drivers/net/wireless/brcm80211/brcmfmac/bcmsdh_sdmmc.c

   1 /*
   2  * Copyright (c) 2010 Broadcom Corporation
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  11  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
  13  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  14  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16 #include <linux/types.h>
  17 #include <linux/netdevice.h>
  18 #include <linux/mmc/sdio.h>
  19 #include <linux/mmc/core.h>
  20 #include <linux/mmc/sdio_func.h>
  21 #include <linux/mmc/sdio_ids.h>
  22 #include <linux/mmc/card.h>
  23 #include <linux/suspend.h>
  24 #include <linux/errno.h>
  25 #include <linux/sched.h>        /* request_irq() */
  26 #include <linux/module.h>
  27 #include <net/cfg80211.h>
  28
  29 #include <defs.h>
  30 #include <brcm_hw_ids.h>
  31 #include <brcmu_utils.h>
  32 #include <brcmu_wifi.h>
  33 #include "sdio_host.h"
  34 #include "dhd.h"
  35 #include "dhd_dbg.h"
  36 #include "wl_cfg80211.h"
  37
  38 #define SDIO_VENDOR_ID_BROADCOM         0x02d0
  39
  40 #define DMA_ALIGN_MASK  0x03
  41
  42 #define SDIO_DEVICE_ID_BROADCOM_4329    0x4329
  43 #define SDIO_DEVICE_ID_BROADCOM_4330    0x4330
  44
  45 #define SDIO_FUNC1_BLOCKSIZE            64
  46 #define SDIO_FUNC2_BLOCKSIZE            512
  47
  48 /* devices we support, null terminated */
  49 static const struct sdio_device_id brcmf_sdmmc_ids[] = {
  50         {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4329)},
  51         {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4330)},
  52         { /* end: all zeroes */ },
  53 };
  54 MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids);
  55
  56 static bool
  57 brcmf_pm_resume_error(struct brcmf_sdio_dev *sdiodev)
  58 {
  59         bool is_err = false;
  60 #ifdef CONFIG_PM_SLEEP
  61         is_err = atomic_read(&sdiodev->suspend);
  62 #endif
  63         return is_err;
  64 }
  65
  66 static void
  67 brcmf_pm_resume_wait(struct brcmf_sdio_dev *sdiodev, wait_queue_head_t *wq)
  68 {
  69 #ifdef CONFIG_PM_SLEEP
  70         int retry = 0;
  71         while (atomic_read(&sdiodev->suspend) && retry++ != 30)
  72                 wait_event_timeout(*wq, false, HZ/100);
  73 #endif
  74 }
  75
  76 static inline int brcmf_sdioh_f0_write_byte(struct brcmf_sdio_dev *sdiodev,
  77                                             uint regaddr, u8 *byte)
  78 {
  79         struct sdio_func *sdfunc = sdiodev->func[0];
  80         int err_ret;
  81
  82         /*
  83          * Can only directly write to some F0 registers.
  84          * Handle F2 enable/disable and Abort command
  85          * as a special case.
  86          */
  87         if (regaddr == SDIO_CCCR_IOEx) {
  88                 sdfunc = sdiodev->func[2];
  89                 if (sdfunc) {
  90                         sdio_claim_host(sdfunc);
  91                         if (*byte & SDIO_FUNC_ENABLE_2) {
  92                                 /* Enable Function 2 */
  93                                 err_ret = sdio_enable_func(sdfunc);
  94                                 if (err_ret)
  95                                         brcmf_dbg(ERROR,
  96                                                   "enable F2 failed:%d\n",
  97                                                   err_ret);
  98                         } else {
  99                                 /* Disable Function 2 */
 100                                 err_ret = sdio_disable_func(sdfunc);
 101                                 if (err_ret)
 102                                         brcmf_dbg(ERROR,
 103                                                   "Disable F2 failed:%d\n",
 104                                                   err_ret);
 105                         }
 106                         sdio_release_host(sdfunc);
 107                 }
 108         } else if (regaddr == SDIO_CCCR_ABORT) {
 109                 sdio_claim_host(sdfunc);
 110                 sdio_writeb(sdfunc, *byte, regaddr, &err_ret);
 111                 sdio_release_host(sdfunc);
 112         } else if (regaddr < 0xF0) {
 113                 brcmf_dbg(ERROR, "F0 Wr:0x%02x: write disallowed\n", regaddr);
 114                 err_ret = -EPERM;
 115         } else {
 116                 sdio_claim_host(sdfunc);
 117                 sdio_f0_writeb(sdfunc, *byte, regaddr, &err_ret);
 118                 sdio_release_host(sdfunc);
 119         }
 120
 121         return err_ret;
 122 }
 123
 124 int brcmf_sdioh_request_byte(struct brcmf_sdio_dev *sdiodev, uint rw, uint func,
 125                              uint regaddr, u8 *byte)
 126 {
 127         int err_ret;
 128
 129         brcmf_dbg(INFO, "rw=%d, func=%d, addr=0x%05x\n", rw, func, regaddr);
 130
 131         brcmf_pm_resume_wait(sdiodev, &sdiodev->request_byte_wait);
 132         if (brcmf_pm_resume_error(sdiodev))
 133                 return -EIO;
 134
 135         if (rw && func == 0) {
 136                 /* handle F0 separately */
 137                 err_ret = brcmf_sdioh_f0_write_byte(sdiodev, regaddr, byte);
 138         } else {
 139                 sdio_claim_host(sdiodev->func[func]);
 140                 if (rw) /* CMD52 Write */
 141                         sdio_writeb(sdiodev->func[func], *byte, regaddr,
 142                                     &err_ret);
 143                 else if (func == 0) {
 144                         *byte = sdio_f0_readb(sdiodev->func[func], regaddr,
 145                                               &err_ret);
 146                 } else {
 147                         *byte = sdio_readb(sdiodev->func[func], regaddr,
 148                                            &err_ret);
 149                 }
 150                 sdio_release_host(sdiodev->func[func]);
 151         }
 152
 153         if (err_ret)
 154                 brcmf_dbg(ERROR, "Failed to %s byte F%d:@0x%05x=%02x, Err: %d\n",
 155                           rw ? "write" : "read", func, regaddr, *byte, err_ret);
 156
 157         return err_ret;
 158 }
 159
 160 int brcmf_sdioh_request_word(struct brcmf_sdio_dev *sdiodev,
 161                              uint rw, uint func, uint addr, u32 *word,
 162                              uint nbytes)
 163 {
 164         int err_ret = -EIO;
 165
 166         if (func == 0) {
 167                 brcmf_dbg(ERROR, "Only CMD52 allowed to F0\n");
 168                 return -EINVAL;
 169         }
 170
 171         brcmf_dbg(INFO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n",
 172                   rw, func, addr, nbytes);
 173
 174         brcmf_pm_resume_wait(sdiodev, &sdiodev->request_word_wait);
 175         if (brcmf_pm_resume_error(sdiodev))
 176                 return -EIO;
 177         /* Claim host controller */
 178         sdio_claim_host(sdiodev->func[func]);
 179
 180         if (rw) {               /* CMD52 Write */
 181                 if (nbytes == 4)
 182                         sdio_writel(sdiodev->func[func], *word, addr,
 183                                     &err_ret);
 184                 else if (nbytes == 2)
 185                         sdio_writew(sdiodev->func[func], (*word & 0xFFFF),
 186                                     addr, &err_ret);
 187                 else
 188                         brcmf_dbg(ERROR, "Invalid nbytes: %d\n", nbytes);
 189         } else {                /* CMD52 Read */
 190                 if (nbytes == 4)
 191                         *word = sdio_readl(sdiodev->func[func], addr, &err_ret);
 192                 else if (nbytes == 2)
 193                         *word = sdio_readw(sdiodev->func[func], addr,
 194                                            &err_ret) & 0xFFFF;
 195                 else
 196                         brcmf_dbg(ERROR, "Invalid nbytes: %d\n", nbytes);
 197         }
 198
 199         /* Release host controller */
 200         sdio_release_host(sdiodev->func[func]);
 201
 202         if (err_ret)
 203                 brcmf_dbg(ERROR, "Failed to %s word, Err: 0x%08x\n",
 204                           rw ? "write" : "read", err_ret);
 205
 206         return err_ret;
 207 }
 208
 209 /* precondition: host controller is claimed */
 210 static int
 211 brcmf_sdioh_request_data(struct brcmf_sdio_dev *sdiodev, uint write, bool fifo,
 212                          uint func, uint addr, struct sk_buff *pkt, uint pktlen)
 213 {
 214         int err_ret = 0;
 215
 216         if ((write) && (!fifo)) {
 217                 err_ret = sdio_memcpy_toio(sdiodev->func[func], addr,
 218                                            ((u8 *) (pkt->data)), pktlen);
 219         } else if (write) {
 220                 err_ret = sdio_memcpy_toio(sdiodev->func[func], addr,
 221                                            ((u8 *) (pkt->data)), pktlen);
 222         } else if (fifo) {
 223                 err_ret = sdio_readsb(sdiodev->func[func],
 224                                       ((u8 *) (pkt->data)), addr, pktlen);
 225         } else {
 226                 err_ret = sdio_memcpy_fromio(sdiodev->func[func],
 227                                              ((u8 *) (pkt->data)),
 228                                              addr, pktlen);
 229         }
 230
 231         return err_ret;
 232 }
 233
 234 /*
 235  * This function takes a queue of packets. The packets on the queue
 236  * are assumed to be properly aligned by the caller.
 237  */
 238 int
 239 brcmf_sdioh_request_chain(struct brcmf_sdio_dev *sdiodev, uint fix_inc,
 240                           uint write, uint func, uint addr,
 241                           struct sk_buff_head *pktq)
 242 {
 243         bool fifo = (fix_inc == SDIOH_DATA_FIX);
 244         u32 SGCount = 0;
 245         int err_ret = 0;
 246
 247         struct sk_buff *pkt;
 248
 249         brcmf_dbg(TRACE, "Enter\n");
 250
 251         brcmf_pm_resume_wait(sdiodev, &sdiodev->request_chain_wait);
 252         if (brcmf_pm_resume_error(sdiodev))
 253                 return -EIO;
 254
 255         /* Claim host controller */
 256         sdio_claim_host(sdiodev->func[func]);
 257
 258         skb_queue_walk(pktq, pkt) {
 259                 uint pkt_len = pkt->len;
 260                 pkt_len += 3;
 261                 pkt_len &= 0xFFFFFFFC;
 262
 263                 err_ret = brcmf_sdioh_request_data(sdiodev, write, fifo, func,
 264                                                    addr, pkt, pkt_len);
 265                 if (err_ret) {
 266                         brcmf_dbg(ERROR, "%s FAILED %p[%d], addr=0x%05x, pkt_len=%d, ERR=0x%08x\n",
 267                                   write ? "TX" : "RX", pkt, SGCount, addr,
 268                                   pkt_len, err_ret);
 269                 } else {
 270                         brcmf_dbg(TRACE, "%s xfr'd %p[%d], addr=0x%05x, len=%d\n",
 271                                   write ? "TX" : "RX", pkt, SGCount, addr,
 272                                   pkt_len);
 273                 }
 274                 if (!fifo)
 275                         addr += pkt_len;
 276
 277                 SGCount++;
 278         }
 279
 280         /* Release host controller */
 281         sdio_release_host(sdiodev->func[func]);
 282
 283         brcmf_dbg(TRACE, "Exit\n");
 284         return err_ret;
 285 }
 286
 287 /*
 288  * This function takes a single DMA-able packet.
 289  */
 290 int brcmf_sdioh_request_buffer(struct brcmf_sdio_dev *sdiodev,
 291                                uint fix_inc, uint write, uint func, uint addr,
 292                                struct sk_buff *pkt)
 293 {
 294         int status;
 295         uint pkt_len = pkt->len;
 296         bool fifo = (fix_inc == SDIOH_DATA_FIX);
 297
 298         brcmf_dbg(TRACE, "Enter\n");
 299
 300         if (pkt == NULL)
 301                 return -EINVAL;
 302
 303         brcmf_pm_resume_wait(sdiodev, &sdiodev->request_buffer_wait);
 304         if (brcmf_pm_resume_error(sdiodev))
 305                 return -EIO;
 306
 307         /* Claim host controller */
 308         sdio_claim_host(sdiodev->func[func]);
 309
 310         pkt_len += 3;
 311         pkt_len &= (uint)~3;
 312
 313         status = brcmf_sdioh_request_data(sdiodev, write, fifo, func,
 314                                            addr, pkt, pkt_len);
 315         if (status) {
 316                 brcmf_dbg(ERROR, "%s FAILED %p, addr=0x%05x, pkt_len=%d, ERR=0x%08x\n",
 317                           write ? "TX" : "RX", pkt, addr, pkt_len, status);
 318         } else {
 319                 brcmf_dbg(TRACE, "%s xfr'd %p, addr=0x%05x, len=%d\n",
 320                           write ? "TX" : "RX", pkt, addr, pkt_len);
 321         }
 322
 323         /* Release host controller */
 324         sdio_release_host(sdiodev->func[func]);
 325
 326         return status;
 327 }
 328
 329 /* Read client card reg */
 330 static int
 331 brcmf_sdioh_card_regread(struct brcmf_sdio_dev *sdiodev, int func, u32 regaddr,
 332                          int regsize, u32 *data)
 333 {
 334
 335         if ((func == 0) || (regsize == 1)) {
 336                 u8 temp = 0;
 337
 338                 brcmf_sdioh_request_byte(sdiodev, SDIOH_READ, func, regaddr,
 339                                          &temp);
 340                 *data = temp;
 341                 *data &= 0xff;
 342                 brcmf_dbg(DATA, "byte read data=0x%02x\n", *data);
 343         } else {
 344                 brcmf_sdioh_request_word(sdiodev, SDIOH_READ, func, regaddr,
 345                                          data, regsize);
 346                 if (regsize == 2)
 347                         *data &= 0xffff;
 348
 349                 brcmf_dbg(DATA, "word read data=0x%08x\n", *data);
 350         }
 351
 352         return SUCCESS;
 353 }
 354
 355 static int brcmf_sdioh_get_cisaddr(struct brcmf_sdio_dev *sdiodev, u32 regaddr)
 356 {
 357         /* read 24 bits and return valid 17 bit addr */
 358         int i;
 359         u32 scratch, regdata;
 360         __le32 scratch_le;
 361         u8 *ptr = (u8 *)&scratch_le;
 362
 363         for (i = 0; i < 3; i++) {
 364                 if ((brcmf_sdioh_card_regread(sdiodev, 0, regaddr, 1,
 365                                 &regdata)) != SUCCESS)
 366                         brcmf_dbg(ERROR, "Can't read!\n");
 367
 368                 *ptr++ = (u8) regdata;
 369                 regaddr++;
 370         }
 371
 372         /* Only the lower 17-bits are valid */
 373         scratch = le32_to_cpu(scratch_le);
 374         scratch &= 0x0001FFFF;
 375         return scratch;
 376 }
 377
 378 static int brcmf_sdioh_enablefuncs(struct brcmf_sdio_dev *sdiodev)
 379 {
 380         int err_ret;
 381         u32 fbraddr;
 382         u8 func;
 383
 384         brcmf_dbg(TRACE, "\n");
 385
 386         /* Get the Card's common CIS address */
 387         sdiodev->func_cis_ptr[0] = brcmf_sdioh_get_cisaddr(sdiodev,
 388                                                            SDIO_CCCR_CIS);
 389         brcmf_dbg(INFO, "Card's Common CIS Ptr = 0x%x\n",
 390                   sdiodev->func_cis_ptr[0]);
 391
 392         /* Get the Card's function CIS (for each function) */
 393         for (fbraddr = SDIO_FBR_BASE(1), func = 1;
 394              func <= sdiodev->num_funcs; func++, fbraddr += SDIOD_FBR_SIZE) {
 395                 sdiodev->func_cis_ptr[func] =
 396                     brcmf_sdioh_get_cisaddr(sdiodev, SDIO_FBR_CIS + fbraddr);
 397                 brcmf_dbg(INFO, "Function %d CIS Ptr = 0x%x\n",
 398                           func, sdiodev->func_cis_ptr[func]);
 399         }
 400
 401         /* Enable Function 1 */
 402         sdio_claim_host(sdiodev->func[1]);
 403         err_ret = sdio_enable_func(sdiodev->func[1]);
 404         sdio_release_host(sdiodev->func[1]);
 405         if (err_ret)
 406                 brcmf_dbg(ERROR, "Failed to enable F1 Err: 0x%08x\n", err_ret);
 407
 408         return false;
 409 }
 410
 411 /*
 412  *      Public entry points & extern's
 413  */
 414 int brcmf_sdioh_attach(struct brcmf_sdio_dev *sdiodev)
 415 {
 416         int err_ret = 0;
 417
 418         brcmf_dbg(TRACE, "\n");
 419
 420         sdiodev->num_funcs = 2;
 421
 422         sdio_claim_host(sdiodev->func[1]);
 423         err_ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE);
 424         sdio_release_host(sdiodev->func[1]);
 425         if (err_ret) {
 426                 brcmf_dbg(ERROR, "Failed to set F1 blocksize\n");
 427                 goto out;
 428         }
 429
 430         sdio_claim_host(sdiodev->func[2]);
 431         err_ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE);
 432         sdio_release_host(sdiodev->func[2]);
 433         if (err_ret) {
 434                 brcmf_dbg(ERROR, "Failed to set F2 blocksize\n");
 435                 goto out;
 436         }
 437
 438         brcmf_sdioh_enablefuncs(sdiodev);
 439
 440 out:
 441         brcmf_dbg(TRACE, "Done\n");
 442         return err_ret;
 443 }
 444
 445 void brcmf_sdioh_detach(struct brcmf_sdio_dev *sdiodev)
 446 {
 447         brcmf_dbg(TRACE, "\n");
 448
 449         /* Disable Function 2 */
 450         sdio_claim_host(sdiodev->func[2]);
 451         sdio_disable_func(sdiodev->func[2]);
 452         sdio_release_host(sdiodev->func[2]);
 453
 454         /* Disable Function 1 */
 455         sdio_claim_host(sdiodev->func[1]);
 456         sdio_disable_func(sdiodev->func[1]);
 457         sdio_release_host(sdiodev->func[1]);
 458
 459 }
 460
 461 static int brcmf_ops_sdio_probe(struct sdio_func *func,
 462                               const struct sdio_device_id *id)
 463 {
 464         int ret = 0;
 465         struct brcmf_sdio_dev *sdiodev;
 466         struct brcmf_bus *bus_if;
 467         brcmf_dbg(TRACE, "Enter\n");
 468         brcmf_dbg(TRACE, "func->class=%x\n", func->class);
 469         brcmf_dbg(TRACE, "sdio_vendor: 0x%04x\n", func->vendor);
 470         brcmf_dbg(TRACE, "sdio_device: 0x%04x\n", func->device);
 471         brcmf_dbg(TRACE, "Function#: 0x%04x\n", func->num);
 472
 473         if (func->num == 1) {
 474                 if (dev_get_drvdata(&func->card->dev)) {
 475                         brcmf_dbg(ERROR, "card private drvdata occupied\n");
 476                         return -ENXIO;
 477                 }
 478                 bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL);
 479                 if (!bus_if)
 480                         return -ENOMEM;
 481                 sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL);
 482                 if (!sdiodev) {
 483                         kfree(bus_if);
 484                         return -ENOMEM;
 485                 }
 486                 sdiodev->func[0] = func->card->sdio_func[0];
 487                 sdiodev->func[1] = func;
 488                 sdiodev->bus_if = bus_if;
 489                 bus_if->bus_priv = sdiodev;
 490                 bus_if->type = SDIO_BUS;
 491                 bus_if->align = BRCMF_SDALIGN;
 492                 dev_set_drvdata(&func->card->dev, sdiodev);
 493
 494                 atomic_set(&sdiodev->suspend, false);
 495                 init_waitqueue_head(&sdiodev->request_byte_wait);
 496                 init_waitqueue_head(&sdiodev->request_word_wait);
 497                 init_waitqueue_head(&sdiodev->request_chain_wait);
 498                 init_waitqueue_head(&sdiodev->request_buffer_wait);
 499         }
 500
 501         if (func->num == 2) {
 502                 sdiodev = dev_get_drvdata(&func->card->dev);
 503                 if ((!sdiodev) || (sdiodev->func[1]->card != func->card))
 504                         return -ENODEV;
 505                 sdiodev->func[2] = func;
 506
 507                 bus_if = sdiodev->bus_if;
 508                 sdiodev->dev = &func->dev;
 509                 dev_set_drvdata(&func->dev, bus_if);
 510
 511                 brcmf_dbg(TRACE, "F2 found, calling brcmf_sdio_probe...\n");
 512                 ret = brcmf_sdio_probe(sdiodev);
 513         }
 514
 515         return ret;
 516 }
 517
 518 static void brcmf_ops_sdio_remove(struct sdio_func *func)
 519 {
 520         struct brcmf_bus *bus_if;
 521         struct brcmf_sdio_dev *sdiodev;
 522         brcmf_dbg(TRACE, "Enter\n");
 523         brcmf_dbg(INFO, "func->class=%x\n", func->class);
 524         brcmf_dbg(INFO, "sdio_vendor: 0x%04x\n", func->vendor);
 525         brcmf_dbg(INFO, "sdio_device: 0x%04x\n", func->device);
 526         brcmf_dbg(INFO, "Function#: 0x%04x\n", func->num);
 527
 528         if (func->num == 2) {
 529                 bus_if = dev_get_drvdata(&func->dev);
 530                 sdiodev = bus_if->bus_priv;
 531                 brcmf_dbg(TRACE, "F2 found, calling brcmf_sdio_remove...\n");
 532                 brcmf_sdio_remove(sdiodev);
 533                 dev_set_drvdata(&func->card->dev, NULL);
 534                 dev_set_drvdata(&func->dev, NULL);
 535                 kfree(bus_if);
 536                 kfree(sdiodev);
 537         }
 538 }
 539
 540 #ifdef CONFIG_PM_SLEEP
 541 static int brcmf_sdio_suspend(struct device *dev)
 542 {
 543         mmc_pm_flag_t sdio_flags;
 544         struct sdio_func *func = dev_to_sdio_func(dev);
 545         struct brcmf_sdio_dev *sdiodev = dev_get_drvdata(&func->card->dev);
 546         int ret = 0;
 547
 548         brcmf_dbg(TRACE, "\n");
 549
 550         atomic_set(&sdiodev->suspend, true);
 551
 552         sdio_flags = sdio_get_host_pm_caps(sdiodev->func[1]);
 553         if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
 554                 brcmf_dbg(ERROR, "Host can't keep power while suspended\n");
 555                 return -EINVAL;
 556         }
 557
 558         ret = sdio_set_host_pm_flags(sdiodev->func[1], MMC_PM_KEEP_POWER);
 559         if (ret) {
 560                 brcmf_dbg(ERROR, "Failed to set pm_flags\n");
 561                 return ret;
 562         }
 563
 564         brcmf_sdio_wdtmr_enable(sdiodev, false);
 565
 566         return ret;
 567 }
 568
 569 static int brcmf_sdio_resume(struct device *dev)
 570 {
 571         struct sdio_func *func = dev_to_sdio_func(dev);
 572         struct brcmf_sdio_dev *sdiodev = dev_get_drvdata(&func->card->dev);
 573
 574         brcmf_sdio_wdtmr_enable(sdiodev, true);
 575         atomic_set(&sdiodev->suspend, false);
 576         return 0;
 577 }
 578
 579 static const struct dev_pm_ops brcmf_sdio_pm_ops = {
 580         .suspend        = brcmf_sdio_suspend,
 581         .resume         = brcmf_sdio_resume,
 582 };
 583 #endif  /* CONFIG_PM_SLEEP */
 584
 585 static struct sdio_driver brcmf_sdmmc_driver = {
 586         .probe = brcmf_ops_sdio_probe,
 587         .remove = brcmf_ops_sdio_remove,
 588         .name = "brcmfmac",
 589         .id_table = brcmf_sdmmc_ids,
 590 #ifdef CONFIG_PM_SLEEP
 591         .drv = {
 592                 .pm = &brcmf_sdio_pm_ops,
 593         },
 594 #endif  /* CONFIG_PM_SLEEP */
 595 };
 596
 597 static void __exit brcmf_sdio_exit(void)
 598 {
 599         brcmf_dbg(TRACE, "Enter\n");
 600
 601         sdio_unregister_driver(&brcmf_sdmmc_driver);
 602 }
 603
 604 static int __init brcmf_sdio_init(void)
 605 {
 606         int ret;
 607
 608         brcmf_dbg(TRACE, "Enter\n");
 609
 610         ret = sdio_register_driver(&brcmf_sdmmc_driver);
 611
 612         if (ret)
 613                 brcmf_dbg(ERROR, "sdio_register_driver failed: %d\n", ret);
 614
 615         return ret;
 616 }
 617
 618 module_init(brcmf_sdio_init);
 619 module_exit(brcmf_sdio_exit);