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 #include <linux/io.h>
  17
  18 #include <mach/hardware.h>
  19 #include <asm/mach-types.h>
  20 #include <asm/mach/map.h>
  21
  22 #include <mach/tc.h>
  23 #include <mach/control.h>
  24 #include <mach/board.h>
  25 #include <mach/mmc.h>
  26 #include <mach/mux.h>
  27 #include <mach/gpio.h>
  28 #include <mach/menelaus.h>
  29 #include <mach/mcbsp.h>
  30 #include <mach/dsp_common.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         /* 2430 and 34xx 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         omap_mcbsp_devices = kzalloc(size * sizeof(struct platform_device *),
 164                                      GFP_KERNEL);
 165         if (!omap_mcbsp_devices) {
 166                 printk(KERN_ERR "Could not register McBSP devices\n");
 167                 return;
 168         }
 169
 170         for (i = 0; i < size; i++) {
 171                 struct platform_device *new_mcbsp;
 172                 int ret;
 173
 174                 new_mcbsp = platform_device_alloc("omap-mcbsp", i + 1);
 175                 if (!new_mcbsp)
 176                         continue;
 177                 new_mcbsp->dev.platform_data = &config[i];
 178                 ret = platform_device_add(new_mcbsp);
 179                 if (ret) {
 180                         platform_device_put(new_mcbsp);
 181                         continue;
 182                 }
 183                 omap_mcbsp_devices[i] = new_mcbsp;
 184         }
 185 }
 186
 187 #else
 188 void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
 189                                         int size)
 190 {  }
 191 #endif
 192
 193 /*-------------------------------------------------------------------------*/
 194
 195 #if     defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE) || \
 196         defined(CONFIG_MMC_OMAP_HS) || defined(CONFIG_MMC_OMAP_HS_MODULE)
 197
 198 #if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
 199 #define OMAP_MMC1_BASE          0x4809c000
 200 #define OMAP_MMC1_END           (OMAP_MMC1_BASE + 0x1fc)
 201 #define OMAP_MMC1_INT           INT_24XX_MMC_IRQ
 202
 203 #define OMAP_MMC2_BASE          0x480b4000
 204 #define OMAP_MMC2_END           (OMAP_MMC2_BASE + 0x1fc)
 205 #define OMAP_MMC2_INT           INT_24XX_MMC2_IRQ
 206
 207 #else
 208
 209 #define OMAP_MMC1_BASE          0xfffb7800
 210 #define OMAP_MMC1_END           (OMAP_MMC1_BASE + 0x7f)
 211 #define OMAP_MMC1_INT           INT_MMC
 212
 213 #define OMAP_MMC2_BASE          0xfffb7c00      /* omap16xx only */
 214 #define OMAP_MMC2_END           (OMAP_MMC2_BASE + 0x7f)
 215 #define OMAP_MMC2_INT           INT_1610_MMC2
 216
 217 #endif
 218
 219 static struct omap_mmc_platform_data mmc1_data;
 220
 221 static u64 mmc1_dmamask = 0xffffffff;
 222
 223 static struct resource mmc1_resources[] = {
 224         {
 225                 .start          = OMAP_MMC1_BASE,
 226                 .end            = OMAP_MMC1_END,
 227                 .flags          = IORESOURCE_MEM,
 228         },
 229         {
 230                 .start          = OMAP_MMC1_INT,
 231                 .flags          = IORESOURCE_IRQ,
 232         },
 233 };
 234
 235 static struct platform_device mmc_omap_device1 = {
 236         .name           = "mmci-omap",
 237         .id             = 1,
 238         .dev = {
 239                 .dma_mask       = &mmc1_dmamask,
 240                 .platform_data  = &mmc1_data,
 241         },
 242         .num_resources  = ARRAY_SIZE(mmc1_resources),
 243         .resource       = mmc1_resources,
 244 };
 245
 246 #if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP2430) || \
 247         defined(CONFIG_ARCH_OMAP34XX)
 248
 249 static struct omap_mmc_platform_data mmc2_data;
 250
 251 static u64 mmc2_dmamask = 0xffffffff;
 252
 253 static struct resource mmc2_resources[] = {
 254         {
 255                 .start          = OMAP_MMC2_BASE,
 256                 .end            = OMAP_MMC2_END,
 257                 .flags          = IORESOURCE_MEM,
 258         },
 259         {
 260                 .start          = OMAP_MMC2_INT,
 261                 .flags          = IORESOURCE_IRQ,
 262         },
 263 };
 264
 265 static struct platform_device mmc_omap_device2 = {
 266         .name           = "mmci-omap",
 267         .id             = 2,
 268         .dev = {
 269                 .dma_mask       = &mmc2_dmamask,
 270                 .platform_data  = &mmc2_data,
 271         },
 272         .num_resources  = ARRAY_SIZE(mmc2_resources),
 273         .resource       = mmc2_resources,
 274 };
 275 #endif
 276
 277 static inline void omap_init_mmc_conf(const struct omap_mmc_config *mmc_conf)
 278 {
 279         if (cpu_is_omap2430() || cpu_is_omap34xx())
 280                 return;
 281
 282         if (mmc_conf->mmc[0].enabled) {
 283                 if (cpu_is_omap24xx()) {
 284                         omap_cfg_reg(H18_24XX_MMC_CMD);
 285                         omap_cfg_reg(H15_24XX_MMC_CLKI);
 286                         omap_cfg_reg(G19_24XX_MMC_CLKO);
 287                         omap_cfg_reg(F20_24XX_MMC_DAT0);
 288                         omap_cfg_reg(F19_24XX_MMC_DAT_DIR0);
 289                         omap_cfg_reg(G18_24XX_MMC_CMD_DIR);
 290                 } else {
 291                         omap_cfg_reg(MMC_CMD);
 292                         omap_cfg_reg(MMC_CLK);
 293                         omap_cfg_reg(MMC_DAT0);
 294                         if (cpu_is_omap1710()) {
 295                                 omap_cfg_reg(M15_1710_MMC_CLKI);
 296                                 omap_cfg_reg(P19_1710_MMC_CMDDIR);
 297                                 omap_cfg_reg(P20_1710_MMC_DATDIR0);
 298                         }
 299                 }
 300                 if (mmc_conf->mmc[0].wire4) {
 301                         if (cpu_is_omap24xx()) {
 302                                 omap_cfg_reg(H14_24XX_MMC_DAT1);
 303                                 omap_cfg_reg(E19_24XX_MMC_DAT2);
 304                                 omap_cfg_reg(D19_24XX_MMC_DAT3);
 305                                 omap_cfg_reg(E20_24XX_MMC_DAT_DIR1);
 306                                 omap_cfg_reg(F18_24XX_MMC_DAT_DIR2);
 307                                 omap_cfg_reg(E18_24XX_MMC_DAT_DIR3);
 308                         } else {
 309                                 omap_cfg_reg(MMC_DAT1);
 310                                 /* NOTE:  DAT2 can be on W10 (here) or M15 */
 311                                 if (!mmc_conf->mmc[0].nomux)
 312                                         omap_cfg_reg(MMC_DAT2);
 313                                 omap_cfg_reg(MMC_DAT3);
 314                         }
 315                 }
 316 #if defined(CONFIG_ARCH_OMAP2420)
 317                 if (mmc_conf->mmc[0].internal_clock) {
 318                         /*
 319                          * Use internal loop-back in MMC/SDIO
 320                          * Module Input Clock selection
 321                          */
 322                         if (cpu_is_omap24xx()) {
 323                                 u32 v = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
 324                                 v |= (1 << 24); /* not used in 243x */
 325                                 omap_ctrl_writel(v, OMAP2_CONTROL_DEVCONF0);
 326                         }
 327                 }
 328 #endif
 329         }
 330
 331 #ifdef  CONFIG_ARCH_OMAP16XX
 332         /* block 2 is on newer chips, and has many pinout options */
 333         if (mmc_conf->mmc[1].enabled) {
 334                 if (!mmc_conf->mmc[1].nomux) {
 335                         omap_cfg_reg(Y8_1610_MMC2_CMD);
 336                         omap_cfg_reg(Y10_1610_MMC2_CLK);
 337                         omap_cfg_reg(R18_1610_MMC2_CLKIN);
 338                         omap_cfg_reg(W8_1610_MMC2_DAT0);
 339                         if (mmc_conf->mmc[1].wire4) {
 340                                 omap_cfg_reg(V8_1610_MMC2_DAT1);
 341                                 omap_cfg_reg(W15_1610_MMC2_DAT2);
 342                                 omap_cfg_reg(R10_1610_MMC2_DAT3);
 343                         }
 344
 345                         /* These are needed for the level shifter */
 346                         omap_cfg_reg(V9_1610_MMC2_CMDDIR);
 347                         omap_cfg_reg(V5_1610_MMC2_DATDIR0);
 348                         omap_cfg_reg(W19_1610_MMC2_DATDIR1);
 349                 }
 350
 351                 /* Feedback clock must be set on OMAP-1710 MMC2 */
 352                 if (cpu_is_omap1710())
 353                         omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
 354                                      MOD_CONF_CTRL_1);
 355         }
 356 #endif
 357 }
 358
 359 static void __init omap_init_mmc(void)
 360 {
 361         const struct omap_mmc_config    *mmc_conf;
 362
 363         /* NOTE:  assumes MMC was never (wrongly) enabled */
 364         mmc_conf = omap_get_config(OMAP_TAG_MMC, struct omap_mmc_config);
 365         if (!mmc_conf)
 366                 return;
 367
 368         omap_init_mmc_conf(mmc_conf);
 369
 370         if (mmc_conf->mmc[0].enabled) {
 371                 mmc1_data.conf = mmc_conf->mmc[0];
 372                 (void) platform_device_register(&mmc_omap_device1);
 373         }
 374
 375 #if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP2430) || \
 376         defined(CONFIG_ARCH_OMAP34XX)
 377         if (mmc_conf->mmc[1].enabled) {
 378                 mmc2_data.conf = mmc_conf->mmc[1];
 379                 (void) platform_device_register(&mmc_omap_device2);
 380         }
 381 #endif
 382 }
 383
 384 void omap_set_mmc_info(int host, const struct omap_mmc_platform_data *info)
 385 {
 386         switch (host) {
 387         case 1:
 388                 mmc1_data = *info;
 389                 break;
 390 #if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP2430) || \
 391         defined(CONFIG_ARCH_OMAP34XX)
 392         case 2:
 393                 mmc2_data = *info;
 394                 break;
 395 #endif
 396         default:
 397                 BUG();
 398         }
 399 }
 400
 401 #else
 402 static inline void omap_init_mmc(void) {}
 403 void omap_set_mmc_info(int host, const struct omap_mmc_platform_data *info) {}
 404 #endif
 405
 406 /*-------------------------------------------------------------------------*/
 407
 408 /* Numbering for the SPI-capable controllers when used for SPI:
 409  * spi          = 1
 410  * uwire        = 2
 411  * mmc1..2      = 3..4
 412  * mcbsp1..3    = 5..7
 413  */
 414
 415 #if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE)
 416
 417 #define OMAP_UWIRE_BASE         0xfffb3000
 418
 419 static struct resource uwire_resources[] = {
 420         {
 421                 .start          = OMAP_UWIRE_BASE,
 422                 .end            = OMAP_UWIRE_BASE + 0x20,
 423                 .flags          = IORESOURCE_MEM,
 424         },
 425 };
 426
 427 static struct platform_device omap_uwire_device = {
 428         .name      = "omap_uwire",
 429         .id          = -1,
 430         .num_resources  = ARRAY_SIZE(uwire_resources),
 431         .resource       = uwire_resources,
 432 };
 433
 434 static void omap_init_uwire(void)
 435 {
 436         /* FIXME define and use a boot tag; not all boards will be hooking
 437          * up devices to the microwire controller, and multi-board configs
 438          * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
 439          */
 440
 441         /* board-specific code must configure chipselects (only a few
 442          * are normally used) and SCLK/SDI/SDO (each has two choices).
 443          */
 444         (void) platform_device_register(&omap_uwire_device);
 445 }
 446 #else
 447 static inline void omap_init_uwire(void) {}
 448 #endif
 449
 450 /*-------------------------------------------------------------------------*/
 451
 452 #if     defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
 453
 454 #ifdef CONFIG_ARCH_OMAP24XX
 455 #define OMAP_WDT_BASE           0x48022000
 456 #else
 457 #define OMAP_WDT_BASE           0xfffeb000
 458 #endif
 459
 460 static struct resource wdt_resources[] = {
 461         {
 462                 .start          = OMAP_WDT_BASE,
 463                 .end            = OMAP_WDT_BASE + 0x4f,
 464                 .flags          = IORESOURCE_MEM,
 465         },
 466 };
 467
 468 static struct platform_device omap_wdt_device = {
 469         .name      = "omap_wdt",
 470         .id          = -1,
 471         .num_resources  = ARRAY_SIZE(wdt_resources),
 472         .resource       = wdt_resources,
 473 };
 474
 475 static void omap_init_wdt(void)
 476 {
 477         (void) platform_device_register(&omap_wdt_device);
 478 }
 479 #else
 480 static inline void omap_init_wdt(void) {}
 481 #endif
 482
 483 /*-------------------------------------------------------------------------*/
 484
 485 #if defined(CONFIG_HW_RANDOM_OMAP) || defined(CONFIG_HW_RANDOM_OMAP_MODULE)
 486
 487 #ifdef CONFIG_ARCH_OMAP24XX
 488 #define OMAP_RNG_BASE           0x480A0000
 489 #else
 490 #define OMAP_RNG_BASE           0xfffe5000
 491 #endif
 492
 493 static struct resource rng_resources[] = {
 494         {
 495                 .start          = OMAP_RNG_BASE,
 496                 .end            = OMAP_RNG_BASE + 0x4f,
 497                 .flags          = IORESOURCE_MEM,
 498         },
 499 };
 500
 501 static struct platform_device omap_rng_device = {
 502         .name      = "omap_rng",
 503         .id          = -1,
 504         .num_resources  = ARRAY_SIZE(rng_resources),
 505         .resource       = rng_resources,
 506 };
 507
 508 static void omap_init_rng(void)
 509 {
 510         (void) platform_device_register(&omap_rng_device);
 511 }
 512 #else
 513 static inline void omap_init_rng(void) {}
 514 #endif
 515
 516 /*
 517  * This gets called after board-specific INIT_MACHINE, and initializes most
 518  * on-chip peripherals accessible on this board (except for few like USB):
 519  *
 520  *  (a) Does any "standard config" pin muxing needed.  Board-specific
 521  *      code will have muxed GPIO pins and done "nonstandard" setup;
 522  *      that code could live in the boot loader.
 523  *  (b) Populating board-specific platform_data with the data drivers
 524  *      rely on to handle wiring variations.
 525  *  (c) Creating platform devices as meaningful on this board and
 526  *      with this kernel configuration.
 527  *
 528  * Claiming GPIOs, and setting their direction and initial values, is the
 529  * responsibility of the device drivers.  So is responding to probe().
 530  *
 531  * Board-specific knowlege like creating devices or pin setup is to be
 532  * kept out of drivers as much as possible.  In particular, pin setup
 533  * may be handled by the boot loader, and drivers should expect it will
 534  * normally have been done by the time they're probed.
 535  */
 536 static int __init omap_init_devices(void)
 537 {
 538         /* please keep these calls, and their implementations above,
 539          * in alphabetical order so they're easier to sort through.
 540          */
 541         omap_init_dsp();
 542         omap_init_kp();
 543         omap_init_mmc();
 544         omap_init_uwire();
 545         omap_init_wdt();
 546         omap_init_rng();
 547         return 0;
 548 }
 549 arch_initcall(omap_init_devices);