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
  17 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  18
  19 #include <linux/types.h>
  20 #include <linux/netdevice.h>
  21 #include <linux/mmc/sdio.h>
  22 #include <linux/mmc/core.h>
  23 #include <linux/mmc/sdio_func.h>
  24 #include <linux/mmc/sdio_ids.h>
  25 #include <linux/mmc/card.h>
  26 #include <linux/suspend.h>
  27 #include <linux/errno.h>
  28 #include <linux/sched.h>        /* request_irq() */
  29 #include <linux/module.h>
  30 #include <linux/platform_device.h>
  31 #include <net/cfg80211.h>
  32
  33 #include <defs.h>
  34 #include <brcm_hw_ids.h>
  35 #include <brcmu_utils.h>
  36 #include <brcmu_wifi.h>
  37 #include "sdio_host.h"
  38 #include "dhd_dbg.h"
  39 #include "dhd_bus.h"
  40
  41 #define SDIO_VENDOR_ID_BROADCOM         0x02d0
  42
  43 #define DMA_ALIGN_MASK  0x03
  44
  45 #define SDIO_DEVICE_ID_BROADCOM_43241   0x4324
  46 #define SDIO_DEVICE_ID_BROADCOM_4329    0x4329
  47 #define SDIO_DEVICE_ID_BROADCOM_4330    0x4330
  48 #define SDIO_DEVICE_ID_BROADCOM_4334    0x4334
  49
  50 #define SDIO_FUNC1_BLOCKSIZE            64
  51 #define SDIO_FUNC2_BLOCKSIZE            512
  52
  53 /* devices we support, null terminated */
  54 static const struct sdio_device_id brcmf_sdmmc_ids[] = {
  55         {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_43241)},
  56         {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4329)},
  57         {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4330)},
  58         {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4334)},
  59         { /* end: all zeroes */ },
  60 };
  61 MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids);
  62
  63 #ifdef CONFIG_BRCMFMAC_SDIO_OOB
  64 static struct list_head oobirq_lh;
  65 struct brcmf_sdio_oobirq {
  66         unsigned int irq;
  67         unsigned long flags;
  68         struct list_head list;
  69 };
  70 #endif          /* CONFIG_BRCMFMAC_SDIO_OOB */
  71
  72 static bool
  73 brcmf_pm_resume_error(struct brcmf_sdio_dev *sdiodev)
  74 {
  75         bool is_err = false;
  76 #ifdef CONFIG_PM_SLEEP
  77         is_err = atomic_read(&sdiodev->suspend);
  78 #endif
  79         return is_err;
  80 }
  81
  82 static void
  83 brcmf_pm_resume_wait(struct brcmf_sdio_dev *sdiodev, wait_queue_head_t *wq)
  84 {
  85 #ifdef CONFIG_PM_SLEEP
  86         int retry = 0;
  87         while (atomic_read(&sdiodev->suspend) && retry++ != 30)
  88                 wait_event_timeout(*wq, false, HZ/100);
  89 #endif
  90 }
  91
  92 static inline int brcmf_sdioh_f0_write_byte(struct brcmf_sdio_dev *sdiodev,
  93                                             uint regaddr, u8 *byte)
  94 {
  95         struct sdio_func *sdfunc = sdiodev->func[0];
  96         int err_ret;
  97
  98         /*
  99          * Can only directly write to some F0 registers.
 100          * Handle F2 enable/disable and Abort command
 101          * as a special case.
 102          */
 103         if (regaddr == SDIO_CCCR_IOEx) {
 104                 sdfunc = sdiodev->func[2];
 105                 if (sdfunc) {
 106                         if (*byte & SDIO_FUNC_ENABLE_2) {
 107                                 /* Enable Function 2 */
 108                                 err_ret = sdio_enable_func(sdfunc);
 109                                 if (err_ret)
 110                                         brcmf_err("enable F2 failed:%d\n",
 111                                                   err_ret);
 112                         } else {
 113                                 /* Disable Function 2 */
 114                                 err_ret = sdio_disable_func(sdfunc);
 115                                 if (err_ret)
 116                                         brcmf_err("Disable F2 failed:%d\n",
 117                                                   err_ret);
 118                         }
 119                 }
 120         } else if ((regaddr == SDIO_CCCR_ABORT) ||
 121                    (regaddr == SDIO_CCCR_IENx)) {
 122                 sdfunc = kmemdup(sdiodev->func[0], sizeof(struct sdio_func),
 123                                  GFP_KERNEL);
 124                 if (!sdfunc)
 125                         return -ENOMEM;
 126                 sdfunc->num = 0;
 127                 sdio_writeb(sdfunc, *byte, regaddr, &err_ret);
 128                 kfree(sdfunc);
 129         } else if (regaddr < 0xF0) {
 130                 brcmf_err("F0 Wr:0x%02x: write disallowed\n", regaddr);
 131                 err_ret = -EPERM;
 132         } else {
 133                 sdio_f0_writeb(sdfunc, *byte, regaddr, &err_ret);
 134         }
 135
 136         return err_ret;
 137 }
 138
 139 int brcmf_sdioh_request_byte(struct brcmf_sdio_dev *sdiodev, uint rw, uint func,
 140                              uint regaddr, u8 *byte)
 141 {
 142         int err_ret;
 143
 144         brcmf_dbg(INFO, "rw=%d, func=%d, addr=0x%05x\n", rw, func, regaddr);
 145
 146         brcmf_pm_resume_wait(sdiodev, &sdiodev->request_byte_wait);
 147         if (brcmf_pm_resume_error(sdiodev))
 148                 return -EIO;
 149
 150         if (rw && func == 0) {
 151                 /* handle F0 separately */
 152                 err_ret = brcmf_sdioh_f0_write_byte(sdiodev, regaddr, byte);
 153         } else {
 154                 if (rw) /* CMD52 Write */
 155                         sdio_writeb(sdiodev->func[func], *byte, regaddr,
 156                                     &err_ret);
 157                 else if (func == 0) {
 158                         *byte = sdio_f0_readb(sdiodev->func[func], regaddr,
 159                                               &err_ret);
 160                 } else {
 161                         *byte = sdio_readb(sdiodev->func[func], regaddr,
 162                                            &err_ret);
 163                 }
 164         }
 165
 166         if (err_ret)
 167                 brcmf_err("Failed to %s byte F%d:@0x%05x=%02x, Err: %d\n",
 168                           rw ? "write" : "read", func, regaddr, *byte, err_ret);
 169
 170         return err_ret;
 171 }
 172
 173 int brcmf_sdioh_request_word(struct brcmf_sdio_dev *sdiodev,
 174                              uint rw, uint func, uint addr, u32 *word,
 175                              uint nbytes)
 176 {
 177         int err_ret = -EIO;
 178
 179         if (func == 0) {
 180                 brcmf_err("Only CMD52 allowed to F0\n");
 181                 return -EINVAL;
 182         }
 183
 184         brcmf_dbg(INFO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n",
 185                   rw, func, addr, nbytes);
 186
 187         brcmf_pm_resume_wait(sdiodev, &sdiodev->request_word_wait);
 188         if (brcmf_pm_resume_error(sdiodev))
 189                 return -EIO;
 190
 191         if (rw) {               /* CMD52 Write */
 192                 if (nbytes == 4)
 193                         sdio_writel(sdiodev->func[func], *word, addr,
 194                                     &err_ret);
 195                 else if (nbytes == 2)
 196                         sdio_writew(sdiodev->func[func], (*word & 0xFFFF),
 197                                     addr, &err_ret);
 198                 else
 199                         brcmf_err("Invalid nbytes: %d\n", nbytes);
 200         } else {                /* CMD52 Read */
 201                 if (nbytes == 4)
 202                         *word = sdio_readl(sdiodev->func[func], addr, &err_ret);
 203                 else if (nbytes == 2)
 204                         *word = sdio_readw(sdiodev->func[func], addr,
 205                                            &err_ret) & 0xFFFF;
 206                 else
 207                         brcmf_err("Invalid nbytes: %d\n", nbytes);
 208         }
 209
 210         if (err_ret)
 211                 brcmf_err("Failed to %s word, Err: 0x%08x\n",
 212                           rw ? "write" : "read", err_ret);
 213
 214         return err_ret;
 215 }
 216
 217 /* precondition: host controller is claimed */
 218 static int
 219 brcmf_sdioh_request_data(struct brcmf_sdio_dev *sdiodev, uint write, bool fifo,
 220                          uint func, uint addr, struct sk_buff *pkt, uint pktlen)
 221 {
 222         int err_ret = 0;
 223
 224         if ((write) && (!fifo)) {
 225                 err_ret = sdio_memcpy_toio(sdiodev->func[func], addr,
 226                                            ((u8 *) (pkt->data)), pktlen);
 227         } else if (write) {
 228                 err_ret = sdio_memcpy_toio(sdiodev->func[func], addr,
 229                                            ((u8 *) (pkt->data)), pktlen);
 230         } else if (fifo) {
 231                 err_ret = sdio_readsb(sdiodev->func[func],
 232                                       ((u8 *) (pkt->data)), addr, pktlen);
 233         } else {
 234                 err_ret = sdio_memcpy_fromio(sdiodev->func[func],
 235                                              ((u8 *) (pkt->data)),
 236                                              addr, pktlen);
 237         }
 238
 239         return err_ret;
 240 }
 241
 242 /*
 243  * This function takes a queue of packets. The packets on the queue
 244  * are assumed to be properly aligned by the caller.
 245  */
 246 int
 247 brcmf_sdioh_request_chain(struct brcmf_sdio_dev *sdiodev, uint fix_inc,
 248                           uint write, uint func, uint addr,
 249                           struct sk_buff_head *pktq)
 250 {
 251         bool fifo = (fix_inc == SDIOH_DATA_FIX);
 252         u32 SGCount = 0;
 253         int err_ret = 0;
 254
 255         struct sk_buff *pkt;
 256
 257         brcmf_dbg(TRACE, "Enter\n");
 258
 259         brcmf_pm_resume_wait(sdiodev, &sdiodev->request_chain_wait);
 260         if (brcmf_pm_resume_error(sdiodev))
 261                 return -EIO;
 262
 263         skb_queue_walk(pktq, pkt) {
 264                 uint pkt_len = pkt->len;
 265                 pkt_len += 3;
 266                 pkt_len &= 0xFFFFFFFC;
 267
 268                 err_ret = brcmf_sdioh_request_data(sdiodev, write, fifo, func,
 269                                                    addr, pkt, pkt_len);
 270                 if (err_ret) {
 271                         brcmf_err("%s FAILED %p[%d], addr=0x%05x, pkt_len=%d, ERR=0x%08x\n",
 272                                   write ? "TX" : "RX", pkt, SGCount, addr,
 273                                   pkt_len, err_ret);
 274                 } else {
 275                         brcmf_dbg(TRACE, "%s xfr'd %p[%d], addr=0x%05x, len=%d\n",
 276                                   write ? "TX" : "RX", pkt, SGCount, addr,
 277                                   pkt_len);
 278                 }
 279                 if (!fifo)
 280                         addr += pkt_len;
 281
 282                 SGCount++;
 283         }
 284
 285         brcmf_dbg(TRACE, "Exit\n");
 286         return err_ret;
 287 }
 288
 289 /*
 290  * This function takes a single DMA-able packet.
 291  */
 292 int brcmf_sdioh_request_buffer(struct brcmf_sdio_dev *sdiodev,
 293                                uint fix_inc, uint write, uint func, uint addr,
 294                                struct sk_buff *pkt)
 295 {
 296         int status;
 297         uint pkt_len;
 298         bool fifo = (fix_inc == SDIOH_DATA_FIX);
 299
 300         brcmf_dbg(TRACE, "Enter\n");
 301
 302         if (pkt == NULL)
 303                 return -EINVAL;
 304         pkt_len = pkt->len;
 305
 306         brcmf_pm_resume_wait(sdiodev, &sdiodev->request_buffer_wait);
 307         if (brcmf_pm_resume_error(sdiodev))
 308                 return -EIO;
 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_err("%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         return status;
 324 }
 325
 326 static int brcmf_sdioh_get_cisaddr(struct brcmf_sdio_dev *sdiodev, u32 regaddr)
 327 {
 328         /* read 24 bits and return valid 17 bit addr */
 329         int i, ret;
 330         u32 scratch, regdata;
 331         __le32 scratch_le;
 332         u8 *ptr = (u8 *)&scratch_le;
 333
 334         for (i = 0; i < 3; i++) {
 335                 regdata = brcmf_sdio_regrl(sdiodev, regaddr, &ret);
 336                 if (ret != 0)
 337                         brcmf_err("Can't read!\n");
 338
 339                 *ptr++ = (u8) regdata;
 340                 regaddr++;
 341         }
 342
 343         /* Only the lower 17-bits are valid */
 344         scratch = le32_to_cpu(scratch_le);
 345         scratch &= 0x0001FFFF;
 346         return scratch;
 347 }
 348
 349 static int brcmf_sdioh_enablefuncs(struct brcmf_sdio_dev *sdiodev)
 350 {
 351         int err_ret;
 352         u32 fbraddr;
 353         u8 func;
 354
 355         brcmf_dbg(TRACE, "\n");
 356
 357         /* Get the Card's common CIS address */
 358         sdiodev->func_cis_ptr[0] = brcmf_sdioh_get_cisaddr(sdiodev,
 359                                                            SDIO_CCCR_CIS);
 360         brcmf_dbg(INFO, "Card's Common CIS Ptr = 0x%x\n",
 361                   sdiodev->func_cis_ptr[0]);
 362
 363         /* Get the Card's function CIS (for each function) */
 364         for (fbraddr = SDIO_FBR_BASE(1), func = 1;
 365              func <= sdiodev->num_funcs; func++, fbraddr += SDIOD_FBR_SIZE) {
 366                 sdiodev->func_cis_ptr[func] =
 367                     brcmf_sdioh_get_cisaddr(sdiodev, SDIO_FBR_CIS + fbraddr);
 368                 brcmf_dbg(INFO, "Function %d CIS Ptr = 0x%x\n",
 369                           func, sdiodev->func_cis_ptr[func]);
 370         }
 371
 372         /* Enable Function 1 */
 373         err_ret = sdio_enable_func(sdiodev->func[1]);
 374         if (err_ret)
 375                 brcmf_err("Failed to enable F1 Err: 0x%08x\n", err_ret);
 376
 377         return false;
 378 }
 379
 380 /*
 381  *      Public entry points & extern's
 382  */
 383 int brcmf_sdioh_attach(struct brcmf_sdio_dev *sdiodev)
 384 {
 385         int err_ret = 0;
 386
 387         brcmf_dbg(TRACE, "\n");
 388
 389         sdiodev->num_funcs = 2;
 390
 391         sdio_claim_host(sdiodev->func[1]);
 392
 393         err_ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE);
 394         if (err_ret) {
 395                 brcmf_err("Failed to set F1 blocksize\n");
 396                 goto out;
 397         }
 398
 399         err_ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE);
 400         if (err_ret) {
 401                 brcmf_err("Failed to set F2 blocksize\n");
 402                 goto out;
 403         }
 404
 405         brcmf_sdioh_enablefuncs(sdiodev);
 406
 407 out:
 408         sdio_release_host(sdiodev->func[1]);
 409         brcmf_dbg(TRACE, "Done\n");
 410         return err_ret;
 411 }
 412
 413 void brcmf_sdioh_detach(struct brcmf_sdio_dev *sdiodev)
 414 {
 415         brcmf_dbg(TRACE, "\n");
 416
 417         /* Disable Function 2 */
 418         sdio_claim_host(sdiodev->func[2]);
 419         sdio_disable_func(sdiodev->func[2]);
 420         sdio_release_host(sdiodev->func[2]);
 421
 422         /* Disable Function 1 */
 423         sdio_claim_host(sdiodev->func[1]);
 424         sdio_disable_func(sdiodev->func[1]);
 425         sdio_release_host(sdiodev->func[1]);
 426
 427 }
 428
 429 #ifdef CONFIG_BRCMFMAC_SDIO_OOB
 430 static int brcmf_sdio_getintrcfg(struct brcmf_sdio_dev *sdiodev)
 431 {
 432         struct brcmf_sdio_oobirq *oobirq_entry;
 433
 434         if (list_empty(&oobirq_lh)) {
 435                 brcmf_err("no valid oob irq resource\n");
 436                 return -ENXIO;
 437         }
 438
 439         oobirq_entry = list_first_entry(&oobirq_lh, struct brcmf_sdio_oobirq,
 440                                         list);
 441
 442         sdiodev->irq = oobirq_entry->irq;
 443         sdiodev->irq_flags = oobirq_entry->flags;
 444         list_del(&oobirq_entry->list);
 445         kfree(oobirq_entry);
 446
 447         return 0;
 448 }
 449 #else
 450 static inline int brcmf_sdio_getintrcfg(struct brcmf_sdio_dev *sdiodev)
 451 {
 452         return 0;
 453 }
 454 #endif          /* CONFIG_BRCMFMAC_SDIO_OOB */
 455
 456 static int brcmf_ops_sdio_probe(struct sdio_func *func,
 457                                 const struct sdio_device_id *id)
 458 {
 459         int err;
 460         struct brcmf_sdio_dev *sdiodev;
 461         struct brcmf_bus *bus_if;
 462
 463         brcmf_dbg(TRACE, "Enter\n");
 464         brcmf_dbg(TRACE, "Class=%x\n", func->class);
 465         brcmf_dbg(TRACE, "sdio vendor ID: 0x%04x\n", func->vendor);
 466         brcmf_dbg(TRACE, "sdio device ID: 0x%04x\n", func->device);
 467         brcmf_dbg(TRACE, "Function#: %d\n", func->num);
 468
 469         /* Consume func num 1 but dont do anything with it. */
 470         if (func->num == 1)
 471                 return 0;
 472
 473         /* Ignore anything but func 2 */
 474         if (func->num != 2)
 475                 return -ENODEV;
 476
 477         bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL);
 478         if (!bus_if)
 479                 return -ENOMEM;
 480         sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL);
 481         if (!sdiodev) {
 482                 kfree(bus_if);
 483                 return -ENOMEM;
 484         }
 485
 486         sdiodev->func[0] = func->card->sdio_func[0];
 487         sdiodev->func[1] = func->card->sdio_func[0];
 488         sdiodev->func[2] = func;
 489
 490         sdiodev->bus_if = bus_if;
 491         bus_if->bus_priv.sdio = sdiodev;
 492         bus_if->align = BRCMF_SDALIGN;
 493         dev_set_drvdata(&func->dev, bus_if);
 494         dev_set_drvdata(&sdiodev->func[1]->dev, bus_if);
 495         sdiodev->dev = &sdiodev->func[1]->dev;
 496
 497         atomic_set(&sdiodev->suspend, false);
 498         init_waitqueue_head(&sdiodev->request_byte_wait);
 499         init_waitqueue_head(&sdiodev->request_word_wait);
 500         init_waitqueue_head(&sdiodev->request_chain_wait);
 501         init_waitqueue_head(&sdiodev->request_buffer_wait);
 502         err = brcmf_sdio_getintrcfg(sdiodev);
 503         if (err)
 504                 goto fail;
 505
 506         brcmf_dbg(TRACE, "F2 found, calling brcmf_sdio_probe...\n");
 507         err = brcmf_sdio_probe(sdiodev);
 508         if (err) {
 509                 brcmf_err("F2 error, probe failed %d...\n", err);
 510                 goto fail;
 511         }
 512         brcmf_dbg(TRACE, "F2 init completed...\n");
 513         return 0;
 514
 515 fail:
 516         dev_set_drvdata(&func->dev, NULL);
 517         dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
 518         kfree(sdiodev);
 519         kfree(bus_if);
 520         return err;
 521 }
 522
 523 static void brcmf_ops_sdio_remove(struct sdio_func *func)
 524 {
 525         struct brcmf_bus *bus_if;
 526         struct brcmf_sdio_dev *sdiodev;
 527
 528         brcmf_dbg(TRACE, "Enter\n");
 529         brcmf_dbg(TRACE, "sdio vendor ID: 0x%04x\n", func->vendor);
 530         brcmf_dbg(TRACE, "sdio device ID: 0x%04x\n", func->device);
 531         brcmf_dbg(TRACE, "Function: %d\n", func->num);
 532
 533         if (func->num != 1 && func->num != 2)
 534                 return;
 535
 536         bus_if = dev_get_drvdata(&func->dev);
 537         if (bus_if) {
 538                 sdiodev = bus_if->bus_priv.sdio;
 539                 brcmf_sdio_remove(sdiodev);
 540
 541                 dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
 542                 dev_set_drvdata(&sdiodev->func[2]->dev, NULL);
 543
 544                 kfree(bus_if);
 545                 kfree(sdiodev);
 546         }
 547
 548         brcmf_dbg(TRACE, "Exit\n");
 549 }
 550
 551 #ifdef CONFIG_PM_SLEEP
 552 static int brcmf_sdio_suspend(struct device *dev)
 553 {
 554         mmc_pm_flag_t sdio_flags;
 555         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 556         struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
 557         int ret = 0;
 558
 559         brcmf_dbg(TRACE, "\n");
 560
 561         atomic_set(&sdiodev->suspend, true);
 562
 563         sdio_flags = sdio_get_host_pm_caps(sdiodev->func[1]);
 564         if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
 565                 brcmf_err("Host can't keep power while suspended\n");
 566                 return -EINVAL;
 567         }
 568
 569         ret = sdio_set_host_pm_flags(sdiodev->func[1], MMC_PM_KEEP_POWER);
 570         if (ret) {
 571                 brcmf_err("Failed to set pm_flags\n");
 572                 return ret;
 573         }
 574
 575         brcmf_sdio_wdtmr_enable(sdiodev, false);
 576
 577         return ret;
 578 }
 579
 580 static int brcmf_sdio_resume(struct device *dev)
 581 {
 582         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 583         struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
 584
 585         brcmf_sdio_wdtmr_enable(sdiodev, true);
 586         atomic_set(&sdiodev->suspend, false);
 587         return 0;
 588 }
 589
 590 static const struct dev_pm_ops brcmf_sdio_pm_ops = {
 591         .suspend        = brcmf_sdio_suspend,
 592         .resume         = brcmf_sdio_resume,
 593 };
 594 #endif  /* CONFIG_PM_SLEEP */
 595
 596 static struct sdio_driver brcmf_sdmmc_driver = {
 597         .probe = brcmf_ops_sdio_probe,
 598         .remove = brcmf_ops_sdio_remove,
 599         .name = "brcmfmac",
 600         .id_table = brcmf_sdmmc_ids,
 601 #ifdef CONFIG_PM_SLEEP
 602         .drv = {
 603                 .pm = &brcmf_sdio_pm_ops,
 604         },
 605 #endif  /* CONFIG_PM_SLEEP */
 606 };
 607
 608 #ifdef CONFIG_BRCMFMAC_SDIO_OOB
 609 static int brcmf_sdio_pd_probe(struct platform_device *pdev)
 610 {
 611         struct resource *res;
 612         struct brcmf_sdio_oobirq *oobirq_entry;
 613         int i, ret;
 614
 615         INIT_LIST_HEAD(&oobirq_lh);
 616
 617         for (i = 0; ; i++) {
 618                 res = platform_get_resource(pdev, IORESOURCE_IRQ, i);
 619                 if (!res)
 620                         break;
 621
 622                 oobirq_entry = kzalloc(sizeof(struct brcmf_sdio_oobirq),
 623                                        GFP_KERNEL);
 624                 if (!oobirq_entry)
 625                         return -ENOMEM;
 626                 oobirq_entry->irq = res->start;
 627                 oobirq_entry->flags = res->flags & IRQF_TRIGGER_MASK;
 628                 list_add_tail(&oobirq_entry->list, &oobirq_lh);
 629         }
 630         if (i == 0)
 631                 return -ENXIO;
 632
 633         ret = sdio_register_driver(&brcmf_sdmmc_driver);
 634
 635         if (ret)
 636                 brcmf_err("sdio_register_driver failed: %d\n", ret);
 637
 638         return ret;
 639 }
 640
 641 static struct platform_driver brcmf_sdio_pd = {
 642         .probe          = brcmf_sdio_pd_probe,
 643         .driver         = {
 644                 .name   = "brcmf_sdio_pd"
 645         }
 646 };
 647
 648 void brcmf_sdio_exit(void)
 649 {
 650         brcmf_dbg(TRACE, "Enter\n");
 651
 652         sdio_unregister_driver(&brcmf_sdmmc_driver);
 653
 654         platform_driver_unregister(&brcmf_sdio_pd);
 655 }
 656
 657 void brcmf_sdio_init(void)
 658 {
 659         int ret;
 660
 661         brcmf_dbg(TRACE, "Enter\n");
 662
 663         ret = platform_driver_register(&brcmf_sdio_pd);
 664
 665         if (ret)
 666                 brcmf_err("platform_driver_register failed: %d\n", ret);
 667 }
 668 #else
 669 void brcmf_sdio_exit(void)
 670 {
 671         brcmf_dbg(TRACE, "Enter\n");
 672
 673         sdio_unregister_driver(&brcmf_sdmmc_driver);
 674 }
 675
 676 void brcmf_sdio_init(void)
 677 {
 678         int ret;
 679
 680         brcmf_dbg(TRACE, "Enter\n");
 681
 682         ret = sdio_register_driver(&brcmf_sdmmc_driver);
 683
 684         if (ret)
 685                 brcmf_err("sdio_register_driver failed: %d\n", ret);
 686 }
 687 #endif          /* CONFIG_BRCMFMAC_SDIO_OOB */