git.oblomov.eu Git - linux-2.6/blob - drivers/memstick/host/tifm_ms.c

   1 /*
   2  *  TI FlashMedia driver
   3  *
   4  *  Copyright (C) 2007 Alex Dubov <oakad@yahoo.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  *
  10  * Special thanks to Carlos Corbacho for providing various MemoryStick cards
  11  * that made this driver possible.
  12  *
  13  */
  14
  15 #include <linux/tifm.h>
  16 #include <linux/memstick.h>
  17 #include <linux/highmem.h>
  18 #include <linux/scatterlist.h>
  19 #include <linux/log2.h>
  20 #include <asm/io.h>
  21
  22 #define DRIVER_NAME "tifm_ms"
  23
  24 static int no_dma;
  25 module_param(no_dma, bool, 0644);
  26
  27 /*
  28  * Some control bits of TIFM appear to conform to Sony's reference design,
  29  * so I'm just assuming they all are.
  30  */
  31
  32 #define TIFM_MS_STAT_DRQ     0x04000
  33 #define TIFM_MS_STAT_MSINT   0x02000
  34 #define TIFM_MS_STAT_RDY     0x01000
  35 #define TIFM_MS_STAT_CRC     0x00200
  36 #define TIFM_MS_STAT_TOE     0x00100
  37 #define TIFM_MS_STAT_EMP     0x00020
  38 #define TIFM_MS_STAT_FUL     0x00010
  39 #define TIFM_MS_STAT_CED     0x00008
  40 #define TIFM_MS_STAT_ERR     0x00004
  41 #define TIFM_MS_STAT_BRQ     0x00002
  42 #define TIFM_MS_STAT_CNK     0x00001
  43
  44 #define TIFM_MS_SYS_DMA      0x10000
  45 #define TIFM_MS_SYS_RESET    0x08000
  46 #define TIFM_MS_SYS_SRAC     0x04000
  47 #define TIFM_MS_SYS_INTEN    0x02000
  48 #define TIFM_MS_SYS_NOCRC    0x01000
  49 #define TIFM_MS_SYS_INTCLR   0x00800
  50 #define TIFM_MS_SYS_MSIEN    0x00400
  51 #define TIFM_MS_SYS_FCLR     0x00200
  52 #define TIFM_MS_SYS_FDIR     0x00100
  53 #define TIFM_MS_SYS_DAM      0x00080
  54 #define TIFM_MS_SYS_DRM      0x00040
  55 #define TIFM_MS_SYS_DRQSL    0x00020
  56 #define TIFM_MS_SYS_REI      0x00010
  57 #define TIFM_MS_SYS_REO      0x00008
  58 #define TIFM_MS_SYS_BSY_MASK 0x00007
  59
  60 #define TIFM_MS_SYS_FIFO     (TIFM_MS_SYS_INTEN | TIFM_MS_SYS_MSIEN \
  61                               | TIFM_MS_SYS_FCLR | TIFM_MS_SYS_BSY_MASK)
  62
  63 /* Hardware flags */
  64 enum {
  65         CMD_READY  = 0x01,
  66         FIFO_READY = 0x02,
  67         CARD_INT   = 0x04
  68 };
  69
  70 struct tifm_ms {
  71         struct tifm_dev         *dev;
  72         struct timer_list       timer;
  73         struct memstick_request *req;
  74         unsigned int            mode_mask;
  75         unsigned int            block_pos;
  76         unsigned long           timeout_jiffies;
  77         unsigned char           eject:1,
  78                                 use_dma:1;
  79         unsigned char           cmd_flags;
  80         unsigned char           io_pos;
  81         unsigned int            io_word;
  82 };
  83
  84 static unsigned int tifm_ms_read_data(struct tifm_ms *host,
  85                                       unsigned char *buf, unsigned int length)
  86 {
  87         struct tifm_dev *sock = host->dev;
  88         unsigned int off = 0;
  89
  90         while (host->io_pos && length) {
  91                 buf[off++] = host->io_word & 0xff;
  92                 host->io_word >>= 8;
  93                 length--;
  94                 host->io_pos--;
  95         }
  96
  97         if (!length)
  98                 return off;
  99
 100         while (!(TIFM_MS_STAT_EMP & readl(sock->addr + SOCK_MS_STATUS))) {
 101                 if (length < 4)
 102                         break;
 103                 *(unsigned int *)(buf + off) = __raw_readl(sock->addr
 104                                                            + SOCK_MS_DATA);
 105                 length -= 4;
 106                 off += 4;
 107         }
 108
 109         if (length
 110             && !(TIFM_MS_STAT_EMP & readl(sock->addr + SOCK_MS_STATUS))) {
 111                 host->io_word = readl(sock->addr + SOCK_MS_DATA);
 112                 for (host->io_pos = 4; host->io_pos; --host->io_pos) {
 113                         buf[off++] = host->io_word & 0xff;
 114                         host->io_word >>= 8;
 115                         length--;
 116                         if (!length)
 117                                 break;
 118                 }
 119         }
 120
 121         return off;
 122 }
 123
 124 static unsigned int tifm_ms_write_data(struct tifm_ms *host,
 125                                        unsigned char *buf, unsigned int length)
 126 {
 127         struct tifm_dev *sock = host->dev;
 128         unsigned int off = 0;
 129
 130         if (host->io_pos) {
 131                 while (host->io_pos < 4 && length) {
 132                         host->io_word |=  buf[off++] << (host->io_pos * 8);
 133                         host->io_pos++;
 134                         length--;
 135                 }
 136         }
 137
 138         if (host->io_pos == 4
 139             && !(TIFM_MS_STAT_FUL & readl(sock->addr + SOCK_MS_STATUS))) {
 140                 writel(TIFM_MS_SYS_FDIR | readl(sock->addr + SOCK_MS_SYSTEM),
 141                        sock->addr + SOCK_MS_SYSTEM);
 142                 writel(host->io_word, sock->addr + SOCK_MS_DATA);
 143                 host->io_pos = 0;
 144                 host->io_word = 0;
 145         } else if (host->io_pos) {
 146                 return off;
 147         }
 148
 149         if (!length)
 150                 return off;
 151
 152         while (!(TIFM_MS_STAT_FUL & readl(sock->addr + SOCK_MS_STATUS))) {
 153                 if (length < 4)
 154                         break;
 155                 writel(TIFM_MS_SYS_FDIR | readl(sock->addr + SOCK_MS_SYSTEM),
 156                        sock->addr + SOCK_MS_SYSTEM);
 157                 __raw_writel(*(unsigned int *)(buf + off),
 158                              sock->addr + SOCK_MS_DATA);
 159                 length -= 4;
 160                 off += 4;
 161         }
 162
 163         switch (length) {
 164         case 3:
 165                 host->io_word |= buf[off + 2] << 16;
 166                 host->io_pos++;
 167         case 2:
 168                 host->io_word |= buf[off + 1] << 8;
 169                 host->io_pos++;
 170         case 1:
 171                 host->io_word |= buf[off];
 172                 host->io_pos++;
 173         }
 174
 175         off += host->io_pos;
 176
 177         return off;
 178 }
 179
 180 static unsigned int tifm_ms_transfer_data(struct tifm_ms *host)
 181 {
 182         struct tifm_dev *sock = host->dev;
 183         unsigned int length;
 184         unsigned int off;
 185         unsigned int t_size, p_cnt;
 186         unsigned char *buf;
 187         struct page *pg;
 188         unsigned long flags = 0;
 189
 190         if (host->req->long_data) {
 191                 length = host->req->sg.length - host->block_pos;
 192                 off = host->req->sg.offset + host->block_pos;
 193         } else {
 194                 length = host->req->data_len - host->block_pos;
 195                 off = 0;
 196         }
 197         dev_dbg(&sock->dev, "fifo data transfer, %d, %d\n", length,
 198                 host->block_pos);
 199
 200         while (length) {
 201                 unsigned int uninitialized_var(p_off);
 202
 203                 if (host->req->long_data) {
 204                         pg = nth_page(sg_page(&host->req->sg),
 205                                       off >> PAGE_SHIFT);
 206                         p_off = offset_in_page(off);
 207                         p_cnt = PAGE_SIZE - p_off;
 208                         p_cnt = min(p_cnt, length);
 209
 210                         local_irq_save(flags);
 211                         buf = kmap_atomic(pg, KM_BIO_SRC_IRQ) + p_off;
 212                 } else {
 213                         buf = host->req->data + host->block_pos;
 214                         p_cnt = host->req->data_len - host->block_pos;
 215                 }
 216
 217                 t_size = host->req->data_dir == WRITE
 218                          ? tifm_ms_write_data(host, buf, p_cnt)
 219                          : tifm_ms_read_data(host, buf, p_cnt);
 220
 221                 if (host->req->long_data) {
 222                         kunmap_atomic(buf - p_off, KM_BIO_SRC_IRQ);
 223                         local_irq_restore(flags);
 224                 }
 225
 226                 if (!t_size)
 227                         break;
 228                 host->block_pos += t_size;
 229                 length -= t_size;
 230                 off += t_size;
 231         }
 232
 233         dev_dbg(&sock->dev, "fifo data transfer, %d remaining\n", length);
 234         if (!length && (host->req->data_dir == WRITE)) {
 235                 if (host->io_pos) {
 236                         writel(TIFM_MS_SYS_FDIR
 237                                | readl(sock->addr + SOCK_MS_SYSTEM),
 238                                sock->addr + SOCK_MS_SYSTEM);
 239                         writel(host->io_word, sock->addr + SOCK_MS_DATA);
 240                 }
 241                 writel(TIFM_MS_SYS_FDIR
 242                        | readl(sock->addr + SOCK_MS_SYSTEM),
 243                        sock->addr + SOCK_MS_SYSTEM);
 244                 writel(0, sock->addr + SOCK_MS_DATA);
 245         } else {
 246                 readl(sock->addr + SOCK_MS_DATA);
 247         }
 248
 249         return length;
 250 }
 251
 252 static int tifm_ms_issue_cmd(struct tifm_ms *host)
 253 {
 254         struct tifm_dev *sock = host->dev;
 255         unsigned char *data;
 256         unsigned int data_len, cmd, sys_param;
 257
 258         host->cmd_flags = 0;
 259         host->block_pos = 0;
 260         host->io_pos = 0;
 261         host->io_word = 0;
 262         host->cmd_flags = 0;
 263
 264         data = host->req->data;
 265
 266         host->use_dma = !no_dma;
 267
 268         if (host->req->long_data) {
 269                 data_len = host->req->sg.length;
 270                 if (!is_power_of_2(data_len))
 271                         host->use_dma = 0;
 272         } else {
 273                 data_len = host->req->data_len;
 274                 host->use_dma = 0;
 275         }
 276
 277         writel(TIFM_FIFO_INT_SETALL,
 278                sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
 279         writel(TIFM_FIFO_ENABLE,
 280                sock->addr + SOCK_FIFO_CONTROL);
 281
 282         if (host->use_dma) {
 283                 if (1 != tifm_map_sg(sock, &host->req->sg, 1,
 284                                      host->req->data_dir == READ
 285                                      ? PCI_DMA_FROMDEVICE
 286                                      : PCI_DMA_TODEVICE)) {
 287                         host->req->error = -ENOMEM;
 288                         return host->req->error;
 289                 }
 290                 data_len = sg_dma_len(&host->req->sg);
 291
 292                 writel(ilog2(data_len) - 2,
 293                        sock->addr + SOCK_FIFO_PAGE_SIZE);
 294                 writel(TIFM_FIFO_INTMASK,
 295                        sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET);
 296                 sys_param = TIFM_DMA_EN | (1 << 8);
 297                 if (host->req->data_dir == WRITE)
 298                         sys_param |= TIFM_DMA_TX;
 299
 300                 writel(TIFM_FIFO_INTMASK,
 301                        sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET);
 302
 303                 writel(sg_dma_address(&host->req->sg),
 304                        sock->addr + SOCK_DMA_ADDRESS);
 305                 writel(sys_param, sock->addr + SOCK_DMA_CONTROL);
 306         } else {
 307                 writel(host->mode_mask | TIFM_MS_SYS_FIFO,
 308                        sock->addr + SOCK_MS_SYSTEM);
 309
 310                 writel(TIFM_FIFO_MORE,
 311                        sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET);
 312         }
 313
 314         mod_timer(&host->timer, jiffies + host->timeout_jiffies);
 315         writel(TIFM_CTRL_LED | readl(sock->addr + SOCK_CONTROL),
 316                sock->addr + SOCK_CONTROL);
 317         host->req->error = 0;
 318
 319         sys_param = readl(sock->addr + SOCK_MS_SYSTEM);
 320         sys_param |= TIFM_MS_SYS_INTCLR;
 321
 322         if (host->use_dma)
 323                 sys_param |= TIFM_MS_SYS_DMA;
 324         else
 325                 sys_param &= ~TIFM_MS_SYS_DMA;
 326
 327         writel(sys_param, sock->addr + SOCK_MS_SYSTEM);
 328
 329         cmd = (host->req->tpc & 0xf) << 12;
 330         cmd |= data_len;
 331         writel(cmd, sock->addr + SOCK_MS_COMMAND);
 332
 333         dev_dbg(&sock->dev, "executing TPC %x, %x\n", cmd, sys_param);
 334         return 0;
 335 }
 336
 337 static void tifm_ms_complete_cmd(struct tifm_ms *host)
 338 {
 339         struct tifm_dev *sock = host->dev;
 340         struct memstick_host *msh = tifm_get_drvdata(sock);
 341         int rc;
 342
 343         del_timer(&host->timer);
 344
 345         host->req->int_reg = readl(sock->addr + SOCK_MS_STATUS) & 0xff;
 346         host->req->int_reg = (host->req->int_reg & 1)
 347                              | ((host->req->int_reg << 4) & 0xe0);
 348
 349         writel(TIFM_FIFO_INT_SETALL,
 350                sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
 351         writel(TIFM_DMA_RESET, sock->addr + SOCK_DMA_CONTROL);
 352
 353         if (host->use_dma) {
 354                 tifm_unmap_sg(sock, &host->req->sg, 1,
 355                               host->req->data_dir == READ
 356                               ? PCI_DMA_FROMDEVICE
 357                               : PCI_DMA_TODEVICE);
 358         }
 359
 360         writel((~TIFM_CTRL_LED) & readl(sock->addr + SOCK_CONTROL),
 361                sock->addr + SOCK_CONTROL);
 362
 363         dev_dbg(&sock->dev, "TPC complete\n");
 364         do {
 365                 rc = memstick_next_req(msh, &host->req);
 366         } while (!rc && tifm_ms_issue_cmd(host));
 367 }
 368
 369 static int tifm_ms_check_status(struct tifm_ms *host)
 370 {
 371         if (!host->req->error) {
 372                 if (!(host->cmd_flags & CMD_READY))
 373                         return 1;
 374                 if (!(host->cmd_flags & FIFO_READY))
 375                         return 1;
 376                 if (host->req->need_card_int
 377                     && !(host->cmd_flags & CARD_INT))
 378                         return 1;
 379         }
 380         return 0;
 381 }
 382
 383 /* Called from interrupt handler */
 384 static void tifm_ms_data_event(struct tifm_dev *sock)
 385 {
 386         struct tifm_ms *host;
 387         unsigned int fifo_status = 0, host_status = 0;
 388         int rc = 1;
 389
 390         spin_lock(&sock->lock);
 391         host = memstick_priv((struct memstick_host *)tifm_get_drvdata(sock));
 392         fifo_status = readl(sock->addr + SOCK_DMA_FIFO_STATUS);
 393         host_status = readl(sock->addr + SOCK_MS_STATUS);
 394         dev_dbg(&sock->dev,
 395                 "data event: fifo_status %x, host_status %x, flags %x\n",
 396                 fifo_status, host_status, host->cmd_flags);
 397
 398         if (host->req) {
 399                 if (host->use_dma && (fifo_status & 1)) {
 400                         host->cmd_flags |= FIFO_READY;
 401                         rc = tifm_ms_check_status(host);
 402                 }
 403                 if (!host->use_dma && (fifo_status & TIFM_FIFO_MORE)) {
 404                         if (!tifm_ms_transfer_data(host)) {
 405                                 host->cmd_flags |= FIFO_READY;
 406                                 rc = tifm_ms_check_status(host);
 407                         }
 408                 }
 409         }
 410
 411         writel(fifo_status, sock->addr + SOCK_DMA_FIFO_STATUS);
 412         if (!rc)
 413                 tifm_ms_complete_cmd(host);
 414
 415         spin_unlock(&sock->lock);
 416 }
 417
 418
 419 /* Called from interrupt handler */
 420 static void tifm_ms_card_event(struct tifm_dev *sock)
 421 {
 422         struct tifm_ms *host;
 423         unsigned int host_status = 0;
 424         int rc = 1;
 425
 426         spin_lock(&sock->lock);
 427         host = memstick_priv((struct memstick_host *)tifm_get_drvdata(sock));
 428         host_status = readl(sock->addr + SOCK_MS_STATUS);
 429         dev_dbg(&sock->dev, "host event: host_status %x, flags %x\n",
 430                 host_status, host->cmd_flags);
 431
 432         if (host->req) {
 433                 if (host_status & TIFM_MS_STAT_TOE)
 434                         host->req->error = -ETIME;
 435                 else if (host_status & TIFM_MS_STAT_CRC)
 436                         host->req->error = -EILSEQ;
 437
 438                 if (host_status & TIFM_MS_STAT_RDY)
 439                         host->cmd_flags |= CMD_READY;
 440
 441                 if (host_status & TIFM_MS_STAT_MSINT)
 442                         host->cmd_flags |= CARD_INT;
 443
 444                 rc = tifm_ms_check_status(host);
 445
 446         }
 447
 448         writel(TIFM_MS_SYS_INTCLR | readl(sock->addr + SOCK_MS_SYSTEM),
 449                sock->addr + SOCK_MS_SYSTEM);
 450
 451         if (!rc)
 452                 tifm_ms_complete_cmd(host);
 453
 454         spin_unlock(&sock->lock);
 455         return;
 456 }
 457
 458 static void tifm_ms_request(struct memstick_host *msh)
 459 {
 460         struct tifm_ms *host = memstick_priv(msh);
 461         struct tifm_dev *sock = host->dev;
 462         unsigned long flags;
 463         int rc;
 464
 465         spin_lock_irqsave(&sock->lock, flags);
 466         if (host->req) {
 467                 printk(KERN_ERR "%s : unfinished request detected\n",
 468                        sock->dev.bus_id);
 469                 spin_unlock_irqrestore(&sock->lock, flags);
 470                 tifm_eject(host->dev);
 471                 return;
 472         }
 473
 474         if (host->eject) {
 475                 do {
 476                         rc = memstick_next_req(msh, &host->req);
 477                         if (!rc)
 478                                 host->req->error = -ETIME;
 479                 } while (!rc);
 480                 spin_unlock_irqrestore(&sock->lock, flags);
 481                 return;
 482         }
 483
 484         do {
 485                 rc = memstick_next_req(msh, &host->req);
 486         } while (!rc && tifm_ms_issue_cmd(host));
 487
 488         spin_unlock_irqrestore(&sock->lock, flags);
 489         return;
 490 }
 491
 492 static void tifm_ms_set_param(struct memstick_host *msh,
 493                               enum memstick_param param,
 494                               int value)
 495 {
 496         struct tifm_ms *host = memstick_priv(msh);
 497         struct tifm_dev *sock = host->dev;
 498         unsigned long flags;
 499
 500         spin_lock_irqsave(&sock->lock, flags);
 501
 502         switch (param) {
 503         case MEMSTICK_POWER:
 504                 /* also affected by media detection mechanism */
 505                 if (value == MEMSTICK_POWER_ON) {
 506                         host->mode_mask = TIFM_MS_SYS_SRAC | TIFM_MS_SYS_REI;
 507                         writel(TIFM_MS_SYS_RESET, sock->addr + SOCK_MS_SYSTEM);
 508                         writel(TIFM_MS_SYS_FCLR | TIFM_MS_SYS_INTCLR,
 509                                sock->addr + SOCK_MS_SYSTEM);
 510                         writel(0xffffffff, sock->addr + SOCK_MS_STATUS);
 511                 } else if (value == MEMSTICK_POWER_OFF) {
 512                         writel(TIFM_MS_SYS_FCLR | TIFM_MS_SYS_INTCLR,
 513                                sock->addr + SOCK_MS_SYSTEM);
 514                         writel(0xffffffff, sock->addr + SOCK_MS_STATUS);
 515                 }
 516                 break;
 517         case MEMSTICK_INTERFACE:
 518                 if (value == MEMSTICK_SERIAL) {
 519                         host->mode_mask = TIFM_MS_SYS_SRAC | TIFM_MS_SYS_REI;
 520                         writel((~TIFM_CTRL_FAST_CLK)
 521                                & readl(sock->addr + SOCK_CONTROL),
 522                                sock->addr + SOCK_CONTROL);
 523                 } else if (value == MEMSTICK_PAR4) {
 524                         host->mode_mask = 0;
 525                         writel(TIFM_CTRL_FAST_CLK
 526                                | readl(sock->addr + SOCK_CONTROL),
 527                                sock->addr + SOCK_CONTROL);
 528                 }
 529                 break;
 530         };
 531
 532         spin_unlock_irqrestore(&sock->lock, flags);
 533 }
 534
 535 static void tifm_ms_abort(unsigned long data)
 536 {
 537         struct tifm_ms *host = (struct tifm_ms *)data;
 538
 539         dev_dbg(&host->dev->dev, "status %x\n",
 540                 readl(host->dev->addr + SOCK_MS_STATUS));
 541         printk(KERN_ERR
 542                "%s : card failed to respond for a long period of time "
 543                "(%x, %x)\n",
 544                host->dev->dev.bus_id, host->req ? host->req->tpc : 0,
 545                host->cmd_flags);
 546
 547         tifm_eject(host->dev);
 548 }
 549
 550 static int tifm_ms_probe(struct tifm_dev *sock)
 551 {
 552         struct memstick_host *msh;
 553         struct tifm_ms *host;
 554         int rc = -EIO;
 555
 556         if (!(TIFM_SOCK_STATE_OCCUPIED
 557               & readl(sock->addr + SOCK_PRESENT_STATE))) {
 558                 printk(KERN_WARNING "%s : card gone, unexpectedly\n",
 559                        sock->dev.bus_id);
 560                 return rc;
 561         }
 562
 563         msh = memstick_alloc_host(sizeof(struct tifm_ms), &sock->dev);
 564         if (!msh)
 565                 return -ENOMEM;
 566
 567         host = memstick_priv(msh);
 568         tifm_set_drvdata(sock, msh);
 569         host->dev = sock;
 570         host->timeout_jiffies = msecs_to_jiffies(1000);
 571
 572         setup_timer(&host->timer, tifm_ms_abort, (unsigned long)host);
 573
 574         msh->request = tifm_ms_request;
 575         msh->set_param = tifm_ms_set_param;
 576         sock->card_event = tifm_ms_card_event;
 577         sock->data_event = tifm_ms_data_event;
 578         if (tifm_has_ms_pif(sock))
 579                 msh->caps |= MEMSTICK_CAP_PAR4;
 580
 581         rc = memstick_add_host(msh);
 582         if (!rc)
 583                 return 0;
 584
 585         memstick_free_host(msh);
 586         return rc;
 587 }
 588
 589 static void tifm_ms_remove(struct tifm_dev *sock)
 590 {
 591         struct memstick_host *msh = tifm_get_drvdata(sock);
 592         struct tifm_ms *host = memstick_priv(msh);
 593         int rc = 0;
 594         unsigned long flags;
 595
 596         spin_lock_irqsave(&sock->lock, flags);
 597         host->eject = 1;
 598         if (host->req) {
 599                 del_timer(&host->timer);
 600                 writel(TIFM_FIFO_INT_SETALL,
 601                        sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
 602                 writel(TIFM_DMA_RESET, sock->addr + SOCK_DMA_CONTROL);
 603                 if (host->use_dma)
 604                         tifm_unmap_sg(sock, &host->req->sg, 1,
 605                                       host->req->data_dir == READ
 606                                       ? PCI_DMA_TODEVICE
 607                                       : PCI_DMA_FROMDEVICE);
 608                 host->req->error = -ETIME;
 609
 610                 do {
 611                         rc = memstick_next_req(msh, &host->req);
 612                         if (!rc)
 613                                 host->req->error = -ETIME;
 614                 } while (!rc);
 615         }
 616         spin_unlock_irqrestore(&sock->lock, flags);
 617
 618         memstick_remove_host(msh);
 619         memstick_free_host(msh);
 620 }
 621
 622 #ifdef CONFIG_PM
 623
 624 static int tifm_ms_suspend(struct tifm_dev *sock, pm_message_t state)
 625 {
 626         struct memstick_host *msh = tifm_get_drvdata(sock);
 627
 628         memstick_suspend_host(msh);
 629         return 0;
 630 }
 631
 632 static int tifm_ms_resume(struct tifm_dev *sock)
 633 {
 634         struct memstick_host *msh = tifm_get_drvdata(sock);
 635
 636         memstick_resume_host(msh);
 637         return 0;
 638 }
 639
 640 #else
 641
 642 #define tifm_ms_suspend NULL
 643 #define tifm_ms_resume NULL
 644
 645 #endif /* CONFIG_PM */
 646
 647 static struct tifm_device_id tifm_ms_id_tbl[] = {
 648         { TIFM_TYPE_MS }, { 0 }
 649 };
 650
 651 static struct tifm_driver tifm_ms_driver = {
 652         .driver = {
 653                 .name  = DRIVER_NAME,
 654                 .owner = THIS_MODULE
 655         },
 656         .id_table = tifm_ms_id_tbl,
 657         .probe    = tifm_ms_probe,
 658         .remove   = tifm_ms_remove,
 659         .suspend  = tifm_ms_suspend,
 660         .resume   = tifm_ms_resume
 661 };
 662
 663 static int __init tifm_ms_init(void)
 664 {
 665         return tifm_register_driver(&tifm_ms_driver);
 666 }
 667
 668 static void __exit tifm_ms_exit(void)
 669 {
 670         tifm_unregister_driver(&tifm_ms_driver);
 671 }
 672
 673 MODULE_AUTHOR("Alex Dubov");
 674 MODULE_DESCRIPTION("TI FlashMedia MemoryStick driver");
 675 MODULE_LICENSE("GPL");
 676 MODULE_DEVICE_TABLE(tifm, tifm_ms_id_tbl);
 677
 678 module_init(tifm_ms_init);
 679 module_exit(tifm_ms_exit);