1 /* SPDX-License-Identifier: GPL-2.0 */
3  * usb hub driver head file
29 		struct usb_hub_status	hub;  member
49 #if USB_MAXCHILDREN > 31 /* 8*sizeof(unsigned long) - 1 */
81  * struct usb port - kernel's representation of a usb port
85  * @peer: related usb2 and usb3 ports (share the same connector)
86  * @connector: USB Type-C connector
94  * @is_superspeed cache super-speed status
104 	struct usb_port *peer;  member
125 extern int usb_hub_create_port_device(struct usb_hub *hub,
127 extern void usb_hub_remove_port_device(struct usb_hub *hub,
129 extern int usb_hub_set_port_power(struct usb_device *hdev, struct usb_hub *hub,
132 extern void hub_get(struct usb_hub *hub);
133 extern void hub_put(struct usb_hub *hub);
134 extern int hub_port_debounce(struct usb_hub *hub, int port1,
138 extern int usb_hub_port_status(struct usb_hub *hub, int port1,
140 extern int usb_port_is_power_on(struct usb_hub *hub, unsigned int portstatus);
142 static inline bool hub_is_port_power_switchable(struct usb_hub *hub)  in hub_is_port_power_switchable()  argument
146 	if (!hub)  in hub_is_port_power_switchable()
148 	hcs = hub->descriptor->wHubCharacteristics;  in hub_is_port_power_switchable()
154 	return hdev->descriptor.bDeviceProtocol == USB_HUB_PR_SS;  in hub_is_superspeed()
159 	return (hdev->descriptor.bDeviceProtocol == USB_HUB_PR_SS &&  in hub_is_superspeedplus()
160 		le16_to_cpu(hdev->descriptor.bcdUSB) >= 0x0310 &&  in hub_is_superspeedplus()
161 		hdev->bos && hdev->bos->ssp_cap);  in hub_is_superspeedplus()
164 static inline unsigned hub_power_on_good_delay(struct usb_hub *hub)  in hub_power_on_good_delay()  argument
166 	unsigned delay = hub->descriptor->bPwrOn2PwrGood * 2;  in hub_power_on_good_delay()
168 	if (!hub->hdev->parent)	/* root hub */  in hub_power_on_good_delay()
174 static inline int hub_port_debounce_be_connected(struct usb_hub *hub,  in hub_port_debounce_be_connected()  argument
177 	return hub_port_debounce(hub, port1, true);  in hub_port_debounce_be_connected()
180 static inline int hub_port_debounce_be_stable(struct usb_hub *hub,  in hub_port_debounce_be_stable()  argument
183 	return hub_port_debounce(hub, port1, false);  in hub_port_debounce_be_stable()