SAFE public projects git trees. - safe/jmp/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
1018 /* this function must be called with interrupt disabled */
1019 static void r8a66597_usb_connect(struct r8a66597 *r8a66597, int port)
1020 {
1021         u16 speed = get_rh_usb_speed(r8a66597, port);
1022         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1023
1024         if (speed == HSMODE)
1025                 rh->port |= (1 << USB_PORT_FEAT_HIGHSPEED);
1026         else if (speed == LSMODE)
1027                 rh->port |= (1 << USB_PORT_FEAT_LOWSPEED);
1028
1029         rh->port &= ~(1 << USB_PORT_FEAT_RESET);
1030         rh->port |= 1 << USB_PORT_FEAT_ENABLE;
1031 }
1032
1033 /* this function must be called with interrupt disabled */
1034 static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597, int port)
1035 {
1036         struct r8a66597_device *dev = r8a66597->root_hub[port].dev;
1037
1038         disable_r8a66597_pipe_all(r8a66597, dev);
1039         free_usb_address(r8a66597, dev);
1040
1041         start_root_hub_sampling(r8a66597, port, 0);
1042 }
1043
1044 /* this function must be called with interrupt disabled */
1045 static void prepare_setup_packet(struct r8a66597 *r8a66597,
1046                                  struct r8a66597_td *td)
1047 {
1048         int i;
1049         __le16 *p = (__le16 *)td->urb->setup_packet;
1050         unsigned long setup_addr = USBREQ;
1051
1052         r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket,
1053                        DCPMAXP);
1054         r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1);
1055
1056         for (i = 0; i < 4; i++) {
1057                 r8a66597_write(r8a66597, le16_to_cpu(p[i]), setup_addr);
1058                 setup_addr += 2;
1059         }
1060         r8a66597_write(r8a66597, SUREQ, DCPCTR);
1061 }
1062
1063 /* this function must be called with interrupt disabled */
1064 static void prepare_packet_read(struct r8a66597 *r8a66597,
1065                                 struct r8a66597_td *td)
1066 {
1067         struct urb *urb = td->urb;
1068
1069         if (usb_pipecontrol(urb->pipe)) {
1070                 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
1071                 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
1072                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1073                 if (urb->actual_length == 0) {
1074                         r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1075                         r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1076                 }
1077                 pipe_irq_disable(r8a66597, td->pipenum);
1078                 pipe_start(r8a66597, td->pipe);
1079                 pipe_irq_enable(r8a66597, urb, td->pipenum);
1080         } else {
1081                 if (urb->actual_length == 0) {
1082                         pipe_irq_disable(r8a66597, td->pipenum);
1083                         pipe_setting(r8a66597, td);
1084                         pipe_stop(r8a66597, td->pipe);
1085                         r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
1086
1087                         if (td->pipe->pipetre) {
1088                                 r8a66597_write(r8a66597, TRCLR,
1089                                                 td->pipe->pipetre);
1090                                 r8a66597_write(r8a66597,
1091                                                 DIV_ROUND_UP
1092                                                   (urb->transfer_buffer_length,
1093                                                    td->maxpacket),
1094                                                 td->pipe->pipetrn);
1095                                 r8a66597_bset(r8a66597, TRENB,
1096                                                 td->pipe->pipetre);
1097                         }
1098
1099                         pipe_start(r8a66597, td->pipe);
1100                         pipe_irq_enable(r8a66597, urb, td->pipenum);
1101                 }
1102         }
1103 }
1104
1105 /* this function must be called with interrupt disabled */
1106 static void prepare_packet_write(struct r8a66597 *r8a66597,
1107                                  struct r8a66597_td *td)
1108 {
1109         u16 tmp;
1110         struct urb *urb = td->urb;
1111
1112         if (usb_pipecontrol(urb->pipe)) {
1113                 pipe_stop(r8a66597, td->pipe);
1114                 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
1115                 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
1116                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1117                 if (urb->actual_length == 0) {
1118                         r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1119                         r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1120                 }
1121         } else {
1122                 if (urb->actual_length == 0)
1123                         pipe_setting(r8a66597, td);
1124                 if (td->pipe->pipetre)
1125                         r8a66597_bclr(r8a66597, TRENB, td->pipe->pipetre);
1126         }
1127         r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
1128
1129         fifo_change_from_pipe(r8a66597, td->pipe);
1130         tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1131         if (unlikely((tmp & FRDY) == 0))
1132                 pipe_irq_enable(r8a66597, urb, td->pipenum);
1133         else
1134                 packet_write(r8a66597, td->pipenum);
1135         pipe_start(r8a66597, td->pipe);
1136 }
1137
1138 /* this function must be called with interrupt disabled */
1139 static void prepare_status_packet(struct r8a66597 *r8a66597,
1140                                   struct r8a66597_td *td)
1141 {
1142         struct urb *urb = td->urb;
1143
1144         r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1145         pipe_stop(r8a66597, td->pipe);
1146
1147         if (urb->setup_packet[0] & USB_ENDPOINT_DIR_MASK) {
1148                 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
1149                 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
1150                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1151                 r8a66597_write(r8a66597, ~BEMP0, BEMPSTS);
1152                 r8a66597_write(r8a66597, BCLR | BVAL, CFIFOCTR);
1153                 enable_irq_empty(r8a66597, 0);
1154         } else {
1155                 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
1156                 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
1157                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1158                 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1159                 enable_irq_ready(r8a66597, 0);
1160         }
1161         enable_irq_nrdy(r8a66597, 0);
1162         pipe_start(r8a66597, td->pipe);
1163 }
1164
1165 static int is_set_address(unsigned char *setup_packet)
1166 {
1167         if (((setup_packet[0] & USB_TYPE_MASK) == USB_TYPE_STANDARD) &&
1168                         setup_packet[1] == USB_REQ_SET_ADDRESS)
1169                 return 1;
1170         else
1171                 return 0;
1172 }
1173
1174 /* this function must be called with interrupt disabled */
1175 static int start_transfer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1176 {
1177         BUG_ON(!td);
1178
1179         switch (td->type) {
1180         case USB_PID_SETUP:
1181                 if (is_set_address(td->urb->setup_packet)) {
1182                         td->set_address = 1;
1183                         td->urb->setup_packet[2] = alloc_usb_address(r8a66597,
1184                                                                      td->urb);
1185                         if (td->urb->setup_packet[2] == 0)
1186                                 return -EPIPE;
1187                 }
1188                 prepare_setup_packet(r8a66597, td);
1189                 break;
1190         case USB_PID_IN:
1191                 prepare_packet_read(r8a66597, td);
1192                 break;
1193         case USB_PID_OUT:
1194                 prepare_packet_write(r8a66597, td);
1195                 break;
1196         case USB_PID_ACK:
1197                 prepare_status_packet(r8a66597, td);
1198                 break;
1199         default:
1200                 printk(KERN_ERR "r8a66597: invalid type.\n");
1201                 break;
1202         }
1203
1204         return 0;
1205 }
1206
1207 static int check_transfer_finish(struct r8a66597_td *td, struct urb *urb)
1208 {
1209         if (usb_pipeisoc(urb->pipe)) {
1210                 if (urb->number_of_packets == td->iso_cnt)
1211                         return 1;
1212         }
1213
1214         /* control or bulk or interrupt */
1215         if ((urb->transfer_buffer_length <= urb->actual_length) ||
1216             (td->short_packet) || (td->zero_packet))
1217                 return 1;
1218
1219         return 0;
1220 }
1221
1222 /* this function must be called with interrupt disabled */
1223 static void set_td_timer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1224 {
1225         unsigned long time;
1226
1227         BUG_ON(!td);
1228
1229         if (!list_empty(&r8a66597->pipe_queue[td->pipenum]) &&
1230             !usb_pipecontrol(td->urb->pipe) && usb_pipein(td->urb->pipe)) {
1231                 r8a66597->timeout_map |= 1 << td->pipenum;
1232                 switch (usb_pipetype(td->urb->pipe)) {
1233                 case PIPE_INTERRUPT:
1234                 case PIPE_ISOCHRONOUS:
1235                         time = 30;
1236                         break;
1237                 default:
1238                         time = 300;
1239                         break;
1240                 }
1241
1242                 mod_timer(&r8a66597->td_timer[td->pipenum],
1243                           jiffies + msecs_to_jiffies(time));
1244         }
1245 }
1246
1247 /* this function must be called with interrupt disabled */
1248 static void finish_request(struct r8a66597 *r8a66597, struct r8a66597_td *td,
1249                 u16 pipenum, struct urb *urb, int status)
1250 __releases(r8a66597->lock) __acquires(r8a66597->lock)
1251 {
1252         int restart = 0;
1253         struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
1254
1255         r8a66597->timeout_map &= ~(1 << pipenum);
1256
1257         if (likely(td)) {
1258                 if (td->set_address && (status != 0 || urb->unlinked))
1259                         r8a66597->address_map &= ~(1 << urb->setup_packet[2]);
1260
1261                 pipe_toggle_save(r8a66597, td->pipe, urb);
1262                 list_del(&td->queue);
1263                 kfree(td);
1264         }
1265
1266         if (!list_empty(&r8a66597->pipe_queue[pipenum]))
1267                 restart = 1;
1268
1269         if (likely(urb)) {
1270                 if (usb_pipeisoc(urb->pipe))
1271                         urb->start_frame = r8a66597_get_frame(hcd);
1272
1273                 usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb);
1274                 spin_unlock(&r8a66597->lock);
1275                 usb_hcd_giveback_urb(hcd, urb, status);
1276                 spin_lock(&r8a66597->lock);
1277         }
1278
1279         if (restart) {
1280                 td = r8a66597_get_td(r8a66597, pipenum);
1281                 if (unlikely(!td))
1282                         return;
1283
1284                 start_transfer(r8a66597, td);
1285                 set_td_timer(r8a66597, td);
1286         }
1287 }
1288
1289 static void packet_read(struct r8a66597 *r8a66597, u16 pipenum)
1290 {
1291         u16 tmp;
1292         int rcv_len, bufsize, urb_len, size;
1293         u16 *buf;
1294         struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1295         struct urb *urb;
1296         int finish = 0;
1297         int status = 0;
1298
1299         if (unlikely(!td))
1300                 return;
1301         urb = td->urb;
1302
1303         fifo_change_from_pipe(r8a66597, td->pipe);
1304         tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1305         if (unlikely((tmp & FRDY) == 0)) {
1306                 pipe_stop(r8a66597, td->pipe);
1307                 pipe_irq_disable(r8a66597, pipenum);
1308                 printk(KERN_ERR "r8a66597: in fifo not ready (%d)\n", pipenum);
1309                 finish_request(r8a66597, td, pipenum, td->urb, -EPIPE);
1310                 return;
1311         }
1312
1313         /* prepare parameters */
1314         rcv_len = tmp & DTLN;
1315         if (usb_pipeisoc(urb->pipe)) {
1316                 buf = (u16 *)(urb->transfer_buffer +
1317                                 urb->iso_frame_desc[td->iso_cnt].offset);
1318                 urb_len = urb->iso_frame_desc[td->iso_cnt].length;
1319         } else {
1320                 buf = (void *)urb->transfer_buffer + urb->actual_length;
1321                 urb_len = urb->transfer_buffer_length - urb->actual_length;
1322         }
1323         bufsize = min(urb_len, (int) td->maxpacket);
1324         if (rcv_len <= bufsize) {
1325                 size = rcv_len;
1326         } else {
1327                 size = bufsize;
1328                 status = -EOVERFLOW;
1329                 finish = 1;
1330         }
1331
1332         /* update parameters */
1333         urb->actual_length += size;
1334         if (rcv_len == 0)
1335                 td->zero_packet = 1;
1336         if (rcv_len < bufsize) {
1337                 td->short_packet = 1;
1338         }
1339         if (usb_pipeisoc(urb->pipe)) {
1340                 urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1341                 urb->iso_frame_desc[td->iso_cnt].status = status;
1342                 td->iso_cnt++;
1343                 finish = 0;
1344         }
1345
1346         /* check transfer finish */
1347         if (finish || check_transfer_finish(td, urb)) {
1348                 pipe_stop(r8a66597, td->pipe);
1349                 pipe_irq_disable(r8a66597, pipenum);
1350                 finish = 1;
1351         }
1352
1353         /* read fifo */
1354         if (urb->transfer_buffer) {
1355                 if (size == 0)
1356                         r8a66597_write(r8a66597, BCLR, td->pipe->fifoctr);
1357                 else
1358                         r8a66597_read_fifo(r8a66597, td->pipe->fifoaddr,
1359                                            buf, size);
1360         }
1361
1362         if (finish && pipenum != 0)
1363                 finish_request(r8a66597, td, pipenum, urb, status);
1364 }
1365
1366 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum)
1367 {
1368         u16 tmp;
1369         int bufsize, size;
1370         u16 *buf;
1371         struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1372         struct urb *urb;
1373
1374         if (unlikely(!td))
1375                 return;
1376         urb = td->urb;
1377
1378         fifo_change_from_pipe(r8a66597, td->pipe);
1379         tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1380         if (unlikely((tmp & FRDY) == 0)) {
1381                 pipe_stop(r8a66597, td->pipe);
1382                 pipe_irq_disable(r8a66597, pipenum);
1383                 printk(KERN_ERR "r8a66597: out fifo not ready (%d)\n", pipenum);
1384                 finish_request(r8a66597, td, pipenum, urb, -EPIPE);
1385                 return;
1386         }
1387
1388         /* prepare parameters */
1389         bufsize = td->maxpacket;
1390         if (usb_pipeisoc(urb->pipe)) {
1391                 buf = (u16 *)(urb->transfer_buffer +
1392                                 urb->iso_frame_desc[td->iso_cnt].offset);
1393                 size = min(bufsize,
1394                            (int)urb->iso_frame_desc[td->iso_cnt].length);
1395         } else {
1396                 buf = (u16 *)(urb->transfer_buffer + urb->actual_length);
1397                 size = min_t(u32, bufsize,
1398                            urb->transfer_buffer_length - urb->actual_length);
1399         }
1400
1401         /* write fifo */
1402         if (pipenum > 0)
1403                 r8a66597_write(r8a66597, ~(1 << pipenum), BEMPSTS);
1404         if (urb->transfer_buffer) {
1405                 r8a66597_write_fifo(r8a66597, td->pipe->fifoaddr, buf, size);
1406                 if (!usb_pipebulk(urb->pipe) || td->maxpacket != size)
1407                         r8a66597_write(r8a66597, BVAL, td->pipe->fifoctr);
1408         }
1409
1410         /* update parameters */
1411         urb->actual_length += size;
1412         if (usb_pipeisoc(urb->pipe)) {
1413                 urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1414                 urb->iso_frame_desc[td->iso_cnt].status = 0;
1415                 td->iso_cnt++;
1416         }
1417
1418         /* check transfer finish */
1419         if (check_transfer_finish(td, urb)) {
1420                 disable_irq_ready(r8a66597, pipenum);
1421                 enable_irq_empty(r8a66597, pipenum);
1422                 if (!usb_pipeisoc(urb->pipe))
1423                         enable_irq_nrdy(r8a66597, pipenum);
1424         } else
1425                 pipe_irq_enable(r8a66597, urb, pipenum);
1426 }
1427
1428
1429 static void check_next_phase(struct r8a66597 *r8a66597, int status)
1430 {
1431         struct r8a66597_td *td = r8a66597_get_td(r8a66597, 0);
1432         struct urb *urb;
1433         u8 finish = 0;
1434
1435         if (unlikely(!td))
1436                 return;
1437         urb = td->urb;
1438
1439         switch (td->type) {
1440         case USB_PID_IN:
1441         case USB_PID_OUT:
1442                 if (check_transfer_finish(td, urb))
1443                         td->type = USB_PID_ACK;
1444                 break;
1445         case USB_PID_SETUP:
1446                 if (urb->transfer_buffer_length == urb->actual_length)
1447                         td->type = USB_PID_ACK;
1448                 else if (usb_pipeout(urb->pipe))
1449                         td->type = USB_PID_OUT;
1450                 else
1451                         td->type = USB_PID_IN;
1452                 break;
1453         case USB_PID_ACK:
1454                 finish = 1;
1455                 break;
1456         }
1457
1458         if (finish || status != 0 || urb->unlinked)
1459                 finish_request(r8a66597, td, 0, urb, status);
1460         else
1461                 start_transfer(r8a66597, td);
1462 }
1463
1464 static int get_urb_error(struct r8a66597 *r8a66597, u16 pipenum)
1465 {
1466         struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1467
1468         if (td) {
1469                 u16 pid = r8a66597_read(r8a66597, td->pipe->pipectr) & PID;
1470
1471                 if (pid == PID_NAK)
1472                         return -ECONNRESET;
1473                 else
1474                         return -EPIPE;
1475         }
1476         return 0;
1477 }
1478
1479 static void irq_pipe_ready(struct r8a66597 *r8a66597)
1480 {
1481         u16 check;
1482         u16 pipenum;
1483         u16 mask;
1484         struct r8a66597_td *td;
1485
1486         mask = r8a66597_read(r8a66597, BRDYSTS)
1487                & r8a66597_read(r8a66597, BRDYENB);
1488         r8a66597_write(r8a66597, ~mask, BRDYSTS);
1489         if (mask & BRDY0) {
1490                 td = r8a66597_get_td(r8a66597, 0);
1491                 if (td && td->type == USB_PID_IN)
1492                         packet_read(r8a66597, 0);
1493                 else
1494                         pipe_irq_disable(r8a66597, 0);
1495                 check_next_phase(r8a66597, 0);
1496         }
1497
1498         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1499                 check = 1 << pipenum;
1500                 if (mask & check) {
1501                         td = r8a66597_get_td(r8a66597, pipenum);
1502                         if (unlikely(!td))
1503                                 continue;
1504
1505                         if (td->type == USB_PID_IN)
1506                                 packet_read(r8a66597, pipenum);
1507                         else if (td->type == USB_PID_OUT)
1508                                 packet_write(r8a66597, pipenum);
1509                 }
1510         }
1511 }
1512
1513 static void irq_pipe_empty(struct r8a66597 *r8a66597)
1514 {
1515         u16 tmp;
1516         u16 check;
1517         u16 pipenum;
1518         u16 mask;
1519         struct r8a66597_td *td;
1520
1521         mask = r8a66597_read(r8a66597, BEMPSTS)
1522                & r8a66597_read(r8a66597, BEMPENB);
1523         r8a66597_write(r8a66597, ~mask, BEMPSTS);
1524         if (mask & BEMP0) {
1525                 cfifo_change(r8a66597, 0);
1526                 td = r8a66597_get_td(r8a66597, 0);
1527                 if (td && td->type != USB_PID_OUT)
1528                         disable_irq_empty(r8a66597, 0);
1529                 check_next_phase(r8a66597, 0);
1530         }
1531
1532         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1533                 check = 1 << pipenum;
1534                 if (mask &  check) {
1535                         struct r8a66597_td *td;
1536                         td = r8a66597_get_td(r8a66597, pipenum);
1537                         if (unlikely(!td))
1538                                 continue;
1539
1540                         tmp = r8a66597_read(r8a66597, td->pipe->pipectr);
1541                         if ((tmp & INBUFM) == 0) {
1542                                 disable_irq_empty(r8a66597, pipenum);
1543                                 pipe_irq_disable(r8a66597, pipenum);
1544                                 finish_request(r8a66597, td, pipenum, td->urb,
1545                                                 0);
1546                         }
1547                 }
1548         }
1549 }
1550
1551 static void irq_pipe_nrdy(struct r8a66597 *r8a66597)
1552 {
1553         u16 check;
1554         u16 pipenum;
1555         u16 mask;
1556         int status;
1557
1558         mask = r8a66597_read(r8a66597, NRDYSTS)
1559                & r8a66597_read(r8a66597, NRDYENB);
1560         r8a66597_write(r8a66597, ~mask, NRDYSTS);
1561         if (mask & NRDY0) {
1562                 cfifo_change(r8a66597, 0);
1563                 status = get_urb_error(r8a66597, 0);
1564                 pipe_irq_disable(r8a66597, 0);
1565                 check_next_phase(r8a66597, status);
1566         }
1567
1568         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1569                 check = 1 << pipenum;
1570                 if (mask & check) {
1571                         struct r8a66597_td *td;
1572                         td = r8a66597_get_td(r8a66597, pipenum);
1573                         if (unlikely(!td))
1574                                 continue;
1575
1576                         status = get_urb_error(r8a66597, pipenum);
1577                         pipe_irq_disable(r8a66597, pipenum);
1578                         pipe_stop(r8a66597, td->pipe);
1579                         finish_request(r8a66597, td, pipenum, td->urb, status);
1580                 }
1581         }
1582 }
1583
1584 static irqreturn_t r8a66597_irq(struct usb_hcd *hcd)
1585 {
1586         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1587         u16 intsts0, intsts1, intsts2;
1588         u16 intenb0, intenb1, intenb2;
1589         u16 mask0, mask1, mask2;
1590         int status;
1591
1592         spin_lock(&r8a66597->lock);
1593
1594         intsts0 = r8a66597_read(r8a66597, INTSTS0);
1595         intsts1 = r8a66597_read(r8a66597, INTSTS1);
1596         intsts2 = r8a66597_read(r8a66597, INTSTS2);
1597         intenb0 = r8a66597_read(r8a66597, INTENB0);
1598         intenb1 = r8a66597_read(r8a66597, INTENB1);
1599         intenb2 = r8a66597_read(r8a66597, INTENB2);
1600
1601         mask2 = intsts2 & intenb2;
1602         mask1 = intsts1 & intenb1;
1603         mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY);
1604         if (mask2) {
1605                 if (mask2 & ATTCH) {
1606                         r8a66597_write(r8a66597, ~ATTCH, INTSTS2);
1607                         r8a66597_bclr(r8a66597, ATTCHE, INTENB2);
1608
1609                         /* start usb bus sampling */
1610                         start_root_hub_sampling(r8a66597, 1, 1);
1611                 }
1612                 if (mask2 & DTCH) {
1613                         r8a66597_write(r8a66597, ~DTCH, INTSTS2);
1614                         r8a66597_bclr(r8a66597, DTCHE, INTENB2);
1615                         r8a66597_usb_disconnect(r8a66597, 1);
1616                 }
1617         }
1618
1619         if (mask1) {
1620                 if (mask1 & ATTCH) {
1621                         r8a66597_write(r8a66597, ~ATTCH, INTSTS1);
1622                         r8a66597_bclr(r8a66597, ATTCHE, INTENB1);
1623
1624                         /* start usb bus sampling */
1625                         start_root_hub_sampling(r8a66597, 0, 1);
1626                 }
1627                 if (mask1 & DTCH) {
1628                         r8a66597_write(r8a66597, ~DTCH, INTSTS1);
1629                         r8a66597_bclr(r8a66597, DTCHE, INTENB1);
1630                         r8a66597_usb_disconnect(r8a66597, 0);
1631                 }
1632                 if (mask1 & SIGN) {
1633                         r8a66597_write(r8a66597, ~SIGN, INTSTS1);
1634                         status = get_urb_error(r8a66597, 0);
1635                         check_next_phase(r8a66597, status);
1636                 }
1637                 if (mask1 & SACK) {
1638                         r8a66597_write(r8a66597, ~SACK, INTSTS1);
1639                         check_next_phase(r8a66597, 0);
1640                 }
1641         }
1642         if (mask0) {
1643                 if (mask0 & BRDY)
1644                         irq_pipe_ready(r8a66597);
1645                 if (mask0 & BEMP)
1646                         irq_pipe_empty(r8a66597);
1647                 if (mask0 & NRDY)
1648                         irq_pipe_nrdy(r8a66597);
1649         }
1650
1651         spin_unlock(&r8a66597->lock);
1652         return IRQ_HANDLED;
1653 }
1654
1655 /* this function must be called with interrupt disabled */
1656 static void r8a66597_root_hub_control(struct r8a66597 *r8a66597, int port)
1657 {
1658         u16 tmp;
1659         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1660
1661         if (rh->port & (1 << USB_PORT_FEAT_RESET)) {
1662                 unsigned long dvstctr_reg = get_dvstctr_reg(port);
1663
1664                 tmp = r8a66597_read(r8a66597, dvstctr_reg);
1665                 if ((tmp & USBRST) == USBRST) {
1666                         r8a66597_mdfy(r8a66597, UACT, USBRST | UACT,
1667                                       dvstctr_reg);
1668                         r8a66597_root_hub_start_polling(r8a66597);
1669                 } else
1670                         r8a66597_usb_connect(r8a66597, port);
1671         }
1672
1673         if (!(rh->port & (1 << USB_PORT_FEAT_CONNECTION))) {
1674                 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port));
1675                 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
1676         }
1677
1678         if (rh->scount > 0) {
1679                 tmp = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
1680                 if (tmp == rh->old_syssts) {
1681                         rh->scount--;
1682                         if (rh->scount == 0)
1683                                 r8a66597_check_syssts(r8a66597, port, tmp);
1684                         else
1685                                 r8a66597_root_hub_start_polling(r8a66597);
1686                 } else {
1687                         rh->scount = R8A66597_MAX_SAMPLING;
1688                         rh->old_syssts = tmp;
1689                         r8a66597_root_hub_start_polling(r8a66597);
1690                 }
1691         }
1692 }
1693
1694 static void r8a66597_interval_timer(unsigned long _r8a66597)
1695 {
1696         struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1697         unsigned long flags;
1698         u16 pipenum;
1699         struct r8a66597_td *td;
1700
1701         spin_lock_irqsave(&r8a66597->lock, flags);
1702
1703         for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1704                 if (!(r8a66597->interval_map & (1 << pipenum)))
1705                         continue;
1706                 if (timer_pending(&r8a66597->interval_timer[pipenum]))
1707                         continue;
1708
1709                 td = r8a66597_get_td(r8a66597, pipenum);
1710                 if (td)
1711                         start_transfer(r8a66597, td);
1712         }
1713
1714         spin_unlock_irqrestore(&r8a66597->lock, flags);
1715 }
1716
1717 static void r8a66597_td_timer(unsigned long _r8a66597)
1718 {
1719         struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1720         unsigned long flags;
1721         u16 pipenum;
1722         struct r8a66597_td *td, *new_td = NULL;
1723         struct r8a66597_pipe *pipe;
1724
1725         spin_lock_irqsave(&r8a66597->lock, flags);
1726         for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1727                 if (!(r8a66597->timeout_map & (1 << pipenum)))
1728                         continue;
1729                 if (timer_pending(&r8a66597->td_timer[pipenum]))
1730                         continue;
1731
1732                 td = r8a66597_get_td(r8a66597, pipenum);
1733                 if (!td) {
1734                         r8a66597->timeout_map &= ~(1 << pipenum);
1735                         continue;
1736                 }
1737
1738                 if (td->urb->actual_length) {
1739                         set_td_timer(r8a66597, td);
1740                         break;
1741                 }
1742
1743                 pipe = td->pipe;
1744                 pipe_stop(r8a66597, pipe);
1745
1746                 new_td = td;
1747                 do {
1748                         list_move_tail(&new_td->queue,
1749                                        &r8a66597->pipe_queue[pipenum]);
1750                         new_td = r8a66597_get_td(r8a66597, pipenum);
1751                         if (!new_td) {
1752                                 new_td = td;
1753                                 break;
1754                         }
1755                 } while (td != new_td && td->address == new_td->address);
1756
1757                 start_transfer(r8a66597, new_td);
1758
1759                 if (td == new_td)
1760                         r8a66597->timeout_map &= ~(1 << pipenum);
1761                 else
1762                         set_td_timer(r8a66597, new_td);
1763                 break;
1764         }
1765         spin_unlock_irqrestore(&r8a66597->lock, flags);
1766 }
1767
1768 static void r8a66597_timer(unsigned long _r8a66597)
1769 {
1770         struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1771         unsigned long flags;
1772         int port;
1773
1774         spin_lock_irqsave(&r8a66597->lock, flags);
1775
1776         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
1777                 r8a66597_root_hub_control(r8a66597, port);
1778
1779         spin_unlock_irqrestore(&r8a66597->lock, flags);
1780 }
1781
1782 static int check_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
1783 {
1784         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
1785
1786         if (dev && dev->address && dev->state != USB_STATE_CONFIGURED &&
1787             (urb->dev->state == USB_STATE_CONFIGURED))
1788                 return 1;
1789         else
1790                 return 0;
1791 }
1792
1793 static int r8a66597_start(struct usb_hcd *hcd)
1794 {
1795         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1796
1797         hcd->state = HC_STATE_RUNNING;
1798         return enable_controller(r8a66597);
1799 }
1800
1801 static void r8a66597_stop(struct usb_hcd *hcd)
1802 {
1803         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1804
1805         disable_controller(r8a66597);
1806 }
1807
1808 static void set_address_zero(struct r8a66597 *r8a66597, struct urb *urb)
1809 {
1810         unsigned int usb_address = usb_pipedevice(urb->pipe);
1811         u16 root_port, hub_port;
1812
1813         if (usb_address == 0) {
1814                 get_port_number(urb->dev->devpath,
1815                                 &root_port, &hub_port);
1816                 set_devadd_reg(r8a66597, 0,
1817                                get_r8a66597_usb_speed(urb->dev->speed),
1818                                get_parent_r8a66597_address(r8a66597, urb->dev),
1819                                hub_port, root_port);
1820         }
1821 }
1822
1823 static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597,
1824                                             struct urb *urb,
1825                                             struct usb_host_endpoint *hep)
1826 {
1827         struct r8a66597_td *td;
1828         u16 pipenum;
1829
1830         td = kzalloc(sizeof(struct r8a66597_td), GFP_ATOMIC);
1831         if (td == NULL)
1832                 return NULL;
1833
1834         pipenum = r8a66597_get_pipenum(urb, hep);
1835         td->pipenum = pipenum;
1836         td->pipe = hep->hcpriv;
1837         td->urb = urb;
1838         td->address = get_urb_to_r8a66597_addr(r8a66597, urb);
1839         td->maxpacket = usb_maxpacket(urb->dev, urb->pipe,
1840                                       !usb_pipein(urb->pipe));
1841         if (usb_pipecontrol(urb->pipe))
1842                 td->type = USB_PID_SETUP;
1843         else if (usb_pipein(urb->pipe))
1844                 td->type = USB_PID_IN;
1845         else
1846                 td->type = USB_PID_OUT;
1847         INIT_LIST_HEAD(&td->queue);
1848
1849         return td;
1850 }
1851
1852 static int r8a66597_urb_enqueue(struct usb_hcd *hcd,
1853                                 struct urb *urb,
1854                                 gfp_t mem_flags)
1855 {
1856         struct usb_host_endpoint *hep = urb->ep;
1857         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1858         struct r8a66597_td *td = NULL;
1859         int ret, request = 0;
1860         unsigned long flags;
1861
1862         spin_lock_irqsave(&r8a66597->lock, flags);
1863         if (!get_urb_to_r8a66597_dev(r8a66597, urb)) {
1864                 ret = -ENODEV;
1865                 goto error_not_linked;
1866         }
1867
1868         ret = usb_hcd_link_urb_to_ep(hcd, urb);
1869         if (ret)
1870                 goto error_not_linked;
1871
1872         if (!hep->hcpriv) {
1873                 hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe),
1874                                 GFP_ATOMIC);
1875                 if (!hep->hcpriv) {
1876                         ret = -ENOMEM;
1877                         goto error;
1878                 }
1879                 set_pipe_reg_addr(hep->hcpriv, R8A66597_PIPE_NO_DMA);
1880                 if (usb_pipeendpoint(urb->pipe))
1881                         init_pipe_info(r8a66597, urb, hep, &hep->desc);
1882         }
1883
1884         if (unlikely(check_pipe_config(r8a66597, urb)))
1885                 init_pipe_config(r8a66597, urb);
1886
1887         set_address_zero(r8a66597, urb);
1888         td = r8a66597_make_td(r8a66597, urb, hep);
1889         if (td == NULL) {
1890                 ret = -ENOMEM;
1891                 goto error;
1892         }
1893         if (list_empty(&r8a66597->pipe_queue[td->pipenum]))
1894                 request = 1;
1895         list_add_tail(&td->queue, &r8a66597->pipe_queue[td->pipenum]);
1896         urb->hcpriv = td;
1897
1898         if (request) {
1899                 if (td->pipe->info.timer_interval) {
1900                         r8a66597->interval_map |= 1 << td->pipenum;
1901                         mod_timer(&r8a66597->interval_timer[td->pipenum],
1902                                   jiffies + msecs_to_jiffies(
1903                                         td->pipe->info.timer_interval));
1904                 } else {
1905                         ret = start_transfer(r8a66597, td);
1906                         if (ret < 0) {
1907                                 list_del(&td->queue);
1908                                 kfree(td);
1909                         }
1910                 }
1911         } else
1912                 set_td_timer(r8a66597, td);
1913
1914 error:
1915         if (ret)
1916                 usb_hcd_unlink_urb_from_ep(hcd, urb);
1917 error_not_linked:
1918         spin_unlock_irqrestore(&r8a66597->lock, flags);
1919         return ret;
1920 }
1921
1922 static int r8a66597_urb_dequeue(struct usb_hcd *hcd, struct urb *urb,
1923                 int status)
1924 {
1925         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1926         struct r8a66597_td *td;
1927         unsigned long flags;
1928         int rc;
1929
1930         spin_lock_irqsave(&r8a66597->lock, flags);
1931         rc = usb_hcd_check_unlink_urb(hcd, urb, status);
1932         if (rc)
1933                 goto done;
1934
1935         if (urb->hcpriv) {
1936                 td = urb->hcpriv;
1937                 pipe_stop(r8a66597, td->pipe);
1938                 pipe_irq_disable(r8a66597, td->pipenum);
1939                 disable_irq_empty(r8a66597, td->pipenum);
1940                 finish_request(r8a66597, td, td->pipenum, urb, status);
1941         }
1942  done:
1943         spin_unlock_irqrestore(&r8a66597->lock, flags);
1944         return rc;
1945 }
1946
1947 static void r8a66597_endpoint_disable(struct usb_hcd *hcd,
1948                                       struct usb_host_endpoint *hep)
1949 {
1950         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1951         struct r8a66597_pipe *pipe = (struct r8a66597_pipe *)hep->hcpriv;
1952         struct r8a66597_td *td;
1953         struct urb *urb = NULL;
1954         u16 pipenum;
1955         unsigned long flags;
1956
1957         if (pipe == NULL)
1958                 return;
1959         pipenum = pipe->info.pipenum;
1960
1961         if (pipenum == 0) {
1962                 kfree(hep->hcpriv);
1963                 hep->hcpriv = NULL;
1964                 return;
1965         }
1966
1967         spin_lock_irqsave(&r8a66597->lock, flags);
1968         pipe_stop(r8a66597, pipe);
1969         pipe_irq_disable(r8a66597, pipenum);
1970         disable_irq_empty(r8a66597, pipenum);
1971         td = r8a66597_get_td(r8a66597, pipenum);
1972         if (td)
1973                 urb = td->urb;
1974         finish_request(r8a66597, td, pipenum, urb, -ESHUTDOWN);
1975         kfree(hep->hcpriv);
1976         hep->hcpriv = NULL;
1977         spin_unlock_irqrestore(&r8a66597->lock, flags);
1978 }
1979
1980 static int r8a66597_get_frame(struct usb_hcd *hcd)
1981 {
1982         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1983         return r8a66597_read(r8a66597, FRMNUM) & 0x03FF;
1984 }
1985
1986 static void collect_usb_address_map(struct usb_device *udev, unsigned long *map)
1987 {
1988         int chix;
1989
1990         if (udev->state == USB_STATE_CONFIGURED &&
1991             udev->parent && udev->parent->devnum > 1 &&
1992             udev->parent->descriptor.bDeviceClass == USB_CLASS_HUB)
1993                 map[udev->devnum/32] |= (1 << (udev->devnum % 32));
1994
1995         for (chix = 0; chix < udev->maxchild; chix++) {
1996                 struct usb_device *childdev = udev->children[chix];
1997
1998                 if (childdev)
1999                         collect_usb_address_map(childdev, map);
2000         }
2001 }
2002
2003 /* this function must be called with interrupt disabled */
2004 static struct r8a66597_device *get_r8a66597_device(struct r8a66597 *r8a66597,
2005                                                    int addr)
2006 {
2007         struct r8a66597_device *dev;
2008         struct list_head *list = &r8a66597->child_device;
2009
2010         list_for_each_entry(dev, list, device_list) {
2011                 if (!dev)
2012                         continue;
2013                 if (dev->usb_address != addr)
2014                         continue;
2015
2016                 return dev;
2017         }
2018
2019         printk(KERN_ERR "r8a66597: get_r8a66597_device fail.(%d)\n", addr);
2020         return NULL;
2021 }
2022
2023 static void update_usb_address_map(struct r8a66597 *r8a66597,
2024                                    struct usb_device *root_hub,
2025                                    unsigned long *map)
2026 {
2027         int i, j, addr;
2028         unsigned long diff;
2029         unsigned long flags;
2030
2031         for (i = 0; i < 4; i++) {
2032                 diff = r8a66597->child_connect_map[i] ^ map[i];
2033                 if (!diff)
2034                         continue;
2035
2036                 for (j = 0; j < 32; j++) {
2037                         if (!(diff & (1 << j)))
2038                                 continue;
2039
2040                         addr = i * 32 + j;
2041                         if (map[i] & (1 << j))
2042                                 set_child_connect_map(r8a66597, addr);
2043                         else {
2044                                 struct r8a66597_device *dev;
2045
2046                                 spin_lock_irqsave(&r8a66597->lock, flags);
2047                                 dev = get_r8a66597_device(r8a66597, addr);
2048                                 disable_r8a66597_pipe_all(r8a66597, dev);
2049                                 free_usb_address(r8a66597, dev);
2050                                 put_child_connect_map(r8a66597, addr);
2051                                 spin_unlock_irqrestore(&r8a66597->lock, flags);
2052                         }
2053                 }
2054         }
2055 }
2056
2057 static void r8a66597_check_detect_child(struct r8a66597 *r8a66597,
2058                                         struct usb_hcd *hcd)
2059 {
2060         struct usb_bus *bus;
2061         unsigned long now_map[4];
2062
2063         memset(now_map, 0, sizeof(now_map));
2064
2065         list_for_each_entry(bus, &usb_bus_list, bus_list) {
2066                 if (!bus->root_hub)
2067                         continue;
2068
2069                 if (bus->busnum != hcd->self.busnum)
2070                         continue;
2071
2072                 collect_usb_address_map(bus->root_hub, now_map);
2073                 update_usb_address_map(r8a66597, bus->root_hub, now_map);
2074         }
2075 }
2076
2077 static int r8a66597_hub_status_data(struct usb_hcd *hcd, char *buf)
2078 {
2079         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2080         unsigned long flags;
2081         int i;
2082
2083         r8a66597_check_detect_child(r8a66597, hcd);
2084
2085         spin_lock_irqsave(&r8a66597->lock, flags);
2086
2087         *buf = 0;       /* initialize (no change) */
2088
2089         for (i = 0; i < R8A66597_MAX_ROOT_HUB; i++) {
2090                 if (r8a66597->root_hub[i].port & 0xffff0000)
2091                         *buf |= 1 << (i + 1);
2092         }
2093
2094         spin_unlock_irqrestore(&r8a66597->lock, flags);
2095
2096         return (*buf != 0);
2097 }
2098
2099 static void r8a66597_hub_descriptor(struct r8a66597 *r8a66597,
2100                                     struct usb_hub_descriptor *desc)
2101 {
2102         desc->bDescriptorType = 0x29;
2103         desc->bHubContrCurrent = 0;
2104         desc->bNbrPorts = R8A66597_MAX_ROOT_HUB;
2105         desc->bDescLength = 9;
2106         desc->bPwrOn2PwrGood = 0;
2107         desc->wHubCharacteristics = cpu_to_le16(0x0011);
2108         desc->bitmap[0] = ((1 << R8A66597_MAX_ROOT_HUB) - 1) << 1;
2109         desc->bitmap[1] = ~0;
2110 }
2111
2112 static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
2113                                 u16 wIndex, char *buf, u16 wLength)
2114 {
2115         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2116         int ret;
2117         int port = (wIndex & 0x00FF) - 1;
2118         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
2119         unsigned long flags;
2120
2121         ret = 0;
2122
2123         spin_lock_irqsave(&r8a66597->lock, flags);
2124         switch (typeReq) {
2125         case ClearHubFeature:
2126         case SetHubFeature:
2127                 switch (wValue) {
2128                 case C_HUB_OVER_CURRENT:
2129                 case C_HUB_LOCAL_POWER:
2130                         break;
2131                 default:
2132                         goto error;
2133                 }
2134                 break;
2135         case ClearPortFeature:
2136                 if (wIndex > R8A66597_MAX_ROOT_HUB)
2137                         goto error;
2138                 if (wLength != 0)
2139                         goto error;
2140
2141                 switch (wValue) {
2142                 case USB_PORT_FEAT_ENABLE:
2143                         rh->port &= (1 << USB_PORT_FEAT_POWER);
2144                         break;
2145                 case USB_PORT_FEAT_SUSPEND:
2146                         break;
2147                 case USB_PORT_FEAT_POWER:
2148                         r8a66597_port_power(r8a66597, port, 0);
2149                         break;
2150                 case USB_PORT_FEAT_C_ENABLE:
2151                 case USB_PORT_FEAT_C_SUSPEND:
2152                 case USB_PORT_FEAT_C_CONNECTION:
2153                 case USB_PORT_FEAT_C_OVER_CURRENT:
2154                 case USB_PORT_FEAT_C_RESET:
2155                         break;
2156                 default:
2157                         goto error;
2158                 }
2159                 rh->port &= ~(1 << wValue);
2160                 break;
2161         case GetHubDescriptor:
2162                 r8a66597_hub_descriptor(r8a66597,
2163                                         (struct usb_hub_descriptor *)buf);
2164                 break;
2165         case GetHubStatus:
2166                 *buf = 0x00;
2167                 break;
2168         case GetPortStatus:
2169                 if (wIndex > R8A66597_MAX_ROOT_HUB)
2170                         goto error;
2171                 *(__le32 *)buf = cpu_to_le32(rh->port);
2172                 break;
2173         case SetPortFeature:
2174                 if (wIndex > R8A66597_MAX_ROOT_HUB)
2175                         goto error;
2176                 if (wLength != 0)
2177                         goto error;
2178
2179                 switch (wValue) {
2180                 case USB_PORT_FEAT_SUSPEND:
2181                         break;
2182                 case USB_PORT_FEAT_POWER:
2183                         r8a66597_port_power(r8a66597, port, 1);
2184                         rh->port |= (1 << USB_PORT_FEAT_POWER);
2185                         break;
2186                 case USB_PORT_FEAT_RESET: {
2187                         struct r8a66597_device *dev = rh->dev;
2188
2189                         rh->port |= (1 << USB_PORT_FEAT_RESET);
2190
2191                         disable_r8a66597_pipe_all(r8a66597, dev);
2192                         free_usb_address(r8a66597, dev);
2193
2194                         r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT,
2195                                       get_dvstctr_reg(port));
2196                         mod_timer(&r8a66597->rh_timer,
2197                                   jiffies + msecs_to_jiffies(50));
2198                         }
2199                         break;
2200                 default:
2201                         goto error;
2202                 }
2203                 rh->port |= 1 << wValue;
2204                 break;
2205         default:
2206 error:
2207                 ret = -EPIPE;
2208                 break;
2209         }
2210
2211         spin_unlock_irqrestore(&r8a66597->lock, flags);
2212         return ret;
2213 }
2214
2215 static struct hc_driver r8a66597_hc_driver = {
2216         .description =          hcd_name,
2217         .hcd_priv_size =        sizeof(struct r8a66597),
2218         .irq =                  r8a66597_irq,
2219
2220         /*
2221          * generic hardware linkage
2222          */
2223         .flags =                HCD_USB2,
2224
2225         .start =                r8a66597_start,
2226         .stop =                 r8a66597_stop,
2227
2228         /*
2229          * managing i/o requests and associated device resources
2230          */
2231         .urb_enqueue =          r8a66597_urb_enqueue,
2232         .urb_dequeue =          r8a66597_urb_dequeue,
2233         .endpoint_disable =     r8a66597_endpoint_disable,
2234
2235         /*
2236          * periodic schedule support
2237          */
2238         .get_frame_number =     r8a66597_get_frame,
2239
2240         /*
2241          * root hub support
2242          */
2243         .hub_status_data =      r8a66597_hub_status_data,
2244         .hub_control =          r8a66597_hub_control,
2245 };
2246
2247 #if defined(CONFIG_PM)
2248 static int r8a66597_suspend(struct platform_device *pdev, pm_message_t state)
2249 {
2250         return 0;
2251 }
2252
2253 static int r8a66597_resume(struct platform_device *pdev)
2254 {
2255         return 0;
2256 }
2257 #else   /* if defined(CONFIG_PM) */
2258 #define r8a66597_suspend        NULL
2259 #define r8a66597_resume         NULL
2260 #endif
2261
2262 static int __init_or_module r8a66597_remove(struct platform_device *pdev)
2263 {
2264         struct r8a66597         *r8a66597 = dev_get_drvdata(&pdev->dev);
2265         struct usb_hcd          *hcd = r8a66597_to_hcd(r8a66597);
2266
2267         del_timer_sync(&r8a66597->rh_timer);
2268         usb_remove_hcd(hcd);
2269         iounmap((void *)r8a66597->reg);
2270 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) && defined(CONFIG_HAVE_CLK)
2271         clk_put(r8a66597->clk);
2272 #endif
2273         usb_put_hcd(hcd);
2274         return 0;
2275 }
2276
2277 static int __init r8a66597_probe(struct platform_device *pdev)
2278 {
2279 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) && defined(CONFIG_HAVE_CLK)
2280         char clk_name[8];
2281 #endif
2282         struct resource *res = NULL, *ires;
2283         int irq = -1;
2284         void __iomem *reg = NULL;
2285         struct usb_hcd *hcd = NULL;
2286         struct r8a66597 *r8a66597;
2287         int ret = 0;
2288         int i;
2289         unsigned long irq_trigger;
2290
2291         if (pdev->dev.dma_mask) {
2292                 ret = -EINVAL;
2293                 dev_err(&pdev->dev, "dma not supported\n");
2294                 goto clean_up;
2295         }
2296
2297         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2298         if (!res) {
2299                 ret = -ENODEV;
2300                 dev_err(&pdev->dev, "platform_get_resource error.\n");
2301                 goto clean_up;
2302         }
2303
2304         ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
2305         if (!ires) {
2306                 ret = -ENODEV;
2307                 dev_err(&pdev->dev,
2308                         "platform_get_resource IORESOURCE_IRQ error.\n");
2309                 goto clean_up;
2310         }
2311
2312         irq = ires->start;
2313         irq_trigger = ires->flags & IRQF_TRIGGER_MASK;
2314
2315         reg = ioremap(res->start, resource_size(res));
2316         if (reg == NULL) {
2317                 ret = -ENOMEM;
2318                 dev_err(&pdev->dev, "ioremap error.\n");
2319                 goto clean_up;
2320         }
2321
2322         /* initialize hcd */
2323         hcd = usb_create_hcd(&r8a66597_hc_driver, &pdev->dev, (char *)hcd_name);
2324         if (!hcd) {
2325                 ret = -ENOMEM;
2326                 dev_err(&pdev->dev, "Failed to create hcd\n");
2327                 goto clean_up;
2328         }
2329         r8a66597 = hcd_to_r8a66597(hcd);
2330         memset(r8a66597, 0, sizeof(struct r8a66597));
2331         dev_set_drvdata(&pdev->dev, r8a66597);
2332
2333 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) && defined(CONFIG_HAVE_CLK)
2334         snprintf(clk_name, sizeof(clk_name), "usb%d", pdev->id);
2335         r8a66597->clk = clk_get(&pdev->dev, clk_name);
2336         if (IS_ERR(r8a66597->clk)) {
2337                 dev_err(&pdev->dev, "cannot get clock \"%s\"\n", clk_name);
2338                 ret = PTR_ERR(r8a66597->clk);
2339                 goto clean_up2;
2340         }
2341 #endif
2342
2343         spin_lock_init(&r8a66597->lock);
2344         init_timer(&r8a66597->rh_timer);
2345         r8a66597->rh_timer.function = r8a66597_timer;
2346         r8a66597->rh_timer.data = (unsigned long)r8a66597;
2347         r8a66597->reg = (unsigned long)reg;
2348
2349         for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) {
2350                 INIT_LIST_HEAD(&r8a66597->pipe_queue[i]);
2351                 init_timer(&r8a66597->td_timer[i]);
2352                 r8a66597->td_timer[i].function = r8a66597_td_timer;
2353                 r8a66597->td_timer[i].data = (unsigned long)r8a66597;
2354                 setup_timer(&r8a66597->interval_timer[i],
2355                                 r8a66597_interval_timer,
2356                                 (unsigned long)r8a66597);
2357         }
2358         INIT_LIST_HEAD(&r8a66597->child_device);
2359
2360         hcd->rsrc_start = res->start;
2361
2362         /* irq_sense setting on cmdline takes precedence over resource
2363          * settings, so the introduction of irqflags in IRQ resourse
2364          * won't disturb existing setups */
2365         switch (irq_sense) {
2366                 case INTL:
2367                         irq_trigger = IRQF_TRIGGER_LOW;
2368                         break;
2369                 case 0:
2370                         irq_trigger = IRQF_TRIGGER_FALLING;
2371                         break;
2372                 case 0xff:
2373                         if (irq_trigger)
2374                                 irq_sense = (irq_trigger & IRQF_TRIGGER_LOW) ?
2375                                             INTL : 0;
2376                         else {
2377                                 irq_sense = INTL;
2378                                 irq_trigger = IRQF_TRIGGER_LOW;
2379                         }
2380                         break;
2381                 default:
2382                         dev_err(&pdev->dev, "Unknown irq_sense value.\n");
2383         }
2384
2385         ret = usb_add_hcd(hcd, irq, IRQF_DISABLED | irq_trigger);
2386         if (ret != 0) {
2387                 dev_err(&pdev->dev, "Failed to add hcd\n");
2388                 goto clean_up3;
2389         }
2390
2391         return 0;
2392
2393 clean_up3:
2394 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) && defined(CONFIG_HAVE_CLK)
2395         clk_put(r8a66597->clk);
2396 clean_up2:
2397 #endif
2398         usb_put_hcd(hcd);
2399
2400 clean_up:
2401         if (reg)
2402                 iounmap(reg);
2403
2404         return ret;
2405 }
2406
2407 static struct platform_driver r8a66597_driver = {
2408         .probe =        r8a66597_probe,
2409         .remove =       r8a66597_remove,
2410         .suspend =      r8a66597_suspend,
2411         .resume =       r8a66597_resume,
2412         .driver         = {
2413                 .name = (char *) hcd_name,
2414                 .owner  = THIS_MODULE,
2415         },
2416 };
2417
2418 static int __init r8a66597_init(void)
2419 {
2420         if (usb_disabled())
2421                 return -ENODEV;
2422
2423         printk(KERN_INFO KBUILD_MODNAME ": driver %s, %s\n", hcd_name,
2424                DRIVER_VERSION);
2425         return platform_driver_register(&r8a66597_driver);
2426 }
2427 module_init(r8a66597_init);
2428
2429 static void __exit r8a66597_cleanup(void)
2430 {
2431         platform_driver_unregister(&r8a66597_driver);
2432 }
2433 module_exit(r8a66597_cleanup);
2434