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
  31 #if     defined(CONFIG_OMAP_DSP) || defined(CONFIG_OMAP_DSP_MODULE)
  32
  33 static struct dsp_platform_data dsp_pdata = {
  34         .kdev_list = LIST_HEAD_INIT(dsp_pdata.kdev_list),
  35 };
  36
  37 static struct resource omap_dsp_resources[] = {
  38         {
  39                 .name   = "dsp_mmu",
  40                 .start  = -1,
  41                 .flags  = IORESOURCE_IRQ,
  42         },
  43 };
  44
  45 static struct platform_device omap_dsp_device = {
  46         .name           = "dsp",
  47         .id             = -1,
  48         .num_resources  = ARRAY_SIZE(omap_dsp_resources),
  49         .resource       = omap_dsp_resources,
  50         .dev = {
  51                 .platform_data = &dsp_pdata,
  52         },
  53 };
  54
  55 static inline void omap_init_dsp(void)
  56 {
  57         struct resource *res;
  58         int irq;
  59
  60         if (cpu_is_omap15xx())
  61                 irq = INT_1510_DSP_MMU;
  62         else if (cpu_is_omap16xx())
  63                 irq = INT_1610_DSP_MMU;
  64         else if (cpu_is_omap24xx())
  65                 irq = INT_24XX_DSP_MMU;
  66
  67         res = platform_get_resource_byname(&omap_dsp_device,
  68                                            IORESOURCE_IRQ, "dsp_mmu");
  69         res->start = irq;
  70
  71         platform_device_register(&omap_dsp_device);
  72 }
  73
  74 int dsp_kfunc_device_register(struct dsp_kfunc_device *kdev)
  75 {
  76         static DEFINE_MUTEX(dsp_pdata_lock);
  77
  78         spin_lock_init(&kdev->lock);
  79
  80         mutex_lock(&dsp_pdata_lock);
  81         list_add_tail(&kdev->entry, &dsp_pdata.kdev_list);
  82         mutex_unlock(&dsp_pdata_lock);
  83
  84         return 0;
  85 }
  86 EXPORT_SYMBOL(dsp_kfunc_device_register);
  87
  88 #else
  89 static inline void omap_init_dsp(void) { }
  90 #endif  /* CONFIG_OMAP_DSP */
  91
  92 /*-------------------------------------------------------------------------*/
  93 #if     defined(CONFIG_KEYBOARD_OMAP) || defined(CONFIG_KEYBOARD_OMAP_MODULE)
  94
  95 static void omap_init_kp(void)
  96 {
  97         /* REVISIT: 2430 keypad is on TWL4030 */
  98         if (cpu_is_omap2430() || cpu_is_omap34xx())
  99                 return;
 100
 101         if (machine_is_omap_h2() || machine_is_omap_h3()) {
 102                 omap_cfg_reg(F18_1610_KBC0);
 103                 omap_cfg_reg(D20_1610_KBC1);
 104                 omap_cfg_reg(D19_1610_KBC2);
 105                 omap_cfg_reg(E18_1610_KBC3);
 106                 omap_cfg_reg(C21_1610_KBC4);
 107
 108                 omap_cfg_reg(G18_1610_KBR0);
 109                 omap_cfg_reg(F19_1610_KBR1);
 110                 omap_cfg_reg(H14_1610_KBR2);
 111                 omap_cfg_reg(E20_1610_KBR3);
 112                 omap_cfg_reg(E19_1610_KBR4);
 113                 omap_cfg_reg(N19_1610_KBR5);
 114         } else if (machine_is_omap_perseus2() || machine_is_omap_fsample()) {
 115                 omap_cfg_reg(E2_730_KBR0);
 116                 omap_cfg_reg(J7_730_KBR1);
 117                 omap_cfg_reg(E1_730_KBR2);
 118                 omap_cfg_reg(F3_730_KBR3);
 119                 omap_cfg_reg(D2_730_KBR4);
 120
 121                 omap_cfg_reg(C2_730_KBC0);
 122                 omap_cfg_reg(D3_730_KBC1);
 123                 omap_cfg_reg(E4_730_KBC2);
 124                 omap_cfg_reg(F4_730_KBC3);
 125                 omap_cfg_reg(E3_730_KBC4);
 126         } else if (machine_is_omap_h4()) {
 127                 omap_cfg_reg(T19_24XX_KBR0);
 128                 omap_cfg_reg(R19_24XX_KBR1);
 129                 omap_cfg_reg(V18_24XX_KBR2);
 130                 omap_cfg_reg(M21_24XX_KBR3);
 131                 omap_cfg_reg(E5__24XX_KBR4);
 132                 if (omap_has_menelaus()) {
 133                         omap_cfg_reg(B3__24XX_KBR5);
 134                         omap_cfg_reg(AA4_24XX_KBC2);
 135                         omap_cfg_reg(B13_24XX_KBC6);
 136                 } else {
 137                         omap_cfg_reg(M18_24XX_KBR5);
 138                         omap_cfg_reg(H19_24XX_KBC2);
 139                         omap_cfg_reg(N19_24XX_KBC6);
 140                 }
 141                 omap_cfg_reg(R20_24XX_KBC0);
 142                 omap_cfg_reg(M14_24XX_KBC1);
 143                 omap_cfg_reg(V17_24XX_KBC3);
 144                 omap_cfg_reg(P21_24XX_KBC4);
 145                 omap_cfg_reg(L14_24XX_KBC5);
 146         }
 147 }
 148 #else
 149 static inline void omap_init_kp(void) {}
 150 #endif
 151
 152 /*-------------------------------------------------------------------------*/
 153
 154 #if     defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE) \
 155         || defined(CONFIG_MMC_OMAP_HS) || defined(CONFIG_MMC_OMAP_HS_MODULE)
 156
 157 #if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
 158 #define OMAP_MMC1_BASE          0x4809c000
 159 #define OMAP_MMC1_INT           INT_24XX_MMC_IRQ
 160 #else
 161 #define OMAP_MMC1_BASE          0xfffb7800
 162 #define OMAP_MMC1_INT           INT_MMC
 163 #endif
 164 #define OMAP_MMC2_BASE          0xfffb7c00      /* omap16xx only */
 165
 166 static struct omap_mmc_platform_data mmc1_data;
 167
 168 static u64 mmc1_dmamask = 0xffffffff;
 169
 170 static struct resource mmc1_resources[] = {
 171         {
 172                 .start          = OMAP_MMC1_BASE,
 173                 .end            = OMAP_MMC1_BASE + 0x7f,
 174                 .flags          = IORESOURCE_MEM,
 175         },
 176         {
 177                 .start          = OMAP_MMC1_INT,
 178                 .flags          = IORESOURCE_IRQ,
 179         },
 180 };
 181
 182 static struct platform_device mmc_omap_device1 = {
 183         .name           = "mmci-omap",
 184         .id             = 1,
 185         .dev = {
 186                 .dma_mask       = &mmc1_dmamask,
 187                 .platform_data  = &mmc1_data,
 188         },
 189         .num_resources  = ARRAY_SIZE(mmc1_resources),
 190         .resource       = mmc1_resources,
 191 };
 192
 193 #ifdef  CONFIG_ARCH_OMAP16XX
 194
 195 static struct omap_mmc_platform_data mmc2_data;
 196
 197 static u64 mmc2_dmamask = 0xffffffff;
 198
 199
 200 static struct resource mmc2_resources[] = {
 201         {
 202                 .start          = OMAP_MMC2_BASE,
 203                 .end            = OMAP_MMC2_BASE + 0x7f,
 204                 .flags          = IORESOURCE_MEM,
 205         },
 206         {
 207                 .start          = INT_1610_MMC2,
 208                 .flags          = IORESOURCE_IRQ,
 209         },
 210 };
 211
 212 static struct platform_device mmc_omap_device2 = {
 213         .name           = "mmci-omap",
 214         .id             = 2,
 215         .dev = {
 216                 .dma_mask       = &mmc2_dmamask,
 217                 .platform_data  = &mmc2_data,
 218         },
 219         .num_resources  = ARRAY_SIZE(mmc2_resources),
 220         .resource       = mmc2_resources,
 221 };
 222 #endif
 223
 224 static void __init omap_init_mmc(void)
 225 {
 226         const struct omap_mmc_config    *mmc_conf;
 227         const struct omap_mmc_conf      *mmc;
 228
 229         /* NOTE:  assumes MMC was never (wrongly) enabled */
 230         mmc_conf = omap_get_config(OMAP_TAG_MMC, struct omap_mmc_config);
 231         if (!mmc_conf)
 232                 return;
 233
 234         /* block 1 is always available and has just one pinout option */
 235         mmc = &mmc_conf->mmc[0];
 236
 237         if (cpu_is_omap2430() || cpu_is_omap34xx()) {
 238                 if (mmc->enabled)
 239                         (void) platform_device_register(&mmc_omap_device1);
 240                 return;
 241         }
 242
 243         if (mmc->enabled) {
 244                 if (cpu_is_omap24xx()) {
 245                         omap_cfg_reg(H18_24XX_MMC_CMD);
 246                         omap_cfg_reg(H15_24XX_MMC_CLKI);
 247                         omap_cfg_reg(G19_24XX_MMC_CLKO);
 248                         omap_cfg_reg(F20_24XX_MMC_DAT0);
 249                         omap_cfg_reg(F19_24XX_MMC_DAT_DIR0);
 250                         omap_cfg_reg(G18_24XX_MMC_CMD_DIR);
 251                 } else {
 252                         omap_cfg_reg(MMC_CMD);
 253                         omap_cfg_reg(MMC_CLK);
 254                         omap_cfg_reg(MMC_DAT0);
 255                         if (cpu_is_omap1710()) {
 256                                 omap_cfg_reg(M15_1710_MMC_CLKI);
 257                                 omap_cfg_reg(P19_1710_MMC_CMDDIR);
 258                                 omap_cfg_reg(P20_1710_MMC_DATDIR0);
 259                         }
 260                 }
 261                 if (mmc->wire4) {
 262                         if (cpu_is_omap24xx()) {
 263                                 omap_cfg_reg(H14_24XX_MMC_DAT1);
 264                                 omap_cfg_reg(E19_24XX_MMC_DAT2);
 265                                 omap_cfg_reg(D19_24XX_MMC_DAT3);
 266                                 omap_cfg_reg(E20_24XX_MMC_DAT_DIR1);
 267                                 omap_cfg_reg(F18_24XX_MMC_DAT_DIR2);
 268                                 omap_cfg_reg(E18_24XX_MMC_DAT_DIR3);
 269                         } else {
 270                                 omap_cfg_reg(MMC_DAT1);
 271                                 /* NOTE:  DAT2 can be on W10 (here) or M15 */
 272                                 if (!mmc->nomux)
 273                                         omap_cfg_reg(MMC_DAT2);
 274                                 omap_cfg_reg(MMC_DAT3);
 275                         }
 276                 }
 277 #if defined(CONFIG_ARCH_OMAP2420)
 278                 if (mmc->internal_clock) {
 279                         /*
 280                          * Use internal loop-back in MMC/SDIO
 281                          * Module Input Clock selection
 282                          */
 283                         if (cpu_is_omap24xx()) {
 284                                 u32 v = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
 285                                 v |= (1 << 24); /* not used in 243x */
 286                                 omap_ctrl_writel(v, OMAP2_CONTROL_DEVCONF0);
 287                         }
 288                 }
 289 #endif
 290                 mmc1_data.conf = *mmc;
 291                 (void) platform_device_register(&mmc_omap_device1);
 292         }
 293
 294 #ifdef  CONFIG_ARCH_OMAP16XX
 295         /* block 2 is on newer chips, and has many pinout options */
 296         mmc = &mmc_conf->mmc[1];
 297         if (mmc->enabled) {
 298                 if (!mmc->nomux) {
 299                         omap_cfg_reg(Y8_1610_MMC2_CMD);
 300                         omap_cfg_reg(Y10_1610_MMC2_CLK);
 301                         omap_cfg_reg(R18_1610_MMC2_CLKIN);
 302                         omap_cfg_reg(W8_1610_MMC2_DAT0);
 303                         if (mmc->wire4) {
 304                                 omap_cfg_reg(V8_1610_MMC2_DAT1);
 305                                 omap_cfg_reg(W15_1610_MMC2_DAT2);
 306                                 omap_cfg_reg(R10_1610_MMC2_DAT3);
 307                         }
 308
 309                         /* These are needed for the level shifter */
 310                         omap_cfg_reg(V9_1610_MMC2_CMDDIR);
 311                         omap_cfg_reg(V5_1610_MMC2_DATDIR0);
 312                         omap_cfg_reg(W19_1610_MMC2_DATDIR1);
 313                 }
 314
 315                 /* Feedback clock must be set on OMAP-1710 MMC2 */
 316                 if (cpu_is_omap1710())
 317                         omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
 318                                      MOD_CONF_CTRL_1);
 319                 mmc2_data.conf = *mmc;
 320                 (void) platform_device_register(&mmc_omap_device2);
 321         }
 322 #endif
 323         return;
 324 }
 325
 326 void omap_set_mmc_info(int host, const struct omap_mmc_platform_data *info)
 327 {
 328         switch (host) {
 329         case 1:
 330                 mmc1_data = *info;
 331                 break;
 332 #ifdef CONFIG_ARCH_OMAP16XX
 333         case 2:
 334                 mmc2_data = *info;
 335                 break;
 336 #endif
 337         default:
 338                 BUG();
 339         }
 340 }
 341
 342 #else
 343 void omap_set_mmc_info(int host, const struct omap_mmc_platform_data *info) {}
 344 static inline void omap_init_mmc(void) {}
 345 #endif
 346
 347 /*-------------------------------------------------------------------------*/
 348
 349 /* Numbering for the SPI-capable controllers when used for SPI:
 350  * spi          = 1
 351  * uwire        = 2
 352  * mmc1..2      = 3..4
 353  * mcbsp1..3    = 5..7
 354  */
 355
 356 #if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE)
 357
 358 #define OMAP_UWIRE_BASE         0xfffb3000
 359
 360 static struct resource uwire_resources[] = {
 361         {
 362                 .start          = OMAP_UWIRE_BASE,
 363                 .end            = OMAP_UWIRE_BASE + 0x20,
 364                 .flags          = IORESOURCE_MEM,
 365         },
 366 };
 367
 368 static struct platform_device omap_uwire_device = {
 369         .name      = "omap_uwire",
 370         .id          = -1,
 371         .num_resources  = ARRAY_SIZE(uwire_resources),
 372         .resource       = uwire_resources,
 373 };
 374
 375 static void omap_init_uwire(void)
 376 {
 377         /* FIXME define and use a boot tag; not all boards will be hooking
 378          * up devices to the microwire controller, and multi-board configs
 379          * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
 380          */
 381
 382         /* board-specific code must configure chipselects (only a few
 383          * are normally used) and SCLK/SDI/SDO (each has two choices).
 384          */
 385         (void) platform_device_register(&omap_uwire_device);
 386 }
 387 #else
 388 static inline void omap_init_uwire(void) {}
 389 #endif
 390
 391 /*-------------------------------------------------------------------------*/
 392
 393 #if     defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
 394
 395 #if defined(CONFIG_ARCH_OMAP34XX)
 396 #define OMAP_WDT_BASE           0x48314000
 397 #elif defined(CONFIG_ARCH_OMAP24XX)
 398
 399 #ifdef CONFIG_ARCH_OMAP2430
 400 /* WDT2 */
 401 #define OMAP_WDT_BASE           0x49016000
 402 #else
 403 #define OMAP_WDT_BASE           0x48022000
 404 #endif
 405
 406 #else
 407 #define OMAP_WDT_BASE           0xfffeb000
 408 #endif
 409
 410 static struct resource wdt_resources[] = {
 411         {
 412                 .start          = OMAP_WDT_BASE,
 413                 .end            = OMAP_WDT_BASE + 0x4f,
 414                 .flags          = IORESOURCE_MEM,
 415         },
 416 };
 417
 418 static struct platform_device omap_wdt_device = {
 419         .name      = "omap_wdt",
 420         .id          = -1,
 421         .num_resources  = ARRAY_SIZE(wdt_resources),
 422         .resource       = wdt_resources,
 423 };
 424
 425 static void omap_init_wdt(void)
 426 {
 427         (void) platform_device_register(&omap_wdt_device);
 428 }
 429 #else
 430 static inline void omap_init_wdt(void) {}
 431 #endif
 432
 433 /*-------------------------------------------------------------------------*/
 434
 435 #if defined(CONFIG_HW_RANDOM_OMAP) || defined(CONFIG_HW_RANDOM_OMAP_MODULE)
 436
 437 #ifdef CONFIG_ARCH_OMAP24XX
 438 #define OMAP_RNG_BASE           0x480A0000
 439 #else
 440 #define OMAP_RNG_BASE           0xfffe5000
 441 #endif
 442
 443 static struct resource rng_resources[] = {
 444         {
 445                 .start          = OMAP_RNG_BASE,
 446                 .end            = OMAP_RNG_BASE + 0x4f,
 447                 .flags          = IORESOURCE_MEM,
 448         },
 449 };
 450
 451 static struct platform_device omap_rng_device = {
 452         .name      = "omap_rng",
 453         .id          = -1,
 454         .num_resources  = ARRAY_SIZE(rng_resources),
 455         .resource       = rng_resources,
 456 };
 457
 458 static void omap_init_rng(void)
 459 {
 460         (void) platform_device_register(&omap_rng_device);
 461 }
 462 #else
 463 static inline void omap_init_rng(void) {}
 464 #endif
 465
 466 /*
 467  * This gets called after board-specific INIT_MACHINE, and initializes most
 468  * on-chip peripherals accessible on this board (except for few like USB):
 469  *
 470  *  (a) Does any "standard config" pin muxing needed.  Board-specific
 471  *      code will have muxed GPIO pins and done "nonstandard" setup;
 472  *      that code could live in the boot loader.
 473  *  (b) Populating board-specific platform_data with the data drivers
 474  *      rely on to handle wiring variations.
 475  *  (c) Creating platform devices as meaningful on this board and
 476  *      with this kernel configuration.
 477  *
 478  * Claiming GPIOs, and setting their direction and initial values, is the
 479  * responsibility of the device drivers.  So is responding to probe().
 480  *
 481  * Board-specific knowlege like creating devices or pin setup is to be
 482  * kept out of drivers as much as possible.  In particular, pin setup
 483  * may be handled by the boot loader, and drivers should expect it will
 484  * normally have been done by the time they're probed.
 485  */
 486 static int __init omap_init_devices(void)
 487 {
 488         /* please keep these calls, and their implementations above,
 489          * in alphabetical order so they're easier to sort through.
 490          */
 491         omap_init_dsp();
 492         omap_init_kp();
 493         omap_init_mmc();
 494         omap_init_uwire();
 495         omap_init_wdt();
 496         omap_init_rng();
 497         return 0;
 498 }
 499 arch_initcall(omap_init_devices);