From dbedd2f4901e8e86f78d30b7f586a1987d83a69e Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Mon, 15 Feb 2021 05:27:20 +0100 Subject: media: v4l2-mc: Add link flags to v4l2_create_fwnode_links_to_pad() Add a flags argument to the v4l2_create_fwnode_links_to_pad() function to specify the link flags. This allows drivers to create immutable links for instance. Signed-off-by: Laurent Pinchart Reviewed-by: Rui Miguel Silva Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- include/media/v4l2-mc.h | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'include/media') diff --git a/include/media/v4l2-mc.h b/include/media/v4l2-mc.h index bdaa5f2f8ca2..c181685923d5 100644 --- a/include/media/v4l2-mc.h +++ b/include/media/v4l2-mc.h @@ -91,6 +91,7 @@ int v4l_vb2q_enable_media_source(struct vb2_queue *q); * * @src_sd: pointer to a source subdev * @sink: pointer to a subdev sink pad + * @flags: the link flags * * This function searches for fwnode endpoint connections from a source * subdevice to a single sink pad, and if suitable connections are found, @@ -98,6 +99,11 @@ int v4l_vb2q_enable_media_source(struct vb2_queue *q); * called by the sink subdevice, in its v4l2-async notifier subdev bound * callback, to create links from a bound source subdevice. * + * The @flags argument specifies the link flags. The caller shall ensure that + * the flags are valid regardless of the number of links that may be created. + * For instance, setting the MEDIA_LNK_FL_ENABLED flag will cause all created + * links to be enabled, which isn't valid if more than one link is created. + * * .. note:: * * Any sink subdevice that calls this function must implement the @@ -107,7 +113,7 @@ int v4l_vb2q_enable_media_source(struct vb2_queue *q); * Return 0 on success or a negative error code on failure. */ int v4l2_create_fwnode_links_to_pad(struct v4l2_subdev *src_sd, - struct media_pad *sink); + struct media_pad *sink, u32 flags); /** * v4l2_create_fwnode_links - Create fwnode-based links from a source -- cgit v1.2.3-58-ga151