1 // SPDX-License-Identifier: GPL-2.0
7  * compiled-in as well.  Otherwise, if either of the two stacks is
30  * usb_ep_type_string() - Returns human readable-name of the endpoint type.
31  * @ep_type: The endpoint type to return human-readable name for.  If it's not
45  * usb_otg_state_string() - returns human readable name of OTG state.
77 	[USB_SPEED_LOW] = "low-speed",
78 	[USB_SPEED_FULL] = "full-speed",
79 	[USB_SPEED_HIGH] = "high-speed",
81 	[USB_SPEED_SUPER] = "super-speed",
82 	[USB_SPEED_SUPER_PLUS] = "super-speed-plus",
87 	[USB_SSP_GEN_2x1] = "super-speed-plus-gen2x1",
88 	[USB_SSP_GEN_1x2] = "super-speed-plus-gen1x2",
89 	[USB_SSP_GEN_2x2] = "super-speed-plus-gen2x2",
93  * usb_speed_string() - Returns human readable-name of the speed.
94  * @speed: The speed to return human-readable name for.  If it's not
98 const char *usb_speed_string(enum usb_device_speed speed)  in usb_speed_string()  argument
100 	if (speed < 0 || speed >= ARRAY_SIZE(speed_names))  in usb_speed_string()
101 		speed = USB_SPEED_UNKNOWN;  in usb_speed_string()
102 	return speed_names[speed];  in usb_speed_string()
107  * usb_get_maximum_speed - Get maximum requested speed for a given USB
111  * The function gets the maximum speed string from property "maximum-speed",
116 	const char *p = "maximum-speed";  in usb_get_maximum_speed()
132  * usb_get_maximum_ssp_rate - Get the signaling rate generation and lane count
136  * If the string from "maximum-speed" property is super-speed-plus-genXxY where
145 	ret = device_property_read_string(dev, "maximum-speed", &maximum_speed);  in usb_get_maximum_ssp_rate()
155  * usb_state_string - Returns human readable name for the state.
156  * @state: The state to return a human-readable name for. If it's not
189  * usb_get_dr_mode_from_string() - Get dual role mode for given string
218  * usb_get_role_switch_default_mode - Get default mode for given device
221  * The function gets string from property 'role-switch-default-mode',
229 	ret = device_property_read_string(dev, "role-switch-default-mode", &str);  in usb_get_role_switch_default_mode()
238  * usb_decode_interval - Decode bInterval into the time expressed in 1us unit
240  * @speed: The speed that the endpoint works as
246 				 enum usb_device_speed speed)  in usb_decode_interval()  argument
253 		if (speed == USB_SPEED_HIGH)  in usb_decode_interval()
254 			interval = epd->bInterval;  in usb_decode_interval()
257 		interval = 1 << (epd->bInterval - 1);  in usb_decode_interval()
261 		if (speed == USB_SPEED_HIGH && usb_endpoint_dir_out(epd))  in usb_decode_interval()
262 			interval = epd->bInterval;  in usb_decode_interval()
265 		if (speed >= USB_SPEED_HIGH)  in usb_decode_interval()
266 			interval = 1 << (epd->bInterval - 1);  in usb_decode_interval()
268 			interval = epd->bInterval;  in usb_decode_interval()
272 	interval *= (speed >= USB_SPEED_HIGH) ? 125 : 1000;  in usb_decode_interval()
280  * of_usb_get_dr_mode_by_phy - Get dual role mode for the controller device
283  * @arg0: phandle args[0] for phy's with #phy-cells >= 1, or -1 for
284  *        phys which do not have phy-cells
303 			if (arg0 == -1) {  in of_usb_get_dr_mode_by_phy()
309 							"phys", "#phy-cells",  in of_usb_get_dr_mode_by_phy()
335  * of_usb_host_tpl_support - to get if Targeted Peripheral List is supported
336  * for given targeted hosts (non-PC hosts)
343 	return of_property_read_bool(np, "tpl-support");  in of_usb_host_tpl_support()
348  * of_usb_update_otg_caps - to update usb otg capabilities according to
361 		return -EINVAL;  in of_usb_update_otg_caps()
363 	if (!of_property_read_u32(np, "otg-rev", &otg_rev)) {  in of_usb_update_otg_caps()
370 			if (otg_caps->otg_rev)  in of_usb_update_otg_caps()
371 				otg_caps->otg_rev = min_t(u16, otg_rev,  in of_usb_update_otg_caps()
372 							otg_caps->otg_rev);  in of_usb_update_otg_caps()
374 				otg_caps->otg_rev = otg_rev;  in of_usb_update_otg_caps()
377 			pr_err("%pOF: unsupported otg-rev: 0x%x\n",  in of_usb_update_otg_caps()
379 			return -EINVAL;  in of_usb_update_otg_caps()
383 		 * otg-rev is mandatory for otg properties, if not passed  in of_usb_update_otg_caps()
385 		 * Non-dt platform can set it afterwards.  in of_usb_update_otg_caps()
387 		otg_caps->otg_rev = 0;  in of_usb_update_otg_caps()
390 	if (of_property_read_bool(np, "hnp-disable"))  in of_usb_update_otg_caps()
391 		otg_caps->hnp_support = false;  in of_usb_update_otg_caps()
392 	if (of_property_read_bool(np, "srp-disable"))  in of_usb_update_otg_caps()
393 		otg_caps->srp_support = false;  in of_usb_update_otg_caps()
394 	if (of_property_read_bool(np, "adp-disable") ||  in of_usb_update_otg_caps()
395 				(otg_caps->otg_rev < 0x0200))  in of_usb_update_otg_caps()
396 		otg_caps->adp_support = false;  in of_usb_update_otg_caps()
403  * usb_of_get_companion_dev - Find the companion device
418 	node = of_parse_phandle(dev->of_node, "companion", 0);  in usb_of_get_companion_dev()
424 	return pdev ? &pdev->dev : NULL;  in usb_of_get_companion_dev()