linux/drivers/usb/host/r8a66597-hcd.c
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   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 <yoshihiro.shimoda.uh@renesas.com>
  10 *
  11 * This program is free software; you can redistribute it and/or modify
  12 * it under the terms of the GNU General Public License as published by
  13 * the Free Software Foundation; version 2 of the License.
  14 *
  15 * This program is distributed in the hope that it will be useful,
  16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 * GNU General Public License for more details.
  19 *
  20 * You should have received a copy of the GNU General Public License
  21 * along with this program; if not, write to the Free Software
  22 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  23 *
  24 */
  25
  26#include <linux/module.h>
  27#include <linux/kernel.h>
  28#include <linux/sched.h>
  29#include <linux/errno.h>
  30#include <linux/timer.h>
  31#include <linux/delay.h>
  32#include <linux/list.h>
  33#include <linux/interrupt.h>
  34#include <linux/usb.h>
  35#include <linux/usb/hcd.h>
  36#include <linux/platform_device.h>
  37#include <linux/io.h>
  38#include <linux/mm.h>
  39#include <linux/irq.h>
  40#include <linux/slab.h>
  41#include <asm/cacheflush.h>
  42
  43#include "r8a66597.h"
  44
  45MODULE_DESCRIPTION("R8A66597 USB Host Controller Driver");
  46MODULE_LICENSE("GPL");
  47MODULE_AUTHOR("Yoshihiro Shimoda");
  48MODULE_ALIAS("platform:r8a66597_hcd");
  49
  50#define DRIVER_VERSION  "2009-05-26"
  51
  52static const char hcd_name[] = "r8a66597_hcd";
  53
  54static void packet_write(struct r8a66597 *r8a66597, u16 pipenum);
  55static int r8a66597_get_frame(struct usb_hcd *hcd);
  56
  57/* this function must be called with interrupt disabled */
  58static void enable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
  59                            unsigned long reg)
  60{
  61        u16 tmp;
  62
  63        tmp = r8a66597_read(r8a66597, INTENB0);
  64        r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
  65        r8a66597_bset(r8a66597, 1 << pipenum, reg);
  66        r8a66597_write(r8a66597, tmp, INTENB0);
  67}
  68
  69/* this function must be called with interrupt disabled */
  70static void disable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
  71                             unsigned long reg)
  72{
  73        u16 tmp;
  74
  75        tmp = r8a66597_read(r8a66597, INTENB0);
  76        r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
  77        r8a66597_bclr(r8a66597, 1 << pipenum, reg);
  78        r8a66597_write(r8a66597, tmp, INTENB0);
  79}
  80
  81static void set_devadd_reg(struct r8a66597 *r8a66597, u8 r8a66597_address,
  82                           u16 usbspd, u8 upphub, u8 hubport, int port)
  83{
  84        u16 val;
  85        unsigned long devadd_reg = get_devadd_addr(r8a66597_address);
  86
  87        val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001);
  88        r8a66597_write(r8a66597, val, devadd_reg);
  89}
  90
  91static int r8a66597_clock_enable(struct r8a66597 *r8a66597)
  92{
  93        u16 tmp;
  94        int i = 0;
  95
  96        if (r8a66597->pdata->on_chip) {
  97                clk_prepare_enable(r8a66597->clk);
  98                do {
  99                        r8a66597_write(r8a66597, SCKE, SYSCFG0);
 100                        tmp = r8a66597_read(r8a66597, SYSCFG0);
 101                        if (i++ > 1000) {
 102                                printk(KERN_ERR "r8a66597: reg access fail.\n");
 103                                return -ENXIO;
 104                        }
 105                } while ((tmp & SCKE) != SCKE);
 106                r8a66597_write(r8a66597, 0x04, 0x02);
 107        } else {
 108                do {
 109                        r8a66597_write(r8a66597, USBE, SYSCFG0);
 110                        tmp = r8a66597_read(r8a66597, SYSCFG0);
 111                        if (i++ > 1000) {
 112                                printk(KERN_ERR "r8a66597: reg access fail.\n");
 113                                return -ENXIO;
 114                        }
 115                } while ((tmp & USBE) != USBE);
 116                r8a66597_bclr(r8a66597, USBE, SYSCFG0);
 117                r8a66597_mdfy(r8a66597, get_xtal_from_pdata(r8a66597->pdata),
 118                              XTAL, SYSCFG0);
 119
 120                i = 0;
 121                r8a66597_bset(r8a66597, XCKE, SYSCFG0);
 122                do {
 123                        msleep(1);
 124                        tmp = r8a66597_read(r8a66597, SYSCFG0);
 125                        if (i++ > 500) {
 126                                printk(KERN_ERR "r8a66597: reg access fail.\n");
 127                                return -ENXIO;
 128                        }
 129                } while ((tmp & SCKE) != SCKE);
 130        }
 131
 132        return 0;
 133}
 134
 135static void r8a66597_clock_disable(struct r8a66597 *r8a66597)
 136{
 137        r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
 138        udelay(1);
 139
 140        if (r8a66597->pdata->on_chip) {
 141                clk_disable_unprepare(r8a66597->clk);
 142        } else {
 143                r8a66597_bclr(r8a66597, PLLC, SYSCFG0);
 144                r8a66597_bclr(r8a66597, XCKE, SYSCFG0);
 145                r8a66597_bclr(r8a66597, USBE, SYSCFG0);
 146        }
 147}
 148
 149static void r8a66597_enable_port(struct r8a66597 *r8a66597, int port)
 150{
 151        u16 val;
 152
 153        val = port ? DRPD : DCFM | DRPD;
 154        r8a66597_bset(r8a66597, val, get_syscfg_reg(port));
 155        r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port));
 156
 157        r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, get_dmacfg_reg(port));
 158        r8a66597_bclr(r8a66597, DTCHE, get_intenb_reg(port));
 159        r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
 160}
 161
 162static void r8a66597_disable_port(struct r8a66597 *r8a66597, int port)
 163{
 164        u16 val, tmp;
 165
 166        r8a66597_write(r8a66597, 0, get_intenb_reg(port));
 167        r8a66597_write(r8a66597, 0, get_intsts_reg(port));
 168
 169        r8a66597_port_power(r8a66597, port, 0);
 170
 171        do {
 172                tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS;
 173                udelay(640);
 174        } while (tmp == EDGESTS);
 175
 176        val = port ? DRPD : DCFM | DRPD;
 177        r8a66597_bclr(r8a66597, val, get_syscfg_reg(port));
 178        r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port));
 179}
 180
 181static int enable_controller(struct r8a66597 *r8a66597)
 182{
 183        int ret, port;
 184        u16 vif = r8a66597->pdata->vif ? LDRV : 0;
 185        u16 irq_sense = r8a66597->irq_sense_low ? INTL : 0;
 186        u16 endian = r8a66597->pdata->endian ? BIGEND : 0;
 187
 188        ret = r8a66597_clock_enable(r8a66597);
 189        if (ret < 0)
 190                return ret;
 191
 192        r8a66597_bset(r8a66597, vif & LDRV, PINCFG);
 193        r8a66597_bset(r8a66597, USBE, SYSCFG0);
 194
 195        r8a66597_bset(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
 196        r8a66597_bset(r8a66597, irq_sense & INTL, SOFCFG);
 197        r8a66597_bset(r8a66597, BRDY0, BRDYENB);
 198        r8a66597_bset(r8a66597, BEMP0, BEMPENB);
 199
 200        r8a66597_bset(r8a66597, endian & BIGEND, CFIFOSEL);
 201        r8a66597_bset(r8a66597, endian & BIGEND, D0FIFOSEL);
 202        r8a66597_bset(r8a66597, endian & BIGEND, D1FIFOSEL);
 203        r8a66597_bset(r8a66597, TRNENSEL, SOFCFG);
 204
 205        r8a66597_bset(r8a66597, SIGNE | SACKE, INTENB1);
 206
 207        for (port = 0; port < r8a66597->max_root_hub; port++)
 208                r8a66597_enable_port(r8a66597, port);
 209
 210        return 0;
 211}
 212
 213static void disable_controller(struct r8a66597 *r8a66597)
 214{
 215        int port;
 216
 217        /* disable interrupts */
 218        r8a66597_write(r8a66597, 0, INTENB0);
 219        r8a66597_write(r8a66597, 0, INTENB1);
 220        r8a66597_write(r8a66597, 0, BRDYENB);
 221        r8a66597_write(r8a66597, 0, BEMPENB);
 222        r8a66597_write(r8a66597, 0, NRDYENB);
 223
 224        /* clear status */
 225        r8a66597_write(r8a66597, 0, BRDYSTS);
 226        r8a66597_write(r8a66597, 0, NRDYSTS);
 227        r8a66597_write(r8a66597, 0, BEMPSTS);
 228
 229        for (port = 0; port < r8a66597->max_root_hub; port++)
 230                r8a66597_disable_port(r8a66597, port);
 231
 232        r8a66597_clock_disable(r8a66597);
 233}
 234
 235static int get_parent_r8a66597_address(struct r8a66597 *r8a66597,
 236                                       struct usb_device *udev)
 237{
 238        struct r8a66597_device *dev;
 239
 240        if (udev->parent && udev->parent->devnum != 1)
 241                udev = udev->parent;
 242
 243        dev = dev_get_drvdata(&udev->dev);
 244        if (dev)
 245                return dev->address;
 246        else
 247                return 0;
 248}
 249
 250static int is_child_device(char *devpath)
 251{
 252        return (devpath[2] ? 1 : 0);
 253}
 254
 255static int is_hub_limit(char *devpath)
 256{
 257        return ((strlen(devpath) >= 4) ? 1 : 0);
 258}
 259
 260static void get_port_number(struct r8a66597 *r8a66597,
 261                            char *devpath, u16 *root_port, u16 *hub_port)
 262{
 263        if (root_port) {
 264                *root_port = (devpath[0] & 0x0F) - 1;
 265                if (*root_port >= r8a66597->max_root_hub)
 266                        printk(KERN_ERR "r8a66597: Illegal root port number.\n");
 267        }
 268        if (hub_port)
 269                *hub_port = devpath[2] & 0x0F;
 270}
 271
 272static u16 get_r8a66597_usb_speed(enum usb_device_speed speed)
 273{
 274        u16 usbspd = 0;
 275
 276        switch (speed) {
 277        case USB_SPEED_LOW:
 278                usbspd = LSMODE;
 279                break;
 280        case USB_SPEED_FULL:
 281                usbspd = FSMODE;
 282                break;
 283        case USB_SPEED_HIGH:
 284                usbspd = HSMODE;
 285                break;
 286        default:
 287                printk(KERN_ERR "r8a66597: unknown speed\n");
 288                break;
 289        }
 290
 291        return usbspd;
 292}
 293
 294static void set_child_connect_map(struct r8a66597 *r8a66597, int address)
 295{
 296        int idx;
 297
 298        idx = address / 32;
 299        r8a66597->child_connect_map[idx] |= 1 << (address % 32);
 300}
 301
 302static void put_child_connect_map(struct r8a66597 *r8a66597, int address)
 303{
 304        int idx;
 305
 306        idx = address / 32;
 307        r8a66597->child_connect_map[idx] &= ~(1 << (address % 32));
 308}
 309
 310static void set_pipe_reg_addr(struct r8a66597_pipe *pipe, u8 dma_ch)
 311{
 312        u16 pipenum = pipe->info.pipenum;
 313        const unsigned long fifoaddr[] = {D0FIFO, D1FIFO, CFIFO};
 314        const unsigned long fifosel[] = {D0FIFOSEL, D1FIFOSEL, CFIFOSEL};
 315        const unsigned long fifoctr[] = {D0FIFOCTR, D1FIFOCTR, CFIFOCTR};
 316
 317        if (dma_ch > R8A66597_PIPE_NO_DMA)      /* dma fifo not use? */
 318                dma_ch = R8A66597_PIPE_NO_DMA;
 319
 320        pipe->fifoaddr = fifoaddr[dma_ch];
 321        pipe->fifosel = fifosel[dma_ch];
 322        pipe->fifoctr = fifoctr[dma_ch];
 323
 324        if (pipenum == 0)
 325                pipe->pipectr = DCPCTR;
 326        else
 327                pipe->pipectr = get_pipectr_addr(pipenum);
 328
 329        if (check_bulk_or_isoc(pipenum)) {
 330                pipe->pipetre = get_pipetre_addr(pipenum);
 331                pipe->pipetrn = get_pipetrn_addr(pipenum);
 332        } else {
 333                pipe->pipetre = 0;
 334                pipe->pipetrn = 0;
 335        }
 336}
 337
 338static struct r8a66597_device *
 339get_urb_to_r8a66597_dev(struct r8a66597 *r8a66597, struct urb *urb)
 340{
 341        if (usb_pipedevice(urb->pipe) == 0)
 342                return &r8a66597->device0;
 343
 344        return dev_get_drvdata(&urb->dev->dev);
 345}
 346
 347static int make_r8a66597_device(struct r8a66597 *r8a66597,
 348                                struct urb *urb, u8 addr)
 349{
 350        struct r8a66597_device *dev;
 351        int usb_address = urb->setup_packet[2]; /* urb->pipe is address 0 */
 352
 353        dev = kzalloc(sizeof(struct r8a66597_device), GFP_ATOMIC);
 354        if (dev == NULL)
 355                return -ENOMEM;
 356
 357        dev_set_drvdata(&urb->dev->dev, dev);
 358        dev->udev = urb->dev;
 359        dev->address = addr;
 360        dev->usb_address = usb_address;
 361        dev->state = USB_STATE_ADDRESS;
 362        dev->ep_in_toggle = 0;
 363        dev->ep_out_toggle = 0;
 364        INIT_LIST_HEAD(&dev->device_list);
 365        list_add_tail(&dev->device_list, &r8a66597->child_device);
 366
 367        get_port_number(r8a66597, urb->dev->devpath,
 368                        &dev->root_port, &dev->hub_port);
 369        if (!is_child_device(urb->dev->devpath))
 370                r8a66597->root_hub[dev->root_port].dev = dev;
 371
 372        set_devadd_reg(r8a66597, dev->address,
 373                       get_r8a66597_usb_speed(urb->dev->speed),
 374                       get_parent_r8a66597_address(r8a66597, urb->dev),
 375                       dev->hub_port, dev->root_port);
 376
 377        return 0;
 378}
 379
 380/* this function must be called with interrupt disabled */
 381static u8 alloc_usb_address(struct r8a66597 *r8a66597, struct urb *urb)
 382{
 383        u8 addr;        /* R8A66597's address */
 384        struct r8a66597_device *dev;
 385
 386        if (is_hub_limit(urb->dev->devpath)) {
 387                dev_err(&urb->dev->dev, "External hub limit reached.\n");
 388                return 0;
 389        }
 390
 391        dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 392        if (dev && dev->state >= USB_STATE_ADDRESS)
 393                return dev->address;
 394
 395        for (addr = 1; addr <= R8A66597_MAX_DEVICE; addr++) {
 396                if (r8a66597->address_map & (1 << addr))
 397                        continue;
 398
 399                dev_dbg(&urb->dev->dev, "alloc_address: r8a66597_addr=%d\n", addr);
 400                r8a66597->address_map |= 1 << addr;
 401
 402                if (make_r8a66597_device(r8a66597, urb, addr) < 0)
 403                        return 0;
 404
 405                return addr;
 406        }
 407
 408        dev_err(&urb->dev->dev,
 409                "cannot communicate with a USB device more than 10.(%x)\n",
 410                r8a66597->address_map);
 411
 412        return 0;
 413}
 414
 415/* this function must be called with interrupt disabled */
 416static void free_usb_address(struct r8a66597 *r8a66597,
 417                             struct r8a66597_device *dev, int reset)
 418{
 419        int port;
 420
 421        if (!dev)
 422                return;
 423
 424        dev_dbg(&dev->udev->dev, "free_addr: addr=%d\n", dev->address);
 425
 426        dev->state = USB_STATE_DEFAULT;
 427        r8a66597->address_map &= ~(1 << dev->address);
 428        dev->address = 0;
 429        /*
 430         * Only when resetting USB, it is necessary to erase drvdata. When
 431         * a usb device with usb hub is disconnect, "dev->udev" is already
 432         * freed on usb_desconnect(). So we cannot access the data.
 433         */
 434        if (reset)
 435                dev_set_drvdata(&dev->udev->dev, NULL);
 436        list_del(&dev->device_list);
 437        kfree(dev);
 438
 439        for (port = 0; port < r8a66597->max_root_hub; port++) {
 440                if (r8a66597->root_hub[port].dev == dev) {
 441                        r8a66597->root_hub[port].dev = NULL;
 442                        break;
 443                }
 444        }
 445}
 446
 447static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg,
 448                              u16 mask, u16 loop)
 449{
 450        u16 tmp;
 451        int i = 0;
 452
 453        do {
 454                tmp = r8a66597_read(r8a66597, reg);
 455                if (i++ > 1000000) {
 456                        printk(KERN_ERR "r8a66597: register%lx, loop %x "
 457                               "is timeout\n", reg, loop);
 458                        break;
 459                }
 460                ndelay(1);
 461        } while ((tmp & mask) != loop);
 462}
 463
 464/* this function must be called with interrupt disabled */
 465static void pipe_start(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
 466{
 467        u16 tmp;
 468
 469        tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
 470        if ((pipe->info.pipenum != 0) & ((tmp & PID_STALL) != 0)) /* stall? */
 471                r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
 472        r8a66597_mdfy(r8a66597, PID_BUF, PID, pipe->pipectr);
 473}
 474
 475/* this function must be called with interrupt disabled */
 476static void pipe_stop(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
 477{
 478        u16 tmp;
 479
 480        tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
 481        if ((tmp & PID_STALL11) != PID_STALL11) /* force stall? */
 482                r8a66597_mdfy(r8a66597, PID_STALL, PID, pipe->pipectr);
 483        r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
 484        r8a66597_reg_wait(r8a66597, pipe->pipectr, PBUSY, 0);
 485}
 486
 487/* this function must be called with interrupt disabled */
 488static void clear_all_buffer(struct r8a66597 *r8a66597,
 489                             struct r8a66597_pipe *pipe)
 490{
 491        u16 tmp;
 492
 493        if (!pipe || pipe->info.pipenum == 0)
 494                return;
 495
 496        pipe_stop(r8a66597, pipe);
 497        r8a66597_bset(r8a66597, ACLRM, pipe->pipectr);
 498        tmp = r8a66597_read(r8a66597, pipe->pipectr);
 499        tmp = r8a66597_read(r8a66597, pipe->pipectr);
 500        tmp = r8a66597_read(r8a66597, pipe->pipectr);
 501        r8a66597_bclr(r8a66597, ACLRM, pipe->pipectr);
 502}
 503
 504/* this function must be called with interrupt disabled */
 505static void r8a66597_pipe_toggle(struct r8a66597 *r8a66597,
 506                                 struct r8a66597_pipe *pipe, int toggle)
 507{
 508        if (toggle)
 509                r8a66597_bset(r8a66597, SQSET, pipe->pipectr);
 510        else
 511                r8a66597_bset(r8a66597, SQCLR, pipe->pipectr);
 512}
 513
 514static inline unsigned short mbw_value(struct r8a66597 *r8a66597)
 515{
 516        if (r8a66597->pdata->on_chip)
 517                return MBW_32;
 518        else
 519                return MBW_16;
 520}
 521
 522/* this function must be called with interrupt disabled */
 523static inline void cfifo_change(struct r8a66597 *r8a66597, u16 pipenum)
 524{
 525        unsigned short mbw = mbw_value(r8a66597);
 526
 527        r8a66597_mdfy(r8a66597, mbw | pipenum, mbw | CURPIPE, CFIFOSEL);
 528        r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, pipenum);
 529}
 530
 531/* this function must be called with interrupt disabled */
 532static inline void fifo_change_from_pipe(struct r8a66597 *r8a66597,
 533                                         struct r8a66597_pipe *pipe)
 534{
 535        unsigned short mbw = mbw_value(r8a66597);
 536
 537        cfifo_change(r8a66597, 0);
 538        r8a66597_mdfy(r8a66597, mbw | 0, mbw | CURPIPE, D0FIFOSEL);
 539        r8a66597_mdfy(r8a66597, mbw | 0, mbw | CURPIPE, D1FIFOSEL);
 540
 541        r8a66597_mdfy(r8a66597, mbw | pipe->info.pipenum, mbw | CURPIPE,
 542                      pipe->fifosel);
 543        r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, pipe->info.pipenum);
 544}
 545
 546static u16 r8a66597_get_pipenum(struct urb *urb, struct usb_host_endpoint *hep)
 547{
 548        struct r8a66597_pipe *pipe = hep->hcpriv;
 549
 550        if (usb_pipeendpoint(urb->pipe) == 0)
 551                return 0;
 552        else
 553                return pipe->info.pipenum;
 554}
 555
 556static u16 get_urb_to_r8a66597_addr(struct r8a66597 *r8a66597, struct urb *urb)
 557{
 558        struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 559
 560        return (usb_pipedevice(urb->pipe) == 0) ? 0 : dev->address;
 561}
 562
 563static unsigned short *get_toggle_pointer(struct r8a66597_device *dev,
 564                                          int urb_pipe)
 565{
 566        if (!dev)
 567                return NULL;
 568
 569        return usb_pipein(urb_pipe) ? &dev->ep_in_toggle : &dev->ep_out_toggle;
 570}
 571
 572/* this function must be called with interrupt disabled */
 573static void pipe_toggle_set(struct r8a66597 *r8a66597,
 574                            struct r8a66597_pipe *pipe,
 575                            struct urb *urb, int set)
 576{
 577        struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 578        unsigned char endpoint = usb_pipeendpoint(urb->pipe);
 579        unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
 580
 581        if (!toggle)
 582                return;
 583
 584        if (set)
 585                *toggle |= 1 << endpoint;
 586        else
 587                *toggle &= ~(1 << endpoint);
 588}
 589
 590/* this function must be called with interrupt disabled */
 591static void pipe_toggle_save(struct r8a66597 *r8a66597,
 592                             struct r8a66597_pipe *pipe,
 593                             struct urb *urb)
 594{
 595        if (r8a66597_read(r8a66597, pipe->pipectr) & SQMON)
 596                pipe_toggle_set(r8a66597, pipe, urb, 1);
 597        else
 598                pipe_toggle_set(r8a66597, pipe, urb, 0);
 599}
 600
 601/* this function must be called with interrupt disabled */
 602static void pipe_toggle_restore(struct r8a66597 *r8a66597,
 603                                struct r8a66597_pipe *pipe,
 604                                struct urb *urb)
 605{
 606        struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 607        unsigned char endpoint = usb_pipeendpoint(urb->pipe);
 608        unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
 609
 610        if (!toggle)
 611                return;
 612
 613        r8a66597_pipe_toggle(r8a66597, pipe, *toggle & (1 << endpoint));
 614}
 615
 616/* this function must be called with interrupt disabled */
 617static void pipe_buffer_setting(struct r8a66597 *r8a66597,
 618                                struct r8a66597_pipe_info *info)
 619{
 620        u16 val = 0;
 621
 622        if (info->pipenum == 0)
 623                return;
 624
 625        r8a66597_bset(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
 626        r8a66597_bclr(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
 627        r8a66597_write(r8a66597, info->pipenum, PIPESEL);
 628        if (!info->dir_in)
 629                val |= R8A66597_DIR;
 630        if (info->type == R8A66597_BULK && info->dir_in)
 631                val |= R8A66597_DBLB | R8A66597_SHTNAK;
 632        val |= info->type | info->epnum;
 633        r8a66597_write(r8a66597, val, PIPECFG);
 634
 635        r8a66597_write(r8a66597, (info->buf_bsize << 10) | (info->bufnum),
 636                       PIPEBUF);
 637        r8a66597_write(r8a66597, make_devsel(info->address) | info->maxpacket,
 638                       PIPEMAXP);
 639        r8a66597_write(r8a66597, info->interval, PIPEPERI);
 640}
 641
 642/* this function must be called with interrupt disabled */
 643static void pipe_setting(struct r8a66597 *r8a66597, struct r8a66597_td *td)
 644{
 645        struct r8a66597_pipe_info *info;
 646        struct urb *urb = td->urb;
 647
 648        if (td->pipenum > 0) {
 649                info = &td->pipe->info;
 650                cfifo_change(r8a66597, 0);
 651                pipe_buffer_setting(r8a66597, info);
 652
 653                if (!usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe),
 654                                   usb_pipeout(urb->pipe)) &&
 655                    !usb_pipecontrol(urb->pipe)) {
 656                        r8a66597_pipe_toggle(r8a66597, td->pipe, 0);
 657                        pipe_toggle_set(r8a66597, td->pipe, urb, 0);
 658                        clear_all_buffer(r8a66597, td->pipe);
 659                        usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
 660                                      usb_pipeout(urb->pipe), 1);
 661                }
 662                pipe_toggle_restore(r8a66597, td->pipe, urb);
 663        }
 664}
 665
 666/* this function must be called with interrupt disabled */
 667static u16 get_empty_pipenum(struct r8a66597 *r8a66597,
 668                             struct usb_endpoint_descriptor *ep)
 669{
 670        u16 array[R8A66597_MAX_NUM_PIPE], i = 0, min;
 671
 672        memset(array, 0, sizeof(array));
 673        switch (usb_endpoint_type(ep)) {
 674        case USB_ENDPOINT_XFER_BULK:
 675                if (usb_endpoint_dir_in(ep))
 676                        array[i++] = 4;
 677                else {
 678                        array[i++] = 3;
 679                        array[i++] = 5;
 680                }
 681                break;
 682        case USB_ENDPOINT_XFER_INT:
 683                if (usb_endpoint_dir_in(ep)) {
 684                        array[i++] = 6;
 685                        array[i++] = 7;
 686                        array[i++] = 8;
 687                } else
 688                        array[i++] = 9;
 689                break;
 690        case USB_ENDPOINT_XFER_ISOC:
 691                if (usb_endpoint_dir_in(ep))
 692                        array[i++] = 2;
 693                else
 694                        array[i++] = 1;
 695                break;
 696        default:
 697                printk(KERN_ERR "r8a66597: Illegal type\n");
 698                return 0;
 699        }
 700
 701        i = 1;
 702        min = array[0];
 703        while (array[i] != 0) {
 704                if (r8a66597->pipe_cnt[min] > r8a66597->pipe_cnt[array[i]])
 705                        min = array[i];
 706                i++;
 707        }
 708
 709        return min;
 710}
 711
 712static u16 get_r8a66597_type(__u8 type)
 713{
 714        u16 r8a66597_type;
 715
 716        switch (type) {
 717        case USB_ENDPOINT_XFER_BULK:
 718                r8a66597_type = R8A66597_BULK;
 719                break;
 720        case USB_ENDPOINT_XFER_INT:
 721                r8a66597_type = R8A66597_INT;
 722                break;
 723        case USB_ENDPOINT_XFER_ISOC:
 724                r8a66597_type = R8A66597_ISO;
 725                break;
 726        default:
 727                printk(KERN_ERR "r8a66597: Illegal type\n");
 728                r8a66597_type = 0x0000;
 729                break;
 730        }
 731
 732        return r8a66597_type;
 733}
 734
 735static u16 get_bufnum(u16 pipenum)
 736{
 737        u16 bufnum = 0;
 738
 739        if (pipenum == 0)
 740                bufnum = 0;
 741        else if (check_bulk_or_isoc(pipenum))
 742                bufnum = 8 + (pipenum - 1) * R8A66597_BUF_BSIZE*2;
 743        else if (check_interrupt(pipenum))
 744                bufnum = 4 + (pipenum - 6);
 745        else
 746                printk(KERN_ERR "r8a66597: Illegal pipenum (%d)\n", pipenum);
 747
 748        return bufnum;
 749}
 750
 751static u16 get_buf_bsize(u16 pipenum)
 752{
 753        u16 buf_bsize = 0;
 754
 755        if (pipenum == 0)
 756                buf_bsize = 3;
 757        else if (check_bulk_or_isoc(pipenum))
 758                buf_bsize = R8A66597_BUF_BSIZE - 1;
 759        else if (check_interrupt(pipenum))
 760                buf_bsize = 0;
 761        else
 762                printk(KERN_ERR "r8a66597: Illegal pipenum (%d)\n", pipenum);
 763
 764        return buf_bsize;
 765}
 766
 767/* this function must be called with interrupt disabled */
 768static void enable_r8a66597_pipe_dma(struct r8a66597 *r8a66597,
 769                                     struct r8a66597_device *dev,
 770                                     struct r8a66597_pipe *pipe,
 771                                     struct urb *urb)
 772{
 773        int i;
 774        struct r8a66597_pipe_info *info = &pipe->info;
 775        unsigned short mbw = mbw_value(r8a66597);
 776
 777        /* pipe dma is only for external controlles */
 778        if (r8a66597->pdata->on_chip)
 779                return;
 780
 781        if ((pipe->info.pipenum != 0) && (info->type != R8A66597_INT)) {
 782                for (i = 0; i < R8A66597_MAX_DMA_CHANNEL; i++) {
 783                        if ((r8a66597->dma_map & (1 << i)) != 0)
 784                                continue;
 785
 786                        dev_info(&dev->udev->dev,
 787                                 "address %d, EndpointAddress 0x%02x use "
 788                                 "DMA FIFO\n", usb_pipedevice(urb->pipe),
 789                                 info->dir_in ?
 790                                        USB_ENDPOINT_DIR_MASK + info->epnum
 791                                        : info->epnum);
 792
 793                        r8a66597->dma_map |= 1 << i;
 794                        dev->dma_map |= 1 << i;
 795                        set_pipe_reg_addr(pipe, i);
 796
 797                        cfifo_change(r8a66597, 0);
 798                        r8a66597_mdfy(r8a66597, mbw | pipe->info.pipenum,
 799                                      mbw | CURPIPE, pipe->fifosel);
 800
 801                        r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE,
 802                                          pipe->info.pipenum);
 803                        r8a66597_bset(r8a66597, BCLR, pipe->fifoctr);
 804                        break;
 805                }
 806        }
 807}
 808
 809/* this function must be called with interrupt disabled */
 810static void enable_r8a66597_pipe(struct r8a66597 *r8a66597, struct urb *urb,
 811                                 struct usb_host_endpoint *hep,
 812                                 struct r8a66597_pipe_info *info)
 813{
 814        struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 815        struct r8a66597_pipe *pipe = hep->hcpriv;
 816
 817        dev_dbg(&dev->udev->dev, "enable_pipe:\n");
 818
 819        pipe->info = *info;
 820        set_pipe_reg_addr(pipe, R8A66597_PIPE_NO_DMA);
 821        r8a66597->pipe_cnt[pipe->info.pipenum]++;
 822        dev->pipe_cnt[pipe->info.pipenum]++;
 823
 824        enable_r8a66597_pipe_dma(r8a66597, dev, pipe, urb);
 825}
 826
 827static void r8a66597_urb_done(struct r8a66597 *r8a66597, struct urb *urb,
 828                              int status)
 829__releases(r8a66597->lock)
 830__acquires(r8a66597->lock)
 831{
 832        if (usb_pipein(urb->pipe) && usb_pipetype(urb->pipe) != PIPE_CONTROL) {
 833                void *ptr;
 834
 835                for (ptr = urb->transfer_buffer;
 836                     ptr < urb->transfer_buffer + urb->transfer_buffer_length;
 837                     ptr += PAGE_SIZE)
 838                        flush_dcache_page(virt_to_page(ptr));
 839        }
 840
 841        usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb);
 842        spin_unlock(&r8a66597->lock);
 843        usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb, status);
 844        spin_lock(&r8a66597->lock);
 845}
 846
 847/* this function must be called with interrupt disabled */
 848static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address)
 849{
 850        struct r8a66597_td *td, *next;
 851        struct urb *urb;
 852        struct list_head *list = &r8a66597->pipe_queue[pipenum];
 853
 854        if (list_empty(list))
 855                return;
 856
 857        list_for_each_entry_safe(td, next, list, queue) {
 858                if (td->address != address)
 859                        continue;
 860
 861                urb = td->urb;
 862                list_del(&td->queue);
 863                kfree(td);
 864
 865                if (urb)
 866                        r8a66597_urb_done(r8a66597, urb, -ENODEV);
 867
 868                break;
 869        }
 870}
 871
 872/* this function must be called with interrupt disabled */
 873static void disable_r8a66597_pipe_all(struct r8a66597 *r8a66597,
 874                                      struct r8a66597_device *dev)
 875{
 876        int check_ep0 = 0;
 877        u16 pipenum;
 878
 879        if (!dev)
 880                return;
 881
 882        for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
 883                if (!dev->pipe_cnt[pipenum])
 884                        continue;
 885
 886                if (!check_ep0) {
 887                        check_ep0 = 1;
 888                        force_dequeue(r8a66597, 0, dev->address);
 889                }
 890
 891                r8a66597->pipe_cnt[pipenum] -= dev->pipe_cnt[pipenum];
 892                dev->pipe_cnt[pipenum] = 0;
 893                force_dequeue(r8a66597, pipenum, dev->address);
 894        }
 895
 896        dev_dbg(&dev->udev->dev, "disable_pipe\n");
 897
 898        r8a66597->dma_map &= ~(dev->dma_map);
 899        dev->dma_map = 0;
 900}
 901
 902static u16 get_interval(struct urb *urb, __u8 interval)
 903{
 904        u16 time = 1;
 905        int i;
 906
 907        if (urb->dev->speed == USB_SPEED_HIGH) {
 908                if (interval > IITV)
 909                        time = IITV;
 910                else
 911                        time = interval ? interval - 1 : 0;
 912        } else {
 913                if (interval > 128) {
 914                        time = IITV;
 915                } else {
 916                        /* calculate the nearest value for PIPEPERI */
 917                        for (i = 0; i < 7; i++) {
 918                                if ((1 << i) < interval &&
 919                                    (1 << (i + 1) > interval))
 920                                        time = 1 << i;
 921                        }
 922                }
 923        }
 924
 925        return time;
 926}
 927
 928static unsigned long get_timer_interval(struct urb *urb, __u8 interval)
 929{
 930        __u8 i;
 931        unsigned long time = 1;
 932
 933        if (usb_pipeisoc(urb->pipe))
 934                return 0;
 935
 936        if (get_r8a66597_usb_speed(urb->dev->speed) == HSMODE) {
 937                for (i = 0; i < (interval - 1); i++)
 938                        time *= 2;
 939                time = time * 125 / 1000;       /* uSOF -> msec */
 940        } else {
 941                time = interval;
 942        }
 943
 944        return time;
 945}
 946
 947/* this function must be called with interrupt disabled */
 948static void init_pipe_info(struct r8a66597 *r8a66597, struct urb *urb,
 949                           struct usb_host_endpoint *hep,
 950                           struct usb_endpoint_descriptor *ep)
 951{
 952        struct r8a66597_pipe_info info;
 953
 954        info.pipenum = get_empty_pipenum(r8a66597, ep);
 955        info.address = get_urb_to_r8a66597_addr(r8a66597, urb);
 956        info.epnum = usb_endpoint_num(ep);
 957        info.maxpacket = usb_endpoint_maxp(ep);
 958        info.type = get_r8a66597_type(usb_endpoint_type(ep));
 959        info.bufnum = get_bufnum(info.pipenum);
 960        info.buf_bsize = get_buf_bsize(info.pipenum);
 961        if (info.type == R8A66597_BULK) {
 962                info.interval = 0;
 963                info.timer_interval = 0;
 964        } else {
 965                info.interval = get_interval(urb, ep->bInterval);
 966                info.timer_interval = get_timer_interval(urb, ep->bInterval);
 967        }
 968        if (usb_endpoint_dir_in(ep))
 969                info.dir_in = 1;
 970        else
 971                info.dir_in = 0;
 972
 973        enable_r8a66597_pipe(r8a66597, urb, hep, &info);
 974}
 975
 976static void init_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
 977{
 978        struct r8a66597_device *dev;
 979
 980        dev = get_urb_to_r8a66597_dev(r8a66597, urb);
 981        dev->state = USB_STATE_CONFIGURED;
 982}
 983
 984static void pipe_irq_enable(struct r8a66597 *r8a66597, struct urb *urb,
 985                            u16 pipenum)
 986{
 987        if (pipenum == 0 && usb_pipeout(urb->pipe))
 988                enable_irq_empty(r8a66597, pipenum);
 989        else
 990                enable_irq_ready(r8a66597, pipenum);
 991
 992        if (!usb_pipeisoc(urb->pipe))
 993                enable_irq_nrdy(r8a66597, pipenum);
 994}
 995
 996static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum)
 997{
 998        disable_irq_ready(r8a66597, pipenum);
 999        disable_irq_nrdy(r8a66597, pipenum);
1000}
1001
1002static void r8a66597_root_hub_start_polling(struct r8a66597 *r8a66597)
1003{
1004        mod_timer(&r8a66597->rh_timer,
1005                        jiffies + msecs_to_jiffies(R8A66597_RH_POLL_TIME));
1006}
1007
1008static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port,
1009                                        int connect)
1010{
1011        struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1012
1013        rh->old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
1014        rh->scount = R8A66597_MAX_SAMPLING;
1015        if (connect)
1016                rh->port |= USB_PORT_STAT_CONNECTION;
1017        else
1018                rh->port &= ~USB_PORT_STAT_CONNECTION;
1019        rh->port |= USB_PORT_STAT_C_CONNECTION << 16;
1020
1021        r8a66597_root_hub_start_polling(r8a66597);
1022}
1023
1024/* this function must be called with interrupt disabled */
1025static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port,
1026                                        u16 syssts)
1027__releases(r8a66597->lock)
1028__acquires(r8a66597->lock)
1029{
1030        if (syssts == SE0) {
1031                r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port));
1032                r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
1033        } else {
1034                if (syssts == FS_JSTS)
1035                        r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port));
1036                else if (syssts == LS_JSTS)
1037                        r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port));
1038
1039                r8a66597_write(r8a66597, ~DTCH, get_intsts_reg(port));
1040                r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port));
1041
1042                if (r8a66597->bus_suspended)
1043                        usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597));
1044        }
1045
1046        spin_unlock(&r8a66597->lock);
1047        usb_hcd_poll_rh_status(r8a66597_to_hcd(r8a66597));
1048        spin_lock(&r8a66597->lock);
1049}
1050
1051/* this function must be called with interrupt disabled */
1052static void r8a66597_usb_connect(struct r8a66597 *r8a66597, int port)
1053{
1054        u16 speed = get_rh_usb_speed(r8a66597, port);
1055        struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1056
1057        rh->port &= ~(USB_PORT_STAT_HIGH_SPEED | USB_PORT_STAT_LOW_SPEED);
1058        if (speed == HSMODE)
1059                rh->port |= USB_PORT_STAT_HIGH_SPEED;
1060        else if (speed == LSMODE)
1061                rh->port |= USB_PORT_STAT_LOW_SPEED;
1062
1063        rh->port &= ~USB_PORT_STAT_RESET;
1064        rh->port |= USB_PORT_STAT_ENABLE;
1065}
1066
1067/* this function must be called with interrupt disabled */
1068static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597, int port)
1069{
1070        struct r8a66597_device *dev = r8a66597->root_hub[port].dev;
1071
1072        disable_r8a66597_pipe_all(r8a66597, dev);
1073        free_usb_address(r8a66597, dev, 0);
1074
1075        start_root_hub_sampling(r8a66597, port, 0);
1076}
1077
1078/* this function must be called with interrupt disabled */
1079static void prepare_setup_packet(struct r8a66597 *r8a66597,
1080                                 struct r8a66597_td *td)
1081{
1082        int i;
1083        __le16 *p = (__le16 *)td->urb->setup_packet;
1084        unsigned long setup_addr = USBREQ;
1085
1086        r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket,
1087                       DCPMAXP);
1088        r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1);
1089
1090        for (i = 0; i < 4; i++) {
1091                r8a66597_write(r8a66597, le16_to_cpu(p[i]), setup_addr);
1092                setup_addr += 2;
1093        }
1094        r8a66597_write(r8a66597, SUREQ, DCPCTR);
1095}
1096
1097/* this function must be called with interrupt disabled */
1098static void prepare_packet_read(struct r8a66597 *r8a66597,
1099                                struct r8a66597_td *td)
1100{
1101        struct urb *urb = td->urb;
1102
1103        if (usb_pipecontrol(urb->pipe)) {
1104                r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
1105                r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
1106                r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1107                if (urb->actual_length == 0) {
1108                        r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1109                        r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1110                }
1111                pipe_irq_disable(r8a66597, td->pipenum);
1112                pipe_start(r8a66597, td->pipe);
1113                pipe_irq_enable(r8a66597, urb, td->pipenum);
1114        } else {
1115                if (urb->actual_length == 0) {
1116                        pipe_irq_disable(r8a66597, td->pipenum);
1117                        pipe_setting(r8a66597, td);
1118                        pipe_stop(r8a66597, td->pipe);
1119                        r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
1120
1121                        if (td->pipe->pipetre) {
1122                                r8a66597_write(r8a66597, TRCLR,
1123                                                td->pipe->pipetre);
1124                                r8a66597_write(r8a66597,
1125                                                DIV_ROUND_UP
1126                                                  (urb->transfer_buffer_length,
1127                                                   td->maxpacket),
1128                                                td->pipe->pipetrn);
1129                                r8a66597_bset(r8a66597, TRENB,
1130                                                td->pipe->pipetre);
1131                        }
1132
1133                        pipe_start(r8a66597, td->pipe);
1134                        pipe_irq_enable(r8a66597, urb, td->pipenum);
1135                }
1136        }
1137}
1138
1139/* this function must be called with interrupt disabled */
1140static void prepare_packet_write(struct r8a66597 *r8a66597,
1141                                 struct r8a66597_td *td)
1142{
1143        u16 tmp;
1144        struct urb *urb = td->urb;
1145
1146        if (usb_pipecontrol(urb->pipe)) {
1147                pipe_stop(r8a66597, td->pipe);
1148                r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
1149                r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
1150                r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1151                if (urb->actual_length == 0) {
1152                        r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1153                        r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1154                }
1155        } else {
1156                if (urb->actual_length == 0)
1157                        pipe_setting(r8a66597, td);
1158                if (td->pipe->pipetre)
1159                        r8a66597_bclr(r8a66597, TRENB, td->pipe->pipetre);
1160        }
1161        r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
1162
1163        fifo_change_from_pipe(r8a66597, td->pipe);
1164        tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1165        if (unlikely((tmp & FRDY) == 0))
1166                pipe_irq_enable(r8a66597, urb, td->pipenum);
1167        else
1168                packet_write(r8a66597, td->pipenum);
1169        pipe_start(r8a66597, td->pipe);
1170}
1171
1172/* this function must be called with interrupt disabled */
1173static void prepare_status_packet(struct r8a66597 *r8a66597,
1174                                  struct r8a66597_td *td)
1175{
1176        struct urb *urb = td->urb;
1177
1178        r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1179        pipe_stop(r8a66597, td->pipe);
1180
1181        if (urb->setup_packet[0] & USB_ENDPOINT_DIR_MASK) {
1182                r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
1183                r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
1184                r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1185                r8a66597_write(r8a66597, ~BEMP0, BEMPSTS);
1186                r8a66597_write(r8a66597, BCLR | BVAL, CFIFOCTR);
1187                enable_irq_empty(r8a66597, 0);
1188        } else {
1189                r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
1190                r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
1191                r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1192                r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1193                enable_irq_ready(r8a66597, 0);
1194        }
1195        enable_irq_nrdy(r8a66597, 0);
1196        pipe_start(r8a66597, td->pipe);
1197}
1198
1199static int is_set_address(unsigned char *setup_packet)
1200{
1201        if (((setup_packet[0] & USB_TYPE_MASK) == USB_TYPE_STANDARD) &&
1202                        setup_packet[1] == USB_REQ_SET_ADDRESS)
1203                return 1;
1204        else
1205                return 0;
1206}
1207
1208/* this function must be called with interrupt disabled */
1209static int start_transfer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1210{
1211        BUG_ON(!td);
1212
1213        switch (td->type) {
1214        case USB_PID_SETUP:
1215                if (is_set_address(td->urb->setup_packet)) {
1216                        td->set_address = 1;
1217                        td->urb->setup_packet[2] = alloc_usb_address(r8a66597,
1218                                                                     td->urb);
1219                        if (td->urb->setup_packet[2] == 0)
1220                                return -EPIPE;
1221                }
1222                prepare_setup_packet(r8a66597, td);
1223                break;
1224        case USB_PID_IN:
1225                prepare_packet_read(r8a66597, td);
1226                break;
1227        case USB_PID_OUT:
1228                prepare_packet_write(r8a66597, td);
1229                break;
1230        case USB_PID_ACK:
1231                prepare_status_packet(r8a66597, td);
1232                break;
1233        default:
1234                printk(KERN_ERR "r8a66597: invalid type.\n");
1235                break;
1236        }
1237
1238        return 0;
1239}
1240
1241static int check_transfer_finish(struct r8a66597_td *td, struct urb *urb)
1242{
1243        if (usb_pipeisoc(urb->pipe)) {
1244                if (urb->number_of_packets == td->iso_cnt)
1245                        return 1;
1246        }
1247
1248        /* control or bulk or interrupt */
1249        if ((urb->transfer_buffer_length <= urb->actual_length) ||
1250            (td->short_packet) || (td->zero_packet))
1251                return 1;
1252
1253        return 0;
1254}
1255
1256/* this function must be called with interrupt disabled */
1257static void set_td_timer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1258{
1259        unsigned long time;
1260
1261        BUG_ON(!td);
1262
1263        if (!list_empty(&r8a66597->pipe_queue[td->pipenum]) &&
1264            !usb_pipecontrol(td->urb->pipe) && usb_pipein(td->urb->pipe)) {
1265                r8a66597->timeout_map |= 1 << td->pipenum;
1266                switch (usb_pipetype(td->urb->pipe)) {
1267                case PIPE_INTERRUPT:
1268                case PIPE_ISOCHRONOUS:
1269                        time = 30;
1270                        break;
1271                default:
1272                        time = 300;
1273                        break;
1274                }
1275
1276                mod_timer(&r8a66597->td_timer[td->pipenum],
1277                          jiffies + msecs_to_jiffies(time));
1278        }
1279}
1280
1281/* this function must be called with interrupt disabled */
1282static void finish_request(struct r8a66597 *r8a66597, struct r8a66597_td *td,
1283                u16 pipenum, struct urb *urb, int status)
1284__releases(r8a66597->lock) __acquires(r8a66597->lock)
1285{
1286        int restart = 0;
1287        struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
1288
1289        r8a66597->timeout_map &= ~(1 << pipenum);
1290
1291        if (likely(td)) {
1292                if (td->set_address && (status != 0 || urb->unlinked))
1293                        r8a66597->address_map &= ~(1 << urb->setup_packet[2]);
1294
1295                pipe_toggle_save(r8a66597, td->pipe, urb);
1296                list_del(&td->queue);
1297                kfree(td);
1298        }
1299
1300        if (!list_empty(&r8a66597->pipe_queue[pipenum]))
1301                restart = 1;
1302
1303        if (likely(urb)) {
1304                if (usb_pipeisoc(urb->pipe))
1305                        urb->start_frame = r8a66597_get_frame(hcd);
1306
1307                r8a66597_urb_done(r8a66597, urb, status);
1308        }
1309
1310        if (restart) {
1311                td = r8a66597_get_td(r8a66597, pipenum);
1312                if (unlikely(!td))
1313                        return;
1314
1315                start_transfer(r8a66597, td);
1316                set_td_timer(r8a66597, td);
1317        }
1318}
1319
1320static void packet_read(struct r8a66597 *r8a66597, u16 pipenum)
1321{
1322        u16 tmp;
1323        int rcv_len, bufsize, urb_len, size;
1324        u16 *buf;
1325        struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1326        struct urb *urb;
1327        int finish = 0;
1328        int status = 0;
1329
1330        if (unlikely(!td))
1331                return;
1332        urb = td->urb;
1333
1334        fifo_change_from_pipe(r8a66597, td->pipe);
1335        tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1336        if (unlikely((tmp & FRDY) == 0)) {
1337                pipe_stop(r8a66597, td->pipe);
1338                pipe_irq_disable(r8a66597, pipenum);
1339                printk(KERN_ERR "r8a66597: in fifo not ready (%d)\n", pipenum);
1340                finish_request(r8a66597, td, pipenum, td->urb, -EPIPE);
1341                return;
1342        }
1343
1344        /* prepare parameters */
1345        rcv_len = tmp & DTLN;
1346        if (usb_pipeisoc(urb->pipe)) {
1347                buf = (u16 *)(urb->transfer_buffer +
1348                                urb->iso_frame_desc[td->iso_cnt].offset);
1349                urb_len = urb->iso_frame_desc[td->iso_cnt].length;
1350        } else {
1351                buf = (void *)urb->transfer_buffer + urb->actual_length;
1352                urb_len = urb->transfer_buffer_length - urb->actual_length;
1353        }
1354        bufsize = min(urb_len, (int) td->maxpacket);
1355        if (rcv_len <= bufsize) {
1356                size = rcv_len;
1357        } else {
1358                size = bufsize;
1359                status = -EOVERFLOW;
1360                finish = 1;
1361        }
1362
1363        /* update parameters */
1364        urb->actual_length += size;
1365        if (rcv_len == 0)
1366                td->zero_packet = 1;
1367        if (rcv_len < bufsize) {
1368                td->short_packet = 1;
1369        }
1370        if (usb_pipeisoc(urb->pipe)) {
1371                urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1372                urb->iso_frame_desc[td->iso_cnt].status = status;
1373                td->iso_cnt++;
1374                finish = 0;
1375        }
1376
1377        /* check transfer finish */
1378        if (finish || check_transfer_finish(td, urb)) {
1379                pipe_stop(r8a66597, td->pipe);
1380                pipe_irq_disable(r8a66597, pipenum);
1381                finish = 1;
1382        }
1383
1384        /* read fifo */
1385        if (urb->transfer_buffer) {
1386                if (size == 0)
1387                        r8a66597_write(r8a66597, BCLR, td->pipe->fifoctr);
1388                else
1389                        r8a66597_read_fifo(r8a66597, td->pipe->fifoaddr,
1390                                           buf, size);
1391        }
1392
1393        if (finish && pipenum != 0)
1394                finish_request(r8a66597, td, pipenum, urb, status);
1395}
1396
1397static void packet_write(struct r8a66597 *r8a66597, u16 pipenum)
1398{
1399        u16 tmp;
1400        int bufsize, size;
1401        u16 *buf;
1402        struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1403        struct urb *urb;
1404
1405        if (unlikely(!td))
1406                return;
1407        urb = td->urb;
1408
1409        fifo_change_from_pipe(r8a66597, td->pipe);
1410        tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1411        if (unlikely((tmp & FRDY) == 0)) {
1412                pipe_stop(r8a66597, td->pipe);
1413                pipe_irq_disable(r8a66597, pipenum);
1414                printk(KERN_ERR "r8a66597: out fifo not ready (%d)\n", pipenum);
1415                finish_request(r8a66597, td, pipenum, urb, -EPIPE);
1416                return;
1417        }
1418
1419        /* prepare parameters */
1420        bufsize = td->maxpacket;
1421        if (usb_pipeisoc(urb->pipe)) {
1422                buf = (u16 *)(urb->transfer_buffer +
1423                                urb->iso_frame_desc[td->iso_cnt].offset);
1424                size = min(bufsize,
1425                           (int)urb->iso_frame_desc[td->iso_cnt].length);
1426        } else {
1427                buf = (u16 *)(urb->transfer_buffer + urb->actual_length);
1428                size = min_t(u32, bufsize,
1429                           urb->transfer_buffer_length - urb->actual_length);
1430        }
1431
1432        /* write fifo */
1433        if (pipenum > 0)
1434                r8a66597_write(r8a66597, ~(1 << pipenum), BEMPSTS);
1435        if (urb->transfer_buffer) {
1436                r8a66597_write_fifo(r8a66597, td->pipe, buf, size);
1437                if (!usb_pipebulk(urb->pipe) || td->maxpacket != size)
1438                        r8a66597_write(r8a66597, BVAL, td->pipe->fifoctr);
1439        }
1440
1441        /* update parameters */
1442        urb->actual_length += size;
1443        if (usb_pipeisoc(urb->pipe)) {
1444                urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1445                urb->iso_frame_desc[td->iso_cnt].status = 0;
1446                td->iso_cnt++;
1447        }
1448
1449        /* check transfer finish */
1450        if (check_transfer_finish(td, urb)) {
1451                disable_irq_ready(r8a66597, pipenum);
1452                enable_irq_empty(r8a66597, pipenum);
1453                if (!usb_pipeisoc(urb->pipe))
1454                        enable_irq_nrdy(r8a66597, pipenum);
1455        } else
1456                pipe_irq_enable(r8a66597, urb, pipenum);
1457}
1458
1459
1460static void check_next_phase(struct r8a66597 *r8a66597, int status)
1461{
1462        struct r8a66597_td *td = r8a66597_get_td(r8a66597, 0);
1463        struct urb *urb;
1464        u8 finish = 0;
1465
1466        if (unlikely(!td))
1467                return;
1468        urb = td->urb;
1469
1470        switch (td->type) {
1471        case USB_PID_IN:
1472        case USB_PID_OUT:
1473                if (check_transfer_finish(td, urb))
1474                        td->type = USB_PID_ACK;
1475                break;
1476        case USB_PID_SETUP:
1477                if (urb->transfer_buffer_length == urb->actual_length)
1478                        td->type = USB_PID_ACK;
1479                else if (usb_pipeout(urb->pipe))
1480                        td->type = USB_PID_OUT;
1481                else
1482                        td->type = USB_PID_IN;
1483                break;
1484        case USB_PID_ACK:
1485                finish = 1;
1486                break;
1487        }
1488
1489        if (finish || status != 0 || urb->unlinked)
1490                finish_request(r8a66597, td, 0, urb, status);
1491        else
1492                start_transfer(r8a66597, td);
1493}
1494
1495static int get_urb_error(struct r8a66597 *r8a66597, u16 pipenum)
1496{
1497        struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1498
1499        if (td) {
1500                u16 pid = r8a66597_read(r8a66597, td->pipe->pipectr) & PID;
1501
1502                if (pid == PID_NAK)
1503                        return -ECONNRESET;
1504                else
1505                        return -EPIPE;
1506        }
1507        return 0;
1508}
1509
1510static void irq_pipe_ready(struct r8a66597 *r8a66597)
1511{
1512        u16 check;
1513        u16 pipenum;
1514        u16 mask;
1515        struct r8a66597_td *td;
1516
1517        mask = r8a66597_read(r8a66597, BRDYSTS)
1518               & r8a66597_read(r8a66597, BRDYENB);
1519        r8a66597_write(r8a66597, ~mask, BRDYSTS);
1520        if (mask & BRDY0) {
1521                td = r8a66597_get_td(r8a66597, 0);
1522                if (td && td->type == USB_PID_IN)
1523                        packet_read(r8a66597, 0);
1524                else
1525                        pipe_irq_disable(r8a66597, 0);
1526                check_next_phase(r8a66597, 0);
1527        }
1528
1529        for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1530                check = 1 << pipenum;
1531                if (mask & check) {
1532                        td = r8a66597_get_td(r8a66597, pipenum);
1533                        if (unlikely(!td))
1534                                continue;
1535
1536                        if (td->type == USB_PID_IN)
1537                                packet_read(r8a66597, pipenum);
1538                        else if (td->type == USB_PID_OUT)
1539                                packet_write(r8a66597, pipenum);
1540                }
1541        }
1542}
1543
1544static void irq_pipe_empty(struct r8a66597 *r8a66597)
1545{
1546        u16 tmp;
1547        u16 check;
1548        u16 pipenum;
1549        u16 mask;
1550        struct r8a66597_td *td;
1551
1552        mask = r8a66597_read(r8a66597, BEMPSTS)
1553               & r8a66597_read(r8a66597, BEMPENB);
1554        r8a66597_write(r8a66597, ~mask, BEMPSTS);
1555        if (mask & BEMP0) {
1556                cfifo_change(r8a66597, 0);
1557                td = r8a66597_get_td(r8a66597, 0);
1558                if (td && td->type != USB_PID_OUT)
1559                        disable_irq_empty(r8a66597, 0);
1560                check_next_phase(r8a66597, 0);
1561        }
1562
1563        for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1564                check = 1 << pipenum;
1565                if (mask &  check) {
1566                        struct r8a66597_td *td;
1567                        td = r8a66597_get_td(r8a66597, pipenum);
1568                        if (unlikely(!td))
1569                                continue;
1570
1571                        tmp = r8a66597_read(r8a66597, td->pipe->pipectr);
1572                        if ((tmp & INBUFM) == 0) {
1573                                disable_irq_empty(r8a66597, pipenum);
1574                                pipe_irq_disable(r8a66597, pipenum);
1575                                finish_request(r8a66597, td, pipenum, td->urb,
1576                                                0);
1577                        }
1578                }
1579        }
1580}
1581
1582static void irq_pipe_nrdy(struct r8a66597 *r8a66597)
1583{
1584        u16 check;
1585        u16 pipenum;
1586        u16 mask;
1587        int status;
1588
1589        mask = r8a66597_read(r8a66597, NRDYSTS)
1590               & r8a66597_read(r8a66597, NRDYENB);
1591        r8a66597_write(r8a66597, ~mask, NRDYSTS);
1592        if (mask & NRDY0) {
1593                cfifo_change(r8a66597, 0);
1594                status = get_urb_error(r8a66597, 0);
1595                pipe_irq_disable(r8a66597, 0);
1596                check_next_phase(r8a66597, status);
1597        }
1598
1599        for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1600                check = 1 << pipenum;
1601                if (mask & check) {
1602                        struct r8a66597_td *td;
1603                        td = r8a66597_get_td(r8a66597, pipenum);
1604                        if (unlikely(!td))
1605                                continue;
1606
1607                        status = get_urb_error(r8a66597, pipenum);
1608                        pipe_irq_disable(r8a66597, pipenum);
1609                        pipe_stop(r8a66597, td->pipe);
1610                        finish_request(r8a66597, td, pipenum, td->urb, status);
1611                }
1612        }
1613}
1614
1615static irqreturn_t r8a66597_irq(struct usb_hcd *hcd)
1616{
1617        struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1618        u16 intsts0, intsts1, intsts2;
1619        u16 intenb0, intenb1, intenb2;
1620        u16 mask0, mask1, mask2;
1621        int status;
1622
1623        spin_lock(&r8a66597->lock);
1624
1625        intsts0 = r8a66597_read(r8a66597, INTSTS0);
1626        intsts1 = r8a66597_read(r8a66597, INTSTS1);
1627        intsts2 = r8a66597_read(r8a66597, INTSTS2);
1628        intenb0 = r8a66597_read(r8a66597, INTENB0);
1629        intenb1 = r8a66597_read(r8a66597, INTENB1);
1630        intenb2 = r8a66597_read(r8a66597, INTENB2);
1631
1632        mask2 = intsts2 & intenb2;
1633        mask1 = intsts1 & intenb1;
1634        mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY);
1635        if (mask2) {
1636                if (mask2 & ATTCH) {
1637                        r8a66597_write(r8a66597, ~ATTCH, INTSTS2);
1638                        r8a66597_bclr(r8a66597, ATTCHE, INTENB2);
1639
1640                        /* start usb bus sampling */
1641                        start_root_hub_sampling(r8a66597, 1, 1);
1642                }
1643                if (mask2 & DTCH) {
1644                        r8a66597_write(r8a66597, ~DTCH, INTSTS2);
1645                        r8a66597_bclr(r8a66597, DTCHE, INTENB2);
1646                        r8a66597_usb_disconnect(r8a66597, 1);
1647                }
1648                if (mask2 & BCHG) {
1649                        r8a66597_write(r8a66597, ~BCHG, INTSTS2);
1650                        r8a66597_bclr(r8a66597, BCHGE, INTENB2);
1651                        usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597));
1652                }
1653        }
1654
1655        if (mask1) {
1656                if (mask1 & ATTCH) {
1657                        r8a66597_write(r8a66597, ~ATTCH, INTSTS1);
1658                        r8a66597_bclr(r8a66597, ATTCHE, INTENB1);
1659
1660                        /* start usb bus sampling */
1661                        start_root_hub_sampling(r8a66597, 0, 1);
1662                }
1663                if (mask1 & DTCH) {
1664                        r8a66597_write(r8a66597, ~DTCH, INTSTS1);
1665                        r8a66597_bclr(r8a66597, DTCHE, INTENB1);
1666                        r8a66597_usb_disconnect(r8a66597, 0);
1667                }
1668                if (mask1 & BCHG) {
1669                        r8a66597_write(r8a66597, ~BCHG, INTSTS1);
1670                        r8a66597_bclr(r8a66597, BCHGE, INTENB1);
1671                        usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597));
1672                }
1673
1674                if (mask1 & SIGN) {
1675                        r8a66597_write(r8a66597, ~SIGN, INTSTS1);
1676                        status = get_urb_error(r8a66597, 0);
1677                        check_next_phase(r8a66597, status);
1678                }
1679                if (mask1 & SACK) {
1680                        r8a66597_write(r8a66597, ~SACK, INTSTS1);
1681                        check_next_phase(r8a66597, 0);
1682                }
1683        }
1684        if (mask0) {
1685                if (mask0 & BRDY)
1686                        irq_pipe_ready(r8a66597);
1687                if (mask0 & BEMP)
1688                        irq_pipe_empty(r8a66597);
1689                if (mask0 & NRDY)
1690                        irq_pipe_nrdy(r8a66597);
1691        }
1692
1693        spin_unlock(&r8a66597->lock);
1694        return IRQ_HANDLED;
1695}
1696
1697/* this function must be called with interrupt disabled */
1698static void r8a66597_root_hub_control(struct r8a66597 *r8a66597, int port)
1699{
1700        u16 tmp;
1701        struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1702
1703        if (rh->port & USB_PORT_STAT_RESET) {
1704                unsigned long dvstctr_reg = get_dvstctr_reg(port);
1705
1706                tmp = r8a66597_read(r8a66597, dvstctr_reg);
1707                if ((tmp & USBRST) == USBRST) {
1708                        r8a66597_mdfy(r8a66597, UACT, USBRST | UACT,
1709                                      dvstctr_reg);
1710                        r8a66597_root_hub_start_polling(r8a66597);
1711                } else
1712                        r8a66597_usb_connect(r8a66597, port);
1713        }
1714
1715        if (!(rh->port & USB_PORT_STAT_CONNECTION)) {
1716                r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port));
1717                r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
1718        }
1719
1720        if (rh->scount > 0) {
1721                tmp = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
1722                if (tmp == rh->old_syssts) {
1723                        rh->scount--;
1724                        if (rh->scount == 0)
1725                                r8a66597_check_syssts(r8a66597, port, tmp);
1726                        else
1727                                r8a66597_root_hub_start_polling(r8a66597);
1728                } else {
1729                        rh->scount = R8A66597_MAX_SAMPLING;
1730                        rh->old_syssts = tmp;
1731                        r8a66597_root_hub_start_polling(r8a66597);
1732                }
1733        }
1734}
1735
1736static void r8a66597_interval_timer(unsigned long _r8a66597)
1737{
1738        struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1739        unsigned long flags;
1740        u16 pipenum;
1741        struct r8a66597_td *td;
1742
1743        spin_lock_irqsave(&r8a66597->lock, flags);
1744
1745        for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1746                if (!(r8a66597->interval_map & (1 << pipenum)))
1747                        continue;
1748                if (timer_pending(&r8a66597->interval_timer[pipenum]))
1749                        continue;
1750
1751                td = r8a66597_get_td(r8a66597, pipenum);
1752                if (td)
1753                        start_transfer(r8a66597, td);
1754        }
1755
1756        spin_unlock_irqrestore(&r8a66597->lock, flags);
1757}
1758
1759static void r8a66597_td_timer(unsigned long _r8a66597)
1760{
1761        struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1762        unsigned long flags;
1763        u16 pipenum;
1764        struct r8a66597_td *td, *new_td = NULL;
1765        struct r8a66597_pipe *pipe;
1766
1767        spin_lock_irqsave(&r8a66597->lock, flags);
1768        for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1769                if (!(r8a66597->timeout_map & (1 << pipenum)))
1770                        continue;
1771                if (timer_pending(&r8a66597->td_timer[pipenum]))
1772                        continue;
1773
1774                td = r8a66597_get_td(r8a66597, pipenum);
1775                if (!td) {
1776                        r8a66597->timeout_map &= ~(1 << pipenum);
1777                        continue;
1778                }
1779
1780                if (td->urb->actual_length) {
1781                        set_td_timer(r8a66597, td);
1782                        break;
1783                }
1784
1785                pipe = td->pipe;
1786                pipe_stop(r8a66597, pipe);
1787
1788                new_td = td;
1789                do {
1790                        list_move_tail(&new_td->queue,
1791                                       &r8a66597->pipe_queue[pipenum]);
1792                        new_td = r8a66597_get_td(r8a66597, pipenum);
1793                        if (!new_td) {
1794                                new_td = td;
1795                                break;
1796                        }
1797                } while (td != new_td && td->address == new_td->address);
1798
1799                start_transfer(r8a66597, new_td);
1800
1801                if (td == new_td)
1802                        r8a66597->timeout_map &= ~(1 << pipenum);
1803                else
1804                        set_td_timer(r8a66597, new_td);
1805                break;
1806        }
1807        spin_unlock_irqrestore(&r8a66597->lock, flags);
1808}
1809
1810static void r8a66597_timer(unsigned long _r8a66597)
1811{
1812        struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1813        unsigned long flags;
1814        int port;
1815
1816        spin_lock_irqsave(&r8a66597->lock, flags);
1817
1818        for (port = 0; port < r8a66597->max_root_hub; port++)
1819                r8a66597_root_hub_control(r8a66597, port);
1820
1821        spin_unlock_irqrestore(&r8a66597->lock, flags);
1822}
1823
1824static int check_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
1825{
1826        struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
1827
1828        if (dev && dev->address && dev->state != USB_STATE_CONFIGURED &&
1829            (urb->dev->state == USB_STATE_CONFIGURED))
1830                return 1;
1831        else
1832                return 0;
1833}
1834
1835static int r8a66597_start(struct usb_hcd *hcd)
1836{
1837        struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1838
1839        hcd->state = HC_STATE_RUNNING;
1840        return enable_controller(r8a66597);
1841}
1842
1843static void r8a66597_stop(struct usb_hcd *hcd)
1844{
1845        struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1846
1847        disable_controller(r8a66597);
1848}
1849
1850static void set_address_zero(struct r8a66597 *r8a66597, struct urb *urb)
1851{
1852        unsigned int usb_address = usb_pipedevice(urb->pipe);
1853        u16 root_port, hub_port;
1854
1855        if (usb_address == 0) {
1856                get_port_number(r8a66597, urb->dev->devpath,
1857                                &root_port, &hub_port);
1858                set_devadd_reg(r8a66597, 0,
1859                               get_r8a66597_usb_speed(urb->dev->speed),
1860                               get_parent_r8a66597_address(r8a66597, urb->dev),
1861                               hub_port, root_port);
1862        }
1863}
1864
1865static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597,
1866                                            struct urb *urb,
1867                                            struct usb_host_endpoint *hep)
1868{
1869        struct r8a66597_td *td;
1870        u16 pipenum;
1871
1872        td = kzalloc(sizeof(struct r8a66597_td), GFP_ATOMIC);
1873        if (td == NULL)
1874                return NULL;
1875
1876        pipenum = r8a66597_get_pipenum(urb, hep);
1877        td->pipenum = pipenum;
1878        td->pipe = hep->hcpriv;
1879        td->urb = urb;
1880        td->address = get_urb_to_r8a66597_addr(r8a66597, urb);
1881        td->maxpacket = usb_maxpacket(urb->dev, urb->pipe,
1882                                      !usb_pipein(urb->pipe));
1883        if (usb_pipecontrol(urb->pipe))
1884                td->type = USB_PID_SETUP;
1885        else if (usb_pipein(urb->pipe))
1886                td->type = USB_PID_IN;
1887        else
1888                td->type = USB_PID_OUT;
1889        INIT_LIST_HEAD(&td->queue);
1890
1891        return td;
1892}
1893
1894static int r8a66597_urb_enqueue(struct usb_hcd *hcd,
1895                                struct urb *urb,
1896                                gfp_t mem_flags)
1897{
1898        struct usb_host_endpoint *hep = urb->ep;
1899        struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1900        struct r8a66597_td *td = NULL;
1901        int ret, request = 0;
1902        unsigned long flags;
1903
1904        spin_lock_irqsave(&r8a66597->lock, flags);
1905        if (!get_urb_to_r8a66597_dev(r8a66597, urb)) {
1906                ret = -ENODEV;
1907                goto error_not_linked;
1908        }
1909
1910        ret = usb_hcd_link_urb_to_ep(hcd, urb);
1911        if (ret)
1912                goto error_not_linked;
1913
1914        if (!hep->hcpriv) {
1915                hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe),
1916                                GFP_ATOMIC);
1917                if (!hep->hcpriv) {
1918                        ret = -ENOMEM;
1919                        goto error;
1920                }
1921                set_pipe_reg_addr(hep->hcpriv, R8A66597_PIPE_NO_DMA);
1922                if (usb_pipeendpoint(urb->pipe))
1923                        init_pipe_info(r8a66597, urb, hep, &hep->desc);
1924        }
1925
1926        if (unlikely(check_pipe_config(r8a66597, urb)))
1927                init_pipe_config(r8a66597, urb);
1928
1929        set_address_zero(r8a66597, urb);
1930        td = r8a66597_make_td(r8a66597, urb, hep);
1931        if (td == NULL) {
1932                ret = -ENOMEM;
1933                goto error;
1934        }
1935        if (list_empty(&r8a66597->pipe_queue[td->pipenum]))
1936                request = 1;
1937        list_add_tail(&td->queue, &r8a66597->pipe_queue[td->pipenum]);
1938        urb->hcpriv = td;
1939
1940        if (request) {
1941                if (td->pipe->info.timer_interval) {
1942                        r8a66597->interval_map |= 1 << td->pipenum;
1943                        mod_timer(&r8a66597->interval_timer[td->pipenum],
1944                                  jiffies + msecs_to_jiffies(
1945                                        td->pipe->info.timer_interval));
1946                } else {
1947                        ret = start_transfer(r8a66597, td);
1948                        if (ret < 0) {
1949                                list_del(&td->queue);
1950                                kfree(td);
1951                        }
1952                }
1953        } else
1954                set_td_timer(r8a66597, td);
1955
1956error:
1957        if (ret)
1958                usb_hcd_unlink_urb_from_ep(hcd, urb);
1959error_not_linked:
1960        spin_unlock_irqrestore(&r8a66597->lock, flags);
1961        return ret;
1962}
1963
1964static int r8a66597_urb_dequeue(struct usb_hcd *hcd, struct urb *urb,
1965                int status)
1966{
1967        struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1968        struct r8a66597_td *td;
1969        unsigned long flags;
1970        int rc;
1971
1972        spin_lock_irqsave(&r8a66597->lock, flags);
1973        rc = usb_hcd_check_unlink_urb(hcd, urb, status);
1974        if (rc)
1975                goto done;
1976
1977        if (urb->hcpriv) {
1978                td = urb->hcpriv;
1979                pipe_stop(r8a66597, td->pipe);
1980                pipe_irq_disable(r8a66597, td->pipenum);
1981                disable_irq_empty(r8a66597, td->pipenum);
1982                finish_request(r8a66597, td, td->pipenum, urb, status);
1983        }
1984 done:
1985        spin_unlock_irqrestore(&r8a66597->lock, flags);
1986        return rc;
1987}
1988
1989static void r8a66597_endpoint_disable(struct usb_hcd *hcd,
1990                                      struct usb_host_endpoint *hep)
1991{
1992        struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1993        struct r8a66597_pipe *pipe = (struct r8a66597_pipe *)hep->hcpriv;
1994        struct r8a66597_td *td;
1995        struct urb *urb = NULL;
1996        u16 pipenum;
1997        unsigned long flags;
1998
1999        if (pipe == NULL)
2000                return;
2001        pipenum = pipe->info.pipenum;
2002
2003        if (pipenum == 0) {
2004                kfree(hep->hcpriv);
2005                hep->hcpriv = NULL;
2006                return;
2007        }
2008
2009        spin_lock_irqsave(&r8a66597->lock, flags);
2010        pipe_stop(r8a66597, pipe);
2011        pipe_irq_disable(r8a66597, pipenum);
2012        disable_irq_empty(r8a66597, pipenum);
2013        td = r8a66597_get_td(r8a66597, pipenum);
2014        if (td)
2015                urb = td->urb;
2016        finish_request(r8a66597, td, pipenum, urb, -ESHUTDOWN);
2017        kfree(hep->hcpriv);
2018        hep->hcpriv = NULL;
2019        spin_unlock_irqrestore(&r8a66597->lock, flags);
2020}
2021
2022static int r8a66597_get_frame(struct usb_hcd *hcd)
2023{
2024        struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2025        return r8a66597_read(r8a66597, FRMNUM) & 0x03FF;
2026}
2027
2028static void collect_usb_address_map(struct usb_device *udev, unsigned long *map)
2029{
2030        int chix;
2031        struct usb_device *childdev;
2032
2033        if (udev->state == USB_STATE_CONFIGURED &&
2034            udev->parent && udev->parent->devnum > 1 &&
2035            udev->parent->descriptor.bDeviceClass == USB_CLASS_HUB)
2036                map[udev->devnum/32] |= (1 << (udev->devnum % 32));
2037
2038        usb_hub_for_each_child(udev, chix, childdev)
2039                collect_usb_address_map(childdev, map);
2040}
2041
2042/* this function must be called with interrupt disabled */
2043static struct r8a66597_device *get_r8a66597_device(struct r8a66597 *r8a66597,
2044                                                   int addr)
2045{
2046        struct r8a66597_device *dev;
2047        struct list_head *list = &r8a66597->child_device;
2048
2049        list_for_each_entry(dev, list, device_list) {
2050                if (dev->usb_address != addr)
2051                        continue;
2052
2053                return dev;
2054        }
2055
2056        printk(KERN_ERR "r8a66597: get_r8a66597_device fail.(%d)\n", addr);
2057        return NULL;
2058}
2059
2060static void update_usb_address_map(struct r8a66597 *r8a66597,
2061                                   struct usb_device *root_hub,
2062                                   unsigned long *map)
2063{
2064        int i, j, addr;
2065        unsigned long diff;
2066        unsigned long flags;
2067
2068        for (i = 0; i < 4; i++) {
2069                diff = r8a66597->child_connect_map[i] ^ map[i];
2070                if (!diff)
2071                        continue;
2072
2073                for (j = 0; j < 32; j++) {
2074                        if (!(diff & (1 << j)))
2075                                continue;
2076
2077                        addr = i * 32 + j;
2078                        if (map[i] & (1 << j))
2079                                set_child_connect_map(r8a66597, addr);
2080                        else {
2081                                struct r8a66597_device *dev;
2082
2083                                spin_lock_irqsave(&r8a66597->lock, flags);
2084                                dev = get_r8a66597_device(r8a66597, addr);
2085                                disable_r8a66597_pipe_all(r8a66597, dev);
2086                                free_usb_address(r8a66597, dev, 0);
2087                                put_child_connect_map(r8a66597, addr);
2088                                spin_unlock_irqrestore(&r8a66597->lock, flags);
2089                        }
2090                }
2091        }
2092}
2093
2094static void r8a66597_check_detect_child(struct r8a66597 *r8a66597,
2095                                        struct usb_hcd *hcd)
2096{
2097        struct usb_bus *bus;
2098        unsigned long now_map[4];
2099
2100        memset(now_map, 0, sizeof(now_map));
2101
2102        mutex_lock(&usb_bus_idr_lock);
2103        bus = idr_find(&usb_bus_idr, hcd->self.busnum);
2104        if (bus && bus->root_hub) {
2105                collect_usb_address_map(bus->root_hub, now_map);
2106                update_usb_address_map(r8a66597, bus->root_hub, now_map);
2107        }
2108        mutex_unlock(&usb_bus_idr_lock);
2109}
2110
2111static int r8a66597_hub_status_data(struct usb_hcd *hcd, char *buf)
2112{
2113        struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2114        unsigned long flags;
2115        int i;
2116
2117        r8a66597_check_detect_child(r8a66597, hcd);
2118
2119        spin_lock_irqsave(&r8a66597->lock, flags);
2120
2121        *buf = 0;       /* initialize (no change) */
2122
2123        for (i = 0; i < r8a66597->max_root_hub; i++) {
2124                if (r8a66597->root_hub[i].port & 0xffff0000)
2125                        *buf |= 1 << (i + 1);
2126        }
2127
2128        spin_unlock_irqrestore(&r8a66597->lock, flags);
2129
2130        return (*buf != 0);
2131}
2132
2133static void r8a66597_hub_descriptor(struct r8a66597 *r8a66597,
2134                                    struct usb_hub_descriptor *desc)
2135{
2136        desc->bDescriptorType = USB_DT_HUB;
2137        desc->bHubContrCurrent = 0;
2138        desc->bNbrPorts = r8a66597->max_root_hub;
2139        desc->bDescLength = 9;
2140        desc->bPwrOn2PwrGood = 0;
2141        desc->wHubCharacteristics =
2142                cpu_to_le16(HUB_CHAR_INDV_PORT_LPSM | HUB_CHAR_NO_OCPM);
2143        desc->u.hs.DeviceRemovable[0] =
2144                ((1 << r8a66597->max_root_hub) - 1) << 1;
2145        desc->u.hs.DeviceRemovable[1] = ~0;
2146}
2147
2148static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
2149                                u16 wIndex, char *buf, u16 wLength)
2150{
2151        struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2152        int ret;
2153        int port = (wIndex & 0x00FF) - 1;
2154        struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
2155        unsigned long flags;
2156
2157        ret = 0;
2158
2159        spin_lock_irqsave(&r8a66597->lock, flags);
2160        switch (typeReq) {
2161        case ClearHubFeature:
2162        case SetHubFeature:
2163                switch (wValue) {
2164                case C_HUB_OVER_CURRENT:
2165                case C_HUB_LOCAL_POWER:
2166                        break;
2167                default:
2168                        goto error;
2169                }
2170                break;
2171        case ClearPortFeature:
2172                if (wIndex > r8a66597->max_root_hub)
2173                        goto error;
2174                if (wLength != 0)
2175                        goto error;
2176
2177                switch (wValue) {
2178                case USB_PORT_FEAT_ENABLE:
2179                        rh->port &= ~USB_PORT_STAT_POWER;
2180                        break;
2181                case USB_PORT_FEAT_SUSPEND:
2182                        break;
2183                case USB_PORT_FEAT_POWER:
2184                        r8a66597_port_power(r8a66597, port, 0);
2185                        break;
2186                case USB_PORT_FEAT_C_ENABLE:
2187                case USB_PORT_FEAT_C_SUSPEND:
2188                case USB_PORT_FEAT_C_CONNECTION:
2189                case USB_PORT_FEAT_C_OVER_CURRENT:
2190                case USB_PORT_FEAT_C_RESET:
2191                        break;
2192                default:
2193                        goto error;
2194                }
2195                rh->port &= ~(1 << wValue);
2196                break;
2197        case GetHubDescriptor:
2198                r8a66597_hub_descriptor(r8a66597,
2199                                        (struct usb_hub_descriptor *)buf);
2200                break;
2201        case GetHubStatus:
2202                *buf = 0x00;
2203                break;
2204        case GetPortStatus:
2205                if (wIndex > r8a66597->max_root_hub)
2206                        goto error;
2207                *(__le32 *)buf = cpu_to_le32(rh->port);
2208                break;
2209        case SetPortFeature:
2210                if (wIndex > r8a66597->max_root_hub)
2211                        goto error;
2212                if (wLength != 0)
2213                        goto error;
2214
2215                switch (wValue) {
2216                case USB_PORT_FEAT_SUSPEND:
2217                        break;
2218                case USB_PORT_FEAT_POWER:
2219                        r8a66597_port_power(r8a66597, port, 1);
2220                        rh->port |= USB_PORT_STAT_POWER;
2221                        break;
2222                case USB_PORT_FEAT_RESET: {
2223                        struct r8a66597_device *dev = rh->dev;
2224
2225                        rh->port |= USB_PORT_STAT_RESET;
2226
2227                        disable_r8a66597_pipe_all(r8a66597, dev);
2228                        free_usb_address(r8a66597, dev, 1);
2229
2230                        r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT,
2231                                      get_dvstctr_reg(port));
2232                        mod_timer(&r8a66597->rh_timer,
2233                                  jiffies + msecs_to_jiffies(50));
2234                        }
2235                        break;
2236                default:
2237                        goto error;
2238                }
2239                rh->port |= 1 << wValue;
2240                break;
2241        default:
2242error:
2243                ret = -EPIPE;
2244                break;
2245        }
2246
2247        spin_unlock_irqrestore(&r8a66597->lock, flags);
2248        return ret;
2249}
2250
2251#if defined(CONFIG_PM)
2252static int r8a66597_bus_suspend(struct usb_hcd *hcd)
2253{
2254        struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2255        int port;
2256
2257        dev_dbg(&r8a66597->device0.udev->dev, "%s\n", __func__);
2258
2259        for (port = 0; port < r8a66597->max_root_hub; port++) {
2260                struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
2261                unsigned long dvstctr_reg = get_dvstctr_reg(port);
2262
2263                if (!(rh->port & USB_PORT_STAT_ENABLE))
2264                        continue;
2265
2266                dev_dbg(&rh->dev->udev->dev, "suspend port = %d\n", port);
2267                r8a66597_bclr(r8a66597, UACT, dvstctr_reg);     /* suspend */
2268                rh->port |= USB_PORT_STAT_SUSPEND;
2269
2270                if (rh->dev->udev->do_remote_wakeup) {
2271                        msleep(3);      /* waiting last SOF */
2272                        r8a66597_bset(r8a66597, RWUPE, dvstctr_reg);
2273                        r8a66597_write(r8a66597, ~BCHG, get_intsts_reg(port));
2274                        r8a66597_bset(r8a66597, BCHGE, get_intenb_reg(port));
2275                }
2276        }
2277
2278        r8a66597->bus_suspended = 1;
2279
2280        return 0;
2281}
2282
2283static int r8a66597_bus_resume(struct usb_hcd *hcd)
2284{
2285        struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2286        int port;
2287
2288        dev_dbg(&r8a66597->device0.udev->dev, "%s\n", __func__);
2289
2290        for (port = 0; port < r8a66597->max_root_hub; port++) {
2291                struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
2292                unsigned long dvstctr_reg = get_dvstctr_reg(port);
2293
2294                if (!(rh->port & USB_PORT_STAT_SUSPEND))
2295                        continue;
2296
2297                dev_dbg(&rh->dev->udev->dev, "resume port = %d\n", port);
2298                rh->port &= ~USB_PORT_STAT_SUSPEND;
2299                rh->port |= USB_PORT_STAT_C_SUSPEND << 16;
2300                r8a66597_mdfy(r8a66597, RESUME, RESUME | UACT, dvstctr_reg);
2301                msleep(USB_RESUME_TIMEOUT);
2302                r8a66597_mdfy(r8a66597, UACT, RESUME | UACT, dvstctr_reg);
2303        }
2304
2305        return 0;
2306
2307}
2308#else
2309#define r8a66597_bus_suspend    NULL
2310#define r8a66597_bus_resume     NULL
2311#endif
2312
2313static struct hc_driver r8a66597_hc_driver = {
2314        .description =          hcd_name,
2315        .hcd_priv_size =        sizeof(struct r8a66597),
2316        .irq =                  r8a66597_irq,
2317
2318        /*
2319         * generic hardware linkage
2320         */
2321        .flags =                HCD_USB2,
2322
2323        .start =                r8a66597_start,
2324        .stop =                 r8a66597_stop,
2325
2326        /*
2327         * managing i/o requests and associated device resources
2328         */
2329        .urb_enqueue =          r8a66597_urb_enqueue,
2330        .urb_dequeue =          r8a66597_urb_dequeue,
2331        .endpoint_disable =     r8a66597_endpoint_disable,
2332
2333        /*
2334         * periodic schedule support
2335         */
2336        .get_frame_number =     r8a66597_get_frame,
2337
2338        /*
2339         * root hub support
2340         */
2341        .hub_status_data =      r8a66597_hub_status_data,
2342        .hub_control =          r8a66597_hub_control,
2343        .bus_suspend =          r8a66597_bus_suspend,
2344        .bus_resume =           r8a66597_bus_resume,
2345};
2346
2347#if defined(CONFIG_PM)
2348static int r8a66597_suspend(struct device *dev)
2349{
2350        struct r8a66597         *r8a66597 = dev_get_drvdata(dev);
2351        int port;
2352
2353        dev_dbg(dev, "%s\n", __func__);
2354
2355        disable_controller(r8a66597);
2356
2357        for (port = 0; port < r8a66597->max_root_hub; port++) {
2358                struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
2359
2360                rh->port = 0x00000000;
2361        }
2362
2363        return 0;
2364}
2365
2366static int r8a66597_resume(struct device *dev)
2367{
2368        struct r8a66597         *r8a66597 = dev_get_drvdata(dev);
2369        struct usb_hcd          *hcd = r8a66597_to_hcd(r8a66597);
2370
2371        dev_dbg(dev, "%s\n", __func__);
2372
2373        enable_controller(r8a66597);
2374        usb_root_hub_lost_power(hcd->self.root_hub);
2375
2376        return 0;
2377}
2378
2379static const struct dev_pm_ops r8a66597_dev_pm_ops = {
2380        .suspend = r8a66597_suspend,
2381        .resume = r8a66597_resume,
2382        .poweroff = r8a66597_suspend,
2383        .restore = r8a66597_resume,
2384};
2385
2386#define R8A66597_DEV_PM_OPS     (&r8a66597_dev_pm_ops)
2387#else   /* if defined(CONFIG_PM) */
2388#define R8A66597_DEV_PM_OPS     NULL
2389#endif
2390
2391static int r8a66597_remove(struct platform_device *pdev)
2392{
2393        struct r8a66597         *r8a66597 = platform_get_drvdata(pdev);
2394        struct usb_hcd          *hcd = r8a66597_to_hcd(r8a66597);
2395
2396        del_timer_sync(&r8a66597->rh_timer);
2397        usb_remove_hcd(hcd);
2398        iounmap(r8a66597->reg);
2399        if (r8a66597->pdata->on_chip)
2400                clk_put(r8a66597->clk);
2401        usb_put_hcd(hcd);
2402        return 0;
2403}
2404
2405static int r8a66597_probe(struct platform_device *pdev)
2406{
2407        char clk_name[8];
2408        struct resource *res = NULL, *ires;
2409        int irq = -1;
2410        void __iomem *reg = NULL;
2411        struct usb_hcd *hcd = NULL;
2412        struct r8a66597 *r8a66597;
2413        int ret = 0;
2414        int i;
2415        unsigned long irq_trigger;
2416
2417        if (usb_disabled())
2418                return -ENODEV;
2419
2420        if (pdev->dev.dma_mask) {
2421                ret = -EINVAL;
2422                dev_err(&pdev->dev, "dma not supported\n");
2423                goto clean_up;
2424        }
2425
2426        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2427        if (!res) {
2428                ret = -ENODEV;
2429                dev_err(&pdev->dev, "platform_get_resource error.\n");
2430                goto clean_up;
2431        }
2432
2433        ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
2434        if (!ires) {
2435                ret = -ENODEV;
2436                dev_err(&pdev->dev,
2437                        "platform_get_resource IORESOURCE_IRQ error.\n");
2438                goto clean_up;
2439        }
2440
2441        irq = ires->start;
2442        irq_trigger = ires->flags & IRQF_TRIGGER_MASK;
2443
2444        reg = ioremap(res->start, resource_size(res));
2445        if (reg == NULL) {
2446                ret = -ENOMEM;
2447                dev_err(&pdev->dev, "ioremap error.\n");
2448                goto clean_up;
2449        }
2450
2451        if (pdev->dev.platform_data == NULL) {
2452                dev_err(&pdev->dev, "no platform data\n");
2453                ret = -ENODEV;
2454                goto clean_up;
2455        }
2456
2457        /* initialize hcd */
2458        hcd = usb_create_hcd(&r8a66597_hc_driver, &pdev->dev, (char *)hcd_name);
2459        if (!hcd) {
2460                ret = -ENOMEM;
2461                dev_err(&pdev->dev, "Failed to create hcd\n");
2462                goto clean_up;
2463        }
2464        r8a66597 = hcd_to_r8a66597(hcd);
2465        memset(r8a66597, 0, sizeof(struct r8a66597));
2466        platform_set_drvdata(pdev, r8a66597);
2467        r8a66597->pdata = dev_get_platdata(&pdev->dev);
2468        r8a66597->irq_sense_low = irq_trigger == IRQF_TRIGGER_LOW;
2469
2470        if (r8a66597->pdata->on_chip) {
2471                snprintf(clk_name, sizeof(clk_name), "usb%d", pdev->id);
2472                r8a66597->clk = clk_get(&pdev->dev, clk_name);
2473                if (IS_ERR(r8a66597->clk)) {
2474                        dev_err(&pdev->dev, "cannot get clock \"%s\"\n",
2475                                clk_name);
2476                        ret = PTR_ERR(r8a66597->clk);
2477                        goto clean_up2;
2478                }
2479                r8a66597->max_root_hub = 1;
2480        } else
2481                r8a66597->max_root_hub = 2;
2482
2483        spin_lock_init(&r8a66597->lock);
2484        setup_timer(&r8a66597->rh_timer, r8a66597_timer,
2485                    (unsigned long)r8a66597);
2486        r8a66597->reg = reg;
2487
2488        /* make sure no interrupts are pending */
2489        ret = r8a66597_clock_enable(r8a66597);
2490        if (ret < 0)
2491                goto clean_up3;
2492        disable_controller(r8a66597);
2493
2494        for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) {
2495                INIT_LIST_HEAD(&r8a66597->pipe_queue[i]);
2496                setup_timer(&r8a66597->td_timer[i], r8a66597_td_timer,
2497                            (unsigned long)r8a66597);
2498                setup_timer(&r8a66597->interval_timer[i],
2499                                r8a66597_interval_timer,
2500                                (unsigned long)r8a66597);
2501        }
2502        INIT_LIST_HEAD(&r8a66597->child_device);
2503
2504        hcd->rsrc_start = res->start;
2505        hcd->has_tt = 1;
2506
2507        ret = usb_add_hcd(hcd, irq, irq_trigger);
2508        if (ret != 0) {
2509                dev_err(&pdev->dev, "Failed to add hcd\n");
2510                goto clean_up3;
2511        }
2512        device_wakeup_enable(hcd->self.controller);
2513
2514        return 0;
2515
2516clean_up3:
2517        if (r8a66597->pdata->on_chip)
2518                clk_put(r8a66597->clk);
2519clean_up2:
2520        usb_put_hcd(hcd);
2521
2522clean_up:
2523        if (reg)
2524                iounmap(reg);
2525
2526        return ret;
2527}
2528
2529static struct platform_driver r8a66597_driver = {
2530        .probe =        r8a66597_probe,
2531        .remove =       r8a66597_remove,
2532        .driver         = {
2533                .name = hcd_name,
2534                .pm     = R8A66597_DEV_PM_OPS,
2535        },
2536};
2537
2538module_platform_driver(r8a66597_driver);
2539