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/control.h>
  24 #include <asm/arch/board.h>
  25 #include <asm/arch/mmc.h>
  26 #include <asm/arch/mux.h>
  27 #include <asm/arch/gpio.h>
  28 #include <asm/arch/menelaus.h>
  29 #include <asm/arch/dsp_common.h>
  30 #include <asm/arch/mcbsp.h>
  31
  32 #if     defined(CONFIG_OMAP_DSP) || defined(CONFIG_OMAP_DSP_MODULE)
  33
  34 static struct dsp_platform_data dsp_pdata = {
  35         .kdev_list = LIST_HEAD_INIT(dsp_pdata.kdev_list),
  36 };
  37
  38 static struct resource omap_dsp_resources[] = {
  39         {
  40                 .name   = "dsp_mmu",
  41                 .start  = -1,
  42                 .flags  = IORESOURCE_IRQ,
  43         },
  44 };
  45
  46 static struct platform_device omap_dsp_device = {
  47         .name           = "dsp",
  48         .id             = -1,
  49         .num_resources  = ARRAY_SIZE(omap_dsp_resources),
  50         .resource       = omap_dsp_resources,
  51         .dev = {
  52                 .platform_data = &dsp_pdata,
  53         },
  54 };
  55
  56 static inline void omap_init_dsp(void)
  57 {
  58         struct resource *res;
  59         int irq;
  60
  61         if (cpu_is_omap15xx())
  62                 irq = INT_1510_DSP_MMU;
  63         else if (cpu_is_omap16xx())
  64                 irq = INT_1610_DSP_MMU;
  65         else if (cpu_is_omap24xx())
  66                 irq = INT_24XX_DSP_MMU;
  67
  68         res = platform_get_resource_byname(&omap_dsp_device,
  69                                            IORESOURCE_IRQ, "dsp_mmu");
  70         res->start = irq;
  71
  72         platform_device_register(&omap_dsp_device);
  73 }
  74
  75 int dsp_kfunc_device_register(struct dsp_kfunc_device *kdev)
  76 {
  77         static DEFINE_MUTEX(dsp_pdata_lock);
  78
  79         spin_lock_init(&kdev->lock);
  80
  81         mutex_lock(&dsp_pdata_lock);
  82         list_add_tail(&kdev->entry, &dsp_pdata.kdev_list);
  83         mutex_unlock(&dsp_pdata_lock);
  84
  85         return 0;
  86 }
  87 EXPORT_SYMBOL(dsp_kfunc_device_register);
  88
  89 #else
  90 static inline void omap_init_dsp(void) { }
  91 #endif  /* CONFIG_OMAP_DSP */
  92
  93 /*-------------------------------------------------------------------------*/
  94 #if     defined(CONFIG_KEYBOARD_OMAP) || defined(CONFIG_KEYBOARD_OMAP_MODULE)
  95
  96 static void omap_init_kp(void)
  97 {
  98         /* REVISIT: 2430 keypad is on TWL4030 */
  99         if (cpu_is_omap2430() || cpu_is_omap34xx())
 100                 return;
 101
 102         if (machine_is_omap_h2() || machine_is_omap_h3()) {
 103                 omap_cfg_reg(F18_1610_KBC0);
 104                 omap_cfg_reg(D20_1610_KBC1);
 105                 omap_cfg_reg(D19_1610_KBC2);
 106                 omap_cfg_reg(E18_1610_KBC3);
 107                 omap_cfg_reg(C21_1610_KBC4);
 108
 109                 omap_cfg_reg(G18_1610_KBR0);
 110                 omap_cfg_reg(F19_1610_KBR1);
 111                 omap_cfg_reg(H14_1610_KBR2);
 112                 omap_cfg_reg(E20_1610_KBR3);
 113                 omap_cfg_reg(E19_1610_KBR4);
 114                 omap_cfg_reg(N19_1610_KBR5);
 115         } else if (machine_is_omap_perseus2() || machine_is_omap_fsample()) {
 116                 omap_cfg_reg(E2_730_KBR0);
 117                 omap_cfg_reg(J7_730_KBR1);
 118                 omap_cfg_reg(E1_730_KBR2);
 119                 omap_cfg_reg(F3_730_KBR3);
 120                 omap_cfg_reg(D2_730_KBR4);
 121
 122                 omap_cfg_reg(C2_730_KBC0);
 123                 omap_cfg_reg(D3_730_KBC1);
 124                 omap_cfg_reg(E4_730_KBC2);
 125                 omap_cfg_reg(F4_730_KBC3);
 126                 omap_cfg_reg(E3_730_KBC4);
 127         } else if (machine_is_omap_h4()) {
 128                 omap_cfg_reg(T19_24XX_KBR0);
 129                 omap_cfg_reg(R19_24XX_KBR1);
 130                 omap_cfg_reg(V18_24XX_KBR2);
 131                 omap_cfg_reg(M21_24XX_KBR3);
 132                 omap_cfg_reg(E5__24XX_KBR4);
 133                 if (omap_has_menelaus()) {
 134                         omap_cfg_reg(B3__24XX_KBR5);
 135                         omap_cfg_reg(AA4_24XX_KBC2);
 136                         omap_cfg_reg(B13_24XX_KBC6);
 137                 } else {
 138                         omap_cfg_reg(M18_24XX_KBR5);
 139                         omap_cfg_reg(H19_24XX_KBC2);
 140                         omap_cfg_reg(N19_24XX_KBC6);
 141                 }
 142                 omap_cfg_reg(R20_24XX_KBC0);
 143                 omap_cfg_reg(M14_24XX_KBC1);
 144                 omap_cfg_reg(V17_24XX_KBC3);
 145                 omap_cfg_reg(P21_24XX_KBC4);
 146                 omap_cfg_reg(L14_24XX_KBC5);
 147         }
 148 }
 149 #else
 150 static inline void omap_init_kp(void) {}
 151 #endif
 152
 153 /*-------------------------------------------------------------------------*/
 154 #if defined(CONFIG_OMAP_MCBSP) || defined(CONFIG_OMAP_MCBSP_MODULE)
 155
 156 static struct platform_device omap_mcbsp_devices[OMAP_MAX_MCBSP_COUNT];
 157 static int mcbsps_configured;
 158
 159 void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
 160                                         int size)
 161 {
 162         int i;
 163
 164         if (size > OMAP_MAX_MCBSP_COUNT) {
 165                 printk(KERN_WARNING "Registered too many McBSPs platform_data."
 166                         " Using maximum (%d) available.\n",
 167                         OMAP_MAX_MCBSP_COUNT);
 168                 size = OMAP_MAX_MCBSP_COUNT;
 169         }
 170
 171         for (i = 0; i < size; i++) {
 172                 struct platform_device *new_mcbsp = &omap_mcbsp_devices[i];
 173                 new_mcbsp->name = "omap-mcbsp";
 174                 new_mcbsp->id = i + 1;
 175                 new_mcbsp->dev.platform_data = &config[i];
 176         }
 177         mcbsps_configured = size;
 178 }
 179
 180 static void __init omap_init_mcbsp(void)
 181 {
 182         int i;
 183
 184         for (i = 0; i < mcbsps_configured; i++)
 185                 platform_device_register(&omap_mcbsp_devices[i]);
 186 }
 187 #else
 188 void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
 189                                         int size)
 190 {  }
 191
 192 static inline void __init omap_init_mcbsp(void)
 193 {  }
 194 #endif
 195
 196 /*-------------------------------------------------------------------------*/
 197
 198 #if     defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE) \
 199         || defined(CONFIG_MMC_OMAP_HS) || defined(CONFIG_MMC_OMAP_HS_MODULE)
 200
 201 #if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
 202 #define OMAP_MMC1_BASE          0x4809c000
 203 #define OMAP_MMC1_END           OMAP_MMC1_BASE + 0x1fc
 204 #define OMAP_MMC1_INT           INT_24XX_MMC_IRQ
 205
 206 #define OMAP_MMC2_BASE          0x480b4000
 207 #define OMAP_MMC2_END           OMAP_MMC2_BASE + 0x1fc
 208 #define OMAP_MMC2_INT           INT_24XX_MMC2_IRQ
 209
 210 #else
 211
 212 #define OMAP_MMC1_BASE          0xfffb7800
 213 #define OMAP_MMC1_END           OMAP_MMC1_BASE + 0x7f
 214 #define OMAP_MMC1_INT           INT_MMC
 215
 216 #define OMAP_MMC2_BASE          0xfffb7c00      /* omap16xx only */
 217 #define OMAP_MMC2_END           OMAP_MMC2_BASE + 0x7f
 218 #define OMAP_MMC2_INT           INT_1610_MMC2
 219
 220 #endif
 221
 222 static struct omap_mmc_platform_data mmc1_data;
 223
 224 static u64 mmc1_dmamask = 0xffffffff;
 225
 226 static struct resource mmc1_resources[] = {
 227         {
 228                 .start          = OMAP_MMC1_BASE,
 229                 .end            = OMAP_MMC1_END,
 230                 .flags          = IORESOURCE_MEM,
 231         },
 232         {
 233                 .start          = OMAP_MMC1_INT,
 234                 .flags          = IORESOURCE_IRQ,
 235         },
 236 };
 237
 238 static struct platform_device mmc_omap_device1 = {
 239         .name           = "mmci-omap",
 240         .id             = 1,
 241         .dev = {
 242                 .dma_mask       = &mmc1_dmamask,
 243                 .platform_data  = &mmc1_data,
 244         },
 245         .num_resources  = ARRAY_SIZE(mmc1_resources),
 246         .resource       = mmc1_resources,
 247 };
 248
 249 #if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP2430) || \
 250         defined(CONFIG_ARCH_OMAP34XX)
 251
 252 static struct omap_mmc_platform_data mmc2_data;
 253
 254 static u64 mmc2_dmamask = 0xffffffff;
 255
 256
 257 static struct resource mmc2_resources[] = {
 258         {
 259                 .start          = OMAP_MMC2_BASE,
 260                 .end            = OMAP_MMC2_END,
 261                 .flags          = IORESOURCE_MEM,
 262         },
 263         {
 264                 .start          = OMAP_MMC2_INT,
 265                 .flags          = IORESOURCE_IRQ,
 266         },
 267 };
 268
 269 static struct platform_device mmc_omap_device2 = {
 270         .name           = "mmci-omap",
 271         .id             = 2,
 272         .dev = {
 273                 .dma_mask       = &mmc2_dmamask,
 274                 .platform_data  = &mmc2_data,
 275         },
 276         .num_resources  = ARRAY_SIZE(mmc2_resources),
 277         .resource       = mmc2_resources,
 278 };
 279 #endif
 280
 281 static void __init omap_init_mmc(void)
 282 {
 283         const struct omap_mmc_config    *mmc_conf;
 284         const struct omap_mmc_conf      *mmc;
 285
 286         /* NOTE:  assumes MMC was never (wrongly) enabled */
 287         mmc_conf = omap_get_config(OMAP_TAG_MMC, struct omap_mmc_config);
 288         if (!mmc_conf)
 289                 return;
 290
 291         /* block 1 is always available and has just one pinout option */
 292         mmc = &mmc_conf->mmc[0];
 293
 294         if (cpu_is_omap2430() || cpu_is_omap34xx()) {
 295                 if (mmc->enabled)
 296                         (void) platform_device_register(&mmc_omap_device1);
 297
 298 #if defined(CONFIG_ARCH_OMAP2430) || defined(CONFIG_ARCH_OMAP34XX)
 299                 mmc = &mmc_conf->mmc[1];
 300                 if (mmc->enabled)
 301                         (void) platform_device_register(&mmc_omap_device2);
 302 #endif
 303
 304                 return;
 305         }
 306
 307         if (mmc->enabled) {
 308                 if (cpu_is_omap24xx()) {
 309                         omap_cfg_reg(H18_24XX_MMC_CMD);
 310                         omap_cfg_reg(H15_24XX_MMC_CLKI);
 311                         omap_cfg_reg(G19_24XX_MMC_CLKO);
 312                         omap_cfg_reg(F20_24XX_MMC_DAT0);
 313                         omap_cfg_reg(F19_24XX_MMC_DAT_DIR0);
 314                         omap_cfg_reg(G18_24XX_MMC_CMD_DIR);
 315                 } else {
 316                         omap_cfg_reg(MMC_CMD);
 317                         omap_cfg_reg(MMC_CLK);
 318                         omap_cfg_reg(MMC_DAT0);
 319                         if (cpu_is_omap1710()) {
 320                                 omap_cfg_reg(M15_1710_MMC_CLKI);
 321                                 omap_cfg_reg(P19_1710_MMC_CMDDIR);
 322                                 omap_cfg_reg(P20_1710_MMC_DATDIR0);
 323                         }
 324                 }
 325                 if (mmc->wire4) {
 326                         if (cpu_is_omap24xx()) {
 327                                 omap_cfg_reg(H14_24XX_MMC_DAT1);
 328                                 omap_cfg_reg(E19_24XX_MMC_DAT2);
 329                                 omap_cfg_reg(D19_24XX_MMC_DAT3);
 330                                 omap_cfg_reg(E20_24XX_MMC_DAT_DIR1);
 331                                 omap_cfg_reg(F18_24XX_MMC_DAT_DIR2);
 332                                 omap_cfg_reg(E18_24XX_MMC_DAT_DIR3);
 333                         } else {
 334                                 omap_cfg_reg(MMC_DAT1);
 335                                 /* NOTE:  DAT2 can be on W10 (here) or M15 */
 336                                 if (!mmc->nomux)
 337                                         omap_cfg_reg(MMC_DAT2);
 338                                 omap_cfg_reg(MMC_DAT3);
 339                         }
 340                 }
 341 #if defined(CONFIG_ARCH_OMAP2420)
 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_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
 349                                 v |= (1 << 24); /* not used in 243x */
 350                                 omap_ctrl_writel(v, OMAP2_CONTROL_DEVCONF0);
 351                         }
 352                 }
 353 #endif
 354                 mmc1_data.conf = *mmc;
 355                 (void) platform_device_register(&mmc_omap_device1);
 356         }
 357
 358 #ifdef  CONFIG_ARCH_OMAP16XX
 359         /* block 2 is on newer chips, and has many pinout options */
 360         mmc = &mmc_conf->mmc[1];
 361         if (mmc->enabled) {
 362                 if (!mmc->nomux) {
 363                         omap_cfg_reg(Y8_1610_MMC2_CMD);
 364                         omap_cfg_reg(Y10_1610_MMC2_CLK);
 365                         omap_cfg_reg(R18_1610_MMC2_CLKIN);
 366                         omap_cfg_reg(W8_1610_MMC2_DAT0);
 367                         if (mmc->wire4) {
 368                                 omap_cfg_reg(V8_1610_MMC2_DAT1);
 369                                 omap_cfg_reg(W15_1610_MMC2_DAT2);
 370                                 omap_cfg_reg(R10_1610_MMC2_DAT3);
 371                         }
 372
 373                         /* These are needed for the level shifter */
 374                         omap_cfg_reg(V9_1610_MMC2_CMDDIR);
 375                         omap_cfg_reg(V5_1610_MMC2_DATDIR0);
 376                         omap_cfg_reg(W19_1610_MMC2_DATDIR1);
 377                 }
 378
 379                 /* Feedback clock must be set on OMAP-1710 MMC2 */
 380                 if (cpu_is_omap1710())
 381                         omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
 382                                      MOD_CONF_CTRL_1);
 383                 mmc2_data.conf = *mmc;
 384                 (void) platform_device_register(&mmc_omap_device2);
 385         }
 386 #endif
 387         return;
 388 }
 389
 390 void omap_set_mmc_info(int host, const struct omap_mmc_platform_data *info)
 391 {
 392         switch (host) {
 393         case 1:
 394                 mmc1_data = *info;
 395                 break;
 396 #if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP2430) || \
 397         defined(CONFIG_ARCH_OMAP34XX)
 398         case 2:
 399                 mmc2_data = *info;
 400                 break;
 401 #endif
 402         default:
 403                 BUG();
 404         }
 405 }
 406
 407 #else
 408 void omap_set_mmc_info(int host, const struct omap_mmc_platform_data *info) {}
 409 static inline void omap_init_mmc(void) {}
 410 #endif
 411
 412 /*-------------------------------------------------------------------------*/
 413
 414 /* Numbering for the SPI-capable controllers when used for SPI:
 415  * spi          = 1
 416  * uwire        = 2
 417  * mmc1..2      = 3..4
 418  * mcbsp1..3    = 5..7
 419  */
 420
 421 #if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE)
 422
 423 #define OMAP_UWIRE_BASE         0xfffb3000
 424
 425 static struct resource uwire_resources[] = {
 426         {
 427                 .start          = OMAP_UWIRE_BASE,
 428                 .end            = OMAP_UWIRE_BASE + 0x20,
 429                 .flags          = IORESOURCE_MEM,
 430         },
 431 };
 432
 433 static struct platform_device omap_uwire_device = {
 434         .name      = "omap_uwire",
 435         .id          = -1,
 436         .num_resources  = ARRAY_SIZE(uwire_resources),
 437         .resource       = uwire_resources,
 438 };
 439
 440 static void omap_init_uwire(void)
 441 {
 442         /* FIXME define and use a boot tag; not all boards will be hooking
 443          * up devices to the microwire controller, and multi-board configs
 444          * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
 445          */
 446
 447         /* board-specific code must configure chipselects (only a few
 448          * are normally used) and SCLK/SDI/SDO (each has two choices).
 449          */
 450         (void) platform_device_register(&omap_uwire_device);
 451 }
 452 #else
 453 static inline void omap_init_uwire(void) {}
 454 #endif
 455
 456 /*-------------------------------------------------------------------------*/
 457
 458 #if     defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
 459
 460 #if defined(CONFIG_ARCH_OMAP34XX)
 461 #define OMAP_WDT_BASE           0x48314000
 462 #elif defined(CONFIG_ARCH_OMAP24XX)
 463
 464 #ifdef CONFIG_ARCH_OMAP2430
 465 /* WDT2 */
 466 #define OMAP_WDT_BASE           0x49016000
 467 #else
 468 #define OMAP_WDT_BASE           0x48022000
 469 #endif
 470
 471 #else
 472 #define OMAP_WDT_BASE           0xfffeb000
 473 #endif
 474
 475 static struct resource wdt_resources[] = {
 476         {
 477                 .start          = OMAP_WDT_BASE,
 478                 .end            = OMAP_WDT_BASE + 0x4f,
 479                 .flags          = IORESOURCE_MEM,
 480         },
 481 };
 482
 483 static struct platform_device omap_wdt_device = {
 484         .name      = "omap_wdt",
 485         .id          = -1,
 486         .num_resources  = ARRAY_SIZE(wdt_resources),
 487         .resource       = wdt_resources,
 488 };
 489
 490 static void omap_init_wdt(void)
 491 {
 492         (void) platform_device_register(&omap_wdt_device);
 493 }
 494 #else
 495 static inline void omap_init_wdt(void) {}
 496 #endif
 497
 498 /*-------------------------------------------------------------------------*/
 499
 500 #if defined(CONFIG_HW_RANDOM_OMAP) || defined(CONFIG_HW_RANDOM_OMAP_MODULE)
 501
 502 #ifdef CONFIG_ARCH_OMAP24XX
 503 #define OMAP_RNG_BASE           0x480A0000
 504 #else
 505 #define OMAP_RNG_BASE           0xfffe5000
 506 #endif
 507
 508 static struct resource rng_resources[] = {
 509         {
 510                 .start          = OMAP_RNG_BASE,
 511                 .end            = OMAP_RNG_BASE + 0x4f,
 512                 .flags          = IORESOURCE_MEM,
 513         },
 514 };
 515
 516 static struct platform_device omap_rng_device = {
 517         .name      = "omap_rng",
 518         .id          = -1,
 519         .num_resources  = ARRAY_SIZE(rng_resources),
 520         .resource       = rng_resources,
 521 };
 522
 523 static void omap_init_rng(void)
 524 {
 525         (void) platform_device_register(&omap_rng_device);
 526 }
 527 #else
 528 static inline void omap_init_rng(void) {}
 529 #endif
 530
 531 /*
 532  * This gets called after board-specific INIT_MACHINE, and initializes most
 533  * on-chip peripherals accessible on this board (except for few like USB):
 534  *
 535  *  (a) Does any "standard config" pin muxing needed.  Board-specific
 536  *      code will have muxed GPIO pins and done "nonstandard" setup;
 537  *      that code could live in the boot loader.
 538  *  (b) Populating board-specific platform_data with the data drivers
 539  *      rely on to handle wiring variations.
 540  *  (c) Creating platform devices as meaningful on this board and
 541  *      with this kernel configuration.
 542  *
 543  * Claiming GPIOs, and setting their direction and initial values, is the
 544  * responsibility of the device drivers.  So is responding to probe().
 545  *
 546  * Board-specific knowlege like creating devices or pin setup is to be
 547  * kept out of drivers as much as possible.  In particular, pin setup
 548  * may be handled by the boot loader, and drivers should expect it will
 549  * normally have been done by the time they're probed.
 550  */
 551 static int __init omap_init_devices(void)
 552 {
 553         /* please keep these calls, and their implementations above,
 554          * in alphabetical order so they're easier to sort through.
 555          */
 556         omap_init_dsp();
 557         omap_init_kp();
 558         omap_init_mcbsp();
 559         omap_init_mmc();
 560         omap_init_uwire();
 561         omap_init_wdt();
 562         omap_init_rng();
 563         return 0;
 564 }
 565 arch_initcall(omap_init_devices);