54 media_entity_init(struct media_entity *entity, u16 num_pads,  in media_entity_init()  argument
65 	entity->group_id = 0;  in media_entity_init()
66 	entity->max_links = max_links;  in media_entity_init()
67 	entity->num_links = 0;  in media_entity_init()
68 	entity->num_backlinks = 0;  in media_entity_init()
69 	entity->num_pads = num_pads;  in media_entity_init()
70 	entity->pads = pads;  in media_entity_init()
71 	entity->links = links;  in media_entity_init()
74 		pads[i].entity = entity;  in media_entity_init()
83 media_entity_cleanup(struct media_entity *entity)  in media_entity_cleanup()  argument
85 	kfree(entity->links);  in media_entity_cleanup()
94 media_entity_other(struct media_entity *entity, struct media_link *link)  in media_entity_other()  argument
96 	if (link->source->entity == entity)  in media_entity_other()
97 		return link->sink->entity;  in media_entity_other()
99 		return link->source->entity;  in media_entity_other()
104 		       struct media_entity *entity)  in stack_push()  argument
112 	graph->stack[graph->top].entity = entity;  in stack_push()
117 	struct media_entity *entity;  in stack_pop()  local
119 	entity = graph->stack[graph->top].entity;  in stack_pop()
122 	return entity;  in stack_pop()
126 #define stack_top(en)	((en)->stack[(en)->top].entity)
139 				   struct media_entity *entity)  in media_entity_graph_walk_start()  argument
142 	graph->stack[graph->top].entity = NULL;  in media_entity_graph_walk_start()
145 	if (WARN_ON(entity->id >= MEDIA_ENTITY_ENUM_MAX_ID))  in media_entity_graph_walk_start()
148 	__set_bit(entity->id, graph->entities);  in media_entity_graph_walk_start()
149 	stack_push(graph, entity);  in media_entity_graph_walk_start()
177 		struct media_entity *entity = stack_top(graph);  in media_entity_graph_walk_next()  local
178 		struct media_link *link = &entity->links[link_top(graph)];  in media_entity_graph_walk_next()
188 		next = media_entity_other(entity, link);  in media_entity_graph_walk_next()
225 __must_check int media_entity_pipeline_start(struct media_entity *entity,  in media_entity_pipeline_start()  argument
228 	struct media_device *mdev = entity->parent;  in media_entity_pipeline_start()
230 	struct media_entity *entity_err = entity;  in media_entity_pipeline_start()
235 	media_entity_graph_walk_start(&graph, entity);  in media_entity_pipeline_start()
237 	while ((entity = media_entity_graph_walk_next(&graph))) {  in media_entity_pipeline_start()
242 		entity->stream_count++;  in media_entity_pipeline_start()
243 		WARN_ON(entity->pipe && entity->pipe != pipe);  in media_entity_pipeline_start()
244 		entity->pipe = pipe;  in media_entity_pipeline_start()
247 		if (entity->stream_count > 1)  in media_entity_pipeline_start()
250 		if (!entity->ops || !entity->ops->link_validate)  in media_entity_pipeline_start()
253 		bitmap_zero(active, entity->num_pads);  in media_entity_pipeline_start()
254 		bitmap_fill(has_no_links, entity->num_pads);  in media_entity_pipeline_start()
256 		for (i = 0; i < entity->num_links; i++) {  in media_entity_pipeline_start()
257 			struct media_link *link = &entity->links[i];  in media_entity_pipeline_start()
258 			struct media_pad *pad = link->sink->entity == entity  in media_entity_pipeline_start()
281 			ret = entity->ops->link_validate(link);  in media_entity_pipeline_start()
283 				dev_dbg(entity->parent->dev,  in media_entity_pipeline_start()
285 					link->source->entity->name,  in media_entity_pipeline_start()
287 					entity->name, link->sink->index, ret);  in media_entity_pipeline_start()
293 		bitmap_or(active, active, has_no_links, entity->num_pads);  in media_entity_pipeline_start()
295 		if (!bitmap_full(active, entity->num_pads)) {  in media_entity_pipeline_start()
297 			dev_dbg(entity->parent->dev,  in media_entity_pipeline_start()
299 				entity->name,  in media_entity_pipeline_start()
301 					active, entity->num_pads));  in media_entity_pipeline_start()
326 		if (entity_err == entity)  in media_entity_pipeline_start()
348 void media_entity_pipeline_stop(struct media_entity *entity)  in media_entity_pipeline_stop()  argument
350 	struct media_device *mdev = entity->parent;  in media_entity_pipeline_stop()
355 	media_entity_graph_walk_start(&graph, entity);  in media_entity_pipeline_stop()
357 	while ((entity = media_entity_graph_walk_next(&graph))) {  in media_entity_pipeline_stop()
358 		entity->stream_count--;  in media_entity_pipeline_stop()
359 		if (entity->stream_count == 0)  in media_entity_pipeline_stop()
360 			entity->pipe = NULL;  in media_entity_pipeline_stop()
381 struct media_entity *media_entity_get(struct media_entity *entity)  in media_entity_get()  argument
383 	if (entity == NULL)  in media_entity_get()
386 	if (entity->parent->dev &&  in media_entity_get()
387 	    !try_module_get(entity->parent->dev->driver->owner))  in media_entity_get()
390 	return entity;  in media_entity_get()
402 void media_entity_put(struct media_entity *entity)  in media_entity_put()  argument
404 	if (entity == NULL)  in media_entity_put()
407 	if (entity->parent->dev)  in media_entity_put()
408 		module_put(entity->parent->dev->driver->owner);  in media_entity_put()
416 static struct media_link *media_entity_add_link(struct media_entity *entity)  in media_entity_add_link()  argument
418 	if (entity->num_links >= entity->max_links) {  in media_entity_add_link()
419 		struct media_link *links = entity->links;  in media_entity_add_link()
420 		unsigned int max_links = entity->max_links + 2;  in media_entity_add_link()
427 		for (i = 0; i < entity->num_links; i++)  in media_entity_add_link()
430 		entity->max_links = max_links;  in media_entity_add_link()
431 		entity->links = links;  in media_entity_add_link()
434 	return &entity->links[entity->num_links++];  in media_entity_add_link()
478 void __media_entity_remove_links(struct media_entity *entity)  in __media_entity_remove_links()  argument
482 	for (i = 0; i < entity->num_links; i++) {  in __media_entity_remove_links()
483 		struct media_link *link = &entity->links[i];  in __media_entity_remove_links()
487 		if (link->source->entity == entity)  in __media_entity_remove_links()
488 			remote = link->sink->entity;  in __media_entity_remove_links()
490 			remote = link->source->entity;  in __media_entity_remove_links()
500 			if (link->source->entity == entity)  in __media_entity_remove_links()
511 	entity->num_links = 0;  in __media_entity_remove_links()
512 	entity->num_backlinks = 0;  in __media_entity_remove_links()
516 void media_entity_remove_links(struct media_entity *entity)  in media_entity_remove_links()  argument
519 	if (entity->parent == NULL)  in media_entity_remove_links()
522 	mutex_lock(&entity->parent->graph_mutex);  in media_entity_remove_links()
523 	__media_entity_remove_links(entity);  in media_entity_remove_links()
524 	mutex_unlock(&entity->parent->graph_mutex);  in media_entity_remove_links()
533 	ret = media_entity_call(link->source->entity, link_setup,  in __media_entity_setup_link_notify()
538 	ret = media_entity_call(link->sink->entity, link_setup,  in __media_entity_setup_link_notify()
541 		media_entity_call(link->source->entity, link_setup,  in __media_entity_setup_link_notify()
586 	source = link->source->entity;  in __media_entity_setup_link()
587 	sink = link->sink->entity;  in __media_entity_setup_link()
614 	mutex_lock(&link->source->entity->parent->graph_mutex);  in media_entity_setup_link()
616 	mutex_unlock(&link->source->entity->parent->graph_mutex);  in media_entity_setup_link()
636 	for (i = 0; i < source->entity->num_links; ++i) {  in media_entity_find_link()
637 		link = &source->entity->links[i];  in media_entity_find_link()
639 		if (link->source->entity == source->entity &&  in media_entity_find_link()
641 		    link->sink->entity == sink->entity &&  in media_entity_find_link()
664 	for (i = 0; i < pad->entity->num_links; i++) {  in media_entity_remote_pad()
665 		struct media_link *link = &pad->entity->links[i];  in media_entity_remote_pad()