1
2
3
4
5
6
7
8
9
10
11
12
13
14
15#define pr_fmt(fmt) "s3c2410_udc: " fmt
16
17#include <linux/module.h>
18#include <linux/kernel.h>
19#include <linux/delay.h>
20#include <linux/ioport.h>
21#include <linux/sched.h>
22#include <linux/slab.h>
23#include <linux/errno.h>
24#include <linux/init.h>
25#include <linux/timer.h>
26#include <linux/list.h>
27#include <linux/interrupt.h>
28#include <linux/platform_device.h>
29#include <linux/clk.h>
30#include <linux/gpio.h>
31#include <linux/prefetch.h>
32#include <linux/io.h>
33
34#include <linux/debugfs.h>
35#include <linux/seq_file.h>
36
37#include <linux/usb.h>
38#include <linux/usb/gadget.h>
39
40#include <asm/byteorder.h>
41#include <asm/irq.h>
42#include <asm/unaligned.h>
43#include <mach/irqs.h>
44
45#include <mach/hardware.h>
46
47#include <plat/regs-udc.h>
48#include <linux/platform_data/usb-s3c2410_udc.h>
49
50
51#include "s3c2410_udc.h"
52
53#define DRIVER_DESC "S3C2410 USB Device Controller Gadget"
54#define DRIVER_VERSION "29 Apr 2007"
55#define DRIVER_AUTHOR "Herbert Pötzl <herbert@13thfloor.at>, " \
56 "Arnaud Patard <arnaud.patard@rtp-net.org>"
57
58static const char gadget_name[] = "s3c2410_udc";
59static const char driver_desc[] = DRIVER_DESC;
60
61static struct s3c2410_udc *the_controller;
62static struct clk *udc_clock;
63static struct clk *usb_bus_clock;
64static void __iomem *base_addr;
65static u64 rsrc_start;
66static u64 rsrc_len;
67static struct dentry *s3c2410_udc_debugfs_root;
68
69static inline u32 udc_read(u32 reg)
70{
71 return readb(base_addr + reg);
72}
73
74static inline void udc_write(u32 value, u32 reg)
75{
76 writeb(value, base_addr + reg);
77}
78
79static inline void udc_writeb(void __iomem *base, u32 value, u32 reg)
80{
81 writeb(value, base + reg);
82}
83
84static struct s3c2410_udc_mach_info *udc_info;
85
86
87#define DEBUG_NORMAL 1
88#define DEBUG_VERBOSE 2
89
90#ifdef CONFIG_USB_S3C2410_DEBUG
91#define USB_S3C2410_DEBUG_LEVEL 0
92
93static uint32_t s3c2410_ticks = 0;
94
95static int dprintk(int level, const char *fmt, ...)
96{
97 static char printk_buf[1024];
98 static long prevticks;
99 static int invocation;
100 va_list args;
101 int len;
102
103 if (level > USB_S3C2410_DEBUG_LEVEL)
104 return 0;
105
106 if (s3c2410_ticks != prevticks) {
107 prevticks = s3c2410_ticks;
108 invocation = 0;
109 }
110
111 len = scnprintf(printk_buf,
112 sizeof(printk_buf), "%1lu.%02d USB: ",
113 prevticks, invocation++);
114
115 va_start(args, fmt);
116 len = vscnprintf(printk_buf+len,
117 sizeof(printk_buf)-len, fmt, args);
118 va_end(args);
119
120 pr_debug("%s", printk_buf);
121 return len;
122}
123#else
124static int dprintk(int level, const char *fmt, ...)
125{
126 return 0;
127}
128#endif
129static int s3c2410_udc_debugfs_seq_show(struct seq_file *m, void *p)
130{
131 u32 addr_reg, pwr_reg, ep_int_reg, usb_int_reg;
132 u32 ep_int_en_reg, usb_int_en_reg, ep0_csr;
133 u32 ep1_i_csr1, ep1_i_csr2, ep1_o_csr1, ep1_o_csr2;
134 u32 ep2_i_csr1, ep2_i_csr2, ep2_o_csr1, ep2_o_csr2;
135
136 addr_reg = udc_read(S3C2410_UDC_FUNC_ADDR_REG);
137 pwr_reg = udc_read(S3C2410_UDC_PWR_REG);
138 ep_int_reg = udc_read(S3C2410_UDC_EP_INT_REG);
139 usb_int_reg = udc_read(S3C2410_UDC_USB_INT_REG);
140 ep_int_en_reg = udc_read(S3C2410_UDC_EP_INT_EN_REG);
141 usb_int_en_reg = udc_read(S3C2410_UDC_USB_INT_EN_REG);
142 udc_write(0, S3C2410_UDC_INDEX_REG);
143 ep0_csr = udc_read(S3C2410_UDC_IN_CSR1_REG);
144 udc_write(1, S3C2410_UDC_INDEX_REG);
145 ep1_i_csr1 = udc_read(S3C2410_UDC_IN_CSR1_REG);
146 ep1_i_csr2 = udc_read(S3C2410_UDC_IN_CSR2_REG);
147 ep1_o_csr1 = udc_read(S3C2410_UDC_IN_CSR1_REG);
148 ep1_o_csr2 = udc_read(S3C2410_UDC_IN_CSR2_REG);
149 udc_write(2, S3C2410_UDC_INDEX_REG);
150 ep2_i_csr1 = udc_read(S3C2410_UDC_IN_CSR1_REG);
151 ep2_i_csr2 = udc_read(S3C2410_UDC_IN_CSR2_REG);
152 ep2_o_csr1 = udc_read(S3C2410_UDC_IN_CSR1_REG);
153 ep2_o_csr2 = udc_read(S3C2410_UDC_IN_CSR2_REG);
154
155 seq_printf(m, "FUNC_ADDR_REG : 0x%04X\n"
156 "PWR_REG : 0x%04X\n"
157 "EP_INT_REG : 0x%04X\n"
158 "USB_INT_REG : 0x%04X\n"
159 "EP_INT_EN_REG : 0x%04X\n"
160 "USB_INT_EN_REG : 0x%04X\n"
161 "EP0_CSR : 0x%04X\n"
162 "EP1_I_CSR1 : 0x%04X\n"
163 "EP1_I_CSR2 : 0x%04X\n"
164 "EP1_O_CSR1 : 0x%04X\n"
165 "EP1_O_CSR2 : 0x%04X\n"
166 "EP2_I_CSR1 : 0x%04X\n"
167 "EP2_I_CSR2 : 0x%04X\n"
168 "EP2_O_CSR1 : 0x%04X\n"
169 "EP2_O_CSR2 : 0x%04X\n",
170 addr_reg, pwr_reg, ep_int_reg, usb_int_reg,
171 ep_int_en_reg, usb_int_en_reg, ep0_csr,
172 ep1_i_csr1, ep1_i_csr2, ep1_o_csr1, ep1_o_csr2,
173 ep2_i_csr1, ep2_i_csr2, ep2_o_csr1, ep2_o_csr2
174 );
175
176 return 0;
177}
178
179static int s3c2410_udc_debugfs_fops_open(struct inode *inode,
180 struct file *file)
181{
182 return single_open(file, s3c2410_udc_debugfs_seq_show, NULL);
183}
184
185static const struct file_operations s3c2410_udc_debugfs_fops = {
186 .open = s3c2410_udc_debugfs_fops_open,
187 .read = seq_read,
188 .llseek = seq_lseek,
189 .release = single_release,
190 .owner = THIS_MODULE,
191};
192
193
194
195static inline void s3c2410_udc_clear_ep0_opr(void __iomem *base)
196{
197 udc_writeb(base, S3C2410_UDC_INDEX_EP0, S3C2410_UDC_INDEX_REG);
198 udc_writeb(base, S3C2410_UDC_EP0_CSR_SOPKTRDY,
199 S3C2410_UDC_EP0_CSR_REG);
200}
201
202static inline void s3c2410_udc_clear_ep0_sst(void __iomem *base)
203{
204 udc_writeb(base, S3C2410_UDC_INDEX_EP0, S3C2410_UDC_INDEX_REG);
205 writeb(0x00, base + S3C2410_UDC_EP0_CSR_REG);
206}
207
208static inline void s3c2410_udc_clear_ep0_se(void __iomem *base)
209{
210 udc_writeb(base, S3C2410_UDC_INDEX_EP0, S3C2410_UDC_INDEX_REG);
211 udc_writeb(base, S3C2410_UDC_EP0_CSR_SSE, S3C2410_UDC_EP0_CSR_REG);
212}
213
214static inline void s3c2410_udc_set_ep0_ipr(void __iomem *base)
215{
216 udc_writeb(base, S3C2410_UDC_INDEX_EP0, S3C2410_UDC_INDEX_REG);
217 udc_writeb(base, S3C2410_UDC_EP0_CSR_IPKRDY, S3C2410_UDC_EP0_CSR_REG);
218}
219
220static inline void s3c2410_udc_set_ep0_de(void __iomem *base)
221{
222 udc_writeb(base, S3C2410_UDC_INDEX_EP0, S3C2410_UDC_INDEX_REG);
223 udc_writeb(base, S3C2410_UDC_EP0_CSR_DE, S3C2410_UDC_EP0_CSR_REG);
224}
225
226inline void s3c2410_udc_set_ep0_ss(void __iomem *b)
227{
228 udc_writeb(b, S3C2410_UDC_INDEX_EP0, S3C2410_UDC_INDEX_REG);
229 udc_writeb(b, S3C2410_UDC_EP0_CSR_SENDSTL, S3C2410_UDC_EP0_CSR_REG);
230}
231
232static inline void s3c2410_udc_set_ep0_de_out(void __iomem *base)
233{
234 udc_writeb(base, S3C2410_UDC_INDEX_EP0, S3C2410_UDC_INDEX_REG);
235
236 udc_writeb(base, (S3C2410_UDC_EP0_CSR_SOPKTRDY
237 | S3C2410_UDC_EP0_CSR_DE),
238 S3C2410_UDC_EP0_CSR_REG);
239}
240
241static inline void s3c2410_udc_set_ep0_sse_out(void __iomem *base)
242{
243 udc_writeb(base, S3C2410_UDC_INDEX_EP0, S3C2410_UDC_INDEX_REG);
244 udc_writeb(base, (S3C2410_UDC_EP0_CSR_SOPKTRDY
245 | S3C2410_UDC_EP0_CSR_SSE),
246 S3C2410_UDC_EP0_CSR_REG);
247}
248
249static inline void s3c2410_udc_set_ep0_de_in(void __iomem *base)
250{
251 udc_writeb(base, S3C2410_UDC_INDEX_EP0, S3C2410_UDC_INDEX_REG);
252 udc_writeb(base, (S3C2410_UDC_EP0_CSR_IPKRDY
253 | S3C2410_UDC_EP0_CSR_DE),
254 S3C2410_UDC_EP0_CSR_REG);
255}
256
257
258
259
260
261
262static void s3c2410_udc_done(struct s3c2410_ep *ep,
263 struct s3c2410_request *req, int status)
264{
265 unsigned halted = ep->halted;
266
267 list_del_init(&req->queue);
268
269 if (likely(req->req.status == -EINPROGRESS))
270 req->req.status = status;
271 else
272 status = req->req.status;
273
274 ep->halted = 1;
275 usb_gadget_giveback_request(&ep->ep, &req->req);
276 ep->halted = halted;
277}
278
279static void s3c2410_udc_nuke(struct s3c2410_udc *udc,
280 struct s3c2410_ep *ep, int status)
281{
282
283 if (&ep->queue == NULL)
284 return;
285
286 while (!list_empty(&ep->queue)) {
287 struct s3c2410_request *req;
288 req = list_entry(ep->queue.next, struct s3c2410_request,
289 queue);
290 s3c2410_udc_done(ep, req, status);
291 }
292}
293
294static inline void s3c2410_udc_clear_ep_state(struct s3c2410_udc *dev)
295{
296 unsigned i;
297
298
299
300
301
302 for (i = 1; i < S3C2410_ENDPOINTS; i++)
303 s3c2410_udc_nuke(dev, &dev->ep[i], -ECONNABORTED);
304}
305
306static inline int s3c2410_udc_fifo_count_out(void)
307{
308 int tmp;
309
310 tmp = udc_read(S3C2410_UDC_OUT_FIFO_CNT2_REG) << 8;
311 tmp |= udc_read(S3C2410_UDC_OUT_FIFO_CNT1_REG);
312 return tmp;
313}
314
315
316
317
318static inline int s3c2410_udc_write_packet(int fifo,
319 struct s3c2410_request *req,
320 unsigned max)
321{
322 unsigned len = min(req->req.length - req->req.actual, max);
323 u8 *buf = req->req.buf + req->req.actual;
324
325 prefetch(buf);
326
327 dprintk(DEBUG_VERBOSE, "%s %d %d %d %d\n", __func__,
328 req->req.actual, req->req.length, len, req->req.actual + len);
329
330 req->req.actual += len;
331
332 udelay(5);
333 writesb(base_addr + fifo, buf, len);
334 return len;
335}
336
337
338
339
340
341
342static int s3c2410_udc_write_fifo(struct s3c2410_ep *ep,
343 struct s3c2410_request *req)
344{
345 unsigned count;
346 int is_last;
347 u32 idx;
348 int fifo_reg;
349 u32 ep_csr;
350
351 idx = ep->bEndpointAddress & 0x7F;
352 switch (idx) {
353 default:
354 idx = 0;
355 case 0:
356 fifo_reg = S3C2410_UDC_EP0_FIFO_REG;
357 break;
358 case 1:
359 fifo_reg = S3C2410_UDC_EP1_FIFO_REG;
360 break;
361 case 2:
362 fifo_reg = S3C2410_UDC_EP2_FIFO_REG;
363 break;
364 case 3:
365 fifo_reg = S3C2410_UDC_EP3_FIFO_REG;
366 break;
367 case 4:
368 fifo_reg = S3C2410_UDC_EP4_FIFO_REG;
369 break;
370 }
371
372 count = s3c2410_udc_write_packet(fifo_reg, req, ep->ep.maxpacket);
373
374
375 if (count != ep->ep.maxpacket)
376 is_last = 1;
377 else if (req->req.length != req->req.actual || req->req.zero)
378 is_last = 0;
379 else
380 is_last = 2;
381
382
383 if (idx == 0)
384 dprintk(DEBUG_NORMAL,
385 "Written ep%d %d.%d of %d b [last %d,z %d]\n",
386 idx, count, req->req.actual, req->req.length,
387 is_last, req->req.zero);
388
389 if (is_last) {
390
391
392
393 if (idx == 0) {
394
395 if (!(udc_read(S3C2410_UDC_USB_INT_REG)
396 & S3C2410_UDC_USBINT_RESET))
397 s3c2410_udc_set_ep0_de_in(base_addr);
398 ep->dev->ep0state = EP0_IDLE;
399 } else {
400 udc_write(idx, S3C2410_UDC_INDEX_REG);
401 ep_csr = udc_read(S3C2410_UDC_IN_CSR1_REG);
402 udc_write(idx, S3C2410_UDC_INDEX_REG);
403 udc_write(ep_csr | S3C2410_UDC_ICSR1_PKTRDY,
404 S3C2410_UDC_IN_CSR1_REG);
405 }
406
407 s3c2410_udc_done(ep, req, 0);
408 is_last = 1;
409 } else {
410 if (idx == 0) {
411
412 if (!(udc_read(S3C2410_UDC_USB_INT_REG)
413 & S3C2410_UDC_USBINT_RESET))
414 s3c2410_udc_set_ep0_ipr(base_addr);
415 } else {
416 udc_write(idx, S3C2410_UDC_INDEX_REG);
417 ep_csr = udc_read(S3C2410_UDC_IN_CSR1_REG);
418 udc_write(idx, S3C2410_UDC_INDEX_REG);
419 udc_write(ep_csr | S3C2410_UDC_ICSR1_PKTRDY,
420 S3C2410_UDC_IN_CSR1_REG);
421 }
422 }
423
424 return is_last;
425}
426
427static inline int s3c2410_udc_read_packet(int fifo, u8 *buf,
428 struct s3c2410_request *req, unsigned avail)
429{
430 unsigned len;
431
432 len = min(req->req.length - req->req.actual, avail);
433 req->req.actual += len;
434
435 readsb(fifo + base_addr, buf, len);
436 return len;
437}
438
439
440
441
442static int s3c2410_udc_read_fifo(struct s3c2410_ep *ep,
443 struct s3c2410_request *req)
444{
445 u8 *buf;
446 u32 ep_csr;
447 unsigned bufferspace;
448 int is_last = 1;
449 unsigned avail;
450 int fifo_count = 0;
451 u32 idx;
452 int fifo_reg;
453
454 idx = ep->bEndpointAddress & 0x7F;
455
456 switch (idx) {
457 default:
458 idx = 0;
459 case 0:
460 fifo_reg = S3C2410_UDC_EP0_FIFO_REG;
461 break;
462 case 1:
463 fifo_reg = S3C2410_UDC_EP1_FIFO_REG;
464 break;
465 case 2:
466 fifo_reg = S3C2410_UDC_EP2_FIFO_REG;
467 break;
468 case 3:
469 fifo_reg = S3C2410_UDC_EP3_FIFO_REG;
470 break;
471 case 4:
472 fifo_reg = S3C2410_UDC_EP4_FIFO_REG;
473 break;
474 }
475
476 if (!req->req.length)
477 return 1;
478
479 buf = req->req.buf + req->req.actual;
480 bufferspace = req->req.length - req->req.actual;
481 if (!bufferspace) {
482 dprintk(DEBUG_NORMAL, "%s: buffer full!\n", __func__);
483 return -1;
484 }
485
486 udc_write(idx, S3C2410_UDC_INDEX_REG);
487
488 fifo_count = s3c2410_udc_fifo_count_out();
489 dprintk(DEBUG_NORMAL, "%s fifo count : %d\n", __func__, fifo_count);
490
491 if (fifo_count > ep->ep.maxpacket)
492 avail = ep->ep.maxpacket;
493 else
494 avail = fifo_count;
495
496 fifo_count = s3c2410_udc_read_packet(fifo_reg, buf, req, avail);
497
498
499
500
501 if (idx != 0 && fifo_count < ep->ep.maxpacket) {
502 is_last = 1;
503
504 if (fifo_count != avail)
505 req->req.status = -EOVERFLOW;
506 } else {
507 is_last = (req->req.length <= req->req.actual) ? 1 : 0;
508 }
509
510 udc_write(idx, S3C2410_UDC_INDEX_REG);
511 fifo_count = s3c2410_udc_fifo_count_out();
512
513
514 if (idx == 0)
515 dprintk(DEBUG_VERBOSE, "%s fifo count : %d [last %d]\n",
516 __func__, fifo_count, is_last);
517
518 if (is_last) {
519 if (idx == 0) {
520 s3c2410_udc_set_ep0_de_out(base_addr);
521 ep->dev->ep0state = EP0_IDLE;
522 } else {
523 udc_write(idx, S3C2410_UDC_INDEX_REG);
524 ep_csr = udc_read(S3C2410_UDC_OUT_CSR1_REG);
525 udc_write(idx, S3C2410_UDC_INDEX_REG);
526 udc_write(ep_csr & ~S3C2410_UDC_OCSR1_PKTRDY,
527 S3C2410_UDC_OUT_CSR1_REG);
528 }
529
530 s3c2410_udc_done(ep, req, 0);
531 } else {
532 if (idx == 0) {
533 s3c2410_udc_clear_ep0_opr(base_addr);
534 } else {
535 udc_write(idx, S3C2410_UDC_INDEX_REG);
536 ep_csr = udc_read(S3C2410_UDC_OUT_CSR1_REG);
537 udc_write(idx, S3C2410_UDC_INDEX_REG);
538 udc_write(ep_csr & ~S3C2410_UDC_OCSR1_PKTRDY,
539 S3C2410_UDC_OUT_CSR1_REG);
540 }
541 }
542
543 return is_last;
544}
545
546static int s3c2410_udc_read_fifo_crq(struct usb_ctrlrequest *crq)
547{
548 unsigned char *outbuf = (unsigned char *)crq;
549 int bytes_read = 0;
550
551 udc_write(0, S3C2410_UDC_INDEX_REG);
552
553 bytes_read = s3c2410_udc_fifo_count_out();
554
555 dprintk(DEBUG_NORMAL, "%s: fifo_count=%d\n", __func__, bytes_read);
556
557 if (bytes_read > sizeof(struct usb_ctrlrequest))
558 bytes_read = sizeof(struct usb_ctrlrequest);
559
560 readsb(S3C2410_UDC_EP0_FIFO_REG + base_addr, outbuf, bytes_read);
561
562 dprintk(DEBUG_VERBOSE, "%s: len=%d %02x:%02x {%x,%x,%x}\n", __func__,
563 bytes_read, crq->bRequest, crq->bRequestType,
564 crq->wValue, crq->wIndex, crq->wLength);
565
566 return bytes_read;
567}
568
569static int s3c2410_udc_get_status(struct s3c2410_udc *dev,
570 struct usb_ctrlrequest *crq)
571{
572 u16 status = 0;
573 u8 ep_num = crq->wIndex & 0x7F;
574 u8 is_in = crq->wIndex & USB_DIR_IN;
575
576 switch (crq->bRequestType & USB_RECIP_MASK) {
577 case USB_RECIP_INTERFACE:
578 break;
579
580 case USB_RECIP_DEVICE:
581 status = dev->devstatus;
582 break;
583
584 case USB_RECIP_ENDPOINT:
585 if (ep_num > 4 || crq->wLength > 2)
586 return 1;
587
588 if (ep_num == 0) {
589 udc_write(0, S3C2410_UDC_INDEX_REG);
590 status = udc_read(S3C2410_UDC_IN_CSR1_REG);
591 status = status & S3C2410_UDC_EP0_CSR_SENDSTL;
592 } else {
593 udc_write(ep_num, S3C2410_UDC_INDEX_REG);
594 if (is_in) {
595 status = udc_read(S3C2410_UDC_IN_CSR1_REG);
596 status = status & S3C2410_UDC_ICSR1_SENDSTL;
597 } else {
598 status = udc_read(S3C2410_UDC_OUT_CSR1_REG);
599 status = status & S3C2410_UDC_OCSR1_SENDSTL;
600 }
601 }
602
603 status = status ? 1 : 0;
604 break;
605
606 default:
607 return 1;
608 }
609
610
611 udelay(5);
612 udc_write(status & 0xFF, S3C2410_UDC_EP0_FIFO_REG);
613 udc_write(status >> 8, S3C2410_UDC_EP0_FIFO_REG);
614 s3c2410_udc_set_ep0_de_in(base_addr);
615
616 return 0;
617}
618
619static int s3c2410_udc_set_halt(struct usb_ep *_ep, int value);
620
621static void s3c2410_udc_handle_ep0_idle(struct s3c2410_udc *dev,
622 struct s3c2410_ep *ep,
623 struct usb_ctrlrequest *crq,
624 u32 ep0csr)
625{
626 int len, ret, tmp;
627
628
629 if (!(ep0csr & S3C2410_UDC_EP0_CSR_OPKRDY))
630 return;
631
632 s3c2410_udc_nuke(dev, ep, -EPROTO);
633
634 len = s3c2410_udc_read_fifo_crq(crq);
635 if (len != sizeof(*crq)) {
636 dprintk(DEBUG_NORMAL, "setup begin: fifo READ ERROR"
637 " wanted %d bytes got %d. Stalling out...\n",
638 sizeof(*crq), len);
639 s3c2410_udc_set_ep0_ss(base_addr);
640 return;
641 }
642
643 dprintk(DEBUG_NORMAL, "bRequest = %d bRequestType %d wLength = %d\n",
644 crq->bRequest, crq->bRequestType, crq->wLength);
645
646
647 dev->req_std = (crq->bRequestType & USB_TYPE_MASK)
648 == USB_TYPE_STANDARD;
649 dev->req_config = 0;
650 dev->req_pending = 1;
651
652 switch (crq->bRequest) {
653 case USB_REQ_SET_CONFIGURATION:
654 dprintk(DEBUG_NORMAL, "USB_REQ_SET_CONFIGURATION ...\n");
655
656 if (crq->bRequestType == USB_RECIP_DEVICE) {
657 dev->req_config = 1;
658 s3c2410_udc_set_ep0_de_out(base_addr);
659 }
660 break;
661
662 case USB_REQ_SET_INTERFACE:
663 dprintk(DEBUG_NORMAL, "USB_REQ_SET_INTERFACE ...\n");
664
665 if (crq->bRequestType == USB_RECIP_INTERFACE) {
666 dev->req_config = 1;
667 s3c2410_udc_set_ep0_de_out(base_addr);
668 }
669 break;
670
671 case USB_REQ_SET_ADDRESS:
672 dprintk(DEBUG_NORMAL, "USB_REQ_SET_ADDRESS ...\n");
673
674 if (crq->bRequestType == USB_RECIP_DEVICE) {
675 tmp = crq->wValue & 0x7F;
676 dev->address = tmp;
677 udc_write((tmp | S3C2410_UDC_FUNCADDR_UPDATE),
678 S3C2410_UDC_FUNC_ADDR_REG);
679 s3c2410_udc_set_ep0_de_out(base_addr);
680 return;
681 }
682 break;
683
684 case USB_REQ_GET_STATUS:
685 dprintk(DEBUG_NORMAL, "USB_REQ_GET_STATUS ...\n");
686 s3c2410_udc_clear_ep0_opr(base_addr);
687
688 if (dev->req_std) {
689 if (!s3c2410_udc_get_status(dev, crq))
690 return;
691 }
692 break;
693
694 case USB_REQ_CLEAR_FEATURE:
695 s3c2410_udc_clear_ep0_opr(base_addr);
696
697 if (crq->bRequestType != USB_RECIP_ENDPOINT)
698 break;
699
700 if (crq->wValue != USB_ENDPOINT_HALT || crq->wLength != 0)
701 break;
702
703 s3c2410_udc_set_halt(&dev->ep[crq->wIndex & 0x7f].ep, 0);
704 s3c2410_udc_set_ep0_de_out(base_addr);
705 return;
706
707 case USB_REQ_SET_FEATURE:
708 s3c2410_udc_clear_ep0_opr(base_addr);
709
710 if (crq->bRequestType != USB_RECIP_ENDPOINT)
711 break;
712
713 if (crq->wValue != USB_ENDPOINT_HALT || crq->wLength != 0)
714 break;
715
716 s3c2410_udc_set_halt(&dev->ep[crq->wIndex & 0x7f].ep, 1);
717 s3c2410_udc_set_ep0_de_out(base_addr);
718 return;
719
720 default:
721 s3c2410_udc_clear_ep0_opr(base_addr);
722 break;
723 }
724
725 if (crq->bRequestType & USB_DIR_IN)
726 dev->ep0state = EP0_IN_DATA_PHASE;
727 else
728 dev->ep0state = EP0_OUT_DATA_PHASE;
729
730 if (!dev->driver)
731 return;
732
733
734 ret = dev->driver->setup(&dev->gadget, crq);
735 if (ret < 0) {
736 if (dev->req_config) {
737 dprintk(DEBUG_NORMAL, "config change %02x fail %d?\n",
738 crq->bRequest, ret);
739 return;
740 }
741
742 if (ret == -EOPNOTSUPP)
743 dprintk(DEBUG_NORMAL, "Operation not supported\n");
744 else
745 dprintk(DEBUG_NORMAL,
746 "dev->driver->setup failed. (%d)\n", ret);
747
748 udelay(5);
749 s3c2410_udc_set_ep0_ss(base_addr);
750 s3c2410_udc_set_ep0_de_out(base_addr);
751 dev->ep0state = EP0_IDLE;
752
753 } else if (dev->req_pending) {
754 dprintk(DEBUG_VERBOSE, "dev->req_pending... what now?\n");
755 dev->req_pending = 0;
756 }
757
758 dprintk(DEBUG_VERBOSE, "ep0state %s\n", ep0states[dev->ep0state]);
759}
760
761static void s3c2410_udc_handle_ep0(struct s3c2410_udc *dev)
762{
763 u32 ep0csr;
764 struct s3c2410_ep *ep = &dev->ep[0];
765 struct s3c2410_request *req;
766 struct usb_ctrlrequest crq;
767
768 if (list_empty(&ep->queue))
769 req = NULL;
770 else
771 req = list_entry(ep->queue.next, struct s3c2410_request, queue);
772
773
774
775
776 udc_write(0, S3C2410_UDC_INDEX_REG);
777 ep0csr = udc_read(S3C2410_UDC_IN_CSR1_REG);
778
779 dprintk(DEBUG_NORMAL, "ep0csr %x ep0state %s\n",
780 ep0csr, ep0states[dev->ep0state]);
781
782
783 if (ep0csr & S3C2410_UDC_EP0_CSR_SENTSTL) {
784 s3c2410_udc_nuke(dev, ep, -EPIPE);
785 dprintk(DEBUG_NORMAL, "... clear SENT_STALL ...\n");
786 s3c2410_udc_clear_ep0_sst(base_addr);
787 dev->ep0state = EP0_IDLE;
788 return;
789 }
790
791
792 if (ep0csr & S3C2410_UDC_EP0_CSR_SE) {
793 dprintk(DEBUG_NORMAL, "... serviced SETUP_END ...\n");
794 s3c2410_udc_nuke(dev, ep, 0);
795 s3c2410_udc_clear_ep0_se(base_addr);
796 dev->ep0state = EP0_IDLE;
797 }
798
799 switch (dev->ep0state) {
800 case EP0_IDLE:
801 s3c2410_udc_handle_ep0_idle(dev, ep, &crq, ep0csr);
802 break;
803
804 case EP0_IN_DATA_PHASE:
805 dprintk(DEBUG_NORMAL, "EP0_IN_DATA_PHASE ... what now?\n");
806 if (!(ep0csr & S3C2410_UDC_EP0_CSR_IPKRDY) && req)
807 s3c2410_udc_write_fifo(ep, req);
808 break;
809
810 case EP0_OUT_DATA_PHASE:
811 dprintk(DEBUG_NORMAL, "EP0_OUT_DATA_PHASE ... what now?\n");
812 if ((ep0csr & S3C2410_UDC_EP0_CSR_OPKRDY) && req)
813 s3c2410_udc_read_fifo(ep, req);
814 break;
815
816 case EP0_END_XFER:
817 dprintk(DEBUG_NORMAL, "EP0_END_XFER ... what now?\n");
818 dev->ep0state = EP0_IDLE;
819 break;
820
821 case EP0_STALL:
822 dprintk(DEBUG_NORMAL, "EP0_STALL ... what now?\n");
823 dev->ep0state = EP0_IDLE;
824 break;
825 }
826}
827
828
829
830
831
832static void s3c2410_udc_handle_ep(struct s3c2410_ep *ep)
833{
834 struct s3c2410_request *req;
835 int is_in = ep->bEndpointAddress & USB_DIR_IN;
836 u32 ep_csr1;
837 u32 idx;
838
839 if (likely(!list_empty(&ep->queue)))
840 req = list_entry(ep->queue.next,
841 struct s3c2410_request, queue);
842 else
843 req = NULL;
844
845 idx = ep->bEndpointAddress & 0x7F;
846
847 if (is_in) {
848 udc_write(idx, S3C2410_UDC_INDEX_REG);
849 ep_csr1 = udc_read(S3C2410_UDC_IN_CSR1_REG);
850 dprintk(DEBUG_VERBOSE, "ep%01d write csr:%02x %d\n",
851 idx, ep_csr1, req ? 1 : 0);
852
853 if (ep_csr1 & S3C2410_UDC_ICSR1_SENTSTL) {
854 dprintk(DEBUG_VERBOSE, "st\n");
855 udc_write(idx, S3C2410_UDC_INDEX_REG);
856 udc_write(ep_csr1 & ~S3C2410_UDC_ICSR1_SENTSTL,
857 S3C2410_UDC_IN_CSR1_REG);
858 return;
859 }
860
861 if (!(ep_csr1 & S3C2410_UDC_ICSR1_PKTRDY) && req)
862 s3c2410_udc_write_fifo(ep, req);
863 } else {
864 udc_write(idx, S3C2410_UDC_INDEX_REG);
865 ep_csr1 = udc_read(S3C2410_UDC_OUT_CSR1_REG);
866 dprintk(DEBUG_VERBOSE, "ep%01d rd csr:%02x\n", idx, ep_csr1);
867
868 if (ep_csr1 & S3C2410_UDC_OCSR1_SENTSTL) {
869 udc_write(idx, S3C2410_UDC_INDEX_REG);
870 udc_write(ep_csr1 & ~S3C2410_UDC_OCSR1_SENTSTL,
871 S3C2410_UDC_OUT_CSR1_REG);
872 return;
873 }
874
875 if ((ep_csr1 & S3C2410_UDC_OCSR1_PKTRDY) && req)
876 s3c2410_udc_read_fifo(ep, req);
877 }
878}
879
880#include <mach/regs-irq.h>
881
882
883
884
885static irqreturn_t s3c2410_udc_irq(int dummy, void *_dev)
886{
887 struct s3c2410_udc *dev = _dev;
888 int usb_status;
889 int usbd_status;
890 int pwr_reg;
891 int ep0csr;
892 int i;
893 u32 idx, idx2;
894 unsigned long flags;
895
896 spin_lock_irqsave(&dev->lock, flags);
897
898
899 if (!dev->driver) {
900
901 udc_write(udc_read(S3C2410_UDC_USB_INT_REG),
902 S3C2410_UDC_USB_INT_REG);
903 udc_write(udc_read(S3C2410_UDC_EP_INT_REG),
904 S3C2410_UDC_EP_INT_REG);
905 }
906
907
908 idx = udc_read(S3C2410_UDC_INDEX_REG);
909
910
911 usb_status = udc_read(S3C2410_UDC_USB_INT_REG);
912 usbd_status = udc_read(S3C2410_UDC_EP_INT_REG);
913 pwr_reg = udc_read(S3C2410_UDC_PWR_REG);
914
915 udc_writeb(base_addr, S3C2410_UDC_INDEX_EP0, S3C2410_UDC_INDEX_REG);
916 ep0csr = udc_read(S3C2410_UDC_IN_CSR1_REG);
917
918 dprintk(DEBUG_NORMAL, "usbs=%02x, usbds=%02x, pwr=%02x ep0csr=%02x\n",
919 usb_status, usbd_status, pwr_reg, ep0csr);
920
921
922
923
924
925
926
927
928 if (usb_status & S3C2410_UDC_USBINT_RESET) {
929
930
931
932
933 dprintk(DEBUG_NORMAL, "USB reset csr %x pwr %x\n",
934 ep0csr, pwr_reg);
935
936 dev->gadget.speed = USB_SPEED_UNKNOWN;
937 udc_write(0x00, S3C2410_UDC_INDEX_REG);
938 udc_write((dev->ep[0].ep.maxpacket & 0x7ff) >> 3,
939 S3C2410_UDC_MAXP_REG);
940 dev->address = 0;
941
942 dev->ep0state = EP0_IDLE;
943 dev->gadget.speed = USB_SPEED_FULL;
944
945
946 udc_write(S3C2410_UDC_USBINT_RESET,
947 S3C2410_UDC_USB_INT_REG);
948
949 udc_write(idx, S3C2410_UDC_INDEX_REG);
950 spin_unlock_irqrestore(&dev->lock, flags);
951 return IRQ_HANDLED;
952 }
953
954
955 if (usb_status & S3C2410_UDC_USBINT_RESUME) {
956 dprintk(DEBUG_NORMAL, "USB resume\n");
957
958
959 udc_write(S3C2410_UDC_USBINT_RESUME,
960 S3C2410_UDC_USB_INT_REG);
961
962 if (dev->gadget.speed != USB_SPEED_UNKNOWN
963 && dev->driver
964 && dev->driver->resume)
965 dev->driver->resume(&dev->gadget);
966 }
967
968
969 if (usb_status & S3C2410_UDC_USBINT_SUSPEND) {
970 dprintk(DEBUG_NORMAL, "USB suspend\n");
971
972
973 udc_write(S3C2410_UDC_USBINT_SUSPEND,
974 S3C2410_UDC_USB_INT_REG);
975
976 if (dev->gadget.speed != USB_SPEED_UNKNOWN
977 && dev->driver
978 && dev->driver->suspend)
979 dev->driver->suspend(&dev->gadget);
980
981 dev->ep0state = EP0_IDLE;
982 }
983
984
985
986
987
988
989 if (usbd_status & S3C2410_UDC_INT_EP0) {
990 dprintk(DEBUG_VERBOSE, "USB ep0 irq\n");
991
992 udc_write(S3C2410_UDC_INT_EP0, S3C2410_UDC_EP_INT_REG);
993 s3c2410_udc_handle_ep0(dev);
994 }
995
996
997 for (i = 1; i < S3C2410_ENDPOINTS; i++) {
998 u32 tmp = 1 << i;
999 if (usbd_status & tmp) {
1000 dprintk(DEBUG_VERBOSE, "USB ep%d irq\n", i);
1001
1002
1003 udc_write(tmp, S3C2410_UDC_EP_INT_REG);
1004 s3c2410_udc_handle_ep(&dev->ep[i]);
1005 }
1006 }
1007
1008
1009 if (!usb_status && !usbd_status && !pwr_reg && !ep0csr) {
1010 for (i = 1; i < S3C2410_ENDPOINTS; i++) {
1011 idx2 = udc_read(S3C2410_UDC_INDEX_REG);
1012 udc_write(i, S3C2410_UDC_INDEX_REG);
1013
1014 if (udc_read(S3C2410_UDC_OUT_CSR1_REG) & 0x1)
1015 s3c2410_udc_handle_ep(&dev->ep[i]);
1016
1017
1018 udc_write(idx2, S3C2410_UDC_INDEX_REG);
1019 }
1020 }
1021
1022 dprintk(DEBUG_VERBOSE, "irq: %d s3c2410_udc_done.\n", IRQ_USBD);
1023
1024
1025 udc_write(idx, S3C2410_UDC_INDEX_REG);
1026
1027 spin_unlock_irqrestore(&dev->lock, flags);
1028
1029 return IRQ_HANDLED;
1030}
1031
1032
1033static inline struct s3c2410_ep *to_s3c2410_ep(struct usb_ep *ep)
1034{
1035 return container_of(ep, struct s3c2410_ep, ep);
1036}
1037
1038static inline struct s3c2410_udc *to_s3c2410_udc(struct usb_gadget *gadget)
1039{
1040 return container_of(gadget, struct s3c2410_udc, gadget);
1041}
1042
1043static inline struct s3c2410_request *to_s3c2410_req(struct usb_request *req)
1044{
1045 return container_of(req, struct s3c2410_request, req);
1046}
1047
1048
1049
1050
1051static int s3c2410_udc_ep_enable(struct usb_ep *_ep,
1052 const struct usb_endpoint_descriptor *desc)
1053{
1054 struct s3c2410_udc *dev;
1055 struct s3c2410_ep *ep;
1056 u32 max, tmp;
1057 unsigned long flags;
1058 u32 csr1, csr2;
1059 u32 int_en_reg;
1060
1061 ep = to_s3c2410_ep(_ep);
1062
1063 if (!_ep || !desc
1064 || _ep->name == ep0name
1065 || desc->bDescriptorType != USB_DT_ENDPOINT)
1066 return -EINVAL;
1067
1068 dev = ep->dev;
1069 if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN)
1070 return -ESHUTDOWN;
1071
1072 max = usb_endpoint_maxp(desc) & 0x1fff;
1073
1074 local_irq_save(flags);
1075 _ep->maxpacket = max & 0x7ff;
1076 ep->ep.desc = desc;
1077 ep->halted = 0;
1078 ep->bEndpointAddress = desc->bEndpointAddress;
1079
1080
1081 udc_write(ep->num, S3C2410_UDC_INDEX_REG);
1082 udc_write(max >> 3, S3C2410_UDC_MAXP_REG);
1083
1084
1085 if (desc->bEndpointAddress & USB_DIR_IN) {
1086 csr1 = S3C2410_UDC_ICSR1_FFLUSH|S3C2410_UDC_ICSR1_CLRDT;
1087 csr2 = S3C2410_UDC_ICSR2_MODEIN|S3C2410_UDC_ICSR2_DMAIEN;
1088
1089 udc_write(ep->num, S3C2410_UDC_INDEX_REG);
1090 udc_write(csr1, S3C2410_UDC_IN_CSR1_REG);
1091 udc_write(ep->num, S3C2410_UDC_INDEX_REG);
1092 udc_write(csr2, S3C2410_UDC_IN_CSR2_REG);
1093 } else {
1094
1095 csr1 = S3C2410_UDC_ICSR1_CLRDT;
1096 csr2 = S3C2410_UDC_ICSR2_DMAIEN;
1097
1098 udc_write(ep->num, S3C2410_UDC_INDEX_REG);
1099 udc_write(csr1, S3C2410_UDC_IN_CSR1_REG);
1100 udc_write(ep->num, S3C2410_UDC_INDEX_REG);
1101 udc_write(csr2, S3C2410_UDC_IN_CSR2_REG);
1102
1103 csr1 = S3C2410_UDC_OCSR1_FFLUSH | S3C2410_UDC_OCSR1_CLRDT;
1104 csr2 = S3C2410_UDC_OCSR2_DMAIEN;
1105
1106 udc_write(ep->num, S3C2410_UDC_INDEX_REG);
1107 udc_write(csr1, S3C2410_UDC_OUT_CSR1_REG);
1108 udc_write(ep->num, S3C2410_UDC_INDEX_REG);
1109 udc_write(csr2, S3C2410_UDC_OUT_CSR2_REG);
1110 }
1111
1112
1113 int_en_reg = udc_read(S3C2410_UDC_EP_INT_EN_REG);
1114 udc_write(int_en_reg | (1 << ep->num), S3C2410_UDC_EP_INT_EN_REG);
1115
1116
1117 tmp = desc->bEndpointAddress;
1118 dprintk(DEBUG_NORMAL, "enable %s(%d) ep%x%s-blk max %02x\n",
1119 _ep->name, ep->num, tmp,
1120 desc->bEndpointAddress & USB_DIR_IN ? "in" : "out", max);
1121
1122 local_irq_restore(flags);
1123 s3c2410_udc_set_halt(_ep, 0);
1124
1125 return 0;
1126}
1127
1128
1129
1130
1131static int s3c2410_udc_ep_disable(struct usb_ep *_ep)
1132{
1133 struct s3c2410_ep *ep = to_s3c2410_ep(_ep);
1134 unsigned long flags;
1135 u32 int_en_reg;
1136
1137 if (!_ep || !ep->ep.desc) {
1138 dprintk(DEBUG_NORMAL, "%s not enabled\n",
1139 _ep ? ep->ep.name : NULL);
1140 return -EINVAL;
1141 }
1142
1143 local_irq_save(flags);
1144
1145 dprintk(DEBUG_NORMAL, "ep_disable: %s\n", _ep->name);
1146
1147 ep->ep.desc = NULL;
1148 ep->halted = 1;
1149
1150 s3c2410_udc_nuke(ep->dev, ep, -ESHUTDOWN);
1151
1152
1153 int_en_reg = udc_read(S3C2410_UDC_EP_INT_EN_REG);
1154 udc_write(int_en_reg & ~(1<<ep->num), S3C2410_UDC_EP_INT_EN_REG);
1155
1156 local_irq_restore(flags);
1157
1158 dprintk(DEBUG_NORMAL, "%s disabled\n", _ep->name);
1159
1160 return 0;
1161}
1162
1163
1164
1165
1166static struct usb_request *
1167s3c2410_udc_alloc_request(struct usb_ep *_ep, gfp_t mem_flags)
1168{
1169 struct s3c2410_request *req;
1170
1171 dprintk(DEBUG_VERBOSE, "%s(%p,%d)\n", __func__, _ep, mem_flags);
1172
1173 if (!_ep)
1174 return NULL;
1175
1176 req = kzalloc(sizeof(struct s3c2410_request), mem_flags);
1177 if (!req)
1178 return NULL;
1179
1180 INIT_LIST_HEAD(&req->queue);
1181 return &req->req;
1182}
1183
1184
1185
1186
1187static void
1188s3c2410_udc_free_request(struct usb_ep *_ep, struct usb_request *_req)
1189{
1190 struct s3c2410_ep *ep = to_s3c2410_ep(_ep);
1191 struct s3c2410_request *req = to_s3c2410_req(_req);
1192
1193 dprintk(DEBUG_VERBOSE, "%s(%p,%p)\n", __func__, _ep, _req);
1194
1195 if (!ep || !_req || (!ep->ep.desc && _ep->name != ep0name))
1196 return;
1197
1198 WARN_ON(!list_empty(&req->queue));
1199 kfree(req);
1200}
1201
1202
1203
1204
1205static int s3c2410_udc_queue(struct usb_ep *_ep, struct usb_request *_req,
1206 gfp_t gfp_flags)
1207{
1208 struct s3c2410_request *req = to_s3c2410_req(_req);
1209 struct s3c2410_ep *ep = to_s3c2410_ep(_ep);
1210 struct s3c2410_udc *dev;
1211 u32 ep_csr = 0;
1212 int fifo_count = 0;
1213 unsigned long flags;
1214
1215 if (unlikely(!_ep || (!ep->ep.desc && ep->ep.name != ep0name))) {
1216 dprintk(DEBUG_NORMAL, "%s: invalid args\n", __func__);
1217 return -EINVAL;
1218 }
1219
1220 dev = ep->dev;
1221 if (unlikely(!dev->driver
1222 || dev->gadget.speed == USB_SPEED_UNKNOWN)) {
1223 return -ESHUTDOWN;
1224 }
1225
1226 local_irq_save(flags);
1227
1228 if (unlikely(!_req || !_req->complete
1229 || !_req->buf || !list_empty(&req->queue))) {
1230 if (!_req)
1231 dprintk(DEBUG_NORMAL, "%s: 1 X X X\n", __func__);
1232 else {
1233 dprintk(DEBUG_NORMAL, "%s: 0 %01d %01d %01d\n",
1234 __func__, !_req->complete, !_req->buf,
1235 !list_empty(&req->queue));
1236 }
1237
1238 local_irq_restore(flags);
1239 return -EINVAL;
1240 }
1241
1242 _req->status = -EINPROGRESS;
1243 _req->actual = 0;
1244
1245 dprintk(DEBUG_VERBOSE, "%s: ep%x len %d\n",
1246 __func__, ep->bEndpointAddress, _req->length);
1247
1248 if (ep->bEndpointAddress) {
1249 udc_write(ep->bEndpointAddress & 0x7F, S3C2410_UDC_INDEX_REG);
1250
1251 ep_csr = udc_read((ep->bEndpointAddress & USB_DIR_IN)
1252 ? S3C2410_UDC_IN_CSR1_REG
1253 : S3C2410_UDC_OUT_CSR1_REG);
1254 fifo_count = s3c2410_udc_fifo_count_out();
1255 } else {
1256 udc_write(0, S3C2410_UDC_INDEX_REG);
1257 ep_csr = udc_read(S3C2410_UDC_IN_CSR1_REG);
1258 fifo_count = s3c2410_udc_fifo_count_out();
1259 }
1260
1261
1262 if (list_empty(&ep->queue) && !ep->halted) {
1263 if (ep->bEndpointAddress == 0 ) {
1264 switch (dev->ep0state) {
1265 case EP0_IN_DATA_PHASE:
1266 if (!(ep_csr&S3C2410_UDC_EP0_CSR_IPKRDY)
1267 && s3c2410_udc_write_fifo(ep,
1268 req)) {
1269 dev->ep0state = EP0_IDLE;
1270 req = NULL;
1271 }
1272 break;
1273
1274 case EP0_OUT_DATA_PHASE:
1275 if ((!_req->length)
1276 || ((ep_csr & S3C2410_UDC_OCSR1_PKTRDY)
1277 && s3c2410_udc_read_fifo(ep,
1278 req))) {
1279 dev->ep0state = EP0_IDLE;
1280 req = NULL;
1281 }
1282 break;
1283
1284 default:
1285 local_irq_restore(flags);
1286 return -EL2HLT;
1287 }
1288 } else if ((ep->bEndpointAddress & USB_DIR_IN) != 0
1289 && (!(ep_csr&S3C2410_UDC_OCSR1_PKTRDY))
1290 && s3c2410_udc_write_fifo(ep, req)) {
1291 req = NULL;
1292 } else if ((ep_csr & S3C2410_UDC_OCSR1_PKTRDY)
1293 && fifo_count
1294 && s3c2410_udc_read_fifo(ep, req)) {
1295 req = NULL;
1296 }
1297 }
1298
1299
1300 if (likely(req))
1301 list_add_tail(&req->queue, &ep->queue);
1302
1303 local_irq_restore(flags);
1304
1305 dprintk(DEBUG_VERBOSE, "%s ok\n", __func__);
1306 return 0;
1307}
1308
1309
1310
1311
1312static int s3c2410_udc_dequeue(struct usb_ep *_ep, struct usb_request *_req)
1313{
1314 struct s3c2410_ep *ep = to_s3c2410_ep(_ep);
1315 struct s3c2410_udc *udc;
1316 int retval = -EINVAL;
1317 unsigned long flags;
1318 struct s3c2410_request *req = NULL;
1319
1320 dprintk(DEBUG_VERBOSE, "%s(%p,%p)\n", __func__, _ep, _req);
1321
1322 if (!the_controller->driver)
1323 return -ESHUTDOWN;
1324
1325 if (!_ep || !_req)
1326 return retval;
1327
1328 udc = to_s3c2410_udc(ep->gadget);
1329
1330 local_irq_save(flags);
1331
1332 list_for_each_entry(req, &ep->queue, queue) {
1333 if (&req->req == _req) {
1334 list_del_init(&req->queue);
1335 _req->status = -ECONNRESET;
1336 retval = 0;
1337 break;
1338 }
1339 }
1340
1341 if (retval == 0) {
1342 dprintk(DEBUG_VERBOSE,
1343 "dequeued req %p from %s, len %d buf %p\n",
1344 req, _ep->name, _req->length, _req->buf);
1345
1346 s3c2410_udc_done(ep, req, -ECONNRESET);
1347 }
1348
1349 local_irq_restore(flags);
1350 return retval;
1351}
1352
1353
1354
1355
1356static int s3c2410_udc_set_halt(struct usb_ep *_ep, int value)
1357{
1358 struct s3c2410_ep *ep = to_s3c2410_ep(_ep);
1359 u32 ep_csr = 0;
1360 unsigned long flags;
1361 u32 idx;
1362
1363 if (unlikely(!_ep || (!ep->ep.desc && ep->ep.name != ep0name))) {
1364 dprintk(DEBUG_NORMAL, "%s: inval 2\n", __func__);
1365 return -EINVAL;
1366 }
1367
1368 local_irq_save(flags);
1369
1370 idx = ep->bEndpointAddress & 0x7F;
1371
1372 if (idx == 0) {
1373 s3c2410_udc_set_ep0_ss(base_addr);
1374 s3c2410_udc_set_ep0_de_out(base_addr);
1375 } else {
1376 udc_write(idx, S3C2410_UDC_INDEX_REG);
1377 ep_csr = udc_read((ep->bEndpointAddress & USB_DIR_IN)
1378 ? S3C2410_UDC_IN_CSR1_REG
1379 : S3C2410_UDC_OUT_CSR1_REG);
1380
1381 if ((ep->bEndpointAddress & USB_DIR_IN) != 0) {
1382 if (value)
1383 udc_write(ep_csr | S3C2410_UDC_ICSR1_SENDSTL,
1384 S3C2410_UDC_IN_CSR1_REG);
1385 else {
1386 ep_csr &= ~S3C2410_UDC_ICSR1_SENDSTL;
1387 udc_write(ep_csr, S3C2410_UDC_IN_CSR1_REG);
1388 ep_csr |= S3C2410_UDC_ICSR1_CLRDT;
1389 udc_write(ep_csr, S3C2410_UDC_IN_CSR1_REG);
1390 }
1391 } else {
1392 if (value)
1393 udc_write(ep_csr | S3C2410_UDC_OCSR1_SENDSTL,
1394 S3C2410_UDC_OUT_CSR1_REG);
1395 else {
1396 ep_csr &= ~S3C2410_UDC_OCSR1_SENDSTL;
1397 udc_write(ep_csr, S3C2410_UDC_OUT_CSR1_REG);
1398 ep_csr |= S3C2410_UDC_OCSR1_CLRDT;
1399 udc_write(ep_csr, S3C2410_UDC_OUT_CSR1_REG);
1400 }
1401 }
1402 }
1403
1404 ep->halted = value ? 1 : 0;
1405 local_irq_restore(flags);
1406
1407 return 0;
1408}
1409
1410static const struct usb_ep_ops s3c2410_ep_ops = {
1411 .enable = s3c2410_udc_ep_enable,
1412 .disable = s3c2410_udc_ep_disable,
1413
1414 .alloc_request = s3c2410_udc_alloc_request,
1415 .free_request = s3c2410_udc_free_request,
1416
1417 .queue = s3c2410_udc_queue,
1418 .dequeue = s3c2410_udc_dequeue,
1419
1420 .set_halt = s3c2410_udc_set_halt,
1421};
1422
1423
1424
1425
1426
1427
1428static int s3c2410_udc_get_frame(struct usb_gadget *_gadget)
1429{
1430 int tmp;
1431
1432 dprintk(DEBUG_VERBOSE, "%s()\n", __func__);
1433
1434 tmp = udc_read(S3C2410_UDC_FRAME_NUM2_REG) << 8;
1435 tmp |= udc_read(S3C2410_UDC_FRAME_NUM1_REG);
1436 return tmp;
1437}
1438
1439
1440
1441
1442static int s3c2410_udc_wakeup(struct usb_gadget *_gadget)
1443{
1444 dprintk(DEBUG_NORMAL, "%s()\n", __func__);
1445 return 0;
1446}
1447
1448
1449
1450
1451static int s3c2410_udc_set_selfpowered(struct usb_gadget *gadget, int value)
1452{
1453 struct s3c2410_udc *udc = to_s3c2410_udc(gadget);
1454
1455 dprintk(DEBUG_NORMAL, "%s()\n", __func__);
1456
1457 if (value)
1458 udc->devstatus |= (1 << USB_DEVICE_SELF_POWERED);
1459 else
1460 udc->devstatus &= ~(1 << USB_DEVICE_SELF_POWERED);
1461
1462 return 0;
1463}
1464
1465static void s3c2410_udc_disable(struct s3c2410_udc *dev);
1466static void s3c2410_udc_enable(struct s3c2410_udc *dev);
1467
1468static int s3c2410_udc_set_pullup(struct s3c2410_udc *udc, int is_on)
1469{
1470 dprintk(DEBUG_NORMAL, "%s()\n", __func__);
1471
1472 if (udc_info && (udc_info->udc_command ||
1473 gpio_is_valid(udc_info->pullup_pin))) {
1474
1475 if (is_on)
1476 s3c2410_udc_enable(udc);
1477 else {
1478 if (udc->gadget.speed != USB_SPEED_UNKNOWN) {
1479 if (udc->driver && udc->driver->disconnect)
1480 udc->driver->disconnect(&udc->gadget);
1481
1482 }
1483 s3c2410_udc_disable(udc);
1484 }
1485 } else {
1486 return -EOPNOTSUPP;
1487 }
1488
1489 return 0;
1490}
1491
1492static int s3c2410_udc_vbus_session(struct usb_gadget *gadget, int is_active)
1493{
1494 struct s3c2410_udc *udc = to_s3c2410_udc(gadget);
1495
1496 dprintk(DEBUG_NORMAL, "%s()\n", __func__);
1497
1498 udc->vbus = (is_active != 0);
1499 s3c2410_udc_set_pullup(udc, is_active);
1500 return 0;
1501}
1502
1503static int s3c2410_udc_pullup(struct usb_gadget *gadget, int is_on)
1504{
1505 struct s3c2410_udc *udc = to_s3c2410_udc(gadget);
1506
1507 dprintk(DEBUG_NORMAL, "%s()\n", __func__);
1508
1509 s3c2410_udc_set_pullup(udc, is_on ? 0 : 1);
1510 return 0;
1511}
1512
1513static irqreturn_t s3c2410_udc_vbus_irq(int irq, void *_dev)
1514{
1515 struct s3c2410_udc *dev = _dev;
1516 unsigned int value;
1517
1518 dprintk(DEBUG_NORMAL, "%s()\n", __func__);
1519
1520 value = gpio_get_value(udc_info->vbus_pin) ? 1 : 0;
1521 if (udc_info->vbus_pin_inverted)
1522 value = !value;
1523
1524 if (value != dev->vbus)
1525 s3c2410_udc_vbus_session(&dev->gadget, value);
1526
1527 return IRQ_HANDLED;
1528}
1529
1530static int s3c2410_vbus_draw(struct usb_gadget *_gadget, unsigned ma)
1531{
1532 dprintk(DEBUG_NORMAL, "%s()\n", __func__);
1533
1534 if (udc_info && udc_info->vbus_draw) {
1535 udc_info->vbus_draw(ma);
1536 return 0;
1537 }
1538
1539 return -ENOTSUPP;
1540}
1541
1542static int s3c2410_udc_start(struct usb_gadget *g,
1543 struct usb_gadget_driver *driver);
1544static int s3c2410_udc_stop(struct usb_gadget *g);
1545
1546static const struct usb_gadget_ops s3c2410_ops = {
1547 .get_frame = s3c2410_udc_get_frame,
1548 .wakeup = s3c2410_udc_wakeup,
1549 .set_selfpowered = s3c2410_udc_set_selfpowered,
1550 .pullup = s3c2410_udc_pullup,
1551 .vbus_session = s3c2410_udc_vbus_session,
1552 .vbus_draw = s3c2410_vbus_draw,
1553 .udc_start = s3c2410_udc_start,
1554 .udc_stop = s3c2410_udc_stop,
1555};
1556
1557static void s3c2410_udc_command(enum s3c2410_udc_cmd_e cmd)
1558{
1559 if (!udc_info)
1560 return;
1561
1562 if (udc_info->udc_command) {
1563 udc_info->udc_command(cmd);
1564 } else if (gpio_is_valid(udc_info->pullup_pin)) {
1565 int value;
1566
1567 switch (cmd) {
1568 case S3C2410_UDC_P_ENABLE:
1569 value = 1;
1570 break;
1571 case S3C2410_UDC_P_DISABLE:
1572 value = 0;
1573 break;
1574 default:
1575 return;
1576 }
1577 value ^= udc_info->pullup_pin_inverted;
1578
1579 gpio_set_value(udc_info->pullup_pin, value);
1580 }
1581}
1582
1583
1584
1585
1586
1587static void s3c2410_udc_disable(struct s3c2410_udc *dev)
1588{
1589 dprintk(DEBUG_NORMAL, "%s()\n", __func__);
1590
1591
1592 udc_write(0x00, S3C2410_UDC_USB_INT_EN_REG);
1593 udc_write(0x00, S3C2410_UDC_EP_INT_EN_REG);
1594
1595
1596 udc_write(S3C2410_UDC_USBINT_RESET
1597 | S3C2410_UDC_USBINT_RESUME
1598 | S3C2410_UDC_USBINT_SUSPEND,
1599 S3C2410_UDC_USB_INT_REG);
1600
1601 udc_write(0x1F, S3C2410_UDC_EP_INT_REG);
1602
1603
1604 s3c2410_udc_command(S3C2410_UDC_P_DISABLE);
1605
1606
1607 dev->gadget.speed = USB_SPEED_UNKNOWN;
1608}
1609
1610
1611
1612
1613static void s3c2410_udc_reinit(struct s3c2410_udc *dev)
1614{
1615 u32 i;
1616
1617
1618 INIT_LIST_HEAD(&dev->gadget.ep_list);
1619 INIT_LIST_HEAD(&dev->gadget.ep0->ep_list);
1620 dev->ep0state = EP0_IDLE;
1621
1622 for (i = 0; i < S3C2410_ENDPOINTS; i++) {
1623 struct s3c2410_ep *ep = &dev->ep[i];
1624
1625 if (i != 0)
1626 list_add_tail(&ep->ep.ep_list, &dev->gadget.ep_list);
1627
1628 ep->dev = dev;
1629 ep->ep.desc = NULL;
1630 ep->halted = 0;
1631 INIT_LIST_HEAD(&ep->queue);
1632 usb_ep_set_maxpacket_limit(&ep->ep, ep->ep.maxpacket);
1633 }
1634}
1635
1636
1637
1638
1639static void s3c2410_udc_enable(struct s3c2410_udc *dev)
1640{
1641 int i;
1642
1643 dprintk(DEBUG_NORMAL, "s3c2410_udc_enable called\n");
1644
1645
1646 dev->gadget.speed = USB_SPEED_FULL;
1647
1648
1649 for (i = 0; i < S3C2410_ENDPOINTS; i++) {
1650 udc_write(i, S3C2410_UDC_INDEX_REG);
1651 udc_write((dev->ep[i].ep.maxpacket & 0x7ff) >> 3,
1652 S3C2410_UDC_MAXP_REG);
1653 }
1654
1655
1656 udc_write(DEFAULT_POWER_STATE, S3C2410_UDC_PWR_REG);
1657
1658
1659 udc_write(S3C2410_UDC_USBINT_RESET | S3C2410_UDC_USBINT_SUSPEND,
1660 S3C2410_UDC_USB_INT_EN_REG);
1661
1662
1663 udc_write(S3C2410_UDC_INT_EP0, S3C2410_UDC_EP_INT_EN_REG);
1664
1665
1666 s3c2410_udc_command(S3C2410_UDC_P_ENABLE);
1667}
1668
1669static int s3c2410_udc_start(struct usb_gadget *g,
1670 struct usb_gadget_driver *driver)
1671{
1672 struct s3c2410_udc *udc = to_s3c2410(g);
1673
1674 dprintk(DEBUG_NORMAL, "%s() '%s'\n", __func__, driver->driver.name);
1675
1676
1677 udc->driver = driver;
1678
1679
1680 s3c2410_udc_enable(udc);
1681
1682 return 0;
1683}
1684
1685static int s3c2410_udc_stop(struct usb_gadget *g)
1686{
1687 struct s3c2410_udc *udc = to_s3c2410(g);
1688
1689 udc->driver = NULL;
1690
1691
1692 s3c2410_udc_disable(udc);
1693
1694 return 0;
1695}
1696
1697
1698static struct s3c2410_udc memory = {
1699 .gadget = {
1700 .ops = &s3c2410_ops,
1701 .ep0 = &memory.ep[0].ep,
1702 .name = gadget_name,
1703 .dev = {
1704 .init_name = "gadget",
1705 },
1706 },
1707
1708
1709 .ep[0] = {
1710 .num = 0,
1711 .ep = {
1712 .name = ep0name,
1713 .ops = &s3c2410_ep_ops,
1714 .maxpacket = EP0_FIFO_SIZE,
1715 },
1716 .dev = &memory,
1717 },
1718
1719
1720 .ep[1] = {
1721 .num = 1,
1722 .ep = {
1723 .name = "ep1-bulk",
1724 .ops = &s3c2410_ep_ops,
1725 .maxpacket = EP_FIFO_SIZE,
1726 },
1727 .dev = &memory,
1728 .fifo_size = EP_FIFO_SIZE,
1729 .bEndpointAddress = 1,
1730 .bmAttributes = USB_ENDPOINT_XFER_BULK,
1731 },
1732 .ep[2] = {
1733 .num = 2,
1734 .ep = {
1735 .name = "ep2-bulk",
1736 .ops = &s3c2410_ep_ops,
1737 .maxpacket = EP_FIFO_SIZE,
1738 },
1739 .dev = &memory,
1740 .fifo_size = EP_FIFO_SIZE,
1741 .bEndpointAddress = 2,
1742 .bmAttributes = USB_ENDPOINT_XFER_BULK,
1743 },
1744 .ep[3] = {
1745 .num = 3,
1746 .ep = {
1747 .name = "ep3-bulk",
1748 .ops = &s3c2410_ep_ops,
1749 .maxpacket = EP_FIFO_SIZE,
1750 },
1751 .dev = &memory,
1752 .fifo_size = EP_FIFO_SIZE,
1753 .bEndpointAddress = 3,
1754 .bmAttributes = USB_ENDPOINT_XFER_BULK,
1755 },
1756 .ep[4] = {
1757 .num = 4,
1758 .ep = {
1759 .name = "ep4-bulk",
1760 .ops = &s3c2410_ep_ops,
1761 .maxpacket = EP_FIFO_SIZE,
1762 },
1763 .dev = &memory,
1764 .fifo_size = EP_FIFO_SIZE,
1765 .bEndpointAddress = 4,
1766 .bmAttributes = USB_ENDPOINT_XFER_BULK,
1767 }
1768
1769};
1770
1771
1772
1773
1774static int s3c2410_udc_probe(struct platform_device *pdev)
1775{
1776 struct s3c2410_udc *udc = &memory;
1777 struct device *dev = &pdev->dev;
1778 int retval;
1779 int irq;
1780
1781 dev_dbg(dev, "%s()\n", __func__);
1782
1783 usb_bus_clock = clk_get(NULL, "usb-bus-gadget");
1784 if (IS_ERR(usb_bus_clock)) {
1785 dev_err(dev, "failed to get usb bus clock source\n");
1786 return PTR_ERR(usb_bus_clock);
1787 }
1788
1789 clk_prepare_enable(usb_bus_clock);
1790
1791 udc_clock = clk_get(NULL, "usb-device");
1792 if (IS_ERR(udc_clock)) {
1793 dev_err(dev, "failed to get udc clock source\n");
1794 return PTR_ERR(udc_clock);
1795 }
1796
1797 clk_prepare_enable(udc_clock);
1798
1799 mdelay(10);
1800
1801 dev_dbg(dev, "got and enabled clocks\n");
1802
1803 if (strncmp(pdev->name, "s3c2440", 7) == 0) {
1804 dev_info(dev, "S3C2440: increasing FIFO to 128 bytes\n");
1805 memory.ep[1].fifo_size = S3C2440_EP_FIFO_SIZE;
1806 memory.ep[2].fifo_size = S3C2440_EP_FIFO_SIZE;
1807 memory.ep[3].fifo_size = S3C2440_EP_FIFO_SIZE;
1808 memory.ep[4].fifo_size = S3C2440_EP_FIFO_SIZE;
1809 }
1810
1811 spin_lock_init(&udc->lock);
1812 udc_info = dev_get_platdata(&pdev->dev);
1813
1814 rsrc_start = S3C2410_PA_USBDEV;
1815 rsrc_len = S3C24XX_SZ_USBDEV;
1816
1817 if (!request_mem_region(rsrc_start, rsrc_len, gadget_name))
1818 return -EBUSY;
1819
1820 base_addr = ioremap(rsrc_start, rsrc_len);
1821 if (!base_addr) {
1822 retval = -ENOMEM;
1823 goto err_mem;
1824 }
1825
1826 the_controller = udc;
1827 platform_set_drvdata(pdev, udc);
1828
1829 s3c2410_udc_disable(udc);
1830 s3c2410_udc_reinit(udc);
1831
1832
1833 retval = request_irq(IRQ_USBD, s3c2410_udc_irq,
1834 0, gadget_name, udc);
1835
1836 if (retval != 0) {
1837 dev_err(dev, "cannot get irq %i, err %d\n", IRQ_USBD, retval);
1838 retval = -EBUSY;
1839 goto err_map;
1840 }
1841
1842 dev_dbg(dev, "got irq %i\n", IRQ_USBD);
1843
1844 if (udc_info && udc_info->vbus_pin > 0) {
1845 retval = gpio_request(udc_info->vbus_pin, "udc vbus");
1846 if (retval < 0) {
1847 dev_err(dev, "cannot claim vbus pin\n");
1848 goto err_int;
1849 }
1850
1851 irq = gpio_to_irq(udc_info->vbus_pin);
1852 if (irq < 0) {
1853 dev_err(dev, "no irq for gpio vbus pin\n");
1854 retval = irq;
1855 goto err_gpio_claim;
1856 }
1857
1858 retval = request_irq(irq, s3c2410_udc_vbus_irq,
1859 IRQF_TRIGGER_RISING
1860 | IRQF_TRIGGER_FALLING | IRQF_SHARED,
1861 gadget_name, udc);
1862
1863 if (retval != 0) {
1864 dev_err(dev, "can't get vbus irq %d, err %d\n",
1865 irq, retval);
1866 retval = -EBUSY;
1867 goto err_gpio_claim;
1868 }
1869
1870 dev_dbg(dev, "got irq %i\n", irq);
1871 } else {
1872 udc->vbus = 1;
1873 }
1874
1875 if (udc_info && !udc_info->udc_command &&
1876 gpio_is_valid(udc_info->pullup_pin)) {
1877
1878 retval = gpio_request_one(udc_info->pullup_pin,
1879 udc_info->vbus_pin_inverted ?
1880 GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW,
1881 "udc pullup");
1882 if (retval)
1883 goto err_vbus_irq;
1884 }
1885
1886 retval = usb_add_gadget_udc(&pdev->dev, &udc->gadget);
1887 if (retval)
1888 goto err_add_udc;
1889
1890 if (s3c2410_udc_debugfs_root) {
1891 udc->regs_info = debugfs_create_file("registers", S_IRUGO,
1892 s3c2410_udc_debugfs_root,
1893 udc, &s3c2410_udc_debugfs_fops);
1894 if (!udc->regs_info)
1895 dev_warn(dev, "debugfs file creation failed\n");
1896 }
1897
1898 dev_dbg(dev, "probe ok\n");
1899
1900 return 0;
1901
1902err_add_udc:
1903 if (udc_info && !udc_info->udc_command &&
1904 gpio_is_valid(udc_info->pullup_pin))
1905 gpio_free(udc_info->pullup_pin);
1906err_vbus_irq:
1907 if (udc_info && udc_info->vbus_pin > 0)
1908 free_irq(gpio_to_irq(udc_info->vbus_pin), udc);
1909err_gpio_claim:
1910 if (udc_info && udc_info->vbus_pin > 0)
1911 gpio_free(udc_info->vbus_pin);
1912err_int:
1913 free_irq(IRQ_USBD, udc);
1914err_map:
1915 iounmap(base_addr);
1916err_mem:
1917 release_mem_region(rsrc_start, rsrc_len);
1918
1919 return retval;
1920}
1921
1922
1923
1924
1925static int s3c2410_udc_remove(struct platform_device *pdev)
1926{
1927 struct s3c2410_udc *udc = platform_get_drvdata(pdev);
1928 unsigned int irq;
1929
1930 dev_dbg(&pdev->dev, "%s()\n", __func__);
1931
1932 if (udc->driver)
1933 return -EBUSY;
1934
1935 usb_del_gadget_udc(&udc->gadget);
1936 debugfs_remove(udc->regs_info);
1937
1938 if (udc_info && !udc_info->udc_command &&
1939 gpio_is_valid(udc_info->pullup_pin))
1940 gpio_free(udc_info->pullup_pin);
1941
1942 if (udc_info && udc_info->vbus_pin > 0) {
1943 irq = gpio_to_irq(udc_info->vbus_pin);
1944 free_irq(irq, udc);
1945 }
1946
1947 free_irq(IRQ_USBD, udc);
1948
1949 iounmap(base_addr);
1950 release_mem_region(rsrc_start, rsrc_len);
1951
1952 if (!IS_ERR(udc_clock) && udc_clock != NULL) {
1953 clk_disable_unprepare(udc_clock);
1954 clk_put(udc_clock);
1955 udc_clock = NULL;
1956 }
1957
1958 if (!IS_ERR(usb_bus_clock) && usb_bus_clock != NULL) {
1959 clk_disable_unprepare(usb_bus_clock);
1960 clk_put(usb_bus_clock);
1961 usb_bus_clock = NULL;
1962 }
1963
1964 dev_dbg(&pdev->dev, "%s: remove ok\n", __func__);
1965 return 0;
1966}
1967
1968#ifdef CONFIG_PM
1969static int
1970s3c2410_udc_suspend(struct platform_device *pdev, pm_message_t message)
1971{
1972 s3c2410_udc_command(S3C2410_UDC_P_DISABLE);
1973
1974 return 0;
1975}
1976
1977static int s3c2410_udc_resume(struct platform_device *pdev)
1978{
1979 s3c2410_udc_command(S3C2410_UDC_P_ENABLE);
1980
1981 return 0;
1982}
1983#else
1984#define s3c2410_udc_suspend NULL
1985#define s3c2410_udc_resume NULL
1986#endif
1987
1988static const struct platform_device_id s3c_udc_ids[] = {
1989 { "s3c2410-usbgadget", },
1990 { "s3c2440-usbgadget", },
1991 { }
1992};
1993MODULE_DEVICE_TABLE(platform, s3c_udc_ids);
1994
1995static struct platform_driver udc_driver_24x0 = {
1996 .driver = {
1997 .name = "s3c24x0-usbgadget",
1998 },
1999 .probe = s3c2410_udc_probe,
2000 .remove = s3c2410_udc_remove,
2001 .suspend = s3c2410_udc_suspend,
2002 .resume = s3c2410_udc_resume,
2003 .id_table = s3c_udc_ids,
2004};
2005
2006static int __init udc_init(void)
2007{
2008 int retval;
2009
2010 dprintk(DEBUG_NORMAL, "%s: version %s\n", gadget_name, DRIVER_VERSION);
2011
2012 s3c2410_udc_debugfs_root = debugfs_create_dir(gadget_name, NULL);
2013 if (IS_ERR(s3c2410_udc_debugfs_root)) {
2014 pr_err("%s: debugfs dir creation failed %ld\n",
2015 gadget_name, PTR_ERR(s3c2410_udc_debugfs_root));
2016 s3c2410_udc_debugfs_root = NULL;
2017 }
2018
2019 retval = platform_driver_register(&udc_driver_24x0);
2020 if (retval)
2021 goto err;
2022
2023 return 0;
2024
2025err:
2026 debugfs_remove(s3c2410_udc_debugfs_root);
2027 return retval;
2028}
2029
2030static void __exit udc_exit(void)
2031{
2032 platform_driver_unregister(&udc_driver_24x0);
2033 debugfs_remove(s3c2410_udc_debugfs_root);
2034}
2035
2036module_init(udc_init);
2037module_exit(udc_exit);
2038
2039MODULE_AUTHOR(DRIVER_AUTHOR);
2040MODULE_DESCRIPTION(DRIVER_DESC);
2041MODULE_VERSION(DRIVER_VERSION);
2042MODULE_LICENSE("GPL");
2043
