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[v6,05/14] iio: document pitch, yaw, roll modifiers

Message ID 20220613120534.36991-6-andrea.merello@iit.it (mailing list archive)
State Changes Requested
Headers show
Series Add support for Bosch BNO055 IMU | expand

Commit Message

Andrea Merello June 13, 2022, 12:05 p.m. UTC 
From: Andrea Merello <andrea.merello@iit.it>

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>
---
 Documentation/ABI/testing/sysfs-bus-iio | 9 +++++++++
 1 file changed, 9 insertions(+)
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Patch

diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
index 88d012bbfe79..2f54f26d9e59 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio
+++ b/Documentation/ABI/testing/sysfs-bus-iio
@@ -2044,3 +2044,12 @@  Description:
 		Available range for the forced calibration value, expressed as:
 
 		- a range specified as "[min step max]"
+
+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:	5.20
+Contact:	linux-iio@vger.kernel.org
+Description:
+		Raw (unscaled) euler angles readings. Units after
+		application of scale are deg.