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-rw-r--r--include/media/media-device.h19
1 files changed, 19 insertions, 0 deletions
diff --git a/include/media/media-device.h b/include/media/media-device.h
index 30857f7fc22b..a8390fe87e83 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

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