Commit 246d178c authored Sep 07, 2022 by Andrea Merello Committed by Jonathan Cameron Sep 21, 2022

iio: document pitch, yaw, roll modifiers

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 <andrea.merello@iit.it>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20220907132205.28021-6-andrea.merello@iit.it

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

parent dcedf145

Documentation/ABI/testing/sysfs-bus-iio

+9 −0

Original line number	Original line	Diff line number	Diff line
	@@ -2146,3 +2146,12 @@ Contact: linux-iio@vger.kernel.org
	Description:		Description:
	Lists all available time values between upper peak to lower		Lists all available time values between upper peak to lower
	peak. Units in seconds.		peak. Units in seconds.

			What: /sys/bus/iio/devices/iio:deviceX/in_rot_yaw_raw
			What: /sys/bus/iio/devices/iio:deviceX/in_rot_pitch_raw
			What: /sys/bus/iio/devices/iio:deviceX/in_rot_roll_raw
			KernelVersion: 6.1
			Contact: linux-iio@vger.kernel.org
			Description:
			Raw (unscaled) euler angles readings. Units after
			application of scale are deg.