linux-dev/Documentation/ABI/testing/sysfs-bus-iio, branch master

iio: document "serialnumber" sysfs attribute

2022-09-21T17:42:56Z

Add ABI documentation for the new "serialnumber" sysfs attribute. The first user is the bno055 IIO driver. Signed-off-by: Andrea Merello Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220907132205.28021-11-andrea.merello@iit.it Signed-off-by: Jonathan Cameron

iio: document pitch, yaw, roll modifiers

2022-09-21T17:42:55Z

Introduce ABI documentation for new modifiers used for reporting rotations expressed as euler angles (i.e. yaw, pitch, roll). It looks like we have some unit inconsistency along various IIO modifiers: it seems that incli is in deg, angl is in radians and rot isn't documented, but at least the adis16209 driver has rot in deg. Here we use deg (so angl is the only one using radians). Signed-off-by: Andrea Merello Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220907132205.28021-6-andrea.merello@iit.it Signed-off-by: Jonathan Cameron

iio: document linear acceleration modifiers

2022-09-21T17:42:55Z

Introduce ABI documentation for new IIO modifiers used for reporting "linear acceleration" measures. Signed-off-by: Andrea Merello Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220907132205.28021-3-andrea.merello@iit.it Signed-off-by: Jonathan Cameron

iio: Add new event type gesture and use direction for single and double tap

2022-09-05T17:08:42Z

Add new event type for tap called gesture and the direction can be used to differentiate single and double tap. This may be used by accelerometer sensors to express single and double tap events. For directional tap, modifiers like IIO_MOD_(X/Y/Z) can be used along with singletap and doubletap direction. Signed-off-by: Jagath Jog J Link: https://lore.kernel.org/r/20220831063117.4141-2-jagathjog1996@gmail.com Signed-off-by: Jonathan Cameron

iio: core: Introduce _zeropoint for differential channels

2022-08-15T21:30:01Z

Address an ABI gap for device where the offset of both lines in a differential pair may be controlled so as to allow a wider range of inputs, but without having any direct effect of the differential measurement. _offset cannot be used as to remain in line with existing usage, userspace would be expected to apply it as (_raw + _offset) * _scale whereas _zeropoint is not. i.e. If we were computing the differential in software it would be. ((postive_raw + _zeropoint) - (negative_raw + zeropoint) + _offset) * _scale = ((postive_raw - negative_raw) + _offset) * _scale = (differential_raw + _offset) * _scale Similarly calibbias is expected to tweak the measurement seen, not the adjust the two lines of the differential pair. Needed for in_capacitanceX-capacitanceY_zeropoint for the AD7746 CDC driver. Signed-off-by: Jonathan Cameron Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220626122938.582107-12-jic23@kernel.org

iio: ABI: Fix wrong format of differential capacitance channel ABI.

2022-08-15T21:30:00Z

in_ only occurs once in these attributes. Fixes: 0baf29d658c7 ("staging:iio:documentation Add abi docs for capacitance adcs.") Signed-off-by: Jonathan Cameron Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220626122938.582107-3-jic23@kernel.org

Documentation: ABI: testing: rtq6056: Update ABI docs

2022-08-15T21:29:57Z

Add documentation for the usage of voltage channel integration time. Signed-off-by: ChiYuan Huang Link: https://lore.kernel.org/r/1658242365-27797-4-git-send-email-u0084500@gmail.com Signed-off-by: Jonathan Cameron

iio: ABI: stm32-timer-trigger: Fuse unusual ABI into main doc.

2022-07-18T17:38:34Z

We can't duplicate the description of sampling_frequency. This device has some unusual requirements which we solved by giving a sampling_frequency of 0 special meaning. As such add a note about this unusual usage to the main documentation. Whilst I don't particularly like this resolution, it is the best I could come up with given earlier discussion on this topic. Link: https://lore.kernel.org/linux-iio/20210315101217.00002c50@Huawei.com/ Signed-off-by: Jonathan Cameron Cc: Fabrice Gasnier Reviewed-by: Mauro Carvalho Chehab Link: https://lore.kernel.org/r/20220626165511.602202-4-jic23@kernel.org

iio: ABI: Add a new location label

2022-06-11T13:35:26Z

Add "accel-camera" when an IMU is location near the camera in a swivel sub-assembly. These IMU are used for AR applications. Signed-off-by: Gwendal Grignou Link: https://lore.kernel.org/r/20220427190804.961697-2-gwendal@chromium.org Signed-off-by: Jonathan Cameron

Documentation: ABI: testing: admv1014: add ABI docs

2022-02-21T19:33:06Z

Add documentation for the use of the Digital Attenuator gain. Signed-off-by: Antoniu Miclaus Link: https://lore.kernel.org/r/20220215081216.67706-3-antoniu.miclaus@analog.com Signed-off-by: Jonathan Cameron