diff options
Diffstat (limited to 'include/media/media-device.h')
| -rw-r--r-- | include/media/media-device.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/media/media-device.h b/include/media/media-device.h index 30857f7..a8390fe 100644 --- a/include/media/media-device.h +++ b/include/media/media-device.h @@ -25,8 +25,10 @@ #include <linux/device.h> #include <linux/list.h> +#include <linux/spinlock.h> #include <media/media-devnode.h> +#include <media/media-entity.h> /** * struct media_device - Media device @@ -37,6 +39,9 @@ * @bus_info: Unique and stable device location identifier * @hw_revision: Hardware device revision * @driver_version: Device driver version + * @entity_id: ID of the next entity to be registered + * @entities: List of registered entities + * @lock: Entities list lock * * This structure represents an abstract high-level media device. It allows easy * access to entities and provides basic media device-level support. The @@ -58,6 +63,12 @@ struct media_device { char bus_info[32]; u32 hw_revision; u32 driver_version; + + u32 entity_id; + struct list_head entities; + + /* Protects the entities list */ + spinlock_t lock; }; /* media_devnode to media_device */ @@ -66,4 +77,12 @@ struct media_device { int __must_check media_device_register(struct media_device *mdev); void media_device_unregister(struct media_device *mdev); +int __must_check media_device_register_entity(struct media_device *mdev, + struct media_entity *entity); +void media_device_unregister_entity(struct media_entity *entity); + +/* Iterate over all entities. */ +#define media_device_for_each_entity(entity, mdev) \ + list_for_each_entry(entity, &(mdev)->entities, list) + #endif |