drivers/bcma/main.c

   1 /*
   2  * Broadcom specific AMBA
   3  * Bus subsystem
   4  *
   5  * Licensed under the GNU/GPL. See COPYING for details.
   6  */
   7
   8 #include "bcma_private.h"
   9 #include <linux/module.h>
  10 #include <linux/mmc/sdio_func.h>
  11 #include <linux/platform_device.h>
  12 #include <linux/pci.h>
  13 #include <linux/bcma/bcma.h>
  14 #include <linux/slab.h>
  15 #include <linux/of_address.h>
  16 #include <linux/of_irq.h>
  17 #include <linux/of_platform.h>
  18
  19 MODULE_DESCRIPTION("Broadcom's specific AMBA driver");
  20 MODULE_LICENSE("GPL");
  21
  22 /* contains the number the next bus should get. */
  23 static unsigned int bcma_bus_next_num = 0;
  24
  25 /* bcma_buses_mutex locks the bcma_bus_next_num */
  26 static DEFINE_MUTEX(bcma_buses_mutex);
  27
  28 static int bcma_bus_match(struct device *dev, struct device_driver *drv);
  29 static int bcma_device_probe(struct device *dev);
  30 static int bcma_device_remove(struct device *dev);
  31 static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env);
  32
  33 static ssize_t manuf_show(struct device *dev, struct device_attribute *attr, char *buf)
  34 {
  35         struct bcma_device *core = container_of(dev, struct bcma_device, dev);
  36         return sprintf(buf, "0x%03X\n", core->id.manuf);
  37 }
  38 static DEVICE_ATTR_RO(manuf);
  39
  40 static ssize_t id_show(struct device *dev, struct device_attribute *attr, char *buf)
  41 {
  42         struct bcma_device *core = container_of(dev, struct bcma_device, dev);
  43         return sprintf(buf, "0x%03X\n", core->id.id);
  44 }
  45 static DEVICE_ATTR_RO(id);
  46
  47 static ssize_t rev_show(struct device *dev, struct device_attribute *attr, char *buf)
  48 {
  49         struct bcma_device *core = container_of(dev, struct bcma_device, dev);
  50         return sprintf(buf, "0x%02X\n", core->id.rev);
  51 }
  52 static DEVICE_ATTR_RO(rev);
  53
  54 static ssize_t class_show(struct device *dev, struct device_attribute *attr, char *buf)
  55 {
  56         struct bcma_device *core = container_of(dev, struct bcma_device, dev);
  57         return sprintf(buf, "0x%X\n", core->id.class);
  58 }
  59 static DEVICE_ATTR_RO(class);
  60
  61 static struct attribute *bcma_device_attrs[] = {
  62         &dev_attr_manuf.attr,
  63         &dev_attr_id.attr,
  64         &dev_attr_rev.attr,
  65         &dev_attr_class.attr,
  66         NULL,
  67 };
  68 ATTRIBUTE_GROUPS(bcma_device);
  69
  70 static struct bus_type bcma_bus_type = {
  71         .name           = "bcma",
  72         .match          = bcma_bus_match,
  73         .probe          = bcma_device_probe,
  74         .remove         = bcma_device_remove,
  75         .uevent         = bcma_device_uevent,
  76         .dev_groups     = bcma_device_groups,
  77 };
  78
  79 static u16 bcma_cc_core_id(struct bcma_bus *bus)
  80 {
  81         if (bus->chipinfo.id == BCMA_CHIP_ID_BCM4706)
  82                 return BCMA_CORE_4706_CHIPCOMMON;
  83         return BCMA_CORE_CHIPCOMMON;
  84 }
  85
  86 struct bcma_device *bcma_find_core_unit(struct bcma_bus *bus, u16 coreid,
  87                                         u8 unit)
  88 {
  89         struct bcma_device *core;
  90
  91         list_for_each_entry(core, &bus->cores, list) {
  92                 if (core->id.id == coreid && core->core_unit == unit)
  93                         return core;
  94         }
  95         return NULL;
  96 }
  97 EXPORT_SYMBOL_GPL(bcma_find_core_unit);
  98
  99 bool bcma_wait_value(struct bcma_device *core, u16 reg, u32 mask, u32 value,
 100                      int timeout)
 101 {
 102         unsigned long deadline = jiffies + timeout;
 103         u32 val;
 104
 105         do {
 106                 val = bcma_read32(core, reg);
 107                 if ((val & mask) == value)
 108                         return true;
 109                 cpu_relax();
 110                 udelay(10);
 111         } while (!time_after_eq(jiffies, deadline));
 112
 113         bcma_warn(core->bus, "Timeout waiting for register 0x%04X!\n", reg);
 114
 115         return false;
 116 }
 117
 118 static void bcma_release_core_dev(struct device *dev)
 119 {
 120         struct bcma_device *core = container_of(dev, struct bcma_device, dev);
 121         if (core->io_addr)
 122                 iounmap(core->io_addr);
 123         if (core->io_wrap)
 124                 iounmap(core->io_wrap);
 125         kfree(core);
 126 }
 127
 128 static bool bcma_is_core_needed_early(u16 core_id)
 129 {
 130         switch (core_id) {
 131         case BCMA_CORE_NS_NAND:
 132         case BCMA_CORE_NS_QSPI:
 133                 return true;
 134         }
 135
 136         return false;
 137 }
 138
 139 static struct device_node *bcma_of_find_child_device(struct device *parent,
 140                                                      struct bcma_device *core)
 141 {
 142         struct device_node *node;
 143         u64 size;
 144         const __be32 *reg;
 145
 146         if (!parent->of_node)
 147                 return NULL;
 148
 149         for_each_child_of_node(parent->of_node, node) {
 150                 reg = of_get_address(node, 0, &size, NULL);
 151                 if (!reg)
 152                         continue;
 153                 if (of_translate_address(node, reg) == core->addr)
 154                         return node;
 155         }
 156         return NULL;
 157 }
 158
 159 static int bcma_of_irq_parse(struct device *parent,
 160                              struct bcma_device *core,
 161                              struct of_phandle_args *out_irq, int num)
 162 {
 163         __be32 laddr[1];
 164         int rc;
 165
 166         if (core->dev.of_node) {
 167                 rc = of_irq_parse_one(core->dev.of_node, num, out_irq);
 168                 if (!rc)
 169                         return rc;
 170         }
 171
 172         out_irq->np = parent->of_node;
 173         out_irq->args_count = 1;
 174         out_irq->args[0] = num;
 175
 176         laddr[0] = cpu_to_be32(core->addr);
 177         return of_irq_parse_raw(laddr, out_irq);
 178 }
 179
 180 static unsigned int bcma_of_get_irq(struct device *parent,
 181                                     struct bcma_device *core, int num)
 182 {
 183         struct of_phandle_args out_irq;
 184         int ret;
 185
 186         if (!IS_ENABLED(CONFIG_OF_IRQ) || !parent->of_node)
 187                 return 0;
 188
 189         ret = bcma_of_irq_parse(parent, core, &out_irq, num);
 190         if (ret) {
 191                 bcma_debug(core->bus, "bcma_of_get_irq() failed with rc=%d\n",
 192                            ret);
 193                 return 0;
 194         }
 195
 196         return irq_create_of_mapping(&out_irq);
 197 }
 198
 199 static void bcma_of_fill_device(struct device *parent,
 200                                 struct bcma_device *core)
 201 {
 202         struct device_node *node;
 203
 204         node = bcma_of_find_child_device(parent, core);
 205         if (node)
 206                 core->dev.of_node = node;
 207
 208         core->irq = bcma_of_get_irq(parent, core, 0);
 209
 210         of_dma_configure(&core->dev, node, false);
 211 }
 212
 213 unsigned int bcma_core_irq(struct bcma_device *core, int num)
 214 {
 215         struct bcma_bus *bus = core->bus;
 216         unsigned int mips_irq;
 217
 218         switch (bus->hosttype) {
 219         case BCMA_HOSTTYPE_PCI:
 220                 return bus->host_pci->irq;
 221         case BCMA_HOSTTYPE_SOC:
 222                 if (bus->drv_mips.core && num == 0) {
 223                         mips_irq = bcma_core_mips_irq(core);
 224                         return mips_irq <= 4 ? mips_irq + 2 : 0;
 225                 }
 226                 if (bus->host_pdev)
 227                         return bcma_of_get_irq(&bus->host_pdev->dev, core, num);
 228                 return 0;
 229         case BCMA_HOSTTYPE_SDIO:
 230                 return 0;
 231         }
 232
 233         return 0;
 234 }
 235 EXPORT_SYMBOL(bcma_core_irq);
 236
 237 void bcma_prepare_core(struct bcma_bus *bus, struct bcma_device *core)
 238 {
 239         core->dev.release = bcma_release_core_dev;
 240         core->dev.bus = &bcma_bus_type;
 241         dev_set_name(&core->dev, "bcma%d:%d", bus->num, core->core_index);
 242         core->dev.parent = bcma_bus_get_host_dev(bus);
 243         if (core->dev.parent)
 244                 bcma_of_fill_device(core->dev.parent, core);
 245
 246         switch (bus->hosttype) {
 247         case BCMA_HOSTTYPE_PCI:
 248                 core->dma_dev = &bus->host_pci->dev;
 249                 core->irq = bus->host_pci->irq;
 250                 break;
 251         case BCMA_HOSTTYPE_SOC:
 252                 if (IS_ENABLED(CONFIG_OF) && bus->host_pdev) {
 253                         core->dma_dev = &bus->host_pdev->dev;
 254                 } else {
 255                         core->dev.dma_mask = &core->dev.coherent_dma_mask;
 256                         core->dma_dev = &core->dev;
 257                 }
 258                 break;
 259         case BCMA_HOSTTYPE_SDIO:
 260                 break;
 261         }
 262 }
 263
 264 struct device *bcma_bus_get_host_dev(struct bcma_bus *bus)
 265 {
 266         switch (bus->hosttype) {
 267         case BCMA_HOSTTYPE_PCI:
 268                 if (bus->host_pci)
 269                         return &bus->host_pci->dev;
 270                 else
 271                         return NULL;
 272         case BCMA_HOSTTYPE_SOC:
 273                 if (bus->host_pdev)
 274                         return &bus->host_pdev->dev;
 275                 else
 276                         return NULL;
 277         case BCMA_HOSTTYPE_SDIO:
 278                 if (bus->host_sdio)
 279                         return &bus->host_sdio->dev;
 280                 else
 281                         return NULL;
 282         }
 283         return NULL;
 284 }
 285
 286 void bcma_init_bus(struct bcma_bus *bus)
 287 {
 288         mutex_lock(&bcma_buses_mutex);
 289         bus->num = bcma_bus_next_num++;
 290         mutex_unlock(&bcma_buses_mutex);
 291
 292         INIT_LIST_HEAD(&bus->cores);
 293         bus->nr_cores = 0;
 294
 295         bcma_detect_chip(bus);
 296 }
 297
 298 static void bcma_register_core(struct bcma_bus *bus, struct bcma_device *core)
 299 {
 300         int err;
 301
 302         err = device_register(&core->dev);
 303         if (err) {
 304                 bcma_err(bus, "Could not register dev for core 0x%03X\n",
 305                          core->id.id);
 306                 put_device(&core->dev);
 307                 return;
 308         }
 309         core->dev_registered = true;
 310 }
 311
 312 static int bcma_register_devices(struct bcma_bus *bus)
 313 {
 314         struct bcma_device *core;
 315         int err;
 316
 317         list_for_each_entry(core, &bus->cores, list) {
 318                 /* We support that cores ourself */
 319                 switch (core->id.id) {
 320                 case BCMA_CORE_4706_CHIPCOMMON:
 321                 case BCMA_CORE_CHIPCOMMON:
 322                 case BCMA_CORE_NS_CHIPCOMMON_B:
 323                 case BCMA_CORE_PCI:
 324                 case BCMA_CORE_PCIE:
 325                 case BCMA_CORE_PCIE2:
 326                 case BCMA_CORE_MIPS_74K:
 327                 case BCMA_CORE_4706_MAC_GBIT_COMMON:
 328                         continue;
 329                 }
 330
 331                 /* Early cores were already registered */
 332                 if (bcma_is_core_needed_early(core->id.id))
 333                         continue;
 334
 335                 /* Only first GMAC core on BCM4706 is connected and working */
 336                 if (core->id.id == BCMA_CORE_4706_MAC_GBIT &&
 337                     core->core_unit > 0)
 338                         continue;
 339
 340                 bcma_register_core(bus, core);
 341         }
 342
 343 #ifdef CONFIG_BCMA_PFLASH
 344         if (bus->drv_cc.pflash.present) {
 345                 err = platform_device_register(&bcma_pflash_dev);
 346                 if (err)
 347                         bcma_err(bus, "Error registering parallel flash\n");
 348         }
 349 #endif
 350
 351 #ifdef CONFIG_BCMA_SFLASH
 352         if (bus->drv_cc.sflash.present) {
 353                 err = platform_device_register(&bcma_sflash_dev);
 354                 if (err)
 355                         bcma_err(bus, "Error registering serial flash\n");
 356         }
 357 #endif
 358
 359 #ifdef CONFIG_BCMA_NFLASH
 360         if (bus->drv_cc.nflash.present) {
 361                 err = platform_device_register(&bcma_nflash_dev);
 362                 if (err)
 363                         bcma_err(bus, "Error registering NAND flash\n");
 364         }
 365 #endif
 366         err = bcma_gpio_init(&bus->drv_cc);
 367         if (err == -ENOTSUPP)
 368                 bcma_debug(bus, "GPIO driver not activated\n");
 369         else if (err)
 370                 bcma_err(bus, "Error registering GPIO driver: %i\n", err);
 371
 372         if (bus->hosttype == BCMA_HOSTTYPE_SOC) {
 373                 err = bcma_chipco_watchdog_register(&bus->drv_cc);
 374                 if (err)
 375                         bcma_err(bus, "Error registering watchdog driver\n");
 376         }
 377
 378         return 0;
 379 }
 380
 381 void bcma_unregister_cores(struct bcma_bus *bus)
 382 {
 383         struct bcma_device *core, *tmp;
 384
 385         list_for_each_entry_safe(core, tmp, &bus->cores, list) {
 386                 if (!core->dev_registered)
 387                         continue;
 388                 list_del(&core->list);
 389                 device_unregister(&core->dev);
 390         }
 391         if (bus->hosttype == BCMA_HOSTTYPE_SOC)
 392                 platform_device_unregister(bus->drv_cc.watchdog);
 393
 394         /* Now noone uses internally-handled cores, we can free them */
 395         list_for_each_entry_safe(core, tmp, &bus->cores, list) {
 396                 list_del(&core->list);
 397                 kfree(core);
 398         }
 399 }
 400
 401 int bcma_bus_register(struct bcma_bus *bus)
 402 {
 403         int err;
 404         struct bcma_device *core;
 405         struct device *dev;
 406
 407         /* Scan for devices (cores) */
 408         err = bcma_bus_scan(bus);
 409         if (err) {
 410                 bcma_err(bus, "Failed to scan: %d\n", err);
 411                 return err;
 412         }
 413
 414         /* Early init CC core */
 415         core = bcma_find_core(bus, bcma_cc_core_id(bus));
 416         if (core) {
 417                 bus->drv_cc.core = core;
 418                 bcma_core_chipcommon_early_init(&bus->drv_cc);
 419         }
 420
 421         /* Early init PCIE core */
 422         core = bcma_find_core(bus, BCMA_CORE_PCIE);
 423         if (core) {
 424                 bus->drv_pci[0].core = core;
 425                 bcma_core_pci_early_init(&bus->drv_pci[0]);
 426         }
 427
 428         dev = bcma_bus_get_host_dev(bus);
 429         if (dev) {
 430                 of_platform_default_populate(dev->of_node, NULL, dev);
 431         }
 432
 433         /* Cores providing flash access go before SPROM init */
 434         list_for_each_entry(core, &bus->cores, list) {
 435                 if (bcma_is_core_needed_early(core->id.id))
 436                         bcma_register_core(bus, core);
 437         }
 438
 439         /* Try to get SPROM */
 440         err = bcma_sprom_get(bus);
 441         if (err == -ENOENT) {
 442                 bcma_err(bus, "No SPROM available\n");
 443         } else if (err)
 444                 bcma_err(bus, "Failed to get SPROM: %d\n", err);
 445
 446         /* Init CC core */
 447         core = bcma_find_core(bus, bcma_cc_core_id(bus));
 448         if (core) {
 449                 bus->drv_cc.core = core;
 450                 bcma_core_chipcommon_init(&bus->drv_cc);
 451         }
 452
 453         /* Init CC core */
 454         core = bcma_find_core(bus, BCMA_CORE_NS_CHIPCOMMON_B);
 455         if (core) {
 456                 bus->drv_cc_b.core = core;
 457                 bcma_core_chipcommon_b_init(&bus->drv_cc_b);
 458         }
 459
 460         /* Init MIPS core */
 461         core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
 462         if (core) {
 463                 bus->drv_mips.core = core;
 464                 bcma_core_mips_init(&bus->drv_mips);
 465         }
 466
 467         /* Init PCIE core */
 468         core = bcma_find_core_unit(bus, BCMA_CORE_PCIE, 0);
 469         if (core) {
 470                 bus->drv_pci[0].core = core;
 471                 bcma_core_pci_init(&bus->drv_pci[0]);
 472         }
 473
 474         /* Init PCIE core */
 475         core = bcma_find_core_unit(bus, BCMA_CORE_PCIE, 1);
 476         if (core) {
 477                 bus->drv_pci[1].core = core;
 478                 bcma_core_pci_init(&bus->drv_pci[1]);
 479         }
 480
 481         /* Init PCIe Gen 2 core */
 482         core = bcma_find_core_unit(bus, BCMA_CORE_PCIE2, 0);
 483         if (core) {
 484                 bus->drv_pcie2.core = core;
 485                 bcma_core_pcie2_init(&bus->drv_pcie2);
 486         }
 487
 488         /* Init GBIT MAC COMMON core */
 489         core = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON);
 490         if (core) {
 491                 bus->drv_gmac_cmn.core = core;
 492                 bcma_core_gmac_cmn_init(&bus->drv_gmac_cmn);
 493         }
 494
 495         /* Register found cores */
 496         bcma_register_devices(bus);
 497
 498         bcma_info(bus, "Bus registered\n");
 499
 500         return 0;
 501 }
 502
 503 void bcma_bus_unregister(struct bcma_bus *bus)
 504 {
 505         int err;
 506
 507         err = bcma_gpio_unregister(&bus->drv_cc);
 508         if (err == -EBUSY)
 509                 bcma_err(bus, "Some GPIOs are still in use.\n");
 510         else if (err)
 511                 bcma_err(bus, "Can not unregister GPIO driver: %i\n", err);
 512
 513         bcma_core_chipcommon_b_free(&bus->drv_cc_b);
 514
 515         bcma_unregister_cores(bus);
 516 }
 517
 518 /*
 519  * This is a special version of bus registration function designed for SoCs.
 520  * It scans bus and performs basic initialization of main cores only.
 521  * Please note it requires memory allocation, however it won't try to sleep.
 522  */
 523 int __init bcma_bus_early_register(struct bcma_bus *bus)
 524 {
 525         int err;
 526         struct bcma_device *core;
 527
 528         /* Scan for devices (cores) */
 529         err = bcma_bus_scan(bus);
 530         if (err) {
 531                 bcma_err(bus, "Failed to scan bus: %d\n", err);
 532                 return -1;
 533         }
 534
 535         /* Early init CC core */
 536         core = bcma_find_core(bus, bcma_cc_core_id(bus));
 537         if (core) {
 538                 bus->drv_cc.core = core;
 539                 bcma_core_chipcommon_early_init(&bus->drv_cc);
 540         }
 541
 542         /* Early init MIPS core */
 543         core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
 544         if (core) {
 545                 bus->drv_mips.core = core;
 546                 bcma_core_mips_early_init(&bus->drv_mips);
 547         }
 548
 549         bcma_info(bus, "Early bus registered\n");
 550
 551         return 0;
 552 }
 553
 554 #ifdef CONFIG_PM
 555 int bcma_bus_suspend(struct bcma_bus *bus)
 556 {
 557         struct bcma_device *core;
 558
 559         list_for_each_entry(core, &bus->cores, list) {
 560                 struct device_driver *drv = core->dev.driver;
 561                 if (drv) {
 562                         struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
 563                         if (adrv->suspend)
 564                                 adrv->suspend(core);
 565                 }
 566         }
 567         return 0;
 568 }
 569
 570 int bcma_bus_resume(struct bcma_bus *bus)
 571 {
 572         struct bcma_device *core;
 573
 574         /* Init CC core */
 575         if (bus->drv_cc.core) {
 576                 bus->drv_cc.setup_done = false;
 577                 bcma_core_chipcommon_init(&bus->drv_cc);
 578         }
 579
 580         list_for_each_entry(core, &bus->cores, list) {
 581                 struct device_driver *drv = core->dev.driver;
 582                 if (drv) {
 583                         struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
 584                         if (adrv->resume)
 585                                 adrv->resume(core);
 586                 }
 587         }
 588
 589         return 0;
 590 }
 591 #endif
 592
 593 int __bcma_driver_register(struct bcma_driver *drv, struct module *owner)
 594 {
 595         drv->drv.name = drv->name;
 596         drv->drv.bus = &bcma_bus_type;
 597         drv->drv.owner = owner;
 598
 599         return driver_register(&drv->drv);
 600 }
 601 EXPORT_SYMBOL_GPL(__bcma_driver_register);
 602
 603 void bcma_driver_unregister(struct bcma_driver *drv)
 604 {
 605         driver_unregister(&drv->drv);
 606 }
 607 EXPORT_SYMBOL_GPL(bcma_driver_unregister);
 608
 609 static int bcma_bus_match(struct device *dev, struct device_driver *drv)
 610 {
 611         struct bcma_device *core = container_of(dev, struct bcma_device, dev);
 612         struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
 613         const struct bcma_device_id *cid = &core->id;
 614         const struct bcma_device_id *did;
 615
 616         for (did = adrv->id_table; did->manuf || did->id || did->rev; did++) {
 617             if ((did->manuf == cid->manuf || did->manuf == BCMA_ANY_MANUF) &&
 618                 (did->id == cid->id || did->id == BCMA_ANY_ID) &&
 619                 (did->rev == cid->rev || did->rev == BCMA_ANY_REV) &&
 620                 (did->class == cid->class || did->class == BCMA_ANY_CLASS))
 621                         return 1;
 622         }
 623         return 0;
 624 }
 625
 626 static int bcma_device_probe(struct device *dev)
 627 {
 628         struct bcma_device *core = container_of(dev, struct bcma_device, dev);
 629         struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
 630                                                drv);
 631         int err = 0;
 632
 633         get_device(dev);
 634         if (adrv->probe)
 635                 err = adrv->probe(core);
 636         if (err)
 637                 put_device(dev);
 638
 639         return err;
 640 }
 641
 642 static int bcma_device_remove(struct device *dev)
 643 {
 644         struct bcma_device *core = container_of(dev, struct bcma_device, dev);
 645         struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
 646                                                drv);
 647
 648         if (adrv->remove)
 649                 adrv->remove(core);
 650         put_device(dev);
 651
 652         return 0;
 653 }
 654
 655 static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env)
 656 {
 657         struct bcma_device *core = container_of(dev, struct bcma_device, dev);
 658
 659         return add_uevent_var(env,
 660                               "MODALIAS=bcma:m%04Xid%04Xrev%02Xcl%02X",
 661                               core->id.manuf, core->id.id,
 662                               core->id.rev, core->id.class);
 663 }
 664
 665 static unsigned int bcma_bus_registered;
 666
 667 /*
 668  * If built-in, bus has to be registered early, before any driver calls
 669  * bcma_driver_register.
 670  * Otherwise registering driver would trigger BUG in driver_register.
 671  */
 672 static int __init bcma_init_bus_register(void)
 673 {
 674         int err;
 675
 676         if (bcma_bus_registered)
 677                 return 0;
 678
 679         err = bus_register(&bcma_bus_type);
 680         if (!err)
 681                 bcma_bus_registered = 1;
 682
 683         return err;
 684 }
 685 #ifndef MODULE
 686 fs_initcall(bcma_init_bus_register);
 687 #endif
 688
 689 /* Main initialization has to be done with SPI/mtd/NAND/SPROM available */
 690 static int __init bcma_modinit(void)
 691 {
 692         int err;
 693
 694         err = bcma_init_bus_register();
 695         if (err)
 696                 return err;
 697
 698         err = bcma_host_soc_register_driver();
 699         if (err) {
 700                 pr_err("SoC host initialization failed\n");
 701                 err = 0;
 702         }
 703 #ifdef CONFIG_BCMA_HOST_PCI
 704         err = bcma_host_pci_init();
 705         if (err) {
 706                 pr_err("PCI host initialization failed\n");
 707                 err = 0;
 708         }
 709 #endif
 710
 711         return err;
 712 }
 713 module_init(bcma_modinit);
 714
 715 static void __exit bcma_modexit(void)
 716 {
 717 #ifdef CONFIG_BCMA_HOST_PCI
 718         bcma_host_pci_exit();
 719 #endif
 720         bcma_host_soc_unregister_driver();
 721         bus_unregister(&bcma_bus_type);
 722 }
 723 module_exit(bcma_modexit)