44 static int any_ports_active(struct uhci_hcd *uhci)  in any_ports_active()  argument
48 	for (port = 0; port < uhci->rh_numports; ++port) {  in any_ports_active()
49 		if ((uhci_readw(uhci, USBPORTSC1 + port * 2) &  in any_ports_active()
51 				test_bit(port, &uhci->port_c_suspend))  in any_ports_active()
57 static inline int get_hub_status_data(struct uhci_hcd *uhci, char *buf)  in get_hub_status_data()  argument
72 	for (port = 0; port < uhci->rh_numports; ++port) {  in get_hub_status_data()
73 		if ((uhci_readw(uhci, USBPORTSC1 + port * 2) & mask) ||  in get_hub_status_data()
74 				test_bit(port, &uhci->port_c_suspend))  in get_hub_status_data()
81 	status = uhci_readw(uhci, port_addr);	\
85 	uhci_writew(uhci, status, port_addr)
88 	status = uhci_readw(uhci, port_addr);	\
91 	uhci_writew(uhci, status, port_addr)
96 static void uhci_finish_suspend(struct uhci_hcd *uhci, int port,  in uhci_finish_suspend()  argument
102 	if (uhci_readw(uhci, port_addr) & SUSPEND_BITS) {  in uhci_finish_suspend()
104 		if (test_bit(port, &uhci->resuming_ports))  in uhci_finish_suspend()
105 			set_bit(port, &uhci->port_c_suspend);  in uhci_finish_suspend()
113 			if (!(uhci_readw(uhci, port_addr) & SUSPEND_BITS))  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()
125 static void wait_for_HP(struct uhci_hcd *uhci, unsigned long port_addr)  in wait_for_HP()  argument
130 		if (uhci_readw(uhci, port_addr) & USBPORTSC_CSC)  in wait_for_HP()
137 static void uhci_check_ports(struct uhci_hcd *uhci)  in uhci_check_ports()  argument
143 	for (port = 0; port < uhci->rh_numports; ++port) {  in uhci_check_ports()
145 		status = uhci_readw(uhci, port_addr);  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()
154 					wait_for_HP(uhci, port_addr);  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()
180 				uhci_finish_suspend(uhci, port, port_addr);  in uhci_check_ports()
188 	struct uhci_hcd *uhci = hcd_to_uhci(hcd);  in uhci_hub_status_data()  local
192 	spin_lock_irqsave(&uhci->lock, flags);  in uhci_hub_status_data()
194 	uhci_scan_schedule(uhci);  in uhci_hub_status_data()
195 	if (!HCD_HW_ACCESSIBLE(hcd) || uhci->dead)  in uhci_hub_status_data()
197 	uhci_check_ports(uhci);  in uhci_hub_status_data()
199 	status = get_hub_status_data(uhci, buf);  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()
213 			wakeup_rh(uhci);  in uhci_hub_status_data()
218 		if (!any_ports_active(uhci)) {  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()
226 		if (any_ports_active(uhci))  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()
230 			suspend_rh(uhci, UHCI_RH_AUTO_STOPPED);  in uhci_hub_status_data()
238 	spin_unlock_irqrestore(&uhci->lock, flags);  in uhci_hub_status_data()
246 	struct uhci_hcd *uhci = hcd_to_uhci(hcd);  in uhci_hub_control()  local
253 	if (!HCD_HW_ACCESSIBLE(hcd) || uhci->dead)  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()
267 		uhci_check_ports(uhci);  in uhci_hub_control()
268 		status = uhci_readw(uhci, port_addr);  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()
310 			dev_dbg(uhci_dev(uhci), "port %d portsc %04x,%02x\n",  in uhci_hub_control()
328 		if (port >= uhci->rh_numports)  in uhci_hub_control()
339 			uhci_finish_suspend(uhci, port, port_addr);  in uhci_hub_control()
342 			uhci->ports_timeout = jiffies +  in uhci_hub_control()
353 		if (port >= uhci->rh_numports)  in uhci_hub_control()
361 			uhci_finish_suspend(uhci, port, port_addr);  in uhci_hub_control()
367 			if (!(uhci_readw(uhci, port_addr) & USBPORTSC_SUSP)) {  in uhci_hub_control()
370 				uhci_finish_suspend(uhci, port, port_addr);  in uhci_hub_control()
372 						&uhci->resuming_ports)) {  in uhci_hub_control()
379 				if (!(uhci_readw(uhci, port_addr) &  in uhci_hub_control()
381 					uhci_finish_suspend(uhci, port,  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()
412 			buf[2] = uhci->rh_numports;  in uhci_hub_control()
418 	spin_unlock_irqrestore(&uhci->lock, flags);  in uhci_hub_control()