Lines Matching +full:powered +full:- +full:while +full:- +full:suspended
1 // SPDX-License-Identifier: GPL-2.0+
3 * at91_udc -- driver for at91-series USB peripheral controller
33 #include <linux/mfd/syscon/atmel-matrix.h>
39 * This controller is simple and PIO-only. It's used in many AT91-series
41 * at91sam926x (arm926ejs, with MMU), and several no-mmu versions.
76 EP_INFO("ep3-int",
91 __raw_readl((udc)->udp_baseaddr + (reg))
93 __raw_writel((val), (udc)->udp_baseaddr + (reg))
95 /*-------------------------------------------------------------------------*/
109 "control", "out-iso", "out-bulk", "out-int", in proc_ep_show()
110 "BOGUS", "in-iso", "in-bulk", "in-int"}; in proc_ep_show()
115 struct at91_udc *udc = ep->udc; in proc_ep_show()
117 spin_lock_irqsave(&udc->lock, flags); in proc_ep_show()
119 csr = __raw_readl(ep->creg); in proc_ep_show()
121 /* NOTE: not collecting per-endpoint irq statistics... */ in proc_ep_show()
125 ep->ep.name, ep->ep.maxpacket, in proc_ep_show()
126 ep->is_in ? "in" : "out", in proc_ep_show()
127 ep->is_iso ? " iso" : "", in proc_ep_show()
128 ep->is_pingpong in proc_ep_show()
129 ? (ep->fifo_bank ? "pong" : "ping") in proc_ep_show()
131 ep->stopped ? " stopped" : ""); in proc_ep_show()
151 if (list_empty (&ep->queue)) in proc_ep_show()
154 else list_for_each_entry (req, &ep->queue, queue) { in proc_ep_show()
155 unsigned length = req->req.actual; in proc_ep_show()
158 &req->req, length, in proc_ep_show()
159 req->req.length, req->req.buf); in proc_ep_show()
161 spin_unlock_irqrestore(&udc->lock, flags); in proc_ep_show()
185 struct at91_udc *udc = s->private; in proc_udc_show()
191 seq_printf(s, "vbus %s, pullup %s, %s powered%s, gadget %s\n\n", in proc_udc_show()
192 udc->vbus ? "present" : "off", in proc_udc_show()
193 udc->enabled in proc_udc_show()
194 ? (udc->vbus ? "active" : "enabled") in proc_udc_show()
196 udc->gadget.is_selfpowered ? "self" : "VBUS", in proc_udc_show()
197 udc->suspended ? ", suspended" : "", in proc_udc_show()
198 udc->driver ? udc->driver->driver.name : "(none)"); in proc_udc_show()
201 if (!udc->clocked) { in proc_udc_show()
228 if (udc->enabled && udc->vbus) { in proc_udc_show()
229 proc_ep_show(s, &udc->ep[0]); in proc_udc_show()
230 list_for_each_entry (ep, &udc->gadget.ep_list, ep.ep_list) { in proc_udc_show()
231 if (ep->ep.desc) in proc_udc_show()
240 udc->pde = proc_create_single_data(debug_filename, 0, NULL, in create_debug_file()
246 if (udc->pde) in remove_debug_file()
258 /*-------------------------------------------------------------------------*/
262 unsigned stopped = ep->stopped; in done()
263 struct at91_udc *udc = ep->udc; in done()
265 list_del_init(&req->queue); in done()
266 if (req->req.status == -EINPROGRESS) in done()
267 req->req.status = status; in done()
269 status = req->req.status; in done()
270 if (status && status != -ESHUTDOWN) in done()
271 VDBG("%s done %p, status %d\n", ep->ep.name, req, status); in done()
273 ep->stopped = 1; in done()
274 spin_unlock(&udc->lock); in done()
275 usb_gadget_giveback_request(&ep->ep, &req->req); in done()
276 spin_lock(&udc->lock); in done()
277 ep->stopped = stopped; in done()
279 /* ep0 is always ready; other endpoints need a non-empty queue */ in done()
280 if (list_empty(&ep->queue) && ep->int_mask != (1 << 0)) in done()
281 at91_udp_write(udc, AT91_UDP_IDR, ep->int_mask); in done()
284 /*-------------------------------------------------------------------------*/
295 * - clear SET_FX bits (setting them could change something)
296 * - set CLR_FX bits (clearing them could change something)
304 * infrequently we write, except maybe for write-then-read idioms.
313 u32 __iomem *creg = ep->creg; in read_fifo()
314 u8 __iomem *dreg = ep->creg + (AT91_UDP_FDR(0) - AT91_UDP_CSR(0)); in read_fifo()
319 buf = req->req.buf + req->req.actual; in read_fifo()
320 bufferspace = req->req.length - req->req.actual; in read_fifo()
332 if (count > ep->ep.maxpacket) in read_fifo()
333 count = ep->ep.maxpacket; in read_fifo()
335 DBG("%s buffer overflow\n", ep->ep.name); in read_fifo()
336 req->req.status = -EOVERFLOW; in read_fifo()
343 if (ep->is_pingpong) { in read_fifo()
344 if (ep->fifo_bank == 0) { in read_fifo()
346 ep->fifo_bank = 1; in read_fifo()
349 ep->fifo_bank = 0; in read_fifo()
355 req->req.actual += count; in read_fifo()
356 is_done = (count < ep->ep.maxpacket); in read_fifo()
360 PACKET("%s %p out/%d%s\n", ep->ep.name, &req->req, count, in read_fifo()
365 * the fifo ... maybe preventing an extra (expensive) OUT-NAK in read_fifo()
369 else if (ep->is_pingpong) { in read_fifo()
377 bufferspace -= count; in read_fifo()
388 u32 __iomem *creg = ep->creg; in write_fifo()
390 u8 __iomem *dreg = ep->creg + (AT91_UDP_FDR(0) - AT91_UDP_CSR(0)); in write_fifo()
396 * reduce the amount of IN-NAKing, but probably won't affect in write_fifo()
397 * throughput much. (Unlike preventing OUT-NAKing!) in write_fifo()
417 buf = req->req.buf + req->req.actual; in write_fifo()
419 total = req->req.length - req->req.actual; in write_fifo()
420 if (ep->ep.maxpacket < total) { in write_fifo()
421 count = ep->ep.maxpacket; in write_fifo()
425 is_last = (count < ep->ep.maxpacket) || !req->req.zero; in write_fifo()
431 * NOTE: incrementing req->actual before we receive the ACK means in write_fifo()
445 req->req.actual += count; in write_fifo()
447 PACKET("%s %p in/%d%s\n", ep->ep.name, &req->req, count, in write_fifo()
459 ep->stopped = 1; in nuke()
460 if (list_empty(&ep->queue)) in nuke()
463 VDBG("%s %s\n", __func__, ep->ep.name); in nuke()
464 while (!list_empty(&ep->queue)) { in nuke()
465 req = list_entry(ep->queue.next, struct at91_request, queue); in nuke()
470 /*-------------------------------------------------------------------------*/
482 || !desc || _ep->name == ep0name in at91_ep_enable()
483 || desc->bDescriptorType != USB_DT_ENDPOINT in at91_ep_enable()
485 || maxpacket > ep->maxpacket) { in at91_ep_enable()
487 return -EINVAL; in at91_ep_enable()
490 udc = ep->udc; in at91_ep_enable()
491 if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN) { in at91_ep_enable()
493 return -ESHUTDOWN; in at91_ep_enable()
500 return -EINVAL; in at91_ep_enable()
515 return -EINVAL; in at91_ep_enable()
517 if (!ep->is_pingpong) { in at91_ep_enable()
519 return -EINVAL; in at91_ep_enable()
525 spin_lock_irqsave(&udc->lock, flags); in at91_ep_enable()
528 ep->is_in = usb_endpoint_dir_in(desc); in at91_ep_enable()
529 ep->is_iso = (tmp == USB_ENDPOINT_XFER_ISOC); in at91_ep_enable()
530 ep->stopped = 0; in at91_ep_enable()
531 if (ep->is_in) in at91_ep_enable()
535 __raw_writel(tmp, ep->creg); in at91_ep_enable()
537 ep->ep.maxpacket = maxpacket; in at91_ep_enable()
543 at91_udp_write(udc, AT91_UDP_RST_EP, ep->int_mask); in at91_ep_enable()
546 spin_unlock_irqrestore(&udc->lock, flags); in at91_ep_enable()
553 struct at91_udc *udc = ep->udc; in at91_ep_disable()
556 if (ep == &ep->udc->ep[0]) in at91_ep_disable()
557 return -EINVAL; in at91_ep_disable()
559 spin_lock_irqsave(&udc->lock, flags); in at91_ep_disable()
561 nuke(ep, -ESHUTDOWN); in at91_ep_disable()
564 ep->ep.desc = NULL; in at91_ep_disable()
565 ep->ep.maxpacket = ep->maxpacket; in at91_ep_disable()
568 if (ep->udc->clocked) { in at91_ep_disable()
569 at91_udp_write(udc, AT91_UDP_RST_EP, ep->int_mask); in at91_ep_disable()
571 __raw_writel(0, ep->creg); in at91_ep_disable()
574 spin_unlock_irqrestore(&udc->lock, flags); in at91_ep_disable()
579 * this is a PIO-only driver, so there's nothing
592 INIT_LIST_HEAD(&req->queue); in at91_ep_alloc_request()
593 return &req->req; in at91_ep_alloc_request()
601 BUG_ON(!list_empty(&req->queue)); in at91_ep_free_request()
617 if (!_req || !_req->complete in at91_ep_queue()
618 || !_req->buf || !list_empty(&req->queue)) { in at91_ep_queue()
620 return -EINVAL; in at91_ep_queue()
623 if (!_ep || (!ep->ep.desc && ep->ep.name != ep0name)) { in at91_ep_queue()
625 return -EINVAL; in at91_ep_queue()
628 udc = ep->udc; in at91_ep_queue()
630 if (!udc || !udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN) { in at91_ep_queue()
632 return -EINVAL; in at91_ep_queue()
635 _req->status = -EINPROGRESS; in at91_ep_queue()
636 _req->actual = 0; in at91_ep_queue()
638 spin_lock_irqsave(&udc->lock, flags); in at91_ep_queue()
641 if (list_empty(&ep->queue) && !ep->stopped) { in at91_ep_queue()
645 * If this control request has a non-empty DATA stage, this in at91_ep_queue()
646 * will start that stage. It works just like a non-control in at91_ep_queue()
652 is_ep0 = (ep->ep.name == ep0name); in at91_ep_queue()
656 if (!udc->req_pending) { in at91_ep_queue()
657 status = -EINVAL; in at91_ep_queue()
665 if (udc->wait_for_config_ack) { in at91_ep_queue()
671 if (req->req.length == 0) { in at91_ep_queue()
675 tmp = __raw_readl(ep->creg); in at91_ep_queue()
678 __raw_writel(tmp, ep->creg); in at91_ep_queue()
679 udc->req_pending = 0; in at91_ep_queue()
684 if (ep->is_in) in at91_ep_queue()
697 list_add_tail (&req->queue, &ep->queue); in at91_ep_queue()
698 at91_udp_write(udc, AT91_UDP_IER, ep->int_mask); in at91_ep_queue()
701 spin_unlock_irqrestore(&udc->lock, flags); in at91_ep_queue()
713 if (!_ep || ep->ep.name == ep0name) in at91_ep_dequeue()
714 return -EINVAL; in at91_ep_dequeue()
716 udc = ep->udc; in at91_ep_dequeue()
718 spin_lock_irqsave(&udc->lock, flags); in at91_ep_dequeue()
721 list_for_each_entry(iter, &ep->queue, queue) { in at91_ep_dequeue()
722 if (&iter->req != _req) in at91_ep_dequeue()
728 spin_unlock_irqrestore(&udc->lock, flags); in at91_ep_dequeue()
729 return -EINVAL; in at91_ep_dequeue()
732 done(ep, req, -ECONNRESET); in at91_ep_dequeue()
733 spin_unlock_irqrestore(&udc->lock, flags); in at91_ep_dequeue()
740 struct at91_udc *udc = ep->udc; in at91_ep_set_halt()
746 if (!_ep || ep->is_iso || !ep->udc->clocked) in at91_ep_set_halt()
747 return -EINVAL; in at91_ep_set_halt()
749 creg = ep->creg; in at91_ep_set_halt()
750 spin_lock_irqsave(&udc->lock, flags); in at91_ep_set_halt()
755 * fail with still-busy IN endpoints, ensuring correct sequencing in at91_ep_set_halt()
759 if (ep->is_in && (!list_empty(&ep->queue) || (csr >> 16) != 0)) in at91_ep_set_halt()
760 status = -EAGAIN; in at91_ep_set_halt()
766 VDBG("halt %s\n", ep->ep.name); in at91_ep_set_halt()
768 at91_udp_write(udc, AT91_UDP_RST_EP, ep->int_mask); in at91_ep_set_halt()
775 spin_unlock_irqrestore(&udc->lock, flags); in at91_ep_set_halt()
790 /*-------------------------------------------------------------------------*/
796 if (!to_udc(gadget)->clocked) in at91_get_frame()
797 return -EINVAL; in at91_get_frame()
808 spin_lock_irqsave(&udc->lock, flags); in at91_wakeup()
810 if (!udc->clocked || !udc->suspended) in at91_wakeup()
822 spin_unlock_irqrestore(&udc->lock, flags); in at91_wakeup()
831 INIT_LIST_HEAD(&udc->gadget.ep_list); in udc_reinit()
832 INIT_LIST_HEAD(&udc->gadget.ep0->ep_list); in udc_reinit()
833 udc->gadget.quirk_stall_not_supp = 1; in udc_reinit()
836 struct at91_ep *ep = &udc->ep[i]; in udc_reinit()
839 list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list); in udc_reinit()
840 ep->ep.desc = NULL; in udc_reinit()
841 ep->stopped = 0; in udc_reinit()
842 ep->fifo_bank = 0; in udc_reinit()
843 usb_ep_set_maxpacket_limit(&ep->ep, ep->maxpacket); in udc_reinit()
844 ep->creg = (void __iomem *) udc->udp_baseaddr + AT91_UDP_CSR(i); in udc_reinit()
846 INIT_LIST_HEAD(&ep->queue); in udc_reinit()
852 struct usb_gadget_driver *driver = udc->driver; in reset_gadget()
855 if (udc->gadget.speed == USB_SPEED_UNKNOWN) in reset_gadget()
857 udc->gadget.speed = USB_SPEED_UNKNOWN; in reset_gadget()
858 udc->suspended = 0; in reset_gadget()
861 struct at91_ep *ep = &udc->ep[i]; in reset_gadget()
863 ep->stopped = 1; in reset_gadget()
864 nuke(ep, -ESHUTDOWN); in reset_gadget()
867 spin_unlock(&udc->lock); in reset_gadget()
868 usb_gadget_udc_reset(&udc->gadget, driver); in reset_gadget()
869 spin_lock(&udc->lock); in reset_gadget()
877 struct usb_gadget_driver *driver = udc->driver; in stop_activity()
880 if (udc->gadget.speed == USB_SPEED_UNKNOWN) in stop_activity()
882 udc->gadget.speed = USB_SPEED_UNKNOWN; in stop_activity()
883 udc->suspended = 0; in stop_activity()
886 struct at91_ep *ep = &udc->ep[i]; in stop_activity()
887 ep->stopped = 1; in stop_activity()
888 nuke(ep, -ESHUTDOWN); in stop_activity()
891 spin_unlock(&udc->lock); in stop_activity()
892 driver->disconnect(&udc->gadget); in stop_activity()
893 spin_lock(&udc->lock); in stop_activity()
901 if (udc->clocked) in clk_on()
903 udc->clocked = 1; in clk_on()
905 clk_enable(udc->iclk); in clk_on()
906 clk_enable(udc->fclk); in clk_on()
911 if (!udc->clocked) in clk_off()
913 udc->clocked = 0; in clk_off()
914 udc->gadget.speed = USB_SPEED_UNKNOWN; in clk_off()
915 clk_disable(udc->fclk); in clk_off()
916 clk_disable(udc->iclk); in clk_off()
925 if (!udc->enabled || !udc->vbus) in pullup()
940 if (udc->caps && udc->caps->pullup) in pullup()
941 udc->caps->pullup(udc, is_on); in pullup()
951 spin_lock_irqsave(&udc->lock, flags); in at91_vbus_session()
952 udc->vbus = (is_active != 0); in at91_vbus_session()
953 if (udc->driver) in at91_vbus_session()
957 spin_unlock_irqrestore(&udc->lock, flags); in at91_vbus_session()
966 spin_lock_irqsave(&udc->lock, flags); in at91_pullup()
967 udc->enabled = is_on = !!is_on; in at91_pullup()
969 spin_unlock_irqrestore(&udc->lock, flags); in at91_pullup()
978 spin_lock_irqsave(&udc->lock, flags); in at91_set_selfpowered()
979 gadget->is_selfpowered = (is_on != 0); in at91_set_selfpowered()
980 spin_unlock_irqrestore(&udc->lock, flags); in at91_set_selfpowered()
998 * VBUS-powered devices may also want to support bigger
1004 /*-------------------------------------------------------------------------*/
1009 u32 __iomem *creg = ep->creg; in handle_ep()
1012 if (!list_empty(&ep->queue)) in handle_ep()
1013 req = list_entry(ep->queue.next, in handle_ep()
1018 if (ep->is_in) { in handle_ep()
1030 if (ep->is_iso && req) in handle_ep()
1031 req->req.status = -EILSEQ; in handle_ep()
1050 u32 __iomem *creg = ep->creg; in handle_setup()
1051 u8 __iomem *dreg = ep->creg + (AT91_UDP_FDR(0) - AT91_UDP_CSR(0)); in handle_setup()
1057 /* read and ack SETUP; hard-fail for bogus packets */ in handle_setup()
1060 while (rxcount--) in handle_setup()
1064 ep->is_in = 1; in handle_setup()
1067 ep->is_in = 0; in handle_setup()
1072 status = -EINVAL; in handle_setup()
1077 udc->wait_for_addr_ack = 0; in handle_setup()
1078 udc->wait_for_config_ack = 0; in handle_setup()
1079 ep->stopped = 0; in handle_setup()
1095 udc->req_pending = 1; in handle_setup()
1104 udc->addr = w_value; in handle_setup()
1105 udc->wait_for_addr_ack = 1; in handle_setup()
1106 udc->req_pending = 0; in handle_setup()
1114 udc->wait_for_config_ack = (tmp == 0); in handle_setup()
1116 udc->wait_for_config_ack = (tmp != 0); in handle_setup()
1117 if (udc->wait_for_config_ack) in handle_setup()
1124 * devices may report they're VBUS powered. in handle_setup()
1128 tmp = (udc->gadget.is_selfpowered << USB_DEVICE_SELF_POWERED); in handle_setup()
1177 ep = &udc->ep[tmp]; in handle_setup()
1178 if (tmp >= NUM_ENDPOINTS || (tmp && !ep->ep.desc)) in handle_setup()
1183 if (!ep->is_in) in handle_setup()
1185 } else if (ep->is_in) in handle_setup()
1188 PACKET("get %s status\n", ep->ep.name); in handle_setup()
1189 if (__raw_readl(ep->creg) & AT91_UDP_FORCESTALL) in handle_setup()
1200 ep = &udc->ep[tmp]; in handle_setup()
1203 if (!ep->ep.desc || ep->is_iso) in handle_setup()
1206 if (!ep->is_in) in handle_setup()
1208 } else if (ep->is_in) in handle_setup()
1211 tmp = __raw_readl(ep->creg); in handle_setup()
1214 __raw_writel(tmp, ep->creg); in handle_setup()
1219 ep = &udc->ep[tmp]; in handle_setup()
1224 if (!ep->ep.desc || ep->is_iso) in handle_setup()
1227 if (!ep->is_in) in handle_setup()
1229 } else if (ep->is_in) in handle_setup()
1232 at91_udp_write(udc, AT91_UDP_RST_EP, ep->int_mask); in handle_setup()
1234 tmp = __raw_readl(ep->creg); in handle_setup()
1237 __raw_writel(tmp, ep->creg); in handle_setup()
1238 if (!list_empty(&ep->queue)) in handle_setup()
1248 if (udc->driver) { in handle_setup()
1249 spin_unlock(&udc->lock); in handle_setup()
1250 status = udc->driver->setup(&udc->gadget, &pkt.r); in handle_setup()
1251 spin_lock(&udc->lock); in handle_setup()
1254 status = -ENODEV; in handle_setup()
1261 udc->req_pending = 0; in handle_setup()
1271 udc->req_pending = 0; in handle_setup()
1276 struct at91_ep *ep0 = &udc->ep[0]; in handle_ep0()
1277 u32 __iomem *creg = ep0->creg; in handle_ep0()
1282 nuke(ep0, -EPROTO); in handle_ep0()
1283 udc->req_pending = 0; in handle_ep0()
1292 udc->req_pending = 0; in handle_ep0()
1297 if (list_empty(&ep0->queue)) in handle_ep0()
1300 req = list_entry(ep0->queue.next, struct at91_request, queue); in handle_ep0()
1308 if (req && ep0->is_in) { in handle_ep0()
1310 udc->req_pending = 0; in handle_ep0()
1314 * - last IN DATA packet (including GET_STATUS) in handle_ep0()
1315 * - IN/STATUS for OUT DATA in handle_ep0()
1316 * - IN/STATUS for any zero-length DATA stage in handle_ep0()
1321 udc->req_pending = 0; in handle_ep0()
1328 if (udc->wait_for_addr_ack) { in handle_ep0()
1332 AT91_UDP_FEN | udc->addr); in handle_ep0()
1335 if (udc->addr) in handle_ep0()
1339 udc->wait_for_addr_ack = 0; in handle_ep0()
1340 VDBG("address %d\n", udc->addr); in handle_ep0()
1351 if (!ep0->is_in) { in handle_ep0()
1360 udc->req_pending = 0; in handle_ep0()
1362 } else if (udc->req_pending) { in handle_ep0()
1365 * "deferred response" mode for control-OUT in handle_ep0()
1366 * transfers. (For control-IN it's fine.) in handle_ep0()
1375 * would almost be a non-deferred response, in handle_ep0()
1380 DBG("no control-OUT deferred responses!\n"); in handle_ep0()
1382 udc->req_pending = 0; in handle_ep0()
1385 /* STATUS stage for control-IN; ack. */ in handle_ep0()
1404 spin_lock_irqsave(&udc->lock, flags); in at91_udc_irq()
1406 if (!udc->clocked) { in at91_udc_irq()
1411 while (rescans--) { in at91_udc_irq()
1427 udc->addr = 0; in at91_udc_irq()
1433 udc->gadget.speed = USB_SPEED_FULL; in at91_udc_irq()
1434 udc->suspended = 0; in at91_udc_irq()
1450 if (udc->suspended) in at91_udc_irq()
1452 udc->suspended = 1; in at91_udc_irq()
1455 * NOTE: when suspending a VBUS-powered device, the in at91_udc_irq()
1458 * 500uA power (2500uA for some high-power configs). in at91_udc_irq()
1460 if (udc->driver && udc->driver->suspend) { in at91_udc_irq()
1461 spin_unlock(&udc->lock); in at91_udc_irq()
1462 udc->driver->suspend(&udc->gadget); in at91_udc_irq()
1463 spin_lock(&udc->lock); in at91_udc_irq()
1472 if (!udc->suspended) in at91_udc_irq()
1474 udc->suspended = 0; in at91_udc_irq()
1477 * NOTE: for a VBUS-powered device, the gadget driver in at91_udc_irq()
1481 if (udc->driver && udc->driver->resume) { in at91_udc_irq()
1482 spin_unlock(&udc->lock); in at91_udc_irq()
1483 udc->driver->resume(&udc->gadget); in at91_udc_irq()
1484 spin_lock(&udc->lock); in at91_udc_irq()
1491 struct at91_ep *ep = &udc->ep[1]; in at91_udc_irq()
1507 spin_unlock_irqrestore(&udc->lock, flags); in at91_udc_irq()
1512 /*-------------------------------------------------------------------------*/
1516 if (value != udc->vbus) in at91_vbus_update()
1517 at91_vbus_session(&udc->gadget, value); in at91_vbus_update()
1526 at91_vbus_update(udc, gpiod_get_value(udc->board.vbus_pin)); in at91_vbus_irq()
1536 at91_vbus_update(udc, gpiod_get_value_cansleep(udc->board.vbus_pin)); in at91_vbus_timer_work()
1538 if (!timer_pending(&udc->vbus_timer)) in at91_vbus_timer_work()
1539 mod_timer(&udc->vbus_timer, jiffies + VBUS_POLL_TIMEOUT); in at91_vbus_timer_work()
1551 schedule_work(&udc->vbus_timer_work); in at91_vbus_timer()
1560 udc->driver = driver; in at91_start()
1561 udc->gadget.dev.of_node = udc->pdev->dev.of_node; in at91_start()
1562 udc->enabled = 1; in at91_start()
1563 udc->gadget.is_selfpowered = 1; in at91_start()
1574 spin_lock_irqsave(&udc->lock, flags); in at91_stop()
1575 udc->enabled = 0; in at91_stop()
1577 spin_unlock_irqrestore(&udc->lock, flags); in at91_stop()
1579 udc->driver = NULL; in at91_stop()
1584 /*-------------------------------------------------------------------------*/
1592 spin_lock_irqsave(&udc->lock, flags); in at91udc_shutdown()
1594 spin_unlock_irqrestore(&udc->lock, flags); in at91udc_shutdown()
1603 ep = &udc->ep[i]; in at91rm9200_udc_init()
1608 ep->maxpacket = 8; in at91rm9200_udc_init()
1611 ep->maxpacket = 64; in at91rm9200_udc_init()
1614 ep->maxpacket = 256; in at91rm9200_udc_init()
1619 if (!udc->board.pullup_pin) { in at91rm9200_udc_init()
1621 return -ENODEV; in at91rm9200_udc_init()
1624 gpiod_direction_output(udc->board.pullup_pin, in at91rm9200_udc_init()
1625 gpiod_is_active_low(udc->board.pullup_pin)); in at91rm9200_udc_init()
1632 gpiod_set_value(udc->board.pullup_pin, is_on); in at91rm9200_udc_pullup()
1646 ep = &udc->ep[i]; in at91sam9260_udc_init()
1650 ep->maxpacket = 64; in at91sam9260_udc_init()
1653 ep->maxpacket = 512; in at91sam9260_udc_init()
1684 ep = &udc->ep[i]; in at91sam9261_udc_init()
1688 ep->maxpacket = 8; in at91sam9261_udc_init()
1691 ep->maxpacket = 64; in at91sam9261_udc_init()
1694 ep->maxpacket = 256; in at91sam9261_udc_init()
1699 udc->matrix = syscon_regmap_lookup_by_phandle(udc->pdev->dev.of_node, in at91sam9261_udc_init()
1701 return PTR_ERR_OR_ZERO(udc->matrix); in at91sam9261_udc_init()
1711 regmap_update_bits(udc->matrix, AT91SAM9261_MATRIX_USBPUCR, in at91sam9261_udc_pullup()
1726 ep = &udc->ep[i]; in at91sam9263_udc_init()
1733 ep->maxpacket = 64; in at91sam9263_udc_init()
1737 ep->maxpacket = 256; in at91sam9263_udc_init()
1752 .compatible = "atmel,at91rm9200-udc",
1756 .compatible = "atmel,at91sam9260-udc",
1760 .compatible = "atmel,at91sam9261-udc",
1764 .compatible = "atmel,at91sam9263-udc",
1773 struct at91_udc_data *board = &udc->board; in at91udc_of_init()
1777 if (of_property_read_u32(np, "atmel,vbus-polled", &val) == 0) in at91udc_of_init()
1778 board->vbus_polled = 1; in at91udc_of_init()
1780 board->vbus_pin = fwnode_gpiod_get_index(of_fwnode_handle(np), in at91udc_of_init()
1783 if (IS_ERR(board->vbus_pin)) in at91udc_of_init()
1784 board->vbus_pin = NULL; in at91udc_of_init()
1786 board->pullup_pin = fwnode_gpiod_get_index(of_fwnode_handle(np), in at91udc_of_init()
1789 if (IS_ERR(board->pullup_pin)) in at91udc_of_init()
1790 board->pullup_pin = NULL; in at91udc_of_init()
1794 udc->caps = match->data; in at91udc_of_init()
1799 struct device *dev = &pdev->dev; in at91udc_probe()
1807 return -ENOMEM; in at91udc_probe()
1810 udc->gadget.dev.parent = dev; in at91udc_probe()
1811 at91udc_of_init(udc, pdev->dev.of_node); in at91udc_probe()
1812 udc->pdev = pdev; in at91udc_probe()
1813 udc->enabled = 0; in at91udc_probe()
1814 spin_lock_init(&udc->lock); in at91udc_probe()
1816 udc->gadget.ops = &at91_udc_ops; in at91udc_probe()
1817 udc->gadget.ep0 = &udc->ep[0].ep; in at91udc_probe()
1818 udc->gadget.name = driver_name; in at91udc_probe()
1819 udc->gadget.dev.init_name = "gadget"; in at91udc_probe()
1822 ep = &udc->ep[i]; in at91udc_probe()
1823 ep->ep.name = ep_info[i].name; in at91udc_probe()
1824 ep->ep.caps = ep_info[i].caps; in at91udc_probe()
1825 ep->ep.ops = &at91_ep_ops; in at91udc_probe()
1826 ep->udc = udc; in at91udc_probe()
1827 ep->int_mask = BIT(i); in at91udc_probe()
1829 ep->is_pingpong = 1; in at91udc_probe()
1832 udc->udp_baseaddr = devm_platform_ioremap_resource(pdev, 0); in at91udc_probe()
1833 if (IS_ERR(udc->udp_baseaddr)) in at91udc_probe()
1834 return PTR_ERR(udc->udp_baseaddr); in at91udc_probe()
1836 if (udc->caps && udc->caps->init) { in at91udc_probe()
1837 retval = udc->caps->init(udc); in at91udc_probe()
1845 udc->iclk = devm_clk_get(dev, "pclk"); in at91udc_probe()
1846 if (IS_ERR(udc->iclk)) in at91udc_probe()
1847 return PTR_ERR(udc->iclk); in at91udc_probe()
1849 udc->fclk = devm_clk_get(dev, "hclk"); in at91udc_probe()
1850 if (IS_ERR(udc->fclk)) in at91udc_probe()
1851 return PTR_ERR(udc->fclk); in at91udc_probe()
1854 clk_set_rate(udc->fclk, 48000000); in at91udc_probe()
1855 retval = clk_prepare(udc->fclk); in at91udc_probe()
1859 retval = clk_prepare_enable(udc->iclk); in at91udc_probe()
1865 /* Clear all pending interrupts - UDP may be used by bootloader. */ in at91udc_probe()
1867 clk_disable(udc->iclk); in at91udc_probe()
1870 udc->udp_irq = retval = platform_get_irq(pdev, 0); in at91udc_probe()
1873 retval = devm_request_irq(dev, udc->udp_irq, at91_udc_irq, 0, in at91udc_probe()
1876 DBG("request irq %d failed\n", udc->udp_irq); in at91udc_probe()
1880 if (udc->board.vbus_pin) { in at91udc_probe()
1881 gpiod_direction_input(udc->board.vbus_pin); in at91udc_probe()
1884 * Get the initial state of VBUS - we cannot expect in at91udc_probe()
1887 udc->vbus = gpiod_get_value_cansleep(udc->board.vbus_pin); in at91udc_probe()
1889 if (udc->board.vbus_polled) { in at91udc_probe()
1890 INIT_WORK(&udc->vbus_timer_work, at91_vbus_timer_work); in at91udc_probe()
1891 timer_setup(&udc->vbus_timer, at91_vbus_timer, 0); in at91udc_probe()
1892 mod_timer(&udc->vbus_timer, in at91udc_probe()
1896 gpiod_to_irq(udc->board.vbus_pin), in at91udc_probe()
1900 desc_to_gpio(udc->board.vbus_pin)); in at91udc_probe()
1905 DBG("no VBUS detection, assuming always-on\n"); in at91udc_probe()
1906 udc->vbus = 1; in at91udc_probe()
1908 retval = usb_add_gadget_udc(dev, &udc->gadget); in at91udc_probe()
1919 clk_unprepare(udc->iclk); in at91udc_probe()
1921 clk_unprepare(udc->fclk); in at91udc_probe()
1935 usb_del_gadget_udc(&udc->gadget); in at91udc_remove()
1936 if (udc->driver) { in at91udc_remove()
1937 dev_err(&pdev->dev, in at91udc_remove()
1942 spin_lock_irqsave(&udc->lock, flags); in at91udc_remove()
1944 spin_unlock_irqrestore(&udc->lock, flags); in at91udc_remove()
1946 device_init_wakeup(&pdev->dev, 0); in at91udc_remove()
1948 clk_unprepare(udc->fclk); in at91udc_remove()
1949 clk_unprepare(udc->iclk); in at91udc_remove()
1956 int wake = udc->driver && device_may_wakeup(&pdev->dev); in at91udc_suspend()
1964 if ((!udc->suspended && udc->addr) in at91udc_suspend()
1967 spin_lock_irqsave(&udc->lock, flags); in at91udc_suspend()
1970 spin_unlock_irqrestore(&udc->lock, flags); in at91udc_suspend()
1972 enable_irq_wake(udc->udp_irq); in at91udc_suspend()
1974 udc->active_suspend = wake; in at91udc_suspend()
1975 if (udc->board.vbus_pin && !udc->board.vbus_polled && wake) in at91udc_suspend()
1976 enable_irq_wake(gpiod_to_irq(udc->board.vbus_pin)); in at91udc_suspend()
1985 if (udc->board.vbus_pin && !udc->board.vbus_polled && in at91udc_resume()
1986 udc->active_suspend) in at91udc_resume()
1987 disable_irq_wake(gpiod_to_irq(udc->board.vbus_pin)); in at91udc_resume()
1990 if (udc->active_suspend) in at91udc_resume()
1991 disable_irq_wake(udc->udp_irq); in at91udc_resume()
1993 spin_lock_irqsave(&udc->lock, flags); in at91udc_resume()
1995 spin_unlock_irqrestore(&udc->lock, flags); in at91udc_resume()