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()
229 	media_device_for_each_entity(entity, mdev) {  in v4l2_mc_create_media_graph()
230 		switch (entity->function) {  in v4l2_mc_create_media_graph()
240 			ret = media_create_pad_link(entity, 0, tuner,  in v4l2_mc_create_media_graph()
252 			ret = media_create_pad_link(entity, 0, decoder,  in v4l2_mc_create_media_graph()
271 	struct media_device *mdev = vdev->entity.graph_obj.mdev;  in v4l_enable_media_source()
280 	err = mdev->enable_source(&vdev->entity, &vdev->pipe);  in v4l_enable_media_source()
291 	struct media_device *mdev = vdev->entity.graph_obj.mdev;  in v4l_disable_media_source()
296 			mdev->disable_source(&vdev->entity);  in v4l_disable_media_source()
319 	    !is_media_entity_v4l2_subdev(sink->entity))  in v4l2_create_fwnode_links_to_pad()
322 	sink_sd = media_entity_to_v4l2_subdev(sink->entity);  in v4l2_create_fwnode_links_to_pad()
329 		src_idx = media_entity_get_fwnode_pad(&src_sd->entity,  in v4l2_create_fwnode_links_to_pad()
343 		sink_idx = media_entity_get_fwnode_pad(&sink_sd->entity,  in v4l2_create_fwnode_links_to_pad()
354 		 * entity, and the sink endpoint corresponds to the sink  in v4l2_create_fwnode_links_to_pad()
359 		src = &src_sd->entity.pads[src_idx];  in v4l2_create_fwnode_links_to_pad()
366 			src_sd->entity.name, src_idx,  in v4l2_create_fwnode_links_to_pad()
367 			sink_sd->entity.name, sink_idx);  in v4l2_create_fwnode_links_to_pad()
369 		ret = media_create_pad_link(&src_sd->entity, src_idx,  in v4l2_create_fwnode_links_to_pad()
370 					    &sink_sd->entity, sink_idx, flags);  in v4l2_create_fwnode_links_to_pad()
374 				src_sd->entity.name, src_idx,  in v4l2_create_fwnode_links_to_pad()
375 				sink_sd->entity.name, sink_idx, ret);  in v4l2_create_fwnode_links_to_pad()
391 	for (i = 0; i < sink_sd->entity.num_pads; i++) {  in v4l2_create_fwnode_links()
392 		struct media_pad *pad = &sink_sd->entity.pads[i];  in v4l2_create_fwnode_links()
413  * To achieve this use the entity use_count field to track the number of users.
430  * @entity: The entity
434 static int pipeline_pm_use_count(struct media_entity *entity,  in pipeline_pm_use_count()  argument
439 	media_graph_walk_start(graph, entity);  in pipeline_pm_use_count()
441 	while ((entity = media_graph_walk_next(graph))) {  in pipeline_pm_use_count()
442 		if (is_media_entity_v4l2_video_device(entity))  in pipeline_pm_use_count()
443 			use += entity->use_count;  in pipeline_pm_use_count()
450  * pipeline_pm_power_one - Apply power change to an entity
451  * @entity: The entity
454  * Change the entity use count by @change. If the entity is a subdev update its
460 static int pipeline_pm_power_one(struct media_entity *entity, int change)  in pipeline_pm_power_one()  argument
465 	subdev = is_media_entity_v4l2_subdev(entity)  in pipeline_pm_power_one()
466 	       ? media_entity_to_v4l2_subdev(entity) : NULL;  in pipeline_pm_power_one()
468 	if (entity->use_count == 0 && change > 0 && subdev != NULL) {  in pipeline_pm_power_one()
474 	entity->use_count += change;  in pipeline_pm_power_one()
475 	WARN_ON(entity->use_count < 0);  in pipeline_pm_power_one()
477 	if (entity->use_count == 0 && change < 0 && subdev != NULL)  in pipeline_pm_power_one()
485  * @entity: The entity
493 static int pipeline_pm_power(struct media_entity *entity, int change,  in pipeline_pm_power()  argument
496 	struct media_entity *first = entity;  in pipeline_pm_power()
502 	media_graph_walk_start(graph, entity);  in pipeline_pm_power()
504 	while (!ret && (entity = media_graph_walk_next(graph)))  in pipeline_pm_power()
505 		if (is_media_entity_v4l2_subdev(entity))  in pipeline_pm_power()
506 			ret = pipeline_pm_power_one(entity, change);  in pipeline_pm_power()
514 	       && first != entity)  in pipeline_pm_power()
521 static int v4l2_pipeline_pm_use(struct media_entity *entity, unsigned int use)  in v4l2_pipeline_pm_use()  argument
523 	struct media_device *mdev = entity->graph_obj.mdev;  in v4l2_pipeline_pm_use()
530 	entity->use_count += change;  in v4l2_pipeline_pm_use()
531 	WARN_ON(entity->use_count < 0);  in v4l2_pipeline_pm_use()
534 	ret = pipeline_pm_power(entity, change, &mdev->pm_count_walk);  in v4l2_pipeline_pm_use()
536 		entity->use_count -= change;  in v4l2_pipeline_pm_use()
543 int v4l2_pipeline_pm_get(struct media_entity *entity)  in v4l2_pipeline_pm_get()  argument
545 	return v4l2_pipeline_pm_use(entity, 1);  in v4l2_pipeline_pm_get()
549 void v4l2_pipeline_pm_put(struct media_entity *entity)  in v4l2_pipeline_pm_put()  argument
552 	WARN_ON(v4l2_pipeline_pm_use(entity, 0));  in v4l2_pipeline_pm_put()
560 	struct media_entity *source = link->source->entity;  in v4l2_pipeline_link_notify()
561 	struct media_entity *sink = link->sink->entity;  in v4l2_pipeline_link_notify()