Add documentation for the V4L2_CID_LOCATION camera control. The newly
added read-only control reports the camera device mounting position.
Signed-off-by: Jacopo Mondi <jacopo@xxxxxxxxxx>
---
.../media/uapi/v4l/ext-ctrls-camera.rst | 23 +++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/Documentation/media/uapi/v4l/ext-ctrls-camera.rst b/Documentation/media/uapi/v4l/ext-ctrls-camera.rst
index 51c1d5c9eb00..fc0a02eee6d4 100644
--- a/Documentation/media/uapi/v4l/ext-ctrls-camera.rst
+++ b/Documentation/media/uapi/v4l/ext-ctrls-camera.rst
@@ -510,6 +510,29 @@ enum v4l2_scene_mode -
value down. A value of zero stops the motion if one is in progress
and has no effect otherwise.
+``V4L2_CID_LOCATION (integer)``
+ This read-only control describes the camera location by reporting its
+ mounting position on the device where the camera is installed. This
+ control is particularly meaningful for devices which have a well defined
+ orientation, such as phones, laptops and portable devices as the camera
+ location is expressed as a position relative to the device intended
+ usage position. In example, a camera installed on the user-facing side
+ of a phone device is said to be installed in the ``V4L2_LOCATION_FRONT``
+ position.
+
+
+
+.. flat-table::
+ :header-rows: 0
+ :stub-columns: 0
+
+ * - ``V4L2_LOCATION_FRONT``
+ - The camera device is located on the front side of the device.
+ * - ``V4L2_LOCATION_BACK``
+ - The camera device is located on the back side of the device.
+
+
+
.. [#f1]
This control may be changed to a menu control in the future, if more
options are required.
--
2.22.0
