struct media_entity_operations — Media entity operations
struct media_entity_operations {
int (* link_setup) (struct media_entity *entity,const struct media_pad *local,const struct media_pad *remote, u32 flags);
int (* link_validate) (struct media_link *link);
}; Notify the entity of link changes. The operation can return an error, in which case link setup will be cancelled. Optional.
Return whether a link is valid from the entity point of
view. The media_entity_pipeline_start function
validates all links by calling this operation. Optional.