Hi Jacopo, On Wed, Aug 14, 2019 at 10:28:12PM +0200, Jacopo Mondi wrote: > 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 s/In/For/ > + 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. There's an effective limit of 64 for menus. ACPI has less than ten different locations for a device, I think 64 will be enough here. So I'd be actually in favour of switching to a menu. -- Sakari Ailus sakari.ailus@xxxxxxxxxxxxxxx
