16 #include <media/media-entity.h>
25 	struct media_entity *entity;  in v4l2_mc_create_media_graph()  local
36 	media_device_for_each_entity(entity, mdev) {  in v4l2_mc_create_media_graph()
37 		switch (entity->function) {  in v4l2_mc_create_media_graph()
39 			if_vid = entity;  in v4l2_mc_create_media_graph()
42 			if_aud = entity;  in v4l2_mc_create_media_graph()
45 			tuner = entity;  in v4l2_mc_create_media_graph()
48 			decoder = entity;  in v4l2_mc_create_media_graph()
51 			io_v4l = entity;  in v4l2_mc_create_media_graph()
54 			io_vbi = entity;  in v4l2_mc_create_media_graph()
57 			io_swradio = entity;  in v4l2_mc_create_media_graph()
65 	/* It should have at least one I/O entity */  in v4l2_mc_create_media_graph()
67 		dev_warn(mdev->dev, "Didn't find any I/O entity\n");  in v4l2_mc_create_media_graph()
73 	 * connected directly to the I/O entity. All dirty details, like  in v4l2_mc_create_media_graph()
84 		media_device_for_each_entity(entity, mdev) {  in v4l2_mc_create_media_graph()
85 			if (entity->function != MEDIA_ENT_F_CAM_SENSOR)  in v4l2_mc_create_media_graph()
87 			ret = media_create_pad_link(entity, 0,  in v4l2_mc_create_media_graph()
240 	media_device_for_each_entity(entity, mdev) {  in v4l2_mc_create_media_graph()
241 		switch (entity->function) {  in v4l2_mc_create_media_graph()
251 			ret = media_create_pad_link(entity, 0, tuner,  in v4l2_mc_create_media_graph()
264 			ret = media_create_pad_link(entity, 0, decoder,  in v4l2_mc_create_media_graph()
283 	struct media_device *mdev = vdev->entity.graph_obj.mdev;  in v4l_enable_media_source()
292 	err = mdev->enable_source(&vdev->entity, &vdev->pipe);  in v4l_enable_media_source()
303 	struct media_device *mdev = vdev->entity.graph_obj.mdev;  in v4l_disable_media_source()
308 			mdev->disable_source(&vdev->entity);  in v4l_disable_media_source()
337 		src_idx = media_entity_get_fwnode_pad(&src_sd->entity,  in v4l2_create_fwnode_links_to_pad()
357 		sink_idx = media_entity_get_fwnode_pad(sink->entity,  in v4l2_create_fwnode_links_to_pad()
372 		 * entity, and the sink endpoint corresponds to the sink  in v4l2_create_fwnode_links_to_pad()
377 		src = &src_sd->entity.pads[src_idx];  in v4l2_create_fwnode_links_to_pad()
383 				src_sd->entity.name, src_idx,  in v4l2_create_fwnode_links_to_pad()
384 				sink->entity->name, sink_idx);  in v4l2_create_fwnode_links_to_pad()
389 			src_sd->entity.name, src_idx,  in v4l2_create_fwnode_links_to_pad()
390 			sink->entity->name, sink_idx);  in v4l2_create_fwnode_links_to_pad()
392 		ret = media_create_pad_link(&src_sd->entity, src_idx,  in v4l2_create_fwnode_links_to_pad()
393 					    sink->entity, sink_idx, flags);  in v4l2_create_fwnode_links_to_pad()
397 				src_sd->entity.name, src_idx,  in v4l2_create_fwnode_links_to_pad()
398 				sink->entity->name, sink_idx, ret);  in v4l2_create_fwnode_links_to_pad()
414 	for (i = 0; i < sink_sd->entity.num_pads; i++) {  in v4l2_create_fwnode_links()
415 		struct media_pad *pad = &sink_sd->entity.pads[i];  in v4l2_create_fwnode_links()
436  * To achieve this use the entity use_count field to track the number of users.
453  * @entity: The entity
457 static int pipeline_pm_use_count(struct media_entity *entity,  in pipeline_pm_use_count()  argument
462 	media_graph_walk_start(graph, entity);  in pipeline_pm_use_count()
464 	while ((entity = media_graph_walk_next(graph))) {  in pipeline_pm_use_count()
465 		if (is_media_entity_v4l2_video_device(entity))  in pipeline_pm_use_count()
466 			use += entity->use_count;  in pipeline_pm_use_count()
473  * pipeline_pm_power_one - Apply power change to an entity
474  * @entity: The entity
477  * Change the entity use count by @change. If the entity is a subdev update its
483 static int pipeline_pm_power_one(struct media_entity *entity, int change)  in pipeline_pm_power_one()  argument
488 	subdev = is_media_entity_v4l2_subdev(entity)  in pipeline_pm_power_one()
489 	       ? media_entity_to_v4l2_subdev(entity) : NULL;  in pipeline_pm_power_one()
491 	if (entity->use_count == 0 && change > 0 && subdev != NULL) {  in pipeline_pm_power_one()
497 	entity->use_count += change;  in pipeline_pm_power_one()
498 	WARN_ON(entity->use_count < 0);  in pipeline_pm_power_one()
500 	if (entity->use_count == 0 && change < 0 && subdev != NULL)  in pipeline_pm_power_one()
508  * @entity: The entity
516 static int pipeline_pm_power(struct media_entity *entity, int change,  in pipeline_pm_power()  argument
519 	struct media_entity *first = entity;  in pipeline_pm_power()
525 	media_graph_walk_start(graph, entity);  in pipeline_pm_power()
527 	while (!ret && (entity = media_graph_walk_next(graph)))  in pipeline_pm_power()
528 		if (is_media_entity_v4l2_subdev(entity))  in pipeline_pm_power()
529 			ret = pipeline_pm_power_one(entity, change);  in pipeline_pm_power()
537 	       && first != entity)  in pipeline_pm_power()
544 static int v4l2_pipeline_pm_use(struct media_entity *entity, unsigned int use)  in v4l2_pipeline_pm_use()  argument
546 	struct media_device *mdev = entity->graph_obj.mdev;  in v4l2_pipeline_pm_use()
553 	entity->use_count += change;  in v4l2_pipeline_pm_use()
554 	WARN_ON(entity->use_count < 0);  in v4l2_pipeline_pm_use()
557 	ret = pipeline_pm_power(entity, change, &mdev->pm_count_walk);  in v4l2_pipeline_pm_use()
559 		entity->use_count -= change;  in v4l2_pipeline_pm_use()
566 int v4l2_pipeline_pm_get(struct media_entity *entity)  in v4l2_pipeline_pm_get()  argument
568 	return v4l2_pipeline_pm_use(entity, 1);  in v4l2_pipeline_pm_get()
572 void v4l2_pipeline_pm_put(struct media_entity *entity)  in v4l2_pipeline_pm_put()  argument
575 	WARN_ON(v4l2_pipeline_pm_use(entity, 0));  in v4l2_pipeline_pm_put()
583 	struct media_entity *source = link->source->entity;  in v4l2_pipeline_link_notify()
584 	struct media_entity *sink = link->sink->entity;  in v4l2_pipeline_link_notify()