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;
 157
 158 void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
 159                                         int size)
 160 {
 161         int i;
 162
 163         if (size > OMAP_MAX_MCBSP_COUNT) {
 164                 printk(KERN_WARNING "Registered too many McBSPs platform_data."
 165                         " Using maximum (%d) available.\n",
 166                         OMAP_MAX_MCBSP_COUNT);
 167                 size = OMAP_MAX_MCBSP_COUNT;
 168         }
 169
 170         omap_mcbsp_devices = kzalloc(size * sizeof(struct platform_device *),
 171                                      GFP_KERNEL);
 172         if (!omap_mcbsp_devices) {
 173                 printk(KERN_ERR "Could not register McBSP devices\n");
 174                 return;
 175         }
 176
 177         for (i = 0; i < size; i++) {
 178                 struct platform_device *new_mcbsp;
 179                 int ret;
 180
 181                 new_mcbsp = platform_device_alloc("omap-mcbsp", i + 1);
 182                 if (!new_mcbsp)
 183                         continue;
 184                 new_mcbsp->dev.platform_data = &config[i];
 185                 ret = platform_device_add(new_mcbsp);
 186                 if (ret) {
 187                         platform_device_put(new_mcbsp);
 188                         continue;
 189                 }
 190                 omap_mcbsp_devices[i] = new_mcbsp;
 191         }
 192 }
 193
 194 #else
 195 void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
 196                                         int size)
 197 {  }
 198 #endif
 199
 200 /*-------------------------------------------------------------------------*/
 201
 202 #if     defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE) \
 203         || defined(CONFIG_MMC_OMAP_HS) || defined(CONFIG_MMC_OMAP_HS_MODULE)
 204
 205 #if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
 206 #define OMAP_MMC1_BASE          0x4809c000
 207 #define OMAP_MMC1_END           OMAP_MMC1_BASE + 0x1fc
 208 #define OMAP_MMC1_INT           INT_24XX_MMC_IRQ
 209
 210 #define OMAP_MMC2_BASE          0x480b4000
 211 #define OMAP_MMC2_END           OMAP_MMC2_BASE + 0x1fc
 212 #define OMAP_MMC2_INT           INT_24XX_MMC2_IRQ
 213
 214 #else
 215
 216 #define OMAP_MMC1_BASE          0xfffb7800
 217 #define OMAP_MMC1_END           OMAP_MMC1_BASE + 0x7f
 218 #define OMAP_MMC1_INT           INT_MMC
 219
 220 #define OMAP_MMC2_BASE          0xfffb7c00      /* omap16xx only */
 221 #define OMAP_MMC2_END           OMAP_MMC2_BASE + 0x7f
 222 #define OMAP_MMC2_INT           INT_1610_MMC2
 223
 224 #endif
 225
 226 static struct omap_mmc_platform_data mmc1_data;
 227
 228 static u64 mmc1_dmamask = 0xffffffff;
 229
 230 static struct resource mmc1_resources[] = {
 231         {
 232                 .start          = OMAP_MMC1_BASE,
 233                 .end            = OMAP_MMC1_END,
 234                 .flags          = IORESOURCE_MEM,
 235         },
 236         {
 237                 .start          = OMAP_MMC1_INT,
 238                 .flags          = IORESOURCE_IRQ,
 239         },
 240 };
 241
 242 static struct platform_device mmc_omap_device1 = {
 243         .name           = "mmci-omap",
 244         .id             = 1,
 245         .dev = {
 246                 .dma_mask       = &mmc1_dmamask,
 247                 .platform_data  = &mmc1_data,
 248         },
 249         .num_resources  = ARRAY_SIZE(mmc1_resources),
 250         .resource       = mmc1_resources,
 251 };
 252
 253 #if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP2430) || \
 254         defined(CONFIG_ARCH_OMAP34XX)
 255
 256 static struct omap_mmc_platform_data mmc2_data;
 257
 258 static u64 mmc2_dmamask = 0xffffffff;
 259
 260
 261 static struct resource mmc2_resources[] = {
 262         {
 263                 .start          = OMAP_MMC2_BASE,
 264                 .end            = OMAP_MMC2_END,
 265                 .flags          = IORESOURCE_MEM,
 266         },
 267         {
 268                 .start          = OMAP_MMC2_INT,
 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_data,
 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         /* NOTE:  assumes MMC was never (wrongly) enabled */
 291         mmc_conf = omap_get_config(OMAP_TAG_MMC, struct omap_mmc_config);
 292         if (!mmc_conf)
 293                 return;
 294
 295         /* block 1 is always available and has just one pinout option */
 296         mmc = &mmc_conf->mmc[0];
 297
 298         if (cpu_is_omap2430() || cpu_is_omap34xx()) {
 299                 if (mmc->enabled)
 300                         (void) platform_device_register(&mmc_omap_device1);
 301
 302 #if defined(CONFIG_ARCH_OMAP2430) || defined(CONFIG_ARCH_OMAP34XX)
 303                 mmc = &mmc_conf->mmc[1];
 304                 if (mmc->enabled)
 305                         (void) platform_device_register(&mmc_omap_device2);
 306 #endif
 307
 308                 return;
 309         }
 310
 311         if (mmc->enabled) {
 312                 if (cpu_is_omap24xx()) {
 313                         omap_cfg_reg(H18_24XX_MMC_CMD);
 314                         omap_cfg_reg(H15_24XX_MMC_CLKI);
 315                         omap_cfg_reg(G19_24XX_MMC_CLKO);
 316                         omap_cfg_reg(F20_24XX_MMC_DAT0);
 317                         omap_cfg_reg(F19_24XX_MMC_DAT_DIR0);
 318                         omap_cfg_reg(G18_24XX_MMC_CMD_DIR);
 319                 } else {
 320                         omap_cfg_reg(MMC_CMD);
 321                         omap_cfg_reg(MMC_CLK);
 322                         omap_cfg_reg(MMC_DAT0);
 323                         if (cpu_is_omap1710()) {
 324                                 omap_cfg_reg(M15_1710_MMC_CLKI);
 325                                 omap_cfg_reg(P19_1710_MMC_CMDDIR);
 326                                 omap_cfg_reg(P20_1710_MMC_DATDIR0);
 327                         }
 328                 }
 329                 if (mmc->wire4) {
 330                         if (cpu_is_omap24xx()) {
 331                                 omap_cfg_reg(H14_24XX_MMC_DAT1);
 332                                 omap_cfg_reg(E19_24XX_MMC_DAT2);
 333                                 omap_cfg_reg(D19_24XX_MMC_DAT3);
 334                                 omap_cfg_reg(E20_24XX_MMC_DAT_DIR1);
 335                                 omap_cfg_reg(F18_24XX_MMC_DAT_DIR2);
 336                                 omap_cfg_reg(E18_24XX_MMC_DAT_DIR3);
 337                         } else {
 338                                 omap_cfg_reg(MMC_DAT1);
 339                                 /* NOTE:  DAT2 can be on W10 (here) or M15 */
 340                                 if (!mmc->nomux)
 341                                         omap_cfg_reg(MMC_DAT2);
 342                                 omap_cfg_reg(MMC_DAT3);
 343                         }
 344                 }
 345 #if defined(CONFIG_ARCH_OMAP2420)
 346                 if (mmc->internal_clock) {
 347                         /*
 348                          * Use internal loop-back in MMC/SDIO
 349                          * Module Input Clock selection
 350                          */
 351                         if (cpu_is_omap24xx()) {
 352                                 u32 v = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
 353                                 v |= (1 << 24); /* not used in 243x */
 354                                 omap_ctrl_writel(v, OMAP2_CONTROL_DEVCONF0);
 355                         }
 356                 }
 357 #endif
 358                 mmc1_data.conf = *mmc;
 359                 (void) platform_device_register(&mmc_omap_device1);
 360         }
 361
 362 #ifdef  CONFIG_ARCH_OMAP16XX
 363         /* block 2 is on newer chips, and has many pinout options */
 364         mmc = &mmc_conf->mmc[1];
 365         if (mmc->enabled) {
 366                 if (!mmc->nomux) {
 367                         omap_cfg_reg(Y8_1610_MMC2_CMD);
 368                         omap_cfg_reg(Y10_1610_MMC2_CLK);
 369                         omap_cfg_reg(R18_1610_MMC2_CLKIN);
 370                         omap_cfg_reg(W8_1610_MMC2_DAT0);
 371                         if (mmc->wire4) {
 372                                 omap_cfg_reg(V8_1610_MMC2_DAT1);
 373                                 omap_cfg_reg(W15_1610_MMC2_DAT2);
 374                                 omap_cfg_reg(R10_1610_MMC2_DAT3);
 375                         }
 376
 377                         /* These are needed for the level shifter */
 378                         omap_cfg_reg(V9_1610_MMC2_CMDDIR);
 379                         omap_cfg_reg(V5_1610_MMC2_DATDIR0);
 380                         omap_cfg_reg(W19_1610_MMC2_DATDIR1);
 381                 }
 382
 383                 /* Feedback clock must be set on OMAP-1710 MMC2 */
 384                 if (cpu_is_omap1710())
 385                         omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
 386                                      MOD_CONF_CTRL_1);
 387                 mmc2_data.conf = *mmc;
 388                 (void) platform_device_register(&mmc_omap_device2);
 389         }
 390 #endif
 391         return;
 392 }
 393
 394 void omap_set_mmc_info(int host, const struct omap_mmc_platform_data *info)
 395 {
 396         switch (host) {
 397         case 1:
 398                 mmc1_data = *info;
 399                 break;
 400 #if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP2430) || \
 401         defined(CONFIG_ARCH_OMAP34XX)
 402         case 2:
 403                 mmc2_data = *info;
 404                 break;
 405 #endif
 406         default:
 407                 BUG();
 408         }
 409 }
 410
 411 #else
 412 void omap_set_mmc_info(int host, const struct omap_mmc_platform_data *info) {}
 413 static inline void omap_init_mmc(void) {}
 414 #endif
 415
 416 /*-------------------------------------------------------------------------*/
 417
 418 /* Numbering for the SPI-capable controllers when used for SPI:
 419  * spi          = 1
 420  * uwire        = 2
 421  * mmc1..2      = 3..4
 422  * mcbsp1..3    = 5..7
 423  */
 424
 425 #if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE)
 426
 427 #define OMAP_UWIRE_BASE         0xfffb3000
 428
 429 static struct resource uwire_resources[] = {
 430         {
 431                 .start          = OMAP_UWIRE_BASE,
 432                 .end            = OMAP_UWIRE_BASE + 0x20,
 433                 .flags          = IORESOURCE_MEM,
 434         },
 435 };
 436
 437 static struct platform_device omap_uwire_device = {
 438         .name      = "omap_uwire",
 439         .id          = -1,
 440         .num_resources  = ARRAY_SIZE(uwire_resources),
 441         .resource       = uwire_resources,
 442 };
 443
 444 static void omap_init_uwire(void)
 445 {
 446         /* FIXME define and use a boot tag; not all boards will be hooking
 447          * up devices to the microwire controller, and multi-board configs
 448          * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
 449          */
 450
 451         /* board-specific code must configure chipselects (only a few
 452          * are normally used) and SCLK/SDI/SDO (each has two choices).
 453          */
 454         (void) platform_device_register(&omap_uwire_device);
 455 }
 456 #else
 457 static inline void omap_init_uwire(void) {}
 458 #endif
 459
 460 /*-------------------------------------------------------------------------*/
 461
 462 #if     defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
 463
 464 #if defined(CONFIG_ARCH_OMAP34XX)
 465 #define OMAP_WDT_BASE           0x48314000
 466 #elif defined(CONFIG_ARCH_OMAP24XX)
 467
 468 #ifdef CONFIG_ARCH_OMAP2430
 469 /* WDT2 */
 470 #define OMAP_WDT_BASE           0x49016000
 471 #else
 472 #define OMAP_WDT_BASE           0x48022000
 473 #endif
 474
 475 #else
 476 #define OMAP_WDT_BASE           0xfffeb000
 477 #endif
 478
 479 static struct resource wdt_resources[] = {
 480         {
 481                 .start          = OMAP_WDT_BASE,
 482                 .end            = OMAP_WDT_BASE + 0x4f,
 483                 .flags          = IORESOURCE_MEM,
 484         },
 485 };
 486
 487 static struct platform_device omap_wdt_device = {
 488         .name      = "omap_wdt",
 489         .id          = -1,
 490         .num_resources  = ARRAY_SIZE(wdt_resources),
 491         .resource       = wdt_resources,
 492 };
 493
 494 static void omap_init_wdt(void)
 495 {
 496         (void) platform_device_register(&omap_wdt_device);
 497 }
 498 #else
 499 static inline void omap_init_wdt(void) {}
 500 #endif
 501
 502 /*-------------------------------------------------------------------------*/
 503
 504 #if defined(CONFIG_HW_RANDOM_OMAP) || defined(CONFIG_HW_RANDOM_OMAP_MODULE)
 505
 506 #ifdef CONFIG_ARCH_OMAP24XX
 507 #define OMAP_RNG_BASE           0x480A0000
 508 #else
 509 #define OMAP_RNG_BASE           0xfffe5000
 510 #endif
 511
 512 static struct resource rng_resources[] = {
 513         {
 514                 .start          = OMAP_RNG_BASE,
 515                 .end            = OMAP_RNG_BASE + 0x4f,
 516                 .flags          = IORESOURCE_MEM,
 517         },
 518 };
 519
 520 static struct platform_device omap_rng_device = {
 521         .name      = "omap_rng",
 522         .id          = -1,
 523         .num_resources  = ARRAY_SIZE(rng_resources),
 524         .resource       = rng_resources,
 525 };
 526
 527 static void omap_init_rng(void)
 528 {
 529         (void) platform_device_register(&omap_rng_device);
 530 }
 531 #else
 532 static inline void omap_init_rng(void) {}
 533 #endif
 534
 535 /*
 536  * This gets called after board-specific INIT_MACHINE, and initializes most
 537  * on-chip peripherals accessible on this board (except for few like USB):
 538  *
 539  *  (a) Does any "standard config" pin muxing needed.  Board-specific
 540  *      code will have muxed GPIO pins and done "nonstandard" setup;
 541  *      that code could live in the boot loader.
 542  *  (b) Populating board-specific platform_data with the data drivers
 543  *      rely on to handle wiring variations.
 544  *  (c) Creating platform devices as meaningful on this board and
 545  *      with this kernel configuration.
 546  *
 547  * Claiming GPIOs, and setting their direction and initial values, is the
 548  * responsibility of the device drivers.  So is responding to probe().
 549  *
 550  * Board-specific knowlege like creating devices or pin setup is to be
 551  * kept out of drivers as much as possible.  In particular, pin setup
 552  * may be handled by the boot loader, and drivers should expect it will
 553  * normally have been done by the time they're probed.
 554  */
 555 static int __init omap_init_devices(void)
 556 {
 557         /* please keep these calls, and their implementations above,
 558          * in alphabetical order so they're easier to sort through.
 559          */
 560         omap_init_dsp();
 561         omap_init_kp();
 562         omap_init_mmc();
 563         omap_init_uwire();
 564         omap_init_wdt();
 565         omap_init_rng();
 566         return 0;
 567 }
 568 arch_initcall(omap_init_devices);