drivers/usb/host/r8a66597-hcd.c

   1 /*
   2  * R8A66597 HCD (Host Controller Driver)
   3  *
   4  * Copyright (C) 2006-2007 Renesas Solutions Corp.
   5  * Portions Copyright (C) 2004 Psion Teklogix (for NetBook PRO)
   6  * Portions Copyright (C) 2004-2005 David Brownell
   7  * Portions Copyright (C) 1999 Roman Weissgaerber
   8  *
   9  * Author : Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; version 2 of the License.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  23  *
  24  */
  25
  26 #include <linux/module.h>
  27 #include <linux/kernel.h>
  28 #include <linux/sched.h>
  29 #include <linux/errno.h>
  30 #include <linux/init.h>
  31 #include <linux/timer.h>
  32 #include <linux/delay.h>
  33 #include <linux/list.h>
  34 #include <linux/interrupt.h>
  35 #include <linux/usb.h>
  36 #include <linux/platform_device.h>
  37 #include <linux/io.h>
  38 #include <linux/irq.h>
  39
  40 #include "../core/hcd.h"
  41 #include "r8a66597.h"
  42
  43 MODULE_DESCRIPTION("R8A66597 USB Host Controller Driver");
  44 MODULE_LICENSE("GPL");
  45 MODULE_AUTHOR("Yoshihiro Shimoda");
  46 MODULE_ALIAS("platform:r8a66597_hcd");
  47
  48 #define DRIVER_VERSION  "2009-05-26"
  49
  50 static const char hcd_name[] = "r8a66597_hcd";
  51
  52 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum);
  53 static int r8a66597_get_frame(struct usb_hcd *hcd);
  54
  55 /* this function must be called with interrupt disabled */
  56 static void enable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
  57                             unsigned long reg)
  58 {
  59         u16 tmp;
  60
  61         tmp = r8a66597_read(r8a66597, INTENB0);
  62         r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
  63         r8a66597_bset(r8a66597, 1 << pipenum, reg);
  64         r8a66597_write(r8a66597, tmp, INTENB0);
  65 }
  66
  67 /* this function must be called with interrupt disabled */
  68 static void disable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
  69                              unsigned long reg)
  70 {
  71         u16 tmp;
  72
  73         tmp = r8a66597_read(r8a66597, INTENB0);
  74         r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
  75         r8a66597_bclr(r8a66597, 1 << pipenum, reg);
  76         r8a66597_write(r8a66597, tmp, INTENB0);
  77 }
  78
  79 static void set_devadd_reg(struct r8a66597 *r8a66597, u8 r8a66597_address,
  80                            u16 usbspd, u8 upphub, u8 hubport, int port)
  81 {
  82         u16 val;
  83         unsigned long devadd_reg = get_devadd_addr(r8a66597_address);
  84
  85         val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001);
  86         r8a66597_write(r8a66597, val, devadd_reg);
  87 }
  88
  89 static int r8a66597_clock_enable(struct r8a66597 *r8a66597)
  90 {
  91         u16 tmp;
  92         int i = 0;
  93
  94 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
  95 #if defined(CONFIG_HAVE_CLK)
  96         clk_enable(r8a66597->clk);
  97 #endif
  98         do {
  99                 r8a66597_write(r8a66597, SCKE, SYSCFG0);
 100                 tmp = r8a66597_read(r8a66597, SYSCFG0);
 101                 if (i++ > 1000) {
 102                         printk(KERN_ERR "r8a66597: register access fail.\n");
 103                         return -ENXIO;
 104                 }
 105         } while ((tmp & SCKE) != SCKE);
 106         r8a66597_write(r8a66597, 0x04, 0x02);
 107 #else
 108         do {
 109                 r8a66597_write(r8a66597, USBE, SYSCFG0);
 110                 tmp = r8a66597_read(r8a66597, SYSCFG0);
 111                 if (i++ > 1000) {
 112                         printk(KERN_ERR "r8a66597: register access fail.\n");
 113                         return -ENXIO;
 114                 }
 115         } while ((tmp & USBE) != USBE);
 116         r8a66597_bclr(r8a66597, USBE, SYSCFG0);
 117         r8a66597_mdfy(r8a66597, get_xtal_from_pdata(r8a66597->pdata), XTAL,
 118                         SYSCFG0);
 119
 120         i = 0;
 121         r8a66597_bset(r8a66597, XCKE, SYSCFG0);
 122         do {
 123                 msleep(1);
 124                 tmp = r8a66597_read(r8a66597, SYSCFG0);
 125                 if (i++ > 500) {
 126                         printk(KERN_ERR "r8a66597: register access fail.\n");
 127                         return -ENXIO;
 128                 }
 129         } while ((tmp & SCKE) != SCKE);
 130 #endif  /* #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) */
 131
 132         return 0;
 133 }
 134
 135 static void r8a66597_clock_disable(struct r8a66597 *r8a66597)
 136 {
 137         r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
 138         udelay(1);
 139 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
 140 #if defined(CONFIG_HAVE_CLK)
 141         clk_disable(r8a66597->clk);
 142 #endif
 143 #else
 144         r8a66597_bclr(r8a66597, PLLC, SYSCFG0);
 145         r8a66597_bclr(r8a66597, XCKE, SYSCFG0);
 146         r8a66597_bclr(r8a66597, USBE, SYSCFG0);
 147 #endif
 148 }
 149
 150 static void r8a66597_enable_port(struct r8a66597 *r8a66597, int port)
 151 {
 152         u16 val;
 153
 154         val = port ? DRPD : DCFM | DRPD;
 155         r8a66597_bset(r8a66597, val, get_syscfg_reg(port));
 156         r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port));
 157
 158         r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, get_dmacfg_reg(port));
 159         r8a66597_bclr(r8a66597, DTCHE, get_intenb_reg(port));
 160         r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
 161 }
 162
 163 static void r8a66597_disable_port(struct r8a66597 *r8a66597, int port)
 164 {
 165         u16 val, tmp;
 166
 167         r8a66597_write(r8a66597, 0, get_intenb_reg(port));
 168         r8a66597_write(r8a66597, 0, get_intsts_reg(port));
 169
 170         r8a66597_port_power(r8a66597, port, 0);
 171
 172         do {
 173                 tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS;
 174                 udelay(640);
 175         } while (tmp == EDGESTS);
 176
 177         val = port ? DRPD : DCFM | DRPD;
 178         r8a66597_bclr(r8a66597, val, get_syscfg_reg(port));
 179         r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port));
 180 }
 181
 182 static int enable_controller(struct r8a66597 *r8a66597)
 183 {
 184         int ret, port;
 185         u16 vif = r8a66597->pdata->vif ? LDRV : 0;
 186         u16 irq_sense = r8a66597->irq_sense_low ? INTL : 0;
 187         u16 endian = r8a66597->pdata->endian ? BIGEND : 0;
 188
 189         ret = r8a66597_clock_enable(r8a66597);
 190         if (ret < 0)
 191                 return ret;
 192
 193         r8a66597_bset(r8a66597, vif & LDRV, PINCFG);
 194         r8a66597_bset(r8a66597, USBE, SYSCFG0);
 195
 196         r8a66597_bset(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
 197         r8a66597_bset(r8a66597, irq_sense & INTL, SOFCFG);
 198         r8a66597_bset(r8a66597, BRDY0, BRDYENB);
 199         r8a66597_bset(r8a66597, BEMP0, BEMPENB);
 200
 201         r8a66597_bset(r8a66597, endian & BIGEND, CFIFOSEL);
 202         r8a66597_bset(r8a66597, endian & BIGEND, D0FIFOSEL);
 203         r8a66597_bset(r8a66597, endian & BIGEND, D1FIFOSEL);
 204         r8a66597_bset(r8a66597, TRNENSEL, SOFCFG);
 205
 206         r8a66597_bset(r8a66597, SIGNE | SACKE, INTENB1);
 207
 208         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
 209                 r8a66597_enable_port(r8a66597, port);
 210
 211         return 0;
 212 }
 213
 214 static void disable_controller(struct r8a66597 *r8a66597)
 215 {
 216         int port;
 217
 218         r8a66597_write(r8a66597, 0, INTENB0);
 219         r8a66597_write(r8a66597, 0, INTSTS0);
 220
 221         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
 222                 r8a66597_disable_port(r8a66597, port);
 223
 224         r8a66597_clock_disable(r8a66597);
 225 }
 226
 227 static int get_parent_r8a66597_address(struct r8a66597 *r8a66597,
 228                                        struct usb_device *udev)
 229 {
 230         struct r8a66597_device *dev;
 231
 232         if (udev->parent && udev->parent->devnum != 1)
 233                 udev = udev->parent;
 234
 235         dev = dev_get_drvdata(&udev->dev);
 236         if (dev)
 237                 return dev->address;
 238         else
 239                 return 0;
 240 }
 241
 242 static int is_child_device(char *devpath)
 243 {
 244         return (devpath[2] ? 1 : 0);
 245 }
 246
 247 static int is_hub_limit(char *devpath)
 248 {
 249         return ((strlen(devpath) >= 4) ? 1 : 0);
 250 }
 251
 252 static void get_port_number(char *devpath, u16 *root_port, u16 *hub_port)
 253 {
 254         if (root_port) {
 255                 *root_port = (devpath[0] & 0x0F) - 1;
 256                 if (*root_port >= R8A66597_MAX_ROOT_HUB)
 257                         printk(KERN_ERR "r8a66597: Illegal root port number.\n");
 258         }
 259         if (hub_port)
 260                 *hub_port = devpath[2] & 0x0F;
 261 }
 262
 263 static u16 get_r8a66597_usb_speed(enum usb_device_speed speed)
 264 {
 265         u16 usbspd = 0;
 266
 267         switch (speed) {
 268         case USB_SPEED_LOW:
 269                 usbspd = LSMODE;
 270                 break;
 271         case USB_SPEED_FULL:
 272                 usbspd = FSMODE;
 273                 break;
 274         case USB_SPEED_HIGH:
 275                 usbspd = HSMODE;
 276                 break;
 277         default:
 278                 printk(KERN_ERR "r8a66597: unknown speed\n");
 279                 break;
 280         }
 281
 282         return usbspd;
 283 }
 284
 285 static void set_child_connect_map(struct r8a66597 *r8a66597, int address)
 286 {
 287         int idx;
 288
 289         idx = address / 32;
 290         r8a66597->child_connect_map[idx] |= 1 << (address % 32);
 291 }
 292
 293 static void put_child_connect_map(struct r8a66597 *r8a66597, int address)
 294 {
 295         int idx;
 296
 297         idx = address / 32;
 298         r8a66597->child_connect_map[idx] &= ~(1 << (address % 32));
 299 }
 300
 301 static void set_pipe_reg_addr(struct r8a66597_pipe *pipe, u8 dma_ch)
 302 {
 303         u16 pipenum = pipe->info.pipenum;
 304         const unsigned long fifoaddr[] = {D0FIFO, D1FIFO, CFIFO};
 305         const unsigned long fifosel[] = {D0FIFOSEL, D1FIFOSEL, CFIFOSEL};
 306         const unsigned long fifoctr[] = {D0FIFOCTR, D1FIFOCTR, CFIFOCTR};
 307
 308         if (dma_ch > R8A66597_PIPE_NO_DMA)      /* dma fifo not use? */
 309                 dma_ch = R8A66597_PIPE_NO_DMA;
 310
 311         pipe->fifoaddr = fifoaddr[dma_ch];
 312         pipe->fifosel = fifosel[dma_ch];
 313         pipe->fifoctr = fifoctr[dma_ch];
 314
 315         if (pipenum == 0)
 316                 pipe->pipectr = DCPCTR;
 317         else
 318                 pipe->pipectr = get_pipectr_addr(pipenum);
 319
 320         if (check_bulk_or_isoc(pipenum)) {
 321                 pipe->pipetre = get_pipetre_addr(pipenum);
 322                 pipe->pipetrn = get_pipetrn_addr(pipenum);
 323         } else {
 324                 pipe->pipetre = 0;
 325                 pipe->pipetrn = 0;
 326         }
 327 }
 328
 329 static struct r8a66597_device *
 330 get_urb_to_r8a66597_dev(struct r8a66597 *r8a66597, struct urb *urb)
 331 {
 332         if (usb_pipedevice(urb->pipe) == 0)
 333                 return &r8a66597->device0;
 334
 335         return dev_get_drvdata(&urb->dev->dev);
 336 }
 337
 338 static int make_r8a66597_device(struct r8a66597 *r8a66597,
 339                                 struct urb *urb, u8 addr)
 340 {
 341         struct r8a66597_device *dev;
 342         int usb_address = urb->setup_packet[2]; /* urb->pipe is address 0 */
 343
 344         dev = kzalloc(sizeof(struct r8a66597_device), GFP_ATOMIC);
 345         if (dev == NULL)
 346                 return -ENOMEM;
 347
 348         dev_set_drvdata(&urb->dev->dev, dev);
 349         dev->udev = urb->dev;
 350         dev->address = addr;
 351         dev->usb_address = usb_address;
 352         dev->state = USB_STATE_ADDRESS;
 353         dev->ep_in_toggle = 0;
 354         dev->ep_out_toggle = 0;
 355         INIT_LIST_HEAD(&dev->device_list);
 356         list_add_tail(&dev->device_list, &r8a66597->child_device);
 357
 358         get_port_number(urb->dev->devpath, &dev->root_port, &dev->hub_port);
 359         if (!is_child_device(urb->dev->devpath))
 360                 r8a66597->root_hub[dev->root_port].dev = dev;
 361
 362         set_devadd_reg(r8a66597, dev->address,
 363                        get_r8a66597_usb_speed(urb->dev->speed),
 364                        get_parent_r8a66597_address(r8a66597, urb->dev),
 365                        dev->hub_port, dev->root_port);
 366
 367         return 0;
 368 }
 369
 370 /* this function must be called with interrupt disabled */
 371 static u8 alloc_usb_address(struct r8a66597 *r8a66597, struct urb *urb)
 372 {
 373         u8 addr;        /* R8A66597's address */
 374         struct r8a66597_device *dev;
 375
 376         if (is_hub_limit(urb->dev->devpath)) {
 377                 dev_err(&urb->dev->dev, "External hub limit reached.\n");
 378                 return 0;
 379         }
 380
 381         dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 382         if (dev && dev->state >= USB_STATE_ADDRESS)
 383                 return dev->address;
 384
 385         for (addr = 1; addr <= R8A66597_MAX_DEVICE; addr++) {
 386                 if (r8a66597->address_map & (1 << addr))
 387                         continue;
 388
 389                 dbg("alloc_address: r8a66597_addr=%d", addr);
 390                 r8a66597->address_map |= 1 << addr;
 391
 392                 if (make_r8a66597_device(r8a66597, urb, addr) < 0)
 393                         return 0;
 394
 395                 return addr;
 396         }
 397
 398         dev_err(&urb->dev->dev,
 399                 "cannot communicate with a USB device more than 10.(%x)\n",
 400                 r8a66597->address_map);
 401
 402         return 0;
 403 }
 404
 405 /* this function must be called with interrupt disabled */
 406 static void free_usb_address(struct r8a66597 *r8a66597,
 407                              struct r8a66597_device *dev)
 408 {
 409         int port;
 410
 411         if (!dev)
 412                 return;
 413
 414         dbg("free_addr: addr=%d", dev->address);
 415
 416         dev->state = USB_STATE_DEFAULT;
 417         r8a66597->address_map &= ~(1 << dev->address);
 418         dev->address = 0;
 419         dev_set_drvdata(&dev->udev->dev, NULL);
 420         list_del(&dev->device_list);
 421         kfree(dev);
 422
 423         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++) {
 424                 if (r8a66597->root_hub[port].dev == dev) {
 425                         r8a66597->root_hub[port].dev = NULL;
 426                         break;
 427                 }
 428         }
 429 }
 430
 431 static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg,
 432                               u16 mask, u16 loop)
 433 {
 434         u16 tmp;
 435         int i = 0;
 436
 437         do {
 438                 tmp = r8a66597_read(r8a66597, reg);
 439                 if (i++ > 1000000) {
 440                         printk(KERN_ERR "r8a66597: register%lx, loop %x "
 441                                "is timeout\n", reg, loop);
 442                         break;
 443                 }
 444                 ndelay(1);
 445         } while ((tmp & mask) != loop);
 446 }
 447
 448 /* this function must be called with interrupt disabled */
 449 static void pipe_start(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
 450 {
 451         u16 tmp;
 452
 453         tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
 454         if ((pipe->info.pipenum != 0) & ((tmp & PID_STALL) != 0)) /* stall? */
 455                 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
 456         r8a66597_mdfy(r8a66597, PID_BUF, PID, pipe->pipectr);
 457 }
 458
 459 /* this function must be called with interrupt disabled */
 460 static void pipe_stop(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
 461 {
 462         u16 tmp;
 463
 464         tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
 465         if ((tmp & PID_STALL11) != PID_STALL11) /* force stall? */
 466                 r8a66597_mdfy(r8a66597, PID_STALL, PID, pipe->pipectr);
 467         r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
 468         r8a66597_reg_wait(r8a66597, pipe->pipectr, PBUSY, 0);
 469 }
 470
 471 /* this function must be called with interrupt disabled */
 472 static void clear_all_buffer(struct r8a66597 *r8a66597,
 473                              struct r8a66597_pipe *pipe)
 474 {
 475         u16 tmp;
 476
 477         if (!pipe || pipe->info.pipenum == 0)
 478                 return;
 479
 480         pipe_stop(r8a66597, pipe);
 481         r8a66597_bset(r8a66597, ACLRM, pipe->pipectr);
 482         tmp = r8a66597_read(r8a66597, pipe->pipectr);
 483         tmp = r8a66597_read(r8a66597, pipe->pipectr);
 484         tmp = r8a66597_read(r8a66597, pipe->pipectr);
 485         r8a66597_bclr(r8a66597, ACLRM, pipe->pipectr);
 486 }
 487
 488 /* this function must be called with interrupt disabled */
 489 static void r8a66597_pipe_toggle(struct r8a66597 *r8a66597,
 490                                  struct r8a66597_pipe *pipe, int toggle)
 491 {
 492         if (toggle)
 493                 r8a66597_bset(r8a66597, SQSET, pipe->pipectr);
 494         else
 495                 r8a66597_bset(r8a66597, SQCLR, pipe->pipectr);
 496 }
 497
 498 /* this function must be called with interrupt disabled */
 499 static inline void cfifo_change(struct r8a66597 *r8a66597, u16 pipenum)
 500 {
 501         r8a66597_mdfy(r8a66597, MBW | pipenum, MBW | CURPIPE, CFIFOSEL);
 502         r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, pipenum);
 503 }
 504
 505 /* this function must be called with interrupt disabled */
 506 static inline void fifo_change_from_pipe(struct r8a66597 *r8a66597,
 507                                          struct r8a66597_pipe *pipe)
 508 {
 509         cfifo_change(r8a66597, 0);
 510         r8a66597_mdfy(r8a66597, MBW | 0, MBW | CURPIPE, D0FIFOSEL);
 511         r8a66597_mdfy(r8a66597, MBW | 0, MBW | CURPIPE, D1FIFOSEL);
 512
 513         r8a66597_mdfy(r8a66597, MBW | pipe->info.pipenum, MBW | CURPIPE,
 514                       pipe->fifosel);
 515         r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, pipe->info.pipenum);
 516 }
 517
 518 static u16 r8a66597_get_pipenum(struct urb *urb, struct usb_host_endpoint *hep)
 519 {
 520         struct r8a66597_pipe *pipe = hep->hcpriv;
 521
 522         if (usb_pipeendpoint(urb->pipe) == 0)
 523                 return 0;
 524         else
 525                 return pipe->info.pipenum;
 526 }
 527
 528 static u16 get_urb_to_r8a66597_addr(struct r8a66597 *r8a66597, struct urb *urb)
 529 {
 530         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 531
 532         return (usb_pipedevice(urb->pipe) == 0) ? 0 : dev->address;
 533 }
 534
 535 static unsigned short *get_toggle_pointer(struct r8a66597_device *dev,
 536                                           int urb_pipe)
 537 {
 538         if (!dev)
 539                 return NULL;
 540
 541         return usb_pipein(urb_pipe) ? &dev->ep_in_toggle : &dev->ep_out_toggle;
 542 }
 543
 544 /* this function must be called with interrupt disabled */
 545 static void pipe_toggle_set(struct r8a66597 *r8a66597,
 546                             struct r8a66597_pipe *pipe,
 547                             struct urb *urb, int set)
 548 {
 549         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 550         unsigned char endpoint = usb_pipeendpoint(urb->pipe);
 551         unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
 552
 553         if (!toggle)
 554                 return;
 555
 556         if (set)
 557                 *toggle |= 1 << endpoint;
 558         else
 559                 *toggle &= ~(1 << endpoint);
 560 }
 561
 562 /* this function must be called with interrupt disabled */
 563 static void pipe_toggle_save(struct r8a66597 *r8a66597,
 564                              struct r8a66597_pipe *pipe,
 565                              struct urb *urb)
 566 {
 567         if (r8a66597_read(r8a66597, pipe->pipectr) & SQMON)
 568                 pipe_toggle_set(r8a66597, pipe, urb, 1);
 569         else
 570                 pipe_toggle_set(r8a66597, pipe, urb, 0);
 571 }
 572
 573 /* this function must be called with interrupt disabled */
 574 static void pipe_toggle_restore(struct r8a66597 *r8a66597,
 575                                 struct r8a66597_pipe *pipe,
 576                                 struct urb *urb)
 577 {
 578         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 579         unsigned char endpoint = usb_pipeendpoint(urb->pipe);
 580         unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
 581
 582         if (!toggle)
 583                 return;
 584
 585         r8a66597_pipe_toggle(r8a66597, pipe, *toggle & (1 << endpoint));
 586 }
 587
 588 /* this function must be called with interrupt disabled */
 589 static void pipe_buffer_setting(struct r8a66597 *r8a66597,
 590                                 struct r8a66597_pipe_info *info)
 591 {
 592         u16 val = 0;
 593
 594         if (info->pipenum == 0)
 595                 return;
 596
 597         r8a66597_bset(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
 598         r8a66597_bclr(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
 599         r8a66597_write(r8a66597, info->pipenum, PIPESEL);
 600         if (!info->dir_in)
 601                 val |= R8A66597_DIR;
 602         if (info->type == R8A66597_BULK && info->dir_in)
 603                 val |= R8A66597_DBLB | R8A66597_SHTNAK;
 604         val |= info->type | info->epnum;
 605         r8a66597_write(r8a66597, val, PIPECFG);
 606
 607         r8a66597_write(r8a66597, (info->buf_bsize << 10) | (info->bufnum),
 608                        PIPEBUF);
 609         r8a66597_write(r8a66597, make_devsel(info->address) | info->maxpacket,
 610                        PIPEMAXP);
 611         r8a66597_write(r8a66597, info->interval, PIPEPERI);
 612 }
 613
 614 /* this function must be called with interrupt disabled */
 615 static void pipe_setting(struct r8a66597 *r8a66597, struct r8a66597_td *td)
 616 {
 617         struct r8a66597_pipe_info *info;
 618         struct urb *urb = td->urb;
 619
 620         if (td->pipenum > 0) {
 621                 info = &td->pipe->info;
 622                 cfifo_change(r8a66597, 0);
 623                 pipe_buffer_setting(r8a66597, info);
 624
 625                 if (!usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe),
 626                                    usb_pipeout(urb->pipe)) &&
 627                     !usb_pipecontrol(urb->pipe)) {
 628                         r8a66597_pipe_toggle(r8a66597, td->pipe, 0);
 629                         pipe_toggle_set(r8a66597, td->pipe, urb, 0);
 630                         clear_all_buffer(r8a66597, td->pipe);
 631                         usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
 632                                       usb_pipeout(urb->pipe), 1);
 633                 }
 634                 pipe_toggle_restore(r8a66597, td->pipe, urb);
 635         }
 636 }
 637
 638 /* this function must be called with interrupt disabled */
 639 static u16 get_empty_pipenum(struct r8a66597 *r8a66597,
 640                              struct usb_endpoint_descriptor *ep)
 641 {
 642         u16 array[R8A66597_MAX_NUM_PIPE], i = 0, min;
 643
 644         memset(array, 0, sizeof(array));
 645         switch (usb_endpoint_type(ep)) {
 646         case USB_ENDPOINT_XFER_BULK:
 647                 if (usb_endpoint_dir_in(ep))
 648                         array[i++] = 4;
 649                 else {
 650                         array[i++] = 3;
 651                         array[i++] = 5;
 652                 }
 653                 break;
 654         case USB_ENDPOINT_XFER_INT:
 655                 if (usb_endpoint_dir_in(ep)) {
 656                         array[i++] = 6;
 657                         array[i++] = 7;
 658                         array[i++] = 8;
 659                 } else
 660                         array[i++] = 9;
 661                 break;
 662         case USB_ENDPOINT_XFER_ISOC:
 663                 if (usb_endpoint_dir_in(ep))
 664                         array[i++] = 2;
 665                 else
 666                         array[i++] = 1;
 667                 break;
 668         default:
 669                 printk(KERN_ERR "r8a66597: Illegal type\n");
 670                 return 0;
 671         }
 672
 673         i = 1;
 674         min = array[0];
 675         while (array[i] != 0) {
 676                 if (r8a66597->pipe_cnt[min] > r8a66597->pipe_cnt[array[i]])
 677                         min = array[i];
 678                 i++;
 679         }
 680
 681         return min;
 682 }
 683
 684 static u16 get_r8a66597_type(__u8 type)
 685 {
 686         u16 r8a66597_type;
 687
 688         switch (type) {
 689         case USB_ENDPOINT_XFER_BULK:
 690                 r8a66597_type = R8A66597_BULK;
 691                 break;
 692         case USB_ENDPOINT_XFER_INT:
 693                 r8a66597_type = R8A66597_INT;
 694                 break;
 695         case USB_ENDPOINT_XFER_ISOC:
 696                 r8a66597_type = R8A66597_ISO;
 697                 break;
 698         default:
 699                 printk(KERN_ERR "r8a66597: Illegal type\n");
 700                 r8a66597_type = 0x0000;
 701                 break;
 702         }
 703
 704         return r8a66597_type;
 705 }
 706
 707 static u16 get_bufnum(u16 pipenum)
 708 {
 709         u16 bufnum = 0;
 710
 711         if (pipenum == 0)
 712                 bufnum = 0;
 713         else if (check_bulk_or_isoc(pipenum))
 714                 bufnum = 8 + (pipenum - 1) * R8A66597_BUF_BSIZE*2;
 715         else if (check_interrupt(pipenum))
 716                 bufnum = 4 + (pipenum - 6);
 717         else
 718                 printk(KERN_ERR "r8a66597: Illegal pipenum (%d)\n", pipenum);
 719
 720         return bufnum;
 721 }
 722
 723 static u16 get_buf_bsize(u16 pipenum)
 724 {
 725         u16 buf_bsize = 0;
 726
 727         if (pipenum == 0)
 728                 buf_bsize = 3;
 729         else if (check_bulk_or_isoc(pipenum))
 730                 buf_bsize = R8A66597_BUF_BSIZE - 1;
 731         else if (check_interrupt(pipenum))
 732                 buf_bsize = 0;
 733         else
 734                 printk(KERN_ERR "r8a66597: Illegal pipenum (%d)\n", pipenum);
 735
 736         return buf_bsize;
 737 }
 738
 739 /* this function must be called with interrupt disabled */
 740 static void enable_r8a66597_pipe_dma(struct r8a66597 *r8a66597,
 741                                      struct r8a66597_device *dev,
 742                                      struct r8a66597_pipe *pipe,
 743                                      struct urb *urb)
 744 {
 745 #if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
 746         int i;
 747         struct r8a66597_pipe_info *info = &pipe->info;
 748
 749         if ((pipe->info.pipenum != 0) && (info->type != R8A66597_INT)) {
 750                 for (i = 0; i < R8A66597_MAX_DMA_CHANNEL; i++) {
 751                         if ((r8a66597->dma_map & (1 << i)) != 0)
 752                                 continue;
 753
 754                         dev_info(&dev->udev->dev,
 755                                  "address %d, EndpointAddress 0x%02x use "
 756                                  "DMA FIFO\n", usb_pipedevice(urb->pipe),
 757                                  info->dir_in ?
 758                                         USB_ENDPOINT_DIR_MASK + info->epnum
 759                                         : info->epnum);
 760
 761                         r8a66597->dma_map |= 1 << i;
 762                         dev->dma_map |= 1 << i;
 763                         set_pipe_reg_addr(pipe, i);
 764
 765                         cfifo_change(r8a66597, 0);
 766                         r8a66597_mdfy(r8a66597, MBW | pipe->info.pipenum,
 767                                       MBW | CURPIPE, pipe->fifosel);
 768
 769                         r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE,
 770                                           pipe->info.pipenum);
 771                         r8a66597_bset(r8a66597, BCLR, pipe->fifoctr);
 772                         break;
 773                 }
 774         }
 775 #endif  /* #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) */
 776 }
 777
 778 /* this function must be called with interrupt disabled */
 779 static void enable_r8a66597_pipe(struct r8a66597 *r8a66597, struct urb *urb,
 780                                  struct usb_host_endpoint *hep,
 781                                  struct r8a66597_pipe_info *info)
 782 {
 783         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 784         struct r8a66597_pipe *pipe = hep->hcpriv;
 785
 786         dbg("enable_pipe:");
 787
 788         pipe->info = *info;
 789         set_pipe_reg_addr(pipe, R8A66597_PIPE_NO_DMA);
 790         r8a66597->pipe_cnt[pipe->info.pipenum]++;
 791         dev->pipe_cnt[pipe->info.pipenum]++;
 792
 793         enable_r8a66597_pipe_dma(r8a66597, dev, pipe, urb);
 794 }
 795
 796 /* this function must be called with interrupt disabled */
 797 static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address)
 798 {
 799         struct r8a66597_td *td, *next;
 800         struct urb *urb;
 801         struct list_head *list = &r8a66597->pipe_queue[pipenum];
 802
 803         if (list_empty(list))
 804                 return;
 805
 806         list_for_each_entry_safe(td, next, list, queue) {
 807                 if (!td)
 808                         continue;
 809                 if (td->address != address)
 810                         continue;
 811
 812                 urb = td->urb;
 813                 list_del(&td->queue);
 814                 kfree(td);
 815
 816                 if (urb) {
 817                         usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597),
 818                                         urb);
 819
 820                         spin_unlock(&r8a66597->lock);
 821                         usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb,
 822                                         -ENODEV);
 823                         spin_lock(&r8a66597->lock);
 824                 }
 825                 break;
 826         }
 827 }
 828
 829 /* this function must be called with interrupt disabled */
 830 static void disable_r8a66597_pipe_all(struct r8a66597 *r8a66597,
 831                                       struct r8a66597_device *dev)
 832 {
 833         int check_ep0 = 0;
 834         u16 pipenum;
 835
 836         if (!dev)
 837                 return;
 838
 839         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
 840                 if (!dev->pipe_cnt[pipenum])
 841                         continue;
 842
 843                 if (!check_ep0) {
 844                         check_ep0 = 1;
 845                         force_dequeue(r8a66597, 0, dev->address);
 846                 }
 847
 848                 r8a66597->pipe_cnt[pipenum] -= dev->pipe_cnt[pipenum];
 849                 dev->pipe_cnt[pipenum] = 0;
 850                 force_dequeue(r8a66597, pipenum, dev->address);
 851         }
 852
 853         dbg("disable_pipe");
 854
 855         r8a66597->dma_map &= ~(dev->dma_map);
 856         dev->dma_map = 0;
 857 }
 858
 859 static u16 get_interval(struct urb *urb, __u8 interval)
 860 {
 861         u16 time = 1;
 862         int i;
 863
 864         if (urb->dev->speed == USB_SPEED_HIGH) {
 865                 if (interval > IITV)
 866                         time = IITV;
 867                 else
 868                         time = interval ? interval - 1 : 0;
 869         } else {
 870                 if (interval > 128) {
 871                         time = IITV;
 872                 } else {
 873                         /* calculate the nearest value for PIPEPERI */
 874                         for (i = 0; i < 7; i++) {
 875                                 if ((1 << i) < interval &&
 876                                     (1 << (i + 1) > interval))
 877                                         time = 1 << i;
 878                         }
 879                 }
 880         }
 881
 882         return time;
 883 }
 884
 885 static unsigned long get_timer_interval(struct urb *urb, __u8 interval)
 886 {
 887         __u8 i;
 888         unsigned long time = 1;
 889
 890         if (usb_pipeisoc(urb->pipe))
 891                 return 0;
 892
 893         if (get_r8a66597_usb_speed(urb->dev->speed) == HSMODE) {
 894                 for (i = 0; i < (interval - 1); i++)
 895                         time *= 2;
 896                 time = time * 125 / 1000;       /* uSOF -> msec */
 897         } else {
 898                 time = interval;
 899         }
 900
 901         return time;
 902 }
 903
 904 /* this function must be called with interrupt disabled */
 905 static void init_pipe_info(struct r8a66597 *r8a66597, struct urb *urb,
 906                            struct usb_host_endpoint *hep,
 907                            struct usb_endpoint_descriptor *ep)
 908 {
 909         struct r8a66597_pipe_info info;
 910
 911         info.pipenum = get_empty_pipenum(r8a66597, ep);
 912         info.address = get_urb_to_r8a66597_addr(r8a66597, urb);
 913         info.epnum = usb_endpoint_num(ep);
 914         info.maxpacket = le16_to_cpu(ep->wMaxPacketSize);
 915         info.type = get_r8a66597_type(usb_endpoint_type(ep));
 916         info.bufnum = get_bufnum(info.pipenum);
 917         info.buf_bsize = get_buf_bsize(info.pipenum);
 918         if (info.type == R8A66597_BULK) {
 919                 info.interval = 0;
 920                 info.timer_interval = 0;
 921         } else {
 922                 info.interval = get_interval(urb, ep->bInterval);
 923                 info.timer_interval = get_timer_interval(urb, ep->bInterval);
 924         }
 925         if (usb_endpoint_dir_in(ep))
 926                 info.dir_in = 1;
 927         else
 928                 info.dir_in = 0;
 929
 930         enable_r8a66597_pipe(r8a66597, urb, hep, &info);
 931 }
 932
 933 static void init_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
 934 {
 935         struct r8a66597_device *dev;
 936
 937         dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 938         dev->state = USB_STATE_CONFIGURED;
 939 }
 940
 941 static void pipe_irq_enable(struct r8a66597 *r8a66597, struct urb *urb,
 942                             u16 pipenum)
 943 {
 944         if (pipenum == 0 && usb_pipeout(urb->pipe))
 945                 enable_irq_empty(r8a66597, pipenum);
 946         else
 947                 enable_irq_ready(r8a66597, pipenum);
 948
 949         if (!usb_pipeisoc(urb->pipe))
 950                 enable_irq_nrdy(r8a66597, pipenum);
 951 }
 952
 953 static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum)
 954 {
 955         disable_irq_ready(r8a66597, pipenum);
 956         disable_irq_nrdy(r8a66597, pipenum);
 957 }
 958
 959 static void r8a66597_root_hub_start_polling(struct r8a66597 *r8a66597)
 960 {
 961         mod_timer(&r8a66597->rh_timer,
 962                         jiffies + msecs_to_jiffies(R8A66597_RH_POLL_TIME));
 963 }
 964
 965 static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port,
 966                                         int connect)
 967 {
 968         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
 969
 970         rh->old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
 971         rh->scount = R8A66597_MAX_SAMPLING;
 972         if (connect)
 973                 rh->port |= 1 << USB_PORT_FEAT_CONNECTION;
 974         else
 975                 rh->port &= ~(1 << USB_PORT_FEAT_CONNECTION);
 976         rh->port |= 1 << USB_PORT_FEAT_C_CONNECTION;
 977
 978         r8a66597_root_hub_start_polling(r8a66597);
 979 }
 980
 981 /* this function must be called with interrupt disabled */
 982 static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port,
 983                                         u16 syssts)
 984 {
 985         if (syssts == SE0) {
 986                 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port));
 987                 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
 988                 return;
 989         }
 990
 991         if (syssts == FS_JSTS)
 992                 r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port));
 993         else if (syssts == LS_JSTS)
 994                 r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port));
 995
 996         r8a66597_write(r8a66597, ~DTCH, get_intsts_reg(port));
 997         r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port));
 998
 999         if (r8a66597->bus_suspended)
1000                 usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597));
1001 }
1002
1003 /* this function must be called with interrupt disabled */
1004 static void r8a66597_usb_connect(struct r8a66597 *r8a66597, int port)
1005 {
1006         u16 speed = get_rh_usb_speed(r8a66597, port);
1007         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1008
1009         if (speed == HSMODE)
1010                 rh->port |= (1 << USB_PORT_FEAT_HIGHSPEED);
1011         else if (speed == LSMODE)
1012                 rh->port |= (1 << USB_PORT_FEAT_LOWSPEED);
1013
1014         rh->port &= ~(1 << USB_PORT_FEAT_RESET);
1015         rh->port |= 1 << USB_PORT_FEAT_ENABLE;
1016 }
1017
1018 /* this function must be called with interrupt disabled */
1019 static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597, int port)
1020 {
1021         struct r8a66597_device *dev = r8a66597->root_hub[port].dev;
1022
1023         disable_r8a66597_pipe_all(r8a66597, dev);
1024         free_usb_address(r8a66597, dev);
1025
1026         start_root_hub_sampling(r8a66597, port, 0);
1027 }
1028
1029 /* this function must be called with interrupt disabled */
1030 static void prepare_setup_packet(struct r8a66597 *r8a66597,
1031                                  struct r8a66597_td *td)
1032 {
1033         int i;
1034         __le16 *p = (__le16 *)td->urb->setup_packet;
1035         unsigned long setup_addr = USBREQ;
1036
1037         r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket,
1038                        DCPMAXP);
1039         r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1);
1040
1041         for (i = 0; i < 4; i++) {
1042                 r8a66597_write(r8a66597, le16_to_cpu(p[i]), setup_addr);
1043                 setup_addr += 2;
1044         }
1045         r8a66597_write(r8a66597, SUREQ, DCPCTR);
1046 }
1047
1048 /* this function must be called with interrupt disabled */
1049 static void prepare_packet_read(struct r8a66597 *r8a66597,
1050                                 struct r8a66597_td *td)
1051 {
1052         struct urb *urb = td->urb;
1053
1054         if (usb_pipecontrol(urb->pipe)) {
1055                 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
1056                 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
1057                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1058                 if (urb->actual_length == 0) {
1059                         r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1060                         r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1061                 }
1062                 pipe_irq_disable(r8a66597, td->pipenum);
1063                 pipe_start(r8a66597, td->pipe);
1064                 pipe_irq_enable(r8a66597, urb, td->pipenum);
1065         } else {
1066                 if (urb->actual_length == 0) {
1067                         pipe_irq_disable(r8a66597, td->pipenum);
1068                         pipe_setting(r8a66597, td);
1069                         pipe_stop(r8a66597, td->pipe);
1070                         r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
1071
1072                         if (td->pipe->pipetre) {
1073                                 r8a66597_write(r8a66597, TRCLR,
1074                                                 td->pipe->pipetre);
1075                                 r8a66597_write(r8a66597,
1076                                                 DIV_ROUND_UP
1077                                                   (urb->transfer_buffer_length,
1078                                                    td->maxpacket),
1079                                                 td->pipe->pipetrn);
1080                                 r8a66597_bset(r8a66597, TRENB,
1081                                                 td->pipe->pipetre);
1082                         }
1083
1084                         pipe_start(r8a66597, td->pipe);
1085                         pipe_irq_enable(r8a66597, urb, td->pipenum);
1086                 }
1087         }
1088 }
1089
1090 /* this function must be called with interrupt disabled */
1091 static void prepare_packet_write(struct r8a66597 *r8a66597,
1092                                  struct r8a66597_td *td)
1093 {
1094         u16 tmp;
1095         struct urb *urb = td->urb;
1096
1097         if (usb_pipecontrol(urb->pipe)) {
1098                 pipe_stop(r8a66597, td->pipe);
1099                 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
1100                 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
1101                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1102                 if (urb->actual_length == 0) {
1103                         r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1104                         r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1105                 }
1106         } else {
1107                 if (urb->actual_length == 0)
1108                         pipe_setting(r8a66597, td);
1109                 if (td->pipe->pipetre)
1110                         r8a66597_bclr(r8a66597, TRENB, td->pipe->pipetre);
1111         }
1112         r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
1113
1114         fifo_change_from_pipe(r8a66597, td->pipe);
1115         tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1116         if (unlikely((tmp & FRDY) == 0))
1117                 pipe_irq_enable(r8a66597, urb, td->pipenum);
1118         else
1119                 packet_write(r8a66597, td->pipenum);
1120         pipe_start(r8a66597, td->pipe);
1121 }
1122
1123 /* this function must be called with interrupt disabled */
1124 static void prepare_status_packet(struct r8a66597 *r8a66597,
1125                                   struct r8a66597_td *td)
1126 {
1127         struct urb *urb = td->urb;
1128
1129         r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1130         pipe_stop(r8a66597, td->pipe);
1131
1132         if (urb->setup_packet[0] & USB_ENDPOINT_DIR_MASK) {
1133                 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
1134                 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
1135                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1136                 r8a66597_write(r8a66597, ~BEMP0, BEMPSTS);
1137                 r8a66597_write(r8a66597, BCLR | BVAL, CFIFOCTR);
1138                 enable_irq_empty(r8a66597, 0);
1139         } else {
1140                 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
1141                 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
1142                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1143                 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1144                 enable_irq_ready(r8a66597, 0);
1145         }
1146         enable_irq_nrdy(r8a66597, 0);
1147         pipe_start(r8a66597, td->pipe);
1148 }
1149
1150 static int is_set_address(unsigned char *setup_packet)
1151 {
1152         if (((setup_packet[0] & USB_TYPE_MASK) == USB_TYPE_STANDARD) &&
1153                         setup_packet[1] == USB_REQ_SET_ADDRESS)
1154                 return 1;
1155         else
1156                 return 0;
1157 }
1158
1159 /* this function must be called with interrupt disabled */
1160 static int start_transfer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1161 {
1162         BUG_ON(!td);
1163
1164         switch (td->type) {
1165         case USB_PID_SETUP:
1166                 if (is_set_address(td->urb->setup_packet)) {
1167                         td->set_address = 1;
1168                         td->urb->setup_packet[2] = alloc_usb_address(r8a66597,
1169                                                                      td->urb);
1170                         if (td->urb->setup_packet[2] == 0)
1171                                 return -EPIPE;
1172                 }
1173                 prepare_setup_packet(r8a66597, td);
1174                 break;
1175         case USB_PID_IN:
1176                 prepare_packet_read(r8a66597, td);
1177                 break;
1178         case USB_PID_OUT:
1179                 prepare_packet_write(r8a66597, td);
1180                 break;
1181         case USB_PID_ACK:
1182                 prepare_status_packet(r8a66597, td);
1183                 break;
1184         default:
1185                 printk(KERN_ERR "r8a66597: invalid type.\n");
1186                 break;
1187         }
1188
1189         return 0;
1190 }
1191
1192 static int check_transfer_finish(struct r8a66597_td *td, struct urb *urb)
1193 {
1194         if (usb_pipeisoc(urb->pipe)) {
1195                 if (urb->number_of_packets == td->iso_cnt)
1196                         return 1;
1197         }
1198
1199         /* control or bulk or interrupt */
1200         if ((urb->transfer_buffer_length <= urb->actual_length) ||
1201             (td->short_packet) || (td->zero_packet))
1202                 return 1;
1203
1204         return 0;
1205 }
1206
1207 /* this function must be called with interrupt disabled */
1208 static void set_td_timer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1209 {
1210         unsigned long time;
1211
1212         BUG_ON(!td);
1213
1214         if (!list_empty(&r8a66597->pipe_queue[td->pipenum]) &&
1215             !usb_pipecontrol(td->urb->pipe) && usb_pipein(td->urb->pipe)) {
1216                 r8a66597->timeout_map |= 1 << td->pipenum;
1217                 switch (usb_pipetype(td->urb->pipe)) {
1218                 case PIPE_INTERRUPT:
1219                 case PIPE_ISOCHRONOUS:
1220                         time = 30;
1221                         break;
1222                 default:
1223                         time = 300;
1224                         break;
1225                 }
1226
1227                 mod_timer(&r8a66597->td_timer[td->pipenum],
1228                           jiffies + msecs_to_jiffies(time));
1229         }
1230 }
1231
1232 /* this function must be called with interrupt disabled */
1233 static void finish_request(struct r8a66597 *r8a66597, struct r8a66597_td *td,
1234                 u16 pipenum, struct urb *urb, int status)
1235 __releases(r8a66597->lock) __acquires(r8a66597->lock)
1236 {
1237         int restart = 0;
1238         struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
1239
1240         r8a66597->timeout_map &= ~(1 << pipenum);
1241
1242         if (likely(td)) {
1243                 if (td->set_address && (status != 0 || urb->unlinked))
1244                         r8a66597->address_map &= ~(1 << urb->setup_packet[2]);
1245
1246                 pipe_toggle_save(r8a66597, td->pipe, urb);
1247                 list_del(&td->queue);
1248                 kfree(td);
1249         }
1250
1251         if (!list_empty(&r8a66597->pipe_queue[pipenum]))
1252                 restart = 1;
1253
1254         if (likely(urb)) {
1255                 if (usb_pipeisoc(urb->pipe))
1256                         urb->start_frame = r8a66597_get_frame(hcd);
1257
1258                 usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb);
1259                 spin_unlock(&r8a66597->lock);
1260                 usb_hcd_giveback_urb(hcd, urb, status);
1261                 spin_lock(&r8a66597->lock);
1262         }
1263
1264         if (restart) {
1265                 td = r8a66597_get_td(r8a66597, pipenum);
1266                 if (unlikely(!td))
1267                         return;
1268
1269                 start_transfer(r8a66597, td);
1270                 set_td_timer(r8a66597, td);
1271         }
1272 }
1273
1274 static void packet_read(struct r8a66597 *r8a66597, u16 pipenum)
1275 {
1276         u16 tmp;
1277         int rcv_len, bufsize, urb_len, size;
1278         u16 *buf;
1279         struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1280         struct urb *urb;
1281         int finish = 0;
1282         int status = 0;
1283
1284         if (unlikely(!td))
1285                 return;
1286         urb = td->urb;
1287
1288         fifo_change_from_pipe(r8a66597, td->pipe);
1289         tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1290         if (unlikely((tmp & FRDY) == 0)) {
1291                 pipe_stop(r8a66597, td->pipe);
1292                 pipe_irq_disable(r8a66597, pipenum);
1293                 printk(KERN_ERR "r8a66597: in fifo not ready (%d)\n", pipenum);
1294                 finish_request(r8a66597, td, pipenum, td->urb, -EPIPE);
1295                 return;
1296         }
1297
1298         /* prepare parameters */
1299         rcv_len = tmp & DTLN;
1300         if (usb_pipeisoc(urb->pipe)) {
1301                 buf = (u16 *)(urb->transfer_buffer +
1302                                 urb->iso_frame_desc[td->iso_cnt].offset);
1303                 urb_len = urb->iso_frame_desc[td->iso_cnt].length;
1304         } else {
1305                 buf = (void *)urb->transfer_buffer + urb->actual_length;
1306                 urb_len = urb->transfer_buffer_length - urb->actual_length;
1307         }
1308         bufsize = min(urb_len, (int) td->maxpacket);
1309         if (rcv_len <= bufsize) {
1310                 size = rcv_len;
1311         } else {
1312                 size = bufsize;
1313                 status = -EOVERFLOW;
1314                 finish = 1;
1315         }
1316
1317         /* update parameters */
1318         urb->actual_length += size;
1319         if (rcv_len == 0)
1320                 td->zero_packet = 1;
1321         if (rcv_len < bufsize) {
1322                 td->short_packet = 1;
1323         }
1324         if (usb_pipeisoc(urb->pipe)) {
1325                 urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1326                 urb->iso_frame_desc[td->iso_cnt].status = status;
1327                 td->iso_cnt++;
1328                 finish = 0;
1329         }
1330
1331         /* check transfer finish */
1332         if (finish || check_transfer_finish(td, urb)) {
1333                 pipe_stop(r8a66597, td->pipe);
1334                 pipe_irq_disable(r8a66597, pipenum);
1335                 finish = 1;
1336         }
1337
1338         /* read fifo */
1339         if (urb->transfer_buffer) {
1340                 if (size == 0)
1341                         r8a66597_write(r8a66597, BCLR, td->pipe->fifoctr);
1342                 else
1343                         r8a66597_read_fifo(r8a66597, td->pipe->fifoaddr,
1344                                            buf, size);
1345         }
1346
1347         if (finish && pipenum != 0)
1348                 finish_request(r8a66597, td, pipenum, urb, status);
1349 }
1350
1351 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum)
1352 {
1353         u16 tmp;
1354         int bufsize, size;
1355         u16 *buf;
1356         struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1357         struct urb *urb;
1358
1359         if (unlikely(!td))
1360                 return;
1361         urb = td->urb;
1362
1363         fifo_change_from_pipe(r8a66597, td->pipe);
1364         tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1365         if (unlikely((tmp & FRDY) == 0)) {
1366                 pipe_stop(r8a66597, td->pipe);
1367                 pipe_irq_disable(r8a66597, pipenum);
1368                 printk(KERN_ERR "r8a66597: out fifo not ready (%d)\n", pipenum);
1369                 finish_request(r8a66597, td, pipenum, urb, -EPIPE);
1370                 return;
1371         }
1372
1373         /* prepare parameters */
1374         bufsize = td->maxpacket;
1375         if (usb_pipeisoc(urb->pipe)) {
1376                 buf = (u16 *)(urb->transfer_buffer +
1377                                 urb->iso_frame_desc[td->iso_cnt].offset);
1378                 size = min(bufsize,
1379                            (int)urb->iso_frame_desc[td->iso_cnt].length);
1380         } else {
1381                 buf = (u16 *)(urb->transfer_buffer + urb->actual_length);
1382                 size = min_t(u32, bufsize,
1383                            urb->transfer_buffer_length - urb->actual_length);
1384         }
1385
1386         /* write fifo */
1387         if (pipenum > 0)
1388                 r8a66597_write(r8a66597, ~(1 << pipenum), BEMPSTS);
1389         if (urb->transfer_buffer) {
1390                 r8a66597_write_fifo(r8a66597, td->pipe->fifoaddr, buf, size);
1391                 if (!usb_pipebulk(urb->pipe) || td->maxpacket != size)
1392                         r8a66597_write(r8a66597, BVAL, td->pipe->fifoctr);
1393         }
1394
1395         /* update parameters */
1396         urb->actual_length += size;
1397         if (usb_pipeisoc(urb->pipe)) {
1398                 urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1399                 urb->iso_frame_desc[td->iso_cnt].status = 0;
1400                 td->iso_cnt++;
1401         }
1402
1403         /* check transfer finish */
1404         if (check_transfer_finish(td, urb)) {
1405                 disable_irq_ready(r8a66597, pipenum);
1406                 enable_irq_empty(r8a66597, pipenum);
1407                 if (!usb_pipeisoc(urb->pipe))
1408                         enable_irq_nrdy(r8a66597, pipenum);
1409         } else
1410                 pipe_irq_enable(r8a66597, urb, pipenum);
1411 }
1412
1413
1414 static void check_next_phase(struct r8a66597 *r8a66597, int status)
1415 {
1416         struct r8a66597_td *td = r8a66597_get_td(r8a66597, 0);
1417         struct urb *urb;
1418         u8 finish = 0;
1419
1420         if (unlikely(!td))
1421                 return;
1422         urb = td->urb;
1423
1424         switch (td->type) {
1425         case USB_PID_IN:
1426         case USB_PID_OUT:
1427                 if (check_transfer_finish(td, urb))
1428                         td->type = USB_PID_ACK;
1429                 break;
1430         case USB_PID_SETUP:
1431                 if (urb->transfer_buffer_length == urb->actual_length)
1432                         td->type = USB_PID_ACK;
1433                 else if (usb_pipeout(urb->pipe))
1434                         td->type = USB_PID_OUT;
1435                 else
1436                         td->type = USB_PID_IN;
1437                 break;
1438         case USB_PID_ACK:
1439                 finish = 1;
1440                 break;
1441         }
1442
1443         if (finish || status != 0 || urb->unlinked)
1444                 finish_request(r8a66597, td, 0, urb, status);
1445         else
1446                 start_transfer(r8a66597, td);
1447 }
1448
1449 static int get_urb_error(struct r8a66597 *r8a66597, u16 pipenum)
1450 {
1451         struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1452
1453         if (td) {
1454                 u16 pid = r8a66597_read(r8a66597, td->pipe->pipectr) & PID;
1455
1456                 if (pid == PID_NAK)
1457                         return -ECONNRESET;
1458                 else
1459                         return -EPIPE;
1460         }
1461         return 0;
1462 }
1463
1464 static void irq_pipe_ready(struct r8a66597 *r8a66597)
1465 {
1466         u16 check;
1467         u16 pipenum;
1468         u16 mask;
1469         struct r8a66597_td *td;
1470
1471         mask = r8a66597_read(r8a66597, BRDYSTS)
1472                & r8a66597_read(r8a66597, BRDYENB);
1473         r8a66597_write(r8a66597, ~mask, BRDYSTS);
1474         if (mask & BRDY0) {
1475                 td = r8a66597_get_td(r8a66597, 0);
1476                 if (td && td->type == USB_PID_IN)
1477                         packet_read(r8a66597, 0);
1478                 else
1479                         pipe_irq_disable(r8a66597, 0);
1480                 check_next_phase(r8a66597, 0);
1481         }
1482
1483         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1484                 check = 1 << pipenum;
1485                 if (mask & check) {
1486                         td = r8a66597_get_td(r8a66597, pipenum);
1487                         if (unlikely(!td))
1488                                 continue;
1489
1490                         if (td->type == USB_PID_IN)
1491                                 packet_read(r8a66597, pipenum);
1492                         else if (td->type == USB_PID_OUT)
1493                                 packet_write(r8a66597, pipenum);
1494                 }
1495         }
1496 }
1497
1498 static void irq_pipe_empty(struct r8a66597 *r8a66597)
1499 {
1500         u16 tmp;
1501         u16 check;
1502         u16 pipenum;
1503         u16 mask;
1504         struct r8a66597_td *td;
1505
1506         mask = r8a66597_read(r8a66597, BEMPSTS)
1507                & r8a66597_read(r8a66597, BEMPENB);
1508         r8a66597_write(r8a66597, ~mask, BEMPSTS);
1509         if (mask & BEMP0) {
1510                 cfifo_change(r8a66597, 0);
1511                 td = r8a66597_get_td(r8a66597, 0);
1512                 if (td && td->type != USB_PID_OUT)
1513                         disable_irq_empty(r8a66597, 0);
1514                 check_next_phase(r8a66597, 0);
1515         }
1516
1517         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1518                 check = 1 << pipenum;
1519                 if (mask &  check) {
1520                         struct r8a66597_td *td;
1521                         td = r8a66597_get_td(r8a66597, pipenum);
1522                         if (unlikely(!td))
1523                                 continue;
1524
1525                         tmp = r8a66597_read(r8a66597, td->pipe->pipectr);
1526                         if ((tmp & INBUFM) == 0) {
1527                                 disable_irq_empty(r8a66597, pipenum);
1528                                 pipe_irq_disable(r8a66597, pipenum);
1529                                 finish_request(r8a66597, td, pipenum, td->urb,
1530                                                 0);
1531                         }
1532                 }
1533         }
1534 }
1535
1536 static void irq_pipe_nrdy(struct r8a66597 *r8a66597)
1537 {
1538         u16 check;
1539         u16 pipenum;
1540         u16 mask;
1541         int status;
1542
1543         mask = r8a66597_read(r8a66597, NRDYSTS)
1544                & r8a66597_read(r8a66597, NRDYENB);
1545         r8a66597_write(r8a66597, ~mask, NRDYSTS);
1546         if (mask & NRDY0) {
1547                 cfifo_change(r8a66597, 0);
1548                 status = get_urb_error(r8a66597, 0);
1549                 pipe_irq_disable(r8a66597, 0);
1550                 check_next_phase(r8a66597, status);
1551         }
1552
1553         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1554                 check = 1 << pipenum;
1555                 if (mask & check) {
1556                         struct r8a66597_td *td;
1557                         td = r8a66597_get_td(r8a66597, pipenum);
1558                         if (unlikely(!td))
1559                                 continue;
1560
1561                         status = get_urb_error(r8a66597, pipenum);
1562                         pipe_irq_disable(r8a66597, pipenum);
1563                         pipe_stop(r8a66597, td->pipe);
1564                         finish_request(r8a66597, td, pipenum, td->urb, status);
1565                 }
1566         }
1567 }
1568
1569 static irqreturn_t r8a66597_irq(struct usb_hcd *hcd)
1570 {
1571         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1572         u16 intsts0, intsts1, intsts2;
1573         u16 intenb0, intenb1, intenb2;
1574         u16 mask0, mask1, mask2;
1575         int status;
1576
1577         spin_lock(&r8a66597->lock);
1578
1579         intsts0 = r8a66597_read(r8a66597, INTSTS0);
1580         intsts1 = r8a66597_read(r8a66597, INTSTS1);
1581         intsts2 = r8a66597_read(r8a66597, INTSTS2);
1582         intenb0 = r8a66597_read(r8a66597, INTENB0);
1583         intenb1 = r8a66597_read(r8a66597, INTENB1);
1584         intenb2 = r8a66597_read(r8a66597, INTENB2);
1585
1586         mask2 = intsts2 & intenb2;
1587         mask1 = intsts1 & intenb1;
1588         mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY);
1589         if (mask2) {
1590                 if (mask2 & ATTCH) {
1591                         r8a66597_write(r8a66597, ~ATTCH, INTSTS2);
1592                         r8a66597_bclr(r8a66597, ATTCHE, INTENB2);
1593
1594                         /* start usb bus sampling */
1595                         start_root_hub_sampling(r8a66597, 1, 1);
1596                 }
1597                 if (mask2 & DTCH) {
1598                         r8a66597_write(r8a66597, ~DTCH, INTSTS2);
1599                         r8a66597_bclr(r8a66597, DTCHE, INTENB2);
1600                         r8a66597_usb_disconnect(r8a66597, 1);
1601                 }
1602                 if (mask2 & BCHG) {
1603                         r8a66597_write(r8a66597, ~BCHG, INTSTS2);
1604                         r8a66597_bclr(r8a66597, BCHGE, INTENB2);
1605                         usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597));
1606                 }
1607         }
1608
1609         if (mask1) {
1610                 if (mask1 & ATTCH) {
1611                         r8a66597_write(r8a66597, ~ATTCH, INTSTS1);
1612                         r8a66597_bclr(r8a66597, ATTCHE, INTENB1);
1613
1614                         /* start usb bus sampling */
1615                         start_root_hub_sampling(r8a66597, 0, 1);
1616                 }
1617                 if (mask1 & DTCH) {
1618                         r8a66597_write(r8a66597, ~DTCH, INTSTS1);
1619                         r8a66597_bclr(r8a66597, DTCHE, INTENB1);
1620                         r8a66597_usb_disconnect(r8a66597, 0);
1621                 }
1622                 if (mask1 & BCHG) {
1623                         r8a66597_write(r8a66597, ~BCHG, INTSTS1);
1624                         r8a66597_bclr(r8a66597, BCHGE, INTENB1);
1625                         usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597));
1626                 }
1627
1628                 if (mask1 & SIGN) {
1629                         r8a66597_write(r8a66597, ~SIGN, INTSTS1);
1630                         status = get_urb_error(r8a66597, 0);
1631                         check_next_phase(r8a66597, status);
1632                 }
1633                 if (mask1 & SACK) {
1634                         r8a66597_write(r8a66597, ~SACK, INTSTS1);
1635                         check_next_phase(r8a66597, 0);
1636                 }
1637         }
1638         if (mask0) {
1639                 if (mask0 & BRDY)
1640                         irq_pipe_ready(r8a66597);
1641                 if (mask0 & BEMP)
1642                         irq_pipe_empty(r8a66597);
1643                 if (mask0 & NRDY)
1644                         irq_pipe_nrdy(r8a66597);
1645         }
1646
1647         spin_unlock(&r8a66597->lock);
1648         return IRQ_HANDLED;
1649 }
1650
1651 /* this function must be called with interrupt disabled */
1652 static void r8a66597_root_hub_control(struct r8a66597 *r8a66597, int port)
1653 {
1654         u16 tmp;
1655         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1656
1657         if (rh->port & (1 << USB_PORT_FEAT_RESET)) {
1658                 unsigned long dvstctr_reg = get_dvstctr_reg(port);
1659
1660                 tmp = r8a66597_read(r8a66597, dvstctr_reg);
1661                 if ((tmp & USBRST) == USBRST) {
1662                         r8a66597_mdfy(r8a66597, UACT, USBRST | UACT,
1663                                       dvstctr_reg);
1664                         r8a66597_root_hub_start_polling(r8a66597);
1665                 } else
1666                         r8a66597_usb_connect(r8a66597, port);
1667         }
1668
1669         if (!(rh->port & (1 << USB_PORT_FEAT_CONNECTION))) {
1670                 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port));
1671                 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
1672         }
1673
1674         if (rh->scount > 0) {
1675                 tmp = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
1676                 if (tmp == rh->old_syssts) {
1677                         rh->scount--;
1678                         if (rh->scount == 0)
1679                                 r8a66597_check_syssts(r8a66597, port, tmp);
1680                         else
1681                                 r8a66597_root_hub_start_polling(r8a66597);
1682                 } else {
1683                         rh->scount = R8A66597_MAX_SAMPLING;
1684                         rh->old_syssts = tmp;
1685                         r8a66597_root_hub_start_polling(r8a66597);
1686                 }
1687         }
1688 }
1689
1690 static void r8a66597_interval_timer(unsigned long _r8a66597)
1691 {
1692         struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1693         unsigned long flags;
1694         u16 pipenum;
1695         struct r8a66597_td *td;
1696
1697         spin_lock_irqsave(&r8a66597->lock, flags);
1698
1699         for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1700                 if (!(r8a66597->interval_map & (1 << pipenum)))
1701                         continue;
1702                 if (timer_pending(&r8a66597->interval_timer[pipenum]))
1703                         continue;
1704
1705                 td = r8a66597_get_td(r8a66597, pipenum);
1706                 if (td)
1707                         start_transfer(r8a66597, td);
1708         }
1709
1710         spin_unlock_irqrestore(&r8a66597->lock, flags);
1711 }
1712
1713 static void r8a66597_td_timer(unsigned long _r8a66597)
1714 {
1715         struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1716         unsigned long flags;
1717         u16 pipenum;
1718         struct r8a66597_td *td, *new_td = NULL;
1719         struct r8a66597_pipe *pipe;
1720
1721         spin_lock_irqsave(&r8a66597->lock, flags);
1722         for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1723                 if (!(r8a66597->timeout_map & (1 << pipenum)))
1724                         continue;
1725                 if (timer_pending(&r8a66597->td_timer[pipenum]))
1726                         continue;
1727
1728                 td = r8a66597_get_td(r8a66597, pipenum);
1729                 if (!td) {
1730                         r8a66597->timeout_map &= ~(1 << pipenum);
1731                         continue;
1732                 }
1733
1734                 if (td->urb->actual_length) {
1735                         set_td_timer(r8a66597, td);
1736                         break;
1737                 }
1738
1739                 pipe = td->pipe;
1740                 pipe_stop(r8a66597, pipe);
1741
1742                 new_td = td;
1743                 do {
1744                         list_move_tail(&new_td->queue,
1745                                        &r8a66597->pipe_queue[pipenum]);
1746                         new_td = r8a66597_get_td(r8a66597, pipenum);
1747                         if (!new_td) {
1748                                 new_td = td;
1749                                 break;
1750                         }
1751                 } while (td != new_td && td->address == new_td->address);
1752
1753                 start_transfer(r8a66597, new_td);
1754
1755                 if (td == new_td)
1756                         r8a66597->timeout_map &= ~(1 << pipenum);
1757                 else
1758                         set_td_timer(r8a66597, new_td);
1759                 break;
1760         }
1761         spin_unlock_irqrestore(&r8a66597->lock, flags);
1762 }
1763
1764 static void r8a66597_timer(unsigned long _r8a66597)
1765 {
1766         struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1767         unsigned long flags;
1768         int port;
1769
1770         spin_lock_irqsave(&r8a66597->lock, flags);
1771
1772         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
1773                 r8a66597_root_hub_control(r8a66597, port);
1774
1775         spin_unlock_irqrestore(&r8a66597->lock, flags);
1776 }
1777
1778 static int check_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
1779 {
1780         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
1781
1782         if (dev && dev->address && dev->state != USB_STATE_CONFIGURED &&
1783             (urb->dev->state == USB_STATE_CONFIGURED))
1784                 return 1;
1785         else
1786                 return 0;
1787 }
1788
1789 static int r8a66597_start(struct usb_hcd *hcd)
1790 {
1791         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1792
1793         hcd->state = HC_STATE_RUNNING;
1794         return enable_controller(r8a66597);
1795 }
1796
1797 static void r8a66597_stop(struct usb_hcd *hcd)
1798 {
1799         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1800
1801         disable_controller(r8a66597);
1802 }
1803
1804 static void set_address_zero(struct r8a66597 *r8a66597, struct urb *urb)
1805 {
1806         unsigned int usb_address = usb_pipedevice(urb->pipe);
1807         u16 root_port, hub_port;
1808
1809         if (usb_address == 0) {
1810                 get_port_number(urb->dev->devpath,
1811                                 &root_port, &hub_port);
1812                 set_devadd_reg(r8a66597, 0,
1813                                get_r8a66597_usb_speed(urb->dev->speed),
1814                                get_parent_r8a66597_address(r8a66597, urb->dev),
1815                                hub_port, root_port);
1816         }
1817 }
1818
1819 static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597,
1820                                             struct urb *urb,
1821                                             struct usb_host_endpoint *hep)
1822 {
1823         struct r8a66597_td *td;
1824         u16 pipenum;
1825
1826         td = kzalloc(sizeof(struct r8a66597_td), GFP_ATOMIC);
1827         if (td == NULL)
1828                 return NULL;
1829
1830         pipenum = r8a66597_get_pipenum(urb, hep);
1831         td->pipenum = pipenum;
1832         td->pipe = hep->hcpriv;
1833         td->urb = urb;
1834         td->address = get_urb_to_r8a66597_addr(r8a66597, urb);
1835         td->maxpacket = usb_maxpacket(urb->dev, urb->pipe,
1836                                       !usb_pipein(urb->pipe));
1837         if (usb_pipecontrol(urb->pipe))
1838                 td->type = USB_PID_SETUP;
1839         else if (usb_pipein(urb->pipe))
1840                 td->type = USB_PID_IN;
1841         else
1842                 td->type = USB_PID_OUT;
1843         INIT_LIST_HEAD(&td->queue);
1844
1845         return td;
1846 }
1847
1848 static int r8a66597_urb_enqueue(struct usb_hcd *hcd,
1849                                 struct urb *urb,
1850                                 gfp_t mem_flags)
1851 {
1852         struct usb_host_endpoint *hep = urb->ep;
1853         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1854         struct r8a66597_td *td = NULL;
1855         int ret, request = 0;
1856         unsigned long flags;
1857
1858         spin_lock_irqsave(&r8a66597->lock, flags);
1859         if (!get_urb_to_r8a66597_dev(r8a66597, urb)) {
1860                 ret = -ENODEV;
1861                 goto error_not_linked;
1862         }
1863
1864         ret = usb_hcd_link_urb_to_ep(hcd, urb);
1865         if (ret)
1866                 goto error_not_linked;
1867
1868         if (!hep->hcpriv) {
1869                 hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe),
1870                                 GFP_ATOMIC);
1871                 if (!hep->hcpriv) {
1872                         ret = -ENOMEM;
1873                         goto error;
1874                 }
1875                 set_pipe_reg_addr(hep->hcpriv, R8A66597_PIPE_NO_DMA);
1876                 if (usb_pipeendpoint(urb->pipe))
1877                         init_pipe_info(r8a66597, urb, hep, &hep->desc);
1878         }
1879
1880         if (unlikely(check_pipe_config(r8a66597, urb)))
1881                 init_pipe_config(r8a66597, urb);
1882
1883         set_address_zero(r8a66597, urb);
1884         td = r8a66597_make_td(r8a66597, urb, hep);
1885         if (td == NULL) {
1886                 ret = -ENOMEM;
1887                 goto error;
1888         }
1889         if (list_empty(&r8a66597->pipe_queue[td->pipenum]))
1890                 request = 1;
1891         list_add_tail(&td->queue, &r8a66597->pipe_queue[td->pipenum]);
1892         urb->hcpriv = td;
1893
1894         if (request) {
1895                 if (td->pipe->info.timer_interval) {
1896                         r8a66597->interval_map |= 1 << td->pipenum;
1897                         mod_timer(&r8a66597->interval_timer[td->pipenum],
1898                                   jiffies + msecs_to_jiffies(
1899                                         td->pipe->info.timer_interval));
1900                 } else {
1901                         ret = start_transfer(r8a66597, td);
1902                         if (ret < 0) {
1903                                 list_del(&td->queue);
1904                                 kfree(td);
1905                         }
1906                 }
1907         } else
1908                 set_td_timer(r8a66597, td);
1909
1910 error:
1911         if (ret)
1912                 usb_hcd_unlink_urb_from_ep(hcd, urb);
1913 error_not_linked:
1914         spin_unlock_irqrestore(&r8a66597->lock, flags);
1915         return ret;
1916 }
1917
1918 static int r8a66597_urb_dequeue(struct usb_hcd *hcd, struct urb *urb,
1919                 int status)
1920 {
1921         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1922         struct r8a66597_td *td;
1923         unsigned long flags;
1924         int rc;
1925
1926         spin_lock_irqsave(&r8a66597->lock, flags);
1927         rc = usb_hcd_check_unlink_urb(hcd, urb, status);
1928         if (rc)
1929                 goto done;
1930
1931         if (urb->hcpriv) {
1932                 td = urb->hcpriv;
1933                 pipe_stop(r8a66597, td->pipe);
1934                 pipe_irq_disable(r8a66597, td->pipenum);
1935                 disable_irq_empty(r8a66597, td->pipenum);
1936                 finish_request(r8a66597, td, td->pipenum, urb, status);
1937         }
1938  done:
1939         spin_unlock_irqrestore(&r8a66597->lock, flags);
1940         return rc;
1941 }
1942
1943 static void r8a66597_endpoint_disable(struct usb_hcd *hcd,
1944                                       struct usb_host_endpoint *hep)
1945 {
1946         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1947         struct r8a66597_pipe *pipe = (struct r8a66597_pipe *)hep->hcpriv;
1948         struct r8a66597_td *td;
1949         struct urb *urb = NULL;
1950         u16 pipenum;
1951         unsigned long flags;
1952
1953         if (pipe == NULL)
1954                 return;
1955         pipenum = pipe->info.pipenum;
1956
1957         if (pipenum == 0) {
1958                 kfree(hep->hcpriv);
1959                 hep->hcpriv = NULL;
1960                 return;
1961         }
1962
1963         spin_lock_irqsave(&r8a66597->lock, flags);
1964         pipe_stop(r8a66597, pipe);
1965         pipe_irq_disable(r8a66597, pipenum);
1966         disable_irq_empty(r8a66597, pipenum);
1967         td = r8a66597_get_td(r8a66597, pipenum);
1968         if (td)
1969                 urb = td->urb;
1970         finish_request(r8a66597, td, pipenum, urb, -ESHUTDOWN);
1971         kfree(hep->hcpriv);
1972         hep->hcpriv = NULL;
1973         spin_unlock_irqrestore(&r8a66597->lock, flags);
1974 }
1975
1976 static int r8a66597_get_frame(struct usb_hcd *hcd)
1977 {
1978         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1979         return r8a66597_read(r8a66597, FRMNUM) & 0x03FF;
1980 }
1981
1982 static void collect_usb_address_map(struct usb_device *udev, unsigned long *map)
1983 {
1984         int chix;
1985
1986         if (udev->state == USB_STATE_CONFIGURED &&
1987             udev->parent && udev->parent->devnum > 1 &&
1988             udev->parent->descriptor.bDeviceClass == USB_CLASS_HUB)
1989                 map[udev->devnum/32] |= (1 << (udev->devnum % 32));
1990
1991         for (chix = 0; chix < udev->maxchild; chix++) {
1992                 struct usb_device *childdev = udev->children[chix];
1993
1994                 if (childdev)
1995                         collect_usb_address_map(childdev, map);
1996         }
1997 }
1998
1999 /* this function must be called with interrupt disabled */
2000 static struct r8a66597_device *get_r8a66597_device(struct r8a66597 *r8a66597,
2001                                                    int addr)
2002 {
2003         struct r8a66597_device *dev;
2004         struct list_head *list = &r8a66597->child_device;
2005
2006         list_for_each_entry(dev, list, device_list) {
2007                 if (!dev)
2008                         continue;
2009                 if (dev->usb_address != addr)
2010                         continue;
2011
2012                 return dev;
2013         }
2014
2015         printk(KERN_ERR "r8a66597: get_r8a66597_device fail.(%d)\n", addr);
2016         return NULL;
2017 }
2018
2019 static void update_usb_address_map(struct r8a66597 *r8a66597,
2020                                    struct usb_device *root_hub,
2021                                    unsigned long *map)
2022 {
2023         int i, j, addr;
2024         unsigned long diff;
2025         unsigned long flags;
2026
2027         for (i = 0; i < 4; i++) {
2028                 diff = r8a66597->child_connect_map[i] ^ map[i];
2029                 if (!diff)
2030                         continue;
2031
2032                 for (j = 0; j < 32; j++) {
2033                         if (!(diff & (1 << j)))
2034                                 continue;
2035
2036                         addr = i * 32 + j;
2037                         if (map[i] & (1 << j))
2038                                 set_child_connect_map(r8a66597, addr);
2039                         else {
2040                                 struct r8a66597_device *dev;
2041
2042                                 spin_lock_irqsave(&r8a66597->lock, flags);
2043                                 dev = get_r8a66597_device(r8a66597, addr);
2044                                 disable_r8a66597_pipe_all(r8a66597, dev);
2045                                 free_usb_address(r8a66597, dev);
2046                                 put_child_connect_map(r8a66597, addr);
2047                                 spin_unlock_irqrestore(&r8a66597->lock, flags);
2048                         }
2049                 }
2050         }
2051 }
2052
2053 static void r8a66597_check_detect_child(struct r8a66597 *r8a66597,
2054                                         struct usb_hcd *hcd)
2055 {
2056         struct usb_bus *bus;
2057         unsigned long now_map[4];
2058
2059         memset(now_map, 0, sizeof(now_map));
2060
2061         list_for_each_entry(bus, &usb_bus_list, bus_list) {
2062                 if (!bus->root_hub)
2063                         continue;
2064
2065                 if (bus->busnum != hcd->self.busnum)
2066                         continue;
2067
2068                 collect_usb_address_map(bus->root_hub, now_map);
2069                 update_usb_address_map(r8a66597, bus->root_hub, now_map);
2070         }
2071 }
2072
2073 static int r8a66597_hub_status_data(struct usb_hcd *hcd, char *buf)
2074 {
2075         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2076         unsigned long flags;
2077         int i;
2078
2079         r8a66597_check_detect_child(r8a66597, hcd);
2080
2081         spin_lock_irqsave(&r8a66597->lock, flags);
2082
2083         *buf = 0;       /* initialize (no change) */
2084
2085         for (i = 0; i < R8A66597_MAX_ROOT_HUB; i++) {
2086                 if (r8a66597->root_hub[i].port & 0xffff0000)
2087                         *buf |= 1 << (i + 1);
2088         }
2089
2090         spin_unlock_irqrestore(&r8a66597->lock, flags);
2091
2092         return (*buf != 0);
2093 }
2094
2095 static void r8a66597_hub_descriptor(struct r8a66597 *r8a66597,
2096                                     struct usb_hub_descriptor *desc)
2097 {
2098         desc->bDescriptorType = 0x29;
2099         desc->bHubContrCurrent = 0;
2100         desc->bNbrPorts = R8A66597_MAX_ROOT_HUB;
2101         desc->bDescLength = 9;
2102         desc->bPwrOn2PwrGood = 0;
2103         desc->wHubCharacteristics = cpu_to_le16(0x0011);
2104         desc->bitmap[0] = ((1 << R8A66597_MAX_ROOT_HUB) - 1) << 1;
2105         desc->bitmap[1] = ~0;
2106 }
2107
2108 static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
2109                                 u16 wIndex, char *buf, u16 wLength)
2110 {
2111         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2112         int ret;
2113         int port = (wIndex & 0x00FF) - 1;
2114         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
2115         unsigned long flags;
2116
2117         ret = 0;
2118
2119         spin_lock_irqsave(&r8a66597->lock, flags);
2120         switch (typeReq) {
2121         case ClearHubFeature:
2122         case SetHubFeature:
2123                 switch (wValue) {
2124                 case C_HUB_OVER_CURRENT:
2125                 case C_HUB_LOCAL_POWER:
2126                         break;
2127                 default:
2128                         goto error;
2129                 }
2130                 break;
2131         case ClearPortFeature:
2132                 if (wIndex > R8A66597_MAX_ROOT_HUB)
2133                         goto error;
2134                 if (wLength != 0)
2135                         goto error;
2136
2137                 switch (wValue) {
2138                 case USB_PORT_FEAT_ENABLE:
2139                         rh->port &= ~(1 << USB_PORT_FEAT_POWER);
2140                         break;
2141                 case USB_PORT_FEAT_SUSPEND:
2142                         break;
2143                 case USB_PORT_FEAT_POWER:
2144                         r8a66597_port_power(r8a66597, port, 0);
2145                         break;
2146                 case USB_PORT_FEAT_C_ENABLE:
2147                 case USB_PORT_FEAT_C_SUSPEND:
2148                 case USB_PORT_FEAT_C_CONNECTION:
2149                 case USB_PORT_FEAT_C_OVER_CURRENT:
2150                 case USB_PORT_FEAT_C_RESET:
2151                         break;
2152                 default:
2153                         goto error;
2154                 }
2155                 rh->port &= ~(1 << wValue);
2156                 break;
2157         case GetHubDescriptor:
2158                 r8a66597_hub_descriptor(r8a66597,
2159                                         (struct usb_hub_descriptor *)buf);
2160                 break;
2161         case GetHubStatus:
2162                 *buf = 0x00;
2163                 break;
2164         case GetPortStatus:
2165                 if (wIndex > R8A66597_MAX_ROOT_HUB)
2166                         goto error;
2167                 *(__le32 *)buf = cpu_to_le32(rh->port);
2168                 break;
2169         case SetPortFeature:
2170                 if (wIndex > R8A66597_MAX_ROOT_HUB)
2171                         goto error;
2172                 if (wLength != 0)
2173                         goto error;
2174
2175                 switch (wValue) {
2176                 case USB_PORT_FEAT_SUSPEND:
2177                         break;
2178                 case USB_PORT_FEAT_POWER:
2179                         r8a66597_port_power(r8a66597, port, 1);
2180                         rh->port |= (1 << USB_PORT_FEAT_POWER);
2181                         break;
2182                 case USB_PORT_FEAT_RESET: {
2183                         struct r8a66597_device *dev = rh->dev;
2184
2185                         rh->port |= (1 << USB_PORT_FEAT_RESET);
2186
2187                         disable_r8a66597_pipe_all(r8a66597, dev);
2188                         free_usb_address(r8a66597, dev);
2189
2190                         r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT,
2191                                       get_dvstctr_reg(port));
2192                         mod_timer(&r8a66597->rh_timer,
2193                                   jiffies + msecs_to_jiffies(50));
2194                         }
2195                         break;
2196                 default:
2197                         goto error;
2198                 }
2199                 rh->port |= 1 << wValue;
2200                 break;
2201         default:
2202 error:
2203                 ret = -EPIPE;
2204                 break;
2205         }
2206
2207         spin_unlock_irqrestore(&r8a66597->lock, flags);
2208         return ret;
2209 }
2210
2211 #if defined(CONFIG_PM)
2212 static int r8a66597_bus_suspend(struct usb_hcd *hcd)
2213 {
2214         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2215         int port;
2216
2217         dbg("%s", __func__);
2218
2219         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++) {
2220                 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
2221                 unsigned long dvstctr_reg = get_dvstctr_reg(port);
2222
2223                 if (!(rh->port & (1 << USB_PORT_FEAT_ENABLE)))
2224                         continue;
2225
2226                 dbg("suspend port = %d", port);
2227                 r8a66597_bclr(r8a66597, UACT, dvstctr_reg);     /* suspend */
2228                 rh->port |= 1 << USB_PORT_FEAT_SUSPEND;
2229
2230                 if (rh->dev->udev->do_remote_wakeup) {
2231                         msleep(3);      /* waiting last SOF */
2232                         r8a66597_bset(r8a66597, RWUPE, dvstctr_reg);
2233                         r8a66597_write(r8a66597, ~BCHG, get_intsts_reg(port));
2234                         r8a66597_bset(r8a66597, BCHGE, get_intenb_reg(port));
2235                 }
2236         }
2237
2238         r8a66597->bus_suspended = 1;
2239
2240         return 0;
2241 }
2242
2243 static int r8a66597_bus_resume(struct usb_hcd *hcd)
2244 {
2245         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2246         int port;
2247
2248         dbg("%s", __func__);
2249
2250         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++) {
2251                 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
2252                 unsigned long dvstctr_reg = get_dvstctr_reg(port);
2253
2254                 if (!(rh->port & (1 << USB_PORT_FEAT_SUSPEND)))
2255                         continue;
2256
2257                 dbg("resume port = %d", port);
2258                 rh->port &= ~(1 << USB_PORT_FEAT_SUSPEND);
2259                 rh->port |= 1 << USB_PORT_FEAT_C_SUSPEND;
2260                 r8a66597_mdfy(r8a66597, RESUME, RESUME | UACT, dvstctr_reg);
2261                 msleep(50);
2262                 r8a66597_mdfy(r8a66597, UACT, RESUME | UACT, dvstctr_reg);
2263         }
2264
2265         return 0;
2266
2267 }
2268 #else
2269 #define r8a66597_bus_suspend    NULL
2270 #define r8a66597_bus_resume     NULL
2271 #endif
2272
2273 static struct hc_driver r8a66597_hc_driver = {
2274         .description =          hcd_name,
2275         .hcd_priv_size =        sizeof(struct r8a66597),
2276         .irq =                  r8a66597_irq,
2277
2278         /*
2279          * generic hardware linkage
2280          */
2281         .flags =                HCD_USB2,
2282
2283         .start =                r8a66597_start,
2284         .stop =                 r8a66597_stop,
2285
2286         /*
2287          * managing i/o requests and associated device resources
2288          */
2289         .urb_enqueue =          r8a66597_urb_enqueue,
2290         .urb_dequeue =          r8a66597_urb_dequeue,
2291         .endpoint_disable =     r8a66597_endpoint_disable,
2292
2293         /*
2294          * periodic schedule support
2295          */
2296         .get_frame_number =     r8a66597_get_frame,
2297
2298         /*
2299          * root hub support
2300          */
2301         .hub_status_data =      r8a66597_hub_status_data,
2302         .hub_control =          r8a66597_hub_control,
2303         .bus_suspend =          r8a66597_bus_suspend,
2304         .bus_resume =           r8a66597_bus_resume,
2305 };
2306
2307 #if defined(CONFIG_PM)
2308 static int r8a66597_suspend(struct platform_device *pdev, pm_message_t state)
2309 {
2310         struct r8a66597         *r8a66597 = dev_get_drvdata(&pdev->dev);
2311         int port;
2312
2313         dbg("%s", __func__);
2314
2315         disable_controller(r8a66597);
2316
2317         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++) {
2318                 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
2319
2320                 rh->port = 0x00000000;
2321         }
2322
2323         return 0;
2324 }
2325
2326 static int r8a66597_resume(struct platform_device *pdev)
2327 {
2328         struct r8a66597         *r8a66597 = dev_get_drvdata(&pdev->dev);
2329         struct usb_hcd          *hcd = r8a66597_to_hcd(r8a66597);
2330
2331         dbg("%s", __func__);
2332
2333         enable_controller(r8a66597);
2334         usb_root_hub_lost_power(hcd->self.root_hub);
2335
2336         return 0;
2337 }
2338 #else   /* if defined(CONFIG_PM) */
2339 #define r8a66597_suspend        NULL
2340 #define r8a66597_resume         NULL
2341 #endif
2342
2343 static int __init_or_module r8a66597_remove(struct platform_device *pdev)
2344 {
2345         struct r8a66597         *r8a66597 = dev_get_drvdata(&pdev->dev);
2346         struct usb_hcd          *hcd = r8a66597_to_hcd(r8a66597);
2347
2348         del_timer_sync(&r8a66597->rh_timer);
2349         usb_remove_hcd(hcd);
2350         iounmap((void *)r8a66597->reg);
2351 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) && defined(CONFIG_HAVE_CLK)
2352         clk_put(r8a66597->clk);
2353 #endif
2354         usb_put_hcd(hcd);
2355         return 0;
2356 }
2357
2358 static int __devinit r8a66597_probe(struct platform_device *pdev)
2359 {
2360 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) && defined(CONFIG_HAVE_CLK)
2361         char clk_name[8];
2362 #endif
2363         struct resource *res = NULL, *ires;
2364         int irq = -1;
2365         void __iomem *reg = NULL;
2366         struct usb_hcd *hcd = NULL;
2367         struct r8a66597 *r8a66597;
2368         int ret = 0;
2369         int i;
2370         unsigned long irq_trigger;
2371
2372         if (pdev->dev.dma_mask) {
2373                 ret = -EINVAL;
2374                 dev_err(&pdev->dev, "dma not supported\n");
2375                 goto clean_up;
2376         }
2377
2378         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2379         if (!res) {
2380                 ret = -ENODEV;
2381                 dev_err(&pdev->dev, "platform_get_resource error.\n");
2382                 goto clean_up;
2383         }
2384
2385         ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
2386         if (!ires) {
2387                 ret = -ENODEV;
2388                 dev_err(&pdev->dev,
2389                         "platform_get_resource IORESOURCE_IRQ error.\n");
2390                 goto clean_up;
2391         }
2392
2393         irq = ires->start;
2394         irq_trigger = ires->flags & IRQF_TRIGGER_MASK;
2395
2396         reg = ioremap(res->start, resource_size(res));
2397         if (reg == NULL) {
2398                 ret = -ENOMEM;
2399                 dev_err(&pdev->dev, "ioremap error.\n");
2400                 goto clean_up;
2401         }
2402
2403         if (pdev->dev.platform_data == NULL) {
2404                 dev_err(&pdev->dev, "no platform data\n");
2405                 ret = -ENODEV;
2406                 goto clean_up;
2407         }
2408
2409         /* initialize hcd */
2410         hcd = usb_create_hcd(&r8a66597_hc_driver, &pdev->dev, (char *)hcd_name);
2411         if (!hcd) {
2412                 ret = -ENOMEM;
2413                 dev_err(&pdev->dev, "Failed to create hcd\n");
2414                 goto clean_up;
2415         }
2416         r8a66597 = hcd_to_r8a66597(hcd);
2417         memset(r8a66597, 0, sizeof(struct r8a66597));
2418         dev_set_drvdata(&pdev->dev, r8a66597);
2419         r8a66597->pdata = pdev->dev.platform_data;
2420         r8a66597->irq_sense_low = irq_trigger == IRQF_TRIGGER_LOW;
2421
2422 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) && defined(CONFIG_HAVE_CLK)
2423         snprintf(clk_name, sizeof(clk_name), "usb%d", pdev->id);
2424         r8a66597->clk = clk_get(&pdev->dev, clk_name);
2425         if (IS_ERR(r8a66597->clk)) {
2426                 dev_err(&pdev->dev, "cannot get clock \"%s\"\n", clk_name);
2427                 ret = PTR_ERR(r8a66597->clk);
2428                 goto clean_up2;
2429         }
2430 #endif
2431
2432         spin_lock_init(&r8a66597->lock);
2433         init_timer(&r8a66597->rh_timer);
2434         r8a66597->rh_timer.function = r8a66597_timer;
2435         r8a66597->rh_timer.data = (unsigned long)r8a66597;
2436         r8a66597->reg = (unsigned long)reg;
2437
2438         for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) {
2439                 INIT_LIST_HEAD(&r8a66597->pipe_queue[i]);
2440                 init_timer(&r8a66597->td_timer[i]);
2441                 r8a66597->td_timer[i].function = r8a66597_td_timer;
2442                 r8a66597->td_timer[i].data = (unsigned long)r8a66597;
2443                 setup_timer(&r8a66597->interval_timer[i],
2444                                 r8a66597_interval_timer,
2445                                 (unsigned long)r8a66597);
2446         }
2447         INIT_LIST_HEAD(&r8a66597->child_device);
2448
2449         hcd->rsrc_start = res->start;
2450
2451         ret = usb_add_hcd(hcd, irq, IRQF_DISABLED | irq_trigger);
2452         if (ret != 0) {
2453                 dev_err(&pdev->dev, "Failed to add hcd\n");
2454                 goto clean_up3;
2455         }
2456
2457         return 0;
2458
2459 clean_up3:
2460 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) && defined(CONFIG_HAVE_CLK)
2461         clk_put(r8a66597->clk);
2462 clean_up2:
2463 #endif
2464         usb_put_hcd(hcd);
2465
2466 clean_up:
2467         if (reg)
2468                 iounmap(reg);
2469
2470         return ret;
2471 }
2472
2473 static struct platform_driver r8a66597_driver = {
2474         .probe =        r8a66597_probe,
2475         .remove =       r8a66597_remove,
2476         .suspend =      r8a66597_suspend,
2477         .resume =       r8a66597_resume,
2478         .driver         = {
2479                 .name = (char *) hcd_name,
2480                 .owner  = THIS_MODULE,
2481         },
2482 };
2483
2484 static int __init r8a66597_init(void)
2485 {
2486         if (usb_disabled())
2487                 return -ENODEV;
2488
2489         printk(KERN_INFO KBUILD_MODNAME ": driver %s, %s\n", hcd_name,
2490                DRIVER_VERSION);
2491         return platform_driver_register(&r8a66597_driver);
2492 }
2493 module_init(r8a66597_init);
2494
2495 static void __exit r8a66597_cleanup(void)
2496 {
2497         platform_driver_unregister(&r8a66597_driver);
2498 }
2499 module_exit(r8a66597_cleanup);
2500