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| author | Sylwester Nawrocki <s.nawrocki@samsung.com> | 2013-05-31 10:37:26 -0300 |
|---|---|---|
| committer | Chanho Park <chanho61.park@samsung.com> | 2014-11-18 11:43:04 +0900 |
| commit | dfe5bb1fae8f9829bf857097214bbf69e9e067d1 (patch) | |
| tree | 77e72d086a7c7798e0b2b071575a68d634ffadb7 /include | |
| parent | 8ec51b5f0782939d124856aa9555f1de88acd9df (diff) | |
| download | linux-3.10-dfe5bb1fae8f9829bf857097214bbf69e9e067d1.tar.gz linux-3.10-dfe5bb1fae8f9829bf857097214bbf69e9e067d1.tar.bz2 linux-3.10-dfe5bb1fae8f9829bf857097214bbf69e9e067d1.zip | |
[media] media: Change media device link_notify behaviour
Currently the media device link_notify callback is invoked before the
actual change of state of a link when the link is being enabled, and
after the actual change of state when the link is being disabled.
This doesn't allow a media device driver to perform any operations
on a full graph before a link is disabled, as well as performing
any tasks on a modified graph right after a link's state is changed.
This patch modifies signature of the link_notify callback. This
callback is now called always before and after a link's state change.
To distinguish the notifications a 'notification' argument is added
to the link_notify callback: MEDIA_DEV_NOTIFY_PRE_LINK_CH indicates
notification before link's state change and
MEDIA_DEV_NOTIFY_POST_LINK_CH corresponds to a notification after
link flags change.
[mchehab@redhat.com: whitespace cleanups]
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/media/media-device.h | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/include/media/media-device.h b/include/media/media-device.h index eaade9815bb..12155a9596c 100644 --- a/include/media/media-device.h +++ b/include/media/media-device.h @@ -45,6 +45,7 @@ struct device; * @entities: List of registered entities * @lock: Entities list lock * @graph_mutex: Entities graph operation lock + * @link_notify: Link state change notification callback * * This structure represents an abstract high-level media device. It allows easy * access to entities and provides basic media device-level support. The @@ -75,10 +76,14 @@ struct media_device { /* Serializes graph operations. */ struct mutex graph_mutex; - int (*link_notify)(struct media_pad *source, - struct media_pad *sink, u32 flags); + int (*link_notify)(struct media_link *link, u32 flags, + unsigned int notification); }; +/* Supported link_notify @notification values. */ +#define MEDIA_DEV_NOTIFY_PRE_LINK_CH 0 +#define MEDIA_DEV_NOTIFY_POST_LINK_CH 1 + /* media_devnode to media_device */ #define to_media_device(node) container_of(node, struct media_device, devnode) |