Lines Matching +full:ping +full:- +full:gpios
1 // SPDX-License-Identifier: GPL-2.0+
3 * at91_udc -- driver for at91-series USB peripheral controller
32 #include <linux/mfd/syscon/atmel-matrix.h>
38 * This controller is simple and PIO-only. It's used in many AT91-series
40 * at91sam926x (arm926ejs, with MMU), and several no-mmu versions.
42 * This driver expects the board has been wired with two GPIOs supporting
75 EP_INFO("ep3-int",
90 __raw_readl((udc)->udp_baseaddr + (reg))
92 __raw_writel((val), (udc)->udp_baseaddr + (reg))
94 /*-------------------------------------------------------------------------*/
108 "control", "out-iso", "out-bulk", "out-int", in proc_ep_show()
109 "BOGUS", "in-iso", "in-bulk", "in-int"}; in proc_ep_show()
114 struct at91_udc *udc = ep->udc; in proc_ep_show()
116 spin_lock_irqsave(&udc->lock, flags); in proc_ep_show()
118 csr = __raw_readl(ep->creg); in proc_ep_show()
120 /* NOTE: not collecting per-endpoint irq statistics... */ in proc_ep_show()
124 ep->ep.name, ep->ep.maxpacket, in proc_ep_show()
125 ep->is_in ? "in" : "out", in proc_ep_show()
126 ep->is_iso ? " iso" : "", in proc_ep_show()
127 ep->is_pingpong in proc_ep_show()
128 ? (ep->fifo_bank ? "pong" : "ping") in proc_ep_show()
130 ep->stopped ? " stopped" : ""); in proc_ep_show()
150 if (list_empty (&ep->queue)) in proc_ep_show()
153 else list_for_each_entry (req, &ep->queue, queue) { in proc_ep_show()
154 unsigned length = req->req.actual; in proc_ep_show()
157 &req->req, length, in proc_ep_show()
158 req->req.length, req->req.buf); in proc_ep_show()
160 spin_unlock_irqrestore(&udc->lock, flags); in proc_ep_show()
184 struct at91_udc *udc = s->private; in proc_udc_show()
191 udc->vbus ? "present" : "off", in proc_udc_show()
192 udc->enabled in proc_udc_show()
193 ? (udc->vbus ? "active" : "enabled") in proc_udc_show()
195 udc->gadget.is_selfpowered ? "self" : "VBUS", in proc_udc_show()
196 udc->suspended ? ", suspended" : "", in proc_udc_show()
197 udc->driver ? udc->driver->driver.name : "(none)"); in proc_udc_show()
200 if (!udc->clocked) { in proc_udc_show()
227 if (udc->enabled && udc->vbus) { in proc_udc_show()
228 proc_ep_show(s, &udc->ep[0]); in proc_udc_show()
229 list_for_each_entry (ep, &udc->gadget.ep_list, ep.ep_list) { in proc_udc_show()
230 if (ep->ep.desc) in proc_udc_show()
239 udc->pde = proc_create_single_data(debug_filename, 0, NULL, in create_debug_file()
245 if (udc->pde) in remove_debug_file()
257 /*-------------------------------------------------------------------------*/
261 unsigned stopped = ep->stopped; in done()
262 struct at91_udc *udc = ep->udc; in done()
264 list_del_init(&req->queue); in done()
265 if (req->req.status == -EINPROGRESS) in done()
266 req->req.status = status; in done()
268 status = req->req.status; in done()
269 if (status && status != -ESHUTDOWN) in done()
270 VDBG("%s done %p, status %d\n", ep->ep.name, req, status); in done()
272 ep->stopped = 1; in done()
273 spin_unlock(&udc->lock); in done()
274 usb_gadget_giveback_request(&ep->ep, &req->req); in done()
275 spin_lock(&udc->lock); in done()
276 ep->stopped = stopped; in done()
278 /* ep0 is always ready; other endpoints need a non-empty queue */ in done()
279 if (list_empty(&ep->queue) && ep->int_mask != (1 << 0)) in done()
280 at91_udp_write(udc, AT91_UDP_IDR, ep->int_mask); in done()
283 /*-------------------------------------------------------------------------*/
294 * - clear SET_FX bits (setting them could change something)
295 * - set CLR_FX bits (clearing them could change something)
303 * infrequently we write, except maybe for write-then-read idioms.
312 u32 __iomem *creg = ep->creg; in read_fifo()
313 u8 __iomem *dreg = ep->creg + (AT91_UDP_FDR(0) - AT91_UDP_CSR(0)); in read_fifo()
318 buf = req->req.buf + req->req.actual; in read_fifo()
319 bufferspace = req->req.length - req->req.actual; in read_fifo()
331 if (count > ep->ep.maxpacket) in read_fifo()
332 count = ep->ep.maxpacket; in read_fifo()
334 DBG("%s buffer overflow\n", ep->ep.name); in read_fifo()
335 req->req.status = -EOVERFLOW; in read_fifo()
342 if (ep->is_pingpong) { in read_fifo()
343 if (ep->fifo_bank == 0) { in read_fifo()
345 ep->fifo_bank = 1; in read_fifo()
348 ep->fifo_bank = 0; in read_fifo()
354 req->req.actual += count; in read_fifo()
355 is_done = (count < ep->ep.maxpacket); in read_fifo()
359 PACKET("%s %p out/%d%s\n", ep->ep.name, &req->req, count, in read_fifo()
364 * the fifo ... maybe preventing an extra (expensive) OUT-NAK in read_fifo()
368 else if (ep->is_pingpong) { in read_fifo()
376 bufferspace -= count; in read_fifo()
387 u32 __iomem *creg = ep->creg; in write_fifo()
389 u8 __iomem *dreg = ep->creg + (AT91_UDP_FDR(0) - AT91_UDP_CSR(0)); in write_fifo()
395 * reduce the amount of IN-NAKing, but probably won't affect in write_fifo()
396 * throughput much. (Unlike preventing OUT-NAKing!) in write_fifo()
416 buf = req->req.buf + req->req.actual; in write_fifo()
418 total = req->req.length - req->req.actual; in write_fifo()
419 if (ep->ep.maxpacket < total) { in write_fifo()
420 count = ep->ep.maxpacket; in write_fifo()
424 is_last = (count < ep->ep.maxpacket) || !req->req.zero; in write_fifo()
430 * NOTE: incrementing req->actual before we receive the ACK means in write_fifo()
444 req->req.actual += count; in write_fifo()
446 PACKET("%s %p in/%d%s\n", ep->ep.name, &req->req, count, in write_fifo()
458 ep->stopped = 1; in nuke()
459 if (list_empty(&ep->queue)) in nuke()
462 VDBG("%s %s\n", __func__, ep->ep.name); in nuke()
463 while (!list_empty(&ep->queue)) { in nuke()
464 req = list_entry(ep->queue.next, struct at91_request, queue); in nuke()
469 /*-------------------------------------------------------------------------*/
481 || !desc || _ep->name == ep0name in at91_ep_enable()
482 || desc->bDescriptorType != USB_DT_ENDPOINT in at91_ep_enable()
484 || maxpacket > ep->maxpacket) { in at91_ep_enable()
486 return -EINVAL; in at91_ep_enable()
489 udc = ep->udc; in at91_ep_enable()
490 if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN) { in at91_ep_enable()
492 return -ESHUTDOWN; in at91_ep_enable()
499 return -EINVAL; in at91_ep_enable()
514 return -EINVAL; in at91_ep_enable()
516 if (!ep->is_pingpong) { in at91_ep_enable()
518 return -EINVAL; in at91_ep_enable()
524 spin_lock_irqsave(&udc->lock, flags); in at91_ep_enable()
527 ep->is_in = usb_endpoint_dir_in(desc); in at91_ep_enable()
528 ep->is_iso = (tmp == USB_ENDPOINT_XFER_ISOC); in at91_ep_enable()
529 ep->stopped = 0; in at91_ep_enable()
530 if (ep->is_in) in at91_ep_enable()
534 __raw_writel(tmp, ep->creg); in at91_ep_enable()
536 ep->ep.maxpacket = maxpacket; in at91_ep_enable()
542 at91_udp_write(udc, AT91_UDP_RST_EP, ep->int_mask); in at91_ep_enable()
545 spin_unlock_irqrestore(&udc->lock, flags); in at91_ep_enable()
552 struct at91_udc *udc = ep->udc; in at91_ep_disable()
555 if (ep == &ep->udc->ep[0]) in at91_ep_disable()
556 return -EINVAL; in at91_ep_disable()
558 spin_lock_irqsave(&udc->lock, flags); in at91_ep_disable()
560 nuke(ep, -ESHUTDOWN); in at91_ep_disable()
563 ep->ep.desc = NULL; in at91_ep_disable()
564 ep->ep.maxpacket = ep->maxpacket; in at91_ep_disable()
567 if (ep->udc->clocked) { in at91_ep_disable()
568 at91_udp_write(udc, AT91_UDP_RST_EP, ep->int_mask); in at91_ep_disable()
570 __raw_writel(0, ep->creg); in at91_ep_disable()
573 spin_unlock_irqrestore(&udc->lock, flags); in at91_ep_disable()
578 * this is a PIO-only driver, so there's nothing
591 INIT_LIST_HEAD(&req->queue); in at91_ep_alloc_request()
592 return &req->req; in at91_ep_alloc_request()
600 BUG_ON(!list_empty(&req->queue)); in at91_ep_free_request()
616 if (!_req || !_req->complete in at91_ep_queue()
617 || !_req->buf || !list_empty(&req->queue)) { in at91_ep_queue()
619 return -EINVAL; in at91_ep_queue()
622 if (!_ep || (!ep->ep.desc && ep->ep.name != ep0name)) { in at91_ep_queue()
624 return -EINVAL; in at91_ep_queue()
627 udc = ep->udc; in at91_ep_queue()
629 if (!udc || !udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN) { in at91_ep_queue()
631 return -EINVAL; in at91_ep_queue()
634 _req->status = -EINPROGRESS; in at91_ep_queue()
635 _req->actual = 0; in at91_ep_queue()
637 spin_lock_irqsave(&udc->lock, flags); in at91_ep_queue()
640 if (list_empty(&ep->queue) && !ep->stopped) { in at91_ep_queue()
644 * If this control request has a non-empty DATA stage, this in at91_ep_queue()
645 * will start that stage. It works just like a non-control in at91_ep_queue()
651 is_ep0 = (ep->ep.name == ep0name); in at91_ep_queue()
655 if (!udc->req_pending) { in at91_ep_queue()
656 status = -EINVAL; in at91_ep_queue()
664 if (udc->wait_for_config_ack) { in at91_ep_queue()
670 if (req->req.length == 0) { in at91_ep_queue()
674 tmp = __raw_readl(ep->creg); in at91_ep_queue()
677 __raw_writel(tmp, ep->creg); in at91_ep_queue()
678 udc->req_pending = 0; in at91_ep_queue()
683 if (ep->is_in) in at91_ep_queue()
696 list_add_tail (&req->queue, &ep->queue); in at91_ep_queue()
697 at91_udp_write(udc, AT91_UDP_IER, ep->int_mask); in at91_ep_queue()
700 spin_unlock_irqrestore(&udc->lock, flags); in at91_ep_queue()
712 if (!_ep || ep->ep.name == ep0name) in at91_ep_dequeue()
713 return -EINVAL; in at91_ep_dequeue()
715 udc = ep->udc; in at91_ep_dequeue()
717 spin_lock_irqsave(&udc->lock, flags); in at91_ep_dequeue()
720 list_for_each_entry (req, &ep->queue, queue) { in at91_ep_dequeue()
721 if (&req->req == _req) in at91_ep_dequeue()
724 if (&req->req != _req) { in at91_ep_dequeue()
725 spin_unlock_irqrestore(&udc->lock, flags); in at91_ep_dequeue()
726 return -EINVAL; in at91_ep_dequeue()
729 done(ep, req, -ECONNRESET); in at91_ep_dequeue()
730 spin_unlock_irqrestore(&udc->lock, flags); in at91_ep_dequeue()
737 struct at91_udc *udc = ep->udc; in at91_ep_set_halt()
743 if (!_ep || ep->is_iso || !ep->udc->clocked) in at91_ep_set_halt()
744 return -EINVAL; in at91_ep_set_halt()
746 creg = ep->creg; in at91_ep_set_halt()
747 spin_lock_irqsave(&udc->lock, flags); in at91_ep_set_halt()
752 * fail with still-busy IN endpoints, ensuring correct sequencing in at91_ep_set_halt()
756 if (ep->is_in && (!list_empty(&ep->queue) || (csr >> 16) != 0)) in at91_ep_set_halt()
757 status = -EAGAIN; in at91_ep_set_halt()
763 VDBG("halt %s\n", ep->ep.name); in at91_ep_set_halt()
765 at91_udp_write(udc, AT91_UDP_RST_EP, ep->int_mask); in at91_ep_set_halt()
772 spin_unlock_irqrestore(&udc->lock, flags); in at91_ep_set_halt()
787 /*-------------------------------------------------------------------------*/
793 if (!to_udc(gadget)->clocked) in at91_get_frame()
794 return -EINVAL; in at91_get_frame()
805 spin_lock_irqsave(&udc->lock, flags); in at91_wakeup()
807 if (!udc->clocked || !udc->suspended) in at91_wakeup()
819 spin_unlock_irqrestore(&udc->lock, flags); in at91_wakeup()
828 INIT_LIST_HEAD(&udc->gadget.ep_list); in udc_reinit()
829 INIT_LIST_HEAD(&udc->gadget.ep0->ep_list); in udc_reinit()
830 udc->gadget.quirk_stall_not_supp = 1; in udc_reinit()
833 struct at91_ep *ep = &udc->ep[i]; in udc_reinit()
836 list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list); in udc_reinit()
837 ep->ep.desc = NULL; in udc_reinit()
838 ep->stopped = 0; in udc_reinit()
839 ep->fifo_bank = 0; in udc_reinit()
840 usb_ep_set_maxpacket_limit(&ep->ep, ep->maxpacket); in udc_reinit()
841 ep->creg = (void __iomem *) udc->udp_baseaddr + AT91_UDP_CSR(i); in udc_reinit()
843 INIT_LIST_HEAD(&ep->queue); in udc_reinit()
849 struct usb_gadget_driver *driver = udc->driver; in reset_gadget()
852 if (udc->gadget.speed == USB_SPEED_UNKNOWN) in reset_gadget()
854 udc->gadget.speed = USB_SPEED_UNKNOWN; in reset_gadget()
855 udc->suspended = 0; in reset_gadget()
858 struct at91_ep *ep = &udc->ep[i]; in reset_gadget()
860 ep->stopped = 1; in reset_gadget()
861 nuke(ep, -ESHUTDOWN); in reset_gadget()
864 spin_unlock(&udc->lock); in reset_gadget()
865 usb_gadget_udc_reset(&udc->gadget, driver); in reset_gadget()
866 spin_lock(&udc->lock); in reset_gadget()
874 struct usb_gadget_driver *driver = udc->driver; in stop_activity()
877 if (udc->gadget.speed == USB_SPEED_UNKNOWN) in stop_activity()
879 udc->gadget.speed = USB_SPEED_UNKNOWN; in stop_activity()
880 udc->suspended = 0; in stop_activity()
883 struct at91_ep *ep = &udc->ep[i]; in stop_activity()
884 ep->stopped = 1; in stop_activity()
885 nuke(ep, -ESHUTDOWN); in stop_activity()
888 spin_unlock(&udc->lock); in stop_activity()
889 driver->disconnect(&udc->gadget); in stop_activity()
890 spin_lock(&udc->lock); in stop_activity()
898 if (udc->clocked) in clk_on()
900 udc->clocked = 1; in clk_on()
902 clk_enable(udc->iclk); in clk_on()
903 clk_enable(udc->fclk); in clk_on()
908 if (!udc->clocked) in clk_off()
910 udc->clocked = 0; in clk_off()
911 udc->gadget.speed = USB_SPEED_UNKNOWN; in clk_off()
912 clk_disable(udc->fclk); in clk_off()
913 clk_disable(udc->iclk); in clk_off()
922 if (!udc->enabled || !udc->vbus) in pullup()
937 if (udc->caps && udc->caps->pullup) in pullup()
938 udc->caps->pullup(udc, is_on); in pullup()
948 spin_lock_irqsave(&udc->lock, flags); in at91_vbus_session()
949 udc->vbus = (is_active != 0); in at91_vbus_session()
950 if (udc->driver) in at91_vbus_session()
954 spin_unlock_irqrestore(&udc->lock, flags); in at91_vbus_session()
963 spin_lock_irqsave(&udc->lock, flags); in at91_pullup()
964 udc->enabled = is_on = !!is_on; in at91_pullup()
966 spin_unlock_irqrestore(&udc->lock, flags); in at91_pullup()
975 spin_lock_irqsave(&udc->lock, flags); in at91_set_selfpowered()
976 gadget->is_selfpowered = (is_on != 0); in at91_set_selfpowered()
977 spin_unlock_irqrestore(&udc->lock, flags); in at91_set_selfpowered()
995 * VBUS-powered devices may also also want to support bigger
1001 /*-------------------------------------------------------------------------*/
1006 u32 __iomem *creg = ep->creg; in handle_ep()
1009 if (!list_empty(&ep->queue)) in handle_ep()
1010 req = list_entry(ep->queue.next, in handle_ep()
1015 if (ep->is_in) { in handle_ep()
1027 if (ep->is_iso && req) in handle_ep()
1028 req->req.status = -EILSEQ; in handle_ep()
1047 u32 __iomem *creg = ep->creg; in handle_setup()
1048 u8 __iomem *dreg = ep->creg + (AT91_UDP_FDR(0) - AT91_UDP_CSR(0)); in handle_setup()
1054 /* read and ack SETUP; hard-fail for bogus packets */ in handle_setup()
1057 while (rxcount--) in handle_setup()
1061 ep->is_in = 1; in handle_setup()
1064 ep->is_in = 0; in handle_setup()
1069 status = -EINVAL; in handle_setup()
1074 udc->wait_for_addr_ack = 0; in handle_setup()
1075 udc->wait_for_config_ack = 0; in handle_setup()
1076 ep->stopped = 0; in handle_setup()
1092 udc->req_pending = 1; in handle_setup()
1101 udc->addr = w_value; in handle_setup()
1102 udc->wait_for_addr_ack = 1; in handle_setup()
1103 udc->req_pending = 0; in handle_setup()
1111 udc->wait_for_config_ack = (tmp == 0); in handle_setup()
1113 udc->wait_for_config_ack = (tmp != 0); in handle_setup()
1114 if (udc->wait_for_config_ack) in handle_setup()
1125 tmp = (udc->gadget.is_selfpowered << USB_DEVICE_SELF_POWERED); in handle_setup()
1174 ep = &udc->ep[tmp]; in handle_setup()
1175 if (tmp >= NUM_ENDPOINTS || (tmp && !ep->ep.desc)) in handle_setup()
1180 if (!ep->is_in) in handle_setup()
1182 } else if (ep->is_in) in handle_setup()
1185 PACKET("get %s status\n", ep->ep.name); in handle_setup()
1186 if (__raw_readl(ep->creg) & AT91_UDP_FORCESTALL) in handle_setup()
1197 ep = &udc->ep[tmp]; in handle_setup()
1200 if (!ep->ep.desc || ep->is_iso) in handle_setup()
1203 if (!ep->is_in) in handle_setup()
1205 } else if (ep->is_in) in handle_setup()
1208 tmp = __raw_readl(ep->creg); in handle_setup()
1211 __raw_writel(tmp, ep->creg); in handle_setup()
1216 ep = &udc->ep[tmp]; in handle_setup()
1221 if (!ep->ep.desc || ep->is_iso) in handle_setup()
1224 if (!ep->is_in) in handle_setup()
1226 } else if (ep->is_in) in handle_setup()
1229 at91_udp_write(udc, AT91_UDP_RST_EP, ep->int_mask); in handle_setup()
1231 tmp = __raw_readl(ep->creg); in handle_setup()
1234 __raw_writel(tmp, ep->creg); in handle_setup()
1235 if (!list_empty(&ep->queue)) in handle_setup()
1245 if (udc->driver) { in handle_setup()
1246 spin_unlock(&udc->lock); in handle_setup()
1247 status = udc->driver->setup(&udc->gadget, &pkt.r); in handle_setup()
1248 spin_lock(&udc->lock); in handle_setup()
1251 status = -ENODEV; in handle_setup()
1258 udc->req_pending = 0; in handle_setup()
1268 udc->req_pending = 0; in handle_setup()
1273 struct at91_ep *ep0 = &udc->ep[0]; in handle_ep0()
1274 u32 __iomem *creg = ep0->creg; in handle_ep0()
1279 nuke(ep0, -EPROTO); in handle_ep0()
1280 udc->req_pending = 0; in handle_ep0()
1289 udc->req_pending = 0; in handle_ep0()
1294 if (list_empty(&ep0->queue)) in handle_ep0()
1297 req = list_entry(ep0->queue.next, struct at91_request, queue); in handle_ep0()
1305 if (req && ep0->is_in) { in handle_ep0()
1307 udc->req_pending = 0; in handle_ep0()
1311 * - last IN DATA packet (including GET_STATUS) in handle_ep0()
1312 * - IN/STATUS for OUT DATA in handle_ep0()
1313 * - IN/STATUS for any zero-length DATA stage in handle_ep0()
1318 udc->req_pending = 0; in handle_ep0()
1325 if (udc->wait_for_addr_ack) { in handle_ep0()
1329 AT91_UDP_FEN | udc->addr); in handle_ep0()
1332 if (udc->addr) in handle_ep0()
1336 udc->wait_for_addr_ack = 0; in handle_ep0()
1337 VDBG("address %d\n", udc->addr); in handle_ep0()
1348 if (!ep0->is_in) { in handle_ep0()
1357 udc->req_pending = 0; in handle_ep0()
1359 } else if (udc->req_pending) { in handle_ep0()
1362 * "deferred response" mode for control-OUT in handle_ep0()
1363 * transfers. (For control-IN it's fine.) in handle_ep0()
1372 * would almost be a non-deferred response, in handle_ep0()
1377 DBG("no control-OUT deferred responses!\n"); in handle_ep0()
1379 udc->req_pending = 0; in handle_ep0()
1382 /* STATUS stage for control-IN; ack. */ in handle_ep0()
1401 spin_lock_irqsave(&udc->lock, flags); in at91_udc_irq()
1403 if (!udc->clocked) { in at91_udc_irq()
1408 while (rescans--) { in at91_udc_irq()
1424 udc->addr = 0; in at91_udc_irq()
1430 udc->gadget.speed = USB_SPEED_FULL; in at91_udc_irq()
1431 udc->suspended = 0; in at91_udc_irq()
1447 if (udc->suspended) in at91_udc_irq()
1449 udc->suspended = 1; in at91_udc_irq()
1452 * NOTE: when suspending a VBUS-powered device, the in at91_udc_irq()
1455 * 500uA power (2500uA for some high-power configs). in at91_udc_irq()
1457 if (udc->driver && udc->driver->suspend) { in at91_udc_irq()
1458 spin_unlock(&udc->lock); in at91_udc_irq()
1459 udc->driver->suspend(&udc->gadget); in at91_udc_irq()
1460 spin_lock(&udc->lock); in at91_udc_irq()
1469 if (!udc->suspended) in at91_udc_irq()
1471 udc->suspended = 0; in at91_udc_irq()
1474 * NOTE: for a VBUS-powered device, the gadget driver in at91_udc_irq()
1478 if (udc->driver && udc->driver->resume) { in at91_udc_irq()
1479 spin_unlock(&udc->lock); in at91_udc_irq()
1480 udc->driver->resume(&udc->gadget); in at91_udc_irq()
1481 spin_lock(&udc->lock); in at91_udc_irq()
1488 struct at91_ep *ep = &udc->ep[1]; in at91_udc_irq()
1504 spin_unlock_irqrestore(&udc->lock, flags); in at91_udc_irq()
1509 /*-------------------------------------------------------------------------*/
1513 value ^= udc->board.vbus_active_low; in at91_vbus_update()
1514 if (value != udc->vbus) in at91_vbus_update()
1515 at91_vbus_session(&udc->gadget, value); in at91_vbus_update()
1524 at91_vbus_update(udc, gpio_get_value(udc->board.vbus_pin)); in at91_vbus_irq()
1534 at91_vbus_update(udc, gpio_get_value_cansleep(udc->board.vbus_pin)); in at91_vbus_timer_work()
1536 if (!timer_pending(&udc->vbus_timer)) in at91_vbus_timer_work()
1537 mod_timer(&udc->vbus_timer, jiffies + VBUS_POLL_TIMEOUT); in at91_vbus_timer_work()
1549 schedule_work(&udc->vbus_timer_work); in at91_vbus_timer()
1558 udc->driver = driver; in at91_start()
1559 udc->gadget.dev.of_node = udc->pdev->dev.of_node; in at91_start()
1560 udc->enabled = 1; in at91_start()
1561 udc->gadget.is_selfpowered = 1; in at91_start()
1572 spin_lock_irqsave(&udc->lock, flags); in at91_stop()
1573 udc->enabled = 0; in at91_stop()
1575 spin_unlock_irqrestore(&udc->lock, flags); in at91_stop()
1577 udc->driver = NULL; in at91_stop()
1582 /*-------------------------------------------------------------------------*/
1590 spin_lock_irqsave(&udc->lock, flags); in at91udc_shutdown()
1592 spin_unlock_irqrestore(&udc->lock, flags); in at91udc_shutdown()
1602 ep = &udc->ep[i]; in at91rm9200_udc_init()
1607 ep->maxpacket = 8; in at91rm9200_udc_init()
1610 ep->maxpacket = 64; in at91rm9200_udc_init()
1613 ep->maxpacket = 256; in at91rm9200_udc_init()
1618 if (!gpio_is_valid(udc->board.pullup_pin)) { in at91rm9200_udc_init()
1620 return -ENODEV; in at91rm9200_udc_init()
1623 ret = devm_gpio_request(&udc->pdev->dev, udc->board.pullup_pin, in at91rm9200_udc_init()
1630 gpio_direction_output(udc->board.pullup_pin, in at91rm9200_udc_init()
1631 udc->board.pullup_active_low); in at91rm9200_udc_init()
1638 int active = !udc->board.pullup_active_low; in at91rm9200_udc_pullup()
1641 gpio_set_value(udc->board.pullup_pin, active); in at91rm9200_udc_pullup()
1643 gpio_set_value(udc->board.pullup_pin, !active); in at91rm9200_udc_pullup()
1657 ep = &udc->ep[i]; in at91sam9260_udc_init()
1661 ep->maxpacket = 64; in at91sam9260_udc_init()
1664 ep->maxpacket = 512; in at91sam9260_udc_init()
1695 ep = &udc->ep[i]; in at91sam9261_udc_init()
1699 ep->maxpacket = 8; in at91sam9261_udc_init()
1702 ep->maxpacket = 64; in at91sam9261_udc_init()
1705 ep->maxpacket = 256; in at91sam9261_udc_init()
1710 udc->matrix = syscon_regmap_lookup_by_phandle(udc->pdev->dev.of_node, in at91sam9261_udc_init()
1712 return PTR_ERR_OR_ZERO(udc->matrix); in at91sam9261_udc_init()
1722 regmap_update_bits(udc->matrix, AT91SAM9261_MATRIX_USBPUCR, in at91sam9261_udc_pullup()
1737 ep = &udc->ep[i]; in at91sam9263_udc_init()
1744 ep->maxpacket = 64; in at91sam9263_udc_init()
1748 ep->maxpacket = 256; in at91sam9263_udc_init()
1763 .compatible = "atmel,at91rm9200-udc",
1767 .compatible = "atmel,at91sam9260-udc",
1771 .compatible = "atmel,at91sam9261-udc",
1775 .compatible = "atmel,at91sam9263-udc",
1784 struct at91_udc_data *board = &udc->board; in at91udc_of_init()
1789 if (of_property_read_u32(np, "atmel,vbus-polled", &val) == 0) in at91udc_of_init()
1790 board->vbus_polled = 1; in at91udc_of_init()
1792 board->vbus_pin = of_get_named_gpio_flags(np, "atmel,vbus-gpio", 0, in at91udc_of_init()
1794 board->vbus_active_low = (flags & OF_GPIO_ACTIVE_LOW) ? 1 : 0; in at91udc_of_init()
1796 board->pullup_pin = of_get_named_gpio_flags(np, "atmel,pullup-gpio", 0, in at91udc_of_init()
1799 board->pullup_active_low = (flags & OF_GPIO_ACTIVE_LOW) ? 1 : 0; in at91udc_of_init()
1803 udc->caps = match->data; in at91udc_of_init()
1808 struct device *dev = &pdev->dev; in at91udc_probe()
1816 return -ENOMEM; in at91udc_probe()
1819 udc->gadget.dev.parent = dev; in at91udc_probe()
1820 at91udc_of_init(udc, pdev->dev.of_node); in at91udc_probe()
1821 udc->pdev = pdev; in at91udc_probe()
1822 udc->enabled = 0; in at91udc_probe()
1823 spin_lock_init(&udc->lock); in at91udc_probe()
1825 udc->gadget.ops = &at91_udc_ops; in at91udc_probe()
1826 udc->gadget.ep0 = &udc->ep[0].ep; in at91udc_probe()
1827 udc->gadget.name = driver_name; in at91udc_probe()
1828 udc->gadget.dev.init_name = "gadget"; in at91udc_probe()
1831 ep = &udc->ep[i]; in at91udc_probe()
1832 ep->ep.name = ep_info[i].name; in at91udc_probe()
1833 ep->ep.caps = ep_info[i].caps; in at91udc_probe()
1834 ep->ep.ops = &at91_ep_ops; in at91udc_probe()
1835 ep->udc = udc; in at91udc_probe()
1836 ep->int_mask = BIT(i); in at91udc_probe()
1838 ep->is_pingpong = 1; in at91udc_probe()
1841 udc->udp_baseaddr = devm_platform_ioremap_resource(pdev, 0); in at91udc_probe()
1842 if (IS_ERR(udc->udp_baseaddr)) in at91udc_probe()
1843 return PTR_ERR(udc->udp_baseaddr); in at91udc_probe()
1845 if (udc->caps && udc->caps->init) { in at91udc_probe()
1846 retval = udc->caps->init(udc); in at91udc_probe()
1854 udc->iclk = devm_clk_get(dev, "pclk"); in at91udc_probe()
1855 if (IS_ERR(udc->iclk)) in at91udc_probe()
1856 return PTR_ERR(udc->iclk); in at91udc_probe()
1858 udc->fclk = devm_clk_get(dev, "hclk"); in at91udc_probe()
1859 if (IS_ERR(udc->fclk)) in at91udc_probe()
1860 return PTR_ERR(udc->fclk); in at91udc_probe()
1863 clk_set_rate(udc->fclk, 48000000); in at91udc_probe()
1864 retval = clk_prepare(udc->fclk); in at91udc_probe()
1868 retval = clk_prepare_enable(udc->iclk); in at91udc_probe()
1874 /* Clear all pending interrupts - UDP may be used by bootloader. */ in at91udc_probe()
1876 clk_disable(udc->iclk); in at91udc_probe()
1879 udc->udp_irq = platform_get_irq(pdev, 0); in at91udc_probe()
1880 retval = devm_request_irq(dev, udc->udp_irq, at91_udc_irq, 0, in at91udc_probe()
1883 DBG("request irq %d failed\n", udc->udp_irq); in at91udc_probe()
1887 if (gpio_is_valid(udc->board.vbus_pin)) { in at91udc_probe()
1888 retval = devm_gpio_request(dev, udc->board.vbus_pin, in at91udc_probe()
1895 gpio_direction_input(udc->board.vbus_pin); in at91udc_probe()
1898 * Get the initial state of VBUS - we cannot expect in at91udc_probe()
1901 udc->vbus = gpio_get_value_cansleep(udc->board.vbus_pin) ^ in at91udc_probe()
1902 udc->board.vbus_active_low; in at91udc_probe()
1904 if (udc->board.vbus_polled) { in at91udc_probe()
1905 INIT_WORK(&udc->vbus_timer_work, at91_vbus_timer_work); in at91udc_probe()
1906 timer_setup(&udc->vbus_timer, at91_vbus_timer, 0); in at91udc_probe()
1907 mod_timer(&udc->vbus_timer, in at91udc_probe()
1911 gpio_to_irq(udc->board.vbus_pin), in at91udc_probe()
1915 udc->board.vbus_pin); in at91udc_probe()
1920 DBG("no VBUS detection, assuming always-on\n"); in at91udc_probe()
1921 udc->vbus = 1; in at91udc_probe()
1923 retval = usb_add_gadget_udc(dev, &udc->gadget); in at91udc_probe()
1934 clk_unprepare(udc->iclk); in at91udc_probe()
1936 clk_unprepare(udc->fclk); in at91udc_probe()
1950 usb_del_gadget_udc(&udc->gadget); in at91udc_remove()
1951 if (udc->driver) in at91udc_remove()
1952 return -EBUSY; in at91udc_remove()
1954 spin_lock_irqsave(&udc->lock, flags); in at91udc_remove()
1956 spin_unlock_irqrestore(&udc->lock, flags); in at91udc_remove()
1958 device_init_wakeup(&pdev->dev, 0); in at91udc_remove()
1960 clk_unprepare(udc->fclk); in at91udc_remove()
1961 clk_unprepare(udc->iclk); in at91udc_remove()
1970 int wake = udc->driver && device_may_wakeup(&pdev->dev); in at91udc_suspend()
1978 if ((!udc->suspended && udc->addr) in at91udc_suspend()
1981 spin_lock_irqsave(&udc->lock, flags); in at91udc_suspend()
1984 spin_unlock_irqrestore(&udc->lock, flags); in at91udc_suspend()
1986 enable_irq_wake(udc->udp_irq); in at91udc_suspend()
1988 udc->active_suspend = wake; in at91udc_suspend()
1989 if (gpio_is_valid(udc->board.vbus_pin) && !udc->board.vbus_polled && wake) in at91udc_suspend()
1990 enable_irq_wake(udc->board.vbus_pin); in at91udc_suspend()
1999 if (gpio_is_valid(udc->board.vbus_pin) && !udc->board.vbus_polled && in at91udc_resume()
2000 udc->active_suspend) in at91udc_resume()
2001 disable_irq_wake(udc->board.vbus_pin); in at91udc_resume()
2004 if (udc->active_suspend) in at91udc_resume()
2005 disable_irq_wake(udc->udp_irq); in at91udc_resume()
2007 spin_lock_irqsave(&udc->lock, flags); in at91udc_resume()
2009 spin_unlock_irqrestore(&udc->lock, flags); in at91udc_resume()