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 gfar_mdio_of_init_one(struct device_node *np)
 211 {
 212         int k;
 213         struct device_node *child = NULL;
 214         struct gianfar_mdio_data mdio_data;
 215         struct platform_device *mdio_dev;
 216         struct resource res;
 217         int ret;
 218
 219         memset(&res, 0, sizeof(res));
 220         memset(&mdio_data, 0, sizeof(mdio_data));
 221
 222         ret = of_address_to_resource(np, 0, &res);
 223         if (ret)
 224                 return ret;
 225
 226         /* The gianfar device will try to use the same ID created below to find
 227          * this bus, to coordinate register access (since they share).  */
 228         mdio_dev = platform_device_register_simple("fsl-gianfar_mdio",
 229                         res.start&0xfffff, &res, 1);
 230         if (IS_ERR(mdio_dev))
 231                 return PTR_ERR(mdio_dev);
 232
 233         for (k = 0; k < 32; k++)
 234                 mdio_data.irq[k] = PHY_POLL;
 235
 236         while ((child = of_get_next_child(np, child)) != NULL) {
 237                 int irq = irq_of_parse_and_map(child, 0);
 238                 if (irq != NO_IRQ) {
 239                         const u32 *id = of_get_property(child, "reg", NULL);
 240                         mdio_data.irq[*id] = irq;
 241                 }
 242         }
 243
 244         ret = platform_device_add_data(mdio_dev, &mdio_data,
 245                                 sizeof(struct gianfar_mdio_data));
 246         if (ret)
 247                 platform_device_unregister(mdio_dev);
 248
 249         return ret;
 250 }
 251
 252 static int __init gfar_mdio_of_init(void)
 253 {
 254         struct device_node *np = NULL;
 255
 256         for_each_compatible_node(np, NULL, "fsl,gianfar-mdio")
 257                 gfar_mdio_of_init_one(np);
 258
 259         /* try the deprecated version */
 260         for_each_compatible_node(np, "mdio", "gianfar");
 261                 gfar_mdio_of_init_one(np);
 262
 263         return 0;
 264 }
 265
 266 arch_initcall(gfar_mdio_of_init);
 267
 268 static const char *gfar_tx_intr = "tx";
 269 static const char *gfar_rx_intr = "rx";
 270 static const char *gfar_err_intr = "error";
 271
 272 static int __init gfar_of_init(void)
 273 {
 274         struct device_node *np;
 275         unsigned int i;
 276         struct platform_device *gfar_dev;
 277         struct resource res;
 278         int ret;
 279
 280         for (np = NULL, i = 0;
 281              (np = of_find_compatible_node(np, "network", "gianfar")) != NULL;
 282              i++) {
 283                 struct resource r[4];
 284                 struct device_node *phy, *mdio;
 285                 struct gianfar_platform_data gfar_data;
 286                 const unsigned int *id;
 287                 const char *model;
 288                 const char *ctype;
 289                 const void *mac_addr;
 290                 const phandle *ph;
 291                 int n_res = 2;
 292
 293                 if (!of_device_is_available(np))
 294                         continue;
 295
 296                 memset(r, 0, sizeof(r));
 297                 memset(&gfar_data, 0, sizeof(gfar_data));
 298
 299                 ret = of_address_to_resource(np, 0, &r[0]);
 300                 if (ret)
 301                         goto err;
 302
 303                 of_irq_to_resource(np, 0, &r[1]);
 304
 305                 model = of_get_property(np, "model", NULL);
 306
 307                 /* If we aren't the FEC we have multiple interrupts */
 308                 if (model && strcasecmp(model, "FEC")) {
 309                         r[1].name = gfar_tx_intr;
 310
 311                         r[2].name = gfar_rx_intr;
 312                         of_irq_to_resource(np, 1, &r[2]);
 313
 314                         r[3].name = gfar_err_intr;
 315                         of_irq_to_resource(np, 2, &r[3]);
 316
 317                         n_res += 2;
 318                 }
 319
 320                 gfar_dev =
 321                     platform_device_register_simple("fsl-gianfar", i, &r[0],
 322                                                     n_res);
 323
 324                 if (IS_ERR(gfar_dev)) {
 325                         ret = PTR_ERR(gfar_dev);
 326                         goto err;
 327                 }
 328
 329                 mac_addr = of_get_mac_address(np);
 330                 if (mac_addr)
 331                         memcpy(gfar_data.mac_addr, mac_addr, 6);
 332
 333                 if (model && !strcasecmp(model, "TSEC"))
 334                         gfar_data.device_flags =
 335                             FSL_GIANFAR_DEV_HAS_GIGABIT |
 336                             FSL_GIANFAR_DEV_HAS_COALESCE |
 337                             FSL_GIANFAR_DEV_HAS_RMON |
 338                             FSL_GIANFAR_DEV_HAS_MULTI_INTR;
 339                 if (model && !strcasecmp(model, "eTSEC"))
 340                         gfar_data.device_flags =
 341                             FSL_GIANFAR_DEV_HAS_GIGABIT |
 342                             FSL_GIANFAR_DEV_HAS_COALESCE |
 343                             FSL_GIANFAR_DEV_HAS_RMON |
 344                             FSL_GIANFAR_DEV_HAS_MULTI_INTR |
 345                             FSL_GIANFAR_DEV_HAS_CSUM |
 346                             FSL_GIANFAR_DEV_HAS_VLAN |
 347                             FSL_GIANFAR_DEV_HAS_EXTENDED_HASH;
 348
 349                 ctype = of_get_property(np, "phy-connection-type", NULL);
 350
 351                 /* We only care about rgmii-id.  The rest are autodetected */
 352                 if (ctype && !strcmp(ctype, "rgmii-id"))
 353                         gfar_data.interface = PHY_INTERFACE_MODE_RGMII_ID;
 354                 else
 355                         gfar_data.interface = PHY_INTERFACE_MODE_MII;
 356
 357                 if (of_get_property(np, "fsl,magic-packet", NULL))
 358                         gfar_data.device_flags |= FSL_GIANFAR_DEV_HAS_MAGIC_PACKET;
 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&0xfffff);
 394
 395                         of_node_put(phy);
 396                         of_node_put(mdio);
 397                 }
 398
 399                 /* Get MDIO bus controlled by this eTSEC, if any.  Normally only
 400                  * eTSEC 1 will control an MDIO bus, not necessarily the same
 401                  * bus that its PHY is on ('mdio' above), so we can't just use
 402                  * that.  What we do is look for a gianfar mdio device that has
 403                  * overlapping registers with this device.  That's really the
 404                  * whole point, to find the device sharing our registers to
 405                  * coordinate access with it.
 406                  */
 407                 for_each_compatible_node(mdio, NULL, "fsl,gianfar-mdio") {
 408                         if (of_address_to_resource(mdio, 0, &res))
 409                                 continue;
 410
 411                         if (res.start >= r[0].start && res.end <= r[0].end) {
 412                                 /* Get the ID the mdio bus platform device was
 413                                  * registered with.  gfar_data.bus_id is
 414                                  * different because it's for finding a PHY,
 415                                  * while this is for finding a MII bus.
 416                                  */
 417                                 gfar_data.mdio_bus = res.start&0xfffff;
 418                                 of_node_put(mdio);
 419                                 break;
 420                         }
 421                 }
 422
 423                 ret =
 424                     platform_device_add_data(gfar_dev, &gfar_data,
 425                                              sizeof(struct
 426                                                     gianfar_platform_data));
 427                 if (ret)
 428                         goto unreg;
 429         }
 430
 431         return 0;
 432
 433 unreg:
 434         platform_device_unregister(gfar_dev);
 435 err:
 436         return ret;
 437 }
 438
 439 arch_initcall(gfar_of_init);
 440
 441 static enum fsl_usb2_phy_modes determine_usb_phy(const char *phy_type)
 442 {
 443         if (!phy_type)
 444                 return FSL_USB2_PHY_NONE;
 445         if (!strcasecmp(phy_type, "ulpi"))
 446                 return FSL_USB2_PHY_ULPI;
 447         if (!strcasecmp(phy_type, "utmi"))
 448                 return FSL_USB2_PHY_UTMI;
 449         if (!strcasecmp(phy_type, "utmi_wide"))
 450                 return FSL_USB2_PHY_UTMI_WIDE;
 451         if (!strcasecmp(phy_type, "serial"))
 452                 return FSL_USB2_PHY_SERIAL;
 453
 454         return FSL_USB2_PHY_NONE;
 455 }
 456
 457 static int __init fsl_usb_of_init(void)
 458 {
 459         struct device_node *np;
 460         unsigned int i = 0;
 461         struct platform_device *usb_dev_mph = NULL, *usb_dev_dr_host = NULL,
 462                 *usb_dev_dr_client = NULL;
 463         int ret;
 464
 465         for_each_compatible_node(np, NULL, "fsl-usb2-mph") {
 466                 struct resource r[2];
 467                 struct fsl_usb2_platform_data usb_data;
 468                 const unsigned char *prop = NULL;
 469
 470                 memset(&r, 0, sizeof(r));
 471                 memset(&usb_data, 0, sizeof(usb_data));
 472
 473                 ret = of_address_to_resource(np, 0, &r[0]);
 474                 if (ret)
 475                         goto err;
 476
 477                 of_irq_to_resource(np, 0, &r[1]);
 478
 479                 usb_dev_mph =
 480                     platform_device_register_simple("fsl-ehci", i, r, 2);
 481                 if (IS_ERR(usb_dev_mph)) {
 482                         ret = PTR_ERR(usb_dev_mph);
 483                         goto err;
 484                 }
 485
 486                 usb_dev_mph->dev.coherent_dma_mask = 0xffffffffUL;
 487                 usb_dev_mph->dev.dma_mask = &usb_dev_mph->dev.coherent_dma_mask;
 488
 489                 usb_data.operating_mode = FSL_USB2_MPH_HOST;
 490
 491                 prop = of_get_property(np, "port0", NULL);
 492                 if (prop)
 493                         usb_data.port_enables |= FSL_USB2_PORT0_ENABLED;
 494
 495                 prop = of_get_property(np, "port1", NULL);
 496                 if (prop)
 497                         usb_data.port_enables |= FSL_USB2_PORT1_ENABLED;
 498
 499                 prop = of_get_property(np, "phy_type", NULL);
 500                 usb_data.phy_mode = determine_usb_phy(prop);
 501
 502                 ret =
 503                     platform_device_add_data(usb_dev_mph, &usb_data,
 504                                              sizeof(struct
 505                                                     fsl_usb2_platform_data));
 506                 if (ret)
 507                         goto unreg_mph;
 508                 i++;
 509         }
 510
 511         for_each_compatible_node(np, NULL, "fsl-usb2-dr") {
 512                 struct resource r[2];
 513                 struct fsl_usb2_platform_data usb_data;
 514                 const unsigned char *prop = NULL;
 515
 516                 memset(&r, 0, sizeof(r));
 517                 memset(&usb_data, 0, sizeof(usb_data));
 518
 519                 ret = of_address_to_resource(np, 0, &r[0]);
 520                 if (ret)
 521                         goto unreg_mph;
 522
 523                 of_irq_to_resource(np, 0, &r[1]);
 524
 525                 prop = of_get_property(np, "dr_mode", NULL);
 526
 527                 if (!prop || !strcmp(prop, "host")) {
 528                         usb_data.operating_mode = FSL_USB2_DR_HOST;
 529                         usb_dev_dr_host = platform_device_register_simple(
 530                                         "fsl-ehci", i, r, 2);
 531                         if (IS_ERR(usb_dev_dr_host)) {
 532                                 ret = PTR_ERR(usb_dev_dr_host);
 533                                 goto err;
 534                         }
 535                 } else if (prop && !strcmp(prop, "peripheral")) {
 536                         usb_data.operating_mode = FSL_USB2_DR_DEVICE;
 537                         usb_dev_dr_client = platform_device_register_simple(
 538                                         "fsl-usb2-udc", i, r, 2);
 539                         if (IS_ERR(usb_dev_dr_client)) {
 540                                 ret = PTR_ERR(usb_dev_dr_client);
 541                                 goto err;
 542                         }
 543                 } else if (prop && !strcmp(prop, "otg")) {
 544                         usb_data.operating_mode = FSL_USB2_DR_OTG;
 545                         usb_dev_dr_host = platform_device_register_simple(
 546                                         "fsl-ehci", i, r, 2);
 547                         if (IS_ERR(usb_dev_dr_host)) {
 548                                 ret = PTR_ERR(usb_dev_dr_host);
 549                                 goto err;
 550                         }
 551                         usb_dev_dr_client = platform_device_register_simple(
 552                                         "fsl-usb2-udc", i, r, 2);
 553                         if (IS_ERR(usb_dev_dr_client)) {
 554                                 ret = PTR_ERR(usb_dev_dr_client);
 555                                 goto err;
 556                         }
 557                 } else {
 558                         ret = -EINVAL;
 559                         goto err;
 560                 }
 561
 562                 prop = of_get_property(np, "phy_type", NULL);
 563                 usb_data.phy_mode = determine_usb_phy(prop);
 564
 565                 if (usb_dev_dr_host) {
 566                         usb_dev_dr_host->dev.coherent_dma_mask = 0xffffffffUL;
 567                         usb_dev_dr_host->dev.dma_mask = &usb_dev_dr_host->
 568                                 dev.coherent_dma_mask;
 569                         if ((ret = platform_device_add_data(usb_dev_dr_host,
 570                                                 &usb_data, sizeof(struct
 571                                                 fsl_usb2_platform_data))))
 572                                 goto unreg_dr;
 573                 }
 574                 if (usb_dev_dr_client) {
 575                         usb_dev_dr_client->dev.coherent_dma_mask = 0xffffffffUL;
 576                         usb_dev_dr_client->dev.dma_mask = &usb_dev_dr_client->
 577                                 dev.coherent_dma_mask;
 578                         if ((ret = platform_device_add_data(usb_dev_dr_client,
 579                                                 &usb_data, sizeof(struct
 580                                                 fsl_usb2_platform_data))))
 581                                 goto unreg_dr;
 582                 }
 583                 i++;
 584         }
 585         return 0;
 586
 587 unreg_dr:
 588         if (usb_dev_dr_host)
 589                 platform_device_unregister(usb_dev_dr_host);
 590         if (usb_dev_dr_client)
 591                 platform_device_unregister(usb_dev_dr_client);
 592 unreg_mph:
 593         if (usb_dev_mph)
 594                 platform_device_unregister(usb_dev_mph);
 595 err:
 596         return ret;
 597 }
 598
 599 arch_initcall(fsl_usb_of_init);
 600
 601 static int __init of_fsl_spi_probe(char *type, char *compatible, u32 sysclk,
 602                                    struct spi_board_info *board_infos,
 603                                    unsigned int num_board_infos,
 604                                    void (*activate_cs)(u8 cs, u8 polarity),
 605                                    void (*deactivate_cs)(u8 cs, u8 polarity))
 606 {
 607         struct device_node *np;
 608         unsigned int i = 0;
 609
 610         for_each_compatible_node(np, type, compatible) {
 611                 int ret;
 612                 unsigned int j;
 613                 const void *prop;
 614                 struct resource res[2];
 615                 struct platform_device *pdev;
 616                 struct fsl_spi_platform_data pdata = {
 617                         .activate_cs = activate_cs,
 618                         .deactivate_cs = deactivate_cs,
 619                 };
 620
 621                 memset(res, 0, sizeof(res));
 622
 623                 pdata.sysclk = sysclk;
 624
 625                 prop = of_get_property(np, "reg", NULL);
 626                 if (!prop)
 627                         goto err;
 628                 pdata.bus_num = *(u32 *)prop;
 629
 630                 prop = of_get_property(np, "cell-index", NULL);
 631                 if (prop)
 632                         i = *(u32 *)prop;
 633
 634                 prop = of_get_property(np, "mode", NULL);
 635                 if (prop && !strcmp(prop, "cpu-qe"))
 636                         pdata.qe_mode = 1;
 637
 638                 for (j = 0; j < num_board_infos; j++) {
 639                         if (board_infos[j].bus_num == pdata.bus_num)
 640                                 pdata.max_chipselect++;
 641                 }
 642
 643                 if (!pdata.max_chipselect)
 644                         continue;
 645
 646                 ret = of_address_to_resource(np, 0, &res[0]);
 647                 if (ret)
 648                         goto err;
 649
 650                 ret = of_irq_to_resource(np, 0, &res[1]);
 651                 if (ret == NO_IRQ)
 652                         goto err;
 653
 654                 pdev = platform_device_alloc("mpc83xx_spi", i);
 655                 if (!pdev)
 656                         goto err;
 657
 658                 ret = platform_device_add_data(pdev, &pdata, sizeof(pdata));
 659                 if (ret)
 660                         goto unreg;
 661
 662                 ret = platform_device_add_resources(pdev, res,
 663                                                     ARRAY_SIZE(res));
 664                 if (ret)
 665                         goto unreg;
 666
 667                 ret = platform_device_add(pdev);
 668                 if (ret)
 669                         goto unreg;
 670
 671                 goto next;
 672 unreg:
 673                 platform_device_del(pdev);
 674 err:
 675                 pr_err("%s: registration failed\n", np->full_name);
 676 next:
 677                 i++;
 678         }
 679
 680         return i;
 681 }
 682
 683 int __init fsl_spi_init(struct spi_board_info *board_infos,
 684                         unsigned int num_board_infos,
 685                         void (*activate_cs)(u8 cs, u8 polarity),
 686                         void (*deactivate_cs)(u8 cs, u8 polarity))
 687 {
 688         u32 sysclk = -1;
 689         int ret;
 690
 691 #ifdef CONFIG_QUICC_ENGINE
 692         /* SPI controller is either clocked from QE or SoC clock */
 693         sysclk = get_brgfreq();
 694 #endif
 695         if (sysclk == -1) {
 696                 sysclk = fsl_get_sys_freq();
 697                 if (sysclk == -1)
 698                         return -ENODEV;
 699         }
 700
 701         ret = of_fsl_spi_probe(NULL, "fsl,spi", sysclk, board_infos,
 702                                num_board_infos, activate_cs, deactivate_cs);
 703         if (!ret)
 704                 of_fsl_spi_probe("spi", "fsl_spi", sysclk, board_infos,
 705                                  num_board_infos, activate_cs, deactivate_cs);
 706
 707         return spi_register_board_info(board_infos, num_board_infos);
 708 }
 709
 710 #if defined(CONFIG_PPC_85xx) || defined(CONFIG_PPC_86xx)
 711 static __be32 __iomem *rstcr;
 712
 713 static int __init setup_rstcr(void)
 714 {
 715         struct device_node *np;
 716         np = of_find_node_by_name(NULL, "global-utilities");
 717         if ((np && of_get_property(np, "fsl,has-rstcr", NULL))) {
 718                 const u32 *prop = of_get_property(np, "reg", NULL);
 719                 if (prop) {
 720                         /* map reset control register
 721                          * 0xE00B0 is offset of reset control register
 722                          */
 723                         rstcr = ioremap(get_immrbase() + *prop + 0xB0, 0xff);
 724                         if (!rstcr)
 725                                 printk (KERN_EMERG "Error: reset control "
 726                                                 "register not mapped!\n");
 727                 }
 728         } else
 729                 printk (KERN_INFO "rstcr compatible register does not exist!\n");
 730         if (np)
 731                 of_node_put(np);
 732         return 0;
 733 }
 734
 735 arch_initcall(setup_rstcr);
 736
 737 void fsl_rstcr_restart(char *cmd)
 738 {
 739         local_irq_disable();
 740         if (rstcr)
 741                 /* set reset control register */
 742                 out_be32(rstcr, 0x2);   /* HRESET_REQ */
 743
 744         while (1) ;
 745 }
 746 #endif
 747
 748 #if defined(CONFIG_FB_FSL_DIU) || defined(CONFIG_FB_FSL_DIU_MODULE)
 749 struct platform_diu_data_ops diu_ops;
 750 EXPORT_SYMBOL(diu_ops);
 751 #endif