220 bool drm_bridge_enter(struct drm_bridge *bridge, int *idx)  in drm_bridge_enter()  argument
224 	if (bridge->unplugged) {  in drm_bridge_enter()
257 void drm_bridge_unplug(struct drm_bridge *bridge)  in drm_bridge_unplug()  argument
259 	bridge->unplugged = true;  in drm_bridge_unplug()
263 	drm_bridge_remove(bridge);  in drm_bridge_unplug()
269 	struct drm_bridge *bridge = container_of(kref, struct drm_bridge, refcount);  in __drm_bridge_free()  local
272 	list_del(&bridge->list);  in __drm_bridge_free()
275 	if (bridge->funcs->destroy)  in __drm_bridge_free()
276 		bridge->funcs->destroy(bridge);  in __drm_bridge_free()
278 	drm_bridge_put(bridge->next_bridge);  in __drm_bridge_free()
280 	kfree(bridge->container);  in __drm_bridge_free()
292 struct drm_bridge *drm_bridge_get(struct drm_bridge *bridge)  in drm_bridge_get()  argument
294 	if (bridge)  in drm_bridge_get()
295 		kref_get(&bridge->refcount);  in drm_bridge_get()
297 	return bridge;  in drm_bridge_get()
308 void drm_bridge_put(struct drm_bridge *bridge)  in drm_bridge_put()  argument
310 	if (bridge)  in drm_bridge_put()
311 		kref_put(&bridge->refcount, __drm_bridge_free);  in drm_bridge_put()
325 	struct drm_bridge *bridge = (struct drm_bridge *)data;  in drm_bridge_put_void()  local
327 	drm_bridge_put(bridge);  in drm_bridge_put_void()
334 	struct drm_bridge *bridge;  in __devm_drm_bridge_alloc()  local
346 	bridge = container + offset;  in __devm_drm_bridge_alloc()
347 	INIT_LIST_HEAD(&bridge->list);  in __devm_drm_bridge_alloc()
348 	bridge->container = container;  in __devm_drm_bridge_alloc()
349 	bridge->funcs = funcs;  in __devm_drm_bridge_alloc()
350 	kref_init(&bridge->refcount);  in __devm_drm_bridge_alloc()
352 	err = devm_add_action_or_reset(dev, drm_bridge_put_void, bridge);  in __devm_drm_bridge_alloc()
371 void drm_bridge_add(struct drm_bridge *bridge)  in drm_bridge_add()  argument
373 	if (!bridge->container)  in drm_bridge_add()
376 	drm_bridge_get(bridge);  in drm_bridge_add()
383 	if (!list_empty(&bridge->list))  in drm_bridge_add()
384 		list_del_init(&bridge->list);  in drm_bridge_add()
386 	mutex_init(&bridge->hpd_mutex);  in drm_bridge_add()
388 	if (bridge->ops & DRM_BRIDGE_OP_HDMI)  in drm_bridge_add()
389 		bridge->ycbcr_420_allowed = !!(bridge->supported_formats &  in drm_bridge_add()
393 	list_add_tail(&bridge->list, &bridge_list);  in drm_bridge_add()
398 static void drm_bridge_remove_void(void *bridge)  in drm_bridge_remove_void()  argument
400 	drm_bridge_remove(bridge);  in drm_bridge_remove_void()
414 int devm_drm_bridge_add(struct device *dev, struct drm_bridge *bridge)  in devm_drm_bridge_add()  argument
416 	drm_bridge_add(bridge);  in devm_drm_bridge_add()
417 	return devm_add_action_or_reset(dev, drm_bridge_remove_void, bridge);  in devm_drm_bridge_add()
431 void drm_bridge_remove(struct drm_bridge *bridge)  in drm_bridge_remove()  argument
434 	list_move_tail(&bridge->list, &bridge_lingering_list);  in drm_bridge_remove()
437 	mutex_destroy(&bridge->hpd_mutex);  in drm_bridge_remove()
439 	drm_bridge_put(bridge);  in drm_bridge_remove()
446 	struct drm_bridge *bridge = drm_priv_to_bridge(obj);  in drm_bridge_atomic_duplicate_priv_state()  local
449 	state = bridge->funcs->atomic_duplicate_state(bridge);  in drm_bridge_atomic_duplicate_priv_state()
458 	struct drm_bridge *bridge = drm_priv_to_bridge(obj);  in drm_bridge_atomic_destroy_priv_state()  local
460 	bridge->funcs->atomic_destroy_state(bridge, state);  in drm_bridge_atomic_destroy_priv_state()
468 static bool drm_bridge_is_atomic(struct drm_bridge *bridge)  in drm_bridge_is_atomic()  argument
470 	return bridge->funcs->atomic_reset != NULL;  in drm_bridge_is_atomic()
499 int drm_bridge_attach(struct drm_encoder *encoder, struct drm_bridge *bridge,  in drm_bridge_attach()  argument
505 	if (!encoder || !bridge)  in drm_bridge_attach()
508 	if (!bridge->container)  in drm_bridge_attach()
511 	if (list_empty(&bridge->list))  in drm_bridge_attach()
514 	drm_bridge_get(bridge);  in drm_bridge_attach()
521 	if (bridge->dev) {  in drm_bridge_attach()
526 	bridge->dev = encoder->dev;  in drm_bridge_attach()
527 	bridge->encoder = encoder;  in drm_bridge_attach()
530 		list_add(&bridge->chain_node, &previous->chain_node);  in drm_bridge_attach()
532 		list_add(&bridge->chain_node, &encoder->bridge_chain);  in drm_bridge_attach()
534 	if (bridge->funcs->attach) {  in drm_bridge_attach()
535 		ret = bridge->funcs->attach(bridge, encoder, flags);  in drm_bridge_attach()
540 	if (drm_bridge_is_atomic(bridge)) {  in drm_bridge_attach()
543 		state = bridge->funcs->atomic_reset(bridge);  in drm_bridge_attach()
549 		drm_atomic_private_obj_init(bridge->dev, &bridge->base,  in drm_bridge_attach()
557 	if (bridge->funcs->detach)  in drm_bridge_attach()
558 		bridge->funcs->detach(bridge);  in drm_bridge_attach()
561 	bridge->dev = NULL;  in drm_bridge_attach()
562 	bridge->encoder = NULL;  in drm_bridge_attach()
563 	list_del(&bridge->chain_node);  in drm_bridge_attach()
567 			  bridge->of_node, encoder->name, ret);  in drm_bridge_attach()
571 			      bridge->of_node, encoder->name);  in drm_bridge_attach()
574 	drm_bridge_put(bridge);  in drm_bridge_attach()
579 void drm_bridge_detach(struct drm_bridge *bridge)  in drm_bridge_detach()  argument
581 	if (WARN_ON(!bridge))  in drm_bridge_detach()
584 	if (WARN_ON(!bridge->dev))  in drm_bridge_detach()
587 	if (drm_bridge_is_atomic(bridge))  in drm_bridge_detach()
588 		drm_atomic_private_obj_fini(&bridge->base);  in drm_bridge_detach()
590 	if (bridge->funcs->detach)  in drm_bridge_detach()
591 		bridge->funcs->detach(bridge);  in drm_bridge_detach()
593 	list_del(&bridge->chain_node);  in drm_bridge_detach()
594 	bridge->dev = NULL;  in drm_bridge_detach()
595 	drm_bridge_put(bridge);  in drm_bridge_detach()
704 drm_bridge_chain_mode_valid(struct drm_bridge *bridge,  in drm_bridge_chain_mode_valid()  argument
710 	if (!bridge)  in drm_bridge_chain_mode_valid()
713 	encoder = bridge->encoder;  in drm_bridge_chain_mode_valid()
714 	list_for_each_entry_from(bridge, &encoder->bridge_chain, chain_node) {  in drm_bridge_chain_mode_valid()
717 		if (!bridge->funcs->mode_valid)  in drm_bridge_chain_mode_valid()
720 		ret = bridge->funcs->mode_valid(bridge, info, mode);  in drm_bridge_chain_mode_valid()
741 void drm_bridge_chain_mode_set(struct drm_bridge *bridge,  in drm_bridge_chain_mode_set()  argument
747 	if (!bridge)  in drm_bridge_chain_mode_set()
750 	encoder = bridge->encoder;  in drm_bridge_chain_mode_set()
751 	list_for_each_entry_from(bridge, &encoder->bridge_chain, chain_node) {  in drm_bridge_chain_mode_set()
752 		if (bridge->funcs->mode_set)  in drm_bridge_chain_mode_set()
753 			bridge->funcs->mode_set(bridge, mode, adjusted_mode);  in drm_bridge_chain_mode_set()
770 void drm_atomic_bridge_chain_disable(struct drm_bridge *bridge,  in drm_atomic_bridge_chain_disable()  argument
776 	if (!bridge)  in drm_atomic_bridge_chain_disable()
779 	encoder = bridge->encoder;  in drm_atomic_bridge_chain_disable()
787 		if (iter == bridge)  in drm_atomic_bridge_chain_disable()
793 static void drm_atomic_bridge_call_post_disable(struct drm_bridge *bridge,  in drm_atomic_bridge_call_post_disable()  argument
796 	if (state && bridge->funcs->atomic_post_disable)  in drm_atomic_bridge_call_post_disable()
797 		bridge->funcs->atomic_post_disable(bridge, state);  in drm_atomic_bridge_call_post_disable()
798 	else if (bridge->funcs->post_disable)  in drm_atomic_bridge_call_post_disable()
799 		bridge->funcs->post_disable(bridge);  in drm_atomic_bridge_call_post_disable()
826 void drm_atomic_bridge_chain_post_disable(struct drm_bridge *bridge,  in drm_atomic_bridge_chain_post_disable()  argument
832 	if (!bridge)  in drm_atomic_bridge_chain_post_disable()
835 	encoder = bridge->encoder;  in drm_atomic_bridge_chain_post_disable()
837 	list_for_each_entry_from(bridge, &encoder->bridge_chain, chain_node) {  in drm_atomic_bridge_chain_post_disable()
840 		if (!list_is_last(&bridge->chain_node, &encoder->bridge_chain)) {  in drm_atomic_bridge_chain_post_disable()
841 			next = list_next_entry(bridge, chain_node);  in drm_atomic_bridge_chain_post_disable()
870 					if (next == bridge)  in drm_atomic_bridge_chain_post_disable()
879 		drm_atomic_bridge_call_post_disable(bridge, state);  in drm_atomic_bridge_chain_post_disable()
883 			bridge = limit;  in drm_atomic_bridge_chain_post_disable()
888 static void drm_atomic_bridge_call_pre_enable(struct drm_bridge *bridge,  in drm_atomic_bridge_call_pre_enable()  argument
891 	if (state && bridge->funcs->atomic_pre_enable)  in drm_atomic_bridge_call_pre_enable()
892 		bridge->funcs->atomic_pre_enable(bridge, state);  in drm_atomic_bridge_call_pre_enable()
893 	else if (bridge->funcs->pre_enable)  in drm_atomic_bridge_call_pre_enable()
894 		bridge->funcs->pre_enable(bridge);  in drm_atomic_bridge_call_pre_enable()
920 void drm_atomic_bridge_chain_pre_enable(struct drm_bridge *bridge,  in drm_atomic_bridge_chain_pre_enable()  argument
926 	if (!bridge)  in drm_atomic_bridge_chain_pre_enable()
929 	encoder = bridge->encoder;  in drm_atomic_bridge_chain_pre_enable()
934 			limit = bridge;  in drm_atomic_bridge_chain_pre_enable()
938 				if (next == bridge)  in drm_atomic_bridge_chain_pre_enable()
970 		if (iter == bridge)  in drm_atomic_bridge_chain_pre_enable()
988 void drm_atomic_bridge_chain_enable(struct drm_bridge *bridge,  in drm_atomic_bridge_chain_enable()  argument
993 	if (!bridge)  in drm_atomic_bridge_chain_enable()
996 	encoder = bridge->encoder;  in drm_atomic_bridge_chain_enable()
997 	list_for_each_entry_from(bridge, &encoder->bridge_chain, chain_node) {  in drm_atomic_bridge_chain_enable()
998 		if (bridge->funcs->atomic_enable) {  in drm_atomic_bridge_chain_enable()
999 			bridge->funcs->atomic_enable(bridge, state);  in drm_atomic_bridge_chain_enable()
1000 		} else if (bridge->funcs->enable) {  in drm_atomic_bridge_chain_enable()
1001 			bridge->funcs->enable(bridge);  in drm_atomic_bridge_chain_enable()
1007 static int drm_atomic_bridge_check(struct drm_bridge *bridge,  in drm_atomic_bridge_check()  argument
1011 	if (bridge->funcs->atomic_check) {  in drm_atomic_bridge_check()
1016 							       bridge);  in drm_atomic_bridge_check()
1020 		ret = bridge->funcs->atomic_check(bridge, bridge_state,  in drm_atomic_bridge_check()
1024 	} else if (bridge->funcs->mode_fixup) {  in drm_atomic_bridge_check()
1025 		if (!bridge->funcs->mode_fixup(bridge, &crtc_state->mode,  in drm_atomic_bridge_check()
1154 drm_atomic_bridge_chain_select_bus_fmts(struct drm_bridge *bridge,  in drm_atomic_bridge_chain_select_bus_fmts()  argument
1159 	struct drm_encoder *encoder = bridge->encoder;  in drm_atomic_bridge_chain_select_bus_fmts()
1204 		ret = select_bus_fmt_recursive(bridge, last_bridge, crtc_state,  in drm_atomic_bridge_chain_select_bus_fmts()
1216 drm_atomic_bridge_propagate_bus_flags(struct drm_bridge *bridge,  in drm_atomic_bridge_propagate_bus_flags()  argument
1223 	bridge_state = drm_atomic_get_new_bridge_state(state, bridge);  in drm_atomic_bridge_propagate_bus_flags()
1229 	struct drm_bridge *next_bridge __free(drm_bridge_put) = drm_bridge_get_next_bridge(bridge);  in drm_atomic_bridge_propagate_bus_flags()
1280 int drm_atomic_bridge_chain_check(struct drm_bridge *bridge,  in drm_atomic_bridge_chain_check()  argument
1289 	if (!bridge)  in drm_atomic_bridge_chain_check()
1292 	ret = drm_atomic_bridge_chain_select_bus_fmts(bridge, crtc_state,  in drm_atomic_bridge_chain_check()
1297 	encoder = bridge->encoder;  in drm_atomic_bridge_chain_check()
1315 		if (iter == bridge)  in drm_atomic_bridge_chain_check()
1338 drm_bridge_detect(struct drm_bridge *bridge, struct drm_connector *connector)  in drm_bridge_detect()  argument
1340 	if (!(bridge->ops & DRM_BRIDGE_OP_DETECT))  in drm_bridge_detect()
1343 	return bridge->funcs->detect(bridge, connector);  in drm_bridge_detect()
1361 int drm_bridge_get_modes(struct drm_bridge *bridge,  in drm_bridge_get_modes()  argument
1364 	if (!(bridge->ops & DRM_BRIDGE_OP_MODES))  in drm_bridge_get_modes()
1367 	return bridge->funcs->get_modes(bridge, connector);  in drm_bridge_get_modes()
1383 const struct drm_edid *drm_bridge_edid_read(struct drm_bridge *bridge,  in drm_bridge_edid_read()  argument
1386 	if (!(bridge->ops & DRM_BRIDGE_OP_EDID))  in drm_bridge_edid_read()
1389 	return bridge->funcs->edid_read(bridge, connector);  in drm_bridge_edid_read()
1411 void drm_bridge_hpd_enable(struct drm_bridge *bridge,  in drm_bridge_hpd_enable()  argument
1416 	if (!(bridge->ops & DRM_BRIDGE_OP_HPD))  in drm_bridge_hpd_enable()
1419 	mutex_lock(&bridge->hpd_mutex);  in drm_bridge_hpd_enable()
1421 	if (WARN(bridge->hpd_cb, "Hot plug detection already enabled\n"))  in drm_bridge_hpd_enable()
1424 	bridge->hpd_cb = cb;  in drm_bridge_hpd_enable()
1425 	bridge->hpd_data = data;  in drm_bridge_hpd_enable()
1427 	if (bridge->funcs->hpd_enable)  in drm_bridge_hpd_enable()
1428 		bridge->funcs->hpd_enable(bridge);  in drm_bridge_hpd_enable()
1431 	mutex_unlock(&bridge->hpd_mutex);  in drm_bridge_hpd_enable()
1447 void drm_bridge_hpd_disable(struct drm_bridge *bridge)  in drm_bridge_hpd_disable()  argument
1449 	if (!(bridge->ops & DRM_BRIDGE_OP_HPD))  in drm_bridge_hpd_disable()
1452 	mutex_lock(&bridge->hpd_mutex);  in drm_bridge_hpd_disable()
1453 	if (bridge->funcs->hpd_disable)  in drm_bridge_hpd_disable()
1454 		bridge->funcs->hpd_disable(bridge);  in drm_bridge_hpd_disable()
1456 	bridge->hpd_cb = NULL;  in drm_bridge_hpd_disable()
1457 	bridge->hpd_data = NULL;  in drm_bridge_hpd_disable()
1458 	mutex_unlock(&bridge->hpd_mutex);  in drm_bridge_hpd_disable()
1473 void drm_bridge_hpd_notify(struct drm_bridge *bridge,  in drm_bridge_hpd_notify()  argument
1476 	mutex_lock(&bridge->hpd_mutex);  in drm_bridge_hpd_notify()
1477 	if (bridge->hpd_cb)  in drm_bridge_hpd_notify()
1478 		bridge->hpd_cb(bridge->hpd_data, status);  in drm_bridge_hpd_notify()
1479 	mutex_unlock(&bridge->hpd_mutex);  in drm_bridge_hpd_notify()
1497 	struct drm_bridge *bridge;  in of_drm_find_and_get_bridge()  local
1500 		list_for_each_entry(bridge, &bridge_list, list)  in of_drm_find_and_get_bridge()
1501 			if (bridge->of_node == np)  in of_drm_find_and_get_bridge()
1502 				return drm_bridge_get(bridge);  in of_drm_find_and_get_bridge()
1537 	struct drm_bridge *bridge = of_drm_find_and_get_bridge(np);  in of_drm_find_bridge()  local
1545 	drm_bridge_put(bridge);  in of_drm_find_bridge()
1547 	return bridge;  in of_drm_find_bridge()
1563 void devm_drm_put_bridge(struct device *dev, struct drm_bridge *bridge)  in devm_drm_put_bridge()  argument
1565 	devm_release_action(dev, drm_bridge_put_void, bridge);  in devm_drm_put_bridge()
1570 					   struct drm_bridge *bridge,  in drm_bridge_debugfs_show_bridge()  argument
1574 	drm_printf(p, "bridge[%u]: %ps\n", idx, bridge->funcs);  in drm_bridge_debugfs_show_bridge()
1576 	drm_printf(p, "\trefcount: %u%s\n", kref_read(&bridge->refcount),  in drm_bridge_debugfs_show_bridge()
1580 		   bridge->type,  in drm_bridge_debugfs_show_bridge()
1581 		   drm_get_connector_type_name(bridge->type));  in drm_bridge_debugfs_show_bridge()
1584 	if (bridge->of_node && !lingering)  in drm_bridge_debugfs_show_bridge()
1585 		drm_printf(p, "\tOF: %pOFfc\n", bridge->of_node);  in drm_bridge_debugfs_show_bridge()
1587 	drm_printf(p, "\tops: [0x%x]", bridge->ops);  in drm_bridge_debugfs_show_bridge()
1588 	if (bridge->ops & DRM_BRIDGE_OP_DETECT)  in drm_bridge_debugfs_show_bridge()
1590 	if (bridge->ops & DRM_BRIDGE_OP_EDID)  in drm_bridge_debugfs_show_bridge()
1592 	if (bridge->ops & DRM_BRIDGE_OP_HPD)  in drm_bridge_debugfs_show_bridge()
1594 	if (bridge->ops & DRM_BRIDGE_OP_MODES)  in drm_bridge_debugfs_show_bridge()
1596 	if (bridge->ops & DRM_BRIDGE_OP_HDMI)  in drm_bridge_debugfs_show_bridge()
1604 	struct drm_bridge *bridge;  in allbridges_show()  local
1609 	list_for_each_entry(bridge, &bridge_list, list)  in allbridges_show()
1610 		drm_bridge_debugfs_show_bridge(&p, bridge, idx++, false);  in allbridges_show()
1612 	list_for_each_entry(bridge, &bridge_lingering_list, list)  in allbridges_show()
1613 		drm_bridge_debugfs_show_bridge(&p, bridge, idx++, true);  in allbridges_show()
1627 	drm_for_each_bridge_in_chain_scoped(encoder, bridge)  in encoder_bridges_show()
1628 		drm_bridge_debugfs_show_bridge(&p, bridge, idx++, false);  in encoder_bridges_show()