git.oblomov.eu Git - linux-2.6/blob - drivers/usb/host/r8a66597-hcd.c

   1 /*
   2  * R8A66597 HCD (Host Controller Driver)
   3  *
   4  * Copyright (C) 2006-2007 Renesas Solutions Corp.
   5  * Portions Copyright (C) 2004 Psion Teklogix (for NetBook PRO)
   6  * Portions Copyright (C) 2004-2005 David Brownell
   7  * Portions Copyright (C) 1999 Roman Weissgaerber
   8  *
   9  * Author : Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; version 2 of the License.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  23  *
  24  */
  25
  26 #include <linux/module.h>
  27 #include <linux/kernel.h>
  28 #include <linux/sched.h>
  29 #include <linux/smp_lock.h>
  30 #include <linux/errno.h>
  31 #include <linux/init.h>
  32 #include <linux/timer.h>
  33 #include <linux/delay.h>
  34 #include <linux/list.h>
  35 #include <linux/interrupt.h>
  36 #include <linux/usb.h>
  37 #include <linux/platform_device.h>
  38 #include <linux/io.h>
  39 #include <linux/irq.h>
  40
  41 #include "../core/hcd.h"
  42 #include "r8a66597.h"
  43
  44 MODULE_DESCRIPTION("R8A66597 USB Host Controller Driver");
  45 MODULE_LICENSE("GPL");
  46 MODULE_AUTHOR("Yoshihiro Shimoda");
  47 MODULE_ALIAS("platform:r8a66597_hcd");
  48
  49 #define DRIVER_VERSION  "10 Apr 2008"
  50
  51 static const char hcd_name[] = "r8a66597_hcd";
  52
  53 /* module parameters */
  54 #if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
  55 static unsigned short clock = XTAL12;
  56 module_param(clock, ushort, 0644);
  57 MODULE_PARM_DESC(clock, "input clock: 48MHz=32768, 24MHz=16384, 12MHz=0 "
  58                 "(default=0)");
  59 #endif
  60
  61 static unsigned short vif = LDRV;
  62 module_param(vif, ushort, 0644);
  63 MODULE_PARM_DESC(vif, "input VIF: 3.3V=32768, 1.5V=0(default=32768)");
  64
  65 static unsigned short endian;
  66 module_param(endian, ushort, 0644);
  67 MODULE_PARM_DESC(endian, "data endian: big=256, little=0 (default=0)");
  68
  69 static unsigned short irq_sense = 0xff;
  70 module_param(irq_sense, ushort, 0644);
  71 MODULE_PARM_DESC(irq_sense, "IRQ sense: low level=32, falling edge=0 "
  72                 "(default=32)");
  73
  74 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum);
  75 static int r8a66597_get_frame(struct usb_hcd *hcd);
  76
  77 /* this function must be called with interrupt disabled */
  78 static void enable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
  79                             unsigned long reg)
  80 {
  81         u16 tmp;
  82
  83         tmp = r8a66597_read(r8a66597, INTENB0);
  84         r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
  85         r8a66597_bset(r8a66597, 1 << pipenum, reg);
  86         r8a66597_write(r8a66597, tmp, INTENB0);
  87 }
  88
  89 /* this function must be called with interrupt disabled */
  90 static void disable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
  91                              unsigned long reg)
  92 {
  93         u16 tmp;
  94
  95         tmp = r8a66597_read(r8a66597, INTENB0);
  96         r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
  97         r8a66597_bclr(r8a66597, 1 << pipenum, reg);
  98         r8a66597_write(r8a66597, tmp, INTENB0);
  99 }
 100
 101 static void set_devadd_reg(struct r8a66597 *r8a66597, u8 r8a66597_address,
 102                            u16 usbspd, u8 upphub, u8 hubport, int port)
 103 {
 104         u16 val;
 105         unsigned long devadd_reg = get_devadd_addr(r8a66597_address);
 106
 107         val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001);
 108         r8a66597_write(r8a66597, val, devadd_reg);
 109 }
 110
 111 static int r8a66597_clock_enable(struct r8a66597 *r8a66597)
 112 {
 113         u16 tmp;
 114         int i = 0;
 115
 116 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
 117 #if defined(CONFIG_HAVE_CLK)
 118         clk_enable(r8a66597->clk);
 119 #endif
 120         do {
 121                 r8a66597_write(r8a66597, SCKE, SYSCFG0);
 122                 tmp = r8a66597_read(r8a66597, SYSCFG0);
 123                 if (i++ > 1000) {
 124                         printk(KERN_ERR "r8a66597: register access fail.\n");
 125                         return -ENXIO;
 126                 }
 127         } while ((tmp & SCKE) != SCKE);
 128         r8a66597_write(r8a66597, 0x04, 0x02);
 129 #else
 130         do {
 131                 r8a66597_write(r8a66597, USBE, SYSCFG0);
 132                 tmp = r8a66597_read(r8a66597, SYSCFG0);
 133                 if (i++ > 1000) {
 134                         printk(KERN_ERR "r8a66597: register access fail.\n");
 135                         return -ENXIO;
 136                 }
 137         } while ((tmp & USBE) != USBE);
 138         r8a66597_bclr(r8a66597, USBE, SYSCFG0);
 139         r8a66597_mdfy(r8a66597, clock, XTAL, SYSCFG0);
 140
 141         i = 0;
 142         r8a66597_bset(r8a66597, XCKE, SYSCFG0);
 143         do {
 144                 msleep(1);
 145                 tmp = r8a66597_read(r8a66597, SYSCFG0);
 146                 if (i++ > 500) {
 147                         printk(KERN_ERR "r8a66597: register access fail.\n");
 148                         return -ENXIO;
 149                 }
 150         } while ((tmp & SCKE) != SCKE);
 151 #endif  /* #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) */
 152
 153         return 0;
 154 }
 155
 156 static void r8a66597_clock_disable(struct r8a66597 *r8a66597)
 157 {
 158         r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
 159         udelay(1);
 160 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
 161 #if defined(CONFIG_HAVE_CLK)
 162         clk_disable(r8a66597->clk);
 163 #endif
 164 #else
 165         r8a66597_bclr(r8a66597, PLLC, SYSCFG0);
 166         r8a66597_bclr(r8a66597, XCKE, SYSCFG0);
 167         r8a66597_bclr(r8a66597, USBE, SYSCFG0);
 168 #endif
 169 }
 170
 171 static void r8a66597_enable_port(struct r8a66597 *r8a66597, int port)
 172 {
 173         u16 val;
 174
 175         val = port ? DRPD : DCFM | DRPD;
 176         r8a66597_bset(r8a66597, val, get_syscfg_reg(port));
 177         r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port));
 178
 179         r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, get_dmacfg_reg(port));
 180         r8a66597_bclr(r8a66597, DTCHE, get_intenb_reg(port));
 181         r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
 182 }
 183
 184 static void r8a66597_disable_port(struct r8a66597 *r8a66597, int port)
 185 {
 186         u16 val, tmp;
 187
 188         r8a66597_write(r8a66597, 0, get_intenb_reg(port));
 189         r8a66597_write(r8a66597, 0, get_intsts_reg(port));
 190
 191         r8a66597_port_power(r8a66597, port, 0);
 192
 193         do {
 194                 tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS;
 195                 udelay(640);
 196         } while (tmp == EDGESTS);
 197
 198         val = port ? DRPD : DCFM | DRPD;
 199         r8a66597_bclr(r8a66597, val, get_syscfg_reg(port));
 200         r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port));
 201 }
 202
 203 static int enable_controller(struct r8a66597 *r8a66597)
 204 {
 205         int ret, port;
 206
 207         ret = r8a66597_clock_enable(r8a66597);
 208         if (ret < 0)
 209                 return ret;
 210
 211         r8a66597_bset(r8a66597, vif & LDRV, PINCFG);
 212         r8a66597_bset(r8a66597, USBE, SYSCFG0);
 213
 214         r8a66597_bset(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
 215         r8a66597_bset(r8a66597, irq_sense & INTL, SOFCFG);
 216         r8a66597_bset(r8a66597, BRDY0, BRDYENB);
 217         r8a66597_bset(r8a66597, BEMP0, BEMPENB);
 218
 219         r8a66597_bset(r8a66597, endian & BIGEND, CFIFOSEL);
 220         r8a66597_bset(r8a66597, endian & BIGEND, D0FIFOSEL);
 221         r8a66597_bset(r8a66597, endian & BIGEND, D1FIFOSEL);
 222         r8a66597_bset(r8a66597, TRNENSEL, SOFCFG);
 223
 224         r8a66597_bset(r8a66597, SIGNE | SACKE, INTENB1);
 225
 226         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
 227                 r8a66597_enable_port(r8a66597, port);
 228
 229         return 0;
 230 }
 231
 232 static void disable_controller(struct r8a66597 *r8a66597)
 233 {
 234         int port;
 235
 236         r8a66597_write(r8a66597, 0, INTENB0);
 237         r8a66597_write(r8a66597, 0, INTSTS0);
 238
 239         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
 240                 r8a66597_disable_port(r8a66597, port);
 241
 242         r8a66597_clock_disable(r8a66597);
 243 }
 244
 245 static int get_parent_r8a66597_address(struct r8a66597 *r8a66597,
 246                                        struct usb_device *udev)
 247 {
 248         struct r8a66597_device *dev;
 249
 250         if (udev->parent && udev->parent->devnum != 1)
 251                 udev = udev->parent;
 252
 253         dev = dev_get_drvdata(&udev->dev);
 254         if (dev)
 255                 return dev->address;
 256         else
 257                 return 0;
 258 }
 259
 260 static int is_child_device(char *devpath)
 261 {
 262         return (devpath[2] ? 1 : 0);
 263 }
 264
 265 static int is_hub_limit(char *devpath)
 266 {
 267         return ((strlen(devpath) >= 4) ? 1 : 0);
 268 }
 269
 270 static void get_port_number(char *devpath, u16 *root_port, u16 *hub_port)
 271 {
 272         if (root_port) {
 273                 *root_port = (devpath[0] & 0x0F) - 1;
 274                 if (*root_port >= R8A66597_MAX_ROOT_HUB)
 275                         printk(KERN_ERR "r8a66597: Illegal root port number.\n");
 276         }
 277         if (hub_port)
 278                 *hub_port = devpath[2] & 0x0F;
 279 }
 280
 281 static u16 get_r8a66597_usb_speed(enum usb_device_speed speed)
 282 {
 283         u16 usbspd = 0;
 284
 285         switch (speed) {
 286         case USB_SPEED_LOW:
 287                 usbspd = LSMODE;
 288                 break;
 289         case USB_SPEED_FULL:
 290                 usbspd = FSMODE;
 291                 break;
 292         case USB_SPEED_HIGH:
 293                 usbspd = HSMODE;
 294                 break;
 295         default:
 296                 printk(KERN_ERR "r8a66597: unknown speed\n");
 297                 break;
 298         }
 299
 300         return usbspd;
 301 }
 302
 303 static void set_child_connect_map(struct r8a66597 *r8a66597, int address)
 304 {
 305         int idx;
 306
 307         idx = address / 32;
 308         r8a66597->child_connect_map[idx] |= 1 << (address % 32);
 309 }
 310
 311 static void put_child_connect_map(struct r8a66597 *r8a66597, int address)
 312 {
 313         int idx;
 314
 315         idx = address / 32;
 316         r8a66597->child_connect_map[idx] &= ~(1 << (address % 32));
 317 }
 318
 319 static void set_pipe_reg_addr(struct r8a66597_pipe *pipe, u8 dma_ch)
 320 {
 321         u16 pipenum = pipe->info.pipenum;
 322         const unsigned long fifoaddr[] = {D0FIFO, D1FIFO, CFIFO};
 323         const unsigned long fifosel[] = {D0FIFOSEL, D1FIFOSEL, CFIFOSEL};
 324         const unsigned long fifoctr[] = {D0FIFOCTR, D1FIFOCTR, CFIFOCTR};
 325
 326         if (dma_ch > R8A66597_PIPE_NO_DMA)      /* dma fifo not use? */
 327                 dma_ch = R8A66597_PIPE_NO_DMA;
 328
 329         pipe->fifoaddr = fifoaddr[dma_ch];
 330         pipe->fifosel = fifosel[dma_ch];
 331         pipe->fifoctr = fifoctr[dma_ch];
 332
 333         if (pipenum == 0)
 334                 pipe->pipectr = DCPCTR;
 335         else
 336                 pipe->pipectr = get_pipectr_addr(pipenum);
 337
 338         if (check_bulk_or_isoc(pipenum)) {
 339                 pipe->pipetre = get_pipetre_addr(pipenum);
 340                 pipe->pipetrn = get_pipetrn_addr(pipenum);
 341         } else {
 342                 pipe->pipetre = 0;
 343                 pipe->pipetrn = 0;
 344         }
 345 }
 346
 347 static struct r8a66597_device *
 348 get_urb_to_r8a66597_dev(struct r8a66597 *r8a66597, struct urb *urb)
 349 {
 350         if (usb_pipedevice(urb->pipe) == 0)
 351                 return &r8a66597->device0;
 352
 353         return dev_get_drvdata(&urb->dev->dev);
 354 }
 355
 356 static int make_r8a66597_device(struct r8a66597 *r8a66597,
 357                                 struct urb *urb, u8 addr)
 358 {
 359         struct r8a66597_device *dev;
 360         int usb_address = urb->setup_packet[2]; /* urb->pipe is address 0 */
 361
 362         dev = kzalloc(sizeof(struct r8a66597_device), GFP_ATOMIC);
 363         if (dev == NULL)
 364                 return -ENOMEM;
 365
 366         dev_set_drvdata(&urb->dev->dev, dev);
 367         dev->udev = urb->dev;
 368         dev->address = addr;
 369         dev->usb_address = usb_address;
 370         dev->state = USB_STATE_ADDRESS;
 371         dev->ep_in_toggle = 0;
 372         dev->ep_out_toggle = 0;
 373         INIT_LIST_HEAD(&dev->device_list);
 374         list_add_tail(&dev->device_list, &r8a66597->child_device);
 375
 376         get_port_number(urb->dev->devpath, &dev->root_port, &dev->hub_port);
 377         if (!is_child_device(urb->dev->devpath))
 378                 r8a66597->root_hub[dev->root_port].dev = dev;
 379
 380         set_devadd_reg(r8a66597, dev->address,
 381                        get_r8a66597_usb_speed(urb->dev->speed),
 382                        get_parent_r8a66597_address(r8a66597, urb->dev),
 383                        dev->hub_port, dev->root_port);
 384
 385         return 0;
 386 }
 387
 388 /* this function must be called with interrupt disabled */
 389 static u8 alloc_usb_address(struct r8a66597 *r8a66597, struct urb *urb)
 390 {
 391         u8 addr;        /* R8A66597's address */
 392         struct r8a66597_device *dev;
 393
 394         if (is_hub_limit(urb->dev->devpath)) {
 395                 dev_err(&urb->dev->dev, "External hub limit reached.\n");
 396                 return 0;
 397         }
 398
 399         dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 400         if (dev && dev->state >= USB_STATE_ADDRESS)
 401                 return dev->address;
 402
 403         for (addr = 1; addr <= R8A66597_MAX_DEVICE; addr++) {
 404                 if (r8a66597->address_map & (1 << addr))
 405                         continue;
 406
 407                 dbg("alloc_address: r8a66597_addr=%d", addr);
 408                 r8a66597->address_map |= 1 << addr;
 409
 410                 if (make_r8a66597_device(r8a66597, urb, addr) < 0)
 411                         return 0;
 412
 413                 return addr;
 414         }
 415
 416         dev_err(&urb->dev->dev,
 417                 "cannot communicate with a USB device more than 10.(%x)\n",
 418                 r8a66597->address_map);
 419
 420         return 0;
 421 }
 422
 423 /* this function must be called with interrupt disabled */
 424 static void free_usb_address(struct r8a66597 *r8a66597,
 425                              struct r8a66597_device *dev)
 426 {
 427         int port;
 428
 429         if (!dev)
 430                 return;
 431
 432         dbg("free_addr: addr=%d", dev->address);
 433
 434         dev->state = USB_STATE_DEFAULT;
 435         r8a66597->address_map &= ~(1 << dev->address);
 436         dev->address = 0;
 437         dev_set_drvdata(&dev->udev->dev, NULL);
 438         list_del(&dev->device_list);
 439         kfree(dev);
 440
 441         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++) {
 442                 if (r8a66597->root_hub[port].dev == dev) {
 443                         r8a66597->root_hub[port].dev = NULL;
 444                         break;
 445                 }
 446         }
 447 }
 448
 449 static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg,
 450                               u16 mask, u16 loop)
 451 {
 452         u16 tmp;
 453         int i = 0;
 454
 455         do {
 456                 tmp = r8a66597_read(r8a66597, reg);
 457                 if (i++ > 1000000) {
 458                         printk(KERN_ERR "r8a66597: register%lx, loop %x "
 459                                "is timeout\n", reg, loop);
 460                         break;
 461                 }
 462                 ndelay(1);
 463         } while ((tmp & mask) != loop);
 464 }
 465
 466 /* this function must be called with interrupt disabled */
 467 static void pipe_start(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
 468 {
 469         u16 tmp;
 470
 471         tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
 472         if ((pipe->info.pipenum != 0) & ((tmp & PID_STALL) != 0)) /* stall? */
 473                 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
 474         r8a66597_mdfy(r8a66597, PID_BUF, PID, pipe->pipectr);
 475 }
 476
 477 /* this function must be called with interrupt disabled */
 478 static void pipe_stop(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
 479 {
 480         u16 tmp;
 481
 482         tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
 483         if ((tmp & PID_STALL11) != PID_STALL11) /* force stall? */
 484                 r8a66597_mdfy(r8a66597, PID_STALL, PID, pipe->pipectr);
 485         r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
 486         r8a66597_reg_wait(r8a66597, pipe->pipectr, PBUSY, 0);
 487 }
 488
 489 /* this function must be called with interrupt disabled */
 490 static void clear_all_buffer(struct r8a66597 *r8a66597,
 491                              struct r8a66597_pipe *pipe)
 492 {
 493         u16 tmp;
 494
 495         if (!pipe || pipe->info.pipenum == 0)
 496                 return;
 497
 498         pipe_stop(r8a66597, pipe);
 499         r8a66597_bset(r8a66597, ACLRM, pipe->pipectr);
 500         tmp = r8a66597_read(r8a66597, pipe->pipectr);
 501         tmp = r8a66597_read(r8a66597, pipe->pipectr);
 502         tmp = r8a66597_read(r8a66597, pipe->pipectr);
 503         r8a66597_bclr(r8a66597, ACLRM, pipe->pipectr);
 504 }
 505
 506 /* this function must be called with interrupt disabled */
 507 static void r8a66597_pipe_toggle(struct r8a66597 *r8a66597,
 508                                  struct r8a66597_pipe *pipe, int toggle)
 509 {
 510         if (toggle)
 511                 r8a66597_bset(r8a66597, SQSET, pipe->pipectr);
 512         else
 513                 r8a66597_bset(r8a66597, SQCLR, pipe->pipectr);
 514 }
 515
 516 /* this function must be called with interrupt disabled */
 517 static inline void cfifo_change(struct r8a66597 *r8a66597, u16 pipenum)
 518 {
 519         r8a66597_mdfy(r8a66597, MBW | pipenum, MBW | CURPIPE, CFIFOSEL);
 520         r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, pipenum);
 521 }
 522
 523 /* this function must be called with interrupt disabled */
 524 static inline void fifo_change_from_pipe(struct r8a66597 *r8a66597,
 525                                          struct r8a66597_pipe *pipe)
 526 {
 527         cfifo_change(r8a66597, 0);
 528         r8a66597_mdfy(r8a66597, MBW | 0, MBW | CURPIPE, D0FIFOSEL);
 529         r8a66597_mdfy(r8a66597, MBW | 0, MBW | CURPIPE, D1FIFOSEL);
 530
 531         r8a66597_mdfy(r8a66597, MBW | pipe->info.pipenum, MBW | CURPIPE,
 532                       pipe->fifosel);
 533         r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, pipe->info.pipenum);
 534 }
 535
 536 static u16 r8a66597_get_pipenum(struct urb *urb, struct usb_host_endpoint *hep)
 537 {
 538         struct r8a66597_pipe *pipe = hep->hcpriv;
 539
 540         if (usb_pipeendpoint(urb->pipe) == 0)
 541                 return 0;
 542         else
 543                 return pipe->info.pipenum;
 544 }
 545
 546 static u16 get_urb_to_r8a66597_addr(struct r8a66597 *r8a66597, struct urb *urb)
 547 {
 548         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 549
 550         return (usb_pipedevice(urb->pipe) == 0) ? 0 : dev->address;
 551 }
 552
 553 static unsigned short *get_toggle_pointer(struct r8a66597_device *dev,
 554                                           int urb_pipe)
 555 {
 556         if (!dev)
 557                 return NULL;
 558
 559         return usb_pipein(urb_pipe) ? &dev->ep_in_toggle : &dev->ep_out_toggle;
 560 }
 561
 562 /* this function must be called with interrupt disabled */
 563 static void pipe_toggle_set(struct r8a66597 *r8a66597,
 564                             struct r8a66597_pipe *pipe,
 565                             struct urb *urb, int set)
 566 {
 567         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 568         unsigned char endpoint = usb_pipeendpoint(urb->pipe);
 569         unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
 570
 571         if (!toggle)
 572                 return;
 573
 574         if (set)
 575                 *toggle |= 1 << endpoint;
 576         else
 577                 *toggle &= ~(1 << endpoint);
 578 }
 579
 580 /* this function must be called with interrupt disabled */
 581 static void pipe_toggle_save(struct r8a66597 *r8a66597,
 582                              struct r8a66597_pipe *pipe,
 583                              struct urb *urb)
 584 {
 585         if (r8a66597_read(r8a66597, pipe->pipectr) & SQMON)
 586                 pipe_toggle_set(r8a66597, pipe, urb, 1);
 587         else
 588                 pipe_toggle_set(r8a66597, pipe, urb, 0);
 589 }
 590
 591 /* this function must be called with interrupt disabled */
 592 static void pipe_toggle_restore(struct r8a66597 *r8a66597,
 593                                 struct r8a66597_pipe *pipe,
 594                                 struct urb *urb)
 595 {
 596         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 597         unsigned char endpoint = usb_pipeendpoint(urb->pipe);
 598         unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
 599
 600         if (!toggle)
 601                 return;
 602
 603         r8a66597_pipe_toggle(r8a66597, pipe, *toggle & (1 << endpoint));
 604 }
 605
 606 /* this function must be called with interrupt disabled */
 607 static void pipe_buffer_setting(struct r8a66597 *r8a66597,
 608                                 struct r8a66597_pipe_info *info)
 609 {
 610         u16 val = 0;
 611
 612         if (info->pipenum == 0)
 613                 return;
 614
 615         r8a66597_bset(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
 616         r8a66597_bclr(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
 617         r8a66597_write(r8a66597, info->pipenum, PIPESEL);
 618         if (!info->dir_in)
 619                 val |= R8A66597_DIR;
 620         if (info->type == R8A66597_BULK && info->dir_in)
 621                 val |= R8A66597_DBLB | R8A66597_SHTNAK;
 622         val |= info->type | info->epnum;
 623         r8a66597_write(r8a66597, val, PIPECFG);
 624
 625         r8a66597_write(r8a66597, (info->buf_bsize << 10) | (info->bufnum),
 626                        PIPEBUF);
 627         r8a66597_write(r8a66597, make_devsel(info->address) | info->maxpacket,
 628                        PIPEMAXP);
 629         r8a66597_write(r8a66597, info->interval, PIPEPERI);
 630 }
 631
 632 /* this function must be called with interrupt disabled */
 633 static void pipe_setting(struct r8a66597 *r8a66597, struct r8a66597_td *td)
 634 {
 635         struct r8a66597_pipe_info *info;
 636         struct urb *urb = td->urb;
 637
 638         if (td->pipenum > 0) {
 639                 info = &td->pipe->info;
 640                 cfifo_change(r8a66597, 0);
 641                 pipe_buffer_setting(r8a66597, info);
 642
 643                 if (!usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe),
 644                                    usb_pipeout(urb->pipe)) &&
 645                     !usb_pipecontrol(urb->pipe)) {
 646                         r8a66597_pipe_toggle(r8a66597, td->pipe, 0);
 647                         pipe_toggle_set(r8a66597, td->pipe, urb, 0);
 648                         clear_all_buffer(r8a66597, td->pipe);
 649                         usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
 650                                       usb_pipeout(urb->pipe), 1);
 651                 }
 652                 pipe_toggle_restore(r8a66597, td->pipe, urb);
 653         }
 654 }
 655
 656 /* this function must be called with interrupt disabled */
 657 static u16 get_empty_pipenum(struct r8a66597 *r8a66597,
 658                              struct usb_endpoint_descriptor *ep)
 659 {
 660         u16 array[R8A66597_MAX_NUM_PIPE], i = 0, min;
 661
 662         memset(array, 0, sizeof(array));
 663         switch (usb_endpoint_type(ep)) {
 664         case USB_ENDPOINT_XFER_BULK:
 665                 if (usb_endpoint_dir_in(ep))
 666                         array[i++] = 4;
 667                 else {
 668                         array[i++] = 3;
 669                         array[i++] = 5;
 670                 }
 671                 break;
 672         case USB_ENDPOINT_XFER_INT:
 673                 if (usb_endpoint_dir_in(ep)) {
 674                         array[i++] = 6;
 675                         array[i++] = 7;
 676                         array[i++] = 8;
 677                 } else
 678                         array[i++] = 9;
 679                 break;
 680         case USB_ENDPOINT_XFER_ISOC:
 681                 if (usb_endpoint_dir_in(ep))
 682                         array[i++] = 2;
 683                 else
 684                         array[i++] = 1;
 685                 break;
 686         default:
 687                 printk(KERN_ERR "r8a66597: Illegal type\n");
 688                 return 0;
 689         }
 690
 691         i = 1;
 692         min = array[0];
 693         while (array[i] != 0) {
 694                 if (r8a66597->pipe_cnt[min] > r8a66597->pipe_cnt[array[i]])
 695                         min = array[i];
 696                 i++;
 697         }
 698
 699         return min;
 700 }
 701
 702 static u16 get_r8a66597_type(__u8 type)
 703 {
 704         u16 r8a66597_type;
 705
 706         switch (type) {
 707         case USB_ENDPOINT_XFER_BULK:
 708                 r8a66597_type = R8A66597_BULK;
 709                 break;
 710         case USB_ENDPOINT_XFER_INT:
 711                 r8a66597_type = R8A66597_INT;
 712                 break;
 713         case USB_ENDPOINT_XFER_ISOC:
 714                 r8a66597_type = R8A66597_ISO;
 715                 break;
 716         default:
 717                 printk(KERN_ERR "r8a66597: Illegal type\n");
 718                 r8a66597_type = 0x0000;
 719                 break;
 720         }
 721
 722         return r8a66597_type;
 723 }
 724
 725 static u16 get_bufnum(u16 pipenum)
 726 {
 727         u16 bufnum = 0;
 728
 729         if (pipenum == 0)
 730                 bufnum = 0;
 731         else if (check_bulk_or_isoc(pipenum))
 732                 bufnum = 8 + (pipenum - 1) * R8A66597_BUF_BSIZE*2;
 733         else if (check_interrupt(pipenum))
 734                 bufnum = 4 + (pipenum - 6);
 735         else
 736                 printk(KERN_ERR "r8a66597: Illegal pipenum (%d)\n", pipenum);
 737
 738         return bufnum;
 739 }
 740
 741 static u16 get_buf_bsize(u16 pipenum)
 742 {
 743         u16 buf_bsize = 0;
 744
 745         if (pipenum == 0)
 746                 buf_bsize = 3;
 747         else if (check_bulk_or_isoc(pipenum))
 748                 buf_bsize = R8A66597_BUF_BSIZE - 1;
 749         else if (check_interrupt(pipenum))
 750                 buf_bsize = 0;
 751         else
 752                 printk(KERN_ERR "r8a66597: Illegal pipenum (%d)\n", pipenum);
 753
 754         return buf_bsize;
 755 }
 756
 757 /* this function must be called with interrupt disabled */
 758 static void enable_r8a66597_pipe_dma(struct r8a66597 *r8a66597,
 759                                      struct r8a66597_device *dev,
 760                                      struct r8a66597_pipe *pipe,
 761                                      struct urb *urb)
 762 {
 763 #if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
 764         int i;
 765         struct r8a66597_pipe_info *info = &pipe->info;
 766
 767         if ((pipe->info.pipenum != 0) && (info->type != R8A66597_INT)) {
 768                 for (i = 0; i < R8A66597_MAX_DMA_CHANNEL; i++) {
 769                         if ((r8a66597->dma_map & (1 << i)) != 0)
 770                                 continue;
 771
 772                         dev_info(&dev->udev->dev,
 773                                  "address %d, EndpointAddress 0x%02x use "
 774                                  "DMA FIFO\n", usb_pipedevice(urb->pipe),
 775                                  info->dir_in ?
 776                                         USB_ENDPOINT_DIR_MASK + info->epnum
 777                                         : info->epnum);
 778
 779                         r8a66597->dma_map |= 1 << i;
 780                         dev->dma_map |= 1 << i;
 781                         set_pipe_reg_addr(pipe, i);
 782
 783                         cfifo_change(r8a66597, 0);
 784                         r8a66597_mdfy(r8a66597, MBW | pipe->info.pipenum,
 785                                       MBW | CURPIPE, pipe->fifosel);
 786
 787                         r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE,
 788                                           pipe->info.pipenum);
 789                         r8a66597_bset(r8a66597, BCLR, pipe->fifoctr);
 790                         break;
 791                 }
 792         }
 793 #endif  /* #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) */
 794 }
 795
 796 /* this function must be called with interrupt disabled */
 797 static void enable_r8a66597_pipe(struct r8a66597 *r8a66597, struct urb *urb,
 798                                  struct usb_host_endpoint *hep,
 799                                  struct r8a66597_pipe_info *info)
 800 {
 801         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 802         struct r8a66597_pipe *pipe = hep->hcpriv;
 803
 804         dbg("enable_pipe:");
 805
 806         pipe->info = *info;
 807         set_pipe_reg_addr(pipe, R8A66597_PIPE_NO_DMA);
 808         r8a66597->pipe_cnt[pipe->info.pipenum]++;
 809         dev->pipe_cnt[pipe->info.pipenum]++;
 810
 811         enable_r8a66597_pipe_dma(r8a66597, dev, pipe, urb);
 812 }
 813
 814 /* this function must be called with interrupt disabled */
 815 static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address)
 816 {
 817         struct r8a66597_td *td, *next;
 818         struct urb *urb;
 819         struct list_head *list = &r8a66597->pipe_queue[pipenum];
 820
 821         if (list_empty(list))
 822                 return;
 823
 824         list_for_each_entry_safe(td, next, list, queue) {
 825                 if (!td)
 826                         continue;
 827                 if (td->address != address)
 828                         continue;
 829
 830                 urb = td->urb;
 831                 list_del(&td->queue);
 832                 kfree(td);
 833
 834                 if (urb) {
 835                         usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597),
 836                                         urb);
 837
 838                         spin_unlock(&r8a66597->lock);
 839                         usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb,
 840                                         -ENODEV);
 841                         spin_lock(&r8a66597->lock);
 842                 }
 843                 break;
 844         }
 845 }
 846
 847 /* this function must be called with interrupt disabled */
 848 static void disable_r8a66597_pipe_all(struct r8a66597 *r8a66597,
 849                                       struct r8a66597_device *dev)
 850 {
 851         int check_ep0 = 0;
 852         u16 pipenum;
 853
 854         if (!dev)
 855                 return;
 856
 857         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
 858                 if (!dev->pipe_cnt[pipenum])
 859                         continue;
 860
 861                 if (!check_ep0) {
 862                         check_ep0 = 1;
 863                         force_dequeue(r8a66597, 0, dev->address);
 864                 }
 865
 866                 r8a66597->pipe_cnt[pipenum] -= dev->pipe_cnt[pipenum];
 867                 dev->pipe_cnt[pipenum] = 0;
 868                 force_dequeue(r8a66597, pipenum, dev->address);
 869         }
 870
 871         dbg("disable_pipe");
 872
 873         r8a66597->dma_map &= ~(dev->dma_map);
 874         dev->dma_map = 0;
 875 }
 876
 877 static u16 get_interval(struct urb *urb, __u8 interval)
 878 {
 879         u16 time = 1;
 880         int i;
 881
 882         if (urb->dev->speed == USB_SPEED_HIGH) {
 883                 if (interval > IITV)
 884                         time = IITV;
 885                 else
 886                         time = interval ? interval - 1 : 0;
 887         } else {
 888                 if (interval > 128) {
 889                         time = IITV;
 890                 } else {
 891                         /* calculate the nearest value for PIPEPERI */
 892                         for (i = 0; i < 7; i++) {
 893                                 if ((1 << i) < interval &&
 894                                     (1 << (i + 1) > interval))
 895                                         time = 1 << i;
 896                         }
 897                 }
 898         }
 899
 900         return time;
 901 }
 902
 903 static unsigned long get_timer_interval(struct urb *urb, __u8 interval)
 904 {
 905         __u8 i;
 906         unsigned long time = 1;
 907
 908         if (usb_pipeisoc(urb->pipe))
 909                 return 0;
 910
 911         if (get_r8a66597_usb_speed(urb->dev->speed) == HSMODE) {
 912                 for (i = 0; i < (interval - 1); i++)
 913                         time *= 2;
 914                 time = time * 125 / 1000;       /* uSOF -> msec */
 915         } else {
 916                 time = interval;
 917         }
 918
 919         return time;
 920 }
 921
 922 /* this function must be called with interrupt disabled */
 923 static void init_pipe_info(struct r8a66597 *r8a66597, struct urb *urb,
 924                            struct usb_host_endpoint *hep,
 925                            struct usb_endpoint_descriptor *ep)
 926 {
 927         struct r8a66597_pipe_info info;
 928
 929         info.pipenum = get_empty_pipenum(r8a66597, ep);
 930         info.address = get_urb_to_r8a66597_addr(r8a66597, urb);
 931         info.epnum = usb_endpoint_num(ep);
 932         info.maxpacket = le16_to_cpu(ep->wMaxPacketSize);
 933         info.type = get_r8a66597_type(usb_endpoint_type(ep));
 934         info.bufnum = get_bufnum(info.pipenum);
 935         info.buf_bsize = get_buf_bsize(info.pipenum);
 936         if (info.type == R8A66597_BULK) {
 937                 info.interval = 0;
 938                 info.timer_interval = 0;
 939         } else {
 940                 info.interval = get_interval(urb, ep->bInterval);
 941                 info.timer_interval = get_timer_interval(urb, ep->bInterval);
 942         }
 943         if (usb_endpoint_dir_in(ep))
 944                 info.dir_in = 1;
 945         else
 946                 info.dir_in = 0;
 947
 948         enable_r8a66597_pipe(r8a66597, urb, hep, &info);
 949 }
 950
 951 static void init_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
 952 {
 953         struct r8a66597_device *dev;
 954
 955         dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 956         dev->state = USB_STATE_CONFIGURED;
 957 }
 958
 959 static void pipe_irq_enable(struct r8a66597 *r8a66597, struct urb *urb,
 960                             u16 pipenum)
 961 {
 962         if (pipenum == 0 && usb_pipeout(urb->pipe))
 963                 enable_irq_empty(r8a66597, pipenum);
 964         else
 965                 enable_irq_ready(r8a66597, pipenum);
 966
 967         if (!usb_pipeisoc(urb->pipe))
 968                 enable_irq_nrdy(r8a66597, pipenum);
 969 }
 970
 971 static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum)
 972 {
 973         disable_irq_ready(r8a66597, pipenum);
 974         disable_irq_nrdy(r8a66597, pipenum);
 975 }
 976
 977 static void r8a66597_root_hub_start_polling(struct r8a66597 *r8a66597)
 978 {
 979         mod_timer(&r8a66597->rh_timer,
 980                         jiffies + msecs_to_jiffies(R8A66597_RH_POLL_TIME));
 981 }
 982
 983 static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port,
 984                                         int connect)
 985 {
 986         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
 987
 988         rh->old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
 989         rh->scount = R8A66597_MAX_SAMPLING;
 990         if (connect)
 991                 rh->port |= 1 << USB_PORT_FEAT_CONNECTION;
 992         else
 993                 rh->port &= ~(1 << USB_PORT_FEAT_CONNECTION);
 994         rh->port |= 1 << USB_PORT_FEAT_C_CONNECTION;
 995
 996         r8a66597_root_hub_start_polling(r8a66597);
 997 }
 998
 999 /* this function must be called with interrupt disabled */
1000 static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port,
1001                                         u16 syssts)
1002 {
1003         if (syssts == SE0) {
1004                 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port));
1005                 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
1006                 return;
1007         }
1008
1009         if (syssts == FS_JSTS)
1010                 r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port));
1011         else if (syssts == LS_JSTS)
1012                 r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port));
1013
1014         r8a66597_write(r8a66597, ~DTCH, get_intsts_reg(port));
1015         r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port));
1016
1017         if (r8a66597->bus_suspended)
1018                 usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597));
1019 }
1020
1021 /* this function must be called with interrupt disabled */
1022 static void r8a66597_usb_connect(struct r8a66597 *r8a66597, int port)
1023 {
1024         u16 speed = get_rh_usb_speed(r8a66597, port);
1025         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1026
1027         if (speed == HSMODE)
1028                 rh->port |= (1 << USB_PORT_FEAT_HIGHSPEED);
1029         else if (speed == LSMODE)
1030                 rh->port |= (1 << USB_PORT_FEAT_LOWSPEED);
1031
1032         rh->port &= ~(1 << USB_PORT_FEAT_RESET);
1033         rh->port |= 1 << USB_PORT_FEAT_ENABLE;
1034 }
1035
1036 /* this function must be called with interrupt disabled */
1037 static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597, int port)
1038 {
1039         struct r8a66597_device *dev = r8a66597->root_hub[port].dev;
1040
1041         disable_r8a66597_pipe_all(r8a66597, dev);
1042         free_usb_address(r8a66597, dev);
1043
1044         start_root_hub_sampling(r8a66597, port, 0);
1045 }
1046
1047 /* this function must be called with interrupt disabled */
1048 static void prepare_setup_packet(struct r8a66597 *r8a66597,
1049                                  struct r8a66597_td *td)
1050 {
1051         int i;
1052         __le16 *p = (__le16 *)td->urb->setup_packet;
1053         unsigned long setup_addr = USBREQ;
1054
1055         r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket,
1056                        DCPMAXP);
1057         r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1);
1058
1059         for (i = 0; i < 4; i++) {
1060                 r8a66597_write(r8a66597, le16_to_cpu(p[i]), setup_addr);
1061                 setup_addr += 2;
1062         }
1063         r8a66597_write(r8a66597, SUREQ, DCPCTR);
1064 }
1065
1066 /* this function must be called with interrupt disabled */
1067 static void prepare_packet_read(struct r8a66597 *r8a66597,
1068                                 struct r8a66597_td *td)
1069 {
1070         struct urb *urb = td->urb;
1071
1072         if (usb_pipecontrol(urb->pipe)) {
1073                 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
1074                 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
1075                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1076                 if (urb->actual_length == 0) {
1077                         r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1078                         r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1079                 }
1080                 pipe_irq_disable(r8a66597, td->pipenum);
1081                 pipe_start(r8a66597, td->pipe);
1082                 pipe_irq_enable(r8a66597, urb, td->pipenum);
1083         } else {
1084                 if (urb->actual_length == 0) {
1085                         pipe_irq_disable(r8a66597, td->pipenum);
1086                         pipe_setting(r8a66597, td);
1087                         pipe_stop(r8a66597, td->pipe);
1088                         r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
1089
1090                         if (td->pipe->pipetre) {
1091                                 r8a66597_write(r8a66597, TRCLR,
1092                                                 td->pipe->pipetre);
1093                                 r8a66597_write(r8a66597,
1094                                                 DIV_ROUND_UP
1095                                                   (urb->transfer_buffer_length,
1096                                                    td->maxpacket),
1097                                                 td->pipe->pipetrn);
1098                                 r8a66597_bset(r8a66597, TRENB,
1099                                                 td->pipe->pipetre);
1100                         }
1101
1102                         pipe_start(r8a66597, td->pipe);
1103                         pipe_irq_enable(r8a66597, urb, td->pipenum);
1104                 }
1105         }
1106 }
1107
1108 /* this function must be called with interrupt disabled */
1109 static void prepare_packet_write(struct r8a66597 *r8a66597,
1110                                  struct r8a66597_td *td)
1111 {
1112         u16 tmp;
1113         struct urb *urb = td->urb;
1114
1115         if (usb_pipecontrol(urb->pipe)) {
1116                 pipe_stop(r8a66597, td->pipe);
1117                 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
1118                 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
1119                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1120                 if (urb->actual_length == 0) {
1121                         r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1122                         r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1123                 }
1124         } else {
1125                 if (urb->actual_length == 0)
1126                         pipe_setting(r8a66597, td);
1127                 if (td->pipe->pipetre)
1128                         r8a66597_bclr(r8a66597, TRENB, td->pipe->pipetre);
1129         }
1130         r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
1131
1132         fifo_change_from_pipe(r8a66597, td->pipe);
1133         tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1134         if (unlikely((tmp & FRDY) == 0))
1135                 pipe_irq_enable(r8a66597, urb, td->pipenum);
1136         else
1137                 packet_write(r8a66597, td->pipenum);
1138         pipe_start(r8a66597, td->pipe);
1139 }
1140
1141 /* this function must be called with interrupt disabled */
1142 static void prepare_status_packet(struct r8a66597 *r8a66597,
1143                                   struct r8a66597_td *td)
1144 {
1145         struct urb *urb = td->urb;
1146
1147         r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1148         pipe_stop(r8a66597, td->pipe);
1149
1150         if (urb->setup_packet[0] & USB_ENDPOINT_DIR_MASK) {
1151                 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
1152                 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
1153                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1154                 r8a66597_write(r8a66597, ~BEMP0, BEMPSTS);
1155                 r8a66597_write(r8a66597, BCLR | BVAL, CFIFOCTR);
1156                 enable_irq_empty(r8a66597, 0);
1157         } else {
1158                 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
1159                 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
1160                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1161                 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1162                 enable_irq_ready(r8a66597, 0);
1163         }
1164         enable_irq_nrdy(r8a66597, 0);
1165         pipe_start(r8a66597, td->pipe);
1166 }
1167
1168 static int is_set_address(unsigned char *setup_packet)
1169 {
1170         if (((setup_packet[0] & USB_TYPE_MASK) == USB_TYPE_STANDARD) &&
1171                         setup_packet[1] == USB_REQ_SET_ADDRESS)
1172                 return 1;
1173         else
1174                 return 0;
1175 }
1176
1177 /* this function must be called with interrupt disabled */
1178 static int start_transfer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1179 {
1180         BUG_ON(!td);
1181
1182         switch (td->type) {
1183         case USB_PID_SETUP:
1184                 if (is_set_address(td->urb->setup_packet)) {
1185                         td->set_address = 1;
1186                         td->urb->setup_packet[2] = alloc_usb_address(r8a66597,
1187                                                                      td->urb);
1188                         if (td->urb->setup_packet[2] == 0)
1189                                 return -EPIPE;
1190                 }
1191                 prepare_setup_packet(r8a66597, td);
1192                 break;
1193         case USB_PID_IN:
1194                 prepare_packet_read(r8a66597, td);
1195                 break;
1196         case USB_PID_OUT:
1197                 prepare_packet_write(r8a66597, td);
1198                 break;
1199         case USB_PID_ACK:
1200                 prepare_status_packet(r8a66597, td);
1201                 break;
1202         default:
1203                 printk(KERN_ERR "r8a66597: invalid type.\n");
1204                 break;
1205         }
1206
1207         return 0;
1208 }
1209
1210 static int check_transfer_finish(struct r8a66597_td *td, struct urb *urb)
1211 {
1212         if (usb_pipeisoc(urb->pipe)) {
1213                 if (urb->number_of_packets == td->iso_cnt)
1214                         return 1;
1215         }
1216
1217         /* control or bulk or interrupt */
1218         if ((urb->transfer_buffer_length <= urb->actual_length) ||
1219             (td->short_packet) || (td->zero_packet))
1220                 return 1;
1221
1222         return 0;
1223 }
1224
1225 /* this function must be called with interrupt disabled */
1226 static void set_td_timer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1227 {
1228         unsigned long time;
1229
1230         BUG_ON(!td);
1231
1232         if (!list_empty(&r8a66597->pipe_queue[td->pipenum]) &&
1233             !usb_pipecontrol(td->urb->pipe) && usb_pipein(td->urb->pipe)) {
1234                 r8a66597->timeout_map |= 1 << td->pipenum;
1235                 switch (usb_pipetype(td->urb->pipe)) {
1236                 case PIPE_INTERRUPT:
1237                 case PIPE_ISOCHRONOUS:
1238                         time = 30;
1239                         break;
1240                 default:
1241                         time = 300;
1242                         break;
1243                 }
1244
1245                 mod_timer(&r8a66597->td_timer[td->pipenum],
1246                           jiffies + msecs_to_jiffies(time));
1247         }
1248 }
1249
1250 /* this function must be called with interrupt disabled */
1251 static void finish_request(struct r8a66597 *r8a66597, struct r8a66597_td *td,
1252                 u16 pipenum, struct urb *urb, int status)
1253 __releases(r8a66597->lock) __acquires(r8a66597->lock)
1254 {
1255         int restart = 0;
1256         struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
1257
1258         r8a66597->timeout_map &= ~(1 << pipenum);
1259
1260         if (likely(td)) {
1261                 if (td->set_address && (status != 0 || urb->unlinked))
1262                         r8a66597->address_map &= ~(1 << urb->setup_packet[2]);
1263
1264                 pipe_toggle_save(r8a66597, td->pipe, urb);
1265                 list_del(&td->queue);
1266                 kfree(td);
1267         }
1268
1269         if (!list_empty(&r8a66597->pipe_queue[pipenum]))
1270                 restart = 1;
1271
1272         if (likely(urb)) {
1273                 if (usb_pipeisoc(urb->pipe))
1274                         urb->start_frame = r8a66597_get_frame(hcd);
1275
1276                 usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb);
1277                 spin_unlock(&r8a66597->lock);
1278                 usb_hcd_giveback_urb(hcd, urb, status);
1279                 spin_lock(&r8a66597->lock);
1280         }
1281
1282         if (restart) {
1283                 td = r8a66597_get_td(r8a66597, pipenum);
1284                 if (unlikely(!td))
1285                         return;
1286
1287                 start_transfer(r8a66597, td);
1288                 set_td_timer(r8a66597, td);
1289         }
1290 }
1291
1292 static void packet_read(struct r8a66597 *r8a66597, u16 pipenum)
1293 {
1294         u16 tmp;
1295         int rcv_len, bufsize, urb_len, size;
1296         u16 *buf;
1297         struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1298         struct urb *urb;
1299         int finish = 0;
1300         int status = 0;
1301
1302         if (unlikely(!td))
1303                 return;
1304         urb = td->urb;
1305
1306         fifo_change_from_pipe(r8a66597, td->pipe);
1307         tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1308         if (unlikely((tmp & FRDY) == 0)) {
1309                 pipe_stop(r8a66597, td->pipe);
1310                 pipe_irq_disable(r8a66597, pipenum);
1311                 printk(KERN_ERR "r8a66597: in fifo not ready (%d)\n", pipenum);
1312                 finish_request(r8a66597, td, pipenum, td->urb, -EPIPE);
1313                 return;
1314         }
1315
1316         /* prepare parameters */
1317         rcv_len = tmp & DTLN;
1318         if (usb_pipeisoc(urb->pipe)) {
1319                 buf = (u16 *)(urb->transfer_buffer +
1320                                 urb->iso_frame_desc[td->iso_cnt].offset);
1321                 urb_len = urb->iso_frame_desc[td->iso_cnt].length;
1322         } else {
1323                 buf = (void *)urb->transfer_buffer + urb->actual_length;
1324                 urb_len = urb->transfer_buffer_length - urb->actual_length;
1325         }
1326         bufsize = min(urb_len, (int) td->maxpacket);
1327         if (rcv_len <= bufsize) {
1328                 size = rcv_len;
1329         } else {
1330                 size = bufsize;
1331                 status = -EOVERFLOW;
1332                 finish = 1;
1333         }
1334
1335         /* update parameters */
1336         urb->actual_length += size;
1337         if (rcv_len == 0)
1338                 td->zero_packet = 1;
1339         if (rcv_len < bufsize) {
1340                 td->short_packet = 1;
1341         }
1342         if (usb_pipeisoc(urb->pipe)) {
1343                 urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1344                 urb->iso_frame_desc[td->iso_cnt].status = status;
1345                 td->iso_cnt++;
1346                 finish = 0;
1347         }
1348
1349         /* check transfer finish */
1350         if (finish || check_transfer_finish(td, urb)) {
1351                 pipe_stop(r8a66597, td->pipe);
1352                 pipe_irq_disable(r8a66597, pipenum);
1353                 finish = 1;
1354         }
1355
1356         /* read fifo */
1357         if (urb->transfer_buffer) {
1358                 if (size == 0)
1359                         r8a66597_write(r8a66597, BCLR, td->pipe->fifoctr);
1360                 else
1361                         r8a66597_read_fifo(r8a66597, td->pipe->fifoaddr,
1362                                            buf, size);
1363         }
1364
1365         if (finish && pipenum != 0)
1366                 finish_request(r8a66597, td, pipenum, urb, status);
1367 }
1368
1369 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum)
1370 {
1371         u16 tmp;
1372         int bufsize, size;
1373         u16 *buf;
1374         struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1375         struct urb *urb;
1376
1377         if (unlikely(!td))
1378                 return;
1379         urb = td->urb;
1380
1381         fifo_change_from_pipe(r8a66597, td->pipe);
1382         tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1383         if (unlikely((tmp & FRDY) == 0)) {
1384                 pipe_stop(r8a66597, td->pipe);
1385                 pipe_irq_disable(r8a66597, pipenum);
1386                 printk(KERN_ERR "r8a66597: out fifo not ready (%d)\n", pipenum);
1387                 finish_request(r8a66597, td, pipenum, urb, -EPIPE);
1388                 return;
1389         }
1390
1391         /* prepare parameters */
1392         bufsize = td->maxpacket;
1393         if (usb_pipeisoc(urb->pipe)) {
1394                 buf = (u16 *)(urb->transfer_buffer +
1395                                 urb->iso_frame_desc[td->iso_cnt].offset);
1396                 size = min(bufsize,
1397                            (int)urb->iso_frame_desc[td->iso_cnt].length);
1398         } else {
1399                 buf = (u16 *)(urb->transfer_buffer + urb->actual_length);
1400                 size = min_t(u32, bufsize,
1401                            urb->transfer_buffer_length - urb->actual_length);
1402         }
1403
1404         /* write fifo */
1405         if (pipenum > 0)
1406                 r8a66597_write(r8a66597, ~(1 << pipenum), BEMPSTS);
1407         if (urb->transfer_buffer) {
1408                 r8a66597_write_fifo(r8a66597, td->pipe->fifoaddr, buf, size);
1409                 if (!usb_pipebulk(urb->pipe) || td->maxpacket != size)
1410                         r8a66597_write(r8a66597, BVAL, td->pipe->fifoctr);
1411         }
1412
1413         /* update parameters */
1414         urb->actual_length += size;
1415         if (usb_pipeisoc(urb->pipe)) {
1416                 urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1417                 urb->iso_frame_desc[td->iso_cnt].status = 0;
1418                 td->iso_cnt++;
1419         }
1420
1421         /* check transfer finish */
1422         if (check_transfer_finish(td, urb)) {
1423                 disable_irq_ready(r8a66597, pipenum);
1424                 enable_irq_empty(r8a66597, pipenum);
1425                 if (!usb_pipeisoc(urb->pipe))
1426                         enable_irq_nrdy(r8a66597, pipenum);
1427         } else
1428                 pipe_irq_enable(r8a66597, urb, pipenum);
1429 }
1430
1431
1432 static void check_next_phase(struct r8a66597 *r8a66597, int status)
1433 {
1434         struct r8a66597_td *td = r8a66597_get_td(r8a66597, 0);
1435         struct urb *urb;
1436         u8 finish = 0;
1437
1438         if (unlikely(!td))
1439                 return;
1440         urb = td->urb;
1441
1442         switch (td->type) {
1443         case USB_PID_IN:
1444         case USB_PID_OUT:
1445                 if (check_transfer_finish(td, urb))
1446                         td->type = USB_PID_ACK;
1447                 break;
1448         case USB_PID_SETUP:
1449                 if (urb->transfer_buffer_length == urb->actual_length)
1450                         td->type = USB_PID_ACK;
1451                 else if (usb_pipeout(urb->pipe))
1452                         td->type = USB_PID_OUT;
1453                 else
1454                         td->type = USB_PID_IN;
1455                 break;
1456         case USB_PID_ACK:
1457                 finish = 1;
1458                 break;
1459         }
1460
1461         if (finish || status != 0 || urb->unlinked)
1462                 finish_request(r8a66597, td, 0, urb, status);
1463         else
1464                 start_transfer(r8a66597, td);
1465 }
1466
1467 static int get_urb_error(struct r8a66597 *r8a66597, u16 pipenum)
1468 {
1469         struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1470
1471         if (td) {
1472                 u16 pid = r8a66597_read(r8a66597, td->pipe->pipectr) & PID;
1473
1474                 if (pid == PID_NAK)
1475                         return -ECONNRESET;
1476                 else
1477                         return -EPIPE;
1478         }
1479         return 0;
1480 }
1481
1482 static void irq_pipe_ready(struct r8a66597 *r8a66597)
1483 {
1484         u16 check;
1485         u16 pipenum;
1486         u16 mask;
1487         struct r8a66597_td *td;
1488
1489         mask = r8a66597_read(r8a66597, BRDYSTS)
1490                & r8a66597_read(r8a66597, BRDYENB);
1491         r8a66597_write(r8a66597, ~mask, BRDYSTS);
1492         if (mask & BRDY0) {
1493                 td = r8a66597_get_td(r8a66597, 0);
1494                 if (td && td->type == USB_PID_IN)
1495                         packet_read(r8a66597, 0);
1496                 else
1497                         pipe_irq_disable(r8a66597, 0);
1498                 check_next_phase(r8a66597, 0);
1499         }
1500
1501         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1502                 check = 1 << pipenum;
1503                 if (mask & check) {
1504                         td = r8a66597_get_td(r8a66597, pipenum);
1505                         if (unlikely(!td))
1506                                 continue;
1507
1508                         if (td->type == USB_PID_IN)
1509                                 packet_read(r8a66597, pipenum);
1510                         else if (td->type == USB_PID_OUT)
1511                                 packet_write(r8a66597, pipenum);
1512                 }
1513         }
1514 }
1515
1516 static void irq_pipe_empty(struct r8a66597 *r8a66597)
1517 {
1518         u16 tmp;
1519         u16 check;
1520         u16 pipenum;
1521         u16 mask;
1522         struct r8a66597_td *td;
1523
1524         mask = r8a66597_read(r8a66597, BEMPSTS)
1525                & r8a66597_read(r8a66597, BEMPENB);
1526         r8a66597_write(r8a66597, ~mask, BEMPSTS);
1527         if (mask & BEMP0) {
1528                 cfifo_change(r8a66597, 0);
1529                 td = r8a66597_get_td(r8a66597, 0);
1530                 if (td && td->type != USB_PID_OUT)
1531                         disable_irq_empty(r8a66597, 0);
1532                 check_next_phase(r8a66597, 0);
1533         }
1534
1535         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1536                 check = 1 << pipenum;
1537                 if (mask &  check) {
1538                         struct r8a66597_td *td;
1539                         td = r8a66597_get_td(r8a66597, pipenum);
1540                         if (unlikely(!td))
1541                                 continue;
1542
1543                         tmp = r8a66597_read(r8a66597, td->pipe->pipectr);
1544                         if ((tmp & INBUFM) == 0) {
1545                                 disable_irq_empty(r8a66597, pipenum);
1546                                 pipe_irq_disable(r8a66597, pipenum);
1547                                 finish_request(r8a66597, td, pipenum, td->urb,
1548                                                 0);
1549                         }
1550                 }
1551         }
1552 }
1553
1554 static void irq_pipe_nrdy(struct r8a66597 *r8a66597)
1555 {
1556         u16 check;
1557         u16 pipenum;
1558         u16 mask;
1559         int status;
1560
1561         mask = r8a66597_read(r8a66597, NRDYSTS)
1562                & r8a66597_read(r8a66597, NRDYENB);
1563         r8a66597_write(r8a66597, ~mask, NRDYSTS);
1564         if (mask & NRDY0) {
1565                 cfifo_change(r8a66597, 0);
1566                 status = get_urb_error(r8a66597, 0);
1567                 pipe_irq_disable(r8a66597, 0);
1568                 check_next_phase(r8a66597, status);
1569         }
1570
1571         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1572                 check = 1 << pipenum;
1573                 if (mask & check) {
1574                         struct r8a66597_td *td;
1575                         td = r8a66597_get_td(r8a66597, pipenum);
1576                         if (unlikely(!td))
1577                                 continue;
1578
1579                         status = get_urb_error(r8a66597, pipenum);
1580                         pipe_irq_disable(r8a66597, pipenum);
1581                         pipe_stop(r8a66597, td->pipe);
1582                         finish_request(r8a66597, td, pipenum, td->urb, status);
1583                 }
1584         }
1585 }
1586
1587 static irqreturn_t r8a66597_irq(struct usb_hcd *hcd)
1588 {
1589         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1590         u16 intsts0, intsts1, intsts2;
1591         u16 intenb0, intenb1, intenb2;
1592         u16 mask0, mask1, mask2;
1593         int status;
1594
1595         spin_lock(&r8a66597->lock);
1596
1597         intsts0 = r8a66597_read(r8a66597, INTSTS0);
1598         intsts1 = r8a66597_read(r8a66597, INTSTS1);
1599         intsts2 = r8a66597_read(r8a66597, INTSTS2);
1600         intenb0 = r8a66597_read(r8a66597, INTENB0);
1601         intenb1 = r8a66597_read(r8a66597, INTENB1);
1602         intenb2 = r8a66597_read(r8a66597, INTENB2);
1603
1604         mask2 = intsts2 & intenb2;
1605         mask1 = intsts1 & intenb1;
1606         mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY);
1607         if (mask2) {
1608                 if (mask2 & ATTCH) {
1609                         r8a66597_write(r8a66597, ~ATTCH, INTSTS2);
1610                         r8a66597_bclr(r8a66597, ATTCHE, INTENB2);
1611
1612                         /* start usb bus sampling */
1613                         start_root_hub_sampling(r8a66597, 1, 1);
1614                 }
1615                 if (mask2 & DTCH) {
1616                         r8a66597_write(r8a66597, ~DTCH, INTSTS2);
1617                         r8a66597_bclr(r8a66597, DTCHE, INTENB2);
1618                         r8a66597_usb_disconnect(r8a66597, 1);
1619                 }
1620                 if (mask2 & BCHG) {
1621                         r8a66597_write(r8a66597, ~BCHG, INTSTS2);
1622                         r8a66597_bclr(r8a66597, BCHGE, INTENB2);
1623                         usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597));
1624                 }
1625         }
1626
1627         if (mask1) {
1628                 if (mask1 & ATTCH) {
1629                         r8a66597_write(r8a66597, ~ATTCH, INTSTS1);
1630                         r8a66597_bclr(r8a66597, ATTCHE, INTENB1);
1631
1632                         /* start usb bus sampling */
1633                         start_root_hub_sampling(r8a66597, 0, 1);
1634                 }
1635                 if (mask1 & DTCH) {
1636                         r8a66597_write(r8a66597, ~DTCH, INTSTS1);
1637                         r8a66597_bclr(r8a66597, DTCHE, INTENB1);
1638                         r8a66597_usb_disconnect(r8a66597, 0);
1639                 }
1640                 if (mask1 & BCHG) {
1641                         r8a66597_write(r8a66597, ~BCHG, INTSTS1);
1642                         r8a66597_bclr(r8a66597, BCHGE, INTENB1);
1643                         usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597));
1644                 }
1645
1646                 if (mask1 & SIGN) {
1647                         r8a66597_write(r8a66597, ~SIGN, INTSTS1);
1648                         status = get_urb_error(r8a66597, 0);
1649                         check_next_phase(r8a66597, status);
1650                 }
1651                 if (mask1 & SACK) {
1652                         r8a66597_write(r8a66597, ~SACK, INTSTS1);
1653                         check_next_phase(r8a66597, 0);
1654                 }
1655         }
1656         if (mask0) {
1657                 if (mask0 & BRDY)
1658                         irq_pipe_ready(r8a66597);
1659                 if (mask0 & BEMP)
1660                         irq_pipe_empty(r8a66597);
1661                 if (mask0 & NRDY)
1662                         irq_pipe_nrdy(r8a66597);
1663         }
1664
1665         spin_unlock(&r8a66597->lock);
1666         return IRQ_HANDLED;
1667 }
1668
1669 /* this function must be called with interrupt disabled */
1670 static void r8a66597_root_hub_control(struct r8a66597 *r8a66597, int port)
1671 {
1672         u16 tmp;
1673         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1674
1675         if (rh->port & (1 << USB_PORT_FEAT_RESET)) {
1676                 unsigned long dvstctr_reg = get_dvstctr_reg(port);
1677
1678                 tmp = r8a66597_read(r8a66597, dvstctr_reg);
1679                 if ((tmp & USBRST) == USBRST) {
1680                         r8a66597_mdfy(r8a66597, UACT, USBRST | UACT,
1681                                       dvstctr_reg);
1682                         r8a66597_root_hub_start_polling(r8a66597);
1683                 } else
1684                         r8a66597_usb_connect(r8a66597, port);
1685         }
1686
1687         if (!(rh->port & (1 << USB_PORT_FEAT_CONNECTION))) {
1688                 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port));
1689                 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
1690         }
1691
1692         if (rh->scount > 0) {
1693                 tmp = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
1694                 if (tmp == rh->old_syssts) {
1695                         rh->scount--;
1696                         if (rh->scount == 0)
1697                                 r8a66597_check_syssts(r8a66597, port, tmp);
1698                         else
1699                                 r8a66597_root_hub_start_polling(r8a66597);
1700                 } else {
1701                         rh->scount = R8A66597_MAX_SAMPLING;
1702                         rh->old_syssts = tmp;
1703                         r8a66597_root_hub_start_polling(r8a66597);
1704                 }
1705         }
1706 }
1707
1708 static void r8a66597_interval_timer(unsigned long _r8a66597)
1709 {
1710         struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1711         unsigned long flags;
1712         u16 pipenum;
1713         struct r8a66597_td *td;
1714
1715         spin_lock_irqsave(&r8a66597->lock, flags);
1716
1717         for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1718                 if (!(r8a66597->interval_map & (1 << pipenum)))
1719                         continue;
1720                 if (timer_pending(&r8a66597->interval_timer[pipenum]))
1721                         continue;
1722
1723                 td = r8a66597_get_td(r8a66597, pipenum);
1724                 if (td)
1725                         start_transfer(r8a66597, td);
1726         }
1727
1728         spin_unlock_irqrestore(&r8a66597->lock, flags);
1729 }
1730
1731 static void r8a66597_td_timer(unsigned long _r8a66597)
1732 {
1733         struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1734         unsigned long flags;
1735         u16 pipenum;
1736         struct r8a66597_td *td, *new_td = NULL;
1737         struct r8a66597_pipe *pipe;
1738
1739         spin_lock_irqsave(&r8a66597->lock, flags);
1740         for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1741                 if (!(r8a66597->timeout_map & (1 << pipenum)))
1742                         continue;
1743                 if (timer_pending(&r8a66597->td_timer[pipenum]))
1744                         continue;
1745
1746                 td = r8a66597_get_td(r8a66597, pipenum);
1747                 if (!td) {
1748                         r8a66597->timeout_map &= ~(1 << pipenum);
1749                         continue;
1750                 }
1751
1752                 if (td->urb->actual_length) {
1753                         set_td_timer(r8a66597, td);
1754                         break;
1755                 }
1756
1757                 pipe = td->pipe;
1758                 pipe_stop(r8a66597, pipe);
1759
1760                 new_td = td;
1761                 do {
1762                         list_move_tail(&new_td->queue,
1763                                        &r8a66597->pipe_queue[pipenum]);
1764                         new_td = r8a66597_get_td(r8a66597, pipenum);
1765                         if (!new_td) {
1766                                 new_td = td;
1767                                 break;
1768                         }
1769                 } while (td != new_td && td->address == new_td->address);
1770
1771                 start_transfer(r8a66597, new_td);
1772
1773                 if (td == new_td)
1774                         r8a66597->timeout_map &= ~(1 << pipenum);
1775                 else
1776                         set_td_timer(r8a66597, new_td);
1777                 break;
1778         }
1779         spin_unlock_irqrestore(&r8a66597->lock, flags);
1780 }
1781
1782 static void r8a66597_timer(unsigned long _r8a66597)
1783 {
1784         struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1785         unsigned long flags;
1786         int port;
1787
1788         spin_lock_irqsave(&r8a66597->lock, flags);
1789
1790         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
1791                 r8a66597_root_hub_control(r8a66597, port);
1792
1793         spin_unlock_irqrestore(&r8a66597->lock, flags);
1794 }
1795
1796 static int check_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
1797 {
1798         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
1799
1800         if (dev && dev->address && dev->state != USB_STATE_CONFIGURED &&
1801             (urb->dev->state == USB_STATE_CONFIGURED))
1802                 return 1;
1803         else
1804                 return 0;
1805 }
1806
1807 static int r8a66597_start(struct usb_hcd *hcd)
1808 {
1809         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1810
1811         hcd->state = HC_STATE_RUNNING;
1812         return enable_controller(r8a66597);
1813 }
1814
1815 static void r8a66597_stop(struct usb_hcd *hcd)
1816 {
1817         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1818
1819         disable_controller(r8a66597);
1820 }
1821
1822 static void set_address_zero(struct r8a66597 *r8a66597, struct urb *urb)
1823 {
1824         unsigned int usb_address = usb_pipedevice(urb->pipe);
1825         u16 root_port, hub_port;
1826
1827         if (usb_address == 0) {
1828                 get_port_number(urb->dev->devpath,
1829                                 &root_port, &hub_port);
1830                 set_devadd_reg(r8a66597, 0,
1831                                get_r8a66597_usb_speed(urb->dev->speed),
1832                                get_parent_r8a66597_address(r8a66597, urb->dev),
1833                                hub_port, root_port);
1834         }
1835 }
1836
1837 static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597,
1838                                             struct urb *urb,
1839                                             struct usb_host_endpoint *hep)
1840 {
1841         struct r8a66597_td *td;
1842         u16 pipenum;
1843
1844         td = kzalloc(sizeof(struct r8a66597_td), GFP_ATOMIC);
1845         if (td == NULL)
1846                 return NULL;
1847
1848         pipenum = r8a66597_get_pipenum(urb, hep);
1849         td->pipenum = pipenum;
1850         td->pipe = hep->hcpriv;
1851         td->urb = urb;
1852         td->address = get_urb_to_r8a66597_addr(r8a66597, urb);
1853         td->maxpacket = usb_maxpacket(urb->dev, urb->pipe,
1854                                       !usb_pipein(urb->pipe));
1855         if (usb_pipecontrol(urb->pipe))
1856                 td->type = USB_PID_SETUP;
1857         else if (usb_pipein(urb->pipe))
1858                 td->type = USB_PID_IN;
1859         else
1860                 td->type = USB_PID_OUT;
1861         INIT_LIST_HEAD(&td->queue);
1862
1863         return td;
1864 }
1865
1866 static int r8a66597_urb_enqueue(struct usb_hcd *hcd,
1867                                 struct urb *urb,
1868                                 gfp_t mem_flags)
1869 {
1870         struct usb_host_endpoint *hep = urb->ep;
1871         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1872         struct r8a66597_td *td = NULL;
1873         int ret, request = 0;
1874         unsigned long flags;
1875
1876         spin_lock_irqsave(&r8a66597->lock, flags);
1877         if (!get_urb_to_r8a66597_dev(r8a66597, urb)) {
1878                 ret = -ENODEV;
1879                 goto error_not_linked;
1880         }
1881
1882         ret = usb_hcd_link_urb_to_ep(hcd, urb);
1883         if (ret)
1884                 goto error_not_linked;
1885
1886         if (!hep->hcpriv) {
1887                 hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe),
1888                                 GFP_ATOMIC);
1889                 if (!hep->hcpriv) {
1890                         ret = -ENOMEM;
1891                         goto error;
1892                 }
1893                 set_pipe_reg_addr(hep->hcpriv, R8A66597_PIPE_NO_DMA);
1894                 if (usb_pipeendpoint(urb->pipe))
1895                         init_pipe_info(r8a66597, urb, hep, &hep->desc);
1896         }
1897
1898         if (unlikely(check_pipe_config(r8a66597, urb)))
1899                 init_pipe_config(r8a66597, urb);
1900
1901         set_address_zero(r8a66597, urb);
1902         td = r8a66597_make_td(r8a66597, urb, hep);
1903         if (td == NULL) {
1904                 ret = -ENOMEM;
1905                 goto error;
1906         }
1907         if (list_empty(&r8a66597->pipe_queue[td->pipenum]))
1908                 request = 1;
1909         list_add_tail(&td->queue, &r8a66597->pipe_queue[td->pipenum]);
1910         urb->hcpriv = td;
1911
1912         if (request) {
1913                 if (td->pipe->info.timer_interval) {
1914                         r8a66597->interval_map |= 1 << td->pipenum;
1915                         mod_timer(&r8a66597->interval_timer[td->pipenum],
1916                                   jiffies + msecs_to_jiffies(
1917                                         td->pipe->info.timer_interval));
1918                 } else {
1919                         ret = start_transfer(r8a66597, td);
1920                         if (ret < 0) {
1921                                 list_del(&td->queue);
1922                                 kfree(td);
1923                         }
1924                 }
1925         } else
1926                 set_td_timer(r8a66597, td);
1927
1928 error:
1929         if (ret)
1930                 usb_hcd_unlink_urb_from_ep(hcd, urb);
1931 error_not_linked:
1932         spin_unlock_irqrestore(&r8a66597->lock, flags);
1933         return ret;
1934 }
1935
1936 static int r8a66597_urb_dequeue(struct usb_hcd *hcd, struct urb *urb,
1937                 int status)
1938 {
1939         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1940         struct r8a66597_td *td;
1941         unsigned long flags;
1942         int rc;
1943
1944         spin_lock_irqsave(&r8a66597->lock, flags);
1945         rc = usb_hcd_check_unlink_urb(hcd, urb, status);
1946         if (rc)
1947                 goto done;
1948
1949         if (urb->hcpriv) {
1950                 td = urb->hcpriv;
1951                 pipe_stop(r8a66597, td->pipe);
1952                 pipe_irq_disable(r8a66597, td->pipenum);
1953                 disable_irq_empty(r8a66597, td->pipenum);
1954                 finish_request(r8a66597, td, td->pipenum, urb, status);
1955         }
1956  done:
1957         spin_unlock_irqrestore(&r8a66597->lock, flags);
1958         return rc;
1959 }
1960
1961 static void r8a66597_endpoint_disable(struct usb_hcd *hcd,
1962                                       struct usb_host_endpoint *hep)
1963 {
1964         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1965         struct r8a66597_pipe *pipe = (struct r8a66597_pipe *)hep->hcpriv;
1966         struct r8a66597_td *td;
1967         struct urb *urb = NULL;
1968         u16 pipenum;
1969         unsigned long flags;
1970
1971         if (pipe == NULL)
1972                 return;
1973         pipenum = pipe->info.pipenum;
1974
1975         if (pipenum == 0) {
1976                 kfree(hep->hcpriv);
1977                 hep->hcpriv = NULL;
1978                 return;
1979         }
1980
1981         spin_lock_irqsave(&r8a66597->lock, flags);
1982         pipe_stop(r8a66597, pipe);
1983         pipe_irq_disable(r8a66597, pipenum);
1984         disable_irq_empty(r8a66597, pipenum);
1985         td = r8a66597_get_td(r8a66597, pipenum);
1986         if (td)
1987                 urb = td->urb;
1988         finish_request(r8a66597, td, pipenum, urb, -ESHUTDOWN);
1989         kfree(hep->hcpriv);
1990         hep->hcpriv = NULL;
1991         spin_unlock_irqrestore(&r8a66597->lock, flags);
1992 }
1993
1994 static int r8a66597_get_frame(struct usb_hcd *hcd)
1995 {
1996         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1997         return r8a66597_read(r8a66597, FRMNUM) & 0x03FF;
1998 }
1999
2000 static void collect_usb_address_map(struct usb_device *udev, unsigned long *map)
2001 {
2002         int chix;
2003
2004         if (udev->state == USB_STATE_CONFIGURED &&
2005             udev->parent && udev->parent->devnum > 1 &&
2006             udev->parent->descriptor.bDeviceClass == USB_CLASS_HUB)
2007                 map[udev->devnum/32] |= (1 << (udev->devnum % 32));
2008
2009         for (chix = 0; chix < udev->maxchild; chix++) {
2010                 struct usb_device *childdev = udev->children[chix];
2011
2012                 if (childdev)
2013                         collect_usb_address_map(childdev, map);
2014         }
2015 }
2016
2017 /* this function must be called with interrupt disabled */
2018 static struct r8a66597_device *get_r8a66597_device(struct r8a66597 *r8a66597,
2019                                                    int addr)
2020 {
2021         struct r8a66597_device *dev;
2022         struct list_head *list = &r8a66597->child_device;
2023
2024         list_for_each_entry(dev, list, device_list) {
2025                 if (!dev)
2026                         continue;
2027                 if (dev->usb_address != addr)
2028                         continue;
2029
2030                 return dev;
2031         }
2032
2033         printk(KERN_ERR "r8a66597: get_r8a66597_device fail.(%d)\n", addr);
2034         return NULL;
2035 }
2036
2037 static void update_usb_address_map(struct r8a66597 *r8a66597,
2038                                    struct usb_device *root_hub,
2039                                    unsigned long *map)
2040 {
2041         int i, j, addr;
2042         unsigned long diff;
2043         unsigned long flags;
2044
2045         for (i = 0; i < 4; i++) {
2046                 diff = r8a66597->child_connect_map[i] ^ map[i];
2047                 if (!diff)
2048                         continue;
2049
2050                 for (j = 0; j < 32; j++) {
2051                         if (!(diff & (1 << j)))
2052                                 continue;
2053
2054                         addr = i * 32 + j;
2055                         if (map[i] & (1 << j))
2056                                 set_child_connect_map(r8a66597, addr);
2057                         else {
2058                                 struct r8a66597_device *dev;
2059
2060                                 spin_lock_irqsave(&r8a66597->lock, flags);
2061                                 dev = get_r8a66597_device(r8a66597, addr);
2062                                 disable_r8a66597_pipe_all(r8a66597, dev);
2063                                 free_usb_address(r8a66597, dev);
2064                                 put_child_connect_map(r8a66597, addr);
2065                                 spin_unlock_irqrestore(&r8a66597->lock, flags);
2066                         }
2067                 }
2068         }
2069 }
2070
2071 static void r8a66597_check_detect_child(struct r8a66597 *r8a66597,
2072                                         struct usb_hcd *hcd)
2073 {
2074         struct usb_bus *bus;
2075         unsigned long now_map[4];
2076
2077         memset(now_map, 0, sizeof(now_map));
2078
2079         list_for_each_entry(bus, &usb_bus_list, bus_list) {
2080                 if (!bus->root_hub)
2081                         continue;
2082
2083                 if (bus->busnum != hcd->self.busnum)
2084                         continue;
2085
2086                 collect_usb_address_map(bus->root_hub, now_map);
2087                 update_usb_address_map(r8a66597, bus->root_hub, now_map);
2088         }
2089 }
2090
2091 static int r8a66597_hub_status_data(struct usb_hcd *hcd, char *buf)
2092 {
2093         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2094         unsigned long flags;
2095         int i;
2096
2097         r8a66597_check_detect_child(r8a66597, hcd);
2098
2099         spin_lock_irqsave(&r8a66597->lock, flags);
2100
2101         *buf = 0;       /* initialize (no change) */
2102
2103         for (i = 0; i < R8A66597_MAX_ROOT_HUB; i++) {
2104                 if (r8a66597->root_hub[i].port & 0xffff0000)
2105                         *buf |= 1 << (i + 1);
2106         }
2107
2108         spin_unlock_irqrestore(&r8a66597->lock, flags);
2109
2110         return (*buf != 0);
2111 }
2112
2113 static void r8a66597_hub_descriptor(struct r8a66597 *r8a66597,
2114                                     struct usb_hub_descriptor *desc)
2115 {
2116         desc->bDescriptorType = 0x29;
2117         desc->bHubContrCurrent = 0;
2118         desc->bNbrPorts = R8A66597_MAX_ROOT_HUB;
2119         desc->bDescLength = 9;
2120         desc->bPwrOn2PwrGood = 0;
2121         desc->wHubCharacteristics = cpu_to_le16(0x0011);
2122         desc->bitmap[0] = ((1 << R8A66597_MAX_ROOT_HUB) - 1) << 1;
2123         desc->bitmap[1] = ~0;
2124 }
2125
2126 static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
2127                                 u16 wIndex, char *buf, u16 wLength)
2128 {
2129         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2130         int ret;
2131         int port = (wIndex & 0x00FF) - 1;
2132         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
2133         unsigned long flags;
2134
2135         ret = 0;
2136
2137         spin_lock_irqsave(&r8a66597->lock, flags);
2138         switch (typeReq) {
2139         case ClearHubFeature:
2140         case SetHubFeature:
2141                 switch (wValue) {
2142                 case C_HUB_OVER_CURRENT:
2143                 case C_HUB_LOCAL_POWER:
2144                         break;
2145                 default:
2146                         goto error;
2147                 }
2148                 break;
2149         case ClearPortFeature:
2150                 if (wIndex > R8A66597_MAX_ROOT_HUB)
2151                         goto error;
2152                 if (wLength != 0)
2153                         goto error;
2154
2155                 switch (wValue) {
2156                 case USB_PORT_FEAT_ENABLE:
2157                         rh->port &= ~(1 << USB_PORT_FEAT_POWER);
2158                         break;
2159                 case USB_PORT_FEAT_SUSPEND:
2160                         break;
2161                 case USB_PORT_FEAT_POWER:
2162                         r8a66597_port_power(r8a66597, port, 0);
2163                         break;
2164                 case USB_PORT_FEAT_C_ENABLE:
2165                 case USB_PORT_FEAT_C_SUSPEND:
2166                 case USB_PORT_FEAT_C_CONNECTION:
2167                 case USB_PORT_FEAT_C_OVER_CURRENT:
2168                 case USB_PORT_FEAT_C_RESET:
2169                         break;
2170                 default:
2171                         goto error;
2172                 }
2173                 rh->port &= ~(1 << wValue);
2174                 break;
2175         case GetHubDescriptor:
2176                 r8a66597_hub_descriptor(r8a66597,
2177                                         (struct usb_hub_descriptor *)buf);
2178                 break;
2179         case GetHubStatus:
2180                 *buf = 0x00;
2181                 break;
2182         case GetPortStatus:
2183                 if (wIndex > R8A66597_MAX_ROOT_HUB)
2184                         goto error;
2185                 *(__le32 *)buf = cpu_to_le32(rh->port);
2186                 break;
2187         case SetPortFeature:
2188                 if (wIndex > R8A66597_MAX_ROOT_HUB)
2189                         goto error;
2190                 if (wLength != 0)
2191                         goto error;
2192
2193                 switch (wValue) {
2194                 case USB_PORT_FEAT_SUSPEND:
2195                         break;
2196                 case USB_PORT_FEAT_POWER:
2197                         r8a66597_port_power(r8a66597, port, 1);
2198                         rh->port |= (1 << USB_PORT_FEAT_POWER);
2199                         break;
2200                 case USB_PORT_FEAT_RESET: {
2201                         struct r8a66597_device *dev = rh->dev;
2202
2203                         rh->port |= (1 << USB_PORT_FEAT_RESET);
2204
2205                         disable_r8a66597_pipe_all(r8a66597, dev);
2206                         free_usb_address(r8a66597, dev);
2207
2208                         r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT,
2209                                       get_dvstctr_reg(port));
2210                         mod_timer(&r8a66597->rh_timer,
2211                                   jiffies + msecs_to_jiffies(50));
2212                         }
2213                         break;
2214                 default:
2215                         goto error;
2216                 }
2217                 rh->port |= 1 << wValue;
2218                 break;
2219         default:
2220 error:
2221                 ret = -EPIPE;
2222                 break;
2223         }
2224
2225         spin_unlock_irqrestore(&r8a66597->lock, flags);
2226         return ret;
2227 }
2228
2229 #if defined(CONFIG_PM)
2230 static int r8a66597_bus_suspend(struct usb_hcd *hcd)
2231 {
2232         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2233         int port;
2234
2235         dbg("%s", __func__);
2236
2237         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++) {
2238                 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
2239                 unsigned long dvstctr_reg = get_dvstctr_reg(port);
2240
2241                 if (!(rh->port & (1 << USB_PORT_FEAT_ENABLE)))
2242                         continue;
2243
2244                 dbg("suspend port = %d", port);
2245                 r8a66597_bclr(r8a66597, UACT, dvstctr_reg);     /* suspend */
2246                 rh->port |= 1 << USB_PORT_FEAT_SUSPEND;
2247
2248                 if (rh->dev->udev->do_remote_wakeup) {
2249                         msleep(3);      /* waiting last SOF */
2250                         r8a66597_bset(r8a66597, RWUPE, dvstctr_reg);
2251                         r8a66597_write(r8a66597, ~BCHG, get_intsts_reg(port));
2252                         r8a66597_bset(r8a66597, BCHGE, get_intenb_reg(port));
2253                 }
2254         }
2255
2256         r8a66597->bus_suspended = 1;
2257
2258         return 0;
2259 }
2260
2261 static int r8a66597_bus_resume(struct usb_hcd *hcd)
2262 {
2263         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2264         int port;
2265
2266         dbg("%s", __func__);
2267
2268         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++) {
2269                 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
2270                 unsigned long dvstctr_reg = get_dvstctr_reg(port);
2271
2272                 if (!(rh->port & (1 << USB_PORT_FEAT_SUSPEND)))
2273                         continue;
2274
2275                 dbg("resume port = %d", port);
2276                 rh->port &= ~(1 << USB_PORT_FEAT_SUSPEND);
2277                 rh->port |= 1 << USB_PORT_FEAT_C_SUSPEND;
2278                 r8a66597_mdfy(r8a66597, RESUME, RESUME | UACT, dvstctr_reg);
2279                 msleep(50);
2280                 r8a66597_mdfy(r8a66597, UACT, RESUME | UACT, dvstctr_reg);
2281         }
2282
2283         return 0;
2284
2285 }
2286 #else
2287 #define r8a66597_bus_suspend    NULL
2288 #define r8a66597_bus_resume     NULL
2289 #endif
2290
2291 static struct hc_driver r8a66597_hc_driver = {
2292         .description =          hcd_name,
2293         .hcd_priv_size =        sizeof(struct r8a66597),
2294         .irq =                  r8a66597_irq,
2295
2296         /*
2297          * generic hardware linkage
2298          */
2299         .flags =                HCD_USB2,
2300
2301         .start =                r8a66597_start,
2302         .stop =                 r8a66597_stop,
2303
2304         /*
2305          * managing i/o requests and associated device resources
2306          */
2307         .urb_enqueue =          r8a66597_urb_enqueue,
2308         .urb_dequeue =          r8a66597_urb_dequeue,
2309         .endpoint_disable =     r8a66597_endpoint_disable,
2310
2311         /*
2312          * periodic schedule support
2313          */
2314         .get_frame_number =     r8a66597_get_frame,
2315
2316         /*
2317          * root hub support
2318          */
2319         .hub_status_data =      r8a66597_hub_status_data,
2320         .hub_control =          r8a66597_hub_control,
2321         .bus_suspend =          r8a66597_bus_suspend,
2322         .bus_resume =           r8a66597_bus_resume,
2323 };
2324
2325 #if defined(CONFIG_PM)
2326 static int r8a66597_suspend(struct platform_device *pdev, pm_message_t state)
2327 {
2328         struct r8a66597         *r8a66597 = dev_get_drvdata(&pdev->dev);
2329         int port;
2330
2331         dbg("%s", __func__);
2332
2333         disable_controller(r8a66597);
2334
2335         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++) {
2336                 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
2337
2338                 rh->port = 0x00000000;
2339         }
2340
2341         return 0;
2342 }
2343
2344 static int r8a66597_resume(struct platform_device *pdev)
2345 {
2346         struct r8a66597         *r8a66597 = dev_get_drvdata(&pdev->dev);
2347         struct usb_hcd          *hcd = r8a66597_to_hcd(r8a66597);
2348
2349         dbg("%s", __func__);
2350
2351         enable_controller(r8a66597);
2352         usb_root_hub_lost_power(hcd->self.root_hub);
2353
2354         return 0;
2355 }
2356 #else   /* if defined(CONFIG_PM) */
2357 #define r8a66597_suspend        NULL
2358 #define r8a66597_resume         NULL
2359 #endif
2360
2361 static int __init_or_module r8a66597_remove(struct platform_device *pdev)
2362 {
2363         struct r8a66597         *r8a66597 = dev_get_drvdata(&pdev->dev);
2364         struct usb_hcd          *hcd = r8a66597_to_hcd(r8a66597);
2365
2366         del_timer_sync(&r8a66597->rh_timer);
2367         usb_remove_hcd(hcd);
2368         iounmap((void *)r8a66597->reg);
2369 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) && defined(CONFIG_HAVE_CLK)
2370         clk_put(r8a66597->clk);
2371 #endif
2372         usb_put_hcd(hcd);
2373         return 0;
2374 }
2375
2376 static int __init r8a66597_probe(struct platform_device *pdev)
2377 {
2378 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) && defined(CONFIG_HAVE_CLK)
2379         char clk_name[8];
2380 #endif
2381         struct resource *res = NULL, *ires;
2382         int irq = -1;
2383         void __iomem *reg = NULL;
2384         struct usb_hcd *hcd = NULL;
2385         struct r8a66597 *r8a66597;
2386         int ret = 0;
2387         int i;
2388         unsigned long irq_trigger;
2389
2390         if (pdev->dev.dma_mask) {
2391                 ret = -EINVAL;
2392                 dev_err(&pdev->dev, "dma not supported\n");
2393                 goto clean_up;
2394         }
2395
2396         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2397         if (!res) {
2398                 ret = -ENODEV;
2399                 dev_err(&pdev->dev, "platform_get_resource error.\n");
2400                 goto clean_up;
2401         }
2402
2403         ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
2404         if (!ires) {
2405                 ret = -ENODEV;
2406                 dev_err(&pdev->dev,
2407                         "platform_get_resource IORESOURCE_IRQ error.\n");
2408                 goto clean_up;
2409         }
2410
2411         irq = ires->start;
2412         irq_trigger = ires->flags & IRQF_TRIGGER_MASK;
2413
2414         reg = ioremap(res->start, resource_size(res));
2415         if (reg == NULL) {
2416                 ret = -ENOMEM;
2417                 dev_err(&pdev->dev, "ioremap error.\n");
2418                 goto clean_up;
2419         }
2420
2421         /* initialize hcd */
2422         hcd = usb_create_hcd(&r8a66597_hc_driver, &pdev->dev, (char *)hcd_name);
2423         if (!hcd) {
2424                 ret = -ENOMEM;
2425                 dev_err(&pdev->dev, "Failed to create hcd\n");
2426                 goto clean_up;
2427         }
2428         r8a66597 = hcd_to_r8a66597(hcd);
2429         memset(r8a66597, 0, sizeof(struct r8a66597));
2430         dev_set_drvdata(&pdev->dev, r8a66597);
2431
2432 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) && defined(CONFIG_HAVE_CLK)
2433         snprintf(clk_name, sizeof(clk_name), "usb%d", pdev->id);
2434         r8a66597->clk = clk_get(&pdev->dev, clk_name);
2435         if (IS_ERR(r8a66597->clk)) {
2436                 dev_err(&pdev->dev, "cannot get clock \"%s\"\n", clk_name);
2437                 ret = PTR_ERR(r8a66597->clk);
2438                 goto clean_up2;
2439         }
2440 #endif
2441
2442         spin_lock_init(&r8a66597->lock);
2443         init_timer(&r8a66597->rh_timer);
2444         r8a66597->rh_timer.function = r8a66597_timer;
2445         r8a66597->rh_timer.data = (unsigned long)r8a66597;
2446         r8a66597->reg = (unsigned long)reg;
2447
2448         for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) {
2449                 INIT_LIST_HEAD(&r8a66597->pipe_queue[i]);
2450                 init_timer(&r8a66597->td_timer[i]);
2451                 r8a66597->td_timer[i].function = r8a66597_td_timer;
2452                 r8a66597->td_timer[i].data = (unsigned long)r8a66597;
2453                 setup_timer(&r8a66597->interval_timer[i],
2454                                 r8a66597_interval_timer,
2455                                 (unsigned long)r8a66597);
2456         }
2457         INIT_LIST_HEAD(&r8a66597->child_device);
2458
2459         hcd->rsrc_start = res->start;
2460
2461         /* irq_sense setting on cmdline takes precedence over resource
2462          * settings, so the introduction of irqflags in IRQ resourse
2463          * won't disturb existing setups */
2464         switch (irq_sense) {
2465                 case INTL:
2466                         irq_trigger = IRQF_TRIGGER_LOW;
2467                         break;
2468                 case 0:
2469                         irq_trigger = IRQF_TRIGGER_FALLING;
2470                         break;
2471                 case 0xff:
2472                         if (irq_trigger)
2473                                 irq_sense = (irq_trigger & IRQF_TRIGGER_LOW) ?
2474                                             INTL : 0;
2475                         else {
2476                                 irq_sense = INTL;
2477                                 irq_trigger = IRQF_TRIGGER_LOW;
2478                         }
2479                         break;
2480                 default:
2481                         dev_err(&pdev->dev, "Unknown irq_sense value.\n");
2482         }
2483
2484         ret = usb_add_hcd(hcd, irq, IRQF_DISABLED | irq_trigger);
2485         if (ret != 0) {
2486                 dev_err(&pdev->dev, "Failed to add hcd\n");
2487                 goto clean_up3;
2488         }
2489
2490         return 0;
2491
2492 clean_up3:
2493 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) && defined(CONFIG_HAVE_CLK)
2494         clk_put(r8a66597->clk);
2495 clean_up2:
2496 #endif
2497         usb_put_hcd(hcd);
2498
2499 clean_up:
2500         if (reg)
2501                 iounmap(reg);
2502
2503         return ret;
2504 }
2505
2506 static struct platform_driver r8a66597_driver = {
2507         .probe =        r8a66597_probe,
2508         .remove =       r8a66597_remove,
2509         .suspend =      r8a66597_suspend,
2510         .resume =       r8a66597_resume,
2511         .driver         = {
2512                 .name = (char *) hcd_name,
2513                 .owner  = THIS_MODULE,
2514         },
2515 };
2516
2517 static int __init r8a66597_init(void)
2518 {
2519         if (usb_disabled())
2520                 return -ENODEV;
2521
2522         printk(KERN_INFO KBUILD_MODNAME ": driver %s, %s\n", hcd_name,
2523                DRIVER_VERSION);
2524         return platform_driver_register(&r8a66597_driver);
2525 }
2526 module_init(r8a66597_init);
2527
2528 static void __exit r8a66597_cleanup(void)
2529 {
2530         platform_driver_unregister(&r8a66597_driver);
2531 }
2532 module_exit(r8a66597_cleanup);
2533