On 9/12/19 10:10 PM, Jacopo Mondi wrote:
> Add documentation for the V4L2_CID_CAMERA_SENSOR_LOCATION camera
> control. The newly added read-only control reports the camera device
> mounting position.
>
> Signed-off-by: Jacopo Mondi <[email protected]>
> ---
> .../media/uapi/v4l/ext-ctrls-camera.rst | 32 +++++++++++++++++++
> 1 file changed, 32 insertions(+)
>
> diff --git a/Documentation/media/uapi/v4l/ext-ctrls-camera.rst
> b/Documentation/media/uapi/v4l/ext-ctrls-camera.rst
> index 51c1d5c9eb00..f879dcc9409c 100644
> --- a/Documentation/media/uapi/v4l/ext-ctrls-camera.rst
> +++ b/Documentation/media/uapi/v4l/ext-ctrls-camera.rst
> @@ -510,6 +510,38 @@ 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_CAMERA_SENSOR_LOCATION (integer)``
> + This read-only control describes the camera sensor location by reporting
> + its mounting position on the device where the camera is installed. The
> + control value is constant and not modifiable by software. 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
as -> since
> + expressed as a position relative to the device intended usage
> orientation.
device -> device's
> + For example, a camera sensor installed on the user-facing side of a
> phone,
> + a tablet or a laptop device is said to be installed in the
> + ``V4L2_LOCATION_FRONT`` location while camera sensors installed on the
> side
> + opposite the front one are said to be installed in the
> + ``V4L2_LOCATION_BACK`` location. Camera sensors not directly attached to
> + the device or attached in a way that allows it to move freely, such as
it -> them (plural)
> + webcams and digital cameras, are said to be have
> ``V4L2_LOCATION_EXTERNAL``
to be have -> to have the
> + location.
> +
> +
> +
> +.. flat-table::
> + :header-rows: 0
> + :stub-columns: 0
> +
> + * - ``V4L2_LOCATION_FRONT``
> + - The camera sensor is located on the front side of the device.
> + * - ``V4L2_LOCATION_BACK``
> + - The camera sensor is located on the back side of the device.
> + * - ``V4L2_LOCATION_EXTERNAL``
> + - The camera sensor is not directly attached to the device and is
> + freely movable.
> +
> +
> +
> .. [#f1]
> This control may be changed to a menu control in the future, if more
> options are required.
>
Regards,
Hans
