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 dsp_platform_data dsp_pdata = {
  33         .kdev_list = LIST_HEAD_INIT(dsp_pdata.kdev_list),
  34 };
  35
  36 static struct resource omap_dsp_resources[] = {
  37         {
  38                 .name   = "dsp_mmu",
  39                 .start  = -1,
  40                 .flags  = IORESOURCE_IRQ,
  41         },
  42 };
  43
  44 static struct platform_device omap_dsp_device = {
  45         .name           = "dsp",
  46         .id             = -1,
  47         .num_resources  = ARRAY_SIZE(omap_dsp_resources),
  48         .resource       = omap_dsp_resources,
  49         .dev = {
  50                 .platform_data = &dsp_pdata,
  51         },
  52 };
  53
  54 static inline void omap_init_dsp(void)
  55 {
  56         struct resource *res;
  57         int irq;
  58
  59         if (cpu_is_omap15xx())
  60                 irq = INT_1510_DSP_MMU;
  61         else if (cpu_is_omap16xx())
  62                 irq = INT_1610_DSP_MMU;
  63         else if (cpu_is_omap24xx())
  64                 irq = INT_24XX_DSP_MMU;
  65
  66         res = platform_get_resource_byname(&omap_dsp_device,
  67                                            IORESOURCE_IRQ, "dsp_mmu");
  68         res->start = irq;
  69
  70         platform_device_register(&omap_dsp_device);
  71 }
  72
  73 int dsp_kfunc_device_register(struct dsp_kfunc_device *kdev)
  74 {
  75         static DEFINE_MUTEX(dsp_pdata_lock);
  76
  77         spin_lock_init(&kdev->lock);
  78
  79         mutex_lock(&dsp_pdata_lock);
  80         list_add_tail(&kdev->entry, &dsp_pdata.kdev_list);
  81         mutex_unlock(&dsp_pdata_lock);
  82
  83         return 0;
  84 }
  85 EXPORT_SYMBOL(dsp_kfunc_device_register);
  86
  87 #else
  88 static inline void omap_init_dsp(void) { }
  89 #endif  /* CONFIG_OMAP_DSP */
  90
  91 /*-------------------------------------------------------------------------*/
  92 #if     defined(CONFIG_I2C_OMAP) || defined(CONFIG_I2C_OMAP_MODULE)
  93
  94 #define OMAP1_I2C_BASE          0xfffb3800
  95 #define OMAP2_I2C_BASE1         0x48070000
  96 #define OMAP_I2C_SIZE           0x3f
  97 #define OMAP1_I2C_INT           INT_I2C
  98 #define OMAP2_I2C_INT1          56
  99
 100 static struct resource i2c_resources1[] = {
 101         {
 102                 .start          = 0,
 103                 .end            = 0,
 104                 .flags          = IORESOURCE_MEM,
 105         },
 106         {
 107                 .start          = 0,
 108                 .flags          = IORESOURCE_IRQ,
 109         },
 110 };
 111
 112 /* DMA not used; works around erratum writing to non-empty i2c fifo */
 113
 114 static struct platform_device omap_i2c_device1 = {
 115         .name           = "i2c_omap",
 116         .id             = 1,
 117         .num_resources  = ARRAY_SIZE(i2c_resources1),
 118         .resource       = i2c_resources1,
 119 };
 120
 121 /* See also arch/arm/mach-omap2/devices.c for second I2C on 24xx */
 122 static void omap_init_i2c(void)
 123 {
 124         if (cpu_is_omap24xx()) {
 125                 i2c_resources1[0].start = OMAP2_I2C_BASE1;
 126                 i2c_resources1[0].end = OMAP2_I2C_BASE1 + OMAP_I2C_SIZE;
 127                 i2c_resources1[1].start = OMAP2_I2C_INT1;
 128         } else {
 129                 i2c_resources1[0].start = OMAP1_I2C_BASE;
 130                 i2c_resources1[0].end = OMAP1_I2C_BASE + OMAP_I2C_SIZE;
 131                 i2c_resources1[1].start = OMAP1_I2C_INT;
 132         }
 133
 134         /* FIXME define and use a boot tag, in case of boards that
 135          * either don't wire up I2C, or chips that mux it differently...
 136          * it can include clocking and address info, maybe more.
 137          */
 138         if (cpu_is_omap24xx()) {
 139                 if (machine_is_omap_h4()) {
 140                         omap_cfg_reg(M19_24XX_I2C1_SCL);
 141                         omap_cfg_reg(L15_24XX_I2C1_SDA);
 142                 }
 143         } else {
 144                 omap_cfg_reg(I2C_SCL);
 145                 omap_cfg_reg(I2C_SDA);
 146         }
 147
 148         (void) platform_device_register(&omap_i2c_device1);
 149 }
 150
 151 #else
 152 static inline void omap_init_i2c(void) {}
 153 #endif
 154
 155 /*-------------------------------------------------------------------------*/
 156 #if     defined(CONFIG_KEYBOARD_OMAP) || defined(CONFIG_KEYBOARD_OMAP_MODULE)
 157
 158 static void omap_init_kp(void)
 159 {
 160         /* REVISIT: 2430 keypad is on TWL4030 */
 161         if (cpu_is_omap2430())
 162                 return;
 163
 164         if (machine_is_omap_h2() || machine_is_omap_h3()) {
 165                 omap_cfg_reg(F18_1610_KBC0);
 166                 omap_cfg_reg(D20_1610_KBC1);
 167                 omap_cfg_reg(D19_1610_KBC2);
 168                 omap_cfg_reg(E18_1610_KBC3);
 169                 omap_cfg_reg(C21_1610_KBC4);
 170
 171                 omap_cfg_reg(G18_1610_KBR0);
 172                 omap_cfg_reg(F19_1610_KBR1);
 173                 omap_cfg_reg(H14_1610_KBR2);
 174                 omap_cfg_reg(E20_1610_KBR3);
 175                 omap_cfg_reg(E19_1610_KBR4);
 176                 omap_cfg_reg(N19_1610_KBR5);
 177         } else if (machine_is_omap_perseus2() || machine_is_omap_fsample()) {
 178                 omap_cfg_reg(E2_730_KBR0);
 179                 omap_cfg_reg(J7_730_KBR1);
 180                 omap_cfg_reg(E1_730_KBR2);
 181                 omap_cfg_reg(F3_730_KBR3);
 182                 omap_cfg_reg(D2_730_KBR4);
 183
 184                 omap_cfg_reg(C2_730_KBC0);
 185                 omap_cfg_reg(D3_730_KBC1);
 186                 omap_cfg_reg(E4_730_KBC2);
 187                 omap_cfg_reg(F4_730_KBC3);
 188                 omap_cfg_reg(E3_730_KBC4);
 189         } else if (machine_is_omap_h4()) {
 190                 omap_cfg_reg(T19_24XX_KBR0);
 191                 omap_cfg_reg(R19_24XX_KBR1);
 192                 omap_cfg_reg(V18_24XX_KBR2);
 193                 omap_cfg_reg(M21_24XX_KBR3);
 194                 omap_cfg_reg(E5__24XX_KBR4);
 195                 if (omap_has_menelaus()) {
 196                         omap_cfg_reg(B3__24XX_KBR5);
 197                         omap_cfg_reg(AA4_24XX_KBC2);
 198                         omap_cfg_reg(B13_24XX_KBC6);
 199                 } else {
 200                         omap_cfg_reg(M18_24XX_KBR5);
 201                         omap_cfg_reg(H19_24XX_KBC2);
 202                         omap_cfg_reg(N19_24XX_KBC6);
 203                 }
 204                 omap_cfg_reg(R20_24XX_KBC0);
 205                 omap_cfg_reg(M14_24XX_KBC1);
 206                 omap_cfg_reg(V17_24XX_KBC3);
 207                 omap_cfg_reg(P21_24XX_KBC4);
 208                 omap_cfg_reg(L14_24XX_KBC5);
 209         }
 210 }
 211 #else
 212 static inline void omap_init_kp(void) {}
 213 #endif
 214
 215 /*-------------------------------------------------------------------------*/
 216
 217 #if     defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
 218
 219 #ifdef CONFIG_ARCH_OMAP24XX
 220 #define OMAP_MMC1_BASE          0x4809c000
 221 #define OMAP_MMC1_INT           INT_24XX_MMC_IRQ
 222 #else
 223 #define OMAP_MMC1_BASE          0xfffb7800
 224 #define OMAP_MMC1_INT           INT_MMC
 225 #endif
 226 #define OMAP_MMC2_BASE          0xfffb7c00      /* omap16xx only */
 227
 228 static struct omap_mmc_conf mmc1_conf;
 229
 230 static u64 mmc1_dmamask = 0xffffffff;
 231
 232 static struct resource mmc1_resources[] = {
 233         {
 234                 .start          = OMAP_MMC1_BASE,
 235                 .end            = OMAP_MMC1_BASE + 0x7f,
 236                 .flags          = IORESOURCE_MEM,
 237         },
 238         {
 239                 .start          = OMAP_MMC1_INT,
 240                 .flags          = IORESOURCE_IRQ,
 241         },
 242 };
 243
 244 static struct platform_device mmc_omap_device1 = {
 245         .name           = "mmci-omap",
 246         .id             = 1,
 247         .dev = {
 248                 .dma_mask       = &mmc1_dmamask,
 249                 .platform_data  = &mmc1_conf,
 250         },
 251         .num_resources  = ARRAY_SIZE(mmc1_resources),
 252         .resource       = mmc1_resources,
 253 };
 254
 255 #ifdef  CONFIG_ARCH_OMAP16XX
 256
 257 static struct omap_mmc_conf mmc2_conf;
 258
 259 static u64 mmc2_dmamask = 0xffffffff;
 260
 261 static struct resource mmc2_resources[] = {
 262         {
 263                 .start          = OMAP_MMC2_BASE,
 264                 .end            = OMAP_MMC2_BASE + 0x7f,
 265                 .flags          = IORESOURCE_MEM,
 266         },
 267         {
 268                 .start          = INT_1610_MMC2,
 269                 .flags          = IORESOURCE_IRQ,
 270         },
 271 };
 272
 273 static struct platform_device mmc_omap_device2 = {
 274         .name           = "mmci-omap",
 275         .id             = 2,
 276         .dev = {
 277                 .dma_mask       = &mmc2_dmamask,
 278                 .platform_data  = &mmc2_conf,
 279         },
 280         .num_resources  = ARRAY_SIZE(mmc2_resources),
 281         .resource       = mmc2_resources,
 282 };
 283 #endif
 284
 285 static void __init omap_init_mmc(void)
 286 {
 287         const struct omap_mmc_config    *mmc_conf;
 288         const struct omap_mmc_conf      *mmc;
 289
 290         /* REVISIT: 2430 has HS MMC */
 291         if (cpu_is_omap2430())
 292                 return;
 293
 294         /* NOTE:  assumes MMC was never (wrongly) enabled */
 295         mmc_conf = omap_get_config(OMAP_TAG_MMC, struct omap_mmc_config);
 296         if (!mmc_conf)
 297                 return;
 298
 299         /* block 1 is always available and has just one pinout option */
 300         mmc = &mmc_conf->mmc[0];
 301         if (mmc->enabled) {
 302                 if (cpu_is_omap24xx()) {
 303                         omap_cfg_reg(H18_24XX_MMC_CMD);
 304                         omap_cfg_reg(H15_24XX_MMC_CLKI);
 305                         omap_cfg_reg(G19_24XX_MMC_CLKO);
 306                         omap_cfg_reg(F20_24XX_MMC_DAT0);
 307                         omap_cfg_reg(F19_24XX_MMC_DAT_DIR0);
 308                         omap_cfg_reg(G18_24XX_MMC_CMD_DIR);
 309                 } else {
 310                         omap_cfg_reg(MMC_CMD);
 311                         omap_cfg_reg(MMC_CLK);
 312                         omap_cfg_reg(MMC_DAT0);
 313                         if (cpu_is_omap1710()) {
 314                                 omap_cfg_reg(M15_1710_MMC_CLKI);
 315                                 omap_cfg_reg(P19_1710_MMC_CMDDIR);
 316                                 omap_cfg_reg(P20_1710_MMC_DATDIR0);
 317                         }
 318                 }
 319                 if (mmc->wire4) {
 320                         if (cpu_is_omap24xx()) {
 321                                 omap_cfg_reg(H14_24XX_MMC_DAT1);
 322                                 omap_cfg_reg(E19_24XX_MMC_DAT2);
 323                                 omap_cfg_reg(D19_24XX_MMC_DAT3);
 324                                 omap_cfg_reg(E20_24XX_MMC_DAT_DIR1);
 325                                 omap_cfg_reg(F18_24XX_MMC_DAT_DIR2);
 326                                 omap_cfg_reg(E18_24XX_MMC_DAT_DIR3);
 327                         } else {
 328                                 omap_cfg_reg(MMC_DAT1);
 329                                 /* NOTE:  DAT2 can be on W10 (here) or M15 */
 330                                 if (!mmc->nomux)
 331                                         omap_cfg_reg(MMC_DAT2);
 332                                 omap_cfg_reg(MMC_DAT3);
 333                         }
 334                 }
 335                 mmc1_conf = *mmc;
 336                 (void) platform_device_register(&mmc_omap_device1);
 337         }
 338
 339 #ifdef  CONFIG_ARCH_OMAP16XX
 340         /* block 2 is on newer chips, and has many pinout options */
 341         mmc = &mmc_conf->mmc[1];
 342         if (mmc->enabled) {
 343                 if (!mmc->nomux) {
 344                         omap_cfg_reg(Y8_1610_MMC2_CMD);
 345                         omap_cfg_reg(Y10_1610_MMC2_CLK);
 346                         omap_cfg_reg(R18_1610_MMC2_CLKIN);
 347                         omap_cfg_reg(W8_1610_MMC2_DAT0);
 348                         if (mmc->wire4) {
 349                                 omap_cfg_reg(V8_1610_MMC2_DAT1);
 350                                 omap_cfg_reg(W15_1610_MMC2_DAT2);
 351                                 omap_cfg_reg(R10_1610_MMC2_DAT3);
 352                         }
 353
 354                         /* These are needed for the level shifter */
 355                         omap_cfg_reg(V9_1610_MMC2_CMDDIR);
 356                         omap_cfg_reg(V5_1610_MMC2_DATDIR0);
 357                         omap_cfg_reg(W19_1610_MMC2_DATDIR1);
 358                 }
 359
 360                 /* Feedback clock must be set on OMAP-1710 MMC2 */
 361                 if (cpu_is_omap1710())
 362                         omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
 363                                      MOD_CONF_CTRL_1);
 364                 mmc2_conf = *mmc;
 365                 (void) platform_device_register(&mmc_omap_device2);
 366         }
 367 #endif
 368         return;
 369 }
 370 #else
 371 static inline void omap_init_mmc(void) {}
 372 #endif
 373
 374 /*-------------------------------------------------------------------------*/
 375
 376 /* Numbering for the SPI-capable controllers when used for SPI:
 377  * spi          = 1
 378  * uwire        = 2
 379  * mmc1..2      = 3..4
 380  * mcbsp1..3    = 5..7
 381  */
 382
 383 #if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE)
 384
 385 #define OMAP_UWIRE_BASE         0xfffb3000
 386
 387 static struct resource uwire_resources[] = {
 388         {
 389                 .start          = OMAP_UWIRE_BASE,
 390                 .end            = OMAP_UWIRE_BASE + 0x20,
 391                 .flags          = IORESOURCE_MEM,
 392         },
 393 };
 394
 395 static struct platform_device omap_uwire_device = {
 396         .name      = "omap_uwire",
 397         .id          = -1,
 398         .num_resources  = ARRAY_SIZE(uwire_resources),
 399         .resource       = uwire_resources,
 400 };
 401
 402 static void omap_init_uwire(void)
 403 {
 404         /* FIXME define and use a boot tag; not all boards will be hooking
 405          * up devices to the microwire controller, and multi-board configs
 406          * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
 407          */
 408
 409         /* board-specific code must configure chipselects (only a few
 410          * are normally used) and SCLK/SDI/SDO (each has two choices).
 411          */
 412         (void) platform_device_register(&omap_uwire_device);
 413 }
 414 #else
 415 static inline void omap_init_uwire(void) {}
 416 #endif
 417
 418 /*-------------------------------------------------------------------------*/
 419
 420 #if     defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
 421
 422 #ifdef CONFIG_ARCH_OMAP24XX
 423 #define OMAP_WDT_BASE           0x48022000
 424 #else
 425 #define OMAP_WDT_BASE           0xfffeb000
 426 #endif
 427
 428 static struct resource wdt_resources[] = {
 429         {
 430                 .start          = OMAP_WDT_BASE,
 431                 .end            = OMAP_WDT_BASE + 0x4f,
 432                 .flags          = IORESOURCE_MEM,
 433         },
 434 };
 435
 436 static struct platform_device omap_wdt_device = {
 437         .name      = "omap_wdt",
 438         .id          = -1,
 439         .num_resources  = ARRAY_SIZE(wdt_resources),
 440         .resource       = wdt_resources,
 441 };
 442
 443 static void omap_init_wdt(void)
 444 {
 445         (void) platform_device_register(&omap_wdt_device);
 446 }
 447 #else
 448 static inline void omap_init_wdt(void) {}
 449 #endif
 450
 451 /*-------------------------------------------------------------------------*/
 452
 453 #if defined(CONFIG_HW_RANDOM_OMAP) || defined(CONFIG_HW_RANDOM_OMAP_MODULE)
 454
 455 #ifdef CONFIG_ARCH_OMAP24XX
 456 #define OMAP_RNG_BASE           0x480A0000
 457 #else
 458 #define OMAP_RNG_BASE           0xfffe5000
 459 #endif
 460
 461 static struct resource rng_resources[] = {
 462         {
 463                 .start          = OMAP_RNG_BASE,
 464                 .end            = OMAP_RNG_BASE + 0x4f,
 465                 .flags          = IORESOURCE_MEM,
 466         },
 467 };
 468
 469 static struct platform_device omap_rng_device = {
 470         .name      = "omap_rng",
 471         .id          = -1,
 472         .num_resources  = ARRAY_SIZE(rng_resources),
 473         .resource       = rng_resources,
 474 };
 475
 476 static void omap_init_rng(void)
 477 {
 478         (void) platform_device_register(&omap_rng_device);
 479 }
 480 #else
 481 static inline void omap_init_rng(void) {}
 482 #endif
 483
 484 /*
 485  * This gets called after board-specific INIT_MACHINE, and initializes most
 486  * on-chip peripherals accessible on this board (except for few like USB):
 487  *
 488  *  (a) Does any "standard config" pin muxing needed.  Board-specific
 489  *      code will have muxed GPIO pins and done "nonstandard" setup;
 490  *      that code could live in the boot loader.
 491  *  (b) Populating board-specific platform_data with the data drivers
 492  *      rely on to handle wiring variations.
 493  *  (c) Creating platform devices as meaningful on this board and
 494  *      with this kernel configuration.
 495  *
 496  * Claiming GPIOs, and setting their direction and initial values, is the
 497  * responsibility of the device drivers.  So is responding to probe().
 498  *
 499  * Board-specific knowlege like creating devices or pin setup is to be
 500  * kept out of drivers as much as possible.  In particular, pin setup
 501  * may be handled by the boot loader, and drivers should expect it will
 502  * normally have been done by the time they're probed.
 503  */
 504 static int __init omap_init_devices(void)
 505 {
 506         /* please keep these calls, and their implementations above,
 507          * in alphabetical order so they're easier to sort through.
 508          */
 509         omap_init_dsp();
 510         omap_init_kp();
 511         omap_init_mmc();
 512         omap_init_uwire();
 513         omap_init_wdt();
 514         omap_init_rng();
 515         omap_init_i2c();
 516         return 0;
 517 }
 518 arch_initcall(omap_init_devices);