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 platform_device *parent,
 140                                                      struct bcma_device *core)
 141 {
 142         struct device_node *node;
 143         u64 size;
 144         const __be32 *reg;
 145
 146         if (!parent || !parent->dev.of_node)
 147                 return NULL;
 148
 149         for_each_child_of_node(parent->dev.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 platform_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->dev.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 platform_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 || !parent->dev.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 platform_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
 214 unsigned int bcma_core_irq(struct bcma_device *core, int num)
 215 {
 216         struct bcma_bus *bus = core->bus;
 217         unsigned int mips_irq;
 218
 219         switch (bus->hosttype) {
 220         case BCMA_HOSTTYPE_PCI:
 221                 return bus->host_pci->irq;
 222         case BCMA_HOSTTYPE_SOC:
 223                 if (bus->drv_mips.core && num == 0) {
 224                         mips_irq = bcma_core_mips_irq(core);
 225                         return mips_irq <= 4 ? mips_irq + 2 : 0;
 226                 }
 227                 if (bus->host_pdev)
 228                         return bcma_of_get_irq(bus->host_pdev, core, num);
 229                 return 0;
 230         case BCMA_HOSTTYPE_SDIO:
 231                 return 0;
 232         }
 233
 234         return 0;
 235 }
 236 EXPORT_SYMBOL(bcma_core_irq);
 237
 238 void bcma_prepare_core(struct bcma_bus *bus, struct bcma_device *core)
 239 {
 240         core->dev.release = bcma_release_core_dev;
 241         core->dev.bus = &bcma_bus_type;
 242         dev_set_name(&core->dev, "bcma%d:%d", bus->num, core->core_index);
 243
 244         switch (bus->hosttype) {
 245         case BCMA_HOSTTYPE_PCI:
 246                 core->dev.parent = &bus->host_pci->dev;
 247                 core->dma_dev = &bus->host_pci->dev;
 248                 core->irq = bus->host_pci->irq;
 249                 break;
 250         case BCMA_HOSTTYPE_SOC:
 251                 core->dev.dma_mask = &core->dev.coherent_dma_mask;
 252                 if (bus->host_pdev) {
 253                         core->dma_dev = &bus->host_pdev->dev;
 254                         core->dev.parent = &bus->host_pdev->dev;
 255                         bcma_of_fill_device(bus->host_pdev, core);
 256                 } else {
 257                         core->dma_dev = &core->dev;
 258                 }
 259                 break;
 260         case BCMA_HOSTTYPE_SDIO:
 261                 break;
 262         }
 263 }
 264
 265 struct device *bcma_bus_get_host_dev(struct bcma_bus *bus)
 266 {
 267         switch (bus->hosttype) {
 268         case BCMA_HOSTTYPE_PCI:
 269                 if (bus->host_pci)
 270                         return &bus->host_pci->dev;
 271                 else
 272                         return NULL;
 273         case BCMA_HOSTTYPE_SOC:
 274                 if (bus->host_pdev)
 275                         return &bus->host_pdev->dev;
 276                 else
 277                         return NULL;
 278         case BCMA_HOSTTYPE_SDIO:
 279                 if (bus->host_sdio)
 280                         return &bus->host_sdio->dev;
 281                 else
 282                         return NULL;
 283         }
 284         return NULL;
 285 }
 286
 287 void bcma_init_bus(struct bcma_bus *bus)
 288 {
 289         mutex_lock(&bcma_buses_mutex);
 290         bus->num = bcma_bus_next_num++;
 291         mutex_unlock(&bcma_buses_mutex);
 292
 293         INIT_LIST_HEAD(&bus->cores);
 294         bus->nr_cores = 0;
 295
 296         bcma_detect_chip(bus);
 297 }
 298
 299 static void bcma_register_core(struct bcma_bus *bus, struct bcma_device *core)
 300 {
 301         int err;
 302
 303         err = device_register(&core->dev);
 304         if (err) {
 305                 bcma_err(bus, "Could not register dev for core 0x%03X\n",
 306                          core->id.id);
 307                 put_device(&core->dev);
 308                 return;
 309         }
 310         core->dev_registered = true;
 311 }
 312
 313 static int bcma_register_devices(struct bcma_bus *bus)
 314 {
 315         struct bcma_device *core;
 316         int err;
 317
 318         list_for_each_entry(core, &bus->cores, list) {
 319                 /* We support that cores ourself */
 320                 switch (core->id.id) {
 321                 case BCMA_CORE_4706_CHIPCOMMON:
 322                 case BCMA_CORE_CHIPCOMMON:
 323                 case BCMA_CORE_NS_CHIPCOMMON_B:
 324                 case BCMA_CORE_PCI:
 325                 case BCMA_CORE_PCIE:
 326                 case BCMA_CORE_PCIE2:
 327                 case BCMA_CORE_MIPS_74K:
 328                 case BCMA_CORE_4706_MAC_GBIT_COMMON:
 329                         continue;
 330                 }
 331
 332                 /* Early cores were already registered */
 333                 if (bcma_is_core_needed_early(core->id.id))
 334                         continue;
 335
 336                 /* Only first GMAC core on BCM4706 is connected and working */
 337                 if (core->id.id == BCMA_CORE_4706_MAC_GBIT &&
 338                     core->core_unit > 0)
 339                         continue;
 340
 341                 bcma_register_core(bus, core);
 342         }
 343
 344 #ifdef CONFIG_BCMA_PFLASH
 345         if (bus->drv_cc.pflash.present) {
 346                 err = platform_device_register(&bcma_pflash_dev);
 347                 if (err)
 348                         bcma_err(bus, "Error registering parallel flash\n");
 349         }
 350 #endif
 351
 352 #ifdef CONFIG_BCMA_SFLASH
 353         if (bus->drv_cc.sflash.present) {
 354                 err = platform_device_register(&bcma_sflash_dev);
 355                 if (err)
 356                         bcma_err(bus, "Error registering serial flash\n");
 357         }
 358 #endif
 359
 360 #ifdef CONFIG_BCMA_NFLASH
 361         if (bus->drv_cc.nflash.present) {
 362                 err = platform_device_register(&bcma_nflash_dev);
 363                 if (err)
 364                         bcma_err(bus, "Error registering NAND flash\n");
 365         }
 366 #endif
 367         err = bcma_gpio_init(&bus->drv_cc);
 368         if (err == -ENOTSUPP)
 369                 bcma_debug(bus, "GPIO driver not activated\n");
 370         else if (err)
 371                 bcma_err(bus, "Error registering GPIO driver: %i\n", err);
 372
 373         if (bus->hosttype == BCMA_HOSTTYPE_SOC) {
 374                 err = bcma_chipco_watchdog_register(&bus->drv_cc);
 375                 if (err)
 376                         bcma_err(bus, "Error registering watchdog driver\n");
 377         }
 378
 379         return 0;
 380 }
 381
 382 void bcma_unregister_cores(struct bcma_bus *bus)
 383 {
 384         struct bcma_device *core, *tmp;
 385
 386         list_for_each_entry_safe(core, tmp, &bus->cores, list) {
 387                 if (!core->dev_registered)
 388                         continue;
 389                 list_del(&core->list);
 390                 device_unregister(&core->dev);
 391         }
 392         if (bus->hosttype == BCMA_HOSTTYPE_SOC)
 393                 platform_device_unregister(bus->drv_cc.watchdog);
 394
 395         /* Now noone uses internally-handled cores, we can free them */
 396         list_for_each_entry_safe(core, tmp, &bus->cores, list) {
 397                 list_del(&core->list);
 398                 kfree(core);
 399         }
 400 }
 401
 402 int bcma_bus_register(struct bcma_bus *bus)
 403 {
 404         int err;
 405         struct bcma_device *core;
 406         struct device *dev;
 407
 408         /* Scan for devices (cores) */
 409         err = bcma_bus_scan(bus);
 410         if (err) {
 411                 bcma_err(bus, "Failed to scan: %d\n", err);
 412                 return err;
 413         }
 414
 415         /* Early init CC core */
 416         core = bcma_find_core(bus, bcma_cc_core_id(bus));
 417         if (core) {
 418                 bus->drv_cc.core = core;
 419                 bcma_core_chipcommon_early_init(&bus->drv_cc);
 420         }
 421
 422         /* Early init PCIE core */
 423         core = bcma_find_core(bus, BCMA_CORE_PCIE);
 424         if (core) {
 425                 bus->drv_pci[0].core = core;
 426                 bcma_core_pci_early_init(&bus->drv_pci[0]);
 427         }
 428
 429         dev = bcma_bus_get_host_dev(bus);
 430         if (dev) {
 431                 of_platform_default_populate(dev->of_node, NULL, dev);
 432         }
 433
 434         /* Cores providing flash access go before SPROM init */
 435         list_for_each_entry(core, &bus->cores, list) {
 436                 if (bcma_is_core_needed_early(core->id.id))
 437                         bcma_register_core(bus, core);
 438         }
 439
 440         /* Try to get SPROM */
 441         err = bcma_sprom_get(bus);
 442         if (err == -ENOENT) {
 443                 bcma_err(bus, "No SPROM available\n");
 444         } else if (err)
 445                 bcma_err(bus, "Failed to get SPROM: %d\n", err);
 446
 447         /* Init CC core */
 448         core = bcma_find_core(bus, bcma_cc_core_id(bus));
 449         if (core) {
 450                 bus->drv_cc.core = core;
 451                 bcma_core_chipcommon_init(&bus->drv_cc);
 452         }
 453
 454         /* Init CC core */
 455         core = bcma_find_core(bus, BCMA_CORE_NS_CHIPCOMMON_B);
 456         if (core) {
 457                 bus->drv_cc_b.core = core;
 458                 bcma_core_chipcommon_b_init(&bus->drv_cc_b);
 459         }
 460
 461         /* Init MIPS core */
 462         core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
 463         if (core) {
 464                 bus->drv_mips.core = core;
 465                 bcma_core_mips_init(&bus->drv_mips);
 466         }
 467
 468         /* Init PCIE core */
 469         core = bcma_find_core_unit(bus, BCMA_CORE_PCIE, 0);
 470         if (core) {
 471                 bus->drv_pci[0].core = core;
 472                 bcma_core_pci_init(&bus->drv_pci[0]);
 473         }
 474
 475         /* Init PCIE core */
 476         core = bcma_find_core_unit(bus, BCMA_CORE_PCIE, 1);
 477         if (core) {
 478                 bus->drv_pci[1].core = core;
 479                 bcma_core_pci_init(&bus->drv_pci[1]);
 480         }
 481
 482         /* Init PCIe Gen 2 core */
 483         core = bcma_find_core_unit(bus, BCMA_CORE_PCIE2, 0);
 484         if (core) {
 485                 bus->drv_pcie2.core = core;
 486                 bcma_core_pcie2_init(&bus->drv_pcie2);
 487         }
 488
 489         /* Init GBIT MAC COMMON core */
 490         core = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON);
 491         if (core) {
 492                 bus->drv_gmac_cmn.core = core;
 493                 bcma_core_gmac_cmn_init(&bus->drv_gmac_cmn);
 494         }
 495
 496         /* Register found cores */
 497         bcma_register_devices(bus);
 498
 499         bcma_info(bus, "Bus registered\n");
 500
 501         return 0;
 502 }
 503
 504 void bcma_bus_unregister(struct bcma_bus *bus)
 505 {
 506         int err;
 507
 508         err = bcma_gpio_unregister(&bus->drv_cc);
 509         if (err == -EBUSY)
 510                 bcma_err(bus, "Some GPIOs are still in use.\n");
 511         else if (err)
 512                 bcma_err(bus, "Can not unregister GPIO driver: %i\n", err);
 513
 514         bcma_core_chipcommon_b_free(&bus->drv_cc_b);
 515
 516         bcma_unregister_cores(bus);
 517 }
 518
 519 /*
 520  * This is a special version of bus registration function designed for SoCs.
 521  * It scans bus and performs basic initialization of main cores only.
 522  * Please note it requires memory allocation, however it won't try to sleep.
 523  */
 524 int __init bcma_bus_early_register(struct bcma_bus *bus)
 525 {
 526         int err;
 527         struct bcma_device *core;
 528
 529         /* Scan for devices (cores) */
 530         err = bcma_bus_scan(bus);
 531         if (err) {
 532                 bcma_err(bus, "Failed to scan bus: %d\n", err);
 533                 return -1;
 534         }
 535
 536         /* Early init CC core */
 537         core = bcma_find_core(bus, bcma_cc_core_id(bus));
 538         if (core) {
 539                 bus->drv_cc.core = core;
 540                 bcma_core_chipcommon_early_init(&bus->drv_cc);
 541         }
 542
 543         /* Early init MIPS core */
 544         core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
 545         if (core) {
 546                 bus->drv_mips.core = core;
 547                 bcma_core_mips_early_init(&bus->drv_mips);
 548         }
 549
 550         bcma_info(bus, "Early bus registered\n");
 551
 552         return 0;
 553 }
 554
 555 #ifdef CONFIG_PM
 556 int bcma_bus_suspend(struct bcma_bus *bus)
 557 {
 558         struct bcma_device *core;
 559
 560         list_for_each_entry(core, &bus->cores, list) {
 561                 struct device_driver *drv = core->dev.driver;
 562                 if (drv) {
 563                         struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
 564                         if (adrv->suspend)
 565                                 adrv->suspend(core);
 566                 }
 567         }
 568         return 0;
 569 }
 570
 571 int bcma_bus_resume(struct bcma_bus *bus)
 572 {
 573         struct bcma_device *core;
 574
 575         /* Init CC core */
 576         if (bus->drv_cc.core) {
 577                 bus->drv_cc.setup_done = false;
 578                 bcma_core_chipcommon_init(&bus->drv_cc);
 579         }
 580
 581         list_for_each_entry(core, &bus->cores, list) {
 582                 struct device_driver *drv = core->dev.driver;
 583                 if (drv) {
 584                         struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
 585                         if (adrv->resume)
 586                                 adrv->resume(core);
 587                 }
 588         }
 589
 590         return 0;
 591 }
 592 #endif
 593
 594 int __bcma_driver_register(struct bcma_driver *drv, struct module *owner)
 595 {
 596         drv->drv.name = drv->name;
 597         drv->drv.bus = &bcma_bus_type;
 598         drv->drv.owner = owner;
 599
 600         return driver_register(&drv->drv);
 601 }
 602 EXPORT_SYMBOL_GPL(__bcma_driver_register);
 603
 604 void bcma_driver_unregister(struct bcma_driver *drv)
 605 {
 606         driver_unregister(&drv->drv);
 607 }
 608 EXPORT_SYMBOL_GPL(bcma_driver_unregister);
 609
 610 static int bcma_bus_match(struct device *dev, struct device_driver *drv)
 611 {
 612         struct bcma_device *core = container_of(dev, struct bcma_device, dev);
 613         struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
 614         const struct bcma_device_id *cid = &core->id;
 615         const struct bcma_device_id *did;
 616
 617         for (did = adrv->id_table; did->manuf || did->id || did->rev; did++) {
 618             if ((did->manuf == cid->manuf || did->manuf == BCMA_ANY_MANUF) &&
 619                 (did->id == cid->id || did->id == BCMA_ANY_ID) &&
 620                 (did->rev == cid->rev || did->rev == BCMA_ANY_REV) &&
 621                 (did->class == cid->class || did->class == BCMA_ANY_CLASS))
 622                         return 1;
 623         }
 624         return 0;
 625 }
 626
 627 static int bcma_device_probe(struct device *dev)
 628 {
 629         struct bcma_device *core = container_of(dev, struct bcma_device, dev);
 630         struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
 631                                                drv);
 632         int err = 0;
 633
 634         if (adrv->probe)
 635                 err = adrv->probe(core);
 636
 637         return err;
 638 }
 639
 640 static int bcma_device_remove(struct device *dev)
 641 {
 642         struct bcma_device *core = container_of(dev, struct bcma_device, dev);
 643         struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
 644                                                drv);
 645
 646         if (adrv->remove)
 647                 adrv->remove(core);
 648
 649         return 0;
 650 }
 651
 652 static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env)
 653 {
 654         struct bcma_device *core = container_of(dev, struct bcma_device, dev);
 655
 656         return add_uevent_var(env,
 657                               "MODALIAS=bcma:m%04Xid%04Xrev%02Xcl%02X",
 658                               core->id.manuf, core->id.id,
 659                               core->id.rev, core->id.class);
 660 }
 661
 662 static unsigned int bcma_bus_registered;
 663
 664 /*
 665  * If built-in, bus has to be registered early, before any driver calls
 666  * bcma_driver_register.
 667  * Otherwise registering driver would trigger BUG in driver_register.
 668  */
 669 static int __init bcma_init_bus_register(void)
 670 {
 671         int err;
 672
 673         if (bcma_bus_registered)
 674                 return 0;
 675
 676         err = bus_register(&bcma_bus_type);
 677         if (!err)
 678                 bcma_bus_registered = 1;
 679
 680         return err;
 681 }
 682 #ifndef MODULE
 683 fs_initcall(bcma_init_bus_register);
 684 #endif
 685
 686 /* Main initialization has to be done with SPI/mtd/NAND/SPROM available */
 687 static int __init bcma_modinit(void)
 688 {
 689         int err;
 690
 691         err = bcma_init_bus_register();
 692         if (err)
 693                 return err;
 694
 695         err = bcma_host_soc_register_driver();
 696         if (err) {
 697                 pr_err("SoC host initialization failed\n");
 698                 err = 0;
 699         }
 700 #ifdef CONFIG_BCMA_HOST_PCI
 701         err = bcma_host_pci_init();
 702         if (err) {
 703                 pr_err("PCI host initialization failed\n");
 704                 err = 0;
 705         }
 706 #endif
 707
 708         return err;
 709 }
 710 module_init(bcma_modinit);
 711
 712 static void __exit bcma_modexit(void)
 713 {
 714 #ifdef CONFIG_BCMA_HOST_PCI
 715         bcma_host_pci_exit();
 716 #endif
 717         bcma_host_soc_unregister_driver();
 718         bus_unregister(&bcma_bus_type);
 719 }
 720 module_exit(bcma_modexit)