drivers/memstick/host/tifm_ms.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  *  TI FlashMedia driver
   4  *
   5  *  Copyright (C) 2007 Alex Dubov <oakad@yahoo.com>
   6  *
   7  * Special thanks to Carlos Corbacho for providing various MemoryStick cards
   8  * that made this driver possible.
   9  */
  10
  11 #include <linux/tifm.h>
  12 #include <linux/memstick.h>
  13 #include <linux/highmem.h>
  14 #include <linux/scatterlist.h>
  15 #include <linux/log2.h>
  16 #include <linux/module.h>
  17 #include <asm/io.h>
  18
  19 #define DRIVER_NAME "tifm_ms"
  20
  21 static bool no_dma;
  22 module_param(no_dma, bool, 0644);
  23
  24 /*
  25  * Some control bits of TIFM appear to conform to Sony's reference design,
  26  * so I'm just assuming they all are.
  27  */
  28
  29 #define TIFM_MS_STAT_DRQ     0x04000
  30 #define TIFM_MS_STAT_MSINT   0x02000
  31 #define TIFM_MS_STAT_RDY     0x01000
  32 #define TIFM_MS_STAT_CRC     0x00200
  33 #define TIFM_MS_STAT_TOE     0x00100
  34 #define TIFM_MS_STAT_EMP     0x00020
  35 #define TIFM_MS_STAT_FUL     0x00010
  36 #define TIFM_MS_STAT_CED     0x00008
  37 #define TIFM_MS_STAT_ERR     0x00004
  38 #define TIFM_MS_STAT_BRQ     0x00002
  39 #define TIFM_MS_STAT_CNK     0x00001
  40
  41 #define TIFM_MS_SYS_DMA      0x10000
  42 #define TIFM_MS_SYS_RESET    0x08000
  43 #define TIFM_MS_SYS_SRAC     0x04000
  44 #define TIFM_MS_SYS_INTEN    0x02000
  45 #define TIFM_MS_SYS_NOCRC    0x01000
  46 #define TIFM_MS_SYS_INTCLR   0x00800
  47 #define TIFM_MS_SYS_MSIEN    0x00400
  48 #define TIFM_MS_SYS_FCLR     0x00200
  49 #define TIFM_MS_SYS_FDIR     0x00100
  50 #define TIFM_MS_SYS_DAM      0x00080
  51 #define TIFM_MS_SYS_DRM      0x00040
  52 #define TIFM_MS_SYS_DRQSL    0x00020
  53 #define TIFM_MS_SYS_REI      0x00010
  54 #define TIFM_MS_SYS_REO      0x00008
  55 #define TIFM_MS_SYS_BSY_MASK 0x00007
  56
  57 #define TIFM_MS_SYS_FIFO     (TIFM_MS_SYS_INTEN | TIFM_MS_SYS_MSIEN \
  58                               | TIFM_MS_SYS_FCLR | TIFM_MS_SYS_BSY_MASK)
  59
  60 /* Hardware flags */
  61 enum {
  62         CMD_READY  = 0x01,
  63         FIFO_READY = 0x02,
  64         CARD_INT   = 0x04
  65 };
  66
  67 struct tifm_ms {
  68         struct tifm_dev         *dev;
  69         struct timer_list       timer;
  70         struct memstick_request *req;
  71         struct tasklet_struct   notify;
  72         unsigned int            mode_mask;
  73         unsigned int            block_pos;
  74         unsigned long           timeout_jiffies;
  75         unsigned char           eject:1,
  76                                 use_dma:1;
  77         unsigned char           cmd_flags;
  78         unsigned char           io_pos;
  79         unsigned int            io_word;
  80 };
  81
  82 static unsigned int tifm_ms_read_data(struct tifm_ms *host,
  83                                       unsigned char *buf, unsigned int length)
  84 {
  85         struct tifm_dev *sock = host->dev;
  86         unsigned int off = 0;
  87
  88         while (host->io_pos && length) {
  89                 buf[off++] = host->io_word & 0xff;
  90                 host->io_word >>= 8;
  91                 length--;
  92                 host->io_pos--;
  93         }
  94
  95         if (!length)
  96                 return off;
  97
  98         while (!(TIFM_MS_STAT_EMP & readl(sock->addr + SOCK_MS_STATUS))) {
  99                 if (length < 4)
 100                         break;
 101                 *(unsigned int *)(buf + off) = __raw_readl(sock->addr
 102                                                            + SOCK_MS_DATA);
 103                 length -= 4;
 104                 off += 4;
 105         }
 106
 107         if (length
 108             && !(TIFM_MS_STAT_EMP & readl(sock->addr + SOCK_MS_STATUS))) {
 109                 host->io_word = readl(sock->addr + SOCK_MS_DATA);
 110                 for (host->io_pos = 4; host->io_pos; --host->io_pos) {
 111                         buf[off++] = host->io_word & 0xff;
 112                         host->io_word >>= 8;
 113                         length--;
 114                         if (!length)
 115                                 break;
 116                 }
 117         }
 118
 119         return off;
 120 }
 121
 122 static unsigned int tifm_ms_write_data(struct tifm_ms *host,
 123                                        unsigned char *buf, unsigned int length)
 124 {
 125         struct tifm_dev *sock = host->dev;
 126         unsigned int off = 0;
 127
 128         if (host->io_pos) {
 129                 while (host->io_pos < 4 && length) {
 130                         host->io_word |=  buf[off++] << (host->io_pos * 8);
 131                         host->io_pos++;
 132                         length--;
 133                 }
 134         }
 135
 136         if (host->io_pos == 4
 137             && !(TIFM_MS_STAT_FUL & readl(sock->addr + SOCK_MS_STATUS))) {
 138                 writel(TIFM_MS_SYS_FDIR | readl(sock->addr + SOCK_MS_SYSTEM),
 139                        sock->addr + SOCK_MS_SYSTEM);
 140                 writel(host->io_word, sock->addr + SOCK_MS_DATA);
 141                 host->io_pos = 0;
 142                 host->io_word = 0;
 143         } else if (host->io_pos) {
 144                 return off;
 145         }
 146
 147         if (!length)
 148                 return off;
 149
 150         while (!(TIFM_MS_STAT_FUL & readl(sock->addr + SOCK_MS_STATUS))) {
 151                 if (length < 4)
 152                         break;
 153                 writel(TIFM_MS_SYS_FDIR | readl(sock->addr + SOCK_MS_SYSTEM),
 154                        sock->addr + SOCK_MS_SYSTEM);
 155                 __raw_writel(*(unsigned int *)(buf + off),
 156                              sock->addr + SOCK_MS_DATA);
 157                 length -= 4;
 158                 off += 4;
 159         }
 160
 161         switch (length) {
 162         case 3:
 163                 host->io_word |= buf[off + 2] << 16;
 164                 host->io_pos++;
 165                 /* fall through */
 166         case 2:
 167                 host->io_word |= buf[off + 1] << 8;
 168                 host->io_pos++;
 169                 /* fall through */
 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) + 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);
 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 int data_len, cmd, sys_param;
 256
 257         host->cmd_flags = 0;
 258         host->block_pos = 0;
 259         host->io_pos = 0;
 260         host->io_word = 0;
 261         host->cmd_flags = 0;
 262
 263         host->use_dma = !no_dma;
 264
 265         if (host->req->long_data) {
 266                 data_len = host->req->sg.length;
 267                 if (!is_power_of_2(data_len))
 268                         host->use_dma = 0;
 269         } else {
 270                 data_len = host->req->data_len;
 271                 host->use_dma = 0;
 272         }
 273
 274         writel(TIFM_FIFO_INT_SETALL,
 275                sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
 276         writel(TIFM_FIFO_ENABLE,
 277                sock->addr + SOCK_FIFO_CONTROL);
 278
 279         if (host->use_dma) {
 280                 if (1 != tifm_map_sg(sock, &host->req->sg, 1,
 281                                      host->req->data_dir == READ
 282                                      ? PCI_DMA_FROMDEVICE
 283                                      : PCI_DMA_TODEVICE)) {
 284                         host->req->error = -ENOMEM;
 285                         return host->req->error;
 286                 }
 287                 data_len = sg_dma_len(&host->req->sg);
 288
 289                 writel(ilog2(data_len) - 2,
 290                        sock->addr + SOCK_FIFO_PAGE_SIZE);
 291                 writel(TIFM_FIFO_INTMASK,
 292                        sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET);
 293                 sys_param = TIFM_DMA_EN | (1 << 8);
 294                 if (host->req->data_dir == WRITE)
 295                         sys_param |= TIFM_DMA_TX;
 296
 297                 writel(TIFM_FIFO_INTMASK,
 298                        sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET);
 299
 300                 writel(sg_dma_address(&host->req->sg),
 301                        sock->addr + SOCK_DMA_ADDRESS);
 302                 writel(sys_param, sock->addr + SOCK_DMA_CONTROL);
 303         } else {
 304                 writel(host->mode_mask | TIFM_MS_SYS_FIFO,
 305                        sock->addr + SOCK_MS_SYSTEM);
 306
 307                 writel(TIFM_FIFO_MORE,
 308                        sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET);
 309         }
 310
 311         mod_timer(&host->timer, jiffies + host->timeout_jiffies);
 312         writel(TIFM_CTRL_LED | readl(sock->addr + SOCK_CONTROL),
 313                sock->addr + SOCK_CONTROL);
 314         host->req->error = 0;
 315
 316         sys_param = readl(sock->addr + SOCK_MS_SYSTEM);
 317         sys_param |= TIFM_MS_SYS_INTCLR;
 318
 319         if (host->use_dma)
 320                 sys_param |= TIFM_MS_SYS_DMA;
 321         else
 322                 sys_param &= ~TIFM_MS_SYS_DMA;
 323
 324         writel(sys_param, sock->addr + SOCK_MS_SYSTEM);
 325
 326         cmd = (host->req->tpc & 0xf) << 12;
 327         cmd |= data_len;
 328         writel(cmd, sock->addr + SOCK_MS_COMMAND);
 329
 330         dev_dbg(&sock->dev, "executing TPC %x, %x\n", cmd, sys_param);
 331         return 0;
 332 }
 333
 334 static void tifm_ms_complete_cmd(struct tifm_ms *host)
 335 {
 336         struct tifm_dev *sock = host->dev;
 337         struct memstick_host *msh = tifm_get_drvdata(sock);
 338         int rc;
 339
 340         del_timer(&host->timer);
 341
 342         host->req->int_reg = readl(sock->addr + SOCK_MS_STATUS) & 0xff;
 343         host->req->int_reg = (host->req->int_reg & 1)
 344                              | ((host->req->int_reg << 4) & 0xe0);
 345
 346         writel(TIFM_FIFO_INT_SETALL,
 347                sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
 348         writel(TIFM_DMA_RESET, sock->addr + SOCK_DMA_CONTROL);
 349
 350         if (host->use_dma) {
 351                 tifm_unmap_sg(sock, &host->req->sg, 1,
 352                               host->req->data_dir == READ
 353                               ? PCI_DMA_FROMDEVICE
 354                               : PCI_DMA_TODEVICE);
 355         }
 356
 357         writel((~TIFM_CTRL_LED) & readl(sock->addr + SOCK_CONTROL),
 358                sock->addr + SOCK_CONTROL);
 359
 360         dev_dbg(&sock->dev, "TPC complete\n");
 361         do {
 362                 rc = memstick_next_req(msh, &host->req);
 363         } while (!rc && tifm_ms_issue_cmd(host));
 364 }
 365
 366 static int tifm_ms_check_status(struct tifm_ms *host)
 367 {
 368         if (!host->req->error) {
 369                 if (!(host->cmd_flags & CMD_READY))
 370                         return 1;
 371                 if (!(host->cmd_flags & FIFO_READY))
 372                         return 1;
 373                 if (host->req->need_card_int
 374                     && !(host->cmd_flags & CARD_INT))
 375                         return 1;
 376         }
 377         return 0;
 378 }
 379
 380 /* Called from interrupt handler */
 381 static void tifm_ms_data_event(struct tifm_dev *sock)
 382 {
 383         struct tifm_ms *host;
 384         unsigned int fifo_status = 0, host_status = 0;
 385         int rc = 1;
 386
 387         spin_lock(&sock->lock);
 388         host = memstick_priv((struct memstick_host *)tifm_get_drvdata(sock));
 389         fifo_status = readl(sock->addr + SOCK_DMA_FIFO_STATUS);
 390         host_status = readl(sock->addr + SOCK_MS_STATUS);
 391         dev_dbg(&sock->dev,
 392                 "data event: fifo_status %x, host_status %x, flags %x\n",
 393                 fifo_status, host_status, host->cmd_flags);
 394
 395         if (host->req) {
 396                 if (host->use_dma && (fifo_status & 1)) {
 397                         host->cmd_flags |= FIFO_READY;
 398                         rc = tifm_ms_check_status(host);
 399                 }
 400                 if (!host->use_dma && (fifo_status & TIFM_FIFO_MORE)) {
 401                         if (!tifm_ms_transfer_data(host)) {
 402                                 host->cmd_flags |= FIFO_READY;
 403                                 rc = tifm_ms_check_status(host);
 404                         }
 405                 }
 406         }
 407
 408         writel(fifo_status, sock->addr + SOCK_DMA_FIFO_STATUS);
 409         if (!rc)
 410                 tifm_ms_complete_cmd(host);
 411
 412         spin_unlock(&sock->lock);
 413 }
 414
 415
 416 /* Called from interrupt handler */
 417 static void tifm_ms_card_event(struct tifm_dev *sock)
 418 {
 419         struct tifm_ms *host;
 420         unsigned int host_status = 0;
 421         int rc = 1;
 422
 423         spin_lock(&sock->lock);
 424         host = memstick_priv((struct memstick_host *)tifm_get_drvdata(sock));
 425         host_status = readl(sock->addr + SOCK_MS_STATUS);
 426         dev_dbg(&sock->dev, "host event: host_status %x, flags %x\n",
 427                 host_status, host->cmd_flags);
 428
 429         if (host->req) {
 430                 if (host_status & TIFM_MS_STAT_TOE)
 431                         host->req->error = -ETIME;
 432                 else if (host_status & TIFM_MS_STAT_CRC)
 433                         host->req->error = -EILSEQ;
 434
 435                 if (host_status & TIFM_MS_STAT_RDY)
 436                         host->cmd_flags |= CMD_READY;
 437
 438                 if (host_status & TIFM_MS_STAT_MSINT)
 439                         host->cmd_flags |= CARD_INT;
 440
 441                 rc = tifm_ms_check_status(host);
 442
 443         }
 444
 445         writel(TIFM_MS_SYS_INTCLR | readl(sock->addr + SOCK_MS_SYSTEM),
 446                sock->addr + SOCK_MS_SYSTEM);
 447
 448         if (!rc)
 449                 tifm_ms_complete_cmd(host);
 450
 451         spin_unlock(&sock->lock);
 452         return;
 453 }
 454
 455 static void tifm_ms_req_tasklet(unsigned long data)
 456 {
 457         struct memstick_host *msh = (struct memstick_host *)data;
 458         struct tifm_ms *host = memstick_priv(msh);
 459         struct tifm_dev *sock = host->dev;
 460         unsigned long flags;
 461         int rc;
 462
 463         spin_lock_irqsave(&sock->lock, flags);
 464         if (!host->req) {
 465                 if (host->eject) {
 466                         do {
 467                                 rc = memstick_next_req(msh, &host->req);
 468                                 if (!rc)
 469                                         host->req->error = -ETIME;
 470                         } while (!rc);
 471                         spin_unlock_irqrestore(&sock->lock, flags);
 472                         return;
 473                 }
 474
 475                 do {
 476                         rc = memstick_next_req(msh, &host->req);
 477                 } while (!rc && tifm_ms_issue_cmd(host));
 478         }
 479         spin_unlock_irqrestore(&sock->lock, flags);
 480 }
 481
 482 static void tifm_ms_dummy_submit(struct memstick_host *msh)
 483 {
 484         return;
 485 }
 486
 487 static void tifm_ms_submit_req(struct memstick_host *msh)
 488 {
 489         struct tifm_ms *host = memstick_priv(msh);
 490
 491         tasklet_schedule(&host->notify);
 492 }
 493
 494 static int tifm_ms_set_param(struct memstick_host *msh,
 495                              enum memstick_param param,
 496                              int value)
 497 {
 498         struct tifm_ms *host = memstick_priv(msh);
 499         struct tifm_dev *sock = host->dev;
 500
 501         switch (param) {
 502         case MEMSTICK_POWER:
 503                 /* also affected by media detection mechanism */
 504                 if (value == MEMSTICK_POWER_ON) {
 505                         host->mode_mask = TIFM_MS_SYS_SRAC | TIFM_MS_SYS_REI;
 506                         writel(TIFM_MS_SYS_RESET, sock->addr + SOCK_MS_SYSTEM);
 507                         writel(TIFM_MS_SYS_FCLR | TIFM_MS_SYS_INTCLR,
 508                                sock->addr + SOCK_MS_SYSTEM);
 509                         writel(0xffffffff, sock->addr + SOCK_MS_STATUS);
 510                 } else if (value == MEMSTICK_POWER_OFF) {
 511                         writel(TIFM_MS_SYS_FCLR | TIFM_MS_SYS_INTCLR,
 512                                sock->addr + SOCK_MS_SYSTEM);
 513                         writel(0xffffffff, sock->addr + SOCK_MS_STATUS);
 514                 } else
 515                         return -EINVAL;
 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                 } else
 529                         return -EINVAL;
 530                 break;
 531         };
 532
 533         return 0;
 534 }
 535
 536 static void tifm_ms_abort(struct timer_list *t)
 537 {
 538         struct tifm_ms *host = from_timer(host, t, timer);
 539
 540         dev_dbg(&host->dev->dev, "status %x\n",
 541                 readl(host->dev->addr + SOCK_MS_STATUS));
 542         printk(KERN_ERR
 543                "%s : card failed to respond for a long period of time "
 544                "(%x, %x)\n",
 545                dev_name(&host->dev->dev), host->req ? host->req->tpc : 0,
 546                host->cmd_flags);
 547
 548         tifm_eject(host->dev);
 549 }
 550
 551 static int tifm_ms_probe(struct tifm_dev *sock)
 552 {
 553         struct memstick_host *msh;
 554         struct tifm_ms *host;
 555         int rc = -EIO;
 556
 557         if (!(TIFM_SOCK_STATE_OCCUPIED
 558               & readl(sock->addr + SOCK_PRESENT_STATE))) {
 559                 printk(KERN_WARNING "%s : card gone, unexpectedly\n",
 560                        dev_name(&sock->dev));
 561                 return rc;
 562         }
 563
 564         msh = memstick_alloc_host(sizeof(struct tifm_ms), &sock->dev);
 565         if (!msh)
 566                 return -ENOMEM;
 567
 568         host = memstick_priv(msh);
 569         tifm_set_drvdata(sock, msh);
 570         host->dev = sock;
 571         host->timeout_jiffies = msecs_to_jiffies(1000);
 572
 573         timer_setup(&host->timer, tifm_ms_abort, 0);
 574         tasklet_init(&host->notify, tifm_ms_req_tasklet, (unsigned long)msh);
 575
 576         msh->request = tifm_ms_submit_req;
 577         msh->set_param = tifm_ms_set_param;
 578         sock->card_event = tifm_ms_card_event;
 579         sock->data_event = tifm_ms_data_event;
 580         if (tifm_has_ms_pif(sock))
 581                 msh->caps |= MEMSTICK_CAP_PAR4;
 582
 583         rc = memstick_add_host(msh);
 584         if (!rc)
 585                 return 0;
 586
 587         memstick_free_host(msh);
 588         return rc;
 589 }
 590
 591 static void tifm_ms_remove(struct tifm_dev *sock)
 592 {
 593         struct memstick_host *msh = tifm_get_drvdata(sock);
 594         struct tifm_ms *host = memstick_priv(msh);
 595         int rc = 0;
 596         unsigned long flags;
 597
 598         msh->request = tifm_ms_dummy_submit;
 599         tasklet_kill(&host->notify);
 600         spin_lock_irqsave(&sock->lock, flags);
 601         host->eject = 1;
 602         if (host->req) {
 603                 del_timer(&host->timer);
 604                 writel(TIFM_FIFO_INT_SETALL,
 605                        sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
 606                 writel(TIFM_DMA_RESET, sock->addr + SOCK_DMA_CONTROL);
 607                 if (host->use_dma)
 608                         tifm_unmap_sg(sock, &host->req->sg, 1,
 609                                       host->req->data_dir == READ
 610                                       ? PCI_DMA_TODEVICE
 611                                       : PCI_DMA_FROMDEVICE);
 612                 host->req->error = -ETIME;
 613
 614                 do {
 615                         rc = memstick_next_req(msh, &host->req);
 616                         if (!rc)
 617                                 host->req->error = -ETIME;
 618                 } while (!rc);
 619         }
 620         spin_unlock_irqrestore(&sock->lock, flags);
 621
 622         memstick_remove_host(msh);
 623         memstick_free_host(msh);
 624 }
 625
 626 #ifdef CONFIG_PM
 627
 628 static int tifm_ms_suspend(struct tifm_dev *sock, pm_message_t state)
 629 {
 630         struct memstick_host *msh = tifm_get_drvdata(sock);
 631
 632         memstick_suspend_host(msh);
 633         return 0;
 634 }
 635
 636 static int tifm_ms_resume(struct tifm_dev *sock)
 637 {
 638         struct memstick_host *msh = tifm_get_drvdata(sock);
 639
 640         memstick_resume_host(msh);
 641         return 0;
 642 }
 643
 644 #else
 645
 646 #define tifm_ms_suspend NULL
 647 #define tifm_ms_resume NULL
 648
 649 #endif /* CONFIG_PM */
 650
 651 static struct tifm_device_id tifm_ms_id_tbl[] = {
 652         { TIFM_TYPE_MS }, { 0 }
 653 };
 654
 655 static struct tifm_driver tifm_ms_driver = {
 656         .driver = {
 657                 .name  = DRIVER_NAME,
 658                 .owner = THIS_MODULE
 659         },
 660         .id_table = tifm_ms_id_tbl,
 661         .probe    = tifm_ms_probe,
 662         .remove   = tifm_ms_remove,
 663         .suspend  = tifm_ms_suspend,
 664         .resume   = tifm_ms_resume
 665 };
 666
 667 static int __init tifm_ms_init(void)
 668 {
 669         return tifm_register_driver(&tifm_ms_driver);
 670 }
 671
 672 static void __exit tifm_ms_exit(void)
 673 {
 674         tifm_unregister_driver(&tifm_ms_driver);
 675 }
 676
 677 MODULE_AUTHOR("Alex Dubov");
 678 MODULE_DESCRIPTION("TI FlashMedia MemoryStick driver");
 679 MODULE_LICENSE("GPL");
 680 MODULE_DEVICE_TABLE(tifm, tifm_ms_id_tbl);
 681
 682 module_init(tifm_ms_init);
 683 module_exit(tifm_ms_exit);