[PATCH v3 3/3] iio: distance: srf08: add driver ABI documentation

[Andreas Klinger <ak-n176/SwNRljddJNmlsFzeA@public.gmane.org>]

Add sysfs-bus-iio-distance-srf08 for individual attributes of the driver,
especially:
 - sensitivity which the device documentation calls gain for amplifying the
   signal
 - max_range for limiting the maximum distance for expected echos and
   therefore limiting the time waiting for telegrams

Signed-off-by: Andreas Klinger <ak-n176/SwNRljddJNmlsFzeA@public.gmane.org>
---
 .../ABI/testing/sysfs-bus-iio-distance-srf08       | 27 ++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 Documentation/ABI/testing/sysfs-bus-iio-distance-srf08

diff --git a/Documentation/ABI/testing/sysfs-bus-iio-distance-srf08 b/Documentation/ABI/testing/sysfs-bus-iio-distance-srf08
new file mode 100644
index 000000000000..e96c28064748
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-iio-distance-srf08
@@ -0,0 +1,27 @@
+What		/sys/bus/iio/devices/iio:deviceX/in_distance_raw
+Date:		January 2017
+KernelVersion:	4.11
+Contact:	linux-iio-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
+Description:
+		Get the current distance in meters between the sensor and
+		the first object recognized
+
+What		/sys/bus/iio/devices/iio:deviceX/sensor_sensitivity
+Date:		January 2017
+KernelVersion:	4.11
+Contact:	linux-iio-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
+Description:
+		Show or set the gain boost of the amp, from 0-31 range.
+		default 31
+
+What		/sys/bus/iio/devices/iio:deviceX/sensor_max_range
+Date:		January 2017
+KernelVersion:	4.11
+Contact:	linux-iio-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
+Description:
+		Show or set the maximum range between the sensor and the
+		first object echoed in millimeters.
+		This setting limits the time the driver is waiting for a
+		echo.
+		Can be set between 43 and 11008 in a grid of 43 mm.
+		default 6020
-- 
2.1.4


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