linux-stable.git/drivers/iio, branch v5.4.34

iio: light: vcnl4000: update sampling periods for vcnl4040

2020-03-25T07:25:54+00:00

commit 2ca5a8792d617b4035aacd0a8be527f667fbf912 upstream.

Vishay has published a new version of "Designing the VCNL4200 Into an
Application" application note in October 2019. The new version specifies
that there is +-20% of part to part tolerance. Although the application
note is related to vcnl4200, according to support the vcnl4040's "ASIC
is quite similar to that one for the VCNL4200".

So update the sampling periods (and comment), including the correct
sampling period for proximity. Both sampling periods are lower. Users
relying on the blocking behaviour of reading will get proximity
measurements much earlier.

Fixes: 5a441aade5b3 ("iio: light: vcnl4000 add support for the VCNL4040 proximity and light sensor")
Reviewed-by: Guido Günther 
Tested-by: Guido Günther 
Signed-off-by: Tomas Novotny 
Cc: 
Signed-off-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman

iio: light: vcnl4000: update sampling periods for vcnl4200

2020-03-25T07:25:54+00:00

commit b42aa97ed5f1169cfd37175ef388ea62ff2dcf43 upstream.

Vishay has published a new version of "Designing the VCNL4200 Into an
Application" application note in October 2019. The new version specifies
that there is +-20% of part to part tolerance. This explains the drift
seen during experiments. The proximity pulse width is also changed from
32us to 30us. According to the support, the tolerance also applies to
ambient light.

So update the sampling periods. As the reading is blocking, current
users may notice slightly longer response time.

Fixes: be38866fbb97 ("iio: vcnl4000: add support for VCNL4200")
Reviewed-by: Guido Günther 
Signed-off-by: Tomas Novotny 
Cc: 
Signed-off-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman

iio: adc: at91-sama5d2_adc: fix differential channels in triggered mode

2020-03-25T07:25:53+00:00

commit a500f3bd787f8224341e44b238f318c407b10897 upstream.

The differential channels require writing the channel offset register (COR).
Otherwise they do not work in differential mode.
The configuration of COR is missing in triggered mode.

Fixes: 5e1a1da0f8c9 ("iio: adc: at91-sama5d2_adc: add hw trigger and buffer support")
Signed-off-by: Eugen Hristev 
Cc: 
Signed-off-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman

iio: adc: stm32-dfsdm: fix sleep in atomic context

2020-03-25T07:25:53+00:00

commit e19ac9d9a978f8238a85a28ed624094a497d5ae6 upstream.

This commit fixes the error message:
"BUG: sleeping function called from invalid context at kernel/irq/chip.c"
Suppress the trigger irq handler. Make the buffer transfers directly
in DMA callback, instead.
Push buffers without timestamps, as timestamps are not supported
in DFSDM driver.

Fixes: 11646e81d775 ("iio: adc: stm32-dfsdm: add support for buffer modes")

Signed-off-by: Olivier Moysan 
Cc: 
Signed-off-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman

iio: magnetometer: ak8974: Fix negative raw values in sysfs

2020-03-25T07:25:53+00:00

commit b500c086e4110829a308c23e83a7cdc65b26228a upstream.

At the moment, reading from in_magn_*_raw in sysfs tends to return
large values around 65000, even though the output of ak8974 is actually
limited to ±32768. This happens because the value is never converted
to the signed 16-bit integer variant.

Add an explicit cast to s16 to fix this.

Fixes: 7c94a8b2ee8c ("iio: magn: add a driver for AK8974")
Signed-off-by: Stephan Gerhold 
Reviewed-by: Linus Waleij 
Cc: 
Signed-off-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman

iio: accel: adxl372: Set iio_chan BE

2020-03-25T07:25:53+00:00

commit cb2116ff97859d34fda6cb561ac654415f4c6230 upstream.

Data stored in the iio-buffer is BE and this
should be specified in the iio_chan_spec struct.

Fixes: f4f55ce38e5f8 ("iio:adxl372: Add FIFO and interrupts support")
Signed-off-by: Alexandru Tachici 
Cc: 
Signed-off-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman

iio: trigger: stm32-timer: disable master mode when stopping

2020-03-25T07:25:53+00:00

commit 29e8c8253d7d5265f58122c0a7902e26df6c6f61 upstream.

Master mode should be disabled when stopping. This mainly impacts
possible other use-case after timer has been stopped. Currently,
master mode remains set (from start routine).

Fixes: 6fb34812c2a2 ("iio: stm32 trigger: Add support for TRGO2 triggers")

Signed-off-by: Fabrice Gasnier 
Cc: 
Signed-off-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman

iio: st_sensors: remap SMO8840 to LIS2DH12

2020-03-25T07:25:53+00:00

commit e43d110cdc206b6df4dd438cd10c81d1da910aad upstream.

According to ST, the HID is for LIS2DH12.

Fixes: 3d56e19815b3 ("iio: accel: st_accel: Add support for the SMO8840 ACPI id")
Signed-off-by: Wen-chien Jesse Sung 
Tested-by: Hans de Goede 
Reviewed-by: Hans de Goede 
Cc: 
Signed-off-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman

iio: chemical: sps30: fix missing triggered buffer dependency

2020-03-25T07:25:53+00:00

commit 016a8845f6da65b2203f102f192046fbb624e250 upstream.

SPS30 uses triggered buffer, but the dependency is not specified in the
Kconfig file.  Fix this by selecting IIO_BUFFER and IIO_TRIGGERED_BUFFER
config symbols.

Cc: stable@vger.kernel.org
Fixes: 232e0f6ddeae ("iio: chemical: add support for Sensirion SPS30 sensor")
Signed-off-by: Petr Štetiar 
Signed-off-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman

iio: st_gyro: Correct data for LSM9DS0 gyro

2020-02-01T09:34:36+00:00

commit e825070f697abddf3b9b0a675ed0ff1884114818 upstream.

The commit 41c128cb25ce ("iio: st_gyro: Add lsm9ds0-gyro support")
assumes that gyro in LSM9DS0 is the same as others with 0xd4 WAI ID,
but datasheet tells slight different story, i.e. the first scale factor
for the chip is 245 dps, and not 250 dps.

Correct this by introducing a separate settings for LSM9DS0.

Fixes: 41c128cb25ce ("iio: st_gyro: Add lsm9ds0-gyro support")
Depends-on: 45a4e4220bf4 ("iio: gyro: st_gyro: fix L3GD20H support")
Cc: Leonard Crestez 
Cc: Lorenzo Bianconi 
Cc: 
Signed-off-by: Andy Shevchenko 
Signed-off-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman