Lines Matching +full:sink +full:- +full:only
1 // SPDX-License-Identifier: GPL-2.0-only
14 #include <media/media-entity.h>
15 #include <media/media-device.h>
27 return "intf-devnode"; in gobj_type()
35 switch (intf->type) { in intf_type()
37 return "dvb-frontend"; in intf_type()
39 return "dvb-demux"; in intf_type()
41 return "dvb-dvr"; in intf_type()
43 return "dvb-ca"; in intf_type()
45 return "dvb-net"; in intf_type()
47 return "v4l-video"; in intf_type()
49 return "v4l-vbi"; in intf_type()
51 return "v4l-radio"; in intf_type()
53 return "v4l-subdev"; in intf_type()
55 return "v4l-swradio"; in intf_type()
57 return "v4l-touch"; in intf_type()
59 return "unknown-intf"; in intf_type()
67 ent_enum->bmap = kcalloc(idx_max / BITS_PER_LONG, sizeof(long), in __media_entity_enum_init()
69 if (!ent_enum->bmap) in __media_entity_enum_init()
70 return -ENOMEM; in __media_entity_enum_init()
72 bitmap_zero(ent_enum->bmap, idx_max); in __media_entity_enum_init()
73 ent_enum->idx_max = idx_max; in __media_entity_enum_init()
81 kfree(ent_enum->bmap); in media_entity_enum_cleanup()
86 * dev_dbg_obj - Prints in debug mode a change on some object
91 * Enabled only if DEBUG or CONFIG_DYNAMIC_DEBUG. Otherwise, it
99 dev_dbg(gobj->mdev->dev, in dev_dbg_obj()
102 gobj_to_entity(gobj)->name); in dev_dbg_obj()
108 dev_dbg(gobj->mdev->dev, 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()
121 dev_dbg(gobj->mdev->dev, in dev_dbg_obj()
124 pad->flags & MEDIA_PAD_FL_SINK ? "sink " : "", in dev_dbg_obj()
125 pad->flags & MEDIA_PAD_FL_SOURCE ? "source " : "", in dev_dbg_obj()
126 pad->entity->name, pad->index); in dev_dbg_obj()
134 dev_dbg(gobj->mdev->dev, in dev_dbg_obj()
135 "%s id %u: intf_devnode %s - major: %d, minor: %d\n", in dev_dbg_obj()
138 devnode->major, devnode->minor); in dev_dbg_obj()
151 gobj->mdev = mdev; in media_gobj_create()
153 /* Create a per-type unique object ID */ in media_gobj_create()
154 gobj->id = media_gobj_gen_id(type, ++mdev->id); in media_gobj_create()
158 list_add_tail(&gobj->list, &mdev->entities); in media_gobj_create()
161 list_add_tail(&gobj->list, &mdev->pads); in media_gobj_create()
164 list_add_tail(&gobj->list, &mdev->links); in media_gobj_create()
167 list_add_tail(&gobj->list, &mdev->interfaces); in media_gobj_create()
171 mdev->topology_version++; in media_gobj_create()
179 if (gobj->mdev == NULL) in media_gobj_destroy()
184 gobj->mdev->topology_version++; in media_gobj_destroy()
187 list_del(&gobj->list); in media_gobj_destroy()
189 gobj->mdev = NULL; in media_gobj_destroy()
200 struct media_device *mdev = entity->graph_obj.mdev; in media_entity_pads_init()
204 return -E2BIG; 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()
210 mutex_lock(&mdev->graph_mutex); in media_entity_pads_init()
217 &entity->pads[i].graph_obj); in media_entity_pads_init()
221 mutex_unlock(&mdev->graph_mutex); in media_entity_pads_init()
227 /* -----------------------------------------------------------------------------
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()
244 if (graph->top == MEDIA_ENTITY_ENUM_MAX_DEPTH - 1) { in stack_push()
248 graph->top++; in stack_push()
249 graph->stack[graph->top].link = entity->links.next; in stack_push()
250 graph->stack[graph->top].entity = entity; in stack_push()
257 entity = graph->stack[graph->top].entity; in stack_pop()
258 graph->top--; in stack_pop()
263 #define link_top(en) ((en)->stack[(en)->top].link)
264 #define stack_top(en) ((en)->stack[(en)->top].entity)
267 * media_graph_walk_init - Allocate resources for graph walk
280 return media_entity_enum_init(&graph->ent_enum, mdev); in media_graph_walk_init()
285 * media_graph_walk_cleanup - Release resources related to graph walking
290 media_entity_enum_cleanup(&graph->ent_enum); in media_graph_walk_cleanup()
297 media_entity_enum_zero(&graph->ent_enum); in media_graph_walk_start()
298 media_entity_enum_set(&graph->ent_enum, entity); in media_graph_walk_start()
300 graph->top = 0; in media_graph_walk_start()
301 graph->stack[graph->top].entity = NULL; 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()
317 if (!(link->flags & MEDIA_LNK_FL_ENABLED)) { in media_graph_walk_iter()
318 link_top(graph) = link_top(graph)->next; in media_graph_walk_iter()
319 dev_dbg(entity->graph_obj.mdev->dev, 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()
330 if (media_entity_enum_test_and_set(&graph->ent_enum, next)) { in media_graph_walk_iter()
331 link_top(graph) = link_top(graph)->next; in media_graph_walk_iter()
332 dev_dbg(entity->graph_obj.mdev->dev, in media_graph_walk_iter()
334 next->name); in media_graph_walk_iter()
339 link_top(graph) = link_top(graph)->next; in media_graph_walk_iter()
341 dev_dbg(entity->graph_obj.mdev->dev, "walk: pushing '%s' on stack\n", in media_graph_walk_iter()
342 next->name); in media_graph_walk_iter()
357 while (link_top(graph) != &stack_top(graph)->links) 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()
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()
382 return -ENXIO; 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()
394 return -ENXIO; in media_entity_get_fwnode_pad()
396 if (!(entity->pads[ret].flags & direction_flags)) in media_entity_get_fwnode_pad()
397 return -ENXIO; in media_entity_get_fwnode_pad()
403 /* -----------------------------------------------------------------------------
410 struct media_device *mdev = entity->graph_obj.mdev; in __media_pipeline_start()
411 struct media_graph *graph = &pipe->graph; in __media_pipeline_start()
416 if (!pipe->streaming_count++) { in __media_pipeline_start()
417 ret = media_graph_walk_init(&pipe->graph, mdev); in __media_pipeline_start()
422 media_graph_walk_start(&pipe->graph, entity); 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()
433 entity_err->name); in __media_pipeline_start()
434 ret = -EBUSY; in __media_pipeline_start()
438 entity->pipe = pipe; in __media_pipeline_start()
440 /* Already streaming --- no need to check. */ 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()
452 ? link->sink : link->source; in __media_pipeline_start()
455 bitmap_clear(has_no_links, pad->index, 1); in __media_pipeline_start()
462 if (!(pad->flags & MEDIA_PAD_FL_MUST_CONNECT) || in __media_pipeline_start()
463 link->flags & MEDIA_LNK_FL_ENABLED) in __media_pipeline_start()
464 bitmap_set(active, pad->index, 1); 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()
475 if (ret < 0 && ret != -ENOIOCTLCMD) { in __media_pipeline_start()
476 dev_dbg(entity->graph_obj.mdev->dev, 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()
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()
489 ret = -ENOLINK; 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()
510 if (!WARN_ON_ONCE(entity_err->stream_count <= 0)) { in __media_pipeline_start()
511 entity_err->stream_count--; in __media_pipeline_start()
512 if (entity_err->stream_count == 0) in __media_pipeline_start()
513 entity_err->pipe = NULL; in __media_pipeline_start()
525 if (!--pipe->streaming_count) in __media_pipeline_start()
535 struct media_device *mdev = entity->graph_obj.mdev; in media_pipeline_start()
538 mutex_lock(&mdev->graph_mutex); in media_pipeline_start()
540 mutex_unlock(&mdev->graph_mutex); in media_pipeline_start()
547 struct media_graph *graph = &entity->pipe->graph; in __media_pipeline_stop()
548 struct media_pipeline *pipe = entity->pipe; 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()
568 if (!--pipe->streaming_count) in __media_pipeline_stop()
576 struct media_device *mdev = entity->graph_obj.mdev; in media_pipeline_stop()
578 mutex_lock(&mdev->graph_mutex); in media_pipeline_stop()
580 mutex_unlock(&mdev->graph_mutex); in media_pipeline_stop()
584 /* -----------------------------------------------------------------------------
596 list_add_tail(&link->list, head); in media_add_link()
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()
612 list_for_each_entry_safe(rlink, tmp, &remote->links, list) { 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()
617 remote->num_backlinks--; in __media_entity_remove_link()
620 list_del(&rlink->list); in __media_entity_remove_link()
621 media_gobj_destroy(&rlink->graph_obj); in __media_entity_remove_link()
624 if (--remote->num_links == 0) 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()
639 return -EINVAL; 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()
654 return -EINVAL; in media_get_pad_index()
660 struct media_entity *sink, u16 sink_pad, u32 flags) in media_create_pad_link() argument
665 if (WARN_ON(!source || !sink) || in media_create_pad_link()
666 WARN_ON(source_pad >= source->num_pads) || in media_create_pad_link()
667 WARN_ON(sink_pad >= sink->num_pads)) in media_create_pad_link()
668 return -EINVAL; in media_create_pad_link()
669 if (WARN_ON(!(source->pads[source_pad].flags & MEDIA_PAD_FL_SOURCE))) in media_create_pad_link()
670 return -EINVAL; in media_create_pad_link()
671 if (WARN_ON(!(sink->pads[sink_pad].flags & MEDIA_PAD_FL_SINK))) in media_create_pad_link()
672 return -EINVAL; in media_create_pad_link()
674 link = media_add_link(&source->links); in media_create_pad_link()
676 return -ENOMEM; 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()
683 media_gobj_create(source->graph_obj.mdev, MEDIA_GRAPH_LINK, in media_create_pad_link()
684 &link->graph_obj); in media_create_pad_link()
689 backlink = media_add_link(&sink->links); in media_create_pad_link()
692 return -ENOMEM; in media_create_pad_link()
695 backlink->source = &source->pads[source_pad]; in media_create_pad_link()
696 backlink->sink = &sink->pads[sink_pad]; in media_create_pad_link()
697 backlink->flags = flags; in media_create_pad_link()
698 backlink->is_backlink = true; in media_create_pad_link()
701 media_gobj_create(sink->graph_obj.mdev, MEDIA_GRAPH_LINK, in media_create_pad_link()
702 &backlink->graph_obj); in media_create_pad_link()
704 link->reverse = backlink; in media_create_pad_link()
705 backlink->reverse = link; in media_create_pad_link()
707 sink->num_backlinks++; in media_create_pad_link()
708 sink->num_links++; in media_create_pad_link()
709 source->num_links++; in media_create_pad_link()
720 struct media_entity *sink, in media_create_pad_links() argument
730 if (source && sink) in media_create_pad_links()
732 sink, sink_pad, flags); in media_create_pad_links()
735 if (!source && !sink) { in media_create_pad_links()
739 if (source->function != source_function) in media_create_pad_links()
741 media_device_for_each_entity(sink, mdev) { in media_create_pad_links()
742 if (sink->function != sink_function) in media_create_pad_links()
745 sink, sink_pad, in media_create_pad_links()
763 if (entity->function != function) in media_create_pad_links()
771 sink, sink_pad, flags); in media_create_pad_links()
784 list_for_each_entry_safe(link, tmp, &entity->links, list) 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()
794 struct media_device *mdev = entity->graph_obj.mdev; in media_entity_remove_links()
800 mutex_lock(&mdev->graph_mutex); in media_entity_remove_links()
802 mutex_unlock(&mdev->graph_mutex); in media_entity_remove_links()
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()
813 if (ret < 0 && ret != -ENOIOCTLCMD) 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()
818 if (ret < 0 && ret != -ENOIOCTLCMD) { 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()
834 struct media_entity *source, *sink; in __media_entity_setup_link() local
835 int ret = -EBUSY; in __media_entity_setup_link()
838 return -EINVAL; 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()
842 return -EINVAL; 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()
854 (source->stream_count || sink->stream_count)) in __media_entity_setup_link()
855 return -EBUSY; in __media_entity_setup_link()
857 mdev = source->graph_obj.mdev; in __media_entity_setup_link()
859 if (mdev->ops && mdev->ops->link_notify) { in __media_entity_setup_link()
860 ret = mdev->ops->link_notify(link, flags, in __media_entity_setup_link()
868 if (mdev->ops && mdev->ops->link_notify) in __media_entity_setup_link()
869 mdev->ops->link_notify(link, flags, in __media_entity_setup_link()
880 mutex_lock(&link->graph_obj.mdev->graph_mutex); in media_entity_setup_link()
882 mutex_unlock(&link->graph_obj.mdev->graph_mutex); in media_entity_setup_link()
889 media_entity_find_link(struct media_pad *source, struct media_pad *sink) in media_entity_find_link() argument
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()
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()
930 intf->type = intf_type; in media_interface_init()
931 intf->flags = flags; in media_interface_init()
932 INIT_LIST_HEAD(&intf->links); in media_interface_init()
934 media_gobj_create(mdev, gobj_type, &intf->graph_obj); in media_interface_init()
949 devnode->major = major; in media_devnode_create()
950 devnode->minor = minor; in media_devnode_create()
952 media_interface_init(mdev, &devnode->intf, MEDIA_GRAPH_INTF_DEVNODE, in media_devnode_create()
961 media_remove_intf_links(&devnode->intf); in media_devnode_remove()
962 media_gobj_destroy(&devnode->intf.graph_obj); in media_devnode_remove()
973 link = media_add_link(&intf->links); 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()
982 media_gobj_create(intf->graph_obj.mdev, MEDIA_GRAPH_LINK, in media_create_intf_link()
983 &link->graph_obj); in media_create_intf_link()
991 list_del(&link->list); in __media_remove_intf_link()
992 media_gobj_destroy(&link->graph_obj); in __media_remove_intf_link()
999 struct media_device *mdev = link->graph_obj.mdev; in media_remove_intf_link()
1005 mutex_lock(&mdev->graph_mutex); in media_remove_intf_link()
1007 mutex_unlock(&mdev->graph_mutex); in media_remove_intf_link()
1015 list_for_each_entry_safe(link, tmp, &intf->links, list) in __media_remove_intf_links()
1023 struct media_device *mdev = intf->graph_obj.mdev; in media_remove_intf_links()
1029 mutex_lock(&mdev->graph_mutex); in media_remove_intf_links()
1031 mutex_unlock(&mdev->graph_mutex); in media_remove_intf_links()