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 #define SDIO_DEVICE_ID_BROADCOM_4334    0x4334
  48
  49 #define SDIO_FUNC1_BLOCKSIZE            64
  50 #define SDIO_FUNC2_BLOCKSIZE            512
  51
  52 /* devices we support, null terminated */
  53 static const struct sdio_device_id brcmf_sdmmc_ids[] = {
  54         {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4329)},
  55         {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4330)},
  56         {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4334)},
  57         { /* end: all zeroes */ },
  58 };
  59 MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids);
  60
  61 #ifdef CONFIG_BRCMFMAC_SDIO_OOB
  62 static struct list_head oobirq_lh;
  63 struct brcmf_sdio_oobirq {
  64         unsigned int irq;
  65         unsigned long flags;
  66         struct list_head list;
  67 };
  68 #endif          /* CONFIG_BRCMFMAC_SDIO_OOB */
  69
  70 static bool
  71 brcmf_pm_resume_error(struct brcmf_sdio_dev *sdiodev)
  72 {
  73         bool is_err = false;
  74 #ifdef CONFIG_PM_SLEEP
  75         is_err = atomic_read(&sdiodev->suspend);
  76 #endif
  77         return is_err;
  78 }
  79
  80 static void
  81 brcmf_pm_resume_wait(struct brcmf_sdio_dev *sdiodev, wait_queue_head_t *wq)
  82 {
  83 #ifdef CONFIG_PM_SLEEP
  84         int retry = 0;
  85         while (atomic_read(&sdiodev->suspend) && retry++ != 30)
  86                 wait_event_timeout(*wq, false, HZ/100);
  87 #endif
  88 }
  89
  90 static inline int brcmf_sdioh_f0_write_byte(struct brcmf_sdio_dev *sdiodev,
  91                                             uint regaddr, u8 *byte)
  92 {
  93         struct sdio_func *sdfunc = sdiodev->func[0];
  94         int err_ret;
  95
  96         /*
  97          * Can only directly write to some F0 registers.
  98          * Handle F2 enable/disable and Abort command
  99          * as a special case.
 100          */
 101         if (regaddr == SDIO_CCCR_IOEx) {
 102                 sdfunc = sdiodev->func[2];
 103                 if (sdfunc) {
 104                         sdio_claim_host(sdfunc);
 105                         if (*byte & SDIO_FUNC_ENABLE_2) {
 106                                 /* Enable Function 2 */
 107                                 err_ret = sdio_enable_func(sdfunc);
 108                                 if (err_ret)
 109                                         brcmf_dbg(ERROR,
 110                                                   "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_dbg(ERROR,
 117                                                   "Disable F2 failed:%d\n",
 118                                                   err_ret);
 119                         }
 120                         sdio_release_host(sdfunc);
 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_claim_host(sdfunc);
 130                 sdio_writeb(sdfunc, *byte, regaddr, &err_ret);
 131                 sdio_release_host(sdfunc);
 132                 kfree(sdfunc);
 133         } else if (regaddr < 0xF0) {
 134                 brcmf_dbg(ERROR, "F0 Wr:0x%02x: write disallowed\n", regaddr);
 135                 err_ret = -EPERM;
 136         } else {
 137                 sdio_claim_host(sdfunc);
 138                 sdio_f0_writeb(sdfunc, *byte, regaddr, &err_ret);
 139                 sdio_release_host(sdfunc);
 140         }
 141
 142         return err_ret;
 143 }
 144
 145 int brcmf_sdioh_request_byte(struct brcmf_sdio_dev *sdiodev, uint rw, uint func,
 146                              uint regaddr, u8 *byte)
 147 {
 148         int err_ret;
 149
 150         brcmf_dbg(INFO, "rw=%d, func=%d, addr=0x%05x\n", rw, func, regaddr);
 151
 152         brcmf_pm_resume_wait(sdiodev, &sdiodev->request_byte_wait);
 153         if (brcmf_pm_resume_error(sdiodev))
 154                 return -EIO;
 155
 156         if (rw && func == 0) {
 157                 /* handle F0 separately */
 158                 err_ret = brcmf_sdioh_f0_write_byte(sdiodev, regaddr, byte);
 159         } else {
 160                 sdio_claim_host(sdiodev->func[func]);
 161                 if (rw) /* CMD52 Write */
 162                         sdio_writeb(sdiodev->func[func], *byte, regaddr,
 163                                     &err_ret);
 164                 else if (func == 0) {
 165                         *byte = sdio_f0_readb(sdiodev->func[func], regaddr,
 166                                               &err_ret);
 167                 } else {
 168                         *byte = sdio_readb(sdiodev->func[func], regaddr,
 169                                            &err_ret);
 170                 }
 171                 sdio_release_host(sdiodev->func[func]);
 172         }
 173
 174         if (err_ret)
 175                 brcmf_dbg(ERROR, "Failed to %s byte F%d:@0x%05x=%02x, Err: %d\n",
 176                           rw ? "write" : "read", func, regaddr, *byte, err_ret);
 177
 178         return err_ret;
 179 }
 180
 181 int brcmf_sdioh_request_word(struct brcmf_sdio_dev *sdiodev,
 182                              uint rw, uint func, uint addr, u32 *word,
 183                              uint nbytes)
 184 {
 185         int err_ret = -EIO;
 186
 187         if (func == 0) {
 188                 brcmf_dbg(ERROR, "Only CMD52 allowed to F0\n");
 189                 return -EINVAL;
 190         }
 191
 192         brcmf_dbg(INFO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n",
 193                   rw, func, addr, nbytes);
 194
 195         brcmf_pm_resume_wait(sdiodev, &sdiodev->request_word_wait);
 196         if (brcmf_pm_resume_error(sdiodev))
 197                 return -EIO;
 198         /* Claim host controller */
 199         sdio_claim_host(sdiodev->func[func]);
 200
 201         if (rw) {               /* CMD52 Write */
 202                 if (nbytes == 4)
 203                         sdio_writel(sdiodev->func[func], *word, addr,
 204                                     &err_ret);
 205                 else if (nbytes == 2)
 206                         sdio_writew(sdiodev->func[func], (*word & 0xFFFF),
 207                                     addr, &err_ret);
 208                 else
 209                         brcmf_dbg(ERROR, "Invalid nbytes: %d\n", nbytes);
 210         } else {                /* CMD52 Read */
 211                 if (nbytes == 4)
 212                         *word = sdio_readl(sdiodev->func[func], addr, &err_ret);
 213                 else if (nbytes == 2)
 214                         *word = sdio_readw(sdiodev->func[func], addr,
 215                                            &err_ret) & 0xFFFF;
 216                 else
 217                         brcmf_dbg(ERROR, "Invalid nbytes: %d\n", nbytes);
 218         }
 219
 220         /* Release host controller */
 221         sdio_release_host(sdiodev->func[func]);
 222
 223         if (err_ret)
 224                 brcmf_dbg(ERROR, "Failed to %s word, Err: 0x%08x\n",
 225                           rw ? "write" : "read", err_ret);
 226
 227         return err_ret;
 228 }
 229
 230 /* precondition: host controller is claimed */
 231 static int
 232 brcmf_sdioh_request_data(struct brcmf_sdio_dev *sdiodev, uint write, bool fifo,
 233                          uint func, uint addr, struct sk_buff *pkt, uint pktlen)
 234 {
 235         int err_ret = 0;
 236
 237         if ((write) && (!fifo)) {
 238                 err_ret = sdio_memcpy_toio(sdiodev->func[func], addr,
 239                                            ((u8 *) (pkt->data)), pktlen);
 240         } else if (write) {
 241                 err_ret = sdio_memcpy_toio(sdiodev->func[func], addr,
 242                                            ((u8 *) (pkt->data)), pktlen);
 243         } else if (fifo) {
 244                 err_ret = sdio_readsb(sdiodev->func[func],
 245                                       ((u8 *) (pkt->data)), addr, pktlen);
 246         } else {
 247                 err_ret = sdio_memcpy_fromio(sdiodev->func[func],
 248                                              ((u8 *) (pkt->data)),
 249                                              addr, pktlen);
 250         }
 251
 252         return err_ret;
 253 }
 254
 255 /*
 256  * This function takes a queue of packets. The packets on the queue
 257  * are assumed to be properly aligned by the caller.
 258  */
 259 int
 260 brcmf_sdioh_request_chain(struct brcmf_sdio_dev *sdiodev, uint fix_inc,
 261                           uint write, uint func, uint addr,
 262                           struct sk_buff_head *pktq)
 263 {
 264         bool fifo = (fix_inc == SDIOH_DATA_FIX);
 265         u32 SGCount = 0;
 266         int err_ret = 0;
 267
 268         struct sk_buff *pkt;
 269
 270         brcmf_dbg(TRACE, "Enter\n");
 271
 272         brcmf_pm_resume_wait(sdiodev, &sdiodev->request_chain_wait);
 273         if (brcmf_pm_resume_error(sdiodev))
 274                 return -EIO;
 275
 276         /* Claim host controller */
 277         sdio_claim_host(sdiodev->func[func]);
 278
 279         skb_queue_walk(pktq, pkt) {
 280                 uint pkt_len = pkt->len;
 281                 pkt_len += 3;
 282                 pkt_len &= 0xFFFFFFFC;
 283
 284                 err_ret = brcmf_sdioh_request_data(sdiodev, write, fifo, func,
 285                                                    addr, pkt, pkt_len);
 286                 if (err_ret) {
 287                         brcmf_dbg(ERROR, "%s FAILED %p[%d], addr=0x%05x, pkt_len=%d, ERR=0x%08x\n",
 288                                   write ? "TX" : "RX", pkt, SGCount, addr,
 289                                   pkt_len, err_ret);
 290                 } else {
 291                         brcmf_dbg(TRACE, "%s xfr'd %p[%d], addr=0x%05x, len=%d\n",
 292                                   write ? "TX" : "RX", pkt, SGCount, addr,
 293                                   pkt_len);
 294                 }
 295                 if (!fifo)
 296                         addr += pkt_len;
 297
 298                 SGCount++;
 299         }
 300
 301         /* Release host controller */
 302         sdio_release_host(sdiodev->func[func]);
 303
 304         brcmf_dbg(TRACE, "Exit\n");
 305         return err_ret;
 306 }
 307
 308 /*
 309  * This function takes a single DMA-able packet.
 310  */
 311 int brcmf_sdioh_request_buffer(struct brcmf_sdio_dev *sdiodev,
 312                                uint fix_inc, uint write, uint func, uint addr,
 313                                struct sk_buff *pkt)
 314 {
 315         int status;
 316         uint pkt_len;
 317         bool fifo = (fix_inc == SDIOH_DATA_FIX);
 318
 319         brcmf_dbg(TRACE, "Enter\n");
 320
 321         if (pkt == NULL)
 322                 return -EINVAL;
 323         pkt_len = pkt->len;
 324
 325         brcmf_pm_resume_wait(sdiodev, &sdiodev->request_buffer_wait);
 326         if (brcmf_pm_resume_error(sdiodev))
 327                 return -EIO;
 328
 329         /* Claim host controller */
 330         sdio_claim_host(sdiodev->func[func]);
 331
 332         pkt_len += 3;
 333         pkt_len &= (uint)~3;
 334
 335         status = brcmf_sdioh_request_data(sdiodev, write, fifo, func,
 336                                            addr, pkt, pkt_len);
 337         if (status) {
 338                 brcmf_dbg(ERROR, "%s FAILED %p, addr=0x%05x, pkt_len=%d, ERR=0x%08x\n",
 339                           write ? "TX" : "RX", pkt, addr, pkt_len, status);
 340         } else {
 341                 brcmf_dbg(TRACE, "%s xfr'd %p, addr=0x%05x, len=%d\n",
 342                           write ? "TX" : "RX", pkt, addr, pkt_len);
 343         }
 344
 345         /* Release host controller */
 346         sdio_release_host(sdiodev->func[func]);
 347
 348         return status;
 349 }
 350
 351 static int brcmf_sdioh_get_cisaddr(struct brcmf_sdio_dev *sdiodev, u32 regaddr)
 352 {
 353         /* read 24 bits and return valid 17 bit addr */
 354         int i, ret;
 355         u32 scratch, regdata;
 356         __le32 scratch_le;
 357         u8 *ptr = (u8 *)&scratch_le;
 358
 359         for (i = 0; i < 3; i++) {
 360                 regdata = brcmf_sdio_regrl(sdiodev, regaddr, &ret);
 361                 if (ret != 0)
 362                         brcmf_dbg(ERROR, "Can't read!\n");
 363
 364                 *ptr++ = (u8) regdata;
 365                 regaddr++;
 366         }
 367
 368         /* Only the lower 17-bits are valid */
 369         scratch = le32_to_cpu(scratch_le);
 370         scratch &= 0x0001FFFF;
 371         return scratch;
 372 }
 373
 374 static int brcmf_sdioh_enablefuncs(struct brcmf_sdio_dev *sdiodev)
 375 {
 376         int err_ret;
 377         u32 fbraddr;
 378         u8 func;
 379
 380         brcmf_dbg(TRACE, "\n");
 381
 382         /* Get the Card's common CIS address */
 383         sdiodev->func_cis_ptr[0] = brcmf_sdioh_get_cisaddr(sdiodev,
 384                                                            SDIO_CCCR_CIS);
 385         brcmf_dbg(INFO, "Card's Common CIS Ptr = 0x%x\n",
 386                   sdiodev->func_cis_ptr[0]);
 387
 388         /* Get the Card's function CIS (for each function) */
 389         for (fbraddr = SDIO_FBR_BASE(1), func = 1;
 390              func <= sdiodev->num_funcs; func++, fbraddr += SDIOD_FBR_SIZE) {
 391                 sdiodev->func_cis_ptr[func] =
 392                     brcmf_sdioh_get_cisaddr(sdiodev, SDIO_FBR_CIS + fbraddr);
 393                 brcmf_dbg(INFO, "Function %d CIS Ptr = 0x%x\n",
 394                           func, sdiodev->func_cis_ptr[func]);
 395         }
 396
 397         /* Enable Function 1 */
 398         sdio_claim_host(sdiodev->func[1]);
 399         err_ret = sdio_enable_func(sdiodev->func[1]);
 400         sdio_release_host(sdiodev->func[1]);
 401         if (err_ret)
 402                 brcmf_dbg(ERROR, "Failed to enable F1 Err: 0x%08x\n", err_ret);
 403
 404         return false;
 405 }
 406
 407 /*
 408  *      Public entry points & extern's
 409  */
 410 int brcmf_sdioh_attach(struct brcmf_sdio_dev *sdiodev)
 411 {
 412         int err_ret = 0;
 413
 414         brcmf_dbg(TRACE, "\n");
 415
 416         sdiodev->num_funcs = 2;
 417
 418         sdio_claim_host(sdiodev->func[1]);
 419         err_ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE);
 420         sdio_release_host(sdiodev->func[1]);
 421         if (err_ret) {
 422                 brcmf_dbg(ERROR, "Failed to set F1 blocksize\n");
 423                 goto out;
 424         }
 425
 426         sdio_claim_host(sdiodev->func[2]);
 427         err_ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE);
 428         sdio_release_host(sdiodev->func[2]);
 429         if (err_ret) {
 430                 brcmf_dbg(ERROR, "Failed to set F2 blocksize\n");
 431                 goto out;
 432         }
 433
 434         brcmf_sdioh_enablefuncs(sdiodev);
 435
 436 out:
 437         brcmf_dbg(TRACE, "Done\n");
 438         return err_ret;
 439 }
 440
 441 void brcmf_sdioh_detach(struct brcmf_sdio_dev *sdiodev)
 442 {
 443         brcmf_dbg(TRACE, "\n");
 444
 445         /* Disable Function 2 */
 446         sdio_claim_host(sdiodev->func[2]);
 447         sdio_disable_func(sdiodev->func[2]);
 448         sdio_release_host(sdiodev->func[2]);
 449
 450         /* Disable Function 1 */
 451         sdio_claim_host(sdiodev->func[1]);
 452         sdio_disable_func(sdiodev->func[1]);
 453         sdio_release_host(sdiodev->func[1]);
 454
 455 }
 456
 457 #ifdef CONFIG_BRCMFMAC_SDIO_OOB
 458 static int brcmf_sdio_getintrcfg(struct brcmf_sdio_dev *sdiodev)
 459 {
 460         struct brcmf_sdio_oobirq *oobirq_entry;
 461
 462         if (list_empty(&oobirq_lh)) {
 463                 brcmf_dbg(ERROR, "no valid oob irq resource\n");
 464                 return -ENXIO;
 465         }
 466
 467         oobirq_entry = list_first_entry(&oobirq_lh, struct brcmf_sdio_oobirq,
 468                                         list);
 469
 470         sdiodev->irq = oobirq_entry->irq;
 471         sdiodev->irq_flags = oobirq_entry->flags;
 472         list_del(&oobirq_entry->list);
 473         kfree(oobirq_entry);
 474
 475         return 0;
 476 }
 477 #else
 478 static inline int brcmf_sdio_getintrcfg(struct brcmf_sdio_dev *sdiodev)
 479 {
 480         return 0;
 481 }
 482 #endif          /* CONFIG_BRCMFMAC_SDIO_OOB */
 483
 484 static int brcmf_ops_sdio_probe(struct sdio_func *func,
 485                               const struct sdio_device_id *id)
 486 {
 487         int ret = 0;
 488         struct brcmf_sdio_dev *sdiodev;
 489         struct brcmf_bus *bus_if;
 490
 491         brcmf_dbg(TRACE, "Enter\n");
 492         brcmf_dbg(TRACE, "func->class=%x\n", func->class);
 493         brcmf_dbg(TRACE, "sdio_vendor: 0x%04x\n", func->vendor);
 494         brcmf_dbg(TRACE, "sdio_device: 0x%04x\n", func->device);
 495         brcmf_dbg(TRACE, "Function#: 0x%04x\n", func->num);
 496
 497         if (func->num == 1) {
 498                 if (dev_get_drvdata(&func->card->dev)) {
 499                         brcmf_dbg(ERROR, "card private drvdata occupied\n");
 500                         return -ENXIO;
 501                 }
 502                 bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL);
 503                 if (!bus_if)
 504                         return -ENOMEM;
 505                 sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL);
 506                 if (!sdiodev) {
 507                         kfree(bus_if);
 508                         return -ENOMEM;
 509                 }
 510                 sdiodev->func[0] = func;
 511                 sdiodev->func[1] = func;
 512                 sdiodev->bus_if = bus_if;
 513                 bus_if->bus_priv.sdio = sdiodev;
 514                 bus_if->type = SDIO_BUS;
 515                 bus_if->align = BRCMF_SDALIGN;
 516                 dev_set_drvdata(&func->card->dev, sdiodev);
 517
 518                 atomic_set(&sdiodev->suspend, false);
 519                 init_waitqueue_head(&sdiodev->request_byte_wait);
 520                 init_waitqueue_head(&sdiodev->request_word_wait);
 521                 init_waitqueue_head(&sdiodev->request_chain_wait);
 522                 init_waitqueue_head(&sdiodev->request_buffer_wait);
 523         }
 524
 525         if (func->num == 2) {
 526                 sdiodev = dev_get_drvdata(&func->card->dev);
 527                 if ((!sdiodev) || (sdiodev->func[1]->card != func->card))
 528                         return -ENODEV;
 529
 530                 ret = brcmf_sdio_getintrcfg(sdiodev);
 531                 if (ret)
 532                         return ret;
 533                 sdiodev->func[2] = func;
 534
 535                 bus_if = sdiodev->bus_if;
 536                 sdiodev->dev = &func->dev;
 537                 dev_set_drvdata(&func->dev, bus_if);
 538
 539                 brcmf_dbg(TRACE, "F2 found, calling brcmf_sdio_probe...\n");
 540                 ret = brcmf_sdio_probe(sdiodev);
 541         }
 542
 543         return ret;
 544 }
 545
 546 static void brcmf_ops_sdio_remove(struct sdio_func *func)
 547 {
 548         struct brcmf_bus *bus_if;
 549         struct brcmf_sdio_dev *sdiodev;
 550         brcmf_dbg(TRACE, "Enter\n");
 551         brcmf_dbg(INFO, "func->class=%x\n", func->class);
 552         brcmf_dbg(INFO, "sdio_vendor: 0x%04x\n", func->vendor);
 553         brcmf_dbg(INFO, "sdio_device: 0x%04x\n", func->device);
 554         brcmf_dbg(INFO, "Function#: 0x%04x\n", func->num);
 555
 556         if (func->num == 2) {
 557                 bus_if = dev_get_drvdata(&func->dev);
 558                 sdiodev = bus_if->bus_priv.sdio;
 559                 brcmf_dbg(TRACE, "F2 found, calling brcmf_sdio_remove...\n");
 560                 brcmf_sdio_remove(sdiodev);
 561                 dev_set_drvdata(&func->card->dev, NULL);
 562                 dev_set_drvdata(&func->dev, NULL);
 563                 kfree(bus_if);
 564                 kfree(sdiodev);
 565         }
 566 }
 567
 568 #ifdef CONFIG_PM_SLEEP
 569 static int brcmf_sdio_suspend(struct device *dev)
 570 {
 571         mmc_pm_flag_t sdio_flags;
 572         struct sdio_func *func = dev_to_sdio_func(dev);
 573         struct brcmf_sdio_dev *sdiodev = dev_get_drvdata(&func->card->dev);
 574         int ret = 0;
 575
 576         brcmf_dbg(TRACE, "\n");
 577
 578         atomic_set(&sdiodev->suspend, true);
 579
 580         sdio_flags = sdio_get_host_pm_caps(sdiodev->func[1]);
 581         if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
 582                 brcmf_dbg(ERROR, "Host can't keep power while suspended\n");
 583                 return -EINVAL;
 584         }
 585
 586         ret = sdio_set_host_pm_flags(sdiodev->func[1], MMC_PM_KEEP_POWER);
 587         if (ret) {
 588                 brcmf_dbg(ERROR, "Failed to set pm_flags\n");
 589                 return ret;
 590         }
 591
 592         brcmf_sdio_wdtmr_enable(sdiodev, false);
 593
 594         return ret;
 595 }
 596
 597 static int brcmf_sdio_resume(struct device *dev)
 598 {
 599         struct sdio_func *func = dev_to_sdio_func(dev);
 600         struct brcmf_sdio_dev *sdiodev = dev_get_drvdata(&func->card->dev);
 601
 602         brcmf_sdio_wdtmr_enable(sdiodev, true);
 603         atomic_set(&sdiodev->suspend, false);
 604         return 0;
 605 }
 606
 607 static const struct dev_pm_ops brcmf_sdio_pm_ops = {
 608         .suspend        = brcmf_sdio_suspend,
 609         .resume         = brcmf_sdio_resume,
 610 };
 611 #endif  /* CONFIG_PM_SLEEP */
 612
 613 static struct sdio_driver brcmf_sdmmc_driver = {
 614         .probe = brcmf_ops_sdio_probe,
 615         .remove = brcmf_ops_sdio_remove,
 616         .name = "brcmfmac",
 617         .id_table = brcmf_sdmmc_ids,
 618 #ifdef CONFIG_PM_SLEEP
 619         .drv = {
 620                 .pm = &brcmf_sdio_pm_ops,
 621         },
 622 #endif  /* CONFIG_PM_SLEEP */
 623 };
 624
 625 #ifdef CONFIG_BRCMFMAC_SDIO_OOB
 626 static int brcmf_sdio_pd_probe(struct platform_device *pdev)
 627 {
 628         struct resource *res;
 629         struct brcmf_sdio_oobirq *oobirq_entry;
 630         int i, ret;
 631
 632         INIT_LIST_HEAD(&oobirq_lh);
 633
 634         for (i = 0; ; i++) {
 635                 res = platform_get_resource(pdev, IORESOURCE_IRQ, i);
 636                 if (!res)
 637                         break;
 638
 639                 oobirq_entry = kzalloc(sizeof(struct brcmf_sdio_oobirq),
 640                                        GFP_KERNEL);
 641                 oobirq_entry->irq = res->start;
 642                 oobirq_entry->flags = res->flags & IRQF_TRIGGER_MASK;
 643                 list_add_tail(&oobirq_entry->list, &oobirq_lh);
 644         }
 645         if (i == 0)
 646                 return -ENXIO;
 647
 648         ret = sdio_register_driver(&brcmf_sdmmc_driver);
 649
 650         if (ret)
 651                 brcmf_dbg(ERROR, "sdio_register_driver failed: %d\n", ret);
 652
 653         return ret;
 654 }
 655
 656 static struct platform_driver brcmf_sdio_pd = {
 657         .probe          = brcmf_sdio_pd_probe,
 658         .driver         = {
 659                 .name   = "brcmf_sdio_pd"
 660         }
 661 };
 662
 663 void brcmf_sdio_exit(void)
 664 {
 665         brcmf_dbg(TRACE, "Enter\n");
 666
 667         sdio_unregister_driver(&brcmf_sdmmc_driver);
 668
 669         platform_driver_unregister(&brcmf_sdio_pd);
 670 }
 671
 672 void brcmf_sdio_init(void)
 673 {
 674         int ret;
 675
 676         brcmf_dbg(TRACE, "Enter\n");
 677
 678         ret = platform_driver_register(&brcmf_sdio_pd);
 679
 680         if (ret)
 681                 brcmf_dbg(ERROR, "platform_driver_register failed: %d\n", ret);
 682 }
 683 #else
 684 void brcmf_sdio_exit(void)
 685 {
 686         brcmf_dbg(TRACE, "Enter\n");
 687
 688         sdio_unregister_driver(&brcmf_sdmmc_driver);
 689 }
 690
 691 void brcmf_sdio_init(void)
 692 {
 693         int ret;
 694
 695         brcmf_dbg(TRACE, "Enter\n");
 696
 697         ret = sdio_register_driver(&brcmf_sdmmc_driver);
 698
 699         if (ret)
 700                 brcmf_dbg(ERROR, "sdio_register_driver failed: %d\n", ret);
 701 }
 702 #endif          /* CONFIG_BRCMFMAC_SDIO_OOB */