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                 const 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                         const u32 *id = get_property(child, "reg", NULL);
  89                         mdio_data.irq[*id] = irq_of_parse_and_map(child, 0);
  90                 }
  91
  92                 ret =
  93                     platform_device_add_data(mdio_dev, &mdio_data,
  94                                              sizeof(struct gianfar_mdio_data));
  95                 if (ret)
  96                         goto unreg;
  97         }
  98
  99         return 0;
 100
 101 unreg:
 102         platform_device_unregister(mdio_dev);
 103 err:
 104         return ret;
 105 }
 106
 107 arch_initcall(gfar_mdio_of_init);
 108
 109 static const char *gfar_tx_intr = "tx";
 110 static const char *gfar_rx_intr = "rx";
 111 static const char *gfar_err_intr = "error";
 112
 113 static int __init gfar_of_init(void)
 114 {
 115         struct device_node *np;
 116         unsigned int i;
 117         struct platform_device *gfar_dev;
 118         struct resource res;
 119         int ret;
 120
 121         for (np = NULL, i = 0;
 122              (np = of_find_compatible_node(np, "network", "gianfar")) != NULL;
 123              i++) {
 124                 struct resource r[4];
 125                 struct device_node *phy, *mdio;
 126                 struct gianfar_platform_data gfar_data;
 127                 const unsigned int *id;
 128                 const char *model;
 129                 const void *mac_addr;
 130                 const phandle *ph;
 131                 int n_res = 1;
 132
 133                 memset(r, 0, sizeof(r));
 134                 memset(&gfar_data, 0, sizeof(gfar_data));
 135
 136                 ret = of_address_to_resource(np, 0, &r[0]);
 137                 if (ret)
 138                         goto err;
 139
 140                 r[1].start = r[1].end = irq_of_parse_and_map(np, 0);
 141                 r[1].flags = IORESOURCE_IRQ;
 142
 143                 model = get_property(np, "model", NULL);
 144
 145                 /* If we aren't the FEC we have multiple interrupts */
 146                 if (model && strcasecmp(model, "FEC")) {
 147                         r[1].name = gfar_tx_intr;
 148
 149                         r[2].name = gfar_rx_intr;
 150                         r[2].start = r[2].end = irq_of_parse_and_map(np, 1);
 151                         r[2].flags = IORESOURCE_IRQ;
 152
 153                         r[3].name = gfar_err_intr;
 154                         r[3].start = r[3].end = irq_of_parse_and_map(np, 2);
 155                         r[3].flags = IORESOURCE_IRQ;
 156
 157                         n_res += 2;
 158                 }
 159
 160                 gfar_dev =
 161                     platform_device_register_simple("fsl-gianfar", i, &r[0],
 162                                                     n_res + 1);
 163
 164                 if (IS_ERR(gfar_dev)) {
 165                         ret = PTR_ERR(gfar_dev);
 166                         goto err;
 167                 }
 168
 169                 mac_addr = get_property(np, "local-mac-address", NULL);
 170                 if (mac_addr == NULL)
 171                         mac_addr = get_property(np, "mac-address", NULL);
 172                 if (mac_addr == NULL) {
 173                         /* Obsolete */
 174                         mac_addr = get_property(np, "address", NULL);
 175                 }
 176
 177                 if (mac_addr)
 178                         memcpy(gfar_data.mac_addr, mac_addr, 6);
 179
 180                 if (model && !strcasecmp(model, "TSEC"))
 181                         gfar_data.device_flags =
 182                             FSL_GIANFAR_DEV_HAS_GIGABIT |
 183                             FSL_GIANFAR_DEV_HAS_COALESCE |
 184                             FSL_GIANFAR_DEV_HAS_RMON |
 185                             FSL_GIANFAR_DEV_HAS_MULTI_INTR;
 186                 if (model && !strcasecmp(model, "eTSEC"))
 187                         gfar_data.device_flags =
 188                             FSL_GIANFAR_DEV_HAS_GIGABIT |
 189                             FSL_GIANFAR_DEV_HAS_COALESCE |
 190                             FSL_GIANFAR_DEV_HAS_RMON |
 191                             FSL_GIANFAR_DEV_HAS_MULTI_INTR |
 192                             FSL_GIANFAR_DEV_HAS_CSUM |
 193                             FSL_GIANFAR_DEV_HAS_VLAN |
 194                             FSL_GIANFAR_DEV_HAS_EXTENDED_HASH;
 195
 196                 ph = get_property(np, "phy-handle", NULL);
 197                 phy = of_find_node_by_phandle(*ph);
 198
 199                 if (phy == NULL) {
 200                         ret = -ENODEV;
 201                         goto unreg;
 202                 }
 203
 204                 mdio = of_get_parent(phy);
 205
 206                 id = get_property(phy, "reg", NULL);
 207                 ret = of_address_to_resource(mdio, 0, &res);
 208                 if (ret) {
 209                         of_node_put(phy);
 210                         of_node_put(mdio);
 211                         goto unreg;
 212                 }
 213
 214                 gfar_data.phy_id = *id;
 215                 gfar_data.bus_id = res.start;
 216
 217                 of_node_put(phy);
 218                 of_node_put(mdio);
 219
 220                 ret =
 221                     platform_device_add_data(gfar_dev, &gfar_data,
 222                                              sizeof(struct
 223                                                     gianfar_platform_data));
 224                 if (ret)
 225                         goto unreg;
 226         }
 227
 228         return 0;
 229
 230 unreg:
 231         platform_device_unregister(gfar_dev);
 232 err:
 233         return ret;
 234 }
 235
 236 arch_initcall(gfar_of_init);
 237
 238 static int __init fsl_i2c_of_init(void)
 239 {
 240         struct device_node *np;
 241         unsigned int i;
 242         struct platform_device *i2c_dev;
 243         int ret;
 244
 245         for (np = NULL, i = 0;
 246              (np = of_find_compatible_node(np, "i2c", "fsl-i2c")) != NULL;
 247              i++) {
 248                 struct resource r[2];
 249                 struct fsl_i2c_platform_data i2c_data;
 250                 const unsigned char *flags = NULL;
 251
 252                 memset(&r, 0, sizeof(r));
 253                 memset(&i2c_data, 0, sizeof(i2c_data));
 254
 255                 ret = of_address_to_resource(np, 0, &r[0]);
 256                 if (ret)
 257                         goto err;
 258
 259                 r[1].start = r[1].end = irq_of_parse_and_map(np, 0);
 260                 r[1].flags = IORESOURCE_IRQ;
 261
 262                 i2c_dev = platform_device_register_simple("fsl-i2c", i, r, 2);
 263                 if (IS_ERR(i2c_dev)) {
 264                         ret = PTR_ERR(i2c_dev);
 265                         goto err;
 266                 }
 267
 268                 i2c_data.device_flags = 0;
 269                 flags = get_property(np, "dfsrr", NULL);
 270                 if (flags)
 271                         i2c_data.device_flags |= FSL_I2C_DEV_SEPARATE_DFSRR;
 272
 273                 flags = get_property(np, "fsl5200-clocking", NULL);
 274                 if (flags)
 275                         i2c_data.device_flags |= FSL_I2C_DEV_CLOCK_5200;
 276
 277                 ret =
 278                     platform_device_add_data(i2c_dev, &i2c_data,
 279                                              sizeof(struct
 280                                                     fsl_i2c_platform_data));
 281                 if (ret)
 282                         goto unreg;
 283         }
 284
 285         return 0;
 286
 287 unreg:
 288         platform_device_unregister(i2c_dev);
 289 err:
 290         return ret;
 291 }
 292
 293 arch_initcall(fsl_i2c_of_init);
 294
 295 #ifdef CONFIG_PPC_83xx
 296 static int __init mpc83xx_wdt_init(void)
 297 {
 298         struct resource r;
 299         struct device_node *soc, *np;
 300         struct platform_device *dev;
 301         const unsigned int *freq;
 302         int ret;
 303
 304         np = of_find_compatible_node(NULL, "watchdog", "mpc83xx_wdt");
 305
 306         if (!np) {
 307                 ret = -ENODEV;
 308                 goto nodev;
 309         }
 310
 311         soc = of_find_node_by_type(NULL, "soc");
 312
 313         if (!soc) {
 314                 ret = -ENODEV;
 315                 goto nosoc;
 316         }
 317
 318         freq = get_property(soc, "bus-frequency", NULL);
 319         if (!freq) {
 320                 ret = -ENODEV;
 321                 goto err;
 322         }
 323
 324         memset(&r, 0, sizeof(r));
 325
 326         ret = of_address_to_resource(np, 0, &r);
 327         if (ret)
 328                 goto err;
 329
 330         dev = platform_device_register_simple("mpc83xx_wdt", 0, &r, 1);
 331         if (IS_ERR(dev)) {
 332                 ret = PTR_ERR(dev);
 333                 goto err;
 334         }
 335
 336         ret = platform_device_add_data(dev, freq, sizeof(int));
 337         if (ret)
 338                 goto unreg;
 339
 340         of_node_put(soc);
 341         of_node_put(np);
 342
 343         return 0;
 344
 345 unreg:
 346         platform_device_unregister(dev);
 347 err:
 348         of_node_put(soc);
 349 nosoc:
 350         of_node_put(np);
 351 nodev:
 352         return ret;
 353 }
 354
 355 arch_initcall(mpc83xx_wdt_init);
 356 #endif
 357
 358 static enum fsl_usb2_phy_modes determine_usb_phy(const char *phy_type)
 359 {
 360         if (!phy_type)
 361                 return FSL_USB2_PHY_NONE;
 362         if (!strcasecmp(phy_type, "ulpi"))
 363                 return FSL_USB2_PHY_ULPI;
 364         if (!strcasecmp(phy_type, "utmi"))
 365                 return FSL_USB2_PHY_UTMI;
 366         if (!strcasecmp(phy_type, "utmi_wide"))
 367                 return FSL_USB2_PHY_UTMI_WIDE;
 368         if (!strcasecmp(phy_type, "serial"))
 369                 return FSL_USB2_PHY_SERIAL;
 370
 371         return FSL_USB2_PHY_NONE;
 372 }
 373
 374 static int __init fsl_usb_of_init(void)
 375 {
 376         struct device_node *np;
 377         unsigned int i;
 378         struct platform_device *usb_dev_mph = NULL, *usb_dev_dr = NULL;
 379         int ret;
 380
 381         for (np = NULL, i = 0;
 382              (np = of_find_compatible_node(np, "usb", "fsl-usb2-mph")) != NULL;
 383              i++) {
 384                 struct resource r[2];
 385                 struct fsl_usb2_platform_data usb_data;
 386                 const unsigned char *prop = NULL;
 387
 388                 memset(&r, 0, sizeof(r));
 389                 memset(&usb_data, 0, sizeof(usb_data));
 390
 391                 ret = of_address_to_resource(np, 0, &r[0]);
 392                 if (ret)
 393                         goto err;
 394
 395                 r[1].start = r[1].end = irq_of_parse_and_map(np, 0);
 396                 r[1].flags = IORESOURCE_IRQ;
 397
 398                 usb_dev_mph =
 399                     platform_device_register_simple("fsl-ehci", i, r, 2);
 400                 if (IS_ERR(usb_dev_mph)) {
 401                         ret = PTR_ERR(usb_dev_mph);
 402                         goto err;
 403                 }
 404
 405                 usb_dev_mph->dev.coherent_dma_mask = 0xffffffffUL;
 406                 usb_dev_mph->dev.dma_mask = &usb_dev_mph->dev.coherent_dma_mask;
 407
 408                 usb_data.operating_mode = FSL_USB2_MPH_HOST;
 409
 410                 prop = get_property(np, "port0", NULL);
 411                 if (prop)
 412                         usb_data.port_enables |= FSL_USB2_PORT0_ENABLED;
 413
 414                 prop = get_property(np, "port1", NULL);
 415                 if (prop)
 416                         usb_data.port_enables |= FSL_USB2_PORT1_ENABLED;
 417
 418                 prop = get_property(np, "phy_type", NULL);
 419                 usb_data.phy_mode = determine_usb_phy(prop);
 420
 421                 ret =
 422                     platform_device_add_data(usb_dev_mph, &usb_data,
 423                                              sizeof(struct
 424                                                     fsl_usb2_platform_data));
 425                 if (ret)
 426                         goto unreg_mph;
 427         }
 428
 429         for (np = NULL;
 430              (np = of_find_compatible_node(np, "usb", "fsl-usb2-dr")) != NULL;
 431              i++) {
 432                 struct resource r[2];
 433                 struct fsl_usb2_platform_data usb_data;
 434                 const unsigned char *prop = NULL;
 435
 436                 memset(&r, 0, sizeof(r));
 437                 memset(&usb_data, 0, sizeof(usb_data));
 438
 439                 ret = of_address_to_resource(np, 0, &r[0]);
 440                 if (ret)
 441                         goto unreg_mph;
 442
 443                 r[1].start = r[1].end = irq_of_parse_and_map(np, 0);
 444                 r[1].flags = IORESOURCE_IRQ;
 445
 446                 usb_dev_dr =
 447                     platform_device_register_simple("fsl-ehci", i, r, 2);
 448                 if (IS_ERR(usb_dev_dr)) {
 449                         ret = PTR_ERR(usb_dev_dr);
 450                         goto err;
 451                 }
 452
 453                 usb_dev_dr->dev.coherent_dma_mask = 0xffffffffUL;
 454                 usb_dev_dr->dev.dma_mask = &usb_dev_dr->dev.coherent_dma_mask;
 455
 456                 usb_data.operating_mode = FSL_USB2_DR_HOST;
 457
 458                 prop = get_property(np, "phy_type", NULL);
 459                 usb_data.phy_mode = determine_usb_phy(prop);
 460
 461                 ret =
 462                     platform_device_add_data(usb_dev_dr, &usb_data,
 463                                              sizeof(struct
 464                                                     fsl_usb2_platform_data));
 465                 if (ret)
 466                         goto unreg_dr;
 467         }
 468         return 0;
 469
 470 unreg_dr:
 471         if (usb_dev_dr)
 472                 platform_device_unregister(usb_dev_dr);
 473 unreg_mph:
 474         if (usb_dev_mph)
 475                 platform_device_unregister(usb_dev_mph);
 476 err:
 477         return ret;
 478 }
 479
 480 arch_initcall(fsl_usb_of_init);