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_desc = {
60 .bLength = sizeof(struct usb_endpoint_descriptor),
61 .bDescriptorType = USB_DT_ENDPOINT,
62 .bEndpointAddress = USB_DIR_IN,
63 .bmAttributes = USB_ENDPOINT_XFER_CONTROL,
66 static int ci_pullup(struct usb_gadget *gadget, int is_on);
67 static int ci_ep_enable(struct usb_ep *ep,
68 const struct usb_endpoint_descriptor *desc);
69 static int ci_ep_disable(struct usb_ep *ep);
70 static int ci_ep_queue(struct usb_ep *ep,
71 struct usb_request *req, gfp_t gfp_flags);
72 static struct usb_request *
73 ci_ep_alloc_request(struct usb_ep *ep, unsigned int gfp_flags);
74 static void ci_ep_free_request(struct usb_ep *ep, struct usb_request *_req);
76 static struct usb_gadget_ops ci_udc_ops = {
80 static struct usb_ep_ops ci_ep_ops = {
81 .enable = ci_ep_enable,
82 .disable = ci_ep_disable,
84 .alloc_request = ci_ep_alloc_request,
85 .free_request = ci_ep_free_request,
88 /* Init values for USB endpoints. */
89 static const struct usb_ep ci_ep_init[2] = {
102 static struct ci_drv controller = {
111 * ci_get_qh() - return queue head for endpoint
112 * @ep_num: Endpoint number
113 * @dir_in: Direction of the endpoint (IN = 1, OUT = 0)
115 * This function returns the QH associated with particular endpoint
116 * and it's direction.
118 static struct ept_queue_head *ci_get_qh(int ep_num, int dir_in)
120 return &controller.epts[(ep_num * 2) + dir_in];
124 * ci_get_qtd() - return queue item for endpoint
125 * @ep_num: Endpoint number
126 * @dir_in: Direction of the endpoint (IN = 1, OUT = 0)
128 * This function returns the QH associated with particular endpoint
129 * and it's direction.
131 static struct ept_queue_item *ci_get_qtd(int ep_num, int dir_in)
133 return controller.items[(ep_num * 2) + dir_in];
137 * ci_flush_qh - flush cache over queue head
138 * @ep_num: Endpoint number
140 * This function flushes cache over QH for particular endpoint.
142 static void ci_flush_qh(int ep_num)
144 struct ept_queue_head *head = ci_get_qh(ep_num, 0);
145 const uint32_t start = (uint32_t)head;
146 const uint32_t end = start + 2 * sizeof(*head);
148 flush_dcache_range(start, end);
152 * ci_invalidate_qh - invalidate cache over queue head
153 * @ep_num: Endpoint number
155 * This function invalidates cache over QH for particular endpoint.
157 static void ci_invalidate_qh(int ep_num)
159 struct ept_queue_head *head = ci_get_qh(ep_num, 0);
160 uint32_t start = (uint32_t)head;
161 uint32_t end = start + 2 * sizeof(*head);
163 invalidate_dcache_range(start, end);
167 * ci_flush_qtd - flush cache over queue item
168 * @ep_num: Endpoint number
170 * This function flushes cache over qTD pair for particular endpoint.
172 static void ci_flush_qtd(int ep_num)
174 struct ept_queue_item *item = ci_get_qtd(ep_num, 0);
175 const uint32_t start = (uint32_t)item;
176 const uint32_t end_raw = start + 2 * sizeof(*item);
177 const uint32_t end = roundup(end_raw, ARCH_DMA_MINALIGN);
179 flush_dcache_range(start, end);
183 * ci_invalidate_qtd - invalidate cache over queue item
184 * @ep_num: Endpoint number
186 * This function invalidates cache over qTD pair for particular endpoint.
188 static void ci_invalidate_qtd(int ep_num)
190 struct ept_queue_item *item = ci_get_qtd(ep_num, 0);
191 const uint32_t start = (uint32_t)item;
192 const uint32_t end_raw = start + 2 * sizeof(*item);
193 const uint32_t end = roundup(end_raw, ARCH_DMA_MINALIGN);
195 invalidate_dcache_range(start, end);
198 static struct usb_request *
199 ci_ep_alloc_request(struct usb_ep *ep, unsigned int gfp_flags)
201 struct ci_ep *ci_ep = container_of(ep, struct ci_ep, ep);
203 struct ci_req *ci_req;
205 num = ci_ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
206 if (num == 0 && controller.ep0_req)
207 return &controller.ep0_req->req;
209 ci_req = memalign(ARCH_DMA_MINALIGN, sizeof(*ci_req));
213 INIT_LIST_HEAD(&ci_req->queue);
217 controller.ep0_req = ci_req;
222 static void ci_ep_free_request(struct usb_ep *ep, struct usb_request *req)
224 struct ci_ep *ci_ep = container_of(ep, struct ci_ep, ep);
225 struct ci_req *ci_req = container_of(req, struct ci_req, req);
228 num = ci_ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
230 controller.ep0_req = 0;
237 static void ep_enable(int num, int in, int maxpacket)
239 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
242 n = readl(&udc->epctrl[num]);
244 n |= (CTRL_TXE | CTRL_TXR | CTRL_TXT_BULK);
246 n |= (CTRL_RXE | CTRL_RXR | CTRL_RXT_BULK);
249 struct ept_queue_head *head = ci_get_qh(num, in);
251 head->config = CONFIG_MAX_PKT(maxpacket) | CONFIG_ZLT;
254 writel(n, &udc->epctrl[num]);
257 static int ci_ep_enable(struct usb_ep *ep,
258 const struct usb_endpoint_descriptor *desc)
260 struct ci_ep *ci_ep = container_of(ep, struct ci_ep, ep);
262 num = desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
263 in = (desc->bEndpointAddress & USB_DIR_IN) != 0;
267 int max = get_unaligned_le16(&desc->wMaxPacketSize);
269 if ((max > 64) && (controller.gadget.speed == USB_SPEED_FULL))
271 if (ep->maxpacket != max) {
272 DBG("%s: from %d to %d\n", __func__,
277 ep_enable(num, in, ep->maxpacket);
278 DBG("%s: num=%d maxpacket=%d\n", __func__, num, ep->maxpacket);
282 static int ci_ep_disable(struct usb_ep *ep)
284 struct ci_ep *ci_ep = container_of(ep, struct ci_ep, ep);
290 static int ci_bounce(struct ci_req *ci_req, int in)
292 struct usb_request *req = &ci_req->req;
293 uint32_t addr = (uint32_t)req->buf;
295 uint32_t aligned_used_len;
297 /* Input buffer address is not aligned. */
298 if (addr & (ARCH_DMA_MINALIGN - 1))
301 /* Input buffer length is not aligned. */
302 if (req->length & (ARCH_DMA_MINALIGN - 1))
305 /* The buffer is well aligned, only flush cache. */
306 ci_req->hw_len = req->length;
307 ci_req->hw_buf = req->buf;
311 if (ci_req->b_buf && req->length > ci_req->b_len) {
315 if (!ci_req->b_buf) {
316 ci_req->b_len = roundup(req->length, ARCH_DMA_MINALIGN);
317 ci_req->b_buf = memalign(ARCH_DMA_MINALIGN, ci_req->b_len);
321 ci_req->hw_len = ci_req->b_len;
322 ci_req->hw_buf = ci_req->b_buf;
325 memcpy(ci_req->hw_buf, req->buf, req->length);
328 hwaddr = (uint32_t)ci_req->hw_buf;
329 aligned_used_len = roundup(req->length, ARCH_DMA_MINALIGN);
330 flush_dcache_range(hwaddr, hwaddr + aligned_used_len);
335 static void ci_debounce(struct ci_req *ci_req, int in)
337 struct usb_request *req = &ci_req->req;
338 uint32_t addr = (uint32_t)req->buf;
339 uint32_t hwaddr = (uint32_t)ci_req->hw_buf;
340 uint32_t aligned_used_len;
345 aligned_used_len = roundup(req->actual, ARCH_DMA_MINALIGN);
346 invalidate_dcache_range(hwaddr, hwaddr + aligned_used_len);
349 return; /* not a bounce */
351 memcpy(req->buf, ci_req->hw_buf, req->actual);
354 static void ci_ep_submit_next_request(struct ci_ep *ci_ep)
356 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
357 struct ept_queue_item *item;
358 struct ept_queue_head *head;
359 int bit, num, len, in;
360 struct ci_req *ci_req;
362 ci_ep->req_primed = true;
364 num = ci_ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
365 in = (ci_ep->desc->bEndpointAddress & USB_DIR_IN) != 0;
366 item = ci_get_qtd(num, in);
367 head = ci_get_qh(num, in);
369 ci_req = list_first_entry(&ci_ep->queue, struct ci_req, queue);
370 len = ci_req->req.length;
372 item->next = TERMINATE;
373 item->info = INFO_BYTES(len) | INFO_IOC | INFO_ACTIVE;
374 item->page0 = (uint32_t)ci_req->hw_buf;
375 item->page1 = ((uint32_t)ci_req->hw_buf & 0xfffff000) + 0x1000;
376 item->page2 = ((uint32_t)ci_req->hw_buf & 0xfffff000) + 0x2000;
377 item->page3 = ((uint32_t)ci_req->hw_buf & 0xfffff000) + 0x3000;
378 item->page4 = ((uint32_t)ci_req->hw_buf & 0xfffff000) + 0x4000;
381 head->next = (unsigned) item;
384 DBG("ept%d %s queue len %x, req %p, buffer %p\n",
385 num, in ? "in" : "out", len, ci_req, ci_req->hw_buf);
393 writel(bit, &udc->epprime);
396 static int ci_ep_queue(struct usb_ep *ep,
397 struct usb_request *req, gfp_t gfp_flags)
399 struct ci_ep *ci_ep = container_of(ep, struct ci_ep, ep);
400 struct ci_req *ci_req = container_of(req, struct ci_req, req);
402 int __maybe_unused num;
404 num = ci_ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
405 in = (ci_ep->desc->bEndpointAddress & USB_DIR_IN) != 0;
407 if (!num && ci_ep->req_primed) {
409 * The flipping of ep0 between IN and OUT relies on
410 * ci_ep_queue consuming the current IN/OUT setting
411 * immediately. If this is deferred to a later point when the
412 * req is pulled out of ci_req->queue, then the IN/OUT setting
413 * may have been changed since the req was queued, and state
414 * will get out of sync. This condition doesn't occur today,
415 * but could if bugs were introduced later, and this error
416 * check will save a lot of debugging time.
418 printf("%s: ep0 transaction already in progress\n", __func__);
422 ret = ci_bounce(ci_req, in);
426 DBG("ept%d %s pre-queue req %p, buffer %p\n",
427 num, in ? "in" : "out", ci_req, ci_req->hw_buf);
428 list_add_tail(&ci_req->queue, &ci_ep->queue);
430 if (!ci_ep->req_primed)
431 ci_ep_submit_next_request(ci_ep);
436 static void flip_ep0_direction(void)
438 if (ep0_desc.bEndpointAddress == USB_DIR_IN) {
439 DBG("%s: Flipping ep0 ot OUT\n", __func__);
440 ep0_desc.bEndpointAddress = 0;
442 DBG("%s: Flipping ep0 ot IN\n", __func__);
443 ep0_desc.bEndpointAddress = USB_DIR_IN;
447 static void handle_ep_complete(struct ci_ep *ep)
449 struct ept_queue_item *item;
451 struct ci_req *ci_req;
453 num = ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
454 in = (ep->desc->bEndpointAddress & USB_DIR_IN) != 0;
455 item = ci_get_qtd(num, in);
456 ci_invalidate_qtd(num);
458 len = (item->info >> 16) & 0x7fff;
459 if (item->info & 0xff)
460 printf("EP%d/%s FAIL info=%x pg0=%x\n",
461 num, in ? "in" : "out", item->info, item->page0);
463 ci_req = list_first_entry(&ep->queue, struct ci_req, queue);
464 list_del_init(&ci_req->queue);
465 ep->req_primed = false;
467 if (!list_empty(&ep->queue))
468 ci_ep_submit_next_request(ep);
470 ci_req->req.actual = ci_req->req.length - len;
471 ci_debounce(ci_req, in);
473 DBG("ept%d %s req %p, complete %x\n",
474 num, in ? "in" : "out", ci_req, len);
475 if (num != 0 || controller.ep0_data_phase)
476 ci_req->req.complete(&ep->ep, &ci_req->req);
477 if (num == 0 && controller.ep0_data_phase) {
479 * Data Stage is complete, so flip ep0 dir for Status Stage,
480 * which always transfers a packet in the opposite direction.
482 DBG("%s: flip ep0 dir for Status Stage\n", __func__);
483 flip_ep0_direction();
484 controller.ep0_data_phase = false;
485 ci_req->req.length = 0;
486 usb_ep_queue(&ep->ep, &ci_req->req, 0);
490 #define SETUP(type, request) (((type) << 8) | (request))
492 static void handle_setup(void)
494 struct ci_ep *ci_ep = &controller.ep[0];
495 struct ci_req *ci_req;
496 struct usb_request *req;
497 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
498 struct ept_queue_head *head;
499 struct usb_ctrlrequest r;
501 int num, in, _num, _in, i;
504 ci_req = controller.ep0_req;
506 head = ci_get_qh(0, 0); /* EP0 OUT */
509 memcpy(&r, head->setup_data, sizeof(struct usb_ctrlrequest));
510 #ifdef CONFIG_CI_UDC_HAS_HOSTPC
511 writel(EPT_RX(0), &udc->epsetupstat);
513 writel(EPT_RX(0), &udc->epstat);
515 DBG("handle setup %s, %x, %x index %x value %x length %x\n",
516 reqname(r.bRequest), r.bRequestType, r.bRequest, r.wIndex,
517 r.wValue, r.wLength);
519 /* Set EP0 dir for Data Stage based on Setup Stage data */
520 if (r.bRequestType & USB_DIR_IN) {
521 DBG("%s: Set ep0 to IN for Data Stage\n", __func__);
522 ep0_desc.bEndpointAddress = USB_DIR_IN;
524 DBG("%s: Set ep0 to OUT for Data Stage\n", __func__);
525 ep0_desc.bEndpointAddress = 0;
528 controller.ep0_data_phase = true;
530 /* 0 length -> no Data Stage. Flip dir for Status Stage */
531 DBG("%s: 0 length: flip ep0 dir for Status Stage\n", __func__);
532 flip_ep0_direction();
533 controller.ep0_data_phase = false;
536 list_del_init(&ci_req->queue);
537 ci_ep->req_primed = false;
539 switch (SETUP(r.bRequestType, r.bRequest)) {
540 case SETUP(USB_RECIP_ENDPOINT, USB_REQ_CLEAR_FEATURE):
541 _num = r.wIndex & 15;
542 _in = !!(r.wIndex & 0x80);
544 if ((r.wValue == 0) && (r.wLength == 0)) {
546 for (i = 0; i < NUM_ENDPOINTS; i++) {
547 struct ci_ep *ep = &controller.ep[i];
551 num = ep->desc->bEndpointAddress
552 & USB_ENDPOINT_NUMBER_MASK;
553 in = (ep->desc->bEndpointAddress
555 if ((num == _num) && (in == _in)) {
556 ep_enable(num, in, ep->ep.maxpacket);
557 usb_ep_queue(controller.gadget.ep0,
565 case SETUP(USB_RECIP_DEVICE, USB_REQ_SET_ADDRESS):
567 * write address delayed (will take effect
568 * after the next IN txn)
570 writel((r.wValue << 25) | (1 << 24), &udc->devaddr);
572 usb_ep_queue(controller.gadget.ep0, req, 0);
575 case SETUP(USB_DIR_IN | USB_RECIP_DEVICE, USB_REQ_GET_STATUS):
577 buf = (char *)req->buf;
578 buf[0] = 1 << USB_DEVICE_SELF_POWERED;
580 usb_ep_queue(controller.gadget.ep0, req, 0);
583 /* pass request up to the gadget driver */
584 if (controller.driver)
585 status = controller.driver->setup(&controller.gadget, &r);
591 DBG("STALL reqname %s type %x value %x, index %x\n",
592 reqname(r.bRequest), r.bRequestType, r.wValue, r.wIndex);
593 writel((1<<16) | (1 << 0), &udc->epctrl[0]);
596 static void stop_activity(void)
599 struct ept_queue_head *head;
600 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
601 writel(readl(&udc->epcomp), &udc->epcomp);
602 #ifdef CONFIG_CI_UDC_HAS_HOSTPC
603 writel(readl(&udc->epsetupstat), &udc->epsetupstat);
605 writel(readl(&udc->epstat), &udc->epstat);
606 writel(0xffffffff, &udc->epflush);
608 /* error out any pending reqs */
609 for (i = 0; i < NUM_ENDPOINTS; i++) {
611 writel(0, &udc->epctrl[i]);
612 if (controller.ep[i].desc) {
613 num = controller.ep[i].desc->bEndpointAddress
614 & USB_ENDPOINT_NUMBER_MASK;
615 in = (controller.ep[i].desc->bEndpointAddress
617 head = ci_get_qh(num, in);
618 head->info = INFO_ACTIVE;
626 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
627 unsigned n = readl(&udc->usbsts);
628 writel(n, &udc->usbsts);
631 n &= (STS_SLI | STS_URI | STS_PCI | STS_UI | STS_UEI);
636 DBG("-- reset --\n");
640 DBG("-- suspend --\n");
644 int speed = USB_SPEED_FULL;
646 #ifdef CONFIG_CI_UDC_HAS_HOSTPC
647 bit = (readl(&udc->hostpc1_devlc) >> 25) & 3;
649 bit = (readl(&udc->portsc) >> 26) & 3;
651 DBG("-- portchange %x %s\n", bit, (bit == 2) ? "High" : "Full");
653 speed = USB_SPEED_HIGH;
656 controller.gadget.speed = speed;
657 for (i = 1; i < NUM_ENDPOINTS; i++) {
658 if (controller.ep[i].ep.maxpacket > max)
659 controller.ep[i].ep.maxpacket = max;
664 printf("<UEI %x>\n", readl(&udc->epcomp));
666 if ((n & STS_UI) || (n & STS_UEI)) {
667 #ifdef CONFIG_CI_UDC_HAS_HOSTPC
668 n = readl(&udc->epsetupstat);
670 n = readl(&udc->epstat);
675 n = readl(&udc->epcomp);
677 writel(n, &udc->epcomp);
679 for (i = 0; i < NUM_ENDPOINTS && n; i++) {
680 if (controller.ep[i].desc) {
681 num = controller.ep[i].desc->bEndpointAddress
682 & USB_ENDPOINT_NUMBER_MASK;
683 in = (controller.ep[i].desc->bEndpointAddress
685 bit = (in) ? EPT_TX(num) : EPT_RX(num);
687 handle_ep_complete(&controller.ep[i]);
693 int usb_gadget_handle_interrupts(void)
696 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
698 value = readl(&udc->usbsts);
705 void udc_disconnect(void)
707 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
710 writel(USBCMD_FS2, &udc->usbcmd);
712 if (controller.driver)
713 controller.driver->disconnect(&controller.gadget);
716 static int ci_pullup(struct usb_gadget *gadget, int is_on)
718 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
721 writel(USBCMD_ITC(MICRO_8FRAME) | USBCMD_RST, &udc->usbcmd);
724 writel((unsigned)controller.epts, &udc->epinitaddr);
726 /* select DEVICE mode */
727 writel(USBMODE_DEVICE, &udc->usbmode);
729 writel(0xffffffff, &udc->epflush);
731 /* Turn on the USB connection by enabling the pullup resistor */
732 writel(USBCMD_ITC(MICRO_8FRAME) | USBCMD_RUN, &udc->usbcmd);
740 static int ci_udc_probe(void)
742 struct ept_queue_head *head;
746 const int num = 2 * NUM_ENDPOINTS;
748 const int eplist_min_align = 4096;
749 const int eplist_align = roundup(eplist_min_align, ARCH_DMA_MINALIGN);
750 const int eplist_raw_sz = num * sizeof(struct ept_queue_head);
751 const int eplist_sz = roundup(eplist_raw_sz, ARCH_DMA_MINALIGN);
753 const int ilist_align = roundup(ARCH_DMA_MINALIGN, 32);
754 const int ilist_ent_raw_sz = 2 * sizeof(struct ept_queue_item);
755 const int ilist_ent_sz = roundup(ilist_ent_raw_sz, ARCH_DMA_MINALIGN);
756 const int ilist_sz = NUM_ENDPOINTS * ilist_ent_sz;
758 /* The QH list must be aligned to 4096 bytes. */
759 controller.epts = memalign(eplist_align, eplist_sz);
760 if (!controller.epts)
762 memset(controller.epts, 0, eplist_sz);
765 * Each qTD item must be 32-byte aligned, each qTD touple must be
766 * cacheline aligned. There are two qTD items for each endpoint and
767 * only one of them is used for the endpoint at time, so we can group
770 controller.items_mem = memalign(ilist_align, ilist_sz);
771 if (!controller.items_mem) {
772 free(controller.epts);
775 memset(controller.items_mem, 0, ilist_sz);
777 for (i = 0; i < 2 * NUM_ENDPOINTS; i++) {
779 * Configure QH for each endpoint. The structure of the QH list
780 * is such that each two subsequent fields, N and N+1 where N is
781 * even, in the QH list represent QH for one endpoint. The Nth
782 * entry represents OUT configuration and the N+1th entry does
783 * represent IN configuration of the endpoint.
785 head = controller.epts + i;
787 head->config = CONFIG_MAX_PKT(EP0_MAX_PACKET_SIZE)
788 | CONFIG_ZLT | CONFIG_IOS;
790 head->config = CONFIG_MAX_PKT(EP_MAX_PACKET_SIZE)
792 head->next = TERMINATE;
795 imem = controller.items_mem + ((i >> 1) * ilist_ent_sz);
797 imem += sizeof(struct ept_queue_item);
799 controller.items[i] = (struct ept_queue_item *)imem;
807 INIT_LIST_HEAD(&controller.gadget.ep_list);
810 memcpy(&controller.ep[0].ep, &ci_ep_init[0], sizeof(*ci_ep_init));
811 controller.ep[0].desc = &ep0_desc;
812 INIT_LIST_HEAD(&controller.ep[0].queue);
813 controller.ep[0].req_primed = false;
814 controller.gadget.ep0 = &controller.ep[0].ep;
815 INIT_LIST_HEAD(&controller.gadget.ep0->ep_list);
818 for (i = 1; i < NUM_ENDPOINTS; i++) {
819 memcpy(&controller.ep[i].ep, &ci_ep_init[1],
820 sizeof(*ci_ep_init));
821 INIT_LIST_HEAD(&controller.ep[i].queue);
822 controller.ep[i].req_primed = false;
823 list_add_tail(&controller.ep[i].ep.ep_list,
824 &controller.gadget.ep_list);
827 ci_ep_alloc_request(&controller.ep[0].ep, 0);
828 if (!controller.ep0_req) {
829 free(controller.epts);
836 int usb_gadget_register_driver(struct usb_gadget_driver *driver)
842 if (!driver->bind || !driver->setup || !driver->disconnect)
844 if (driver->speed != USB_SPEED_FULL && driver->speed != USB_SPEED_HIGH)
847 ret = usb_lowlevel_init(0, USB_INIT_DEVICE, (void **)&controller.ctrl);
851 ret = ci_udc_probe();
852 #if defined(CONFIG_USB_EHCI_MX6) || defined(CONFIG_USB_EHCI_MXS)
854 * FIXME: usb_lowlevel_init()->ehci_hcd_init() should be doing all
855 * HW-specific initialization, e.g. ULPI-vs-UTMI PHY selection
858 struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
860 /* select ULPI phy */
861 writel(PTS(PTS_ENABLE) | PFSC, &udc->portsc);
865 ret = driver->bind(&controller.gadget);
867 DBG("driver->bind() returned %d\n", ret);
870 controller.driver = driver;
875 int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)