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usb: r8a66597-hcd: fix removed from an attached hub
[mirror_ubuntu-zesty-kernel.git] / drivers / usb / host / r8a66597-hcd.c
1 /*
2 * R8A66597 HCD (Host Controller Driver)
3 *
4 * Copyright (C) 2006-2007 Renesas Solutions Corp.
5 * Portions Copyright (C) 2004 Psion Teklogix (for NetBook PRO)
6 * Portions Copyright (C) 2004-2005 David Brownell
7 * Portions Copyright (C) 1999 Roman Weissgaerber
8 *
9 * Author : Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; version 2 of the License.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
23 *
24 */
25
26 #include <linux/module.h>
27 #include <linux/kernel.h>
28 #include <linux/sched.h>
29 #include <linux/errno.h>
30 #include <linux/init.h>
31 #include <linux/timer.h>
32 #include <linux/delay.h>
33 #include <linux/list.h>
34 #include <linux/interrupt.h>
35 #include <linux/usb.h>
36 #include <linux/platform_device.h>
37 #include <linux/io.h>
38 #include <linux/mm.h>
39 #include <linux/irq.h>
40 #include <asm/cacheflush.h>
41
42 #include "../core/hcd.h"
43 #include "r8a66597.h"
44
45 MODULE_DESCRIPTION("R8A66597 USB Host Controller Driver");
46 MODULE_LICENSE("GPL");
47 MODULE_AUTHOR("Yoshihiro Shimoda");
48 MODULE_ALIAS("platform:r8a66597_hcd");
49
50 #define DRIVER_VERSION "2009-05-26"
51
52 static const char hcd_name[] = "r8a66597_hcd";
53
54 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum);
55 static int r8a66597_get_frame(struct usb_hcd *hcd);
56
57 /* this function must be called with interrupt disabled */
58 static void enable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
59 unsigned long reg)
60 {
61 u16 tmp;
62
63 tmp = r8a66597_read(r8a66597, INTENB0);
64 r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
65 r8a66597_bset(r8a66597, 1 << pipenum, reg);
66 r8a66597_write(r8a66597, tmp, INTENB0);
67 }
68
69 /* this function must be called with interrupt disabled */
70 static void disable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
71 unsigned long reg)
72 {
73 u16 tmp;
74
75 tmp = r8a66597_read(r8a66597, INTENB0);
76 r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
77 r8a66597_bclr(r8a66597, 1 << pipenum, reg);
78 r8a66597_write(r8a66597, tmp, INTENB0);
79 }
80
81 static void set_devadd_reg(struct r8a66597 *r8a66597, u8 r8a66597_address,
82 u16 usbspd, u8 upphub, u8 hubport, int port)
83 {
84 u16 val;
85 unsigned long devadd_reg = get_devadd_addr(r8a66597_address);
86
87 val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001);
88 r8a66597_write(r8a66597, val, devadd_reg);
89 }
90
91 static int r8a66597_clock_enable(struct r8a66597 *r8a66597)
92 {
93 u16 tmp;
94 int i = 0;
95
96 if (r8a66597->pdata->on_chip) {
97 #ifdef CONFIG_HAVE_CLK
98 clk_enable(r8a66597->clk);
99 #endif
100 do {
101 r8a66597_write(r8a66597, SCKE, SYSCFG0);
102 tmp = r8a66597_read(r8a66597, SYSCFG0);
103 if (i++ > 1000) {
104 printk(KERN_ERR "r8a66597: reg access fail.\n");
105 return -ENXIO;
106 }
107 } while ((tmp & SCKE) != SCKE);
108 r8a66597_write(r8a66597, 0x04, 0x02);
109 } else {
110 do {
111 r8a66597_write(r8a66597, USBE, SYSCFG0);
112 tmp = r8a66597_read(r8a66597, SYSCFG0);
113 if (i++ > 1000) {
114 printk(KERN_ERR "r8a66597: reg access fail.\n");
115 return -ENXIO;
116 }
117 } while ((tmp & USBE) != USBE);
118 r8a66597_bclr(r8a66597, USBE, SYSCFG0);
119 r8a66597_mdfy(r8a66597, get_xtal_from_pdata(r8a66597->pdata),
120 XTAL, SYSCFG0);
121
122 i = 0;
123 r8a66597_bset(r8a66597, XCKE, SYSCFG0);
124 do {
125 msleep(1);
126 tmp = r8a66597_read(r8a66597, SYSCFG0);
127 if (i++ > 500) {
128 printk(KERN_ERR "r8a66597: reg access fail.\n");
129 return -ENXIO;
130 }
131 } while ((tmp & SCKE) != SCKE);
132 }
133
134 return 0;
135 }
136
137 static void r8a66597_clock_disable(struct r8a66597 *r8a66597)
138 {
139 r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
140 udelay(1);
141
142 if (r8a66597->pdata->on_chip) {
143 #ifdef CONFIG_HAVE_CLK
144 clk_disable(r8a66597->clk);
145 #endif
146 } else {
147 r8a66597_bclr(r8a66597, PLLC, SYSCFG0);
148 r8a66597_bclr(r8a66597, XCKE, SYSCFG0);
149 r8a66597_bclr(r8a66597, USBE, SYSCFG0);
150 }
151 }
152
153 static void r8a66597_enable_port(struct r8a66597 *r8a66597, int port)
154 {
155 u16 val;
156
157 val = port ? DRPD : DCFM | DRPD;
158 r8a66597_bset(r8a66597, val, get_syscfg_reg(port));
159 r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port));
160
161 r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, get_dmacfg_reg(port));
162 r8a66597_bclr(r8a66597, DTCHE, get_intenb_reg(port));
163 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
164 }
165
166 static void r8a66597_disable_port(struct r8a66597 *r8a66597, int port)
167 {
168 u16 val, tmp;
169
170 r8a66597_write(r8a66597, 0, get_intenb_reg(port));
171 r8a66597_write(r8a66597, 0, get_intsts_reg(port));
172
173 r8a66597_port_power(r8a66597, port, 0);
174
175 do {
176 tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS;
177 udelay(640);
178 } while (tmp == EDGESTS);
179
180 val = port ? DRPD : DCFM | DRPD;
181 r8a66597_bclr(r8a66597, val, get_syscfg_reg(port));
182 r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port));
183 }
184
185 static int enable_controller(struct r8a66597 *r8a66597)
186 {
187 int ret, port;
188 u16 vif = r8a66597->pdata->vif ? LDRV : 0;
189 u16 irq_sense = r8a66597->irq_sense_low ? INTL : 0;
190 u16 endian = r8a66597->pdata->endian ? BIGEND : 0;
191
192 ret = r8a66597_clock_enable(r8a66597);
193 if (ret < 0)
194 return ret;
195
196 r8a66597_bset(r8a66597, vif & LDRV, PINCFG);
197 r8a66597_bset(r8a66597, USBE, SYSCFG0);
198
199 r8a66597_bset(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
200 r8a66597_bset(r8a66597, irq_sense & INTL, SOFCFG);
201 r8a66597_bset(r8a66597, BRDY0, BRDYENB);
202 r8a66597_bset(r8a66597, BEMP0, BEMPENB);
203
204 r8a66597_bset(r8a66597, endian & BIGEND, CFIFOSEL);
205 r8a66597_bset(r8a66597, endian & BIGEND, D0FIFOSEL);
206 r8a66597_bset(r8a66597, endian & BIGEND, D1FIFOSEL);
207 r8a66597_bset(r8a66597, TRNENSEL, SOFCFG);
208
209 r8a66597_bset(r8a66597, SIGNE | SACKE, INTENB1);
210
211 for (port = 0; port < r8a66597->max_root_hub; port++)
212 r8a66597_enable_port(r8a66597, port);
213
214 return 0;
215 }
216
217 static void disable_controller(struct r8a66597 *r8a66597)
218 {
219 int port;
220
221 /* disable interrupts */
222 r8a66597_write(r8a66597, 0, INTENB0);
223 r8a66597_write(r8a66597, 0, INTENB1);
224 r8a66597_write(r8a66597, 0, BRDYENB);
225 r8a66597_write(r8a66597, 0, BEMPENB);
226 r8a66597_write(r8a66597, 0, NRDYENB);
227
228 /* clear status */
229 r8a66597_write(r8a66597, 0, BRDYSTS);
230 r8a66597_write(r8a66597, 0, NRDYSTS);
231 r8a66597_write(r8a66597, 0, BEMPSTS);
232
233 for (port = 0; port < r8a66597->max_root_hub; port++)
234 r8a66597_disable_port(r8a66597, port);
235
236 r8a66597_clock_disable(r8a66597);
237 }
238
239 static int get_parent_r8a66597_address(struct r8a66597 *r8a66597,
240 struct usb_device *udev)
241 {
242 struct r8a66597_device *dev;
243
244 if (udev->parent && udev->parent->devnum != 1)
245 udev = udev->parent;
246
247 dev = dev_get_drvdata(&udev->dev);
248 if (dev)
249 return dev->address;
250 else
251 return 0;
252 }
253
254 static int is_child_device(char *devpath)
255 {
256 return (devpath[2] ? 1 : 0);
257 }
258
259 static int is_hub_limit(char *devpath)
260 {
261 return ((strlen(devpath) >= 4) ? 1 : 0);
262 }
263
264 static void get_port_number(struct r8a66597 *r8a66597,
265 char *devpath, u16 *root_port, u16 *hub_port)
266 {
267 if (root_port) {
268 *root_port = (devpath[0] & 0x0F) - 1;
269 if (*root_port >= r8a66597->max_root_hub)
270 printk(KERN_ERR "r8a66597: Illegal root port number.\n");
271 }
272 if (hub_port)
273 *hub_port = devpath[2] & 0x0F;
274 }
275
276 static u16 get_r8a66597_usb_speed(enum usb_device_speed speed)
277 {
278 u16 usbspd = 0;
279
280 switch (speed) {
281 case USB_SPEED_LOW:
282 usbspd = LSMODE;
283 break;
284 case USB_SPEED_FULL:
285 usbspd = FSMODE;
286 break;
287 case USB_SPEED_HIGH:
288 usbspd = HSMODE;
289 break;
290 default:
291 printk(KERN_ERR "r8a66597: unknown speed\n");
292 break;
293 }
294
295 return usbspd;
296 }
297
298 static void set_child_connect_map(struct r8a66597 *r8a66597, int address)
299 {
300 int idx;
301
302 idx = address / 32;
303 r8a66597->child_connect_map[idx] |= 1 << (address % 32);
304 }
305
306 static void put_child_connect_map(struct r8a66597 *r8a66597, int address)
307 {
308 int idx;
309
310 idx = address / 32;
311 r8a66597->child_connect_map[idx] &= ~(1 << (address % 32));
312 }
313
314 static void set_pipe_reg_addr(struct r8a66597_pipe *pipe, u8 dma_ch)
315 {
316 u16 pipenum = pipe->info.pipenum;
317 const unsigned long fifoaddr[] = {D0FIFO, D1FIFO, CFIFO};
318 const unsigned long fifosel[] = {D0FIFOSEL, D1FIFOSEL, CFIFOSEL};
319 const unsigned long fifoctr[] = {D0FIFOCTR, D1FIFOCTR, CFIFOCTR};
320
321 if (dma_ch > R8A66597_PIPE_NO_DMA) /* dma fifo not use? */
322 dma_ch = R8A66597_PIPE_NO_DMA;
323
324 pipe->fifoaddr = fifoaddr[dma_ch];
325 pipe->fifosel = fifosel[dma_ch];
326 pipe->fifoctr = fifoctr[dma_ch];
327
328 if (pipenum == 0)
329 pipe->pipectr = DCPCTR;
330 else
331 pipe->pipectr = get_pipectr_addr(pipenum);
332
333 if (check_bulk_or_isoc(pipenum)) {
334 pipe->pipetre = get_pipetre_addr(pipenum);
335 pipe->pipetrn = get_pipetrn_addr(pipenum);
336 } else {
337 pipe->pipetre = 0;
338 pipe->pipetrn = 0;
339 }
340 }
341
342 static struct r8a66597_device *
343 get_urb_to_r8a66597_dev(struct r8a66597 *r8a66597, struct urb *urb)
344 {
345 if (usb_pipedevice(urb->pipe) == 0)
346 return &r8a66597->device0;
347
348 return dev_get_drvdata(&urb->dev->dev);
349 }
350
351 static int make_r8a66597_device(struct r8a66597 *r8a66597,
352 struct urb *urb, u8 addr)
353 {
354 struct r8a66597_device *dev;
355 int usb_address = urb->setup_packet[2]; /* urb->pipe is address 0 */
356
357 dev = kzalloc(sizeof(struct r8a66597_device), GFP_ATOMIC);
358 if (dev == NULL)
359 return -ENOMEM;
360
361 dev_set_drvdata(&urb->dev->dev, dev);
362 dev->udev = urb->dev;
363 dev->address = addr;
364 dev->usb_address = usb_address;
365 dev->state = USB_STATE_ADDRESS;
366 dev->ep_in_toggle = 0;
367 dev->ep_out_toggle = 0;
368 INIT_LIST_HEAD(&dev->device_list);
369 list_add_tail(&dev->device_list, &r8a66597->child_device);
370
371 get_port_number(r8a66597, urb->dev->devpath,
372 &dev->root_port, &dev->hub_port);
373 if (!is_child_device(urb->dev->devpath))
374 r8a66597->root_hub[dev->root_port].dev = dev;
375
376 set_devadd_reg(r8a66597, dev->address,
377 get_r8a66597_usb_speed(urb->dev->speed),
378 get_parent_r8a66597_address(r8a66597, urb->dev),
379 dev->hub_port, dev->root_port);
380
381 return 0;
382 }
383
384 /* this function must be called with interrupt disabled */
385 static u8 alloc_usb_address(struct r8a66597 *r8a66597, struct urb *urb)
386 {
387 u8 addr; /* R8A66597's address */
388 struct r8a66597_device *dev;
389
390 if (is_hub_limit(urb->dev->devpath)) {
391 dev_err(&urb->dev->dev, "External hub limit reached.\n");
392 return 0;
393 }
394
395 dev = get_urb_to_r8a66597_dev(r8a66597, urb);
396 if (dev && dev->state >= USB_STATE_ADDRESS)
397 return dev->address;
398
399 for (addr = 1; addr <= R8A66597_MAX_DEVICE; addr++) {
400 if (r8a66597->address_map & (1 << addr))
401 continue;
402
403 dbg("alloc_address: r8a66597_addr=%d", addr);
404 r8a66597->address_map |= 1 << addr;
405
406 if (make_r8a66597_device(r8a66597, urb, addr) < 0)
407 return 0;
408
409 return addr;
410 }
411
412 dev_err(&urb->dev->dev,
413 "cannot communicate with a USB device more than 10.(%x)\n",
414 r8a66597->address_map);
415
416 return 0;
417 }
418
419 /* this function must be called with interrupt disabled */
420 static void free_usb_address(struct r8a66597 *r8a66597,
421 struct r8a66597_device *dev, int reset)
422 {
423 int port;
424
425 if (!dev)
426 return;
427
428 dbg("free_addr: addr=%d", dev->address);
429
430 dev->state = USB_STATE_DEFAULT;
431 r8a66597->address_map &= ~(1 << dev->address);
432 dev->address = 0;
433 /*
434 * Only when resetting USB, it is necessary to erase drvdata. When
435 * a usb device with usb hub is disconnect, "dev->udev" is already
436 * freed on usb_desconnect(). So we cannot access the data.
437 */
438 if (reset)
439 dev_set_drvdata(&dev->udev->dev, NULL);
440 list_del(&dev->device_list);
441 kfree(dev);
442
443 for (port = 0; port < r8a66597->max_root_hub; port++) {
444 if (r8a66597->root_hub[port].dev == dev) {
445 r8a66597->root_hub[port].dev = NULL;
446 break;
447 }
448 }
449 }
450
451 static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg,
452 u16 mask, u16 loop)
453 {
454 u16 tmp;
455 int i = 0;
456
457 do {
458 tmp = r8a66597_read(r8a66597, reg);
459 if (i++ > 1000000) {
460 printk(KERN_ERR "r8a66597: register%lx, loop %x "
461 "is timeout\n", reg, loop);
462 break;
463 }
464 ndelay(1);
465 } while ((tmp & mask) != loop);
466 }
467
468 /* this function must be called with interrupt disabled */
469 static void pipe_start(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
470 {
471 u16 tmp;
472
473 tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
474 if ((pipe->info.pipenum != 0) & ((tmp & PID_STALL) != 0)) /* stall? */
475 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
476 r8a66597_mdfy(r8a66597, PID_BUF, PID, pipe->pipectr);
477 }
478
479 /* this function must be called with interrupt disabled */
480 static void pipe_stop(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
481 {
482 u16 tmp;
483
484 tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
485 if ((tmp & PID_STALL11) != PID_STALL11) /* force stall? */
486 r8a66597_mdfy(r8a66597, PID_STALL, PID, pipe->pipectr);
487 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
488 r8a66597_reg_wait(r8a66597, pipe->pipectr, PBUSY, 0);
489 }
490
491 /* this function must be called with interrupt disabled */
492 static void clear_all_buffer(struct r8a66597 *r8a66597,
493 struct r8a66597_pipe *pipe)
494 {
495 u16 tmp;
496
497 if (!pipe || pipe->info.pipenum == 0)
498 return;
499
500 pipe_stop(r8a66597, pipe);
501 r8a66597_bset(r8a66597, ACLRM, pipe->pipectr);
502 tmp = r8a66597_read(r8a66597, pipe->pipectr);
503 tmp = r8a66597_read(r8a66597, pipe->pipectr);
504 tmp = r8a66597_read(r8a66597, pipe->pipectr);
505 r8a66597_bclr(r8a66597, ACLRM, pipe->pipectr);
506 }
507
508 /* this function must be called with interrupt disabled */
509 static void r8a66597_pipe_toggle(struct r8a66597 *r8a66597,
510 struct r8a66597_pipe *pipe, int toggle)
511 {
512 if (toggle)
513 r8a66597_bset(r8a66597, SQSET, pipe->pipectr);
514 else
515 r8a66597_bset(r8a66597, SQCLR, pipe->pipectr);
516 }
517
518 static inline unsigned short mbw_value(struct r8a66597 *r8a66597)
519 {
520 if (r8a66597->pdata->on_chip)
521 return MBW_32;
522 else
523 return MBW_16;
524 }
525
526 /* this function must be called with interrupt disabled */
527 static inline void cfifo_change(struct r8a66597 *r8a66597, u16 pipenum)
528 {
529 unsigned short mbw = mbw_value(r8a66597);
530
531 r8a66597_mdfy(r8a66597, mbw | pipenum, mbw | CURPIPE, CFIFOSEL);
532 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, pipenum);
533 }
534
535 /* this function must be called with interrupt disabled */
536 static inline void fifo_change_from_pipe(struct r8a66597 *r8a66597,
537 struct r8a66597_pipe *pipe)
538 {
539 unsigned short mbw = mbw_value(r8a66597);
540
541 cfifo_change(r8a66597, 0);
542 r8a66597_mdfy(r8a66597, mbw | 0, mbw | CURPIPE, D0FIFOSEL);
543 r8a66597_mdfy(r8a66597, mbw | 0, mbw | CURPIPE, D1FIFOSEL);
544
545 r8a66597_mdfy(r8a66597, mbw | pipe->info.pipenum, mbw | CURPIPE,
546 pipe->fifosel);
547 r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, pipe->info.pipenum);
548 }
549
550 static u16 r8a66597_get_pipenum(struct urb *urb, struct usb_host_endpoint *hep)
551 {
552 struct r8a66597_pipe *pipe = hep->hcpriv;
553
554 if (usb_pipeendpoint(urb->pipe) == 0)
555 return 0;
556 else
557 return pipe->info.pipenum;
558 }
559
560 static u16 get_urb_to_r8a66597_addr(struct r8a66597 *r8a66597, struct urb *urb)
561 {
562 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
563
564 return (usb_pipedevice(urb->pipe) == 0) ? 0 : dev->address;
565 }
566
567 static unsigned short *get_toggle_pointer(struct r8a66597_device *dev,
568 int urb_pipe)
569 {
570 if (!dev)
571 return NULL;
572
573 return usb_pipein(urb_pipe) ? &dev->ep_in_toggle : &dev->ep_out_toggle;
574 }
575
576 /* this function must be called with interrupt disabled */
577 static void pipe_toggle_set(struct r8a66597 *r8a66597,
578 struct r8a66597_pipe *pipe,
579 struct urb *urb, int set)
580 {
581 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
582 unsigned char endpoint = usb_pipeendpoint(urb->pipe);
583 unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
584
585 if (!toggle)
586 return;
587
588 if (set)
589 *toggle |= 1 << endpoint;
590 else
591 *toggle &= ~(1 << endpoint);
592 }
593
594 /* this function must be called with interrupt disabled */
595 static void pipe_toggle_save(struct r8a66597 *r8a66597,
596 struct r8a66597_pipe *pipe,
597 struct urb *urb)
598 {
599 if (r8a66597_read(r8a66597, pipe->pipectr) & SQMON)
600 pipe_toggle_set(r8a66597, pipe, urb, 1);
601 else
602 pipe_toggle_set(r8a66597, pipe, urb, 0);
603 }
604
605 /* this function must be called with interrupt disabled */
606 static void pipe_toggle_restore(struct r8a66597 *r8a66597,
607 struct r8a66597_pipe *pipe,
608 struct urb *urb)
609 {
610 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
611 unsigned char endpoint = usb_pipeendpoint(urb->pipe);
612 unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
613
614 if (!toggle)
615 return;
616
617 r8a66597_pipe_toggle(r8a66597, pipe, *toggle & (1 << endpoint));
618 }
619
620 /* this function must be called with interrupt disabled */
621 static void pipe_buffer_setting(struct r8a66597 *r8a66597,
622 struct r8a66597_pipe_info *info)
623 {
624 u16 val = 0;
625
626 if (info->pipenum == 0)
627 return;
628
629 r8a66597_bset(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
630 r8a66597_bclr(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
631 r8a66597_write(r8a66597, info->pipenum, PIPESEL);
632 if (!info->dir_in)
633 val |= R8A66597_DIR;
634 if (info->type == R8A66597_BULK && info->dir_in)
635 val |= R8A66597_DBLB | R8A66597_SHTNAK;
636 val |= info->type | info->epnum;
637 r8a66597_write(r8a66597, val, PIPECFG);
638
639 r8a66597_write(r8a66597, (info->buf_bsize << 10) | (info->bufnum),
640 PIPEBUF);
641 r8a66597_write(r8a66597, make_devsel(info->address) | info->maxpacket,
642 PIPEMAXP);
643 r8a66597_write(r8a66597, info->interval, PIPEPERI);
644 }
645
646 /* this function must be called with interrupt disabled */
647 static void pipe_setting(struct r8a66597 *r8a66597, struct r8a66597_td *td)
648 {
649 struct r8a66597_pipe_info *info;
650 struct urb *urb = td->urb;
651
652 if (td->pipenum > 0) {
653 info = &td->pipe->info;
654 cfifo_change(r8a66597, 0);
655 pipe_buffer_setting(r8a66597, info);
656
657 if (!usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe),
658 usb_pipeout(urb->pipe)) &&
659 !usb_pipecontrol(urb->pipe)) {
660 r8a66597_pipe_toggle(r8a66597, td->pipe, 0);
661 pipe_toggle_set(r8a66597, td->pipe, urb, 0);
662 clear_all_buffer(r8a66597, td->pipe);
663 usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
664 usb_pipeout(urb->pipe), 1);
665 }
666 pipe_toggle_restore(r8a66597, td->pipe, urb);
667 }
668 }
669
670 /* this function must be called with interrupt disabled */
671 static u16 get_empty_pipenum(struct r8a66597 *r8a66597,
672 struct usb_endpoint_descriptor *ep)
673 {
674 u16 array[R8A66597_MAX_NUM_PIPE], i = 0, min;
675
676 memset(array, 0, sizeof(array));
677 switch (usb_endpoint_type(ep)) {
678 case USB_ENDPOINT_XFER_BULK:
679 if (usb_endpoint_dir_in(ep))
680 array[i++] = 4;
681 else {
682 array[i++] = 3;
683 array[i++] = 5;
684 }
685 break;
686 case USB_ENDPOINT_XFER_INT:
687 if (usb_endpoint_dir_in(ep)) {
688 array[i++] = 6;
689 array[i++] = 7;
690 array[i++] = 8;
691 } else
692 array[i++] = 9;
693 break;
694 case USB_ENDPOINT_XFER_ISOC:
695 if (usb_endpoint_dir_in(ep))
696 array[i++] = 2;
697 else
698 array[i++] = 1;
699 break;
700 default:
701 printk(KERN_ERR "r8a66597: Illegal type\n");
702 return 0;
703 }
704
705 i = 1;
706 min = array[0];
707 while (array[i] != 0) {
708 if (r8a66597->pipe_cnt[min] > r8a66597->pipe_cnt[array[i]])
709 min = array[i];
710 i++;
711 }
712
713 return min;
714 }
715
716 static u16 get_r8a66597_type(__u8 type)
717 {
718 u16 r8a66597_type;
719
720 switch (type) {
721 case USB_ENDPOINT_XFER_BULK:
722 r8a66597_type = R8A66597_BULK;
723 break;
724 case USB_ENDPOINT_XFER_INT:
725 r8a66597_type = R8A66597_INT;
726 break;
727 case USB_ENDPOINT_XFER_ISOC:
728 r8a66597_type = R8A66597_ISO;
729 break;
730 default:
731 printk(KERN_ERR "r8a66597: Illegal type\n");
732 r8a66597_type = 0x0000;
733 break;
734 }
735
736 return r8a66597_type;
737 }
738
739 static u16 get_bufnum(u16 pipenum)
740 {
741 u16 bufnum = 0;
742
743 if (pipenum == 0)
744 bufnum = 0;
745 else if (check_bulk_or_isoc(pipenum))
746 bufnum = 8 + (pipenum - 1) * R8A66597_BUF_BSIZE*2;
747 else if (check_interrupt(pipenum))
748 bufnum = 4 + (pipenum - 6);
749 else
750 printk(KERN_ERR "r8a66597: Illegal pipenum (%d)\n", pipenum);
751
752 return bufnum;
753 }
754
755 static u16 get_buf_bsize(u16 pipenum)
756 {
757 u16 buf_bsize = 0;
758
759 if (pipenum == 0)
760 buf_bsize = 3;
761 else if (check_bulk_or_isoc(pipenum))
762 buf_bsize = R8A66597_BUF_BSIZE - 1;
763 else if (check_interrupt(pipenum))
764 buf_bsize = 0;
765 else
766 printk(KERN_ERR "r8a66597: Illegal pipenum (%d)\n", pipenum);
767
768 return buf_bsize;
769 }
770
771 /* this function must be called with interrupt disabled */
772 static void enable_r8a66597_pipe_dma(struct r8a66597 *r8a66597,
773 struct r8a66597_device *dev,
774 struct r8a66597_pipe *pipe,
775 struct urb *urb)
776 {
777 int i;
778 struct r8a66597_pipe_info *info = &pipe->info;
779 unsigned short mbw = mbw_value(r8a66597);
780
781 /* pipe dma is only for external controlles */
782 if (r8a66597->pdata->on_chip)
783 return;
784
785 if ((pipe->info.pipenum != 0) && (info->type != R8A66597_INT)) {
786 for (i = 0; i < R8A66597_MAX_DMA_CHANNEL; i++) {
787 if ((r8a66597->dma_map & (1 << i)) != 0)
788 continue;
789
790 dev_info(&dev->udev->dev,
791 "address %d, EndpointAddress 0x%02x use "
792 "DMA FIFO\n", usb_pipedevice(urb->pipe),
793 info->dir_in ?
794 USB_ENDPOINT_DIR_MASK + info->epnum
795 : info->epnum);
796
797 r8a66597->dma_map |= 1 << i;
798 dev->dma_map |= 1 << i;
799 set_pipe_reg_addr(pipe, i);
800
801 cfifo_change(r8a66597, 0);
802 r8a66597_mdfy(r8a66597, mbw | pipe->info.pipenum,
803 mbw | CURPIPE, pipe->fifosel);
804
805 r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE,
806 pipe->info.pipenum);
807 r8a66597_bset(r8a66597, BCLR, pipe->fifoctr);
808 break;
809 }
810 }
811 }
812
813 /* this function must be called with interrupt disabled */
814 static void enable_r8a66597_pipe(struct r8a66597 *r8a66597, struct urb *urb,
815 struct usb_host_endpoint *hep,
816 struct r8a66597_pipe_info *info)
817 {
818 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
819 struct r8a66597_pipe *pipe = hep->hcpriv;
820
821 dbg("enable_pipe:");
822
823 pipe->info = *info;
824 set_pipe_reg_addr(pipe, R8A66597_PIPE_NO_DMA);
825 r8a66597->pipe_cnt[pipe->info.pipenum]++;
826 dev->pipe_cnt[pipe->info.pipenum]++;
827
828 enable_r8a66597_pipe_dma(r8a66597, dev, pipe, urb);
829 }
830
831 static void r8a66597_urb_done(struct r8a66597 *r8a66597, struct urb *urb,
832 int status)
833 __releases(r8a66597->lock)
834 __acquires(r8a66597->lock)
835 {
836 if (usb_pipein(urb->pipe) && usb_pipetype(urb->pipe) != PIPE_CONTROL) {
837 void *ptr;
838
839 for (ptr = urb->transfer_buffer;
840 ptr < urb->transfer_buffer + urb->transfer_buffer_length;
841 ptr += PAGE_SIZE)
842 flush_dcache_page(virt_to_page(ptr));
843 }
844
845 usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb);
846 spin_unlock(&r8a66597->lock);
847 usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb, status);
848 spin_lock(&r8a66597->lock);
849 }
850
851 /* this function must be called with interrupt disabled */
852 static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address)
853 {
854 struct r8a66597_td *td, *next;
855 struct urb *urb;
856 struct list_head *list = &r8a66597->pipe_queue[pipenum];
857
858 if (list_empty(list))
859 return;
860
861 list_for_each_entry_safe(td, next, list, queue) {
862 if (td->address != address)
863 continue;
864
865 urb = td->urb;
866 list_del(&td->queue);
867 kfree(td);
868
869 if (urb)
870 r8a66597_urb_done(r8a66597, urb, -ENODEV);
871
872 break;
873 }
874 }
875
876 /* this function must be called with interrupt disabled */
877 static void disable_r8a66597_pipe_all(struct r8a66597 *r8a66597,
878 struct r8a66597_device *dev)
879 {
880 int check_ep0 = 0;
881 u16 pipenum;
882
883 if (!dev)
884 return;
885
886 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
887 if (!dev->pipe_cnt[pipenum])
888 continue;
889
890 if (!check_ep0) {
891 check_ep0 = 1;
892 force_dequeue(r8a66597, 0, dev->address);
893 }
894
895 r8a66597->pipe_cnt[pipenum] -= dev->pipe_cnt[pipenum];
896 dev->pipe_cnt[pipenum] = 0;
897 force_dequeue(r8a66597, pipenum, dev->address);
898 }
899
900 dbg("disable_pipe");
901
902 r8a66597->dma_map &= ~(dev->dma_map);
903 dev->dma_map = 0;
904 }
905
906 static u16 get_interval(struct urb *urb, __u8 interval)
907 {
908 u16 time = 1;
909 int i;
910
911 if (urb->dev->speed == USB_SPEED_HIGH) {
912 if (interval > IITV)
913 time = IITV;
914 else
915 time = interval ? interval - 1 : 0;
916 } else {
917 if (interval > 128) {
918 time = IITV;
919 } else {
920 /* calculate the nearest value for PIPEPERI */
921 for (i = 0; i < 7; i++) {
922 if ((1 << i) < interval &&
923 (1 << (i + 1) > interval))
924 time = 1 << i;
925 }
926 }
927 }
928
929 return time;
930 }
931
932 static unsigned long get_timer_interval(struct urb *urb, __u8 interval)
933 {
934 __u8 i;
935 unsigned long time = 1;
936
937 if (usb_pipeisoc(urb->pipe))
938 return 0;
939
940 if (get_r8a66597_usb_speed(urb->dev->speed) == HSMODE) {
941 for (i = 0; i < (interval - 1); i++)
942 time *= 2;
943 time = time * 125 / 1000; /* uSOF -> msec */
944 } else {
945 time = interval;
946 }
947
948 return time;
949 }
950
951 /* this function must be called with interrupt disabled */
952 static void init_pipe_info(struct r8a66597 *r8a66597, struct urb *urb,
953 struct usb_host_endpoint *hep,
954 struct usb_endpoint_descriptor *ep)
955 {
956 struct r8a66597_pipe_info info;
957
958 info.pipenum = get_empty_pipenum(r8a66597, ep);
959 info.address = get_urb_to_r8a66597_addr(r8a66597, urb);
960 info.epnum = usb_endpoint_num(ep);
961 info.maxpacket = le16_to_cpu(ep->wMaxPacketSize);
962 info.type = get_r8a66597_type(usb_endpoint_type(ep));
963 info.bufnum = get_bufnum(info.pipenum);
964 info.buf_bsize = get_buf_bsize(info.pipenum);
965 if (info.type == R8A66597_BULK) {
966 info.interval = 0;
967 info.timer_interval = 0;
968 } else {
969 info.interval = get_interval(urb, ep->bInterval);
970 info.timer_interval = get_timer_interval(urb, ep->bInterval);
971 }
972 if (usb_endpoint_dir_in(ep))
973 info.dir_in = 1;
974 else
975 info.dir_in = 0;
976
977 enable_r8a66597_pipe(r8a66597, urb, hep, &info);
978 }
979
980 static void init_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
981 {
982 struct r8a66597_device *dev;
983
984 dev = get_urb_to_r8a66597_dev(r8a66597, urb);
985 dev->state = USB_STATE_CONFIGURED;
986 }
987
988 static void pipe_irq_enable(struct r8a66597 *r8a66597, struct urb *urb,
989 u16 pipenum)
990 {
991 if (pipenum == 0 && usb_pipeout(urb->pipe))
992 enable_irq_empty(r8a66597, pipenum);
993 else
994 enable_irq_ready(r8a66597, pipenum);
995
996 if (!usb_pipeisoc(urb->pipe))
997 enable_irq_nrdy(r8a66597, pipenum);
998 }
999
1000 static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum)
1001 {
1002 disable_irq_ready(r8a66597, pipenum);
1003 disable_irq_nrdy(r8a66597, pipenum);
1004 }
1005
1006 static void r8a66597_root_hub_start_polling(struct r8a66597 *r8a66597)
1007 {
1008 mod_timer(&r8a66597->rh_timer,
1009 jiffies + msecs_to_jiffies(R8A66597_RH_POLL_TIME));
1010 }
1011
1012 static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port,
1013 int connect)
1014 {
1015 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1016
1017 rh->old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
1018 rh->scount = R8A66597_MAX_SAMPLING;
1019 if (connect)
1020 rh->port |= 1 << USB_PORT_FEAT_CONNECTION;
1021 else
1022 rh->port &= ~(1 << USB_PORT_FEAT_CONNECTION);
1023 rh->port |= 1 << USB_PORT_FEAT_C_CONNECTION;
1024
1025 r8a66597_root_hub_start_polling(r8a66597);
1026 }
1027
1028 /* this function must be called with interrupt disabled */
1029 static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port,
1030 u16 syssts)
1031 __releases(r8a66597->lock)
1032 __acquires(r8a66597->lock)
1033 {
1034 if (syssts == SE0) {
1035 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port));
1036 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
1037 } else {
1038 if (syssts == FS_JSTS)
1039 r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port));
1040 else if (syssts == LS_JSTS)
1041 r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port));
1042
1043 r8a66597_write(r8a66597, ~DTCH, get_intsts_reg(port));
1044 r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port));
1045
1046 if (r8a66597->bus_suspended)
1047 usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597));
1048 }
1049
1050 spin_unlock(&r8a66597->lock);
1051 usb_hcd_poll_rh_status(r8a66597_to_hcd(r8a66597));
1052 spin_lock(&r8a66597->lock);
1053 }
1054
1055 /* this function must be called with interrupt disabled */
1056 static void r8a66597_usb_connect(struct r8a66597 *r8a66597, int port)
1057 {
1058 u16 speed = get_rh_usb_speed(r8a66597, port);
1059 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1060
1061 rh->port &= ~((1 << USB_PORT_FEAT_HIGHSPEED) |
1062 (1 << USB_PORT_FEAT_LOWSPEED));
1063 if (speed == HSMODE)
1064 rh->port |= (1 << USB_PORT_FEAT_HIGHSPEED);
1065 else if (speed == LSMODE)
1066 rh->port |= (1 << USB_PORT_FEAT_LOWSPEED);
1067
1068 rh->port &= ~(1 << USB_PORT_FEAT_RESET);
1069 rh->port |= 1 << USB_PORT_FEAT_ENABLE;
1070 }
1071
1072 /* this function must be called with interrupt disabled */
1073 static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597, int port)
1074 {
1075 struct r8a66597_device *dev = r8a66597->root_hub[port].dev;
1076
1077 disable_r8a66597_pipe_all(r8a66597, dev);
1078 free_usb_address(r8a66597, dev, 0);
1079
1080 start_root_hub_sampling(r8a66597, port, 0);
1081 }
1082
1083 /* this function must be called with interrupt disabled */
1084 static void prepare_setup_packet(struct r8a66597 *r8a66597,
1085 struct r8a66597_td *td)
1086 {
1087 int i;
1088 __le16 *p = (__le16 *)td->urb->setup_packet;
1089 unsigned long setup_addr = USBREQ;
1090
1091 r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket,
1092 DCPMAXP);
1093 r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1);
1094
1095 for (i = 0; i < 4; i++) {
1096 r8a66597_write(r8a66597, le16_to_cpu(p[i]), setup_addr);
1097 setup_addr += 2;
1098 }
1099 r8a66597_write(r8a66597, SUREQ, DCPCTR);
1100 }
1101
1102 /* this function must be called with interrupt disabled */
1103 static void prepare_packet_read(struct r8a66597 *r8a66597,
1104 struct r8a66597_td *td)
1105 {
1106 struct urb *urb = td->urb;
1107
1108 if (usb_pipecontrol(urb->pipe)) {
1109 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
1110 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
1111 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1112 if (urb->actual_length == 0) {
1113 r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1114 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1115 }
1116 pipe_irq_disable(r8a66597, td->pipenum);
1117 pipe_start(r8a66597, td->pipe);
1118 pipe_irq_enable(r8a66597, urb, td->pipenum);
1119 } else {
1120 if (urb->actual_length == 0) {
1121 pipe_irq_disable(r8a66597, td->pipenum);
1122 pipe_setting(r8a66597, td);
1123 pipe_stop(r8a66597, td->pipe);
1124 r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
1125
1126 if (td->pipe->pipetre) {
1127 r8a66597_write(r8a66597, TRCLR,
1128 td->pipe->pipetre);
1129 r8a66597_write(r8a66597,
1130 DIV_ROUND_UP
1131 (urb->transfer_buffer_length,
1132 td->maxpacket),
1133 td->pipe->pipetrn);
1134 r8a66597_bset(r8a66597, TRENB,
1135 td->pipe->pipetre);
1136 }
1137
1138 pipe_start(r8a66597, td->pipe);
1139 pipe_irq_enable(r8a66597, urb, td->pipenum);
1140 }
1141 }
1142 }
1143
1144 /* this function must be called with interrupt disabled */
1145 static void prepare_packet_write(struct r8a66597 *r8a66597,
1146 struct r8a66597_td *td)
1147 {
1148 u16 tmp;
1149 struct urb *urb = td->urb;
1150
1151 if (usb_pipecontrol(urb->pipe)) {
1152 pipe_stop(r8a66597, td->pipe);
1153 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
1154 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
1155 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1156 if (urb->actual_length == 0) {
1157 r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1158 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1159 }
1160 } else {
1161 if (urb->actual_length == 0)
1162 pipe_setting(r8a66597, td);
1163 if (td->pipe->pipetre)
1164 r8a66597_bclr(r8a66597, TRENB, td->pipe->pipetre);
1165 }
1166 r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
1167
1168 fifo_change_from_pipe(r8a66597, td->pipe);
1169 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1170 if (unlikely((tmp & FRDY) == 0))
1171 pipe_irq_enable(r8a66597, urb, td->pipenum);
1172 else
1173 packet_write(r8a66597, td->pipenum);
1174 pipe_start(r8a66597, td->pipe);
1175 }
1176
1177 /* this function must be called with interrupt disabled */
1178 static void prepare_status_packet(struct r8a66597 *r8a66597,
1179 struct r8a66597_td *td)
1180 {
1181 struct urb *urb = td->urb;
1182
1183 r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1184 pipe_stop(r8a66597, td->pipe);
1185
1186 if (urb->setup_packet[0] & USB_ENDPOINT_DIR_MASK) {
1187 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
1188 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
1189 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1190 r8a66597_write(r8a66597, ~BEMP0, BEMPSTS);
1191 r8a66597_write(r8a66597, BCLR | BVAL, CFIFOCTR);
1192 enable_irq_empty(r8a66597, 0);
1193 } else {
1194 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
1195 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
1196 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1197 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1198 enable_irq_ready(r8a66597, 0);
1199 }
1200 enable_irq_nrdy(r8a66597, 0);
1201 pipe_start(r8a66597, td->pipe);
1202 }
1203
1204 static int is_set_address(unsigned char *setup_packet)
1205 {
1206 if (((setup_packet[0] & USB_TYPE_MASK) == USB_TYPE_STANDARD) &&
1207 setup_packet[1] == USB_REQ_SET_ADDRESS)
1208 return 1;
1209 else
1210 return 0;
1211 }
1212
1213 /* this function must be called with interrupt disabled */
1214 static int start_transfer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1215 {
1216 BUG_ON(!td);
1217
1218 switch (td->type) {
1219 case USB_PID_SETUP:
1220 if (is_set_address(td->urb->setup_packet)) {
1221 td->set_address = 1;
1222 td->urb->setup_packet[2] = alloc_usb_address(r8a66597,
1223 td->urb);
1224 if (td->urb->setup_packet[2] == 0)
1225 return -EPIPE;
1226 }
1227 prepare_setup_packet(r8a66597, td);
1228 break;
1229 case USB_PID_IN:
1230 prepare_packet_read(r8a66597, td);
1231 break;
1232 case USB_PID_OUT:
1233 prepare_packet_write(r8a66597, td);
1234 break;
1235 case USB_PID_ACK:
1236 prepare_status_packet(r8a66597, td);
1237 break;
1238 default:
1239 printk(KERN_ERR "r8a66597: invalid type.\n");
1240 break;
1241 }
1242
1243 return 0;
1244 }
1245
1246 static int check_transfer_finish(struct r8a66597_td *td, struct urb *urb)
1247 {
1248 if (usb_pipeisoc(urb->pipe)) {
1249 if (urb->number_of_packets == td->iso_cnt)
1250 return 1;
1251 }
1252
1253 /* control or bulk or interrupt */
1254 if ((urb->transfer_buffer_length <= urb->actual_length) ||
1255 (td->short_packet) || (td->zero_packet))
1256 return 1;
1257
1258 return 0;
1259 }
1260
1261 /* this function must be called with interrupt disabled */
1262 static void set_td_timer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1263 {
1264 unsigned long time;
1265
1266 BUG_ON(!td);
1267
1268 if (!list_empty(&r8a66597->pipe_queue[td->pipenum]) &&
1269 !usb_pipecontrol(td->urb->pipe) && usb_pipein(td->urb->pipe)) {
1270 r8a66597->timeout_map |= 1 << td->pipenum;
1271 switch (usb_pipetype(td->urb->pipe)) {
1272 case PIPE_INTERRUPT:
1273 case PIPE_ISOCHRONOUS:
1274 time = 30;
1275 break;
1276 default:
1277 time = 300;
1278 break;
1279 }
1280
1281 mod_timer(&r8a66597->td_timer[td->pipenum],
1282 jiffies + msecs_to_jiffies(time));
1283 }
1284 }
1285
1286 /* this function must be called with interrupt disabled */
1287 static void finish_request(struct r8a66597 *r8a66597, struct r8a66597_td *td,
1288 u16 pipenum, struct urb *urb, int status)
1289 __releases(r8a66597->lock) __acquires(r8a66597->lock)
1290 {
1291 int restart = 0;
1292 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
1293
1294 r8a66597->timeout_map &= ~(1 << pipenum);
1295
1296 if (likely(td)) {
1297 if (td->set_address && (status != 0 || urb->unlinked))
1298 r8a66597->address_map &= ~(1 << urb->setup_packet[2]);
1299
1300 pipe_toggle_save(r8a66597, td->pipe, urb);
1301 list_del(&td->queue);
1302 kfree(td);
1303 }
1304
1305 if (!list_empty(&r8a66597->pipe_queue[pipenum]))
1306 restart = 1;
1307
1308 if (likely(urb)) {
1309 if (usb_pipeisoc(urb->pipe))
1310 urb->start_frame = r8a66597_get_frame(hcd);
1311
1312 r8a66597_urb_done(r8a66597, urb, status);
1313 }
1314
1315 if (restart) {
1316 td = r8a66597_get_td(r8a66597, pipenum);
1317 if (unlikely(!td))
1318 return;
1319
1320 start_transfer(r8a66597, td);
1321 set_td_timer(r8a66597, td);
1322 }
1323 }
1324
1325 static void packet_read(struct r8a66597 *r8a66597, u16 pipenum)
1326 {
1327 u16 tmp;
1328 int rcv_len, bufsize, urb_len, size;
1329 u16 *buf;
1330 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1331 struct urb *urb;
1332 int finish = 0;
1333 int status = 0;
1334
1335 if (unlikely(!td))
1336 return;
1337 urb = td->urb;
1338
1339 fifo_change_from_pipe(r8a66597, td->pipe);
1340 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1341 if (unlikely((tmp & FRDY) == 0)) {
1342 pipe_stop(r8a66597, td->pipe);
1343 pipe_irq_disable(r8a66597, pipenum);
1344 printk(KERN_ERR "r8a66597: in fifo not ready (%d)\n", pipenum);
1345 finish_request(r8a66597, td, pipenum, td->urb, -EPIPE);
1346 return;
1347 }
1348
1349 /* prepare parameters */
1350 rcv_len = tmp & DTLN;
1351 if (usb_pipeisoc(urb->pipe)) {
1352 buf = (u16 *)(urb->transfer_buffer +
1353 urb->iso_frame_desc[td->iso_cnt].offset);
1354 urb_len = urb->iso_frame_desc[td->iso_cnt].length;
1355 } else {
1356 buf = (void *)urb->transfer_buffer + urb->actual_length;
1357 urb_len = urb->transfer_buffer_length - urb->actual_length;
1358 }
1359 bufsize = min(urb_len, (int) td->maxpacket);
1360 if (rcv_len <= bufsize) {
1361 size = rcv_len;
1362 } else {
1363 size = bufsize;
1364 status = -EOVERFLOW;
1365 finish = 1;
1366 }
1367
1368 /* update parameters */
1369 urb->actual_length += size;
1370 if (rcv_len == 0)
1371 td->zero_packet = 1;
1372 if (rcv_len < bufsize) {
1373 td->short_packet = 1;
1374 }
1375 if (usb_pipeisoc(urb->pipe)) {
1376 urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1377 urb->iso_frame_desc[td->iso_cnt].status = status;
1378 td->iso_cnt++;
1379 finish = 0;
1380 }
1381
1382 /* check transfer finish */
1383 if (finish || check_transfer_finish(td, urb)) {
1384 pipe_stop(r8a66597, td->pipe);
1385 pipe_irq_disable(r8a66597, pipenum);
1386 finish = 1;
1387 }
1388
1389 /* read fifo */
1390 if (urb->transfer_buffer) {
1391 if (size == 0)
1392 r8a66597_write(r8a66597, BCLR, td->pipe->fifoctr);
1393 else
1394 r8a66597_read_fifo(r8a66597, td->pipe->fifoaddr,
1395 buf, size);
1396 }
1397
1398 if (finish && pipenum != 0)
1399 finish_request(r8a66597, td, pipenum, urb, status);
1400 }
1401
1402 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum)
1403 {
1404 u16 tmp;
1405 int bufsize, size;
1406 u16 *buf;
1407 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1408 struct urb *urb;
1409
1410 if (unlikely(!td))
1411 return;
1412 urb = td->urb;
1413
1414 fifo_change_from_pipe(r8a66597, td->pipe);
1415 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1416 if (unlikely((tmp & FRDY) == 0)) {
1417 pipe_stop(r8a66597, td->pipe);
1418 pipe_irq_disable(r8a66597, pipenum);
1419 printk(KERN_ERR "r8a66597: out fifo not ready (%d)\n", pipenum);
1420 finish_request(r8a66597, td, pipenum, urb, -EPIPE);
1421 return;
1422 }
1423
1424 /* prepare parameters */
1425 bufsize = td->maxpacket;
1426 if (usb_pipeisoc(urb->pipe)) {
1427 buf = (u16 *)(urb->transfer_buffer +
1428 urb->iso_frame_desc[td->iso_cnt].offset);
1429 size = min(bufsize,
1430 (int)urb->iso_frame_desc[td->iso_cnt].length);
1431 } else {
1432 buf = (u16 *)(urb->transfer_buffer + urb->actual_length);
1433 size = min_t(u32, bufsize,
1434 urb->transfer_buffer_length - urb->actual_length);
1435 }
1436
1437 /* write fifo */
1438 if (pipenum > 0)
1439 r8a66597_write(r8a66597, ~(1 << pipenum), BEMPSTS);
1440 if (urb->transfer_buffer) {
1441 r8a66597_write_fifo(r8a66597, td->pipe->fifoaddr, buf, size);
1442 if (!usb_pipebulk(urb->pipe) || td->maxpacket != size)
1443 r8a66597_write(r8a66597, BVAL, td->pipe->fifoctr);
1444 }
1445
1446 /* update parameters */
1447 urb->actual_length += size;
1448 if (usb_pipeisoc(urb->pipe)) {
1449 urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1450 urb->iso_frame_desc[td->iso_cnt].status = 0;
1451 td->iso_cnt++;
1452 }
1453
1454 /* check transfer finish */
1455 if (check_transfer_finish(td, urb)) {
1456 disable_irq_ready(r8a66597, pipenum);
1457 enable_irq_empty(r8a66597, pipenum);
1458 if (!usb_pipeisoc(urb->pipe))
1459 enable_irq_nrdy(r8a66597, pipenum);
1460 } else
1461 pipe_irq_enable(r8a66597, urb, pipenum);
1462 }
1463
1464
1465 static void check_next_phase(struct r8a66597 *r8a66597, int status)
1466 {
1467 struct r8a66597_td *td = r8a66597_get_td(r8a66597, 0);
1468 struct urb *urb;
1469 u8 finish = 0;
1470
1471 if (unlikely(!td))
1472 return;
1473 urb = td->urb;
1474
1475 switch (td->type) {
1476 case USB_PID_IN:
1477 case USB_PID_OUT:
1478 if (check_transfer_finish(td, urb))
1479 td->type = USB_PID_ACK;
1480 break;
1481 case USB_PID_SETUP:
1482 if (urb->transfer_buffer_length == urb->actual_length)
1483 td->type = USB_PID_ACK;
1484 else if (usb_pipeout(urb->pipe))
1485 td->type = USB_PID_OUT;
1486 else
1487 td->type = USB_PID_IN;
1488 break;
1489 case USB_PID_ACK:
1490 finish = 1;
1491 break;
1492 }
1493
1494 if (finish || status != 0 || urb->unlinked)
1495 finish_request(r8a66597, td, 0, urb, status);
1496 else
1497 start_transfer(r8a66597, td);
1498 }
1499
1500 static int get_urb_error(struct r8a66597 *r8a66597, u16 pipenum)
1501 {
1502 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1503
1504 if (td) {
1505 u16 pid = r8a66597_read(r8a66597, td->pipe->pipectr) & PID;
1506
1507 if (pid == PID_NAK)
1508 return -ECONNRESET;
1509 else
1510 return -EPIPE;
1511 }
1512 return 0;
1513 }
1514
1515 static void irq_pipe_ready(struct r8a66597 *r8a66597)
1516 {
1517 u16 check;
1518 u16 pipenum;
1519 u16 mask;
1520 struct r8a66597_td *td;
1521
1522 mask = r8a66597_read(r8a66597, BRDYSTS)
1523 & r8a66597_read(r8a66597, BRDYENB);
1524 r8a66597_write(r8a66597, ~mask, BRDYSTS);
1525 if (mask & BRDY0) {
1526 td = r8a66597_get_td(r8a66597, 0);
1527 if (td && td->type == USB_PID_IN)
1528 packet_read(r8a66597, 0);
1529 else
1530 pipe_irq_disable(r8a66597, 0);
1531 check_next_phase(r8a66597, 0);
1532 }
1533
1534 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1535 check = 1 << pipenum;
1536 if (mask & check) {
1537 td = r8a66597_get_td(r8a66597, pipenum);
1538 if (unlikely(!td))
1539 continue;
1540
1541 if (td->type == USB_PID_IN)
1542 packet_read(r8a66597, pipenum);
1543 else if (td->type == USB_PID_OUT)
1544 packet_write(r8a66597, pipenum);
1545 }
1546 }
1547 }
1548
1549 static void irq_pipe_empty(struct r8a66597 *r8a66597)
1550 {
1551 u16 tmp;
1552 u16 check;
1553 u16 pipenum;
1554 u16 mask;
1555 struct r8a66597_td *td;
1556
1557 mask = r8a66597_read(r8a66597, BEMPSTS)
1558 & r8a66597_read(r8a66597, BEMPENB);
1559 r8a66597_write(r8a66597, ~mask, BEMPSTS);
1560 if (mask & BEMP0) {
1561 cfifo_change(r8a66597, 0);
1562 td = r8a66597_get_td(r8a66597, 0);
1563 if (td && td->type != USB_PID_OUT)
1564 disable_irq_empty(r8a66597, 0);
1565 check_next_phase(r8a66597, 0);
1566 }
1567
1568 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1569 check = 1 << pipenum;
1570 if (mask & check) {
1571 struct r8a66597_td *td;
1572 td = r8a66597_get_td(r8a66597, pipenum);
1573 if (unlikely(!td))
1574 continue;
1575
1576 tmp = r8a66597_read(r8a66597, td->pipe->pipectr);
1577 if ((tmp & INBUFM) == 0) {
1578 disable_irq_empty(r8a66597, pipenum);
1579 pipe_irq_disable(r8a66597, pipenum);
1580 finish_request(r8a66597, td, pipenum, td->urb,
1581 0);
1582 }
1583 }
1584 }
1585 }
1586
1587 static void irq_pipe_nrdy(struct r8a66597 *r8a66597)
1588 {
1589 u16 check;
1590 u16 pipenum;
1591 u16 mask;
1592 int status;
1593
1594 mask = r8a66597_read(r8a66597, NRDYSTS)
1595 & r8a66597_read(r8a66597, NRDYENB);
1596 r8a66597_write(r8a66597, ~mask, NRDYSTS);
1597 if (mask & NRDY0) {
1598 cfifo_change(r8a66597, 0);
1599 status = get_urb_error(r8a66597, 0);
1600 pipe_irq_disable(r8a66597, 0);
1601 check_next_phase(r8a66597, status);
1602 }
1603
1604 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1605 check = 1 << pipenum;
1606 if (mask & check) {
1607 struct r8a66597_td *td;
1608 td = r8a66597_get_td(r8a66597, pipenum);
1609 if (unlikely(!td))
1610 continue;
1611
1612 status = get_urb_error(r8a66597, pipenum);
1613 pipe_irq_disable(r8a66597, pipenum);
1614 pipe_stop(r8a66597, td->pipe);
1615 finish_request(r8a66597, td, pipenum, td->urb, status);
1616 }
1617 }
1618 }
1619
1620 static irqreturn_t r8a66597_irq(struct usb_hcd *hcd)
1621 {
1622 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1623 u16 intsts0, intsts1, intsts2;
1624 u16 intenb0, intenb1, intenb2;
1625 u16 mask0, mask1, mask2;
1626 int status;
1627
1628 spin_lock(&r8a66597->lock);
1629
1630 intsts0 = r8a66597_read(r8a66597, INTSTS0);
1631 intsts1 = r8a66597_read(r8a66597, INTSTS1);
1632 intsts2 = r8a66597_read(r8a66597, INTSTS2);
1633 intenb0 = r8a66597_read(r8a66597, INTENB0);
1634 intenb1 = r8a66597_read(r8a66597, INTENB1);
1635 intenb2 = r8a66597_read(r8a66597, INTENB2);
1636
1637 mask2 = intsts2 & intenb2;
1638 mask1 = intsts1 & intenb1;
1639 mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY);
1640 if (mask2) {
1641 if (mask2 & ATTCH) {
1642 r8a66597_write(r8a66597, ~ATTCH, INTSTS2);
1643 r8a66597_bclr(r8a66597, ATTCHE, INTENB2);
1644
1645 /* start usb bus sampling */
1646 start_root_hub_sampling(r8a66597, 1, 1);
1647 }
1648 if (mask2 & DTCH) {
1649 r8a66597_write(r8a66597, ~DTCH, INTSTS2);
1650 r8a66597_bclr(r8a66597, DTCHE, INTENB2);
1651 r8a66597_usb_disconnect(r8a66597, 1);
1652 }
1653 if (mask2 & BCHG) {
1654 r8a66597_write(r8a66597, ~BCHG, INTSTS2);
1655 r8a66597_bclr(r8a66597, BCHGE, INTENB2);
1656 usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597));
1657 }
1658 }
1659
1660 if (mask1) {
1661 if (mask1 & ATTCH) {
1662 r8a66597_write(r8a66597, ~ATTCH, INTSTS1);
1663 r8a66597_bclr(r8a66597, ATTCHE, INTENB1);
1664
1665 /* start usb bus sampling */
1666 start_root_hub_sampling(r8a66597, 0, 1);
1667 }
1668 if (mask1 & DTCH) {
1669 r8a66597_write(r8a66597, ~DTCH, INTSTS1);
1670 r8a66597_bclr(r8a66597, DTCHE, INTENB1);
1671 r8a66597_usb_disconnect(r8a66597, 0);
1672 }
1673 if (mask1 & BCHG) {
1674 r8a66597_write(r8a66597, ~BCHG, INTSTS1);
1675 r8a66597_bclr(r8a66597, BCHGE, INTENB1);
1676 usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597));
1677 }
1678
1679 if (mask1 & SIGN) {
1680 r8a66597_write(r8a66597, ~SIGN, INTSTS1);
1681 status = get_urb_error(r8a66597, 0);
1682 check_next_phase(r8a66597, status);
1683 }
1684 if (mask1 & SACK) {
1685 r8a66597_write(r8a66597, ~SACK, INTSTS1);
1686 check_next_phase(r8a66597, 0);
1687 }
1688 }
1689 if (mask0) {
1690 if (mask0 & BRDY)
1691 irq_pipe_ready(r8a66597);
1692 if (mask0 & BEMP)
1693 irq_pipe_empty(r8a66597);
1694 if (mask0 & NRDY)
1695 irq_pipe_nrdy(r8a66597);
1696 }
1697
1698 spin_unlock(&r8a66597->lock);
1699 return IRQ_HANDLED;
1700 }
1701
1702 /* this function must be called with interrupt disabled */
1703 static void r8a66597_root_hub_control(struct r8a66597 *r8a66597, int port)
1704 {
1705 u16 tmp;
1706 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1707
1708 if (rh->port & (1 << USB_PORT_FEAT_RESET)) {
1709 unsigned long dvstctr_reg = get_dvstctr_reg(port);
1710
1711 tmp = r8a66597_read(r8a66597, dvstctr_reg);
1712 if ((tmp & USBRST) == USBRST) {
1713 r8a66597_mdfy(r8a66597, UACT, USBRST | UACT,
1714 dvstctr_reg);
1715 r8a66597_root_hub_start_polling(r8a66597);
1716 } else
1717 r8a66597_usb_connect(r8a66597, port);
1718 }
1719
1720 if (!(rh->port & (1 << USB_PORT_FEAT_CONNECTION))) {
1721 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port));
1722 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
1723 }
1724
1725 if (rh->scount > 0) {
1726 tmp = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
1727 if (tmp == rh->old_syssts) {
1728 rh->scount--;
1729 if (rh->scount == 0)
1730 r8a66597_check_syssts(r8a66597, port, tmp);
1731 else
1732 r8a66597_root_hub_start_polling(r8a66597);
1733 } else {
1734 rh->scount = R8A66597_MAX_SAMPLING;
1735 rh->old_syssts = tmp;
1736 r8a66597_root_hub_start_polling(r8a66597);
1737 }
1738 }
1739 }
1740
1741 static void r8a66597_interval_timer(unsigned long _r8a66597)
1742 {
1743 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1744 unsigned long flags;
1745 u16 pipenum;
1746 struct r8a66597_td *td;
1747
1748 spin_lock_irqsave(&r8a66597->lock, flags);
1749
1750 for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1751 if (!(r8a66597->interval_map & (1 << pipenum)))
1752 continue;
1753 if (timer_pending(&r8a66597->interval_timer[pipenum]))
1754 continue;
1755
1756 td = r8a66597_get_td(r8a66597, pipenum);
1757 if (td)
1758 start_transfer(r8a66597, td);
1759 }
1760
1761 spin_unlock_irqrestore(&r8a66597->lock, flags);
1762 }
1763
1764 static void r8a66597_td_timer(unsigned long _r8a66597)
1765 {
1766 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1767 unsigned long flags;
1768 u16 pipenum;
1769 struct r8a66597_td *td, *new_td = NULL;
1770 struct r8a66597_pipe *pipe;
1771
1772 spin_lock_irqsave(&r8a66597->lock, flags);
1773 for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1774 if (!(r8a66597->timeout_map & (1 << pipenum)))
1775 continue;
1776 if (timer_pending(&r8a66597->td_timer[pipenum]))
1777 continue;
1778
1779 td = r8a66597_get_td(r8a66597, pipenum);
1780 if (!td) {
1781 r8a66597->timeout_map &= ~(1 << pipenum);
1782 continue;
1783 }
1784
1785 if (td->urb->actual_length) {
1786 set_td_timer(r8a66597, td);
1787 break;
1788 }
1789
1790 pipe = td->pipe;
1791 pipe_stop(r8a66597, pipe);
1792
1793 new_td = td;
1794 do {
1795 list_move_tail(&new_td->queue,
1796 &r8a66597->pipe_queue[pipenum]);
1797 new_td = r8a66597_get_td(r8a66597, pipenum);
1798 if (!new_td) {
1799 new_td = td;
1800 break;
1801 }
1802 } while (td != new_td && td->address == new_td->address);
1803
1804 start_transfer(r8a66597, new_td);
1805
1806 if (td == new_td)
1807 r8a66597->timeout_map &= ~(1 << pipenum);
1808 else
1809 set_td_timer(r8a66597, new_td);
1810 break;
1811 }
1812 spin_unlock_irqrestore(&r8a66597->lock, flags);
1813 }
1814
1815 static void r8a66597_timer(unsigned long _r8a66597)
1816 {
1817 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1818 unsigned long flags;
1819 int port;
1820
1821 spin_lock_irqsave(&r8a66597->lock, flags);
1822
1823 for (port = 0; port < r8a66597->max_root_hub; port++)
1824 r8a66597_root_hub_control(r8a66597, port);
1825
1826 spin_unlock_irqrestore(&r8a66597->lock, flags);
1827 }
1828
1829 static int check_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
1830 {
1831 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
1832
1833 if (dev && dev->address && dev->state != USB_STATE_CONFIGURED &&
1834 (urb->dev->state == USB_STATE_CONFIGURED))
1835 return 1;
1836 else
1837 return 0;
1838 }
1839
1840 static int r8a66597_start(struct usb_hcd *hcd)
1841 {
1842 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1843
1844 hcd->state = HC_STATE_RUNNING;
1845 return enable_controller(r8a66597);
1846 }
1847
1848 static void r8a66597_stop(struct usb_hcd *hcd)
1849 {
1850 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1851
1852 disable_controller(r8a66597);
1853 }
1854
1855 static void set_address_zero(struct r8a66597 *r8a66597, struct urb *urb)
1856 {
1857 unsigned int usb_address = usb_pipedevice(urb->pipe);
1858 u16 root_port, hub_port;
1859
1860 if (usb_address == 0) {
1861 get_port_number(r8a66597, urb->dev->devpath,
1862 &root_port, &hub_port);
1863 set_devadd_reg(r8a66597, 0,
1864 get_r8a66597_usb_speed(urb->dev->speed),
1865 get_parent_r8a66597_address(r8a66597, urb->dev),
1866 hub_port, root_port);
1867 }
1868 }
1869
1870 static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597,
1871 struct urb *urb,
1872 struct usb_host_endpoint *hep)
1873 {
1874 struct r8a66597_td *td;
1875 u16 pipenum;
1876
1877 td = kzalloc(sizeof(struct r8a66597_td), GFP_ATOMIC);
1878 if (td == NULL)
1879 return NULL;
1880
1881 pipenum = r8a66597_get_pipenum(urb, hep);
1882 td->pipenum = pipenum;
1883 td->pipe = hep->hcpriv;
1884 td->urb = urb;
1885 td->address = get_urb_to_r8a66597_addr(r8a66597, urb);
1886 td->maxpacket = usb_maxpacket(urb->dev, urb->pipe,
1887 !usb_pipein(urb->pipe));
1888 if (usb_pipecontrol(urb->pipe))
1889 td->type = USB_PID_SETUP;
1890 else if (usb_pipein(urb->pipe))
1891 td->type = USB_PID_IN;
1892 else
1893 td->type = USB_PID_OUT;
1894 INIT_LIST_HEAD(&td->queue);
1895
1896 return td;
1897 }
1898
1899 static int r8a66597_urb_enqueue(struct usb_hcd *hcd,
1900 struct urb *urb,
1901 gfp_t mem_flags)
1902 {
1903 struct usb_host_endpoint *hep = urb->ep;
1904 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1905 struct r8a66597_td *td = NULL;
1906 int ret, request = 0;
1907 unsigned long flags;
1908
1909 spin_lock_irqsave(&r8a66597->lock, flags);
1910 if (!get_urb_to_r8a66597_dev(r8a66597, urb)) {
1911 ret = -ENODEV;
1912 goto error_not_linked;
1913 }
1914
1915 ret = usb_hcd_link_urb_to_ep(hcd, urb);
1916 if (ret)
1917 goto error_not_linked;
1918
1919 if (!hep->hcpriv) {
1920 hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe),
1921 GFP_ATOMIC);
1922 if (!hep->hcpriv) {
1923 ret = -ENOMEM;
1924 goto error;
1925 }
1926 set_pipe_reg_addr(hep->hcpriv, R8A66597_PIPE_NO_DMA);
1927 if (usb_pipeendpoint(urb->pipe))
1928 init_pipe_info(r8a66597, urb, hep, &hep->desc);
1929 }
1930
1931 if (unlikely(check_pipe_config(r8a66597, urb)))
1932 init_pipe_config(r8a66597, urb);
1933
1934 set_address_zero(r8a66597, urb);
1935 td = r8a66597_make_td(r8a66597, urb, hep);
1936 if (td == NULL) {
1937 ret = -ENOMEM;
1938 goto error;
1939 }
1940 if (list_empty(&r8a66597->pipe_queue[td->pipenum]))
1941 request = 1;
1942 list_add_tail(&td->queue, &r8a66597->pipe_queue[td->pipenum]);
1943 urb->hcpriv = td;
1944
1945 if (request) {
1946 if (td->pipe->info.timer_interval) {
1947 r8a66597->interval_map |= 1 << td->pipenum;
1948 mod_timer(&r8a66597->interval_timer[td->pipenum],
1949 jiffies + msecs_to_jiffies(
1950 td->pipe->info.timer_interval));
1951 } else {
1952 ret = start_transfer(r8a66597, td);
1953 if (ret < 0) {
1954 list_del(&td->queue);
1955 kfree(td);
1956 }
1957 }
1958 } else
1959 set_td_timer(r8a66597, td);
1960
1961 error:
1962 if (ret)
1963 usb_hcd_unlink_urb_from_ep(hcd, urb);
1964 error_not_linked:
1965 spin_unlock_irqrestore(&r8a66597->lock, flags);
1966 return ret;
1967 }
1968
1969 static int r8a66597_urb_dequeue(struct usb_hcd *hcd, struct urb *urb,
1970 int status)
1971 {
1972 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1973 struct r8a66597_td *td;
1974 unsigned long flags;
1975 int rc;
1976
1977 spin_lock_irqsave(&r8a66597->lock, flags);
1978 rc = usb_hcd_check_unlink_urb(hcd, urb, status);
1979 if (rc)
1980 goto done;
1981
1982 if (urb->hcpriv) {
1983 td = urb->hcpriv;
1984 pipe_stop(r8a66597, td->pipe);
1985 pipe_irq_disable(r8a66597, td->pipenum);
1986 disable_irq_empty(r8a66597, td->pipenum);
1987 finish_request(r8a66597, td, td->pipenum, urb, status);
1988 }
1989 done:
1990 spin_unlock_irqrestore(&r8a66597->lock, flags);
1991 return rc;
1992 }
1993
1994 static void r8a66597_endpoint_disable(struct usb_hcd *hcd,
1995 struct usb_host_endpoint *hep)
1996 {
1997 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1998 struct r8a66597_pipe *pipe = (struct r8a66597_pipe *)hep->hcpriv;
1999 struct r8a66597_td *td;
2000 struct urb *urb = NULL;
2001 u16 pipenum;
2002 unsigned long flags;
2003
2004 if (pipe == NULL)
2005 return;
2006 pipenum = pipe->info.pipenum;
2007
2008 if (pipenum == 0) {
2009 kfree(hep->hcpriv);
2010 hep->hcpriv = NULL;
2011 return;
2012 }
2013
2014 spin_lock_irqsave(&r8a66597->lock, flags);
2015 pipe_stop(r8a66597, pipe);
2016 pipe_irq_disable(r8a66597, pipenum);
2017 disable_irq_empty(r8a66597, pipenum);
2018 td = r8a66597_get_td(r8a66597, pipenum);
2019 if (td)
2020 urb = td->urb;
2021 finish_request(r8a66597, td, pipenum, urb, -ESHUTDOWN);
2022 kfree(hep->hcpriv);
2023 hep->hcpriv = NULL;
2024 spin_unlock_irqrestore(&r8a66597->lock, flags);
2025 }
2026
2027 static int r8a66597_get_frame(struct usb_hcd *hcd)
2028 {
2029 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2030 return r8a66597_read(r8a66597, FRMNUM) & 0x03FF;
2031 }
2032
2033 static void collect_usb_address_map(struct usb_device *udev, unsigned long *map)
2034 {
2035 int chix;
2036
2037 if (udev->state == USB_STATE_CONFIGURED &&
2038 udev->parent && udev->parent->devnum > 1 &&
2039 udev->parent->descriptor.bDeviceClass == USB_CLASS_HUB)
2040 map[udev->devnum/32] |= (1 << (udev->devnum % 32));
2041
2042 for (chix = 0; chix < udev->maxchild; chix++) {
2043 struct usb_device *childdev = udev->children[chix];
2044
2045 if (childdev)
2046 collect_usb_address_map(childdev, map);
2047 }
2048 }
2049
2050 /* this function must be called with interrupt disabled */
2051 static struct r8a66597_device *get_r8a66597_device(struct r8a66597 *r8a66597,
2052 int addr)
2053 {
2054 struct r8a66597_device *dev;
2055 struct list_head *list = &r8a66597->child_device;
2056
2057 list_for_each_entry(dev, list, device_list) {
2058 if (dev->usb_address != addr)
2059 continue;
2060
2061 return dev;
2062 }
2063
2064 printk(KERN_ERR "r8a66597: get_r8a66597_device fail.(%d)\n", addr);
2065 return NULL;
2066 }
2067
2068 static void update_usb_address_map(struct r8a66597 *r8a66597,
2069 struct usb_device *root_hub,
2070 unsigned long *map)
2071 {
2072 int i, j, addr;
2073 unsigned long diff;
2074 unsigned long flags;
2075
2076 for (i = 0; i < 4; i++) {
2077 diff = r8a66597->child_connect_map[i] ^ map[i];
2078 if (!diff)
2079 continue;
2080
2081 for (j = 0; j < 32; j++) {
2082 if (!(diff & (1 << j)))
2083 continue;
2084
2085 addr = i * 32 + j;
2086 if (map[i] & (1 << j))
2087 set_child_connect_map(r8a66597, addr);
2088 else {
2089 struct r8a66597_device *dev;
2090
2091 spin_lock_irqsave(&r8a66597->lock, flags);
2092 dev = get_r8a66597_device(r8a66597, addr);
2093 disable_r8a66597_pipe_all(r8a66597, dev);
2094 free_usb_address(r8a66597, dev, 0);
2095 put_child_connect_map(r8a66597, addr);
2096 spin_unlock_irqrestore(&r8a66597->lock, flags);
2097 }
2098 }
2099 }
2100 }
2101
2102 static void r8a66597_check_detect_child(struct r8a66597 *r8a66597,
2103 struct usb_hcd *hcd)
2104 {
2105 struct usb_bus *bus;
2106 unsigned long now_map[4];
2107
2108 memset(now_map, 0, sizeof(now_map));
2109
2110 list_for_each_entry(bus, &usb_bus_list, bus_list) {
2111 if (!bus->root_hub)
2112 continue;
2113
2114 if (bus->busnum != hcd->self.busnum)
2115 continue;
2116
2117 collect_usb_address_map(bus->root_hub, now_map);
2118 update_usb_address_map(r8a66597, bus->root_hub, now_map);
2119 }
2120 }
2121
2122 static int r8a66597_hub_status_data(struct usb_hcd *hcd, char *buf)
2123 {
2124 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2125 unsigned long flags;
2126 int i;
2127
2128 r8a66597_check_detect_child(r8a66597, hcd);
2129
2130 spin_lock_irqsave(&r8a66597->lock, flags);
2131
2132 *buf = 0; /* initialize (no change) */
2133
2134 for (i = 0; i < r8a66597->max_root_hub; i++) {
2135 if (r8a66597->root_hub[i].port & 0xffff0000)
2136 *buf |= 1 << (i + 1);
2137 }
2138
2139 spin_unlock_irqrestore(&r8a66597->lock, flags);
2140
2141 return (*buf != 0);
2142 }
2143
2144 static void r8a66597_hub_descriptor(struct r8a66597 *r8a66597,
2145 struct usb_hub_descriptor *desc)
2146 {
2147 desc->bDescriptorType = 0x29;
2148 desc->bHubContrCurrent = 0;
2149 desc->bNbrPorts = r8a66597->max_root_hub;
2150 desc->bDescLength = 9;
2151 desc->bPwrOn2PwrGood = 0;
2152 desc->wHubCharacteristics = cpu_to_le16(0x0011);
2153 desc->bitmap[0] = ((1 << r8a66597->max_root_hub) - 1) << 1;
2154 desc->bitmap[1] = ~0;
2155 }
2156
2157 static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
2158 u16 wIndex, char *buf, u16 wLength)
2159 {
2160 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2161 int ret;
2162 int port = (wIndex & 0x00FF) - 1;
2163 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
2164 unsigned long flags;
2165
2166 ret = 0;
2167
2168 spin_lock_irqsave(&r8a66597->lock, flags);
2169 switch (typeReq) {
2170 case ClearHubFeature:
2171 case SetHubFeature:
2172 switch (wValue) {
2173 case C_HUB_OVER_CURRENT:
2174 case C_HUB_LOCAL_POWER:
2175 break;
2176 default:
2177 goto error;
2178 }
2179 break;
2180 case ClearPortFeature:
2181 if (wIndex > r8a66597->max_root_hub)
2182 goto error;
2183 if (wLength != 0)
2184 goto error;
2185
2186 switch (wValue) {
2187 case USB_PORT_FEAT_ENABLE:
2188 rh->port &= ~(1 << USB_PORT_FEAT_POWER);
2189 break;
2190 case USB_PORT_FEAT_SUSPEND:
2191 break;
2192 case USB_PORT_FEAT_POWER:
2193 r8a66597_port_power(r8a66597, port, 0);
2194 break;
2195 case USB_PORT_FEAT_C_ENABLE:
2196 case USB_PORT_FEAT_C_SUSPEND:
2197 case USB_PORT_FEAT_C_CONNECTION:
2198 case USB_PORT_FEAT_C_OVER_CURRENT:
2199 case USB_PORT_FEAT_C_RESET:
2200 break;
2201 default:
2202 goto error;
2203 }
2204 rh->port &= ~(1 << wValue);
2205 break;
2206 case GetHubDescriptor:
2207 r8a66597_hub_descriptor(r8a66597,
2208 (struct usb_hub_descriptor *)buf);
2209 break;
2210 case GetHubStatus:
2211 *buf = 0x00;
2212 break;
2213 case GetPortStatus:
2214 if (wIndex > r8a66597->max_root_hub)
2215 goto error;
2216 *(__le32 *)buf = cpu_to_le32(rh->port);
2217 break;
2218 case SetPortFeature:
2219 if (wIndex > r8a66597->max_root_hub)
2220 goto error;
2221 if (wLength != 0)
2222 goto error;
2223
2224 switch (wValue) {
2225 case USB_PORT_FEAT_SUSPEND:
2226 break;
2227 case USB_PORT_FEAT_POWER:
2228 r8a66597_port_power(r8a66597, port, 1);
2229 rh->port |= (1 << USB_PORT_FEAT_POWER);
2230 break;
2231 case USB_PORT_FEAT_RESET: {
2232 struct r8a66597_device *dev = rh->dev;
2233
2234 rh->port |= (1 << USB_PORT_FEAT_RESET);
2235
2236 disable_r8a66597_pipe_all(r8a66597, dev);
2237 free_usb_address(r8a66597, dev, 1);
2238
2239 r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT,
2240 get_dvstctr_reg(port));
2241 mod_timer(&r8a66597->rh_timer,
2242 jiffies + msecs_to_jiffies(50));
2243 }
2244 break;
2245 default:
2246 goto error;
2247 }
2248 rh->port |= 1 << wValue;
2249 break;
2250 default:
2251 error:
2252 ret = -EPIPE;
2253 break;
2254 }
2255
2256 spin_unlock_irqrestore(&r8a66597->lock, flags);
2257 return ret;
2258 }
2259
2260 #if defined(CONFIG_PM)
2261 static int r8a66597_bus_suspend(struct usb_hcd *hcd)
2262 {
2263 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2264 int port;
2265
2266 dbg("%s", __func__);
2267
2268 for (port = 0; port < r8a66597->max_root_hub; port++) {
2269 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
2270 unsigned long dvstctr_reg = get_dvstctr_reg(port);
2271
2272 if (!(rh->port & (1 << USB_PORT_FEAT_ENABLE)))
2273 continue;
2274
2275 dbg("suspend port = %d", port);
2276 r8a66597_bclr(r8a66597, UACT, dvstctr_reg); /* suspend */
2277 rh->port |= 1 << USB_PORT_FEAT_SUSPEND;
2278
2279 if (rh->dev->udev->do_remote_wakeup) {
2280 msleep(3); /* waiting last SOF */
2281 r8a66597_bset(r8a66597, RWUPE, dvstctr_reg);
2282 r8a66597_write(r8a66597, ~BCHG, get_intsts_reg(port));
2283 r8a66597_bset(r8a66597, BCHGE, get_intenb_reg(port));
2284 }
2285 }
2286
2287 r8a66597->bus_suspended = 1;
2288
2289 return 0;
2290 }
2291
2292 static int r8a66597_bus_resume(struct usb_hcd *hcd)
2293 {
2294 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2295 int port;
2296
2297 dbg("%s", __func__);
2298
2299 for (port = 0; port < r8a66597->max_root_hub; port++) {
2300 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
2301 unsigned long dvstctr_reg = get_dvstctr_reg(port);
2302
2303 if (!(rh->port & (1 << USB_PORT_FEAT_SUSPEND)))
2304 continue;
2305
2306 dbg("resume port = %d", port);
2307 rh->port &= ~(1 << USB_PORT_FEAT_SUSPEND);
2308 rh->port |= 1 << USB_PORT_FEAT_C_SUSPEND;
2309 r8a66597_mdfy(r8a66597, RESUME, RESUME | UACT, dvstctr_reg);
2310 msleep(50);
2311 r8a66597_mdfy(r8a66597, UACT, RESUME | UACT, dvstctr_reg);
2312 }
2313
2314 return 0;
2315
2316 }
2317 #else
2318 #define r8a66597_bus_suspend NULL
2319 #define r8a66597_bus_resume NULL
2320 #endif
2321
2322 static struct hc_driver r8a66597_hc_driver = {
2323 .description = hcd_name,
2324 .hcd_priv_size = sizeof(struct r8a66597),
2325 .irq = r8a66597_irq,
2326
2327 /*
2328 * generic hardware linkage
2329 */
2330 .flags = HCD_USB2,
2331
2332 .start = r8a66597_start,
2333 .stop = r8a66597_stop,
2334
2335 /*
2336 * managing i/o requests and associated device resources
2337 */
2338 .urb_enqueue = r8a66597_urb_enqueue,
2339 .urb_dequeue = r8a66597_urb_dequeue,
2340 .endpoint_disable = r8a66597_endpoint_disable,
2341
2342 /*
2343 * periodic schedule support
2344 */
2345 .get_frame_number = r8a66597_get_frame,
2346
2347 /*
2348 * root hub support
2349 */
2350 .hub_status_data = r8a66597_hub_status_data,
2351 .hub_control = r8a66597_hub_control,
2352 .bus_suspend = r8a66597_bus_suspend,
2353 .bus_resume = r8a66597_bus_resume,
2354 };
2355
2356 #if defined(CONFIG_PM)
2357 static int r8a66597_suspend(struct device *dev)
2358 {
2359 struct r8a66597 *r8a66597 = dev_get_drvdata(dev);
2360 int port;
2361
2362 dbg("%s", __func__);
2363
2364 disable_controller(r8a66597);
2365
2366 for (port = 0; port < r8a66597->max_root_hub; port++) {
2367 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
2368
2369 rh->port = 0x00000000;
2370 }
2371
2372 return 0;
2373 }
2374
2375 static int r8a66597_resume(struct device *dev)
2376 {
2377 struct r8a66597 *r8a66597 = dev_get_drvdata(dev);
2378 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
2379
2380 dbg("%s", __func__);
2381
2382 enable_controller(r8a66597);
2383 usb_root_hub_lost_power(hcd->self.root_hub);
2384
2385 return 0;
2386 }
2387
2388 static const struct dev_pm_ops r8a66597_dev_pm_ops = {
2389 .suspend = r8a66597_suspend,
2390 .resume = r8a66597_resume,
2391 .poweroff = r8a66597_suspend,
2392 .restore = r8a66597_resume,
2393 };
2394
2395 #define R8A66597_DEV_PM_OPS (&r8a66597_dev_pm_ops)
2396 #else /* if defined(CONFIG_PM) */
2397 #define R8A66597_DEV_PM_OPS NULL
2398 #endif
2399
2400 static int __init_or_module r8a66597_remove(struct platform_device *pdev)
2401 {
2402 struct r8a66597 *r8a66597 = dev_get_drvdata(&pdev->dev);
2403 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
2404
2405 del_timer_sync(&r8a66597->rh_timer);
2406 usb_remove_hcd(hcd);
2407 iounmap((void *)r8a66597->reg);
2408 #ifdef CONFIG_HAVE_CLK
2409 if (r8a66597->pdata->on_chip)
2410 clk_put(r8a66597->clk);
2411 #endif
2412 usb_put_hcd(hcd);
2413 return 0;
2414 }
2415
2416 static int __devinit r8a66597_probe(struct platform_device *pdev)
2417 {
2418 #ifdef CONFIG_HAVE_CLK
2419 char clk_name[8];
2420 #endif
2421 struct resource *res = NULL, *ires;
2422 int irq = -1;
2423 void __iomem *reg = NULL;
2424 struct usb_hcd *hcd = NULL;
2425 struct r8a66597 *r8a66597;
2426 int ret = 0;
2427 int i;
2428 unsigned long irq_trigger;
2429
2430 if (pdev->dev.dma_mask) {
2431 ret = -EINVAL;
2432 dev_err(&pdev->dev, "dma not supported\n");
2433 goto clean_up;
2434 }
2435
2436 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2437 if (!res) {
2438 ret = -ENODEV;
2439 dev_err(&pdev->dev, "platform_get_resource error.\n");
2440 goto clean_up;
2441 }
2442
2443 ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
2444 if (!ires) {
2445 ret = -ENODEV;
2446 dev_err(&pdev->dev,
2447 "platform_get_resource IORESOURCE_IRQ error.\n");
2448 goto clean_up;
2449 }
2450
2451 irq = ires->start;
2452 irq_trigger = ires->flags & IRQF_TRIGGER_MASK;
2453
2454 reg = ioremap(res->start, resource_size(res));
2455 if (reg == NULL) {
2456 ret = -ENOMEM;
2457 dev_err(&pdev->dev, "ioremap error.\n");
2458 goto clean_up;
2459 }
2460
2461 if (pdev->dev.platform_data == NULL) {
2462 dev_err(&pdev->dev, "no platform data\n");
2463 ret = -ENODEV;
2464 goto clean_up;
2465 }
2466
2467 /* initialize hcd */
2468 hcd = usb_create_hcd(&r8a66597_hc_driver, &pdev->dev, (char *)hcd_name);
2469 if (!hcd) {
2470 ret = -ENOMEM;
2471 dev_err(&pdev->dev, "Failed to create hcd\n");
2472 goto clean_up;
2473 }
2474 r8a66597 = hcd_to_r8a66597(hcd);
2475 memset(r8a66597, 0, sizeof(struct r8a66597));
2476 dev_set_drvdata(&pdev->dev, r8a66597);
2477 r8a66597->pdata = pdev->dev.platform_data;
2478 r8a66597->irq_sense_low = irq_trigger == IRQF_TRIGGER_LOW;
2479
2480 if (r8a66597->pdata->on_chip) {
2481 #ifdef CONFIG_HAVE_CLK
2482 snprintf(clk_name, sizeof(clk_name), "usb%d", pdev->id);
2483 r8a66597->clk = clk_get(&pdev->dev, clk_name);
2484 if (IS_ERR(r8a66597->clk)) {
2485 dev_err(&pdev->dev, "cannot get clock \"%s\"\n",
2486 clk_name);
2487 ret = PTR_ERR(r8a66597->clk);
2488 goto clean_up2;
2489 }
2490 #endif
2491 r8a66597->max_root_hub = 1;
2492 } else
2493 r8a66597->max_root_hub = 2;
2494
2495 spin_lock_init(&r8a66597->lock);
2496 init_timer(&r8a66597->rh_timer);
2497 r8a66597->rh_timer.function = r8a66597_timer;
2498 r8a66597->rh_timer.data = (unsigned long)r8a66597;
2499 r8a66597->reg = (unsigned long)reg;
2500
2501 /* make sure no interrupts are pending */
2502 ret = r8a66597_clock_enable(r8a66597);
2503 if (ret < 0)
2504 goto clean_up3;
2505 disable_controller(r8a66597);
2506
2507 for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) {
2508 INIT_LIST_HEAD(&r8a66597->pipe_queue[i]);
2509 init_timer(&r8a66597->td_timer[i]);
2510 r8a66597->td_timer[i].function = r8a66597_td_timer;
2511 r8a66597->td_timer[i].data = (unsigned long)r8a66597;
2512 setup_timer(&r8a66597->interval_timer[i],
2513 r8a66597_interval_timer,
2514 (unsigned long)r8a66597);
2515 }
2516 INIT_LIST_HEAD(&r8a66597->child_device);
2517
2518 hcd->rsrc_start = res->start;
2519
2520 ret = usb_add_hcd(hcd, irq, IRQF_DISABLED | irq_trigger);
2521 if (ret != 0) {
2522 dev_err(&pdev->dev, "Failed to add hcd\n");
2523 goto clean_up3;
2524 }
2525
2526 return 0;
2527
2528 clean_up3:
2529 #ifdef CONFIG_HAVE_CLK
2530 if (r8a66597->pdata->on_chip)
2531 clk_put(r8a66597->clk);
2532 clean_up2:
2533 #endif
2534 usb_put_hcd(hcd);
2535
2536 clean_up:
2537 if (reg)
2538 iounmap(reg);
2539
2540 return ret;
2541 }
2542
2543 static struct platform_driver r8a66597_driver = {
2544 .probe = r8a66597_probe,
2545 .remove = r8a66597_remove,
2546 .driver = {
2547 .name = (char *) hcd_name,
2548 .owner = THIS_MODULE,
2549 .pm = R8A66597_DEV_PM_OPS,
2550 },
2551 };
2552
2553 static int __init r8a66597_init(void)
2554 {
2555 if (usb_disabled())
2556 return -ENODEV;
2557
2558 printk(KERN_INFO KBUILD_MODNAME ": driver %s, %s\n", hcd_name,
2559 DRIVER_VERSION);
2560 return platform_driver_register(&r8a66597_driver);
2561 }
2562 module_init(r8a66597_init);
2563
2564 static void __exit r8a66597_cleanup(void)
2565 {
2566 platform_driver_unregister(&r8a66597_driver);
2567 }
2568 module_exit(r8a66597_cleanup);
2569
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