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  "2009-05-26"
  50
  51 static const char hcd_name[] = "r8a66597_hcd";
  52
  53 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum);
  54 static int r8a66597_get_frame(struct usb_hcd *hcd);
  55
  56 /* this function must be called with interrupt disabled */
  57 static void enable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
  58                             unsigned long reg)
  59 {
  60         u16 tmp;
  61
  62         tmp = r8a66597_read(r8a66597, INTENB0);
  63         r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
  64         r8a66597_bset(r8a66597, 1 << pipenum, reg);
  65         r8a66597_write(r8a66597, tmp, INTENB0);
  66 }
  67
  68 /* this function must be called with interrupt disabled */
  69 static void disable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
  70                              unsigned long reg)
  71 {
  72         u16 tmp;
  73
  74         tmp = r8a66597_read(r8a66597, INTENB0);
  75         r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
  76         r8a66597_bclr(r8a66597, 1 << pipenum, reg);
  77         r8a66597_write(r8a66597, tmp, INTENB0);
  78 }
  79
  80 static void set_devadd_reg(struct r8a66597 *r8a66597, u8 r8a66597_address,
  81                            u16 usbspd, u8 upphub, u8 hubport, int port)
  82 {
  83         u16 val;
  84         unsigned long devadd_reg = get_devadd_addr(r8a66597_address);
  85
  86         val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001);
  87         r8a66597_write(r8a66597, val, devadd_reg);
  88 }
  89
  90 static int r8a66597_clock_enable(struct r8a66597 *r8a66597)
  91 {
  92         u16 tmp;
  93         int i = 0;
  94
  95 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
  96 #if defined(CONFIG_HAVE_CLK)
  97         clk_enable(r8a66597->clk);
  98 #endif
  99         do {
 100                 r8a66597_write(r8a66597, SCKE, SYSCFG0);
 101                 tmp = r8a66597_read(r8a66597, SYSCFG0);
 102                 if (i++ > 1000) {
 103                         printk(KERN_ERR "r8a66597: register access fail.\n");
 104                         return -ENXIO;
 105                 }
 106         } while ((tmp & SCKE) != SCKE);
 107         r8a66597_write(r8a66597, 0x04, 0x02);
 108 #else
 109         do {
 110                 r8a66597_write(r8a66597, USBE, SYSCFG0);
 111                 tmp = r8a66597_read(r8a66597, SYSCFG0);
 112                 if (i++ > 1000) {
 113                         printk(KERN_ERR "r8a66597: register access fail.\n");
 114                         return -ENXIO;
 115                 }
 116         } while ((tmp & USBE) != USBE);
 117         r8a66597_bclr(r8a66597, USBE, SYSCFG0);
 118         r8a66597_mdfy(r8a66597, get_xtal_from_pdata(r8a66597->pdata), XTAL,
 119                         SYSCFG0);
 120
 121         i = 0;
 122         r8a66597_bset(r8a66597, XCKE, SYSCFG0);
 123         do {
 124                 msleep(1);
 125                 tmp = r8a66597_read(r8a66597, SYSCFG0);
 126                 if (i++ > 500) {
 127                         printk(KERN_ERR "r8a66597: register access fail.\n");
 128                         return -ENXIO;
 129                 }
 130         } while ((tmp & SCKE) != SCKE);
 131 #endif  /* #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) */
 132
 133         return 0;
 134 }
 135
 136 static void r8a66597_clock_disable(struct r8a66597 *r8a66597)
 137 {
 138         r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
 139         udelay(1);
 140 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
 141 #if defined(CONFIG_HAVE_CLK)
 142         clk_disable(r8a66597->clk);
 143 #endif
 144 #else
 145         r8a66597_bclr(r8a66597, PLLC, SYSCFG0);
 146         r8a66597_bclr(r8a66597, XCKE, SYSCFG0);
 147         r8a66597_bclr(r8a66597, USBE, SYSCFG0);
 148 #endif
 149 }
 150
 151 static void r8a66597_enable_port(struct r8a66597 *r8a66597, int port)
 152 {
 153         u16 val;
 154
 155         val = port ? DRPD : DCFM | DRPD;
 156         r8a66597_bset(r8a66597, val, get_syscfg_reg(port));
 157         r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port));
 158
 159         r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, get_dmacfg_reg(port));
 160         r8a66597_bclr(r8a66597, DTCHE, get_intenb_reg(port));
 161         r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
 162 }
 163
 164 static void r8a66597_disable_port(struct r8a66597 *r8a66597, int port)
 165 {
 166         u16 val, tmp;
 167
 168         r8a66597_write(r8a66597, 0, get_intenb_reg(port));
 169         r8a66597_write(r8a66597, 0, get_intsts_reg(port));
 170
 171         r8a66597_port_power(r8a66597, port, 0);
 172
 173         do {
 174                 tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS;
 175                 udelay(640);
 176         } while (tmp == EDGESTS);
 177
 178         val = port ? DRPD : DCFM | DRPD;
 179         r8a66597_bclr(r8a66597, val, get_syscfg_reg(port));
 180         r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port));
 181 }
 182
 183 static int enable_controller(struct r8a66597 *r8a66597)
 184 {
 185         int ret, port;
 186         u16 vif = r8a66597->pdata->vif ? LDRV : 0;
 187         u16 irq_sense = r8a66597->irq_sense_low ? INTL : 0;
 188         u16 endian = r8a66597->pdata->endian ? BIGEND : 0;
 189
 190         ret = r8a66597_clock_enable(r8a66597);
 191         if (ret < 0)
 192                 return ret;
 193
 194         r8a66597_bset(r8a66597, vif & LDRV, PINCFG);
 195         r8a66597_bset(r8a66597, USBE, SYSCFG0);
 196
 197         r8a66597_bset(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
 198         r8a66597_bset(r8a66597, irq_sense & INTL, SOFCFG);
 199         r8a66597_bset(r8a66597, BRDY0, BRDYENB);
 200         r8a66597_bset(r8a66597, BEMP0, BEMPENB);
 201
 202         r8a66597_bset(r8a66597, endian & BIGEND, CFIFOSEL);
 203         r8a66597_bset(r8a66597, endian & BIGEND, D0FIFOSEL);
 204         r8a66597_bset(r8a66597, endian & BIGEND, D1FIFOSEL);
 205         r8a66597_bset(r8a66597, TRNENSEL, SOFCFG);
 206
 207         r8a66597_bset(r8a66597, SIGNE | SACKE, INTENB1);
 208
 209         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
 210                 r8a66597_enable_port(r8a66597, port);
 211
 212         return 0;
 213 }
 214
 215 static void disable_controller(struct r8a66597 *r8a66597)
 216 {
 217         int port;
 218
 219         r8a66597_write(r8a66597, 0, INTENB0);
 220         r8a66597_write(r8a66597, 0, INTSTS0);
 221
 222         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
 223                 r8a66597_disable_port(r8a66597, port);
 224
 225         r8a66597_clock_disable(r8a66597);
 226 }
 227
 228 static int get_parent_r8a66597_address(struct r8a66597 *r8a66597,
 229                                        struct usb_device *udev)
 230 {
 231         struct r8a66597_device *dev;
 232
 233         if (udev->parent && udev->parent->devnum != 1)
 234                 udev = udev->parent;
 235
 236         dev = dev_get_drvdata(&udev->dev);
 237         if (dev)
 238                 return dev->address;
 239         else
 240                 return 0;
 241 }
 242
 243 static int is_child_device(char *devpath)
 244 {
 245         return (devpath[2] ? 1 : 0);
 246 }
 247
 248 static int is_hub_limit(char *devpath)
 249 {
 250         return ((strlen(devpath) >= 4) ? 1 : 0);
 251 }
 252
 253 static void get_port_number(char *devpath, u16 *root_port, u16 *hub_port)
 254 {
 255         if (root_port) {
 256                 *root_port = (devpath[0] & 0x0F) - 1;
 257                 if (*root_port >= R8A66597_MAX_ROOT_HUB)
 258                         printk(KERN_ERR "r8a66597: Illegal root port number.\n");
 259         }
 260         if (hub_port)
 261                 *hub_port = devpath[2] & 0x0F;
 262 }
 263
 264 static u16 get_r8a66597_usb_speed(enum usb_device_speed speed)
 265 {
 266         u16 usbspd = 0;
 267
 268         switch (speed) {
 269         case USB_SPEED_LOW:
 270                 usbspd = LSMODE;
 271                 break;
 272         case USB_SPEED_FULL:
 273                 usbspd = FSMODE;
 274                 break;
 275         case USB_SPEED_HIGH:
 276                 usbspd = HSMODE;
 277                 break;
 278         default:
 279                 printk(KERN_ERR "r8a66597: unknown speed\n");
 280                 break;
 281         }
 282
 283         return usbspd;
 284 }
 285
 286 static void set_child_connect_map(struct r8a66597 *r8a66597, int address)
 287 {
 288         int idx;
 289
 290         idx = address / 32;
 291         r8a66597->child_connect_map[idx] |= 1 << (address % 32);
 292 }
 293
 294 static void put_child_connect_map(struct r8a66597 *r8a66597, int address)
 295 {
 296         int idx;
 297
 298         idx = address / 32;
 299         r8a66597->child_connect_map[idx] &= ~(1 << (address % 32));
 300 }
 301
 302 static void set_pipe_reg_addr(struct r8a66597_pipe *pipe, u8 dma_ch)
 303 {
 304         u16 pipenum = pipe->info.pipenum;
 305         const unsigned long fifoaddr[] = {D0FIFO, D1FIFO, CFIFO};
 306         const unsigned long fifosel[] = {D0FIFOSEL, D1FIFOSEL, CFIFOSEL};
 307         const unsigned long fifoctr[] = {D0FIFOCTR, D1FIFOCTR, CFIFOCTR};
 308
 309         if (dma_ch > R8A66597_PIPE_NO_DMA)      /* dma fifo not use? */
 310                 dma_ch = R8A66597_PIPE_NO_DMA;
 311
 312         pipe->fifoaddr = fifoaddr[dma_ch];
 313         pipe->fifosel = fifosel[dma_ch];
 314         pipe->fifoctr = fifoctr[dma_ch];
 315
 316         if (pipenum == 0)
 317                 pipe->pipectr = DCPCTR;
 318         else
 319                 pipe->pipectr = get_pipectr_addr(pipenum);
 320
 321         if (check_bulk_or_isoc(pipenum)) {
 322                 pipe->pipetre = get_pipetre_addr(pipenum);
 323                 pipe->pipetrn = get_pipetrn_addr(pipenum);
 324         } else {
 325                 pipe->pipetre = 0;
 326                 pipe->pipetrn = 0;
 327         }
 328 }
 329
 330 static struct r8a66597_device *
 331 get_urb_to_r8a66597_dev(struct r8a66597 *r8a66597, struct urb *urb)
 332 {
 333         if (usb_pipedevice(urb->pipe) == 0)
 334                 return &r8a66597->device0;
 335
 336         return dev_get_drvdata(&urb->dev->dev);
 337 }
 338
 339 static int make_r8a66597_device(struct r8a66597 *r8a66597,
 340                                 struct urb *urb, u8 addr)
 341 {
 342         struct r8a66597_device *dev;
 343         int usb_address = urb->setup_packet[2]; /* urb->pipe is address 0 */
 344
 345         dev = kzalloc(sizeof(struct r8a66597_device), GFP_ATOMIC);
 346         if (dev == NULL)
 347                 return -ENOMEM;
 348
 349         dev_set_drvdata(&urb->dev->dev, dev);
 350         dev->udev = urb->dev;
 351         dev->address = addr;
 352         dev->usb_address = usb_address;
 353         dev->state = USB_STATE_ADDRESS;
 354         dev->ep_in_toggle = 0;
 355         dev->ep_out_toggle = 0;
 356         INIT_LIST_HEAD(&dev->device_list);
 357         list_add_tail(&dev->device_list, &r8a66597->child_device);
 358
 359         get_port_number(urb->dev->devpath, &dev->root_port, &dev->hub_port);
 360         if (!is_child_device(urb->dev->devpath))
 361                 r8a66597->root_hub[dev->root_port].dev = dev;
 362
 363         set_devadd_reg(r8a66597, dev->address,
 364                        get_r8a66597_usb_speed(urb->dev->speed),
 365                        get_parent_r8a66597_address(r8a66597, urb->dev),
 366                        dev->hub_port, dev->root_port);
 367
 368         return 0;
 369 }
 370
 371 /* this function must be called with interrupt disabled */
 372 static u8 alloc_usb_address(struct r8a66597 *r8a66597, struct urb *urb)
 373 {
 374         u8 addr;        /* R8A66597's address */
 375         struct r8a66597_device *dev;
 376
 377         if (is_hub_limit(urb->dev->devpath)) {
 378                 dev_err(&urb->dev->dev, "External hub limit reached.\n");
 379                 return 0;
 380         }
 381
 382         dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 383         if (dev && dev->state >= USB_STATE_ADDRESS)
 384                 return dev->address;
 385
 386         for (addr = 1; addr <= R8A66597_MAX_DEVICE; addr++) {
 387                 if (r8a66597->address_map & (1 << addr))
 388                         continue;
 389
 390                 dbg("alloc_address: r8a66597_addr=%d", addr);
 391                 r8a66597->address_map |= 1 << addr;
 392
 393                 if (make_r8a66597_device(r8a66597, urb, addr) < 0)
 394                         return 0;
 395
 396                 return addr;
 397         }
 398
 399         dev_err(&urb->dev->dev,
 400                 "cannot communicate with a USB device more than 10.(%x)\n",
 401                 r8a66597->address_map);
 402
 403         return 0;
 404 }
 405
 406 /* this function must be called with interrupt disabled */
 407 static void free_usb_address(struct r8a66597 *r8a66597,
 408                              struct r8a66597_device *dev)
 409 {
 410         int port;
 411
 412         if (!dev)
 413                 return;
 414
 415         dbg("free_addr: addr=%d", dev->address);
 416
 417         dev->state = USB_STATE_DEFAULT;
 418         r8a66597->address_map &= ~(1 << dev->address);
 419         dev->address = 0;
 420         dev_set_drvdata(&dev->udev->dev, NULL);
 421         list_del(&dev->device_list);
 422         kfree(dev);
 423
 424         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++) {
 425                 if (r8a66597->root_hub[port].dev == dev) {
 426                         r8a66597->root_hub[port].dev = NULL;
 427                         break;
 428                 }
 429         }
 430 }
 431
 432 static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg,
 433                               u16 mask, u16 loop)
 434 {
 435         u16 tmp;
 436         int i = 0;
 437
 438         do {
 439                 tmp = r8a66597_read(r8a66597, reg);
 440                 if (i++ > 1000000) {
 441                         printk(KERN_ERR "r8a66597: register%lx, loop %x "
 442                                "is timeout\n", reg, loop);
 443                         break;
 444                 }
 445                 ndelay(1);
 446         } while ((tmp & mask) != loop);
 447 }
 448
 449 /* this function must be called with interrupt disabled */
 450 static void pipe_start(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
 451 {
 452         u16 tmp;
 453
 454         tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
 455         if ((pipe->info.pipenum != 0) & ((tmp & PID_STALL) != 0)) /* stall? */
 456                 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
 457         r8a66597_mdfy(r8a66597, PID_BUF, PID, pipe->pipectr);
 458 }
 459
 460 /* this function must be called with interrupt disabled */
 461 static void pipe_stop(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
 462 {
 463         u16 tmp;
 464
 465         tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
 466         if ((tmp & PID_STALL11) != PID_STALL11) /* force stall? */
 467                 r8a66597_mdfy(r8a66597, PID_STALL, PID, pipe->pipectr);
 468         r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
 469         r8a66597_reg_wait(r8a66597, pipe->pipectr, PBUSY, 0);
 470 }
 471
 472 /* this function must be called with interrupt disabled */
 473 static void clear_all_buffer(struct r8a66597 *r8a66597,
 474                              struct r8a66597_pipe *pipe)
 475 {
 476         u16 tmp;
 477
 478         if (!pipe || pipe->info.pipenum == 0)
 479                 return;
 480
 481         pipe_stop(r8a66597, pipe);
 482         r8a66597_bset(r8a66597, ACLRM, pipe->pipectr);
 483         tmp = r8a66597_read(r8a66597, pipe->pipectr);
 484         tmp = r8a66597_read(r8a66597, pipe->pipectr);
 485         tmp = r8a66597_read(r8a66597, pipe->pipectr);
 486         r8a66597_bclr(r8a66597, ACLRM, pipe->pipectr);
 487 }
 488
 489 /* this function must be called with interrupt disabled */
 490 static void r8a66597_pipe_toggle(struct r8a66597 *r8a66597,
 491                                  struct r8a66597_pipe *pipe, int toggle)
 492 {
 493         if (toggle)
 494                 r8a66597_bset(r8a66597, SQSET, pipe->pipectr);
 495         else
 496                 r8a66597_bset(r8a66597, SQCLR, pipe->pipectr);
 497 }
 498
 499 /* this function must be called with interrupt disabled */
 500 static inline void cfifo_change(struct r8a66597 *r8a66597, u16 pipenum)
 501 {
 502         r8a66597_mdfy(r8a66597, MBW | pipenum, MBW | CURPIPE, CFIFOSEL);
 503         r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, pipenum);
 504 }
 505
 506 /* this function must be called with interrupt disabled */
 507 static inline void fifo_change_from_pipe(struct r8a66597 *r8a66597,
 508                                          struct r8a66597_pipe *pipe)
 509 {
 510         cfifo_change(r8a66597, 0);
 511         r8a66597_mdfy(r8a66597, MBW | 0, MBW | CURPIPE, D0FIFOSEL);
 512         r8a66597_mdfy(r8a66597, MBW | 0, MBW | CURPIPE, D1FIFOSEL);
 513
 514         r8a66597_mdfy(r8a66597, MBW | pipe->info.pipenum, MBW | CURPIPE,
 515                       pipe->fifosel);
 516         r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, pipe->info.pipenum);
 517 }
 518
 519 static u16 r8a66597_get_pipenum(struct urb *urb, struct usb_host_endpoint *hep)
 520 {
 521         struct r8a66597_pipe *pipe = hep->hcpriv;
 522
 523         if (usb_pipeendpoint(urb->pipe) == 0)
 524                 return 0;
 525         else
 526                 return pipe->info.pipenum;
 527 }
 528
 529 static u16 get_urb_to_r8a66597_addr(struct r8a66597 *r8a66597, struct urb *urb)
 530 {
 531         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 532
 533         return (usb_pipedevice(urb->pipe) == 0) ? 0 : dev->address;
 534 }
 535
 536 static unsigned short *get_toggle_pointer(struct r8a66597_device *dev,
 537                                           int urb_pipe)
 538 {
 539         if (!dev)
 540                 return NULL;
 541
 542         return usb_pipein(urb_pipe) ? &dev->ep_in_toggle : &dev->ep_out_toggle;
 543 }
 544
 545 /* this function must be called with interrupt disabled */
 546 static void pipe_toggle_set(struct r8a66597 *r8a66597,
 547                             struct r8a66597_pipe *pipe,
 548                             struct urb *urb, int set)
 549 {
 550         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 551         unsigned char endpoint = usb_pipeendpoint(urb->pipe);
 552         unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
 553
 554         if (!toggle)
 555                 return;
 556
 557         if (set)
 558                 *toggle |= 1 << endpoint;
 559         else
 560                 *toggle &= ~(1 << endpoint);
 561 }
 562
 563 /* this function must be called with interrupt disabled */
 564 static void pipe_toggle_save(struct r8a66597 *r8a66597,
 565                              struct r8a66597_pipe *pipe,
 566                              struct urb *urb)
 567 {
 568         if (r8a66597_read(r8a66597, pipe->pipectr) & SQMON)
 569                 pipe_toggle_set(r8a66597, pipe, urb, 1);
 570         else
 571                 pipe_toggle_set(r8a66597, pipe, urb, 0);
 572 }
 573
 574 /* this function must be called with interrupt disabled */
 575 static void pipe_toggle_restore(struct r8a66597 *r8a66597,
 576                                 struct r8a66597_pipe *pipe,
 577                                 struct urb *urb)
 578 {
 579         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 580         unsigned char endpoint = usb_pipeendpoint(urb->pipe);
 581         unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
 582
 583         if (!toggle)
 584                 return;
 585
 586         r8a66597_pipe_toggle(r8a66597, pipe, *toggle & (1 << endpoint));
 587 }
 588
 589 /* this function must be called with interrupt disabled */
 590 static void pipe_buffer_setting(struct r8a66597 *r8a66597,
 591                                 struct r8a66597_pipe_info *info)
 592 {
 593         u16 val = 0;
 594
 595         if (info->pipenum == 0)
 596                 return;
 597
 598         r8a66597_bset(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
 599         r8a66597_bclr(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
 600         r8a66597_write(r8a66597, info->pipenum, PIPESEL);
 601         if (!info->dir_in)
 602                 val |= R8A66597_DIR;
 603         if (info->type == R8A66597_BULK && info->dir_in)
 604                 val |= R8A66597_DBLB | R8A66597_SHTNAK;
 605         val |= info->type | info->epnum;
 606         r8a66597_write(r8a66597, val, PIPECFG);
 607
 608         r8a66597_write(r8a66597, (info->buf_bsize << 10) | (info->bufnum),
 609                        PIPEBUF);
 610         r8a66597_write(r8a66597, make_devsel(info->address) | info->maxpacket,
 611                        PIPEMAXP);
 612         r8a66597_write(r8a66597, info->interval, PIPEPERI);
 613 }
 614
 615 /* this function must be called with interrupt disabled */
 616 static void pipe_setting(struct r8a66597 *r8a66597, struct r8a66597_td *td)
 617 {
 618         struct r8a66597_pipe_info *info;
 619         struct urb *urb = td->urb;
 620
 621         if (td->pipenum > 0) {
 622                 info = &td->pipe->info;
 623                 cfifo_change(r8a66597, 0);
 624                 pipe_buffer_setting(r8a66597, info);
 625
 626                 if (!usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe),
 627                                    usb_pipeout(urb->pipe)) &&
 628                     !usb_pipecontrol(urb->pipe)) {
 629                         r8a66597_pipe_toggle(r8a66597, td->pipe, 0);
 630                         pipe_toggle_set(r8a66597, td->pipe, urb, 0);
 631                         clear_all_buffer(r8a66597, td->pipe);
 632                         usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
 633                                       usb_pipeout(urb->pipe), 1);
 634                 }
 635                 pipe_toggle_restore(r8a66597, td->pipe, urb);
 636         }
 637 }
 638
 639 /* this function must be called with interrupt disabled */
 640 static u16 get_empty_pipenum(struct r8a66597 *r8a66597,
 641                              struct usb_endpoint_descriptor *ep)
 642 {
 643         u16 array[R8A66597_MAX_NUM_PIPE], i = 0, min;
 644
 645         memset(array, 0, sizeof(array));
 646         switch (usb_endpoint_type(ep)) {
 647         case USB_ENDPOINT_XFER_BULK:
 648                 if (usb_endpoint_dir_in(ep))
 649                         array[i++] = 4;
 650                 else {
 651                         array[i++] = 3;
 652                         array[i++] = 5;
 653                 }
 654                 break;
 655         case USB_ENDPOINT_XFER_INT:
 656                 if (usb_endpoint_dir_in(ep)) {
 657                         array[i++] = 6;
 658                         array[i++] = 7;
 659                         array[i++] = 8;
 660                 } else
 661                         array[i++] = 9;
 662                 break;
 663         case USB_ENDPOINT_XFER_ISOC:
 664                 if (usb_endpoint_dir_in(ep))
 665                         array[i++] = 2;
 666                 else
 667                         array[i++] = 1;
 668                 break;
 669         default:
 670                 printk(KERN_ERR "r8a66597: Illegal type\n");
 671                 return 0;
 672         }
 673
 674         i = 1;
 675         min = array[0];
 676         while (array[i] != 0) {
 677                 if (r8a66597->pipe_cnt[min] > r8a66597->pipe_cnt[array[i]])
 678                         min = array[i];
 679                 i++;
 680         }
 681
 682         return min;
 683 }
 684
 685 static u16 get_r8a66597_type(__u8 type)
 686 {
 687         u16 r8a66597_type;
 688
 689         switch (type) {
 690         case USB_ENDPOINT_XFER_BULK:
 691                 r8a66597_type = R8A66597_BULK;
 692                 break;
 693         case USB_ENDPOINT_XFER_INT:
 694                 r8a66597_type = R8A66597_INT;
 695                 break;
 696         case USB_ENDPOINT_XFER_ISOC:
 697                 r8a66597_type = R8A66597_ISO;
 698                 break;
 699         default:
 700                 printk(KERN_ERR "r8a66597: Illegal type\n");
 701                 r8a66597_type = 0x0000;
 702                 break;
 703         }
 704
 705         return r8a66597_type;
 706 }
 707
 708 static u16 get_bufnum(u16 pipenum)
 709 {
 710         u16 bufnum = 0;
 711
 712         if (pipenum == 0)
 713                 bufnum = 0;
 714         else if (check_bulk_or_isoc(pipenum))
 715                 bufnum = 8 + (pipenum - 1) * R8A66597_BUF_BSIZE*2;
 716         else if (check_interrupt(pipenum))
 717                 bufnum = 4 + (pipenum - 6);
 718         else
 719                 printk(KERN_ERR "r8a66597: Illegal pipenum (%d)\n", pipenum);
 720
 721         return bufnum;
 722 }
 723
 724 static u16 get_buf_bsize(u16 pipenum)
 725 {
 726         u16 buf_bsize = 0;
 727
 728         if (pipenum == 0)
 729                 buf_bsize = 3;
 730         else if (check_bulk_or_isoc(pipenum))
 731                 buf_bsize = R8A66597_BUF_BSIZE - 1;
 732         else if (check_interrupt(pipenum))
 733                 buf_bsize = 0;
 734         else
 735                 printk(KERN_ERR "r8a66597: Illegal pipenum (%d)\n", pipenum);
 736
 737         return buf_bsize;
 738 }
 739
 740 /* this function must be called with interrupt disabled */
 741 static void enable_r8a66597_pipe_dma(struct r8a66597 *r8a66597,
 742                                      struct r8a66597_device *dev,
 743                                      struct r8a66597_pipe *pipe,
 744                                      struct urb *urb)
 745 {
 746 #if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
 747         int i;
 748         struct r8a66597_pipe_info *info = &pipe->info;
 749
 750         if ((pipe->info.pipenum != 0) && (info->type != R8A66597_INT)) {
 751                 for (i = 0; i < R8A66597_MAX_DMA_CHANNEL; i++) {
 752                         if ((r8a66597->dma_map & (1 << i)) != 0)
 753                                 continue;
 754
 755                         dev_info(&dev->udev->dev,
 756                                  "address %d, EndpointAddress 0x%02x use "
 757                                  "DMA FIFO\n", usb_pipedevice(urb->pipe),
 758                                  info->dir_in ?
 759                                         USB_ENDPOINT_DIR_MASK + info->epnum
 760                                         : info->epnum);
 761
 762                         r8a66597->dma_map |= 1 << i;
 763                         dev->dma_map |= 1 << i;
 764                         set_pipe_reg_addr(pipe, i);
 765
 766                         cfifo_change(r8a66597, 0);
 767                         r8a66597_mdfy(r8a66597, MBW | pipe->info.pipenum,
 768                                       MBW | CURPIPE, pipe->fifosel);
 769
 770                         r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE,
 771                                           pipe->info.pipenum);
 772                         r8a66597_bset(r8a66597, BCLR, pipe->fifoctr);
 773                         break;
 774                 }
 775         }
 776 #endif  /* #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) */
 777 }
 778
 779 /* this function must be called with interrupt disabled */
 780 static void enable_r8a66597_pipe(struct r8a66597 *r8a66597, struct urb *urb,
 781                                  struct usb_host_endpoint *hep,
 782                                  struct r8a66597_pipe_info *info)
 783 {
 784         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 785         struct r8a66597_pipe *pipe = hep->hcpriv;
 786
 787         dbg("enable_pipe:");
 788
 789         pipe->info = *info;
 790         set_pipe_reg_addr(pipe, R8A66597_PIPE_NO_DMA);
 791         r8a66597->pipe_cnt[pipe->info.pipenum]++;
 792         dev->pipe_cnt[pipe->info.pipenum]++;
 793
 794         enable_r8a66597_pipe_dma(r8a66597, dev, pipe, urb);
 795 }
 796
 797 /* this function must be called with interrupt disabled */
 798 static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address)
 799 {
 800         struct r8a66597_td *td, *next;
 801         struct urb *urb;
 802         struct list_head *list = &r8a66597->pipe_queue[pipenum];
 803
 804         if (list_empty(list))
 805                 return;
 806
 807         list_for_each_entry_safe(td, next, list, queue) {
 808                 if (!td)
 809                         continue;
 810                 if (td->address != address)
 811                         continue;
 812
 813                 urb = td->urb;
 814                 list_del(&td->queue);
 815                 kfree(td);
 816
 817                 if (urb) {
 818                         usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597),
 819                                         urb);
 820
 821                         spin_unlock(&r8a66597->lock);
 822                         usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb,
 823                                         -ENODEV);
 824                         spin_lock(&r8a66597->lock);
 825                 }
 826                 break;
 827         }
 828 }
 829
 830 /* this function must be called with interrupt disabled */
 831 static void disable_r8a66597_pipe_all(struct r8a66597 *r8a66597,
 832                                       struct r8a66597_device *dev)
 833 {
 834         int check_ep0 = 0;
 835         u16 pipenum;
 836
 837         if (!dev)
 838                 return;
 839
 840         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
 841                 if (!dev->pipe_cnt[pipenum])
 842                         continue;
 843
 844                 if (!check_ep0) {
 845                         check_ep0 = 1;
 846                         force_dequeue(r8a66597, 0, dev->address);
 847                 }
 848
 849                 r8a66597->pipe_cnt[pipenum] -= dev->pipe_cnt[pipenum];
 850                 dev->pipe_cnt[pipenum] = 0;
 851                 force_dequeue(r8a66597, pipenum, dev->address);
 852         }
 853
 854         dbg("disable_pipe");
 855
 856         r8a66597->dma_map &= ~(dev->dma_map);
 857         dev->dma_map = 0;
 858 }
 859
 860 static u16 get_interval(struct urb *urb, __u8 interval)
 861 {
 862         u16 time = 1;
 863         int i;
 864
 865         if (urb->dev->speed == USB_SPEED_HIGH) {
 866                 if (interval > IITV)
 867                         time = IITV;
 868                 else
 869                         time = interval ? interval - 1 : 0;
 870         } else {
 871                 if (interval > 128) {
 872                         time = IITV;
 873                 } else {
 874                         /* calculate the nearest value for PIPEPERI */
 875                         for (i = 0; i < 7; i++) {
 876                                 if ((1 << i) < interval &&
 877                                     (1 << (i + 1) > interval))
 878                                         time = 1 << i;
 879                         }
 880                 }
 881         }
 882
 883         return time;
 884 }
 885
 886 static unsigned long get_timer_interval(struct urb *urb, __u8 interval)
 887 {
 888         __u8 i;
 889         unsigned long time = 1;
 890
 891         if (usb_pipeisoc(urb->pipe))
 892                 return 0;
 893
 894         if (get_r8a66597_usb_speed(urb->dev->speed) == HSMODE) {
 895                 for (i = 0; i < (interval - 1); i++)
 896                         time *= 2;
 897                 time = time * 125 / 1000;       /* uSOF -> msec */
 898         } else {
 899                 time = interval;
 900         }
 901
 902         return time;
 903 }
 904
 905 /* this function must be called with interrupt disabled */
 906 static void init_pipe_info(struct r8a66597 *r8a66597, struct urb *urb,
 907                            struct usb_host_endpoint *hep,
 908                            struct usb_endpoint_descriptor *ep)
 909 {
 910         struct r8a66597_pipe_info info;
 911
 912         info.pipenum = get_empty_pipenum(r8a66597, ep);
 913         info.address = get_urb_to_r8a66597_addr(r8a66597, urb);
 914         info.epnum = usb_endpoint_num(ep);
 915         info.maxpacket = le16_to_cpu(ep->wMaxPacketSize);
 916         info.type = get_r8a66597_type(usb_endpoint_type(ep));
 917         info.bufnum = get_bufnum(info.pipenum);
 918         info.buf_bsize = get_buf_bsize(info.pipenum);
 919         if (info.type == R8A66597_BULK) {
 920                 info.interval = 0;
 921                 info.timer_interval = 0;
 922         } else {
 923                 info.interval = get_interval(urb, ep->bInterval);
 924                 info.timer_interval = get_timer_interval(urb, ep->bInterval);
 925         }
 926         if (usb_endpoint_dir_in(ep))
 927                 info.dir_in = 1;
 928         else
 929                 info.dir_in = 0;
 930
 931         enable_r8a66597_pipe(r8a66597, urb, hep, &info);
 932 }
 933
 934 static void init_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
 935 {
 936         struct r8a66597_device *dev;
 937
 938         dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 939         dev->state = USB_STATE_CONFIGURED;
 940 }
 941
 942 static void pipe_irq_enable(struct r8a66597 *r8a66597, struct urb *urb,
 943                             u16 pipenum)
 944 {
 945         if (pipenum == 0 && usb_pipeout(urb->pipe))
 946                 enable_irq_empty(r8a66597, pipenum);
 947         else
 948                 enable_irq_ready(r8a66597, pipenum);
 949
 950         if (!usb_pipeisoc(urb->pipe))
 951                 enable_irq_nrdy(r8a66597, pipenum);
 952 }
 953
 954 static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum)
 955 {
 956         disable_irq_ready(r8a66597, pipenum);
 957         disable_irq_nrdy(r8a66597, pipenum);
 958 }
 959
 960 static void r8a66597_root_hub_start_polling(struct r8a66597 *r8a66597)
 961 {
 962         mod_timer(&r8a66597->rh_timer,
 963                         jiffies + msecs_to_jiffies(R8A66597_RH_POLL_TIME));
 964 }
 965
 966 static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port,
 967                                         int connect)
 968 {
 969         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
 970
 971         rh->old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
 972         rh->scount = R8A66597_MAX_SAMPLING;
 973         if (connect)
 974                 rh->port |= 1 << USB_PORT_FEAT_CONNECTION;
 975         else
 976                 rh->port &= ~(1 << USB_PORT_FEAT_CONNECTION);
 977         rh->port |= 1 << USB_PORT_FEAT_C_CONNECTION;
 978
 979         r8a66597_root_hub_start_polling(r8a66597);
 980 }
 981
 982 /* this function must be called with interrupt disabled */
 983 static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port,
 984                                         u16 syssts)
 985 {
 986         if (syssts == SE0) {
 987                 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port));
 988                 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
 989                 return;
 990         }
 991
 992         if (syssts == FS_JSTS)
 993                 r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port));
 994         else if (syssts == LS_JSTS)
 995                 r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port));
 996
 997         r8a66597_write(r8a66597, ~DTCH, get_intsts_reg(port));
 998         r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port));
 999
1000         if (r8a66597->bus_suspended)
1001                 usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597));
1002 }
1003
1004 /* this function must be called with interrupt disabled */
1005 static void r8a66597_usb_connect(struct r8a66597 *r8a66597, int port)
1006 {
1007         u16 speed = get_rh_usb_speed(r8a66597, port);
1008         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1009
1010         if (speed == HSMODE)
1011                 rh->port |= (1 << USB_PORT_FEAT_HIGHSPEED);
1012         else if (speed == LSMODE)
1013                 rh->port |= (1 << USB_PORT_FEAT_LOWSPEED);
1014
1015         rh->port &= ~(1 << USB_PORT_FEAT_RESET);
1016         rh->port |= 1 << USB_PORT_FEAT_ENABLE;
1017 }
1018
1019 /* this function must be called with interrupt disabled */
1020 static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597, int port)
1021 {
1022         struct r8a66597_device *dev = r8a66597->root_hub[port].dev;
1023
1024         disable_r8a66597_pipe_all(r8a66597, dev);
1025         free_usb_address(r8a66597, dev);
1026
1027         start_root_hub_sampling(r8a66597, port, 0);
1028 }
1029
1030 /* this function must be called with interrupt disabled */
1031 static void prepare_setup_packet(struct r8a66597 *r8a66597,
1032                                  struct r8a66597_td *td)
1033 {
1034         int i;
1035         __le16 *p = (__le16 *)td->urb->setup_packet;
1036         unsigned long setup_addr = USBREQ;
1037
1038         r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket,
1039                        DCPMAXP);
1040         r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1);
1041
1042         for (i = 0; i < 4; i++) {
1043                 r8a66597_write(r8a66597, le16_to_cpu(p[i]), setup_addr);
1044                 setup_addr += 2;
1045         }
1046         r8a66597_write(r8a66597, SUREQ, DCPCTR);
1047 }
1048
1049 /* this function must be called with interrupt disabled */
1050 static void prepare_packet_read(struct r8a66597 *r8a66597,
1051                                 struct r8a66597_td *td)
1052 {
1053         struct urb *urb = td->urb;
1054
1055         if (usb_pipecontrol(urb->pipe)) {
1056                 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
1057                 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
1058                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1059                 if (urb->actual_length == 0) {
1060                         r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1061                         r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1062                 }
1063                 pipe_irq_disable(r8a66597, td->pipenum);
1064                 pipe_start(r8a66597, td->pipe);
1065                 pipe_irq_enable(r8a66597, urb, td->pipenum);
1066         } else {
1067                 if (urb->actual_length == 0) {
1068                         pipe_irq_disable(r8a66597, td->pipenum);
1069                         pipe_setting(r8a66597, td);
1070                         pipe_stop(r8a66597, td->pipe);
1071                         r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
1072
1073                         if (td->pipe->pipetre) {
1074                                 r8a66597_write(r8a66597, TRCLR,
1075                                                 td->pipe->pipetre);
1076                                 r8a66597_write(r8a66597,
1077                                                 DIV_ROUND_UP
1078                                                   (urb->transfer_buffer_length,
1079                                                    td->maxpacket),
1080                                                 td->pipe->pipetrn);
1081                                 r8a66597_bset(r8a66597, TRENB,
1082                                                 td->pipe->pipetre);
1083                         }
1084
1085                         pipe_start(r8a66597, td->pipe);
1086                         pipe_irq_enable(r8a66597, urb, td->pipenum);
1087                 }
1088         }
1089 }
1090
1091 /* this function must be called with interrupt disabled */
1092 static void prepare_packet_write(struct r8a66597 *r8a66597,
1093                                  struct r8a66597_td *td)
1094 {
1095         u16 tmp;
1096         struct urb *urb = td->urb;
1097
1098         if (usb_pipecontrol(urb->pipe)) {
1099                 pipe_stop(r8a66597, td->pipe);
1100                 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
1101                 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
1102                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1103                 if (urb->actual_length == 0) {
1104                         r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1105                         r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1106                 }
1107         } else {
1108                 if (urb->actual_length == 0)
1109                         pipe_setting(r8a66597, td);
1110                 if (td->pipe->pipetre)
1111                         r8a66597_bclr(r8a66597, TRENB, td->pipe->pipetre);
1112         }
1113         r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
1114
1115         fifo_change_from_pipe(r8a66597, td->pipe);
1116         tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1117         if (unlikely((tmp & FRDY) == 0))
1118                 pipe_irq_enable(r8a66597, urb, td->pipenum);
1119         else
1120                 packet_write(r8a66597, td->pipenum);
1121         pipe_start(r8a66597, td->pipe);
1122 }
1123
1124 /* this function must be called with interrupt disabled */
1125 static void prepare_status_packet(struct r8a66597 *r8a66597,
1126                                   struct r8a66597_td *td)
1127 {
1128         struct urb *urb = td->urb;
1129
1130         r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1131         pipe_stop(r8a66597, td->pipe);
1132
1133         if (urb->setup_packet[0] & USB_ENDPOINT_DIR_MASK) {
1134                 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
1135                 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
1136                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1137                 r8a66597_write(r8a66597, ~BEMP0, BEMPSTS);
1138                 r8a66597_write(r8a66597, BCLR | BVAL, CFIFOCTR);
1139                 enable_irq_empty(r8a66597, 0);
1140         } else {
1141                 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
1142                 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
1143                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1144                 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1145                 enable_irq_ready(r8a66597, 0);
1146         }
1147         enable_irq_nrdy(r8a66597, 0);
1148         pipe_start(r8a66597, td->pipe);
1149 }
1150
1151 static int is_set_address(unsigned char *setup_packet)
1152 {
1153         if (((setup_packet[0] & USB_TYPE_MASK) == USB_TYPE_STANDARD) &&
1154                         setup_packet[1] == USB_REQ_SET_ADDRESS)
1155                 return 1;
1156         else
1157                 return 0;
1158 }
1159
1160 /* this function must be called with interrupt disabled */
1161 static int start_transfer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1162 {
1163         BUG_ON(!td);
1164
1165         switch (td->type) {
1166         case USB_PID_SETUP:
1167                 if (is_set_address(td->urb->setup_packet)) {
1168                         td->set_address = 1;
1169                         td->urb->setup_packet[2] = alloc_usb_address(r8a66597,
1170                                                                      td->urb);
1171                         if (td->urb->setup_packet[2] == 0)
1172                                 return -EPIPE;
1173                 }
1174                 prepare_setup_packet(r8a66597, td);
1175                 break;
1176         case USB_PID_IN:
1177                 prepare_packet_read(r8a66597, td);
1178                 break;
1179         case USB_PID_OUT:
1180                 prepare_packet_write(r8a66597, td);
1181                 break;
1182         case USB_PID_ACK:
1183                 prepare_status_packet(r8a66597, td);
1184                 break;
1185         default:
1186                 printk(KERN_ERR "r8a66597: invalid type.\n");
1187                 break;
1188         }
1189
1190         return 0;
1191 }
1192
1193 static int check_transfer_finish(struct r8a66597_td *td, struct urb *urb)
1194 {
1195         if (usb_pipeisoc(urb->pipe)) {
1196                 if (urb->number_of_packets == td->iso_cnt)
1197                         return 1;
1198         }
1199
1200         /* control or bulk or interrupt */
1201         if ((urb->transfer_buffer_length <= urb->actual_length) ||
1202             (td->short_packet) || (td->zero_packet))
1203                 return 1;
1204
1205         return 0;
1206 }
1207
1208 /* this function must be called with interrupt disabled */
1209 static void set_td_timer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1210 {
1211         unsigned long time;
1212
1213         BUG_ON(!td);
1214
1215         if (!list_empty(&r8a66597->pipe_queue[td->pipenum]) &&
1216             !usb_pipecontrol(td->urb->pipe) && usb_pipein(td->urb->pipe)) {
1217                 r8a66597->timeout_map |= 1 << td->pipenum;
1218                 switch (usb_pipetype(td->urb->pipe)) {
1219                 case PIPE_INTERRUPT:
1220                 case PIPE_ISOCHRONOUS:
1221                         time = 30;
1222                         break;
1223                 default:
1224                         time = 300;
1225                         break;
1226                 }
1227
1228                 mod_timer(&r8a66597->td_timer[td->pipenum],
1229                           jiffies + msecs_to_jiffies(time));
1230         }
1231 }
1232
1233 /* this function must be called with interrupt disabled */
1234 static void finish_request(struct r8a66597 *r8a66597, struct r8a66597_td *td,
1235                 u16 pipenum, struct urb *urb, int status)
1236 __releases(r8a66597->lock) __acquires(r8a66597->lock)
1237 {
1238         int restart = 0;
1239         struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
1240
1241         r8a66597->timeout_map &= ~(1 << pipenum);
1242
1243         if (likely(td)) {
1244                 if (td->set_address && (status != 0 || urb->unlinked))
1245                         r8a66597->address_map &= ~(1 << urb->setup_packet[2]);
1246
1247                 pipe_toggle_save(r8a66597, td->pipe, urb);
1248                 list_del(&td->queue);
1249                 kfree(td);
1250         }
1251
1252         if (!list_empty(&r8a66597->pipe_queue[pipenum]))
1253                 restart = 1;
1254
1255         if (likely(urb)) {
1256                 if (usb_pipeisoc(urb->pipe))
1257                         urb->start_frame = r8a66597_get_frame(hcd);
1258
1259                 usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb);
1260                 spin_unlock(&r8a66597->lock);
1261                 usb_hcd_giveback_urb(hcd, urb, status);
1262                 spin_lock(&r8a66597->lock);
1263         }
1264
1265         if (restart) {
1266                 td = r8a66597_get_td(r8a66597, pipenum);
1267                 if (unlikely(!td))
1268                         return;
1269
1270                 start_transfer(r8a66597, td);
1271                 set_td_timer(r8a66597, td);
1272         }
1273 }
1274
1275 static void packet_read(struct r8a66597 *r8a66597, u16 pipenum)
1276 {
1277         u16 tmp;
1278         int rcv_len, bufsize, urb_len, size;
1279         u16 *buf;
1280         struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1281         struct urb *urb;
1282         int finish = 0;
1283         int status = 0;
1284
1285         if (unlikely(!td))
1286                 return;
1287         urb = td->urb;
1288
1289         fifo_change_from_pipe(r8a66597, td->pipe);
1290         tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1291         if (unlikely((tmp & FRDY) == 0)) {
1292                 pipe_stop(r8a66597, td->pipe);
1293                 pipe_irq_disable(r8a66597, pipenum);
1294                 printk(KERN_ERR "r8a66597: in fifo not ready (%d)\n", pipenum);
1295                 finish_request(r8a66597, td, pipenum, td->urb, -EPIPE);
1296                 return;
1297         }
1298
1299         /* prepare parameters */
1300         rcv_len = tmp & DTLN;
1301         if (usb_pipeisoc(urb->pipe)) {
1302                 buf = (u16 *)(urb->transfer_buffer +
1303                                 urb->iso_frame_desc[td->iso_cnt].offset);
1304                 urb_len = urb->iso_frame_desc[td->iso_cnt].length;
1305         } else {
1306                 buf = (void *)urb->transfer_buffer + urb->actual_length;
1307                 urb_len = urb->transfer_buffer_length - urb->actual_length;
1308         }
1309         bufsize = min(urb_len, (int) td->maxpacket);
1310         if (rcv_len <= bufsize) {
1311                 size = rcv_len;
1312         } else {
1313                 size = bufsize;
1314                 status = -EOVERFLOW;
1315                 finish = 1;
1316         }
1317
1318         /* update parameters */
1319         urb->actual_length += size;
1320         if (rcv_len == 0)
1321                 td->zero_packet = 1;
1322         if (rcv_len < bufsize) {
1323                 td->short_packet = 1;
1324         }
1325         if (usb_pipeisoc(urb->pipe)) {
1326                 urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1327                 urb->iso_frame_desc[td->iso_cnt].status = status;
1328                 td->iso_cnt++;
1329                 finish = 0;
1330         }
1331
1332         /* check transfer finish */
1333         if (finish || check_transfer_finish(td, urb)) {
1334                 pipe_stop(r8a66597, td->pipe);
1335                 pipe_irq_disable(r8a66597, pipenum);
1336                 finish = 1;
1337         }
1338
1339         /* read fifo */
1340         if (urb->transfer_buffer) {
1341                 if (size == 0)
1342                         r8a66597_write(r8a66597, BCLR, td->pipe->fifoctr);
1343                 else
1344                         r8a66597_read_fifo(r8a66597, td->pipe->fifoaddr,
1345                                            buf, size);
1346         }
1347
1348         if (finish && pipenum != 0)
1349                 finish_request(r8a66597, td, pipenum, urb, status);
1350 }
1351
1352 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum)
1353 {
1354         u16 tmp;
1355         int bufsize, size;
1356         u16 *buf;
1357         struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1358         struct urb *urb;
1359
1360         if (unlikely(!td))
1361                 return;
1362         urb = td->urb;
1363
1364         fifo_change_from_pipe(r8a66597, td->pipe);
1365         tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1366         if (unlikely((tmp & FRDY) == 0)) {
1367                 pipe_stop(r8a66597, td->pipe);
1368                 pipe_irq_disable(r8a66597, pipenum);
1369                 printk(KERN_ERR "r8a66597: out fifo not ready (%d)\n", pipenum);
1370                 finish_request(r8a66597, td, pipenum, urb, -EPIPE);
1371                 return;
1372         }
1373
1374         /* prepare parameters */
1375         bufsize = td->maxpacket;
1376         if (usb_pipeisoc(urb->pipe)) {
1377                 buf = (u16 *)(urb->transfer_buffer +
1378                                 urb->iso_frame_desc[td->iso_cnt].offset);
1379                 size = min(bufsize,
1380                            (int)urb->iso_frame_desc[td->iso_cnt].length);
1381         } else {
1382                 buf = (u16 *)(urb->transfer_buffer + urb->actual_length);
1383                 size = min_t(u32, bufsize,
1384                            urb->transfer_buffer_length - urb->actual_length);
1385         }
1386
1387         /* write fifo */
1388         if (pipenum > 0)
1389                 r8a66597_write(r8a66597, ~(1 << pipenum), BEMPSTS);
1390         if (urb->transfer_buffer) {
1391                 r8a66597_write_fifo(r8a66597, td->pipe->fifoaddr, buf, size);
1392                 if (!usb_pipebulk(urb->pipe) || td->maxpacket != size)
1393                         r8a66597_write(r8a66597, BVAL, td->pipe->fifoctr);
1394         }
1395
1396         /* update parameters */
1397         urb->actual_length += size;
1398         if (usb_pipeisoc(urb->pipe)) {
1399                 urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1400                 urb->iso_frame_desc[td->iso_cnt].status = 0;
1401                 td->iso_cnt++;
1402         }
1403
1404         /* check transfer finish */
1405         if (check_transfer_finish(td, urb)) {
1406                 disable_irq_ready(r8a66597, pipenum);
1407                 enable_irq_empty(r8a66597, pipenum);
1408                 if (!usb_pipeisoc(urb->pipe))
1409                         enable_irq_nrdy(r8a66597, pipenum);
1410         } else
1411                 pipe_irq_enable(r8a66597, urb, pipenum);
1412 }
1413
1414
1415 static void check_next_phase(struct r8a66597 *r8a66597, int status)
1416 {
1417         struct r8a66597_td *td = r8a66597_get_td(r8a66597, 0);
1418         struct urb *urb;
1419         u8 finish = 0;
1420
1421         if (unlikely(!td))
1422                 return;
1423         urb = td->urb;
1424
1425         switch (td->type) {
1426         case USB_PID_IN:
1427         case USB_PID_OUT:
1428                 if (check_transfer_finish(td, urb))
1429                         td->type = USB_PID_ACK;
1430                 break;
1431         case USB_PID_SETUP:
1432                 if (urb->transfer_buffer_length == urb->actual_length)
1433                         td->type = USB_PID_ACK;
1434                 else if (usb_pipeout(urb->pipe))
1435                         td->type = USB_PID_OUT;
1436                 else
1437                         td->type = USB_PID_IN;
1438                 break;
1439         case USB_PID_ACK:
1440                 finish = 1;
1441                 break;
1442         }
1443
1444         if (finish || status != 0 || urb->unlinked)
1445                 finish_request(r8a66597, td, 0, urb, status);
1446         else
1447                 start_transfer(r8a66597, td);
1448 }
1449
1450 static int get_urb_error(struct r8a66597 *r8a66597, u16 pipenum)
1451 {
1452         struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1453
1454         if (td) {
1455                 u16 pid = r8a66597_read(r8a66597, td->pipe->pipectr) & PID;
1456
1457                 if (pid == PID_NAK)
1458                         return -ECONNRESET;
1459                 else
1460                         return -EPIPE;
1461         }
1462         return 0;
1463 }
1464
1465 static void irq_pipe_ready(struct r8a66597 *r8a66597)
1466 {
1467         u16 check;
1468         u16 pipenum;
1469         u16 mask;
1470         struct r8a66597_td *td;
1471
1472         mask = r8a66597_read(r8a66597, BRDYSTS)
1473                & r8a66597_read(r8a66597, BRDYENB);
1474         r8a66597_write(r8a66597, ~mask, BRDYSTS);
1475         if (mask & BRDY0) {
1476                 td = r8a66597_get_td(r8a66597, 0);
1477                 if (td && td->type == USB_PID_IN)
1478                         packet_read(r8a66597, 0);
1479                 else
1480                         pipe_irq_disable(r8a66597, 0);
1481                 check_next_phase(r8a66597, 0);
1482         }
1483
1484         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1485                 check = 1 << pipenum;
1486                 if (mask & check) {
1487                         td = r8a66597_get_td(r8a66597, pipenum);
1488                         if (unlikely(!td))
1489                                 continue;
1490
1491                         if (td->type == USB_PID_IN)
1492                                 packet_read(r8a66597, pipenum);
1493                         else if (td->type == USB_PID_OUT)
1494                                 packet_write(r8a66597, pipenum);
1495                 }
1496         }
1497 }
1498
1499 static void irq_pipe_empty(struct r8a66597 *r8a66597)
1500 {
1501         u16 tmp;
1502         u16 check;
1503         u16 pipenum;
1504         u16 mask;
1505         struct r8a66597_td *td;
1506
1507         mask = r8a66597_read(r8a66597, BEMPSTS)
1508                & r8a66597_read(r8a66597, BEMPENB);
1509         r8a66597_write(r8a66597, ~mask, BEMPSTS);
1510         if (mask & BEMP0) {
1511                 cfifo_change(r8a66597, 0);
1512                 td = r8a66597_get_td(r8a66597, 0);
1513                 if (td && td->type != USB_PID_OUT)
1514                         disable_irq_empty(r8a66597, 0);
1515                 check_next_phase(r8a66597, 0);
1516         }
1517
1518         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1519                 check = 1 << pipenum;
1520                 if (mask &  check) {
1521                         struct r8a66597_td *td;
1522                         td = r8a66597_get_td(r8a66597, pipenum);
1523                         if (unlikely(!td))
1524                                 continue;
1525
1526                         tmp = r8a66597_read(r8a66597, td->pipe->pipectr);
1527                         if ((tmp & INBUFM) == 0) {
1528                                 disable_irq_empty(r8a66597, pipenum);
1529                                 pipe_irq_disable(r8a66597, pipenum);
1530                                 finish_request(r8a66597, td, pipenum, td->urb,
1531                                                 0);
1532                         }
1533                 }
1534         }
1535 }
1536
1537 static void irq_pipe_nrdy(struct r8a66597 *r8a66597)
1538 {
1539         u16 check;
1540         u16 pipenum;
1541         u16 mask;
1542         int status;
1543
1544         mask = r8a66597_read(r8a66597, NRDYSTS)
1545                & r8a66597_read(r8a66597, NRDYENB);
1546         r8a66597_write(r8a66597, ~mask, NRDYSTS);
1547         if (mask & NRDY0) {
1548                 cfifo_change(r8a66597, 0);
1549                 status = get_urb_error(r8a66597, 0);
1550                 pipe_irq_disable(r8a66597, 0);
1551                 check_next_phase(r8a66597, status);
1552         }
1553
1554         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1555                 check = 1 << pipenum;
1556                 if (mask & check) {
1557                         struct r8a66597_td *td;
1558                         td = r8a66597_get_td(r8a66597, pipenum);
1559                         if (unlikely(!td))
1560                                 continue;
1561
1562                         status = get_urb_error(r8a66597, pipenum);
1563                         pipe_irq_disable(r8a66597, pipenum);
1564                         pipe_stop(r8a66597, td->pipe);
1565                         finish_request(r8a66597, td, pipenum, td->urb, status);
1566                 }
1567         }
1568 }
1569
1570 static irqreturn_t r8a66597_irq(struct usb_hcd *hcd)
1571 {
1572         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1573         u16 intsts0, intsts1, intsts2;
1574         u16 intenb0, intenb1, intenb2;
1575         u16 mask0, mask1, mask2;
1576         int status;
1577
1578         spin_lock(&r8a66597->lock);
1579
1580         intsts0 = r8a66597_read(r8a66597, INTSTS0);
1581         intsts1 = r8a66597_read(r8a66597, INTSTS1);
1582         intsts2 = r8a66597_read(r8a66597, INTSTS2);
1583         intenb0 = r8a66597_read(r8a66597, INTENB0);
1584         intenb1 = r8a66597_read(r8a66597, INTENB1);
1585         intenb2 = r8a66597_read(r8a66597, INTENB2);
1586
1587         mask2 = intsts2 & intenb2;
1588         mask1 = intsts1 & intenb1;
1589         mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY);
1590         if (mask2) {
1591                 if (mask2 & ATTCH) {
1592                         r8a66597_write(r8a66597, ~ATTCH, INTSTS2);
1593                         r8a66597_bclr(r8a66597, ATTCHE, INTENB2);
1594
1595                         /* start usb bus sampling */
1596                         start_root_hub_sampling(r8a66597, 1, 1);
1597                 }
1598                 if (mask2 & DTCH) {
1599                         r8a66597_write(r8a66597, ~DTCH, INTSTS2);
1600                         r8a66597_bclr(r8a66597, DTCHE, INTENB2);
1601                         r8a66597_usb_disconnect(r8a66597, 1);
1602                 }
1603                 if (mask2 & BCHG) {
1604                         r8a66597_write(r8a66597, ~BCHG, INTSTS2);
1605                         r8a66597_bclr(r8a66597, BCHGE, INTENB2);
1606                         usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597));
1607                 }
1608         }
1609
1610         if (mask1) {
1611                 if (mask1 & ATTCH) {
1612                         r8a66597_write(r8a66597, ~ATTCH, INTSTS1);
1613                         r8a66597_bclr(r8a66597, ATTCHE, INTENB1);
1614
1615                         /* start usb bus sampling */
1616                         start_root_hub_sampling(r8a66597, 0, 1);
1617                 }
1618                 if (mask1 & DTCH) {
1619                         r8a66597_write(r8a66597, ~DTCH, INTSTS1);
1620                         r8a66597_bclr(r8a66597, DTCHE, INTENB1);
1621                         r8a66597_usb_disconnect(r8a66597, 0);
1622                 }
1623                 if (mask1 & BCHG) {
1624                         r8a66597_write(r8a66597, ~BCHG, INTSTS1);
1625                         r8a66597_bclr(r8a66597, BCHGE, INTENB1);
1626                         usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597));
1627                 }
1628
1629                 if (mask1 & SIGN) {
1630                         r8a66597_write(r8a66597, ~SIGN, INTSTS1);
1631                         status = get_urb_error(r8a66597, 0);
1632                         check_next_phase(r8a66597, status);
1633                 }
1634                 if (mask1 & SACK) {
1635                         r8a66597_write(r8a66597, ~SACK, INTSTS1);
1636                         check_next_phase(r8a66597, 0);
1637                 }
1638         }
1639         if (mask0) {
1640                 if (mask0 & BRDY)
1641                         irq_pipe_ready(r8a66597);
1642                 if (mask0 & BEMP)
1643                         irq_pipe_empty(r8a66597);
1644                 if (mask0 & NRDY)
1645                         irq_pipe_nrdy(r8a66597);
1646         }
1647
1648         spin_unlock(&r8a66597->lock);
1649         return IRQ_HANDLED;
1650 }
1651
1652 /* this function must be called with interrupt disabled */
1653 static void r8a66597_root_hub_control(struct r8a66597 *r8a66597, int port)
1654 {
1655         u16 tmp;
1656         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1657
1658         if (rh->port & (1 << USB_PORT_FEAT_RESET)) {
1659                 unsigned long dvstctr_reg = get_dvstctr_reg(port);
1660
1661                 tmp = r8a66597_read(r8a66597, dvstctr_reg);
1662                 if ((tmp & USBRST) == USBRST) {
1663                         r8a66597_mdfy(r8a66597, UACT, USBRST | UACT,
1664                                       dvstctr_reg);
1665                         r8a66597_root_hub_start_polling(r8a66597);
1666                 } else
1667                         r8a66597_usb_connect(r8a66597, port);
1668         }
1669
1670         if (!(rh->port & (1 << USB_PORT_FEAT_CONNECTION))) {
1671                 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port));
1672                 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
1673         }
1674
1675         if (rh->scount > 0) {
1676                 tmp = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
1677                 if (tmp == rh->old_syssts) {
1678                         rh->scount--;
1679                         if (rh->scount == 0)
1680                                 r8a66597_check_syssts(r8a66597, port, tmp);
1681                         else
1682                                 r8a66597_root_hub_start_polling(r8a66597);
1683                 } else {
1684                         rh->scount = R8A66597_MAX_SAMPLING;
1685                         rh->old_syssts = tmp;
1686                         r8a66597_root_hub_start_polling(r8a66597);
1687                 }
1688         }
1689 }
1690
1691 static void r8a66597_interval_timer(unsigned long _r8a66597)
1692 {
1693         struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1694         unsigned long flags;
1695         u16 pipenum;
1696         struct r8a66597_td *td;
1697
1698         spin_lock_irqsave(&r8a66597->lock, flags);
1699
1700         for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1701                 if (!(r8a66597->interval_map & (1 << pipenum)))
1702                         continue;
1703                 if (timer_pending(&r8a66597->interval_timer[pipenum]))
1704                         continue;
1705
1706                 td = r8a66597_get_td(r8a66597, pipenum);
1707                 if (td)
1708                         start_transfer(r8a66597, td);
1709         }
1710
1711         spin_unlock_irqrestore(&r8a66597->lock, flags);
1712 }
1713
1714 static void r8a66597_td_timer(unsigned long _r8a66597)
1715 {
1716         struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1717         unsigned long flags;
1718         u16 pipenum;
1719         struct r8a66597_td *td, *new_td = NULL;
1720         struct r8a66597_pipe *pipe;
1721
1722         spin_lock_irqsave(&r8a66597->lock, flags);
1723         for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1724                 if (!(r8a66597->timeout_map & (1 << pipenum)))
1725                         continue;
1726                 if (timer_pending(&r8a66597->td_timer[pipenum]))
1727                         continue;
1728
1729                 td = r8a66597_get_td(r8a66597, pipenum);
1730                 if (!td) {
1731                         r8a66597->timeout_map &= ~(1 << pipenum);
1732                         continue;
1733                 }
1734
1735                 if (td->urb->actual_length) {
1736                         set_td_timer(r8a66597, td);
1737                         break;
1738                 }
1739
1740                 pipe = td->pipe;
1741                 pipe_stop(r8a66597, pipe);
1742
1743                 new_td = td;
1744                 do {
1745                         list_move_tail(&new_td->queue,
1746                                        &r8a66597->pipe_queue[pipenum]);
1747                         new_td = r8a66597_get_td(r8a66597, pipenum);
1748                         if (!new_td) {
1749                                 new_td = td;
1750                                 break;
1751                         }
1752                 } while (td != new_td && td->address == new_td->address);
1753
1754                 start_transfer(r8a66597, new_td);
1755
1756                 if (td == new_td)
1757                         r8a66597->timeout_map &= ~(1 << pipenum);
1758                 else
1759                         set_td_timer(r8a66597, new_td);
1760                 break;
1761         }
1762         spin_unlock_irqrestore(&r8a66597->lock, flags);
1763 }
1764
1765 static void r8a66597_timer(unsigned long _r8a66597)
1766 {
1767         struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1768         unsigned long flags;
1769         int port;
1770
1771         spin_lock_irqsave(&r8a66597->lock, flags);
1772
1773         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
1774                 r8a66597_root_hub_control(r8a66597, port);
1775
1776         spin_unlock_irqrestore(&r8a66597->lock, flags);
1777 }
1778
1779 static int check_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
1780 {
1781         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
1782
1783         if (dev && dev->address && dev->state != USB_STATE_CONFIGURED &&
1784             (urb->dev->state == USB_STATE_CONFIGURED))
1785                 return 1;
1786         else
1787                 return 0;
1788 }
1789
1790 static int r8a66597_start(struct usb_hcd *hcd)
1791 {
1792         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1793
1794         hcd->state = HC_STATE_RUNNING;
1795         return enable_controller(r8a66597);
1796 }
1797
1798 static void r8a66597_stop(struct usb_hcd *hcd)
1799 {
1800         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1801
1802         disable_controller(r8a66597);
1803 }
1804
1805 static void set_address_zero(struct r8a66597 *r8a66597, struct urb *urb)
1806 {
1807         unsigned int usb_address = usb_pipedevice(urb->pipe);
1808         u16 root_port, hub_port;
1809
1810         if (usb_address == 0) {
1811                 get_port_number(urb->dev->devpath,
1812                                 &root_port, &hub_port);
1813                 set_devadd_reg(r8a66597, 0,
1814                                get_r8a66597_usb_speed(urb->dev->speed),
1815                                get_parent_r8a66597_address(r8a66597, urb->dev),
1816                                hub_port, root_port);
1817         }
1818 }
1819
1820 static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597,
1821                                             struct urb *urb,
1822                                             struct usb_host_endpoint *hep)
1823 {
1824         struct r8a66597_td *td;
1825         u16 pipenum;
1826
1827         td = kzalloc(sizeof(struct r8a66597_td), GFP_ATOMIC);
1828         if (td == NULL)
1829                 return NULL;
1830
1831         pipenum = r8a66597_get_pipenum(urb, hep);
1832         td->pipenum = pipenum;
1833         td->pipe = hep->hcpriv;
1834         td->urb = urb;
1835         td->address = get_urb_to_r8a66597_addr(r8a66597, urb);
1836         td->maxpacket = usb_maxpacket(urb->dev, urb->pipe,
1837                                       !usb_pipein(urb->pipe));
1838         if (usb_pipecontrol(urb->pipe))
1839                 td->type = USB_PID_SETUP;
1840         else if (usb_pipein(urb->pipe))
1841                 td->type = USB_PID_IN;
1842         else
1843                 td->type = USB_PID_OUT;
1844         INIT_LIST_HEAD(&td->queue);
1845
1846         return td;
1847 }
1848
1849 static int r8a66597_urb_enqueue(struct usb_hcd *hcd,
1850                                 struct urb *urb,
1851                                 gfp_t mem_flags)
1852 {
1853         struct usb_host_endpoint *hep = urb->ep;
1854         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1855         struct r8a66597_td *td = NULL;
1856         int ret, request = 0;
1857         unsigned long flags;
1858
1859         spin_lock_irqsave(&r8a66597->lock, flags);
1860         if (!get_urb_to_r8a66597_dev(r8a66597, urb)) {
1861                 ret = -ENODEV;
1862                 goto error_not_linked;
1863         }
1864
1865         ret = usb_hcd_link_urb_to_ep(hcd, urb);
1866         if (ret)
1867                 goto error_not_linked;
1868
1869         if (!hep->hcpriv) {
1870                 hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe),
1871                                 GFP_ATOMIC);
1872                 if (!hep->hcpriv) {
1873                         ret = -ENOMEM;
1874                         goto error;
1875                 }
1876                 set_pipe_reg_addr(hep->hcpriv, R8A66597_PIPE_NO_DMA);
1877                 if (usb_pipeendpoint(urb->pipe))
1878                         init_pipe_info(r8a66597, urb, hep, &hep->desc);
1879         }
1880
1881         if (unlikely(check_pipe_config(r8a66597, urb)))
1882                 init_pipe_config(r8a66597, urb);
1883
1884         set_address_zero(r8a66597, urb);
1885         td = r8a66597_make_td(r8a66597, urb, hep);
1886         if (td == NULL) {
1887                 ret = -ENOMEM;
1888                 goto error;
1889         }
1890         if (list_empty(&r8a66597->pipe_queue[td->pipenum]))
1891                 request = 1;
1892         list_add_tail(&td->queue, &r8a66597->pipe_queue[td->pipenum]);
1893         urb->hcpriv = td;
1894
1895         if (request) {
1896                 if (td->pipe->info.timer_interval) {
1897                         r8a66597->interval_map |= 1 << td->pipenum;
1898                         mod_timer(&r8a66597->interval_timer[td->pipenum],
1899                                   jiffies + msecs_to_jiffies(
1900                                         td->pipe->info.timer_interval));
1901                 } else {
1902                         ret = start_transfer(r8a66597, td);
1903                         if (ret < 0) {
1904                                 list_del(&td->queue);
1905                                 kfree(td);
1906                         }
1907                 }
1908         } else
1909                 set_td_timer(r8a66597, td);
1910
1911 error:
1912         if (ret)
1913                 usb_hcd_unlink_urb_from_ep(hcd, urb);
1914 error_not_linked:
1915         spin_unlock_irqrestore(&r8a66597->lock, flags);
1916         return ret;
1917 }
1918
1919 static int r8a66597_urb_dequeue(struct usb_hcd *hcd, struct urb *urb,
1920                 int status)
1921 {
1922         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1923         struct r8a66597_td *td;
1924         unsigned long flags;
1925         int rc;
1926
1927         spin_lock_irqsave(&r8a66597->lock, flags);
1928         rc = usb_hcd_check_unlink_urb(hcd, urb, status);
1929         if (rc)
1930                 goto done;
1931
1932         if (urb->hcpriv) {
1933                 td = urb->hcpriv;
1934                 pipe_stop(r8a66597, td->pipe);
1935                 pipe_irq_disable(r8a66597, td->pipenum);
1936                 disable_irq_empty(r8a66597, td->pipenum);
1937                 finish_request(r8a66597, td, td->pipenum, urb, status);
1938         }
1939  done:
1940         spin_unlock_irqrestore(&r8a66597->lock, flags);
1941         return rc;
1942 }
1943
1944 static void r8a66597_endpoint_disable(struct usb_hcd *hcd,
1945                                       struct usb_host_endpoint *hep)
1946 {
1947         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1948         struct r8a66597_pipe *pipe = (struct r8a66597_pipe *)hep->hcpriv;
1949         struct r8a66597_td *td;
1950         struct urb *urb = NULL;
1951         u16 pipenum;
1952         unsigned long flags;
1953
1954         if (pipe == NULL)
1955                 return;
1956         pipenum = pipe->info.pipenum;
1957
1958         if (pipenum == 0) {
1959                 kfree(hep->hcpriv);
1960                 hep->hcpriv = NULL;
1961                 return;
1962         }
1963
1964         spin_lock_irqsave(&r8a66597->lock, flags);
1965         pipe_stop(r8a66597, pipe);
1966         pipe_irq_disable(r8a66597, pipenum);
1967         disable_irq_empty(r8a66597, pipenum);
1968         td = r8a66597_get_td(r8a66597, pipenum);
1969         if (td)
1970                 urb = td->urb;
1971         finish_request(r8a66597, td, pipenum, urb, -ESHUTDOWN);
1972         kfree(hep->hcpriv);
1973         hep->hcpriv = NULL;
1974         spin_unlock_irqrestore(&r8a66597->lock, flags);
1975 }
1976
1977 static int r8a66597_get_frame(struct usb_hcd *hcd)
1978 {
1979         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1980         return r8a66597_read(r8a66597, FRMNUM) & 0x03FF;
1981 }
1982
1983 static void collect_usb_address_map(struct usb_device *udev, unsigned long *map)
1984 {
1985         int chix;
1986
1987         if (udev->state == USB_STATE_CONFIGURED &&
1988             udev->parent && udev->parent->devnum > 1 &&
1989             udev->parent->descriptor.bDeviceClass == USB_CLASS_HUB)
1990                 map[udev->devnum/32] |= (1 << (udev->devnum % 32));
1991
1992         for (chix = 0; chix < udev->maxchild; chix++) {
1993                 struct usb_device *childdev = udev->children[chix];
1994
1995                 if (childdev)
1996                         collect_usb_address_map(childdev, map);
1997         }
1998 }
1999
2000 /* this function must be called with interrupt disabled */
2001 static struct r8a66597_device *get_r8a66597_device(struct r8a66597 *r8a66597,
2002                                                    int addr)
2003 {
2004         struct r8a66597_device *dev;
2005         struct list_head *list = &r8a66597->child_device;
2006
2007         list_for_each_entry(dev, list, device_list) {
2008                 if (!dev)
2009                         continue;
2010                 if (dev->usb_address != addr)
2011                         continue;
2012
2013                 return dev;
2014         }
2015
2016         printk(KERN_ERR "r8a66597: get_r8a66597_device fail.(%d)\n", addr);
2017         return NULL;
2018 }
2019
2020 static void update_usb_address_map(struct r8a66597 *r8a66597,
2021                                    struct usb_device *root_hub,
2022                                    unsigned long *map)
2023 {
2024         int i, j, addr;
2025         unsigned long diff;
2026         unsigned long flags;
2027
2028         for (i = 0; i < 4; i++) {
2029                 diff = r8a66597->child_connect_map[i] ^ map[i];
2030                 if (!diff)
2031                         continue;
2032
2033                 for (j = 0; j < 32; j++) {
2034                         if (!(diff & (1 << j)))
2035                                 continue;
2036
2037                         addr = i * 32 + j;
2038                         if (map[i] & (1 << j))
2039                                 set_child_connect_map(r8a66597, addr);
2040                         else {
2041                                 struct r8a66597_device *dev;
2042
2043                                 spin_lock_irqsave(&r8a66597->lock, flags);
2044                                 dev = get_r8a66597_device(r8a66597, addr);
2045                                 disable_r8a66597_pipe_all(r8a66597, dev);
2046                                 free_usb_address(r8a66597, dev);
2047                                 put_child_connect_map(r8a66597, addr);
2048                                 spin_unlock_irqrestore(&r8a66597->lock, flags);
2049                         }
2050                 }
2051         }
2052 }
2053
2054 static void r8a66597_check_detect_child(struct r8a66597 *r8a66597,
2055                                         struct usb_hcd *hcd)
2056 {
2057         struct usb_bus *bus;
2058         unsigned long now_map[4];
2059
2060         memset(now_map, 0, sizeof(now_map));
2061
2062         list_for_each_entry(bus, &usb_bus_list, bus_list) {
2063                 if (!bus->root_hub)
2064                         continue;
2065
2066                 if (bus->busnum != hcd->self.busnum)
2067                         continue;
2068
2069                 collect_usb_address_map(bus->root_hub, now_map);
2070                 update_usb_address_map(r8a66597, bus->root_hub, now_map);
2071         }
2072 }
2073
2074 static int r8a66597_hub_status_data(struct usb_hcd *hcd, char *buf)
2075 {
2076         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2077         unsigned long flags;
2078         int i;
2079
2080         r8a66597_check_detect_child(r8a66597, hcd);
2081
2082         spin_lock_irqsave(&r8a66597->lock, flags);
2083
2084         *buf = 0;       /* initialize (no change) */
2085
2086         for (i = 0; i < R8A66597_MAX_ROOT_HUB; i++) {
2087                 if (r8a66597->root_hub[i].port & 0xffff0000)
2088                         *buf |= 1 << (i + 1);
2089         }
2090
2091         spin_unlock_irqrestore(&r8a66597->lock, flags);
2092
2093         return (*buf != 0);
2094 }
2095
2096 static void r8a66597_hub_descriptor(struct r8a66597 *r8a66597,
2097                                     struct usb_hub_descriptor *desc)
2098 {
2099         desc->bDescriptorType = 0x29;
2100         desc->bHubContrCurrent = 0;
2101         desc->bNbrPorts = R8A66597_MAX_ROOT_HUB;
2102         desc->bDescLength = 9;
2103         desc->bPwrOn2PwrGood = 0;
2104         desc->wHubCharacteristics = cpu_to_le16(0x0011);
2105         desc->bitmap[0] = ((1 << R8A66597_MAX_ROOT_HUB) - 1) << 1;
2106         desc->bitmap[1] = ~0;
2107 }
2108
2109 static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
2110                                 u16 wIndex, char *buf, u16 wLength)
2111 {
2112         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2113         int ret;
2114         int port = (wIndex & 0x00FF) - 1;
2115         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
2116         unsigned long flags;
2117
2118         ret = 0;
2119
2120         spin_lock_irqsave(&r8a66597->lock, flags);
2121         switch (typeReq) {
2122         case ClearHubFeature:
2123         case SetHubFeature:
2124                 switch (wValue) {
2125                 case C_HUB_OVER_CURRENT:
2126                 case C_HUB_LOCAL_POWER:
2127                         break;
2128                 default:
2129                         goto error;
2130                 }
2131                 break;
2132         case ClearPortFeature:
2133                 if (wIndex > R8A66597_MAX_ROOT_HUB)
2134                         goto error;
2135                 if (wLength != 0)
2136                         goto error;
2137
2138                 switch (wValue) {
2139                 case USB_PORT_FEAT_ENABLE:
2140                         rh->port &= ~(1 << USB_PORT_FEAT_POWER);
2141                         break;
2142                 case USB_PORT_FEAT_SUSPEND:
2143                         break;
2144                 case USB_PORT_FEAT_POWER:
2145                         r8a66597_port_power(r8a66597, port, 0);
2146                         break;
2147                 case USB_PORT_FEAT_C_ENABLE:
2148                 case USB_PORT_FEAT_C_SUSPEND:
2149                 case USB_PORT_FEAT_C_CONNECTION:
2150                 case USB_PORT_FEAT_C_OVER_CURRENT:
2151                 case USB_PORT_FEAT_C_RESET:
2152                         break;
2153                 default:
2154                         goto error;
2155                 }
2156                 rh->port &= ~(1 << wValue);
2157                 break;
2158         case GetHubDescriptor:
2159                 r8a66597_hub_descriptor(r8a66597,
2160                                         (struct usb_hub_descriptor *)buf);
2161                 break;
2162         case GetHubStatus:
2163                 *buf = 0x00;
2164                 break;
2165         case GetPortStatus:
2166                 if (wIndex > R8A66597_MAX_ROOT_HUB)
2167                         goto error;
2168                 *(__le32 *)buf = cpu_to_le32(rh->port);
2169                 break;
2170         case SetPortFeature:
2171                 if (wIndex > R8A66597_MAX_ROOT_HUB)
2172                         goto error;
2173                 if (wLength != 0)
2174                         goto error;
2175
2176                 switch (wValue) {
2177                 case USB_PORT_FEAT_SUSPEND:
2178                         break;
2179                 case USB_PORT_FEAT_POWER:
2180                         r8a66597_port_power(r8a66597, port, 1);
2181                         rh->port |= (1 << USB_PORT_FEAT_POWER);
2182                         break;
2183                 case USB_PORT_FEAT_RESET: {
2184                         struct r8a66597_device *dev = rh->dev;
2185
2186                         rh->port |= (1 << USB_PORT_FEAT_RESET);
2187
2188                         disable_r8a66597_pipe_all(r8a66597, dev);
2189                         free_usb_address(r8a66597, dev);
2190
2191                         r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT,
2192                                       get_dvstctr_reg(port));
2193                         mod_timer(&r8a66597->rh_timer,
2194                                   jiffies + msecs_to_jiffies(50));
2195                         }
2196                         break;
2197                 default:
2198                         goto error;
2199                 }
2200                 rh->port |= 1 << wValue;
2201                 break;
2202         default:
2203 error:
2204                 ret = -EPIPE;
2205                 break;
2206         }
2207
2208         spin_unlock_irqrestore(&r8a66597->lock, flags);
2209         return ret;
2210 }
2211
2212 #if defined(CONFIG_PM)
2213 static int r8a66597_bus_suspend(struct usb_hcd *hcd)
2214 {
2215         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2216         int port;
2217
2218         dbg("%s", __func__);
2219
2220         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++) {
2221                 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
2222                 unsigned long dvstctr_reg = get_dvstctr_reg(port);
2223
2224                 if (!(rh->port & (1 << USB_PORT_FEAT_ENABLE)))
2225                         continue;
2226
2227                 dbg("suspend port = %d", port);
2228                 r8a66597_bclr(r8a66597, UACT, dvstctr_reg);     /* suspend */
2229                 rh->port |= 1 << USB_PORT_FEAT_SUSPEND;
2230
2231                 if (rh->dev->udev->do_remote_wakeup) {
2232                         msleep(3);      /* waiting last SOF */
2233                         r8a66597_bset(r8a66597, RWUPE, dvstctr_reg);
2234                         r8a66597_write(r8a66597, ~BCHG, get_intsts_reg(port));
2235                         r8a66597_bset(r8a66597, BCHGE, get_intenb_reg(port));
2236                 }
2237         }
2238
2239         r8a66597->bus_suspended = 1;
2240
2241         return 0;
2242 }
2243
2244 static int r8a66597_bus_resume(struct usb_hcd *hcd)
2245 {
2246         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2247         int port;
2248
2249         dbg("%s", __func__);
2250
2251         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++) {
2252                 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
2253                 unsigned long dvstctr_reg = get_dvstctr_reg(port);
2254
2255                 if (!(rh->port & (1 << USB_PORT_FEAT_SUSPEND)))
2256                         continue;
2257
2258                 dbg("resume port = %d", port);
2259                 rh->port &= ~(1 << USB_PORT_FEAT_SUSPEND);
2260                 rh->port |= 1 << USB_PORT_FEAT_C_SUSPEND;
2261                 r8a66597_mdfy(r8a66597, RESUME, RESUME | UACT, dvstctr_reg);
2262                 msleep(50);
2263                 r8a66597_mdfy(r8a66597, UACT, RESUME | UACT, dvstctr_reg);
2264         }
2265
2266         return 0;
2267
2268 }
2269 #else
2270 #define r8a66597_bus_suspend    NULL
2271 #define r8a66597_bus_resume     NULL
2272 #endif
2273
2274 static struct hc_driver r8a66597_hc_driver = {
2275         .description =          hcd_name,
2276         .hcd_priv_size =        sizeof(struct r8a66597),
2277         .irq =                  r8a66597_irq,
2278
2279         /*
2280          * generic hardware linkage
2281          */
2282         .flags =                HCD_USB2,
2283
2284         .start =                r8a66597_start,
2285         .stop =                 r8a66597_stop,
2286
2287         /*
2288          * managing i/o requests and associated device resources
2289          */
2290         .urb_enqueue =          r8a66597_urb_enqueue,
2291         .urb_dequeue =          r8a66597_urb_dequeue,
2292         .endpoint_disable =     r8a66597_endpoint_disable,
2293
2294         /*
2295          * periodic schedule support
2296          */
2297         .get_frame_number =     r8a66597_get_frame,
2298
2299         /*
2300          * root hub support
2301          */
2302         .hub_status_data =      r8a66597_hub_status_data,
2303         .hub_control =          r8a66597_hub_control,
2304         .bus_suspend =          r8a66597_bus_suspend,
2305         .bus_resume =           r8a66597_bus_resume,
2306 };
2307
2308 #if defined(CONFIG_PM)
2309 static int r8a66597_suspend(struct platform_device *pdev, pm_message_t state)
2310 {
2311         struct r8a66597         *r8a66597 = dev_get_drvdata(&pdev->dev);
2312         int port;
2313
2314         dbg("%s", __func__);
2315
2316         disable_controller(r8a66597);
2317
2318         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++) {
2319                 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
2320
2321                 rh->port = 0x00000000;
2322         }
2323
2324         return 0;
2325 }
2326
2327 static int r8a66597_resume(struct platform_device *pdev)
2328 {
2329         struct r8a66597         *r8a66597 = dev_get_drvdata(&pdev->dev);
2330         struct usb_hcd          *hcd = r8a66597_to_hcd(r8a66597);
2331
2332         dbg("%s", __func__);
2333
2334         enable_controller(r8a66597);
2335         usb_root_hub_lost_power(hcd->self.root_hub);
2336
2337         return 0;
2338 }
2339 #else   /* if defined(CONFIG_PM) */
2340 #define r8a66597_suspend        NULL
2341 #define r8a66597_resume         NULL
2342 #endif
2343
2344 static int __init_or_module r8a66597_remove(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         del_timer_sync(&r8a66597->rh_timer);
2350         usb_remove_hcd(hcd);
2351         iounmap((void *)r8a66597->reg);
2352 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) && defined(CONFIG_HAVE_CLK)
2353         clk_put(r8a66597->clk);
2354 #endif
2355         usb_put_hcd(hcd);
2356         return 0;
2357 }
2358
2359 static int __devinit r8a66597_probe(struct platform_device *pdev)
2360 {
2361 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) && defined(CONFIG_HAVE_CLK)
2362         char clk_name[8];
2363 #endif
2364         struct resource *res = NULL, *ires;
2365         int irq = -1;
2366         void __iomem *reg = NULL;
2367         struct usb_hcd *hcd = NULL;
2368         struct r8a66597 *r8a66597;
2369         int ret = 0;
2370         int i;
2371         unsigned long irq_trigger;
2372
2373         if (pdev->dev.dma_mask) {
2374                 ret = -EINVAL;
2375                 dev_err(&pdev->dev, "dma not supported\n");
2376                 goto clean_up;
2377         }
2378
2379         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2380         if (!res) {
2381                 ret = -ENODEV;
2382                 dev_err(&pdev->dev, "platform_get_resource error.\n");
2383                 goto clean_up;
2384         }
2385
2386         ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
2387         if (!ires) {
2388                 ret = -ENODEV;
2389                 dev_err(&pdev->dev,
2390                         "platform_get_resource IORESOURCE_IRQ error.\n");
2391                 goto clean_up;
2392         }
2393
2394         irq = ires->start;
2395         irq_trigger = ires->flags & IRQF_TRIGGER_MASK;
2396
2397         reg = ioremap(res->start, resource_size(res));
2398         if (reg == NULL) {
2399                 ret = -ENOMEM;
2400                 dev_err(&pdev->dev, "ioremap error.\n");
2401                 goto clean_up;
2402         }
2403
2404         if (pdev->dev.platform_data == NULL) {
2405                 dev_err(&pdev->dev, "no platform data\n");
2406                 ret = -ENODEV;
2407                 goto clean_up;
2408         }
2409
2410         /* initialize hcd */
2411         hcd = usb_create_hcd(&r8a66597_hc_driver, &pdev->dev, (char *)hcd_name);
2412         if (!hcd) {
2413                 ret = -ENOMEM;
2414                 dev_err(&pdev->dev, "Failed to create hcd\n");
2415                 goto clean_up;
2416         }
2417         r8a66597 = hcd_to_r8a66597(hcd);
2418         memset(r8a66597, 0, sizeof(struct r8a66597));
2419         dev_set_drvdata(&pdev->dev, r8a66597);
2420         r8a66597->pdata = pdev->dev.platform_data;
2421         r8a66597->irq_sense_low = irq_trigger == IRQF_TRIGGER_LOW;
2422
2423 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) && defined(CONFIG_HAVE_CLK)
2424         snprintf(clk_name, sizeof(clk_name), "usb%d", pdev->id);
2425         r8a66597->clk = clk_get(&pdev->dev, clk_name);
2426         if (IS_ERR(r8a66597->clk)) {
2427                 dev_err(&pdev->dev, "cannot get clock \"%s\"\n", clk_name);
2428                 ret = PTR_ERR(r8a66597->clk);
2429                 goto clean_up2;
2430         }
2431 #endif
2432
2433         spin_lock_init(&r8a66597->lock);
2434         init_timer(&r8a66597->rh_timer);
2435         r8a66597->rh_timer.function = r8a66597_timer;
2436         r8a66597->rh_timer.data = (unsigned long)r8a66597;
2437         r8a66597->reg = (unsigned long)reg;
2438
2439         for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) {
2440                 INIT_LIST_HEAD(&r8a66597->pipe_queue[i]);
2441                 init_timer(&r8a66597->td_timer[i]);
2442                 r8a66597->td_timer[i].function = r8a66597_td_timer;
2443                 r8a66597->td_timer[i].data = (unsigned long)r8a66597;
2444                 setup_timer(&r8a66597->interval_timer[i],
2445                                 r8a66597_interval_timer,
2446                                 (unsigned long)r8a66597);
2447         }
2448         INIT_LIST_HEAD(&r8a66597->child_device);
2449
2450         hcd->rsrc_start = res->start;
2451
2452         ret = usb_add_hcd(hcd, irq, IRQF_DISABLED | irq_trigger);
2453         if (ret != 0) {
2454                 dev_err(&pdev->dev, "Failed to add hcd\n");
2455                 goto clean_up3;
2456         }
2457
2458         return 0;
2459
2460 clean_up3:
2461 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) && defined(CONFIG_HAVE_CLK)
2462         clk_put(r8a66597->clk);
2463 clean_up2:
2464 #endif
2465         usb_put_hcd(hcd);
2466
2467 clean_up:
2468         if (reg)
2469                 iounmap(reg);
2470
2471         return ret;
2472 }
2473
2474 static struct platform_driver r8a66597_driver = {
2475         .probe =        r8a66597_probe,
2476         .remove =       r8a66597_remove,
2477         .suspend =      r8a66597_suspend,
2478         .resume =       r8a66597_resume,
2479         .driver         = {
2480                 .name = (char *) hcd_name,
2481                 .owner  = THIS_MODULE,
2482         },
2483 };
2484
2485 static int __init r8a66597_init(void)
2486 {
2487         if (usb_disabled())
2488                 return -ENODEV;
2489
2490         printk(KERN_INFO KBUILD_MODNAME ": driver %s, %s\n", hcd_name,
2491                DRIVER_VERSION);
2492         return platform_driver_register(&r8a66597_driver);
2493 }
2494 module_init(r8a66597_init);
2495
2496 static void __exit r8a66597_cleanup(void)
2497 {
2498         platform_driver_unregister(&r8a66597_driver);
2499 }
2500 module_exit(r8a66597_cleanup);
2501