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x86/PCI: use host bridge _CRS info on ASUS M2V-MX SE
[linux-btrfs-devel.git] / drivers / usb / gadget / fusb300_udc.c
blob4ec888f900029ac823f2a136ef47ab18f03b5826
1 /*
2 * Fusb300 UDC (USB gadget)
3 *
4 * Copyright (C) 2010 Faraday Technology Corp.
5 *
6 * Author : Yuan-hsin Chen <yhchen@faraday-tech.com>
7 *
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.
11 *
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.
16 *
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
20 *
21 */
22 #include <linux/dma-mapping.h>
23 #include <linux/err.h>
24 #include <linux/interrupt.h>
25 #include <linux/io.h>
26 #include <linux/platform_device.h>
27 #include <linux/usb/ch9.h>
28 #include <linux/usb/gadget.h>
29
30 #include "fusb300_udc.h"
31
32 MODULE_DESCRIPTION("FUSB300 USB gadget driver");
33 MODULE_LICENSE("GPL");
34 MODULE_AUTHOR("Yuan Hsin Chen <yhchen@faraday-tech.com>");
35 MODULE_ALIAS("platform:fusb300_udc");
36
37 #define DRIVER_VERSION "20 October 2010"
38
39 static const char udc_name[] = "fusb300_udc";
40 static const char * const fusb300_ep_name[] = {
41 "ep0", "ep1", "ep2", "ep3", "ep4", "ep5", "ep6", "ep7", "ep8", "ep9",
42 "ep10", "ep11", "ep12", "ep13", "ep14", "ep15"
43 };
44
45 static void done(struct fusb300_ep *ep, struct fusb300_request *req,
46 int status);
47
48 static void fusb300_enable_bit(struct fusb300 *fusb300, u32 offset,
49 u32 value)
50 {
51 u32 reg = ioread32(fusb300->reg + offset);
52
53 reg |= value;
54 iowrite32(reg, fusb300->reg + offset);
55 }
56
57 static void fusb300_disable_bit(struct fusb300 *fusb300, u32 offset,
58 u32 value)
59 {
60 u32 reg = ioread32(fusb300->reg + offset);
61
62 reg &= ~value;
63 iowrite32(reg, fusb300->reg + offset);
64 }
65
66
67 static void fusb300_ep_setting(struct fusb300_ep *ep,
68 struct fusb300_ep_info info)
69 {
70 ep->epnum = info.epnum;
71 ep->type = info.type;
72 }
73
74 static int fusb300_ep_release(struct fusb300_ep *ep)
75 {
76 if (!ep->epnum)
77 return 0;
78 ep->epnum = 0;
79 ep->stall = 0;
80 ep->wedged = 0;
81 return 0;
82 }
83
84 static void fusb300_set_fifo_entry(struct fusb300 *fusb300,
85 u32 ep)
86 {
87 u32 val = ioread32(fusb300->reg + FUSB300_OFFSET_EPSET1(ep));
88
89 val &= ~FUSB300_EPSET1_FIFOENTRY_MSK;
90 val |= FUSB300_EPSET1_FIFOENTRY(FUSB300_FIFO_ENTRY_NUM);
91 iowrite32(val, fusb300->reg + FUSB300_OFFSET_EPSET1(ep));
92 }
93
94 static void fusb300_set_start_entry(struct fusb300 *fusb300,
95 u8 ep)
96 {
97 u32 reg = ioread32(fusb300->reg + FUSB300_OFFSET_EPSET1(ep));
98 u32 start_entry = fusb300->fifo_entry_num * FUSB300_FIFO_ENTRY_NUM;
99
100 reg &= ~FUSB300_EPSET1_START_ENTRY_MSK ;
101 reg |= FUSB300_EPSET1_START_ENTRY(start_entry);
102 iowrite32(reg, fusb300->reg + FUSB300_OFFSET_EPSET1(ep));
103 if (fusb300->fifo_entry_num == FUSB300_MAX_FIFO_ENTRY) {
104 fusb300->fifo_entry_num = 0;
105 fusb300->addrofs = 0;
106 pr_err("fifo entry is over the maximum number!\n");
107 } else
108 fusb300->fifo_entry_num++;
109 }
110
111 /* set fusb300_set_start_entry first before fusb300_set_epaddrofs */
112 static void fusb300_set_epaddrofs(struct fusb300 *fusb300,
113 struct fusb300_ep_info info)
114 {
115 u32 reg = ioread32(fusb300->reg + FUSB300_OFFSET_EPSET2(info.epnum));
116
117 reg &= ~FUSB300_EPSET2_ADDROFS_MSK;
118 reg |= FUSB300_EPSET2_ADDROFS(fusb300->addrofs);
119 iowrite32(reg, fusb300->reg + FUSB300_OFFSET_EPSET2(info.epnum));
120 fusb300->addrofs += (info.maxpacket + 7) / 8 * FUSB300_FIFO_ENTRY_NUM;
121 }
122
123 static void ep_fifo_setting(struct fusb300 *fusb300,
124 struct fusb300_ep_info info)
125 {
126 fusb300_set_fifo_entry(fusb300, info.epnum);
127 fusb300_set_start_entry(fusb300, info.epnum);
128 fusb300_set_epaddrofs(fusb300, info);
129 }
130
131 static void fusb300_set_eptype(struct fusb300 *fusb300,
132 struct fusb300_ep_info info)
133 {
134 u32 reg = ioread32(fusb300->reg + FUSB300_OFFSET_EPSET1(info.epnum));
135
136 reg &= ~FUSB300_EPSET1_TYPE_MSK;
137 reg |= FUSB300_EPSET1_TYPE(info.type);
138 iowrite32(reg, fusb300->reg + FUSB300_OFFSET_EPSET1(info.epnum));
139 }
140
141 static void fusb300_set_epdir(struct fusb300 *fusb300,
142 struct fusb300_ep_info info)
143 {
144 u32 reg;
145
146 if (!info.dir_in)
147 return;
148 reg = ioread32(fusb300->reg + FUSB300_OFFSET_EPSET1(info.epnum));
149 reg &= ~FUSB300_EPSET1_DIR_MSK;
150 reg |= FUSB300_EPSET1_DIRIN;
151 iowrite32(reg, fusb300->reg + FUSB300_OFFSET_EPSET1(info.epnum));
152 }
153
154 static void fusb300_set_ep_active(struct fusb300 *fusb300,
155 u8 ep)
156 {
157 u32 reg = ioread32(fusb300->reg + FUSB300_OFFSET_EPSET1(ep));
158
159 reg |= FUSB300_EPSET1_ACTEN;
160 iowrite32(reg, fusb300->reg + FUSB300_OFFSET_EPSET1(ep));
161 }
162
163 static void fusb300_set_epmps(struct fusb300 *fusb300,
164 struct fusb300_ep_info info)
165 {
166 u32 reg = ioread32(fusb300->reg + FUSB300_OFFSET_EPSET2(info.epnum));
167
168 reg &= ~FUSB300_EPSET2_MPS_MSK;
169 reg |= FUSB300_EPSET2_MPS(info.maxpacket);
170 iowrite32(reg, fusb300->reg + FUSB300_OFFSET_EPSET2(info.epnum));
171 }
172
173 static void fusb300_set_interval(struct fusb300 *fusb300,
174 struct fusb300_ep_info info)
175 {
176 u32 reg = ioread32(fusb300->reg + FUSB300_OFFSET_EPSET1(info.epnum));
177
178 reg &= ~FUSB300_EPSET1_INTERVAL(0x7);
179 reg |= FUSB300_EPSET1_INTERVAL(info.interval);
180 iowrite32(reg, fusb300->reg + FUSB300_OFFSET_EPSET1(info.epnum));
181 }
182
183 static void fusb300_set_bwnum(struct fusb300 *fusb300,
184 struct fusb300_ep_info info)
185 {
186 u32 reg = ioread32(fusb300->reg + FUSB300_OFFSET_EPSET1(info.epnum));
187
188 reg &= ~FUSB300_EPSET1_BWNUM(0x3);
189 reg |= FUSB300_EPSET1_BWNUM(info.bw_num);
190 iowrite32(reg, fusb300->reg + FUSB300_OFFSET_EPSET1(info.epnum));
191 }
192
193 static void set_ep_reg(struct fusb300 *fusb300,
194 struct fusb300_ep_info info)
195 {
196 fusb300_set_eptype(fusb300, info);
197 fusb300_set_epdir(fusb300, info);
198 fusb300_set_epmps(fusb300, info);
199
200 if (info.interval)
201 fusb300_set_interval(fusb300, info);
202
203 if (info.bw_num)
204 fusb300_set_bwnum(fusb300, info);
205
206 fusb300_set_ep_active(fusb300, info.epnum);
207 }
208
209 static int config_ep(struct fusb300_ep *ep,
210 const struct usb_endpoint_descriptor *desc)
211 {
212 struct fusb300 *fusb300 = ep->fusb300;
213 struct fusb300_ep_info info;
214
215 ep->desc = desc;
216
217 info.interval = 0;
218 info.addrofs = 0;
219 info.bw_num = 0;
220
221 info.type = desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK;
222 info.dir_in = (desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK) ? 1 : 0;
223 info.maxpacket = le16_to_cpu(desc->wMaxPacketSize);
224 info.epnum = desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
225
226 if ((info.type == USB_ENDPOINT_XFER_INT) ||
227 (info.type == USB_ENDPOINT_XFER_ISOC)) {
228 info.interval = desc->bInterval;
229 if (info.type == USB_ENDPOINT_XFER_ISOC)
230 info.bw_num = ((desc->wMaxPacketSize & 0x1800) >> 11);
231 }
232
233 ep_fifo_setting(fusb300, info);
234
235 set_ep_reg(fusb300, info);
236
237 fusb300_ep_setting(ep, info);
238
239 fusb300->ep[info.epnum] = ep;
240
241 return 0;
242 }
243
244 static int fusb300_enable(struct usb_ep *_ep,
245 const struct usb_endpoint_descriptor *desc)
246 {
247 struct fusb300_ep *ep;
248
249 ep = container_of(_ep, struct fusb300_ep, ep);
250
251 if (ep->fusb300->reenum) {
252 ep->fusb300->fifo_entry_num = 0;
253 ep->fusb300->addrofs = 0;
254 ep->fusb300->reenum = 0;
255 }
256
257 return config_ep(ep, desc);
258 }
259
260 static int fusb300_disable(struct usb_ep *_ep)
261 {
262 struct fusb300_ep *ep;
263 struct fusb300_request *req;
264 unsigned long flags;
265
266 ep = container_of(_ep, struct fusb300_ep, ep);
267
268 BUG_ON(!ep);
269
270 while (!list_empty(&ep->queue)) {
271 req = list_entry(ep->queue.next, struct fusb300_request, queue);
272 spin_lock_irqsave(&ep->fusb300->lock, flags);
273 done(ep, req, -ECONNRESET);
274 spin_unlock_irqrestore(&ep->fusb300->lock, flags);
275 }
276
277 return fusb300_ep_release(ep);
278 }
279
280 static struct usb_request *fusb300_alloc_request(struct usb_ep *_ep,
281 gfp_t gfp_flags)
282 {
283 struct fusb300_request *req;
284
285 req = kzalloc(sizeof(struct fusb300_request), gfp_flags);
286 if (!req)
287 return NULL;
288 INIT_LIST_HEAD(&req->queue);
289
290 return &req->req;
291 }
292
293 static void fusb300_free_request(struct usb_ep *_ep, struct usb_request *_req)
294 {
295 struct fusb300_request *req;
296
297 req = container_of(_req, struct fusb300_request, req);
298 kfree(req);
299 }
300
301 static int enable_fifo_int(struct fusb300_ep *ep)
302 {
303 struct fusb300 *fusb300 = ep->fusb300;
304
305 if (ep->epnum) {
306 fusb300_enable_bit(fusb300, FUSB300_OFFSET_IGER0,
307 FUSB300_IGER0_EEPn_FIFO_INT(ep->epnum));
308 } else {
309 pr_err("can't enable_fifo_int ep0\n");
310 return -EINVAL;
311 }
312
313 return 0;
314 }
315
316 static int disable_fifo_int(struct fusb300_ep *ep)
317 {
318 struct fusb300 *fusb300 = ep->fusb300;
319
320 if (ep->epnum) {
321 fusb300_disable_bit(fusb300, FUSB300_OFFSET_IGER0,
322 FUSB300_IGER0_EEPn_FIFO_INT(ep->epnum));
323 } else {
324 pr_err("can't disable_fifo_int ep0\n");
325 return -EINVAL;
326 }
327
328 return 0;
329 }
330
331 static void fusb300_set_cxlen(struct fusb300 *fusb300, u32 length)
332 {
333 u32 reg;
334
335 reg = ioread32(fusb300->reg + FUSB300_OFFSET_CSR);
336 reg &= ~FUSB300_CSR_LEN_MSK;
337 reg |= FUSB300_CSR_LEN(length);
338 iowrite32(reg, fusb300->reg + FUSB300_OFFSET_CSR);
339 }
340
341 /* write data to cx fifo */
342 static void fusb300_wrcxf(struct fusb300_ep *ep,
343 struct fusb300_request *req)
344 {
345 int i = 0;
346 u8 *tmp;
347 u32 data;
348 struct fusb300 *fusb300 = ep->fusb300;
349 u32 length = req->req.length - req->req.actual;
350
351 tmp = req->req.buf + req->req.actual;
352
353 if (length > SS_CTL_MAX_PACKET_SIZE) {
354 fusb300_set_cxlen(fusb300, SS_CTL_MAX_PACKET_SIZE);
355 for (i = (SS_CTL_MAX_PACKET_SIZE >> 2); i > 0; i--) {
356 data = *tmp | *(tmp + 1) << 8 | *(tmp + 2) << 16 |
357 *(tmp + 3) << 24;
358 iowrite32(data, fusb300->reg + FUSB300_OFFSET_CXPORT);
359 tmp += 4;
360 }
361 req->req.actual += SS_CTL_MAX_PACKET_SIZE;
362 } else { /* length is less than max packet size */
363 fusb300_set_cxlen(fusb300, length);
364 for (i = length >> 2; i > 0; i--) {
365 data = *tmp | *(tmp + 1) << 8 | *(tmp + 2) << 16 |
366 *(tmp + 3) << 24;
367 printk(KERN_DEBUG " 0x%x\n", data);
368 iowrite32(data, fusb300->reg + FUSB300_OFFSET_CXPORT);
369 tmp = tmp + 4;
370 }
371 switch (length % 4) {
372 case 1:
373 data = *tmp;
374 printk(KERN_DEBUG " 0x%x\n", data);
375 iowrite32(data, fusb300->reg + FUSB300_OFFSET_CXPORT);
376 break;
377 case 2:
378 data = *tmp | *(tmp + 1) << 8;
379 printk(KERN_DEBUG " 0x%x\n", data);
380 iowrite32(data, fusb300->reg + FUSB300_OFFSET_CXPORT);
381 break;
382 case 3:
383 data = *tmp | *(tmp + 1) << 8 | *(tmp + 2) << 16;
384 printk(KERN_DEBUG " 0x%x\n", data);
385 iowrite32(data, fusb300->reg + FUSB300_OFFSET_CXPORT);
386 break;
387 default:
388 break;
389 }
390 req->req.actual += length;
391 }
392 }
393
394 static void fusb300_set_epnstall(struct fusb300 *fusb300, u8 ep)
395 {
396 fusb300_enable_bit(fusb300, FUSB300_OFFSET_EPSET0(ep),
397 FUSB300_EPSET0_STL);
398 }
399
400 static void fusb300_clear_epnstall(struct fusb300 *fusb300, u8 ep)
401 {
402 u32 reg = ioread32(fusb300->reg + FUSB300_OFFSET_EPSET0(ep));
403
404 if (reg & FUSB300_EPSET0_STL) {
405 printk(KERN_DEBUG "EP%d stall... Clear!!\n", ep);
406 reg &= ~FUSB300_EPSET0_STL;
407 iowrite32(reg, fusb300->reg + FUSB300_OFFSET_EPSET0(ep));
408 }
409 }
410
411 static void ep0_queue(struct fusb300_ep *ep, struct fusb300_request *req)
412 {
413 if (ep->fusb300->ep0_dir) { /* if IN */
414 if (req->req.length) {
415 fusb300_wrcxf(ep, req);
416 } else
417 printk(KERN_DEBUG "%s : req->req.length = 0x%x\n",
418 __func__, req->req.length);
419 if ((req->req.length == req->req.actual) ||
420 (req->req.actual < ep->ep.maxpacket))
421 done(ep, req, 0);
422 } else { /* OUT */
423 if (!req->req.length)
424 done(ep, req, 0);
425 else
426 fusb300_enable_bit(ep->fusb300, FUSB300_OFFSET_IGER1,
427 FUSB300_IGER1_CX_OUT_INT);
428 }
429 }
430
431 static int fusb300_queue(struct usb_ep *_ep, struct usb_request *_req,
432 gfp_t gfp_flags)
433 {
434 struct fusb300_ep *ep;
435 struct fusb300_request *req;
436 unsigned long flags;
437 int request = 0;
438
439 ep = container_of(_ep, struct fusb300_ep, ep);
440 req = container_of(_req, struct fusb300_request, req);
441
442 if (ep->fusb300->gadget.speed == USB_SPEED_UNKNOWN)
443 return -ESHUTDOWN;
444
445 spin_lock_irqsave(&ep->fusb300->lock, flags);
446
447 if (list_empty(&ep->queue))
448 request = 1;
449
450 list_add_tail(&req->queue, &ep->queue);
451
452 req->req.actual = 0;
453 req->req.status = -EINPROGRESS;
454
455 if (ep->desc == NULL) /* ep0 */
456 ep0_queue(ep, req);
457 else if (request && !ep->stall)
458 enable_fifo_int(ep);
459
460 spin_unlock_irqrestore(&ep->fusb300->lock, flags);
461
462 return 0;
463 }
464
465 static int fusb300_dequeue(struct usb_ep *_ep, struct usb_request *_req)
466 {
467 struct fusb300_ep *ep;
468 struct fusb300_request *req;
469 unsigned long flags;
470
471 ep = container_of(_ep, struct fusb300_ep, ep);
472 req = container_of(_req, struct fusb300_request, req);
473
474 spin_lock_irqsave(&ep->fusb300->lock, flags);
475 if (!list_empty(&ep->queue))
476 done(ep, req, -ECONNRESET);
477 spin_unlock_irqrestore(&ep->fusb300->lock, flags);
478
479 return 0;
480 }
481
482 static int fusb300_set_halt_and_wedge(struct usb_ep *_ep, int value, int wedge)
483 {
484 struct fusb300_ep *ep;
485 struct fusb300 *fusb300;
486 unsigned long flags;
487 int ret = 0;
488
489 ep = container_of(_ep, struct fusb300_ep, ep);
490
491 fusb300 = ep->fusb300;
492
493 spin_lock_irqsave(&ep->fusb300->lock, flags);
494
495 if (!list_empty(&ep->queue)) {
496 ret = -EAGAIN;
497 goto out;
498 }
499
500 if (value) {
501 fusb300_set_epnstall(fusb300, ep->epnum);
502 ep->stall = 1;
503 if (wedge)
504 ep->wedged = 1;
505 } else {
506 fusb300_clear_epnstall(fusb300, ep->epnum);
507 ep->stall = 0;
508 ep->wedged = 0;
509 }
510
511 out:
512 spin_unlock_irqrestore(&ep->fusb300->lock, flags);
513 return ret;
514 }
515
516 static int fusb300_set_halt(struct usb_ep *_ep, int value)
517 {
518 return fusb300_set_halt_and_wedge(_ep, value, 0);
519 }
520
521 static int fusb300_set_wedge(struct usb_ep *_ep)
522 {
523 return fusb300_set_halt_and_wedge(_ep, 1, 1);
524 }
525
526 static void fusb300_fifo_flush(struct usb_ep *_ep)
527 {
528 }
529
530 static struct usb_ep_ops fusb300_ep_ops = {
531 .enable = fusb300_enable,
532 .disable = fusb300_disable,
533
534 .alloc_request = fusb300_alloc_request,
535 .free_request = fusb300_free_request,
536
537 .queue = fusb300_queue,
538 .dequeue = fusb300_dequeue,
539
540 .set_halt = fusb300_set_halt,
541 .fifo_flush = fusb300_fifo_flush,
542 .set_wedge = fusb300_set_wedge,
543 };
544
545 /*****************************************************************************/
546 static void fusb300_clear_int(struct fusb300 *fusb300, u32 offset,
547 u32 value)
548 {
549 iowrite32(value, fusb300->reg + offset);
550 }
551
552 static void fusb300_reset(void)
553 {
554 }
555
556 static void fusb300_set_cxstall(struct fusb300 *fusb300)
557 {
558 fusb300_enable_bit(fusb300, FUSB300_OFFSET_CSR,
559 FUSB300_CSR_STL);
560 }
561
562 static void fusb300_set_cxdone(struct fusb300 *fusb300)
563 {
564 fusb300_enable_bit(fusb300, FUSB300_OFFSET_CSR,
565 FUSB300_CSR_DONE);
566 }
567
568 /* read data from cx fifo */
569 void fusb300_rdcxf(struct fusb300 *fusb300,
570 u8 *buffer, u32 length)
571 {
572 int i = 0;
573 u8 *tmp;
574 u32 data;
575
576 tmp = buffer;
577
578 for (i = (length >> 2); i > 0; i--) {
579 data = ioread32(fusb300->reg + FUSB300_OFFSET_CXPORT);
580 printk(KERN_DEBUG " 0x%x\n", data);
581 *tmp = data & 0xFF;
582 *(tmp + 1) = (data >> 8) & 0xFF;
583 *(tmp + 2) = (data >> 16) & 0xFF;
584 *(tmp + 3) = (data >> 24) & 0xFF;
585 tmp = tmp + 4;
586 }
587
588 switch (length % 4) {
589 case 1:
590 data = ioread32(fusb300->reg + FUSB300_OFFSET_CXPORT);
591 printk(KERN_DEBUG " 0x%x\n", data);
592 *tmp = data & 0xFF;
593 break;
594 case 2:
595 data = ioread32(fusb300->reg + FUSB300_OFFSET_CXPORT);
596 printk(KERN_DEBUG " 0x%x\n", data);
597 *tmp = data & 0xFF;
598 *(tmp + 1) = (data >> 8) & 0xFF;
599 break;
600 case 3:
601 data = ioread32(fusb300->reg + FUSB300_OFFSET_CXPORT);
602 printk(KERN_DEBUG " 0x%x\n", data);
603 *tmp = data & 0xFF;
604 *(tmp + 1) = (data >> 8) & 0xFF;
605 *(tmp + 2) = (data >> 16) & 0xFF;
606 break;
607 default:
608 break;
609 }
610 }
611
612 static void fusb300_rdfifo(struct fusb300_ep *ep,
613 struct fusb300_request *req,
614 u32 length)
615 {
616 int i = 0;
617 u8 *tmp;
618 u32 data, reg;
619 struct fusb300 *fusb300 = ep->fusb300;
620
621 tmp = req->req.buf + req->req.actual;
622 req->req.actual += length;
623
624 if (req->req.actual > req->req.length)
625 printk(KERN_DEBUG "req->req.actual > req->req.length\n");
626
627 for (i = (length >> 2); i > 0; i--) {
628 data = ioread32(fusb300->reg +
629 FUSB300_OFFSET_EPPORT(ep->epnum));
630 *tmp = data & 0xFF;
631 *(tmp + 1) = (data >> 8) & 0xFF;
632 *(tmp + 2) = (data >> 16) & 0xFF;
633 *(tmp + 3) = (data >> 24) & 0xFF;
634 tmp = tmp + 4;
635 }
636
637 switch (length % 4) {
638 case 1:
639 data = ioread32(fusb300->reg +
640 FUSB300_OFFSET_EPPORT(ep->epnum));
641 *tmp = data & 0xFF;
642 break;
643 case 2:
644 data = ioread32(fusb300->reg +
645 FUSB300_OFFSET_EPPORT(ep->epnum));
646 *tmp = data & 0xFF;
647 *(tmp + 1) = (data >> 8) & 0xFF;
648 break;
649 case 3:
650 data = ioread32(fusb300->reg +
651 FUSB300_OFFSET_EPPORT(ep->epnum));
652 *tmp = data & 0xFF;
653 *(tmp + 1) = (data >> 8) & 0xFF;
654 *(tmp + 2) = (data >> 16) & 0xFF;
655 break;
656 default:
657 break;
658 }
659
660 do {
661 reg = ioread32(fusb300->reg + FUSB300_OFFSET_IGR1);
662 reg &= FUSB300_IGR1_SYNF0_EMPTY_INT;
663 if (i)
664 printk(KERN_INFO "sync fifo is not empty!\n");
665 i++;
666 } while (!reg);
667 }
668
669 static u8 fusb300_get_epnstall(struct fusb300 *fusb300, u8 ep)
670 {
671 u8 value;
672 u32 reg = ioread32(fusb300->reg + FUSB300_OFFSET_EPSET0(ep));
673
674 value = reg & FUSB300_EPSET0_STL;
675
676 return value;
677 }
678
679 static u8 fusb300_get_cxstall(struct fusb300 *fusb300)
680 {
681 u8 value;
682 u32 reg = ioread32(fusb300->reg + FUSB300_OFFSET_CSR);
683
684 value = (reg & FUSB300_CSR_STL) >> 1;
685
686 return value;
687 }
688
689 static void request_error(struct fusb300 *fusb300)
690 {
691 fusb300_set_cxstall(fusb300);
692 printk(KERN_DEBUG "request error!!\n");
693 }
694
695 static void get_status(struct fusb300 *fusb300, struct usb_ctrlrequest *ctrl)
696 __releases(fusb300->lock)
697 __acquires(fusb300->lock)
698 {
699 u8 ep;
700 u16 status = 0;
701 u16 w_index = ctrl->wIndex;
702
703 switch (ctrl->bRequestType & USB_RECIP_MASK) {
704 case USB_RECIP_DEVICE:
705 status = 1 << USB_DEVICE_SELF_POWERED;
706 break;
707 case USB_RECIP_INTERFACE:
708 status = 0;
709 break;
710 case USB_RECIP_ENDPOINT:
711 ep = w_index & USB_ENDPOINT_NUMBER_MASK;
712 if (ep) {
713 if (fusb300_get_epnstall(fusb300, ep))
714 status = 1 << USB_ENDPOINT_HALT;
715 } else {
716 if (fusb300_get_cxstall(fusb300))
717 status = 0;
718 }
719 break;
720
721 default:
722 request_error(fusb300);
723 return; /* exit */
724 }
725
726 fusb300->ep0_data = cpu_to_le16(status);
727 fusb300->ep0_req->buf = &fusb300->ep0_data;
728 fusb300->ep0_req->length = 2;
729
730 spin_unlock(&fusb300->lock);
731 fusb300_queue(fusb300->gadget.ep0, fusb300->ep0_req, GFP_KERNEL);
732 spin_lock(&fusb300->lock);
733 }
734
735 static void set_feature(struct fusb300 *fusb300, struct usb_ctrlrequest *ctrl)
736 {
737 u8 ep;
738
739 switch (ctrl->bRequestType & USB_RECIP_MASK) {
740 case USB_RECIP_DEVICE:
741 fusb300_set_cxdone(fusb300);
742 break;
743 case USB_RECIP_INTERFACE:
744 fusb300_set_cxdone(fusb300);
745 break;
746 case USB_RECIP_ENDPOINT: {
747 u16 w_index = le16_to_cpu(ctrl->wIndex);
748
749 ep = w_index & USB_ENDPOINT_NUMBER_MASK;
750 if (ep)
751 fusb300_set_epnstall(fusb300, ep);
752 else
753 fusb300_set_cxstall(fusb300);
754 fusb300_set_cxdone(fusb300);
755 }
756 break;
757 default:
758 request_error(fusb300);
759 break;
760 }
761 }
762
763 static void fusb300_clear_seqnum(struct fusb300 *fusb300, u8 ep)
764 {
765 fusb300_enable_bit(fusb300, FUSB300_OFFSET_EPSET0(ep),
766 FUSB300_EPSET0_CLRSEQNUM);
767 }
768
769 static void clear_feature(struct fusb300 *fusb300, struct usb_ctrlrequest *ctrl)
770 {
771 struct fusb300_ep *ep =
772 fusb300->ep[ctrl->wIndex & USB_ENDPOINT_NUMBER_MASK];
773
774 switch (ctrl->bRequestType & USB_RECIP_MASK) {
775 case USB_RECIP_DEVICE:
776 fusb300_set_cxdone(fusb300);
777 break;
778 case USB_RECIP_INTERFACE:
779 fusb300_set_cxdone(fusb300);
780 break;
781 case USB_RECIP_ENDPOINT:
782 if (ctrl->wIndex & USB_ENDPOINT_NUMBER_MASK) {
783 if (ep->wedged) {
784 fusb300_set_cxdone(fusb300);
785 break;
786 }
787 if (ep->stall) {
788 ep->stall = 0;
789 fusb300_clear_seqnum(fusb300, ep->epnum);
790 fusb300_clear_epnstall(fusb300, ep->epnum);
791 if (!list_empty(&ep->queue))
792 enable_fifo_int(ep);
793 }
794 }
795 fusb300_set_cxdone(fusb300);
796 break;
797 default:
798 request_error(fusb300);
799 break;
800 }
801 }
802
803 static void fusb300_set_dev_addr(struct fusb300 *fusb300, u16 addr)
804 {
805 u32 reg = ioread32(fusb300->reg + FUSB300_OFFSET_DAR);
806
807 reg &= ~FUSB300_DAR_DRVADDR_MSK;
808 reg |= FUSB300_DAR_DRVADDR(addr);
809
810 iowrite32(reg, fusb300->reg + FUSB300_OFFSET_DAR);
811 }
812
813 static void set_address(struct fusb300 *fusb300, struct usb_ctrlrequest *ctrl)
814 {
815 if (ctrl->wValue >= 0x0100)
816 request_error(fusb300);
817 else {
818 fusb300_set_dev_addr(fusb300, ctrl->wValue);
819 fusb300_set_cxdone(fusb300);
820 }
821 }
822
823 #define UVC_COPY_DESCRIPTORS(mem, src) \
824 do { \
825 const struct usb_descriptor_header * const *__src; \
826 for (__src = src; *__src; ++__src) { \
827 memcpy(mem, *__src, (*__src)->bLength); \
828 mem += (*__src)->bLength; \
829 } \
830 } while (0)
831
832 static int setup_packet(struct fusb300 *fusb300, struct usb_ctrlrequest *ctrl)
833 {
834 u8 *p = (u8 *)ctrl;
835 u8 ret = 0;
836 u8 i = 0;
837
838 fusb300_rdcxf(fusb300, p, 8);
839 fusb300->ep0_dir = ctrl->bRequestType & USB_DIR_IN;
840 fusb300->ep0_length = ctrl->wLength;
841
842 /* check request */
843 if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) {
844 switch (ctrl->bRequest) {
845 case USB_REQ_GET_STATUS:
846 get_status(fusb300, ctrl);
847 break;
848 case USB_REQ_CLEAR_FEATURE:
849 clear_feature(fusb300, ctrl);
850 break;
851 case USB_REQ_SET_FEATURE:
852 set_feature(fusb300, ctrl);
853 break;
854 case USB_REQ_SET_ADDRESS:
855 set_address(fusb300, ctrl);
856 break;
857 case USB_REQ_SET_CONFIGURATION:
858 fusb300_enable_bit(fusb300, FUSB300_OFFSET_DAR,
859 FUSB300_DAR_SETCONFG);
860 /* clear sequence number */
861 for (i = 1; i <= FUSB300_MAX_NUM_EP; i++)
862 fusb300_clear_seqnum(fusb300, i);
863 fusb300->reenum = 1;
864 ret = 1;
865 break;
866 default:
867 ret = 1;
868 break;
869 }
870 } else
871 ret = 1;
872
873 return ret;
874 }
875
876 static void done(struct fusb300_ep *ep, struct fusb300_request *req,
877 int status)
878 {
879 list_del_init(&req->queue);
880
881 /* don't modify queue heads during completion callback */
882 if (ep->fusb300->gadget.speed == USB_SPEED_UNKNOWN)
883 req->req.status = -ESHUTDOWN;
884 else
885 req->req.status = status;
886
887 spin_unlock(&ep->fusb300->lock);
888 req->req.complete(&ep->ep, &req->req);
889 spin_lock(&ep->fusb300->lock);
890
891 if (ep->epnum) {
892 disable_fifo_int(ep);
893 if (!list_empty(&ep->queue))
894 enable_fifo_int(ep);
895 } else
896 fusb300_set_cxdone(ep->fusb300);
897 }
898
899 static void fusb300_fill_idma_prdtbl(struct fusb300_ep *ep, dma_addr_t d,
900 u32 len)
901 {
902 u32 value;
903 u32 reg;
904
905 /* wait SW owner */
906 do {
907 reg = ioread32(ep->fusb300->reg +
908 FUSB300_OFFSET_EPPRD_W0(ep->epnum));
909 reg &= FUSB300_EPPRD0_H;
910 } while (reg);
911
912 iowrite32(d, ep->fusb300->reg + FUSB300_OFFSET_EPPRD_W1(ep->epnum));
913
914 value = FUSB300_EPPRD0_BTC(len) | FUSB300_EPPRD0_H |
915 FUSB300_EPPRD0_F | FUSB300_EPPRD0_L | FUSB300_EPPRD0_I;
916 iowrite32(value, ep->fusb300->reg + FUSB300_OFFSET_EPPRD_W0(ep->epnum));
917
918 iowrite32(0x0, ep->fusb300->reg + FUSB300_OFFSET_EPPRD_W2(ep->epnum));
919
920 fusb300_enable_bit(ep->fusb300, FUSB300_OFFSET_EPPRDRDY,
921 FUSB300_EPPRDR_EP_PRD_RDY(ep->epnum));
922 }
923
924 static void fusb300_wait_idma_finished(struct fusb300_ep *ep)
925 {
926 u32 reg;
927
928 do {
929 reg = ioread32(ep->fusb300->reg + FUSB300_OFFSET_IGR1);
930 if ((reg & FUSB300_IGR1_VBUS_CHG_INT) ||
931 (reg & FUSB300_IGR1_WARM_RST_INT) ||
932 (reg & FUSB300_IGR1_HOT_RST_INT) ||
933 (reg & FUSB300_IGR1_USBRST_INT)
934 )
935 goto IDMA_RESET;
936 reg = ioread32(ep->fusb300->reg + FUSB300_OFFSET_IGR0);
937 reg &= FUSB300_IGR0_EPn_PRD_INT(ep->epnum);
938 } while (!reg);
939
940 fusb300_clear_int(ep->fusb300, FUSB300_OFFSET_IGR0,
941 FUSB300_IGR0_EPn_PRD_INT(ep->epnum));
942 IDMA_RESET:
943 fusb300_clear_int(ep->fusb300, FUSB300_OFFSET_IGER0,
944 FUSB300_IGER0_EEPn_PRD_INT(ep->epnum));
945 }
946
947 static void fusb300_set_idma(struct fusb300_ep *ep,
948 struct fusb300_request *req)
949 {
950 dma_addr_t d;
951
952 d = dma_map_single(NULL, req->req.buf, req->req.length, DMA_TO_DEVICE);
953
954 if (dma_mapping_error(NULL, d)) {
955 printk(KERN_DEBUG "dma_mapping_error\n");
956 return;
957 }
958
959 dma_sync_single_for_device(NULL, d, req->req.length, DMA_TO_DEVICE);
960
961 fusb300_enable_bit(ep->fusb300, FUSB300_OFFSET_IGER0,
962 FUSB300_IGER0_EEPn_PRD_INT(ep->epnum));
963
964 fusb300_fill_idma_prdtbl(ep, d, req->req.length);
965 /* check idma is done */
966 fusb300_wait_idma_finished(ep);
967
968 dma_unmap_single(NULL, d, req->req.length, DMA_TO_DEVICE);
969 }
970
971 static void in_ep_fifo_handler(struct fusb300_ep *ep)
972 {
973 struct fusb300_request *req = list_entry(ep->queue.next,
974 struct fusb300_request, queue);
975
976 if (req->req.length)
977 fusb300_set_idma(ep, req);
978 done(ep, req, 0);
979 }
980
981 static void out_ep_fifo_handler(struct fusb300_ep *ep)
982 {
983 struct fusb300 *fusb300 = ep->fusb300;
984 struct fusb300_request *req = list_entry(ep->queue.next,
985 struct fusb300_request, queue);
986 u32 reg = ioread32(fusb300->reg + FUSB300_OFFSET_EPFFR(ep->epnum));
987 u32 length = reg & FUSB300_FFR_BYCNT;
988
989 fusb300_rdfifo(ep, req, length);
990
991 /* finish out transfer */
992 if ((req->req.length == req->req.actual) || (length < ep->ep.maxpacket))
993 done(ep, req, 0);
994 }
995
996 static void check_device_mode(struct fusb300 *fusb300)
997 {
998 u32 reg = ioread32(fusb300->reg + FUSB300_OFFSET_GCR);
999
1000 switch (reg & FUSB300_GCR_DEVEN_MSK) {
1001 case FUSB300_GCR_DEVEN_SS:
1002 fusb300->gadget.speed = USB_SPEED_SUPER;
1003 break;
1004 case FUSB300_GCR_DEVEN_HS:
1005 fusb300->gadget.speed = USB_SPEED_HIGH;
1006 break;
1007 case FUSB300_GCR_DEVEN_FS:
1008 fusb300->gadget.speed = USB_SPEED_FULL;
1009 break;
1010 default:
1011 fusb300->gadget.speed = USB_SPEED_UNKNOWN;
1012 break;
1013 }
1014 printk(KERN_INFO "dev_mode = %d\n", (reg & FUSB300_GCR_DEVEN_MSK));
1015 }
1016
1017
1018 static void fusb300_ep0out(struct fusb300 *fusb300)
1019 {
1020 struct fusb300_ep *ep = fusb300->ep[0];
1021 u32 reg;
1022
1023 if (!list_empty(&ep->queue)) {
1024 struct fusb300_request *req;
1025
1026 req = list_first_entry(&ep->queue,
1027 struct fusb300_request, queue);
1028 if (req->req.length)
1029 fusb300_rdcxf(ep->fusb300, req->req.buf,
1030 req->req.length);
1031 done(ep, req, 0);
1032 reg = ioread32(fusb300->reg + FUSB300_OFFSET_IGER1);
1033 reg &= ~FUSB300_IGER1_CX_OUT_INT;
1034 iowrite32(reg, fusb300->reg + FUSB300_OFFSET_IGER1);
1035 } else
1036 pr_err("%s : empty queue\n", __func__);
1037 }
1038
1039 static void fusb300_ep0in(struct fusb300 *fusb300)
1040 {
1041 struct fusb300_request *req;
1042 struct fusb300_ep *ep = fusb300->ep[0];
1043
1044 if ((!list_empty(&ep->queue)) && (fusb300->ep0_dir)) {
1045 req = list_entry(ep->queue.next,
1046 struct fusb300_request, queue);
1047 if (req->req.length)
1048 fusb300_wrcxf(ep, req);
1049 if ((req->req.length - req->req.actual) < ep->ep.maxpacket)
1050 done(ep, req, 0);
1051 } else
1052 fusb300_set_cxdone(fusb300);
1053 }
1054
1055 static void fusb300_grp2_handler(void)
1056 {
1057 }
1058
1059 static void fusb300_grp3_handler(void)
1060 {
1061 }
1062
1063 static void fusb300_grp4_handler(void)
1064 {
1065 }
1066
1067 static void fusb300_grp5_handler(void)
1068 {
1069 }
1070
1071 static irqreturn_t fusb300_irq(int irq, void *_fusb300)
1072 {
1073 struct fusb300 *fusb300 = _fusb300;
1074 u32 int_grp1 = ioread32(fusb300->reg + FUSB300_OFFSET_IGR1);
1075 u32 int_grp1_en = ioread32(fusb300->reg + FUSB300_OFFSET_IGER1);
1076 u32 int_grp0 = ioread32(fusb300->reg + FUSB300_OFFSET_IGR0);
1077 u32 int_grp0_en = ioread32(fusb300->reg + FUSB300_OFFSET_IGER0);
1078 struct usb_ctrlrequest ctrl;
1079 u8 in;
1080 u32 reg;
1081 int i;
1082
1083 spin_lock(&fusb300->lock);
1084
1085 int_grp1 &= int_grp1_en;
1086 int_grp0 &= int_grp0_en;
1087
1088 if (int_grp1 & FUSB300_IGR1_WARM_RST_INT) {
1089 fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1,
1090 FUSB300_IGR1_WARM_RST_INT);
1091 printk(KERN_INFO"fusb300_warmreset\n");
1092 fusb300_reset();
1093 }
1094
1095 if (int_grp1 & FUSB300_IGR1_HOT_RST_INT) {
1096 fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1,
1097 FUSB300_IGR1_HOT_RST_INT);
1098 printk(KERN_INFO"fusb300_hotreset\n");
1099 fusb300_reset();
1100 }
1101
1102 if (int_grp1 & FUSB300_IGR1_USBRST_INT) {
1103 fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1,
1104 FUSB300_IGR1_USBRST_INT);
1105 fusb300_reset();
1106 }
1107 /* COMABT_INT has a highest priority */
1108
1109 if (int_grp1 & FUSB300_IGR1_CX_COMABT_INT) {
1110 fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1,
1111 FUSB300_IGR1_CX_COMABT_INT);
1112 printk(KERN_INFO"fusb300_ep0abt\n");
1113 }
1114
1115 if (int_grp1 & FUSB300_IGR1_VBUS_CHG_INT) {
1116 fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1,
1117 FUSB300_IGR1_VBUS_CHG_INT);
1118 printk(KERN_INFO"fusb300_vbus_change\n");
1119 }
1120
1121 if (int_grp1 & FUSB300_IGR1_U3_EXIT_FAIL_INT) {
1122 fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1,
1123 FUSB300_IGR1_U3_EXIT_FAIL_INT);
1124 }
1125
1126 if (int_grp1 & FUSB300_IGR1_U2_EXIT_FAIL_INT) {
1127 fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1,
1128 FUSB300_IGR1_U2_EXIT_FAIL_INT);
1129 }
1130
1131 if (int_grp1 & FUSB300_IGR1_U1_EXIT_FAIL_INT) {
1132 fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1,
1133 FUSB300_IGR1_U1_EXIT_FAIL_INT);
1134 }
1135
1136 if (int_grp1 & FUSB300_IGR1_U2_ENTRY_FAIL_INT) {
1137 fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1,
1138 FUSB300_IGR1_U2_ENTRY_FAIL_INT);
1139 }
1140
1141 if (int_grp1 & FUSB300_IGR1_U1_ENTRY_FAIL_INT) {
1142 fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1,
1143 FUSB300_IGR1_U1_ENTRY_FAIL_INT);
1144 }
1145
1146 if (int_grp1 & FUSB300_IGR1_U3_EXIT_INT) {
1147 fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1,
1148 FUSB300_IGR1_U3_EXIT_INT);
1149 printk(KERN_INFO "FUSB300_IGR1_U3_EXIT_INT\n");
1150 }
1151
1152 if (int_grp1 & FUSB300_IGR1_U2_EXIT_INT) {
1153 fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1,
1154 FUSB300_IGR1_U2_EXIT_INT);
1155 printk(KERN_INFO "FUSB300_IGR1_U2_EXIT_INT\n");
1156 }
1157
1158 if (int_grp1 & FUSB300_IGR1_U1_EXIT_INT) {
1159 fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1,
1160 FUSB300_IGR1_U1_EXIT_INT);
1161 printk(KERN_INFO "FUSB300_IGR1_U1_EXIT_INT\n");
1162 }
1163
1164 if (int_grp1 & FUSB300_IGR1_U3_ENTRY_INT) {
1165 fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1,
1166 FUSB300_IGR1_U3_ENTRY_INT);
1167 printk(KERN_INFO "FUSB300_IGR1_U3_ENTRY_INT\n");
1168 fusb300_enable_bit(fusb300, FUSB300_OFFSET_SSCR1,
1169 FUSB300_SSCR1_GO_U3_DONE);
1170 }
1171
1172 if (int_grp1 & FUSB300_IGR1_U2_ENTRY_INT) {
1173 fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1,
1174 FUSB300_IGR1_U2_ENTRY_INT);
1175 printk(KERN_INFO "FUSB300_IGR1_U2_ENTRY_INT\n");
1176 }
1177
1178 if (int_grp1 & FUSB300_IGR1_U1_ENTRY_INT) {
1179 fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1,
1180 FUSB300_IGR1_U1_ENTRY_INT);
1181 printk(KERN_INFO "FUSB300_IGR1_U1_ENTRY_INT\n");
1182 }
1183
1184 if (int_grp1 & FUSB300_IGR1_RESM_INT) {
1185 fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1,
1186 FUSB300_IGR1_RESM_INT);
1187 printk(KERN_INFO "fusb300_resume\n");
1188 }
1189
1190 if (int_grp1 & FUSB300_IGR1_SUSP_INT) {
1191 fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1,
1192 FUSB300_IGR1_SUSP_INT);
1193 printk(KERN_INFO "fusb300_suspend\n");
1194 }
1195
1196 if (int_grp1 & FUSB300_IGR1_HS_LPM_INT) {
1197 fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1,
1198 FUSB300_IGR1_HS_LPM_INT);
1199 printk(KERN_INFO "fusb300_HS_LPM_INT\n");
1200 }
1201
1202 if (int_grp1 & FUSB300_IGR1_DEV_MODE_CHG_INT) {
1203 fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1,
1204 FUSB300_IGR1_DEV_MODE_CHG_INT);
1205 check_device_mode(fusb300);
1206 }
1207
1208 if (int_grp1 & FUSB300_IGR1_CX_COMFAIL_INT) {
1209 fusb300_set_cxstall(fusb300);
1210 printk(KERN_INFO "fusb300_ep0fail\n");
1211 }
1212
1213 if (int_grp1 & FUSB300_IGR1_CX_SETUP_INT) {
1214 printk(KERN_INFO "fusb300_ep0setup\n");
1215 if (setup_packet(fusb300, &ctrl)) {
1216 spin_unlock(&fusb300->lock);
1217 if (fusb300->driver->setup(&fusb300->gadget, &ctrl) < 0)
1218 fusb300_set_cxstall(fusb300);
1219 spin_lock(&fusb300->lock);
1220 }
1221 }
1222
1223 if (int_grp1 & FUSB300_IGR1_CX_CMDEND_INT)
1224 printk(KERN_INFO "fusb300_cmdend\n");
1225
1226
1227 if (int_grp1 & FUSB300_IGR1_CX_OUT_INT) {
1228 printk(KERN_INFO "fusb300_cxout\n");
1229 fusb300_ep0out(fusb300);
1230 }
1231
1232 if (int_grp1 & FUSB300_IGR1_CX_IN_INT) {
1233 printk(KERN_INFO "fusb300_cxin\n");
1234 fusb300_ep0in(fusb300);
1235 }
1236
1237 if (int_grp1 & FUSB300_IGR1_INTGRP5)
1238 fusb300_grp5_handler();
1239
1240 if (int_grp1 & FUSB300_IGR1_INTGRP4)
1241 fusb300_grp4_handler();
1242
1243 if (int_grp1 & FUSB300_IGR1_INTGRP3)
1244 fusb300_grp3_handler();
1245
1246 if (int_grp1 & FUSB300_IGR1_INTGRP2)
1247 fusb300_grp2_handler();
1248
1249 if (int_grp0) {
1250 for (i = 1; i < FUSB300_MAX_NUM_EP; i++) {
1251 if (int_grp0 & FUSB300_IGR0_EPn_FIFO_INT(i)) {
1252 reg = ioread32(fusb300->reg +
1253 FUSB300_OFFSET_EPSET1(i));
1254 in = (reg & FUSB300_EPSET1_DIRIN) ? 1 : 0;
1255 if (in)
1256 in_ep_fifo_handler(fusb300->ep[i]);
1257 else
1258 out_ep_fifo_handler(fusb300->ep[i]);
1259 }
1260 }
1261 }
1262
1263 spin_unlock(&fusb300->lock);
1264
1265 return IRQ_HANDLED;
1266 }
1267
1268 static void fusb300_set_u2_timeout(struct fusb300 *fusb300,
1269 u32 time)
1270 {
1271 u32 reg;
1272
1273 reg = ioread32(fusb300->reg + FUSB300_OFFSET_TT);
1274 reg &= ~0xff;
1275 reg |= FUSB300_SSCR2_U2TIMEOUT(time);
1276
1277 iowrite32(reg, fusb300->reg + FUSB300_OFFSET_TT);
1278 }
1279
1280 static void fusb300_set_u1_timeout(struct fusb300 *fusb300,
1281 u32 time)
1282 {
1283 u32 reg;
1284
1285 reg = ioread32(fusb300->reg + FUSB300_OFFSET_TT);
1286 reg &= ~(0xff << 8);
1287 reg |= FUSB300_SSCR2_U1TIMEOUT(time);
1288
1289 iowrite32(reg, fusb300->reg + FUSB300_OFFSET_TT);
1290 }
1291
1292 static void init_controller(struct fusb300 *fusb300)
1293 {
1294 u32 reg;
1295 u32 mask = 0;
1296 u32 val = 0;
1297
1298 /* split on */
1299 mask = val = FUSB300_AHBBCR_S0_SPLIT_ON | FUSB300_AHBBCR_S1_SPLIT_ON;
1300 reg = ioread32(fusb300->reg + FUSB300_OFFSET_AHBCR);
1301 reg &= ~mask;
1302 reg |= val;
1303 iowrite32(reg, fusb300->reg + FUSB300_OFFSET_AHBCR);
1304
1305 /* enable high-speed LPM */
1306 mask = val = FUSB300_HSCR_HS_LPM_PERMIT;
1307 reg = ioread32(fusb300->reg + FUSB300_OFFSET_HSCR);
1308 reg &= ~mask;
1309 reg |= val;
1310 iowrite32(reg, fusb300->reg + FUSB300_OFFSET_HSCR);
1311
1312 /*set u1 u2 timmer*/
1313 fusb300_set_u2_timeout(fusb300, 0xff);
1314 fusb300_set_u1_timeout(fusb300, 0xff);
1315
1316 /* enable all grp1 interrupt */
1317 iowrite32(0xcfffff9f, fusb300->reg + FUSB300_OFFSET_IGER1);
1318 }
1319 /*------------------------------------------------------------------------*/
1320 static struct fusb300 *the_controller;
1321
1322 static int fusb300_udc_start(struct usb_gadget_driver *driver,
1323 int (*bind)(struct usb_gadget *))
1324 {
1325 struct fusb300 *fusb300 = the_controller;
1326 int retval;
1327
1328 if (!driver
1329 || driver->speed < USB_SPEED_FULL
1330 || !bind
1331 || !driver->setup)
1332 return -EINVAL;
1333
1334 if (!fusb300)
1335 return -ENODEV;
1336
1337 if (fusb300->driver)
1338 return -EBUSY;
1339
1340 /* hook up the driver */
1341 driver->driver.bus = NULL;
1342 fusb300->driver = driver;
1343 fusb300->gadget.dev.driver = &driver->driver;
1344
1345 retval = device_add(&fusb300->gadget.dev);
1346 if (retval) {
1347 pr_err("device_add error (%d)\n", retval);
1348 goto error;
1349 }
1350
1351 retval = bind(&fusb300->gadget);
1352 if (retval) {
1353 pr_err("bind to driver error (%d)\n", retval);
1354 device_del(&fusb300->gadget.dev);
1355 goto error;
1356 }
1357
1358 return 0;
1359
1360 error:
1361 fusb300->driver = NULL;
1362 fusb300->gadget.dev.driver = NULL;
1363
1364 return retval;
1365 }
1366
1367 static int fusb300_udc_stop(struct usb_gadget_driver *driver)
1368 {
1369 struct fusb300 *fusb300 = the_controller;
1370
1371 if (driver != fusb300->driver || !driver->unbind)
1372 return -EINVAL;
1373
1374 driver->unbind(&fusb300->gadget);
1375 fusb300->gadget.dev.driver = NULL;
1376
1377 init_controller(fusb300);
1378 device_del(&fusb300->gadget.dev);
1379 fusb300->driver = NULL;
1380
1381 return 0;
1382 }
1383 /*--------------------------------------------------------------------------*/
1384
1385 static int fusb300_udc_pullup(struct usb_gadget *_gadget, int is_active)
1386 {
1387 return 0;
1388 }
1389
1390 static struct usb_gadget_ops fusb300_gadget_ops = {
1391 .pullup = fusb300_udc_pullup,
1392 .start = fusb300_udc_start,
1393 .stop = fusb300_udc_stop,
1394 };
1395
1396 static int __exit fusb300_remove(struct platform_device *pdev)
1397 {
1398 struct fusb300 *fusb300 = dev_get_drvdata(&pdev->dev);
1399
1400 usb_del_gadget_udc(&fusb300->gadget);
1401 iounmap(fusb300->reg);
1402 free_irq(platform_get_irq(pdev, 0), fusb300);
1403
1404 fusb300_free_request(&fusb300->ep[0]->ep, fusb300->ep0_req);
1405 kfree(fusb300);
1406
1407 return 0;
1408 }
1409
1410 static int __init fusb300_probe(struct platform_device *pdev)
1411 {
1412 struct resource *res, *ires, *ires1;
1413 void __iomem *reg = NULL;
1414 struct fusb300 *fusb300 = NULL;
1415 struct fusb300_ep *_ep[FUSB300_MAX_NUM_EP];
1416 int ret = 0;
1417 int i;
1418
1419 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1420 if (!res) {
1421 ret = -ENODEV;
1422 pr_err("platform_get_resource error.\n");
1423 goto clean_up;
1424 }
1425
1426 ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1427 if (!ires) {
1428 ret = -ENODEV;
1429 dev_err(&pdev->dev,
1430 "platform_get_resource IORESOURCE_IRQ error.\n");
1431 goto clean_up;
1432 }
1433
1434 ires1 = platform_get_resource(pdev, IORESOURCE_IRQ, 1);
1435 if (!ires1) {
1436 ret = -ENODEV;
1437 dev_err(&pdev->dev,
1438 "platform_get_resource IORESOURCE_IRQ 1 error.\n");
1439 goto clean_up;
1440 }
1441
1442 reg = ioremap(res->start, resource_size(res));
1443 if (reg == NULL) {
1444 ret = -ENOMEM;
1445 pr_err("ioremap error.\n");
1446 goto clean_up;
1447 }
1448
1449 /* initialize udc */
1450 fusb300 = kzalloc(sizeof(struct fusb300), GFP_KERNEL);
1451 if (fusb300 == NULL) {
1452 pr_err("kzalloc error\n");
1453 goto clean_up;
1454 }
1455
1456 for (i = 0; i < FUSB300_MAX_NUM_EP; i++) {
1457 _ep[i] = kzalloc(sizeof(struct fusb300_ep), GFP_KERNEL);
1458 if (_ep[i] == NULL) {
1459 pr_err("_ep kzalloc error\n");
1460 goto clean_up;
1461 }
1462 fusb300->ep[i] = _ep[i];
1463 }
1464
1465 spin_lock_init(&fusb300->lock);
1466
1467 dev_set_drvdata(&pdev->dev, fusb300);
1468
1469 fusb300->gadget.ops = &fusb300_gadget_ops;
1470
1471 device_initialize(&fusb300->gadget.dev);
1472
1473 dev_set_name(&fusb300->gadget.dev, "gadget");
1474
1475 fusb300->gadget.is_dualspeed = 1;
1476 fusb300->gadget.dev.parent = &pdev->dev;
1477 fusb300->gadget.dev.dma_mask = pdev->dev.dma_mask;
1478 fusb300->gadget.dev.release = pdev->dev.release;
1479 fusb300->gadget.name = udc_name;
1480 fusb300->reg = reg;
1481
1482 ret = request_irq(ires->start, fusb300_irq, IRQF_DISABLED | IRQF_SHARED,
1483 udc_name, fusb300);
1484 if (ret < 0) {
1485 pr_err("request_irq error (%d)\n", ret);
1486 goto clean_up;
1487 }
1488
1489 ret = request_irq(ires1->start, fusb300_irq,
1490 IRQF_DISABLED | IRQF_SHARED, udc_name, fusb300);
1491 if (ret < 0) {
1492 pr_err("request_irq1 error (%d)\n", ret);
1493 goto clean_up;
1494 }
1495
1496 INIT_LIST_HEAD(&fusb300->gadget.ep_list);
1497
1498 for (i = 0; i < FUSB300_MAX_NUM_EP ; i++) {
1499 struct fusb300_ep *ep = fusb300->ep[i];
1500
1501 if (i != 0) {
1502 INIT_LIST_HEAD(&fusb300->ep[i]->ep.ep_list);
1503 list_add_tail(&fusb300->ep[i]->ep.ep_list,
1504 &fusb300->gadget.ep_list);
1505 }
1506 ep->fusb300 = fusb300;
1507 INIT_LIST_HEAD(&ep->queue);
1508 ep->ep.name = fusb300_ep_name[i];
1509 ep->ep.ops = &fusb300_ep_ops;
1510 ep->ep.maxpacket = HS_BULK_MAX_PACKET_SIZE;
1511 }
1512 fusb300->ep[0]->ep.maxpacket = HS_CTL_MAX_PACKET_SIZE;
1513 fusb300->ep[0]->epnum = 0;
1514 fusb300->gadget.ep0 = &fusb300->ep[0]->ep;
1515 INIT_LIST_HEAD(&fusb300->gadget.ep0->ep_list);
1516
1517 the_controller = fusb300;
1518
1519 fusb300->ep0_req = fusb300_alloc_request(&fusb300->ep[0]->ep,
1520 GFP_KERNEL);
1521 if (fusb300->ep0_req == NULL)
1522 goto clean_up3;
1523
1524 init_controller(fusb300);
1525 ret = usb_add_gadget_udc(&pdev->dev, &fusb300->gadget);
1526 if (ret)
1527 goto err_add_udc;
1528
1529 dev_info(&pdev->dev, "version %s\n", DRIVER_VERSION);
1530
1531 return 0;
1532 err_add_udc:
1533 fusb300_free_request(&fusb300->ep[0]->ep, fusb300->ep0_req);
1534
1535 clean_up3:
1536 free_irq(ires->start, fusb300);
1537
1538 clean_up:
1539 if (fusb300) {
1540 if (fusb300->ep0_req)
1541 fusb300_free_request(&fusb300->ep[0]->ep,
1542 fusb300->ep0_req);
1543 kfree(fusb300);
1544 }
1545 if (reg)
1546 iounmap(reg);
1547
1548 return ret;
1549 }
1550
1551 static struct platform_driver fusb300_driver = {
1552 .remove = __exit_p(fusb300_remove),
1553 .driver = {
1554 .name = (char *) udc_name,
1555 .owner = THIS_MODULE,
1556 },
1557 };
1558
1559 static int __init fusb300_udc_init(void)
1560 {
1561 return platform_driver_probe(&fusb300_driver, fusb300_probe);
1562 }
1563
1564 module_init(fusb300_udc_init);
1565
1566 static void __exit fusb300_udc_cleanup(void)
1567 {
1568 platform_driver_unregister(&fusb300_driver);
1569 }
1570 module_exit(fusb300_udc_cleanup);
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