = { { LSM303C_ACCEL_DEV_NAME }, { SC7A20_ACCEL_DEV_NAME }, { IIS328DQ_ACCEL_DEV_NAME }, - {}, + { } }; MODULE_DEVICE_TABLE(i2c, st_accel_id_table); diff --git a/drivers/iio/accel/st_accel_spi.c b/drivers/iio/accel/st_accel_spi.c index 6146754fe47f..d8ec0555f42a 100644 --- a/drivers/iio/accel/st_accel_spi.c +++ b/drivers/iio/accel/st_accel_spi.c @@ -108,7 +108,7 @@ static const struct of_device_id st_accel_of_match[] = { .compatible = "st,iis328dq", .data = IIS328DQ_ACCEL_DEV_NAME, }, - {} + { } }; MODULE_DEVICE_TABLE(of, st_accel_of_match); @@ -167,7 +167,7 @@ static const struct spi_device_id st_accel_id_table[] = { { LIS302DL_ACCEL_DEV_NAME }, { LSM303C_ACCEL_DEV_NAME }, { IIS328DQ_ACCEL_DEV_NAME }, - {}, + { } }; MODULE_DEVICE_TABLE(spi, st_accel_id_table); diff --git a/drivers/iio/accel/stk8312.c b/drivers/iio/accel/stk8312.c index 471c154c3631..d3ff1287c017 100644 --- a/drivers/iio/accel/stk8312.c +++ b/drivers/iio/accel/stk8312.c @@ -635,7 +635,7 @@ static const struct i2c_device_id stk8312_i2c_id[] = { /* Deprecated in favour of lowercase form */ { "STK8312" }, { "stk8312" }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, stk8312_i2c_id); diff --git a/drivers/iio/accel/stk8ba50.c b/drivers/iio/accel/stk8ba50.c index cab592a68622..e5fed3eac2c8 100644 --- a/drivers/iio/accel/stk8ba50.c +++ b/drivers/iio/accel/stk8ba50.c @@ -526,13 +526,13 @@ static DEFINE_SIMPLE_DEV_PM_OPS(stk8ba50_pm_ops, stk8ba50_suspend, static const struct i2c_device_id stk8ba50_i2c_id[] = { { "stk8ba50" }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, stk8ba50_i2c_id); static const struct acpi_device_id stk8ba50_acpi_id[] = { {"STK8BA50", 0}, - {} + { } }; MODULE_DEVICE_TABLE(acpi, stk8ba50_acpi_id); diff --git a/drivers/iio/adc/ad7280a.c b/drivers/iio/adc/ad7280a.c index f9f32737db80..dda2986ccda0 100644 --- a/drivers/iio/adc/ad7280a.c +++ b/drivers/iio/adc/ad7280a.c @@ -572,7 +572,7 @@ static const struct iio_chan_spec_ext_info ad7280_cell_ext_info[] = { .write = ad7280_store_balance_timer, .shared = IIO_SEPARATE, }, - {} + { } }; static const struct iio_event_spec ad7280_events[] = { diff --git a/drivers/iio/adc/ad7768-1.c b/drivers/iio/adc/ad7768-1.c index 66087fabe181..09e4ab76e2b6 100644 --- a/drivers/iio/adc/ad7768-1.c +++ b/drivers/iio/adc/ad7768-1.c @@ -736,7 +736,7 @@ static int ad7768_probe(struct spi_device *spi) static const struct spi_device_id ad7768_id_table[] = { { "ad7768-1", 0 }, - {} + { } }; MODULE_DEVICE_TABLE(spi, ad7768_id_table); diff --git a/drivers/iio/adc/ad7791.c b/drivers/iio/adc/ad7791.c index 597c2686ffa4..041fc25e3209 100644 --- a/drivers/iio/adc/ad7791.c +++ b/drivers/iio/adc/ad7791.c @@ -464,7 +464,7 @@ static const struct spi_device_id ad7791_spi_ids[] = { { "ad7789", AD7789 }, { "ad7790", AD7790 }, { "ad7791", AD7791 }, - {} + { } }; MODULE_DEVICE_TABLE(spi, ad7791_spi_ids); diff --git a/drivers/iio/adc/ad799x.c b/drivers/iio/adc/ad799x.c index 993f4651b73a..9c02f9199139 100644 --- a/drivers/iio/adc/ad799x.c +++ b/drivers/iio/adc/ad799x.c @@ -958,7 +958,7 @@ static const struct i2c_device_id ad799x_id[] = { { "ad7994", ad7994 }, { "ad7997", ad7997 }, { "ad7998", ad7998 }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, ad799x_id); diff --git a/drivers/iio/adc/adi-axi-adc.c b/drivers/iio/adc/adi-axi-adc.c index cf942c043457..4116c44197b8 100644 --- a/drivers/iio/adc/adi-axi-adc.c +++ b/drivers/iio/adc/adi-axi-adc.c @@ -702,7 +702,7 @@ static const struct of_device_id adi_axi_adc_of_match[] = { { .compatible = "adi,axi-adc-10.0.a", .data = &adc_generic }, { .compatible = "adi,axi-ad485x", .data = &adi_axi_ad485x }, { .compatible = "adi,axi-ad7606x", .data = &adc_ad7606 }, - { /* end of list */ } + { } }; MODULE_DEVICE_TABLE(of, adi_axi_adc_of_match); diff --git a/drivers/iio/adc/axp20x_adc.c b/drivers/iio/adc/axp20x_adc.c index 9fd7027623d0..71584ffd3632 100644 --- a/drivers/iio/adc/axp20x_adc.c +++ b/drivers/iio/adc/axp20x_adc.c @@ -163,14 +163,14 @@ static const struct iio_map axp20x_maps[] = { IIO_MAP("batt_v", "axp20x-battery-power-supply", "batt_v"), IIO_MAP("batt_chrg_i", "axp20x-battery-power-supply", "batt_chrg_i"), IIO_MAP("batt_dischrg_i", "axp20x-battery-power-supply", "batt_dischrg_i"), - { /* sentinel */ } + { } }; static const struct iio_map axp22x_maps[] = { IIO_MAP("batt_v", "axp20x-battery-power-supply", "batt_v"), IIO_MAP("batt_chrg_i", "axp20x-battery-power-supply", "batt_chrg_i"), IIO_MAP("batt_dischrg_i", "axp20x-battery-power-supply", "batt_dischrg_i"), - { /* sentinel */ } + { } }; static struct iio_map axp717_maps[] = { @@ -1074,7 +1074,7 @@ static const struct of_device_id axp20x_adc_of_match[] = { { .compatible = "x-powers,axp221-adc", .data = (void *)&axp22x_data, }, { .compatible = "x-powers,axp717-adc", .data = (void *)&axp717_data, }, { .compatible = "x-powers,axp813-adc", .data = (void *)&axp813_data, }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(of, axp20x_adc_of_match); @@ -1084,7 +1084,7 @@ static const struct platform_device_id axp20x_adc_id_match[] = { { .name = "axp22x-adc", .driver_data = (kernel_ulong_t)&axp22x_data, }, { .name = "axp717-adc", .driver_data = (kernel_ulong_t)&axp717_data, }, { .name = "axp813-adc", .driver_data = (kernel_ulong_t)&axp813_data, }, - { /* sentinel */ }, + { } }; MODULE_DEVICE_TABLE(platform, axp20x_adc_id_match); diff --git a/drivers/iio/adc/axp288_adc.c b/drivers/iio/adc/axp288_adc.c index 45542efc3ece..c8283279c477 100644 --- a/drivers/iio/adc/axp288_adc.c +++ b/drivers/iio/adc/axp288_adc.c @@ -110,7 +110,7 @@ static const struct iio_map axp288_adc_default_maps[] = { IIO_MAP("BATT_CHG_I", "axp288-chrg", "axp288-chrg-curr"), IIO_MAP("BATT_DISCHRG_I", "axp288-chrg", "axp288-chrg-d-curr"), IIO_MAP("BATT_V", "axp288-batt", "axp288-batt-volt"), - {}, + { } }; static int axp288_adc_read_channel(int *val, unsigned long address, @@ -207,7 +207,7 @@ static const struct dmi_system_id axp288_adc_ts_bias_override[] = { }, .driver_data = (void *)(uintptr_t)AXP288_ADC_TS_BIAS_80UA, }, - {} + { } }; static int axp288_adc_initialize(struct axp288_adc_info *info) diff --git a/drivers/iio/adc/cpcap-adc.c b/drivers/iio/adc/cpcap-adc.c index c218acf6c9c6..ba7cbd3b4822 100644 --- a/drivers/iio/adc/cpcap-adc.c +++ b/drivers/iio/adc/cpcap-adc.c @@ -942,7 +942,7 @@ static const struct of_device_id cpcap_adc_id_table[] = { .compatible = "motorola,mapphone-cpcap-adc", .data = &mapphone_adc, }, - { /* sentinel */ }, + { } }; MODULE_DEVICE_TABLE(of, cpcap_adc_id_table); diff --git a/drivers/iio/adc/da9150-gpadc.c b/drivers/iio/adc/da9150-gpadc.c index 0290345ade84..b99291ce2a45 100644 --- a/drivers/iio/adc/da9150-gpadc.c +++ b/drivers/iio/adc/da9150-gpadc.c @@ -296,7 +296,7 @@ static const struct iio_map da9150_gpadc_default_maps[] = { IIO_MAP("VBUS", "da9150-charger", "CHAN_VBUS"), IIO_MAP("TJUNC_CORE", "da9150-charger", "CHAN_TJUNC"), IIO_MAP("VBAT", "da9150-charger", "CHAN_VBAT"), - {}, + { } }; static int da9150_gpadc_probe(struct platform_device *pdev) diff --git a/drivers/iio/adc/envelope-detector.c b/drivers/iio/adc/envelope-detector.c index e911c25d106d..5b16fe737659 100644 --- a/drivers/iio/adc/envelope-detector.c +++ b/drivers/iio/adc/envelope-detector.c @@ -305,7 +305,7 @@ static const struct iio_chan_spec_ext_info envelope_detector_ext_info[] = { { .name = "compare_interval", .read = envelope_show_comp_interval, .write = envelope_store_comp_interval, }, - { /* sentinel */ } + { } }; static const struct iio_chan_spec envelope_detector_iio_channel = { @@ -390,7 +390,7 @@ static int envelope_detector_probe(struct platform_device *pdev) static const struct of_device_id envelope_detector_match[] = { { .compatible = "axentia,tse850-envelope-detector", }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(of, envelope_detector_match); diff --git a/drivers/iio/adc/fsl-imx25-gcq.c b/drivers/iio/adc/fsl-imx25-gcq.c index b3f037510e35..f8c220f6a7b4 100644 --- a/drivers/iio/adc/fsl-imx25-gcq.c +++ b/drivers/iio/adc/fsl-imx25-gcq.c @@ -372,7 +372,7 @@ static int mx25_gcq_probe(struct platform_device *pdev) static const struct of_device_id mx25_gcq_ids[] = { { .compatible = "fsl,imx25-gcq", }, - { /* Sentinel */ } + { } }; MODULE_DEVICE_TABLE(of, mx25_gcq_ids); diff --git a/drivers/iio/adc/hi8435.c b/drivers/iio/adc/hi8435.c index 689e34f06987..b4562aae8477 100644 --- a/drivers/iio/adc/hi8435.c +++ b/drivers/iio/adc/hi8435.c @@ -351,7 +351,7 @@ static const struct iio_enum hi8435_sensing_mode = { static const struct iio_chan_spec_ext_info hi8435_ext_info[] = { IIO_ENUM("sensing_mode", IIO_SEPARATE, &hi8435_sensing_mode), IIO_ENUM_AVAILABLE("sensing_mode", IIO_SHARED_BY_TYPE, &hi8435_sensing_mode), - {}, + { } }; #define HI8435_VOLTAGE_CHANNEL(num) \ diff --git a/drivers/iio/adc/imx7d_adc.c b/drivers/iio/adc/imx7d_adc.c index 828d3fea6d43..09ce71f6e941 100644 --- a/drivers/iio/adc/imx7d_adc.c +++ b/drivers/iio/adc/imx7d_adc.c @@ -413,7 +413,7 @@ static const struct iio_info imx7d_adc_iio_info = { static const struct of_device_id imx7d_adc_match[] = { { .compatible = "fsl,imx7d-adc", }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(of, imx7d_adc_match); diff --git a/drivers/iio/adc/imx8qxp-adc.c b/drivers/iio/adc/imx8qxp-adc.c index 3d19d7d744aa..be13a6ed7e00 100644 --- a/drivers/iio/adc/imx8qxp-adc.c +++ b/drivers/iio/adc/imx8qxp-adc.c @@ -481,7 +481,7 @@ static DEFINE_RUNTIME_DEV_PM_OPS(imx8qxp_adc_pm_ops, static const struct of_device_id imx8qxp_adc_match[] = { { .compatible = "nxp,imx8qxp-adc", }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(of, imx8qxp_adc_match); diff --git a/drivers/iio/adc/imx93_adc.c b/drivers/iio/adc/imx93_adc.c index 002eb19587d6..7feaafd2316f 100644 --- a/drivers/iio/adc/imx93_adc.c +++ b/drivers/iio/adc/imx93_adc.c @@ -464,7 +464,7 @@ static DEFINE_RUNTIME_DEV_PM_OPS(imx93_adc_pm_ops, static const struct of_device_id imx93_adc_match[] = { { .compatible = "nxp,imx93-adc", }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(of, imx93_adc_match); diff --git a/drivers/iio/adc/intel_mrfld_adc.c b/drivers/iio/adc/intel_mrfld_adc.c index c178850eaaab..101c1a0ce591 100644 --- a/drivers/iio/adc/intel_mrfld_adc.c +++ b/drivers/iio/adc/intel_mrfld_adc.c @@ -174,7 +174,7 @@ static const struct iio_map iio_maps[] = { IIO_MAP("CH6", "bcove-temp", "SYSTEMP0"), IIO_MAP("CH7", "bcove-temp", "SYSTEMP1"), IIO_MAP("CH8", "bcove-temp", "SYSTEMP2"), - {} + { } }; static int mrfld_adc_probe(struct platform_device *pdev) @@ -222,7 +222,7 @@ static int mrfld_adc_probe(struct platform_device *pdev) static const struct platform_device_id mrfld_adc_id_table[] = { { .name = "mrfld_bcove_adc" }, - {} + { } }; MODULE_DEVICE_TABLE(platform, mrfld_adc_id_table); diff --git a/drivers/iio/adc/lpc18xx_adc.c b/drivers/iio/adc/lpc18xx_adc.c index 450a243d1f7c..7e5d181ff702 100644 --- a/drivers/iio/adc/lpc18xx_adc.c +++ b/drivers/iio/adc/lpc18xx_adc.c @@ -188,7 +188,7 @@ static int lpc18xx_adc_probe(struct platform_device *pdev) static const struct of_device_id lpc18xx_adc_match[] = { { .compatible = "nxp,lpc1850-adc" }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(of, lpc18xx_adc_match); diff --git a/drivers/iio/adc/ltc2471.c b/drivers/iio/adc/ltc2471.c index 97c417c3a4eb..a579107fd5c9 100644 --- a/drivers/iio/adc/ltc2471.c +++ b/drivers/iio/adc/ltc2471.c @@ -138,7 +138,7 @@ static int ltc2471_i2c_probe(struct i2c_client *client) static const struct i2c_device_id ltc2471_i2c_id[] = { { "ltc2471", ltc2471 }, { "ltc2473", ltc2473 }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, ltc2471_i2c_id); diff --git a/drivers/iio/adc/max1363.c b/drivers/iio/adc/max1363.c index 35717ec082ce..d0546c681625 100644 --- a/drivers/iio/adc/max1363.c +++ b/drivers/iio/adc/max1363.c @@ -1551,7 +1551,7 @@ static const struct of_device_id max1363_of_match[] = { MAX1363_COMPATIBLE("maxim,max11645", max11645), MAX1363_COMPATIBLE("maxim,max11646", max11646), MAX1363_COMPATIBLE("maxim,max11647", max11647), - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(of, max1363_of_match); @@ -1672,7 +1672,7 @@ static const struct i2c_device_id max1363_id[] = { MAX1363_ID_TABLE("max11645", max11645), MAX1363_ID_TABLE("max11646", max11646), MAX1363_ID_TABLE("max11647", max11647), - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(i2c, max1363_id); diff --git a/drivers/iio/adc/max77541-adc.c b/drivers/iio/adc/max77541-adc.c index 21d024bde16b..0aa04d143ad4 100644 --- a/drivers/iio/adc/max77541-adc.c +++ b/drivers/iio/adc/max77541-adc.c @@ -176,7 +176,7 @@ static int max77541_adc_probe(struct platform_device *pdev) static const struct platform_device_id max77541_adc_platform_id[] = { { "max77541-adc" }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(platform, max77541_adc_platform_id); diff --git a/drivers/iio/adc/meson_saradc.c b/drivers/iio/adc/meson_saradc.c index c0f2a2ef0c68..4ff88603e4fc 100644 --- a/drivers/iio/adc/meson_saradc.c +++ b/drivers/iio/adc/meson_saradc.c @@ -1342,7 +1342,7 @@ static const struct of_device_id meson_sar_adc_of_match[] = { .compatible = "amlogic,meson-g12a-saradc", .data = &meson_sar_adc_g12a_data, }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(of, meson_sar_adc_of_match); diff --git a/drivers/iio/adc/mt6359-auxadc.c b/drivers/iio/adc/mt6359-auxadc.c index a4970cfb49a5..eecf88b05c6f 100644 --- a/drivers/iio/adc/mt6359-auxadc.c +++ b/drivers/iio/adc/mt6359-auxadc.c @@ -588,7 +588,7 @@ static const struct of_device_id mt6359_auxadc_of_match[] = { { .compatible = "mediatek,mt6357-auxadc", .data = &mt6357_chip_info }, { .compatible = "mediatek,mt6358-auxadc", .data = &mt6358_chip_info }, { .compatible = "mediatek,mt6359-auxadc", .data = &mt6359_chip_info }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(of, mt6359_auxadc_of_match); diff --git a/drivers/iio/adc/mt6370-adc.c b/drivers/iio/adc/mt6370-adc.c index 0bc112135bca..7c71fe5e8d31 100644 --- a/drivers/iio/adc/mt6370-adc.c +++ b/drivers/iio/adc/mt6370-adc.c @@ -336,7 +336,7 @@ static int mt6370_adc_probe(struct platform_device *pdev) static const struct of_device_id mt6370_adc_of_id[] = { { .compatible = "mediatek,mt6370-adc", }, - {} + { } }; MODULE_DEVICE_TABLE(of, mt6370_adc_of_id); diff --git a/drivers/iio/adc/npcm_adc.c b/drivers/iio/adc/npcm_adc.c index 7c1511ee3a4b..c8283873cdee 100644 --- a/drivers/iio/adc/npcm_adc.c +++ b/drivers/iio/adc/npcm_adc.c @@ -196,7 +196,7 @@ static const struct iio_info npcm_adc_iio_info = { static const struct of_device_id npcm_adc_match[] = { { .compatible = "nuvoton,npcm750-adc", .data = &npxm7xx_adc_info}, { .compatible = "nuvoton,npcm845-adc", .data = &npxm8xx_adc_info}, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(of, npcm_adc_match); diff --git a/drivers/iio/adc/pac1921.c b/drivers/iio/adc/pac1921.c index beb5511c4504..ef75e9e51c24 100644 --- a/drivers/iio/adc/pac1921.c +++ b/drivers/iio/adc/pac1921.c @@ -900,7 +900,7 @@ static ssize_t pac1921_read_scale_avail(struct iio_dev *indio_dev, static const struct iio_chan_spec_ext_info pac1921_ext_info_voltage[] = { PAC1921_EXT_INFO_SCALE_AVAIL, - {} + { } }; static const struct iio_chan_spec_ext_info pac1921_ext_info_current[] = { @@ -911,7 +911,7 @@ static const struct iio_chan_spec_ext_info pac1921_ext_info_current[] = { .write = pac1921_write_shunt_resistor, .shared = IIO_SEPARATE, }, - {} + { } }; static const struct iio_event_spec pac1921_overflow_event[] = { diff --git a/drivers/iio/adc/palmas_gpadc.c b/drivers/iio/adc/palmas_gpadc.c index d283ee8fb1d2..7c01e33be04c 100644 --- a/drivers/iio/adc/palmas_gpadc.c +++ b/drivers/iio/adc/palmas_gpadc.c @@ -1164,7 +1164,7 @@ static DEFINE_SIMPLE_DEV_PM_OPS(palmas_pm_ops, palmas_gpadc_suspend, static const struct of_device_id of_palmas_gpadc_match_tbl[] = { { .compatible = "ti,palmas-gpadc", }, - { /* end */ } + { } }; MODULE_DEVICE_TABLE(of, of_palmas_gpadc_match_tbl); diff --git a/drivers/iio/adc/rcar-gyroadc.c b/drivers/iio/adc/rcar-gyroadc.c index 221c075da198..cc326f21d398 100644 --- a/drivers/iio/adc/rcar-gyroadc.c +++ b/drivers/iio/adc/rcar-gyroadc.c @@ -307,7 +307,7 @@ static const struct of_device_id rcar_gyroadc_child_match[] __maybe_unused = { .compatible = "maxim,max11100", .data = (void *)RCAR_GYROADC_MODE_SELECT_3_MAX1162, }, - { /* sentinel */ } + { } }; static int rcar_gyroadc_parse_subdevs(struct iio_dev *indio_dev) diff --git a/drivers/iio/adc/rn5t618-adc.c b/drivers/iio/adc/rn5t618-adc.c index b33536157adc..d6f6b351f2af 100644 --- a/drivers/iio/adc/rn5t618-adc.c +++ b/drivers/iio/adc/rn5t618-adc.c @@ -188,7 +188,7 @@ static const struct iio_chan_spec rn5t618_adc_iio_channels[] = { static const struct iio_map rn5t618_maps[] = { IIO_MAP("VADP", "rn5t618-power", "vadp"), IIO_MAP("VUSB", "rn5t618-power", "vusb"), - { /* sentinel */ } + { } }; static int rn5t618_adc_probe(struct platform_device *pdev) diff --git a/drivers/iio/adc/rzg2l_adc.c b/drivers/iio/adc/rzg2l_adc.c index 8097e59da516..9674d48074c9 100644 --- a/drivers/iio/adc/rzg2l_adc.c +++ b/drivers/iio/adc/rzg2l_adc.c @@ -507,7 +507,7 @@ static const struct rzg2l_adc_hw_params rzg3s_hw_params = { static const struct of_device_id rzg2l_adc_match[] = { { .compatible = "renesas,r9a08g045-adc", .data = &rzg3s_hw_params }, { .compatible = "renesas,rzg2l-adc", .data = &rzg2l_hw_params }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(of, rzg2l_adc_match); diff --git a/drivers/iio/adc/spear_adc.c b/drivers/iio/adc/spear_adc.c index b6dd096391c1..e3a865c79686 100644 --- a/drivers/iio/adc/spear_adc.c +++ b/drivers/iio/adc/spear_adc.c @@ -345,7 +345,7 @@ static int spear_adc_probe(struct platform_device *pdev) static const struct of_device_id spear_adc_dt_ids[] = { { .compatible = "st,spear600-adc", }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(of, spear_adc_dt_ids); diff --git a/drivers/iio/adc/stm32-adc.c b/drivers/iio/adc/stm32-adc.c index 5dbf5f136768..27aec9a18a0f 100644 --- a/drivers/iio/adc/stm32-adc.c +++ b/drivers/iio/adc/stm32-adc.c @@ -469,7 +469,7 @@ static struct stm32_adc_trig_info stm32h7_adc_trigs[] = { { LPTIM1_OUT, STM32_EXT18 }, { LPTIM2_OUT, STM32_EXT19 }, { LPTIM3_OUT, STM32_EXT20 }, - {}, + { } }; /* @@ -1876,7 +1876,7 @@ static const struct iio_chan_spec_ext_info stm32_adc_ext_info[] = { .read = iio_enum_available_read, .private = (uintptr_t)&stm32_adc_trig_pol, }, - {}, + { } }; static void stm32_adc_debugfs_init(struct iio_dev *indio_dev) diff --git a/drivers/iio/adc/stm32-dfsdm-adc.c b/drivers/iio/adc/stm32-dfsdm-adc.c index 726ddafc9f6d..f583924eb16b 100644 --- a/drivers/iio/adc/stm32-dfsdm-adc.c +++ b/drivers/iio/adc/stm32-dfsdm-adc.c @@ -108,7 +108,7 @@ static const struct stm32_dfsdm_str2field stm32_dfsdm_chan_type[] = { { "SPI_F", 1 }, /* SPI with data on falling edge */ { "MANCH_R", 2 }, /* Manchester codec, rising edge = logic 0 */ { "MANCH_F", 3 }, /* Manchester codec, falling edge = logic 1 */ - {}, + { } }; /* DFSDM channel clock source */ @@ -121,7 +121,7 @@ static const struct stm32_dfsdm_str2field stm32_dfsdm_chan_src[] = { { "CLKOUT_F", DFSDM_CHANNEL_SPI_CLOCK_INTERNAL_DIV2_FALLING }, /* Internal SPI clock divided by 2 (falling edge) */ { "CLKOUT_R", DFSDM_CHANNEL_SPI_CLOCK_INTERNAL_DIV2_RISING }, - {}, + { } }; static int stm32_dfsdm_str2val(const char *str, @@ -167,7 +167,7 @@ static const struct stm32_dfsdm_trig_info stm32_dfsdm_trigs[] = { { LPTIM1_OUT, 26 }, { LPTIM2_OUT, 27 }, { LPTIM3_OUT, 28 }, - {}, + { } }; static int stm32_dfsdm_get_jextsel(struct iio_dev *indio_dev, @@ -1747,7 +1747,7 @@ static const struct of_device_id stm32_dfsdm_adc_match[] = { .compatible = "st,stm32-dfsdm-dmic", .data = &stm32h7_dfsdm_audio_data, }, - {} + { } }; MODULE_DEVICE_TABLE(of, stm32_dfsdm_adc_match); diff --git a/drivers/iio/adc/sun20i-gpadc-iio.c b/drivers/iio/adc/sun20i-gpadc-iio.c index 2428ea69d676..e4dfe76e6362 100644 --- a/drivers/iio/adc/sun20i-gpadc-iio.c +++ b/drivers/iio/adc/sun20i-gpadc-iio.c @@ -243,7 +243,7 @@ static int sun20i_gpadc_probe(struct platform_device *pdev) static const struct of_device_id sun20i_gpadc_of_id[] = { { .compatible = "allwinner,sun20i-d1-gpadc" }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(of, sun20i_gpadc_of_id); diff --git a/drivers/iio/adc/sun4i-gpadc-iio.c b/drivers/iio/adc/sun4i-gpadc-iio.c index 8b27458dcd66..6b8d6bee1873 100644 --- a/drivers/iio/adc/sun4i-gpadc-iio.c +++ b/drivers/iio/adc/sun4i-gpadc-iio.c @@ -116,7 +116,7 @@ struct sun4i_gpadc_iio { static const struct iio_map sun4i_gpadc_hwmon_maps[] = { IIO_MAP("temp_adc", "iio_hwmon.0", NULL), - { /* sentinel */ }, + { } }; static const struct iio_chan_spec sun4i_gpadc_channels[] = { @@ -485,7 +485,7 @@ static const struct of_device_id sun4i_gpadc_of_id[] = { .compatible = "allwinner,sun8i-a33-ths", .data = &sun8i_a33_gpadc_data, }, - { /* sentinel */ } + { } }; static int sun4i_gpadc_probe_dt(struct platform_device *pdev, @@ -685,7 +685,7 @@ static const struct platform_device_id sun4i_gpadc_id[] = { { "sun4i-a10-gpadc-iio", (kernel_ulong_t)&sun4i_gpadc_data }, { "sun5i-a13-gpadc-iio", (kernel_ulong_t)&sun5i_gpadc_data }, { "sun6i-a31-gpadc-iio", (kernel_ulong_t)&sun6i_gpadc_data }, - { /* sentinel */ }, + { } }; MODULE_DEVICE_TABLE(platform, sun4i_gpadc_id); diff --git a/drivers/iio/adc/ti-lmp92064.c b/drivers/iio/adc/ti-lmp92064.c index 1e4a78677fe5..86eef3320de9 100644 --- a/drivers/iio/adc/ti-lmp92064.c +++ b/drivers/iio/adc/ti-lmp92064.c @@ -366,7 +366,7 @@ MODULE_DEVICE_TABLE(spi, lmp92064_id_table); static const struct of_device_id lmp92064_of_table[] = { { .compatible = "ti,lmp92064" }, - {} + { } }; MODULE_DEVICE_TABLE(of, lmp92064_of_table); diff --git a/drivers/iio/adc/twl6030-gpadc.c b/drivers/iio/adc/twl6030-gpadc.c index ef7430e6877d..3ac774ebf678 100644 --- a/drivers/iio/adc/twl6030-gpadc.c +++ b/drivers/iio/adc/twl6030-gpadc.c @@ -871,7 +871,7 @@ static const struct of_device_id of_twl6030_match_tbl[] = { .compatible = "ti,twl6032-gpadc", .data = &twl6032_pdata, }, - { /* end */ } + { } }; MODULE_DEVICE_TABLE(of, of_twl6030_match_tbl); diff --git a/drivers/iio/adc/vf610_adc.c b/drivers/iio/adc/vf610_adc.c index f506ca4150b1..805e1973b090 100644 --- a/drivers/iio/adc/vf610_adc.c +++ b/drivers/iio/adc/vf610_adc.c @@ -505,7 +505,7 @@ static const struct iio_enum vf610_conversion_mode = { static const struct iio_chan_spec_ext_info vf610_ext_info[] = { IIO_ENUM("conversion_mode", IIO_SHARED_BY_DIR, &vf610_conversion_mode), - {}, + { } }; #define VF610_ADC_CHAN(_idx, _chan_type) { \ @@ -813,7 +813,7 @@ static const struct vf610_chip_info imx6sx_chip_info = { static const struct of_device_id vf610_adc_match[] = { { .compatible = "fsl,imx6sx-adc", .data = &imx6sx_chip_info}, { .compatible = "fsl,vf610-adc", .data = &vf610_chip_info}, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(of, vf610_adc_match); diff --git a/drivers/iio/adc/xilinx-xadc-core.c b/drivers/iio/adc/xilinx-xadc-core.c index e1f8740ae688..e257c1b94a5f 100644 --- a/drivers/iio/adc/xilinx-xadc-core.c +++ b/drivers/iio/adc/xilinx-xadc-core.c @@ -1186,7 +1186,7 @@ static const struct of_device_id xadc_of_match_table[] = { .compatible = "xlnx,system-management-wiz-1.3", .data = &xadc_us_axi_ops }, - { }, + { } }; MODULE_DEVICE_TABLE(of, xadc_of_match_table); diff --git a/drivers/iio/addac/ad74413r.c b/drivers/iio/addac/ad74413r.c index adfa14c4b06f..f0929616ab89 100644 --- a/drivers/iio/addac/ad74413r.c +++ b/drivers/iio/addac/ad74413r.c @@ -1505,14 +1505,14 @@ static const struct of_device_id ad74413r_dt_id[] = { .compatible = "adi,ad74413r", .data = &ad74413r_chip_info_data, }, - {}, + { } }; MODULE_DEVICE_TABLE(of, ad74413r_dt_id); static const struct spi_device_id ad74413r_spi_id[] = { { .name = "ad74412r", .driver_data = (kernel_ulong_t)&ad74412r_chip_info_data }, { .name = "ad74413r", .driver_data = (kernel_ulong_t)&ad74413r_chip_info_data }, - {} + { } }; MODULE_DEVICE_TABLE(spi, ad74413r_spi_id); diff --git a/drivers/iio/afe/iio-rescale.c b/drivers/iio/afe/iio-rescale.c index b6a46036d5ea..ecaf59278c6f 100644 --- a/drivers/iio/afe/iio-rescale.c +++ b/drivers/iio/afe/iio-rescale.c @@ -514,7 +514,7 @@ static const struct of_device_id rescale_match[] = { .data = &rescale_cfg[TEMP_SENSE_RTD], }, { .compatible = "temperature-transducer", .data = &rescale_cfg[TEMP_TRANSDUCER], }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(of, rescale_match); diff --git a/drivers/iio/amplifiers/ad8366.c b/drivers/iio/amplifiers/ad8366.c index 31564afb13a2..e73c9b983395 100644 --- a/drivers/iio/amplifiers/ad8366.c +++ b/drivers/iio/amplifiers/ad8366.c @@ -330,7 +330,7 @@ static const struct spi_device_id ad8366_id[] = { {"adl5240", ID_ADL5240}, {"hmc792a", ID_HMC792}, {"hmc1119", ID_HMC1119}, - {} + { } }; MODULE_DEVICE_TABLE(spi, ad8366_id); diff --git a/drivers/iio/amplifiers/ada4250.c b/drivers/iio/amplifiers/ada4250.c index 566f0e1c98a5..74f8429d652b 100644 --- a/drivers/iio/amplifiers/ada4250.c +++ b/drivers/iio/amplifiers/ada4250.c @@ -378,13 +378,13 @@ static int ada4250_probe(struct spi_device *spi) static const struct spi_device_id ada4250_id[] = { { "ada4250", 0 }, - {} + { } }; MODULE_DEVICE_TABLE(spi, ada4250_id); static const struct of_device_id ada4250_of_match[] = { { .compatible = "adi,ada4250" }, - {}, + { } }; MODULE_DEVICE_TABLE(of, ada4250_of_match); diff --git a/drivers/iio/amplifiers/hmc425a.c b/drivers/iio/amplifiers/hmc425a.c index e92d7f399e33..4dbf894c7e3b 100644 --- a/drivers/iio/amplifiers/hmc425a.c +++ b/drivers/iio/amplifiers/hmc425a.c @@ -270,7 +270,7 @@ static const struct iio_chan_spec_ext_info ltc6373_ext_info[] = { .write = ltc6373_write_powerdown, .shared = IIO_SEPARATE, }, - {} + { } }; #define HMC425A_CHAN(_channel) \ @@ -407,7 +407,7 @@ static const struct of_device_id hmc425a_of_match[] = { .data = &hmc425a_chip_info_tbl[ID_ADRF5740]}, { .compatible = "adi,ltc6373", .data = &hmc425a_chip_info_tbl[ID_LTC6373]}, - {} + { } }; MODULE_DEVICE_TABLE(of, hmc425a_of_match); diff --git a/drivers/iio/cdc/ad7150.c b/drivers/iio/cdc/ad7150.c index e64a41bae32c..427d32e398b3 100644 --- a/drivers/iio/cdc/ad7150.c +++ b/drivers/iio/cdc/ad7150.c @@ -631,7 +631,7 @@ static const struct i2c_device_id ad7150_id[] = { { "ad7150", AD7150 }, { "ad7151", AD7151 }, { "ad7156", AD7150 }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, ad7150_id); @@ -640,7 +640,7 @@ static const struct of_device_id ad7150_of_match[] = { { "adi,ad7150" }, { "adi,ad7151" }, { "adi,ad7156" }, - {} + { } }; static struct i2c_driver ad7150_driver = { .driver = { diff --git a/drivers/iio/cdc/ad7746.c b/drivers/iio/cdc/ad7746.c index ba18dbbe0940..8a306d55c72a 100644 --- a/drivers/iio/cdc/ad7746.c +++ b/drivers/iio/cdc/ad7746.c @@ -792,7 +792,7 @@ static const struct i2c_device_id ad7746_id[] = { { "ad7745", 7745 }, { "ad7746", 7746 }, { "ad7747", 7747 }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, ad7746_id); @@ -800,7 +800,7 @@ static const struct of_device_id ad7746_of_match[] = { { .compatible = "adi,ad7745" }, { .compatible = "adi,ad7746" }, { .compatible = "adi,ad7747" }, - { }, + { } }; MODULE_DEVICE_TABLE(of, ad7746_of_match); diff --git a/drivers/iio/chemical/ags02ma.c b/drivers/iio/chemical/ags02ma.c index 8fcd80946543..151178d4e8f4 100644 --- a/drivers/iio/chemical/ags02ma.c +++ b/drivers/iio/chemical/ags02ma.c @@ -140,13 +140,13 @@ static int ags02ma_probe(struct i2c_client *client) static const struct i2c_device_id ags02ma_id_table[] = { { "ags02ma" }, - { /* Sentinel */ } + { } }; MODULE_DEVICE_TABLE(i2c, ags02ma_id_table); static const struct of_device_id ags02ma_of_table[] = { { .compatible = "aosong,ags02ma" }, - { /* Sentinel */ } + { } }; MODULE_DEVICE_TABLE(of, ags02ma_of_table); diff --git a/drivers/iio/chemical/atlas-ezo-sensor.c b/drivers/iio/chemical/atlas-ezo-sensor.c index 761a853a4d17..de0b87edd188 100644 --- a/drivers/iio/chemical/atlas-ezo-sensor.c +++ b/drivers/iio/chemical/atlas-ezo-sensor.c @@ -189,7 +189,7 @@ static const struct i2c_device_id atlas_ezo_id[] = { { "atlas-co2-ezo", (kernel_ulong_t)&atlas_ezo_devices[ATLAS_CO2_EZO] }, { "atlas-o2-ezo", (kernel_ulong_t)&atlas_ezo_devices[ATLAS_O2_EZO] }, { "atlas-hum-ezo", (kernel_ulong_t)&atlas_ezo_devices[ATLAS_HUM_EZO] }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, atlas_ezo_id); @@ -197,7 +197,7 @@ static const struct of_device_id atlas_ezo_dt_ids[] = { { .compatible = "atlas,co2-ezo", .data = &atlas_ezo_devices[ATLAS_CO2_EZO], }, { .compatible = "atlas,o2-ezo", .data = &atlas_ezo_devices[ATLAS_O2_EZO], }, { .compatible = "atlas,hum-ezo", .data = &atlas_ezo_devices[ATLAS_HUM_EZO], }, - {} + { } }; MODULE_DEVICE_TABLE(of, atlas_ezo_dt_ids); diff --git a/drivers/iio/chemical/atlas-sensor.c b/drivers/iio/chemical/atlas-sensor.c index 593b73ccbeb7..bde473f9483f 100644 --- a/drivers/iio/chemical/atlas-sensor.c +++ b/drivers/iio/chemical/atlas-sensor.c @@ -593,7 +593,7 @@ static const struct i2c_device_id atlas_id[] = { { "atlas-orp-sm", (kernel_ulong_t)&atlas_devices[ATLAS_ORP_SM] }, { "atlas-do-sm", (kernel_ulong_t)&atlas_devices[ATLAS_DO_SM] }, { "atlas-rtd-sm", (kernel_ulong_t)&atlas_devices[ATLAS_RTD_SM] }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, atlas_id); diff --git a/drivers/iio/chemical/bme680_i2c.c b/drivers/iio/chemical/bme680_i2c.c index ac7763f98a6a..5560ea708b36 100644 --- a/drivers/iio/chemical/bme680_i2c.c +++ b/drivers/iio/chemical/bme680_i2c.c @@ -37,13 +37,13 @@ static int bme680_i2c_probe(struct i2c_client *client) static const struct i2c_device_id bme680_i2c_id[] = { { "bme680" }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, bme680_i2c_id); static const struct of_device_id bme680_of_i2c_match[] = { { .compatible = "bosch,bme680", }, - {}, + { } }; MODULE_DEVICE_TABLE(of, bme680_of_i2c_match); diff --git a/drivers/iio/chemical/bme680_spi.c b/drivers/iio/chemical/bme680_spi.c index ecb24ba0ebc9..ced5af23846a 100644 --- a/drivers/iio/chemical/bme680_spi.c +++ b/drivers/iio/chemical/bme680_spi.c @@ -140,13 +140,13 @@ static int bme680_spi_probe(struct spi_device *spi) static const struct spi_device_id bme680_spi_id[] = { {"bme680", 0}, - {}, + { } }; MODULE_DEVICE_TABLE(spi, bme680_spi_id); static const struct of_device_id bme680_of_spi_match[] = { { .compatible = "bosch,bme680", }, - {}, + { } }; MODULE_DEVICE_TABLE(of, bme680_of_spi_match); diff --git a/drivers/iio/chemical/sunrise_co2.c b/drivers/iio/chemical/sunrise_co2.c index cdb8696a4e81..af79efde37e8 100644 --- a/drivers/iio/chemical/sunrise_co2.c +++ b/drivers/iio/chemical/sunrise_co2.c @@ -373,7 +373,7 @@ static const struct iio_chan_spec_ext_info sunrise_concentration_ext_info[] = { .read = iio_enum_available_read, .private = (uintptr_t)&sunrise_error_statuses_enum, }, - {} + { } }; static const struct iio_chan_spec sunrise_channels[] = { @@ -519,7 +519,7 @@ static int sunrise_probe(struct i2c_client *client) static const struct of_device_id sunrise_of_match[] = { { .compatible = "senseair,sunrise-006-0-0007" }, - {} + { } }; MODULE_DEVICE_TABLE(of, sunrise_of_match); diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_lid_angle.c b/drivers/iio/common/cros_ec_sensors/cros_ec_lid_angle.c index 119acb078af3..2d3d148b4206 100644 --- a/drivers/iio/common/cros_ec_sensors/cros_ec_lid_angle.c +++ b/drivers/iio/common/cros_ec_sensors/cros_ec_lid_angle.c @@ -121,7 +121,7 @@ static const struct platform_device_id cros_ec_lid_angle_ids[] = { { .name = DRV_NAME, }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(platform, cros_ec_lid_angle_ids); diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c index 66153b1850f1..82cef4a12442 100644 --- a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c +++ b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c @@ -311,7 +311,7 @@ static const struct platform_device_id cros_ec_sensors_ids[] = { { .name = "cros-ec-mag", }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(platform, cros_ec_sensors_ids); diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c index 40d5b10c74e0..576d7b451767 100644 --- a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c +++ b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c @@ -480,7 +480,7 @@ const struct iio_chan_spec_ext_info cros_ec_sensors_ext_info[] = { .shared = IIO_SHARED_BY_ALL, .read = cros_ec_sensors_id }, - { }, + { } }; EXPORT_SYMBOL_GPL(cros_ec_sensors_ext_info); diff --git a/drivers/iio/common/scmi_sensors/scmi_iio.c b/drivers/iio/common/scmi_sensors/scmi_iio.c index 1a62dd902f05..da516c46e057 100644 --- a/drivers/iio/common/scmi_sensors/scmi_iio.c +++ b/drivers/iio/common/scmi_sensors/scmi_iio.c @@ -417,7 +417,7 @@ static const struct iio_chan_spec_ext_info scmi_iio_ext_info[] = { .read = scmi_iio_get_raw_available, .shared = IIO_SHARED_BY_TYPE, }, - {}, + { } }; static void scmi_iio_set_timestamp_channel(struct iio_chan_spec *iio_chan, @@ -704,7 +704,7 @@ static int scmi_iio_dev_probe(struct scmi_device *sdev) static const struct scmi_device_id scmi_id_table[] = { { SCMI_PROTOCOL_SENSOR, "iiodev" }, - {}, + { } }; MODULE_DEVICE_TABLE(scmi, scmi_id_table); diff --git a/drivers/iio/common/ssp_sensors/ssp_dev.c b/drivers/iio/common/ssp_sensors/ssp_dev.c index 22ea10eb48ae..7c488672936f 100644 --- a/drivers/iio/common/ssp_sensors/ssp_dev.c +++ b/drivers/iio/common/ssp_sensors/ssp_dev.c @@ -434,7 +434,7 @@ static const struct of_device_id ssp_of_match[] = { .compatible = "samsung,sensorhub-thermostat", .data = &ssp_thermostat_info, }, - {}, + { } }; MODULE_DEVICE_TABLE(of, ssp_of_match); diff --git a/drivers/iio/dac/ad5064.c b/drivers/iio/dac/ad5064.c index 905988724f27..84be5174babd 100644 --- a/drivers/iio/dac/ad5064.c +++ b/drivers/iio/dac/ad5064.c @@ -378,7 +378,7 @@ static const struct iio_chan_spec_ext_info ad5064_ext_info[] = { }, IIO_ENUM("powerdown_mode", IIO_SEPARATE, &ad5064_powerdown_mode_enum), IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &ad5064_powerdown_mode_enum), - { }, + { } }; static const struct iio_chan_spec_ext_info ltc2617_ext_info[] = { @@ -390,7 +390,7 @@ static const struct iio_chan_spec_ext_info ltc2617_ext_info[] = { }, IIO_ENUM("powerdown_mode", IIO_SEPARATE, <c2617_powerdown_mode_enum), IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, <c2617_powerdown_mode_enum), - { }, + { } }; #define AD5064_CHANNEL(chan, addr, bits, _shift, _ext_info) { \ @@ -936,7 +936,7 @@ static const struct spi_device_id ad5064_spi_ids[] = { {"ad5668-1", ID_AD5668_1}, {"ad5668-2", ID_AD5668_2}, {"ad5668-3", ID_AD5668_2}, /* similar enough to ad5668-2 */ - {} + { } }; MODULE_DEVICE_TABLE(spi, ad5064_spi_ids); @@ -1048,7 +1048,7 @@ static const struct i2c_device_id ad5064_i2c_ids[] = { {"ltc2635-h10", ID_LTC2635_H10}, {"ltc2635-l8", ID_LTC2635_L8}, {"ltc2635-h8", ID_LTC2635_H8}, - {} + { } }; MODULE_DEVICE_TABLE(i2c, ad5064_i2c_ids); diff --git a/drivers/iio/dac/ad5360.c b/drivers/iio/dac/ad5360.c index e0b7f658d611..a57b0a093112 100644 --- a/drivers/iio/dac/ad5360.c +++ b/drivers/iio/dac/ad5360.c @@ -542,7 +542,7 @@ static const struct spi_device_id ad5360_ids[] = { { "ad5371", ID_AD5371 }, { "ad5372", ID_AD5372 }, { "ad5373", ID_AD5373 }, - {} + { } }; MODULE_DEVICE_TABLE(spi, ad5360_ids); diff --git a/drivers/iio/dac/ad5380.c b/drivers/iio/dac/ad5380.c index 392a1c7aee03..f63af704b77e 100644 --- a/drivers/iio/dac/ad5380.c +++ b/drivers/iio/dac/ad5380.c @@ -246,7 +246,7 @@ static const struct iio_chan_spec_ext_info ad5380_ext_info[] = { IIO_ENUM("powerdown_mode", IIO_SHARED_BY_TYPE, &ad5380_powerdown_mode_enum), IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &ad5380_powerdown_mode_enum), - { }, + { } }; #define AD5380_CHANNEL(_bits) { \ diff --git a/drivers/iio/dac/ad5446.c b/drivers/iio/dac/ad5446.c index 6ad99f97eed5..ad304b0fec08 100644 --- a/drivers/iio/dac/ad5446.c +++ b/drivers/iio/dac/ad5446.c @@ -141,7 +141,7 @@ static const struct iio_chan_spec_ext_info ad5446_ext_info_powerdown[] = { }, IIO_ENUM("powerdown_mode", IIO_SEPARATE, &ad5446_powerdown_mode_enum), IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &ad5446_powerdown_mode_enum), - { }, + { } }; #define _AD5446_CHANNEL(bits, storage, _shift, ext) { \ @@ -440,7 +440,7 @@ static const struct spi_device_id ad5446_spi_ids[] = { {"dac101s101", ID_AD5310}, {"dac121s101", ID_AD5320}, {"dac7512", ID_AD5320}, - {} + { } }; MODULE_DEVICE_TABLE(spi, ad5446_spi_ids); @@ -543,7 +543,7 @@ static const struct i2c_device_id ad5446_i2c_ids[] = { {"ad5602", ID_AD5602}, {"ad5612", ID_AD5612}, {"ad5622", ID_AD5622}, - {} + { } }; MODULE_DEVICE_TABLE(i2c, ad5446_i2c_ids); diff --git a/drivers/iio/dac/ad5449.c b/drivers/iio/dac/ad5449.c index 1c996016756a..d8c325260259 100644 --- a/drivers/iio/dac/ad5449.c +++ b/drivers/iio/dac/ad5449.c @@ -337,7 +337,7 @@ static const struct spi_device_id ad5449_spi_ids[] = { { "ad5439", ID_AD5439 }, { "ad5443", ID_AD5443 }, { "ad5449", ID_AD5449 }, - {} + { } }; MODULE_DEVICE_TABLE(spi, ad5449_spi_ids); diff --git a/drivers/iio/dac/ad5504.c b/drivers/iio/dac/ad5504.c index ff0765c8af47..355bcb6a8ba0 100644 --- a/drivers/iio/dac/ad5504.c +++ b/drivers/iio/dac/ad5504.c @@ -242,7 +242,7 @@ static const struct iio_chan_spec_ext_info ad5504_ext_info[] = { IIO_ENUM("powerdown_mode", IIO_SHARED_BY_TYPE, &ad5504_powerdown_mode_enum), IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &ad5504_powerdown_mode_enum), - { }, + { } }; #define AD5504_CHANNEL(_chan) { \ @@ -320,7 +320,7 @@ static int ad5504_probe(struct spi_device *spi) static const struct spi_device_id ad5504_id[] = { {"ad5504", ID_AD5504}, {"ad5501", ID_AD5501}, - {} + { } }; MODULE_DEVICE_TABLE(spi, ad5504_id); diff --git a/drivers/iio/dac/ad5592r-base.c b/drivers/iio/dac/ad5592r-base.c index ed7a3dd6be83..217a8a88818d 100644 --- a/drivers/iio/dac/ad5592r-base.c +++ b/drivers/iio/dac/ad5592r-base.c @@ -470,7 +470,7 @@ static const struct iio_chan_spec_ext_info ad5592r_ext_info[] = { .read = ad5592r_show_scale_available, .shared = IIO_SHARED_BY_TYPE, }, - {}, + { } }; static void ad5592r_setup_channel(struct iio_dev *iio_dev, diff --git a/drivers/iio/dac/ad5592r.c b/drivers/iio/dac/ad5592r.c index fd82d8701322..92d1b629b85d 100644 --- a/drivers/iio/dac/ad5592r.c +++ b/drivers/iio/dac/ad5592r.c @@ -137,19 +137,19 @@ static void ad5592r_spi_remove(struct spi_device *spi) static const struct spi_device_id ad5592r_spi_ids[] = { { .name = "ad5592r", }, - {} + { } }; MODULE_DEVICE_TABLE(spi, ad5592r_spi_ids); static const struct of_device_id ad5592r_of_match[] = { { .compatible = "adi,ad5592r", }, - {}, + { } }; MODULE_DEVICE_TABLE(of, ad5592r_of_match); static const struct acpi_device_id ad5592r_acpi_match[] = { {"ADS5592", }, - { }, + { } }; MODULE_DEVICE_TABLE(acpi, ad5592r_acpi_match); diff --git a/drivers/iio/dac/ad5593r.c b/drivers/iio/dac/ad5593r.c index ddd13ad821a7..9a8525c61173 100644 --- a/drivers/iio/dac/ad5593r.c +++ b/drivers/iio/dac/ad5593r.c @@ -116,19 +116,19 @@ static void ad5593r_i2c_remove(struct i2c_client *i2c) static const struct i2c_device_id ad5593r_i2c_ids[] = { { .name = "ad5593r", }, - {}, + { } }; MODULE_DEVICE_TABLE(i2c, ad5593r_i2c_ids); static const struct of_device_id ad5593r_of_match[] = { { .compatible = "adi,ad5593r", }, - {}, + { } }; MODULE_DEVICE_TABLE(of, ad5593r_of_match); static const struct acpi_device_id ad5593r_acpi_match[] = { {"ADS5593", }, - { }, + { } }; MODULE_DEVICE_TABLE(acpi, ad5593r_acpi_match); diff --git a/drivers/iio/dac/ad5624r_spi.c b/drivers/iio/dac/ad5624r_spi.c index 2fd38ac8f698..13aefe769bad 100644 --- a/drivers/iio/dac/ad5624r_spi.c +++ b/drivers/iio/dac/ad5624r_spi.c @@ -160,7 +160,7 @@ static const struct iio_chan_spec_ext_info ad5624r_ext_info[] = { IIO_ENUM("powerdown_mode", IIO_SHARED_BY_TYPE, &ad5624r_powerdown_mode_enum), IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &ad5624r_powerdown_mode_enum), - { }, + { } }; #define AD5624R_CHANNEL(_chan, _bits) { \ @@ -266,7 +266,7 @@ static const struct spi_device_id ad5624r_id[] = { {"ad5624r5", ID_AD5624R5}, {"ad5644r5", ID_AD5644R5}, {"ad5664r5", ID_AD5664R5}, - {} + { } }; MODULE_DEVICE_TABLE(spi, ad5624r_id); diff --git a/drivers/iio/dac/ad5686-spi.c b/drivers/iio/dac/ad5686-spi.c index 9c727aa6ea18..df8619e0c092 100644 --- a/drivers/iio/dac/ad5686-spi.c +++ b/drivers/iio/dac/ad5686-spi.c @@ -112,7 +112,7 @@ static const struct spi_device_id ad5686_spi_id[] = { {"ad5685r", ID_AD5685R}, {"ad5686", ID_AD5686}, {"ad5686r", ID_AD5686R}, - {} + { } }; MODULE_DEVICE_TABLE(spi, ad5686_spi_id); diff --git a/drivers/iio/dac/ad5686.c b/drivers/iio/dac/ad5686.c index 763af690c444..d9cae9555e5d 100644 --- a/drivers/iio/dac/ad5686.c +++ b/drivers/iio/dac/ad5686.c @@ -185,7 +185,7 @@ static const struct iio_chan_spec_ext_info ad5686_ext_info[] = { }, IIO_ENUM("powerdown_mode", IIO_SEPARATE, &ad5686_powerdown_mode_enum), IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &ad5686_powerdown_mode_enum), - { }, + { } }; #define AD5868_CHANNEL(chan, addr, bits, _shift) { \ diff --git a/drivers/iio/dac/ad5696-i2c.c b/drivers/iio/dac/ad5696-i2c.c index 0156f32c12c8..d3327bca0e07 100644 --- a/drivers/iio/dac/ad5696-i2c.c +++ b/drivers/iio/dac/ad5696-i2c.c @@ -82,7 +82,7 @@ static const struct i2c_device_id ad5686_i2c_id[] = { {"ad5695r", ID_AD5695R}, {"ad5696", ID_AD5696}, {"ad5696r", ID_AD5696R}, - {} + { } }; MODULE_DEVICE_TABLE(i2c, ad5686_i2c_id); @@ -101,7 +101,7 @@ static const struct of_device_id ad5686_of_match[] = { { .compatible = "adi,ad5695r" }, { .compatible = "adi,ad5696" }, { .compatible = "adi,ad5696r" }, - {} + { } }; MODULE_DEVICE_TABLE(of, ad5686_of_match); diff --git a/drivers/iio/dac/ad5755.c b/drivers/iio/dac/ad5755.c index 05e80b6ae2cc..d0e5f35462b1 100644 --- a/drivers/iio/dac/ad5755.c +++ b/drivers/iio/dac/ad5755.c @@ -522,7 +522,7 @@ static const struct iio_chan_spec_ext_info ad5755_ext_info[] = { .write = ad5755_write_powerdown, .shared = IIO_SEPARATE, }, - { }, + { } }; #define AD5755_CHANNEL(_bits) { \ @@ -853,7 +853,7 @@ static const struct spi_device_id ad5755_id[] = { { "ad5757", (kernel_ulong_t)&ad5755_chip_info_tbl[ID_AD5757] }, { "ad5735", (kernel_ulong_t)&ad5755_chip_info_tbl[ID_AD5735] }, { "ad5737", (kernel_ulong_t)&ad5755_chip_info_tbl[ID_AD5737] }, - {} + { } }; MODULE_DEVICE_TABLE(spi, ad5755_id); diff --git a/drivers/iio/dac/ad5758.c b/drivers/iio/dac/ad5758.c index 98771e37a7b5..4ed4fda76ea9 100644 --- a/drivers/iio/dac/ad5758.c +++ b/drivers/iio/dac/ad5758.c @@ -878,7 +878,7 @@ static int ad5758_probe(struct spi_device *spi) static const struct spi_device_id ad5758_id[] = { { "ad5758", 0 }, - {} + { } }; MODULE_DEVICE_TABLE(spi, ad5758_id); diff --git a/drivers/iio/dac/ad5761.c b/drivers/iio/dac/ad5761.c index 0aa5ba7f4654..124571ba35d1 100644 --- a/drivers/iio/dac/ad5761.c +++ b/drivers/iio/dac/ad5761.c @@ -348,7 +348,7 @@ static const struct spi_device_id ad5761_id[] = { {"ad5721r", ID_AD5721R}, {"ad5761", ID_AD5761}, {"ad5761r", ID_AD5761R}, - {} + { } }; MODULE_DEVICE_TABLE(spi, ad5761_id); diff --git a/drivers/iio/dac/ad5766.c b/drivers/iio/dac/ad5766.c index f658ac8086aa..dc766c8fd370 100644 --- a/drivers/iio/dac/ad5766.c +++ b/drivers/iio/dac/ad5766.c @@ -437,7 +437,7 @@ static const struct iio_chan_spec_ext_info ad5766_ext_info[] = { IIO_ENUM("dither_scale", IIO_SEPARATE, &ad5766_dither_scale_enum), IIO_ENUM_AVAILABLE("dither_scale", IIO_SEPARATE, &ad5766_dither_scale_enum), - {} + { } }; #define AD576x_CHANNEL(_chan, _bits) { \ @@ -648,14 +648,14 @@ static int ad5766_probe(struct spi_device *spi) static const struct of_device_id ad5766_dt_match[] = { { .compatible = "adi,ad5766" }, { .compatible = "adi,ad5767" }, - {} + { } }; MODULE_DEVICE_TABLE(of, ad5766_dt_match); static const struct spi_device_id ad5766_spi_ids[] = { { "ad5766", ID_AD5766 }, { "ad5767", ID_AD5767 }, - {} + { } }; MODULE_DEVICE_TABLE(spi, ad5766_spi_ids); diff --git a/drivers/iio/dac/ad5770r.c b/drivers/iio/dac/ad5770r.c index 25cf11d0471b..6eb4027a44fb 100644 --- a/drivers/iio/dac/ad5770r.c +++ b/drivers/iio/dac/ad5770r.c @@ -637,13 +637,13 @@ static int ad5770r_probe(struct spi_device *spi) static const struct of_device_id ad5770r_of_id[] = { { .compatible = "adi,ad5770r", }, - {}, + { } }; MODULE_DEVICE_TABLE(of, ad5770r_of_id); static const struct spi_device_id ad5770r_id[] = { { "ad5770r", 0 }, - {}, + { } }; MODULE_DEVICE_TABLE(spi, ad5770r_id); diff --git a/drivers/iio/dac/ad5791.c b/drivers/iio/dac/ad5791.c index 07848be3f8d5..8214e524afdb 100644 --- a/drivers/iio/dac/ad5791.c +++ b/drivers/iio/dac/ad5791.c @@ -312,7 +312,7 @@ static const struct iio_chan_spec_ext_info ad5791_ext_info[] = { IIO_ENUM("powerdown_mode", IIO_SHARED_BY_TYPE, &ad5791_powerdown_mode_enum), IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &ad5791_powerdown_mode_enum), - { }, + { } }; #define AD5791_DEFINE_CHIP_INFO(_name, bits, _shift, _lin_comp) \ diff --git a/drivers/iio/dac/ad7293.c b/drivers/iio/dac/ad7293.c index d3f49b5337d2..99fa2d1f8299 100644 --- a/drivers/iio/dac/ad7293.c +++ b/drivers/iio/dac/ad7293.c @@ -859,13 +859,13 @@ static int ad7293_probe(struct spi_device *spi) static const struct spi_device_id ad7293_id[] = { { "ad7293", 0 }, - {} + { } }; MODULE_DEVICE_TABLE(spi, ad7293_id); static const struct of_device_id ad7293_of_match[] = { { .compatible = "adi,ad7293" }, - {} + { } }; MODULE_DEVICE_TABLE(of, ad7293_of_match); diff --git a/drivers/iio/dac/ad7303.c b/drivers/iio/dac/ad7303.c index bff6bf697d9c..a88cc639047d 100644 --- a/drivers/iio/dac/ad7303.c +++ b/drivers/iio/dac/ad7303.c @@ -173,7 +173,7 @@ static const struct iio_chan_spec_ext_info ad7303_ext_info[] = { .write = ad7303_write_dac_powerdown, .shared = IIO_SEPARATE, }, - { }, + { } }; #define AD7303_CHANNEL(chan) { \ @@ -264,13 +264,13 @@ static int ad7303_probe(struct spi_device *spi) static const struct of_device_id ad7303_spi_of_match[] = { { .compatible = "adi,ad7303", }, - { /* sentinel */ }, + { } }; MODULE_DEVICE_TABLE(of, ad7303_spi_of_match); static const struct spi_device_id ad7303_spi_ids[] = { { "ad7303", 0 }, - {} + { } }; MODULE_DEVICE_TABLE(spi, ad7303_spi_ids); diff --git a/drivers/iio/dac/ad8801.c b/drivers/iio/dac/ad8801.c index 8a362fae2eca..60e663af1cc1 100644 --- a/drivers/iio/dac/ad8801.c +++ b/drivers/iio/dac/ad8801.c @@ -153,7 +153,7 @@ static int ad8801_probe(struct spi_device *spi) static const struct spi_device_id ad8801_ids[] = { {"ad8801", ID_AD8801}, {"ad8803", ID_AD8803}, - {} + { } }; MODULE_DEVICE_TABLE(spi, ad8801_ids); diff --git a/drivers/iio/dac/ad9739a.c b/drivers/iio/dac/ad9739a.c index b6a65359b0b4..d77b46d83bd4 100644 --- a/drivers/iio/dac/ad9739a.c +++ b/drivers/iio/dac/ad9739a.c @@ -442,13 +442,13 @@ static int ad9739a_probe(struct spi_device *spi) static const struct of_device_id ad9739a_of_match[] = { { .compatible = "adi,ad9739a" }, - {} + { } }; MODULE_DEVICE_TABLE(of, ad9739a_of_match); static const struct spi_device_id ad9739a_id[] = { {"ad9739a"}, - {} + { } }; MODULE_DEVICE_TABLE(spi, ad9739a_id); diff --git a/drivers/iio/dac/adi-axi-dac.c b/drivers/iio/dac/adi-axi-dac.c index 8ed5ad1fa24c..538f1b9dc3b7 100644 --- a/drivers/iio/dac/adi-axi-dac.c +++ b/drivers/iio/dac/adi-axi-dac.c @@ -488,7 +488,7 @@ static const struct iio_chan_spec_ext_info axi_dac_ext_info[] = { IIO_BACKEND_EX_INFO("scale1", IIO_SEPARATE, AXI_DAC_SCALE_TONE_2), IIO_BACKEND_EX_INFO("phase0", IIO_SEPARATE, AXI_DAC_PHASE_TONE_1), IIO_BACKEND_EX_INFO("phase1", IIO_SEPARATE, AXI_DAC_PHASE_TONE_2), - {} + { } }; static int axi_dac_extend_chan(struct iio_backend *back, @@ -1015,7 +1015,7 @@ static const struct axi_dac_info dac_ad3552r = { static const struct of_device_id axi_dac_of_match[] = { { .compatible = "adi,axi-dac-9.1.b", .data = &dac_generic }, { .compatible = "adi,axi-ad3552r", .data = &dac_ad3552r }, - {} + { } }; MODULE_DEVICE_TABLE(of, axi_dac_of_match); diff --git a/drivers/iio/dac/dpot-dac.c b/drivers/iio/dac/dpot-dac.c index f36f10bfb6be..d1b8441051ae 100644 --- a/drivers/iio/dac/dpot-dac.c +++ b/drivers/iio/dac/dpot-dac.c @@ -237,7 +237,7 @@ static void dpot_dac_remove(struct platform_device *pdev) static const struct of_device_id dpot_dac_match[] = { { .compatible = "dpot-dac" }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(of, dpot_dac_match); diff --git a/drivers/iio/dac/ds4424.c b/drivers/iio/dac/ds4424.c index e89e4c054653..a26a99753418 100644 --- a/drivers/iio/dac/ds4424.c +++ b/drivers/iio/dac/ds4424.c @@ -301,7 +301,7 @@ MODULE_DEVICE_TABLE(i2c, ds4424_id); static const struct of_device_id ds4424_of_match[] = { { .compatible = "maxim,ds4422" }, { .compatible = "maxim,ds4424" }, - { }, + { } }; MODULE_DEVICE_TABLE(of, ds4424_of_match); diff --git a/drivers/iio/dac/lpc18xx_dac.c b/drivers/iio/dac/lpc18xx_dac.c index 2332b0c22691..aa1c73f8429d 100644 --- a/drivers/iio/dac/lpc18xx_dac.c +++ b/drivers/iio/dac/lpc18xx_dac.c @@ -179,7 +179,7 @@ static void lpc18xx_dac_remove(struct platform_device *pdev) static const struct of_device_id lpc18xx_dac_match[] = { { .compatible = "nxp,lpc1850-dac" }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(of, lpc18xx_dac_match); diff --git a/drivers/iio/dac/ltc1660.c b/drivers/iio/dac/ltc1660.c index 2758fc8a5ad5..6e80b49f4665 100644 --- a/drivers/iio/dac/ltc1660.c +++ b/drivers/iio/dac/ltc1660.c @@ -219,14 +219,14 @@ static void ltc1660_remove(struct spi_device *spi) static const struct of_device_id ltc1660_dt_ids[] = { { .compatible = "lltc,ltc1660", .data = (void *)ID_LTC1660 }, { .compatible = "lltc,ltc1665", .data = (void *)ID_LTC1665 }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(of, ltc1660_dt_ids); static const struct spi_device_id ltc1660_id[] = { {"ltc1660", ID_LTC1660}, {"ltc1665", ID_LTC1665}, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(spi, ltc1660_id); diff --git a/drivers/iio/dac/ltc2632.c b/drivers/iio/dac/ltc2632.c index 999348836d87..105f939f7e54 100644 --- a/drivers/iio/dac/ltc2632.c +++ b/drivers/iio/dac/ltc2632.c @@ -176,7 +176,7 @@ static const struct iio_chan_spec_ext_info ltc2632_ext_info[] = { .write = ltc2632_write_dac_powerdown, .shared = IIO_SEPARATE, }, - { }, + { } }; #define LTC2632_CHANNEL(_chan, _bits) { \ @@ -372,7 +372,7 @@ static const struct spi_device_id ltc2632_id[] = { { "ltc2636-h12", (kernel_ulong_t)<c2632_chip_info_tbl[ID_LTC2636H12] }, { "ltc2636-h10", (kernel_ulong_t)<c2632_chip_info_tbl[ID_LTC2636H10] }, { "ltc2636-h8", (kernel_ulong_t)<c2632_chip_info_tbl[ID_LTC2636H8] }, - {} + { } }; MODULE_DEVICE_TABLE(spi, ltc2632_id); @@ -432,7 +432,7 @@ static const struct of_device_id ltc2632_of_match[] = { .compatible = "lltc,ltc2636-h8", .data = <c2632_chip_info_tbl[ID_LTC2636H8] }, - {} + { } }; MODULE_DEVICE_TABLE(of, ltc2632_of_match); diff --git a/drivers/iio/dac/ltc2688.c b/drivers/iio/dac/ltc2688.c index bdc857c7fa6d..757b4831dc3e 100644 --- a/drivers/iio/dac/ltc2688.c +++ b/drivers/iio/dac/ltc2688.c @@ -608,7 +608,7 @@ static const struct iio_chan_spec_ext_info ltc2688_toggle_sym_ext_info[] = { ltc2688_reg_bool_get, ltc2688_reg_bool_set), LTC2688_CHAN_EXT_INFO("symbol", LTC2688_CMD_SW_TOGGLE, IIO_SEPARATE, ltc2688_reg_bool_get, ltc2688_reg_bool_set), - {} + { } }; static const struct iio_chan_spec_ext_info ltc2688_toggle_ext_info[] = { @@ -621,7 +621,7 @@ static const struct iio_chan_spec_ext_info ltc2688_toggle_ext_info[] = { ltc2688_dither_toggle_set), LTC2688_CHAN_EXT_INFO("powerdown", LTC2688_CMD_POWERDOWN, IIO_SEPARATE, ltc2688_reg_bool_get, ltc2688_reg_bool_set), - {} + { } }; static struct iio_chan_spec_ext_info ltc2688_dither_ext_info[] = { @@ -649,13 +649,13 @@ static struct iio_chan_spec_ext_info ltc2688_dither_ext_info[] = { ltc2688_dither_toggle_set), LTC2688_CHAN_EXT_INFO("powerdown", LTC2688_CMD_POWERDOWN, IIO_SEPARATE, ltc2688_reg_bool_get, ltc2688_reg_bool_set), - {} + { } }; static const struct iio_chan_spec_ext_info ltc2688_ext_info[] = { LTC2688_CHAN_EXT_INFO("powerdown", LTC2688_CMD_POWERDOWN, IIO_SEPARATE, ltc2688_reg_bool_get, ltc2688_reg_bool_set), - {} + { } }; #define LTC2688_CHANNEL(_chan) { \ @@ -991,13 +991,13 @@ static int ltc2688_probe(struct spi_device *spi) static const struct of_device_id ltc2688_of_id[] = { { .compatible = "adi,ltc2688" }, - {} + { } }; MODULE_DEVICE_TABLE(of, ltc2688_of_id); static const struct spi_device_id ltc2688_id[] = { { "ltc2688" }, - {} + { } }; MODULE_DEVICE_TABLE(spi, ltc2688_id); diff --git a/drivers/iio/dac/max5522.c b/drivers/iio/dac/max5522.c index 9f72155dcbc7..1b8fe6b8d26e 100644 --- a/drivers/iio/dac/max5522.c +++ b/drivers/iio/dac/max5522.c @@ -174,7 +174,7 @@ static int max5522_spi_probe(struct spi_device *spi) static const struct spi_device_id max5522_ids[] = { { "max5522", (kernel_ulong_t)&max5522_chip_info_tbl[ID_MAX5522] }, - {} + { } }; MODULE_DEVICE_TABLE(spi, max5522_ids); @@ -183,7 +183,7 @@ static const struct of_device_id max5522_of_match[] = { .compatible = "maxim,max5522", .data = &max5522_chip_info_tbl[ID_MAX5522], }, - {} + { } }; MODULE_DEVICE_TABLE(of, max5522_of_match); diff --git a/drivers/iio/dac/max5821.c b/drivers/iio/dac/max5821.c index b062a18be5e7..e7e29359f8fe 100644 --- a/drivers/iio/dac/max5821.c +++ b/drivers/iio/dac/max5821.c @@ -137,7 +137,7 @@ static const struct iio_chan_spec_ext_info max5821_ext_info[] = { }, IIO_ENUM("powerdown_mode", IIO_SEPARATE, &max5821_powerdown_mode_enum), IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &max5821_powerdown_mode_enum), - { }, + { } }; #define MAX5821_CHANNEL(chan) { \ diff --git a/drivers/iio/dac/mcp4725.c b/drivers/iio/dac/mcp4725.c index 1337fb02ccf5..62972494a229 100644 --- a/drivers/iio/dac/mcp4725.c +++ b/drivers/iio/dac/mcp4725.c @@ -241,7 +241,7 @@ static const struct iio_chan_spec_ext_info mcp4725_ext_info[] = { &mcp472x_powerdown_mode_enum[MCP4725]), IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &mcp472x_powerdown_mode_enum[MCP4725]), - { }, + { } }; static const struct iio_chan_spec_ext_info mcp4726_ext_info[] = { @@ -255,7 +255,7 @@ static const struct iio_chan_spec_ext_info mcp4726_ext_info[] = { &mcp472x_powerdown_mode_enum[MCP4726]), IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &mcp472x_powerdown_mode_enum[MCP4726]), - { }, + { } }; static const struct iio_chan_spec mcp472x_channel[] = { diff --git a/drivers/iio/dac/mcp4728.c b/drivers/iio/dac/mcp4728.c index 192175dc6419..4f30b99110b7 100644 --- a/drivers/iio/dac/mcp4728.c +++ b/drivers/iio/dac/mcp4728.c @@ -286,7 +286,7 @@ static const struct iio_chan_spec_ext_info mcp4728_ext_info[] = { IIO_ENUM("powerdown_mode", IIO_SEPARATE, &mcp4728_powerdown_mode_enum), IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &mcp4728_powerdown_mode_enum), - {}, + { } }; static const struct iio_chan_spec mcp4728_channels[MCP4728_N_CHANNELS] = { @@ -573,13 +573,13 @@ static int mcp4728_probe(struct i2c_client *client) static const struct i2c_device_id mcp4728_id[] = { { "mcp4728" }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, mcp4728_id); static const struct of_device_id mcp4728_of_match[] = { { .compatible = "microchip,mcp4728" }, - {} + { } }; MODULE_DEVICE_TABLE(of, mcp4728_of_match); diff --git a/drivers/iio/dac/mcp4821.c b/drivers/iio/dac/mcp4821.c index c1a59bbbba3c..748bdca9a964 100644 --- a/drivers/iio/dac/mcp4821.c +++ b/drivers/iio/dac/mcp4821.c @@ -206,7 +206,7 @@ static const struct of_device_id mcp4821_of_table[] = { MCP4821_COMPATIBLE("microchip,mcp4812", ID_MCP4812), MCP4821_COMPATIBLE("microchip,mcp4821", ID_MCP4821), MCP4821_COMPATIBLE("microchip,mcp4822", ID_MCP4822), - { /* Sentinel */ } + { } }; MODULE_DEVICE_TABLE(of, mcp4821_of_table); @@ -217,7 +217,7 @@ static const struct spi_device_id mcp4821_id_table[] = { { "mcp4812", (kernel_ulong_t)&mcp4821_chip_info_table[ID_MCP4812]}, { "mcp4821", (kernel_ulong_t)&mcp4821_chip_info_table[ID_MCP4821]}, { "mcp4822", (kernel_ulong_t)&mcp4821_chip_info_table[ID_MCP4822]}, - { /* Sentinel */ } + { } }; MODULE_DEVICE_TABLE(spi, mcp4821_id_table); diff --git a/drivers/iio/dac/mcp4922.c b/drivers/iio/dac/mcp4922.c index 26aa99059813..74f338afcab9 100644 --- a/drivers/iio/dac/mcp4922.c +++ b/drivers/iio/dac/mcp4922.c @@ -161,7 +161,7 @@ static const struct spi_device_id mcp4922_id[] = { {"mcp4912", ID_MCP4912}, {"mcp4921", ID_MCP4921}, {"mcp4922", ID_MCP4922}, - {} + { } }; MODULE_DEVICE_TABLE(spi, mcp4922_id); diff --git a/drivers/iio/dac/stm32-dac-core.c b/drivers/iio/dac/stm32-dac-core.c index 95ed5197d16f..8ef702917060 100644 --- a/drivers/iio/dac/stm32-dac-core.c +++ b/drivers/iio/dac/stm32-dac-core.c @@ -239,7 +239,7 @@ static const struct of_device_id stm32_dac_of_match[] = { .compatible = "st,stm32h7-dac-core", .data = (void *)&stm32h7_dac_cfg, }, - {}, + { } }; MODULE_DEVICE_TABLE(of, stm32_dac_of_match); diff --git a/drivers/iio/dac/stm32-dac.c b/drivers/iio/dac/stm32-dac.c index 3bfb368b3a23..344388338d9b 100644 --- a/drivers/iio/dac/stm32-dac.c +++ b/drivers/iio/dac/stm32-dac.c @@ -250,7 +250,7 @@ static const struct iio_chan_spec_ext_info stm32_dac_ext_info[] = { }, IIO_ENUM("powerdown_mode", IIO_SEPARATE, &stm32_dac_powerdown_mode_en), IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &stm32_dac_powerdown_mode_en), - {}, + { } }; #define STM32_DAC_CHANNEL(chan, name) { \ @@ -392,7 +392,7 @@ static DEFINE_SIMPLE_DEV_PM_OPS(stm32_dac_pm_ops, stm32_dac_suspend, static const struct of_device_id stm32_dac_of_match[] = { { .compatible = "st,stm32-dac", }, - {}, + { } }; MODULE_DEVICE_TABLE(of, stm32_dac_of_match); diff --git a/drivers/iio/dac/ti-dac082s085.c b/drivers/iio/dac/ti-dac082s085.c index 8e1590e3cc8b..715870c8a9c4 100644 --- a/drivers/iio/dac/ti-dac082s085.c +++ b/drivers/iio/dac/ti-dac082s085.c @@ -161,7 +161,7 @@ static const struct iio_chan_spec_ext_info ti_dac_ext_info[] = { }, IIO_ENUM("powerdown_mode", IIO_SHARED_BY_TYPE, &ti_dac_powerdown_mode), IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &ti_dac_powerdown_mode), - { }, + { } }; #define TI_DAC_CHANNEL(chan) { \ diff --git a/drivers/iio/dac/ti-dac5571.c b/drivers/iio/dac/ti-dac5571.c index c5162b72951a..bdc3f94aef98 100644 --- a/drivers/iio/dac/ti-dac5571.c +++ b/drivers/iio/dac/ti-dac5571.c @@ -216,7 +216,7 @@ static const struct iio_chan_spec_ext_info dac5571_ext_info[] = { }, IIO_ENUM("powerdown_mode", IIO_SEPARATE, &dac5571_powerdown_mode), IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &dac5571_powerdown_mode), - {}, + { } }; #define dac5571_CHANNEL(chan, name) { \ @@ -398,7 +398,7 @@ static const struct of_device_id dac5571_of_id[] = { {.compatible = "ti,dac5573", .data = &dac5571_spec[quad_8bit] }, {.compatible = "ti,dac6573", .data = &dac5571_spec[quad_10bit] }, {.compatible = "ti,dac7573", .data = &dac5571_spec[quad_12bit] }, - {} + { } }; MODULE_DEVICE_TABLE(of, dac5571_of_id); @@ -414,7 +414,7 @@ static const struct i2c_device_id dac5571_id[] = { {"dac5573", (kernel_ulong_t)&dac5571_spec[quad_8bit] }, {"dac6573", (kernel_ulong_t)&dac5571_spec[quad_10bit] }, {"dac7573", (kernel_ulong_t)&dac5571_spec[quad_12bit] }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, dac5571_id); diff --git a/drivers/iio/dac/ti-dac7311.c b/drivers/iio/dac/ti-dac7311.c index 6f4aa4794a0c..3d2ce61f0db6 100644 --- a/drivers/iio/dac/ti-dac7311.c +++ b/drivers/iio/dac/ti-dac7311.c @@ -147,7 +147,7 @@ static const struct iio_chan_spec_ext_info ti_dac_ext_info[] = { }, IIO_ENUM("powerdown_mode", IIO_SHARED_BY_TYPE, &ti_dac_powerdown_mode), IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &ti_dac_powerdown_mode), - { }, + { } }; #define TI_DAC_CHANNEL(chan) { \ diff --git a/drivers/iio/dac/ti-dac7612.c b/drivers/iio/dac/ti-dac7612.c index 8195815de26f..c308eca02b88 100644 --- a/drivers/iio/dac/ti-dac7612.c +++ b/drivers/iio/dac/ti-dac7612.c @@ -166,7 +166,7 @@ static int dac7612_probe(struct spi_device *spi) static const struct spi_device_id dac7612_id[] = { {"ti-dac7612"}, - {} + { } }; MODULE_DEVICE_TABLE(spi, dac7612_id); @@ -174,7 +174,7 @@ static const struct of_device_id dac7612_of_match[] = { { .compatible = "ti,dac7612" }, { .compatible = "ti,dac7612u" }, { .compatible = "ti,dac7612ub" }, - { }, + { } }; MODULE_DEVICE_TABLE(of, dac7612_of_match); diff --git a/drivers/iio/dac/vf610_dac.c b/drivers/iio/dac/vf610_dac.c index 82a078fa98ad..b30ff7bb4400 100644 --- a/drivers/iio/dac/vf610_dac.c +++ b/drivers/iio/dac/vf610_dac.c @@ -99,7 +99,7 @@ static const struct iio_enum vf610_conversion_mode = { static const struct iio_chan_spec_ext_info vf610_ext_info[] = { IIO_ENUM("conversion_mode", IIO_SHARED_BY_DIR, &vf610_conversion_mode), - {}, + { } }; #define VF610_DAC_CHAN(_chan_type) { \ @@ -166,7 +166,7 @@ static const struct iio_info vf610_dac_iio_info = { static const struct of_device_id vf610_dac_match[] = { { .compatible = "fsl,vf610-dac", }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(of, vf610_dac_match); diff --git a/drivers/iio/filter/admv8818.c b/drivers/iio/filter/admv8818.c index cc8ce0fe74e7..19f823446cda 100644 --- a/drivers/iio/filter/admv8818.c +++ b/drivers/iio/filter/admv8818.c @@ -602,7 +602,7 @@ static const struct iio_enum admv8818_mode_enum = { static const struct iio_chan_spec_ext_info admv8818_ext_info[] = { IIO_ENUM("filter_mode", IIO_SHARED_BY_ALL, &admv8818_mode_enum), IIO_ENUM_AVAILABLE("filter_mode", IIO_SHARED_BY_ALL, &admv8818_mode_enum), - { }, + { } }; #define ADMV8818_CHAN(_channel) { \ @@ -797,13 +797,13 @@ static int admv8818_probe(struct spi_device *spi) static const struct spi_device_id admv8818_id[] = { { "admv8818", 0 }, - {} + { } }; MODULE_DEVICE_TABLE(spi, admv8818_id); static const struct of_device_id admv8818_of_match[] = { { .compatible = "adi,admv8818" }, - {} + { } }; MODULE_DEVICE_TABLE(of, admv8818_of_match); diff --git a/drivers/iio/frequency/ad9523.c b/drivers/iio/frequency/ad9523.c index b1554ced7a26..63c485e9e44c 100644 --- a/drivers/iio/frequency/ad9523.c +++ b/drivers/iio/frequency/ad9523.c @@ -1032,7 +1032,7 @@ static int ad9523_probe(struct spi_device *spi) static const struct spi_device_id ad9523_id[] = { {"ad9523-1", 9523}, - {} + { } }; MODULE_DEVICE_TABLE(spi, ad9523_id); diff --git a/drivers/iio/frequency/adf4350.c b/drivers/iio/frequency/adf4350.c index 61828e61e275..47f1c7e9efa9 100644 --- a/drivers/iio/frequency/adf4350.c +++ b/drivers/iio/frequency/adf4350.c @@ -373,7 +373,7 @@ static const struct iio_chan_spec_ext_info adf4350_ext_info[] = { _ADF4350_EXT_INFO("frequency_resolution", ADF4350_FREQ_RESOLUTION), _ADF4350_EXT_INFO("refin_frequency", ADF4350_FREQ_REFIN), _ADF4350_EXT_INFO("powerdown", ADF4350_PWRDOWN), - { }, + { } }; static const struct iio_chan_spec adf4350_chan = { @@ -682,14 +682,14 @@ static int adf4350_probe(struct spi_device *spi) static const struct of_device_id adf4350_of_match[] = { { .compatible = "adi,adf4350", }, { .compatible = "adi,adf4351", }, - { /* sentinel */ }, + { } }; MODULE_DEVICE_TABLE(of, adf4350_of_match); static const struct spi_device_id adf4350_id[] = { {"adf4350", 4350}, {"adf4351", 4351}, - {} + { } }; MODULE_DEVICE_TABLE(spi, adf4350_id); diff --git a/drivers/iio/frequency/adf4371.c b/drivers/iio/frequency/adf4371.c index 9a84e81787b1..d6dc7827fb41 100644 --- a/drivers/iio/frequency/adf4371.c +++ b/drivers/iio/frequency/adf4371.c @@ -438,7 +438,7 @@ static const struct iio_chan_spec_ext_info adf4371_ext_info[] = { _ADF4371_EXT_INFO("frequency", ADF4371_FREQ), _ADF4371_EXT_INFO("powerdown", ADF4371_POWER_DOWN), _ADF4371_EXT_INFO("name", ADF4371_CHANNEL_NAME), - { }, + { } }; #define ADF4371_CHANNEL(index) { \ @@ -626,14 +626,14 @@ static int adf4371_probe(struct spi_device *spi) static const struct spi_device_id adf4371_id_table[] = { { "adf4371", (kernel_ulong_t)&adf4371_chip_info }, { "adf4372", (kernel_ulong_t)&adf4372_chip_info }, - {} + { } }; MODULE_DEVICE_TABLE(spi, adf4371_id_table); static const struct of_device_id adf4371_of_match[] = { { .compatible = "adi,adf4371", .data = &adf4371_chip_info }, { .compatible = "adi,adf4372", .data = &adf4372_chip_info}, - { }, + { } }; MODULE_DEVICE_TABLE(of, adf4371_of_match); diff --git a/drivers/iio/frequency/adf4377.c b/drivers/iio/frequency/adf4377.c index 45ceeb828d6b..08833b7035e4 100644 --- a/drivers/iio/frequency/adf4377.c +++ b/drivers/iio/frequency/adf4377.c @@ -985,14 +985,14 @@ static int adf4377_probe(struct spi_device *spi) static const struct spi_device_id adf4377_id[] = { { "adf4377", (kernel_ulong_t)&adf4377_chip_info }, { "adf4378", (kernel_ulong_t)&adf4378_chip_info }, - {} + { } }; MODULE_DEVICE_TABLE(spi, adf4377_id); static const struct of_device_id adf4377_of_match[] = { { .compatible = "adi,adf4377", .data = &adf4377_chip_info }, { .compatible = "adi,adf4378", .data = &adf4378_chip_info }, - {} + { } }; MODULE_DEVICE_TABLE(of, adf4377_of_match); diff --git a/drivers/iio/frequency/admv1013.c b/drivers/iio/frequency/admv1013.c index 8ef583680ad0..6f50884d7130 100644 --- a/drivers/iio/frequency/admv1013.c +++ b/drivers/iio/frequency/admv1013.c @@ -407,7 +407,7 @@ static int admv1013_freq_change(struct notifier_block *nb, unsigned long action, static const struct iio_chan_spec_ext_info admv1013_ext_info[] = { _ADMV1013_EXT_INFO("i_calibphase", IIO_SEPARATE, ADMV1013_RFMOD_I_CALIBPHASE), _ADMV1013_EXT_INFO("q_calibphase", IIO_SEPARATE, ADMV1013_RFMOD_Q_CALIBPHASE), - { }, + { } }; #define ADMV1013_CHAN_PHASE(_channel, _channel2, _admv1013_ext_info) { \ @@ -615,13 +615,13 @@ static int admv1013_probe(struct spi_device *spi) static const struct spi_device_id admv1013_id[] = { { "admv1013", 0 }, - {} + { } }; MODULE_DEVICE_TABLE(spi, admv1013_id); static const struct of_device_id admv1013_of_match[] = { { .compatible = "adi,admv1013" }, - {}, + { } }; MODULE_DEVICE_TABLE(of, admv1013_of_match); diff --git a/drivers/iio/frequency/admv1014.c b/drivers/iio/frequency/admv1014.c index 986b87a72577..7a8f92ec80a2 100644 --- a/drivers/iio/frequency/admv1014.c +++ b/drivers/iio/frequency/admv1014.c @@ -792,13 +792,13 @@ static int admv1014_probe(struct spi_device *spi) static const struct spi_device_id admv1014_id[] = { { "admv1014", 0 }, - {} + { } }; MODULE_DEVICE_TABLE(spi, admv1014_id); static const struct of_device_id admv1014_of_match[] = { { .compatible = "adi,admv1014" }, - {} + { } }; MODULE_DEVICE_TABLE(of, admv1014_of_match); diff --git a/drivers/iio/frequency/adrf6780.c b/drivers/iio/frequency/adrf6780.c index 57ee908fc747..a7a21f929970 100644 --- a/drivers/iio/frequency/adrf6780.c +++ b/drivers/iio/frequency/adrf6780.c @@ -487,13 +487,13 @@ static int adrf6780_probe(struct spi_device *spi) static const struct spi_device_id adrf6780_id[] = { { "adrf6780", 0 }, - {} + { } }; MODULE_DEVICE_TABLE(spi, adrf6780_id); static const struct of_device_id adrf6780_of_match[] = { { .compatible = "adi,adrf6780" }, - {} + { } }; MODULE_DEVICE_TABLE(of, adrf6780_of_match); diff --git a/drivers/iio/gyro/adis16080.c b/drivers/iio/gyro/adis16080.c index 14b3abf6dce9..178bba95a709 100644 --- a/drivers/iio/gyro/adis16080.c +++ b/drivers/iio/gyro/adis16080.c @@ -214,7 +214,7 @@ static int adis16080_probe(struct spi_device *spi) static const struct spi_device_id adis16080_ids[] = { { "adis16080", ID_ADIS16080 }, { "adis16100", ID_ADIS16100 }, - {}, + { } }; MODULE_DEVICE_TABLE(spi, adis16080_ids); diff --git a/drivers/iio/gyro/adis16260.c b/drivers/iio/gyro/adis16260.c index c151fbb59ffe..586e6cfa14a9 100644 --- a/drivers/iio/gyro/adis16260.c +++ b/drivers/iio/gyro/adis16260.c @@ -414,7 +414,7 @@ static const struct spi_device_id adis16260_id[] = { {"adis16250", ADIS16260}, {"adis16255", ADIS16260}, {"adis16251", ADIS16251}, - {} + { } }; MODULE_DEVICE_TABLE(spi, adis16260_id); diff --git a/drivers/iio/gyro/adxrs450.c b/drivers/iio/gyro/adxrs450.c index f84438e0c42c..5dadb88a4d92 100644 --- a/drivers/iio/gyro/adxrs450.c +++ b/drivers/iio/gyro/adxrs450.c @@ -446,7 +446,7 @@ static int adxrs450_probe(struct spi_device *spi) static const struct spi_device_id adxrs450_id[] = { {"adxrs450", ID_ADXRS450}, {"adxrs453", ID_ADXRS453}, - {} + { } }; MODULE_DEVICE_TABLE(spi, adxrs450_id); diff --git a/drivers/iio/gyro/bmg160_i2c.c b/drivers/iio/gyro/bmg160_i2c.c index e6caab49f98a..1fb8a7969c25 100644 --- a/drivers/iio/gyro/bmg160_i2c.c +++ b/drivers/iio/gyro/bmg160_i2c.c @@ -41,7 +41,7 @@ static void bmg160_i2c_remove(struct i2c_client *client) static const struct acpi_device_id bmg160_acpi_match[] = { {"BMG0160", 0}, - {}, + { } }; MODULE_DEVICE_TABLE(acpi, bmg160_acpi_match); @@ -50,7 +50,7 @@ static const struct i2c_device_id bmg160_i2c_id[] = { { "bmg160" }, { "bmi055_gyro" }, { "bmi088_gyro" }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, bmg160_i2c_id); diff --git a/drivers/iio/gyro/bmg160_spi.c b/drivers/iio/gyro/bmg160_spi.c index ac04b3b1b554..6aecc5eb8347 100644 --- a/drivers/iio/gyro/bmg160_spi.c +++ b/drivers/iio/gyro/bmg160_spi.c @@ -36,7 +36,7 @@ static const struct spi_device_id bmg160_spi_id[] = { {"bmg160", 0}, {"bmi055_gyro", 0}, {"bmi088_gyro", 0}, - {} + { } }; MODULE_DEVICE_TABLE(spi, bmg160_spi_id); diff --git a/drivers/iio/gyro/hid-sensor-gyro-3d.c b/drivers/iio/gyro/hid-sensor-gyro-3d.c index 54b6f6fbdcaa..c43990c518f7 100644 --- a/drivers/iio/gyro/hid-sensor-gyro-3d.c +++ b/drivers/iio/gyro/hid-sensor-gyro-3d.c @@ -375,7 +375,7 @@ static const struct platform_device_id hid_gyro_3d_ids[] = { /* Format: HID-SENSOR-usage_id_in_hex_lowercase */ .name = "HID-SENSOR-200076", }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(platform, hid_gyro_3d_ids); diff --git a/drivers/iio/gyro/mpu3050-core.c b/drivers/iio/gyro/mpu3050-core.c index d66224bed8e3..16553948c5c3 100644 --- a/drivers/iio/gyro/mpu3050-core.c +++ b/drivers/iio/gyro/mpu3050-core.c @@ -684,7 +684,7 @@ mpu3050_get_mount_matrix(const struct iio_dev *indio_dev, static const struct iio_chan_spec_ext_info mpu3050_ext_info[] = { IIO_MOUNT_MATRIX(IIO_SHARED_BY_TYPE, mpu3050_get_mount_matrix), - { }, + { } }; #define MPU3050_AXIS_CHANNEL(axis, index) \ diff --git a/drivers/iio/gyro/mpu3050-i2c.c b/drivers/iio/gyro/mpu3050-i2c.c index 29ecfa6fd633..8e284f47242c 100644 --- a/drivers/iio/gyro/mpu3050-i2c.c +++ b/drivers/iio/gyro/mpu3050-i2c.c @@ -95,7 +95,7 @@ static void mpu3050_i2c_remove(struct i2c_client *client) */ static const struct i2c_device_id mpu3050_i2c_id[] = { { "mpu3050" }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, mpu3050_i2c_id); @@ -103,7 +103,7 @@ static const struct of_device_id mpu3050_i2c_of_match[] = { { .compatible = "invensense,mpu3050", .data = "mpu3050" }, /* Deprecated vendor ID from the Input driver */ { .compatible = "invn,mpu3050", .data = "mpu3050" }, - { }, + { } }; MODULE_DEVICE_TABLE(of, mpu3050_i2c_of_match); diff --git a/drivers/iio/gyro/st_gyro_i2c.c b/drivers/iio/gyro/st_gyro_i2c.c index d4b11bdba666..aef5ec8f9dee 100644 --- a/drivers/iio/gyro/st_gyro_i2c.c +++ b/drivers/iio/gyro/st_gyro_i2c.c @@ -54,7 +54,7 @@ static const struct of_device_id st_gyro_of_match[] = { .compatible = "st,lsm9ds0-gyro", .data = LSM9DS0_GYRO_DEV_NAME, }, - {}, + { } }; MODULE_DEVICE_TABLE(of, st_gyro_of_match); @@ -102,7 +102,7 @@ static const struct i2c_device_id st_gyro_id_table[] = { { L3G4IS_GYRO_DEV_NAME }, { LSM330_GYRO_DEV_NAME }, { LSM9DS0_GYRO_DEV_NAME }, - {}, + { } }; MODULE_DEVICE_TABLE(i2c, st_gyro_id_table); diff --git a/drivers/iio/gyro/st_gyro_spi.c b/drivers/iio/gyro/st_gyro_spi.c index 811f712711f5..f645da157372 100644 --- a/drivers/iio/gyro/st_gyro_spi.c +++ b/drivers/iio/gyro/st_gyro_spi.c @@ -59,7 +59,7 @@ static const struct of_device_id st_gyro_of_match[] = { .compatible = "st,lsm9ds0-gyro", .data = LSM9DS0_GYRO_DEV_NAME, }, - {}, + { } }; MODULE_DEVICE_TABLE(of, st_gyro_of_match); @@ -107,7 +107,7 @@ static const struct spi_device_id st_gyro_id_table[] = { { L3G4IS_GYRO_DEV_NAME }, { LSM330_GYRO_DEV_NAME }, { LSM9DS0_GYRO_DEV_NAME }, - {}, + { } }; MODULE_DEVICE_TABLE(spi, st_gyro_id_table); diff --git a/drivers/iio/health/afe4403.c b/drivers/iio/health/afe4403.c index 13e1dd4dd62c..1582cfc03579 100644 --- a/drivers/iio/health/afe4403.c +++ b/drivers/iio/health/afe4403.c @@ -411,7 +411,7 @@ static const struct regmap_config afe4403_regmap_config = { static const struct of_device_id afe4403_of_match[] = { { .compatible = "ti,afe4403", }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(of, afe4403_of_match); @@ -574,7 +574,7 @@ static int afe4403_probe(struct spi_device *spi) static const struct spi_device_id afe4403_ids[] = { { "afe4403", 0 }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(spi, afe4403_ids); diff --git a/drivers/iio/health/afe4404.c b/drivers/iio/health/afe4404.c index d49e1572a439..99ff68aed27c 100644 --- a/drivers/iio/health/afe4404.c +++ b/drivers/iio/health/afe4404.c @@ -419,7 +419,7 @@ static const struct regmap_config afe4404_regmap_config = { static const struct of_device_id afe4404_of_match[] = { { .compatible = "ti,afe4404", }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(of, afe4404_of_match); @@ -581,7 +581,7 @@ static int afe4404_probe(struct i2c_client *client) static const struct i2c_device_id afe4404_ids[] = { { "afe4404" }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(i2c, afe4404_ids); diff --git a/drivers/iio/health/max30100.c b/drivers/iio/health/max30100.c index e08d143a707c..846664a4ee90 100644 --- a/drivers/iio/health/max30100.c +++ b/drivers/iio/health/max30100.c @@ -483,7 +483,7 @@ static void max30100_remove(struct i2c_client *client) static const struct i2c_device_id max30100_id[] = { { "max30100" }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, max30100_id); diff --git a/drivers/iio/health/max30102.c b/drivers/iio/health/max30102.c index dacc489f7293..f5f29d2fec57 100644 --- a/drivers/iio/health/max30102.c +++ b/drivers/iio/health/max30102.c @@ -615,7 +615,7 @@ static const struct i2c_device_id max30102_id[] = { { "max30101", max30105 }, { "max30102", max30102 }, { "max30105", max30105 }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, max30102_id); diff --git a/drivers/iio/humidity/am2315.c b/drivers/iio/humidity/am2315.c index 2323974b805c..f021c3e6d886 100644 --- a/drivers/iio/humidity/am2315.c +++ b/drivers/iio/humidity/am2315.c @@ -253,7 +253,7 @@ static int am2315_probe(struct i2c_client *client) static const struct i2c_device_id am2315_i2c_id[] = { { "am2315" }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, am2315_i2c_id); diff --git a/drivers/iio/humidity/hid-sensor-humidity.c b/drivers/iio/humidity/hid-sensor-humidity.c index a40e1eb6e98c..be2338d5f407 100644 --- a/drivers/iio/humidity/hid-sensor-humidity.c +++ b/drivers/iio/humidity/hid-sensor-humidity.c @@ -276,7 +276,7 @@ static const struct platform_device_id hid_humidity_ids[] = { /* Format: HID-SENSOR-usage_id_in_hex_lowercase */ .name = "HID-SENSOR-200032", }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(platform, hid_humidity_ids); diff --git a/drivers/iio/humidity/hts221_i2c.c b/drivers/iio/humidity/hts221_i2c.c index 87a8e3c8d277..cbaa7d1af6c4 100644 --- a/drivers/iio/humidity/hts221_i2c.c +++ b/drivers/iio/humidity/hts221_i2c.c @@ -42,19 +42,19 @@ static int hts221_i2c_probe(struct i2c_client *client) static const struct acpi_device_id hts221_acpi_match[] = { {"SMO9100", 0}, - { }, + { } }; MODULE_DEVICE_TABLE(acpi, hts221_acpi_match); static const struct of_device_id hts221_i2c_of_match[] = { { .compatible = "st,hts221", }, - {}, + { } }; MODULE_DEVICE_TABLE(of, hts221_i2c_of_match); static const struct i2c_device_id hts221_i2c_id_table[] = { { HTS221_DEV_NAME }, - {}, + { } }; MODULE_DEVICE_TABLE(i2c, hts221_i2c_id_table); diff --git a/drivers/iio/humidity/hts221_spi.c b/drivers/iio/humidity/hts221_spi.c index 00154b9d66b5..e6fef2acd523 100644 --- a/drivers/iio/humidity/hts221_spi.c +++ b/drivers/iio/humidity/hts221_spi.c @@ -42,13 +42,13 @@ static int hts221_spi_probe(struct spi_device *spi) static const struct of_device_id hts221_spi_of_match[] = { { .compatible = "st,hts221", }, - {}, + { } }; MODULE_DEVICE_TABLE(of, hts221_spi_of_match); static const struct spi_device_id hts221_spi_id_table[] = { { HTS221_DEV_NAME }, - {}, + { } }; MODULE_DEVICE_TABLE(spi, hts221_spi_id_table); diff --git a/drivers/iio/humidity/htu21.c b/drivers/iio/humidity/htu21.c index 6402e393edb8..7f1775bd26fd 100644 --- a/drivers/iio/humidity/htu21.c +++ b/drivers/iio/humidity/htu21.c @@ -232,14 +232,14 @@ static int htu21_probe(struct i2c_client *client) static const struct i2c_device_id htu21_id[] = { {"htu21", HTU21}, {"ms8607-humidity", MS8607}, - {} + { } }; MODULE_DEVICE_TABLE(i2c, htu21_id); static const struct of_device_id htu21_of_match[] = { { .compatible = "meas,htu21", }, { .compatible = "meas,ms8607-humidity", }, - { }, + { } }; MODULE_DEVICE_TABLE(of, htu21_of_match); diff --git a/drivers/iio/imu/adis16400.c b/drivers/iio/imu/adis16400.c index 3086dd536203..90ed3f9bb39c 100644 --- a/drivers/iio/imu/adis16400.c +++ b/drivers/iio/imu/adis16400.c @@ -1212,7 +1212,7 @@ static const struct spi_device_id adis16400_id[] = { {"adis16405", ADIS16400}, {"adis16445", ADIS16445}, {"adis16448", ADIS16448}, - {} + { } }; MODULE_DEVICE_TABLE(spi, adis16400_id); diff --git a/drivers/iio/imu/adis16460.c b/drivers/iio/imu/adis16460.c index ecf74046fde1..ba1887d36577 100644 --- a/drivers/iio/imu/adis16460.c +++ b/drivers/iio/imu/adis16460.c @@ -395,13 +395,13 @@ static int adis16460_probe(struct spi_device *spi) static const struct spi_device_id adis16460_ids[] = { { "adis16460", 0 }, - {} + { } }; MODULE_DEVICE_TABLE(spi, adis16460_ids); static const struct of_device_id adis16460_of_match[] = { { .compatible = "adi,adis16460" }, - {} + { } }; MODULE_DEVICE_TABLE(of, adis16460_of_match); diff --git a/drivers/iio/imu/adis16475.c b/drivers/iio/imu/adis16475.c index df8c6cd91169..924395b7e3b4 100644 --- a/drivers/iio/imu/adis16475.c +++ b/drivers/iio/imu/adis16475.c @@ -2058,7 +2058,7 @@ static const struct of_device_id adis16475_of_match[] = { .data = &adis16475_chip_info[ADIS16577_2] }, { .compatible = "adi,adis16577-3", .data = &adis16475_chip_info[ADIS16577_3] }, - { }, + { } }; MODULE_DEVICE_TABLE(of, adis16475_of_match); diff --git a/drivers/iio/imu/adis16480.c b/drivers/iio/imu/adis16480.c index 727e0a11eac1..543d5c4bfb11 100644 --- a/drivers/iio/imu/adis16480.c +++ b/drivers/iio/imu/adis16480.c @@ -1852,7 +1852,7 @@ static const struct of_device_id adis16480_of_match[] = { { .compatible = "adi,adis16547-1" }, { .compatible = "adi,adis16547-2" }, { .compatible = "adi,adis16547-3" }, - { }, + { } }; MODULE_DEVICE_TABLE(of, adis16480_of_match); diff --git a/drivers/iio/imu/bmi160/bmi160_i2c.c b/drivers/iio/imu/bmi160/bmi160_i2c.c index 214503fa4af5..9fa3a19a8977 100644 --- a/drivers/iio/imu/bmi160/bmi160_i2c.c +++ b/drivers/iio/imu/bmi160/bmi160_i2c.c @@ -39,7 +39,7 @@ static int bmi160_i2c_probe(struct i2c_client *client) static const struct i2c_device_id bmi160_i2c_id[] = { { "bmi120" }, { "bmi160" }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, bmi160_i2c_id); @@ -55,14 +55,14 @@ static const struct acpi_device_id bmi160_acpi_match[] = { {"10EC5280", 0}, {"BMI0120", 0}, {"BMI0160", 0}, - { }, + { } }; MODULE_DEVICE_TABLE(acpi, bmi160_acpi_match); static const struct of_device_id bmi160_of_match[] = { { .compatible = "bosch,bmi120" }, { .compatible = "bosch,bmi160" }, - { }, + { } }; MODULE_DEVICE_TABLE(of, bmi160_of_match); diff --git a/drivers/iio/imu/bmi160/bmi160_spi.c b/drivers/iio/imu/bmi160/bmi160_spi.c index 8fbaab22db81..ebb586904215 100644 --- a/drivers/iio/imu/bmi160/bmi160_spi.c +++ b/drivers/iio/imu/bmi160/bmi160_spi.c @@ -36,21 +36,21 @@ static int bmi160_spi_probe(struct spi_device *spi) static const struct spi_device_id bmi160_spi_id[] = { {"bmi120", 0}, {"bmi160", 0}, - {} + { } }; MODULE_DEVICE_TABLE(spi, bmi160_spi_id); static const struct acpi_device_id bmi160_acpi_match[] = { {"BMI0120", 0}, {"BMI0160", 0}, - { }, + { } }; MODULE_DEVICE_TABLE(acpi, bmi160_acpi_match); static const struct of_device_id bmi160_of_match[] = { { .compatible = "bosch,bmi120" }, { .compatible = "bosch,bmi160" }, - { }, + { } }; MODULE_DEVICE_TABLE(of, bmi160_of_match); diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_accel.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_accel.c index 1a67f5ce1800..e6cd9dcb0687 100644 --- a/drivers/iio/imu/inv_icm42600/inv_icm42600_accel.c +++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_accel.c @@ -157,7 +157,7 @@ static const struct iio_chan_spec_ext_info inv_icm42600_accel_ext_infos[] = { &inv_icm42600_accel_power_mode_enum), IIO_ENUM("power_mode", IIO_SHARED_BY_TYPE, &inv_icm42600_accel_power_mode_enum), - {}, + { } }; static const struct iio_chan_spec inv_icm42600_accel_channels[] = { diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_gyro.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_gyro.c index 70bac8ca28fa..b4d7ce1432a4 100644 --- a/drivers/iio/imu/inv_icm42600/inv_icm42600_gyro.c +++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_gyro.c @@ -57,7 +57,7 @@ enum inv_icm42600_gyro_scan { static const struct iio_chan_spec_ext_info inv_icm42600_gyro_ext_infos[] = { IIO_MOUNT_MATRIX(IIO_SHARED_BY_ALL, inv_icm42600_get_mount_matrix), - {}, + { } }; static const struct iio_chan_spec inv_icm42600_gyro_channels[] = { diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_i2c.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_i2c.c index a83a47a173d3..7e4d3ea68721 100644 --- a/drivers/iio/imu/inv_icm42600/inv_icm42600_i2c.c +++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_i2c.c @@ -109,7 +109,7 @@ static const struct of_device_id inv_icm42600_of_matches[] = { .compatible = "invensense,icm42631", .data = (void *)INV_CHIP_ICM42631, }, - {} + { } }; MODULE_DEVICE_TABLE(of, inv_icm42600_of_matches); diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_spi.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_spi.c index 53956cd5534c..13e2e7d38638 100644 --- a/drivers/iio/imu/inv_icm42600/inv_icm42600_spi.c +++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_spi.c @@ -106,7 +106,7 @@ static const struct of_device_id inv_icm42600_of_matches[] = { .compatible = "invensense,icm42631", .data = (void *)INV_CHIP_ICM42631, }, - {} + { } }; MODULE_DEVICE_TABLE(of, inv_icm42600_of_matches); diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c index 373e59f6d91a..a9bcf02e5b43 100644 --- a/drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c +++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c @@ -39,7 +39,7 @@ static const struct dmi_system_id inv_mpu_dev_list[] = { }, }, /* Add more matching tables here..*/ - {} + { } }; static int asus_acpi_get_sensor_info(struct acpi_device *adev, diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c index 91d77f94d204..8dc61812a8fc 100644 --- a/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c +++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c @@ -192,7 +192,7 @@ static const struct i2c_device_id inv_mpu_id[] = { {"iam20680", INV_IAM20680}, {"iam20680hp", INV_IAM20680HP}, {"iam20680ht", INV_IAM20680HT}, - {} + { } }; MODULE_DEVICE_TABLE(i2c, inv_mpu_id); @@ -276,7 +276,7 @@ MODULE_DEVICE_TABLE(of, inv_of_match); static const struct acpi_device_id inv_acpi_match[] = { {"INVN6500", INV_MPU6500}, - { }, + { } }; MODULE_DEVICE_TABLE(acpi, inv_acpi_match); diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_spi.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_spi.c index 20de6eb5cd35..1f4c62142b60 100644 --- a/drivers/iio/imu/inv_mpu6050/inv_mpu_spi.c +++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_spi.c @@ -83,7 +83,7 @@ static const struct spi_device_id inv_mpu_id[] = { {"iam20680", INV_IAM20680}, {"iam20680hp", INV_IAM20680HP}, {"iam20680ht", INV_IAM20680HT}, - {} + { } }; MODULE_DEVICE_TABLE(spi, inv_mpu_id); @@ -163,7 +163,7 @@ MODULE_DEVICE_TABLE(of, inv_of_match); static const struct acpi_device_id inv_acpi_match[] = { {"INVN6000", INV_MPU6000}, - { }, + { } }; MODULE_DEVICE_TABLE(acpi, inv_acpi_match); diff --git a/drivers/iio/imu/kmx61.c b/drivers/iio/imu/kmx61.c index e19c5d3137c6..2bdfb2619137 100644 --- a/drivers/iio/imu/kmx61.c +++ b/drivers/iio/imu/kmx61.c @@ -1487,7 +1487,7 @@ static const struct dev_pm_ops kmx61_pm_ops = { static const struct i2c_device_id kmx61_id[] = { { "kmx611021" }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, kmx61_id); diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i2c.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i2c.c index 25e1de89b6e4..7c933218036b 100644 --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i2c.c +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i2c.c @@ -138,13 +138,13 @@ static const struct of_device_id st_lsm6dsx_i2c_of_match[] = { .compatible = "st,asm330lhhxg1", .data = (void *)ST_ASM330LHHXG1_ID, }, - {}, + { } }; MODULE_DEVICE_TABLE(of, st_lsm6dsx_i2c_of_match); static const struct acpi_device_id st_lsm6dsx_i2c_acpi_match[] = { { "SMO8B30", ST_LSM6DS3TRC_ID, }, - {} + { } }; MODULE_DEVICE_TABLE(acpi, st_lsm6dsx_i2c_acpi_match); @@ -173,7 +173,7 @@ static const struct i2c_device_id st_lsm6dsx_i2c_id_table[] = { { ST_ISM330IS_DEV_NAME, ST_ISM330IS_ID }, { ST_ASM330LHB_DEV_NAME, ST_ASM330LHB_ID }, { ST_ASM330LHHXG1_DEV_NAME, ST_ASM330LHHXG1_ID }, - {}, + { } }; MODULE_DEVICE_TABLE(i2c, st_lsm6dsx_i2c_id_table); diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c index f968f32890d1..cb5c5d7e1f3d 100644 --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c @@ -17,7 +17,7 @@ static const struct i3c_device_id st_lsm6dsx_i3c_ids[] = { I3C_DEVICE(0x0104, 0x006C, (void *)ST_LSM6DSO_ID), I3C_DEVICE(0x0104, 0x006B, (void *)ST_LSM6DSR_ID), - { /* sentinel */ }, + { } }; MODULE_DEVICE_TABLE(i3c, st_lsm6dsx_i3c_ids); diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_spi.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_spi.c index 4b4b6d45524f..3389b15df0bc 100644 --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_spi.c +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_spi.c @@ -133,7 +133,7 @@ static const struct of_device_id st_lsm6dsx_spi_of_match[] = { .compatible = "st,asm330lhhxg1", .data = (void *)ST_ASM330LHHXG1_ID, }, - {}, + { } }; MODULE_DEVICE_TABLE(of, st_lsm6dsx_spi_of_match); @@ -162,7 +162,7 @@ static const struct spi_device_id st_lsm6dsx_spi_id_table[] = { { ST_ISM330IS_DEV_NAME, ST_ISM330IS_ID }, { ST_ASM330LHB_DEV_NAME, ST_ASM330LHB_ID }, { ST_ASM330LHHXG1_DEV_NAME, ST_ASM330LHHXG1_ID }, - {}, + { } }; MODULE_DEVICE_TABLE(spi, st_lsm6dsx_spi_id_table); diff --git a/drivers/iio/imu/st_lsm9ds0/st_lsm9ds0_i2c.c b/drivers/iio/imu/st_lsm9ds0/st_lsm9ds0_i2c.c index 8cc071463249..4232a9d800fc 100644 --- a/drivers/iio/imu/st_lsm9ds0/st_lsm9ds0_i2c.c +++ b/drivers/iio/imu/st_lsm9ds0/st_lsm9ds0_i2c.c @@ -28,20 +28,20 @@ static const struct of_device_id st_lsm9ds0_of_match[] = { .compatible = "st,lsm9ds0-imu", .data = LSM9DS0_IMU_DEV_NAME, }, - {} + { } }; MODULE_DEVICE_TABLE(of, st_lsm9ds0_of_match); static const struct i2c_device_id st_lsm9ds0_id_table[] = { { LSM303D_IMU_DEV_NAME }, { LSM9DS0_IMU_DEV_NAME }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, st_lsm9ds0_id_table); static const struct acpi_device_id st_lsm9ds0_acpi_match[] = { {"ACCL0001", (kernel_ulong_t)LSM303D_IMU_DEV_NAME}, - {} + { } }; MODULE_DEVICE_TABLE(acpi, st_lsm9ds0_acpi_match); diff --git a/drivers/iio/imu/st_lsm9ds0/st_lsm9ds0_spi.c b/drivers/iio/imu/st_lsm9ds0/st_lsm9ds0_spi.c index 806e55f75f65..acea8a0757d7 100644 --- a/drivers/iio/imu/st_lsm9ds0/st_lsm9ds0_spi.c +++ b/drivers/iio/imu/st_lsm9ds0/st_lsm9ds0_spi.c @@ -28,14 +28,14 @@ static const struct of_device_id st_lsm9ds0_of_match[] = { .compatible = "st,lsm9ds0-imu", .data = LSM9DS0_IMU_DEV_NAME, }, - {} + { } }; MODULE_DEVICE_TABLE(of, st_lsm9ds0_of_match); static const struct spi_device_id st_lsm9ds0_id_table[] = { { LSM303D_IMU_DEV_NAME }, { LSM9DS0_IMU_DEV_NAME }, - {} + { } }; MODULE_DEVICE_TABLE(spi, st_lsm9ds0_id_table); diff --git a/drivers/iio/light/acpi-als.c b/drivers/iio/light/acpi-als.c index 2d91caf24dd0..032e6cae8b80 100644 --- a/drivers/iio/light/acpi-als.c +++ b/drivers/iio/light/acpi-als.c @@ -230,7 +230,7 @@ static int acpi_als_add(struct acpi_device *device) static const struct acpi_device_id acpi_als_device_ids[] = { {"ACPI0008", 0}, - {}, + { } }; MODULE_DEVICE_TABLE(acpi, acpi_als_device_ids); diff --git a/drivers/iio/light/adux1020.c b/drivers/iio/light/adux1020.c index 9240983a6cc4..e321f89c5340 100644 --- a/drivers/iio/light/adux1020.c +++ b/drivers/iio/light/adux1020.c @@ -820,7 +820,7 @@ static int adux1020_probe(struct i2c_client *client) static const struct i2c_device_id adux1020_id[] = { { "adux1020" }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, adux1020_id); diff --git a/drivers/iio/light/al3000a.c b/drivers/iio/light/al3000a.c index 6d5115b2a06c..6f301c067045 100644 --- a/drivers/iio/light/al3000a.c +++ b/drivers/iio/light/al3000a.c @@ -190,7 +190,7 @@ MODULE_DEVICE_TABLE(i2c, al3000a_id); static const struct of_device_id al3000a_of_match[] = { { .compatible = "dynaimage,al3000a" }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(of, al3000a_of_match); diff --git a/drivers/iio/light/al3010.c b/drivers/iio/light/al3010.c index 8e703c81f954..0932fa2b49fa 100644 --- a/drivers/iio/light/al3010.c +++ b/drivers/iio/light/al3010.c @@ -219,13 +219,13 @@ static DEFINE_SIMPLE_DEV_PM_OPS(al3010_pm_ops, al3010_suspend, al3010_resume); static const struct i2c_device_id al3010_id[] = { {"al3010", }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, al3010_id); static const struct of_device_id al3010_of_match[] = { { .compatible = "dynaimage,al3010", }, - {}, + { } }; MODULE_DEVICE_TABLE(of, al3010_of_match); diff --git a/drivers/iio/light/al3320a.c b/drivers/iio/light/al3320a.c index 31f5e033c386..63f5a85912fc 100644 --- a/drivers/iio/light/al3320a.c +++ b/drivers/iio/light/al3320a.c @@ -247,19 +247,19 @@ static DEFINE_SIMPLE_DEV_PM_OPS(al3320a_pm_ops, al3320a_suspend, static const struct i2c_device_id al3320a_id[] = { { "al3320a" }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, al3320a_id); static const struct of_device_id al3320a_of_match[] = { { .compatible = "dynaimage,al3320a", }, - {}, + { } }; MODULE_DEVICE_TABLE(of, al3320a_of_match); static const struct acpi_device_id al3320a_acpi_match[] = { {"CALS0001"}, - { }, + { } }; MODULE_DEVICE_TABLE(acpi, al3320a_acpi_match); diff --git a/drivers/iio/light/apds9960.c b/drivers/iio/light/apds9960.c index d30441d33703..0003a29bf264 100644 --- a/drivers/iio/light/apds9960.c +++ b/drivers/iio/light/apds9960.c @@ -1157,7 +1157,7 @@ static const struct dev_pm_ops apds9960_pm_ops = { static const struct i2c_device_id apds9960_id[] = { { "apds9960" }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, apds9960_id); diff --git a/drivers/iio/light/bh1780.c b/drivers/iio/light/bh1780.c index 475f44954f61..c7c877d2fe67 100644 --- a/drivers/iio/light/bh1780.c +++ b/drivers/iio/light/bh1780.c @@ -264,7 +264,7 @@ MODULE_DEVICE_TABLE(i2c, bh1780_id); static const struct of_device_id of_bh1780_match[] = { { .compatible = "rohm,bh1780gli", }, - {}, + { } }; MODULE_DEVICE_TABLE(of, of_bh1780_match); diff --git a/drivers/iio/light/cm3232.c b/drivers/iio/light/cm3232.c index 5b00ad2a014e..e864d2ef036e 100644 --- a/drivers/iio/light/cm3232.c +++ b/drivers/iio/light/cm3232.c @@ -369,7 +369,7 @@ static void cm3232_remove(struct i2c_client *client) static const struct i2c_device_id cm3232_id[] = { { "cm3232" }, - {} + { } }; static int cm3232_suspend(struct device *dev) @@ -406,7 +406,7 @@ MODULE_DEVICE_TABLE(i2c, cm3232_id); static const struct of_device_id cm3232_of_match[] = { {.compatible = "capella,cm3232"}, - {} + { } }; MODULE_DEVICE_TABLE(of, cm3232_of_match); diff --git a/drivers/iio/light/cm3323.c b/drivers/iio/light/cm3323.c index 79a64e2ff812..79ad6e2209ca 100644 --- a/drivers/iio/light/cm3323.c +++ b/drivers/iio/light/cm3323.c @@ -251,13 +251,13 @@ static int cm3323_probe(struct i2c_client *client) static const struct i2c_device_id cm3323_id[] = { { "cm3323" }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, cm3323_id); static const struct of_device_id cm3323_of_match[] = { { .compatible = "capella,cm3323", }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(of, cm3323_of_match); diff --git a/drivers/iio/light/cm3605.c b/drivers/iio/light/cm3605.c index 675c0fd44db4..0c17378e27d1 100644 --- a/drivers/iio/light/cm3605.c +++ b/drivers/iio/light/cm3605.c @@ -307,7 +307,7 @@ static DEFINE_SIMPLE_DEV_PM_OPS(cm3605_dev_pm_ops, cm3605_pm_suspend, static const struct of_device_id cm3605_of_match[] = { {.compatible = "capella,cm3605"}, - { }, + { } }; MODULE_DEVICE_TABLE(of, cm3605_of_match); diff --git a/drivers/iio/light/cros_ec_light_prox.c b/drivers/iio/light/cros_ec_light_prox.c index 19e529c84e95..815806ceb5c8 100644 --- a/drivers/iio/light/cros_ec_light_prox.c +++ b/drivers/iio/light/cros_ec_light_prox.c @@ -249,7 +249,7 @@ static const struct platform_device_id cros_ec_light_prox_ids[] = { { .name = "cros-ec-light", }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(platform, cros_ec_light_prox_ids); diff --git a/drivers/iio/light/gp2ap002.c b/drivers/iio/light/gp2ap002.c index d56ee217fe53..42859e5b1089 100644 --- a/drivers/iio/light/gp2ap002.c +++ b/drivers/iio/light/gp2ap002.c @@ -700,7 +700,7 @@ MODULE_DEVICE_TABLE(i2c, gp2ap002_id_table); static const struct of_device_id gp2ap002_of_match[] = { { .compatible = "sharp,gp2ap002a00f" }, { .compatible = "sharp,gp2ap002s00f" }, - { }, + { } }; MODULE_DEVICE_TABLE(of, gp2ap002_of_match); diff --git a/drivers/iio/light/hid-sensor-als.c b/drivers/iio/light/hid-sensor-als.c index aa4c72d4849e..830e5ae7f34a 100644 --- a/drivers/iio/light/hid-sensor-als.c +++ b/drivers/iio/light/hid-sensor-als.c @@ -456,7 +456,7 @@ static const struct platform_device_id hid_als_ids[] = { /* Format: HID-SENSOR-custom_sensor_tag-usage_id_in_hex_lowercase */ .name = "HID-SENSOR-LISS-0041", }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(platform, hid_als_ids); diff --git a/drivers/iio/light/hid-sensor-prox.c b/drivers/iio/light/hid-sensor-prox.c index 3a7b48803d50..6143e45a1e71 100644 --- a/drivers/iio/light/hid-sensor-prox.c +++ b/drivers/iio/light/hid-sensor-prox.c @@ -359,7 +359,7 @@ static const struct platform_device_id hid_prox_ids[] = { /* Format: HID-SENSOR-tag-usage_id_in_hex_lowercase */ .name = "HID-SENSOR-LISS-0226", }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(platform, hid_prox_ids); diff --git a/drivers/iio/light/isl29018.c b/drivers/iio/light/isl29018.c index 201eae1c4589..1b4c18423048 100644 --- a/drivers/iio/light/isl29018.c +++ b/drivers/iio/light/isl29018.c @@ -824,7 +824,7 @@ static const struct acpi_device_id isl29018_acpi_match[] = { {"ISL29018", isl29018}, {"ISL29023", isl29023}, {"ISL29035", isl29035}, - {} + { } }; MODULE_DEVICE_TABLE(acpi, isl29018_acpi_match); @@ -832,7 +832,7 @@ static const struct i2c_device_id isl29018_id[] = { {"isl29018", isl29018}, {"isl29023", isl29023}, {"isl29035", isl29035}, - {} + { } }; MODULE_DEVICE_TABLE(i2c, isl29018_id); diff --git a/drivers/iio/light/isl29028.c b/drivers/iio/light/isl29028.c index 95bfb3ffa519..609ebf0f7313 100644 --- a/drivers/iio/light/isl29028.c +++ b/drivers/iio/light/isl29028.c @@ -680,7 +680,7 @@ static DEFINE_RUNTIME_DEV_PM_OPS(isl29028_pm_ops, isl29028_suspend, static const struct i2c_device_id isl29028_id[] = { { "isl29028" }, { "isl29030" }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, isl29028_id); @@ -688,7 +688,7 @@ static const struct of_device_id isl29028_of_match[] = { { .compatible = "isl,isl29028", }, /* for backward compat., don't use */ { .compatible = "isil,isl29028", }, { .compatible = "isil,isl29030", }, - { }, + { } }; MODULE_DEVICE_TABLE(of, isl29028_of_match); diff --git a/drivers/iio/light/jsa1212.c b/drivers/iio/light/jsa1212.c index e7ba934c8e69..fa4677c28931 100644 --- a/drivers/iio/light/jsa1212.c +++ b/drivers/iio/light/jsa1212.c @@ -424,7 +424,7 @@ static DEFINE_SIMPLE_DEV_PM_OPS(jsa1212_pm_ops, jsa1212_suspend, static const struct acpi_device_id jsa1212_acpi_match[] = { {"JSA1212", 0}, - { }, + { } }; MODULE_DEVICE_TABLE(acpi, jsa1212_acpi_match); diff --git a/drivers/iio/light/ltr390.c b/drivers/iio/light/ltr390.c index df664f360903..ee59bbb8aa09 100644 --- a/drivers/iio/light/ltr390.c +++ b/drivers/iio/light/ltr390.c @@ -717,13 +717,13 @@ static DEFINE_SIMPLE_DEV_PM_OPS(ltr390_pm_ops, ltr390_suspend, ltr390_resume); static const struct i2c_device_id ltr390_id[] = { { "ltr390" }, - { /* Sentinel */ } + { } }; MODULE_DEVICE_TABLE(i2c, ltr390_id); static const struct of_device_id ltr390_of_table[] = { { .compatible = "liteon,ltr390" }, - { /* Sentinel */ } + { } }; MODULE_DEVICE_TABLE(of, ltr390_of_table); diff --git a/drivers/iio/light/ltr501.c b/drivers/iio/light/ltr501.c index 23fd0713c64b..8d8051cf6927 100644 --- a/drivers/iio/light/ltr501.c +++ b/drivers/iio/light/ltr501.c @@ -541,7 +541,7 @@ static const struct iio_chan_spec_ext_info ltr501_ext_info[] = { .shared = IIO_SEPARATE, .read = ltr501_read_near_level, }, - { /* sentinel */ } + { } }; static const struct iio_event_spec ltr501_als_event_spec[] = { @@ -1602,7 +1602,7 @@ static const struct acpi_device_id ltr_acpi_match[] = { { "LTER0301", ltr301 }, /* https://www.catalog.update.microsoft.com/Search.aspx?q=lter0303 */ { "LTER0303", ltr303 }, - { }, + { } }; MODULE_DEVICE_TABLE(acpi, ltr_acpi_match); @@ -1620,7 +1620,7 @@ static const struct of_device_id ltr501_of_match[] = { { .compatible = "liteon,ltr559", }, { .compatible = "liteon,ltr301", }, { .compatible = "liteon,ltr303", }, - {} + { } }; MODULE_DEVICE_TABLE(of, ltr501_of_match); diff --git a/drivers/iio/light/ltrf216a.c b/drivers/iio/light/ltrf216a.c index dbec1e7cfeb8..61f57a82b872 100644 --- a/drivers/iio/light/ltrf216a.c +++ b/drivers/iio/light/ltrf216a.c @@ -554,7 +554,7 @@ static const struct ltr_chip_info ltrf216a_chip_info = { static const struct i2c_device_id ltrf216a_id[] = { { "ltr308", .driver_data = (kernel_ulong_t)<r308_chip_info }, { "ltrf216a", .driver_data = (kernel_ulong_t)<rf216a_chip_info }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, ltrf216a_id); @@ -563,7 +563,7 @@ static const struct of_device_id ltrf216a_of_match[] = { { .compatible = "liteon,ltrf216a", .data = <rf216a_chip_info }, /* For Valve's Steamdeck device, an ACPI platform using PRP0001 */ { .compatible = "ltr,ltrf216a", .data = <rf216a_chip_info }, - {} + { } }; MODULE_DEVICE_TABLE(of, ltrf216a_of_match); diff --git a/drivers/iio/light/opt4001.c b/drivers/iio/light/opt4001.c index 6cf60151b3d8..ba4eb82d9bc2 100644 --- a/drivers/iio/light/opt4001.c +++ b/drivers/iio/light/opt4001.c @@ -448,7 +448,7 @@ MODULE_DEVICE_TABLE(i2c, opt4001_id); static const struct of_device_id opt4001_of_match[] = { { .compatible = "ti,opt4001-sot-5x3", .data = &opt4001_sot_5x3_info}, { .compatible = "ti,opt4001-picostar", .data = &opt4001_picostar_info}, - {} + { } }; MODULE_DEVICE_TABLE(of, opt4001_of_match); diff --git a/drivers/iio/light/pa12203001.c b/drivers/iio/light/pa12203001.c index b920bf82c102..8885852bef22 100644 --- a/drivers/iio/light/pa12203001.c +++ b/drivers/iio/light/pa12203001.c @@ -456,14 +456,14 @@ static const struct dev_pm_ops pa12203001_pm_ops = { static const struct acpi_device_id pa12203001_acpi_match[] = { { "TXCPA122", 0 }, - {} + { } }; MODULE_DEVICE_TABLE(acpi, pa12203001_acpi_match); static const struct i2c_device_id pa12203001_id[] = { { "txcpa122" }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, pa12203001_id); diff --git a/drivers/iio/light/st_uvis25_i2c.c b/drivers/iio/light/st_uvis25_i2c.c index f54282476d11..5d9bb4d9be63 100644 --- a/drivers/iio/light/st_uvis25_i2c.c +++ b/drivers/iio/light/st_uvis25_i2c.c @@ -41,13 +41,13 @@ static int st_uvis25_i2c_probe(struct i2c_client *client) static const struct of_device_id st_uvis25_i2c_of_match[] = { { .compatible = "st,uvis25", }, - {}, + { } }; MODULE_DEVICE_TABLE(of, st_uvis25_i2c_of_match); static const struct i2c_device_id st_uvis25_i2c_id_table[] = { { ST_UVIS25_DEV_NAME }, - {}, + { } }; MODULE_DEVICE_TABLE(i2c, st_uvis25_i2c_id_table); diff --git a/drivers/iio/light/st_uvis25_spi.c b/drivers/iio/light/st_uvis25_spi.c index 18edc6a5a4a4..a5aad74ce73e 100644 --- a/drivers/iio/light/st_uvis25_spi.c +++ b/drivers/iio/light/st_uvis25_spi.c @@ -42,13 +42,13 @@ static int st_uvis25_spi_probe(struct spi_device *spi) static const struct of_device_id st_uvis25_spi_of_match[] = { { .compatible = "st,uvis25", }, - {}, + { } }; MODULE_DEVICE_TABLE(of, st_uvis25_spi_of_match); static const struct spi_device_id st_uvis25_spi_id_table[] = { { ST_UVIS25_DEV_NAME }, - {}, + { } }; MODULE_DEVICE_TABLE(spi, st_uvis25_spi_id_table); diff --git a/drivers/iio/light/stk3310.c b/drivers/iio/light/stk3310.c index b81cc44db43c..deada9ba4748 100644 --- a/drivers/iio/light/stk3310.c +++ b/drivers/iio/light/stk3310.c @@ -165,7 +165,7 @@ static const struct iio_chan_spec_ext_info stk3310_ext_info[] = { .shared = IIO_SEPARATE, .read = stk3310_read_near_level, }, - { /* sentinel */ } + { } }; static const struct iio_chan_spec stk3310_channels[] = { @@ -703,7 +703,7 @@ static const struct i2c_device_id stk3310_i2c_id[] = { { "STK3310" }, { "STK3311" }, { "STK3335" }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, stk3310_i2c_id); @@ -711,7 +711,7 @@ static const struct acpi_device_id stk3310_acpi_id[] = { {"STK3013", 0}, {"STK3310", 0}, {"STK3311", 0}, - {} + { } }; MODULE_DEVICE_TABLE(acpi, stk3310_acpi_id); @@ -721,7 +721,7 @@ static const struct of_device_id stk3310_of_match[] = { { .compatible = "sensortek,stk3310", }, { .compatible = "sensortek,stk3311", }, { .compatible = "sensortek,stk3335", }, - {} + { } }; MODULE_DEVICE_TABLE(of, stk3310_of_match); diff --git a/drivers/iio/light/tsl2563.c b/drivers/iio/light/tsl2563.c index f1fe7640fce6..f2af1cd7c2d1 100644 --- a/drivers/iio/light/tsl2563.c +++ b/drivers/iio/light/tsl2563.c @@ -843,7 +843,7 @@ static const struct i2c_device_id tsl2563_id[] = { { "tsl2561", 1 }, { "tsl2562", 2 }, { "tsl2563", 3 }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, tsl2563_id); @@ -852,7 +852,7 @@ static const struct of_device_id tsl2563_of_match[] = { { .compatible = "amstaos,tsl2561" }, { .compatible = "amstaos,tsl2562" }, { .compatible = "amstaos,tsl2563" }, - {} + { } }; MODULE_DEVICE_TABLE(of, tsl2563_of_match); diff --git a/drivers/iio/light/tsl2583.c b/drivers/iio/light/tsl2583.c index 02ad11611b9c..fc3b0c4226be 100644 --- a/drivers/iio/light/tsl2583.c +++ b/drivers/iio/light/tsl2583.c @@ -922,7 +922,7 @@ static const struct i2c_device_id tsl2583_idtable[] = { { "tsl2580", 0 }, { "tsl2581", 1 }, { "tsl2583", 2 }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, tsl2583_idtable); @@ -930,7 +930,7 @@ static const struct of_device_id tsl2583_of_match[] = { { .compatible = "amstaos,tsl2580", }, { .compatible = "amstaos,tsl2581", }, { .compatible = "amstaos,tsl2583", }, - { }, + { } }; MODULE_DEVICE_TABLE(of, tsl2583_of_match); diff --git a/drivers/iio/light/tsl2591.c b/drivers/iio/light/tsl2591.c index b81ca6f73f92..08476f193a44 100644 --- a/drivers/iio/light/tsl2591.c +++ b/drivers/iio/light/tsl2591.c @@ -1204,7 +1204,7 @@ static int tsl2591_probe(struct i2c_client *client) static const struct of_device_id tsl2591_of_match[] = { { .compatible = "amstaos,tsl2591"}, - {} + { } }; MODULE_DEVICE_TABLE(of, tsl2591_of_match); diff --git a/drivers/iio/light/tsl2772.c b/drivers/iio/light/tsl2772.c index 349afdcbe30d..0b171106441a 100644 --- a/drivers/iio/light/tsl2772.c +++ b/drivers/iio/light/tsl2772.c @@ -1899,7 +1899,7 @@ static const struct i2c_device_id tsl2772_idtable[] = { { "tsl2772", tsl2772 }, { "tmd2772", tmd2772 }, { "apds9930", apds9930 }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, tsl2772_idtable); @@ -1916,7 +1916,7 @@ static const struct of_device_id tsl2772_of_match[] = { { .compatible = "amstaos,tsl2772" }, { .compatible = "amstaos,tmd2772" }, { .compatible = "avago,apds9930" }, - {} + { } }; MODULE_DEVICE_TABLE(of, tsl2772_of_match); diff --git a/drivers/iio/light/us5182d.c b/drivers/iio/light/us5182d.c index c83114aed6b2..61a0957317a1 100644 --- a/drivers/iio/light/us5182d.c +++ b/drivers/iio/light/us5182d.c @@ -949,21 +949,21 @@ static const struct dev_pm_ops us5182d_pm_ops = { static const struct acpi_device_id us5182d_acpi_match[] = { { "USD5182", 0 }, - {} + { } }; MODULE_DEVICE_TABLE(acpi, us5182d_acpi_match); static const struct i2c_device_id us5182d_id[] = { { "usd5182" }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, us5182d_id); static const struct of_device_id us5182d_of_match[] = { { .compatible = "upisemi,usd5182" }, - {} + { } }; MODULE_DEVICE_TABLE(of, us5182d_of_match); diff --git a/drivers/iio/light/vcnl4000.c b/drivers/iio/light/vcnl4000.c index d7489bee2dff..90e7d4421abf 100644 --- a/drivers/iio/light/vcnl4000.c +++ b/drivers/iio/light/vcnl4000.c @@ -1745,7 +1745,7 @@ static const struct iio_chan_spec_ext_info vcnl4000_ext_info[] = { .shared = IIO_SEPARATE, .read = vcnl4000_read_near_level, }, - { /* sentinel */ } + { } }; static const struct iio_event_spec vcnl4000_event_spec[] = { @@ -2068,7 +2068,7 @@ static const struct of_device_id vcnl_4000_of_match[] = { .compatible = "vishay,vcnl4200", .data = (void *)VCNL4200, }, - {}, + { } }; MODULE_DEVICE_TABLE(of, vcnl_4000_of_match); diff --git a/drivers/iio/light/veml6040.c b/drivers/iio/light/veml6040.c index 216e271001a8..71a594b2ec85 100644 --- a/drivers/iio/light/veml6040.c +++ b/drivers/iio/light/veml6040.c @@ -256,13 +256,13 @@ static int veml6040_probe(struct i2c_client *client) static const struct i2c_device_id veml6040_id_table[] = { {"veml6040"}, - {} + { } }; MODULE_DEVICE_TABLE(i2c, veml6040_id_table); static const struct of_device_id veml6040_of_match[] = { {.compatible = "vishay,veml6040"}, - {} + { } }; MODULE_DEVICE_TABLE(of, veml6040_of_match); diff --git a/drivers/iio/light/veml6075.c b/drivers/iio/light/veml6075.c index 859891e8f115..edbb43407054 100644 --- a/drivers/iio/light/veml6075.c +++ b/drivers/iio/light/veml6075.c @@ -458,7 +458,7 @@ MODULE_DEVICE_TABLE(i2c, veml6075_id); static const struct of_device_id veml6075_of_match[] = { { .compatible = "vishay,veml6075" }, - {} + { } }; MODULE_DEVICE_TABLE(of, veml6075_of_match); diff --git a/drivers/iio/light/vl6180.c b/drivers/iio/light/vl6180.c index 6e2183a4243e..cc4f2e5404aa 100644 --- a/drivers/iio/light/vl6180.c +++ b/drivers/iio/light/vl6180.c @@ -745,7 +745,7 @@ static int vl6180_probe(struct i2c_client *client) static const struct of_device_id vl6180_of_match[] = { { .compatible = "st,vl6180", }, - { }, + { } }; MODULE_DEVICE_TABLE(of, vl6180_of_match); diff --git a/drivers/iio/magnetometer/ak8974.c b/drivers/iio/magnetometer/ak8974.c index 08975c60e325..857c92b7069c 100644 --- a/drivers/iio/magnetometer/ak8974.c +++ b/drivers/iio/magnetometer/ak8974.c @@ -704,7 +704,7 @@ ak8974_get_mount_matrix(const struct iio_dev *indio_dev, static const struct iio_chan_spec_ext_info ak8974_ext_info[] = { IIO_MOUNT_MATRIX(IIO_SHARED_BY_DIR, ak8974_get_mount_matrix), - { }, + { } }; #define AK8974_AXIS_CHANNEL(axis, index, bits) \ @@ -1023,14 +1023,14 @@ static const struct i2c_device_id ak8974_id[] = { { "ami306" }, { "ak8974" }, { "hscdtd008a" }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, ak8974_id); static const struct of_device_id ak8974_of_match[] = { { .compatible = "asahi-kasei,ak8974", }, { .compatible = "alps,hscdtd008a", }, - {} + { } }; MODULE_DEVICE_TABLE(of, ak8974_of_match); diff --git a/drivers/iio/magnetometer/ak8975.c b/drivers/iio/magnetometer/ak8975.c index ef1363126cc2..f8393576f463 100644 --- a/drivers/iio/magnetometer/ak8975.c +++ b/drivers/iio/magnetometer/ak8975.c @@ -1107,7 +1107,7 @@ static const struct i2c_device_id ak8975_id[] = { {"ak09912", (kernel_ulong_t)&ak_def_array[AK09912] }, {"ak09916", (kernel_ulong_t)&ak_def_array[AK09916] }, {"ak09918", (kernel_ulong_t)&ak_def_array[AK09918] }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, ak8975_id); @@ -1122,7 +1122,7 @@ static const struct of_device_id ak8975_of_match[] = { { .compatible = "ak09912", .data = &ak_def_array[AK09912] }, { .compatible = "asahi-kasei,ak09916", .data = &ak_def_array[AK09916] }, { .compatible = "asahi-kasei,ak09918", .data = &ak_def_array[AK09918] }, - {} + { } }; MODULE_DEVICE_TABLE(of, ak8975_of_match); diff --git a/drivers/iio/magnetometer/als31300.c b/drivers/iio/magnetometer/als31300.c index 87b60c4e81fa..85eb1428a849 100644 --- a/drivers/iio/magnetometer/als31300.c +++ b/drivers/iio/magnetometer/als31300.c @@ -457,7 +457,7 @@ static const struct i2c_device_id als31300_id[] = { .name = "als31300-2000", .driver_data = (kernel_ulong_t)&al31300_variant_2000, }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(i2c, als31300_id); @@ -474,7 +474,7 @@ static const struct of_device_id als31300_of_match[] = { .compatible = "allegromicro,als31300-2000", .data = &al31300_variant_2000, }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(of, als31300_of_match); diff --git a/drivers/iio/magnetometer/bmc150_magn_i2c.c b/drivers/iio/magnetometer/bmc150_magn_i2c.c index 8cbeda924bda..b110791f688a 100644 --- a/drivers/iio/magnetometer/bmc150_magn_i2c.c +++ b/drivers/iio/magnetometer/bmc150_magn_i2c.c @@ -42,7 +42,7 @@ static const struct i2c_device_id bmc150_magn_i2c_id[] = { { "bmc150_magn" }, { "bmc156_magn" }, { "bmm150_magn" }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, bmc150_magn_i2c_id); diff --git a/drivers/iio/magnetometer/bmc150_magn_spi.c b/drivers/iio/magnetometer/bmc150_magn_spi.c index 2d4b8cba32f1..896b1d280731 100644 --- a/drivers/iio/magnetometer/bmc150_magn_spi.c +++ b/drivers/iio/magnetometer/bmc150_magn_spi.c @@ -37,7 +37,7 @@ static const struct spi_device_id bmc150_magn_spi_id[] = { {"bmc150_magn", 0}, {"bmc156_magn", 0}, {"bmm150_magn", 0}, - {} + { } }; MODULE_DEVICE_TABLE(spi, bmc150_magn_spi_id); diff --git a/drivers/iio/magnetometer/hid-sensor-magn-3d.c b/drivers/iio/magnetometer/hid-sensor-magn-3d.c index 97ddaa2a03f6..c673f9323e47 100644 --- a/drivers/iio/magnetometer/hid-sensor-magn-3d.c +++ b/drivers/iio/magnetometer/hid-sensor-magn-3d.c @@ -563,7 +563,7 @@ static const struct platform_device_id hid_magn_3d_ids[] = { /* Format: HID-SENSOR-usage_id_in_hex_lowercase */ .name = "HID-SENSOR-200083", }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(platform, hid_magn_3d_ids); diff --git a/drivers/iio/magnetometer/hmc5843_i2c.c b/drivers/iio/magnetometer/hmc5843_i2c.c index 657a309e2bd5..b41709959e2b 100644 --- a/drivers/iio/magnetometer/hmc5843_i2c.c +++ b/drivers/iio/magnetometer/hmc5843_i2c.c @@ -84,7 +84,7 @@ static const struct of_device_id hmc5843_of_match[] = { { .compatible = "honeywell,hmc5883", .data = (void *)HMC5883_ID }, { .compatible = "honeywell,hmc5883l", .data = (void *)HMC5883L_ID }, { .compatible = "honeywell,hmc5983", .data = (void *)HMC5983_ID }, - {} + { } }; MODULE_DEVICE_TABLE(of, hmc5843_of_match); diff --git a/drivers/iio/magnetometer/mmc35240.c b/drivers/iio/magnetometer/mmc35240.c index dd480a4a5f98..e08a57cd6de2 100644 --- a/drivers/iio/magnetometer/mmc35240.c +++ b/drivers/iio/magnetometer/mmc35240.c @@ -556,13 +556,13 @@ MODULE_DEVICE_TABLE(of, mmc35240_of_match); static const struct acpi_device_id mmc35240_acpi_match[] = { {"MMC35240", 0}, - { }, + { } }; MODULE_DEVICE_TABLE(acpi, mmc35240_acpi_match); static const struct i2c_device_id mmc35240_id[] = { { "mmc35240" }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, mmc35240_id); diff --git a/drivers/iio/magnetometer/st_magn_i2c.c b/drivers/iio/magnetometer/st_magn_i2c.c index 1672b274768d..ed70e782af5e 100644 --- a/drivers/iio/magnetometer/st_magn_i2c.c +++ b/drivers/iio/magnetometer/st_magn_i2c.c @@ -54,7 +54,7 @@ static const struct of_device_id st_magn_of_match[] = { .compatible = "st,lsm303c-magn", .data = LSM303C_MAGN_DEV_NAME, }, - {}, + { } }; MODULE_DEVICE_TABLE(of, st_magn_of_match); @@ -102,7 +102,7 @@ static const struct i2c_device_id st_magn_id_table[] = { { LSM9DS1_MAGN_DEV_NAME }, { IIS2MDC_MAGN_DEV_NAME }, { LSM303C_MAGN_DEV_NAME }, - {}, + { } }; MODULE_DEVICE_TABLE(i2c, st_magn_id_table); diff --git a/drivers/iio/magnetometer/st_magn_spi.c b/drivers/iio/magnetometer/st_magn_spi.c index fe4d0e63133c..68816362bb95 100644 --- a/drivers/iio/magnetometer/st_magn_spi.c +++ b/drivers/iio/magnetometer/st_magn_spi.c @@ -49,7 +49,7 @@ static const struct of_device_id st_magn_of_match[] = { .compatible = "st,lsm303c-magn", .data = LSM303C_MAGN_DEV_NAME, }, - {} + { } }; MODULE_DEVICE_TABLE(of, st_magn_of_match); @@ -94,7 +94,7 @@ static const struct spi_device_id st_magn_id_table[] = { { LSM9DS1_MAGN_DEV_NAME }, { IIS2MDC_MAGN_DEV_NAME }, { LSM303C_MAGN_DEV_NAME }, - {}, + { } }; MODULE_DEVICE_TABLE(spi, st_magn_id_table); diff --git a/drivers/iio/magnetometer/tmag5273.c b/drivers/iio/magnetometer/tmag5273.c index 4187abe12784..2ca5c26f0091 100644 --- a/drivers/iio/magnetometer/tmag5273.c +++ b/drivers/iio/magnetometer/tmag5273.c @@ -712,13 +712,13 @@ static DEFINE_RUNTIME_DEV_PM_OPS(tmag5273_pm_ops, static const struct i2c_device_id tmag5273_id[] = { { "tmag5273" }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(i2c, tmag5273_id); static const struct of_device_id tmag5273_of_match[] = { { .compatible = "ti,tmag5273" }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(of, tmag5273_of_match); diff --git a/drivers/iio/magnetometer/yamaha-yas530.c b/drivers/iio/magnetometer/yamaha-yas530.c index 28012b20c64f..46bc64e676b1 100644 --- a/drivers/iio/magnetometer/yamaha-yas530.c +++ b/drivers/iio/magnetometer/yamaha-yas530.c @@ -1585,7 +1585,7 @@ static const struct i2c_device_id yas5xx_id[] = { {"yas532", (kernel_ulong_t)&yas5xx_chip_info_tbl[yas532] }, {"yas533", (kernel_ulong_t)&yas5xx_chip_info_tbl[yas533] }, {"yas537", (kernel_ulong_t)&yas5xx_chip_info_tbl[yas537] }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, yas5xx_id); @@ -1594,7 +1594,7 @@ static const struct of_device_id yas5xx_of_match[] = { { .compatible = "yamaha,yas532", &yas5xx_chip_info_tbl[yas532] }, { .compatible = "yamaha,yas533", &yas5xx_chip_info_tbl[yas533] }, { .compatible = "yamaha,yas537", &yas5xx_chip_info_tbl[yas537] }, - {} + { } }; MODULE_DEVICE_TABLE(of, yas5xx_of_match); diff --git a/drivers/iio/multiplexer/iio-mux.c b/drivers/iio/multiplexer/iio-mux.c index c309d991490c..b742ca9a99d1 100644 --- a/drivers/iio/multiplexer/iio-mux.c +++ b/drivers/iio/multiplexer/iio-mux.c @@ -448,7 +448,7 @@ static int mux_probe(struct platform_device *pdev) static const struct of_device_id mux_match[] = { { .compatible = "io-channel-mux" }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(of, mux_match); diff --git a/drivers/iio/orientation/hid-sensor-incl-3d.c b/drivers/iio/orientation/hid-sensor-incl-3d.c index 429035b65c65..4e23a598a3fb 100644 --- a/drivers/iio/orientation/hid-sensor-incl-3d.c +++ b/drivers/iio/orientation/hid-sensor-incl-3d.c @@ -399,7 +399,7 @@ static const struct platform_device_id hid_incl_3d_ids[] = { /* Format: HID-SENSOR-usage_id_in_hex_lowercase */ .name = "HID-SENSOR-200086", }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(platform, hid_incl_3d_ids); diff --git a/drivers/iio/orientation/hid-sensor-rotation.c b/drivers/iio/orientation/hid-sensor-rotation.c index 96f03988640c..c4b18fd0fa76 100644 --- a/drivers/iio/orientation/hid-sensor-rotation.c +++ b/drivers/iio/orientation/hid-sensor-rotation.c @@ -351,7 +351,7 @@ static const struct platform_device_id hid_dev_rot_ids[] = { /* Geomagnetic orientation(AM) sensor */ .name = "HID-SENSOR-2000c1", }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(platform, hid_dev_rot_ids); diff --git a/drivers/iio/position/hid-sensor-custom-intel-hinge.c b/drivers/iio/position/hid-sensor-custom-intel-hinge.c index 423bbb8a3b38..bff7039690ac 100644 --- a/drivers/iio/position/hid-sensor-custom-intel-hinge.c +++ b/drivers/iio/position/hid-sensor-custom-intel-hinge.c @@ -358,7 +358,7 @@ static const struct platform_device_id hid_hinge_ids[] = { /* Format: HID-SENSOR-INT-usage_id_in_hex_lowercase */ .name = "HID-SENSOR-INT-020b", }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(platform, hid_hinge_ids); diff --git a/drivers/iio/potentiometer/ad5272.c b/drivers/iio/potentiometer/ad5272.c index b17941e4c2f7..672b1ca3a920 100644 --- a/drivers/iio/potentiometer/ad5272.c +++ b/drivers/iio/potentiometer/ad5272.c @@ -199,7 +199,7 @@ static const struct of_device_id ad5272_dt_ids[] = { { .compatible = "adi,ad5272-100", .data = (void *)AD5272_100 }, { .compatible = "adi,ad5274-020", .data = (void *)AD5274_020 }, { .compatible = "adi,ad5274-100", .data = (void *)AD5274_100 }, - {} + { } }; MODULE_DEVICE_TABLE(of, ad5272_dt_ids); @@ -209,7 +209,7 @@ static const struct i2c_device_id ad5272_id[] = { { "ad5272-100", AD5272_100 }, { "ad5274-020", AD5274_020 }, { "ad5274-100", AD5274_100 }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, ad5272_id); diff --git a/drivers/iio/potentiometer/ds1803.c b/drivers/iio/potentiometer/ds1803.c index e0526dd0e3cb..5761f69c538a 100644 --- a/drivers/iio/potentiometer/ds1803.c +++ b/drivers/iio/potentiometer/ds1803.c @@ -231,7 +231,7 @@ static const struct of_device_id ds1803_dt_ids[] = { { .compatible = "maxim,ds1803-050", .data = &ds1803_cfg[DS1803_050] }, { .compatible = "maxim,ds1803-100", .data = &ds1803_cfg[DS1803_100] }, { .compatible = "maxim,ds3502", .data = &ds1803_cfg[DS3502] }, - {} + { } }; MODULE_DEVICE_TABLE(of, ds1803_dt_ids); @@ -240,7 +240,7 @@ static const struct i2c_device_id ds1803_id[] = { { "ds1803-050", (kernel_ulong_t)&ds1803_cfg[DS1803_050] }, { "ds1803-100", (kernel_ulong_t)&ds1803_cfg[DS1803_100] }, { "ds3502", (kernel_ulong_t)&ds1803_cfg[DS3502] }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, ds1803_id); diff --git a/drivers/iio/potentiometer/max5432.c b/drivers/iio/potentiometer/max5432.c index c8e2481dadb5..26390be79d02 100644 --- a/drivers/iio/potentiometer/max5432.c +++ b/drivers/iio/potentiometer/max5432.c @@ -114,7 +114,7 @@ static const struct of_device_id max5432_dt_ids[] = { { .compatible = "maxim,max5433", .data = (void *)MAX5432_OHM_100K }, { .compatible = "maxim,max5434", .data = (void *)MAX5432_OHM_50K }, { .compatible = "maxim,max5435", .data = (void *)MAX5432_OHM_100K }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(of, max5432_dt_ids); diff --git a/drivers/iio/potentiometer/max5487.c b/drivers/iio/potentiometer/max5487.c index 4838d2e72f53..3b11b991940b 100644 --- a/drivers/iio/potentiometer/max5487.c +++ b/drivers/iio/potentiometer/max5487.c @@ -137,7 +137,7 @@ static const struct acpi_device_id max5487_acpi_match[] = { { "MAX5487", 10 }, { "MAX5488", 50 }, { "MAX5489", 100 }, - { }, + { } }; MODULE_DEVICE_TABLE(acpi, max5487_acpi_match); diff --git a/drivers/iio/potentiometer/mcp4018.c b/drivers/iio/potentiometer/mcp4018.c index 44678d372126..a88bb2231850 100644 --- a/drivers/iio/potentiometer/mcp4018.c +++ b/drivers/iio/potentiometer/mcp4018.c @@ -117,7 +117,7 @@ static const struct i2c_device_id mcp4018_id[] = { MCP4018_ID_TABLE("mcp4019-103", MCP4018_103), MCP4018_ID_TABLE("mcp4019-503", MCP4018_503), MCP4018_ID_TABLE("mcp4019-104", MCP4018_104), - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(i2c, mcp4018_id); @@ -139,7 +139,7 @@ static const struct of_device_id mcp4018_of_match[] = { MCP4018_COMPATIBLE("microchip,mcp4019-103", MCP4018_103), MCP4018_COMPATIBLE("microchip,mcp4019-503", MCP4018_503), MCP4018_COMPATIBLE("microchip,mcp4019-104", MCP4018_104), - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(of, mcp4018_of_match); diff --git a/drivers/iio/potentiometer/mcp41010.c b/drivers/iio/potentiometer/mcp41010.c index 2b73c7540209..f35fc4a6c55b 100644 --- a/drivers/iio/potentiometer/mcp41010.c +++ b/drivers/iio/potentiometer/mcp41010.c @@ -171,7 +171,7 @@ static const struct of_device_id mcp41010_match[] = { { .compatible = "microchip,mcp42010", .data = &mcp41010_cfg[MCP42010] }, { .compatible = "microchip,mcp42050", .data = &mcp41010_cfg[MCP42050] }, { .compatible = "microchip,mcp42100", .data = &mcp41010_cfg[MCP42100] }, - {} + { } }; MODULE_DEVICE_TABLE(of, mcp41010_match); @@ -182,7 +182,7 @@ static const struct spi_device_id mcp41010_id[] = { { "mcp42010", MCP42010 }, { "mcp42050", MCP42050 }, { "mcp42100", MCP42100 }, - {} + { } }; MODULE_DEVICE_TABLE(spi, mcp41010_id); diff --git a/drivers/iio/potentiometer/mcp4131.c b/drivers/iio/potentiometer/mcp4131.c index 7890c0993ec4..9082b559d029 100644 --- a/drivers/iio/potentiometer/mcp4131.c +++ b/drivers/iio/potentiometer/mcp4131.c @@ -403,7 +403,7 @@ static const struct of_device_id mcp4131_dt_ids[] = { .data = &mcp4131_cfg[MCP426x_503] }, { .compatible = "microchip,mcp4262-104", .data = &mcp4131_cfg[MCP426x_104] }, - {} + { } }; MODULE_DEVICE_TABLE(of, mcp4131_dt_ids); @@ -472,7 +472,7 @@ static const struct spi_device_id mcp4131_id[] = { { "mcp4262-103", MCP426x_103 }, { "mcp4262-503", MCP426x_503 }, { "mcp4262-104", MCP426x_104 }, - {} + { } }; MODULE_DEVICE_TABLE(spi, mcp4131_id); diff --git a/drivers/iio/potentiometer/mcp4531.c b/drivers/iio/potentiometer/mcp4531.c index f28880ebd758..9912e91ff7b4 100644 --- a/drivers/iio/potentiometer/mcp4531.c +++ b/drivers/iio/potentiometer/mcp4531.c @@ -276,7 +276,7 @@ static const struct i2c_device_id mcp4531_id[] = { MCP4531_ID_TABLE("mcp4662-103", MCP466x_103), MCP4531_ID_TABLE("mcp4662-503", MCP466x_503), MCP4531_ID_TABLE("mcp4662-104", MCP466x_104), - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(i2c, mcp4531_id); @@ -350,7 +350,7 @@ static const struct of_device_id mcp4531_of_match[] = { MCP4531_COMPATIBLE("microchip,mcp4662-103", MCP466x_103), MCP4531_COMPATIBLE("microchip,mcp4662-503", MCP466x_503), MCP4531_COMPATIBLE("microchip,mcp4662-104", MCP466x_104), - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(of, mcp4531_of_match); diff --git a/drivers/iio/potentiometer/tpl0102.c b/drivers/iio/potentiometer/tpl0102.c index 8923ccb0fc4f..a42b57733363 100644 --- a/drivers/iio/potentiometer/tpl0102.c +++ b/drivers/iio/potentiometer/tpl0102.c @@ -153,7 +153,7 @@ static const struct i2c_device_id tpl0102_id[] = { { "cat5140-104", CAT5140_104 }, { "tpl0102-104", TPL0102_104 }, { "tpl0401-103", TPL0401_103 }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, tpl0102_id); diff --git a/drivers/iio/potentiostat/lmp91000.c b/drivers/iio/potentiostat/lmp91000.c index c2c6b2b29867..030498d0b763 100644 --- a/drivers/iio/potentiostat/lmp91000.c +++ b/drivers/iio/potentiostat/lmp91000.c @@ -400,14 +400,14 @@ static void lmp91000_remove(struct i2c_client *client) static const struct of_device_id lmp91000_of_match[] = { { .compatible = "ti,lmp91000", }, { .compatible = "ti,lmp91002", }, - { }, + { } }; MODULE_DEVICE_TABLE(of, lmp91000_of_match); static const struct i2c_device_id lmp91000_id[] = { { "lmp91000" }, { "lmp91002" }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, lmp91000_id); diff --git a/drivers/iio/pressure/abp060mg.c b/drivers/iio/pressure/abp060mg.c index 752a63c06b44..a0d956c3e254 100644 --- a/drivers/iio/pressure/abp060mg.c +++ b/drivers/iio/pressure/abp060mg.c @@ -247,7 +247,7 @@ static const struct i2c_device_id abp060mg_id_table[] = { { "abp015pd", ABP015PD }, { "abp030pd", ABP030PD }, { "abp060pd", ABP060PD }, - { /* empty */ }, + { } }; MODULE_DEVICE_TABLE(i2c, abp060mg_id_table); diff --git a/drivers/iio/pressure/bmp280-i2c.c b/drivers/iio/pressure/bmp280-i2c.c index 868e1b2ec711..8e459b6c97ff 100644 --- a/drivers/iio/pressure/bmp280-i2c.c +++ b/drivers/iio/pressure/bmp280-i2c.c @@ -33,7 +33,7 @@ static const struct of_device_id bmp280_of_i2c_match[] = { { .compatible = "bosch,bme280", .data = &bme280_chip_info }, { .compatible = "bosch,bmp380", .data = &bmp380_chip_info }, { .compatible = "bosch,bmp580", .data = &bmp580_chip_info }, - { }, + { } }; MODULE_DEVICE_TABLE(of, bmp280_of_i2c_match); @@ -44,7 +44,7 @@ static const struct i2c_device_id bmp280_i2c_id[] = { {"bme280", (kernel_ulong_t)&bme280_chip_info }, {"bmp380", (kernel_ulong_t)&bmp380_chip_info }, {"bmp580", (kernel_ulong_t)&bmp580_chip_info }, - { }, + { } }; MODULE_DEVICE_TABLE(i2c, bmp280_i2c_id); diff --git a/drivers/iio/pressure/bmp280-spi.c b/drivers/iio/pressure/bmp280-spi.c index 0e6e27892f99..c4fded3398da 100644 --- a/drivers/iio/pressure/bmp280-spi.c +++ b/drivers/iio/pressure/bmp280-spi.c @@ -121,7 +121,7 @@ static const struct of_device_id bmp280_of_spi_match[] = { { .compatible = "bosch,bme280", .data = &bme280_chip_info }, { .compatible = "bosch,bmp380", .data = &bmp380_chip_info }, { .compatible = "bosch,bmp580", .data = &bmp580_chip_info }, - { }, + { } }; MODULE_DEVICE_TABLE(of, bmp280_of_spi_match); diff --git a/drivers/iio/pressure/cros_ec_baro.c b/drivers/iio/pressure/cros_ec_baro.c index 2649c2f89e89..c6b950c596c1 100644 --- a/drivers/iio/pressure/cros_ec_baro.c +++ b/drivers/iio/pressure/cros_ec_baro.c @@ -192,7 +192,7 @@ static const struct platform_device_id cros_ec_baro_ids[] = { { .name = "cros-ec-baro", }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(platform, cros_ec_baro_ids); diff --git a/drivers/iio/pressure/dlhl60d.c b/drivers/iio/pressure/dlhl60d.c index e0aa12949cde..48afe5c94000 100644 --- a/drivers/iio/pressure/dlhl60d.c +++ b/drivers/iio/pressure/dlhl60d.c @@ -343,14 +343,14 @@ static int dlh_probe(struct i2c_client *client) static const struct of_device_id dlh_of_match[] = { { .compatible = "asc,dlhl60d" }, { .compatible = "asc,dlhl60g" }, - {} + { } }; MODULE_DEVICE_TABLE(of, dlh_of_match); static const struct i2c_device_id dlh_id[] = { { "dlhl60d", dlhl60d }, { "dlhl60g", dlhl60g }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, dlh_id); diff --git a/drivers/iio/pressure/dps310.c b/drivers/iio/pressure/dps310.c index c6f44f0f4d2e..8edaa4d10a70 100644 --- a/drivers/iio/pressure/dps310.c +++ b/drivers/iio/pressure/dps310.c @@ -888,13 +888,13 @@ static int dps310_probe(struct i2c_client *client) static const struct i2c_device_id dps310_id[] = { { DPS310_DEV_NAME }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, dps310_id); static const struct acpi_device_id dps310_acpi_match[] = { { "IFX3100" }, - {} + { } }; MODULE_DEVICE_TABLE(acpi, dps310_acpi_match); diff --git a/drivers/iio/pressure/hid-sensor-press.c b/drivers/iio/pressure/hid-sensor-press.c index f7273d30c5f0..bffeddff5e91 100644 --- a/drivers/iio/pressure/hid-sensor-press.c +++ b/drivers/iio/pressure/hid-sensor-press.c @@ -339,7 +339,7 @@ static const struct platform_device_id hid_press_ids[] = { /* Format: HID-SENSOR-usage_id_in_hex_lowercase */ .name = "HID-SENSOR-200031", }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(platform, hid_press_ids); diff --git a/drivers/iio/pressure/hp03.c b/drivers/iio/pressure/hp03.c index 6f7a16787143..cbb4aaf45e2c 100644 --- a/drivers/iio/pressure/hp03.c +++ b/drivers/iio/pressure/hp03.c @@ -273,7 +273,7 @@ MODULE_DEVICE_TABLE(i2c, hp03_id); static const struct of_device_id hp03_of_match[] = { { .compatible = "hoperf,hp03" }, - { }, + { } }; MODULE_DEVICE_TABLE(of, hp03_of_match); diff --git a/drivers/iio/pressure/hp206c.c b/drivers/iio/pressure/hp206c.c index 442740941933..abe10ccb6770 100644 --- a/drivers/iio/pressure/hp206c.c +++ b/drivers/iio/pressure/hp206c.c @@ -396,13 +396,13 @@ static int hp206c_probe(struct i2c_client *client) static const struct i2c_device_id hp206c_id[] = { {"hp206c"}, - {} + { } }; MODULE_DEVICE_TABLE(i2c, hp206c_id); static const struct acpi_device_id hp206c_acpi_match[] = { {"HOP206C", 0}, - { }, + { } }; MODULE_DEVICE_TABLE(acpi, hp206c_acpi_match); diff --git a/drivers/iio/pressure/hsc030pa_i2c.c b/drivers/iio/pressure/hsc030pa_i2c.c index 7f2398aa8155..a34ef4653f34 100644 --- a/drivers/iio/pressure/hsc030pa_i2c.c +++ b/drivers/iio/pressure/hsc030pa_i2c.c @@ -48,13 +48,13 @@ static int hsc_i2c_probe(struct i2c_client *client) static const struct of_device_id hsc_i2c_match[] = { { .compatible = "honeywell,hsc030pa" }, - {} + { } }; MODULE_DEVICE_TABLE(of, hsc_i2c_match); static const struct i2c_device_id hsc_i2c_id[] = { { "hsc030pa" }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, hsc_i2c_id); diff --git a/drivers/iio/pressure/hsc030pa_spi.c b/drivers/iio/pressure/hsc030pa_spi.c index 60768726e9ad..5d331b3b6da8 100644 --- a/drivers/iio/pressure/hsc030pa_spi.c +++ b/drivers/iio/pressure/hsc030pa_spi.c @@ -35,13 +35,13 @@ static int hsc_spi_probe(struct spi_device *spi) static const struct of_device_id hsc_spi_match[] = { { .compatible = "honeywell,hsc030pa" }, - {} + { } }; MODULE_DEVICE_TABLE(of, hsc_spi_match); static const struct spi_device_id hsc_spi_id[] = { { "hsc030pa" }, - {} + { } }; MODULE_DEVICE_TABLE(spi, hsc_spi_id); diff --git a/drivers/iio/pressure/mpl115_spi.c b/drivers/iio/pressure/mpl115_spi.c index 888cfa666238..4e1d24beff94 100644 --- a/drivers/iio/pressure/mpl115_spi.c +++ b/drivers/iio/pressure/mpl115_spi.c @@ -85,7 +85,7 @@ static int mpl115_spi_probe(struct spi_device *spi) static const struct spi_device_id mpl115_spi_ids[] = { { "mpl115", 0 }, - {} + { } }; MODULE_DEVICE_TABLE(spi, mpl115_spi_ids); diff --git a/drivers/iio/pressure/mprls0025pa_i2c.c b/drivers/iio/pressure/mprls0025pa_i2c.c index 48b23a4256ce..1a48f8d43d71 100644 --- a/drivers/iio/pressure/mprls0025pa_i2c.c +++ b/drivers/iio/pressure/mprls0025pa_i2c.c @@ -74,13 +74,13 @@ static int mpr_i2c_probe(struct i2c_client *client) static const struct of_device_id mpr_i2c_match[] = { { .compatible = "honeywell,mprls0025pa" }, - {} + { } }; MODULE_DEVICE_TABLE(of, mpr_i2c_match); static const struct i2c_device_id mpr_i2c_id[] = { { "mprls0025pa" }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, mpr_i2c_id); diff --git a/drivers/iio/pressure/mprls0025pa_spi.c b/drivers/iio/pressure/mprls0025pa_spi.c index 09f724c76d70..d04102f8a4a0 100644 --- a/drivers/iio/pressure/mprls0025pa_spi.c +++ b/drivers/iio/pressure/mprls0025pa_spi.c @@ -66,13 +66,13 @@ static int mpr_spi_probe(struct spi_device *spi) static const struct of_device_id mpr_spi_match[] = { { .compatible = "honeywell,mprls0025pa" }, - {} + { } }; MODULE_DEVICE_TABLE(of, mpr_spi_match); static const struct spi_device_id mpr_spi_id[] = { { "mprls0025pa" }, - {} + { } }; MODULE_DEVICE_TABLE(spi, mpr_spi_id); diff --git a/drivers/iio/pressure/ms5637.c b/drivers/iio/pressure/ms5637.c index a1767a17fdce..59705a666979 100644 --- a/drivers/iio/pressure/ms5637.c +++ b/drivers/iio/pressure/ms5637.c @@ -219,7 +219,7 @@ static const struct i2c_device_id ms5637_id[] = { {"ms5805", (kernel_ulong_t)&ms5805_data }, {"ms5837", (kernel_ulong_t)&ms5837_data }, {"ms8607-temppressure", (kernel_ulong_t)&ms8607_data }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, ms5637_id); @@ -229,7 +229,7 @@ static const struct of_device_id ms5637_of_match[] = { { .compatible = "meas,ms5805", .data = &ms5805_data }, { .compatible = "meas,ms5837", .data = &ms5837_data }, { .compatible = "meas,ms8607-temppressure", .data = &ms8607_data }, - { }, + { } }; MODULE_DEVICE_TABLE(of, ms5637_of_match); diff --git a/drivers/iio/pressure/rohm-bm1390.c b/drivers/iio/pressure/rohm-bm1390.c index c48231739f48..c651ead080df 100644 --- a/drivers/iio/pressure/rohm-bm1390.c +++ b/drivers/iio/pressure/rohm-bm1390.c @@ -882,13 +882,13 @@ static int bm1390_probe(struct i2c_client *i2c) static const struct of_device_id bm1390_of_match[] = { { .compatible = "rohm,bm1390glv-z" }, - {} + { } }; MODULE_DEVICE_TABLE(of, bm1390_of_match); static const struct i2c_device_id bm1390_id[] = { { "bm1390glv-z", }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, bm1390_id); diff --git a/drivers/iio/pressure/st_pressure_i2c.c b/drivers/iio/pressure/st_pressure_i2c.c index b7b66ddc3a73..0f50bac1fb4d 100644 --- a/drivers/iio/pressure/st_pressure_i2c.c +++ b/drivers/iio/pressure/st_pressure_i2c.c @@ -50,13 +50,13 @@ static const struct of_device_id st_press_of_match[] = { .compatible = "st,lps22df", .data = LPS22DF_PRESS_DEV_NAME, }, - {}, + { } }; MODULE_DEVICE_TABLE(of, st_press_of_match); static const struct acpi_device_id st_press_acpi_match[] = { {"SNO9210", LPS22HB}, - { }, + { } }; MODULE_DEVICE_TABLE(acpi, st_press_acpi_match); @@ -69,7 +69,7 @@ static const struct i2c_device_id st_press_id_table[] = { { LPS35HW_PRESS_DEV_NAME, LPS35HW }, { LPS22HH_PRESS_DEV_NAME, LPS22HH }, { LPS22DF_PRESS_DEV_NAME, LPS22DF }, - {}, + { } }; MODULE_DEVICE_TABLE(i2c, st_press_id_table); diff --git a/drivers/iio/pressure/st_pressure_spi.c b/drivers/iio/pressure/st_pressure_spi.c index 1a4bd1a0f787..39827e6841ca 100644 --- a/drivers/iio/pressure/st_pressure_spi.c +++ b/drivers/iio/pressure/st_pressure_spi.c @@ -55,7 +55,7 @@ static const struct of_device_id st_press_of_match[] = { .compatible = "st,lps22df", .data = LPS22DF_PRESS_DEV_NAME, }, - {}, + { } }; MODULE_DEVICE_TABLE(of, st_press_of_match); @@ -106,7 +106,7 @@ static const struct spi_device_id st_press_id_table[] = { { "lps25h-press", }, { "lps331ap-press" }, { "lps22hb-press" }, - {}, + { } }; MODULE_DEVICE_TABLE(spi, st_press_id_table); diff --git a/drivers/iio/pressure/zpa2326_spi.c b/drivers/iio/pressure/zpa2326_spi.c index c678f5b96266..8a695b065a5f 100644 --- a/drivers/iio/pressure/zpa2326_spi.c +++ b/drivers/iio/pressure/zpa2326_spi.c @@ -63,7 +63,7 @@ static void zpa2326_remove_spi(struct spi_device *spi) static const struct spi_device_id zpa2326_spi_ids[] = { { "zpa2326", 0 }, - { }, + { } }; MODULE_DEVICE_TABLE(spi, zpa2326_spi_ids); diff --git a/drivers/iio/proximity/as3935.c b/drivers/iio/proximity/as3935.c index 9d3caf2bef18..d48d7b572878 100644 --- a/drivers/iio/proximity/as3935.c +++ b/drivers/iio/proximity/as3935.c @@ -444,13 +444,13 @@ static int as3935_probe(struct spi_device *spi) static const struct of_device_id as3935_of_match[] = { { .compatible = "ams,as3935", }, - { /* sentinel */ }, + { } }; MODULE_DEVICE_TABLE(of, as3935_of_match); static const struct spi_device_id as3935_id[] = { {"as3935", 0}, - {}, + { } }; MODULE_DEVICE_TABLE(spi, as3935_id); diff --git a/drivers/iio/proximity/cros_ec_mkbp_proximity.c b/drivers/iio/proximity/cros_ec_mkbp_proximity.c index d2ddb7d45ec2..1f9de7066ebf 100644 --- a/drivers/iio/proximity/cros_ec_mkbp_proximity.c +++ b/drivers/iio/proximity/cros_ec_mkbp_proximity.c @@ -245,7 +245,7 @@ static void cros_ec_mkbp_proximity_remove(struct platform_device *pdev) static const struct of_device_id cros_ec_mkbp_proximity_of_match[] = { { .compatible = "google,cros-ec-mkbp-proximity" }, - {} + { } }; MODULE_DEVICE_TABLE(of, cros_ec_mkbp_proximity_of_match); diff --git a/drivers/iio/proximity/hx9023s.c b/drivers/iio/proximity/hx9023s.c index 5be5f4986347..f2037fd99a8d 100644 --- a/drivers/iio/proximity/hx9023s.c +++ b/drivers/iio/proximity/hx9023s.c @@ -1190,13 +1190,13 @@ static DEFINE_SIMPLE_DEV_PM_OPS(hx9023s_pm_ops, hx9023s_suspend, static const struct of_device_id hx9023s_of_match[] = { { .compatible = "tyhx,hx9023s" }, - {} + { } }; MODULE_DEVICE_TABLE(of, hx9023s_of_match); static const struct i2c_device_id hx9023s_id[] = { { "hx9023s" }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, hx9023s_id); diff --git a/drivers/iio/proximity/irsd200.c b/drivers/iio/proximity/irsd200.c index b0ffd3574013..1b1b6dfdfa78 100644 --- a/drivers/iio/proximity/irsd200.c +++ b/drivers/iio/proximity/irsd200.c @@ -941,7 +941,7 @@ static const struct of_device_id irsd200_of_match[] = { { .compatible = "murata,irsd200", }, - {} + { } }; MODULE_DEVICE_TABLE(of, irsd200_of_match); diff --git a/drivers/iio/proximity/isl29501.c b/drivers/iio/proximity/isl29501.c index dc66ca9bba6b..d1510fe24050 100644 --- a/drivers/iio/proximity/isl29501.c +++ b/drivers/iio/proximity/isl29501.c @@ -481,7 +481,7 @@ static const struct iio_chan_spec_ext_info isl29501_ext_info[] = { _ISL29501_EXT_INFO("calib_phase_temp_b", REG_CALIB_PHASE_TEMP_B), _ISL29501_EXT_INFO("calib_phase_light_a", REG_CALIB_PHASE_LIGHT_A), _ISL29501_EXT_INFO("calib_phase_light_b", REG_CALIB_PHASE_LIGHT_B), - { }, + { } }; #define ISL29501_DISTANCE_SCAN_INDEX 0 @@ -990,7 +990,7 @@ static int isl29501_probe(struct i2c_client *client) static const struct i2c_device_id isl29501_id[] = { { "isl29501" }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, isl29501_id); diff --git a/drivers/iio/proximity/mb1232.c b/drivers/iio/proximity/mb1232.c index cfc75d001f20..24524edae0b4 100644 --- a/drivers/iio/proximity/mb1232.c +++ b/drivers/iio/proximity/mb1232.c @@ -239,7 +239,7 @@ static const struct of_device_id of_mb1232_match[] = { { .compatible = "maxbotix,mb1242", }, { .compatible = "maxbotix,mb7040", }, { .compatible = "maxbotix,mb7137", }, - {}, + { } }; MODULE_DEVICE_TABLE(of, of_mb1232_match); diff --git a/drivers/iio/proximity/ping.c b/drivers/iio/proximity/ping.c index 2ad69b150902..c5b4e1378b7d 100644 --- a/drivers/iio/proximity/ping.c +++ b/drivers/iio/proximity/ping.c @@ -268,7 +268,7 @@ static const struct iio_chan_spec ping_chan_spec[] = { static const struct of_device_id of_ping_match[] = { { .compatible = "parallax,ping", .data = &pa_ping_cfg }, { .compatible = "parallax,laserping", .data = &pa_laser_ping_cfg }, - {}, + { } }; MODULE_DEVICE_TABLE(of, of_ping_match); diff --git a/drivers/iio/proximity/srf04.c b/drivers/iio/proximity/srf04.c index 71ad29e441b2..b059bac1078b 100644 --- a/drivers/iio/proximity/srf04.c +++ b/drivers/iio/proximity/srf04.c @@ -240,7 +240,7 @@ static const struct of_device_id of_srf04_match[] = { { .compatible = "maxbotix,mb1020", .data = &mb_lv_cfg }, { .compatible = "maxbotix,mb1030", .data = &mb_lv_cfg }, { .compatible = "maxbotix,mb1040", .data = &mb_lv_cfg }, - {}, + { } }; MODULE_DEVICE_TABLE(of, of_srf04_match); diff --git a/drivers/iio/proximity/srf08.c b/drivers/iio/proximity/srf08.c index 86cab113ef3d..940fad6aeaa4 100644 --- a/drivers/iio/proximity/srf08.c +++ b/drivers/iio/proximity/srf08.c @@ -531,7 +531,7 @@ static const struct of_device_id of_srf08_match[] = { { .compatible = "devantech,srf02", (void *)SRF02 }, { .compatible = "devantech,srf08", (void *)SRF08 }, { .compatible = "devantech,srf10", (void *)SRF10 }, - {}, + { } }; MODULE_DEVICE_TABLE(of, of_srf08_match); diff --git a/drivers/iio/proximity/sx9310.c b/drivers/iio/proximity/sx9310.c index b60707eba39d..fb02eac78ed4 100644 --- a/drivers/iio/proximity/sx9310.c +++ b/drivers/iio/proximity/sx9310.c @@ -995,21 +995,21 @@ static const struct sx931x_info sx9311_info = { static const struct acpi_device_id sx9310_acpi_match[] = { { "STH9310", (kernel_ulong_t)&sx9310_info }, { "STH9311", (kernel_ulong_t)&sx9311_info }, - {} + { } }; MODULE_DEVICE_TABLE(acpi, sx9310_acpi_match); static const struct of_device_id sx9310_of_match[] = { { .compatible = "semtech,sx9310", &sx9310_info }, { .compatible = "semtech,sx9311", &sx9311_info }, - {} + { } }; MODULE_DEVICE_TABLE(of, sx9310_of_match); static const struct i2c_device_id sx9310_id[] = { { "sx9310", (kernel_ulong_t)&sx9310_info }, { "sx9311", (kernel_ulong_t)&sx9311_info }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, sx9310_id); diff --git a/drivers/iio/proximity/sx9324.c b/drivers/iio/proximity/sx9324.c index 73d972416c01..c7b2d03c23bc 100644 --- a/drivers/iio/proximity/sx9324.c +++ b/drivers/iio/proximity/sx9324.c @@ -202,7 +202,7 @@ static const struct iio_chan_spec_ext_info sx9324_channel_ext_info[] = { .shared = IIO_SEPARATE, .read = sx9324_phase_configuration_show, }, - {} + { } }; #define SX9324_CHANNEL(idx) \ diff --git a/drivers/iio/proximity/sx9500.c b/drivers/iio/proximity/sx9500.c index b5e2855975ee..8913da59dc73 100644 --- a/drivers/iio/proximity/sx9500.c +++ b/drivers/iio/proximity/sx9500.c @@ -865,7 +865,7 @@ static const struct acpi_gpio_mapping acpi_sx9500_gpios[] = { * GPIO to be output only. Ask the GPIO core to ignore this limit. */ { "interrupt-gpios", &interrupt_gpios, 1, ACPI_GPIO_QUIRK_NO_IO_RESTRICTION }, - { }, + { } }; static void sx9500_gpio_probe(struct i2c_client *client, @@ -1030,7 +1030,7 @@ static DEFINE_SIMPLE_DEV_PM_OPS(sx9500_pm_ops, sx9500_suspend, sx9500_resume); static const struct acpi_device_id sx9500_acpi_match[] = { {"SSX9500", 0}, {"SASX9500", 0}, - { }, + { } }; MODULE_DEVICE_TABLE(acpi, sx9500_acpi_match); diff --git a/drivers/iio/proximity/vcnl3020.c b/drivers/iio/proximity/vcnl3020.c index bb6c9cc88b35..31e77d9e0c90 100644 --- a/drivers/iio/proximity/vcnl3020.c +++ b/drivers/iio/proximity/vcnl3020.c @@ -653,7 +653,7 @@ static const struct of_device_id vcnl3020_of_match[] = { { .compatible = "vishay,vcnl3020", }, - {} + { } }; MODULE_DEVICE_TABLE(of, vcnl3020_of_match); diff --git a/drivers/iio/resolver/ad2s1200.c b/drivers/iio/resolver/ad2s1200.c index 9d95241bdf8f..0bc84f12cb34 100644 --- a/drivers/iio/resolver/ad2s1200.c +++ b/drivers/iio/resolver/ad2s1200.c @@ -186,7 +186,7 @@ MODULE_DEVICE_TABLE(of, ad2s1200_of_match); static const struct spi_device_id ad2s1200_id[] = { { "ad2s1200" }, { "ad2s1205" }, - {} + { } }; MODULE_DEVICE_TABLE(spi, ad2s1200_id); diff --git a/drivers/iio/resolver/ad2s1210.c b/drivers/iio/resolver/ad2s1210.c index ab860cedecd1..80a2f7ebda8f 100644 --- a/drivers/iio/resolver/ad2s1210.c +++ b/drivers/iio/resolver/ad2s1210.c @@ -1597,7 +1597,7 @@ MODULE_DEVICE_TABLE(of, ad2s1210_of_match); static const struct spi_device_id ad2s1210_id[] = { { "ad2s1210" }, - {} + { } }; MODULE_DEVICE_TABLE(spi, ad2s1210_id); diff --git a/drivers/iio/resolver/ad2s90.c b/drivers/iio/resolver/ad2s90.c index be6836e55376..18f1c905eeac 100644 --- a/drivers/iio/resolver/ad2s90.c +++ b/drivers/iio/resolver/ad2s90.c @@ -105,13 +105,13 @@ static int ad2s90_probe(struct spi_device *spi) static const struct of_device_id ad2s90_of_match[] = { { .compatible = "adi,ad2s90", }, - {} + { } }; MODULE_DEVICE_TABLE(of, ad2s90_of_match); static const struct spi_device_id ad2s90_id[] = { { "ad2s90" }, - {} + { } }; MODULE_DEVICE_TABLE(spi, ad2s90_id); diff --git a/drivers/iio/temperature/hid-sensor-temperature.c b/drivers/iio/temperature/hid-sensor-temperature.c index 692520e1c497..09f470bb0841 100644 --- a/drivers/iio/temperature/hid-sensor-temperature.c +++ b/drivers/iio/temperature/hid-sensor-temperature.c @@ -272,7 +272,7 @@ static const struct platform_device_id hid_temperature_ids[] = { /* Format: HID-SENSOR-usage_id_in_hex_lowercase */ .name = "HID-SENSOR-200033", }, - { /* sentinel */ } + { } }; MODULE_DEVICE_TABLE(platform, hid_temperature_ids); diff --git a/drivers/iio/temperature/ltc2983.c b/drivers/iio/temperature/ltc2983.c index f8ea2219ab48..7dd40d69cce6 100644 --- a/drivers/iio/temperature/ltc2983.c +++ b/drivers/iio/temperature/ltc2983.c @@ -1664,7 +1664,7 @@ static const struct spi_device_id ltc2983_id_table[] = { { "ltc2984", (kernel_ulong_t)<c2984_chip_info_data }, { "ltc2986", (kernel_ulong_t)<c2986_chip_info_data }, { "ltm2985", (kernel_ulong_t)<m2985_chip_info_data }, - {}, + { } }; MODULE_DEVICE_TABLE(spi, ltc2983_id_table); @@ -1673,7 +1673,7 @@ static const struct of_device_id ltc2983_of_match[] = { { .compatible = "adi,ltc2984", .data = <c2984_chip_info_data }, { .compatible = "adi,ltc2986", .data = <c2986_chip_info_data }, { .compatible = "adi,ltm2985", .data = <m2985_chip_info_data }, - {}, + { } }; MODULE_DEVICE_TABLE(of, ltc2983_of_match); diff --git a/drivers/iio/temperature/maxim_thermocouple.c b/drivers/iio/temperature/maxim_thermocouple.c index a13efde76397..0bbbadeed940 100644 --- a/drivers/iio/temperature/maxim_thermocouple.c +++ b/drivers/iio/temperature/maxim_thermocouple.c @@ -265,7 +265,7 @@ static const struct spi_device_id maxim_thermocouple_id[] = { {"max31855t", MAX31855T}, {"max31855e", MAX31855E}, {"max31855r", MAX31855R}, - {}, + { } }; MODULE_DEVICE_TABLE(spi, maxim_thermocouple_id); diff --git a/drivers/iio/temperature/mcp9600.c b/drivers/iio/temperature/mcp9600.c index c2447860adfd..6e9108d5cf75 100644 --- a/drivers/iio/temperature/mcp9600.c +++ b/drivers/iio/temperature/mcp9600.c @@ -449,13 +449,13 @@ static int mcp9600_probe(struct i2c_client *client) static const struct i2c_device_id mcp9600_id[] = { { "mcp9600" }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, mcp9600_id); static const struct of_device_id mcp9600_of_match[] = { { .compatible = "microchip,mcp9600" }, - {} + { } }; MODULE_DEVICE_TABLE(of, mcp9600_of_match); diff --git a/drivers/iio/temperature/tmp007.c b/drivers/iio/temperature/tmp007.c index fd4d389ce1df..043283b02c4d 100644 --- a/drivers/iio/temperature/tmp007.c +++ b/drivers/iio/temperature/tmp007.c @@ -558,7 +558,7 @@ static DEFINE_SIMPLE_DEV_PM_OPS(tmp007_pm_ops, tmp007_suspend, tmp007_resume); static const struct of_device_id tmp007_of_match[] = { { .compatible = "ti,tmp007", }, - { }, + { } }; MODULE_DEVICE_TABLE(of, tmp007_of_match); diff --git a/drivers/iio/temperature/tsys01.c b/drivers/iio/temperature/tsys01.c index cfaa16f46a3f..334bba6fdae6 100644 --- a/drivers/iio/temperature/tsys01.c +++ b/drivers/iio/temperature/tsys01.c @@ -207,13 +207,13 @@ static int tsys01_i2c_probe(struct i2c_client *client) static const struct i2c_device_id tsys01_id[] = { { "tsys01" }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, tsys01_id); static const struct of_device_id tsys01_of_match[] = { { .compatible = "meas,tsys01", }, - { }, + { } }; MODULE_DEVICE_TABLE(of, tsys01_of_match); diff --git a/drivers/iio/temperature/tsys02d.c b/drivers/iio/temperature/tsys02d.c index ef34b3c58f26..0cad27205667 100644 --- a/drivers/iio/temperature/tsys02d.c +++ b/drivers/iio/temperature/tsys02d.c @@ -169,7 +169,7 @@ static int tsys02d_probe(struct i2c_client *client) static const struct i2c_device_id tsys02d_id[] = { { "tsys02d" }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, tsys02d_id); diff --git a/drivers/iio/test/iio-test-format.c b/drivers/iio/test/iio-test-format.c index fc67e6b73df7..872dd8582003 100644 --- a/drivers/iio/test/iio-test-format.c +++ b/drivers/iio/test/iio-test-format.c @@ -257,7 +257,7 @@ static struct kunit_case iio_format_test_cases[] = { KUNIT_CASE(iio_test_iio_format_value_fractional_log2), KUNIT_CASE(iio_test_iio_format_value_multiple), KUNIT_CASE(iio_test_iio_format_value_integer_64), - {} + { } }; static struct kunit_suite iio_format_test_suite = { diff --git a/drivers/iio/test/iio-test-gts.c b/drivers/iio/test/iio-test-gts.c index 1eceec9d477f..11250bc905c9 100644 --- a/drivers/iio/test/iio-test-gts.c +++ b/drivers/iio/test/iio-test-gts.c @@ -499,7 +499,7 @@ static struct kunit_case iio_gts_test_cases[] = { KUNIT_CASE(test_iio_find_closest_gain_low), KUNIT_CASE(test_iio_gts_total_gain_to_scale), KUNIT_CASE(test_iio_gts_avail_test), - {} + { } }; static struct kunit_suite iio_gts_test_suite = { diff --git a/drivers/iio/test/iio-test-rescale.c b/drivers/iio/test/iio-test-rescale.c index bbc6a2e1c2c1..ac6942cf1e44 100644 --- a/drivers/iio/test/iio-test-rescale.c +++ b/drivers/iio/test/iio-test-rescale.c @@ -704,7 +704,7 @@ static void iio_rescale_test_offset(struct kunit *test) static struct kunit_case iio_rescale_test_cases[] = { KUNIT_CASE_PARAM(iio_rescale_test_scale, iio_rescale_scale_gen_params), KUNIT_CASE_PARAM(iio_rescale_test_offset, iio_rescale_offset_gen_params), - {} + { } }; static struct kunit_suite iio_rescale_test_suite = { diff --git a/drivers/iio/trigger/stm32-lptimer-trigger.c b/drivers/iio/trigger/stm32-lptimer-trigger.c index 3dcc8d2fe093..2505ace440b4 100644 --- a/drivers/iio/trigger/stm32-lptimer-trigger.c +++ b/drivers/iio/trigger/stm32-lptimer-trigger.c @@ -133,7 +133,7 @@ static int stm32_lptim_trigger_probe(struct platform_device *pdev) static const struct of_device_id stm32_lptim_trig_of_match[] = { { .compatible = "st,stm32-lptimer-trigger", .data = &stm32mp15_lptim_cfg }, { .compatible = "st,stm32mp25-lptimer-trigger", .data = &stm32mp25_lptim_cfg}, - {}, + { } }; MODULE_DEVICE_TABLE(of, stm32_lptim_trig_of_match); diff --git a/drivers/iio/trigger/stm32-timer-trigger.c b/drivers/iio/trigger/stm32-timer-trigger.c index e41cb741253b..925b864facca 100644 --- a/drivers/iio/trigger/stm32-timer-trigger.c +++ b/drivers/iio/trigger/stm32-timer-trigger.c @@ -711,7 +711,7 @@ static const struct iio_chan_spec_ext_info stm32_trigger_count_info[] = { IIO_ENUM_AVAILABLE("enable_mode", IIO_SHARED_BY_TYPE, &stm32_enable_mode_enum), IIO_ENUM("trigger_mode", IIO_SEPARATE, &stm32_trigger_mode_enum), IIO_ENUM_AVAILABLE("trigger_mode", IIO_SHARED_BY_TYPE, &stm32_trigger_mode_enum), - {} + { } }; static const struct iio_chan_spec stm32_trigger_channel = { @@ -921,7 +921,7 @@ static const struct of_device_id stm32_trig_of_match[] = { .compatible = "st,stm32mp25-timer-trigger", .data = (void *)&stm32mp25_timer_trg_cfg, }, - { /* end node */ }, + { } }; MODULE_DEVICE_TABLE(of, stm32_trig_of_match); diff --git a/drivers/staging/iio/accel/adis16203.c b/drivers/staging/iio/accel/adis16203.c index c1c73308800c..830ff38fda92 100644 --- a/drivers/staging/iio/accel/adis16203.c +++ b/drivers/staging/iio/accel/adis16203.c @@ -294,7 +294,7 @@ static int adis16203_probe(struct spi_device *spi) static const struct of_device_id adis16203_of_match[] = { { .compatible = "adi,adis16203" }, - { }, + { } }; MODULE_DEVICE_TABLE(of, adis16203_of_match); diff --git a/drivers/staging/iio/adc/ad7816.c b/drivers/staging/iio/adc/ad7816.c index 6c14d7bcdd67..1368c3ea5d18 100644 --- a/drivers/staging/iio/adc/ad7816.c +++ b/drivers/staging/iio/adc/ad7816.c @@ -431,7 +431,7 @@ static const struct spi_device_id ad7816_id[] = { { "ad7816", ID_AD7816 }, { "ad7817", ID_AD7817 }, { "ad7818", ID_AD7818 }, - {} + { } }; MODULE_DEVICE_TABLE(spi, ad7816_id); diff --git a/drivers/staging/iio/addac/adt7316-i2c.c b/drivers/staging/iio/addac/adt7316-i2c.c index e6ad088636f6..f45968ef94ea 100644 --- a/drivers/staging/iio/addac/adt7316-i2c.c +++ b/drivers/staging/iio/addac/adt7316-i2c.c @@ -127,7 +127,7 @@ static const struct of_device_id adt7316_of_match[] = { { .compatible = "adi,adt7516" }, { .compatible = "adi,adt7517" }, { .compatible = "adi,adt7519" }, - { }, + { } }; MODULE_DEVICE_TABLE(of, adt7316_of_match); diff --git a/drivers/staging/iio/frequency/ad9832.c b/drivers/staging/iio/frequency/ad9832.c index 1bf23384d28b..738982e2713f 100644 --- a/drivers/staging/iio/frequency/ad9832.c +++ b/drivers/staging/iio/frequency/ad9832.c @@ -412,7 +412,7 @@ MODULE_DEVICE_TABLE(of, ad9832_of_match); static const struct spi_device_id ad9832_id[] = { {"ad9832", 0}, {"ad9835", 0}, - {} + { } }; MODULE_DEVICE_TABLE(spi, ad9832_id); diff --git a/drivers/staging/iio/frequency/ad9834.c b/drivers/staging/iio/frequency/ad9834.c index 50413da2aa65..0038eb234d40 100644 --- a/drivers/staging/iio/frequency/ad9834.c +++ b/drivers/staging/iio/frequency/ad9834.c @@ -479,7 +479,7 @@ static const struct spi_device_id ad9834_id[] = { {"ad9834", ID_AD9834}, {"ad9837", ID_AD9837}, {"ad9838", ID_AD9838}, - {} + { } }; MODULE_DEVICE_TABLE(spi, ad9834_id); @@ -488,7 +488,7 @@ static const struct of_device_id ad9834_of_match[] = { {.compatible = "adi,ad9834"}, {.compatible = "adi,ad9837"}, {.compatible = "adi,ad9838"}, - {} + { } }; MODULE_DEVICE_TABLE(of, ad9834_of_match); diff --git a/drivers/staging/iio/impedance-analyzer/ad5933.c b/drivers/staging/iio/impedance-analyzer/ad5933.c index 5aaa43e94c52..6b3e2319e791 100644 --- a/drivers/staging/iio/impedance-analyzer/ad5933.c +++ b/drivers/staging/iio/impedance-analyzer/ad5933.c @@ -728,7 +728,7 @@ static int ad5933_probe(struct i2c_client *client) static const struct i2c_device_id ad5933_id[] = { { "ad5933" }, { "ad5934" }, - {} + { } }; MODULE_DEVICE_TABLE(i2c, ad5933_id); @@ -736,7 +736,7 @@ MODULE_DEVICE_TABLE(i2c, ad5933_id); static const struct of_device_id ad5933_of_match[] = { { .compatible = "adi,ad5933" }, { .compatible = "adi,ad5934" }, - { }, + { } }; MODULE_DEVICE_TABLE(of, ad5933_of_match); diff --git a/tools/iio/iio_generic_buffer.c b/tools/iio/iio_generic_buffer.c index 9ef5ee087eda..bc82bb6a7a2a 100644 --- a/tools/iio/iio_generic_buffer.c +++ b/tools/iio/iio_generic_buffer.c @@ -335,7 +335,7 @@ static const struct option longopts[] = { { "device-num", 1, 0, 'N' }, { "trigger-name", 1, 0, 't' }, { "trigger-num", 1, 0, 'T' }, - { }, + { } }; int main(int argc, char **argv) -- cgit v1.2.3 From 6f18d174b73d0ceeaa341f46c0986436b3aefc9a Mon Sep 17 00:00:00 2001 From: Sumit Kumar Date: Wed, 9 Apr 2025 16:17:43 +0530 Subject: bus: mhi: ep: Update read pointer only after buffer is written Inside mhi_ep_ring_add_element, the read pointer (rd_offset) is updated before the buffer is written, potentially causing race conditions where the host sees an updated read pointer before the buffer is actually written. Updating rd_offset prematurely can lead to the host accessing an uninitialized or incomplete element, resulting in data corruption. Invoke the buffer write before updating rd_offset to ensure the element is fully written before signaling its availability. Fixes: bbdcba57a1a2 ("bus: mhi: ep: Add support for ring management") cc: stable@vger.kernel.org Co-developed-by: Youssef Samir Signed-off-by: Youssef Samir Signed-off-by: Sumit Kumar Reviewed-by: Jeff Hugo Reviewed-by: Krishna Chaitanya Chundru Reviewed-by: Manivannan Sadhasivam Link: https://patch.msgid.link/20250409-rp_fix-v1-1-8cf1fa22ed28@quicinc.com Signed-off-by: Manivannan Sadhasivam --- drivers/bus/mhi/ep/ring.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/drivers/bus/mhi/ep/ring.c b/drivers/bus/mhi/ep/ring.c index aeb53b2c34a8..26357ee68dee 100644 --- a/drivers/bus/mhi/ep/ring.c +++ b/drivers/bus/mhi/ep/ring.c @@ -131,19 +131,23 @@ int mhi_ep_ring_add_element(struct mhi_ep_ring *ring, struct mhi_ring_element *e } old_offset = ring->rd_offset; - mhi_ep_ring_inc_index(ring); dev_dbg(dev, "Adding an element to ring at offset (%zu)\n", ring->rd_offset); + buf_info.host_addr = ring->rbase + (old_offset * sizeof(*el)); + buf_info.dev_addr = el; + buf_info.size = sizeof(*el); + + ret = mhi_cntrl->write_sync(mhi_cntrl, &buf_info); + if (ret) + return ret; + + mhi_ep_ring_inc_index(ring); /* Update rp in ring context */ rp = cpu_to_le64(ring->rd_offset * sizeof(*el) + ring->rbase); memcpy_toio((void __iomem *) &ring->ring_ctx->generic.rp, &rp, sizeof(u64)); - buf_info.host_addr = ring->rbase + (old_offset * sizeof(*el)); - buf_info.dev_addr = el; - buf_info.size = sizeof(*el); - - return mhi_cntrl->write_sync(mhi_cntrl, &buf_info); + return ret; } void mhi_ep_ring_init(struct mhi_ep_ring *ring, enum mhi_ep_ring_type type, u32 id) -- cgit v1.2.3 From 99b11851e5ed599c626d26834e57e3df2e31fffd Mon Sep 17 00:00:00 2001 From: Peter Colberg Date: Mon, 17 Mar 2025 17:01:36 -0400 Subject: fpga: m10bmc-sec: change contact for secure update driver Change the maintainer for the Intel MAX10 BMC Secure Update driver from Peter Colberg to Matthew Gerlach and update the ABI documentation. Signed-off-by: Peter Colberg Acked-by: Matthew Gerlach Acked-by: Xu Yilun Link: https://lore.kernel.org/r/20250317210136.72816-1-peter.colberg@altera.com Signed-off-by: Xu Yilun --- Documentation/ABI/testing/sysfs-driver-intel-m10-bmc | 4 ++-- .../ABI/testing/sysfs-driver-intel-m10-bmc-sec-update | 14 +++++++------- MAINTAINERS | 2 +- 3 files changed, 10 insertions(+), 10 deletions(-) diff --git a/Documentation/ABI/testing/sysfs-driver-intel-m10-bmc b/Documentation/ABI/testing/sysfs-driver-intel-m10-bmc index a6e400364932..faeae8fedb14 100644 --- a/Documentation/ABI/testing/sysfs-driver-intel-m10-bmc +++ b/Documentation/ABI/testing/sysfs-driver-intel-m10-bmc @@ -17,7 +17,7 @@ Description: Read only. Returns the firmware version of Intel MAX10 What: /sys/bus/.../drivers/intel-m10-bmc/.../mac_address Date: January 2021 KernelVersion: 5.12 -Contact: Peter Colberg +Contact: Matthew Gerlach Description: Read only. Returns the first MAC address in a block of sequential MAC addresses assigned to the board that is managed by the Intel MAX10 BMC. It is stored in @@ -28,7 +28,7 @@ Description: Read only. Returns the first MAC address in a block What: /sys/bus/.../drivers/intel-m10-bmc/.../mac_count Date: January 2021 KernelVersion: 5.12 -Contact: Peter Colberg +Contact: Matthew Gerlach Description: Read only. Returns the number of sequential MAC addresses assigned to the board managed by the Intel MAX10 BMC. This value is stored in FLASH and is mirrored diff --git a/Documentation/ABI/testing/sysfs-driver-intel-m10-bmc-sec-update b/Documentation/ABI/testing/sysfs-driver-intel-m10-bmc-sec-update index c69fd3894eb4..3a6ca780c75c 100644 --- a/Documentation/ABI/testing/sysfs-driver-intel-m10-bmc-sec-update +++ b/Documentation/ABI/testing/sysfs-driver-intel-m10-bmc-sec-update @@ -1,7 +1,7 @@ What: /sys/bus/platform/drivers/intel-m10bmc-sec-update/.../security/sr_root_entry_hash Date: Sep 2022 KernelVersion: 5.20 -Contact: Peter Colberg +Contact: Matthew Gerlach Description: Read only. Returns the root entry hash for the static region if one is programmed, else it returns the string: "hash not programmed". This file is only @@ -11,7 +11,7 @@ Description: Read only. Returns the root entry hash for the static What: /sys/bus/platform/drivers/intel-m10bmc-sec-update/.../security/pr_root_entry_hash Date: Sep 2022 KernelVersion: 5.20 -Contact: Peter Colberg +Contact: Matthew Gerlach Description: Read only. Returns the root entry hash for the partial reconfiguration region if one is programmed, else it returns the string: "hash not programmed". This file @@ -21,7 +21,7 @@ Description: Read only. Returns the root entry hash for the partial What: /sys/bus/platform/drivers/intel-m10bmc-sec-update/.../security/bmc_root_entry_hash Date: Sep 2022 KernelVersion: 5.20 -Contact: Peter Colberg +Contact: Matthew Gerlach Description: Read only. Returns the root entry hash for the BMC image if one is programmed, else it returns the string: "hash not programmed". This file is only visible if the @@ -31,7 +31,7 @@ Description: Read only. Returns the root entry hash for the BMC image What: /sys/bus/platform/drivers/intel-m10bmc-sec-update/.../security/sr_canceled_csks Date: Sep 2022 KernelVersion: 5.20 -Contact: Peter Colberg +Contact: Matthew Gerlach Description: Read only. Returns a list of indices for canceled code signing keys for the static region. The standard bitmap list format is used (e.g. "1,2-6,9"). @@ -39,7 +39,7 @@ Description: Read only. Returns a list of indices for canceled code What: /sys/bus/platform/drivers/intel-m10bmc-sec-update/.../security/pr_canceled_csks Date: Sep 2022 KernelVersion: 5.20 -Contact: Peter Colberg +Contact: Matthew Gerlach Description: Read only. Returns a list of indices for canceled code signing keys for the partial reconfiguration region. The standard bitmap list format is used (e.g. "1,2-6,9"). @@ -47,7 +47,7 @@ Description: Read only. Returns a list of indices for canceled code What: /sys/bus/platform/drivers/intel-m10bmc-sec-update/.../security/bmc_canceled_csks Date: Sep 2022 KernelVersion: 5.20 -Contact: Peter Colberg +Contact: Matthew Gerlach Description: Read only. Returns a list of indices for canceled code signing keys for the BMC. The standard bitmap list format is used (e.g. "1,2-6,9"). @@ -55,7 +55,7 @@ Description: Read only. Returns a list of indices for canceled code What: /sys/bus/platform/drivers/intel-m10bmc-sec-update/.../security/flash_count Date: Sep 2022 KernelVersion: 5.20 -Contact: Peter Colberg +Contact: Matthew Gerlach Description: Read only. Returns number of times the secure update staging area has been flashed. Format: "%u". diff --git a/MAINTAINERS b/MAINTAINERS index 96b827049501..256a7b546fe2 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -12109,7 +12109,7 @@ F: drivers/mfd/intel-m10-bmc* F: include/linux/mfd/intel-m10-bmc.h INTEL MAX10 BMC SECURE UPDATES -M: Peter Colberg +M: Matthew Gerlach L: linux-fpga@vger.kernel.org S: Maintained F: Documentation/ABI/testing/sysfs-driver-intel-m10-bmc-sec-update -- cgit v1.2.3 From cb0dde4d058b1fe7fc80d851b16c6687f461214b Mon Sep 17 00:00:00 2001 From: Ian Abbott Date: Tue, 15 Apr 2025 12:35:56 +0100 Subject: comedi: ni_pcidio: Do not bother filling buffer with 0xaa byte values On buffer change, the driver informs the mite module about the buffer change and then it fills the buffer with byte value `0xaa` using `memset()`. Do not bother filling the buffer. None of the other Comedi drivers do this. The aim is to get rid of the `prealloc_buf` member of `struct comedi_async` (which is from a `vmap()` covering the whole buffer in those Comedi drivers that do not use DMA), and use the per-buffer-page addresses from the `virt_addr` member of `struct comedi_buf_page` to access the buffer contents instead. (If necessary, we could add a `comedi_buf_memset()` function to fill the buffer with a byte value, but it's not worth it in this case.) Signed-off-by: Ian Abbott Link: https://lore.kernel.org/r/20250415114008.5977-2-abbotti@mev.co.uk Signed-off-by: Greg Kroah-Hartman --- drivers/comedi/drivers/ni_pcidio.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/comedi/drivers/ni_pcidio.c b/drivers/comedi/drivers/ni_pcidio.c index 2d58e83420e8..2c7bb9c1ea5b 100644 --- a/drivers/comedi/drivers/ni_pcidio.c +++ b/drivers/comedi/drivers/ni_pcidio.c @@ -747,8 +747,6 @@ static int ni_pcidio_change(struct comedi_device *dev, if (ret < 0) return ret; - memset(s->async->prealloc_buf, 0xaa, s->async->prealloc_bufsz); - return 0; } -- cgit v1.2.3 From e7199b6b591eead7dc516a639a5b618f1e3cd207 Mon Sep 17 00:00:00 2001 From: Ian Abbott Date: Tue, 15 Apr 2025 12:35:57 +0100 Subject: comedi: access buffer data page-by-page The aim is to get rid of the `prealloc_buf` member of `struct comedi_async` and access the buffer contents on a page-by-page basis using the addresses in the `virt_addr` member of `struct comedi_buf_page`. This will allow us to eliminate a `vmap()` that maps the whole buffer. Since the buffer pages have non-consecutive `virt_addr` addresses in virtual memory (except for drivers using DMA), change the loops that access buffer data to access it page-by-page. Signed-off-by: Ian Abbott Link: https://lore.kernel.org/r/20250415114008.5977-3-abbotti@mev.co.uk Signed-off-by: Greg Kroah-Hartman --- drivers/comedi/comedi_buf.c | 67 +++++++++++++++++++++----------------- drivers/comedi/comedi_fops.c | 77 +++++++++++++++++++++++++++++++++----------- 2 files changed, 96 insertions(+), 48 deletions(-) diff --git a/drivers/comedi/comedi_buf.c b/drivers/comedi/comedi_buf.c index 393966c09740..0d956dd40a2b 100644 --- a/drivers/comedi/comedi_buf.c +++ b/drivers/comedi/comedi_buf.c @@ -365,6 +365,7 @@ static unsigned int comedi_buf_munge(struct comedi_subdevice *s, unsigned int num_bytes) { struct comedi_async *async = s->async; + struct comedi_buf_page *buf_page_list = async->buf_map->page_list; unsigned int count = 0; const unsigned int num_sample_bytes = comedi_bytes_per_sample(s); @@ -376,15 +377,16 @@ static unsigned int comedi_buf_munge(struct comedi_subdevice *s, /* don't munge partial samples */ num_bytes -= num_bytes % num_sample_bytes; while (count < num_bytes) { - int block_size = num_bytes - count; - unsigned int buf_end; - - buf_end = async->prealloc_bufsz - async->munge_ptr; - if (block_size > buf_end) - block_size = buf_end; + /* + * Do not munge beyond page boundary. + * Note: prealloc_bufsz is a multiple of PAGE_SIZE. + */ + unsigned int page = async->munge_ptr >> PAGE_SHIFT; + unsigned int offset = offset_in_page(async->munge_ptr); + unsigned int block_size = + min(num_bytes - count, PAGE_SIZE - offset); - s->munge(s->device, s, - async->prealloc_buf + async->munge_ptr, + s->munge(s->device, s, buf_page_list[page].virt_addr + offset, block_size, async->munge_chan); /* @@ -397,7 +399,8 @@ static unsigned int comedi_buf_munge(struct comedi_subdevice *s, async->munge_chan %= async->cmd.chanlist_len; async->munge_count += block_size; async->munge_ptr += block_size; - async->munge_ptr %= async->prealloc_bufsz; + if (async->munge_ptr == async->prealloc_bufsz) + async->munge_ptr = 0; count += block_size; } @@ -558,46 +561,52 @@ static void comedi_buf_memcpy_to(struct comedi_subdevice *s, const void *data, unsigned int num_bytes) { struct comedi_async *async = s->async; + struct comedi_buf_page *buf_page_list = async->buf_map->page_list; unsigned int write_ptr = async->buf_write_ptr; while (num_bytes) { - unsigned int block_size; - - if (write_ptr + num_bytes > async->prealloc_bufsz) - block_size = async->prealloc_bufsz - write_ptr; - else - block_size = num_bytes; + /* + * Do not copy beyond page boundary. + * Note: prealloc_bufsz is a multiple of PAGE_SIZE. + */ + unsigned int page = write_ptr >> PAGE_SHIFT; + unsigned int offset = offset_in_page(write_ptr); + unsigned int block_size = min(num_bytes, PAGE_SIZE - offset); - memcpy(async->prealloc_buf + write_ptr, data, block_size); + memcpy(buf_page_list[page].virt_addr + offset, + data, block_size); data += block_size; num_bytes -= block_size; - - write_ptr = 0; + write_ptr += block_size; + if (write_ptr == async->prealloc_bufsz) + write_ptr = 0; } } static void comedi_buf_memcpy_from(struct comedi_subdevice *s, void *dest, unsigned int nbytes) { - void *src; struct comedi_async *async = s->async; + struct comedi_buf_page *buf_page_list = async->buf_map->page_list; unsigned int read_ptr = async->buf_read_ptr; while (nbytes) { - unsigned int block_size; - - src = async->prealloc_buf + read_ptr; - - if (nbytes >= async->prealloc_bufsz - read_ptr) - block_size = async->prealloc_bufsz - read_ptr; - else - block_size = nbytes; + /* + * Do not copy beyond page boundary. + * Note: prealloc_bufsz is a multiple of PAGE_SIZE. + */ + unsigned int page = read_ptr >> PAGE_SHIFT; + unsigned int offset = offset_in_page(read_ptr); + unsigned int block_size = min(nbytes, PAGE_SIZE - offset); - memcpy(dest, src, block_size); + memcpy(dest, buf_page_list[page].virt_addr + offset, + block_size); nbytes -= block_size; dest += block_size; - read_ptr = 0; + read_ptr += block_size; + if (read_ptr == async->prealloc_bufsz) + read_ptr = 0; } } diff --git a/drivers/comedi/comedi_fops.c b/drivers/comedi/comedi_fops.c index b9df9b19d4bd..37cfef36c1ad 100644 --- a/drivers/comedi/comedi_fops.c +++ b/drivers/comedi/comedi_fops.c @@ -2475,6 +2475,62 @@ done: return mask; } +static unsigned int comedi_buf_copy_to_user(struct comedi_subdevice *s, + void __user *dest, unsigned int src_offset, unsigned int n) +{ + struct comedi_buf_map *bm = s->async->buf_map; + struct comedi_buf_page *buf_page_list = bm->page_list; + unsigned int page = src_offset >> PAGE_SHIFT; + unsigned int offset = offset_in_page(src_offset); + + while (n) { + unsigned int copy_amount = min(n, PAGE_SIZE - offset); + unsigned int uncopied; + + uncopied = copy_to_user(dest, buf_page_list[page].virt_addr + + offset, copy_amount); + copy_amount -= uncopied; + n -= copy_amount; + if (uncopied) + break; + + dest += copy_amount; + page++; + if (page == bm->n_pages) + page = 0; /* buffer wraparound */ + offset = 0; + } + return n; +} + +static unsigned int comedi_buf_copy_from_user(struct comedi_subdevice *s, + unsigned int dst_offset, const void __user *src, unsigned int n) +{ + struct comedi_buf_map *bm = s->async->buf_map; + struct comedi_buf_page *buf_page_list = bm->page_list; + unsigned int page = dst_offset >> PAGE_SHIFT; + unsigned int offset = offset_in_page(dst_offset); + + while (n) { + unsigned int copy_amount = min(n, PAGE_SIZE - offset); + unsigned int uncopied; + + uncopied = copy_from_user(buf_page_list[page].virt_addr + + offset, src, copy_amount); + copy_amount -= uncopied; + n -= copy_amount; + if (uncopied) + break; + + src += copy_amount; + page++; + if (page == bm->n_pages) + page = 0; /* buffer wraparound */ + offset = 0; + } + return n; +} + static ssize_t comedi_write(struct file *file, const char __user *buf, size_t nbytes, loff_t *offset) { @@ -2516,7 +2572,6 @@ static ssize_t comedi_write(struct file *file, const char __user *buf, add_wait_queue(&async->wait_head, &wait); while (count == 0 && !retval) { unsigned int runflags; - unsigned int wp, n1, n2; set_current_state(TASK_INTERRUPTIBLE); @@ -2555,14 +2610,7 @@ static ssize_t comedi_write(struct file *file, const char __user *buf, } set_current_state(TASK_RUNNING); - wp = async->buf_write_ptr; - n1 = min(n, async->prealloc_bufsz - wp); - n2 = n - n1; - m = copy_from_user(async->prealloc_buf + wp, buf, n1); - if (m) - m += n2; - else if (n2) - m = copy_from_user(async->prealloc_buf, buf + n1, n2); + m = comedi_buf_copy_from_user(s, async->buf_write_ptr, buf, n); if (m) { n -= m; retval = -EFAULT; @@ -2651,8 +2699,6 @@ static ssize_t comedi_read(struct file *file, char __user *buf, size_t nbytes, add_wait_queue(&async->wait_head, &wait); while (count == 0 && !retval) { - unsigned int rp, n1, n2; - set_current_state(TASK_INTERRUPTIBLE); m = comedi_buf_read_n_available(s); @@ -2689,14 +2735,7 @@ static ssize_t comedi_read(struct file *file, char __user *buf, size_t nbytes, } set_current_state(TASK_RUNNING); - rp = async->buf_read_ptr; - n1 = min(n, async->prealloc_bufsz - rp); - n2 = n - n1; - m = copy_to_user(buf, async->prealloc_buf + rp, n1); - if (m) - m += n2; - else if (n2) - m = copy_to_user(buf + n1, async->prealloc_buf, n2); + m = comedi_buf_copy_to_user(s, buf, async->buf_read_ptr, n); if (m) { n -= m; retval = -EFAULT; -- cgit v1.2.3 From 5117f28a7d78d00a44d03463115a0f295dbbb1ff Mon Sep 17 00:00:00 2001 From: Ian Abbott Date: Tue, 15 Apr 2025 12:35:58 +0100 Subject: comedi: remove the mapping of the Comedi buffer in vmalloc address space Now that all the code that accesses the Comedi buffer data does so page-by-page, using the `virt_addr` member of `struct comedi_buf_page` to point to the data of each page, do not linearly map the buffer into vmalloc address space (pointed to by the `prealloc_buf` member of `struct comedi_async`). That was only done for convenience, but was not done for those drivers that need a DMA coherent buffer, which is allocated in a single chunk. Remove the `prealloc_buf` member as it is no longer used. Signed-off-by: Ian Abbott Link: https://lore.kernel.org/r/20250415114008.5977-4-abbotti@mev.co.uk Signed-off-by: Greg Kroah-Hartman --- drivers/comedi/comedi_buf.c | 45 ++++------------------------------------ include/linux/comedi/comedidev.h | 10 ++------- 2 files changed, 6 insertions(+), 49 deletions(-) diff --git a/drivers/comedi/comedi_buf.c b/drivers/comedi/comedi_buf.c index 0d956dd40a2b..5807007bb3dd 100644 --- a/drivers/comedi/comedi_buf.c +++ b/drivers/comedi/comedi_buf.c @@ -56,13 +56,7 @@ static void __comedi_buf_free(struct comedi_device *dev, struct comedi_buf_map *bm; unsigned long flags; - if (async->prealloc_buf) { - if (s->async_dma_dir == DMA_NONE) - vunmap(async->prealloc_buf); - async->prealloc_buf = NULL; - async->prealloc_bufsz = 0; - } - + async->prealloc_bufsz = 0; spin_lock_irqsave(&s->spin_lock, flags); bm = async->buf_map; async->buf_map = NULL; @@ -141,11 +135,8 @@ static void __comedi_buf_alloc(struct comedi_device *dev, unsigned int n_pages) { struct comedi_async *async = s->async; - struct page **pages = NULL; struct comedi_buf_map *bm; - struct comedi_buf_page *buf; unsigned long flags; - unsigned int i; if (!IS_ENABLED(CONFIG_HAS_DMA) && s->async_dma_dir != DMA_NONE) { dev_err(dev->class_dev, @@ -160,30 +151,7 @@ static void __comedi_buf_alloc(struct comedi_device *dev, spin_lock_irqsave(&s->spin_lock, flags); async->buf_map = bm; spin_unlock_irqrestore(&s->spin_lock, flags); - - if (bm->dma_dir != DMA_NONE) { - /* - * DMA buffer was allocated as a single block. - * Address is in page_list[0]. - */ - buf = &bm->page_list[0]; - async->prealloc_buf = buf->virt_addr; - } else { - pages = vmalloc(sizeof(struct page *) * n_pages); - if (!pages) - return; - - for (i = 0; i < n_pages; i++) { - buf = &bm->page_list[i]; - pages[i] = virt_to_page(buf->virt_addr); - } - - /* vmap the pages to prealloc_buf */ - async->prealloc_buf = vmap(pages, n_pages, VM_MAP, - COMEDI_PAGE_PROTECTION); - - vfree(pages); - } + async->prealloc_bufsz = n_pages << PAGE_SHIFT; } void comedi_buf_map_get(struct comedi_buf_map *bm) @@ -264,7 +232,7 @@ int comedi_buf_alloc(struct comedi_device *dev, struct comedi_subdevice *s, new_size = (new_size + PAGE_SIZE - 1) & PAGE_MASK; /* if no change is required, do nothing */ - if (async->prealloc_buf && async->prealloc_bufsz == new_size) + if (async->prealloc_bufsz == new_size) return 0; /* deallocate old buffer */ @@ -275,14 +243,9 @@ int comedi_buf_alloc(struct comedi_device *dev, struct comedi_subdevice *s, unsigned int n_pages = new_size >> PAGE_SHIFT; __comedi_buf_alloc(dev, s, n_pages); - - if (!async->prealloc_buf) { - /* allocation failed */ - __comedi_buf_free(dev, s); + if (!async->prealloc_bufsz) return -ENOMEM; - } } - async->prealloc_bufsz = new_size; return 0; } diff --git a/include/linux/comedi/comedidev.h b/include/linux/comedi/comedidev.h index c08416a7364b..4cb0400ad616 100644 --- a/include/linux/comedi/comedidev.h +++ b/include/linux/comedi/comedidev.h @@ -234,16 +234,12 @@ struct comedi_buf_page { * * A COMEDI data buffer is allocated as individual pages, either in * conventional memory or DMA coherent memory, depending on the attached, - * low-level hardware device. (The buffer pages also get mapped into the - * kernel's contiguous virtual address space pointed to by the 'prealloc_buf' - * member of &struct comedi_async.) + * low-level hardware device. * * The buffer is normally freed when the COMEDI device is detached from the * low-level driver (which may happen due to device removal), but if it happens * to be mmapped at the time, the pages cannot be freed until the buffer has - * been munmapped. That is what the reference counter is for. (The virtual - * address space pointed by 'prealloc_buf' is freed when the COMEDI device is - * detached.) + * been munmapped. That is what the reference counter is for. */ struct comedi_buf_map { struct device *dma_hw_dev; @@ -255,7 +251,6 @@ struct comedi_buf_map { /** * struct comedi_async - Control data for asynchronous COMEDI commands - * @prealloc_buf: Kernel virtual address of allocated acquisition buffer. * @prealloc_bufsz: Buffer size (in bytes). * @buf_map: Map of buffer pages. * @max_bufsize: Maximum allowed buffer size (in bytes). @@ -344,7 +339,6 @@ struct comedi_buf_map { * less than or equal to UINT_MAX). */ struct comedi_async { - void *prealloc_buf; unsigned int prealloc_bufsz; struct comedi_buf_map *buf_map; unsigned int max_bufsize; -- cgit v1.2.3 From fd1575e28a325b9b43fb4e182d1ee001b360f040 Mon Sep 17 00:00:00 2001 From: Ian Abbott Date: Tue, 15 Apr 2025 12:35:59 +0100 Subject: comedi: allocate DMA coherent buffer as individual pages Depending on the driver, the acquisition buffer is allocated either from normal memory, or from DMA coherent memory. For normal memory, the buffer is allocated as individual pages, but for DMA coherent memory, it is allocated as a single block. Prior to commit e36472145aa7 ("staging: comedi: use dma_mmap_coherent for DMA-able buffer mmap"), the buffer was allocated as individual pages for DMA coherent memory too, but that was changed to allocate it as a single block to allow `dma_mmap_coherent()` to be used to mmap it, because that requires the pages being mmap'ed to be contiguous. This patch allocates the buffer from DMA coherent memory a page at a time again, and works around the limitation of `dma_mmap_coherent()` by calling it in a loop for each page, with temporarily modified `vm_start` and `vm_end` values in the VMA. (The `vm_pgoff` value is 0.) Cc: Christoph Hellwig Signed-off-by: Ian Abbott Link: https://lore.kernel.org/r/20250415114008.5977-5-abbotti@mev.co.uk Signed-off-by: Greg Kroah-Hartman --- drivers/comedi/comedi_buf.c | 43 ++++++++++++++----------------------------- drivers/comedi/comedi_fops.c | 43 ++++++++++++++++++++++++++++--------------- 2 files changed, 42 insertions(+), 44 deletions(-) diff --git a/drivers/comedi/comedi_buf.c b/drivers/comedi/comedi_buf.c index 5807007bb3dd..002c0e76baff 100644 --- a/drivers/comedi/comedi_buf.c +++ b/drivers/comedi/comedi_buf.c @@ -27,14 +27,12 @@ static void comedi_buf_map_kref_release(struct kref *kref) if (bm->page_list) { if (bm->dma_dir != DMA_NONE) { - /* - * DMA buffer was allocated as a single block. - * Address is in page_list[0]. - */ - buf = &bm->page_list[0]; - dma_free_coherent(bm->dma_hw_dev, - PAGE_SIZE * bm->n_pages, - buf->virt_addr, buf->dma_addr); + for (i = 0; i < bm->n_pages; i++) { + buf = &bm->page_list[i]; + dma_free_coherent(bm->dma_hw_dev, PAGE_SIZE, + buf->virt_addr, + buf->dma_addr); + } } else { for (i = 0; i < bm->n_pages; i++) { buf = &bm->page_list[i]; @@ -88,26 +86,14 @@ comedi_buf_map_alloc(struct comedi_device *dev, enum dma_data_direction dma_dir, goto err; if (bm->dma_dir != DMA_NONE) { - void *virt_addr; - dma_addr_t dma_addr; - - /* - * Currently, the DMA buffer needs to be allocated as a - * single block so that it can be mmap()'ed. - */ - virt_addr = dma_alloc_coherent(bm->dma_hw_dev, - PAGE_SIZE * n_pages, &dma_addr, - GFP_KERNEL); - if (!virt_addr) - goto err; - for (i = 0; i < n_pages; i++) { buf = &bm->page_list[i]; - buf->virt_addr = virt_addr + (i << PAGE_SHIFT); - buf->dma_addr = dma_addr + (i << PAGE_SHIFT); + buf->virt_addr = + dma_alloc_coherent(bm->dma_hw_dev, PAGE_SIZE, + &buf->dma_addr, GFP_KERNEL); + if (!buf->virt_addr) + break; } - - bm->n_pages = i; } else { for (i = 0; i < n_pages; i++) { buf = &bm->page_list[i]; @@ -117,11 +103,10 @@ comedi_buf_map_alloc(struct comedi_device *dev, enum dma_data_direction dma_dir, SetPageReserved(virt_to_page(buf->virt_addr)); } - - bm->n_pages = i; - if (i < n_pages) - goto err; } + bm->n_pages = i; + if (i < n_pages) + goto err; return bm; diff --git a/drivers/comedi/comedi_fops.c b/drivers/comedi/comedi_fops.c index 37cfef36c1ad..3383a7ce27ff 100644 --- a/drivers/comedi/comedi_fops.c +++ b/drivers/comedi/comedi_fops.c @@ -2387,13 +2387,27 @@ static int comedi_mmap(struct file *file, struct vm_area_struct *vma) goto done; } if (bm->dma_dir != DMA_NONE) { + unsigned long vm_start = vma->vm_start; + unsigned long vm_end = vma->vm_end; + /* - * DMA buffer was allocated as a single block. - * Address is in page_list[0]. + * Buffer pages are not contiguous, so temporarily modify VMA + * start and end addresses for each buffer page. */ - buf = &bm->page_list[0]; - retval = dma_mmap_coherent(bm->dma_hw_dev, vma, buf->virt_addr, - buf->dma_addr, n_pages * PAGE_SIZE); + for (i = 0; i < n_pages; ++i) { + buf = &bm->page_list[i]; + vma->vm_start = start; + vma->vm_end = start + PAGE_SIZE; + retval = dma_mmap_coherent(bm->dma_hw_dev, vma, + buf->virt_addr, + buf->dma_addr, PAGE_SIZE); + if (retval) + break; + + start += PAGE_SIZE; + } + vma->vm_start = vm_start; + vma->vm_end = vm_end; } else { for (i = 0; i < n_pages; ++i) { unsigned long pfn; @@ -2407,19 +2421,18 @@ static int comedi_mmap(struct file *file, struct vm_area_struct *vma) start += PAGE_SIZE; } + } #ifdef CONFIG_MMU - /* - * Leaving behind a partial mapping of a buffer we're about to - * drop is unsafe, see remap_pfn_range_notrack(). - * We need to zap the range here ourselves instead of relying - * on the automatic zapping in remap_pfn_range() because we call - * remap_pfn_range() in a loop. - */ - if (retval) - zap_vma_ptes(vma, vma->vm_start, size); + /* + * Leaving behind a partial mapping of a buffer we're about to drop is + * unsafe, see remap_pfn_range_notrack(). We need to zap the range + * here ourselves instead of relying on the automatic zapping in + * remap_pfn_range() because we call remap_pfn_range() in a loop. + */ + if (retval) + zap_vma_ptes(vma, vma->vm_start, size); #endif - } if (retval == 0) { vma->vm_ops = &comedi_vm_ops; -- cgit v1.2.3 From 2a87a55f2281a1096d9e77ac6309b9128c107d97 Mon Sep 17 00:00:00 2001 From: "Jiri Slaby (SUSE)" Date: Tue, 15 Apr 2025 12:47:34 +0200 Subject: irqdomain: cdx: Switch to of_fwnode_handle() of_node_to_fwnode() is irqdomain's reimplementation of the "officially" defined of_fwnode_handle(). The former is in the process of being removed, so use the latter instead. Signed-off-by: Jiri Slaby (SUSE) Cc: Nipun Gupta Cc: Nikhil Agarwal Acked-by: Nipun Gupta Link: https://lore.kernel.org/r/20250415104734.106849-1-jirislaby@kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/cdx/cdx_msi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/cdx/cdx_msi.c b/drivers/cdx/cdx_msi.c index 06d723978232..3388a5d1462c 100644 --- a/drivers/cdx/cdx_msi.c +++ b/drivers/cdx/cdx_msi.c @@ -165,7 +165,7 @@ struct irq_domain *cdx_msi_domain_init(struct device *dev) struct device_node *parent_node; struct irq_domain *parent; - fwnode_handle = of_node_to_fwnode(np); + fwnode_handle = of_fwnode_handle(np); parent_node = of_parse_phandle(np, "msi-map", 1); if (!parent_node) { @@ -173,7 +173,7 @@ struct irq_domain *cdx_msi_domain_init(struct device *dev) return NULL; } - parent = irq_find_matching_fwnode(of_node_to_fwnode(parent_node), DOMAIN_BUS_NEXUS); + parent = irq_find_matching_fwnode(of_fwnode_handle(parent_node), DOMAIN_BUS_NEXUS); if (!parent || !msi_get_domain_info(parent)) { dev_err(dev, "unable to locate ITS domain\n"); return NULL; -- cgit v1.2.3 From dbc8c84d5c2e200c79393c17896bdc65e6daef30 Mon Sep 17 00:00:00 2001 From: "Dr. David Alan Gilbert" Date: Sun, 20 Apr 2025 15:57:39 +0100 Subject: misc: rtsx: Remove deadcode The last uses of rtsx_ms_power_off_card3v3() and rtsx_sd_power_off_card3v3() were removed by 2019's commit bede03a579b3 ("misc: rtsx: Enable OCP for rts522a rts524a rts525a rts5260") The last use of rtsx_pci_transfer_data() was removed by 2024's commit d0f459259c13 ("memstick: rtsx_pci_ms: Remove Realtek PCI memstick driver") Remove them. Signed-off-by: Dr. David Alan Gilbert Link: https://lore.kernel.org/r/20250420145739.58337-1-linux@treblig.org Signed-off-by: Greg Kroah-Hartman --- drivers/misc/cardreader/rtsx_pcr.c | 46 -------------------------------------- drivers/misc/cardreader/rtsx_pcr.h | 2 -- include/linux/rtsx_pci.h | 2 -- 3 files changed, 50 deletions(-) diff --git a/drivers/misc/cardreader/rtsx_pcr.c b/drivers/misc/cardreader/rtsx_pcr.c index be3d4e0e50cc..a7b066c48740 100644 --- a/drivers/misc/cardreader/rtsx_pcr.c +++ b/drivers/misc/cardreader/rtsx_pcr.c @@ -420,25 +420,6 @@ static void rtsx_pci_add_sg_tbl(struct rtsx_pcr *pcr, pcr->sgi++; } -int rtsx_pci_transfer_data(struct rtsx_pcr *pcr, struct scatterlist *sglist, - int num_sg, bool read, int timeout) -{ - int err = 0, count; - - pcr_dbg(pcr, "--> %s: num_sg = %d\n", __func__, num_sg); - count = rtsx_pci_dma_map_sg(pcr, sglist, num_sg, read); - if (count < 1) - return -EINVAL; - pcr_dbg(pcr, "DMA mapping count: %d\n", count); - - err = rtsx_pci_dma_transfer(pcr, sglist, count, read, timeout); - - rtsx_pci_dma_unmap_sg(pcr, sglist, num_sg, read); - - return err; -} -EXPORT_SYMBOL_GPL(rtsx_pci_transfer_data); - int rtsx_pci_dma_map_sg(struct rtsx_pcr *pcr, struct scatterlist *sglist, int num_sg, bool read) { @@ -1197,33 +1178,6 @@ void rtsx_pci_disable_oobs_polling(struct rtsx_pcr *pcr) } -int rtsx_sd_power_off_card3v3(struct rtsx_pcr *pcr) -{ - rtsx_pci_write_register(pcr, CARD_CLK_EN, SD_CLK_EN | - MS_CLK_EN | SD40_CLK_EN, 0); - rtsx_pci_write_register(pcr, CARD_OE, SD_OUTPUT_EN, 0); - rtsx_pci_card_power_off(pcr, RTSX_SD_CARD); - - msleep(50); - - rtsx_pci_card_pull_ctl_disable(pcr, RTSX_SD_CARD); - - return 0; -} - -int rtsx_ms_power_off_card3v3(struct rtsx_pcr *pcr) -{ - rtsx_pci_write_register(pcr, CARD_CLK_EN, SD_CLK_EN | - MS_CLK_EN | SD40_CLK_EN, 0); - - rtsx_pci_card_pull_ctl_disable(pcr, RTSX_MS_CARD); - - rtsx_pci_write_register(pcr, CARD_OE, MS_OUTPUT_EN, 0); - rtsx_pci_card_power_off(pcr, RTSX_MS_CARD); - - return 0; -} - static int rtsx_pci_init_hw(struct rtsx_pcr *pcr) { struct pci_dev *pdev = pcr->pci; diff --git a/drivers/misc/cardreader/rtsx_pcr.h b/drivers/misc/cardreader/rtsx_pcr.h index 9215d66de00c..8e5951b61143 100644 --- a/drivers/misc/cardreader/rtsx_pcr.h +++ b/drivers/misc/cardreader/rtsx_pcr.h @@ -127,7 +127,5 @@ int rtsx_pci_get_ocpstat(struct rtsx_pcr *pcr, u8 *val); void rtsx_pci_clear_ocpstat(struct rtsx_pcr *pcr); void rtsx_pci_enable_oobs_polling(struct rtsx_pcr *pcr); void rtsx_pci_disable_oobs_polling(struct rtsx_pcr *pcr); -int rtsx_sd_power_off_card3v3(struct rtsx_pcr *pcr); -int rtsx_ms_power_off_card3v3(struct rtsx_pcr *pcr); #endif diff --git a/include/linux/rtsx_pci.h b/include/linux/rtsx_pci.h index 4612ef09a0c7..3b4c36705a9b 100644 --- a/include/linux/rtsx_pci.h +++ b/include/linux/rtsx_pci.h @@ -1312,8 +1312,6 @@ void rtsx_pci_add_cmd(struct rtsx_pcr *pcr, u8 cmd_type, u16 reg_addr, u8 mask, u8 data); void rtsx_pci_send_cmd_no_wait(struct rtsx_pcr *pcr); int rtsx_pci_send_cmd(struct rtsx_pcr *pcr, int timeout); -int rtsx_pci_transfer_data(struct rtsx_pcr *pcr, struct scatterlist *sglist, - int num_sg, bool read, int timeout); int rtsx_pci_dma_map_sg(struct rtsx_pcr *pcr, struct scatterlist *sglist, int num_sg, bool read); void rtsx_pci_dma_unmap_sg(struct rtsx_pcr *pcr, struct scatterlist *sglist, -- cgit v1.2.3 From 6813fc8d0d235a3966de23ec2b82bfe3f3aa52bd Mon Sep 17 00:00:00 2001 From: Philipp Stanner Date: Thu, 17 Apr 2025 11:15:32 +0200 Subject: misc: cardreader: Use non-hybrid PCI devres API cardreader enables its PCI device with pcim_enable_device(). This, implicitly, switches the function pci_request_regions() into managed mode, where it becomes a devres function. The PCI subsystem wants to remove this hybrid nature from its interfaces. To do so, users of the aforementioned combination of functions must be ported to non-hybrid functions. Moreover, since both functions are already managed in this driver, the calls to pci_release_regions() are unnecessary. Remove the calls to pci_release_regions(). Replace the call to sometimes-managed pci_request_regions() with one to the always-managed pcim_request_all_regions(). Signed-off-by: Philipp Stanner Link: https://lore.kernel.org/r/20250417091532.26520-2-phasta@kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/misc/cardreader/alcor_pci.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) diff --git a/drivers/misc/cardreader/alcor_pci.c b/drivers/misc/cardreader/alcor_pci.c index a5549eaf52d0..43f08b0db742 100644 --- a/drivers/misc/cardreader/alcor_pci.c +++ b/drivers/misc/cardreader/alcor_pci.c @@ -121,7 +121,7 @@ static int alcor_pci_probe(struct pci_dev *pdev, priv->cfg = cfg; priv->irq = pdev->irq; - ret = pci_request_regions(pdev, DRV_NAME_ALCOR_PCI); + ret = pcim_request_all_regions(pdev, DRV_NAME_ALCOR_PCI); if (ret) { dev_err(&pdev->dev, "Cannot request region\n"); ret = -ENOMEM; @@ -131,13 +131,13 @@ static int alcor_pci_probe(struct pci_dev *pdev, if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM)) { dev_err(&pdev->dev, "BAR %d is not iomem. Aborting.\n", bar); ret = -ENODEV; - goto error_release_regions; + goto error_free_ida; } priv->iobase = pcim_iomap(pdev, bar, 0); if (!priv->iobase) { ret = -ENOMEM; - goto error_release_regions; + goto error_free_ida; } /* make sure irqs are disabled */ @@ -147,7 +147,7 @@ static int alcor_pci_probe(struct pci_dev *pdev, ret = dma_set_mask_and_coherent(priv->dev, AU6601_SDMA_MASK); if (ret) { dev_err(priv->dev, "Failed to set DMA mask\n"); - goto error_release_regions; + goto error_free_ida; } pci_set_master(pdev); @@ -169,8 +169,6 @@ static int alcor_pci_probe(struct pci_dev *pdev, error_clear_drvdata: pci_clear_master(pdev); pci_set_drvdata(pdev, NULL); -error_release_regions: - pci_release_regions(pdev); error_free_ida: ida_free(&alcor_pci_idr, priv->id); return ret; @@ -186,7 +184,6 @@ static void alcor_pci_remove(struct pci_dev *pdev) ida_free(&alcor_pci_idr, priv->id); - pci_release_regions(pdev); pci_clear_master(pdev); pci_set_drvdata(pdev, NULL); } -- cgit v1.2.3 From 93bb9e5c02c59198e8a0216eb895ceb9e20bb52f Mon Sep 17 00:00:00 2001 From: Philipp Stanner Date: Thu, 17 Apr 2025 11:15:33 +0200 Subject: misc: cardreader: Return -EBUSY if regions are busy cardreader returns -ENOMEM if a PCI region is currently in use ("requested") by another driver. The proper return code for this is -EBUSY. Replace -ENOMEM with -EBUSY. Signed-off-by: Philipp Stanner Link: https://lore.kernel.org/r/20250417091532.26520-3-phasta@kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/misc/cardreader/alcor_pci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/misc/cardreader/alcor_pci.c b/drivers/misc/cardreader/alcor_pci.c index 43f08b0db742..8e7ea2c9142d 100644 --- a/drivers/misc/cardreader/alcor_pci.c +++ b/drivers/misc/cardreader/alcor_pci.c @@ -124,7 +124,7 @@ static int alcor_pci_probe(struct pci_dev *pdev, ret = pcim_request_all_regions(pdev, DRV_NAME_ALCOR_PCI); if (ret) { dev_err(&pdev->dev, "Cannot request region\n"); - ret = -ENOMEM; + ret = -EBUSY; goto error_free_ida; } -- cgit v1.2.3 From d0fd663a0b0a64436a92ef8321de5e9d049b6e04 Mon Sep 17 00:00:00 2001 From: Sasha Levin Date: Mon, 21 Apr 2025 09:59:15 -0400 Subject: git-resolve: add SPDX and copyright line I forgot to include it when I've originally submitted the script. Fixes: 7ae52a3d7f51 ("scripts: Add git-resolve tool for full SHA-1 resolution") Signed-off-by: Sasha Levin Link: https://lore.kernel.org/r/20250421135915.1915062-1-sashal@kernel.org Signed-off-by: Greg Kroah-Hartman --- scripts/git-resolve.sh | 2 ++ 1 file changed, 2 insertions(+) diff --git a/scripts/git-resolve.sh b/scripts/git-resolve.sh index 204a8c9bd4ea..e9b5940c0f28 100755 --- a/scripts/git-resolve.sh +++ b/scripts/git-resolve.sh @@ -1,4 +1,6 @@ #!/bin/bash +# SPDX-License-Identifier: GPL-2.0 +# (c) 2025, Sasha Levin usage() { echo "Usage: $(basename "$0") [--selftest] [--force] [commit-subject]" -- cgit v1.2.3 From 31b636d2c41613e3bd36256a4bd53e9dacfa2677 Mon Sep 17 00:00:00 2001 From: Thadeu Lima de Souza Cascardo Date: Wed, 23 Apr 2025 05:45:42 -0300 Subject: char: misc: restrict the dynamic range to exclude reserved minors When this was first reported [1], the possibility of having sufficient number of dynamic misc devices was theoretical, in the case of dlm driver. In practice, its userspace never created more than one device. What we know from commit ab760791c0cf ("char: misc: Increase the maximum number of dynamic misc devices to 1048448"), is that the miscdevice interface has been used for allocating more than the single-shot devices it was designed for. And it is not only coresight_tmc, but many other drivers are able to create multiple devices. On systems like the ones described in the above commit, it is certain that the dynamic allocation will allocate certain reserved minor numbers, leading to failures when a later driver tries to claim its reserved number. Instead of excluding the historically statically allocated range from dynamic allocation, restrict the latter to minors above 255. That also removes the need for DYNAMIC_MINORS and the convolution in allocating minor numbers, simplifying the code. Since commit ab760791c0cf ("char: misc: Increase the maximum number of dynamic misc devices to 1048448") has been applied, such range is already possible. And given such devices already need to be dynamically created, there should be no systems where this might become a problem. [1] https://lore.kernel.org/all/1257813017-28598-3-git-send-email-cascardo@holoscopio.com/ Signed-off-by: Thadeu Lima de Souza Cascardo Link: https://lore.kernel.org/r/20250423-misc-dynrange-v4-1-133b5ae4ca18@igalia.com Signed-off-by: Greg Kroah-Hartman --- drivers/char/misc.c | 28 +++++----------------------- 1 file changed, 5 insertions(+), 23 deletions(-) diff --git a/drivers/char/misc.c b/drivers/char/misc.c index f7dd455dd0dd..2a43695e7bc1 100644 --- a/drivers/char/misc.c +++ b/drivers/char/misc.c @@ -58,9 +58,8 @@ static LIST_HEAD(misc_list); static DEFINE_MUTEX(misc_mtx); /* - * Assigned numbers, used for dynamic minors + * Assigned numbers. */ -#define DYNAMIC_MINORS 128 /* like dynamic majors */ static DEFINE_IDA(misc_minors_ida); static int misc_minor_alloc(int minor) @@ -69,34 +68,17 @@ static int misc_minor_alloc(int minor) if (minor == MISC_DYNAMIC_MINOR) { /* allocate free id */ - ret = ida_alloc_max(&misc_minors_ida, DYNAMIC_MINORS - 1, GFP_KERNEL); - if (ret >= 0) { - ret = DYNAMIC_MINORS - ret - 1; - } else { - ret = ida_alloc_range(&misc_minors_ida, MISC_DYNAMIC_MINOR + 1, - MINORMASK, GFP_KERNEL); - } + ret = ida_alloc_range(&misc_minors_ida, MISC_DYNAMIC_MINOR + 1, + MINORMASK, GFP_KERNEL); } else { - /* specific minor, check if it is in dynamic or misc dynamic range */ - if (minor < DYNAMIC_MINORS) { - minor = DYNAMIC_MINORS - minor - 1; - ret = ida_alloc_range(&misc_minors_ida, minor, minor, GFP_KERNEL); - } else if (minor > MISC_DYNAMIC_MINOR) { - ret = ida_alloc_range(&misc_minors_ida, minor, minor, GFP_KERNEL); - } else { - /* case of non-dynamic minors, no need to allocate id */ - ret = 0; - } + ret = ida_alloc_range(&misc_minors_ida, minor, minor, GFP_KERNEL); } return ret; } static void misc_minor_free(int minor) { - if (minor < DYNAMIC_MINORS) - ida_free(&misc_minors_ida, DYNAMIC_MINORS - minor - 1); - else if (minor > MISC_DYNAMIC_MINOR) - ida_free(&misc_minors_ida, minor); + ida_free(&misc_minors_ida, minor); } #ifdef CONFIG_PROC_FS -- cgit v1.2.3 From 45f0de4f8dc385cd8959d884cd89b3b84c76b7f9 Mon Sep 17 00:00:00 2001 From: Thadeu Lima de Souza Cascardo Date: Wed, 23 Apr 2025 05:45:43 -0300 Subject: char: misc: add test cases Add test cases for static and dynamic minor number allocation and deallocation. While at it, improve description and test suite name. Some of the cases include: - that static and dynamic allocation reserved the expected minors. - that registering duplicate minors or duplicate names will fail. - that failing to create a sysfs file (due to duplicate names) will deallocate the dynamic minor correctly. - that dynamic allocation does not allocate a minor number in the static range. - that there are no collisions when mixing dynamic and static allocations. - that opening devices with various minor device numbers work. - that registering a static number in the dynamic range won't conflict with a dynamic allocation. This last test verifies the bug fixed by commit 6d04d2b554b1 ("misc: misc_minor_alloc to use ida for all dynamic/misc dynamic minors") has not regressed. Signed-off-by: Thadeu Lima de Souza Cascardo Link: https://lore.kernel.org/r/20250423-misc-dynrange-v4-2-133b5ae4ca18@igalia.com Signed-off-by: Greg Kroah-Hartman --- drivers/misc/misc_minor_kunit.c | 589 +++++++++++++++++++++++++++++++++++++++- 1 file changed, 587 insertions(+), 2 deletions(-) diff --git a/drivers/misc/misc_minor_kunit.c b/drivers/misc/misc_minor_kunit.c index 293e0fb7e43e..30eceac5f1b6 100644 --- a/drivers/misc/misc_minor_kunit.c +++ b/drivers/misc/misc_minor_kunit.c @@ -3,6 +3,9 @@ #include #include #include +#include +#include +#include /* dynamic minor (2) */ static struct miscdevice dev_dynamic_minor = { @@ -51,19 +54,601 @@ static void kunit_misc_dynamic_minor(struct kunit *test) misc_deregister(&dev_misc_dynamic_minor); } +struct miscdev_test_case { + const char *str; + int minor; +}; + +static struct miscdev_test_case miscdev_test_ranges[] = { + { + .str = "lower static range, top", + .minor = 15, + }, + { + .str = "upper static range, bottom", + .minor = 130, + }, + { + .str = "lower static range, bottom", + .minor = 0, + }, + { + .str = "upper static range, top", + .minor = MISC_DYNAMIC_MINOR - 1, + }, +}; + +KUNIT_ARRAY_PARAM_DESC(miscdev, miscdev_test_ranges, str); + +static int miscdev_find_minors(struct kunit_suite *suite) +{ + int ret; + struct miscdevice miscstat = { + .name = "miscstat", + }; + int i; + + for (i = 15; i >= 0; i--) { + miscstat.minor = i; + ret = misc_register(&miscstat); + if (ret == 0) + break; + } + + if (ret == 0) { + kunit_info(suite, "found misc device minor %d available\n", + miscstat.minor); + miscdev_test_ranges[0].minor = miscstat.minor; + misc_deregister(&miscstat); + } else { + return ret; + } + + for (i = 128; i < MISC_DYNAMIC_MINOR; i++) { + miscstat.minor = i; + ret = misc_register(&miscstat); + if (ret == 0) + break; + } + + if (ret == 0) { + kunit_info(suite, "found misc device minor %d available\n", + miscstat.minor); + miscdev_test_ranges[1].minor = miscstat.minor; + misc_deregister(&miscstat); + } else { + return ret; + } + + for (i = 0; i < miscdev_test_ranges[0].minor; i++) { + miscstat.minor = i; + ret = misc_register(&miscstat); + if (ret == 0) + break; + } + + if (ret == 0) { + kunit_info(suite, "found misc device minor %d available\n", + miscstat.minor); + miscdev_test_ranges[2].minor = miscstat.minor; + misc_deregister(&miscstat); + } else { + return ret; + } + + for (i = MISC_DYNAMIC_MINOR - 1; i > miscdev_test_ranges[1].minor; i--) { + miscstat.minor = i; + ret = misc_register(&miscstat); + if (ret == 0) + break; + } + + if (ret == 0) { + kunit_info(suite, "found misc device minor %d available\n", + miscstat.minor); + miscdev_test_ranges[3].minor = miscstat.minor; + misc_deregister(&miscstat); + } + + return ret; +} + +static bool is_valid_dynamic_minor(int minor) +{ + if (minor < 0) + return false; + if (minor == MISC_DYNAMIC_MINOR) + return false; + if (minor >= 0 && minor <= 15) + return false; + if (minor >= 128 && minor < MISC_DYNAMIC_MINOR) + return false; + return true; +} + +static int miscdev_test_open(struct inode *inode, struct file *file) +{ + return 0; +} + +static const struct file_operations miscdev_test_fops = { + .open = miscdev_test_open, +}; + +static void __init miscdev_test_can_open(struct kunit *test, struct miscdevice *misc) +{ + int ret; + struct file *filp; + char *devname; + + devname = kasprintf(GFP_KERNEL, "/dev/%s", misc->name); + ret = init_mknod(devname, S_IFCHR | 0600, + new_encode_dev(MKDEV(MISC_MAJOR, misc->minor))); + if (ret != 0) + KUNIT_FAIL(test, "failed to create node\n"); + + filp = filp_open(devname, O_RDONLY, 0); + if (IS_ERR_OR_NULL(filp)) + KUNIT_FAIL(test, "failed to open misc device: %ld\n", PTR_ERR(filp)); + else + fput(filp); + + init_unlink(devname); + kfree(devname); +} + +static void __init miscdev_test_static_basic(struct kunit *test) +{ + struct miscdevice misc_test = { + .name = "misc_test", + .fops = &miscdev_test_fops, + }; + int ret; + const struct miscdev_test_case *params = test->param_value; + + misc_test.minor = params->minor; + + ret = misc_register(&misc_test); + KUNIT_EXPECT_EQ(test, ret, 0); + KUNIT_EXPECT_EQ(test, misc_test.minor, params->minor); + + if (ret == 0) { + miscdev_test_can_open(test, &misc_test); + misc_deregister(&misc_test); + } +} + +static void __init miscdev_test_dynamic_basic(struct kunit *test) +{ + struct miscdevice misc_test = { + .minor = MISC_DYNAMIC_MINOR, + .name = "misc_test", + .fops = &miscdev_test_fops, + }; + int ret; + + ret = misc_register(&misc_test); + KUNIT_EXPECT_EQ(test, ret, 0); + KUNIT_EXPECT_TRUE(test, is_valid_dynamic_minor(misc_test.minor)); + + if (ret == 0) { + miscdev_test_can_open(test, &misc_test); + misc_deregister(&misc_test); + } +} + +static void miscdev_test_twice(struct kunit *test) +{ + struct miscdevice misc_test = { + .name = "misc_test", + .fops = &miscdev_test_fops, + }; + int ret; + const struct miscdev_test_case *params = test->param_value; + + misc_test.minor = params->minor; + + ret = misc_register(&misc_test); + KUNIT_EXPECT_EQ(test, ret, 0); + KUNIT_EXPECT_EQ(test, misc_test.minor, params->minor); + if (ret == 0) + misc_deregister(&misc_test); + + ret = misc_register(&misc_test); + KUNIT_EXPECT_EQ(test, ret, 0); + KUNIT_EXPECT_EQ(test, misc_test.minor, params->minor); + if (ret == 0) + misc_deregister(&misc_test); +} + +static void miscdev_test_duplicate_minor(struct kunit *test) +{ + struct miscdevice misc1 = { + .name = "misc1", + .fops = &miscdev_test_fops, + }; + struct miscdevice misc2 = { + .name = "misc2", + .fops = &miscdev_test_fops, + }; + int ret; + const struct miscdev_test_case *params = test->param_value; + + misc1.minor = params->minor; + misc2.minor = params->minor; + + ret = misc_register(&misc1); + KUNIT_EXPECT_EQ(test, ret, 0); + KUNIT_EXPECT_EQ(test, misc1.minor, params->minor); + + ret = misc_register(&misc2); + KUNIT_EXPECT_EQ(test, ret, -EBUSY); + if (ret == 0) + misc_deregister(&misc2); + + misc_deregister(&misc1); +} + +static void miscdev_test_duplicate_name(struct kunit *test) +{ + struct miscdevice misc1 = { + .minor = MISC_DYNAMIC_MINOR, + .name = "misc1", + .fops = &miscdev_test_fops, + }; + struct miscdevice misc2 = { + .minor = MISC_DYNAMIC_MINOR, + .name = "misc1", + .fops = &miscdev_test_fops, + }; + int ret; + + ret = misc_register(&misc1); + KUNIT_EXPECT_EQ(test, ret, 0); + KUNIT_EXPECT_TRUE(test, is_valid_dynamic_minor(misc1.minor)); + + ret = misc_register(&misc2); + KUNIT_EXPECT_EQ(test, ret, -EEXIST); + if (ret == 0) + misc_deregister(&misc2); + + misc_deregister(&misc1); +} + +/* + * Test that after a duplicate name failure, the reserved minor number is + * freed to be allocated next. + */ +static void miscdev_test_duplicate_name_leak(struct kunit *test) +{ + struct miscdevice misc1 = { + .minor = MISC_DYNAMIC_MINOR, + .name = "misc1", + .fops = &miscdev_test_fops, + }; + struct miscdevice misc2 = { + .minor = MISC_DYNAMIC_MINOR, + .name = "misc1", + .fops = &miscdev_test_fops, + }; + struct miscdevice misc3 = { + .minor = MISC_DYNAMIC_MINOR, + .name = "misc3", + .fops = &miscdev_test_fops, + }; + int ret; + int dyn_minor; + + ret = misc_register(&misc1); + KUNIT_EXPECT_EQ(test, ret, 0); + KUNIT_EXPECT_TRUE(test, is_valid_dynamic_minor(misc1.minor)); + + /* + * Find out what is the next minor number available. + */ + ret = misc_register(&misc3); + KUNIT_EXPECT_EQ(test, ret, 0); + KUNIT_EXPECT_TRUE(test, is_valid_dynamic_minor(misc3.minor)); + dyn_minor = misc3.minor; + misc_deregister(&misc3); + misc3.minor = MISC_DYNAMIC_MINOR; + + ret = misc_register(&misc2); + KUNIT_EXPECT_EQ(test, ret, -EEXIST); + if (ret == 0) + misc_deregister(&misc2); + + /* + * Now check that we can still get the same minor we found before. + */ + ret = misc_register(&misc3); + KUNIT_EXPECT_EQ(test, ret, 0); + KUNIT_EXPECT_TRUE(test, is_valid_dynamic_minor(misc3.minor)); + KUNIT_EXPECT_EQ(test, misc3.minor, dyn_minor); + misc_deregister(&misc3); + + misc_deregister(&misc1); +} + +/* + * Try to register a static minor with a duplicate name. That might not + * deallocate the minor, preventing it from being used again. + */ +static void miscdev_test_duplicate_error(struct kunit *test) +{ + struct miscdevice miscdyn = { + .minor = MISC_DYNAMIC_MINOR, + .name = "name1", + .fops = &miscdev_test_fops, + }; + struct miscdevice miscstat = { + .name = "name1", + .fops = &miscdev_test_fops, + }; + struct miscdevice miscnew = { + .name = "name2", + .fops = &miscdev_test_fops, + }; + int ret; + const struct miscdev_test_case *params = test->param_value; + + miscstat.minor = params->minor; + miscnew.minor = params->minor; + + ret = misc_register(&miscdyn); + KUNIT_EXPECT_EQ(test, ret, 0); + KUNIT_EXPECT_TRUE(test, is_valid_dynamic_minor(miscdyn.minor)); + + ret = misc_register(&miscstat); + KUNIT_EXPECT_EQ(test, ret, -EEXIST); + if (ret == 0) + misc_deregister(&miscstat); + + ret = misc_register(&miscnew); + KUNIT_EXPECT_EQ(test, ret, 0); + KUNIT_EXPECT_EQ(test, miscnew.minor, params->minor); + if (ret == 0) + misc_deregister(&miscnew); + + misc_deregister(&miscdyn); +} + +static void __init miscdev_test_dynamic_only_range(struct kunit *test) +{ + int ret; + struct miscdevice *miscdev; + const int dynamic_minors = 256; + int i; + + miscdev = kunit_kmalloc_array(test, dynamic_minors, + sizeof(struct miscdevice), + GFP_KERNEL | __GFP_ZERO); + + for (i = 0; i < dynamic_minors; i++) { + miscdev[i].minor = MISC_DYNAMIC_MINOR; + miscdev[i].name = kasprintf(GFP_KERNEL, "misc_test%d", i); + miscdev[i].fops = &miscdev_test_fops; + ret = misc_register(&miscdev[i]); + if (ret != 0) + break; + /* + * This is the bug we are looking for! + * We asked for a dynamic minor and got a minor in the static range space. + */ + if (miscdev[i].minor >= 0 && miscdev[i].minor <= 15) { + KUNIT_FAIL(test, "misc_register allocated minor %d\n", miscdev[i].minor); + i++; + break; + } + KUNIT_EXPECT_TRUE(test, is_valid_dynamic_minor(miscdev[i].minor)); + } + + for (i--; i >= 0; i--) { + miscdev_test_can_open(test, &miscdev[i]); + misc_deregister(&miscdev[i]); + kfree_const(miscdev[i].name); + } + + KUNIT_EXPECT_EQ(test, ret, 0); +} + +static void __init miscdev_test_collision(struct kunit *test) +{ + int ret; + struct miscdevice *miscdev; + struct miscdevice miscstat = { + .name = "miscstat", + .fops = &miscdev_test_fops, + }; + const int dynamic_minors = 256; + int i; + + miscdev = kunit_kmalloc_array(test, dynamic_minors, + sizeof(struct miscdevice), + GFP_KERNEL | __GFP_ZERO); + + miscstat.minor = miscdev_test_ranges[0].minor; + ret = misc_register(&miscstat); + KUNIT_ASSERT_EQ(test, ret, 0); + KUNIT_EXPECT_EQ(test, miscstat.minor, miscdev_test_ranges[0].minor); + + for (i = 0; i < dynamic_minors; i++) { + miscdev[i].minor = MISC_DYNAMIC_MINOR; + miscdev[i].name = kasprintf(GFP_KERNEL, "misc_test%d", i); + miscdev[i].fops = &miscdev_test_fops; + ret = misc_register(&miscdev[i]); + if (ret != 0) + break; + KUNIT_EXPECT_TRUE(test, is_valid_dynamic_minor(miscdev[i].minor)); + } + + for (i--; i >= 0; i--) { + miscdev_test_can_open(test, &miscdev[i]); + misc_deregister(&miscdev[i]); + kfree_const(miscdev[i].name); + } + + misc_deregister(&miscstat); + + KUNIT_EXPECT_EQ(test, ret, 0); +} + +static void __init miscdev_test_collision_reverse(struct kunit *test) +{ + int ret; + struct miscdevice *miscdev; + struct miscdevice miscstat = { + .name = "miscstat", + .fops = &miscdev_test_fops, + }; + const int dynamic_minors = 256; + int i; + + miscdev = kunit_kmalloc_array(test, dynamic_minors, + sizeof(struct miscdevice), + GFP_KERNEL | __GFP_ZERO); + + for (i = 0; i < dynamic_minors; i++) { + miscdev[i].minor = MISC_DYNAMIC_MINOR; + miscdev[i].name = kasprintf(GFP_KERNEL, "misc_test%d", i); + miscdev[i].fops = &miscdev_test_fops; + ret = misc_register(&miscdev[i]); + if (ret != 0) + break; + KUNIT_EXPECT_TRUE(test, is_valid_dynamic_minor(miscdev[i].minor)); + } + + KUNIT_EXPECT_EQ(test, ret, 0); + + miscstat.minor = miscdev_test_ranges[0].minor; + ret = misc_register(&miscstat); + KUNIT_EXPECT_EQ(test, ret, 0); + KUNIT_EXPECT_EQ(test, miscstat.minor, miscdev_test_ranges[0].minor); + if (ret == 0) + misc_deregister(&miscstat); + + for (i--; i >= 0; i--) { + miscdev_test_can_open(test, &miscdev[i]); + misc_deregister(&miscdev[i]); + kfree_const(miscdev[i].name); + } +} + +static void __init miscdev_test_conflict(struct kunit *test) +{ + int ret; + struct miscdevice miscdyn = { + .name = "miscdyn", + .minor = MISC_DYNAMIC_MINOR, + .fops = &miscdev_test_fops, + }; + struct miscdevice miscstat = { + .name = "miscstat", + .fops = &miscdev_test_fops, + }; + + ret = misc_register(&miscdyn); + KUNIT_ASSERT_EQ(test, ret, 0); + KUNIT_EXPECT_TRUE(test, is_valid_dynamic_minor(miscdyn.minor)); + + /* + * Try to register a static minor with the same minor as the + * dynamic one. + */ + miscstat.minor = miscdyn.minor; + ret = misc_register(&miscstat); + KUNIT_EXPECT_EQ(test, ret, -EBUSY); + if (ret == 0) + misc_deregister(&miscstat); + + miscdev_test_can_open(test, &miscdyn); + + misc_deregister(&miscdyn); +} + +static void __init miscdev_test_conflict_reverse(struct kunit *test) +{ + int ret; + struct miscdevice miscdyn = { + .name = "miscdyn", + .minor = MISC_DYNAMIC_MINOR, + .fops = &miscdev_test_fops, + }; + struct miscdevice miscstat = { + .name = "miscstat", + .fops = &miscdev_test_fops, + }; + + /* + * Find the first available dynamic minor to use it as a static + * minor later on. + */ + ret = misc_register(&miscdyn); + KUNIT_ASSERT_EQ(test, ret, 0); + KUNIT_EXPECT_TRUE(test, is_valid_dynamic_minor(miscdyn.minor)); + miscstat.minor = miscdyn.minor; + misc_deregister(&miscdyn); + + ret = misc_register(&miscstat); + KUNIT_EXPECT_EQ(test, ret, 0); + KUNIT_EXPECT_EQ(test, miscstat.minor, miscdyn.minor); + + /* + * Try to register a dynamic minor after registering a static minor + * within the dynamic range. It should work but get a different + * minor. + */ + miscdyn.minor = MISC_DYNAMIC_MINOR; + ret = misc_register(&miscdyn); + KUNIT_EXPECT_EQ(test, ret, 0); + KUNIT_EXPECT_NE(test, miscdyn.minor, miscstat.minor); + KUNIT_EXPECT_TRUE(test, is_valid_dynamic_minor(miscdyn.minor)); + if (ret == 0) + misc_deregister(&miscdyn); + + miscdev_test_can_open(test, &miscstat); + + misc_deregister(&miscstat); +} + static struct kunit_case test_cases[] = { KUNIT_CASE(kunit_dynamic_minor), KUNIT_CASE(kunit_static_minor), KUNIT_CASE(kunit_misc_dynamic_minor), + KUNIT_CASE_PARAM(miscdev_test_twice, miscdev_gen_params), + KUNIT_CASE_PARAM(miscdev_test_duplicate_minor, miscdev_gen_params), + KUNIT_CASE(miscdev_test_duplicate_name), + KUNIT_CASE(miscdev_test_duplicate_name_leak), + KUNIT_CASE_PARAM(miscdev_test_duplicate_error, miscdev_gen_params), {} }; static struct kunit_suite test_suite = { - .name = "misc_minor_test", + .name = "miscdev", + .suite_init = miscdev_find_minors, .test_cases = test_cases, }; kunit_test_suite(test_suite); +static struct kunit_case __refdata test_init_cases[] = { + KUNIT_CASE_PARAM(miscdev_test_static_basic, miscdev_gen_params), + KUNIT_CASE(miscdev_test_dynamic_basic), + KUNIT_CASE(miscdev_test_dynamic_only_range), + KUNIT_CASE(miscdev_test_collision), + KUNIT_CASE(miscdev_test_collision_reverse), + KUNIT_CASE(miscdev_test_conflict), + KUNIT_CASE(miscdev_test_conflict_reverse), + {} +}; + +static struct kunit_suite test_init_suite = { + .name = "miscdev_init", + .suite_init = miscdev_find_minors, + .test_cases = test_init_cases, +}; +kunit_test_init_section_suite(test_init_suite); + MODULE_LICENSE("GPL"); MODULE_AUTHOR("Vimal Agrawal"); -MODULE_DESCRIPTION("misc minor testing"); +MODULE_AUTHOR("Thadeu Lima de Souza Cascardo "); +MODULE_DESCRIPTION("Test module for misc character devices"); -- cgit v1.2.3 From 77feb17c950e03dd0c0d4a64642f3e658679fe3c Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Wed, 23 Apr 2025 20:22:05 +0300 Subject: rpmsg: qcom_smd: Fix uninitialized return variable in __qcom_smd_send() The "ret" variable isn't initialized if we don't enter the loop. For example, if "channel->state" is not SMD_CHANNEL_OPENED. Fixes: 33e3820dda88 ("rpmsg: smd: Use spinlock in tx path") Reported-by: Linux Kernel Functional Testing Reviewed-by: Abel Vesa Tested-by: Naresh Kamboju Signed-off-by: Dan Carpenter Link: https://lore.kernel.org/r/aAkhvV0nSbrsef1P@stanley.mountain Signed-off-by: Greg Kroah-Hartman --- drivers/rpmsg/qcom_smd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/rpmsg/qcom_smd.c b/drivers/rpmsg/qcom_smd.c index 40d386809d6b..bb161def3175 100644 --- a/drivers/rpmsg/qcom_smd.c +++ b/drivers/rpmsg/qcom_smd.c @@ -746,7 +746,7 @@ static int __qcom_smd_send(struct qcom_smd_channel *channel, const void *data, __le32 hdr[5] = { cpu_to_le32(len), }; int tlen = sizeof(hdr) + len; unsigned long flags; - int ret; + int ret = 0; /* Word aligned channels only accept word size aligned data */ if (channel->info_word && len % 4) -- cgit v1.2.3 From af73692e7b486497b8983d7cabbcd5e4dcf5cb98 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Mon, 24 Mar 2025 13:53:02 +0100 Subject: dt-bindings: interconnect: Correct indentation and style in DTS example DTS example in the bindings should be indented with 2- or 4-spaces and aligned with opening '- |', so correct any differences like 3-spaces or mixtures 2- and 4-spaces in one binding. While re-indenting, drop unused labels. No functional changes here, but saves some comments during reviews of new patches built on existing code. Signed-off-by: Krzysztof Kozlowski Reviewed-by: "Rob Herring (Arm)" Link: https://lore.kernel.org/r/20250324125302.82167-1-krzysztof.kozlowski@linaro.org Signed-off-by: Georgi Djakov --- .../bindings/interconnect/qcom,msm8939.yaml | 8 +++---- .../bindings/interconnect/qcom,msm8953.yaml | 20 ++++++++-------- .../bindings/interconnect/qcom,msm8974.yaml | 20 ++++++++-------- .../devicetree/bindings/interconnect/qcom,rpm.yaml | 12 +++++----- .../bindings/interconnect/qcom,rpmh.yaml | 28 +++++++++++----------- .../bindings/interconnect/qcom,sdx75-rpmh.yaml | 16 ++++++------- 6 files changed, 52 insertions(+), 52 deletions(-) diff --git a/Documentation/devicetree/bindings/interconnect/qcom,msm8939.yaml b/Documentation/devicetree/bindings/interconnect/qcom,msm8939.yaml index 4b08be72bbd7..534644cccdcb 100644 --- a/Documentation/devicetree/bindings/interconnect/qcom,msm8939.yaml +++ b/Documentation/devicetree/bindings/interconnect/qcom,msm8939.yaml @@ -70,8 +70,8 @@ examples: reg = <0x00580000 0x14000>; #interconnect-cells = <1>; - snoc_mm: interconnect-snoc { - compatible = "qcom,msm8939-snoc-mm"; - #interconnect-cells = <1>; - }; + snoc_mm: interconnect-snoc { + compatible = "qcom,msm8939-snoc-mm"; + #interconnect-cells = <1>; + }; }; diff --git a/Documentation/devicetree/bindings/interconnect/qcom,msm8953.yaml b/Documentation/devicetree/bindings/interconnect/qcom,msm8953.yaml index 343ff62d7b65..56cdb77b369a 100644 --- a/Documentation/devicetree/bindings/interconnect/qcom,msm8953.yaml +++ b/Documentation/devicetree/bindings/interconnect/qcom,msm8953.yaml @@ -84,17 +84,17 @@ additionalProperties: false examples: - | - #include + #include - snoc: interconnect@580000 { - compatible = "qcom,msm8953-snoc"; - reg = <0x580000 0x16080>; + interconnect@580000 { + compatible = "qcom,msm8953-snoc"; + reg = <0x580000 0x16080>; - #interconnect-cells = <2>; + #interconnect-cells = <2>; - snoc_mm: interconnect-snoc { - compatible = "qcom,msm8953-snoc-mm"; + interconnect-snoc { + compatible = "qcom,msm8953-snoc-mm"; - #interconnect-cells = <2>; - }; - }; + #interconnect-cells = <2>; + }; + }; diff --git a/Documentation/devicetree/bindings/interconnect/qcom,msm8974.yaml b/Documentation/devicetree/bindings/interconnect/qcom,msm8974.yaml index 8004c4baf397..95ce25ce1f7d 100644 --- a/Documentation/devicetree/bindings/interconnect/qcom,msm8974.yaml +++ b/Documentation/devicetree/bindings/interconnect/qcom,msm8974.yaml @@ -50,13 +50,13 @@ additionalProperties: false examples: - | - #include - - bimc: interconnect@fc380000 { - reg = <0xfc380000 0x6a000>; - compatible = "qcom,msm8974-bimc"; - #interconnect-cells = <1>; - clock-names = "bus", "bus_a"; - clocks = <&rpmcc RPM_SMD_BIMC_CLK>, - <&rpmcc RPM_SMD_BIMC_A_CLK>; - }; + #include + + interconnect@fc380000 { + reg = <0xfc380000 0x6a000>; + compatible = "qcom,msm8974-bimc"; + #interconnect-cells = <1>; + clock-names = "bus", "bus_a"; + clocks = <&rpmcc RPM_SMD_BIMC_CLK>, + <&rpmcc RPM_SMD_BIMC_A_CLK>; + }; diff --git a/Documentation/devicetree/bindings/interconnect/qcom,rpm.yaml b/Documentation/devicetree/bindings/interconnect/qcom,rpm.yaml index 5aaa92a7cef7..01d436d4a553 100644 --- a/Documentation/devicetree/bindings/interconnect/qcom,rpm.yaml +++ b/Documentation/devicetree/bindings/interconnect/qcom,rpm.yaml @@ -41,10 +41,10 @@ unevaluatedProperties: false examples: - | - #include + #include - bimc: interconnect@400000 { - compatible = "qcom,msm8916-bimc"; - reg = <0x00400000 0x62000>; - #interconnect-cells = <1>; - }; + interconnect@400000 { + compatible = "qcom,msm8916-bimc"; + reg = <0x00400000 0x62000>; + #interconnect-cells = <1>; + }; diff --git a/Documentation/devicetree/bindings/interconnect/qcom,rpmh.yaml b/Documentation/devicetree/bindings/interconnect/qcom,rpmh.yaml index 1b9164dc162f..dad3ad2fd93b 100644 --- a/Documentation/devicetree/bindings/interconnect/qcom,rpmh.yaml +++ b/Documentation/devicetree/bindings/interconnect/qcom,rpmh.yaml @@ -127,19 +127,19 @@ unevaluatedProperties: false examples: - | - #include + #include - mem_noc: interconnect@1380000 { - compatible = "qcom,sdm845-mem-noc"; - reg = <0x01380000 0x27200>; - #interconnect-cells = <1>; - qcom,bcm-voters = <&apps_bcm_voter>; - }; + interconnect@1380000 { + compatible = "qcom,sdm845-mem-noc"; + reg = <0x01380000 0x27200>; + #interconnect-cells = <1>; + qcom,bcm-voters = <&apps_bcm_voter>; + }; - mmss_noc: interconnect@1740000 { - compatible = "qcom,sdm845-mmss-noc"; - reg = <0x01740000 0x1c1000>; - #interconnect-cells = <1>; - qcom,bcm-voter-names = "apps", "disp"; - qcom,bcm-voters = <&apps_bcm_voter>, <&disp_bcm_voter>; - }; + interconnect@1740000 { + compatible = "qcom,sdm845-mmss-noc"; + reg = <0x01740000 0x1c1000>; + #interconnect-cells = <1>; + qcom,bcm-voter-names = "apps", "disp"; + qcom,bcm-voters = <&apps_bcm_voter>, <&disp_bcm_voter>; + }; diff --git a/Documentation/devicetree/bindings/interconnect/qcom,sdx75-rpmh.yaml b/Documentation/devicetree/bindings/interconnect/qcom,sdx75-rpmh.yaml index 71cf7e252bfc..4b5e9f9b07ec 100644 --- a/Documentation/devicetree/bindings/interconnect/qcom,sdx75-rpmh.yaml +++ b/Documentation/devicetree/bindings/interconnect/qcom,sdx75-rpmh.yaml @@ -78,15 +78,15 @@ examples: #include clk_virt: interconnect-0 { - compatible = "qcom,sdx75-clk-virt"; - #interconnect-cells = <2>; - qcom,bcm-voters = <&apps_bcm_voter>; - clocks = <&rpmhcc RPMH_QPIC_CLK>; + compatible = "qcom,sdx75-clk-virt"; + #interconnect-cells = <2>; + qcom,bcm-voters = <&apps_bcm_voter>; + clocks = <&rpmhcc RPMH_QPIC_CLK>; }; system_noc: interconnect@1640000 { - compatible = "qcom,sdx75-system-noc"; - reg = <0x1640000 0x4b400>; - #interconnect-cells = <2>; - qcom,bcm-voters = <&apps_bcm_voter>; + compatible = "qcom,sdx75-system-noc"; + reg = <0x1640000 0x4b400>; + #interconnect-cells = <2>; + qcom,bcm-voters = <&apps_bcm_voter>; }; -- cgit v1.2.3 From 40ef9b6b778fee32b33ff52b5e9c07113b6c6435 Mon Sep 17 00:00:00 2001 From: Neil Armstrong Date: Mon, 7 Apr 2025 17:16:47 +0200 Subject: interconnect: qcom: sm8650: enable QoS configuration Enable QoS configuration for master ports with predefined values for priority and urgency forwarding. Signed-off-by: Neil Armstrong Link: https://lore.kernel.org/r/20250407-topic-sm8650-upstream-icc-qos-v1-1-93b33f99a455@linaro.org Signed-off-by: Georgi Djakov --- drivers/interconnect/qcom/sm8650.c | 327 +++++++++++++++++++++++++++++++++++++ 1 file changed, 327 insertions(+) diff --git a/drivers/interconnect/qcom/sm8650.c b/drivers/interconnect/qcom/sm8650.c index 20ac5bc5e1fb..f6911891503a 100644 --- a/drivers/interconnect/qcom/sm8650.c +++ b/drivers/interconnect/qcom/sm8650.c @@ -17,20 +17,45 @@ #include "icc-rpmh.h" #include "sm8650.h" +static const struct regmap_config icc_regmap_config = { + .reg_bits = 32, + .reg_stride = 4, + .val_bits = 32, + .fast_io = true, +}; + +static struct qcom_icc_qosbox qhm_qspi_qos = { + .num_ports = 1, + .port_offsets = { 0xc000 }, + .prio = 2, + .urg_fwd = 0, + .prio_fwd_disable = 0, +}; + static struct qcom_icc_node qhm_qspi = { .name = "qhm_qspi", .id = SM8650_MASTER_QSPI_0, .channels = 1, .buswidth = 4, + .qosbox = &qhm_qspi_qos, .num_links = 1, .links = { SM8650_SLAVE_A1NOC_SNOC }, }; +static struct qcom_icc_qosbox qhm_qup1_qos = { + .num_ports = 1, + .port_offsets = { 0xd000 }, + .prio = 2, + .urg_fwd = 0, + .prio_fwd_disable = 0, +}; + static struct qcom_icc_node qhm_qup1 = { .name = "qhm_qup1", .id = SM8650_MASTER_QUP_1, .channels = 1, .buswidth = 4, + .qosbox = &qhm_qup1_qos, .num_links = 1, .links = { SM8650_SLAVE_A1NOC_SNOC }, }; @@ -44,65 +69,128 @@ static struct qcom_icc_node qxm_qup02 = { .links = { SM8650_SLAVE_A1NOC_SNOC }, }; +static struct qcom_icc_qosbox xm_sdc4_qos = { + .num_ports = 1, + .port_offsets = { 0xe000 }, + .prio = 2, + .urg_fwd = 0, + .prio_fwd_disable = 0, +}; + static struct qcom_icc_node xm_sdc4 = { .name = "xm_sdc4", .id = SM8650_MASTER_SDCC_4, .channels = 1, .buswidth = 8, + .qosbox = &xm_sdc4_qos, .num_links = 1, .links = { SM8650_SLAVE_A1NOC_SNOC }, }; +static struct qcom_icc_qosbox xm_ufs_mem_qos = { + .num_ports = 1, + .port_offsets = { 0xf000 }, + .prio = 2, + .urg_fwd = 0, + .prio_fwd_disable = 0, +}; + static struct qcom_icc_node xm_ufs_mem = { .name = "xm_ufs_mem", .id = SM8650_MASTER_UFS_MEM, .channels = 1, .buswidth = 16, + .qosbox = &xm_ufs_mem_qos, .num_links = 1, .links = { SM8650_SLAVE_A1NOC_SNOC }, }; +static struct qcom_icc_qosbox xm_usb3_0_qos = { + .num_ports = 1, + .port_offsets = { 0x10000 }, + .prio = 2, + .urg_fwd = 0, + .prio_fwd_disable = 0, +}; + static struct qcom_icc_node xm_usb3_0 = { .name = "xm_usb3_0", .id = SM8650_MASTER_USB3_0, .channels = 1, .buswidth = 8, + .qosbox = &xm_usb3_0_qos, .num_links = 1, .links = { SM8650_SLAVE_A1NOC_SNOC }, }; +static struct qcom_icc_qosbox qhm_qdss_bam_qos = { + .num_ports = 1, + .port_offsets = { 0x12000 }, + .prio = 2, + .urg_fwd = 0, + .prio_fwd_disable = 0, +}; + static struct qcom_icc_node qhm_qdss_bam = { .name = "qhm_qdss_bam", .id = SM8650_MASTER_QDSS_BAM, .channels = 1, .buswidth = 4, + .qosbox = &qhm_qdss_bam_qos, .num_links = 1, .links = { SM8650_SLAVE_A2NOC_SNOC }, }; +static struct qcom_icc_qosbox qhm_qup2_qos = { + .num_ports = 1, + .port_offsets = { 0x13000 }, + .prio = 2, + .urg_fwd = 0, + .prio_fwd_disable = 0, +}; + static struct qcom_icc_node qhm_qup2 = { .name = "qhm_qup2", .id = SM8650_MASTER_QUP_2, .channels = 1, .buswidth = 4, + .qosbox = &qhm_qup2_qos, .num_links = 1, .links = { SM8650_SLAVE_A2NOC_SNOC }, }; +static struct qcom_icc_qosbox qxm_crypto_qos = { + .num_ports = 1, + .port_offsets = { 0x15000 }, + .prio = 2, + .urg_fwd = 1, + .prio_fwd_disable = 0, +}; + static struct qcom_icc_node qxm_crypto = { .name = "qxm_crypto", .id = SM8650_MASTER_CRYPTO, .channels = 1, .buswidth = 8, + .qosbox = &qxm_crypto_qos, .num_links = 1, .links = { SM8650_SLAVE_A2NOC_SNOC }, }; +static struct qcom_icc_qosbox qxm_ipa_qos = { + .num_ports = 1, + .port_offsets = { 0x16000 }, + .prio = 2, + .urg_fwd = 1, + .prio_fwd_disable = 0, +}; + static struct qcom_icc_node qxm_ipa = { .name = "qxm_ipa", .id = SM8650_MASTER_IPA, .channels = 1, .buswidth = 8, + .qosbox = &qxm_ipa_qos, .num_links = 1, .links = { SM8650_SLAVE_A2NOC_SNOC }, }; @@ -116,29 +204,56 @@ static struct qcom_icc_node qxm_sp = { .links = { SM8650_SLAVE_A2NOC_SNOC }, }; +static struct qcom_icc_qosbox xm_qdss_etr_0_qos = { + .num_ports = 1, + .port_offsets = { 0x17000 }, + .prio = 2, + .urg_fwd = 0, + .prio_fwd_disable = 0, +}; + static struct qcom_icc_node xm_qdss_etr_0 = { .name = "xm_qdss_etr_0", .id = SM8650_MASTER_QDSS_ETR, .channels = 1, .buswidth = 8, + .qosbox = &xm_qdss_etr_0_qos, .num_links = 1, .links = { SM8650_SLAVE_A2NOC_SNOC }, }; +static struct qcom_icc_qosbox xm_qdss_etr_1_qos = { + .num_ports = 1, + .port_offsets = { 0x18000 }, + .prio = 2, + .urg_fwd = 0, + .prio_fwd_disable = 0, +}; + static struct qcom_icc_node xm_qdss_etr_1 = { .name = "xm_qdss_etr_1", .id = SM8650_MASTER_QDSS_ETR_1, .channels = 1, .buswidth = 8, + .qosbox = &xm_qdss_etr_1_qos, .num_links = 1, .links = { SM8650_SLAVE_A2NOC_SNOC }, }; +static struct qcom_icc_qosbox xm_sdc2_qos = { + .num_ports = 1, + .port_offsets = { 0x19000 }, + .prio = 2, + .urg_fwd = 0, + .prio_fwd_disable = 0, +}; + static struct qcom_icc_node xm_sdc2 = { .name = "xm_sdc2", .id = SM8650_MASTER_SDCC_2, .channels = 1, .buswidth = 8, + .qosbox = &xm_sdc2_qos, .num_links = 1, .links = { SM8650_SLAVE_A2NOC_SNOC }, }; @@ -223,29 +338,56 @@ static struct qcom_icc_node qnm_gemnoc_pcie = { .links = { SM8650_SLAVE_PCIE_0, SM8650_SLAVE_PCIE_1 }, }; +static struct qcom_icc_qosbox alm_gpu_tcu_qos = { + .num_ports = 1, + .port_offsets = { 0xbf000 }, + .prio = 1, + .urg_fwd = 0, + .prio_fwd_disable = 1, +}; + static struct qcom_icc_node alm_gpu_tcu = { .name = "alm_gpu_tcu", .id = SM8650_MASTER_GPU_TCU, .channels = 1, .buswidth = 8, + .qosbox = &alm_gpu_tcu_qos, .num_links = 2, .links = { SM8650_SLAVE_GEM_NOC_CNOC, SM8650_SLAVE_LLCC }, }; +static struct qcom_icc_qosbox alm_sys_tcu_qos = { + .num_ports = 1, + .port_offsets = { 0xc1000 }, + .prio = 6, + .urg_fwd = 0, + .prio_fwd_disable = 1, +}; + static struct qcom_icc_node alm_sys_tcu = { .name = "alm_sys_tcu", .id = SM8650_MASTER_SYS_TCU, .channels = 1, .buswidth = 8, + .qosbox = &alm_sys_tcu_qos, .num_links = 2, .links = { SM8650_SLAVE_GEM_NOC_CNOC, SM8650_SLAVE_LLCC }, }; +static struct qcom_icc_qosbox alm_ubwc_p_tcu_qos = { + .num_ports = 1, + .port_offsets = { 0xc5000 }, + .prio = 1, + .urg_fwd = 0, + .prio_fwd_disable = 1, +}; + static struct qcom_icc_node alm_ubwc_p_tcu = { .name = "alm_ubwc_p_tcu", .id = SM8650_MASTER_UBWC_P_TCU, .channels = 1, .buswidth = 8, + .qosbox = &alm_ubwc_p_tcu_qos, .num_links = 2, .links = { SM8650_SLAVE_GEM_NOC_CNOC, SM8650_SLAVE_LLCC }, }; @@ -260,20 +402,38 @@ static struct qcom_icc_node chm_apps = { SM8650_SLAVE_MEM_NOC_PCIE_SNOC }, }; +static struct qcom_icc_qosbox qnm_gpu_qos = { + .num_ports = 2, + .port_offsets = { 0x31000, 0x71000 }, + .prio = 0, + .urg_fwd = 1, + .prio_fwd_disable = 1, +}; + static struct qcom_icc_node qnm_gpu = { .name = "qnm_gpu", .id = SM8650_MASTER_GFX3D, .channels = 2, .buswidth = 32, + .qosbox = &qnm_gpu_qos, .num_links = 2, .links = { SM8650_SLAVE_GEM_NOC_CNOC, SM8650_SLAVE_LLCC }, }; +static struct qcom_icc_qosbox qnm_lpass_gemnoc_qos = { + .num_ports = 1, + .port_offsets = { 0xb5000 }, + .prio = 0, + .urg_fwd = 1, + .prio_fwd_disable = 0, +}; + static struct qcom_icc_node qnm_lpass_gemnoc = { .name = "qnm_lpass_gemnoc", .id = SM8650_MASTER_LPASS_GEM_NOC, .channels = 1, .buswidth = 16, + .qosbox = &qnm_lpass_gemnoc_qos, .num_links = 3, .links = { SM8650_SLAVE_GEM_NOC_CNOC, SM8650_SLAVE_LLCC, SM8650_SLAVE_MEM_NOC_PCIE_SNOC }, @@ -289,67 +449,130 @@ static struct qcom_icc_node qnm_mdsp = { SM8650_SLAVE_MEM_NOC_PCIE_SNOC }, }; +static struct qcom_icc_qosbox qnm_mnoc_hf_qos = { + .num_ports = 2, + .port_offsets = { 0x33000, 0x73000 }, + .prio = 0, + .urg_fwd = 1, + .prio_fwd_disable = 0, +}; + static struct qcom_icc_node qnm_mnoc_hf = { .name = "qnm_mnoc_hf", .id = SM8650_MASTER_MNOC_HF_MEM_NOC, .channels = 2, .buswidth = 32, + .qosbox = &qnm_mnoc_hf_qos, .num_links = 2, .links = { SM8650_SLAVE_GEM_NOC_CNOC, SM8650_SLAVE_LLCC }, }; +static struct qcom_icc_qosbox qnm_mnoc_sf_qos = { + .num_ports = 2, + .port_offsets = { 0x35000, 0x75000 }, + .prio = 0, + .urg_fwd = 0, + .prio_fwd_disable = 0, +}; + static struct qcom_icc_node qnm_mnoc_sf = { .name = "qnm_mnoc_sf", .id = SM8650_MASTER_MNOC_SF_MEM_NOC, .channels = 2, .buswidth = 32, + .qosbox = &qnm_mnoc_sf_qos, .num_links = 2, .links = { SM8650_SLAVE_GEM_NOC_CNOC, SM8650_SLAVE_LLCC }, }; +static struct qcom_icc_qosbox qnm_nsp_gemnoc_qos = { + .num_ports = 2, + .port_offsets = { 0x37000, 0x77000 }, + .prio = 0, + .urg_fwd = 1, + .prio_fwd_disable = 1, +}; + static struct qcom_icc_node qnm_nsp_gemnoc = { .name = "qnm_nsp_gemnoc", .id = SM8650_MASTER_COMPUTE_NOC, .channels = 2, .buswidth = 32, + .qosbox = &qnm_nsp_gemnoc_qos, .num_links = 3, .links = { SM8650_SLAVE_GEM_NOC_CNOC, SM8650_SLAVE_LLCC, SM8650_SLAVE_MEM_NOC_PCIE_SNOC }, }; +static struct qcom_icc_qosbox qnm_pcie_qos = { + .num_ports = 1, + .port_offsets = { 0xb7000 }, + .prio = 2, + .urg_fwd = 1, + .prio_fwd_disable = 0, +}; + static struct qcom_icc_node qnm_pcie = { .name = "qnm_pcie", .id = SM8650_MASTER_ANOC_PCIE_GEM_NOC, .channels = 1, .buswidth = 16, + .qosbox = &qnm_pcie_qos, .num_links = 2, .links = { SM8650_SLAVE_GEM_NOC_CNOC, SM8650_SLAVE_LLCC }, }; +static struct qcom_icc_qosbox qnm_snoc_sf_qos = { + .num_ports = 1, + .port_offsets = { 0xbb000 }, + .prio = 0, + .urg_fwd = 1, + .prio_fwd_disable = 0, +}; + static struct qcom_icc_node qnm_snoc_sf = { .name = "qnm_snoc_sf", .id = SM8650_MASTER_SNOC_SF_MEM_NOC, .channels = 1, .buswidth = 16, + .qosbox = &qnm_snoc_sf_qos, .num_links = 3, .links = { SM8650_SLAVE_GEM_NOC_CNOC, SM8650_SLAVE_LLCC, SM8650_SLAVE_MEM_NOC_PCIE_SNOC }, }; +static struct qcom_icc_qosbox qnm_ubwc_p_qos = { + .num_ports = 1, + .port_offsets = { 0xc3000 }, + .prio = 1, + .urg_fwd = 1, + .prio_fwd_disable = 1, +}; + static struct qcom_icc_node qnm_ubwc_p = { .name = "qnm_ubwc_p", .id = SM8650_MASTER_UBWC_P, .channels = 1, .buswidth = 32, + .qosbox = &qnm_ubwc_p_qos, .num_links = 1, .links = { SM8650_SLAVE_LLCC }, }; +static struct qcom_icc_qosbox xm_gic_qos = { + .num_ports = 1, + .port_offsets = { 0xb9000 }, + .prio = 4, + .urg_fwd = 0, + .prio_fwd_disable = 1, +}; + static struct qcom_icc_node xm_gic = { .name = "xm_gic", .id = SM8650_MASTER_GIC, .channels = 1, .buswidth = 8, + .qosbox = &xm_gic_qos, .num_links = 1, .links = { SM8650_SLAVE_LLCC }, }; @@ -390,38 +613,74 @@ static struct qcom_icc_node llcc_mc = { .links = { SM8650_SLAVE_EBI1 }, }; +static struct qcom_icc_qosbox qnm_camnoc_hf_qos = { + .num_ports = 2, + .port_offsets = { 0x28000, 0x29000 }, + .prio = 0, + .urg_fwd = 1, + .prio_fwd_disable = 0, +}; + static struct qcom_icc_node qnm_camnoc_hf = { .name = "qnm_camnoc_hf", .id = SM8650_MASTER_CAMNOC_HF, .channels = 2, .buswidth = 32, + .qosbox = &qnm_camnoc_hf_qos, .num_links = 1, .links = { SM8650_SLAVE_MNOC_HF_MEM_NOC }, }; +static struct qcom_icc_qosbox qnm_camnoc_icp_qos = { + .num_ports = 1, + .port_offsets = { 0x2a000 }, + .prio = 4, + .urg_fwd = 1, + .prio_fwd_disable = 0, +}; + static struct qcom_icc_node qnm_camnoc_icp = { .name = "qnm_camnoc_icp", .id = SM8650_MASTER_CAMNOC_ICP, .channels = 1, .buswidth = 8, + .qosbox = &qnm_camnoc_icp_qos, .num_links = 1, .links = { SM8650_SLAVE_MNOC_SF_MEM_NOC }, }; +static struct qcom_icc_qosbox qnm_camnoc_sf_qos = { + .num_ports = 2, + .port_offsets = { 0x2b000, 0x2c000 }, + .prio = 0, + .urg_fwd = 1, + .prio_fwd_disable = 0, +}; + static struct qcom_icc_node qnm_camnoc_sf = { .name = "qnm_camnoc_sf", .id = SM8650_MASTER_CAMNOC_SF, .channels = 2, .buswidth = 32, + .qosbox = &qnm_camnoc_sf_qos, .num_links = 1, .links = { SM8650_SLAVE_MNOC_SF_MEM_NOC }, }; +static struct qcom_icc_qosbox qnm_mdp_qos = { + .num_ports = 2, + .port_offsets = { 0x2d000, 0x2e000 }, + .prio = 0, + .urg_fwd = 1, + .prio_fwd_disable = 0, +}; + static struct qcom_icc_node qnm_mdp = { .name = "qnm_mdp", .id = SM8650_MASTER_MDP, .channels = 2, .buswidth = 32, + .qosbox = &qnm_mdp_qos, .num_links = 1, .links = { SM8650_SLAVE_MNOC_HF_MEM_NOC }, }; @@ -435,38 +694,74 @@ static struct qcom_icc_node qnm_vapss_hcp = { .links = { SM8650_SLAVE_MNOC_SF_MEM_NOC }, }; +static struct qcom_icc_qosbox qnm_video_qos = { + .num_ports = 2, + .port_offsets = { 0x30000, 0x31000 }, + .prio = 0, + .urg_fwd = 1, + .prio_fwd_disable = 0, +}; + static struct qcom_icc_node qnm_video = { .name = "qnm_video", .id = SM8650_MASTER_VIDEO, .channels = 2, .buswidth = 32, + .qosbox = &qnm_video_qos, .num_links = 1, .links = { SM8650_SLAVE_MNOC_SF_MEM_NOC }, }; +static struct qcom_icc_qosbox qnm_video_cv_cpu_qos = { + .num_ports = 1, + .port_offsets = { 0x32000 }, + .prio = 4, + .urg_fwd = 1, + .prio_fwd_disable = 0, +}; + static struct qcom_icc_node qnm_video_cv_cpu = { .name = "qnm_video_cv_cpu", .id = SM8650_MASTER_VIDEO_CV_PROC, .channels = 1, .buswidth = 8, + .qosbox = &qnm_video_cv_cpu_qos, .num_links = 1, .links = { SM8650_SLAVE_MNOC_SF_MEM_NOC }, }; +static struct qcom_icc_qosbox qnm_video_cvp_qos = { + .num_ports = 2, + .port_offsets = { 0x33000, 0x34000 }, + .prio = 0, + .urg_fwd = 1, + .prio_fwd_disable = 0, +}; + static struct qcom_icc_node qnm_video_cvp = { .name = "qnm_video_cvp", .id = SM8650_MASTER_VIDEO_PROC, .channels = 2, .buswidth = 32, + .qosbox = &qnm_video_cvp_qos, .num_links = 1, .links = { SM8650_SLAVE_MNOC_SF_MEM_NOC }, }; +static struct qcom_icc_qosbox qnm_video_v_cpu_qos = { + .num_ports = 1, + .port_offsets = { 0x35000 }, + .prio = 4, + .urg_fwd = 1, + .prio_fwd_disable = 0, +}; + static struct qcom_icc_node qnm_video_v_cpu = { .name = "qnm_video_v_cpu", .id = SM8650_MASTER_VIDEO_V_PROC, .channels = 1, .buswidth = 8, + .qosbox = &qnm_video_v_cpu_qos, .num_links = 1, .links = { SM8650_SLAVE_MNOC_SF_MEM_NOC }, }; @@ -498,20 +793,38 @@ static struct qcom_icc_node qsm_pcie_anoc_cfg = { .links = { SM8650_SLAVE_SERVICE_PCIE_ANOC }, }; +static struct qcom_icc_qosbox xm_pcie3_0_qos = { + .num_ports = 1, + .port_offsets = { 0xb000 }, + .prio = 3, + .urg_fwd = 0, + .prio_fwd_disable = 0, +}; + static struct qcom_icc_node xm_pcie3_0 = { .name = "xm_pcie3_0", .id = SM8650_MASTER_PCIE_0, .channels = 1, .buswidth = 8, + .qosbox = &xm_pcie3_0_qos, .num_links = 1, .links = { SM8650_SLAVE_ANOC_PCIE_GEM_NOC }, }; +static struct qcom_icc_qosbox xm_pcie3_1_qos = { + .num_ports = 1, + .port_offsets = { 0xc000 }, + .prio = 2, + .urg_fwd = 0, + .prio_fwd_disable = 0, +}; + static struct qcom_icc_node xm_pcie3_1 = { .name = "xm_pcie3_1", .id = SM8650_MASTER_PCIE_1, .channels = 1, .buswidth = 16, + .qosbox = &xm_pcie3_1_qos, .num_links = 1, .links = { SM8650_SLAVE_ANOC_PCIE_GEM_NOC }, }; @@ -1325,6 +1638,7 @@ static struct qcom_icc_node * const aggre1_noc_nodes[] = { }; static const struct qcom_icc_desc sm8650_aggre1_noc = { + .config = &icc_regmap_config, .nodes = aggre1_noc_nodes, .num_nodes = ARRAY_SIZE(aggre1_noc_nodes), }; @@ -1346,6 +1660,7 @@ static struct qcom_icc_node * const aggre2_noc_nodes[] = { }; static const struct qcom_icc_desc sm8650_aggre2_noc = { + .config = &icc_regmap_config, .nodes = aggre2_noc_nodes, .num_nodes = ARRAY_SIZE(aggre2_noc_nodes), .bcms = aggre2_noc_bcms, @@ -1368,6 +1683,7 @@ static struct qcom_icc_node * const clk_virt_nodes[] = { }; static const struct qcom_icc_desc sm8650_clk_virt = { + .config = &icc_regmap_config, .nodes = clk_virt_nodes, .num_nodes = ARRAY_SIZE(clk_virt_nodes), .bcms = clk_virt_bcms, @@ -1429,6 +1745,7 @@ static struct qcom_icc_node * const config_noc_nodes[] = { }; static const struct qcom_icc_desc sm8650_config_noc = { + .config = &icc_regmap_config, .nodes = config_noc_nodes, .num_nodes = ARRAY_SIZE(config_noc_nodes), .bcms = config_noc_bcms, @@ -1456,6 +1773,7 @@ static struct qcom_icc_node * const cnoc_main_nodes[] = { }; static const struct qcom_icc_desc sm8650_cnoc_main = { + .config = &icc_regmap_config, .nodes = cnoc_main_nodes, .num_nodes = ARRAY_SIZE(cnoc_main_nodes), .bcms = cnoc_main_bcms, @@ -1488,6 +1806,7 @@ static struct qcom_icc_node * const gem_noc_nodes[] = { }; static const struct qcom_icc_desc sm8650_gem_noc = { + .config = &icc_regmap_config, .nodes = gem_noc_nodes, .num_nodes = ARRAY_SIZE(gem_noc_nodes), .bcms = gem_noc_bcms, @@ -1500,6 +1819,7 @@ static struct qcom_icc_node * const lpass_ag_noc_nodes[] = { }; static const struct qcom_icc_desc sm8650_lpass_ag_noc = { + .config = &icc_regmap_config, .nodes = lpass_ag_noc_nodes, .num_nodes = ARRAY_SIZE(lpass_ag_noc_nodes), }; @@ -1514,6 +1834,7 @@ static struct qcom_icc_node * const lpass_lpiaon_noc_nodes[] = { }; static const struct qcom_icc_desc sm8650_lpass_lpiaon_noc = { + .config = &icc_regmap_config, .nodes = lpass_lpiaon_noc_nodes, .num_nodes = ARRAY_SIZE(lpass_lpiaon_noc_nodes), .bcms = lpass_lpiaon_noc_bcms, @@ -1526,6 +1847,7 @@ static struct qcom_icc_node * const lpass_lpicx_noc_nodes[] = { }; static const struct qcom_icc_desc sm8650_lpass_lpicx_noc = { + .config = &icc_regmap_config, .nodes = lpass_lpicx_noc_nodes, .num_nodes = ARRAY_SIZE(lpass_lpicx_noc_nodes), }; @@ -1541,6 +1863,7 @@ static struct qcom_icc_node * const mc_virt_nodes[] = { }; static const struct qcom_icc_desc sm8650_mc_virt = { + .config = &icc_regmap_config, .nodes = mc_virt_nodes, .num_nodes = ARRAY_SIZE(mc_virt_nodes), .bcms = mc_virt_bcms, @@ -1569,6 +1892,7 @@ static struct qcom_icc_node * const mmss_noc_nodes[] = { }; static const struct qcom_icc_desc sm8650_mmss_noc = { + .config = &icc_regmap_config, .nodes = mmss_noc_nodes, .num_nodes = ARRAY_SIZE(mmss_noc_nodes), .bcms = mmss_noc_bcms, @@ -1585,6 +1909,7 @@ static struct qcom_icc_node * const nsp_noc_nodes[] = { }; static const struct qcom_icc_desc sm8650_nsp_noc = { + .config = &icc_regmap_config, .nodes = nsp_noc_nodes, .num_nodes = ARRAY_SIZE(nsp_noc_nodes), .bcms = nsp_noc_bcms, @@ -1604,6 +1929,7 @@ static struct qcom_icc_node * const pcie_anoc_nodes[] = { }; static const struct qcom_icc_desc sm8650_pcie_anoc = { + .config = &icc_regmap_config, .nodes = pcie_anoc_nodes, .num_nodes = ARRAY_SIZE(pcie_anoc_nodes), .bcms = pcie_anoc_bcms, @@ -1623,6 +1949,7 @@ static struct qcom_icc_node * const system_noc_nodes[] = { }; static const struct qcom_icc_desc sm8650_system_noc = { + .config = &icc_regmap_config, .nodes = system_noc_nodes, .num_nodes = ARRAY_SIZE(system_noc_nodes), .bcms = system_noc_bcms, -- cgit v1.2.3 From c5c967733c5e187bc8f9993f3e8acee65d3215f2 Mon Sep 17 00:00:00 2001 From: Neil Armstrong Date: Tue, 15 Apr 2025 16:03:47 +0200 Subject: dt-bindings: interconnect: sm8650: document the MASTER_APSS_NOC Document the MASTER_APSS_NOC interconnect node for the SM8650 SoC system NoC. Signed-off-by: Neil Armstrong Acked-by: "Rob Herring (Arm)" Link: https://lore.kernel.org/r/20250415-topic-sm8650-upstream-icc-apss-noc-v1-1-9e6bea3943d8@linaro.org Signed-off-by: Georgi Djakov --- include/dt-bindings/interconnect/qcom,sm8650-rpmh.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/dt-bindings/interconnect/qcom,sm8650-rpmh.h b/include/dt-bindings/interconnect/qcom,sm8650-rpmh.h index 6c1eaf04e241..1216aa352d55 100644 --- a/include/dt-bindings/interconnect/qcom,sm8650-rpmh.h +++ b/include/dt-bindings/interconnect/qcom,sm8650-rpmh.h @@ -150,5 +150,6 @@ #define MASTER_A1NOC_SNOC 0 #define MASTER_A2NOC_SNOC 1 #define SLAVE_SNOC_GEM_NOC_SF 2 +#define MASTER_APSS_NOC 3 #endif -- cgit v1.2.3 From 463f2eaa203aa04373cce87d9475fb9cdb09c8d9 Mon Sep 17 00:00:00 2001 From: Neil Armstrong Date: Tue, 15 Apr 2025 16:03:48 +0200 Subject: interconnect: qcom: sm8650: add the MASTER_APSS_NOC Add the MASTER_APSS_NOC interconnect node of the system NoC and the associated QoS configuration. Signed-off-by: Neil Armstrong Reviewed-by: Dmitry Baryshkov Link: https://lore.kernel.org/r/20250415-topic-sm8650-upstream-icc-apss-noc-v1-2-9e6bea3943d8@linaro.org Signed-off-by: Georgi Djakov --- drivers/interconnect/qcom/sm8650.c | 19 +++++++++++++++++++ drivers/interconnect/qcom/sm8650.h | 1 + 2 files changed, 20 insertions(+) diff --git a/drivers/interconnect/qcom/sm8650.c b/drivers/interconnect/qcom/sm8650.c index f6911891503a..1eb2cc3bea67 100644 --- a/drivers/interconnect/qcom/sm8650.c +++ b/drivers/interconnect/qcom/sm8650.c @@ -847,6 +847,24 @@ static struct qcom_icc_node qnm_aggre2_noc = { .links = { SM8650_SLAVE_SNOC_GEM_NOC_SF }, }; +static struct qcom_icc_qosbox qnm_apss_noc_qos = { + .num_ports = 1, + .port_offsets = { 0x1c000 }, + .prio = 2, + .urg_fwd = 0, + .prio_fwd_disable = 1, +}; + +static struct qcom_icc_node qnm_apss_noc = { + .name = "qnm_apss_noc", + .id = SM8650_MASTER_APSS_NOC, + .channels = 1, + .buswidth = 4, + .qosbox = &qnm_apss_noc_qos, + .num_links = 1, + .links = { SM8650_SLAVE_SNOC_GEM_NOC_SF }, +}; + static struct qcom_icc_node qns_a1noc_snoc = { .name = "qns_a1noc_snoc", .id = SM8650_SLAVE_A1NOC_SNOC, @@ -1946,6 +1964,7 @@ static struct qcom_icc_node * const system_noc_nodes[] = { [MASTER_A1NOC_SNOC] = &qnm_aggre1_noc, [MASTER_A2NOC_SNOC] = &qnm_aggre2_noc, [SLAVE_SNOC_GEM_NOC_SF] = &qns_gemnoc_sf, + [MASTER_APSS_NOC] = &qnm_apss_noc, }; static const struct qcom_icc_desc sm8650_system_noc = { diff --git a/drivers/interconnect/qcom/sm8650.h b/drivers/interconnect/qcom/sm8650.h index de35c956fe49..b6610225b38a 100644 --- a/drivers/interconnect/qcom/sm8650.h +++ b/drivers/interconnect/qcom/sm8650.h @@ -139,5 +139,6 @@ #define SM8650_SLAVE_USB3_0 127 #define SM8650_SLAVE_VENUS_CFG 128 #define SM8650_SLAVE_VSENSE_CTRL_CFG 129 +#define SM8650_MASTER_APSS_NOC 130 #endif -- cgit v1.2.3 From 9f52aecc952ddf307571517d5c91136c8c4e87c9 Mon Sep 17 00:00:00 2001 From: Junhao He Date: Wed, 18 Sep 2024 11:53:27 +0800 Subject: coresight: Fixes device's owner field for registered using coresight_init_driver() The coresight_init_driver() of the coresight-core module is called from the sub coresgiht device (such as tmc/stm/funnle/...) module. It calls amba_driver_register() and Platform_driver_register(), which are macro functions that use the coresight-core's module to initialize the caller's owner field. Therefore, when the sub coresight device calls coresight_init_driver(), an incorrect THIS_MODULE value is captured. The sub coesgiht modules can be removed while their callbacks are running, resulting in a general protection failure. Add module parameter to coresight_init_driver() so can be called with the module of the callback. Fixes: 075b7cd7ad7d ("coresight: Add helpers registering/removing both AMBA and platform drivers") Signed-off-by: Junhao He Signed-off-by: Suzuki K Poulose Link: https://lore.kernel.org/r/20240918035327.9710-1-hejunhao3@huawei.com --- drivers/hwtracing/coresight/coresight-catu.c | 2 +- drivers/hwtracing/coresight/coresight-core.c | 6 +++--- drivers/hwtracing/coresight/coresight-cpu-debug.c | 3 ++- drivers/hwtracing/coresight/coresight-funnel.c | 3 ++- drivers/hwtracing/coresight/coresight-replicator.c | 3 ++- drivers/hwtracing/coresight/coresight-stm.c | 2 +- drivers/hwtracing/coresight/coresight-tmc-core.c | 2 +- drivers/hwtracing/coresight/coresight-tpiu.c | 2 +- include/linux/coresight.h | 2 +- 9 files changed, 14 insertions(+), 11 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-catu.c b/drivers/hwtracing/coresight/coresight-catu.c index fa170c966bc3..96cb48b140af 100644 --- a/drivers/hwtracing/coresight/coresight-catu.c +++ b/drivers/hwtracing/coresight/coresight-catu.c @@ -702,7 +702,7 @@ static int __init catu_init(void) { int ret; - ret = coresight_init_driver("catu", &catu_driver, &catu_platform_driver); + ret = coresight_init_driver("catu", &catu_driver, &catu_platform_driver, THIS_MODULE); tmc_etr_set_catu_ops(&etr_catu_buf_ops); return ret; } diff --git a/drivers/hwtracing/coresight/coresight-core.c b/drivers/hwtracing/coresight/coresight-core.c index fb43ef6a3b1f..dabec7073aed 100644 --- a/drivers/hwtracing/coresight/coresight-core.c +++ b/drivers/hwtracing/coresight/coresight-core.c @@ -1585,17 +1585,17 @@ module_init(coresight_init); module_exit(coresight_exit); int coresight_init_driver(const char *drv, struct amba_driver *amba_drv, - struct platform_driver *pdev_drv) + struct platform_driver *pdev_drv, struct module *owner) { int ret; - ret = amba_driver_register(amba_drv); + ret = __amba_driver_register(amba_drv, owner); if (ret) { pr_err("%s: error registering AMBA driver\n", drv); return ret; } - ret = platform_driver_register(pdev_drv); + ret = __platform_driver_register(pdev_drv, owner); if (!ret) return 0; diff --git a/drivers/hwtracing/coresight/coresight-cpu-debug.c b/drivers/hwtracing/coresight/coresight-cpu-debug.c index 342c3aaf414d..a871d997330b 100644 --- a/drivers/hwtracing/coresight/coresight-cpu-debug.c +++ b/drivers/hwtracing/coresight/coresight-cpu-debug.c @@ -774,7 +774,8 @@ static struct platform_driver debug_platform_driver = { static int __init debug_init(void) { - return coresight_init_driver("debug", &debug_driver, &debug_platform_driver); + return coresight_init_driver("debug", &debug_driver, &debug_platform_driver, + THIS_MODULE); } static void __exit debug_exit(void) diff --git a/drivers/hwtracing/coresight/coresight-funnel.c b/drivers/hwtracing/coresight/coresight-funnel.c index 0541712b2bcb..124fc2e26cfb 100644 --- a/drivers/hwtracing/coresight/coresight-funnel.c +++ b/drivers/hwtracing/coresight/coresight-funnel.c @@ -433,7 +433,8 @@ static struct amba_driver dynamic_funnel_driver = { static int __init funnel_init(void) { - return coresight_init_driver("funnel", &dynamic_funnel_driver, &funnel_driver); + return coresight_init_driver("funnel", &dynamic_funnel_driver, &funnel_driver, + THIS_MODULE); } static void __exit funnel_exit(void) diff --git a/drivers/hwtracing/coresight/coresight-replicator.c b/drivers/hwtracing/coresight/coresight-replicator.c index ee7ee79f6cf7..572dcd2bac16 100644 --- a/drivers/hwtracing/coresight/coresight-replicator.c +++ b/drivers/hwtracing/coresight/coresight-replicator.c @@ -438,7 +438,8 @@ static struct amba_driver dynamic_replicator_driver = { static int __init replicator_init(void) { - return coresight_init_driver("replicator", &dynamic_replicator_driver, &replicator_driver); + return coresight_init_driver("replicator", &dynamic_replicator_driver, &replicator_driver, + THIS_MODULE); } static void __exit replicator_exit(void) diff --git a/drivers/hwtracing/coresight/coresight-stm.c b/drivers/hwtracing/coresight/coresight-stm.c index 26f9339f38b9..527347e4d16c 100644 --- a/drivers/hwtracing/coresight/coresight-stm.c +++ b/drivers/hwtracing/coresight/coresight-stm.c @@ -1058,7 +1058,7 @@ static struct platform_driver stm_platform_driver = { static int __init stm_init(void) { - return coresight_init_driver("stm", &stm_driver, &stm_platform_driver); + return coresight_init_driver("stm", &stm_driver, &stm_platform_driver, THIS_MODULE); } static void __exit stm_exit(void) diff --git a/drivers/hwtracing/coresight/coresight-tmc-core.c b/drivers/hwtracing/coresight/coresight-tmc-core.c index a7814e8e657b..455b1c9b1568 100644 --- a/drivers/hwtracing/coresight/coresight-tmc-core.c +++ b/drivers/hwtracing/coresight/coresight-tmc-core.c @@ -1060,7 +1060,7 @@ static struct platform_driver tmc_platform_driver = { static int __init tmc_init(void) { - return coresight_init_driver("tmc", &tmc_driver, &tmc_platform_driver); + return coresight_init_driver("tmc", &tmc_driver, &tmc_platform_driver, THIS_MODULE); } static void __exit tmc_exit(void) diff --git a/drivers/hwtracing/coresight/coresight-tpiu.c b/drivers/hwtracing/coresight/coresight-tpiu.c index 97ef36f03ec2..3e0159288428 100644 --- a/drivers/hwtracing/coresight/coresight-tpiu.c +++ b/drivers/hwtracing/coresight/coresight-tpiu.c @@ -318,7 +318,7 @@ static struct platform_driver tpiu_platform_driver = { static int __init tpiu_init(void) { - return coresight_init_driver("tpiu", &tpiu_driver, &tpiu_platform_driver); + return coresight_init_driver("tpiu", &tpiu_driver, &tpiu_platform_driver, THIS_MODULE); } static void __exit tpiu_exit(void) diff --git a/include/linux/coresight.h b/include/linux/coresight.h index d79a242b271d..cfcf6e4707ed 100644 --- a/include/linux/coresight.h +++ b/include/linux/coresight.h @@ -723,7 +723,7 @@ coresight_find_output_type(struct coresight_platform_data *pdata, union coresight_dev_subtype subtype); int coresight_init_driver(const char *drv, struct amba_driver *amba_drv, - struct platform_driver *pdev_drv); + struct platform_driver *pdev_drv, struct module *owner); void coresight_remove_driver(struct amba_driver *amba_drv, struct platform_driver *pdev_drv); -- cgit v1.2.3 From 13e3a882bc85d22861b87bfd140d11989fbe3f83 Mon Sep 17 00:00:00 2001 From: Dmitry Baryshkov Date: Fri, 25 Apr 2025 20:47:06 +0300 Subject: dt-bindings: arm: arm,coresight-static-replicator: add optional clocks As most other CoreSight devices the replicator can use either of the optional clocks. Document those optional clocks in the schema. Additionally document the one-off case of Zynq-7000 platforms which uses apb_pclk and two additional debug clocks. Fixes: 3c15fddf3121 ("dt-bindings: arm: Convert CoreSight bindings to DT schema") Reviewed-by: Rob Herring (Arm) Signed-off-by: Dmitry Baryshkov Signed-off-by: Suzuki K Poulose Link: https://lore.kernel.org/r/20250425-fix-nexus-4-v3-6-da4e39e86d41@oss.qualcomm.com --- .../bindings/arm/arm,coresight-static-replicator.yaml | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/Documentation/devicetree/bindings/arm/arm,coresight-static-replicator.yaml b/Documentation/devicetree/bindings/arm/arm,coresight-static-replicator.yaml index a6f793ea03b6..0c1017affbad 100644 --- a/Documentation/devicetree/bindings/arm/arm,coresight-static-replicator.yaml +++ b/Documentation/devicetree/bindings/arm/arm,coresight-static-replicator.yaml @@ -30,6 +30,19 @@ properties: power-domains: maxItems: 1 + clocks: + minItems: 1 + maxItems: 3 + + clock-names: + oneOf: + - items: + - enum: [apb_pclk, atclk] + - items: # Zynq-700 + - const: apb_pclk + - const: dbg_trc + - const: dbg_apb + in-ports: $ref: /schemas/graph.yaml#/properties/ports additionalProperties: false -- cgit v1.2.3 From a03a0a08c6fe5e50c1b12ea41b9e228e7f649c22 Mon Sep 17 00:00:00 2001 From: Yabin Cui Date: Tue, 29 Apr 2025 16:12:59 -0700 Subject: coresight: catu: Introduce refcount and spinlock for enabling/disabling When tracing ETM data on multiple CPUs concurrently via the perf interface, the CATU device is shared across different CPU paths. This can lead to race conditions when multiple CPUs attempt to enable or disable the CATU device simultaneously. To address these race conditions, this patch introduces the following changes: 1. The enable and disable operations for the CATU device are not reentrant. Therefore, a spinlock is added to ensure that only one CPU can enable or disable a given CATU device at any point in time. 2. A reference counter is used to manage the enable/disable state of the CATU device. The device is enabled when the first CPU requires it and is only disabled when the last CPU finishes using it. This ensures the device remains active as long as at least one CPU needs it. Fixes: fcacb5c154ba ("coresight: Introduce support for Coresight Address Translation Unit") Signed-off-by: Yabin Cui Reviewed-by: James Clark Reviewed-by: Leo Yan Signed-off-by: Suzuki K Poulose Link: https://lore.kernel.org/r/20250429231301.1952246-2-yabinc@google.com --- drivers/hwtracing/coresight/coresight-catu.c | 25 +++++++++++++++++-------- drivers/hwtracing/coresight/coresight-catu.h | 1 + 2 files changed, 18 insertions(+), 8 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-catu.c b/drivers/hwtracing/coresight/coresight-catu.c index 96cb48b140af..d4e2e175e077 100644 --- a/drivers/hwtracing/coresight/coresight-catu.c +++ b/drivers/hwtracing/coresight/coresight-catu.c @@ -458,12 +458,17 @@ static int catu_enable_hw(struct catu_drvdata *drvdata, enum cs_mode cs_mode, static int catu_enable(struct coresight_device *csdev, enum cs_mode mode, void *data) { - int rc; + int rc = 0; struct catu_drvdata *catu_drvdata = csdev_to_catu_drvdata(csdev); - CS_UNLOCK(catu_drvdata->base); - rc = catu_enable_hw(catu_drvdata, mode, data); - CS_LOCK(catu_drvdata->base); + guard(raw_spinlock_irqsave)(&catu_drvdata->spinlock); + if (csdev->refcnt == 0) { + CS_UNLOCK(catu_drvdata->base); + rc = catu_enable_hw(catu_drvdata, mode, data); + CS_LOCK(catu_drvdata->base); + } + if (!rc) + csdev->refcnt++; return rc; } @@ -486,12 +491,15 @@ static int catu_disable_hw(struct catu_drvdata *drvdata) static int catu_disable(struct coresight_device *csdev, void *__unused) { - int rc; + int rc = 0; struct catu_drvdata *catu_drvdata = csdev_to_catu_drvdata(csdev); - CS_UNLOCK(catu_drvdata->base); - rc = catu_disable_hw(catu_drvdata); - CS_LOCK(catu_drvdata->base); + guard(raw_spinlock_irqsave)(&catu_drvdata->spinlock); + if (--csdev->refcnt == 0) { + CS_UNLOCK(catu_drvdata->base); + rc = catu_disable_hw(catu_drvdata); + CS_LOCK(catu_drvdata->base); + } return rc; } @@ -550,6 +558,7 @@ static int __catu_probe(struct device *dev, struct resource *res) dev->platform_data = pdata; drvdata->base = base; + raw_spin_lock_init(&drvdata->spinlock); catu_desc.access = CSDEV_ACCESS_IOMEM(base); catu_desc.pdata = pdata; catu_desc.dev = dev; diff --git a/drivers/hwtracing/coresight/coresight-catu.h b/drivers/hwtracing/coresight/coresight-catu.h index 141feac1c14b..755776cd19c5 100644 --- a/drivers/hwtracing/coresight/coresight-catu.h +++ b/drivers/hwtracing/coresight/coresight-catu.h @@ -65,6 +65,7 @@ struct catu_drvdata { void __iomem *base; struct coresight_device *csdev; int irq; + raw_spinlock_t spinlock; }; #define CATU_REG32(name, offset) \ -- cgit v1.2.3 From f6028eeeb5e4cf86f93f805098c84974a79bba8a Mon Sep 17 00:00:00 2001 From: Yabin Cui Date: Tue, 29 Apr 2025 16:13:00 -0700 Subject: coresight: core: Disable helpers for devices that fail to enable When enabling a SINK or LINK type coresight device fails, the associated helpers should be disabled. Fixes: 6148652807ba ("coresight: Enable and disable helper devices adjacent to the path") Signed-off-by: Yabin Cui Suggested-by: Suzuki K Poulose Reviewed-by: James Clark Reviewed-by: Mike Leach Reviewed-by: Leo Yan Signed-off-by: Suzuki K Poulose Link: https://lore.kernel.org/r/20250429231301.1952246-3-yabinc@google.com --- drivers/hwtracing/coresight/coresight-core.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-core.c b/drivers/hwtracing/coresight/coresight-core.c index dabec7073aed..d3523f0262af 100644 --- a/drivers/hwtracing/coresight/coresight-core.c +++ b/drivers/hwtracing/coresight/coresight-core.c @@ -465,7 +465,7 @@ int coresight_enable_path(struct coresight_path *path, enum cs_mode mode, /* Enable all helpers adjacent to the path first */ ret = coresight_enable_helpers(csdev, mode, path); if (ret) - goto err; + goto err_disable_path; /* * ETF devices are tricky... They can be a link or a sink, * depending on how they are configured. If an ETF has been @@ -486,8 +486,10 @@ int coresight_enable_path(struct coresight_path *path, enum cs_mode mode, * that need disabling. Disabling the path here * would mean we could disrupt an existing session. */ - if (ret) + if (ret) { + coresight_disable_helpers(csdev, path); goto out; + } break; case CORESIGHT_DEV_TYPE_SOURCE: /* sources are enabled from either sysFS or Perf */ @@ -497,16 +499,19 @@ int coresight_enable_path(struct coresight_path *path, enum cs_mode mode, child = list_next_entry(nd, link)->csdev; ret = coresight_enable_link(csdev, parent, child, source); if (ret) - goto err; + goto err_disable_helpers; break; default: - goto err; + ret = -EINVAL; + goto err_disable_helpers; } } out: return ret; -err: +err_disable_helpers: + coresight_disable_helpers(csdev, path); +err_disable_path: coresight_disable_path_from(path, nd); goto out; } -- cgit v1.2.3 From fc7fed6f77f94f2fd9a7557020503e146eb0ce38 Mon Sep 17 00:00:00 2001 From: James Clark Date: Tue, 25 Mar 2025 11:58:46 +0000 Subject: coresight: Convert tag clear function to take a struct csdev_access The self hosted claim tag will be reset on device probe in a later commit. We'll want to do this before coresight_register() is called so won't have a coresight_device and have to use csdev_access instead. Also make them public and create locked and unlocked versions for later use. These look functions look like they set the whole tags register as one value, but they only set and clear the self hosted bit using a SET/CLR bits mechanism so also rename the functions to reflect this better. Reviewed-by: Leo Yan Reviewed-by: Yeoreum Yun Signed-off-by: James Clark Signed-off-by: Suzuki K Poulose Link: https://lore.kernel.org/r/20250325-james-coresight-claim-tags-v4-1-dfbd3822b2e5@linaro.org --- drivers/hwtracing/coresight/coresight-core.c | 33 ++++++++++++++++++---------- include/linux/coresight.h | 3 ++- 2 files changed, 24 insertions(+), 12 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-core.c b/drivers/hwtracing/coresight/coresight-core.c index d3523f0262af..17f931f7e616 100644 --- a/drivers/hwtracing/coresight/coresight-core.c +++ b/drivers/hwtracing/coresight/coresight-core.c @@ -129,34 +129,45 @@ coresight_find_out_connection(struct coresight_device *csdev, return ERR_PTR(-ENODEV); } -static inline u32 coresight_read_claim_tags(struct coresight_device *csdev) +static inline u32 coresight_read_claim_tags_unlocked(struct coresight_device *csdev) { return csdev_access_relaxed_read32(&csdev->access, CORESIGHT_CLAIMCLR); } static inline bool coresight_is_claimed_self_hosted(struct coresight_device *csdev) { - return coresight_read_claim_tags(csdev) == CORESIGHT_CLAIM_SELF_HOSTED; + return coresight_read_claim_tags_unlocked(csdev) == CORESIGHT_CLAIM_SELF_HOSTED; } static inline bool coresight_is_claimed_any(struct coresight_device *csdev) { - return coresight_read_claim_tags(csdev) != 0; + return coresight_read_claim_tags_unlocked(csdev) != 0; } -static inline void coresight_set_claim_tags(struct coresight_device *csdev) +static inline void coresight_set_self_claim_tag_unlocked(struct coresight_device *csdev) { csdev_access_relaxed_write32(&csdev->access, CORESIGHT_CLAIM_SELF_HOSTED, CORESIGHT_CLAIMSET); isb(); } -static inline void coresight_clear_claim_tags(struct coresight_device *csdev) +void coresight_clear_self_claim_tag(struct csdev_access *csa) { - csdev_access_relaxed_write32(&csdev->access, CORESIGHT_CLAIM_SELF_HOSTED, + if (csa->io_mem) + CS_UNLOCK(csa->base); + coresight_clear_self_claim_tag_unlocked(csa); + if (csa->io_mem) + CS_LOCK(csa->base); +} +EXPORT_SYMBOL_GPL(coresight_clear_self_claim_tag); + +void coresight_clear_self_claim_tag_unlocked(struct csdev_access *csa) +{ + csdev_access_relaxed_write32(csa, CORESIGHT_CLAIM_SELF_HOSTED, CORESIGHT_CLAIMCLR); isb(); } +EXPORT_SYMBOL_GPL(coresight_clear_self_claim_tag_unlocked); /* * coresight_claim_device_unlocked : Claim the device for self-hosted usage @@ -176,11 +187,11 @@ int coresight_claim_device_unlocked(struct coresight_device *csdev) if (coresight_is_claimed_any(csdev)) return -EBUSY; - coresight_set_claim_tags(csdev); + coresight_set_self_claim_tag_unlocked(csdev); if (coresight_is_claimed_self_hosted(csdev)) return 0; - /* There was a race setting the tags, clean up and fail */ - coresight_clear_claim_tags(csdev); + /* There was a race setting the tag, clean up and fail */ + coresight_clear_self_claim_tag_unlocked(&csdev->access); return -EBUSY; } EXPORT_SYMBOL_GPL(coresight_claim_device_unlocked); @@ -201,7 +212,7 @@ int coresight_claim_device(struct coresight_device *csdev) EXPORT_SYMBOL_GPL(coresight_claim_device); /* - * coresight_disclaim_device_unlocked : Clear the claim tags for the device. + * coresight_disclaim_device_unlocked : Clear the claim tag for the device. * Called with CS_UNLOCKed for the component. */ void coresight_disclaim_device_unlocked(struct coresight_device *csdev) @@ -211,7 +222,7 @@ void coresight_disclaim_device_unlocked(struct coresight_device *csdev) return; if (coresight_is_claimed_self_hosted(csdev)) - coresight_clear_claim_tags(csdev); + coresight_clear_self_claim_tag_unlocked(&csdev->access); else /* * The external agent may have not honoured our claim diff --git a/include/linux/coresight.h b/include/linux/coresight.h index cfcf6e4707ed..b89692d9ceac 100644 --- a/include/linux/coresight.h +++ b/include/linux/coresight.h @@ -685,7 +685,8 @@ extern int coresight_timeout_action(struct csdev_access *csa, u32 offset, extern int coresight_claim_device(struct coresight_device *csdev); extern int coresight_claim_device_unlocked(struct coresight_device *csdev); - +void coresight_clear_self_claim_tag(struct csdev_access *csa); +void coresight_clear_self_claim_tag_unlocked(struct csdev_access *csa); extern void coresight_disclaim_device(struct coresight_device *csdev); extern void coresight_disclaim_device_unlocked(struct coresight_device *csdev); extern char *coresight_alloc_device_name(struct coresight_dev_list *devs, -- cgit v1.2.3 From a4e65842e1142aa18ef36113fbd81d614eaefe5a Mon Sep 17 00:00:00 2001 From: James Clark Date: Tue, 25 Mar 2025 11:58:47 +0000 Subject: coresight: Only check bottom two claim bits The use of the whole register and == could break the claim mechanism if any of the other bits are used in the future. The referenced doc "PSCI - ARM DEN 0022D" also says to only read and clear the bottom two bits. Use FIELD_GET() to extract only the relevant part. Reviewed-by: Leo Yan Reviewed-by: Yeoreum Yun Signed-off-by: James Clark Signed-off-by: Suzuki K Poulose Link: https://lore.kernel.org/r/20250325-james-coresight-claim-tags-v4-2-dfbd3822b2e5@linaro.org --- drivers/hwtracing/coresight/coresight-core.c | 3 ++- drivers/hwtracing/coresight/coresight-priv.h | 1 + 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/hwtracing/coresight/coresight-core.c b/drivers/hwtracing/coresight/coresight-core.c index 17f931f7e616..9f183064285d 100644 --- a/drivers/hwtracing/coresight/coresight-core.c +++ b/drivers/hwtracing/coresight/coresight-core.c @@ -131,7 +131,8 @@ coresight_find_out_connection(struct coresight_device *csdev, static inline u32 coresight_read_claim_tags_unlocked(struct coresight_device *csdev) { - return csdev_access_relaxed_read32(&csdev->access, CORESIGHT_CLAIMCLR); + return FIELD_GET(CORESIGHT_CLAIM_MASK, + csdev_access_relaxed_read32(&csdev->access, CORESIGHT_CLAIMCLR)); } static inline bool coresight_is_claimed_self_hosted(struct coresight_device *csdev) diff --git a/drivers/hwtracing/coresight/coresight-priv.h b/drivers/hwtracing/coresight/coresight-priv.h index 82644aff8d2b..38bb4e8b50ef 100644 --- a/drivers/hwtracing/coresight/coresight-priv.h +++ b/drivers/hwtracing/coresight/coresight-priv.h @@ -35,6 +35,7 @@ extern const struct device_type coresight_dev_type[]; * Coresight device CLAIM protocol. * See PSCI - ARM DEN 0022D, Section: 6.8.1 Debug and Trace save and restore. */ +#define CORESIGHT_CLAIM_MASK GENMASK(1, 0) #define CORESIGHT_CLAIM_SELF_HOSTED BIT(1) #define TIMEOUT_US 100 -- cgit v1.2.3 From a244a18c15fef479bce3eee68ffcab4a393b7b51 Mon Sep 17 00:00:00 2001 From: James Clark Date: Tue, 25 Mar 2025 11:58:48 +0000 Subject: coresight: Add claim tag warnings and debug messages Add a dev_dbg() message so that external debugger conflicts are more visible. There are multiple reasons for -EBUSY so a message for this particular one could be helpful. Add errors for and enumerate all the other cases that are impossible. Reviewed-by: Leo Yan Reviewed-by: Yeoreum Yun Signed-off-by: James Clark Signed-off-by: Suzuki K Poulose Link: https://lore.kernel.org/r/20250325-james-coresight-claim-tags-v4-3-dfbd3822b2e5@linaro.org --- drivers/hwtracing/coresight/coresight-core.c | 51 +++++++++++++++++----------- drivers/hwtracing/coresight/coresight-priv.h | 5 ++- 2 files changed, 36 insertions(+), 20 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-core.c b/drivers/hwtracing/coresight/coresight-core.c index 9f183064285d..8f2a40510b09 100644 --- a/drivers/hwtracing/coresight/coresight-core.c +++ b/drivers/hwtracing/coresight/coresight-core.c @@ -135,16 +135,6 @@ static inline u32 coresight_read_claim_tags_unlocked(struct coresight_device *cs csdev_access_relaxed_read32(&csdev->access, CORESIGHT_CLAIMCLR)); } -static inline bool coresight_is_claimed_self_hosted(struct coresight_device *csdev) -{ - return coresight_read_claim_tags_unlocked(csdev) == CORESIGHT_CLAIM_SELF_HOSTED; -} - -static inline bool coresight_is_claimed_any(struct coresight_device *csdev) -{ - return coresight_read_claim_tags_unlocked(csdev) != 0; -} - static inline void coresight_set_self_claim_tag_unlocked(struct coresight_device *csdev) { csdev_access_relaxed_write32(&csdev->access, CORESIGHT_CLAIM_SELF_HOSTED, @@ -182,18 +172,41 @@ EXPORT_SYMBOL_GPL(coresight_clear_self_claim_tag_unlocked); */ int coresight_claim_device_unlocked(struct coresight_device *csdev) { + int tag; + struct csdev_access *csa; + if (WARN_ON(!csdev)) return -EINVAL; - if (coresight_is_claimed_any(csdev)) + csa = &csdev->access; + tag = coresight_read_claim_tags_unlocked(csdev); + + switch (tag) { + case CORESIGHT_CLAIM_FREE: + coresight_set_self_claim_tag_unlocked(csdev); + if (coresight_read_claim_tags_unlocked(csdev) == CORESIGHT_CLAIM_SELF_HOSTED) + return 0; + + /* There was a race setting the tag, clean up and fail */ + coresight_clear_self_claim_tag_unlocked(csa); + dev_dbg(&csdev->dev, "Busy: Couldn't set self claim tag"); return -EBUSY; - coresight_set_self_claim_tag_unlocked(csdev); - if (coresight_is_claimed_self_hosted(csdev)) - return 0; - /* There was a race setting the tag, clean up and fail */ - coresight_clear_self_claim_tag_unlocked(&csdev->access); - return -EBUSY; + case CORESIGHT_CLAIM_EXTERNAL: + /* External debug is an expected state, so log and report BUSY */ + dev_dbg(&csdev->dev, "Busy: Claimed by external debugger"); + return -EBUSY; + + default: + case CORESIGHT_CLAIM_SELF_HOSTED: + case CORESIGHT_CLAIM_INVALID: + /* + * Warn here because we clear a lingering self hosted tag + * on probe, so other tag combinations are impossible. + */ + dev_err_once(&csdev->dev, "Invalid claim tag state: %x", tag); + return -EBUSY; + } } EXPORT_SYMBOL_GPL(coresight_claim_device_unlocked); @@ -222,7 +235,7 @@ void coresight_disclaim_device_unlocked(struct coresight_device *csdev) if (WARN_ON(!csdev)) return; - if (coresight_is_claimed_self_hosted(csdev)) + if (coresight_read_claim_tags_unlocked(csdev) == CORESIGHT_CLAIM_SELF_HOSTED) coresight_clear_self_claim_tag_unlocked(&csdev->access); else /* @@ -230,7 +243,7 @@ void coresight_disclaim_device_unlocked(struct coresight_device *csdev) * and has manipulated it. Or something else has seriously * gone wrong in our driver. */ - WARN_ON_ONCE(1); + dev_WARN_ONCE(&csdev->dev, 1, "External agent took claim tag"); } EXPORT_SYMBOL_GPL(coresight_disclaim_device_unlocked); diff --git a/drivers/hwtracing/coresight/coresight-priv.h b/drivers/hwtracing/coresight/coresight-priv.h index 38bb4e8b50ef..6e8cf55aee0a 100644 --- a/drivers/hwtracing/coresight/coresight-priv.h +++ b/drivers/hwtracing/coresight/coresight-priv.h @@ -36,7 +36,10 @@ extern const struct device_type coresight_dev_type[]; * See PSCI - ARM DEN 0022D, Section: 6.8.1 Debug and Trace save and restore. */ #define CORESIGHT_CLAIM_MASK GENMASK(1, 0) -#define CORESIGHT_CLAIM_SELF_HOSTED BIT(1) +#define CORESIGHT_CLAIM_FREE 0 +#define CORESIGHT_CLAIM_EXTERNAL 1 +#define CORESIGHT_CLAIM_SELF_HOSTED 2 +#define CORESIGHT_CLAIM_INVALID 3 #define TIMEOUT_US 100 #define BMVAL(val, lsb, msb) ((val & GENMASK(msb, lsb)) >> lsb) -- cgit v1.2.3 From a1b0e77ce517ec03a50e14abf3cb1da9f6ccd59e Mon Sep 17 00:00:00 2001 From: James Clark Date: Tue, 25 Mar 2025 11:58:49 +0000 Subject: coresight: etm3x: Convert raw base pointer to struct coresight access This is so that etm3x can use the new claim tag functions which take a csa pointer in a later commit. Reviewed-by: Leo Yan Reviewed-by: Yeoreum Yun Signed-off-by: James Clark Signed-off-by: Suzuki K Poulose Link: https://lore.kernel.org/r/20250325-james-coresight-claim-tags-v4-4-dfbd3822b2e5@linaro.org --- drivers/hwtracing/coresight/coresight-etm.h | 6 ++--- drivers/hwtracing/coresight/coresight-etm3x-core.c | 27 +++++++++++----------- .../hwtracing/coresight/coresight-etm3x-sysfs.c | 8 +++---- 3 files changed, 20 insertions(+), 21 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-etm.h b/drivers/hwtracing/coresight/coresight-etm.h index 171f1384f7c0..1d753cca2943 100644 --- a/drivers/hwtracing/coresight/coresight-etm.h +++ b/drivers/hwtracing/coresight/coresight-etm.h @@ -229,7 +229,7 @@ struct etm_config { * @config: structure holding configuration parameters. */ struct etm_drvdata { - void __iomem *base; + struct csdev_access csa; struct clk *atclk; struct coresight_device *csdev; spinlock_t spinlock; @@ -260,7 +260,7 @@ static inline void etm_writel(struct etm_drvdata *drvdata, "invalid CP14 access to ETM reg: %#x", off); } } else { - writel_relaxed(val, drvdata->base + off); + writel_relaxed(val, drvdata->csa.base + off); } } @@ -274,7 +274,7 @@ static inline unsigned int etm_readl(struct etm_drvdata *drvdata, u32 off) "invalid CP14 access to ETM reg: %#x", off); } } else { - val = readl_relaxed(drvdata->base + off); + val = readl_relaxed(drvdata->csa.base + off); } return val; diff --git a/drivers/hwtracing/coresight/coresight-etm3x-core.c b/drivers/hwtracing/coresight/coresight-etm3x-core.c index 8927bfaf3af2..cfd463ac715c 100644 --- a/drivers/hwtracing/coresight/coresight-etm3x-core.c +++ b/drivers/hwtracing/coresight/coresight-etm3x-core.c @@ -86,9 +86,9 @@ static void etm_set_pwrup(struct etm_drvdata *drvdata) { u32 etmpdcr; - etmpdcr = readl_relaxed(drvdata->base + ETMPDCR); + etmpdcr = readl_relaxed(drvdata->csa.base + ETMPDCR); etmpdcr |= ETMPDCR_PWD_UP; - writel_relaxed(etmpdcr, drvdata->base + ETMPDCR); + writel_relaxed(etmpdcr, drvdata->csa.base + ETMPDCR); /* Ensure pwrup completes before subsequent cp14 accesses */ mb(); isb(); @@ -101,9 +101,9 @@ static void etm_clr_pwrup(struct etm_drvdata *drvdata) /* Ensure pending cp14 accesses complete before clearing pwrup */ mb(); isb(); - etmpdcr = readl_relaxed(drvdata->base + ETMPDCR); + etmpdcr = readl_relaxed(drvdata->csa.base + ETMPDCR); etmpdcr &= ~ETMPDCR_PWD_UP; - writel_relaxed(etmpdcr, drvdata->base + ETMPDCR); + writel_relaxed(etmpdcr, drvdata->csa.base + ETMPDCR); } /** @@ -365,7 +365,7 @@ static int etm_enable_hw(struct etm_drvdata *drvdata) struct etm_config *config = &drvdata->config; struct coresight_device *csdev = drvdata->csdev; - CS_UNLOCK(drvdata->base); + CS_UNLOCK(drvdata->csa.base); rc = coresight_claim_device_unlocked(csdev); if (rc) @@ -427,7 +427,7 @@ static int etm_enable_hw(struct etm_drvdata *drvdata) etm_clr_prog(drvdata); done: - CS_LOCK(drvdata->base); + CS_LOCK(drvdata->csa.base); dev_dbg(&drvdata->csdev->dev, "cpu: %d enable smp call done: %d\n", drvdata->cpu, rc); @@ -549,7 +549,7 @@ static void etm_disable_hw(void *info) struct etm_config *config = &drvdata->config; struct coresight_device *csdev = drvdata->csdev; - CS_UNLOCK(drvdata->base); + CS_UNLOCK(drvdata->csa.base); etm_set_prog(drvdata); /* Read back sequencer and counters for post trace analysis */ @@ -561,7 +561,7 @@ static void etm_disable_hw(void *info) etm_set_pwrdwn(drvdata); coresight_disclaim_device_unlocked(csdev); - CS_LOCK(drvdata->base); + CS_LOCK(drvdata->csa.base); dev_dbg(&drvdata->csdev->dev, "cpu: %d disable smp call done\n", drvdata->cpu); @@ -574,7 +574,7 @@ static void etm_disable_perf(struct coresight_device *csdev) if (WARN_ON_ONCE(drvdata->cpu != smp_processor_id())) return; - CS_UNLOCK(drvdata->base); + CS_UNLOCK(drvdata->csa.base); /* Setting the prog bit disables tracing immediately */ etm_set_prog(drvdata); @@ -586,7 +586,7 @@ static void etm_disable_perf(struct coresight_device *csdev) etm_set_pwrdwn(drvdata); coresight_disclaim_device_unlocked(csdev); - CS_LOCK(drvdata->base); + CS_LOCK(drvdata->csa.base); /* * perf will release trace ids when _free_aux() @@ -733,7 +733,7 @@ static void etm_init_arch_data(void *info) /* Make sure all registers are accessible */ etm_os_unlock(drvdata); - CS_UNLOCK(drvdata->base); + CS_UNLOCK(drvdata->csa.base); /* First dummy read */ (void)etm_readl(drvdata, ETMPDSR); @@ -766,7 +766,7 @@ static void etm_init_arch_data(void *info) etm_set_pwrdwn(drvdata); etm_clr_pwrup(drvdata); - CS_LOCK(drvdata->base); + CS_LOCK(drvdata->csa.base); } static int __init etm_hp_setup(void) @@ -827,8 +827,7 @@ static int etm_probe(struct amba_device *adev, const struct amba_id *id) if (IS_ERR(base)) return PTR_ERR(base); - drvdata->base = base; - desc.access = CSDEV_ACCESS_IOMEM(base); + desc.access = drvdata->csa = CSDEV_ACCESS_IOMEM(base); spin_lock_init(&drvdata->spinlock); diff --git a/drivers/hwtracing/coresight/coresight-etm3x-sysfs.c b/drivers/hwtracing/coresight/coresight-etm3x-sysfs.c index b9006451f515..762109307b86 100644 --- a/drivers/hwtracing/coresight/coresight-etm3x-sysfs.c +++ b/drivers/hwtracing/coresight/coresight-etm3x-sysfs.c @@ -50,11 +50,11 @@ static ssize_t etmsr_show(struct device *dev, pm_runtime_get_sync(dev->parent); spin_lock_irqsave(&drvdata->spinlock, flags); - CS_UNLOCK(drvdata->base); + CS_UNLOCK(drvdata->csa.base); val = etm_readl(drvdata, ETMSR); - CS_LOCK(drvdata->base); + CS_LOCK(drvdata->csa.base); spin_unlock_irqrestore(&drvdata->spinlock, flags); pm_runtime_put(dev->parent); @@ -949,9 +949,9 @@ static ssize_t seq_curr_state_show(struct device *dev, pm_runtime_get_sync(dev->parent); spin_lock_irqsave(&drvdata->spinlock, flags); - CS_UNLOCK(drvdata->base); + CS_UNLOCK(drvdata->csa.base); val = (etm_readl(drvdata, ETMSQR) & ETM_SQR_MASK); - CS_LOCK(drvdata->base); + CS_LOCK(drvdata->csa.base); spin_unlock_irqrestore(&drvdata->spinlock, flags); pm_runtime_put(dev->parent); -- cgit v1.2.3 From 7cd6368657f1ee372aac902da911def75afe8477 Mon Sep 17 00:00:00 2001 From: James Clark Date: Tue, 25 Mar 2025 11:58:50 +0000 Subject: coresight: Clear self hosted claim tag on probe This can be left behind from a crashed kernel after a kexec so clear it when probing each device. Clearing the self hosted bit even when claimed externally is harmless, so do it unconditionally. Reviewed-by: Leo Yan Reviewed-by: Yeoreum Yun Signed-off-by: James Clark Signed-off-by: Suzuki K Poulose Link: https://lore.kernel.org/r/20250325-james-coresight-claim-tags-v4-5-dfbd3822b2e5@linaro.org --- drivers/hwtracing/coresight/coresight-catu.c | 1 + drivers/hwtracing/coresight/coresight-cti-core.c | 2 ++ drivers/hwtracing/coresight/coresight-etb10.c | 2 ++ drivers/hwtracing/coresight/coresight-etm3x-core.c | 1 + drivers/hwtracing/coresight/coresight-etm4x-core.c | 2 ++ drivers/hwtracing/coresight/coresight-funnel.c | 1 + drivers/hwtracing/coresight/coresight-replicator.c | 1 + drivers/hwtracing/coresight/coresight-tmc-core.c | 1 + 8 files changed, 11 insertions(+) diff --git a/drivers/hwtracing/coresight/coresight-catu.c b/drivers/hwtracing/coresight/coresight-catu.c index d4e2e175e077..775c5d19af8d 100644 --- a/drivers/hwtracing/coresight/coresight-catu.c +++ b/drivers/hwtracing/coresight/coresight-catu.c @@ -567,6 +567,7 @@ static int __catu_probe(struct device *dev, struct resource *res) catu_desc.subtype.helper_subtype = CORESIGHT_DEV_SUBTYPE_HELPER_CATU; catu_desc.ops = &catu_ops; + coresight_clear_self_claim_tag(&catu_desc.access); drvdata->csdev = coresight_register(&catu_desc); if (IS_ERR(drvdata->csdev)) ret = PTR_ERR(drvdata->csdev); diff --git a/drivers/hwtracing/coresight/coresight-cti-core.c b/drivers/hwtracing/coresight/coresight-cti-core.c index 80f6265e3740..8fb30dd73fd2 100644 --- a/drivers/hwtracing/coresight/coresight-cti-core.c +++ b/drivers/hwtracing/coresight/coresight-cti-core.c @@ -931,6 +931,8 @@ static int cti_probe(struct amba_device *adev, const struct amba_id *id) cti_desc.ops = &cti_ops; cti_desc.groups = drvdata->ctidev.con_groups; cti_desc.dev = dev; + + coresight_clear_self_claim_tag(&cti_desc.access); drvdata->csdev = coresight_register(&cti_desc); if (IS_ERR(drvdata->csdev)) { ret = PTR_ERR(drvdata->csdev); diff --git a/drivers/hwtracing/coresight/coresight-etb10.c b/drivers/hwtracing/coresight/coresight-etb10.c index 7948597d483d..2bfcb669aa84 100644 --- a/drivers/hwtracing/coresight/coresight-etb10.c +++ b/drivers/hwtracing/coresight/coresight-etb10.c @@ -772,6 +772,8 @@ static int etb_probe(struct amba_device *adev, const struct amba_id *id) desc.pdata = pdata; desc.dev = dev; desc.groups = coresight_etb_groups; + + coresight_clear_self_claim_tag(&desc.access); drvdata->csdev = coresight_register(&desc); if (IS_ERR(drvdata->csdev)) return PTR_ERR(drvdata->csdev); diff --git a/drivers/hwtracing/coresight/coresight-etm3x-core.c b/drivers/hwtracing/coresight/coresight-etm3x-core.c index cfd463ac715c..1c6204e14422 100644 --- a/drivers/hwtracing/coresight/coresight-etm3x-core.c +++ b/drivers/hwtracing/coresight/coresight-etm3x-core.c @@ -764,6 +764,7 @@ static void etm_init_arch_data(void *info) drvdata->nr_ext_out = BMVAL(etmccr, 20, 22); drvdata->nr_ctxid_cmp = BMVAL(etmccr, 24, 25); + coresight_clear_self_claim_tag_unlocked(&drvdata->csa); etm_set_pwrdwn(drvdata); etm_clr_pwrup(drvdata); CS_LOCK(drvdata->csa.base); diff --git a/drivers/hwtracing/coresight/coresight-etm4x-core.c b/drivers/hwtracing/coresight/coresight-etm4x-core.c index 2b8f10463840..2d399d2ec44c 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x-core.c +++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c @@ -1372,6 +1372,8 @@ static void etm4_init_arch_data(void *info) drvdata->nrseqstate = FIELD_GET(TRCIDR5_NUMSEQSTATE_MASK, etmidr5); /* NUMCNTR, bits[30:28] number of counters available for tracing */ drvdata->nr_cntr = FIELD_GET(TRCIDR5_NUMCNTR_MASK, etmidr5); + + coresight_clear_self_claim_tag_unlocked(csa); etm4_cs_lock(drvdata, csa); cpu_detect_trace_filtering(drvdata); } diff --git a/drivers/hwtracing/coresight/coresight-funnel.c b/drivers/hwtracing/coresight/coresight-funnel.c index 124fc2e26cfb..b1922dbe9292 100644 --- a/drivers/hwtracing/coresight/coresight-funnel.c +++ b/drivers/hwtracing/coresight/coresight-funnel.c @@ -255,6 +255,7 @@ static int funnel_probe(struct device *dev, struct resource *res) drvdata->base = base; desc.groups = coresight_funnel_groups; desc.access = CSDEV_ACCESS_IOMEM(base); + coresight_clear_self_claim_tag(&desc.access); } dev_set_drvdata(dev, drvdata); diff --git a/drivers/hwtracing/coresight/coresight-replicator.c b/drivers/hwtracing/coresight/coresight-replicator.c index 572dcd2bac16..1edcce1e5279 100644 --- a/drivers/hwtracing/coresight/coresight-replicator.c +++ b/drivers/hwtracing/coresight/coresight-replicator.c @@ -284,6 +284,7 @@ static int replicator_probe(struct device *dev, struct resource *res) desc.pdata = dev->platform_data; desc.dev = dev; + coresight_clear_self_claim_tag(&desc.access); drvdata->csdev = coresight_register(&desc); if (IS_ERR(drvdata->csdev)) { ret = PTR_ERR(drvdata->csdev); diff --git a/drivers/hwtracing/coresight/coresight-tmc-core.c b/drivers/hwtracing/coresight/coresight-tmc-core.c index 455b1c9b1568..bc99f519751e 100644 --- a/drivers/hwtracing/coresight/coresight-tmc-core.c +++ b/drivers/hwtracing/coresight/coresight-tmc-core.c @@ -869,6 +869,7 @@ static int __tmc_probe(struct device *dev, struct resource *res) dev->platform_data = pdata; desc.pdata = pdata; + coresight_clear_self_claim_tag(&desc.access); drvdata->csdev = coresight_register(&desc); if (IS_ERR(drvdata->csdev)) { ret = PTR_ERR(drvdata->csdev); -- cgit v1.2.3 From 48a5126be08514e1d8c9d67a7bf66af36ea6e02d Mon Sep 17 00:00:00 2001 From: James Clark Date: Tue, 25 Mar 2025 11:58:51 +0000 Subject: coresight: Remove inlines from static function definitions These are all static and in one compilation unit so the inline has no effect on the binary. Except if FTRACE is enabled, then some functions which were already not inlined now get the nops added which allows them to be traced. Reviewed-by: Leo Yan Reviewed-by: Yeoreum Yun Signed-off-by: James Clark Signed-off-by: Suzuki K Poulose Link: https://lore.kernel.org/r/20250325-james-coresight-claim-tags-v4-6-dfbd3822b2e5@linaro.org --- drivers/hwtracing/coresight/coresight-catu.c | 11 +++++---- drivers/hwtracing/coresight/coresight-core.c | 14 ++++++------ drivers/hwtracing/coresight/coresight-etb10.c | 2 +- drivers/hwtracing/coresight/coresight-etm4x-core.c | 8 +++---- .../hwtracing/coresight/coresight-etm4x-sysfs.c | 4 ++-- drivers/hwtracing/coresight/coresight-platform.c | 26 +++++++++++----------- drivers/hwtracing/coresight/coresight-replicator.c | 2 +- drivers/hwtracing/coresight/coresight-stm.c | 6 ++--- .../coresight/coresight-syscfg-configfs.c | 2 +- drivers/hwtracing/coresight/coresight-tmc-core.c | 8 +++---- drivers/hwtracing/coresight/coresight-tmc-etr.c | 16 ++++++------- drivers/hwtracing/coresight/coresight-trbe.c | 18 +++++++-------- 12 files changed, 57 insertions(+), 60 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-catu.c b/drivers/hwtracing/coresight/coresight-catu.c index 775c5d19af8d..5058432233da 100644 --- a/drivers/hwtracing/coresight/coresight-catu.c +++ b/drivers/hwtracing/coresight/coresight-catu.c @@ -113,9 +113,8 @@ typedef u64 cate_t; * containing the data page pointer for @offset. If @daddrp is not NULL, * @daddrp points the DMA address of the beginning of the table. */ -static inline cate_t *catu_get_table(struct tmc_sg_table *catu_table, - unsigned long offset, - dma_addr_t *daddrp) +static cate_t *catu_get_table(struct tmc_sg_table *catu_table, unsigned long offset, + dma_addr_t *daddrp) { unsigned long buf_size = tmc_sg_table_buf_size(catu_table); unsigned int table_nr, pg_idx, pg_offset; @@ -165,12 +164,12 @@ static void catu_dump_table(struct tmc_sg_table *catu_table) } #else -static inline void catu_dump_table(struct tmc_sg_table *catu_table) +static void catu_dump_table(struct tmc_sg_table *catu_table) { } #endif -static inline cate_t catu_make_entry(dma_addr_t addr) +static cate_t catu_make_entry(dma_addr_t addr) { return addr ? CATU_VALID_ENTRY(addr) : 0; } @@ -390,7 +389,7 @@ static const struct attribute_group *catu_groups[] = { }; -static inline int catu_wait_for_ready(struct catu_drvdata *drvdata) +static int catu_wait_for_ready(struct catu_drvdata *drvdata) { struct csdev_access *csa = &drvdata->csdev->access; diff --git a/drivers/hwtracing/coresight/coresight-core.c b/drivers/hwtracing/coresight/coresight-core.c index 8f2a40510b09..a68b4299020a 100644 --- a/drivers/hwtracing/coresight/coresight-core.c +++ b/drivers/hwtracing/coresight/coresight-core.c @@ -129,13 +129,13 @@ coresight_find_out_connection(struct coresight_device *csdev, return ERR_PTR(-ENODEV); } -static inline u32 coresight_read_claim_tags_unlocked(struct coresight_device *csdev) +static u32 coresight_read_claim_tags_unlocked(struct coresight_device *csdev) { return FIELD_GET(CORESIGHT_CLAIM_MASK, csdev_access_relaxed_read32(&csdev->access, CORESIGHT_CLAIMCLR)); } -static inline void coresight_set_self_claim_tag_unlocked(struct coresight_device *csdev) +static void coresight_set_self_claim_tag_unlocked(struct coresight_device *csdev) { csdev_access_relaxed_write32(&csdev->access, CORESIGHT_CLAIM_SELF_HOSTED, CORESIGHT_CLAIMSET); @@ -609,7 +609,7 @@ struct coresight_device *coresight_get_sink_by_id(u32 id) * Return true in successful case and power up the device. * Return false when failed to get reference of module. */ -static inline bool coresight_get_ref(struct coresight_device *csdev) +static bool coresight_get_ref(struct coresight_device *csdev) { struct device *dev = csdev->dev.parent; @@ -628,7 +628,7 @@ static inline bool coresight_get_ref(struct coresight_device *csdev) * * @csdev: The coresight device to decrement a reference from. */ -static inline void coresight_put_ref(struct coresight_device *csdev) +static void coresight_put_ref(struct coresight_device *csdev) { struct device *dev = csdev->dev.parent; @@ -851,7 +851,7 @@ void coresight_release_path(struct coresight_path *path) } /* return true if the device is a suitable type for a default sink */ -static inline bool coresight_is_def_sink_type(struct coresight_device *csdev) +static bool coresight_is_def_sink_type(struct coresight_device *csdev) { /* sink & correct subtype */ if (((csdev->type == CORESIGHT_DEV_TYPE_SINK) || @@ -1415,8 +1415,8 @@ EXPORT_SYMBOL_GPL(coresight_unregister); * * Returns the index of the entry, when found. Otherwise, -ENOENT. */ -static inline int coresight_search_device_idx(struct coresight_dev_list *dict, - struct fwnode_handle *fwnode) +static int coresight_search_device_idx(struct coresight_dev_list *dict, + struct fwnode_handle *fwnode) { int i; diff --git a/drivers/hwtracing/coresight/coresight-etb10.c b/drivers/hwtracing/coresight/coresight-etb10.c index 2bfcb669aa84..d5efb085b30d 100644 --- a/drivers/hwtracing/coresight/coresight-etb10.c +++ b/drivers/hwtracing/coresight/coresight-etb10.c @@ -95,7 +95,7 @@ struct etb_drvdata { static int etb_set_buffer(struct coresight_device *csdev, struct perf_output_handle *handle); -static inline unsigned int etb_get_buffer_depth(struct etb_drvdata *drvdata) +static unsigned int etb_get_buffer_depth(struct etb_drvdata *drvdata) { return readl_relaxed(drvdata->base + ETB_RAM_DEPTH_REG); } diff --git a/drivers/hwtracing/coresight/coresight-etm4x-core.c b/drivers/hwtracing/coresight/coresight-etm4x-core.c index 2d399d2ec44c..5c20ed4cf4ed 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x-core.c +++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c @@ -84,7 +84,7 @@ static int etm4_probe_cpu(unsigned int cpu); * TRCIDR4.NUMPC > 0b0000 . * TRCSSCSR.PC == 0b1 */ -static inline bool etm4x_sspcicrn_present(struct etmv4_drvdata *drvdata, int n) +static bool etm4x_sspcicrn_present(struct etmv4_drvdata *drvdata, int n) { return (n < drvdata->nr_ss_cmp) && drvdata->nr_pe && @@ -185,7 +185,7 @@ static void etm_write_os_lock(struct etmv4_drvdata *drvdata, isb(); } -static inline void etm4_os_unlock_csa(struct etmv4_drvdata *drvdata, +static void etm4_os_unlock_csa(struct etmv4_drvdata *drvdata, struct csdev_access *csa) { WARN_ON(drvdata->cpu != smp_processor_id()); @@ -1070,7 +1070,7 @@ static const struct coresight_ops etm4_cs_ops = { .source_ops = &etm4_source_ops, }; -static inline bool cpu_supports_sysreg_trace(void) +static bool cpu_supports_sysreg_trace(void) { u64 dfr0 = read_sysreg_s(SYS_ID_AA64DFR0_EL1); @@ -1378,7 +1378,7 @@ static void etm4_init_arch_data(void *info) cpu_detect_trace_filtering(drvdata); } -static inline u32 etm4_get_victlr_access_type(struct etmv4_config *config) +static u32 etm4_get_victlr_access_type(struct etmv4_config *config) { return etm4_get_access_type(config) << __bf_shf(TRCVICTLR_EXLEVEL_MASK); } diff --git a/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c b/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c index fdd0956fecb3..49d5fb87a74b 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c +++ b/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c @@ -2440,7 +2440,7 @@ static u32 etmv4_cross_read(const struct etmv4_drvdata *drvdata, u32 offset) return reg.data; } -static inline u32 coresight_etm4x_attr_to_offset(struct device_attribute *attr) +static u32 coresight_etm4x_attr_to_offset(struct device_attribute *attr) { struct dev_ext_attribute *eattr; @@ -2464,7 +2464,7 @@ static ssize_t coresight_etm4x_reg_show(struct device *dev, return scnprintf(buf, PAGE_SIZE, "0x%x\n", val); } -static inline bool +static bool etm4x_register_implemented(struct etmv4_drvdata *drvdata, u32 offset) { switch (offset) { diff --git a/drivers/hwtracing/coresight/coresight-platform.c b/drivers/hwtracing/coresight/coresight-platform.c index 8192ba3279f0..0db64c5f4995 100644 --- a/drivers/hwtracing/coresight/coresight-platform.c +++ b/drivers/hwtracing/coresight/coresight-platform.c @@ -139,7 +139,7 @@ coresight_find_csdev_by_fwnode(struct fwnode_handle *r_fwnode) EXPORT_SYMBOL_GPL(coresight_find_csdev_by_fwnode); #ifdef CONFIG_OF -static inline bool of_coresight_legacy_ep_is_input(struct device_node *ep) +static bool of_coresight_legacy_ep_is_input(struct device_node *ep) { return of_property_read_bool(ep, "slave-mode"); } @@ -159,7 +159,7 @@ static struct device_node *of_coresight_get_port_parent(struct device_node *ep) return parent; } -static inline struct device_node * +static struct device_node * of_coresight_get_output_ports_node(const struct device_node *node) { return of_get_child_by_name(node, "out-ports"); @@ -327,14 +327,14 @@ static int of_get_coresight_platform_data(struct device *dev, return 0; } #else -static inline int +static int of_get_coresight_platform_data(struct device *dev, struct coresight_platform_data *pdata) { return -ENOENT; } -static inline int of_coresight_get_cpu(struct device *dev) +static int of_coresight_get_cpu(struct device *dev) { return -ENODEV; } @@ -356,7 +356,7 @@ static const guid_t coresight_graph_uuid = GUID_INIT(0x3ecbc8b6, 0x1d0e, 0x4fb3, #define ACPI_CORESIGHT_LINK_SLAVE 0 #define ACPI_CORESIGHT_LINK_MASTER 1 -static inline bool is_acpi_guid(const union acpi_object *obj) +static bool is_acpi_guid(const union acpi_object *obj) { return (obj->type == ACPI_TYPE_BUFFER) && (obj->buffer.length == 16); } @@ -365,24 +365,24 @@ static inline bool is_acpi_guid(const union acpi_object *obj) * acpi_guid_matches - Checks if the given object is a GUID object and * that it matches the supplied the GUID. */ -static inline bool acpi_guid_matches(const union acpi_object *obj, +static bool acpi_guid_matches(const union acpi_object *obj, const guid_t *guid) { return is_acpi_guid(obj) && guid_equal((guid_t *)obj->buffer.pointer, guid); } -static inline bool is_acpi_dsd_graph_guid(const union acpi_object *obj) +static bool is_acpi_dsd_graph_guid(const union acpi_object *obj) { return acpi_guid_matches(obj, &acpi_graph_uuid); } -static inline bool is_acpi_coresight_graph_guid(const union acpi_object *obj) +static bool is_acpi_coresight_graph_guid(const union acpi_object *obj) { return acpi_guid_matches(obj, &coresight_graph_uuid); } -static inline bool is_acpi_coresight_graph(const union acpi_object *obj) +static bool is_acpi_coresight_graph(const union acpi_object *obj) { const union acpi_object *graphid, *guid, *links; @@ -469,7 +469,7 @@ static inline bool is_acpi_coresight_graph(const union acpi_object *obj) * }, // End of ACPI Graph Property * }) */ -static inline bool acpi_validate_dsd_graph(const union acpi_object *graph) +static bool acpi_validate_dsd_graph(const union acpi_object *graph) { int i, n; const union acpi_object *rev, *nr_graphs; @@ -553,7 +553,7 @@ acpi_get_dsd_graph(struct acpi_device *adev, struct acpi_buffer *buf) return NULL; } -static inline bool +static bool acpi_validate_coresight_graph(const union acpi_object *cs_graph) { int nlinks; @@ -794,14 +794,14 @@ acpi_get_coresight_platform_data(struct device *dev, #else -static inline int +static int acpi_get_coresight_platform_data(struct device *dev, struct coresight_platform_data *pdata) { return -ENOENT; } -static inline int acpi_coresight_get_cpu(struct device *dev) +static int acpi_coresight_get_cpu(struct device *dev) { return -ENODEV; } diff --git a/drivers/hwtracing/coresight/coresight-replicator.c b/drivers/hwtracing/coresight/coresight-replicator.c index 1edcce1e5279..f1d2f764e898 100644 --- a/drivers/hwtracing/coresight/coresight-replicator.c +++ b/drivers/hwtracing/coresight/coresight-replicator.c @@ -63,7 +63,7 @@ static void dynamic_replicator_reset(struct replicator_drvdata *drvdata) /* * replicator_reset : Reset the replicator configuration to sane values. */ -static inline void replicator_reset(struct replicator_drvdata *drvdata) +static void replicator_reset(struct replicator_drvdata *drvdata) { if (drvdata->base) dynamic_replicator_reset(drvdata); diff --git a/drivers/hwtracing/coresight/coresight-stm.c b/drivers/hwtracing/coresight/coresight-stm.c index 527347e4d16c..e45c6c7204b4 100644 --- a/drivers/hwtracing/coresight/coresight-stm.c +++ b/drivers/hwtracing/coresight/coresight-stm.c @@ -301,7 +301,7 @@ static const struct coresight_ops stm_cs_ops = { .source_ops = &stm_source_ops, }; -static inline bool stm_addr_unaligned(const void *addr, u8 write_bytes) +static bool stm_addr_unaligned(const void *addr, u8 write_bytes) { return ((unsigned long)addr & (write_bytes - 1)); } @@ -685,7 +685,7 @@ static int of_stm_get_stimulus_area(struct device *dev, struct resource *res) return of_address_to_resource(np, index, res); } #else -static inline int of_stm_get_stimulus_area(struct device *dev, +static int of_stm_get_stimulus_area(struct device *dev, struct resource *res) { return -ENOENT; @@ -729,7 +729,7 @@ static int acpi_stm_get_stimulus_area(struct device *dev, struct resource *res) return rc; } #else -static inline int acpi_stm_get_stimulus_area(struct device *dev, +static int acpi_stm_get_stimulus_area(struct device *dev, struct resource *res) { return -ENOENT; diff --git a/drivers/hwtracing/coresight/coresight-syscfg-configfs.c b/drivers/hwtracing/coresight/coresight-syscfg-configfs.c index 213b4159b062..2b40e556be87 100644 --- a/drivers/hwtracing/coresight/coresight-syscfg-configfs.c +++ b/drivers/hwtracing/coresight/coresight-syscfg-configfs.c @@ -10,7 +10,7 @@ #include "coresight-syscfg-configfs.h" /* create a default ci_type. */ -static inline struct config_item_type *cscfg_create_ci_type(void) +static struct config_item_type *cscfg_create_ci_type(void) { struct config_item_type *ci_type; diff --git a/drivers/hwtracing/coresight/coresight-tmc-core.c b/drivers/hwtracing/coresight/coresight-tmc-core.c index bc99f519751e..88afb16bb6be 100644 --- a/drivers/hwtracing/coresight/coresight-tmc-core.c +++ b/drivers/hwtracing/coresight/coresight-tmc-core.c @@ -287,8 +287,8 @@ static int tmc_open(struct inode *inode, struct file *file) return 0; } -static inline ssize_t tmc_get_sysfs_trace(struct tmc_drvdata *drvdata, - loff_t pos, size_t len, char **bufpp) +static ssize_t tmc_get_sysfs_trace(struct tmc_drvdata *drvdata, loff_t pos, size_t len, + char **bufpp) { switch (drvdata->config_type) { case TMC_CONFIG_TYPE_ETB: @@ -591,7 +591,7 @@ static const struct attribute_group *coresight_etr_groups[] = { NULL, }; -static inline bool tmc_etr_can_use_sg(struct device *dev) +static bool tmc_etr_can_use_sg(struct device *dev) { int ret; u8 val_u8; @@ -621,7 +621,7 @@ static inline bool tmc_etr_can_use_sg(struct device *dev) return false; } -static inline bool tmc_etr_has_non_secure_access(struct tmc_drvdata *drvdata) +static bool tmc_etr_has_non_secure_access(struct tmc_drvdata *drvdata) { u32 auth = readl_relaxed(drvdata->base + TMC_AUTHSTATUS); diff --git a/drivers/hwtracing/coresight/coresight-tmc-etr.c b/drivers/hwtracing/coresight/coresight-tmc-etr.c index 76a8cb29b68a..3f31ad2ae65d 100644 --- a/drivers/hwtracing/coresight/coresight-tmc-etr.c +++ b/drivers/hwtracing/coresight/coresight-tmc-etr.c @@ -125,7 +125,7 @@ struct etr_sg_table { * If we spill over to a new page for mapping 1 entry, we could as * well replace the link entry of the previous page with the last entry. */ -static inline unsigned long __attribute_const__ +static unsigned long __attribute_const__ tmc_etr_sg_table_entries(int nr_pages) { unsigned long nr_sgpages = nr_pages * ETR_SG_PAGES_PER_SYSPAGE; @@ -239,13 +239,13 @@ err: return -ENOMEM; } -static inline long +static long tmc_sg_get_data_page_offset(struct tmc_sg_table *sg_table, dma_addr_t addr) { return tmc_pages_get_offset(&sg_table->data_pages, addr); } -static inline void tmc_free_table_pages(struct tmc_sg_table *sg_table) +static void tmc_free_table_pages(struct tmc_sg_table *sg_table) { if (sg_table->table_vaddr) vunmap(sg_table->table_vaddr); @@ -481,7 +481,7 @@ static void tmc_etr_sg_table_dump(struct etr_sg_table *etr_table) dev_dbg(sg_table->dev, "******* End of Table *****\n"); } #else -static inline void tmc_etr_sg_table_dump(struct etr_sg_table *etr_table) {} +static void tmc_etr_sg_table_dump(struct etr_sg_table *etr_table) {} #endif /* @@ -886,10 +886,8 @@ void tmc_etr_remove_catu_ops(void) } EXPORT_SYMBOL_GPL(tmc_etr_remove_catu_ops); -static inline int tmc_etr_mode_alloc_buf(int mode, - struct tmc_drvdata *drvdata, - struct etr_buf *etr_buf, int node, - void **pages) +static int tmc_etr_mode_alloc_buf(int mode, struct tmc_drvdata *drvdata, struct etr_buf *etr_buf, + int node, void **pages) { int rc = -EINVAL; @@ -1009,7 +1007,7 @@ static ssize_t tmc_etr_buf_get_data(struct etr_buf *etr_buf, return etr_buf->ops->get_data(etr_buf, (u64)offset, len, bufpp); } -static inline s64 +static s64 tmc_etr_buf_insert_barrier_packet(struct etr_buf *etr_buf, u64 offset) { ssize_t len; diff --git a/drivers/hwtracing/coresight/coresight-trbe.c b/drivers/hwtracing/coresight/coresight-trbe.c index fff67aac8418..8267dd1a2130 100644 --- a/drivers/hwtracing/coresight/coresight-trbe.c +++ b/drivers/hwtracing/coresight/coresight-trbe.c @@ -160,22 +160,22 @@ static void trbe_check_errata(struct trbe_cpudata *cpudata) } } -static inline bool trbe_has_erratum(struct trbe_cpudata *cpudata, int i) +static bool trbe_has_erratum(struct trbe_cpudata *cpudata, int i) { return (i < TRBE_ERRATA_MAX) && test_bit(i, cpudata->errata); } -static inline bool trbe_may_overwrite_in_fill_mode(struct trbe_cpudata *cpudata) +static bool trbe_may_overwrite_in_fill_mode(struct trbe_cpudata *cpudata) { return trbe_has_erratum(cpudata, TRBE_WORKAROUND_OVERWRITE_FILL_MODE); } -static inline bool trbe_may_write_out_of_range(struct trbe_cpudata *cpudata) +static bool trbe_may_write_out_of_range(struct trbe_cpudata *cpudata) { return trbe_has_erratum(cpudata, TRBE_WORKAROUND_WRITE_OUT_OF_RANGE); } -static inline bool trbe_needs_drain_after_disable(struct trbe_cpudata *cpudata) +static bool trbe_needs_drain_after_disable(struct trbe_cpudata *cpudata) { /* * Errata affected TRBE implementation will need TSB CSYNC and @@ -185,7 +185,7 @@ static inline bool trbe_needs_drain_after_disable(struct trbe_cpudata *cpudata) return trbe_has_erratum(cpudata, TRBE_NEEDS_DRAIN_AFTER_DISABLE); } -static inline bool trbe_needs_ctxt_sync_after_enable(struct trbe_cpudata *cpudata) +static bool trbe_needs_ctxt_sync_after_enable(struct trbe_cpudata *cpudata) { /* * Errata affected TRBE implementation will need an additional @@ -196,7 +196,7 @@ static inline bool trbe_needs_ctxt_sync_after_enable(struct trbe_cpudata *cpudat return trbe_has_erratum(cpudata, TRBE_NEEDS_CTXT_SYNC_AFTER_ENABLE); } -static inline bool trbe_is_broken(struct trbe_cpudata *cpudata) +static bool trbe_is_broken(struct trbe_cpudata *cpudata) { return trbe_has_erratum(cpudata, TRBE_IS_BROKEN); } @@ -208,13 +208,13 @@ static int trbe_alloc_node(struct perf_event *event) return cpu_to_node(event->cpu); } -static inline void trbe_drain_buffer(void) +static void trbe_drain_buffer(void) { tsb_csync(); dsb(nsh); } -static inline void set_trbe_enabled(struct trbe_cpudata *cpudata, u64 trblimitr) +static void set_trbe_enabled(struct trbe_cpudata *cpudata, u64 trblimitr) { /* * Enable the TRBE without clearing LIMITPTR which @@ -231,7 +231,7 @@ static inline void set_trbe_enabled(struct trbe_cpudata *cpudata, u64 trblimitr) isb(); } -static inline void set_trbe_disabled(struct trbe_cpudata *cpudata) +static void set_trbe_disabled(struct trbe_cpudata *cpudata) { u64 trblimitr = read_sysreg_s(SYS_TRBLIMITR_EL1); -- cgit v1.2.3 From e6e6b692865d333d79d25c761c53b19e73e9653f Mon Sep 17 00:00:00 2001 From: James Clark Date: Tue, 25 Mar 2025 11:58:52 +0000 Subject: coresight: Remove extern from function declarations Function declarations are extern by default so remove the extra noise and inconsistency. Reviewed-by: Leo Yan Reviewed-by: Yeoreum Yun Signed-off-by: James Clark Signed-off-by: Suzuki K Poulose Link: https://lore.kernel.org/r/20250325-james-coresight-claim-tags-v4-7-dfbd3822b2e5@linaro.org --- drivers/hwtracing/coresight/coresight-priv.h | 14 +++++------ include/linux/coresight.h | 35 ++++++++++++++-------------- 2 files changed, 23 insertions(+), 26 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-priv.h b/drivers/hwtracing/coresight/coresight-priv.h index 6e8cf55aee0a..ce91e0fbb497 100644 --- a/drivers/hwtracing/coresight/coresight-priv.h +++ b/drivers/hwtracing/coresight/coresight-priv.h @@ -60,10 +60,8 @@ struct cs_off_attribute { u32 off; }; -extern ssize_t coresight_simple_show32(struct device *_dev, - struct device_attribute *attr, char *buf); -extern ssize_t coresight_simple_show_pair(struct device *_dev, - struct device_attribute *attr, char *buf); +ssize_t coresight_simple_show32(struct device *_dev, struct device_attribute *attr, char *buf); +ssize_t coresight_simple_show_pair(struct device *_dev, struct device_attribute *attr, char *buf); #define coresight_simple_reg32(name, offset) \ (&((struct cs_off_attribute[]) { \ @@ -160,8 +158,8 @@ void coresight_path_assign_trace_id(struct coresight_path *path, enum cs_mode mode); #if IS_ENABLED(CONFIG_CORESIGHT_SOURCE_ETM3X) -extern int etm_readl_cp14(u32 off, unsigned int *val); -extern int etm_writel_cp14(u32 off, u32 val); +int etm_readl_cp14(u32 off, unsigned int *val); +int etm_writel_cp14(u32 off, u32 val); #else static inline int etm_readl_cp14(u32 off, unsigned int *val) { return 0; } static inline int etm_writel_cp14(u32 off, u32 val) { return 0; } @@ -172,8 +170,8 @@ struct cti_assoc_op { void (*remove)(struct coresight_device *csdev); }; -extern void coresight_set_cti_ops(const struct cti_assoc_op *cti_op); -extern void coresight_remove_cti_ops(void); +void coresight_set_cti_ops(const struct cti_assoc_op *cti_op); +void coresight_remove_cti_ops(void); /* * Macros and inline functions to handle CoreSight UCI data and driver diff --git a/include/linux/coresight.h b/include/linux/coresight.h index b89692d9ceac..8abdd8b5c791 100644 --- a/include/linux/coresight.h +++ b/include/linux/coresight.h @@ -671,28 +671,27 @@ static inline void coresight_set_mode(struct coresight_device *csdev, local_set(&csdev->mode, new_mode); } -extern struct coresight_device * -coresight_register(struct coresight_desc *desc); -extern void coresight_unregister(struct coresight_device *csdev); -extern int coresight_enable_sysfs(struct coresight_device *csdev); -extern void coresight_disable_sysfs(struct coresight_device *csdev); -extern int coresight_timeout(struct csdev_access *csa, u32 offset, - int position, int value); +struct coresight_device *coresight_register(struct coresight_desc *desc); +void coresight_unregister(struct coresight_device *csdev); +int coresight_enable_sysfs(struct coresight_device *csdev); +void coresight_disable_sysfs(struct coresight_device *csdev); +int coresight_timeout(struct csdev_access *csa, u32 offset, int position, int value); typedef void (*coresight_timeout_cb_t) (struct csdev_access *, u32, int, int); -extern int coresight_timeout_action(struct csdev_access *csa, u32 offset, - int position, int value, - coresight_timeout_cb_t cb); +int coresight_timeout_action(struct csdev_access *csa, u32 offset, int position, int value, + coresight_timeout_cb_t cb); +int coresight_claim_device(struct coresight_device *csdev); +int coresight_claim_device_unlocked(struct coresight_device *csdev); -extern int coresight_claim_device(struct coresight_device *csdev); -extern int coresight_claim_device_unlocked(struct coresight_device *csdev); +int coresight_claim_device(struct coresight_device *csdev); +int coresight_claim_device_unlocked(struct coresight_device *csdev); void coresight_clear_self_claim_tag(struct csdev_access *csa); void coresight_clear_self_claim_tag_unlocked(struct csdev_access *csa); -extern void coresight_disclaim_device(struct coresight_device *csdev); -extern void coresight_disclaim_device_unlocked(struct coresight_device *csdev); -extern char *coresight_alloc_device_name(struct coresight_dev_list *devs, +void coresight_disclaim_device(struct coresight_device *csdev); +void coresight_disclaim_device_unlocked(struct coresight_device *csdev); +char *coresight_alloc_device_name(struct coresight_dev_list *devs, struct device *dev); -extern bool coresight_loses_context_with_cpu(struct device *dev); +bool coresight_loses_context_with_cpu(struct device *dev); u32 coresight_relaxed_read32(struct coresight_device *csdev, u32 offset); u32 coresight_read32(struct coresight_device *csdev, u32 offset); @@ -705,8 +704,8 @@ void coresight_relaxed_write64(struct coresight_device *csdev, u64 val, u32 offset); void coresight_write64(struct coresight_device *csdev, u64 val, u32 offset); -extern int coresight_get_cpu(struct device *dev); -extern int coresight_get_static_trace_id(struct device *dev, u32 *id); +int coresight_get_cpu(struct device *dev); +int coresight_get_static_trace_id(struct device *dev, u32 *id); struct coresight_platform_data *coresight_get_platform_data(struct device *dev); struct coresight_connection * -- cgit v1.2.3 From b104a941a94e16c806f2f3b8877e257c3285be65 Mon Sep 17 00:00:00 2001 From: James Clark Date: Wed, 12 Mar 2025 10:31:57 +0000 Subject: coresight: Add a KUnit test for coresight_find_default_sink() Add a test to confirm that default sink selection skips over an ETF and returns an ETR even if it's further away. This also makes it easier to add new unit tests in the future. Reviewed-by: Leo Yan Signed-off-by: James Clark Signed-off-by: Suzuki K Poulose Link: https://lore.kernel.org/r/20250312-james-cs-kunit-test-v4-1-ae3dd718a26a@linaro.org --- drivers/hwtracing/coresight/Kconfig | 9 +++ drivers/hwtracing/coresight/Makefile | 1 + drivers/hwtracing/coresight/coresight-core.c | 1 + .../hwtracing/coresight/coresight-kunit-tests.c | 74 ++++++++++++++++++++++ 4 files changed, 85 insertions(+) create mode 100644 drivers/hwtracing/coresight/coresight-kunit-tests.c diff --git a/drivers/hwtracing/coresight/Kconfig b/drivers/hwtracing/coresight/Kconfig index ecd7086a5b83..f064e3d172b3 100644 --- a/drivers/hwtracing/coresight/Kconfig +++ b/drivers/hwtracing/coresight/Kconfig @@ -259,4 +259,13 @@ config CORESIGHT_DUMMY To compile this driver as a module, choose M here: the module will be called coresight-dummy. + +config CORESIGHT_KUNIT_TESTS + tristate "Enable Coresight unit tests" + depends on KUNIT + default KUNIT_ALL_TESTS + help + Enable Coresight unit tests. Only useful for development and not + intended for production. + endif diff --git a/drivers/hwtracing/coresight/Makefile b/drivers/hwtracing/coresight/Makefile index 8e62c3150aeb..4e6ea5b05b01 100644 --- a/drivers/hwtracing/coresight/Makefile +++ b/drivers/hwtracing/coresight/Makefile @@ -53,3 +53,4 @@ obj-$(CONFIG_ULTRASOC_SMB) += ultrasoc-smb.o obj-$(CONFIG_CORESIGHT_DUMMY) += coresight-dummy.o obj-$(CONFIG_CORESIGHT_CTCU) += coresight-ctcu.o coresight-ctcu-y := coresight-ctcu-core.o +obj-$(CONFIG_CORESIGHT_KUNIT_TESTS) += coresight-kunit-tests.o diff --git a/drivers/hwtracing/coresight/coresight-core.c b/drivers/hwtracing/coresight/coresight-core.c index a68b4299020a..5632bcb8feb6 100644 --- a/drivers/hwtracing/coresight/coresight-core.c +++ b/drivers/hwtracing/coresight/coresight-core.c @@ -989,6 +989,7 @@ coresight_find_default_sink(struct coresight_device *csdev) } return csdev->def_sink; } +EXPORT_SYMBOL_GPL(coresight_find_default_sink); static int coresight_remove_sink_ref(struct device *dev, void *data) { diff --git a/drivers/hwtracing/coresight/coresight-kunit-tests.c b/drivers/hwtracing/coresight/coresight-kunit-tests.c new file mode 100644 index 000000000000..c8f361767c45 --- /dev/null +++ b/drivers/hwtracing/coresight/coresight-kunit-tests.c @@ -0,0 +1,74 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include +#include +#include + +#include "coresight-priv.h" + +static struct coresight_device *coresight_test_device(struct device *dev) +{ + struct coresight_device *csdev = devm_kcalloc(dev, 1, + sizeof(struct coresight_device), + GFP_KERNEL); + csdev->pdata = devm_kcalloc(dev, 1, + sizeof(struct coresight_platform_data), + GFP_KERNEL); + return csdev; +} + +static void test_default_sink(struct kunit *test) +{ + /* + * Source -> ETF -> ETR -> CATU + * ^ + * | default + */ + struct device *dev = kunit_device_register(test, "coresight_kunit"); + struct coresight_device *src = coresight_test_device(dev), + *etf = coresight_test_device(dev), + *etr = coresight_test_device(dev), + *catu = coresight_test_device(dev); + struct coresight_connection conn = {}; + + src->type = CORESIGHT_DEV_TYPE_SOURCE; + /* + * Don't use CORESIGHT_DEV_SUBTYPE_SOURCE_PROC, that would always return + * a TRBE sink if one is registered. + */ + src->subtype.source_subtype = CORESIGHT_DEV_SUBTYPE_SOURCE_BUS; + etf->type = CORESIGHT_DEV_TYPE_LINKSINK; + etf->subtype.sink_subtype = CORESIGHT_DEV_SUBTYPE_SINK_BUFFER; + etr->type = CORESIGHT_DEV_TYPE_SINK; + etr->subtype.sink_subtype = CORESIGHT_DEV_SUBTYPE_SINK_SYSMEM; + catu->type = CORESIGHT_DEV_TYPE_HELPER; + + conn.src_dev = src; + conn.dest_dev = etf; + coresight_add_out_conn(dev, src->pdata, &conn); + + conn.src_dev = etf; + conn.dest_dev = etr; + coresight_add_out_conn(dev, etf->pdata, &conn); + + conn.src_dev = etr; + conn.dest_dev = catu; + coresight_add_out_conn(dev, etr->pdata, &conn); + + KUNIT_ASSERT_PTR_EQ(test, coresight_find_default_sink(src), etr); +} + +static struct kunit_case coresight_testcases[] = { + KUNIT_CASE(test_default_sink), + {} +}; + +static struct kunit_suite coresight_test_suite = { + .name = "coresight_test_suite", + .test_cases = coresight_testcases, +}; + +kunit_test_suites(&coresight_test_suite); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("James Clark "); +MODULE_DESCRIPTION("Arm CoreSight KUnit tests"); -- cgit v1.2.3 From 20acf4dd46e4c0905676ad2a1d9a32041469893f Mon Sep 17 00:00:00 2001 From: Thadeu Lima de Souza Cascardo Date: Wed, 30 Apr 2025 13:36:28 -0300 Subject: char: misc: make miscdevice unit test built-in only Since it uses __init symbols, it cannot be a module. Builds with CONFIG_TEST_MISC_MINOR=m will fail with: ERROR: modpost: "init_mknod" [drivers/misc/misc_minor_kunit.ko] undefined! ERROR: modpost: "init_unlink" [drivers/misc/misc_minor_kunit.ko] undefined! Reported-by: Stephen Rothwell Closes: https://lore.kernel.org/linux-next/20250429155404.2b6fe5b1@canb.auug.org.au/ Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202504160338.BjUL3Owb-lkp@intel.com/ Fixes: 45f0de4f8dc3 ("char: misc: add test cases") Signed-off-by: Thadeu Lima de Souza Cascardo Link: https://lore.kernel.org/r/20250430-misc-test-fixup-v1-1-6f39ed6c733d@igalia.com Signed-off-by: Greg Kroah-Hartman --- lib/Kconfig.debug | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index f9051ab610d5..0117b852bd13 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -2512,7 +2512,7 @@ config TEST_IDA tristate "Perform selftest on IDA functions" config TEST_MISC_MINOR - tristate "miscdevice KUnit test" if !KUNIT_ALL_TESTS + bool "miscdevice KUnit test" if !KUNIT_ALL_TESTS depends on KUNIT default KUNIT_ALL_TESTS help -- cgit v1.2.3 From d4453c58369fff24b8ba187d2375666f69ec1b18 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Thu, 1 May 2025 16:21:09 +0200 Subject: Revert "char: misc: make miscdevice unit test built-in only" This reverts commit 20acf4dd46e4c0905676ad2a1d9a32041469893f. It still does not fix the build issue on all arches, so revert the whole series for now until it can come back in a "clean" form. Link: https://lore.kernel.org/r/20250501164501.0fc0ab68@canb.auug.org.au Reported-by: Stephen Rothwell Cc: Thadeu Lima de Souza Cascardo Signed-off-by: Greg Kroah-Hartman --- lib/Kconfig.debug | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 0117b852bd13..f9051ab610d5 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -2512,7 +2512,7 @@ config TEST_IDA tristate "Perform selftest on IDA functions" config TEST_MISC_MINOR - bool "miscdevice KUnit test" if !KUNIT_ALL_TESTS + tristate "miscdevice KUnit test" if !KUNIT_ALL_TESTS depends on KUNIT default KUNIT_ALL_TESTS help -- cgit v1.2.3 From 96366bf155ab57580e450d659a9edb3163b717d8 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Thu, 1 May 2025 16:22:54 +0200 Subject: Revert "char: misc: add test cases" This reverts commit 45f0de4f8dc385cd8959d884cd89b3b84c76b7f9. It breaks the build on many systems, so revert it for now. Link: https://lore.kernel.org/r/20250501164501.0fc0ab68@canb.auug.org.au Reported-by: Stephen Rothwell Cc: Thadeu Lima de Souza Cascardo Signed-off-by: Greg Kroah-Hartman --- drivers/misc/misc_minor_kunit.c | 589 +--------------------------------------- 1 file changed, 2 insertions(+), 587 deletions(-) diff --git a/drivers/misc/misc_minor_kunit.c b/drivers/misc/misc_minor_kunit.c index 30eceac5f1b6..293e0fb7e43e 100644 --- a/drivers/misc/misc_minor_kunit.c +++ b/drivers/misc/misc_minor_kunit.c @@ -3,9 +3,6 @@ #include #include #include -#include -#include -#include /* dynamic minor (2) */ static struct miscdevice dev_dynamic_minor = { @@ -54,601 +51,19 @@ static void kunit_misc_dynamic_minor(struct kunit *test) misc_deregister(&dev_misc_dynamic_minor); } -struct miscdev_test_case { - const char *str; - int minor; -}; - -static struct miscdev_test_case miscdev_test_ranges[] = { - { - .str = "lower static range, top", - .minor = 15, - }, - { - .str = "upper static range, bottom", - .minor = 130, - }, - { - .str = "lower static range, bottom", - .minor = 0, - }, - { - .str = "upper static range, top", - .minor = MISC_DYNAMIC_MINOR - 1, - }, -}; - -KUNIT_ARRAY_PARAM_DESC(miscdev, miscdev_test_ranges, str); - -static int miscdev_find_minors(struct kunit_suite *suite) -{ - int ret; - struct miscdevice miscstat = { - .name = "miscstat", - }; - int i; - - for (i = 15; i >= 0; i--) { - miscstat.minor = i; - ret = misc_register(&miscstat); - if (ret == 0) - break; - } - - if (ret == 0) { - kunit_info(suite, "found misc device minor %d available\n", - miscstat.minor); - miscdev_test_ranges[0].minor = miscstat.minor; - misc_deregister(&miscstat); - } else { - return ret; - } - - for (i = 128; i < MISC_DYNAMIC_MINOR; i++) { - miscstat.minor = i; - ret = misc_register(&miscstat); - if (ret == 0) - break; - } - - if (ret == 0) { - kunit_info(suite, "found misc device minor %d available\n", - miscstat.minor); - miscdev_test_ranges[1].minor = miscstat.minor; - misc_deregister(&miscstat); - } else { - return ret; - } - - for (i = 0; i < miscdev_test_ranges[0].minor; i++) { - miscstat.minor = i; - ret = misc_register(&miscstat); - if (ret == 0) - break; - } - - if (ret == 0) { - kunit_info(suite, "found misc device minor %d available\n", - miscstat.minor); - miscdev_test_ranges[2].minor = miscstat.minor; - misc_deregister(&miscstat); - } else { - return ret; - } - - for (i = MISC_DYNAMIC_MINOR - 1; i > miscdev_test_ranges[1].minor; i--) { - miscstat.minor = i; - ret = misc_register(&miscstat); - if (ret == 0) - break; - } - - if (ret == 0) { - kunit_info(suite, "found misc device minor %d available\n", - miscstat.minor); - miscdev_test_ranges[3].minor = miscstat.minor; - misc_deregister(&miscstat); - } - - return ret; -} - -static bool is_valid_dynamic_minor(int minor) -{ - if (minor < 0) - return false; - if (minor == MISC_DYNAMIC_MINOR) - return false; - if (minor >= 0 && minor <= 15) - return false; - if (minor >= 128 && minor < MISC_DYNAMIC_MINOR) - return false; - return true; -} - -static int miscdev_test_open(struct inode *inode, struct file *file) -{ - return 0; -} - -static const struct file_operations miscdev_test_fops = { - .open = miscdev_test_open, -}; - -static void __init miscdev_test_can_open(struct kunit *test, struct miscdevice *misc) -{ - int ret; - struct file *filp; - char *devname; - - devname = kasprintf(GFP_KERNEL, "/dev/%s", misc->name); - ret = init_mknod(devname, S_IFCHR | 0600, - new_encode_dev(MKDEV(MISC_MAJOR, misc->minor))); - if (ret != 0) - KUNIT_FAIL(test, "failed to create node\n"); - - filp = filp_open(devname, O_RDONLY, 0); - if (IS_ERR_OR_NULL(filp)) - KUNIT_FAIL(test, "failed to open misc device: %ld\n", PTR_ERR(filp)); - else - fput(filp); - - init_unlink(devname); - kfree(devname); -} - -static void __init miscdev_test_static_basic(struct kunit *test) -{ - struct miscdevice misc_test = { - .name = "misc_test", - .fops = &miscdev_test_fops, - }; - int ret; - const struct miscdev_test_case *params = test->param_value; - - misc_test.minor = params->minor; - - ret = misc_register(&misc_test); - KUNIT_EXPECT_EQ(test, ret, 0); - KUNIT_EXPECT_EQ(test, misc_test.minor, params->minor); - - if (ret == 0) { - miscdev_test_can_open(test, &misc_test); - misc_deregister(&misc_test); - } -} - -static void __init miscdev_test_dynamic_basic(struct kunit *test) -{ - struct miscdevice misc_test = { - .minor = MISC_DYNAMIC_MINOR, - .name = "misc_test", - .fops = &miscdev_test_fops, - }; - int ret; - - ret = misc_register(&misc_test); - KUNIT_EXPECT_EQ(test, ret, 0); - KUNIT_EXPECT_TRUE(test, is_valid_dynamic_minor(misc_test.minor)); - - if (ret == 0) { - miscdev_test_can_open(test, &misc_test); - misc_deregister(&misc_test); - } -} - -static void miscdev_test_twice(struct kunit *test) -{ - struct miscdevice misc_test = { - .name = "misc_test", - .fops = &miscdev_test_fops, - }; - int ret; - const struct miscdev_test_case *params = test->param_value; - - misc_test.minor = params->minor; - - ret = misc_register(&misc_test); - KUNIT_EXPECT_EQ(test, ret, 0); - KUNIT_EXPECT_EQ(test, misc_test.minor, params->minor); - if (ret == 0) - misc_deregister(&misc_test); - - ret = misc_register(&misc_test); - KUNIT_EXPECT_EQ(test, ret, 0); - KUNIT_EXPECT_EQ(test, misc_test.minor, params->minor); - if (ret == 0) - misc_deregister(&misc_test); -} - -static void miscdev_test_duplicate_minor(struct kunit *test) -{ - struct miscdevice misc1 = { - .name = "misc1", - .fops = &miscdev_test_fops, - }; - struct miscdevice misc2 = { - .name = "misc2", - .fops = &miscdev_test_fops, - }; - int ret; - const struct miscdev_test_case *params = test->param_value; - - misc1.minor = params->minor; - misc2.minor = params->minor; - - ret = misc_register(&misc1); - KUNIT_EXPECT_EQ(test, ret, 0); - KUNIT_EXPECT_EQ(test, misc1.minor, params->minor); - - ret = misc_register(&misc2); - KUNIT_EXPECT_EQ(test, ret, -EBUSY); - if (ret == 0) - misc_deregister(&misc2); - - misc_deregister(&misc1); -} - -static void miscdev_test_duplicate_name(struct kunit *test) -{ - struct miscdevice misc1 = { - .minor = MISC_DYNAMIC_MINOR, - .name = "misc1", - .fops = &miscdev_test_fops, - }; - struct miscdevice misc2 = { - .minor = MISC_DYNAMIC_MINOR, - .name = "misc1", - .fops = &miscdev_test_fops, - }; - int ret; - - ret = misc_register(&misc1); - KUNIT_EXPECT_EQ(test, ret, 0); - KUNIT_EXPECT_TRUE(test, is_valid_dynamic_minor(misc1.minor)); - - ret = misc_register(&misc2); - KUNIT_EXPECT_EQ(test, ret, -EEXIST); - if (ret == 0) - misc_deregister(&misc2); - - misc_deregister(&misc1); -} - -/* - * Test that after a duplicate name failure, the reserved minor number is - * freed to be allocated next. - */ -static void miscdev_test_duplicate_name_leak(struct kunit *test) -{ - struct miscdevice misc1 = { - .minor = MISC_DYNAMIC_MINOR, - .name = "misc1", - .fops = &miscdev_test_fops, - }; - struct miscdevice misc2 = { - .minor = MISC_DYNAMIC_MINOR, - .name = "misc1", - .fops = &miscdev_test_fops, - }; - struct miscdevice misc3 = { - .minor = MISC_DYNAMIC_MINOR, - .name = "misc3", - .fops = &miscdev_test_fops, - }; - int ret; - int dyn_minor; - - ret = misc_register(&misc1); - KUNIT_EXPECT_EQ(test, ret, 0); - KUNIT_EXPECT_TRUE(test, is_valid_dynamic_minor(misc1.minor)); - - /* - * Find out what is the next minor number available. - */ - ret = misc_register(&misc3); - KUNIT_EXPECT_EQ(test, ret, 0); - KUNIT_EXPECT_TRUE(test, is_valid_dynamic_minor(misc3.minor)); - dyn_minor = misc3.minor; - misc_deregister(&misc3); - misc3.minor = MISC_DYNAMIC_MINOR; - - ret = misc_register(&misc2); - KUNIT_EXPECT_EQ(test, ret, -EEXIST); - if (ret == 0) - misc_deregister(&misc2); - - /* - * Now check that we can still get the same minor we found before. - */ - ret = misc_register(&misc3); - KUNIT_EXPECT_EQ(test, ret, 0); - KUNIT_EXPECT_TRUE(test, is_valid_dynamic_minor(misc3.minor)); - KUNIT_EXPECT_EQ(test, misc3.minor, dyn_minor); - misc_deregister(&misc3); - - misc_deregister(&misc1); -} - -/* - * Try to register a static minor with a duplicate name. That might not - * deallocate the minor, preventing it from being used again. - */ -static void miscdev_test_duplicate_error(struct kunit *test) -{ - struct miscdevice miscdyn = { - .minor = MISC_DYNAMIC_MINOR, - .name = "name1", - .fops = &miscdev_test_fops, - }; - struct miscdevice miscstat = { - .name = "name1", - .fops = &miscdev_test_fops, - }; - struct miscdevice miscnew = { - .name = "name2", - .fops = &miscdev_test_fops, - }; - int ret; - const struct miscdev_test_case *params = test->param_value; - - miscstat.minor = params->minor; - miscnew.minor = params->minor; - - ret = misc_register(&miscdyn); - KUNIT_EXPECT_EQ(test, ret, 0); - KUNIT_EXPECT_TRUE(test, is_valid_dynamic_minor(miscdyn.minor)); - - ret = misc_register(&miscstat); - KUNIT_EXPECT_EQ(test, ret, -EEXIST); - if (ret == 0) - misc_deregister(&miscstat); - - ret = misc_register(&miscnew); - KUNIT_EXPECT_EQ(test, ret, 0); - KUNIT_EXPECT_EQ(test, miscnew.minor, params->minor); - if (ret == 0) - misc_deregister(&miscnew); - - misc_deregister(&miscdyn); -} - -static void __init miscdev_test_dynamic_only_range(struct kunit *test) -{ - int ret; - struct miscdevice *miscdev; - const int dynamic_minors = 256; - int i; - - miscdev = kunit_kmalloc_array(test, dynamic_minors, - sizeof(struct miscdevice), - GFP_KERNEL | __GFP_ZERO); - - for (i = 0; i < dynamic_minors; i++) { - miscdev[i].minor = MISC_DYNAMIC_MINOR; - miscdev[i].name = kasprintf(GFP_KERNEL, "misc_test%d", i); - miscdev[i].fops = &miscdev_test_fops; - ret = misc_register(&miscdev[i]); - if (ret != 0) - break; - /* - * This is the bug we are looking for! - * We asked for a dynamic minor and got a minor in the static range space. - */ - if (miscdev[i].minor >= 0 && miscdev[i].minor <= 15) { - KUNIT_FAIL(test, "misc_register allocated minor %d\n", miscdev[i].minor); - i++; - break; - } - KUNIT_EXPECT_TRUE(test, is_valid_dynamic_minor(miscdev[i].minor)); - } - - for (i--; i >= 0; i--) { - miscdev_test_can_open(test, &miscdev[i]); - misc_deregister(&miscdev[i]); - kfree_const(miscdev[i].name); - } - - KUNIT_EXPECT_EQ(test, ret, 0); -} - -static void __init miscdev_test_collision(struct kunit *test) -{ - int ret; - struct miscdevice *miscdev; - struct miscdevice miscstat = { - .name = "miscstat", - .fops = &miscdev_test_fops, - }; - const int dynamic_minors = 256; - int i; - - miscdev = kunit_kmalloc_array(test, dynamic_minors, - sizeof(struct miscdevice), - GFP_KERNEL | __GFP_ZERO); - - miscstat.minor = miscdev_test_ranges[0].minor; - ret = misc_register(&miscstat); - KUNIT_ASSERT_EQ(test, ret, 0); - KUNIT_EXPECT_EQ(test, miscstat.minor, miscdev_test_ranges[0].minor); - - for (i = 0; i < dynamic_minors; i++) { - miscdev[i].minor = MISC_DYNAMIC_MINOR; - miscdev[i].name = kasprintf(GFP_KERNEL, "misc_test%d", i); - miscdev[i].fops = &miscdev_test_fops; - ret = misc_register(&miscdev[i]); - if (ret != 0) - break; - KUNIT_EXPECT_TRUE(test, is_valid_dynamic_minor(miscdev[i].minor)); - } - - for (i--; i >= 0; i--) { - miscdev_test_can_open(test, &miscdev[i]); - misc_deregister(&miscdev[i]); - kfree_const(miscdev[i].name); - } - - misc_deregister(&miscstat); - - KUNIT_EXPECT_EQ(test, ret, 0); -} - -static void __init miscdev_test_collision_reverse(struct kunit *test) -{ - int ret; - struct miscdevice *miscdev; - struct miscdevice miscstat = { - .name = "miscstat", - .fops = &miscdev_test_fops, - }; - const int dynamic_minors = 256; - int i; - - miscdev = kunit_kmalloc_array(test, dynamic_minors, - sizeof(struct miscdevice), - GFP_KERNEL | __GFP_ZERO); - - for (i = 0; i < dynamic_minors; i++) { - miscdev[i].minor = MISC_DYNAMIC_MINOR; - miscdev[i].name = kasprintf(GFP_KERNEL, "misc_test%d", i); - miscdev[i].fops = &miscdev_test_fops; - ret = misc_register(&miscdev[i]); - if (ret != 0) - break; - KUNIT_EXPECT_TRUE(test, is_valid_dynamic_minor(miscdev[i].minor)); - } - - KUNIT_EXPECT_EQ(test, ret, 0); - - miscstat.minor = miscdev_test_ranges[0].minor; - ret = misc_register(&miscstat); - KUNIT_EXPECT_EQ(test, ret, 0); - KUNIT_EXPECT_EQ(test, miscstat.minor, miscdev_test_ranges[0].minor); - if (ret == 0) - misc_deregister(&miscstat); - - for (i--; i >= 0; i--) { - miscdev_test_can_open(test, &miscdev[i]); - misc_deregister(&miscdev[i]); - kfree_const(miscdev[i].name); - } -} - -static void __init miscdev_test_conflict(struct kunit *test) -{ - int ret; - struct miscdevice miscdyn = { - .name = "miscdyn", - .minor = MISC_DYNAMIC_MINOR, - .fops = &miscdev_test_fops, - }; - struct miscdevice miscstat = { - .name = "miscstat", - .fops = &miscdev_test_fops, - }; - - ret = misc_register(&miscdyn); - KUNIT_ASSERT_EQ(test, ret, 0); - KUNIT_EXPECT_TRUE(test, is_valid_dynamic_minor(miscdyn.minor)); - - /* - * Try to register a static minor with the same minor as the - * dynamic one. - */ - miscstat.minor = miscdyn.minor; - ret = misc_register(&miscstat); - KUNIT_EXPECT_EQ(test, ret, -EBUSY); - if (ret == 0) - misc_deregister(&miscstat); - - miscdev_test_can_open(test, &miscdyn); - - misc_deregister(&miscdyn); -} - -static void __init miscdev_test_conflict_reverse(struct kunit *test) -{ - int ret; - struct miscdevice miscdyn = { - .name = "miscdyn", - .minor = MISC_DYNAMIC_MINOR, - .fops = &miscdev_test_fops, - }; - struct miscdevice miscstat = { - .name = "miscstat", - .fops = &miscdev_test_fops, - }; - - /* - * Find the first available dynamic minor to use it as a static - * minor later on. - */ - ret = misc_register(&miscdyn); - KUNIT_ASSERT_EQ(test, ret, 0); - KUNIT_EXPECT_TRUE(test, is_valid_dynamic_minor(miscdyn.minor)); - miscstat.minor = miscdyn.minor; - misc_deregister(&miscdyn); - - ret = misc_register(&miscstat); - KUNIT_EXPECT_EQ(test, ret, 0); - KUNIT_EXPECT_EQ(test, miscstat.minor, miscdyn.minor); - - /* - * Try to register a dynamic minor after registering a static minor - * within the dynamic range. It should work but get a different - * minor. - */ - miscdyn.minor = MISC_DYNAMIC_MINOR; - ret = misc_register(&miscdyn); - KUNIT_EXPECT_EQ(test, ret, 0); - KUNIT_EXPECT_NE(test, miscdyn.minor, miscstat.minor); - KUNIT_EXPECT_TRUE(test, is_valid_dynamic_minor(miscdyn.minor)); - if (ret == 0) - misc_deregister(&miscdyn); - - miscdev_test_can_open(test, &miscstat); - - misc_deregister(&miscstat); -} - static struct kunit_case test_cases[] = { KUNIT_CASE(kunit_dynamic_minor), KUNIT_CASE(kunit_static_minor), KUNIT_CASE(kunit_misc_dynamic_minor), - KUNIT_CASE_PARAM(miscdev_test_twice, miscdev_gen_params), - KUNIT_CASE_PARAM(miscdev_test_duplicate_minor, miscdev_gen_params), - KUNIT_CASE(miscdev_test_duplicate_name), - KUNIT_CASE(miscdev_test_duplicate_name_leak), - KUNIT_CASE_PARAM(miscdev_test_duplicate_error, miscdev_gen_params), {} }; static struct kunit_suite test_suite = { - .name = "miscdev", - .suite_init = miscdev_find_minors, + .name = "misc_minor_test", .test_cases = test_cases, }; kunit_test_suite(test_suite); -static struct kunit_case __refdata test_init_cases[] = { - KUNIT_CASE_PARAM(miscdev_test_static_basic, miscdev_gen_params), - KUNIT_CASE(miscdev_test_dynamic_basic), - KUNIT_CASE(miscdev_test_dynamic_only_range), - KUNIT_CASE(miscdev_test_collision), - KUNIT_CASE(miscdev_test_collision_reverse), - KUNIT_CASE(miscdev_test_conflict), - KUNIT_CASE(miscdev_test_conflict_reverse), - {} -}; - -static struct kunit_suite test_init_suite = { - .name = "miscdev_init", - .suite_init = miscdev_find_minors, - .test_cases = test_init_cases, -}; -kunit_test_init_section_suite(test_init_suite); - MODULE_LICENSE("GPL"); MODULE_AUTHOR("Vimal Agrawal"); -MODULE_AUTHOR("Thadeu Lima de Souza Cascardo "); -MODULE_DESCRIPTION("Test module for misc character devices"); +MODULE_DESCRIPTION("misc minor testing"); -- cgit v1.2.3 From 7f4de1867ef9a787c618e6eb1540b34fef2643ae Mon Sep 17 00:00:00 2001 From: "Dr. David Alan Gilbert" Date: Sun, 27 Apr 2025 23:40:22 +0100 Subject: misc: echo: Remove 'echo' is a software echo canceller for telco use, however it's not used in the kernel at all. Remove it. It was moved from staging in 2014 by commit Fixes: 6e2055a9e56e ("staging: echo: move to drivers/misc/") Some discussion on lkml: https://lore.kernel.org/all/Z7tZhYET41DAoHVf@gallifrey/ with Arnd and Harald, led to the 'dahdi' package which is part of Asterisk: https://gitea.osmocom.org/retronetworking/dahdi-linux which can build with the 'echo' module, but is normally configured with out it. Dahdi is large, old, only lightly maintained and with a big API, so there's no hope now of ever merging it into the main kernel tree. Debian do package Dahdi, and in their package they actually include a copy of the 'echo' module rather than using the kernel from the upstream kernel. So even in the few cases where it is packaged and built, the kernel copy isn't used. Signed-off-by: "Dr. David Alan Gilbert" Link: https://lore.kernel.org/r/20250427224022.113678-1-linux@treblig.org Signed-off-by: Greg Kroah-Hartman --- drivers/misc/Kconfig | 1 - drivers/misc/Makefile | 1 - drivers/misc/echo/Kconfig | 9 - drivers/misc/echo/Makefile | 2 - drivers/misc/echo/echo.c | 589 --------------------------------------------- drivers/misc/echo/echo.h | 175 -------------- drivers/misc/echo/fir.h | 154 ------------ drivers/misc/echo/oslec.h | 81 ------- 8 files changed, 1012 deletions(-) delete mode 100644 drivers/misc/echo/Kconfig delete mode 100644 drivers/misc/echo/Makefile delete mode 100644 drivers/misc/echo/echo.c delete mode 100644 drivers/misc/echo/echo.h delete mode 100644 drivers/misc/echo/fir.h delete mode 100644 drivers/misc/echo/oslec.h diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig index 6b37d61150ee..052ab185f876 100644 --- a/drivers/misc/Kconfig +++ b/drivers/misc/Kconfig @@ -640,7 +640,6 @@ source "drivers/misc/altera-stapl/Kconfig" source "drivers/misc/mei/Kconfig" source "drivers/misc/vmw_vmci/Kconfig" source "drivers/misc/genwqe/Kconfig" -source "drivers/misc/echo/Kconfig" source "drivers/misc/ocxl/Kconfig" source "drivers/misc/bcm-vk/Kconfig" source "drivers/misc/cardreader/Kconfig" diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile index d6c917229c45..0b601e6404e1 100644 --- a/drivers/misc/Makefile +++ b/drivers/misc/Makefile @@ -49,7 +49,6 @@ obj-$(CONFIG_LATTICE_ECP3_CONFIG) += lattice-ecp3-config.o obj-$(CONFIG_SRAM) += sram.o obj-$(CONFIG_SRAM_EXEC) += sram-exec.o obj-$(CONFIG_GENWQE) += genwqe/ -obj-$(CONFIG_ECHO) += echo/ obj-$(CONFIG_DW_XDATA_PCIE) += dw-xdata-pcie.o obj-$(CONFIG_PCI_ENDPOINT_TEST) += pci_endpoint_test.o obj-$(CONFIG_OCXL) += ocxl/ diff --git a/drivers/misc/echo/Kconfig b/drivers/misc/echo/Kconfig deleted file mode 100644 index ce0a37a47fc1..000000000000 --- a/drivers/misc/echo/Kconfig +++ /dev/null @@ -1,9 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0-only -config ECHO - tristate "Line Echo Canceller support" - help - This driver provides line echo cancelling support for mISDN and - Zaptel drivers. - - To compile this driver as a module, choose M here. The module - will be called echo. diff --git a/drivers/misc/echo/Makefile b/drivers/misc/echo/Makefile deleted file mode 100644 index 5b97467ffb7d..000000000000 --- a/drivers/misc/echo/Makefile +++ /dev/null @@ -1,2 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0-only -obj-$(CONFIG_ECHO) += echo.o diff --git a/drivers/misc/echo/echo.c b/drivers/misc/echo/echo.c deleted file mode 100644 index 3c4eaba86576..000000000000 --- a/drivers/misc/echo/echo.c +++ /dev/null @@ -1,589 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * SpanDSP - a series of DSP components for telephony - * - * echo.c - A line echo canceller. This code is being developed - * against and partially complies with G168. - * - * Written by Steve Underwood - * and David Rowe - * - * Copyright (C) 2001, 2003 Steve Underwood, 2007 David Rowe - * - * Based on a bit from here, a bit from there, eye of toad, ear of - * bat, 15 years of failed attempts by David and a few fried brain - * cells. - * - * All rights reserved. - */ - -/*! \file */ - -/* Implementation Notes - David Rowe - April 2007 - - This code started life as Steve's NLMS algorithm with a tap - rotation algorithm to handle divergence during double talk. I - added a Geigel Double Talk Detector (DTD) [2] and performed some - G168 tests. However I had trouble meeting the G168 requirements, - especially for double talk - there were always cases where my DTD - failed, for example where near end speech was under the 6dB - threshold required for declaring double talk. - - So I tried a two path algorithm [1], which has so far given better - results. The original tap rotation/Geigel algorithm is available - in SVN http://svn.rowetel.com/software/oslec/tags/before_16bit. - It's probably possible to make it work if some one wants to put some - serious work into it. - - At present no special treatment is provided for tones, which - generally cause NLMS algorithms to diverge. Initial runs of a - subset of the G168 tests for tones (e.g ./echo_test 6) show the - current algorithm is passing OK, which is kind of surprising. The - full set of tests needs to be performed to confirm this result. - - One other interesting change is that I have managed to get the NLMS - code to work with 16 bit coefficients, rather than the original 32 - bit coefficents. This reduces the MIPs and storage required. - I evaulated the 16 bit port using g168_tests.sh and listening tests - on 4 real-world samples. - - I also attempted the implementation of a block based NLMS update - [2] but although this passes g168_tests.sh it didn't converge well - on the real-world samples. I have no idea why, perhaps a scaling - problem. The block based code is also available in SVN - http://svn.rowetel.com/software/oslec/tags/before_16bit. If this - code can be debugged, it will lead to further reduction in MIPS, as - the block update code maps nicely onto DSP instruction sets (it's a - dot product) compared to the current sample-by-sample update. - - Steve also has some nice notes on echo cancellers in echo.h - - References: - - [1] Ochiai, Areseki, and Ogihara, "Echo Canceller with Two Echo - Path Models", IEEE Transactions on communications, COM-25, - No. 6, June - 1977. - https://www.rowetel.com/images/echo/dual_path_paper.pdf - - [2] The classic, very useful paper that tells you how to - actually build a real world echo canceller: - Messerschmitt, Hedberg, Cole, Haoui, Winship, "Digital Voice - Echo Canceller with a TMS320020, - https://www.rowetel.com/images/echo/spra129.pdf - - [3] I have written a series of blog posts on this work, here is - Part 1: http://www.rowetel.com/blog/?p=18 - - [4] The source code http://svn.rowetel.com/software/oslec/ - - [5] A nice reference on LMS filters: - https://en.wikipedia.org/wiki/Least_mean_squares_filter - - Credits: - - Thanks to Steve Underwood, Jean-Marc Valin, and Ramakrishnan - Muthukrishnan for their suggestions and email discussions. Thanks - also to those people who collected echo samples for me such as - Mark, Pawel, and Pavel. -*/ - -#include -#include -#include - -#include "echo.h" - -#define MIN_TX_POWER_FOR_ADAPTION 64 -#define MIN_RX_POWER_FOR_ADAPTION 64 -#define DTD_HANGOVER 600 /* 600 samples, or 75ms */ -#define DC_LOG2BETA 3 /* log2() of DC filter Beta */ - -/* adapting coeffs using the traditional stochastic descent (N)LMS algorithm */ - -static inline void lms_adapt_bg(struct oslec_state *ec, int clean, int shift) -{ - int i; - - int offset1; - int offset2; - int factor; - int exp; - - if (shift > 0) - factor = clean << shift; - else - factor = clean >> -shift; - - /* Update the FIR taps */ - - offset2 = ec->curr_pos; - offset1 = ec->taps - offset2; - - for (i = ec->taps - 1; i >= offset1; i--) { - exp = (ec->fir_state_bg.history[i - offset1] * factor); - ec->fir_taps16[1][i] += (int16_t) ((exp + (1 << 14)) >> 15); - } - for (; i >= 0; i--) { - exp = (ec->fir_state_bg.history[i + offset2] * factor); - ec->fir_taps16[1][i] += (int16_t) ((exp + (1 << 14)) >> 15); - } -} - -static inline int top_bit(unsigned int bits) -{ - if (bits == 0) - return -1; - else - return (int)fls((int32_t) bits) - 1; -} - -struct oslec_state *oslec_create(int len, int adaption_mode) -{ - struct oslec_state *ec; - int i; - const int16_t *history; - - ec = kzalloc(sizeof(*ec), GFP_KERNEL); - if (!ec) - return NULL; - - ec->taps = len; - ec->log2taps = top_bit(len); - ec->curr_pos = ec->taps - 1; - - ec->fir_taps16[0] = - kcalloc(ec->taps, sizeof(int16_t), GFP_KERNEL); - if (!ec->fir_taps16[0]) - goto error_oom_0; - - ec->fir_taps16[1] = - kcalloc(ec->taps, sizeof(int16_t), GFP_KERNEL); - if (!ec->fir_taps16[1]) - goto error_oom_1; - - history = fir16_create(&ec->fir_state, ec->fir_taps16[0], ec->taps); - if (!history) - goto error_state; - history = fir16_create(&ec->fir_state_bg, ec->fir_taps16[1], ec->taps); - if (!history) - goto error_state_bg; - - for (i = 0; i < 5; i++) - ec->xvtx[i] = ec->yvtx[i] = ec->xvrx[i] = ec->yvrx[i] = 0; - - ec->cng_level = 1000; - oslec_adaption_mode(ec, adaption_mode); - - ec->snapshot = kcalloc(ec->taps, sizeof(int16_t), GFP_KERNEL); - if (!ec->snapshot) - goto error_snap; - - ec->cond_met = 0; - ec->pstates = 0; - ec->ltxacc = ec->lrxacc = ec->lcleanacc = ec->lclean_bgacc = 0; - ec->ltx = ec->lrx = ec->lclean = ec->lclean_bg = 0; - ec->tx_1 = ec->tx_2 = ec->rx_1 = ec->rx_2 = 0; - ec->lbgn = ec->lbgn_acc = 0; - ec->lbgn_upper = 200; - ec->lbgn_upper_acc = ec->lbgn_upper << 13; - - return ec; - -error_snap: - fir16_free(&ec->fir_state_bg); -error_state_bg: - fir16_free(&ec->fir_state); -error_state: - kfree(ec->fir_taps16[1]); -error_oom_1: - kfree(ec->fir_taps16[0]); -error_oom_0: - kfree(ec); - return NULL; -} -EXPORT_SYMBOL_GPL(oslec_create); - -void oslec_free(struct oslec_state *ec) -{ - int i; - - fir16_free(&ec->fir_state); - fir16_free(&ec->fir_state_bg); - for (i = 0; i < 2; i++) - kfree(ec->fir_taps16[i]); - kfree(ec->snapshot); - kfree(ec); -} -EXPORT_SYMBOL_GPL(oslec_free); - -void oslec_adaption_mode(struct oslec_state *ec, int adaption_mode) -{ - ec->adaption_mode = adaption_mode; -} -EXPORT_SYMBOL_GPL(oslec_adaption_mode); - -void oslec_flush(struct oslec_state *ec) -{ - int i; - - ec->ltxacc = ec->lrxacc = ec->lcleanacc = ec->lclean_bgacc = 0; - ec->ltx = ec->lrx = ec->lclean = ec->lclean_bg = 0; - ec->tx_1 = ec->tx_2 = ec->rx_1 = ec->rx_2 = 0; - - ec->lbgn = ec->lbgn_acc = 0; - ec->lbgn_upper = 200; - ec->lbgn_upper_acc = ec->lbgn_upper << 13; - - ec->nonupdate_dwell = 0; - - fir16_flush(&ec->fir_state); - fir16_flush(&ec->fir_state_bg); - ec->fir_state.curr_pos = ec->taps - 1; - ec->fir_state_bg.curr_pos = ec->taps - 1; - for (i = 0; i < 2; i++) - memset(ec->fir_taps16[i], 0, ec->taps * sizeof(int16_t)); - - ec->curr_pos = ec->taps - 1; - ec->pstates = 0; -} -EXPORT_SYMBOL_GPL(oslec_flush); - -void oslec_snapshot(struct oslec_state *ec) -{ - memcpy(ec->snapshot, ec->fir_taps16[0], ec->taps * sizeof(int16_t)); -} -EXPORT_SYMBOL_GPL(oslec_snapshot); - -/* Dual Path Echo Canceller */ - -int16_t oslec_update(struct oslec_state *ec, int16_t tx, int16_t rx) -{ - int32_t echo_value; - int clean_bg; - int tmp; - int tmp1; - - /* - * Input scaling was found be required to prevent problems when tx - * starts clipping. Another possible way to handle this would be the - * filter coefficent scaling. - */ - - ec->tx = tx; - ec->rx = rx; - tx >>= 1; - rx >>= 1; - - /* - * Filter DC, 3dB point is 160Hz (I think), note 32 bit precision - * required otherwise values do not track down to 0. Zero at DC, Pole - * at (1-Beta) on real axis. Some chip sets (like Si labs) don't - * need this, but something like a $10 X100P card does. Any DC really - * slows down convergence. - * - * Note: removes some low frequency from the signal, this reduces the - * speech quality when listening to samples through headphones but may - * not be obvious through a telephone handset. - * - * Note that the 3dB frequency in radians is approx Beta, e.g. for Beta - * = 2^(-3) = 0.125, 3dB freq is 0.125 rads = 159Hz. - */ - - if (ec->adaption_mode & ECHO_CAN_USE_RX_HPF) { - tmp = rx << 15; - - /* - * Make sure the gain of the HPF is 1.0. This can still - * saturate a little under impulse conditions, and it might - * roll to 32768 and need clipping on sustained peak level - * signals. However, the scale of such clipping is small, and - * the error due to any saturation should not markedly affect - * the downstream processing. - */ - tmp -= (tmp >> 4); - - ec->rx_1 += -(ec->rx_1 >> DC_LOG2BETA) + tmp - ec->rx_2; - - /* - * hard limit filter to prevent clipping. Note that at this - * stage rx should be limited to +/- 16383 due to right shift - * above - */ - tmp1 = ec->rx_1 >> 15; - if (tmp1 > 16383) - tmp1 = 16383; - if (tmp1 < -16383) - tmp1 = -16383; - rx = tmp1; - ec->rx_2 = tmp; - } - - /* Block average of power in the filter states. Used for - adaption power calculation. */ - - { - int new, old; - - /* efficient "out with the old and in with the new" algorithm so - we don't have to recalculate over the whole block of - samples. */ - new = (int)tx * (int)tx; - old = (int)ec->fir_state.history[ec->fir_state.curr_pos] * - (int)ec->fir_state.history[ec->fir_state.curr_pos]; - ec->pstates += - ((new - old) + (1 << (ec->log2taps - 1))) >> ec->log2taps; - if (ec->pstates < 0) - ec->pstates = 0; - } - - /* Calculate short term average levels using simple single pole IIRs */ - - ec->ltxacc += abs(tx) - ec->ltx; - ec->ltx = (ec->ltxacc + (1 << 4)) >> 5; - ec->lrxacc += abs(rx) - ec->lrx; - ec->lrx = (ec->lrxacc + (1 << 4)) >> 5; - - /* Foreground filter */ - - ec->fir_state.coeffs = ec->fir_taps16[0]; - echo_value = fir16(&ec->fir_state, tx); - ec->clean = rx - echo_value; - ec->lcleanacc += abs(ec->clean) - ec->lclean; - ec->lclean = (ec->lcleanacc + (1 << 4)) >> 5; - - /* Background filter */ - - echo_value = fir16(&ec->fir_state_bg, tx); - clean_bg = rx - echo_value; - ec->lclean_bgacc += abs(clean_bg) - ec->lclean_bg; - ec->lclean_bg = (ec->lclean_bgacc + (1 << 4)) >> 5; - - /* Background Filter adaption */ - - /* Almost always adap bg filter, just simple DT and energy - detection to minimise adaption in cases of strong double talk. - However this is not critical for the dual path algorithm. - */ - ec->factor = 0; - ec->shift = 0; - if (!ec->nonupdate_dwell) { - int p, logp, shift; - - /* Determine: - - f = Beta * clean_bg_rx/P ------ (1) - - where P is the total power in the filter states. - - The Boffins have shown that if we obey (1) we converge - quickly and avoid instability. - - The correct factor f must be in Q30, as this is the fixed - point format required by the lms_adapt_bg() function, - therefore the scaled version of (1) is: - - (2^30) * f = (2^30) * Beta * clean_bg_rx/P - factor = (2^30) * Beta * clean_bg_rx/P ----- (2) - - We have chosen Beta = 0.25 by experiment, so: - - factor = (2^30) * (2^-2) * clean_bg_rx/P - - (30 - 2 - log2(P)) - factor = clean_bg_rx 2 ----- (3) - - To avoid a divide we approximate log2(P) as top_bit(P), - which returns the position of the highest non-zero bit in - P. This approximation introduces an error as large as a - factor of 2, but the algorithm seems to handle it OK. - - Come to think of it a divide may not be a big deal on a - modern DSP, so its probably worth checking out the cycles - for a divide versus a top_bit() implementation. - */ - - p = MIN_TX_POWER_FOR_ADAPTION + ec->pstates; - logp = top_bit(p) + ec->log2taps; - shift = 30 - 2 - logp; - ec->shift = shift; - - lms_adapt_bg(ec, clean_bg, shift); - } - - /* very simple DTD to make sure we dont try and adapt with strong - near end speech */ - - ec->adapt = 0; - if ((ec->lrx > MIN_RX_POWER_FOR_ADAPTION) && (ec->lrx > ec->ltx)) - ec->nonupdate_dwell = DTD_HANGOVER; - if (ec->nonupdate_dwell) - ec->nonupdate_dwell--; - - /* Transfer logic */ - - /* These conditions are from the dual path paper [1], I messed with - them a bit to improve performance. */ - - if ((ec->adaption_mode & ECHO_CAN_USE_ADAPTION) && - (ec->nonupdate_dwell == 0) && - /* (ec->Lclean_bg < 0.875*ec->Lclean) */ - (8 * ec->lclean_bg < 7 * ec->lclean) && - /* (ec->Lclean_bg < 0.125*ec->Ltx) */ - (8 * ec->lclean_bg < ec->ltx)) { - if (ec->cond_met == 6) { - /* - * BG filter has had better results for 6 consecutive - * samples - */ - ec->adapt = 1; - memcpy(ec->fir_taps16[0], ec->fir_taps16[1], - ec->taps * sizeof(int16_t)); - } else - ec->cond_met++; - } else - ec->cond_met = 0; - - /* Non-Linear Processing */ - - ec->clean_nlp = ec->clean; - if (ec->adaption_mode & ECHO_CAN_USE_NLP) { - /* - * Non-linear processor - a fancy way to say "zap small - * signals, to avoid residual echo due to (uLaw/ALaw) - * non-linearity in the channel.". - */ - - if ((16 * ec->lclean < ec->ltx)) { - /* - * Our e/c has improved echo by at least 24 dB (each - * factor of 2 is 6dB, so 2*2*2*2=16 is the same as - * 6+6+6+6=24dB) - */ - if (ec->adaption_mode & ECHO_CAN_USE_CNG) { - ec->cng_level = ec->lbgn; - - /* - * Very elementary comfort noise generation. - * Just random numbers rolled off very vaguely - * Hoth-like. DR: This noise doesn't sound - * quite right to me - I suspect there are some - * overflow issues in the filtering as it's too - * "crackly". - * TODO: debug this, maybe just play noise at - * high level or look at spectrum. - */ - - ec->cng_rndnum = - 1664525U * ec->cng_rndnum + 1013904223U; - ec->cng_filter = - ((ec->cng_rndnum & 0xFFFF) - 32768 + - 5 * ec->cng_filter) >> 3; - ec->clean_nlp = - (ec->cng_filter * ec->cng_level * 8) >> 14; - - } else if (ec->adaption_mode & ECHO_CAN_USE_CLIP) { - /* This sounds much better than CNG */ - if (ec->clean_nlp > ec->lbgn) - ec->clean_nlp = ec->lbgn; - if (ec->clean_nlp < -ec->lbgn) - ec->clean_nlp = -ec->lbgn; - } else { - /* - * just mute the residual, doesn't sound very - * good, used mainly in G168 tests - */ - ec->clean_nlp = 0; - } - } else { - /* - * Background noise estimator. I tried a few - * algorithms here without much luck. This very simple - * one seems to work best, we just average the level - * using a slow (1 sec time const) filter if the - * current level is less than a (experimentally - * derived) constant. This means we dont include high - * level signals like near end speech. When combined - * with CNG or especially CLIP seems to work OK. - */ - if (ec->lclean < 40) { - ec->lbgn_acc += abs(ec->clean) - ec->lbgn; - ec->lbgn = (ec->lbgn_acc + (1 << 11)) >> 12; - } - } - } - - /* Roll around the taps buffer */ - if (ec->curr_pos <= 0) - ec->curr_pos = ec->taps; - ec->curr_pos--; - - if (ec->adaption_mode & ECHO_CAN_DISABLE) - ec->clean_nlp = rx; - - /* Output scaled back up again to match input scaling */ - - return (int16_t) ec->clean_nlp << 1; -} -EXPORT_SYMBOL_GPL(oslec_update); - -/* This function is separated from the echo canceller is it is usually called - as part of the tx process. See rx HP (DC blocking) filter above, it's - the same design. - - Some soft phones send speech signals with a lot of low frequency - energy, e.g. down to 20Hz. This can make the hybrid non-linear - which causes the echo canceller to fall over. This filter can help - by removing any low frequency before it gets to the tx port of the - hybrid. - - It can also help by removing and DC in the tx signal. DC is bad - for LMS algorithms. - - This is one of the classic DC removal filters, adjusted to provide - sufficient bass rolloff to meet the above requirement to protect hybrids - from things that upset them. The difference between successive samples - produces a lousy HPF, and then a suitably placed pole flattens things out. - The final result is a nicely rolled off bass end. The filtering is - implemented with extended fractional precision, which noise shapes things, - giving very clean DC removal. -*/ - -int16_t oslec_hpf_tx(struct oslec_state *ec, int16_t tx) -{ - int tmp; - int tmp1; - - if (ec->adaption_mode & ECHO_CAN_USE_TX_HPF) { - tmp = tx << 15; - - /* - * Make sure the gain of the HPF is 1.0. The first can still - * saturate a little under impulse conditions, and it might - * roll to 32768 and need clipping on sustained peak level - * signals. However, the scale of such clipping is small, and - * the error due to any saturation should not markedly affect - * the downstream processing. - */ - tmp -= (tmp >> 4); - - ec->tx_1 += -(ec->tx_1 >> DC_LOG2BETA) + tmp - ec->tx_2; - tmp1 = ec->tx_1 >> 15; - if (tmp1 > 32767) - tmp1 = 32767; - if (tmp1 < -32767) - tmp1 = -32767; - tx = tmp1; - ec->tx_2 = tmp; - } - - return tx; -} -EXPORT_SYMBOL_GPL(oslec_hpf_tx); - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("David Rowe"); -MODULE_DESCRIPTION("Open Source Line Echo Canceller"); -MODULE_VERSION("0.3.0"); diff --git a/drivers/misc/echo/echo.h b/drivers/misc/echo/echo.h deleted file mode 100644 index 56b4b95fd020..000000000000 --- a/drivers/misc/echo/echo.h +++ /dev/null @@ -1,175 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * SpanDSP - a series of DSP components for telephony - * - * echo.c - A line echo canceller. This code is being developed - * against and partially complies with G168. - * - * Written by Steve Underwood - * and David Rowe - * - * Copyright (C) 2001 Steve Underwood and 2007 David Rowe - * - * All rights reserved. - */ - -#ifndef __ECHO_H -#define __ECHO_H - -/* -Line echo cancellation for voice - -What does it do? - -This module aims to provide G.168-2002 compliant echo cancellation, to remove -electrical echoes (e.g. from 2-4 wire hybrids) from voice calls. - -How does it work? - -The heart of the echo cancellor is FIR filter. This is adapted to match the -echo impulse response of the telephone line. It must be long enough to -adequately cover the duration of that impulse response. The signal transmitted -to the telephone line is passed through the FIR filter. Once the FIR is -properly adapted, the resulting output is an estimate of the echo signal -received from the line. This is subtracted from the received signal. The result -is an estimate of the signal which originated at the far end of the line, free -from echos of our own transmitted signal. - -The least mean squares (LMS) algorithm is attributed to Widrow and Hoff, and -was introduced in 1960. It is the commonest form of filter adaption used in -things like modem line equalisers and line echo cancellers. There it works very -well. However, it only works well for signals of constant amplitude. It works -very poorly for things like speech echo cancellation, where the signal level -varies widely. This is quite easy to fix. If the signal level is normalised - -similar to applying AGC - LMS can work as well for a signal of varying -amplitude as it does for a modem signal. This normalised least mean squares -(NLMS) algorithm is the commonest one used for speech echo cancellation. Many -other algorithms exist - e.g. RLS (essentially the same as Kalman filtering), -FAP, etc. Some perform significantly better than NLMS. However, factors such -as computational complexity and patents favour the use of NLMS. - -A simple refinement to NLMS can improve its performance with speech. NLMS tends -to adapt best to the strongest parts of a signal. If the signal is white noise, -the NLMS algorithm works very well. However, speech has more low frequency than -high frequency content. Pre-whitening (i.e. filtering the signal to flatten its -spectrum) the echo signal improves the adapt rate for speech, and ensures the -final residual signal is not heavily biased towards high frequencies. A very -low complexity filter is adequate for this, so pre-whitening adds little to the -compute requirements of the echo canceller. - -An FIR filter adapted using pre-whitened NLMS performs well, provided certain -conditions are met: - - - The transmitted signal has poor self-correlation. - - There is no signal being generated within the environment being - cancelled. - -The difficulty is that neither of these can be guaranteed. - -If the adaption is performed while transmitting noise (or something fairly -noise like, such as voice) the adaption works very well. If the adaption is -performed while transmitting something highly correlative (typically narrow -band energy such as signalling tones or DTMF), the adaption can go seriously -wrong. The reason is there is only one solution for the adaption on a near -random signal - the impulse response of the line. For a repetitive signal, -there are any number of solutions which converge the adaption, and nothing -guides the adaption to choose the generalised one. Allowing an untrained -canceller to converge on this kind of narrowband energy probably a good thing, -since at least it cancels the tones. Allowing a well converged canceller to -continue converging on such energy is just a way to ruin its generalised -adaption. A narrowband detector is needed, so adapation can be suspended at -appropriate times. - -The adaption process is based on trying to eliminate the received signal. When -there is any signal from within the environment being cancelled it may upset -the adaption process. Similarly, if the signal we are transmitting is small, -noise may dominate and disturb the adaption process. If we can ensure that the -adaption is only performed when we are transmitting a significant signal level, -and the environment is not, things will be OK. Clearly, it is easy to tell when -we are sending a significant signal. Telling, if the environment is generating -a significant signal, and doing it with sufficient speed that the adaption will -not have diverged too much more we stop it, is a little harder. - -The key problem in detecting when the environment is sourcing significant -energy is that we must do this very quickly. Given a reasonably long sample of -the received signal, there are a number of strategies which may be used to -assess whether that signal contains a strong far end component. However, by the -time that assessment is complete the far end signal will have already caused -major mis-convergence in the adaption process. An assessment algorithm is -needed which produces a fairly accurate result from a very short burst of far -end energy. - -How do I use it? - -The echo cancellor processes both the transmit and receive streams sample by -sample. The processing function is not declared inline. Unfortunately, -cancellation requires many operations per sample, so the call overhead is only -a minor burden. -*/ - -#include "fir.h" -#include "oslec.h" - -/* - G.168 echo canceller descriptor. This defines the working state for a line - echo canceller. -*/ -struct oslec_state { - int16_t tx; - int16_t rx; - int16_t clean; - int16_t clean_nlp; - - int nonupdate_dwell; - int curr_pos; - int taps; - int log2taps; - int adaption_mode; - - int cond_met; - int32_t pstates; - int16_t adapt; - int32_t factor; - int16_t shift; - - /* Average levels and averaging filter states */ - int ltxacc; - int lrxacc; - int lcleanacc; - int lclean_bgacc; - int ltx; - int lrx; - int lclean; - int lclean_bg; - int lbgn; - int lbgn_acc; - int lbgn_upper; - int lbgn_upper_acc; - - /* foreground and background filter states */ - struct fir16_state_t fir_state; - struct fir16_state_t fir_state_bg; - int16_t *fir_taps16[2]; - - /* DC blocking filter states */ - int tx_1; - int tx_2; - int rx_1; - int rx_2; - - /* optional High Pass Filter states */ - int32_t xvtx[5]; - int32_t yvtx[5]; - int32_t xvrx[5]; - int32_t yvrx[5]; - - /* Parameters for the optional Hoth noise generator */ - int cng_level; - int cng_rndnum; - int cng_filter; - - /* snapshot sample of coeffs used for development */ - int16_t *snapshot; -}; - -#endif /* __ECHO_H */ diff --git a/drivers/misc/echo/fir.h b/drivers/misc/echo/fir.h deleted file mode 100644 index 4d0821025223..000000000000 --- a/drivers/misc/echo/fir.h +++ /dev/null @@ -1,154 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * SpanDSP - a series of DSP components for telephony - * - * fir.h - General telephony FIR routines - * - * Written by Steve Underwood - * - * Copyright (C) 2002 Steve Underwood - * - * All rights reserved. - */ - -#if !defined(_FIR_H_) -#define _FIR_H_ - -/* - Ideas for improvement: - - 1/ Rewrite filter for dual MAC inner loop. The issue here is handling - history sample offsets that are 16 bit aligned - the dual MAC needs - 32 bit aligmnent. There are some good examples in libbfdsp. - - 2/ Use the hardware circular buffer facility tohalve memory usage. - - 3/ Consider using internal memory. - - Using less memory might also improve speed as cache misses will be - reduced. A drop in MIPs and memory approaching 50% should be - possible. - - The foreground and background filters currenlty use a total of - about 10 MIPs/ch as measured with speedtest.c on a 256 TAP echo - can. -*/ - -/* - * 16 bit integer FIR descriptor. This defines the working state for a single - * instance of an FIR filter using 16 bit integer coefficients. - */ -struct fir16_state_t { - int taps; - int curr_pos; - const int16_t *coeffs; - int16_t *history; -}; - -/* - * 32 bit integer FIR descriptor. This defines the working state for a single - * instance of an FIR filter using 32 bit integer coefficients, and filtering - * 16 bit integer data. - */ -struct fir32_state_t { - int taps; - int curr_pos; - const int32_t *coeffs; - int16_t *history; -}; - -/* - * Floating point FIR descriptor. This defines the working state for a single - * instance of an FIR filter using floating point coefficients and data. - */ -struct fir_float_state_t { - int taps; - int curr_pos; - const float *coeffs; - float *history; -}; - -static inline const int16_t *fir16_create(struct fir16_state_t *fir, - const int16_t *coeffs, int taps) -{ - fir->taps = taps; - fir->curr_pos = taps - 1; - fir->coeffs = coeffs; - fir->history = kcalloc(taps, sizeof(int16_t), GFP_KERNEL); - return fir->history; -} - -static inline void fir16_flush(struct fir16_state_t *fir) -{ - memset(fir->history, 0, fir->taps * sizeof(int16_t)); -} - -static inline void fir16_free(struct fir16_state_t *fir) -{ - kfree(fir->history); -} - -static inline int16_t fir16(struct fir16_state_t *fir, int16_t sample) -{ - int32_t y; - int i; - int offset1; - int offset2; - - fir->history[fir->curr_pos] = sample; - - offset2 = fir->curr_pos; - offset1 = fir->taps - offset2; - y = 0; - for (i = fir->taps - 1; i >= offset1; i--) - y += fir->coeffs[i] * fir->history[i - offset1]; - for (; i >= 0; i--) - y += fir->coeffs[i] * fir->history[i + offset2]; - if (fir->curr_pos <= 0) - fir->curr_pos = fir->taps; - fir->curr_pos--; - return (int16_t) (y >> 15); -} - -static inline const int16_t *fir32_create(struct fir32_state_t *fir, - const int32_t *coeffs, int taps) -{ - fir->taps = taps; - fir->curr_pos = taps - 1; - fir->coeffs = coeffs; - fir->history = kcalloc(taps, sizeof(int16_t), GFP_KERNEL); - return fir->history; -} - -static inline void fir32_flush(struct fir32_state_t *fir) -{ - memset(fir->history, 0, fir->taps * sizeof(int16_t)); -} - -static inline void fir32_free(struct fir32_state_t *fir) -{ - kfree(fir->history); -} - -static inline int16_t fir32(struct fir32_state_t *fir, int16_t sample) -{ - int i; - int32_t y; - int offset1; - int offset2; - - fir->history[fir->curr_pos] = sample; - offset2 = fir->curr_pos; - offset1 = fir->taps - offset2; - y = 0; - for (i = fir->taps - 1; i >= offset1; i--) - y += fir->coeffs[i] * fir->history[i - offset1]; - for (; i >= 0; i--) - y += fir->coeffs[i] * fir->history[i + offset2]; - if (fir->curr_pos <= 0) - fir->curr_pos = fir->taps; - fir->curr_pos--; - return (int16_t) (y >> 15); -} - -#endif diff --git a/drivers/misc/echo/oslec.h b/drivers/misc/echo/oslec.h deleted file mode 100644 index f1adac143b90..000000000000 --- a/drivers/misc/echo/oslec.h +++ /dev/null @@ -1,81 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * OSLEC - A line echo canceller. This code is being developed - * against and partially complies with G168. Using code from SpanDSP - * - * Written by Steve Underwood - * and David Rowe - * - * Copyright (C) 2001 Steve Underwood and 2007-2008 David Rowe - * - * All rights reserved. - */ - -#ifndef __OSLEC_H -#define __OSLEC_H - -/* Mask bits for the adaption mode */ -#define ECHO_CAN_USE_ADAPTION 0x01 -#define ECHO_CAN_USE_NLP 0x02 -#define ECHO_CAN_USE_CNG 0x04 -#define ECHO_CAN_USE_CLIP 0x08 -#define ECHO_CAN_USE_TX_HPF 0x10 -#define ECHO_CAN_USE_RX_HPF 0x20 -#define ECHO_CAN_DISABLE 0x40 - -/** - * oslec_state: G.168 echo canceller descriptor. - * - * This defines the working state for a line echo canceller. - */ -struct oslec_state; - -/** - * oslec_create - Create a voice echo canceller context. - * @len: The length of the canceller, in samples. - * @return: The new canceller context, or NULL if the canceller could not be - * created. - */ -struct oslec_state *oslec_create(int len, int adaption_mode); - -/** - * oslec_free - Free a voice echo canceller context. - * @ec: The echo canceller context. - */ -void oslec_free(struct oslec_state *ec); - -/** - * oslec_flush - Flush (reinitialise) a voice echo canceller context. - * @ec: The echo canceller context. - */ -void oslec_flush(struct oslec_state *ec); - -/** - * oslec_adaption_mode - set the adaption mode of a voice echo canceller context. - * @ec The echo canceller context. - * @adaption_mode: The mode. - */ -void oslec_adaption_mode(struct oslec_state *ec, int adaption_mode); - -void oslec_snapshot(struct oslec_state *ec); - -/** - * oslec_update: Process a sample through a voice echo canceller. - * @ec: The echo canceller context. - * @tx: The transmitted audio sample. - * @rx: The received audio sample. - * - * The return value is the clean (echo cancelled) received sample. - */ -int16_t oslec_update(struct oslec_state *ec, int16_t tx, int16_t rx); - -/** - * oslec_hpf_tx: Process to high pass filter the tx signal. - * @ec: The echo canceller context. - * @tx: The transmitted auio sample. - * - * The return value is the HP filtered transmit sample, send this to your D/A. - */ -int16_t oslec_hpf_tx(struct oslec_state *ec, int16_t tx); - -#endif /* __OSLEC_H */ -- cgit v1.2.3 From 1281f0ae2d0dd278d4812b58fbe26e4c2b8b07c3 Mon Sep 17 00:00:00 2001 From: "Dr. David Alan Gilbert" Date: Mon, 28 Apr 2025 00:30:16 +0100 Subject: MAINTAINERS: Fix XILINX SD-FEC entry The SD-FEC entry claims ownership of the generic drivers/misc/Kconfig and drivers/misc/Makefile in reality that driver is just one of many using those files. Remove those file entries. Fixes: e00feed03f8d ("MAINTAINERS: add maintainer for SD-FEC") Signed-off-by: "Dr. David Alan Gilbert" Link: https://lore.kernel.org/r/20250427233016.124044-1-linux@treblig.org Signed-off-by: Greg Kroah-Hartman --- MAINTAINERS | 2 -- 1 file changed, 2 deletions(-) diff --git a/MAINTAINERS b/MAINTAINERS index 3cbf9ac0d83f..f67fa6969668 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -26567,8 +26567,6 @@ M: Dragan Cvetic S: Maintained F: Documentation/devicetree/bindings/misc/xlnx,sd-fec.yaml F: Documentation/misc-devices/xilinx_sdfec.rst -F: drivers/misc/Kconfig -F: drivers/misc/Makefile F: drivers/misc/xilinx_sdfec.c F: include/uapi/misc/xilinx_sdfec.h -- cgit v1.2.3 From 09f9adbcea38477b37ba63743c7538d2bdcd95a2 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Fri, 25 Apr 2025 23:18:16 -0700 Subject: mei: Cast the cb->ext_hdr allocation type In preparation for making the kmalloc family of allocators type aware, we need to make sure that the returned type from the allocation matches the type of the variable being assigned. (Before, the allocator would always return "void *", which can be implicitly cast to any pointer type.) The assigned type is "struct mei_ext_hdr *", but the returned type will be "struct mei_ext_hdr_gsc_f2h *", which is a larger allocation size. This is by design as struct mei_ext_hdr_gsc_f2h contains struct mei_ext_hdr as its first member. Cast the allocation to the match the assignment. Signed-off-by: Kees Cook Acked-by: Alexander Usyskin Link: https://lore.kernel.org/r/20250426061815.work.435-kees@kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/misc/mei/interrupt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/misc/mei/interrupt.c b/drivers/misc/mei/interrupt.c index b09b79fedaba..c484f416fae4 100644 --- a/drivers/misc/mei/interrupt.c +++ b/drivers/misc/mei/interrupt.c @@ -133,7 +133,7 @@ static int mei_cl_irq_read_msg(struct mei_cl *cl, break; case MEI_EXT_HDR_GSC: gsc_f2h = (struct mei_ext_hdr_gsc_f2h *)ext; - cb->ext_hdr = kzalloc(sizeof(*gsc_f2h), GFP_KERNEL); + cb->ext_hdr = (struct mei_ext_hdr *)kzalloc(sizeof(*gsc_f2h), GFP_KERNEL); if (!cb->ext_hdr) { cb->status = -ENOMEM; goto discard; -- cgit v1.2.3 From 97e72c1e0c5424cd8d7b95c31144e713c44c4244 Mon Sep 17 00:00:00 2001 From: "Dr. David Alan Gilbert" Date: Wed, 30 Apr 2025 01:36:23 +0100 Subject: virt: acrn: Remove unused list 'acrn_irqfd_clients' It doesn't look like this was ever used. Build tested only. Signed-off-by: "Dr. David Alan Gilbert" Acked-by: Fei Li Link: https://lore.kernel.org/r/20250430003623.313541-1-linux@treblig.org Signed-off-by: Greg Kroah-Hartman --- drivers/virt/acrn/irqfd.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/virt/acrn/irqfd.c b/drivers/virt/acrn/irqfd.c index b7da24ca1475..64d32c8fbf79 100644 --- a/drivers/virt/acrn/irqfd.c +++ b/drivers/virt/acrn/irqfd.c @@ -16,8 +16,6 @@ #include "acrn_drv.h" -static LIST_HEAD(acrn_irqfd_clients); - /** * struct hsm_irqfd - Properties of HSM irqfd * @vm: Associated VM pointer -- cgit v1.2.3 From a87564088226dd78fbc11612c06c6380d81e7008 Mon Sep 17 00:00:00 2001 From: Thorsten Blum Date: Sun, 16 Mar 2025 14:58:58 +0100 Subject: mux: mmio: Add missing word in error message s/failed allocate/failed to allocate/ Signed-off-by: Thorsten Blum Link: https://lore.kernel.org/r/20250316135857.1584-2-thorsten.blum@linux.dev Signed-off-by: Krzysztof Kozlowski --- drivers/mux/mmio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mux/mmio.c b/drivers/mux/mmio.c index 30a952c34365..c4e59d2ed42b 100644 --- a/drivers/mux/mmio.c +++ b/drivers/mux/mmio.c @@ -107,7 +107,7 @@ static int mux_mmio_probe(struct platform_device *pdev) fields[i] = devm_regmap_field_alloc(dev, regmap, field); if (IS_ERR(fields[i])) { ret = PTR_ERR(fields[i]); - dev_err(dev, "bitfield %d: failed allocate: %d\n", + dev_err(dev, "bitfield %d: failed to allocate: %d\n", i, ret); return ret; } -- cgit v1.2.3 From 702a09507d808a8cc844ac35a8cf00b4d652dab0 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Thu, 6 Jun 2024 16:24:43 +0200 Subject: mux: adgs1408: simplify with spi_get_device_match_data() Use spi_get_device_match_data() helper to simplify a bit the driver. Link: https://lore.kernel.org/r/20240606142443.130517-1-krzysztof.kozlowski@linaro.org Signed-off-by: Krzysztof Kozlowski --- drivers/mux/adgs1408.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/mux/adgs1408.c b/drivers/mux/adgs1408.c index 22ed051eb1a4..5386cfedcb06 100644 --- a/drivers/mux/adgs1408.c +++ b/drivers/mux/adgs1408.c @@ -59,9 +59,7 @@ static int adgs1408_probe(struct spi_device *spi) s32 idle_state; int ret; - chip_id = (enum adgs1408_chip_id)device_get_match_data(dev); - if (!chip_id) - chip_id = spi_get_device_id(spi)->driver_data; + chip_id = (enum adgs1408_chip_id)spi_get_device_match_data(spi); mux_chip = devm_mux_chip_alloc(dev, 1, 0); if (IS_ERR(mux_chip)) -- cgit v1.2.3 From 7ea3876af994e4fd8065af0314bce6619e73667a Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Wed, 9 Apr 2025 14:22:56 +0200 Subject: mux: adg792a: remove incorrect of_match_ptr annotation Building with W=1 shows a warning about adg792a_of_match being unused when CONFIG_OF is disabled: drivers/mux/adg792a.c:134:34: error: unused variable 'adg792a_of_match' [-Werror,-Wunused-const-variable] Acked-by: Peter Rosin Signed-off-by: Arnd Bergmann Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20250409122314.2848028-4-arnd@kernel.org Signed-off-by: Krzysztof Kozlowski --- drivers/mux/adg792a.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mux/adg792a.c b/drivers/mux/adg792a.c index 4da5aecb9fc6..a5afe29e3cf1 100644 --- a/drivers/mux/adg792a.c +++ b/drivers/mux/adg792a.c @@ -141,7 +141,7 @@ MODULE_DEVICE_TABLE(of, adg792a_of_match); static struct i2c_driver adg792a_driver = { .driver = { .name = "adg792a", - .of_match_table = of_match_ptr(adg792a_of_match), + .of_match_table = adg792a_of_match, }, .probe = adg792a_probe, .id_table = adg792a_id, -- cgit v1.2.3 From 61de83fd8256e185588670d3cf0bccc3e913819c Mon Sep 17 00:00:00 2001 From: Andrew Davis Date: Thu, 23 Jan 2025 12:20:59 -0600 Subject: mux: mmio: Do not use syscon helper to build regmap The syscon helper device_node_to_regmap() is used to fetch a regmap registered to a device node. It also currently creates this regmap if the node did not already have a regmap associated with it. This should only be used on "syscon" nodes. This driver is not such a device and instead uses device_node_to_regmap() on its own node as a hacky way to create a regmap for itself. This will not work going forward and so we should create our regmap the normal way by defining our regmap_config, fetching our memory resource, then using the normal regmap_init_mmio() function. Signed-off-by: Andrew Davis Tested-by: Nishanth Menon Link: https://lore.kernel.org/r/20250123182059.597491-1-afd@ti.com Signed-off-by: Krzysztof Kozlowski --- drivers/mux/mmio.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/drivers/mux/mmio.c b/drivers/mux/mmio.c index c4e59d2ed42b..9993ce38a818 100644 --- a/drivers/mux/mmio.c +++ b/drivers/mux/mmio.c @@ -33,6 +33,12 @@ static const struct of_device_id mux_mmio_dt_ids[] = { }; MODULE_DEVICE_TABLE(of, mux_mmio_dt_ids); +static const struct regmap_config mux_mmio_regmap_cfg = { + .reg_bits = 32, + .val_bits = 32, + .reg_stride = 4, +}; + static int mux_mmio_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -40,6 +46,7 @@ static int mux_mmio_probe(struct platform_device *pdev) struct regmap_field **fields; struct mux_chip *mux_chip; struct regmap *regmap; + void __iomem *base; int num_fields; int ret; int i; @@ -47,7 +54,11 @@ static int mux_mmio_probe(struct platform_device *pdev) if (of_device_is_compatible(np, "mmio-mux")) { regmap = syscon_node_to_regmap(np->parent); } else { - regmap = device_node_to_regmap(np); + base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(base)) + regmap = ERR_PTR(-ENODEV); + else + regmap = regmap_init_mmio(dev, base, &mux_mmio_regmap_cfg); /* Fallback to checking the parent node on "real" errors. */ if (IS_ERR(regmap) && regmap != ERR_PTR(-EPROBE_DEFER)) { regmap = dev_get_regmap(dev->parent, NULL); -- cgit v1.2.3 From 08e2a660b1601963ced37ac8e8d8c134a97f167e Mon Sep 17 00:00:00 2001 From: Alexander Sverdlin Date: Mon, 31 Mar 2025 17:22:20 +0200 Subject: counter: interrupt-cnt: Convert atomic_t -> atomic_long_t Convert the internal counter type to atomic_long_t, which: - doesn't change much for existing in-tree users as they are 32-bit anyway (stm32/i.MX6) - doesn't introduce performace penalty on 32-bit platforms - provides 64-bit resolution on 64-bit platforms with virtually no preformance penalty Signed-off-by: Alexander Sverdlin Acked-by: Oleksij Rempel Link: https://lore.kernel.org/r/20250331152222.2263776-1-alexander.sverdlin@siemens.com Signed-off-by: William Breathitt Gray --- drivers/counter/interrupt-cnt.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/counter/interrupt-cnt.c b/drivers/counter/interrupt-cnt.c index 949598d51575..8df5457b0a07 100644 --- a/drivers/counter/interrupt-cnt.c +++ b/drivers/counter/interrupt-cnt.c @@ -15,7 +15,7 @@ #define INTERRUPT_CNT_NAME "interrupt-cnt" struct interrupt_cnt_priv { - atomic_t count; + atomic_long_t count; struct gpio_desc *gpio; int irq; bool enabled; @@ -29,7 +29,7 @@ static irqreturn_t interrupt_cnt_isr(int irq, void *dev_id) struct counter_device *counter = dev_id; struct interrupt_cnt_priv *priv = counter_priv(counter); - atomic_inc(&priv->count); + atomic_long_inc(&priv->count); counter_push_event(counter, COUNTER_EVENT_CHANGE_OF_STATE, 0); @@ -89,7 +89,7 @@ static int interrupt_cnt_read(struct counter_device *counter, { struct interrupt_cnt_priv *priv = counter_priv(counter); - *val = atomic_read(&priv->count); + *val = atomic_long_read(&priv->count); return 0; } @@ -102,7 +102,7 @@ static int interrupt_cnt_write(struct counter_device *counter, if (val != (typeof(priv->count.counter))val) return -ERANGE; - atomic_set(&priv->count, val); + atomic_long_set(&priv->count, val); return 0; } -- cgit v1.2.3 From 7351312632e831e51383f48957d47712fae791ef Mon Sep 17 00:00:00 2001 From: Alexander Sverdlin Date: Mon, 31 Mar 2025 18:36:40 +0200 Subject: counter: interrupt-cnt: Protect enable/disable OPs with mutex Enable/disable seems to be racy on SMP, consider the following scenario: CPU0 CPU1 interrupt_cnt_enable_write(true) { if (priv->enabled == enable) return 0; if (enable) { priv->enabled = true; interrupt_cnt_enable_write(false) { if (priv->enabled == enable) return 0; if (enable) { priv->enabled = true; enable_irq(priv->irq); } else { disable_irq(priv->irq) priv->enabled = false; } enable_irq(priv->irq); } else { disable_irq(priv->irq); priv->enabled = false; } The above would result in priv->enabled == false, but IRQ left enabled. Protect both write (above race) and read (to propagate the value on SMP) callbacks with a mutex. Signed-off-by: Alexander Sverdlin Fixes: a55ebd47f21f ("counter: add IRQ or GPIO based counter") Acked-by: Oleksij Rempel Link: https://lore.kernel.org/r/20250331163642.2382651-1-alexander.sverdlin@siemens.com Signed-off-by: William Breathitt Gray --- drivers/counter/interrupt-cnt.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/counter/interrupt-cnt.c b/drivers/counter/interrupt-cnt.c index 949598d51575..d83848d0fe2a 100644 --- a/drivers/counter/interrupt-cnt.c +++ b/drivers/counter/interrupt-cnt.c @@ -3,12 +3,14 @@ * Copyright (c) 2021 Pengutronix, Oleksij Rempel */ +#include #include #include #include #include #include #include +#include #include #include @@ -19,6 +21,7 @@ struct interrupt_cnt_priv { struct gpio_desc *gpio; int irq; bool enabled; + struct mutex lock; struct counter_signal signals; struct counter_synapse synapses; struct counter_count cnts; @@ -41,6 +44,8 @@ static int interrupt_cnt_enable_read(struct counter_device *counter, { struct interrupt_cnt_priv *priv = counter_priv(counter); + guard(mutex)(&priv->lock); + *enable = priv->enabled; return 0; @@ -51,6 +56,8 @@ static int interrupt_cnt_enable_write(struct counter_device *counter, { struct interrupt_cnt_priv *priv = counter_priv(counter); + guard(mutex)(&priv->lock); + if (priv->enabled == enable) return 0; @@ -227,6 +234,8 @@ static int interrupt_cnt_probe(struct platform_device *pdev) if (ret) return ret; + mutex_init(&priv->lock); + ret = devm_counter_add(dev, counter); if (ret < 0) return dev_err_probe(dev, ret, "Failed to add counter\n"); -- cgit v1.2.3 From c553aa1b03719400a30d9387477190d4743fc1de Mon Sep 17 00:00:00 2001 From: David Lechner Date: Tue, 22 Apr 2025 15:12:27 -0500 Subject: iio: adc: ad7173: fix compiling without gpiolib Fix compiling the ad7173 driver when CONFIG_GPIOLIB is not set by selecting GPIOLIB to be always enabled and remove the #if. Commit 031bdc8aee01 ("iio: adc: ad7173: add calibration support") placed unrelated code in the middle of the #if IS_ENABLED(CONFIG_GPIOLIB) block which caused the reported compile error. However, later commit 7530ed2aaa3f ("iio: adc: ad7173: add openwire detection support for single conversions") makes use of the gpio regmap even when we aren't providing gpio controller support. So it makes more sense to always enable GPIOLIB rather than trying to make it optional. Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202504220824.HVrTVov1-lkp@intel.com/ Fixes: 031bdc8aee01 ("iio: adc: ad7173: add calibration support") Signed-off-by: David Lechner Link: https://patch.msgid.link/20250422-iio-adc-ad7173-fix-compile-without-gpiolib-v1-1-295f2c990754@baylibre.com Cc: Signed-off-by: Jonathan Cameron --- drivers/iio/adc/Kconfig | 5 +++-- drivers/iio/adc/ad7173.c | 15 +-------------- 2 files changed, 4 insertions(+), 16 deletions(-) diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig index 6529df1a498c..ba746754a816 100644 --- a/drivers/iio/adc/Kconfig +++ b/drivers/iio/adc/Kconfig @@ -129,8 +129,9 @@ config AD7173 tristate "Analog Devices AD7173 driver" depends on SPI_MASTER select AD_SIGMA_DELTA - select GPIO_REGMAP if GPIOLIB - select REGMAP_SPI if GPIOLIB + select GPIOLIB + select GPIO_REGMAP + select REGMAP_SPI help Say yes here to build support for Analog Devices AD7173 and similar ADC Currently supported models: diff --git a/drivers/iio/adc/ad7173.c b/drivers/iio/adc/ad7173.c index 69de5886474c..b3e6bd2a55d7 100644 --- a/drivers/iio/adc/ad7173.c +++ b/drivers/iio/adc/ad7173.c @@ -230,10 +230,8 @@ struct ad7173_state { unsigned long long *config_cnts; struct clk *ext_clk; struct clk_hw int_clk_hw; -#if IS_ENABLED(CONFIG_GPIOLIB) struct regmap *reg_gpiocon_regmap; struct gpio_regmap *gpio_regmap; -#endif }; static unsigned int ad4115_sinc5_data_rates[] = { @@ -288,8 +286,6 @@ static const char *const ad7173_clk_sel[] = { "ext-clk", "xtal" }; -#if IS_ENABLED(CONFIG_GPIOLIB) - static const struct regmap_range ad7173_range_gpio[] = { regmap_reg_range(AD7173_REG_GPIO, AD7173_REG_GPIO), }; @@ -543,12 +539,6 @@ static int ad7173_gpio_init(struct ad7173_state *st) return 0; } -#else -static int ad7173_gpio_init(struct ad7173_state *st) -{ - return 0; -} -#endif /* CONFIG_GPIOLIB */ static struct ad7173_state *ad_sigma_delta_to_ad7173(struct ad_sigma_delta *sd) { @@ -1797,10 +1787,7 @@ static int ad7173_probe(struct spi_device *spi) if (ret) return ret; - if (IS_ENABLED(CONFIG_GPIOLIB)) - return ad7173_gpio_init(st); - - return 0; + return ad7173_gpio_init(st); } static const struct of_device_id ad7173_of_match[] = { -- cgit v1.2.3 From 3f5fd1717ae9497215f22aa748fc2c09df88b0e3 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Fri, 2 May 2025 10:04:30 -0500 Subject: iio: adc: ad7606: fix raw read for 18-bit chips Fix 18-bit raw read for 18-bit chips by applying a mask to the value we receive from the SPI controller. SPI controllers either return 1, 2 or 4 bytes per word depending on the bits_per_word. For 16-bit chips, there was no problem since they raw data fit exactly in the 2 bytes received from the SPI controller. But now that we have 18-bit chips and we are using bits_per_word = 18, we cannot assume that the extra bits in the 32-bit word are always zero. In fact, with the AXI SPI Engine controller, these bits are not always zero which caused the raw values to read 10s of 1000s of volts instead of the correct value. Therefore, we need to mask the value we receive from the SPI controller to ensure that only the 18 bits of real data are used. Fixes: f3838e934dff ("iio: adc: ad7606: add support for AD7606C-{16,18} parts") Signed-off-by: David Lechner Link: https://patch.msgid.link/20250502-iio-adc-ad7606-fix-raw-read-for-18-bit-chips-v1-1-06caa92d8f11@baylibre.com Cc: Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7606.c | 21 ++++++++++----------- 1 file changed, 10 insertions(+), 11 deletions(-) diff --git a/drivers/iio/adc/ad7606.c b/drivers/iio/adc/ad7606.c index 703556eb7257..8ed65a35b486 100644 --- a/drivers/iio/adc/ad7606.c +++ b/drivers/iio/adc/ad7606.c @@ -727,17 +727,16 @@ static int ad7606_scan_direct(struct iio_dev *indio_dev, unsigned int ch, goto error_ret; chan = &indio_dev->channels[ch + 1]; - if (chan->scan_type.sign == 'u') { - if (realbits > 16) - *val = st->data.buf32[ch]; - else - *val = st->data.buf16[ch]; - } else { - if (realbits > 16) - *val = sign_extend32(st->data.buf32[ch], realbits - 1); - else - *val = sign_extend32(st->data.buf16[ch], realbits - 1); - } + + if (realbits > 16) + *val = st->data.buf32[ch]; + else + *val = st->data.buf16[ch]; + + *val &= GENMASK(realbits - 1, 0); + + if (chan->scan_type.sign == 's') + *val = sign_extend32(*val, realbits - 1); error_ret: if (!st->gpio_convst) { -- cgit v1.2.3 From 89944d88f8795c6c89b9514cb365998145511cd4 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Mon, 28 Apr 2025 20:55:34 -0500 Subject: iio: adc: ad7606_spi: fix reg write value mask Fix incorrect value mask for register write. Register values are 8-bit, not 9. If this function was called with a value > 0xFF and an even addr, it would cause writing to the next register. Fixes: f2a22e1e172f ("iio: adc: ad7606: Add support for software mode for ad7616") Signed-off-by: David Lechner Reviewed-by: Angelo Dureghello Link: https://patch.msgid.link/20250428-iio-adc-ad7606_spi-fix-write-value-mask-v1-1-a2d5e85a809f@baylibre.com Cc: Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7606_spi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/adc/ad7606_spi.c b/drivers/iio/adc/ad7606_spi.c index 179115e90988..b37458ce3c70 100644 --- a/drivers/iio/adc/ad7606_spi.c +++ b/drivers/iio/adc/ad7606_spi.c @@ -155,7 +155,7 @@ static int ad7606_spi_reg_write(struct ad7606_state *st, struct spi_device *spi = to_spi_device(st->dev); st->d16[0] = cpu_to_be16((st->bops->rd_wr_cmd(addr, 1) << 8) | - (val & 0x1FF)); + (val & 0xFF)); return spi_write(spi, &st->d16[0], sizeof(st->d16[0])); } -- cgit v1.2.3 From 6ebf1982038af12f3588417e4fd0417d2551da28 Mon Sep 17 00:00:00 2001 From: Qasim Ijaz Date: Tue, 22 Apr 2025 16:37:37 +0100 Subject: fpga: fix potential null pointer deref in fpga_mgr_test_img_load_sgt() fpga_mgr_test_img_load_sgt() allocates memory for sgt using kunit_kzalloc() however it does not check if the allocation failed. It then passes sgt to sg_alloc_table(), which passes it to __sg_alloc_table(). This function calls memset() on sgt in an attempt to zero it out. If the allocation fails then sgt will be NULL and the memset will trigger a NULL pointer dereference. Fix this by checking the allocation with KUNIT_ASSERT_NOT_ERR_OR_NULL(). Reviewed-by: Marco Pagani Fixes: ccbc1c302115 ("fpga: add an initial KUnit suite for the FPGA Manager") Signed-off-by: Qasim Ijaz Acked-by: Xu Yilun Link: https://lore.kernel.org/r/20250422153737.5264-1-qasdev00@gmail.com Signed-off-by: Xu Yilun --- drivers/fpga/tests/fpga-mgr-test.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/fpga/tests/fpga-mgr-test.c b/drivers/fpga/tests/fpga-mgr-test.c index 9cb37aefbac4..1902ebf5a298 100644 --- a/drivers/fpga/tests/fpga-mgr-test.c +++ b/drivers/fpga/tests/fpga-mgr-test.c @@ -263,6 +263,7 @@ static void fpga_mgr_test_img_load_sgt(struct kunit *test) img_buf = init_test_buffer(test, IMAGE_SIZE); sgt = kunit_kzalloc(test, sizeof(*sgt), GFP_KERNEL); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, sgt); ret = sg_alloc_table(sgt, 1, GFP_KERNEL); KUNIT_ASSERT_EQ(test, ret, 0); sg_init_one(sgt->sgl, img_buf, IMAGE_SIZE); -- cgit v1.2.3 From 196d05a39caeb9c2bdf48ec3589af087f9217b0e Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Tue, 22 Apr 2025 19:37:47 -0700 Subject: EISA: Move devlist.h out of obj to always I put devlist.h into the wrong Makefile macro ("obj") to get it included in "targets". Put it into "always" so nothing tries to link against it. Solves CONFIG_EISA=y i386 build failure: ld: vmlinux.a: member drivers/eisa/devlist.h in archive is not an object Reported-by: Randy Dunlap Closes: https://lore.kernel.org/all/4a8ba1d0-d2d9-41f8-abf1-d45ec8996d10@infradead.org Fixes: dd09eb0e2cc4 ("EISA: Increase length of device names") Signed-off-by: Kees Cook Acked-by: Randy Dunlap Tested-by: Randy Dunlap Link: https://lore.kernel.org/r/20250423023743.work.350-kees@kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/eisa/Makefile | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/eisa/Makefile b/drivers/eisa/Makefile index f0d6cf7d1f32..552bd9478340 100644 --- a/drivers/eisa/Makefile +++ b/drivers/eisa/Makefile @@ -1,7 +1,8 @@ # SPDX-License-Identifier: GPL-2.0 # Makefile for the Linux device tree -obj-$(CONFIG_EISA) += devlist.h eisa-bus.o +always-$(CONFIG_EISA) += devlist.h +obj-$(CONFIG_EISA) += eisa-bus.o obj-${CONFIG_EISA_PCI_EISA} += pci_eisa.o # virtual_root.o should be the last EISA root device to initialize, -- cgit v1.2.3 From deeeaf6a522160fb262edd76e70240330e4ff8a6 Mon Sep 17 00:00:00 2001 From: Leo Yan Date: Fri, 2 May 2025 12:11:08 +0100 Subject: coresight: replicator: Fix panic for clearing claim tag On platforms with a static replicator, a kernel panic occurs during boot: [ 4.999406] replicator_probe+0x1f8/0x360 [ 5.003455] replicator_platform_probe+0x64/0xd8 [ 5.008115] platform_probe+0x70/0xf0 [ 5.011812] really_probe+0xc4/0x2a8 [ 5.015417] __driver_probe_device+0x80/0x140 [ 5.019813] driver_probe_device+0xe4/0x170 [ 5.024032] __driver_attach+0x9c/0x1b0 [ 5.027900] bus_for_each_dev+0x7c/0xe8 [ 5.031769] driver_attach+0x2c/0x40 [ 5.035373] bus_add_driver+0xec/0x218 [ 5.039154] driver_register+0x68/0x138 [ 5.043023] __platform_driver_register+0x2c/0x40 [ 5.047771] coresight_init_driver+0x4c/0xe0 [ 5.052079] replicator_init+0x30/0x48 [ 5.055865] do_one_initcall+0x4c/0x280 [ 5.059736] kernel_init_freeable+0x1ec/0x3c8 [ 5.064134] kernel_init+0x28/0x1f0 [ 5.067655] ret_from_fork+0x10/0x20 A static replicator doesn't have registers, so accessing the claim register results in a NULL pointer deference. Fixes the issue by accessing the claim registers only after the I/O resource has been successfully mapped. Fixes: 7cd6368657f1 ("coresight: Clear self hosted claim tag on probe") Signed-off-by: Leo Yan Reviewed-by: James Clark Signed-off-by: Suzuki K Poulose Link: https://lore.kernel.org/r/20250502111108.2726217-1-leo.yan@arm.com --- drivers/hwtracing/coresight/coresight-replicator.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/hwtracing/coresight/coresight-replicator.c b/drivers/hwtracing/coresight/coresight-replicator.c index f1d2f764e898..06efd2b01a0f 100644 --- a/drivers/hwtracing/coresight/coresight-replicator.c +++ b/drivers/hwtracing/coresight/coresight-replicator.c @@ -262,6 +262,7 @@ static int replicator_probe(struct device *dev, struct resource *res) drvdata->base = base; desc.groups = replicator_groups; desc.access = CSDEV_ACCESS_IOMEM(base); + coresight_clear_self_claim_tag(&desc.access); } if (fwnode_property_present(dev_fwnode(dev), @@ -284,7 +285,6 @@ static int replicator_probe(struct device *dev, struct resource *res) desc.pdata = dev->platform_data; desc.dev = dev; - coresight_clear_self_claim_tag(&desc.access); drvdata->csdev = coresight_register(&desc); if (IS_ERR(drvdata->csdev)) { ret = PTR_ERR(drvdata->csdev); -- cgit v1.2.3 From 798f589092770f5c584f4a6829fc10e595856239 Mon Sep 17 00:00:00 2001 From: Mao Jinlong Date: Tue, 6 May 2025 00:57:43 -0700 Subject: coresight: Disable MMIO logging for coresight stm driver With MMIO logging enabled, the MMIO access are traced and could be sent to an STM device. Thus, an STM driver MMIO access could create circular call chain with MMIO logging. Disable it for STM driver. [] stm_source_write[stm_core]+0xc4 [] stm_ftrace_write[stm_ftrace]+0x40 [] trace_event_buffer_commit+0x238 [] trace_event_raw_event_rwmmio_rw_template+0x8c [] log_post_write_mmio+0xb4 [] writel_relaxed[coresight_stm]+0x80 [] stm_generic_packet[coresight_stm]+0x1a8 [] stm_data_write[stm_core]+0x78 [] stm_source_write[stm_core]+0x7c [] stm_ftrace_write[stm_ftrace]+0x40 [] trace_event_buffer_commit+0x238 [] trace_event_raw_event_rwmmio_read+0x84 [] log_read_mmio+0xac [] readl_relaxed[coresight_tmc]+0x50 Signed-off-by: Mao Jinlong Reviewed-by: Leo Yan Reviewed-by: Anshuman Khandual Signed-off-by: Suzuki K Poulose Link: https://lore.kernel.org/r/20250506075743.1398257-1-quic_jinlmao@quicinc.com --- drivers/hwtracing/coresight/Makefile | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/hwtracing/coresight/Makefile b/drivers/hwtracing/coresight/Makefile index 4e6ea5b05b01..4e7cc3c5bf99 100644 --- a/drivers/hwtracing/coresight/Makefile +++ b/drivers/hwtracing/coresight/Makefile @@ -22,6 +22,8 @@ condflags := \ $(call cc-option, -Wstringop-truncation) subdir-ccflags-y += $(condflags) +CFLAGS_coresight-stm.o := -D__DISABLE_TRACE_MMIO__ + obj-$(CONFIG_CORESIGHT) += coresight.o coresight-y := coresight-core.o coresight-etm-perf.o coresight-platform.o \ coresight-sysfs.o coresight-syscfg.o coresight-config.o \ -- cgit v1.2.3 From 921fece3268c3bf2e8c20dd17ff9e5454fa16fda Mon Sep 17 00:00:00 2001 From: Angelo Dureghello Date: Wed, 9 Apr 2025 11:16:54 +0200 Subject: iio: dac: adi-axi-dac: fix bus read MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fix bus read function. Testing the driver, on a random basis, wrong reads was detected, mainly by a wrong DAC chip ID read at first boot. Before reading the expected value from the AXI regmap, need always to wait for busy flag to be cleared. Fixes: e61d7178429a ("iio: dac: adi-axi-dac: extend features") Signed-off-by: Angelo Dureghello Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250409-ad3552r-fix-bus-read-v2-1-34d3b21e8ca0@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/dac/adi-axi-dac.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/iio/dac/adi-axi-dac.c b/drivers/iio/dac/adi-axi-dac.c index 892d770aec69..05b374e137d3 100644 --- a/drivers/iio/dac/adi-axi-dac.c +++ b/drivers/iio/dac/adi-axi-dac.c @@ -707,6 +707,7 @@ static int axi_dac_bus_reg_read(struct iio_backend *back, u32 reg, u32 *val, { struct axi_dac_state *st = iio_backend_get_priv(back); int ret; + u32 ival; guard(mutex)(&st->lock); @@ -719,6 +720,13 @@ static int axi_dac_bus_reg_read(struct iio_backend *back, u32 reg, u32 *val, if (ret) return ret; + ret = regmap_read_poll_timeout(st->regmap, + AXI_DAC_UI_STATUS_REG, ival, + FIELD_GET(AXI_DAC_UI_STATUS_IF_BUSY, ival) == 0, + 10, 100 * KILO); + if (ret) + return ret; + return regmap_read(st->regmap, AXI_DAC_CUSTOM_RD_REG, val); } -- cgit v1.2.3 From e2f820014239df9360064079ae93f838ff3b7f8c Mon Sep 17 00:00:00 2001 From: Sean Nyekjaer Date: Fri, 2 May 2025 11:37:26 +0200 Subject: iio: imu: inv_icm42600: Fix temperature calculation >From the documentation: "offset to be added to [Y]_raw prior toscaling by [Y]_scale" Offset should be applied before multiplying scale, so divide offset by scale to make this correct. Fixes: bc3eb0207fb5 ("iio: imu: inv_icm42600: add temperature sensor support") Signed-off-by: Sean Nyekjaer Acked-by: Jean-Baptiste Maneyrol Link: https://patch.msgid.link/20250502-imu-v1-1-129b8391a4e3@geanix.com Cc: Signed-off-by: Jonathan Cameron --- drivers/iio/imu/inv_icm42600/inv_icm42600_temp.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_temp.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_temp.c index 213cce1c3111..91f0f381082b 100644 --- a/drivers/iio/imu/inv_icm42600/inv_icm42600_temp.c +++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_temp.c @@ -67,16 +67,18 @@ int inv_icm42600_temp_read_raw(struct iio_dev *indio_dev, return IIO_VAL_INT; /* * T°C = (temp / 132.48) + 25 - * Tm°C = 1000 * ((temp * 100 / 13248) + 25) + * Tm°C = 1000 * ((temp / 132.48) + 25) + * Tm°C = 7.548309 * temp + 25000 + * Tm°C = (temp + 3312) * 7.548309 * scale: 100000 / 13248 ~= 7.548309 - * offset: 25000 + * offset: 3312 */ case IIO_CHAN_INFO_SCALE: *val = 7; *val2 = 548309; return IIO_VAL_INT_PLUS_MICRO; case IIO_CHAN_INFO_OFFSET: - *val = 25000; + *val = 3312; return IIO_VAL_INT; default: return -EINVAL; -- cgit v1.2.3 From e9c695067b68da6b39e0d70cd4a061d0f70050d3 Mon Sep 17 00:00:00 2001 From: Srinivas Kandagatla Date: Thu, 27 Mar 2025 10:06:28 +0000 Subject: dt-bindings: mux: add optional regulator binding to gpio mux On some platforms to minimise pop and click during switching between CTIA and OMTP headset an additional HiFi Mux Switch is used. Most common case is that this switch is switched on by default, but on some platforms this needs a regulator enable. One such platform is Lenovo T14s. Adds required bindings in gpio-mux to add such optional regulator. Signed-off-by: Srinivas Kandagatla Reviewed-by: Krzysztof Kozlowski Acked-by: Rob Herring (Arm) Link: https://lore.kernel.org/r/20250327100633.11530-2-srinivas.kandagatla@linaro.org Signed-off-by: Krzysztof Kozlowski --- Documentation/devicetree/bindings/mux/gpio-mux.yaml | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Documentation/devicetree/bindings/mux/gpio-mux.yaml b/Documentation/devicetree/bindings/mux/gpio-mux.yaml index b597c1f2c577..ef7e33ec85d4 100644 --- a/Documentation/devicetree/bindings/mux/gpio-mux.yaml +++ b/Documentation/devicetree/bindings/mux/gpio-mux.yaml @@ -25,6 +25,10 @@ properties: description: List of gpios used to control the multiplexer, least significant bit first. + mux-supply: + description: + Regulator to power on the multiplexer. + '#mux-control-cells': enum: [ 0, 1 ] -- cgit v1.2.3 From 12d3c69ba2734b5908e0ac8ac2dcbd0cc28fef3a Mon Sep 17 00:00:00 2001 From: Srinivas Kandagatla Date: Thu, 27 Mar 2025 10:06:29 +0000 Subject: mux: gpio: add optional regulator support Some of the external muxes needs powering up using a regulator. This is the case with Lenovo T14s laptop which has a external audio mux to handle US/EURO headsets. Add support to the driver to handle this optional regulator. Signed-off-by: Srinivas Kandagatla Tested-by: Christopher Obbard Reviewed-by: Johan Hovold Tested-by: Johan Hovold Link: https://lore.kernel.org/r/20250327100633.11530-3-srinivas.kandagatla@linaro.org [krzk: Adjust dev_err message per Johan's review] Signed-off-by: Krzysztof Kozlowski --- drivers/mux/gpio.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/mux/gpio.c b/drivers/mux/gpio.c index 5710879cd47f..4cc3202c58f3 100644 --- a/drivers/mux/gpio.c +++ b/drivers/mux/gpio.c @@ -15,6 +15,7 @@ #include #include #include +#include struct mux_gpio { struct gpio_descs *gpios; @@ -80,6 +81,10 @@ static int mux_gpio_probe(struct platform_device *pdev) mux_chip->mux->idle_state = idle_state; } + ret = devm_regulator_get_enable_optional(dev, "mux"); + if (ret && ret != -ENODEV) + return dev_err_probe(dev, ret, "failed to get/enable mux supply\n"); + ret = devm_mux_chip_register(dev, mux_chip); if (ret < 0) return ret; -- cgit v1.2.3 From aad548a95393cd08ad029fb2393a88d1b9ec1c48 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Mon, 31 Mar 2025 10:14:53 +0300 Subject: coresight: cti: Replace inclusion by struct fwnode_handle forward declaration The fwnode.h is not supposed to be used by the drivers as it has the definitions for the core parts for different device property provider implementations. Drop it. Since the code wants to use the pointer to the struct fwnode_handle the forward declaration is provided. Signed-off-by: Andy Shevchenko Reviewed-by: James Clark Signed-off-by: Suzuki K Poulose Link: https://lore.kernel.org/r/20250331071453.3987013-1-andriy.shevchenko@linux.intel.com --- drivers/hwtracing/coresight/coresight-cti.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/hwtracing/coresight/coresight-cti.h b/drivers/hwtracing/coresight/coresight-cti.h index 16e310e7e9d4..8362a47c939c 100644 --- a/drivers/hwtracing/coresight/coresight-cti.h +++ b/drivers/hwtracing/coresight/coresight-cti.h @@ -9,7 +9,6 @@ #include #include -#include #include #include #include @@ -17,6 +16,8 @@ #include "coresight-priv.h" +struct fwnode_handle; + /* * Device registers * 0x000 - 0x144: CTI programming and status -- cgit v1.2.3 From 9761037d28327e0d4ee9586a8210ef6462c2c757 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Thu, 1 May 2025 20:18:20 +0200 Subject: mux: adgs1408: fix Wvoid-pointer-to-enum-cast warning MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 'chip_id' is an enum, thus cast of pointer on 64-bit compile test with W=1 causes: adgs1408.c:63:12: error: cast to smaller integer type 'enum adgs1408_chip_id' from 'const void *' [-Werror,-Wvoid-pointer-to-enum-cast] Reviewed-by: Nuno Sá Link: https://lore.kernel.org/r/20250501181819.164207-2-krzysztof.kozlowski@linaro.org Signed-off-by: Krzysztof Kozlowski --- drivers/mux/adgs1408.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mux/adgs1408.c b/drivers/mux/adgs1408.c index 5386cfedcb06..5eaf07d09ac9 100644 --- a/drivers/mux/adgs1408.c +++ b/drivers/mux/adgs1408.c @@ -59,7 +59,7 @@ static int adgs1408_probe(struct spi_device *spi) s32 idle_state; int ret; - chip_id = (enum adgs1408_chip_id)spi_get_device_match_data(spi); + chip_id = (kernel_ulong_t)spi_get_device_match_data(spi); mux_chip = devm_mux_chip_alloc(dev, 1, 0); if (IS_ERR(mux_chip)) -- cgit v1.2.3 From 73ed6faed58e5611abfb54c2f703eec091781d63 Mon Sep 17 00:00:00 2001 From: Heikki Huttu Date: Thu, 8 May 2025 19:44:30 +0300 Subject: comedi: drivers: adl_pci9118.c: Edit file so that checkpatch.pl has 0 typo errors Fix errors produced by checkpath.pl about typos. Signed-off-by: Heikki Huttu Reviewed-by: Ian Abbott Link: https://lore.kernel.org/r/aBzfbvF6YdaYDDYk@Lappari.v6.elisa-laajakaista.fi Signed-off-by: Greg Kroah-Hartman --- drivers/comedi/drivers/adl_pci9118.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/comedi/drivers/adl_pci9118.c b/drivers/comedi/drivers/adl_pci9118.c index a76e2666d583..67c663892e48 100644 --- a/drivers/comedi/drivers/adl_pci9118.c +++ b/drivers/comedi/drivers/adl_pci9118.c @@ -32,7 +32,7 @@ * ranges). * * There are some hardware limitations: - * a) You cann't use mixture of unipolar/bipoar ranges or differencial/single + * a) You can't use mixture of unipolar/bipolar ranges or differential/single * ended inputs. * b) DMA transfers must have the length aligned to two samples (32 bit), * so there is some problems if cmd->chanlist_len is odd. This driver tries @@ -227,7 +227,7 @@ struct pci9118_private { struct pci9118_dmabuf dmabuf[2]; int softsshdelay; /* * >0 use software S&H, - * numer is requested delay in ns + * number is requested delay in ns */ unsigned char softsshsample; /* * polarity of S&H signal -- cgit v1.2.3 From 499a8cee812588905cc940837e69918c1649a19e Mon Sep 17 00:00:00 2001 From: Antoniu Miclaus Date: Fri, 9 May 2025 13:16:57 +0300 Subject: iio: adc: ad4851: fix ad4858 chan pointer handling MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The pointer returned from ad4851_parse_channels_common() is incremented internally as each channel is populated. In ad4858_parse_channels(), the same pointer was further incremented while setting ext_scan_type fields for each channel. This resulted in indio_dev->channels being set to a pointer past the end of the allocated array, potentially causing memory corruption or undefined behavior. Fix this by iterating over the channels using an explicit index instead of incrementing the pointer. This preserves the original base pointer and ensures all channel metadata is set correctly. Fixes: 6250803fe2ec ("iio: adc: ad4851: add ad485x driver") Signed-off-by: Antoniu Miclaus Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250509101657.6742-1-antoniu.miclaus@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad4851.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/iio/adc/ad4851.c b/drivers/iio/adc/ad4851.c index 98ebc853db79..f1d2e2896f2a 100644 --- a/drivers/iio/adc/ad4851.c +++ b/drivers/iio/adc/ad4851.c @@ -1034,7 +1034,7 @@ static int ad4858_parse_channels(struct iio_dev *indio_dev) struct device *dev = &st->spi->dev; struct iio_chan_spec *ad4851_channels; const struct iio_chan_spec ad4851_chan = AD4858_IIO_CHANNEL; - int ret; + int ret, i = 0; ret = ad4851_parse_channels_common(indio_dev, &ad4851_channels, ad4851_chan); @@ -1042,15 +1042,15 @@ static int ad4858_parse_channels(struct iio_dev *indio_dev) return ret; device_for_each_child_node_scoped(dev, child) { - ad4851_channels->has_ext_scan_type = 1; + ad4851_channels[i].has_ext_scan_type = 1; if (fwnode_property_read_bool(child, "bipolar")) { - ad4851_channels->ext_scan_type = ad4851_scan_type_20_b; - ad4851_channels->num_ext_scan_type = ARRAY_SIZE(ad4851_scan_type_20_b); + ad4851_channels[i].ext_scan_type = ad4851_scan_type_20_b; + ad4851_channels[i].num_ext_scan_type = ARRAY_SIZE(ad4851_scan_type_20_b); } else { - ad4851_channels->ext_scan_type = ad4851_scan_type_20_u; - ad4851_channels->num_ext_scan_type = ARRAY_SIZE(ad4851_scan_type_20_u); + ad4851_channels[i].ext_scan_type = ad4851_scan_type_20_u; + ad4851_channels[i].num_ext_scan_type = ARRAY_SIZE(ad4851_scan_type_20_u); } - ad4851_channels++; + i++; } indio_dev->channels = ad4851_channels; -- cgit v1.2.3 From 4d92e7c5ccadc79764674ffc2c88d329aabbb7e0 Mon Sep 17 00:00:00 2001 From: Jeffrey Hugo Date: Fri, 28 Mar 2025 10:35:26 -0600 Subject: bus: mhi: host: Fix conflict between power_up and SYSERR When mhi_async_power_up() enables IRQs, it is possible that we could receive a SYSERR notification from the device if the firmware has crashed for some reason. Then the SYSERR notification queues a work item that cannot execute until the pm_mutex is released by mhi_async_power_up(). So the SYSERR work item will be pending. If mhi_async_power_up() detects the SYSERR, it will handle it. If the device is in PBL, then the PBL state transition event will be queued, resulting in a work item after the pending SYSERR work item. Once mhi_async_power_up() releases the pm_mutex, the SYSERR work item can run. It will blindly attempt to reset the MHI state machine, which is the recovery action for SYSERR. PBL/SBL are not interrupt driven and will ignore the MHI Reset unless SYSERR is actively advertised. This will cause the SYSERR work item to timeout waiting for reset to be cleared, and will leave the host state in SYSERR processing. The PBL transition work item will then run, and immediately fail because SYSERR processing is not a valid state for PBL transition. This leaves the device uninitialized. This issue has a fairly unique signature in the kernel log: mhi mhi3: Requested to power ON Qualcomm Cloud AI 100 0000:36:00.0: Fatal error received from device. Attempting to recover mhi mhi3: Power on setup success mhi mhi3: Device failed to exit MHI Reset state mhi mhi3: Device MHI is not in valid state We cannot remove the SYSERR handling from mhi_async_power_up() because the device may be in the SYSERR state, but we missed the notification as the irq was fired before irqs were enabled. We also can't queue the SYSERR work item from mhi_async_power_up() if SYSERR is detected because that may result in a duplicate work item, and cause the same issue since the duplicate item will blindly issue MHI reset even if SYSERR is no longer active. Instead, add a check in the SYSERR work item to make sure that MHI reset is only issued if the device is in SYSERR state for PBL or SBL EEs. Fixes: a6e2e3522f29 ("bus: mhi: core: Add support for PM state transitions") Signed-off-by: Jeffrey Hugo Signed-off-by: Jeff Hugo Signed-off-by: Manivannan Sadhasivam Reviewed-by: Troy Hanson Reviewed-by: Manivannan Sadhasivam cc: stable@vger.kernel.org Link: https://patch.msgid.link/20250328163526.3365497-1-jeff.hugo@oss.qualcomm.com --- drivers/bus/mhi/host/pm.c | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) diff --git a/drivers/bus/mhi/host/pm.c b/drivers/bus/mhi/host/pm.c index 2fb27e6f8f88..33d92bf2fc3e 100644 --- a/drivers/bus/mhi/host/pm.c +++ b/drivers/bus/mhi/host/pm.c @@ -602,6 +602,7 @@ static void mhi_pm_sys_error_transition(struct mhi_controller *mhi_cntrl) struct mhi_cmd *mhi_cmd; struct mhi_event_ctxt *er_ctxt; struct device *dev = &mhi_cntrl->mhi_dev->dev; + bool reset_device = false; int ret, i; dev_dbg(dev, "Transitioning from PM state: %s to: %s\n", @@ -630,8 +631,23 @@ static void mhi_pm_sys_error_transition(struct mhi_controller *mhi_cntrl) /* Wake up threads waiting for state transition */ wake_up_all(&mhi_cntrl->state_event); - /* Trigger MHI RESET so that the device will not access host memory */ if (MHI_REG_ACCESS_VALID(prev_state)) { + /* + * If the device is in PBL or SBL, it will only respond to + * RESET if the device is in SYSERR state. SYSERR might + * already be cleared at this point. + */ + enum mhi_state cur_state = mhi_get_mhi_state(mhi_cntrl); + enum mhi_ee_type cur_ee = mhi_get_exec_env(mhi_cntrl); + + if (cur_state == MHI_STATE_SYS_ERR) + reset_device = true; + else if (cur_ee != MHI_EE_PBL && cur_ee != MHI_EE_SBL) + reset_device = true; + } + + /* Trigger MHI RESET so that the device will not access host memory */ + if (reset_device) { u32 in_reset = -1; unsigned long timeout = msecs_to_jiffies(mhi_cntrl->timeout_ms); -- cgit v1.2.3 From ce7cc522e9ffbad8663cb0b69eba928107b5909c Mon Sep 17 00:00:00 2001 From: Subramanian Ananthanarayanan Date: Wed, 16 Apr 2025 10:49:51 +0530 Subject: bus: mhi: host: pci_generic: Remove redundant assign resource usage Avoid redundant usage of pci_assign_resource for BAR allocation. This is already taken care by PCI framework. Invocation of this API leads to unnecessary relocation of BAR space to a new memory address. Signed-off-by: Subramanian Ananthanarayanan Signed-off-by: Manivannan Sadhasivam Reviewed-by: Krishna Chaitanya Chundru Link: https://patch.msgid.link/20250416-remove_assin_resource-v1-1-e92dd361fa0a@quicinc.com --- drivers/bus/mhi/host/pci_generic.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/bus/mhi/host/pci_generic.c b/drivers/bus/mhi/host/pci_generic.c index 03aa88795209..7501abc835c7 100644 --- a/drivers/bus/mhi/host/pci_generic.c +++ b/drivers/bus/mhi/host/pci_generic.c @@ -996,10 +996,6 @@ static int mhi_pci_claim(struct mhi_controller *mhi_cntrl, struct pci_dev *pdev = to_pci_dev(mhi_cntrl->cntrl_dev); int err; - err = pci_assign_resource(pdev, bar_num); - if (err) - return err; - err = pcim_enable_device(pdev); if (err) { dev_err(&pdev->dev, "failed to enable pci device: %d\n", err); -- cgit v1.2.3 From 6348f62ef7ecc5855b710a7d4ea682425c38bb80 Mon Sep 17 00:00:00 2001 From: Daniele Palmas Date: Tue, 1 Apr 2025 11:34:58 +0200 Subject: bus: mhi: host: pci_generic: Add Telit FN920C04 modem support Add SDX35 based modem Telit FN920C04. $ lspci -vv 01:00.0 Unassigned class [ff00]: Qualcomm Device 011a Subsystem: Device 1c5d:2020 Signed-off-by: Daniele Palmas Signed-off-by: Manivannan Sadhasivam Reviewed-by: Manivannan Sadhasivam Link: https://patch.msgid.link/20250401093458.2953872-1-dnlplm@gmail.com --- drivers/bus/mhi/host/pci_generic.c | 39 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) diff --git a/drivers/bus/mhi/host/pci_generic.c b/drivers/bus/mhi/host/pci_generic.c index 7501abc835c7..a4a62429c784 100644 --- a/drivers/bus/mhi/host/pci_generic.c +++ b/drivers/bus/mhi/host/pci_generic.c @@ -782,6 +782,42 @@ static const struct mhi_pci_dev_info mhi_telit_fe990a_info = { .mru_default = 32768, }; +static const struct mhi_channel_config mhi_telit_fn920c04_channels[] = { + MHI_CHANNEL_CONFIG_UL_SBL(2, "SAHARA", 32, 0), + MHI_CHANNEL_CONFIG_DL_SBL(3, "SAHARA", 32, 0), + MHI_CHANNEL_CONFIG_UL(4, "DIAG", 64, 1), + MHI_CHANNEL_CONFIG_DL(5, "DIAG", 64, 1), + MHI_CHANNEL_CONFIG_UL(14, "QMI", 32, 0), + MHI_CHANNEL_CONFIG_DL(15, "QMI", 32, 0), + MHI_CHANNEL_CONFIG_UL(32, "DUN", 32, 0), + MHI_CHANNEL_CONFIG_DL(33, "DUN", 32, 0), + MHI_CHANNEL_CONFIG_UL_FP(34, "FIREHOSE", 32, 0), + MHI_CHANNEL_CONFIG_DL_FP(35, "FIREHOSE", 32, 0), + MHI_CHANNEL_CONFIG_UL(92, "DUN2", 32, 1), + MHI_CHANNEL_CONFIG_DL(93, "DUN2", 32, 1), + MHI_CHANNEL_CONFIG_HW_UL(100, "IP_HW0", 128, 2), + MHI_CHANNEL_CONFIG_HW_DL(101, "IP_HW0", 128, 3), +}; + +static const struct mhi_controller_config modem_telit_fn920c04_config = { + .max_channels = 128, + .timeout_ms = 50000, + .num_channels = ARRAY_SIZE(mhi_telit_fn920c04_channels), + .ch_cfg = mhi_telit_fn920c04_channels, + .num_events = ARRAY_SIZE(mhi_telit_fn990_events), + .event_cfg = mhi_telit_fn990_events, +}; + +static const struct mhi_pci_dev_info mhi_telit_fn920c04_info = { + .name = "telit-fn920c04", + .config = &modem_telit_fn920c04_config, + .bar_num = MHI_PCI_DEFAULT_BAR_NUM, + .dma_data_width = 32, + .sideband_wake = false, + .mru_default = 32768, + .edl_trigger = true, +}; + static const struct mhi_pci_dev_info mhi_netprisma_lcur57_info = { .name = "netprisma-lcur57", .edl = "qcom/prog_firehose_sdx24.mbn", @@ -806,6 +842,9 @@ static const struct mhi_pci_dev_info mhi_netprisma_fcun69_info = { static const struct pci_device_id mhi_pci_id_table[] = { {PCI_DEVICE(PCI_VENDOR_ID_QCOM, 0x0116), .driver_data = (kernel_ulong_t) &mhi_qcom_sa8775p_info }, + /* Telit FN920C04 (sdx35) */ + {PCI_DEVICE_SUB(PCI_VENDOR_ID_QCOM, 0x011a, 0x1c5d, 0x2020), + .driver_data = (kernel_ulong_t) &mhi_telit_fn920c04_info }, { PCI_DEVICE(PCI_VENDOR_ID_QCOM, 0x0304), .driver_data = (kernel_ulong_t) &mhi_qcom_sdx24_info }, { PCI_DEVICE_SUB(PCI_VENDOR_ID_QCOM, 0x0306, PCI_VENDOR_ID_QCOM, 0x010c), -- cgit v1.2.3 From 40f682ae5086366d51e29e66eb8a344501245d0d Mon Sep 17 00:00:00 2001 From: Leo Yan Date: Tue, 1 Apr 2025 19:07:02 +0100 Subject: coresight: etm4x: Extract the trace unit controlling The trace unit is controlled in the ETM hardware enabling and disabling. The sequential changes for support AUX pause and resume will reuse the same operations. Extract the operations in the etm4_{enable|disable}_trace_unit() functions. A minor improvement in etm4_enable_trace_unit() is for returning the timeout error to callers. Signed-off-by: Leo Yan Reviewed-by: Mike Leach Reviewed-by: James Clark Signed-off-by: Suzuki K Poulose Link: https://lore.kernel.org/r/20250401180708.385396-2-leo.yan@arm.com --- drivers/hwtracing/coresight/coresight-etm4x-core.c | 103 +++++++++++++-------- 1 file changed, 62 insertions(+), 41 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-etm4x-core.c b/drivers/hwtracing/coresight/coresight-etm4x-core.c index 5c20ed4cf4ed..3e084280b23e 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x-core.c +++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c @@ -431,6 +431,44 @@ static int etm4x_wait_status(struct csdev_access *csa, int pos, int val) return coresight_timeout(csa, TRCSTATR, pos, val); } +static int etm4_enable_trace_unit(struct etmv4_drvdata *drvdata) +{ + struct coresight_device *csdev = drvdata->csdev; + struct device *etm_dev = &csdev->dev; + struct csdev_access *csa = &csdev->access; + + /* + * ETE mandates that the TRCRSR is written to before + * enabling it. + */ + if (etm4x_is_ete(drvdata)) + etm4x_relaxed_write32(csa, TRCRSR_TA, TRCRSR); + + etm4x_allow_trace(drvdata); + /* Enable the trace unit */ + etm4x_relaxed_write32(csa, 1, TRCPRGCTLR); + + /* Synchronize the register updates for sysreg access */ + if (!csa->io_mem) + isb(); + + /* wait for TRCSTATR.IDLE to go back down to '0' */ + if (etm4x_wait_status(csa, TRCSTATR_IDLE_BIT, 0)) { + dev_err(etm_dev, + "timeout while waiting for Idle Trace Status\n"); + return -ETIME; + } + + /* + * As recommended by section 4.3.7 ("Synchronization when using the + * memory-mapped interface") of ARM IHI 0064D + */ + dsb(sy); + isb(); + + return 0; +} + static int etm4_enable_hw(struct etmv4_drvdata *drvdata) { int i, rc; @@ -539,33 +577,7 @@ static int etm4_enable_hw(struct etmv4_drvdata *drvdata) etm4x_relaxed_write32(csa, trcpdcr | TRCPDCR_PU, TRCPDCR); } - /* - * ETE mandates that the TRCRSR is written to before - * enabling it. - */ - if (etm4x_is_ete(drvdata)) - etm4x_relaxed_write32(csa, TRCRSR_TA, TRCRSR); - - etm4x_allow_trace(drvdata); - /* Enable the trace unit */ - etm4x_relaxed_write32(csa, 1, TRCPRGCTLR); - - /* Synchronize the register updates for sysreg access */ - if (!csa->io_mem) - isb(); - - /* wait for TRCSTATR.IDLE to go back down to '0' */ - if (etm4x_wait_status(csa, TRCSTATR_IDLE_BIT, 0)) - dev_err(etm_dev, - "timeout while waiting for Idle Trace Status\n"); - - /* - * As recommended by section 4.3.7 ("Synchronization when using the - * memory-mapped interface") of ARM IHI 0064D - */ - dsb(sy); - isb(); - + rc = etm4_enable_trace_unit(drvdata); done: etm4_cs_lock(drvdata, csa); @@ -884,25 +896,12 @@ static int etm4_enable(struct coresight_device *csdev, struct perf_event *event, return ret; } -static void etm4_disable_hw(void *info) +static void etm4_disable_trace_unit(struct etmv4_drvdata *drvdata) { u32 control; - struct etmv4_drvdata *drvdata = info; - struct etmv4_config *config = &drvdata->config; struct coresight_device *csdev = drvdata->csdev; struct device *etm_dev = &csdev->dev; struct csdev_access *csa = &csdev->access; - int i; - - etm4_cs_unlock(drvdata, csa); - etm4_disable_arch_specific(drvdata); - - if (!drvdata->skip_power_up) { - /* power can be removed from the trace unit now */ - control = etm4x_relaxed_read32(csa, TRCPDCR); - control &= ~TRCPDCR_PU; - etm4x_relaxed_write32(csa, control, TRCPDCR); - } control = etm4x_relaxed_read32(csa, TRCPRGCTLR); @@ -943,6 +942,28 @@ static void etm4_disable_hw(void *info) * of ARM IHI 0064H.b. */ isb(); +} + +static void etm4_disable_hw(void *info) +{ + u32 control; + struct etmv4_drvdata *drvdata = info; + struct etmv4_config *config = &drvdata->config; + struct coresight_device *csdev = drvdata->csdev; + struct csdev_access *csa = &csdev->access; + int i; + + etm4_cs_unlock(drvdata, csa); + etm4_disable_arch_specific(drvdata); + + if (!drvdata->skip_power_up) { + /* power can be removed from the trace unit now */ + control = etm4x_relaxed_read32(csa, TRCPDCR); + control &= ~TRCPDCR_PU; + etm4x_relaxed_write32(csa, control, TRCPDCR); + } + + etm4_disable_trace_unit(drvdata); /* read the status of the single shot comparators */ for (i = 0; i < drvdata->nr_ss_cmp; i++) { -- cgit v1.2.3 From 5fa96c83b81e50833274f3b450ee9a8c0b2172bc Mon Sep 17 00:00:00 2001 From: Leo Yan Date: Tue, 1 Apr 2025 19:07:03 +0100 Subject: coresight: Introduce pause and resume APIs for source Introduce APIs for pausing and resuming trace source and export as GPL symbols. Signed-off-by: Leo Yan Reviewed-by: Mike Leach Reviewed-by: James Clark Signed-off-by: Suzuki K Poulose Link: https://lore.kernel.org/r/20250401180708.385396-3-leo.yan@arm.com --- drivers/hwtracing/coresight/coresight-core.c | 22 ++++++++++++++++++++++ drivers/hwtracing/coresight/coresight-priv.h | 2 ++ include/linux/coresight.h | 4 ++++ 3 files changed, 28 insertions(+) diff --git a/drivers/hwtracing/coresight/coresight-core.c b/drivers/hwtracing/coresight/coresight-core.c index 5632bcb8feb6..fa758cc21827 100644 --- a/drivers/hwtracing/coresight/coresight-core.c +++ b/drivers/hwtracing/coresight/coresight-core.c @@ -392,6 +392,28 @@ void coresight_disable_source(struct coresight_device *csdev, void *data) } EXPORT_SYMBOL_GPL(coresight_disable_source); +void coresight_pause_source(struct coresight_device *csdev) +{ + if (!coresight_is_percpu_source(csdev)) + return; + + if (source_ops(csdev)->pause_perf) + source_ops(csdev)->pause_perf(csdev); +} +EXPORT_SYMBOL_GPL(coresight_pause_source); + +int coresight_resume_source(struct coresight_device *csdev) +{ + if (!coresight_is_percpu_source(csdev)) + return -EOPNOTSUPP; + + if (!source_ops(csdev)->resume_perf) + return -EOPNOTSUPP; + + return source_ops(csdev)->resume_perf(csdev); +} +EXPORT_SYMBOL_GPL(coresight_resume_source); + /* * coresight_disable_path_from : Disable components in the given path beyond * @nd in the list. If @nd is NULL, all the components, except the SOURCE are diff --git a/drivers/hwtracing/coresight/coresight-priv.h b/drivers/hwtracing/coresight/coresight-priv.h index ce91e0fbb497..33e22b1ba043 100644 --- a/drivers/hwtracing/coresight/coresight-priv.h +++ b/drivers/hwtracing/coresight/coresight-priv.h @@ -251,5 +251,7 @@ void coresight_add_helper(struct coresight_device *csdev, void coresight_set_percpu_sink(int cpu, struct coresight_device *csdev); struct coresight_device *coresight_get_percpu_sink(int cpu); void coresight_disable_source(struct coresight_device *csdev, void *data); +void coresight_pause_source(struct coresight_device *csdev); +int coresight_resume_source(struct coresight_device *csdev); #endif diff --git a/include/linux/coresight.h b/include/linux/coresight.h index 8abdd8b5c791..4ac65c68bbf4 100644 --- a/include/linux/coresight.h +++ b/include/linux/coresight.h @@ -398,6 +398,8 @@ struct coresight_ops_link { * is associated to. * @enable: enables tracing for a source. * @disable: disables tracing for a source. + * @resume_perf: resumes tracing for a source in perf session. + * @pause_perf: pauses tracing for a source in perf session. */ struct coresight_ops_source { int (*cpu_id)(struct coresight_device *csdev); @@ -405,6 +407,8 @@ struct coresight_ops_source { enum cs_mode mode, struct coresight_path *path); void (*disable)(struct coresight_device *csdev, struct perf_event *event); + int (*resume_perf)(struct coresight_device *csdev); + void (*pause_perf)(struct coresight_device *csdev); }; /** -- cgit v1.2.3 From 0814151bae4b50d49514666b5f06920ce3eb829b Mon Sep 17 00:00:00 2001 From: Leo Yan Date: Tue, 1 Apr 2025 19:07:04 +0100 Subject: coresight: etm4x: Hook pause and resume callbacks Add callbacks for pausing and resuming the tracer. A "paused" flag in the driver data indicates whether the tracer is paused. If the flag is set, the driver will skip starting the hardware trace. The flag is always set to false for the sysfs mode, meaning the tracer will never be paused in the case. Signed-off-by: Leo Yan Reviewed-by: Mike Leach Reviewed-by: James Clark Signed-off-by: Suzuki K Poulose Link: https://lore.kernel.org/r/20250401180708.385396-4-leo.yan@arm.com --- drivers/hwtracing/coresight/coresight-etm4x-core.c | 42 +++++++++++++++++++++- drivers/hwtracing/coresight/coresight-etm4x.h | 2 ++ 2 files changed, 43 insertions(+), 1 deletion(-) diff --git a/drivers/hwtracing/coresight/coresight-etm4x-core.c b/drivers/hwtracing/coresight/coresight-etm4x-core.c index 3e084280b23e..6a5898355a83 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x-core.c +++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c @@ -577,7 +577,8 @@ static int etm4_enable_hw(struct etmv4_drvdata *drvdata) etm4x_relaxed_write32(csa, trcpdcr | TRCPDCR_PU, TRCPDCR); } - rc = etm4_enable_trace_unit(drvdata); + if (!drvdata->paused) + rc = etm4_enable_trace_unit(drvdata); done: etm4_cs_lock(drvdata, csa); @@ -820,6 +821,9 @@ static int etm4_enable_perf(struct coresight_device *csdev, drvdata->trcid = path->trace_id; + /* Populate pause state */ + drvdata->paused = !!READ_ONCE(event->hw.aux_paused); + /* And enable it */ ret = etm4_enable_hw(drvdata); @@ -846,6 +850,9 @@ static int etm4_enable_sysfs(struct coresight_device *csdev, struct coresight_pa drvdata->trcid = path->trace_id; + /* Tracer will never be paused in sysfs mode */ + drvdata->paused = false; + /* * Executing etm4_enable_hw on the cpu whose ETM is being enabled * ensures that register writes occur when cpu is powered. @@ -1080,10 +1087,43 @@ static void etm4_disable(struct coresight_device *csdev, coresight_set_mode(csdev, CS_MODE_DISABLED); } +static int etm4_resume_perf(struct coresight_device *csdev) +{ + struct etmv4_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); + struct csdev_access *csa = &csdev->access; + + if (coresight_get_mode(csdev) != CS_MODE_PERF) + return -EINVAL; + + etm4_cs_unlock(drvdata, csa); + etm4_enable_trace_unit(drvdata); + etm4_cs_lock(drvdata, csa); + + drvdata->paused = false; + return 0; +} + +static void etm4_pause_perf(struct coresight_device *csdev) +{ + struct etmv4_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); + struct csdev_access *csa = &csdev->access; + + if (coresight_get_mode(csdev) != CS_MODE_PERF) + return; + + etm4_cs_unlock(drvdata, csa); + etm4_disable_trace_unit(drvdata); + etm4_cs_lock(drvdata, csa); + + drvdata->paused = true; +} + static const struct coresight_ops_source etm4_source_ops = { .cpu_id = etm4_cpu_id, .enable = etm4_enable, .disable = etm4_disable, + .resume_perf = etm4_resume_perf, + .pause_perf = etm4_pause_perf, }; static const struct coresight_ops etm4_cs_ops = { diff --git a/drivers/hwtracing/coresight/coresight-etm4x.h b/drivers/hwtracing/coresight/coresight-etm4x.h index bd7db36ba197..ac649515054d 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x.h +++ b/drivers/hwtracing/coresight/coresight-etm4x.h @@ -983,6 +983,7 @@ struct etmv4_save_state { * @state_needs_restore: True when there is context to restore after PM exit * @skip_power_up: Indicates if an implementation can skip powering up * the trace unit. + * @paused: Indicates if the trace unit is paused. * @arch_features: Bitmap of arch features of etmv4 devices. */ struct etmv4_drvdata { @@ -1036,6 +1037,7 @@ struct etmv4_drvdata { struct etmv4_save_state *save_state; bool state_needs_restore; bool skip_power_up; + bool paused; DECLARE_BITMAP(arch_features, ETM4_IMPDEF_FEATURE_MAX); }; -- cgit v1.2.3 From abffe22e93d7a25b69a8884fda6a50ed81d7ae06 Mon Sep 17 00:00:00 2001 From: Leo Yan Date: Tue, 1 Apr 2025 19:07:05 +0100 Subject: coresight: perf: Support AUX trace pause and resume This commit supports AUX trace pause and resume in a perf session for Arm CoreSight. First, we need to decide which flag can indicate the CoreSight PMU event has started. The 'event->hw.state' cannot be used for this purpose because its initial value and the value after hardware trace enabling are both 0. On the other hand, the context value 'ctxt->event_data' stores the ETM private info. This pointer is valid only when the PMU event has been enabled. It is safe to permit AUX trace pause and resume operations only when it is not a NULL pointer. To achieve fine-grained control of the pause and resume, only the tracer is disabled and enabled. This avoids the unnecessary complexity and latency caused by manipulating the entire link path. Signed-off-by: Leo Yan Reviewed-by: Mike Leach Reviewed-by: James Clark Signed-off-by: Suzuki K Poulose Link: https://lore.kernel.org/r/20250401180708.385396-5-leo.yan@arm.com --- drivers/hwtracing/coresight/coresight-etm-perf.c | 45 +++++++++++++++++++++++- 1 file changed, 44 insertions(+), 1 deletion(-) diff --git a/drivers/hwtracing/coresight/coresight-etm-perf.c b/drivers/hwtracing/coresight/coresight-etm-perf.c index f4cccd68e625..2dcf1809cb7f 100644 --- a/drivers/hwtracing/coresight/coresight-etm-perf.c +++ b/drivers/hwtracing/coresight/coresight-etm-perf.c @@ -365,6 +365,18 @@ static void *etm_setup_aux(struct perf_event *event, void **pages, continue; } + /* + * If AUX pause feature is enabled but the ETM driver does not + * support the operations, clear this CPU from the mask and + * continue to next one. + */ + if (event->attr.aux_start_paused && + (!source_ops(csdev)->pause_perf || !source_ops(csdev)->resume_perf)) { + dev_err_once(&csdev->dev, "AUX pause is not supported.\n"); + cpumask_clear_cpu(cpu, mask); + continue; + } + /* * No sink provided - look for a default sink for all the ETMs, * where this event can be scheduled. @@ -450,6 +462,15 @@ err: goto out; } +static int etm_event_resume(struct coresight_device *csdev, + struct etm_ctxt *ctxt) +{ + if (!ctxt->event_data) + return 0; + + return coresight_resume_source(csdev); +} + static void etm_event_start(struct perf_event *event, int flags) { int cpu = smp_processor_id(); @@ -463,6 +484,14 @@ static void etm_event_start(struct perf_event *event, int flags) if (!csdev) goto fail; + if (flags & PERF_EF_RESUME) { + if (etm_event_resume(csdev, ctxt) < 0) { + dev_err(&csdev->dev, "Failed to resume ETM event.\n"); + goto fail; + } + return; + } + /* Have we messed up our tracking ? */ if (WARN_ON(ctxt->event_data)) goto fail; @@ -545,6 +574,16 @@ fail: return; } +static void etm_event_pause(struct coresight_device *csdev, + struct etm_ctxt *ctxt) +{ + if (!ctxt->event_data) + return; + + /* Stop tracer */ + coresight_pause_source(csdev); +} + static void etm_event_stop(struct perf_event *event, int mode) { int cpu = smp_processor_id(); @@ -555,6 +594,9 @@ static void etm_event_stop(struct perf_event *event, int mode) struct etm_event_data *event_data; struct coresight_path *path; + if (mode & PERF_EF_PAUSE) + return etm_event_pause(csdev, ctxt); + /* * If we still have access to the event_data via handle, * confirm that we haven't messed up the tracking. @@ -899,7 +941,8 @@ int __init etm_perf_init(void) int ret; etm_pmu.capabilities = (PERF_PMU_CAP_EXCLUSIVE | - PERF_PMU_CAP_ITRACE); + PERF_PMU_CAP_ITRACE | + PERF_PMU_CAP_AUX_PAUSE); etm_pmu.attr_groups = etm_pmu_attr_groups; etm_pmu.task_ctx_nr = perf_sw_context; -- cgit v1.2.3 From d5f7e4bea90f2e0630b0c76b0f6cf64304c5b514 Mon Sep 17 00:00:00 2001 From: Leo Yan Date: Tue, 1 Apr 2025 19:07:06 +0100 Subject: coresight: tmc: Re-enable sink after buffer update The buffer update callbacks disable the sink before syncing data but misses to re-enable it afterward. This is fine in the general flow, because the sink will be re-enabled the next time the PMU event is activated. However, during AUX pause and resume, if the sink is disabled in the buffer update callback, there is no chance to re-enable it when AUX resumes. To address this, the callbacks now check the event state 'event->hw.state'. If the event is an active state (0), the sink is re-enabled. For the TMC ETR driver, buffer updates are not fully protected by the driver's spinlock. In this case, the sink is not re-enabled if its reference counter is 0, in order to avoid race conditions where the sink may have been completely disabled. Signed-off-by: Leo Yan Reviewed-by: Mike Leach Reviewed-by: James Clark Signed-off-by: Suzuki K Poulose Link: https://lore.kernel.org/r/20250401180708.385396-6-leo.yan@arm.com --- drivers/hwtracing/coresight/coresight-tmc-etf.c | 9 +++++++++ drivers/hwtracing/coresight/coresight-tmc-etr.c | 10 ++++++++++ 2 files changed, 19 insertions(+) diff --git a/drivers/hwtracing/coresight/coresight-tmc-etf.c b/drivers/hwtracing/coresight/coresight-tmc-etf.c index d858740001c2..7584cc03d8e6 100644 --- a/drivers/hwtracing/coresight/coresight-tmc-etf.c +++ b/drivers/hwtracing/coresight/coresight-tmc-etf.c @@ -482,6 +482,7 @@ static unsigned long tmc_update_etf_buffer(struct coresight_device *csdev, unsigned long offset, to_read = 0, flags; struct cs_buffers *buf = sink_config; struct tmc_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); + struct perf_event *event = handle->event; if (!buf) return 0; @@ -586,6 +587,14 @@ static unsigned long tmc_update_etf_buffer(struct coresight_device *csdev, * is expected by the perf ring buffer. */ CS_LOCK(drvdata->base); + + /* + * If the event is active, it is triggered during an AUX pause. + * Re-enable the sink so that it is ready when AUX resume is invoked. + */ + if (!event->hw.state) + __tmc_etb_enable_hw(drvdata); + out: raw_spin_unlock_irqrestore(&drvdata->spinlock, flags); diff --git a/drivers/hwtracing/coresight/coresight-tmc-etr.c b/drivers/hwtracing/coresight/coresight-tmc-etr.c index 3f31ad2ae65d..b07fcdb3fe1a 100644 --- a/drivers/hwtracing/coresight/coresight-tmc-etr.c +++ b/drivers/hwtracing/coresight/coresight-tmc-etr.c @@ -1634,6 +1634,7 @@ tmc_update_etr_buffer(struct coresight_device *csdev, struct tmc_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); struct etr_perf_buffer *etr_perf = config; struct etr_buf *etr_buf = etr_perf->etr_buf; + struct perf_event *event = handle->event; raw_spin_lock_irqsave(&drvdata->spinlock, flags); @@ -1703,6 +1704,15 @@ tmc_update_etr_buffer(struct coresight_device *csdev, */ smp_wmb(); + /* + * If the event is active, it is triggered during an AUX pause. + * Re-enable the sink so that it is ready when AUX resume is invoked. + */ + raw_spin_lock_irqsave(&drvdata->spinlock, flags); + if (csdev->refcnt && !event->hw.state) + __tmc_etr_enable_hw(drvdata); + raw_spin_unlock_irqrestore(&drvdata->spinlock, flags); + out: /* * Don't set the TRUNCATED flag in snapshot mode because 1) the -- cgit v1.2.3 From 973f47a9886ac45525985790dffbf5ddeb5097a9 Mon Sep 17 00:00:00 2001 From: Leo Yan Date: Tue, 1 Apr 2025 19:07:07 +0100 Subject: coresight: perf: Update buffer on AUX pause Due to sinks like ETR and ETB don't support interrupt handling, the hardware trace data might be lost for continuous running tasks. This commit takes advantage of the AUX pause for updating trace buffer to mitigate the trace data losing issue. The per CPU sink has its own interrupt handling. Thus, there will be a race condition between the updating buffer in NMI and sink's interrupt handler. To avoid the race condition, this commit disallows updating buffer on AUX pause for the per CPU sink. Currently, this is only applied for TRBE. Signed-off-by: Leo Yan Reviewed-by: James Clark Signed-off-by: Suzuki K Poulose Link: https://lore.kernel.org/r/20250401180708.385396-7-leo.yan@arm.com --- drivers/hwtracing/coresight/coresight-etm-perf.c | 43 ++++++++++++++++++++++-- 1 file changed, 41 insertions(+), 2 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-etm-perf.c b/drivers/hwtracing/coresight/coresight-etm-perf.c index 2dcf1809cb7f..f1551c08ecb2 100644 --- a/drivers/hwtracing/coresight/coresight-etm-perf.c +++ b/drivers/hwtracing/coresight/coresight-etm-perf.c @@ -574,14 +574,53 @@ fail: return; } -static void etm_event_pause(struct coresight_device *csdev, +static void etm_event_pause(struct perf_event *event, + struct coresight_device *csdev, struct etm_ctxt *ctxt) { + int cpu = smp_processor_id(); + struct coresight_device *sink; + struct perf_output_handle *handle = &ctxt->handle; + struct coresight_path *path; + unsigned long size; + if (!ctxt->event_data) return; /* Stop tracer */ coresight_pause_source(csdev); + + path = etm_event_cpu_path(ctxt->event_data, cpu); + sink = coresight_get_sink(path); + if (WARN_ON_ONCE(!sink)) + return; + + /* + * The per CPU sink has own interrupt handling, it might have + * race condition with updating buffer on AUX trace pause if + * it is invoked from NMI. To avoid the race condition, + * disallows updating buffer for the per CPU sink case. + */ + if (coresight_is_percpu_sink(sink)) + return; + + if (WARN_ON_ONCE(handle->event != event)) + return; + + if (!sink_ops(sink)->update_buffer) + return; + + size = sink_ops(sink)->update_buffer(sink, handle, + ctxt->event_data->snk_config); + if (READ_ONCE(handle->event)) { + if (!size) + return; + + perf_aux_output_end(handle, size); + perf_aux_output_begin(handle, event); + } else { + WARN_ON_ONCE(size); + } } static void etm_event_stop(struct perf_event *event, int mode) @@ -595,7 +634,7 @@ static void etm_event_stop(struct perf_event *event, int mode) struct coresight_path *path; if (mode & PERF_EF_PAUSE) - return etm_event_pause(csdev, ctxt); + return etm_event_pause(event, csdev, ctxt); /* * If we still have access to the event_data via handle, -- cgit v1.2.3 From 5161890f13623175924376bc423edb63d9cb28b5 Mon Sep 17 00:00:00 2001 From: Leo Yan Date: Tue, 1 Apr 2025 19:07:08 +0100 Subject: Documentation: coresight: Document AUX pause and resume This adds description for AUX pause and resume. It gives introduction for what's AUX pause and resume and records usage examples. Signed-off-by: Leo Yan Reviewed-by: James Clark Signed-off-by: Suzuki K Poulose Link: https://lore.kernel.org/r/20250401180708.385396-8-leo.yan@arm.com --- Documentation/trace/coresight/coresight-perf.rst | 31 ++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/Documentation/trace/coresight/coresight-perf.rst b/Documentation/trace/coresight/coresight-perf.rst index d087aae7d492..30be89320621 100644 --- a/Documentation/trace/coresight/coresight-perf.rst +++ b/Documentation/trace/coresight/coresight-perf.rst @@ -78,6 +78,37 @@ enabled like:: Please refer to the kernel configuration help for more information. +Fine-grained tracing with AUX pause and resume +---------------------------------------------- + +Arm CoreSight may generate a large amount of hardware trace data, which +will lead to overhead in recording and distract users when reviewing +profiling result. To mitigate the issue of excessive trace data, Perf +provides AUX pause and resume functionality for fine-grained tracing. + +The AUX pause and resume can be triggered by associated events. These +events can be ftrace tracepoints (including static and dynamic +tracepoints) or PMU events (e.g. CPU PMU cycle event). To create a perf +session with AUX pause / resume, three configuration terms are +introduced: + +- "aux-action=start-paused": it is specified for the cs_etm PMU event to + launch in a paused state. +- "aux-action=pause": an associated event is specified with this term + to pause AUX trace. +- "aux-action=resume": an associated event is specified with this term + to resume AUX trace. + +Example for triggering AUX pause and resume with ftrace tracepoints:: + + perf record -e cs_etm/aux-action=start-paused/k,syscalls:sys_enter_openat/aux-action=resume/,syscalls:sys_exit_openat/aux-action=pause/ ls + +Example for triggering AUX pause and resume with PMU event:: + + perf record -a -e cs_etm/aux-action=start-paused/k \ + -e cycles/aux-action=pause,period=10000000/ \ + -e cycles/aux-action=resume,period=1050000/ -- sleep 1 + Perf test - Verify kernel and userspace perf CoreSight work ----------------------------------------------------------- -- cgit v1.2.3 From d23bc38e8aa4efbd617bf660bb1a25fee9f6c177 Mon Sep 17 00:00:00 2001 From: Mao Jinlong Date: Tue, 6 May 2025 23:37:16 -0700 Subject: coresight: tmc: fix failure to disable/enable ETF after reading ETF may fail to re-enable after reading, and driver->reading will not be set to false, this will cause failure to enable/disable to ETF. This change set driver->reading to false even if re-enabling fail. Fixes: 669c4614236a ("coresight: tmc: Don't enable TMC when it's not ready.") Co-developed-by: Yuanfang Zhang Signed-off-by: Yuanfang Zhang Signed-off-by: Mao Jinlong [ Added a comment to explain why we ignore the error ] Signed-off-by: Suzuki K Poulose Link: https://lore.kernel.org/r/20250507063716.1945213-1-quic_jinlmao@quicinc.com --- drivers/hwtracing/coresight/coresight-tmc-etf.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-tmc-etf.c b/drivers/hwtracing/coresight/coresight-tmc-etf.c index 7584cc03d8e6..0f45ab5e5249 100644 --- a/drivers/hwtracing/coresight/coresight-tmc-etf.c +++ b/drivers/hwtracing/coresight/coresight-tmc-etf.c @@ -756,7 +756,6 @@ int tmc_read_unprepare_etb(struct tmc_drvdata *drvdata) char *buf = NULL; enum tmc_mode mode; unsigned long flags; - int rc = 0; /* config types are set a boot time and never change */ if (WARN_ON_ONCE(drvdata->config_type != TMC_CONFIG_TYPE_ETB && @@ -782,11 +781,11 @@ int tmc_read_unprepare_etb(struct tmc_drvdata *drvdata) * can't be NULL. */ memset(drvdata->buf, 0, drvdata->size); - rc = __tmc_etb_enable_hw(drvdata); - if (rc) { - raw_spin_unlock_irqrestore(&drvdata->spinlock, flags); - return rc; - } + /* + * Ignore failures to enable the TMC to make sure, we don't + * leave the TMC in a "reading" state. + */ + __tmc_etb_enable_hw(drvdata); } else { /* * The ETB/ETF is not tracing and the buffer was just read. -- cgit v1.2.3 From ace2cd11a27231efcb8a116a597edab2eef34957 Mon Sep 17 00:00:00 2001 From: Fabrice Gasnier Date: Fri, 10 Jan 2025 10:19:17 +0100 Subject: counter: stm32-timer-cnt: add support for stm32mp25 Add support for STM32MP25 SoC. There are new counter modes that may be implemented in later. Still, use newly introduced compatible to handle this new HW variant and avoid being blocked with existing compatible in SoC dtsi file. Modes supported currently still remains compatible. New timer 20 has encoder capability, add it to the list. Signed-off-by: Fabrice Gasnier Link: https://lore.kernel.org/r/20250110091922.980627-4-fabrice.gasnier@foss.st.com Signed-off-by: William Breathitt Gray --- drivers/counter/stm32-timer-cnt.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/counter/stm32-timer-cnt.c b/drivers/counter/stm32-timer-cnt.c index e75b69476a00..3d3384cbea87 100644 --- a/drivers/counter/stm32-timer-cnt.c +++ b/drivers/counter/stm32-timer-cnt.c @@ -669,12 +669,14 @@ static void stm32_timer_cnt_detect_channels(struct device *dev, dev_dbg(dev, "has %d cc channels\n", priv->nchannels); } -/* encoder supported on TIM1 TIM2 TIM3 TIM4 TIM5 TIM8 */ -#define STM32_TIM_ENCODER_SUPPORTED (BIT(0) | BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(7)) +/* encoder supported on TIM1 TIM2 TIM3 TIM4 TIM5 TIM8 TIM20 */ +#define STM32_TIM_ENCODER_SUPPORTED (BIT(0) | BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(7) | \ + BIT(19)) static const char * const stm32_timer_trigger_compat[] = { "st,stm32-timer-trigger", "st,stm32h7-timer-trigger", + "st,stm32mp25-timer-trigger", }; static int stm32_timer_cnt_probe_encoder(struct device *dev, @@ -846,6 +848,7 @@ static SIMPLE_DEV_PM_OPS(stm32_timer_cnt_pm_ops, stm32_timer_cnt_suspend, static const struct of_device_id stm32_timer_cnt_of_match[] = { { .compatible = "st,stm32-timer-counter", }, + { .compatible = "st,stm32mp25-timer-counter", }, {}, }; MODULE_DEVICE_TABLE(of, stm32_timer_cnt_of_match); -- cgit v1.2.3 From 7cdfbc0113d087348b8e65dd79276d0f57b89a10 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Mon, 5 May 2025 13:28:40 -0500 Subject: iio: adc: ad7944: mask high bits on direct read MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Apply a mask to the raw value received over the SPI bus for unsigned direct reads. As we found recently, SPI controllers may not set unused bits to 0 when reading with bits_per_word != {8,16,32}. The ad7944 uses bits_per_word of 14 and 18, so we need to mask the value to be sure we returning the correct value to userspace during a direct read. Fixes: d1efcf8871db ("iio: adc: ad7944: add driver for AD7944/AD7985/AD7986") Signed-off-by: David Lechner Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250505-iio-adc-ad7944-max-high-bits-on-direct-read-v1-1-b173facceefe@baylibre.com Cc: Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7944.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/iio/adc/ad7944.c b/drivers/iio/adc/ad7944.c index 2f949fe55873..37a137bd8357 100644 --- a/drivers/iio/adc/ad7944.c +++ b/drivers/iio/adc/ad7944.c @@ -377,6 +377,8 @@ static int ad7944_single_conversion(struct ad7944_adc *adc, if (chan->scan_type.sign == 's') *val = sign_extend32(*val, chan->scan_type.realbits - 1); + else + *val &= GENMASK(chan->scan_type.realbits - 1, 0); return IIO_VAL_INT; } -- cgit v1.2.3 From 16038474e3a0263572f36326ef85057aaf341814 Mon Sep 17 00:00:00 2001 From: Sean Nyekjaer Date: Mon, 5 May 2025 21:20:07 +0200 Subject: iio: accel: fxls8962af: Fix temperature calculation According to spec temperature should be returned in milli degrees Celsius. Add in_temp_scale to calculate from Celsius to milli Celsius. Fixes: a3e0b51884ee ("iio: accel: add support for FXLS8962AF/FXLS8964AF accelerometers") Cc: stable@vger.kernel.org Reviewed-by: Marcelo Schmitt Signed-off-by: Sean Nyekjaer Link: https://patch.msgid.link/20250505-fxls-v4-1-a38652e21738@geanix.com Signed-off-by: Jonathan Cameron --- drivers/iio/accel/fxls8962af-core.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/drivers/iio/accel/fxls8962af-core.c b/drivers/iio/accel/fxls8962af-core.c index bf1d3923a181..5f5e917f7aa5 100644 --- a/drivers/iio/accel/fxls8962af-core.c +++ b/drivers/iio/accel/fxls8962af-core.c @@ -23,6 +23,7 @@ #include #include #include +#include #include #include @@ -439,8 +440,16 @@ static int fxls8962af_read_raw(struct iio_dev *indio_dev, *val = FXLS8962AF_TEMP_CENTER_VAL; return IIO_VAL_INT; case IIO_CHAN_INFO_SCALE: - *val = 0; - return fxls8962af_read_full_scale(data, val2); + switch (chan->type) { + case IIO_TEMP: + *val = MILLIDEGREE_PER_DEGREE; + return IIO_VAL_INT; + case IIO_ACCEL: + *val = 0; + return fxls8962af_read_full_scale(data, val2); + default: + return -EINVAL; + } case IIO_CHAN_INFO_SAMP_FREQ: return fxls8962af_read_samp_freq(data, val, val2); default: @@ -736,6 +745,7 @@ static const struct iio_event_spec fxls8962af_event[] = { .type = IIO_TEMP, \ .address = FXLS8962AF_TEMP_OUT, \ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \ + BIT(IIO_CHAN_INFO_SCALE) | \ BIT(IIO_CHAN_INFO_OFFSET),\ .scan_index = -1, \ .scan_type = { \ -- cgit v1.2.3 From 9c78317b42e7c32523c91099859bc4721e9f75dd Mon Sep 17 00:00:00 2001 From: Sean Nyekjaer Date: Mon, 5 May 2025 21:20:08 +0200 Subject: iio: accel: fxls8962af: Fix temperature scan element sign Mark the temperature element signed, data read from the TEMP_OUT register is in two's complement format. This will avoid the temperature being mishandled and miss displayed. Fixes: a3e0b51884ee ("iio: accel: add support for FXLS8962AF/FXLS8964AF accelerometers") Suggested-by: Marcelo Schmitt Cc: stable@vger.kernel.org Reviewed-by: Marcelo Schmitt Signed-off-by: Sean Nyekjaer Link: https://patch.msgid.link/20250505-fxls-v4-2-a38652e21738@geanix.com Signed-off-by: Jonathan Cameron --- drivers/iio/accel/fxls8962af-core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/iio/accel/fxls8962af-core.c b/drivers/iio/accel/fxls8962af-core.c index 5f5e917f7aa5..ae965a8f560d 100644 --- a/drivers/iio/accel/fxls8962af-core.c +++ b/drivers/iio/accel/fxls8962af-core.c @@ -749,6 +749,7 @@ static const struct iio_event_spec fxls8962af_event[] = { BIT(IIO_CHAN_INFO_OFFSET),\ .scan_index = -1, \ .scan_type = { \ + .sign = 's', \ .realbits = 8, \ .storagebits = 8, \ }, \ -- cgit v1.2.3 From b0779ea486061a1756892f4ea43e258e5dd559cd Mon Sep 17 00:00:00 2001 From: Neil Armstrong Date: Mon, 19 May 2025 15:57:02 +0200 Subject: interconnect: qcom: sm8650: remove regmap config for mc_virt & clk_virt The mc_virt & clk_virt nodes are virtual and doesn't have associated registers, thus the regmap config will fail with: qnoc-sm8650 interconnect-0: error -EINVAL: invalid resource (null) Remove the regmap config since QoS will never be applied to those virtual nodes. Reported-by: Pengyu Luo Fixes: 40ef9b6b778f ("interconnect: qcom: sm8650: enable QoS configuration") Signed-off-by: Neil Armstrong Link: https://lore.kernel.org/r/20250519-topic-sm8650-upstream-icc-qos-fix-v1-1-6ace779250aa@linaro.org Signed-off-by: Georgi Djakov --- drivers/interconnect/qcom/sm8650.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/interconnect/qcom/sm8650.c b/drivers/interconnect/qcom/sm8650.c index 1eb2cc3bea67..b7c321f4e4b5 100644 --- a/drivers/interconnect/qcom/sm8650.c +++ b/drivers/interconnect/qcom/sm8650.c @@ -1701,7 +1701,6 @@ static struct qcom_icc_node * const clk_virt_nodes[] = { }; static const struct qcom_icc_desc sm8650_clk_virt = { - .config = &icc_regmap_config, .nodes = clk_virt_nodes, .num_nodes = ARRAY_SIZE(clk_virt_nodes), .bcms = clk_virt_bcms, @@ -1881,7 +1880,6 @@ static struct qcom_icc_node * const mc_virt_nodes[] = { }; static const struct qcom_icc_desc sm8650_mc_virt = { - .config = &icc_regmap_config, .nodes = mc_virt_nodes, .num_nodes = ARRAY_SIZE(mc_virt_nodes), .bcms = mc_virt_bcms, -- cgit v1.2.3 From ee811bc733be5c57a2bfecdf2f6f5d4db466200a Mon Sep 17 00:00:00 2001 From: Leo Yan Date: Mon, 19 May 2025 18:49:44 +0100 Subject: coresight: etm4x: Fix timestamp bit field handling Timestamps in the trace data appear as all zeros on recent kernels, although the feature works correctly on old kernels (e.g., v6.12). Since commit c382ee674c8b ("arm64/sysreg/tools: Move TRFCR definitions to sysreg"), the TRFCR_ELx_TS_{VIRTUAL|GUEST_PHYSICAL|PHYSICAL} macros were updated to remove the bit shift. As a result, the driver no longer shifts bits when operates the timestamp field. Fix this by using the FIELD_PREP() and FIELD_GET() helpers. Reported-by: Tamas Zsoldos Fixes: c382ee674c8b ("arm64/sysreg/tools: Move TRFCR definitions to sysreg") Signed-off-by: Leo Yan Reviewed-by: James Clark Signed-off-by: Suzuki K Poulose Link: https://lore.kernel.org/r/20250519174945.2245271-2-leo.yan@arm.com --- drivers/hwtracing/coresight/coresight-etm4x-core.c | 2 +- drivers/hwtracing/coresight/coresight-etm4x-sysfs.c | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-etm4x-core.c b/drivers/hwtracing/coresight/coresight-etm4x-core.c index 6a5898355a83..acb4a58e4bb9 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x-core.c +++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c @@ -1237,7 +1237,7 @@ static void cpu_detect_trace_filtering(struct etmv4_drvdata *drvdata) * tracing at the kernel EL and EL0, forcing to use the * virtual time as the timestamp. */ - trfcr = (TRFCR_EL1_TS_VIRTUAL | + trfcr = (FIELD_PREP(TRFCR_EL1_TS_MASK, TRFCR_EL1_TS_VIRTUAL) | TRFCR_EL1_ExTRE | TRFCR_EL1_E0TRE); diff --git a/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c b/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c index 49d5fb87a74b..ab251865b893 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c +++ b/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c @@ -2320,11 +2320,11 @@ static ssize_t ts_source_show(struct device *dev, goto out; } - switch (drvdata->trfcr & TRFCR_EL1_TS_MASK) { + val = FIELD_GET(TRFCR_EL1_TS_MASK, drvdata->trfcr); + switch (val) { case TRFCR_EL1_TS_VIRTUAL: case TRFCR_EL1_TS_GUEST_PHYSICAL: case TRFCR_EL1_TS_PHYSICAL: - val = FIELD_GET(TRFCR_EL1_TS_MASK, drvdata->trfcr); break; default: val = -1; -- cgit v1.2.3 From 895b12b7d7b8c651f73f57a1ea040d35aa7048cb Mon Sep 17 00:00:00 2001 From: Yeoreum Yun Date: Wed, 14 May 2025 17:19:49 +0100 Subject: coresight/etm4: fix missing disable active config When etm4 device is disabled via sysfs, it should disable its active count. Fixes: 7ebd0ec6cf94 ("coresight: configfs: Allow configfs to activate configuration") Signed-off-by: Yeoreum Yun Reviewed-by: Leo Yan Signed-off-by: Suzuki K Poulose Link: https://lore.kernel.org/r/20250514161951.3427590-2-yeoreum.yun@arm.com --- drivers/hwtracing/coresight/coresight-etm4x-core.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/hwtracing/coresight/coresight-etm4x-core.c b/drivers/hwtracing/coresight/coresight-etm4x-core.c index acb4a58e4bb9..42e5d37403ad 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x-core.c +++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c @@ -1048,6 +1048,9 @@ static void etm4_disable_sysfs(struct coresight_device *csdev) smp_call_function_single(drvdata->cpu, etm4_disable_hw, drvdata, 1); raw_spin_unlock(&drvdata->spinlock); + + cscfg_csdev_disable_active_config(csdev); + cpus_read_unlock(); /* -- cgit v1.2.3 From 53b9e2659719b04f5ba7593f2af0f2335f75e94a Mon Sep 17 00:00:00 2001 From: Yeoreum Yun Date: Wed, 14 May 2025 17:19:50 +0100 Subject: coresight: holding cscfg_csdev_lock while removing cscfg from csdev There'll be possible race scenario for coresight config: CPU0 CPU1 (perf enable) load module cscfg_load_config_sets() activate config. // sysfs (sys_active_cnt == 1) ... cscfg_csdev_enable_active_config() lock(csdev->cscfg_csdev_lock) deactivate config // sysfs (sys_activec_cnt == 0) cscfg_unload_config_sets() cscfg_remove_owned_csdev_configs() // here load config activate by CPU1 unlock(csdev->cscfg_csdev_lock) iterating config_csdev_list could be raced with config_csdev_list's entry delete. To resolve this race , hold csdev->cscfg_csdev_lock() while cscfg_remove_owned_csdev_configs() Fixes: 02bd588e12df ("coresight: configuration: Update API to permit dynamic load/unload") Signed-off-by: Yeoreum Yun Reviewed-by: Leo Yan Signed-off-by: Suzuki K Poulose Link: https://lore.kernel.org/r/20250514161951.3427590-3-yeoreum.yun@arm.com --- drivers/hwtracing/coresight/coresight-syscfg.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/hwtracing/coresight/coresight-syscfg.c b/drivers/hwtracing/coresight/coresight-syscfg.c index a70c1454b410..23017612f2ea 100644 --- a/drivers/hwtracing/coresight/coresight-syscfg.c +++ b/drivers/hwtracing/coresight/coresight-syscfg.c @@ -395,6 +395,8 @@ static void cscfg_remove_owned_csdev_configs(struct coresight_device *csdev, voi if (list_empty(&csdev->config_csdev_list)) return; + guard(raw_spinlock_irqsave)(&csdev->cscfg_csdev_lock); + list_for_each_entry_safe(config_csdev, tmp, &csdev->config_csdev_list, node) { if (config_csdev->config_desc->load_owner == load_owner) list_del(&config_csdev->node); -- cgit v1.2.3 From 408c97c4a5e0b634dcd15bf8b8808b382e888164 Mon Sep 17 00:00:00 2001 From: Yeoreum Yun Date: Wed, 14 May 2025 17:19:51 +0100 Subject: coresight: prevent deactivate active config while enabling the config While enable active config via cscfg_csdev_enable_active_config(), active config could be deactivated via configfs' sysfs interface. This could make UAF issue in below scenario: CPU0 CPU1 (sysfs enable) load module cscfg_load_config_sets() activate config. // sysfs (sys_active_cnt == 1) ... cscfg_csdev_enable_active_config() lock(csdev->cscfg_csdev_lock) // here load config activate by CPU1 unlock(csdev->cscfg_csdev_lock) deactivate config // sysfs (sys_activec_cnt == 0) cscfg_unload_config_sets() unload module // access to config_desc which freed // while unloading module. cscfg_csdev_enable_config To address this, use cscfg_config_desc's active_cnt as a reference count which will be holded when - activate the config. - enable the activated config. and put the module reference when config_active_cnt == 0. Fixes: f8cce2ff3c04 ("coresight: syscfg: Add API to activate and enable configurations") Suggested-by: Suzuki K Poulose Signed-off-by: Yeoreum Yun Reviewed-by: Leo Yan Signed-off-by: Suzuki K Poulose Link: https://lore.kernel.org/r/20250514161951.3427590-4-yeoreum.yun@arm.com --- drivers/hwtracing/coresight/coresight-config.h | 2 +- drivers/hwtracing/coresight/coresight-syscfg.c | 49 ++++++++++++++++++-------- 2 files changed, 35 insertions(+), 16 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-config.h b/drivers/hwtracing/coresight/coresight-config.h index b9ebc9fcfb7f..90fd937d3bd8 100644 --- a/drivers/hwtracing/coresight/coresight-config.h +++ b/drivers/hwtracing/coresight/coresight-config.h @@ -228,7 +228,7 @@ struct cscfg_feature_csdev { * @feats_csdev:references to the device features to enable. */ struct cscfg_config_csdev { - const struct cscfg_config_desc *config_desc; + struct cscfg_config_desc *config_desc; struct coresight_device *csdev; bool enabled; struct list_head node; diff --git a/drivers/hwtracing/coresight/coresight-syscfg.c b/drivers/hwtracing/coresight/coresight-syscfg.c index 23017612f2ea..83dad24e0116 100644 --- a/drivers/hwtracing/coresight/coresight-syscfg.c +++ b/drivers/hwtracing/coresight/coresight-syscfg.c @@ -869,6 +869,25 @@ unlock_exit: } EXPORT_SYMBOL_GPL(cscfg_csdev_reset_feats); +static bool cscfg_config_desc_get(struct cscfg_config_desc *config_desc) +{ + if (!atomic_fetch_inc(&config_desc->active_cnt)) { + /* must ensure that config cannot be unloaded in use */ + if (unlikely(cscfg_owner_get(config_desc->load_owner))) { + atomic_dec(&config_desc->active_cnt); + return false; + } + } + + return true; +} + +static void cscfg_config_desc_put(struct cscfg_config_desc *config_desc) +{ + if (!atomic_dec_return(&config_desc->active_cnt)) + cscfg_owner_put(config_desc->load_owner); +} + /* * This activate configuration for either perf or sysfs. Perf can have multiple * active configs, selected per event, sysfs is limited to one. @@ -892,22 +911,17 @@ static int _cscfg_activate_config(unsigned long cfg_hash) if (config_desc->available == false) return -EBUSY; - /* must ensure that config cannot be unloaded in use */ - err = cscfg_owner_get(config_desc->load_owner); - if (err) + if (!cscfg_config_desc_get(config_desc)) { + err = -EINVAL; break; + } + /* * increment the global active count - control changes to * active configurations */ atomic_inc(&cscfg_mgr->sys_active_cnt); - /* - * mark the descriptor as active so enable config on a - * device instance will use it - */ - atomic_inc(&config_desc->active_cnt); - err = 0; dev_dbg(cscfg_device(), "Activate config %s.\n", config_desc->name); break; @@ -922,9 +936,8 @@ static void _cscfg_deactivate_config(unsigned long cfg_hash) list_for_each_entry(config_desc, &cscfg_mgr->config_desc_list, item) { if ((unsigned long)config_desc->event_ea->var == cfg_hash) { - atomic_dec(&config_desc->active_cnt); atomic_dec(&cscfg_mgr->sys_active_cnt); - cscfg_owner_put(config_desc->load_owner); + cscfg_config_desc_put(config_desc); dev_dbg(cscfg_device(), "Deactivate config %s.\n", config_desc->name); break; } @@ -1049,7 +1062,7 @@ int cscfg_csdev_enable_active_config(struct coresight_device *csdev, unsigned long cfg_hash, int preset) { struct cscfg_config_csdev *config_csdev_active = NULL, *config_csdev_item; - const struct cscfg_config_desc *config_desc; + struct cscfg_config_desc *config_desc; unsigned long flags; int err = 0; @@ -1064,8 +1077,8 @@ int cscfg_csdev_enable_active_config(struct coresight_device *csdev, raw_spin_lock_irqsave(&csdev->cscfg_csdev_lock, flags); list_for_each_entry(config_csdev_item, &csdev->config_csdev_list, node) { config_desc = config_csdev_item->config_desc; - if ((atomic_read(&config_desc->active_cnt)) && - ((unsigned long)config_desc->event_ea->var == cfg_hash)) { + if (((unsigned long)config_desc->event_ea->var == cfg_hash) && + cscfg_config_desc_get(config_desc)) { config_csdev_active = config_csdev_item; csdev->active_cscfg_ctxt = (void *)config_csdev_active; break; @@ -1099,7 +1112,11 @@ int cscfg_csdev_enable_active_config(struct coresight_device *csdev, err = -EBUSY; raw_spin_unlock_irqrestore(&csdev->cscfg_csdev_lock, flags); } + + if (err) + cscfg_config_desc_put(config_desc); } + return err; } EXPORT_SYMBOL_GPL(cscfg_csdev_enable_active_config); @@ -1138,8 +1155,10 @@ void cscfg_csdev_disable_active_config(struct coresight_device *csdev) raw_spin_unlock_irqrestore(&csdev->cscfg_csdev_lock, flags); /* true if there was an enabled active config */ - if (config_csdev) + if (config_csdev) { cscfg_csdev_disable_config(config_csdev); + cscfg_config_desc_put(config_csdev->config_desc); + } } EXPORT_SYMBOL_GPL(cscfg_csdev_disable_active_config); -- cgit v1.2.3 From 81e9edc1a8d657291409d70d93361d8277d226d8 Mon Sep 17 00:00:00 2001 From: Christian Schrefl Date: Sat, 17 May 2025 13:06:15 +0200 Subject: rust: miscdevice: fix typo in MiscDevice::ioctl documentation Fixes one small typo (`utilties` to `utilities`) in the documentation of `MiscDevice::ioctl`. Fixes: f893691e7426 ("rust: miscdevice: add base miscdevice abstraction") Signed-off-by: Christian Schrefl Reviewed-by: Benno Lossin Reviewed-by: Alice Ryhl Link: https://lore.kernel.org/r/20250517-rust_miscdevice_fix_typo-v1-1-8c30a6237ba9@gmail.com Signed-off-by: Greg Kroah-Hartman --- rust/kernel/miscdevice.rs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/rust/kernel/miscdevice.rs b/rust/kernel/miscdevice.rs index fa9ecc42602a..15d10e5c1db7 100644 --- a/rust/kernel/miscdevice.rs +++ b/rust/kernel/miscdevice.rs @@ -121,7 +121,7 @@ pub trait MiscDevice: Sized { /// Handler for ioctls. /// - /// The `cmd` argument is usually manipulated using the utilties in [`kernel::ioctl`]. + /// The `cmd` argument is usually manipulated using the utilities in [`kernel::ioctl`]. /// /// [`kernel::ioctl`]: mod@crate::ioctl fn ioctl( -- cgit v1.2.3 From 3ab311289cf1cd579e914b775a4449c964057b2c Mon Sep 17 00:00:00 2001 From: "Gustavo A. R. Silva" Date: Tue, 13 May 2025 12:53:26 +0200 Subject: w1: Avoid -Wflex-array-member-not-at-end warnings -Wflex-array-member-not-at-end was introduced in GCC-14, and we are getting ready to enable it, globally. Use the `DEFINE_RAW_FLEX()` helper for on-stack definitions of a flexible structure where the size of the flexible-array member is known at compile-time, and refactor the rest of the code, accordingly. So, with these changes, fix the following warnings: drivers/w1/w1_netlink.c:198:31: warning: structure containing a flexible array member is not at the end of another structure [-Wflex-array-member-not-at-end] drivers/w1/w1_netlink.c:219:31: warning: structure containing a flexible array member is not at the end of another structure [-Wflex-array-member-not-at-end] Reviewed-by: Kees Cook Signed-off-by: "Gustavo A. R. Silva" Link: https://lore.kernel.org/r/Z_RflBe5iDGTMFjV@kspp Signed-off-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20250513105326.27385-2-krzysztof.kozlowski@linaro.org Signed-off-by: Greg Kroah-Hartman --- drivers/w1/w1_netlink.c | 42 ++++++++++++++++++++---------------------- 1 file changed, 20 insertions(+), 22 deletions(-) diff --git a/drivers/w1/w1_netlink.c b/drivers/w1/w1_netlink.c index 691978cddab7..e6b59d921076 100644 --- a/drivers/w1/w1_netlink.c +++ b/drivers/w1/w1_netlink.c @@ -194,16 +194,16 @@ static void w1_netlink_queue_status(struct w1_cb_block *block, static void w1_netlink_send_error(struct cn_msg *cn, struct w1_netlink_msg *msg, int portid, int error) { - struct { - struct cn_msg cn; - struct w1_netlink_msg msg; - } packet; - memcpy(&packet.cn, cn, sizeof(packet.cn)); - memcpy(&packet.msg, msg, sizeof(packet.msg)); - packet.cn.len = sizeof(packet.msg); - packet.msg.len = 0; - packet.msg.status = (u8)-error; - cn_netlink_send(&packet.cn, portid, 0, GFP_KERNEL); + DEFINE_RAW_FLEX(struct cn_msg, packet, data, + sizeof(struct w1_netlink_msg)); + struct w1_netlink_msg *pkt_msg = (struct w1_netlink_msg *)packet->data; + + *packet = *cn; + *pkt_msg = *msg; + packet->len = sizeof(*pkt_msg); + pkt_msg->len = 0; + pkt_msg->status = (u8)-error; + cn_netlink_send(packet, portid, 0, GFP_KERNEL); } /** @@ -215,22 +215,20 @@ static void w1_netlink_send_error(struct cn_msg *cn, struct w1_netlink_msg *msg, */ void w1_netlink_send(struct w1_master *dev, struct w1_netlink_msg *msg) { - struct { - struct cn_msg cn; - struct w1_netlink_msg msg; - } packet; - memset(&packet, 0, sizeof(packet)); + DEFINE_RAW_FLEX(struct cn_msg, packet, data, + sizeof(struct w1_netlink_msg)); + struct w1_netlink_msg *pkt_msg = (struct w1_netlink_msg *)packet->data; - packet.cn.id.idx = CN_W1_IDX; - packet.cn.id.val = CN_W1_VAL; + packet->id.idx = CN_W1_IDX; + packet->id.val = CN_W1_VAL; - packet.cn.seq = dev->seq++; - packet.cn.len = sizeof(*msg); + packet->seq = dev->seq++; + packet->len = sizeof(*msg); - memcpy(&packet.msg, msg, sizeof(*msg)); - packet.msg.len = 0; + *pkt_msg = *msg; + pkt_msg->len = 0; - cn_netlink_send(&packet.cn, 0, 0, GFP_KERNEL); + cn_netlink_send(packet, 0, 0, GFP_KERNEL); } static void w1_send_slave(struct w1_master *dev, u64 rn) -- cgit v1.2.3 From ff9102041208532e9f890ae8a9074da467beadab Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Thu, 1 May 2025 19:53:04 +0200 Subject: mux: MAINTAINERS: Mark as Odd Fixes Over last year, several patches for drivers/mux/ were not picked up, even after multiple pings or resends, so mark the mux subsystem as odd fixes to clarify actual status of lack of maintainers with dedicated time and indicate that someone could help here. Signed-off-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20250501175303.144102-2-krzysztof.kozlowski@linaro.org Signed-off-by: Greg Kroah-Hartman --- MAINTAINERS | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/MAINTAINERS b/MAINTAINERS index f14b24efdf90..164149a5e04b 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -16657,7 +16657,7 @@ F: include/uapi/linux/mmc/ MULTIPLEXER SUBSYSTEM M: Peter Rosin -S: Maintained +S: Odd Fixes F: Documentation/ABI/testing/sysfs-class-mux* F: Documentation/devicetree/bindings/mux/ F: drivers/mux/ -- cgit v1.2.3 From 7a93add1d31f14e0b7e937163904dee1e864a9a8 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Fri, 9 May 2025 13:24:06 +0100 Subject: nvmem: rmem: select CONFIG_CRC32 The newly added crc checking leads to a link failure if CRC32 itself is disabled: x86_64-linux-ld: vmlinux.o: in function `rmem_eyeq5_checksum': rmem.c:(.text+0x52341b): undefined reference to `crc32_le_arch' Fixes: 7e606c311f70 ("nvmem: rmem: add CRC validation for Mobileye EyeQ5 NVMEM") Cc: stable Signed-off-by: Arnd Bergmann Signed-off-by: Srinivas Kandagatla Link: https://lore.kernel.org/r/20250509122407.11763-2-srini@kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/nvmem/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/nvmem/Kconfig b/drivers/nvmem/Kconfig index 8671b7c974b9..eceb3cdb421f 100644 --- a/drivers/nvmem/Kconfig +++ b/drivers/nvmem/Kconfig @@ -260,6 +260,7 @@ config NVMEM_RCAR_EFUSE config NVMEM_RMEM tristate "Reserved Memory Based Driver Support" depends on HAS_IOMEM + select CRC32 help This driver maps reserved memory into an nvmem device. It might be useful to expose information left by firmware in memory. -- cgit v1.2.3 From fe8abdd175d7b547ae1a612757e7902bcd62e9cf Mon Sep 17 00:00:00 2001 From: Peter Korsgaard Date: Fri, 9 May 2025 13:24:07 +0100 Subject: nvmem: zynqmp_nvmem: unbreak driver after cleanup Commit 29be47fcd6a0 ("nvmem: zynqmp_nvmem: zynqmp_nvmem_probe cleanup") changed the driver to expect the device pointer to be passed as the "context", but in nvmem the context parameter comes from nvmem_config.priv which is never set - Leading to null pointer exceptions when the device is accessed. Fixes: 29be47fcd6a0 ("nvmem: zynqmp_nvmem: zynqmp_nvmem_probe cleanup") Cc: stable Signed-off-by: Peter Korsgaard Reviewed-by: Michal Simek Tested-by: Michal Simek Signed-off-by: Srinivas Kandagatla Link: https://lore.kernel.org/r/20250509122407.11763-3-srini@kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/nvmem/zynqmp_nvmem.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/nvmem/zynqmp_nvmem.c b/drivers/nvmem/zynqmp_nvmem.c index 8682adaacd69..7da717d6c7fa 100644 --- a/drivers/nvmem/zynqmp_nvmem.c +++ b/drivers/nvmem/zynqmp_nvmem.c @@ -213,6 +213,7 @@ static int zynqmp_nvmem_probe(struct platform_device *pdev) econfig.word_size = 1; econfig.size = ZYNQMP_NVMEM_SIZE; econfig.dev = dev; + econfig.priv = dev; econfig.add_legacy_fixed_of_cells = true; econfig.reg_read = zynqmp_nvmem_read; econfig.reg_write = zynqmp_nvmem_write; -- cgit v1.2.3 From 01465f296a6871222b185c350423978d44431c96 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Fri, 9 May 2025 13:24:50 +0100 Subject: nvmem: Remove unused nvmem cell table support Board files are deprecated by DT, and the last user of nvmem_add_cell_table() was removed by commit 2af4fcc0d3574482 ("ARM: davinci: remove unused board support") in v6.3. Hence remove all support for nvmem cell tables, and update the documentation. Device drivers can still register a single cell using nvmem_add_one_cell() (which was not documented before). Signed-off-by: Geert Uytterhoeven Acked-by: Arnd Bergmann Signed-off-by: Srinivas Kandagatla Link: https://lore.kernel.org/r/20250509122452.11827-2-srini@kernel.org Signed-off-by: Greg Kroah-Hartman --- Documentation/driver-api/nvmem.rst | 14 +++----- drivers/nvmem/core.c | 68 -------------------------------------- include/linux/nvmem-provider.h | 24 -------------- 3 files changed, 4 insertions(+), 102 deletions(-) diff --git a/Documentation/driver-api/nvmem.rst b/Documentation/driver-api/nvmem.rst index 5d9500d21ecc..790e2dc652c0 100644 --- a/Documentation/driver-api/nvmem.rst +++ b/Documentation/driver-api/nvmem.rst @@ -59,10 +59,10 @@ For example, a simple nvram case:: devm_nvmem_register(&config); } -Users of board files can define and register nvmem cells using the -nvmem_cell_table struct:: +Device drivers can define and register an nvmem cell using the nvmem_cell_info +struct:: - static struct nvmem_cell_info foo_nvmem_cells[] = { + static const struct nvmem_cell_info foo_nvmem_cell = { { .name = "macaddr", .offset = 0x7f00, @@ -70,13 +70,7 @@ nvmem_cell_table struct:: } }; - static struct nvmem_cell_table foo_nvmem_cell_table = { - .nvmem_name = "i2c-eeprom", - .cells = foo_nvmem_cells, - .ncells = ARRAY_SIZE(foo_nvmem_cells), - }; - - nvmem_add_cell_table(&foo_nvmem_cell_table); + int nvmem_add_one_cell(nvmem, &foo_nvmem_cell); Additionally it is possible to create nvmem cell lookup entries and register them with the nvmem framework from machine code as shown in the example below:: diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c index e206efc29a00..fd2a9698d1c9 100644 --- a/drivers/nvmem/core.c +++ b/drivers/nvmem/core.c @@ -47,9 +47,6 @@ struct nvmem_cell { static DEFINE_MUTEX(nvmem_mutex); static DEFINE_IDA(nvmem_ida); -static DEFINE_MUTEX(nvmem_cell_mutex); -static LIST_HEAD(nvmem_cell_tables); - static DEFINE_MUTEX(nvmem_lookup_mutex); static LIST_HEAD(nvmem_lookup_list); @@ -719,41 +716,6 @@ int nvmem_unregister_notifier(struct notifier_block *nb) } EXPORT_SYMBOL_GPL(nvmem_unregister_notifier); -static int nvmem_add_cells_from_table(struct nvmem_device *nvmem) -{ - const struct nvmem_cell_info *info; - struct nvmem_cell_table *table; - struct nvmem_cell_entry *cell; - int rval = 0, i; - - mutex_lock(&nvmem_cell_mutex); - list_for_each_entry(table, &nvmem_cell_tables, node) { - if (strcmp(nvmem_dev_name(nvmem), table->nvmem_name) == 0) { - for (i = 0; i < table->ncells; i++) { - info = &table->cells[i]; - - cell = kzalloc(sizeof(*cell), GFP_KERNEL); - if (!cell) { - rval = -ENOMEM; - goto out; - } - - rval = nvmem_cell_info_to_nvmem_cell_entry(nvmem, info, cell); - if (rval) { - kfree(cell); - goto out; - } - - nvmem_cell_entry_add(cell); - } - } - } - -out: - mutex_unlock(&nvmem_cell_mutex); - return rval; -} - static struct nvmem_cell_entry * nvmem_find_cell_entry_by_name(struct nvmem_device *nvmem, const char *cell_id) { @@ -1040,10 +1002,6 @@ struct nvmem_device *nvmem_register(const struct nvmem_config *config) goto err_remove_cells; } - rval = nvmem_add_cells_from_table(nvmem); - if (rval) - goto err_remove_cells; - if (config->add_legacy_fixed_of_cells) { rval = nvmem_add_cells_from_legacy_of(nvmem); if (rval) @@ -2151,32 +2109,6 @@ int nvmem_device_write(struct nvmem_device *nvmem, } EXPORT_SYMBOL_GPL(nvmem_device_write); -/** - * nvmem_add_cell_table() - register a table of cell info entries - * - * @table: table of cell info entries - */ -void nvmem_add_cell_table(struct nvmem_cell_table *table) -{ - mutex_lock(&nvmem_cell_mutex); - list_add_tail(&table->node, &nvmem_cell_tables); - mutex_unlock(&nvmem_cell_mutex); -} -EXPORT_SYMBOL_GPL(nvmem_add_cell_table); - -/** - * nvmem_del_cell_table() - remove a previously registered cell info table - * - * @table: table of cell info entries - */ -void nvmem_del_cell_table(struct nvmem_cell_table *table) -{ - mutex_lock(&nvmem_cell_mutex); - list_del(&table->node); - mutex_unlock(&nvmem_cell_mutex); -} -EXPORT_SYMBOL_GPL(nvmem_del_cell_table); - /** * nvmem_add_cell_lookups() - register a list of cell lookup entries * diff --git a/include/linux/nvmem-provider.h b/include/linux/nvmem-provider.h index 515676ebe598..615a560d9edb 100644 --- a/include/linux/nvmem-provider.h +++ b/include/linux/nvmem-provider.h @@ -137,25 +137,6 @@ struct nvmem_config { struct device *base_dev; }; -/** - * struct nvmem_cell_table - NVMEM cell definitions for given provider - * - * @nvmem_name: Provider name. - * @cells: Array of cell definitions. - * @ncells: Number of cell definitions in the array. - * @node: List node. - * - * This structure together with related helper functions is provided for users - * that don't can't access the nvmem provided structure but wish to register - * cell definitions for it e.g. board files registering an EEPROM device. - */ -struct nvmem_cell_table { - const char *nvmem_name; - const struct nvmem_cell_info *cells; - size_t ncells; - struct list_head node; -}; - /** * struct nvmem_layout - NVMEM layout definitions * @@ -190,9 +171,6 @@ void nvmem_unregister(struct nvmem_device *nvmem); struct nvmem_device *devm_nvmem_register(struct device *dev, const struct nvmem_config *cfg); -void nvmem_add_cell_table(struct nvmem_cell_table *table); -void nvmem_del_cell_table(struct nvmem_cell_table *table); - int nvmem_add_one_cell(struct nvmem_device *nvmem, const struct nvmem_cell_info *info); @@ -223,8 +201,6 @@ devm_nvmem_register(struct device *dev, const struct nvmem_config *c) return nvmem_register(c); } -static inline void nvmem_add_cell_table(struct nvmem_cell_table *table) {} -static inline void nvmem_del_cell_table(struct nvmem_cell_table *table) {} static inline int nvmem_add_one_cell(struct nvmem_device *nvmem, const struct nvmem_cell_info *info) { -- cgit v1.2.3 From 4833245492676ce96ff95761b0adead4ef4509de Mon Sep 17 00:00:00 2001 From: Sasha Finkelstein Date: Fri, 9 May 2025 13:24:51 +0100 Subject: dt-bindings: spmi: Add Apple SPMI NVMEM Add bindings for exposing SPMI registers of Apple PMICs as NVMEM cells Reviewed-by: Alyssa Rosenzweig Signed-off-by: Sasha Finkelstein Reviewed-by: "Rob Herring (Arm)" Reviewed-by: Neal Gompa Signed-off-by: Srinivas Kandagatla Link: https://lore.kernel.org/r/20250509122452.11827-3-srini@kernel.org Signed-off-by: Greg Kroah-Hartman --- .../bindings/nvmem/apple,spmi-nvmem.yaml | 54 ++++++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 55 insertions(+) create mode 100644 Documentation/devicetree/bindings/nvmem/apple,spmi-nvmem.yaml diff --git a/Documentation/devicetree/bindings/nvmem/apple,spmi-nvmem.yaml b/Documentation/devicetree/bindings/nvmem/apple,spmi-nvmem.yaml new file mode 100644 index 000000000000..80b5a6cdcec9 --- /dev/null +++ b/Documentation/devicetree/bindings/nvmem/apple,spmi-nvmem.yaml @@ -0,0 +1,54 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/nvmem/apple,spmi-nvmem.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Apple SPMI NVMEM + +description: Exports a series of SPMI registers as NVMEM cells + +maintainers: + - Sasha Finkelstein + +allOf: + - $ref: nvmem.yaml# + +properties: + compatible: + items: + - enum: + - apple,maverick-pmic + - apple,sera-pmic + - apple,stowe-pmic + - const: apple,spmi-nvmem + + reg: + maxItems: 1 + +required: + - compatible + - reg + +unevaluatedProperties: false + +examples: + - | + #include + + pmic@f { + compatible = "apple,maverick-pmic", "apple,spmi-nvmem"; + reg = <0xf SPMI_USID>; + + nvmem-layout { + compatible = "fixed-layout"; + #address-cells = <1>; + #size-cells = <1>; + + boot_stage: boot-stage@6001 { + reg = <0x6001 0x1>; + }; + }; + }; + +... diff --git a/MAINTAINERS b/MAINTAINERS index 164149a5e04b..e1eaabab20b4 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2277,6 +2277,7 @@ F: Documentation/devicetree/bindings/mailbox/apple,mailbox.yaml F: Documentation/devicetree/bindings/net/bluetooth/brcm,bcm4377-bluetooth.yaml F: Documentation/devicetree/bindings/nvme/apple,nvme-ans.yaml F: Documentation/devicetree/bindings/nvmem/apple,efuses.yaml +F: Documentation/devicetree/bindings/nvmem/apple,spmi-nvmem.yaml F: Documentation/devicetree/bindings/pci/apple,pcie.yaml F: Documentation/devicetree/bindings/pinctrl/apple,pinctrl.yaml F: Documentation/devicetree/bindings/power/apple* -- cgit v1.2.3 From fe91c24a551c6f120f372faa5193d616a9f0b15a Mon Sep 17 00:00:00 2001 From: Hector Martin Date: Fri, 9 May 2025 13:24:52 +0100 Subject: nvmem: Add apple-spmi-nvmem driver Add a driver for a series of SPMI-attached PMICs present on Apple devices Reviewed-by: Neal Gompa Reviewed-by: Alyssa Rosenzweig Signed-off-by: Hector Martin Co-developed-by: Sasha Finkelstein Signed-off-by: Sasha Finkelstein Signed-off-by: Srinivas Kandagatla Link: https://lore.kernel.org/r/20250509122452.11827-4-srini@kernel.org Signed-off-by: Greg Kroah-Hartman --- MAINTAINERS | 1 + drivers/nvmem/Kconfig | 13 +++++++++ drivers/nvmem/Makefile | 2 ++ drivers/nvmem/apple-spmi-nvmem.c | 62 ++++++++++++++++++++++++++++++++++++++++ 4 files changed, 78 insertions(+) create mode 100644 drivers/nvmem/apple-spmi-nvmem.c diff --git a/MAINTAINERS b/MAINTAINERS index e1eaabab20b4..b5995660c219 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2298,6 +2298,7 @@ F: drivers/iommu/io-pgtable-dart.c F: drivers/irqchip/irq-apple-aic.c F: drivers/nvme/host/apple.c F: drivers/nvmem/apple-efuses.c +F: drivers/nvmem/apple-spmi-nvmem.c F: drivers/pinctrl/pinctrl-apple-gpio.c F: drivers/pwm/pwm-apple.c F: drivers/soc/apple/* diff --git a/drivers/nvmem/Kconfig b/drivers/nvmem/Kconfig index eceb3cdb421f..114140c89906 100644 --- a/drivers/nvmem/Kconfig +++ b/drivers/nvmem/Kconfig @@ -40,6 +40,19 @@ config NVMEM_APPLE_EFUSES This driver can also be built as a module. If so, the module will be called nvmem-apple-efuses. +config NVMEM_APPLE_SPMI + tristate "Apple SPMI NVMEM" + depends on ARCH_APPLE || COMPILE_TEST + depends on SPMI + select REGMAP_SPMI + help + Say y here to build a driver to expose NVMEM cells for a set of power + and RTC-related settings on a SPMI-attached PMIC present on Apple + devices, such as Apple Silicon Macs. + + This driver can also be built as a module. If so, the module + will be called apple-nvmem-spmi. + config NVMEM_BCM_OCOTP tristate "Broadcom On-Chip OTP Controller support" depends on ARCH_BCM_IPROC || COMPILE_TEST diff --git a/drivers/nvmem/Makefile b/drivers/nvmem/Makefile index 5b77bbb6488b..89a3c252c2c8 100644 --- a/drivers/nvmem/Makefile +++ b/drivers/nvmem/Makefile @@ -12,6 +12,8 @@ obj-y += layouts/ # Devices obj-$(CONFIG_NVMEM_APPLE_EFUSES) += nvmem-apple-efuses.o nvmem-apple-efuses-y := apple-efuses.o +obj-$(CONFIG_NVMEM_APPLE_SPMI) += apple_nvmem_spmi.o +apple_nvmem_spmi-y := apple-spmi-nvmem.o obj-$(CONFIG_NVMEM_BCM_OCOTP) += nvmem-bcm-ocotp.o nvmem-bcm-ocotp-y := bcm-ocotp.o obj-$(CONFIG_NVMEM_BRCM_NVRAM) += nvmem_brcm_nvram.o diff --git a/drivers/nvmem/apple-spmi-nvmem.c b/drivers/nvmem/apple-spmi-nvmem.c new file mode 100644 index 000000000000..88614005d5ce --- /dev/null +++ b/drivers/nvmem/apple-spmi-nvmem.c @@ -0,0 +1,62 @@ +// SPDX-License-Identifier: GPL-2.0-only OR MIT +/* + * Apple SPMI NVMEM driver + * + * Copyright The Asahi Linux Contributors + */ + +#include +#include +#include +#include +#include +#include + +static const struct regmap_config apple_spmi_regmap_config = { + .reg_bits = 16, + .val_bits = 8, + .max_register = 0xffff, +}; + +static int apple_spmi_nvmem_probe(struct spmi_device *sdev) +{ + struct regmap *regmap; + struct nvmem_config nvmem_cfg = { + .dev = &sdev->dev, + .name = "spmi_nvmem", + .id = NVMEM_DEVID_AUTO, + .word_size = 1, + .stride = 1, + .size = 0xffff, + .reg_read = (void *)regmap_bulk_read, + .reg_write = (void *)regmap_bulk_write, + }; + + regmap = devm_regmap_init_spmi_ext(sdev, &apple_spmi_regmap_config); + if (IS_ERR(regmap)) + return PTR_ERR(regmap); + + nvmem_cfg.priv = regmap; + + return PTR_ERR_OR_ZERO(devm_nvmem_register(&sdev->dev, &nvmem_cfg)); +} + +static const struct of_device_id apple_spmi_nvmem_id_table[] = { + { .compatible = "apple,spmi-nvmem" }, + { }, +}; +MODULE_DEVICE_TABLE(of, apple_spmi_nvmem_id_table); + +static struct spmi_driver apple_spmi_nvmem_driver = { + .probe = apple_spmi_nvmem_probe, + .driver = { + .name = "apple-spmi-nvmem", + .of_match_table = apple_spmi_nvmem_id_table, + }, +}; + +module_spmi_driver(apple_spmi_nvmem_driver); + +MODULE_LICENSE("Dual MIT/GPL"); +MODULE_AUTHOR("Hector Martin "); +MODULE_DESCRIPTION("Apple SPMI NVMEM driver"); -- cgit v1.2.3 From 8c0a559825281764061a127632e5ad273f0466ad Mon Sep 17 00:00:00 2001 From: Dmitry Antipov Date: Sat, 17 May 2025 17:09:56 +0000 Subject: binder: fix use-after-free in binderfs_evict_inode() Running 'stress-ng --binderfs 16 --timeout 300' under KASAN-enabled kernel, I've noticed the following: BUG: KASAN: slab-use-after-free in binderfs_evict_inode+0x1de/0x2d0 Write of size 8 at addr ffff88807379bc08 by task stress-ng-binde/1699 CPU: 0 UID: 0 PID: 1699 Comm: stress-ng-binde Not tainted 6.14.0-rc7-g586de92313fc-dirty #13 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-3.fc41 04/01/2014 Call Trace: dump_stack_lvl+0x1c2/0x2a0 ? __pfx_dump_stack_lvl+0x10/0x10 ? __pfx__printk+0x10/0x10 ? __pfx_lock_release+0x10/0x10 ? __virt_addr_valid+0x18c/0x540 ? __virt_addr_valid+0x469/0x540 print_report+0x155/0x840 ? __virt_addr_valid+0x18c/0x540 ? __virt_addr_valid+0x469/0x540 ? __phys_addr+0xba/0x170 ? binderfs_evict_inode+0x1de/0x2d0 kasan_report+0x147/0x180 ? binderfs_evict_inode+0x1de/0x2d0 binderfs_evict_inode+0x1de/0x2d0 ? __pfx_binderfs_evict_inode+0x10/0x10 evict+0x524/0x9f0 ? __pfx_lock_release+0x10/0x10 ? __pfx_evict+0x10/0x10 ? do_raw_spin_unlock+0x4d/0x210 ? _raw_spin_unlock+0x28/0x50 ? iput+0x697/0x9b0 __dentry_kill+0x209/0x660 ? shrink_kill+0x8d/0x2c0 shrink_kill+0xa9/0x2c0 shrink_dentry_list+0x2e0/0x5e0 shrink_dcache_parent+0xa2/0x2c0 ? __pfx_shrink_dcache_parent+0x10/0x10 ? __pfx_lock_release+0x10/0x10 ? __pfx_do_raw_spin_lock+0x10/0x10 do_one_tree+0x23/0xe0 shrink_dcache_for_umount+0xa0/0x170 generic_shutdown_super+0x67/0x390 kill_litter_super+0x76/0xb0 binderfs_kill_super+0x44/0x90 deactivate_locked_super+0xb9/0x130 cleanup_mnt+0x422/0x4c0 ? lockdep_hardirqs_on+0x9d/0x150 task_work_run+0x1d2/0x260 ? __pfx_task_work_run+0x10/0x10 resume_user_mode_work+0x52/0x60 syscall_exit_to_user_mode+0x9a/0x120 do_syscall_64+0x103/0x210 ? asm_sysvec_apic_timer_interrupt+0x1a/0x20 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0xcac57b Code: c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 f3 0f 1e fa 31 f6 e9 05 00 00 00 0f 1f 44 00 00 f3 0f 1e fa b8 RSP: 002b:00007ffecf4226a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 00007ffecf422720 RCX: 0000000000cac57b RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007ffecf422850 RBP: 00007ffecf422850 R08: 0000000028d06ab1 R09: 7fffffffffffffff R10: 3fffffffffffffff R11: 0000000000000246 R12: 00007ffecf422718 R13: 00007ffecf422710 R14: 00007f478f87b658 R15: 00007ffecf422830 Allocated by task 1705: kasan_save_track+0x3e/0x80 __kasan_kmalloc+0x8f/0xa0 __kmalloc_cache_noprof+0x213/0x3e0 binderfs_binder_device_create+0x183/0xa80 binder_ctl_ioctl+0x138/0x190 __x64_sys_ioctl+0x120/0x1b0 do_syscall_64+0xf6/0x210 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 1705: kasan_save_track+0x3e/0x80 kasan_save_free_info+0x46/0x50 __kasan_slab_free+0x62/0x70 kfree+0x194/0x440 evict+0x524/0x9f0 do_unlinkat+0x390/0x5b0 __x64_sys_unlink+0x47/0x50 do_syscall_64+0xf6/0x210 entry_SYSCALL_64_after_hwframe+0x77/0x7f This 'stress-ng' workload causes the concurrent deletions from 'binder_devices' and so requires full-featured synchronization to prevent list corruption. I've found this issue independently but pretty sure that syzbot did the same, so Reported-by: and Closes: should be applicable here as well. Cc: stable@vger.kernel.org Reported-by: syzbot+353d7b75658a95aa955a@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=353d7b75658a95aa955a Fixes: e77aff5528a18 ("binderfs: fix use-after-free in binder_devices") Signed-off-by: Dmitry Antipov Acked-by: Carlos Llamas Signed-off-by: Carlos Llamas Reviewed-by: Alice Ryhl Link: https://lore.kernel.org/r/20250517170957.1317876-1-cmllamas@google.com Signed-off-by: Greg Kroah-Hartman --- drivers/android/binder.c | 15 +++++++++++++-- drivers/android/binder_internal.h | 8 ++++++-- drivers/android/binderfs.c | 2 +- 3 files changed, 20 insertions(+), 5 deletions(-) diff --git a/drivers/android/binder.c b/drivers/android/binder.c index 91adf18675a1..65af4b169388 100644 --- a/drivers/android/binder.c +++ b/drivers/android/binder.c @@ -79,6 +79,8 @@ static HLIST_HEAD(binder_deferred_list); static DEFINE_MUTEX(binder_deferred_lock); static HLIST_HEAD(binder_devices); +static DEFINE_SPINLOCK(binder_devices_lock); + static HLIST_HEAD(binder_procs); static DEFINE_MUTEX(binder_procs_lock); @@ -6924,7 +6926,16 @@ const struct binder_debugfs_entry binder_debugfs_entries[] = { void binder_add_device(struct binder_device *device) { + spin_lock(&binder_devices_lock); hlist_add_head(&device->hlist, &binder_devices); + spin_unlock(&binder_devices_lock); +} + +void binder_remove_device(struct binder_device *device) +{ + spin_lock(&binder_devices_lock); + hlist_del_init(&device->hlist); + spin_unlock(&binder_devices_lock); } static int __init init_binder_device(const char *name) @@ -6951,7 +6962,7 @@ static int __init init_binder_device(const char *name) return ret; } - hlist_add_head(&binder_device->hlist, &binder_devices); + binder_add_device(binder_device); return ret; } @@ -7013,7 +7024,7 @@ static int __init binder_init(void) err_init_binder_device_failed: hlist_for_each_entry_safe(device, tmp, &binder_devices, hlist) { misc_deregister(&device->miscdev); - hlist_del(&device->hlist); + binder_remove_device(device); kfree(device); } diff --git a/drivers/android/binder_internal.h b/drivers/android/binder_internal.h index 6a66c9769c6c..1ba5caf1d88d 100644 --- a/drivers/android/binder_internal.h +++ b/drivers/android/binder_internal.h @@ -583,9 +583,13 @@ struct binder_object { /** * Add a binder device to binder_devices * @device: the new binder device to add to the global list - * - * Not reentrant as the list is not protected by any locks */ void binder_add_device(struct binder_device *device); +/** + * Remove a binder device to binder_devices + * @device: the binder device to remove from the global list + */ +void binder_remove_device(struct binder_device *device); + #endif /* _LINUX_BINDER_INTERNAL_H */ diff --git a/drivers/android/binderfs.c b/drivers/android/binderfs.c index 94c6446604fc..44d430c4ebef 100644 --- a/drivers/android/binderfs.c +++ b/drivers/android/binderfs.c @@ -274,7 +274,7 @@ static void binderfs_evict_inode(struct inode *inode) mutex_unlock(&binderfs_minors_mutex); if (refcount_dec_and_test(&device->ref)) { - hlist_del_init(&device->hlist); + binder_remove_device(device); kfree(device->context.name); kfree(device); } -- cgit v1.2.3 From 91f1bbaa783d26b379d65ef7b4b2b947c338c749 Mon Sep 17 00:00:00 2001 From: "Tiffany Y. Yang" Date: Sat, 10 May 2025 01:34:38 +0000 Subject: binder: Refactor binder_node print synchronization The binder driver outputs information about each dead binder node by iterating over the dead nodes list, and it prints the state of each live node in the system by traversing each binder_proc's proc->nodes tree. Both cases require similar logic to maintain the global lock ordering while accessing each node. Create a helper function to synchronize around printing binder nodes in a list. Opportunistically make minor cosmetic changes to binder print functions. Acked-by: Carlos Llamas Signed-off-by: "Tiffany Y. Yang" Reviewed-by: Alice Ryhl Link: https://lore.kernel.org/r/20250510013435.1520671-5-ynaffit@google.com Signed-off-by: Greg Kroah-Hartman --- drivers/android/binder.c | 119 +++++++++++++++++++++++++++-------------------- 1 file changed, 68 insertions(+), 51 deletions(-) diff --git a/drivers/android/binder.c b/drivers/android/binder.c index 65af4b169388..b542d14aae1f 100644 --- a/drivers/android/binder.c +++ b/drivers/android/binder.c @@ -6374,10 +6374,10 @@ static void print_binder_transaction_ilocked(struct seq_file *m, } static void print_binder_work_ilocked(struct seq_file *m, - struct binder_proc *proc, - const char *prefix, - const char *transaction_prefix, - struct binder_work *w) + struct binder_proc *proc, + const char *prefix, + const char *transaction_prefix, + struct binder_work *w) { struct binder_node *node; struct binder_transaction *t; @@ -6427,7 +6427,7 @@ static void print_binder_work_ilocked(struct seq_file *m, static void print_binder_thread_ilocked(struct seq_file *m, struct binder_thread *thread, - int print_always) + bool print_always) { struct binder_transaction *t; struct binder_work *w; @@ -6502,8 +6502,53 @@ static void print_binder_ref_olocked(struct seq_file *m, binder_node_unlock(ref->node); } -static void print_binder_proc(struct seq_file *m, - struct binder_proc *proc, int print_all) +/** + * print_next_binder_node_ilocked() - Print binder_node from a locked list + * @m: struct seq_file for output via seq_printf() + * @proc: struct binder_proc we hold the inner_proc_lock to (if any) + * @node: struct binder_node to print fields of + * @prev_node: struct binder_node we hold a temporary reference to (if any) + * + * Helper function to handle synchronization around printing a struct + * binder_node while iterating through @proc->nodes or the dead nodes list. + * Caller must hold either @proc->inner_lock (for live nodes) or + * binder_dead_nodes_lock. This lock will be released during the body of this + * function, but it will be reacquired before returning to the caller. + * + * Return: pointer to the struct binder_node we hold a tmpref on + */ +static struct binder_node * +print_next_binder_node_ilocked(struct seq_file *m, struct binder_proc *proc, + struct binder_node *node, + struct binder_node *prev_node) +{ + /* + * Take a temporary reference on the node so that isn't freed while + * we print it. + */ + binder_inc_node_tmpref_ilocked(node); + /* + * Live nodes need to drop the inner proc lock and dead nodes need to + * drop the binder_dead_nodes_lock before trying to take the node lock. + */ + if (proc) + binder_inner_proc_unlock(proc); + else + spin_unlock(&binder_dead_nodes_lock); + if (prev_node) + binder_put_node(prev_node); + binder_node_inner_lock(node); + print_binder_node_nilocked(m, node); + binder_node_inner_unlock(node); + if (proc) + binder_inner_proc_lock(proc); + else + spin_lock(&binder_dead_nodes_lock); + return node; +} + +static void print_binder_proc(struct seq_file *m, struct binder_proc *proc, + bool print_all) { struct binder_work *w; struct rb_node *n; @@ -6516,31 +6561,18 @@ static void print_binder_proc(struct seq_file *m, header_pos = m->count; binder_inner_proc_lock(proc); - for (n = rb_first(&proc->threads); n != NULL; n = rb_next(n)) + for (n = rb_first(&proc->threads); n; n = rb_next(n)) print_binder_thread_ilocked(m, rb_entry(n, struct binder_thread, rb_node), print_all); - for (n = rb_first(&proc->nodes); n != NULL; n = rb_next(n)) { + for (n = rb_first(&proc->nodes); n; n = rb_next(n)) { struct binder_node *node = rb_entry(n, struct binder_node, rb_node); if (!print_all && !node->has_async_transaction) continue; - /* - * take a temporary reference on the node so it - * survives and isn't removed from the tree - * while we print it. - */ - binder_inc_node_tmpref_ilocked(node); - /* Need to drop inner lock to take node lock */ - binder_inner_proc_unlock(proc); - if (last_node) - binder_put_node(last_node); - binder_node_inner_lock(node); - print_binder_node_nilocked(m, node); - binder_node_inner_unlock(node); - last_node = node; - binder_inner_proc_lock(proc); + last_node = print_next_binder_node_ilocked(m, proc, node, + last_node); } binder_inner_proc_unlock(proc); if (last_node) @@ -6548,12 +6580,10 @@ static void print_binder_proc(struct seq_file *m, if (print_all) { binder_proc_lock(proc); - for (n = rb_first(&proc->refs_by_desc); - n != NULL; - n = rb_next(n)) + for (n = rb_first(&proc->refs_by_desc); n; n = rb_next(n)) print_binder_ref_olocked(m, rb_entry(n, - struct binder_ref, - rb_node_desc)); + struct binder_ref, + rb_node_desc)); binder_proc_unlock(proc); } binder_alloc_print_allocated(m, &proc->alloc); @@ -6693,7 +6723,7 @@ static void print_binder_proc_stats(struct seq_file *m, count = 0; ready_threads = 0; binder_inner_proc_lock(proc); - for (n = rb_first(&proc->threads); n != NULL; n = rb_next(n)) + for (n = rb_first(&proc->threads); n; n = rb_next(n)) count++; list_for_each_entry(thread, &proc->waiting_threads, waiting_thread_node) @@ -6707,7 +6737,7 @@ static void print_binder_proc_stats(struct seq_file *m, ready_threads, free_async_space); count = 0; - for (n = rb_first(&proc->nodes); n != NULL; n = rb_next(n)) + for (n = rb_first(&proc->nodes); n; n = rb_next(n)) count++; binder_inner_proc_unlock(proc); seq_printf(m, " nodes: %d\n", count); @@ -6715,7 +6745,7 @@ static void print_binder_proc_stats(struct seq_file *m, strong = 0; weak = 0; binder_proc_lock(proc); - for (n = rb_first(&proc->refs_by_desc); n != NULL; n = rb_next(n)) { + for (n = rb_first(&proc->refs_by_desc); n; n = rb_next(n)) { struct binder_ref *ref = rb_entry(n, struct binder_ref, rb_node_desc); count++; @@ -6753,29 +6783,16 @@ static int state_show(struct seq_file *m, void *unused) spin_lock(&binder_dead_nodes_lock); if (!hlist_empty(&binder_dead_nodes)) seq_puts(m, "dead nodes:\n"); - hlist_for_each_entry(node, &binder_dead_nodes, dead_node) { - /* - * take a temporary reference on the node so it - * survives and isn't removed from the list - * while we print it. - */ - node->tmp_refs++; - spin_unlock(&binder_dead_nodes_lock); - if (last_node) - binder_put_node(last_node); - binder_node_lock(node); - print_binder_node_nilocked(m, node); - binder_node_unlock(node); - last_node = node; - spin_lock(&binder_dead_nodes_lock); - } + hlist_for_each_entry(node, &binder_dead_nodes, dead_node) + last_node = print_next_binder_node_ilocked(m, NULL, node, + last_node); spin_unlock(&binder_dead_nodes_lock); if (last_node) binder_put_node(last_node); mutex_lock(&binder_procs_lock); hlist_for_each_entry(proc, &binder_procs, proc_node) - print_binder_proc(m, proc, 1); + print_binder_proc(m, proc, true); mutex_unlock(&binder_procs_lock); return 0; @@ -6804,7 +6821,7 @@ static int transactions_show(struct seq_file *m, void *unused) seq_puts(m, "binder transactions:\n"); mutex_lock(&binder_procs_lock); hlist_for_each_entry(proc, &binder_procs, proc_node) - print_binder_proc(m, proc, 0); + print_binder_proc(m, proc, false); mutex_unlock(&binder_procs_lock); return 0; @@ -6819,7 +6836,7 @@ static int proc_show(struct seq_file *m, void *unused) hlist_for_each_entry(itr, &binder_procs, proc_node) { if (itr->pid == pid) { seq_puts(m, "binder proc state:\n"); - print_binder_proc(m, itr, 1); + print_binder_proc(m, itr, true); } } mutex_unlock(&binder_procs_lock); -- cgit v1.2.3 From 57483a362741e4f0f3f4d2fc82d48f82fd0986d9 Mon Sep 17 00:00:00 2001 From: "Tiffany Y. Yang" Date: Sat, 10 May 2025 01:34:40 +0000 Subject: binder: Create safe versions of binder log files Binder defines several seq_files that can be accessed via debugfs or binderfs. Some of these files (e.g., 'state' and 'transactions') contain more granular information about binder's internal state that is helpful for debugging, but they also leak userspace address data through user-defined 'cookie' or 'ptr' values. Consequently, access to these files must be heavily restricted. Add two new files, 'state_hashed' and 'transactions_hashed', that reproduce the information in the original files but use the kernel's raw pointer obfuscation to hash any potential user addresses. This approach allows systems to grant broader access to the new files without having to change the security policy around the existing ones. In practice, userspace populates these fields with user addresses, but within the driver, these values only serve as unique identifiers for their associated binder objects. Consequently, binder logs can obfuscate these values and still retain meaning. While this strategy prevents leaking information about the userspace memory layout in the existing log files, it also decouples log messages about binder objects from their user-defined identifiers. Acked-by: Carlos Llamas Tested-by: Carlos Llamas Signed-off-by: "Tiffany Y. Yang" Link: https://lore.kernel.org/r/20250510013435.1520671-7-ynaffit@google.com Signed-off-by: Greg Kroah-Hartman --- drivers/android/binder.c | 106 +++++++++++++++++++++++++++++++++++------------ 1 file changed, 79 insertions(+), 27 deletions(-) diff --git a/drivers/android/binder.c b/drivers/android/binder.c index b542d14aae1f..682bbe4ad550 100644 --- a/drivers/android/binder.c +++ b/drivers/android/binder.c @@ -6377,7 +6377,7 @@ static void print_binder_work_ilocked(struct seq_file *m, struct binder_proc *proc, const char *prefix, const char *transaction_prefix, - struct binder_work *w) + struct binder_work *w, bool hash_ptrs) { struct binder_node *node; struct binder_transaction *t; @@ -6400,9 +6400,15 @@ static void print_binder_work_ilocked(struct seq_file *m, break; case BINDER_WORK_NODE: node = container_of(w, struct binder_node, work); - seq_printf(m, "%snode work %d: u%016llx c%016llx\n", - prefix, node->debug_id, - (u64)node->ptr, (u64)node->cookie); + if (hash_ptrs) + seq_printf(m, "%snode work %d: u%p c%p\n", + prefix, node->debug_id, + (void *)(long)node->ptr, + (void *)(long)node->cookie); + else + seq_printf(m, "%snode work %d: u%016llx c%016llx\n", + prefix, node->debug_id, + (u64)node->ptr, (u64)node->cookie); break; case BINDER_WORK_DEAD_BINDER: seq_printf(m, "%shas dead binder\n", prefix); @@ -6427,7 +6433,7 @@ static void print_binder_work_ilocked(struct seq_file *m, static void print_binder_thread_ilocked(struct seq_file *m, struct binder_thread *thread, - bool print_always) + bool print_always, bool hash_ptrs) { struct binder_transaction *t; struct binder_work *w; @@ -6457,14 +6463,16 @@ static void print_binder_thread_ilocked(struct seq_file *m, } list_for_each_entry(w, &thread->todo, entry) { print_binder_work_ilocked(m, thread->proc, " ", - " pending transaction", w); + " pending transaction", + w, hash_ptrs); } if (!print_always && m->count == header_pos) m->count = start_pos; } static void print_binder_node_nilocked(struct seq_file *m, - struct binder_node *node) + struct binder_node *node, + bool hash_ptrs) { struct binder_ref *ref; struct binder_work *w; @@ -6472,8 +6480,13 @@ static void print_binder_node_nilocked(struct seq_file *m, count = hlist_count_nodes(&node->refs); - seq_printf(m, " node %d: u%016llx c%016llx hs %d hw %d ls %d lw %d is %d iw %d tr %d", - node->debug_id, (u64)node->ptr, (u64)node->cookie, + if (hash_ptrs) + seq_printf(m, " node %d: u%p c%p", node->debug_id, + (void *)(long)node->ptr, (void *)(long)node->cookie); + else + seq_printf(m, " node %d: u%016llx c%016llx", node->debug_id, + (u64)node->ptr, (u64)node->cookie); + seq_printf(m, " hs %d hw %d ls %d lw %d is %d iw %d tr %d", node->has_strong_ref, node->has_weak_ref, node->local_strong_refs, node->local_weak_refs, node->internal_strong_refs, count, node->tmp_refs); @@ -6486,7 +6499,8 @@ static void print_binder_node_nilocked(struct seq_file *m, if (node->proc) { list_for_each_entry(w, &node->async_todo, entry) print_binder_work_ilocked(m, node->proc, " ", - " pending async transaction", w); + " pending async transaction", + w, hash_ptrs); } } @@ -6508,6 +6522,7 @@ static void print_binder_ref_olocked(struct seq_file *m, * @proc: struct binder_proc we hold the inner_proc_lock to (if any) * @node: struct binder_node to print fields of * @prev_node: struct binder_node we hold a temporary reference to (if any) + * @hash_ptrs: whether to hash @node's binder_uintptr_t fields * * Helper function to handle synchronization around printing a struct * binder_node while iterating through @proc->nodes or the dead nodes list. @@ -6520,7 +6535,7 @@ static void print_binder_ref_olocked(struct seq_file *m, static struct binder_node * print_next_binder_node_ilocked(struct seq_file *m, struct binder_proc *proc, struct binder_node *node, - struct binder_node *prev_node) + struct binder_node *prev_node, bool hash_ptrs) { /* * Take a temporary reference on the node so that isn't freed while @@ -6538,7 +6553,7 @@ print_next_binder_node_ilocked(struct seq_file *m, struct binder_proc *proc, if (prev_node) binder_put_node(prev_node); binder_node_inner_lock(node); - print_binder_node_nilocked(m, node); + print_binder_node_nilocked(m, node, hash_ptrs); binder_node_inner_unlock(node); if (proc) binder_inner_proc_lock(proc); @@ -6548,7 +6563,7 @@ print_next_binder_node_ilocked(struct seq_file *m, struct binder_proc *proc, } static void print_binder_proc(struct seq_file *m, struct binder_proc *proc, - bool print_all) + bool print_all, bool hash_ptrs) { struct binder_work *w; struct rb_node *n; @@ -6563,7 +6578,7 @@ static void print_binder_proc(struct seq_file *m, struct binder_proc *proc, binder_inner_proc_lock(proc); for (n = rb_first(&proc->threads); n; n = rb_next(n)) print_binder_thread_ilocked(m, rb_entry(n, struct binder_thread, - rb_node), print_all); + rb_node), print_all, hash_ptrs); for (n = rb_first(&proc->nodes); n; n = rb_next(n)) { struct binder_node *node = rb_entry(n, struct binder_node, @@ -6572,7 +6587,8 @@ static void print_binder_proc(struct seq_file *m, struct binder_proc *proc, continue; last_node = print_next_binder_node_ilocked(m, proc, node, - last_node); + last_node, + hash_ptrs); } binder_inner_proc_unlock(proc); if (last_node) @@ -6590,7 +6606,8 @@ static void print_binder_proc(struct seq_file *m, struct binder_proc *proc, binder_inner_proc_lock(proc); list_for_each_entry(w, &proc->todo, entry) print_binder_work_ilocked(m, proc, " ", - " pending transaction", w); + " pending transaction", w, + hash_ptrs); list_for_each_entry(w, &proc->delivered_death, entry) { seq_puts(m, " has delivered dead binder\n"); break; @@ -6772,7 +6789,7 @@ static void print_binder_proc_stats(struct seq_file *m, print_binder_stats(m, " ", &proc->stats); } -static int state_show(struct seq_file *m, void *unused) +static void print_binder_state(struct seq_file *m, bool hash_ptrs) { struct binder_proc *proc; struct binder_node *node; @@ -6785,16 +6802,38 @@ static int state_show(struct seq_file *m, void *unused) seq_puts(m, "dead nodes:\n"); hlist_for_each_entry(node, &binder_dead_nodes, dead_node) last_node = print_next_binder_node_ilocked(m, NULL, node, - last_node); + last_node, + hash_ptrs); spin_unlock(&binder_dead_nodes_lock); if (last_node) binder_put_node(last_node); mutex_lock(&binder_procs_lock); hlist_for_each_entry(proc, &binder_procs, proc_node) - print_binder_proc(m, proc, true); + print_binder_proc(m, proc, true, hash_ptrs); mutex_unlock(&binder_procs_lock); +} + +static void print_binder_transactions(struct seq_file *m, bool hash_ptrs) +{ + struct binder_proc *proc; + + seq_puts(m, "binder transactions:\n"); + mutex_lock(&binder_procs_lock); + hlist_for_each_entry(proc, &binder_procs, proc_node) + print_binder_proc(m, proc, false, hash_ptrs); + mutex_unlock(&binder_procs_lock); +} + +static int state_show(struct seq_file *m, void *unused) +{ + print_binder_state(m, false); + return 0; +} +static int state_hashed_show(struct seq_file *m, void *unused) +{ + print_binder_state(m, true); return 0; } @@ -6816,14 +6855,13 @@ static int stats_show(struct seq_file *m, void *unused) static int transactions_show(struct seq_file *m, void *unused) { - struct binder_proc *proc; - - seq_puts(m, "binder transactions:\n"); - mutex_lock(&binder_procs_lock); - hlist_for_each_entry(proc, &binder_procs, proc_node) - print_binder_proc(m, proc, false); - mutex_unlock(&binder_procs_lock); + print_binder_transactions(m, false); + return 0; +} +static int transactions_hashed_show(struct seq_file *m, void *unused) +{ + print_binder_transactions(m, true); return 0; } @@ -6836,7 +6874,7 @@ static int proc_show(struct seq_file *m, void *unused) hlist_for_each_entry(itr, &binder_procs, proc_node) { if (itr->pid == pid) { seq_puts(m, "binder proc state:\n"); - print_binder_proc(m, itr, true); + print_binder_proc(m, itr, true, false); } } mutex_unlock(&binder_procs_lock); @@ -6903,8 +6941,10 @@ const struct file_operations binder_fops = { }; DEFINE_SHOW_ATTRIBUTE(state); +DEFINE_SHOW_ATTRIBUTE(state_hashed); DEFINE_SHOW_ATTRIBUTE(stats); DEFINE_SHOW_ATTRIBUTE(transactions); +DEFINE_SHOW_ATTRIBUTE(transactions_hashed); DEFINE_SHOW_ATTRIBUTE(transaction_log); const struct binder_debugfs_entry binder_debugfs_entries[] = { @@ -6914,6 +6954,12 @@ const struct binder_debugfs_entry binder_debugfs_entries[] = { .fops = &state_fops, .data = NULL, }, + { + .name = "state_hashed", + .mode = 0444, + .fops = &state_hashed_fops, + .data = NULL, + }, { .name = "stats", .mode = 0444, @@ -6926,6 +6972,12 @@ const struct binder_debugfs_entry binder_debugfs_entries[] = { .fops = &transactions_fops, .data = NULL, }, + { + .name = "transactions_hashed", + .mode = 0444, + .fops = &transactions_hashed_fops, + .data = NULL, + }, { .name = "transaction_log", .mode = 0444, -- cgit v1.2.3 From 7b386d7454b610534026b279aa150e5a9e584082 Mon Sep 17 00:00:00 2001 From: Roxana Nicolescu Date: Tue, 6 May 2025 11:00:07 +0000 Subject: misc: lis3lv02d: Fix correct sysfs directory path for lis3lv02d The lis3lv02d driver does not create a platform device anymore. It was recently changed to use a faux device instead. Therefore the sysfs path has changed from /sys/devices/platform/lis3lv02d to /sys/devices/faux/lis3lv02d. Fixes: 3b18ccb5472b ("misc: lis3lv02d: convert to use faux_device") Signed-off-by: Roxana Nicolescu Link: https://lore.kernel.org/r/20250506110002.36477-1-nicolescu.roxana@protonmail.com Signed-off-by: Greg Kroah-Hartman --- Documentation/misc-devices/lis3lv02d.rst | 6 +++--- drivers/misc/lis3lv02d/Kconfig | 4 ++-- 2 files changed, 5 insertions(+), 5 deletions(-) diff --git a/Documentation/misc-devices/lis3lv02d.rst b/Documentation/misc-devices/lis3lv02d.rst index 959bd2b822cf..6b3b7405ebdf 100644 --- a/Documentation/misc-devices/lis3lv02d.rst +++ b/Documentation/misc-devices/lis3lv02d.rst @@ -22,10 +22,10 @@ sporting the feature officially called "HP Mobile Data Protection System 3D" or models (full list can be found in drivers/platform/x86/hp_accel.c) will have their axis automatically oriented on standard way (eg: you can directly play neverball). The accelerometer data is readable via -/sys/devices/platform/lis3lv02d. Reported values are scaled +/sys/devices/faux/lis3lv02d. Reported values are scaled to mg values (1/1000th of earth gravity). -Sysfs attributes under /sys/devices/platform/lis3lv02d/: +Sysfs attributes under /sys/devices/faux/lis3lv02d/: position - 3D position that the accelerometer reports. Format: "(x,y,z)" @@ -85,7 +85,7 @@ the accelerometer are converted into a "standard" organisation of the axes If your laptop model is not recognized (cf "dmesg"), you can send an email to the maintainer to add it to the database. When reporting a new laptop, please include the output of "dmidecode" plus the value of -/sys/devices/platform/lis3lv02d/position in these four cases. +/sys/devices/faux/lis3lv02d/position in these four cases. Q&A --- diff --git a/drivers/misc/lis3lv02d/Kconfig b/drivers/misc/lis3lv02d/Kconfig index bb2fec4b5880..56005243a230 100644 --- a/drivers/misc/lis3lv02d/Kconfig +++ b/drivers/misc/lis3lv02d/Kconfig @@ -10,7 +10,7 @@ config SENSORS_LIS3_SPI help This driver provides support for the LIS3LV02Dx accelerometer connected via SPI. The accelerometer data is readable via - /sys/devices/platform/lis3lv02d. + /sys/devices/faux/lis3lv02d. This driver also provides an absolute input class device, allowing the laptop to act as a pinball machine-esque joystick. @@ -26,7 +26,7 @@ config SENSORS_LIS3_I2C help This driver provides support for the LIS3LV02Dx accelerometer connected via I2C. The accelerometer data is readable via - /sys/devices/platform/lis3lv02d. + /sys/devices/faux/lis3lv02d. This driver also provides an absolute input class device, allowing the device to act as a pinball machine-esque joystick. -- cgit v1.2.3 From 7c970c657cf77ae0f230012138d8871ed573c7c7 Mon Sep 17 00:00:00 2001 From: Rengarajan S Date: Tue, 13 May 2025 14:45:56 +0530 Subject: misc: microchip: pci1xxxx: Add PCIe Hot reset disable support for Rev C0 and later devices Systems that issue PCIe hot reset requests during a suspend/resume cycle cause PCI1XXXX device revisions prior to C0 to get its GPIO configuration registers reset to hardware default values. This results in device inaccessibility and GPIO read/write failure. Starting with Revision C0, support was added in the device hardware (via the Hot Reset Disable Bit) to allow resetting only the PCIe interface and its associated logic, but preserving the GPIO configurations during a hot reset. This patch enables the hot reset disable feature during suspend/ resume for C0 and later revisions of the device. mchp_pci1xxxx_gpio is an auxiliary child of mchp_pci1xxxx_gp and does not have access to system register address space for reading the device revision. Hence, the device revision is retrieved directly from PCIe config space. Signed-off-by: Rengarajan S Link: https://lore.kernel.org/r/20250513091557.3660-2-rengarajan.s@microchip.com Signed-off-by: Greg Kroah-Hartman --- drivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_gpio.c | 31 +++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/drivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_gpio.c b/drivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_gpio.c index c76ffa396669..971ad7344767 100644 --- a/drivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_gpio.c +++ b/drivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_gpio.c @@ -7,12 +7,14 @@ #include #include #include +#include #include #include #include "mchp_pci1xxxx_gp.h" #define PCI1XXXX_NR_PINS 93 +#define PCI_DEV_REV_OFFSET 0x08 #define PERI_GEN_RESET 0 #define OUT_EN_OFFSET(x) ((((x) / 32) * 4) + 0x400) #define INP_EN_OFFSET(x) ((((x) / 32) * 4) + 0x400 + 0x10) @@ -41,8 +43,25 @@ struct pci1xxxx_gpio { struct gpio_chip gpio; spinlock_t lock; int irq_base; + u8 dev_rev; }; +static int pci1xxxx_gpio_get_device_revision(struct pci1xxxx_gpio *priv) +{ + struct device *parent = priv->aux_dev->dev.parent; + struct pci_dev *pcidev = to_pci_dev(parent); + int ret; + u32 val; + + ret = pci_read_config_dword(pcidev, PCI_DEV_REV_OFFSET, &val); + if (ret) + return ret; + + priv->dev_rev = val; + + return 0; +} + static int pci1xxxx_gpio_get_direction(struct gpio_chip *gpio, unsigned int nr) { struct pci1xxxx_gpio *priv = gpiochip_get_data(gpio); @@ -316,6 +335,10 @@ static int pci1xxxx_gpio_suspend(struct device *dev) pci1xxx_assign_bit(priv->reg_base, PIO_GLOBAL_CONFIG_OFFSET, 17, false); pci1xxx_assign_bit(priv->reg_base, PERI_GEN_RESET, 16, true); + + if (priv->dev_rev >= 0xC0) + pci1xxx_assign_bit(priv->reg_base, PERI_GEN_RESET, 17, true); + spin_unlock_irqrestore(&priv->lock, flags); return 0; @@ -332,6 +355,10 @@ static int pci1xxxx_gpio_resume(struct device *dev) pci1xxx_assign_bit(priv->reg_base, PIO_GLOBAL_CONFIG_OFFSET, 16, false); pci1xxx_assign_bit(priv->reg_base, PERI_GEN_RESET, 16, false); + + if (priv->dev_rev >= 0xC0) + pci1xxx_assign_bit(priv->reg_base, PERI_GEN_RESET, 17, false); + spin_unlock_irqrestore(&priv->lock, flags); return 0; @@ -413,6 +440,10 @@ static int pci1xxxx_gpio_probe(struct auxiliary_device *aux_dev, if (retval < 0) return retval; + retval = pci1xxxx_gpio_get_device_revision(priv); + if (retval) + return retval; + dev_set_drvdata(&aux_dev->dev, priv); return devm_gpiochip_add_data(&aux_dev->dev, &priv->gpio, priv); -- cgit v1.2.3 From fb410aa423b2e0bc82534e92dd4121a2046b609f Mon Sep 17 00:00:00 2001 From: Rengarajan S Date: Tue, 13 May 2025 14:45:57 +0530 Subject: misc: microchip: pci1xxxx: Add GPIO Wakeup Support The patch adds PIO asynchronous wakeup support while PIO PCIe Endpoint function is in D3 state. When such a wakeup event occurs, the PIO asserts a PIO_WAKE signal, which in turn triggers PCIe Wake signaling. This wake request should trigger the PCIe Host to take the PIO PCIe Endpoint function into the D0 device state. The device supports up to 96 PIOs distributed across three GPIO banks. During suspend and resume, the driver checks the status of each GPIO bank to determine if any GPIOs with wake masking enabled have triggered an event. Upon resume, PIOxx_STATUS register must be cleared by software explicitly to enable the detection of the next transition. Signed-off-by: Rengarajan S Link: https://lore.kernel.org/r/20250513091557.3660-3-rengarajan.s@microchip.com Signed-off-by: Greg Kroah-Hartman --- drivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_gpio.c | 61 +++++++++++++++++++++++++ 1 file changed, 61 insertions(+) diff --git a/drivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_gpio.c b/drivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_gpio.c index 971ad7344767..ff8f4404d10f 100644 --- a/drivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_gpio.c +++ b/drivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_gpio.c @@ -42,6 +42,7 @@ struct pci1xxxx_gpio { raw_spinlock_t wa_lock; struct gpio_chip gpio; spinlock_t lock; + u32 gpio_wake_mask[3]; int irq_base; u8 dev_rev; }; @@ -273,6 +274,22 @@ static int pci1xxxx_gpio_set_type(struct irq_data *data, unsigned int trigger_ty return true; } +static int pci1xxxx_gpio_set_wake(struct irq_data *data, unsigned int enable) +{ + struct gpio_chip *chip = irq_data_get_irq_chip_data(data); + struct pci1xxxx_gpio *priv = gpiochip_get_data(chip); + unsigned int gpio = irqd_to_hwirq(data); + unsigned int bitpos = gpio % 32; + unsigned int bank = gpio / 32; + + if (enable) + priv->gpio_wake_mask[bank] |= (1 << bitpos); + else + priv->gpio_wake_mask[bank] &= ~(1 << bitpos); + + return 0; +} + static irqreturn_t pci1xxxx_gpio_irq_handler(int irq, void *dev_id) { struct pci1xxxx_gpio *priv = dev_id; @@ -320,6 +337,7 @@ static const struct irq_chip pci1xxxx_gpio_irqchip = { .irq_mask = pci1xxxx_gpio_irq_mask, .irq_unmask = pci1xxxx_gpio_irq_unmask, .irq_set_type = pci1xxxx_gpio_set_type, + .irq_set_wake = pci1xxxx_gpio_set_wake, .flags = IRQCHIP_IMMUTABLE, GPIOCHIP_IRQ_RESOURCE_HELPERS, }; @@ -327,8 +345,26 @@ static const struct irq_chip pci1xxxx_gpio_irqchip = { static int pci1xxxx_gpio_suspend(struct device *dev) { struct pci1xxxx_gpio *priv = dev_get_drvdata(dev); + struct device *parent = priv->aux_dev->dev.parent; + struct pci_dev *pcidev = to_pci_dev(parent); + unsigned int gpio_bank_base; + unsigned int wake_mask; + unsigned int gpiobank; unsigned long flags; + for (gpiobank = 0; gpiobank < 3; gpiobank++) { + wake_mask = priv->gpio_wake_mask[gpiobank]; + + if (wake_mask) { + gpio_bank_base = gpiobank * 32; + + pci1xxx_assign_bit(priv->reg_base, + PIO_PCI_CTRL_REG_OFFSET, 0, true); + writel(~wake_mask, priv->reg_base + + WAKEMASK_OFFSET(gpio_bank_base)); + } + } + spin_lock_irqsave(&priv->lock, flags); pci1xxx_assign_bit(priv->reg_base, PIO_GLOBAL_CONFIG_OFFSET, 16, true); @@ -341,14 +377,37 @@ static int pci1xxxx_gpio_suspend(struct device *dev) spin_unlock_irqrestore(&priv->lock, flags); + device_set_wakeup_enable(&pcidev->dev, true); + pci_wake_from_d3(pcidev, true); + return 0; } static int pci1xxxx_gpio_resume(struct device *dev) { struct pci1xxxx_gpio *priv = dev_get_drvdata(dev); + struct device *parent = priv->aux_dev->dev.parent; + struct pci_dev *pcidev = to_pci_dev(parent); + unsigned int gpio_bank_base; + unsigned int wake_mask; + unsigned int gpiobank; unsigned long flags; + for (gpiobank = 0; gpiobank < 3; gpiobank++) { + wake_mask = priv->gpio_wake_mask[gpiobank]; + + if (wake_mask) { + gpio_bank_base = gpiobank * 32; + + writel(wake_mask, priv->reg_base + + INTR_STAT_OFFSET(gpio_bank_base)); + pci1xxx_assign_bit(priv->reg_base, + PIO_PCI_CTRL_REG_OFFSET, 0, false); + writel(0xffffffff, priv->reg_base + + WAKEMASK_OFFSET(gpio_bank_base)); + } + } + spin_lock_irqsave(&priv->lock, flags); pci1xxx_assign_bit(priv->reg_base, PIO_GLOBAL_CONFIG_OFFSET, 17, true); @@ -361,6 +420,8 @@ static int pci1xxxx_gpio_resume(struct device *dev) spin_unlock_irqrestore(&priv->lock, flags); + pci_wake_from_d3(pcidev, false); + return 0; } -- cgit v1.2.3 From e1565867640506166b6c4182dec9ee955492d003 Mon Sep 17 00:00:00 2001 From: Akshay Gupta Date: Mon, 28 Apr 2025 06:30:25 +0000 Subject: hwmon/misc: amd-sbi: Move core sbrmi from hwmon to misc This is done to support other functionality provided by the SBRMI, which does not fit in the hwmon subsystem. Reviewed-by: Naveen Krishna Chatradhi Signed-off-by: Akshay Gupta Acked-by: Guenter Roeck Link: https://lore.kernel.org/r/20250428063034.2145566-2-akshay.gupta@amd.com Signed-off-by: Greg Kroah-Hartman --- drivers/hwmon/Kconfig | 10 -- drivers/hwmon/sbrmi.c | 357 ------------------------------------------ drivers/misc/Kconfig | 1 + drivers/misc/Makefile | 1 + drivers/misc/amd-sbi/Kconfig | 9 ++ drivers/misc/amd-sbi/Makefile | 2 + drivers/misc/amd-sbi/sbrmi.c | 357 ++++++++++++++++++++++++++++++++++++++++++ 7 files changed, 370 insertions(+), 367 deletions(-) delete mode 100644 drivers/hwmon/sbrmi.c create mode 100644 drivers/misc/amd-sbi/Kconfig create mode 100644 drivers/misc/amd-sbi/Makefile create mode 100644 drivers/misc/amd-sbi/sbrmi.c diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig index f91f713b0105..6ddc5f2b5338 100644 --- a/drivers/hwmon/Kconfig +++ b/drivers/hwmon/Kconfig @@ -1887,16 +1887,6 @@ config SENSORS_SBTSI This driver can also be built as a module. If so, the module will be called sbtsi_temp. -config SENSORS_SBRMI - tristate "Emulated SB-RMI sensor" - depends on I2C - help - If you say yes here you get support for emulated RMI - sensors on AMD SoCs with APML interface connected to a BMC device. - - This driver can also be built as a module. If so, the module will - be called sbrmi. - config SENSORS_SHT15 tristate "Sensiron humidity and temperature sensors. SHT15 and compat." depends on GPIOLIB || COMPILE_TEST diff --git a/drivers/hwmon/sbrmi.c b/drivers/hwmon/sbrmi.c deleted file mode 100644 index d48d8e5460ff..000000000000 --- a/drivers/hwmon/sbrmi.c +++ /dev/null @@ -1,357 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * sbrmi.c - hwmon driver for a SB-RMI mailbox - * compliant AMD SoC device. - * - * Copyright (C) 2020-2021 Advanced Micro Devices, Inc. - */ - -#include -#include -#include -#include -#include -#include -#include -#include - -/* Do not allow setting negative power limit */ -#define SBRMI_PWR_MIN 0 -/* Mask for Status Register bit[1] */ -#define SW_ALERT_MASK 0x2 - -/* Software Interrupt for triggering */ -#define START_CMD 0x80 -#define TRIGGER_MAILBOX 0x01 - -/* - * SB-RMI supports soft mailbox service request to MP1 (power management - * firmware) through SBRMI inbound/outbound message registers. - * SB-RMI message IDs - */ -enum sbrmi_msg_id { - SBRMI_READ_PKG_PWR_CONSUMPTION = 0x1, - SBRMI_WRITE_PKG_PWR_LIMIT, - SBRMI_READ_PKG_PWR_LIMIT, - SBRMI_READ_PKG_MAX_PWR_LIMIT, -}; - -/* SB-RMI registers */ -enum sbrmi_reg { - SBRMI_CTRL = 0x01, - SBRMI_STATUS, - SBRMI_OUTBNDMSG0 = 0x30, - SBRMI_OUTBNDMSG1, - SBRMI_OUTBNDMSG2, - SBRMI_OUTBNDMSG3, - SBRMI_OUTBNDMSG4, - SBRMI_OUTBNDMSG5, - SBRMI_OUTBNDMSG6, - SBRMI_OUTBNDMSG7, - SBRMI_INBNDMSG0, - SBRMI_INBNDMSG1, - SBRMI_INBNDMSG2, - SBRMI_INBNDMSG3, - SBRMI_INBNDMSG4, - SBRMI_INBNDMSG5, - SBRMI_INBNDMSG6, - SBRMI_INBNDMSG7, - SBRMI_SW_INTERRUPT, -}; - -/* Each client has this additional data */ -struct sbrmi_data { - struct i2c_client *client; - struct mutex lock; - u32 pwr_limit_max; -}; - -struct sbrmi_mailbox_msg { - u8 cmd; - bool read; - u32 data_in; - u32 data_out; -}; - -static int sbrmi_enable_alert(struct i2c_client *client) -{ - int ctrl; - - /* - * Enable the SB-RMI Software alert status - * by writing 0 to bit 4 of Control register(0x1) - */ - ctrl = i2c_smbus_read_byte_data(client, SBRMI_CTRL); - if (ctrl < 0) - return ctrl; - - if (ctrl & 0x10) { - ctrl &= ~0x10; - return i2c_smbus_write_byte_data(client, - SBRMI_CTRL, ctrl); - } - - return 0; -} - -static int rmi_mailbox_xfer(struct sbrmi_data *data, - struct sbrmi_mailbox_msg *msg) -{ - int i, ret, retry = 10; - int sw_status; - u8 byte; - - mutex_lock(&data->lock); - - /* Indicate firmware a command is to be serviced */ - ret = i2c_smbus_write_byte_data(data->client, - SBRMI_INBNDMSG7, START_CMD); - if (ret < 0) - goto exit_unlock; - - /* Write the command to SBRMI::InBndMsg_inst0 */ - ret = i2c_smbus_write_byte_data(data->client, - SBRMI_INBNDMSG0, msg->cmd); - if (ret < 0) - goto exit_unlock; - - /* - * For both read and write the initiator (BMC) writes - * Command Data In[31:0] to SBRMI::InBndMsg_inst[4:1] - * SBRMI_x3C(MSB):SBRMI_x39(LSB) - */ - for (i = 0; i < 4; i++) { - byte = (msg->data_in >> i * 8) & 0xff; - ret = i2c_smbus_write_byte_data(data->client, - SBRMI_INBNDMSG1 + i, byte); - if (ret < 0) - goto exit_unlock; - } - - /* - * Write 0x01 to SBRMI::SoftwareInterrupt to notify firmware to - * perform the requested read or write command - */ - ret = i2c_smbus_write_byte_data(data->client, - SBRMI_SW_INTERRUPT, TRIGGER_MAILBOX); - if (ret < 0) - goto exit_unlock; - - /* - * Firmware will write SBRMI::Status[SwAlertSts]=1 to generate - * an ALERT (if enabled) to initiator (BMC) to indicate completion - * of the requested command - */ - do { - sw_status = i2c_smbus_read_byte_data(data->client, - SBRMI_STATUS); - if (sw_status < 0) { - ret = sw_status; - goto exit_unlock; - } - if (sw_status & SW_ALERT_MASK) - break; - usleep_range(50, 100); - } while (retry--); - - if (retry < 0) { - dev_err(&data->client->dev, - "Firmware fail to indicate command completion\n"); - ret = -EIO; - goto exit_unlock; - } - - /* - * For a read operation, the initiator (BMC) reads the firmware - * response Command Data Out[31:0] from SBRMI::OutBndMsg_inst[4:1] - * {SBRMI_x34(MSB):SBRMI_x31(LSB)}. - */ - if (msg->read) { - for (i = 0; i < 4; i++) { - ret = i2c_smbus_read_byte_data(data->client, - SBRMI_OUTBNDMSG1 + i); - if (ret < 0) - goto exit_unlock; - msg->data_out |= ret << i * 8; - } - } - - /* - * BMC must write 1'b1 to SBRMI::Status[SwAlertSts] to clear the - * ALERT to initiator - */ - ret = i2c_smbus_write_byte_data(data->client, SBRMI_STATUS, - sw_status | SW_ALERT_MASK); - -exit_unlock: - mutex_unlock(&data->lock); - return ret; -} - -static int sbrmi_read(struct device *dev, enum hwmon_sensor_types type, - u32 attr, int channel, long *val) -{ - struct sbrmi_data *data = dev_get_drvdata(dev); - struct sbrmi_mailbox_msg msg = { 0 }; - int ret; - - if (type != hwmon_power) - return -EINVAL; - - msg.read = true; - switch (attr) { - case hwmon_power_input: - msg.cmd = SBRMI_READ_PKG_PWR_CONSUMPTION; - ret = rmi_mailbox_xfer(data, &msg); - break; - case hwmon_power_cap: - msg.cmd = SBRMI_READ_PKG_PWR_LIMIT; - ret = rmi_mailbox_xfer(data, &msg); - break; - case hwmon_power_cap_max: - msg.data_out = data->pwr_limit_max; - ret = 0; - break; - default: - return -EINVAL; - } - if (ret < 0) - return ret; - /* hwmon power attributes are in microWatt */ - *val = (long)msg.data_out * 1000; - return ret; -} - -static int sbrmi_write(struct device *dev, enum hwmon_sensor_types type, - u32 attr, int channel, long val) -{ - struct sbrmi_data *data = dev_get_drvdata(dev); - struct sbrmi_mailbox_msg msg = { 0 }; - - if (type != hwmon_power && attr != hwmon_power_cap) - return -EINVAL; - /* - * hwmon power attributes are in microWatt - * mailbox read/write is in mWatt - */ - val /= 1000; - - val = clamp_val(val, SBRMI_PWR_MIN, data->pwr_limit_max); - - msg.cmd = SBRMI_WRITE_PKG_PWR_LIMIT; - msg.data_in = val; - msg.read = false; - - return rmi_mailbox_xfer(data, &msg); -} - -static umode_t sbrmi_is_visible(const void *data, - enum hwmon_sensor_types type, - u32 attr, int channel) -{ - switch (type) { - case hwmon_power: - switch (attr) { - case hwmon_power_input: - case hwmon_power_cap_max: - return 0444; - case hwmon_power_cap: - return 0644; - } - break; - default: - break; - } - return 0; -} - -static const struct hwmon_channel_info * const sbrmi_info[] = { - HWMON_CHANNEL_INFO(power, - HWMON_P_INPUT | HWMON_P_CAP | HWMON_P_CAP_MAX), - NULL -}; - -static const struct hwmon_ops sbrmi_hwmon_ops = { - .is_visible = sbrmi_is_visible, - .read = sbrmi_read, - .write = sbrmi_write, -}; - -static const struct hwmon_chip_info sbrmi_chip_info = { - .ops = &sbrmi_hwmon_ops, - .info = sbrmi_info, -}; - -static int sbrmi_get_max_pwr_limit(struct sbrmi_data *data) -{ - struct sbrmi_mailbox_msg msg = { 0 }; - int ret; - - msg.cmd = SBRMI_READ_PKG_MAX_PWR_LIMIT; - msg.read = true; - ret = rmi_mailbox_xfer(data, &msg); - if (ret < 0) - return ret; - data->pwr_limit_max = msg.data_out; - - return ret; -} - -static int sbrmi_probe(struct i2c_client *client) -{ - struct device *dev = &client->dev; - struct device *hwmon_dev; - struct sbrmi_data *data; - int ret; - - data = devm_kzalloc(dev, sizeof(struct sbrmi_data), GFP_KERNEL); - if (!data) - return -ENOMEM; - - data->client = client; - mutex_init(&data->lock); - - /* Enable alert for SB-RMI sequence */ - ret = sbrmi_enable_alert(client); - if (ret < 0) - return ret; - - /* Cache maximum power limit */ - ret = sbrmi_get_max_pwr_limit(data); - if (ret < 0) - return ret; - - hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name, data, - &sbrmi_chip_info, NULL); - - return PTR_ERR_OR_ZERO(hwmon_dev); -} - -static const struct i2c_device_id sbrmi_id[] = { - {"sbrmi"}, - {} -}; -MODULE_DEVICE_TABLE(i2c, sbrmi_id); - -static const struct of_device_id __maybe_unused sbrmi_of_match[] = { - { - .compatible = "amd,sbrmi", - }, - { }, -}; -MODULE_DEVICE_TABLE(of, sbrmi_of_match); - -static struct i2c_driver sbrmi_driver = { - .driver = { - .name = "sbrmi", - .of_match_table = of_match_ptr(sbrmi_of_match), - }, - .probe = sbrmi_probe, - .id_table = sbrmi_id, -}; - -module_i2c_driver(sbrmi_driver); - -MODULE_AUTHOR("Akshay Gupta "); -MODULE_DESCRIPTION("Hwmon driver for AMD SB-RMI emulated sensor"); -MODULE_LICENSE("GPL"); diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig index 052ab185f876..0de7c35f6fe5 100644 --- a/drivers/misc/Kconfig +++ b/drivers/misc/Kconfig @@ -647,4 +647,5 @@ source "drivers/misc/uacce/Kconfig" source "drivers/misc/pvpanic/Kconfig" source "drivers/misc/mchp_pci1xxxx/Kconfig" source "drivers/misc/keba/Kconfig" +source "drivers/misc/amd-sbi/Kconfig" endmenu diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile index 0b601e6404e1..b628044fb74e 100644 --- a/drivers/misc/Makefile +++ b/drivers/misc/Makefile @@ -73,3 +73,4 @@ lan966x-pci-objs := lan966x_pci.o lan966x-pci-objs += lan966x_pci.dtbo.o obj-$(CONFIG_MCHP_LAN966X_PCI) += lan966x-pci.o obj-y += keba/ +obj-y += amd-sbi/ diff --git a/drivers/misc/amd-sbi/Kconfig b/drivers/misc/amd-sbi/Kconfig new file mode 100644 index 000000000000..be2d9e495eb7 --- /dev/null +++ b/drivers/misc/amd-sbi/Kconfig @@ -0,0 +1,9 @@ +# SPDX-License-Identifier: GPL-2.0-only +config AMD_SBRMI_I2C + tristate "AMD side band RMI support" + depends on I2C + help + Side band RMI over I2C support for AMD out of band management. + + This driver can also be built as a module. If so, the module will + be called sbrmi-i2c. diff --git a/drivers/misc/amd-sbi/Makefile b/drivers/misc/amd-sbi/Makefile new file mode 100644 index 000000000000..304394bf5e59 --- /dev/null +++ b/drivers/misc/amd-sbi/Makefile @@ -0,0 +1,2 @@ +# SPDX-License-Identifier: GPL-2.0-only +obj-$(CONFIG_AMD_SBRMI_I2C) += sbrmi.o diff --git a/drivers/misc/amd-sbi/sbrmi.c b/drivers/misc/amd-sbi/sbrmi.c new file mode 100644 index 000000000000..d48d8e5460ff --- /dev/null +++ b/drivers/misc/amd-sbi/sbrmi.c @@ -0,0 +1,357 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * sbrmi.c - hwmon driver for a SB-RMI mailbox + * compliant AMD SoC device. + * + * Copyright (C) 2020-2021 Advanced Micro Devices, Inc. + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +/* Do not allow setting negative power limit */ +#define SBRMI_PWR_MIN 0 +/* Mask for Status Register bit[1] */ +#define SW_ALERT_MASK 0x2 + +/* Software Interrupt for triggering */ +#define START_CMD 0x80 +#define TRIGGER_MAILBOX 0x01 + +/* + * SB-RMI supports soft mailbox service request to MP1 (power management + * firmware) through SBRMI inbound/outbound message registers. + * SB-RMI message IDs + */ +enum sbrmi_msg_id { + SBRMI_READ_PKG_PWR_CONSUMPTION = 0x1, + SBRMI_WRITE_PKG_PWR_LIMIT, + SBRMI_READ_PKG_PWR_LIMIT, + SBRMI_READ_PKG_MAX_PWR_LIMIT, +}; + +/* SB-RMI registers */ +enum sbrmi_reg { + SBRMI_CTRL = 0x01, + SBRMI_STATUS, + SBRMI_OUTBNDMSG0 = 0x30, + SBRMI_OUTBNDMSG1, + SBRMI_OUTBNDMSG2, + SBRMI_OUTBNDMSG3, + SBRMI_OUTBNDMSG4, + SBRMI_OUTBNDMSG5, + SBRMI_OUTBNDMSG6, + SBRMI_OUTBNDMSG7, + SBRMI_INBNDMSG0, + SBRMI_INBNDMSG1, + SBRMI_INBNDMSG2, + SBRMI_INBNDMSG3, + SBRMI_INBNDMSG4, + SBRMI_INBNDMSG5, + SBRMI_INBNDMSG6, + SBRMI_INBNDMSG7, + SBRMI_SW_INTERRUPT, +}; + +/* Each client has this additional data */ +struct sbrmi_data { + struct i2c_client *client; + struct mutex lock; + u32 pwr_limit_max; +}; + +struct sbrmi_mailbox_msg { + u8 cmd; + bool read; + u32 data_in; + u32 data_out; +}; + +static int sbrmi_enable_alert(struct i2c_client *client) +{ + int ctrl; + + /* + * Enable the SB-RMI Software alert status + * by writing 0 to bit 4 of Control register(0x1) + */ + ctrl = i2c_smbus_read_byte_data(client, SBRMI_CTRL); + if (ctrl < 0) + return ctrl; + + if (ctrl & 0x10) { + ctrl &= ~0x10; + return i2c_smbus_write_byte_data(client, + SBRMI_CTRL, ctrl); + } + + return 0; +} + +static int rmi_mailbox_xfer(struct sbrmi_data *data, + struct sbrmi_mailbox_msg *msg) +{ + int i, ret, retry = 10; + int sw_status; + u8 byte; + + mutex_lock(&data->lock); + + /* Indicate firmware a command is to be serviced */ + ret = i2c_smbus_write_byte_data(data->client, + SBRMI_INBNDMSG7, START_CMD); + if (ret < 0) + goto exit_unlock; + + /* Write the command to SBRMI::InBndMsg_inst0 */ + ret = i2c_smbus_write_byte_data(data->client, + SBRMI_INBNDMSG0, msg->cmd); + if (ret < 0) + goto exit_unlock; + + /* + * For both read and write the initiator (BMC) writes + * Command Data In[31:0] to SBRMI::InBndMsg_inst[4:1] + * SBRMI_x3C(MSB):SBRMI_x39(LSB) + */ + for (i = 0; i < 4; i++) { + byte = (msg->data_in >> i * 8) & 0xff; + ret = i2c_smbus_write_byte_data(data->client, + SBRMI_INBNDMSG1 + i, byte); + if (ret < 0) + goto exit_unlock; + } + + /* + * Write 0x01 to SBRMI::SoftwareInterrupt to notify firmware to + * perform the requested read or write command + */ + ret = i2c_smbus_write_byte_data(data->client, + SBRMI_SW_INTERRUPT, TRIGGER_MAILBOX); + if (ret < 0) + goto exit_unlock; + + /* + * Firmware will write SBRMI::Status[SwAlertSts]=1 to generate + * an ALERT (if enabled) to initiator (BMC) to indicate completion + * of the requested command + */ + do { + sw_status = i2c_smbus_read_byte_data(data->client, + SBRMI_STATUS); + if (sw_status < 0) { + ret = sw_status; + goto exit_unlock; + } + if (sw_status & SW_ALERT_MASK) + break; + usleep_range(50, 100); + } while (retry--); + + if (retry < 0) { + dev_err(&data->client->dev, + "Firmware fail to indicate command completion\n"); + ret = -EIO; + goto exit_unlock; + } + + /* + * For a read operation, the initiator (BMC) reads the firmware + * response Command Data Out[31:0] from SBRMI::OutBndMsg_inst[4:1] + * {SBRMI_x34(MSB):SBRMI_x31(LSB)}. + */ + if (msg->read) { + for (i = 0; i < 4; i++) { + ret = i2c_smbus_read_byte_data(data->client, + SBRMI_OUTBNDMSG1 + i); + if (ret < 0) + goto exit_unlock; + msg->data_out |= ret << i * 8; + } + } + + /* + * BMC must write 1'b1 to SBRMI::Status[SwAlertSts] to clear the + * ALERT to initiator + */ + ret = i2c_smbus_write_byte_data(data->client, SBRMI_STATUS, + sw_status | SW_ALERT_MASK); + +exit_unlock: + mutex_unlock(&data->lock); + return ret; +} + +static int sbrmi_read(struct device *dev, enum hwmon_sensor_types type, + u32 attr, int channel, long *val) +{ + struct sbrmi_data *data = dev_get_drvdata(dev); + struct sbrmi_mailbox_msg msg = { 0 }; + int ret; + + if (type != hwmon_power) + return -EINVAL; + + msg.read = true; + switch (attr) { + case hwmon_power_input: + msg.cmd = SBRMI_READ_PKG_PWR_CONSUMPTION; + ret = rmi_mailbox_xfer(data, &msg); + break; + case hwmon_power_cap: + msg.cmd = SBRMI_READ_PKG_PWR_LIMIT; + ret = rmi_mailbox_xfer(data, &msg); + break; + case hwmon_power_cap_max: + msg.data_out = data->pwr_limit_max; + ret = 0; + break; + default: + return -EINVAL; + } + if (ret < 0) + return ret; + /* hwmon power attributes are in microWatt */ + *val = (long)msg.data_out * 1000; + return ret; +} + +static int sbrmi_write(struct device *dev, enum hwmon_sensor_types type, + u32 attr, int channel, long val) +{ + struct sbrmi_data *data = dev_get_drvdata(dev); + struct sbrmi_mailbox_msg msg = { 0 }; + + if (type != hwmon_power && attr != hwmon_power_cap) + return -EINVAL; + /* + * hwmon power attributes are in microWatt + * mailbox read/write is in mWatt + */ + val /= 1000; + + val = clamp_val(val, SBRMI_PWR_MIN, data->pwr_limit_max); + + msg.cmd = SBRMI_WRITE_PKG_PWR_LIMIT; + msg.data_in = val; + msg.read = false; + + return rmi_mailbox_xfer(data, &msg); +} + +static umode_t sbrmi_is_visible(const void *data, + enum hwmon_sensor_types type, + u32 attr, int channel) +{ + switch (type) { + case hwmon_power: + switch (attr) { + case hwmon_power_input: + case hwmon_power_cap_max: + return 0444; + case hwmon_power_cap: + return 0644; + } + break; + default: + break; + } + return 0; +} + +static const struct hwmon_channel_info * const sbrmi_info[] = { + HWMON_CHANNEL_INFO(power, + HWMON_P_INPUT | HWMON_P_CAP | HWMON_P_CAP_MAX), + NULL +}; + +static const struct hwmon_ops sbrmi_hwmon_ops = { + .is_visible = sbrmi_is_visible, + .read = sbrmi_read, + .write = sbrmi_write, +}; + +static const struct hwmon_chip_info sbrmi_chip_info = { + .ops = &sbrmi_hwmon_ops, + .info = sbrmi_info, +}; + +static int sbrmi_get_max_pwr_limit(struct sbrmi_data *data) +{ + struct sbrmi_mailbox_msg msg = { 0 }; + int ret; + + msg.cmd = SBRMI_READ_PKG_MAX_PWR_LIMIT; + msg.read = true; + ret = rmi_mailbox_xfer(data, &msg); + if (ret < 0) + return ret; + data->pwr_limit_max = msg.data_out; + + return ret; +} + +static int sbrmi_probe(struct i2c_client *client) +{ + struct device *dev = &client->dev; + struct device *hwmon_dev; + struct sbrmi_data *data; + int ret; + + data = devm_kzalloc(dev, sizeof(struct sbrmi_data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + data->client = client; + mutex_init(&data->lock); + + /* Enable alert for SB-RMI sequence */ + ret = sbrmi_enable_alert(client); + if (ret < 0) + return ret; + + /* Cache maximum power limit */ + ret = sbrmi_get_max_pwr_limit(data); + if (ret < 0) + return ret; + + hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name, data, + &sbrmi_chip_info, NULL); + + return PTR_ERR_OR_ZERO(hwmon_dev); +} + +static const struct i2c_device_id sbrmi_id[] = { + {"sbrmi"}, + {} +}; +MODULE_DEVICE_TABLE(i2c, sbrmi_id); + +static const struct of_device_id __maybe_unused sbrmi_of_match[] = { + { + .compatible = "amd,sbrmi", + }, + { }, +}; +MODULE_DEVICE_TABLE(of, sbrmi_of_match); + +static struct i2c_driver sbrmi_driver = { + .driver = { + .name = "sbrmi", + .of_match_table = of_match_ptr(sbrmi_of_match), + }, + .probe = sbrmi_probe, + .id_table = sbrmi_id, +}; + +module_i2c_driver(sbrmi_driver); + +MODULE_AUTHOR("Akshay Gupta "); +MODULE_DESCRIPTION("Hwmon driver for AMD SB-RMI emulated sensor"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3 From 43470595e72bd4448fcf0cd720c4d37c34035eb7 Mon Sep 17 00:00:00 2001 From: Akshay Gupta Date: Mon, 28 Apr 2025 06:30:26 +0000 Subject: misc: amd-sbi: Move protocol functionality to core file - This is done to utilize the protocol functionality into other domains. - Increase the scalability of the module with different bus(i2c/i3c) Reviewed-by: Naveen Krishna Chatradhi Signed-off-by: Akshay Gupta Link: https://lore.kernel.org/r/20250428063034.2145566-3-akshay.gupta@amd.com Signed-off-by: Greg Kroah-Hartman --- drivers/misc/amd-sbi/Kconfig | 9 +- drivers/misc/amd-sbi/Makefile | 3 +- drivers/misc/amd-sbi/rmi-core.c | 113 +++++++++++++ drivers/misc/amd-sbi/rmi-core.h | 63 +++++++ drivers/misc/amd-sbi/rmi-i2c.c | 209 +++++++++++++++++++++++ drivers/misc/amd-sbi/sbrmi.c | 357 ---------------------------------------- 6 files changed, 392 insertions(+), 362 deletions(-) create mode 100644 drivers/misc/amd-sbi/rmi-core.c create mode 100644 drivers/misc/amd-sbi/rmi-core.h create mode 100644 drivers/misc/amd-sbi/rmi-i2c.c delete mode 100644 drivers/misc/amd-sbi/sbrmi.c diff --git a/drivers/misc/amd-sbi/Kconfig b/drivers/misc/amd-sbi/Kconfig index be2d9e495eb7..0c8981f97f25 100644 --- a/drivers/misc/amd-sbi/Kconfig +++ b/drivers/misc/amd-sbi/Kconfig @@ -1,9 +1,10 @@ # SPDX-License-Identifier: GPL-2.0-only config AMD_SBRMI_I2C - tristate "AMD side band RMI support" - depends on I2C - help - Side band RMI over I2C support for AMD out of band management. + tristate "AMD side band RMI support" + depends on I2C + depends on HWMON + help + Side band RMI over I2C support for AMD out of band management. This driver can also be built as a module. If so, the module will be called sbrmi-i2c. diff --git a/drivers/misc/amd-sbi/Makefile b/drivers/misc/amd-sbi/Makefile index 304394bf5e59..7cd8e0a1aa5d 100644 --- a/drivers/misc/amd-sbi/Makefile +++ b/drivers/misc/amd-sbi/Makefile @@ -1,2 +1,3 @@ # SPDX-License-Identifier: GPL-2.0-only -obj-$(CONFIG_AMD_SBRMI_I2C) += sbrmi.o +sbrmi-i2c-objs := rmi-i2c.o rmi-core.o +obj-$(CONFIG_AMD_SBRMI_I2C) += sbrmi-i2c.o diff --git a/drivers/misc/amd-sbi/rmi-core.c b/drivers/misc/amd-sbi/rmi-core.c new file mode 100644 index 000000000000..74456756270c --- /dev/null +++ b/drivers/misc/amd-sbi/rmi-core.c @@ -0,0 +1,113 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * sbrmi-core.c - file defining SB-RMI protocols compliant + * AMD SoC device. + * + * Copyright (C) 2025 Advanced Micro Devices, Inc. + */ +#include +#include +#include +#include +#include "rmi-core.h" + +/* Mask for Status Register bit[1] */ +#define SW_ALERT_MASK 0x2 + +/* Software Interrupt for triggering */ +#define START_CMD 0x80 +#define TRIGGER_MAILBOX 0x01 + +int rmi_mailbox_xfer(struct sbrmi_data *data, + struct sbrmi_mailbox_msg *msg) +{ + int i, ret, retry = 10; + int sw_status; + u8 byte; + + mutex_lock(&data->lock); + + /* Indicate firmware a command is to be serviced */ + ret = i2c_smbus_write_byte_data(data->client, + SBRMI_INBNDMSG7, START_CMD); + if (ret < 0) + goto exit_unlock; + + /* Write the command to SBRMI::InBndMsg_inst0 */ + ret = i2c_smbus_write_byte_data(data->client, + SBRMI_INBNDMSG0, msg->cmd); + if (ret < 0) + goto exit_unlock; + + /* + * For both read and write the initiator (BMC) writes + * Command Data In[31:0] to SBRMI::InBndMsg_inst[4:1] + * SBRMI_x3C(MSB):SBRMI_x39(LSB) + */ + for (i = 0; i < 4; i++) { + byte = (msg->data_in >> i * 8) & 0xff; + ret = i2c_smbus_write_byte_data(data->client, + SBRMI_INBNDMSG1 + i, byte); + if (ret < 0) + goto exit_unlock; + } + + /* + * Write 0x01 to SBRMI::SoftwareInterrupt to notify firmware to + * perform the requested read or write command + */ + ret = i2c_smbus_write_byte_data(data->client, + SBRMI_SW_INTERRUPT, TRIGGER_MAILBOX); + if (ret < 0) + goto exit_unlock; + + /* + * Firmware will write SBRMI::Status[SwAlertSts]=1 to generate + * an ALERT (if enabled) to initiator (BMC) to indicate completion + * of the requested command + */ + do { + sw_status = i2c_smbus_read_byte_data(data->client, + SBRMI_STATUS); + if (sw_status < 0) { + ret = sw_status; + goto exit_unlock; + } + if (sw_status & SW_ALERT_MASK) + break; + usleep_range(50, 100); + } while (retry--); + + if (retry < 0) { + dev_err(&data->client->dev, + "Firmware fail to indicate command completion\n"); + ret = -EIO; + goto exit_unlock; + } + + /* + * For a read operation, the initiator (BMC) reads the firmware + * response Command Data Out[31:0] from SBRMI::OutBndMsg_inst[4:1] + * {SBRMI_x34(MSB):SBRMI_x31(LSB)}. + */ + if (msg->read) { + for (i = 0; i < 4; i++) { + ret = i2c_smbus_read_byte_data(data->client, + SBRMI_OUTBNDMSG1 + i); + if (ret < 0) + goto exit_unlock; + msg->data_out |= ret << i * 8; + } + } + + /* + * BMC must write 1'b1 to SBRMI::Status[SwAlertSts] to clear the + * ALERT to initiator + */ + ret = i2c_smbus_write_byte_data(data->client, SBRMI_STATUS, + sw_status | SW_ALERT_MASK); + +exit_unlock: + mutex_unlock(&data->lock); + return ret; +} diff --git a/drivers/misc/amd-sbi/rmi-core.h b/drivers/misc/amd-sbi/rmi-core.h new file mode 100644 index 000000000000..8e30a43ec714 --- /dev/null +++ b/drivers/misc/amd-sbi/rmi-core.h @@ -0,0 +1,63 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Copyright (C) 2025 Advanced Micro Devices, Inc. + */ + +#ifndef _SBRMI_CORE_H_ +#define _SBRMI_CORE_H_ + +#include +#include +#include + +/* SB-RMI registers */ +enum sbrmi_reg { + SBRMI_CTRL = 0x01, + SBRMI_STATUS, + SBRMI_OUTBNDMSG0 = 0x30, + SBRMI_OUTBNDMSG1, + SBRMI_OUTBNDMSG2, + SBRMI_OUTBNDMSG3, + SBRMI_OUTBNDMSG4, + SBRMI_OUTBNDMSG5, + SBRMI_OUTBNDMSG6, + SBRMI_OUTBNDMSG7, + SBRMI_INBNDMSG0, + SBRMI_INBNDMSG1, + SBRMI_INBNDMSG2, + SBRMI_INBNDMSG3, + SBRMI_INBNDMSG4, + SBRMI_INBNDMSG5, + SBRMI_INBNDMSG6, + SBRMI_INBNDMSG7, + SBRMI_SW_INTERRUPT, +}; + +/* + * SB-RMI supports soft mailbox service request to MP1 (power management + * firmware) through SBRMI inbound/outbound message registers. + * SB-RMI message IDs + */ +enum sbrmi_msg_id { + SBRMI_READ_PKG_PWR_CONSUMPTION = 0x1, + SBRMI_WRITE_PKG_PWR_LIMIT, + SBRMI_READ_PKG_PWR_LIMIT, + SBRMI_READ_PKG_MAX_PWR_LIMIT, +}; + +/* Each client has this additional data */ +struct sbrmi_data { + struct i2c_client *client; + struct mutex lock; + u32 pwr_limit_max; +}; + +struct sbrmi_mailbox_msg { + u8 cmd; + bool read; + u32 data_in; + u32 data_out; +}; + +int rmi_mailbox_xfer(struct sbrmi_data *data, struct sbrmi_mailbox_msg *msg); +#endif /*_SBRMI_CORE_H_*/ diff --git a/drivers/misc/amd-sbi/rmi-i2c.c b/drivers/misc/amd-sbi/rmi-i2c.c new file mode 100644 index 000000000000..6412f00eb381 --- /dev/null +++ b/drivers/misc/amd-sbi/rmi-i2c.c @@ -0,0 +1,209 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * rmi-i2c.c - Side band RMI over I2C support for AMD out + * of band management + * + * Copyright (C) 2024 Advanced Micro Devices, Inc. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include "rmi-core.h" + +/* Do not allow setting negative power limit */ +#define SBRMI_PWR_MIN 0 + +static int sbrmi_enable_alert(struct i2c_client *client) +{ + int ctrl; + + /* + * Enable the SB-RMI Software alert status + * by writing 0 to bit 4 of Control register(0x1) + */ + ctrl = i2c_smbus_read_byte_data(client, SBRMI_CTRL); + if (ctrl < 0) + return ctrl; + + if (ctrl & 0x10) { + ctrl &= ~0x10; + return i2c_smbus_write_byte_data(client, + SBRMI_CTRL, ctrl); + } + + return 0; +} + +static int sbrmi_read(struct device *dev, enum hwmon_sensor_types type, + u32 attr, int channel, long *val) +{ + struct sbrmi_data *data = dev_get_drvdata(dev); + struct sbrmi_mailbox_msg msg = { 0 }; + int ret; + + if (type != hwmon_power) + return -EINVAL; + + msg.read = true; + switch (attr) { + case hwmon_power_input: + msg.cmd = SBRMI_READ_PKG_PWR_CONSUMPTION; + ret = rmi_mailbox_xfer(data, &msg); + break; + case hwmon_power_cap: + msg.cmd = SBRMI_READ_PKG_PWR_LIMIT; + ret = rmi_mailbox_xfer(data, &msg); + break; + case hwmon_power_cap_max: + msg.data_out = data->pwr_limit_max; + ret = 0; + break; + default: + return -EINVAL; + } + if (ret < 0) + return ret; + /* hwmon power attributes are in microWatt */ + *val = (long)msg.data_out * 1000; + return ret; +} + +static int sbrmi_write(struct device *dev, enum hwmon_sensor_types type, + u32 attr, int channel, long val) +{ + struct sbrmi_data *data = dev_get_drvdata(dev); + struct sbrmi_mailbox_msg msg = { 0 }; + + if (type != hwmon_power && attr != hwmon_power_cap) + return -EINVAL; + /* + * hwmon power attributes are in microWatt + * mailbox read/write is in mWatt + */ + val /= 1000; + + val = clamp_val(val, SBRMI_PWR_MIN, data->pwr_limit_max); + + msg.cmd = SBRMI_WRITE_PKG_PWR_LIMIT; + msg.data_in = val; + msg.read = false; + + return rmi_mailbox_xfer(data, &msg); +} + +static umode_t sbrmi_is_visible(const void *data, + enum hwmon_sensor_types type, + u32 attr, int channel) +{ + switch (type) { + case hwmon_power: + switch (attr) { + case hwmon_power_input: + case hwmon_power_cap_max: + return 0444; + case hwmon_power_cap: + return 0644; + } + break; + default: + break; + } + return 0; +} + +static const struct hwmon_channel_info * const sbrmi_info[] = { + HWMON_CHANNEL_INFO(power, + HWMON_P_INPUT | HWMON_P_CAP | HWMON_P_CAP_MAX), + NULL +}; + +static const struct hwmon_ops sbrmi_hwmon_ops = { + .is_visible = sbrmi_is_visible, + .read = sbrmi_read, + .write = sbrmi_write, +}; + +static const struct hwmon_chip_info sbrmi_chip_info = { + .ops = &sbrmi_hwmon_ops, + .info = sbrmi_info, +}; + +static int sbrmi_get_max_pwr_limit(struct sbrmi_data *data) +{ + struct sbrmi_mailbox_msg msg = { 0 }; + int ret; + + msg.cmd = SBRMI_READ_PKG_MAX_PWR_LIMIT; + msg.read = true; + ret = rmi_mailbox_xfer(data, &msg); + if (ret < 0) + return ret; + data->pwr_limit_max = msg.data_out; + + return ret; +} + +static int sbrmi_i2c_probe(struct i2c_client *client) +{ + struct device *dev = &client->dev; + struct device *hwmon_dev; + struct sbrmi_data *data; + int ret; + + data = devm_kzalloc(dev, sizeof(struct sbrmi_data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + data->client = client; + mutex_init(&data->lock); + + /* Enable alert for SB-RMI sequence */ + ret = sbrmi_enable_alert(client); + if (ret < 0) + return ret; + + /* Cache maximum power limit */ + ret = sbrmi_get_max_pwr_limit(data); + if (ret < 0) + return ret; + + hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name, data, + &sbrmi_chip_info, NULL); + return PTR_ERR_OR_ZERO(hwmon_dev); +} + +static const struct i2c_device_id sbrmi_id[] = { + {"sbrmi-i2c"}, + {} +}; +MODULE_DEVICE_TABLE(i2c, sbrmi_id); + +static const struct of_device_id __maybe_unused sbrmi_of_match[] = { + { + .compatible = "amd,sbrmi", + }, + { }, +}; +MODULE_DEVICE_TABLE(of, sbrmi_of_match); + +static struct i2c_driver sbrmi_driver = { + .driver = { + .name = "sbrmi-i2c", + .of_match_table = of_match_ptr(sbrmi_of_match), + }, + .probe = sbrmi_i2c_probe, + .id_table = sbrmi_id, +}; + +module_i2c_driver(sbrmi_driver); + +MODULE_AUTHOR("Akshay Gupta "); +MODULE_AUTHOR("Naveen Krishna Chatradhi "); +MODULE_DESCRIPTION("Hwmon driver for AMD SB-RMI emulated sensor"); +MODULE_LICENSE("GPL"); diff --git a/drivers/misc/amd-sbi/sbrmi.c b/drivers/misc/amd-sbi/sbrmi.c deleted file mode 100644 index d48d8e5460ff..000000000000 --- a/drivers/misc/amd-sbi/sbrmi.c +++ /dev/null @@ -1,357 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * sbrmi.c - hwmon driver for a SB-RMI mailbox - * compliant AMD SoC device. - * - * Copyright (C) 2020-2021 Advanced Micro Devices, Inc. - */ - -#include -#include -#include -#include -#include -#include -#include -#include - -/* Do not allow setting negative power limit */ -#define SBRMI_PWR_MIN 0 -/* Mask for Status Register bit[1] */ -#define SW_ALERT_MASK 0x2 - -/* Software Interrupt for triggering */ -#define START_CMD 0x80 -#define TRIGGER_MAILBOX 0x01 - -/* - * SB-RMI supports soft mailbox service request to MP1 (power management - * firmware) through SBRMI inbound/outbound message registers. - * SB-RMI message IDs - */ -enum sbrmi_msg_id { - SBRMI_READ_PKG_PWR_CONSUMPTION = 0x1, - SBRMI_WRITE_PKG_PWR_LIMIT, - SBRMI_READ_PKG_PWR_LIMIT, - SBRMI_READ_PKG_MAX_PWR_LIMIT, -}; - -/* SB-RMI registers */ -enum sbrmi_reg { - SBRMI_CTRL = 0x01, - SBRMI_STATUS, - SBRMI_OUTBNDMSG0 = 0x30, - SBRMI_OUTBNDMSG1, - SBRMI_OUTBNDMSG2, - SBRMI_OUTBNDMSG3, - SBRMI_OUTBNDMSG4, - SBRMI_OUTBNDMSG5, - SBRMI_OUTBNDMSG6, - SBRMI_OUTBNDMSG7, - SBRMI_INBNDMSG0, - SBRMI_INBNDMSG1, - SBRMI_INBNDMSG2, - SBRMI_INBNDMSG3, - SBRMI_INBNDMSG4, - SBRMI_INBNDMSG5, - SBRMI_INBNDMSG6, - SBRMI_INBNDMSG7, - SBRMI_SW_INTERRUPT, -}; - -/* Each client has this additional data */ -struct sbrmi_data { - struct i2c_client *client; - struct mutex lock; - u32 pwr_limit_max; -}; - -struct sbrmi_mailbox_msg { - u8 cmd; - bool read; - u32 data_in; - u32 data_out; -}; - -static int sbrmi_enable_alert(struct i2c_client *client) -{ - int ctrl; - - /* - * Enable the SB-RMI Software alert status - * by writing 0 to bit 4 of Control register(0x1) - */ - ctrl = i2c_smbus_read_byte_data(client, SBRMI_CTRL); - if (ctrl < 0) - return ctrl; - - if (ctrl & 0x10) { - ctrl &= ~0x10; - return i2c_smbus_write_byte_data(client, - SBRMI_CTRL, ctrl); - } - - return 0; -} - -static int rmi_mailbox_xfer(struct sbrmi_data *data, - struct sbrmi_mailbox_msg *msg) -{ - int i, ret, retry = 10; - int sw_status; - u8 byte; - - mutex_lock(&data->lock); - - /* Indicate firmware a command is to be serviced */ - ret = i2c_smbus_write_byte_data(data->client, - SBRMI_INBNDMSG7, START_CMD); - if (ret < 0) - goto exit_unlock; - - /* Write the command to SBRMI::InBndMsg_inst0 */ - ret = i2c_smbus_write_byte_data(data->client, - SBRMI_INBNDMSG0, msg->cmd); - if (ret < 0) - goto exit_unlock; - - /* - * For both read and write the initiator (BMC) writes - * Command Data In[31:0] to SBRMI::InBndMsg_inst[4:1] - * SBRMI_x3C(MSB):SBRMI_x39(LSB) - */ - for (i = 0; i < 4; i++) { - byte = (msg->data_in >> i * 8) & 0xff; - ret = i2c_smbus_write_byte_data(data->client, - SBRMI_INBNDMSG1 + i, byte); - if (ret < 0) - goto exit_unlock; - } - - /* - * Write 0x01 to SBRMI::SoftwareInterrupt to notify firmware to - * perform the requested read or write command - */ - ret = i2c_smbus_write_byte_data(data->client, - SBRMI_SW_INTERRUPT, TRIGGER_MAILBOX); - if (ret < 0) - goto exit_unlock; - - /* - * Firmware will write SBRMI::Status[SwAlertSts]=1 to generate - * an ALERT (if enabled) to initiator (BMC) to indicate completion - * of the requested command - */ - do { - sw_status = i2c_smbus_read_byte_data(data->client, - SBRMI_STATUS); - if (sw_status < 0) { - ret = sw_status; - goto exit_unlock; - } - if (sw_status & SW_ALERT_MASK) - break; - usleep_range(50, 100); - } while (retry--); - - if (retry < 0) { - dev_err(&data->client->dev, - "Firmware fail to indicate command completion\n"); - ret = -EIO; - goto exit_unlock; - } - - /* - * For a read operation, the initiator (BMC) reads the firmware - * response Command Data Out[31:0] from SBRMI::OutBndMsg_inst[4:1] - * {SBRMI_x34(MSB):SBRMI_x31(LSB)}. - */ - if (msg->read) { - for (i = 0; i < 4; i++) { - ret = i2c_smbus_read_byte_data(data->client, - SBRMI_OUTBNDMSG1 + i); - if (ret < 0) - goto exit_unlock; - msg->data_out |= ret << i * 8; - } - } - - /* - * BMC must write 1'b1 to SBRMI::Status[SwAlertSts] to clear the - * ALERT to initiator - */ - ret = i2c_smbus_write_byte_data(data->client, SBRMI_STATUS, - sw_status | SW_ALERT_MASK); - -exit_unlock: - mutex_unlock(&data->lock); - return ret; -} - -static int sbrmi_read(struct device *dev, enum hwmon_sensor_types type, - u32 attr, int channel, long *val) -{ - struct sbrmi_data *data = dev_get_drvdata(dev); - struct sbrmi_mailbox_msg msg = { 0 }; - int ret; - - if (type != hwmon_power) - return -EINVAL; - - msg.read = true; - switch (attr) { - case hwmon_power_input: - msg.cmd = SBRMI_READ_PKG_PWR_CONSUMPTION; - ret = rmi_mailbox_xfer(data, &msg); - break; - case hwmon_power_cap: - msg.cmd = SBRMI_READ_PKG_PWR_LIMIT; - ret = rmi_mailbox_xfer(data, &msg); - break; - case hwmon_power_cap_max: - msg.data_out = data->pwr_limit_max; - ret = 0; - break; - default: - return -EINVAL; - } - if (ret < 0) - return ret; - /* hwmon power attributes are in microWatt */ - *val = (long)msg.data_out * 1000; - return ret; -} - -static int sbrmi_write(struct device *dev, enum hwmon_sensor_types type, - u32 attr, int channel, long val) -{ - struct sbrmi_data *data = dev_get_drvdata(dev); - struct sbrmi_mailbox_msg msg = { 0 }; - - if (type != hwmon_power && attr != hwmon_power_cap) - return -EINVAL; - /* - * hwmon power attributes are in microWatt - * mailbox read/write is in mWatt - */ - val /= 1000; - - val = clamp_val(val, SBRMI_PWR_MIN, data->pwr_limit_max); - - msg.cmd = SBRMI_WRITE_PKG_PWR_LIMIT; - msg.data_in = val; - msg.read = false; - - return rmi_mailbox_xfer(data, &msg); -} - -static umode_t sbrmi_is_visible(const void *data, - enum hwmon_sensor_types type, - u32 attr, int channel) -{ - switch (type) { - case hwmon_power: - switch (attr) { - case hwmon_power_input: - case hwmon_power_cap_max: - return 0444; - case hwmon_power_cap: - return 0644; - } - break; - default: - break; - } - return 0; -} - -static const struct hwmon_channel_info * const sbrmi_info[] = { - HWMON_CHANNEL_INFO(power, - HWMON_P_INPUT | HWMON_P_CAP | HWMON_P_CAP_MAX), - NULL -}; - -static const struct hwmon_ops sbrmi_hwmon_ops = { - .is_visible = sbrmi_is_visible, - .read = sbrmi_read, - .write = sbrmi_write, -}; - -static const struct hwmon_chip_info sbrmi_chip_info = { - .ops = &sbrmi_hwmon_ops, - .info = sbrmi_info, -}; - -static int sbrmi_get_max_pwr_limit(struct sbrmi_data *data) -{ - struct sbrmi_mailbox_msg msg = { 0 }; - int ret; - - msg.cmd = SBRMI_READ_PKG_MAX_PWR_LIMIT; - msg.read = true; - ret = rmi_mailbox_xfer(data, &msg); - if (ret < 0) - return ret; - data->pwr_limit_max = msg.data_out; - - return ret; -} - -static int sbrmi_probe(struct i2c_client *client) -{ - struct device *dev = &client->dev; - struct device *hwmon_dev; - struct sbrmi_data *data; - int ret; - - data = devm_kzalloc(dev, sizeof(struct sbrmi_data), GFP_KERNEL); - if (!data) - return -ENOMEM; - - data->client = client; - mutex_init(&data->lock); - - /* Enable alert for SB-RMI sequence */ - ret = sbrmi_enable_alert(client); - if (ret < 0) - return ret; - - /* Cache maximum power limit */ - ret = sbrmi_get_max_pwr_limit(data); - if (ret < 0) - return ret; - - hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name, data, - &sbrmi_chip_info, NULL); - - return PTR_ERR_OR_ZERO(hwmon_dev); -} - -static const struct i2c_device_id sbrmi_id[] = { - {"sbrmi"}, - {} -}; -MODULE_DEVICE_TABLE(i2c, sbrmi_id); - -static const struct of_device_id __maybe_unused sbrmi_of_match[] = { - { - .compatible = "amd,sbrmi", - }, - { }, -}; -MODULE_DEVICE_TABLE(of, sbrmi_of_match); - -static struct i2c_driver sbrmi_driver = { - .driver = { - .name = "sbrmi", - .of_match_table = of_match_ptr(sbrmi_of_match), - }, - .probe = sbrmi_probe, - .id_table = sbrmi_id, -}; - -module_i2c_driver(sbrmi_driver); - -MODULE_AUTHOR("Akshay Gupta "); -MODULE_DESCRIPTION("Hwmon driver for AMD SB-RMI emulated sensor"); -MODULE_LICENSE("GPL"); -- cgit v1.2.3 From f4dc6406631ec46f608be7078f50777990c87b47 Mon Sep 17 00:00:00 2001 From: Akshay Gupta Date: Mon, 28 Apr 2025 06:30:27 +0000 Subject: misc: amd-sbi: Move hwmon device sensor as separate entity - Move hwmon device sensor to misc as only power is reported through hwmon sensor. Reviewed-by: Naveen Krishna Chatradhi Signed-off-by: Akshay Gupta Link: https://lore.kernel.org/r/20250428063034.2145566-4-akshay.gupta@amd.com Signed-off-by: Greg Kroah-Hartman --- drivers/misc/amd-sbi/Kconfig | 10 +++- drivers/misc/amd-sbi/Makefile | 3 +- drivers/misc/amd-sbi/rmi-core.h | 8 +++ drivers/misc/amd-sbi/rmi-hwmon.c | 121 +++++++++++++++++++++++++++++++++++++++ drivers/misc/amd-sbi/rmi-i2c.c | 104 +-------------------------------- 5 files changed, 142 insertions(+), 104 deletions(-) create mode 100644 drivers/misc/amd-sbi/rmi-hwmon.c diff --git a/drivers/misc/amd-sbi/Kconfig b/drivers/misc/amd-sbi/Kconfig index 0c8981f97f25..4840831c84ca 100644 --- a/drivers/misc/amd-sbi/Kconfig +++ b/drivers/misc/amd-sbi/Kconfig @@ -2,9 +2,17 @@ config AMD_SBRMI_I2C tristate "AMD side band RMI support" depends on I2C - depends on HWMON help Side band RMI over I2C support for AMD out of band management. This driver can also be built as a module. If so, the module will be called sbrmi-i2c. + +config AMD_SBRMI_HWMON + bool "SBRMI hardware monitoring" + depends on AMD_SBRMI_I2C && HWMON + depends on !(AMD_SBRMI_I2C=y && HWMON=m) + help + This provides support for RMI device hardware monitoring. If enabled, + a hardware monitoring device will be created for each socket in + the system. diff --git a/drivers/misc/amd-sbi/Makefile b/drivers/misc/amd-sbi/Makefile index 7cd8e0a1aa5d..38eaaa651fd9 100644 --- a/drivers/misc/amd-sbi/Makefile +++ b/drivers/misc/amd-sbi/Makefile @@ -1,3 +1,4 @@ # SPDX-License-Identifier: GPL-2.0-only -sbrmi-i2c-objs := rmi-i2c.o rmi-core.o +sbrmi-i2c-objs += rmi-i2c.o rmi-core.o +sbrmi-i2c-$(CONFIG_AMD_SBRMI_HWMON) += rmi-hwmon.o obj-$(CONFIG_AMD_SBRMI_I2C) += sbrmi-i2c.o diff --git a/drivers/misc/amd-sbi/rmi-core.h b/drivers/misc/amd-sbi/rmi-core.h index 8e30a43ec714..977ee05af6a6 100644 --- a/drivers/misc/amd-sbi/rmi-core.h +++ b/drivers/misc/amd-sbi/rmi-core.h @@ -60,4 +60,12 @@ struct sbrmi_mailbox_msg { }; int rmi_mailbox_xfer(struct sbrmi_data *data, struct sbrmi_mailbox_msg *msg); +#ifdef CONFIG_AMD_SBRMI_HWMON +int create_hwmon_sensor_device(struct device *dev, struct sbrmi_data *data); +#else +static inline int create_hwmon_sensor_device(struct device *dev, struct sbrmi_data *data) +{ + return 0; +} +#endif #endif /*_SBRMI_CORE_H_*/ diff --git a/drivers/misc/amd-sbi/rmi-hwmon.c b/drivers/misc/amd-sbi/rmi-hwmon.c new file mode 100644 index 000000000000..720e800db1f0 --- /dev/null +++ b/drivers/misc/amd-sbi/rmi-hwmon.c @@ -0,0 +1,121 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * rmi-hwmon.c - hwmon sensor support for side band RMI + * + * Copyright (C) 2025 Advanced Micro Devices, Inc. + */ +#include +#include +#include "rmi-core.h" + +/* Do not allow setting negative power limit */ +#define SBRMI_PWR_MIN 0 + +static int sbrmi_read(struct device *dev, enum hwmon_sensor_types type, + u32 attr, int channel, long *val) +{ + struct sbrmi_data *data = dev_get_drvdata(dev); + struct sbrmi_mailbox_msg msg = { 0 }; + int ret; + + if (!data) + return -ENODEV; + + if (type != hwmon_power) + return -EINVAL; + + msg.read = true; + switch (attr) { + case hwmon_power_input: + msg.cmd = SBRMI_READ_PKG_PWR_CONSUMPTION; + ret = rmi_mailbox_xfer(data, &msg); + break; + case hwmon_power_cap: + msg.cmd = SBRMI_READ_PKG_PWR_LIMIT; + ret = rmi_mailbox_xfer(data, &msg); + break; + case hwmon_power_cap_max: + msg.data_out = data->pwr_limit_max; + ret = 0; + break; + default: + return -EINVAL; + } + if (ret < 0) + return ret; + /* hwmon power attributes are in microWatt */ + *val = (long)msg.data_out * 1000; + return ret; +} + +static int sbrmi_write(struct device *dev, enum hwmon_sensor_types type, + u32 attr, int channel, long val) +{ + struct sbrmi_data *data = dev_get_drvdata(dev); + struct sbrmi_mailbox_msg msg = { 0 }; + + if (!data) + return -ENODEV; + + if (type != hwmon_power && attr != hwmon_power_cap) + return -EINVAL; + /* + * hwmon power attributes are in microWatt + * mailbox read/write is in mWatt + */ + val /= 1000; + + val = clamp_val(val, SBRMI_PWR_MIN, data->pwr_limit_max); + + msg.cmd = SBRMI_WRITE_PKG_PWR_LIMIT; + msg.data_in = val; + msg.read = false; + + return rmi_mailbox_xfer(data, &msg); +} + +static umode_t sbrmi_is_visible(const void *data, + enum hwmon_sensor_types type, + u32 attr, int channel) +{ + switch (type) { + case hwmon_power: + switch (attr) { + case hwmon_power_input: + case hwmon_power_cap_max: + return 0444; + case hwmon_power_cap: + return 0644; + } + break; + default: + break; + } + return 0; +} + +static const struct hwmon_channel_info * const sbrmi_info[] = { + HWMON_CHANNEL_INFO(power, + HWMON_P_INPUT | HWMON_P_CAP | HWMON_P_CAP_MAX), + NULL +}; + +static const struct hwmon_ops sbrmi_hwmon_ops = { + .is_visible = sbrmi_is_visible, + .read = sbrmi_read, + .write = sbrmi_write, +}; + +static const struct hwmon_chip_info sbrmi_chip_info = { + .ops = &sbrmi_hwmon_ops, + .info = sbrmi_info, +}; + +int create_hwmon_sensor_device(struct device *dev, struct sbrmi_data *data) +{ + struct device *hwmon_dev; + + hwmon_dev = devm_hwmon_device_register_with_info(dev, "sbrmi", data, + &sbrmi_chip_info, NULL); + return PTR_ERR_OR_ZERO(hwmon_dev); +} diff --git a/drivers/misc/amd-sbi/rmi-i2c.c b/drivers/misc/amd-sbi/rmi-i2c.c index 6412f00eb381..9ad4c8093399 100644 --- a/drivers/misc/amd-sbi/rmi-i2c.c +++ b/drivers/misc/amd-sbi/rmi-i2c.c @@ -8,7 +8,6 @@ #include #include -#include #include #include #include @@ -16,9 +15,6 @@ #include #include "rmi-core.h" -/* Do not allow setting negative power limit */ -#define SBRMI_PWR_MIN 0 - static int sbrmi_enable_alert(struct i2c_client *client) { int ctrl; @@ -40,100 +36,6 @@ static int sbrmi_enable_alert(struct i2c_client *client) return 0; } -static int sbrmi_read(struct device *dev, enum hwmon_sensor_types type, - u32 attr, int channel, long *val) -{ - struct sbrmi_data *data = dev_get_drvdata(dev); - struct sbrmi_mailbox_msg msg = { 0 }; - int ret; - - if (type != hwmon_power) - return -EINVAL; - - msg.read = true; - switch (attr) { - case hwmon_power_input: - msg.cmd = SBRMI_READ_PKG_PWR_CONSUMPTION; - ret = rmi_mailbox_xfer(data, &msg); - break; - case hwmon_power_cap: - msg.cmd = SBRMI_READ_PKG_PWR_LIMIT; - ret = rmi_mailbox_xfer(data, &msg); - break; - case hwmon_power_cap_max: - msg.data_out = data->pwr_limit_max; - ret = 0; - break; - default: - return -EINVAL; - } - if (ret < 0) - return ret; - /* hwmon power attributes are in microWatt */ - *val = (long)msg.data_out * 1000; - return ret; -} - -static int sbrmi_write(struct device *dev, enum hwmon_sensor_types type, - u32 attr, int channel, long val) -{ - struct sbrmi_data *data = dev_get_drvdata(dev); - struct sbrmi_mailbox_msg msg = { 0 }; - - if (type != hwmon_power && attr != hwmon_power_cap) - return -EINVAL; - /* - * hwmon power attributes are in microWatt - * mailbox read/write is in mWatt - */ - val /= 1000; - - val = clamp_val(val, SBRMI_PWR_MIN, data->pwr_limit_max); - - msg.cmd = SBRMI_WRITE_PKG_PWR_LIMIT; - msg.data_in = val; - msg.read = false; - - return rmi_mailbox_xfer(data, &msg); -} - -static umode_t sbrmi_is_visible(const void *data, - enum hwmon_sensor_types type, - u32 attr, int channel) -{ - switch (type) { - case hwmon_power: - switch (attr) { - case hwmon_power_input: - case hwmon_power_cap_max: - return 0444; - case hwmon_power_cap: - return 0644; - } - break; - default: - break; - } - return 0; -} - -static const struct hwmon_channel_info * const sbrmi_info[] = { - HWMON_CHANNEL_INFO(power, - HWMON_P_INPUT | HWMON_P_CAP | HWMON_P_CAP_MAX), - NULL -}; - -static const struct hwmon_ops sbrmi_hwmon_ops = { - .is_visible = sbrmi_is_visible, - .read = sbrmi_read, - .write = sbrmi_write, -}; - -static const struct hwmon_chip_info sbrmi_chip_info = { - .ops = &sbrmi_hwmon_ops, - .info = sbrmi_info, -}; - static int sbrmi_get_max_pwr_limit(struct sbrmi_data *data) { struct sbrmi_mailbox_msg msg = { 0 }; @@ -152,7 +54,6 @@ static int sbrmi_get_max_pwr_limit(struct sbrmi_data *data) static int sbrmi_i2c_probe(struct i2c_client *client) { struct device *dev = &client->dev; - struct device *hwmon_dev; struct sbrmi_data *data; int ret; @@ -173,9 +74,8 @@ static int sbrmi_i2c_probe(struct i2c_client *client) if (ret < 0) return ret; - hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name, data, - &sbrmi_chip_info, NULL); - return PTR_ERR_OR_ZERO(hwmon_dev); + dev_set_drvdata(dev, data); + return create_hwmon_sensor_device(dev, data); } static const struct i2c_device_id sbrmi_id[] = { -- cgit v1.2.3 From 013f7e7131bd84a83ed3b70855b2667a89bb3c98 Mon Sep 17 00:00:00 2001 From: Akshay Gupta Date: Mon, 28 Apr 2025 06:30:28 +0000 Subject: misc: amd-sbi: Use regmap subsystem - regmap subsystem provides multiple benefits over direct smbus APIs - subsystem adds another abstraction layer on top of struct i2c_client to make it easy to read or write registers. - The subsystem can be helpful in following cases - Different types of bus (i2c/i3c), we have plans to support i3c. - Different Register address size (1byte/2byte) Reviewed-by: Naveen Krishna Chatradhi Signed-off-by: Akshay Gupta Link: https://lore.kernel.org/r/20250428063034.2145566-5-akshay.gupta@amd.com Signed-off-by: Greg Kroah-Hartman --- drivers/misc/amd-sbi/rmi-core.c | 29 ++++++++++++----------------- drivers/misc/amd-sbi/rmi-core.h | 3 ++- drivers/misc/amd-sbi/rmi-i2c.c | 25 ++++++++++++++++--------- 3 files changed, 30 insertions(+), 27 deletions(-) diff --git a/drivers/misc/amd-sbi/rmi-core.c b/drivers/misc/amd-sbi/rmi-core.c index 74456756270c..663ab9176d95 100644 --- a/drivers/misc/amd-sbi/rmi-core.c +++ b/drivers/misc/amd-sbi/rmi-core.c @@ -9,6 +9,7 @@ #include #include #include +#include #include "rmi-core.h" /* Mask for Status Register bit[1] */ @@ -21,6 +22,7 @@ int rmi_mailbox_xfer(struct sbrmi_data *data, struct sbrmi_mailbox_msg *msg) { + unsigned int bytes; int i, ret, retry = 10; int sw_status; u8 byte; @@ -28,14 +30,12 @@ int rmi_mailbox_xfer(struct sbrmi_data *data, mutex_lock(&data->lock); /* Indicate firmware a command is to be serviced */ - ret = i2c_smbus_write_byte_data(data->client, - SBRMI_INBNDMSG7, START_CMD); + ret = regmap_write(data->regmap, SBRMI_INBNDMSG7, START_CMD); if (ret < 0) goto exit_unlock; /* Write the command to SBRMI::InBndMsg_inst0 */ - ret = i2c_smbus_write_byte_data(data->client, - SBRMI_INBNDMSG0, msg->cmd); + ret = regmap_write(data->regmap, SBRMI_INBNDMSG0, msg->cmd); if (ret < 0) goto exit_unlock; @@ -46,8 +46,7 @@ int rmi_mailbox_xfer(struct sbrmi_data *data, */ for (i = 0; i < 4; i++) { byte = (msg->data_in >> i * 8) & 0xff; - ret = i2c_smbus_write_byte_data(data->client, - SBRMI_INBNDMSG1 + i, byte); + ret = regmap_write(data->regmap, SBRMI_INBNDMSG1 + i, byte); if (ret < 0) goto exit_unlock; } @@ -56,8 +55,7 @@ int rmi_mailbox_xfer(struct sbrmi_data *data, * Write 0x01 to SBRMI::SoftwareInterrupt to notify firmware to * perform the requested read or write command */ - ret = i2c_smbus_write_byte_data(data->client, - SBRMI_SW_INTERRUPT, TRIGGER_MAILBOX); + ret = regmap_write(data->regmap, SBRMI_SW_INTERRUPT, TRIGGER_MAILBOX); if (ret < 0) goto exit_unlock; @@ -67,8 +65,7 @@ int rmi_mailbox_xfer(struct sbrmi_data *data, * of the requested command */ do { - sw_status = i2c_smbus_read_byte_data(data->client, - SBRMI_STATUS); + ret = regmap_read(data->regmap, SBRMI_STATUS, &sw_status); if (sw_status < 0) { ret = sw_status; goto exit_unlock; @@ -79,8 +76,6 @@ int rmi_mailbox_xfer(struct sbrmi_data *data, } while (retry--); if (retry < 0) { - dev_err(&data->client->dev, - "Firmware fail to indicate command completion\n"); ret = -EIO; goto exit_unlock; } @@ -92,11 +87,11 @@ int rmi_mailbox_xfer(struct sbrmi_data *data, */ if (msg->read) { for (i = 0; i < 4; i++) { - ret = i2c_smbus_read_byte_data(data->client, - SBRMI_OUTBNDMSG1 + i); + ret = regmap_read(data->regmap, + SBRMI_OUTBNDMSG1 + i, &bytes); if (ret < 0) goto exit_unlock; - msg->data_out |= ret << i * 8; + msg->data_out |= bytes << i * 8; } } @@ -104,8 +99,8 @@ int rmi_mailbox_xfer(struct sbrmi_data *data, * BMC must write 1'b1 to SBRMI::Status[SwAlertSts] to clear the * ALERT to initiator */ - ret = i2c_smbus_write_byte_data(data->client, SBRMI_STATUS, - sw_status | SW_ALERT_MASK); + ret = regmap_write(data->regmap, SBRMI_STATUS, + sw_status | SW_ALERT_MASK); exit_unlock: mutex_unlock(&data->lock); diff --git a/drivers/misc/amd-sbi/rmi-core.h b/drivers/misc/amd-sbi/rmi-core.h index 977ee05af6a6..3a6028306d10 100644 --- a/drivers/misc/amd-sbi/rmi-core.h +++ b/drivers/misc/amd-sbi/rmi-core.h @@ -9,6 +9,7 @@ #include #include #include +#include /* SB-RMI registers */ enum sbrmi_reg { @@ -47,7 +48,7 @@ enum sbrmi_msg_id { /* Each client has this additional data */ struct sbrmi_data { - struct i2c_client *client; + struct regmap *regmap; struct mutex lock; u32 pwr_limit_max; }; diff --git a/drivers/misc/amd-sbi/rmi-i2c.c b/drivers/misc/amd-sbi/rmi-i2c.c index 9ad4c8093399..7a9801273a4c 100644 --- a/drivers/misc/amd-sbi/rmi-i2c.c +++ b/drivers/misc/amd-sbi/rmi-i2c.c @@ -13,24 +13,24 @@ #include #include #include +#include #include "rmi-core.h" -static int sbrmi_enable_alert(struct i2c_client *client) +static int sbrmi_enable_alert(struct sbrmi_data *data) { - int ctrl; + int ctrl, ret; /* * Enable the SB-RMI Software alert status * by writing 0 to bit 4 of Control register(0x1) */ - ctrl = i2c_smbus_read_byte_data(client, SBRMI_CTRL); - if (ctrl < 0) - return ctrl; + ret = regmap_read(data->regmap, SBRMI_CTRL, &ctrl); + if (ret < 0) + return ret; if (ctrl & 0x10) { ctrl &= ~0x10; - return i2c_smbus_write_byte_data(client, - SBRMI_CTRL, ctrl); + return regmap_write(data->regmap, SBRMI_CTRL, ctrl); } return 0; @@ -55,17 +55,24 @@ static int sbrmi_i2c_probe(struct i2c_client *client) { struct device *dev = &client->dev; struct sbrmi_data *data; + struct regmap_config sbrmi_i2c_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + }; int ret; data = devm_kzalloc(dev, sizeof(struct sbrmi_data), GFP_KERNEL); if (!data) return -ENOMEM; - data->client = client; mutex_init(&data->lock); + data->regmap = devm_regmap_init_i2c(client, &sbrmi_i2c_regmap_config); + if (IS_ERR(data->regmap)) + return PTR_ERR(data->regmap); + /* Enable alert for SB-RMI sequence */ - ret = sbrmi_enable_alert(client); + ret = sbrmi_enable_alert(data); if (ret < 0) return ret; -- cgit v1.2.3 From 587d2c625146c7ff62325ebb9a8668e666400dc4 Mon Sep 17 00:00:00 2001 From: Akshay Gupta Date: Mon, 28 Apr 2025 06:30:29 +0000 Subject: misc: amd-sbi: Optimize the wait condition for mailbox command completion - optimize the wait condition to indicate command completion by replacing the do while loop with regmap subsystem API regmap_read_poll_timeout() Reviewed-by: Naveen Krishna Chatradhi Signed-off-by: Akshay Gupta Link: https://lore.kernel.org/r/20250428063034.2145566-6-akshay.gupta@amd.com Signed-off-by: Greg Kroah-Hartman --- drivers/misc/amd-sbi/rmi-core.c | 19 ++++--------------- 1 file changed, 4 insertions(+), 15 deletions(-) diff --git a/drivers/misc/amd-sbi/rmi-core.c b/drivers/misc/amd-sbi/rmi-core.c index 663ab9176d95..1d5e2556ab88 100644 --- a/drivers/misc/amd-sbi/rmi-core.c +++ b/drivers/misc/amd-sbi/rmi-core.c @@ -23,7 +23,7 @@ int rmi_mailbox_xfer(struct sbrmi_data *data, struct sbrmi_mailbox_msg *msg) { unsigned int bytes; - int i, ret, retry = 10; + int i, ret; int sw_status; u8 byte; @@ -64,21 +64,10 @@ int rmi_mailbox_xfer(struct sbrmi_data *data, * an ALERT (if enabled) to initiator (BMC) to indicate completion * of the requested command */ - do { - ret = regmap_read(data->regmap, SBRMI_STATUS, &sw_status); - if (sw_status < 0) { - ret = sw_status; - goto exit_unlock; - } - if (sw_status & SW_ALERT_MASK) - break; - usleep_range(50, 100); - } while (retry--); - - if (retry < 0) { - ret = -EIO; + ret = regmap_read_poll_timeout(data->regmap, SBRMI_STATUS, sw_status, + sw_status & SW_ALERT_MASK, 500, 2000000); + if (ret) goto exit_unlock; - } /* * For a read operation, the initiator (BMC) reads the firmware -- cgit v1.2.3 From 35ac2034db72bbbc73609aab5f05ff6e0d38fdd0 Mon Sep 17 00:00:00 2001 From: Akshay Gupta Date: Mon, 28 Apr 2025 06:30:30 +0000 Subject: misc: amd-sbi: Add support for AMD_SBI IOCTL The present sbrmi module only support reporting power via hwmon. However, AMD data center range of processors support various system management functionality using custom protocols defined in Advanced Platform Management Link (APML) specification. Register a miscdevice, which creates a device /dev/sbrmiX with an IOCTL interface for the user space to invoke the APML Mailbox protocol, which is already defined in sbrmi_mailbox_xfer(). The APML protocols depend on a set of RMI registers. Having an IOCTL as a single entry point will help in providing synchronization among these protocols as multiple transactions on RMI register set may create race condition. Support for other protocols will be added in subsequent patches. APML mailbox protocol returns additional error codes written by SMU firmware in the out-bound register 0x37. These errors include, invalid core, message not supported over platform and others. This additional error codes can be used to provide more details to user space. Open-sourced and widely used https://github.com/amd/esmi_oob_library will continue to provide user-space programmable API. Reviewed-by: Naveen Krishna Chatradhi Signed-off-by: Akshay Gupta Link: https://lore.kernel.org/r/20250428063034.2145566-7-akshay.gupta@amd.com Signed-off-by: Greg Kroah-Hartman --- Documentation/misc-devices/index.rst | 1 + Documentation/userspace-api/ioctl/ioctl-number.rst | 2 + drivers/misc/amd-sbi/rmi-core.c | 92 +++++++++++++++++++--- drivers/misc/amd-sbi/rmi-core.h | 15 ++-- drivers/misc/amd-sbi/rmi-hwmon.c | 13 ++- drivers/misc/amd-sbi/rmi-i2c.c | 25 +++++- include/uapi/misc/amd-apml.h | 51 ++++++++++++ 7 files changed, 167 insertions(+), 32 deletions(-) create mode 100644 include/uapi/misc/amd-apml.h diff --git a/Documentation/misc-devices/index.rst b/Documentation/misc-devices/index.rst index 8c5b226d8313..081e79415e38 100644 --- a/Documentation/misc-devices/index.rst +++ b/Documentation/misc-devices/index.rst @@ -12,6 +12,7 @@ fit into other categories. :maxdepth: 2 ad525x_dpot + amd-sbi apds990x bh1770glc c2port diff --git a/Documentation/userspace-api/ioctl/ioctl-number.rst b/Documentation/userspace-api/ioctl/ioctl-number.rst index 7a1409ecc238..3191d96ea4da 100644 --- a/Documentation/userspace-api/ioctl/ioctl-number.rst +++ b/Documentation/userspace-api/ioctl/ioctl-number.rst @@ -397,6 +397,8 @@ Code Seq# Include File Comments 0xF8 all arch/x86/include/uapi/asm/amd_hsmp.h AMD HSMP EPYC system management interface driver +0xF9 00-0F uapi/misc/amd-apml.h AMD side band system management interface driver + 0xFD all linux/dm-ioctl.h 0xFE all linux/isst_if.h ==== ===== ======================================================= ================================================================ diff --git a/drivers/misc/amd-sbi/rmi-core.c b/drivers/misc/amd-sbi/rmi-core.c index 1d5e2556ab88..7d13c049c98d 100644 --- a/drivers/misc/amd-sbi/rmi-core.c +++ b/drivers/misc/amd-sbi/rmi-core.c @@ -7,7 +7,10 @@ */ #include #include +#include #include +#include +#include #include #include #include "rmi-core.h" @@ -20,15 +23,17 @@ #define TRIGGER_MAILBOX 0x01 int rmi_mailbox_xfer(struct sbrmi_data *data, - struct sbrmi_mailbox_msg *msg) + struct apml_mbox_msg *msg) { - unsigned int bytes; + unsigned int bytes, ec; int i, ret; int sw_status; u8 byte; mutex_lock(&data->lock); + msg->fw_ret_code = 0; + /* Indicate firmware a command is to be serviced */ ret = regmap_write(data->regmap, SBRMI_INBNDMSG7, START_CMD); if (ret < 0) @@ -44,8 +49,8 @@ int rmi_mailbox_xfer(struct sbrmi_data *data, * Command Data In[31:0] to SBRMI::InBndMsg_inst[4:1] * SBRMI_x3C(MSB):SBRMI_x39(LSB) */ - for (i = 0; i < 4; i++) { - byte = (msg->data_in >> i * 8) & 0xff; + for (i = 0; i < AMD_SBI_MB_DATA_SIZE; i++) { + byte = (msg->mb_in_out >> i * 8) & 0xff; ret = regmap_write(data->regmap, SBRMI_INBNDMSG1 + i, byte); if (ret < 0) goto exit_unlock; @@ -69,29 +74,90 @@ int rmi_mailbox_xfer(struct sbrmi_data *data, if (ret) goto exit_unlock; + ret = regmap_read(data->regmap, SBRMI_OUTBNDMSG7, &ec); + if (ret || ec) + goto exit_clear_alert; /* * For a read operation, the initiator (BMC) reads the firmware * response Command Data Out[31:0] from SBRMI::OutBndMsg_inst[4:1] * {SBRMI_x34(MSB):SBRMI_x31(LSB)}. */ - if (msg->read) { - for (i = 0; i < 4; i++) { - ret = regmap_read(data->regmap, - SBRMI_OUTBNDMSG1 + i, &bytes); - if (ret < 0) - goto exit_unlock; - msg->data_out |= bytes << i * 8; - } + for (i = 0; i < AMD_SBI_MB_DATA_SIZE; i++) { + ret = regmap_read(data->regmap, + SBRMI_OUTBNDMSG1 + i, &bytes); + if (ret < 0) + break; + msg->mb_in_out |= bytes << i * 8; } +exit_clear_alert: /* * BMC must write 1'b1 to SBRMI::Status[SwAlertSts] to clear the * ALERT to initiator */ ret = regmap_write(data->regmap, SBRMI_STATUS, sw_status | SW_ALERT_MASK); - + if (ec) { + ret = -EPROTOTYPE; + msg->fw_ret_code = ec; + } exit_unlock: mutex_unlock(&data->lock); return ret; } + +static int apml_mailbox_xfer(struct sbrmi_data *data, struct apml_mbox_msg __user *arg) +{ + struct apml_mbox_msg msg = { 0 }; + int ret; + + /* Copy the structure from user */ + if (copy_from_user(&msg, arg, sizeof(struct apml_mbox_msg))) + return -EFAULT; + + /* Mailbox protocol */ + ret = rmi_mailbox_xfer(data, &msg); + if (ret && ret != -EPROTOTYPE) + return ret; + + return copy_to_user(arg, &msg, sizeof(struct apml_mbox_msg)); +} + +static long sbrmi_ioctl(struct file *fp, unsigned int cmd, unsigned long arg) +{ + void __user *argp = (void __user *)arg; + struct sbrmi_data *data; + + data = container_of(fp->private_data, struct sbrmi_data, sbrmi_misc_dev); + switch (cmd) { + case SBRMI_IOCTL_MBOX_CMD: + return apml_mailbox_xfer(data, argp); + default: + return -ENOTTY; + } +} + +static const struct file_operations sbrmi_fops = { + .owner = THIS_MODULE, + .unlocked_ioctl = sbrmi_ioctl, + .compat_ioctl = compat_ptr_ioctl, +}; + +int create_misc_rmi_device(struct sbrmi_data *data, + struct device *dev) +{ + data->sbrmi_misc_dev.name = devm_kasprintf(dev, + GFP_KERNEL, + "sbrmi-%x", + data->dev_static_addr); + data->sbrmi_misc_dev.minor = MISC_DYNAMIC_MINOR; + data->sbrmi_misc_dev.fops = &sbrmi_fops; + data->sbrmi_misc_dev.parent = dev; + data->sbrmi_misc_dev.nodename = devm_kasprintf(dev, + GFP_KERNEL, + "sbrmi-%x", + data->dev_static_addr); + data->sbrmi_misc_dev.mode = 0600; + + return misc_register(&data->sbrmi_misc_dev); +} diff --git a/drivers/misc/amd-sbi/rmi-core.h b/drivers/misc/amd-sbi/rmi-core.h index 3a6028306d10..8ab31c6852d1 100644 --- a/drivers/misc/amd-sbi/rmi-core.h +++ b/drivers/misc/amd-sbi/rmi-core.h @@ -6,10 +6,12 @@ #ifndef _SBRMI_CORE_H_ #define _SBRMI_CORE_H_ +#include #include #include #include #include +#include /* SB-RMI registers */ enum sbrmi_reg { @@ -48,19 +50,15 @@ enum sbrmi_msg_id { /* Each client has this additional data */ struct sbrmi_data { + struct miscdevice sbrmi_misc_dev; struct regmap *regmap; + /* Mutex locking */ struct mutex lock; u32 pwr_limit_max; + u8 dev_static_addr; }; -struct sbrmi_mailbox_msg { - u8 cmd; - bool read; - u32 data_in; - u32 data_out; -}; - -int rmi_mailbox_xfer(struct sbrmi_data *data, struct sbrmi_mailbox_msg *msg); +int rmi_mailbox_xfer(struct sbrmi_data *data, struct apml_mbox_msg *msg); #ifdef CONFIG_AMD_SBRMI_HWMON int create_hwmon_sensor_device(struct device *dev, struct sbrmi_data *data); #else @@ -69,4 +67,5 @@ static inline int create_hwmon_sensor_device(struct device *dev, struct sbrmi_da return 0; } #endif +int create_misc_rmi_device(struct sbrmi_data *data, struct device *dev); #endif /*_SBRMI_CORE_H_*/ diff --git a/drivers/misc/amd-sbi/rmi-hwmon.c b/drivers/misc/amd-sbi/rmi-hwmon.c index 720e800db1f0..f4f015605daa 100644 --- a/drivers/misc/amd-sbi/rmi-hwmon.c +++ b/drivers/misc/amd-sbi/rmi-hwmon.c @@ -6,6 +6,7 @@ */ #include #include +#include #include "rmi-core.h" /* Do not allow setting negative power limit */ @@ -15,7 +16,7 @@ static int sbrmi_read(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel, long *val) { struct sbrmi_data *data = dev_get_drvdata(dev); - struct sbrmi_mailbox_msg msg = { 0 }; + struct apml_mbox_msg msg = { 0 }; int ret; if (!data) @@ -24,7 +25,6 @@ static int sbrmi_read(struct device *dev, enum hwmon_sensor_types type, if (type != hwmon_power) return -EINVAL; - msg.read = true; switch (attr) { case hwmon_power_input: msg.cmd = SBRMI_READ_PKG_PWR_CONSUMPTION; @@ -35,7 +35,7 @@ static int sbrmi_read(struct device *dev, enum hwmon_sensor_types type, ret = rmi_mailbox_xfer(data, &msg); break; case hwmon_power_cap_max: - msg.data_out = data->pwr_limit_max; + msg.mb_in_out = data->pwr_limit_max; ret = 0; break; default: @@ -44,7 +44,7 @@ static int sbrmi_read(struct device *dev, enum hwmon_sensor_types type, if (ret < 0) return ret; /* hwmon power attributes are in microWatt */ - *val = (long)msg.data_out * 1000; + *val = (long)msg.mb_in_out * 1000; return ret; } @@ -52,7 +52,7 @@ static int sbrmi_write(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel, long val) { struct sbrmi_data *data = dev_get_drvdata(dev); - struct sbrmi_mailbox_msg msg = { 0 }; + struct apml_mbox_msg msg = { 0 }; if (!data) return -ENODEV; @@ -68,8 +68,7 @@ static int sbrmi_write(struct device *dev, enum hwmon_sensor_types type, val = clamp_val(val, SBRMI_PWR_MIN, data->pwr_limit_max); msg.cmd = SBRMI_WRITE_PKG_PWR_LIMIT; - msg.data_in = val; - msg.read = false; + msg.mb_in_out = val; return rmi_mailbox_xfer(data, &msg); } diff --git a/drivers/misc/amd-sbi/rmi-i2c.c b/drivers/misc/amd-sbi/rmi-i2c.c index 7a9801273a4c..f891f5af4bc6 100644 --- a/drivers/misc/amd-sbi/rmi-i2c.c +++ b/drivers/misc/amd-sbi/rmi-i2c.c @@ -38,15 +38,14 @@ static int sbrmi_enable_alert(struct sbrmi_data *data) static int sbrmi_get_max_pwr_limit(struct sbrmi_data *data) { - struct sbrmi_mailbox_msg msg = { 0 }; + struct apml_mbox_msg msg = { 0 }; int ret; msg.cmd = SBRMI_READ_PKG_MAX_PWR_LIMIT; - msg.read = true; ret = rmi_mailbox_xfer(data, &msg); if (ret < 0) return ret; - data->pwr_limit_max = msg.data_out; + data->pwr_limit_max = msg.mb_in_out; return ret; } @@ -81,8 +80,25 @@ static int sbrmi_i2c_probe(struct i2c_client *client) if (ret < 0) return ret; + data->dev_static_addr = client->addr; dev_set_drvdata(dev, data); - return create_hwmon_sensor_device(dev, data); + + ret = create_hwmon_sensor_device(dev, data); + if (ret < 0) + return ret; + return create_misc_rmi_device(data, dev); +} + +static void sbrmi_i2c_remove(struct i2c_client *client) +{ + struct sbrmi_data *data = dev_get_drvdata(&client->dev); + + misc_deregister(&data->sbrmi_misc_dev); + /* Assign fops and parent of misc dev to NULL */ + data->sbrmi_misc_dev.fops = NULL; + data->sbrmi_misc_dev.parent = NULL; + dev_info(&client->dev, "Removed sbrmi-i2c driver\n"); + return; } static const struct i2c_device_id sbrmi_id[] = { @@ -105,6 +121,7 @@ static struct i2c_driver sbrmi_driver = { .of_match_table = of_match_ptr(sbrmi_of_match), }, .probe = sbrmi_i2c_probe, + .remove = sbrmi_i2c_remove, .id_table = sbrmi_id, }; diff --git a/include/uapi/misc/amd-apml.h b/include/uapi/misc/amd-apml.h new file mode 100644 index 000000000000..a5f086f84b06 --- /dev/null +++ b/include/uapi/misc/amd-apml.h @@ -0,0 +1,51 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +/* + * Copyright (C) 2021-2024 Advanced Micro Devices, Inc. + */ +#ifndef _AMD_APML_H_ +#define _AMD_APML_H_ + +#include + +/* Mailbox data size for data_in and data_out */ +#define AMD_SBI_MB_DATA_SIZE 4 + +struct apml_mbox_msg { + /* + * Mailbox Message ID + */ + __u32 cmd; + /* + * [0]...[3] mailbox 32bit input/output data + */ + __u32 mb_in_out; + /* + * Error code is returned in case of soft mailbox error + */ + __u32 fw_ret_code; +}; + +/* + * AMD sideband interface base IOCTL + */ +#define SB_BASE_IOCTL_NR 0xF9 + +/** + * DOC: SBRMI_IOCTL_MBOX_CMD + * + * @Parameters + * + * @struct apml_mbox_msg + * Pointer to the &struct apml_mbox_msg that will contain the protocol + * information + * + * @Description + * IOCTL command for APML messages using generic _IOWR + * The IOCTL provides userspace access to AMD sideband mailbox protocol + * - Mailbox message read/write(0x0~0xFF) + * - returning "-EFAULT" if none of the above + * "-EPROTOTYPE" error is returned to provide additional error details + */ +#define SBRMI_IOCTL_MBOX_CMD _IOWR(SB_BASE_IOCTL_NR, 0, struct apml_mbox_msg) + +#endif /*_AMD_APML_H_*/ -- cgit v1.2.3 From bb13a84ed6b78200952b264b4d7a024b730e8246 Mon Sep 17 00:00:00 2001 From: Akshay Gupta Date: Mon, 28 Apr 2025 06:30:31 +0000 Subject: misc: amd-sbi: Add support for CPUID protocol - AMD provides custom protocol to read Processor feature capabilities and configuration information through side band. The information is accessed by providing CPUID Function, extended function and thread ID to the protocol. Undefined function returns 0. Reviewed-by: Naveen Krishna Chatradhi Signed-off-by: Akshay Gupta Link: https://lore.kernel.org/r/20250428063034.2145566-8-akshay.gupta@amd.com Signed-off-by: Greg Kroah-Hartman --- drivers/misc/amd-sbi/rmi-core.c | 168 ++++++++++++++++++++++++++++++++++++++++ drivers/misc/amd-sbi/rmi-core.h | 5 +- include/uapi/misc/amd-apml.h | 37 +++++++++ 3 files changed, 209 insertions(+), 1 deletion(-) diff --git a/drivers/misc/amd-sbi/rmi-core.c b/drivers/misc/amd-sbi/rmi-core.c index 7d13c049c98d..471f50f0c368 100644 --- a/drivers/misc/amd-sbi/rmi-core.c +++ b/drivers/misc/amd-sbi/rmi-core.c @@ -17,11 +17,160 @@ /* Mask for Status Register bit[1] */ #define SW_ALERT_MASK 0x2 +/* Mask to check H/W Alert status bit */ +#define HW_ALERT_MASK 0x80 /* Software Interrupt for triggering */ #define START_CMD 0x80 #define TRIGGER_MAILBOX 0x01 +/* Default message lengths as per APML command protocol */ +/* CPUID */ +#define CPUID_RD_DATA_LEN 0x8 +#define CPUID_WR_DATA_LEN 0x8 +#define CPUID_RD_REG_LEN 0xa +#define CPUID_WR_REG_LEN 0x9 + +/* CPUID MSR Command Ids */ +#define CPUID_MCA_CMD 0x73 +#define RD_CPUID_CMD 0x91 + +/* CPUID MCAMSR mask & index */ +#define CPUID_MCA_THRD_MASK GENMASK(15, 0) +#define CPUID_MCA_THRD_INDEX 32 +#define CPUID_MCA_FUNC_MASK GENMASK(31, 0) +#define CPUID_EXT_FUNC_INDEX 56 + +/* input for bulk write to CPUID protocol */ +struct cpu_msr_indata { + u8 wr_len; /* const value */ + u8 rd_len; /* const value */ + u8 proto_cmd; /* const value */ + u8 thread; /* thread number */ + union { + u8 reg_offset[4]; /* input value */ + u32 value; + } __packed; + u8 ext; /* extended function */ +}; + +/* output for bulk read from CPUID protocol */ +struct cpu_msr_outdata { + u8 num_bytes; /* number of bytes return */ + u8 status; /* Protocol status code */ + union { + u64 value; + u8 reg_data[8]; + } __packed; +}; + +static inline void prepare_cpuid_input_message(struct cpu_msr_indata *input, + u8 thread_id, u32 func, + u8 ext_func) +{ + input->rd_len = CPUID_RD_DATA_LEN; + input->wr_len = CPUID_WR_DATA_LEN; + input->proto_cmd = RD_CPUID_CMD; + input->thread = thread_id << 1; + input->value = func; + input->ext = ext_func; +} + +static int sbrmi_get_rev(struct sbrmi_data *data) +{ + unsigned int rev; + u16 offset = SBRMI_REV; + int ret; + + ret = regmap_read(data->regmap, offset, &rev); + if (ret < 0) + return ret; + + data->rev = rev; + return 0; +} + +/* Read CPUID function protocol */ +static int rmi_cpuid_read(struct sbrmi_data *data, + struct apml_cpuid_msg *msg) +{ + struct cpu_msr_indata input = {0}; + struct cpu_msr_outdata output = {0}; + int val = 0; + int ret, hw_status; + u16 thread; + + mutex_lock(&data->lock); + /* cache the rev value to identify if protocol is supported or not */ + if (!data->rev) { + ret = sbrmi_get_rev(data); + if (ret < 0) + goto exit_unlock; + } + /* CPUID protocol for REV 0x10 is not supported*/ + if (data->rev == 0x10) { + ret = -EOPNOTSUPP; + goto exit_unlock; + } + + thread = msg->cpu_in_out << CPUID_MCA_THRD_INDEX & CPUID_MCA_THRD_MASK; + + /* Thread > 127, Thread128 CS register, 1'b1 needs to be set to 1 */ + if (thread > 127) { + thread -= 128; + val = 1; + } + ret = regmap_write(data->regmap, SBRMI_THREAD128CS, val); + if (ret < 0) + goto exit_unlock; + + prepare_cpuid_input_message(&input, thread, + msg->cpu_in_out & CPUID_MCA_FUNC_MASK, + msg->cpu_in_out >> CPUID_EXT_FUNC_INDEX); + + ret = regmap_bulk_write(data->regmap, CPUID_MCA_CMD, + &input, CPUID_WR_REG_LEN); + if (ret < 0) + goto exit_unlock; + + /* + * For RMI Rev 0x20, new h/w status bit is introduced. which is used + * by firmware to indicate completion of commands (0x71, 0x72, 0x73). + * wait for the status bit to be set by the hardware before + * reading the data out. + */ + ret = regmap_read_poll_timeout(data->regmap, SBRMI_STATUS, hw_status, + hw_status & HW_ALERT_MASK, 500, 2000000); + if (ret) + goto exit_unlock; + + ret = regmap_bulk_read(data->regmap, CPUID_MCA_CMD, + &output, CPUID_RD_REG_LEN); + if (ret < 0) + goto exit_unlock; + + ret = regmap_write(data->regmap, SBRMI_STATUS, + HW_ALERT_MASK); + if (ret < 0) + goto exit_unlock; + + if (output.num_bytes != CPUID_RD_REG_LEN - 1) { + ret = -EMSGSIZE; + goto exit_unlock; + } + if (output.status) { + ret = -EPROTOTYPE; + msg->fw_ret_code = output.status; + goto exit_unlock; + } + msg->cpu_in_out = output.value; +exit_unlock: + if (ret < 0) + msg->cpu_in_out = 0; + mutex_unlock(&data->lock); + return ret; +} + int rmi_mailbox_xfer(struct sbrmi_data *data, struct apml_mbox_msg *msg) { @@ -123,6 +272,23 @@ static int apml_mailbox_xfer(struct sbrmi_data *data, struct apml_mbox_msg __use return copy_to_user(arg, &msg, sizeof(struct apml_mbox_msg)); } +static int apml_cpuid_xfer(struct sbrmi_data *data, struct apml_cpuid_msg __user *arg) +{ + struct apml_cpuid_msg msg = { 0 }; + int ret; + + /* Copy the structure from user */ + if (copy_from_user(&msg, arg, sizeof(struct apml_cpuid_msg))) + return -EFAULT; + + /* CPUID Protocol */ + ret = rmi_cpuid_read(data, &msg); + if (ret && ret != -EPROTOTYPE) + return ret; + + return copy_to_user(arg, &msg, sizeof(struct apml_cpuid_msg)); +} + static long sbrmi_ioctl(struct file *fp, unsigned int cmd, unsigned long arg) { void __user *argp = (void __user *)arg; @@ -132,6 +298,8 @@ static long sbrmi_ioctl(struct file *fp, unsigned int cmd, unsigned long arg) switch (cmd) { case SBRMI_IOCTL_MBOX_CMD: return apml_mailbox_xfer(data, argp); + case SBRMI_IOCTL_CPUID_CMD: + return apml_cpuid_xfer(data, argp); default: return -ENOTTY; } diff --git a/drivers/misc/amd-sbi/rmi-core.h b/drivers/misc/amd-sbi/rmi-core.h index 8ab31c6852d1..975ae858e9fd 100644 --- a/drivers/misc/amd-sbi/rmi-core.h +++ b/drivers/misc/amd-sbi/rmi-core.h @@ -15,7 +15,8 @@ /* SB-RMI registers */ enum sbrmi_reg { - SBRMI_CTRL = 0x01, + SBRMI_REV, + SBRMI_CTRL, SBRMI_STATUS, SBRMI_OUTBNDMSG0 = 0x30, SBRMI_OUTBNDMSG1, @@ -34,6 +35,7 @@ enum sbrmi_reg { SBRMI_INBNDMSG6, SBRMI_INBNDMSG7, SBRMI_SW_INTERRUPT, + SBRMI_THREAD128CS = 0x4b, }; /* @@ -56,6 +58,7 @@ struct sbrmi_data { struct mutex lock; u32 pwr_limit_max; u8 dev_static_addr; + u8 rev; }; int rmi_mailbox_xfer(struct sbrmi_data *data, struct apml_mbox_msg *msg); diff --git a/include/uapi/misc/amd-apml.h b/include/uapi/misc/amd-apml.h index a5f086f84b06..bb57dc75758a 100644 --- a/include/uapi/misc/amd-apml.h +++ b/include/uapi/misc/amd-apml.h @@ -25,6 +25,24 @@ struct apml_mbox_msg { __u32 fw_ret_code; }; +struct apml_cpuid_msg { + /* + * CPUID input + * [0]...[3] cpuid func, + * [4][5] cpuid: thread + * [6] cpuid: ext function & read eax/ebx or ecx/edx + * [7:0] -> bits [7:4] -> ext function & + * bit [0] read eax/ebx or ecx/edx + * CPUID output + */ + __u64 cpu_in_out; + /* + * Status code for CPUID read + */ + __u32 fw_ret_code; + __u32 pad; +}; + /* * AMD sideband interface base IOCTL */ @@ -48,4 +66,23 @@ struct apml_mbox_msg { */ #define SBRMI_IOCTL_MBOX_CMD _IOWR(SB_BASE_IOCTL_NR, 0, struct apml_mbox_msg) +/** + * DOC: SBRMI_IOCTL_CPUID_CMD + * + * @Parameters + * + * @struct apml_cpuid_msg + * Pointer to the &struct apml_cpuid_msg that will contain the protocol + * information + * + * @Description + * IOCTL command for APML messages using generic _IOWR + * The IOCTL provides userspace access to AMD sideband cpuid protocol + * - CPUID protocol to get CPU details for Function/Ext Function + * at thread level + * - returning "-EFAULT" if none of the above + * "-EPROTOTYPE" error is returned to provide additional error details + */ +#define SBRMI_IOCTL_CPUID_CMD _IOWR(SB_BASE_IOCTL_NR, 1, struct apml_cpuid_msg) + #endif /*_AMD_APML_H_*/ -- cgit v1.2.3 From 69b1ba83d21c4a89f6fcfbca1d515a60df65cf9e Mon Sep 17 00:00:00 2001 From: Akshay Gupta Date: Mon, 28 Apr 2025 06:30:32 +0000 Subject: misc: amd-sbi: Add support for read MCA register protocol - AMD provides custom protocol to read Machine Check Architecture(MCA) registers over sideband. The information is accessed for range of MCA registers by passing register address and thread ID to the protocol. MCA register read command using the register address to access Core::X86::Msr::MCG_CAP which determines the number of MCA banks. Access is read-only Reviewed-by: Naveen Krishna Chatradhi Signed-off-by: Akshay Gupta Link: https://lore.kernel.org/r/20250428063034.2145566-9-akshay.gupta@amd.com Signed-off-by: Greg Kroah-Hartman --- drivers/misc/amd-sbi/rmi-core.c | 114 ++++++++++++++++++++++++++++++++++++++++ include/uapi/misc/amd-apml.h | 33 ++++++++++++ 2 files changed, 147 insertions(+) diff --git a/drivers/misc/amd-sbi/rmi-core.c b/drivers/misc/amd-sbi/rmi-core.c index 471f50f0c368..171d6e871373 100644 --- a/drivers/misc/amd-sbi/rmi-core.c +++ b/drivers/misc/amd-sbi/rmi-core.c @@ -30,10 +30,16 @@ #define CPUID_WR_DATA_LEN 0x8 #define CPUID_RD_REG_LEN 0xa #define CPUID_WR_REG_LEN 0x9 +/* MSR */ +#define MSR_RD_REG_LEN 0xa +#define MSR_WR_REG_LEN 0x8 +#define MSR_RD_DATA_LEN 0x8 +#define MSR_WR_DATA_LEN 0x7 /* CPUID MSR Command Ids */ #define CPUID_MCA_CMD 0x73 #define RD_CPUID_CMD 0x91 +#define RD_MCA_CMD 0x86 /* CPUID MCAMSR mask & index */ #define CPUID_MCA_THRD_MASK GENMASK(15, 0) @@ -76,6 +82,16 @@ static inline void prepare_cpuid_input_message(struct cpu_msr_indata *input, input->ext = ext_func; } +static inline void prepare_mca_msr_input_message(struct cpu_msr_indata *input, + u8 thread_id, u32 data_in) +{ + input->rd_len = MSR_RD_DATA_LEN; + input->wr_len = MSR_WR_DATA_LEN; + input->proto_cmd = RD_MCA_CMD; + input->thread = thread_id << 1; + input->value = data_in; +} + static int sbrmi_get_rev(struct sbrmi_data *data) { unsigned int rev; @@ -171,6 +187,85 @@ exit_unlock: return ret; } +/* MCA MSR protocol */ +static int rmi_mca_msr_read(struct sbrmi_data *data, + struct apml_mcamsr_msg *msg) +{ + struct cpu_msr_outdata output = {0}; + struct cpu_msr_indata input = {0}; + int ret, val = 0; + int hw_status; + u16 thread; + + mutex_lock(&data->lock); + /* cache the rev value to identify if protocol is supported or not */ + if (!data->rev) { + ret = sbrmi_get_rev(data); + if (ret < 0) + goto exit_unlock; + } + /* MCA MSR protocol for REV 0x10 is not supported*/ + if (data->rev == 0x10) { + ret = -EOPNOTSUPP; + goto exit_unlock; + } + + thread = msg->mcamsr_in_out << CPUID_MCA_THRD_INDEX & CPUID_MCA_THRD_MASK; + + /* Thread > 127, Thread128 CS register, 1'b1 needs to be set to 1 */ + if (thread > 127) { + thread -= 128; + val = 1; + } + ret = regmap_write(data->regmap, SBRMI_THREAD128CS, val); + if (ret < 0) + goto exit_unlock; + + prepare_mca_msr_input_message(&input, thread, + msg->mcamsr_in_out & CPUID_MCA_FUNC_MASK); + + ret = regmap_bulk_write(data->regmap, CPUID_MCA_CMD, + &input, MSR_WR_REG_LEN); + if (ret < 0) + goto exit_unlock; + + /* + * For RMI Rev 0x20, new h/w status bit is introduced. which is used + * by firmware to indicate completion of commands (0x71, 0x72, 0x73). + * wait for the status bit to be set by the hardware before + * reading the data out. + */ + ret = regmap_read_poll_timeout(data->regmap, SBRMI_STATUS, hw_status, + hw_status & HW_ALERT_MASK, 500, 2000000); + if (ret) + goto exit_unlock; + + ret = regmap_bulk_read(data->regmap, CPUID_MCA_CMD, + &output, MSR_RD_REG_LEN); + if (ret < 0) + goto exit_unlock; + + ret = regmap_write(data->regmap, SBRMI_STATUS, + HW_ALERT_MASK); + if (ret < 0) + goto exit_unlock; + + if (output.num_bytes != MSR_RD_REG_LEN - 1) { + ret = -EMSGSIZE; + goto exit_unlock; + } + if (output.status) { + ret = -EPROTOTYPE; + msg->fw_ret_code = output.status; + goto exit_unlock; + } + msg->mcamsr_in_out = output.value; + +exit_unlock: + mutex_unlock(&data->lock); + return ret; +} + int rmi_mailbox_xfer(struct sbrmi_data *data, struct apml_mbox_msg *msg) { @@ -289,6 +384,23 @@ static int apml_cpuid_xfer(struct sbrmi_data *data, struct apml_cpuid_msg __user return copy_to_user(arg, &msg, sizeof(struct apml_cpuid_msg)); } +static int apml_mcamsr_xfer(struct sbrmi_data *data, struct apml_mcamsr_msg __user *arg) +{ + struct apml_mcamsr_msg msg = { 0 }; + int ret; + + /* Copy the structure from user */ + if (copy_from_user(&msg, arg, sizeof(struct apml_mcamsr_msg))) + return -EFAULT; + + /* MCAMSR Protocol */ + ret = rmi_mca_msr_read(data, &msg); + if (ret && ret != -EPROTOTYPE) + return ret; + + return copy_to_user(arg, &msg, sizeof(struct apml_mcamsr_msg)); +} + static long sbrmi_ioctl(struct file *fp, unsigned int cmd, unsigned long arg) { void __user *argp = (void __user *)arg; @@ -300,6 +412,8 @@ static long sbrmi_ioctl(struct file *fp, unsigned int cmd, unsigned long arg) return apml_mailbox_xfer(data, argp); case SBRMI_IOCTL_CPUID_CMD: return apml_cpuid_xfer(data, argp); + case SBRMI_IOCTL_MCAMSR_CMD: + return apml_mcamsr_xfer(data, argp); default: return -ENOTTY; } diff --git a/include/uapi/misc/amd-apml.h b/include/uapi/misc/amd-apml.h index bb57dc75758a..f718675d3966 100644 --- a/include/uapi/misc/amd-apml.h +++ b/include/uapi/misc/amd-apml.h @@ -43,6 +43,21 @@ struct apml_cpuid_msg { __u32 pad; }; +struct apml_mcamsr_msg { + /* + * MCAMSR input + * [0]...[3] mca msr func, + * [4][5] thread + * MCAMSR output + */ + __u64 mcamsr_in_out; + /* + * Status code for MCA/MSR access + */ + __u32 fw_ret_code; + __u32 pad; +}; + /* * AMD sideband interface base IOCTL */ @@ -85,4 +100,22 @@ struct apml_cpuid_msg { */ #define SBRMI_IOCTL_CPUID_CMD _IOWR(SB_BASE_IOCTL_NR, 1, struct apml_cpuid_msg) +/** + * DOC: SBRMI_IOCTL_MCAMSR_CMD + * + * @Parameters + * + * @struct apml_mcamsr_msg + * Pointer to the &struct apml_mcamsr_msg that will contain the protocol + * information + * + * @Description + * IOCTL command for APML messages using generic _IOWR + * The IOCTL provides userspace access to AMD sideband MCAMSR protocol + * - MCAMSR protocol to get MCA bank details for Function at thread level + * - returning "-EFAULT" if none of the above + * "-EPROTOTYPE" error is returned to provide additional error details + */ +#define SBRMI_IOCTL_MCAMSR_CMD _IOWR(SB_BASE_IOCTL_NR, 2, struct apml_mcamsr_msg) + #endif /*_AMD_APML_H_*/ -- cgit v1.2.3 From cf141287b77485ed7624ac1756b85cc801748c7c Mon Sep 17 00:00:00 2001 From: Akshay Gupta Date: Mon, 28 Apr 2025 06:30:33 +0000 Subject: misc: amd-sbi: Add support for register xfer - Provide user register access over IOCTL. Both register read and write are supported. - APML interface does not provide a synchronization method. By defining, a register access path, we use APML modules and library for all APML transactions. Without having to use external tools such as i2c-tools, which may cause race conditions. Reviewed-by: Naveen Krishna Chatradhi Signed-off-by: Akshay Gupta Link: https://lore.kernel.org/r/20250428063034.2145566-10-akshay.gupta@amd.com Signed-off-by: Greg Kroah-Hartman --- drivers/misc/amd-sbi/rmi-core.c | 29 +++++++++++++++++++++++++++++ include/uapi/misc/amd-apml.h | 31 +++++++++++++++++++++++++++++++ 2 files changed, 60 insertions(+) diff --git a/drivers/misc/amd-sbi/rmi-core.c b/drivers/misc/amd-sbi/rmi-core.c index 171d6e871373..b653a21a909e 100644 --- a/drivers/misc/amd-sbi/rmi-core.c +++ b/drivers/misc/amd-sbi/rmi-core.c @@ -350,6 +350,33 @@ exit_unlock: return ret; } +static int apml_rmi_reg_xfer(struct sbrmi_data *data, + struct apml_reg_xfer_msg __user *arg) +{ + struct apml_reg_xfer_msg msg = { 0 }; + unsigned int data_read; + int ret; + + /* Copy the structure from user */ + if (copy_from_user(&msg, arg, sizeof(struct apml_reg_xfer_msg))) + return -EFAULT; + + mutex_lock(&data->lock); + if (msg.rflag) { + ret = regmap_read(data->regmap, msg.reg_addr, &data_read); + if (!ret) + msg.data_in_out = data_read; + } else { + ret = regmap_write(data->regmap, msg.reg_addr, msg.data_in_out); + } + + mutex_unlock(&data->lock); + + if (msg.rflag && !ret) + return copy_to_user(arg, &msg, sizeof(struct apml_reg_xfer_msg)); + return ret; +} + static int apml_mailbox_xfer(struct sbrmi_data *data, struct apml_mbox_msg __user *arg) { struct apml_mbox_msg msg = { 0 }; @@ -414,6 +441,8 @@ static long sbrmi_ioctl(struct file *fp, unsigned int cmd, unsigned long arg) return apml_cpuid_xfer(data, argp); case SBRMI_IOCTL_MCAMSR_CMD: return apml_mcamsr_xfer(data, argp); + case SBRMI_IOCTL_REG_XFER_CMD: + return apml_rmi_reg_xfer(data, argp); default: return -ENOTTY; } diff --git a/include/uapi/misc/amd-apml.h b/include/uapi/misc/amd-apml.h index f718675d3966..745b3338fc06 100644 --- a/include/uapi/misc/amd-apml.h +++ b/include/uapi/misc/amd-apml.h @@ -58,6 +58,21 @@ struct apml_mcamsr_msg { __u32 pad; }; +struct apml_reg_xfer_msg { + /* + * RMI register address offset + */ + __u16 reg_addr; + /* + * Register data for read/write + */ + __u8 data_in_out; + /* + * Register read or write + */ + __u8 rflag; +}; + /* * AMD sideband interface base IOCTL */ @@ -118,4 +133,20 @@ struct apml_mcamsr_msg { */ #define SBRMI_IOCTL_MCAMSR_CMD _IOWR(SB_BASE_IOCTL_NR, 2, struct apml_mcamsr_msg) +/** + * DOC: SBRMI_IOCTL_REG_XFER_CMD + * + * @Parameters + * + * @struct apml_reg_xfer_msg + * Pointer to the &struct apml_reg_xfer_msg that will contain the protocol + * information + * + * @Description + * IOCTL command for APML messages using generic _IOWR + * The IOCTL provides userspace access to AMD sideband register xfer protocol + * - Register xfer protocol to get/set hardware register for given offset + */ +#define SBRMI_IOCTL_REG_XFER_CMD _IOWR(SB_BASE_IOCTL_NR, 3, struct apml_reg_xfer_msg) + #endif /*_AMD_APML_H_*/ -- cgit v1.2.3 From 4d95514d14e87427459ef9e9b5b81c8fe5ebb37c Mon Sep 17 00:00:00 2001 From: Akshay Gupta Date: Mon, 28 Apr 2025 06:30:34 +0000 Subject: misc: amd-sbi: Add document for AMD SB IOCTL description - This document provides AMD side band IOCTL description defined for APML and its usage. Multiple AMD custom protocols defined for side band system management uses this IOCTL. User space C-APIs are made available by esmi_oob_library [1], which is provided by the E-SMS project [2]. Link: https://github.com/amd/esmi_oob_library [1] Link: https://www.amd.com/en/developer/e-sms.html [2] Reviewed-by: Naveen Krishna Chatradhi Signed-off-by: Akshay Gupta Link: https://lore.kernel.org/r/20250428063034.2145566-11-akshay.gupta@amd.com Signed-off-by: Greg Kroah-Hartman --- Documentation/misc-devices/amd-sbi.rst | 99 ++++++++++++++++++++++++++++++++++ 1 file changed, 99 insertions(+) create mode 100644 Documentation/misc-devices/amd-sbi.rst diff --git a/Documentation/misc-devices/amd-sbi.rst b/Documentation/misc-devices/amd-sbi.rst new file mode 100644 index 000000000000..5648fc6ec572 --- /dev/null +++ b/Documentation/misc-devices/amd-sbi.rst @@ -0,0 +1,99 @@ +.. SPDX-License-Identifier: GPL-2.0 + +======================= +AMD SIDE BAND interface +======================= + +Some AMD Zen based processors supports system management +functionality via side-band interface (SBI) called +Advanced Platform Management Link (APML). APML is an I2C/I3C +based 2-wire processor target interface. APML is used to +communicate with the Remote Management Interface +(SB Remote Management Interface (SB-RMI) +and SB Temperature Sensor Interface (SB-TSI)). + +More details on the interface can be found in chapter +"5 Advanced Platform Management Link (APML)" of the family/model PPR [1]_. + +.. [1] https://www.amd.com/content/dam/amd/en/documents/epyc-technical-docs/programmer-references/55898_B1_pub_0_50.zip + + +SBRMI device +============ + +apml_sbrmi driver under the drivers/misc/amd-sbi creates miscdevice +/dev/sbrmi-* to let user space programs run APML mailbox, CPUID, +MCAMSR and register xfer commands. + +Register sets is common across APML protocols. IOCTL is providing synchronization +among protocols as transactions may create race condition. + +$ ls -al /dev/sbrmi-3c +crw------- 1 root root 10, 53 Jul 10 11:13 /dev/sbrmi-3c + +apml_sbrmi driver registers hwmon sensors for monitoring power_cap_max, +current power consumption and managing power_cap. + +Characteristics of the dev node: + * Differnet xfer protocols are defined: + * Mailbox + * CPUID + * MCA_MSR + * Register xfer + +Access restrictions: + * Only root user is allowed to open the file. + * APML Mailbox messages and Register xfer access are read-write, + * CPUID and MCA_MSR access is read-only. + +Driver IOCTLs +============= + +.. c:macro:: SBRMI_IOCTL_MBOX_CMD +.. kernel-doc:: include/uapi/misc/amd-apml.h + :doc: SBRMI_IOCTL_MBOX_CMD +.. c:macro:: SBRMI_IOCTL_CPUID_CMD +.. kernel-doc:: include/uapi/misc/amd-apml.h + :doc: SBRMI_IOCTL_CPUID_CMD +.. c:macro:: SBRMI_IOCTL_MCAMSR_CMD +.. kernel-doc:: include/uapi/misc/amd-apml.h + :doc: SBRMI_IOCTL_MCAMSR_CMD +.. c:macro:: SBRMI_IOCTL_REG_XFER_CMD +.. kernel-doc:: include/uapi/misc/amd-apml.h + :doc: SBRMI_IOCTL_REG_XFER_CMD + +User-space usage +================ + +To access side band interface from a C program. +First, user need to include the headers:: + + #include + +Which defines the supported IOCTL and data structure to be passed +from the user space. + +Next thing, open the device file, as follows:: + + int file; + + file = open("/dev/sbrmi-*", O_RDWR); + if (file < 0) { + /* ERROR HANDLING */ + exit(1); + } + +The following IOCTLs are defined: + +``#define SB_BASE_IOCTL_NR 0xF9`` +``#define SBRMI_IOCTL_MBOX_CMD _IOWR(SB_BASE_IOCTL_NR, 0, struct apml_mbox_msg)`` +``#define SBRMI_IOCTL_CPUID_CMD _IOWR(SB_BASE_IOCTL_NR, 1, struct apml_cpuid_msg)`` +``#define SBRMI_IOCTL_MCAMSR_CMD _IOWR(SB_BASE_IOCTL_NR, 2, struct apml_mcamsr_msg)`` +``#define SBRMI_IOCTL_REG_XFER_CMD _IOWR(SB_BASE_IOCTL_NR, 3, struct apml_reg_xfer_msg)`` + + +User space C-APIs are made available by esmi_oob_library, hosted at +[2]_ which is provided by the E-SMS project [3]_. + +.. [2] https://github.com/amd/esmi_oob_library +.. [3] https://www.amd.com/en/developer/e-sms.html -- cgit v1.2.3 From 46a4d12a005c58317e89b5644774c683365dc2ca Mon Sep 17 00:00:00 2001 From: Roxana Nicolescu Date: Thu, 1 May 2025 20:05:00 +0000 Subject: char: tlclk: Fix correct sysfs directory path for tlclk The tlckl driver does not create a platform device anymore. It was recently changed to use a faux device instead. Therefore the sysfs path has changed from /sys/devices/platform/telco_clock to /sys/devices/faux/telco_clock. Fixes: 72239a78f9f5 ("tlclk: convert to use faux_device") Signed-off-by: Roxana Nicolescu Link: https://lore.kernel.org/r/20250501200457.18506-1-nicolescu.roxana@protonmail.com Signed-off-by: Greg Kroah-Hartman --- drivers/char/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig index 8fb33c90482f..ae6196760556 100644 --- a/drivers/char/Kconfig +++ b/drivers/char/Kconfig @@ -404,7 +404,7 @@ config TELCLOCK configuration of the telecom clock configuration settings. This device is used for hardware synchronization across the ATCA backplane fabric. Upon loading, the driver exports a sysfs directory, - /sys/devices/platform/telco_clock, with a number of files for + /sys/devices/faux/telco_clock, with a number of files for controlling the behavior of this hardware. source "drivers/s390/char/Kconfig" -- cgit v1.2.3 From 97ce0fe2b7240d47d9124daa92217e478c21a3ba Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Wed, 7 May 2025 11:07:28 +0200 Subject: mei: vsc: Cast tx_buf to (__be32 *) when passed to cpu_to_be32_array() Commit f88c0c72ffb0 ("mei: vsc: Use struct vsc_tp_packet as vsc-tp tx_buf and rx_buf type") changed the type of tx_buf from "void *" to "struct vsc_tp_packet *" and added a cast to (u32 *) when passing it to cpu_to_be32_array() and the same change was made for rx_buf. This triggers the type-check warning in sparse: vsc-tp.c:327:28: sparse: expected restricted __be32 [usertype] *dst vsc-tp.c:327:28: sparse: got unsigned int [usertype] * vsc-tp.c:343:42: sparse: expected restricted __be32 const [usertype] *src vsc-tp.c:343:42: sparse: got unsigned int [usertype] * Fix this by casting to (__be32 *) instead. Note actually changing the type of the buffers to "be32 *" is not an option this buffer does actually contain a "struct vsc_tp_packet" and is used as such most of the time. vsc_tp_rom_xfer() re-uses the buffers as just dumb arrays of 32 bit words to talk to the device before the firmware has booted, to avoid needing to allocate a separate buffer. Fixes: f88c0c72ffb0 ("mei: vsc: Use struct vsc_tp_packet as vsc-tp tx_buf and rx_buf type") Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202505071634.kZ0I7Va6-lkp@intel.com/ Signed-off-by: Hans de Goede Reviewed-by: Sakari Ailus Link: https://lore.kernel.org/r/20250507090728.115910-1-hdegoede@redhat.com Signed-off-by: Greg Kroah-Hartman --- drivers/misc/mei/vsc-tp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/misc/mei/vsc-tp.c b/drivers/misc/mei/vsc-tp.c index da26a080916c..267d0de5fade 100644 --- a/drivers/misc/mei/vsc-tp.c +++ b/drivers/misc/mei/vsc-tp.c @@ -324,7 +324,7 @@ int vsc_tp_rom_xfer(struct vsc_tp *tp, const void *obuf, void *ibuf, size_t len) guard(mutex)(&tp->mutex); /* rom xfer is big endian */ - cpu_to_be32_array((u32 *)tp->tx_buf, obuf, words); + cpu_to_be32_array((__be32 *)tp->tx_buf, obuf, words); ret = read_poll_timeout(gpiod_get_value_cansleep, ret, !ret, VSC_TP_ROM_XFER_POLL_DELAY_US, @@ -340,7 +340,7 @@ int vsc_tp_rom_xfer(struct vsc_tp *tp, const void *obuf, void *ibuf, size_t len) return ret; if (ibuf) - be32_to_cpu_array(ibuf, (u32 *)tp->rx_buf, words); + be32_to_cpu_array(ibuf, (__be32 *)tp->rx_buf, words); return ret; } -- cgit v1.2.3 From 1bd6406fb5f36c2bb1e96e27d4c3e9f4d09edde4 Mon Sep 17 00:00:00 2001 From: Wupeng Ma Date: Sat, 10 May 2025 11:30:40 +0800 Subject: VMCI: fix race between vmci_host_setup_notify and vmci_ctx_unset_notify During our test, it is found that a warning can be trigger in try_grab_folio as follow: ------------[ cut here ]------------ WARNING: CPU: 0 PID: 1678 at mm/gup.c:147 try_grab_folio+0x106/0x130 Modules linked in: CPU: 0 UID: 0 PID: 1678 Comm: syz.3.31 Not tainted 6.15.0-rc5 #163 PREEMPT(undef) RIP: 0010:try_grab_folio+0x106/0x130 Call Trace: follow_huge_pmd+0x240/0x8e0 follow_pmd_mask.constprop.0.isra.0+0x40b/0x5c0 follow_pud_mask.constprop.0.isra.0+0x14a/0x170 follow_page_mask+0x1c2/0x1f0 __get_user_pages+0x176/0x950 __gup_longterm_locked+0x15b/0x1060 ? gup_fast+0x120/0x1f0 gup_fast_fallback+0x17e/0x230 get_user_pages_fast+0x5f/0x80 vmci_host_unlocked_ioctl+0x21c/0xf80 RIP: 0033:0x54d2cd ---[ end trace 0000000000000000 ]--- Digging into the source, context->notify_page may init by get_user_pages_fast and can be seen in vmci_ctx_unset_notify which will try to put_page. However get_user_pages_fast is not finished here and lead to following try_grab_folio warning. The race condition is shown as follow: cpu0 cpu1 vmci_host_do_set_notify vmci_host_setup_notify get_user_pages_fast(uva, 1, FOLL_WRITE, &context->notify_page); lockless_pages_from_mm gup_pgd_range gup_huge_pmd // update &context->notify_page vmci_host_do_set_notify vmci_ctx_unset_notify notify_page = context->notify_page; if (notify_page) put_page(notify_page); // page is freed __gup_longterm_locked __get_user_pages follow_trans_huge_pmd try_grab_folio // warn here To slove this, use local variable page to make notify_page can be seen after finish get_user_pages_fast. Fixes: a1d88436d53a ("VMCI: Fix two UVA mapping bugs") Cc: stable Closes: https://lore.kernel.org/all/e91da589-ad57-3969-d979-879bbd10dddd@huawei.com/ Signed-off-by: Wupeng Ma Link: https://lore.kernel.org/r/20250510033040.901582-1-mawupeng1@huawei.com Signed-off-by: Greg Kroah-Hartman --- drivers/misc/vmw_vmci/vmci_host.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/drivers/misc/vmw_vmci/vmci_host.c b/drivers/misc/vmw_vmci/vmci_host.c index abe79f6fd2a7..b64944367ac5 100644 --- a/drivers/misc/vmw_vmci/vmci_host.c +++ b/drivers/misc/vmw_vmci/vmci_host.c @@ -227,6 +227,7 @@ static int drv_cp_harray_to_user(void __user *user_buf_uva, static int vmci_host_setup_notify(struct vmci_ctx *context, unsigned long uva) { + struct page *page; int retval; if (context->notify_page) { @@ -243,13 +244,11 @@ static int vmci_host_setup_notify(struct vmci_ctx *context, /* * Lock physical page backing a given user VA. */ - retval = get_user_pages_fast(uva, 1, FOLL_WRITE, &context->notify_page); - if (retval != 1) { - context->notify_page = NULL; + retval = get_user_pages_fast(uva, 1, FOLL_WRITE, &page); + if (retval != 1) return VMCI_ERROR_GENERIC; - } - if (context->notify_page == NULL) - return VMCI_ERROR_UNAVAILABLE; + + context->notify_page = page; /* * Map the locked page and set up notify pointer. -- cgit v1.2.3 From 0be5eac879f28a11b02c6480b86980f9a5688454 Mon Sep 17 00:00:00 2001 From: Chen Ni Date: Wed, 14 May 2025 11:26:37 +0800 Subject: hpet: Remove unnecessary NULL check before unregister_sysctl_table() unregister_sysctl_table() checks for NULL pointers internally. Remove unneeded NULL check here. Signed-off-by: Chen Ni Acked-by: Clemens Ladisch Link: https://lore.kernel.org/r/20250514032637.2317639-1-nichen@iscas.ac.cn Signed-off-by: Greg Kroah-Hartman --- drivers/char/hpet.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c index e110857824fc..0713ea2b2a51 100644 --- a/drivers/char/hpet.c +++ b/drivers/char/hpet.c @@ -1023,8 +1023,7 @@ static int __init hpet_init(void) result = acpi_bus_register_driver(&hpet_acpi_driver); if (result < 0) { - if (sysctl_header) - unregister_sysctl_table(sysctl_header); + unregister_sysctl_table(sysctl_header); misc_deregister(&hpet_misc); return result; } -- cgit v1.2.3 From cdd18ef9825953a756f4e0fda734254ec08c4055 Mon Sep 17 00:00:00 2001 From: WangYuli Date: Sat, 17 May 2025 20:23:26 -0700 Subject: spmi: Only use Hikey 970 SPMI controller driver when ARM64 SPMI_HISI3670, the Hikey 970 SPMI controller driver, is only required to use the Kirin 970 SPMI bus. And the Kirin 970 is an ARM64-based SoC, it cannot be used on platforms of other architectures. Link: https://lore.kernel.org/all/b4810f476e41e7de4efdf28b42472ae4ffe7defe.1597647359.git.mchehab+huawei@kernel.org/ Reported-by: Wentao Guan Closes: https://github.com/deepin-community/kernel/pull/604 Signed-off-by: WangYuli Link: https://lore.kernel.org/r/23BAA675A75EF4F5+20250218050552.57711-1-wangyuli@uniontech.com Signed-off-by: Stephen Boyd Link: https://lore.kernel.org/r/20250518032330.2959766-2-sboyd@kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/spmi/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/spmi/Kconfig b/drivers/spmi/Kconfig index 737802046314..4ee496491c74 100644 --- a/drivers/spmi/Kconfig +++ b/drivers/spmi/Kconfig @@ -14,6 +14,7 @@ if SPMI config SPMI_HISI3670 tristate "Hisilicon 3670 SPMI Controller" select IRQ_DOMAIN_HIERARCHY + depends on ARM64 || COMPILE_TEST depends on HAS_IOMEM help If you say yes to this option, support will be included for the -- cgit v1.2.3 From 8cc68226a3a6a4854e3aca0521d074646db100d6 Mon Sep 17 00:00:00 2001 From: Sasha Finkelstein Date: Sat, 17 May 2025 20:23:27 -0700 Subject: dt-bindings: spmi: Add Apple SPMI controller Add bindings for the SPMI controller present on most Apple SoCs Reviewed-by: "Rob Herring (Arm)" Reviewed-by: Sven Peter Signed-off-by: Sasha Finkelstein Link: https://lore.kernel.org/r/20250409-spmi-v4-1-eb81ecfd1f64@gmail.com Reviewed-by: Neal Gompa Signed-off-by: Stephen Boyd Link: https://lore.kernel.org/r/20250518032330.2959766-3-sboyd@kernel.org Signed-off-by: Greg Kroah-Hartman --- .../devicetree/bindings/spmi/apple,spmi.yaml | 49 ++++++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 50 insertions(+) create mode 100644 Documentation/devicetree/bindings/spmi/apple,spmi.yaml diff --git a/Documentation/devicetree/bindings/spmi/apple,spmi.yaml b/Documentation/devicetree/bindings/spmi/apple,spmi.yaml new file mode 100644 index 000000000000..16bd7eb2b7af --- /dev/null +++ b/Documentation/devicetree/bindings/spmi/apple,spmi.yaml @@ -0,0 +1,49 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/spmi/apple,spmi.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Apple SPMI controller + +maintainers: + - Sasha Finkelstein + +description: A SPMI controller present on most Apple SoCs + +allOf: + - $ref: spmi.yaml# + +properties: + compatible: + items: + - enum: + - apple,t8103-spmi + - apple,t6000-spmi + - apple,t8112-spmi + - const: apple,spmi + + reg: + maxItems: 1 + +required: + - compatible + - reg + +unevaluatedProperties: false + +examples: + - | + #include + + spmi@920a1300 { + compatible = "apple,t6000-spmi", "apple,spmi"; + reg = <0x920a1300 0x100>; + #address-cells = <2>; + #size-cells = <0>; + + pmic@f { + reg = <0xf SPMI_USID>; + /* PMIC-specific properties */ + }; + }; diff --git a/MAINTAINERS b/MAINTAINERS index b5995660c219..6748b72e7486 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2283,6 +2283,7 @@ F: Documentation/devicetree/bindings/pinctrl/apple,pinctrl.yaml F: Documentation/devicetree/bindings/power/apple* F: Documentation/devicetree/bindings/pwm/apple,s5l-fpwm.yaml F: Documentation/devicetree/bindings/spi/apple,spi.yaml +F: Documentation/devicetree/bindings/spmi/apple,spmi.yaml F: Documentation/devicetree/bindings/watchdog/apple,wdt.yaml F: arch/arm64/boot/dts/apple/ F: drivers/bluetooth/hci_bcm4377.c -- cgit v1.2.3 From 77ca75e80c7197f71038d53d0e793d136f8a30ef Mon Sep 17 00:00:00 2001 From: Jean-Francois Bortolotti Date: Sat, 17 May 2025 20:23:28 -0700 Subject: spmi: add a spmi driver for Apple SoC The connected PMU contains several useful nvmem cells such as RTC offset, boot failure counters, reboot/shutdown selector, and a few others. In addition M3+ machines have their USB-PD controller connected via SPMI. Signed-off-by: Jean-Francois Bortolotti Reviewed-by: Sven Peter Reviewed-by: Alyssa Rosenzweig Co-developed-by: Sasha Finkelstein Signed-off-by: Sasha Finkelstein Link: https://lore.kernel.org/r/20250409-spmi-v4-2-eb81ecfd1f64@gmail.com Reviewed-by: Neal Gompa Signed-off-by: Stephen Boyd Link: https://lore.kernel.org/r/20250518032330.2959766-4-sboyd@kernel.org Signed-off-by: Greg Kroah-Hartman --- MAINTAINERS | 1 + drivers/spmi/Kconfig | 8 ++ drivers/spmi/Makefile | 1 + drivers/spmi/spmi-apple-controller.c | 168 +++++++++++++++++++++++++++++++++++ 4 files changed, 178 insertions(+) create mode 100644 drivers/spmi/spmi-apple-controller.c diff --git a/MAINTAINERS b/MAINTAINERS index 6748b72e7486..78974c485bdc 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2304,6 +2304,7 @@ F: drivers/pinctrl/pinctrl-apple-gpio.c F: drivers/pwm/pwm-apple.c F: drivers/soc/apple/* F: drivers/spi/spi-apple.c +F: drivers/spmi/spmi-apple-controller.c F: drivers/video/backlight/apple_dwi_bl.c F: drivers/watchdog/apple_wdt.c F: include/dt-bindings/interrupt-controller/apple-aic.h diff --git a/drivers/spmi/Kconfig b/drivers/spmi/Kconfig index 4ee496491c74..a80cf4047b86 100644 --- a/drivers/spmi/Kconfig +++ b/drivers/spmi/Kconfig @@ -11,6 +11,14 @@ menuconfig SPMI if SPMI +config SPMI_APPLE + tristate "Apple SoC SPMI Controller platform driver" + depends on ARCH_APPLE || COMPILE_TEST + help + If you say yes to this option, support will be included for the + SPMI controller present on many Apple SoCs, including the + t8103 (M1) and t600x (M1 Pro/Max). + config SPMI_HISI3670 tristate "Hisilicon 3670 SPMI Controller" select IRQ_DOMAIN_HIERARCHY diff --git a/drivers/spmi/Makefile b/drivers/spmi/Makefile index 7f152167bb05..38ac635645ba 100644 --- a/drivers/spmi/Makefile +++ b/drivers/spmi/Makefile @@ -4,6 +4,7 @@ # obj-$(CONFIG_SPMI) += spmi.o spmi-devres.o +obj-$(CONFIG_SPMI_APPLE) += spmi-apple-controller.o obj-$(CONFIG_SPMI_HISI3670) += hisi-spmi-controller.o obj-$(CONFIG_SPMI_MSM_PMIC_ARB) += spmi-pmic-arb.o obj-$(CONFIG_SPMI_MTK_PMIF) += spmi-mtk-pmif.o diff --git a/drivers/spmi/spmi-apple-controller.c b/drivers/spmi/spmi-apple-controller.c new file mode 100644 index 000000000000..697b3e8bb023 --- /dev/null +++ b/drivers/spmi/spmi-apple-controller.c @@ -0,0 +1,168 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Apple SoC SPMI device driver + * + * Copyright The Asahi Linux Contributors + * + * Inspired by: + * OpenBSD support Copyright (c) 2021 Mark Kettenis + * Correllium support Copyright (C) 2021 Corellium LLC + * hisi-spmi-controller.c + * spmi-pmic-arb.c Copyright (c) 2021, The Linux Foundation. + */ + +#include +#include +#include +#include +#include +#include + +/* SPMI Controller Registers */ +#define SPMI_STATUS_REG 0 +#define SPMI_CMD_REG 0x4 +#define SPMI_RSP_REG 0x8 + +#define SPMI_RX_FIFO_EMPTY BIT(24) + +#define REG_POLL_INTERVAL_US 10000 +#define REG_POLL_TIMEOUT_US (REG_POLL_INTERVAL_US * 5) + +struct apple_spmi { + void __iomem *regs; +}; + +#define poll_reg(spmi, reg, val, cond) \ + readl_poll_timeout((spmi)->regs + (reg), (val), (cond), \ + REG_POLL_INTERVAL_US, REG_POLL_TIMEOUT_US) + +static inline u32 apple_spmi_pack_cmd(u8 opc, u8 sid, u16 saddr, size_t len) +{ + return opc | sid << 8 | saddr << 16 | (len - 1) | (1 << 15); +} + +/* Wait for Rx FIFO to have something */ +static int apple_spmi_wait_rx_not_empty(struct spmi_controller *ctrl) +{ + struct apple_spmi *spmi = spmi_controller_get_drvdata(ctrl); + int ret; + u32 status; + + ret = poll_reg(spmi, SPMI_STATUS_REG, status, !(status & SPMI_RX_FIFO_EMPTY)); + if (ret) { + dev_err(&ctrl->dev, + "failed to wait for RX FIFO not empty\n"); + return ret; + } + + return 0; +} + +static int spmi_read_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid, + u16 saddr, u8 *buf, size_t len) +{ + struct apple_spmi *spmi = spmi_controller_get_drvdata(ctrl); + u32 spmi_cmd = apple_spmi_pack_cmd(opc, sid, saddr, len); + u32 rsp; + size_t len_read = 0; + u8 i; + int ret; + + writel(spmi_cmd, spmi->regs + SPMI_CMD_REG); + + ret = apple_spmi_wait_rx_not_empty(ctrl); + if (ret) + return ret; + + /* Discard SPMI reply status */ + readl(spmi->regs + SPMI_RSP_REG); + + /* Read SPMI data reply */ + while (len_read < len) { + rsp = readl(spmi->regs + SPMI_RSP_REG); + i = 0; + while ((len_read < len) && (i < 4)) { + buf[len_read++] = ((0xff << (8 * i)) & rsp) >> (8 * i); + i += 1; + } + } + + return 0; +} + +static int spmi_write_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid, + u16 saddr, const u8 *buf, size_t len) +{ + struct apple_spmi *spmi = spmi_controller_get_drvdata(ctrl); + u32 spmi_cmd = apple_spmi_pack_cmd(opc, sid, saddr, len); + size_t i = 0, j; + int ret; + + writel(spmi_cmd, spmi->regs + SPMI_CMD_REG); + + while (i < len) { + j = 0; + spmi_cmd = 0; + while ((j < 4) & (i < len)) + spmi_cmd |= buf[i++] << (j++ * 8); + + writel(spmi_cmd, spmi->regs + SPMI_CMD_REG); + } + + ret = apple_spmi_wait_rx_not_empty(ctrl); + if (ret) + return ret; + + /* Discard */ + readl(spmi->regs + SPMI_RSP_REG); + + return 0; +} + +static int apple_spmi_probe(struct platform_device *pdev) +{ + struct apple_spmi *spmi; + struct spmi_controller *ctrl; + int ret; + + ctrl = devm_spmi_controller_alloc(&pdev->dev, sizeof(*spmi)); + if (IS_ERR(ctrl)) + return -ENOMEM; + + spmi = spmi_controller_get_drvdata(ctrl); + + spmi->regs = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(spmi->regs)) + return PTR_ERR(spmi->regs); + + ctrl->dev.of_node = pdev->dev.of_node; + + ctrl->read_cmd = spmi_read_cmd; + ctrl->write_cmd = spmi_write_cmd; + + ret = devm_spmi_controller_add(&pdev->dev, ctrl); + if (ret) + return dev_err_probe(&pdev->dev, ret, + "spmi_controller_add failed\n"); + + return 0; +} + +static const struct of_device_id apple_spmi_match_table[] = { + { .compatible = "apple,spmi", }, + {} +}; +MODULE_DEVICE_TABLE(of, apple_spmi_match_table); + +static struct platform_driver apple_spmi_driver = { + .probe = apple_spmi_probe, + .driver = { + .name = "apple-spmi", + .of_match_table = apple_spmi_match_table, + }, +}; +module_platform_driver(apple_spmi_driver); + +MODULE_AUTHOR("Jean-Francois Bortolotti "); +MODULE_DESCRIPTION("Apple SoC SPMI driver"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3 From 16d693749866f2e4731f2aa1c553f185804dd392 Mon Sep 17 00:00:00 2001 From: "Jiri Slaby (SUSE)" Date: Sat, 17 May 2025 20:23:29 -0700 Subject: irqdomain: spmi: Switch to irq_domain_create_tree() irq_domain_add_tree() is going away as being obsolete now. Switch to the preferred irq_domain_create_tree(). That differs in the first parameter: It takes more generic struct fwnode_handle instead of struct device_node. Therefore, of_fwnode_handle() is added around the parameter. Note some of the users can likely use dev->fwnode directly instead of indirect of_fwnode_handle(dev->of_node). But dev->fwnode is not guaranteed to be set for all, so this has to be investigated on case to case basis (by people who can actually test with the HW). Signed-off-by: "Jiri Slaby (SUSE)" Cc: Stephen Boyd Link: https://lore.kernel.org/r/20250319092951.37667-37-jirislaby@kernel.org Signed-off-by: Stephen Boyd Link: https://lore.kernel.org/r/20250518032330.2959766-5-sboyd@kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/spmi/spmi-pmic-arb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/spmi/spmi-pmic-arb.c b/drivers/spmi/spmi-pmic-arb.c index 5c058db21821..91581974ef84 100644 --- a/drivers/spmi/spmi-pmic-arb.c +++ b/drivers/spmi/spmi-pmic-arb.c @@ -1737,7 +1737,7 @@ static int spmi_pmic_arb_bus_init(struct platform_device *pdev, dev_dbg(&pdev->dev, "adding irq domain for bus %d\n", bus_index); - bus->domain = irq_domain_add_tree(node, &pmic_arb_irq_domain_ops, bus); + bus->domain = irq_domain_create_tree(of_fwnode_handle(node), &pmic_arb_irq_domain_ops, bus); if (!bus->domain) { dev_err(&pdev->dev, "unable to create irq_domain\n"); return -ENOMEM; -- cgit v1.2.3 From 0b9c738f9c4dc27d8ddda15a80360150fb5a1c33 Mon Sep 17 00:00:00 2001 From: Angelo Dureghello Date: Tue, 15 Apr 2025 09:44:12 +0200 Subject: docs: iio: ad3552r: fix malformed table MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fix malformed table. Fixes: ede84c455659 ("docs: iio: add documentation for ad3552r driver") Signed-off-by: Angelo Dureghello Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250415-wip-bl-ad3552r-fix-doc-table-v1-1-717ffd320c9d@baylibre.com Signed-off-by: Jonathan Cameron --- Documentation/iio/ad3552r.rst | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/iio/ad3552r.rst b/Documentation/iio/ad3552r.rst index 582507abe8c4..f5d59e4e86c7 100644 --- a/Documentation/iio/ad3552r.rst +++ b/Documentation/iio/ad3552r.rst @@ -56,7 +56,7 @@ specific debugfs path ``/sys/kernel/debug/iio/iio:deviceX``. | Debugfs device files | Description | +-----------------------+------------------------------------------------------+ | data_source | The used data source, as | -| | ``normal``, ``ramp-16bit``, etc. | +| | ``normal``, ``ramp-16bit``, etc. | +-----------------------+------------------------------------------------------+ | data_source_available | The available data sources. | +-----------------------+------------------------------------------------------+ -- cgit v1.2.3 From 8f08055bc67a355aca55856cc810b89645506a5f Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 13 Apr 2025 11:34:28 +0100 Subject: iio: introduced iio_push_to_buffers_with_ts() that takes a data_total_len argument. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Check that data_total_len argument against iio_dev->scan_bytes. The size needs to be at least as big as the scan. It can be larger, which is typical if only part of fixed sized storage is used due to a subset of channels being enabled. Reviewed-by: Nuno Sá Reviewed-by: David Lechner Link: https://patch.msgid.link/20250413103443.2420727-6-jic23@kernel.org Signed-off-by: Jonathan Cameron --- include/linux/iio/buffer.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/include/linux/iio/buffer.h b/include/linux/iio/buffer.h index 3b8d618bb3df..5c84ec4a9810 100644 --- a/include/linux/iio/buffer.h +++ b/include/linux/iio/buffer.h @@ -45,6 +45,18 @@ static inline int iio_push_to_buffers_with_timestamp(struct iio_dev *indio_dev, return iio_push_to_buffers(indio_dev, data); } +static inline int iio_push_to_buffers_with_ts(struct iio_dev *indio_dev, + void *data, size_t data_total_len, + s64 timestamp) +{ + if (unlikely(data_total_len < indio_dev->scan_bytes)) { + dev_err(&indio_dev->dev, "Undersized storage pushed to buffer\n"); + return -ENOSPC; + } + + return iio_push_to_buffers_with_timestamp(indio_dev, data, timestamp); +} + int iio_push_to_buffers_with_ts_unaligned(struct iio_dev *indio_dev, const void *data, size_t data_sz, int64_t timestamp); -- cgit v1.2.3 From fda643a9530c86e503a90791392443cd47f3c997 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 13 Apr 2025 11:34:29 +0100 Subject: iio: dummy: Use a fixed structure to build up scan to push to buffers. It has long been discouraged for drivers to make use of iio_dev->scan_bytes directly as that is an implementation detail of the core. As such our example driver should definitely not be doing so. In order to illustrate the more complex case, where a DMA safe buffer is needed, continue to kzalloc() the storage (but with a structure definition to provide an explicit data layout). Also add comments on when a DMA safe buffer is necessary and the two common ways of obtaining one. Whilst we have a mixture of signed and unsigned channels, the unsigned channels have ranges that can be stored in a signed value - hence use signed storage for all channels, simplifying the structure definition. Reviewed-by: David Lechner Link: https://patch.msgid.link/20250413103443.2420727-7-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/dummy/iio_simple_dummy_buffer.c | 25 ++++++++++++++++++------- 1 file changed, 18 insertions(+), 7 deletions(-) diff --git a/drivers/iio/dummy/iio_simple_dummy_buffer.c b/drivers/iio/dummy/iio_simple_dummy_buffer.c index 288880346707..d0a7343e1b35 100644 --- a/drivers/iio/dummy/iio_simple_dummy_buffer.c +++ b/drivers/iio/dummy/iio_simple_dummy_buffer.c @@ -31,6 +31,11 @@ static const s16 fakedata[] = { [DUMMY_INDEX_ACCELX] = 344, }; +struct dummy_scan { + s16 data[ARRAY_SIZE(fakedata)]; + aligned_s64 timestamp; +}; + /** * iio_simple_dummy_trigger_h() - the trigger handler function * @irq: the interrupt number @@ -45,11 +50,18 @@ static irqreturn_t iio_simple_dummy_trigger_h(int irq, void *p) { struct iio_poll_func *pf = p; struct iio_dev *indio_dev = pf->indio_dev; + struct dummy_scan *scan; int i = 0, j; - u16 *data; - data = kzalloc(indio_dev->scan_bytes, GFP_KERNEL); - if (!data) + /* + * Note that some buses such as SPI require DMA safe buffers which + * cannot be on the stack. Two easy ways to do this: + * - Local kzalloc (as done here) + * - A buffer at the end of the structure accessed via iio_priv() + * that is marked __aligned(IIO_DMA_MINALIGN). + */ + scan = kzalloc(sizeof(*scan), GFP_KERNEL); + if (!scan) goto done; /* @@ -69,13 +81,12 @@ static irqreturn_t iio_simple_dummy_trigger_h(int irq, void *p) * constant table fakedata. */ iio_for_each_active_channel(indio_dev, j) - data[i++] = fakedata[j]; + scan->data[i++] = fakedata[j]; - iio_push_to_buffers_with_timestamp(indio_dev, data, + iio_push_to_buffers_with_timestamp(indio_dev, scan, iio_get_time_ns(indio_dev)); - kfree(data); - + kfree(scan); done: /* * Tell the core we are done with this trigger and ready for the -- cgit v1.2.3 From 2d1168263bcb84c38f3475f2336b30ede4235ae1 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 13 Apr 2025 11:34:30 +0100 Subject: iio: dummy: Switch to iio_push_to_buffers_with_ts() and provide size of storage MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Provide the storage size so that the helper can sanity check that it is large enough for the configured channels. Reviewed-by: Nuno Sá Reviewed-by: David Lechner Link: https://patch.msgid.link/20250413103443.2420727-8-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/dummy/iio_simple_dummy_buffer.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/iio/dummy/iio_simple_dummy_buffer.c b/drivers/iio/dummy/iio_simple_dummy_buffer.c index d0a7343e1b35..e35e0596cbfb 100644 --- a/drivers/iio/dummy/iio_simple_dummy_buffer.c +++ b/drivers/iio/dummy/iio_simple_dummy_buffer.c @@ -83,8 +83,8 @@ static irqreturn_t iio_simple_dummy_trigger_h(int irq, void *p) iio_for_each_active_channel(indio_dev, j) scan->data[i++] = fakedata[j]; - iio_push_to_buffers_with_timestamp(indio_dev, scan, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, scan, sizeof(*scan), + iio_get_time_ns(indio_dev)); kfree(scan); done: -- cgit v1.2.3 From 4d15307225ff15ed7352c01e570fdcca9bf0fe2c Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 13 Apr 2025 11:34:31 +0100 Subject: iio: adc: ti-ads131e08: Use new iio_push_to_buffers_with_ts() to provide length sanity check. By providing the size of the buffer used, runtime checks can be performed to ensure not overrun. Also change the pushed data pointer to be that of the structure that also contains the timestamp. Not an actual bug but semantically incorrect to push the channel data when we want the storage with the timestamp as well. Reviewed-by: David Lechner Link: https://patch.msgid.link/20250413103443.2420727-9-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ti-ads131e08.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/iio/adc/ti-ads131e08.c b/drivers/iio/adc/ti-ads131e08.c index c6096b64664e..085f0d6fb39e 100644 --- a/drivers/iio/adc/ti-ads131e08.c +++ b/drivers/iio/adc/ti-ads131e08.c @@ -664,8 +664,8 @@ static irqreturn_t ads131e08_trigger_handler(int irq, void *private) i++; } - iio_push_to_buffers_with_timestamp(indio_dev, st->tmp_buf.data, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &st->tmp_buf, sizeof(st->tmp_buf), + iio_get_time_ns(indio_dev)); out: iio_trigger_notify_done(indio_dev->trig); -- cgit v1.2.3 From c65d3f3f938600345146df9f5cac7681c9f1b15e Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 13 Apr 2025 11:34:32 +0100 Subject: iio: adc: Use iio_push_to_buffers_with_ts() to provide length for runtime checks. This new function allows us to perform debug checks in the helper to ensure that the overrun does not occur. Use it in all the simple cases where either a static buffer or a structure is used in the drivers. Reviewed-by: David Lechner Link: https://patch.msgid.link/20250413103443.2420727-10-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad4000.c | 3 ++- drivers/iio/adc/ad4030.c | 4 ++-- drivers/iio/adc/ad4695.c | 3 ++- drivers/iio/adc/ad7266.c | 7 +++---- drivers/iio/adc/ad7298.c | 4 ++-- drivers/iio/adc/ad7380.c | 4 ++-- drivers/iio/adc/ad7476.c | 4 ++-- drivers/iio/adc/ad7606.c | 4 ++-- drivers/iio/adc/ad7768-1.c | 5 +++-- drivers/iio/adc/ad7779.c | 3 ++- drivers/iio/adc/ad7923.c | 4 ++-- drivers/iio/adc/dln2-adc.c | 4 ++-- drivers/iio/adc/ina2xx-adc.c | 2 +- drivers/iio/adc/max1118.c | 4 ++-- drivers/iio/adc/max11410.c | 4 ++-- drivers/iio/adc/max1363.c | 4 ++-- drivers/iio/adc/mcp3911.c | 4 ++-- drivers/iio/adc/mxs-lradc-adc.c | 3 ++- drivers/iio/adc/pac1921.c | 3 ++- drivers/iio/adc/rockchip_saradc.c | 3 ++- drivers/iio/adc/rtq6056.c | 3 ++- drivers/iio/adc/stm32-adc.c | 4 ++-- drivers/iio/adc/ti-adc081c.c | 4 ++-- drivers/iio/adc/ti-adc0832.c | 4 ++-- drivers/iio/adc/ti-adc084s021.c | 4 ++-- drivers/iio/adc/ti-adc12138.c | 4 ++-- drivers/iio/adc/ti-ads1015.c | 4 ++-- drivers/iio/adc/ti-ads1119.c | 4 ++-- drivers/iio/adc/ti-ads124s08.c | 4 ++-- drivers/iio/adc/ti-ads8688.c | 4 ++-- drivers/iio/adc/ti-lmp92064.c | 4 ++-- drivers/iio/adc/ti-tlc4541.c | 4 ++-- drivers/iio/adc/ti-tsc2046.c | 5 +++-- drivers/iio/adc/vf610_adc.c | 6 +++--- 34 files changed, 71 insertions(+), 63 deletions(-) diff --git a/drivers/iio/adc/ad4000.c b/drivers/iio/adc/ad4000.c index e69a9d2a3e8c..93ecaf401f27 100644 --- a/drivers/iio/adc/ad4000.c +++ b/drivers/iio/adc/ad4000.c @@ -793,7 +793,8 @@ static irqreturn_t ad4000_trigger_handler(int irq, void *p) if (ret < 0) goto err_out; - iio_push_to_buffers_with_timestamp(indio_dev, &st->scan, pf->timestamp); + iio_push_to_buffers_with_ts(indio_dev, &st->scan, sizeof(st->scan), + pf->timestamp); err_out: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/adc/ad4030.c b/drivers/iio/adc/ad4030.c index 636f9f33e66a..5aa26dc3a2ce 100644 --- a/drivers/iio/adc/ad4030.c +++ b/drivers/iio/adc/ad4030.c @@ -707,8 +707,8 @@ static irqreturn_t ad4030_trigger_handler(int irq, void *p) if (ret) goto out; - iio_push_to_buffers_with_timestamp(indio_dev, st->rx_data.raw, - pf->timestamp); + iio_push_to_buffers_with_ts(indio_dev, &st->rx_data, sizeof(st->rx_data), + pf->timestamp); out: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/adc/ad4695.c b/drivers/iio/adc/ad4695.c index 8222c8ab2940..68c6625db0d7 100644 --- a/drivers/iio/adc/ad4695.c +++ b/drivers/iio/adc/ad4695.c @@ -801,7 +801,8 @@ static irqreturn_t ad4695_trigger_handler(int irq, void *p) if (ret) goto out; - iio_push_to_buffers_with_timestamp(indio_dev, st->buf, pf->timestamp); + iio_push_to_buffers_with_ts(indio_dev, st->buf, sizeof(st->buf), + pf->timestamp); out: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/adc/ad7266.c b/drivers/iio/adc/ad7266.c index 18559757f908..d8288d91b1ef 100644 --- a/drivers/iio/adc/ad7266.c +++ b/drivers/iio/adc/ad7266.c @@ -86,10 +86,9 @@ static irqreturn_t ad7266_trigger_handler(int irq, void *p) int ret; ret = spi_read(st->spi, st->data.sample, 4); - if (ret == 0) { - iio_push_to_buffers_with_timestamp(indio_dev, &st->data, - pf->timestamp); - } + if (ret == 0) + iio_push_to_buffers_with_ts(indio_dev, &st->data, sizeof(st->data), + pf->timestamp); iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/adc/ad7298.c b/drivers/iio/adc/ad7298.c index 28b88092b4aa..7c0538ea15c8 100644 --- a/drivers/iio/adc/ad7298.c +++ b/drivers/iio/adc/ad7298.c @@ -155,8 +155,8 @@ static irqreturn_t ad7298_trigger_handler(int irq, void *p) if (b_sent) goto done; - iio_push_to_buffers_with_timestamp(indio_dev, st->rx_buf, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, st->rx_buf, sizeof(st->rx_buf), + iio_get_time_ns(indio_dev)); done: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/adc/ad7380.c b/drivers/iio/adc/ad7380.c index 190ab411739f..f93e6c67766a 100644 --- a/drivers/iio/adc/ad7380.c +++ b/drivers/iio/adc/ad7380.c @@ -1361,8 +1361,8 @@ static irqreturn_t ad7380_trigger_handler(int irq, void *p) if (ret) goto out; - iio_push_to_buffers_with_timestamp(indio_dev, &st->scan_data, - pf->timestamp); + iio_push_to_buffers_with_ts(indio_dev, &st->scan_data, sizeof(st->scan_data), + pf->timestamp); out: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/adc/ad7476.c b/drivers/iio/adc/ad7476.c index 37b0515cf4fc..ddb607ac1860 100644 --- a/drivers/iio/adc/ad7476.c +++ b/drivers/iio/adc/ad7476.c @@ -99,8 +99,8 @@ static irqreturn_t ad7476_trigger_handler(int irq, void *p) if (b_sent < 0) goto done; - iio_push_to_buffers_with_timestamp(indio_dev, st->data, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, st->data, sizeof(st->data), + iio_get_time_ns(indio_dev)); done: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/adc/ad7606.c b/drivers/iio/adc/ad7606.c index d36b2e212a08..aa96247d6757 100644 --- a/drivers/iio/adc/ad7606.c +++ b/drivers/iio/adc/ad7606.c @@ -605,8 +605,8 @@ static irqreturn_t ad7606_trigger_handler(int irq, void *p) if (ret) goto error_ret; - iio_push_to_buffers_with_timestamp(indio_dev, &st->data, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &st->data, sizeof(st->data), + iio_get_time_ns(indio_dev)); error_ret: iio_trigger_notify_done(indio_dev->trig); /* The rising edge of the CONVST signal starts a new conversion. */ diff --git a/drivers/iio/adc/ad7768-1.c b/drivers/iio/adc/ad7768-1.c index 09e4ab76e2b6..47a6ad433585 100644 --- a/drivers/iio/adc/ad7768-1.c +++ b/drivers/iio/adc/ad7768-1.c @@ -533,8 +533,9 @@ static irqreturn_t ad7768_trigger_handler(int irq, void *p) if (ret < 0) goto out; - iio_push_to_buffers_with_timestamp(indio_dev, &st->data.scan, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &st->data.scan, + sizeof(st->data.scan), + iio_get_time_ns(indio_dev)); out: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/adc/ad7779.c b/drivers/iio/adc/ad7779.c index a5d87faa5e12..845adc510239 100644 --- a/drivers/iio/adc/ad7779.c +++ b/drivers/iio/adc/ad7779.c @@ -595,7 +595,8 @@ static irqreturn_t ad7779_trigger_handler(int irq, void *p) goto exit_handler; } - iio_push_to_buffers_with_timestamp(indio_dev, &st->data, pf->timestamp); + iio_push_to_buffers_with_ts(indio_dev, &st->data, sizeof(st->data), + pf->timestamp); exit_handler: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/adc/ad7923.c b/drivers/iio/adc/ad7923.c index 87945efb940b..0369151c7db1 100644 --- a/drivers/iio/adc/ad7923.c +++ b/drivers/iio/adc/ad7923.c @@ -207,8 +207,8 @@ static irqreturn_t ad7923_trigger_handler(int irq, void *p) if (b_sent) goto done; - iio_push_to_buffers_with_timestamp(indio_dev, st->rx_buf, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, st->rx_buf, sizeof(st->rx_buf), + iio_get_time_ns(indio_dev)); done: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/adc/dln2-adc.c b/drivers/iio/adc/dln2-adc.c index a1e48a756a7b..5ffb4b5f5c99 100644 --- a/drivers/iio/adc/dln2-adc.c +++ b/drivers/iio/adc/dln2-adc.c @@ -488,8 +488,8 @@ static irqreturn_t dln2_adc_trigger_h(int irq, void *p) (void *)dev_data.values + t->from, t->length); } - iio_push_to_buffers_with_timestamp(indio_dev, &data, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &data, sizeof(data), + iio_get_time_ns(indio_dev)); done: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/adc/ina2xx-adc.c b/drivers/iio/adc/ina2xx-adc.c index 40d14faa71c5..857e1b69d6cd 100644 --- a/drivers/iio/adc/ina2xx-adc.c +++ b/drivers/iio/adc/ina2xx-adc.c @@ -766,7 +766,7 @@ static int ina2xx_work_buffer(struct iio_dev *indio_dev) chip->scan.chan[i++] = val; } - iio_push_to_buffers_with_timestamp(indio_dev, &chip->scan, time); + iio_push_to_buffers_with_ts(indio_dev, &chip->scan, sizeof(chip->scan), time); return 0; }; diff --git a/drivers/iio/adc/max1118.c b/drivers/iio/adc/max1118.c index 565ca2e21c0c..7d7001e8e3d9 100644 --- a/drivers/iio/adc/max1118.c +++ b/drivers/iio/adc/max1118.c @@ -188,8 +188,8 @@ static irqreturn_t max1118_trigger_handler(int irq, void *p) adc->scan.channels[i] = ret; i++; } - iio_push_to_buffers_with_timestamp(indio_dev, &adc->scan, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &adc->scan, sizeof(adc->scan), + iio_get_time_ns(indio_dev)); out: mutex_unlock(&adc->lock); diff --git a/drivers/iio/adc/max11410.c b/drivers/iio/adc/max11410.c index 437d9f24b5a1..511b2f14dfaf 100644 --- a/drivers/iio/adc/max11410.c +++ b/drivers/iio/adc/max11410.c @@ -632,8 +632,8 @@ static irqreturn_t max11410_trigger_handler(int irq, void *p) goto out; } - iio_push_to_buffers_with_timestamp(indio_dev, &st->scan, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &st->scan, sizeof(st->scan), + iio_get_time_ns(indio_dev)); out: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/adc/max1363.c b/drivers/iio/adc/max1363.c index d0546c681625..a7e9912fb44a 100644 --- a/drivers/iio/adc/max1363.c +++ b/drivers/iio/adc/max1363.c @@ -1498,8 +1498,8 @@ static irqreturn_t max1363_trigger_handler(int irq, void *p) if (b_sent < 0) goto done; - iio_push_to_buffers_with_timestamp(indio_dev, &st->data, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &st->data, sizeof(st->data), + iio_get_time_ns(indio_dev)); done: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/adc/mcp3911.c b/drivers/iio/adc/mcp3911.c index 6748b44d568d..be18635ae616 100644 --- a/drivers/iio/adc/mcp3911.c +++ b/drivers/iio/adc/mcp3911.c @@ -516,8 +516,8 @@ static irqreturn_t mcp3911_trigger_handler(int irq, void *p) adc->scan.channels[i] = get_unaligned_be24(&adc->rx_buf[scan_chan->channel * 3]); i++; } - iio_push_to_buffers_with_timestamp(indio_dev, &adc->scan, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &adc->scan, sizeof(adc->scan), + iio_get_time_ns(indio_dev)); out: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/adc/mxs-lradc-adc.c b/drivers/iio/adc/mxs-lradc-adc.c index 8f1e6acea53b..92baf3f5f560 100644 --- a/drivers/iio/adc/mxs-lradc-adc.c +++ b/drivers/iio/adc/mxs-lradc-adc.c @@ -425,7 +425,8 @@ static irqreturn_t mxs_lradc_adc_trigger_handler(int irq, void *p) j++; } - iio_push_to_buffers_with_timestamp(iio, adc->buffer, pf->timestamp); + iio_push_to_buffers_with_ts(iio, adc->buffer, sizeof(adc->buffer), + pf->timestamp); iio_trigger_notify_done(iio->trig); diff --git a/drivers/iio/adc/pac1921.c b/drivers/iio/adc/pac1921.c index ef75e9e51c24..72aa4ca2e5a4 100644 --- a/drivers/iio/adc/pac1921.c +++ b/drivers/iio/adc/pac1921.c @@ -1044,7 +1044,8 @@ static irqreturn_t pac1921_trigger_handler(int irq, void *p) priv->scan.chan[ch++] = val; } - iio_push_to_buffers_with_timestamp(idev, &priv->scan, pf->timestamp); + iio_push_to_buffers_with_ts(idev, &priv->scan, sizeof(priv->scan), + pf->timestamp); done: iio_trigger_notify_done(idev->trig); diff --git a/drivers/iio/adc/rockchip_saradc.c b/drivers/iio/adc/rockchip_saradc.c index 9a099df79518..2162bff69913 100644 --- a/drivers/iio/adc/rockchip_saradc.c +++ b/drivers/iio/adc/rockchip_saradc.c @@ -425,7 +425,8 @@ static irqreturn_t rockchip_saradc_trigger_handler(int irq, void *p) j++; } - iio_push_to_buffers_with_timestamp(i_dev, &data, iio_get_time_ns(i_dev)); + iio_push_to_buffers_with_ts(i_dev, &data, sizeof(data), + iio_get_time_ns(i_dev)); out: mutex_unlock(&info->lock); diff --git a/drivers/iio/adc/rtq6056.c b/drivers/iio/adc/rtq6056.c index 54239df61d86..6ff47415a222 100644 --- a/drivers/iio/adc/rtq6056.c +++ b/drivers/iio/adc/rtq6056.c @@ -666,7 +666,8 @@ static irqreturn_t rtq6056_buffer_trigger_handler(int irq, void *p) data.vals[i++] = raw; } - iio_push_to_buffers_with_timestamp(indio_dev, &data, iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &data, sizeof(data), + iio_get_time_ns(indio_dev)); out: pm_runtime_mark_last_busy(dev); diff --git a/drivers/iio/adc/stm32-adc.c b/drivers/iio/adc/stm32-adc.c index 27aec9a18a0f..5159908a2a61 100644 --- a/drivers/iio/adc/stm32-adc.c +++ b/drivers/iio/adc/stm32-adc.c @@ -1858,8 +1858,8 @@ static irqreturn_t stm32_adc_trigger_handler(int irq, void *p) /* reset buffer index */ adc->bufi = 0; - iio_push_to_buffers_with_timestamp(indio_dev, adc->buffer, - pf->timestamp); + iio_push_to_buffers_with_ts(indio_dev, adc->buffer, sizeof(adc->buffer), + pf->timestamp); iio_trigger_notify_done(indio_dev->trig); /* re-enable eoc irq */ diff --git a/drivers/iio/adc/ti-adc081c.c b/drivers/iio/adc/ti-adc081c.c index 1af9be071d8d..4f514db5c26e 100644 --- a/drivers/iio/adc/ti-adc081c.c +++ b/drivers/iio/adc/ti-adc081c.c @@ -140,8 +140,8 @@ static irqreturn_t adc081c_trigger_handler(int irq, void *p) if (ret < 0) goto out; data->scan.channel = ret; - iio_push_to_buffers_with_timestamp(indio_dev, &data->scan, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &data->scan, sizeof(data->scan), + iio_get_time_ns(indio_dev)); out: iio_trigger_notify_done(indio_dev->trig); return IRQ_HANDLED; diff --git a/drivers/iio/adc/ti-adc0832.c b/drivers/iio/adc/ti-adc0832.c index e2dbd070c7c4..cfcdafbe284b 100644 --- a/drivers/iio/adc/ti-adc0832.c +++ b/drivers/iio/adc/ti-adc0832.c @@ -225,8 +225,8 @@ static irqreturn_t adc0832_trigger_handler(int irq, void *p) adc->data[i] = ret; i++; } - iio_push_to_buffers_with_timestamp(indio_dev, adc->data, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, adc->data, sizeof(adc->data), + iio_get_time_ns(indio_dev)); out: mutex_unlock(&adc->lock); diff --git a/drivers/iio/adc/ti-adc084s021.c b/drivers/iio/adc/ti-adc084s021.c index 9c845ee01697..50a474f4d9f5 100644 --- a/drivers/iio/adc/ti-adc084s021.c +++ b/drivers/iio/adc/ti-adc084s021.c @@ -151,8 +151,8 @@ static irqreturn_t adc084s021_buffer_trigger_handler(int irq, void *pollfunc) if (adc084s021_adc_conversion(adc, adc->scan.channels) < 0) dev_err(&adc->spi->dev, "Failed to read data\n"); - iio_push_to_buffers_with_timestamp(indio_dev, &adc->scan, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &adc->scan, sizeof(adc->scan), + iio_get_time_ns(indio_dev)); mutex_unlock(&adc->lock); iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/adc/ti-adc12138.c b/drivers/iio/adc/ti-adc12138.c index 7f065f457b36..9dc465a10ffc 100644 --- a/drivers/iio/adc/ti-adc12138.c +++ b/drivers/iio/adc/ti-adc12138.c @@ -376,8 +376,8 @@ static irqreturn_t adc12138_trigger_handler(int irq, void *p) } } - iio_push_to_buffers_with_timestamp(indio_dev, adc->data, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, adc->data, sizeof(adc->data), + iio_get_time_ns(indio_dev)); out: mutex_unlock(&adc->lock); diff --git a/drivers/iio/adc/ti-ads1015.c b/drivers/iio/adc/ti-ads1015.c index 705c146c7dc2..21181cc3bd85 100644 --- a/drivers/iio/adc/ti-ads1015.c +++ b/drivers/iio/adc/ti-ads1015.c @@ -467,8 +467,8 @@ static irqreturn_t ads1015_trigger_handler(int irq, void *p) scan.chan = res; mutex_unlock(&data->lock); - iio_push_to_buffers_with_timestamp(indio_dev, &scan, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &scan, sizeof(scan), + iio_get_time_ns(indio_dev)); err: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/adc/ti-ads1119.c b/drivers/iio/adc/ti-ads1119.c index f120e7e21cff..d280c949cf47 100644 --- a/drivers/iio/adc/ti-ads1119.c +++ b/drivers/iio/adc/ti-ads1119.c @@ -534,8 +534,8 @@ static irqreturn_t ads1119_trigger_handler(int irq, void *private) scan.sample = ret; - iio_push_to_buffers_with_timestamp(indio_dev, &scan, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &scan, sizeof(scan), + iio_get_time_ns(indio_dev)); done: iio_trigger_notify_done(indio_dev->trig); return IRQ_HANDLED; diff --git a/drivers/iio/adc/ti-ads124s08.c b/drivers/iio/adc/ti-ads124s08.c index 77c299bb4ebc..8ea1269f74db 100644 --- a/drivers/iio/adc/ti-ads124s08.c +++ b/drivers/iio/adc/ti-ads124s08.c @@ -297,8 +297,8 @@ static irqreturn_t ads124s_trigger_handler(int irq, void *p) j++; } - iio_push_to_buffers_with_timestamp(indio_dev, priv->buffer, - pf->timestamp); + iio_push_to_buffers_with_ts(indio_dev, priv->buffer, sizeof(priv->buffer), + pf->timestamp); iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/adc/ti-ads8688.c b/drivers/iio/adc/ti-ads8688.c index a31658b760a4..b0bf46cae0b6 100644 --- a/drivers/iio/adc/ti-ads8688.c +++ b/drivers/iio/adc/ti-ads8688.c @@ -389,8 +389,8 @@ static irqreturn_t ads8688_trigger_handler(int irq, void *p) j++; } - iio_push_to_buffers_with_timestamp(indio_dev, buffer, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, buffer, sizeof(buffer), + iio_get_time_ns(indio_dev)); iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/adc/ti-lmp92064.c b/drivers/iio/adc/ti-lmp92064.c index 86eef3320de9..3f375c1f586c 100644 --- a/drivers/iio/adc/ti-lmp92064.c +++ b/drivers/iio/adc/ti-lmp92064.c @@ -209,8 +209,8 @@ static irqreturn_t lmp92064_trigger_handler(int irq, void *p) if (ret) goto err; - iio_push_to_buffers_with_timestamp(indio_dev, &data, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &data, sizeof(data), + iio_get_time_ns(indio_dev)); err: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/adc/ti-tlc4541.c b/drivers/iio/adc/ti-tlc4541.c index 5a138be983ed..f67945c62c99 100644 --- a/drivers/iio/adc/ti-tlc4541.c +++ b/drivers/iio/adc/ti-tlc4541.c @@ -99,8 +99,8 @@ static irqreturn_t tlc4541_trigger_handler(int irq, void *p) if (ret < 0) goto done; - iio_push_to_buffers_with_timestamp(indio_dev, st->rx_buf, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, st->rx_buf, sizeof(st->rx_buf), + iio_get_time_ns(indio_dev)); done: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/adc/ti-tsc2046.c b/drivers/iio/adc/ti-tsc2046.c index 49560059f4b7..84a9a5e66526 100644 --- a/drivers/iio/adc/ti-tsc2046.c +++ b/drivers/iio/adc/ti-tsc2046.c @@ -418,8 +418,9 @@ static int tsc2046_adc_scan(struct iio_dev *indio_dev) for (group = 0; group < priv->groups; group++) priv->scan_buf.data[group] = tsc2046_adc_get_val(priv, group); - ret = iio_push_to_buffers_with_timestamp(indio_dev, &priv->scan_buf, - iio_get_time_ns(indio_dev)); + ret = iio_push_to_buffers_with_ts(indio_dev, &priv->scan_buf, + sizeof(priv->scan_buf), + iio_get_time_ns(indio_dev)); /* If the consumer is kfifo, we may get a EBUSY here - ignore it. */ if (ret < 0 && ret != -EBUSY) { dev_err_ratelimited(dev, "Failed to push scan buffer %pe\n", diff --git a/drivers/iio/adc/vf610_adc.c b/drivers/iio/adc/vf610_adc.c index 805e1973b090..6404b015234a 100644 --- a/drivers/iio/adc/vf610_adc.c +++ b/drivers/iio/adc/vf610_adc.c @@ -592,9 +592,9 @@ static irqreturn_t vf610_adc_isr(int irq, void *dev_id) info->value = vf610_adc_read_data(info); if (iio_buffer_enabled(indio_dev)) { info->scan.chan = info->value; - iio_push_to_buffers_with_timestamp(indio_dev, - &info->scan, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &info->scan, + sizeof(info->scan), + iio_get_time_ns(indio_dev)); iio_trigger_notify_done(indio_dev->trig); } else complete(&info->completion); -- cgit v1.2.3 From edfafbd82f1d416ff4710b93d9fb38e742751685 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 13 Apr 2025 11:34:33 +0100 Subject: iio: accel: Use iio_push_to_buffers_with_ts() to provide length for runtime checks. This new function allows us to perform debug checks in the helper to ensure that the overrun does not occur. Use it in all the simple cases where either a static buffer or a structure is used in the drivers. Reviewed-by: David Lechner Link: https://patch.msgid.link/20250413103443.2420727-11-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/accel/adxl355_core.c | 4 ++-- drivers/iio/accel/bma180.c | 2 +- drivers/iio/accel/bma220_spi.c | 4 ++-- drivers/iio/accel/bma400_core.c | 5 +++-- drivers/iio/accel/fxls8962af-core.c | 4 ++-- drivers/iio/accel/kxcjk-1013.c | 4 ++-- drivers/iio/accel/kxsd9.c | 5 ++--- drivers/iio/accel/mma7455_core.c | 5 +++-- drivers/iio/accel/mma8452.c | 5 +++-- drivers/iio/accel/msa311.c | 4 ++-- drivers/iio/accel/mxc4005.c | 4 ++-- drivers/iio/accel/sca3300.c | 5 +++-- drivers/iio/accel/stk8312.c | 4 ++-- drivers/iio/accel/stk8ba50.c | 4 ++-- 14 files changed, 31 insertions(+), 28 deletions(-) diff --git a/drivers/iio/accel/adxl355_core.c b/drivers/iio/accel/adxl355_core.c index e8cd21fa77a6..ae949ada6db5 100644 --- a/drivers/iio/accel/adxl355_core.c +++ b/drivers/iio/accel/adxl355_core.c @@ -666,8 +666,8 @@ static irqreturn_t adxl355_trigger_handler(int irq, void *p) if (ret) goto out_unlock_notify; - iio_push_to_buffers_with_timestamp(indio_dev, &data->buffer, - pf->timestamp); + iio_push_to_buffers_with_ts(indio_dev, &data->buffer, + sizeof(data->buffer), pf->timestamp); out_unlock_notify: mutex_unlock(&data->lock); diff --git a/drivers/iio/accel/bma180.c b/drivers/iio/accel/bma180.c index aa664a923f91..93a868678722 100644 --- a/drivers/iio/accel/bma180.c +++ b/drivers/iio/accel/bma180.c @@ -887,7 +887,7 @@ static irqreturn_t bma180_trigger_handler(int irq, void *p) mutex_unlock(&data->mutex); - iio_push_to_buffers_with_timestamp(indio_dev, &data->scan, time_ns); + iio_push_to_buffers_with_ts(indio_dev, &data->scan, sizeof(data->scan), time_ns); err: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/accel/bma220_spi.c b/drivers/iio/accel/bma220_spi.c index 978108fb74e9..38f7498431ee 100644 --- a/drivers/iio/accel/bma220_spi.c +++ b/drivers/iio/accel/bma220_spi.c @@ -103,8 +103,8 @@ static irqreturn_t bma220_trigger_handler(int irq, void *p) if (ret < 0) goto err; - iio_push_to_buffers_with_timestamp(indio_dev, &data->scan, - pf->timestamp); + iio_push_to_buffers_with_ts(indio_dev, &data->scan, sizeof(data->scan), + pf->timestamp); err: mutex_unlock(&data->lock); iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/accel/bma400_core.c b/drivers/iio/accel/bma400_core.c index 23f5e1ce9cc4..85e23badf733 100644 --- a/drivers/iio/accel/bma400_core.c +++ b/drivers/iio/accel/bma400_core.c @@ -1591,8 +1591,9 @@ static irqreturn_t bma400_trigger_handler(int irq, void *p) data->buffer.temperature = temp; } - iio_push_to_buffers_with_timestamp(indio_dev, &data->buffer, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &data->buffer, + sizeof(data->buffer), + iio_get_time_ns(indio_dev)); mutex_unlock(&data->mutex); iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/accel/fxls8962af-core.c b/drivers/iio/accel/fxls8962af-core.c index 48e4282964a0..6d23da3e7aa2 100644 --- a/drivers/iio/accel/fxls8962af-core.c +++ b/drivers/iio/accel/fxls8962af-core.c @@ -983,8 +983,8 @@ static int fxls8962af_fifo_flush(struct iio_dev *indio_dev) sizeof(data->scan.channels[0])); } - iio_push_to_buffers_with_timestamp(indio_dev, &data->scan, - tstamp); + iio_push_to_buffers_with_ts(indio_dev, &data->scan, + sizeof(data->scan), tstamp); tstamp += sample_period; } diff --git a/drivers/iio/accel/kxcjk-1013.c b/drivers/iio/accel/kxcjk-1013.c index f2496cad8ec2..971b76c98606 100644 --- a/drivers/iio/accel/kxcjk-1013.c +++ b/drivers/iio/accel/kxcjk-1013.c @@ -1253,8 +1253,8 @@ static irqreturn_t kxcjk1013_trigger_handler(int irq, void *p) if (ret < 0) goto err; - iio_push_to_buffers_with_timestamp(indio_dev, &data->scan, - data->timestamp); + iio_push_to_buffers_with_ts(indio_dev, &data->scan, sizeof(data->scan), + data->timestamp); err: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/accel/kxsd9.c b/drivers/iio/accel/kxsd9.c index fb14b875e20d..cfc31265cdd0 100644 --- a/drivers/iio/accel/kxsd9.c +++ b/drivers/iio/accel/kxsd9.c @@ -229,9 +229,8 @@ static irqreturn_t kxsd9_trigger_handler(int irq, void *p) goto out; } - iio_push_to_buffers_with_timestamp(indio_dev, - &hw_values, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &hw_values, sizeof(hw_values), + iio_get_time_ns(indio_dev)); out: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/accel/mma7455_core.c b/drivers/iio/accel/mma7455_core.c index 30746621052c..a2b5bdf14dde 100644 --- a/drivers/iio/accel/mma7455_core.c +++ b/drivers/iio/accel/mma7455_core.c @@ -103,8 +103,9 @@ static irqreturn_t mma7455_trigger_handler(int irq, void *p) if (ret) goto done; - iio_push_to_buffers_with_timestamp(indio_dev, &mma7455->scan, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &mma7455->scan, + sizeof(mma7455->scan), + iio_get_time_ns(indio_dev)); done: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/accel/mma8452.c b/drivers/iio/accel/mma8452.c index 05f5482f366e..aba444a980d9 100644 --- a/drivers/iio/accel/mma8452.c +++ b/drivers/iio/accel/mma8452.c @@ -1103,8 +1103,9 @@ static irqreturn_t mma8452_trigger_handler(int irq, void *p) if (ret < 0) goto done; - iio_push_to_buffers_with_timestamp(indio_dev, &data->buffer, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &data->buffer, + sizeof(data->buffer), + iio_get_time_ns(indio_dev)); done: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/accel/msa311.c b/drivers/iio/accel/msa311.c index d31c11fbbe68..c31c53abc3d0 100644 --- a/drivers/iio/accel/msa311.c +++ b/drivers/iio/accel/msa311.c @@ -919,8 +919,8 @@ static irqreturn_t msa311_buffer_thread(int irq, void *p) mutex_unlock(&msa311->lock); - iio_push_to_buffers_with_timestamp(indio_dev, &buf, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &buf, sizeof(buf), + iio_get_time_ns(indio_dev)); notify_done: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/accel/mxc4005.c b/drivers/iio/accel/mxc4005.c index c9c4bab08a81..1075c8ce0e37 100644 --- a/drivers/iio/accel/mxc4005.c +++ b/drivers/iio/accel/mxc4005.c @@ -335,8 +335,8 @@ static irqreturn_t mxc4005_trigger_handler(int irq, void *private) if (ret < 0) goto err; - iio_push_to_buffers_with_timestamp(indio_dev, &data->scan, - pf->timestamp); + iio_push_to_buffers_with_ts(indio_dev, &data->scan, sizeof(data->scan), + pf->timestamp); err: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/accel/sca3300.c b/drivers/iio/accel/sca3300.c index 9b00a3d7056d..1132bbaba75b 100644 --- a/drivers/iio/accel/sca3300.c +++ b/drivers/iio/accel/sca3300.c @@ -505,8 +505,9 @@ static irqreturn_t sca3300_trigger_handler(int irq, void *p) channels[i++] = val; } - iio_push_to_buffers_with_timestamp(indio_dev, data->buffer, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, data->buffer, + sizeof(data->buffer), + iio_get_time_ns(indio_dev)); out: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/accel/stk8312.c b/drivers/iio/accel/stk8312.c index d3ff1287c017..dfac2e44191f 100644 --- a/drivers/iio/accel/stk8312.c +++ b/drivers/iio/accel/stk8312.c @@ -460,8 +460,8 @@ static irqreturn_t stk8312_trigger_handler(int irq, void *p) } mutex_unlock(&data->lock); - iio_push_to_buffers_with_timestamp(indio_dev, &data->scan, - pf->timestamp); + iio_push_to_buffers_with_ts(indio_dev, &data->scan, sizeof(data->scan), + pf->timestamp); err: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/accel/stk8ba50.c b/drivers/iio/accel/stk8ba50.c index e5fed3eac2c8..05d4fd540eb2 100644 --- a/drivers/iio/accel/stk8ba50.c +++ b/drivers/iio/accel/stk8ba50.c @@ -340,8 +340,8 @@ static irqreturn_t stk8ba50_trigger_handler(int irq, void *p) data->scan.chans[i++] = ret; } } - iio_push_to_buffers_with_timestamp(indio_dev, &data->scan, - pf->timestamp); + iio_push_to_buffers_with_ts(indio_dev, &data->scan, sizeof(data->scan), + pf->timestamp); err: mutex_unlock(&data->lock); iio_trigger_notify_done(indio_dev->trig); -- cgit v1.2.3 From 838a65c1d650b72849fe79ec4d52583542d7e346 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 13 Apr 2025 11:34:34 +0100 Subject: iio: accel: hid: Use iio_push_to_buffers_with_ts() to provide length for runtime checks. This new function allows us to perform debug checks in the helper to ensure that the overrun does not occur. For this case, the length being provided is already passed into the caller function so reuse that. Reviewed-by: David Lechner Link: https://patch.msgid.link/20250413103443.2420727-12-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/accel/hid-sensor-accel-3d.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/accel/hid-sensor-accel-3d.c b/drivers/iio/accel/hid-sensor-accel-3d.c index 3214506d133d..2ff591b3458f 100644 --- a/drivers/iio/accel/hid-sensor-accel-3d.c +++ b/drivers/iio/accel/hid-sensor-accel-3d.c @@ -228,7 +228,7 @@ static void hid_sensor_push_data(struct iio_dev *indio_dev, void *data, int len, int64_t timestamp) { dev_dbg(&indio_dev->dev, "hid_sensor_push_data\n"); - iio_push_to_buffers_with_timestamp(indio_dev, data, timestamp); + iio_push_to_buffers_with_ts(indio_dev, data, len, timestamp); } /* Callback handler to send event after all samples are received and captured */ -- cgit v1.2.3 From cb4691913d9edafe1d126548dfcdc748733da00b Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 13 Apr 2025 11:34:35 +0100 Subject: iio: chemical: Use iio_push_to_buffers_with_ts() to provide length for runtime checks. This new function allows us to perform debug checks in the helper to ensure that the overrun does not occur. Use it in all the simple cases where either a static buffer or a structure is used in the drivers. Reviewed-by: David Lechner Link: https://patch.msgid.link/20250413103443.2420727-13-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/chemical/atlas-sensor.c | 5 +++-- drivers/iio/chemical/bme680_core.c | 4 ++-- drivers/iio/chemical/ccs811.c | 4 ++-- drivers/iio/chemical/ens160_core.c | 4 ++-- drivers/iio/chemical/pms7003.c | 4 ++-- drivers/iio/chemical/scd30_core.c | 3 ++- drivers/iio/chemical/scd4x.c | 3 ++- drivers/iio/chemical/sps30.c | 4 ++-- 8 files changed, 17 insertions(+), 14 deletions(-) diff --git a/drivers/iio/chemical/atlas-sensor.c b/drivers/iio/chemical/atlas-sensor.c index bde473f9483f..cb6662b92137 100644 --- a/drivers/iio/chemical/atlas-sensor.c +++ b/drivers/iio/chemical/atlas-sensor.c @@ -458,8 +458,9 @@ static irqreturn_t atlas_trigger_handler(int irq, void *private) &data->buffer, sizeof(__be32) * channels); if (!ret) - iio_push_to_buffers_with_timestamp(indio_dev, data->buffer, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, data->buffer, + sizeof(data->buffer), + iio_get_time_ns(indio_dev)); iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/chemical/bme680_core.c b/drivers/iio/chemical/bme680_core.c index 9d73fd2cf52c..3e850562ab00 100644 --- a/drivers/iio/chemical/bme680_core.c +++ b/drivers/iio/chemical/bme680_core.c @@ -1120,8 +1120,8 @@ static irqreturn_t bme680_trigger_handler(int irq, void *p) gas_range = FIELD_GET(BME680_GAS_RANGE_MASK, gas_regs_val); data->scan.chan[3] = bme680_compensate_gas(data, adc_gas_res, gas_range); - iio_push_to_buffers_with_timestamp(indio_dev, &data->scan, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &data->scan, sizeof(data->scan), + iio_get_time_ns(indio_dev)); out: iio_trigger_notify_done(indio_dev->trig); return IRQ_HANDLED; diff --git a/drivers/iio/chemical/ccs811.c b/drivers/iio/chemical/ccs811.c index 1eab256a1e00..998c9239c4c7 100644 --- a/drivers/iio/chemical/ccs811.c +++ b/drivers/iio/chemical/ccs811.c @@ -343,8 +343,8 @@ static irqreturn_t ccs811_trigger_handler(int irq, void *p) goto err; } - iio_push_to_buffers_with_timestamp(indio_dev, &data->scan, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &data->scan, sizeof(data->scan), + iio_get_time_ns(indio_dev)); err: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/chemical/ens160_core.c b/drivers/iio/chemical/ens160_core.c index 152f81ff57e3..6cec60074827 100644 --- a/drivers/iio/chemical/ens160_core.c +++ b/drivers/iio/chemical/ens160_core.c @@ -267,8 +267,8 @@ static irqreturn_t ens160_trigger_handler(int irq, void *p) if (ret) goto err; - iio_push_to_buffers_with_timestamp(indio_dev, &data->scan, - pf->timestamp); + iio_push_to_buffers_with_ts(indio_dev, &data->scan, sizeof(data->scan), + pf->timestamp); err: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/chemical/pms7003.c b/drivers/iio/chemical/pms7003.c index d0bd94912e0a..93075f604555 100644 --- a/drivers/iio/chemical/pms7003.c +++ b/drivers/iio/chemical/pms7003.c @@ -126,8 +126,8 @@ static irqreturn_t pms7003_trigger_handler(int irq, void *p) pms7003_get_pm(frame->data + PMS7003_PM10_OFFSET); mutex_unlock(&state->lock); - iio_push_to_buffers_with_timestamp(indio_dev, &state->scan, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &state->scan, sizeof(state->scan), + iio_get_time_ns(indio_dev)); err: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/chemical/scd30_core.c b/drivers/iio/chemical/scd30_core.c index 3fed6b63710f..8316720b1fa3 100644 --- a/drivers/iio/chemical/scd30_core.c +++ b/drivers/iio/chemical/scd30_core.c @@ -601,7 +601,8 @@ static irqreturn_t scd30_trigger_handler(int irq, void *p) if (ret) goto out; - iio_push_to_buffers_with_timestamp(indio_dev, &scan, iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &scan, sizeof(scan), + iio_get_time_ns(indio_dev)); out: iio_trigger_notify_done(indio_dev->trig); return IRQ_HANDLED; diff --git a/drivers/iio/chemical/scd4x.c b/drivers/iio/chemical/scd4x.c index 4877bd3e907b..2463149519b6 100644 --- a/drivers/iio/chemical/scd4x.c +++ b/drivers/iio/chemical/scd4x.c @@ -675,7 +675,8 @@ static irqreturn_t scd4x_trigger_handler(int irq, void *p) if (ret) goto out; - iio_push_to_buffers_with_timestamp(indio_dev, &scan, iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &scan, sizeof(scan), + iio_get_time_ns(indio_dev)); out: iio_trigger_notify_done(indio_dev->trig); return IRQ_HANDLED; diff --git a/drivers/iio/chemical/sps30.c b/drivers/iio/chemical/sps30.c index 6f4f2ba2c09d..2554ef74e141 100644 --- a/drivers/iio/chemical/sps30.c +++ b/drivers/iio/chemical/sps30.c @@ -117,8 +117,8 @@ static irqreturn_t sps30_trigger_handler(int irq, void *p) if (ret) goto err; - iio_push_to_buffers_with_timestamp(indio_dev, &scan, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &scan, sizeof(scan), + iio_get_time_ns(indio_dev)); err: iio_trigger_notify_done(indio_dev->trig); -- cgit v1.2.3 From 1a715f5a47269a8d0088020198c3bfde9b34454d Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 13 Apr 2025 11:34:37 +0100 Subject: iio: temperature: Use iio_push_to_buffers_with_ts() to provide length for runtime checks. This new function allows us to perform debug checks in the helper to ensure that the overrun does not occur. Use it in all the simple cases where either a static buffer or a structure is used in the drivers. Reviewed-by: David Lechner Link: https://patch.msgid.link/20250413103443.2420727-15-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/temperature/hid-sensor-temperature.c | 5 +++-- drivers/iio/temperature/maxim_thermocouple.c | 5 +++-- drivers/iio/temperature/tmp006.c | 4 ++-- 3 files changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/iio/temperature/hid-sensor-temperature.c b/drivers/iio/temperature/hid-sensor-temperature.c index 09f470bb0841..9f628a8e5cfb 100644 --- a/drivers/iio/temperature/hid-sensor-temperature.c +++ b/drivers/iio/temperature/hid-sensor-temperature.c @@ -131,8 +131,9 @@ static int temperature_proc_event(struct hid_sensor_hub_device *hsdev, struct temperature_state *temp_st = iio_priv(indio_dev); if (atomic_read(&temp_st->common_attributes.data_ready)) - iio_push_to_buffers_with_timestamp(indio_dev, &temp_st->scan, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &temp_st->scan, + sizeof(temp_st->scan), + iio_get_time_ns(indio_dev)); return 0; } diff --git a/drivers/iio/temperature/maxim_thermocouple.c b/drivers/iio/temperature/maxim_thermocouple.c index 0bbbadeed940..94cc7d261123 100644 --- a/drivers/iio/temperature/maxim_thermocouple.c +++ b/drivers/iio/temperature/maxim_thermocouple.c @@ -168,8 +168,9 @@ static irqreturn_t maxim_thermocouple_trigger_handler(int irq, void *private) ret = spi_read(data->spi, data->buffer, data->chip->read_size); if (!ret) { - iio_push_to_buffers_with_timestamp(indio_dev, data->buffer, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, data->buffer, + sizeof(data->buffer), + iio_get_time_ns(indio_dev)); } iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/temperature/tmp006.c b/drivers/iio/temperature/tmp006.c index b5c94b7492f5..29bff9d8859d 100644 --- a/drivers/iio/temperature/tmp006.c +++ b/drivers/iio/temperature/tmp006.c @@ -269,8 +269,8 @@ static irqreturn_t tmp006_trigger_handler(int irq, void *p) goto err; scan.channels[1] = ret; - iio_push_to_buffers_with_timestamp(indio_dev, &scan, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &scan, sizeof(scan), + iio_get_time_ns(indio_dev)); err: iio_trigger_notify_done(indio_dev->trig); return IRQ_HANDLED; -- cgit v1.2.3 From 85eb82b3c2a4af98fce7f9a578d5970425ca36a8 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 13 Apr 2025 11:34:38 +0100 Subject: iio: resolver: Use iio_push_to_buffers_with_ts() to provide length for runtime checks. This new function allows us to perform debug checks in the helper to ensure that the overrun does not occur. Use it in all the simple cases where either a static buffer or a structure is used in the drivers. Reviewed-by: David Lechner Link: https://patch.msgid.link/20250413103443.2420727-16-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/resolver/ad2s1210.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/iio/resolver/ad2s1210.c b/drivers/iio/resolver/ad2s1210.c index 80a2f7ebda8f..9b028c8bb1db 100644 --- a/drivers/iio/resolver/ad2s1210.c +++ b/drivers/iio/resolver/ad2s1210.c @@ -1340,7 +1340,8 @@ static irqreturn_t ad2s1210_trigger_handler(int irq, void *p) } ad2s1210_push_events(indio_dev, st->sample.fault, pf->timestamp); - iio_push_to_buffers_with_timestamp(indio_dev, &st->scan, pf->timestamp); + iio_push_to_buffers_with_ts(indio_dev, &st->scan, sizeof(st->scan), + pf->timestamp); error_ret: iio_trigger_notify_done(indio_dev->trig); -- cgit v1.2.3 From 175c3f72154e4ef64ba56b0ee35110082ea475b4 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 13 Apr 2025 11:34:39 +0100 Subject: iio: proximity: irsd200: Use a struct for scan and iio_push_to_buffers_with_ts() The driver previously used an array of two s64, then type cast the pointer to write an s16 to the start. The code is made more readable using a structure. At the same time switch to the new iio_push_to_buffers_with_ts() helper to enable runtime checking of the size of the source buffer. Note that this approach uses a structure with holes, so use memset() to ensure those do not contain old kernel data as this data is passed to userspace. Reviewed-by: David Lechner Link: https://patch.msgid.link/20250413103443.2420727-17-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/proximity/irsd200.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/iio/proximity/irsd200.c b/drivers/iio/proximity/irsd200.c index 1b1b6dfdfa78..0d30b91dbcbc 100644 --- a/drivers/iio/proximity/irsd200.c +++ b/drivers/iio/proximity/irsd200.c @@ -760,15 +760,19 @@ static irqreturn_t irsd200_trigger_handler(int irq, void *pollf) { struct iio_dev *indio_dev = ((struct iio_poll_func *)pollf)->indio_dev; struct irsd200_data *data = iio_priv(indio_dev); - s64 buf[2] = {}; + struct { + s16 channel; + aligned_s64 ts; + } scan; int ret; - ret = irsd200_read_data(data, (s16 *)buf); + memset(&scan, 0, sizeof(scan)); + ret = irsd200_read_data(data, &scan.channel); if (ret) goto end; - iio_push_to_buffers_with_timestamp(indio_dev, buf, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &scan, sizeof(scan), + iio_get_time_ns(indio_dev)); end: iio_trigger_notify_done(indio_dev->trig); -- cgit v1.2.3 From fc11c42dd13710342c05008a0bccf426247cb101 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 13 Apr 2025 11:34:40 +0100 Subject: iio: proximity: Use iio_push_to_buffers_with_ts() to provide length for runtime checks. This new function allows us to perform debug checks in the helper to ensure that the overrun does not occur. Use it in all the simple cases where either a static buffer or a structure is used in the drivers. Reviewed-by: David Lechner Link: https://patch.msgid.link/20250413103443.2420727-18-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/proximity/as3935.c | 4 ++-- drivers/iio/proximity/hx9023s.c | 4 ++-- drivers/iio/proximity/mb1232.c | 4 ++-- drivers/iio/proximity/pulsedlight-lidar-lite-v2.c | 5 +++-- drivers/iio/proximity/srf08.c | 4 ++-- drivers/iio/proximity/sx_common.c | 4 ++-- drivers/iio/proximity/vl53l0x-i2c.c | 4 ++-- 7 files changed, 15 insertions(+), 14 deletions(-) diff --git a/drivers/iio/proximity/as3935.c b/drivers/iio/proximity/as3935.c index d48d7b572878..f1018b14aecf 100644 --- a/drivers/iio/proximity/as3935.c +++ b/drivers/iio/proximity/as3935.c @@ -231,8 +231,8 @@ static irqreturn_t as3935_trigger_handler(int irq, void *private) goto err_read; st->scan.chan = val & AS3935_DATA_MASK; - iio_push_to_buffers_with_timestamp(indio_dev, &st->scan, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &st->scan, sizeof(st->scan), + iio_get_time_ns(indio_dev)); err_read: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/proximity/hx9023s.c b/drivers/iio/proximity/hx9023s.c index f2037fd99a8d..33781c314728 100644 --- a/drivers/iio/proximity/hx9023s.c +++ b/drivers/iio/proximity/hx9023s.c @@ -953,8 +953,8 @@ static irqreturn_t hx9023s_trigger_handler(int irq, void *private) data->buffer.channels[i++] = cpu_to_le16(data->ch_data[index].diff); } - iio_push_to_buffers_with_timestamp(indio_dev, &data->buffer, - pf->timestamp); + iio_push_to_buffers_with_ts(indio_dev, &data->buffer, + sizeof(data->buffer), pf->timestamp); out: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/proximity/mb1232.c b/drivers/iio/proximity/mb1232.c index 24524edae0b4..01783486bc7d 100644 --- a/drivers/iio/proximity/mb1232.c +++ b/drivers/iio/proximity/mb1232.c @@ -125,8 +125,8 @@ static irqreturn_t mb1232_trigger_handler(int irq, void *p) if (data->scan.distance < 0) goto err; - iio_push_to_buffers_with_timestamp(indio_dev, &data->scan, - pf->timestamp); + iio_push_to_buffers_with_ts(indio_dev, &data->scan, sizeof(data->scan), + pf->timestamp); err: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c b/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c index fbf9f8513055..1deaf70e92ce 100644 --- a/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c +++ b/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c @@ -238,8 +238,9 @@ static irqreturn_t lidar_trigger_handler(int irq, void *private) ret = lidar_get_measurement(data, &data->scan.chan); if (!ret) { - iio_push_to_buffers_with_timestamp(indio_dev, &data->scan, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &data->scan, + sizeof(data->scan), + iio_get_time_ns(indio_dev)); } else if (ret != -EINVAL) { dev_err(&data->client->dev, "cannot read LIDAR measurement"); } diff --git a/drivers/iio/proximity/srf08.c b/drivers/iio/proximity/srf08.c index 940fad6aeaa4..6e32fdfd161b 100644 --- a/drivers/iio/proximity/srf08.c +++ b/drivers/iio/proximity/srf08.c @@ -191,8 +191,8 @@ static irqreturn_t srf08_trigger_handler(int irq, void *p) mutex_lock(&data->lock); data->scan.chan = sensor_data; - iio_push_to_buffers_with_timestamp(indio_dev, - &data->scan, pf->timestamp); + iio_push_to_buffers_with_ts(indio_dev, &data->scan, sizeof(data->scan), + pf->timestamp); mutex_unlock(&data->lock); err: diff --git a/drivers/iio/proximity/sx_common.c b/drivers/iio/proximity/sx_common.c index f70198a1f0d1..59b35e40739b 100644 --- a/drivers/iio/proximity/sx_common.c +++ b/drivers/iio/proximity/sx_common.c @@ -379,8 +379,8 @@ static irqreturn_t sx_common_trigger_handler(int irq, void *private) data->buffer.channels[i++] = val; } - iio_push_to_buffers_with_timestamp(indio_dev, &data->buffer, - pf->timestamp); + iio_push_to_buffers_with_ts(indio_dev, &data->buffer, + sizeof(data->buffer), pf->timestamp); out: mutex_unlock(&data->mutex); diff --git a/drivers/iio/proximity/vl53l0x-i2c.c b/drivers/iio/proximity/vl53l0x-i2c.c index 87d10faaff9b..ef4aa7b2835e 100644 --- a/drivers/iio/proximity/vl53l0x-i2c.c +++ b/drivers/iio/proximity/vl53l0x-i2c.c @@ -94,8 +94,8 @@ static irqreturn_t vl53l0x_trigger_handler(int irq, void *priv) return -EREMOTEIO; data->scan.chan = get_unaligned_be16(&buffer[10]); - iio_push_to_buffers_with_timestamp(indio_dev, &data->scan, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &data->scan, sizeof(data->scan), + iio_get_time_ns(indio_dev)); iio_trigger_notify_done(indio_dev->trig); vl53l0x_clear_irq(data); -- cgit v1.2.3 From 886a446b76afddfad307488e95e87f23a08ffd51 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 13 Apr 2025 11:34:41 +0100 Subject: iio: pressure: zpa2326: Use aligned_s64 for the timestamp On x86_32 s64 fields are only 32-bit aligned. Hence force the alignment of the field and padding in the structure by using aligned_s64 instead. Reviewed-by: David Lechner Link: https://patch.msgid.link/20250413103443.2420727-19-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/pressure/zpa2326.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/pressure/zpa2326.c b/drivers/iio/pressure/zpa2326.c index 0a510d5fc1d4..30f007794f5b 100644 --- a/drivers/iio/pressure/zpa2326.c +++ b/drivers/iio/pressure/zpa2326.c @@ -582,7 +582,7 @@ static int zpa2326_fill_sample_buffer(struct iio_dev *indio_dev, struct { u32 pressure; u16 temperature; - u64 timestamp; + aligned_s64 timestamp; } sample; int err; -- cgit v1.2.3 From 77e8a16a7d820af111679952ded15a795471abdd Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 13 Apr 2025 11:34:42 +0100 Subject: iio: pressure: Use iio_push_to_buffers_with_ts() to provide length for runtime checks. This new function allows us to perform debug checks in the helper to ensure that the overrun does not occur. Use it in all the simple cases where either a static buffer or a structure is used in the drivers. Reviewed-by: Matti Vaittinen # ROHM BM1390 Reviewed-by: David Lechner Link: https://patch.msgid.link/20250413103443.2420727-20-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/pressure/bmp280-core.c | 25 +++++++++++++++---------- drivers/iio/pressure/hid-sensor-press.c | 5 +++-- drivers/iio/pressure/hsc030pa.c | 4 ++-- drivers/iio/pressure/mpl3115.c | 4 ++-- drivers/iio/pressure/rohm-bm1390.c | 3 ++- drivers/iio/pressure/zpa2326.c | 4 ++-- 6 files changed, 26 insertions(+), 19 deletions(-) diff --git a/drivers/iio/pressure/bmp280-core.c b/drivers/iio/pressure/bmp280-core.c index d44ab65c94cb..c20cc4a98c9c 100644 --- a/drivers/iio/pressure/bmp280-core.c +++ b/drivers/iio/pressure/bmp280-core.c @@ -1142,8 +1142,9 @@ static irqreturn_t bmp280_trigger_handler(int irq, void *p) chans[0] = comp_press; chans[1] = comp_temp; - iio_push_to_buffers_with_timestamp(indio_dev, data->sensor_data, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, data->sensor_data, + sizeof(data->sensor_data), + iio_get_time_ns(indio_dev)); out: iio_trigger_notify_done(indio_dev->trig); @@ -1273,8 +1274,9 @@ static irqreturn_t bme280_trigger_handler(int irq, void *p) chans[1] = comp_temp; chans[2] = comp_humidity; - iio_push_to_buffers_with_timestamp(indio_dev, data->sensor_data, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, data->sensor_data, + sizeof(data->sensor_data), + iio_get_time_ns(indio_dev)); out: iio_trigger_notify_done(indio_dev->trig); @@ -1936,8 +1938,9 @@ static irqreturn_t bmp380_trigger_handler(int irq, void *p) chans[0] = comp_press; chans[1] = comp_temp; - iio_push_to_buffers_with_timestamp(indio_dev, data->sensor_data, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, data->sensor_data, + sizeof(data->sensor_data), + iio_get_time_ns(indio_dev)); out: iio_trigger_notify_done(indio_dev->trig); @@ -2630,8 +2633,9 @@ static irqreturn_t bmp580_trigger_handler(int irq, void *p) /* Temperature calculations */ memcpy(&data->sensor_data[offset], &data->buf[0], 3); - iio_push_to_buffers_with_timestamp(indio_dev, data->sensor_data, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, data->sensor_data, + sizeof(data->sensor_data), + iio_get_time_ns(indio_dev)); out: iio_trigger_notify_done(indio_dev->trig); @@ -2969,8 +2973,9 @@ static irqreturn_t bmp180_trigger_handler(int irq, void *p) chans[0] = comp_press; chans[1] = comp_temp; - iio_push_to_buffers_with_timestamp(indio_dev, data->sensor_data, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, data->sensor_data, + sizeof(data->sensor_data), + iio_get_time_ns(indio_dev)); out: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/pressure/hid-sensor-press.c b/drivers/iio/pressure/hid-sensor-press.c index bffeddff5e91..5f1d6abda3e4 100644 --- a/drivers/iio/pressure/hid-sensor-press.c +++ b/drivers/iio/pressure/hid-sensor-press.c @@ -176,8 +176,9 @@ static int press_proc_event(struct hid_sensor_hub_device *hsdev, if (!press_state->timestamp) press_state->timestamp = iio_get_time_ns(indio_dev); - iio_push_to_buffers_with_timestamp( - indio_dev, &press_state->scan, press_state->timestamp); + iio_push_to_buffers_with_ts(indio_dev, &press_state->scan, + sizeof(press_state->scan), + press_state->timestamp); } return 0; diff --git a/drivers/iio/pressure/hsc030pa.c b/drivers/iio/pressure/hsc030pa.c index 168245818cfe..2d00c0656259 100644 --- a/drivers/iio/pressure/hsc030pa.c +++ b/drivers/iio/pressure/hsc030pa.c @@ -314,8 +314,8 @@ static irqreturn_t hsc_trigger_handler(int irq, void *private) memcpy(&data->scan.chan[0], &data->buffer[0], 2); memcpy(&data->scan.chan[1], &data->buffer[2], 2); - iio_push_to_buffers_with_timestamp(indio_dev, &data->scan, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &data->scan, sizeof(data->scan), + iio_get_time_ns(indio_dev)); error: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/pressure/mpl3115.c b/drivers/iio/pressure/mpl3115.c index 8397155555bd..d6715997f137 100644 --- a/drivers/iio/pressure/mpl3115.c +++ b/drivers/iio/pressure/mpl3115.c @@ -191,8 +191,8 @@ static irqreturn_t mpl3115_trigger_handler(int irq, void *p) } mutex_unlock(&data->lock); - iio_push_to_buffers_with_timestamp(indio_dev, buffer, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, buffer, sizeof(buffer), + iio_get_time_ns(indio_dev)); done: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/pressure/rohm-bm1390.c b/drivers/iio/pressure/rohm-bm1390.c index c651ead080df..dac27fd359ad 100644 --- a/drivers/iio/pressure/rohm-bm1390.c +++ b/drivers/iio/pressure/rohm-bm1390.c @@ -652,7 +652,8 @@ static irqreturn_t bm1390_trigger_handler(int irq, void *p) } } - iio_push_to_buffers_with_timestamp(idev, &data->buf, data->timestamp); + iio_push_to_buffers_with_ts(idev, &data->buf, sizeof(data->buf), + data->timestamp); iio_trigger_notify_done(idev->trig); return IRQ_HANDLED; diff --git a/drivers/iio/pressure/zpa2326.c b/drivers/iio/pressure/zpa2326.c index 30f007794f5b..1640aa3717ed 100644 --- a/drivers/iio/pressure/zpa2326.c +++ b/drivers/iio/pressure/zpa2326.c @@ -618,8 +618,8 @@ static int zpa2326_fill_sample_buffer(struct iio_dev *indio_dev, */ zpa2326_dbg(indio_dev, "filling raw samples buffer"); - iio_push_to_buffers_with_timestamp(indio_dev, &sample, - private->timestamp); + iio_push_to_buffers_with_ts(indio_dev, &sample, sizeof(sample), + private->timestamp); return 0; } -- cgit v1.2.3 From f4cd499970cc9a0ade52132075d4faabf5ef77f5 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 13 Apr 2025 11:34:43 +0100 Subject: iio: magnetometer: Use iio_push_to_buffers_with_ts() to provide length for runtime checks. This new function allows us to perform debug checks in the helper to ensure that the overrun does not occur. Use it in all the simple cases where either a static buffer or a structure is used in the drivers. Reviewed-by: David Lechner Link: https://patch.msgid.link/20250413103443.2420727-21-jic23@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/magnetometer/af8133j.c | 3 ++- drivers/iio/magnetometer/ak8974.c | 4 ++-- drivers/iio/magnetometer/ak8975.c | 4 ++-- drivers/iio/magnetometer/als31300.c | 3 +-- drivers/iio/magnetometer/bmc150_magn.c | 4 ++-- drivers/iio/magnetometer/hmc5843.h | 2 +- drivers/iio/magnetometer/hmc5843_core.c | 4 ++-- drivers/iio/magnetometer/mag3110.c | 4 ++-- drivers/iio/magnetometer/rm3100-core.c | 4 ++-- drivers/iio/magnetometer/yamaha-yas530.c | 4 ++-- 10 files changed, 18 insertions(+), 18 deletions(-) diff --git a/drivers/iio/magnetometer/af8133j.c b/drivers/iio/magnetometer/af8133j.c index c1fc339e85b4..192ba2da94e2 100644 --- a/drivers/iio/magnetometer/af8133j.c +++ b/drivers/iio/magnetometer/af8133j.c @@ -370,7 +370,8 @@ static irqreturn_t af8133j_trigger_handler(int irq, void *p) if (ret) goto out_done; - iio_push_to_buffers_with_timestamp(indio_dev, &sample, timestamp); + iio_push_to_buffers_with_ts(indio_dev, &sample, sizeof(sample), + timestamp); out_done: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/magnetometer/ak8974.c b/drivers/iio/magnetometer/ak8974.c index 857c92b7069c..403876a37bd2 100644 --- a/drivers/iio/magnetometer/ak8974.c +++ b/drivers/iio/magnetometer/ak8974.c @@ -673,8 +673,8 @@ static void ak8974_fill_buffer(struct iio_dev *indio_dev) goto out_unlock; } - iio_push_to_buffers_with_timestamp(indio_dev, &ak8974->scan, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &ak8974->scan, sizeof(ak8974->scan), + iio_get_time_ns(indio_dev)); out_unlock: mutex_unlock(&ak8974->lock); diff --git a/drivers/iio/magnetometer/ak8975.c b/drivers/iio/magnetometer/ak8975.c index f8393576f463..a1e92b2abffd 100644 --- a/drivers/iio/magnetometer/ak8975.c +++ b/drivers/iio/magnetometer/ak8975.c @@ -882,8 +882,8 @@ static void ak8975_fill_buffer(struct iio_dev *indio_dev) data->scan.channels[1] = clamp_t(s16, le16_to_cpu(fval[1]), -def->range, def->range); data->scan.channels[2] = clamp_t(s16, le16_to_cpu(fval[2]), -def->range, def->range); - iio_push_to_buffers_with_timestamp(indio_dev, &data->scan, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &data->scan, sizeof(data->scan), + iio_get_time_ns(indio_dev)); return; diff --git a/drivers/iio/magnetometer/als31300.c b/drivers/iio/magnetometer/als31300.c index 85eb1428a849..f72af829715f 100644 --- a/drivers/iio/magnetometer/als31300.c +++ b/drivers/iio/magnetometer/als31300.c @@ -245,8 +245,7 @@ static irqreturn_t als31300_trigger_handler(int irq, void *p) scan.channels[0] = x; scan.channels[1] = y; scan.channels[2] = z; - iio_push_to_buffers_with_timestamp(indio_dev, &scan, - pf->timestamp); + iio_push_to_buffers_with_ts(indio_dev, &scan, sizeof(scan), pf->timestamp); trigger_out: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/magnetometer/bmc150_magn.c b/drivers/iio/magnetometer/bmc150_magn.c index 88bb673e40d8..f9c51ceae011 100644 --- a/drivers/iio/magnetometer/bmc150_magn.c +++ b/drivers/iio/magnetometer/bmc150_magn.c @@ -678,8 +678,8 @@ static irqreturn_t bmc150_magn_trigger_handler(int irq, void *p) if (ret < 0) goto err; - iio_push_to_buffers_with_timestamp(indio_dev, &data->scan, - pf->timestamp); + iio_push_to_buffers_with_ts(indio_dev, &data->scan, sizeof(data->scan), + pf->timestamp); err: mutex_unlock(&data->mutex); diff --git a/drivers/iio/magnetometer/hmc5843.h b/drivers/iio/magnetometer/hmc5843.h index ffd669b1ee7c..7a3faf7ffed4 100644 --- a/drivers/iio/magnetometer/hmc5843.h +++ b/drivers/iio/magnetometer/hmc5843.h @@ -34,7 +34,7 @@ enum hmc5843_ids { * @regmap: hardware access register maps * @variant: describe chip variants * @scan: buffer to pack data for passing to - * iio_push_to_buffers_with_timestamp() + * iio_push_to_buffers_with_ts() */ struct hmc5843_data { struct device *dev; diff --git a/drivers/iio/magnetometer/hmc5843_core.c b/drivers/iio/magnetometer/hmc5843_core.c index 2fc84310e2cc..fc16ebd314f7 100644 --- a/drivers/iio/magnetometer/hmc5843_core.c +++ b/drivers/iio/magnetometer/hmc5843_core.c @@ -452,8 +452,8 @@ static irqreturn_t hmc5843_trigger_handler(int irq, void *p) if (ret < 0) goto done; - iio_push_to_buffers_with_timestamp(indio_dev, &data->scan, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &data->scan, sizeof(data->scan), + iio_get_time_ns(indio_dev)); done: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/magnetometer/mag3110.c b/drivers/iio/magnetometer/mag3110.c index 92d4511ed372..ff09250a06e7 100644 --- a/drivers/iio/magnetometer/mag3110.c +++ b/drivers/iio/magnetometer/mag3110.c @@ -404,8 +404,8 @@ static irqreturn_t mag3110_trigger_handler(int irq, void *p) data->scan.temperature = ret; } - iio_push_to_buffers_with_timestamp(indio_dev, &data->scan, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &data->scan, sizeof(data->scan), + iio_get_time_ns(indio_dev)); done: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/magnetometer/rm3100-core.c b/drivers/iio/magnetometer/rm3100-core.c index e5162ee64e01..2b2884425746 100644 --- a/drivers/iio/magnetometer/rm3100-core.c +++ b/drivers/iio/magnetometer/rm3100-core.c @@ -515,8 +515,8 @@ static irqreturn_t rm3100_trigger_handler(int irq, void *p) * Always using the same buffer so that we wouldn't need to set the * paddings to 0 in case of leaking any data. */ - iio_push_to_buffers_with_timestamp(indio_dev, data->buffer, - pf->timestamp); + iio_push_to_buffers_with_ts(indio_dev, data->buffer, sizeof(data->buffer), + pf->timestamp); done: iio_trigger_notify_done(indio_dev->trig); diff --git a/drivers/iio/magnetometer/yamaha-yas530.c b/drivers/iio/magnetometer/yamaha-yas530.c index 46bc64e676b1..340607111d9a 100644 --- a/drivers/iio/magnetometer/yamaha-yas530.c +++ b/drivers/iio/magnetometer/yamaha-yas530.c @@ -674,8 +674,8 @@ static void yas5xx_fill_buffer(struct iio_dev *indio_dev) yas5xx->scan.channels[1] = x; yas5xx->scan.channels[2] = y; yas5xx->scan.channels[3] = z; - iio_push_to_buffers_with_timestamp(indio_dev, &yas5xx->scan, - iio_get_time_ns(indio_dev)); + iio_push_to_buffers_with_ts(indio_dev, &yas5xx->scan, sizeof(yas5xx->scan), + iio_get_time_ns(indio_dev)); } static irqreturn_t yas5xx_handle_trigger(int irq, void *p) -- cgit v1.2.3 From c88ec0d8ad8fc2ca522fe40546906f25bad53484 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Thu, 17 Apr 2025 11:52:34 -0500 Subject: iio: adc: mt6360-adc: use aligned_s64 for timestamp MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Follow the pattern of other drivers and use aligned_s64 for the timestamp. This will ensure that the timestamp is correctly aligned on all architectures. It also ensures that the struct itself it also 8-byte aligned so we can drop the explicit __aligned(8) attribute. Signed-off-by: David Lechner Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250417-iio-more-timestamp-alignment-v1-2-eafac1e22318@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/mt6360-adc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/iio/adc/mt6360-adc.c b/drivers/iio/adc/mt6360-adc.c index 4eb2455d6ffa..f8e98b6fa7e9 100644 --- a/drivers/iio/adc/mt6360-adc.c +++ b/drivers/iio/adc/mt6360-adc.c @@ -263,8 +263,8 @@ static irqreturn_t mt6360_adc_trigger_handler(int irq, void *p) struct mt6360_adc_data *mad = iio_priv(indio_dev); struct { u16 values[MT6360_CHAN_MAX]; - int64_t timestamp; - } data __aligned(8); + aligned_s64 timestamp; + } data; int i = 0, bit, val, ret; memset(&data, 0, sizeof(data)); -- cgit v1.2.3 From 8f2d5147dd580f410c060dd710114a20979d7c69 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Thu, 17 Apr 2025 11:52:35 -0500 Subject: iio: addac: ad74413r: use aligned_s64 for timestamp MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Follow the pattern of other drivers and use aligned_s64 for the timestamp. Technically there was no issue here since AD74413R_FRAME_SIZE * AD74413R_CHANNEL_MAX == 16 and IIO_DMA_MINALIGN is always a multiple of 8. But best to conform in case someone copies this to new code and then tweaks something. Also move the unaligned.h header while touching this since it was the only one not in alphabetical order. Signed-off-by: David Lechner Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250417-iio-more-timestamp-alignment-v1-3-eafac1e22318@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/addac/ad74413r.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/iio/addac/ad74413r.c b/drivers/iio/addac/ad74413r.c index f0929616ab89..a0bb1dbcb7ad 100644 --- a/drivers/iio/addac/ad74413r.c +++ b/drivers/iio/addac/ad74413r.c @@ -4,7 +4,6 @@ * Author: Cosmin Tanislav */ -#include #include #include #include @@ -24,6 +23,8 @@ #include #include #include +#include +#include #include @@ -84,7 +85,7 @@ struct ad74413r_state { */ struct { u8 rx_buf[AD74413R_FRAME_SIZE * AD74413R_CHANNEL_MAX]; - s64 timestamp; + aligned_s64 timestamp; } adc_samples_buf __aligned(IIO_DMA_MINALIGN); u8 adc_samples_tx_buf[AD74413R_FRAME_SIZE * AD74413R_CHANNEL_MAX]; -- cgit v1.2.3 From 85c9e6d592e1c171fd013965b2b1b07302db5884 Mon Sep 17 00:00:00 2001 From: Siddharth Menon Date: Wed, 16 Apr 2025 19:18:56 +0530 Subject: iio: frequency: ad9832: Use FIELD_PREP macro to set bit fields Use bitfield and bitmask macros to clearly specify AD9832 SPI command fields to make register write code more readable. Suggested-by: Marcelo Schmitt Reviewed-by: Marcelo Schmitt Signed-off-by: Siddharth Menon Link: https://patch.msgid.link/20250416140259.13431-1-simeddon@gmail.com Signed-off-by: Jonathan Cameron --- drivers/staging/iio/frequency/ad9832.c | 92 ++++++++++++++++++---------------- 1 file changed, 48 insertions(+), 44 deletions(-) diff --git a/drivers/staging/iio/frequency/ad9832.c b/drivers/staging/iio/frequency/ad9832.c index 738982e2713f..49388da5a684 100644 --- a/drivers/staging/iio/frequency/ad9832.c +++ b/drivers/staging/iio/frequency/ad9832.c @@ -7,6 +7,8 @@ #include +#include +#include #include #include #include @@ -16,6 +18,7 @@ #include #include #include +#include #include #include @@ -59,17 +62,17 @@ #define AD9832_CMD_SLEEPRESCLR 0xC #define AD9832_FREQ BIT(11) -#define AD9832_PHASE(x) (((x) & 3) << 9) +#define AD9832_PHASE_MASK GENMASK(10, 9) #define AD9832_SYNC BIT(13) #define AD9832_SELSRC BIT(12) #define AD9832_SLEEP BIT(13) #define AD9832_RESET BIT(12) #define AD9832_CLR BIT(11) -#define CMD_SHIFT 12 -#define ADD_SHIFT 8 #define AD9832_FREQ_BITS 32 #define AD9832_PHASE_BITS 12 -#define RES_MASK(bits) ((1 << (bits)) - 1) +#define AD9832_CMD_MSK GENMASK(15, 12) +#define AD9832_ADD_MSK GENMASK(11, 8) +#define AD9832_DAT_MSK GENMASK(7, 0) /** * struct ad9832_state - driver instance specific data @@ -127,6 +130,8 @@ static int ad9832_write_frequency(struct ad9832_state *st, { unsigned long clk_freq; unsigned long regval; + u8 regval_bytes[4]; + u16 freq_cmd; clk_freq = clk_get_rate(st->mclk); @@ -134,19 +139,15 @@ static int ad9832_write_frequency(struct ad9832_state *st, return -EINVAL; regval = ad9832_calc_freqreg(clk_freq, fout); + put_unaligned_be32(regval, regval_bytes); - st->freq_data[0] = cpu_to_be16((AD9832_CMD_FRE8BITSW << CMD_SHIFT) | - (addr << ADD_SHIFT) | - ((regval >> 24) & 0xFF)); - st->freq_data[1] = cpu_to_be16((AD9832_CMD_FRE16BITSW << CMD_SHIFT) | - ((addr - 1) << ADD_SHIFT) | - ((regval >> 16) & 0xFF)); - st->freq_data[2] = cpu_to_be16((AD9832_CMD_FRE8BITSW << CMD_SHIFT) | - ((addr - 2) << ADD_SHIFT) | - ((regval >> 8) & 0xFF)); - st->freq_data[3] = cpu_to_be16((AD9832_CMD_FRE16BITSW << CMD_SHIFT) | - ((addr - 3) << ADD_SHIFT) | - ((regval >> 0) & 0xFF)); + for (int i = 0; i < ARRAY_SIZE(regval_bytes); i++) { + freq_cmd = (i % 2 == 0) ? AD9832_CMD_FRE8BITSW : AD9832_CMD_FRE16BITSW; + + st->freq_data[i] = cpu_to_be16(FIELD_PREP(AD9832_CMD_MSK, freq_cmd) | + FIELD_PREP(AD9832_ADD_MSK, addr - i) | + FIELD_PREP(AD9832_DAT_MSK, regval_bytes[i])); + } return spi_sync(st->spi, &st->freq_msg); } @@ -154,15 +155,21 @@ static int ad9832_write_frequency(struct ad9832_state *st, static int ad9832_write_phase(struct ad9832_state *st, unsigned long addr, unsigned long phase) { + u8 phase_bytes[2]; + u16 phase_cmd; + if (phase >= BIT(AD9832_PHASE_BITS)) return -EINVAL; - st->phase_data[0] = cpu_to_be16((AD9832_CMD_PHA8BITSW << CMD_SHIFT) | - (addr << ADD_SHIFT) | - ((phase >> 8) & 0xFF)); - st->phase_data[1] = cpu_to_be16((AD9832_CMD_PHA16BITSW << CMD_SHIFT) | - ((addr - 1) << ADD_SHIFT) | - (phase & 0xFF)); + put_unaligned_be16(phase, phase_bytes); + + for (int i = 0; i < ARRAY_SIZE(phase_bytes); i++) { + phase_cmd = (i % 2 == 0) ? AD9832_CMD_PHA8BITSW : AD9832_CMD_PHA16BITSW; + + st->phase_data[i] = cpu_to_be16(FIELD_PREP(AD9832_CMD_MSK, phase_cmd) | + FIELD_PREP(AD9832_ADD_MSK, addr - i) | + FIELD_PREP(AD9832_DAT_MSK, phase_bytes[i])); + } return spi_sync(st->spi, &st->phase_msg); } @@ -193,25 +200,23 @@ static ssize_t ad9832_write(struct device *dev, struct device_attribute *attr, ret = ad9832_write_phase(st, this_attr->address, val); break; case AD9832_PINCTRL_EN: - if (val) - st->ctrl_ss &= ~AD9832_SELSRC; - else - st->ctrl_ss |= AD9832_SELSRC; - st->data = cpu_to_be16((AD9832_CMD_SYNCSELSRC << CMD_SHIFT) | - st->ctrl_ss); + st->ctrl_ss &= ~AD9832_SELSRC; + st->ctrl_ss |= FIELD_PREP(AD9832_SELSRC, val ? 0 : 1); + + st->data = cpu_to_be16(FIELD_PREP(AD9832_CMD_MSK, AD9832_CMD_SYNCSELSRC) | + st->ctrl_ss); ret = spi_sync(st->spi, &st->msg); break; case AD9832_FREQ_SYM: - if (val == 1) { - st->ctrl_fp |= AD9832_FREQ; - } else if (val == 0) { + if (val == 1 || val == 0) { st->ctrl_fp &= ~AD9832_FREQ; + st->ctrl_fp |= FIELD_PREP(AD9832_FREQ, val ? 1 : 0); } else { ret = -EINVAL; break; } - st->data = cpu_to_be16((AD9832_CMD_FPSELECT << CMD_SHIFT) | - st->ctrl_fp); + st->data = cpu_to_be16(FIELD_PREP(AD9832_CMD_MSK, AD9832_CMD_FPSELECT) | + st->ctrl_fp); ret = spi_sync(st->spi, &st->msg); break; case AD9832_PHASE_SYM: @@ -220,22 +225,21 @@ static ssize_t ad9832_write(struct device *dev, struct device_attribute *attr, break; } - st->ctrl_fp &= ~AD9832_PHASE(3); - st->ctrl_fp |= AD9832_PHASE(val); + st->ctrl_fp &= ~AD9832_PHASE_MASK; + st->ctrl_fp |= FIELD_PREP(AD9832_PHASE_MASK, val); - st->data = cpu_to_be16((AD9832_CMD_FPSELECT << CMD_SHIFT) | - st->ctrl_fp); + st->data = cpu_to_be16(FIELD_PREP(AD9832_CMD_MSK, AD9832_CMD_FPSELECT) | + st->ctrl_fp); ret = spi_sync(st->spi, &st->msg); break; case AD9832_OUTPUT_EN: if (val) - st->ctrl_src &= ~(AD9832_RESET | AD9832_SLEEP | - AD9832_CLR); + st->ctrl_src &= ~(AD9832_RESET | AD9832_SLEEP | AD9832_CLR); else - st->ctrl_src |= AD9832_RESET; + st->ctrl_src |= FIELD_PREP(AD9832_RESET, 1); - st->data = cpu_to_be16((AD9832_CMD_SLEEPRESCLR << CMD_SHIFT) | - st->ctrl_src); + st->data = cpu_to_be16(FIELD_PREP(AD9832_CMD_MSK, AD9832_CMD_SLEEPRESCLR) | + st->ctrl_src); ret = spi_sync(st->spi, &st->msg); break; default: @@ -367,8 +371,8 @@ static int ad9832_probe(struct spi_device *spi) spi_message_add_tail(&st->phase_xfer[1], &st->phase_msg); st->ctrl_src = AD9832_SLEEP | AD9832_RESET | AD9832_CLR; - st->data = cpu_to_be16((AD9832_CMD_SLEEPRESCLR << CMD_SHIFT) | - st->ctrl_src); + st->data = cpu_to_be16(FIELD_PREP(AD9832_CMD_MSK, AD9832_CMD_SLEEPRESCLR) | + st->ctrl_src); ret = spi_sync(st->spi, &st->msg); if (ret) { dev_err(&spi->dev, "device init failed\n"); -- cgit v1.2.3 From 3012a122b2253fc4ea6070eb69b0b4531d27b3d8 Mon Sep 17 00:00:00 2001 From: Gabriel Shahrouzi Date: Thu, 17 Apr 2025 13:33:33 -0400 Subject: iio: frequency: ad9832: Remove unused parameter from data documentation This is a leftover from the patch: commit 566564e80b0e ("staging: iio: ad9832: use clock framework for clock reference"). The AD9832 driver uses the Common Clock Framework (CCF) to obtain the master clock (MCLK) frequency rather than relying on a frequency value passed from platform data. Signed-off-by: Gabriel Shahrouzi Link: https://patch.msgid.link/20250417173333.607844-1-gshahrouzi@gmail.com Signed-off-by: Jonathan Cameron --- drivers/staging/iio/frequency/ad9832.h | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/staging/iio/frequency/ad9832.h b/drivers/staging/iio/frequency/ad9832.h index 98dfbd9289ab..d0d840edb8d2 100644 --- a/drivers/staging/iio/frequency/ad9832.h +++ b/drivers/staging/iio/frequency/ad9832.h @@ -13,7 +13,6 @@ /** * struct ad9832_platform_data - platform specific information - * @mclk: master clock in Hz * @freq0: power up freq0 tuning word in Hz * @freq1: power up freq1 tuning word in Hz * @phase0: power up phase0 value [0..4095] correlates with 0..2PI -- cgit v1.2.3 From 1851c0f29d8a75ceeb1de1ac1379196a1f2aabaf Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Wed, 16 Apr 2025 14:09:33 +0300 Subject: iio: dac: ad5592r: Delete stray unlock in ad5592r_write_raw() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This code was converted to use guard locks but one of the unlocks was accidentally overlooked. Delete it. Fixes: 135e101f4dd6 ("iio: dac: ad5592r: use lock guards") Signed-off-by: Dan Carpenter Reviewed-by: Andy Shevchenko Reviewed-by: Nuno Sá Reviewed-by: Bartosz Golaszewski Link: https://patch.msgid.link/Z_-P7bsD3KL5K25R@stanley.mountain Signed-off-by: Jonathan Cameron --- drivers/iio/dac/ad5592r-base.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/iio/dac/ad5592r-base.c b/drivers/iio/dac/ad5592r-base.c index 217a8a88818d..5f2cd51723f6 100644 --- a/drivers/iio/dac/ad5592r-base.c +++ b/drivers/iio/dac/ad5592r-base.c @@ -324,10 +324,8 @@ static int ad5592r_write_raw(struct iio_dev *iio_dev, ret = st->ops->reg_read(st, AD5592R_REG_CTRL, &st->cached_gp_ctrl); - if (ret < 0) { - mutex_unlock(&st->lock); + if (ret < 0) return ret; - } if (chan->output) { if (gain) -- cgit v1.2.3 From 5aec2b6e19de9c3d71ac599e01d20b5720fbeb68 Mon Sep 17 00:00:00 2001 From: Lothar Rubusch Date: Mon, 14 Apr 2025 18:42:35 +0000 Subject: iio: accel: adxl345: introduce adxl345_push_event function Move the fifo handling into a separate function. This is a preparation for a generic handling of the interrupt status register results. The function is supposed to handle particular sensor events, and later to forward them to the iio channel. This is needed to read out the interrupt status register. The function shall return occurring errors, if any, or 0 in case of handled events or read fifo content. Thus migrate fifo read-out and push fifo content to iio channels into this function to be built up with additional event handling. Signed-off-by: Lothar Rubusch Link: https://patch.msgid.link/20250414184245.100280-2-l.rubusch@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/accel/adxl345_core.c | 28 +++++++++++++++++++--------- 1 file changed, 19 insertions(+), 9 deletions(-) diff --git a/drivers/iio/accel/adxl345_core.c b/drivers/iio/accel/adxl345_core.c index d31c5a024487..782149171347 100644 --- a/drivers/iio/accel/adxl345_core.c +++ b/drivers/iio/accel/adxl345_core.c @@ -416,6 +416,23 @@ static int adxl345_fifo_push(struct iio_dev *indio_dev, return 0; } +static int adxl345_push_event(struct iio_dev *indio_dev, int int_stat) +{ + struct adxl345_state *st = iio_priv(indio_dev); + int samples; + + if (FIELD_GET(ADXL345_INT_WATERMARK, int_stat)) { + samples = adxl345_get_samples(st); + if (samples < 0) + return -EINVAL; + + if (adxl345_fifo_push(indio_dev, samples) < 0) + return -EINVAL; + } + + return 0; +} + /** * adxl345_irq_handler() - Handle irqs of the ADXL345. * @irq: The irq being handled. @@ -428,19 +445,12 @@ static irqreturn_t adxl345_irq_handler(int irq, void *p) struct iio_dev *indio_dev = p; struct adxl345_state *st = iio_priv(indio_dev); int int_stat; - int samples; if (regmap_read(st->regmap, ADXL345_REG_INT_SOURCE, &int_stat)) return IRQ_NONE; - if (FIELD_GET(ADXL345_INT_WATERMARK, int_stat)) { - samples = adxl345_get_samples(st); - if (samples < 0) - goto err; - - if (adxl345_fifo_push(indio_dev, samples) < 0) - goto err; - } + if (adxl345_push_event(indio_dev, int_stat)) + goto err; if (FIELD_GET(ADXL345_INT_OVERRUN, int_stat)) goto err; -- cgit v1.2.3 From 7478933f036123ff1b374b2dcdcb2ca749cdbf6a Mon Sep 17 00:00:00 2001 From: Lothar Rubusch Date: Mon, 14 Apr 2025 18:42:36 +0000 Subject: iio: accel: adxl345: add single tap feature Add the single tap feature with a threshold in 62.5mg/LSB points and a scaled duration in us. Keep singletap threshold in regmap cache but the scaled value of duration in us as member variable. Both use IIO channels for individual enable of the x/y/z axis. Initializes threshold and duration with reasonable content. When an interrupt is caught it will be pushed to the according IIO channel. Signed-off-by: Lothar Rubusch Link: https://patch.msgid.link/20250414184245.100280-3-l.rubusch@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/accel/adxl345_core.c | 372 ++++++++++++++++++++++++++++++++++++++- 1 file changed, 369 insertions(+), 3 deletions(-) diff --git a/drivers/iio/accel/adxl345_core.c b/drivers/iio/accel/adxl345_core.c index 782149171347..2cda607f2a29 100644 --- a/drivers/iio/accel/adxl345_core.c +++ b/drivers/iio/accel/adxl345_core.c @@ -8,6 +8,7 @@ */ #include +#include #include #include #include @@ -17,6 +18,7 @@ #include #include #include +#include #include #include "adxl345.h" @@ -31,6 +33,29 @@ #define ADXL345_INT1 0 #define ADXL345_INT2 1 +#define ADXL345_REG_TAP_AXIS_MSK GENMASK(2, 0) + +#define ADXL345_TAP_Z_EN BIT(0) +#define ADXL345_TAP_Y_EN BIT(1) +#define ADXL345_TAP_X_EN BIT(2) + +/* single/double tap */ +enum adxl345_tap_type { + ADXL345_SINGLE_TAP, +}; + +static const unsigned int adxl345_tap_int_reg[] = { + [ADXL345_SINGLE_TAP] = ADXL345_INT_SINGLE_TAP, +}; + +enum adxl345_tap_time_type { + ADXL345_TAP_TIME_DUR, +}; + +static const unsigned int adxl345_tap_time_reg[] = { + [ADXL345_TAP_TIME_DUR] = ADXL345_REG_DUR, +}; + struct adxl345_state { const struct adxl345_chip_info *info; struct regmap *regmap; @@ -38,9 +63,23 @@ struct adxl345_state { int irq; u8 watermark; u8 fifo_mode; + + u32 tap_duration_us; + __le16 fifo_buf[ADXL345_DIRS * ADXL345_FIFO_SIZE + 1] __aligned(IIO_DMA_MINALIGN); }; +static struct iio_event_spec adxl345_events[] = { + { + /* single tap */ + .type = IIO_EV_TYPE_GESTURE, + .dir = IIO_EV_DIR_SINGLETAP, + .mask_separate = BIT(IIO_EV_INFO_ENABLE), + .mask_shared_by_type = BIT(IIO_EV_INFO_VALUE) | + BIT(IIO_EV_INFO_TIMEOUT), + }, +}; + #define ADXL345_CHANNEL(index, reg, axis) { \ .type = IIO_ACCEL, \ .modified = 1, \ @@ -57,6 +96,8 @@ struct adxl345_state { .storagebits = 16, \ .endianness = IIO_LE, \ }, \ + .event_spec = adxl345_events, \ + .num_event_specs = ARRAY_SIZE(adxl345_events), \ } enum adxl345_chans { @@ -113,6 +154,157 @@ static int adxl345_set_measure_en(struct adxl345_state *st, bool en) return regmap_write(st->regmap, ADXL345_REG_POWER_CTL, val); } +/* tap */ + +static int _adxl345_set_tap_int(struct adxl345_state *st, + enum adxl345_tap_type type, bool state) +{ + unsigned int int_map = 0x00; + unsigned int tap_threshold; + bool axis_valid; + bool singletap_args_valid = false; + bool en = false; + u32 axis_ctrl; + int ret; + + ret = regmap_read(st->regmap, ADXL345_REG_TAP_AXIS, &axis_ctrl); + if (ret) + return ret; + + axis_valid = FIELD_GET(ADXL345_REG_TAP_AXIS_MSK, axis_ctrl) > 0; + + ret = regmap_read(st->regmap, ADXL345_REG_THRESH_TAP, &tap_threshold); + if (ret) + return ret; + + /* + * Note: A value of 0 for threshold and/or dur may result in undesirable + * behavior if single tap/double tap interrupts are enabled. + */ + singletap_args_valid = tap_threshold > 0 && st->tap_duration_us > 0; + + if (type == ADXL345_SINGLE_TAP) + en = axis_valid && singletap_args_valid; + + if (state && en) + int_map |= adxl345_tap_int_reg[type]; + + return regmap_update_bits(st->regmap, ADXL345_REG_INT_ENABLE, + adxl345_tap_int_reg[type], int_map); +} + +static int adxl345_is_tap_en(struct adxl345_state *st, + enum iio_modifier axis, + enum adxl345_tap_type type, bool *en) +{ + unsigned int regval; + u32 axis_ctrl; + int ret; + + ret = regmap_read(st->regmap, ADXL345_REG_TAP_AXIS, &axis_ctrl); + if (ret) + return ret; + + /* Verify if axis is enabled for the tap detection. */ + switch (axis) { + case IIO_MOD_X: + *en = FIELD_GET(ADXL345_TAP_X_EN, axis_ctrl); + break; + case IIO_MOD_Y: + *en = FIELD_GET(ADXL345_TAP_Y_EN, axis_ctrl); + break; + case IIO_MOD_Z: + *en = FIELD_GET(ADXL345_TAP_Z_EN, axis_ctrl); + break; + default: + *en = false; + return -EINVAL; + } + + if (*en) { + /* + * If axis allow for tap detection, verify if the interrupt is + * enabled for tap detection. + */ + ret = regmap_read(st->regmap, ADXL345_REG_INT_ENABLE, ®val); + if (ret) + return ret; + + *en = adxl345_tap_int_reg[type] & regval; + } + + return 0; +} + +static int adxl345_set_singletap_en(struct adxl345_state *st, + enum iio_modifier axis, bool en) +{ + int ret; + u32 axis_ctrl; + + switch (axis) { + case IIO_MOD_X: + axis_ctrl = ADXL345_TAP_X_EN; + break; + case IIO_MOD_Y: + axis_ctrl = ADXL345_TAP_Y_EN; + break; + case IIO_MOD_Z: + axis_ctrl = ADXL345_TAP_Z_EN; + break; + default: + return -EINVAL; + } + + if (en) + ret = regmap_set_bits(st->regmap, ADXL345_REG_TAP_AXIS, + axis_ctrl); + else + ret = regmap_clear_bits(st->regmap, ADXL345_REG_TAP_AXIS, + axis_ctrl); + if (ret) + return ret; + + return _adxl345_set_tap_int(st, ADXL345_SINGLE_TAP, en); +} + +static int _adxl345_set_tap_time(struct adxl345_state *st, + enum adxl345_tap_time_type type, u32 val_us) +{ + unsigned int regval; + + switch (type) { + case ADXL345_TAP_TIME_DUR: + st->tap_duration_us = val_us; + break; + } + + /* + * The scale factor is 1250us / LSB for tap_window_us and tap_latent_us. + * For tap_duration_us the scale factor is 625us / LSB. + */ + if (type == ADXL345_TAP_TIME_DUR) + regval = DIV_ROUND_CLOSEST(val_us, 625); + else + regval = DIV_ROUND_CLOSEST(val_us, 1250); + + return regmap_write(st->regmap, adxl345_tap_time_reg[type], regval); +} + +static int adxl345_set_tap_duration(struct adxl345_state *st, u32 val_int, + u32 val_fract_us) +{ + /* + * Max value is 255 * 625 us = 0.159375 seconds + * + * Note: the scaling is similar to the scaling in the ADXL380 + */ + if (val_int || val_fract_us > 159375) + return -EINVAL; + + return _adxl345_set_tap_time(st, ADXL345_TAP_TIME_DUR, val_fract_us); +} + static int adxl345_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long mask) @@ -198,6 +390,131 @@ static int adxl345_write_raw(struct iio_dev *indio_dev, return -EINVAL; } +static int adxl345_read_event_config(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir) +{ + struct adxl345_state *st = iio_priv(indio_dev); + bool int_en; + int ret; + + switch (type) { + case IIO_EV_TYPE_GESTURE: + switch (dir) { + case IIO_EV_DIR_SINGLETAP: + ret = adxl345_is_tap_en(st, chan->channel2, + ADXL345_SINGLE_TAP, &int_en); + if (ret) + return ret; + return int_en; + default: + return -EINVAL; + } + default: + return -EINVAL; + } +} + +static int adxl345_write_event_config(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir, + bool state) +{ + struct adxl345_state *st = iio_priv(indio_dev); + + switch (type) { + case IIO_EV_TYPE_GESTURE: + switch (dir) { + case IIO_EV_DIR_SINGLETAP: + return adxl345_set_singletap_en(st, chan->channel2, state); + default: + return -EINVAL; + } + default: + return -EINVAL; + } +} + +static int adxl345_read_event_value(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir, + enum iio_event_info info, + int *val, int *val2) +{ + struct adxl345_state *st = iio_priv(indio_dev); + unsigned int tap_threshold; + int ret; + + switch (type) { + case IIO_EV_TYPE_GESTURE: + switch (info) { + case IIO_EV_INFO_VALUE: + /* + * The scale factor would be 62.5mg/LSB (i.e. 0xFF = 16g) but + * not applied here. In context of this general purpose sensor, + * what imports is rather signal intensity than the absolute + * measured g value. + */ + ret = regmap_read(st->regmap, ADXL345_REG_THRESH_TAP, + &tap_threshold); + if (ret) + return ret; + *val = sign_extend32(tap_threshold, 7); + return IIO_VAL_INT; + case IIO_EV_INFO_TIMEOUT: + *val = st->tap_duration_us; + *val2 = 1000000; + return IIO_VAL_FRACTIONAL; + default: + return -EINVAL; + } + default: + return -EINVAL; + } +} + +static int adxl345_write_event_value(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir, + enum iio_event_info info, + int val, int val2) +{ + struct adxl345_state *st = iio_priv(indio_dev); + int ret; + + ret = adxl345_set_measure_en(st, false); + if (ret) + return ret; + + switch (type) { + case IIO_EV_TYPE_GESTURE: + switch (info) { + case IIO_EV_INFO_VALUE: + ret = regmap_write(st->regmap, ADXL345_REG_THRESH_TAP, + min(val, 0xFF)); + if (ret) + return ret; + break; + case IIO_EV_INFO_TIMEOUT: + ret = adxl345_set_tap_duration(st, val, val2); + if (ret) + return ret; + break; + default: + return -EINVAL; + } + break; + default: + return -EINVAL; + } + + return adxl345_set_measure_en(st, true); +} + static int adxl345_reg_access(struct iio_dev *indio_dev, unsigned int reg, unsigned int writeval, unsigned int *readval) { @@ -416,10 +733,23 @@ static int adxl345_fifo_push(struct iio_dev *indio_dev, return 0; } -static int adxl345_push_event(struct iio_dev *indio_dev, int int_stat) +static int adxl345_push_event(struct iio_dev *indio_dev, int int_stat, + enum iio_modifier tap_dir) { + s64 ts = iio_get_time_ns(indio_dev); struct adxl345_state *st = iio_priv(indio_dev); int samples; + int ret = -ENOENT; + + if (FIELD_GET(ADXL345_INT_SINGLE_TAP, int_stat)) { + ret = iio_push_event(indio_dev, + IIO_MOD_EVENT_CODE(IIO_ACCEL, 0, tap_dir, + IIO_EV_TYPE_GESTURE, + IIO_EV_DIR_SINGLETAP), + ts); + if (ret) + return ret; + } if (FIELD_GET(ADXL345_INT_WATERMARK, int_stat)) { samples = adxl345_get_samples(st); @@ -428,9 +758,11 @@ static int adxl345_push_event(struct iio_dev *indio_dev, int int_stat) if (adxl345_fifo_push(indio_dev, samples) < 0) return -EINVAL; + + ret = 0; } - return 0; + return ret; } /** @@ -444,12 +776,33 @@ static irqreturn_t adxl345_irq_handler(int irq, void *p) { struct iio_dev *indio_dev = p; struct adxl345_state *st = iio_priv(indio_dev); + unsigned int regval; + enum iio_modifier tap_dir = IIO_NO_MOD; + u32 axis_ctrl; int int_stat; + int ret; + + ret = regmap_read(st->regmap, ADXL345_REG_TAP_AXIS, &axis_ctrl); + if (ret) + return IRQ_NONE; + + if (FIELD_GET(ADXL345_REG_TAP_AXIS_MSK, axis_ctrl)) { + ret = regmap_read(st->regmap, ADXL345_REG_ACT_TAP_STATUS, ®val); + if (ret) + return IRQ_NONE; + + if (FIELD_GET(ADXL345_TAP_Z_EN, regval)) + tap_dir = IIO_MOD_Z; + else if (FIELD_GET(ADXL345_TAP_Y_EN, regval)) + tap_dir = IIO_MOD_Y; + else if (FIELD_GET(ADXL345_TAP_X_EN, regval)) + tap_dir = IIO_MOD_X; + } if (regmap_read(st->regmap, ADXL345_REG_INT_SOURCE, &int_stat)) return IRQ_NONE; - if (adxl345_push_event(indio_dev, int_stat)) + if (adxl345_push_event(indio_dev, int_stat, tap_dir)) goto err; if (FIELD_GET(ADXL345_INT_OVERRUN, int_stat)) @@ -468,6 +821,10 @@ static const struct iio_info adxl345_info = { .read_raw = adxl345_read_raw, .write_raw = adxl345_write_raw, .write_raw_get_fmt = adxl345_write_raw_get_fmt, + .read_event_config = adxl345_read_event_config, + .write_event_config = adxl345_write_event_config, + .read_event_value = adxl345_read_event_value, + .write_event_value = adxl345_write_event_value, .debugfs_reg_access = &adxl345_reg_access, .hwfifo_set_watermark = adxl345_set_watermark, }; @@ -501,6 +858,7 @@ int adxl345_core_probe(struct device *dev, struct regmap *regmap, ADXL345_DATA_FORMAT_JUSTIFY | ADXL345_DATA_FORMAT_FULL_RES | ADXL345_DATA_FORMAT_SELF_TEST); + unsigned int tap_threshold; int ret; indio_dev = devm_iio_device_alloc(dev, sizeof(*st)); @@ -514,6 +872,10 @@ int adxl345_core_probe(struct device *dev, struct regmap *regmap, return -ENODEV; st->fifo_delay = fifo_delay_default; + /* Init with reasonable values */ + tap_threshold = 48; /* 48 [0x30] -> ~3g */ + st->tap_duration_us = 16; /* 16 [0x10] -> .010 */ + indio_dev->name = st->info->name; indio_dev->info = &adxl345_info; indio_dev->modes = INDIO_DIRECT_MODE; @@ -586,6 +948,10 @@ int adxl345_core_probe(struct device *dev, struct regmap *regmap, if (ret) return ret; + ret = regmap_write(st->regmap, ADXL345_REG_THRESH_TAP, tap_threshold); + if (ret) + return ret; + /* FIFO_STREAM mode is going to be activated later */ ret = devm_iio_kfifo_buffer_setup(dev, indio_dev, &adxl345_buffer_ops); if (ret) -- cgit v1.2.3 From 5b307f5aaf080e10adb97e60d0af926f7ff0edb1 Mon Sep 17 00:00:00 2001 From: Lothar Rubusch Date: Mon, 14 Apr 2025 18:42:37 +0000 Subject: iio: accel: adxl345: add double tap feature Add the double tap feature of the sensor. The interrupt handler needs to catch and forward the event to the IIO channel. The single tap implementation now is extended to deal with double tap as well. Doubletap introduces window and latency times, both in us. Since both times are scaled, the 8-bit register value is stored in hardware, where the scaled value in [us] is stored as member variable. Signed-off-by: Lothar Rubusch Link: https://patch.msgid.link/20250414184245.100280-4-l.rubusch@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/accel/adxl345_core.c | 104 ++++++++++++++++++++++++++++++++++++++- 1 file changed, 103 insertions(+), 1 deletion(-) diff --git a/drivers/iio/accel/adxl345_core.c b/drivers/iio/accel/adxl345_core.c index 2cda607f2a29..fd935e2bacd6 100644 --- a/drivers/iio/accel/adxl345_core.c +++ b/drivers/iio/accel/adxl345_core.c @@ -42,17 +42,23 @@ /* single/double tap */ enum adxl345_tap_type { ADXL345_SINGLE_TAP, + ADXL345_DOUBLE_TAP, }; static const unsigned int adxl345_tap_int_reg[] = { [ADXL345_SINGLE_TAP] = ADXL345_INT_SINGLE_TAP, + [ADXL345_DOUBLE_TAP] = ADXL345_INT_DOUBLE_TAP, }; enum adxl345_tap_time_type { + ADXL345_TAP_TIME_LATENT, + ADXL345_TAP_TIME_WINDOW, ADXL345_TAP_TIME_DUR, }; static const unsigned int adxl345_tap_time_reg[] = { + [ADXL345_TAP_TIME_LATENT] = ADXL345_REG_LATENT, + [ADXL345_TAP_TIME_WINDOW] = ADXL345_REG_WINDOW, [ADXL345_TAP_TIME_DUR] = ADXL345_REG_DUR, }; @@ -65,6 +71,8 @@ struct adxl345_state { u8 fifo_mode; u32 tap_duration_us; + u32 tap_latent_us; + u32 tap_window_us; __le16 fifo_buf[ADXL345_DIRS * ADXL345_FIFO_SIZE + 1] __aligned(IIO_DMA_MINALIGN); }; @@ -78,6 +86,14 @@ static struct iio_event_spec adxl345_events[] = { .mask_shared_by_type = BIT(IIO_EV_INFO_VALUE) | BIT(IIO_EV_INFO_TIMEOUT), }, + { + /* double tap */ + .type = IIO_EV_TYPE_GESTURE, + .dir = IIO_EV_DIR_DOUBLETAP, + .mask_shared_by_type = BIT(IIO_EV_INFO_ENABLE) | + BIT(IIO_EV_INFO_RESET_TIMEOUT) | + BIT(IIO_EV_INFO_TAP2_MIN_DELAY), + }, }; #define ADXL345_CHANNEL(index, reg, axis) { \ @@ -163,6 +179,7 @@ static int _adxl345_set_tap_int(struct adxl345_state *st, unsigned int tap_threshold; bool axis_valid; bool singletap_args_valid = false; + bool doubletap_args_valid = false; bool en = false; u32 axis_ctrl; int ret; @@ -183,8 +200,16 @@ static int _adxl345_set_tap_int(struct adxl345_state *st, */ singletap_args_valid = tap_threshold > 0 && st->tap_duration_us > 0; - if (type == ADXL345_SINGLE_TAP) + if (type == ADXL345_SINGLE_TAP) { en = axis_valid && singletap_args_valid; + } else { + /* doubletap: Window must be equal or greater than latent! */ + doubletap_args_valid = st->tap_latent_us > 0 && + st->tap_window_us > 0 && + st->tap_window_us >= st->tap_latent_us; + + en = axis_valid && singletap_args_valid && doubletap_args_valid; + } if (state && en) int_map |= adxl345_tap_int_reg[type]; @@ -268,12 +293,23 @@ static int adxl345_set_singletap_en(struct adxl345_state *st, return _adxl345_set_tap_int(st, ADXL345_SINGLE_TAP, en); } +static int adxl345_set_doubletap_en(struct adxl345_state *st, bool en) +{ + return _adxl345_set_tap_int(st, ADXL345_DOUBLE_TAP, en); +} + static int _adxl345_set_tap_time(struct adxl345_state *st, enum adxl345_tap_time_type type, u32 val_us) { unsigned int regval; switch (type) { + case ADXL345_TAP_TIME_WINDOW: + st->tap_window_us = val_us; + break; + case ADXL345_TAP_TIME_LATENT: + st->tap_latent_us = val_us; + break; case ADXL345_TAP_TIME_DUR: st->tap_duration_us = val_us; break; @@ -305,6 +341,34 @@ static int adxl345_set_tap_duration(struct adxl345_state *st, u32 val_int, return _adxl345_set_tap_time(st, ADXL345_TAP_TIME_DUR, val_fract_us); } +static int adxl345_set_tap_window(struct adxl345_state *st, u32 val_int, + u32 val_fract_us) +{ + /* + * Max value is 255 * 1250 us = 0.318750 seconds + * + * Note: the scaling is similar to the scaling in the ADXL380 + */ + if (val_int || val_fract_us > 318750) + return -EINVAL; + + return _adxl345_set_tap_time(st, ADXL345_TAP_TIME_WINDOW, val_fract_us); +} + +static int adxl345_set_tap_latent(struct adxl345_state *st, u32 val_int, + u32 val_fract_us) +{ + /* + * Max value is 255 * 1250 us = 0.318750 seconds + * + * Note: the scaling is similar to the scaling in the ADXL380 + */ + if (val_int || val_fract_us > 318750) + return -EINVAL; + + return _adxl345_set_tap_time(st, ADXL345_TAP_TIME_LATENT, val_fract_us); +} + static int adxl345_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long mask) @@ -408,6 +472,12 @@ static int adxl345_read_event_config(struct iio_dev *indio_dev, if (ret) return ret; return int_en; + case IIO_EV_DIR_DOUBLETAP: + ret = adxl345_is_tap_en(st, chan->channel2, + ADXL345_DOUBLE_TAP, &int_en); + if (ret) + return ret; + return int_en; default: return -EINVAL; } @@ -429,6 +499,8 @@ static int adxl345_write_event_config(struct iio_dev *indio_dev, switch (dir) { case IIO_EV_DIR_SINGLETAP: return adxl345_set_singletap_en(st, chan->channel2, state); + case IIO_EV_DIR_DOUBLETAP: + return adxl345_set_doubletap_en(st, state); default: return -EINVAL; } @@ -468,6 +540,14 @@ static int adxl345_read_event_value(struct iio_dev *indio_dev, *val = st->tap_duration_us; *val2 = 1000000; return IIO_VAL_FRACTIONAL; + case IIO_EV_INFO_RESET_TIMEOUT: + *val = st->tap_window_us; + *val2 = 1000000; + return IIO_VAL_FRACTIONAL; + case IIO_EV_INFO_TAP2_MIN_DELAY: + *val = st->tap_latent_us; + *val2 = 1000000; + return IIO_VAL_FRACTIONAL; default: return -EINVAL; } @@ -504,6 +584,16 @@ static int adxl345_write_event_value(struct iio_dev *indio_dev, if (ret) return ret; break; + case IIO_EV_INFO_RESET_TIMEOUT: + ret = adxl345_set_tap_window(st, val, val2); + if (ret) + return ret; + break; + case IIO_EV_INFO_TAP2_MIN_DELAY: + ret = adxl345_set_tap_latent(st, val, val2); + if (ret) + return ret; + break; default: return -EINVAL; } @@ -751,6 +841,16 @@ static int adxl345_push_event(struct iio_dev *indio_dev, int int_stat, return ret; } + if (FIELD_GET(ADXL345_INT_DOUBLE_TAP, int_stat)) { + ret = iio_push_event(indio_dev, + IIO_MOD_EVENT_CODE(IIO_ACCEL, 0, tap_dir, + IIO_EV_TYPE_GESTURE, + IIO_EV_DIR_DOUBLETAP), + ts); + if (ret) + return ret; + } + if (FIELD_GET(ADXL345_INT_WATERMARK, int_stat)) { samples = adxl345_get_samples(st); if (samples < 0) @@ -875,6 +975,8 @@ int adxl345_core_probe(struct device *dev, struct regmap *regmap, /* Init with reasonable values */ tap_threshold = 48; /* 48 [0x30] -> ~3g */ st->tap_duration_us = 16; /* 16 [0x10] -> .010 */ + st->tap_window_us = 64; /* 64 [0x40] -> .080 */ + st->tap_latent_us = 16; /* 16 [0x10] -> .020 */ indio_dev->name = st->info->name; indio_dev->info = &adxl345_info; -- cgit v1.2.3 From 0c2cdd1af6cc12d68932a837472e94fc1f2776d5 Mon Sep 17 00:00:00 2001 From: Lothar Rubusch Date: Mon, 14 Apr 2025 18:42:38 +0000 Subject: iio: accel: adxl345: set the tap suppress bit permanently Set the suppress bit feature to the double tap detection, whenever double tap is enabled. This impedes the suppress bit dangling in any state, and thus varying in sensitivity for double tap detection. Any tap event is defined by a rising signal edge above threshold, i.e. duration time starts counting; and the falling edge under threshold within duration time, i.e. then the tap event is issued. This means duration is used individually for each tap event. For double tap detection after a single tap, a latency time needs to be specified. Usually tap events, i.e. spikes above and returning below threshold will be ignored within latency. After latency, the window time starts counting for a second tap detection which has to happen within a duration time. If the suppress bit is not set, spikes within latency time are ignored. Setting the suppress bit will invalidate the double tap function. The sensor will thus be able to save the window time for double tap detection, and follow a more strict definition of what signal qualifies for a double tap. In a summary having the suppress bit set, fewer signal spikes will be considered as double taps. This is an optional add on to double tap, thus a separate patch. Signed-off-by: Lothar Rubusch Link: https://patch.msgid.link/20250414184245.100280-5-l.rubusch@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/accel/adxl345_core.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/iio/accel/adxl345_core.c b/drivers/iio/accel/adxl345_core.c index fd935e2bacd6..2e5fdd479e8d 100644 --- a/drivers/iio/accel/adxl345_core.c +++ b/drivers/iio/accel/adxl345_core.c @@ -34,6 +34,8 @@ #define ADXL345_INT2 1 #define ADXL345_REG_TAP_AXIS_MSK GENMASK(2, 0) +#define ADXL345_REG_TAP_SUPPRESS_MSK BIT(3) +#define ADXL345_REG_TAP_SUPPRESS BIT(3) #define ADXL345_TAP_Z_EN BIT(0) #define ADXL345_TAP_Y_EN BIT(1) @@ -295,6 +297,18 @@ static int adxl345_set_singletap_en(struct adxl345_state *st, static int adxl345_set_doubletap_en(struct adxl345_state *st, bool en) { + int ret; + + /* + * Generally suppress detection of spikes during the latency period as + * double taps here, this is fully optional for double tap detection + */ + ret = regmap_update_bits(st->regmap, ADXL345_REG_TAP_AXIS, + ADXL345_REG_TAP_SUPPRESS_MSK, + en ? ADXL345_REG_TAP_SUPPRESS : 0x00); + if (ret) + return ret; + return _adxl345_set_tap_int(st, ADXL345_DOUBLE_TAP, en); } -- cgit v1.2.3 From 6b7c0e9ddaccaac85e88e374260006d97f4b13f9 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Fri, 18 Apr 2025 14:58:22 -0500 Subject: iio: adc: hx711: use struct with aligned_s64 timestamp Use a struct with aligned s64_timestamp instead of a padded array for the buffer used for iio_push_to_buffers_with_ts(). This makes it easier to see the correctness of the size and alignment of the buffer. Signed-off-by: David Lechner Link: https://patch.msgid.link/20250418-iio-prefer-aligned_s64-timestamp-v1-3-4c6080710516@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/hx711.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/drivers/iio/adc/hx711.c b/drivers/iio/adc/hx711.c index 8da0419ecfa3..7235fa9e13d5 100644 --- a/drivers/iio/adc/hx711.c +++ b/drivers/iio/adc/hx711.c @@ -87,7 +87,10 @@ struct hx711_data { * triggered buffer * 2x32-bit channel + 64-bit naturally aligned timestamp */ - u32 buffer[4] __aligned(8); + struct { + u32 channel[2]; + aligned_s64 timestamp; + } buffer; /* * delay after a rising edge on SCK until the data is ready DOUT * this is dependent on the hx711 where the datasheet tells a @@ -361,15 +364,15 @@ static irqreturn_t hx711_trigger(int irq, void *p) mutex_lock(&hx711_data->lock); - memset(hx711_data->buffer, 0, sizeof(hx711_data->buffer)); + memset(&hx711_data->buffer, 0, sizeof(hx711_data->buffer)); iio_for_each_active_channel(indio_dev, i) { - hx711_data->buffer[j] = hx711_reset_read(hx711_data, + hx711_data->buffer.channel[j] = hx711_reset_read(hx711_data, indio_dev->channels[i].channel); j++; } - iio_push_to_buffers_with_timestamp(indio_dev, hx711_data->buffer, + iio_push_to_buffers_with_timestamp(indio_dev, &hx711_data->buffer, pf->timestamp); mutex_unlock(&hx711_data->lock); -- cgit v1.2.3 From b31a74075cb4ca2bb202a2e17d133ef3c9ee891f Mon Sep 17 00:00:00 2001 From: David Lechner Date: Fri, 18 Apr 2025 15:08:53 -0500 Subject: iio: orientation: hid-sensor-rotation: remove unnecessary alignment Remove __aligned(16) in the scan data struct in the hid-sensor-rotation driver. There is nothing in the code that requires this alignment. Signed-off-by: David Lechner Reviewed-by: Andy Shevchenko Link: https://patch.msgid.link/20250418-iio-orientation-hid-sensor-rotation-remove-alignment-v1-1-6da68eae7ecf@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/orientation/hid-sensor-rotation.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/orientation/hid-sensor-rotation.c b/drivers/iio/orientation/hid-sensor-rotation.c index c4b18fd0fa76..e759f91a710a 100644 --- a/drivers/iio/orientation/hid-sensor-rotation.c +++ b/drivers/iio/orientation/hid-sensor-rotation.c @@ -19,7 +19,7 @@ struct dev_rot_state { struct hid_sensor_common common_attributes; struct hid_sensor_hub_attribute_info quaternion; struct { - s32 sampled_vals[4] __aligned(16); + s32 sampled_vals[4]; aligned_s64 timestamp; } scan; int scale_pre_decml; -- cgit v1.2.3 From 60638e2a2d4bc03798f00d5ab65ce9b83cb8b03b Mon Sep 17 00:00:00 2001 From: Gabriel Shahrouzi Date: Sat, 19 Apr 2025 21:30:09 -0400 Subject: staging: iio: ad5933: Correct settling cycles encoding per datasheet The AD5933 datasheet (Table 13) lists the maximum cycles to be 0x7FC (2044). Clamp the user input to the maximum effective value of 0x7FC cycles. Fixes: f94aa354d676 ("iio: impedance-analyzer: New driver for AD5933/4 Impedance Converter, Network Analyzer") Cc: stable@vger.kernel.org Signed-off-by: Gabriel Shahrouzi Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250420013009.847851-1-gshahrouzi@gmail.com Signed-off-by: Jonathan Cameron --- drivers/staging/iio/impedance-analyzer/ad5933.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/iio/impedance-analyzer/ad5933.c b/drivers/staging/iio/impedance-analyzer/ad5933.c index 6b3e2319e791..85a4223295cd 100644 --- a/drivers/staging/iio/impedance-analyzer/ad5933.c +++ b/drivers/staging/iio/impedance-analyzer/ad5933.c @@ -413,7 +413,7 @@ static ssize_t ad5933_store(struct device *dev, ret = ad5933_cmd(st, 0); break; case AD5933_OUT_SETTLING_CYCLES: - val = clamp(val, (u16)0, (u16)0x7FF); + val = clamp(val, (u16)0, (u16)0x7FC); st->settling_cycles = val; /* 2x, 4x handling, see datasheet */ -- cgit v1.2.3 From dadf2477e3d67bb8b53ca8b7c2ace720dc5c440f Mon Sep 17 00:00:00 2001 From: Olivier Moysan Date: Thu, 24 Apr 2025 17:16:03 +0200 Subject: iio: adc: stm32: add oversampling support Add oversampling support for STM32H7, STM32MP15 & STM32MP13. STM32F4 ADC has no oversampling feature. The current support of the oversampling feature aims at increasing the data SNR, without changing the data resolution. As the oversampling by itself increases data resolution, a right shift is applied to keep the initial resolution. Only the oversampling ratio corresponding to a power of two are supported here, to get a direct link between right shift and oversampling ratio. (2^n ratio <=> n right shift) The oversampling ratio is shared by all channels, whatever channel type. (e.g. single ended or differential). Oversampling can be configured using IIO ABI: - oversampling_ratio_available - oversampling_ratio Co-developed-by: Fabrice Gasnier Signed-off-by: Fabrice Gasnier Signed-off-by: Olivier Moysan Reviewed-by: David Lechner Reviewed-by: Andy Shevchenko Link: https://patch.msgid.link/20250424151604.626758-1-olivier.moysan@foss.st.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/stm32-adc-core.h | 17 +++++ drivers/iio/adc/stm32-adc.c | 150 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 167 insertions(+) diff --git a/drivers/iio/adc/stm32-adc-core.h b/drivers/iio/adc/stm32-adc-core.h index 73b2c2e91c08..db50a9f3b922 100644 --- a/drivers/iio/adc/stm32-adc-core.h +++ b/drivers/iio/adc/stm32-adc-core.h @@ -10,6 +10,9 @@ #ifndef __STM32_ADC_H #define __STM32_ADC_H +#include +#include + /* * STM32 - ADC global register map * ________________________________________________________ @@ -91,6 +94,7 @@ #define STM32H7_ADC_IER 0x04 #define STM32H7_ADC_CR 0x08 #define STM32H7_ADC_CFGR 0x0C +#define STM32H7_ADC_CFGR2 0x10 #define STM32H7_ADC_SMPR1 0x14 #define STM32H7_ADC_SMPR2 0x18 #define STM32H7_ADC_PCSEL 0x1C @@ -160,6 +164,13 @@ #define STM32H7_DMNGT_SHIFT 0 #define STM32H7_DMNGT_MASK GENMASK(1, 0) +/* STM32H7_ADC_CFGR2 bit fields */ +#define STM32H7_OVSR_MASK GENMASK(25, 16) /* Correspond to OSVR field in datasheet */ +#define STM32H7_OVSR(v) FIELD_PREP(STM32H7_OVSR_MASK, v) +#define STM32H7_OVSS_MASK GENMASK(8, 5) +#define STM32H7_OVSS(v) FIELD_PREP(STM32H7_OVSS_MASK, v) +#define STM32H7_ROVSE BIT(0) + enum stm32h7_adc_dmngt { STM32H7_DMNGT_DR_ONLY, /* Regular data in DR only */ STM32H7_DMNGT_DMA_ONESHOT, /* DMA one shot mode */ @@ -226,6 +237,12 @@ enum stm32h7_adc_dmngt { #define STM32MP13_RES_SHIFT 3 #define STM32MP13_RES_MASK GENMASK(4, 3) +/* STM32MP13_ADC_CFGR2 bit fields */ +#define STM32MP13_OVSR_MASK GENMASK(4, 2) +#define STM32MP13_OVSR(v) FIELD_PREP(STM32MP13_OVSR_MASK, v) +#define STM32MP13_OVSS_MASK GENMASK(8, 5) +#define STM32MP13_OVSS(v) FIELD_PREP(STM32MP13_OVSS_MASK, v) + /* STM32MP13_ADC_DIFSEL - bit fields */ #define STM32MP13_DIFSEL_MASK GENMASK(18, 0) diff --git a/drivers/iio/adc/stm32-adc.c b/drivers/iio/adc/stm32-adc.c index 5159908a2a61..e84babf43385 100644 --- a/drivers/iio/adc/stm32-adc.c +++ b/drivers/iio/adc/stm32-adc.c @@ -6,6 +6,7 @@ * Author: Fabrice Gasnier . */ +#include #include #include #include @@ -202,11 +203,13 @@ struct stm32_adc; * @has_boostmode: boost mode support flag * @has_linearcal: linear calibration support flag * @has_presel: channel preselection support flag + * @has_oversampling: oversampling support flag * @prepare: optional prepare routine (power-up, enable) * @start_conv: routine to start conversions * @stop_conv: routine to stop conversions * @unprepare: optional unprepare routine (disable, power-down) * @irq_clear: routine to clear irqs + * @set_ovs: routine to set oversampling configuration * @smp_cycles: programmable sampling time (ADC clock cycles) * @ts_int_ch: pointer to array of internal channels minimum sampling time in ns */ @@ -219,11 +222,13 @@ struct stm32_adc_cfg { bool has_boostmode; bool has_linearcal; bool has_presel; + bool has_oversampling; int (*prepare)(struct iio_dev *); void (*start_conv)(struct iio_dev *, bool dma); void (*stop_conv)(struct iio_dev *); void (*unprepare)(struct iio_dev *); void (*irq_clear)(struct iio_dev *indio_dev, u32 msk); + void (*set_ovs)(struct iio_dev *indio_dev, u32 ovs_idx); const unsigned int *smp_cycles; const unsigned int *ts_int_ch; }; @@ -255,6 +260,7 @@ struct stm32_adc_cfg { * @num_diff: number of differential channels * @int_ch: internal channel indexes array * @nsmps: number of channels with optional sample time + * @ovs_idx: current oversampling ratio index (in oversampling array) */ struct stm32_adc { struct stm32_adc_common *common; @@ -282,6 +288,7 @@ struct stm32_adc { u32 num_diff; int int_ch[STM32_ADC_INT_CH_NB]; int nsmps; + int ovs_idx; }; struct stm32_adc_diff_channel { @@ -293,12 +300,24 @@ struct stm32_adc_diff_channel { * struct stm32_adc_info - stm32 ADC, per instance config data * @max_channels: Number of channels * @resolutions: available resolutions + * @oversampling: available oversampling ratios * @num_res: number of available resolutions + * @num_ovs: number of available oversampling ratios */ struct stm32_adc_info { int max_channels; const unsigned int *resolutions; + const unsigned int *oversampling; const unsigned int num_res; + const unsigned int num_ovs; +}; + +static const unsigned int stm32h7_adc_oversampling_avail[] = { + 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, +}; + +static const unsigned int stm32mp13_adc_oversampling_avail[] = { + 1, 2, 4, 8, 16, 32, 64, 128, 256, }; static const unsigned int stm32f4_adc_resolutions[] = { @@ -322,14 +341,18 @@ static const unsigned int stm32h7_adc_resolutions[] = { static const struct stm32_adc_info stm32h7_adc_info = { .max_channels = STM32_ADC_CH_MAX, .resolutions = stm32h7_adc_resolutions, + .oversampling = stm32h7_adc_oversampling_avail, .num_res = ARRAY_SIZE(stm32h7_adc_resolutions), + .num_ovs = ARRAY_SIZE(stm32h7_adc_oversampling_avail), }; /* stm32mp13 can have up to 19 channels */ static const struct stm32_adc_info stm32mp13_adc_info = { .max_channels = 19, .resolutions = stm32f4_adc_resolutions, + .oversampling = stm32mp13_adc_oversampling_avail, .num_res = ARRAY_SIZE(stm32f4_adc_resolutions), + .num_ovs = ARRAY_SIZE(stm32mp13_adc_oversampling_avail), }; /* @@ -889,6 +912,56 @@ static void stm32mp13_adc_start_conv(struct iio_dev *indio_dev, bool dma) stm32_adc_set_bits(adc, STM32H7_ADC_CR, STM32H7_ADSTART); } +static void stm32h7_adc_set_ovs(struct iio_dev *indio_dev, u32 ovs_idx) +{ + struct stm32_adc *adc = iio_priv(indio_dev); + u32 ovsr_bits, bits, msk; + + msk = STM32H7_ROVSE | STM32H7_OVSR_MASK | STM32H7_OVSS_MASK; + stm32_adc_clr_bits(adc, STM32H7_ADC_CFGR2, msk); + + if (!ovs_idx) + return; + + /* + * Only the oversampling ratios corresponding to 2^ovs_idx are exposed in sysfs. + * Oversampling ratios [2,3,...,1024] are mapped on OVSR register values [1,2,...,1023]. + * OVSR = 2^ovs_idx - 1 + * These ratio increase the resolution by ovs_idx bits. Apply a right shift to keep initial + * resolution given by "assigned-resolution-bits" property. + * OVSS = ovs_idx + */ + ovsr_bits = GENMASK(ovs_idx - 1, 0); + bits = STM32H7_ROVSE | STM32H7_OVSS(ovs_idx) | STM32H7_OVSR(ovsr_bits); + + stm32_adc_set_bits(adc, STM32H7_ADC_CFGR2, bits & msk); +} + +static void stm32mp13_adc_set_ovs(struct iio_dev *indio_dev, u32 ovs_idx) +{ + struct stm32_adc *adc = iio_priv(indio_dev); + u32 bits, msk; + + msk = STM32H7_ROVSE | STM32MP13_OVSR_MASK | STM32MP13_OVSS_MASK; + stm32_adc_clr_bits(adc, STM32H7_ADC_CFGR2, msk); + + if (!ovs_idx) + return; + + /* + * The oversampling ratios [2,4,8,..,256] are mapped on OVSR register values [0,1,...,7]. + * OVSR = ovs_idx - 1 + * These ratio increase the resolution by ovs_idx bits. Apply a right shift to keep initial + * resolution given by "assigned-resolution-bits" property. + * OVSS = ovs_idx + */ + bits = STM32H7_ROVSE | STM32MP13_OVSS(ovs_idx); + if (ovs_idx - 1) + bits |= STM32MP13_OVSR(ovs_idx - 1); + + stm32_adc_set_bits(adc, STM32H7_ADC_CFGR2, bits & msk); +} + static int stm32h7_adc_exit_pwr_down(struct iio_dev *indio_dev) { struct stm32_adc *adc = iio_priv(indio_dev); @@ -1461,6 +1534,67 @@ static int stm32_adc_single_conv(struct iio_dev *indio_dev, return ret; } +static int stm32_adc_write_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int val, int val2, long mask) +{ + struct stm32_adc *adc = iio_priv(indio_dev); + struct device *dev = indio_dev->dev.parent; + int nb = adc->cfg->adc_info->num_ovs; + unsigned int idx; + int ret; + + switch (mask) { + case IIO_CHAN_INFO_OVERSAMPLING_RATIO: + if (val2) + return -EINVAL; + + for (idx = 0; idx < nb; idx++) + if (adc->cfg->adc_info->oversampling[idx] == val) + break; + if (idx >= nb) + return -EINVAL; + + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; + + ret = pm_runtime_resume_and_get(dev); + if (ret < 0) + goto err; + + adc->cfg->set_ovs(indio_dev, idx); + + pm_runtime_mark_last_busy(dev); + pm_runtime_put_autosuspend(dev); + + adc->ovs_idx = idx; + +err: + iio_device_release_direct(indio_dev); + + return ret; + default: + return -EINVAL; + } +} + +static int stm32_adc_read_avail(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + const int **vals, int *type, int *length, long m) +{ + struct stm32_adc *adc = iio_priv(indio_dev); + + switch (m) { + case IIO_CHAN_INFO_OVERSAMPLING_RATIO: + *type = IIO_VAL_INT; + *length = adc->cfg->adc_info->num_ovs; + *vals = adc->cfg->adc_info->oversampling; + return IIO_AVAIL_LIST; + default: + return -EINVAL; + } +} + static int stm32_adc_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long mask) @@ -1502,6 +1636,10 @@ static int stm32_adc_read_raw(struct iio_dev *indio_dev, *val = 0; return IIO_VAL_INT; + case IIO_CHAN_INFO_OVERSAMPLING_RATIO: + *val = adc->cfg->adc_info->oversampling[adc->ovs_idx]; + return IIO_VAL_INT; + default: return -EINVAL; } @@ -1678,6 +1816,8 @@ static int stm32_adc_debugfs_reg_access(struct iio_dev *indio_dev, static const struct iio_info stm32_adc_iio_info = { .read_raw = stm32_adc_read_raw, + .write_raw = stm32_adc_write_raw, + .read_avail = stm32_adc_read_avail, .validate_trigger = stm32_adc_validate_trigger, .hwfifo_set_watermark = stm32_adc_set_watermark, .update_scan_mode = stm32_adc_update_scan_mode, @@ -1971,6 +2111,10 @@ static void stm32_adc_chan_init_one(struct iio_dev *indio_dev, chan->info_mask_separate = BIT(IIO_CHAN_INFO_RAW); chan->info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_OFFSET); + if (adc->cfg->has_oversampling) { + chan->info_mask_shared_by_all |= BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO); + chan->info_mask_shared_by_all_available = BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO); + } chan->scan_type.sign = 'u'; chan->scan_type.realbits = adc->cfg->adc_info->resolutions[adc->res]; chan->scan_type.storagebits = 16; @@ -2587,6 +2731,7 @@ static const struct stm32_adc_cfg stm32h7_adc_cfg = { .has_boostmode = true, .has_linearcal = true, .has_presel = true, + .has_oversampling = true, .start_conv = stm32h7_adc_start_conv, .stop_conv = stm32h7_adc_stop_conv, .prepare = stm32h7_adc_prepare, @@ -2594,6 +2739,7 @@ static const struct stm32_adc_cfg stm32h7_adc_cfg = { .smp_cycles = stm32h7_adc_smp_cycles, .irq_clear = stm32h7_adc_irq_clear, .ts_int_ch = stm32_adc_min_ts_h7, + .set_ovs = stm32h7_adc_set_ovs, }; static const unsigned int stm32_adc_min_ts_mp1[] = { 100, 100, 100, 4300, 9800 }; @@ -2607,6 +2753,7 @@ static const struct stm32_adc_cfg stm32mp1_adc_cfg = { .has_boostmode = true, .has_linearcal = true, .has_presel = true, + .has_oversampling = true, .start_conv = stm32h7_adc_start_conv, .stop_conv = stm32h7_adc_stop_conv, .prepare = stm32h7_adc_prepare, @@ -2614,6 +2761,7 @@ static const struct stm32_adc_cfg stm32mp1_adc_cfg = { .smp_cycles = stm32h7_adc_smp_cycles, .irq_clear = stm32h7_adc_irq_clear, .ts_int_ch = stm32_adc_min_ts_mp1, + .set_ovs = stm32h7_adc_set_ovs, }; static const unsigned int stm32_adc_min_ts_mp13[] = { 100, 0, 0, 4300, 9800 }; @@ -2623,6 +2771,7 @@ static const struct stm32_adc_cfg stm32mp13_adc_cfg = { .regs = &stm32mp13_adc_regspec, .adc_info = &stm32mp13_adc_info, .trigs = stm32h7_adc_trigs, + .has_oversampling = true, .start_conv = stm32mp13_adc_start_conv, .stop_conv = stm32h7_adc_stop_conv, .prepare = stm32h7_adc_prepare, @@ -2630,6 +2779,7 @@ static const struct stm32_adc_cfg stm32mp13_adc_cfg = { .smp_cycles = stm32mp13_adc_smp_cycles, .irq_clear = stm32h7_adc_irq_clear, .ts_int_ch = stm32_adc_min_ts_mp13, + .set_ovs = stm32mp13_adc_set_ovs, }; static const struct of_device_id stm32_adc_of_match[] = { -- cgit v1.2.3 From 52c43d80fa8370eb877fc63b1fc1eec67e1b1410 Mon Sep 17 00:00:00 2001 From: Marius Cristea Date: Thu, 24 Apr 2025 11:06:33 +0300 Subject: iio: adc: PAC1934: fix typo in documentation link Fix a typo,(PAC1934 -> PAC193X), into the link from an application note related to the ACPI device definition. Fixes: 0fb528c8255b ("iio: adc: adding support for PAC193x") Reported-by: Matteo Martelli Closes: https://patch.msgid.link/172794015844.2520.11909797050797595912@njaxe.localdomain Signed-off-by: Marius Cristea Reviewed-by: David Lechner Link: https://patch.msgid.link/20250424-pac1934-doc_link-v1-1-9832445cb270@microchip.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/pac1934.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/adc/pac1934.c b/drivers/iio/adc/pac1934.c index 20802b7f49ea..09fe88eb3fb0 100644 --- a/drivers/iio/adc/pac1934.c +++ b/drivers/iio/adc/pac1934.c @@ -1081,7 +1081,7 @@ static int pac1934_chip_identify(struct pac1934_chip_info *info) /* * documentation related to the ACPI device definition - * https://ww1.microchip.com/downloads/aemDocuments/documents/OTH/ApplicationNotes/ApplicationNotes/PAC1934-Integration-Notes-for-Microsoft-Windows-10-and-Windows-11-Driver-Support-DS00002534.pdf + * https://ww1.microchip.com/downloads/aemDocuments/documents/OTH/ApplicationNotes/ApplicationNotes/PAC193X-Integration-Notes-for-Microsoft-Windows-10-and-Windows-11-Driver-Support-DS00002534.pdf */ static int pac1934_acpi_parse_channel_config(struct i2c_client *client, struct pac1934_chip_info *info) -- cgit v1.2.3 From 50ed17cdfd7f32f1b0f87da0aaabcd5e8dd23f19 Mon Sep 17 00:00:00 2001 From: Beatriz Viana Costa Date: Wed, 23 Apr 2025 21:21:44 -0300 Subject: iio: light: zopt2201: Remove code duplication in scale write functions Consolidate duplicated logic from zopt2201_write_scale_als_by_idx() and zopt2201_write_scale_uvb_by_idx() into a new generic helper function zopt2201_write_scale_by_idx(). This function takes an additional parameter: a pointer to a zopt2201_scale array. To support this, the previously anonymous and duplicated struct used in the scale arrays was promoted to a named struct: zopt2201_scale. This change also corrects an incorrect array access that existed in zopt2201_write_scale_uvb_by_idx(). Signed-off-by: Beatriz Viana Costa Co-developed-by: Gabriela Victor Signed-off-by: Gabriela Victor Link: https://patch.msgid.link/20250424002144.23260-1-beatrizvianacosta16@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/light/zopt2201.c | 42 ++++++++++++------------------------------ 1 file changed, 12 insertions(+), 30 deletions(-) diff --git a/drivers/iio/light/zopt2201.c b/drivers/iio/light/zopt2201.c index 604be60e92ac..1e5e9bf2935f 100644 --- a/drivers/iio/light/zopt2201.c +++ b/drivers/iio/light/zopt2201.c @@ -113,11 +113,13 @@ static const struct { { 13, 3125 }, }; -static const struct { +struct zopt2201_scale { unsigned int scale, uscale; /* scale factor as integer + micro */ u8 gain; /* gain register value */ u8 res; /* resolution register value */ -} zopt2201_scale_als[] = { +}; + +static struct zopt2201_scale zopt2201_scale_als[] = { { 19, 200000, 0, 5 }, { 6, 400000, 1, 5 }, { 3, 200000, 2, 5 }, @@ -142,11 +144,7 @@ static const struct { { 0, 8333, 4, 0 }, }; -static const struct { - unsigned int scale, uscale; /* scale factor as integer + micro */ - u8 gain; /* gain register value */ - u8 res; /* resolution register value */ -} zopt2201_scale_uvb[] = { +static struct zopt2201_scale zopt2201_scale_uvb[] = { { 0, 460800, 0, 5 }, { 0, 153600, 1, 5 }, { 0, 76800, 2, 5 }, @@ -348,16 +346,17 @@ static int zopt2201_set_gain(struct zopt2201_data *data, u8 gain) return 0; } -static int zopt2201_write_scale_als_by_idx(struct zopt2201_data *data, int idx) +static int zopt2201_write_scale_by_idx(struct zopt2201_data *data, int idx, + struct zopt2201_scale *zopt2201_scale_array) { int ret; mutex_lock(&data->lock); - ret = zopt2201_set_resolution(data, zopt2201_scale_als[idx].res); + ret = zopt2201_set_resolution(data, zopt2201_scale_array[idx].res); if (ret < 0) goto unlock; - ret = zopt2201_set_gain(data, zopt2201_scale_als[idx].gain); + ret = zopt2201_set_gain(data, zopt2201_scale_array[idx].gain); unlock: mutex_unlock(&data->lock); @@ -371,29 +370,12 @@ static int zopt2201_write_scale_als(struct zopt2201_data *data, for (i = 0; i < ARRAY_SIZE(zopt2201_scale_als); i++) if (val == zopt2201_scale_als[i].scale && - val2 == zopt2201_scale_als[i].uscale) { - return zopt2201_write_scale_als_by_idx(data, i); - } + val2 == zopt2201_scale_als[i].uscale) + return zopt2201_write_scale_by_idx(data, i, zopt2201_scale_als); return -EINVAL; } -static int zopt2201_write_scale_uvb_by_idx(struct zopt2201_data *data, int idx) -{ - int ret; - - mutex_lock(&data->lock); - ret = zopt2201_set_resolution(data, zopt2201_scale_als[idx].res); - if (ret < 0) - goto unlock; - - ret = zopt2201_set_gain(data, zopt2201_scale_als[idx].gain); - -unlock: - mutex_unlock(&data->lock); - return ret; -} - static int zopt2201_write_scale_uvb(struct zopt2201_data *data, int val, int val2) { @@ -402,7 +384,7 @@ static int zopt2201_write_scale_uvb(struct zopt2201_data *data, for (i = 0; i < ARRAY_SIZE(zopt2201_scale_uvb); i++) if (val == zopt2201_scale_uvb[i].scale && val2 == zopt2201_scale_uvb[i].uscale) - return zopt2201_write_scale_uvb_by_idx(data, i); + return zopt2201_write_scale_by_idx(data, i, zopt2201_scale_uvb); return -EINVAL; } -- cgit v1.2.3 From e50cf7e2e6e0e1fe106384eab938faf712e6230f Mon Sep 17 00:00:00 2001 From: Gwendal Grignou Date: Wed, 23 Apr 2025 15:05:06 -0700 Subject: iio: cros_ec_sensors: Flush when changing the FIFO timeout |hwfifo_timeout| is used by the EC firmware only when new samples are available. When the timeout changes, espcially when the new timeout is shorter than the current one, send the samples waiting in the FIFO to the host. Inline the call to transmit |hwfifo_timeout| value to the firmware. Now flush when a sensor is suspended (ODR set to 0) as well. Signed-off-by: Gwendal Grignou Link: https://patch.msgid.link/20250423220506.2061021-1-gwendal@chromium.org Signed-off-by: Jonathan Cameron --- .../common/cros_ec_sensors/cros_ec_sensors_core.c | 48 ++++++++++++++-------- 1 file changed, 31 insertions(+), 17 deletions(-) diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c index 576d7b451767..700ebcd68ff4 100644 --- a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c +++ b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c @@ -91,22 +91,6 @@ static void get_default_min_max_freq(enum motionsensor_type type, } } -static int cros_ec_sensor_set_ec_rate(struct cros_ec_sensors_core_state *st, - int rate) -{ - int ret; - - if (rate > U16_MAX) - rate = U16_MAX; - - mutex_lock(&st->cmd_lock); - st->param.cmd = MOTIONSENSE_CMD_EC_RATE; - st->param.ec_rate.data = rate; - ret = cros_ec_motion_send_host_cmd(st, 0); - mutex_unlock(&st->cmd_lock); - return ret; -} - static ssize_t cros_ec_sensor_set_report_latency(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) @@ -122,7 +106,25 @@ static ssize_t cros_ec_sensor_set_report_latency(struct device *dev, /* EC rate is in ms. */ latency = integer * 1000 + fract / 1000; - ret = cros_ec_sensor_set_ec_rate(st, latency); + + mutex_lock(&st->cmd_lock); + st->param.cmd = MOTIONSENSE_CMD_EC_RATE; + st->param.ec_rate.data = min(U16_MAX, latency); + ret = cros_ec_motion_send_host_cmd(st, 0); + if (ret < 0) { + mutex_unlock(&st->cmd_lock); + return ret; + } + + /* + * Flush samples currently in the FIFO, especially when the new latency + * is shorter than the old one: new timeout value is only considered when + * there is a new sample available. It can take a while for a slow + * sensor. + */ + st->param.cmd = MOTIONSENSE_CMD_FIFO_FLUSH; + ret = cros_ec_motion_send_host_cmd(st, 0); + mutex_unlock(&st->cmd_lock); if (ret < 0) return ret; @@ -832,6 +834,18 @@ int cros_ec_sensors_core_write(struct cros_ec_sensors_core_state *st, st->param.sensor_odr.roundup = 1; ret = cros_ec_motion_send_host_cmd(st, 0); + if (ret) + break; + + /* Flush the FIFO when a sensor is stopped. + * If the FIFO has just been emptied, pending samples will be + * stuck until new samples are available. It will not happen + * when all the sensors are stopped. + */ + if (frequency == 0) { + st->param.cmd = MOTIONSENSE_CMD_FIFO_FLUSH; + ret = cros_ec_motion_send_host_cmd(st, 0); + } break; default: ret = -EINVAL; -- cgit v1.2.3 From 7ba4251181243ddd388be8d0c70564b5d9a8c3ca Mon Sep 17 00:00:00 2001 From: Gustavo Vaz Date: Wed, 23 Apr 2025 17:46:31 -0300 Subject: iio: accel: kxcjk-1013: Deduplicate setup interrupt functions The contents of kxcjk1013_setup_any_motion_interrupt and kxcj1013_setup_new_data_interrupt are very similar. Deduplicate these functions by introducing a generic function named kxcjk1013_setup_interrupt that has an additional flag indicating if it's a new data interrupt. Signed-off-by: Gustavo Vaz Co-developed-by: Francisco Henriques Signed-off-by: Francisco Henriques Link: https://patch.msgid.link/20250423204631.16460-1-gustavo.vaz@usp.br Signed-off-by: Jonathan Cameron --- drivers/iio/accel/kxcjk-1013.c | 87 +++++++++--------------------------------- 1 file changed, 17 insertions(+), 70 deletions(-) diff --git a/drivers/iio/accel/kxcjk-1013.c b/drivers/iio/accel/kxcjk-1013.c index 971b76c98606..910d7b5716e1 100644 --- a/drivers/iio/accel/kxcjk-1013.c +++ b/drivers/iio/accel/kxcjk-1013.c @@ -674,8 +674,8 @@ static int kxcjk1013_chip_update_thresholds(struct kxcjk1013_data *data) return 0; } -static int kxcjk1013_setup_any_motion_interrupt(struct kxcjk1013_data *data, - bool status) +static int kxcjk1013_setup_interrupt(struct kxcjk1013_data *data, + bool status, bool is_new_data) { const struct kx_chipset_regs *regs = data->info->regs; int ret; @@ -690,69 +690,12 @@ static int kxcjk1013_setup_any_motion_interrupt(struct kxcjk1013_data *data, if (ret < 0) return ret; - ret = kxcjk1013_chip_update_thresholds(data); - if (ret < 0) - return ret; - - ret = i2c_smbus_read_byte_data(data->client, regs->int_ctrl1); - if (ret < 0) { - dev_err(&data->client->dev, "Error reading reg_int_ctrl1\n"); - return ret; - } - - if (status) - ret |= KXCJK1013_REG_INT_CTRL1_BIT_IEN; - else - ret &= ~KXCJK1013_REG_INT_CTRL1_BIT_IEN; - - ret = i2c_smbus_write_byte_data(data->client, regs->int_ctrl1, ret); - if (ret < 0) { - dev_err(&data->client->dev, "Error writing reg_int_ctrl1\n"); - return ret; - } - - ret = i2c_smbus_read_byte_data(data->client, regs->ctrl1); - if (ret < 0) { - dev_err(&data->client->dev, "Error reading reg_ctrl1\n"); - return ret; - } - - if (status) - ret |= KXCJK1013_REG_CTRL1_BIT_WUFE; - else - ret &= ~KXCJK1013_REG_CTRL1_BIT_WUFE; - - ret = i2c_smbus_write_byte_data(data->client, regs->ctrl1, ret); - if (ret < 0) { - dev_err(&data->client->dev, "Error writing reg_ctrl1\n"); - return ret; - } - - if (store_mode == OPERATION) { - ret = kxcjk1013_set_mode(data, OPERATION); + if (is_new_data == true) { + ret = kxcjk1013_chip_update_thresholds(data); if (ret < 0) return ret; } - return 0; -} - -static int kxcjk1013_setup_new_data_interrupt(struct kxcjk1013_data *data, - bool status) -{ - const struct kx_chipset_regs *regs = data->info->regs; - int ret; - enum kxcjk1013_mode store_mode; - - ret = kxcjk1013_get_mode(data, &store_mode); - if (ret < 0) - return ret; - - /* This is requirement by spec to change state to STANDBY */ - ret = kxcjk1013_set_mode(data, STANDBY); - if (ret < 0) - return ret; - ret = i2c_smbus_read_byte_data(data->client, regs->int_ctrl1); if (ret < 0) { dev_err(&data->client->dev, "Error reading reg_int_ctrl1\n"); @@ -776,10 +719,17 @@ static int kxcjk1013_setup_new_data_interrupt(struct kxcjk1013_data *data, return ret; } - if (status) - ret |= KXCJK1013_REG_CTRL1_BIT_DRDY; - else - ret &= ~KXCJK1013_REG_CTRL1_BIT_DRDY; + if (is_new_data) { + if (status) + ret |= KXCJK1013_REG_CTRL1_BIT_DRDY; + else + ret &= ~KXCJK1013_REG_CTRL1_BIT_DRDY; + } else { + if (status) + ret |= KXCJK1013_REG_CTRL1_BIT_WUFE; + else + ret &= ~KXCJK1013_REG_CTRL1_BIT_WUFE; + } ret = i2c_smbus_write_byte_data(data->client, regs->ctrl1, ret); if (ret < 0) { @@ -1112,7 +1062,7 @@ static int kxcjk1013_write_event_config(struct iio_dev *indio_dev, return ret; } - ret = kxcjk1013_setup_any_motion_interrupt(data, state); + ret = kxcjk1013_setup_interrupt(data, state, false); if (ret < 0) { kxcjk1013_set_power_state(data, false); data->ev_enable_state = 0; @@ -1293,10 +1243,7 @@ static int kxcjk1013_data_rdy_trigger_set_state(struct iio_trigger *trig, mutex_unlock(&data->mutex); return ret; } - if (data->motion_trig == trig) - ret = kxcjk1013_setup_any_motion_interrupt(data, state); - else - ret = kxcjk1013_setup_new_data_interrupt(data, state); + ret = kxcjk1013_setup_interrupt(data, state, data->motion_trig != trig); if (ret < 0) { kxcjk1013_set_power_state(data, false); mutex_unlock(&data->mutex); -- cgit v1.2.3 From 028239a644b0da8637fc0c531bd4531d93824b02 Mon Sep 17 00:00:00 2001 From: Gyeyoung Baek Date: Thu, 24 Apr 2025 04:40:57 +0900 Subject: dt-bindings: Add Winsen to the vendor prefixes Add Winsen to the vendor prefixes. Signed-off-by: Gyeyoung Baek Acked-by: Krzysztof Kozlowski Link: https://patch.msgid.link/20250423194100.53934-2-gye976@gmail.com Signed-off-by: Jonathan Cameron --- Documentation/devicetree/bindings/vendor-prefixes.yaml | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml index 86f6a19b28ae..6d35549d2e4b 100644 --- a/Documentation/devicetree/bindings/vendor-prefixes.yaml +++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml @@ -1689,6 +1689,8 @@ patternProperties: description: Wingtech Technology Co., Ltd. "^winlink,.*": description: WinLink Co., Ltd + "^winsen,.*": + description: Winsen Corp. "^winstar,.*": description: Winstar Display Corp. "^wirelesstag,.*": -- cgit v1.2.3 From fd3730b2c7190454113a7fecc3be853c7628eb0f Mon Sep 17 00:00:00 2001 From: Gyeyoung Baek Date: Thu, 24 Apr 2025 04:40:58 +0900 Subject: dt-bindings: Add device tree support for Winsen MHZ19B CO2 sensor Add device tree support for Winsen MHZ19B sensor. Signed-off-by: Gyeyoung Baek Reviewed-by: Krzysztof Kozlowski Link: https://patch.msgid.link/20250423194100.53934-3-gye976@gmail.com Signed-off-by: Jonathan Cameron --- .../bindings/iio/chemical/winsen,mhz19b.yaml | 33 ++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/chemical/winsen,mhz19b.yaml diff --git a/Documentation/devicetree/bindings/iio/chemical/winsen,mhz19b.yaml b/Documentation/devicetree/bindings/iio/chemical/winsen,mhz19b.yaml new file mode 100644 index 000000000000..2a6ddb33f163 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/chemical/winsen,mhz19b.yaml @@ -0,0 +1,33 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/chemical/winsen,mhz19b.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: MHZ19B CO2 sensor + +maintainers: + - Gyeyoung Baek + +properties: + compatible: + const: winsen,mhz19b + + vin-supply: + description: Regulator that provides power to the sensor + +required: + - compatible + - vin-supply + +additionalProperties: false + +examples: + - | + serial { + co2-sensor { + compatible = "winsen,mhz19b"; + vin-supply = <&vdd>; + }; + }; +... -- cgit v1.2.3 From 4572a70b3681e38055c78d12fb68cd147bdbee7d Mon Sep 17 00:00:00 2001 From: Gyeyoung Baek Date: Thu, 24 Apr 2025 04:40:59 +0900 Subject: iio: chemical: Add support for Winsen MHZ19B CO2 sensor Add support for Winsen MHZ19B CO2 sensor. Datasheet: https://www.winsen-sensor.com/d/files/infrared-gas-sensor/mh-z19b-co2-ver1_0.pdf Signed-off-by: Gyeyoung Baek Reviewed-by: Andy Shevchenko Link: https://patch.msgid.link/20250423194100.53934-4-gye976@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/chemical/Kconfig | 10 ++ drivers/iio/chemical/Makefile | 1 + drivers/iio/chemical/mhz19b.c | 316 ++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 327 insertions(+) create mode 100644 drivers/iio/chemical/mhz19b.c diff --git a/drivers/iio/chemical/Kconfig b/drivers/iio/chemical/Kconfig index 330fe0af946f..7742de3f9cdb 100644 --- a/drivers/iio/chemical/Kconfig +++ b/drivers/iio/chemical/Kconfig @@ -108,6 +108,16 @@ config IAQCORE iAQ-Core Continuous/Pulsed VOC (Volatile Organic Compounds) sensors +config MHZ19B + tristate "Winsen MHZ19B CO2 sensor" + depends on SERIAL_DEV_BUS + help + Say Y here to build Serdev interface support for the Winsen + MHZ19B CO2 sensor. + + To compile this driver as a module, choose M here: the module will + be called mhz19b. + config PMS7003 tristate "Plantower PMS7003 particulate matter sensor" depends on SERIAL_DEV_BUS diff --git a/drivers/iio/chemical/Makefile b/drivers/iio/chemical/Makefile index 4866db06bdc9..c63daebf39ac 100644 --- a/drivers/iio/chemical/Makefile +++ b/drivers/iio/chemical/Makefile @@ -15,6 +15,7 @@ obj-$(CONFIG_ENS160) += ens160_core.o obj-$(CONFIG_ENS160_I2C) += ens160_i2c.o obj-$(CONFIG_ENS160_SPI) += ens160_spi.o obj-$(CONFIG_IAQCORE) += ams-iaq-core.o +obj-$(CONFIG_MHZ19B) += mhz19b.o obj-$(CONFIG_PMS7003) += pms7003.o obj-$(CONFIG_SCD30_CORE) += scd30_core.o obj-$(CONFIG_SCD30_I2C) += scd30_i2c.o diff --git a/drivers/iio/chemical/mhz19b.c b/drivers/iio/chemical/mhz19b.c new file mode 100644 index 000000000000..c0052ba3ac6c --- /dev/null +++ b/drivers/iio/chemical/mhz19b.c @@ -0,0 +1,316 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * mh-z19b CO₂ sensor driver + * + * Copyright (c) 2025 Gyeyoung Baek + * + * Datasheet: + * https://www.winsen-sensor.com/d/files/infrared-gas-sensor/mh-z19b-co2-ver1_0.pdf + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* + * Commands have following format: + * + * +------+------+-----+------+------+------+------+------+-------+ + * | 0xFF | 0x01 | cmd | arg0 | arg1 | 0x00 | 0x00 | 0x00 | cksum | + * +------+------+-----+------+------+------+------+------+-------+ + */ +#define MHZ19B_CMD_SIZE 9 + +/* ABC logic in MHZ19B means auto calibration. */ +#define MHZ19B_ABC_LOGIC_CMD 0x79 +#define MHZ19B_READ_CO2_CMD 0x86 +#define MHZ19B_SPAN_POINT_CMD 0x88 +#define MHZ19B_ZERO_POINT_CMD 0x87 + +#define MHZ19B_SPAN_POINT_PPM_MIN 1000 +#define MHZ19B_SPAN_POINT_PPM_MAX 5000 + +#define MHZ19B_SERDEV_TIMEOUT msecs_to_jiffies(100) + +struct mhz19b_state { + struct serdev_device *serdev; + + /* Must wait until the 'buf' is filled with 9 bytes.*/ + struct completion buf_ready; + + u8 buf_idx; + /* + * Serdev receive buffer. + * When data is received from the MH-Z19B, + * the 'mhz19b_receive_buf' callback function is called and fills this buffer. + */ + u8 buf[MHZ19B_CMD_SIZE] __aligned(IIO_DMA_MINALIGN); +}; + +static u8 mhz19b_get_checksum(u8 *cmd_buf) +{ + u8 i, checksum = 0; + +/* + * +------+------+-----+------+------+------+------+------+-------+ + * | 0xFF | 0x01 | cmd | arg0 | arg1 | 0x00 | 0x00 | 0x00 | cksum | + * +------+------+-----+------+------+------+------+------+-------+ + * i:1 2 3 4 5 6 7 + * + * Sum all cmd_buf elements from index 1 to 7. + */ + for (i = 1; i < 8; i++) + checksum += cmd_buf[i]; + + return -checksum; +} + +static int mhz19b_serdev_cmd(struct iio_dev *indio_dev, int cmd, u16 arg) +{ + struct mhz19b_state *st = iio_priv(indio_dev); + struct serdev_device *serdev = st->serdev; + struct device *dev = &indio_dev->dev; + int ret; + + /* + * cmd_buf[3,4] : arg0,1 + * cmd_buf[8] : checksum + */ + u8 cmd_buf[MHZ19B_CMD_SIZE] = { + 0xFF, 0x01, cmd, + }; + + switch (cmd) { + case MHZ19B_ABC_LOGIC_CMD: + cmd_buf[3] = arg ? 0xA0 : 0; + break; + case MHZ19B_SPAN_POINT_CMD: + put_unaligned_be16(arg, &cmd_buf[3]); + break; + default: + break; + } + cmd_buf[8] = mhz19b_get_checksum(cmd_buf); + + /* Write buf to uart ctrl synchronously */ + ret = serdev_device_write(serdev, cmd_buf, MHZ19B_CMD_SIZE, 0); + if (ret < 0) + return ret; + if (ret != MHZ19B_CMD_SIZE) + return -EIO; + + switch (cmd) { + case MHZ19B_READ_CO2_CMD: + ret = wait_for_completion_interruptible_timeout(&st->buf_ready, + MHZ19B_SERDEV_TIMEOUT); + if (ret < 0) + return ret; + if (!ret) + return -ETIMEDOUT; + + if (st->buf[8] != mhz19b_get_checksum(st->buf)) { + dev_err(dev, "checksum err"); + return -EINVAL; + } + + return get_unaligned_be16(&st->buf[2]); + default: + /* No response commands. */ + return 0; + } +} + +static int mhz19b_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int *val, int *val2, long mask) +{ + int ret; + + ret = mhz19b_serdev_cmd(indio_dev, MHZ19B_READ_CO2_CMD, 0); + if (ret < 0) + return ret; + + *val = ret; + return IIO_VAL_INT; +} + +/* + * echo 0 > calibration_auto_enable : ABC logic off + * echo 1 > calibration_auto_enable : ABC logic on + */ +static ssize_t calibration_auto_enable_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t len) +{ + struct iio_dev *indio_dev = dev_to_iio_dev(dev); + bool enable; + int ret; + + ret = kstrtobool(buf, &enable); + if (ret) + return ret; + + ret = mhz19b_serdev_cmd(indio_dev, MHZ19B_ABC_LOGIC_CMD, enable); + if (ret < 0) + return ret; + + return len; +} +static IIO_DEVICE_ATTR_WO(calibration_auto_enable, 0); + +/* + * echo 0 > calibration_forced_value : zero point calibration + * (make sure the sensor has been working under 400ppm for over 20 minutes.) + * echo [1000 1 5000] > calibration_forced_value : span point calibration + * (make sure the sensor has been working under a certain level CO₂ for over 20 minutes.) + */ +static ssize_t calibration_forced_value_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t len) +{ + struct iio_dev *indio_dev = dev_to_iio_dev(dev); + u16 ppm; + int cmd, ret; + + ret = kstrtou16(buf, 0, &ppm); + if (ret) + return ret; + + if (ppm) { + if (!in_range(ppm, MHZ19B_SPAN_POINT_PPM_MIN, + MHZ19B_SPAN_POINT_PPM_MAX - MHZ19B_SPAN_POINT_PPM_MIN + 1)) { + dev_dbg(&indio_dev->dev, + "span point ppm should be in a range [%d-%d]\n", + MHZ19B_SPAN_POINT_PPM_MIN, MHZ19B_SPAN_POINT_PPM_MAX); + return -EINVAL; + } + + cmd = MHZ19B_SPAN_POINT_CMD; + } else { + cmd = MHZ19B_ZERO_POINT_CMD; + } + + ret = mhz19b_serdev_cmd(indio_dev, cmd, ppm); + if (ret < 0) + return ret; + + return len; +} +static IIO_DEVICE_ATTR_WO(calibration_forced_value, 0); + +static struct attribute *mhz19b_attrs[] = { + &iio_dev_attr_calibration_auto_enable.dev_attr.attr, + &iio_dev_attr_calibration_forced_value.dev_attr.attr, + NULL +}; + +static const struct attribute_group mhz19b_attr_group = { + .attrs = mhz19b_attrs, +}; + +static const struct iio_info mhz19b_info = { + .attrs = &mhz19b_attr_group, + .read_raw = mhz19b_read_raw, +}; + +static const struct iio_chan_spec mhz19b_channels[] = { + { + .type = IIO_CONCENTRATION, + .channel2 = IIO_MOD_CO2, + .modified = 1, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), + }, +}; + +static size_t mhz19b_receive_buf(struct serdev_device *serdev, + const u8 *data, size_t len) +{ + struct iio_dev *indio_dev = dev_get_drvdata(&serdev->dev); + struct mhz19b_state *st = iio_priv(indio_dev); + + memcpy(st->buf + st->buf_idx, data, len); + st->buf_idx += len; + + if (st->buf_idx == MHZ19B_CMD_SIZE) { + st->buf_idx = 0; + complete(&st->buf_ready); + } + + return len; +} + +static const struct serdev_device_ops mhz19b_ops = { + .receive_buf = mhz19b_receive_buf, + .write_wakeup = serdev_device_write_wakeup, +}; + +static int mhz19b_probe(struct serdev_device *serdev) +{ + int ret; + struct device *dev = &serdev->dev; + struct iio_dev *indio_dev; + struct mhz19b_state *st; + + serdev_device_set_client_ops(serdev, &mhz19b_ops); + ret = devm_serdev_device_open(dev, serdev); + if (ret) + return ret; + serdev_device_set_baudrate(serdev, 9600); + serdev_device_set_flow_control(serdev, false); + ret = serdev_device_set_parity(serdev, SERDEV_PARITY_NONE); + if (ret) + return ret; + + indio_dev = devm_iio_device_alloc(dev, sizeof(*st)); + if (!indio_dev) + return ret; + serdev_device_set_drvdata(serdev, indio_dev); + + st = iio_priv(indio_dev); + st->serdev = serdev; + + init_completion(&st->buf_ready); + + ret = devm_regulator_get_enable(dev, "vin"); + if (ret) + return ret; + + indio_dev->name = "mh-z19b"; + indio_dev->channels = mhz19b_channels; + indio_dev->num_channels = ARRAY_SIZE(mhz19b_channels); + indio_dev->info = &mhz19b_info; + + return devm_iio_device_register(dev, indio_dev); +} + +static const struct of_device_id mhz19b_of_match[] = { + { .compatible = "winsen,mhz19b", }, + { } +}; +MODULE_DEVICE_TABLE(of, mhz19b_of_match); + +static struct serdev_device_driver mhz19b_driver = { + .driver = { + .name = "mhz19b", + .of_match_table = mhz19b_of_match, + }, + .probe = mhz19b_probe, +}; +module_serdev_device_driver(mhz19b_driver); + +MODULE_AUTHOR("Gyeyoung Baek"); +MODULE_DESCRIPTION("MH-Z19B CO2 sensor driver using serdev interface"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3 From 162129a27c693230fd15531d083b4574c9101a6b Mon Sep 17 00:00:00 2001 From: Gyeyoung Baek Date: Thu, 24 Apr 2025 04:41:00 +0900 Subject: MAINTAINERS: Add WINSEN MHZ19B Add undersigned as a maintainer for the WINSEN MHZ19B. Signed-off-by: Gyeyoung Baek Link: https://patch.msgid.link/20250423194100.53934-5-gye976@gmail.com Signed-off-by: Jonathan Cameron --- MAINTAINERS | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index 01079a189c93..4a0089db6670 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -26015,6 +26015,12 @@ M: David Härdeman S: Maintained F: drivers/media/rc/winbond-cir.c +WINSEN MHZ19B +M: Gyeyoung Baek +S: Maintained +F: Documentation/devicetree/bindings/iio/chemical/winsen,mhz19b.yaml +F: drivers/iio/chemical/mhz19b.c + WINSYSTEMS EBC-C384 WATCHDOG DRIVER L: linux-watchdog@vger.kernel.org S: Orphan -- cgit v1.2.3 From 872c8014e05ed47b8a7c0f5ba4311279a637150b Mon Sep 17 00:00:00 2001 From: David Lechner Date: Tue, 22 Apr 2025 14:28:36 -0500 Subject: iio: pressure: bmp280: drop sensor_data array Drop the sensor_data array from struct bmp280_data and replace it using local structs in each interrupt handler. The sensor_data array in struct bmp280_data is not used to share data between functions and isn't used for DMA, so there isn't really a need to have it in the struct. Instead, we can use the struct pattern for scan data in each interrupt handler. This has the advantage of allowing us to see the actual layout of each scan buffer for each different type of supported sensor. It also avoid juggling values between local variables and the array which makes the code a bit simpler by avoiding some extra assignments. We can also drop the BME280_NUM_MAX_CHANNELS macro as it is no longer used. Suggested-by: Jonathan Cameron Link: https://lore.kernel.org/linux-iio/20250421135540.1a667221@jic23-huawei/ Signed-off-by: David Lechner Reviewed-by: Andy Shevchenko Link: https://patch.msgid.link/20250422-iio-pressure-bmp280-rework-push-to-buffers-v1-1-ee722f29aeca@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/pressure/bmp280-core.c | 102 +++++++++++++++++++------------------ drivers/iio/pressure/bmp280.h | 8 --- 2 files changed, 52 insertions(+), 58 deletions(-) diff --git a/drivers/iio/pressure/bmp280-core.c b/drivers/iio/pressure/bmp280-core.c index c20cc4a98c9c..5728cc18cced 100644 --- a/drivers/iio/pressure/bmp280-core.c +++ b/drivers/iio/pressure/bmp280-core.c @@ -46,6 +46,7 @@ #include #include #include +#include #include #include @@ -1105,9 +1106,13 @@ static irqreturn_t bmp280_trigger_handler(int irq, void *p) struct iio_poll_func *pf = p; struct iio_dev *indio_dev = pf->indio_dev; struct bmp280_data *data = iio_priv(indio_dev); - u32 adc_temp, adc_press, comp_press; - s32 t_fine, comp_temp; - s32 *chans = (s32 *)data->sensor_data; + u32 adc_temp, adc_press; + s32 t_fine; + struct { + u32 comp_press; + s32 comp_temp; + aligned_s64 timestamp; + } buffer; int ret; guard(mutex)(&data->lock); @@ -1127,7 +1132,7 @@ static irqreturn_t bmp280_trigger_handler(int irq, void *p) goto out; } - comp_temp = bmp280_compensate_temp(data, adc_temp); + buffer.comp_temp = bmp280_compensate_temp(data, adc_temp); /* Pressure calculations */ adc_press = FIELD_GET(BMP280_MEAS_TRIM_MASK, get_unaligned_be24(&data->buf[0])); @@ -1137,13 +1142,9 @@ static irqreturn_t bmp280_trigger_handler(int irq, void *p) } t_fine = bmp280_calc_t_fine(data, adc_temp); - comp_press = bmp280_compensate_press(data, adc_press, t_fine); - - chans[0] = comp_press; - chans[1] = comp_temp; + buffer.comp_press = bmp280_compensate_press(data, adc_press, t_fine); - iio_push_to_buffers_with_ts(indio_dev, data->sensor_data, - sizeof(data->sensor_data), + iio_push_to_buffers_with_ts(indio_dev, &buffer, sizeof(buffer), iio_get_time_ns(indio_dev)); out: @@ -1226,9 +1227,14 @@ static irqreturn_t bme280_trigger_handler(int irq, void *p) struct iio_poll_func *pf = p; struct iio_dev *indio_dev = pf->indio_dev; struct bmp280_data *data = iio_priv(indio_dev); - u32 adc_temp, adc_press, adc_humidity, comp_press, comp_humidity; - s32 t_fine, comp_temp; - s32 *chans = (s32 *)data->sensor_data; + u32 adc_temp, adc_press, adc_humidity; + s32 t_fine; + struct { + u32 comp_press; + s32 comp_temp; + u32 comp_humidity; + aligned_s64 timestamp; + } buffer; int ret; guard(mutex)(&data->lock); @@ -1248,7 +1254,7 @@ static irqreturn_t bme280_trigger_handler(int irq, void *p) goto out; } - comp_temp = bmp280_compensate_temp(data, adc_temp); + buffer.comp_temp = bmp280_compensate_temp(data, adc_temp); /* Pressure calculations */ adc_press = FIELD_GET(BMP280_MEAS_TRIM_MASK, get_unaligned_be24(&data->buf[0])); @@ -1258,7 +1264,7 @@ static irqreturn_t bme280_trigger_handler(int irq, void *p) } t_fine = bmp280_calc_t_fine(data, adc_temp); - comp_press = bmp280_compensate_press(data, adc_press, t_fine); + buffer.comp_press = bmp280_compensate_press(data, adc_press, t_fine); /* Humidity calculations */ adc_humidity = get_unaligned_be16(&data->buf[6]); @@ -1268,14 +1274,10 @@ static irqreturn_t bme280_trigger_handler(int irq, void *p) goto out; } - comp_humidity = bme280_compensate_humidity(data, adc_humidity, t_fine); + buffer.comp_humidity = bme280_compensate_humidity(data, adc_humidity, + t_fine); - chans[0] = comp_press; - chans[1] = comp_temp; - chans[2] = comp_humidity; - - iio_push_to_buffers_with_ts(indio_dev, data->sensor_data, - sizeof(data->sensor_data), + iio_push_to_buffers_with_ts(indio_dev, &buffer, sizeof(buffer), iio_get_time_ns(indio_dev)); out: @@ -1901,9 +1903,13 @@ static irqreturn_t bmp380_trigger_handler(int irq, void *p) struct iio_poll_func *pf = p; struct iio_dev *indio_dev = pf->indio_dev; struct bmp280_data *data = iio_priv(indio_dev); - u32 adc_temp, adc_press, comp_press; - s32 t_fine, comp_temp; - s32 *chans = (s32 *)data->sensor_data; + u32 adc_temp, adc_press; + s32 t_fine; + struct { + u32 comp_press; + s32 comp_temp; + aligned_s64 timestamp; + } buffer; int ret; guard(mutex)(&data->lock); @@ -1923,7 +1929,7 @@ static irqreturn_t bmp380_trigger_handler(int irq, void *p) goto out; } - comp_temp = bmp380_compensate_temp(data, adc_temp); + buffer.comp_temp = bmp380_compensate_temp(data, adc_temp); /* Pressure calculations */ adc_press = get_unaligned_le24(&data->buf[0]); @@ -1933,13 +1939,9 @@ static irqreturn_t bmp380_trigger_handler(int irq, void *p) } t_fine = bmp380_calc_t_fine(data, adc_temp); - comp_press = bmp380_compensate_press(data, adc_press, t_fine); - - chans[0] = comp_press; - chans[1] = comp_temp; + buffer.comp_press = bmp380_compensate_press(data, adc_press, t_fine); - iio_push_to_buffers_with_ts(indio_dev, data->sensor_data, - sizeof(data->sensor_data), + iio_push_to_buffers_with_ts(indio_dev, &buffer, sizeof(buffer), iio_get_time_ns(indio_dev)); out: @@ -2611,7 +2613,12 @@ static irqreturn_t bmp580_trigger_handler(int irq, void *p) struct iio_poll_func *pf = p; struct iio_dev *indio_dev = pf->indio_dev; struct bmp280_data *data = iio_priv(indio_dev); - int ret, offset; + struct { + __le32 comp_temp; + __le32 comp_press; + aligned_s64 timestamp; + } buffer; + int ret; guard(mutex)(&data->lock); @@ -2623,18 +2630,13 @@ static irqreturn_t bmp580_trigger_handler(int irq, void *p) goto out; } - offset = 0; - /* Pressure calculations */ - memcpy(&data->sensor_data[offset], &data->buf[3], 3); - - offset += sizeof(s32); + memcpy(&buffer.comp_press, &data->buf[3], 3); /* Temperature calculations */ - memcpy(&data->sensor_data[offset], &data->buf[0], 3); + memcpy(&buffer.comp_temp, &data->buf[0], 3); - iio_push_to_buffers_with_ts(indio_dev, data->sensor_data, - sizeof(data->sensor_data), + iio_push_to_buffers_with_ts(indio_dev, &buffer, sizeof(buffer), iio_get_time_ns(indio_dev)); out: @@ -2956,25 +2958,25 @@ static irqreturn_t bmp180_trigger_handler(int irq, void *p) struct iio_poll_func *pf = p; struct iio_dev *indio_dev = pf->indio_dev; struct bmp280_data *data = iio_priv(indio_dev); - int ret, comp_temp, comp_press; - s32 *chans = (s32 *)data->sensor_data; + struct { + u32 comp_press; + s32 comp_temp; + aligned_s64 timestamp; + } buffer; + int ret; guard(mutex)(&data->lock); - ret = bmp180_read_temp(data, &comp_temp); + ret = bmp180_read_temp(data, &buffer.comp_temp); if (ret) goto out; - ret = bmp180_read_press(data, &comp_press); + ret = bmp180_read_press(data, &buffer.comp_press); if (ret) goto out; - chans[0] = comp_press; - chans[1] = comp_temp; - - iio_push_to_buffers_with_ts(indio_dev, data->sensor_data, - sizeof(data->sensor_data), + iio_push_to_buffers_with_ts(indio_dev, &buffer, sizeof(buffer), iio_get_time_ns(indio_dev)); out: diff --git a/drivers/iio/pressure/bmp280.h b/drivers/iio/pressure/bmp280.h index 5b2ee1d0ee46..25bb9c743a05 100644 --- a/drivers/iio/pressure/bmp280.h +++ b/drivers/iio/pressure/bmp280.h @@ -349,7 +349,6 @@ BMP280_NUM_TEMP_BYTES + \ BME280_NUM_HUMIDITY_BYTES) -#define BME280_NUM_MAX_CHANNELS 3 /* Core exported structs */ static const char *const bmp280_supply_names[] = { @@ -452,13 +451,6 @@ struct bmp280_data { */ int sampling_freq; - /* - * Data to push to userspace triggered buffer. Up to 3 channels and - * s64 timestamp, aligned. - */ - u8 sensor_data[ALIGN(sizeof(s32) * BME280_NUM_MAX_CHANNELS, sizeof(s64)) - + sizeof(s64)] __aligned(sizeof(s64)); - /* Value to hold the current operation mode of the device */ enum bmp280_op_mode op_mode; -- cgit v1.2.3 From fc0b0e82260f3b93f63325a89b4e4e17737b1421 Mon Sep 17 00:00:00 2001 From: Arthur Pilone Date: Mon, 21 Apr 2025 11:55:34 -0300 Subject: iio: adc: ad7091r-base: Remove duplicate code on volatile reg check Both ad7091r_writeable_reg() and ad7091r_volatile_reg() perform the same test, checking whether a given 'reg' code is AD7091R_REG_RESULT or AD7091R_REG_ALERT. As the volatile ad7091r registers happen to be the only read-only ones, the volatile_reg() function now returns the negated output of writeable_reg(). Co-developed-by: Bruno Stephan Signed-off-by: Bruno Stephan Co-developed-by: Andre de Lima Signed-off-by: Andre de Lima Signed-off-by: Arthur Pilone Reviewed-by: Marcelo Schmitt Link: https://patch.msgid.link/20250421145534.91146-1-arthurpilone@usp.br Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7091r-base.c | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-) diff --git a/drivers/iio/adc/ad7091r-base.c b/drivers/iio/adc/ad7091r-base.c index 931ff71b2888..647a7852dd8d 100644 --- a/drivers/iio/adc/ad7091r-base.c +++ b/drivers/iio/adc/ad7091r-base.c @@ -387,13 +387,8 @@ EXPORT_SYMBOL_NS_GPL(ad7091r_writeable_reg, "IIO_AD7091R"); bool ad7091r_volatile_reg(struct device *dev, unsigned int reg) { - switch (reg) { - case AD7091R_REG_RESULT: - case AD7091R_REG_ALERT: - return true; - default: - return false; - } + /* The volatile ad7091r registers are also the only RO ones. */ + return !ad7091r_writeable_reg(dev, reg); } EXPORT_SYMBOL_NS_GPL(ad7091r_volatile_reg, "IIO_AD7091R"); -- cgit v1.2.3 From 55d0392fb177307d99cc5e5b9d1234413f0e7cb1 Mon Sep 17 00:00:00 2001 From: Antoniu Miclaus Date: Tue, 22 Apr 2025 11:55:28 +0300 Subject: dt-bindings: iio: dac: ad7293: add vrefin support Add support for vrefin supply responsible for providing external reference to the SAR ADC within the part. Signed-off-by: Antoniu Miclaus Acked-by: Rob Herring (Arm) Link: https://patch.msgid.link/20250422085529.4407-1-antoniu.miclaus@analog.com Signed-off-by: Jonathan Cameron --- Documentation/devicetree/bindings/iio/dac/adi,ad7293.yaml | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad7293.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad7293.yaml index 5ee80bf6aa11..f994c1ef6d41 100644 --- a/Documentation/devicetree/bindings/iio/dac/adi,ad7293.yaml +++ b/Documentation/devicetree/bindings/iio/dac/adi,ad7293.yaml @@ -27,6 +27,8 @@ properties: vdrive-supply: true + vrefin-supply: true + reset-gpios: maxItems: 1 -- cgit v1.2.3 From cdbc8b99ad3b50dc1a5a8bfca3beb4f8e415e207 Mon Sep 17 00:00:00 2001 From: Antoniu Miclaus Date: Tue, 22 Apr 2025 11:55:29 +0300 Subject: iio: dac: ad7293: add adc reference configuration MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add support for configurating the ADC reference (internal/external). According to the datasheet, the external reference is enabled by default. Signed-off-by: Antoniu Miclaus Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250422085529.4407-2-antoniu.miclaus@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/dac/ad7293.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/iio/dac/ad7293.c b/drivers/iio/dac/ad7293.c index 99fa2d1f8299..c3797e40cdd9 100644 --- a/drivers/iio/dac/ad7293.c +++ b/drivers/iio/dac/ad7293.c @@ -114,6 +114,7 @@ #define AD7293_REG_DATA_RAW_MSK GENMASK(15, 4) #define AD7293_REG_VINX_RANGE_GET_CH_MSK(x, ch) (((x) >> (ch)) & 0x1) #define AD7293_REG_VINX_RANGE_SET_CH_MSK(x, ch) (((x) & 0x1) << (ch)) +#define AD7293_GENERAL_ADC_REF_MSK BIT(7) #define AD7293_CHIP_ID 0x18 enum ad7293_ch_type { @@ -141,6 +142,7 @@ struct ad7293_state { /* Protect against concurrent accesses to the device, page selection and data content */ struct mutex lock; struct gpio_desc *gpio_reset; + bool vrefin_en; u8 page_select; u8 data[3] __aligned(IIO_DMA_MINALIGN); }; @@ -785,6 +787,12 @@ static int ad7293_properties_parse(struct ad7293_state *st) if (ret) return dev_err_probe(&spi->dev, ret, "failed to enable VDRIVE\n"); + ret = devm_regulator_get_enable_optional(&spi->dev, "vrefin"); + if (ret < 0 && ret != -ENODEV) + return dev_err_probe(&spi->dev, ret, "failed to enable VREFIN\n"); + + st->vrefin_en = ret != -ENODEV; + st->gpio_reset = devm_gpiod_get_optional(&st->spi->dev, "reset", GPIOD_OUT_HIGH); if (IS_ERR(st->gpio_reset)) @@ -818,6 +826,11 @@ static int ad7293_init(struct ad7293_state *st) return -EINVAL; } + if (!st->vrefin_en) + return __ad7293_spi_update_bits(st, AD7293_REG_GENERAL, + AD7293_GENERAL_ADC_REF_MSK, + AD7293_GENERAL_ADC_REF_MSK); + return 0; } -- cgit v1.2.3 From 6eb974967a86d16bd4d19a9bf4869f4a8b85c572 Mon Sep 17 00:00:00 2001 From: AngeloGioacchino Del Regno Date: Wed, 16 Apr 2025 14:02:35 +0200 Subject: dt-bindings: iio: adc: Add compatible for Dimensity 1200 MT6893 Add a compatible for the Dimensity 1200 (MT6893) SoC; The AUXADC IP in this chip is fully compatible with the one found in MT8173. Signed-off-by: AngeloGioacchino Del Regno Acked-by: Rob Herring (Arm) Link: https://patch.msgid.link/20250416120235.147889-1-angelogioacchino.delregno@collabora.com Signed-off-by: Jonathan Cameron --- Documentation/devicetree/bindings/iio/adc/mediatek,mt2701-auxadc.yaml | 1 + 1 file changed, 1 insertion(+) diff --git a/Documentation/devicetree/bindings/iio/adc/mediatek,mt2701-auxadc.yaml b/Documentation/devicetree/bindings/iio/adc/mediatek,mt2701-auxadc.yaml index 6168b44ea72c..b489c984c1bb 100644 --- a/Documentation/devicetree/bindings/iio/adc/mediatek,mt2701-auxadc.yaml +++ b/Documentation/devicetree/bindings/iio/adc/mediatek,mt2701-auxadc.yaml @@ -34,6 +34,7 @@ properties: - const: mediatek,mt2701-auxadc - items: - enum: + - mediatek,mt6893-auxadc - mediatek,mt8183-auxadc - mediatek,mt8186-auxadc - mediatek,mt8188-auxadc -- cgit v1.2.3 From 017294e5a68ab2d09b380f912b30d36fc81edaa1 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Fri, 2 May 2025 10:42:16 -0500 Subject: iio: adc: ad7606_spi: add offload scan mask check MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Validate the scan mask when SPI offloading is being used. Since this family of ADCs is simultaneous sampling, there isn't a way to selectively disable channels when reading sample data. (Technically, AD7616 has a sequencer so the driver could have some control, but that is for another day). For "regular" IIO triggered buffer reads, this isn't a problem and the IIO core will demux the data and ignore data from disabled channels. However, since SPI offloading is done completely in hardware, we don't have a way to do the same. So before this patch, if less than all channels were enabled, the data would be misplaced in the buffer. By adding a check in update_scan_mode, we can fail to enable the buffer instead of having bad data returned to userspace. Fixes: e96d35faf357 ("iio: adc: ad7606: add SPI offload support") Signed-off-by: David Lechner Reviewed-by: Andy Shevchenko Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250502-iio-adc-ad7606_spi-fix-offload-scan-mask-check-v2-1-e70c6d71baa3@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7606_spi.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/drivers/iio/adc/ad7606_spi.c b/drivers/iio/adc/ad7606_spi.c index 997be483ebb9..5b5b4677273b 100644 --- a/drivers/iio/adc/ad7606_spi.c +++ b/drivers/iio/adc/ad7606_spi.c @@ -5,6 +5,7 @@ * Copyright 2011 Analog Devices Inc. */ +#include #include #include #include @@ -329,19 +330,44 @@ static int ad7606_spi_offload_probe(struct device *dev, return 0; } +static int ad7606_spi_update_scan_mode(struct iio_dev *indio_dev, + const unsigned long *scan_mask) +{ + struct ad7606_state *st = iio_priv(indio_dev); + + if (st->offload_en) { + unsigned int num_adc_ch = st->chip_info->num_adc_channels; + + /* + * SPI offload requires that all channels are enabled since + * there isn't a way to selectively disable channels that get + * read (this is simultaneous sampling ADC) and the DMA buffer + * has no way of demuxing the data to filter out unwanted + * channels. + */ + if (bitmap_weight(scan_mask, num_adc_ch) != num_adc_ch) + return -EINVAL; + } + + return 0; +} + static const struct ad7606_bus_ops ad7606_spi_bops = { .offload_config = ad7606_spi_offload_probe, .read_block = ad7606_spi_read_block, + .update_scan_mode = ad7606_spi_update_scan_mode, }; static const struct ad7606_bus_ops ad7607_spi_bops = { .offload_config = ad7606_spi_offload_probe, .read_block = ad7606_spi_read_block14to16, + .update_scan_mode = ad7606_spi_update_scan_mode, }; static const struct ad7606_bus_ops ad7608_spi_bops = { .offload_config = ad7606_spi_offload_probe, .read_block = ad7606_spi_read_block18to32, + .update_scan_mode = ad7606_spi_update_scan_mode, }; static const struct ad7606_bus_ops ad7616_spi_bops = { @@ -350,6 +376,7 @@ static const struct ad7606_bus_ops ad7616_spi_bops = { .reg_read = ad7606_spi_reg_read, .reg_write = ad7606_spi_reg_write, .rd_wr_cmd = ad7616_spi_rd_wr_cmd, + .update_scan_mode = ad7606_spi_update_scan_mode, }; static const struct ad7606_bus_ops ad7606b_spi_bops = { @@ -359,6 +386,7 @@ static const struct ad7606_bus_ops ad7606b_spi_bops = { .reg_write = ad7606_spi_reg_write, .rd_wr_cmd = ad7606b_spi_rd_wr_cmd, .sw_mode_config = ad7606b_sw_mode_config, + .update_scan_mode = ad7606_spi_update_scan_mode, }; static const struct ad7606_bus_ops ad7606c_18_spi_bops = { @@ -368,6 +396,7 @@ static const struct ad7606_bus_ops ad7606c_18_spi_bops = { .reg_write = ad7606_spi_reg_write, .rd_wr_cmd = ad7606b_spi_rd_wr_cmd, .sw_mode_config = ad7606b_sw_mode_config, + .update_scan_mode = ad7606_spi_update_scan_mode, }; static const struct ad7606_bus_info ad7605_4_bus_info = { -- cgit v1.2.3 From 64794edd47ecda20aa065479f4d20b31d482a561 Mon Sep 17 00:00:00 2001 From: Antoniu Miclaus Date: Fri, 2 May 2025 13:00:16 +0300 Subject: MAINTAINERS: add maintainers for ad4851 driver MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add the ad4851 entry in the MAINTAINERS file. Signed-off-by: Antoniu Miclaus Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250502100016.26279-1-antoniu.miclaus@analog.com Signed-off-by: Jonathan Cameron --- MAINTAINERS | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index 4a0089db6670..d5a985ae62bb 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1350,6 +1350,16 @@ F: Documentation/iio/ad4695.rst F: drivers/iio/adc/ad4695.c F: include/dt-bindings/iio/adc/adi,ad4695.h +ANALOG DEVICES INC AD4851 DRIVER +M: Sergiu Cuciurean +M: Dragos Bogdan +R: Antoniu Miclaus +L: linux-iio@vger.kernel.org +S: Supported +W: https://ez.analog.com/linux-software-drivers +F: Documentation/devicetree/bindings/iio/adc/adi,ad4851.yaml +F: drivers/iio/adc/ad4851.c + ANALOG DEVICES INC AD7091R DRIVER M: Marcelo Schmitt L: linux-iio@vger.kernel.org -- cgit v1.2.3 From 413e1d6a95fcbbc048b6fce32c523e0a225275cb Mon Sep 17 00:00:00 2001 From: David Lechner Date: Mon, 28 Apr 2025 21:17:14 -0500 Subject: iio: adc: ad7606: explicit timestamp alignment MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Use struct with aligned_s64 timestamp to make timestamp alignment explicit. Technically, what we have works because for all known architectures, IIO_DMA_MINALIGN is a multiple of __alignof__(s64). But this way, we don't have to make people read the comments to know why there are extra elements in each buffer. Signed-off-by: David Lechner Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250428-iio-adc-ad7606-fix-buffer-alignment-v1-1-88dfc57e5df0@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7606.h | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/drivers/iio/adc/ad7606.h b/drivers/iio/adc/ad7606.h index 89d49551eaf5..441e62c521bc 100644 --- a/drivers/iio/adc/ad7606.h +++ b/drivers/iio/adc/ad7606.h @@ -155,12 +155,15 @@ struct ad7606_state { /* * DMA (thus cache coherency maintenance) may require the * transfer buffers to live in their own cache lines. - * 16 * 16-bit samples + 64-bit timestamp - for AD7616 - * 8 * 32-bit samples + 64-bit timestamp - for AD7616C-18 (and similar) + * 16 * 16-bit samples for AD7616 + * 8 * 32-bit samples for AD7616C-18 (and similar) */ - union { - u16 buf16[20]; - u32 buf32[10]; + struct { + union { + u16 buf16[16]; + u32 buf32[8]; + }; + aligned_s64 timestamp; } data __aligned(IIO_DMA_MINALIGN); __be16 d16[2]; }; -- cgit v1.2.3 From 7e00d74eacf77c98a60e7c754a9e5f73d8832095 Mon Sep 17 00:00:00 2001 From: Chelsy Ratnawat Date: Thu, 1 May 2025 17:36:55 -0700 Subject: HID: sensor-hub: Fix typo and improve documentation for sensor_hub_remove_callback() Fixed a typo in "registered" and improved grammar for better readability and consistency with kernel-doc standards. No functional changes. Signed-off-by: Chelsy Ratnawat Reviewed-by: David Lechner Link: https://patch.msgid.link/20250502003655.1943000-1-chelsyratnawat2001@gmail.com Signed-off-by: Jonathan Cameron --- include/linux/hid-sensor-hub.h | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/include/linux/hid-sensor-hub.h b/include/linux/hid-sensor-hub.h index c27329e2a5ad..0f9f7df865db 100644 --- a/include/linux/hid-sensor-hub.h +++ b/include/linux/hid-sensor-hub.h @@ -128,12 +128,13 @@ int sensor_hub_register_callback(struct hid_sensor_hub_device *hsdev, struct hid_sensor_hub_callbacks *usage_callback); /** -* sensor_hub_remove_callback() - Remove client callbacks +* sensor_hub_remove_callback() - Remove client callback * @hsdev: Hub device instance. -* @usage_id: Usage id of the client (E.g. 0x200076 for Gyro). +* @usage_id: Usage id of the client (e.g. 0x200076 for gyro). * -* If there is a callback registred, this call will remove that -* callbacks, so that it will stop data and event notifications. +* Removes a previously registered callback for the given usage_id +* and hsdev. Once removed, the client will no longer receive data or +* event notifications. */ int sensor_hub_remove_callback(struct hid_sensor_hub_device *hsdev, u32 usage_id); -- cgit v1.2.3 From 0cec113181c525a7dcfea3b366f56ef531d5bdf1 Mon Sep 17 00:00:00 2001 From: Kim Seer Paller Date: Tue, 29 Apr 2025 10:19:16 +0800 Subject: iio: ABI: add new DAC powerdown mode Add a new powerdown mode for DACs with 7.7kohm and 32kohm resistor to GND. Reviewed-by: David Lechner Signed-off-by: Kim Seer Paller Link: https://patch.msgid.link/20250429-togreg-v7-1-0af9c543b545@analog.com Signed-off-by: Jonathan Cameron --- Documentation/ABI/testing/sysfs-bus-iio | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio index 33c09c4ac60a..190bfcc1e836 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio +++ b/Documentation/ABI/testing/sysfs-bus-iio @@ -741,7 +741,9 @@ Description: 1kohm_to_gnd: connected to ground via an 1kOhm resistor, 2.5kohm_to_gnd: connected to ground via a 2.5kOhm resistor, 6kohm_to_gnd: connected to ground via a 6kOhm resistor, + 7.7kohm_to_gnd: connected to ground via a 7.7kOhm resistor, 20kohm_to_gnd: connected to ground via a 20kOhm resistor, + 32kohm_to_gnd: connected to ground via a 32kOhm resistor, 42kohm_to_gnd: connected to ground via a 42kOhm resistor, 90kohm_to_gnd: connected to ground via a 90kOhm resistor, 100kohm_to_gnd: connected to ground via an 100kOhm resistor, -- cgit v1.2.3 From 6856e3617158c9a1990fb0d080734506abf36b89 Mon Sep 17 00:00:00 2001 From: Kim Seer Paller Date: Tue, 29 Apr 2025 10:19:17 +0800 Subject: dt-bindings: iio: dac: Add adi,ad3530r.yaml MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Document the AD3530/AD3530R (8-channel) and AD3531/AD3531R (4-channel) low-power, 16-bit, buffered voltage output DACs with software- programmable gain controls. They provide full-scale output spans of 2.5V or 5V for reference voltages of 2.5V. These devices operate on a single 2.7V to 5.5V supply and are guaranteed to be monotonic by design. The "R" variants include a 2.5V, 5ppm/°C internal reference, which is disabled by default. Reviewed-by: Krzysztof Kozlowski Reviewed-by: David Lechner Signed-off-by: Kim Seer Paller Link: https://patch.msgid.link/20250429-togreg-v7-2-0af9c543b545@analog.com Signed-off-by: Jonathan Cameron --- .../devicetree/bindings/iio/dac/adi,ad3530r.yaml | 100 +++++++++++++++++++++ MAINTAINERS | 7 ++ 2 files changed, 107 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/dac/adi,ad3530r.yaml diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad3530r.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad3530r.yaml new file mode 100644 index 000000000000..a355d52a9d64 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/dac/adi,ad3530r.yaml @@ -0,0 +1,100 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/dac/adi,ad3530r.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Analog Devices AD3530R and Similar DACs + +maintainers: + - Kim Seer Paller + +description: | + The AD3530/AD3530R (8-channel) and AD3531/AD3531R (4-channel) are low-power, + 16-bit, buffered voltage output digital-to-analog converters (DACs) with + software-programmable gain controls, providing full-scale output spans of 2.5V + or 5V for reference voltages of 2.5V. These devices operate from a single 2.7V + to 5.5V supply and are guaranteed monotonic by design. The "R" variants + include a 2.5V, 5ppm/°C internal reference, which is disabled by default. + Datasheet can be found here: + https://www.analog.com/media/en/technical-documentation/data-sheets/ad3530_ad530r.pdf + https://www.analog.com/media/en/technical-documentation/data-sheets/ad3531-ad3531r.pdf + +properties: + compatible: + enum: + - adi,ad3530 + - adi,ad3530r + - adi,ad3531 + - adi,ad3531r + + reg: + maxItems: 1 + + spi-max-frequency: + maximum: 50000000 + + vdd-supply: + description: Power Supply Input. + + iovdd-supply: + description: Digital Power Supply Input. + + io-channels: + description: + ADC channel used to monitor internal die temperature, output voltages, and + current of a selected channel via the MUXOUT pin. + maxItems: 1 + + ref-supply: + description: + Reference Input/Output. The voltage at the REF pin sets the full-scale + range of all channels. If not provided the internal reference is used and + also provided on the VREF pin. + + reset-gpios: + description: + Active low signal that is falling edge sensitive. When it is deasserted, + the digital core initialization is performed and all DAC registers except + the Interface Configuration A register are reset to their default values. + maxItems: 1 + + ldac-gpios: + description: + LDAC pin to be used as a hardware trigger to update the DAC channels. If + not present, the DAC channels are updated by Software LDAC. + maxItems: 1 + + adi,range-double: + description: + Configure the output range for all channels. If the property is present, + the output will range from 0V to 2Vref. If the property is not present, + the output will range from 0V to Vref. + type: boolean + +required: + - compatible + - reg + - vdd-supply + - iovdd-supply + +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false + +examples: + - | + spi { + #address-cells = <1>; + #size-cells = <0>; + dac@0 { + compatible = "adi,ad3530r"; + reg = <0>; + spi-max-frequency = <1000000>; + + vdd-supply = <&vdd>; + iovdd-supply = <&iovdd>; + }; + }; +... diff --git a/MAINTAINERS b/MAINTAINERS index d5a985ae62bb..fde1871a1879 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1300,6 +1300,13 @@ T: git git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git T: git git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git F: drivers/net/amt.c +ANALOG DEVICES INC AD3530R DRIVER +M: Kim Seer Paller +L: linux-iio@vger.kernel.org +S: Supported +W: https://ez.analog.com/linux-software-drivers +F: Documentation/devicetree/bindings/iio/dac/adi,ad3530r.yaml + ANALOG DEVICES INC AD3552R DRIVER M: Nuno Sá L: linux-iio@vger.kernel.org -- cgit v1.2.3 From 93583174a3dffdcf604507106cb1d404bd65669d Mon Sep 17 00:00:00 2001 From: Kim Seer Paller Date: Tue, 29 Apr 2025 10:19:18 +0800 Subject: iio: dac: ad3530r: Add driver for AD3530R and AD3531R MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The AD3530/AD3530R (8-channel) and AD3531/AD3531R (4-channel) are low-power, 16-bit, buffered voltage output DACs with software- programmable gain controls, providing full-scale output spans of 2.5V or 5V for reference voltages of 2.5V. These devices operate from a single 2.7V to 5.5V supply and are guaranteed monotonic by design. The "R" variants include a 2.5V, 5ppm/°C internal reference, which is disabled by default. Support for monitoring internal die temperature, output voltages, and current of a selected channel via the MUXOUT pin using an external ADC is currently not implemented. Reviewed-by: David Lechner Signed-off-by: Kim Seer Paller Reviewed-by: Andy Shevchenko Link: https://patch.msgid.link/20250429-togreg-v7-3-0af9c543b545@analog.com Signed-off-by: Jonathan Cameron --- MAINTAINERS | 1 + drivers/iio/dac/Kconfig | 11 + drivers/iio/dac/Makefile | 1 + drivers/iio/dac/ad3530r.c | 517 ++++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 530 insertions(+) create mode 100644 drivers/iio/dac/ad3530r.c diff --git a/MAINTAINERS b/MAINTAINERS index fde1871a1879..cc9582b14ced 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1306,6 +1306,7 @@ L: linux-iio@vger.kernel.org S: Supported W: https://ez.analog.com/linux-software-drivers F: Documentation/devicetree/bindings/iio/dac/adi,ad3530r.yaml +F: drivers/iio/dac/ad3530r.c ANALOG DEVICES INC AD3552R DRIVER M: Nuno Sá diff --git a/drivers/iio/dac/Kconfig b/drivers/iio/dac/Kconfig index 4811ea973125..e0996dc014a3 100644 --- a/drivers/iio/dac/Kconfig +++ b/drivers/iio/dac/Kconfig @@ -6,6 +6,17 @@ menu "Digital to analog converters" +config AD3530R + tristate "Analog Devices AD3530R and Similar DACs driver" + depends on SPI + select REGMAP_SPI + help + Say yes here to build support for Analog Devices AD3530R, AD3531R + Digital to Analog Converter. + + To compile this driver as a module, choose M here: the + module will be called ad3530r. + config AD3552R_HS tristate "Analog Devices AD3552R DAC High Speed driver" select AD3552R_LIB diff --git a/drivers/iio/dac/Makefile b/drivers/iio/dac/Makefile index 8dd6cce81ed1..3684cd52b7fa 100644 --- a/drivers/iio/dac/Makefile +++ b/drivers/iio/dac/Makefile @@ -4,6 +4,7 @@ # # When adding new entries keep the list in alphabetical order +obj-$(CONFIG_AD3530R) += ad3530r.o obj-$(CONFIG_AD3552R_HS) += ad3552r-hs.o obj-$(CONFIG_AD3552R_LIB) += ad3552r-common.o obj-$(CONFIG_AD3552R) += ad3552r.o diff --git a/drivers/iio/dac/ad3530r.c b/drivers/iio/dac/ad3530r.c new file mode 100644 index 000000000000..f9752a571aa5 --- /dev/null +++ b/drivers/iio/dac/ad3530r.c @@ -0,0 +1,517 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * AD3530R/AD3530 8-channel, 16-bit Voltage Output DAC Driver + * AD3531R/AD3531 4-channel, 16-bit Voltage Output DAC Driver + * + * Copyright 2025 Analog Devices Inc. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define AD3530R_INTERFACE_CONFIG_A 0x00 +#define AD3530R_OUTPUT_OPERATING_MODE_0 0x20 +#define AD3530R_OUTPUT_OPERATING_MODE_1 0x21 +#define AD3530R_OUTPUT_CONTROL_0 0x2A +#define AD3530R_REFERENCE_CONTROL_0 0x3C +#define AD3530R_SW_LDAC_TRIG_A 0xE5 +#define AD3530R_INPUT_CH 0xEB +#define AD3530R_MAX_REG_ADDR 0xF9 + +#define AD3531R_SW_LDAC_TRIG_A 0xDD +#define AD3531R_INPUT_CH 0xE3 + +#define AD3530R_SLD_TRIG_A BIT(7) +#define AD3530R_OUTPUT_CONTROL_RANGE BIT(2) +#define AD3530R_REFERENCE_CONTROL_SEL BIT(0) +#define AD3530R_REG_VAL_MASK GENMASK(15, 0) +#define AD3530R_OP_MODE_CHAN_MSK(chan) (GENMASK(1, 0) << 2 * (chan)) + +#define AD3530R_SW_RESET (BIT(7) | BIT(0)) +#define AD3530R_INTERNAL_VREF_mV 2500 +#define AD3530R_LDAC_PULSE_US 100 + +#define AD3530R_DAC_MAX_VAL GENMASK(15, 0) +#define AD3530R_MAX_CHANNELS 8 +#define AD3531R_MAX_CHANNELS 4 + +/* Non-constant mask variant of FIELD_PREP() */ +#define field_prep(_mask, _val) (((_val) << (ffs(_mask) - 1)) & (_mask)) + +enum ad3530r_mode { + AD3530R_NORMAL_OP, + AD3530R_POWERDOWN_1K, + AD3530R_POWERDOWN_7K7, + AD3530R_POWERDOWN_32K, +}; + +struct ad3530r_chan { + enum ad3530r_mode powerdown_mode; + bool powerdown; +}; + +struct ad3530r_chip_info { + const char *name; + const struct iio_chan_spec *channels; + int (*input_ch_reg)(unsigned int channel); + unsigned int num_channels; + unsigned int sw_ldac_trig_reg; + bool internal_ref_support; +}; + +struct ad3530r_state { + struct regmap *regmap; + /* lock to protect against multiple access to the device and shared data */ + struct mutex lock; + struct ad3530r_chan chan[AD3530R_MAX_CHANNELS]; + const struct ad3530r_chip_info *chip_info; + struct gpio_desc *ldac_gpio; + int vref_mV; + /* + * DMA (thus cache coherency maintenance) may require the transfer + * buffers to live in their own cache lines. + */ + __be16 buf __aligned(IIO_DMA_MINALIGN); +}; + +static int ad3530r_input_ch_reg(unsigned int channel) +{ + return 2 * channel + AD3530R_INPUT_CH; +} + +static int ad3531r_input_ch_reg(unsigned int channel) +{ + return 2 * channel + AD3531R_INPUT_CH; +} + +static const char * const ad3530r_powerdown_modes[] = { + "1kohm_to_gnd", + "7.7kohm_to_gnd", + "32kohm_to_gnd", +}; + +static int ad3530r_get_powerdown_mode(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan) +{ + struct ad3530r_state *st = iio_priv(indio_dev); + + guard(mutex)(&st->lock); + return st->chan[chan->channel].powerdown_mode - 1; +} + +static int ad3530r_set_powerdown_mode(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, + unsigned int mode) +{ + struct ad3530r_state *st = iio_priv(indio_dev); + + guard(mutex)(&st->lock); + st->chan[chan->channel].powerdown_mode = mode + 1; + + return 0; +} + +static const struct iio_enum ad3530r_powerdown_mode_enum = { + .items = ad3530r_powerdown_modes, + .num_items = ARRAY_SIZE(ad3530r_powerdown_modes), + .get = ad3530r_get_powerdown_mode, + .set = ad3530r_set_powerdown_mode, +}; + +static ssize_t ad3530r_get_dac_powerdown(struct iio_dev *indio_dev, + uintptr_t private, + const struct iio_chan_spec *chan, + char *buf) +{ + struct ad3530r_state *st = iio_priv(indio_dev); + + guard(mutex)(&st->lock); + return sysfs_emit(buf, "%d\n", st->chan[chan->channel].powerdown); +} + +static ssize_t ad3530r_set_dac_powerdown(struct iio_dev *indio_dev, + uintptr_t private, + const struct iio_chan_spec *chan, + const char *buf, size_t len) +{ + struct ad3530r_state *st = iio_priv(indio_dev); + int ret; + unsigned int reg, pdmode, mask, val; + bool powerdown; + + ret = kstrtobool(buf, &powerdown); + if (ret) + return ret; + + guard(mutex)(&st->lock); + reg = chan->channel < AD3531R_MAX_CHANNELS ? + AD3530R_OUTPUT_OPERATING_MODE_0 : + AD3530R_OUTPUT_OPERATING_MODE_1; + pdmode = powerdown ? st->chan[chan->channel].powerdown_mode : 0; + mask = AD3530R_OP_MODE_CHAN_MSK(chan->channel); + val = field_prep(mask, pdmode); + + ret = regmap_update_bits(st->regmap, reg, mask, val); + if (ret) + return ret; + + st->chan[chan->channel].powerdown = powerdown; + + return len; +} + +static int ad3530r_trigger_hw_ldac(struct gpio_desc *ldac_gpio) +{ + gpiod_set_value_cansleep(ldac_gpio, 1); + fsleep(AD3530R_LDAC_PULSE_US); + gpiod_set_value_cansleep(ldac_gpio, 0); + + return 0; +} + +static int ad3530r_dac_write(struct ad3530r_state *st, unsigned int chan, + unsigned int val) +{ + int ret; + + guard(mutex)(&st->lock); + st->buf = cpu_to_be16(val); + + ret = regmap_bulk_write(st->regmap, st->chip_info->input_ch_reg(chan), + &st->buf, sizeof(st->buf)); + if (ret) + return ret; + + if (st->ldac_gpio) + return ad3530r_trigger_hw_ldac(st->ldac_gpio); + + return regmap_set_bits(st->regmap, st->chip_info->sw_ldac_trig_reg, + AD3530R_SLD_TRIG_A); +} + +static int ad3530r_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int *val, int *val2, long info) +{ + struct ad3530r_state *st = iio_priv(indio_dev); + int ret; + + guard(mutex)(&st->lock); + switch (info) { + case IIO_CHAN_INFO_RAW: + ret = regmap_bulk_read(st->regmap, + st->chip_info->input_ch_reg(chan->channel), + &st->buf, sizeof(st->buf)); + if (ret) + return ret; + + *val = FIELD_GET(AD3530R_REG_VAL_MASK, be16_to_cpu(st->buf)); + + return IIO_VAL_INT; + case IIO_CHAN_INFO_SCALE: + *val = st->vref_mV; + *val2 = 16; + + return IIO_VAL_FRACTIONAL_LOG2; + default: + return -EINVAL; + } +} + +static int ad3530r_write_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int val, int val2, long info) +{ + struct ad3530r_state *st = iio_priv(indio_dev); + + switch (info) { + case IIO_CHAN_INFO_RAW: + if (val < 0 || val > AD3530R_DAC_MAX_VAL) + return -EINVAL; + + return ad3530r_dac_write(st, chan->channel, val); + default: + return -EINVAL; + } +} + +static int ad3530r_reg_access(struct iio_dev *indio_dev, unsigned int reg, + unsigned int writeval, unsigned int *readval) +{ + struct ad3530r_state *st = iio_priv(indio_dev); + + if (readval) + return regmap_read(st->regmap, reg, readval); + + return regmap_write(st->regmap, reg, writeval); +} + +static const struct iio_chan_spec_ext_info ad3530r_ext_info[] = { + { + .name = "powerdown", + .shared = IIO_SEPARATE, + .read = ad3530r_get_dac_powerdown, + .write = ad3530r_set_dac_powerdown, + }, + IIO_ENUM("powerdown_mode", IIO_SEPARATE, &ad3530r_powerdown_mode_enum), + IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, + &ad3530r_powerdown_mode_enum), + { } +}; + +#define AD3530R_CHAN(_chan) \ +{ \ + .type = IIO_VOLTAGE, \ + .indexed = 1, \ + .channel = _chan, \ + .output = 1, \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \ + BIT(IIO_CHAN_INFO_SCALE), \ + .ext_info = ad3530r_ext_info, \ +} + +static const struct iio_chan_spec ad3530r_channels[] = { + AD3530R_CHAN(0), + AD3530R_CHAN(1), + AD3530R_CHAN(2), + AD3530R_CHAN(3), + AD3530R_CHAN(4), + AD3530R_CHAN(5), + AD3530R_CHAN(6), + AD3530R_CHAN(7), +}; + +static const struct iio_chan_spec ad3531r_channels[] = { + AD3530R_CHAN(0), + AD3530R_CHAN(1), + AD3530R_CHAN(2), + AD3530R_CHAN(3), +}; + +static const struct ad3530r_chip_info ad3530_chip = { + .name = "ad3530", + .channels = ad3530r_channels, + .num_channels = ARRAY_SIZE(ad3530r_channels), + .sw_ldac_trig_reg = AD3530R_SW_LDAC_TRIG_A, + .input_ch_reg = ad3530r_input_ch_reg, + .internal_ref_support = false, +}; + +static const struct ad3530r_chip_info ad3530r_chip = { + .name = "ad3530r", + .channels = ad3530r_channels, + .num_channels = ARRAY_SIZE(ad3530r_channels), + .sw_ldac_trig_reg = AD3530R_SW_LDAC_TRIG_A, + .input_ch_reg = ad3530r_input_ch_reg, + .internal_ref_support = true, +}; + +static const struct ad3530r_chip_info ad3531_chip = { + .name = "ad3531", + .channels = ad3531r_channels, + .num_channels = ARRAY_SIZE(ad3531r_channels), + .sw_ldac_trig_reg = AD3531R_SW_LDAC_TRIG_A, + .input_ch_reg = ad3531r_input_ch_reg, + .internal_ref_support = false, +}; + +static const struct ad3530r_chip_info ad3531r_chip = { + .name = "ad3531r", + .channels = ad3531r_channels, + .num_channels = ARRAY_SIZE(ad3531r_channels), + .sw_ldac_trig_reg = AD3531R_SW_LDAC_TRIG_A, + .input_ch_reg = ad3531r_input_ch_reg, + .internal_ref_support = true, +}; + +static int ad3530r_setup(struct ad3530r_state *st, int external_vref_uV) +{ + struct device *dev = regmap_get_device(st->regmap); + struct gpio_desc *reset_gpio; + int i, ret; + u8 range_multiplier, val; + + reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH); + if (IS_ERR(reset_gpio)) + return dev_err_probe(dev, PTR_ERR(reset_gpio), + "Failed to get reset GPIO\n"); + + if (reset_gpio) { + /* Perform hardware reset */ + fsleep(1 * USEC_PER_MSEC); + gpiod_set_value_cansleep(reset_gpio, 0); + } else { + /* Perform software reset */ + ret = regmap_update_bits(st->regmap, AD3530R_INTERFACE_CONFIG_A, + AD3530R_SW_RESET, AD3530R_SW_RESET); + if (ret) + return ret; + } + + fsleep(10 * USEC_PER_MSEC); + + range_multiplier = 1; + if (device_property_read_bool(dev, "adi,range-double")) { + ret = regmap_set_bits(st->regmap, AD3530R_OUTPUT_CONTROL_0, + AD3530R_OUTPUT_CONTROL_RANGE); + if (ret) + return ret; + + range_multiplier = 2; + } + + if (external_vref_uV) { + st->vref_mV = range_multiplier * external_vref_uV / MILLI; + } else { + ret = regmap_set_bits(st->regmap, AD3530R_REFERENCE_CONTROL_0, + AD3530R_REFERENCE_CONTROL_SEL); + if (ret) + return ret; + + st->vref_mV = range_multiplier * AD3530R_INTERNAL_VREF_mV; + } + + /* Set normal operating mode for all channels */ + val = FIELD_PREP(AD3530R_OP_MODE_CHAN_MSK(0), AD3530R_NORMAL_OP) | + FIELD_PREP(AD3530R_OP_MODE_CHAN_MSK(1), AD3530R_NORMAL_OP) | + FIELD_PREP(AD3530R_OP_MODE_CHAN_MSK(2), AD3530R_NORMAL_OP) | + FIELD_PREP(AD3530R_OP_MODE_CHAN_MSK(3), AD3530R_NORMAL_OP); + + ret = regmap_write(st->regmap, AD3530R_OUTPUT_OPERATING_MODE_0, val); + if (ret) + return ret; + + if (st->chip_info->num_channels > 4) { + ret = regmap_write(st->regmap, AD3530R_OUTPUT_OPERATING_MODE_1, + val); + if (ret) + return ret; + } + + for (i = 0; i < st->chip_info->num_channels; i++) + st->chan[i].powerdown_mode = AD3530R_POWERDOWN_32K; + + st->ldac_gpio = devm_gpiod_get_optional(dev, "ldac", GPIOD_OUT_LOW); + if (IS_ERR(st->ldac_gpio)) + return dev_err_probe(dev, PTR_ERR(st->ldac_gpio), + "Failed to get ldac GPIO\n"); + + return 0; +} + +static const struct regmap_config ad3530r_regmap_config = { + .reg_bits = 16, + .val_bits = 8, + .max_register = AD3530R_MAX_REG_ADDR, +}; + +static const struct iio_info ad3530r_info = { + .read_raw = ad3530r_read_raw, + .write_raw = ad3530r_write_raw, + .debugfs_reg_access = ad3530r_reg_access, +}; + +static int ad3530r_probe(struct spi_device *spi) +{ + static const char * const regulators[] = { "vdd", "iovdd" }; + struct device *dev = &spi->dev; + struct iio_dev *indio_dev; + struct ad3530r_state *st; + int ret, external_vref_uV; + + indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st)); + if (!indio_dev) + return -ENOMEM; + + st = iio_priv(indio_dev); + + st->regmap = devm_regmap_init_spi(spi, &ad3530r_regmap_config); + if (IS_ERR(st->regmap)) + return dev_err_probe(dev, PTR_ERR(st->regmap), + "Failed to init regmap"); + + ret = devm_mutex_init(dev, &st->lock); + if (ret) + return ret; + + st->chip_info = spi_get_device_match_data(spi); + if (!st->chip_info) + return -ENODEV; + + ret = devm_regulator_bulk_get_enable(dev, ARRAY_SIZE(regulators), + regulators); + if (ret) + return dev_err_probe(dev, ret, "Failed to enable regulators\n"); + + external_vref_uV = devm_regulator_get_enable_read_voltage(dev, "ref"); + if (external_vref_uV < 0 && external_vref_uV != -ENODEV) + return external_vref_uV; + + if (external_vref_uV == -ENODEV) + external_vref_uV = 0; + + if (!st->chip_info->internal_ref_support && external_vref_uV == 0) + return -ENODEV; + + ret = ad3530r_setup(st, external_vref_uV); + if (ret) + return ret; + + indio_dev->name = st->chip_info->name; + indio_dev->info = &ad3530r_info; + indio_dev->modes = INDIO_DIRECT_MODE; + indio_dev->channels = st->chip_info->channels; + indio_dev->num_channels = st->chip_info->num_channels; + + return devm_iio_device_register(&spi->dev, indio_dev); +} + +static const struct spi_device_id ad3530r_id[] = { + { "ad3530", (kernel_ulong_t)&ad3530_chip }, + { "ad3530r", (kernel_ulong_t)&ad3530r_chip }, + { "ad3531", (kernel_ulong_t)&ad3531_chip }, + { "ad3531r", (kernel_ulong_t)&ad3531r_chip }, + { } +}; +MODULE_DEVICE_TABLE(spi, ad3530r_id); + +static const struct of_device_id ad3530r_of_match[] = { + { .compatible = "adi,ad3530", .data = &ad3530_chip }, + { .compatible = "adi,ad3530r", .data = &ad3530r_chip }, + { .compatible = "adi,ad3531", .data = &ad3531_chip }, + { .compatible = "adi,ad3531r", .data = &ad3531r_chip }, + { } +}; +MODULE_DEVICE_TABLE(of, ad3530r_of_match); + +static struct spi_driver ad3530r_driver = { + .driver = { + .name = "ad3530r", + .of_match_table = ad3530r_of_match, + }, + .probe = ad3530r_probe, + .id_table = ad3530r_id, +}; +module_spi_driver(ad3530r_driver); + +MODULE_AUTHOR("Kim Seer Paller "); +MODULE_DESCRIPTION("Analog Devices AD3530R and Similar DACs Driver"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3 From 15c82338b3640daab2b7a2718a9eed93cfd8537a Mon Sep 17 00:00:00 2001 From: David Lechner Date: Mon, 28 Apr 2025 15:23:04 -0500 Subject: iio: adc: ad4695: use u16 for buffer elements Change the type of the buffer elements to u16 since we currently only support 16-bit word size. The code was originally written to also allow for 32-bit word size when oversampling is enabled, but so far, oversampling is only implemented when using SPI offload and therefore doesn't use this buffer. AD4695_MAX_CHANNEL_SIZE macro is dropped since it no longer adds any value. AD4695_MAX_CHANNELS + 2 is changed to AD4695_MAX_CHANNELS + 1 because previously we were overallocating. AD4695_MAX_CHANNELS is the number of of voltage channels and + 1 is for the temperature channel. Signed-off-by: David Lechner Reviewed-by: Trevor Gamblin Link: https://patch.msgid.link/20250428-iio-introduce-iio_declare_buffer_with_ts-v4-2-6f7f6126f1cb@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad4695.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/drivers/iio/adc/ad4695.c b/drivers/iio/adc/ad4695.c index 68c6625db0d7..0c633d43e480 100644 --- a/drivers/iio/adc/ad4695.c +++ b/drivers/iio/adc/ad4695.c @@ -106,8 +106,6 @@ /* Max number of voltage input channels. */ #define AD4695_MAX_CHANNELS 16 -/* Max size of 1 raw sample in bytes. */ -#define AD4695_MAX_CHANNEL_SIZE 2 enum ad4695_in_pair { AD4695_IN_PAIR_REFGND, @@ -162,8 +160,8 @@ struct ad4695_state { struct spi_transfer buf_read_xfer[AD4695_MAX_CHANNELS * 2 + 3]; struct spi_message buf_read_msg; /* Raw conversion data received. */ - u8 buf[ALIGN((AD4695_MAX_CHANNELS + 2) * AD4695_MAX_CHANNEL_SIZE, - sizeof(s64)) + sizeof(s64)] __aligned(IIO_DMA_MINALIGN); + u16 buf[ALIGN((AD4695_MAX_CHANNELS + 1) * sizeof(u16), + sizeof(s64)) + sizeof(s64)] __aligned(IIO_DMA_MINALIGN); u16 raw_data; /* Commands to send for single conversion. */ u16 cnv_cmd; @@ -660,9 +658,8 @@ static int ad4695_buffer_preenable(struct iio_dev *indio_dev) iio_for_each_active_channel(indio_dev, bit) { xfer = &st->buf_read_xfer[num_xfer]; xfer->bits_per_word = 16; - xfer->rx_buf = &st->buf[rx_buf_offset]; + xfer->rx_buf = &st->buf[rx_buf_offset++]; xfer->len = 2; - rx_buf_offset += xfer->len; if (bit == temp_chan_bit) { temp_en = 1; -- cgit v1.2.3 From f62c49d8f32d6ce8871b01795498352775aa61db Mon Sep 17 00:00:00 2001 From: Marcus Folkesson Date: Mon, 28 Apr 2025 08:54:11 +0200 Subject: iio: adc: mcp3911: fix device dependent mappings for conversion result registers The conversion result registers differs between devices. Make sure the mapping is correct by using a device dependent .get_raw() callback function. Fixes: 732ad34260d3 ("iio: adc: mcp3911: add support for the whole MCP39xx family") Co-developed-by: Lukas Rauber Signed-off-by: Lukas Rauber Signed-off-by: Marcus Folkesson Reviewed-by: Andy Shevchenko Link: https://patch.msgid.link/20250428-mcp3911-fixes-v2-1-406e39330c3d@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/mcp3911.c | 39 ++++++++++++++++++++++++++++++++++----- 1 file changed, 34 insertions(+), 5 deletions(-) diff --git a/drivers/iio/adc/mcp3911.c b/drivers/iio/adc/mcp3911.c index be18635ae616..622d42550072 100644 --- a/drivers/iio/adc/mcp3911.c +++ b/drivers/iio/adc/mcp3911.c @@ -6,7 +6,7 @@ * Copyright (C) 2018 Kent Gustavsson */ #include -#include +#include #include #include #include @@ -79,6 +79,8 @@ #define MCP3910_CONFIG1_CLKEXT BIT(6) #define MCP3910_CONFIG1_VREFEXT BIT(7) +#define MCP3910_CHANNEL(ch) (MCP3911_REG_CHANNEL0 + (ch)) + #define MCP3910_REG_OFFCAL_CH0 0x0f #define MCP3910_OFFCAL(ch) (MCP3910_REG_OFFCAL_CH0 + (ch) * 6) @@ -110,6 +112,7 @@ struct mcp3911_chip_info { int (*get_offset)(struct mcp3911 *adc, int channel, int *val); int (*set_offset)(struct mcp3911 *adc, int channel, int val); int (*set_scale)(struct mcp3911 *adc, int channel, u32 val); + int (*get_raw)(struct mcp3911 *adc, int channel, int *val); }; struct mcp3911 { @@ -170,6 +173,18 @@ static int mcp3911_update(struct mcp3911 *adc, u8 reg, u32 mask, u32 val, u8 len return mcp3911_write(adc, reg, val, len); } +static int mcp3911_read_s24(struct mcp3911 *const adc, u8 const reg, s32 *const val) +{ + u32 uval; + int const ret = mcp3911_read(adc, reg, &uval, 3); + + if (ret) + return ret; + + *val = sign_extend32(uval, 23); + return ret; +} + static int mcp3910_enable_offset(struct mcp3911 *adc, bool enable) { unsigned int mask = MCP3910_CONFIG0_EN_OFFCAL; @@ -194,6 +209,11 @@ static int mcp3910_set_offset(struct mcp3911 *adc, int channel, int val) return adc->chip->enable_offset(adc, 1); } +static int mcp3910_get_raw(struct mcp3911 *adc, int channel, s32 *val) +{ + return mcp3911_read_s24(adc, MCP3910_CHANNEL(channel), val); +} + static int mcp3911_enable_offset(struct mcp3911 *adc, bool enable) { unsigned int mask = MCP3911_STATUSCOM_EN_OFFCAL; @@ -218,6 +238,11 @@ static int mcp3911_set_offset(struct mcp3911 *adc, int channel, int val) return adc->chip->enable_offset(adc, 1); } +static int mcp3911_get_raw(struct mcp3911 *adc, int channel, s32 *val) +{ + return mcp3911_read_s24(adc, MCP3911_CHANNEL(channel), val); +} + static int mcp3910_get_osr(struct mcp3911 *adc, u32 *val) { int ret; @@ -321,12 +346,9 @@ static int mcp3911_read_raw(struct iio_dev *indio_dev, guard(mutex)(&adc->lock); switch (mask) { case IIO_CHAN_INFO_RAW: - ret = mcp3911_read(adc, - MCP3911_CHANNEL(channel->channel), val, 3); + ret = adc->chip->get_raw(adc, channel->channel, val); if (ret) return ret; - - *val = sign_extend32(*val, 23); return IIO_VAL_INT; case IIO_CHAN_INFO_OFFSET: ret = adc->chip->get_offset(adc, channel->channel, val); @@ -799,6 +821,7 @@ static const struct mcp3911_chip_info mcp3911_chip_info[] = { .get_offset = mcp3910_get_offset, .set_offset = mcp3910_set_offset, .set_scale = mcp3910_set_scale, + .get_raw = mcp3910_get_raw, }, [MCP3911] = { .channels = mcp3911_channels, @@ -810,6 +833,7 @@ static const struct mcp3911_chip_info mcp3911_chip_info[] = { .get_offset = mcp3911_get_offset, .set_offset = mcp3911_set_offset, .set_scale = mcp3911_set_scale, + .get_raw = mcp3911_get_raw, }, [MCP3912] = { .channels = mcp3912_channels, @@ -821,6 +845,7 @@ static const struct mcp3911_chip_info mcp3911_chip_info[] = { .get_offset = mcp3910_get_offset, .set_offset = mcp3910_set_offset, .set_scale = mcp3910_set_scale, + .get_raw = mcp3910_get_raw, }, [MCP3913] = { .channels = mcp3913_channels, @@ -832,6 +857,7 @@ static const struct mcp3911_chip_info mcp3911_chip_info[] = { .get_offset = mcp3910_get_offset, .set_offset = mcp3910_set_offset, .set_scale = mcp3910_set_scale, + .get_raw = mcp3910_get_raw, }, [MCP3914] = { .channels = mcp3914_channels, @@ -843,6 +869,7 @@ static const struct mcp3911_chip_info mcp3911_chip_info[] = { .get_offset = mcp3910_get_offset, .set_offset = mcp3910_set_offset, .set_scale = mcp3910_set_scale, + .get_raw = mcp3910_get_raw, }, [MCP3918] = { .channels = mcp3918_channels, @@ -854,6 +881,7 @@ static const struct mcp3911_chip_info mcp3911_chip_info[] = { .get_offset = mcp3910_get_offset, .set_offset = mcp3910_set_offset, .set_scale = mcp3910_set_scale, + .get_raw = mcp3910_get_raw, }, [MCP3919] = { .channels = mcp3919_channels, @@ -865,6 +893,7 @@ static const struct mcp3911_chip_info mcp3911_chip_info[] = { .get_offset = mcp3910_get_offset, .set_offset = mcp3910_set_offset, .set_scale = mcp3910_set_scale, + .get_raw = mcp3910_get_raw, }, }; static const struct of_device_id mcp3911_dt_ids[] = { -- cgit v1.2.3 From 94264cc9abbbec29c261bcb94aaaaa32e1535595 Mon Sep 17 00:00:00 2001 From: Marcus Folkesson Date: Mon, 28 Apr 2025 08:54:12 +0200 Subject: dt-bindings: iio: adc: mcp3911: add reset-gpios The MCP391X family provides an active low reset signal that is still not described in the bindings. Add reset-gpios to the bindings and the example. Co-developed-by: Lukas Rauber Signed-off-by: Lukas Rauber Signed-off-by: Marcus Folkesson Acked-by: Conor Dooley Reviewed-by: Krzysztof Kozlowski Link: https://patch.msgid.link/20250428-mcp3911-fixes-v2-2-406e39330c3d@gmail.com Signed-off-by: Jonathan Cameron --- Documentation/devicetree/bindings/iio/adc/microchip,mcp3911.yaml | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/Documentation/devicetree/bindings/iio/adc/microchip,mcp3911.yaml b/Documentation/devicetree/bindings/iio/adc/microchip,mcp3911.yaml index 06951ec5f5da..3a69ec60edb9 100644 --- a/Documentation/devicetree/bindings/iio/adc/microchip,mcp3911.yaml +++ b/Documentation/devicetree/bindings/iio/adc/microchip,mcp3911.yaml @@ -32,6 +32,9 @@ properties: spi-max-frequency: maximum: 20000000 + reset-gpios: + maxItems: 1 + clocks: description: | Phandle and clock identifier for external sampling clock. @@ -71,6 +74,7 @@ unevaluatedProperties: false examples: - | + #include spi { #address-cells = <1>; #size-cells = <0>; @@ -80,6 +84,7 @@ examples: reg = <0>; interrupt-parent = <&gpio5>; interrupts = <15 2>; + reset-gpios = <&gpio1 10 GPIO_ACTIVE_LOW>; spi-max-frequency = <20000000>; microchip,device-addr = <0>; vref-supply = <&vref_reg>; -- cgit v1.2.3 From f45a27b990a14c30e4edea7f3a427b03785b22c3 Mon Sep 17 00:00:00 2001 From: Marcus Folkesson Date: Mon, 28 Apr 2025 08:54:13 +0200 Subject: iio: adc: mcp3911: add reset management Add support for optional HW reset. If specified, a reset will be asserted during driver probe. Co-developed-by: Lukas Rauber Signed-off-by: Lukas Rauber Signed-off-by: Marcus Folkesson Reviewed-by: Andy Shevchenko Link: https://patch.msgid.link/20250428-mcp3911-fixes-v2-3-406e39330c3d@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/mcp3911.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/drivers/iio/adc/mcp3911.c b/drivers/iio/adc/mcp3911.c index 622d42550072..a6f21791c685 100644 --- a/drivers/iio/adc/mcp3911.c +++ b/drivers/iio/adc/mcp3911.c @@ -10,7 +10,9 @@ #include #include #include +#include #include +#include #include #include #include @@ -706,6 +708,7 @@ static const struct iio_trigger_ops mcp3911_trigger_ops = { static int mcp3911_probe(struct spi_device *spi) { struct device *dev = &spi->dev; + struct gpio_desc *gpio_reset; struct iio_dev *indio_dev; struct mcp3911 *adc; bool external_vref; @@ -750,6 +753,22 @@ static int mcp3911_probe(struct spi_device *spi) } dev_dbg(dev, "use device address %i\n", adc->dev_addr); + gpio_reset = devm_gpiod_get_optional(&spi->dev, "reset", GPIOD_OUT_HIGH); + if (IS_ERR(gpio_reset)) + return dev_err_probe(dev, PTR_ERR(gpio_reset), + "Cannot get reset GPIO\n"); + + if (gpio_reset) { + gpiod_set_value_cansleep(gpio_reset, 0); + + /* + * Settling time after Hard Reset Mode (determined experimentally): + * 330 micro-seconds are too few; 470 micro-seconds are sufficient. + * Just in case, we add some safety factor... + */ + fsleep(600); + } + ret = adc->chip->config(adc, external_vref); if (ret) return ret; -- cgit v1.2.3 From ce45446e520c85db022f8bcd7f0334b042ff3571 Mon Sep 17 00:00:00 2001 From: Marcelo Schmitt Date: Tue, 15 Apr 2025 09:21:10 -0300 Subject: iio: adc: ad4000: Avoid potential double data word read Currently, SPI-Engine offload module always sends 32-bit data elements to DMA engine. Appropriately, when set for SPI offloading, the IIO driver uses 32 storagebits for IIO ADC channel buffer elements. However, setting SPI transfer length according to storagebits (32-bits in case of offload) can lead to unnecessarily long transfers for ADCs that are 16-bit or less precision. Adjust AD4000 single-shot read to run transfers of 2 bytes when that is enough to get all ADC data bits. Fixes: 59b51edf717b ("iio: adc: ad4000: Add support for SPI offload") Suggested-by: David Lechner Signed-off-by: Marcelo Schmitt Reviewed-by: David Lechner Link: https://patch.msgid.link/8f765cfd6e93fad4e755dd95d709b7bea2a388e2.1744718916.git.marcelo.schmitt@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad4000.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/adc/ad4000.c b/drivers/iio/adc/ad4000.c index 93ecaf401f27..5609a7845b6f 100644 --- a/drivers/iio/adc/ad4000.c +++ b/drivers/iio/adc/ad4000.c @@ -942,7 +942,7 @@ static int ad4000_prepare_3wire_mode_message(struct ad4000_state *st, xfers[0].cs_change_delay.unit = SPI_DELAY_UNIT_NSECS; xfers[1].rx_buf = &st->scan.data; - xfers[1].len = BITS_TO_BYTES(chan->scan_type.storagebits); + xfers[1].len = chan->scan_type.realbits > 16 ? 4 : 2; /* * If the device is set up for SPI offloading, IIO channel scan_type is -- cgit v1.2.3 From 157517b5e88d87721c90687538f643cceeb886f5 Mon Sep 17 00:00:00 2001 From: Matti Vaittinen Date: Mon, 28 Apr 2025 10:02:17 +0300 Subject: iio: ti-adc128s052: Drop variable vref According to Jonathan, variable reference voltages are very rare. It is unlikely it is needed, and supporting it makes the code a bit more complex. Simplify the driver and drop the variable vref support. Suggested-by: Jonathan Cameron Signed-off-by: Matti Vaittinen Reviewed-by: David Lechner Link: https://patch.msgid.link/59106e24332743a7f9eb0b13ad6a2f5595ab485a.1745823530.git.mazziesaccount@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ti-adc128s052.c | 31 +++++++++---------------------- 1 file changed, 9 insertions(+), 22 deletions(-) diff --git a/drivers/iio/adc/ti-adc128s052.c b/drivers/iio/adc/ti-adc128s052.c index d4721ad90f2c..1b46a8155803 100644 --- a/drivers/iio/adc/ti-adc128s052.c +++ b/drivers/iio/adc/ti-adc128s052.c @@ -29,13 +29,12 @@ struct adc128_configuration { struct adc128 { struct spi_device *spi; - struct regulator *reg; /* * Serialize the SPI 'write-channel + read data' accesses and protect * the shared buffer. */ struct mutex lock; - + int vref_mv; union { __be16 buffer16; u8 buffer[2]; @@ -81,11 +80,7 @@ static int adc128_read_raw(struct iio_dev *indio_dev, case IIO_CHAN_INFO_SCALE: - ret = regulator_get_voltage(adc->reg); - if (ret < 0) - return ret; - - *val = ret / 1000; + *val = adc->vref_mv; *val2 = 12; return IIO_VAL_FRACTIONAL_LOG2; @@ -155,11 +150,6 @@ static const struct iio_info adc128_info = { .read_raw = adc128_read_raw, }; -static void adc128_disable_regulator(void *reg) -{ - regulator_disable(reg); -} - static int adc128_probe(struct spi_device *spi) { const struct adc128_configuration *config; @@ -183,17 +173,14 @@ static int adc128_probe(struct spi_device *spi) indio_dev->channels = config->channels; indio_dev->num_channels = config->num_channels; - adc->reg = devm_regulator_get(&spi->dev, config->refname); - if (IS_ERR(adc->reg)) - return PTR_ERR(adc->reg); - - ret = regulator_enable(adc->reg); + ret = devm_regulator_get_enable_read_voltage(&spi->dev, + config->refname); if (ret < 0) - return ret; - ret = devm_add_action_or_reset(&spi->dev, adc128_disable_regulator, - adc->reg); - if (ret) - return ret; + return dev_err_probe(&spi->dev, ret, + "failed to read '%s' voltage", + config->refname); + + adc->vref_mv = ret / 1000; if (config->num_other_regulators) { ret = devm_regulator_bulk_get_enable(&spi->dev, -- cgit v1.2.3 From 3c5dfea39a245b2dad869db24e2830aa299b1cf2 Mon Sep 17 00:00:00 2001 From: Arthur-Prince Date: Wed, 30 Apr 2025 16:07:37 -0300 Subject: iio: adc: ti-ads1298: Kconfig: add kfifo dependency to fix module build MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add dependency to Kconfig’s ti-ads1298 because compiling it as a module failed with an undefined kfifo symbol. Fixes: 00ef7708fa60 ("iio: adc: ti-ads1298: Add driver") Signed-off-by: Arthur-Prince Co-developed-by: Mariana Valério Signed-off-by: Mariana Valério Link: https://patch.msgid.link/20250430191131.120831-1-r2.arthur.prince@gmail.com Cc: Signed-off-by: Jonathan Cameron --- drivers/iio/adc/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig index ad06cf556785..0fe6601e59ed 100644 --- a/drivers/iio/adc/Kconfig +++ b/drivers/iio/adc/Kconfig @@ -1562,6 +1562,7 @@ config TI_ADS1298 tristate "Texas Instruments ADS1298" depends on SPI select IIO_BUFFER + select IIO_KFIFO_BUF help If you say yes here you get support for Texas Instruments ADS1298 medical ADC chips -- cgit v1.2.3 From 02b70dfe2f61cc245906e78deea774a1842e6573 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Mon, 5 May 2025 14:20:28 -0500 Subject: iio: adc: ad4030: remove bits_per_word = 8 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Remove setting bits_per_word = 8 from the ad4030 driver. This is the default value for SPI transfers, so it is not necessary to explicitly set it. Signed-off-by: David Lechner Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250505-iio-remove-bits_per_word-8-v1-1-341f85fcfe11@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad4030.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/iio/adc/ad4030.c b/drivers/iio/adc/ad4030.c index 5aa26dc3a2ce..1bc2f9a22470 100644 --- a/drivers/iio/adc/ad4030.c +++ b/drivers/iio/adc/ad4030.c @@ -244,7 +244,6 @@ static int ad4030_enter_config_mode(struct ad4030_state *st) struct spi_transfer xfer = { .tx_buf = st->tx_data, - .bits_per_word = 8, .len = 1, .speed_hz = AD4030_SPI_MAX_REG_XFER_SPEED, }; @@ -260,7 +259,6 @@ static int ad4030_exit_config_mode(struct ad4030_state *st) struct spi_transfer xfer = { .tx_buf = st->tx_data, - .bits_per_word = 8, .len = 3, .speed_hz = AD4030_SPI_MAX_REG_XFER_SPEED, }; @@ -276,7 +274,6 @@ static int ad4030_spi_read(void *context, const void *reg, size_t reg_size, struct spi_transfer xfer = { .tx_buf = st->tx_data, .rx_buf = st->rx_data.raw, - .bits_per_word = 8, .len = reg_size + val_size, .speed_hz = AD4030_SPI_MAX_REG_XFER_SPEED, }; @@ -311,7 +308,6 @@ static int ad4030_spi_write(void *context, const void *data, size_t count) ((u8 *)data)[2] == 0x81; struct spi_transfer xfer = { .tx_buf = st->tx_data, - .bits_per_word = 8, .len = count, .speed_hz = AD4030_SPI_MAX_REG_XFER_SPEED, }; -- cgit v1.2.3 From 0115e17e9fded16017ffde8207252fc0f21ddf8d Mon Sep 17 00:00:00 2001 From: David Lechner Date: Mon, 5 May 2025 14:20:29 -0500 Subject: iio: adc: ti-tsc2046: remove bits_per_word = 8 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Remove setting bits_per_word = 8 from the ti-tsc2046 driver. This is the default value for SPI transfers, so it is not necessary to explicitly set it. Signed-off-by: David Lechner Reviewed-by: Oleksij Rempel Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250505-iio-remove-bits_per_word-8-v1-2-341f85fcfe11@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ti-tsc2046.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/iio/adc/ti-tsc2046.c b/drivers/iio/adc/ti-tsc2046.c index 84a9a5e66526..c2d2aada6772 100644 --- a/drivers/iio/adc/ti-tsc2046.c +++ b/drivers/iio/adc/ti-tsc2046.c @@ -761,7 +761,6 @@ static int tsc2046_adc_probe(struct spi_device *spi) if (!dcfg) return -EINVAL; - spi->bits_per_word = 8; spi->mode &= ~SPI_MODE_X_MASK; spi->mode |= SPI_MODE_0; ret = spi_setup(spi); -- cgit v1.2.3 From 2fa33f8710f763108fab3cc04bed31c0b3aba232 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Mon, 5 May 2025 14:20:30 -0500 Subject: iio: chemical: bme680_spi: remove bits_per_word = 8 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Remove setting bits_per_word = 8 from the bme680 driver. This is the default value for SPI transfers, so it is not necessary to explicitly set it. Since no other SPI settings are changed, we can also remove the call to spi_setup(). Signed-off-by: David Lechner Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250505-iio-remove-bits_per_word-8-v1-3-341f85fcfe11@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/chemical/bme680_spi.c | 8 -------- 1 file changed, 8 deletions(-) diff --git a/drivers/iio/chemical/bme680_spi.c b/drivers/iio/chemical/bme680_spi.c index ced5af23846a..aa97645ba539 100644 --- a/drivers/iio/chemical/bme680_spi.c +++ b/drivers/iio/chemical/bme680_spi.c @@ -112,14 +112,6 @@ static int bme680_spi_probe(struct spi_device *spi) const struct spi_device_id *id = spi_get_device_id(spi); struct bme680_spi_bus_context *bus_context; struct regmap *regmap; - int ret; - - spi->bits_per_word = 8; - ret = spi_setup(spi); - if (ret < 0) { - dev_err(&spi->dev, "spi_setup failed!\n"); - return ret; - } bus_context = devm_kzalloc(&spi->dev, sizeof(*bus_context), GFP_KERNEL); if (!bus_context) -- cgit v1.2.3 From f92bb6b71b042af8a1dc5aa897a20e0ca23392f1 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Mon, 5 May 2025 14:20:31 -0500 Subject: iio: dac: ad5761: remove bits_per_word = 8 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Remove setting bits_per_word = 8 from the ad5761 driver. This is the default value for SPI transfers, so it is not necessary to explicitly set it. Signed-off-by: David Lechner Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250505-iio-remove-bits_per_word-8-v1-4-341f85fcfe11@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/dac/ad5761.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/iio/dac/ad5761.c b/drivers/iio/dac/ad5761.c index 124571ba35d1..b5d20f04f070 100644 --- a/drivers/iio/dac/ad5761.c +++ b/drivers/iio/dac/ad5761.c @@ -137,13 +137,11 @@ static int _ad5761_spi_read(struct ad5761_state *st, u8 addr, u16 *val) struct spi_transfer xfers[] = { { .tx_buf = &st->data[0].d8[1], - .bits_per_word = 8, .len = 3, .cs_change = true, }, { .tx_buf = &st->data[1].d8[1], .rx_buf = &st->data[2].d8[1], - .bits_per_word = 8, .len = 3, }, }; -- cgit v1.2.3 From 57e382e67ca3b372cef43a1bedc6fda54d9d3c6f Mon Sep 17 00:00:00 2001 From: David Lechner Date: Mon, 5 May 2025 14:20:32 -0500 Subject: iio: dac: ad5766: remove bits_per_word = 8 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Remove setting bits_per_word = 8 from the ad5766 driver. This is the default value for SPI transfers, so it is not necessary to explicitly set it. Signed-off-by: David Lechner Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250505-iio-remove-bits_per_word-8-v1-5-341f85fcfe11@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/dac/ad5766.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/iio/dac/ad5766.c b/drivers/iio/dac/ad5766.c index dc766c8fd370..f6a0a0d84fef 100644 --- a/drivers/iio/dac/ad5766.c +++ b/drivers/iio/dac/ad5766.c @@ -148,13 +148,11 @@ static int __ad5766_spi_read(struct ad5766_state *st, u8 dac, int *val) struct spi_transfer xfers[] = { { .tx_buf = &st->data[0].d32, - .bits_per_word = 8, .len = 3, .cs_change = 1, }, { .tx_buf = &st->data[1].d32, .rx_buf = &st->data[2].d32, - .bits_per_word = 8, .len = 3, }, }; -- cgit v1.2.3 From 3cdd2953b36732b3ad3e72f35a59c6a5fd7713e8 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Mon, 5 May 2025 14:20:33 -0500 Subject: iio: dac: ad5791: remove bits_per_word = 8 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Remove setting bits_per_word = 8 from the ad5791 driver. This is the default value for SPI transfers, so it is not necessary to explicitly set it. Signed-off-by: David Lechner Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250505-iio-remove-bits_per_word-8-v1-6-341f85fcfe11@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/dac/ad5791.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/iio/dac/ad5791.c b/drivers/iio/dac/ad5791.c index 8214e524afdb..41582f2b90fb 100644 --- a/drivers/iio/dac/ad5791.c +++ b/drivers/iio/dac/ad5791.c @@ -138,13 +138,11 @@ static int ad5791_spi_read(struct ad5791_state *st, u8 addr, u32 *val) struct spi_transfer xfers[] = { { .tx_buf = &st->data[0].d8[1], - .bits_per_word = 8, .len = 3, .cs_change = 1, }, { .tx_buf = &st->data[1].d8[1], .rx_buf = &st->data[2].d8[1], - .bits_per_word = 8, .len = 3, }, }; -- cgit v1.2.3 From bfc50ab35a2256d78ad60aa77e83a03aa207639e Mon Sep 17 00:00:00 2001 From: David Lechner Date: Mon, 5 May 2025 14:20:34 -0500 Subject: iio: dac: ltc2688: remove bits_per_word = 8 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Remove setting bits_per_word = 8 from the ltc2688 driver. This is the default value for SPI transfers, so it is not necessary to explicitly set it. Signed-off-by: David Lechner Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250505-iio-remove-bits_per_word-8-v1-7-341f85fcfe11@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/dac/ltc2688.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/iio/dac/ltc2688.c b/drivers/iio/dac/ltc2688.c index 757b4831dc3e..1f24f07d1ad2 100644 --- a/drivers/iio/dac/ltc2688.c +++ b/drivers/iio/dac/ltc2688.c @@ -104,13 +104,11 @@ static int ltc2688_spi_read(void *context, const void *reg, size_t reg_size, struct spi_transfer xfers[] = { { .tx_buf = st->tx_data, - .bits_per_word = 8, .len = reg_size + val_size, .cs_change = 1, }, { .tx_buf = st->tx_data + 3, .rx_buf = st->rx_data, - .bits_per_word = 8, .len = reg_size + val_size, }, }; -- cgit v1.2.3 From 3de7492148c7c43c3686cbae476ea3e5f22120c0 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Mon, 5 May 2025 14:20:35 -0500 Subject: iio: gyro: adxrs450: remove bits_per_word = 8 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Remove setting bits_per_word = 8 from the adxrs450 driver. This is the default value for SPI transfers, so it is not necessary to explicitly set it. Signed-off-by: David Lechner Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250505-iio-remove-bits_per_word-8-v1-8-341f85fcfe11@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/gyro/adxrs450.c | 5 ----- 1 file changed, 5 deletions(-) diff --git a/drivers/iio/gyro/adxrs450.c b/drivers/iio/gyro/adxrs450.c index 5dadb88a4d92..a1d8d3cb301b 100644 --- a/drivers/iio/gyro/adxrs450.c +++ b/drivers/iio/gyro/adxrs450.c @@ -95,12 +95,10 @@ static int adxrs450_spi_read_reg_16(struct iio_dev *indio_dev, struct spi_transfer xfers[] = { { .tx_buf = &st->tx, - .bits_per_word = 8, .len = sizeof(st->tx), .cs_change = 1, }, { .rx_buf = &st->rx, - .bits_per_word = 8, .len = sizeof(st->rx), }, }; @@ -169,12 +167,10 @@ static int adxrs450_spi_sensor_data(struct iio_dev *indio_dev, s16 *val) struct spi_transfer xfers[] = { { .tx_buf = &st->tx, - .bits_per_word = 8, .len = sizeof(st->tx), .cs_change = 1, }, { .rx_buf = &st->rx, - .bits_per_word = 8, .len = sizeof(st->rx), }, }; @@ -209,7 +205,6 @@ static int adxrs450_spi_initial(struct adxrs450_state *st, struct spi_transfer xfers = { .tx_buf = &st->tx, .rx_buf = &st->rx, - .bits_per_word = 8, .len = sizeof(st->tx), }; -- cgit v1.2.3 From 6a1ebdb8a352bfdd53e726a15827a5d0485bad0f Mon Sep 17 00:00:00 2001 From: David Lechner Date: Mon, 5 May 2025 14:20:36 -0500 Subject: iio: imu: adis: remove bits_per_word = 8 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Remove setting bits_per_word = 8 from the adis driver. This is the default value for SPI transfers, so it is not necessary to explicitly set it. Signed-off-by: David Lechner Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250505-iio-remove-bits_per_word-8-v1-9-341f85fcfe11@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/imu/adis.c | 9 --------- drivers/iio/imu/adis_buffer.c | 3 --- 2 files changed, 12 deletions(-) diff --git a/drivers/iio/imu/adis.c b/drivers/iio/imu/adis.c index 0ea072a4c966..d160147cce0b 100644 --- a/drivers/iio/imu/adis.c +++ b/drivers/iio/imu/adis.c @@ -39,34 +39,29 @@ int __adis_write_reg(struct adis *adis, unsigned int reg, unsigned int value, struct spi_transfer xfers[] = { { .tx_buf = adis->tx, - .bits_per_word = 8, .len = 2, .cs_change = 1, .delay.value = adis->data->write_delay, .delay.unit = SPI_DELAY_UNIT_USECS, }, { .tx_buf = adis->tx + 2, - .bits_per_word = 8, .len = 2, .cs_change = 1, .delay.value = adis->data->write_delay, .delay.unit = SPI_DELAY_UNIT_USECS, }, { .tx_buf = adis->tx + 4, - .bits_per_word = 8, .len = 2, .cs_change = 1, .delay.value = adis->data->write_delay, .delay.unit = SPI_DELAY_UNIT_USECS, }, { .tx_buf = adis->tx + 6, - .bits_per_word = 8, .len = 2, .delay.value = adis->data->write_delay, .delay.unit = SPI_DELAY_UNIT_USECS, }, { .tx_buf = adis->tx + 8, - .bits_per_word = 8, .len = 2, .delay.value = adis->data->write_delay, .delay.unit = SPI_DELAY_UNIT_USECS, @@ -133,14 +128,12 @@ int __adis_read_reg(struct adis *adis, unsigned int reg, unsigned int *val, struct spi_transfer xfers[] = { { .tx_buf = adis->tx, - .bits_per_word = 8, .len = 2, .cs_change = 1, .delay.value = adis->data->write_delay, .delay.unit = SPI_DELAY_UNIT_USECS, }, { .tx_buf = adis->tx + 2, - .bits_per_word = 8, .len = 2, .cs_change = 1, .delay.value = adis->data->read_delay, @@ -148,14 +141,12 @@ int __adis_read_reg(struct adis *adis, unsigned int reg, unsigned int *val, }, { .tx_buf = adis->tx + 4, .rx_buf = adis->rx, - .bits_per_word = 8, .len = 2, .cs_change = 1, .delay.value = adis->data->read_delay, .delay.unit = SPI_DELAY_UNIT_USECS, }, { .rx_buf = adis->rx + 2, - .bits_per_word = 8, .len = 2, .delay.value = adis->data->read_delay, .delay.unit = SPI_DELAY_UNIT_USECS, diff --git a/drivers/iio/imu/adis_buffer.c b/drivers/iio/imu/adis_buffer.c index fdfc0538734c..cd3db2388164 100644 --- a/drivers/iio/imu/adis_buffer.c +++ b/drivers/iio/imu/adis_buffer.c @@ -49,12 +49,10 @@ static int adis_update_scan_mode_burst(struct iio_dev *indio_dev, tx[1] = 0; adis->xfer[0].tx_buf = tx; - adis->xfer[0].bits_per_word = 8; adis->xfer[0].len = 2; if (adis->data->burst_max_speed_hz) adis->xfer[0].speed_hz = adis->data->burst_max_speed_hz; adis->xfer[1].rx_buf = adis->buffer; - adis->xfer[1].bits_per_word = 8; adis->xfer[1].len = burst_length; if (adis->data->burst_max_speed_hz) adis->xfer[1].speed_hz = adis->data->burst_max_speed_hz; @@ -100,7 +98,6 @@ int adis_update_scan_mode(struct iio_dev *indio_dev, spi_message_init(&adis->msg); for (j = 0; j <= scan_count; j++) { - adis->xfer[j].bits_per_word = 8; if (j != scan_count) adis->xfer[j].cs_change = 1; adis->xfer[j].len = 2; -- cgit v1.2.3 From c48919febc15b7af18be38ba47a43594aa3ccf8a Mon Sep 17 00:00:00 2001 From: David Lechner Date: Mon, 5 May 2025 14:20:37 -0500 Subject: iio: magnetometer: hmc5843_spi: remove bits_per_word = 8 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Remove setting bits_per_word = 8 from the hmc5843 driver. This is the default value for SPI transfers, so it is not necessary to explicitly set it. Signed-off-by: David Lechner Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250505-iio-remove-bits_per_word-8-v1-10-341f85fcfe11@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/magnetometer/hmc5843_spi.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/iio/magnetometer/hmc5843_spi.c b/drivers/iio/magnetometer/hmc5843_spi.c index b7fde331069d..6a55c1559b0d 100644 --- a/drivers/iio/magnetometer/hmc5843_spi.c +++ b/drivers/iio/magnetometer/hmc5843_spi.c @@ -60,7 +60,6 @@ static int hmc5843_spi_probe(struct spi_device *spi) spi->mode = SPI_MODE_3; spi->max_speed_hz = 8000000; - spi->bits_per_word = 8; ret = spi_setup(spi); if (ret) return ret; -- cgit v1.2.3 From 3108b5e0bc4f15d48bb43224e6ecc9b7171f26ab Mon Sep 17 00:00:00 2001 From: David Lechner Date: Mon, 5 May 2025 14:20:38 -0500 Subject: iio: magnetometer: rm3100-spi: remove bits_per_word = 8 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Remove setting bits_per_word = 8 from the rm3100 driver. This is the default value for SPI transfers, so it is not necessary to explicitly set it. Signed-off-by: David Lechner Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250505-iio-remove-bits_per_word-8-v1-11-341f85fcfe11@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/magnetometer/rm3100-spi.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/iio/magnetometer/rm3100-spi.c b/drivers/iio/magnetometer/rm3100-spi.c index dd6d48043740..2f60a41c07f7 100644 --- a/drivers/iio/magnetometer/rm3100-spi.c +++ b/drivers/iio/magnetometer/rm3100-spi.c @@ -32,7 +32,6 @@ static int rm3100_probe(struct spi_device *spi) spi->mode = SPI_MODE_0; /* Data rates cannot exceed 1Mbits. */ spi->max_speed_hz = 1000000; - spi->bits_per_word = 8; ret = spi_setup(spi); if (ret) return ret; -- cgit v1.2.3 From 10918e71ac930c17b6ee9b26f3351c4701c839e0 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Mon, 5 May 2025 14:20:39 -0500 Subject: iio: pressure: bmp280-spi: remove bits_per_word = 8 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Remove setting bits_per_word = 8 from the bmp280 driver. This is the default value for SPI transfers, so it is not necessary to explicitly set it. Since no other SPI settings are changed, we can also remove the call to spi_setup(). Signed-off-by: David Lechner Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250505-iio-remove-bits_per_word-8-v1-12-341f85fcfe11@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/pressure/bmp280-spi.c | 8 -------- 1 file changed, 8 deletions(-) diff --git a/drivers/iio/pressure/bmp280-spi.c b/drivers/iio/pressure/bmp280-spi.c index c4fded3398da..3b90384f17d7 100644 --- a/drivers/iio/pressure/bmp280-spi.c +++ b/drivers/iio/pressure/bmp280-spi.c @@ -81,14 +81,6 @@ static int bmp280_spi_probe(struct spi_device *spi) const struct bmp280_chip_info *chip_info; struct regmap_bus const *bmp_regmap_bus; struct regmap *regmap; - int ret; - - spi->bits_per_word = 8; - ret = spi_setup(spi); - if (ret < 0) { - dev_err(&spi->dev, "spi_setup failed!\n"); - return ret; - } chip_info = spi_get_device_match_data(spi); -- cgit v1.2.3 From 5b6bfe1354be25e9ebf8e48cdb721294d51a8c0f Mon Sep 17 00:00:00 2001 From: David Lechner Date: Mon, 5 May 2025 14:20:40 -0500 Subject: iio: pressure: ms5611_spi: remove bits_per_word = 8 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Remove setting bits_per_word = 8 from the ms5611 driver. This is the default value for SPI transfers, so it is not necessary to explicitly set it. Signed-off-by: David Lechner Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250505-iio-remove-bits_per_word-8-v1-13-341f85fcfe11@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/pressure/ms5611_spi.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/iio/pressure/ms5611_spi.c b/drivers/iio/pressure/ms5611_spi.c index b5a91e885793..25c7bd2d8fdf 100644 --- a/drivers/iio/pressure/ms5611_spi.c +++ b/drivers/iio/pressure/ms5611_spi.c @@ -92,7 +92,6 @@ static int ms5611_spi_probe(struct spi_device *spi) spi->mode = SPI_MODE_0; spi->max_speed_hz = min(spi->max_speed_hz, 20000000U); - spi->bits_per_word = 8; ret = spi_setup(spi); if (ret < 0) return ret; -- cgit v1.2.3 From 666eae6c6dab46cb5023170651286c47a693f661 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Mon, 5 May 2025 14:20:41 -0500 Subject: iio: pressure: zpa2326_spi: remove bits_per_word = 8 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Remove setting bits_per_word = 8 from the zpa2326 driver. This is the default value for SPI transfers, so it is not necessary to explicitly set it. Signed-off-by: David Lechner Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250505-iio-remove-bits_per_word-8-v1-14-341f85fcfe11@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/pressure/zpa2326_spi.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/iio/pressure/zpa2326_spi.c b/drivers/iio/pressure/zpa2326_spi.c index 8a695b065a5f..af756e2b0f31 100644 --- a/drivers/iio/pressure/zpa2326_spi.c +++ b/drivers/iio/pressure/zpa2326_spi.c @@ -47,7 +47,6 @@ static int zpa2326_probe_spi(struct spi_device *spi) */ spi->mode = SPI_MODE_3; spi->max_speed_hz = min(spi->max_speed_hz, 1000000U); - spi->bits_per_word = 8; err = spi_setup(spi); if (err < 0) return err; -- cgit v1.2.3 From fa19c303254bae5b8d105ecdc7d714d092f2adda Mon Sep 17 00:00:00 2001 From: David Lechner Date: Wed, 7 May 2025 15:42:40 -0500 Subject: iio: make IIO_DMA_MINALIGN minimum of 8 bytes MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add a condition to ensure that IIO_DMA_MINALIGN is at least 8 bytes. On some 32-bit architectures, IIO_DMA_MINALIGN is 4. In many cases, drivers are using this alignment for buffers that include a 64-bit timestamp that is used with iio_push_to_buffers_with_ts(), which expects the timestamp to be aligned to 8 bytes. To handle this, we can just make IIO_DMA_MINALIGN at least 8 bytes. Reviewed-by: Nuno Sá Signed-off-by: David Lechner Link: https://patch.msgid.link/20250507-iio-introduce-iio_declare_buffer_with_ts-v6-1-4aee1b9f1b89@baylibre.com Signed-off-by: Jonathan Cameron --- include/linux/iio/iio.h | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h index 638cf2420fbd..a574f22398e4 100644 --- a/include/linux/iio/iio.h +++ b/include/linux/iio/iio.h @@ -10,6 +10,7 @@ #include #include #include +#include #include #include /* IIO TODO LIST */ @@ -775,8 +776,14 @@ static inline void *iio_device_get_drvdata(const struct iio_dev *indio_dev) * to in turn include IIO_DMA_MINALIGN'd elements such as buffers which * must not share cachelines with the rest of the structure, thus making * them safe for use with non-coherent DMA. + * + * A number of drivers also use this on buffers that include a 64-bit timestamp + * that is used with iio_push_to_buffer_with_ts(). Therefore, in the case where + * DMA alignment is not sufficient for proper timestamp alignment, we align to + * 8 bytes instead. */ -#define IIO_DMA_MINALIGN ARCH_DMA_MINALIGN +#define IIO_DMA_MINALIGN MAX(ARCH_DMA_MINALIGN, sizeof(s64)) + struct iio_dev *iio_device_alloc(struct device *parent, int sizeof_priv); /* The information at the returned address is guaranteed to be cacheline aligned */ -- cgit v1.2.3 From 63fc53526d3090b27bd06bb43b92e8bc85f46fb1 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Wed, 7 May 2025 15:42:41 -0500 Subject: iio: introduce IIO_DECLARE_BUFFER_WITH_TS macros MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add new macros to help with the common case of declaring a buffer that is safe to use with iio_push_to_buffers_with_ts(). This is not trivial to do correctly because of the alignment requirements of the timestamp. This will make it easier for both authors and reviewers. To avoid double __align() attributes in cases where we also need DMA alignment, add a 2nd variant IIO_DECLARE_DMA_BUFFER_WITH_TS(). Reviewed-by: Nuno Sá Signed-off-by: David Lechner Link: https://patch.msgid.link/20250507-iio-introduce-iio_declare_buffer_with_ts-v6-2-4aee1b9f1b89@baylibre.com Signed-off-by: Jonathan Cameron --- include/linux/iio/iio.h | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h index a574f22398e4..d11668f14a3e 100644 --- a/include/linux/iio/iio.h +++ b/include/linux/iio/iio.h @@ -7,6 +7,7 @@ #ifndef _INDUSTRIAL_IO_H_ #define _INDUSTRIAL_IO_H_ +#include #include #include #include @@ -784,6 +785,37 @@ static inline void *iio_device_get_drvdata(const struct iio_dev *indio_dev) */ #define IIO_DMA_MINALIGN MAX(ARCH_DMA_MINALIGN, sizeof(s64)) +#define __IIO_DECLARE_BUFFER_WITH_TS(type, name, count) \ + type name[ALIGN((count), sizeof(s64) / sizeof(type)) + sizeof(s64) / sizeof(type)] + +/** + * IIO_DECLARE_BUFFER_WITH_TS() - Declare a buffer with timestamp + * @type: element type of the buffer + * @name: identifier name of the buffer + * @count: number of elements in the buffer + * + * Declares a buffer that is safe to use with iio_push_to_buffer_with_ts(). In + * addition to allocating enough space for @count elements of @type, it also + * allocates space for a s64 timestamp at the end of the buffer and ensures + * proper alignment of the timestamp. + */ +#define IIO_DECLARE_BUFFER_WITH_TS(type, name, count) \ + __IIO_DECLARE_BUFFER_WITH_TS(type, name, count) __aligned(sizeof(s64)) + +/** + * IIO_DECLARE_DMA_BUFFER_WITH_TS() - Declare a DMA-aligned buffer with timestamp + * @type: element type of the buffer + * @name: identifier name of the buffer + * @count: number of elements in the buffer + * + * Same as IIO_DECLARE_BUFFER_WITH_TS(), but is uses __aligned(IIO_DMA_MINALIGN) + * to ensure that the buffer doesn't share cachelines with anything that comes + * before it in a struct. This should not be used for stack-allocated buffers + * as stack memory cannot generally be used for DMA. + */ +#define IIO_DECLARE_DMA_BUFFER_WITH_TS(type, name, count) \ + __IIO_DECLARE_BUFFER_WITH_TS(type, name, count) __aligned(IIO_DMA_MINALIGN) + struct iio_dev *iio_device_alloc(struct device *parent, int sizeof_priv); /* The information at the returned address is guaranteed to be cacheline aligned */ -- cgit v1.2.3 From 51924ff5ab16e05e0b4fd12f9b2cf6c122f36e89 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Wed, 7 May 2025 15:42:42 -0500 Subject: iio: adc: ad4695: use IIO_DECLARE_DMA_BUFFER_WITH_TS MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Use IIO_DECLARE_DMA_BUFFER_WITH_TS() to declare the buffer that gets used with iio_push_to_buffers_with_ts(). This makes the code a bit easier to read and understand. Reviewed-by: Trevor Gamblin Reviewed-by: Nuno Sá Signed-off-by: David Lechner Link: https://patch.msgid.link/20250507-iio-introduce-iio_declare_buffer_with_ts-v6-3-4aee1b9f1b89@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad4695.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/iio/adc/ad4695.c b/drivers/iio/adc/ad4695.c index 0c633d43e480..992abf6c63b5 100644 --- a/drivers/iio/adc/ad4695.c +++ b/drivers/iio/adc/ad4695.c @@ -160,8 +160,7 @@ struct ad4695_state { struct spi_transfer buf_read_xfer[AD4695_MAX_CHANNELS * 2 + 3]; struct spi_message buf_read_msg; /* Raw conversion data received. */ - u16 buf[ALIGN((AD4695_MAX_CHANNELS + 1) * sizeof(u16), - sizeof(s64)) + sizeof(s64)] __aligned(IIO_DMA_MINALIGN); + IIO_DECLARE_DMA_BUFFER_WITH_TS(u16, buf, AD4695_MAX_CHANNELS + 1); u16 raw_data; /* Commands to send for single conversion. */ u16 cnv_cmd; -- cgit v1.2.3 From 76a67e394d11e63d427dde89831166f29c335d68 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Wed, 7 May 2025 15:42:43 -0500 Subject: iio: adc: ad4695: rename AD4695_MAX_VIN_CHANNELS MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Rename AD4695_MAX_CHANNELS to AD4695_MAX_VIN_CHANNELS. It has been a point of confusion that this macro is only the voltage input channels and not all channels. Reviewed-by: Trevor Gamblin Reviewed-by: Nuno Sá Signed-off-by: David Lechner Link: https://patch.msgid.link/20250507-iio-introduce-iio_declare_buffer_with_ts-v6-4-4aee1b9f1b89@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad4695.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/iio/adc/ad4695.c b/drivers/iio/adc/ad4695.c index 992abf6c63b5..cda419638d9a 100644 --- a/drivers/iio/adc/ad4695.c +++ b/drivers/iio/adc/ad4695.c @@ -105,7 +105,7 @@ #define AD4695_REG_ACCESS_SCLK_HZ (10 * MEGA) /* Max number of voltage input channels. */ -#define AD4695_MAX_CHANNELS 16 +#define AD4695_MAX_VIN_CHANNELS 16 enum ad4695_in_pair { AD4695_IN_PAIR_REFGND, @@ -143,8 +143,8 @@ struct ad4695_state { /* offload also requires separate gpio to manually control CNV */ struct gpio_desc *cnv_gpio; /* voltages channels plus temperature and timestamp */ - struct iio_chan_spec iio_chan[AD4695_MAX_CHANNELS + 2]; - struct ad4695_channel_config channels_cfg[AD4695_MAX_CHANNELS]; + struct iio_chan_spec iio_chan[AD4695_MAX_VIN_CHANNELS + 2]; + struct ad4695_channel_config channels_cfg[AD4695_MAX_VIN_CHANNELS]; const struct ad4695_chip_info *chip_info; int sample_freq_range[3]; /* Reference voltage. */ @@ -157,10 +157,10 @@ struct ad4695_state { * to control CS and add a delay between the last SCLK and next * CNV rising edges. */ - struct spi_transfer buf_read_xfer[AD4695_MAX_CHANNELS * 2 + 3]; + struct spi_transfer buf_read_xfer[AD4695_MAX_VIN_CHANNELS * 2 + 3]; struct spi_message buf_read_msg; /* Raw conversion data received. */ - IIO_DECLARE_DMA_BUFFER_WITH_TS(u16, buf, AD4695_MAX_CHANNELS + 1); + IIO_DECLARE_DMA_BUFFER_WITH_TS(u16, buf, AD4695_MAX_VIN_CHANNELS + 1); u16 raw_data; /* Commands to send for single conversion. */ u16 cnv_cmd; -- cgit v1.2.3 From 6d06978f918db6c2710bfc6138fdd6131dc939c7 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Wed, 7 May 2025 15:42:44 -0500 Subject: iio: adc: ad7380: use IIO_DECLARE_DMA_BUFFER_WITH_TS MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Use IIO_DECLARE_DMA_BUFFER_WITH_TS() to declare the buffer that gets used with iio_push_to_buffers_with_ts(). This makes the code a bit easier to read and understand. Reviewed-by: Nuno Sá Signed-off-by: David Lechner Link: https://patch.msgid.link/20250507-iio-introduce-iio_declare_buffer_with_ts-v6-5-4aee1b9f1b89@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7380.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/iio/adc/ad7380.c b/drivers/iio/adc/ad7380.c index f93e6c67766a..ed5e43c8c84c 100644 --- a/drivers/iio/adc/ad7380.c +++ b/drivers/iio/adc/ad7380.c @@ -909,8 +909,7 @@ struct ad7380_state { * Make the buffer large enough for MAX_NUM_CHANNELS 32-bit samples and * one 64-bit aligned 64-bit timestamp. */ - u8 scan_data[ALIGN(MAX_NUM_CHANNELS * sizeof(u32), sizeof(s64)) - + sizeof(s64)] __aligned(IIO_DMA_MINALIGN); + IIO_DECLARE_DMA_BUFFER_WITH_TS(u8, scan_data, MAX_NUM_CHANNELS * sizeof(u32)); /* buffers for reading/writing registers */ u16 tx; u16 rx; -- cgit v1.2.3 From edeb67fbbf4b59a025a27891b92a9fc07e77d2f2 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Wed, 7 May 2025 15:42:45 -0500 Subject: iio: accel: sca3300: use IIO_DECLARE_BUFFER_WITH_TS MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Use IIO_DECLARE_BUFFER_WITH_TS() to declare the buffer that gets used with iio_push_to_buffers_with_ts(). This makes the code a bit easier to read and understand. Reviewed-by: Nuno Sá Signed-off-by: David Lechner Link: https://patch.msgid.link/20250507-iio-introduce-iio_declare_buffer_with_ts-v6-6-4aee1b9f1b89@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/accel/sca3300.c | 18 ++---------------- 1 file changed, 2 insertions(+), 16 deletions(-) diff --git a/drivers/iio/accel/sca3300.c b/drivers/iio/accel/sca3300.c index 1132bbaba75b..67416a406e2f 100644 --- a/drivers/iio/accel/sca3300.c +++ b/drivers/iio/accel/sca3300.c @@ -58,15 +58,6 @@ enum sca3300_scan_indexes { SCA3300_SCAN_MAX }; -/* - * Buffer size max case: - * Three accel channels, two bytes per channel. - * Temperature channel, two bytes. - * Three incli channels, two bytes per channel. - * Timestamp channel, eight bytes. - */ -#define SCA3300_MAX_BUFFER_SIZE (ALIGN(sizeof(s16) * SCA3300_SCAN_MAX, sizeof(s64)) + sizeof(s64)) - #define SCA3300_ACCEL_CHANNEL(index, reg, axis) { \ .type = IIO_ACCEL, \ .address = reg, \ @@ -193,9 +184,6 @@ struct sca3300_chip_info { * @spi: SPI device structure * @lock: Data buffer lock * @chip: Sensor chip specific information - * @buffer: Triggered buffer: - * -SCA3300: 4 channel 16-bit data + 64-bit timestamp - * -SCL3300: 7 channel 16-bit data + 64-bit timestamp * @txbuf: Transmit buffer * @rxbuf: Receive buffer */ @@ -203,7 +191,6 @@ struct sca3300_data { struct spi_device *spi; struct mutex lock; const struct sca3300_chip_info *chip; - u8 buffer[SCA3300_MAX_BUFFER_SIZE] __aligned(sizeof(s64)); u8 txbuf[4] __aligned(IIO_DMA_MINALIGN); u8 rxbuf[4]; }; @@ -492,7 +479,7 @@ static irqreturn_t sca3300_trigger_handler(int irq, void *p) struct iio_dev *indio_dev = pf->indio_dev; struct sca3300_data *data = iio_priv(indio_dev); int bit, ret, val, i = 0; - s16 *channels = (s16 *)data->buffer; + IIO_DECLARE_BUFFER_WITH_TS(s16, channels, SCA3300_SCAN_MAX); iio_for_each_active_channel(indio_dev, bit) { ret = sca3300_read_reg(data, indio_dev->channels[bit].address, &val); @@ -505,8 +492,7 @@ static irqreturn_t sca3300_trigger_handler(int irq, void *p) channels[i++] = val; } - iio_push_to_buffers_with_ts(indio_dev, data->buffer, - sizeof(data->buffer), + iio_push_to_buffers_with_ts(indio_dev, channels, sizeof(channels), iio_get_time_ns(indio_dev)); out: iio_trigger_notify_done(indio_dev->trig); -- cgit v1.2.3 From 04c129077689ee8f01bf3443377bd95d96871339 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Wed, 7 May 2025 15:42:46 -0500 Subject: iio: adc: at91-sama5d2: use IIO_DECLARE_BUFFER_WITH_TS MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Use IIO_DECLARE_BUFFER_WITH_TS() to declare the buffer that gets used with iio_push_to_buffers_with_ts(). This makes the code a bit easier to read and understand. Reviewed-by: Nuno Sá Signed-off-by: David Lechner Link: https://patch.msgid.link/20250507-iio-introduce-iio_declare_buffer_with_ts-v6-7-4aee1b9f1b89@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/at91-sama5d2_adc.c | 13 ++----------- 1 file changed, 2 insertions(+), 11 deletions(-) diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c index 414610afcb2c..c3450246730e 100644 --- a/drivers/iio/adc/at91-sama5d2_adc.c +++ b/drivers/iio/adc/at91-sama5d2_adc.c @@ -586,15 +586,6 @@ struct at91_adc_temp { u16 saved_oversampling; }; -/* - * Buffer size requirements: - * No channels * bytes_per_channel(2) + timestamp bytes (8) - * Divided by 2 because we need half words. - * We assume 32 channels for now, has to be increased if needed. - * Nobody minds a buffer being too big. - */ -#define AT91_BUFFER_MAX_HWORDS ((32 * 2 + 8) / 2) - struct at91_adc_state { void __iomem *base; int irq; @@ -616,8 +607,8 @@ struct at91_adc_state { struct at91_adc_temp temp_st; struct iio_dev *indio_dev; struct device *dev; - /* Ensure naturally aligned timestamp */ - u16 buffer[AT91_BUFFER_MAX_HWORDS] __aligned(8); + /* We assume 32 channels for now, has to be increased if needed. */ + IIO_DECLARE_BUFFER_WITH_TS(u16, buffer, 32); /* * lock to prevent concurrent 'single conversion' requests through * sysfs. -- cgit v1.2.3 From 805bbd3ac96dd66410d44b8ed1faa45f43ef1afb Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Wed, 7 May 2025 15:59:00 +0300 Subject: iio: chemical: mhz19b: Fix error code in probe() Return -ENOMEM if devm_iio_device_alloc() fails. Don't return success. Fixes: 4572a70b3681 ("iio: chemical: Add support for Winsen MHZ19B CO2 sensor") Signed-off-by: Dan Carpenter Reviewed-by: David Lechner Acked-by: Gyeyoung Baek Link: https://patch.msgid.link/aBtZFLFlr0slcYSi@stanley.mountain Signed-off-by: Jonathan Cameron --- drivers/iio/chemical/mhz19b.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/chemical/mhz19b.c b/drivers/iio/chemical/mhz19b.c index c0052ba3ac6c..3c64154918b1 100644 --- a/drivers/iio/chemical/mhz19b.c +++ b/drivers/iio/chemical/mhz19b.c @@ -276,7 +276,7 @@ static int mhz19b_probe(struct serdev_device *serdev) indio_dev = devm_iio_device_alloc(dev, sizeof(*st)); if (!indio_dev) - return ret; + return -ENOMEM; serdev_device_set_drvdata(serdev, indio_dev); st = iio_priv(indio_dev); -- cgit v1.2.3 From 6cdb4009c20186cc3aed7b09187d1cd366960d78 Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Wed, 7 May 2025 14:45:02 +0100 Subject: iio: admv1013: replace redundant ternary operator with just len The variable ret is being assigned a return value and non-zero error return paths are taken at all stages. At the end of the function ret is always zero, so the ternary operator checking for zero ret is redundant and can be replaced with just len instead. Signed-off-by: Colin Ian King Reviewed-by: David Lechner Link: https://patch.msgid.link/20250507134502.254736-1-colin.i.king@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/frequency/admv1013.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/frequency/admv1013.c b/drivers/iio/frequency/admv1013.c index 6f50884d7130..d8e8d541990f 100644 --- a/drivers/iio/frequency/admv1013.c +++ b/drivers/iio/frequency/admv1013.c @@ -319,7 +319,7 @@ static ssize_t admv1013_write(struct iio_dev *indio_dev, return -EINVAL; } - return ret ? ret : len; + return len; } static int admv1013_update_quad_filters(struct admv1013_state *st) -- cgit v1.2.3 From 27737b8407585c0160063b9b39e888d486d86188 Mon Sep 17 00:00:00 2001 From: Chelsy Ratnawat Date: Tue, 6 May 2025 22:57:45 -0700 Subject: HID: sensor-hub: Fix typo and improve documentation Includes the following corrections - - Changed Measurment -> Measurement - Changed clode -> close - Gyro -> gyro Signed-off-by: Chelsy Ratnawat Reviewed-by: David Lechner Link: https://patch.msgid.link/20250507055745.4069933-1-chelsyratnawat2001@gmail.com Signed-off-by: Jonathan Cameron --- include/linux/hid-sensor-hub.h | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/include/linux/hid-sensor-hub.h b/include/linux/hid-sensor-hub.h index 0f9f7df865db..e71056553108 100644 --- a/include/linux/hid-sensor-hub.h +++ b/include/linux/hid-sensor-hub.h @@ -17,7 +17,7 @@ * @attrib_id: Attribute id for this attribute. * @report_id: Report id in which this information resides. * @index: Field index in the report. - * @units: Measurment unit for this attribute. + * @units: Measurement unit for this attribute. * @unit_expo: Exponent used in the data. * @size: Size in bytes for data size. * @logical_minimum: Logical minimum value for this attribute. @@ -39,8 +39,8 @@ struct hid_sensor_hub_attribute_info { * struct sensor_hub_pending - Synchronous read pending information * @status: Pending status true/false. * @ready: Completion synchronization data. - * @usage_id: Usage id for physical device, E.g. Gyro usage id. - * @attr_usage_id: Usage Id of a field, E.g. X-AXIS for a gyro. + * @usage_id: Usage id for physical device, e.g. gyro usage id. + * @attr_usage_id: Usage Id of a field, e.g. X-axis for a gyro. * @raw_size: Response size for a read request. * @raw_data: Place holder for received response. */ @@ -104,10 +104,10 @@ struct hid_sensor_hub_callbacks { int sensor_hub_device_open(struct hid_sensor_hub_device *hsdev); /** -* sensor_hub_device_clode() - Close hub device +* sensor_hub_device_close() - Close hub device * @hsdev: Hub device instance. * -* Used to clode hid device for sensor hub. +* Used to close hid device for sensor hub. */ void sensor_hub_device_close(struct hid_sensor_hub_device *hsdev); -- cgit v1.2.3 From ed7a1e88ad46fa73eeaec14294ddae6a5a518245 Mon Sep 17 00:00:00 2001 From: Ahelenia Ziemiańska Date: Tue, 6 May 2025 21:10:02 +0200 Subject: iio: ssp_sensors: optimalize -> optimize MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Ahelenia Ziemiańska Link: https://patch.msgid.link/5a64aa3034c6127d7587de9b7045a12892c01ee5.1746558529.git.nabijaczleweli@nabijaczleweli.xyz Signed-off-by: Jonathan Cameron --- drivers/iio/common/ssp_sensors/ssp_spi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/common/ssp_sensors/ssp_spi.c b/drivers/iio/common/ssp_sensors/ssp_spi.c index f32b04b63ea1..b7f093d7345b 100644 --- a/drivers/iio/common/ssp_sensors/ssp_spi.c +++ b/drivers/iio/common/ssp_sensors/ssp_spi.c @@ -104,7 +104,7 @@ static struct ssp_msg *ssp_create_msg(u8 cmd, u16 len, u16 opt, u32 data) /* * It is a bit heavy to do it this way but often the function is used to compose * the message from smaller chunks which are placed on the stack. Often the - * chunks are small so memcpy should be optimalized. + * chunks are small so memcpy should be optimized. */ static inline void ssp_fill_buffer(struct ssp_msg *m, unsigned int offset, const void *src, unsigned int len) -- cgit v1.2.3 From 018f50909e66941916b5422ed7aee7475285b0c0 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Tue, 6 May 2025 13:49:57 -0500 Subject: iio: bmp280: zero-init buffer MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Zero-initialize the buffer used with iio_push_to_buffers_with_ts(). The struct used for the buffer has holes in it, so we need to make sure that the holes are zeroed out rather than containing uninitialized data from the stack. Reported-by: Dan Carpenter Closes: https://lore.kernel.org/linux-iio/aBoBR5D1UMjsSUfZ@stanley.mountain/ Fixes: 872c8014e05e ("iio: pressure: bmp280: drop sensor_data array") Signed-off-by: David Lechner Reviewed-by: Nuno Sá Link: https://patch.msgid.link/20250506-iio-pressure-bmp280-zero-init-buffer-v1-1-0935c31558ac@baylibre.com Signed-off-by: Jonathan Cameron --- drivers/iio/pressure/bmp280-core.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/iio/pressure/bmp280-core.c b/drivers/iio/pressure/bmp280-core.c index 5728cc18cced..f37f20776c89 100644 --- a/drivers/iio/pressure/bmp280-core.c +++ b/drivers/iio/pressure/bmp280-core.c @@ -1237,6 +1237,9 @@ static irqreturn_t bme280_trigger_handler(int irq, void *p) } buffer; int ret; + /* Don't leak uninitialized stack to userspace. */ + memset(&buffer, 0, sizeof(buffer)); + guard(mutex)(&data->lock); /* Burst read data registers */ -- cgit v1.2.3 From 034c71a287d0e39c73d88015d8fcaa01072be440 Mon Sep 17 00:00:00 2001 From: Jonathan Santos Date: Thu, 8 May 2025 14:03:04 -0300 Subject: iio: adc: ad7768-1: reorganize driver headers Remove kernel.h since it adds a lot of unnecessary dependencies. Add specific headers to ensure all functions and macros used in the driver are directly declared. Suggested-by: Andy Shevchenko Signed-off-by: Jonathan Santos Reviewed-by: Andy Shevchenko Link: https://patch.msgid.link/1f7677d31a0165cb30d7eb3b4d613e1337937f9a.1746662899.git.Jonathan.Santos@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7768-1.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/iio/adc/ad7768-1.c b/drivers/iio/adc/ad7768-1.c index 47a6ad433585..9d39a643ab69 100644 --- a/drivers/iio/adc/ad7768-1.c +++ b/drivers/iio/adc/ad7768-1.c @@ -4,13 +4,15 @@ * * Copyright 2017 Analog Devices Inc. */ +#include #include #include +#include #include #include #include #include -#include +#include #include #include #include -- cgit v1.2.3 From 844ca960dfe00bee5ef1e82b626478fa3aa280ac Mon Sep 17 00:00:00 2001 From: Tóth János Date: Tue, 6 May 2025 11:01:15 +0200 Subject: dt-bindings: trivial-devices: Document SEN0322 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add documentation for the DFRobot SEN0322 oxygen sensor. Acked-by: Krzysztof Kozlowski Signed-off-by: Tóth János Link: https://patch.msgid.link/20250506-iio-chemical-sen0322-v4-1-1465ac8dc190@gmail.com Signed-off-by: Jonathan Cameron --- Documentation/devicetree/bindings/trivial-devices.yaml | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/trivial-devices.yaml b/Documentation/devicetree/bindings/trivial-devices.yaml index 8da408107e55..a25bf2135649 100644 --- a/Documentation/devicetree/bindings/trivial-devices.yaml +++ b/Documentation/devicetree/bindings/trivial-devices.yaml @@ -85,6 +85,8 @@ properties: - devantech,srf08 # Devantech SRF10 ultrasonic ranger - devantech,srf10 + # DFRobot SEN0322 oxygen sensor + - dfrobot,sen0322 # DH electronics GmbH on-board CPLD trivial SPI device - dh,dhcom-board # DA9053: flexible system level PMIC with multicore support -- cgit v1.2.3 From d524b3e0efa01db32f43957e58b4251c1eb48a5f Mon Sep 17 00:00:00 2001 From: Tóth János Date: Tue, 6 May 2025 11:01:16 +0200 Subject: iio: chemical: Add driver for SEN0322 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add support for the DFRobot SEN0322 oxygen sensor. To instantiate (assuming device is connected to I2C-2): echo 'sen0322 0x73' > /sys/class/i2c-dev/i2c-2/device/new_device To get the oxygen concentration (assuming device is iio:device0) multiply the values read from: /sys/bus/iio/devices/iio:device0/in_concentration_raw /sys/bus/iio/devices/iio:device0/in_concentration_scale Datasheet: https://wiki.dfrobot.com/Gravity_I2C_Oxygen_Sensor_SKU_SEN0322 Signed-off-by: Tóth János Link: https://patch.msgid.link/20250506-iio-chemical-sen0322-v4-2-1465ac8dc190@gmail.com Signed-off-by: Jonathan Cameron --- MAINTAINERS | 6 ++ drivers/iio/chemical/Kconfig | 10 +++ drivers/iio/chemical/Makefile | 1 + drivers/iio/chemical/sen0322.c | 161 +++++++++++++++++++++++++++++++++++++++++ 4 files changed, 178 insertions(+) create mode 100644 drivers/iio/chemical/sen0322.c diff --git a/MAINTAINERS b/MAINTAINERS index cc9582b14ced..a7e8ab43c067 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -6863,6 +6863,12 @@ L: linux-rtc@vger.kernel.org S: Maintained F: drivers/rtc/rtc-sd2405al.c +DFROBOT SEN0322 DRIVER +M: Tóth János +L: linux-iio@vger.kernel.org +S: Maintained +F: drivers/iio/chemical/sen0322.c + DH ELECTRONICS DHSOM SOM AND BOARD SUPPORT M: Christoph Niedermaier M: Marek Vasut diff --git a/drivers/iio/chemical/Kconfig b/drivers/iio/chemical/Kconfig index 7742de3f9cdb..b22afa1f6d59 100644 --- a/drivers/iio/chemical/Kconfig +++ b/drivers/iio/chemical/Kconfig @@ -176,6 +176,16 @@ config SCD4X To compile this driver as a module, choose M here: the module will be called scd4x. +config SEN0322 + tristate "SEN0322 oxygen sensor" + depends on I2C + select REGMAP_I2C + help + Say Y here to build support for the DFRobot SEN0322 oxygen sensor. + + To compile this driver as a module, choose M here: the module will + be called sen0322. + config SENSIRION_SGP30 tristate "Sensirion SGPxx gas sensors" depends on I2C diff --git a/drivers/iio/chemical/Makefile b/drivers/iio/chemical/Makefile index c63daebf39ac..2287a00a6b75 100644 --- a/drivers/iio/chemical/Makefile +++ b/drivers/iio/chemical/Makefile @@ -21,6 +21,7 @@ obj-$(CONFIG_SCD30_CORE) += scd30_core.o obj-$(CONFIG_SCD30_I2C) += scd30_i2c.o obj-$(CONFIG_SCD30_SERIAL) += scd30_serial.o obj-$(CONFIG_SCD4X) += scd4x.o +obj-$(CONFIG_SEN0322) += sen0322.o obj-$(CONFIG_SENSEAIR_SUNRISE_CO2) += sunrise_co2.o obj-$(CONFIG_SENSIRION_SGP30) += sgp30.o obj-$(CONFIG_SENSIRION_SGP40) += sgp40.o diff --git a/drivers/iio/chemical/sen0322.c b/drivers/iio/chemical/sen0322.c new file mode 100644 index 000000000000..96c6fc1203ad --- /dev/null +++ b/drivers/iio/chemical/sen0322.c @@ -0,0 +1,161 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Driver for the DFRobot SEN0322 oxygen sensor. + * + * Datasheet: + * https://wiki.dfrobot.com/Gravity_I2C_Oxygen_Sensor_SKU_SEN0322 + * + * Possible I2C slave addresses: + * 0x70 + * 0x71 + * 0x72 + * 0x73 + * + * Copyright (C) 2025 Tóth János + */ + +#include +#include + +#include + +#define SEN0322_REG_DATA 0x03 +#define SEN0322_REG_COEFF 0x0A + +struct sen0322 { + struct regmap *regmap; +}; + +static int sen0322_read_data(struct sen0322 *sen0322) +{ + u8 data[3] = { }; + int ret; + + ret = regmap_bulk_read(sen0322->regmap, SEN0322_REG_DATA, data, + sizeof(data)); + if (ret < 0) + return ret; + + /* + * The actual value in the registers is: + * val = data[0] + data[1] / 10 + data[2] / 100 + * but it is multiplied by 100 here to avoid floating-point math + * and the scale is divided by 100 to compensate this. + */ + return data[0] * 100 + data[1] * 10 + data[2]; +} + +static int sen0322_read_scale(struct sen0322 *sen0322, int *num, int *den) +{ + u32 val; + int ret; + + ret = regmap_read(sen0322->regmap, SEN0322_REG_COEFF, &val); + if (ret < 0) + return ret; + + if (val) { + *num = val; + *den = 100000; /* Coeff is scaled by 1000 at calibration. */ + } else { /* The device is not calibrated, using the factory-defaults. */ + *num = 209; /* Oxygen content in the atmosphere is 20.9%. */ + *den = 120000; /* Output of the sensor at 20.9% is 120 uA. */ + } + + dev_dbg(regmap_get_device(sen0322->regmap), "scale: %d/%d\n", + *num, *den); + + return 0; +} + +static int sen0322_read_raw(struct iio_dev *iio_dev, + const struct iio_chan_spec *chan, + int *val, int *val2, long mask) +{ + struct sen0322 *sen0322 = iio_priv(iio_dev); + int ret; + + if (chan->type != IIO_CONCENTRATION) + return -EINVAL; + + switch (mask) { + case IIO_CHAN_INFO_RAW: + ret = sen0322_read_data(sen0322); + if (ret < 0) + return ret; + + *val = ret; + return IIO_VAL_INT; + + case IIO_CHAN_INFO_SCALE: + ret = sen0322_read_scale(sen0322, val, val2); + if (ret < 0) + return ret; + + return IIO_VAL_FRACTIONAL; + + default: + return -EINVAL; + } +} + +static const struct iio_info sen0322_info = { + .read_raw = sen0322_read_raw, +}; + +static const struct regmap_config sen0322_regmap_conf = { + .reg_bits = 8, + .val_bits = 8, +}; + +static const struct iio_chan_spec sen0322_channel = { + .type = IIO_CONCENTRATION, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_SCALE), +}; + +static int sen0322_probe(struct i2c_client *client) +{ + struct sen0322 *sen0322; + struct iio_dev *iio_dev; + + if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) + return -ENODEV; + + iio_dev = devm_iio_device_alloc(&client->dev, sizeof(*sen0322)); + if (!iio_dev) + return -ENOMEM; + + sen0322 = iio_priv(iio_dev); + + sen0322->regmap = devm_regmap_init_i2c(client, &sen0322_regmap_conf); + if (IS_ERR(sen0322->regmap)) + return PTR_ERR(sen0322->regmap); + + iio_dev->info = &sen0322_info; + iio_dev->name = "sen0322"; + iio_dev->channels = &sen0322_channel; + iio_dev->num_channels = 1; + iio_dev->modes = INDIO_DIRECT_MODE; + + return devm_iio_device_register(&client->dev, iio_dev); +} + +static const struct of_device_id sen0322_of_match[] = { + { .compatible = "dfrobot,sen0322" }, + { } +}; +MODULE_DEVICE_TABLE(of, sen0322_of_match); + +static struct i2c_driver sen0322_driver = { + .driver = { + .name = "sen0322", + .of_match_table = sen0322_of_match, + }, + .probe = sen0322_probe, +}; +module_i2c_driver(sen0322_driver); + +MODULE_AUTHOR("Tóth János "); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("SEN0322 oxygen sensor driver"); -- cgit v1.2.3 From c8c2db399758427a42747d89e220a7d5b7b55bfb Mon Sep 17 00:00:00 2001 From: Eason Yang Date: Mon, 12 May 2025 16:31:55 +0800 Subject: dt-bindings: iio: adc: add NCT7201 ADCs Add a binding specification for the Nuvoton NCT7201/NCT7202 up to 12-bit ADCs with I2C interface. Signed-off-by: Eason Yang Reviewed-by: Krzysztof Kozlowski Link: https://patch.msgid.link/20250512083156.3300006-2-j2anfernee@gmail.com Signed-off-by: Jonathan Cameron --- .../bindings/iio/adc/nuvoton,nct7201.yaml | 70 ++++++++++++++++++++++ MAINTAINERS | 6 ++ 2 files changed, 76 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/adc/nuvoton,nct7201.yaml diff --git a/Documentation/devicetree/bindings/iio/adc/nuvoton,nct7201.yaml b/Documentation/devicetree/bindings/iio/adc/nuvoton,nct7201.yaml new file mode 100644 index 000000000000..8ce7d415d956 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/nuvoton,nct7201.yaml @@ -0,0 +1,70 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/adc/nuvoton,nct7201.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Nuvoton nct7201 and similar ADCs + +maintainers: + - Eason Yang + +description: | + The NCT7201/NCT7202 is a Nuvoton Hardware Monitor IC, contains up to 12 + voltage monitoring channels, with SMBus interface, and up to 4 sets SMBus + address selection by ADDR connection. It also provides ALERT# signal for + event notification and reset input RSTIN# to recover it from a fault + condition. + + NCT7201 contains 8 voltage monitor inputs (VIN1~VIN8). + NCT7202 contains 12 voltage monitor inputs (VIN1~VIN12). + +properties: + compatible: + enum: + - nuvoton,nct7201 + - nuvoton,nct7202 + + reg: + maxItems: 1 + + vdd-supply: + description: + A 3.3V to supply that powers the chip. + + vref-supply: + description: + The regulator supply for the ADC reference voltage. + + interrupts: + maxItems: 1 + + reset-gpios: + maxItems: 1 + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + #include + #include + + i2c { + #address-cells = <1>; + #size-cells = <0>; + + adc@1d { + compatible = "nuvoton,nct7202"; + reg = <0x1d>; + vdd-supply = <&vdd>; + vref-supply = <&vref>; + interrupt-parent = <&gpio3>; + interrupts = <30 IRQ_TYPE_LEVEL_LOW>; + reset-gpios = <&gpio3 28 GPIO_ACTIVE_LOW>; + }; + }; +... diff --git a/MAINTAINERS b/MAINTAINERS index a7e8ab43c067..bb8b5dd333b1 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -17336,6 +17336,12 @@ F: drivers/nubus/ F: include/linux/nubus.h F: include/uapi/linux/nubus.h +NUVOTON NCT7201 IIO DRIVER +M: Eason Yang +L: linux-iio@vger.kernel.org +S: Maintained +F: Documentation/devicetree/bindings/iio/adc/nuvoton,nct7201.yaml + NVIDIA (rivafb and nvidiafb) FRAMEBUFFER DRIVER M: Antonino Daplas L: linux-fbdev@vger.kernel.org -- cgit v1.2.3 From 5aef97a9126e2441744e0faab4850e6274e23519 Mon Sep 17 00:00:00 2001 From: Eason Yang Date: Mon, 12 May 2025 16:31:56 +0800 Subject: iio: adc: add support for Nuvoton NCT7201 Add Nuvoton NCT7201/NCT7202 system voltage monitor 12-bit ADC driver NCT7201/NCT7202 supports up to 12 analog voltage monitor inputs and up to 4 SMBus addresses by ADDR pin. Meanwhile, ALERT# hardware event pins for independent alarm signals, and all the threshold values could be set for system protection without any timing delay. It also supports reset input RSTIN# to recover system from a fault condition. Currently, only single-edge mode conversion and threshold events are supported. Signed-off-by: Eason Yang Reviewed-by: Andy Shevchenko Link: https://patch.msgid.link/20250512083156.3300006-3-j2anfernee@gmail.com Signed-off-by: Jonathan Cameron --- MAINTAINERS | 1 + drivers/iio/adc/Kconfig | 11 + drivers/iio/adc/Makefile | 1 + drivers/iio/adc/nct7201.c | 501 ++++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 514 insertions(+) create mode 100644 drivers/iio/adc/nct7201.c diff --git a/MAINTAINERS b/MAINTAINERS index bb8b5dd333b1..86a2045ba62e 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -17341,6 +17341,7 @@ M: Eason Yang L: linux-iio@vger.kernel.org S: Maintained F: Documentation/devicetree/bindings/iio/adc/nuvoton,nct7201.yaml +F: drivers/iio/adc/nct7201.c NVIDIA (rivafb and nvidiafb) FRAMEBUFFER DRIVER M: Antonino Daplas diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig index 0fe6601e59ed..186a453af56c 100644 --- a/drivers/iio/adc/Kconfig +++ b/drivers/iio/adc/Kconfig @@ -1103,6 +1103,17 @@ config NAU7802 To compile this driver as a module, choose M here: the module will be called nau7802. +config NCT7201 + tristate "Nuvoton Instruments NCT7201 and NCT7202 Power Monitor" + depends on I2C + select REGMAP_I2C + help + If you say yes here you get support for the Nuvoton NCT7201 and + NCT7202 Voltage Monitor. + + This driver can also be built as a module. If so, the module + will be called nct7201. + config NPCM_ADC tristate "Nuvoton NPCM ADC driver" depends on ARCH_NPCM || COMPILE_TEST diff --git a/drivers/iio/adc/Makefile b/drivers/iio/adc/Makefile index 07d4b832c42e..09ae6edb2650 100644 --- a/drivers/iio/adc/Makefile +++ b/drivers/iio/adc/Makefile @@ -99,6 +99,7 @@ obj-$(CONFIG_MESON_SARADC) += meson_saradc.o obj-$(CONFIG_MP2629_ADC) += mp2629_adc.o obj-$(CONFIG_MXS_LRADC_ADC) += mxs-lradc-adc.o obj-$(CONFIG_NAU7802) += nau7802.o +obj-$(CONFIG_NCT7201) += nct7201.o obj-$(CONFIG_NPCM_ADC) += npcm_adc.o obj-$(CONFIG_PAC1921) += pac1921.o obj-$(CONFIG_PAC1934) += pac1934.o diff --git a/drivers/iio/adc/nct7201.c b/drivers/iio/adc/nct7201.c new file mode 100644 index 000000000000..d87824e5490f --- /dev/null +++ b/drivers/iio/adc/nct7201.c @@ -0,0 +1,501 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Driver for Nuvoton nct7201 and nct7202 power monitor chips. + * + * Copyright (c) 2024-2025 Nuvoton Technology corporation. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#define NCT7201_REG_INTERRUPT_STATUS 0x0C +#define NCT7201_REG_VOLT_LOW_BYTE 0x0F +#define NCT7201_REG_CONFIGURATION 0x10 +#define NCT7201_BIT_CONFIGURATION_START BIT(0) +#define NCT7201_BIT_CONFIGURATION_ALERT_MSK BIT(1) +#define NCT7201_BIT_CONFIGURATION_CONV_RATE BIT(2) +#define NCT7201_BIT_CONFIGURATION_RESET BIT(7) + +#define NCT7201_REG_ADVANCED_CONFIGURATION 0x11 +#define NCT7201_BIT_ADVANCED_CONF_MOD_ALERT BIT(0) +#define NCT7201_BIT_ADVANCED_CONF_MOD_STS BIT(1) +#define NCT7201_BIT_ADVANCED_CONF_FAULT_QUEUE BIT(2) +#define NCT7201_BIT_ADVANCED_CONF_EN_DEEP_SHUTDOWN BIT(4) +#define NCT7201_BIT_ADVANCED_CONF_EN_SMB_TIMEOUT BIT(5) +#define NCT7201_BIT_ADVANCED_CONF_MOD_RSTIN BIT(7) + +#define NCT7201_REG_CHANNEL_INPUT_MODE 0x12 +#define NCT7201_REG_CHANNEL_ENABLE 0x13 +#define NCT7201_REG_INTERRUPT_MASK_1 0x15 +#define NCT7201_REG_INTERRUPT_MASK_2 0x16 +#define NCT7201_REG_BUSY_STATUS 0x1E +#define NCT7201_BIT_BUSY BIT(0) +#define NCT7201_BIT_PWR_UP BIT(1) +#define NCT7201_REG_ONE_SHOT 0x1F +#define NCT7201_REG_SMUS_ADDRESS 0xFC +#define NCT7201_REG_VIN_MASK GENMASK(15, 3) + +#define NCT7201_REG_VIN(i) (0x00 + i) +#define NCT7201_REG_VIN_HIGH_LIMIT(i) (0x20 + (i) * 2) +#define NCT7201_REG_VIN_LOW_LIMIT(i) (0x21 + (i) * 2) +#define NCT7201_MAX_CHANNEL 12 + +static const struct regmap_range nct7201_read_reg_range[] = { + regmap_reg_range(NCT7201_REG_INTERRUPT_STATUS, NCT7201_REG_BUSY_STATUS), + regmap_reg_range(NCT7201_REG_SMUS_ADDRESS, NCT7201_REG_SMUS_ADDRESS), +}; + +static const struct regmap_access_table nct7201_readable_regs_tbl = { + .yes_ranges = nct7201_read_reg_range, + .n_yes_ranges = ARRAY_SIZE(nct7201_read_reg_range), +}; + +static const struct regmap_range nct7201_write_reg_range[] = { + regmap_reg_range(NCT7201_REG_CONFIGURATION, NCT7201_REG_INTERRUPT_MASK_2), + regmap_reg_range(NCT7201_REG_ONE_SHOT, NCT7201_REG_ONE_SHOT), +}; + +static const struct regmap_access_table nct7201_writeable_regs_tbl = { + .yes_ranges = nct7201_write_reg_range, + .n_yes_ranges = ARRAY_SIZE(nct7201_write_reg_range), +}; + +static const struct regmap_range nct7201_read_vin_reg_range[] = { + regmap_reg_range(NCT7201_REG_VIN(0), NCT7201_REG_VIN(NCT7201_MAX_CHANNEL - 1)), + regmap_reg_range(NCT7201_REG_VIN_HIGH_LIMIT(0), + NCT7201_REG_VIN_LOW_LIMIT(NCT7201_MAX_CHANNEL - 1)), +}; + +static const struct regmap_access_table nct7201_readable_vin_regs_tbl = { + .yes_ranges = nct7201_read_vin_reg_range, + .n_yes_ranges = ARRAY_SIZE(nct7201_read_vin_reg_range), +}; + +static const struct regmap_range nct7201_write_vin_reg_range[] = { + regmap_reg_range(NCT7201_REG_VIN_HIGH_LIMIT(0), + NCT7201_REG_VIN_LOW_LIMIT(NCT7201_MAX_CHANNEL - 1)), +}; + +static const struct regmap_access_table nct7201_writeable_vin_regs_tbl = { + .yes_ranges = nct7201_write_vin_reg_range, + .n_yes_ranges = ARRAY_SIZE(nct7201_write_vin_reg_range), +}; + +static const struct regmap_config nct7201_regmap8_config = { + .name = "vin-data-read-byte", + .reg_bits = 8, + .val_bits = 8, + .use_single_read = true, + .use_single_write = true, + .max_register = 0xff, + .rd_table = &nct7201_readable_regs_tbl, + .wr_table = &nct7201_writeable_regs_tbl, +}; + +static const struct regmap_config nct7201_regmap16_config = { + .name = "vin-data-read-word", + .reg_bits = 8, + .val_bits = 16, + .max_register = 0xff, + .rd_table = &nct7201_readable_vin_regs_tbl, + .wr_table = &nct7201_writeable_vin_regs_tbl, +}; + +struct nct7201_chip_info { + struct regmap *regmap; + struct regmap *regmap16; + int num_vin_channels; + __le16 vin_mask; +}; + +struct nct7201_adc_model_data { + const char *model_name; + const struct iio_chan_spec *channels; + unsigned int num_channels; + int num_vin_channels; +}; + +static const struct iio_event_spec nct7201_events[] = { + { + .type = IIO_EV_TYPE_THRESH, + .dir = IIO_EV_DIR_RISING, + .mask_separate = BIT(IIO_EV_INFO_VALUE) | + BIT(IIO_EV_INFO_ENABLE), + }, { + .type = IIO_EV_TYPE_THRESH, + .dir = IIO_EV_DIR_FALLING, + .mask_separate = BIT(IIO_EV_INFO_VALUE) | + BIT(IIO_EV_INFO_ENABLE), + }, +}; + +#define NCT7201_VOLTAGE_CHANNEL(num) \ + { \ + .type = IIO_VOLTAGE, \ + .indexed = 1, \ + .channel = num + 1, \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \ + .address = num, \ + .event_spec = nct7201_events, \ + .num_event_specs = ARRAY_SIZE(nct7201_events), \ + } + +static const struct iio_chan_spec nct7201_channels[] = { + NCT7201_VOLTAGE_CHANNEL(0), + NCT7201_VOLTAGE_CHANNEL(1), + NCT7201_VOLTAGE_CHANNEL(2), + NCT7201_VOLTAGE_CHANNEL(3), + NCT7201_VOLTAGE_CHANNEL(4), + NCT7201_VOLTAGE_CHANNEL(5), + NCT7201_VOLTAGE_CHANNEL(6), + NCT7201_VOLTAGE_CHANNEL(7), +}; + +static const struct iio_chan_spec nct7202_channels[] = { + NCT7201_VOLTAGE_CHANNEL(0), + NCT7201_VOLTAGE_CHANNEL(1), + NCT7201_VOLTAGE_CHANNEL(2), + NCT7201_VOLTAGE_CHANNEL(3), + NCT7201_VOLTAGE_CHANNEL(4), + NCT7201_VOLTAGE_CHANNEL(5), + NCT7201_VOLTAGE_CHANNEL(6), + NCT7201_VOLTAGE_CHANNEL(7), + NCT7201_VOLTAGE_CHANNEL(8), + NCT7201_VOLTAGE_CHANNEL(9), + NCT7201_VOLTAGE_CHANNEL(10), + NCT7201_VOLTAGE_CHANNEL(11), +}; + +static int nct7201_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int *val, int *val2, long mask) +{ + struct nct7201_chip_info *chip = iio_priv(indio_dev); + unsigned int value; + int err; + + if (chan->type != IIO_VOLTAGE) + return -EOPNOTSUPP; + + switch (mask) { + case IIO_CHAN_INFO_RAW: + err = regmap_read(chip->regmap16, NCT7201_REG_VIN(chan->address), &value); + if (err) + return err; + *val = FIELD_GET(NCT7201_REG_VIN_MASK, value); + return IIO_VAL_INT; + case IIO_CHAN_INFO_SCALE: + /* From the datasheet, we have to multiply by 0.0004995 */ + *val = 0; + *val2 = 499500; + return IIO_VAL_INT_PLUS_NANO; + default: + return -EINVAL; + } +} + +static int nct7201_read_event_value(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir, + enum iio_event_info info, + int *val, int *val2) +{ + struct nct7201_chip_info *chip = iio_priv(indio_dev); + unsigned int value; + int err; + + if (chan->type != IIO_VOLTAGE) + return -EOPNOTSUPP; + + if (info != IIO_EV_INFO_VALUE) + return -EINVAL; + + if (dir == IIO_EV_DIR_FALLING) + err = regmap_read(chip->regmap16, NCT7201_REG_VIN_LOW_LIMIT(chan->address), + &value); + else + err = regmap_read(chip->regmap16, NCT7201_REG_VIN_HIGH_LIMIT(chan->address), + &value); + if (err) + return err; + + *val = FIELD_GET(NCT7201_REG_VIN_MASK, value); + + return IIO_VAL_INT; +} + +static int nct7201_write_event_value(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir, + enum iio_event_info info, + int val, int val2) +{ + struct nct7201_chip_info *chip = iio_priv(indio_dev); + int err; + + if (chan->type != IIO_VOLTAGE) + return -EOPNOTSUPP; + + if (info != IIO_EV_INFO_VALUE) + return -EOPNOTSUPP; + + if (dir == IIO_EV_DIR_FALLING) + err = regmap_write(chip->regmap16, NCT7201_REG_VIN_LOW_LIMIT(chan->address), + FIELD_PREP(NCT7201_REG_VIN_MASK, val)); + else + err = regmap_write(chip->regmap16, NCT7201_REG_VIN_HIGH_LIMIT(chan->address), + FIELD_PREP(NCT7201_REG_VIN_MASK, val)); + + return err; +} + +static int nct7201_read_event_config(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir) +{ + struct nct7201_chip_info *chip = iio_priv(indio_dev); + + if (chan->type != IIO_VOLTAGE) + return -EOPNOTSUPP; + + return !!(le16_to_cpu(chip->vin_mask) & BIT(chan->address)); +} + +static int nct7201_write_event_config(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir, + bool state) +{ + struct nct7201_chip_info *chip = iio_priv(indio_dev); + __le16 mask = cpu_to_le16(BIT(chan->address)); + int err; + + if (chan->type != IIO_VOLTAGE) + return -EOPNOTSUPP; + + if (state) + chip->vin_mask |= mask; + else + chip->vin_mask &= ~mask; + + if (chip->num_vin_channels <= 8) + err = regmap_write(chip->regmap, NCT7201_REG_CHANNEL_ENABLE, + le16_to_cpu(chip->vin_mask)); + else + err = regmap_bulk_write(chip->regmap, NCT7201_REG_CHANNEL_ENABLE, + &chip->vin_mask, sizeof(chip->vin_mask)); + + return err; +} + +static const struct iio_info nct7201_info = { + .read_raw = nct7201_read_raw, + .read_event_config = nct7201_read_event_config, + .write_event_config = nct7201_write_event_config, + .read_event_value = nct7201_read_event_value, + .write_event_value = nct7201_write_event_value, +}; + +static const struct iio_info nct7201_info_no_irq = { + .read_raw = nct7201_read_raw, +}; + +static const struct nct7201_adc_model_data nct7201_model_data = { + .model_name = "nct7201", + .channels = nct7201_channels, + .num_channels = ARRAY_SIZE(nct7201_channels), + .num_vin_channels = 8, +}; + +static const struct nct7201_adc_model_data nct7202_model_data = { + .model_name = "nct7202", + .channels = nct7202_channels, + .num_channels = ARRAY_SIZE(nct7202_channels), + .num_vin_channels = 12, +}; + +static int nct7201_init_chip(struct nct7201_chip_info *chip) +{ + struct device *dev = regmap_get_device(chip->regmap); + __le16 data = cpu_to_le16(GENMASK(chip->num_vin_channels - 1, 0)); + unsigned int value; + int err; + + err = regmap_write(chip->regmap, NCT7201_REG_CONFIGURATION, + NCT7201_BIT_CONFIGURATION_RESET); + if (err) + return dev_err_probe(dev, err, "Failed to reset chip\n"); + + /* + * After about 25 msecs, the device should be ready and then the power-up + * bit will be set to 1. + */ + fsleep(25 * USEC_PER_MSEC); + + err = regmap_read(chip->regmap, NCT7201_REG_BUSY_STATUS, &value); + if (err) + return dev_err_probe(dev, err, "Failed to read busy status\n"); + if (!(value & NCT7201_BIT_PWR_UP)) + return dev_err_probe(dev, -EIO, "Failed to power up after reset\n"); + + /* Enable Channels */ + if (chip->num_vin_channels <= 8) + err = regmap_write(chip->regmap, NCT7201_REG_CHANNEL_ENABLE, + le16_to_cpu(data)); + else + err = regmap_bulk_write(chip->regmap, NCT7201_REG_CHANNEL_ENABLE, + &data, sizeof(data)); + if (err) + return dev_err_probe(dev, err, "Failed to enable channels\n"); + + err = regmap_bulk_read(chip->regmap, NCT7201_REG_CHANNEL_ENABLE, + &chip->vin_mask, sizeof(chip->vin_mask)); + if (err) + return dev_err_probe(dev, err, + "Failed to read channel enable register\n"); + + /* Start monitoring if needed */ + err = regmap_set_bits(chip->regmap, NCT7201_REG_CONFIGURATION, + NCT7201_BIT_CONFIGURATION_START); + if (err) + return dev_err_probe(dev, err, "Failed to start monitoring\n"); + + return 0; +} + +static irqreturn_t nct7201_irq_handler(int irq, void *private) +{ + struct iio_dev *indio_dev = private; + struct nct7201_chip_info *chip = iio_priv(indio_dev); + __le16 data; + int err; + + err = regmap_bulk_read(chip->regmap, NCT7201_REG_INTERRUPT_STATUS, + &data, sizeof(data)); + if (err) + return IRQ_NONE; + + if (data) + iio_push_event(indio_dev, + IIO_UNMOD_EVENT_CODE(IIO_VOLTAGE, + 0, + IIO_EV_TYPE_THRESH, + IIO_EV_DIR_EITHER), + iio_get_time_ns(indio_dev)); + + return IRQ_HANDLED; +} + +static int nct7201_probe(struct i2c_client *client) +{ + const struct nct7201_adc_model_data *model_data; + struct device *dev = &client->dev; + struct nct7201_chip_info *chip; + struct iio_dev *indio_dev; + int ret; + + model_data = i2c_get_match_data(client); + if (!model_data) + return -ENODEV; + + indio_dev = devm_iio_device_alloc(dev, sizeof(*chip)); + if (!indio_dev) + return -ENOMEM; + chip = iio_priv(indio_dev); + + chip->regmap = devm_regmap_init_i2c(client, &nct7201_regmap8_config); + if (IS_ERR(chip->regmap)) + return dev_err_probe(dev, PTR_ERR(chip->regmap), + "Failed to init regmap\n"); + + chip->regmap16 = devm_regmap_init_i2c(client, &nct7201_regmap16_config); + if (IS_ERR(chip->regmap16)) + return dev_err_probe(dev, PTR_ERR(chip->regmap16), + "Failed to init regmap16\n"); + + chip->num_vin_channels = model_data->num_vin_channels; + + ret = nct7201_init_chip(chip); + if (ret) + return ret; + + indio_dev->name = model_data->model_name; + indio_dev->channels = model_data->channels; + indio_dev->num_channels = model_data->num_channels; + if (client->irq) { + /* Enable alert function */ + ret = regmap_clear_bits(chip->regmap, NCT7201_REG_CONFIGURATION, + NCT7201_BIT_CONFIGURATION_ALERT_MSK); + if (ret) + return dev_err_probe(dev, ret, + "Failed to enable alert function\n"); + + ret = devm_request_threaded_irq(dev, client->irq, + NULL, nct7201_irq_handler, + IRQF_TRIGGER_LOW | IRQF_ONESHOT, + client->name, indio_dev); + if (ret) + return dev_err_probe(dev, ret, + "Failed to assign interrupt.\n"); + + indio_dev->info = &nct7201_info; + } else { + indio_dev->info = &nct7201_info_no_irq; + } + indio_dev->modes = INDIO_DIRECT_MODE; + + return devm_iio_device_register(dev, indio_dev); +} + +static const struct i2c_device_id nct7201_id[] = { + { .name = "nct7201", .driver_data = (kernel_ulong_t)&nct7201_model_data }, + { .name = "nct7202", .driver_data = (kernel_ulong_t)&nct7202_model_data }, + { } +}; +MODULE_DEVICE_TABLE(i2c, nct7201_id); + +static const struct of_device_id nct7201_of_match[] = { + { + .compatible = "nuvoton,nct7201", + .data = &nct7201_model_data, + }, + { + .compatible = "nuvoton,nct7202", + .data = &nct7202_model_data, + }, + { } +}; +MODULE_DEVICE_TABLE(of, nct7201_of_match); + +static struct i2c_driver nct7201_driver = { + .driver = { + .name = "nct7201", + .of_match_table = nct7201_of_match, + }, + .probe = nct7201_probe, + .id_table = nct7201_id, +}; +module_i2c_driver(nct7201_driver); + +MODULE_AUTHOR("Eason Yang "); +MODULE_DESCRIPTION("Nuvoton NCT7201 voltage monitor driver"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3 From 0c86e33819785fe50616b6ee3fb35c1e4be406d5 Mon Sep 17 00:00:00 2001 From: Matti Vaittinen Date: Wed, 14 May 2025 09:25:13 +0300 Subject: dt-bindings: iio: adc: Add ROHM BD79100G The ROHM BD79100G is a 12-bit ADC which can be read over SPI. Device has no MOSI pin. ADC results can be read from MISO by clocking in 16 bits. The 4 leading bits will be zero, last 12 containig the data. Device has only VCC supply pin, which acts also as a VFS, determining the voltage for full 12-bits. Specifying it is mandatory. This seems identical to the ti,ads7866. Support ROHM BU79100G using ti,ads7866 as a fallback. Signed-off-by: Matti Vaittinen Acked-by: Conor Dooley Link: https://patch.msgid.link/4907a096eee1f54afae834213cf721b551382d4e.1747203712.git.mazziesaccount@gmail.com Signed-off-by: Jonathan Cameron --- .../devicetree/bindings/iio/adc/adi,ad7476.yaml | 63 ++++++++++++---------- 1 file changed, 34 insertions(+), 29 deletions(-) diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7476.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7476.yaml index 44c671eeda73..d0cb32f136e5 100644 --- a/Documentation/devicetree/bindings/iio/adc/adi,ad7476.yaml +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7476.yaml @@ -17,35 +17,40 @@ description: | properties: compatible: - enum: - - adi,ad7091 - - adi,ad7091r - - adi,ad7273 - - adi,ad7274 - - adi,ad7276 - - adi,ad7277 - - adi,ad7278 - - adi,ad7466 - - adi,ad7467 - - adi,ad7468 - - adi,ad7475 - - adi,ad7476 - - adi,ad7476a - - adi,ad7477 - - adi,ad7477a - - adi,ad7478 - - adi,ad7478a - - adi,ad7495 - - adi,ad7910 - - adi,ad7920 - - adi,ad7940 - - ti,adc081s - - ti,adc101s - - ti,adc121s - - ti,ads7866 - - ti,ads7867 - - ti,ads7868 - - lltc,ltc2314-14 + oneOf: + - items: + - enum: + - adi,ad7091 + - adi,ad7091r + - adi,ad7273 + - adi,ad7274 + - adi,ad7276 + - adi,ad7277 + - adi,ad7278 + - adi,ad7466 + - adi,ad7467 + - adi,ad7468 + - adi,ad7475 + - adi,ad7476 + - adi,ad7476a + - adi,ad7477 + - adi,ad7477a + - adi,ad7478 + - adi,ad7478a + - adi,ad7495 + - adi,ad7910 + - adi,ad7920 + - adi,ad7940 + - ti,adc081s + - ti,adc101s + - ti,adc121s + - ti,ads7866 + - ti,ads7867 + - ti,ads7868 + - lltc,ltc2314-14 + - items: + - const: rohm,bu79100g + - const: ti,ads7866 reg: maxItems: 1 -- cgit v1.2.3 From ae3392c0f12f179b969ce17856ed18bf8d69a35e Mon Sep 17 00:00:00 2001 From: Dharma Balasubiramani Date: Tue, 20 May 2025 20:51:46 +0530 Subject: counter: microchip-tcb-capture: Add watch validation support The Timer Counter Block (TCB) exposes several kinds of events to the Counter framework, but not every event is meaningful on every hardware channel. Add a `watch_validate()` callback so userspace may register only the combinations actually supported: * Channel 0 (COUNTER_MCHP_EVCHN_CV, COUNTER_MCHP_EVCHN_RA) - COUNTER_EVENT_CAPTURE - COUNTER_EVENT_CHANGE_OF_STATE - COUNTER_EVENT_OVERFLOW * Channel 1 (COUNTER_MCHP_EVCHN_RB) - COUNTER_EVENT_CAPTURE * Channel 2 (COUNTER_MCHP_EVCHN_RC) - COUNTER_EVENT_THRESHOLD Any other request is rejected with `-EINVAL`. Signed-off-by: Dharma Balasubiramani Link: https://lore.kernel.org/r/20250520-counter-tcb-v3-1-4631e2aff7ed@microchip.com Signed-off-by: William Breathitt Gray --- drivers/counter/microchip-tcb-capture.c | 25 ++++++++++++++++++++++++- 1 file changed, 24 insertions(+), 1 deletion(-) diff --git a/drivers/counter/microchip-tcb-capture.c b/drivers/counter/microchip-tcb-capture.c index 1de3c50b9804..1a299d1f350b 100644 --- a/drivers/counter/microchip-tcb-capture.c +++ b/drivers/counter/microchip-tcb-capture.c @@ -337,6 +337,28 @@ static struct counter_comp mchp_tc_count_ext[] = { COUNTER_COMP_COMPARE(mchp_tc_count_compare_read, mchp_tc_count_compare_write), }; +static int mchp_tc_watch_validate(struct counter_device *counter, + const struct counter_watch *watch) +{ + if (watch->channel == COUNTER_MCHP_EVCHN_CV || watch->channel == COUNTER_MCHP_EVCHN_RA) + switch (watch->event) { + case COUNTER_EVENT_CHANGE_OF_STATE: + case COUNTER_EVENT_OVERFLOW: + case COUNTER_EVENT_CAPTURE: + return 0; + default: + return -EINVAL; + } + + if (watch->channel == COUNTER_MCHP_EVCHN_RB && watch->event == COUNTER_EVENT_CAPTURE) + return 0; + + if (watch->channel == COUNTER_MCHP_EVCHN_RC && watch->event == COUNTER_EVENT_THRESHOLD) + return 0; + + return -EINVAL; +} + static struct counter_count mchp_tc_counts[] = { { .id = 0, @@ -356,7 +378,8 @@ static const struct counter_ops mchp_tc_ops = { .function_read = mchp_tc_count_function_read, .function_write = mchp_tc_count_function_write, .action_read = mchp_tc_count_action_read, - .action_write = mchp_tc_count_action_write + .action_write = mchp_tc_count_action_write, + .watch_validate = mchp_tc_watch_validate, }; static const struct atmel_tcb_config tcb_rm9200_config = { -- cgit v1.2.3 From 9857af0fcff385c75433f2162c30c62eb912ef6d Mon Sep 17 00:00:00 2001 From: Carlos Llamas Date: Sat, 24 May 2025 22:07:58 +0000 Subject: binder: fix yet another UAF in binder_devices Commit e77aff5528a18 ("binderfs: fix use-after-free in binder_devices") addressed a use-after-free where devices could be released without first being removed from the binder_devices list. However, there is a similar path in binder_free_proc() that was missed: ================================================================== BUG: KASAN: slab-use-after-free in binder_remove_device+0xd4/0x100 Write of size 8 at addr ffff0000c773b900 by task umount/467 CPU: 12 UID: 0 PID: 467 Comm: umount Not tainted 6.15.0-rc7-00138-g57483a362741 #9 PREEMPT Hardware name: linux,dummy-virt (DT) Call trace: binder_remove_device+0xd4/0x100 binderfs_evict_inode+0x230/0x2f0 evict+0x25c/0x5dc iput+0x304/0x480 dentry_unlink_inode+0x208/0x46c __dentry_kill+0x154/0x530 [...] Allocated by task 463: __kmalloc_cache_noprof+0x13c/0x324 binderfs_binder_device_create.isra.0+0x138/0xa60 binder_ctl_ioctl+0x1ac/0x230 [...] Freed by task 215: kfree+0x184/0x31c binder_proc_dec_tmpref+0x33c/0x4ac binder_deferred_func+0xc10/0x1108 process_one_work+0x520/0xba4 [...] ================================================================== Call binder_remove_device() within binder_free_proc() to ensure the device is removed from the binder_devices list before being kfreed. Cc: stable@vger.kernel.org Fixes: 12d909cac1e1 ("binderfs: add new binder devices to binder_devices") Reported-by: syzbot+4af454407ec393de51d6@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=4af454407ec393de51d6 Tested-by: syzbot+4af454407ec393de51d6@syzkaller.appspotmail.com Signed-off-by: Carlos Llamas Link: https://lore.kernel.org/r/20250524220758.915028-1-cmllamas@google.com Signed-off-by: Greg Kroah-Hartman --- drivers/android/binder.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/android/binder.c b/drivers/android/binder.c index 682bbe4ad550..c463ca4a8fff 100644 --- a/drivers/android/binder.c +++ b/drivers/android/binder.c @@ -5241,6 +5241,7 @@ static void binder_free_proc(struct binder_proc *proc) __func__, proc->outstanding_txns); device = container_of(proc->context, struct binder_device, context); if (refcount_dec_and_test(&device->ref)) { + binder_remove_device(device); kfree(proc->context->name); kfree(device); } -- cgit v1.2.3