diff options
Diffstat (limited to 'include/media/v4l2-subdev.h')
| -rw-r--r-- | include/media/v4l2-subdev.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h index 5364e3a6ac9b..95ec18c2f49c 100644 --- a/include/media/v4l2-subdev.h +++ b/include/media/v4l2-subdev.h @@ -355,6 +355,16 @@ struct v4l2_mbus_frame_desc { }; /** + * enum v4l2_subdev_pre_streamon_flags - Flags for pre_streamon subdev core op + * + * @V4L2_SUBDEV_PRE_STREAMON_FL_MANUAL_LP: Set the transmitter to either LP-11 + * or LP-111 mode before call to s_stream(). + */ +enum v4l2_subdev_pre_streamon_flags { + V4L2_SUBDEV_PRE_STREAMON_FL_MANUAL_LP = BIT(0), +}; + +/** * struct v4l2_subdev_video_ops - Callbacks used when v4l device was opened * in video mode. * @@ -409,6 +419,19 @@ struct v4l2_mbus_frame_desc { * @s_rx_buffer: set a host allocated memory buffer for the subdev. The subdev * can adjust @size to a lower value and must not write more data to the * buffer starting at @data than the original value of @size. + * + * @pre_streamon: May be called before streaming is actually started, to help + * initialising the bus. Current usage is to set a CSI-2 transmitter to + * LP-11 or LP-111 mode before streaming. See &enum + * v4l2_subdev_pre_streamon_flags. + * + * pre_streamon shall return error if it cannot perform the operation as + * indicated by the flags argument. In particular, -EACCES indicates lack + * of support for the operation. The caller shall call post_streamoff for + * each successful call of pre_streamon. + * + * @post_streamoff: Called after streaming is stopped, but if and only if + * pre_streamon was called earlier. */ struct v4l2_subdev_video_ops { int (*s_routing)(struct v4l2_subdev *sd, u32 input, u32 output, u32 config); @@ -435,6 +458,8 @@ struct v4l2_subdev_video_ops { struct v4l2_dv_timings *timings); int (*s_rx_buffer)(struct v4l2_subdev *sd, void *buf, unsigned int *size); + int (*pre_streamon)(struct v4l2_subdev *sd, u32 flags); + int (*post_streamoff)(struct v4l2_subdev *sd); }; /** |