USB: r8a66597-hcd: suspend/resume support
[linux-2.6] / 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/smp_lock.h>
30 #include <linux/errno.h>
31 #include <linux/init.h>
32 #include <linux/timer.h>
33 #include <linux/delay.h>
34 #include <linux/list.h>
35 #include <linux/interrupt.h>
36 #include <linux/usb.h>
37 #include <linux/platform_device.h>
38 #include <linux/io.h>
39 #include <linux/irq.h>
40
41 #include "../core/hcd.h"
42 #include "r8a66597.h"
43
44 MODULE_DESCRIPTION("R8A66597 USB Host Controller Driver");
45 MODULE_LICENSE("GPL");
46 MODULE_AUTHOR("Yoshihiro Shimoda");
47 MODULE_ALIAS("platform:r8a66597_hcd");
48
49 #define DRIVER_VERSION  "10 Apr 2008"
50
51 static const char hcd_name[] = "r8a66597_hcd";
52
53 /* module parameters */
54 #if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
55 static unsigned short clock = XTAL12;
56 module_param(clock, ushort, 0644);
57 MODULE_PARM_DESC(clock, "input clock: 48MHz=32768, 24MHz=16384, 12MHz=0 "
58                 "(default=0)");
59 #endif
60
61 static unsigned short vif = LDRV;
62 module_param(vif, ushort, 0644);
63 MODULE_PARM_DESC(vif, "input VIF: 3.3V=32768, 1.5V=0(default=32768)");
64
65 static unsigned short endian;
66 module_param(endian, ushort, 0644);
67 MODULE_PARM_DESC(endian, "data endian: big=256, little=0 (default=0)");
68
69 static unsigned short irq_sense = 0xff;
70 module_param(irq_sense, ushort, 0644);
71 MODULE_PARM_DESC(irq_sense, "IRQ sense: low level=32, falling edge=0 "
72                 "(default=32)");
73
74 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum);
75 static int r8a66597_get_frame(struct usb_hcd *hcd);
76
77 /* this function must be called with interrupt disabled */
78 static void enable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
79                             unsigned long reg)
80 {
81         u16 tmp;
82
83         tmp = r8a66597_read(r8a66597, INTENB0);
84         r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
85         r8a66597_bset(r8a66597, 1 << pipenum, reg);
86         r8a66597_write(r8a66597, tmp, INTENB0);
87 }
88
89 /* this function must be called with interrupt disabled */
90 static void disable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
91                              unsigned long reg)
92 {
93         u16 tmp;
94
95         tmp = r8a66597_read(r8a66597, INTENB0);
96         r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
97         r8a66597_bclr(r8a66597, 1 << pipenum, reg);
98         r8a66597_write(r8a66597, tmp, INTENB0);
99 }
100
101 static void set_devadd_reg(struct r8a66597 *r8a66597, u8 r8a66597_address,
102                            u16 usbspd, u8 upphub, u8 hubport, int port)
103 {
104         u16 val;
105         unsigned long devadd_reg = get_devadd_addr(r8a66597_address);
106
107         val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001);
108         r8a66597_write(r8a66597, val, devadd_reg);
109 }
110
111 static int r8a66597_clock_enable(struct r8a66597 *r8a66597)
112 {
113         u16 tmp;
114         int i = 0;
115
116 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
117 #if defined(CONFIG_HAVE_CLK)
118         clk_enable(r8a66597->clk);
119 #endif
120         do {
121                 r8a66597_write(r8a66597, SCKE, SYSCFG0);
122                 tmp = r8a66597_read(r8a66597, SYSCFG0);
123                 if (i++ > 1000) {
124                         printk(KERN_ERR "r8a66597: register access fail.\n");
125                         return -ENXIO;
126                 }
127         } while ((tmp & SCKE) != SCKE);
128         r8a66597_write(r8a66597, 0x04, 0x02);
129 #else
130         do {
131                 r8a66597_write(r8a66597, USBE, SYSCFG0);
132                 tmp = r8a66597_read(r8a66597, SYSCFG0);
133                 if (i++ > 1000) {
134                         printk(KERN_ERR "r8a66597: register access fail.\n");
135                         return -ENXIO;
136                 }
137         } while ((tmp & USBE) != USBE);
138         r8a66597_bclr(r8a66597, USBE, SYSCFG0);
139         r8a66597_mdfy(r8a66597, clock, XTAL, SYSCFG0);
140
141         i = 0;
142         r8a66597_bset(r8a66597, XCKE, SYSCFG0);
143         do {
144                 msleep(1);
145                 tmp = r8a66597_read(r8a66597, SYSCFG0);
146                 if (i++ > 500) {
147                         printk(KERN_ERR "r8a66597: register access fail.\n");
148                         return -ENXIO;
149                 }
150         } while ((tmp & SCKE) != SCKE);
151 #endif  /* #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) */
152
153         return 0;
154 }
155
156 static void r8a66597_clock_disable(struct r8a66597 *r8a66597)
157 {
158         r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
159         udelay(1);
160 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
161 #if defined(CONFIG_HAVE_CLK)
162         clk_disable(r8a66597->clk);
163 #endif
164 #else
165         r8a66597_bclr(r8a66597, PLLC, SYSCFG0);
166         r8a66597_bclr(r8a66597, XCKE, SYSCFG0);
167         r8a66597_bclr(r8a66597, USBE, SYSCFG0);
168 #endif
169 }
170
171 static void r8a66597_enable_port(struct r8a66597 *r8a66597, int port)
172 {
173         u16 val;
174
175         val = port ? DRPD : DCFM | DRPD;
176         r8a66597_bset(r8a66597, val, get_syscfg_reg(port));
177         r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port));
178
179         r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, get_dmacfg_reg(port));
180         r8a66597_bclr(r8a66597, DTCHE, get_intenb_reg(port));
181         r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
182 }
183
184 static void r8a66597_disable_port(struct r8a66597 *r8a66597, int port)
185 {
186         u16 val, tmp;
187
188         r8a66597_write(r8a66597, 0, get_intenb_reg(port));
189         r8a66597_write(r8a66597, 0, get_intsts_reg(port));
190
191         r8a66597_port_power(r8a66597, port, 0);
192
193         do {
194                 tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS;
195                 udelay(640);
196         } while (tmp == EDGESTS);
197
198         val = port ? DRPD : DCFM | DRPD;
199         r8a66597_bclr(r8a66597, val, get_syscfg_reg(port));
200         r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port));
201 }
202
203 static int enable_controller(struct r8a66597 *r8a66597)
204 {
205         int ret, port;
206
207         ret = r8a66597_clock_enable(r8a66597);
208         if (ret < 0)
209                 return ret;
210
211         r8a66597_bset(r8a66597, vif & LDRV, PINCFG);
212         r8a66597_bset(r8a66597, USBE, SYSCFG0);
213
214         r8a66597_bset(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
215         r8a66597_bset(r8a66597, irq_sense & INTL, SOFCFG);
216         r8a66597_bset(r8a66597, BRDY0, BRDYENB);
217         r8a66597_bset(r8a66597, BEMP0, BEMPENB);
218
219         r8a66597_bset(r8a66597, endian & BIGEND, CFIFOSEL);
220         r8a66597_bset(r8a66597, endian & BIGEND, D0FIFOSEL);
221         r8a66597_bset(r8a66597, endian & BIGEND, D1FIFOSEL);
222         r8a66597_bset(r8a66597, TRNENSEL, SOFCFG);
223
224         r8a66597_bset(r8a66597, SIGNE | SACKE, INTENB1);
225
226         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
227                 r8a66597_enable_port(r8a66597, port);
228
229         return 0;
230 }
231
232 static void disable_controller(struct r8a66597 *r8a66597)
233 {
234         int port;
235
236         r8a66597_write(r8a66597, 0, INTENB0);
237         r8a66597_write(r8a66597, 0, INTSTS0);
238
239         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
240                 r8a66597_disable_port(r8a66597, port);
241
242         r8a66597_clock_disable(r8a66597);
243 }
244
245 static int get_parent_r8a66597_address(struct r8a66597 *r8a66597,
246                                        struct usb_device *udev)
247 {
248         struct r8a66597_device *dev;
249
250         if (udev->parent && udev->parent->devnum != 1)
251                 udev = udev->parent;
252
253         dev = dev_get_drvdata(&udev->dev);
254         if (dev)
255                 return dev->address;
256         else
257                 return 0;
258 }
259
260 static int is_child_device(char *devpath)
261 {
262         return (devpath[2] ? 1 : 0);
263 }
264
265 static int is_hub_limit(char *devpath)
266 {
267         return ((strlen(devpath) >= 4) ? 1 : 0);
268 }
269
270 static void get_port_number(char *devpath, u16 *root_port, u16 *hub_port)
271 {
272         if (root_port) {
273                 *root_port = (devpath[0] & 0x0F) - 1;
274                 if (*root_port >= R8A66597_MAX_ROOT_HUB)
275                         printk(KERN_ERR "r8a66597: Illegal root port number.\n");
276         }
277         if (hub_port)
278                 *hub_port = devpath[2] & 0x0F;
279 }
280
281 static u16 get_r8a66597_usb_speed(enum usb_device_speed speed)
282 {
283         u16 usbspd = 0;
284
285         switch (speed) {
286         case USB_SPEED_LOW:
287                 usbspd = LSMODE;
288                 break;
289         case USB_SPEED_FULL:
290                 usbspd = FSMODE;
291                 break;
292         case USB_SPEED_HIGH:
293                 usbspd = HSMODE;
294                 break;
295         default:
296                 printk(KERN_ERR "r8a66597: unknown speed\n");
297                 break;
298         }
299
300         return usbspd;
301 }
302
303 static void set_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 put_child_connect_map(struct r8a66597 *r8a66597, int address)
312 {
313         int idx;
314
315         idx = address / 32;
316         r8a66597->child_connect_map[idx] &= ~(1 << (address % 32));
317 }
318
319 static void set_pipe_reg_addr(struct r8a66597_pipe *pipe, u8 dma_ch)
320 {
321         u16 pipenum = pipe->info.pipenum;
322         const unsigned long fifoaddr[] = {D0FIFO, D1FIFO, CFIFO};
323         const unsigned long fifosel[] = {D0FIFOSEL, D1FIFOSEL, CFIFOSEL};
324         const unsigned long fifoctr[] = {D0FIFOCTR, D1FIFOCTR, CFIFOCTR};
325
326         if (dma_ch > R8A66597_PIPE_NO_DMA)      /* dma fifo not use? */
327                 dma_ch = R8A66597_PIPE_NO_DMA;
328
329         pipe->fifoaddr = fifoaddr[dma_ch];
330         pipe->fifosel = fifosel[dma_ch];
331         pipe->fifoctr = fifoctr[dma_ch];
332
333         if (pipenum == 0)
334                 pipe->pipectr = DCPCTR;
335         else
336                 pipe->pipectr = get_pipectr_addr(pipenum);
337
338         if (check_bulk_or_isoc(pipenum)) {
339                 pipe->pipetre = get_pipetre_addr(pipenum);
340                 pipe->pipetrn = get_pipetrn_addr(pipenum);
341         } else {
342                 pipe->pipetre = 0;
343                 pipe->pipetrn = 0;
344         }
345 }
346
347 static struct r8a66597_device *
348 get_urb_to_r8a66597_dev(struct r8a66597 *r8a66597, struct urb *urb)
349 {
350         if (usb_pipedevice(urb->pipe) == 0)
351                 return &r8a66597->device0;
352
353         return dev_get_drvdata(&urb->dev->dev);
354 }
355
356 static int make_r8a66597_device(struct r8a66597 *r8a66597,
357                                 struct urb *urb, u8 addr)
358 {
359         struct r8a66597_device *dev;
360         int usb_address = urb->setup_packet[2]; /* urb->pipe is address 0 */
361
362         dev = kzalloc(sizeof(struct r8a66597_device), GFP_ATOMIC);
363         if (dev == NULL)
364                 return -ENOMEM;
365
366         dev_set_drvdata(&urb->dev->dev, dev);
367         dev->udev = urb->dev;
368         dev->address = addr;
369         dev->usb_address = usb_address;
370         dev->state = USB_STATE_ADDRESS;
371         dev->ep_in_toggle = 0;
372         dev->ep_out_toggle = 0;
373         INIT_LIST_HEAD(&dev->device_list);
374         list_add_tail(&dev->device_list, &r8a66597->child_device);
375
376         get_port_number(urb->dev->devpath, &dev->root_port, &dev->hub_port);
377         if (!is_child_device(urb->dev->devpath))
378                 r8a66597->root_hub[dev->root_port].dev = dev;
379
380         set_devadd_reg(r8a66597, dev->address,
381                        get_r8a66597_usb_speed(urb->dev->speed),
382                        get_parent_r8a66597_address(r8a66597, urb->dev),
383                        dev->hub_port, dev->root_port);
384
385         return 0;
386 }
387
388 /* this function must be called with interrupt disabled */
389 static u8 alloc_usb_address(struct r8a66597 *r8a66597, struct urb *urb)
390 {
391         u8 addr;        /* R8A66597's address */
392         struct r8a66597_device *dev;
393
394         if (is_hub_limit(urb->dev->devpath)) {
395                 dev_err(&urb->dev->dev, "External hub limit reached.\n");
396                 return 0;
397         }
398
399         dev = get_urb_to_r8a66597_dev(r8a66597, urb);
400         if (dev && dev->state >= USB_STATE_ADDRESS)
401                 return dev->address;
402
403         for (addr = 1; addr <= R8A66597_MAX_DEVICE; addr++) {
404                 if (r8a66597->address_map & (1 << addr))
405                         continue;
406
407                 dbg("alloc_address: r8a66597_addr=%d", addr);
408                 r8a66597->address_map |= 1 << addr;
409
410                 if (make_r8a66597_device(r8a66597, urb, addr) < 0)
411                         return 0;
412
413                 return addr;
414         }
415
416         dev_err(&urb->dev->dev,
417                 "cannot communicate with a USB device more than 10.(%x)\n",
418                 r8a66597->address_map);
419
420         return 0;
421 }
422
423 /* this function must be called with interrupt disabled */
424 static void free_usb_address(struct r8a66597 *r8a66597,
425                              struct r8a66597_device *dev)
426 {
427         int port;
428
429         if (!dev)
430                 return;
431
432         dbg("free_addr: addr=%d", dev->address);
433
434         dev->state = USB_STATE_DEFAULT;
435         r8a66597->address_map &= ~(1 << dev->address);
436         dev->address = 0;
437         dev_set_drvdata(&dev->udev->dev, NULL);
438         list_del(&dev->device_list);
439         kfree(dev);
440
441         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++) {
442                 if (r8a66597->root_hub[port].dev == dev) {
443                         r8a66597->root_hub[port].dev = NULL;
444                         break;
445                 }
446         }
447 }
448
449 static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg,
450                               u16 mask, u16 loop)
451 {
452         u16 tmp;
453         int i = 0;
454
455         do {
456                 tmp = r8a66597_read(r8a66597, reg);
457                 if (i++ > 1000000) {
458                         printk(KERN_ERR "r8a66597: register%lx, loop %x "
459                                "is timeout\n", reg, loop);
460                         break;
461                 }
462                 ndelay(1);
463         } while ((tmp & mask) != loop);
464 }
465
466 /* this function must be called with interrupt disabled */
467 static void pipe_start(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
468 {
469         u16 tmp;
470
471         tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
472         if ((pipe->info.pipenum != 0) & ((tmp & PID_STALL) != 0)) /* stall? */
473                 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
474         r8a66597_mdfy(r8a66597, PID_BUF, PID, pipe->pipectr);
475 }
476
477 /* this function must be called with interrupt disabled */
478 static void pipe_stop(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
479 {
480         u16 tmp;
481
482         tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
483         if ((tmp & PID_STALL11) != PID_STALL11) /* force stall? */
484                 r8a66597_mdfy(r8a66597, PID_STALL, PID, pipe->pipectr);
485         r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
486         r8a66597_reg_wait(r8a66597, pipe->pipectr, PBUSY, 0);
487 }
488
489 /* this function must be called with interrupt disabled */
490 static void clear_all_buffer(struct r8a66597 *r8a66597,
491                              struct r8a66597_pipe *pipe)
492 {
493         u16 tmp;
494
495         if (!pipe || pipe->info.pipenum == 0)
496                 return;
497
498         pipe_stop(r8a66597, pipe);
499         r8a66597_bset(r8a66597, ACLRM, pipe->pipectr);
500         tmp = r8a66597_read(r8a66597, pipe->pipectr);
501         tmp = r8a66597_read(r8a66597, pipe->pipectr);
502         tmp = r8a66597_read(r8a66597, pipe->pipectr);
503         r8a66597_bclr(r8a66597, ACLRM, pipe->pipectr);
504 }
505
506 /* this function must be called with interrupt disabled */
507 static void r8a66597_pipe_toggle(struct r8a66597 *r8a66597,
508                                  struct r8a66597_pipe *pipe, int toggle)
509 {
510         if (toggle)
511                 r8a66597_bset(r8a66597, SQSET, pipe->pipectr);
512         else
513                 r8a66597_bset(r8a66597, SQCLR, pipe->pipectr);
514 }
515
516 /* this function must be called with interrupt disabled */
517 static inline void cfifo_change(struct r8a66597 *r8a66597, u16 pipenum)
518 {
519         r8a66597_mdfy(r8a66597, MBW | pipenum, MBW | CURPIPE, CFIFOSEL);
520         r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, pipenum);
521 }
522
523 /* this function must be called with interrupt disabled */
524 static inline void fifo_change_from_pipe(struct r8a66597 *r8a66597,
525                                          struct r8a66597_pipe *pipe)
526 {
527         cfifo_change(r8a66597, 0);
528         r8a66597_mdfy(r8a66597, MBW | 0, MBW | CURPIPE, D0FIFOSEL);
529         r8a66597_mdfy(r8a66597, MBW | 0, MBW | CURPIPE, D1FIFOSEL);
530
531         r8a66597_mdfy(r8a66597, MBW | pipe->info.pipenum, MBW | CURPIPE,
532                       pipe->fifosel);
533         r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, pipe->info.pipenum);
534 }
535
536 static u16 r8a66597_get_pipenum(struct urb *urb, struct usb_host_endpoint *hep)
537 {
538         struct r8a66597_pipe *pipe = hep->hcpriv;
539
540         if (usb_pipeendpoint(urb->pipe) == 0)
541                 return 0;
542         else
543                 return pipe->info.pipenum;
544 }
545
546 static u16 get_urb_to_r8a66597_addr(struct r8a66597 *r8a66597, struct urb *urb)
547 {
548         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
549
550         return (usb_pipedevice(urb->pipe) == 0) ? 0 : dev->address;
551 }
552
553 static unsigned short *get_toggle_pointer(struct r8a66597_device *dev,
554                                           int urb_pipe)
555 {
556         if (!dev)
557                 return NULL;
558
559         return usb_pipein(urb_pipe) ? &dev->ep_in_toggle : &dev->ep_out_toggle;
560 }
561
562 /* this function must be called with interrupt disabled */
563 static void pipe_toggle_set(struct r8a66597 *r8a66597,
564                             struct r8a66597_pipe *pipe,
565                             struct urb *urb, int set)
566 {
567         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
568         unsigned char endpoint = usb_pipeendpoint(urb->pipe);
569         unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
570
571         if (!toggle)
572                 return;
573
574         if (set)
575                 *toggle |= 1 << endpoint;
576         else
577                 *toggle &= ~(1 << endpoint);
578 }
579
580 /* this function must be called with interrupt disabled */
581 static void pipe_toggle_save(struct r8a66597 *r8a66597,
582                              struct r8a66597_pipe *pipe,
583                              struct urb *urb)
584 {
585         if (r8a66597_read(r8a66597, pipe->pipectr) & SQMON)
586                 pipe_toggle_set(r8a66597, pipe, urb, 1);
587         else
588                 pipe_toggle_set(r8a66597, pipe, urb, 0);
589 }
590
591 /* this function must be called with interrupt disabled */
592 static void pipe_toggle_restore(struct r8a66597 *r8a66597,
593                                 struct r8a66597_pipe *pipe,
594                                 struct urb *urb)
595 {
596         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
597         unsigned char endpoint = usb_pipeendpoint(urb->pipe);
598         unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
599
600         if (!toggle)
601                 return;
602
603         r8a66597_pipe_toggle(r8a66597, pipe, *toggle & (1 << endpoint));
604 }
605
606 /* this function must be called with interrupt disabled */
607 static void pipe_buffer_setting(struct r8a66597 *r8a66597,
608                                 struct r8a66597_pipe_info *info)
609 {
610         u16 val = 0;
611
612         if (info->pipenum == 0)
613                 return;
614
615         r8a66597_bset(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
616         r8a66597_bclr(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
617         r8a66597_write(r8a66597, info->pipenum, PIPESEL);
618         if (!info->dir_in)
619                 val |= R8A66597_DIR;
620         if (info->type == R8A66597_BULK && info->dir_in)
621                 val |= R8A66597_DBLB | R8A66597_SHTNAK;
622         val |= info->type | info->epnum;
623         r8a66597_write(r8a66597, val, PIPECFG);
624
625         r8a66597_write(r8a66597, (info->buf_bsize << 10) | (info->bufnum),
626                        PIPEBUF);
627         r8a66597_write(r8a66597, make_devsel(info->address) | info->maxpacket,
628                        PIPEMAXP);
629         r8a66597_write(r8a66597, info->interval, PIPEPERI);
630 }
631
632 /* this function must be called with interrupt disabled */
633 static void pipe_setting(struct r8a66597 *r8a66597, struct r8a66597_td *td)
634 {
635         struct r8a66597_pipe_info *info;
636         struct urb *urb = td->urb;
637
638         if (td->pipenum > 0) {
639                 info = &td->pipe->info;
640                 cfifo_change(r8a66597, 0);
641                 pipe_buffer_setting(r8a66597, info);
642
643                 if (!usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe),
644                                    usb_pipeout(urb->pipe)) &&
645                     !usb_pipecontrol(urb->pipe)) {
646                         r8a66597_pipe_toggle(r8a66597, td->pipe, 0);
647                         pipe_toggle_set(r8a66597, td->pipe, urb, 0);
648                         clear_all_buffer(r8a66597, td->pipe);
649                         usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
650                                       usb_pipeout(urb->pipe), 1);
651                 }
652                 pipe_toggle_restore(r8a66597, td->pipe, urb);
653         }
654 }
655
656 /* this function must be called with interrupt disabled */
657 static u16 get_empty_pipenum(struct r8a66597 *r8a66597,
658                              struct usb_endpoint_descriptor *ep)
659 {
660         u16 array[R8A66597_MAX_NUM_PIPE], i = 0, min;
661
662         memset(array, 0, sizeof(array));
663         switch (usb_endpoint_type(ep)) {
664         case USB_ENDPOINT_XFER_BULK:
665                 if (usb_endpoint_dir_in(ep))
666                         array[i++] = 4;
667                 else {
668                         array[i++] = 3;
669                         array[i++] = 5;
670                 }
671                 break;
672         case USB_ENDPOINT_XFER_INT:
673                 if (usb_endpoint_dir_in(ep)) {
674                         array[i++] = 6;
675                         array[i++] = 7;
676                         array[i++] = 8;
677                 } else
678                         array[i++] = 9;
679                 break;
680         case USB_ENDPOINT_XFER_ISOC:
681                 if (usb_endpoint_dir_in(ep))
682                         array[i++] = 2;
683                 else
684                         array[i++] = 1;
685                 break;
686         default:
687                 printk(KERN_ERR "r8a66597: Illegal type\n");
688                 return 0;
689         }
690
691         i = 1;
692         min = array[0];
693         while (array[i] != 0) {
694                 if (r8a66597->pipe_cnt[min] > r8a66597->pipe_cnt[array[i]])
695                         min = array[i];
696                 i++;
697         }
698
699         return min;
700 }
701
702 static u16 get_r8a66597_type(__u8 type)
703 {
704         u16 r8a66597_type;
705
706         switch (type) {
707         case USB_ENDPOINT_XFER_BULK:
708                 r8a66597_type = R8A66597_BULK;
709                 break;
710         case USB_ENDPOINT_XFER_INT:
711                 r8a66597_type = R8A66597_INT;
712                 break;
713         case USB_ENDPOINT_XFER_ISOC:
714                 r8a66597_type = R8A66597_ISO;
715                 break;
716         default:
717                 printk(KERN_ERR "r8a66597: Illegal type\n");
718                 r8a66597_type = 0x0000;
719                 break;
720         }
721
722         return r8a66597_type;
723 }
724
725 static u16 get_bufnum(u16 pipenum)
726 {
727         u16 bufnum = 0;
728
729         if (pipenum == 0)
730                 bufnum = 0;
731         else if (check_bulk_or_isoc(pipenum))
732                 bufnum = 8 + (pipenum - 1) * R8A66597_BUF_BSIZE*2;
733         else if (check_interrupt(pipenum))
734                 bufnum = 4 + (pipenum - 6);
735         else
736                 printk(KERN_ERR "r8a66597: Illegal pipenum (%d)\n", pipenum);
737
738         return bufnum;
739 }
740
741 static u16 get_buf_bsize(u16 pipenum)
742 {
743         u16 buf_bsize = 0;
744
745         if (pipenum == 0)
746                 buf_bsize = 3;
747         else if (check_bulk_or_isoc(pipenum))
748                 buf_bsize = R8A66597_BUF_BSIZE - 1;
749         else if (check_interrupt(pipenum))
750                 buf_bsize = 0;
751         else
752                 printk(KERN_ERR "r8a66597: Illegal pipenum (%d)\n", pipenum);
753
754         return buf_bsize;
755 }
756
757 /* this function must be called with interrupt disabled */
758 static void enable_r8a66597_pipe_dma(struct r8a66597 *r8a66597,
759                                      struct r8a66597_device *dev,
760                                      struct r8a66597_pipe *pipe,
761                                      struct urb *urb)
762 {
763 #if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
764         int i;
765         struct r8a66597_pipe_info *info = &pipe->info;
766
767         if ((pipe->info.pipenum != 0) && (info->type != R8A66597_INT)) {
768                 for (i = 0; i < R8A66597_MAX_DMA_CHANNEL; i++) {
769                         if ((r8a66597->dma_map & (1 << i)) != 0)
770                                 continue;
771
772                         dev_info(&dev->udev->dev,
773                                  "address %d, EndpointAddress 0x%02x use "
774                                  "DMA FIFO\n", usb_pipedevice(urb->pipe),
775                                  info->dir_in ?
776                                         USB_ENDPOINT_DIR_MASK + info->epnum
777                                         : info->epnum);
778
779                         r8a66597->dma_map |= 1 << i;
780                         dev->dma_map |= 1 << i;
781                         set_pipe_reg_addr(pipe, i);
782
783                         cfifo_change(r8a66597, 0);
784                         r8a66597_mdfy(r8a66597, MBW | pipe->info.pipenum,
785                                       MBW | CURPIPE, pipe->fifosel);
786
787                         r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE,
788                                           pipe->info.pipenum);
789                         r8a66597_bset(r8a66597, BCLR, pipe->fifoctr);
790                         break;
791                 }
792         }
793 #endif  /* #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) */
794 }
795
796 /* this function must be called with interrupt disabled */
797 static void enable_r8a66597_pipe(struct r8a66597 *r8a66597, struct urb *urb,
798                                  struct usb_host_endpoint *hep,
799                                  struct r8a66597_pipe_info *info)
800 {
801         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
802         struct r8a66597_pipe *pipe = hep->hcpriv;
803
804         dbg("enable_pipe:");
805
806         pipe->info = *info;
807         set_pipe_reg_addr(pipe, R8A66597_PIPE_NO_DMA);
808         r8a66597->pipe_cnt[pipe->info.pipenum]++;
809         dev->pipe_cnt[pipe->info.pipenum]++;
810
811         enable_r8a66597_pipe_dma(r8a66597, dev, pipe, urb);
812 }
813
814 /* this function must be called with interrupt disabled */
815 static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address)
816 {
817         struct r8a66597_td *td, *next;
818         struct urb *urb;
819         struct list_head *list = &r8a66597->pipe_queue[pipenum];
820
821         if (list_empty(list))
822                 return;
823
824         list_for_each_entry_safe(td, next, list, queue) {
825                 if (!td)
826                         continue;
827                 if (td->address != address)
828                         continue;
829
830                 urb = td->urb;
831                 list_del(&td->queue);
832                 kfree(td);
833
834                 if (urb) {
835                         usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597),
836                                         urb);
837
838                         spin_unlock(&r8a66597->lock);
839                         usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb,
840                                         -ENODEV);
841                         spin_lock(&r8a66597->lock);
842                 }
843                 break;
844         }
845 }
846
847 /* this function must be called with interrupt disabled */
848 static void disable_r8a66597_pipe_all(struct r8a66597 *r8a66597,
849                                       struct r8a66597_device *dev)
850 {
851         int check_ep0 = 0;
852         u16 pipenum;
853
854         if (!dev)
855                 return;
856
857         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
858                 if (!dev->pipe_cnt[pipenum])
859                         continue;
860
861                 if (!check_ep0) {
862                         check_ep0 = 1;
863                         force_dequeue(r8a66597, 0, dev->address);
864                 }
865
866                 r8a66597->pipe_cnt[pipenum] -= dev->pipe_cnt[pipenum];
867                 dev->pipe_cnt[pipenum] = 0;
868                 force_dequeue(r8a66597, pipenum, dev->address);
869         }
870
871         dbg("disable_pipe");
872
873         r8a66597->dma_map &= ~(dev->dma_map);
874         dev->dma_map = 0;
875 }
876
877 static u16 get_interval(struct urb *urb, __u8 interval)
878 {
879         u16 time = 1;
880         int i;
881
882         if (urb->dev->speed == USB_SPEED_HIGH) {
883                 if (interval > IITV)
884                         time = IITV;
885                 else
886                         time = interval ? interval - 1 : 0;
887         } else {
888                 if (interval > 128) {
889                         time = IITV;
890                 } else {
891                         /* calculate the nearest value for PIPEPERI */
892                         for (i = 0; i < 7; i++) {
893                                 if ((1 << i) < interval &&
894                                     (1 << (i + 1) > interval))
895                                         time = 1 << i;
896                         }
897                 }
898         }
899
900         return time;
901 }
902
903 static unsigned long get_timer_interval(struct urb *urb, __u8 interval)
904 {
905         __u8 i;
906         unsigned long time = 1;
907
908         if (usb_pipeisoc(urb->pipe))
909                 return 0;
910
911         if (get_r8a66597_usb_speed(urb->dev->speed) == HSMODE) {
912                 for (i = 0; i < (interval - 1); i++)
913                         time *= 2;
914                 time = time * 125 / 1000;       /* uSOF -> msec */
915         } else {
916                 time = interval;
917         }
918
919         return time;
920 }
921
922 /* this function must be called with interrupt disabled */
923 static void init_pipe_info(struct r8a66597 *r8a66597, struct urb *urb,
924                            struct usb_host_endpoint *hep,
925                            struct usb_endpoint_descriptor *ep)
926 {
927         struct r8a66597_pipe_info info;
928
929         info.pipenum = get_empty_pipenum(r8a66597, ep);
930         info.address = get_urb_to_r8a66597_addr(r8a66597, urb);
931         info.epnum = usb_endpoint_num(ep);
932         info.maxpacket = le16_to_cpu(ep->wMaxPacketSize);
933         info.type = get_r8a66597_type(usb_endpoint_type(ep));
934         info.bufnum = get_bufnum(info.pipenum);
935         info.buf_bsize = get_buf_bsize(info.pipenum);
936         if (info.type == R8A66597_BULK) {
937                 info.interval = 0;
938                 info.timer_interval = 0;
939         } else {
940                 info.interval = get_interval(urb, ep->bInterval);
941                 info.timer_interval = get_timer_interval(urb, ep->bInterval);
942         }
943         if (usb_endpoint_dir_in(ep))
944                 info.dir_in = 1;
945         else
946                 info.dir_in = 0;
947
948         enable_r8a66597_pipe(r8a66597, urb, hep, &info);
949 }
950
951 static void init_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
952 {
953         struct r8a66597_device *dev;
954
955         dev = get_urb_to_r8a66597_dev(r8a66597, urb);
956         dev->state = USB_STATE_CONFIGURED;
957 }
958
959 static void pipe_irq_enable(struct r8a66597 *r8a66597, struct urb *urb,
960                             u16 pipenum)
961 {
962         if (pipenum == 0 && usb_pipeout(urb->pipe))
963                 enable_irq_empty(r8a66597, pipenum);
964         else
965                 enable_irq_ready(r8a66597, pipenum);
966
967         if (!usb_pipeisoc(urb->pipe))
968                 enable_irq_nrdy(r8a66597, pipenum);
969 }
970
971 static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum)
972 {
973         disable_irq_ready(r8a66597, pipenum);
974         disable_irq_nrdy(r8a66597, pipenum);
975 }
976
977 static void r8a66597_root_hub_start_polling(struct r8a66597 *r8a66597)
978 {
979         mod_timer(&r8a66597->rh_timer,
980                         jiffies + msecs_to_jiffies(R8A66597_RH_POLL_TIME));
981 }
982
983 static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port,
984                                         int connect)
985 {
986         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
987
988         rh->old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
989         rh->scount = R8A66597_MAX_SAMPLING;
990         if (connect)
991                 rh->port |= 1 << USB_PORT_FEAT_CONNECTION;
992         else
993                 rh->port &= ~(1 << USB_PORT_FEAT_CONNECTION);
994         rh->port |= 1 << USB_PORT_FEAT_C_CONNECTION;
995
996         r8a66597_root_hub_start_polling(r8a66597);
997 }
998
999 /* this function must be called with interrupt disabled */
1000 static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port,
1001                                         u16 syssts)
1002 {
1003         if (syssts == SE0) {
1004                 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port));
1005                 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
1006                 return;
1007         }
1008
1009         if (syssts == FS_JSTS)
1010                 r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port));
1011         else if (syssts == LS_JSTS)
1012                 r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port));
1013
1014         r8a66597_write(r8a66597, ~DTCH, get_intsts_reg(port));
1015         r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port));
1016
1017         if (r8a66597->bus_suspended)
1018                 usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597));
1019 }
1020
1021 /* this function must be called with interrupt disabled */
1022 static void r8a66597_usb_connect(struct r8a66597 *r8a66597, int port)
1023 {
1024         u16 speed = get_rh_usb_speed(r8a66597, port);
1025         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1026
1027         if (speed == HSMODE)
1028                 rh->port |= (1 << USB_PORT_FEAT_HIGHSPEED);
1029         else if (speed == LSMODE)
1030                 rh->port |= (1 << USB_PORT_FEAT_LOWSPEED);
1031
1032         rh->port &= ~(1 << USB_PORT_FEAT_RESET);
1033         rh->port |= 1 << USB_PORT_FEAT_ENABLE;
1034 }
1035
1036 /* this function must be called with interrupt disabled */
1037 static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597, int port)
1038 {
1039         struct r8a66597_device *dev = r8a66597->root_hub[port].dev;
1040
1041         disable_r8a66597_pipe_all(r8a66597, dev);
1042         free_usb_address(r8a66597, dev);
1043
1044         start_root_hub_sampling(r8a66597, port, 0);
1045 }
1046
1047 /* this function must be called with interrupt disabled */
1048 static void prepare_setup_packet(struct r8a66597 *r8a66597,
1049                                  struct r8a66597_td *td)
1050 {
1051         int i;
1052         __le16 *p = (__le16 *)td->urb->setup_packet;
1053         unsigned long setup_addr = USBREQ;
1054
1055         r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket,
1056                        DCPMAXP);
1057         r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1);
1058
1059         for (i = 0; i < 4; i++) {
1060                 r8a66597_write(r8a66597, le16_to_cpu(p[i]), setup_addr);
1061                 setup_addr += 2;
1062         }
1063         r8a66597_write(r8a66597, SUREQ, DCPCTR);
1064 }
1065
1066 /* this function must be called with interrupt disabled */
1067 static void prepare_packet_read(struct r8a66597 *r8a66597,
1068                                 struct r8a66597_td *td)
1069 {
1070         struct urb *urb = td->urb;
1071
1072         if (usb_pipecontrol(urb->pipe)) {
1073                 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
1074                 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
1075                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1076                 if (urb->actual_length == 0) {
1077                         r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1078                         r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1079                 }
1080                 pipe_irq_disable(r8a66597, td->pipenum);
1081                 pipe_start(r8a66597, td->pipe);
1082                 pipe_irq_enable(r8a66597, urb, td->pipenum);
1083         } else {
1084                 if (urb->actual_length == 0) {
1085                         pipe_irq_disable(r8a66597, td->pipenum);
1086                         pipe_setting(r8a66597, td);
1087                         pipe_stop(r8a66597, td->pipe);
1088                         r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
1089
1090                         if (td->pipe->pipetre) {
1091                                 r8a66597_write(r8a66597, TRCLR,
1092                                                 td->pipe->pipetre);
1093                                 r8a66597_write(r8a66597,
1094                                                 DIV_ROUND_UP
1095                                                   (urb->transfer_buffer_length,
1096                                                    td->maxpacket),
1097                                                 td->pipe->pipetrn);
1098                                 r8a66597_bset(r8a66597, TRENB,
1099                                                 td->pipe->pipetre);
1100                         }
1101
1102                         pipe_start(r8a66597, td->pipe);
1103                         pipe_irq_enable(r8a66597, urb, td->pipenum);
1104                 }
1105         }
1106 }
1107
1108 /* this function must be called with interrupt disabled */
1109 static void prepare_packet_write(struct r8a66597 *r8a66597,
1110                                  struct r8a66597_td *td)
1111 {
1112         u16 tmp;
1113         struct urb *urb = td->urb;
1114
1115         if (usb_pipecontrol(urb->pipe)) {
1116                 pipe_stop(r8a66597, td->pipe);
1117                 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
1118                 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
1119                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1120                 if (urb->actual_length == 0) {
1121                         r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1122                         r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1123                 }
1124         } else {
1125                 if (urb->actual_length == 0)
1126                         pipe_setting(r8a66597, td);
1127                 if (td->pipe->pipetre)
1128                         r8a66597_bclr(r8a66597, TRENB, td->pipe->pipetre);
1129         }
1130         r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
1131
1132         fifo_change_from_pipe(r8a66597, td->pipe);
1133         tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1134         if (unlikely((tmp & FRDY) == 0))
1135                 pipe_irq_enable(r8a66597, urb, td->pipenum);
1136         else
1137                 packet_write(r8a66597, td->pipenum);
1138         pipe_start(r8a66597, td->pipe);
1139 }
1140
1141 /* this function must be called with interrupt disabled */
1142 static void prepare_status_packet(struct r8a66597 *r8a66597,
1143                                   struct r8a66597_td *td)
1144 {
1145         struct urb *urb = td->urb;
1146
1147         r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1148         pipe_stop(r8a66597, td->pipe);
1149
1150         if (urb->setup_packet[0] & USB_ENDPOINT_DIR_MASK) {
1151                 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
1152                 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
1153                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1154                 r8a66597_write(r8a66597, ~BEMP0, BEMPSTS);
1155                 r8a66597_write(r8a66597, BCLR | BVAL, CFIFOCTR);
1156                 enable_irq_empty(r8a66597, 0);
1157         } else {
1158                 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
1159                 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
1160                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1161                 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1162                 enable_irq_ready(r8a66597, 0);
1163         }
1164         enable_irq_nrdy(r8a66597, 0);
1165         pipe_start(r8a66597, td->pipe);
1166 }
1167
1168 static int is_set_address(unsigned char *setup_packet)
1169 {
1170         if (((setup_packet[0] & USB_TYPE_MASK) == USB_TYPE_STANDARD) &&
1171                         setup_packet[1] == USB_REQ_SET_ADDRESS)
1172                 return 1;
1173         else
1174                 return 0;
1175 }
1176
1177 /* this function must be called with interrupt disabled */
1178 static int start_transfer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1179 {
1180         BUG_ON(!td);
1181
1182         switch (td->type) {
1183         case USB_PID_SETUP:
1184                 if (is_set_address(td->urb->setup_packet)) {
1185                         td->set_address = 1;
1186                         td->urb->setup_packet[2] = alloc_usb_address(r8a66597,
1187                                                                      td->urb);
1188                         if (td->urb->setup_packet[2] == 0)
1189                                 return -EPIPE;
1190                 }
1191                 prepare_setup_packet(r8a66597, td);
1192                 break;
1193         case USB_PID_IN:
1194                 prepare_packet_read(r8a66597, td);
1195                 break;
1196         case USB_PID_OUT:
1197                 prepare_packet_write(r8a66597, td);
1198                 break;
1199         case USB_PID_ACK:
1200                 prepare_status_packet(r8a66597, td);
1201                 break;
1202         default:
1203                 printk(KERN_ERR "r8a66597: invalid type.\n");
1204                 break;
1205         }
1206
1207         return 0;
1208 }
1209
1210 static int check_transfer_finish(struct r8a66597_td *td, struct urb *urb)
1211 {
1212         if (usb_pipeisoc(urb->pipe)) {
1213                 if (urb->number_of_packets == td->iso_cnt)
1214                         return 1;
1215         }
1216
1217         /* control or bulk or interrupt */
1218         if ((urb->transfer_buffer_length <= urb->actual_length) ||
1219             (td->short_packet) || (td->zero_packet))
1220                 return 1;
1221
1222         return 0;
1223 }
1224
1225 /* this function must be called with interrupt disabled */
1226 static void set_td_timer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1227 {
1228         unsigned long time;
1229
1230         BUG_ON(!td);
1231
1232         if (!list_empty(&r8a66597->pipe_queue[td->pipenum]) &&
1233             !usb_pipecontrol(td->urb->pipe) && usb_pipein(td->urb->pipe)) {
1234                 r8a66597->timeout_map |= 1 << td->pipenum;
1235                 switch (usb_pipetype(td->urb->pipe)) {
1236                 case PIPE_INTERRUPT:
1237                 case PIPE_ISOCHRONOUS:
1238                         time = 30;
1239                         break;
1240                 default:
1241                         time = 300;
1242                         break;
1243                 }
1244
1245                 mod_timer(&r8a66597->td_timer[td->pipenum],
1246                           jiffies + msecs_to_jiffies(time));
1247         }
1248 }
1249
1250 /* this function must be called with interrupt disabled */
1251 static void finish_request(struct r8a66597 *r8a66597, struct r8a66597_td *td,
1252                 u16 pipenum, struct urb *urb, int status)
1253 __releases(r8a66597->lock) __acquires(r8a66597->lock)
1254 {
1255         int restart = 0;
1256         struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
1257
1258         r8a66597->timeout_map &= ~(1 << pipenum);
1259
1260         if (likely(td)) {
1261                 if (td->set_address && (status != 0 || urb->unlinked))
1262                         r8a66597->address_map &= ~(1 << urb->setup_packet[2]);
1263
1264                 pipe_toggle_save(r8a66597, td->pipe, urb);
1265                 list_del(&td->queue);
1266                 kfree(td);
1267         }
1268
1269         if (!list_empty(&r8a66597->pipe_queue[pipenum]))
1270                 restart = 1;
1271
1272         if (likely(urb)) {
1273                 if (usb_pipeisoc(urb->pipe))
1274                         urb->start_frame = r8a66597_get_frame(hcd);
1275
1276                 usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb);
1277                 spin_unlock(&r8a66597->lock);
1278                 usb_hcd_giveback_urb(hcd, urb, status);
1279                 spin_lock(&r8a66597->lock);
1280         }
1281
1282         if (restart) {
1283                 td = r8a66597_get_td(r8a66597, pipenum);
1284                 if (unlikely(!td))
1285                         return;
1286
1287                 start_transfer(r8a66597, td);
1288                 set_td_timer(r8a66597, td);
1289         }
1290 }
1291
1292 static void packet_read(struct r8a66597 *r8a66597, u16 pipenum)
1293 {
1294         u16 tmp;
1295         int rcv_len, bufsize, urb_len, size;
1296         u16 *buf;
1297         struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1298         struct urb *urb;
1299         int finish = 0;
1300         int status = 0;
1301
1302         if (unlikely(!td))
1303                 return;
1304         urb = td->urb;
1305
1306         fifo_change_from_pipe(r8a66597, td->pipe);
1307         tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1308         if (unlikely((tmp & FRDY) == 0)) {
1309                 pipe_stop(r8a66597, td->pipe);
1310                 pipe_irq_disable(r8a66597, pipenum);
1311                 printk(KERN_ERR "r8a66597: in fifo not ready (%d)\n", pipenum);
1312                 finish_request(r8a66597, td, pipenum, td->urb, -EPIPE);
1313                 return;
1314         }
1315
1316         /* prepare parameters */
1317         rcv_len = tmp & DTLN;
1318         if (usb_pipeisoc(urb->pipe)) {
1319                 buf = (u16 *)(urb->transfer_buffer +
1320                                 urb->iso_frame_desc[td->iso_cnt].offset);
1321                 urb_len = urb->iso_frame_desc[td->iso_cnt].length;
1322         } else {
1323                 buf = (void *)urb->transfer_buffer + urb->actual_length;
1324                 urb_len = urb->transfer_buffer_length - urb->actual_length;
1325         }
1326         bufsize = min(urb_len, (int) td->maxpacket);
1327         if (rcv_len <= bufsize) {
1328                 size = rcv_len;
1329         } else {
1330                 size = bufsize;
1331                 status = -EOVERFLOW;
1332                 finish = 1;
1333         }
1334
1335         /* update parameters */
1336         urb->actual_length += size;
1337         if (rcv_len == 0)
1338                 td->zero_packet = 1;
1339         if (rcv_len < bufsize) {
1340                 td->short_packet = 1;
1341         }
1342         if (usb_pipeisoc(urb->pipe)) {
1343                 urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1344                 urb->iso_frame_desc[td->iso_cnt].status = status;
1345                 td->iso_cnt++;
1346                 finish = 0;
1347         }
1348
1349         /* check transfer finish */
1350         if (finish || check_transfer_finish(td, urb)) {
1351                 pipe_stop(r8a66597, td->pipe);
1352                 pipe_irq_disable(r8a66597, pipenum);
1353                 finish = 1;
1354         }
1355
1356         /* read fifo */
1357         if (urb->transfer_buffer) {
1358                 if (size == 0)
1359                         r8a66597_write(r8a66597, BCLR, td->pipe->fifoctr);
1360                 else
1361                         r8a66597_read_fifo(r8a66597, td->pipe->fifoaddr,
1362                                            buf, size);
1363         }
1364
1365         if (finish && pipenum != 0)
1366                 finish_request(r8a66597, td, pipenum, urb, status);
1367 }
1368
1369 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum)
1370 {
1371         u16 tmp;
1372         int bufsize, size;
1373         u16 *buf;
1374         struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1375         struct urb *urb;
1376
1377         if (unlikely(!td))
1378                 return;
1379         urb = td->urb;
1380
1381         fifo_change_from_pipe(r8a66597, td->pipe);
1382         tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1383         if (unlikely((tmp & FRDY) == 0)) {
1384                 pipe_stop(r8a66597, td->pipe);
1385                 pipe_irq_disable(r8a66597, pipenum);
1386                 printk(KERN_ERR "r8a66597: out fifo not ready (%d)\n", pipenum);
1387                 finish_request(r8a66597, td, pipenum, urb, -EPIPE);
1388                 return;
1389         }
1390
1391         /* prepare parameters */
1392         bufsize = td->maxpacket;
1393         if (usb_pipeisoc(urb->pipe)) {
1394                 buf = (u16 *)(urb->transfer_buffer +
1395                                 urb->iso_frame_desc[td->iso_cnt].offset);
1396                 size = min(bufsize,
1397                            (int)urb->iso_frame_desc[td->iso_cnt].length);
1398         } else {
1399                 buf = (u16 *)(urb->transfer_buffer + urb->actual_length);
1400                 size = min_t(u32, bufsize,
1401                            urb->transfer_buffer_length - urb->actual_length);
1402         }
1403
1404         /* write fifo */
1405         if (pipenum > 0)
1406                 r8a66597_write(r8a66597, ~(1 << pipenum), BEMPSTS);
1407         if (urb->transfer_buffer) {
1408                 r8a66597_write_fifo(r8a66597, td->pipe->fifoaddr, buf, size);
1409                 if (!usb_pipebulk(urb->pipe) || td->maxpacket != size)
1410                         r8a66597_write(r8a66597, BVAL, td->pipe->fifoctr);
1411         }
1412
1413         /* update parameters */
1414         urb->actual_length += size;
1415         if (usb_pipeisoc(urb->pipe)) {
1416                 urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1417                 urb->iso_frame_desc[td->iso_cnt].status = 0;
1418                 td->iso_cnt++;
1419         }
1420
1421         /* check transfer finish */
1422         if (check_transfer_finish(td, urb)) {
1423                 disable_irq_ready(r8a66597, pipenum);
1424                 enable_irq_empty(r8a66597, pipenum);
1425                 if (!usb_pipeisoc(urb->pipe))
1426                         enable_irq_nrdy(r8a66597, pipenum);
1427         } else
1428                 pipe_irq_enable(r8a66597, urb, pipenum);
1429 }
1430
1431
1432 static void check_next_phase(struct r8a66597 *r8a66597, int status)
1433 {
1434         struct r8a66597_td *td = r8a66597_get_td(r8a66597, 0);
1435         struct urb *urb;
1436         u8 finish = 0;
1437
1438         if (unlikely(!td))
1439                 return;
1440         urb = td->urb;
1441
1442         switch (td->type) {
1443         case USB_PID_IN:
1444         case USB_PID_OUT:
1445                 if (check_transfer_finish(td, urb))
1446                         td->type = USB_PID_ACK;
1447                 break;
1448         case USB_PID_SETUP:
1449                 if (urb->transfer_buffer_length == urb->actual_length)
1450                         td->type = USB_PID_ACK;
1451                 else if (usb_pipeout(urb->pipe))
1452                         td->type = USB_PID_OUT;
1453                 else
1454                         td->type = USB_PID_IN;
1455                 break;
1456         case USB_PID_ACK:
1457                 finish = 1;
1458                 break;
1459         }
1460
1461         if (finish || status != 0 || urb->unlinked)
1462                 finish_request(r8a66597, td, 0, urb, status);
1463         else
1464                 start_transfer(r8a66597, td);
1465 }
1466
1467 static int get_urb_error(struct r8a66597 *r8a66597, u16 pipenum)
1468 {
1469         struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1470
1471         if (td) {
1472                 u16 pid = r8a66597_read(r8a66597, td->pipe->pipectr) & PID;
1473
1474                 if (pid == PID_NAK)
1475                         return -ECONNRESET;
1476                 else
1477                         return -EPIPE;
1478         }
1479         return 0;
1480 }
1481
1482 static void irq_pipe_ready(struct r8a66597 *r8a66597)
1483 {
1484         u16 check;
1485         u16 pipenum;
1486         u16 mask;
1487         struct r8a66597_td *td;
1488
1489         mask = r8a66597_read(r8a66597, BRDYSTS)
1490                & r8a66597_read(r8a66597, BRDYENB);
1491         r8a66597_write(r8a66597, ~mask, BRDYSTS);
1492         if (mask & BRDY0) {
1493                 td = r8a66597_get_td(r8a66597, 0);
1494                 if (td && td->type == USB_PID_IN)
1495                         packet_read(r8a66597, 0);
1496                 else
1497                         pipe_irq_disable(r8a66597, 0);
1498                 check_next_phase(r8a66597, 0);
1499         }
1500
1501         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1502                 check = 1 << pipenum;
1503                 if (mask & check) {
1504                         td = r8a66597_get_td(r8a66597, pipenum);
1505                         if (unlikely(!td))
1506                                 continue;
1507
1508                         if (td->type == USB_PID_IN)
1509                                 packet_read(r8a66597, pipenum);
1510                         else if (td->type == USB_PID_OUT)
1511                                 packet_write(r8a66597, pipenum);
1512                 }
1513         }
1514 }
1515
1516 static void irq_pipe_empty(struct r8a66597 *r8a66597)
1517 {
1518         u16 tmp;
1519         u16 check;
1520         u16 pipenum;
1521         u16 mask;
1522         struct r8a66597_td *td;
1523
1524         mask = r8a66597_read(r8a66597, BEMPSTS)
1525                & r8a66597_read(r8a66597, BEMPENB);
1526         r8a66597_write(r8a66597, ~mask, BEMPSTS);
1527         if (mask & BEMP0) {
1528                 cfifo_change(r8a66597, 0);
1529                 td = r8a66597_get_td(r8a66597, 0);
1530                 if (td && td->type != USB_PID_OUT)
1531                         disable_irq_empty(r8a66597, 0);
1532                 check_next_phase(r8a66597, 0);
1533         }
1534
1535         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1536                 check = 1 << pipenum;
1537                 if (mask &  check) {
1538                         struct r8a66597_td *td;
1539                         td = r8a66597_get_td(r8a66597, pipenum);
1540                         if (unlikely(!td))
1541                                 continue;
1542
1543                         tmp = r8a66597_read(r8a66597, td->pipe->pipectr);
1544                         if ((tmp & INBUFM) == 0) {
1545                                 disable_irq_empty(r8a66597, pipenum);
1546                                 pipe_irq_disable(r8a66597, pipenum);
1547                                 finish_request(r8a66597, td, pipenum, td->urb,
1548                                                 0);
1549                         }
1550                 }
1551         }
1552 }
1553
1554 static void irq_pipe_nrdy(struct r8a66597 *r8a66597)
1555 {
1556         u16 check;
1557         u16 pipenum;
1558         u16 mask;
1559         int status;
1560
1561         mask = r8a66597_read(r8a66597, NRDYSTS)
1562                & r8a66597_read(r8a66597, NRDYENB);
1563         r8a66597_write(r8a66597, ~mask, NRDYSTS);
1564         if (mask & NRDY0) {
1565                 cfifo_change(r8a66597, 0);
1566                 status = get_urb_error(r8a66597, 0);
1567                 pipe_irq_disable(r8a66597, 0);
1568                 check_next_phase(r8a66597, status);
1569         }
1570
1571         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1572                 check = 1 << pipenum;
1573                 if (mask & check) {
1574                         struct r8a66597_td *td;
1575                         td = r8a66597_get_td(r8a66597, pipenum);
1576                         if (unlikely(!td))
1577                                 continue;
1578
1579                         status = get_urb_error(r8a66597, pipenum);
1580                         pipe_irq_disable(r8a66597, pipenum);
1581                         pipe_stop(r8a66597, td->pipe);
1582                         finish_request(r8a66597, td, pipenum, td->urb, status);
1583                 }
1584         }
1585 }
1586
1587 static irqreturn_t r8a66597_irq(struct usb_hcd *hcd)
1588 {
1589         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1590         u16 intsts0, intsts1, intsts2;
1591         u16 intenb0, intenb1, intenb2;
1592         u16 mask0, mask1, mask2;
1593         int status;
1594
1595         spin_lock(&r8a66597->lock);
1596
1597         intsts0 = r8a66597_read(r8a66597, INTSTS0);
1598         intsts1 = r8a66597_read(r8a66597, INTSTS1);
1599         intsts2 = r8a66597_read(r8a66597, INTSTS2);
1600         intenb0 = r8a66597_read(r8a66597, INTENB0);
1601         intenb1 = r8a66597_read(r8a66597, INTENB1);
1602         intenb2 = r8a66597_read(r8a66597, INTENB2);
1603
1604         mask2 = intsts2 & intenb2;
1605         mask1 = intsts1 & intenb1;
1606         mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY);
1607         if (mask2) {
1608                 if (mask2 & ATTCH) {
1609                         r8a66597_write(r8a66597, ~ATTCH, INTSTS2);
1610                         r8a66597_bclr(r8a66597, ATTCHE, INTENB2);
1611
1612                         /* start usb bus sampling */
1613                         start_root_hub_sampling(r8a66597, 1, 1);
1614                 }
1615                 if (mask2 & DTCH) {
1616                         r8a66597_write(r8a66597, ~DTCH, INTSTS2);
1617                         r8a66597_bclr(r8a66597, DTCHE, INTENB2);
1618                         r8a66597_usb_disconnect(r8a66597, 1);
1619                 }
1620                 if (mask2 & BCHG) {
1621                         r8a66597_write(r8a66597, ~BCHG, INTSTS2);
1622                         r8a66597_bclr(r8a66597, BCHGE, INTENB2);
1623                         usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597));
1624                 }
1625         }
1626
1627         if (mask1) {
1628                 if (mask1 & ATTCH) {
1629                         r8a66597_write(r8a66597, ~ATTCH, INTSTS1);
1630                         r8a66597_bclr(r8a66597, ATTCHE, INTENB1);
1631
1632                         /* start usb bus sampling */
1633                         start_root_hub_sampling(r8a66597, 0, 1);
1634                 }
1635                 if (mask1 & DTCH) {
1636                         r8a66597_write(r8a66597, ~DTCH, INTSTS1);
1637                         r8a66597_bclr(r8a66597, DTCHE, INTENB1);
1638                         r8a66597_usb_disconnect(r8a66597, 0);
1639                 }
1640                 if (mask1 & BCHG) {
1641                         r8a66597_write(r8a66597, ~BCHG, INTSTS1);
1642                         r8a66597_bclr(r8a66597, BCHGE, INTENB1);
1643                         usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597));
1644                 }
1645
1646                 if (mask1 & SIGN) {
1647                         r8a66597_write(r8a66597, ~SIGN, INTSTS1);
1648                         status = get_urb_error(r8a66597, 0);
1649                         check_next_phase(r8a66597, status);
1650                 }
1651                 if (mask1 & SACK) {
1652                         r8a66597_write(r8a66597, ~SACK, INTSTS1);
1653                         check_next_phase(r8a66597, 0);
1654                 }
1655         }
1656         if (mask0) {
1657                 if (mask0 & BRDY)
1658                         irq_pipe_ready(r8a66597);
1659                 if (mask0 & BEMP)
1660                         irq_pipe_empty(r8a66597);
1661                 if (mask0 & NRDY)
1662                         irq_pipe_nrdy(r8a66597);
1663         }
1664
1665         spin_unlock(&r8a66597->lock);
1666         return IRQ_HANDLED;
1667 }
1668
1669 /* this function must be called with interrupt disabled */
1670 static void r8a66597_root_hub_control(struct r8a66597 *r8a66597, int port)
1671 {
1672         u16 tmp;
1673         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1674
1675         if (rh->port & (1 << USB_PORT_FEAT_RESET)) {
1676                 unsigned long dvstctr_reg = get_dvstctr_reg(port);
1677
1678                 tmp = r8a66597_read(r8a66597, dvstctr_reg);
1679                 if ((tmp & USBRST) == USBRST) {
1680                         r8a66597_mdfy(r8a66597, UACT, USBRST | UACT,
1681                                       dvstctr_reg);
1682                         r8a66597_root_hub_start_polling(r8a66597);
1683                 } else
1684                         r8a66597_usb_connect(r8a66597, port);
1685         }
1686
1687         if (!(rh->port & (1 << USB_PORT_FEAT_CONNECTION))) {
1688                 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port));
1689                 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
1690         }
1691
1692         if (rh->scount > 0) {
1693                 tmp = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
1694                 if (tmp == rh->old_syssts) {
1695                         rh->scount--;
1696                         if (rh->scount == 0)
1697                                 r8a66597_check_syssts(r8a66597, port, tmp);
1698                         else
1699                                 r8a66597_root_hub_start_polling(r8a66597);
1700                 } else {
1701                         rh->scount = R8A66597_MAX_SAMPLING;
1702                         rh->old_syssts = tmp;
1703                         r8a66597_root_hub_start_polling(r8a66597);
1704                 }
1705         }
1706 }
1707
1708 static void r8a66597_interval_timer(unsigned long _r8a66597)
1709 {
1710         struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1711         unsigned long flags;
1712         u16 pipenum;
1713         struct r8a66597_td *td;
1714
1715         spin_lock_irqsave(&r8a66597->lock, flags);
1716
1717         for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1718                 if (!(r8a66597->interval_map & (1 << pipenum)))
1719                         continue;
1720                 if (timer_pending(&r8a66597->interval_timer[pipenum]))
1721                         continue;
1722
1723                 td = r8a66597_get_td(r8a66597, pipenum);
1724                 if (td)
1725                         start_transfer(r8a66597, td);
1726         }
1727
1728         spin_unlock_irqrestore(&r8a66597->lock, flags);
1729 }
1730
1731 static void r8a66597_td_timer(unsigned long _r8a66597)
1732 {
1733         struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1734         unsigned long flags;
1735         u16 pipenum;
1736         struct r8a66597_td *td, *new_td = NULL;
1737         struct r8a66597_pipe *pipe;
1738
1739         spin_lock_irqsave(&r8a66597->lock, flags);
1740         for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1741                 if (!(r8a66597->timeout_map & (1 << pipenum)))
1742                         continue;
1743                 if (timer_pending(&r8a66597->td_timer[pipenum]))
1744                         continue;
1745
1746                 td = r8a66597_get_td(r8a66597, pipenum);
1747                 if (!td) {
1748                         r8a66597->timeout_map &= ~(1 << pipenum);
1749                         continue;
1750                 }
1751
1752                 if (td->urb->actual_length) {
1753                         set_td_timer(r8a66597, td);
1754                         break;
1755                 }
1756
1757                 pipe = td->pipe;
1758                 pipe_stop(r8a66597, pipe);
1759
1760                 new_td = td;
1761                 do {
1762                         list_move_tail(&new_td->queue,
1763                                        &r8a66597->pipe_queue[pipenum]);
1764                         new_td = r8a66597_get_td(r8a66597, pipenum);
1765                         if (!new_td) {
1766                                 new_td = td;
1767                                 break;
1768                         }
1769                 } while (td != new_td && td->address == new_td->address);
1770
1771                 start_transfer(r8a66597, new_td);
1772
1773                 if (td == new_td)
1774                         r8a66597->timeout_map &= ~(1 << pipenum);
1775                 else
1776                         set_td_timer(r8a66597, new_td);
1777                 break;
1778         }
1779         spin_unlock_irqrestore(&r8a66597->lock, flags);
1780 }
1781
1782 static void r8a66597_timer(unsigned long _r8a66597)
1783 {
1784         struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1785         unsigned long flags;
1786         int port;
1787
1788         spin_lock_irqsave(&r8a66597->lock, flags);
1789
1790         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
1791                 r8a66597_root_hub_control(r8a66597, port);
1792
1793         spin_unlock_irqrestore(&r8a66597->lock, flags);
1794 }
1795
1796 static int check_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
1797 {
1798         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
1799
1800         if (dev && dev->address && dev->state != USB_STATE_CONFIGURED &&
1801             (urb->dev->state == USB_STATE_CONFIGURED))
1802                 return 1;
1803         else
1804                 return 0;
1805 }
1806
1807 static int r8a66597_start(struct usb_hcd *hcd)
1808 {
1809         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1810
1811         hcd->state = HC_STATE_RUNNING;
1812         return enable_controller(r8a66597);
1813 }
1814
1815 static void r8a66597_stop(struct usb_hcd *hcd)
1816 {
1817         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1818
1819         disable_controller(r8a66597);
1820 }
1821
1822 static void set_address_zero(struct r8a66597 *r8a66597, struct urb *urb)
1823 {
1824         unsigned int usb_address = usb_pipedevice(urb->pipe);
1825         u16 root_port, hub_port;
1826
1827         if (usb_address == 0) {
1828                 get_port_number(urb->dev->devpath,
1829                                 &root_port, &hub_port);
1830                 set_devadd_reg(r8a66597, 0,
1831                                get_r8a66597_usb_speed(urb->dev->speed),
1832                                get_parent_r8a66597_address(r8a66597, urb->dev),
1833                                hub_port, root_port);
1834         }
1835 }
1836
1837 static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597,
1838                                             struct urb *urb,
1839                                             struct usb_host_endpoint *hep)
1840 {
1841         struct r8a66597_td *td;
1842         u16 pipenum;
1843
1844         td = kzalloc(sizeof(struct r8a66597_td), GFP_ATOMIC);
1845         if (td == NULL)
1846                 return NULL;
1847
1848         pipenum = r8a66597_get_pipenum(urb, hep);
1849         td->pipenum = pipenum;
1850         td->pipe = hep->hcpriv;
1851         td->urb = urb;
1852         td->address = get_urb_to_r8a66597_addr(r8a66597, urb);
1853         td->maxpacket = usb_maxpacket(urb->dev, urb->pipe,
1854                                       !usb_pipein(urb->pipe));
1855         if (usb_pipecontrol(urb->pipe))
1856                 td->type = USB_PID_SETUP;
1857         else if (usb_pipein(urb->pipe))
1858                 td->type = USB_PID_IN;
1859         else
1860                 td->type = USB_PID_OUT;
1861         INIT_LIST_HEAD(&td->queue);
1862
1863         return td;
1864 }
1865
1866 static int r8a66597_urb_enqueue(struct usb_hcd *hcd,
1867                                 struct urb *urb,
1868                                 gfp_t mem_flags)
1869 {
1870         struct usb_host_endpoint *hep = urb->ep;
1871         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1872         struct r8a66597_td *td = NULL;
1873         int ret, request = 0;
1874         unsigned long flags;
1875
1876         spin_lock_irqsave(&r8a66597->lock, flags);
1877         if (!get_urb_to_r8a66597_dev(r8a66597, urb)) {
1878                 ret = -ENODEV;
1879                 goto error_not_linked;
1880         }
1881
1882         ret = usb_hcd_link_urb_to_ep(hcd, urb);
1883         if (ret)
1884                 goto error_not_linked;
1885
1886         if (!hep->hcpriv) {
1887                 hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe),
1888                                 GFP_ATOMIC);
1889                 if (!hep->hcpriv) {
1890                         ret = -ENOMEM;
1891                         goto error;
1892                 }
1893                 set_pipe_reg_addr(hep->hcpriv, R8A66597_PIPE_NO_DMA);
1894                 if (usb_pipeendpoint(urb->pipe))
1895                         init_pipe_info(r8a66597, urb, hep, &hep->desc);
1896         }
1897
1898         if (unlikely(check_pipe_config(r8a66597, urb)))
1899                 init_pipe_config(r8a66597, urb);
1900
1901         set_address_zero(r8a66597, urb);
1902         td = r8a66597_make_td(r8a66597, urb, hep);
1903         if (td == NULL) {
1904                 ret = -ENOMEM;
1905                 goto error;
1906         }
1907         if (list_empty(&r8a66597->pipe_queue[td->pipenum]))
1908                 request = 1;
1909         list_add_tail(&td->queue, &r8a66597->pipe_queue[td->pipenum]);
1910         urb->hcpriv = td;
1911
1912         if (request) {
1913                 if (td->pipe->info.timer_interval) {
1914                         r8a66597->interval_map |= 1 << td->pipenum;
1915                         mod_timer(&r8a66597->interval_timer[td->pipenum],
1916                                   jiffies + msecs_to_jiffies(
1917                                         td->pipe->info.timer_interval));
1918                 } else {
1919                         ret = start_transfer(r8a66597, td);
1920                         if (ret < 0) {
1921                                 list_del(&td->queue);
1922                                 kfree(td);
1923                         }
1924                 }
1925         } else
1926                 set_td_timer(r8a66597, td);
1927
1928 error:
1929         if (ret)
1930                 usb_hcd_unlink_urb_from_ep(hcd, urb);
1931 error_not_linked:
1932         spin_unlock_irqrestore(&r8a66597->lock, flags);
1933         return ret;
1934 }
1935
1936 static int r8a66597_urb_dequeue(struct usb_hcd *hcd, struct urb *urb,
1937                 int status)
1938 {
1939         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1940         struct r8a66597_td *td;
1941         unsigned long flags;
1942         int rc;
1943
1944         spin_lock_irqsave(&r8a66597->lock, flags);
1945         rc = usb_hcd_check_unlink_urb(hcd, urb, status);
1946         if (rc)
1947                 goto done;
1948
1949         if (urb->hcpriv) {
1950                 td = urb->hcpriv;
1951                 pipe_stop(r8a66597, td->pipe);
1952                 pipe_irq_disable(r8a66597, td->pipenum);
1953                 disable_irq_empty(r8a66597, td->pipenum);
1954                 finish_request(r8a66597, td, td->pipenum, urb, status);
1955         }
1956  done:
1957         spin_unlock_irqrestore(&r8a66597->lock, flags);
1958         return rc;
1959 }
1960
1961 static void r8a66597_endpoint_disable(struct usb_hcd *hcd,
1962                                       struct usb_host_endpoint *hep)
1963 {
1964         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1965         struct r8a66597_pipe *pipe = (struct r8a66597_pipe *)hep->hcpriv;
1966         struct r8a66597_td *td;
1967         struct urb *urb = NULL;
1968         u16 pipenum;
1969         unsigned long flags;
1970
1971         if (pipe == NULL)
1972                 return;
1973         pipenum = pipe->info.pipenum;
1974
1975         if (pipenum == 0) {
1976                 kfree(hep->hcpriv);
1977                 hep->hcpriv = NULL;
1978                 return;
1979         }
1980
1981         spin_lock_irqsave(&r8a66597->lock, flags);
1982         pipe_stop(r8a66597, pipe);
1983         pipe_irq_disable(r8a66597, pipenum);
1984         disable_irq_empty(r8a66597, pipenum);
1985         td = r8a66597_get_td(r8a66597, pipenum);
1986         if (td)
1987                 urb = td->urb;
1988         finish_request(r8a66597, td, pipenum, urb, -ESHUTDOWN);
1989         kfree(hep->hcpriv);
1990         hep->hcpriv = NULL;
1991         spin_unlock_irqrestore(&r8a66597->lock, flags);
1992 }
1993
1994 static int r8a66597_get_frame(struct usb_hcd *hcd)
1995 {
1996         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1997         return r8a66597_read(r8a66597, FRMNUM) & 0x03FF;
1998 }
1999
2000 static void collect_usb_address_map(struct usb_device *udev, unsigned long *map)
2001 {
2002         int chix;
2003
2004         if (udev->state == USB_STATE_CONFIGURED &&
2005             udev->parent && udev->parent->devnum > 1 &&
2006             udev->parent->descriptor.bDeviceClass == USB_CLASS_HUB)
2007                 map[udev->devnum/32] |= (1 << (udev->devnum % 32));
2008
2009         for (chix = 0; chix < udev->maxchild; chix++) {
2010                 struct usb_device *childdev = udev->children[chix];
2011
2012                 if (childdev)
2013                         collect_usb_address_map(childdev, map);
2014         }
2015 }
2016
2017 /* this function must be called with interrupt disabled */
2018 static struct r8a66597_device *get_r8a66597_device(struct r8a66597 *r8a66597,
2019                                                    int addr)
2020 {
2021         struct r8a66597_device *dev;
2022         struct list_head *list = &r8a66597->child_device;
2023
2024         list_for_each_entry(dev, list, device_list) {
2025                 if (!dev)
2026                         continue;
2027                 if (dev->usb_address != addr)
2028                         continue;
2029
2030                 return dev;
2031         }
2032
2033         printk(KERN_ERR "r8a66597: get_r8a66597_device fail.(%d)\n", addr);
2034         return NULL;
2035 }
2036
2037 static void update_usb_address_map(struct r8a66597 *r8a66597,
2038                                    struct usb_device *root_hub,
2039                                    unsigned long *map)
2040 {
2041         int i, j, addr;
2042         unsigned long diff;
2043         unsigned long flags;
2044
2045         for (i = 0; i < 4; i++) {
2046                 diff = r8a66597->child_connect_map[i] ^ map[i];
2047                 if (!diff)
2048                         continue;
2049
2050                 for (j = 0; j < 32; j++) {
2051                         if (!(diff & (1 << j)))
2052                                 continue;
2053
2054                         addr = i * 32 + j;
2055                         if (map[i] & (1 << j))
2056                                 set_child_connect_map(r8a66597, addr);
2057                         else {
2058                                 struct r8a66597_device *dev;
2059
2060                                 spin_lock_irqsave(&r8a66597->lock, flags);
2061                                 dev = get_r8a66597_device(r8a66597, addr);
2062                                 disable_r8a66597_pipe_all(r8a66597, dev);
2063                                 free_usb_address(r8a66597, dev);
2064                                 put_child_connect_map(r8a66597, addr);
2065                                 spin_unlock_irqrestore(&r8a66597->lock, flags);
2066                         }
2067                 }
2068         }
2069 }
2070
2071 static void r8a66597_check_detect_child(struct r8a66597 *r8a66597,
2072                                         struct usb_hcd *hcd)
2073 {
2074         struct usb_bus *bus;
2075         unsigned long now_map[4];
2076
2077         memset(now_map, 0, sizeof(now_map));
2078
2079         list_for_each_entry(bus, &usb_bus_list, bus_list) {
2080                 if (!bus->root_hub)
2081                         continue;
2082
2083                 if (bus->busnum != hcd->self.busnum)
2084                         continue;
2085
2086                 collect_usb_address_map(bus->root_hub, now_map);
2087                 update_usb_address_map(r8a66597, bus->root_hub, now_map);
2088         }
2089 }
2090
2091 static int r8a66597_hub_status_data(struct usb_hcd *hcd, char *buf)
2092 {
2093         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2094         unsigned long flags;
2095         int i;
2096
2097         r8a66597_check_detect_child(r8a66597, hcd);
2098
2099         spin_lock_irqsave(&r8a66597->lock, flags);
2100
2101         *buf = 0;       /* initialize (no change) */
2102
2103         for (i = 0; i < R8A66597_MAX_ROOT_HUB; i++) {
2104                 if (r8a66597->root_hub[i].port & 0xffff0000)
2105                         *buf |= 1 << (i + 1);
2106         }
2107
2108         spin_unlock_irqrestore(&r8a66597->lock, flags);
2109
2110         return (*buf != 0);
2111 }
2112
2113 static void r8a66597_hub_descriptor(struct r8a66597 *r8a66597,
2114                                     struct usb_hub_descriptor *desc)
2115 {
2116         desc->bDescriptorType = 0x29;
2117         desc->bHubContrCurrent = 0;
2118         desc->bNbrPorts = R8A66597_MAX_ROOT_HUB;
2119         desc->bDescLength = 9;
2120         desc->bPwrOn2PwrGood = 0;
2121         desc->wHubCharacteristics = cpu_to_le16(0x0011);
2122         desc->bitmap[0] = ((1 << R8A66597_MAX_ROOT_HUB) - 1) << 1;
2123         desc->bitmap[1] = ~0;
2124 }
2125
2126 static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
2127                                 u16 wIndex, char *buf, u16 wLength)
2128 {
2129         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2130         int ret;
2131         int port = (wIndex & 0x00FF) - 1;
2132         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
2133         unsigned long flags;
2134
2135         ret = 0;
2136
2137         spin_lock_irqsave(&r8a66597->lock, flags);
2138         switch (typeReq) {
2139         case ClearHubFeature:
2140         case SetHubFeature:
2141                 switch (wValue) {
2142                 case C_HUB_OVER_CURRENT:
2143                 case C_HUB_LOCAL_POWER:
2144                         break;
2145                 default:
2146                         goto error;
2147                 }
2148                 break;
2149         case ClearPortFeature:
2150                 if (wIndex > R8A66597_MAX_ROOT_HUB)
2151                         goto error;
2152                 if (wLength != 0)
2153                         goto error;
2154
2155                 switch (wValue) {
2156                 case USB_PORT_FEAT_ENABLE:
2157                         rh->port &= ~(1 << USB_PORT_FEAT_POWER);
2158                         break;
2159                 case USB_PORT_FEAT_SUSPEND:
2160                         break;
2161                 case USB_PORT_FEAT_POWER:
2162                         r8a66597_port_power(r8a66597, port, 0);
2163                         break;
2164                 case USB_PORT_FEAT_C_ENABLE:
2165                 case USB_PORT_FEAT_C_SUSPEND:
2166                 case USB_PORT_FEAT_C_CONNECTION:
2167                 case USB_PORT_FEAT_C_OVER_CURRENT:
2168                 case USB_PORT_FEAT_C_RESET:
2169                         break;
2170                 default:
2171                         goto error;
2172                 }
2173                 rh->port &= ~(1 << wValue);
2174                 break;
2175         case GetHubDescriptor:
2176                 r8a66597_hub_descriptor(r8a66597,
2177                                         (struct usb_hub_descriptor *)buf);
2178                 break;
2179         case GetHubStatus:
2180                 *buf = 0x00;
2181                 break;
2182         case GetPortStatus:
2183                 if (wIndex > R8A66597_MAX_ROOT_HUB)
2184                         goto error;
2185                 *(__le32 *)buf = cpu_to_le32(rh->port);
2186                 break;
2187         case SetPortFeature:
2188                 if (wIndex > R8A66597_MAX_ROOT_HUB)
2189                         goto error;
2190                 if (wLength != 0)
2191                         goto error;
2192
2193                 switch (wValue) {
2194                 case USB_PORT_FEAT_SUSPEND:
2195                         break;
2196                 case USB_PORT_FEAT_POWER:
2197                         r8a66597_port_power(r8a66597, port, 1);
2198                         rh->port |= (1 << USB_PORT_FEAT_POWER);
2199                         break;
2200                 case USB_PORT_FEAT_RESET: {
2201                         struct r8a66597_device *dev = rh->dev;
2202
2203                         rh->port |= (1 << USB_PORT_FEAT_RESET);
2204
2205                         disable_r8a66597_pipe_all(r8a66597, dev);
2206                         free_usb_address(r8a66597, dev);
2207
2208                         r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT,
2209                                       get_dvstctr_reg(port));
2210                         mod_timer(&r8a66597->rh_timer,
2211                                   jiffies + msecs_to_jiffies(50));
2212                         }
2213                         break;
2214                 default:
2215                         goto error;
2216                 }
2217                 rh->port |= 1 << wValue;
2218                 break;
2219         default:
2220 error:
2221                 ret = -EPIPE;
2222                 break;
2223         }
2224
2225         spin_unlock_irqrestore(&r8a66597->lock, flags);
2226         return ret;
2227 }
2228
2229 #if defined(CONFIG_PM)
2230 static int r8a66597_bus_suspend(struct usb_hcd *hcd)
2231 {
2232         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2233         int port;
2234
2235         dbg("%s", __func__);
2236
2237         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++) {
2238                 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
2239                 unsigned long dvstctr_reg = get_dvstctr_reg(port);
2240
2241                 if (!(rh->port & (1 << USB_PORT_FEAT_ENABLE)))
2242                         continue;
2243
2244                 dbg("suspend port = %d", port);
2245                 r8a66597_bclr(r8a66597, UACT, dvstctr_reg);     /* suspend */
2246                 rh->port |= 1 << USB_PORT_FEAT_SUSPEND;
2247
2248                 if (rh->dev->udev->do_remote_wakeup) {
2249                         msleep(3);      /* waiting last SOF */
2250                         r8a66597_bset(r8a66597, RWUPE, dvstctr_reg);
2251                         r8a66597_write(r8a66597, ~BCHG, get_intsts_reg(port));
2252                         r8a66597_bset(r8a66597, BCHGE, get_intenb_reg(port));
2253                 }
2254         }
2255
2256         r8a66597->bus_suspended = 1;
2257
2258         return 0;
2259 }
2260
2261 static int r8a66597_bus_resume(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_SUSPEND)))
2273                         continue;
2274
2275                 dbg("resume port = %d", port);
2276                 rh->port &= ~(1 << USB_PORT_FEAT_SUSPEND);
2277                 rh->port |= 1 << USB_PORT_FEAT_C_SUSPEND;
2278                 r8a66597_mdfy(r8a66597, RESUME, RESUME | UACT, dvstctr_reg);
2279                 msleep(50);
2280                 r8a66597_mdfy(r8a66597, UACT, RESUME | UACT, dvstctr_reg);
2281         }
2282
2283         return 0;
2284
2285 }
2286 #else
2287 #define r8a66597_bus_suspend    NULL
2288 #define r8a66597_bus_resume     NULL
2289 #endif
2290
2291 static struct hc_driver r8a66597_hc_driver = {
2292         .description =          hcd_name,
2293         .hcd_priv_size =        sizeof(struct r8a66597),
2294         .irq =                  r8a66597_irq,
2295
2296         /*
2297          * generic hardware linkage
2298          */
2299         .flags =                HCD_USB2,
2300
2301         .start =                r8a66597_start,
2302         .stop =                 r8a66597_stop,
2303
2304         /*
2305          * managing i/o requests and associated device resources
2306          */
2307         .urb_enqueue =          r8a66597_urb_enqueue,
2308         .urb_dequeue =          r8a66597_urb_dequeue,
2309         .endpoint_disable =     r8a66597_endpoint_disable,
2310
2311         /*
2312          * periodic schedule support
2313          */
2314         .get_frame_number =     r8a66597_get_frame,
2315
2316         /*
2317          * root hub support
2318          */
2319         .hub_status_data =      r8a66597_hub_status_data,
2320         .hub_control =          r8a66597_hub_control,
2321         .bus_suspend =          r8a66597_bus_suspend,
2322         .bus_resume =           r8a66597_bus_resume,
2323 };
2324
2325 #if defined(CONFIG_PM)
2326 static int r8a66597_suspend(struct platform_device *pdev, pm_message_t state)
2327 {
2328         struct r8a66597         *r8a66597 = dev_get_drvdata(&pdev->dev);
2329         int port;
2330
2331         dbg("%s", __func__);
2332
2333         disable_controller(r8a66597);
2334
2335         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++) {
2336                 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
2337
2338                 rh->port = 0x00000000;
2339         }
2340
2341         return 0;
2342 }
2343
2344 static int r8a66597_resume(struct platform_device *pdev)
2345 {
2346         struct r8a66597         *r8a66597 = dev_get_drvdata(&pdev->dev);
2347         struct usb_hcd          *hcd = r8a66597_to_hcd(r8a66597);
2348
2349         dbg("%s", __func__);
2350
2351         enable_controller(r8a66597);
2352         usb_root_hub_lost_power(hcd->self.root_hub);
2353
2354         return 0;
2355 }
2356 #else   /* if defined(CONFIG_PM) */
2357 #define r8a66597_suspend        NULL
2358 #define r8a66597_resume         NULL
2359 #endif
2360
2361 static int __init_or_module r8a66597_remove(struct platform_device *pdev)
2362 {
2363         struct r8a66597         *r8a66597 = dev_get_drvdata(&pdev->dev);
2364         struct usb_hcd          *hcd = r8a66597_to_hcd(r8a66597);
2365
2366         del_timer_sync(&r8a66597->rh_timer);
2367         usb_remove_hcd(hcd);
2368         iounmap((void *)r8a66597->reg);
2369 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) && defined(CONFIG_HAVE_CLK)
2370         clk_put(r8a66597->clk);
2371 #endif
2372         usb_put_hcd(hcd);
2373         return 0;
2374 }
2375
2376 static int __init r8a66597_probe(struct platform_device *pdev)
2377 {
2378 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) && defined(CONFIG_HAVE_CLK)
2379         char clk_name[8];
2380 #endif
2381         struct resource *res = NULL, *ires;
2382         int irq = -1;
2383         void __iomem *reg = NULL;
2384         struct usb_hcd *hcd = NULL;
2385         struct r8a66597 *r8a66597;
2386         int ret = 0;
2387         int i;
2388         unsigned long irq_trigger;
2389
2390         if (pdev->dev.dma_mask) {
2391                 ret = -EINVAL;
2392                 dev_err(&pdev->dev, "dma not supported\n");
2393                 goto clean_up;
2394         }
2395
2396         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2397         if (!res) {
2398                 ret = -ENODEV;
2399                 dev_err(&pdev->dev, "platform_get_resource error.\n");
2400                 goto clean_up;
2401         }
2402
2403         ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
2404         if (!ires) {
2405                 ret = -ENODEV;
2406                 dev_err(&pdev->dev,
2407                         "platform_get_resource IORESOURCE_IRQ error.\n");
2408                 goto clean_up;
2409         }
2410
2411         irq = ires->start;
2412         irq_trigger = ires->flags & IRQF_TRIGGER_MASK;
2413
2414         reg = ioremap(res->start, resource_size(res));
2415         if (reg == NULL) {
2416                 ret = -ENOMEM;
2417                 dev_err(&pdev->dev, "ioremap error.\n");
2418                 goto clean_up;
2419         }
2420
2421         /* initialize hcd */
2422         hcd = usb_create_hcd(&r8a66597_hc_driver, &pdev->dev, (char *)hcd_name);
2423         if (!hcd) {
2424                 ret = -ENOMEM;
2425                 dev_err(&pdev->dev, "Failed to create hcd\n");
2426                 goto clean_up;
2427         }
2428         r8a66597 = hcd_to_r8a66597(hcd);
2429         memset(r8a66597, 0, sizeof(struct r8a66597));
2430         dev_set_drvdata(&pdev->dev, r8a66597);
2431
2432 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) && defined(CONFIG_HAVE_CLK)
2433         snprintf(clk_name, sizeof(clk_name), "usb%d", pdev->id);
2434         r8a66597->clk = clk_get(&pdev->dev, clk_name);
2435         if (IS_ERR(r8a66597->clk)) {
2436                 dev_err(&pdev->dev, "cannot get clock \"%s\"\n", clk_name);
2437                 ret = PTR_ERR(r8a66597->clk);
2438                 goto clean_up2;
2439         }
2440 #endif
2441
2442         spin_lock_init(&r8a66597->lock);
2443         init_timer(&r8a66597->rh_timer);
2444         r8a66597->rh_timer.function = r8a66597_timer;
2445         r8a66597->rh_timer.data = (unsigned long)r8a66597;
2446         r8a66597->reg = (unsigned long)reg;
2447
2448         for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) {
2449                 INIT_LIST_HEAD(&r8a66597->pipe_queue[i]);
2450                 init_timer(&r8a66597->td_timer[i]);
2451                 r8a66597->td_timer[i].function = r8a66597_td_timer;
2452                 r8a66597->td_timer[i].data = (unsigned long)r8a66597;
2453                 setup_timer(&r8a66597->interval_timer[i],
2454                                 r8a66597_interval_timer,
2455                                 (unsigned long)r8a66597);
2456         }
2457         INIT_LIST_HEAD(&r8a66597->child_device);
2458
2459         hcd->rsrc_start = res->start;
2460
2461         /* irq_sense setting on cmdline takes precedence over resource
2462          * settings, so the introduction of irqflags in IRQ resourse
2463          * won't disturb existing setups */
2464         switch (irq_sense) {
2465                 case INTL:
2466                         irq_trigger = IRQF_TRIGGER_LOW;
2467                         break;
2468                 case 0:
2469                         irq_trigger = IRQF_TRIGGER_FALLING;
2470                         break;
2471                 case 0xff:
2472                         if (irq_trigger)
2473                                 irq_sense = (irq_trigger & IRQF_TRIGGER_LOW) ?
2474                                             INTL : 0;
2475                         else {
2476                                 irq_sense = INTL;
2477                                 irq_trigger = IRQF_TRIGGER_LOW;
2478                         }
2479                         break;
2480                 default:
2481                         dev_err(&pdev->dev, "Unknown irq_sense value.\n");
2482         }
2483
2484         ret = usb_add_hcd(hcd, irq, IRQF_DISABLED | irq_trigger);
2485         if (ret != 0) {
2486                 dev_err(&pdev->dev, "Failed to add hcd\n");
2487                 goto clean_up3;
2488         }
2489
2490         return 0;
2491
2492 clean_up3:
2493 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) && defined(CONFIG_HAVE_CLK)
2494         clk_put(r8a66597->clk);
2495 clean_up2:
2496 #endif
2497         usb_put_hcd(hcd);
2498
2499 clean_up:
2500         if (reg)
2501                 iounmap(reg);
2502
2503         return ret;
2504 }
2505
2506 static struct platform_driver r8a66597_driver = {
2507         .probe =        r8a66597_probe,
2508         .remove =       r8a66597_remove,
2509         .suspend =      r8a66597_suspend,
2510         .resume =       r8a66597_resume,
2511         .driver         = {
2512                 .name = (char *) hcd_name,
2513                 .owner  = THIS_MODULE,
2514         },
2515 };
2516
2517 static int __init r8a66597_init(void)
2518 {
2519         if (usb_disabled())
2520                 return -ENODEV;
2521
2522         printk(KERN_INFO KBUILD_MODNAME ": driver %s, %s\n", hcd_name,
2523                DRIVER_VERSION);
2524         return platform_driver_register(&r8a66597_driver);
2525 }
2526 module_init(r8a66597_init);
2527
2528 static void __exit r8a66597_cleanup(void)
2529 {
2530         platform_driver_unregister(&r8a66597_driver);
2531 }
2532 module_exit(r8a66597_cleanup);
2533