2 * Copyright 2011, Marvell Semiconductor Inc.
3 * Lei Wen <leiwen@marvell.com>
5 * SPDX-License-Identifier: GPL-2.0+
7 * Back ported to the 8xx platform (from the 8260 platform) by
8 * Murray.Jensen@cmst.csiro.au, 27-Jan-01.
16 #include <asm/byteorder.h>
17 #include <asm/errno.h>
19 #include <asm/unaligned.h>
20 #include <linux/types.h>
21 #include <linux/usb/ch9.h>
22 #include <linux/usb/gadget.h>
23 #include <usb/ci_udc.h>
24 #include "../host/ehci.h"
28 * Check if the system has too long cachelines. If the cachelines are
29 * longer then 128b, the driver will not be able flush/invalidate data
30 * cache over separate QH entries. We use 128b because one QH entry is
31 * 64b long and there are always two QH list entries for each endpoint.
33 #if ARCH_DMA_MINALIGN > 128
34 #error This driver can not work on systems with caches longer than 128b
38 #define DBG(x...) do {} while (0)
40 #define DBG(x...) printf(x)
41 static const char *reqname(unsigned r)
44 case USB_REQ_GET_STATUS: return "GET_STATUS";
45 case USB_REQ_CLEAR_FEATURE: return "CLEAR_FEATURE";
46 case USB_REQ_SET_FEATURE: return "SET_FEATURE";
47 case USB_REQ_SET_ADDRESS: return "SET_ADDRESS";
48 case USB_REQ_GET_DESCRIPTOR: return "GET_DESCRIPTOR";
49 case USB_REQ_SET_DESCRIPTOR: return "SET_DESCRIPTOR";
50 case USB_REQ_GET_CONFIGURATION: return "GET_CONFIGURATION";
51 case USB_REQ_SET_CONFIGURATION: return "SET_CONFIGURATION";
52 case USB_REQ_GET_INTERFACE: return "GET_INTERFACE";
53 case USB_REQ_SET_INTERFACE: return "SET_INTERFACE";
54 default: return "*UNKNOWN*";
59 static struct usb_endpoint_descriptor ep0_out_desc = {
60 .bLength = sizeof(struct usb_endpoint_descriptor),
61 .bDescriptorType = USB_DT_ENDPOINT,
62 .bEndpointAddress = 0,
63 .bmAttributes = USB_ENDPOINT_XFER_CONTROL,
66 static struct usb_endpoint_descriptor ep0_in_desc = {
67 .bLength = sizeof(struct usb_endpoint_descriptor),
68 .bDescriptorType = USB_DT_ENDPOINT,
69 .bEndpointAddress = USB_DIR_IN,
70 .bmAttributes = USB_ENDPOINT_XFER_CONTROL,
73 static int ci_pullup(struct usb_gadget *gadget, int is_on);
74 static int ci_ep_enable(struct usb_ep *ep,
75 const struct usb_endpoint_descriptor *desc);
76 static int ci_ep_disable(struct usb_ep *ep);
77 static int ci_ep_queue(struct usb_ep *ep,
78 struct usb_request *req, gfp_t gfp_flags);
79 static struct usb_request *
80 ci_ep_alloc_request(struct usb_ep *ep, unsigned int gfp_flags);
81 static void ci_ep_free_request(struct usb_ep *ep, struct usb_request *_req);
83 static struct usb_gadget_ops ci_udc_ops = {
87 static struct usb_ep_ops ci_ep_ops = {
88 .enable = ci_ep_enable,
89 .disable = ci_ep_disable,
91 .alloc_request = ci_ep_alloc_request,
92 .free_request = ci_ep_free_request,
95 /* Init values for USB endpoints. */
96 static const struct usb_ep ci_ep_init[2] = {
102 [1] = { /* EP 1..n */
109 static struct ci_drv controller = {
118 * ci_get_qh() - return queue head for endpoint
119 * @ep_num: Endpoint number
120 * @dir_in: Direction of the endpoint (IN = 1, OUT = 0)
122 * This function returns the QH associated with particular endpoint
123 * and it's direction.
125 static struct ept_queue_head *ci_get_qh(int ep_num, int dir_in)
127 return &controller.epts[(ep_num * 2) + dir_in];
131 * ci_get_qtd() - return queue item for endpoint
132 * @ep_num: Endpoint number
133 * @dir_in: Direction of the endpoint (IN = 1, OUT = 0)
135 * This function returns the QH associated with particular endpoint
136 * and it's direction.
138 static struct ept_queue_item *ci_get_qtd(int ep_num, int dir_in)
140 return controller.items[(ep_num * 2) + dir_in];
144 * ci_flush_qh - flush cache over queue head
145 * @ep_num: Endpoint number
147 * This function flushes cache over QH for particular endpoint.
149 static void ci_flush_qh(int ep_num)
151 struct ept_queue_head *head = ci_get_qh(ep_num, 0);
152 const uint32_t start = (uint32_t)head;
153 const uint32_t end = start + 2 * sizeof(*head);
155 flush_dcache_range(start, end);
159 * ci_invalidate_qh - invalidate cache over queue head
160 * @ep_num: Endpoint number
162 * This function invalidates cache over QH for particular endpoint.
164 static void ci_invalidate_qh(int ep_num)
166 struct ept_queue_head *head = ci_get_qh(ep_num, 0);
167 uint32_t start = (uint32_t)head;
168 uint32_t end = start + 2 * sizeof(*head);
170 invalidate_dcache_range(start, end);
174 * ci_flush_qtd - flush cache over queue item
175 * @ep_num: Endpoint number
177 * This function flushes cache over qTD pair for particular endpoint.
179 static void ci_flush_qtd(int ep_num)
181 struct ept_queue_item *item = ci_get_qtd(ep_num, 0);
182 const uint32_t start = (uint32_t)item;
183 const uint32_t end_raw = start + 2 * sizeof(*item);
184 const uint32_t end = roundup(end_raw, ARCH_DMA_MINALIGN);
186 flush_dcache_range(start, end);
190 * ci_invalidate_qtd - invalidate cache over queue item
191 * @ep_num: Endpoint number
193 * This function invalidates cache over qTD pair for particular endpoint.
195 static void ci_invalidate_qtd(int ep_num)
197 struct ept_queue_item *item = ci_get_qtd(ep_num, 0);
198 const uint32_t start = (uint32_t)item;
199 const uint32_t end_raw = start + 2 * sizeof(*item);
200 const uint32_t end = roundup(end_raw, ARCH_DMA_MINALIGN);
202 invalidate_dcache_range(start, end);
205 static struct usb_request *
206 ci_ep_alloc_request(struct usb_ep *ep, unsigned int gfp_flags)
208 struct ci_req *ci_req;
210 ci_req = memalign(ARCH_DMA_MINALIGN, sizeof(*ci_req));
214 INIT_LIST_HEAD(&ci_req->queue);
220 static void ci_ep_free_request(struct usb_ep *ep, struct usb_request *req)
222 struct ci_req *ci_req;
224 ci_req = container_of(req, struct ci_req, req);
230 static void ep_enable(int num, int in, int maxpacket)
232 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
235 n = readl(&udc->epctrl[num]);
237 n |= (CTRL_TXE | CTRL_TXR | CTRL_TXT_BULK);
239 n |= (CTRL_RXE | CTRL_RXR | CTRL_RXT_BULK);
242 struct ept_queue_head *head = ci_get_qh(num, in);
244 head->config = CONFIG_MAX_PKT(maxpacket) | CONFIG_ZLT;
247 writel(n, &udc->epctrl[num]);
250 static int ci_ep_enable(struct usb_ep *ep,
251 const struct usb_endpoint_descriptor *desc)
253 struct ci_ep *ci_ep = container_of(ep, struct ci_ep, ep);
255 num = desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
256 in = (desc->bEndpointAddress & USB_DIR_IN) != 0;
260 int max = get_unaligned_le16(&desc->wMaxPacketSize);
262 if ((max > 64) && (controller.gadget.speed == USB_SPEED_FULL))
264 if (ep->maxpacket != max) {
265 DBG("%s: from %d to %d\n", __func__,
270 ep_enable(num, in, ep->maxpacket);
271 DBG("%s: num=%d maxpacket=%d\n", __func__, num, ep->maxpacket);
275 static int ci_ep_disable(struct usb_ep *ep)
277 struct ci_ep *ci_ep = container_of(ep, struct ci_ep, ep);
283 static int ci_bounce(struct ci_req *ci_req, int in)
285 struct usb_request *req = &ci_req->req;
286 uint32_t addr = (uint32_t)req->buf;
288 uint32_t aligned_used_len;
290 /* Input buffer address is not aligned. */
291 if (addr & (ARCH_DMA_MINALIGN - 1))
294 /* Input buffer length is not aligned. */
295 if (req->length & (ARCH_DMA_MINALIGN - 1))
298 /* The buffer is well aligned, only flush cache. */
299 ci_req->hw_len = req->length;
300 ci_req->hw_buf = req->buf;
304 if (ci_req->b_buf && req->length > ci_req->b_len) {
308 if (!ci_req->b_buf) {
309 ci_req->b_len = roundup(req->length, ARCH_DMA_MINALIGN);
310 ci_req->b_buf = memalign(ARCH_DMA_MINALIGN, ci_req->b_len);
314 ci_req->hw_len = ci_req->b_len;
315 ci_req->hw_buf = ci_req->b_buf;
318 memcpy(ci_req->hw_buf, req->buf, req->length);
321 hwaddr = (uint32_t)ci_req->hw_buf;
322 aligned_used_len = roundup(req->length, ARCH_DMA_MINALIGN);
323 flush_dcache_range(hwaddr, hwaddr + aligned_used_len);
328 static void ci_debounce(struct ci_req *ci_req, int in)
330 struct usb_request *req = &ci_req->req;
331 uint32_t addr = (uint32_t)req->buf;
332 uint32_t hwaddr = (uint32_t)ci_req->hw_buf;
333 uint32_t aligned_used_len;
338 aligned_used_len = roundup(req->actual, ARCH_DMA_MINALIGN);
339 invalidate_dcache_range(hwaddr, hwaddr + aligned_used_len);
342 return; /* not a bounce */
344 memcpy(req->buf, ci_req->hw_buf, req->actual);
347 static void ci_ep_submit_next_request(struct ci_ep *ci_ep)
349 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
350 struct ept_queue_item *item;
351 struct ept_queue_head *head;
352 int bit, num, len, in;
353 struct ci_req *ci_req;
355 ci_ep->req_primed = true;
357 num = ci_ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
358 in = (ci_ep->desc->bEndpointAddress & USB_DIR_IN) != 0;
359 item = ci_get_qtd(num, in);
360 head = ci_get_qh(num, in);
362 ci_req = list_first_entry(&ci_ep->queue, struct ci_req, queue);
363 len = ci_req->req.length;
365 item->next = TERMINATE;
366 item->info = INFO_BYTES(len) | INFO_IOC | INFO_ACTIVE;
367 item->page0 = (uint32_t)ci_req->hw_buf;
368 item->page1 = ((uint32_t)ci_req->hw_buf & 0xfffff000) + 0x1000;
369 item->page2 = ((uint32_t)ci_req->hw_buf & 0xfffff000) + 0x2000;
370 item->page3 = ((uint32_t)ci_req->hw_buf & 0xfffff000) + 0x3000;
371 item->page4 = ((uint32_t)ci_req->hw_buf & 0xfffff000) + 0x4000;
374 head->next = (unsigned) item;
377 DBG("ept%d %s queue len %x, req %p, buffer %p\n",
378 num, in ? "in" : "out", len, ci_req, ci_req->hw_buf);
386 writel(bit, &udc->epprime);
389 static int ci_ep_queue(struct usb_ep *ep,
390 struct usb_request *req, gfp_t gfp_flags)
392 struct ci_ep *ci_ep = container_of(ep, struct ci_ep, ep);
393 struct ci_req *ci_req = container_of(req, struct ci_req, req);
395 int __maybe_unused num;
397 num = ci_ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
398 in = (ci_ep->desc->bEndpointAddress & USB_DIR_IN) != 0;
400 ret = ci_bounce(ci_req, in);
404 DBG("ept%d %s pre-queue req %p, buffer %p\n",
405 num, in ? "in" : "out", ci_req, ci_req->hw_buf);
406 list_add_tail(&ci_req->queue, &ci_ep->queue);
408 if (!ci_ep->req_primed)
409 ci_ep_submit_next_request(ci_ep);
414 static void handle_ep_complete(struct ci_ep *ep)
416 struct ept_queue_item *item;
418 struct ci_req *ci_req;
420 num = ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
421 in = (ep->desc->bEndpointAddress & USB_DIR_IN) != 0;
423 ep->desc = &ep0_out_desc;
424 item = ci_get_qtd(num, in);
425 ci_invalidate_qtd(num);
427 len = (item->info >> 16) & 0x7fff;
428 if (item->info & 0xff)
429 printf("EP%d/%s FAIL info=%x pg0=%x\n",
430 num, in ? "in" : "out", item->info, item->page0);
432 ci_req = list_first_entry(&ep->queue, struct ci_req, queue);
433 list_del_init(&ci_req->queue);
434 ep->req_primed = false;
436 if (!list_empty(&ep->queue))
437 ci_ep_submit_next_request(ep);
439 ci_req->req.actual = ci_req->req.length - len;
440 ci_debounce(ci_req, in);
442 DBG("ept%d %s req %p, complete %x\n",
443 num, in ? "in" : "out", ci_req, len);
444 ci_req->req.complete(&ep->ep, &ci_req->req);
446 ci_req->req.length = 0;
447 usb_ep_queue(&ep->ep, &ci_req->req, 0);
448 ep->desc = &ep0_in_desc;
452 #define SETUP(type, request) (((type) << 8) | (request))
454 static void handle_setup(void)
456 struct ci_ep *ci_ep = &controller.ep[0];
457 struct ci_req *ci_req;
458 struct usb_request *req;
459 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
460 struct ept_queue_head *head;
461 struct usb_ctrlrequest r;
463 int num, in, _num, _in, i;
466 ci_req = list_first_entry(&ci_ep->queue, struct ci_req, queue);
468 head = ci_get_qh(0, 0); /* EP0 OUT */
471 memcpy(&r, head->setup_data, sizeof(struct usb_ctrlrequest));
472 #ifdef CONFIG_CI_UDC_HAS_HOSTPC
473 writel(EPT_RX(0), &udc->epsetupstat);
475 writel(EPT_RX(0), &udc->epstat);
477 DBG("handle setup %s, %x, %x index %x value %x\n", reqname(r.bRequest),
478 r.bRequestType, r.bRequest, r.wIndex, r.wValue);
480 list_del_init(&ci_req->queue);
481 ci_ep->req_primed = false;
483 switch (SETUP(r.bRequestType, r.bRequest)) {
484 case SETUP(USB_RECIP_ENDPOINT, USB_REQ_CLEAR_FEATURE):
485 _num = r.wIndex & 15;
486 _in = !!(r.wIndex & 0x80);
488 if ((r.wValue == 0) && (r.wLength == 0)) {
490 for (i = 0; i < NUM_ENDPOINTS; i++) {
491 struct ci_ep *ep = &controller.ep[i];
495 num = ep->desc->bEndpointAddress
496 & USB_ENDPOINT_NUMBER_MASK;
497 in = (ep->desc->bEndpointAddress
499 if ((num == _num) && (in == _in)) {
500 ep_enable(num, in, ep->ep.maxpacket);
501 usb_ep_queue(controller.gadget.ep0,
509 case SETUP(USB_RECIP_DEVICE, USB_REQ_SET_ADDRESS):
511 * write address delayed (will take effect
512 * after the next IN txn)
514 writel((r.wValue << 25) | (1 << 24), &udc->devaddr);
516 usb_ep_queue(controller.gadget.ep0, req, 0);
519 case SETUP(USB_DIR_IN | USB_RECIP_DEVICE, USB_REQ_GET_STATUS):
521 buf = (char *)req->buf;
522 buf[0] = 1 << USB_DEVICE_SELF_POWERED;
524 usb_ep_queue(controller.gadget.ep0, req, 0);
527 /* pass request up to the gadget driver */
528 if (controller.driver)
529 status = controller.driver->setup(&controller.gadget, &r);
535 DBG("STALL reqname %s type %x value %x, index %x\n",
536 reqname(r.bRequest), r.bRequestType, r.wValue, r.wIndex);
537 writel((1<<16) | (1 << 0), &udc->epctrl[0]);
540 static void stop_activity(void)
543 struct ept_queue_head *head;
544 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
545 writel(readl(&udc->epcomp), &udc->epcomp);
546 #ifdef CONFIG_CI_UDC_HAS_HOSTPC
547 writel(readl(&udc->epsetupstat), &udc->epsetupstat);
549 writel(readl(&udc->epstat), &udc->epstat);
550 writel(0xffffffff, &udc->epflush);
552 /* error out any pending reqs */
553 for (i = 0; i < NUM_ENDPOINTS; i++) {
555 writel(0, &udc->epctrl[i]);
556 if (controller.ep[i].desc) {
557 num = controller.ep[i].desc->bEndpointAddress
558 & USB_ENDPOINT_NUMBER_MASK;
559 in = (controller.ep[i].desc->bEndpointAddress
561 head = ci_get_qh(num, in);
562 head->info = INFO_ACTIVE;
570 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
571 unsigned n = readl(&udc->usbsts);
572 writel(n, &udc->usbsts);
575 n &= (STS_SLI | STS_URI | STS_PCI | STS_UI | STS_UEI);
580 DBG("-- reset --\n");
584 DBG("-- suspend --\n");
588 int speed = USB_SPEED_FULL;
590 #ifdef CONFIG_CI_UDC_HAS_HOSTPC
591 bit = (readl(&udc->hostpc1_devlc) >> 25) & 3;
593 bit = (readl(&udc->portsc) >> 26) & 3;
595 DBG("-- portchange %x %s\n", bit, (bit == 2) ? "High" : "Full");
597 speed = USB_SPEED_HIGH;
600 controller.gadget.speed = speed;
601 for (i = 1; i < NUM_ENDPOINTS; i++) {
602 if (controller.ep[i].ep.maxpacket > max)
603 controller.ep[i].ep.maxpacket = max;
608 printf("<UEI %x>\n", readl(&udc->epcomp));
610 if ((n & STS_UI) || (n & STS_UEI)) {
611 #ifdef CONFIG_CI_UDC_HAS_HOSTPC
612 n = readl(&udc->epsetupstat);
614 n = readl(&udc->epstat);
619 n = readl(&udc->epcomp);
621 writel(n, &udc->epcomp);
623 for (i = 0; i < NUM_ENDPOINTS && n; i++) {
624 if (controller.ep[i].desc) {
625 num = controller.ep[i].desc->bEndpointAddress
626 & USB_ENDPOINT_NUMBER_MASK;
627 in = (controller.ep[i].desc->bEndpointAddress
629 bit = (in) ? EPT_TX(num) : EPT_RX(num);
631 handle_ep_complete(&controller.ep[i]);
637 int usb_gadget_handle_interrupts(void)
640 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
642 value = readl(&udc->usbsts);
649 static int ci_pullup(struct usb_gadget *gadget, int is_on)
651 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
654 writel(USBCMD_ITC(MICRO_8FRAME) | USBCMD_RST, &udc->usbcmd);
657 writel((unsigned)controller.epts, &udc->epinitaddr);
659 /* select DEVICE mode */
660 writel(USBMODE_DEVICE, &udc->usbmode);
662 writel(0xffffffff, &udc->epflush);
664 /* Turn on the USB connection by enabling the pullup resistor */
665 writel(USBCMD_ITC(MICRO_8FRAME) | USBCMD_RUN, &udc->usbcmd);
668 writel(USBCMD_FS2, &udc->usbcmd);
670 if (controller.driver)
671 controller.driver->disconnect(gadget);
677 void udc_disconnect(void)
679 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
682 writel(USBCMD_FS2, &udc->usbcmd);
684 if (controller.driver)
685 controller.driver->disconnect(&controller.gadget);
688 static int ci_udc_probe(void)
690 struct ept_queue_head *head;
694 const int num = 2 * NUM_ENDPOINTS;
696 const int eplist_min_align = 4096;
697 const int eplist_align = roundup(eplist_min_align, ARCH_DMA_MINALIGN);
698 const int eplist_raw_sz = num * sizeof(struct ept_queue_head);
699 const int eplist_sz = roundup(eplist_raw_sz, ARCH_DMA_MINALIGN);
701 const int ilist_align = roundup(ARCH_DMA_MINALIGN, 32);
702 const int ilist_ent_raw_sz = 2 * sizeof(struct ept_queue_item);
703 const int ilist_ent_sz = roundup(ilist_ent_raw_sz, ARCH_DMA_MINALIGN);
704 const int ilist_sz = NUM_ENDPOINTS * ilist_ent_sz;
706 /* The QH list must be aligned to 4096 bytes. */
707 controller.epts = memalign(eplist_align, eplist_sz);
708 if (!controller.epts)
710 memset(controller.epts, 0, eplist_sz);
713 * Each qTD item must be 32-byte aligned, each qTD touple must be
714 * cacheline aligned. There are two qTD items for each endpoint and
715 * only one of them is used for the endpoint at time, so we can group
718 controller.items_mem = memalign(ilist_align, ilist_sz);
719 if (!controller.items_mem) {
720 free(controller.epts);
723 memset(controller.items_mem, 0, ilist_sz);
725 for (i = 0; i < 2 * NUM_ENDPOINTS; i++) {
727 * Configure QH for each endpoint. The structure of the QH list
728 * is such that each two subsequent fields, N and N+1 where N is
729 * even, in the QH list represent QH for one endpoint. The Nth
730 * entry represents OUT configuration and the N+1th entry does
731 * represent IN configuration of the endpoint.
733 head = controller.epts + i;
735 head->config = CONFIG_MAX_PKT(EP0_MAX_PACKET_SIZE)
736 | CONFIG_ZLT | CONFIG_IOS;
738 head->config = CONFIG_MAX_PKT(EP_MAX_PACKET_SIZE)
740 head->next = TERMINATE;
743 imem = controller.items_mem + ((i >> 1) * ilist_ent_sz);
745 imem += sizeof(struct ept_queue_item);
747 controller.items[i] = (struct ept_queue_item *)imem;
755 INIT_LIST_HEAD(&controller.gadget.ep_list);
758 memcpy(&controller.ep[0].ep, &ci_ep_init[0], sizeof(*ci_ep_init));
759 controller.ep[0].desc = &ep0_in_desc;
760 INIT_LIST_HEAD(&controller.ep[0].queue);
761 controller.ep[0].req_primed = false;
762 controller.gadget.ep0 = &controller.ep[0].ep;
763 INIT_LIST_HEAD(&controller.gadget.ep0->ep_list);
766 for (i = 1; i < NUM_ENDPOINTS; i++) {
767 memcpy(&controller.ep[i].ep, &ci_ep_init[1],
768 sizeof(*ci_ep_init));
769 INIT_LIST_HEAD(&controller.ep[i].queue);
770 controller.ep[i].req_primed = false;
771 list_add_tail(&controller.ep[i].ep.ep_list,
772 &controller.gadget.ep_list);
778 int usb_gadget_register_driver(struct usb_gadget_driver *driver)
784 if (!driver->bind || !driver->setup || !driver->disconnect)
786 if (driver->speed != USB_SPEED_FULL && driver->speed != USB_SPEED_HIGH)
789 ret = usb_lowlevel_init(0, USB_INIT_DEVICE, (void **)&controller.ctrl);
793 ret = ci_udc_probe();
794 #if defined(CONFIG_USB_EHCI_MX6) || defined(CONFIG_USB_EHCI_MXS)
796 * FIXME: usb_lowlevel_init()->ehci_hcd_init() should be doing all
797 * HW-specific initialization, e.g. ULPI-vs-UTMI PHY selection
800 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
802 /* select ULPI phy */
803 writel(PTS(PTS_ENABLE) | PFSC, &udc->portsc);
807 ret = driver->bind(&controller.gadget);
809 DBG("driver->bind() returned %d\n", ret);
812 controller.driver = driver;
817 int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)