Arguments

Description

Entities are identified by a unique positive integer ID. The media controller framework will such ID automatically. IDs are not guaranteed to be contiguous, and the ID number can change on newer Kernel versions. So, neither the driver nor userspace should hardcode ID numbers to refer to the entities, but, instead, use the framework to find the ID, when needed.

The media_entity name, type and flags fields should be initialized before calling media_device_register_entity. Entities embedded in higher-level standard structures can have some of those fields set by the higher-level framework.

If the device has pads, media_entity_pads_init should be called before this function. Otherwise, the media_entity.pad and media_entity.num_pads should be zeroed before calling this function.

Entities have flags that describe the entity capabilities and state

MEDIA_ENT_FL_DEFAULT indicates the default entity for a given type. This can be used to report the default audio and video devices or the default camera sensor.

NOTE

Drivers should set the entity function before calling this function. Please notice that the values MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN and MEDIA_ENT_F_UNKNOWN should not be used by the drivers.