1 // SPDX-License-Identifier: GPL-2.0
8  * (C) Copyright 1999-2002 Johannes Erdfelt, johannes@erdfelt.com
19 	USB_DT_HUB,		/*  __u8  bDescriptorType; Hub-descriptor */
22 		HUB_CHAR_INDV_PORT_OCPM, /* (per-port OC, no power switching) */
41 /* A port that either is connected or has a changed-bit set will prevent
48 	for (port = 0; port < uhci->rh_numports; ++port) {  in any_ports_active()
51 				test_bit(port, &uhci->port_c_suspend))  in any_ports_active()
62 	/* Some boards (both VIA and Intel apparently) report bogus  in get_hub_status_data()
72 	for (port = 0; port < uhci->rh_numports; ++port) {  in get_hub_status_data()
74 				test_bit(port, &uhci->port_c_suspend))  in get_hub_status_data()
104 		if (test_bit(port, &uhci->resuming_ports))  in uhci_finish_suspend()
105 			set_bit(port, &uhci->port_c_suspend);  in uhci_finish_suspend()
108 		 * it has had a chance to send a low-speed EOP sequence,  in uhci_finish_suspend()
118 	clear_bit(port, &uhci->resuming_ports);  in uhci_finish_suspend()
119 	usb_hcd_end_port_resume(&uhci_to_hcd(uhci)->self, port);  in uhci_finish_suspend()
143 	for (port = 0; port < uhci->rh_numports; ++port) {  in uhci_check_ports()
147 			if (time_after_eq(jiffies, uhci->ports_timeout)) {  in uhci_check_ports()
153 				if (uhci->wait_for_hp)  in uhci_check_ports()
165 			if (!test_bit(port, &uhci->resuming_ports)) {  in uhci_check_ports()
168 				set_bit(port, &uhci->resuming_ports);  in uhci_check_ports()
169 				uhci->ports_timeout = jiffies +  in uhci_check_ports()
172 						&uhci_to_hcd(uhci)->self, port);  in uhci_check_ports()
176 				mod_timer(&uhci_to_hcd(uhci)->rh_timer,  in uhci_check_ports()
177 						uhci->ports_timeout);  in uhci_check_ports()
179 						uhci->ports_timeout)) {  in uhci_check_ports()
192 	spin_lock_irqsave(&uhci->lock, flags);  in uhci_hub_status_data()
195 	if (!HCD_HW_ACCESSIBLE(hcd) || uhci->dead)  in uhci_hub_status_data()
201 	switch (uhci->rh_state) {  in uhci_hub_status_data()
204 		if (status || uhci->resuming_ports) {  in uhci_hub_status_data()
219 			uhci->rh_state = UHCI_RH_RUNNING_NODEVS;  in uhci_hub_status_data()
220 			uhci->auto_stop_time = jiffies + HZ;  in uhci_hub_status_data()
225 		/* auto-stop if nothing connected for 1 second */  in uhci_hub_status_data()
227 			uhci->rh_state = UHCI_RH_RUNNING;  in uhci_hub_status_data()
228 		else if (time_after_eq(jiffies, uhci->auto_stop_time) &&  in uhci_hub_status_data()
229 				!uhci->wait_for_hp)  in uhci_hub_status_data()
238 	spin_unlock_irqrestore(&uhci->lock, flags);  in uhci_hub_status_data()
248 	unsigned int port = wIndex - 1;  in uhci_hub_control()
253 	if (!HCD_HW_ACCESSIBLE(hcd) || uhci->dead)  in uhci_hub_control()
254 		return -ETIMEDOUT;  in uhci_hub_control()
256 	spin_lock_irqsave(&uhci->lock, flags);  in uhci_hub_control()
264 		if (port >= uhci->rh_numports)  in uhci_hub_control()
270 		/* Intel controllers report the OverCurrent bit active on.  in uhci_hub_control()
271 		 * VIA controllers report it active off, so we'll adjust the  in uhci_hub_control()
274 		if (uhci->oc_low)  in uhci_hub_control()
286 		if (test_bit(port, &uhci->port_c_suspend)) {  in uhci_hub_control()
290 		if (test_bit(port, &uhci->resuming_ports))  in uhci_hub_control()
328 		if (port >= uhci->rh_numports)  in uhci_hub_control()
342 			uhci->ports_timeout = jiffies +  in uhci_hub_control()
353 		if (port >= uhci->rh_numports)  in uhci_hub_control()
372 						&uhci->resuming_ports)) {  in uhci_hub_control()
385 					uhci->ports_timeout = jiffies +  in uhci_hub_control()
390 			clear_bit(port, &uhci->port_c_suspend);  in uhci_hub_control()
402 			/* this driver won't report these */  in uhci_hub_control()
412 			buf[2] = uhci->rh_numports;  in uhci_hub_control()
416 		retval = -EPIPE;  in uhci_hub_control()
418 	spin_unlock_irqrestore(&uhci->lock, flags);  in uhci_hub_control()