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b84a8dee YHC |
1 | /* |
2 | * FOTG210 UDC Driver supports Bulk transfer so far | |
3 | * | |
4 | * Copyright (C) 2013 Faraday Technology Corporation | |
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 | ||
13 | #include <linux/dma-mapping.h> | |
14 | #include <linux/err.h> | |
15 | #include <linux/interrupt.h> | |
16 | #include <linux/io.h> | |
17 | #include <linux/module.h> | |
18 | #include <linux/platform_device.h> | |
19 | #include <linux/usb/ch9.h> | |
20 | #include <linux/usb/gadget.h> | |
21 | ||
22 | #include "fotg210.h" | |
23 | ||
24 | #define DRIVER_DESC "FOTG210 USB Device Controller Driver" | |
25 | #define DRIVER_VERSION "30-April-2013" | |
26 | ||
27 | static const char udc_name[] = "fotg210_udc"; | |
28 | static const char * const fotg210_ep_name[] = { | |
29 | "ep0", "ep1", "ep2", "ep3", "ep4"}; | |
30 | ||
31 | static void fotg210_disable_fifo_int(struct fotg210_ep *ep) | |
32 | { | |
33 | u32 value = ioread32(ep->fotg210->reg + FOTG210_DMISGR1); | |
34 | ||
35 | if (ep->dir_in) | |
36 | value |= DMISGR1_MF_IN_INT(ep->epnum - 1); | |
37 | else | |
38 | value |= DMISGR1_MF_OUTSPK_INT(ep->epnum - 1); | |
39 | iowrite32(value, ep->fotg210->reg + FOTG210_DMISGR1); | |
40 | } | |
41 | ||
42 | static void fotg210_enable_fifo_int(struct fotg210_ep *ep) | |
43 | { | |
44 | u32 value = ioread32(ep->fotg210->reg + FOTG210_DMISGR1); | |
45 | ||
46 | if (ep->dir_in) | |
47 | value &= ~DMISGR1_MF_IN_INT(ep->epnum - 1); | |
48 | else | |
49 | value &= ~DMISGR1_MF_OUTSPK_INT(ep->epnum - 1); | |
50 | iowrite32(value, ep->fotg210->reg + FOTG210_DMISGR1); | |
51 | } | |
52 | ||
53 | static void fotg210_set_cxdone(struct fotg210_udc *fotg210) | |
54 | { | |
55 | u32 value = ioread32(fotg210->reg + FOTG210_DCFESR); | |
56 | ||
57 | value |= DCFESR_CX_DONE; | |
58 | iowrite32(value, fotg210->reg + FOTG210_DCFESR); | |
59 | } | |
60 | ||
61 | static void fotg210_done(struct fotg210_ep *ep, struct fotg210_request *req, | |
62 | int status) | |
63 | { | |
64 | list_del_init(&req->queue); | |
65 | ||
66 | /* don't modify queue heads during completion callback */ | |
67 | if (ep->fotg210->gadget.speed == USB_SPEED_UNKNOWN) | |
68 | req->req.status = -ESHUTDOWN; | |
69 | else | |
70 | req->req.status = status; | |
71 | ||
72 | spin_unlock(&ep->fotg210->lock); | |
73 | req->req.complete(&ep->ep, &req->req); | |
74 | spin_lock(&ep->fotg210->lock); | |
75 | ||
76 | if (ep->epnum) { | |
77 | if (list_empty(&ep->queue)) | |
78 | fotg210_disable_fifo_int(ep); | |
79 | } else { | |
80 | fotg210_set_cxdone(ep->fotg210); | |
81 | } | |
82 | } | |
83 | ||
84 | static void fotg210_fifo_ep_mapping(struct fotg210_ep *ep, u32 epnum, | |
85 | u32 dir_in) | |
86 | { | |
87 | struct fotg210_udc *fotg210 = ep->fotg210; | |
88 | u32 val; | |
89 | ||
90 | /* Driver should map an ep to a fifo and then map the fifo | |
91 | * to the ep. What a brain-damaged design! | |
92 | */ | |
93 | ||
94 | /* map a fifo to an ep */ | |
95 | val = ioread32(fotg210->reg + FOTG210_EPMAP); | |
96 | val &= ~EPMAP_FIFONOMSK(epnum, dir_in); | |
97 | val |= EPMAP_FIFONO(epnum, dir_in); | |
98 | iowrite32(val, fotg210->reg + FOTG210_EPMAP); | |
99 | ||
100 | /* map the ep to the fifo */ | |
101 | val = ioread32(fotg210->reg + FOTG210_FIFOMAP); | |
102 | val &= ~FIFOMAP_EPNOMSK(epnum); | |
103 | val |= FIFOMAP_EPNO(epnum); | |
104 | iowrite32(val, fotg210->reg + FOTG210_FIFOMAP); | |
105 | ||
106 | /* enable fifo */ | |
107 | val = ioread32(fotg210->reg + FOTG210_FIFOCF); | |
108 | val |= FIFOCF_FIFO_EN(epnum - 1); | |
109 | iowrite32(val, fotg210->reg + FOTG210_FIFOCF); | |
110 | } | |
111 | ||
112 | static void fotg210_set_fifo_dir(struct fotg210_ep *ep, u32 epnum, u32 dir_in) | |
113 | { | |
114 | struct fotg210_udc *fotg210 = ep->fotg210; | |
115 | u32 val; | |
116 | ||
117 | val = ioread32(fotg210->reg + FOTG210_FIFOMAP); | |
118 | val |= (dir_in ? FIFOMAP_DIRIN(epnum - 1) : FIFOMAP_DIROUT(epnum - 1)); | |
119 | iowrite32(val, fotg210->reg + FOTG210_FIFOMAP); | |
120 | } | |
121 | ||
122 | static void fotg210_set_tfrtype(struct fotg210_ep *ep, u32 epnum, u32 type) | |
123 | { | |
124 | struct fotg210_udc *fotg210 = ep->fotg210; | |
125 | u32 val; | |
126 | ||
127 | val = ioread32(fotg210->reg + FOTG210_FIFOCF); | |
128 | val |= FIFOCF_TYPE(type, epnum - 1); | |
129 | iowrite32(val, fotg210->reg + FOTG210_FIFOCF); | |
130 | } | |
131 | ||
132 | static void fotg210_set_mps(struct fotg210_ep *ep, u32 epnum, u32 mps, | |
133 | u32 dir_in) | |
134 | { | |
135 | struct fotg210_udc *fotg210 = ep->fotg210; | |
136 | u32 val; | |
137 | u32 offset = dir_in ? FOTG210_INEPMPSR(epnum) : | |
138 | FOTG210_OUTEPMPSR(epnum); | |
139 | ||
140 | val = ioread32(fotg210->reg + offset); | |
141 | val |= INOUTEPMPSR_MPS(mps); | |
142 | iowrite32(val, fotg210->reg + offset); | |
143 | } | |
144 | ||
145 | static int fotg210_config_ep(struct fotg210_ep *ep, | |
146 | const struct usb_endpoint_descriptor *desc) | |
147 | { | |
148 | struct fotg210_udc *fotg210 = ep->fotg210; | |
149 | ||
150 | fotg210_set_fifo_dir(ep, ep->epnum, ep->dir_in); | |
151 | fotg210_set_tfrtype(ep, ep->epnum, ep->type); | |
152 | fotg210_set_mps(ep, ep->epnum, ep->ep.maxpacket, ep->dir_in); | |
153 | fotg210_fifo_ep_mapping(ep, ep->epnum, ep->dir_in); | |
154 | ||
155 | fotg210->ep[ep->epnum] = ep; | |
156 | ||
157 | return 0; | |
158 | } | |
159 | ||
160 | static int fotg210_ep_enable(struct usb_ep *_ep, | |
161 | const struct usb_endpoint_descriptor *desc) | |
162 | { | |
163 | struct fotg210_ep *ep; | |
164 | ||
165 | ep = container_of(_ep, struct fotg210_ep, ep); | |
166 | ||
167 | ep->desc = desc; | |
168 | ep->epnum = usb_endpoint_num(desc); | |
169 | ep->type = usb_endpoint_type(desc); | |
170 | ep->dir_in = usb_endpoint_dir_in(desc); | |
171 | ep->ep.maxpacket = usb_endpoint_maxp(desc); | |
172 | ||
173 | return fotg210_config_ep(ep, desc); | |
174 | } | |
175 | ||
176 | static void fotg210_reset_tseq(struct fotg210_udc *fotg210, u8 epnum) | |
177 | { | |
178 | struct fotg210_ep *ep = fotg210->ep[epnum]; | |
179 | u32 value; | |
180 | void __iomem *reg; | |
181 | ||
182 | reg = (ep->dir_in) ? | |
183 | fotg210->reg + FOTG210_INEPMPSR(epnum) : | |
184 | fotg210->reg + FOTG210_OUTEPMPSR(epnum); | |
185 | ||
186 | /* Note: Driver needs to set and clear INOUTEPMPSR_RESET_TSEQ | |
187 | * bit. Controller wouldn't clear this bit. WTF!!! | |
188 | */ | |
189 | ||
190 | value = ioread32(reg); | |
191 | value |= INOUTEPMPSR_RESET_TSEQ; | |
192 | iowrite32(value, reg); | |
193 | ||
194 | value = ioread32(reg); | |
195 | value &= ~INOUTEPMPSR_RESET_TSEQ; | |
196 | iowrite32(value, reg); | |
197 | } | |
198 | ||
199 | static int fotg210_ep_release(struct fotg210_ep *ep) | |
200 | { | |
201 | if (!ep->epnum) | |
202 | return 0; | |
203 | ep->epnum = 0; | |
204 | ep->stall = 0; | |
205 | ep->wedged = 0; | |
206 | ||
207 | fotg210_reset_tseq(ep->fotg210, ep->epnum); | |
208 | ||
209 | return 0; | |
210 | } | |
211 | ||
212 | static int fotg210_ep_disable(struct usb_ep *_ep) | |
213 | { | |
214 | struct fotg210_ep *ep; | |
215 | struct fotg210_request *req; | |
216 | unsigned long flags; | |
217 | ||
218 | BUG_ON(!_ep); | |
219 | ||
220 | ep = container_of(_ep, struct fotg210_ep, ep); | |
221 | ||
222 | while (!list_empty(&ep->queue)) { | |
223 | req = list_entry(ep->queue.next, | |
224 | struct fotg210_request, queue); | |
225 | spin_lock_irqsave(&ep->fotg210->lock, flags); | |
226 | fotg210_done(ep, req, -ECONNRESET); | |
227 | spin_unlock_irqrestore(&ep->fotg210->lock, flags); | |
228 | } | |
229 | ||
230 | return fotg210_ep_release(ep); | |
231 | } | |
232 | ||
233 | static struct usb_request *fotg210_ep_alloc_request(struct usb_ep *_ep, | |
234 | gfp_t gfp_flags) | |
235 | { | |
236 | struct fotg210_request *req; | |
237 | ||
238 | req = kzalloc(sizeof(struct fotg210_request), gfp_flags); | |
239 | if (!req) | |
240 | return NULL; | |
241 | ||
242 | INIT_LIST_HEAD(&req->queue); | |
243 | ||
244 | return &req->req; | |
245 | } | |
246 | ||
247 | static void fotg210_ep_free_request(struct usb_ep *_ep, | |
248 | struct usb_request *_req) | |
249 | { | |
250 | struct fotg210_request *req; | |
251 | ||
252 | req = container_of(_req, struct fotg210_request, req); | |
253 | kfree(req); | |
254 | } | |
255 | ||
256 | static void fotg210_enable_dma(struct fotg210_ep *ep, | |
257 | dma_addr_t d, u32 len) | |
258 | { | |
259 | u32 value; | |
260 | struct fotg210_udc *fotg210 = ep->fotg210; | |
261 | ||
262 | /* set transfer length and direction */ | |
263 | value = ioread32(fotg210->reg + FOTG210_DMACPSR1); | |
264 | value &= ~(DMACPSR1_DMA_LEN(0xFFFF) | DMACPSR1_DMA_TYPE(1)); | |
265 | value |= DMACPSR1_DMA_LEN(len) | DMACPSR1_DMA_TYPE(ep->dir_in); | |
266 | iowrite32(value, fotg210->reg + FOTG210_DMACPSR1); | |
267 | ||
268 | /* set device DMA target FIFO number */ | |
269 | value = ioread32(fotg210->reg + FOTG210_DMATFNR); | |
270 | if (ep->epnum) | |
271 | value |= DMATFNR_ACC_FN(ep->epnum - 1); | |
272 | else | |
273 | value |= DMATFNR_ACC_CXF; | |
274 | iowrite32(value, fotg210->reg + FOTG210_DMATFNR); | |
275 | ||
276 | /* set DMA memory address */ | |
277 | iowrite32(d, fotg210->reg + FOTG210_DMACPSR2); | |
278 | ||
279 | /* enable MDMA_EROR and MDMA_CMPLT interrupt */ | |
280 | value = ioread32(fotg210->reg + FOTG210_DMISGR2); | |
281 | value &= ~(DMISGR2_MDMA_CMPLT | DMISGR2_MDMA_ERROR); | |
282 | iowrite32(value, fotg210->reg + FOTG210_DMISGR2); | |
283 | ||
284 | /* start DMA */ | |
285 | value = ioread32(fotg210->reg + FOTG210_DMACPSR1); | |
286 | value |= DMACPSR1_DMA_START; | |
287 | iowrite32(value, fotg210->reg + FOTG210_DMACPSR1); | |
288 | } | |
289 | ||
290 | static void fotg210_disable_dma(struct fotg210_ep *ep) | |
291 | { | |
292 | iowrite32(DMATFNR_DISDMA, ep->fotg210->reg + FOTG210_DMATFNR); | |
293 | } | |
294 | ||
295 | static void fotg210_wait_dma_done(struct fotg210_ep *ep) | |
296 | { | |
297 | u32 value; | |
298 | ||
299 | do { | |
300 | value = ioread32(ep->fotg210->reg + FOTG210_DISGR2); | |
301 | if ((value & DISGR2_USBRST_INT) || | |
302 | (value & DISGR2_DMA_ERROR)) | |
303 | goto dma_reset; | |
304 | } while (!(value & DISGR2_DMA_CMPLT)); | |
305 | ||
306 | value &= ~DISGR2_DMA_CMPLT; | |
307 | iowrite32(value, ep->fotg210->reg + FOTG210_DISGR2); | |
308 | return; | |
309 | ||
310 | dma_reset: | |
311 | value = ioread32(ep->fotg210->reg + FOTG210_DMACPSR1); | |
312 | value |= DMACPSR1_DMA_ABORT; | |
313 | iowrite32(value, ep->fotg210->reg + FOTG210_DMACPSR1); | |
314 | ||
315 | /* reset fifo */ | |
316 | if (ep->epnum) { | |
317 | value = ioread32(ep->fotg210->reg + | |
318 | FOTG210_FIBCR(ep->epnum - 1)); | |
319 | value |= FIBCR_FFRST; | |
320 | iowrite32(value, ep->fotg210->reg + | |
321 | FOTG210_FIBCR(ep->epnum - 1)); | |
322 | } else { | |
323 | value = ioread32(ep->fotg210->reg + FOTG210_DCFESR); | |
324 | value |= DCFESR_CX_CLR; | |
325 | iowrite32(value, ep->fotg210->reg + FOTG210_DCFESR); | |
326 | } | |
327 | } | |
328 | ||
329 | static void fotg210_start_dma(struct fotg210_ep *ep, | |
330 | struct fotg210_request *req) | |
331 | { | |
332 | dma_addr_t d; | |
333 | u8 *buffer; | |
334 | u32 length; | |
335 | ||
336 | if (ep->epnum) { | |
337 | if (ep->dir_in) { | |
338 | buffer = req->req.buf; | |
339 | length = req->req.length; | |
340 | } else { | |
341 | buffer = req->req.buf + req->req.actual; | |
342 | length = ioread32(ep->fotg210->reg + | |
343 | FOTG210_FIBCR(ep->epnum - 1)); | |
344 | length &= FIBCR_BCFX; | |
345 | } | |
346 | } else { | |
347 | buffer = req->req.buf + req->req.actual; | |
348 | if (req->req.length - req->req.actual > ep->ep.maxpacket) | |
349 | length = ep->ep.maxpacket; | |
350 | else | |
351 | length = req->req.length; | |
352 | } | |
353 | ||
354 | d = dma_map_single(NULL, buffer, length, | |
355 | ep->dir_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE); | |
356 | ||
357 | if (dma_mapping_error(NULL, d)) { | |
358 | pr_err("dma_mapping_error\n"); | |
359 | return; | |
360 | } | |
361 | ||
362 | dma_sync_single_for_device(NULL, d, length, | |
363 | ep->dir_in ? DMA_TO_DEVICE : | |
364 | DMA_FROM_DEVICE); | |
365 | ||
366 | fotg210_enable_dma(ep, d, length); | |
367 | ||
368 | /* check if dma is done */ | |
369 | fotg210_wait_dma_done(ep); | |
370 | ||
371 | fotg210_disable_dma(ep); | |
372 | ||
373 | /* update actual transfer length */ | |
374 | req->req.actual += length; | |
375 | ||
376 | dma_unmap_single(NULL, d, length, DMA_TO_DEVICE); | |
377 | } | |
378 | ||
379 | static void fotg210_ep0_queue(struct fotg210_ep *ep, | |
380 | struct fotg210_request *req) | |
381 | { | |
382 | if (!req->req.length) { | |
383 | fotg210_done(ep, req, 0); | |
384 | return; | |
385 | } | |
386 | if (ep->dir_in) { /* if IN */ | |
387 | if (req->req.length) { | |
388 | fotg210_start_dma(ep, req); | |
389 | } else { | |
390 | pr_err("%s : req->req.length = 0x%x\n", | |
391 | __func__, req->req.length); | |
392 | } | |
393 | if ((req->req.length == req->req.actual) || | |
394 | (req->req.actual < ep->ep.maxpacket)) | |
395 | fotg210_done(ep, req, 0); | |
396 | } else { /* OUT */ | |
397 | if (!req->req.length) { | |
398 | fotg210_done(ep, req, 0); | |
399 | } else { | |
400 | u32 value = ioread32(ep->fotg210->reg + | |
401 | FOTG210_DMISGR0); | |
402 | ||
403 | value &= ~DMISGR0_MCX_OUT_INT; | |
404 | iowrite32(value, ep->fotg210->reg + FOTG210_DMISGR0); | |
405 | } | |
406 | } | |
407 | } | |
408 | ||
409 | static int fotg210_ep_queue(struct usb_ep *_ep, struct usb_request *_req, | |
410 | gfp_t gfp_flags) | |
411 | { | |
412 | struct fotg210_ep *ep; | |
413 | struct fotg210_request *req; | |
414 | unsigned long flags; | |
415 | int request = 0; | |
416 | ||
417 | ep = container_of(_ep, struct fotg210_ep, ep); | |
418 | req = container_of(_req, struct fotg210_request, req); | |
419 | ||
420 | if (ep->fotg210->gadget.speed == USB_SPEED_UNKNOWN) | |
421 | return -ESHUTDOWN; | |
422 | ||
423 | spin_lock_irqsave(&ep->fotg210->lock, flags); | |
424 | ||
425 | if (list_empty(&ep->queue)) | |
426 | request = 1; | |
427 | ||
428 | list_add_tail(&req->queue, &ep->queue); | |
429 | ||
430 | req->req.actual = 0; | |
431 | req->req.status = -EINPROGRESS; | |
432 | ||
433 | if (!ep->epnum) /* ep0 */ | |
434 | fotg210_ep0_queue(ep, req); | |
435 | else if (request && !ep->stall) | |
436 | fotg210_enable_fifo_int(ep); | |
437 | ||
438 | spin_unlock_irqrestore(&ep->fotg210->lock, flags); | |
439 | ||
440 | return 0; | |
441 | } | |
442 | ||
443 | static int fotg210_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req) | |
444 | { | |
445 | struct fotg210_ep *ep; | |
446 | struct fotg210_request *req; | |
447 | unsigned long flags; | |
448 | ||
449 | ep = container_of(_ep, struct fotg210_ep, ep); | |
450 | req = container_of(_req, struct fotg210_request, req); | |
451 | ||
452 | spin_lock_irqsave(&ep->fotg210->lock, flags); | |
453 | if (!list_empty(&ep->queue)) | |
454 | fotg210_done(ep, req, -ECONNRESET); | |
455 | spin_unlock_irqrestore(&ep->fotg210->lock, flags); | |
456 | ||
457 | return 0; | |
458 | } | |
459 | ||
460 | static void fotg210_set_epnstall(struct fotg210_ep *ep) | |
461 | { | |
462 | struct fotg210_udc *fotg210 = ep->fotg210; | |
463 | u32 value; | |
464 | void __iomem *reg; | |
465 | ||
466 | /* check if IN FIFO is empty before stall */ | |
467 | if (ep->dir_in) { | |
468 | do { | |
469 | value = ioread32(fotg210->reg + FOTG210_DCFESR); | |
470 | } while (!(value & DCFESR_FIFO_EMPTY(ep->epnum - 1))); | |
471 | } | |
472 | ||
473 | reg = (ep->dir_in) ? | |
474 | fotg210->reg + FOTG210_INEPMPSR(ep->epnum) : | |
475 | fotg210->reg + FOTG210_OUTEPMPSR(ep->epnum); | |
476 | value = ioread32(reg); | |
477 | value |= INOUTEPMPSR_STL_EP; | |
478 | iowrite32(value, reg); | |
479 | } | |
480 | ||
481 | static void fotg210_clear_epnstall(struct fotg210_ep *ep) | |
482 | { | |
483 | struct fotg210_udc *fotg210 = ep->fotg210; | |
484 | u32 value; | |
485 | void __iomem *reg; | |
486 | ||
487 | reg = (ep->dir_in) ? | |
488 | fotg210->reg + FOTG210_INEPMPSR(ep->epnum) : | |
489 | fotg210->reg + FOTG210_OUTEPMPSR(ep->epnum); | |
490 | value = ioread32(reg); | |
491 | value &= ~INOUTEPMPSR_STL_EP; | |
492 | iowrite32(value, reg); | |
493 | } | |
494 | ||
495 | static int fotg210_set_halt_and_wedge(struct usb_ep *_ep, int value, int wedge) | |
496 | { | |
497 | struct fotg210_ep *ep; | |
498 | struct fotg210_udc *fotg210; | |
499 | unsigned long flags; | |
500 | int ret = 0; | |
501 | ||
502 | ep = container_of(_ep, struct fotg210_ep, ep); | |
503 | ||
504 | fotg210 = ep->fotg210; | |
505 | ||
506 | spin_lock_irqsave(&ep->fotg210->lock, flags); | |
507 | ||
508 | if (value) { | |
509 | fotg210_set_epnstall(ep); | |
510 | ep->stall = 1; | |
511 | if (wedge) | |
512 | ep->wedged = 1; | |
513 | } else { | |
514 | fotg210_reset_tseq(fotg210, ep->epnum); | |
515 | fotg210_clear_epnstall(ep); | |
516 | ep->stall = 0; | |
517 | ep->wedged = 0; | |
518 | if (!list_empty(&ep->queue)) | |
519 | fotg210_enable_fifo_int(ep); | |
520 | } | |
521 | ||
522 | spin_unlock_irqrestore(&ep->fotg210->lock, flags); | |
523 | return ret; | |
524 | } | |
525 | ||
526 | static int fotg210_ep_set_halt(struct usb_ep *_ep, int value) | |
527 | { | |
528 | return fotg210_set_halt_and_wedge(_ep, value, 0); | |
529 | } | |
530 | ||
531 | static int fotg210_ep_set_wedge(struct usb_ep *_ep) | |
532 | { | |
533 | return fotg210_set_halt_and_wedge(_ep, 1, 1); | |
534 | } | |
535 | ||
536 | static void fotg210_ep_fifo_flush(struct usb_ep *_ep) | |
537 | { | |
538 | } | |
539 | ||
540 | static struct usb_ep_ops fotg210_ep_ops = { | |
541 | .enable = fotg210_ep_enable, | |
542 | .disable = fotg210_ep_disable, | |
543 | ||
544 | .alloc_request = fotg210_ep_alloc_request, | |
545 | .free_request = fotg210_ep_free_request, | |
546 | ||
547 | .queue = fotg210_ep_queue, | |
548 | .dequeue = fotg210_ep_dequeue, | |
549 | ||
550 | .set_halt = fotg210_ep_set_halt, | |
551 | .fifo_flush = fotg210_ep_fifo_flush, | |
552 | .set_wedge = fotg210_ep_set_wedge, | |
553 | }; | |
554 | ||
555 | static void fotg210_clear_tx0byte(struct fotg210_udc *fotg210) | |
556 | { | |
557 | u32 value = ioread32(fotg210->reg + FOTG210_TX0BYTE); | |
558 | ||
559 | value &= ~(TX0BYTE_EP1 | TX0BYTE_EP2 | TX0BYTE_EP3 | |
560 | | TX0BYTE_EP4); | |
561 | iowrite32(value, fotg210->reg + FOTG210_TX0BYTE); | |
562 | } | |
563 | ||
564 | static void fotg210_clear_rx0byte(struct fotg210_udc *fotg210) | |
565 | { | |
566 | u32 value = ioread32(fotg210->reg + FOTG210_RX0BYTE); | |
567 | ||
568 | value &= ~(RX0BYTE_EP1 | RX0BYTE_EP2 | RX0BYTE_EP3 | |
569 | | RX0BYTE_EP4); | |
570 | iowrite32(value, fotg210->reg + FOTG210_RX0BYTE); | |
571 | } | |
572 | ||
573 | /* read 8-byte setup packet only */ | |
574 | static void fotg210_rdsetupp(struct fotg210_udc *fotg210, | |
575 | u8 *buffer) | |
576 | { | |
577 | int i = 0; | |
578 | u8 *tmp = buffer; | |
579 | u32 data; | |
580 | u32 length = 8; | |
581 | ||
582 | iowrite32(DMATFNR_ACC_CXF, fotg210->reg + FOTG210_DMATFNR); | |
583 | ||
584 | for (i = (length >> 2); i > 0; i--) { | |
585 | data = ioread32(fotg210->reg + FOTG210_CXPORT); | |
586 | *tmp = data & 0xFF; | |
587 | *(tmp + 1) = (data >> 8) & 0xFF; | |
588 | *(tmp + 2) = (data >> 16) & 0xFF; | |
589 | *(tmp + 3) = (data >> 24) & 0xFF; | |
590 | tmp = tmp + 4; | |
591 | } | |
592 | ||
593 | switch (length % 4) { | |
594 | case 1: | |
595 | data = ioread32(fotg210->reg + FOTG210_CXPORT); | |
596 | *tmp = data & 0xFF; | |
597 | break; | |
598 | case 2: | |
599 | data = ioread32(fotg210->reg + FOTG210_CXPORT); | |
600 | *tmp = data & 0xFF; | |
601 | *(tmp + 1) = (data >> 8) & 0xFF; | |
602 | break; | |
603 | case 3: | |
604 | data = ioread32(fotg210->reg + FOTG210_CXPORT); | |
605 | *tmp = data & 0xFF; | |
606 | *(tmp + 1) = (data >> 8) & 0xFF; | |
607 | *(tmp + 2) = (data >> 16) & 0xFF; | |
608 | break; | |
609 | default: | |
610 | break; | |
611 | } | |
612 | ||
613 | iowrite32(DMATFNR_DISDMA, fotg210->reg + FOTG210_DMATFNR); | |
614 | } | |
615 | ||
616 | static void fotg210_set_configuration(struct fotg210_udc *fotg210) | |
617 | { | |
618 | u32 value = ioread32(fotg210->reg + FOTG210_DAR); | |
619 | ||
620 | value |= DAR_AFT_CONF; | |
621 | iowrite32(value, fotg210->reg + FOTG210_DAR); | |
622 | } | |
623 | ||
624 | static void fotg210_set_dev_addr(struct fotg210_udc *fotg210, u32 addr) | |
625 | { | |
626 | u32 value = ioread32(fotg210->reg + FOTG210_DAR); | |
627 | ||
628 | value |= (addr & 0x7F); | |
629 | iowrite32(value, fotg210->reg + FOTG210_DAR); | |
630 | } | |
631 | ||
632 | static void fotg210_set_cxstall(struct fotg210_udc *fotg210) | |
633 | { | |
634 | u32 value = ioread32(fotg210->reg + FOTG210_DCFESR); | |
635 | ||
636 | value |= DCFESR_CX_STL; | |
637 | iowrite32(value, fotg210->reg + FOTG210_DCFESR); | |
638 | } | |
639 | ||
640 | static void fotg210_request_error(struct fotg210_udc *fotg210) | |
641 | { | |
642 | fotg210_set_cxstall(fotg210); | |
643 | pr_err("request error!!\n"); | |
644 | } | |
645 | ||
646 | static void fotg210_set_address(struct fotg210_udc *fotg210, | |
647 | struct usb_ctrlrequest *ctrl) | |
648 | { | |
649 | if (ctrl->wValue >= 0x0100) { | |
650 | fotg210_request_error(fotg210); | |
651 | } else { | |
652 | fotg210_set_dev_addr(fotg210, ctrl->wValue); | |
653 | fotg210_set_cxdone(fotg210); | |
654 | } | |
655 | } | |
656 | ||
657 | static void fotg210_set_feature(struct fotg210_udc *fotg210, | |
658 | struct usb_ctrlrequest *ctrl) | |
659 | { | |
660 | switch (ctrl->bRequestType & USB_RECIP_MASK) { | |
661 | case USB_RECIP_DEVICE: | |
662 | fotg210_set_cxdone(fotg210); | |
663 | break; | |
664 | case USB_RECIP_INTERFACE: | |
665 | fotg210_set_cxdone(fotg210); | |
666 | break; | |
667 | case USB_RECIP_ENDPOINT: { | |
668 | u8 epnum; | |
669 | epnum = le16_to_cpu(ctrl->wIndex) & USB_ENDPOINT_NUMBER_MASK; | |
670 | if (epnum) | |
671 | fotg210_set_epnstall(fotg210->ep[epnum]); | |
672 | else | |
673 | fotg210_set_cxstall(fotg210); | |
674 | fotg210_set_cxdone(fotg210); | |
675 | } | |
676 | break; | |
677 | default: | |
678 | fotg210_request_error(fotg210); | |
679 | break; | |
680 | } | |
681 | } | |
682 | ||
683 | static void fotg210_clear_feature(struct fotg210_udc *fotg210, | |
684 | struct usb_ctrlrequest *ctrl) | |
685 | { | |
686 | struct fotg210_ep *ep = | |
687 | fotg210->ep[ctrl->wIndex & USB_ENDPOINT_NUMBER_MASK]; | |
688 | ||
689 | switch (ctrl->bRequestType & USB_RECIP_MASK) { | |
690 | case USB_RECIP_DEVICE: | |
691 | fotg210_set_cxdone(fotg210); | |
692 | break; | |
693 | case USB_RECIP_INTERFACE: | |
694 | fotg210_set_cxdone(fotg210); | |
695 | break; | |
696 | case USB_RECIP_ENDPOINT: | |
697 | if (ctrl->wIndex & USB_ENDPOINT_NUMBER_MASK) { | |
698 | if (ep->wedged) { | |
699 | fotg210_set_cxdone(fotg210); | |
700 | break; | |
701 | } | |
702 | if (ep->stall) | |
703 | fotg210_set_halt_and_wedge(&ep->ep, 0, 0); | |
704 | } | |
705 | fotg210_set_cxdone(fotg210); | |
706 | break; | |
707 | default: | |
708 | fotg210_request_error(fotg210); | |
709 | break; | |
710 | } | |
711 | } | |
712 | ||
713 | static int fotg210_is_epnstall(struct fotg210_ep *ep) | |
714 | { | |
715 | struct fotg210_udc *fotg210 = ep->fotg210; | |
716 | u32 value; | |
717 | void __iomem *reg; | |
718 | ||
719 | reg = (ep->dir_in) ? | |
720 | fotg210->reg + FOTG210_INEPMPSR(ep->epnum) : | |
721 | fotg210->reg + FOTG210_OUTEPMPSR(ep->epnum); | |
722 | value = ioread32(reg); | |
723 | return value & INOUTEPMPSR_STL_EP ? 1 : 0; | |
724 | } | |
725 | ||
726 | static void fotg210_get_status(struct fotg210_udc *fotg210, | |
727 | struct usb_ctrlrequest *ctrl) | |
728 | { | |
729 | u8 epnum; | |
730 | ||
731 | switch (ctrl->bRequestType & USB_RECIP_MASK) { | |
732 | case USB_RECIP_DEVICE: | |
733 | fotg210->ep0_data = 1 << USB_DEVICE_SELF_POWERED; | |
734 | break; | |
735 | case USB_RECIP_INTERFACE: | |
736 | fotg210->ep0_data = 0; | |
737 | break; | |
738 | case USB_RECIP_ENDPOINT: | |
739 | epnum = ctrl->wIndex & USB_ENDPOINT_NUMBER_MASK; | |
740 | if (epnum) | |
741 | fotg210->ep0_data = | |
742 | fotg210_is_epnstall(fotg210->ep[epnum]) | |
743 | << USB_ENDPOINT_HALT; | |
744 | else | |
745 | fotg210_request_error(fotg210); | |
746 | break; | |
747 | ||
748 | default: | |
749 | fotg210_request_error(fotg210); | |
750 | return; /* exit */ | |
751 | } | |
752 | ||
753 | fotg210->ep0_req->buf = &fotg210->ep0_data; | |
754 | fotg210->ep0_req->length = 2; | |
755 | ||
756 | spin_unlock(&fotg210->lock); | |
757 | fotg210_ep_queue(fotg210->gadget.ep0, fotg210->ep0_req, GFP_KERNEL); | |
758 | spin_lock(&fotg210->lock); | |
759 | } | |
760 | ||
761 | static int fotg210_setup_packet(struct fotg210_udc *fotg210, | |
762 | struct usb_ctrlrequest *ctrl) | |
763 | { | |
764 | u8 *p = (u8 *)ctrl; | |
765 | u8 ret = 0; | |
766 | ||
767 | fotg210_rdsetupp(fotg210, p); | |
768 | ||
769 | fotg210->ep[0]->dir_in = ctrl->bRequestType & USB_DIR_IN; | |
770 | ||
771 | if (fotg210->gadget.speed == USB_SPEED_UNKNOWN) { | |
772 | u32 value = ioread32(fotg210->reg + FOTG210_DMCR); | |
773 | fotg210->gadget.speed = value & DMCR_HS_EN ? | |
774 | USB_SPEED_HIGH : USB_SPEED_FULL; | |
775 | } | |
776 | ||
777 | /* check request */ | |
778 | if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) { | |
779 | switch (ctrl->bRequest) { | |
780 | case USB_REQ_GET_STATUS: | |
781 | fotg210_get_status(fotg210, ctrl); | |
782 | break; | |
783 | case USB_REQ_CLEAR_FEATURE: | |
784 | fotg210_clear_feature(fotg210, ctrl); | |
785 | break; | |
786 | case USB_REQ_SET_FEATURE: | |
787 | fotg210_set_feature(fotg210, ctrl); | |
788 | break; | |
789 | case USB_REQ_SET_ADDRESS: | |
790 | fotg210_set_address(fotg210, ctrl); | |
791 | break; | |
792 | case USB_REQ_SET_CONFIGURATION: | |
793 | fotg210_set_configuration(fotg210); | |
794 | ret = 1; | |
795 | break; | |
796 | default: | |
797 | ret = 1; | |
798 | break; | |
799 | } | |
800 | } else { | |
801 | ret = 1; | |
802 | } | |
803 | ||
804 | return ret; | |
805 | } | |
806 | ||
807 | static void fotg210_ep0out(struct fotg210_udc *fotg210) | |
808 | { | |
809 | struct fotg210_ep *ep = fotg210->ep[0]; | |
810 | ||
811 | if (!list_empty(&ep->queue) && !ep->dir_in) { | |
812 | struct fotg210_request *req; | |
813 | ||
814 | req = list_first_entry(&ep->queue, | |
815 | struct fotg210_request, queue); | |
816 | ||
817 | if (req->req.length) | |
818 | fotg210_start_dma(ep, req); | |
819 | ||
820 | if ((req->req.length - req->req.actual) < ep->ep.maxpacket) | |
821 | fotg210_done(ep, req, 0); | |
822 | } else { | |
823 | pr_err("%s : empty queue\n", __func__); | |
824 | } | |
825 | } | |
826 | ||
827 | static void fotg210_ep0in(struct fotg210_udc *fotg210) | |
828 | { | |
829 | struct fotg210_ep *ep = fotg210->ep[0]; | |
830 | ||
831 | if ((!list_empty(&ep->queue)) && (ep->dir_in)) { | |
832 | struct fotg210_request *req; | |
833 | ||
834 | req = list_entry(ep->queue.next, | |
835 | struct fotg210_request, queue); | |
836 | ||
837 | if (req->req.length) | |
838 | fotg210_start_dma(ep, req); | |
839 | ||
840 | if ((req->req.length - req->req.actual) < ep->ep.maxpacket) | |
841 | fotg210_done(ep, req, 0); | |
842 | } else { | |
843 | fotg210_set_cxdone(fotg210); | |
844 | } | |
845 | } | |
846 | ||
847 | static void fotg210_clear_comabt_int(struct fotg210_udc *fotg210) | |
848 | { | |
849 | u32 value = ioread32(fotg210->reg + FOTG210_DISGR0); | |
850 | ||
851 | value &= ~DISGR0_CX_COMABT_INT; | |
852 | iowrite32(value, fotg210->reg + FOTG210_DISGR0); | |
853 | } | |
854 | ||
855 | static void fotg210_in_fifo_handler(struct fotg210_ep *ep) | |
856 | { | |
857 | struct fotg210_request *req = list_entry(ep->queue.next, | |
858 | struct fotg210_request, queue); | |
859 | ||
860 | if (req->req.length) | |
861 | fotg210_start_dma(ep, req); | |
862 | fotg210_done(ep, req, 0); | |
863 | } | |
864 | ||
865 | static void fotg210_out_fifo_handler(struct fotg210_ep *ep) | |
866 | { | |
867 | struct fotg210_request *req = list_entry(ep->queue.next, | |
868 | struct fotg210_request, queue); | |
869 | ||
870 | fotg210_start_dma(ep, req); | |
871 | ||
872 | /* finish out transfer */ | |
873 | if (req->req.length == req->req.actual || | |
874 | req->req.actual < ep->ep.maxpacket) | |
875 | fotg210_done(ep, req, 0); | |
876 | } | |
877 | ||
878 | static irqreturn_t fotg210_irq(int irq, void *_fotg210) | |
879 | { | |
880 | struct fotg210_udc *fotg210 = _fotg210; | |
881 | u32 int_grp = ioread32(fotg210->reg + FOTG210_DIGR); | |
882 | u32 int_msk = ioread32(fotg210->reg + FOTG210_DMIGR); | |
883 | ||
884 | int_grp &= ~int_msk; | |
885 | ||
886 | spin_lock(&fotg210->lock); | |
887 | ||
888 | if (int_grp & DIGR_INT_G2) { | |
889 | void __iomem *reg = fotg210->reg + FOTG210_DISGR2; | |
890 | u32 int_grp2 = ioread32(reg); | |
891 | u32 int_msk2 = ioread32(fotg210->reg + FOTG210_DMISGR2); | |
892 | u32 value; | |
893 | ||
894 | int_grp2 &= ~int_msk2; | |
895 | ||
896 | if (int_grp2 & DISGR2_USBRST_INT) { | |
897 | value = ioread32(reg); | |
898 | value &= ~DISGR2_USBRST_INT; | |
899 | iowrite32(value, reg); | |
900 | pr_info("fotg210 udc reset\n"); | |
901 | } | |
902 | if (int_grp2 & DISGR2_SUSP_INT) { | |
903 | value = ioread32(reg); | |
904 | value &= ~DISGR2_SUSP_INT; | |
905 | iowrite32(value, reg); | |
906 | pr_info("fotg210 udc suspend\n"); | |
907 | } | |
908 | if (int_grp2 & DISGR2_RESM_INT) { | |
909 | value = ioread32(reg); | |
910 | value &= ~DISGR2_RESM_INT; | |
911 | iowrite32(value, reg); | |
912 | pr_info("fotg210 udc resume\n"); | |
913 | } | |
914 | if (int_grp2 & DISGR2_ISO_SEQ_ERR_INT) { | |
915 | value = ioread32(reg); | |
916 | value &= ~DISGR2_ISO_SEQ_ERR_INT; | |
917 | iowrite32(value, reg); | |
918 | pr_info("fotg210 iso sequence error\n"); | |
919 | } | |
920 | if (int_grp2 & DISGR2_ISO_SEQ_ABORT_INT) { | |
921 | value = ioread32(reg); | |
922 | value &= ~DISGR2_ISO_SEQ_ABORT_INT; | |
923 | iowrite32(value, reg); | |
924 | pr_info("fotg210 iso sequence abort\n"); | |
925 | } | |
926 | if (int_grp2 & DISGR2_TX0BYTE_INT) { | |
927 | fotg210_clear_tx0byte(fotg210); | |
928 | value = ioread32(reg); | |
929 | value &= ~DISGR2_TX0BYTE_INT; | |
930 | iowrite32(value, reg); | |
931 | pr_info("fotg210 transferred 0 byte\n"); | |
932 | } | |
933 | if (int_grp2 & DISGR2_RX0BYTE_INT) { | |
934 | fotg210_clear_rx0byte(fotg210); | |
935 | value = ioread32(reg); | |
936 | value &= ~DISGR2_RX0BYTE_INT; | |
937 | iowrite32(value, reg); | |
938 | pr_info("fotg210 received 0 byte\n"); | |
939 | } | |
940 | if (int_grp2 & DISGR2_DMA_ERROR) { | |
941 | value = ioread32(reg); | |
942 | value &= ~DISGR2_DMA_ERROR; | |
943 | iowrite32(value, reg); | |
944 | } | |
945 | } | |
946 | ||
947 | if (int_grp & DIGR_INT_G0) { | |
948 | void __iomem *reg = fotg210->reg + FOTG210_DISGR0; | |
949 | u32 int_grp0 = ioread32(reg); | |
950 | u32 int_msk0 = ioread32(fotg210->reg + FOTG210_DMISGR0); | |
951 | struct usb_ctrlrequest ctrl; | |
952 | ||
953 | int_grp0 &= ~int_msk0; | |
954 | ||
955 | /* the highest priority in this source register */ | |
956 | if (int_grp0 & DISGR0_CX_COMABT_INT) { | |
957 | fotg210_clear_comabt_int(fotg210); | |
958 | pr_info("fotg210 CX command abort\n"); | |
959 | } | |
960 | ||
961 | if (int_grp0 & DISGR0_CX_SETUP_INT) { | |
962 | if (fotg210_setup_packet(fotg210, &ctrl)) { | |
963 | spin_unlock(&fotg210->lock); | |
964 | if (fotg210->driver->setup(&fotg210->gadget, | |
965 | &ctrl) < 0) | |
966 | fotg210_set_cxstall(fotg210); | |
967 | spin_lock(&fotg210->lock); | |
968 | } | |
969 | } | |
970 | if (int_grp0 & DISGR0_CX_COMEND_INT) | |
971 | pr_info("fotg210 cmd end\n"); | |
972 | ||
973 | if (int_grp0 & DISGR0_CX_IN_INT) | |
974 | fotg210_ep0in(fotg210); | |
975 | ||
976 | if (int_grp0 & DISGR0_CX_OUT_INT) | |
977 | fotg210_ep0out(fotg210); | |
978 | ||
979 | if (int_grp0 & DISGR0_CX_COMFAIL_INT) { | |
980 | fotg210_set_cxstall(fotg210); | |
981 | pr_info("fotg210 ep0 fail\n"); | |
982 | } | |
983 | } | |
984 | ||
985 | if (int_grp & DIGR_INT_G1) { | |
986 | void __iomem *reg = fotg210->reg + FOTG210_DISGR1; | |
987 | u32 int_grp1 = ioread32(reg); | |
988 | u32 int_msk1 = ioread32(fotg210->reg + FOTG210_DMISGR1); | |
989 | int fifo; | |
990 | ||
991 | int_grp1 &= ~int_msk1; | |
992 | ||
993 | for (fifo = 0; fifo < FOTG210_MAX_FIFO_NUM; fifo++) { | |
994 | if (int_grp1 & DISGR1_IN_INT(fifo)) | |
995 | fotg210_in_fifo_handler(fotg210->ep[fifo + 1]); | |
996 | ||
997 | if ((int_grp1 & DISGR1_OUT_INT(fifo)) || | |
998 | (int_grp1 & DISGR1_SPK_INT(fifo))) | |
999 | fotg210_out_fifo_handler(fotg210->ep[fifo + 1]); | |
1000 | } | |
1001 | } | |
1002 | ||
1003 | spin_unlock(&fotg210->lock); | |
1004 | ||
1005 | return IRQ_HANDLED; | |
1006 | } | |
1007 | ||
1008 | static void fotg210_disable_unplug(struct fotg210_udc *fotg210) | |
1009 | { | |
1010 | u32 reg = ioread32(fotg210->reg + FOTG210_PHYTMSR); | |
1011 | ||
1012 | reg &= ~PHYTMSR_UNPLUG; | |
1013 | iowrite32(reg, fotg210->reg + FOTG210_PHYTMSR); | |
1014 | } | |
1015 | ||
1016 | static int fotg210_udc_start(struct usb_gadget *g, | |
1017 | struct usb_gadget_driver *driver) | |
1018 | { | |
1019 | struct fotg210_udc *fotg210 = gadget_to_fotg210(g); | |
1020 | u32 value; | |
1021 | ||
1022 | /* hook up the driver */ | |
1023 | driver->driver.bus = NULL; | |
1024 | fotg210->driver = driver; | |
1025 | ||
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 | ||
1034 | static 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 | ||
1047 | /* disable all fifo interrupt */ | |
1048 | iowrite32(~(u32)0, fotg210->reg + FOTG210_DMISGR1); | |
1049 | ||
1050 | /* disable cmd end */ | |
1051 | value = ioread32(fotg210->reg + FOTG210_DMISGR0); | |
1052 | value |= DMISGR0_MCX_COMEND; | |
1053 | iowrite32(value, fotg210->reg + FOTG210_DMISGR0); | |
1054 | } | |
1055 | ||
1056 | static int fotg210_udc_stop(struct usb_gadget *g, | |
1057 | struct usb_gadget_driver *driver) | |
1058 | { | |
1059 | struct fotg210_udc *fotg210 = gadget_to_fotg210(g); | |
1060 | unsigned long flags; | |
1061 | ||
1062 | spin_lock_irqsave(&fotg210->lock, flags); | |
1063 | ||
1064 | fotg210_init(fotg210); | |
1065 | fotg210->driver = NULL; | |
1066 | ||
1067 | spin_unlock_irqrestore(&fotg210->lock, flags); | |
1068 | ||
1069 | return 0; | |
1070 | } | |
1071 | ||
1072 | static struct usb_gadget_ops fotg210_gadget_ops = { | |
1073 | .udc_start = fotg210_udc_start, | |
1074 | .udc_stop = fotg210_udc_stop, | |
1075 | }; | |
1076 | ||
88ae7423 | 1077 | static int fotg210_udc_remove(struct platform_device *pdev) |
b84a8dee | 1078 | { |
3cb40a59 | 1079 | struct fotg210_udc *fotg210 = platform_get_drvdata(pdev); |
b84a8dee YHC |
1080 | |
1081 | usb_del_gadget_udc(&fotg210->gadget); | |
1082 | iounmap(fotg210->reg); | |
1083 | free_irq(platform_get_irq(pdev, 0), fotg210); | |
1084 | ||
1085 | fotg210_ep_free_request(&fotg210->ep[0]->ep, fotg210->ep0_req); | |
1086 | kfree(fotg210); | |
1087 | ||
1088 | return 0; | |
1089 | } | |
1090 | ||
88ae7423 | 1091 | static int fotg210_udc_probe(struct platform_device *pdev) |
b84a8dee YHC |
1092 | { |
1093 | struct resource *res, *ires; | |
1094 | struct fotg210_udc *fotg210 = NULL; | |
1095 | struct fotg210_ep *_ep[FOTG210_MAX_NUM_EP]; | |
1096 | int ret = 0; | |
1097 | int i; | |
1098 | ||
1099 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1100 | if (!res) { | |
1101 | pr_err("platform_get_resource error.\n"); | |
1102 | return -ENODEV; | |
1103 | } | |
1104 | ||
1105 | ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0); | |
1106 | if (!ires) { | |
1107 | pr_err("platform_get_resource IORESOURCE_IRQ error.\n"); | |
1108 | return -ENODEV; | |
1109 | } | |
1110 | ||
1111 | ret = -ENOMEM; | |
1112 | ||
1113 | /* initialize udc */ | |
1114 | fotg210 = kzalloc(sizeof(struct fotg210_udc), GFP_KERNEL); | |
0351c329 | 1115 | if (fotg210 == NULL) |
b84a8dee | 1116 | goto err_alloc; |
b84a8dee YHC |
1117 | |
1118 | for (i = 0; i < FOTG210_MAX_NUM_EP; i++) { | |
1119 | _ep[i] = kzalloc(sizeof(struct fotg210_ep), GFP_KERNEL); | |
0351c329 | 1120 | if (_ep[i] == NULL) |
b84a8dee | 1121 | goto err_alloc; |
b84a8dee YHC |
1122 | fotg210->ep[i] = _ep[i]; |
1123 | } | |
1124 | ||
1125 | fotg210->reg = ioremap(res->start, resource_size(res)); | |
1126 | if (fotg210->reg == NULL) { | |
1127 | pr_err("ioremap error.\n"); | |
1128 | goto err_map; | |
1129 | } | |
1130 | ||
1131 | spin_lock_init(&fotg210->lock); | |
1132 | ||
3cb40a59 | 1133 | platform_set_drvdata(pdev, fotg210); |
b84a8dee YHC |
1134 | |
1135 | fotg210->gadget.ops = &fotg210_gadget_ops; | |
1136 | ||
1137 | fotg210->gadget.max_speed = USB_SPEED_HIGH; | |
1138 | fotg210->gadget.dev.parent = &pdev->dev; | |
1139 | fotg210->gadget.dev.dma_mask = pdev->dev.dma_mask; | |
1140 | fotg210->gadget.name = udc_name; | |
1141 | ||
1142 | INIT_LIST_HEAD(&fotg210->gadget.ep_list); | |
1143 | ||
1144 | for (i = 0; i < FOTG210_MAX_NUM_EP; i++) { | |
1145 | struct fotg210_ep *ep = fotg210->ep[i]; | |
1146 | ||
1147 | if (i) { | |
1148 | INIT_LIST_HEAD(&fotg210->ep[i]->ep.ep_list); | |
1149 | list_add_tail(&fotg210->ep[i]->ep.ep_list, | |
1150 | &fotg210->gadget.ep_list); | |
1151 | } | |
1152 | ep->fotg210 = fotg210; | |
1153 | INIT_LIST_HEAD(&ep->queue); | |
1154 | ep->ep.name = fotg210_ep_name[i]; | |
1155 | ep->ep.ops = &fotg210_ep_ops; | |
e117e742 | 1156 | usb_ep_set_maxpacket_limit(&ep->ep, (unsigned short) ~0); |
b84a8dee | 1157 | } |
e117e742 | 1158 | usb_ep_set_maxpacket_limit(&fotg210->ep[0]->ep, 0x40); |
b84a8dee YHC |
1159 | fotg210->gadget.ep0 = &fotg210->ep[0]->ep; |
1160 | INIT_LIST_HEAD(&fotg210->gadget.ep0->ep_list); | |
1161 | ||
1162 | fotg210->ep0_req = fotg210_ep_alloc_request(&fotg210->ep[0]->ep, | |
1163 | GFP_KERNEL); | |
1164 | if (fotg210->ep0_req == NULL) | |
1165 | goto err_req; | |
1166 | ||
1167 | fotg210_init(fotg210); | |
1168 | ||
1169 | fotg210_disable_unplug(fotg210); | |
1170 | ||
1171 | ret = request_irq(ires->start, fotg210_irq, IRQF_SHARED, | |
1172 | udc_name, fotg210); | |
1173 | if (ret < 0) { | |
1174 | pr_err("request_irq error (%d)\n", ret); | |
1175 | goto err_irq; | |
1176 | } | |
1177 | ||
1178 | ret = usb_add_gadget_udc(&pdev->dev, &fotg210->gadget); | |
1179 | if (ret) | |
1180 | goto err_add_udc; | |
1181 | ||
1182 | dev_info(&pdev->dev, "version %s\n", DRIVER_VERSION); | |
1183 | ||
1184 | return 0; | |
1185 | ||
1186 | err_add_udc: | |
1187 | err_irq: | |
1188 | free_irq(ires->start, fotg210); | |
1189 | ||
1190 | err_req: | |
1191 | fotg210_ep_free_request(&fotg210->ep[0]->ep, fotg210->ep0_req); | |
1192 | ||
1193 | err_map: | |
1194 | if (fotg210->reg) | |
1195 | iounmap(fotg210->reg); | |
1196 | ||
1197 | err_alloc: | |
1198 | kfree(fotg210); | |
1199 | ||
1200 | return ret; | |
1201 | } | |
1202 | ||
1203 | static struct platform_driver fotg210_driver = { | |
1204 | .driver = { | |
1205 | .name = (char *)udc_name, | |
1206 | .owner = THIS_MODULE, | |
1207 | }, | |
1208 | .probe = fotg210_udc_probe, | |
1209 | .remove = fotg210_udc_remove, | |
1210 | }; | |
1211 | ||
1212 | module_platform_driver(fotg210_driver); | |
1213 | ||
dfe29020 | 1214 | MODULE_AUTHOR("Yuan-Hsin Chen, Feng-Hsin Chiang <john453@faraday-tech.com>"); |
b84a8dee YHC |
1215 | MODULE_LICENSE("GPL"); |
1216 | MODULE_DESCRIPTION(DRIVER_DESC); |