user/sven/linux.git/drivers/mfd/syscon.c, branch v4.19.170

mfd: syscon: Set name of regmap_config

2018-05-16T08:21:48Z

We are now allowing to register debugfs without a valid device, and not having a valid name will end up using "dummy*" to create debugfs dir. Signed-off-by: Jeffy Chen Signed-off-by: Lee Jones

mfd: syscon: Set regmap name to DT node name

2018-05-16T08:21:48Z

This sets the regmap name to the device tree node name. This is useful for debugging. Signed-off-by: David Lechner Acked-by: Arnd Bergmann Signed-off-by: Lee Jones

mfd: syscon: Add hardware spinlock support

2018-01-12T18:32:55Z

Some system control registers need hardware spinlock to synchronize between the multiple subsystems, so we should add hardware spinlock support for syscon. Signed-off-by: Baolin Wang Acked-by: Rob Herring Acked-by: Lee Jones Signed-off-by: Mark Brown

mfd: syscon: Support native-endian regmaps

2016-11-25T10:04:31Z

The regmap devicetree binding documentation states that a native-endian property should be supported as well as big-endian & little-endian, however syscon in its duplication of the parsing of these properties omits support for native-endian. Fix this by setting REGMAP_ENDIAN_NATIVE when a native-endian property is found. Signed-off-by: Paul Burton Cc: Lee Jones Cc: Arnd Bergmann Cc: Guenter Roeck Cc: Ralf Baechle Cc: linux-mips@linux-mips.org Signed-off-by: Lee Jones

mfd: syscon: Make syscon_regmap_config const

2016-03-16T08:50:18Z

syscon_regmap_config can be made const if syscon_probe() creates a local copy on the stack, just like syscon_register() does. Signed-off-by: Philipp Zabel Signed-off-by: Lee Jones

mfd: syscon: Set regmap max_register in of_syscon_register

2016-03-16T08:50:17Z

Determine the regmap max_register configuration from the io resource size and the reg-io-width device tree property. Signed-off-by: Philipp Zabel Acked-by: Arnd Bergmann Signed-off-by: Lee Jones

mfd: syscon: Add a DT property to set value width

2016-01-11T06:08:02Z

Currently syscon has a fixed configuration of 32 bits for register and values widths. In some cases, it would be desirable to be able to customize the value width. For example, certain boards (like the ones manufactured by Technologic Systems) have a FPGA that is memory-mapped, but its registers are only 16-bit wide. This patch adds an optional "reg-io-width" DT binding for syscon that allows to change the width for the data bus (i.e. val_bits). If this property is provided, it will also set the register stride to reg-io-width's value. If not provided, the default configuration is used. Signed-off-by: Damien Riegel Acked-by: Rob Herring Acked-by: Arnd Bergmann Signed-off-by: Lee Jones

Merge tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

2014-12-15T00:10:09Z

Pull driver core update from Greg KH: "Here's the set of driver core patches for 3.19-rc1. They are dominated by the removal of the .owner field in platform drivers. They touch a lot of files, but they are "simple" changes, just removing a line in a structure. Other than that, a few minor driver core and debugfs changes. There are some ath9k patches coming in through this tree that have been acked by the wireless maintainers as they relied on the debugfs changes. Everything has been in linux-next for a while" * tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits) Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries" fs: debugfs: add forward declaration for struct device type firmware class: Deletion of an unnecessary check before the function call "vunmap" firmware loader: fix hung task warning dump devcoredump: provide a one-way disable function device: Add dev__once variants ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries ath: use seq_file api for ath9k debugfs files debugfs: add helper function to create device related seq_file drivers/base: cacheinfo: remove noisy error boot message Revert "core: platform: add warning if driver has no owner" drivers: base: support cpu cache information interface to userspace via sysfs drivers: base: add cpu_device_create to support per-cpu devices topology: replace custom attribute macros with standard DEVICE_ATTR* cpumask: factor out show_cpumap into separate helper function driver core: Fix unbalanced device reference in drivers_probe driver core: fix race with userland in device_add() sysfs/kernfs: make read requests on pre-alloc files use the buffer. sysfs/kernfs: allow attributes to request write buffer be pre-allocated. fs: sysfs: return EGBIG on write if offset is larger than file size ...

mfd: syscon: Decouple syscon interface from platform devices

2014-11-25T16:18:41Z

Currently a syscon entity can be only registered directly through a platform device that binds to a dedicated syscon driver. However in certain use cases it is desirable to make a device used with another driver a syscon interface provider. For example, certain SoCs (e.g. Exynos) contain system controller blocks which perform various functions such as power domain control, CPU power management, low power mode control, but in addition contain certain IP integration glue, such as various signal masks, coprocessor power control, etc. In such case, there is a need to have a dedicated driver for such system controller but also share registers with other drivers. The latter is where the syscon interface is helpful. In case of DT based platforms, this patch decouples syscon object from syscon platform driver, and allows to create syscon objects first time when it is required by calling of syscon_regmap_lookup_by APIs and keep a list of such syscon objects along with syscon provider device_nodes and regmap handles. For non-DT based platforms, this patch keeps syscon platform driver structure so that syscon can be probed and such non-DT based drivers can use syscon_regmap_lookup_by_pdev API and access regmap handles. Once all users of "syscon_regmap_lookup_by_pdev" migrated to DT based, we can completely remove platform driver of syscon, and keep only helper functions to get regmap handles. Suggested-by: Arnd Bergmann Suggested-by: Tomasz Figa Tested-by: Vivek Gautam Tested-by: Javier Martinez Canillas Signed-off-by: Pankaj Dubey Reviewed-by: Arnd Bergmann Tested-by: Heiko Stuebner Reviewed-by: Heiko Stuebner Signed-off-by: Lee Jones

mfd: drop owner assignment from platform_drivers

2014-10-20T14:20:53Z

A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang