[v2,2/3] videodev2: add new event type V4L2_EVENT_SIGNALCHANGED

Commit Message

Mikhail Domrachev March 31, 2014, 11:14 a.m. UTC

Applications subscribed for this event can be notified about
changes of TV standard.

Signed-off-by: Mikhail Domrachev <[e-mail]>
---
 Documentation/DocBook/media/v4l/vidioc-subscribe-event.xml | 7 +++++++
 include/uapi/linux/videodev2.h                             | 1 +
 2 files changed, 8 insertions(+)

Patch

diff --git a/Documentation/DocBook/media/v4l/vidioc-subscribe-event.xml b/Documentation/DocBook/media/v4l/vidioc-subscribe-event.xml
index 5c70b61..dc7cb9f 100644
--- a/Documentation/DocBook/media/v4l/vidioc-subscribe-event.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-subscribe-event.xml
@@ -155,6 +155,13 @@ 
 	    </entry>
 	  </row>
 	  <row>
+	    <entry><constant>V4L2_EVENT_SIGNALCHANGED</constant></entry>
+	    <entry>5</entry>
+	    <entry>This event is triggered when TV standard of the input signal is changed.
+		   New detected standard of type &v4l2-std-id; placed to u.data[] field of &v4l2-event;
+	    </entry>
+	  </row>
+	  <row>
 	    <entry><constant>V4L2_EVENT_PRIVATE_START</constant></entry>
 	    <entry>0x08000000</entry>
 	    <entry>Base event number for driver-private events.</entry>
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index e35ad6c..45094f2 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -1765,6 +1765,7 @@  struct v4l2_streamparm {
 #define V4L2_EVENT_EOS				2
 #define V4L2_EVENT_CTRL				3
 #define V4L2_EVENT_FRAME_SYNC			4
+#define V4L2_EVENT_SIGNALCHANGED		5
 #define V4L2_EVENT_PRIVATE_START		0x08000000
 
 /* Payload for V4L2_EVENT_VSYNC */