user/sven/linux.git/drivers/iio/light, branch v5.13

iio: tsl2583: Fix division by a zero lux_val

2021-05-10T13:01:48Z

The lux_val returned from tsl2583_get_lux can potentially be zero, so check for this to avoid a division by zero and an overflowed gain_trim_val. Fixes clang scan-build warning: drivers/iio/light/tsl2583.c:345:40: warning: Either the condition 'lux_val<0' is redundant or there is division by zero at line 345. [zerodivcond] Fixes: ac4f6eee8fe8 ("staging: iio: TAOS tsl258x: Device driver") Signed-off-by: Colin Ian King Cc: Signed-off-by: Jonathan Cameron

iio: hid-sensors: select IIO_TRIGGERED_BUFFER under HID_SENSOR_IIO_TRIGGER

2021-05-10T13:01:48Z

During commit 067fda1c065ff ("iio: hid-sensors: move triggered buffer setup into hid_sensor_setup_trigger"), the iio_triggered_buffer_{setup,cleanup}() functions got moved under the hid-sensor-trigger module. The above change works fine, if any of the sensors get built. However, when only the common hid-sensor-trigger module gets built (and none of the drivers), then the IIO_TRIGGERED_BUFFER symbol isn't selected/enforced. Previously, each driver would enforce/select the IIO_TRIGGERED_BUFFER symbol. With this change the HID_SENSOR_IIO_TRIGGER (for the hid-sensor-trigger module) will enforce that IIO_TRIGGERED_BUFFER gets selected. All HID sensor drivers select the HID_SENSOR_IIO_TRIGGER symbol. So, this change removes the IIO_TRIGGERED_BUFFER enforcement from each driver. Fixes: 067fda1c065ff ("iio: hid-sensors: move triggered buffer setup into hid_sensor_setup_trigger") Reported-by: Thomas Deutschmann Cc: Srinivas Pandruvada Signed-off-by: Alexandru Ardelean Acked-by: Srinivas Pandruvada Link: https://lore.kernel.org/r/20210414084955.260117-1-aardelean@deviqon.com Signed-off-by: Jonathan Cameron

iio: light: gp2ap002: Fix rumtime PM imbalance on error

2021-05-10T13:01:48Z

When devm_request_threaded_irq() fails, we should decrease the runtime PM counter to keep the counter balanced. But when iio_device_register() fails, we need not to decrease it because we have already decreased it before. Signed-off-by: Dinghao Liu Reviewed-by: Linus Walleij Fixes: 97d642e23037 ("iio: light: Add a driver for Sharp GP2AP002x00F") Link: https://lore.kernel.org/r/20210407034927.16882-1-dinghao.liu@zju.edu.cn Signed-off-by: Jonathan Cameron

Merge tag 'acpi-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

2021-04-26T22:03:23Z

Pull ACPI updates from Rafael Wysocki: "These update the ACPICA code in the kernel to the most recent upstream revision including (but not limited to) new material introduced in the 6.4 version of the spec, update message printing in the ACPI-related code, address a few issues and clean up code in a number of places. Specifics: - Update ACPICA code in the kernel to upstream revision 20210331 including the following changes: * Add parsing for IVRS IVHD 40h and device entry F0h (Alexander Monakov). * Add new CEDT table for CXL 2.0 and iASL support for it (Ben Widawsky, Bob Moore). * NFIT: add Location Cookie field (Bob Moore). * HMAT: add new fields/flags (Bob Moore). * Add new flags in SRAT (Bob Moore). * PMTT: add new fields/structures (Bob Moore). * Add CSI2Bus resource template (Bob Moore). * iASL: Decode subtable type field for VIOT (Bob Moore). * Fix various typos and spelling mistakes (Colin Ian King). * Add new predefined objects _BPC, _BPS, and _BPT (Erik Kaneda). * Add USB4 capabilities UUID (Erik Kaneda). * Add CXL ACPI device ID and _CBR object (Erik Kaneda). * MADT: add Multiprocessor Wakeup Structure (Erik Kaneda). * PCCT: add support for subtable type 5 (Erik Kaneda). * PPTT: add new version of subtable type 1 (Erik Kaneda). * Add SDEV secure access components (Erik Kaneda). * Add support for PHAT table (Erik Kaneda). * iASL: Add definitions for the VIOT table (Jean-Philippe Brucker). * acpisrc: Add missing conversion for VIOT support (Jean-Philippe Brucker). * IORT: Updates for revision E.b (Shameer Kolothum). - Rearrange message printing in ACPI-related code to avoid using the ACPICA's internal message printing macros outside ACPICA and do some related code cleanups (Rafael Wysocki). - Modify the device enumeration code to turn off all of the unused ACPI power resources at the end (Rafael Wysocki). - Change the ACPI power resources handling code to turn off unused ACPI power resources without checking their status which should not be necessary by the spec (Rafael Wysocki). - Add empty stubs for CPPC-related functions to be used when CONFIG_ACPI_CPPC_LIB is not set (Rafael Wysocki). - Simplify device enumeration code (Rafael Wysocki). - Change device enumeration code to use match_string() for string matching (Andy Shevchenko). - Modify irqresource_disabled() to retain the resouce flags that have been set already (Angela Czubak). - Add native backlight whitelist entry for GA401/GA502/GA503 (Luke Jones). - Modify the ACPI backlight driver to let the native backlight handling take over on hardware-reduced systems (Hans de Goede). - Introduce acpi_dev_get() and switch over the ACPI core code to using it (Andy Shevchenko). - Use kobj_attribute as callback argument instead of a local struct type in the CPPC linrary code (Nathan Chancellor). - Drop unneeded initializatio of a static variable from the ACPI processor driver (Tian Tao). - Drop unnecessary local variable assignment from the ACPI APEI code (Colin Ian King). - Document for_each_acpi_dev_match() macro (Andy Shevchenko). - Address assorted coding style issues in multiple places (Xiaofei Tan). - Capitalize TLAs in a few comments (Andy Shevchenko). - Correct assorted typos in comments (Tom Saeger)" * tag 'acpi-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (68 commits) ACPI: video: use native backlight for GA401/GA502/GA503 ACPI: APEI: remove redundant assignment to variable rc ACPI: utils: Capitalize abbreviations in the comments ACPI: utils: Document for_each_acpi_dev_match() macro ACPI: bus: Introduce acpi_dev_get() and reuse it in ACPI code ACPI: scan: Utilize match_string() API resource: Prevent irqresource_disabled() from erasing flags ACPI: CPPC: Replace cppc_attr with kobj_attribute ACPI: scan: Call acpi_get_object_info() from acpi_set_pnp_ids() ACPI: scan: Drop sta argument from acpi_init_device_object() ACPI: scan: Drop sta argument from acpi_add_single_object() ACPI: scan: Rearrange checks in acpi_bus_check_add() ACPI: scan: Fold acpi_bus_type_and_status() into its caller ACPI: video: Check LCD flag on ACPI-reduced-hardware devices ACPI: utils: Add acpi_reduced_hardware() helper ACPI: dock: fix some coding style issues ACPI: sysfs: fix some coding style issues ACPI: PM: add a missed blank line after declarations ACPI: custom_method: fix a coding style issue ACPI: CPPC: fix some coding style issues ...

Merge branch 'acpi-messages'

2021-04-26T15:03:22Z

* acpi-messages: hwmon: acpi_power_meter: Get rid of ACPICA message printing IIO: acpi-als: Get rid of ACPICA message printing ACPI: utils: Introduce acpi_evaluation_failure_warn() ACPI: Drop unused ACPI_*_COMPONENT definitions and update documentation ACPI: sysfs: Get rid of ACPICA message printing

Merge tag 'iio-for-5.13a' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

2021-03-26T11:09:47Z

Jonathan writes: 1st set of IIO/counter device support, features and cleanup in the 5.13 cycle Big set in here from Alexandru Ardelean enabling multiple buffer support. This includes providing a new directory per buffer that combines what was previously in buffer/ and scan_elements/. Old interfaces still in place for compatiblity. Note immuatable branch for scmi patches to allow for some significant rework going on in that subsystem. Merge required updating to reflect some changes in IIO. Late rebase to fix some wrong fixes tags due to some earlier rebases made necessary by messing up the immutable branch. IIO New Device Support * adi,ad5686 - Add info to support AD5673R and AD5677R * bosch,bmi088 - New driver supporting this accelerometer + gyroscope * cros_ec_mkbp - New driver for this proximity sensor that exposes a 'front' sensor. Very simple switch like device, but driver allows it to share interface with more sophisticated proximity sensors. * iio_scmi - New driver to support ARM SCMI protocol to expose underlying accelerometers and gyroscopes via this firmware interface. * st,st_magn - Add ID for IISMDC magnetometer. * ti,ads131e0 - New driver supporting ads131e04, ads131e06 and ads131e08 24 bit ADCs Counter New Device Support * IRQ or GPIO based counter - New driver for a conceptually simple counter that uses interrupts to perform the count. Features * core - Dual buffer supprt including: Various helpers to centralize handling of bufferer related elements. Document existing and new IOCTLs Register the IIO chrdev only if it can actually be used for anything. Rework attribute group creation in the core (lots of patches) Merge buffer/ and scan_elements/ entries into one list + maintain backwards compatible set. Introduce the internal logic and IOCTL to allow multiple buffers + access to an anon FD per buffer to actually read from it. Tidy up tools/iio/iio_generic_buffer and switch to new interfaces. Update ABI docs. A few follow up fixes, unsuprising as this was a huge bit of rework. - Move common case setting of trig->parent to the core. - Provide an iio_read_channel_processed_scale() to avoid loss of precision from iio_read_channel_processed() then applying integer scale. Use it in ntc_thermistor driver in hwmon. - Allow drivers to specify labels from elsewhere than DT. Use it for bmc150 and kxcjk-1013 labels related to position on 2 in one tablets. - Document label usage for proximity and accelerometer sensors. - Some local variable renames for consistency tools - Add -a parameter to iio_event_monitor to allow autoenabling of events. * acpi_als - Add trigger support for devices that don't support notification method. * adi,ad7124 - Allow more than 8 channels. This is a complex little device, but is capable of supporting up to 16 channels if the share certain configuration settings. * hrtimer-trigger - Support sampling frequency below 1Hz. * mediatek,mt8195-auxadc - Add compatible to binding docs (always also includes mt8173) * st,stm32-adc - Enable timetamps when not using DMA. * vishay,vcnl3020 - Sampling frequency control. Cleanup and minor fixes: * treewide - Use some getter and setter functions instead of opencoding. - Set of fixes for pointless casts in various drivers. - Avoid wrong kernel-doc marking on comment blocks. - Fix various other minor kernel-doc issues shown by W=1 * core - Use a signed temporary for IIO_VAL_FRACTIONAL_LOG2 to avoid odd casts. - Fix IIO_VAL_FRACTIONAL_LOG2 for values between -1.0 and 0.0 - Add unit tests for iio_format_value() * docs - Fix formatting/typos in iio_configfs.rst and buffers.rst - Add documentation of index in buffers.rst - Fix scan element description - Avoid some issues with HTML generation from ABI docs by moving duplicated defintions to more generic files. - Drop reference to long dead mailing list. * 104-quad - Remove left over deprecated IIO counter ABI. * adi,adi-axi-adc - Fix wrong bit of docs. * adi,ad5791 - Typos * adi,ad9834 - Switch to device managed functions in probe. * adi,adis* - Add and use helpers for locking to reduced duplication. * adi,adis16480 - Fix calculation of sampling frequency when using pulse per second input. * adi,adis16475 - Calculate the IMU scaled internal sampling rate and runtime depending on sysfs based configuration rather than getting from DT. Drop now unnecessary property from DT bindings doc. * cros_ec - Fix result of a series of recent changes that means extended buffer attributes turn up in the wrong place. Too complex to revert the various patches unfortunately so this is a bit messy. * fsl,mma3452 - Indentation cleanup. * hid-sensors - Size of storage needs to increase for some parts when using quaternions. - Move the get sensistivity attribute to hid-sensors-common to reduce duplication. Enable it for more device types. - Correctly handle relative sensitivity if reported that way including documenting the new ABI. * maxim,max517 - Use device managed functions in probe. * mediatek,mt6360-adc - Use asm/unaligned.h instead of directly including unaligned/be_byteshift.h * novuton,npcm-adc - Local lock instead of missusing mlock. * semtech,sx9500 - Typos * st,sensor - typo fix * st,spear-adc - Local lock instead of missusing mlock. * st,stm32-adc - Long standing HAS_IOMEM dependency fix. * st,stm32-counter - Remove left over deprecated IIO counter ABI. * ti,palmas-adc - Local lock instead of missusing mlock. * ti,tmp007 - Switch to device managed functions in probe. Other * MAINTAINERS - Move Peter Meerwald-Stadler to Credits at his request * tag 'iio-for-5.13a' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (119 commits) iio: acpi_als: Add trigger support iio: acpi_als: Add local variable dev in probe iio: acpi_als: Add timestamp channel iio: adc: ad7292: Modify the bool initialization assignment iio: cros: unify hw fifo attributes without API changes iio: kfifo: add devm_iio_triggered_buffer_setup_ext variant iio: event_monitor: Enable events before monitoring dt-bindings: iio: adc: Add compatible for Mediatek MT8195 iio:magnetometer: Add Support for ST IIS2MDC dt-bindings: iio: st,st-sensors add IIS2MDC. staging: iio: ad9832: kernel-doc fixes iio:dac:max517.c: Use devm_iio_device_register() iio:cros_ec_sensors: Fix a wrong function name in kernel doc. iio: buffer: kfifo_buf: kernel-doc, typo in function name. iio: accel: sca3000: kernel-doc fixes. Missing - and wrong function names. iio: adc: adi-axi-adc: Drop false marking for kernel-doc iio: adc: cpcap-adc: kernel-doc fix - that should be _ in structure name iio: dac: ad5504: fix wrong part number in kernel-doc structure name. iio: dac: ad5770r: kernel-doc fix case of letter R wrong in structure name iio: adc: ti-adc084s021: kernel-doc fixes, missing function names ...

iio: acpi_als: Add trigger support

2021-03-25T19:13:52Z

As some firmware does not notify on illuminance changes, add a trigger to be able to query light via software (sysfs-trigger or hrtrigger). Add a hardware trigger set as the default trigger to maintain backward compatibility. Check iio_info reports the sensor as buffer capable: iio:device0: acpi-als (buffer capable) To test, check we can get data on demand on an Intel based chromebook: IIO_DEV="iio:device0" echo 1 > iio_sysfs_trigger/add_trigger cat trigger2/name > ${IIO_DEV}/trigger/current_trigger for i in ${IIO_DEV}/scan_elements/*_en ${IIO_DEV}/buffer/enable ; do echo 1 > $i done od -x /dev/${IIO_DEV} & echo 1 > trigger2/trigger_now Signed-off-by: Gwendal Grignou Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20210317074012.2336454-4-gwendal@chromium.org Signed-off-by: Jonathan Cameron

iio: acpi_als: Add local variable dev in probe

2021-03-25T19:13:52Z

Use dev = &device->dev in probe routine for clarity. Signed-off-by: Gwendal Grignou Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20210317074012.2336454-3-gwendal@chromium.org Signed-off-by: Jonathan Cameron

iio: acpi_als: Add timestamp channel

2021-03-25T19:13:52Z

Add timestamp channel in list of channel, to allow retrieving timestamps when events are produced. Signed-off-by: Gwendal Grignou Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20210317074012.2336454-2-gwendal@chromium.org Signed-off-by: Jonathan Cameron

iio: cros: unify hw fifo attributes without API changes

2021-03-25T19:13:52Z

Commit 2e2366c2d141 ("iio: cros_ec: unify hw fifo attributes into the core file") should be reverted as it set buffer extended attributes at the wrong place. However, to revert it will requires to revert more commits: commit 165aea80e2e2 ("iio: cros_ec: use devm_iio_triggered_buffer_setup_ext()") commit 21232b4456ba ("iio: buffer: remove iio_buffer_set_attrs() helper")). and we would still have conflict with more recent development. commit ee708e6baacd ("iio: buffer: introduce support for attaching more IIO buffers") Instead, this commit reverts the first 2 commits without re-adding iio_buffer_set_attrs() and set the buffer extended attributes at the right place: 1. Instead of adding has_fw_fifo, deduct it from the configuration: - EC must support FIFO (EC_FEATURE_MOTION_SENSE_FIFO) set. - sensors send data a regular interval (accelerometer, gyro, magnetomer, barometer, light sensor). - "Legacy accelerometer" is only present on EC without FIFO, so we don't need to set buffer attributes. 2. devm_iio_triggered_buffer_setup_ext() does not need to be called when EC does not support FIFO, as there is no FIFO to manage. 3. Use devm_iio_triggered_buffer_setup_ext() when EC has a FIFO to specify the buffer extended attributes. Fixes: 2e2366c2d141 ("iio: cros_ec: unify hw fifo attributes into the core file") Fixes: 165aea80e2e2 ("iio: cros_ec: use devm_iio_triggered_buffer_setup_ext()") Signed-off-by: Gwendal Grignou Reviewed-by: Alexandru Ardelean Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20210318184857.2679181-1-gwendal@chromium.org Signed-off-by: Jonathan Cameron