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3ce868bb05
linux/drivers/iio/accel
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Alexandru Ardelean 3ce868bb05 iio: accel: bma220: make suspend state setting more robust 
The datasheet mentions that the suspend mode is toggled by reading the
suspend register. The reading returns value 0xFF if the system was in
suspend mode, otherwise it returns value 0x00.

The bma220_deinit() function does up to 2 reads, in case the device was in
suspend mode, which suggests a level of paranoia that makes the logic in
bma220_suspend() and bma220_resume() look insufficient.

This change implements a bma220_power() function which does up to 2 reads
of the suspend register to make sure that the chip enters a desired
(suspended or normal) mode.

If the transition fails, then -EBUSY is returned.

Since only a reference to SPI device is required, we can remove the
spi_set_drvdata() call and get the SPI device object from the base device
object in the suspend/resume routines.

Signed-off-by: Alexandru Ardelean <aardelean@deviqon.com>
Link: https://lore.kernel.org/r/20210625140137.362282-2-aardelean@deviqon.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-07-19 09:51:59 +01:00
..
adis16201.c iio: adis: Cleanout unused headers 2021-06-04 09:28:10 +01:00
adis16209.c iio: adis: Cleanout unused headers 2021-06-04 09:28:10 +01:00
adxl345_core.c Replace HTTP links with HTTPS ones: drivers/iio 2020-07-13 15:05:59 +01:00
adxl345_i2c.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 330 2019-06-05 17:37:06 +02:00
adxl345_spi.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 330 2019-06-05 17:37:06 +02:00
adxl345.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 330 2019-06-05 17:37:06 +02:00
adxl372_i2c.c iio: adxl372_i2c: Add OF device ID table 2020-08-22 10:53:16 +01:00
adxl372_spi.c iio: adxl372_spi: change indentation for of_table 2020-08-22 10:53:15 +01:00
adxl372.c iio: core: move @id from struct iio_dev to struct iio_dev_opaque 2021-05-17 13:49:13 +01:00
adxl372.h iio: adxl372: Add support for I2C communication 2018-09-08 15:54:38 +01:00
bma180.c iio: accel: bma180/bmc150: Move BMA254 to bmc150-accel driver 2021-06-13 17:00:18 +01:00
bma220_spi.c iio: accel: bma220: make suspend state setting more robust 2021-07-19 09:51:59 +01:00
bma400_core.c iio: Drop Duplicated "mount-matrix" parameter 2021-06-03 18:24:13 +01:00
bma400_i2c.c iio: accel: Add driver for the BMA400 2019-12-29 15:20:02 +00:00
bma400_spi.c iio: accel: bma400: add support for bma400 spi 2020-06-14 11:49:16 +01:00
bma400.h iio: accel: bma400: basic regulator support 2019-12-29 15:20:02 +00:00
bmc150-accel-core.c iio: accel: bmc150: Use more consistent and accurate scale values 2021-06-16 14:53:13 +01:00
bmc150-accel-i2c.c iio: accel: bma180/bmc150: Move BMA254 to bmc150-accel driver 2021-06-13 17:00:18 +01:00
bmc150-accel-spi.c iio: accel: bmc150: Add device IDs for BMA253 2021-06-13 17:00:17 +01:00
bmc150-accel.h iio: accel: bmc150: Drop misleading/duplicate chip identifiers 2021-06-13 17:00:17 +01:00
bmi088-accel-core.c iio: accel: bmi088: Balance runtime pm + use pm_runtime_resume_and_get() 2021-05-17 13:54:27 +01:00
bmi088-accel-spi.c iio: accel: Add support for the Bosch-Sensortec BMI088 2021-03-11 20:46:58 +00:00
bmi088-accel.h iio: accel: Add support for the Bosch-Sensortec BMI088 2021-03-11 20:46:58 +00:00
cros_ec_accel_legacy.c iio: cros: unify hw fifo attributes without API changes 2021-03-25 19:13:52 +00:00
da280.c iio: accel: da280: convert probe to device-managed functions 2021-07-17 18:57:55 +01:00
da311.c iio: accel: da311: convert probe to device-managed functions 2021-07-17 18:53:53 +01:00
dmard06.c iio: remove explicit IIO device parent assignment 2020-06-14 11:49:59 +01:00
dmard09.c iio: remove explicit IIO device parent assignment 2020-06-14 11:49:59 +01:00
dmard10.c iio: accel: dmard10: convert probe to device-managed functions 2021-07-17 18:52:52 +01:00
fxls8962af-core.c iio: Drop Duplicated "mount-matrix" parameter 2021-06-03 18:24:13 +01:00
fxls8962af-i2c.c iio: accel: add support for FXLS8962AF/FXLS8964AF accelerometers 2021-05-17 13:54:23 +01:00
fxls8962af-spi.c iio: accel: add support for FXLS8962AF/FXLS8964AF accelerometers 2021-05-17 13:54:23 +01:00
fxls8962af.h iio: accel: add support for FXLS8962AF/FXLS8964AF accelerometers 2021-05-17 13:54:23 +01:00
hid-sensor-accel-3d.c iio: hid-sensors: bind IIO channels alloc to device object 2021-07-13 18:21:53 +01:00
Kconfig iio: accel: bma180/bmc150: Move BMA254 to bmc150-accel driver 2021-06-13 17:00:18 +01:00
kxcjk-1013.c iio: Drop Duplicated "mount-matrix" parameter 2021-06-03 18:24:13 +01:00
kxsd9-i2c.c iio: accel: kxsd9-i2c: Use mod_devicetable.h and drop of_match_ptr macro 2020-04-25 15:31:34 +01:00
kxsd9-spi.c Merge 5.2-rc3 into staging-next 2019-06-03 07:27:16 +02:00
kxsd9.c iio: Drop Duplicated "mount-matrix" parameter 2021-06-03 18:24:13 +01:00
kxsd9.h
Makefile iio: accel: add support for FXLS8962AF/FXLS8964AF accelerometers 2021-05-17 13:54:23 +01:00
mc3230.c iio: Remove kernel-doc keyword in file header comment 2021-03-25 19:13:49 +00:00
mma7455_core.c iio:accel:mma7455: Fix timestamp alignment and prevent data leak. 2020-08-22 11:38:52 +01:00
mma7455_i2c.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
mma7455_spi.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
mma7455.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
mma7660.c iio: Remove kernel-doc keyword in file header comment 2021-03-25 19:13:49 +00:00
mma8452.c iio: accel: mma8452: Balance runtime pm + use pm_runtime_resume_and_get() 2021-05-17 13:54:27 +01:00
mma9551_core.c iio: accel: mma9551/3: Balance untime pm + use pm_runtime_resume_and_get() 2021-05-17 13:54:25 +01:00
mma9551_core.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288 2019-06-05 17:36:37 +02:00
mma9551.c iio: accel: mma9551/3: Balance untime pm + use pm_runtime_resume_and_get() 2021-05-17 13:54:25 +01:00
mma9553.c iio: accel: mma9551/3: Balance untime pm + use pm_runtime_resume_and_get() 2021-05-17 13:54:25 +01:00
mxc4005.c iio: accel: mxc4005: Fix overread of data and alignment issue. 2021-05-17 13:54:28 +01:00
mxc6255.c iio: remove explicit IIO device parent assignment 2020-06-14 11:49:59 +01:00
sca3000.c iio: accel: sca3000: kernel-doc fixes. Missing - and wrong function names. 2021-03-25 19:13:51 +00:00
sca3300.c iio: accel: Add driver for Murata SCA3300 accelerometer 2021-05-17 13:49:09 +01:00
ssp_accel_sensor.c iio: make use of devm_iio_kfifo_buffer_setup() helper 2021-03-11 20:47:01 +00:00
st_accel_buffer.c iio: Move attach/detach of the poll func to the core 2020-06-20 17:34:44 +01:00
st_accel_core.c iio: accel: st_sensors: Stop copying channels 2021-06-03 18:24:13 +01:00
st_accel_i2c.c iio: st_sensors: Call st_sensors_power_enable() from bus drivers 2021-05-17 13:54:22 +01:00
st_accel_spi.c iio: st_sensors: Call st_sensors_power_enable() from bus drivers 2021-05-17 13:54:22 +01:00
st_accel.h iio: st_sensors: Make accel, gyro, magn and pressure probe shared 2021-05-17 13:54:22 +01:00
stk8ba50.c iio: accel: stk8ba50: Fix buffer alignment in iio_push_to_buffers_with_timestamp() 2021-05-17 13:54:28 +01:00
stk8312.c iio: accel: stk8312: Fix buffer alignment in iio_push_to_buffers_with_timestamp() 2021-05-17 13:54:28 +01:00