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c4144247 YS |
1 | /* |
2 | * R8A66597 UDC (USB gadget) | |
3 | * | |
4 | * Copyright (C) 2006-2009 Renesas Solutions Corp. | |
5 | * | |
6 | * Author : Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; version 2 of the License. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | * | |
21 | */ | |
22 | ||
23 | #include <linux/module.h> | |
24 | #include <linux/interrupt.h> | |
25 | #include <linux/delay.h> | |
26 | #include <linux/io.h> | |
27 | #include <linux/platform_device.h> | |
d2e27bdf | 28 | #include <linux/clk.h> |
c4144247 YS |
29 | |
30 | #include <linux/usb/ch9.h> | |
31 | #include <linux/usb/gadget.h> | |
32 | ||
33 | #include "r8a66597-udc.h" | |
34 | ||
35 | #define DRIVER_VERSION "2009-08-18" | |
36 | ||
37 | static const char udc_name[] = "r8a66597_udc"; | |
38 | static const char *r8a66597_ep_name[] = { | |
39 | "ep0", "ep1", "ep2", "ep3", "ep4", "ep5", "ep6", "ep7", | |
40 | "ep8", "ep9", | |
41 | }; | |
42 | ||
43 | static void disable_controller(struct r8a66597 *r8a66597); | |
44 | static void irq_ep0_write(struct r8a66597_ep *ep, struct r8a66597_request *req); | |
45 | static void irq_packet_write(struct r8a66597_ep *ep, | |
46 | struct r8a66597_request *req); | |
47 | static int r8a66597_queue(struct usb_ep *_ep, struct usb_request *_req, | |
48 | gfp_t gfp_flags); | |
49 | ||
50 | static void transfer_complete(struct r8a66597_ep *ep, | |
51 | struct r8a66597_request *req, int status); | |
52 | ||
53 | /*-------------------------------------------------------------------------*/ | |
54 | static inline u16 get_usb_speed(struct r8a66597 *r8a66597) | |
55 | { | |
56 | return r8a66597_read(r8a66597, DVSTCTR0) & RHST; | |
57 | } | |
58 | ||
59 | static void enable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum, | |
60 | unsigned long reg) | |
61 | { | |
62 | u16 tmp; | |
63 | ||
64 | tmp = r8a66597_read(r8a66597, INTENB0); | |
65 | r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, | |
66 | INTENB0); | |
67 | r8a66597_bset(r8a66597, (1 << pipenum), reg); | |
68 | r8a66597_write(r8a66597, tmp, INTENB0); | |
69 | } | |
70 | ||
71 | static void disable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum, | |
72 | unsigned long reg) | |
73 | { | |
74 | u16 tmp; | |
75 | ||
76 | tmp = r8a66597_read(r8a66597, INTENB0); | |
77 | r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, | |
78 | INTENB0); | |
79 | r8a66597_bclr(r8a66597, (1 << pipenum), reg); | |
80 | r8a66597_write(r8a66597, tmp, INTENB0); | |
81 | } | |
82 | ||
83 | static void r8a66597_usb_connect(struct r8a66597 *r8a66597) | |
84 | { | |
85 | r8a66597_bset(r8a66597, CTRE, INTENB0); | |
86 | r8a66597_bset(r8a66597, BEMPE | BRDYE, INTENB0); | |
87 | ||
88 | r8a66597_bset(r8a66597, DPRPU, SYSCFG0); | |
89 | } | |
90 | ||
91 | static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597) | |
92 | __releases(r8a66597->lock) | |
93 | __acquires(r8a66597->lock) | |
94 | { | |
95 | r8a66597_bclr(r8a66597, CTRE, INTENB0); | |
96 | r8a66597_bclr(r8a66597, BEMPE | BRDYE, INTENB0); | |
97 | r8a66597_bclr(r8a66597, DPRPU, SYSCFG0); | |
98 | ||
99 | r8a66597->gadget.speed = USB_SPEED_UNKNOWN; | |
100 | spin_unlock(&r8a66597->lock); | |
101 | r8a66597->driver->disconnect(&r8a66597->gadget); | |
102 | spin_lock(&r8a66597->lock); | |
103 | ||
104 | disable_controller(r8a66597); | |
105 | INIT_LIST_HEAD(&r8a66597->ep[0].queue); | |
106 | } | |
107 | ||
108 | static inline u16 control_reg_get_pid(struct r8a66597 *r8a66597, u16 pipenum) | |
109 | { | |
110 | u16 pid = 0; | |
111 | unsigned long offset; | |
112 | ||
113 | if (pipenum == 0) | |
114 | pid = r8a66597_read(r8a66597, DCPCTR) & PID; | |
115 | else if (pipenum < R8A66597_MAX_NUM_PIPE) { | |
116 | offset = get_pipectr_addr(pipenum); | |
117 | pid = r8a66597_read(r8a66597, offset) & PID; | |
118 | } else | |
119 | printk(KERN_ERR "unexpect pipe num (%d)\n", pipenum); | |
120 | ||
121 | return pid; | |
122 | } | |
123 | ||
124 | static inline void control_reg_set_pid(struct r8a66597 *r8a66597, u16 pipenum, | |
125 | u16 pid) | |
126 | { | |
127 | unsigned long offset; | |
128 | ||
129 | if (pipenum == 0) | |
130 | r8a66597_mdfy(r8a66597, pid, PID, DCPCTR); | |
131 | else if (pipenum < R8A66597_MAX_NUM_PIPE) { | |
132 | offset = get_pipectr_addr(pipenum); | |
133 | r8a66597_mdfy(r8a66597, pid, PID, offset); | |
134 | } else | |
135 | printk(KERN_ERR "unexpect pipe num (%d)\n", pipenum); | |
136 | } | |
137 | ||
138 | static inline void pipe_start(struct r8a66597 *r8a66597, u16 pipenum) | |
139 | { | |
140 | control_reg_set_pid(r8a66597, pipenum, PID_BUF); | |
141 | } | |
142 | ||
143 | static inline void pipe_stop(struct r8a66597 *r8a66597, u16 pipenum) | |
144 | { | |
145 | control_reg_set_pid(r8a66597, pipenum, PID_NAK); | |
146 | } | |
147 | ||
148 | static inline void pipe_stall(struct r8a66597 *r8a66597, u16 pipenum) | |
149 | { | |
150 | control_reg_set_pid(r8a66597, pipenum, PID_STALL); | |
151 | } | |
152 | ||
153 | static inline u16 control_reg_get(struct r8a66597 *r8a66597, u16 pipenum) | |
154 | { | |
155 | u16 ret = 0; | |
156 | unsigned long offset; | |
157 | ||
158 | if (pipenum == 0) | |
159 | ret = r8a66597_read(r8a66597, DCPCTR); | |
160 | else if (pipenum < R8A66597_MAX_NUM_PIPE) { | |
161 | offset = get_pipectr_addr(pipenum); | |
162 | ret = r8a66597_read(r8a66597, offset); | |
163 | } else | |
164 | printk(KERN_ERR "unexpect pipe num (%d)\n", pipenum); | |
165 | ||
166 | return ret; | |
167 | } | |
168 | ||
169 | static inline void control_reg_sqclr(struct r8a66597 *r8a66597, u16 pipenum) | |
170 | { | |
171 | unsigned long offset; | |
172 | ||
173 | pipe_stop(r8a66597, pipenum); | |
174 | ||
175 | if (pipenum == 0) | |
176 | r8a66597_bset(r8a66597, SQCLR, DCPCTR); | |
177 | else if (pipenum < R8A66597_MAX_NUM_PIPE) { | |
178 | offset = get_pipectr_addr(pipenum); | |
179 | r8a66597_bset(r8a66597, SQCLR, offset); | |
180 | } else | |
181 | printk(KERN_ERR "unexpect pipe num(%d)\n", pipenum); | |
182 | } | |
183 | ||
184 | static inline int get_buffer_size(struct r8a66597 *r8a66597, u16 pipenum) | |
185 | { | |
186 | u16 tmp; | |
187 | int size; | |
188 | ||
189 | if (pipenum == 0) { | |
190 | tmp = r8a66597_read(r8a66597, DCPCFG); | |
191 | if ((tmp & R8A66597_CNTMD) != 0) | |
192 | size = 256; | |
193 | else { | |
194 | tmp = r8a66597_read(r8a66597, DCPMAXP); | |
195 | size = tmp & MAXP; | |
196 | } | |
197 | } else { | |
198 | r8a66597_write(r8a66597, pipenum, PIPESEL); | |
199 | tmp = r8a66597_read(r8a66597, PIPECFG); | |
200 | if ((tmp & R8A66597_CNTMD) != 0) { | |
201 | tmp = r8a66597_read(r8a66597, PIPEBUF); | |
202 | size = ((tmp >> 10) + 1) * 64; | |
203 | } else { | |
204 | tmp = r8a66597_read(r8a66597, PIPEMAXP); | |
205 | size = tmp & MXPS; | |
206 | } | |
207 | } | |
208 | ||
209 | return size; | |
210 | } | |
211 | ||
212 | static inline unsigned short mbw_value(struct r8a66597 *r8a66597) | |
213 | { | |
214 | if (r8a66597->pdata->on_chip) | |
215 | return MBW_32; | |
216 | else | |
217 | return MBW_16; | |
218 | } | |
219 | ||
220 | static inline void pipe_change(struct r8a66597 *r8a66597, u16 pipenum) | |
221 | { | |
222 | struct r8a66597_ep *ep = r8a66597->pipenum2ep[pipenum]; | |
223 | ||
224 | if (ep->use_dma) | |
225 | return; | |
226 | ||
227 | r8a66597_mdfy(r8a66597, pipenum, CURPIPE, ep->fifosel); | |
228 | ||
229 | ndelay(450); | |
230 | ||
231 | r8a66597_bset(r8a66597, mbw_value(r8a66597), ep->fifosel); | |
232 | } | |
233 | ||
234 | static int pipe_buffer_setting(struct r8a66597 *r8a66597, | |
235 | struct r8a66597_pipe_info *info) | |
236 | { | |
237 | u16 bufnum = 0, buf_bsize = 0; | |
238 | u16 pipecfg = 0; | |
239 | ||
240 | if (info->pipe == 0) | |
241 | return -EINVAL; | |
242 | ||
243 | r8a66597_write(r8a66597, info->pipe, PIPESEL); | |
244 | ||
245 | if (info->dir_in) | |
246 | pipecfg |= R8A66597_DIR; | |
247 | pipecfg |= info->type; | |
248 | pipecfg |= info->epnum; | |
249 | switch (info->type) { | |
250 | case R8A66597_INT: | |
251 | bufnum = 4 + (info->pipe - R8A66597_BASE_PIPENUM_INT); | |
252 | buf_bsize = 0; | |
253 | break; | |
254 | case R8A66597_BULK: | |
ef5ce3b6 MD |
255 | /* isochronous pipes may be used as bulk pipes */ |
256 | if (info->pipe > R8A66597_BASE_PIPENUM_BULK) | |
257 | bufnum = info->pipe - R8A66597_BASE_PIPENUM_BULK; | |
258 | else | |
259 | bufnum = info->pipe - R8A66597_BASE_PIPENUM_ISOC; | |
260 | ||
261 | bufnum = R8A66597_BASE_BUFNUM + (bufnum * 16); | |
c4144247 YS |
262 | buf_bsize = 7; |
263 | pipecfg |= R8A66597_DBLB; | |
264 | if (!info->dir_in) | |
265 | pipecfg |= R8A66597_SHTNAK; | |
266 | break; | |
267 | case R8A66597_ISO: | |
ef5ce3b6 | 268 | bufnum = R8A66597_BASE_BUFNUM + |
c4144247 | 269 | (info->pipe - R8A66597_BASE_PIPENUM_ISOC) * 16; |
c4144247 YS |
270 | buf_bsize = 7; |
271 | break; | |
272 | } | |
ef5ce3b6 MD |
273 | |
274 | if (buf_bsize && ((bufnum + 16) >= R8A66597_MAX_BUFNUM)) { | |
275 | pr_err(KERN_ERR "r8a66597 pipe memory is insufficient\n"); | |
c4144247 YS |
276 | return -ENOMEM; |
277 | } | |
278 | ||
279 | r8a66597_write(r8a66597, pipecfg, PIPECFG); | |
280 | r8a66597_write(r8a66597, (buf_bsize << 10) | (bufnum), PIPEBUF); | |
281 | r8a66597_write(r8a66597, info->maxpacket, PIPEMAXP); | |
282 | if (info->interval) | |
283 | info->interval--; | |
284 | r8a66597_write(r8a66597, info->interval, PIPEPERI); | |
285 | ||
286 | return 0; | |
287 | } | |
288 | ||
289 | static void pipe_buffer_release(struct r8a66597 *r8a66597, | |
290 | struct r8a66597_pipe_info *info) | |
291 | { | |
292 | if (info->pipe == 0) | |
293 | return; | |
294 | ||
c4144247 YS |
295 | if (is_bulk_pipe(info->pipe)) |
296 | r8a66597->bulk--; | |
297 | else if (is_interrupt_pipe(info->pipe)) | |
298 | r8a66597->interrupt--; | |
299 | else if (is_isoc_pipe(info->pipe)) { | |
300 | r8a66597->isochronous--; | |
301 | if (info->type == R8A66597_BULK) | |
302 | r8a66597->bulk--; | |
303 | } else | |
304 | printk(KERN_ERR "ep_release: unexpect pipenum (%d)\n", | |
305 | info->pipe); | |
306 | } | |
307 | ||
308 | static void pipe_initialize(struct r8a66597_ep *ep) | |
309 | { | |
310 | struct r8a66597 *r8a66597 = ep->r8a66597; | |
311 | ||
312 | r8a66597_mdfy(r8a66597, 0, CURPIPE, ep->fifosel); | |
313 | ||
314 | r8a66597_write(r8a66597, ACLRM, ep->pipectr); | |
315 | r8a66597_write(r8a66597, 0, ep->pipectr); | |
316 | r8a66597_write(r8a66597, SQCLR, ep->pipectr); | |
317 | if (ep->use_dma) { | |
318 | r8a66597_mdfy(r8a66597, ep->pipenum, CURPIPE, ep->fifosel); | |
319 | ||
320 | ndelay(450); | |
321 | ||
322 | r8a66597_bset(r8a66597, mbw_value(r8a66597), ep->fifosel); | |
323 | } | |
324 | } | |
325 | ||
326 | static void r8a66597_ep_setting(struct r8a66597 *r8a66597, | |
327 | struct r8a66597_ep *ep, | |
328 | const struct usb_endpoint_descriptor *desc, | |
329 | u16 pipenum, int dma) | |
330 | { | |
331 | ep->use_dma = 0; | |
332 | ep->fifoaddr = CFIFO; | |
333 | ep->fifosel = CFIFOSEL; | |
334 | ep->fifoctr = CFIFOCTR; | |
335 | ep->fifotrn = 0; | |
336 | ||
337 | ep->pipectr = get_pipectr_addr(pipenum); | |
338 | ep->pipenum = pipenum; | |
339 | ep->ep.maxpacket = le16_to_cpu(desc->wMaxPacketSize); | |
340 | r8a66597->pipenum2ep[pipenum] = ep; | |
341 | r8a66597->epaddr2ep[desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK] | |
342 | = ep; | |
343 | INIT_LIST_HEAD(&ep->queue); | |
344 | } | |
345 | ||
346 | static void r8a66597_ep_release(struct r8a66597_ep *ep) | |
347 | { | |
348 | struct r8a66597 *r8a66597 = ep->r8a66597; | |
349 | u16 pipenum = ep->pipenum; | |
350 | ||
351 | if (pipenum == 0) | |
352 | return; | |
353 | ||
354 | if (ep->use_dma) | |
355 | r8a66597->num_dma--; | |
356 | ep->pipenum = 0; | |
357 | ep->busy = 0; | |
358 | ep->use_dma = 0; | |
359 | } | |
360 | ||
361 | static int alloc_pipe_config(struct r8a66597_ep *ep, | |
362 | const struct usb_endpoint_descriptor *desc) | |
363 | { | |
364 | struct r8a66597 *r8a66597 = ep->r8a66597; | |
365 | struct r8a66597_pipe_info info; | |
366 | int dma = 0; | |
367 | unsigned char *counter; | |
368 | int ret; | |
369 | ||
370 | ep->desc = desc; | |
371 | ||
372 | if (ep->pipenum) /* already allocated pipe */ | |
373 | return 0; | |
374 | ||
375 | switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) { | |
376 | case USB_ENDPOINT_XFER_BULK: | |
377 | if (r8a66597->bulk >= R8A66597_MAX_NUM_BULK) { | |
378 | if (r8a66597->isochronous >= R8A66597_MAX_NUM_ISOC) { | |
379 | printk(KERN_ERR "bulk pipe is insufficient\n"); | |
380 | return -ENODEV; | |
381 | } else { | |
382 | info.pipe = R8A66597_BASE_PIPENUM_ISOC | |
383 | + r8a66597->isochronous; | |
384 | counter = &r8a66597->isochronous; | |
385 | } | |
386 | } else { | |
387 | info.pipe = R8A66597_BASE_PIPENUM_BULK + r8a66597->bulk; | |
388 | counter = &r8a66597->bulk; | |
389 | } | |
390 | info.type = R8A66597_BULK; | |
391 | dma = 1; | |
392 | break; | |
393 | case USB_ENDPOINT_XFER_INT: | |
394 | if (r8a66597->interrupt >= R8A66597_MAX_NUM_INT) { | |
395 | printk(KERN_ERR "interrupt pipe is insufficient\n"); | |
396 | return -ENODEV; | |
397 | } | |
398 | info.pipe = R8A66597_BASE_PIPENUM_INT + r8a66597->interrupt; | |
399 | info.type = R8A66597_INT; | |
400 | counter = &r8a66597->interrupt; | |
401 | break; | |
402 | case USB_ENDPOINT_XFER_ISOC: | |
403 | if (r8a66597->isochronous >= R8A66597_MAX_NUM_ISOC) { | |
404 | printk(KERN_ERR "isochronous pipe is insufficient\n"); | |
405 | return -ENODEV; | |
406 | } | |
407 | info.pipe = R8A66597_BASE_PIPENUM_ISOC + r8a66597->isochronous; | |
408 | info.type = R8A66597_ISO; | |
409 | counter = &r8a66597->isochronous; | |
410 | break; | |
411 | default: | |
412 | printk(KERN_ERR "unexpect xfer type\n"); | |
413 | return -EINVAL; | |
414 | } | |
415 | ep->type = info.type; | |
416 | ||
417 | info.epnum = desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; | |
418 | info.maxpacket = le16_to_cpu(desc->wMaxPacketSize); | |
419 | info.interval = desc->bInterval; | |
420 | if (desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK) | |
421 | info.dir_in = 1; | |
422 | else | |
423 | info.dir_in = 0; | |
424 | ||
425 | ret = pipe_buffer_setting(r8a66597, &info); | |
426 | if (ret < 0) { | |
427 | printk(KERN_ERR "pipe_buffer_setting fail\n"); | |
428 | return ret; | |
429 | } | |
430 | ||
431 | (*counter)++; | |
432 | if ((counter == &r8a66597->isochronous) && info.type == R8A66597_BULK) | |
433 | r8a66597->bulk++; | |
434 | ||
435 | r8a66597_ep_setting(r8a66597, ep, desc, info.pipe, dma); | |
436 | pipe_initialize(ep); | |
437 | ||
438 | return 0; | |
439 | } | |
440 | ||
441 | static int free_pipe_config(struct r8a66597_ep *ep) | |
442 | { | |
443 | struct r8a66597 *r8a66597 = ep->r8a66597; | |
444 | struct r8a66597_pipe_info info; | |
445 | ||
446 | info.pipe = ep->pipenum; | |
447 | info.type = ep->type; | |
448 | pipe_buffer_release(r8a66597, &info); | |
449 | r8a66597_ep_release(ep); | |
450 | ||
451 | return 0; | |
452 | } | |
453 | ||
454 | /*-------------------------------------------------------------------------*/ | |
455 | static void pipe_irq_enable(struct r8a66597 *r8a66597, u16 pipenum) | |
456 | { | |
457 | enable_irq_ready(r8a66597, pipenum); | |
458 | enable_irq_nrdy(r8a66597, pipenum); | |
459 | } | |
460 | ||
461 | static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum) | |
462 | { | |
463 | disable_irq_ready(r8a66597, pipenum); | |
464 | disable_irq_nrdy(r8a66597, pipenum); | |
465 | } | |
466 | ||
467 | /* if complete is true, gadget driver complete function is not call */ | |
468 | static void control_end(struct r8a66597 *r8a66597, unsigned ccpl) | |
469 | { | |
470 | r8a66597->ep[0].internal_ccpl = ccpl; | |
471 | pipe_start(r8a66597, 0); | |
472 | r8a66597_bset(r8a66597, CCPL, DCPCTR); | |
473 | } | |
474 | ||
475 | static void start_ep0_write(struct r8a66597_ep *ep, | |
476 | struct r8a66597_request *req) | |
477 | { | |
478 | struct r8a66597 *r8a66597 = ep->r8a66597; | |
479 | ||
480 | pipe_change(r8a66597, ep->pipenum); | |
481 | r8a66597_mdfy(r8a66597, ISEL, (ISEL | CURPIPE), CFIFOSEL); | |
482 | r8a66597_write(r8a66597, BCLR, ep->fifoctr); | |
483 | if (req->req.length == 0) { | |
484 | r8a66597_bset(r8a66597, BVAL, ep->fifoctr); | |
485 | pipe_start(r8a66597, 0); | |
486 | transfer_complete(ep, req, 0); | |
487 | } else { | |
488 | r8a66597_write(r8a66597, ~BEMP0, BEMPSTS); | |
489 | irq_ep0_write(ep, req); | |
490 | } | |
491 | } | |
492 | ||
493 | static void start_packet_write(struct r8a66597_ep *ep, | |
494 | struct r8a66597_request *req) | |
495 | { | |
496 | struct r8a66597 *r8a66597 = ep->r8a66597; | |
497 | u16 tmp; | |
498 | ||
499 | pipe_change(r8a66597, ep->pipenum); | |
500 | disable_irq_empty(r8a66597, ep->pipenum); | |
501 | pipe_start(r8a66597, ep->pipenum); | |
502 | ||
503 | tmp = r8a66597_read(r8a66597, ep->fifoctr); | |
504 | if (unlikely((tmp & FRDY) == 0)) | |
505 | pipe_irq_enable(r8a66597, ep->pipenum); | |
506 | else | |
507 | irq_packet_write(ep, req); | |
508 | } | |
509 | ||
510 | static void start_packet_read(struct r8a66597_ep *ep, | |
511 | struct r8a66597_request *req) | |
512 | { | |
513 | struct r8a66597 *r8a66597 = ep->r8a66597; | |
514 | u16 pipenum = ep->pipenum; | |
515 | ||
516 | if (ep->pipenum == 0) { | |
517 | r8a66597_mdfy(r8a66597, 0, (ISEL | CURPIPE), CFIFOSEL); | |
518 | r8a66597_write(r8a66597, BCLR, ep->fifoctr); | |
519 | pipe_start(r8a66597, pipenum); | |
520 | pipe_irq_enable(r8a66597, pipenum); | |
521 | } else { | |
522 | if (ep->use_dma) { | |
523 | r8a66597_bset(r8a66597, TRCLR, ep->fifosel); | |
524 | pipe_change(r8a66597, pipenum); | |
525 | r8a66597_bset(r8a66597, TRENB, ep->fifosel); | |
526 | r8a66597_write(r8a66597, | |
527 | (req->req.length + ep->ep.maxpacket - 1) | |
528 | / ep->ep.maxpacket, | |
529 | ep->fifotrn); | |
530 | } | |
531 | pipe_start(r8a66597, pipenum); /* trigger once */ | |
532 | pipe_irq_enable(r8a66597, pipenum); | |
533 | } | |
534 | } | |
535 | ||
536 | static void start_packet(struct r8a66597_ep *ep, struct r8a66597_request *req) | |
537 | { | |
538 | if (ep->desc->bEndpointAddress & USB_DIR_IN) | |
539 | start_packet_write(ep, req); | |
540 | else | |
541 | start_packet_read(ep, req); | |
542 | } | |
543 | ||
544 | static void start_ep0(struct r8a66597_ep *ep, struct r8a66597_request *req) | |
545 | { | |
546 | u16 ctsq; | |
547 | ||
548 | ctsq = r8a66597_read(ep->r8a66597, INTSTS0) & CTSQ; | |
549 | ||
550 | switch (ctsq) { | |
551 | case CS_RDDS: | |
552 | start_ep0_write(ep, req); | |
553 | break; | |
554 | case CS_WRDS: | |
555 | start_packet_read(ep, req); | |
556 | break; | |
557 | ||
558 | case CS_WRND: | |
559 | control_end(ep->r8a66597, 0); | |
560 | break; | |
561 | default: | |
562 | printk(KERN_ERR "start_ep0: unexpect ctsq(%x)\n", ctsq); | |
563 | break; | |
564 | } | |
565 | } | |
566 | ||
567 | static void init_controller(struct r8a66597 *r8a66597) | |
568 | { | |
569 | u16 vif = r8a66597->pdata->vif ? LDRV : 0; | |
570 | u16 irq_sense = r8a66597->irq_sense_low ? INTL : 0; | |
571 | u16 endian = r8a66597->pdata->endian ? BIGEND : 0; | |
572 | ||
573 | if (r8a66597->pdata->on_chip) { | |
574 | r8a66597_bset(r8a66597, 0x04, SYSCFG1); | |
575 | r8a66597_bset(r8a66597, HSE, SYSCFG0); | |
576 | ||
577 | r8a66597_bclr(r8a66597, USBE, SYSCFG0); | |
578 | r8a66597_bclr(r8a66597, DPRPU, SYSCFG0); | |
579 | r8a66597_bset(r8a66597, USBE, SYSCFG0); | |
580 | ||
581 | r8a66597_bset(r8a66597, SCKE, SYSCFG0); | |
582 | ||
583 | r8a66597_bset(r8a66597, irq_sense, INTENB1); | |
584 | r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, | |
585 | DMA0CFG); | |
586 | } else { | |
587 | r8a66597_bset(r8a66597, vif | endian, PINCFG); | |
588 | r8a66597_bset(r8a66597, HSE, SYSCFG0); /* High spd */ | |
589 | r8a66597_mdfy(r8a66597, get_xtal_from_pdata(r8a66597->pdata), | |
590 | XTAL, SYSCFG0); | |
591 | ||
592 | r8a66597_bclr(r8a66597, USBE, SYSCFG0); | |
593 | r8a66597_bclr(r8a66597, DPRPU, SYSCFG0); | |
594 | r8a66597_bset(r8a66597, USBE, SYSCFG0); | |
595 | ||
596 | r8a66597_bset(r8a66597, XCKE, SYSCFG0); | |
597 | ||
598 | msleep(3); | |
599 | ||
600 | r8a66597_bset(r8a66597, PLLC, SYSCFG0); | |
601 | ||
602 | msleep(1); | |
603 | ||
604 | r8a66597_bset(r8a66597, SCKE, SYSCFG0); | |
605 | ||
606 | r8a66597_bset(r8a66597, irq_sense, INTENB1); | |
607 | r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, | |
608 | DMA0CFG); | |
609 | } | |
610 | } | |
611 | ||
612 | static void disable_controller(struct r8a66597 *r8a66597) | |
613 | { | |
614 | if (r8a66597->pdata->on_chip) { | |
615 | r8a66597_bset(r8a66597, SCKE, SYSCFG0); | |
616 | ||
617 | r8a66597_write(r8a66597, 0, INTENB0); | |
618 | r8a66597_write(r8a66597, 0, INTENB1); | |
619 | ||
620 | r8a66597_bclr(r8a66597, USBE, SYSCFG0); | |
621 | r8a66597_bclr(r8a66597, SCKE, SYSCFG0); | |
622 | ||
623 | } else { | |
624 | r8a66597_bclr(r8a66597, SCKE, SYSCFG0); | |
625 | udelay(1); | |
626 | r8a66597_bclr(r8a66597, PLLC, SYSCFG0); | |
627 | udelay(1); | |
628 | udelay(1); | |
629 | r8a66597_bclr(r8a66597, XCKE, SYSCFG0); | |
630 | } | |
631 | } | |
632 | ||
633 | static void r8a66597_start_xclock(struct r8a66597 *r8a66597) | |
634 | { | |
635 | u16 tmp; | |
636 | ||
637 | if (!r8a66597->pdata->on_chip) { | |
638 | tmp = r8a66597_read(r8a66597, SYSCFG0); | |
639 | if (!(tmp & XCKE)) | |
640 | r8a66597_bset(r8a66597, XCKE, SYSCFG0); | |
641 | } | |
642 | } | |
643 | ||
644 | static struct r8a66597_request *get_request_from_ep(struct r8a66597_ep *ep) | |
645 | { | |
646 | return list_entry(ep->queue.next, struct r8a66597_request, queue); | |
647 | } | |
648 | ||
649 | /*-------------------------------------------------------------------------*/ | |
650 | static void transfer_complete(struct r8a66597_ep *ep, | |
651 | struct r8a66597_request *req, int status) | |
652 | __releases(r8a66597->lock) | |
653 | __acquires(r8a66597->lock) | |
654 | { | |
655 | int restart = 0; | |
656 | ||
657 | if (unlikely(ep->pipenum == 0)) { | |
658 | if (ep->internal_ccpl) { | |
659 | ep->internal_ccpl = 0; | |
660 | return; | |
661 | } | |
662 | } | |
663 | ||
664 | list_del_init(&req->queue); | |
665 | if (ep->r8a66597->gadget.speed == USB_SPEED_UNKNOWN) | |
666 | req->req.status = -ESHUTDOWN; | |
667 | else | |
668 | req->req.status = status; | |
669 | ||
670 | if (!list_empty(&ep->queue)) | |
671 | restart = 1; | |
672 | ||
673 | spin_unlock(&ep->r8a66597->lock); | |
674 | req->req.complete(&ep->ep, &req->req); | |
675 | spin_lock(&ep->r8a66597->lock); | |
676 | ||
677 | if (restart) { | |
678 | req = get_request_from_ep(ep); | |
679 | if (ep->desc) | |
680 | start_packet(ep, req); | |
681 | } | |
682 | } | |
683 | ||
684 | static void irq_ep0_write(struct r8a66597_ep *ep, struct r8a66597_request *req) | |
685 | { | |
686 | int i; | |
687 | u16 tmp; | |
688 | unsigned bufsize; | |
689 | size_t size; | |
690 | void *buf; | |
691 | u16 pipenum = ep->pipenum; | |
692 | struct r8a66597 *r8a66597 = ep->r8a66597; | |
693 | ||
694 | pipe_change(r8a66597, pipenum); | |
695 | r8a66597_bset(r8a66597, ISEL, ep->fifosel); | |
696 | ||
697 | i = 0; | |
698 | do { | |
699 | tmp = r8a66597_read(r8a66597, ep->fifoctr); | |
700 | if (i++ > 100000) { | |
701 | printk(KERN_ERR "pipe0 is busy. maybe cpu i/o bus" | |
702 | "conflict. please power off this controller."); | |
703 | return; | |
704 | } | |
705 | ndelay(1); | |
706 | } while ((tmp & FRDY) == 0); | |
707 | ||
708 | /* prepare parameters */ | |
709 | bufsize = get_buffer_size(r8a66597, pipenum); | |
710 | buf = req->req.buf + req->req.actual; | |
711 | size = min(bufsize, req->req.length - req->req.actual); | |
712 | ||
713 | /* write fifo */ | |
714 | if (req->req.buf) { | |
715 | if (size > 0) | |
716 | r8a66597_write_fifo(r8a66597, ep->fifoaddr, buf, size); | |
717 | if ((size == 0) || ((size % ep->ep.maxpacket) != 0)) | |
718 | r8a66597_bset(r8a66597, BVAL, ep->fifoctr); | |
719 | } | |
720 | ||
721 | /* update parameters */ | |
722 | req->req.actual += size; | |
723 | ||
724 | /* check transfer finish */ | |
725 | if ((!req->req.zero && (req->req.actual == req->req.length)) | |
726 | || (size % ep->ep.maxpacket) | |
727 | || (size == 0)) { | |
728 | disable_irq_ready(r8a66597, pipenum); | |
729 | disable_irq_empty(r8a66597, pipenum); | |
730 | } else { | |
731 | disable_irq_ready(r8a66597, pipenum); | |
732 | enable_irq_empty(r8a66597, pipenum); | |
733 | } | |
734 | pipe_start(r8a66597, pipenum); | |
735 | } | |
736 | ||
737 | static void irq_packet_write(struct r8a66597_ep *ep, | |
738 | struct r8a66597_request *req) | |
739 | { | |
740 | u16 tmp; | |
741 | unsigned bufsize; | |
742 | size_t size; | |
743 | void *buf; | |
744 | u16 pipenum = ep->pipenum; | |
745 | struct r8a66597 *r8a66597 = ep->r8a66597; | |
746 | ||
747 | pipe_change(r8a66597, pipenum); | |
748 | tmp = r8a66597_read(r8a66597, ep->fifoctr); | |
749 | if (unlikely((tmp & FRDY) == 0)) { | |
750 | pipe_stop(r8a66597, pipenum); | |
751 | pipe_irq_disable(r8a66597, pipenum); | |
752 | printk(KERN_ERR "write fifo not ready. pipnum=%d\n", pipenum); | |
753 | return; | |
754 | } | |
755 | ||
756 | /* prepare parameters */ | |
757 | bufsize = get_buffer_size(r8a66597, pipenum); | |
758 | buf = req->req.buf + req->req.actual; | |
759 | size = min(bufsize, req->req.length - req->req.actual); | |
760 | ||
761 | /* write fifo */ | |
762 | if (req->req.buf) { | |
763 | r8a66597_write_fifo(r8a66597, ep->fifoaddr, buf, size); | |
764 | if ((size == 0) | |
765 | || ((size % ep->ep.maxpacket) != 0) | |
766 | || ((bufsize != ep->ep.maxpacket) | |
767 | && (bufsize > size))) | |
768 | r8a66597_bset(r8a66597, BVAL, ep->fifoctr); | |
769 | } | |
770 | ||
771 | /* update parameters */ | |
772 | req->req.actual += size; | |
773 | /* check transfer finish */ | |
774 | if ((!req->req.zero && (req->req.actual == req->req.length)) | |
775 | || (size % ep->ep.maxpacket) | |
776 | || (size == 0)) { | |
777 | disable_irq_ready(r8a66597, pipenum); | |
778 | enable_irq_empty(r8a66597, pipenum); | |
779 | } else { | |
780 | disable_irq_empty(r8a66597, pipenum); | |
781 | pipe_irq_enable(r8a66597, pipenum); | |
782 | } | |
783 | } | |
784 | ||
785 | static void irq_packet_read(struct r8a66597_ep *ep, | |
786 | struct r8a66597_request *req) | |
787 | { | |
788 | u16 tmp; | |
789 | int rcv_len, bufsize, req_len; | |
790 | int size; | |
791 | void *buf; | |
792 | u16 pipenum = ep->pipenum; | |
793 | struct r8a66597 *r8a66597 = ep->r8a66597; | |
794 | int finish = 0; | |
795 | ||
796 | pipe_change(r8a66597, pipenum); | |
797 | tmp = r8a66597_read(r8a66597, ep->fifoctr); | |
798 | if (unlikely((tmp & FRDY) == 0)) { | |
799 | req->req.status = -EPIPE; | |
800 | pipe_stop(r8a66597, pipenum); | |
801 | pipe_irq_disable(r8a66597, pipenum); | |
802 | printk(KERN_ERR "read fifo not ready"); | |
803 | return; | |
804 | } | |
805 | ||
806 | /* prepare parameters */ | |
807 | rcv_len = tmp & DTLN; | |
808 | bufsize = get_buffer_size(r8a66597, pipenum); | |
809 | ||
810 | buf = req->req.buf + req->req.actual; | |
811 | req_len = req->req.length - req->req.actual; | |
812 | if (rcv_len < bufsize) | |
813 | size = min(rcv_len, req_len); | |
814 | else | |
815 | size = min(bufsize, req_len); | |
816 | ||
817 | /* update parameters */ | |
818 | req->req.actual += size; | |
819 | ||
820 | /* check transfer finish */ | |
821 | if ((!req->req.zero && (req->req.actual == req->req.length)) | |
822 | || (size % ep->ep.maxpacket) | |
823 | || (size == 0)) { | |
824 | pipe_stop(r8a66597, pipenum); | |
825 | pipe_irq_disable(r8a66597, pipenum); | |
826 | finish = 1; | |
827 | } | |
828 | ||
829 | /* read fifo */ | |
830 | if (req->req.buf) { | |
831 | if (size == 0) | |
832 | r8a66597_write(r8a66597, BCLR, ep->fifoctr); | |
833 | else | |
834 | r8a66597_read_fifo(r8a66597, ep->fifoaddr, buf, size); | |
835 | ||
836 | } | |
837 | ||
838 | if ((ep->pipenum != 0) && finish) | |
839 | transfer_complete(ep, req, 0); | |
840 | } | |
841 | ||
842 | static void irq_pipe_ready(struct r8a66597 *r8a66597, u16 status, u16 enb) | |
843 | { | |
844 | u16 check; | |
845 | u16 pipenum; | |
846 | struct r8a66597_ep *ep; | |
847 | struct r8a66597_request *req; | |
848 | ||
849 | if ((status & BRDY0) && (enb & BRDY0)) { | |
850 | r8a66597_write(r8a66597, ~BRDY0, BRDYSTS); | |
851 | r8a66597_mdfy(r8a66597, 0, CURPIPE, CFIFOSEL); | |
852 | ||
853 | ep = &r8a66597->ep[0]; | |
854 | req = get_request_from_ep(ep); | |
855 | irq_packet_read(ep, req); | |
856 | } else { | |
857 | for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { | |
858 | check = 1 << pipenum; | |
859 | if ((status & check) && (enb & check)) { | |
860 | r8a66597_write(r8a66597, ~check, BRDYSTS); | |
861 | ep = r8a66597->pipenum2ep[pipenum]; | |
862 | req = get_request_from_ep(ep); | |
863 | if (ep->desc->bEndpointAddress & USB_DIR_IN) | |
864 | irq_packet_write(ep, req); | |
865 | else | |
866 | irq_packet_read(ep, req); | |
867 | } | |
868 | } | |
869 | } | |
870 | } | |
871 | ||
872 | static void irq_pipe_empty(struct r8a66597 *r8a66597, u16 status, u16 enb) | |
873 | { | |
874 | u16 tmp; | |
875 | u16 check; | |
876 | u16 pipenum; | |
877 | struct r8a66597_ep *ep; | |
878 | struct r8a66597_request *req; | |
879 | ||
880 | if ((status & BEMP0) && (enb & BEMP0)) { | |
881 | r8a66597_write(r8a66597, ~BEMP0, BEMPSTS); | |
882 | ||
883 | ep = &r8a66597->ep[0]; | |
884 | req = get_request_from_ep(ep); | |
885 | irq_ep0_write(ep, req); | |
886 | } else { | |
887 | for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { | |
888 | check = 1 << pipenum; | |
889 | if ((status & check) && (enb & check)) { | |
890 | r8a66597_write(r8a66597, ~check, BEMPSTS); | |
891 | tmp = control_reg_get(r8a66597, pipenum); | |
892 | if ((tmp & INBUFM) == 0) { | |
893 | disable_irq_empty(r8a66597, pipenum); | |
894 | pipe_irq_disable(r8a66597, pipenum); | |
895 | pipe_stop(r8a66597, pipenum); | |
896 | ep = r8a66597->pipenum2ep[pipenum]; | |
897 | req = get_request_from_ep(ep); | |
898 | if (!list_empty(&ep->queue)) | |
899 | transfer_complete(ep, req, 0); | |
900 | } | |
901 | } | |
902 | } | |
903 | } | |
904 | } | |
905 | ||
906 | static void get_status(struct r8a66597 *r8a66597, struct usb_ctrlrequest *ctrl) | |
907 | __releases(r8a66597->lock) | |
908 | __acquires(r8a66597->lock) | |
909 | { | |
910 | struct r8a66597_ep *ep; | |
911 | u16 pid; | |
912 | u16 status = 0; | |
913 | u16 w_index = le16_to_cpu(ctrl->wIndex); | |
914 | ||
915 | switch (ctrl->bRequestType & USB_RECIP_MASK) { | |
916 | case USB_RECIP_DEVICE: | |
917 | status = 1 << USB_DEVICE_SELF_POWERED; | |
918 | break; | |
919 | case USB_RECIP_INTERFACE: | |
920 | status = 0; | |
921 | break; | |
922 | case USB_RECIP_ENDPOINT: | |
923 | ep = r8a66597->epaddr2ep[w_index & USB_ENDPOINT_NUMBER_MASK]; | |
924 | pid = control_reg_get_pid(r8a66597, ep->pipenum); | |
925 | if (pid == PID_STALL) | |
926 | status = 1 << USB_ENDPOINT_HALT; | |
927 | else | |
928 | status = 0; | |
929 | break; | |
930 | default: | |
931 | pipe_stall(r8a66597, 0); | |
932 | return; /* exit */ | |
933 | } | |
934 | ||
935 | r8a66597->ep0_data = cpu_to_le16(status); | |
936 | r8a66597->ep0_req->buf = &r8a66597->ep0_data; | |
937 | r8a66597->ep0_req->length = 2; | |
938 | /* AV: what happens if we get called again before that gets through? */ | |
939 | spin_unlock(&r8a66597->lock); | |
940 | r8a66597_queue(r8a66597->gadget.ep0, r8a66597->ep0_req, GFP_KERNEL); | |
941 | spin_lock(&r8a66597->lock); | |
942 | } | |
943 | ||
944 | static void clear_feature(struct r8a66597 *r8a66597, | |
945 | struct usb_ctrlrequest *ctrl) | |
946 | { | |
947 | switch (ctrl->bRequestType & USB_RECIP_MASK) { | |
948 | case USB_RECIP_DEVICE: | |
949 | control_end(r8a66597, 1); | |
950 | break; | |
951 | case USB_RECIP_INTERFACE: | |
952 | control_end(r8a66597, 1); | |
953 | break; | |
954 | case USB_RECIP_ENDPOINT: { | |
955 | struct r8a66597_ep *ep; | |
956 | struct r8a66597_request *req; | |
957 | u16 w_index = le16_to_cpu(ctrl->wIndex); | |
958 | ||
959 | ep = r8a66597->epaddr2ep[w_index & USB_ENDPOINT_NUMBER_MASK]; | |
960 | pipe_stop(r8a66597, ep->pipenum); | |
961 | control_reg_sqclr(r8a66597, ep->pipenum); | |
962 | ||
963 | control_end(r8a66597, 1); | |
964 | ||
965 | req = get_request_from_ep(ep); | |
966 | if (ep->busy) { | |
967 | ep->busy = 0; | |
968 | if (list_empty(&ep->queue)) | |
969 | break; | |
970 | start_packet(ep, req); | |
971 | } else if (!list_empty(&ep->queue)) | |
972 | pipe_start(r8a66597, ep->pipenum); | |
973 | } | |
974 | break; | |
975 | default: | |
976 | pipe_stall(r8a66597, 0); | |
977 | break; | |
978 | } | |
979 | } | |
980 | ||
981 | static void set_feature(struct r8a66597 *r8a66597, struct usb_ctrlrequest *ctrl) | |
982 | { | |
983 | ||
984 | switch (ctrl->bRequestType & USB_RECIP_MASK) { | |
985 | case USB_RECIP_DEVICE: | |
986 | control_end(r8a66597, 1); | |
987 | break; | |
988 | case USB_RECIP_INTERFACE: | |
989 | control_end(r8a66597, 1); | |
990 | break; | |
991 | case USB_RECIP_ENDPOINT: { | |
992 | struct r8a66597_ep *ep; | |
993 | u16 w_index = le16_to_cpu(ctrl->wIndex); | |
994 | ||
995 | ep = r8a66597->epaddr2ep[w_index & USB_ENDPOINT_NUMBER_MASK]; | |
996 | pipe_stall(r8a66597, ep->pipenum); | |
997 | ||
998 | control_end(r8a66597, 1); | |
999 | } | |
1000 | break; | |
1001 | default: | |
1002 | pipe_stall(r8a66597, 0); | |
1003 | break; | |
1004 | } | |
1005 | } | |
1006 | ||
1007 | /* if return value is true, call class driver's setup() */ | |
1008 | static int setup_packet(struct r8a66597 *r8a66597, struct usb_ctrlrequest *ctrl) | |
1009 | { | |
1010 | u16 *p = (u16 *)ctrl; | |
1011 | unsigned long offset = USBREQ; | |
1012 | int i, ret = 0; | |
1013 | ||
1014 | /* read fifo */ | |
1015 | r8a66597_write(r8a66597, ~VALID, INTSTS0); | |
1016 | ||
1017 | for (i = 0; i < 4; i++) | |
1018 | p[i] = r8a66597_read(r8a66597, offset + i*2); | |
1019 | ||
1020 | /* check request */ | |
1021 | if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) { | |
1022 | switch (ctrl->bRequest) { | |
1023 | case USB_REQ_GET_STATUS: | |
1024 | get_status(r8a66597, ctrl); | |
1025 | break; | |
1026 | case USB_REQ_CLEAR_FEATURE: | |
1027 | clear_feature(r8a66597, ctrl); | |
1028 | break; | |
1029 | case USB_REQ_SET_FEATURE: | |
1030 | set_feature(r8a66597, ctrl); | |
1031 | break; | |
1032 | default: | |
1033 | ret = 1; | |
1034 | break; | |
1035 | } | |
1036 | } else | |
1037 | ret = 1; | |
1038 | return ret; | |
1039 | } | |
1040 | ||
1041 | static void r8a66597_update_usb_speed(struct r8a66597 *r8a66597) | |
1042 | { | |
1043 | u16 speed = get_usb_speed(r8a66597); | |
1044 | ||
1045 | switch (speed) { | |
1046 | case HSMODE: | |
1047 | r8a66597->gadget.speed = USB_SPEED_HIGH; | |
1048 | break; | |
1049 | case FSMODE: | |
1050 | r8a66597->gadget.speed = USB_SPEED_FULL; | |
1051 | break; | |
1052 | default: | |
1053 | r8a66597->gadget.speed = USB_SPEED_UNKNOWN; | |
1054 | printk(KERN_ERR "USB speed unknown\n"); | |
1055 | } | |
1056 | } | |
1057 | ||
1058 | static void irq_device_state(struct r8a66597 *r8a66597) | |
1059 | { | |
1060 | u16 dvsq; | |
1061 | ||
1062 | dvsq = r8a66597_read(r8a66597, INTSTS0) & DVSQ; | |
1063 | r8a66597_write(r8a66597, ~DVST, INTSTS0); | |
1064 | ||
1065 | if (dvsq == DS_DFLT) { | |
1066 | /* bus reset */ | |
1067 | r8a66597->driver->disconnect(&r8a66597->gadget); | |
1068 | r8a66597_update_usb_speed(r8a66597); | |
1069 | } | |
1070 | if (r8a66597->old_dvsq == DS_CNFG && dvsq != DS_CNFG) | |
1071 | r8a66597_update_usb_speed(r8a66597); | |
1072 | if ((dvsq == DS_CNFG || dvsq == DS_ADDS) | |
1073 | && r8a66597->gadget.speed == USB_SPEED_UNKNOWN) | |
1074 | r8a66597_update_usb_speed(r8a66597); | |
1075 | ||
1076 | r8a66597->old_dvsq = dvsq; | |
1077 | } | |
1078 | ||
1079 | static void irq_control_stage(struct r8a66597 *r8a66597) | |
1080 | __releases(r8a66597->lock) | |
1081 | __acquires(r8a66597->lock) | |
1082 | { | |
1083 | struct usb_ctrlrequest ctrl; | |
1084 | u16 ctsq; | |
1085 | ||
1086 | ctsq = r8a66597_read(r8a66597, INTSTS0) & CTSQ; | |
1087 | r8a66597_write(r8a66597, ~CTRT, INTSTS0); | |
1088 | ||
1089 | switch (ctsq) { | |
1090 | case CS_IDST: { | |
1091 | struct r8a66597_ep *ep; | |
1092 | struct r8a66597_request *req; | |
1093 | ep = &r8a66597->ep[0]; | |
1094 | req = get_request_from_ep(ep); | |
1095 | transfer_complete(ep, req, 0); | |
1096 | } | |
1097 | break; | |
1098 | ||
1099 | case CS_RDDS: | |
1100 | case CS_WRDS: | |
1101 | case CS_WRND: | |
1102 | if (setup_packet(r8a66597, &ctrl)) { | |
1103 | spin_unlock(&r8a66597->lock); | |
1104 | if (r8a66597->driver->setup(&r8a66597->gadget, &ctrl) | |
1105 | < 0) | |
1106 | pipe_stall(r8a66597, 0); | |
1107 | spin_lock(&r8a66597->lock); | |
1108 | } | |
1109 | break; | |
1110 | case CS_RDSS: | |
1111 | case CS_WRSS: | |
1112 | control_end(r8a66597, 0); | |
1113 | break; | |
1114 | default: | |
1115 | printk(KERN_ERR "ctrl_stage: unexpect ctsq(%x)\n", ctsq); | |
1116 | break; | |
1117 | } | |
1118 | } | |
1119 | ||
1120 | static irqreturn_t r8a66597_irq(int irq, void *_r8a66597) | |
1121 | { | |
1122 | struct r8a66597 *r8a66597 = _r8a66597; | |
1123 | u16 intsts0; | |
1124 | u16 intenb0; | |
1125 | u16 brdysts, nrdysts, bempsts; | |
1126 | u16 brdyenb, nrdyenb, bempenb; | |
1127 | u16 savepipe; | |
1128 | u16 mask0; | |
1129 | ||
1130 | spin_lock(&r8a66597->lock); | |
1131 | ||
1132 | intsts0 = r8a66597_read(r8a66597, INTSTS0); | |
1133 | intenb0 = r8a66597_read(r8a66597, INTENB0); | |
1134 | ||
1135 | savepipe = r8a66597_read(r8a66597, CFIFOSEL); | |
1136 | ||
1137 | mask0 = intsts0 & intenb0; | |
1138 | if (mask0) { | |
1139 | brdysts = r8a66597_read(r8a66597, BRDYSTS); | |
1140 | nrdysts = r8a66597_read(r8a66597, NRDYSTS); | |
1141 | bempsts = r8a66597_read(r8a66597, BEMPSTS); | |
1142 | brdyenb = r8a66597_read(r8a66597, BRDYENB); | |
1143 | nrdyenb = r8a66597_read(r8a66597, NRDYENB); | |
1144 | bempenb = r8a66597_read(r8a66597, BEMPENB); | |
1145 | ||
1146 | if (mask0 & VBINT) { | |
1147 | r8a66597_write(r8a66597, 0xffff & ~VBINT, | |
1148 | INTSTS0); | |
1149 | r8a66597_start_xclock(r8a66597); | |
1150 | ||
1151 | /* start vbus sampling */ | |
1152 | r8a66597->old_vbus = r8a66597_read(r8a66597, INTSTS0) | |
1153 | & VBSTS; | |
1154 | r8a66597->scount = R8A66597_MAX_SAMPLING; | |
1155 | ||
1156 | mod_timer(&r8a66597->timer, | |
1157 | jiffies + msecs_to_jiffies(50)); | |
1158 | } | |
1159 | if (intsts0 & DVSQ) | |
1160 | irq_device_state(r8a66597); | |
1161 | ||
1162 | if ((intsts0 & BRDY) && (intenb0 & BRDYE) | |
1163 | && (brdysts & brdyenb)) | |
1164 | irq_pipe_ready(r8a66597, brdysts, brdyenb); | |
1165 | if ((intsts0 & BEMP) && (intenb0 & BEMPE) | |
1166 | && (bempsts & bempenb)) | |
1167 | irq_pipe_empty(r8a66597, bempsts, bempenb); | |
1168 | ||
1169 | if (intsts0 & CTRT) | |
1170 | irq_control_stage(r8a66597); | |
1171 | } | |
1172 | ||
1173 | r8a66597_write(r8a66597, savepipe, CFIFOSEL); | |
1174 | ||
1175 | spin_unlock(&r8a66597->lock); | |
1176 | return IRQ_HANDLED; | |
1177 | } | |
1178 | ||
1179 | static void r8a66597_timer(unsigned long _r8a66597) | |
1180 | { | |
1181 | struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597; | |
1182 | unsigned long flags; | |
1183 | u16 tmp; | |
1184 | ||
1185 | spin_lock_irqsave(&r8a66597->lock, flags); | |
1186 | tmp = r8a66597_read(r8a66597, SYSCFG0); | |
1187 | if (r8a66597->scount > 0) { | |
1188 | tmp = r8a66597_read(r8a66597, INTSTS0) & VBSTS; | |
1189 | if (tmp == r8a66597->old_vbus) { | |
1190 | r8a66597->scount--; | |
1191 | if (r8a66597->scount == 0) { | |
1192 | if (tmp == VBSTS) | |
1193 | r8a66597_usb_connect(r8a66597); | |
1194 | else | |
1195 | r8a66597_usb_disconnect(r8a66597); | |
1196 | } else { | |
1197 | mod_timer(&r8a66597->timer, | |
1198 | jiffies + msecs_to_jiffies(50)); | |
1199 | } | |
1200 | } else { | |
1201 | r8a66597->scount = R8A66597_MAX_SAMPLING; | |
1202 | r8a66597->old_vbus = tmp; | |
1203 | mod_timer(&r8a66597->timer, | |
1204 | jiffies + msecs_to_jiffies(50)); | |
1205 | } | |
1206 | } | |
1207 | spin_unlock_irqrestore(&r8a66597->lock, flags); | |
1208 | } | |
1209 | ||
1210 | /*-------------------------------------------------------------------------*/ | |
1211 | static int r8a66597_enable(struct usb_ep *_ep, | |
1212 | const struct usb_endpoint_descriptor *desc) | |
1213 | { | |
1214 | struct r8a66597_ep *ep; | |
1215 | ||
1216 | ep = container_of(_ep, struct r8a66597_ep, ep); | |
1217 | return alloc_pipe_config(ep, desc); | |
1218 | } | |
1219 | ||
1220 | static int r8a66597_disable(struct usb_ep *_ep) | |
1221 | { | |
1222 | struct r8a66597_ep *ep; | |
1223 | struct r8a66597_request *req; | |
1224 | unsigned long flags; | |
1225 | ||
1226 | ep = container_of(_ep, struct r8a66597_ep, ep); | |
1227 | BUG_ON(!ep); | |
1228 | ||
1229 | while (!list_empty(&ep->queue)) { | |
1230 | req = get_request_from_ep(ep); | |
1231 | spin_lock_irqsave(&ep->r8a66597->lock, flags); | |
1232 | transfer_complete(ep, req, -ECONNRESET); | |
1233 | spin_unlock_irqrestore(&ep->r8a66597->lock, flags); | |
1234 | } | |
1235 | ||
1236 | pipe_irq_disable(ep->r8a66597, ep->pipenum); | |
1237 | return free_pipe_config(ep); | |
1238 | } | |
1239 | ||
1240 | static struct usb_request *r8a66597_alloc_request(struct usb_ep *_ep, | |
1241 | gfp_t gfp_flags) | |
1242 | { | |
1243 | struct r8a66597_request *req; | |
1244 | ||
1245 | req = kzalloc(sizeof(struct r8a66597_request), gfp_flags); | |
1246 | if (!req) | |
1247 | return NULL; | |
1248 | ||
1249 | INIT_LIST_HEAD(&req->queue); | |
1250 | ||
1251 | return &req->req; | |
1252 | } | |
1253 | ||
1254 | static void r8a66597_free_request(struct usb_ep *_ep, struct usb_request *_req) | |
1255 | { | |
1256 | struct r8a66597_request *req; | |
1257 | ||
1258 | req = container_of(_req, struct r8a66597_request, req); | |
1259 | kfree(req); | |
1260 | } | |
1261 | ||
1262 | static int r8a66597_queue(struct usb_ep *_ep, struct usb_request *_req, | |
1263 | gfp_t gfp_flags) | |
1264 | { | |
1265 | struct r8a66597_ep *ep; | |
1266 | struct r8a66597_request *req; | |
1267 | unsigned long flags; | |
1268 | int request = 0; | |
1269 | ||
1270 | ep = container_of(_ep, struct r8a66597_ep, ep); | |
1271 | req = container_of(_req, struct r8a66597_request, req); | |
1272 | ||
1273 | if (ep->r8a66597->gadget.speed == USB_SPEED_UNKNOWN) | |
1274 | return -ESHUTDOWN; | |
1275 | ||
1276 | spin_lock_irqsave(&ep->r8a66597->lock, flags); | |
1277 | ||
1278 | if (list_empty(&ep->queue)) | |
1279 | request = 1; | |
1280 | ||
1281 | list_add_tail(&req->queue, &ep->queue); | |
1282 | req->req.actual = 0; | |
1283 | req->req.status = -EINPROGRESS; | |
1284 | ||
1285 | if (ep->desc == NULL) /* control */ | |
1286 | start_ep0(ep, req); | |
1287 | else { | |
1288 | if (request && !ep->busy) | |
1289 | start_packet(ep, req); | |
1290 | } | |
1291 | ||
1292 | spin_unlock_irqrestore(&ep->r8a66597->lock, flags); | |
1293 | ||
1294 | return 0; | |
1295 | } | |
1296 | ||
1297 | static int r8a66597_dequeue(struct usb_ep *_ep, struct usb_request *_req) | |
1298 | { | |
1299 | struct r8a66597_ep *ep; | |
1300 | struct r8a66597_request *req; | |
1301 | unsigned long flags; | |
1302 | ||
1303 | ep = container_of(_ep, struct r8a66597_ep, ep); | |
1304 | req = container_of(_req, struct r8a66597_request, req); | |
1305 | ||
1306 | spin_lock_irqsave(&ep->r8a66597->lock, flags); | |
1307 | if (!list_empty(&ep->queue)) | |
1308 | transfer_complete(ep, req, -ECONNRESET); | |
1309 | spin_unlock_irqrestore(&ep->r8a66597->lock, flags); | |
1310 | ||
1311 | return 0; | |
1312 | } | |
1313 | ||
1314 | static int r8a66597_set_halt(struct usb_ep *_ep, int value) | |
1315 | { | |
1316 | struct r8a66597_ep *ep; | |
1317 | struct r8a66597_request *req; | |
1318 | unsigned long flags; | |
1319 | int ret = 0; | |
1320 | ||
1321 | ep = container_of(_ep, struct r8a66597_ep, ep); | |
1322 | req = get_request_from_ep(ep); | |
1323 | ||
1324 | spin_lock_irqsave(&ep->r8a66597->lock, flags); | |
1325 | if (!list_empty(&ep->queue)) { | |
1326 | ret = -EAGAIN; | |
1327 | goto out; | |
1328 | } | |
1329 | if (value) { | |
1330 | ep->busy = 1; | |
1331 | pipe_stall(ep->r8a66597, ep->pipenum); | |
1332 | } else { | |
1333 | ep->busy = 0; | |
1334 | pipe_stop(ep->r8a66597, ep->pipenum); | |
1335 | } | |
1336 | ||
1337 | out: | |
1338 | spin_unlock_irqrestore(&ep->r8a66597->lock, flags); | |
1339 | return ret; | |
1340 | } | |
1341 | ||
1342 | static void r8a66597_fifo_flush(struct usb_ep *_ep) | |
1343 | { | |
1344 | struct r8a66597_ep *ep; | |
1345 | unsigned long flags; | |
1346 | ||
1347 | ep = container_of(_ep, struct r8a66597_ep, ep); | |
1348 | spin_lock_irqsave(&ep->r8a66597->lock, flags); | |
1349 | if (list_empty(&ep->queue) && !ep->busy) { | |
1350 | pipe_stop(ep->r8a66597, ep->pipenum); | |
1351 | r8a66597_bclr(ep->r8a66597, BCLR, ep->fifoctr); | |
1352 | } | |
1353 | spin_unlock_irqrestore(&ep->r8a66597->lock, flags); | |
1354 | } | |
1355 | ||
1356 | static struct usb_ep_ops r8a66597_ep_ops = { | |
1357 | .enable = r8a66597_enable, | |
1358 | .disable = r8a66597_disable, | |
1359 | ||
1360 | .alloc_request = r8a66597_alloc_request, | |
1361 | .free_request = r8a66597_free_request, | |
1362 | ||
1363 | .queue = r8a66597_queue, | |
1364 | .dequeue = r8a66597_dequeue, | |
1365 | ||
1366 | .set_halt = r8a66597_set_halt, | |
1367 | .fifo_flush = r8a66597_fifo_flush, | |
1368 | }; | |
1369 | ||
1370 | /*-------------------------------------------------------------------------*/ | |
1371 | static struct r8a66597 *the_controller; | |
1372 | ||
1373 | int usb_gadget_register_driver(struct usb_gadget_driver *driver) | |
1374 | { | |
1375 | struct r8a66597 *r8a66597 = the_controller; | |
1376 | int retval; | |
1377 | ||
1378 | if (!driver | |
1379 | || driver->speed != USB_SPEED_HIGH | |
1380 | || !driver->bind | |
1381 | || !driver->setup) | |
1382 | return -EINVAL; | |
1383 | if (!r8a66597) | |
1384 | return -ENODEV; | |
1385 | if (r8a66597->driver) | |
1386 | return -EBUSY; | |
1387 | ||
1388 | /* hook up the driver */ | |
1389 | driver->driver.bus = NULL; | |
1390 | r8a66597->driver = driver; | |
1391 | r8a66597->gadget.dev.driver = &driver->driver; | |
1392 | ||
1393 | retval = device_add(&r8a66597->gadget.dev); | |
1394 | if (retval) { | |
1395 | printk(KERN_ERR "device_add error (%d)\n", retval); | |
1396 | goto error; | |
1397 | } | |
1398 | ||
1399 | retval = driver->bind(&r8a66597->gadget); | |
1400 | if (retval) { | |
1401 | printk(KERN_ERR "bind to driver error (%d)\n", retval); | |
1402 | device_del(&r8a66597->gadget.dev); | |
1403 | goto error; | |
1404 | } | |
1405 | ||
1406 | r8a66597_bset(r8a66597, VBSE, INTENB0); | |
1407 | if (r8a66597_read(r8a66597, INTSTS0) & VBSTS) { | |
1408 | r8a66597_start_xclock(r8a66597); | |
1409 | /* start vbus sampling */ | |
1410 | r8a66597->old_vbus = r8a66597_read(r8a66597, | |
1411 | INTSTS0) & VBSTS; | |
1412 | r8a66597->scount = R8A66597_MAX_SAMPLING; | |
1413 | mod_timer(&r8a66597->timer, jiffies + msecs_to_jiffies(50)); | |
1414 | } | |
1415 | ||
1416 | return 0; | |
1417 | ||
1418 | error: | |
1419 | r8a66597->driver = NULL; | |
1420 | r8a66597->gadget.dev.driver = NULL; | |
1421 | ||
1422 | return retval; | |
1423 | } | |
1424 | EXPORT_SYMBOL(usb_gadget_register_driver); | |
1425 | ||
1426 | int usb_gadget_unregister_driver(struct usb_gadget_driver *driver) | |
1427 | { | |
1428 | struct r8a66597 *r8a66597 = the_controller; | |
1429 | unsigned long flags; | |
1430 | ||
1431 | if (driver != r8a66597->driver || !driver->unbind) | |
1432 | return -EINVAL; | |
1433 | ||
1434 | spin_lock_irqsave(&r8a66597->lock, flags); | |
1435 | if (r8a66597->gadget.speed != USB_SPEED_UNKNOWN) | |
1436 | r8a66597_usb_disconnect(r8a66597); | |
1437 | spin_unlock_irqrestore(&r8a66597->lock, flags); | |
1438 | ||
1439 | r8a66597_bclr(r8a66597, VBSE, INTENB0); | |
1440 | ||
1441 | driver->unbind(&r8a66597->gadget); | |
1442 | ||
1443 | init_controller(r8a66597); | |
1444 | disable_controller(r8a66597); | |
1445 | ||
1446 | device_del(&r8a66597->gadget.dev); | |
1447 | r8a66597->driver = NULL; | |
1448 | return 0; | |
1449 | } | |
1450 | EXPORT_SYMBOL(usb_gadget_unregister_driver); | |
1451 | ||
1452 | /*-------------------------------------------------------------------------*/ | |
1453 | static int r8a66597_get_frame(struct usb_gadget *_gadget) | |
1454 | { | |
1455 | struct r8a66597 *r8a66597 = gadget_to_r8a66597(_gadget); | |
1456 | return r8a66597_read(r8a66597, FRMNUM) & 0x03FF; | |
1457 | } | |
1458 | ||
1459 | static struct usb_gadget_ops r8a66597_gadget_ops = { | |
1460 | .get_frame = r8a66597_get_frame, | |
1461 | }; | |
1462 | ||
1463 | static int __exit r8a66597_remove(struct platform_device *pdev) | |
1464 | { | |
1465 | struct r8a66597 *r8a66597 = dev_get_drvdata(&pdev->dev); | |
1466 | ||
1467 | del_timer_sync(&r8a66597->timer); | |
1468 | iounmap((void *)r8a66597->reg); | |
1469 | free_irq(platform_get_irq(pdev, 0), r8a66597); | |
1470 | r8a66597_free_request(&r8a66597->ep[0].ep, r8a66597->ep0_req); | |
d2e27bdf MD |
1471 | #ifdef CONFIG_HAVE_CLK |
1472 | if (r8a66597->pdata->on_chip) { | |
1473 | clk_disable(r8a66597->clk); | |
1474 | clk_put(r8a66597->clk); | |
1475 | } | |
1476 | #endif | |
c4144247 YS |
1477 | kfree(r8a66597); |
1478 | return 0; | |
1479 | } | |
1480 | ||
1481 | static void nop_completion(struct usb_ep *ep, struct usb_request *r) | |
1482 | { | |
1483 | } | |
1484 | ||
1485 | static int __init r8a66597_probe(struct platform_device *pdev) | |
1486 | { | |
d2e27bdf MD |
1487 | #ifdef CONFIG_HAVE_CLK |
1488 | char clk_name[8]; | |
1489 | #endif | |
c4144247 YS |
1490 | struct resource *res, *ires; |
1491 | int irq; | |
1492 | void __iomem *reg = NULL; | |
1493 | struct r8a66597 *r8a66597 = NULL; | |
1494 | int ret = 0; | |
1495 | int i; | |
1496 | unsigned long irq_trigger; | |
1497 | ||
1498 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1499 | if (!res) { | |
1500 | ret = -ENODEV; | |
1501 | printk(KERN_ERR "platform_get_resource error.\n"); | |
1502 | goto clean_up; | |
1503 | } | |
1504 | ||
1505 | ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0); | |
1506 | irq = ires->start; | |
1507 | irq_trigger = ires->flags & IRQF_TRIGGER_MASK; | |
1508 | ||
1509 | if (irq < 0) { | |
1510 | ret = -ENODEV; | |
1511 | printk(KERN_ERR "platform_get_irq error.\n"); | |
1512 | goto clean_up; | |
1513 | } | |
1514 | ||
1515 | reg = ioremap(res->start, resource_size(res)); | |
1516 | if (reg == NULL) { | |
1517 | ret = -ENOMEM; | |
1518 | printk(KERN_ERR "ioremap error.\n"); | |
1519 | goto clean_up; | |
1520 | } | |
1521 | ||
1522 | /* initialize ucd */ | |
1523 | r8a66597 = kzalloc(sizeof(struct r8a66597), GFP_KERNEL); | |
1524 | if (r8a66597 == NULL) { | |
1525 | printk(KERN_ERR "kzalloc error\n"); | |
1526 | goto clean_up; | |
1527 | } | |
1528 | ||
1529 | spin_lock_init(&r8a66597->lock); | |
1530 | dev_set_drvdata(&pdev->dev, r8a66597); | |
1531 | r8a66597->pdata = pdev->dev.platform_data; | |
1532 | r8a66597->irq_sense_low = irq_trigger == IRQF_TRIGGER_LOW; | |
1533 | ||
1534 | r8a66597->gadget.ops = &r8a66597_gadget_ops; | |
1535 | device_initialize(&r8a66597->gadget.dev); | |
1536 | dev_set_name(&r8a66597->gadget.dev, "gadget"); | |
1537 | r8a66597->gadget.is_dualspeed = 1; | |
1538 | r8a66597->gadget.dev.parent = &pdev->dev; | |
1539 | r8a66597->gadget.dev.dma_mask = pdev->dev.dma_mask; | |
1540 | r8a66597->gadget.dev.release = pdev->dev.release; | |
1541 | r8a66597->gadget.name = udc_name; | |
1542 | ||
1543 | init_timer(&r8a66597->timer); | |
1544 | r8a66597->timer.function = r8a66597_timer; | |
1545 | r8a66597->timer.data = (unsigned long)r8a66597; | |
1546 | r8a66597->reg = (unsigned long)reg; | |
1547 | ||
d2e27bdf MD |
1548 | #ifdef CONFIG_HAVE_CLK |
1549 | if (r8a66597->pdata->on_chip) { | |
1550 | snprintf(clk_name, sizeof(clk_name), "usb%d", pdev->id); | |
1551 | r8a66597->clk = clk_get(&pdev->dev, clk_name); | |
1552 | if (IS_ERR(r8a66597->clk)) { | |
1553 | dev_err(&pdev->dev, "cannot get clock \"%s\"\n", | |
1554 | clk_name); | |
1555 | ret = PTR_ERR(r8a66597->clk); | |
1556 | goto clean_up; | |
1557 | } | |
1558 | clk_enable(r8a66597->clk); | |
1559 | } | |
1560 | #endif | |
1561 | ||
c4144247 YS |
1562 | disable_controller(r8a66597); /* make sure controller is disabled */ |
1563 | ||
1564 | ret = request_irq(irq, r8a66597_irq, IRQF_DISABLED | IRQF_SHARED, | |
1565 | udc_name, r8a66597); | |
1566 | if (ret < 0) { | |
1567 | printk(KERN_ERR "request_irq error (%d)\n", ret); | |
d2e27bdf | 1568 | goto clean_up2; |
c4144247 YS |
1569 | } |
1570 | ||
1571 | INIT_LIST_HEAD(&r8a66597->gadget.ep_list); | |
1572 | r8a66597->gadget.ep0 = &r8a66597->ep[0].ep; | |
1573 | INIT_LIST_HEAD(&r8a66597->gadget.ep0->ep_list); | |
1574 | for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) { | |
1575 | struct r8a66597_ep *ep = &r8a66597->ep[i]; | |
1576 | ||
1577 | if (i != 0) { | |
1578 | INIT_LIST_HEAD(&r8a66597->ep[i].ep.ep_list); | |
1579 | list_add_tail(&r8a66597->ep[i].ep.ep_list, | |
1580 | &r8a66597->gadget.ep_list); | |
1581 | } | |
1582 | ep->r8a66597 = r8a66597; | |
1583 | INIT_LIST_HEAD(&ep->queue); | |
1584 | ep->ep.name = r8a66597_ep_name[i]; | |
1585 | ep->ep.ops = &r8a66597_ep_ops; | |
1586 | ep->ep.maxpacket = 512; | |
1587 | } | |
1588 | r8a66597->ep[0].ep.maxpacket = 64; | |
1589 | r8a66597->ep[0].pipenum = 0; | |
1590 | r8a66597->ep[0].fifoaddr = CFIFO; | |
1591 | r8a66597->ep[0].fifosel = CFIFOSEL; | |
1592 | r8a66597->ep[0].fifoctr = CFIFOCTR; | |
1593 | r8a66597->ep[0].fifotrn = 0; | |
1594 | r8a66597->ep[0].pipectr = get_pipectr_addr(0); | |
1595 | r8a66597->pipenum2ep[0] = &r8a66597->ep[0]; | |
1596 | r8a66597->epaddr2ep[0] = &r8a66597->ep[0]; | |
1597 | ||
1598 | the_controller = r8a66597; | |
1599 | ||
1600 | r8a66597->ep0_req = r8a66597_alloc_request(&r8a66597->ep[0].ep, | |
1601 | GFP_KERNEL); | |
1602 | if (r8a66597->ep0_req == NULL) | |
d2e27bdf | 1603 | goto clean_up3; |
c4144247 YS |
1604 | r8a66597->ep0_req->complete = nop_completion; |
1605 | ||
1606 | init_controller(r8a66597); | |
1607 | ||
1608 | dev_info(&pdev->dev, "version %s\n", DRIVER_VERSION); | |
1609 | return 0; | |
1610 | ||
d2e27bdf | 1611 | clean_up3: |
c4144247 | 1612 | free_irq(irq, r8a66597); |
d2e27bdf MD |
1613 | clean_up2: |
1614 | #ifdef CONFIG_HAVE_CLK | |
1615 | if (r8a66597->pdata->on_chip) { | |
1616 | clk_disable(r8a66597->clk); | |
1617 | clk_put(r8a66597->clk); | |
1618 | } | |
1619 | #endif | |
c4144247 YS |
1620 | clean_up: |
1621 | if (r8a66597) { | |
1622 | if (r8a66597->ep0_req) | |
1623 | r8a66597_free_request(&r8a66597->ep[0].ep, | |
1624 | r8a66597->ep0_req); | |
1625 | kfree(r8a66597); | |
1626 | } | |
1627 | if (reg) | |
1628 | iounmap(reg); | |
1629 | ||
1630 | return ret; | |
1631 | } | |
1632 | ||
1633 | /*-------------------------------------------------------------------------*/ | |
1634 | static struct platform_driver r8a66597_driver = { | |
1635 | .remove = __exit_p(r8a66597_remove), | |
1636 | .driver = { | |
1637 | .name = (char *) udc_name, | |
1638 | }, | |
1639 | }; | |
1640 | ||
1641 | static int __init r8a66597_udc_init(void) | |
1642 | { | |
1643 | return platform_driver_probe(&r8a66597_driver, r8a66597_probe); | |
1644 | } | |
1645 | module_init(r8a66597_udc_init); | |
1646 | ||
1647 | static void __exit r8a66597_udc_cleanup(void) | |
1648 | { | |
1649 | platform_driver_unregister(&r8a66597_driver); | |
1650 | } | |
1651 | module_exit(r8a66597_udc_cleanup); | |
1652 | ||
1653 | MODULE_DESCRIPTION("R8A66597 USB gadget driver"); | |
1654 | MODULE_LICENSE("GPL"); | |
1655 | MODULE_AUTHOR("Yoshihiro Shimoda"); | |
1656 |