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_ARCH_OMAP243X)
  93 #if     defined(CONFIG_I2C_OMAP) || defined(CONFIG_I2C_OMAP_MODULE)
  94
  95 #define OMAP1_I2C_BASE          0xfffb3800
  96 #define OMAP2_I2C_BASE1         0x48070000
  97 #define OMAP_I2C_SIZE           0x3f
  98 #define OMAP1_I2C_INT           INT_I2C
  99 #define OMAP2_I2C_INT1          56
 100
 101 static u32 omap2_i2c1_clkrate   = 100;
 102
 103 static struct resource i2c_resources1[] = {
 104         {
 105                 .start          = 0,
 106                 .end            = 0,
 107                 .flags          = IORESOURCE_MEM,
 108         },
 109         {
 110                 .start          = 0,
 111                 .flags          = IORESOURCE_IRQ,
 112         },
 113 };
 114
 115 /* DMA not used; works around erratum writing to non-empty i2c fifo */
 116
 117 static struct platform_device omap_i2c_device1 = {
 118         .name           = "i2c_omap",
 119         .id             = 1,
 120         .num_resources  = ARRAY_SIZE(i2c_resources1),
 121         .resource       = i2c_resources1,
 122         .dev            = {
 123                 .platform_data  = &omap2_i2c1_clkrate,
 124         },
 125 };
 126
 127 /* See also arch/arm/mach-omap2/devices.c for second I2C on 24xx */
 128 static void omap_init_i2c(void)
 129 {
 130         if (cpu_is_omap242x()) {
 131                 i2c_resources1[0].start = OMAP2_I2C_BASE1;
 132                 i2c_resources1[0].end = OMAP2_I2C_BASE1 + OMAP_I2C_SIZE;
 133                 i2c_resources1[1].start = OMAP2_I2C_INT1;
 134         } else {
 135                 i2c_resources1[0].start = OMAP1_I2C_BASE;
 136                 i2c_resources1[0].end = OMAP1_I2C_BASE + OMAP_I2C_SIZE;
 137                 i2c_resources1[1].start = OMAP1_I2C_INT;
 138         }
 139
 140         /* FIXME define and use a boot tag, in case of boards that
 141          * either don't wire up I2C, or chips that mux it differently...
 142          * it can include clocking and address info, maybe more.
 143          */
 144         if (cpu_class_is_omap2()) {
 145                 if (machine_is_omap_h4()) {
 146                         omap_cfg_reg(M19_24XX_I2C1_SCL);
 147                         omap_cfg_reg(L15_24XX_I2C1_SDA);
 148                 }
 149         } else {
 150                 omap_cfg_reg(I2C_SCL);
 151                 omap_cfg_reg(I2C_SDA);
 152         }
 153
 154         (void) platform_device_register(&omap_i2c_device1);
 155 }
 156
 157 #else
 158 static inline void omap_init_i2c(void) {}
 159 #endif
 160 #endif
 161 /*-------------------------------------------------------------------------*/
 162 #if     defined(CONFIG_KEYBOARD_OMAP) || defined(CONFIG_KEYBOARD_OMAP_MODULE)
 163
 164 static void omap_init_kp(void)
 165 {
 166         /* REVISIT: 2430 keypad is on TWL4030 */
 167         if (cpu_is_omap2430() || cpu_is_omap34xx())
 168                 return;
 169
 170         if (machine_is_omap_h2() || machine_is_omap_h3()) {
 171                 omap_cfg_reg(F18_1610_KBC0);
 172                 omap_cfg_reg(D20_1610_KBC1);
 173                 omap_cfg_reg(D19_1610_KBC2);
 174                 omap_cfg_reg(E18_1610_KBC3);
 175                 omap_cfg_reg(C21_1610_KBC4);
 176
 177                 omap_cfg_reg(G18_1610_KBR0);
 178                 omap_cfg_reg(F19_1610_KBR1);
 179                 omap_cfg_reg(H14_1610_KBR2);
 180                 omap_cfg_reg(E20_1610_KBR3);
 181                 omap_cfg_reg(E19_1610_KBR4);
 182                 omap_cfg_reg(N19_1610_KBR5);
 183         } else if (machine_is_omap_perseus2() || machine_is_omap_fsample()) {
 184                 omap_cfg_reg(E2_730_KBR0);
 185                 omap_cfg_reg(J7_730_KBR1);
 186                 omap_cfg_reg(E1_730_KBR2);
 187                 omap_cfg_reg(F3_730_KBR3);
 188                 omap_cfg_reg(D2_730_KBR4);
 189
 190                 omap_cfg_reg(C2_730_KBC0);
 191                 omap_cfg_reg(D3_730_KBC1);
 192                 omap_cfg_reg(E4_730_KBC2);
 193                 omap_cfg_reg(F4_730_KBC3);
 194                 omap_cfg_reg(E3_730_KBC4);
 195         } else if (machine_is_omap_h4()) {
 196                 omap_cfg_reg(T19_24XX_KBR0);
 197                 omap_cfg_reg(R19_24XX_KBR1);
 198                 omap_cfg_reg(V18_24XX_KBR2);
 199                 omap_cfg_reg(M21_24XX_KBR3);
 200                 omap_cfg_reg(E5__24XX_KBR4);
 201                 if (omap_has_menelaus()) {
 202                         omap_cfg_reg(B3__24XX_KBR5);
 203                         omap_cfg_reg(AA4_24XX_KBC2);
 204                         omap_cfg_reg(B13_24XX_KBC6);
 205                 } else {
 206                         omap_cfg_reg(M18_24XX_KBR5);
 207                         omap_cfg_reg(H19_24XX_KBC2);
 208                         omap_cfg_reg(N19_24XX_KBC6);
 209                 }
 210                 omap_cfg_reg(R20_24XX_KBC0);
 211                 omap_cfg_reg(M14_24XX_KBC1);
 212                 omap_cfg_reg(V17_24XX_KBC3);
 213                 omap_cfg_reg(P21_24XX_KBC4);
 214                 omap_cfg_reg(L14_24XX_KBC5);
 215         }
 216 }
 217 #else
 218 static inline void omap_init_kp(void) {}
 219 #endif
 220
 221 /*-------------------------------------------------------------------------*/
 222
 223 #if     defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
 224
 225 #ifdef CONFIG_ARCH_OMAP24XX
 226 #define OMAP_MMC1_BASE          0x4809c000
 227 #define OMAP_MMC1_INT           INT_24XX_MMC_IRQ
 228 #else
 229 #define OMAP_MMC1_BASE          0xfffb7800
 230 #define OMAP_MMC1_INT           INT_MMC
 231 #endif
 232 #define OMAP_MMC2_BASE          0xfffb7c00      /* omap16xx only */
 233
 234 static struct omap_mmc_conf mmc1_conf;
 235
 236 static u64 mmc1_dmamask = 0xffffffff;
 237
 238 static struct resource mmc1_resources[] = {
 239         {
 240                 .start          = OMAP_MMC1_BASE,
 241                 .end            = OMAP_MMC1_BASE + 0x7f,
 242                 .flags          = IORESOURCE_MEM,
 243         },
 244         {
 245                 .start          = OMAP_MMC1_INT,
 246                 .flags          = IORESOURCE_IRQ,
 247         },
 248 };
 249
 250 static struct platform_device mmc_omap_device1 = {
 251         .name           = "mmci-omap",
 252         .id             = 1,
 253         .dev = {
 254                 .dma_mask       = &mmc1_dmamask,
 255                 .platform_data  = &mmc1_conf,
 256         },
 257         .num_resources  = ARRAY_SIZE(mmc1_resources),
 258         .resource       = mmc1_resources,
 259 };
 260
 261 #ifdef  CONFIG_ARCH_OMAP16XX
 262
 263 static struct omap_mmc_conf mmc2_conf;
 264
 265 static u64 mmc2_dmamask = 0xffffffff;
 266
 267
 268 static struct resource mmc2_resources[] = {
 269         {
 270                 .start          = OMAP_MMC2_BASE,
 271                 .end            = OMAP_MMC2_BASE + 0x7f,
 272                 .flags          = IORESOURCE_MEM,
 273         },
 274         {
 275                 .start          = INT_1610_MMC2,
 276                 .flags          = IORESOURCE_IRQ,
 277         },
 278 };
 279
 280 static struct platform_device mmc_omap_device2 = {
 281         .name           = "mmci-omap",
 282         .id             = 2,
 283         .dev = {
 284                 .dma_mask       = &mmc2_dmamask,
 285                 .platform_data  = &mmc2_conf,
 286         },
 287         .num_resources  = ARRAY_SIZE(mmc2_resources),
 288         .resource       = mmc2_resources,
 289 };
 290 #endif
 291
 292 static void __init omap_init_mmc(void)
 293 {
 294         const struct omap_mmc_config    *mmc_conf;
 295         const struct omap_mmc_conf      *mmc;
 296
 297         /* REVISIT: 2430 has HS MMC */
 298         if (cpu_is_omap2430() || cpu_is_omap34xx())
 299                 return;
 300
 301         /* NOTE:  assumes MMC was never (wrongly) enabled */
 302         mmc_conf = omap_get_config(OMAP_TAG_MMC, struct omap_mmc_config);
 303         if (!mmc_conf)
 304                 return;
 305
 306         /* block 1 is always available and has just one pinout option */
 307         mmc = &mmc_conf->mmc[0];
 308         if (mmc->enabled) {
 309                 if (cpu_is_omap24xx()) {
 310                         omap_cfg_reg(H18_24XX_MMC_CMD);
 311                         omap_cfg_reg(H15_24XX_MMC_CLKI);
 312                         omap_cfg_reg(G19_24XX_MMC_CLKO);
 313                         omap_cfg_reg(F20_24XX_MMC_DAT0);
 314                         omap_cfg_reg(F19_24XX_MMC_DAT_DIR0);
 315                         omap_cfg_reg(G18_24XX_MMC_CMD_DIR);
 316                 } else {
 317                         omap_cfg_reg(MMC_CMD);
 318                         omap_cfg_reg(MMC_CLK);
 319                         omap_cfg_reg(MMC_DAT0);
 320                         if (cpu_is_omap1710()) {
 321                                 omap_cfg_reg(M15_1710_MMC_CLKI);
 322                                 omap_cfg_reg(P19_1710_MMC_CMDDIR);
 323                                 omap_cfg_reg(P20_1710_MMC_DATDIR0);
 324                         }
 325                 }
 326                 if (mmc->wire4) {
 327                         if (cpu_is_omap24xx()) {
 328                                 omap_cfg_reg(H14_24XX_MMC_DAT1);
 329                                 omap_cfg_reg(E19_24XX_MMC_DAT2);
 330                                 omap_cfg_reg(D19_24XX_MMC_DAT3);
 331                                 omap_cfg_reg(E20_24XX_MMC_DAT_DIR1);
 332                                 omap_cfg_reg(F18_24XX_MMC_DAT_DIR2);
 333                                 omap_cfg_reg(E18_24XX_MMC_DAT_DIR3);
 334                         } else {
 335                                 omap_cfg_reg(MMC_DAT1);
 336                                 /* NOTE:  DAT2 can be on W10 (here) or M15 */
 337                                 if (!mmc->nomux)
 338                                         omap_cfg_reg(MMC_DAT2);
 339                                 omap_cfg_reg(MMC_DAT3);
 340                         }
 341                 }
 342                 if (mmc->internal_clock) {
 343                         /*
 344                          * Use internal loop-back in MMC/SDIO
 345                          * Module Input Clock selection
 346                          */
 347                         if (cpu_is_omap24xx()) {
 348                                 u32 v = omap_readl(OMAP2_CONTROL_DEVCONF);
 349                                 v |= (1 << 24);
 350                                 omap_writel(v, OMAP2_CONTROL_DEVCONF);
 351                         }
 352                 }
 353                 mmc1_conf = *mmc;
 354                 (void) platform_device_register(&mmc_omap_device1);
 355         }
 356
 357 #ifdef  CONFIG_ARCH_OMAP16XX
 358         /* block 2 is on newer chips, and has many pinout options */
 359         mmc = &mmc_conf->mmc[1];
 360         if (mmc->enabled) {
 361                 if (!mmc->nomux) {
 362                         omap_cfg_reg(Y8_1610_MMC2_CMD);
 363                         omap_cfg_reg(Y10_1610_MMC2_CLK);
 364                         omap_cfg_reg(R18_1610_MMC2_CLKIN);
 365                         omap_cfg_reg(W8_1610_MMC2_DAT0);
 366                         if (mmc->wire4) {
 367                                 omap_cfg_reg(V8_1610_MMC2_DAT1);
 368                                 omap_cfg_reg(W15_1610_MMC2_DAT2);
 369                                 omap_cfg_reg(R10_1610_MMC2_DAT3);
 370                         }
 371
 372                         /* These are needed for the level shifter */
 373                         omap_cfg_reg(V9_1610_MMC2_CMDDIR);
 374                         omap_cfg_reg(V5_1610_MMC2_DATDIR0);
 375                         omap_cfg_reg(W19_1610_MMC2_DATDIR1);
 376                 }
 377
 378                 /* Feedback clock must be set on OMAP-1710 MMC2 */
 379                 if (cpu_is_omap1710())
 380                         omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
 381                                      MOD_CONF_CTRL_1);
 382                 mmc2_conf = *mmc;
 383                 (void) platform_device_register(&mmc_omap_device2);
 384         }
 385 #endif
 386         return;
 387 }
 388 #else
 389 static inline void omap_init_mmc(void) {}
 390 #endif
 391
 392 /*-------------------------------------------------------------------------*/
 393
 394 /* Numbering for the SPI-capable controllers when used for SPI:
 395  * spi          = 1
 396  * uwire        = 2
 397  * mmc1..2      = 3..4
 398  * mcbsp1..3    = 5..7
 399  */
 400
 401 #if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE)
 402
 403 #define OMAP_UWIRE_BASE         0xfffb3000
 404
 405 static struct resource uwire_resources[] = {
 406         {
 407                 .start          = OMAP_UWIRE_BASE,
 408                 .end            = OMAP_UWIRE_BASE + 0x20,
 409                 .flags          = IORESOURCE_MEM,
 410         },
 411 };
 412
 413 static struct platform_device omap_uwire_device = {
 414         .name      = "omap_uwire",
 415         .id          = -1,
 416         .num_resources  = ARRAY_SIZE(uwire_resources),
 417         .resource       = uwire_resources,
 418 };
 419
 420 static void omap_init_uwire(void)
 421 {
 422         /* FIXME define and use a boot tag; not all boards will be hooking
 423          * up devices to the microwire controller, and multi-board configs
 424          * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
 425          */
 426
 427         /* board-specific code must configure chipselects (only a few
 428          * are normally used) and SCLK/SDI/SDO (each has two choices).
 429          */
 430         (void) platform_device_register(&omap_uwire_device);
 431 }
 432 #else
 433 static inline void omap_init_uwire(void) {}
 434 #endif
 435
 436 /*-------------------------------------------------------------------------*/
 437
 438 #if     defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
 439
 440 #ifdef CONFIG_ARCH_OMAP24XX
 441
 442 #ifdef CONFIG_ARCH_OMAP2430
 443 /* WDT2 */
 444 #define OMAP_WDT_BASE           0x49016000
 445 #else
 446 #define OMAP_WDT_BASE           0x48022000
 447 #endif
 448
 449 #else
 450 #define OMAP_WDT_BASE           0xfffeb000
 451 #endif
 452
 453 static struct resource wdt_resources[] = {
 454         {
 455                 .start          = OMAP_WDT_BASE,
 456                 .end            = OMAP_WDT_BASE + 0x4f,
 457                 .flags          = IORESOURCE_MEM,
 458         },
 459 };
 460
 461 static struct platform_device omap_wdt_device = {
 462         .name      = "omap_wdt",
 463         .id          = -1,
 464         .num_resources  = ARRAY_SIZE(wdt_resources),
 465         .resource       = wdt_resources,
 466 };
 467
 468 static void omap_init_wdt(void)
 469 {
 470         (void) platform_device_register(&omap_wdt_device);
 471 }
 472 #else
 473 static inline void omap_init_wdt(void) {}
 474 #endif
 475
 476 /*-------------------------------------------------------------------------*/
 477
 478 #if defined(CONFIG_HW_RANDOM_OMAP) || defined(CONFIG_HW_RANDOM_OMAP_MODULE)
 479
 480 #ifdef CONFIG_ARCH_OMAP24XX
 481 #define OMAP_RNG_BASE           0x480A0000
 482 #else
 483 #define OMAP_RNG_BASE           0xfffe5000
 484 #endif
 485
 486 static struct resource rng_resources[] = {
 487         {
 488                 .start          = OMAP_RNG_BASE,
 489                 .end            = OMAP_RNG_BASE + 0x4f,
 490                 .flags          = IORESOURCE_MEM,
 491         },
 492 };
 493
 494 static struct platform_device omap_rng_device = {
 495         .name      = "omap_rng",
 496         .id          = -1,
 497         .num_resources  = ARRAY_SIZE(rng_resources),
 498         .resource       = rng_resources,
 499 };
 500
 501 static void omap_init_rng(void)
 502 {
 503         (void) platform_device_register(&omap_rng_device);
 504 }
 505 #else
 506 static inline void omap_init_rng(void) {}
 507 #endif
 508
 509 /*
 510  * This gets called after board-specific INIT_MACHINE, and initializes most
 511  * on-chip peripherals accessible on this board (except for few like USB):
 512  *
 513  *  (a) Does any "standard config" pin muxing needed.  Board-specific
 514  *      code will have muxed GPIO pins and done "nonstandard" setup;
 515  *      that code could live in the boot loader.
 516  *  (b) Populating board-specific platform_data with the data drivers
 517  *      rely on to handle wiring variations.
 518  *  (c) Creating platform devices as meaningful on this board and
 519  *      with this kernel configuration.
 520  *
 521  * Claiming GPIOs, and setting their direction and initial values, is the
 522  * responsibility of the device drivers.  So is responding to probe().
 523  *
 524  * Board-specific knowlege like creating devices or pin setup is to be
 525  * kept out of drivers as much as possible.  In particular, pin setup
 526  * may be handled by the boot loader, and drivers should expect it will
 527  * normally have been done by the time they're probed.
 528  */
 529 static int __init omap_init_devices(void)
 530 {
 531         /* please keep these calls, and their implementations above,
 532          * in alphabetical order so they're easier to sort through.
 533          */
 534         omap_init_dsp();
 535         omap_init_kp();
 536         omap_init_mmc();
 537         omap_init_uwire();
 538         omap_init_wdt();
 539         omap_init_rng();
 540         if (!cpu_is_omap2430() && !cpu_is_omap34xx()) {
 541                 omap_init_i2c();
 542         }
 543         return 0;
 544 }
 545 arch_initcall(omap_init_devices);