[PATCH/RFC v2 01/15] v4l2-subdev.h: add pad and stream aware s_stream

["Niklas Söderlund" <niklas.soderlund+renesas@ragnatech.se>]

To be able to start and stop individual streams of a multiplexed pad the
s_stream operation needs to be both pad and stream aware. Add a new
operation to pad ops to facilitate this.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
---
 include/media/v4l2-subdev.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h
index a30a94fad8dbacde..7288209338a48fda 100644
--- a/include/media/v4l2-subdev.h
+++ b/include/media/v4l2-subdev.h
@@ -669,6 +669,9 @@ struct v4l2_subdev_pad_config {
  *
  * @set_frame_desc: set the low level media bus frame parameters, @fd array
  *                  may be adjusted by the subdev driver to device capabilities.
+ *
+ * @s_stream: used to notify the driver that a stream will start or has
+ *	stopped.
  */
 struct v4l2_subdev_pad_ops {
 	int (*init_cfg)(struct v4l2_subdev *sd,
@@ -713,6 +716,8 @@ struct v4l2_subdev_pad_ops {
 			   struct v4l2_subdev_routing *route);
 	int (*set_routing)(struct v4l2_subdev *sd,
 			   struct v4l2_subdev_routing *route);
+	int (*s_stream)(struct v4l2_subdev *sd, unsigned int pad,
+			unsigned int stream, int enable);
 };
 
 /**
-- 
2.15.1