Commit b6e5b8f1 authored Mar 20, 2015 by Ricardo Ribalda Delgado Committed by Mauro Carvalho Chehab Apr 08, 2015

[media] media: New flag V4L2_CTRL_FLAG_EXECUTE_ON_WRITE

Create a new flag that represent controls which its value needs to be
passed to the driver even if it has not changed.

They typically represent actions, like triggering a flash or clearing an
error flag. So writing to such a control means some action is executed.

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

parent b08d8d26

include/uapi/linux/videodev2.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -1457,6 +1457,7 @@ struct v4l2_querymenu {
		#define V4L2_CTRL_FLAG_WRITE_ONLY 0x0040
		#define V4L2_CTRL_FLAG_VOLATILE 0x0080
		#define V4L2_CTRL_FLAG_HAS_PAYLOAD 0x0100
		#define V4L2_CTRL_FLAG_EXECUTE_ON_WRITE 0x0200

		/* Query flags, to be ORed with the control ID */
		#define V4L2_CTRL_FLAG_NEXT_CTRL 0x80000000