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         if (!IS_ENABLED(CONFIG_OF_IRQ))
 205                 return;
 206
 207         node = bcma_of_find_child_device(parent, core);
 208         if (node)
 209                 core->dev.of_node = node;
 210
 211         core->irq = bcma_of_get_irq(parent, core, 0);
 212
 213         of_dma_configure(&core->dev, node);
 214 }
 215
 216 unsigned int bcma_core_irq(struct bcma_device *core, int num)
 217 {
 218         struct bcma_bus *bus = core->bus;
 219         unsigned int mips_irq;
 220
 221         switch (bus->hosttype) {
 222         case BCMA_HOSTTYPE_PCI:
 223                 return bus->host_pci->irq;
 224         case BCMA_HOSTTYPE_SOC:
 225                 if (bus->drv_mips.core && num == 0) {
 226                         mips_irq = bcma_core_mips_irq(core);
 227                         return mips_irq <= 4 ? mips_irq + 2 : 0;
 228                 }
 229                 if (bus->host_pdev)
 230                         return bcma_of_get_irq(&bus->host_pdev->dev, core, num);
 231                 return 0;
 232         case BCMA_HOSTTYPE_SDIO:
 233                 return 0;
 234         }
 235
 236         return 0;
 237 }
 238 EXPORT_SYMBOL(bcma_core_irq);
 239
 240 void bcma_prepare_core(struct bcma_bus *bus, struct bcma_device *core)
 241 {
 242         core->dev.release = bcma_release_core_dev;
 243         core->dev.bus = &bcma_bus_type;
 244         dev_set_name(&core->dev, "bcma%d:%d", bus->num, core->core_index);
 245
 246         switch (bus->hosttype) {
 247         case BCMA_HOSTTYPE_PCI:
 248                 core->dev.parent = &bus->host_pci->dev;
 249                 core->dma_dev = &bus->host_pci->dev;
 250                 core->irq = bus->host_pci->irq;
 251                 break;
 252         case BCMA_HOSTTYPE_SOC:
 253                 if (IS_ENABLED(CONFIG_OF) && bus->host_pdev) {
 254                         core->dma_dev = &bus->host_pdev->dev;
 255                         core->dev.parent = &bus->host_pdev->dev;
 256                         if (core->dev.parent)
 257                                 bcma_of_fill_device(core->dev.parent, core);
 258                 } else {
 259                         core->dev.dma_mask = &core->dev.coherent_dma_mask;
 260                         core->dma_dev = &core->dev;
 261                 }
 262                 break;
 263         case BCMA_HOSTTYPE_SDIO:
 264                 break;
 265         }
 266 }
 267
 268 struct device *bcma_bus_get_host_dev(struct bcma_bus *bus)
 269 {
 270         switch (bus->hosttype) {
 271         case BCMA_HOSTTYPE_PCI:
 272                 if (bus->host_pci)
 273                         return &bus->host_pci->dev;
 274                 else
 275                         return NULL;
 276         case BCMA_HOSTTYPE_SOC:
 277                 if (bus->host_pdev)
 278                         return &bus->host_pdev->dev;
 279                 else
 280                         return NULL;
 281         case BCMA_HOSTTYPE_SDIO:
 282                 if (bus->host_sdio)
 283                         return &bus->host_sdio->dev;
 284                 else
 285                         return NULL;
 286         }
 287         return NULL;
 288 }
 289
 290 void bcma_init_bus(struct bcma_bus *bus)
 291 {
 292         mutex_lock(&bcma_buses_mutex);
 293         bus->num = bcma_bus_next_num++;
 294         mutex_unlock(&bcma_buses_mutex);
 295
 296         INIT_LIST_HEAD(&bus->cores);
 297         bus->nr_cores = 0;
 298
 299         bcma_detect_chip(bus);
 300 }
 301
 302 static void bcma_register_core(struct bcma_bus *bus, struct bcma_device *core)
 303 {
 304         int err;
 305
 306         err = device_register(&core->dev);
 307         if (err) {
 308                 bcma_err(bus, "Could not register dev for core 0x%03X\n",
 309                          core->id.id);
 310                 put_device(&core->dev);
 311                 return;
 312         }
 313         core->dev_registered = true;
 314 }
 315
 316 static int bcma_register_devices(struct bcma_bus *bus)
 317 {
 318         struct bcma_device *core;
 319         int err;
 320
 321         list_for_each_entry(core, &bus->cores, list) {
 322                 /* We support that cores ourself */
 323                 switch (core->id.id) {
 324                 case BCMA_CORE_4706_CHIPCOMMON:
 325                 case BCMA_CORE_CHIPCOMMON:
 326                 case BCMA_CORE_NS_CHIPCOMMON_B:
 327                 case BCMA_CORE_PCI:
 328                 case BCMA_CORE_PCIE:
 329                 case BCMA_CORE_PCIE2:
 330                 case BCMA_CORE_MIPS_74K:
 331                 case BCMA_CORE_4706_MAC_GBIT_COMMON:
 332                         continue;
 333                 }
 334
 335                 /* Early cores were already registered */
 336                 if (bcma_is_core_needed_early(core->id.id))
 337                         continue;
 338
 339                 /* Only first GMAC core on BCM4706 is connected and working */
 340                 if (core->id.id == BCMA_CORE_4706_MAC_GBIT &&
 341                     core->core_unit > 0)
 342                         continue;
 343
 344                 bcma_register_core(bus, core);
 345         }
 346
 347 #ifdef CONFIG_BCMA_PFLASH
 348         if (bus->drv_cc.pflash.present) {
 349                 err = platform_device_register(&bcma_pflash_dev);
 350                 if (err)
 351                         bcma_err(bus, "Error registering parallel flash\n");
 352         }
 353 #endif
 354
 355 #ifdef CONFIG_BCMA_SFLASH
 356         if (bus->drv_cc.sflash.present) {
 357                 err = platform_device_register(&bcma_sflash_dev);
 358                 if (err)
 359                         bcma_err(bus, "Error registering serial flash\n");
 360         }
 361 #endif
 362
 363 #ifdef CONFIG_BCMA_NFLASH
 364         if (bus->drv_cc.nflash.present) {
 365                 err = platform_device_register(&bcma_nflash_dev);
 366                 if (err)
 367                         bcma_err(bus, "Error registering NAND flash\n");
 368         }
 369 #endif
 370         err = bcma_gpio_init(&bus->drv_cc);
 371         if (err == -ENOTSUPP)
 372                 bcma_debug(bus, "GPIO driver not activated\n");
 373         else if (err)
 374                 bcma_err(bus, "Error registering GPIO driver: %i\n", err);
 375
 376         if (bus->hosttype == BCMA_HOSTTYPE_SOC) {
 377                 err = bcma_chipco_watchdog_register(&bus->drv_cc);
 378                 if (err)
 379                         bcma_err(bus, "Error registering watchdog driver\n");
 380         }
 381
 382         return 0;
 383 }
 384
 385 void bcma_unregister_cores(struct bcma_bus *bus)
 386 {
 387         struct bcma_device *core, *tmp;
 388
 389         list_for_each_entry_safe(core, tmp, &bus->cores, list) {
 390                 if (!core->dev_registered)
 391                         continue;
 392                 list_del(&core->list);
 393                 device_unregister(&core->dev);
 394         }
 395         if (bus->hosttype == BCMA_HOSTTYPE_SOC)
 396                 platform_device_unregister(bus->drv_cc.watchdog);
 397
 398         /* Now noone uses internally-handled cores, we can free them */
 399         list_for_each_entry_safe(core, tmp, &bus->cores, list) {
 400                 list_del(&core->list);
 401                 kfree(core);
 402         }
 403 }
 404
 405 int bcma_bus_register(struct bcma_bus *bus)
 406 {
 407         int err;
 408         struct bcma_device *core;
 409         struct device *dev;
 410
 411         /* Scan for devices (cores) */
 412         err = bcma_bus_scan(bus);
 413         if (err) {
 414                 bcma_err(bus, "Failed to scan: %d\n", err);
 415                 return err;
 416         }
 417
 418         /* Early init CC core */
 419         core = bcma_find_core(bus, bcma_cc_core_id(bus));
 420         if (core) {
 421                 bus->drv_cc.core = core;
 422                 bcma_core_chipcommon_early_init(&bus->drv_cc);
 423         }
 424
 425         /* Early init PCIE core */
 426         core = bcma_find_core(bus, BCMA_CORE_PCIE);
 427         if (core) {
 428                 bus->drv_pci[0].core = core;
 429                 bcma_core_pci_early_init(&bus->drv_pci[0]);
 430         }
 431
 432         dev = bcma_bus_get_host_dev(bus);
 433         if (dev) {
 434                 of_platform_default_populate(dev->of_node, NULL, dev);
 435         }
 436
 437         /* Cores providing flash access go before SPROM init */
 438         list_for_each_entry(core, &bus->cores, list) {
 439                 if (bcma_is_core_needed_early(core->id.id))
 440                         bcma_register_core(bus, core);
 441         }
 442
 443         /* Try to get SPROM */
 444         err = bcma_sprom_get(bus);
 445         if (err == -ENOENT) {
 446                 bcma_err(bus, "No SPROM available\n");
 447         } else if (err)
 448                 bcma_err(bus, "Failed to get SPROM: %d\n", err);
 449
 450         /* Init CC core */
 451         core = bcma_find_core(bus, bcma_cc_core_id(bus));
 452         if (core) {
 453                 bus->drv_cc.core = core;
 454                 bcma_core_chipcommon_init(&bus->drv_cc);
 455         }
 456
 457         /* Init CC core */
 458         core = bcma_find_core(bus, BCMA_CORE_NS_CHIPCOMMON_B);
 459         if (core) {
 460                 bus->drv_cc_b.core = core;
 461                 bcma_core_chipcommon_b_init(&bus->drv_cc_b);
 462         }
 463
 464         /* Init MIPS core */
 465         core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
 466         if (core) {
 467                 bus->drv_mips.core = core;
 468                 bcma_core_mips_init(&bus->drv_mips);
 469         }
 470
 471         /* Init PCIE core */
 472         core = bcma_find_core_unit(bus, BCMA_CORE_PCIE, 0);
 473         if (core) {
 474                 bus->drv_pci[0].core = core;
 475                 bcma_core_pci_init(&bus->drv_pci[0]);
 476         }
 477
 478         /* Init PCIE core */
 479         core = bcma_find_core_unit(bus, BCMA_CORE_PCIE, 1);
 480         if (core) {
 481                 bus->drv_pci[1].core = core;
 482                 bcma_core_pci_init(&bus->drv_pci[1]);
 483         }
 484
 485         /* Init PCIe Gen 2 core */
 486         core = bcma_find_core_unit(bus, BCMA_CORE_PCIE2, 0);
 487         if (core) {
 488                 bus->drv_pcie2.core = core;
 489                 bcma_core_pcie2_init(&bus->drv_pcie2);
 490         }
 491
 492         /* Init GBIT MAC COMMON core */
 493         core = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON);
 494         if (core) {
 495                 bus->drv_gmac_cmn.core = core;
 496                 bcma_core_gmac_cmn_init(&bus->drv_gmac_cmn);
 497         }
 498
 499         /* Register found cores */
 500         bcma_register_devices(bus);
 501
 502         bcma_info(bus, "Bus registered\n");
 503
 504         return 0;
 505 }
 506
 507 void bcma_bus_unregister(struct bcma_bus *bus)
 508 {
 509         int err;
 510
 511         err = bcma_gpio_unregister(&bus->drv_cc);
 512         if (err == -EBUSY)
 513                 bcma_err(bus, "Some GPIOs are still in use.\n");
 514         else if (err)
 515                 bcma_err(bus, "Can not unregister GPIO driver: %i\n", err);
 516
 517         bcma_core_chipcommon_b_free(&bus->drv_cc_b);
 518
 519         bcma_unregister_cores(bus);
 520 }
 521
 522 /*
 523  * This is a special version of bus registration function designed for SoCs.
 524  * It scans bus and performs basic initialization of main cores only.
 525  * Please note it requires memory allocation, however it won't try to sleep.
 526  */
 527 int __init bcma_bus_early_register(struct bcma_bus *bus)
 528 {
 529         int err;
 530         struct bcma_device *core;
 531
 532         /* Scan for devices (cores) */
 533         err = bcma_bus_scan(bus);
 534         if (err) {
 535                 bcma_err(bus, "Failed to scan bus: %d\n", err);
 536                 return -1;
 537         }
 538
 539         /* Early init CC core */
 540         core = bcma_find_core(bus, bcma_cc_core_id(bus));
 541         if (core) {
 542                 bus->drv_cc.core = core;
 543                 bcma_core_chipcommon_early_init(&bus->drv_cc);
 544         }
 545
 546         /* Early init MIPS core */
 547         core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
 548         if (core) {
 549                 bus->drv_mips.core = core;
 550                 bcma_core_mips_early_init(&bus->drv_mips);
 551         }
 552
 553         bcma_info(bus, "Early bus registered\n");
 554
 555         return 0;
 556 }
 557
 558 #ifdef CONFIG_PM
 559 int bcma_bus_suspend(struct bcma_bus *bus)
 560 {
 561         struct bcma_device *core;
 562
 563         list_for_each_entry(core, &bus->cores, list) {
 564                 struct device_driver *drv = core->dev.driver;
 565                 if (drv) {
 566                         struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
 567                         if (adrv->suspend)
 568                                 adrv->suspend(core);
 569                 }
 570         }
 571         return 0;
 572 }
 573
 574 int bcma_bus_resume(struct bcma_bus *bus)
 575 {
 576         struct bcma_device *core;
 577
 578         /* Init CC core */
 579         if (bus->drv_cc.core) {
 580                 bus->drv_cc.setup_done = false;
 581                 bcma_core_chipcommon_init(&bus->drv_cc);
 582         }
 583
 584         list_for_each_entry(core, &bus->cores, list) {
 585                 struct device_driver *drv = core->dev.driver;
 586                 if (drv) {
 587                         struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
 588                         if (adrv->resume)
 589                                 adrv->resume(core);
 590                 }
 591         }
 592
 593         return 0;
 594 }
 595 #endif
 596
 597 int __bcma_driver_register(struct bcma_driver *drv, struct module *owner)
 598 {
 599         drv->drv.name = drv->name;
 600         drv->drv.bus = &bcma_bus_type;
 601         drv->drv.owner = owner;
 602
 603         return driver_register(&drv->drv);
 604 }
 605 EXPORT_SYMBOL_GPL(__bcma_driver_register);
 606
 607 void bcma_driver_unregister(struct bcma_driver *drv)
 608 {
 609         driver_unregister(&drv->drv);
 610 }
 611 EXPORT_SYMBOL_GPL(bcma_driver_unregister);
 612
 613 static int bcma_bus_match(struct device *dev, struct device_driver *drv)
 614 {
 615         struct bcma_device *core = container_of(dev, struct bcma_device, dev);
 616         struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
 617         const struct bcma_device_id *cid = &core->id;
 618         const struct bcma_device_id *did;
 619
 620         for (did = adrv->id_table; did->manuf || did->id || did->rev; did++) {
 621             if ((did->manuf == cid->manuf || did->manuf == BCMA_ANY_MANUF) &&
 622                 (did->id == cid->id || did->id == BCMA_ANY_ID) &&
 623                 (did->rev == cid->rev || did->rev == BCMA_ANY_REV) &&
 624                 (did->class == cid->class || did->class == BCMA_ANY_CLASS))
 625                         return 1;
 626         }
 627         return 0;
 628 }
 629
 630 static int bcma_device_probe(struct device *dev)
 631 {
 632         struct bcma_device *core = container_of(dev, struct bcma_device, dev);
 633         struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
 634                                                drv);
 635         int err = 0;
 636
 637         get_device(dev);
 638         if (adrv->probe)
 639                 err = adrv->probe(core);
 640         if (err)
 641                 put_device(dev);
 642
 643         return err;
 644 }
 645
 646 static int bcma_device_remove(struct device *dev)
 647 {
 648         struct bcma_device *core = container_of(dev, struct bcma_device, dev);
 649         struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
 650                                                drv);
 651
 652         if (adrv->remove)
 653                 adrv->remove(core);
 654         put_device(dev);
 655
 656         return 0;
 657 }
 658
 659 static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env)
 660 {
 661         struct bcma_device *core = container_of(dev, struct bcma_device, dev);
 662
 663         return add_uevent_var(env,
 664                               "MODALIAS=bcma:m%04Xid%04Xrev%02Xcl%02X",
 665                               core->id.manuf, core->id.id,
 666                               core->id.rev, core->id.class);
 667 }
 668
 669 static unsigned int bcma_bus_registered;
 670
 671 /*
 672  * If built-in, bus has to be registered early, before any driver calls
 673  * bcma_driver_register.
 674  * Otherwise registering driver would trigger BUG in driver_register.
 675  */
 676 static int __init bcma_init_bus_register(void)
 677 {
 678         int err;
 679
 680         if (bcma_bus_registered)
 681                 return 0;
 682
 683         err = bus_register(&bcma_bus_type);
 684         if (!err)
 685                 bcma_bus_registered = 1;
 686
 687         return err;
 688 }
 689 #ifndef MODULE
 690 fs_initcall(bcma_init_bus_register);
 691 #endif
 692
 693 /* Main initialization has to be done with SPI/mtd/NAND/SPROM available */
 694 static int __init bcma_modinit(void)
 695 {
 696         int err;
 697
 698         err = bcma_init_bus_register();
 699         if (err)
 700                 return err;
 701
 702         err = bcma_host_soc_register_driver();
 703         if (err) {
 704                 pr_err("SoC host initialization failed\n");
 705                 err = 0;
 706         }
 707 #ifdef CONFIG_BCMA_HOST_PCI
 708         err = bcma_host_pci_init();
 709         if (err) {
 710                 pr_err("PCI host initialization failed\n");
 711                 err = 0;
 712         }
 713 #endif
 714
 715         return err;
 716 }
 717 module_init(bcma_modinit);
 718
 719 static void __exit bcma_modexit(void)
 720 {
 721 #ifdef CONFIG_BCMA_HOST_PCI
 722         bcma_host_pci_exit();
 723 #endif
 724         bcma_host_soc_unregister_driver();
 725         bus_unregister(&bcma_bus_type);
 726 }
 727 module_exit(bcma_modexit)