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_dbg(ERROR,
 111                                                   "enable F2 failed:%d\n",
 112                                                   err_ret);
 113                         } else {
 114                                 /* Disable Function 2 */
 115                                 err_ret = sdio_disable_func(sdfunc);
 116                                 if (err_ret)
 117                                         brcmf_dbg(ERROR,
 118                                                   "Disable F2 failed:%d\n",
 119                                                   err_ret);
 120                         }
 121                 }
 122         } else if ((regaddr == SDIO_CCCR_ABORT) ||
 123                    (regaddr == SDIO_CCCR_IENx)) {
 124                 sdfunc = kmemdup(sdiodev->func[0], sizeof(struct sdio_func),
 125                                  GFP_KERNEL);
 126                 if (!sdfunc)
 127                         return -ENOMEM;
 128                 sdfunc->num = 0;
 129                 sdio_writeb(sdfunc, *byte, regaddr, &err_ret);
 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_f0_writeb(sdfunc, *byte, regaddr, &err_ret);
 136         }
 137
 138         return err_ret;
 139 }
 140
 141 int brcmf_sdioh_request_byte(struct brcmf_sdio_dev *sdiodev, uint rw, uint func,
 142                              uint regaddr, u8 *byte)
 143 {
 144         int err_ret;
 145
 146         brcmf_dbg(INFO, "rw=%d, func=%d, addr=0x%05x\n", rw, func, regaddr);
 147
 148         brcmf_pm_resume_wait(sdiodev, &sdiodev->request_byte_wait);
 149         if (brcmf_pm_resume_error(sdiodev))
 150                 return -EIO;
 151
 152         if (rw && func == 0) {
 153                 /* handle F0 separately */
 154                 err_ret = brcmf_sdioh_f0_write_byte(sdiodev, regaddr, byte);
 155         } else {
 156                 if (rw) /* CMD52 Write */
 157                         sdio_writeb(sdiodev->func[func], *byte, regaddr,
 158                                     &err_ret);
 159                 else if (func == 0) {
 160                         *byte = sdio_f0_readb(sdiodev->func[func], regaddr,
 161                                               &err_ret);
 162                 } else {
 163                         *byte = sdio_readb(sdiodev->func[func], regaddr,
 164                                            &err_ret);
 165                 }
 166         }
 167
 168         if (err_ret)
 169                 brcmf_dbg(ERROR, "Failed to %s byte F%d:@0x%05x=%02x, Err: %d\n",
 170                           rw ? "write" : "read", func, regaddr, *byte, err_ret);
 171
 172         return err_ret;
 173 }
 174
 175 int brcmf_sdioh_request_word(struct brcmf_sdio_dev *sdiodev,
 176                              uint rw, uint func, uint addr, u32 *word,
 177                              uint nbytes)
 178 {
 179         int err_ret = -EIO;
 180
 181         if (func == 0) {
 182                 brcmf_dbg(ERROR, "Only CMD52 allowed to F0\n");
 183                 return -EINVAL;
 184         }
 185
 186         brcmf_dbg(INFO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n",
 187                   rw, func, addr, nbytes);
 188
 189         brcmf_pm_resume_wait(sdiodev, &sdiodev->request_word_wait);
 190         if (brcmf_pm_resume_error(sdiodev))
 191                 return -EIO;
 192
 193         if (rw) {               /* CMD52 Write */
 194                 if (nbytes == 4)
 195                         sdio_writel(sdiodev->func[func], *word, addr,
 196                                     &err_ret);
 197                 else if (nbytes == 2)
 198                         sdio_writew(sdiodev->func[func], (*word & 0xFFFF),
 199                                     addr, &err_ret);
 200                 else
 201                         brcmf_dbg(ERROR, "Invalid nbytes: %d\n", nbytes);
 202         } else {                /* CMD52 Read */
 203                 if (nbytes == 4)
 204                         *word = sdio_readl(sdiodev->func[func], addr, &err_ret);
 205                 else if (nbytes == 2)
 206                         *word = sdio_readw(sdiodev->func[func], addr,
 207                                            &err_ret) & 0xFFFF;
 208                 else
 209                         brcmf_dbg(ERROR, "Invalid nbytes: %d\n", nbytes);
 210         }
 211
 212         if (err_ret)
 213                 brcmf_dbg(ERROR, "Failed to %s word, Err: 0x%08x\n",
 214                           rw ? "write" : "read", err_ret);
 215
 216         return err_ret;
 217 }
 218
 219 /* precondition: host controller is claimed */
 220 static int
 221 brcmf_sdioh_request_data(struct brcmf_sdio_dev *sdiodev, uint write, bool fifo,
 222                          uint func, uint addr, struct sk_buff *pkt, uint pktlen)
 223 {
 224         int err_ret = 0;
 225
 226         if ((write) && (!fifo)) {
 227                 err_ret = sdio_memcpy_toio(sdiodev->func[func], addr,
 228                                            ((u8 *) (pkt->data)), pktlen);
 229         } else if (write) {
 230                 err_ret = sdio_memcpy_toio(sdiodev->func[func], addr,
 231                                            ((u8 *) (pkt->data)), pktlen);
 232         } else if (fifo) {
 233                 err_ret = sdio_readsb(sdiodev->func[func],
 234                                       ((u8 *) (pkt->data)), addr, pktlen);
 235         } else {
 236                 err_ret = sdio_memcpy_fromio(sdiodev->func[func],
 237                                              ((u8 *) (pkt->data)),
 238                                              addr, pktlen);
 239         }
 240
 241         return err_ret;
 242 }
 243
 244 /*
 245  * This function takes a queue of packets. The packets on the queue
 246  * are assumed to be properly aligned by the caller.
 247  */
 248 int
 249 brcmf_sdioh_request_chain(struct brcmf_sdio_dev *sdiodev, uint fix_inc,
 250                           uint write, uint func, uint addr,
 251                           struct sk_buff_head *pktq)
 252 {
 253         bool fifo = (fix_inc == SDIOH_DATA_FIX);
 254         u32 SGCount = 0;
 255         int err_ret = 0;
 256
 257         struct sk_buff *pkt;
 258
 259         brcmf_dbg(TRACE, "Enter\n");
 260
 261         brcmf_pm_resume_wait(sdiodev, &sdiodev->request_chain_wait);
 262         if (brcmf_pm_resume_error(sdiodev))
 263                 return -EIO;
 264
 265         skb_queue_walk(pktq, pkt) {
 266                 uint pkt_len = pkt->len;
 267                 pkt_len += 3;
 268                 pkt_len &= 0xFFFFFFFC;
 269
 270                 err_ret = brcmf_sdioh_request_data(sdiodev, write, fifo, func,
 271                                                    addr, pkt, pkt_len);
 272                 if (err_ret) {
 273                         brcmf_dbg(ERROR, "%s FAILED %p[%d], addr=0x%05x, pkt_len=%d, ERR=0x%08x\n",
 274                                   write ? "TX" : "RX", pkt, SGCount, addr,
 275                                   pkt_len, err_ret);
 276                 } else {
 277                         brcmf_dbg(TRACE, "%s xfr'd %p[%d], addr=0x%05x, len=%d\n",
 278                                   write ? "TX" : "RX", pkt, SGCount, addr,
 279                                   pkt_len);
 280                 }
 281                 if (!fifo)
 282                         addr += pkt_len;
 283
 284                 SGCount++;
 285         }
 286
 287         brcmf_dbg(TRACE, "Exit\n");
 288         return err_ret;
 289 }
 290
 291 /*
 292  * This function takes a single DMA-able packet.
 293  */
 294 int brcmf_sdioh_request_buffer(struct brcmf_sdio_dev *sdiodev,
 295                                uint fix_inc, uint write, uint func, uint addr,
 296                                struct sk_buff *pkt)
 297 {
 298         int status;
 299         uint pkt_len;
 300         bool fifo = (fix_inc == SDIOH_DATA_FIX);
 301
 302         brcmf_dbg(TRACE, "Enter\n");
 303
 304         if (pkt == NULL)
 305                 return -EINVAL;
 306         pkt_len = pkt->len;
 307
 308         brcmf_pm_resume_wait(sdiodev, &sdiodev->request_buffer_wait);
 309         if (brcmf_pm_resume_error(sdiodev))
 310                 return -EIO;
 311
 312         pkt_len += 3;
 313         pkt_len &= (uint)~3;
 314
 315         status = brcmf_sdioh_request_data(sdiodev, write, fifo, func,
 316                                            addr, pkt, pkt_len);
 317         if (status) {
 318                 brcmf_dbg(ERROR, "%s FAILED %p, addr=0x%05x, pkt_len=%d, ERR=0x%08x\n",
 319                           write ? "TX" : "RX", pkt, addr, pkt_len, status);
 320         } else {
 321                 brcmf_dbg(TRACE, "%s xfr'd %p, addr=0x%05x, len=%d\n",
 322                           write ? "TX" : "RX", pkt, addr, pkt_len);
 323         }
 324
 325         return status;
 326 }
 327
 328 static int brcmf_sdioh_get_cisaddr(struct brcmf_sdio_dev *sdiodev, u32 regaddr)
 329 {
 330         /* read 24 bits and return valid 17 bit addr */
 331         int i, ret;
 332         u32 scratch, regdata;
 333         __le32 scratch_le;
 334         u8 *ptr = (u8 *)&scratch_le;
 335
 336         for (i = 0; i < 3; i++) {
 337                 regdata = brcmf_sdio_regrl(sdiodev, regaddr, &ret);
 338                 if (ret != 0)
 339                         brcmf_dbg(ERROR, "Can't read!\n");
 340
 341                 *ptr++ = (u8) regdata;
 342                 regaddr++;
 343         }
 344
 345         /* Only the lower 17-bits are valid */
 346         scratch = le32_to_cpu(scratch_le);
 347         scratch &= 0x0001FFFF;
 348         return scratch;
 349 }
 350
 351 static int brcmf_sdioh_enablefuncs(struct brcmf_sdio_dev *sdiodev)
 352 {
 353         int err_ret;
 354         u32 fbraddr;
 355         u8 func;
 356
 357         brcmf_dbg(TRACE, "\n");
 358
 359         /* Get the Card's common CIS address */
 360         sdiodev->func_cis_ptr[0] = brcmf_sdioh_get_cisaddr(sdiodev,
 361                                                            SDIO_CCCR_CIS);
 362         brcmf_dbg(INFO, "Card's Common CIS Ptr = 0x%x\n",
 363                   sdiodev->func_cis_ptr[0]);
 364
 365         /* Get the Card's function CIS (for each function) */
 366         for (fbraddr = SDIO_FBR_BASE(1), func = 1;
 367              func <= sdiodev->num_funcs; func++, fbraddr += SDIOD_FBR_SIZE) {
 368                 sdiodev->func_cis_ptr[func] =
 369                     brcmf_sdioh_get_cisaddr(sdiodev, SDIO_FBR_CIS + fbraddr);
 370                 brcmf_dbg(INFO, "Function %d CIS Ptr = 0x%x\n",
 371                           func, sdiodev->func_cis_ptr[func]);
 372         }
 373
 374         /* Enable Function 1 */
 375         sdio_claim_host(sdiodev->func[1]);
 376         err_ret = sdio_enable_func(sdiodev->func[1]);
 377         sdio_release_host(sdiodev->func[1]);
 378         if (err_ret)
 379                 brcmf_dbg(ERROR, "Failed to enable F1 Err: 0x%08x\n", err_ret);
 380
 381         return false;
 382 }
 383
 384 /*
 385  *      Public entry points & extern's
 386  */
 387 int brcmf_sdioh_attach(struct brcmf_sdio_dev *sdiodev)
 388 {
 389         int err_ret = 0;
 390
 391         brcmf_dbg(TRACE, "\n");
 392
 393         sdiodev->num_funcs = 2;
 394
 395         sdio_claim_host(sdiodev->func[1]);
 396         err_ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE);
 397         sdio_release_host(sdiodev->func[1]);
 398         if (err_ret) {
 399                 brcmf_dbg(ERROR, "Failed to set F1 blocksize\n");
 400                 goto out;
 401         }
 402
 403         sdio_claim_host(sdiodev->func[2]);
 404         err_ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE);
 405         sdio_release_host(sdiodev->func[2]);
 406         if (err_ret) {
 407                 brcmf_dbg(ERROR, "Failed to set F2 blocksize\n");
 408                 goto out;
 409         }
 410
 411         brcmf_sdioh_enablefuncs(sdiodev);
 412
 413 out:
 414         brcmf_dbg(TRACE, "Done\n");
 415         return err_ret;
 416 }
 417
 418 void brcmf_sdioh_detach(struct brcmf_sdio_dev *sdiodev)
 419 {
 420         brcmf_dbg(TRACE, "\n");
 421
 422         /* Disable Function 2 */
 423         sdio_claim_host(sdiodev->func[2]);
 424         sdio_disable_func(sdiodev->func[2]);
 425         sdio_release_host(sdiodev->func[2]);
 426
 427         /* Disable Function 1 */
 428         sdio_claim_host(sdiodev->func[1]);
 429         sdio_disable_func(sdiodev->func[1]);
 430         sdio_release_host(sdiodev->func[1]);
 431
 432 }
 433
 434 #ifdef CONFIG_BRCMFMAC_SDIO_OOB
 435 static int brcmf_sdio_getintrcfg(struct brcmf_sdio_dev *sdiodev)
 436 {
 437         struct brcmf_sdio_oobirq *oobirq_entry;
 438
 439         if (list_empty(&oobirq_lh)) {
 440                 brcmf_dbg(ERROR, "no valid oob irq resource\n");
 441                 return -ENXIO;
 442         }
 443
 444         oobirq_entry = list_first_entry(&oobirq_lh, struct brcmf_sdio_oobirq,
 445                                         list);
 446
 447         sdiodev->irq = oobirq_entry->irq;
 448         sdiodev->irq_flags = oobirq_entry->flags;
 449         list_del(&oobirq_entry->list);
 450         kfree(oobirq_entry);
 451
 452         return 0;
 453 }
 454 #else
 455 static inline int brcmf_sdio_getintrcfg(struct brcmf_sdio_dev *sdiodev)
 456 {
 457         return 0;
 458 }
 459 #endif          /* CONFIG_BRCMFMAC_SDIO_OOB */
 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
 468         brcmf_dbg(TRACE, "Enter\n");
 469         brcmf_dbg(TRACE, "func->class=%x\n", func->class);
 470         brcmf_dbg(TRACE, "sdio_vendor: 0x%04x\n", func->vendor);
 471         brcmf_dbg(TRACE, "sdio_device: 0x%04x\n", func->device);
 472         brcmf_dbg(TRACE, "Function#: 0x%04x\n", func->num);
 473
 474         if (func->num == 1) {
 475                 if (dev_get_drvdata(&func->card->dev)) {
 476                         brcmf_dbg(ERROR, "card private drvdata occupied\n");
 477                         return -ENXIO;
 478                 }
 479                 bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL);
 480                 if (!bus_if)
 481                         return -ENOMEM;
 482                 sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL);
 483                 if (!sdiodev) {
 484                         kfree(bus_if);
 485                         return -ENOMEM;
 486                 }
 487                 sdiodev->func[0] = func;
 488                 sdiodev->func[1] = func;
 489                 sdiodev->bus_if = bus_if;
 490                 bus_if->bus_priv.sdio = sdiodev;
 491                 bus_if->type = SDIO_BUS;
 492                 bus_if->align = BRCMF_SDALIGN;
 493                 dev_set_drvdata(&func->card->dev, sdiodev);
 494
 495                 atomic_set(&sdiodev->suspend, false);
 496                 init_waitqueue_head(&sdiodev->request_byte_wait);
 497                 init_waitqueue_head(&sdiodev->request_word_wait);
 498                 init_waitqueue_head(&sdiodev->request_chain_wait);
 499                 init_waitqueue_head(&sdiodev->request_buffer_wait);
 500         }
 501
 502         if (func->num == 2) {
 503                 sdiodev = dev_get_drvdata(&func->card->dev);
 504                 if ((!sdiodev) || (sdiodev->func[1]->card != func->card))
 505                         return -ENODEV;
 506
 507                 ret = brcmf_sdio_getintrcfg(sdiodev);
 508                 if (ret)
 509                         return ret;
 510                 sdiodev->func[2] = func;
 511
 512                 bus_if = sdiodev->bus_if;
 513                 sdiodev->dev = &func->dev;
 514                 dev_set_drvdata(&func->dev, bus_if);
 515
 516                 brcmf_dbg(TRACE, "F2 found, calling brcmf_sdio_probe...\n");
 517                 ret = brcmf_sdio_probe(sdiodev);
 518         }
 519
 520         return ret;
 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         brcmf_dbg(TRACE, "Enter\n");
 528         brcmf_dbg(INFO, "func->class=%x\n", func->class);
 529         brcmf_dbg(INFO, "sdio_vendor: 0x%04x\n", func->vendor);
 530         brcmf_dbg(INFO, "sdio_device: 0x%04x\n", func->device);
 531         brcmf_dbg(INFO, "Function#: 0x%04x\n", func->num);
 532
 533         if (func->num == 2) {
 534                 bus_if = dev_get_drvdata(&func->dev);
 535                 sdiodev = bus_if->bus_priv.sdio;
 536                 brcmf_dbg(TRACE, "F2 found, calling brcmf_sdio_remove...\n");
 537                 brcmf_sdio_remove(sdiodev);
 538                 dev_set_drvdata(&func->card->dev, NULL);
 539                 dev_set_drvdata(&func->dev, NULL);
 540                 kfree(bus_if);
 541                 kfree(sdiodev);
 542         }
 543 }
 544
 545 #ifdef CONFIG_PM_SLEEP
 546 static int brcmf_sdio_suspend(struct device *dev)
 547 {
 548         mmc_pm_flag_t sdio_flags;
 549         struct sdio_func *func = dev_to_sdio_func(dev);
 550         struct brcmf_sdio_dev *sdiodev = dev_get_drvdata(&func->card->dev);
 551         int ret = 0;
 552
 553         brcmf_dbg(TRACE, "\n");
 554
 555         atomic_set(&sdiodev->suspend, true);
 556
 557         sdio_flags = sdio_get_host_pm_caps(sdiodev->func[1]);
 558         if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
 559                 brcmf_dbg(ERROR, "Host can't keep power while suspended\n");
 560                 return -EINVAL;
 561         }
 562
 563         ret = sdio_set_host_pm_flags(sdiodev->func[1], MMC_PM_KEEP_POWER);
 564         if (ret) {
 565                 brcmf_dbg(ERROR, "Failed to set pm_flags\n");
 566                 return ret;
 567         }
 568
 569         brcmf_sdio_wdtmr_enable(sdiodev, false);
 570
 571         return ret;
 572 }
 573
 574 static int brcmf_sdio_resume(struct device *dev)
 575 {
 576         struct sdio_func *func = dev_to_sdio_func(dev);
 577         struct brcmf_sdio_dev *sdiodev = dev_get_drvdata(&func->card->dev);
 578
 579         brcmf_sdio_wdtmr_enable(sdiodev, true);
 580         atomic_set(&sdiodev->suspend, false);
 581         return 0;
 582 }
 583
 584 static const struct dev_pm_ops brcmf_sdio_pm_ops = {
 585         .suspend        = brcmf_sdio_suspend,
 586         .resume         = brcmf_sdio_resume,
 587 };
 588 #endif  /* CONFIG_PM_SLEEP */
 589
 590 static struct sdio_driver brcmf_sdmmc_driver = {
 591         .probe = brcmf_ops_sdio_probe,
 592         .remove = brcmf_ops_sdio_remove,
 593         .name = "brcmfmac",
 594         .id_table = brcmf_sdmmc_ids,
 595 #ifdef CONFIG_PM_SLEEP
 596         .drv = {
 597                 .pm = &brcmf_sdio_pm_ops,
 598         },
 599 #endif  /* CONFIG_PM_SLEEP */
 600 };
 601
 602 #ifdef CONFIG_BRCMFMAC_SDIO_OOB
 603 static int brcmf_sdio_pd_probe(struct platform_device *pdev)
 604 {
 605         struct resource *res;
 606         struct brcmf_sdio_oobirq *oobirq_entry;
 607         int i, ret;
 608
 609         INIT_LIST_HEAD(&oobirq_lh);
 610
 611         for (i = 0; ; i++) {
 612                 res = platform_get_resource(pdev, IORESOURCE_IRQ, i);
 613                 if (!res)
 614                         break;
 615
 616                 oobirq_entry = kzalloc(sizeof(struct brcmf_sdio_oobirq),
 617                                        GFP_KERNEL);
 618                 if (!oobirq_entry)
 619                         return -ENOMEM;
 620                 oobirq_entry->irq = res->start;
 621                 oobirq_entry->flags = res->flags & IRQF_TRIGGER_MASK;
 622                 list_add_tail(&oobirq_entry->list, &oobirq_lh);
 623         }
 624         if (i == 0)
 625                 return -ENXIO;
 626
 627         ret = sdio_register_driver(&brcmf_sdmmc_driver);
 628
 629         if (ret)
 630                 brcmf_dbg(ERROR, "sdio_register_driver failed: %d\n", ret);
 631
 632         return ret;
 633 }
 634
 635 static struct platform_driver brcmf_sdio_pd = {
 636         .probe          = brcmf_sdio_pd_probe,
 637         .driver         = {
 638                 .name   = "brcmf_sdio_pd"
 639         }
 640 };
 641
 642 void brcmf_sdio_exit(void)
 643 {
 644         brcmf_dbg(TRACE, "Enter\n");
 645
 646         sdio_unregister_driver(&brcmf_sdmmc_driver);
 647
 648         platform_driver_unregister(&brcmf_sdio_pd);
 649 }
 650
 651 void brcmf_sdio_init(void)
 652 {
 653         int ret;
 654
 655         brcmf_dbg(TRACE, "Enter\n");
 656
 657         ret = platform_driver_register(&brcmf_sdio_pd);
 658
 659         if (ret)
 660                 brcmf_dbg(ERROR, "platform_driver_register failed: %d\n", ret);
 661 }
 662 #else
 663 void brcmf_sdio_exit(void)
 664 {
 665         brcmf_dbg(TRACE, "Enter\n");
 666
 667         sdio_unregister_driver(&brcmf_sdmmc_driver);
 668 }
 669
 670 void brcmf_sdio_init(void)
 671 {
 672         int ret;
 673
 674         brcmf_dbg(TRACE, "Enter\n");
 675
 676         ret = sdio_register_driver(&brcmf_sdmmc_driver);
 677
 678         if (ret)
 679                 brcmf_dbg(ERROR, "sdio_register_driver failed: %d\n", ret);
 680 }
 681 #endif          /* CONFIG_BRCMFMAC_SDIO_OOB */