OpenCloudOS-Kernel/drivers/iio
Hans de Goede fa2849e964 iio: adc: axp288: Drop bogus AXP288_ADC_TS_PIN_CTRL register modifications
For some reason the axp288_adc driver was modifying the
AXP288_ADC_TS_PIN_CTRL register, changing bits 0-1 depending on
whether the GP_ADC channel or another channel was written.

These bits control when a bias current is send to the TS_PIN, the
GP_ADC has its own pin and a separate bit in another register to
control the bias current.

Not only does changing when to enable the TS_PIN bias current
(always or only when sampling) when reading the GP_ADC make no sense
at all, the code is modifying these bits is writing the entire register,
assuming that all the other bits have their default value.

So if the firmware has configured a different bias-current for either
pin, then that change gets clobbered by the write, likewise if the
firmware has set bit 2 to indicate that the battery has no thermal sensor,
this will get clobbered by the write.

This commit fixes all this, by simply removing all writes to the
AXP288_ADC_TS_PIN_CTRL register, they are not needed to read the
GP_ADC pin, and can actually be harmful.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-01-10 19:54:57 +00:00
..
accel iio:kfifo_buf header include push down. 2017-01-10 19:54:53 +00:00
adc iio: adc: axp288: Drop bogus AXP288_ADC_TS_PIN_CTRL register modifications 2017-01-10 19:54:57 +00:00
amplifiers spi: Updates for v4.4 2015-11-05 13:15:12 -08:00
buffer iio:buffer.h - split into buffer.h and buffer_impl.h 2017-01-10 19:54:55 +00:00
chemical iio:chemical:atlas-ph-sensor: Fix use of 32 bit int to hold 16 bit big endian value 2016-10-23 22:18:27 +01:00
common iio:kfifo_buf header include push down. 2017-01-10 19:54:53 +00:00
counter iio: 104-quad-8: Add IIO support for the ACCES 104-QUAD-8 2016-10-01 17:06:21 +01:00
dac iio: dac: ad5593r: Add ACPI support 2016-12-30 17:20:14 +00:00
dummy iio:dummy: Stop enabling timestamp by default. 2017-01-10 19:54:55 +00:00
frequency iio: frequency: ad9523: use unsigned int rather then bare unsigned 2016-04-17 10:31:03 +01:00
gyro iio:kfifo_buf header include push down. 2017-01-10 19:54:53 +00:00
health First round of IIO new device support, features and cleanups for the 4.8 cycle. 2016-06-09 09:15:58 -07:00
humidity iio: humidity: Support acpi probe for hts211 2016-12-03 08:56:28 +00:00
imu iio: bmi160: Add of device table for spi 2016-12-30 10:38:19 +00:00
light iio: light: add driver for Capella CM3605 2016-12-30 17:17:39 +00:00
magnetometer iio: magnetometer: separate the values of attributes based on their usage type for HID compass sensor 2016-11-24 20:41:30 +00:00
orientation iio: orientation: hid-sensor-rotation: Add PM function (fix non working driver) 2016-11-05 17:47:47 +00:00
potentiometer iio: mcp4531: provide range of available raw values 2016-11-13 11:40:26 +00:00
potentiostat iio: potentiostat: add LMP91000 support 2016-09-27 20:33:03 +01:00
pressure iio: st_pressure: Export sampling frequency for lps25h and lps331ap 2016-12-30 11:33:56 +00:00
proximity iio: pulsedlight-lidar-lite-v2: add lidar-lite-v3 property 2016-12-31 15:18:31 +00:00
temperature iio: maxim_thermocouple: detect invalid storage size in read() 2016-11-13 10:08:32 +01:00
trigger iio:trigger: Experimental kthread tight loop trigger (thread only) 2016-06-03 13:18:44 +01:00
Kconfig iio: 104-quad-8: Add IIO support for the ACCES 104-QUAD-8 2016-10-01 17:06:21 +01:00
Makefile iio: 104-quad-8: Add IIO support for the ACCES 104-QUAD-8 2016-10-01 17:06:21 +01:00
iio_core.h iio:core: timestamping clock selection support 2016-06-30 19:41:38 +01:00
iio_core_trigger.h
industrialio-buffer.c iio:buffer.h - split into buffer.h and buffer_impl.h 2017-01-10 19:54:55 +00:00
industrialio-configfs.c iio:configfs: Introduce iio/configfs.h to provide a location for the configfs_subsystem 2015-12-05 16:25:30 +00:00
industrialio-core.c iio:buffer.h - split into buffer.h and buffer_impl.h 2017-01-10 19:54:55 +00:00
industrialio-event.c iio: iio_push_event(): Don't crash if the event interface is not registered 2016-09-10 16:40:44 +01:00
industrialio-sw-device.c iio: Add support for creating IIO devices via configfs 2016-05-04 11:43:54 +01:00
industrialio-sw-trigger.c iio: core: fix ptr_ret.cocci warnings 2016-01-20 17:09:18 -08:00
industrialio-trigger.c iio:trigger: Add helper function to verify that a trigger belongs to the same device 2016-09-27 20:32:55 +01:00
industrialio-triggered-event.c iio: Support triggered events 2015-08-27 20:47:09 +01:00
inkern.c iio: inkern: add helpers to query available values from channels 2016-11-13 11:40:26 +00:00