git.oblomov.eu Git - linux-2.6/blob - 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/board.h>
  24 #include <mach/mmc.h>
  25 #include <mach/mux.h>
  26 #include <mach/gpio.h>
  27 #include <mach/menelaus.h>
  28 #include <mach/mcbsp.h>
  29
  30 #if     defined(CONFIG_OMAP_DSP) || defined(CONFIG_OMAP_DSP_MODULE)
  31
  32 #include "../plat-omap/dsp/dsp_common.h"
  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         mutex_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         if (machine_is_omap_h2() || machine_is_omap_h3()) {
  99                 omap_cfg_reg(F18_1610_KBC0);
 100                 omap_cfg_reg(D20_1610_KBC1);
 101                 omap_cfg_reg(D19_1610_KBC2);
 102                 omap_cfg_reg(E18_1610_KBC3);
 103                 omap_cfg_reg(C21_1610_KBC4);
 104
 105                 omap_cfg_reg(G18_1610_KBR0);
 106                 omap_cfg_reg(F19_1610_KBR1);
 107                 omap_cfg_reg(H14_1610_KBR2);
 108                 omap_cfg_reg(E20_1610_KBR3);
 109                 omap_cfg_reg(E19_1610_KBR4);
 110                 omap_cfg_reg(N19_1610_KBR5);
 111         } else if (machine_is_omap_perseus2() || machine_is_omap_fsample()) {
 112                 omap_cfg_reg(E2_730_KBR0);
 113                 omap_cfg_reg(J7_730_KBR1);
 114                 omap_cfg_reg(E1_730_KBR2);
 115                 omap_cfg_reg(F3_730_KBR3);
 116                 omap_cfg_reg(D2_730_KBR4);
 117
 118                 omap_cfg_reg(C2_730_KBC0);
 119                 omap_cfg_reg(D3_730_KBC1);
 120                 omap_cfg_reg(E4_730_KBC2);
 121                 omap_cfg_reg(F4_730_KBC3);
 122                 omap_cfg_reg(E3_730_KBC4);
 123         } else if (machine_is_omap_h4()) {
 124                 omap_cfg_reg(T19_24XX_KBR0);
 125                 omap_cfg_reg(R19_24XX_KBR1);
 126                 omap_cfg_reg(V18_24XX_KBR2);
 127                 omap_cfg_reg(M21_24XX_KBR3);
 128                 omap_cfg_reg(E5__24XX_KBR4);
 129                 if (omap_has_menelaus()) {
 130                         omap_cfg_reg(B3__24XX_KBR5);
 131                         omap_cfg_reg(AA4_24XX_KBC2);
 132                         omap_cfg_reg(B13_24XX_KBC6);
 133                 } else {
 134                         omap_cfg_reg(M18_24XX_KBR5);
 135                         omap_cfg_reg(H19_24XX_KBC2);
 136                         omap_cfg_reg(N19_24XX_KBC6);
 137                 }
 138                 omap_cfg_reg(R20_24XX_KBC0);
 139                 omap_cfg_reg(M14_24XX_KBC1);
 140                 omap_cfg_reg(V17_24XX_KBC3);
 141                 omap_cfg_reg(P21_24XX_KBC4);
 142                 omap_cfg_reg(L14_24XX_KBC5);
 143         }
 144 }
 145 #else
 146 static inline void omap_init_kp(void) {}
 147 #endif
 148
 149 /*-------------------------------------------------------------------------*/
 150 #if defined(CONFIG_OMAP_MCBSP) || defined(CONFIG_OMAP_MCBSP_MODULE)
 151
 152 static struct platform_device **omap_mcbsp_devices;
 153
 154 void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
 155                                         int size)
 156 {
 157         int i;
 158
 159         if (size > OMAP_MAX_MCBSP_COUNT) {
 160                 printk(KERN_WARNING "Registered too many McBSPs platform_data."
 161                         " Using maximum (%d) available.\n",
 162                         OMAP_MAX_MCBSP_COUNT);
 163                 size = OMAP_MAX_MCBSP_COUNT;
 164         }
 165
 166         omap_mcbsp_devices = kzalloc(size * sizeof(struct platform_device *),
 167                                      GFP_KERNEL);
 168         if (!omap_mcbsp_devices) {
 169                 printk(KERN_ERR "Could not register McBSP devices\n");
 170                 return;
 171         }
 172
 173         for (i = 0; i < size; i++) {
 174                 struct platform_device *new_mcbsp;
 175                 int ret;
 176
 177                 new_mcbsp = platform_device_alloc("omap-mcbsp", i + 1);
 178                 if (!new_mcbsp)
 179                         continue;
 180                 new_mcbsp->dev.platform_data = &config[i];
 181                 ret = platform_device_add(new_mcbsp);
 182                 if (ret) {
 183                         platform_device_put(new_mcbsp);
 184                         continue;
 185                 }
 186                 omap_mcbsp_devices[i] = new_mcbsp;
 187         }
 188 }
 189
 190 #else
 191 void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
 192                                         int size)
 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 static struct resource mmc2_resources[] = {
 257         {
 258                 .start          = OMAP_MMC2_BASE,
 259                 .end            = OMAP_MMC2_END,
 260                 .flags          = IORESOURCE_MEM,
 261         },
 262         {
 263                 .start          = OMAP_MMC2_INT,
 264                 .flags          = IORESOURCE_IRQ,
 265         },
 266 };
 267
 268 static struct platform_device mmc_omap_device2 = {
 269         .name           = "mmci-omap",
 270         .id             = 2,
 271         .dev = {
 272                 .dma_mask       = &mmc2_dmamask,
 273                 .platform_data  = &mmc2_data,
 274         },
 275         .num_resources  = ARRAY_SIZE(mmc2_resources),
 276         .resource       = mmc2_resources,
 277 };
 278 #endif
 279
 280 static inline void omap_init_mmc_conf(const struct omap_mmc_config *mmc_conf)
 281 {
 282         if (cpu_is_omap2430() || cpu_is_omap34xx())
 283                 return;
 284
 285         if (mmc_conf->mmc[0].enabled) {
 286                 if (cpu_is_omap24xx()) {
 287                         omap_cfg_reg(H18_24XX_MMC_CMD);
 288                         omap_cfg_reg(H15_24XX_MMC_CLKI);
 289                         omap_cfg_reg(G19_24XX_MMC_CLKO);
 290                         omap_cfg_reg(F20_24XX_MMC_DAT0);
 291                         omap_cfg_reg(F19_24XX_MMC_DAT_DIR0);
 292                         omap_cfg_reg(G18_24XX_MMC_CMD_DIR);
 293                 } else {
 294                         omap_cfg_reg(MMC_CMD);
 295                         omap_cfg_reg(MMC_CLK);
 296                         omap_cfg_reg(MMC_DAT0);
 297                         if (cpu_is_omap1710()) {
 298                                 omap_cfg_reg(M15_1710_MMC_CLKI);
 299                                 omap_cfg_reg(P19_1710_MMC_CMDDIR);
 300                                 omap_cfg_reg(P20_1710_MMC_DATDIR0);
 301                         }
 302                 }
 303                 if (mmc_conf->mmc[0].wire4) {
 304                         if (cpu_is_omap24xx()) {
 305                                 omap_cfg_reg(H14_24XX_MMC_DAT1);
 306                                 omap_cfg_reg(E19_24XX_MMC_DAT2);
 307                                 omap_cfg_reg(D19_24XX_MMC_DAT3);
 308                                 omap_cfg_reg(E20_24XX_MMC_DAT_DIR1);
 309                                 omap_cfg_reg(F18_24XX_MMC_DAT_DIR2);
 310                                 omap_cfg_reg(E18_24XX_MMC_DAT_DIR3);
 311                         } else {
 312                                 omap_cfg_reg(MMC_DAT1);
 313                                 /* NOTE:  DAT2 can be on W10 (here) or M15 */
 314                                 if (!mmc_conf->mmc[0].nomux)
 315                                         omap_cfg_reg(MMC_DAT2);
 316                                 omap_cfg_reg(MMC_DAT3);
 317                         }
 318                 }
 319         }
 320
 321 #ifdef  CONFIG_ARCH_OMAP16XX
 322         /* block 2 is on newer chips, and has many pinout options */
 323         if (mmc_conf->mmc[1].enabled) {
 324                 if (!mmc_conf->mmc[1].nomux) {
 325                         omap_cfg_reg(Y8_1610_MMC2_CMD);
 326                         omap_cfg_reg(Y10_1610_MMC2_CLK);
 327                         omap_cfg_reg(R18_1610_MMC2_CLKIN);
 328                         omap_cfg_reg(W8_1610_MMC2_DAT0);
 329                         if (mmc_conf->mmc[1].wire4) {
 330                                 omap_cfg_reg(V8_1610_MMC2_DAT1);
 331                                 omap_cfg_reg(W15_1610_MMC2_DAT2);
 332                                 omap_cfg_reg(R10_1610_MMC2_DAT3);
 333                         }
 334
 335                         /* These are needed for the level shifter */
 336                         omap_cfg_reg(V9_1610_MMC2_CMDDIR);
 337                         omap_cfg_reg(V5_1610_MMC2_DATDIR0);
 338                         omap_cfg_reg(W19_1610_MMC2_DATDIR1);
 339                 }
 340
 341                 /* Feedback clock must be set on OMAP-1710 MMC2 */
 342                 if (cpu_is_omap1710())
 343                         omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
 344                                      MOD_CONF_CTRL_1);
 345         }
 346 #endif
 347 }
 348
 349 static void __init omap_init_mmc(void)
 350 {
 351         const struct omap_mmc_config    *mmc_conf;
 352
 353         /* NOTE:  assumes MMC was never (wrongly) enabled */
 354         mmc_conf = omap_get_config(OMAP_TAG_MMC, struct omap_mmc_config);
 355         if (!mmc_conf)
 356                 return;
 357
 358         omap_init_mmc_conf(mmc_conf);
 359
 360         if (mmc_conf->mmc[0].enabled) {
 361                 mmc1_data.conf = mmc_conf->mmc[0];
 362                 (void) platform_device_register(&mmc_omap_device1);
 363         }
 364
 365 #if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP2430) || \
 366         defined(CONFIG_ARCH_OMAP34XX)
 367         if (mmc_conf->mmc[1].enabled) {
 368                 mmc2_data.conf = mmc_conf->mmc[1];
 369                 (void) platform_device_register(&mmc_omap_device2);
 370         }
 371 #endif
 372 }
 373
 374 void omap_set_mmc_info(int host, const struct omap_mmc_platform_data *info)
 375 {
 376         switch (host) {
 377         case 1:
 378                 mmc1_data = *info;
 379                 break;
 380 #if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP2430) || \
 381         defined(CONFIG_ARCH_OMAP34XX)
 382         case 2:
 383                 mmc2_data = *info;
 384                 break;
 385 #endif
 386         default:
 387                 BUG();
 388         }
 389 }
 390
 391 #else
 392 static inline void omap_init_mmc(void) {}
 393 void omap_set_mmc_info(int host, const struct omap_mmc_platform_data *info) {}
 394 #endif
 395
 396 /*-------------------------------------------------------------------------*/
 397
 398 /* Numbering for the SPI-capable controllers when used for SPI:
 399  * spi          = 1
 400  * uwire        = 2
 401  * mmc1..2      = 3..4
 402  * mcbsp1..3    = 5..7
 403  */
 404
 405 #if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE)
 406
 407 #define OMAP_UWIRE_BASE         0xfffb3000
 408
 409 static struct resource uwire_resources[] = {
 410         {
 411                 .start          = OMAP_UWIRE_BASE,
 412                 .end            = OMAP_UWIRE_BASE + 0x20,
 413                 .flags          = IORESOURCE_MEM,
 414         },
 415 };
 416
 417 static struct platform_device omap_uwire_device = {
 418         .name      = "omap_uwire",
 419         .id          = -1,
 420         .num_resources  = ARRAY_SIZE(uwire_resources),
 421         .resource       = uwire_resources,
 422 };
 423
 424 static void omap_init_uwire(void)
 425 {
 426         /* FIXME define and use a boot tag; not all boards will be hooking
 427          * up devices to the microwire controller, and multi-board configs
 428          * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
 429          */
 430
 431         /* board-specific code must configure chipselects (only a few
 432          * are normally used) and SCLK/SDI/SDO (each has two choices).
 433          */
 434         (void) platform_device_register(&omap_uwire_device);
 435 }
 436 #else
 437 static inline void omap_init_uwire(void) {}
 438 #endif
 439
 440 /*-------------------------------------------------------------------------*/
 441
 442 #if     defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
 443
 444 static struct resource wdt_resources[] = {
 445         {
 446                 .flags          = IORESOURCE_MEM,
 447         },
 448 };
 449
 450 static struct platform_device omap_wdt_device = {
 451         .name      = "omap_wdt",
 452         .id          = -1,
 453         .num_resources  = ARRAY_SIZE(wdt_resources),
 454         .resource       = wdt_resources,
 455 };
 456
 457 static void omap_init_wdt(void)
 458 {
 459         if (cpu_is_omap16xx())
 460                 wdt_resources[0].start = 0xfffeb000;
 461         else if (cpu_is_omap2420())
 462                 wdt_resources[0].start = 0x48022000; /* WDT2 */
 463         else if (cpu_is_omap2430())
 464                 wdt_resources[0].start = 0x49016000; /* WDT2 */
 465         else if (cpu_is_omap343x())
 466                 wdt_resources[0].start = 0x48314000; /* WDT2 */
 467         else
 468                 return;
 469
 470         wdt_resources[0].end = wdt_resources[0].start + 0x4f;
 471
 472         (void) platform_device_register(&omap_wdt_device);
 473 }
 474 #else
 475 static inline void omap_init_wdt(void) {}
 476 #endif
 477
 478 /*-------------------------------------------------------------------------*/
 479
 480 #if defined(CONFIG_HW_RANDOM_OMAP) || defined(CONFIG_HW_RANDOM_OMAP_MODULE)
 481
 482 #ifdef CONFIG_ARCH_OMAP24XX
 483 #define OMAP_RNG_BASE           0x480A0000
 484 #else
 485 #define OMAP_RNG_BASE           0xfffe5000
 486 #endif
 487
 488 static struct resource rng_resources[] = {
 489         {
 490                 .start          = OMAP_RNG_BASE,
 491                 .end            = OMAP_RNG_BASE + 0x4f,
 492                 .flags          = IORESOURCE_MEM,
 493         },
 494 };
 495
 496 static struct platform_device omap_rng_device = {
 497         .name      = "omap_rng",
 498         .id          = -1,
 499         .num_resources  = ARRAY_SIZE(rng_resources),
 500         .resource       = rng_resources,
 501 };
 502
 503 static void omap_init_rng(void)
 504 {
 505         (void) platform_device_register(&omap_rng_device);
 506 }
 507 #else
 508 static inline void omap_init_rng(void) {}
 509 #endif
 510
 511 /*
 512  * This gets called after board-specific INIT_MACHINE, and initializes most
 513  * on-chip peripherals accessible on this board (except for few like USB):
 514  *
 515  *  (a) Does any "standard config" pin muxing needed.  Board-specific
 516  *      code will have muxed GPIO pins and done "nonstandard" setup;
 517  *      that code could live in the boot loader.
 518  *  (b) Populating board-specific platform_data with the data drivers
 519  *      rely on to handle wiring variations.
 520  *  (c) Creating platform devices as meaningful on this board and
 521  *      with this kernel configuration.
 522  *
 523  * Claiming GPIOs, and setting their direction and initial values, is the
 524  * responsibility of the device drivers.  So is responding to probe().
 525  *
 526  * Board-specific knowlege like creating devices or pin setup is to be
 527  * kept out of drivers as much as possible.  In particular, pin setup
 528  * may be handled by the boot loader, and drivers should expect it will
 529  * normally have been done by the time they're probed.
 530  */
 531 static int __init omap_init_devices(void)
 532 {
 533 /*
 534  * Need to enable relevant once for 2430 SDP
 535  */
 536 #ifndef CONFIG_MACH_OMAP_2430SDP
 537         /* please keep these calls, and their implementations above,
 538          * in alphabetical order so they're easier to sort through.
 539          */
 540         omap_init_dsp();
 541         omap_init_kp();
 542         omap_init_mmc();
 543         omap_init_uwire();
 544         omap_init_wdt();
 545         omap_init_rng();
 546 #endif
 547         return 0;
 548 }
 549 arch_initcall(omap_init_devices);