Commit d0700c51 authored by Sakari Ailus's avatar Sakari Ailus Committed by Mauro Carvalho Chehab
Browse files

[media] media: Add pad flag MEDIA_PAD_FL_MUST_CONNECT 



Pads that set this flag must be connected by an active link for the entity
to stream.

Signed-off-by: default avatarSakari Ailus <sakari.ailus@iki.fi>
Acked-by: default avatarSylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 16422f55

Documentation/DocBook/media/v4l/media-ioc-enum-links.xml

+9 −0
Original line number Diff line number Diff line
@@ -134,6 +134,15 @@ 
	    <entry>Output pad, relative to the entity. Output pads source data

	    and are origins of links.</entry>

	  </row>

	  <row>

	    <entry><constant>MEDIA_PAD_FL_MUST_CONNECT</constant></entry>

	    <entry>If this flag is set and the pad is linked to any other

	    pad, then at least one of those links must be enabled for the

	    entity to be able to stream. There could be temporary reasons

	    (e.g. device configuration dependent) for the pad to need

	    enabled links even when this flag isn't set; the absence of the

	    flag doesn't imply there is none.</entry>

	  </row>

	</tbody>

      </tgroup>

    </table>

include/uapi/linux/media.h

+1 −0
Original line number Diff line number Diff line
@@ -98,6 +98,7 @@ struct media_entity_desc { 


#define MEDIA_PAD_FL_SINK		(1 << 0)

#define MEDIA_PAD_FL_SOURCE		(1 << 1)

#define MEDIA_PAD_FL_MUST_CONNECT	(1 << 2)



struct media_pad_desc {

	__u32 entity;		/* entity ID */