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_END           OMAP_MMC1_BASE + 0x1fc
 160 #define OMAP_MMC1_INT           INT_24XX_MMC_IRQ
 161
 162 #define OMAP_MMC2_BASE          0x480b4000
 163 #define OMAP_MMC2_END           OMAP_MMC2_BASE + 0x1fc
 164 #define OMAP_MMC2_INT           INT_24XX_MMC2_IRQ
 165
 166 #else
 167
 168 #define OMAP_MMC1_BASE          0xfffb7800
 169 #define OMAP_MMC1_END           OMAP_MMC1_BASE + 0x7f
 170 #define OMAP_MMC1_INT           INT_MMC
 171
 172 #define OMAP_MMC2_BASE          0xfffb7c00      /* omap16xx only */
 173 #define OMAP_MMC2_END           OMAP_MMC2_BASE + 0x7f
 174 #define OMAP_MMC2_INT           INT_1610_MMC2
 175
 176 #endif
 177
 178 static struct omap_mmc_platform_data mmc1_data;
 179
 180 static u64 mmc1_dmamask = 0xffffffff;
 181
 182 static struct resource mmc1_resources[] = {
 183         {
 184                 .start          = OMAP_MMC1_BASE,
 185                 .end            = OMAP_MMC1_END,
 186                 .flags          = IORESOURCE_MEM,
 187         },
 188         {
 189                 .start          = OMAP_MMC1_INT,
 190                 .flags          = IORESOURCE_IRQ,
 191         },
 192 };
 193
 194 static struct platform_device mmc_omap_device1 = {
 195         .name           = "mmci-omap",
 196         .id             = 1,
 197         .dev = {
 198                 .dma_mask       = &mmc1_dmamask,
 199                 .platform_data  = &mmc1_data,
 200         },
 201         .num_resources  = ARRAY_SIZE(mmc1_resources),
 202         .resource       = mmc1_resources,
 203 };
 204
 205 #if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP243X) || \
 206         defined(CONFIG_ARCH_OMAP34XX)
 207
 208 static struct omap_mmc_platform_data mmc2_data;
 209
 210 static u64 mmc2_dmamask = 0xffffffff;
 211
 212
 213 static struct resource mmc2_resources[] = {
 214         {
 215                 .start          = OMAP_MMC2_BASE,
 216                 .end            = OMAP_MMC2_END,
 217                 .flags          = IORESOURCE_MEM,
 218         },
 219         {
 220                 .start          = OMAP_MMC2_INT,
 221                 .flags          = IORESOURCE_IRQ,
 222         },
 223 };
 224
 225 static struct platform_device mmc_omap_device2 = {
 226         .name           = "mmci-omap",
 227         .id             = 2,
 228         .dev = {
 229                 .dma_mask       = &mmc2_dmamask,
 230                 .platform_data  = &mmc2_data,
 231         },
 232         .num_resources  = ARRAY_SIZE(mmc2_resources),
 233         .resource       = mmc2_resources,
 234 };
 235 #endif
 236
 237 static void __init omap_init_mmc(void)
 238 {
 239         const struct omap_mmc_config    *mmc_conf;
 240         const struct omap_mmc_conf      *mmc;
 241
 242         /* NOTE:  assumes MMC was never (wrongly) enabled */
 243         mmc_conf = omap_get_config(OMAP_TAG_MMC, struct omap_mmc_config);
 244         if (!mmc_conf)
 245                 return;
 246
 247         /* block 1 is always available and has just one pinout option */
 248         mmc = &mmc_conf->mmc[0];
 249
 250         if (cpu_is_omap2430() || cpu_is_omap34xx()) {
 251                 if (mmc->enabled)
 252                         (void) platform_device_register(&mmc_omap_device1);
 253
 254 #if defined(CONFIG_ARCH_OMAP243X) || defined(CONFIG_ARCH_OMAP34XX)
 255                 mmc = &mmc_conf->mmc[1];
 256                 if (mmc->enabled)
 257                         (void) platform_device_register(&mmc_omap_device2);
 258 #endif
 259
 260                 return;
 261         }
 262
 263         if (mmc->enabled) {
 264                 if (cpu_is_omap24xx()) {
 265                         omap_cfg_reg(H18_24XX_MMC_CMD);
 266                         omap_cfg_reg(H15_24XX_MMC_CLKI);
 267                         omap_cfg_reg(G19_24XX_MMC_CLKO);
 268                         omap_cfg_reg(F20_24XX_MMC_DAT0);
 269                         omap_cfg_reg(F19_24XX_MMC_DAT_DIR0);
 270                         omap_cfg_reg(G18_24XX_MMC_CMD_DIR);
 271                 } else {
 272                         omap_cfg_reg(MMC_CMD);
 273                         omap_cfg_reg(MMC_CLK);
 274                         omap_cfg_reg(MMC_DAT0);
 275                         if (cpu_is_omap1710()) {
 276                                 omap_cfg_reg(M15_1710_MMC_CLKI);
 277                                 omap_cfg_reg(P19_1710_MMC_CMDDIR);
 278                                 omap_cfg_reg(P20_1710_MMC_DATDIR0);
 279                         }
 280                 }
 281                 if (mmc->wire4) {
 282                         if (cpu_is_omap24xx()) {
 283                                 omap_cfg_reg(H14_24XX_MMC_DAT1);
 284                                 omap_cfg_reg(E19_24XX_MMC_DAT2);
 285                                 omap_cfg_reg(D19_24XX_MMC_DAT3);
 286                                 omap_cfg_reg(E20_24XX_MMC_DAT_DIR1);
 287                                 omap_cfg_reg(F18_24XX_MMC_DAT_DIR2);
 288                                 omap_cfg_reg(E18_24XX_MMC_DAT_DIR3);
 289                         } else {
 290                                 omap_cfg_reg(MMC_DAT1);
 291                                 /* NOTE:  DAT2 can be on W10 (here) or M15 */
 292                                 if (!mmc->nomux)
 293                                         omap_cfg_reg(MMC_DAT2);
 294                                 omap_cfg_reg(MMC_DAT3);
 295                         }
 296                 }
 297 #if defined(CONFIG_ARCH_OMAP2420)
 298                 if (mmc->internal_clock) {
 299                         /*
 300                          * Use internal loop-back in MMC/SDIO
 301                          * Module Input Clock selection
 302                          */
 303                         if (cpu_is_omap24xx()) {
 304                                 u32 v = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
 305                                 v |= (1 << 24); /* not used in 243x */
 306                                 omap_ctrl_writel(v, OMAP2_CONTROL_DEVCONF0);
 307                         }
 308                 }
 309 #endif
 310                 mmc1_data.conf = *mmc;
 311                 (void) platform_device_register(&mmc_omap_device1);
 312         }
 313
 314 #ifdef  CONFIG_ARCH_OMAP16XX
 315         /* block 2 is on newer chips, and has many pinout options */
 316         mmc = &mmc_conf->mmc[1];
 317         if (mmc->enabled) {
 318                 if (!mmc->nomux) {
 319                         omap_cfg_reg(Y8_1610_MMC2_CMD);
 320                         omap_cfg_reg(Y10_1610_MMC2_CLK);
 321                         omap_cfg_reg(R18_1610_MMC2_CLKIN);
 322                         omap_cfg_reg(W8_1610_MMC2_DAT0);
 323                         if (mmc->wire4) {
 324                                 omap_cfg_reg(V8_1610_MMC2_DAT1);
 325                                 omap_cfg_reg(W15_1610_MMC2_DAT2);
 326                                 omap_cfg_reg(R10_1610_MMC2_DAT3);
 327                         }
 328
 329                         /* These are needed for the level shifter */
 330                         omap_cfg_reg(V9_1610_MMC2_CMDDIR);
 331                         omap_cfg_reg(V5_1610_MMC2_DATDIR0);
 332                         omap_cfg_reg(W19_1610_MMC2_DATDIR1);
 333                 }
 334
 335                 /* Feedback clock must be set on OMAP-1710 MMC2 */
 336                 if (cpu_is_omap1710())
 337                         omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
 338                                      MOD_CONF_CTRL_1);
 339                 mmc2_data.conf = *mmc;
 340                 (void) platform_device_register(&mmc_omap_device2);
 341         }
 342 #endif
 343         return;
 344 }
 345
 346 void omap_set_mmc_info(int host, const struct omap_mmc_platform_data *info)
 347 {
 348         switch (host) {
 349         case 1:
 350                 mmc1_data = *info;
 351                 break;
 352 #if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP243X) || \
 353         defined(CONFIG_ARCH_OMAP34XX)
 354         case 2:
 355                 mmc2_data = *info;
 356                 break;
 357 #endif
 358         default:
 359                 BUG();
 360         }
 361 }
 362
 363 #else
 364 void omap_set_mmc_info(int host, const struct omap_mmc_platform_data *info) {}
 365 static inline void omap_init_mmc(void) {}
 366 #endif
 367
 368 /*-------------------------------------------------------------------------*/
 369
 370 /* Numbering for the SPI-capable controllers when used for SPI:
 371  * spi          = 1
 372  * uwire        = 2
 373  * mmc1..2      = 3..4
 374  * mcbsp1..3    = 5..7
 375  */
 376
 377 #if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE)
 378
 379 #define OMAP_UWIRE_BASE         0xfffb3000
 380
 381 static struct resource uwire_resources[] = {
 382         {
 383                 .start          = OMAP_UWIRE_BASE,
 384                 .end            = OMAP_UWIRE_BASE + 0x20,
 385                 .flags          = IORESOURCE_MEM,
 386         },
 387 };
 388
 389 static struct platform_device omap_uwire_device = {
 390         .name      = "omap_uwire",
 391         .id          = -1,
 392         .num_resources  = ARRAY_SIZE(uwire_resources),
 393         .resource       = uwire_resources,
 394 };
 395
 396 static void omap_init_uwire(void)
 397 {
 398         /* FIXME define and use a boot tag; not all boards will be hooking
 399          * up devices to the microwire controller, and multi-board configs
 400          * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
 401          */
 402
 403         /* board-specific code must configure chipselects (only a few
 404          * are normally used) and SCLK/SDI/SDO (each has two choices).
 405          */
 406         (void) platform_device_register(&omap_uwire_device);
 407 }
 408 #else
 409 static inline void omap_init_uwire(void) {}
 410 #endif
 411
 412 /*-------------------------------------------------------------------------*/
 413
 414 #if     defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
 415
 416 #if defined(CONFIG_ARCH_OMAP34XX)
 417 #define OMAP_WDT_BASE           0x48314000
 418 #elif defined(CONFIG_ARCH_OMAP24XX)
 419
 420 #ifdef CONFIG_ARCH_OMAP2430
 421 /* WDT2 */
 422 #define OMAP_WDT_BASE           0x49016000
 423 #else
 424 #define OMAP_WDT_BASE           0x48022000
 425 #endif
 426
 427 #else
 428 #define OMAP_WDT_BASE           0xfffeb000
 429 #endif
 430
 431 static struct resource wdt_resources[] = {
 432         {
 433                 .start          = OMAP_WDT_BASE,
 434                 .end            = OMAP_WDT_BASE + 0x4f,
 435                 .flags          = IORESOURCE_MEM,
 436         },
 437 };
 438
 439 static struct platform_device omap_wdt_device = {
 440         .name      = "omap_wdt",
 441         .id          = -1,
 442         .num_resources  = ARRAY_SIZE(wdt_resources),
 443         .resource       = wdt_resources,
 444 };
 445
 446 static void omap_init_wdt(void)
 447 {
 448         (void) platform_device_register(&omap_wdt_device);
 449 }
 450 #else
 451 static inline void omap_init_wdt(void) {}
 452 #endif
 453
 454 /*-------------------------------------------------------------------------*/
 455
 456 #if defined(CONFIG_HW_RANDOM_OMAP) || defined(CONFIG_HW_RANDOM_OMAP_MODULE)
 457
 458 #ifdef CONFIG_ARCH_OMAP24XX
 459 #define OMAP_RNG_BASE           0x480A0000
 460 #else
 461 #define OMAP_RNG_BASE           0xfffe5000
 462 #endif
 463
 464 static struct resource rng_resources[] = {
 465         {
 466                 .start          = OMAP_RNG_BASE,
 467                 .end            = OMAP_RNG_BASE + 0x4f,
 468                 .flags          = IORESOURCE_MEM,
 469         },
 470 };
 471
 472 static struct platform_device omap_rng_device = {
 473         .name      = "omap_rng",
 474         .id          = -1,
 475         .num_resources  = ARRAY_SIZE(rng_resources),
 476         .resource       = rng_resources,
 477 };
 478
 479 static void omap_init_rng(void)
 480 {
 481         (void) platform_device_register(&omap_rng_device);
 482 }
 483 #else
 484 static inline void omap_init_rng(void) {}
 485 #endif
 486
 487 /*
 488  * This gets called after board-specific INIT_MACHINE, and initializes most
 489  * on-chip peripherals accessible on this board (except for few like USB):
 490  *
 491  *  (a) Does any "standard config" pin muxing needed.  Board-specific
 492  *      code will have muxed GPIO pins and done "nonstandard" setup;
 493  *      that code could live in the boot loader.
 494  *  (b) Populating board-specific platform_data with the data drivers
 495  *      rely on to handle wiring variations.
 496  *  (c) Creating platform devices as meaningful on this board and
 497  *      with this kernel configuration.
 498  *
 499  * Claiming GPIOs, and setting their direction and initial values, is the
 500  * responsibility of the device drivers.  So is responding to probe().
 501  *
 502  * Board-specific knowlege like creating devices or pin setup is to be
 503  * kept out of drivers as much as possible.  In particular, pin setup
 504  * may be handled by the boot loader, and drivers should expect it will
 505  * normally have been done by the time they're probed.
 506  */
 507 static int __init omap_init_devices(void)
 508 {
 509         /* please keep these calls, and their implementations above,
 510          * in alphabetical order so they're easier to sort through.
 511          */
 512         omap_init_dsp();
 513         omap_init_kp();
 514         omap_init_mmc();
 515         omap_init_uwire();
 516         omap_init_wdt();
 517         omap_init_rng();
 518         return 0;
 519 }
 520 arch_initcall(omap_init_devices);