drivers/usb/host/r8a66597-hcd.c

   1 /*
   2  * R8A66597 HCD (Host Controller Driver) for u-boot
   3  *
   4  * Copyright (C) 2008  Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
   5  *
   6  * SPDX-License-Identifier:     GPL-2.0
   7  */
   8
   9 #include <common.h>
  10 #include <console.h>
  11 #include <usb.h>
  12 #include <asm/io.h>
  13
  14 #include "r8a66597.h"
  15
  16 #ifdef R8A66597_DEBUG
  17 #define R8A66597_DPRINT         printf
  18 #else
  19 #define R8A66597_DPRINT(...)
  20 #endif
  21
  22 static const char hcd_name[] = "r8a66597_hcd";
  23 static struct r8a66597 gr8a66597;
  24
  25 static void get_hub_data(struct usb_device *dev, u16 *hub_devnum, u16 *hubport)
  26 {
  27         int i;
  28
  29         *hub_devnum = 0;
  30         *hubport = 0;
  31
  32         /* check a device connected to root_hub */
  33         if ((dev->parent && dev->parent->devnum == 1) ||
  34             (dev->devnum == 1))
  35                 return;
  36
  37         for (i = 0; i < USB_MAXCHILDREN; i++) {
  38                 if (dev->parent->children[i] == dev) {
  39                         *hub_devnum = (u8)dev->parent->devnum;
  40                         *hubport = i;
  41                         return;
  42                 }
  43         }
  44
  45         printf("get_hub_data error.\n");
  46 }
  47
  48 static void set_devadd(struct r8a66597 *r8a66597, u8 r8a66597_address,
  49                         struct usb_device *dev, int port)
  50 {
  51         u16 val, usbspd, upphub, hubport;
  52         unsigned long devadd_reg = get_devadd_addr(r8a66597_address);
  53
  54         get_hub_data(dev, &upphub, &hubport);
  55         usbspd = r8a66597->speed;
  56         val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001);
  57         r8a66597_write(r8a66597, val, devadd_reg);
  58 }
  59
  60 static int r8a66597_clock_enable(struct r8a66597 *r8a66597)
  61 {
  62         u16 tmp;
  63         int i = 0;
  64
  65 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
  66         do {
  67                 r8a66597_write(r8a66597, SCKE, SYSCFG0);
  68                 tmp = r8a66597_read(r8a66597, SYSCFG0);
  69                 if (i++ > 1000) {
  70                         printf("register access fail.\n");
  71                         return -1;
  72                 }
  73         } while ((tmp & SCKE) != SCKE);
  74         r8a66597_write(r8a66597, 0x04, 0x02);
  75 #else
  76         do {
  77                 r8a66597_write(r8a66597, USBE, SYSCFG0);
  78                 tmp = r8a66597_read(r8a66597, SYSCFG0);
  79                 if (i++ > 1000) {
  80                         printf("register access fail.\n");
  81                         return -1;
  82                 }
  83         } while ((tmp & USBE) != USBE);
  84         r8a66597_bclr(r8a66597, USBE, SYSCFG0);
  85         r8a66597_mdfy(r8a66597, CONFIG_R8A66597_XTAL, XTAL, SYSCFG0);
  86
  87         i = 0;
  88         r8a66597_bset(r8a66597, XCKE, SYSCFG0);
  89         do {
  90                 udelay(1000);
  91                 tmp = r8a66597_read(r8a66597, SYSCFG0);
  92                 if (i++ > 500) {
  93                         printf("register access fail.\n");
  94                         return -1;
  95                 }
  96         } while ((tmp & SCKE) != SCKE);
  97 #endif  /* #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) */
  98
  99         return 0;
 100 }
 101
 102 static void r8a66597_clock_disable(struct r8a66597 *r8a66597)
 103 {
 104         r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
 105         udelay(1);
 106 #if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
 107         r8a66597_bclr(r8a66597, PLLC, SYSCFG0);
 108         r8a66597_bclr(r8a66597, XCKE, SYSCFG0);
 109         r8a66597_bclr(r8a66597, USBE, SYSCFG0);
 110 #endif
 111 }
 112
 113 static void r8a66597_enable_port(struct r8a66597 *r8a66597, int port)
 114 {
 115         u16 val;
 116
 117         val = port ? DRPD : DCFM | DRPD;
 118         r8a66597_bset(r8a66597, val, get_syscfg_reg(port));
 119         r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port));
 120
 121         r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, get_dmacfg_reg(port));
 122 }
 123
 124 static void r8a66597_disable_port(struct r8a66597 *r8a66597, int port)
 125 {
 126         u16 val, tmp;
 127
 128         r8a66597_write(r8a66597, 0, get_intenb_reg(port));
 129         r8a66597_write(r8a66597, 0, get_intsts_reg(port));
 130
 131         r8a66597_port_power(r8a66597, port, 0);
 132
 133         do {
 134                 tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS;
 135                 udelay(640);
 136         } while (tmp == EDGESTS);
 137
 138         val = port ? DRPD : DCFM | DRPD;
 139         r8a66597_bclr(r8a66597, val, get_syscfg_reg(port));
 140         r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port));
 141 }
 142
 143 static int enable_controller(struct r8a66597 *r8a66597)
 144 {
 145         int ret, port;
 146
 147         ret = r8a66597_clock_enable(r8a66597);
 148         if (ret < 0)
 149                 return ret;
 150
 151         r8a66597_bset(r8a66597, CONFIG_R8A66597_LDRV & LDRV, PINCFG);
 152         r8a66597_bset(r8a66597, USBE, SYSCFG0);
 153
 154         r8a66597_bset(r8a66597, INTL, SOFCFG);
 155         r8a66597_write(r8a66597, 0, INTENB0);
 156         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
 157                 r8a66597_write(r8a66597, 0, get_intenb_reg(port));
 158
 159         r8a66597_bset(r8a66597, CONFIG_R8A66597_ENDIAN & BIGEND, CFIFOSEL);
 160         r8a66597_bset(r8a66597, CONFIG_R8A66597_ENDIAN & BIGEND, D0FIFOSEL);
 161         r8a66597_bset(r8a66597, CONFIG_R8A66597_ENDIAN & BIGEND, D1FIFOSEL);
 162         r8a66597_bset(r8a66597, TRNENSEL, SOFCFG);
 163
 164         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
 165                 r8a66597_enable_port(r8a66597, port);
 166
 167         return 0;
 168 }
 169
 170 static void disable_controller(struct r8a66597 *r8a66597)
 171 {
 172         int i;
 173
 174         if (!(r8a66597_read(r8a66597, SYSCFG0) & USBE))
 175                 return;
 176
 177         r8a66597_write(r8a66597, 0, INTENB0);
 178         r8a66597_write(r8a66597, 0, INTSTS0);
 179
 180         r8a66597_write(r8a66597, 0, D0FIFOSEL);
 181         r8a66597_write(r8a66597, 0, D1FIFOSEL);
 182         r8a66597_write(r8a66597, 0, DCPCFG);
 183         r8a66597_write(r8a66597, 0x40, DCPMAXP);
 184         r8a66597_write(r8a66597, 0, DCPCTR);
 185
 186         for (i = 0; i <= 10; i++)
 187                 r8a66597_write(r8a66597, 0, get_devadd_addr(i));
 188         for (i = 1; i <= 5; i++) {
 189                 r8a66597_write(r8a66597, 0, get_pipetre_addr(i));
 190                 r8a66597_write(r8a66597, 0, get_pipetrn_addr(i));
 191         }
 192         for (i = 1; i < R8A66597_MAX_NUM_PIPE; i++) {
 193                 r8a66597_write(r8a66597, 0, get_pipectr_addr(i));
 194                 r8a66597_write(r8a66597, i, PIPESEL);
 195                 r8a66597_write(r8a66597, 0, PIPECFG);
 196                 r8a66597_write(r8a66597, 0, PIPEBUF);
 197                 r8a66597_write(r8a66597, 0, PIPEMAXP);
 198                 r8a66597_write(r8a66597, 0, PIPEPERI);
 199         }
 200
 201         for (i = 0; i < R8A66597_MAX_ROOT_HUB; i++)
 202                 r8a66597_disable_port(r8a66597, i);
 203
 204         r8a66597_clock_disable(r8a66597);
 205 }
 206
 207 static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg,
 208                               u16 mask, u16 loop)
 209 {
 210         u16 tmp;
 211         int i = 0;
 212
 213         do {
 214                 tmp = r8a66597_read(r8a66597, reg);
 215                 if (i++ > 1000000) {
 216                         printf("register%lx, loop %x is timeout\n", reg, loop);
 217                         break;
 218                 }
 219         } while ((tmp & mask) != loop);
 220 }
 221
 222 static void pipe_buffer_setting(struct r8a66597 *r8a66597,
 223                                 struct usb_device *dev, unsigned long pipe)
 224 {
 225         u16 val = 0;
 226         u16 pipenum, bufnum, maxpacket;
 227
 228         if (usb_pipein(pipe)) {
 229                 pipenum = BULK_IN_PIPENUM;
 230                 bufnum = BULK_IN_BUFNUM;
 231                 maxpacket = dev->epmaxpacketin[usb_pipeendpoint(pipe)];
 232         } else {
 233                 pipenum = BULK_OUT_PIPENUM;
 234                 bufnum = BULK_OUT_BUFNUM;
 235                 maxpacket = dev->epmaxpacketout[usb_pipeendpoint(pipe)];
 236         }
 237
 238         if (r8a66597->pipe_config & (1 << pipenum))
 239                 return;
 240         r8a66597->pipe_config |= (1 << pipenum);
 241
 242         r8a66597_bset(r8a66597, ACLRM, get_pipectr_addr(pipenum));
 243         r8a66597_bclr(r8a66597, ACLRM, get_pipectr_addr(pipenum));
 244         r8a66597_write(r8a66597, pipenum, PIPESEL);
 245
 246         /* FIXME: This driver support bulk transfer only. */
 247         if (!usb_pipein(pipe))
 248                 val |= R8A66597_DIR;
 249         else
 250                 val |= R8A66597_SHTNAK;
 251         val |= R8A66597_BULK | R8A66597_DBLB | usb_pipeendpoint(pipe);
 252         r8a66597_write(r8a66597, val, PIPECFG);
 253
 254         r8a66597_write(r8a66597, (8 << 10) | bufnum, PIPEBUF);
 255         r8a66597_write(r8a66597, make_devsel(usb_pipedevice(pipe)) |
 256                                  maxpacket, PIPEMAXP);
 257         r8a66597_write(r8a66597, 0, PIPEPERI);
 258         r8a66597_write(r8a66597, SQCLR, get_pipectr_addr(pipenum));
 259 }
 260
 261 static int send_setup_packet(struct r8a66597 *r8a66597, struct usb_device *dev,
 262                              struct devrequest *setup)
 263 {
 264         int i;
 265         unsigned short *p = (unsigned short *)setup;
 266         unsigned long setup_addr = USBREQ;
 267         u16 intsts1;
 268         int timeout = 3000;
 269         u16 devsel = setup->request == USB_REQ_SET_ADDRESS ? 0 : dev->devnum;
 270
 271         r8a66597_write(r8a66597, make_devsel(devsel) |
 272                                  (8 << dev->maxpacketsize), DCPMAXP);
 273         r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1);
 274
 275         for (i = 0; i < 4; i++) {
 276                 r8a66597_write(r8a66597, le16_to_cpu(p[i]), setup_addr);
 277                 setup_addr += 2;
 278         }
 279         r8a66597_write(r8a66597, ~0x0001, BRDYSTS);
 280         r8a66597_write(r8a66597, SUREQ, DCPCTR);
 281
 282         while (1) {
 283                 intsts1 = r8a66597_read(r8a66597, INTSTS1);
 284                 if (intsts1 & SACK)
 285                         break;
 286                 if (intsts1 & SIGN) {
 287                         printf("setup packet send error\n");
 288                         return -1;
 289                 }
 290                 if (timeout-- < 0) {
 291                         printf("setup packet timeout\n");
 292                         return -1;
 293                 }
 294                 udelay(500);
 295         }
 296
 297         return 0;
 298 }
 299
 300 static int send_bulk_packet(struct r8a66597 *r8a66597, struct usb_device *dev,
 301                             unsigned long pipe, void *buffer, int transfer_len)
 302 {
 303         u16 tmp, bufsize;
 304         u16 *buf;
 305         size_t size;
 306
 307         R8A66597_DPRINT("%s\n", __func__);
 308
 309         r8a66597_mdfy(r8a66597, MBW | BULK_OUT_PIPENUM,
 310                         MBW | CURPIPE, CFIFOSEL);
 311         r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, BULK_OUT_PIPENUM);
 312         tmp = r8a66597_read(r8a66597, CFIFOCTR);
 313         if ((tmp & FRDY) == 0) {
 314                 printf("%s FRDY is not set (%x)\n", __func__, tmp);
 315                 return -1;
 316         }
 317
 318         /* prepare parameters */
 319         bufsize = dev->epmaxpacketout[usb_pipeendpoint(pipe)];
 320         buf = (u16 *)(buffer + dev->act_len);
 321         size = min((int)bufsize, transfer_len - dev->act_len);
 322
 323         /* write fifo */
 324         r8a66597_write(r8a66597, ~(1 << BULK_OUT_PIPENUM), BEMPSTS);
 325         if (buffer) {
 326                 r8a66597_write_fifo(r8a66597, CFIFO, buf, size);
 327                 r8a66597_write(r8a66597, BVAL, CFIFOCTR);
 328         }
 329
 330         /* update parameters */
 331         dev->act_len += size;
 332
 333         r8a66597_mdfy(r8a66597, PID_BUF, PID,
 334                         get_pipectr_addr(BULK_OUT_PIPENUM));
 335
 336         while (!(r8a66597_read(r8a66597, BEMPSTS) & (1 << BULK_OUT_PIPENUM)))
 337                 if (ctrlc())
 338                         return -1;
 339         r8a66597_write(r8a66597, ~(1 << BULK_OUT_PIPENUM), BEMPSTS);
 340
 341         if (dev->act_len >= transfer_len)
 342                 r8a66597_mdfy(r8a66597, PID_NAK, PID,
 343                                 get_pipectr_addr(BULK_OUT_PIPENUM));
 344
 345         return 0;
 346 }
 347
 348 static int receive_bulk_packet(struct r8a66597 *r8a66597,
 349                                struct usb_device *dev,
 350                                unsigned long pipe,
 351                                void *buffer, int transfer_len)
 352 {
 353         u16 tmp;
 354         u16 *buf;
 355         const u16 pipenum = BULK_IN_PIPENUM;
 356         int rcv_len;
 357         int maxpacket = dev->epmaxpacketin[usb_pipeendpoint(pipe)];
 358
 359         R8A66597_DPRINT("%s\n", __func__);
 360
 361         /* prepare */
 362         if (dev->act_len == 0) {
 363                 r8a66597_mdfy(r8a66597, PID_NAK, PID,
 364                                 get_pipectr_addr(pipenum));
 365                 r8a66597_write(r8a66597, ~(1 << pipenum), BRDYSTS);
 366
 367                 r8a66597_write(r8a66597, TRCLR, get_pipetre_addr(pipenum));
 368                 r8a66597_write(r8a66597,
 369                                 (transfer_len + maxpacket - 1) / maxpacket,
 370                                 get_pipetrn_addr(pipenum));
 371                 r8a66597_bset(r8a66597, TRENB, get_pipetre_addr(pipenum));
 372
 373                 r8a66597_mdfy(r8a66597, PID_BUF, PID,
 374                                 get_pipectr_addr(pipenum));
 375         }
 376
 377         r8a66597_mdfy(r8a66597, MBW | pipenum, MBW | CURPIPE, CFIFOSEL);
 378         r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, pipenum);
 379
 380         while (!(r8a66597_read(r8a66597, BRDYSTS) & (1 << pipenum)))
 381                 if (ctrlc())
 382                         return -1;
 383         r8a66597_write(r8a66597, ~(1 << pipenum), BRDYSTS);
 384
 385         tmp = r8a66597_read(r8a66597, CFIFOCTR);
 386         if ((tmp & FRDY) == 0) {
 387                 printf("%s FRDY is not set. (%x)\n", __func__, tmp);
 388                 return -1;
 389         }
 390
 391         buf = (u16 *)(buffer + dev->act_len);
 392         rcv_len = tmp & DTLN;
 393         dev->act_len += rcv_len;
 394
 395         if (buffer) {
 396                 if (rcv_len == 0)
 397                         r8a66597_write(r8a66597, BCLR, CFIFOCTR);
 398                 else
 399                         r8a66597_read_fifo(r8a66597, CFIFO, buf, rcv_len);
 400         }
 401
 402         return 0;
 403 }
 404
 405 static int receive_control_packet(struct r8a66597 *r8a66597,
 406                                   struct usb_device *dev,
 407                                   void *buffer, int transfer_len)
 408 {
 409         u16 tmp;
 410         int rcv_len;
 411
 412         /* FIXME: limit transfer size : 64byte or less */
 413
 414         r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
 415         r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
 416         r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
 417         r8a66597_bset(r8a66597, SQSET, DCPCTR);
 418         r8a66597_write(r8a66597, BCLR, CFIFOCTR);
 419         r8a66597_mdfy(r8a66597, PID_BUF, PID, DCPCTR);
 420
 421         while (!(r8a66597_read(r8a66597, BRDYSTS) & 0x0001))
 422                 if (ctrlc())
 423                         return -1;
 424         r8a66597_write(r8a66597, ~0x0001, BRDYSTS);
 425
 426         r8a66597_mdfy(r8a66597, MBW, MBW | CURPIPE, CFIFOSEL);
 427         r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
 428
 429         tmp = r8a66597_read(r8a66597, CFIFOCTR);
 430         if ((tmp & FRDY) == 0) {
 431                 printf("%s FRDY is not set. (%x)\n", __func__, tmp);
 432                 return -1;
 433         }
 434
 435         rcv_len = tmp & DTLN;
 436         dev->act_len += rcv_len;
 437
 438         r8a66597_mdfy(r8a66597, PID_NAK, PID, DCPCTR);
 439
 440         if (buffer) {
 441                 if (rcv_len == 0)
 442                         r8a66597_write(r8a66597, BCLR, DCPCTR);
 443                 else
 444                         r8a66597_read_fifo(r8a66597, CFIFO, buffer, rcv_len);
 445         }
 446
 447         return 0;
 448 }
 449
 450 static int send_status_packet(struct r8a66597 *r8a66597,
 451                                unsigned long pipe)
 452 {
 453         r8a66597_bset(r8a66597, SQSET, DCPCTR);
 454         r8a66597_mdfy(r8a66597, PID_NAK, PID, DCPCTR);
 455
 456         if (usb_pipein(pipe)) {
 457                 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
 458                 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
 459                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
 460                 r8a66597_write(r8a66597, ~BEMP0, BEMPSTS);
 461                 r8a66597_write(r8a66597, BCLR | BVAL, CFIFOCTR);
 462         } else {
 463                 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
 464                 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
 465                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
 466                 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
 467         }
 468         r8a66597_mdfy(r8a66597, PID_BUF, PID, DCPCTR);
 469
 470         while (!(r8a66597_read(r8a66597, BEMPSTS) & 0x0001))
 471                 if (ctrlc())
 472                         return -1;
 473
 474         return 0;
 475 }
 476
 477 static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port)
 478 {
 479         int count = R8A66597_MAX_SAMPLING;
 480         unsigned short syssts, old_syssts;
 481
 482         R8A66597_DPRINT("%s\n", __func__);
 483
 484         old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port) & LNST);
 485         while (count > 0) {
 486                 mdelay(R8A66597_RH_POLL_TIME);
 487
 488                 syssts = r8a66597_read(r8a66597, get_syssts_reg(port) & LNST);
 489                 if (syssts == old_syssts) {
 490                         count--;
 491                 } else {
 492                         count = R8A66597_MAX_SAMPLING;
 493                         old_syssts = syssts;
 494                 }
 495         }
 496 }
 497
 498 static void r8a66597_bus_reset(struct r8a66597 *r8a66597, int port)
 499 {
 500         mdelay(10);
 501         r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT, get_dvstctr_reg(port));
 502         mdelay(50);
 503         r8a66597_mdfy(r8a66597, UACT, USBRST | UACT, get_dvstctr_reg(port));
 504         mdelay(50);
 505 }
 506
 507 static int check_usb_device_connecting(struct r8a66597 *r8a66597)
 508 {
 509         int timeout = 10000;    /* 100usec * 10000 = 1sec */
 510         int i;
 511
 512         for (i = 0; i < 5; i++) {
 513                 /* check a usb cable connect */
 514                 while (!(r8a66597_read(r8a66597, INTSTS1) & ATTCH)) {
 515                         if (timeout-- < 0) {
 516                                 printf("%s timeout.\n", __func__);
 517                                 return -1;
 518                         }
 519                         udelay(100);
 520                 }
 521
 522                 /* check a data line */
 523                 r8a66597_check_syssts(r8a66597, 0);
 524
 525                 r8a66597_bus_reset(r8a66597, 0);
 526                 r8a66597->speed = get_rh_usb_speed(r8a66597, 0);
 527
 528                 if (!(r8a66597_read(r8a66597, INTSTS1) & DTCH)) {
 529                         r8a66597->port_change = USB_PORT_STAT_C_CONNECTION;
 530                         r8a66597->port_status = USB_PORT_STAT_CONNECTION |
 531                                                 USB_PORT_STAT_ENABLE;
 532                         return 0;       /* success */
 533                 }
 534
 535                 R8A66597_DPRINT("USB device has detached. retry = %d\n", i);
 536                 r8a66597_write(r8a66597, ~DTCH, INTSTS1);
 537         }
 538
 539         return -1;      /* fail */
 540 }
 541
 542 /*-------------------------------------------------------------------------*
 543  * Virtual Root Hub
 544  *-------------------------------------------------------------------------*/
 545
 546 #include <usbroothubdes.h>
 547
 548 static int r8a66597_submit_rh_msg(struct usb_device *dev, unsigned long pipe,
 549                         void *buffer, int transfer_len, struct devrequest *cmd)
 550 {
 551         struct r8a66597 *r8a66597 = &gr8a66597;
 552         int leni = transfer_len;
 553         int len = 0;
 554         int stat = 0;
 555         __u16 bmRType_bReq;
 556         __u16 wValue;
 557         __u16 wLength;
 558         unsigned char data[32];
 559
 560         R8A66597_DPRINT("%s\n", __func__);
 561
 562         if (usb_pipeint(pipe)) {
 563                 printf("Root-Hub submit IRQ: NOT implemented");
 564                 return 0;
 565         }
 566
 567         bmRType_bReq  = cmd->requesttype | (cmd->request << 8);
 568         wValue        = cpu_to_le16 (cmd->value);
 569         wLength       = cpu_to_le16 (cmd->length);
 570
 571         switch (bmRType_bReq) {
 572         case RH_GET_STATUS:
 573                 *(__u16 *)buffer = cpu_to_le16(1);
 574                 len = 2;
 575                 break;
 576         case RH_GET_STATUS | RH_INTERFACE:
 577                 *(__u16 *)buffer = cpu_to_le16(0);
 578                 len = 2;
 579                 break;
 580         case RH_GET_STATUS | RH_ENDPOINT:
 581                 *(__u16 *)buffer = cpu_to_le16(0);
 582                 len = 2;
 583                 break;
 584         case RH_GET_STATUS | RH_CLASS:
 585                 *(__u32 *)buffer = cpu_to_le32(0);
 586                 len = 4;
 587                 break;
 588         case RH_GET_STATUS | RH_OTHER | RH_CLASS:
 589                 *(__u32 *)buffer = cpu_to_le32(r8a66597->port_status |
 590                                                 (r8a66597->port_change << 16));
 591                 len = 4;
 592                 break;
 593         case RH_CLEAR_FEATURE | RH_ENDPOINT:
 594         case RH_CLEAR_FEATURE | RH_CLASS:
 595                 break;
 596
 597         case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS:
 598                 switch (wValue) {
 599                 case RH_C_PORT_CONNECTION:
 600                         r8a66597->port_change &= ~USB_PORT_STAT_C_CONNECTION;
 601                         break;
 602                 }
 603                 break;
 604
 605         case RH_SET_FEATURE | RH_OTHER | RH_CLASS:
 606                 switch (wValue) {
 607                 case (RH_PORT_SUSPEND):
 608                         break;
 609                 case (RH_PORT_RESET):
 610                         r8a66597_bus_reset(r8a66597, 0);
 611                         break;
 612                 case (RH_PORT_POWER):
 613                         break;
 614                 case (RH_PORT_ENABLE):
 615                         break;
 616                 }
 617                 break;
 618         case RH_SET_ADDRESS:
 619                 gr8a66597.rh_devnum = wValue;
 620                 break;
 621         case RH_GET_DESCRIPTOR:
 622                 switch ((wValue & 0xff00) >> 8) {
 623                 case (0x01): /* device descriptor */
 624                         len = min_t(unsigned int,
 625                                   leni,
 626                                   min_t(unsigned int,
 627                                       sizeof(root_hub_dev_des),
 628                                       wLength));
 629                         memcpy(buffer, root_hub_dev_des, len);
 630                         break;
 631                 case (0x02): /* configuration descriptor */
 632                         len = min_t(unsigned int,
 633                                   leni,
 634                                   min_t(unsigned int,
 635                                       sizeof(root_hub_config_des),
 636                                       wLength));
 637                         memcpy(buffer, root_hub_config_des, len);
 638                         break;
 639                 case (0x03): /* string descriptors */
 640                         if (wValue == 0x0300) {
 641                                 len = min_t(unsigned int,
 642                                           leni,
 643                                           min_t(unsigned int,
 644                                               sizeof(root_hub_str_index0),
 645                                               wLength));
 646                                 memcpy(buffer, root_hub_str_index0, len);
 647                         }
 648                         if (wValue == 0x0301) {
 649                                 len = min_t(unsigned int,
 650                                           leni,
 651                                           min_t(unsigned int,
 652                                               sizeof(root_hub_str_index1),
 653                                               wLength));
 654                                 memcpy(buffer, root_hub_str_index1, len);
 655                         }
 656                         break;
 657                 default:
 658                         stat = USB_ST_STALLED;
 659                 }
 660                 break;
 661
 662         case RH_GET_DESCRIPTOR | RH_CLASS:
 663         {
 664                 __u32 temp = 0x00000001;
 665
 666                 data[0] = 9;            /* min length; */
 667                 data[1] = 0x29;
 668                 data[2] = temp & RH_A_NDP;
 669                 data[3] = 0;
 670                 if (temp & RH_A_PSM)
 671                         data[3] |= 0x1;
 672                 if (temp & RH_A_NOCP)
 673                         data[3] |= 0x10;
 674                 else if (temp & RH_A_OCPM)
 675                         data[3] |= 0x8;
 676
 677                 /* corresponds to data[4-7] */
 678                 data[5] = (temp & RH_A_POTPGT) >> 24;
 679                 data[7] = temp & RH_B_DR;
 680                 if (data[2] < 7) {
 681                         data[8] = 0xff;
 682                 } else {
 683                         data[0] += 2;
 684                         data[8] = (temp & RH_B_DR) >> 8;
 685                         data[10] = data[9] = 0xff;
 686                 }
 687
 688                 len = min_t(unsigned int, leni,
 689                             min_t(unsigned int, data[0], wLength));
 690                 memcpy(buffer, data, len);
 691                 break;
 692         }
 693
 694         case RH_GET_CONFIGURATION:
 695                 *(__u8 *) buffer = 0x01;
 696                 len = 1;
 697                 break;
 698         case RH_SET_CONFIGURATION:
 699                 break;
 700         default:
 701                 R8A66597_DPRINT("unsupported root hub command");
 702                 stat = USB_ST_STALLED;
 703         }
 704
 705         mdelay(1);
 706
 707         len = min_t(int, len, leni);
 708
 709         dev->act_len = len;
 710         dev->status = stat;
 711
 712         return stat;
 713 }
 714
 715 int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
 716                     int transfer_len)
 717 {
 718         struct r8a66597 *r8a66597 = &gr8a66597;
 719         int ret = 0;
 720
 721         R8A66597_DPRINT("%s\n", __func__);
 722         R8A66597_DPRINT("pipe = %08x, buffer = %p, len = %d, devnum = %d\n",
 723                         pipe, buffer, transfer_len, dev->devnum);
 724
 725         set_devadd(r8a66597, dev->devnum, dev, 0);
 726
 727         pipe_buffer_setting(r8a66597, dev, pipe);
 728
 729         dev->act_len = 0;
 730         while (dev->act_len < transfer_len && ret == 0) {
 731                 if (ctrlc())
 732                         return -1;
 733
 734                 if (usb_pipein(pipe))
 735                         ret = receive_bulk_packet(r8a66597, dev, pipe, buffer,
 736                                                         transfer_len);
 737                 else
 738                         ret = send_bulk_packet(r8a66597, dev, pipe, buffer,
 739                                                         transfer_len);
 740         }
 741
 742         if (ret == 0)
 743                 dev->status = 0;
 744
 745         return ret;
 746 }
 747
 748 int submit_control_msg(struct usb_device *dev, unsigned long pipe,
 749                        void *buffer, int transfer_len, struct devrequest *setup)
 750 {
 751         struct r8a66597 *r8a66597 = &gr8a66597;
 752         u16 r8a66597_address = setup->request == USB_REQ_SET_ADDRESS ?
 753                                         0 : dev->devnum;
 754
 755         R8A66597_DPRINT("%s\n", __func__);
 756         if (usb_pipedevice(pipe) == r8a66597->rh_devnum)
 757                 return r8a66597_submit_rh_msg(dev, pipe, buffer, transfer_len,
 758                                                 setup);
 759
 760         R8A66597_DPRINT("%s: setup\n", __func__);
 761         set_devadd(r8a66597, r8a66597_address, dev, 0);
 762
 763         if (send_setup_packet(r8a66597, dev, setup) < 0) {
 764                 printf("setup packet send error\n");
 765                 return -1;
 766         }
 767
 768         dev->act_len = 0;
 769         if (usb_pipein(pipe))
 770                 if (receive_control_packet(r8a66597, dev, buffer,
 771                                                 transfer_len) < 0)
 772                         return -1;
 773
 774         if (send_status_packet(r8a66597, pipe) < 0)
 775                 return -1;
 776
 777         dev->status = 0;
 778
 779         return 0;
 780 }
 781
 782 int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
 783                         int transfer_len, int interval)
 784 {
 785         /* no implement */
 786         R8A66597_DPRINT("%s\n", __func__);
 787         return 0;
 788 }
 789
 790 int usb_lowlevel_init(int index, enum usb_init_type init, void **controller)
 791 {
 792         struct r8a66597 *r8a66597 = &gr8a66597;
 793
 794         R8A66597_DPRINT("%s\n", __func__);
 795
 796         memset(r8a66597, 0, sizeof(*r8a66597));
 797         r8a66597->reg = CONFIG_R8A66597_BASE_ADDR;
 798
 799         disable_controller(r8a66597);
 800         mdelay(100);
 801
 802         enable_controller(r8a66597);
 803         r8a66597_port_power(r8a66597, 0 , 1);
 804
 805         /* check usb device */
 806         check_usb_device_connecting(r8a66597);
 807
 808         mdelay(50);
 809
 810         return 0;
 811 }
 812
 813 int usb_lowlevel_stop(int index)
 814 {
 815         disable_controller(&gr8a66597);
 816
 817         return 0;
 818 }