3  * Media entity
14 #include <media/media-entity.h>
21 		return "entity";  in gobj_type()
100 			"%s id %u: entity '%s'\n",  in dev_dbg_obj()
126 			pad->entity->name, pad->index);  in dev_dbg_obj()
197 int media_entity_pads_init(struct media_entity *entity, u16 num_pads,  in media_entity_pads_init()  argument
200 	struct media_device *mdev = entity->graph_obj.mdev;  in media_entity_pads_init()
206 	entity->num_pads = num_pads;  in media_entity_pads_init()
207 	entity->pads = pads;  in media_entity_pads_init()
213 		pads[i].entity = entity;  in media_entity_pads_init()
217 					&entity->pads[i].graph_obj);  in media_entity_pads_init()
232 media_entity_other(struct media_entity *entity, struct media_link *link)  in media_entity_other()  argument
234 	if (link->source->entity == entity)  in media_entity_other()
235 		return link->sink->entity;  in media_entity_other()
237 		return link->source->entity;  in media_entity_other()
240 /* push an entity to traversal stack */
242 		       struct media_entity *entity)  in stack_push()  argument
249 	graph->stack[graph->top].link = entity->links.next;  in stack_push()
250 	graph->stack[graph->top].entity = entity;  in stack_push()
255 	struct media_entity *entity;  in stack_pop()  local
257 	entity = graph->stack[graph->top].entity;  in stack_pop()
260 	return entity;  in stack_pop()
264 #define stack_top(en)	((en)->stack[(en)->top].entity)
295 			    struct media_entity *entity)  in media_graph_walk_start()  argument
298 	media_entity_enum_set(&graph->ent_enum, entity);  in media_graph_walk_start()
301 	graph->stack[graph->top].entity = NULL;  in media_graph_walk_start()
302 	stack_push(graph, entity);  in media_graph_walk_start()
303 	dev_dbg(entity->graph_obj.mdev->dev,  in media_graph_walk_start()
304 		"begin graph walk at '%s'\n", entity->name);  in media_graph_walk_start()
310 	struct media_entity *entity = stack_top(graph);  in media_graph_walk_iter()  local
319 		dev_dbg(entity->graph_obj.mdev->dev,  in media_graph_walk_iter()
321 			link->source->entity->name, link->source->index,  in media_graph_walk_iter()
322 			link->sink->entity->name, link->sink->index);  in media_graph_walk_iter()
326 	/* Get the entity in the other end of the link . */  in media_graph_walk_iter()
327 	next = media_entity_other(entity, link);  in media_graph_walk_iter()
329 	/* Has the entity already been visited? */  in media_graph_walk_iter()
332 		dev_dbg(entity->graph_obj.mdev->dev,  in media_graph_walk_iter()
333 			"walk: skipping entity '%s' (already seen)\n",  in media_graph_walk_iter()
338 	/* Push the new entity to stack and start over. */  in media_graph_walk_iter()
341 	dev_dbg(entity->graph_obj.mdev->dev, "walk: pushing '%s' on stack\n",  in media_graph_walk_iter()
347 	struct media_entity *entity;  in media_graph_walk_next()  local
353 	 * Depth first search. Push entity to stack and continue from  in media_graph_walk_next()
360 	entity = stack_pop(graph);  in media_graph_walk_next()
361 	dev_dbg(entity->graph_obj.mdev->dev,  in media_graph_walk_next()
362 		"walk: returning entity '%s'\n", entity->name);  in media_graph_walk_next()
364 	return entity;  in media_graph_walk_next()
368 int media_entity_get_fwnode_pad(struct media_entity *entity,  in media_entity_get_fwnode_pad()  argument
376 	if (!entity->ops || !entity->ops->get_fwnode_pad) {  in media_entity_get_fwnode_pad()
377 		for (i = 0; i < entity->num_pads; i++) {  in media_entity_get_fwnode_pad()
378 			if (entity->pads[i].flags & direction_flags)  in media_entity_get_fwnode_pad()
389 	ret = entity->ops->get_fwnode_pad(entity, &endpoint);  in media_entity_get_fwnode_pad()
393 	if (ret >= entity->num_pads)  in media_entity_get_fwnode_pad()
396 	if (!(entity->pads[ret].flags & direction_flags))  in media_entity_get_fwnode_pad()
407 __must_check int __media_pipeline_start(struct media_entity *entity,  in __media_pipeline_start()  argument
410 	struct media_device *mdev = entity->graph_obj.mdev;  in __media_pipeline_start()
412 	struct media_entity *entity_err = entity;  in __media_pipeline_start()
422 	media_graph_walk_start(&pipe->graph, entity);  in __media_pipeline_start()
424 	while ((entity = media_graph_walk_next(graph))) {  in __media_pipeline_start()
428 		entity->stream_count++;  in __media_pipeline_start()
430 		if (entity->pipe && entity->pipe != pipe) {  in __media_pipeline_start()
432 				entity->name,  in __media_pipeline_start()
438 		entity->pipe = pipe;  in __media_pipeline_start()
441 		if (entity->stream_count > 1)  in __media_pipeline_start()
444 		if (!entity->ops || !entity->ops->link_validate)  in __media_pipeline_start()
447 		bitmap_zero(active, entity->num_pads);  in __media_pipeline_start()
448 		bitmap_fill(has_no_links, entity->num_pads);  in __media_pipeline_start()
450 		list_for_each_entry(link, &entity->links, list) {  in __media_pipeline_start()
451 			struct media_pad *pad = link->sink->entity == entity  in __media_pipeline_start()
474 			ret = entity->ops->link_validate(link);  in __media_pipeline_start()
476 				dev_dbg(entity->graph_obj.mdev->dev,  in __media_pipeline_start()
478 					link->source->entity->name,  in __media_pipeline_start()
480 					entity->name, link->sink->index, ret);  in __media_pipeline_start()
486 		bitmap_or(active, active, has_no_links, entity->num_pads);  in __media_pipeline_start()
488 		if (!bitmap_full(active, entity->num_pads)) {  in __media_pipeline_start()
490 			dev_dbg(entity->graph_obj.mdev->dev,  in __media_pipeline_start()
492 				entity->name,  in __media_pipeline_start()
494 					active, entity->num_pads));  in __media_pipeline_start()
520 		if (entity_err == entity)  in __media_pipeline_start()
532 __must_check int media_pipeline_start(struct media_entity *entity,  in media_pipeline_start()  argument
535 	struct media_device *mdev = entity->graph_obj.mdev;  in media_pipeline_start()
539 	ret = __media_pipeline_start(entity, pipe);  in media_pipeline_start()
545 void __media_pipeline_stop(struct media_entity *entity)  in __media_pipeline_stop()  argument
547 	struct media_graph *graph = &entity->pipe->graph;  in __media_pipeline_stop()
548 	struct media_pipeline *pipe = entity->pipe;  in __media_pipeline_stop()
557 	media_graph_walk_start(graph, entity);  in __media_pipeline_stop()
559 	while ((entity = media_graph_walk_next(graph))) {  in __media_pipeline_stop()
561 		if (!WARN_ON_ONCE(entity->stream_count <= 0)) {  in __media_pipeline_stop()
562 			entity->stream_count--;  in __media_pipeline_stop()
563 			if (entity->stream_count == 0)  in __media_pipeline_stop()
564 				entity->pipe = NULL;  in __media_pipeline_stop()
574 void media_pipeline_stop(struct media_entity *entity)  in media_pipeline_stop()  argument
576 	struct media_device *mdev = entity->graph_obj.mdev;  in media_pipeline_stop()
579 	__media_pipeline_stop(entity);  in media_pipeline_stop()
601 static void __media_entity_remove_link(struct media_entity *entity,  in __media_entity_remove_link()  argument
607 	if (link->source->entity == entity)  in __media_entity_remove_link()
608 		remote = link->sink->entity;  in __media_entity_remove_link()
610 		remote = link->source->entity;  in __media_entity_remove_link()
616 		if (link->source->entity == entity)  in __media_entity_remove_link()
632 int media_get_pad_index(struct media_entity *entity, bool is_sink,  in media_get_pad_index()  argument
638 	if (!entity)  in media_get_pad_index()
641 	for (i = 0; i < entity->num_pads; i++) {  in media_get_pad_index()
642 		if (entity->pads[i].flags & MEDIA_PAD_FL_SINK)  in media_get_pad_index()
644 		else if (entity->pads[i].flags & MEDIA_PAD_FL_SOURCE)  in media_get_pad_index()
651 		if (entity->pads[i].sig_type == sig_type)  in media_get_pad_index()
725 	struct media_entity *entity;  in media_create_pad_links()  local
762 	media_device_for_each_entity(entity, mdev) {  in media_create_pad_links()
763 		if (entity->function != function)  in media_create_pad_links()
768 						    entity, sink_pad, flags);  in media_create_pad_links()
770 			ret = media_create_pad_link(entity, source_pad,  in media_create_pad_links()
780 void __media_entity_remove_links(struct media_entity *entity)  in __media_entity_remove_links()  argument
784 	list_for_each_entry_safe(link, tmp, &entity->links, list)  in __media_entity_remove_links()
785 		__media_entity_remove_link(entity, link);  in __media_entity_remove_links()
787 	entity->num_links = 0;  in __media_entity_remove_links()
788 	entity->num_backlinks = 0;  in __media_entity_remove_links()
792 void media_entity_remove_links(struct media_entity *entity)  in media_entity_remove_links()  argument
794 	struct media_device *mdev = entity->graph_obj.mdev;  in media_entity_remove_links()
796 	/* Do nothing if the entity is not registered. */  in media_entity_remove_links()
801 	__media_entity_remove_links(entity);  in media_entity_remove_links()
811 	ret = media_entity_call(link->source->entity, link_setup,  in __media_entity_setup_link_notify()
816 	ret = media_entity_call(link->sink->entity, link_setup,  in __media_entity_setup_link_notify()
819 		media_entity_call(link->source->entity, link_setup,  in __media_entity_setup_link_notify()
850 	source = link->source->entity;  in __media_entity_setup_link()
851 	sink = link->sink->entity;  in __media_entity_setup_link()
893 	list_for_each_entry(link, &source->entity->links, list) {  in media_entity_find_link()
894 		if (link->source->entity == source->entity &&  in media_entity_find_link()
896 		    link->sink->entity == sink->entity &&  in media_entity_find_link()
909 	list_for_each_entry(link, &pad->entity->links, list) {  in media_entity_remote_pad()
967 struct media_link *media_create_intf_link(struct media_entity *entity,  in media_create_intf_link()  argument
978 	link->entity = entity;  in media_create_intf_link()