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[media] V4L: Add s_rx_buffer subdev video operation

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The s_rx_buffer callback allows the host to set buffer for a data being
received by the subdev, e.g. non-image frame (meta) data. This callback
can be implemented by subdevice like a MIPI CSI2 receiver, allowing the
host driver to gather additional data into frame buffer passed to user
space.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Sylwester Nawrocki 2012-09-13 13:08:19 -03:00 committed by Mauro Carvalho Chehab
parent 24c54f7757
commit a375e1dfef
1 changed files with 6 additions and 0 deletions
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6
include/media/v4l2-subdev.h
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@ -274,6 +274,10 @@ struct v4l2_subdev_audio_ops {
s_mbus_config: set a certain mediabus configuration. This operation is added
for compatibility with soc-camera drivers and should not be used by new
software.
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.
*/
struct v4l2_subdev_video_ops {
int (*s_routing)(struct v4l2_subdev *sd, u32 input, u32 output, u32 config);
@ -327,6 +331,8 @@ struct v4l2_subdev_video_ops {
struct v4l2_mbus_config *cfg);
int (*s_mbus_config)(struct v4l2_subdev *sd,
const struct v4l2_mbus_config *cfg);
int (*s_rx_buffer)(struct v4l2_subdev *sd, void *buf,
unsigned int *size);
};
/*