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_4329    0x4329
  46 #define SDIO_DEVICE_ID_BROADCOM_4330    0x4330
  47
  48 #define SDIO_FUNC1_BLOCKSIZE            64
  49 #define SDIO_FUNC2_BLOCKSIZE            512
  50
  51 /* devices we support, null terminated */
  52 static const struct sdio_device_id brcmf_sdmmc_ids[] = {
  53         {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4329)},
  54         {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4330)},
  55         { /* end: all zeroes */ },
  56 };
  57 MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids);
  58
  59 #ifdef CONFIG_BRCMFMAC_SDIO_OOB
  60 static struct list_head oobirq_lh;
  61 struct brcmf_sdio_oobirq {
  62         unsigned int irq;
  63         unsigned long flags;
  64         struct list_head list;
  65 };
  66 #endif          /* CONFIG_BRCMFMAC_SDIO_OOB */
  67
  68 static bool
  69 brcmf_pm_resume_error(struct brcmf_sdio_dev *sdiodev)
  70 {
  71         bool is_err = false;
  72 #ifdef CONFIG_PM_SLEEP
  73         is_err = atomic_read(&sdiodev->suspend);
  74 #endif
  75         return is_err;
  76 }
  77
  78 static void
  79 brcmf_pm_resume_wait(struct brcmf_sdio_dev *sdiodev, wait_queue_head_t *wq)
  80 {
  81 #ifdef CONFIG_PM_SLEEP
  82         int retry = 0;
  83         while (atomic_read(&sdiodev->suspend) && retry++ != 30)
  84                 wait_event_timeout(*wq, false, HZ/100);
  85 #endif
  86 }
  87
  88 static inline int brcmf_sdioh_f0_write_byte(struct brcmf_sdio_dev *sdiodev,
  89                                             uint regaddr, u8 *byte)
  90 {
  91         struct sdio_func *sdfunc = sdiodev->func[0];
  92         int err_ret;
  93
  94         /*
  95          * Can only directly write to some F0 registers.
  96          * Handle F2 enable/disable and Abort command
  97          * as a special case.
  98          */
  99         if (regaddr == SDIO_CCCR_IOEx) {
 100                 sdfunc = sdiodev->func[2];
 101                 if (sdfunc) {
 102                         sdio_claim_host(sdfunc);
 103                         if (*byte & SDIO_FUNC_ENABLE_2) {
 104                                 /* Enable Function 2 */
 105                                 err_ret = sdio_enable_func(sdfunc);
 106                                 if (err_ret)
 107                                         brcmf_dbg(ERROR,
 108                                                   "enable F2 failed:%d\n",
 109                                                   err_ret);
 110                         } else {
 111                                 /* Disable Function 2 */
 112                                 err_ret = sdio_disable_func(sdfunc);
 113                                 if (err_ret)
 114                                         brcmf_dbg(ERROR,
 115                                                   "Disable F2 failed:%d\n",
 116                                                   err_ret);
 117                         }
 118                         sdio_release_host(sdfunc);
 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_claim_host(sdfunc);
 128                 sdio_writeb(sdfunc, *byte, regaddr, &err_ret);
 129                 sdio_release_host(sdfunc);
 130                 kfree(sdfunc);
 131         } else if (regaddr < 0xF0) {
 132                 brcmf_dbg(ERROR, "F0 Wr:0x%02x: write disallowed\n", regaddr);
 133                 err_ret = -EPERM;
 134         } else {
 135                 sdio_claim_host(sdfunc);
 136                 sdio_f0_writeb(sdfunc, *byte, regaddr, &err_ret);
 137                 sdio_release_host(sdfunc);
 138         }
 139
 140         return err_ret;
 141 }
 142
 143 int brcmf_sdioh_request_byte(struct brcmf_sdio_dev *sdiodev, uint rw, uint func,
 144                              uint regaddr, u8 *byte)
 145 {
 146         int err_ret;
 147
 148         brcmf_dbg(INFO, "rw=%d, func=%d, addr=0x%05x\n", rw, func, regaddr);
 149
 150         brcmf_pm_resume_wait(sdiodev, &sdiodev->request_byte_wait);
 151         if (brcmf_pm_resume_error(sdiodev))
 152                 return -EIO;
 153
 154         if (rw && func == 0) {
 155                 /* handle F0 separately */
 156                 err_ret = brcmf_sdioh_f0_write_byte(sdiodev, regaddr, byte);
 157         } else {
 158                 sdio_claim_host(sdiodev->func[func]);
 159                 if (rw) /* CMD52 Write */
 160                         sdio_writeb(sdiodev->func[func], *byte, regaddr,
 161                                     &err_ret);
 162                 else if (func == 0) {
 163                         *byte = sdio_f0_readb(sdiodev->func[func], regaddr,
 164                                               &err_ret);
 165                 } else {
 166                         *byte = sdio_readb(sdiodev->func[func], regaddr,
 167                                            &err_ret);
 168                 }
 169                 sdio_release_host(sdiodev->func[func]);
 170         }
 171
 172         if (err_ret)
 173                 brcmf_dbg(ERROR, "Failed to %s byte F%d:@0x%05x=%02x, Err: %d\n",
 174                           rw ? "write" : "read", func, regaddr, *byte, err_ret);
 175
 176         return err_ret;
 177 }
 178
 179 int brcmf_sdioh_request_word(struct brcmf_sdio_dev *sdiodev,
 180                              uint rw, uint func, uint addr, u32 *word,
 181                              uint nbytes)
 182 {
 183         int err_ret = -EIO;
 184
 185         if (func == 0) {
 186                 brcmf_dbg(ERROR, "Only CMD52 allowed to F0\n");
 187                 return -EINVAL;
 188         }
 189
 190         brcmf_dbg(INFO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n",
 191                   rw, func, addr, nbytes);
 192
 193         brcmf_pm_resume_wait(sdiodev, &sdiodev->request_word_wait);
 194         if (brcmf_pm_resume_error(sdiodev))
 195                 return -EIO;
 196         /* Claim host controller */
 197         sdio_claim_host(sdiodev->func[func]);
 198
 199         if (rw) {               /* CMD52 Write */
 200                 if (nbytes == 4)
 201                         sdio_writel(sdiodev->func[func], *word, addr,
 202                                     &err_ret);
 203                 else if (nbytes == 2)
 204                         sdio_writew(sdiodev->func[func], (*word & 0xFFFF),
 205                                     addr, &err_ret);
 206                 else
 207                         brcmf_dbg(ERROR, "Invalid nbytes: %d\n", nbytes);
 208         } else {                /* CMD52 Read */
 209                 if (nbytes == 4)
 210                         *word = sdio_readl(sdiodev->func[func], addr, &err_ret);
 211                 else if (nbytes == 2)
 212                         *word = sdio_readw(sdiodev->func[func], addr,
 213                                            &err_ret) & 0xFFFF;
 214                 else
 215                         brcmf_dbg(ERROR, "Invalid nbytes: %d\n", nbytes);
 216         }
 217
 218         /* Release host controller */
 219         sdio_release_host(sdiodev->func[func]);
 220
 221         if (err_ret)
 222                 brcmf_dbg(ERROR, "Failed to %s word, Err: 0x%08x\n",
 223                           rw ? "write" : "read", err_ret);
 224
 225         return err_ret;
 226 }
 227
 228 /* precondition: host controller is claimed */
 229 static int
 230 brcmf_sdioh_request_data(struct brcmf_sdio_dev *sdiodev, uint write, bool fifo,
 231                          uint func, uint addr, struct sk_buff *pkt, uint pktlen)
 232 {
 233         int err_ret = 0;
 234
 235         if ((write) && (!fifo)) {
 236                 err_ret = sdio_memcpy_toio(sdiodev->func[func], addr,
 237                                            ((u8 *) (pkt->data)), pktlen);
 238         } else if (write) {
 239                 err_ret = sdio_memcpy_toio(sdiodev->func[func], addr,
 240                                            ((u8 *) (pkt->data)), pktlen);
 241         } else if (fifo) {
 242                 err_ret = sdio_readsb(sdiodev->func[func],
 243                                       ((u8 *) (pkt->data)), addr, pktlen);
 244         } else {
 245                 err_ret = sdio_memcpy_fromio(sdiodev->func[func],
 246                                              ((u8 *) (pkt->data)),
 247                                              addr, pktlen);
 248         }
 249
 250         return err_ret;
 251 }
 252
 253 /*
 254  * This function takes a queue of packets. The packets on the queue
 255  * are assumed to be properly aligned by the caller.
 256  */
 257 int
 258 brcmf_sdioh_request_chain(struct brcmf_sdio_dev *sdiodev, uint fix_inc,
 259                           uint write, uint func, uint addr,
 260                           struct sk_buff_head *pktq)
 261 {
 262         bool fifo = (fix_inc == SDIOH_DATA_FIX);
 263         u32 SGCount = 0;
 264         int err_ret = 0;
 265
 266         struct sk_buff *pkt;
 267
 268         brcmf_dbg(TRACE, "Enter\n");
 269
 270         brcmf_pm_resume_wait(sdiodev, &sdiodev->request_chain_wait);
 271         if (brcmf_pm_resume_error(sdiodev))
 272                 return -EIO;
 273
 274         /* Claim host controller */
 275         sdio_claim_host(sdiodev->func[func]);
 276
 277         skb_queue_walk(pktq, pkt) {
 278                 uint pkt_len = pkt->len;
 279                 pkt_len += 3;
 280                 pkt_len &= 0xFFFFFFFC;
 281
 282                 err_ret = brcmf_sdioh_request_data(sdiodev, write, fifo, func,
 283                                                    addr, pkt, pkt_len);
 284                 if (err_ret) {
 285                         brcmf_dbg(ERROR, "%s FAILED %p[%d], addr=0x%05x, pkt_len=%d, ERR=0x%08x\n",
 286                                   write ? "TX" : "RX", pkt, SGCount, addr,
 287                                   pkt_len, err_ret);
 288                 } else {
 289                         brcmf_dbg(TRACE, "%s xfr'd %p[%d], addr=0x%05x, len=%d\n",
 290                                   write ? "TX" : "RX", pkt, SGCount, addr,
 291                                   pkt_len);
 292                 }
 293                 if (!fifo)
 294                         addr += pkt_len;
 295
 296                 SGCount++;
 297         }
 298
 299         /* Release host controller */
 300         sdio_release_host(sdiodev->func[func]);
 301
 302         brcmf_dbg(TRACE, "Exit\n");
 303         return err_ret;
 304 }
 305
 306 /*
 307  * This function takes a single DMA-able packet.
 308  */
 309 int brcmf_sdioh_request_buffer(struct brcmf_sdio_dev *sdiodev,
 310                                uint fix_inc, uint write, uint func, uint addr,
 311                                struct sk_buff *pkt)
 312 {
 313         int status;
 314         uint pkt_len;
 315         bool fifo = (fix_inc == SDIOH_DATA_FIX);
 316
 317         brcmf_dbg(TRACE, "Enter\n");
 318
 319         if (pkt == NULL)
 320                 return -EINVAL;
 321         pkt_len = pkt->len;
 322
 323         brcmf_pm_resume_wait(sdiodev, &sdiodev->request_buffer_wait);
 324         if (brcmf_pm_resume_error(sdiodev))
 325                 return -EIO;
 326
 327         /* Claim host controller */
 328         sdio_claim_host(sdiodev->func[func]);
 329
 330         pkt_len += 3;
 331         pkt_len &= (uint)~3;
 332
 333         status = brcmf_sdioh_request_data(sdiodev, write, fifo, func,
 334                                            addr, pkt, pkt_len);
 335         if (status) {
 336                 brcmf_dbg(ERROR, "%s FAILED %p, addr=0x%05x, pkt_len=%d, ERR=0x%08x\n",
 337                           write ? "TX" : "RX", pkt, addr, pkt_len, status);
 338         } else {
 339                 brcmf_dbg(TRACE, "%s xfr'd %p, addr=0x%05x, len=%d\n",
 340                           write ? "TX" : "RX", pkt, addr, pkt_len);
 341         }
 342
 343         /* Release host controller */
 344         sdio_release_host(sdiodev->func[func]);
 345
 346         return status;
 347 }
 348
 349 /* Read client card reg */
 350 static int
 351 brcmf_sdioh_card_regread(struct brcmf_sdio_dev *sdiodev, int func, u32 regaddr,
 352                          int regsize, u32 *data)
 353 {
 354
 355         if ((func == 0) || (regsize == 1)) {
 356                 u8 temp = 0;
 357
 358                 brcmf_sdioh_request_byte(sdiodev, SDIOH_READ, func, regaddr,
 359                                          &temp);
 360                 *data = temp;
 361                 *data &= 0xff;
 362                 brcmf_dbg(DATA, "byte read data=0x%02x\n", *data);
 363         } else {
 364                 brcmf_sdioh_request_word(sdiodev, SDIOH_READ, func, regaddr,
 365                                          data, regsize);
 366                 if (regsize == 2)
 367                         *data &= 0xffff;
 368
 369                 brcmf_dbg(DATA, "word read data=0x%08x\n", *data);
 370         }
 371
 372         return SUCCESS;
 373 }
 374
 375 static int brcmf_sdioh_get_cisaddr(struct brcmf_sdio_dev *sdiodev, u32 regaddr)
 376 {
 377         /* read 24 bits and return valid 17 bit addr */
 378         int i;
 379         u32 scratch, regdata;
 380         __le32 scratch_le;
 381         u8 *ptr = (u8 *)&scratch_le;
 382
 383         for (i = 0; i < 3; i++) {
 384                 if ((brcmf_sdioh_card_regread(sdiodev, 0, regaddr, 1,
 385                                 &regdata)) != SUCCESS)
 386                         brcmf_dbg(ERROR, "Can't read!\n");
 387
 388                 *ptr++ = (u8) regdata;
 389                 regaddr++;
 390         }
 391
 392         /* Only the lower 17-bits are valid */
 393         scratch = le32_to_cpu(scratch_le);
 394         scratch &= 0x0001FFFF;
 395         return scratch;
 396 }
 397
 398 static int brcmf_sdioh_enablefuncs(struct brcmf_sdio_dev *sdiodev)
 399 {
 400         int err_ret;
 401         u32 fbraddr;
 402         u8 func;
 403
 404         brcmf_dbg(TRACE, "\n");
 405
 406         /* Get the Card's common CIS address */
 407         sdiodev->func_cis_ptr[0] = brcmf_sdioh_get_cisaddr(sdiodev,
 408                                                            SDIO_CCCR_CIS);
 409         brcmf_dbg(INFO, "Card's Common CIS Ptr = 0x%x\n",
 410                   sdiodev->func_cis_ptr[0]);
 411
 412         /* Get the Card's function CIS (for each function) */
 413         for (fbraddr = SDIO_FBR_BASE(1), func = 1;
 414              func <= sdiodev->num_funcs; func++, fbraddr += SDIOD_FBR_SIZE) {
 415                 sdiodev->func_cis_ptr[func] =
 416                     brcmf_sdioh_get_cisaddr(sdiodev, SDIO_FBR_CIS + fbraddr);
 417                 brcmf_dbg(INFO, "Function %d CIS Ptr = 0x%x\n",
 418                           func, sdiodev->func_cis_ptr[func]);
 419         }
 420
 421         /* Enable Function 1 */
 422         sdio_claim_host(sdiodev->func[1]);
 423         err_ret = sdio_enable_func(sdiodev->func[1]);
 424         sdio_release_host(sdiodev->func[1]);
 425         if (err_ret)
 426                 brcmf_dbg(ERROR, "Failed to enable F1 Err: 0x%08x\n", err_ret);
 427
 428         return false;
 429 }
 430
 431 /*
 432  *      Public entry points & extern's
 433  */
 434 int brcmf_sdioh_attach(struct brcmf_sdio_dev *sdiodev)
 435 {
 436         int err_ret = 0;
 437
 438         brcmf_dbg(TRACE, "\n");
 439
 440         sdiodev->num_funcs = 2;
 441
 442         sdio_claim_host(sdiodev->func[1]);
 443         err_ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE);
 444         sdio_release_host(sdiodev->func[1]);
 445         if (err_ret) {
 446                 brcmf_dbg(ERROR, "Failed to set F1 blocksize\n");
 447                 goto out;
 448         }
 449
 450         sdio_claim_host(sdiodev->func[2]);
 451         err_ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE);
 452         sdio_release_host(sdiodev->func[2]);
 453         if (err_ret) {
 454                 brcmf_dbg(ERROR, "Failed to set F2 blocksize\n");
 455                 goto out;
 456         }
 457
 458         brcmf_sdioh_enablefuncs(sdiodev);
 459
 460 out:
 461         brcmf_dbg(TRACE, "Done\n");
 462         return err_ret;
 463 }
 464
 465 void brcmf_sdioh_detach(struct brcmf_sdio_dev *sdiodev)
 466 {
 467         brcmf_dbg(TRACE, "\n");
 468
 469         /* Disable Function 2 */
 470         sdio_claim_host(sdiodev->func[2]);
 471         sdio_disable_func(sdiodev->func[2]);
 472         sdio_release_host(sdiodev->func[2]);
 473
 474         /* Disable Function 1 */
 475         sdio_claim_host(sdiodev->func[1]);
 476         sdio_disable_func(sdiodev->func[1]);
 477         sdio_release_host(sdiodev->func[1]);
 478
 479 }
 480
 481 #ifdef CONFIG_BRCMFMAC_SDIO_OOB
 482 static int brcmf_sdio_getintrcfg(struct brcmf_sdio_dev *sdiodev)
 483 {
 484         struct brcmf_sdio_oobirq *oobirq_entry;
 485
 486         if (list_empty(&oobirq_lh)) {
 487                 brcmf_dbg(ERROR, "no valid oob irq resource\n");
 488                 return -ENXIO;
 489         }
 490
 491         oobirq_entry = list_first_entry(&oobirq_lh, struct brcmf_sdio_oobirq,
 492                                         list);
 493
 494         sdiodev->irq = oobirq_entry->irq;
 495         sdiodev->irq_flags = oobirq_entry->flags;
 496         list_del(&oobirq_entry->list);
 497         kfree(oobirq_entry);
 498
 499         return 0;
 500 }
 501 #else
 502 static inline int brcmf_sdio_getintrcfg(struct brcmf_sdio_dev *sdiodev)
 503 {
 504         return 0;
 505 }
 506 #endif          /* CONFIG_BRCMFMAC_SDIO_OOB */
 507
 508 static int brcmf_ops_sdio_probe(struct sdio_func *func,
 509                               const struct sdio_device_id *id)
 510 {
 511         int ret = 0;
 512         struct brcmf_sdio_dev *sdiodev;
 513         struct brcmf_bus *bus_if;
 514
 515         brcmf_dbg(TRACE, "Enter\n");
 516         brcmf_dbg(TRACE, "func->class=%x\n", func->class);
 517         brcmf_dbg(TRACE, "sdio_vendor: 0x%04x\n", func->vendor);
 518         brcmf_dbg(TRACE, "sdio_device: 0x%04x\n", func->device);
 519         brcmf_dbg(TRACE, "Function#: 0x%04x\n", func->num);
 520
 521         if (func->num == 1) {
 522                 if (dev_get_drvdata(&func->card->dev)) {
 523                         brcmf_dbg(ERROR, "card private drvdata occupied\n");
 524                         return -ENXIO;
 525                 }
 526                 bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL);
 527                 if (!bus_if)
 528                         return -ENOMEM;
 529                 sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL);
 530                 if (!sdiodev) {
 531                         kfree(bus_if);
 532                         return -ENOMEM;
 533                 }
 534                 sdiodev->func[0] = func;
 535                 sdiodev->func[1] = func;
 536                 sdiodev->bus_if = bus_if;
 537                 bus_if->bus_priv.sdio = sdiodev;
 538                 bus_if->type = SDIO_BUS;
 539                 bus_if->align = BRCMF_SDALIGN;
 540                 dev_set_drvdata(&func->card->dev, sdiodev);
 541
 542                 atomic_set(&sdiodev->suspend, false);
 543                 init_waitqueue_head(&sdiodev->request_byte_wait);
 544                 init_waitqueue_head(&sdiodev->request_word_wait);
 545                 init_waitqueue_head(&sdiodev->request_chain_wait);
 546                 init_waitqueue_head(&sdiodev->request_buffer_wait);
 547         }
 548
 549         if (func->num == 2) {
 550                 sdiodev = dev_get_drvdata(&func->card->dev);
 551                 if ((!sdiodev) || (sdiodev->func[1]->card != func->card))
 552                         return -ENODEV;
 553
 554                 ret = brcmf_sdio_getintrcfg(sdiodev);
 555                 if (ret)
 556                         return ret;
 557                 sdiodev->func[2] = func;
 558
 559                 bus_if = sdiodev->bus_if;
 560                 sdiodev->dev = &func->dev;
 561                 dev_set_drvdata(&func->dev, bus_if);
 562
 563                 brcmf_dbg(TRACE, "F2 found, calling brcmf_sdio_probe...\n");
 564                 ret = brcmf_sdio_probe(sdiodev);
 565         }
 566
 567         return ret;
 568 }
 569
 570 static void brcmf_ops_sdio_remove(struct sdio_func *func)
 571 {
 572         struct brcmf_bus *bus_if;
 573         struct brcmf_sdio_dev *sdiodev;
 574         brcmf_dbg(TRACE, "Enter\n");
 575         brcmf_dbg(INFO, "func->class=%x\n", func->class);
 576         brcmf_dbg(INFO, "sdio_vendor: 0x%04x\n", func->vendor);
 577         brcmf_dbg(INFO, "sdio_device: 0x%04x\n", func->device);
 578         brcmf_dbg(INFO, "Function#: 0x%04x\n", func->num);
 579
 580         if (func->num == 2) {
 581                 bus_if = dev_get_drvdata(&func->dev);
 582                 sdiodev = bus_if->bus_priv.sdio;
 583                 brcmf_dbg(TRACE, "F2 found, calling brcmf_sdio_remove...\n");
 584                 brcmf_sdio_remove(sdiodev);
 585                 dev_set_drvdata(&func->card->dev, NULL);
 586                 dev_set_drvdata(&func->dev, NULL);
 587                 kfree(bus_if);
 588                 kfree(sdiodev);
 589         }
 590 }
 591
 592 #ifdef CONFIG_PM_SLEEP
 593 static int brcmf_sdio_suspend(struct device *dev)
 594 {
 595         mmc_pm_flag_t sdio_flags;
 596         struct sdio_func *func = dev_to_sdio_func(dev);
 597         struct brcmf_sdio_dev *sdiodev = dev_get_drvdata(&func->card->dev);
 598         int ret = 0;
 599
 600         brcmf_dbg(TRACE, "\n");
 601
 602         atomic_set(&sdiodev->suspend, true);
 603
 604         sdio_flags = sdio_get_host_pm_caps(sdiodev->func[1]);
 605         if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
 606                 brcmf_dbg(ERROR, "Host can't keep power while suspended\n");
 607                 return -EINVAL;
 608         }
 609
 610         ret = sdio_set_host_pm_flags(sdiodev->func[1], MMC_PM_KEEP_POWER);
 611         if (ret) {
 612                 brcmf_dbg(ERROR, "Failed to set pm_flags\n");
 613                 return ret;
 614         }
 615
 616         brcmf_sdio_wdtmr_enable(sdiodev, false);
 617
 618         return ret;
 619 }
 620
 621 static int brcmf_sdio_resume(struct device *dev)
 622 {
 623         struct sdio_func *func = dev_to_sdio_func(dev);
 624         struct brcmf_sdio_dev *sdiodev = dev_get_drvdata(&func->card->dev);
 625
 626         brcmf_sdio_wdtmr_enable(sdiodev, true);
 627         atomic_set(&sdiodev->suspend, false);
 628         return 0;
 629 }
 630
 631 static const struct dev_pm_ops brcmf_sdio_pm_ops = {
 632         .suspend        = brcmf_sdio_suspend,
 633         .resume         = brcmf_sdio_resume,
 634 };
 635 #endif  /* CONFIG_PM_SLEEP */
 636
 637 static struct sdio_driver brcmf_sdmmc_driver = {
 638         .probe = brcmf_ops_sdio_probe,
 639         .remove = brcmf_ops_sdio_remove,
 640         .name = "brcmfmac",
 641         .id_table = brcmf_sdmmc_ids,
 642 #ifdef CONFIG_PM_SLEEP
 643         .drv = {
 644                 .pm = &brcmf_sdio_pm_ops,
 645         },
 646 #endif  /* CONFIG_PM_SLEEP */
 647 };
 648
 649 #ifdef CONFIG_BRCMFMAC_SDIO_OOB
 650 static int brcmf_sdio_pd_probe(struct platform_device *pdev)
 651 {
 652         struct resource *res;
 653         struct brcmf_sdio_oobirq *oobirq_entry;
 654         int i, ret;
 655
 656         INIT_LIST_HEAD(&oobirq_lh);
 657
 658         for (i = 0; ; i++) {
 659                 res = platform_get_resource(pdev, IORESOURCE_IRQ, i);
 660                 if (!res)
 661                         break;
 662
 663                 oobirq_entry = kzalloc(sizeof(struct brcmf_sdio_oobirq),
 664                                        GFP_KERNEL);
 665                 oobirq_entry->irq = res->start;
 666                 oobirq_entry->flags = res->flags & IRQF_TRIGGER_MASK;
 667                 list_add_tail(&oobirq_entry->list, &oobirq_lh);
 668         }
 669         if (i == 0)
 670                 return -ENXIO;
 671
 672         ret = sdio_register_driver(&brcmf_sdmmc_driver);
 673
 674         if (ret)
 675                 brcmf_dbg(ERROR, "sdio_register_driver failed: %d\n", ret);
 676
 677         return ret;
 678 }
 679
 680 static struct platform_driver brcmf_sdio_pd = {
 681         .probe          = brcmf_sdio_pd_probe,
 682         .driver         = {
 683                 .name   = "brcmf_sdio_pd"
 684         }
 685 };
 686
 687 void brcmf_sdio_exit(void)
 688 {
 689         brcmf_dbg(TRACE, "Enter\n");
 690
 691         sdio_unregister_driver(&brcmf_sdmmc_driver);
 692
 693         platform_driver_unregister(&brcmf_sdio_pd);
 694 }
 695
 696 void brcmf_sdio_init(void)
 697 {
 698         int ret;
 699
 700         brcmf_dbg(TRACE, "Enter\n");
 701
 702         ret = platform_driver_register(&brcmf_sdio_pd);
 703
 704         if (ret)
 705                 brcmf_dbg(ERROR, "platform_driver_register failed: %d\n", ret);
 706 }
 707 #else
 708 void brcmf_sdio_exit(void)
 709 {
 710         brcmf_dbg(TRACE, "Enter\n");
 711
 712         sdio_unregister_driver(&brcmf_sdmmc_driver);
 713 }
 714
 715 void brcmf_sdio_init(void)
 716 {
 717         int ret;
 718
 719         brcmf_dbg(TRACE, "Enter\n");
 720
 721         ret = sdio_register_driver(&brcmf_sdmmc_driver);
 722
 723         if (ret)
 724                 brcmf_dbg(ERROR, "sdio_register_driver failed: %d\n", ret);
 725 }
 726 #endif          /* CONFIG_BRCMFMAC_SDIO_OOB */