err.no 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 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         mdio_dev = platform_device_register_simple("fsl-gianfar_mdio",
 227                         res.start&0xfffff, &res, 1);
 228         if (IS_ERR(mdio_dev))
 229                 return PTR_ERR(mdio_dev);
 230
 231         for (k = 0; k < 32; k++)
 232                 mdio_data.irq[k] = PHY_POLL;
 233
 234         while ((child = of_get_next_child(np, child)) != NULL) {
 235                 int irq = irq_of_parse_and_map(child, 0);
 236                 if (irq != NO_IRQ) {
 237                         const u32 *id = of_get_property(child, "reg", NULL);
 238                         mdio_data.irq[*id] = irq;
 239                 }
 240         }
 241
 242         ret = platform_device_add_data(mdio_dev, &mdio_data,
 243                                 sizeof(struct gianfar_mdio_data));
 244         if (ret)
 245                 platform_device_unregister(mdio_dev);
 246
 247         return ret;
 248 }
 249
 250 static int __init gfar_mdio_of_init(void)
 251 {
 252         struct device_node *np = NULL;
 253
 254         for_each_compatible_node(np, NULL, "fsl,gianfar-mdio")
 255                 gfar_mdio_of_init_one(np);
 256
 257         /* try the deprecated version */
 258         for_each_compatible_node(np, "mdio", "gianfar");
 259                 gfar_mdio_of_init_one(np);
 260
 261         return 0;
 262 }
 263
 264 arch_initcall(gfar_mdio_of_init);
 265
 266 static const char *gfar_tx_intr = "tx";
 267 static const char *gfar_rx_intr = "rx";
 268 static const char *gfar_err_intr = "error";
 269
 270 static int __init gfar_of_init(void)
 271 {
 272         struct device_node *np;
 273         unsigned int i;
 274         struct platform_device *gfar_dev;
 275         struct resource res;
 276         int ret;
 277
 278         for (np = NULL, i = 0;
 279              (np = of_find_compatible_node(np, "network", "gianfar")) != NULL;
 280              i++) {
 281                 struct resource r[4];
 282                 struct device_node *phy, *mdio;
 283                 struct gianfar_platform_data gfar_data;
 284                 const unsigned int *id;
 285                 const char *model;
 286                 const char *ctype;
 287                 const void *mac_addr;
 288                 const phandle *ph;
 289                 int n_res = 2;
 290
 291                 if (!of_device_is_available(np))
 292                         continue;
 293
 294                 memset(r, 0, sizeof(r));
 295                 memset(&gfar_data, 0, sizeof(gfar_data));
 296
 297                 ret = of_address_to_resource(np, 0, &r[0]);
 298                 if (ret)
 299                         goto err;
 300
 301                 of_irq_to_resource(np, 0, &r[1]);
 302
 303                 model = of_get_property(np, "model", NULL);
 304
 305                 /* If we aren't the FEC we have multiple interrupts */
 306                 if (model && strcasecmp(model, "FEC")) {
 307                         r[1].name = gfar_tx_intr;
 308
 309                         r[2].name = gfar_rx_intr;
 310                         of_irq_to_resource(np, 1, &r[2]);
 311
 312                         r[3].name = gfar_err_intr;
 313                         of_irq_to_resource(np, 2, &r[3]);
 314
 315                         n_res += 2;
 316                 }
 317
 318                 gfar_dev =
 319                     platform_device_register_simple("fsl-gianfar", i, &r[0],
 320                                                     n_res);
 321
 322                 if (IS_ERR(gfar_dev)) {
 323                         ret = PTR_ERR(gfar_dev);
 324                         goto err;
 325                 }
 326
 327                 mac_addr = of_get_mac_address(np);
 328                 if (mac_addr)
 329                         memcpy(gfar_data.mac_addr, mac_addr, 6);
 330
 331                 if (model && !strcasecmp(model, "TSEC"))
 332                         gfar_data.device_flags =
 333                             FSL_GIANFAR_DEV_HAS_GIGABIT |
 334                             FSL_GIANFAR_DEV_HAS_COALESCE |
 335                             FSL_GIANFAR_DEV_HAS_RMON |
 336                             FSL_GIANFAR_DEV_HAS_MULTI_INTR;
 337                 if (model && !strcasecmp(model, "eTSEC"))
 338                         gfar_data.device_flags =
 339                             FSL_GIANFAR_DEV_HAS_GIGABIT |
 340                             FSL_GIANFAR_DEV_HAS_COALESCE |
 341                             FSL_GIANFAR_DEV_HAS_RMON |
 342                             FSL_GIANFAR_DEV_HAS_MULTI_INTR |
 343                             FSL_GIANFAR_DEV_HAS_CSUM |
 344                             FSL_GIANFAR_DEV_HAS_VLAN |
 345                             FSL_GIANFAR_DEV_HAS_EXTENDED_HASH;
 346
 347                 ctype = of_get_property(np, "phy-connection-type", NULL);
 348
 349                 /* We only care about rgmii-id.  The rest are autodetected */
 350                 if (ctype && !strcmp(ctype, "rgmii-id"))
 351                         gfar_data.interface = PHY_INTERFACE_MODE_RGMII_ID;
 352                 else
 353                         gfar_data.interface = PHY_INTERFACE_MODE_MII;
 354
 355                 ph = of_get_property(np, "phy-handle", NULL);
 356                 if (ph == NULL) {
 357                         u32 *fixed_link;
 358
 359                         fixed_link = (u32 *)of_get_property(np, "fixed-link",
 360                                                            NULL);
 361                         if (!fixed_link) {
 362                                 ret = -ENODEV;
 363                                 goto unreg;
 364                         }
 365
 366                         snprintf(gfar_data.bus_id, MII_BUS_ID_SIZE, "0");
 367                         gfar_data.phy_id = fixed_link[0];
 368                 } else {
 369                         phy = of_find_node_by_phandle(*ph);
 370
 371                         if (phy == NULL) {
 372                                 ret = -ENODEV;
 373                                 goto unreg;
 374                         }
 375
 376                         mdio = of_get_parent(phy);
 377
 378                         id = of_get_property(phy, "reg", NULL);
 379                         ret = of_address_to_resource(mdio, 0, &res);
 380                         if (ret) {
 381                                 of_node_put(phy);
 382                                 of_node_put(mdio);
 383                                 goto unreg;
 384                         }
 385
 386                         gfar_data.phy_id = *id;
 387                         snprintf(gfar_data.bus_id, MII_BUS_ID_SIZE, "%llx",
 388                                  (unsigned long long)res.start&0xfffff);
 389
 390                         of_node_put(phy);
 391                         of_node_put(mdio);
 392                 }
 393
 394                 ret =
 395                     platform_device_add_data(gfar_dev, &gfar_data,
 396                                              sizeof(struct
 397                                                     gianfar_platform_data));
 398                 if (ret)
 399                         goto unreg;
 400         }
 401
 402         return 0;
 403
 404 unreg:
 405         platform_device_unregister(gfar_dev);
 406 err:
 407         return ret;
 408 }
 409
 410 arch_initcall(gfar_of_init);
 411
 412
 413 #ifdef CONFIG_PPC_83xx
 414 static int __init mpc83xx_wdt_init(void)
 415 {
 416         struct resource r;
 417         struct device_node *np;
 418         struct platform_device *dev;
 419         u32 freq = fsl_get_sys_freq();
 420         int ret;
 421
 422         np = of_find_compatible_node(NULL, "watchdog", "mpc83xx_wdt");
 423
 424         if (!np) {
 425                 ret = -ENODEV;
 426                 goto nodev;
 427         }
 428
 429         memset(&r, 0, sizeof(r));
 430
 431         ret = of_address_to_resource(np, 0, &r);
 432         if (ret)
 433                 goto err;
 434
 435         dev = platform_device_register_simple("mpc83xx_wdt", 0, &r, 1);
 436         if (IS_ERR(dev)) {
 437                 ret = PTR_ERR(dev);
 438                 goto err;
 439         }
 440
 441         ret = platform_device_add_data(dev, &freq, sizeof(freq));
 442         if (ret)
 443                 goto unreg;
 444
 445         of_node_put(np);
 446         return 0;
 447
 448 unreg:
 449         platform_device_unregister(dev);
 450 err:
 451         of_node_put(np);
 452 nodev:
 453         return ret;
 454 }
 455
 456 arch_initcall(mpc83xx_wdt_init);
 457 #endif
 458
 459 static enum fsl_usb2_phy_modes determine_usb_phy(const char *phy_type)
 460 {
 461         if (!phy_type)
 462                 return FSL_USB2_PHY_NONE;
 463         if (!strcasecmp(phy_type, "ulpi"))
 464                 return FSL_USB2_PHY_ULPI;
 465         if (!strcasecmp(phy_type, "utmi"))
 466                 return FSL_USB2_PHY_UTMI;
 467         if (!strcasecmp(phy_type, "utmi_wide"))
 468                 return FSL_USB2_PHY_UTMI_WIDE;
 469         if (!strcasecmp(phy_type, "serial"))
 470                 return FSL_USB2_PHY_SERIAL;
 471
 472         return FSL_USB2_PHY_NONE;
 473 }
 474
 475 static int __init fsl_usb_of_init(void)
 476 {
 477         struct device_node *np;
 478         unsigned int i = 0;
 479         struct platform_device *usb_dev_mph = NULL, *usb_dev_dr_host = NULL,
 480                 *usb_dev_dr_client = NULL;
 481         int ret;
 482
 483         for_each_compatible_node(np, NULL, "fsl-usb2-mph") {
 484                 struct resource r[2];
 485                 struct fsl_usb2_platform_data usb_data;
 486                 const unsigned char *prop = NULL;
 487
 488                 memset(&r, 0, sizeof(r));
 489                 memset(&usb_data, 0, sizeof(usb_data));
 490
 491                 ret = of_address_to_resource(np, 0, &r[0]);
 492                 if (ret)
 493                         goto err;
 494
 495                 of_irq_to_resource(np, 0, &r[1]);
 496
 497                 usb_dev_mph =
 498                     platform_device_register_simple("fsl-ehci", i, r, 2);
 499                 if (IS_ERR(usb_dev_mph)) {
 500                         ret = PTR_ERR(usb_dev_mph);
 501                         goto err;
 502                 }
 503
 504                 usb_dev_mph->dev.coherent_dma_mask = 0xffffffffUL;
 505                 usb_dev_mph->dev.dma_mask = &usb_dev_mph->dev.coherent_dma_mask;
 506
 507                 usb_data.operating_mode = FSL_USB2_MPH_HOST;
 508
 509                 prop = of_get_property(np, "port0", NULL);
 510                 if (prop)
 511                         usb_data.port_enables |= FSL_USB2_PORT0_ENABLED;
 512
 513                 prop = of_get_property(np, "port1", NULL);
 514                 if (prop)
 515                         usb_data.port_enables |= FSL_USB2_PORT1_ENABLED;
 516
 517                 prop = of_get_property(np, "phy_type", NULL);
 518                 usb_data.phy_mode = determine_usb_phy(prop);
 519
 520                 ret =
 521                     platform_device_add_data(usb_dev_mph, &usb_data,
 522                                              sizeof(struct
 523                                                     fsl_usb2_platform_data));
 524                 if (ret)
 525                         goto unreg_mph;
 526                 i++;
 527         }
 528
 529         for_each_compatible_node(np, NULL, "fsl-usb2-dr") {
 530                 struct resource r[2];
 531                 struct fsl_usb2_platform_data usb_data;
 532                 const unsigned char *prop = NULL;
 533
 534                 memset(&r, 0, sizeof(r));
 535                 memset(&usb_data, 0, sizeof(usb_data));
 536
 537                 ret = of_address_to_resource(np, 0, &r[0]);
 538                 if (ret)
 539                         goto unreg_mph;
 540
 541                 of_irq_to_resource(np, 0, &r[1]);
 542
 543                 prop = of_get_property(np, "dr_mode", NULL);
 544
 545                 if (!prop || !strcmp(prop, "host")) {
 546                         usb_data.operating_mode = FSL_USB2_DR_HOST;
 547                         usb_dev_dr_host = platform_device_register_simple(
 548                                         "fsl-ehci", i, r, 2);
 549                         if (IS_ERR(usb_dev_dr_host)) {
 550                                 ret = PTR_ERR(usb_dev_dr_host);
 551                                 goto err;
 552                         }
 553                 } else if (prop && !strcmp(prop, "peripheral")) {
 554                         usb_data.operating_mode = FSL_USB2_DR_DEVICE;
 555                         usb_dev_dr_client = platform_device_register_simple(
 556                                         "fsl-usb2-udc", i, r, 2);
 557                         if (IS_ERR(usb_dev_dr_client)) {
 558                                 ret = PTR_ERR(usb_dev_dr_client);
 559                                 goto err;
 560                         }
 561                 } else if (prop && !strcmp(prop, "otg")) {
 562                         usb_data.operating_mode = FSL_USB2_DR_OTG;
 563                         usb_dev_dr_host = platform_device_register_simple(
 564                                         "fsl-ehci", i, r, 2);
 565                         if (IS_ERR(usb_dev_dr_host)) {
 566                                 ret = PTR_ERR(usb_dev_dr_host);
 567                                 goto err;
 568                         }
 569                         usb_dev_dr_client = platform_device_register_simple(
 570                                         "fsl-usb2-udc", i, r, 2);
 571                         if (IS_ERR(usb_dev_dr_client)) {
 572                                 ret = PTR_ERR(usb_dev_dr_client);
 573                                 goto err;
 574                         }
 575                 } else {
 576                         ret = -EINVAL;
 577                         goto err;
 578                 }
 579
 580                 prop = of_get_property(np, "phy_type", NULL);
 581                 usb_data.phy_mode = determine_usb_phy(prop);
 582
 583                 if (usb_dev_dr_host) {
 584                         usb_dev_dr_host->dev.coherent_dma_mask = 0xffffffffUL;
 585                         usb_dev_dr_host->dev.dma_mask = &usb_dev_dr_host->
 586                                 dev.coherent_dma_mask;
 587                         if ((ret = platform_device_add_data(usb_dev_dr_host,
 588                                                 &usb_data, sizeof(struct
 589                                                 fsl_usb2_platform_data))))
 590                                 goto unreg_dr;
 591                 }
 592                 if (usb_dev_dr_client) {
 593                         usb_dev_dr_client->dev.coherent_dma_mask = 0xffffffffUL;
 594                         usb_dev_dr_client->dev.dma_mask = &usb_dev_dr_client->
 595                                 dev.coherent_dma_mask;
 596                         if ((ret = platform_device_add_data(usb_dev_dr_client,
 597                                                 &usb_data, sizeof(struct
 598                                                 fsl_usb2_platform_data))))
 599                                 goto unreg_dr;
 600                 }
 601                 i++;
 602         }
 603         return 0;
 604
 605 unreg_dr:
 606         if (usb_dev_dr_host)
 607                 platform_device_unregister(usb_dev_dr_host);
 608         if (usb_dev_dr_client)
 609                 platform_device_unregister(usb_dev_dr_client);
 610 unreg_mph:
 611         if (usb_dev_mph)
 612                 platform_device_unregister(usb_dev_mph);
 613 err:
 614         return ret;
 615 }
 616
 617 arch_initcall(fsl_usb_of_init);
 618
 619 static int __init of_fsl_spi_probe(char *type, char *compatible, u32 sysclk,
 620                                    struct spi_board_info *board_infos,
 621                                    unsigned int num_board_infos,
 622                                    void (*activate_cs)(u8 cs, u8 polarity),
 623                                    void (*deactivate_cs)(u8 cs, u8 polarity))
 624 {
 625         struct device_node *np;
 626         unsigned int i = 0;
 627
 628         for_each_compatible_node(np, type, compatible) {
 629                 int ret;
 630                 unsigned int j;
 631                 const void *prop;
 632                 struct resource res[2];
 633                 struct platform_device *pdev;
 634                 struct fsl_spi_platform_data pdata = {
 635                         .activate_cs = activate_cs,
 636                         .deactivate_cs = deactivate_cs,
 637                 };
 638
 639                 memset(res, 0, sizeof(res));
 640
 641                 pdata.sysclk = sysclk;
 642
 643                 prop = of_get_property(np, "reg", NULL);
 644                 if (!prop)
 645                         goto err;
 646                 pdata.bus_num = *(u32 *)prop;
 647
 648                 prop = of_get_property(np, "cell-index", NULL);
 649                 if (prop)
 650                         i = *(u32 *)prop;
 651
 652                 prop = of_get_property(np, "mode", NULL);
 653                 if (prop && !strcmp(prop, "cpu-qe"))
 654                         pdata.qe_mode = 1;
 655
 656                 for (j = 0; j < num_board_infos; j++) {
 657                         if (board_infos[j].bus_num == pdata.bus_num)
 658                                 pdata.max_chipselect++;
 659                 }
 660
 661                 if (!pdata.max_chipselect)
 662                         continue;
 663
 664                 ret = of_address_to_resource(np, 0, &res[0]);
 665                 if (ret)
 666                         goto err;
 667
 668                 ret = of_irq_to_resource(np, 0, &res[1]);
 669                 if (ret == NO_IRQ)
 670                         goto err;
 671
 672                 pdev = platform_device_alloc("mpc83xx_spi", i);
 673                 if (!pdev)
 674                         goto err;
 675
 676                 ret = platform_device_add_data(pdev, &pdata, sizeof(pdata));
 677                 if (ret)
 678                         goto unreg;
 679
 680                 ret = platform_device_add_resources(pdev, res,
 681                                                     ARRAY_SIZE(res));
 682                 if (ret)
 683                         goto unreg;
 684
 685                 ret = platform_device_add(pdev);
 686                 if (ret)
 687                         goto unreg;
 688
 689                 goto next;
 690 unreg:
 691                 platform_device_del(pdev);
 692 err:
 693                 pr_err("%s: registration failed\n", np->full_name);
 694 next:
 695                 i++;
 696         }
 697
 698         return i;
 699 }
 700
 701 int __init fsl_spi_init(struct spi_board_info *board_infos,
 702                         unsigned int num_board_infos,
 703                         void (*activate_cs)(u8 cs, u8 polarity),
 704                         void (*deactivate_cs)(u8 cs, u8 polarity))
 705 {
 706         u32 sysclk = -1;
 707         int ret;
 708
 709 #ifdef CONFIG_QUICC_ENGINE
 710         /* SPI controller is either clocked from QE or SoC clock */
 711         sysclk = get_brgfreq();
 712 #endif
 713         if (sysclk == -1) {
 714                 sysclk = fsl_get_sys_freq();
 715                 if (sysclk == -1)
 716                         return -ENODEV;
 717         }
 718
 719         ret = of_fsl_spi_probe(NULL, "fsl,spi", sysclk, board_infos,
 720                                num_board_infos, activate_cs, deactivate_cs);
 721         if (!ret)
 722                 of_fsl_spi_probe("spi", "fsl_spi", sysclk, board_infos,
 723                                  num_board_infos, activate_cs, deactivate_cs);
 724
 725         return spi_register_board_info(board_infos, num_board_infos);
 726 }
 727
 728 #if defined(CONFIG_PPC_85xx) || defined(CONFIG_PPC_86xx)
 729 static __be32 __iomem *rstcr;
 730
 731 static int __init setup_rstcr(void)
 732 {
 733         struct device_node *np;
 734         np = of_find_node_by_name(NULL, "global-utilities");
 735         if ((np && of_get_property(np, "fsl,has-rstcr", NULL))) {
 736                 const u32 *prop = of_get_property(np, "reg", NULL);
 737                 if (prop) {
 738                         /* map reset control register
 739                          * 0xE00B0 is offset of reset control register
 740                          */
 741                         rstcr = ioremap(get_immrbase() + *prop + 0xB0, 0xff);
 742                         if (!rstcr)
 743                                 printk (KERN_EMERG "Error: reset control "
 744                                                 "register not mapped!\n");
 745                 }
 746         } else
 747                 printk (KERN_INFO "rstcr compatible register does not exist!\n");
 748         if (np)
 749                 of_node_put(np);
 750         return 0;
 751 }
 752
 753 arch_initcall(setup_rstcr);
 754
 755 void fsl_rstcr_restart(char *cmd)
 756 {
 757         local_irq_disable();
 758         if (rstcr)
 759                 /* set reset control register */
 760                 out_be32(rstcr, 0x2);   /* HRESET_REQ */
 761
 762         while (1) ;
 763 }
 764 #endif
 765
 766 #if defined(CONFIG_FB_FSL_DIU) || defined(CONFIG_FB_FSL_DIU_MODULE)
 767 struct platform_diu_data_ops diu_ops = {
 768         .diu_size = 1280 * 1024 * 4,    /* default one 1280x1024 buffer */
 769 };
 770 EXPORT_SYMBOL(diu_ops);
 771
 772 int __init preallocate_diu_videomemory(void)
 773 {
 774         pr_debug("diu_size=%lu\n", diu_ops.diu_size);
 775
 776         diu_ops.diu_mem = __alloc_bootmem(diu_ops.diu_size, 8, 0);
 777         if (!diu_ops.diu_mem) {
 778                 printk(KERN_ERR "fsl-diu: cannot allocate %lu bytes\n",
 779                         diu_ops.diu_size);
 780                 return -ENOMEM;
 781         }
 782
 783         pr_debug("diu_mem=%p\n", diu_ops.diu_mem);
 784
 785         rh_init(&diu_ops.diu_rh_info, 4096, ARRAY_SIZE(diu_ops.diu_rh_block),
 786                 diu_ops.diu_rh_block);
 787         return rh_attach_region(&diu_ops.diu_rh_info,
 788                                 (unsigned long) diu_ops.diu_mem,
 789                                 diu_ops.diu_size);
 790 }
 791
 792 static int __init early_parse_diufb(char *p)
 793 {
 794         if (!p)
 795                 return 1;
 796
 797         diu_ops.diu_size = _ALIGN_UP(memparse(p, &p), 8);
 798
 799         pr_debug("diu_size=%lu\n", diu_ops.diu_size);
 800
 801         return 0;
 802 }
 803 early_param("diufb", early_parse_diufb);
 804
 805 #endif