iio:Documentation: Add documentation for hinge sensor channels

Add channel description for hinge sensor, including channel label
attribute and raw data description.

Signed-off-by: Ye Xiang <xiang.ye@intel.com>
Link: https://lore.kernel.org/r/20201215054444.9324-4-xiang.ye@intel.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
index 35289d4..d957f5d 100644 (file)
--- a/Documentation/ABI/testing/sysfs-bus-iio
+++ b/Documentation/ABI/testing/sysfs-bus-iio
@@ -198,6 +198,7 @@ Description:
                Units after application of scale and offset are m/s^2.
 
 What:          /sys/bus/iio/devices/iio:deviceX/in_angl_raw
+What:          /sys/bus/iio/devices/iio:deviceX/in_anglY_raw
 KernelVersion: 4.17
 Contact:       linux-iio@vger.kernel.org
 Description:
@@ -1812,3 +1813,13 @@ Contact: linux-iio@vger.kernel.org
 Description:
                Unscaled light intensity according to CIE 1931/DIN 5033 color space.
                Units after application of scale are nano nanowatts per square meter.
+
+What:          /sys/bus/iio/devices/iio:deviceX/in_anglY_label
+KernelVersion: 5.12
+Contact:       linux-iio@vger.kernel.org
+Description:
+               Optional symbolic label for channel Y.
+               For Intel hid hinge sensor, the label values are:
+               hinge, keyboard, screen. It means the three channels
+               each correspond respectively to hinge angle, keyboard angle,
+               and screen angle.