1 // SPDX-License-Identifier: GPL-2.0
7  * compiled-in as well.  Otherwise, if either of the two stacks is
29  * usb_ep_type_string() - Returns human readable-name of the endpoint type.
30  * @ep_type: The endpoint type to return human-readable name for.  If it's not
70 	[USB_SPEED_LOW] = "low-speed",
71 	[USB_SPEED_FULL] = "full-speed",
72 	[USB_SPEED_HIGH] = "high-speed",
74 	[USB_SPEED_SUPER] = "super-speed",
75 	[USB_SPEED_SUPER_PLUS] = "super-speed-plus",
80 	[USB_SSP_GEN_2x1] = "super-speed-plus-gen2x1",
81 	[USB_SSP_GEN_1x2] = "super-speed-plus-gen1x2",
82 	[USB_SSP_GEN_2x2] = "super-speed-plus-gen2x2",
86  * usb_speed_string() - Returns human readable-name of the speed.
87  * @speed: The speed to return human-readable name for.  If it's not
91 const char *usb_speed_string(enum usb_device_speed speed)  in usb_speed_string()  argument
93 	if (speed < 0 || speed >= ARRAY_SIZE(speed_names))  in usb_speed_string()
94 		speed = USB_SPEED_UNKNOWN;  in usb_speed_string()
95 	return speed_names[speed];  in usb_speed_string()
100  * usb_get_maximum_speed - Get maximum requested speed for a given USB
104  * The function gets the maximum speed string from property "maximum-speed",
112 	ret = device_property_read_string(dev, "maximum-speed", &maximum_speed);  in usb_get_maximum_speed()
126  * usb_get_maximum_ssp_rate - Get the signaling rate generation and lane count
130  * If the string from "maximum-speed" property is super-speed-plus-genXxY where
139 	ret = device_property_read_string(dev, "maximum-speed", &maximum_speed);  in usb_get_maximum_ssp_rate()
149  * usb_state_string - Returns human readable name for the state.
150  * @state: The state to return a human-readable name for. If it's not
204  * usb_decode_interval - Decode bInterval into the time expressed in 1us unit
206  * @speed: The speed that the endpoint works as
212 				 enum usb_device_speed speed)  in usb_decode_interval()  argument
219 		if (speed == USB_SPEED_HIGH)  in usb_decode_interval()
220 			interval = epd->bInterval;  in usb_decode_interval()
223 		interval = 1 << (epd->bInterval - 1);  in usb_decode_interval()
227 		if (speed == USB_SPEED_HIGH && usb_endpoint_dir_out(epd))  in usb_decode_interval()
228 			interval = epd->bInterval;  in usb_decode_interval()
231 		if (speed >= USB_SPEED_HIGH)  in usb_decode_interval()
232 			interval = 1 << (epd->bInterval - 1);  in usb_decode_interval()
234 			interval = epd->bInterval;  in usb_decode_interval()
238 	interval *= (speed >= USB_SPEED_HIGH) ? 125 : 1000;  in usb_decode_interval()
246  * of_usb_get_dr_mode_by_phy - Get dual role mode for the controller device
249  * @arg0: phandle args[0] for phy's with #phy-cells >= 1, or -1 for
250  *        phys which do not have phy-cells
270 			if (arg0 == -1) {  in of_usb_get_dr_mode_by_phy()
276 							"phys", "#phy-cells",  in of_usb_get_dr_mode_by_phy()
302  * of_usb_host_tpl_support - to get if Targeted Peripheral List is supported
303  * for given targeted hosts (non-PC hosts)
310 	return of_property_read_bool(np, "tpl-support");  in of_usb_host_tpl_support()
315  * of_usb_update_otg_caps - to update usb otg capabilities according to
328 		return -EINVAL;  in of_usb_update_otg_caps()
330 	if (!of_property_read_u32(np, "otg-rev", &otg_rev)) {  in of_usb_update_otg_caps()
337 			if (otg_caps->otg_rev)  in of_usb_update_otg_caps()
338 				otg_caps->otg_rev = min_t(u16, otg_rev,  in of_usb_update_otg_caps()
339 							otg_caps->otg_rev);  in of_usb_update_otg_caps()
341 				otg_caps->otg_rev = otg_rev;  in of_usb_update_otg_caps()
344 			pr_err("%pOF: unsupported otg-rev: 0x%x\n",  in of_usb_update_otg_caps()
346 			return -EINVAL;  in of_usb_update_otg_caps()
350 		 * otg-rev is mandatory for otg properties, if not passed  in of_usb_update_otg_caps()
352 		 * Non-dt platform can set it afterwards.  in of_usb_update_otg_caps()
354 		otg_caps->otg_rev = 0;  in of_usb_update_otg_caps()
357 	if (of_property_read_bool(np, "hnp-disable"))  in of_usb_update_otg_caps()
358 		otg_caps->hnp_support = false;  in of_usb_update_otg_caps()
359 	if (of_property_read_bool(np, "srp-disable"))  in of_usb_update_otg_caps()
360 		otg_caps->srp_support = false;  in of_usb_update_otg_caps()
361 	if (of_property_read_bool(np, "adp-disable") ||  in of_usb_update_otg_caps()
362 				(otg_caps->otg_rev < 0x0200))  in of_usb_update_otg_caps()
363 		otg_caps->adp_support = false;  in of_usb_update_otg_caps()
370  * usb_of_get_companion_dev - Find the companion device
385 	node = of_parse_phandle(dev->of_node, "companion", 0);  in usb_of_get_companion_dev()
391 	return pdev ? &pdev->dev : NULL;  in usb_of_get_companion_dev()