From d0700c5175b0684c9935ca57deae733c2758667c Mon Sep 17 00:00:00 2001 From: Sakari Ailus Date: Sun, 13 Oct 2013 07:58:43 -0300 Subject: [PATCH] [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: Sakari Ailus Acked-by: Sylwester Nawrocki Signed-off-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- Documentation/DocBook/media/v4l/media-ioc-enum-links.xml | 9 +++++++++ include/uapi/linux/media.h | 1 + 2 files changed, 10 insertions(+) diff --git a/Documentation/DocBook/media/v4l/media-ioc-enum-links.xml b/Documentation/DocBook/media/v4l/media-ioc-enum-links.xml index 355df43badc5..cf8548556c7d 100644 --- a/Documentation/DocBook/media/v4l/media-ioc-enum-links.xml +++ b/Documentation/DocBook/media/v4l/media-ioc-enum-links.xml @@ -134,6 +134,15 @@ Output pad, relative to the entity. Output pads source data and are origins of links. + + MEDIA_PAD_FL_MUST_CONNECT + 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. + diff --git a/include/uapi/linux/media.h b/include/uapi/linux/media.h index ed49574ad757..d847c760e8f0 100644 --- a/include/uapi/linux/media.h +++ b/include/uapi/linux/media.h @@ -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 */ -- 2.30.2