2 * R8A66597 UDC (USB gadget)
4 * Copyright (C) 2006-2009 Renesas Solutions Corp.
6 * Author : Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; version 2 of the License.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
23 #include <linux/module.h>
24 #include <linux/interrupt.h>
25 #include <linux/delay.h>
27 #include <linux/platform_device.h>
28 #include <linux/clk.h>
30 #include <linux/usb/ch9.h>
31 #include <linux/usb/gadget.h>
33 #include "r8a66597-udc.h"
35 #define DRIVER_VERSION "2009-08-18"
37 static const char udc_name[] = "r8a66597_udc";
38 static const char *r8a66597_ep_name[] = {
39 "ep0", "ep1", "ep2", "ep3", "ep4", "ep5", "ep6", "ep7",
43 static void disable_controller(struct r8a66597 *r8a66597);
44 static void irq_ep0_write(struct r8a66597_ep *ep, struct r8a66597_request *req);
45 static void irq_packet_write(struct r8a66597_ep *ep,
46 struct r8a66597_request *req);
47 static int r8a66597_queue(struct usb_ep *_ep, struct usb_request *_req,
50 static void transfer_complete(struct r8a66597_ep *ep,
51 struct r8a66597_request *req, int status);
53 /*-------------------------------------------------------------------------*/
54 static inline u16 get_usb_speed(struct r8a66597 *r8a66597)
56 return r8a66597_read(r8a66597, DVSTCTR0) & RHST;
59 static void enable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
64 tmp = r8a66597_read(r8a66597, INTENB0);
65 r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE,
67 r8a66597_bset(r8a66597, (1 << pipenum), reg);
68 r8a66597_write(r8a66597, tmp, INTENB0);
71 static void disable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
76 tmp = r8a66597_read(r8a66597, INTENB0);
77 r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE,
79 r8a66597_bclr(r8a66597, (1 << pipenum), reg);
80 r8a66597_write(r8a66597, tmp, INTENB0);
83 static void r8a66597_usb_connect(struct r8a66597 *r8a66597)
85 r8a66597_bset(r8a66597, CTRE, INTENB0);
86 r8a66597_bset(r8a66597, BEMPE | BRDYE, INTENB0);
88 r8a66597_bset(r8a66597, DPRPU, SYSCFG0);
91 static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597)
92 __releases(r8a66597->lock)
93 __acquires(r8a66597->lock)
95 r8a66597_bclr(r8a66597, CTRE, INTENB0);
96 r8a66597_bclr(r8a66597, BEMPE | BRDYE, INTENB0);
97 r8a66597_bclr(r8a66597, DPRPU, SYSCFG0);
99 r8a66597->gadget.speed = USB_SPEED_UNKNOWN;
100 spin_unlock(&r8a66597->lock);
101 r8a66597->driver->disconnect(&r8a66597->gadget);
102 spin_lock(&r8a66597->lock);
104 disable_controller(r8a66597);
105 INIT_LIST_HEAD(&r8a66597->ep[0].queue);
108 static inline u16 control_reg_get_pid(struct r8a66597 *r8a66597, u16 pipenum)
111 unsigned long offset;
114 pid = r8a66597_read(r8a66597, DCPCTR) & PID;
115 else if (pipenum < R8A66597_MAX_NUM_PIPE) {
116 offset = get_pipectr_addr(pipenum);
117 pid = r8a66597_read(r8a66597, offset) & PID;
119 printk(KERN_ERR "unexpect pipe num (%d)\n", pipenum);
124 static inline void control_reg_set_pid(struct r8a66597 *r8a66597, u16 pipenum,
127 unsigned long offset;
130 r8a66597_mdfy(r8a66597, pid, PID, DCPCTR);
131 else if (pipenum < R8A66597_MAX_NUM_PIPE) {
132 offset = get_pipectr_addr(pipenum);
133 r8a66597_mdfy(r8a66597, pid, PID, offset);
135 printk(KERN_ERR "unexpect pipe num (%d)\n", pipenum);
138 static inline void pipe_start(struct r8a66597 *r8a66597, u16 pipenum)
140 control_reg_set_pid(r8a66597, pipenum, PID_BUF);
143 static inline void pipe_stop(struct r8a66597 *r8a66597, u16 pipenum)
145 control_reg_set_pid(r8a66597, pipenum, PID_NAK);
148 static inline void pipe_stall(struct r8a66597 *r8a66597, u16 pipenum)
150 control_reg_set_pid(r8a66597, pipenum, PID_STALL);
153 static inline u16 control_reg_get(struct r8a66597 *r8a66597, u16 pipenum)
156 unsigned long offset;
159 ret = r8a66597_read(r8a66597, DCPCTR);
160 else if (pipenum < R8A66597_MAX_NUM_PIPE) {
161 offset = get_pipectr_addr(pipenum);
162 ret = r8a66597_read(r8a66597, offset);
164 printk(KERN_ERR "unexpect pipe num (%d)\n", pipenum);
169 static inline void control_reg_sqclr(struct r8a66597 *r8a66597, u16 pipenum)
171 unsigned long offset;
173 pipe_stop(r8a66597, pipenum);
176 r8a66597_bset(r8a66597, SQCLR, DCPCTR);
177 else if (pipenum < R8A66597_MAX_NUM_PIPE) {
178 offset = get_pipectr_addr(pipenum);
179 r8a66597_bset(r8a66597, SQCLR, offset);
181 printk(KERN_ERR "unexpect pipe num(%d)\n", pipenum);
184 static inline int get_buffer_size(struct r8a66597 *r8a66597, u16 pipenum)
190 tmp = r8a66597_read(r8a66597, DCPCFG);
191 if ((tmp & R8A66597_CNTMD) != 0)
194 tmp = r8a66597_read(r8a66597, DCPMAXP);
198 r8a66597_write(r8a66597, pipenum, PIPESEL);
199 tmp = r8a66597_read(r8a66597, PIPECFG);
200 if ((tmp & R8A66597_CNTMD) != 0) {
201 tmp = r8a66597_read(r8a66597, PIPEBUF);
202 size = ((tmp >> 10) + 1) * 64;
204 tmp = r8a66597_read(r8a66597, PIPEMAXP);
212 static inline unsigned short mbw_value(struct r8a66597 *r8a66597)
214 if (r8a66597->pdata->on_chip)
220 static inline void pipe_change(struct r8a66597 *r8a66597, u16 pipenum)
222 struct r8a66597_ep *ep = r8a66597->pipenum2ep[pipenum];
227 r8a66597_mdfy(r8a66597, pipenum, CURPIPE, ep->fifosel);
231 r8a66597_bset(r8a66597, mbw_value(r8a66597), ep->fifosel);
234 static int pipe_buffer_setting(struct r8a66597 *r8a66597,
235 struct r8a66597_pipe_info *info)
237 u16 bufnum = 0, buf_bsize = 0;
243 r8a66597_write(r8a66597, info->pipe, PIPESEL);
246 pipecfg |= R8A66597_DIR;
247 pipecfg |= info->type;
248 pipecfg |= info->epnum;
249 switch (info->type) {
251 bufnum = 4 + (info->pipe - R8A66597_BASE_PIPENUM_INT);
255 /* isochronous pipes may be used as bulk pipes */
256 if (info->pipe > R8A66597_BASE_PIPENUM_BULK)
257 bufnum = info->pipe - R8A66597_BASE_PIPENUM_BULK;
259 bufnum = info->pipe - R8A66597_BASE_PIPENUM_ISOC;
261 bufnum = R8A66597_BASE_BUFNUM + (bufnum * 16);
263 pipecfg |= R8A66597_DBLB;
265 pipecfg |= R8A66597_SHTNAK;
268 bufnum = R8A66597_BASE_BUFNUM +
269 (info->pipe - R8A66597_BASE_PIPENUM_ISOC) * 16;
274 if (buf_bsize && ((bufnum + 16) >= R8A66597_MAX_BUFNUM)) {
275 pr_err(KERN_ERR "r8a66597 pipe memory is insufficient\n");
279 r8a66597_write(r8a66597, pipecfg, PIPECFG);
280 r8a66597_write(r8a66597, (buf_bsize << 10) | (bufnum), PIPEBUF);
281 r8a66597_write(r8a66597, info->maxpacket, PIPEMAXP);
284 r8a66597_write(r8a66597, info->interval, PIPEPERI);
289 static void pipe_buffer_release(struct r8a66597 *r8a66597,
290 struct r8a66597_pipe_info *info)
295 if (is_bulk_pipe(info->pipe))
297 else if (is_interrupt_pipe(info->pipe))
298 r8a66597->interrupt--;
299 else if (is_isoc_pipe(info->pipe)) {
300 r8a66597->isochronous--;
301 if (info->type == R8A66597_BULK)
304 printk(KERN_ERR "ep_release: unexpect pipenum (%d)\n",
308 static void pipe_initialize(struct r8a66597_ep *ep)
310 struct r8a66597 *r8a66597 = ep->r8a66597;
312 r8a66597_mdfy(r8a66597, 0, CURPIPE, ep->fifosel);
314 r8a66597_write(r8a66597, ACLRM, ep->pipectr);
315 r8a66597_write(r8a66597, 0, ep->pipectr);
316 r8a66597_write(r8a66597, SQCLR, ep->pipectr);
318 r8a66597_mdfy(r8a66597, ep->pipenum, CURPIPE, ep->fifosel);
322 r8a66597_bset(r8a66597, mbw_value(r8a66597), ep->fifosel);
326 static void r8a66597_ep_setting(struct r8a66597 *r8a66597,
327 struct r8a66597_ep *ep,
328 const struct usb_endpoint_descriptor *desc,
329 u16 pipenum, int dma)
332 ep->fifoaddr = CFIFO;
333 ep->fifosel = CFIFOSEL;
334 ep->fifoctr = CFIFOCTR;
337 ep->pipectr = get_pipectr_addr(pipenum);
338 ep->pipenum = pipenum;
339 ep->ep.maxpacket = le16_to_cpu(desc->wMaxPacketSize);
340 r8a66597->pipenum2ep[pipenum] = ep;
341 r8a66597->epaddr2ep[desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK]
343 INIT_LIST_HEAD(&ep->queue);
346 static void r8a66597_ep_release(struct r8a66597_ep *ep)
348 struct r8a66597 *r8a66597 = ep->r8a66597;
349 u16 pipenum = ep->pipenum;
361 static int alloc_pipe_config(struct r8a66597_ep *ep,
362 const struct usb_endpoint_descriptor *desc)
364 struct r8a66597 *r8a66597 = ep->r8a66597;
365 struct r8a66597_pipe_info info;
367 unsigned char *counter;
372 if (ep->pipenum) /* already allocated pipe */
375 switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
376 case USB_ENDPOINT_XFER_BULK:
377 if (r8a66597->bulk >= R8A66597_MAX_NUM_BULK) {
378 if (r8a66597->isochronous >= R8A66597_MAX_NUM_ISOC) {
379 printk(KERN_ERR "bulk pipe is insufficient\n");
382 info.pipe = R8A66597_BASE_PIPENUM_ISOC
383 + r8a66597->isochronous;
384 counter = &r8a66597->isochronous;
387 info.pipe = R8A66597_BASE_PIPENUM_BULK + r8a66597->bulk;
388 counter = &r8a66597->bulk;
390 info.type = R8A66597_BULK;
393 case USB_ENDPOINT_XFER_INT:
394 if (r8a66597->interrupt >= R8A66597_MAX_NUM_INT) {
395 printk(KERN_ERR "interrupt pipe is insufficient\n");
398 info.pipe = R8A66597_BASE_PIPENUM_INT + r8a66597->interrupt;
399 info.type = R8A66597_INT;
400 counter = &r8a66597->interrupt;
402 case USB_ENDPOINT_XFER_ISOC:
403 if (r8a66597->isochronous >= R8A66597_MAX_NUM_ISOC) {
404 printk(KERN_ERR "isochronous pipe is insufficient\n");
407 info.pipe = R8A66597_BASE_PIPENUM_ISOC + r8a66597->isochronous;
408 info.type = R8A66597_ISO;
409 counter = &r8a66597->isochronous;
412 printk(KERN_ERR "unexpect xfer type\n");
415 ep->type = info.type;
417 info.epnum = desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
418 info.maxpacket = le16_to_cpu(desc->wMaxPacketSize);
419 info.interval = desc->bInterval;
420 if (desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
425 ret = pipe_buffer_setting(r8a66597, &info);
427 printk(KERN_ERR "pipe_buffer_setting fail\n");
432 if ((counter == &r8a66597->isochronous) && info.type == R8A66597_BULK)
435 r8a66597_ep_setting(r8a66597, ep, desc, info.pipe, dma);
441 static int free_pipe_config(struct r8a66597_ep *ep)
443 struct r8a66597 *r8a66597 = ep->r8a66597;
444 struct r8a66597_pipe_info info;
446 info.pipe = ep->pipenum;
447 info.type = ep->type;
448 pipe_buffer_release(r8a66597, &info);
449 r8a66597_ep_release(ep);
454 /*-------------------------------------------------------------------------*/
455 static void pipe_irq_enable(struct r8a66597 *r8a66597, u16 pipenum)
457 enable_irq_ready(r8a66597, pipenum);
458 enable_irq_nrdy(r8a66597, pipenum);
461 static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum)
463 disable_irq_ready(r8a66597, pipenum);
464 disable_irq_nrdy(r8a66597, pipenum);
467 /* if complete is true, gadget driver complete function is not call */
468 static void control_end(struct r8a66597 *r8a66597, unsigned ccpl)
470 r8a66597->ep[0].internal_ccpl = ccpl;
471 pipe_start(r8a66597, 0);
472 r8a66597_bset(r8a66597, CCPL, DCPCTR);
475 static void start_ep0_write(struct r8a66597_ep *ep,
476 struct r8a66597_request *req)
478 struct r8a66597 *r8a66597 = ep->r8a66597;
480 pipe_change(r8a66597, ep->pipenum);
481 r8a66597_mdfy(r8a66597, ISEL, (ISEL | CURPIPE), CFIFOSEL);
482 r8a66597_write(r8a66597, BCLR, ep->fifoctr);
483 if (req->req.length == 0) {
484 r8a66597_bset(r8a66597, BVAL, ep->fifoctr);
485 pipe_start(r8a66597, 0);
486 transfer_complete(ep, req, 0);
488 r8a66597_write(r8a66597, ~BEMP0, BEMPSTS);
489 irq_ep0_write(ep, req);
493 static void start_packet_write(struct r8a66597_ep *ep,
494 struct r8a66597_request *req)
496 struct r8a66597 *r8a66597 = ep->r8a66597;
499 pipe_change(r8a66597, ep->pipenum);
500 disable_irq_empty(r8a66597, ep->pipenum);
501 pipe_start(r8a66597, ep->pipenum);
503 tmp = r8a66597_read(r8a66597, ep->fifoctr);
504 if (unlikely((tmp & FRDY) == 0))
505 pipe_irq_enable(r8a66597, ep->pipenum);
507 irq_packet_write(ep, req);
510 static void start_packet_read(struct r8a66597_ep *ep,
511 struct r8a66597_request *req)
513 struct r8a66597 *r8a66597 = ep->r8a66597;
514 u16 pipenum = ep->pipenum;
516 if (ep->pipenum == 0) {
517 r8a66597_mdfy(r8a66597, 0, (ISEL | CURPIPE), CFIFOSEL);
518 r8a66597_write(r8a66597, BCLR, ep->fifoctr);
519 pipe_start(r8a66597, pipenum);
520 pipe_irq_enable(r8a66597, pipenum);
523 r8a66597_bset(r8a66597, TRCLR, ep->fifosel);
524 pipe_change(r8a66597, pipenum);
525 r8a66597_bset(r8a66597, TRENB, ep->fifosel);
526 r8a66597_write(r8a66597,
527 (req->req.length + ep->ep.maxpacket - 1)
531 pipe_start(r8a66597, pipenum); /* trigger once */
532 pipe_irq_enable(r8a66597, pipenum);
536 static void start_packet(struct r8a66597_ep *ep, struct r8a66597_request *req)
538 if (ep->desc->bEndpointAddress & USB_DIR_IN)
539 start_packet_write(ep, req);
541 start_packet_read(ep, req);
544 static void start_ep0(struct r8a66597_ep *ep, struct r8a66597_request *req)
548 ctsq = r8a66597_read(ep->r8a66597, INTSTS0) & CTSQ;
552 start_ep0_write(ep, req);
555 start_packet_read(ep, req);
559 control_end(ep->r8a66597, 0);
562 printk(KERN_ERR "start_ep0: unexpect ctsq(%x)\n", ctsq);
567 static void init_controller(struct r8a66597 *r8a66597)
569 u16 vif = r8a66597->pdata->vif ? LDRV : 0;
570 u16 irq_sense = r8a66597->irq_sense_low ? INTL : 0;
571 u16 endian = r8a66597->pdata->endian ? BIGEND : 0;
573 if (r8a66597->pdata->on_chip) {
574 r8a66597_bset(r8a66597, 0x04, SYSCFG1);
575 r8a66597_bset(r8a66597, HSE, SYSCFG0);
577 r8a66597_bclr(r8a66597, USBE, SYSCFG0);
578 r8a66597_bclr(r8a66597, DPRPU, SYSCFG0);
579 r8a66597_bset(r8a66597, USBE, SYSCFG0);
581 r8a66597_bset(r8a66597, SCKE, SYSCFG0);
583 r8a66597_bset(r8a66597, irq_sense, INTENB1);
584 r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR,
587 r8a66597_bset(r8a66597, vif | endian, PINCFG);
588 r8a66597_bset(r8a66597, HSE, SYSCFG0); /* High spd */
589 r8a66597_mdfy(r8a66597, get_xtal_from_pdata(r8a66597->pdata),
592 r8a66597_bclr(r8a66597, USBE, SYSCFG0);
593 r8a66597_bclr(r8a66597, DPRPU, SYSCFG0);
594 r8a66597_bset(r8a66597, USBE, SYSCFG0);
596 r8a66597_bset(r8a66597, XCKE, SYSCFG0);
600 r8a66597_bset(r8a66597, PLLC, SYSCFG0);
604 r8a66597_bset(r8a66597, SCKE, SYSCFG0);
606 r8a66597_bset(r8a66597, irq_sense, INTENB1);
607 r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR,
612 static void disable_controller(struct r8a66597 *r8a66597)
614 if (r8a66597->pdata->on_chip) {
615 r8a66597_bset(r8a66597, SCKE, SYSCFG0);
617 r8a66597_write(r8a66597, 0, INTENB0);
618 r8a66597_write(r8a66597, 0, INTENB1);
620 r8a66597_bclr(r8a66597, USBE, SYSCFG0);
621 r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
624 r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
626 r8a66597_bclr(r8a66597, PLLC, SYSCFG0);
629 r8a66597_bclr(r8a66597, XCKE, SYSCFG0);
633 static void r8a66597_start_xclock(struct r8a66597 *r8a66597)
637 if (!r8a66597->pdata->on_chip) {
638 tmp = r8a66597_read(r8a66597, SYSCFG0);
640 r8a66597_bset(r8a66597, XCKE, SYSCFG0);
644 static struct r8a66597_request *get_request_from_ep(struct r8a66597_ep *ep)
646 return list_entry(ep->queue.next, struct r8a66597_request, queue);
649 /*-------------------------------------------------------------------------*/
650 static void transfer_complete(struct r8a66597_ep *ep,
651 struct r8a66597_request *req, int status)
652 __releases(r8a66597->lock)
653 __acquires(r8a66597->lock)
657 if (unlikely(ep->pipenum == 0)) {
658 if (ep->internal_ccpl) {
659 ep->internal_ccpl = 0;
664 list_del_init(&req->queue);
665 if (ep->r8a66597->gadget.speed == USB_SPEED_UNKNOWN)
666 req->req.status = -ESHUTDOWN;
668 req->req.status = status;
670 if (!list_empty(&ep->queue))
673 spin_unlock(&ep->r8a66597->lock);
674 req->req.complete(&ep->ep, &req->req);
675 spin_lock(&ep->r8a66597->lock);
678 req = get_request_from_ep(ep);
680 start_packet(ep, req);
684 static void irq_ep0_write(struct r8a66597_ep *ep, struct r8a66597_request *req)
691 u16 pipenum = ep->pipenum;
692 struct r8a66597 *r8a66597 = ep->r8a66597;
694 pipe_change(r8a66597, pipenum);
695 r8a66597_bset(r8a66597, ISEL, ep->fifosel);
699 tmp = r8a66597_read(r8a66597, ep->fifoctr);
701 printk(KERN_ERR "pipe0 is busy. maybe cpu i/o bus"
702 "conflict. please power off this controller.");
706 } while ((tmp & FRDY) == 0);
708 /* prepare parameters */
709 bufsize = get_buffer_size(r8a66597, pipenum);
710 buf = req->req.buf + req->req.actual;
711 size = min(bufsize, req->req.length - req->req.actual);
716 r8a66597_write_fifo(r8a66597, ep->fifoaddr, buf, size);
717 if ((size == 0) || ((size % ep->ep.maxpacket) != 0))
718 r8a66597_bset(r8a66597, BVAL, ep->fifoctr);
721 /* update parameters */
722 req->req.actual += size;
724 /* check transfer finish */
725 if ((!req->req.zero && (req->req.actual == req->req.length))
726 || (size % ep->ep.maxpacket)
728 disable_irq_ready(r8a66597, pipenum);
729 disable_irq_empty(r8a66597, pipenum);
731 disable_irq_ready(r8a66597, pipenum);
732 enable_irq_empty(r8a66597, pipenum);
734 pipe_start(r8a66597, pipenum);
737 static void irq_packet_write(struct r8a66597_ep *ep,
738 struct r8a66597_request *req)
744 u16 pipenum = ep->pipenum;
745 struct r8a66597 *r8a66597 = ep->r8a66597;
747 pipe_change(r8a66597, pipenum);
748 tmp = r8a66597_read(r8a66597, ep->fifoctr);
749 if (unlikely((tmp & FRDY) == 0)) {
750 pipe_stop(r8a66597, pipenum);
751 pipe_irq_disable(r8a66597, pipenum);
752 printk(KERN_ERR "write fifo not ready. pipnum=%d\n", pipenum);
756 /* prepare parameters */
757 bufsize = get_buffer_size(r8a66597, pipenum);
758 buf = req->req.buf + req->req.actual;
759 size = min(bufsize, req->req.length - req->req.actual);
763 r8a66597_write_fifo(r8a66597, ep->fifoaddr, buf, size);
765 || ((size % ep->ep.maxpacket) != 0)
766 || ((bufsize != ep->ep.maxpacket)
767 && (bufsize > size)))
768 r8a66597_bset(r8a66597, BVAL, ep->fifoctr);
771 /* update parameters */
772 req->req.actual += size;
773 /* check transfer finish */
774 if ((!req->req.zero && (req->req.actual == req->req.length))
775 || (size % ep->ep.maxpacket)
777 disable_irq_ready(r8a66597, pipenum);
778 enable_irq_empty(r8a66597, pipenum);
780 disable_irq_empty(r8a66597, pipenum);
781 pipe_irq_enable(r8a66597, pipenum);
785 static void irq_packet_read(struct r8a66597_ep *ep,
786 struct r8a66597_request *req)
789 int rcv_len, bufsize, req_len;
792 u16 pipenum = ep->pipenum;
793 struct r8a66597 *r8a66597 = ep->r8a66597;
796 pipe_change(r8a66597, pipenum);
797 tmp = r8a66597_read(r8a66597, ep->fifoctr);
798 if (unlikely((tmp & FRDY) == 0)) {
799 req->req.status = -EPIPE;
800 pipe_stop(r8a66597, pipenum);
801 pipe_irq_disable(r8a66597, pipenum);
802 printk(KERN_ERR "read fifo not ready");
806 /* prepare parameters */
807 rcv_len = tmp & DTLN;
808 bufsize = get_buffer_size(r8a66597, pipenum);
810 buf = req->req.buf + req->req.actual;
811 req_len = req->req.length - req->req.actual;
812 if (rcv_len < bufsize)
813 size = min(rcv_len, req_len);
815 size = min(bufsize, req_len);
817 /* update parameters */
818 req->req.actual += size;
820 /* check transfer finish */
821 if ((!req->req.zero && (req->req.actual == req->req.length))
822 || (size % ep->ep.maxpacket)
824 pipe_stop(r8a66597, pipenum);
825 pipe_irq_disable(r8a66597, pipenum);
832 r8a66597_write(r8a66597, BCLR, ep->fifoctr);
834 r8a66597_read_fifo(r8a66597, ep->fifoaddr, buf, size);
838 if ((ep->pipenum != 0) && finish)
839 transfer_complete(ep, req, 0);
842 static void irq_pipe_ready(struct r8a66597 *r8a66597, u16 status, u16 enb)
846 struct r8a66597_ep *ep;
847 struct r8a66597_request *req;
849 if ((status & BRDY0) && (enb & BRDY0)) {
850 r8a66597_write(r8a66597, ~BRDY0, BRDYSTS);
851 r8a66597_mdfy(r8a66597, 0, CURPIPE, CFIFOSEL);
853 ep = &r8a66597->ep[0];
854 req = get_request_from_ep(ep);
855 irq_packet_read(ep, req);
857 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
858 check = 1 << pipenum;
859 if ((status & check) && (enb & check)) {
860 r8a66597_write(r8a66597, ~check, BRDYSTS);
861 ep = r8a66597->pipenum2ep[pipenum];
862 req = get_request_from_ep(ep);
863 if (ep->desc->bEndpointAddress & USB_DIR_IN)
864 irq_packet_write(ep, req);
866 irq_packet_read(ep, req);
872 static void irq_pipe_empty(struct r8a66597 *r8a66597, u16 status, u16 enb)
877 struct r8a66597_ep *ep;
878 struct r8a66597_request *req;
880 if ((status & BEMP0) && (enb & BEMP0)) {
881 r8a66597_write(r8a66597, ~BEMP0, BEMPSTS);
883 ep = &r8a66597->ep[0];
884 req = get_request_from_ep(ep);
885 irq_ep0_write(ep, req);
887 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
888 check = 1 << pipenum;
889 if ((status & check) && (enb & check)) {
890 r8a66597_write(r8a66597, ~check, BEMPSTS);
891 tmp = control_reg_get(r8a66597, pipenum);
892 if ((tmp & INBUFM) == 0) {
893 disable_irq_empty(r8a66597, pipenum);
894 pipe_irq_disable(r8a66597, pipenum);
895 pipe_stop(r8a66597, pipenum);
896 ep = r8a66597->pipenum2ep[pipenum];
897 req = get_request_from_ep(ep);
898 if (!list_empty(&ep->queue))
899 transfer_complete(ep, req, 0);
906 static void get_status(struct r8a66597 *r8a66597, struct usb_ctrlrequest *ctrl)
907 __releases(r8a66597->lock)
908 __acquires(r8a66597->lock)
910 struct r8a66597_ep *ep;
913 u16 w_index = le16_to_cpu(ctrl->wIndex);
915 switch (ctrl->bRequestType & USB_RECIP_MASK) {
916 case USB_RECIP_DEVICE:
917 status = 1 << USB_DEVICE_SELF_POWERED;
919 case USB_RECIP_INTERFACE:
922 case USB_RECIP_ENDPOINT:
923 ep = r8a66597->epaddr2ep[w_index & USB_ENDPOINT_NUMBER_MASK];
924 pid = control_reg_get_pid(r8a66597, ep->pipenum);
925 if (pid == PID_STALL)
926 status = 1 << USB_ENDPOINT_HALT;
931 pipe_stall(r8a66597, 0);
935 r8a66597->ep0_data = cpu_to_le16(status);
936 r8a66597->ep0_req->buf = &r8a66597->ep0_data;
937 r8a66597->ep0_req->length = 2;
938 /* AV: what happens if we get called again before that gets through? */
939 spin_unlock(&r8a66597->lock);
940 r8a66597_queue(r8a66597->gadget.ep0, r8a66597->ep0_req, GFP_KERNEL);
941 spin_lock(&r8a66597->lock);
944 static void clear_feature(struct r8a66597 *r8a66597,
945 struct usb_ctrlrequest *ctrl)
947 switch (ctrl->bRequestType & USB_RECIP_MASK) {
948 case USB_RECIP_DEVICE:
949 control_end(r8a66597, 1);
951 case USB_RECIP_INTERFACE:
952 control_end(r8a66597, 1);
954 case USB_RECIP_ENDPOINT: {
955 struct r8a66597_ep *ep;
956 struct r8a66597_request *req;
957 u16 w_index = le16_to_cpu(ctrl->wIndex);
959 ep = r8a66597->epaddr2ep[w_index & USB_ENDPOINT_NUMBER_MASK];
960 pipe_stop(r8a66597, ep->pipenum);
961 control_reg_sqclr(r8a66597, ep->pipenum);
963 control_end(r8a66597, 1);
965 req = get_request_from_ep(ep);
968 if (list_empty(&ep->queue))
970 start_packet(ep, req);
971 } else if (!list_empty(&ep->queue))
972 pipe_start(r8a66597, ep->pipenum);
976 pipe_stall(r8a66597, 0);
981 static void set_feature(struct r8a66597 *r8a66597, struct usb_ctrlrequest *ctrl)
984 switch (ctrl->bRequestType & USB_RECIP_MASK) {
985 case USB_RECIP_DEVICE:
986 control_end(r8a66597, 1);
988 case USB_RECIP_INTERFACE:
989 control_end(r8a66597, 1);
991 case USB_RECIP_ENDPOINT: {
992 struct r8a66597_ep *ep;
993 u16 w_index = le16_to_cpu(ctrl->wIndex);
995 ep = r8a66597->epaddr2ep[w_index & USB_ENDPOINT_NUMBER_MASK];
996 pipe_stall(r8a66597, ep->pipenum);
998 control_end(r8a66597, 1);
1002 pipe_stall(r8a66597, 0);
1007 /* if return value is true, call class driver's setup() */
1008 static int setup_packet(struct r8a66597 *r8a66597, struct usb_ctrlrequest *ctrl)
1010 u16 *p = (u16 *)ctrl;
1011 unsigned long offset = USBREQ;
1015 r8a66597_write(r8a66597, ~VALID, INTSTS0);
1017 for (i = 0; i < 4; i++)
1018 p[i] = r8a66597_read(r8a66597, offset + i*2);
1021 if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) {
1022 switch (ctrl->bRequest) {
1023 case USB_REQ_GET_STATUS:
1024 get_status(r8a66597, ctrl);
1026 case USB_REQ_CLEAR_FEATURE:
1027 clear_feature(r8a66597, ctrl);
1029 case USB_REQ_SET_FEATURE:
1030 set_feature(r8a66597, ctrl);
1041 static void r8a66597_update_usb_speed(struct r8a66597 *r8a66597)
1043 u16 speed = get_usb_speed(r8a66597);
1047 r8a66597->gadget.speed = USB_SPEED_HIGH;
1050 r8a66597->gadget.speed = USB_SPEED_FULL;
1053 r8a66597->gadget.speed = USB_SPEED_UNKNOWN;
1054 printk(KERN_ERR "USB speed unknown\n");
1058 static void irq_device_state(struct r8a66597 *r8a66597)
1062 dvsq = r8a66597_read(r8a66597, INTSTS0) & DVSQ;
1063 r8a66597_write(r8a66597, ~DVST, INTSTS0);
1065 if (dvsq == DS_DFLT) {
1067 r8a66597->driver->disconnect(&r8a66597->gadget);
1068 r8a66597_update_usb_speed(r8a66597);
1070 if (r8a66597->old_dvsq == DS_CNFG && dvsq != DS_CNFG)
1071 r8a66597_update_usb_speed(r8a66597);
1072 if ((dvsq == DS_CNFG || dvsq == DS_ADDS)
1073 && r8a66597->gadget.speed == USB_SPEED_UNKNOWN)
1074 r8a66597_update_usb_speed(r8a66597);
1076 r8a66597->old_dvsq = dvsq;
1079 static void irq_control_stage(struct r8a66597 *r8a66597)
1080 __releases(r8a66597->lock)
1081 __acquires(r8a66597->lock)
1083 struct usb_ctrlrequest ctrl;
1086 ctsq = r8a66597_read(r8a66597, INTSTS0) & CTSQ;
1087 r8a66597_write(r8a66597, ~CTRT, INTSTS0);
1091 struct r8a66597_ep *ep;
1092 struct r8a66597_request *req;
1093 ep = &r8a66597->ep[0];
1094 req = get_request_from_ep(ep);
1095 transfer_complete(ep, req, 0);
1102 if (setup_packet(r8a66597, &ctrl)) {
1103 spin_unlock(&r8a66597->lock);
1104 if (r8a66597->driver->setup(&r8a66597->gadget, &ctrl)
1106 pipe_stall(r8a66597, 0);
1107 spin_lock(&r8a66597->lock);
1112 control_end(r8a66597, 0);
1115 printk(KERN_ERR "ctrl_stage: unexpect ctsq(%x)\n", ctsq);
1120 static irqreturn_t r8a66597_irq(int irq, void *_r8a66597)
1122 struct r8a66597 *r8a66597 = _r8a66597;
1125 u16 brdysts, nrdysts, bempsts;
1126 u16 brdyenb, nrdyenb, bempenb;
1130 spin_lock(&r8a66597->lock);
1132 intsts0 = r8a66597_read(r8a66597, INTSTS0);
1133 intenb0 = r8a66597_read(r8a66597, INTENB0);
1135 savepipe = r8a66597_read(r8a66597, CFIFOSEL);
1137 mask0 = intsts0 & intenb0;
1139 brdysts = r8a66597_read(r8a66597, BRDYSTS);
1140 nrdysts = r8a66597_read(r8a66597, NRDYSTS);
1141 bempsts = r8a66597_read(r8a66597, BEMPSTS);
1142 brdyenb = r8a66597_read(r8a66597, BRDYENB);
1143 nrdyenb = r8a66597_read(r8a66597, NRDYENB);
1144 bempenb = r8a66597_read(r8a66597, BEMPENB);
1146 if (mask0 & VBINT) {
1147 r8a66597_write(r8a66597, 0xffff & ~VBINT,
1149 r8a66597_start_xclock(r8a66597);
1151 /* start vbus sampling */
1152 r8a66597->old_vbus = r8a66597_read(r8a66597, INTSTS0)
1154 r8a66597->scount = R8A66597_MAX_SAMPLING;
1156 mod_timer(&r8a66597->timer,
1157 jiffies + msecs_to_jiffies(50));
1160 irq_device_state(r8a66597);
1162 if ((intsts0 & BRDY) && (intenb0 & BRDYE)
1163 && (brdysts & brdyenb))
1164 irq_pipe_ready(r8a66597, brdysts, brdyenb);
1165 if ((intsts0 & BEMP) && (intenb0 & BEMPE)
1166 && (bempsts & bempenb))
1167 irq_pipe_empty(r8a66597, bempsts, bempenb);
1170 irq_control_stage(r8a66597);
1173 r8a66597_write(r8a66597, savepipe, CFIFOSEL);
1175 spin_unlock(&r8a66597->lock);
1179 static void r8a66597_timer(unsigned long _r8a66597)
1181 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1182 unsigned long flags;
1185 spin_lock_irqsave(&r8a66597->lock, flags);
1186 tmp = r8a66597_read(r8a66597, SYSCFG0);
1187 if (r8a66597->scount > 0) {
1188 tmp = r8a66597_read(r8a66597, INTSTS0) & VBSTS;
1189 if (tmp == r8a66597->old_vbus) {
1191 if (r8a66597->scount == 0) {
1193 r8a66597_usb_connect(r8a66597);
1195 r8a66597_usb_disconnect(r8a66597);
1197 mod_timer(&r8a66597->timer,
1198 jiffies + msecs_to_jiffies(50));
1201 r8a66597->scount = R8A66597_MAX_SAMPLING;
1202 r8a66597->old_vbus = tmp;
1203 mod_timer(&r8a66597->timer,
1204 jiffies + msecs_to_jiffies(50));
1207 spin_unlock_irqrestore(&r8a66597->lock, flags);
1210 /*-------------------------------------------------------------------------*/
1211 static int r8a66597_enable(struct usb_ep *_ep,
1212 const struct usb_endpoint_descriptor *desc)
1214 struct r8a66597_ep *ep;
1216 ep = container_of(_ep, struct r8a66597_ep, ep);
1217 return alloc_pipe_config(ep, desc);
1220 static int r8a66597_disable(struct usb_ep *_ep)
1222 struct r8a66597_ep *ep;
1223 struct r8a66597_request *req;
1224 unsigned long flags;
1226 ep = container_of(_ep, struct r8a66597_ep, ep);
1229 while (!list_empty(&ep->queue)) {
1230 req = get_request_from_ep(ep);
1231 spin_lock_irqsave(&ep->r8a66597->lock, flags);
1232 transfer_complete(ep, req, -ECONNRESET);
1233 spin_unlock_irqrestore(&ep->r8a66597->lock, flags);
1236 pipe_irq_disable(ep->r8a66597, ep->pipenum);
1237 return free_pipe_config(ep);
1240 static struct usb_request *r8a66597_alloc_request(struct usb_ep *_ep,
1243 struct r8a66597_request *req;
1245 req = kzalloc(sizeof(struct r8a66597_request), gfp_flags);
1249 INIT_LIST_HEAD(&req->queue);
1254 static void r8a66597_free_request(struct usb_ep *_ep, struct usb_request *_req)
1256 struct r8a66597_request *req;
1258 req = container_of(_req, struct r8a66597_request, req);
1262 static int r8a66597_queue(struct usb_ep *_ep, struct usb_request *_req,
1265 struct r8a66597_ep *ep;
1266 struct r8a66597_request *req;
1267 unsigned long flags;
1270 ep = container_of(_ep, struct r8a66597_ep, ep);
1271 req = container_of(_req, struct r8a66597_request, req);
1273 if (ep->r8a66597->gadget.speed == USB_SPEED_UNKNOWN)
1276 spin_lock_irqsave(&ep->r8a66597->lock, flags);
1278 if (list_empty(&ep->queue))
1281 list_add_tail(&req->queue, &ep->queue);
1282 req->req.actual = 0;
1283 req->req.status = -EINPROGRESS;
1285 if (ep->desc == NULL) /* control */
1288 if (request && !ep->busy)
1289 start_packet(ep, req);
1292 spin_unlock_irqrestore(&ep->r8a66597->lock, flags);
1297 static int r8a66597_dequeue(struct usb_ep *_ep, struct usb_request *_req)
1299 struct r8a66597_ep *ep;
1300 struct r8a66597_request *req;
1301 unsigned long flags;
1303 ep = container_of(_ep, struct r8a66597_ep, ep);
1304 req = container_of(_req, struct r8a66597_request, req);
1306 spin_lock_irqsave(&ep->r8a66597->lock, flags);
1307 if (!list_empty(&ep->queue))
1308 transfer_complete(ep, req, -ECONNRESET);
1309 spin_unlock_irqrestore(&ep->r8a66597->lock, flags);
1314 static int r8a66597_set_halt(struct usb_ep *_ep, int value)
1316 struct r8a66597_ep *ep;
1317 struct r8a66597_request *req;
1318 unsigned long flags;
1321 ep = container_of(_ep, struct r8a66597_ep, ep);
1322 req = get_request_from_ep(ep);
1324 spin_lock_irqsave(&ep->r8a66597->lock, flags);
1325 if (!list_empty(&ep->queue)) {
1331 pipe_stall(ep->r8a66597, ep->pipenum);
1334 pipe_stop(ep->r8a66597, ep->pipenum);
1338 spin_unlock_irqrestore(&ep->r8a66597->lock, flags);
1342 static void r8a66597_fifo_flush(struct usb_ep *_ep)
1344 struct r8a66597_ep *ep;
1345 unsigned long flags;
1347 ep = container_of(_ep, struct r8a66597_ep, ep);
1348 spin_lock_irqsave(&ep->r8a66597->lock, flags);
1349 if (list_empty(&ep->queue) && !ep->busy) {
1350 pipe_stop(ep->r8a66597, ep->pipenum);
1351 r8a66597_bclr(ep->r8a66597, BCLR, ep->fifoctr);
1353 spin_unlock_irqrestore(&ep->r8a66597->lock, flags);
1356 static struct usb_ep_ops r8a66597_ep_ops = {
1357 .enable = r8a66597_enable,
1358 .disable = r8a66597_disable,
1360 .alloc_request = r8a66597_alloc_request,
1361 .free_request = r8a66597_free_request,
1363 .queue = r8a66597_queue,
1364 .dequeue = r8a66597_dequeue,
1366 .set_halt = r8a66597_set_halt,
1367 .fifo_flush = r8a66597_fifo_flush,
1370 /*-------------------------------------------------------------------------*/
1371 static struct r8a66597 *the_controller;
1373 int usb_gadget_register_driver(struct usb_gadget_driver *driver)
1375 struct r8a66597 *r8a66597 = the_controller;
1379 || driver->speed != USB_SPEED_HIGH
1385 if (r8a66597->driver)
1388 /* hook up the driver */
1389 driver->driver.bus = NULL;
1390 r8a66597->driver = driver;
1391 r8a66597->gadget.dev.driver = &driver->driver;
1393 retval = device_add(&r8a66597->gadget.dev);
1395 printk(KERN_ERR "device_add error (%d)\n", retval);
1399 retval = driver->bind(&r8a66597->gadget);
1401 printk(KERN_ERR "bind to driver error (%d)\n", retval);
1402 device_del(&r8a66597->gadget.dev);
1406 r8a66597_bset(r8a66597, VBSE, INTENB0);
1407 if (r8a66597_read(r8a66597, INTSTS0) & VBSTS) {
1408 r8a66597_start_xclock(r8a66597);
1409 /* start vbus sampling */
1410 r8a66597->old_vbus = r8a66597_read(r8a66597,
1412 r8a66597->scount = R8A66597_MAX_SAMPLING;
1413 mod_timer(&r8a66597->timer, jiffies + msecs_to_jiffies(50));
1419 r8a66597->driver = NULL;
1420 r8a66597->gadget.dev.driver = NULL;
1424 EXPORT_SYMBOL(usb_gadget_register_driver);
1426 int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
1428 struct r8a66597 *r8a66597 = the_controller;
1429 unsigned long flags;
1431 if (driver != r8a66597->driver || !driver->unbind)
1434 spin_lock_irqsave(&r8a66597->lock, flags);
1435 if (r8a66597->gadget.speed != USB_SPEED_UNKNOWN)
1436 r8a66597_usb_disconnect(r8a66597);
1437 spin_unlock_irqrestore(&r8a66597->lock, flags);
1439 r8a66597_bclr(r8a66597, VBSE, INTENB0);
1441 driver->unbind(&r8a66597->gadget);
1443 init_controller(r8a66597);
1444 disable_controller(r8a66597);
1446 device_del(&r8a66597->gadget.dev);
1447 r8a66597->driver = NULL;
1450 EXPORT_SYMBOL(usb_gadget_unregister_driver);
1452 /*-------------------------------------------------------------------------*/
1453 static int r8a66597_get_frame(struct usb_gadget *_gadget)
1455 struct r8a66597 *r8a66597 = gadget_to_r8a66597(_gadget);
1456 return r8a66597_read(r8a66597, FRMNUM) & 0x03FF;
1459 static struct usb_gadget_ops r8a66597_gadget_ops = {
1460 .get_frame = r8a66597_get_frame,
1463 static int __exit r8a66597_remove(struct platform_device *pdev)
1465 struct r8a66597 *r8a66597 = dev_get_drvdata(&pdev->dev);
1467 del_timer_sync(&r8a66597->timer);
1468 iounmap((void *)r8a66597->reg);
1469 free_irq(platform_get_irq(pdev, 0), r8a66597);
1470 r8a66597_free_request(&r8a66597->ep[0].ep, r8a66597->ep0_req);
1471 #ifdef CONFIG_HAVE_CLK
1472 if (r8a66597->pdata->on_chip) {
1473 clk_disable(r8a66597->clk);
1474 clk_put(r8a66597->clk);
1481 static void nop_completion(struct usb_ep *ep, struct usb_request *r)
1485 static int __init r8a66597_probe(struct platform_device *pdev)
1487 #ifdef CONFIG_HAVE_CLK
1490 struct resource *res, *ires;
1492 void __iomem *reg = NULL;
1493 struct r8a66597 *r8a66597 = NULL;
1496 unsigned long irq_trigger;
1498 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1501 printk(KERN_ERR "platform_get_resource error.\n");
1505 ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1507 irq_trigger = ires->flags & IRQF_TRIGGER_MASK;
1511 printk(KERN_ERR "platform_get_irq error.\n");
1515 reg = ioremap(res->start, resource_size(res));
1518 printk(KERN_ERR "ioremap error.\n");
1522 /* initialize ucd */
1523 r8a66597 = kzalloc(sizeof(struct r8a66597), GFP_KERNEL);
1524 if (r8a66597 == NULL) {
1525 printk(KERN_ERR "kzalloc error\n");
1529 spin_lock_init(&r8a66597->lock);
1530 dev_set_drvdata(&pdev->dev, r8a66597);
1531 r8a66597->pdata = pdev->dev.platform_data;
1532 r8a66597->irq_sense_low = irq_trigger == IRQF_TRIGGER_LOW;
1534 r8a66597->gadget.ops = &r8a66597_gadget_ops;
1535 device_initialize(&r8a66597->gadget.dev);
1536 dev_set_name(&r8a66597->gadget.dev, "gadget");
1537 r8a66597->gadget.is_dualspeed = 1;
1538 r8a66597->gadget.dev.parent = &pdev->dev;
1539 r8a66597->gadget.dev.dma_mask = pdev->dev.dma_mask;
1540 r8a66597->gadget.dev.release = pdev->dev.release;
1541 r8a66597->gadget.name = udc_name;
1543 init_timer(&r8a66597->timer);
1544 r8a66597->timer.function = r8a66597_timer;
1545 r8a66597->timer.data = (unsigned long)r8a66597;
1546 r8a66597->reg = (unsigned long)reg;
1548 #ifdef CONFIG_HAVE_CLK
1549 if (r8a66597->pdata->on_chip) {
1550 snprintf(clk_name, sizeof(clk_name), "usb%d", pdev->id);
1551 r8a66597->clk = clk_get(&pdev->dev, clk_name);
1552 if (IS_ERR(r8a66597->clk)) {
1553 dev_err(&pdev->dev, "cannot get clock \"%s\"\n",
1555 ret = PTR_ERR(r8a66597->clk);
1558 clk_enable(r8a66597->clk);
1562 disable_controller(r8a66597); /* make sure controller is disabled */
1564 ret = request_irq(irq, r8a66597_irq, IRQF_DISABLED | IRQF_SHARED,
1565 udc_name, r8a66597);
1567 printk(KERN_ERR "request_irq error (%d)\n", ret);
1571 INIT_LIST_HEAD(&r8a66597->gadget.ep_list);
1572 r8a66597->gadget.ep0 = &r8a66597->ep[0].ep;
1573 INIT_LIST_HEAD(&r8a66597->gadget.ep0->ep_list);
1574 for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) {
1575 struct r8a66597_ep *ep = &r8a66597->ep[i];
1578 INIT_LIST_HEAD(&r8a66597->ep[i].ep.ep_list);
1579 list_add_tail(&r8a66597->ep[i].ep.ep_list,
1580 &r8a66597->gadget.ep_list);
1582 ep->r8a66597 = r8a66597;
1583 INIT_LIST_HEAD(&ep->queue);
1584 ep->ep.name = r8a66597_ep_name[i];
1585 ep->ep.ops = &r8a66597_ep_ops;
1586 ep->ep.maxpacket = 512;
1588 r8a66597->ep[0].ep.maxpacket = 64;
1589 r8a66597->ep[0].pipenum = 0;
1590 r8a66597->ep[0].fifoaddr = CFIFO;
1591 r8a66597->ep[0].fifosel = CFIFOSEL;
1592 r8a66597->ep[0].fifoctr = CFIFOCTR;
1593 r8a66597->ep[0].fifotrn = 0;
1594 r8a66597->ep[0].pipectr = get_pipectr_addr(0);
1595 r8a66597->pipenum2ep[0] = &r8a66597->ep[0];
1596 r8a66597->epaddr2ep[0] = &r8a66597->ep[0];
1598 the_controller = r8a66597;
1600 r8a66597->ep0_req = r8a66597_alloc_request(&r8a66597->ep[0].ep,
1602 if (r8a66597->ep0_req == NULL)
1604 r8a66597->ep0_req->complete = nop_completion;
1606 init_controller(r8a66597);
1608 dev_info(&pdev->dev, "version %s\n", DRIVER_VERSION);
1612 free_irq(irq, r8a66597);
1614 #ifdef CONFIG_HAVE_CLK
1615 if (r8a66597->pdata->on_chip) {
1616 clk_disable(r8a66597->clk);
1617 clk_put(r8a66597->clk);
1622 if (r8a66597->ep0_req)
1623 r8a66597_free_request(&r8a66597->ep[0].ep,
1633 /*-------------------------------------------------------------------------*/
1634 static struct platform_driver r8a66597_driver = {
1635 .remove = __exit_p(r8a66597_remove),
1637 .name = (char *) udc_name,
1641 static int __init r8a66597_udc_init(void)
1643 return platform_driver_probe(&r8a66597_driver, r8a66597_probe);
1645 module_init(r8a66597_udc_init);
1647 static void __exit r8a66597_udc_cleanup(void)
1649 platform_driver_unregister(&r8a66597_driver);
1651 module_exit(r8a66597_udc_cleanup);
1653 MODULE_DESCRIPTION("R8A66597 USB gadget driver");
1654 MODULE_LICENSE("GPL");
1655 MODULE_AUTHOR("Yoshihiro Shimoda");