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  * This program is free software; you can redistribute  it and/or modify it
   7  * under  the terms of  the GNU General  Public License as published by the
   8  * Free Software Foundation;  either version 2 of the  License, or (at your
   9  * option) any later version.
  10  */
  11
  12 #include <linux/stddef.h>
  13 #include <linux/kernel.h>
  14 #include <linux/init.h>
  15 #include <linux/errno.h>
  16 #include <linux/major.h>
  17 #include <linux/delay.h>
  18 #include <linux/irq.h>
  19 #include <linux/module.h>
  20 #include <linux/device.h>
  21 #include <linux/platform_device.h>
  22 #include <linux/fsl_devices.h>
  23
  24 #include <asm/system.h>
  25 #include <asm/atomic.h>
  26 #include <asm/io.h>
  27 #include <asm/irq.h>
  28 #include <asm/prom.h>
  29 #include <sysdev/fsl_soc.h>
  30 #include <mm/mmu_decl.h>
  31
  32 static phys_addr_t immrbase = -1;
  33
  34 phys_addr_t get_immrbase(void)
  35 {
  36         struct device_node *soc;
  37
  38         if (immrbase != -1)
  39                 return immrbase;
  40
  41         soc = of_find_node_by_type(NULL, "soc");
  42         if (soc) {
  43                 unsigned int size;
  44                 void *prop = get_property(soc, "reg", &size);
  45                 immrbase = of_translate_address(soc, prop);
  46                 of_node_put(soc);
  47         };
  48
  49         return immrbase;
  50 }
  51
  52 EXPORT_SYMBOL(get_immrbase);
  53
  54 static int __init gfar_mdio_of_init(void)
  55 {
  56         struct device_node *np;
  57         unsigned int i;
  58         struct platform_device *mdio_dev;
  59         struct resource res;
  60         int ret;
  61
  62         for (np = NULL, i = 0;
  63              (np = of_find_compatible_node(np, "mdio", "gianfar")) != NULL;
  64              i++) {
  65                 int k;
  66                 struct device_node *child = NULL;
  67                 struct gianfar_mdio_data mdio_data;
  68
  69                 memset(&res, 0, sizeof(res));
  70                 memset(&mdio_data, 0, sizeof(mdio_data));
  71
  72                 ret = of_address_to_resource(np, 0, &res);
  73                 if (ret)
  74                         goto err;
  75
  76                 mdio_dev =
  77                     platform_device_register_simple("fsl-gianfar_mdio",
  78                                                     res.start, &res, 1);
  79                 if (IS_ERR(mdio_dev)) {
  80                         ret = PTR_ERR(mdio_dev);
  81                         goto err;
  82                 }
  83
  84                 for (k = 0; k < 32; k++)
  85                         mdio_data.irq[k] = -1;
  86
  87                 while ((child = of_get_next_child(np, child)) != NULL) {
  88                         if (child->n_intrs) {
  89                                 u32 *id =
  90                                     (u32 *) get_property(child, "reg", NULL);
  91                                 mdio_data.irq[*id] = child->intrs[0].line;
  92                         }
  93                 }
  94
  95                 ret =
  96                     platform_device_add_data(mdio_dev, &mdio_data,
  97                                              sizeof(struct gianfar_mdio_data));
  98                 if (ret)
  99                         goto unreg;
 100         }
 101
 102         return 0;
 103
 104 unreg:
 105         platform_device_unregister(mdio_dev);
 106 err:
 107         return ret;
 108 }
 109
 110 arch_initcall(gfar_mdio_of_init);
 111
 112 static const char *gfar_tx_intr = "tx";
 113 static const char *gfar_rx_intr = "rx";
 114 static const char *gfar_err_intr = "error";
 115
 116 static int __init gfar_of_init(void)
 117 {
 118         struct device_node *np;
 119         unsigned int i;
 120         struct platform_device *gfar_dev;
 121         struct resource res;
 122         int ret;
 123
 124         for (np = NULL, i = 0;
 125              (np = of_find_compatible_node(np, "network", "gianfar")) != NULL;
 126              i++) {
 127                 struct resource r[4];
 128                 struct device_node *phy, *mdio;
 129                 struct gianfar_platform_data gfar_data;
 130                 unsigned int *id;
 131                 char *model;
 132                 void *mac_addr;
 133                 phandle *ph;
 134
 135                 memset(r, 0, sizeof(r));
 136                 memset(&gfar_data, 0, sizeof(gfar_data));
 137
 138                 ret = of_address_to_resource(np, 0, &r[0]);
 139                 if (ret)
 140                         goto err;
 141
 142                 r[1].start = np->intrs[0].line;
 143                 r[1].end = np->intrs[0].line;
 144                 r[1].flags = IORESOURCE_IRQ;
 145
 146                 model = get_property(np, "model", NULL);
 147
 148                 /* If we aren't the FEC we have multiple interrupts */
 149                 if (model && strcasecmp(model, "FEC")) {
 150                         r[1].name = gfar_tx_intr;
 151
 152                         r[2].name = gfar_rx_intr;
 153                         r[2].start = np->intrs[1].line;
 154                         r[2].end = np->intrs[1].line;
 155                         r[2].flags = IORESOURCE_IRQ;
 156
 157                         r[3].name = gfar_err_intr;
 158                         r[3].start = np->intrs[2].line;
 159                         r[3].end = np->intrs[2].line;
 160                         r[3].flags = IORESOURCE_IRQ;
 161                 }
 162
 163                 gfar_dev =
 164                     platform_device_register_simple("fsl-gianfar", i, &r[0],
 165                                                     np->n_intrs + 1);
 166
 167                 if (IS_ERR(gfar_dev)) {
 168                         ret = PTR_ERR(gfar_dev);
 169                         goto err;
 170                 }
 171
 172                 mac_addr = get_property(np, "local-mac-address", NULL);
 173                 if (mac_addr == NULL)
 174                         mac_addr = get_property(np, "mac-address", NULL);
 175                 if (mac_addr == NULL) {
 176                         /* Obsolete */
 177                         mac_addr = get_property(np, "address", NULL);
 178                 }
 179
 180                 if (mac_addr)
 181                         memcpy(gfar_data.mac_addr, mac_addr, 6);
 182
 183                 if (model && !strcasecmp(model, "TSEC"))
 184                         gfar_data.device_flags =
 185                             FSL_GIANFAR_DEV_HAS_GIGABIT |
 186                             FSL_GIANFAR_DEV_HAS_COALESCE |
 187                             FSL_GIANFAR_DEV_HAS_RMON |
 188                             FSL_GIANFAR_DEV_HAS_MULTI_INTR;
 189                 if (model && !strcasecmp(model, "eTSEC"))
 190                         gfar_data.device_flags =
 191                             FSL_GIANFAR_DEV_HAS_GIGABIT |
 192                             FSL_GIANFAR_DEV_HAS_COALESCE |
 193                             FSL_GIANFAR_DEV_HAS_RMON |
 194                             FSL_GIANFAR_DEV_HAS_MULTI_INTR |
 195                             FSL_GIANFAR_DEV_HAS_CSUM |
 196                             FSL_GIANFAR_DEV_HAS_VLAN |
 197                             FSL_GIANFAR_DEV_HAS_EXTENDED_HASH;
 198
 199                 ph = (phandle *) get_property(np, "phy-handle", NULL);
 200                 phy = of_find_node_by_phandle(*ph);
 201
 202                 if (phy == NULL) {
 203                         ret = -ENODEV;
 204                         goto unreg;
 205                 }
 206
 207                 mdio = of_get_parent(phy);
 208
 209                 id = (u32 *) get_property(phy, "reg", NULL);
 210                 ret = of_address_to_resource(mdio, 0, &res);
 211                 if (ret) {
 212                         of_node_put(phy);
 213                         of_node_put(mdio);
 214                         goto unreg;
 215                 }
 216
 217                 gfar_data.phy_id = *id;
 218                 gfar_data.bus_id = res.start;
 219
 220                 of_node_put(phy);
 221                 of_node_put(mdio);
 222
 223                 ret =
 224                     platform_device_add_data(gfar_dev, &gfar_data,
 225                                              sizeof(struct
 226                                                     gianfar_platform_data));
 227                 if (ret)
 228                         goto unreg;
 229         }
 230
 231         return 0;
 232
 233 unreg:
 234         platform_device_unregister(gfar_dev);
 235 err:
 236         return ret;
 237 }
 238
 239 arch_initcall(gfar_of_init);
 240
 241 static int __init fsl_i2c_of_init(void)
 242 {
 243         struct device_node *np;
 244         unsigned int i;
 245         struct platform_device *i2c_dev;
 246         int ret;
 247
 248         for (np = NULL, i = 0;
 249              (np = of_find_compatible_node(np, "i2c", "fsl-i2c")) != NULL;
 250              i++) {
 251                 struct resource r[2];
 252                 struct fsl_i2c_platform_data i2c_data;
 253                 unsigned char *flags = NULL;
 254
 255                 memset(&r, 0, sizeof(r));
 256                 memset(&i2c_data, 0, sizeof(i2c_data));
 257
 258                 ret = of_address_to_resource(np, 0, &r[0]);
 259                 if (ret)
 260                         goto err;
 261
 262                 r[1].start = np->intrs[0].line;
 263                 r[1].end = np->intrs[0].line;
 264                 r[1].flags = IORESOURCE_IRQ;
 265
 266                 i2c_dev = platform_device_register_simple("fsl-i2c", i, r, 2);
 267                 if (IS_ERR(i2c_dev)) {
 268                         ret = PTR_ERR(i2c_dev);
 269                         goto err;
 270                 }
 271
 272                 i2c_data.device_flags = 0;
 273                 flags = get_property(np, "dfsrr", NULL);
 274                 if (flags)
 275                         i2c_data.device_flags |= FSL_I2C_DEV_SEPARATE_DFSRR;
 276
 277                 flags = get_property(np, "fsl5200-clocking", NULL);
 278                 if (flags)
 279                         i2c_data.device_flags |= FSL_I2C_DEV_CLOCK_5200;
 280
 281                 ret =
 282                     platform_device_add_data(i2c_dev, &i2c_data,
 283                                              sizeof(struct
 284                                                     fsl_i2c_platform_data));
 285                 if (ret)
 286                         goto unreg;
 287         }
 288
 289         return 0;
 290
 291 unreg:
 292         platform_device_unregister(i2c_dev);
 293 err:
 294         return ret;
 295 }
 296
 297 arch_initcall(fsl_i2c_of_init);
 298
 299 #ifdef CONFIG_PPC_83xx
 300 static int __init mpc83xx_wdt_init(void)
 301 {
 302         struct resource r;
 303         struct device_node *soc, *np;
 304         struct platform_device *dev;
 305         unsigned int *freq;
 306         int ret;
 307
 308         np = of_find_compatible_node(NULL, "watchdog", "mpc83xx_wdt");
 309
 310         if (!np) {
 311                 ret = -ENODEV;
 312                 goto nodev;
 313         }
 314
 315         soc = of_find_node_by_type(NULL, "soc");
 316
 317         if (!soc) {
 318                 ret = -ENODEV;
 319                 goto nosoc;
 320         }
 321
 322         freq = (unsigned int *)get_property(soc, "bus-frequency", NULL);
 323         if (!freq) {
 324                 ret = -ENODEV;
 325                 goto err;
 326         }
 327
 328         memset(&r, 0, sizeof(r));
 329
 330         ret = of_address_to_resource(np, 0, &r);
 331         if (ret)
 332                 goto err;
 333
 334         dev = platform_device_register_simple("mpc83xx_wdt", 0, &r, 1);
 335         if (IS_ERR(dev)) {
 336                 ret = PTR_ERR(dev);
 337                 goto err;
 338         }
 339
 340         ret = platform_device_add_data(dev, freq, sizeof(int));
 341         if (ret)
 342                 goto unreg;
 343
 344         of_node_put(soc);
 345         of_node_put(np);
 346
 347         return 0;
 348
 349 unreg:
 350         platform_device_unregister(dev);
 351 err:
 352         of_node_put(soc);
 353 nosoc:
 354         of_node_put(np);
 355 nodev:
 356         return ret;
 357 }
 358
 359 arch_initcall(mpc83xx_wdt_init);
 360 #endif
 361
 362 static enum fsl_usb2_phy_modes determine_usb_phy(char * phy_type)
 363 {
 364         if (!phy_type)
 365                 return FSL_USB2_PHY_NONE;
 366         if (!strcasecmp(phy_type, "ulpi"))
 367                 return FSL_USB2_PHY_ULPI;
 368         if (!strcasecmp(phy_type, "utmi"))
 369                 return FSL_USB2_PHY_UTMI;
 370         if (!strcasecmp(phy_type, "utmi_wide"))
 371                 return FSL_USB2_PHY_UTMI_WIDE;
 372         if (!strcasecmp(phy_type, "serial"))
 373                 return FSL_USB2_PHY_SERIAL;
 374
 375         return FSL_USB2_PHY_NONE;
 376 }
 377
 378 static int __init fsl_usb_of_init(void)
 379 {
 380         struct device_node *np;
 381         unsigned int i;
 382         struct platform_device *usb_dev_mph = NULL, *usb_dev_dr = NULL;
 383         int ret;
 384
 385         for (np = NULL, i = 0;
 386              (np = of_find_compatible_node(np, "usb", "fsl-usb2-mph")) != NULL;
 387              i++) {
 388                 struct resource r[2];
 389                 struct fsl_usb2_platform_data usb_data;
 390                 unsigned char *prop = NULL;
 391
 392                 memset(&r, 0, sizeof(r));
 393                 memset(&usb_data, 0, sizeof(usb_data));
 394
 395                 ret = of_address_to_resource(np, 0, &r[0]);
 396                 if (ret)
 397                         goto err;
 398
 399                 r[1].start = np->intrs[0].line;
 400                 r[1].end = np->intrs[0].line;
 401                 r[1].flags = IORESOURCE_IRQ;
 402
 403                 usb_dev_mph =
 404                     platform_device_register_simple("fsl-ehci", i, r, 2);
 405                 if (IS_ERR(usb_dev_mph)) {
 406                         ret = PTR_ERR(usb_dev_mph);
 407                         goto err;
 408                 }
 409
 410                 usb_dev_mph->dev.coherent_dma_mask = 0xffffffffUL;
 411                 usb_dev_mph->dev.dma_mask = &usb_dev_mph->dev.coherent_dma_mask;
 412
 413                 usb_data.operating_mode = FSL_USB2_MPH_HOST;
 414
 415                 prop = get_property(np, "port0", NULL);
 416                 if (prop)
 417                         usb_data.port_enables |= FSL_USB2_PORT0_ENABLED;
 418
 419                 prop = get_property(np, "port1", NULL);
 420                 if (prop)
 421                         usb_data.port_enables |= FSL_USB2_PORT1_ENABLED;
 422
 423                 prop = get_property(np, "phy_type", NULL);
 424                 usb_data.phy_mode = determine_usb_phy(prop);
 425
 426                 ret =
 427                     platform_device_add_data(usb_dev_mph, &usb_data,
 428                                              sizeof(struct
 429                                                     fsl_usb2_platform_data));
 430                 if (ret)
 431                         goto unreg_mph;
 432         }
 433
 434         for (np = NULL;
 435              (np = of_find_compatible_node(np, "usb", "fsl-usb2-dr")) != NULL;
 436              i++) {
 437                 struct resource r[2];
 438                 struct fsl_usb2_platform_data usb_data;
 439                 unsigned char *prop = NULL;
 440
 441                 memset(&r, 0, sizeof(r));
 442                 memset(&usb_data, 0, sizeof(usb_data));
 443
 444                 ret = of_address_to_resource(np, 0, &r[0]);
 445                 if (ret)
 446                         goto unreg_mph;
 447
 448                 r[1].start = np->intrs[0].line;
 449                 r[1].end = np->intrs[0].line;
 450                 r[1].flags = IORESOURCE_IRQ;
 451
 452                 usb_dev_dr =
 453                     platform_device_register_simple("fsl-ehci", i, r, 2);
 454                 if (IS_ERR(usb_dev_dr)) {
 455                         ret = PTR_ERR(usb_dev_dr);
 456                         goto err;
 457                 }
 458
 459                 usb_dev_dr->dev.coherent_dma_mask = 0xffffffffUL;
 460                 usb_dev_dr->dev.dma_mask = &usb_dev_dr->dev.coherent_dma_mask;
 461
 462                 usb_data.operating_mode = FSL_USB2_DR_HOST;
 463
 464                 prop = get_property(np, "phy_type", NULL);
 465                 usb_data.phy_mode = determine_usb_phy(prop);
 466
 467                 ret =
 468                     platform_device_add_data(usb_dev_dr, &usb_data,
 469                                              sizeof(struct
 470                                                     fsl_usb2_platform_data));
 471                 if (ret)
 472                         goto unreg_dr;
 473         }
 474         return 0;
 475
 476 unreg_dr:
 477         if (usb_dev_dr)
 478                 platform_device_unregister(usb_dev_dr);
 479 unreg_mph:
 480         if (usb_dev_mph)
 481                 platform_device_unregister(usb_dev_mph);
 482 err:
 483         return ret;
 484 }
 485
 486 arch_initcall(fsl_usb_of_init);