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    Subject[PATCH v4 13/36] [media] v4l2: add a frame timeout event
    Date
    Add a new FRAME_TIMEOUT event to signal that a video capture or
    output device has timed out waiting for reception or transmit
    completion of a video frame.

    Signed-off-by: Steve Longerbeam <steve_longerbeam@mentor.com>
    ---
    Documentation/media/uapi/v4l/vidioc-dqevent.rst | 5 +++++
    Documentation/media/videodev2.h.rst.exceptions | 1 +
    include/uapi/linux/videodev2.h | 1 +
    3 files changed, 7 insertions(+)

    diff --git a/Documentation/media/uapi/v4l/vidioc-dqevent.rst b/Documentation/media/uapi/v4l/vidioc-dqevent.rst
    index 8d663a7..dd77d9b 100644
    --- a/Documentation/media/uapi/v4l/vidioc-dqevent.rst
    +++ b/Documentation/media/uapi/v4l/vidioc-dqevent.rst
    @@ -197,6 +197,11 @@ call.
    the regions changes. This event has a struct
    :c:type:`v4l2_event_motion_det`
    associated with it.
    + * - ``V4L2_EVENT_FRAME_TIMEOUT``
    + - 7
    + - This event is triggered when the video capture or output device
    + has timed out waiting for the reception or transmit completion of
    + a frame of video.
    * - ``V4L2_EVENT_PRIVATE_START``
    - 0x08000000
    - Base event number for driver-private events.
    diff --git a/Documentation/media/videodev2.h.rst.exceptions b/Documentation/media/videodev2.h.rst.exceptions
    index e11a0d0..5b0f767 100644
    --- a/Documentation/media/videodev2.h.rst.exceptions
    +++ b/Documentation/media/videodev2.h.rst.exceptions
    @@ -459,6 +459,7 @@ replace define V4L2_EVENT_CTRL event-type
    replace define V4L2_EVENT_FRAME_SYNC event-type
    replace define V4L2_EVENT_SOURCE_CHANGE event-type
    replace define V4L2_EVENT_MOTION_DET event-type
    +replace define V4L2_EVENT_FRAME_TIMEOUT event-type
    replace define V4L2_EVENT_PRIVATE_START event-type

    replace define V4L2_EVENT_CTRL_CH_VALUE ctrl-changes-flags
    diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
    index 46e8a2e3..e174c45 100644
    --- a/include/uapi/linux/videodev2.h
    +++ b/include/uapi/linux/videodev2.h
    @@ -2132,6 +2132,7 @@ struct v4l2_streamparm {
    #define V4L2_EVENT_FRAME_SYNC 4
    #define V4L2_EVENT_SOURCE_CHANGE 5
    #define V4L2_EVENT_MOTION_DET 6
    +#define V4L2_EVENT_FRAME_TIMEOUT 7
    #define V4L2_EVENT_PRIVATE_START 0x08000000

    /* Payload for V4L2_EVENT_VSYNC */
    --
    2.7.4
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