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| author | Sakari Ailus <sakari.ailus@linux.intel.com> | 2015-12-16 11:44:32 -0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2016-01-11 12:19:17 -0200 |
| commit | c8d54cd53b43c514fbd8d36abf0f2f00f719dd54 (patch) | |
| tree | 7e2f2f38d49fcedadf4b37ad6a173cf3c5bc4b26 /include/media/media-device.h | |
| parent | 665faa971d087e8b968ef75d04079a7a462ddfca (diff) | |
| download | lwn-c8d54cd53b43c514fbd8d36abf0f2f00f719dd54.tar.gz lwn-c8d54cd53b43c514fbd8d36abf0f2f00f719dd54.zip | |
[media] media: Add an API to manage entity enumerations
This is useful in e.g. knowing whether certain operations have already
been performed for an entity. The users include the framework itself (for
graph walking) and a number of drivers.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'include/media/media-device.h')
| -rw-r--r-- | include/media/media-device.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/media/media-device.h b/include/media/media-device.h index 2ab4e6803842..da4e12ca259c 100644 --- a/include/media/media-device.h +++ b/include/media/media-device.h @@ -342,6 +342,21 @@ struct media_device { #define to_media_device(node) container_of(node, struct media_device, devnode) /** + * media_entity_enum_init - Initialise an entity enumeration + * + * @e: Entity enumeration to be initialised + * @mdev: The related media device + * + * Returns zero on success or a negative error code. + */ +static inline __must_check int media_entity_enum_init( + struct media_entity_enum *ent_enum, struct media_device *mdev) +{ + return __media_entity_enum_init(ent_enum, + mdev->entity_internal_idx_max + 1); +} + +/** * media_device_init() - Initializes a media device element * * @mdev: pointer to struct &media_device |