git.oblomov.eu Git - linux-2.6/blob - arch/powerpc/sysdev/fsl_soc.c

   1 /*
   2  * FSL SoC setup code
   3  *
   4  * Maintained by Kumar Gala (see MAINTAINERS for contact information)
   5  *
   6  * 2006 (c) MontaVista Software, Inc.
   7  * Vitaly Bordug <vbordug@ru.mvista.com>
   8  *
   9  * This program is free software; you can redistribute  it and/or modify it
  10  * under  the terms of  the GNU General  Public License as published by the
  11  * Free Software Foundation;  either version 2 of the  License, or (at your
  12  * option) any later version.
  13  */
  14
  15 #include <linux/stddef.h>
  16 #include <linux/kernel.h>
  17 #include <linux/init.h>
  18 #include <linux/errno.h>
  19 #include <linux/major.h>
  20 #include <linux/delay.h>
  21 #include <linux/irq.h>
  22 #include <linux/module.h>
  23 #include <linux/device.h>
  24 #include <linux/platform_device.h>
  25 #include <linux/of_platform.h>
  26 #include <linux/phy.h>
  27 #include <linux/phy_fixed.h>
  28 #include <linux/spi/spi.h>
  29 #include <linux/fsl_devices.h>
  30 #include <linux/fs_enet_pd.h>
  31 #include <linux/fs_uart_pd.h>
  32
  33 #include <asm/system.h>
  34 #include <asm/atomic.h>
  35 #include <asm/io.h>
  36 #include <asm/irq.h>
  37 #include <asm/time.h>
  38 #include <asm/prom.h>
  39 #include <sysdev/fsl_soc.h>
  40 #include <mm/mmu_decl.h>
  41 #include <asm/cpm2.h>
  42
  43 extern void init_fcc_ioports(struct fs_platform_info*);
  44 extern void init_fec_ioports(struct fs_platform_info*);
  45 extern void init_smc_ioports(struct fs_uart_platform_info*);
  46 static phys_addr_t immrbase = -1;
  47
  48 phys_addr_t get_immrbase(void)
  49 {
  50         struct device_node *soc;
  51
  52         if (immrbase != -1)
  53                 return immrbase;
  54
  55         soc = of_find_node_by_type(NULL, "soc");
  56         if (soc) {
  57                 int size;
  58                 u32 naddr;
  59                 const u32 *prop = of_get_property(soc, "#address-cells", &size);
  60
  61                 if (prop && size == 4)
  62                         naddr = *prop;
  63                 else
  64                         naddr = 2;
  65
  66                 prop = of_get_property(soc, "ranges", &size);
  67                 if (prop)
  68                         immrbase = of_translate_address(soc, prop + naddr);
  69
  70                 of_node_put(soc);
  71         }
  72
  73         return immrbase;
  74 }
  75
  76 EXPORT_SYMBOL(get_immrbase);
  77
  78 static u32 sysfreq = -1;
  79
  80 u32 fsl_get_sys_freq(void)
  81 {
  82         struct device_node *soc;
  83         const u32 *prop;
  84         int size;
  85
  86         if (sysfreq != -1)
  87                 return sysfreq;
  88
  89         soc = of_find_node_by_type(NULL, "soc");
  90         if (!soc)
  91                 return -1;
  92
  93         prop = of_get_property(soc, "clock-frequency", &size);
  94         if (!prop || size != sizeof(*prop) || *prop == 0)
  95                 prop = of_get_property(soc, "bus-frequency", &size);
  96
  97         if (prop && size == sizeof(*prop))
  98                 sysfreq = *prop;
  99
 100         of_node_put(soc);
 101         return sysfreq;
 102 }
 103 EXPORT_SYMBOL(fsl_get_sys_freq);
 104
 105 #if defined(CONFIG_CPM2) || defined(CONFIG_QUICC_ENGINE) || defined(CONFIG_8xx)
 106
 107 static u32 brgfreq = -1;
 108
 109 u32 get_brgfreq(void)
 110 {
 111         struct device_node *node;
 112         const unsigned int *prop;
 113         int size;
 114
 115         if (brgfreq != -1)
 116                 return brgfreq;
 117
 118         node = of_find_compatible_node(NULL, NULL, "fsl,cpm-brg");
 119         if (node) {
 120                 prop = of_get_property(node, "clock-frequency", &size);
 121                 if (prop && size == 4)
 122                         brgfreq = *prop;
 123
 124                 of_node_put(node);
 125                 return brgfreq;
 126         }
 127
 128         /* Legacy device binding -- will go away when no users are left. */
 129         node = of_find_node_by_type(NULL, "cpm");
 130         if (!node)
 131                 node = of_find_compatible_node(NULL, NULL, "fsl,qe");
 132         if (!node)
 133                 node = of_find_node_by_type(NULL, "qe");
 134
 135         if (node) {
 136                 prop = of_get_property(node, "brg-frequency", &size);
 137                 if (prop && size == 4)
 138                         brgfreq = *prop;
 139
 140                 if (brgfreq == -1 || brgfreq == 0) {
 141                         prop = of_get_property(node, "bus-frequency", &size);
 142                         if (prop && size == 4)
 143                                 brgfreq = *prop / 2;
 144                 }
 145                 of_node_put(node);
 146         }
 147
 148         return brgfreq;
 149 }
 150
 151 EXPORT_SYMBOL(get_brgfreq);
 152
 153 static u32 fs_baudrate = -1;
 154
 155 u32 get_baudrate(void)
 156 {
 157         struct device_node *node;
 158
 159         if (fs_baudrate != -1)
 160                 return fs_baudrate;
 161
 162         node = of_find_node_by_type(NULL, "serial");
 163         if (node) {
 164                 int size;
 165                 const unsigned int *prop = of_get_property(node,
 166                                 "current-speed", &size);
 167
 168                 if (prop)
 169                         fs_baudrate = *prop;
 170                 of_node_put(node);
 171         }
 172
 173         return fs_baudrate;
 174 }
 175
 176 EXPORT_SYMBOL(get_baudrate);
 177 #endif /* CONFIG_CPM2 */
 178
 179 #ifdef CONFIG_FIXED_PHY
 180 static int __init of_add_fixed_phys(void)
 181 {
 182         int ret;
 183         struct device_node *np;
 184         u32 *fixed_link;
 185         struct fixed_phy_status status = {};
 186
 187         for_each_node_by_name(np, "ethernet") {
 188                 fixed_link  = (u32 *)of_get_property(np, "fixed-link", NULL);
 189                 if (!fixed_link)
 190                         continue;
 191
 192                 status.link = 1;
 193                 status.duplex = fixed_link[1];
 194                 status.speed = fixed_link[2];
 195                 status.pause = fixed_link[3];
 196                 status.asym_pause = fixed_link[4];
 197
 198                 ret = fixed_phy_add(PHY_POLL, fixed_link[0], &status);
 199                 if (ret) {
 200                         of_node_put(np);
 201                         return ret;
 202                 }
 203         }
 204
 205         return 0;
 206 }
 207 arch_initcall(of_add_fixed_phys);
 208 #endif /* CONFIG_FIXED_PHY */
 209
 210 static int __init gfar_mdio_of_init(void)
 211 {
 212         struct device_node *np = NULL;
 213         struct platform_device *mdio_dev;
 214         struct resource res;
 215         int ret;
 216
 217         np = of_find_compatible_node(np, NULL, "fsl,gianfar-mdio");
 218
 219         /* try the deprecated version */
 220         if (!np)
 221                 np = of_find_compatible_node(np, "mdio", "gianfar");
 222
 223         if (np) {
 224                 int k;
 225                 struct device_node *child = NULL;
 226                 struct gianfar_mdio_data mdio_data;
 227
 228                 memset(&res, 0, sizeof(res));
 229                 memset(&mdio_data, 0, sizeof(mdio_data));
 230
 231                 ret = of_address_to_resource(np, 0, &res);
 232                 if (ret)
 233                         goto err;
 234
 235                 mdio_dev =
 236                     platform_device_register_simple("fsl-gianfar_mdio",
 237                                                     res.start, &res, 1);
 238                 if (IS_ERR(mdio_dev)) {
 239                         ret = PTR_ERR(mdio_dev);
 240                         goto err;
 241                 }
 242
 243                 for (k = 0; k < 32; k++)
 244                         mdio_data.irq[k] = PHY_POLL;
 245
 246                 while ((child = of_get_next_child(np, child)) != NULL) {
 247                         int irq = irq_of_parse_and_map(child, 0);
 248                         if (irq != NO_IRQ) {
 249                                 const u32 *id = of_get_property(child,
 250                                                         "reg", NULL);
 251                                 mdio_data.irq[*id] = irq;
 252                         }
 253                 }
 254
 255                 ret =
 256                     platform_device_add_data(mdio_dev, &mdio_data,
 257                                              sizeof(struct gianfar_mdio_data));
 258                 if (ret)
 259                         goto unreg;
 260         }
 261
 262         of_node_put(np);
 263         return 0;
 264
 265 unreg:
 266         platform_device_unregister(mdio_dev);
 267 err:
 268         of_node_put(np);
 269         return ret;
 270 }
 271
 272 arch_initcall(gfar_mdio_of_init);
 273
 274 static const char *gfar_tx_intr = "tx";
 275 static const char *gfar_rx_intr = "rx";
 276 static const char *gfar_err_intr = "error";
 277
 278 static int __init gfar_of_init(void)
 279 {
 280         struct device_node *np;
 281         unsigned int i;
 282         struct platform_device *gfar_dev;
 283         struct resource res;
 284         int ret;
 285
 286         for (np = NULL, i = 0;
 287              (np = of_find_compatible_node(np, "network", "gianfar")) != NULL;
 288              i++) {
 289                 struct resource r[4];
 290                 struct device_node *phy, *mdio;
 291                 struct gianfar_platform_data gfar_data;
 292                 const unsigned int *id;
 293                 const char *model;
 294                 const char *ctype;
 295                 const void *mac_addr;
 296                 const phandle *ph;
 297                 int n_res = 2;
 298
 299                 memset(r, 0, sizeof(r));
 300                 memset(&gfar_data, 0, sizeof(gfar_data));
 301
 302                 ret = of_address_to_resource(np, 0, &r[0]);
 303                 if (ret)
 304                         goto err;
 305
 306                 of_irq_to_resource(np, 0, &r[1]);
 307
 308                 model = of_get_property(np, "model", NULL);
 309
 310                 /* If we aren't the FEC we have multiple interrupts */
 311                 if (model && strcasecmp(model, "FEC")) {
 312                         r[1].name = gfar_tx_intr;
 313
 314                         r[2].name = gfar_rx_intr;
 315                         of_irq_to_resource(np, 1, &r[2]);
 316
 317                         r[3].name = gfar_err_intr;
 318                         of_irq_to_resource(np, 2, &r[3]);
 319
 320                         n_res += 2;
 321                 }
 322
 323                 gfar_dev =
 324                     platform_device_register_simple("fsl-gianfar", i, &r[0],
 325                                                     n_res);
 326
 327                 if (IS_ERR(gfar_dev)) {
 328                         ret = PTR_ERR(gfar_dev);
 329                         goto err;
 330                 }
 331
 332                 mac_addr = of_get_mac_address(np);
 333                 if (mac_addr)
 334                         memcpy(gfar_data.mac_addr, mac_addr, 6);
 335
 336                 if (model && !strcasecmp(model, "TSEC"))
 337                         gfar_data.device_flags =
 338                             FSL_GIANFAR_DEV_HAS_GIGABIT |
 339                             FSL_GIANFAR_DEV_HAS_COALESCE |
 340                             FSL_GIANFAR_DEV_HAS_RMON |
 341                             FSL_GIANFAR_DEV_HAS_MULTI_INTR;
 342                 if (model && !strcasecmp(model, "eTSEC"))
 343                         gfar_data.device_flags =
 344                             FSL_GIANFAR_DEV_HAS_GIGABIT |
 345                             FSL_GIANFAR_DEV_HAS_COALESCE |
 346                             FSL_GIANFAR_DEV_HAS_RMON |
 347                             FSL_GIANFAR_DEV_HAS_MULTI_INTR |
 348                             FSL_GIANFAR_DEV_HAS_CSUM |
 349                             FSL_GIANFAR_DEV_HAS_VLAN |
 350                             FSL_GIANFAR_DEV_HAS_EXTENDED_HASH;
 351
 352                 ctype = of_get_property(np, "phy-connection-type", NULL);
 353
 354                 /* We only care about rgmii-id.  The rest are autodetected */
 355                 if (ctype && !strcmp(ctype, "rgmii-id"))
 356                         gfar_data.interface = PHY_INTERFACE_MODE_RGMII_ID;
 357                 else
 358                         gfar_data.interface = PHY_INTERFACE_MODE_MII;
 359
 360                 ph = of_get_property(np, "phy-handle", NULL);
 361                 if (ph == NULL) {
 362                         u32 *fixed_link;
 363
 364                         fixed_link = (u32 *)of_get_property(np, "fixed-link",
 365                                                            NULL);
 366                         if (!fixed_link) {
 367                                 ret = -ENODEV;
 368                                 goto unreg;
 369                         }
 370
 371                         snprintf(gfar_data.bus_id, MII_BUS_ID_SIZE, "0");
 372                         gfar_data.phy_id = fixed_link[0];
 373                 } else {
 374                         phy = of_find_node_by_phandle(*ph);
 375
 376                         if (phy == NULL) {
 377                                 ret = -ENODEV;
 378                                 goto unreg;
 379                         }
 380
 381                         mdio = of_get_parent(phy);
 382
 383                         id = of_get_property(phy, "reg", NULL);
 384                         ret = of_address_to_resource(mdio, 0, &res);
 385                         if (ret) {
 386                                 of_node_put(phy);
 387                                 of_node_put(mdio);
 388                                 goto unreg;
 389                         }
 390
 391                         gfar_data.phy_id = *id;
 392                         snprintf(gfar_data.bus_id, MII_BUS_ID_SIZE, "%llx",
 393                                  (unsigned long long)res.start);
 394
 395                         of_node_put(phy);
 396                         of_node_put(mdio);
 397                 }
 398
 399                 ret =
 400                     platform_device_add_data(gfar_dev, &gfar_data,
 401                                              sizeof(struct
 402                                                     gianfar_platform_data));
 403                 if (ret)
 404                         goto unreg;
 405         }
 406
 407         return 0;
 408
 409 unreg:
 410         platform_device_unregister(gfar_dev);
 411 err:
 412         return ret;
 413 }
 414
 415 arch_initcall(gfar_of_init);
 416
 417
 418 #ifdef CONFIG_PPC_83xx
 419 static int __init mpc83xx_wdt_init(void)
 420 {
 421         struct resource r;
 422         struct device_node *np;
 423         struct platform_device *dev;
 424         u32 freq = fsl_get_sys_freq();
 425         int ret;
 426
 427         np = of_find_compatible_node(NULL, "watchdog", "mpc83xx_wdt");
 428
 429         if (!np) {
 430                 ret = -ENODEV;
 431                 goto nodev;
 432         }
 433
 434         memset(&r, 0, sizeof(r));
 435
 436         ret = of_address_to_resource(np, 0, &r);
 437         if (ret)
 438                 goto err;
 439
 440         dev = platform_device_register_simple("mpc83xx_wdt", 0, &r, 1);
 441         if (IS_ERR(dev)) {
 442                 ret = PTR_ERR(dev);
 443                 goto err;
 444         }
 445
 446         ret = platform_device_add_data(dev, &freq, sizeof(freq));
 447         if (ret)
 448                 goto unreg;
 449
 450         of_node_put(np);
 451         return 0;
 452
 453 unreg:
 454         platform_device_unregister(dev);
 455 err:
 456         of_node_put(np);
 457 nodev:
 458         return ret;
 459 }
 460
 461 arch_initcall(mpc83xx_wdt_init);
 462 #endif
 463
 464 static enum fsl_usb2_phy_modes determine_usb_phy(const char *phy_type)
 465 {
 466         if (!phy_type)
 467                 return FSL_USB2_PHY_NONE;
 468         if (!strcasecmp(phy_type, "ulpi"))
 469                 return FSL_USB2_PHY_ULPI;
 470         if (!strcasecmp(phy_type, "utmi"))
 471                 return FSL_USB2_PHY_UTMI;
 472         if (!strcasecmp(phy_type, "utmi_wide"))
 473                 return FSL_USB2_PHY_UTMI_WIDE;
 474         if (!strcasecmp(phy_type, "serial"))
 475                 return FSL_USB2_PHY_SERIAL;
 476
 477         return FSL_USB2_PHY_NONE;
 478 }
 479
 480 static int __init fsl_usb_of_init(void)
 481 {
 482         struct device_node *np;
 483         unsigned int i = 0;
 484         struct platform_device *usb_dev_mph = NULL, *usb_dev_dr_host = NULL,
 485                 *usb_dev_dr_client = NULL;
 486         int ret;
 487
 488         for_each_compatible_node(np, NULL, "fsl-usb2-mph") {
 489                 struct resource r[2];
 490                 struct fsl_usb2_platform_data usb_data;
 491                 const unsigned char *prop = NULL;
 492
 493                 memset(&r, 0, sizeof(r));
 494                 memset(&usb_data, 0, sizeof(usb_data));
 495
 496                 ret = of_address_to_resource(np, 0, &r[0]);
 497                 if (ret)
 498                         goto err;
 499
 500                 of_irq_to_resource(np, 0, &r[1]);
 501
 502                 usb_dev_mph =
 503                     platform_device_register_simple("fsl-ehci", i, r, 2);
 504                 if (IS_ERR(usb_dev_mph)) {
 505                         ret = PTR_ERR(usb_dev_mph);
 506                         goto err;
 507                 }
 508
 509                 usb_dev_mph->dev.coherent_dma_mask = 0xffffffffUL;
 510                 usb_dev_mph->dev.dma_mask = &usb_dev_mph->dev.coherent_dma_mask;
 511
 512                 usb_data.operating_mode = FSL_USB2_MPH_HOST;
 513
 514                 prop = of_get_property(np, "port0", NULL);
 515                 if (prop)
 516                         usb_data.port_enables |= FSL_USB2_PORT0_ENABLED;
 517
 518                 prop = of_get_property(np, "port1", NULL);
 519                 if (prop)
 520                         usb_data.port_enables |= FSL_USB2_PORT1_ENABLED;
 521
 522                 prop = of_get_property(np, "phy_type", NULL);
 523                 usb_data.phy_mode = determine_usb_phy(prop);
 524
 525                 ret =
 526                     platform_device_add_data(usb_dev_mph, &usb_data,
 527                                              sizeof(struct
 528                                                     fsl_usb2_platform_data));
 529                 if (ret)
 530                         goto unreg_mph;
 531                 i++;
 532         }
 533
 534         for_each_compatible_node(np, NULL, "fsl-usb2-dr") {
 535                 struct resource r[2];
 536                 struct fsl_usb2_platform_data usb_data;
 537                 const unsigned char *prop = NULL;
 538
 539                 memset(&r, 0, sizeof(r));
 540                 memset(&usb_data, 0, sizeof(usb_data));
 541
 542                 ret = of_address_to_resource(np, 0, &r[0]);
 543                 if (ret)
 544                         goto unreg_mph;
 545
 546                 of_irq_to_resource(np, 0, &r[1]);
 547
 548                 prop = of_get_property(np, "dr_mode", NULL);
 549
 550                 if (!prop || !strcmp(prop, "host")) {
 551                         usb_data.operating_mode = FSL_USB2_DR_HOST;
 552                         usb_dev_dr_host = platform_device_register_simple(
 553                                         "fsl-ehci", i, r, 2);
 554                         if (IS_ERR(usb_dev_dr_host)) {
 555                                 ret = PTR_ERR(usb_dev_dr_host);
 556                                 goto err;
 557                         }
 558                 } else if (prop && !strcmp(prop, "peripheral")) {
 559                         usb_data.operating_mode = FSL_USB2_DR_DEVICE;
 560                         usb_dev_dr_client = platform_device_register_simple(
 561                                         "fsl-usb2-udc", i, r, 2);
 562                         if (IS_ERR(usb_dev_dr_client)) {
 563                                 ret = PTR_ERR(usb_dev_dr_client);
 564                                 goto err;
 565                         }
 566                 } else if (prop && !strcmp(prop, "otg")) {
 567                         usb_data.operating_mode = FSL_USB2_DR_OTG;
 568                         usb_dev_dr_host = platform_device_register_simple(
 569                                         "fsl-ehci", i, r, 2);
 570                         if (IS_ERR(usb_dev_dr_host)) {
 571                                 ret = PTR_ERR(usb_dev_dr_host);
 572                                 goto err;
 573                         }
 574                         usb_dev_dr_client = platform_device_register_simple(
 575                                         "fsl-usb2-udc", i, r, 2);
 576                         if (IS_ERR(usb_dev_dr_client)) {
 577                                 ret = PTR_ERR(usb_dev_dr_client);
 578                                 goto err;
 579                         }
 580                 } else {
 581                         ret = -EINVAL;
 582                         goto err;
 583                 }
 584
 585                 prop = of_get_property(np, "phy_type", NULL);
 586                 usb_data.phy_mode = determine_usb_phy(prop);
 587
 588                 if (usb_dev_dr_host) {
 589                         usb_dev_dr_host->dev.coherent_dma_mask = 0xffffffffUL;
 590                         usb_dev_dr_host->dev.dma_mask = &usb_dev_dr_host->
 591                                 dev.coherent_dma_mask;
 592                         if ((ret = platform_device_add_data(usb_dev_dr_host,
 593                                                 &usb_data, sizeof(struct
 594                                                 fsl_usb2_platform_data))))
 595                                 goto unreg_dr;
 596                 }
 597                 if (usb_dev_dr_client) {
 598                         usb_dev_dr_client->dev.coherent_dma_mask = 0xffffffffUL;
 599                         usb_dev_dr_client->dev.dma_mask = &usb_dev_dr_client->
 600                                 dev.coherent_dma_mask;
 601                         if ((ret = platform_device_add_data(usb_dev_dr_client,
 602                                                 &usb_data, sizeof(struct
 603                                                 fsl_usb2_platform_data))))
 604                                 goto unreg_dr;
 605                 }
 606                 i++;
 607         }
 608         return 0;
 609
 610 unreg_dr:
 611         if (usb_dev_dr_host)
 612                 platform_device_unregister(usb_dev_dr_host);
 613         if (usb_dev_dr_client)
 614                 platform_device_unregister(usb_dev_dr_client);
 615 unreg_mph:
 616         if (usb_dev_mph)
 617                 platform_device_unregister(usb_dev_mph);
 618 err:
 619         return ret;
 620 }
 621
 622 arch_initcall(fsl_usb_of_init);
 623
 624 static int __init of_fsl_spi_probe(char *type, char *compatible, u32 sysclk,
 625                                    struct spi_board_info *board_infos,
 626                                    unsigned int num_board_infos,
 627                                    void (*activate_cs)(u8 cs, u8 polarity),
 628                                    void (*deactivate_cs)(u8 cs, u8 polarity))
 629 {
 630         struct device_node *np;
 631         unsigned int i = 0;
 632
 633         for_each_compatible_node(np, type, compatible) {
 634                 int ret;
 635                 unsigned int j;
 636                 const void *prop;
 637                 struct resource res[2];
 638                 struct platform_device *pdev;
 639                 struct fsl_spi_platform_data pdata = {
 640                         .activate_cs = activate_cs,
 641                         .deactivate_cs = deactivate_cs,
 642                 };
 643
 644                 memset(res, 0, sizeof(res));
 645
 646                 pdata.sysclk = sysclk;
 647
 648                 prop = of_get_property(np, "reg", NULL);
 649                 if (!prop)
 650                         goto err;
 651                 pdata.bus_num = *(u32 *)prop;
 652
 653                 prop = of_get_property(np, "cell-index", NULL);
 654                 if (prop)
 655                         i = *(u32 *)prop;
 656
 657                 prop = of_get_property(np, "mode", NULL);
 658                 if (prop && !strcmp(prop, "cpu-qe"))
 659                         pdata.qe_mode = 1;
 660
 661                 for (j = 0; j < num_board_infos; j++) {
 662                         if (board_infos[j].bus_num == pdata.bus_num)
 663                                 pdata.max_chipselect++;
 664                 }
 665
 666                 if (!pdata.max_chipselect)
 667                         continue;
 668
 669                 ret = of_address_to_resource(np, 0, &res[0]);
 670                 if (ret)
 671                         goto err;
 672
 673                 ret = of_irq_to_resource(np, 0, &res[1]);
 674                 if (ret == NO_IRQ)
 675                         goto err;
 676
 677                 pdev = platform_device_alloc("mpc83xx_spi", i);
 678                 if (!pdev)
 679                         goto err;
 680
 681                 ret = platform_device_add_data(pdev, &pdata, sizeof(pdata));
 682                 if (ret)
 683                         goto unreg;
 684
 685                 ret = platform_device_add_resources(pdev, res,
 686                                                     ARRAY_SIZE(res));
 687                 if (ret)
 688                         goto unreg;
 689
 690                 ret = platform_device_add(pdev);
 691                 if (ret)
 692                         goto unreg;
 693
 694                 goto next;
 695 unreg:
 696                 platform_device_del(pdev);
 697 err:
 698                 pr_err("%s: registration failed\n", np->full_name);
 699 next:
 700                 i++;
 701         }
 702
 703         return i;
 704 }
 705
 706 int __init fsl_spi_init(struct spi_board_info *board_infos,
 707                         unsigned int num_board_infos,
 708                         void (*activate_cs)(u8 cs, u8 polarity),
 709                         void (*deactivate_cs)(u8 cs, u8 polarity))
 710 {
 711         u32 sysclk = -1;
 712         int ret;
 713
 714 #ifdef CONFIG_QUICC_ENGINE
 715         /* SPI controller is either clocked from QE or SoC clock */
 716         sysclk = get_brgfreq();
 717 #endif
 718         if (sysclk == -1) {
 719                 sysclk = fsl_get_sys_freq();
 720                 if (sysclk == -1)
 721                         return -ENODEV;
 722         }
 723
 724         ret = of_fsl_spi_probe(NULL, "fsl,spi", sysclk, board_infos,
 725                                num_board_infos, activate_cs, deactivate_cs);
 726         if (!ret)
 727                 of_fsl_spi_probe("spi", "fsl_spi", sysclk, board_infos,
 728                                  num_board_infos, activate_cs, deactivate_cs);
 729
 730         return spi_register_board_info(board_infos, num_board_infos);
 731 }
 732
 733 #if defined(CONFIG_PPC_85xx) || defined(CONFIG_PPC_86xx)
 734 static __be32 __iomem *rstcr;
 735
 736 static int __init setup_rstcr(void)
 737 {
 738         struct device_node *np;
 739         np = of_find_node_by_name(NULL, "global-utilities");
 740         if ((np && of_get_property(np, "fsl,has-rstcr", NULL))) {
 741                 const u32 *prop = of_get_property(np, "reg", NULL);
 742                 if (prop) {
 743                         /* map reset control register
 744                          * 0xE00B0 is offset of reset control register
 745                          */
 746                         rstcr = ioremap(get_immrbase() + *prop + 0xB0, 0xff);
 747                         if (!rstcr)
 748                                 printk (KERN_EMERG "Error: reset control "
 749                                                 "register not mapped!\n");
 750                 }
 751         } else
 752                 printk (KERN_INFO "rstcr compatible register does not exist!\n");
 753         if (np)
 754                 of_node_put(np);
 755         return 0;
 756 }
 757
 758 arch_initcall(setup_rstcr);
 759
 760 void fsl_rstcr_restart(char *cmd)
 761 {
 762         local_irq_disable();
 763         if (rstcr)
 764                 /* set reset control register */
 765                 out_be32(rstcr, 0x2);   /* HRESET_REQ */
 766
 767         while (1) ;
 768 }
 769 #endif
 770
 771 #if defined(CONFIG_FB_FSL_DIU) || defined(CONFIG_FB_FSL_DIU_MODULE)
 772 struct platform_diu_data_ops diu_ops = {
 773         .diu_size = 1280 * 1024 * 4,    /* default one 1280x1024 buffer */
 774 };
 775 EXPORT_SYMBOL(diu_ops);
 776
 777 int __init preallocate_diu_videomemory(void)
 778 {
 779         pr_debug("diu_size=%lu\n", diu_ops.diu_size);
 780
 781         diu_ops.diu_mem = __alloc_bootmem(diu_ops.diu_size, 8, 0);
 782         if (!diu_ops.diu_mem) {
 783                 printk(KERN_ERR "fsl-diu: cannot allocate %lu bytes\n",
 784                         diu_ops.diu_size);
 785                 return -ENOMEM;
 786         }
 787
 788         pr_debug("diu_mem=%p\n", diu_ops.diu_mem);
 789
 790         rh_init(&diu_ops.diu_rh_info, 4096, ARRAY_SIZE(diu_ops.diu_rh_block),
 791                 diu_ops.diu_rh_block);
 792         return rh_attach_region(&diu_ops.diu_rh_info,
 793                                 (unsigned long) diu_ops.diu_mem,
 794                                 diu_ops.diu_size);
 795 }
 796
 797 static int __init early_parse_diufb(char *p)
 798 {
 799         if (!p)
 800                 return 1;
 801
 802         diu_ops.diu_size = _ALIGN_UP(memparse(p, &p), 8);
 803
 804         pr_debug("diu_size=%lu\n", diu_ops.diu_size);
 805
 806         return 0;
 807 }
 808 early_param("diufb", early_parse_diufb);
 809
 810 #endif