78 				    struct drm_dp_mst_branch *mstb);
82 				   struct drm_dp_mst_branch *mstb);
85 					   struct drm_dp_mst_branch *mstb,
1252 static int drm_dp_mst_wait_tx_reply(struct drm_dp_mst_branch *mstb,  in drm_dp_mst_wait_tx_reply()  argument
1255 	struct drm_dp_mst_topology_mgr *mgr = mstb->mgr;  in drm_dp_mst_wait_tx_reply()
1321 	struct drm_dp_mst_branch *mstb;  in drm_dp_add_mst_branch_device()  local
1323 	mstb = kzalloc(sizeof(*mstb), GFP_KERNEL);  in drm_dp_add_mst_branch_device()
1324 	if (!mstb)  in drm_dp_add_mst_branch_device()
1327 	mstb->lct = lct;  in drm_dp_add_mst_branch_device()
1329 		memcpy(mstb->rad, rad, lct / 2);  in drm_dp_add_mst_branch_device()
1330 	INIT_LIST_HEAD(&mstb->ports);  in drm_dp_add_mst_branch_device()
1331 	kref_init(&mstb->topology_kref);  in drm_dp_add_mst_branch_device()
1332 	kref_init(&mstb->malloc_kref);  in drm_dp_add_mst_branch_device()
1333 	return mstb;  in drm_dp_add_mst_branch_device()
1338 	struct drm_dp_mst_branch *mstb =  in drm_dp_free_mst_branch_device()  local
1341 	if (mstb->port_parent)  in drm_dp_free_mst_branch_device()
1342 		drm_dp_mst_put_port_malloc(mstb->port_parent);  in drm_dp_free_mst_branch_device()
1344 	kfree(mstb);  in drm_dp_free_mst_branch_device()
1447 drm_dp_mst_get_mstb_malloc(struct drm_dp_mst_branch *mstb)  in drm_dp_mst_get_mstb_malloc()  argument
1449 	kref_get(&mstb->malloc_kref);  in drm_dp_mst_get_mstb_malloc()
1450 	drm_dbg(mstb->mgr->dev, "mstb %p (%d)\n", mstb, kref_read(&mstb->malloc_kref));  in drm_dp_mst_get_mstb_malloc()
1465 drm_dp_mst_put_mstb_malloc(struct drm_dp_mst_branch *mstb)  in drm_dp_mst_put_mstb_malloc()  argument
1467 	drm_dbg(mstb->mgr->dev, "mstb %p (%d)\n", mstb, kref_read(&mstb->malloc_kref) - 1);  in drm_dp_mst_put_mstb_malloc()
1468 	kref_put(&mstb->malloc_kref, drm_dp_free_mst_branch_device);  in drm_dp_mst_put_mstb_malloc()
1640 drm_dp_mst_dump_mstb_topology_history(struct drm_dp_mst_branch *mstb)  in drm_dp_mst_dump_mstb_topology_history()  argument
1642 	__dump_topology_ref_history(mstb->mgr->dev, &mstb->topology_ref_history,  in drm_dp_mst_dump_mstb_topology_history()
1643 				    mstb, "MSTB");  in drm_dp_mst_dump_mstb_topology_history()
1654 save_mstb_topology_ref(struct drm_dp_mst_branch *mstb,  in save_mstb_topology_ref()  argument
1657 	__topology_ref_save(mstb->mgr, &mstb->topology_ref_history, type);  in save_mstb_topology_ref()
1684 drm_dp_mst_dump_mstb_topology_history(struct drm_dp_mst_branch *mstb) {}  in drm_dp_mst_dump_mstb_topology_history()  argument
1687 #define save_mstb_topology_ref(mstb, type)  argument
1707 	struct drm_dp_mst_branch *mstb =  in drm_dp_destroy_mst_branch_device()  local
1709 	struct drm_dp_mst_topology_mgr *mgr = mstb->mgr;  in drm_dp_destroy_mst_branch_device()
1711 	drm_dp_mst_dump_mstb_topology_history(mstb);  in drm_dp_destroy_mst_branch_device()
1713 	INIT_LIST_HEAD(&mstb->destroy_next);  in drm_dp_destroy_mst_branch_device()
1720 	list_add(&mstb->destroy_next, &mgr->destroy_branch_device_list);  in drm_dp_destroy_mst_branch_device()
1748 drm_dp_mst_topology_try_get_mstb(struct drm_dp_mst_branch *mstb)  in drm_dp_mst_topology_try_get_mstb()  argument
1752 	topology_ref_history_lock(mstb->mgr);  in drm_dp_mst_topology_try_get_mstb()
1753 	ret = kref_get_unless_zero(&mstb->topology_kref);  in drm_dp_mst_topology_try_get_mstb()
1755 		drm_dbg(mstb->mgr->dev, "mstb %p (%d)\n", mstb, kref_read(&mstb->topology_kref));  in drm_dp_mst_topology_try_get_mstb()
1756 		save_mstb_topology_ref(mstb, DRM_DP_MST_TOPOLOGY_REF_GET);  in drm_dp_mst_topology_try_get_mstb()
1759 	topology_ref_history_unlock(mstb->mgr);  in drm_dp_mst_topology_try_get_mstb()
1778 static void drm_dp_mst_topology_get_mstb(struct drm_dp_mst_branch *mstb)  in drm_dp_mst_topology_get_mstb()  argument
1780 	topology_ref_history_lock(mstb->mgr);  in drm_dp_mst_topology_get_mstb()
1782 	save_mstb_topology_ref(mstb, DRM_DP_MST_TOPOLOGY_REF_GET);  in drm_dp_mst_topology_get_mstb()
1783 	WARN_ON(kref_read(&mstb->topology_kref) == 0);  in drm_dp_mst_topology_get_mstb()
1784 	kref_get(&mstb->topology_kref);  in drm_dp_mst_topology_get_mstb()
1785 	drm_dbg(mstb->mgr->dev, "mstb %p (%d)\n", mstb, kref_read(&mstb->topology_kref));  in drm_dp_mst_topology_get_mstb()
1787 	topology_ref_history_unlock(mstb->mgr);  in drm_dp_mst_topology_get_mstb()
1803 drm_dp_mst_topology_put_mstb(struct drm_dp_mst_branch *mstb)  in drm_dp_mst_topology_put_mstb()  argument
1805 	topology_ref_history_lock(mstb->mgr);  in drm_dp_mst_topology_put_mstb()
1807 	drm_dbg(mstb->mgr->dev, "mstb %p (%d)\n", mstb, kref_read(&mstb->topology_kref) - 1);  in drm_dp_mst_topology_put_mstb()
1808 	save_mstb_topology_ref(mstb, DRM_DP_MST_TOPOLOGY_REF_PUT);  in drm_dp_mst_topology_put_mstb()
1810 	topology_ref_history_unlock(mstb->mgr);  in drm_dp_mst_topology_put_mstb()
1811 	kref_put(&mstb->topology_kref, drm_dp_destroy_mst_branch_device);  in drm_dp_mst_topology_put_mstb()
1926 drm_dp_mst_topology_get_mstb_validated_locked(struct drm_dp_mst_branch *mstb,  in drm_dp_mst_topology_get_mstb_validated_locked()  argument
1932 	if (to_find == mstb)  in drm_dp_mst_topology_get_mstb_validated_locked()
1933 		return mstb;  in drm_dp_mst_topology_get_mstb_validated_locked()
1935 	list_for_each_entry(port, &mstb->ports, next) {  in drm_dp_mst_topology_get_mstb_validated_locked()
1936 		if (port->mstb) {  in drm_dp_mst_topology_get_mstb_validated_locked()
1938 			    port->mstb, to_find);  in drm_dp_mst_topology_get_mstb_validated_locked()
1948 				       struct drm_dp_mst_branch *mstb)  in drm_dp_mst_topology_get_mstb_validated()  argument
1955 		    mgr->mst_primary, mstb);  in drm_dp_mst_topology_get_mstb_validated()
1965 drm_dp_mst_topology_get_port_validated_locked(struct drm_dp_mst_branch *mstb,  in drm_dp_mst_topology_get_port_validated_locked()  argument
1970 	list_for_each_entry(port, &mstb->ports, next) {  in drm_dp_mst_topology_get_port_validated_locked()
1974 		if (port->mstb) {  in drm_dp_mst_topology_get_port_validated_locked()
1976 			    port->mstb, to_find);  in drm_dp_mst_topology_get_port_validated_locked()
2002 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
2007 	list_for_each_entry(port, &mstb->ports, next) {  in drm_dp_get_port()
2060 	struct drm_dp_mst_branch *mstb;  in drm_dp_port_set_pdt()  local
2085 			drm_dp_mst_topology_put_mstb(port->mstb);  in drm_dp_port_set_pdt()
2086 			port->mstb = NULL;  in drm_dp_port_set_pdt()
2100 			mstb = drm_dp_add_mst_branch_device(lct, rad);  in drm_dp_port_set_pdt()
2101 			if (!mstb) {  in drm_dp_port_set_pdt()
2108 			port->mstb = mstb;  in drm_dp_port_set_pdt()
2109 			mstb->mgr = port->mgr;  in drm_dp_port_set_pdt()
2110 			mstb->port_parent = port;  in drm_dp_port_set_pdt()
2176 static int drm_dp_check_mstb_guid(struct drm_dp_mst_branch *mstb, guid_t *guid)  in drm_dp_check_mstb_guid()  argument
2180 	guid_copy(&mstb->guid, guid);  in drm_dp_check_mstb_guid()
2182 	if (!drm_dp_validate_guid(mstb->mgr, &mstb->guid)) {  in drm_dp_check_mstb_guid()
2185 		export_guid(buf, &mstb->guid);  in drm_dp_check_mstb_guid()
2187 		if (mstb->port_parent) {  in drm_dp_check_mstb_guid()
2188 			ret = drm_dp_send_dpcd_write(mstb->mgr,  in drm_dp_check_mstb_guid()
2189 						     mstb->port_parent,  in drm_dp_check_mstb_guid()
2192 			ret = drm_dp_dpcd_write(mstb->mgr->aux,  in drm_dp_check_mstb_guid()
2203 static void build_mst_prop_path(const struct drm_dp_mst_branch *mstb,  in build_mst_prop_path()  argument
2211 	snprintf(proppath, proppath_size, "mst:%d", mstb->mgr->conn_base_id);  in build_mst_prop_path()
2212 	for (i = 0; i < (mstb->lct - 1); i++) {  in build_mst_prop_path()
2214 		int port_num = (mstb->rad[i / 2] >> shift) & 0xf;  in build_mst_prop_path()
2264 drm_dp_mst_port_add_connector(struct drm_dp_mst_branch *mstb,  in drm_dp_mst_port_add_connector()  argument
2271 	build_mst_prop_path(mstb, port->port_num, proppath, sizeof(proppath));  in drm_dp_mst_port_add_connector()
2309 		    struct drm_dp_mst_branch *mstb, u8 port_number)  in drm_dp_mst_add_port()  argument
2318 	port->parent = mstb;  in drm_dp_mst_add_port()
2333 	drm_dp_mst_get_mstb_malloc(mstb);  in drm_dp_mst_add_port()
2339 drm_dp_mst_handle_link_address_port(struct drm_dp_mst_branch *mstb,  in drm_dp_mst_handle_link_address_port()  argument
2343 	struct drm_dp_mst_topology_mgr *mgr = mstb->mgr;  in drm_dp_mst_handle_link_address_port()
2350 	port = drm_dp_get_port(mstb, port_msg->port_number);  in drm_dp_mst_handle_link_address_port()
2352 		port = drm_dp_mst_add_port(dev, mgr, mstb,  in drm_dp_mst_handle_link_address_port()
2364 		port = drm_dp_mst_add_port(dev, mgr, mstb,  in drm_dp_mst_handle_link_address_port()
2403 		list_add(&port->next, &mstb->ports);  in drm_dp_mst_handle_link_address_port()
2404 		mstb->num_ports++;  in drm_dp_mst_handle_link_address_port()
2413 		ret = drm_dp_send_enum_path_resources(mgr, mstb,  in drm_dp_mst_handle_link_address_port()
2441 		drm_dp_mst_port_add_connector(mstb, port);  in drm_dp_mst_handle_link_address_port()
2443 	if (send_link_addr && port->mstb) {  in drm_dp_mst_handle_link_address_port()
2444 		ret = drm_dp_send_link_address(mgr, port->mstb);  in drm_dp_mst_handle_link_address_port()
2465 drm_dp_mst_handle_conn_stat(struct drm_dp_mst_branch *mstb,  in drm_dp_mst_handle_conn_stat()  argument
2468 	struct drm_dp_mst_topology_mgr *mgr = mstb->mgr;  in drm_dp_mst_handle_conn_stat()
2475 	port = drm_dp_get_port(mstb, conn_stat->port_number);  in drm_dp_mst_handle_conn_stat()
2487 			mstb->link_address_sent = false;  in drm_dp_mst_handle_conn_stat()
2497 		mstb->link_address_sent = false;  in drm_dp_mst_handle_conn_stat()
2508 			drm_dp_send_enum_path_resources(mgr, mstb, port);  in drm_dp_mst_handle_conn_stat()
2526 		drm_dp_mst_port_add_connector(mstb, port);  in drm_dp_mst_handle_conn_stat()
2536 	struct drm_dp_mst_branch *mstb;  in drm_dp_get_mst_branch_device()  local
2542 	mstb = mgr->mst_primary;  in drm_dp_get_mst_branch_device()
2544 	if (!mstb)  in drm_dp_get_mst_branch_device()
2551 		list_for_each_entry(port, &mstb->ports, next) {  in drm_dp_get_mst_branch_device()
2553 				mstb = port->mstb;  in drm_dp_get_mst_branch_device()
2554 				if (!mstb) {  in drm_dp_get_mst_branch_device()
2565 	ret = drm_dp_mst_topology_try_get_mstb(mstb);  in drm_dp_get_mst_branch_device()
2567 		mstb = NULL;  in drm_dp_get_mst_branch_device()
2570 	return mstb;  in drm_dp_get_mst_branch_device()
2574 get_mst_branch_device_by_guid_helper(struct drm_dp_mst_branch *mstb,  in get_mst_branch_device_by_guid_helper()  argument
2580 	if (!mstb)  in get_mst_branch_device_by_guid_helper()
2583 	if (guid_equal(&mstb->guid, guid))  in get_mst_branch_device_by_guid_helper()
2584 		return mstb;  in get_mst_branch_device_by_guid_helper()
2586 	list_for_each_entry(port, &mstb->ports, next) {  in get_mst_branch_device_by_guid_helper()
2587 		found_mstb = get_mst_branch_device_by_guid_helper(port->mstb, guid);  in get_mst_branch_device_by_guid_helper()
2600 	struct drm_dp_mst_branch *mstb;  in drm_dp_get_mst_branch_device_by_guid()  local
2606 	mstb = get_mst_branch_device_by_guid_helper(mgr->mst_primary, guid);  in drm_dp_get_mst_branch_device_by_guid()
2607 	if (mstb) {  in drm_dp_get_mst_branch_device_by_guid()
2608 		ret = drm_dp_mst_topology_try_get_mstb(mstb);  in drm_dp_get_mst_branch_device_by_guid()
2610 			mstb = NULL;  in drm_dp_get_mst_branch_device_by_guid()
2614 	return mstb;  in drm_dp_get_mst_branch_device_by_guid()
2618 					       struct drm_dp_mst_branch *mstb)  in drm_dp_check_and_send_link_address()  argument
2624 	if (!mstb->link_address_sent) {  in drm_dp_check_and_send_link_address()
2625 		ret = drm_dp_send_link_address(mgr, mstb);  in drm_dp_check_and_send_link_address()
2632 	list_for_each_entry(port, &mstb->ports, next) {  in drm_dp_check_and_send_link_address()
2633 		if (port->input || !port->ddps || !port->mstb)  in drm_dp_check_and_send_link_address()
2636 		ret = drm_dp_check_and_send_link_address(mgr, port->mstb);  in drm_dp_check_and_send_link_address()
2651 	struct drm_dp_mst_branch *mstb;  in drm_dp_mst_link_probe_work()  local
2661 	mstb = mgr->mst_primary;  in drm_dp_mst_link_probe_work()
2662 	if (mstb) {  in drm_dp_mst_link_probe_work()
2663 		ret = drm_dp_mst_topology_try_get_mstb(mstb);  in drm_dp_mst_link_probe_work()
2665 			mstb = NULL;  in drm_dp_mst_link_probe_work()
2668 	if (!mstb) {  in drm_dp_mst_link_probe_work()
2683 		drm_dp_send_clear_payload_id_table(mgr, mstb);  in drm_dp_mst_link_probe_work()
2686 	ret = drm_dp_check_and_send_link_address(mgr, mstb);  in drm_dp_mst_link_probe_work()
2687 	drm_dp_mst_topology_put_mstb(mstb);  in drm_dp_mst_link_probe_work()
2757 	struct drm_dp_mst_branch *mstb = txmsg->dst;  in set_hdr_from_dst_qlock()  local
2772 		hdr->lct = mstb->lct;  in set_hdr_from_dst_qlock()
2773 		hdr->lcr = mstb->lct - 1;  in set_hdr_from_dst_qlock()
2776 	memcpy(hdr->rad, mstb->rad, hdr->lct / 2);  in set_hdr_from_dst_qlock()
2911 				     struct drm_dp_mst_branch *mstb)  in drm_dp_send_link_address()  argument
2923 	txmsg->dst = mstb;  in drm_dp_send_link_address()
2926 	mstb->link_address_sent = true;  in drm_dp_send_link_address()
2930 	ret = drm_dp_mst_wait_tx_reply(mstb, txmsg);  in drm_dp_send_link_address()
2945 	ret = drm_dp_check_mstb_guid(mstb, &reply->guid);  in drm_dp_send_link_address()
2949 		drm_dp_mst_rad_to_str(mstb->rad, mstb->lct, buf, sizeof(buf));  in drm_dp_send_link_address()
2956 		ret = drm_dp_mst_handle_link_address_port(mstb, mgr->dev,  in drm_dp_send_link_address()
2970 	list_for_each_entry_safe(port, tmp, &mstb->ports, next) {  in drm_dp_send_link_address()
2984 		mstb->link_address_sent = false;  in drm_dp_send_link_address()
2991 				   struct drm_dp_mst_branch *mstb)  in drm_dp_send_clear_payload_id_table()  argument
3000 	txmsg->dst = mstb;  in drm_dp_send_clear_payload_id_table()
3005 	ret = drm_dp_mst_wait_tx_reply(mstb, txmsg);  in drm_dp_send_clear_payload_id_table()
3014 				struct drm_dp_mst_branch *mstb,  in drm_dp_send_enum_path_resources()  argument
3025 	txmsg->dst = mstb;  in drm_dp_send_enum_path_resources()
3030 	ret = drm_dp_mst_wait_tx_reply(mstb, txmsg);  in drm_dp_send_enum_path_resources()
3063 …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
3065 	if (!mstb->port_parent)  in drm_dp_get_last_connected_port_to_mstb()
3068 	if (mstb->port_parent->mstb != mstb)  in drm_dp_get_last_connected_port_to_mstb()
3069 		return mstb->port_parent;  in drm_dp_get_last_connected_port_to_mstb()
3071 	return drm_dp_get_last_connected_port_to_mstb(mstb->port_parent->parent);  in drm_dp_get_last_connected_port_to_mstb()
3084 					struct drm_dp_mst_branch *mstb,  in drm_dp_get_last_connected_port_and_mstb()  argument
3095 		found_port = drm_dp_get_last_connected_port_to_mstb(mstb);  in drm_dp_get_last_connected_port_and_mstb()
3104 			mstb = found_port->parent;  in drm_dp_get_last_connected_port_and_mstb()
3118 	struct drm_dp_mst_branch *mstb;  in drm_dp_payload_send_msg()  local
3124 	mstb = drm_dp_mst_topology_get_mstb_validated(mgr, port->parent);  in drm_dp_payload_send_msg()
3125 	if (!mstb) {  in drm_dp_payload_send_msg()
3126 		mstb = drm_dp_get_last_connected_port_and_mstb(mgr,  in drm_dp_payload_send_msg()
3130 		if (!mstb)  in drm_dp_payload_send_msg()
3143 	txmsg->dst = mstb;  in drm_dp_payload_send_msg()
3158 	ret = drm_dp_mst_wait_tx_reply(mstb, txmsg);  in drm_dp_payload_send_msg()
3167 	drm_dp_mst_topology_put_mstb(mstb);  in drm_dp_payload_send_msg()
3460 	struct drm_dp_mst_branch *mstb;  in drm_dp_send_dpcd_read()  local
3462 	mstb = drm_dp_mst_topology_get_mstb_validated(mgr, port->parent);  in drm_dp_send_dpcd_read()
3463 	if (!mstb)  in drm_dp_send_dpcd_read()
3477 	ret = drm_dp_mst_wait_tx_reply(mstb, txmsg);  in drm_dp_send_dpcd_read()
3483 			    mstb, port->port_num, offset, size);  in drm_dp_send_dpcd_read()
3500 	drm_dp_mst_topology_put_mstb(mstb);  in drm_dp_send_dpcd_read()
3511 	struct drm_dp_mst_branch *mstb;  in drm_dp_send_dpcd_write()  local
3513 	mstb = drm_dp_mst_topology_get_mstb_validated(mgr, port->parent);  in drm_dp_send_dpcd_write()
3514 	if (!mstb)  in drm_dp_send_dpcd_write()
3524 	txmsg->dst = mstb;  in drm_dp_send_dpcd_write()
3528 	ret = drm_dp_mst_wait_tx_reply(mstb, txmsg);  in drm_dp_send_dpcd_write()
3538 	drm_dp_mst_topology_put_mstb(mstb);  in drm_dp_send_dpcd_write()
3553 				    struct drm_dp_mst_branch *mstb,  in drm_dp_send_up_ack_reply()  argument
3562 	txmsg->dst = mstb;  in drm_dp_send_up_ack_reply()
3640 	struct drm_dp_mst_branch *mstb = NULL;  in drm_dp_mst_topology_mgr_set_mst()  local
3660 		mstb = drm_dp_add_mst_branch_device(1, NULL);  in drm_dp_mst_topology_mgr_set_mst()
3661 		if (mstb == NULL) {  in drm_dp_mst_topology_mgr_set_mst()
3665 		mstb->mgr = mgr;  in drm_dp_mst_topology_mgr_set_mst()
3668 		mgr->mst_primary = mstb;  in drm_dp_mst_topology_mgr_set_mst()
3686 		mstb = mgr->mst_primary;  in drm_dp_mst_topology_mgr_set_mst()
3698 	if (mstb)  in drm_dp_mst_topology_mgr_set_mst()
3699 		drm_dp_mst_topology_put_mstb(mstb);  in drm_dp_mst_topology_mgr_set_mst()
3706 drm_dp_mst_topology_mgr_invalidate_mstb(struct drm_dp_mst_branch *mstb)  in drm_dp_mst_topology_mgr_invalidate_mstb()  argument
3711 	mstb->link_address_sent = false;  in drm_dp_mst_topology_mgr_invalidate_mstb()
3713 	list_for_each_entry(port, &mstb->ports, next)  in drm_dp_mst_topology_mgr_invalidate_mstb()
3714 		if (port->mstb)  in drm_dp_mst_topology_mgr_invalidate_mstb()
3715 			drm_dp_mst_topology_mgr_invalidate_mstb(port->mstb);  in drm_dp_mst_topology_mgr_invalidate_mstb()
3858 		      struct drm_dp_mst_branch **mstb)  in drm_dp_get_one_sb_msg()  argument
3872 		*mstb = NULL;  in drm_dp_get_one_sb_msg()
3891 		*mstb = drm_dp_get_mst_branch_device(mgr, hdr.lct, hdr.rad);  in drm_dp_get_one_sb_msg()
3892 		if (!*mstb) {  in drm_dp_get_one_sb_msg()
3944 	const struct drm_dp_mst_branch *mstb = txmsg->dst;  in verify_rx_request_type()  local
3952 	drm_dp_mst_rad_to_str(mstb->rad, mstb->lct, rad_str, sizeof(rad_str));  in verify_rx_request_type()
3955 		    mstb, hdr->seqno, mstb->lct, rad_str,  in verify_rx_request_type()
3965 	struct drm_dp_mst_branch *mstb = NULL;  in drm_dp_mst_handle_down_rep()  local
3968 	if (!drm_dp_get_one_sb_msg(mgr, false, &mstb))  in drm_dp_mst_handle_down_rep()
3982 	if (!txmsg || txmsg->dst != mstb) {  in drm_dp_mst_handle_down_rep()
3987 			    mstb, hdr->seqno, hdr->lct, hdr->rad[0], msg->msg[0]);  in drm_dp_mst_handle_down_rep()
4022 	if (mstb)  in drm_dp_mst_handle_down_rep()
4023 		drm_dp_mst_topology_put_mstb(mstb);  in drm_dp_mst_handle_down_rep()
4048 	struct drm_dp_mst_branch *mstb = NULL;  in drm_dp_mst_process_up_req()  local
4062 			mstb = drm_dp_get_mst_branch_device_by_guid(mgr, guid);  in drm_dp_mst_process_up_req()
4064 		mstb = drm_dp_get_mst_branch_device(mgr, hdr->lct, hdr->rad);  in drm_dp_mst_process_up_req()
4067 	if (!mstb) {  in drm_dp_mst_process_up_req()
4077 			dowork = drm_dp_mst_handle_conn_stat(mstb, &msg->u.conn_stat);  in drm_dp_mst_process_up_req()
4082 	drm_dp_mst_topology_put_mstb(mstb);  in drm_dp_mst_process_up_req()
4835 				 struct drm_dp_mst_branch *mstb)  in drm_dp_mst_dump_mstb()  argument
4838 	int tabs = mstb->lct;  in drm_dp_mst_dump_mstb()
4846 	seq_printf(m, "%smstb - [%p]: num_ports: %d\n", prefix, mstb, mstb->num_ports);  in drm_dp_mst_dump_mstb()
4847 	list_for_each_entry(port, &mstb->ports, next) {  in drm_dp_mst_dump_mstb()
4860 		if (port->mstb)  in drm_dp_mst_dump_mstb()
4861 			drm_dp_mst_dump_mstb(m, port->mstb);  in drm_dp_mst_dump_mstb()
5024 drm_dp_delayed_destroy_mstb(struct drm_dp_mst_branch *mstb)  in drm_dp_delayed_destroy_mstb()  argument
5026 	struct drm_dp_mst_topology_mgr *mgr = mstb->mgr;  in drm_dp_delayed_destroy_mstb()
5032 	list_for_each_entry_safe(port, port_tmp, &mstb->ports, next) {  in drm_dp_delayed_destroy_mstb()
5039 	mutex_lock(&mstb->mgr->qlock);  in drm_dp_delayed_destroy_mstb()
5041 		if (txmsg->dst != mstb)  in drm_dp_delayed_destroy_mstb()
5048 	mutex_unlock(&mstb->mgr->qlock);  in drm_dp_delayed_destroy_mstb()
5051 		wake_up_all(&mstb->mgr->tx_waitq);  in drm_dp_delayed_destroy_mstb()
5053 	drm_dp_mst_put_mstb_malloc(mstb);  in drm_dp_delayed_destroy_mstb()
5072 			struct drm_dp_mst_branch *mstb;  in drm_dp_delayed_destroy_work()  local
5075 			mstb = list_first_entry_or_null(&mgr->destroy_branch_device_list,  in drm_dp_delayed_destroy_work()
5078 			if (mstb)  in drm_dp_delayed_destroy_work()
5079 				list_del(&mstb->destroy_next);  in drm_dp_delayed_destroy_work()
5082 			if (!mstb)  in drm_dp_delayed_destroy_work()
5085 			drm_dp_delayed_destroy_mstb(mstb);  in drm_dp_delayed_destroy_work()
5214 	if (!parent->mstb)  in drm_dp_mst_port_downstream_of_parent_locked()
5217 	return drm_dp_mst_port_downstream_of_branch(port, parent->mstb);  in drm_dp_mst_port_downstream_of_parent_locked()
5251 drm_dp_mst_atomic_check_mstb_bw_limit(struct drm_dp_mst_branch *mstb,  in drm_dp_mst_atomic_check_mstb_bw_limit()  argument
5265 		    !drm_dp_mst_port_downstream_of_branch(payload->port, mstb))  in drm_dp_mst_atomic_check_mstb_bw_limit()
5274 	if (mstb->port_parent)  in drm_dp_mst_atomic_check_mstb_bw_limit()
5275 		drm_dbg_atomic(mstb->mgr->dev,  in drm_dp_mst_atomic_check_mstb_bw_limit()
5277 			       mstb->port_parent->parent, mstb->port_parent, mstb);  in drm_dp_mst_atomic_check_mstb_bw_limit()
5279 		drm_dbg_atomic(mstb->mgr->dev, "[MSTB:%p] Checking bandwidth limits\n", mstb);  in drm_dp_mst_atomic_check_mstb_bw_limit()
5281 	list_for_each_entry(port, &mstb->ports, next) {  in drm_dp_mst_atomic_check_mstb_bw_limit()
5322 		pbn_used = drm_dp_mst_atomic_check_mstb_bw_limit(port->mstb,  in drm_dp_mst_atomic_check_port_bw_limit()
5814 static int drm_dp_mst_i2c_read(struct drm_dp_mst_branch *mstb,  in drm_dp_mst_i2c_read()  argument
5843 	txmsg->dst = mstb;  in drm_dp_mst_i2c_read()
5848 	ret = drm_dp_mst_wait_tx_reply(mstb, txmsg);  in drm_dp_mst_i2c_read()
5867 static int drm_dp_mst_i2c_write(struct drm_dp_mst_branch *mstb,  in drm_dp_mst_i2c_write()  argument
5891 		txmsg->dst = mstb;  in drm_dp_mst_i2c_write()
5896 		ret = drm_dp_mst_wait_tx_reply(mstb, txmsg);  in drm_dp_mst_i2c_write()
5919 	struct drm_dp_mst_branch *mstb;  in drm_dp_mst_i2c_xfer()  local
5923 	mstb = drm_dp_mst_topology_get_mstb_validated(mgr, port->parent);  in drm_dp_mst_i2c_xfer()
5924 	if (!mstb)  in drm_dp_mst_i2c_xfer()
5928 		ret = drm_dp_mst_i2c_read(mstb, port, msgs, num);  in drm_dp_mst_i2c_xfer()
5930 		ret = drm_dp_mst_i2c_write(mstb, port, msgs, num);  in drm_dp_mst_i2c_xfer()
5936 	drm_dp_mst_topology_put_mstb(mstb);  in drm_dp_mst_i2c_xfer()
6024 	    port->mstb &&  in drm_dp_mst_is_virtual_dpcd()
6025 	    port->mstb->num_ports == 2) {  in drm_dp_mst_is_virtual_dpcd()
6026 		list_for_each_entry(downstream_port, &port->mstb->ports, next) {  in drm_dp_mst_is_virtual_dpcd()