kernel/git/stable/linux-stable.git/drivers/iio/light, branch linux-5.17.y

Merge tag 'iio-for-5.17a' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into char-misc-next

2021-12-22T11:33:01+00:00

Jonathan writes: 1st set of IIO new device support, features and cleanup for 5.17 Includes some fixes that were either late breaking, low priority or complex enough to not be good to rush in late in the cycle. Tree rebased today to fix up some trivial issues + pull in a fix that was previously on the fixes-togreg branch. Vast majority have been in linux-next for some time now. New device support * adi,ad7293 - New driver and bindings for this Power Amplifier drain current controller. A complex device with various related monitoring functions. * adi,ad75513R - New driver and bindings for this combined ADC and DAC device. - A few follow up fixes. * adi,admv8818 - New driver (and type) for this 2-18GHz filter device. Includes bindings and ABI documentation to allow clk_notifier based auto adjustment of the filters in appropriate applications. * liteon,ltr501 - Support for the ltr303. ID and chip specific info table. * xilinx,ams - New generic firmware function fwnode_iomap() as used in this driver. - New driver and bindings for this ADC and on-chip sensors as found in various Xilinx devices. Core * Introduced IIO_VAL_INT_64 which uses val and val2 in IIO callbacks to form a 64 bit integer when higher precision needed. * Allow IIO_ENUM_AVAILABLE to be used with different shared values. * Fix a long term issue with scheduling whilst atomic when iio_trig_poll() is called but no trigger consumers are actually enabled and hence the trigger may be reenabled from the interrupt handler. Seen in the wild on the tsc2046. * Mark iio_device_type const. * buffer: Use a separate index variable to simplify code. * buffer-dma: Clear out unused struct iio_buffer_block * buffer-dmaengine: Switch to cheaper round_down() as power of 2 values. Tests/tools * format_value - Check against NULL returns from allocations in tests. - Add IIO_VAL_INT_64 test case. * event_monitor - Flush the output after event to given more consistent latency when tool output piped to other programs. Driver Features * axp20x - Add support for NTC thermistor channel and document TS pin binding. * arm,scmi - Add reading of raw channel values (using IIO_VAL_INT_64) * liteon,ltr501 - Add proximity-near-level support and dt-binding. Tree wide cleanup * Remove no-op trigger ops from multiple drivers. * Stop using dev_get_drvdata() on the iio_dev->dev in various drivers and then stop assigning it to allow this to be used for other purposes. We can always get to the indio_dev using dev_to_iio_dev() which is a container_of() based approach. Also cleanup up some related unnecessary convoluted cases. - atmel,at91-sam5d2 - nxp,imx7d - meas,ms5611 - st,st_sensors * Where available (or easy to introduce) use the scan_type.* values in place of a second copy for read_raw and similar paths. - adi,ad7266 - bosch,bma220 - fsl,mac3110 - fsl,mma7455 - fsl,mpl3115 - kionix,kcjk-1013 - sensortek,stk8ba50 - sensortek,stk8312 - ti,adc12138 - ti,ads1015 - vti,sca3000 - xilinx,xadc-core * Switch drives over to generic firmware properties including appropriate header changes to avoid including of.h - Various DACs had false CONFIG_OF dependencies. - dpot-dac - envelope-detector - adi,ad5755 - adi,ad5758 - capella,cm3605 - maxim,max9611 - microchip,mcp41010 - microchip,mcp3911 - ti,adc12138 * Trivial clang warning fixes for W=1 warnings. Driver specific cleanup and minor fixes * adi,ad7606 - Comment fixes. * ams,ad3935 - Drop pointless cast to the same type. * atmel,at91-sama5d2 - Fix wrong cast of iio_dev->dev to platform_device that happened to be harmless. * fsl,mma7660 - Stop i2c remove() function returning an error code. Part of a rework to eventually stop returning anything from these. * fsl,mma8452 - Use correct type for local irqreturn_t. * nxp,imx8mq - Maintainer email address update. * nxp,lpc18xx_adc - Ensure clk_prepare_enable() called before clk_get_rate(). - Switch of.h for mod_devicetable.h to reflect no of specific functions, just the id table. * renesas,rzg2l - Drop a dev_err() that just duplicates error printed in platform_get_irq() * sgx,vz89x - Drop pointless cast. * st,lsm6dsx - Make it possible to disable the sensorhub from DT to avoid a corner case where the address of a slave device many be accidentally modified. * st,stm32-adc - Stop leaking an of_node in an error path. * st,stmp2 - Avoid wrong sized type for bit field which could result in over-reading (harmless). Precursor to enabling -Warray-bounds. * ti,adc081c - Put back some ACPI support for non standards compliant ADC081C ID because it is known to be in the wild on some Aaeon boards. * ti,ads8688 - Cleanup redundant local ret variable assignment. * ti,ina2xx-adc - Use helper macro kthread_run() to replace some boilerplate. - Avoid double reference counting. - Drop pointless cast. * xilinx,xadc - Make the IRQ optional as not always wired to the host system. * tag 'iio-for-5.17a' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (103 commits) iio: adc: ti-adc081c: Partial revert of removal of ACPI IDs iio:addac:ad74413r: Fix uninitialized ret in a path that won't be hit. MAINTAINERS: Add maintainer for xilinx-ams dt-bindings: iio: adc: Add Xilinx AMS binding documentation iio: adc: Add Xilinx AMS driver device property: Add fwnode_iomap() iio:accel:kxcjk-1013: Mark struct __maybe_unused to avoid warning. iio:accel:bmc150: Mark structure __maybe_unused as only needed with for pm ops. iio:dummy: Drop set but unused variable len. iio:magn:ak8975: Suppress clang W=1 warning about pointer to enum conversion. iio:imu:inv_mpu6050: Suppress clang W=1 warning about pointer to enum conversion. iio:imu:inv_icm42600: Suppress clang W=1 warning about pointer to enum conversion. iio:dac:mcp4725: Suppress clang W=1 warning about pointer to enum conversion. iio:amplifiers:hmc425a: Suppress clang W=1 warning about pointer to enum conversion. iio:adc:ti-ads1015: Suppress clang W=1 warning about pointer to enum conversion. iio:adc:rcar: Suppress clang W=1 warning about pointer to enum conversion. iio:adc:ina2xx-adc: Suppress clang W=1 warning about pointer to enum conversion. iio:accel:bma180: Suppress clang W=1 warning about pointer to enum conversion. drivers:iio:dac: Add AD3552R driver support dt-bindings: iio: dac: Add adi,ad3552r.yaml ...

iio:light:cm3605: Switch to generic firmware properties.

2021-12-12T17:12:50+00:00

This enables use of other firmware types with minimal driver changes. Part of an ongoing effort to move all IIO drivers over to generic accessors in order to reduce the chance of of_* versions being copied into new drivers. Also updated the headers to reflect this change including using mod_devicetable.h for struct of_device_id definition rather than going via of.h Signed-off-by: Jonathan Cameron Reviewed-by: Linus Walleij Reviewed-by: Andy Shevchenko

iio: ltr501: Export near level property for proximity sensor

2021-12-04T15:34:18+00:00

Userspace tools like iio-sensor-proxy need to know the proximity level that should be considered "near". This value is hardware-specific and can be defined via the devicetree. Allow the driver to export the near level. Signed-off-by: Nikita Travkin Link: https://lore.kernel.org/r/20211125125646.54831-2-nikita@trvn.ru Signed-off-by: Jonathan Cameron

iio: stk3310: Don't return error code in interrupt handler

2021-11-17T17:52:34+00:00

Interrupt handlers must return one of the irqreturn_t values. Returning a error code is not supported. The stk3310 event interrupt handler returns an error code when reading the flags register fails. Fix the implementation to always return an irqreturn_t value. Fixes: 3dd477acbdd1 ("iio: light: Add threshold interrupt support for STK3310") Signed-off-by: Lars-Peter Clausen Link: https://lore.kernel.org/r/20211024171251.22896-3-lars@metafoo.de Cc: Signed-off-by: Jonathan Cameron

iio: ltr501: Don't return error code in trigger handler

2021-11-17T17:52:33+00:00

IIO trigger handlers need to return one of the irqreturn_t values. Returning an error code is not supported. The ltr501 interrupt handler gets this right for most error paths, but there is one case where it returns the error code. In addition for this particular case the trigger handler does not call `iio_trigger_notify_done()`. Which when not done keeps the triggered disabled forever. Modify the code so that the function returns a valid irqreturn_t value as well as calling `iio_trigger_notify_done()` on all exit paths. Fixes: 2690be905123 ("iio: Add Lite-On ltr501 ambient light / proximity sensor driver") Signed-off-by: Lars-Peter Clausen Link: https://lore.kernel.org/r/20211024171251.22896-1-lars@metafoo.de Cc: Signed-off-by: Jonathan Cameron

iio: light: ltr501: Added ltr303 driver support

2021-11-17T17:51:45+00:00

Previously ltr501 driver supported a number of light and, proximity sensors including ltr501, ltr559 and ltr301. This adds support for another light sensor ltr303 used in Seeed Studio reTerminal, a carrier board for Raspberry Pi 4 CM. Signed-off-by: Maslov Dmitry Link: https://lore.kernel.org/r/20211106174137.6783-1-maslovdmitry@seeed.cc Signed-off-by: Jonathan Cameron

iio: gp2ap020a00f: Remove no-op trigger ops

2021-11-17T17:51:38+00:00

The IIO core handles a trigger ops with all NULL callbacks the same as if the trigger ops itself was NULL. Remove the empty trigger ops from the interrupt trigger driver to slightly reduce the boilerplate code. Object size of the driver module is also slightly reduced. Signed-off-by: Lars-Peter Clausen Link: https://lore.kernel.org/r/20211031142130.20791-8-lars@metafoo.de Signed-off-by: Jonathan Cameron

iio: light: gp2ap002: Make use of the helper function dev_err_probe()

2021-10-20T13:43:53+00:00

When possible use dev_err_probe help to properly deal with the PROBE_DEFER error, the benefit is that DEFER issue will be logged in the devices_deferred debugfs file. Using dev_err_probe() can reduce code size, and the error value gets printed. Signed-off-by: Cai Huoqing Link: https://lore.kernel.org/r/20211008092656.421-3-caihuoqing@baidu.com Signed-off-by: Jonathan Cameron

iio: light: cm3605: Make use of the helper function dev_err_probe()

2021-10-20T13:43:53+00:00

When possible use dev_err_probe help to properly deal with the PROBE_DEFER error, the benefit is that DEFER issue will be logged in the devices_deferred debugfs file. Using dev_err_probe() can reduce code size, and the error value gets printed. Signed-off-by: Cai Huoqing Reviewed-by: Linus Walleij Link: https://lore.kernel.org/r/20211008092656.421-1-caihuoqing@baidu.com Signed-off-by: Jonathan Cameron

iio: light: ltr501: Add of_device_id table

2021-10-20T13:43:51+00:00

Add of_device_id table so the driver can be used on DT platforms without relying on i2c_device_id fallback. (So DT schema validation is possible) Signed-off-by: Nikita Travkin Link: https://lore.kernel.org/r/20211006163058.145842-4-nikita@trvn.ru Signed-off-by: Jonathan Cameron