linux.git/drivers/iio/humidity, branch v5.10.258

iio: humidity: hdc100x: Add margin to the conversion time

2021-08-18T06:59:04+00:00

commit 84edec86f449adea9ee0b4912a79ab8d9d65abb7 upstream.

The datasheets have the following note for the conversion time
specification: "This parameter is specified by design and/or
characterization and it is not tested in production."

Parts have been seen that require more time to do 14-bit conversions for
the relative humidity channel.  The result is ENXIO due to the address
phase of a transfer not getting an ACK.

Delay an additional 1 ms per conversion to allow for additional margin.

Fixes: 4839367d99e3 ("iio: humidity: add HDC100x support")
Signed-off-by: Chris Lesiak 
Acked-by: Matt Ranostay 
Link: https://lore.kernel.org/r/20210614141820.2034827-1-chris.lesiak@licor.com
Cc: 
Signed-off-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman

iio: humidity: am2315: Fix buffer alignment in iio_push_to_buffers_with_timestamp()

2021-07-14T14:56:36+00:00

[ Upstream commit f4ca2e2595d9fee65d5ce0d218b22ce00e5b2915 ]

To make code more readable, use a structure to express the channel
layout and ensure the timestamp is 8 byte aligned.

Found during an audit of all calls of uses of
iio_push_to_buffers_with_timestamp()

Fixes: 0d96d5ead3f7 ("iio: humidity: Add triggered buffer support for AM2315")
Signed-off-by: Jonathan Cameron 
Reviewed-by: Andy Shevchenko 
Link: https://lore.kernel.org/r/20210501170121.512209-12-jic23@kernel.org
Signed-off-by: Sasha Levin

iio: hid-sensors: select IIO_TRIGGERED_BUFFER under HID_SENSOR_IIO_TRIGGER

2021-05-19T08:13:13+00:00

[ Upstream commit 7061803522ee7876df1ca18cdd1e1551f761352d ]

During commit 067fda1c065ff ("iio: hid-sensors: move triggered buffer
setup into hid_sensor_setup_trigger"), the
iio_triggered_buffer_{setup,cleanup}() functions got moved under the
hid-sensor-trigger module.

The above change works fine, if any of the sensors get built. However, when
only the common hid-sensor-trigger module gets built (and none of the
drivers), then the IIO_TRIGGERED_BUFFER symbol isn't selected/enforced.

Previously, each driver would enforce/select the IIO_TRIGGERED_BUFFER
symbol. With this change the HID_SENSOR_IIO_TRIGGER (for the
hid-sensor-trigger module) will enforce that IIO_TRIGGERED_BUFFER gets
selected.

All HID sensor drivers select the HID_SENSOR_IIO_TRIGGER symbol. So, this
change removes the IIO_TRIGGERED_BUFFER enforcement from each driver.

Fixes: 067fda1c065ff ("iio: hid-sensors: move triggered buffer setup into hid_sensor_setup_trigger")
Reported-by: Thomas Deutschmann 
Cc: Srinivas Pandruvada 
Signed-off-by: Alexandru Ardelean 
Acked-by: Srinivas Pandruvada 
Link: https://lore.kernel.org/r/20210414084955.260117-1-aardelean@deviqon.com
Signed-off-by: Jonathan Cameron 
Signed-off-by: Sasha Levin

iio: hid-sensor-humidity: Fix alignment issue of timestamp channel

2021-03-25T08:04:16+00:00

commit 37e89e574dc238a4ebe439543c5ab4fbb2f0311b upstream.

This patch ensures that, there is sufficient space and correct
alignment for the timestamp.

Fixes: d7ed89d5aadf ("iio: hid: Add humidity sensor support")
Signed-off-by: Ye Xiang 
Cc: 
Link: https://lore.kernel.org/r/20210303063615.12130-2-xiang.ye@intel.com
Signed-off-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman

iio:humidity:si7020: Drop of_match_ptr protection

2020-09-21T17:41:34+00:00

This prevents use of this driver with ACPI via PRP0001 and is
an example of an anti pattern I'm trying to remove from IIO.
Hence drop from this driver.

Signed-off-by: Jonathan Cameron 
Reviewed-by: Andy Shevchenko 
Cc: David Barksdale 
Link: https://lore.kernel.org/r/20200910173242.621168-38-jic23@kernel.org

iio:humidity:htu21: Drop of_match_ptr protection

2020-09-21T17:41:34+00:00

This prevents use of this driver with ACPI via PRP0001 and is
an example of an anti pattern I'm trying to remove from IIO.
Hence drop from this driver.

Signed-off-by: Jonathan Cameron 
Reviewed-by: Andy Shevchenko 
Cc: Ludovic Tancerel 
Link: https://lore.kernel.org/r/20200910173242.621168-37-jic23@kernel.org

iio:humidity:hdc100x: Drop of_match_ptr protection.

2020-09-21T17:41:33+00:00

This prevents use of this driver with ACPI via PRP0001 and is
an example of an anti pattern I'm trying to remove from IIO.
Hence drop from this driver.

Signed-off-by: Jonathan Cameron 
Reviewed-by: Andy Shevchenko 
Acked-by: Matt Ranostay 
Link: https://lore.kernel.org/r/20200910173242.621168-31-jic23@kernel.org

drivers/iio/humidity/hdc2010.c:305:2-3: Unneeded semicolon

2020-09-06T15:05:56+00:00

Remove unneeded semicolon.

Generated by: scripts/coccinelle/misc/semicolon.cocci

Fixes: 0115a63c9993 ("iio: humidity: Add TI HDC20x0 support")
CC: Eugene Zaikonnikov 
Signed-off-by: kernel test robot 
Signed-off-by: Jonathan Cameron

iio: humidity: Add TI HDC20x0 support

2020-09-03T18:40:44+00:00

Add driver support for HDC2010/2080 series devices and sysfs
documentation for their heater element.

HDC2010 is an integrated high-accuracy humidity and temperature sensor
with very low power consumption. The device includes a resistive heating
element. The temperature range is -40C to 125C with 0.2C
accuracy. Humidity measurement is 0 to 100% with 2% RH accuracy.

Signed-off-by: Eugene Zaikonnikov 
Signed-off-by: Jonathan Cameron

Merge 5.8-rc6 into staging-next

2020-07-20T07:37:31+00:00

We need the staging fixes in here, and it resolves a merge issue with an
iio driver.

Signed-off-by: Greg Kroah-Hartman