1 // SPDX-License-Identifier: GPL-2.0
87 		return -EOPNOTSUPP;  in usb4_native_switch_op()
112 	const struct tb_cm_ops *cm_ops = sw->tb->cm_ops;  in __usb4_switch_op()
115 		return -EINVAL;  in __usb4_switch_op()
122 	if (cm_ops->usb4_switch_op) {  in __usb4_switch_op()
125 		ret = cm_ops->usb4_switch_op(sw, opcode, metadata, status,  in __usb4_switch_op()
128 		if (ret != -EOPNOTSUPP)  in __usb4_switch_op()
157  * usb4_switch_check_wakes() - Check for wakes and notify PM core about them
186 		if (!port->cap_usb4)  in usb4_switch_check_wakes()
190 				 port->cap_usb4 + PORT_CS_18, 1))  in usb4_switch_check_wakes()
201 		usb4 = port->usb4;  in usb4_switch_check_wakes()
202 		if (device_may_wakeup(&usb4->dev) && wakeup_usb4)  in usb4_switch_check_wakes()
203 			pm_wakeup_event(&usb4->dev, 0);  in usb4_switch_check_wakes()
209 		pm_wakeup_event(&sw->dev, 0);  in usb4_switch_check_wakes()
216 	if (!port->cap_usb4)  in link_is_usb4()
220 			 port->cap_usb4 + PORT_CS_18, 1))  in link_is_usb4()
227  * usb4_switch_setup() - Additional setup for USB4 device
256 	sw->link_usb4 = link_is_usb4(down);  in usb4_switch_setup()
257 	tb_sw_dbg(sw, "link: %s\n", sw->link_usb4 ? "USB4" : "TBT");  in usb4_switch_setup()
269 	if (tb_acpi_may_tunnel_usb3() && sw->link_usb4 &&  in usb4_switch_setup()
298  * usb4_switch_configuration_valid() - Set tunneling configuration to be valid
306  * Returns %0 in success and negative errno otherwise.
331  * usb4_switch_read_uid() - Read UID from USB4 router
335  * Reads 64-bit UID from USB4 router config space.
360 	return status ? -EIO : 0;  in usb4_switch_drom_read_block()
364  * usb4_switch_drom_read() - Read arbitrary bytes from USB4 router DROM
371  * should always work but for hosts it may return %-EOPNOTSUPP in which
382  * usb4_switch_lane_bonding_possible() - Are conditions met for lane bonding
395 	ret = tb_port_read(up, &val, TB_CFG_PORT, up->cap_usb4 + PORT_CS_18, 1);  in usb4_switch_lane_bonding_possible()
403  * usb4_switch_set_wake() - Enabled/disable wake
427 		if (!port->cap_usb4)  in usb4_switch_set_wake()
431 				   port->cap_usb4 + PORT_CS_19, 1);  in usb4_switch_set_wake()
441 			usb4 = port->usb4;  in usb4_switch_set_wake()
444 			      device_may_wakeup(&usb4->dev)) && !configured)  in usb4_switch_set_wake()
447 			      device_may_wakeup(&usb4->dev)) && configured)  in usb4_switch_set_wake()
454 				    port->cap_usb4 + PORT_CS_19, 1);  in usb4_switch_set_wake()
485  * usb4_switch_set_sleep() - Prepare the router to enter sleep
512  * usb4_switch_nvm_sector_size() - Return router NVM sector size
517  * %-EOPNOTSUPP.
531 		return status == 0x2 ? -EOPNOTSUPP : -EIO;  in usb4_switch_nvm_sector_size()
554 	return status ? -EIO : 0;  in usb4_switch_nvm_read_block()
558  * usb4_switch_nvm_read() - Read arbitrary bytes from router NVM
565  * %-EOPNOTSUPP.
575  * usb4_switch_nvm_set_offset() - Set NVM write offset
582  * Returns %0 in success and negative errno if there was a failure.
599 	return status ? -EIO : 0;  in usb4_switch_nvm_set_offset()
614 	return status ? -EIO : 0;  in usb4_switch_nvm_write_next_block()
618  * usb4_switch_nvm_write() - Write to the router NVM
625  * write is not supported returns %-EOPNOTSUPP.
641  * usb4_switch_nvm_authenticate() - Authenticate new NVM
647  * running. In case of failure returns negative errno.
663 	case -EACCES:  in usb4_switch_nvm_authenticate()
664 	case -ENOTCONN:  in usb4_switch_nvm_authenticate()
665 	case -ETIMEDOUT:  in usb4_switch_nvm_authenticate()
674  * usb4_switch_nvm_authenticate_status() - Read status of last NVM authenticate
680  * and the status code is placed in @status. Returns negative errno in case
687 	const struct tb_cm_ops *cm_ops = sw->tb->cm_ops;  in usb4_switch_nvm_authenticate_status()
692 	if (cm_ops->usb4_switch_nvm_authenticate_status) {  in usb4_switch_nvm_authenticate_status()
693 		ret = cm_ops->usb4_switch_nvm_authenticate_status(sw, status);  in usb4_switch_nvm_authenticate_status()
694 		if (ret != -EOPNOTSUPP)  in usb4_switch_nvm_authenticate_status()
706 			return -EBUSY;  in usb4_switch_nvm_authenticate_status()
708 			return -EOPNOTSUPP;  in usb4_switch_nvm_authenticate_status()
720  * usb4_switch_credits_init() - Read buffer allocation parameters
724  * allocation fields accordingly. Specifically @sw->credits_allocation
727  * Returns %0 on success and negative errno otherwise.
744 		return -EIO;  in usb4_switch_credits_init()
748 		return -EMSGSIZE;  in usb4_switch_credits_init()
750 	max_usb3 = -1;  in usb4_switch_credits_init()
751 	min_dp_aux = -1;  in usb4_switch_credits_init()
752 	min_dp_main = -1;  in usb4_switch_credits_init()
753 	max_pcie = -1;  in usb4_switch_credits_init()
754 	max_dma = -1;  in usb4_switch_credits_init()
794 	 * issues, log a warning and fall back using the hard-coded  in usb4_switch_credits_init()
842 	sw->credit_allocation = true;  in usb4_switch_credits_init()
844 		sw->max_usb3_credits = max_usb3;  in usb4_switch_credits_init()
846 		sw->min_dp_aux_credits = min_dp_aux;  in usb4_switch_credits_init()
848 		sw->min_dp_main_credits = min_dp_main;  in usb4_switch_credits_init()
850 		sw->max_pcie_credits = max_pcie;  in usb4_switch_credits_init()
852 		sw->max_dma_credits = max_dma;  in usb4_switch_credits_init()
857 	return -EINVAL;  in usb4_switch_credits_init()
861  * usb4_switch_query_dp_resource() - Query availability of DP IN resource
871 	u32 metadata = in->port;  in usb4_switch_query_dp_resource()
881 	if (ret == -EOPNOTSUPP)  in usb4_switch_query_dp_resource()
890  * usb4_switch_alloc_dp_resource() - Allocate DP IN resource
896  * returns negative errno, in particular %-EBUSY if the resource is
901 	u32 metadata = in->port;  in usb4_switch_alloc_dp_resource()
907 	if (ret == -EOPNOTSUPP)  in usb4_switch_alloc_dp_resource()
912 	return status ? -EBUSY : 0;  in usb4_switch_alloc_dp_resource()
916  * usb4_switch_dealloc_dp_resource() - Releases allocated DP IN resource
924 	u32 metadata = in->port;  in usb4_switch_dealloc_dp_resource()
930 	if (ret == -EOPNOTSUPP)  in usb4_switch_dealloc_dp_resource()
935 	return status ? -EIO : 0;  in usb4_switch_dealloc_dp_resource()
949 		if (!p->link_nr) {  in usb4_port_idx()
960  * usb4_switch_map_pcie_down() - Map USB4 port to a PCIe downstream adapter
991  * usb4_switch_map_usb3_down() - Map USB4 port to a USB3 downstream adapter
1022  * usb4_switch_add_ports() - Add USB4 ports for this router
1028  * Return %0 in case of success and negative errno in case of failure.
1042 		if (!port->cap_usb4)  in usb4_switch_add_ports()
1051 		port->usb4 = usb4;  in usb4_switch_add_ports()
1058  * usb4_switch_remove_ports() - Removes USB4 ports from this router
1068 		if (port->usb4) {  in usb4_switch_remove_ports()
1069 			usb4_port_device_remove(port->usb4);  in usb4_switch_remove_ports()
1070 			port->usb4 = NULL;  in usb4_switch_remove_ports()
1076  * usb4_port_unlock() - Unlock USB4 downstream port
1096  * usb4_port_hotplug_enable() - Enables hotplug for a port
1100  * to be used on lane, DP-IN, and DP-OUT adapters.
1116  * usb4_port_reset() - Issue downstream port reset
1126 	if (!port->cap_usb4)  in usb4_port_reset()
1127 		return -EINVAL;  in usb4_port_reset()
1130 			   port->cap_usb4 + PORT_CS_19, 1);  in usb4_port_reset()
1137 			    port->cap_usb4 + PORT_CS_19, 1);  in usb4_port_reset()
1144 			   port->cap_usb4 + PORT_CS_19, 1);  in usb4_port_reset()
1151 			     port->cap_usb4 + PORT_CS_19, 1);  in usb4_port_reset()
1159 	if (!port->cap_usb4)  in usb4_port_set_configured()
1160 		return -EINVAL;  in usb4_port_set_configured()
1163 			   port->cap_usb4 + PORT_CS_19, 1);  in usb4_port_set_configured()
1173 			     port->cap_usb4 + PORT_CS_19, 1);  in usb4_port_set_configured()
1177  * usb4_port_configure() - Set USB4 port configured
1188  * usb4_port_unconfigure() - Set USB4 port unconfigured
1203 	if (!port->cap_usb4)  in usb4_set_xdomain_configured()
1204 		return -EINVAL;  in usb4_set_xdomain_configured()
1207 			   port->cap_usb4 + PORT_CS_19, 1);  in usb4_set_xdomain_configured()
1217 			     port->cap_usb4 + PORT_CS_19, 1);  in usb4_set_xdomain_configured()
1221  * usb4_port_configure_xdomain() - Configure port for XDomain
1226  * the link type. Returns %0 in success and negative errno in failure.
1230 	xd->link_usb4 = link_is_usb4(port);  in usb4_port_configure_xdomain()
1235  * usb4_port_unconfigure_xdomain() - Unconfigure port for XDomain
1264 	return -ETIMEDOUT;  in usb4_port_wait_for_bit()
1270 		return -EINVAL;  in usb4_port_read_data()
1272 	return tb_port_read(port, data, TB_CFG_PORT, port->cap_usb4 + PORT_CS_2,  in usb4_port_read_data()
1280 		return -EINVAL;  in usb4_port_write_data()
1282 	return tb_port_write(port, data, TB_CFG_PORT, port->cap_usb4 + PORT_CS_2,  in usb4_port_write_data()
1287  * usb4_port_sb_read() - Read from sideband register
1296  * Returns %0 in case of success and negative errno in case of failure.
1305 	if (!port->cap_usb4)  in usb4_port_sb_read()
1306 		return -EINVAL;  in usb4_port_sb_read()
1316 			    port->cap_usb4 + PORT_CS_1, 1);  in usb4_port_sb_read()
1320 	ret = usb4_port_wait_for_bit(port, port->cap_usb4 + PORT_CS_1,  in usb4_port_sb_read()
1326 			    port->cap_usb4 + PORT_CS_1, 1);  in usb4_port_sb_read()
1331 		return -ENODEV;  in usb4_port_sb_read()
1333 		return -EIO;  in usb4_port_sb_read()
1339  * usb4_port_sb_write() - Write to sideband register
1348  * and negative errno in case of failure.
1357 	if (!port->cap_usb4)  in usb4_port_sb_write()
1358 		return -EINVAL;  in usb4_port_sb_write()
1375 			    port->cap_usb4 + PORT_CS_1, 1);  in usb4_port_sb_write()
1379 	ret = usb4_port_wait_for_bit(port, port->cap_usb4 + PORT_CS_1,  in usb4_port_sb_write()
1385 			    port->cap_usb4 + PORT_CS_1, 1);  in usb4_port_sb_write()
1390 		return -ENODEV;  in usb4_port_sb_write()
1392 		return -EIO;  in usb4_port_sb_write()
1403 		return -EAGAIN;  in usb4_port_sb_opcode_err_to_errno()
1405 		return -EOPNOTSUPP;  in usb4_port_sb_opcode_err_to_errno()
1407 		return -EIO;  in usb4_port_sb_opcode_err_to_errno()
1439 	return -ETIMEDOUT;  in usb4_port_sb_op()
1458  * usb4_port_router_offline() - Put the USB4 port to offline mode
1465  * Returns %0 in case of success and negative errno if there was an
1474  * usb4_port_router_online() - Put the USB4 port back to online
1485  * usb4_port_enumerate_retimers() - Send RT broadcast transaction
1490  * %0 in case of success and negative errno if there was an error.
1502  * usb4_port_clx_supported() - Check if CLx is supported by the link
1514 			   port->cap_usb4 + PORT_CS_18, 1);  in usb4_port_clx_supported()
1522  * usb4_port_asym_supported() - If the port supports asymmetric link
1532 	if (!port->cap_usb4)  in usb4_port_asym_supported()
1535 	if (tb_port_read(port, &val, TB_CFG_PORT, port->cap_usb4 + PORT_CS_18, 1))  in usb4_port_asym_supported()
1542  * usb4_port_asym_set_link_width() - Set link width to asymmetric or symmetric
1554 	if (!port->cap_phy)  in usb4_port_asym_set_link_width()
1555 		return -EINVAL;  in usb4_port_asym_set_link_width()
1558 			   port->cap_phy + LANE_ADP_CS_1, 1);  in usb4_port_asym_set_link_width()
1577 		return -EINVAL;  in usb4_port_asym_set_link_width()
1581 			     port->cap_phy + LANE_ADP_CS_1, 1);  in usb4_port_asym_set_link_width()
1585  * usb4_port_asym_start() - Start symmetry change and wait for completion
1592  * Returns %0 in case of success, %-ETIMEDOUT if case of timeout or
1593  * a negative errno in case of a failure.
1601 			   port->cap_usb4 + PORT_CS_19, 1);  in usb4_port_asym_start()
1609 			    port->cap_usb4 + PORT_CS_19, 1);  in usb4_port_asym_start()
1617 	ret = usb4_port_wait_for_bit(port, port->cap_usb4 + PORT_CS_19,  in usb4_port_asym_start()
1624 	return usb4_port_wait_for_bit(port, port->cap_usb4 + PORT_CS_18,  in usb4_port_asym_start()
1629  * usb4_port_margining_caps() - Read USB4 port marginig capabilities
1653  * usb4_port_hw_margin() - Run hardware lane margining on port
1672 		return -EINVAL;  in usb4_port_hw_margin()
1674 	val = params->lanes;  in usb4_port_hw_margin()
1675 	if (params->time)  in usb4_port_hw_margin()
1677 	if (params->right_high || params->upper_eye)  in usb4_port_hw_margin()
1679 	if (params->ber_level)  in usb4_port_hw_margin()
1680 		val |= FIELD_PREP(USB4_MARGIN_HW_BER_MASK, params->ber_level);  in usb4_port_hw_margin()
1681 	if (params->optional_voltage_offset_range)  in usb4_port_hw_margin()
1699  * usb4_port_sw_margin() - Run software lane margining on port
1708  * success and negative errno otherwise.
1718 		return -EINVAL;  in usb4_port_sw_margin()
1720 	val = params->lanes;  in usb4_port_sw_margin()
1721 	if (params->time)  in usb4_port_sw_margin()
1723 	if (params->optional_voltage_offset_range)  in usb4_port_sw_margin()
1725 	if (params->right_high)  in usb4_port_sw_margin()
1727 	if (params->upper_eye)  in usb4_port_sw_margin()
1729 	val |= FIELD_PREP(USB4_MARGIN_SW_COUNTER_MASK, params->error_counter);  in usb4_port_sw_margin()
1730 	val |= FIELD_PREP(USB4_MARGIN_SW_VT_MASK, params->voltage_time_offset);  in usb4_port_sw_margin()
1748  * usb4_port_sw_margin_errors() - Read the software margining error counters
1755  * Returns %0 in success and negative errno otherwise.
1780  * usb4_port_retimer_set_inbound_sbtx() - Enable sideband channel transactions
1794 	if (ret != -ENODEV)  in usb4_port_retimer_set_inbound_sbtx()
1807  * usb4_port_retimer_unset_inbound_sbtx() - Disable sideband channel transactions
1821  * usb4_port_retimer_is_last() - Is the retimer last on-board retimer
1826  * Type-C port) this function returns %1. If it is not returns %0. If
1827  * the retimer is not present returns %-ENODEV. Otherwise returns
1828  * negative errno.
1846  * usb4_port_retimer_is_cable() - Is the retimer cable retimer
1851  * %1 and %0 if it is on-board retimer. In case a retimer is not present
1852  * at @index returns %-ENODEV. Otherwise returns negative errno.
1870  * usb4_port_retimer_nvm_sector_size() - Read retimer NVM sector size
1876  * upgrade for example. Returns sector size in bytes or negative errno
1877  * in case of error. Specifically returns %-ENODEV if there is no
1896  * usb4_port_retimer_nvm_set_offset() - Set NVM write offset
1904  * Returns %0 in success and negative errno if there was a failure.
1935 	struct tb_port *port = info->port;  in usb4_port_retimer_nvm_write_next_block()
1936 	u8 index = info->index;  in usb4_port_retimer_nvm_write_next_block()
1949  * usb4_port_retimer_nvm_write() - Write to retimer NVM
1957  * upgrade. Returns %0 if the data was written successfully and negative
1958  * errno in case of failure. Specifically returns %-ENODEV if there is
1976  * usb4_port_retimer_nvm_authenticate() - Start retimer NVM upgrade
2001  * usb4_port_retimer_nvm_authenticate_status() - Read status of NVM upgrade
2011  * reading the status fails, returns negative errno.
2030 	case -EAGAIN:  in usb4_port_retimer_nvm_authenticate_status()
2049 	struct tb_port *port = info->port;  in usb4_port_retimer_nvm_read_block()
2050 	u8 index = info->index;  in usb4_port_retimer_nvm_read_block()
2072  * usb4_port_retimer_nvm_read() - Read contents of retimer NVM
2080  * read was successful and negative errno in case of failure.
2081  * Specifically returns %-ENODEV if there is no retimer at @index.
2096 	if (port->max_bw)  in usb4_usb3_port_max_bandwidth()
2097 		return min(bw, port->max_bw);  in usb4_usb3_port_max_bandwidth()
2102  * usb4_usb3_port_max_link_rate() - Maximum support USB3 link rate
2106  * Negative errno in case of error.
2114 		return -EINVAL;  in usb4_usb3_port_max_link_rate()
2117 			   port->cap_adap + ADP_USB3_CS_4, 1);  in usb4_usb3_port_max_link_rate()
2133 		return -EINVAL;  in usb4_usb3_port_cm_request()
2134 	if (tb_route(port->sw))  in usb4_usb3_port_cm_request()
2135 		return -EINVAL;  in usb4_usb3_port_cm_request()
2138 			   port->cap_adap + ADP_USB3_CS_2, 1);  in usb4_usb3_port_cm_request()
2148 			    port->cap_adap + ADP_USB3_CS_2, 1);  in usb4_usb3_port_cm_request()
2157 	return usb4_port_wait_for_bit(port, port->cap_adap + ADP_USB3_CS_1,  in usb4_usb3_port_cm_request()
2184 	/* 1 uframe is 1/8 ms (125 us) -> 1 / 8000 s */  in mbps_to_usb3_bw()
2197 			   port->cap_adap + ADP_USB3_CS_2, 1);  in usb4_usb3_port_read_allocated_bandwidth()
2202 			   port->cap_adap + ADP_USB3_CS_3, 1);  in usb4_usb3_port_read_allocated_bandwidth()
2218  * usb4_usb3_port_allocated_bandwidth() - Bandwidth allocated for USB3
2224  * @downstream_bw in Mb/s. Returns %0 in case of success and negative
2251 			   port->cap_adap + ADP_USB3_CS_1, 1);  in usb4_usb3_port_read_consumed_bandwidth()
2256 			   port->cap_adap + ADP_USB3_CS_3, 1);  in usb4_usb3_port_read_consumed_bandwidth()
2288 		return -EINVAL;  in usb4_usb3_port_write_allocated_bandwidth()
2291 			    port->cap_adap + ADP_USB3_CS_3, 1);  in usb4_usb3_port_write_allocated_bandwidth()
2301 			   port->cap_adap + ADP_USB3_CS_2, 1);  in usb4_usb3_port_write_allocated_bandwidth()
2310 			     port->cap_adap + ADP_USB3_CS_2, 1);  in usb4_usb3_port_write_allocated_bandwidth()
2314  * usb4_usb3_port_allocate_bandwidth() - Allocate bandwidth for USB3
2327  * Returns %0 in case of success and negative errno if there was a
2362  * usb4_usb3_port_release_bandwidth() - Release allocated USB3 bandwidth
2370  * Returns 0% in success and negative errno in case of failure.
2412 	if (!tb_switch_is_usb4(port->sw))  in is_usb4_dpin()
2418  * usb4_dp_port_set_cm_id() - Assign CM ID to the DP IN adapter
2422  * Sets CM ID for the @port. Returns %0 on success and negative errno
2423  * otherwise. Speficially returns %-EOPNOTSUPP if the @port does not
2432 		return -EOPNOTSUPP;  in usb4_dp_port_set_cm_id()
2435 			   port->cap_adap + ADP_DP_CS_2, 1);  in usb4_dp_port_set_cm_id()
2443 			     port->cap_adap + ADP_DP_CS_2, 1);  in usb4_dp_port_set_cm_id()
2447  * usb4_dp_port_bandwidth_mode_supported() - Is the bandwidth allocation mode
2463 			   port->cap_adap + DP_LOCAL_CAP, 1);  in usb4_dp_port_bandwidth_mode_supported()
2471  * usb4_dp_port_bandwidth_mode_enabled() - Is the bandwidth allocation mode
2487 			   port->cap_adap + ADP_DP_CS_8, 1);  in usb4_dp_port_bandwidth_mode_enabled()
2495  * usb4_dp_port_set_cm_bandwidth_mode_supported() - Set/clear CM support for
2501  * of the DP IN adapter. Returns %0 in success and negative errno
2502  * otherwise. Specifically returns %-OPNOTSUPP if the passed in adapter
2512 		return -EOPNOTSUPP;  in usb4_dp_port_set_cm_bandwidth_mode_supported()
2515 			   port->cap_adap + ADP_DP_CS_2, 1);  in usb4_dp_port_set_cm_bandwidth_mode_supported()
2525 			     port->cap_adap + ADP_DP_CS_2, 1);  in usb4_dp_port_set_cm_bandwidth_mode_supported()
2529  * usb4_dp_port_group_id() - Return Group ID assigned for the adapter
2534  * %-EOPNOTSUPP is returned.
2542 		return -EOPNOTSUPP;  in usb4_dp_port_group_id()
2545 			   port->cap_adap + ADP_DP_CS_2, 1);  in usb4_dp_port_group_id()
2553  * usb4_dp_port_set_group_id() - Set adapter Group ID
2558  * Returns %0 in case of success and negative errno otherwise.
2559  * Specifically returns %-EOPNOTSUPP if the adapter does not support
2568 		return -EOPNOTSUPP;  in usb4_dp_port_set_group_id()
2571 			   port->cap_adap + ADP_DP_CS_2, 1);  in usb4_dp_port_set_group_id()
2579 			     port->cap_adap + ADP_DP_CS_2, 1);  in usb4_dp_port_set_group_id()
2583  * usb4_dp_port_nrd() - Read non-reduced rate and lanes
2585  * @rate: Non-reduced rate in Mb/s is placed here
2586  * @lanes: Non-reduced lanes are placed here
2588  * Reads the non-reduced rate and lanes from the DP IN adapter. Returns
2589  * %0 in success and negative errno otherwise. Specifically returns
2590  * %-EOPNOTSUPP if the adapter does not support this.
2598 		return -EOPNOTSUPP;  in usb4_dp_port_nrd()
2601 			   port->cap_adap + ADP_DP_CS_2, 1);  in usb4_dp_port_nrd()
2638  * usb4_dp_port_set_nrd() - Set non-reduced rate and lanes
2640  * @rate: Non-reduced rate in Mb/s
2641  * @lanes: Non-reduced lanes
2644  * the non-reduced values for the DP IN adapter. Returns %0 in success
2645  * and negative errno otherwise. If the adapter does not support this
2646  * %-EOPNOTSUPP is returned.
2654 		return -EOPNOTSUPP;  in usb4_dp_port_set_nrd()
2657 			   port->cap_adap + ADP_DP_CS_2, 1);  in usb4_dp_port_set_nrd()
2679 		return -EINVAL;  in usb4_dp_port_set_nrd()
2694 		return -EINVAL;  in usb4_dp_port_set_nrd()
2698 			     port->cap_adap + ADP_DP_CS_2, 1);  in usb4_dp_port_set_nrd()
2702  * usb4_dp_port_granularity() - Return granularity for the bandwidth values
2706  * not support bandwidth allocation mode returns %-EOPNOTSUPP and negative
2715 		return -EOPNOTSUPP;  in usb4_dp_port_granularity()
2718 			   port->cap_adap + ADP_DP_CS_2, 1);  in usb4_dp_port_granularity()
2734 	return -EINVAL;  in usb4_dp_port_granularity()
2738  * usb4_dp_port_set_granularity() - Set granularity for the bandwidth values
2743  * bandwidth. Returns %0 in success and negative errno otherwise. If the
2744  * adapter does not support this %-EOPNOTSUPP is returned.
2752 		return -EOPNOTSUPP;  in usb4_dp_port_set_granularity()
2755 			   port->cap_adap + ADP_DP_CS_2, 1);  in usb4_dp_port_set_granularity()
2772 		return -EINVAL;  in usb4_dp_port_set_granularity()
2776 			     port->cap_adap + ADP_DP_CS_2, 1);  in usb4_dp_port_set_granularity()
2780  * usb4_dp_port_set_estimated_bandwidth() - Set estimated bandwidth
2787  * and negative errno otherwise. Specifically returns %-EOPNOTSUPP if
2796 		return -EOPNOTSUPP;  in usb4_dp_port_set_estimated_bandwidth()
2804 			   port->cap_adap + ADP_DP_CS_2, 1);  in usb4_dp_port_set_estimated_bandwidth()
2812 			     port->cap_adap + ADP_DP_CS_2, 1);  in usb4_dp_port_set_estimated_bandwidth()
2816  * usb4_dp_port_allocated_bandwidth() - Return allocated bandwidth
2820  * account the programmed granularity). Returns negative errno in case
2829 		return -EOPNOTSUPP;  in usb4_dp_port_allocated_bandwidth()
2837 			   port->cap_adap + DP_STATUS, 1);  in usb4_dp_port_allocated_bandwidth()
2853 			   port->cap_adap + ADP_DP_CS_2, 1);  in __usb4_dp_port_set_cm_ack()
2863 			     port->cap_adap + ADP_DP_CS_2, 1);  in __usb4_dp_port_set_cm_ack()
2885 				   port->cap_adap + ADP_DP_CS_8, 1);  in usb4_dp_port_wait_and_clear_cm_ack()
2897 		return -ETIMEDOUT;  in usb4_dp_port_wait_and_clear_cm_ack()
2901 			   port->cap_adap + ADP_DP_CS_2, 1);  in usb4_dp_port_wait_and_clear_cm_ack()
2907 			     port->cap_adap + ADP_DP_CS_2, 1);  in usb4_dp_port_wait_and_clear_cm_ack()
2911  * usb4_dp_port_allocate_bandwidth() - Set allocated bandwidth
2917  * success and negative errno in case of error.
2925 		return -EOPNOTSUPP;  in usb4_dp_port_allocate_bandwidth()
2933 			   port->cap_adap + DP_STATUS, 1);  in usb4_dp_port_allocate_bandwidth()
2941 			    port->cap_adap + DP_STATUS, 1);  in usb4_dp_port_allocate_bandwidth()
2953  * usb4_dp_port_requested_bandwidth() - Read requested bandwidth
2958  * error returns negative errno. Specifically returns %-EOPNOTSUPP if
2968 		return -EOPNOTSUPP;  in usb4_dp_port_requested_bandwidth()
2976 			   port->cap_adap + ADP_DP_CS_8, 1);  in usb4_dp_port_requested_bandwidth()
2981 		return -ENODATA;  in usb4_dp_port_requested_bandwidth()
2987  * usb4_pci_port_set_ext_encapsulation() - Enable/disable extended encapsulation
2993  * success and negative errno otherwise.
3001 		return -EINVAL;  in usb4_pci_port_set_ext_encapsulation()
3004 			   port->cap_adap + ADP_PCIE_CS_1, 1);  in usb4_pci_port_set_ext_encapsulation()
3014 			     port->cap_adap + ADP_PCIE_CS_1, 1);  in usb4_pci_port_set_ext_encapsulation()