81 				    struct drm_dp_mst_branch *mstb);
85 				   struct drm_dp_mst_branch *mstb);
88 					   struct drm_dp_mst_branch *mstb,
1303 static int drm_dp_mst_wait_tx_reply(struct drm_dp_mst_branch *mstb,  in drm_dp_mst_wait_tx_reply()  argument
1306 	struct drm_dp_mst_topology_mgr *mgr = mstb->mgr;  in drm_dp_mst_wait_tx_reply()
1371 	struct drm_dp_mst_branch *mstb;  in drm_dp_add_mst_branch_device()  local
1373 	mstb = kzalloc(sizeof(*mstb), GFP_KERNEL);  in drm_dp_add_mst_branch_device()
1374 	if (!mstb)  in drm_dp_add_mst_branch_device()
1377 	mstb->lct = lct;  in drm_dp_add_mst_branch_device()
1379 		memcpy(mstb->rad, rad, lct / 2);  in drm_dp_add_mst_branch_device()
1380 	INIT_LIST_HEAD(&mstb->ports);  in drm_dp_add_mst_branch_device()
1381 	kref_init(&mstb->topology_kref);  in drm_dp_add_mst_branch_device()
1382 	kref_init(&mstb->malloc_kref);  in drm_dp_add_mst_branch_device()
1383 	return mstb;  in drm_dp_add_mst_branch_device()
1388 	struct drm_dp_mst_branch *mstb =  in drm_dp_free_mst_branch_device()  local
1391 	if (mstb->port_parent)  in drm_dp_free_mst_branch_device()
1392 		drm_dp_mst_put_port_malloc(mstb->port_parent);  in drm_dp_free_mst_branch_device()
1394 	kfree(mstb);  in drm_dp_free_mst_branch_device()
1497 drm_dp_mst_get_mstb_malloc(struct drm_dp_mst_branch *mstb)  in drm_dp_mst_get_mstb_malloc()  argument
1499 	kref_get(&mstb->malloc_kref);  in drm_dp_mst_get_mstb_malloc()
1500 	drm_dbg(mstb->mgr->dev, "mstb %p (%d)\n", mstb, kref_read(&mstb->malloc_kref));  in drm_dp_mst_get_mstb_malloc()
1515 drm_dp_mst_put_mstb_malloc(struct drm_dp_mst_branch *mstb)  in drm_dp_mst_put_mstb_malloc()  argument
1517 	drm_dbg(mstb->mgr->dev, "mstb %p (%d)\n", mstb, kref_read(&mstb->malloc_kref) - 1);  in drm_dp_mst_put_mstb_malloc()
1518 	kref_put(&mstb->malloc_kref, drm_dp_free_mst_branch_device);  in drm_dp_mst_put_mstb_malloc()
1692 drm_dp_mst_dump_mstb_topology_history(struct drm_dp_mst_branch *mstb)  in drm_dp_mst_dump_mstb_topology_history()  argument
1694 	__dump_topology_ref_history(&mstb->topology_ref_history, mstb,  in drm_dp_mst_dump_mstb_topology_history()
1706 save_mstb_topology_ref(struct drm_dp_mst_branch *mstb,  in save_mstb_topology_ref()  argument
1709 	__topology_ref_save(mstb->mgr, &mstb->topology_ref_history, type);  in save_mstb_topology_ref()
1736 drm_dp_mst_dump_mstb_topology_history(struct drm_dp_mst_branch *mstb) {}  in drm_dp_mst_dump_mstb_topology_history()  argument
1739 #define save_mstb_topology_ref(mstb, type)  argument
1745 	struct drm_dp_mst_branch *mstb =  in drm_dp_destroy_mst_branch_device()  local
1747 	struct drm_dp_mst_topology_mgr *mgr = mstb->mgr;  in drm_dp_destroy_mst_branch_device()
1749 	drm_dp_mst_dump_mstb_topology_history(mstb);  in drm_dp_destroy_mst_branch_device()
1751 	INIT_LIST_HEAD(&mstb->destroy_next);  in drm_dp_destroy_mst_branch_device()
1758 	list_add(&mstb->destroy_next, &mgr->destroy_branch_device_list);  in drm_dp_destroy_mst_branch_device()
1786 drm_dp_mst_topology_try_get_mstb(struct drm_dp_mst_branch *mstb)  in drm_dp_mst_topology_try_get_mstb()  argument
1790 	topology_ref_history_lock(mstb->mgr);  in drm_dp_mst_topology_try_get_mstb()
1791 	ret = kref_get_unless_zero(&mstb->topology_kref);  in drm_dp_mst_topology_try_get_mstb()
1793 		drm_dbg(mstb->mgr->dev, "mstb %p (%d)\n", mstb, kref_read(&mstb->topology_kref));  in drm_dp_mst_topology_try_get_mstb()
1794 		save_mstb_topology_ref(mstb, DRM_DP_MST_TOPOLOGY_REF_GET);  in drm_dp_mst_topology_try_get_mstb()
1797 	topology_ref_history_unlock(mstb->mgr);  in drm_dp_mst_topology_try_get_mstb()
1816 static void drm_dp_mst_topology_get_mstb(struct drm_dp_mst_branch *mstb)  in drm_dp_mst_topology_get_mstb()  argument
1818 	topology_ref_history_lock(mstb->mgr);  in drm_dp_mst_topology_get_mstb()
1820 	save_mstb_topology_ref(mstb, DRM_DP_MST_TOPOLOGY_REF_GET);  in drm_dp_mst_topology_get_mstb()
1821 	WARN_ON(kref_read(&mstb->topology_kref) == 0);  in drm_dp_mst_topology_get_mstb()
1822 	kref_get(&mstb->topology_kref);  in drm_dp_mst_topology_get_mstb()
1823 	drm_dbg(mstb->mgr->dev, "mstb %p (%d)\n", mstb, kref_read(&mstb->topology_kref));  in drm_dp_mst_topology_get_mstb()
1825 	topology_ref_history_unlock(mstb->mgr);  in drm_dp_mst_topology_get_mstb()
1841 drm_dp_mst_topology_put_mstb(struct drm_dp_mst_branch *mstb)  in drm_dp_mst_topology_put_mstb()  argument
1843 	topology_ref_history_lock(mstb->mgr);  in drm_dp_mst_topology_put_mstb()
1845 	drm_dbg(mstb->mgr->dev, "mstb %p (%d)\n", mstb, kref_read(&mstb->topology_kref) - 1);  in drm_dp_mst_topology_put_mstb()
1846 	save_mstb_topology_ref(mstb, DRM_DP_MST_TOPOLOGY_REF_PUT);  in drm_dp_mst_topology_put_mstb()
1848 	topology_ref_history_unlock(mstb->mgr);  in drm_dp_mst_topology_put_mstb()
1849 	kref_put(&mstb->topology_kref, drm_dp_destroy_mst_branch_device);  in drm_dp_mst_topology_put_mstb()
1964 drm_dp_mst_topology_get_mstb_validated_locked(struct drm_dp_mst_branch *mstb,  in drm_dp_mst_topology_get_mstb_validated_locked()  argument
1970 	if (to_find == mstb)  in drm_dp_mst_topology_get_mstb_validated_locked()
1971 		return mstb;  in drm_dp_mst_topology_get_mstb_validated_locked()
1973 	list_for_each_entry(port, &mstb->ports, next) {  in drm_dp_mst_topology_get_mstb_validated_locked()
1974 		if (port->mstb) {  in drm_dp_mst_topology_get_mstb_validated_locked()
1976 			    port->mstb, to_find);  in drm_dp_mst_topology_get_mstb_validated_locked()
1986 				       struct drm_dp_mst_branch *mstb)  in drm_dp_mst_topology_get_mstb_validated()  argument
1993 		    mgr->mst_primary, mstb);  in drm_dp_mst_topology_get_mstb_validated()
2003 drm_dp_mst_topology_get_port_validated_locked(struct drm_dp_mst_branch *mstb,  in drm_dp_mst_topology_get_port_validated_locked()  argument
2008 	list_for_each_entry(port, &mstb->ports, next) {  in drm_dp_mst_topology_get_port_validated_locked()
2012 		if (port->mstb) {  in drm_dp_mst_topology_get_port_validated_locked()
2014 			    port->mstb, to_find);  in drm_dp_mst_topology_get_port_validated_locked()
2040 static struct drm_dp_mst_port *drm_dp_get_port(struct drm_dp_mst_branch *mstb, u8 port_num)  in drm_dp_get_port()  argument
2045 	list_for_each_entry(port, &mstb->ports, next) {  in drm_dp_get_port()
2098 	struct drm_dp_mst_branch *mstb;  in drm_dp_port_set_pdt()  local
2123 			drm_dp_mst_topology_put_mstb(port->mstb);  in drm_dp_port_set_pdt()
2124 			port->mstb = NULL;  in drm_dp_port_set_pdt()
2138 			mstb = drm_dp_add_mst_branch_device(lct, rad);  in drm_dp_port_set_pdt()
2139 			if (!mstb) {  in drm_dp_port_set_pdt()
2146 			port->mstb = mstb;  in drm_dp_port_set_pdt()
2147 			mstb->mgr = port->mgr;  in drm_dp_port_set_pdt()
2148 			mstb->port_parent = port;  in drm_dp_port_set_pdt()
2214 static int drm_dp_check_mstb_guid(struct drm_dp_mst_branch *mstb, u8 *guid)  in drm_dp_check_mstb_guid()  argument
2218 	memcpy(mstb->guid, guid, 16);  in drm_dp_check_mstb_guid()
2220 	if (!drm_dp_validate_guid(mstb->mgr, mstb->guid)) {  in drm_dp_check_mstb_guid()
2221 		if (mstb->port_parent) {  in drm_dp_check_mstb_guid()
2222 			ret = drm_dp_send_dpcd_write(mstb->mgr,  in drm_dp_check_mstb_guid()
2223 						     mstb->port_parent,  in drm_dp_check_mstb_guid()
2224 						     DP_GUID, 16, mstb->guid);  in drm_dp_check_mstb_guid()
2226 			ret = drm_dp_dpcd_write(mstb->mgr->aux,  in drm_dp_check_mstb_guid()
2227 						DP_GUID, mstb->guid, 16);  in drm_dp_check_mstb_guid()
2237 static void build_mst_prop_path(const struct drm_dp_mst_branch *mstb,  in build_mst_prop_path()  argument
2245 	snprintf(proppath, proppath_size, "mst:%d", mstb->mgr->conn_base_id);  in build_mst_prop_path()
2246 	for (i = 0; i < (mstb->lct - 1); i++) {  in build_mst_prop_path()
2248 		int port_num = (mstb->rad[i / 2] >> shift) & 0xf;  in build_mst_prop_path()
2298 drm_dp_mst_port_add_connector(struct drm_dp_mst_branch *mstb,  in drm_dp_mst_port_add_connector()  argument
2305 	build_mst_prop_path(mstb, port->port_num, proppath, sizeof(proppath));  in drm_dp_mst_port_add_connector()
2343 		    struct drm_dp_mst_branch *mstb, u8 port_number)  in drm_dp_mst_add_port()  argument
2352 	port->parent = mstb;  in drm_dp_mst_add_port()
2367 	drm_dp_mst_get_mstb_malloc(mstb);  in drm_dp_mst_add_port()
2373 drm_dp_mst_handle_link_address_port(struct drm_dp_mst_branch *mstb,  in drm_dp_mst_handle_link_address_port()  argument
2377 	struct drm_dp_mst_topology_mgr *mgr = mstb->mgr;  in drm_dp_mst_handle_link_address_port()
2384 	port = drm_dp_get_port(mstb, port_msg->port_number);  in drm_dp_mst_handle_link_address_port()
2386 		port = drm_dp_mst_add_port(dev, mgr, mstb,  in drm_dp_mst_handle_link_address_port()
2398 		port = drm_dp_mst_add_port(dev, mgr, mstb,  in drm_dp_mst_handle_link_address_port()
2438 		list_add(&port->next, &mstb->ports);  in drm_dp_mst_handle_link_address_port()
2439 		mstb->num_ports++;  in drm_dp_mst_handle_link_address_port()
2449 			ret = drm_dp_send_enum_path_resources(mgr, mstb,  in drm_dp_mst_handle_link_address_port()
2478 		drm_dp_mst_port_add_connector(mstb, port);  in drm_dp_mst_handle_link_address_port()
2480 	if (send_link_addr && port->mstb) {  in drm_dp_mst_handle_link_address_port()
2481 		ret = drm_dp_send_link_address(mgr, port->mstb);  in drm_dp_mst_handle_link_address_port()
2502 drm_dp_mst_handle_conn_stat(struct drm_dp_mst_branch *mstb,  in drm_dp_mst_handle_conn_stat()  argument
2505 	struct drm_dp_mst_topology_mgr *mgr = mstb->mgr;  in drm_dp_mst_handle_conn_stat()
2512 	port = drm_dp_get_port(mstb, conn_stat->port_number);  in drm_dp_mst_handle_conn_stat()
2524 			mstb->link_address_sent = false;  in drm_dp_mst_handle_conn_stat()
2534 		mstb->link_address_sent = false;  in drm_dp_mst_handle_conn_stat()
2545 			drm_dp_send_enum_path_resources(mgr, mstb, port);  in drm_dp_mst_handle_conn_stat()
2563 		drm_dp_mst_port_add_connector(mstb, port);  in drm_dp_mst_handle_conn_stat()
2568 		queue_work(system_long_wq, &mstb->mgr->work);  in drm_dp_mst_handle_conn_stat()
2574 	struct drm_dp_mst_branch *mstb;  in drm_dp_get_mst_branch_device()  local
2580 	mstb = mgr->mst_primary;  in drm_dp_get_mst_branch_device()
2582 	if (!mstb)  in drm_dp_get_mst_branch_device()
2589 		list_for_each_entry(port, &mstb->ports, next) {  in drm_dp_get_mst_branch_device()
2591 				mstb = port->mstb;  in drm_dp_get_mst_branch_device()
2592 				if (!mstb) {  in drm_dp_get_mst_branch_device()
2603 	ret = drm_dp_mst_topology_try_get_mstb(mstb);  in drm_dp_get_mst_branch_device()
2605 		mstb = NULL;  in drm_dp_get_mst_branch_device()
2608 	return mstb;  in drm_dp_get_mst_branch_device()
2612 	struct drm_dp_mst_branch *mstb,  in get_mst_branch_device_by_guid_helper()  argument
2618 	if (memcmp(mstb->guid, guid, 16) == 0)  in get_mst_branch_device_by_guid_helper()
2619 		return mstb;  in get_mst_branch_device_by_guid_helper()
2622 	list_for_each_entry(port, &mstb->ports, next) {  in get_mst_branch_device_by_guid_helper()
2623 		if (!port->mstb)  in get_mst_branch_device_by_guid_helper()
2626 		found_mstb = get_mst_branch_device_by_guid_helper(port->mstb, guid);  in get_mst_branch_device_by_guid_helper()
2639 	struct drm_dp_mst_branch *mstb;  in drm_dp_get_mst_branch_device_by_guid()  local
2645 	mstb = get_mst_branch_device_by_guid_helper(mgr->mst_primary, guid);  in drm_dp_get_mst_branch_device_by_guid()
2646 	if (mstb) {  in drm_dp_get_mst_branch_device_by_guid()
2647 		ret = drm_dp_mst_topology_try_get_mstb(mstb);  in drm_dp_get_mst_branch_device_by_guid()
2649 			mstb = NULL;  in drm_dp_get_mst_branch_device_by_guid()
2653 	return mstb;  in drm_dp_get_mst_branch_device_by_guid()
2657 					       struct drm_dp_mst_branch *mstb)  in drm_dp_check_and_send_link_address()  argument
2663 	if (!mstb->link_address_sent) {  in drm_dp_check_and_send_link_address()
2664 		ret = drm_dp_send_link_address(mgr, mstb);  in drm_dp_check_and_send_link_address()
2671 	list_for_each_entry(port, &mstb->ports, next) {  in drm_dp_check_and_send_link_address()
2677 		if (port->mstb)  in drm_dp_check_and_send_link_address()
2679 			    mgr, port->mstb);  in drm_dp_check_and_send_link_address()
2700 	struct drm_dp_mst_branch *mstb;  in drm_dp_mst_link_probe_work()  local
2710 	mstb = mgr->mst_primary;  in drm_dp_mst_link_probe_work()
2711 	if (mstb) {  in drm_dp_mst_link_probe_work()
2712 		ret = drm_dp_mst_topology_try_get_mstb(mstb);  in drm_dp_mst_link_probe_work()
2714 			mstb = NULL;  in drm_dp_mst_link_probe_work()
2717 	if (!mstb) {  in drm_dp_mst_link_probe_work()
2732 		drm_dp_send_clear_payload_id_table(mgr, mstb);  in drm_dp_mst_link_probe_work()
2735 	ret = drm_dp_check_and_send_link_address(mgr, mstb);  in drm_dp_mst_link_probe_work()
2736 	drm_dp_mst_topology_put_mstb(mstb);  in drm_dp_mst_link_probe_work()
2806 	struct drm_dp_mst_branch *mstb = txmsg->dst;  in set_hdr_from_dst_qlock()  local
2821 		hdr->lct = mstb->lct;  in set_hdr_from_dst_qlock()
2822 		hdr->lcr = mstb->lct - 1;  in set_hdr_from_dst_qlock()
2825 	memcpy(hdr->rad, mstb->rad, hdr->lct / 2);  in set_hdr_from_dst_qlock()
2957 				     struct drm_dp_mst_branch *mstb)  in drm_dp_send_link_address()  argument
2969 	txmsg->dst = mstb;  in drm_dp_send_link_address()
2972 	mstb->link_address_sent = true;  in drm_dp_send_link_address()
2976 	ret = drm_dp_mst_wait_tx_reply(mstb, txmsg);  in drm_dp_send_link_address()
2991 	ret = drm_dp_check_mstb_guid(mstb, reply->guid);  in drm_dp_send_link_address()
2995 		drm_dp_mst_rad_to_str(mstb->rad, mstb->lct, buf, sizeof(buf));  in drm_dp_send_link_address()
3002 		ret = drm_dp_mst_handle_link_address_port(mstb, mgr->dev,  in drm_dp_send_link_address()
3016 	list_for_each_entry_safe(port, tmp, &mstb->ports, next) {  in drm_dp_send_link_address()
3030 		mstb->link_address_sent = false;  in drm_dp_send_link_address()
3037 				   struct drm_dp_mst_branch *mstb)  in drm_dp_send_clear_payload_id_table()  argument
3046 	txmsg->dst = mstb;  in drm_dp_send_clear_payload_id_table()
3051 	ret = drm_dp_mst_wait_tx_reply(mstb, txmsg);  in drm_dp_send_clear_payload_id_table()
3060 				struct drm_dp_mst_branch *mstb,  in drm_dp_send_enum_path_resources()  argument
3071 	txmsg->dst = mstb;  in drm_dp_send_enum_path_resources()
3076 	ret = drm_dp_mst_wait_tx_reply(mstb, txmsg);  in drm_dp_send_enum_path_resources()
3109 …atic struct drm_dp_mst_port *drm_dp_get_last_connected_port_to_mstb(struct drm_dp_mst_branch *mstb)  in drm_dp_get_last_connected_port_to_mstb()  argument
3111 	if (!mstb->port_parent)  in drm_dp_get_last_connected_port_to_mstb()
3114 	if (mstb->port_parent->mstb != mstb)  in drm_dp_get_last_connected_port_to_mstb()
3115 		return mstb->port_parent;  in drm_dp_get_last_connected_port_to_mstb()
3117 	return drm_dp_get_last_connected_port_to_mstb(mstb->port_parent->parent);  in drm_dp_get_last_connected_port_to_mstb()
3130 					struct drm_dp_mst_branch *mstb,  in drm_dp_get_last_connected_port_and_mstb()  argument
3141 		found_port = drm_dp_get_last_connected_port_to_mstb(mstb);  in drm_dp_get_last_connected_port_and_mstb()
3150 			mstb = found_port->parent;  in drm_dp_get_last_connected_port_and_mstb()
3164 	struct drm_dp_mst_branch *mstb;  in drm_dp_payload_send_msg()  local
3170 	mstb = drm_dp_mst_topology_get_mstb_validated(mgr, port->parent);  in drm_dp_payload_send_msg()
3171 	if (!mstb) {  in drm_dp_payload_send_msg()
3172 		mstb = drm_dp_get_last_connected_port_and_mstb(mgr,  in drm_dp_payload_send_msg()
3176 		if (!mstb)  in drm_dp_payload_send_msg()
3189 	txmsg->dst = mstb;  in drm_dp_payload_send_msg()
3204 	ret = drm_dp_mst_wait_tx_reply(mstb, txmsg);  in drm_dp_payload_send_msg()
3213 	drm_dp_mst_topology_put_mstb(mstb);  in drm_dp_payload_send_msg()
3538 	struct drm_dp_mst_branch *mstb;  in drm_dp_send_dpcd_read()  local
3540 	mstb = drm_dp_mst_topology_get_mstb_validated(mgr, port->parent);  in drm_dp_send_dpcd_read()
3541 	if (!mstb)  in drm_dp_send_dpcd_read()
3555 	ret = drm_dp_mst_wait_tx_reply(mstb, txmsg);  in drm_dp_send_dpcd_read()
3562 			mstb, port->port_num, offset, size);  in drm_dp_send_dpcd_read()
3579 	drm_dp_mst_topology_put_mstb(mstb);  in drm_dp_send_dpcd_read()
3590 	struct drm_dp_mst_branch *mstb;  in drm_dp_send_dpcd_write()  local
3592 	mstb = drm_dp_mst_topology_get_mstb_validated(mgr, port->parent);  in drm_dp_send_dpcd_write()
3593 	if (!mstb)  in drm_dp_send_dpcd_write()
3603 	txmsg->dst = mstb;  in drm_dp_send_dpcd_write()
3607 	ret = drm_dp_mst_wait_tx_reply(mstb, txmsg);  in drm_dp_send_dpcd_write()
3617 	drm_dp_mst_topology_put_mstb(mstb);  in drm_dp_send_dpcd_write()
3632 				    struct drm_dp_mst_branch *mstb,  in drm_dp_send_up_ack_reply()  argument
3641 	txmsg->dst = mstb;  in drm_dp_send_up_ack_reply()
3709 	struct drm_dp_mst_branch *mstb = NULL;  in drm_dp_mst_topology_mgr_set_mst()  local
3744 		mstb = drm_dp_add_mst_branch_device(1, NULL);  in drm_dp_mst_topology_mgr_set_mst()
3745 		if (mstb == NULL) {  in drm_dp_mst_topology_mgr_set_mst()
3749 		mstb->mgr = mgr;  in drm_dp_mst_topology_mgr_set_mst()
3752 		mgr->mst_primary = mstb;  in drm_dp_mst_topology_mgr_set_mst()
3771 		mstb = mgr->mst_primary;  in drm_dp_mst_topology_mgr_set_mst()
3789 	if (mstb)  in drm_dp_mst_topology_mgr_set_mst()
3790 		drm_dp_mst_topology_put_mstb(mstb);  in drm_dp_mst_topology_mgr_set_mst()
3797 drm_dp_mst_topology_mgr_invalidate_mstb(struct drm_dp_mst_branch *mstb)  in drm_dp_mst_topology_mgr_invalidate_mstb()  argument
3802 	mstb->link_address_sent = false;  in drm_dp_mst_topology_mgr_invalidate_mstb()
3804 	list_for_each_entry(port, &mstb->ports, next)  in drm_dp_mst_topology_mgr_invalidate_mstb()
3805 		if (port->mstb)  in drm_dp_mst_topology_mgr_invalidate_mstb()
3806 			drm_dp_mst_topology_mgr_invalidate_mstb(port->mstb);  in drm_dp_mst_topology_mgr_invalidate_mstb()
3916 		      struct drm_dp_mst_branch **mstb)  in drm_dp_get_one_sb_msg()  argument
3930 		*mstb = NULL;  in drm_dp_get_one_sb_msg()
3949 		*mstb = drm_dp_get_mst_branch_device(mgr, hdr.lct, hdr.rad);  in drm_dp_get_one_sb_msg()
3950 		if (!*mstb) {  in drm_dp_get_one_sb_msg()
3995 	struct drm_dp_mst_branch *mstb = NULL;  in drm_dp_mst_handle_down_rep()  local
3998 	if (!drm_dp_get_one_sb_msg(mgr, false, &mstb))  in drm_dp_mst_handle_down_rep()
4012 	if (!txmsg || txmsg->dst != mstb) {  in drm_dp_mst_handle_down_rep()
4017 			    mstb, hdr->seqno, hdr->lct, hdr->rad[0], msg->msg[0]);  in drm_dp_mst_handle_down_rep()
4034 	drm_dp_mst_topology_put_mstb(mstb);  in drm_dp_mst_handle_down_rep()
4048 	if (mstb)  in drm_dp_mst_handle_down_rep()
4049 		drm_dp_mst_topology_put_mstb(mstb);  in drm_dp_mst_handle_down_rep()
4058 	struct drm_dp_mst_branch *mstb = NULL;  in drm_dp_mst_process_up_req()  local
4072 			mstb = drm_dp_get_mst_branch_device_by_guid(mgr, guid);  in drm_dp_mst_process_up_req()
4074 		mstb = drm_dp_get_mst_branch_device(mgr, hdr->lct, hdr->rad);  in drm_dp_mst_process_up_req()
4077 	if (!mstb) {  in drm_dp_mst_process_up_req()
4084 		drm_dp_mst_handle_conn_stat(mstb, &msg->u.conn_stat);  in drm_dp_mst_process_up_req()
4088 	drm_dp_mst_topology_put_mstb(mstb);  in drm_dp_mst_process_up_req()
4783 				 struct drm_dp_mst_branch *mstb)  in drm_dp_mst_dump_mstb()  argument
4786 	int tabs = mstb->lct;  in drm_dp_mst_dump_mstb()
4794 	seq_printf(m, "%smstb - [%p]: num_ports: %d\n", prefix, mstb, mstb->num_ports);  in drm_dp_mst_dump_mstb()
4795 	list_for_each_entry(port, &mstb->ports, next) {  in drm_dp_mst_dump_mstb()
4808 		if (port->mstb)  in drm_dp_mst_dump_mstb()
4809 			drm_dp_mst_dump_mstb(m, port->mstb);  in drm_dp_mst_dump_mstb()
4963 drm_dp_delayed_destroy_mstb(struct drm_dp_mst_branch *mstb)  in drm_dp_delayed_destroy_mstb()  argument
4965 	struct drm_dp_mst_topology_mgr *mgr = mstb->mgr;  in drm_dp_delayed_destroy_mstb()
4971 	list_for_each_entry_safe(port, port_tmp, &mstb->ports, next) {  in drm_dp_delayed_destroy_mstb()
4978 	mutex_lock(&mstb->mgr->qlock);  in drm_dp_delayed_destroy_mstb()
4980 		if (txmsg->dst != mstb)  in drm_dp_delayed_destroy_mstb()
4987 	mutex_unlock(&mstb->mgr->qlock);  in drm_dp_delayed_destroy_mstb()
4990 		wake_up_all(&mstb->mgr->tx_waitq);  in drm_dp_delayed_destroy_mstb()
4992 	drm_dp_mst_put_mstb_malloc(mstb);  in drm_dp_delayed_destroy_mstb()
5011 			struct drm_dp_mst_branch *mstb;  in drm_dp_delayed_destroy_work()  local
5014 			mstb = list_first_entry_or_null(&mgr->destroy_branch_device_list,  in drm_dp_delayed_destroy_work()
5017 			if (mstb)  in drm_dp_delayed_destroy_work()
5018 				list_del(&mstb->destroy_next);  in drm_dp_delayed_destroy_work()
5021 			if (!mstb)  in drm_dp_delayed_destroy_work()
5024 			drm_dp_delayed_destroy_mstb(mstb);  in drm_dp_delayed_destroy_work()
5129 drm_dp_mst_atomic_check_mstb_bw_limit(struct drm_dp_mst_branch *mstb,  in drm_dp_mst_atomic_check_mstb_bw_limit()  argument
5142 		    !drm_dp_mst_port_downstream_of_branch(vcpi->port, mstb))  in drm_dp_mst_atomic_check_mstb_bw_limit()
5151 	if (mstb->port_parent)  in drm_dp_mst_atomic_check_mstb_bw_limit()
5152 		drm_dbg_atomic(mstb->mgr->dev,  in drm_dp_mst_atomic_check_mstb_bw_limit()
5154 			       mstb->port_parent->parent, mstb->port_parent, mstb);  in drm_dp_mst_atomic_check_mstb_bw_limit()
5156 		drm_dbg_atomic(mstb->mgr->dev, "[MSTB:%p] Checking bandwidth limits\n", mstb);  in drm_dp_mst_atomic_check_mstb_bw_limit()
5158 	list_for_each_entry(port, &mstb->ports, next) {  in drm_dp_mst_atomic_check_mstb_bw_limit()
5207 		pbn_used = drm_dp_mst_atomic_check_mstb_bw_limit(port->mstb,  in drm_dp_mst_atomic_check_port_bw_limit()
5614 static int drm_dp_mst_i2c_read(struct drm_dp_mst_branch *mstb,  in drm_dp_mst_i2c_read()  argument
5643 	txmsg->dst = mstb;  in drm_dp_mst_i2c_read()
5648 	ret = drm_dp_mst_wait_tx_reply(mstb, txmsg);  in drm_dp_mst_i2c_read()
5667 static int drm_dp_mst_i2c_write(struct drm_dp_mst_branch *mstb,  in drm_dp_mst_i2c_write()  argument
5691 		txmsg->dst = mstb;  in drm_dp_mst_i2c_write()
5696 		ret = drm_dp_mst_wait_tx_reply(mstb, txmsg);  in drm_dp_mst_i2c_write()
5719 	struct drm_dp_mst_branch *mstb;  in drm_dp_mst_i2c_xfer()  local
5723 	mstb = drm_dp_mst_topology_get_mstb_validated(mgr, port->parent);  in drm_dp_mst_i2c_xfer()
5724 	if (!mstb)  in drm_dp_mst_i2c_xfer()
5728 		ret = drm_dp_mst_i2c_read(mstb, port, msgs, num);  in drm_dp_mst_i2c_xfer()
5730 		ret = drm_dp_mst_i2c_write(mstb, port, msgs, num);  in drm_dp_mst_i2c_xfer()
5736 	drm_dp_mst_topology_put_mstb(mstb);  in drm_dp_mst_i2c_xfer()
5825 	    port->mstb &&  in drm_dp_mst_is_virtual_dpcd()
5826 	    port->mstb->num_ports == 2) {  in drm_dp_mst_is_virtual_dpcd()
5827 		list_for_each_entry(downstream_port, &port->mstb->ports, next) {  in drm_dp_mst_is_virtual_dpcd()