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usb: gadget: udc: do not clear gadget driver.bus
[linux-2.6-block.git] / drivers / usb / fotg210 / fotg210-udc.c
CommitLineData
5fd54ace 1// SPDX-License-Identifier: GPL-2.0
b84a8dee
YHC		 2/*
3 * FOTG210 UDC Driver supports Bulk transfer so far
4 *
5 * Copyright (C) 2013 Faraday Technology Corporation
6 *
7 * Author : Yuan-Hsin Chen <yhchen@faraday-tech.com>
b84a8dee
YHC		 8 */
9
10#include <linux/dma-mapping.h>
11#include <linux/err.h>
12#include <linux/interrupt.h>
13#include <linux/io.h>
14#include <linux/module.h>
15#include <linux/platform_device.h>
16#include <linux/usb/ch9.h>
17#include <linux/usb/gadget.h>
718a38d0 18#include <linux/clk.h>
5f217ccd
LW		 19#include <linux/usb/otg.h>
20#include <linux/usb/phy.h>
b84a8dee 21
aeffd2c3 22#include "fotg210.h"
1dd33a9f 23#include "fotg210-udc.h"
b84a8dee
YHC		 24
25#define DRIVER_DESC "FOTG210 USB Device Controller Driver"
26#define DRIVER_VERSION "30-April-2013"
27
28static const char udc_name[] = "fotg210_udc";
29static const char * const fotg210_ep_name[] = {
30 "ep0", "ep1", "ep2", "ep3", "ep4"};
31
32static void fotg210_disable_fifo_int(struct fotg210_ep *ep)
33{
34 u32 value = ioread32(ep->fotg210->reg + FOTG210_DMISGR1);
35
36 if (ep->dir_in)
37 value |= DMISGR1_MF_IN_INT(ep->epnum - 1);
38 else
39 value |= DMISGR1_MF_OUTSPK_INT(ep->epnum - 1);
40 iowrite32(value, ep->fotg210->reg + FOTG210_DMISGR1);
41}
42
43static void fotg210_enable_fifo_int(struct fotg210_ep *ep)
44{
45 u32 value = ioread32(ep->fotg210->reg + FOTG210_DMISGR1);
46
47 if (ep->dir_in)
48 value &= ~DMISGR1_MF_IN_INT(ep->epnum - 1);
49 else
50 value &= ~DMISGR1_MF_OUTSPK_INT(ep->epnum - 1);
51 iowrite32(value, ep->fotg210->reg + FOTG210_DMISGR1);
52}
53
54static void fotg210_set_cxdone(struct fotg210_udc *fotg210)
55{
56 u32 value = ioread32(fotg210->reg + FOTG210_DCFESR);
57
58 value |= DCFESR_CX_DONE;
59 iowrite32(value, fotg210->reg + FOTG210_DCFESR);
60}
61
62static void fotg210_done(struct fotg210_ep *ep, struct fotg210_request *req,
63 int status)
64{
65 list_del_init(&req->queue);
66
67 /* don't modify queue heads during completion callback */
68 if (ep->fotg210->gadget.speed == USB_SPEED_UNKNOWN)
69 req->req.status = -ESHUTDOWN;
70 else
71 req->req.status = status;
72
73 spin_unlock(&ep->fotg210->lock);
304f7e5e 74 usb_gadget_giveback_request(&ep->ep, &req->req);
b84a8dee
YHC		 75 spin_lock(&ep->fotg210->lock);
76
77 if (ep->epnum) {
78 if (list_empty(&ep->queue))
79 fotg210_disable_fifo_int(ep);
80 } else {
81 fotg210_set_cxdone(ep->fotg210);
82 }
83}
84
85static void fotg210_fifo_ep_mapping(struct fotg210_ep *ep, u32 epnum,
86 u32 dir_in)
87{
88 struct fotg210_udc *fotg210 = ep->fotg210;
89 u32 val;
90
91 /* Driver should map an ep to a fifo and then map the fifo
92 * to the ep. What a brain-damaged design!
93 */
94
95 /* map a fifo to an ep */
96 val = ioread32(fotg210->reg + FOTG210_EPMAP);
97 val &= ~EPMAP_FIFONOMSK(epnum, dir_in);
98 val |= EPMAP_FIFONO(epnum, dir_in);
99 iowrite32(val, fotg210->reg + FOTG210_EPMAP);
100
101 /* map the ep to the fifo */
102 val = ioread32(fotg210->reg + FOTG210_FIFOMAP);
103 val &= ~FIFOMAP_EPNOMSK(epnum);
104 val |= FIFOMAP_EPNO(epnum);
105 iowrite32(val, fotg210->reg + FOTG210_FIFOMAP);
106
107 /* enable fifo */
108 val = ioread32(fotg210->reg + FOTG210_FIFOCF);
109 val |= FIFOCF_FIFO_EN(epnum - 1);
110 iowrite32(val, fotg210->reg + FOTG210_FIFOCF);
111}
112
113static void fotg210_set_fifo_dir(struct fotg210_ep *ep, u32 epnum, u32 dir_in)
114{
115 struct fotg210_udc *fotg210 = ep->fotg210;
116 u32 val;
117
118 val = ioread32(fotg210->reg + FOTG210_FIFOMAP);
119 val |= (dir_in ? FIFOMAP_DIRIN(epnum - 1) : FIFOMAP_DIROUT(epnum - 1));
120 iowrite32(val, fotg210->reg + FOTG210_FIFOMAP);
121}
122
123static void fotg210_set_tfrtype(struct fotg210_ep *ep, u32 epnum, u32 type)
124{
125 struct fotg210_udc *fotg210 = ep->fotg210;
126 u32 val;
127
128 val = ioread32(fotg210->reg + FOTG210_FIFOCF);
129 val |= FIFOCF_TYPE(type, epnum - 1);
130 iowrite32(val, fotg210->reg + FOTG210_FIFOCF);
131}
132
133static void fotg210_set_mps(struct fotg210_ep *ep, u32 epnum, u32 mps,
134 u32 dir_in)
135{
136 struct fotg210_udc *fotg210 = ep->fotg210;
137 u32 val;
138 u32 offset = dir_in ? FOTG210_INEPMPSR(epnum) :
139 FOTG210_OUTEPMPSR(epnum);
140
141 val = ioread32(fotg210->reg + offset);
142 val |= INOUTEPMPSR_MPS(mps);
143 iowrite32(val, fotg210->reg + offset);
144}
145
146static int fotg210_config_ep(struct fotg210_ep *ep,
147 const struct usb_endpoint_descriptor *desc)
148{
149 struct fotg210_udc *fotg210 = ep->fotg210;
150
151 fotg210_set_fifo_dir(ep, ep->epnum, ep->dir_in);
152 fotg210_set_tfrtype(ep, ep->epnum, ep->type);
153 fotg210_set_mps(ep, ep->epnum, ep->ep.maxpacket, ep->dir_in);
154 fotg210_fifo_ep_mapping(ep, ep->epnum, ep->dir_in);
155
156 fotg210->ep[ep->epnum] = ep;
157
158 return 0;
159}
160
161static int fotg210_ep_enable(struct usb_ep *_ep,
162 const struct usb_endpoint_descriptor *desc)
163{
164 struct fotg210_ep *ep;
165
166 ep = container_of(_ep, struct fotg210_ep, ep);
167
168 ep->desc = desc;
169 ep->epnum = usb_endpoint_num(desc);
170 ep->type = usb_endpoint_type(desc);
171 ep->dir_in = usb_endpoint_dir_in(desc);
172 ep->ep.maxpacket = usb_endpoint_maxp(desc);
173
174 return fotg210_config_ep(ep, desc);
175}
176
177static void fotg210_reset_tseq(struct fotg210_udc *fotg210, u8 epnum)
178{
179 struct fotg210_ep *ep = fotg210->ep[epnum];
180 u32 value;
181 void __iomem *reg;
182
183 reg = (ep->dir_in) ?
184 fotg210->reg + FOTG210_INEPMPSR(epnum) :
185 fotg210->reg + FOTG210_OUTEPMPSR(epnum);
186
187 /* Note: Driver needs to set and clear INOUTEPMPSR_RESET_TSEQ
188 * bit. Controller wouldn't clear this bit. WTF!!!
189 */
190
191 value = ioread32(reg);
192 value |= INOUTEPMPSR_RESET_TSEQ;
193 iowrite32(value, reg);
194
195 value = ioread32(reg);
196 value &= ~INOUTEPMPSR_RESET_TSEQ;
197 iowrite32(value, reg);
198}
199
200static int fotg210_ep_release(struct fotg210_ep *ep)
201{
202 if (!ep->epnum)
203 return 0;
204 ep->epnum = 0;
205 ep->stall = 0;
206 ep->wedged = 0;
207
208 fotg210_reset_tseq(ep->fotg210, ep->epnum);
209
210 return 0;
211}
212
213static int fotg210_ep_disable(struct usb_ep *_ep)
214{
215 struct fotg210_ep *ep;
216 struct fotg210_request *req;
217 unsigned long flags;
218
219 BUG_ON(!_ep);
220
221 ep = container_of(_ep, struct fotg210_ep, ep);
222
223 while (!list_empty(&ep->queue)) {
224 req = list_entry(ep->queue.next,
225 struct fotg210_request, queue);
226 spin_lock_irqsave(&ep->fotg210->lock, flags);
227 fotg210_done(ep, req, -ECONNRESET);
228 spin_unlock_irqrestore(&ep->fotg210->lock, flags);
229 }
230
231 return fotg210_ep_release(ep);
232}
233
234static struct usb_request *fotg210_ep_alloc_request(struct usb_ep *_ep,
235 gfp_t gfp_flags)
236{
237 struct fotg210_request *req;
238
239 req = kzalloc(sizeof(struct fotg210_request), gfp_flags);
240 if (!req)
241 return NULL;
242
243 INIT_LIST_HEAD(&req->queue);
244
245 return &req->req;
246}
247
248static void fotg210_ep_free_request(struct usb_ep *_ep,
249 struct usb_request *_req)
250{
251 struct fotg210_request *req;
252
253 req = container_of(_req, struct fotg210_request, req);
254 kfree(req);
255}
256
257static void fotg210_enable_dma(struct fotg210_ep *ep,
258 dma_addr_t d, u32 len)
259{
260 u32 value;
261 struct fotg210_udc *fotg210 = ep->fotg210;
262
263 /* set transfer length and direction */
264 value = ioread32(fotg210->reg + FOTG210_DMACPSR1);
265 value &= ~(DMACPSR1_DMA_LEN(0xFFFF) | DMACPSR1_DMA_TYPE(1));
266 value |= DMACPSR1_DMA_LEN(len) | DMACPSR1_DMA_TYPE(ep->dir_in);
267 iowrite32(value, fotg210->reg + FOTG210_DMACPSR1);
268
269 /* set device DMA target FIFO number */
270 value = ioread32(fotg210->reg + FOTG210_DMATFNR);
271 if (ep->epnum)
272 value |= DMATFNR_ACC_FN(ep->epnum - 1);
273 else
274 value |= DMATFNR_ACC_CXF;
275 iowrite32(value, fotg210->reg + FOTG210_DMATFNR);
276
277 /* set DMA memory address */
278 iowrite32(d, fotg210->reg + FOTG210_DMACPSR2);
279
280 /* enable MDMA_EROR and MDMA_CMPLT interrupt */
281 value = ioread32(fotg210->reg + FOTG210_DMISGR2);
282 value &= ~(DMISGR2_MDMA_CMPLT | DMISGR2_MDMA_ERROR);
283 iowrite32(value, fotg210->reg + FOTG210_DMISGR2);
284
285 /* start DMA */
286 value = ioread32(fotg210->reg + FOTG210_DMACPSR1);
287 value |= DMACPSR1_DMA_START;
288 iowrite32(value, fotg210->reg + FOTG210_DMACPSR1);
289}
290
291static void fotg210_disable_dma(struct fotg210_ep *ep)
292{
293 iowrite32(DMATFNR_DISDMA, ep->fotg210->reg + FOTG210_DMATFNR);
294}
295
296static void fotg210_wait_dma_done(struct fotg210_ep *ep)
297{
298 u32 value;
299
300 do {
301 value = ioread32(ep->fotg210->reg + FOTG210_DISGR2);
302 if ((value & DISGR2_USBRST_INT) ||
303 (value & DISGR2_DMA_ERROR))
304 goto dma_reset;
305 } while (!(value & DISGR2_DMA_CMPLT));
306
307 value &= ~DISGR2_DMA_CMPLT;
308 iowrite32(value, ep->fotg210->reg + FOTG210_DISGR2);
309 return;
310
311dma_reset:
312 value = ioread32(ep->fotg210->reg + FOTG210_DMACPSR1);
313 value |= DMACPSR1_DMA_ABORT;
314 iowrite32(value, ep->fotg210->reg + FOTG210_DMACPSR1);
315
316 /* reset fifo */
317 if (ep->epnum) {
318 value = ioread32(ep->fotg210->reg +
319 FOTG210_FIBCR(ep->epnum - 1));
320 value |= FIBCR_FFRST;
321 iowrite32(value, ep->fotg210->reg +
322 FOTG210_FIBCR(ep->epnum - 1));
323 } else {
324 value = ioread32(ep->fotg210->reg + FOTG210_DCFESR);
325 value |= DCFESR_CX_CLR;
326 iowrite32(value, ep->fotg210->reg + FOTG210_DCFESR);
327 }
328}
329
330static void fotg210_start_dma(struct fotg210_ep *ep,
331 struct fotg210_request *req)
332{
e26bdb01 333 struct device *dev = &ep->fotg210->gadget.dev;
b84a8dee
YHC		 334 dma_addr_t d;
335 u8 *buffer;
336 u32 length;
337
338 if (ep->epnum) {
339 if (ep->dir_in) {
340 buffer = req->req.buf;
341 length = req->req.length;
342 } else {
343 buffer = req->req.buf + req->req.actual;
344 length = ioread32(ep->fotg210->reg +
3e7c2510
FV		 345 FOTG210_FIBCR(ep->epnum - 1)) & FIBCR_BCFX;
346 if (length > req->req.length - req->req.actual)
347 length = req->req.length - req->req.actual;
b84a8dee
YHC		 348 }
349 } else {
350 buffer = req->req.buf + req->req.actual;
351 if (req->req.length - req->req.actual > ep->ep.maxpacket)
352 length = ep->ep.maxpacket;
353 else
755915fc 354 length = req->req.length - req->req.actual;
b84a8dee
YHC		 355 }
356
e26bdb01 357 d = dma_map_single(dev, buffer, length,
b84a8dee
YHC		 358 ep->dir_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
359
e26bdb01 360 if (dma_mapping_error(dev, d)) {
b84a8dee
YHC		 361 pr_err("dma_mapping_error\n");
362 return;
363 }
364
b84a8dee
YHC		 365 fotg210_enable_dma(ep, d, length);
366
367 /* check if dma is done */
368 fotg210_wait_dma_done(ep);
369
370 fotg210_disable_dma(ep);
371
372 /* update actual transfer length */
373 req->req.actual += length;
374
e26bdb01 375 dma_unmap_single(dev, d, length, DMA_TO_DEVICE);
b84a8dee
YHC		 376}
377
378static void fotg210_ep0_queue(struct fotg210_ep *ep,
379 struct fotg210_request *req)
380{
381 if (!req->req.length) {
382 fotg210_done(ep, req, 0);
383 return;
384 }
385 if (ep->dir_in) { /* if IN */
1c99cabf 386 fotg210_start_dma(ep, req);
c7f755b2 387 if (req->req.length == req->req.actual)
b84a8dee
YHC		 388 fotg210_done(ep, req, 0);
389 } else { /* OUT */
1c99cabf 390 u32 value = ioread32(ep->fotg210->reg + FOTG210_DMISGR0);
b84a8dee 391
1c99cabf
DC		 392 value &= ~DMISGR0_MCX_OUT_INT;
393 iowrite32(value, ep->fotg210->reg + FOTG210_DMISGR0);
b84a8dee
YHC		 394 }
395}
396
397static int fotg210_ep_queue(struct usb_ep *_ep, struct usb_request *_req,
398 gfp_t gfp_flags)
399{
400 struct fotg210_ep *ep;
401 struct fotg210_request *req;
402 unsigned long flags;
403 int request = 0;
404
405 ep = container_of(_ep, struct fotg210_ep, ep);
406 req = container_of(_req, struct fotg210_request, req);
407
408 if (ep->fotg210->gadget.speed == USB_SPEED_UNKNOWN)
409 return -ESHUTDOWN;
410
411 spin_lock_irqsave(&ep->fotg210->lock, flags);
412
413 if (list_empty(&ep->queue))
414 request = 1;
415
416 list_add_tail(&req->queue, &ep->queue);
417
418 req->req.actual = 0;
419 req->req.status = -EINPROGRESS;
420
421 if (!ep->epnum) /* ep0 */
422 fotg210_ep0_queue(ep, req);
423 else if (request && !ep->stall)
424 fotg210_enable_fifo_int(ep);
425
426 spin_unlock_irqrestore(&ep->fotg210->lock, flags);
427
428 return 0;
429}
430
431static int fotg210_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req)
432{
433 struct fotg210_ep *ep;
434 struct fotg210_request *req;
435 unsigned long flags;
436
437 ep = container_of(_ep, struct fotg210_ep, ep);
438 req = container_of(_req, struct fotg210_request, req);
439
440 spin_lock_irqsave(&ep->fotg210->lock, flags);
441 if (!list_empty(&ep->queue))
442 fotg210_done(ep, req, -ECONNRESET);
443 spin_unlock_irqrestore(&ep->fotg210->lock, flags);
444
445 return 0;
446}
447
448static void fotg210_set_epnstall(struct fotg210_ep *ep)
449{
450 struct fotg210_udc *fotg210 = ep->fotg210;
451 u32 value;
452 void __iomem *reg;
453
454 /* check if IN FIFO is empty before stall */
455 if (ep->dir_in) {
456 do {
457 value = ioread32(fotg210->reg + FOTG210_DCFESR);
458 } while (!(value & DCFESR_FIFO_EMPTY(ep->epnum - 1)));
459 }
460
461 reg = (ep->dir_in) ?
462 fotg210->reg + FOTG210_INEPMPSR(ep->epnum) :
463 fotg210->reg + FOTG210_OUTEPMPSR(ep->epnum);
464 value = ioread32(reg);
465 value |= INOUTEPMPSR_STL_EP;
466 iowrite32(value, reg);
467}
468
469static void fotg210_clear_epnstall(struct fotg210_ep *ep)
470{
471 struct fotg210_udc *fotg210 = ep->fotg210;
472 u32 value;
473 void __iomem *reg;
474
475 reg = (ep->dir_in) ?
476 fotg210->reg + FOTG210_INEPMPSR(ep->epnum) :
477 fotg210->reg + FOTG210_OUTEPMPSR(ep->epnum);
478 value = ioread32(reg);
479 value &= ~INOUTEPMPSR_STL_EP;
480 iowrite32(value, reg);
481}
482
483static int fotg210_set_halt_and_wedge(struct usb_ep *_ep, int value, int wedge)
484{
485 struct fotg210_ep *ep;
486 struct fotg210_udc *fotg210;
487 unsigned long flags;
b84a8dee
YHC		 488
489 ep = container_of(_ep, struct fotg210_ep, ep);
490
491 fotg210 = ep->fotg210;
492
493 spin_lock_irqsave(&ep->fotg210->lock, flags);
494
495 if (value) {
496 fotg210_set_epnstall(ep);
497 ep->stall = 1;
498 if (wedge)
499 ep->wedged = 1;
500 } else {
501 fotg210_reset_tseq(fotg210, ep->epnum);
502 fotg210_clear_epnstall(ep);
503 ep->stall = 0;
504 ep->wedged = 0;
505 if (!list_empty(&ep->queue))
506 fotg210_enable_fifo_int(ep);
507 }
508
509 spin_unlock_irqrestore(&ep->fotg210->lock, flags);
811e5c3d 510 return 0;
b84a8dee
YHC		 511}
512
513static int fotg210_ep_set_halt(struct usb_ep *_ep, int value)
514{
515 return fotg210_set_halt_and_wedge(_ep, value, 0);
516}
517
518static int fotg210_ep_set_wedge(struct usb_ep *_ep)
519{
520 return fotg210_set_halt_and_wedge(_ep, 1, 1);
521}
522
523static void fotg210_ep_fifo_flush(struct usb_ep *_ep)
524{
525}
526
977ac789 527static const struct usb_ep_ops fotg210_ep_ops = {
b84a8dee
YHC		 528 .enable = fotg210_ep_enable,
529 .disable = fotg210_ep_disable,
530
531 .alloc_request = fotg210_ep_alloc_request,
532 .free_request = fotg210_ep_free_request,
533
534 .queue = fotg210_ep_queue,
535 .dequeue = fotg210_ep_dequeue,
536
537 .set_halt = fotg210_ep_set_halt,
538 .fifo_flush = fotg210_ep_fifo_flush,
539 .set_wedge = fotg210_ep_set_wedge,
540};
541
542static void fotg210_clear_tx0byte(struct fotg210_udc *fotg210)
543{
544 u32 value = ioread32(fotg210->reg + FOTG210_TX0BYTE);
545
546 value &= ~(TX0BYTE_EP1 | TX0BYTE_EP2 | TX0BYTE_EP3
547 | TX0BYTE_EP4);
548 iowrite32(value, fotg210->reg + FOTG210_TX0BYTE);
549}
550
551static void fotg210_clear_rx0byte(struct fotg210_udc *fotg210)
552{
553 u32 value = ioread32(fotg210->reg + FOTG210_RX0BYTE);
554
555 value &= ~(RX0BYTE_EP1 | RX0BYTE_EP2 | RX0BYTE_EP3
556 | RX0BYTE_EP4);
557 iowrite32(value, fotg210->reg + FOTG210_RX0BYTE);
558}
559
560/* read 8-byte setup packet only */
561static void fotg210_rdsetupp(struct fotg210_udc *fotg210,
562 u8 *buffer)
563{
564 int i = 0;
565 u8 *tmp = buffer;
566 u32 data;
567 u32 length = 8;
568
569 iowrite32(DMATFNR_ACC_CXF, fotg210->reg + FOTG210_DMATFNR);
570
571 for (i = (length >> 2); i > 0; i--) {
572 data = ioread32(fotg210->reg + FOTG210_CXPORT);
573 *tmp = data & 0xFF;
574 *(tmp + 1) = (data >> 8) & 0xFF;
575 *(tmp + 2) = (data >> 16) & 0xFF;
576 *(tmp + 3) = (data >> 24) & 0xFF;
577 tmp = tmp + 4;
578 }
579
580 switch (length % 4) {
581 case 1:
582 data = ioread32(fotg210->reg + FOTG210_CXPORT);
583 *tmp = data & 0xFF;
584 break;
585 case 2:
586 data = ioread32(fotg210->reg + FOTG210_CXPORT);
587 *tmp = data & 0xFF;
588 *(tmp + 1) = (data >> 8) & 0xFF;
589 break;
590 case 3:
591 data = ioread32(fotg210->reg + FOTG210_CXPORT);
592 *tmp = data & 0xFF;
593 *(tmp + 1) = (data >> 8) & 0xFF;
594 *(tmp + 2) = (data >> 16) & 0xFF;
595 break;
596 default:
597 break;
598 }
599
600 iowrite32(DMATFNR_DISDMA, fotg210->reg + FOTG210_DMATFNR);
601}
602
603static void fotg210_set_configuration(struct fotg210_udc *fotg210)
604{
605 u32 value = ioread32(fotg210->reg + FOTG210_DAR);
606
607 value |= DAR_AFT_CONF;
608 iowrite32(value, fotg210->reg + FOTG210_DAR);
609}
610
611static void fotg210_set_dev_addr(struct fotg210_udc *fotg210, u32 addr)
612{
613 u32 value = ioread32(fotg210->reg + FOTG210_DAR);
614
615 value |= (addr & 0x7F);
616 iowrite32(value, fotg210->reg + FOTG210_DAR);
617}
618
619static void fotg210_set_cxstall(struct fotg210_udc *fotg210)
620{
621 u32 value = ioread32(fotg210->reg + FOTG210_DCFESR);
622
623 value |= DCFESR_CX_STL;
624 iowrite32(value, fotg210->reg + FOTG210_DCFESR);
625}
626
627static void fotg210_request_error(struct fotg210_udc *fotg210)
628{
629 fotg210_set_cxstall(fotg210);
630 pr_err("request error!!\n");
631}
632
633static void fotg210_set_address(struct fotg210_udc *fotg210,
634 struct usb_ctrlrequest *ctrl)
635{
46ed6026 636 if (le16_to_cpu(ctrl->wValue) >= 0x0100) {
b84a8dee
YHC		 637 fotg210_request_error(fotg210);
638 } else {
46ed6026 639 fotg210_set_dev_addr(fotg210, le16_to_cpu(ctrl->wValue));
b84a8dee
YHC		 640 fotg210_set_cxdone(fotg210);
641 }
642}
643
644static void fotg210_set_feature(struct fotg210_udc *fotg210,
645 struct usb_ctrlrequest *ctrl)
646{
647 switch (ctrl->bRequestType & USB_RECIP_MASK) {
648 case USB_RECIP_DEVICE:
649 fotg210_set_cxdone(fotg210);
650 break;
651 case USB_RECIP_INTERFACE:
652 fotg210_set_cxdone(fotg210);
653 break;
654 case USB_RECIP_ENDPOINT: {
655 u8 epnum;
656 epnum = le16_to_cpu(ctrl->wIndex) & USB_ENDPOINT_NUMBER_MASK;
657 if (epnum)
658 fotg210_set_epnstall(fotg210->ep[epnum]);
659 else
660 fotg210_set_cxstall(fotg210);
661 fotg210_set_cxdone(fotg210);
662 }
663 break;
664 default:
665 fotg210_request_error(fotg210);
666 break;
667 }
668}
669
670static void fotg210_clear_feature(struct fotg210_udc *fotg210,
671 struct usb_ctrlrequest *ctrl)
672{
673 struct fotg210_ep *ep =
674 fotg210->ep[ctrl->wIndex & USB_ENDPOINT_NUMBER_MASK];
675
676 switch (ctrl->bRequestType & USB_RECIP_MASK) {
677 case USB_RECIP_DEVICE:
678 fotg210_set_cxdone(fotg210);
679 break;
680 case USB_RECIP_INTERFACE:
681 fotg210_set_cxdone(fotg210);
682 break;
683 case USB_RECIP_ENDPOINT:
684 if (ctrl->wIndex & USB_ENDPOINT_NUMBER_MASK) {
685 if (ep->wedged) {
686 fotg210_set_cxdone(fotg210);
687 break;
688 }
689 if (ep->stall)
690 fotg210_set_halt_and_wedge(&ep->ep, 0, 0);
691 }
692 fotg210_set_cxdone(fotg210);
693 break;
694 default:
695 fotg210_request_error(fotg210);
696 break;
697 }
698}
699
700static int fotg210_is_epnstall(struct fotg210_ep *ep)
701{
702 struct fotg210_udc *fotg210 = ep->fotg210;
703 u32 value;
704 void __iomem *reg;
705
706 reg = (ep->dir_in) ?
707 fotg210->reg + FOTG210_INEPMPSR(ep->epnum) :
708 fotg210->reg + FOTG210_OUTEPMPSR(ep->epnum);
709 value = ioread32(reg);
710 return value & INOUTEPMPSR_STL_EP ? 1 : 0;
711}
712
713static void fotg210_get_status(struct fotg210_udc *fotg210,
714 struct usb_ctrlrequest *ctrl)
715{
716 u8 epnum;
717
718 switch (ctrl->bRequestType & USB_RECIP_MASK) {
719 case USB_RECIP_DEVICE:
46ed6026 720 fotg210->ep0_data = cpu_to_le16(1 << USB_DEVICE_SELF_POWERED);
b84a8dee
YHC		 721 break;
722 case USB_RECIP_INTERFACE:
46ed6026 723 fotg210->ep0_data = cpu_to_le16(0);
b84a8dee
YHC		 724 break;
725 case USB_RECIP_ENDPOINT:
726 epnum = ctrl->wIndex & USB_ENDPOINT_NUMBER_MASK;
727 if (epnum)
728 fotg210->ep0_data =
46ed6026
LW		 729 cpu_to_le16(fotg210_is_epnstall(fotg210->ep[epnum])
730 << USB_ENDPOINT_HALT);
b84a8dee
YHC		 731 else
732 fotg210_request_error(fotg210);
733 break;
734
735 default:
736 fotg210_request_error(fotg210);
737 return; /* exit */
738 }
739
740 fotg210->ep0_req->buf = &fotg210->ep0_data;
741 fotg210->ep0_req->length = 2;
742
743 spin_unlock(&fotg210->lock);
2337a77c 744 fotg210_ep_queue(fotg210->gadget.ep0, fotg210->ep0_req, GFP_ATOMIC);
b84a8dee
YHC		 745 spin_lock(&fotg210->lock);
746}
747
748static int fotg210_setup_packet(struct fotg210_udc *fotg210,
749 struct usb_ctrlrequest *ctrl)
750{
751 u8 *p = (u8 *)ctrl;
752 u8 ret = 0;
753
754 fotg210_rdsetupp(fotg210, p);
755
756 fotg210->ep[0]->dir_in = ctrl->bRequestType & USB_DIR_IN;
757
758 if (fotg210->gadget.speed == USB_SPEED_UNKNOWN) {
759 u32 value = ioread32(fotg210->reg + FOTG210_DMCR);
760 fotg210->gadget.speed = value & DMCR_HS_EN ?
761 USB_SPEED_HIGH : USB_SPEED_FULL;
762 }
763
764 /* check request */
765 if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) {
766 switch (ctrl->bRequest) {
767 case USB_REQ_GET_STATUS:
768 fotg210_get_status(fotg210, ctrl);
769 break;
770 case USB_REQ_CLEAR_FEATURE:
771 fotg210_clear_feature(fotg210, ctrl);
772 break;
773 case USB_REQ_SET_FEATURE:
774 fotg210_set_feature(fotg210, ctrl);
775 break;
776 case USB_REQ_SET_ADDRESS:
777 fotg210_set_address(fotg210, ctrl);
778 break;
779 case USB_REQ_SET_CONFIGURATION:
780 fotg210_set_configuration(fotg210);
781 ret = 1;
782 break;
783 default:
784 ret = 1;
785 break;
786 }
787 } else {
788 ret = 1;
789 }
790
791 return ret;
792}
793
794static void fotg210_ep0out(struct fotg210_udc *fotg210)
795{
796 struct fotg210_ep *ep = fotg210->ep[0];
797
798 if (!list_empty(&ep->queue) && !ep->dir_in) {
799 struct fotg210_request *req;
800
801 req = list_first_entry(&ep->queue,
802 struct fotg210_request, queue);
803
804 if (req->req.length)
805 fotg210_start_dma(ep, req);
806
807 if ((req->req.length - req->req.actual) < ep->ep.maxpacket)
808 fotg210_done(ep, req, 0);
809 } else {
810 pr_err("%s : empty queue\n", __func__);
811 }
812}
813
814static void fotg210_ep0in(struct fotg210_udc *fotg210)
815{
816 struct fotg210_ep *ep = fotg210->ep[0];
817
818 if ((!list_empty(&ep->queue)) && (ep->dir_in)) {
819 struct fotg210_request *req;
820
821 req = list_entry(ep->queue.next,
822 struct fotg210_request, queue);
823
824 if (req->req.length)
825 fotg210_start_dma(ep, req);
826
078ba935 827 if (req->req.actual == req->req.length)
b84a8dee
YHC		 828 fotg210_done(ep, req, 0);
829 } else {
830 fotg210_set_cxdone(fotg210);
831 }
832}
833
834static void fotg210_clear_comabt_int(struct fotg210_udc *fotg210)
835{
836 u32 value = ioread32(fotg210->reg + FOTG210_DISGR0);
837
838 value &= ~DISGR0_CX_COMABT_INT;
839 iowrite32(value, fotg210->reg + FOTG210_DISGR0);
840}
841
842static void fotg210_in_fifo_handler(struct fotg210_ep *ep)
843{
844 struct fotg210_request *req = list_entry(ep->queue.next,
845 struct fotg210_request, queue);
846
847 if (req->req.length)
848 fotg210_start_dma(ep, req);
849 fotg210_done(ep, req, 0);
850}
851
852static void fotg210_out_fifo_handler(struct fotg210_ep *ep)
853{
854 struct fotg210_request *req = list_entry(ep->queue.next,
855 struct fotg210_request, queue);
75bb93be 856 int disgr1 = ioread32(ep->fotg210->reg + FOTG210_DISGR1);
b84a8dee
YHC		 857
858 fotg210_start_dma(ep, req);
859
75bb93be
FV		 860 /* Complete the request when it's full or a short packet arrived.
861 * Like other drivers, short_not_ok isn't handled.
862 */
863
b84a8dee 864 if (req->req.length == req->req.actual ||
75bb93be 865 (disgr1 & DISGR1_SPK_INT(ep->epnum - 1)))
b84a8dee
YHC		 866 fotg210_done(ep, req, 0);
867}
868
869static irqreturn_t fotg210_irq(int irq, void *_fotg210)
870{
871 struct fotg210_udc *fotg210 = _fotg210;
872 u32 int_grp = ioread32(fotg210->reg + FOTG210_DIGR);
873 u32 int_msk = ioread32(fotg210->reg + FOTG210_DMIGR);
874
875 int_grp &= ~int_msk;
876
877 spin_lock(&fotg210->lock);
878
879 if (int_grp & DIGR_INT_G2) {
880 void __iomem *reg = fotg210->reg + FOTG210_DISGR2;
881 u32 int_grp2 = ioread32(reg);
882 u32 int_msk2 = ioread32(fotg210->reg + FOTG210_DMISGR2);
883 u32 value;
884
885 int_grp2 &= ~int_msk2;
886
887 if (int_grp2 & DISGR2_USBRST_INT) {
fe8f103a
FV		 888 usb_gadget_udc_reset(&fotg210->gadget,
889 fotg210->driver);
b84a8dee
YHC		 890 value = ioread32(reg);
891 value &= ~DISGR2_USBRST_INT;
892 iowrite32(value, reg);
893 pr_info("fotg210 udc reset\n");
894 }
895 if (int_grp2 & DISGR2_SUSP_INT) {
896 value = ioread32(reg);
897 value &= ~DISGR2_SUSP_INT;
898 iowrite32(value, reg);
899 pr_info("fotg210 udc suspend\n");
900 }
901 if (int_grp2 & DISGR2_RESM_INT) {
902 value = ioread32(reg);
903 value &= ~DISGR2_RESM_INT;
904 iowrite32(value, reg);
905 pr_info("fotg210 udc resume\n");
906 }
907 if (int_grp2 & DISGR2_ISO_SEQ_ERR_INT) {
908 value = ioread32(reg);
909 value &= ~DISGR2_ISO_SEQ_ERR_INT;
910 iowrite32(value, reg);
911 pr_info("fotg210 iso sequence error\n");
912 }
913 if (int_grp2 & DISGR2_ISO_SEQ_ABORT_INT) {
914 value = ioread32(reg);
915 value &= ~DISGR2_ISO_SEQ_ABORT_INT;
916 iowrite32(value, reg);
917 pr_info("fotg210 iso sequence abort\n");
918 }
919 if (int_grp2 & DISGR2_TX0BYTE_INT) {
920 fotg210_clear_tx0byte(fotg210);
921 value = ioread32(reg);
922 value &= ~DISGR2_TX0BYTE_INT;
923 iowrite32(value, reg);
924 pr_info("fotg210 transferred 0 byte\n");
925 }
926 if (int_grp2 & DISGR2_RX0BYTE_INT) {
927 fotg210_clear_rx0byte(fotg210);
928 value = ioread32(reg);
929 value &= ~DISGR2_RX0BYTE_INT;
930 iowrite32(value, reg);
931 pr_info("fotg210 received 0 byte\n");
932 }
933 if (int_grp2 & DISGR2_DMA_ERROR) {
934 value = ioread32(reg);
935 value &= ~DISGR2_DMA_ERROR;
936 iowrite32(value, reg);
937 }
938 }
939
940 if (int_grp & DIGR_INT_G0) {
941 void __iomem *reg = fotg210->reg + FOTG210_DISGR0;
942 u32 int_grp0 = ioread32(reg);
943 u32 int_msk0 = ioread32(fotg210->reg + FOTG210_DMISGR0);
944 struct usb_ctrlrequest ctrl;
945
946 int_grp0 &= ~int_msk0;
947
948 /* the highest priority in this source register */
949 if (int_grp0 & DISGR0_CX_COMABT_INT) {
950 fotg210_clear_comabt_int(fotg210);
951 pr_info("fotg210 CX command abort\n");
952 }
953
954 if (int_grp0 & DISGR0_CX_SETUP_INT) {
955 if (fotg210_setup_packet(fotg210, &ctrl)) {
956 spin_unlock(&fotg210->lock);
957 if (fotg210->driver->setup(&fotg210->gadget,
958 &ctrl) < 0)
959 fotg210_set_cxstall(fotg210);
960 spin_lock(&fotg210->lock);
961 }
962 }
963 if (int_grp0 & DISGR0_CX_COMEND_INT)
964 pr_info("fotg210 cmd end\n");
965
966 if (int_grp0 & DISGR0_CX_IN_INT)
967 fotg210_ep0in(fotg210);
968
969 if (int_grp0 & DISGR0_CX_OUT_INT)
970 fotg210_ep0out(fotg210);
971
972 if (int_grp0 & DISGR0_CX_COMFAIL_INT) {
973 fotg210_set_cxstall(fotg210);
974 pr_info("fotg210 ep0 fail\n");
975 }
976 }
977
978 if (int_grp & DIGR_INT_G1) {
979 void __iomem *reg = fotg210->reg + FOTG210_DISGR1;
980 u32 int_grp1 = ioread32(reg);
981 u32 int_msk1 = ioread32(fotg210->reg + FOTG210_DMISGR1);
982 int fifo;
983
984 int_grp1 &= ~int_msk1;
985
986 for (fifo = 0; fifo < FOTG210_MAX_FIFO_NUM; fifo++) {
987 if (int_grp1 & DISGR1_IN_INT(fifo))
988 fotg210_in_fifo_handler(fotg210->ep[fifo + 1]);
989
990 if ((int_grp1 & DISGR1_OUT_INT(fifo)) ||
991 (int_grp1 & DISGR1_SPK_INT(fifo)))
992 fotg210_out_fifo_handler(fotg210->ep[fifo + 1]);
993 }
994 }
995
996 spin_unlock(&fotg210->lock);
997
998 return IRQ_HANDLED;
999}
1000
1001static void fotg210_disable_unplug(struct fotg210_udc *fotg210)
1002{
1003 u32 reg = ioread32(fotg210->reg + FOTG210_PHYTMSR);
1004
1005 reg &= ~PHYTMSR_UNPLUG;
1006 iowrite32(reg, fotg210->reg + FOTG210_PHYTMSR);
1007}
1008
1009static int fotg210_udc_start(struct usb_gadget *g,
1010 struct usb_gadget_driver *driver)
1011{
1012 struct fotg210_udc *fotg210 = gadget_to_fotg210(g);
1013 u32 value;
5f217ccd 1014 int ret;
b84a8dee
YHC		 1015
1016 /* hook up the driver */
b84a8dee
YHC		 1017 fotg210->driver = driver;
1018
5f217ccd
LW		 1019 if (!IS_ERR_OR_NULL(fotg210->phy)) {
1020 ret = otg_set_peripheral(fotg210->phy->otg,
1021 &fotg210->gadget);
1022 if (ret)
1023 dev_err(fotg210->dev, "can't bind to phy\n");
1024 }
1025
b84a8dee
YHC		 1026 /* enable device global interrupt */
1027 value = ioread32(fotg210->reg + FOTG210_DMCR);
1028 value |= DMCR_GLINT_EN;
1029 iowrite32(value, fotg210->reg + FOTG210_DMCR);
1030
1031 return 0;
1032}
1033
1034static void fotg210_init(struct fotg210_udc *fotg210)
1035{
1036 u32 value;
1037
1038 /* disable global interrupt and set int polarity to active high */
1039 iowrite32(GMIR_MHC_INT | GMIR_MOTG_INT | GMIR_INT_POLARITY,
1040 fotg210->reg + FOTG210_GMIR);
1041
1042 /* disable device global interrupt */
1043 value = ioread32(fotg210->reg + FOTG210_DMCR);
1044 value &= ~DMCR_GLINT_EN;
1045 iowrite32(value, fotg210->reg + FOTG210_DMCR);
1046
9aee3a23
FV		 1047 /* enable only grp2 irqs we handle */
1048 iowrite32(~(DISGR2_DMA_ERROR | DISGR2_RX0BYTE_INT | DISGR2_TX0BYTE_INT
1049 | DISGR2_ISO_SEQ_ABORT_INT | DISGR2_ISO_SEQ_ERR_INT
1050 | DISGR2_RESM_INT | DISGR2_SUSP_INT | DISGR2_USBRST_INT),
1051 fotg210->reg + FOTG210_DMISGR2);
1052
b84a8dee
YHC		 1053 /* disable all fifo interrupt */
1054 iowrite32(~(u32)0, fotg210->reg + FOTG210_DMISGR1);
1055
1056 /* disable cmd end */
1057 value = ioread32(fotg210->reg + FOTG210_DMISGR0);
1058 value |= DMISGR0_MCX_COMEND;
1059 iowrite32(value, fotg210->reg + FOTG210_DMISGR0);
1060}
1061
22835b80 1062static int fotg210_udc_stop(struct usb_gadget *g)
b84a8dee
YHC		 1063{
1064 struct fotg210_udc *fotg210 = gadget_to_fotg210(g);
1065 unsigned long flags;
1066
5f217ccd
LW		 1067 if (!IS_ERR_OR_NULL(fotg210->phy))
1068 return otg_set_peripheral(fotg210->phy->otg, NULL);
1069
b84a8dee
YHC		 1070 spin_lock_irqsave(&fotg210->lock, flags);
1071
1072 fotg210_init(fotg210);
1073 fotg210->driver = NULL;
1074
1075 spin_unlock_irqrestore(&fotg210->lock, flags);
1076
1077 return 0;
1078}
1079
bee56235 1080static const struct usb_gadget_ops fotg210_gadget_ops = {
b84a8dee
YHC		 1081 .udc_start = fotg210_udc_start,
1082 .udc_stop = fotg210_udc_stop,
1083};
1084
5f217ccd
LW		 1085/**
1086 * fotg210_phy_event - Called by phy upon VBus event
1087 * @nb: notifier block
1088 * @action: phy action, is vbus connect or disconnect
1089 * @data: the usb_gadget structure in fotg210
1090 *
1091 * Called by the USB Phy when a cable connect or disconnect is sensed.
1092 *
1093 * Returns NOTIFY_OK or NOTIFY_DONE
1094 */
1095static int fotg210_phy_event(struct notifier_block *nb, unsigned long action,
1096 void *data)
1097{
1098 struct usb_gadget *gadget = data;
1099
1100 if (!gadget)
1101 return NOTIFY_DONE;
1102
1103 switch (action) {
1104 case USB_EVENT_VBUS:
1105 usb_gadget_vbus_connect(gadget);
1106 return NOTIFY_OK;
1107 case USB_EVENT_NONE:
1108 usb_gadget_vbus_disconnect(gadget);
1109 return NOTIFY_OK;
1110 default:
1111 return NOTIFY_DONE;
1112 }
1113}
1114
1115static struct notifier_block fotg210_phy_notifier = {
1116 .notifier_call = fotg210_phy_event,
1117};
1118
aeffd2c3 1119int fotg210_udc_remove(struct platform_device *pdev)
b84a8dee 1120{
3cb40a59 1121 struct fotg210_udc *fotg210 = platform_get_drvdata(pdev);
c37bd528 1122 int i;
b84a8dee
YHC		 1123
1124 usb_del_gadget_udc(&fotg210->gadget);
5f217ccd
LW		 1125 if (!IS_ERR_OR_NULL(fotg210->phy)) {
1126 usb_unregister_notifier(fotg210->phy, &fotg210_phy_notifier);
1127 usb_put_phy(fotg210->phy);
1128 }
b84a8dee
YHC		 1129 iounmap(fotg210->reg);
1130 free_irq(platform_get_irq(pdev, 0), fotg210);
1131
1132 fotg210_ep_free_request(&fotg210->ep[0]->ep, fotg210->ep0_req);
c37bd528
AV		 1133 for (i = 0; i < FOTG210_MAX_NUM_EP; i++)
1134 kfree(fotg210->ep[i]);
718a38d0
LW		 1135
1136 if (!IS_ERR(fotg210->pclk))
1137 clk_disable_unprepare(fotg210->pclk);
1138
b84a8dee
YHC		 1139 kfree(fotg210);
1140
1141 return 0;
1142}
1143
aeffd2c3 1144int fotg210_udc_probe(struct platform_device *pdev)
b84a8dee 1145{
f8b729ce 1146 struct resource *res;
b84a8dee 1147 struct fotg210_udc *fotg210 = NULL;
d40eaada 1148 struct device *dev = &pdev->dev;
f8b729ce 1149 int irq;
b84a8dee
YHC		 1150 int ret = 0;
1151 int i;
1152
1153 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1154 if (!res) {
1155 pr_err("platform_get_resource error.\n");
1156 return -ENODEV;
1157 }
1158
f8b729ce
LW		 1159 irq = platform_get_irq(pdev, 0);
1160 if (irq < 0) {
1161 pr_err("could not get irq\n");
b84a8dee
YHC		 1162 return -ENODEV;
1163 }
1164
b84a8dee
YHC		 1165 /* initialize udc */
1166 fotg210 = kzalloc(sizeof(struct fotg210_udc), GFP_KERNEL);
0351c329 1167 if (fotg210 == NULL)
0cd142b4 1168 return -ENOMEM;
b84a8dee 1169
5f217ccd
LW		 1170 fotg210->dev = dev;
1171
718a38d0
LW		 1172 /* It's OK not to supply this clock */
1173 fotg210->pclk = devm_clk_get(dev, "PCLK");
1174 if (!IS_ERR(fotg210->pclk)) {
1175 ret = clk_prepare_enable(fotg210->pclk);
1176 if (ret) {
1177 dev_err(dev, "failed to enable PCLK\n");
0cd142b4 1178 goto err;
718a38d0
LW		 1179 }
1180 } else if (PTR_ERR(fotg210->pclk) == -EPROBE_DEFER) {
1181 /*
1182 * Percolate deferrals, for anything else,
1183 * just live without the clocking.
1184 */
1185 ret = -EPROBE_DEFER;
1186 goto err;
1187 }
1188
f8b729ce 1189 fotg210->phy = devm_usb_get_phy_by_phandle(dev, "usb-phy", 0);
5f217ccd
LW		 1190 if (IS_ERR(fotg210->phy)) {
1191 ret = PTR_ERR(fotg210->phy);
1192 if (ret == -EPROBE_DEFER)
718a38d0 1193 goto err_pclk;
5f217ccd
LW		 1194 dev_info(dev, "no PHY found\n");
1195 fotg210->phy = NULL;
1196 } else {
1197 ret = usb_phy_init(fotg210->phy);
1198 if (ret)
718a38d0 1199 goto err_pclk;
5f217ccd
LW		 1200 dev_info(dev, "found and initialized PHY\n");
1201 }
1202
1a5a23b9
YY		 1203 ret = -ENOMEM;
1204
b84a8dee 1205 for (i = 0; i < FOTG210_MAX_NUM_EP; i++) {
202f785b
CJ		 1206 fotg210->ep[i] = kzalloc(sizeof(struct fotg210_ep), GFP_KERNEL);
1207 if (!fotg210->ep[i])
b84a8dee 1208 goto err_alloc;
b84a8dee
YHC		 1209 }
1210
1211 fotg210->reg = ioremap(res->start, resource_size(res));
1212 if (fotg210->reg == NULL) {
d40eaada 1213 dev_err(dev, "ioremap error\n");
c37bd528 1214 goto err_alloc;
b84a8dee
YHC		 1215 }
1216
1217 spin_lock_init(&fotg210->lock);
1218
3cb40a59 1219 platform_set_drvdata(pdev, fotg210);
b84a8dee
YHC		 1220
1221 fotg210->gadget.ops = &fotg210_gadget_ops;
1222
1223 fotg210->gadget.max_speed = USB_SPEED_HIGH;
d40eaada
LW		 1224 fotg210->gadget.dev.parent = dev;
1225 fotg210->gadget.dev.dma_mask = dev->dma_mask;
b84a8dee
YHC		 1226 fotg210->gadget.name = udc_name;
1227
1228 INIT_LIST_HEAD(&fotg210->gadget.ep_list);
1229
1230 for (i = 0; i < FOTG210_MAX_NUM_EP; i++) {
1231 struct fotg210_ep *ep = fotg210->ep[i];
1232
1233 if (i) {
1234 INIT_LIST_HEAD(&fotg210->ep[i]->ep.ep_list);
1235 list_add_tail(&fotg210->ep[i]->ep.ep_list,
1236 &fotg210->gadget.ep_list);
1237 }
1238 ep->fotg210 = fotg210;
1239 INIT_LIST_HEAD(&ep->queue);
1240 ep->ep.name = fotg210_ep_name[i];
1241 ep->ep.ops = &fotg210_ep_ops;
e117e742 1242 usb_ep_set_maxpacket_limit(&ep->ep, (unsigned short) ~0);
8d29237a
RB		 1243
1244 if (i == 0) {
1245 ep->ep.caps.type_control = true;
1246 } else {
1247 ep->ep.caps.type_iso = true;
1248 ep->ep.caps.type_bulk = true;
1249 ep->ep.caps.type_int = true;
1250 }
1251
1252 ep->ep.caps.dir_in = true;
1253 ep->ep.caps.dir_out = true;
b84a8dee 1254 }
e117e742 1255 usb_ep_set_maxpacket_limit(&fotg210->ep[0]->ep, 0x40);
b84a8dee
YHC		 1256 fotg210->gadget.ep0 = &fotg210->ep[0]->ep;
1257 INIT_LIST_HEAD(&fotg210->gadget.ep0->ep_list);
1258
1259 fotg210->ep0_req = fotg210_ep_alloc_request(&fotg210->ep[0]->ep,
1260 GFP_KERNEL);
1261 if (fotg210->ep0_req == NULL)
c37bd528 1262 goto err_map;
b84a8dee
YHC		 1263
1264 fotg210_init(fotg210);
1265
1266 fotg210_disable_unplug(fotg210);
1267
f8b729ce 1268 ret = request_irq(irq, fotg210_irq, IRQF_SHARED,
b84a8dee
YHC		 1269 udc_name, fotg210);
1270 if (ret < 0) {
d40eaada 1271 dev_err(dev, "request_irq error (%d)\n", ret);
2184fe63 1272 goto err_req;
b84a8dee
YHC		 1273 }
1274
5f217ccd
LW		 1275 if (!IS_ERR_OR_NULL(fotg210->phy))
1276 usb_register_notifier(fotg210->phy, &fotg210_phy_notifier);
1277
d40eaada 1278 ret = usb_add_gadget_udc(dev, &fotg210->gadget);
b84a8dee
YHC		 1279 if (ret)
1280 goto err_add_udc;
1281
d40eaada 1282 dev_info(dev, "version %s\n", DRIVER_VERSION);
b84a8dee
YHC		 1283
1284 return 0;
1285
1286err_add_udc:
5f217ccd
LW		 1287 if (!IS_ERR_OR_NULL(fotg210->phy))
1288 usb_unregister_notifier(fotg210->phy, &fotg210_phy_notifier);
f8b729ce 1289 free_irq(irq, fotg210);
b84a8dee
YHC		 1290
1291err_req:
1292 fotg210_ep_free_request(&fotg210->ep[0]->ep, fotg210->ep0_req);
1293
1294err_map:
c37bd528 1295 iounmap(fotg210->reg);
b84a8dee
YHC		 1296
1297err_alloc:
c37bd528
AV		 1298 for (i = 0; i < FOTG210_MAX_NUM_EP; i++)
1299 kfree(fotg210->ep[i]);
718a38d0
LW		 1300err_pclk:
1301 if (!IS_ERR(fotg210->pclk))
1302 clk_disable_unprepare(fotg210->pclk);
1303
c37bd528 1304err:
0cd142b4 1305 kfree(fotg210);
b84a8dee
YHC		 1306 return ret;
1307}
Linux 6.x block layer and io_uring tree(s)