diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/media/v4l2-subdev.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h index a37d9a847196..e754ed3421c5 100644 --- a/include/media/v4l2-subdev.h +++ b/include/media/v4l2-subdev.h @@ -1722,6 +1722,28 @@ int v4l2_subdev_disable_streams(struct v4l2_subdev *sd, u32 pad, */ int v4l2_subdev_s_stream_helper(struct v4l2_subdev *sd, int enable); +/** + * v4l2_subdev_get_frame_desc_passthrough() - Helper to implement the subdev + * v4l2_get_frame_desc operation in simple passthrough cases + * @sd: The subdevice + * @pad: The source pad index + * @fd: The mbus frame desc + * + * Subdevice drivers that only pass through the streams can use this helper + * to implement the &v4l2_subdev_pad_ops.v4l2_get_frame_desc operation. + * + * The helper will call get_frame_desc on the subdevice's sources, create a new + * frame desc which contains only the streams on the given source pad. The data + * for each frame desc entry is copied directly from the data provided from the + * calls to the subdevice's sources, with the exception of the 'stream' field + * which is set according to the subdevice's routing table. + * + * Return: 0 on success, or a negative error code otherwise. + */ +int v4l2_subdev_get_frame_desc_passthrough(struct v4l2_subdev *sd, + unsigned int pad, + struct v4l2_mbus_frame_desc *fd); + #endif /* CONFIG_VIDEO_V4L2_SUBDEV_API */ #endif /* CONFIG_MEDIA_CONTROLLER */ |