Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
r8a66597-hcd.c
Go to the documentation of this file.
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 <[email protected]>
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/usb/hcd.h>
37 #include <linux/platform_device.h>
38 #include <linux/io.h>
39 #include <linux/mm.h>
40 #include <linux/irq.h>
41 #include <linux/slab.h>
42 #include <asm/cacheflush.h>
43 
44 #include "r8a66597.h"
45 
46 MODULE_DESCRIPTION("R8A66597 USB Host Controller Driver");
47 MODULE_LICENSE("GPL");
48 MODULE_AUTHOR("Yoshihiro Shimoda");
49 MODULE_ALIAS("platform:r8a66597_hcd");
50 
51 #define DRIVER_VERSION "2009-05-26"
52 
53 static const char hcd_name[] = "r8a66597_hcd";
54 
55 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum);
56 static int r8a66597_get_frame(struct usb_hcd *hcd);
57 
58 /* this function must be called with interrupt disabled */
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, INTENB0);
66  r8a66597_bset(r8a66597, 1 << pipenum, reg);
67  r8a66597_write(r8a66597, tmp, INTENB0);
68 }
69 
70 /* this function must be called with interrupt disabled */
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, INTENB0);
78  r8a66597_bclr(r8a66597, 1 << pipenum, reg);
79  r8a66597_write(r8a66597, tmp, INTENB0);
80 }
81 
82 static void set_devadd_reg(struct r8a66597 *r8a66597, u8 r8a66597_address,
83  u16 usbspd, u8 upphub, u8 hubport, int port)
84 {
85  u16 val;
86  unsigned long devadd_reg = get_devadd_addr(r8a66597_address);
87 
88  val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001);
89  r8a66597_write(r8a66597, val, devadd_reg);
90 }
91 
92 static int r8a66597_clock_enable(struct r8a66597 *r8a66597)
93 {
94  u16 tmp;
95  int i = 0;
96 
97  if (r8a66597->pdata->on_chip) {
98  clk_enable(r8a66597->clk);
99  do {
100  r8a66597_write(r8a66597, SCKE, SYSCFG0);
101  tmp = r8a66597_read(r8a66597, SYSCFG0);
102  if (i++ > 1000) {
103  printk(KERN_ERR "r8a66597: reg access fail.\n");
104  return -ENXIO;
105  }
106  } while ((tmp & SCKE) != SCKE);
107  r8a66597_write(r8a66597, 0x04, 0x02);
108  } else {
109  do {
110  r8a66597_write(r8a66597, USBE, SYSCFG0);
111  tmp = r8a66597_read(r8a66597, SYSCFG0);
112  if (i++ > 1000) {
113  printk(KERN_ERR "r8a66597: reg access fail.\n");
114  return -ENXIO;
115  }
116  } while ((tmp & USBE) != USBE);
117  r8a66597_bclr(r8a66597, USBE, SYSCFG0);
118  r8a66597_mdfy(r8a66597, get_xtal_from_pdata(r8a66597->pdata),
119  XTAL, SYSCFG0);
120 
121  i = 0;
122  r8a66597_bset(r8a66597, XCKE, SYSCFG0);
123  do {
124  msleep(1);
125  tmp = r8a66597_read(r8a66597, SYSCFG0);
126  if (i++ > 500) {
127  printk(KERN_ERR "r8a66597: reg access fail.\n");
128  return -ENXIO;
129  }
130  } while ((tmp & SCKE) != SCKE);
131  }
132 
133  return 0;
134 }
135 
136 static void r8a66597_clock_disable(struct r8a66597 *r8a66597)
137 {
138  r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
139  udelay(1);
140 
141  if (r8a66597->pdata->on_chip) {
142  clk_disable(r8a66597->clk);
143  } else {
144  r8a66597_bclr(r8a66597, PLLC, SYSCFG0);
145  r8a66597_bclr(r8a66597, XCKE, SYSCFG0);
146  r8a66597_bclr(r8a66597, USBE, SYSCFG0);
147  }
148 }
149 
150 static void r8a66597_enable_port(struct r8a66597 *r8a66597, int port)
151 {
152  u16 val;
153 
154  val = port ? DRPD : DCFM | DRPD;
155  r8a66597_bset(r8a66597, val, get_syscfg_reg(port));
156  r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port));
157 
158  r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, get_dmacfg_reg(port));
159  r8a66597_bclr(r8a66597, DTCHE, get_intenb_reg(port));
160  r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
161 }
162 
163 static void r8a66597_disable_port(struct r8a66597 *r8a66597, int port)
164 {
165  u16 val, tmp;
166 
167  r8a66597_write(r8a66597, 0, get_intenb_reg(port));
168  r8a66597_write(r8a66597, 0, get_intsts_reg(port));
169 
170  r8a66597_port_power(r8a66597, port, 0);
171 
172  do {
173  tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS;
174  udelay(640);
175  } while (tmp == EDGESTS);
176 
177  val = port ? DRPD : DCFM | DRPD;
178  r8a66597_bclr(r8a66597, val, get_syscfg_reg(port));
179  r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port));
180 }
181 
182 static int enable_controller(struct r8a66597 *r8a66597)
183 {
184  int ret, port;
185  u16 vif = r8a66597->pdata->vif ? LDRV : 0;
186  u16 irq_sense = r8a66597->irq_sense_low ? INTL : 0;
187  u16 endian = r8a66597->pdata->endian ? BIGEND : 0;
188 
189  ret = r8a66597_clock_enable(r8a66597);
190  if (ret < 0)
191  return ret;
192 
193  r8a66597_bset(r8a66597, vif & LDRV, PINCFG);
194  r8a66597_bset(r8a66597, USBE, SYSCFG0);
195 
196  r8a66597_bset(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
197  r8a66597_bset(r8a66597, irq_sense & INTL, SOFCFG);
198  r8a66597_bset(r8a66597, BRDY0, BRDYENB);
199  r8a66597_bset(r8a66597, BEMP0, BEMPENB);
200 
201  r8a66597_bset(r8a66597, endian & BIGEND, CFIFOSEL);
202  r8a66597_bset(r8a66597, endian & BIGEND, D0FIFOSEL);
203  r8a66597_bset(r8a66597, endian & BIGEND, D1FIFOSEL);
204  r8a66597_bset(r8a66597, TRNENSEL, SOFCFG);
205 
206  r8a66597_bset(r8a66597, SIGNE | SACKE, INTENB1);
207 
208  for (port = 0; port < r8a66597->max_root_hub; port++)
209  r8a66597_enable_port(r8a66597, port);
210 
211  return 0;
212 }
213 
214 static void disable_controller(struct r8a66597 *r8a66597)
215 {
216  int port;
217 
218  /* disable interrupts */
219  r8a66597_write(r8a66597, 0, INTENB0);
220  r8a66597_write(r8a66597, 0, INTENB1);
221  r8a66597_write(r8a66597, 0, BRDYENB);
222  r8a66597_write(r8a66597, 0, BEMPENB);
223  r8a66597_write(r8a66597, 0, NRDYENB);
224 
225  /* clear status */
226  r8a66597_write(r8a66597, 0, BRDYSTS);
227  r8a66597_write(r8a66597, 0, NRDYSTS);
228  r8a66597_write(r8a66597, 0, BEMPSTS);
229 
230  for (port = 0; port < r8a66597->max_root_hub; port++)
231  r8a66597_disable_port(r8a66597, port);
232 
233  r8a66597_clock_disable(r8a66597);
234 }
235 
236 static int get_parent_r8a66597_address(struct r8a66597 *r8a66597,
237  struct usb_device *udev)
238 {
239  struct r8a66597_device *dev;
240 
241  if (udev->parent && udev->parent->devnum != 1)
242  udev = udev->parent;
243 
244  dev = dev_get_drvdata(&udev->dev);
245  if (dev)
246  return dev->address;
247  else
248  return 0;
249 }
250 
251 static int is_child_device(char *devpath)
252 {
253  return (devpath[2] ? 1 : 0);
254 }
255 
256 static int is_hub_limit(char *devpath)
257 {
258  return ((strlen(devpath) >= 4) ? 1 : 0);
259 }
260 
261 static void get_port_number(struct r8a66597 *r8a66597,
262  char *devpath, u16 *root_port, u16 *hub_port)
263 {
264  if (root_port) {
265  *root_port = (devpath[0] & 0x0F) - 1;
266  if (*root_port >= r8a66597->max_root_hub)
267  printk(KERN_ERR "r8a66597: Illegal root port number.\n");
268  }
269  if (hub_port)
270  *hub_port = devpath[2] & 0x0F;
271 }
272 
273 static u16 get_r8a66597_usb_speed(enum usb_device_speed speed)
274 {
275  u16 usbspd = 0;
276 
277  switch (speed) {
278  case USB_SPEED_LOW:
279  usbspd = LSMODE;
280  break;
281  case USB_SPEED_FULL:
282  usbspd = FSMODE;
283  break;
284  case USB_SPEED_HIGH:
285  usbspd = HSMODE;
286  break;
287  default:
288  printk(KERN_ERR "r8a66597: unknown speed\n");
289  break;
290  }
291 
292  return usbspd;
293 }
294 
295 static void set_child_connect_map(struct r8a66597 *r8a66597, int address)
296 {
297  int idx;
298 
299  idx = address / 32;
300  r8a66597->child_connect_map[idx] |= 1 << (address % 32);
301 }
302 
303 static void put_child_connect_map(struct r8a66597 *r8a66597, int address)
304 {
305  int idx;
306 
307  idx = address / 32;
308  r8a66597->child_connect_map[idx] &= ~(1 << (address % 32));
309 }
310 
311 static void set_pipe_reg_addr(struct r8a66597_pipe *pipe, u8 dma_ch)
312 {
313  u16 pipenum = pipe->info.pipenum;
314  const unsigned long fifoaddr[] = {D0FIFO, D1FIFO, CFIFO};
315  const unsigned long fifosel[] = {D0FIFOSEL, D1FIFOSEL, CFIFOSEL};
316  const unsigned long fifoctr[] = {D0FIFOCTR, D1FIFOCTR, CFIFOCTR};
317 
318  if (dma_ch > R8A66597_PIPE_NO_DMA) /* dma fifo not use? */
319  dma_ch = R8A66597_PIPE_NO_DMA;
320 
321  pipe->fifoaddr = fifoaddr[dma_ch];
322  pipe->fifosel = fifosel[dma_ch];
323  pipe->fifoctr = fifoctr[dma_ch];
324 
325  if (pipenum == 0)
326  pipe->pipectr = DCPCTR;
327  else
328  pipe->pipectr = get_pipectr_addr(pipenum);
329 
330  if (check_bulk_or_isoc(pipenum)) {
331  pipe->pipetre = get_pipetre_addr(pipenum);
332  pipe->pipetrn = get_pipetrn_addr(pipenum);
333  } else {
334  pipe->pipetre = 0;
335  pipe->pipetrn = 0;
336  }
337 }
338 
339 static struct r8a66597_device *
340 get_urb_to_r8a66597_dev(struct r8a66597 *r8a66597, struct urb *urb)
341 {
342  if (usb_pipedevice(urb->pipe) == 0)
343  return &r8a66597->device0;
344 
345  return dev_get_drvdata(&urb->dev->dev);
346 }
347 
348 static int make_r8a66597_device(struct r8a66597 *r8a66597,
349  struct urb *urb, u8 addr)
350 {
351  struct r8a66597_device *dev;
352  int usb_address = urb->setup_packet[2]; /* urb->pipe is address 0 */
353 
354  dev = kzalloc(sizeof(struct r8a66597_device), GFP_ATOMIC);
355  if (dev == NULL)
356  return -ENOMEM;
357 
358  dev_set_drvdata(&urb->dev->dev, dev);
359  dev->udev = urb->dev;
360  dev->address = addr;
361  dev->usb_address = usb_address;
362  dev->state = USB_STATE_ADDRESS;
363  dev->ep_in_toggle = 0;
364  dev->ep_out_toggle = 0;
365  INIT_LIST_HEAD(&dev->device_list);
366  list_add_tail(&dev->device_list, &r8a66597->child_device);
367 
368  get_port_number(r8a66597, urb->dev->devpath,
369  &dev->root_port, &dev->hub_port);
370  if (!is_child_device(urb->dev->devpath))
371  r8a66597->root_hub[dev->root_port].dev = dev;
372 
373  set_devadd_reg(r8a66597, dev->address,
374  get_r8a66597_usb_speed(urb->dev->speed),
375  get_parent_r8a66597_address(r8a66597, urb->dev),
376  dev->hub_port, dev->root_port);
377 
378  return 0;
379 }
380 
381 /* this function must be called with interrupt disabled */
382 static u8 alloc_usb_address(struct r8a66597 *r8a66597, struct urb *urb)
383 {
384  u8 addr; /* R8A66597's address */
385  struct r8a66597_device *dev;
386 
387  if (is_hub_limit(urb->dev->devpath)) {
388  dev_err(&urb->dev->dev, "External hub limit reached.\n");
389  return 0;
390  }
391 
392  dev = get_urb_to_r8a66597_dev(r8a66597, urb);
393  if (dev && dev->state >= USB_STATE_ADDRESS)
394  return dev->address;
395 
396  for (addr = 1; addr <= R8A66597_MAX_DEVICE; addr++) {
397  if (r8a66597->address_map & (1 << addr))
398  continue;
399 
400  dev_dbg(&urb->dev->dev, "alloc_address: r8a66597_addr=%d\n", addr);
401  r8a66597->address_map |= 1 << addr;
402 
403  if (make_r8a66597_device(r8a66597, urb, addr) < 0)
404  return 0;
405 
406  return addr;
407  }
408 
409  dev_err(&urb->dev->dev,
410  "cannot communicate with a USB device more than 10.(%x)\n",
411  r8a66597->address_map);
412 
413  return 0;
414 }
415 
416 /* this function must be called with interrupt disabled */
417 static void free_usb_address(struct r8a66597 *r8a66597,
418  struct r8a66597_device *dev, int reset)
419 {
420  int port;
421 
422  if (!dev)
423  return;
424 
425  dev_dbg(&dev->udev->dev, "free_addr: addr=%d\n", dev->address);
426 
427  dev->state = USB_STATE_DEFAULT;
428  r8a66597->address_map &= ~(1 << dev->address);
429  dev->address = 0;
430  /*
431  * Only when resetting USB, it is necessary to erase drvdata. When
432  * a usb device with usb hub is disconnect, "dev->udev" is already
433  * freed on usb_desconnect(). So we cannot access the data.
434  */
435  if (reset)
436  dev_set_drvdata(&dev->udev->dev, NULL);
437  list_del(&dev->device_list);
438  kfree(dev);
439 
440  for (port = 0; port < r8a66597->max_root_hub; port++) {
441  if (r8a66597->root_hub[port].dev == dev) {
442  r8a66597->root_hub[port].dev = NULL;
443  break;
444  }
445  }
446 }
447 
448 static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg,
449  u16 mask, u16 loop)
450 {
451  u16 tmp;
452  int i = 0;
453 
454  do {
455  tmp = r8a66597_read(r8a66597, reg);
456  if (i++ > 1000000) {
457  printk(KERN_ERR "r8a66597: register%lx, loop %x "
458  "is timeout\n", reg, loop);
459  break;
460  }
461  ndelay(1);
462  } while ((tmp & mask) != loop);
463 }
464 
465 /* this function must be called with interrupt disabled */
466 static void pipe_start(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
467 {
468  u16 tmp;
469 
470  tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
471  if ((pipe->info.pipenum != 0) & ((tmp & PID_STALL) != 0)) /* stall? */
472  r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
473  r8a66597_mdfy(r8a66597, PID_BUF, PID, pipe->pipectr);
474 }
475 
476 /* this function must be called with interrupt disabled */
477 static void pipe_stop(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
478 {
479  u16 tmp;
480 
481  tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
482  if ((tmp & PID_STALL11) != PID_STALL11) /* force stall? */
483  r8a66597_mdfy(r8a66597, PID_STALL, PID, pipe->pipectr);
484  r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
485  r8a66597_reg_wait(r8a66597, pipe->pipectr, PBUSY, 0);
486 }
487 
488 /* this function must be called with interrupt disabled */
489 static void clear_all_buffer(struct r8a66597 *r8a66597,
490  struct r8a66597_pipe *pipe)
491 {
492  u16 tmp;
493 
494  if (!pipe || pipe->info.pipenum == 0)
495  return;
496 
497  pipe_stop(r8a66597, pipe);
498  r8a66597_bset(r8a66597, ACLRM, pipe->pipectr);
499  tmp = r8a66597_read(r8a66597, pipe->pipectr);
500  tmp = r8a66597_read(r8a66597, pipe->pipectr);
501  tmp = r8a66597_read(r8a66597, pipe->pipectr);
502  r8a66597_bclr(r8a66597, ACLRM, pipe->pipectr);
503 }
504 
505 /* this function must be called with interrupt disabled */
506 static void r8a66597_pipe_toggle(struct r8a66597 *r8a66597,
507  struct r8a66597_pipe *pipe, int toggle)
508 {
509  if (toggle)
510  r8a66597_bset(r8a66597, SQSET, pipe->pipectr);
511  else
512  r8a66597_bset(r8a66597, SQCLR, pipe->pipectr);
513 }
514 
515 static inline unsigned short mbw_value(struct r8a66597 *r8a66597)
516 {
517  if (r8a66597->pdata->on_chip)
518  return MBW_32;
519  else
520  return MBW_16;
521 }
522 
523 /* this function must be called with interrupt disabled */
524 static inline void cfifo_change(struct r8a66597 *r8a66597, u16 pipenum)
525 {
526  unsigned short mbw = mbw_value(r8a66597);
527 
528  r8a66597_mdfy(r8a66597, mbw | pipenum, mbw | CURPIPE, CFIFOSEL);
529  r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, pipenum);
530 }
531 
532 /* this function must be called with interrupt disabled */
533 static inline void fifo_change_from_pipe(struct r8a66597 *r8a66597,
534  struct r8a66597_pipe *pipe)
535 {
536  unsigned short mbw = mbw_value(r8a66597);
537 
538  cfifo_change(r8a66597, 0);
539  r8a66597_mdfy(r8a66597, mbw | 0, mbw | CURPIPE, D0FIFOSEL);
540  r8a66597_mdfy(r8a66597, mbw | 0, mbw | CURPIPE, D1FIFOSEL);
541 
542  r8a66597_mdfy(r8a66597, mbw | pipe->info.pipenum, mbw | CURPIPE,
543  pipe->fifosel);
544  r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, pipe->info.pipenum);
545 }
546 
547 static u16 r8a66597_get_pipenum(struct urb *urb, struct usb_host_endpoint *hep)
548 {
549  struct r8a66597_pipe *pipe = hep->hcpriv;
550 
551  if (usb_pipeendpoint(urb->pipe) == 0)
552  return 0;
553  else
554  return pipe->info.pipenum;
555 }
556 
557 static u16 get_urb_to_r8a66597_addr(struct r8a66597 *r8a66597, struct urb *urb)
558 {
559  struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
560 
561  return (usb_pipedevice(urb->pipe) == 0) ? 0 : dev->address;
562 }
563 
564 static unsigned short *get_toggle_pointer(struct r8a66597_device *dev,
565  int urb_pipe)
566 {
567  if (!dev)
568  return NULL;
569 
570  return usb_pipein(urb_pipe) ? &dev->ep_in_toggle : &dev->ep_out_toggle;
571 }
572 
573 /* this function must be called with interrupt disabled */
574 static void pipe_toggle_set(struct r8a66597 *r8a66597,
575  struct r8a66597_pipe *pipe,
576  struct urb *urb, int set)
577 {
578  struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
579  unsigned char endpoint = usb_pipeendpoint(urb->pipe);
580  unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
581 
582  if (!toggle)
583  return;
584 
585  if (set)
586  *toggle |= 1 << endpoint;
587  else
588  *toggle &= ~(1 << endpoint);
589 }
590 
591 /* this function must be called with interrupt disabled */
592 static void pipe_toggle_save(struct r8a66597 *r8a66597,
593  struct r8a66597_pipe *pipe,
594  struct urb *urb)
595 {
596  if (r8a66597_read(r8a66597, pipe->pipectr) & SQMON)
597  pipe_toggle_set(r8a66597, pipe, urb, 1);
598  else
599  pipe_toggle_set(r8a66597, pipe, urb, 0);
600 }
601 
602 /* this function must be called with interrupt disabled */
603 static void pipe_toggle_restore(struct r8a66597 *r8a66597,
604  struct r8a66597_pipe *pipe,
605  struct urb *urb)
606 {
607  struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
608  unsigned char endpoint = usb_pipeendpoint(urb->pipe);
609  unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
610 
611  if (!toggle)
612  return;
613 
614  r8a66597_pipe_toggle(r8a66597, pipe, *toggle & (1 << endpoint));
615 }
616 
617 /* this function must be called with interrupt disabled */
618 static void pipe_buffer_setting(struct r8a66597 *r8a66597,
619  struct r8a66597_pipe_info *info)
620 {
621  u16 val = 0;
622 
623  if (info->pipenum == 0)
624  return;
625 
626  r8a66597_bset(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
627  r8a66597_bclr(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
628  r8a66597_write(r8a66597, info->pipenum, PIPESEL);
629  if (!info->dir_in)
630  val |= R8A66597_DIR;
631  if (info->type == R8A66597_BULK && info->dir_in)
632  val |= R8A66597_DBLB | R8A66597_SHTNAK;
633  val |= info->type | info->epnum;
634  r8a66597_write(r8a66597, val, PIPECFG);
635 
636  r8a66597_write(r8a66597, (info->buf_bsize << 10) | (info->bufnum),
637  PIPEBUF);
638  r8a66597_write(r8a66597, make_devsel(info->address) | info->maxpacket,
639  PIPEMAXP);
640  r8a66597_write(r8a66597, info->interval, PIPEPERI);
641 }
642 
643 /* this function must be called with interrupt disabled */
644 static void pipe_setting(struct r8a66597 *r8a66597, struct r8a66597_td *td)
645 {
646  struct r8a66597_pipe_info *info;
647  struct urb *urb = td->urb;
648 
649  if (td->pipenum > 0) {
650  info = &td->pipe->info;
651  cfifo_change(r8a66597, 0);
652  pipe_buffer_setting(r8a66597, info);
653 
654  if (!usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe),
655  usb_pipeout(urb->pipe)) &&
656  !usb_pipecontrol(urb->pipe)) {
657  r8a66597_pipe_toggle(r8a66597, td->pipe, 0);
658  pipe_toggle_set(r8a66597, td->pipe, urb, 0);
659  clear_all_buffer(r8a66597, td->pipe);
660  usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
661  usb_pipeout(urb->pipe), 1);
662  }
663  pipe_toggle_restore(r8a66597, td->pipe, urb);
664  }
665 }
666 
667 /* this function must be called with interrupt disabled */
668 static u16 get_empty_pipenum(struct r8a66597 *r8a66597,
669  struct usb_endpoint_descriptor *ep)
670 {
671  u16 array[R8A66597_MAX_NUM_PIPE], i = 0, min;
672 
673  memset(array, 0, sizeof(array));
674  switch (usb_endpoint_type(ep)) {
675  case USB_ENDPOINT_XFER_BULK:
676  if (usb_endpoint_dir_in(ep))
677  array[i++] = 4;
678  else {
679  array[i++] = 3;
680  array[i++] = 5;
681  }
682  break;
683  case USB_ENDPOINT_XFER_INT:
684  if (usb_endpoint_dir_in(ep)) {
685  array[i++] = 6;
686  array[i++] = 7;
687  array[i++] = 8;
688  } else
689  array[i++] = 9;
690  break;
691  case USB_ENDPOINT_XFER_ISOC:
692  if (usb_endpoint_dir_in(ep))
693  array[i++] = 2;
694  else
695  array[i++] = 1;
696  break;
697  default:
698  printk(KERN_ERR "r8a66597: Illegal type\n");
699  return 0;
700  }
701 
702  i = 1;
703  min = array[0];
704  while (array[i] != 0) {
705  if (r8a66597->pipe_cnt[min] > r8a66597->pipe_cnt[array[i]])
706  min = array[i];
707  i++;
708  }
709 
710  return min;
711 }
712 
713 static u16 get_r8a66597_type(__u8 type)
714 {
715  u16 r8a66597_type;
716 
717  switch (type) {
718  case USB_ENDPOINT_XFER_BULK:
719  r8a66597_type = R8A66597_BULK;
720  break;
721  case USB_ENDPOINT_XFER_INT:
722  r8a66597_type = R8A66597_INT;
723  break;
724  case USB_ENDPOINT_XFER_ISOC:
725  r8a66597_type = R8A66597_ISO;
726  break;
727  default:
728  printk(KERN_ERR "r8a66597: Illegal type\n");
729  r8a66597_type = 0x0000;
730  break;
731  }
732 
733  return r8a66597_type;
734 }
735 
736 static u16 get_bufnum(u16 pipenum)
737 {
738  u16 bufnum = 0;
739 
740  if (pipenum == 0)
741  bufnum = 0;
742  else if (check_bulk_or_isoc(pipenum))
743  bufnum = 8 + (pipenum - 1) * R8A66597_BUF_BSIZE*2;
744  else if (check_interrupt(pipenum))
745  bufnum = 4 + (pipenum - 6);
746  else
747  printk(KERN_ERR "r8a66597: Illegal pipenum (%d)\n", pipenum);
748 
749  return bufnum;
750 }
751 
752 static u16 get_buf_bsize(u16 pipenum)
753 {
754  u16 buf_bsize = 0;
755 
756  if (pipenum == 0)
757  buf_bsize = 3;
758  else if (check_bulk_or_isoc(pipenum))
759  buf_bsize = R8A66597_BUF_BSIZE - 1;
760  else if (check_interrupt(pipenum))
761  buf_bsize = 0;
762  else
763  printk(KERN_ERR "r8a66597: Illegal pipenum (%d)\n", pipenum);
764 
765  return buf_bsize;
766 }
767 
768 /* this function must be called with interrupt disabled */
769 static void enable_r8a66597_pipe_dma(struct r8a66597 *r8a66597,
770  struct r8a66597_device *dev,
771  struct r8a66597_pipe *pipe,
772  struct urb *urb)
773 {
774  int i;
775  struct r8a66597_pipe_info *info = &pipe->info;
776  unsigned short mbw = mbw_value(r8a66597);
777 
778  /* pipe dma is only for external controlles */
779  if (r8a66597->pdata->on_chip)
780  return;
781 
782  if ((pipe->info.pipenum != 0) && (info->type != R8A66597_INT)) {
783  for (i = 0; i < R8A66597_MAX_DMA_CHANNEL; i++) {
784  if ((r8a66597->dma_map & (1 << i)) != 0)
785  continue;
786 
787  dev_info(&dev->udev->dev,
788  "address %d, EndpointAddress 0x%02x use "
789  "DMA FIFO\n", usb_pipedevice(urb->pipe),
790  info->dir_in ?
791  USB_ENDPOINT_DIR_MASK + info->epnum
792  : info->epnum);
793 
794  r8a66597->dma_map |= 1 << i;
795  dev->dma_map |= 1 << i;
796  set_pipe_reg_addr(pipe, i);
797 
798  cfifo_change(r8a66597, 0);
799  r8a66597_mdfy(r8a66597, mbw | pipe->info.pipenum,
800  mbw | CURPIPE, pipe->fifosel);
801 
802  r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE,
803  pipe->info.pipenum);
804  r8a66597_bset(r8a66597, BCLR, pipe->fifoctr);
805  break;
806  }
807  }
808 }
809 
810 /* this function must be called with interrupt disabled */
811 static void enable_r8a66597_pipe(struct r8a66597 *r8a66597, struct urb *urb,
812  struct usb_host_endpoint *hep,
813  struct r8a66597_pipe_info *info)
814 {
815  struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
816  struct r8a66597_pipe *pipe = hep->hcpriv;
817 
818  dev_dbg(&dev->udev->dev, "enable_pipe:\n");
819 
820  pipe->info = *info;
821  set_pipe_reg_addr(pipe, R8A66597_PIPE_NO_DMA);
822  r8a66597->pipe_cnt[pipe->info.pipenum]++;
823  dev->pipe_cnt[pipe->info.pipenum]++;
824 
825  enable_r8a66597_pipe_dma(r8a66597, dev, pipe, urb);
826 }
827 
828 static void r8a66597_urb_done(struct r8a66597 *r8a66597, struct urb *urb,
829  int status)
830 __releases(r8a66597->lock)
831 __acquires(r8a66597->lock)
832 {
833  if (usb_pipein(urb->pipe) && usb_pipetype(urb->pipe) != PIPE_CONTROL) {
834  void *ptr;
835 
836  for (ptr = urb->transfer_buffer;
837  ptr < urb->transfer_buffer + urb->transfer_buffer_length;
838  ptr += PAGE_SIZE)
839  flush_dcache_page(virt_to_page(ptr));
840  }
841 
842  usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb);
843  spin_unlock(&r8a66597->lock);
844  usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb, status);
845  spin_lock(&r8a66597->lock);
846 }
847 
848 /* this function must be called with interrupt disabled */
849 static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address)
850 {
851  struct r8a66597_td *td, *next;
852  struct urb *urb;
853  struct list_head *list = &r8a66597->pipe_queue[pipenum];
854 
855  if (list_empty(list))
856  return;
857 
858  list_for_each_entry_safe(td, next, list, queue) {
859  if (td->address != address)
860  continue;
861 
862  urb = td->urb;
863  list_del(&td->queue);
864  kfree(td);
865 
866  if (urb)
867  r8a66597_urb_done(r8a66597, urb, -ENODEV);
868 
869  break;
870  }
871 }
872 
873 /* this function must be called with interrupt disabled */
874 static void disable_r8a66597_pipe_all(struct r8a66597 *r8a66597,
875  struct r8a66597_device *dev)
876 {
877  int check_ep0 = 0;
878  u16 pipenum;
879 
880  if (!dev)
881  return;
882 
883  for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
884  if (!dev->pipe_cnt[pipenum])
885  continue;
886 
887  if (!check_ep0) {
888  check_ep0 = 1;
889  force_dequeue(r8a66597, 0, dev->address);
890  }
891 
892  r8a66597->pipe_cnt[pipenum] -= dev->pipe_cnt[pipenum];
893  dev->pipe_cnt[pipenum] = 0;
894  force_dequeue(r8a66597, pipenum, dev->address);
895  }
896 
897  dev_dbg(&dev->udev->dev, "disable_pipe\n");
898 
899  r8a66597->dma_map &= ~(dev->dma_map);
900  dev->dma_map = 0;
901 }
902 
903 static u16 get_interval(struct urb *urb, __u8 interval)
904 {
905  u16 time = 1;
906  int i;
907 
908  if (urb->dev->speed == USB_SPEED_HIGH) {
909  if (interval > IITV)
910  time = IITV;
911  else
912  time = interval ? interval - 1 : 0;
913  } else {
914  if (interval > 128) {
915  time = IITV;
916  } else {
917  /* calculate the nearest value for PIPEPERI */
918  for (i = 0; i < 7; i++) {
919  if ((1 << i) < interval &&
920  (1 << (i + 1) > interval))
921  time = 1 << i;
922  }
923  }
924  }
925 
926  return time;
927 }
928 
929 static unsigned long get_timer_interval(struct urb *urb, __u8 interval)
930 {
931  __u8 i;
932  unsigned long time = 1;
933 
934  if (usb_pipeisoc(urb->pipe))
935  return 0;
936 
937  if (get_r8a66597_usb_speed(urb->dev->speed) == HSMODE) {
938  for (i = 0; i < (interval - 1); i++)
939  time *= 2;
940  time = time * 125 / 1000; /* uSOF -> msec */
941  } else {
942  time = interval;
943  }
944 
945  return time;
946 }
947 
948 /* this function must be called with interrupt disabled */
949 static void init_pipe_info(struct r8a66597 *r8a66597, struct urb *urb,
950  struct usb_host_endpoint *hep,
951  struct usb_endpoint_descriptor *ep)
952 {
953  struct r8a66597_pipe_info info;
954 
955  info.pipenum = get_empty_pipenum(r8a66597, ep);
956  info.address = get_urb_to_r8a66597_addr(r8a66597, urb);
957  info.epnum = usb_endpoint_num(ep);
958  info.maxpacket = usb_endpoint_maxp(ep);
959  info.type = get_r8a66597_type(usb_endpoint_type(ep));
960  info.bufnum = get_bufnum(info.pipenum);
961  info.buf_bsize = get_buf_bsize(info.pipenum);
962  if (info.type == R8A66597_BULK) {
963  info.interval = 0;
964  info.timer_interval = 0;
965  } else {
966  info.interval = get_interval(urb, ep->bInterval);
967  info.timer_interval = get_timer_interval(urb, ep->bInterval);
968  }
969  if (usb_endpoint_dir_in(ep))
970  info.dir_in = 1;
971  else
972  info.dir_in = 0;
973 
974  enable_r8a66597_pipe(r8a66597, urb, hep, &info);
975 }
976 
977 static void init_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
978 {
979  struct r8a66597_device *dev;
980 
981  dev = get_urb_to_r8a66597_dev(r8a66597, urb);
982  dev->state = USB_STATE_CONFIGURED;
983 }
984 
985 static void pipe_irq_enable(struct r8a66597 *r8a66597, struct urb *urb,
986  u16 pipenum)
987 {
988  if (pipenum == 0 && usb_pipeout(urb->pipe))
989  enable_irq_empty(r8a66597, pipenum);
990  else
991  enable_irq_ready(r8a66597, pipenum);
992 
993  if (!usb_pipeisoc(urb->pipe))
994  enable_irq_nrdy(r8a66597, pipenum);
995 }
996 
997 static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum)
998 {
999  disable_irq_ready(r8a66597, pipenum);
1000  disable_irq_nrdy(r8a66597, pipenum);
1001 }
1002 
1003 static void r8a66597_root_hub_start_polling(struct r8a66597 *r8a66597)
1004 {
1005  mod_timer(&r8a66597->rh_timer,
1006  jiffies + msecs_to_jiffies(R8A66597_RH_POLL_TIME));
1007 }
1008 
1009 static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port,
1010  int connect)
1011 {
1012  struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1013 
1014  rh->old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
1015  rh->scount = R8A66597_MAX_SAMPLING;
1016  if (connect)
1017  rh->port |= USB_PORT_STAT_CONNECTION;
1018  else
1019  rh->port &= ~USB_PORT_STAT_CONNECTION;
1020  rh->port |= USB_PORT_STAT_C_CONNECTION << 16;
1021 
1022  r8a66597_root_hub_start_polling(r8a66597);
1023 }
1024 
1025 /* this function must be called with interrupt disabled */
1026 static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port,
1027  u16 syssts)
1028 __releases(r8a66597->lock)
1029 __acquires(r8a66597->lock)
1030 {
1031  if (syssts == SE0) {
1032  r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port));
1033  r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
1034  } else {
1035  if (syssts == FS_JSTS)
1036  r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port));
1037  else if (syssts == LS_JSTS)
1038  r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port));
1039 
1040  r8a66597_write(r8a66597, ~DTCH, get_intsts_reg(port));
1041  r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port));
1042 
1043  if (r8a66597->bus_suspended)
1044  usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597));
1045  }
1046 
1047  spin_unlock(&r8a66597->lock);
1048  usb_hcd_poll_rh_status(r8a66597_to_hcd(r8a66597));
1049  spin_lock(&r8a66597->lock);
1050 }
1051 
1052 /* this function must be called with interrupt disabled */
1053 static void r8a66597_usb_connect(struct r8a66597 *r8a66597, int port)
1054 {
1055  u16 speed = get_rh_usb_speed(r8a66597, port);
1056  struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1057 
1058  rh->port &= ~(USB_PORT_STAT_HIGH_SPEED | USB_PORT_STAT_LOW_SPEED);
1059  if (speed == HSMODE)
1060  rh->port |= USB_PORT_STAT_HIGH_SPEED;
1061  else if (speed == LSMODE)
1062  rh->port |= USB_PORT_STAT_LOW_SPEED;
1063 
1064  rh->port &= ~USB_PORT_STAT_RESET;
1065  rh->port |= USB_PORT_STAT_ENABLE;
1066 }
1067 
1068 /* this function must be called with interrupt disabled */
1069 static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597, int port)
1070 {
1071  struct r8a66597_device *dev = r8a66597->root_hub[port].dev;
1072 
1073  disable_r8a66597_pipe_all(r8a66597, dev);
1074  free_usb_address(r8a66597, dev, 0);
1075 
1076  start_root_hub_sampling(r8a66597, port, 0);
1077 }
1078 
1079 /* this function must be called with interrupt disabled */
1080 static void prepare_setup_packet(struct r8a66597 *r8a66597,
1081  struct r8a66597_td *td)
1082 {
1083  int i;
1084  __le16 *p = (__le16 *)td->urb->setup_packet;
1085  unsigned long setup_addr = USBREQ;
1086 
1087  r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket,
1088  DCPMAXP);
1089  r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1);
1090 
1091  for (i = 0; i < 4; i++) {
1092  r8a66597_write(r8a66597, le16_to_cpu(p[i]), setup_addr);
1093  setup_addr += 2;
1094  }
1095  r8a66597_write(r8a66597, SUREQ, DCPCTR);
1096 }
1097 
1098 /* this function must be called with interrupt disabled */
1099 static void prepare_packet_read(struct r8a66597 *r8a66597,
1100  struct r8a66597_td *td)
1101 {
1102  struct urb *urb = td->urb;
1103 
1104  if (usb_pipecontrol(urb->pipe)) {
1105  r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
1106  r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
1107  r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1108  if (urb->actual_length == 0) {
1109  r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1110  r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1111  }
1112  pipe_irq_disable(r8a66597, td->pipenum);
1113  pipe_start(r8a66597, td->pipe);
1114  pipe_irq_enable(r8a66597, urb, td->pipenum);
1115  } else {
1116  if (urb->actual_length == 0) {
1117  pipe_irq_disable(r8a66597, td->pipenum);
1118  pipe_setting(r8a66597, td);
1119  pipe_stop(r8a66597, td->pipe);
1120  r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
1121 
1122  if (td->pipe->pipetre) {
1123  r8a66597_write(r8a66597, TRCLR,
1124  td->pipe->pipetre);
1125  r8a66597_write(r8a66597,
1126  DIV_ROUND_UP
1127  (urb->transfer_buffer_length,
1128  td->maxpacket),
1129  td->pipe->pipetrn);
1130  r8a66597_bset(r8a66597, TRENB,
1131  td->pipe->pipetre);
1132  }
1133 
1134  pipe_start(r8a66597, td->pipe);
1135  pipe_irq_enable(r8a66597, urb, td->pipenum);
1136  }
1137  }
1138 }
1139 
1140 /* this function must be called with interrupt disabled */
1141 static void prepare_packet_write(struct r8a66597 *r8a66597,
1142  struct r8a66597_td *td)
1143 {
1144  u16 tmp;
1145  struct urb *urb = td->urb;
1146 
1147  if (usb_pipecontrol(urb->pipe)) {
1148  pipe_stop(r8a66597, td->pipe);
1149  r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
1150  r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
1151  r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1152  if (urb->actual_length == 0) {
1153  r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1154  r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1155  }
1156  } else {
1157  if (urb->actual_length == 0)
1158  pipe_setting(r8a66597, td);
1159  if (td->pipe->pipetre)
1160  r8a66597_bclr(r8a66597, TRENB, td->pipe->pipetre);
1161  }
1162  r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
1163 
1164  fifo_change_from_pipe(r8a66597, td->pipe);
1165  tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1166  if (unlikely((tmp & FRDY) == 0))
1167  pipe_irq_enable(r8a66597, urb, td->pipenum);
1168  else
1169  packet_write(r8a66597, td->pipenum);
1170  pipe_start(r8a66597, td->pipe);
1171 }
1172 
1173 /* this function must be called with interrupt disabled */
1174 static void prepare_status_packet(struct r8a66597 *r8a66597,
1175  struct r8a66597_td *td)
1176 {
1177  struct urb *urb = td->urb;
1178 
1179  r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1180  pipe_stop(r8a66597, td->pipe);
1181 
1182  if (urb->setup_packet[0] & USB_ENDPOINT_DIR_MASK) {
1183  r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
1184  r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
1185  r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1186  r8a66597_write(r8a66597, ~BEMP0, BEMPSTS);
1187  r8a66597_write(r8a66597, BCLR | BVAL, CFIFOCTR);
1188  enable_irq_empty(r8a66597, 0);
1189  } else {
1190  r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
1191  r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
1192  r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1193  r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1194  enable_irq_ready(r8a66597, 0);
1195  }
1196  enable_irq_nrdy(r8a66597, 0);
1197  pipe_start(r8a66597, td->pipe);
1198 }
1199 
1200 static int is_set_address(unsigned char *setup_packet)
1201 {
1202  if (((setup_packet[0] & USB_TYPE_MASK) == USB_TYPE_STANDARD) &&
1203  setup_packet[1] == USB_REQ_SET_ADDRESS)
1204  return 1;
1205  else
1206  return 0;
1207 }
1208 
1209 /* this function must be called with interrupt disabled */
1210 static int start_transfer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1211 {
1212  BUG_ON(!td);
1213 
1214  switch (td->type) {
1215  case USB_PID_SETUP:
1216  if (is_set_address(td->urb->setup_packet)) {
1217  td->set_address = 1;
1218  td->urb->setup_packet[2] = alloc_usb_address(r8a66597,
1219  td->urb);
1220  if (td->urb->setup_packet[2] == 0)
1221  return -EPIPE;
1222  }
1223  prepare_setup_packet(r8a66597, td);
1224  break;
1225  case USB_PID_IN:
1226  prepare_packet_read(r8a66597, td);
1227  break;
1228  case USB_PID_OUT:
1229  prepare_packet_write(r8a66597, td);
1230  break;
1231  case USB_PID_ACK:
1232  prepare_status_packet(r8a66597, td);
1233  break;
1234  default:
1235  printk(KERN_ERR "r8a66597: invalid type.\n");
1236  break;
1237  }
1238 
1239  return 0;
1240 }
1241 
1242 static int check_transfer_finish(struct r8a66597_td *td, struct urb *urb)
1243 {
1244  if (usb_pipeisoc(urb->pipe)) {
1245  if (urb->number_of_packets == td->iso_cnt)
1246  return 1;
1247  }
1248 
1249  /* control or bulk or interrupt */
1250  if ((urb->transfer_buffer_length <= urb->actual_length) ||
1251  (td->short_packet) || (td->zero_packet))
1252  return 1;
1253 
1254  return 0;
1255 }
1256 
1257 /* this function must be called with interrupt disabled */
1258 static void set_td_timer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1259 {
1260  unsigned long time;
1261 
1262  BUG_ON(!td);
1263 
1264  if (!list_empty(&r8a66597->pipe_queue[td->pipenum]) &&
1265  !usb_pipecontrol(td->urb->pipe) && usb_pipein(td->urb->pipe)) {
1266  r8a66597->timeout_map |= 1 << td->pipenum;
1267  switch (usb_pipetype(td->urb->pipe)) {
1268  case PIPE_INTERRUPT:
1269  case PIPE_ISOCHRONOUS:
1270  time = 30;
1271  break;
1272  default:
1273  time = 300;
1274  break;
1275  }
1276 
1277  mod_timer(&r8a66597->td_timer[td->pipenum],
1278  jiffies + msecs_to_jiffies(time));
1279  }
1280 }
1281 
1282 /* this function must be called with interrupt disabled */
1283 static void finish_request(struct r8a66597 *r8a66597, struct r8a66597_td *td,
1284  u16 pipenum, struct urb *urb, int status)
1285 __releases(r8a66597->lock) __acquires(r8a66597->lock)
1286 {
1287  int restart = 0;
1288  struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
1289 
1290  r8a66597->timeout_map &= ~(1 << pipenum);
1291 
1292  if (likely(td)) {
1293  if (td->set_address && (status != 0 || urb->unlinked))
1294  r8a66597->address_map &= ~(1 << urb->setup_packet[2]);
1295 
1296  pipe_toggle_save(r8a66597, td->pipe, urb);
1297  list_del(&td->queue);
1298  kfree(td);
1299  }
1300 
1301  if (!list_empty(&r8a66597->pipe_queue[pipenum]))
1302  restart = 1;
1303 
1304  if (likely(urb)) {
1305  if (usb_pipeisoc(urb->pipe))
1306  urb->start_frame = r8a66597_get_frame(hcd);
1307 
1308  r8a66597_urb_done(r8a66597, urb, status);
1309  }
1310 
1311  if (restart) {
1312  td = r8a66597_get_td(r8a66597, pipenum);
1313  if (unlikely(!td))
1314  return;
1315 
1316  start_transfer(r8a66597, td);
1317  set_td_timer(r8a66597, td);
1318  }
1319 }
1320 
1321 static void packet_read(struct r8a66597 *r8a66597, u16 pipenum)
1322 {
1323  u16 tmp;
1324  int rcv_len, bufsize, urb_len, size;
1325  u16 *buf;
1326  struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1327  struct urb *urb;
1328  int finish = 0;
1329  int status = 0;
1330 
1331  if (unlikely(!td))
1332  return;
1333  urb = td->urb;
1334 
1335  fifo_change_from_pipe(r8a66597, td->pipe);
1336  tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1337  if (unlikely((tmp & FRDY) == 0)) {
1338  pipe_stop(r8a66597, td->pipe);
1339  pipe_irq_disable(r8a66597, pipenum);
1340  printk(KERN_ERR "r8a66597: in fifo not ready (%d)\n", pipenum);
1341  finish_request(r8a66597, td, pipenum, td->urb, -EPIPE);
1342  return;
1343  }
1344 
1345  /* prepare parameters */
1346  rcv_len = tmp & DTLN;
1347  if (usb_pipeisoc(urb->pipe)) {
1348  buf = (u16 *)(urb->transfer_buffer +
1349  urb->iso_frame_desc[td->iso_cnt].offset);
1350  urb_len = urb->iso_frame_desc[td->iso_cnt].length;
1351  } else {
1352  buf = (void *)urb->transfer_buffer + urb->actual_length;
1353  urb_len = urb->transfer_buffer_length - urb->actual_length;
1354  }
1355  bufsize = min(urb_len, (int) td->maxpacket);
1356  if (rcv_len <= bufsize) {
1357  size = rcv_len;
1358  } else {
1359  size = bufsize;
1360  status = -EOVERFLOW;
1361  finish = 1;
1362  }
1363 
1364  /* update parameters */
1365  urb->actual_length += size;
1366  if (rcv_len == 0)
1367  td->zero_packet = 1;
1368  if (rcv_len < bufsize) {
1369  td->short_packet = 1;
1370  }
1371  if (usb_pipeisoc(urb->pipe)) {
1372  urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1373  urb->iso_frame_desc[td->iso_cnt].status = status;
1374  td->iso_cnt++;
1375  finish = 0;
1376  }
1377 
1378  /* check transfer finish */
1379  if (finish || check_transfer_finish(td, urb)) {
1380  pipe_stop(r8a66597, td->pipe);
1381  pipe_irq_disable(r8a66597, pipenum);
1382  finish = 1;
1383  }
1384 
1385  /* read fifo */
1386  if (urb->transfer_buffer) {
1387  if (size == 0)
1388  r8a66597_write(r8a66597, BCLR, td->pipe->fifoctr);
1389  else
1390  r8a66597_read_fifo(r8a66597, td->pipe->fifoaddr,
1391  buf, size);
1392  }
1393 
1394  if (finish && pipenum != 0)
1395  finish_request(r8a66597, td, pipenum, urb, status);
1396 }
1397 
1398 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum)
1399 {
1400  u16 tmp;
1401  int bufsize, size;
1402  u16 *buf;
1403  struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1404  struct urb *urb;
1405 
1406  if (unlikely(!td))
1407  return;
1408  urb = td->urb;
1409 
1410  fifo_change_from_pipe(r8a66597, td->pipe);
1411  tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1412  if (unlikely((tmp & FRDY) == 0)) {
1413  pipe_stop(r8a66597, td->pipe);
1414  pipe_irq_disable(r8a66597, pipenum);
1415  printk(KERN_ERR "r8a66597: out fifo not ready (%d)\n", pipenum);
1416  finish_request(r8a66597, td, pipenum, urb, -EPIPE);
1417  return;
1418  }
1419 
1420  /* prepare parameters */
1421  bufsize = td->maxpacket;
1422  if (usb_pipeisoc(urb->pipe)) {
1423  buf = (u16 *)(urb->transfer_buffer +
1424  urb->iso_frame_desc[td->iso_cnt].offset);
1425  size = min(bufsize,
1426  (int)urb->iso_frame_desc[td->iso_cnt].length);
1427  } else {
1428  buf = (u16 *)(urb->transfer_buffer + urb->actual_length);
1429  size = min_t(u32, bufsize,
1430  urb->transfer_buffer_length - urb->actual_length);
1431  }
1432 
1433  /* write fifo */
1434  if (pipenum > 0)
1435  r8a66597_write(r8a66597, ~(1 << pipenum), BEMPSTS);
1436  if (urb->transfer_buffer) {
1437  r8a66597_write_fifo(r8a66597, td->pipe, buf, size);
1438  if (!usb_pipebulk(urb->pipe) || td->maxpacket != size)
1439  r8a66597_write(r8a66597, BVAL, td->pipe->fifoctr);
1440  }
1441 
1442  /* update parameters */
1443  urb->actual_length += size;
1444  if (usb_pipeisoc(urb->pipe)) {
1445  urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1446  urb->iso_frame_desc[td->iso_cnt].status = 0;
1447  td->iso_cnt++;
1448  }
1449 
1450  /* check transfer finish */
1451  if (check_transfer_finish(td, urb)) {
1452  disable_irq_ready(r8a66597, pipenum);
1453  enable_irq_empty(r8a66597, pipenum);
1454  if (!usb_pipeisoc(urb->pipe))
1455  enable_irq_nrdy(r8a66597, pipenum);
1456  } else
1457  pipe_irq_enable(r8a66597, urb, pipenum);
1458 }
1459 
1460 
1461 static void check_next_phase(struct r8a66597 *r8a66597, int status)
1462 {
1463  struct r8a66597_td *td = r8a66597_get_td(r8a66597, 0);
1464  struct urb *urb;
1465  u8 finish = 0;
1466 
1467  if (unlikely(!td))
1468  return;
1469  urb = td->urb;
1470 
1471  switch (td->type) {
1472  case USB_PID_IN:
1473  case USB_PID_OUT:
1474  if (check_transfer_finish(td, urb))
1475  td->type = USB_PID_ACK;
1476  break;
1477  case USB_PID_SETUP:
1478  if (urb->transfer_buffer_length == urb->actual_length)
1479  td->type = USB_PID_ACK;
1480  else if (usb_pipeout(urb->pipe))
1481  td->type = USB_PID_OUT;
1482  else
1483  td->type = USB_PID_IN;
1484  break;
1485  case USB_PID_ACK:
1486  finish = 1;
1487  break;
1488  }
1489 
1490  if (finish || status != 0 || urb->unlinked)
1491  finish_request(r8a66597, td, 0, urb, status);
1492  else
1493  start_transfer(r8a66597, td);
1494 }
1495 
1496 static int get_urb_error(struct r8a66597 *r8a66597, u16 pipenum)
1497 {
1498  struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1499 
1500  if (td) {
1501  u16 pid = r8a66597_read(r8a66597, td->pipe->pipectr) & PID;
1502 
1503  if (pid == PID_NAK)
1504  return -ECONNRESET;
1505  else
1506  return -EPIPE;
1507  }
1508  return 0;
1509 }
1510 
1511 static void irq_pipe_ready(struct r8a66597 *r8a66597)
1512 {
1513  u16 check;
1514  u16 pipenum;
1515  u16 mask;
1516  struct r8a66597_td *td;
1517 
1518  mask = r8a66597_read(r8a66597, BRDYSTS)
1519  & r8a66597_read(r8a66597, BRDYENB);
1520  r8a66597_write(r8a66597, ~mask, BRDYSTS);
1521  if (mask & BRDY0) {
1522  td = r8a66597_get_td(r8a66597, 0);
1523  if (td && td->type == USB_PID_IN)
1524  packet_read(r8a66597, 0);
1525  else
1526  pipe_irq_disable(r8a66597, 0);
1527  check_next_phase(r8a66597, 0);
1528  }
1529 
1530  for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1531  check = 1 << pipenum;
1532  if (mask & check) {
1533  td = r8a66597_get_td(r8a66597, pipenum);
1534  if (unlikely(!td))
1535  continue;
1536 
1537  if (td->type == USB_PID_IN)
1538  packet_read(r8a66597, pipenum);
1539  else if (td->type == USB_PID_OUT)
1540  packet_write(r8a66597, pipenum);
1541  }
1542  }
1543 }
1544 
1545 static void irq_pipe_empty(struct r8a66597 *r8a66597)
1546 {
1547  u16 tmp;
1548  u16 check;
1549  u16 pipenum;
1550  u16 mask;
1551  struct r8a66597_td *td;
1552 
1553  mask = r8a66597_read(r8a66597, BEMPSTS)
1554  & r8a66597_read(r8a66597, BEMPENB);
1555  r8a66597_write(r8a66597, ~mask, BEMPSTS);
1556  if (mask & BEMP0) {
1557  cfifo_change(r8a66597, 0);
1558  td = r8a66597_get_td(r8a66597, 0);
1559  if (td && td->type != USB_PID_OUT)
1560  disable_irq_empty(r8a66597, 0);
1561  check_next_phase(r8a66597, 0);
1562  }
1563 
1564  for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1565  check = 1 << pipenum;
1566  if (mask & check) {
1567  struct r8a66597_td *td;
1568  td = r8a66597_get_td(r8a66597, pipenum);
1569  if (unlikely(!td))
1570  continue;
1571 
1572  tmp = r8a66597_read(r8a66597, td->pipe->pipectr);
1573  if ((tmp & INBUFM) == 0) {
1574  disable_irq_empty(r8a66597, pipenum);
1575  pipe_irq_disable(r8a66597, pipenum);
1576  finish_request(r8a66597, td, pipenum, td->urb,
1577  0);
1578  }
1579  }
1580  }
1581 }
1582 
1583 static void irq_pipe_nrdy(struct r8a66597 *r8a66597)
1584 {
1585  u16 check;
1586  u16 pipenum;
1587  u16 mask;
1588  int status;
1589 
1590  mask = r8a66597_read(r8a66597, NRDYSTS)
1591  & r8a66597_read(r8a66597, NRDYENB);
1592  r8a66597_write(r8a66597, ~mask, NRDYSTS);
1593  if (mask & NRDY0) {
1594  cfifo_change(r8a66597, 0);
1595  status = get_urb_error(r8a66597, 0);
1596  pipe_irq_disable(r8a66597, 0);
1597  check_next_phase(r8a66597, status);
1598  }
1599 
1600  for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1601  check = 1 << pipenum;
1602  if (mask & check) {
1603  struct r8a66597_td *td;
1604  td = r8a66597_get_td(r8a66597, pipenum);
1605  if (unlikely(!td))
1606  continue;
1607 
1608  status = get_urb_error(r8a66597, pipenum);
1609  pipe_irq_disable(r8a66597, pipenum);
1610  pipe_stop(r8a66597, td->pipe);
1611  finish_request(r8a66597, td, pipenum, td->urb, status);
1612  }
1613  }
1614 }
1615 
1616 static irqreturn_t r8a66597_irq(struct usb_hcd *hcd)
1617 {
1618  struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1619  u16 intsts0, intsts1, intsts2;
1620  u16 intenb0, intenb1, intenb2;
1621  u16 mask0, mask1, mask2;
1622  int status;
1623 
1624  spin_lock(&r8a66597->lock);
1625 
1626  intsts0 = r8a66597_read(r8a66597, INTSTS0);
1627  intsts1 = r8a66597_read(r8a66597, INTSTS1);
1628  intsts2 = r8a66597_read(r8a66597, INTSTS2);
1629  intenb0 = r8a66597_read(r8a66597, INTENB0);
1630  intenb1 = r8a66597_read(r8a66597, INTENB1);
1631  intenb2 = r8a66597_read(r8a66597, INTENB2);
1632 
1633  mask2 = intsts2 & intenb2;
1634  mask1 = intsts1 & intenb1;
1635  mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY);
1636  if (mask2) {
1637  if (mask2 & ATTCH) {
1638  r8a66597_write(r8a66597, ~ATTCH, INTSTS2);
1639  r8a66597_bclr(r8a66597, ATTCHE, INTENB2);
1640 
1641  /* start usb bus sampling */
1642  start_root_hub_sampling(r8a66597, 1, 1);
1643  }
1644  if (mask2 & DTCH) {
1645  r8a66597_write(r8a66597, ~DTCH, INTSTS2);
1646  r8a66597_bclr(r8a66597, DTCHE, INTENB2);
1647  r8a66597_usb_disconnect(r8a66597, 1);
1648  }
1649  if (mask2 & BCHG) {
1650  r8a66597_write(r8a66597, ~BCHG, INTSTS2);
1651  r8a66597_bclr(r8a66597, BCHGE, INTENB2);
1652  usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597));
1653  }
1654  }
1655 
1656  if (mask1) {
1657  if (mask1 & ATTCH) {
1658  r8a66597_write(r8a66597, ~ATTCH, INTSTS1);
1659  r8a66597_bclr(r8a66597, ATTCHE, INTENB1);
1660 
1661  /* start usb bus sampling */
1662  start_root_hub_sampling(r8a66597, 0, 1);
1663  }
1664  if (mask1 & DTCH) {
1665  r8a66597_write(r8a66597, ~DTCH, INTSTS1);
1666  r8a66597_bclr(r8a66597, DTCHE, INTENB1);
1667  r8a66597_usb_disconnect(r8a66597, 0);
1668  }
1669  if (mask1 & BCHG) {
1670  r8a66597_write(r8a66597, ~BCHG, INTSTS1);
1671  r8a66597_bclr(r8a66597, BCHGE, INTENB1);
1672  usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597));
1673  }
1674 
1675  if (mask1 & SIGN) {
1676  r8a66597_write(r8a66597, ~SIGN, INTSTS1);
1677  status = get_urb_error(r8a66597, 0);
1678  check_next_phase(r8a66597, status);
1679  }
1680  if (mask1 & SACK) {
1681  r8a66597_write(r8a66597, ~SACK, INTSTS1);
1682  check_next_phase(r8a66597, 0);
1683  }
1684  }
1685  if (mask0) {
1686  if (mask0 & BRDY)
1687  irq_pipe_ready(r8a66597);
1688  if (mask0 & BEMP)
1689  irq_pipe_empty(r8a66597);
1690  if (mask0 & NRDY)
1691  irq_pipe_nrdy(r8a66597);
1692  }
1693 
1694  spin_unlock(&r8a66597->lock);
1695  return IRQ_HANDLED;
1696 }
1697 
1698 /* this function must be called with interrupt disabled */
1699 static void r8a66597_root_hub_control(struct r8a66597 *r8a66597, int port)
1700 {
1701  u16 tmp;
1702  struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1703 
1704  if (rh->port & USB_PORT_STAT_RESET) {
1705  unsigned long dvstctr_reg = get_dvstctr_reg(port);
1706 
1707  tmp = r8a66597_read(r8a66597, dvstctr_reg);
1708  if ((tmp & USBRST) == USBRST) {
1709  r8a66597_mdfy(r8a66597, UACT, USBRST | UACT,
1710  dvstctr_reg);
1711  r8a66597_root_hub_start_polling(r8a66597);
1712  } else
1713  r8a66597_usb_connect(r8a66597, port);
1714  }
1715 
1716  if (!(rh->port & USB_PORT_STAT_CONNECTION)) {
1717  r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port));
1718  r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
1719  }
1720 
1721  if (rh->scount > 0) {
1722  tmp = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
1723  if (tmp == rh->old_syssts) {
1724  rh->scount--;
1725  if (rh->scount == 0)
1726  r8a66597_check_syssts(r8a66597, port, tmp);
1727  else
1728  r8a66597_root_hub_start_polling(r8a66597);
1729  } else {
1730  rh->scount = R8A66597_MAX_SAMPLING;
1731  rh->old_syssts = tmp;
1732  r8a66597_root_hub_start_polling(r8a66597);
1733  }
1734  }
1735 }
1736 
1737 static void r8a66597_interval_timer(unsigned long _r8a66597)
1738 {
1739  struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1740  unsigned long flags;
1741  u16 pipenum;
1742  struct r8a66597_td *td;
1743 
1744  spin_lock_irqsave(&r8a66597->lock, flags);
1745 
1746  for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1747  if (!(r8a66597->interval_map & (1 << pipenum)))
1748  continue;
1749  if (timer_pending(&r8a66597->interval_timer[pipenum]))
1750  continue;
1751 
1752  td = r8a66597_get_td(r8a66597, pipenum);
1753  if (td)
1754  start_transfer(r8a66597, td);
1755  }
1756 
1757  spin_unlock_irqrestore(&r8a66597->lock, flags);
1758 }
1759 
1760 static void r8a66597_td_timer(unsigned long _r8a66597)
1761 {
1762  struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1763  unsigned long flags;
1764  u16 pipenum;
1765  struct r8a66597_td *td, *new_td = NULL;
1766  struct r8a66597_pipe *pipe;
1767 
1768  spin_lock_irqsave(&r8a66597->lock, flags);
1769  for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1770  if (!(r8a66597->timeout_map & (1 << pipenum)))
1771  continue;
1772  if (timer_pending(&r8a66597->td_timer[pipenum]))
1773  continue;
1774 
1775  td = r8a66597_get_td(r8a66597, pipenum);
1776  if (!td) {
1777  r8a66597->timeout_map &= ~(1 << pipenum);
1778  continue;
1779  }
1780 
1781  if (td->urb->actual_length) {
1782  set_td_timer(r8a66597, td);
1783  break;
1784  }
1785 
1786  pipe = td->pipe;
1787  pipe_stop(r8a66597, pipe);
1788 
1789  new_td = td;
1790  do {
1791  list_move_tail(&new_td->queue,
1792  &r8a66597->pipe_queue[pipenum]);
1793  new_td = r8a66597_get_td(r8a66597, pipenum);
1794  if (!new_td) {
1795  new_td = td;
1796  break;
1797  }
1798  } while (td != new_td && td->address == new_td->address);
1799 
1800  start_transfer(r8a66597, new_td);
1801 
1802  if (td == new_td)
1803  r8a66597->timeout_map &= ~(1 << pipenum);
1804  else
1805  set_td_timer(r8a66597, new_td);
1806  break;
1807  }
1808  spin_unlock_irqrestore(&r8a66597->lock, flags);
1809 }
1810 
1811 static void r8a66597_timer(unsigned long _r8a66597)
1812 {
1813  struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1814  unsigned long flags;
1815  int port;
1816 
1817  spin_lock_irqsave(&r8a66597->lock, flags);
1818 
1819  for (port = 0; port < r8a66597->max_root_hub; port++)
1820  r8a66597_root_hub_control(r8a66597, port);
1821 
1822  spin_unlock_irqrestore(&r8a66597->lock, flags);
1823 }
1824 
1825 static int check_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
1826 {
1827  struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
1828 
1829  if (dev && dev->address && dev->state != USB_STATE_CONFIGURED &&
1830  (urb->dev->state == USB_STATE_CONFIGURED))
1831  return 1;
1832  else
1833  return 0;
1834 }
1835 
1836 static int r8a66597_start(struct usb_hcd *hcd)
1837 {
1838  struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1839 
1840  hcd->state = HC_STATE_RUNNING;
1841  return enable_controller(r8a66597);
1842 }
1843 
1844 static void r8a66597_stop(struct usb_hcd *hcd)
1845 {
1846  struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1847 
1848  disable_controller(r8a66597);
1849 }
1850 
1851 static void set_address_zero(struct r8a66597 *r8a66597, struct urb *urb)
1852 {
1853  unsigned int usb_address = usb_pipedevice(urb->pipe);
1854  u16 root_port, hub_port;
1855 
1856  if (usb_address == 0) {
1857  get_port_number(r8a66597, urb->dev->devpath,
1858  &root_port, &hub_port);
1859  set_devadd_reg(r8a66597, 0,
1860  get_r8a66597_usb_speed(urb->dev->speed),
1861  get_parent_r8a66597_address(r8a66597, urb->dev),
1862  hub_port, root_port);
1863  }
1864 }
1865 
1866 static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597,
1867  struct urb *urb,
1868  struct usb_host_endpoint *hep)
1869 {
1870  struct r8a66597_td *td;
1871  u16 pipenum;
1872 
1873  td = kzalloc(sizeof(struct r8a66597_td), GFP_ATOMIC);
1874  if (td == NULL)
1875  return NULL;
1876 
1877  pipenum = r8a66597_get_pipenum(urb, hep);
1878  td->pipenum = pipenum;
1879  td->pipe = hep->hcpriv;
1880  td->urb = urb;
1881  td->address = get_urb_to_r8a66597_addr(r8a66597, urb);
1882  td->maxpacket = usb_maxpacket(urb->dev, urb->pipe,
1883  !usb_pipein(urb->pipe));
1884  if (usb_pipecontrol(urb->pipe))
1885  td->type = USB_PID_SETUP;
1886  else if (usb_pipein(urb->pipe))
1887  td->type = USB_PID_IN;
1888  else
1889  td->type = USB_PID_OUT;
1890  INIT_LIST_HEAD(&td->queue);
1891 
1892  return td;
1893 }
1894 
1895 static int r8a66597_urb_enqueue(struct usb_hcd *hcd,
1896  struct urb *urb,
1897  gfp_t mem_flags)
1898 {
1899  struct usb_host_endpoint *hep = urb->ep;
1900  struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1901  struct r8a66597_td *td = NULL;
1902  int ret, request = 0;
1903  unsigned long flags;
1904 
1905  spin_lock_irqsave(&r8a66597->lock, flags);
1906  if (!get_urb_to_r8a66597_dev(r8a66597, urb)) {
1907  ret = -ENODEV;
1908  goto error_not_linked;
1909  }
1910 
1911  ret = usb_hcd_link_urb_to_ep(hcd, urb);
1912  if (ret)
1913  goto error_not_linked;
1914 
1915  if (!hep->hcpriv) {
1916  hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe),
1917  GFP_ATOMIC);
1918  if (!hep->hcpriv) {
1919  ret = -ENOMEM;
1920  goto error;
1921  }
1922  set_pipe_reg_addr(hep->hcpriv, R8A66597_PIPE_NO_DMA);
1923  if (usb_pipeendpoint(urb->pipe))
1924  init_pipe_info(r8a66597, urb, hep, &hep->desc);
1925  }
1926 
1927  if (unlikely(check_pipe_config(r8a66597, urb)))
1928  init_pipe_config(r8a66597, urb);
1929 
1930  set_address_zero(r8a66597, urb);
1931  td = r8a66597_make_td(r8a66597, urb, hep);
1932  if (td == NULL) {
1933  ret = -ENOMEM;
1934  goto error;
1935  }
1936  if (list_empty(&r8a66597->pipe_queue[td->pipenum]))
1937  request = 1;
1938  list_add_tail(&td->queue, &r8a66597->pipe_queue[td->pipenum]);
1939  urb->hcpriv = td;
1940 
1941  if (request) {
1942  if (td->pipe->info.timer_interval) {
1943  r8a66597->interval_map |= 1 << td->pipenum;
1944  mod_timer(&r8a66597->interval_timer[td->pipenum],
1945  jiffies + msecs_to_jiffies(
1946  td->pipe->info.timer_interval));
1947  } else {
1948  ret = start_transfer(r8a66597, td);
1949  if (ret < 0) {
1950  list_del(&td->queue);
1951  kfree(td);
1952  }
1953  }
1954  } else
1955  set_td_timer(r8a66597, td);
1956 
1957 error:
1958  if (ret)
1959  usb_hcd_unlink_urb_from_ep(hcd, urb);
1960 error_not_linked:
1961  spin_unlock_irqrestore(&r8a66597->lock, flags);
1962  return ret;
1963 }
1964 
1965 static int r8a66597_urb_dequeue(struct usb_hcd *hcd, struct urb *urb,
1966  int status)
1967 {
1968  struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1969  struct r8a66597_td *td;
1970  unsigned long flags;
1971  int rc;
1972 
1973  spin_lock_irqsave(&r8a66597->lock, flags);
1974  rc = usb_hcd_check_unlink_urb(hcd, urb, status);
1975  if (rc)
1976  goto done;
1977 
1978  if (urb->hcpriv) {
1979  td = urb->hcpriv;
1980  pipe_stop(r8a66597, td->pipe);
1981  pipe_irq_disable(r8a66597, td->pipenum);
1982  disable_irq_empty(r8a66597, td->pipenum);
1983  finish_request(r8a66597, td, td->pipenum, urb, status);
1984  }
1985  done:
1986  spin_unlock_irqrestore(&r8a66597->lock, flags);
1987  return rc;
1988 }
1989 
1990 static void r8a66597_endpoint_disable(struct usb_hcd *hcd,
1991  struct usb_host_endpoint *hep)
1992 {
1993  struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1994  struct r8a66597_pipe *pipe = (struct r8a66597_pipe *)hep->hcpriv;
1995  struct r8a66597_td *td;
1996  struct urb *urb = NULL;
1997  u16 pipenum;
1998  unsigned long flags;
1999 
2000  if (pipe == NULL)
2001  return;
2002  pipenum = pipe->info.pipenum;
2003 
2004  if (pipenum == 0) {
2005  kfree(hep->hcpriv);
2006  hep->hcpriv = NULL;
2007  return;
2008  }
2009 
2010  spin_lock_irqsave(&r8a66597->lock, flags);
2011  pipe_stop(r8a66597, pipe);
2012  pipe_irq_disable(r8a66597, pipenum);
2013  disable_irq_empty(r8a66597, pipenum);
2014  td = r8a66597_get_td(r8a66597, pipenum);
2015  if (td)
2016  urb = td->urb;
2017  finish_request(r8a66597, td, pipenum, urb, -ESHUTDOWN);
2018  kfree(hep->hcpriv);
2019  hep->hcpriv = NULL;
2020  spin_unlock_irqrestore(&r8a66597->lock, flags);
2021 }
2022 
2023 static int r8a66597_get_frame(struct usb_hcd *hcd)
2024 {
2025  struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2026  return r8a66597_read(r8a66597, FRMNUM) & 0x03FF;
2027 }
2028 
2029 static void collect_usb_address_map(struct usb_device *udev, unsigned long *map)
2030 {
2031  int chix;
2032  struct usb_device *childdev;
2033 
2034  if (udev->state == USB_STATE_CONFIGURED &&
2035  udev->parent && udev->parent->devnum > 1 &&
2036  udev->parent->descriptor.bDeviceClass == USB_CLASS_HUB)
2037  map[udev->devnum/32] |= (1 << (udev->devnum % 32));
2038 
2039  usb_hub_for_each_child(udev, chix, childdev) {
2040  if (childdev)
2041  collect_usb_address_map(childdev, map);
2042  }
2043 }
2044 
2045 /* this function must be called with interrupt disabled */
2046 static struct r8a66597_device *get_r8a66597_device(struct r8a66597 *r8a66597,
2047  int addr)
2048 {
2049  struct r8a66597_device *dev;
2050  struct list_head *list = &r8a66597->child_device;
2051 
2052  list_for_each_entry(dev, list, device_list) {
2053  if (dev->usb_address != addr)
2054  continue;
2055 
2056  return dev;
2057  }
2058 
2059  printk(KERN_ERR "r8a66597: get_r8a66597_device fail.(%d)\n", addr);
2060  return NULL;
2061 }
2062 
2063 static void update_usb_address_map(struct r8a66597 *r8a66597,
2064  struct usb_device *root_hub,
2065  unsigned long *map)
2066 {
2067  int i, j, addr;
2068  unsigned long diff;
2069  unsigned long flags;
2070 
2071  for (i = 0; i < 4; i++) {
2072  diff = r8a66597->child_connect_map[i] ^ map[i];
2073  if (!diff)
2074  continue;
2075 
2076  for (j = 0; j < 32; j++) {
2077  if (!(diff & (1 << j)))
2078  continue;
2079 
2080  addr = i * 32 + j;
2081  if (map[i] & (1 << j))
2082  set_child_connect_map(r8a66597, addr);
2083  else {
2084  struct r8a66597_device *dev;
2085 
2086  spin_lock_irqsave(&r8a66597->lock, flags);
2087  dev = get_r8a66597_device(r8a66597, addr);
2088  disable_r8a66597_pipe_all(r8a66597, dev);
2089  free_usb_address(r8a66597, dev, 0);
2090  put_child_connect_map(r8a66597, addr);
2091  spin_unlock_irqrestore(&r8a66597->lock, flags);
2092  }
2093  }
2094  }
2095 }
2096 
2097 static void r8a66597_check_detect_child(struct r8a66597 *r8a66597,
2098  struct usb_hcd *hcd)
2099 {
2100  struct usb_bus *bus;
2101  unsigned long now_map[4];
2102 
2103  memset(now_map, 0, sizeof(now_map));
2104 
2105  list_for_each_entry(bus, &usb_bus_list, bus_list) {
2106  if (!bus->root_hub)
2107  continue;
2108 
2109  if (bus->busnum != hcd->self.busnum)
2110  continue;
2111 
2112  collect_usb_address_map(bus->root_hub, now_map);
2113  update_usb_address_map(r8a66597, bus->root_hub, now_map);
2114  }
2115 }
2116 
2117 static int r8a66597_hub_status_data(struct usb_hcd *hcd, char *buf)
2118 {
2119  struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2120  unsigned long flags;
2121  int i;
2122 
2123  r8a66597_check_detect_child(r8a66597, hcd);
2124 
2125  spin_lock_irqsave(&r8a66597->lock, flags);
2126 
2127  *buf = 0; /* initialize (no change) */
2128 
2129  for (i = 0; i < r8a66597->max_root_hub; i++) {
2130  if (r8a66597->root_hub[i].port & 0xffff0000)
2131  *buf |= 1 << (i + 1);
2132  }
2133 
2134  spin_unlock_irqrestore(&r8a66597->lock, flags);
2135 
2136  return (*buf != 0);
2137 }
2138 
2139 static void r8a66597_hub_descriptor(struct r8a66597 *r8a66597,
2140  struct usb_hub_descriptor *desc)
2141 {
2142  desc->bDescriptorType = 0x29;
2143  desc->bHubContrCurrent = 0;
2144  desc->bNbrPorts = r8a66597->max_root_hub;
2145  desc->bDescLength = 9;
2146  desc->bPwrOn2PwrGood = 0;
2147  desc->wHubCharacteristics = cpu_to_le16(0x0011);
2148  desc->u.hs.DeviceRemovable[0] =
2149  ((1 << r8a66597->max_root_hub) - 1) << 1;
2150  desc->u.hs.DeviceRemovable[1] = ~0;
2151 }
2152 
2153 static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
2154  u16 wIndex, char *buf, u16 wLength)
2155 {
2156  struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2157  int ret;
2158  int port = (wIndex & 0x00FF) - 1;
2159  struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
2160  unsigned long flags;
2161 
2162  ret = 0;
2163 
2164  spin_lock_irqsave(&r8a66597->lock, flags);
2165  switch (typeReq) {
2166  case ClearHubFeature:
2167  case SetHubFeature:
2168  switch (wValue) {
2169  case C_HUB_OVER_CURRENT:
2170  case C_HUB_LOCAL_POWER:
2171  break;
2172  default:
2173  goto error;
2174  }
2175  break;
2176  case ClearPortFeature:
2177  if (wIndex > r8a66597->max_root_hub)
2178  goto error;
2179  if (wLength != 0)
2180  goto error;
2181 
2182  switch (wValue) {
2183  case USB_PORT_FEAT_ENABLE:
2184  rh->port &= ~USB_PORT_STAT_POWER;
2185  break;
2186  case USB_PORT_FEAT_SUSPEND:
2187  break;
2188  case USB_PORT_FEAT_POWER:
2189  r8a66597_port_power(r8a66597, port, 0);
2190  break;
2191  case USB_PORT_FEAT_C_ENABLE:
2192  case USB_PORT_FEAT_C_SUSPEND:
2193  case USB_PORT_FEAT_C_CONNECTION:
2194  case USB_PORT_FEAT_C_OVER_CURRENT:
2195  case USB_PORT_FEAT_C_RESET:
2196  break;
2197  default:
2198  goto error;
2199  }
2200  rh->port &= ~(1 << wValue);
2201  break;
2202  case GetHubDescriptor:
2203  r8a66597_hub_descriptor(r8a66597,
2204  (struct usb_hub_descriptor *)buf);
2205  break;
2206  case GetHubStatus:
2207  *buf = 0x00;
2208  break;
2209  case GetPortStatus:
2210  if (wIndex > r8a66597->max_root_hub)
2211  goto error;
2212  *(__le32 *)buf = cpu_to_le32(rh->port);
2213  break;
2214  case SetPortFeature:
2215  if (wIndex > r8a66597->max_root_hub)
2216  goto error;
2217  if (wLength != 0)
2218  goto error;
2219 
2220  switch (wValue) {
2221  case USB_PORT_FEAT_SUSPEND:
2222  break;
2223  case USB_PORT_FEAT_POWER:
2224  r8a66597_port_power(r8a66597, port, 1);
2225  rh->port |= USB_PORT_STAT_POWER;
2226  break;
2227  case USB_PORT_FEAT_RESET: {
2228  struct r8a66597_device *dev = rh->dev;
2229 
2230  rh->port |= USB_PORT_STAT_RESET;
2231 
2232  disable_r8a66597_pipe_all(r8a66597, dev);
2233  free_usb_address(r8a66597, dev, 1);
2234 
2235  r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT,
2236  get_dvstctr_reg(port));
2237  mod_timer(&r8a66597->rh_timer,
2238  jiffies + msecs_to_jiffies(50));
2239  }
2240  break;
2241  default:
2242  goto error;
2243  }
2244  rh->port |= 1 << wValue;
2245  break;
2246  default:
2247 error:
2248  ret = -EPIPE;
2249  break;
2250  }
2251 
2252  spin_unlock_irqrestore(&r8a66597->lock, flags);
2253  return ret;
2254 }
2255 
2256 #if defined(CONFIG_PM)
2257 static int r8a66597_bus_suspend(struct usb_hcd *hcd)
2258 {
2259  struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2260  int port;
2261 
2262  dev_dbg(&r8a66597->device0.udev->dev, "%s\n", __func__);
2263 
2264  for (port = 0; port < r8a66597->max_root_hub; port++) {
2265  struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
2266  unsigned long dvstctr_reg = get_dvstctr_reg(port);
2267 
2268  if (!(rh->port & USB_PORT_STAT_ENABLE))
2269  continue;
2270 
2271  dev_dbg(&rh->dev->udev->dev, "suspend port = %d\n", port);
2272  r8a66597_bclr(r8a66597, UACT, dvstctr_reg); /* suspend */
2273  rh->port |= USB_PORT_STAT_SUSPEND;
2274 
2275  if (rh->dev->udev->do_remote_wakeup) {
2276  msleep(3); /* waiting last SOF */
2277  r8a66597_bset(r8a66597, RWUPE, dvstctr_reg);
2278  r8a66597_write(r8a66597, ~BCHG, get_intsts_reg(port));
2279  r8a66597_bset(r8a66597, BCHGE, get_intenb_reg(port));
2280  }
2281  }
2282 
2283  r8a66597->bus_suspended = 1;
2284 
2285  return 0;
2286 }
2287 
2288 static int r8a66597_bus_resume(struct usb_hcd *hcd)
2289 {
2290  struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2291  int port;
2292 
2293  dev_dbg(&r8a66597->device0.udev->dev, "%s\n", __func__);
2294 
2295  for (port = 0; port < r8a66597->max_root_hub; port++) {
2296  struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
2297  unsigned long dvstctr_reg = get_dvstctr_reg(port);
2298 
2299  if (!(rh->port & USB_PORT_STAT_SUSPEND))
2300  continue;
2301 
2302  dev_dbg(&rh->dev->udev->dev, "resume port = %d\n", port);
2303  rh->port &= ~USB_PORT_STAT_SUSPEND;
2304  rh->port |= USB_PORT_STAT_C_SUSPEND << 16;
2305  r8a66597_mdfy(r8a66597, RESUME, RESUME | UACT, dvstctr_reg);
2306  msleep(50);
2307  r8a66597_mdfy(r8a66597, UACT, RESUME | UACT, dvstctr_reg);
2308  }
2309 
2310  return 0;
2311 
2312 }
2313 #else
2314 #define r8a66597_bus_suspend NULL
2315 #define r8a66597_bus_resume NULL
2316 #endif
2317 
2318 static struct hc_driver r8a66597_hc_driver = {
2319  .description = hcd_name,
2320  .hcd_priv_size = sizeof(struct r8a66597),
2321  .irq = r8a66597_irq,
2322 
2323  /*
2324  * generic hardware linkage
2325  */
2326  .flags = HCD_USB2,
2327 
2328  .start = r8a66597_start,
2329  .stop = r8a66597_stop,
2330 
2331  /*
2332  * managing i/o requests and associated device resources
2333  */
2334  .urb_enqueue = r8a66597_urb_enqueue,
2335  .urb_dequeue = r8a66597_urb_dequeue,
2336  .endpoint_disable = r8a66597_endpoint_disable,
2337 
2338  /*
2339  * periodic schedule support
2340  */
2341  .get_frame_number = r8a66597_get_frame,
2342 
2343  /*
2344  * root hub support
2345  */
2346  .hub_status_data = r8a66597_hub_status_data,
2347  .hub_control = r8a66597_hub_control,
2348  .bus_suspend = r8a66597_bus_suspend,
2349  .bus_resume = r8a66597_bus_resume,
2350 };
2351 
2352 #if defined(CONFIG_PM)
2353 static int r8a66597_suspend(struct device *dev)
2354 {
2355  struct r8a66597 *r8a66597 = dev_get_drvdata(dev);
2356  int port;
2357 
2358  dev_dbg(dev, "%s\n", __func__);
2359 
2360  disable_controller(r8a66597);
2361 
2362  for (port = 0; port < r8a66597->max_root_hub; port++) {
2363  struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
2364 
2365  rh->port = 0x00000000;
2366  }
2367 
2368  return 0;
2369 }
2370 
2371 static int r8a66597_resume(struct device *dev)
2372 {
2373  struct r8a66597 *r8a66597 = dev_get_drvdata(dev);
2374  struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
2375 
2376  dev_dbg(dev, "%s\n", __func__);
2377 
2378  enable_controller(r8a66597);
2379  usb_root_hub_lost_power(hcd->self.root_hub);
2380 
2381  return 0;
2382 }
2383 
2384 static const struct dev_pm_ops r8a66597_dev_pm_ops = {
2385  .suspend = r8a66597_suspend,
2386  .resume = r8a66597_resume,
2387  .poweroff = r8a66597_suspend,
2388  .restore = r8a66597_resume,
2389 };
2390 
2391 #define R8A66597_DEV_PM_OPS (&r8a66597_dev_pm_ops)
2392 #else /* if defined(CONFIG_PM) */
2393 #define R8A66597_DEV_PM_OPS NULL
2394 #endif
2395 
2396 static int __devexit r8a66597_remove(struct platform_device *pdev)
2397 {
2398  struct r8a66597 *r8a66597 = dev_get_drvdata(&pdev->dev);
2399  struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
2400 
2401  del_timer_sync(&r8a66597->rh_timer);
2402  usb_remove_hcd(hcd);
2403  iounmap(r8a66597->reg);
2404  if (r8a66597->pdata->on_chip)
2405  clk_put(r8a66597->clk);
2406  usb_put_hcd(hcd);
2407  return 0;
2408 }
2409 
2410 static int __devinit r8a66597_probe(struct platform_device *pdev)
2411 {
2412  char clk_name[8];
2413  struct resource *res = NULL, *ires;
2414  int irq = -1;
2415  void __iomem *reg = NULL;
2416  struct usb_hcd *hcd = NULL;
2417  struct r8a66597 *r8a66597;
2418  int ret = 0;
2419  int i;
2420  unsigned long irq_trigger;
2421 
2422  if (usb_disabled())
2423  return -ENODEV;
2424 
2425  if (pdev->dev.dma_mask) {
2426  ret = -EINVAL;
2427  dev_err(&pdev->dev, "dma not supported\n");
2428  goto clean_up;
2429  }
2430 
2431  res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2432  if (!res) {
2433  ret = -ENODEV;
2434  dev_err(&pdev->dev, "platform_get_resource error.\n");
2435  goto clean_up;
2436  }
2437 
2438  ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
2439  if (!ires) {
2440  ret = -ENODEV;
2441  dev_err(&pdev->dev,
2442  "platform_get_resource IORESOURCE_IRQ error.\n");
2443  goto clean_up;
2444  }
2445 
2446  irq = ires->start;
2447  irq_trigger = ires->flags & IRQF_TRIGGER_MASK;
2448 
2449  reg = ioremap(res->start, resource_size(res));
2450  if (reg == NULL) {
2451  ret = -ENOMEM;
2452  dev_err(&pdev->dev, "ioremap error.\n");
2453  goto clean_up;
2454  }
2455 
2456  if (pdev->dev.platform_data == NULL) {
2457  dev_err(&pdev->dev, "no platform data\n");
2458  ret = -ENODEV;
2459  goto clean_up;
2460  }
2461 
2462  /* initialize hcd */
2463  hcd = usb_create_hcd(&r8a66597_hc_driver, &pdev->dev, (char *)hcd_name);
2464  if (!hcd) {
2465  ret = -ENOMEM;
2466  dev_err(&pdev->dev, "Failed to create hcd\n");
2467  goto clean_up;
2468  }
2469  r8a66597 = hcd_to_r8a66597(hcd);
2470  memset(r8a66597, 0, sizeof(struct r8a66597));
2471  dev_set_drvdata(&pdev->dev, r8a66597);
2472  r8a66597->pdata = pdev->dev.platform_data;
2473  r8a66597->irq_sense_low = irq_trigger == IRQF_TRIGGER_LOW;
2474 
2475  if (r8a66597->pdata->on_chip) {
2476  snprintf(clk_name, sizeof(clk_name), "usb%d", pdev->id);
2477  r8a66597->clk = clk_get(&pdev->dev, clk_name);
2478  if (IS_ERR(r8a66597->clk)) {
2479  dev_err(&pdev->dev, "cannot get clock \"%s\"\n",
2480  clk_name);
2481  ret = PTR_ERR(r8a66597->clk);
2482  goto clean_up2;
2483  }
2484  r8a66597->max_root_hub = 1;
2485  } else
2486  r8a66597->max_root_hub = 2;
2487 
2488  spin_lock_init(&r8a66597->lock);
2489  init_timer(&r8a66597->rh_timer);
2490  r8a66597->rh_timer.function = r8a66597_timer;
2491  r8a66597->rh_timer.data = (unsigned long)r8a66597;
2492  r8a66597->reg = reg;
2493 
2494  /* make sure no interrupts are pending */
2495  ret = r8a66597_clock_enable(r8a66597);
2496  if (ret < 0)
2497  goto clean_up3;
2498  disable_controller(r8a66597);
2499 
2500  for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) {
2501  INIT_LIST_HEAD(&r8a66597->pipe_queue[i]);
2502  init_timer(&r8a66597->td_timer[i]);
2503  r8a66597->td_timer[i].function = r8a66597_td_timer;
2504  r8a66597->td_timer[i].data = (unsigned long)r8a66597;
2505  setup_timer(&r8a66597->interval_timer[i],
2506  r8a66597_interval_timer,
2507  (unsigned long)r8a66597);
2508  }
2509  INIT_LIST_HEAD(&r8a66597->child_device);
2510 
2511  hcd->rsrc_start = res->start;
2512  hcd->has_tt = 1;
2513 
2514  ret = usb_add_hcd(hcd, irq, irq_trigger);
2515  if (ret != 0) {
2516  dev_err(&pdev->dev, "Failed to add hcd\n");
2517  goto clean_up3;
2518  }
2519 
2520  return 0;
2521 
2522 clean_up3:
2523  if (r8a66597->pdata->on_chip)
2524  clk_put(r8a66597->clk);
2525 clean_up2:
2526  usb_put_hcd(hcd);
2527 
2528 clean_up:
2529  if (reg)
2530  iounmap(reg);
2531 
2532  return ret;
2533 }
2534 
2535 static struct platform_driver r8a66597_driver = {
2536  .probe = r8a66597_probe,
2537  .remove = __devexit_p(r8a66597_remove),
2538  .driver = {
2539  .name = (char *) hcd_name,
2540  .owner = THIS_MODULE,
2541  .pm = R8A66597_DEV_PM_OPS,
2542  },
2543 };
2544 
2545 module_platform_driver(r8a66597_driver);
Generated on Thu Jan 10 2013 14:37:14 for Linux Kernel by   doxygen 1.8.2