arch/arm/plat-omap/devices.c

   1 /*
   2  * linux/arch/arm/plat-omap/devices.c
   3  *
   4  * Common platform device setup/initialization for OMAP1 and OMAP2
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  */
  11
  12 #include <linux/module.h>
  13 #include <linux/kernel.h>
  14 #include <linux/init.h>
  15 #include <linux/platform_device.h>
  16
  17 #include <asm/hardware.h>
  18 #include <asm/io.h>
  19 #include <asm/mach-types.h>
  20 #include <asm/mach/map.h>
  21
  22 #include <asm/arch/tc.h>
  23 #include <asm/arch/board.h>
  24 #include <asm/arch/mux.h>
  25 #include <asm/arch/gpio.h>
  26 #include <asm/arch/menelaus.h>
  27
  28 #if     defined(CONFIG_OMAP_DSP) || defined(CONFIG_OMAP_DSP_MODULE)
  29
  30 #include "../plat-omap/dsp/dsp_common.h"
  31
  32 static struct resource omap_dsp_resources[] = {
  33         {
  34                 .name   = "dsp_mmu",
  35                 .start  = -1,
  36                 .flags  = IORESOURCE_IRQ,
  37         },
  38 };
  39
  40 static struct platform_device omap_dsp_device = {
  41         .name           = "dsp",
  42         .id             = -1,
  43         .num_resources  = ARRAY_SIZE(omap_dsp_resources),
  44         .resource       = omap_dsp_resources,
  45 };
  46
  47
  48 static inline void omap_init_dsp(void)
  49 {
  50         struct resource *res;
  51         int irq;
  52
  53         if (cpu_is_omap15xx())
  54                 irq = INT_1510_DSP_MMU;
  55         else if (cpu_is_omap16xx())
  56                 irq = INT_1610_DSP_MMU;
  57         else if (cpu_is_omap24xx())
  58                 irq = INT_24XX_DSP_MMU;
  59
  60         res = platform_get_resource_byname(&omap_dsp_device,
  61                                            IORESOURCE_IRQ, "dsp_mmu");
  62         res->start = irq;
  63
  64         platform_device_register(&omap_dsp_device);
  65 }
  66 #else
  67 static inline void omap_init_dsp(void) { }
  68 #endif
  69
  70 /*-------------------------------------------------------------------------*/
  71
  72 #if     defined(CONFIG_I2C_OMAP) || defined(CONFIG_I2C_OMAP_MODULE)
  73
  74 #define OMAP1_I2C_BASE          0xfffb3800
  75 #define OMAP2_I2C_BASE1         0x48070000
  76 #define OMAP_I2C_SIZE           0x3f
  77 #define OMAP1_I2C_INT           INT_I2C
  78 #define OMAP2_I2C_INT1          56
  79
  80 static struct resource i2c_resources1[] = {
  81         {
  82                 .start          = 0,
  83                 .end            = 0,
  84                 .flags          = IORESOURCE_MEM,
  85         },
  86         {
  87                 .start          = 0,
  88                 .flags          = IORESOURCE_IRQ,
  89         },
  90 };
  91
  92 /* DMA not used; works around erratum writing to non-empty i2c fifo */
  93
  94 static struct platform_device omap_i2c_device1 = {
  95         .name           = "i2c_omap",
  96         .id             = 1,
  97         .num_resources  = ARRAY_SIZE(i2c_resources1),
  98         .resource       = i2c_resources1,
  99 };
 100
 101 /* See also arch/arm/mach-omap2/devices.c for second I2C on 24xx */
 102 static void omap_init_i2c(void)
 103 {
 104         if (cpu_is_omap24xx()) {
 105                 i2c_resources1[0].start = OMAP2_I2C_BASE1;
 106                 i2c_resources1[0].end = OMAP2_I2C_BASE1 + OMAP_I2C_SIZE;
 107                 i2c_resources1[1].start = OMAP2_I2C_INT1;
 108         } else {
 109                 i2c_resources1[0].start = OMAP1_I2C_BASE;
 110                 i2c_resources1[0].end = OMAP1_I2C_BASE + OMAP_I2C_SIZE;
 111                 i2c_resources1[1].start = OMAP1_I2C_INT;
 112         }
 113
 114         /* FIXME define and use a boot tag, in case of boards that
 115          * either don't wire up I2C, or chips that mux it differently...
 116          * it can include clocking and address info, maybe more.
 117          */
 118         if (cpu_is_omap24xx()) {
 119                 omap_cfg_reg(M19_24XX_I2C1_SCL);
 120                 omap_cfg_reg(L15_24XX_I2C1_SDA);
 121         } else {
 122                 omap_cfg_reg(I2C_SCL);
 123                 omap_cfg_reg(I2C_SDA);
 124         }
 125
 126         (void) platform_device_register(&omap_i2c_device1);
 127 }
 128
 129 #else
 130 static inline void omap_init_i2c(void) {}
 131 #endif
 132
 133 /*-------------------------------------------------------------------------*/
 134 #if     defined(CONFIG_KEYBOARD_OMAP) || defined(CONFIG_KEYBOARD_OMAP_MODULE)
 135
 136 static void omap_init_kp(void)
 137 {
 138         if (machine_is_omap_h2() || machine_is_omap_h3()) {
 139                 omap_cfg_reg(F18_1610_KBC0);
 140                 omap_cfg_reg(D20_1610_KBC1);
 141                 omap_cfg_reg(D19_1610_KBC2);
 142                 omap_cfg_reg(E18_1610_KBC3);
 143                 omap_cfg_reg(C21_1610_KBC4);
 144
 145                 omap_cfg_reg(G18_1610_KBR0);
 146                 omap_cfg_reg(F19_1610_KBR1);
 147                 omap_cfg_reg(H14_1610_KBR2);
 148                 omap_cfg_reg(E20_1610_KBR3);
 149                 omap_cfg_reg(E19_1610_KBR4);
 150                 omap_cfg_reg(N19_1610_KBR5);
 151         } else if (machine_is_omap_perseus2() || machine_is_omap_fsample()) {
 152                 omap_cfg_reg(E2_730_KBR0);
 153                 omap_cfg_reg(J7_730_KBR1);
 154                 omap_cfg_reg(E1_730_KBR2);
 155                 omap_cfg_reg(F3_730_KBR3);
 156                 omap_cfg_reg(D2_730_KBR4);
 157
 158                 omap_cfg_reg(C2_730_KBC0);
 159                 omap_cfg_reg(D3_730_KBC1);
 160                 omap_cfg_reg(E4_730_KBC2);
 161                 omap_cfg_reg(F4_730_KBC3);
 162                 omap_cfg_reg(E3_730_KBC4);
 163         } else if (machine_is_omap_h4()) {
 164                 omap_cfg_reg(T19_24XX_KBR0);
 165                 omap_cfg_reg(R19_24XX_KBR1);
 166                 omap_cfg_reg(V18_24XX_KBR2);
 167                 omap_cfg_reg(M21_24XX_KBR3);
 168                 omap_cfg_reg(E5__24XX_KBR4);
 169                 if (omap_has_menelaus()) {
 170                         omap_cfg_reg(B3__24XX_KBR5);
 171                         omap_cfg_reg(AA4_24XX_KBC2);
 172                         omap_cfg_reg(B13_24XX_KBC6);
 173                 } else {
 174                         omap_cfg_reg(M18_24XX_KBR5);
 175                         omap_cfg_reg(H19_24XX_KBC2);
 176                         omap_cfg_reg(N19_24XX_KBC6);
 177                 }
 178                 omap_cfg_reg(R20_24XX_KBC0);
 179                 omap_cfg_reg(M14_24XX_KBC1);
 180                 omap_cfg_reg(V17_24XX_KBC3);
 181                 omap_cfg_reg(P21_24XX_KBC4);
 182                 omap_cfg_reg(L14_24XX_KBC5);
 183         }
 184 }
 185 #else
 186 static inline void omap_init_kp(void) {}
 187 #endif
 188
 189 /*-------------------------------------------------------------------------*/
 190
 191 #if     defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
 192
 193 #ifdef CONFIG_ARCH_OMAP24XX
 194 #define OMAP_MMC1_BASE          0x4809c000
 195 #define OMAP_MMC1_INT           INT_24XX_MMC_IRQ
 196 #else
 197 #define OMAP_MMC1_BASE          0xfffb7800
 198 #define OMAP_MMC1_INT           INT_MMC
 199 #endif
 200 #define OMAP_MMC2_BASE          0xfffb7c00      /* omap16xx only */
 201
 202 static struct omap_mmc_conf mmc1_conf;
 203
 204 static u64 mmc1_dmamask = 0xffffffff;
 205
 206 static struct resource mmc1_resources[] = {
 207         {
 208                 .start          = OMAP_MMC1_BASE,
 209                 .end            = OMAP_MMC1_BASE + 0x7f,
 210                 .flags          = IORESOURCE_MEM,
 211         },
 212         {
 213                 .start          = OMAP_MMC1_INT,
 214                 .flags          = IORESOURCE_IRQ,
 215         },
 216 };
 217
 218 static struct platform_device mmc_omap_device1 = {
 219         .name           = "mmci-omap",
 220         .id             = 1,
 221         .dev = {
 222                 .dma_mask       = &mmc1_dmamask,
 223                 .platform_data  = &mmc1_conf,
 224         },
 225         .num_resources  = ARRAY_SIZE(mmc1_resources),
 226         .resource       = mmc1_resources,
 227 };
 228
 229 #ifdef  CONFIG_ARCH_OMAP16XX
 230
 231 static struct omap_mmc_conf mmc2_conf;
 232
 233 static u64 mmc2_dmamask = 0xffffffff;
 234
 235 static struct resource mmc2_resources[] = {
 236         {
 237                 .start          = OMAP_MMC2_BASE,
 238                 .end            = OMAP_MMC2_BASE + 0x7f,
 239                 .flags          = IORESOURCE_MEM,
 240         },
 241         {
 242                 .start          = INT_1610_MMC2,
 243                 .flags          = IORESOURCE_IRQ,
 244         },
 245 };
 246
 247 static struct platform_device mmc_omap_device2 = {
 248         .name           = "mmci-omap",
 249         .id             = 2,
 250         .dev = {
 251                 .dma_mask       = &mmc2_dmamask,
 252                 .platform_data  = &mmc2_conf,
 253         },
 254         .num_resources  = ARRAY_SIZE(mmc2_resources),
 255         .resource       = mmc2_resources,
 256 };
 257 #endif
 258
 259 static void __init omap_init_mmc(void)
 260 {
 261         const struct omap_mmc_config    *mmc_conf;
 262         const struct omap_mmc_conf      *mmc;
 263
 264         /* NOTE:  assumes MMC was never (wrongly) enabled */
 265         mmc_conf = omap_get_config(OMAP_TAG_MMC, struct omap_mmc_config);
 266         if (!mmc_conf)
 267                 return;
 268
 269         /* block 1 is always available and has just one pinout option */
 270         mmc = &mmc_conf->mmc[0];
 271         if (mmc->enabled) {
 272                 if (cpu_is_omap24xx()) {
 273                         omap_cfg_reg(H18_24XX_MMC_CMD);
 274                         omap_cfg_reg(H15_24XX_MMC_CLKI);
 275                         omap_cfg_reg(G19_24XX_MMC_CLKO);
 276                         omap_cfg_reg(F20_24XX_MMC_DAT0);
 277                         omap_cfg_reg(F19_24XX_MMC_DAT_DIR0);
 278                         omap_cfg_reg(G18_24XX_MMC_CMD_DIR);
 279                 } else {
 280                         omap_cfg_reg(MMC_CMD);
 281                         omap_cfg_reg(MMC_CLK);
 282                         omap_cfg_reg(MMC_DAT0);
 283                         if (cpu_is_omap1710()) {
 284                                 omap_cfg_reg(M15_1710_MMC_CLKI);
 285                                 omap_cfg_reg(P19_1710_MMC_CMDDIR);
 286                                 omap_cfg_reg(P20_1710_MMC_DATDIR0);
 287                         }
 288                 }
 289                 if (mmc->wire4) {
 290                         if (cpu_is_omap24xx()) {
 291                                 omap_cfg_reg(H14_24XX_MMC_DAT1);
 292                                 omap_cfg_reg(E19_24XX_MMC_DAT2);
 293                                 omap_cfg_reg(D19_24XX_MMC_DAT3);
 294                                 omap_cfg_reg(E20_24XX_MMC_DAT_DIR1);
 295                                 omap_cfg_reg(F18_24XX_MMC_DAT_DIR2);
 296                                 omap_cfg_reg(E18_24XX_MMC_DAT_DIR3);
 297                         } else {
 298                                 omap_cfg_reg(MMC_DAT1);
 299                                 /* NOTE:  DAT2 can be on W10 (here) or M15 */
 300                                 if (!mmc->nomux)
 301                                         omap_cfg_reg(MMC_DAT2);
 302                                 omap_cfg_reg(MMC_DAT3);
 303                         }
 304                 }
 305                 mmc1_conf = *mmc;
 306                 (void) platform_device_register(&mmc_omap_device1);
 307         }
 308
 309 #ifdef  CONFIG_ARCH_OMAP16XX
 310         /* block 2 is on newer chips, and has many pinout options */
 311         mmc = &mmc_conf->mmc[1];
 312         if (mmc->enabled) {
 313                 if (!mmc->nomux) {
 314                         omap_cfg_reg(Y8_1610_MMC2_CMD);
 315                         omap_cfg_reg(Y10_1610_MMC2_CLK);
 316                         omap_cfg_reg(R18_1610_MMC2_CLKIN);
 317                         omap_cfg_reg(W8_1610_MMC2_DAT0);
 318                         if (mmc->wire4) {
 319                                 omap_cfg_reg(V8_1610_MMC2_DAT1);
 320                                 omap_cfg_reg(W15_1610_MMC2_DAT2);
 321                                 omap_cfg_reg(R10_1610_MMC2_DAT3);
 322                         }
 323
 324                         /* These are needed for the level shifter */
 325                         omap_cfg_reg(V9_1610_MMC2_CMDDIR);
 326                         omap_cfg_reg(V5_1610_MMC2_DATDIR0);
 327                         omap_cfg_reg(W19_1610_MMC2_DATDIR1);
 328                 }
 329
 330                 /* Feedback clock must be set on OMAP-1710 MMC2 */
 331                 if (cpu_is_omap1710())
 332                         omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
 333                                      MOD_CONF_CTRL_1);
 334                 mmc2_conf = *mmc;
 335                 (void) platform_device_register(&mmc_omap_device2);
 336         }
 337 #endif
 338         return;
 339 }
 340 #else
 341 static inline void omap_init_mmc(void) {}
 342 #endif
 343
 344 /*-------------------------------------------------------------------------*/
 345
 346 /* Numbering for the SPI-capable controllers when used for SPI:
 347  * spi          = 1
 348  * uwire        = 2
 349  * mmc1..2      = 3..4
 350  * mcbsp1..3    = 5..7
 351  */
 352
 353 #if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE)
 354
 355 #define OMAP_UWIRE_BASE         0xfffb3000
 356
 357 static struct resource uwire_resources[] = {
 358         {
 359                 .start          = OMAP_UWIRE_BASE,
 360                 .end            = OMAP_UWIRE_BASE + 0x20,
 361                 .flags          = IORESOURCE_MEM,
 362         },
 363 };
 364
 365 static struct platform_device omap_uwire_device = {
 366         .name      = "omap_uwire",
 367         .id          = -1,
 368         .num_resources  = ARRAY_SIZE(uwire_resources),
 369         .resource       = uwire_resources,
 370 };
 371
 372 static void omap_init_uwire(void)
 373 {
 374         /* FIXME define and use a boot tag; not all boards will be hooking
 375          * up devices to the microwire controller, and multi-board configs
 376          * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
 377          */
 378
 379         /* board-specific code must configure chipselects (only a few
 380          * are normally used) and SCLK/SDI/SDO (each has two choices).
 381          */
 382         (void) platform_device_register(&omap_uwire_device);
 383 }
 384 #else
 385 static inline void omap_init_uwire(void) {}
 386 #endif
 387
 388 /*-------------------------------------------------------------------------*/
 389
 390 #if     defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
 391
 392 #ifdef CONFIG_ARCH_OMAP24XX
 393 #define OMAP_WDT_BASE           0x48022000
 394 #else
 395 #define OMAP_WDT_BASE           0xfffeb000
 396 #endif
 397
 398 static struct resource wdt_resources[] = {
 399         {
 400                 .start          = OMAP_WDT_BASE,
 401                 .end            = OMAP_WDT_BASE + 0x4f,
 402                 .flags          = IORESOURCE_MEM,
 403         },
 404 };
 405
 406 static struct platform_device omap_wdt_device = {
 407         .name      = "omap_wdt",
 408         .id          = -1,
 409         .num_resources  = ARRAY_SIZE(wdt_resources),
 410         .resource       = wdt_resources,
 411 };
 412
 413 static void omap_init_wdt(void)
 414 {
 415         (void) platform_device_register(&omap_wdt_device);
 416 }
 417 #else
 418 static inline void omap_init_wdt(void) {}
 419 #endif
 420
 421 /*-------------------------------------------------------------------------*/
 422
 423 #if     defined(CONFIG_OMAP_RNG) || defined(CONFIG_OMAP_RNG_MODULE)
 424
 425 #ifdef CONFIG_ARCH_OMAP24XX
 426 #define OMAP_RNG_BASE           0x480A0000
 427 #else
 428 #define OMAP_RNG_BASE           0xfffe5000
 429 #endif
 430
 431 static struct resource rng_resources[] = {
 432         {
 433                 .start          = OMAP_RNG_BASE,
 434                 .end            = OMAP_RNG_BASE + 0x4f,
 435                 .flags          = IORESOURCE_MEM,
 436         },
 437 };
 438
 439 static struct platform_device omap_rng_device = {
 440         .name      = "omap_rng",
 441         .id          = -1,
 442         .num_resources  = ARRAY_SIZE(rng_resources),
 443         .resource       = rng_resources,
 444 };
 445
 446 static void omap_init_rng(void)
 447 {
 448         (void) platform_device_register(&omap_rng_device);
 449 }
 450 #else
 451 static inline void omap_init_rng(void) {}
 452 #endif
 453
 454 /*
 455  * This gets called after board-specific INIT_MACHINE, and initializes most
 456  * on-chip peripherals accessible on this board (except for few like USB):
 457  *
 458  *  (a) Does any "standard config" pin muxing needed.  Board-specific
 459  *      code will have muxed GPIO pins and done "nonstandard" setup;
 460  *      that code could live in the boot loader.
 461  *  (b) Populating board-specific platform_data with the data drivers
 462  *      rely on to handle wiring variations.
 463  *  (c) Creating platform devices as meaningful on this board and
 464  *      with this kernel configuration.
 465  *
 466  * Claiming GPIOs, and setting their direction and initial values, is the
 467  * responsibility of the device drivers.  So is responding to probe().
 468  *
 469  * Board-specific knowlege like creating devices or pin setup is to be
 470  * kept out of drivers as much as possible.  In particular, pin setup
 471  * may be handled by the boot loader, and drivers should expect it will
 472  * normally have been done by the time they're probed.
 473  */
 474 static int __init omap_init_devices(void)
 475 {
 476         /* please keep these calls, and their implementations above,
 477          * in alphabetical order so they're easier to sort through.
 478          */
 479         omap_init_dsp();
 480         omap_init_i2c();
 481         omap_init_kp();
 482         omap_init_mmc();
 483         omap_init_uwire();
 484         omap_init_wdt();
 485         omap_init_rng();
 486
 487         return 0;
 488 }
 489 arch_initcall(omap_init_devices);