1 // SPDX-License-Identifier: GPL-2.0
89 		return -EOPNOTSUPP;  in usb4_native_switch_op()
114 	const struct tb_cm_ops *cm_ops = sw->tb->cm_ops;  in __usb4_switch_op()
117 		return -EINVAL;  in __usb4_switch_op()
124 	if (cm_ops->usb4_switch_op) {  in __usb4_switch_op()
127 		ret = cm_ops->usb4_switch_op(sw, opcode, metadata, status,  in __usb4_switch_op()
130 		if (ret != -EOPNOTSUPP)  in __usb4_switch_op()
166 	if (!device_may_wakeup(&sw->dev))  in usb4_switch_check_wakes()
185 		if (!port->cap_usb4)  in usb4_switch_check_wakes()
189 				 port->cap_usb4 + PORT_CS_18, 1))  in usb4_switch_check_wakes()
200 		usb4 = port->usb4;  in usb4_switch_check_wakes()
201 		if (device_may_wakeup(&usb4->dev) && wakeup_usb4)  in usb4_switch_check_wakes()
202 			pm_wakeup_event(&usb4->dev, 0);  in usb4_switch_check_wakes()
208 		pm_wakeup_event(&sw->dev, 0);  in usb4_switch_check_wakes()
215 	if (!port->cap_usb4)  in link_is_usb4()
219 			 port->cap_usb4 + PORT_CS_18, 1))  in link_is_usb4()
226  * usb4_switch_setup() - Additional setup for USB4 device
257 	sw->link_usb4 = link_is_usb4(down);  in usb4_switch_setup()
258 	tb_sw_dbg(sw, "link: %s\n", sw->link_usb4 ? "USB4" : "TBT");  in usb4_switch_setup()
270 	if (tb_acpi_may_tunnel_usb3() && sw->link_usb4 &&  in usb4_switch_setup()
299  * usb4_switch_configuration_valid() - Set tunneling configuration to be valid
307  * Returns %0 in success and negative errno otherwise.
332  * usb4_switch_read_uid() - Read UID from USB4 router
336  * Reads 64-bit UID from USB4 router config space.
361 	return status ? -EIO : 0;  in usb4_switch_drom_read_block()
365  * usb4_switch_drom_read() - Read arbitrary bytes from USB4 router DROM
372  * should always work but for hosts it may return %-EOPNOTSUPP in which
383  * usb4_switch_lane_bonding_possible() - Are conditions met for lane bonding
396 	ret = tb_port_read(up, &val, TB_CFG_PORT, up->cap_usb4 + PORT_CS_18, 1);  in usb4_switch_lane_bonding_possible()
404  * usb4_switch_set_wake() - Enabled/disable wake
428 		if (!port->cap_usb4)  in usb4_switch_set_wake()
432 				   port->cap_usb4 + PORT_CS_19, 1);  in usb4_switch_set_wake()
442 			usb4 = port->usb4;  in usb4_switch_set_wake()
445 			      device_may_wakeup(&usb4->dev)) && !configured)  in usb4_switch_set_wake()
448 			      device_may_wakeup(&usb4->dev)) && configured)  in usb4_switch_set_wake()
455 				    port->cap_usb4 + PORT_CS_19, 1);  in usb4_switch_set_wake()
486  * usb4_switch_set_sleep() - Prepare the router to enter sleep
513  * usb4_switch_nvm_sector_size() - Return router NVM sector size
518  * %-EOPNOTSUPP.
532 		return status == 0x2 ? -EOPNOTSUPP : -EIO;  in usb4_switch_nvm_sector_size()
555 	return status ? -EIO : 0;  in usb4_switch_nvm_read_block()
559  * usb4_switch_nvm_read() - Read arbitrary bytes from router NVM
566  * %-EOPNOTSUPP.
576  * usb4_switch_nvm_set_offset() - Set NVM write offset
583  * Returns %0 in success and negative errno if there was a failure.
600 	return status ? -EIO : 0;  in usb4_switch_nvm_set_offset()
615 	return status ? -EIO : 0;  in usb4_switch_nvm_write_next_block()
619  * usb4_switch_nvm_write() - Write to the router NVM
626  * write is not supported returns %-EOPNOTSUPP.
642  * usb4_switch_nvm_authenticate() - Authenticate new NVM
648  * running. In case of failure returns negative errno.
664 	case -EACCES:  in usb4_switch_nvm_authenticate()
665 	case -ENOTCONN:  in usb4_switch_nvm_authenticate()
666 	case -ETIMEDOUT:  in usb4_switch_nvm_authenticate()
675  * usb4_switch_nvm_authenticate_status() - Read status of last NVM authenticate
681  * and the status code is placed in @status. Returns negative errno in case
688 	const struct tb_cm_ops *cm_ops = sw->tb->cm_ops;  in usb4_switch_nvm_authenticate_status()
693 	if (cm_ops->usb4_switch_nvm_authenticate_status) {  in usb4_switch_nvm_authenticate_status()
694 		ret = cm_ops->usb4_switch_nvm_authenticate_status(sw, status);  in usb4_switch_nvm_authenticate_status()
695 		if (ret != -EOPNOTSUPP)  in usb4_switch_nvm_authenticate_status()
707 			return -EBUSY;  in usb4_switch_nvm_authenticate_status()
709 			return -EOPNOTSUPP;  in usb4_switch_nvm_authenticate_status()
721  * usb4_switch_credits_init() - Read buffer allocation parameters
725  * allocation fields accordingly. Specifically @sw->credits_allocation
728  * Returns %0 on success and negative errno otherwise.
745 		return -EIO;  in usb4_switch_credits_init()
749 		return -EMSGSIZE;  in usb4_switch_credits_init()
751 	max_usb3 = -1;  in usb4_switch_credits_init()
752 	min_dp_aux = -1;  in usb4_switch_credits_init()
753 	min_dp_main = -1;  in usb4_switch_credits_init()
754 	max_pcie = -1;  in usb4_switch_credits_init()
755 	max_dma = -1;  in usb4_switch_credits_init()
795 	 * issues, log a warning and fall back using the hard-coded  in usb4_switch_credits_init()
843 	sw->credit_allocation = true;  in usb4_switch_credits_init()
845 		sw->max_usb3_credits = max_usb3;  in usb4_switch_credits_init()
847 		sw->min_dp_aux_credits = min_dp_aux;  in usb4_switch_credits_init()
849 		sw->min_dp_main_credits = min_dp_main;  in usb4_switch_credits_init()
851 		sw->max_pcie_credits = max_pcie;  in usb4_switch_credits_init()
853 		sw->max_dma_credits = max_dma;  in usb4_switch_credits_init()
858 	return -EINVAL;  in usb4_switch_credits_init()
862  * usb4_switch_query_dp_resource() - Query availability of DP IN resource
872 	u32 metadata = in->port;  in usb4_switch_query_dp_resource()
882 	if (ret == -EOPNOTSUPP)  in usb4_switch_query_dp_resource()
891  * usb4_switch_alloc_dp_resource() - Allocate DP IN resource
897  * returns negative errno, in particular %-EBUSY if the resource is
902 	u32 metadata = in->port;  in usb4_switch_alloc_dp_resource()
908 	if (ret == -EOPNOTSUPP)  in usb4_switch_alloc_dp_resource()
913 	return status ? -EBUSY : 0;  in usb4_switch_alloc_dp_resource()
917  * usb4_switch_dealloc_dp_resource() - Releases allocated DP IN resource
925 	u32 metadata = in->port;  in usb4_switch_dealloc_dp_resource()
931 	if (ret == -EOPNOTSUPP)  in usb4_switch_dealloc_dp_resource()
936 	return status ? -EIO : 0;  in usb4_switch_dealloc_dp_resource()
950 		if (!p->link_nr) {  in usb4_port_idx()
961  * usb4_switch_map_pcie_down() - Map USB4 port to a PCIe downstream adapter
992  * usb4_switch_map_usb3_down() - Map USB4 port to a USB3 downstream adapter
1023  * usb4_switch_add_ports() - Add USB4 ports for this router
1029  * Return %0 in case of success and negative errno in case of failure.
1043 		if (!port->cap_usb4)  in usb4_switch_add_ports()
1052 		port->usb4 = usb4;  in usb4_switch_add_ports()
1059  * usb4_switch_remove_ports() - Removes USB4 ports from this router
1069 		if (port->usb4) {  in usb4_switch_remove_ports()
1070 			usb4_port_device_remove(port->usb4);  in usb4_switch_remove_ports()
1071 			port->usb4 = NULL;  in usb4_switch_remove_ports()
1077  * usb4_port_unlock() - Unlock USB4 downstream port
1097  * usb4_port_hotplug_enable() - Enables hotplug for a port
1101  * to be used on lane, DP-IN, and DP-OUT adapters.
1121 	if (!port->cap_usb4)  in usb4_port_set_configured()
1122 		return -EINVAL;  in usb4_port_set_configured()
1125 			   port->cap_usb4 + PORT_CS_19, 1);  in usb4_port_set_configured()
1135 			     port->cap_usb4 + PORT_CS_19, 1);  in usb4_port_set_configured()
1139  * usb4_port_configure() - Set USB4 port configured
1150  * usb4_port_unconfigure() - Set USB4 port unconfigured
1165 	if (!port->cap_usb4)  in usb4_set_xdomain_configured()
1166 		return -EINVAL;  in usb4_set_xdomain_configured()
1169 			   port->cap_usb4 + PORT_CS_19, 1);  in usb4_set_xdomain_configured()
1179 			     port->cap_usb4 + PORT_CS_19, 1);  in usb4_set_xdomain_configured()
1183  * usb4_port_configure_xdomain() - Configure port for XDomain
1188  * the link type. Returns %0 in success and negative errno in failure.
1192 	xd->link_usb4 = link_is_usb4(port);  in usb4_port_configure_xdomain()
1197  * usb4_port_unconfigure_xdomain() - Unconfigure port for XDomain
1226 	return -ETIMEDOUT;  in usb4_port_wait_for_bit()
1232 		return -EINVAL;  in usb4_port_read_data()
1234 	return tb_port_read(port, data, TB_CFG_PORT, port->cap_usb4 + PORT_CS_2,  in usb4_port_read_data()
1242 		return -EINVAL;  in usb4_port_write_data()
1244 	return tb_port_write(port, data, TB_CFG_PORT, port->cap_usb4 + PORT_CS_2,  in usb4_port_write_data()
1255 	if (!port->cap_usb4)  in usb4_port_sb_read()
1256 		return -EINVAL;  in usb4_port_sb_read()
1266 			    port->cap_usb4 + PORT_CS_1, 1);  in usb4_port_sb_read()
1270 	ret = usb4_port_wait_for_bit(port, port->cap_usb4 + PORT_CS_1,  in usb4_port_sb_read()
1276 			    port->cap_usb4 + PORT_CS_1, 1);  in usb4_port_sb_read()
1281 		return -ENODEV;  in usb4_port_sb_read()
1283 		return -EIO;  in usb4_port_sb_read()
1295 	if (!port->cap_usb4)  in usb4_port_sb_write()
1296 		return -EINVAL;  in usb4_port_sb_write()
1313 			    port->cap_usb4 + PORT_CS_1, 1);  in usb4_port_sb_write()
1317 	ret = usb4_port_wait_for_bit(port, port->cap_usb4 + PORT_CS_1,  in usb4_port_sb_write()
1323 			    port->cap_usb4 + PORT_CS_1, 1);  in usb4_port_sb_write()
1328 		return -ENODEV;  in usb4_port_sb_write()
1330 		return -EIO;  in usb4_port_sb_write()
1341 		return -EAGAIN;  in usb4_port_sb_opcode_err_to_errno()
1343 		return -EOPNOTSUPP;  in usb4_port_sb_opcode_err_to_errno()
1345 		return -EIO;  in usb4_port_sb_opcode_err_to_errno()
1375 	return -ETIMEDOUT;  in usb4_port_sb_op()
1394  * usb4_port_router_offline() - Put the USB4 port to offline mode
1401  * Returns %0 in case of success and negative errno if there was an
1410  * usb4_port_router_online() - Put the USB4 port back to online
1421  * usb4_port_enumerate_retimers() - Send RT broadcast transaction
1426  * %0 in case of success and negative errno if there was an error.
1438  * usb4_port_clx_supported() - Check if CLx is supported by the link
1450 			   port->cap_usb4 + PORT_CS_18, 1);  in usb4_port_clx_supported()
1458  * usb4_port_asym_supported() - If the port supports asymmetric link
1468 	if (!port->cap_usb4)  in usb4_port_asym_supported()
1471 	if (tb_port_read(port, &val, TB_CFG_PORT, port->cap_usb4 + PORT_CS_18, 1))  in usb4_port_asym_supported()
1478  * usb4_port_asym_set_link_width() - Set link width to asymmetric or symmetric
1490 	if (!port->cap_phy)  in usb4_port_asym_set_link_width()
1491 		return -EINVAL;  in usb4_port_asym_set_link_width()
1494 			   port->cap_phy + LANE_ADP_CS_1, 1);  in usb4_port_asym_set_link_width()
1513 		return -EINVAL;  in usb4_port_asym_set_link_width()
1517 			     port->cap_phy + LANE_ADP_CS_1, 1);  in usb4_port_asym_set_link_width()
1521  * usb4_port_asym_start() - Start symmetry change and wait for completion
1528  * Returns %0 in case of success, %-ETIMEDOUT if case of timeout or
1529  * a negative errno in case of a failure.
1537 			   port->cap_usb4 + PORT_CS_19, 1);  in usb4_port_asym_start()
1545 			    port->cap_usb4 + PORT_CS_19, 1);  in usb4_port_asym_start()
1553 	ret = usb4_port_wait_for_bit(port, port->cap_usb4 + PORT_CS_19,  in usb4_port_asym_start()
1559 	return usb4_port_wait_for_bit(port, port->cap_usb4 + PORT_CS_18,  in usb4_port_asym_start()
1564  * usb4_port_margining_caps() - Read USB4 port marginig capabilities
1584  * usb4_port_hw_margin() - Run hardware lane margining on port
1627  * usb4_port_sw_margin() - Run software lane margining on port
1637  * success and negative errno otherwise.
1663  * usb4_port_sw_margin_errors() - Read the software margining error counters
1668  * Returns %0 in success and negative errno otherwise.
1692  * usb4_port_retimer_set_inbound_sbtx() - Enable sideband channel transactions
1706 	if (ret != -ENODEV)  in usb4_port_retimer_set_inbound_sbtx()
1719  * usb4_port_retimer_unset_inbound_sbtx() - Disable sideband channel transactions
1733  * usb4_port_retimer_read() - Read from retimer sideband registers
1743  * present at given @index returns %-ENODEV. In any other failure
1744  * returns negative errno.
1754  * usb4_port_retimer_write() - Write to retimer sideband registers
1763  * is no retimer present at given @index returns %-ENODEV. In any other
1764  * failure returns negative errno.
1774  * usb4_port_retimer_is_last() - Is the retimer last on-board retimer
1779  * Type-C port) this function returns %1. If it is not returns %0. If
1780  * the retimer is not present returns %-ENODEV. Otherwise returns
1781  * negative errno.
1799  * usb4_port_retimer_nvm_sector_size() - Read retimer NVM sector size
1805  * upgrade for example. Returns sector size in bytes or negative errno
1806  * in case of error. Specifically returns %-ENODEV if there is no
1825  * usb4_port_retimer_nvm_set_offset() - Set NVM write offset
1833  * Returns %0 in success and negative errno if there was a failure.
1864 	struct tb_port *port = info->port;  in usb4_port_retimer_nvm_write_next_block()
1865 	u8 index = info->index;  in usb4_port_retimer_nvm_write_next_block()
1878  * usb4_port_retimer_nvm_write() - Write to retimer NVM
1886  * upgrade. Returns %0 if the data was written successfully and negative
1887  * errno in case of failure. Specifically returns %-ENODEV if there is
1905  * usb4_port_retimer_nvm_authenticate() - Start retimer NVM upgrade
1930  * usb4_port_retimer_nvm_authenticate_status() - Read status of NVM upgrade
1940  * reading the status fails, returns negative errno.
1959 	case -EAGAIN:  in usb4_port_retimer_nvm_authenticate_status()
1977 	struct tb_port *port = info->port;  in usb4_port_retimer_nvm_read_block()
1978 	u8 index = info->index;  in usb4_port_retimer_nvm_read_block()
2000  * usb4_port_retimer_nvm_read() - Read contents of retimer NVM
2008  * read was successful and negative errno in case of failure.
2009  * Specifically returns %-ENODEV if there is no retimer at @index.
2024 	if (port->max_bw)  in usb4_usb3_port_max_bandwidth()
2025 		return min(bw, port->max_bw);  in usb4_usb3_port_max_bandwidth()
2030  * usb4_usb3_port_max_link_rate() - Maximum support USB3 link rate
2034  * Negative errno in case of error.
2042 		return -EINVAL;  in usb4_usb3_port_max_link_rate()
2045 			   port->cap_adap + ADP_USB3_CS_4, 1);  in usb4_usb3_port_max_link_rate()
2061 		return -EINVAL;  in usb4_usb3_port_cm_request()
2062 	if (tb_route(port->sw))  in usb4_usb3_port_cm_request()
2063 		return -EINVAL;  in usb4_usb3_port_cm_request()
2066 			   port->cap_adap + ADP_USB3_CS_2, 1);  in usb4_usb3_port_cm_request()
2076 			    port->cap_adap + ADP_USB3_CS_2, 1);  in usb4_usb3_port_cm_request()
2085 	return usb4_port_wait_for_bit(port, port->cap_adap + ADP_USB3_CS_1,  in usb4_usb3_port_cm_request()
2111 	/* 1 uframe is 1/8 ms (125 us) -> 1 / 8000 s */  in mbps_to_usb3_bw()
2124 			   port->cap_adap + ADP_USB3_CS_2, 1);  in usb4_usb3_port_read_allocated_bandwidth()
2129 			   port->cap_adap + ADP_USB3_CS_3, 1);  in usb4_usb3_port_read_allocated_bandwidth()
2145  * usb4_usb3_port_allocated_bandwidth() - Bandwidth allocated for USB3
2151  * @downstream_bw in Mb/s. Returns %0 in case of success and negative
2178 			   port->cap_adap + ADP_USB3_CS_1, 1);  in usb4_usb3_port_read_consumed_bandwidth()
2183 			   port->cap_adap + ADP_USB3_CS_3, 1);  in usb4_usb3_port_read_consumed_bandwidth()
2215 		return -EINVAL;  in usb4_usb3_port_write_allocated_bandwidth()
2218 			    port->cap_adap + ADP_USB3_CS_3, 1);  in usb4_usb3_port_write_allocated_bandwidth()
2228 			   port->cap_adap + ADP_USB3_CS_2, 1);  in usb4_usb3_port_write_allocated_bandwidth()
2237 			     port->cap_adap + ADP_USB3_CS_2, 1);  in usb4_usb3_port_write_allocated_bandwidth()
2241  * usb4_usb3_port_allocate_bandwidth() - Allocate bandwidth for USB3
2254  * Returns %0 in case of success and negative errno if there was a
2289  * usb4_usb3_port_release_bandwidth() - Release allocated USB3 bandwidth
2297  * Returns 0% in success and negative errno in case of failure.
2339 	if (!tb_switch_is_usb4(port->sw))  in is_usb4_dpin()
2345  * usb4_dp_port_set_cm_id() - Assign CM ID to the DP IN adapter
2349  * Sets CM ID for the @port. Returns %0 on success and negative errno
2350  * otherwise. Speficially returns %-EOPNOTSUPP if the @port does not
2359 		return -EOPNOTSUPP;  in usb4_dp_port_set_cm_id()
2362 			   port->cap_adap + ADP_DP_CS_2, 1);  in usb4_dp_port_set_cm_id()
2370 			     port->cap_adap + ADP_DP_CS_2, 1);  in usb4_dp_port_set_cm_id()
2374  * usb4_dp_port_bandwidth_mode_supported() - Is the bandwidth allocation mode
2390 			   port->cap_adap + DP_LOCAL_CAP, 1);  in usb4_dp_port_bandwidth_mode_supported()
2398  * usb4_dp_port_bandwidth_mode_enabled() - Is the bandwidth allocation mode
2414 			   port->cap_adap + ADP_DP_CS_8, 1);  in usb4_dp_port_bandwidth_mode_enabled()
2422  * usb4_dp_port_set_cm_bandwidth_mode_supported() - Set/clear CM support for
2428  * of the DP IN adapter. Returns %0 in success and negative errno
2429  * otherwise. Specifically returns %-OPNOTSUPP if the passed in adapter
2439 		return -EOPNOTSUPP;  in usb4_dp_port_set_cm_bandwidth_mode_supported()
2442 			   port->cap_adap + ADP_DP_CS_2, 1);  in usb4_dp_port_set_cm_bandwidth_mode_supported()
2452 			     port->cap_adap + ADP_DP_CS_2, 1);  in usb4_dp_port_set_cm_bandwidth_mode_supported()
2456  * usb4_dp_port_group_id() - Return Group ID assigned for the adapter
2461  * %-EOPNOTSUPP is returned.
2469 		return -EOPNOTSUPP;  in usb4_dp_port_group_id()
2472 			   port->cap_adap + ADP_DP_CS_2, 1);  in usb4_dp_port_group_id()
2480  * usb4_dp_port_set_group_id() - Set adapter Group ID
2485  * Returns %0 in case of success and negative errno otherwise.
2486  * Specifically returns %-EOPNOTSUPP if the adapter does not support
2495 		return -EOPNOTSUPP;  in usb4_dp_port_set_group_id()
2498 			   port->cap_adap + ADP_DP_CS_2, 1);  in usb4_dp_port_set_group_id()
2506 			     port->cap_adap + ADP_DP_CS_2, 1);  in usb4_dp_port_set_group_id()
2510  * usb4_dp_port_nrd() - Read non-reduced rate and lanes
2512  * @rate: Non-reduced rate in Mb/s is placed here
2513  * @lanes: Non-reduced lanes are placed here
2515  * Reads the non-reduced rate and lanes from the DP IN adapter. Returns
2516  * %0 in success and negative errno otherwise. Specifically returns
2517  * %-EOPNOTSUPP if the adapter does not support this.
2525 		return -EOPNOTSUPP;  in usb4_dp_port_nrd()
2528 			   port->cap_adap + ADP_DP_CS_2, 1);  in usb4_dp_port_nrd()
2565  * usb4_dp_port_set_nrd() - Set non-reduced rate and lanes
2567  * @rate: Non-reduced rate in Mb/s
2568  * @lanes: Non-reduced lanes
2571  * the non-reduced values for the DP IN adapter. Returns %0 in success
2572  * and negative errno otherwise. If the adapter does not support this
2573  * %-EOPNOTSUPP is returned.
2581 		return -EOPNOTSUPP;  in usb4_dp_port_set_nrd()
2584 			   port->cap_adap + ADP_DP_CS_2, 1);  in usb4_dp_port_set_nrd()
2606 		return -EINVAL;  in usb4_dp_port_set_nrd()
2621 		return -EINVAL;  in usb4_dp_port_set_nrd()
2625 			     port->cap_adap + ADP_DP_CS_2, 1);  in usb4_dp_port_set_nrd()
2629  * usb4_dp_port_granularity() - Return granularity for the bandwidth values
2633  * not support bandwidth allocation mode returns %-EOPNOTSUPP and negative
2642 		return -EOPNOTSUPP;  in usb4_dp_port_granularity()
2645 			   port->cap_adap + ADP_DP_CS_2, 1);  in usb4_dp_port_granularity()
2661 	return -EINVAL;  in usb4_dp_port_granularity()
2665  * usb4_dp_port_set_granularity() - Set granularity for the bandwidth values
2670  * bandwidth. Returns %0 in success and negative errno otherwise. If the
2671  * adapter does not support this %-EOPNOTSUPP is returned.
2679 		return -EOPNOTSUPP;  in usb4_dp_port_set_granularity()
2682 			   port->cap_adap + ADP_DP_CS_2, 1);  in usb4_dp_port_set_granularity()
2699 		return -EINVAL;  in usb4_dp_port_set_granularity()
2703 			     port->cap_adap + ADP_DP_CS_2, 1);  in usb4_dp_port_set_granularity()
2707  * usb4_dp_port_set_estimated_bandwidth() - Set estimated bandwidth
2714  * and negative errno otherwise. Specifically returns %-EOPNOTSUPP if
2723 		return -EOPNOTSUPP;  in usb4_dp_port_set_estimated_bandwidth()
2731 			   port->cap_adap + ADP_DP_CS_2, 1);  in usb4_dp_port_set_estimated_bandwidth()
2739 			     port->cap_adap + ADP_DP_CS_2, 1);  in usb4_dp_port_set_estimated_bandwidth()
2743  * usb4_dp_port_allocated_bandwidth() - Return allocated bandwidth
2747  * account the programmed granularity). Returns negative errno in case
2756 		return -EOPNOTSUPP;  in usb4_dp_port_allocated_bandwidth()
2764 			   port->cap_adap + DP_STATUS, 1);  in usb4_dp_port_allocated_bandwidth()
2780 			   port->cap_adap + ADP_DP_CS_2, 1);  in __usb4_dp_port_set_cm_ack()
2790 			     port->cap_adap + ADP_DP_CS_2, 1);  in __usb4_dp_port_set_cm_ack()
2812 				   port->cap_adap + ADP_DP_CS_8, 1);  in usb4_dp_port_wait_and_clear_cm_ack()
2823 		return -ETIMEDOUT;  in usb4_dp_port_wait_and_clear_cm_ack()
2826 			   port->cap_adap + ADP_DP_CS_2, 1);  in usb4_dp_port_wait_and_clear_cm_ack()
2832 			     port->cap_adap + ADP_DP_CS_2, 1);  in usb4_dp_port_wait_and_clear_cm_ack()
2836  * usb4_dp_port_allocate_bandwidth() - Set allocated bandwidth
2842  * success and negative errno in case of error.
2850 		return -EOPNOTSUPP;  in usb4_dp_port_allocate_bandwidth()
2858 			   port->cap_adap + DP_STATUS, 1);  in usb4_dp_port_allocate_bandwidth()
2866 			    port->cap_adap + DP_STATUS, 1);  in usb4_dp_port_allocate_bandwidth()
2878  * usb4_dp_port_requested_bandwidth() - Read requested bandwidth
2883  * error returns negative errno. Specifically returns %-EOPNOTSUPP if
2893 		return -EOPNOTSUPP;  in usb4_dp_port_requested_bandwidth()
2901 			   port->cap_adap + ADP_DP_CS_8, 1);  in usb4_dp_port_requested_bandwidth()
2906 		return -ENODATA;  in usb4_dp_port_requested_bandwidth()
2912  * usb4_pci_port_set_ext_encapsulation() - Enable/disable extended encapsulation
2918  * success and negative errno otherwise.
2926 		return -EINVAL;  in usb4_pci_port_set_ext_encapsulation()
2929 			   port->cap_adap + ADP_PCIE_CS_1, 1);  in usb4_pci_port_set_ext_encapsulation()
2939 			     port->cap_adap + ADP_PCIE_CS_1, 1);  in usb4_pci_port_set_ext_encapsulation()