3  * Media entity
15 #include <media/media-entity.h>
99 			"%s id %u: entity '%s'\n",  in dev_dbg_obj()
123 			pad->entity->name, pad->index);  in dev_dbg_obj()
194 int media_entity_pads_init(struct media_entity *entity, u16 num_pads,  in media_entity_pads_init()  argument
197 	struct media_device *mdev = entity->graph_obj.mdev;  in media_entity_pads_init()
205 	entity->num_pads = num_pads;  in media_entity_pads_init()
206 	entity->pads = pads;  in media_entity_pads_init()
211 	media_entity_for_each_pad(entity, iter) {  in media_entity_pads_init()
212 		iter->entity = entity;  in media_entity_pads_init()
227 		media_entity_for_each_pad(entity, iter)  in media_entity_pads_init()
245  * @entity: The entity
249  * This function checks the interdependency inside the entity between @pad0
255  * to check the dependency inside the entity between @pad0 and @pad1. If the
256  * has_pad_interdep operation is not implemented, all pads of the entity are
262  * The caller must hold entity->graph_obj.mdev->mutex.
266 static bool media_entity_has_pad_interdep(struct media_entity *entity,  in media_entity_has_pad_interdep()  argument
269 	if (pad0 >= entity->num_pads || pad1 >= entity->num_pads)  in media_entity_has_pad_interdep()
272 	if (entity->pads[pad0].flags & entity->pads[pad1].flags &  in media_entity_has_pad_interdep()
276 	if (!entity->ops || !entity->ops->has_pad_interdep)  in media_entity_has_pad_interdep()
279 	return entity->ops->has_pad_interdep(entity, pad0, pad1);  in media_entity_has_pad_interdep()
283 media_entity_other(struct media_entity *entity, struct media_link *link)  in media_entity_other()  argument
285 	if (link->source->entity == entity)  in media_entity_other()
286 		return link->sink->entity;  in media_entity_other()
288 		return link->source->entity;  in media_entity_other()
291 /* push an entity to traversal stack */
293 		       struct media_entity *entity)  in stack_push()  argument
300 	graph->stack[graph->top].link = entity->links.next;  in stack_push()
301 	graph->stack[graph->top].entity = entity;  in stack_push()
306 	struct media_entity *entity;  in stack_pop()  local
308 	entity = graph->stack[graph->top].entity;  in stack_pop()
311 	return entity;  in stack_pop()
315 #define stack_top(en)	((en)->stack[(en)->top].entity)
346 			    struct media_entity *entity)  in media_graph_walk_start()  argument
349 	media_entity_enum_set(&graph->ent_enum, entity);  in media_graph_walk_start()
352 	graph->stack[graph->top].entity = NULL;  in media_graph_walk_start()
353 	stack_push(graph, entity);  in media_graph_walk_start()
354 	dev_dbg(entity->graph_obj.mdev->dev,  in media_graph_walk_start()
355 		"begin graph walk at '%s'\n", entity->name);  in media_graph_walk_start()
361 	struct media_entity *entity = stack_top(graph);  in media_graph_walk_iter()  local
376 		dev_dbg(entity->graph_obj.mdev->dev,  in media_graph_walk_iter()
378 			link->source->entity->name, link->source->index,  in media_graph_walk_iter()
379 			link->sink->entity->name, link->sink->index);  in media_graph_walk_iter()
383 	/* Get the entity at the other end of the link. */  in media_graph_walk_iter()
384 	next = media_entity_other(entity, link);  in media_graph_walk_iter()
386 	/* Has the entity already been visited? */  in media_graph_walk_iter()
389 		dev_dbg(entity->graph_obj.mdev->dev,  in media_graph_walk_iter()
390 			"walk: skipping entity '%s' (already seen)\n",  in media_graph_walk_iter()
395 	/* Push the new entity to stack and start over. */  in media_graph_walk_iter()
398 	dev_dbg(entity->graph_obj.mdev->dev, "walk: pushing '%s' on stack\n",  in media_graph_walk_iter()
400 	lockdep_assert_held(&entity->graph_obj.mdev->graph_mutex);  in media_graph_walk_iter()
405 	struct media_entity *entity;  in media_graph_walk_next()  local
411 	 * Depth first search. Push entity to stack and continue from  in media_graph_walk_next()
418 	entity = stack_pop(graph);  in media_graph_walk_next()
419 	dev_dbg(entity->graph_obj.mdev->dev,  in media_graph_walk_next()
420 		"walk: returning entity '%s'\n", entity->name);  in media_graph_walk_next()
422 	return entity;  in media_graph_walk_next()
434  * points to the incoming pad and the first link of the entity.
437  * internal pad dependencies in the entity, and then links in the graph. It
438  * does so by iterating over all links of the entity, and following enabled
527 	entry->links = pad->entity->links.next;  in media_pipeline_walk_push()
531 		walk->stack.top, pad->entity->name, pad->index);  in media_pipeline_walk_push()
549 	if (entry->links->next == &entry->pad->entity->links) {  in media_pipeline_walk_pop()
582 				pad->entity->name, pad->index);  in media_pipeline_add_pad()
598 		pad->entity->name, pad->index);  in media_pipeline_add_pad()
603 /* Explore the next link of the entity at the top of the stack. */
620 		link->source->entity->name, link->source->index,  in media_pipeline_explore_next_link()
621 		link->sink->entity->name, link->sink->index);  in media_pipeline_explore_next_link()
631 	if (link->source->entity == pad->entity) {  in media_pipeline_explore_next_link()
641 	 * that is not connected internally in the entity to the incoming pad.  in media_pipeline_explore_next_link()
644 	    !media_entity_has_pad_interdep(pad->entity, pad->index, local->index)) {  in media_pipeline_explore_next_link()
714 			ppad->pad->entity->name, ppad->pad->index);  in media_pipeline_populate()
771 		struct media_entity *entity = pad->entity;  in __media_pipeline_start()  local
776 		dev_dbg(mdev->dev, "Validating pad '%s':%u\n", pad->entity->name,  in __media_pipeline_start()
785 				pad->entity->name, pad->index);  in __media_pipeline_start()
795 		for_each_media_entity_data_link(entity, link) {  in __media_pipeline_start()
815 			if (!entity->ops || !entity->ops->link_validate)  in __media_pipeline_start()
818 			ret = entity->ops->link_validate(link);  in __media_pipeline_start()
822 					link->source->entity->name,  in __media_pipeline_start()
824 					link->sink->entity->name,  in __media_pipeline_start()
831 				link->source->entity->name,  in __media_pipeline_start()
833 				link->sink->entity->name,  in __media_pipeline_start()
845 				pad->entity->name, pad->index);  in __media_pipeline_start()
995 				  struct media_entity *entity)  in __media_pipeline_entity_iter_next()  argument
997 	if (!entity)  in __media_pipeline_entity_iter_next()
1002 		struct media_entity *entity;  in __media_pipeline_entity_iter_next()  local
1005 		entity = ppad->pad->entity;  in __media_pipeline_entity_iter_next()
1008 		if (!media_entity_enum_test_and_set(&iter->ent_enum, entity))  in __media_pipeline_entity_iter_next()
1009 			return entity;  in __media_pipeline_entity_iter_next()
1033 static void __media_entity_remove_link(struct media_entity *entity,  in __media_entity_remove_link()  argument
1041 		if (link->source->entity == entity)  in __media_entity_remove_link()
1042 			remote = link->sink->entity;  in __media_entity_remove_link()
1044 			remote = link->source->entity;  in __media_entity_remove_link()
1050 			if (link->source->entity == entity)  in __media_entity_remove_link()
1068 int media_get_pad_index(struct media_entity *entity, u32 pad_type,  in media_get_pad_index()  argument
1073 	if (!entity)  in media_get_pad_index()
1076 	for (i = 0; i < entity->num_pads; i++) {  in media_get_pad_index()
1077 		if ((entity->pads[i].flags &  in media_get_pad_index()
1081 		if (entity->pads[i].sig_type == sig_type)  in media_get_pad_index()
1155 	struct media_entity *entity;  in media_create_pad_links()  local
1192 	media_device_for_each_entity(entity, mdev) {  in media_create_pad_links()
1193 		if (entity->function != function)  in media_create_pad_links()
1198 						    entity, sink_pad, flags);  in media_create_pad_links()
1200 			ret = media_create_pad_link(entity, source_pad,  in media_create_pad_links()
1210 void __media_entity_remove_links(struct media_entity *entity)  in __media_entity_remove_links()  argument
1214 	list_for_each_entry_safe(link, tmp, &entity->links, list)  in __media_entity_remove_links()
1215 		__media_entity_remove_link(entity, link);  in __media_entity_remove_links()
1217 	entity->num_links = 0;  in __media_entity_remove_links()
1218 	entity->num_backlinks = 0;  in __media_entity_remove_links()
1222 void media_entity_remove_links(struct media_entity *entity)  in media_entity_remove_links()  argument
1224 	struct media_device *mdev = entity->graph_obj.mdev;  in media_entity_remove_links()
1226 	/* Do nothing if the entity is not registered. */  in media_entity_remove_links()
1231 	__media_entity_remove_links(entity);  in media_entity_remove_links()
1241 	ret = media_entity_call(link->source->entity, link_setup,  in __media_entity_setup_link_notify()
1246 	ret = media_entity_call(link->sink->entity, link_setup,  in __media_entity_setup_link_notify()
1249 		media_entity_call(link->source->entity, link_setup,  in __media_entity_setup_link_notify()
1323 	for_each_media_entity_data_link(source->entity, link) {  in media_entity_find_link()
1324 		if (link->source->entity == source->entity &&  in media_entity_find_link()
1326 		    link->sink->entity == sink->entity &&  in media_entity_find_link()
1339 	for_each_media_entity_data_link(pad->entity, link) {  in media_pad_remote_pad_first()
1356 media_entity_remote_pad_unique(const struct media_entity *entity,  in media_entity_remote_pad_unique()  argument
1362 	list_for_each_entry(link, &entity->links, list) {  in media_entity_remote_pad_unique()
1379 		if (local_pad->entity == entity) {  in media_entity_remote_pad_unique()
1399 	list_for_each_entry(link, &pad->entity->links, list) {  in media_pad_remote_pad_unique()
1425 int media_entity_get_fwnode_pad(struct media_entity *entity,  in media_entity_get_fwnode_pad()  argument
1433 	if (!entity->ops || !entity->ops->get_fwnode_pad) {  in media_entity_get_fwnode_pad()
1434 		for (i = 0; i < entity->num_pads; i++) {  in media_entity_get_fwnode_pad()
1435 			if (entity->pads[i].flags & direction_flags)  in media_entity_get_fwnode_pad()
1446 	ret = entity->ops->get_fwnode_pad(entity, &endpoint);  in media_entity_get_fwnode_pad()
1450 	if (ret >= entity->num_pads)  in media_entity_get_fwnode_pad()
1453 	if (!(entity->pads[ret].flags & direction_flags))  in media_entity_get_fwnode_pad()
1460 struct media_pipeline *media_entity_pipeline(struct media_entity *entity)  in media_entity_pipeline()  argument
1464 	media_entity_for_each_pad(entity, pad) {  in media_entity_pipeline()
1521 struct media_link *media_create_intf_link(struct media_entity *entity,  in media_create_intf_link()  argument
1532 	link->entity = entity;  in media_create_intf_link()
1611 struct media_link *__media_entity_next_link(struct media_entity *entity,  in __media_entity_next_link()  argument
1616 		    : list_first_entry(&entity->links, typeof(*link), list);  in __media_entity_next_link()
1618 	list_for_each_entry_from(link, &entity->links, list)  in __media_entity_next_link()