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, "address", NULL);
 170                 memcpy(gfar_data.mac_addr, mac_addr, 6);
 171
 172                 if (model && !strcasecmp(model, "TSEC"))
 173                         gfar_data.device_flags =
 174                             FSL_GIANFAR_DEV_HAS_GIGABIT |
 175                             FSL_GIANFAR_DEV_HAS_COALESCE |
 176                             FSL_GIANFAR_DEV_HAS_RMON |
 177                             FSL_GIANFAR_DEV_HAS_MULTI_INTR;
 178                 if (model && !strcasecmp(model, "eTSEC"))
 179                         gfar_data.device_flags =
 180                             FSL_GIANFAR_DEV_HAS_GIGABIT |
 181                             FSL_GIANFAR_DEV_HAS_COALESCE |
 182                             FSL_GIANFAR_DEV_HAS_RMON |
 183                             FSL_GIANFAR_DEV_HAS_MULTI_INTR |
 184                             FSL_GIANFAR_DEV_HAS_CSUM |
 185                             FSL_GIANFAR_DEV_HAS_VLAN |
 186                             FSL_GIANFAR_DEV_HAS_EXTENDED_HASH;
 187
 188                 ph = get_property(np, "phy-handle", NULL);
 189                 phy = of_find_node_by_phandle(*ph);
 190
 191                 if (phy == NULL) {
 192                         ret = -ENODEV;
 193                         goto unreg;
 194                 }
 195
 196                 mdio = of_get_parent(phy);
 197
 198                 id = get_property(phy, "reg", NULL);
 199                 ret = of_address_to_resource(mdio, 0, &res);
 200                 if (ret) {
 201                         of_node_put(phy);
 202                         of_node_put(mdio);
 203                         goto unreg;
 204                 }
 205
 206                 gfar_data.phy_id = *id;
 207                 gfar_data.bus_id = res.start;
 208
 209                 of_node_put(phy);
 210                 of_node_put(mdio);
 211
 212                 ret =
 213                     platform_device_add_data(gfar_dev, &gfar_data,
 214                                              sizeof(struct
 215                                                     gianfar_platform_data));
 216                 if (ret)
 217                         goto unreg;
 218         }
 219
 220         return 0;
 221
 222 unreg:
 223         platform_device_unregister(gfar_dev);
 224 err:
 225         return ret;
 226 }
 227
 228 arch_initcall(gfar_of_init);
 229
 230 static int __init fsl_i2c_of_init(void)
 231 {
 232         struct device_node *np;
 233         unsigned int i;
 234         struct platform_device *i2c_dev;
 235         int ret;
 236
 237         for (np = NULL, i = 0;
 238              (np = of_find_compatible_node(np, "i2c", "fsl-i2c")) != NULL;
 239              i++) {
 240                 struct resource r[2];
 241                 struct fsl_i2c_platform_data i2c_data;
 242                 const unsigned char *flags = NULL;
 243
 244                 memset(&r, 0, sizeof(r));
 245                 memset(&i2c_data, 0, sizeof(i2c_data));
 246
 247                 ret = of_address_to_resource(np, 0, &r[0]);
 248                 if (ret)
 249                         goto err;
 250
 251                 r[1].start = r[1].end = irq_of_parse_and_map(np, 0);
 252                 r[1].flags = IORESOURCE_IRQ;
 253
 254                 i2c_dev = platform_device_register_simple("fsl-i2c", i, r, 2);
 255                 if (IS_ERR(i2c_dev)) {
 256                         ret = PTR_ERR(i2c_dev);
 257                         goto err;
 258                 }
 259
 260                 i2c_data.device_flags = 0;
 261                 flags = get_property(np, "dfsrr", NULL);
 262                 if (flags)
 263                         i2c_data.device_flags |= FSL_I2C_DEV_SEPARATE_DFSRR;
 264
 265                 flags = get_property(np, "fsl5200-clocking", NULL);
 266                 if (flags)
 267                         i2c_data.device_flags |= FSL_I2C_DEV_CLOCK_5200;
 268
 269                 ret =
 270                     platform_device_add_data(i2c_dev, &i2c_data,
 271                                              sizeof(struct
 272                                                     fsl_i2c_platform_data));
 273                 if (ret)
 274                         goto unreg;
 275         }
 276
 277         return 0;
 278
 279 unreg:
 280         platform_device_unregister(i2c_dev);
 281 err:
 282         return ret;
 283 }
 284
 285 arch_initcall(fsl_i2c_of_init);
 286
 287 #ifdef CONFIG_PPC_83xx
 288 static int __init mpc83xx_wdt_init(void)
 289 {
 290         struct resource r;
 291         struct device_node *soc, *np;
 292         struct platform_device *dev;
 293         const unsigned int *freq;
 294         int ret;
 295
 296         np = of_find_compatible_node(NULL, "watchdog", "mpc83xx_wdt");
 297
 298         if (!np) {
 299                 ret = -ENODEV;
 300                 goto nodev;
 301         }
 302
 303         soc = of_find_node_by_type(NULL, "soc");
 304
 305         if (!soc) {
 306                 ret = -ENODEV;
 307                 goto nosoc;
 308         }
 309
 310         freq = get_property(soc, "bus-frequency", NULL);
 311         if (!freq) {
 312                 ret = -ENODEV;
 313                 goto err;
 314         }
 315
 316         memset(&r, 0, sizeof(r));
 317
 318         ret = of_address_to_resource(np, 0, &r);
 319         if (ret)
 320                 goto err;
 321
 322         dev = platform_device_register_simple("mpc83xx_wdt", 0, &r, 1);
 323         if (IS_ERR(dev)) {
 324                 ret = PTR_ERR(dev);
 325                 goto err;
 326         }
 327
 328         ret = platform_device_add_data(dev, freq, sizeof(int));
 329         if (ret)
 330                 goto unreg;
 331
 332         of_node_put(soc);
 333         of_node_put(np);
 334
 335         return 0;
 336
 337 unreg:
 338         platform_device_unregister(dev);
 339 err:
 340         of_node_put(soc);
 341 nosoc:
 342         of_node_put(np);
 343 nodev:
 344         return ret;
 345 }
 346
 347 arch_initcall(mpc83xx_wdt_init);
 348 #endif
 349
 350 static enum fsl_usb2_phy_modes determine_usb_phy(const char *phy_type)
 351 {
 352         if (!phy_type)
 353                 return FSL_USB2_PHY_NONE;
 354         if (!strcasecmp(phy_type, "ulpi"))
 355                 return FSL_USB2_PHY_ULPI;
 356         if (!strcasecmp(phy_type, "utmi"))
 357                 return FSL_USB2_PHY_UTMI;
 358         if (!strcasecmp(phy_type, "utmi_wide"))
 359                 return FSL_USB2_PHY_UTMI_WIDE;
 360         if (!strcasecmp(phy_type, "serial"))
 361                 return FSL_USB2_PHY_SERIAL;
 362
 363         return FSL_USB2_PHY_NONE;
 364 }
 365
 366 static int __init fsl_usb_of_init(void)
 367 {
 368         struct device_node *np;
 369         unsigned int i;
 370         struct platform_device *usb_dev_mph = NULL, *usb_dev_dr = NULL;
 371         int ret;
 372
 373         for (np = NULL, i = 0;
 374              (np = of_find_compatible_node(np, "usb", "fsl-usb2-mph")) != NULL;
 375              i++) {
 376                 struct resource r[2];
 377                 struct fsl_usb2_platform_data usb_data;
 378                 const unsigned char *prop = NULL;
 379
 380                 memset(&r, 0, sizeof(r));
 381                 memset(&usb_data, 0, sizeof(usb_data));
 382
 383                 ret = of_address_to_resource(np, 0, &r[0]);
 384                 if (ret)
 385                         goto err;
 386
 387                 r[1].start = r[1].end = irq_of_parse_and_map(np, 0);
 388                 r[1].flags = IORESOURCE_IRQ;
 389
 390                 usb_dev_mph =
 391                     platform_device_register_simple("fsl-ehci", i, r, 2);
 392                 if (IS_ERR(usb_dev_mph)) {
 393                         ret = PTR_ERR(usb_dev_mph);
 394                         goto err;
 395                 }
 396
 397                 usb_dev_mph->dev.coherent_dma_mask = 0xffffffffUL;
 398                 usb_dev_mph->dev.dma_mask = &usb_dev_mph->dev.coherent_dma_mask;
 399
 400                 usb_data.operating_mode = FSL_USB2_MPH_HOST;
 401
 402                 prop = get_property(np, "port0", NULL);
 403                 if (prop)
 404                         usb_data.port_enables |= FSL_USB2_PORT0_ENABLED;
 405
 406                 prop = get_property(np, "port1", NULL);
 407                 if (prop)
 408                         usb_data.port_enables |= FSL_USB2_PORT1_ENABLED;
 409
 410                 prop = get_property(np, "phy_type", NULL);
 411                 usb_data.phy_mode = determine_usb_phy(prop);
 412
 413                 ret =
 414                     platform_device_add_data(usb_dev_mph, &usb_data,
 415                                              sizeof(struct
 416                                                     fsl_usb2_platform_data));
 417                 if (ret)
 418                         goto unreg_mph;
 419         }
 420
 421         for (np = NULL;
 422              (np = of_find_compatible_node(np, "usb", "fsl-usb2-dr")) != NULL;
 423              i++) {
 424                 struct resource r[2];
 425                 struct fsl_usb2_platform_data usb_data;
 426                 const unsigned char *prop = NULL;
 427
 428                 memset(&r, 0, sizeof(r));
 429                 memset(&usb_data, 0, sizeof(usb_data));
 430
 431                 ret = of_address_to_resource(np, 0, &r[0]);
 432                 if (ret)
 433                         goto unreg_mph;
 434
 435                 r[1].start = r[1].end = irq_of_parse_and_map(np, 0);
 436                 r[1].flags = IORESOURCE_IRQ;
 437
 438                 usb_dev_dr =
 439                     platform_device_register_simple("fsl-ehci", i, r, 2);
 440                 if (IS_ERR(usb_dev_dr)) {
 441                         ret = PTR_ERR(usb_dev_dr);
 442                         goto err;
 443                 }
 444
 445                 usb_dev_dr->dev.coherent_dma_mask = 0xffffffffUL;
 446                 usb_dev_dr->dev.dma_mask = &usb_dev_dr->dev.coherent_dma_mask;
 447
 448                 usb_data.operating_mode = FSL_USB2_DR_HOST;
 449
 450                 prop = get_property(np, "phy_type", NULL);
 451                 usb_data.phy_mode = determine_usb_phy(prop);
 452
 453                 ret =
 454                     platform_device_add_data(usb_dev_dr, &usb_data,
 455                                              sizeof(struct
 456                                                     fsl_usb2_platform_data));
 457                 if (ret)
 458                         goto unreg_dr;
 459         }
 460         return 0;
 461
 462 unreg_dr:
 463         if (usb_dev_dr)
 464                 platform_device_unregister(usb_dev_dr);
 465 unreg_mph:
 466         if (usb_dev_mph)
 467                 platform_device_unregister(usb_dev_mph);
 468 err:
 469         return ret;
 470 }
 471
 472 arch_initcall(fsl_usb_of_init);