25 		return "link";  in gobj_type()
106 		struct media_link *link = gobj_to_link(gobj);  in dev_dbg_obj()  local
109 			"%s id %u: %s link id %u ==> id %u\n",  in dev_dbg_obj()
111 			media_type(link->gobj0) == MEDIA_GRAPH_PAD ?  in dev_dbg_obj()
113 			media_id(link->gobj0),  in dev_dbg_obj()
114 			media_id(link->gobj1));  in dev_dbg_obj()
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()
249 	graph->stack[graph->top].link = entity->links.next;  in stack_push()
263 #define link_top(en)	((en)->stack[(en)->top].link)
311 	struct media_link *link;  in media_graph_walk_iter()  local
314 	link = list_entry(link_top(graph), typeof(*link), list);  in media_graph_walk_iter()
316 	/* The link is not enabled so we do not follow. */  in media_graph_walk_iter()
317 	if (!(link->flags & MEDIA_LNK_FL_ENABLED)) {  in media_graph_walk_iter()
320 			"walk: skipping disabled link '%s':%u -> '%s':%u\n",  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()
413 	struct media_link *link;  in __media_pipeline_start()  local
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()
452 						? link->sink : link->source;  in __media_pipeline_start()
454 			/* Mark that a pad is connected by a link. */  in __media_pipeline_start()
459 			 * are connected through an enabled link are  in __media_pipeline_start()
463 			    link->flags & MEDIA_LNK_FL_ENABLED)  in __media_pipeline_start()
467 			 * Link validation will only take place for  in __media_pipeline_start()
468 			 * sink ends of the link that are enabled.  in __media_pipeline_start()
470 			if (link->sink != pad ||  in __media_pipeline_start()
471 			    !(link->flags & MEDIA_LNK_FL_ENABLED))  in __media_pipeline_start()
474 			ret = entity->ops->link_validate(link);  in __media_pipeline_start()
477 					"link validation failed for '%s':%u -> '%s':%u, error %d\n",  in __media_pipeline_start()
478 					link->source->entity->name,  in __media_pipeline_start()
479 					link->source->index,  in __media_pipeline_start()
480 					entity->name, link->sink->index, ret);  in __media_pipeline_start()
491 				"'%s':%u must be connected by an enabled link\n",  in __media_pipeline_start()
503 	 * Link validation on graph failed. We revert what we did and  in __media_pipeline_start()
590 	struct media_link *link;  in media_add_link()  local
592 	link = kzalloc(sizeof(*link), GFP_KERNEL);  in media_add_link()
593 	if (link == NULL)  in media_add_link()
596 	list_add_tail(&link->list, head);  in media_add_link()
598 	return link;  in media_add_link()
602 				       struct media_link *link)  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()
613 		if (rlink != link->reverse)  in __media_entity_remove_link()
616 		if (link->source->entity == entity)  in __media_entity_remove_link()
619 		/* Remove the remote link */  in __media_entity_remove_link()
627 	list_del(&link->list);  in __media_entity_remove_link()
628 	media_gobj_destroy(&link->graph_obj);  in __media_entity_remove_link()
629 	kfree(link);  in __media_entity_remove_link()
662 	struct media_link *link;  in media_create_pad_link()  local
674 	link = media_add_link(&source->links);  in media_create_pad_link()
675 	if (link == NULL)  in media_create_pad_link()
678 	link->source = &source->pads[source_pad];  in media_create_pad_link()
679 	link->sink = &sink->pads[sink_pad];  in media_create_pad_link()
680 	link->flags = flags & ~MEDIA_LNK_FL_INTERFACE_LINK;  in media_create_pad_link()
682 	/* Initialize graph object embedded at the new link */  in media_create_pad_link()
684 			&link->graph_obj);  in media_create_pad_link()
691 		__media_entity_remove_link(source, link);  in media_create_pad_link()
700 	/* Initialize graph object embedded at the new link */  in media_create_pad_link()
704 	link->reverse = backlink;  in media_create_pad_link()
705 	backlink->reverse = link;  in media_create_pad_link()
782 	struct media_link *link, *tmp;  in __media_entity_remove_links()  local
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()
806 static int __media_entity_setup_link_notify(struct media_link *link, u32 flags)  in __media_entity_setup_link_notify()  argument
811 	ret = media_entity_call(link->source->entity, link_setup,  in __media_entity_setup_link_notify()
812 				link->source, link->sink, flags);  in __media_entity_setup_link_notify()
816 	ret = media_entity_call(link->sink->entity, link_setup,  in __media_entity_setup_link_notify()
817 				link->sink, link->source, flags);  in __media_entity_setup_link_notify()
819 		media_entity_call(link->source->entity, link_setup,  in __media_entity_setup_link_notify()
820 				  link->source, link->sink, link->flags);  in __media_entity_setup_link_notify()
824 	link->flags = flags;  in __media_entity_setup_link_notify()
825 	link->reverse->flags = link->flags;  in __media_entity_setup_link_notify()
830 int __media_entity_setup_link(struct media_link *link, u32 flags)  in __media_entity_setup_link()  argument
837 	if (link == NULL)  in __media_entity_setup_link()
840 	/* The non-modifiable link flags must not be modified. */  in __media_entity_setup_link()
841 	if ((link->flags & ~mask) != (flags & ~mask))  in __media_entity_setup_link()
844 	if (link->flags & MEDIA_LNK_FL_IMMUTABLE)  in __media_entity_setup_link()
845 		return link->flags == flags ? 0 : -EINVAL;  in __media_entity_setup_link()
847 	if (link->flags == flags)  in __media_entity_setup_link()
850 	source = link->source->entity;  in __media_entity_setup_link()
851 	sink = link->sink->entity;  in __media_entity_setup_link()
853 	if (!(link->flags & MEDIA_LNK_FL_DYNAMIC) &&  in __media_entity_setup_link()
860 		ret = mdev->ops->link_notify(link, flags,  in __media_entity_setup_link()
866 	ret = __media_entity_setup_link_notify(link, flags);  in __media_entity_setup_link()
869 		mdev->ops->link_notify(link, flags,  in __media_entity_setup_link()
876 int media_entity_setup_link(struct media_link *link, u32 flags)  in media_entity_setup_link()  argument
880 	mutex_lock(&link->graph_obj.mdev->graph_mutex);  in media_entity_setup_link()
881 	ret = __media_entity_setup_link(link, flags);  in media_entity_setup_link()
882 	mutex_unlock(&link->graph_obj.mdev->graph_mutex);  in media_entity_setup_link()
891 	struct media_link *link;  in media_entity_find_link()  local
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()
895 		    link->source->index == source->index &&  in media_entity_find_link()
896 		    link->sink->entity == sink->entity &&  in media_entity_find_link()
897 		    link->sink->index == sink->index)  in media_entity_find_link()
898 			return link;  in media_entity_find_link()
907 	struct media_link *link;  in media_entity_remote_pad()  local
909 	list_for_each_entry(link, &pad->entity->links, list) {  in media_entity_remote_pad()
910 		if (!(link->flags & MEDIA_LNK_FL_ENABLED))  in media_entity_remote_pad()
913 		if (link->source == pad)  in media_entity_remote_pad()
914 			return link->sink;  in media_entity_remote_pad()
916 		if (link->sink == pad)  in media_entity_remote_pad()
917 			return link->source;  in media_entity_remote_pad()
971 	struct media_link *link;  in media_create_intf_link()  local
973 	link = media_add_link(&intf->links);  in media_create_intf_link()
974 	if (link == NULL)  in media_create_intf_link()
977 	link->intf = intf;  in media_create_intf_link()
978 	link->entity = entity;  in media_create_intf_link()
979 	link->flags = flags | MEDIA_LNK_FL_INTERFACE_LINK;  in media_create_intf_link()
981 	/* Initialize graph object embedded at the new link */  in media_create_intf_link()
983 			&link->graph_obj);  in media_create_intf_link()
985 	return link;  in media_create_intf_link()
989 void __media_remove_intf_link(struct media_link *link)  in __media_remove_intf_link()  argument
991 	list_del(&link->list);  in __media_remove_intf_link()
992 	media_gobj_destroy(&link->graph_obj);  in __media_remove_intf_link()
993 	kfree(link);  in __media_remove_intf_link()
997 void media_remove_intf_link(struct media_link *link)  in media_remove_intf_link()  argument
999 	struct media_device *mdev = link->graph_obj.mdev;  in media_remove_intf_link()
1006 	__media_remove_intf_link(link);  in media_remove_intf_link()
1013 	struct media_link *link, *tmp;  in __media_remove_intf_links()  local
1015 	list_for_each_entry_safe(link, tmp, &intf->links, list)  in __media_remove_intf_links()
1016 		__media_remove_intf_link(link);  in __media_remove_intf_links()