diff options
Diffstat (limited to 'include/media/media-device.h')
| -rw-r--r-- | include/media/media-device.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/include/media/media-device.h b/include/media/media-device.h index ebc2f3a239eb..e01bbc427fcd 100644 --- a/include/media/media-device.h +++ b/include/media/media-device.h @@ -338,6 +338,32 @@ struct media_device { #define to_media_device(node) container_of(node, struct media_device, devnode) /** + * media_device_init() - Initializes a media device element + * + * @mdev: pointer to struct &media_device + * + * This function initializes the media device prior to its registration. + * The media device initialization and registration is split in two functions + * to avoid race conditions and make the media device available to user-space + * before the media graph has been completed. + * + * So drivers need to first initialize the media device, register any entity + * within the media device, create pad to pad links and then finally register + * the media device by calling media_device_register() as a final step. + */ +void media_device_init(struct media_device *mdev); + +/** + * media_device_cleanup() - Cleanups a media device element + * + * @mdev: pointer to struct &media_device + * + * This function that will destroy the graph_mutex that is + * initialized in media_device_init(). + */ +void media_device_cleanup(struct media_device *mdev); + +/** * __media_device_register() - Registers a media device element * * @mdev: pointer to struct &media_device |