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/board.h>
  24 #include <asm/arch/mux.h>
  25 #include <asm/arch/gpio.h>
  26 #include <asm/arch/menelaus.h>
  27
  28 #if     defined(CONFIG_OMAP_DSP) || defined(CONFIG_OMAP_DSP_MODULE)
  29
  30 #include "../plat-omap/dsp/dsp_common.h"
  31
  32 static struct dsp_platform_data dsp_pdata = {
  33         .kdev_list = LIST_HEAD_INIT(dsp_pdata.kdev_list),
  34 };
  35
  36 static struct resource omap_dsp_resources[] = {
  37         {
  38                 .name   = "dsp_mmu",
  39                 .start  = -1,
  40                 .flags  = IORESOURCE_IRQ,
  41         },
  42 };
  43
  44 static struct platform_device omap_dsp_device = {
  45         .name           = "dsp",
  46         .id             = -1,
  47         .num_resources  = ARRAY_SIZE(omap_dsp_resources),
  48         .resource       = omap_dsp_resources,
  49         .dev = {
  50                 .platform_data = &dsp_pdata,
  51         },
  52 };
  53
  54 static inline void omap_init_dsp(void)
  55 {
  56         struct resource *res;
  57         int irq;
  58
  59         if (cpu_is_omap15xx())
  60                 irq = INT_1510_DSP_MMU;
  61         else if (cpu_is_omap16xx())
  62                 irq = INT_1610_DSP_MMU;
  63         else if (cpu_is_omap24xx())
  64                 irq = INT_24XX_DSP_MMU;
  65
  66         res = platform_get_resource_byname(&omap_dsp_device,
  67                                            IORESOURCE_IRQ, "dsp_mmu");
  68         res->start = irq;
  69
  70         platform_device_register(&omap_dsp_device);
  71 }
  72
  73 int dsp_kfunc_device_register(struct dsp_kfunc_device *kdev)
  74 {
  75         static DEFINE_MUTEX(dsp_pdata_lock);
  76
  77         mutex_init(&kdev->lock);
  78
  79         mutex_lock(&dsp_pdata_lock);
  80         list_add_tail(&kdev->entry, &dsp_pdata.kdev_list);
  81         mutex_unlock(&dsp_pdata_lock);
  82
  83         return 0;
  84 }
  85 EXPORT_SYMBOL(dsp_kfunc_device_register);
  86
  87 #else
  88 static inline void omap_init_dsp(void) { }
  89 #endif  /* CONFIG_OMAP_DSP */
  90
  91 /*-------------------------------------------------------------------------*/
  92 #if     defined(CONFIG_I2C_OMAP) || defined(CONFIG_I2C_OMAP_MODULE)
  93
  94 #define OMAP1_I2C_BASE          0xfffb3800
  95 #define OMAP2_I2C_BASE1         0x48070000
  96 #define OMAP_I2C_SIZE           0x3f
  97 #define OMAP1_I2C_INT           INT_I2C
  98 #define OMAP2_I2C_INT1          56
  99
 100 static struct resource i2c_resources1[] = {
 101         {
 102                 .start          = 0,
 103                 .end            = 0,
 104                 .flags          = IORESOURCE_MEM,
 105         },
 106         {
 107                 .start          = 0,
 108                 .flags          = IORESOURCE_IRQ,
 109         },
 110 };
 111
 112 /* DMA not used; works around erratum writing to non-empty i2c fifo */
 113
 114 static struct platform_device omap_i2c_device1 = {
 115         .name           = "i2c_omap",
 116         .id             = 1,
 117         .num_resources  = ARRAY_SIZE(i2c_resources1),
 118         .resource       = i2c_resources1,
 119 };
 120
 121 /* See also arch/arm/mach-omap2/devices.c for second I2C on 24xx */
 122 static void omap_init_i2c(void)
 123 {
 124         if (cpu_is_omap24xx()) {
 125                 i2c_resources1[0].start = OMAP2_I2C_BASE1;
 126                 i2c_resources1[0].end = OMAP2_I2C_BASE1 + OMAP_I2C_SIZE;
 127                 i2c_resources1[1].start = OMAP2_I2C_INT1;
 128         } else {
 129                 i2c_resources1[0].start = OMAP1_I2C_BASE;
 130                 i2c_resources1[0].end = OMAP1_I2C_BASE + OMAP_I2C_SIZE;
 131                 i2c_resources1[1].start = OMAP1_I2C_INT;
 132         }
 133
 134         /* FIXME define and use a boot tag, in case of boards that
 135          * either don't wire up I2C, or chips that mux it differently...
 136          * it can include clocking and address info, maybe more.
 137          */
 138         if (cpu_is_omap24xx()) {
 139                 omap_cfg_reg(M19_24XX_I2C1_SCL);
 140                 omap_cfg_reg(L15_24XX_I2C1_SDA);
 141         } else {
 142                 omap_cfg_reg(I2C_SCL);
 143                 omap_cfg_reg(I2C_SDA);
 144         }
 145
 146         (void) platform_device_register(&omap_i2c_device1);
 147 }
 148
 149 #else
 150 static inline void omap_init_i2c(void) {}
 151 #endif
 152
 153 /*-------------------------------------------------------------------------*/
 154 #if     defined(CONFIG_KEYBOARD_OMAP) || defined(CONFIG_KEYBOARD_OMAP_MODULE)
 155
 156 static void omap_init_kp(void)
 157 {
 158         if (machine_is_omap_h2() || machine_is_omap_h3()) {
 159                 omap_cfg_reg(F18_1610_KBC0);
 160                 omap_cfg_reg(D20_1610_KBC1);
 161                 omap_cfg_reg(D19_1610_KBC2);
 162                 omap_cfg_reg(E18_1610_KBC3);
 163                 omap_cfg_reg(C21_1610_KBC4);
 164
 165                 omap_cfg_reg(G18_1610_KBR0);
 166                 omap_cfg_reg(F19_1610_KBR1);
 167                 omap_cfg_reg(H14_1610_KBR2);
 168                 omap_cfg_reg(E20_1610_KBR3);
 169                 omap_cfg_reg(E19_1610_KBR4);
 170                 omap_cfg_reg(N19_1610_KBR5);
 171         } else if (machine_is_omap_perseus2() || machine_is_omap_fsample()) {
 172                 omap_cfg_reg(E2_730_KBR0);
 173                 omap_cfg_reg(J7_730_KBR1);
 174                 omap_cfg_reg(E1_730_KBR2);
 175                 omap_cfg_reg(F3_730_KBR3);
 176                 omap_cfg_reg(D2_730_KBR4);
 177
 178                 omap_cfg_reg(C2_730_KBC0);
 179                 omap_cfg_reg(D3_730_KBC1);
 180                 omap_cfg_reg(E4_730_KBC2);
 181                 omap_cfg_reg(F4_730_KBC3);
 182                 omap_cfg_reg(E3_730_KBC4);
 183         } else if (machine_is_omap_h4()) {
 184                 omap_cfg_reg(T19_24XX_KBR0);
 185                 omap_cfg_reg(R19_24XX_KBR1);
 186                 omap_cfg_reg(V18_24XX_KBR2);
 187                 omap_cfg_reg(M21_24XX_KBR3);
 188                 omap_cfg_reg(E5__24XX_KBR4);
 189                 if (omap_has_menelaus()) {
 190                         omap_cfg_reg(B3__24XX_KBR5);
 191                         omap_cfg_reg(AA4_24XX_KBC2);
 192                         omap_cfg_reg(B13_24XX_KBC6);
 193                 } else {
 194                         omap_cfg_reg(M18_24XX_KBR5);
 195                         omap_cfg_reg(H19_24XX_KBC2);
 196                         omap_cfg_reg(N19_24XX_KBC6);
 197                 }
 198                 omap_cfg_reg(R20_24XX_KBC0);
 199                 omap_cfg_reg(M14_24XX_KBC1);
 200                 omap_cfg_reg(V17_24XX_KBC3);
 201                 omap_cfg_reg(P21_24XX_KBC4);
 202                 omap_cfg_reg(L14_24XX_KBC5);
 203         }
 204 }
 205 #else
 206 static inline void omap_init_kp(void) {}
 207 #endif
 208
 209 /*-------------------------------------------------------------------------*/
 210
 211 #if     defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
 212
 213 #ifdef CONFIG_ARCH_OMAP24XX
 214 #define OMAP_MMC1_BASE          0x4809c000
 215 #define OMAP_MMC1_INT           INT_24XX_MMC_IRQ
 216 #else
 217 #define OMAP_MMC1_BASE          0xfffb7800
 218 #define OMAP_MMC1_INT           INT_MMC
 219 #endif
 220 #define OMAP_MMC2_BASE          0xfffb7c00      /* omap16xx only */
 221
 222 static struct omap_mmc_conf mmc1_conf;
 223
 224 static u64 mmc1_dmamask = 0xffffffff;
 225
 226 static struct resource mmc1_resources[] = {
 227         {
 228                 .start          = OMAP_MMC1_BASE,
 229                 .end            = OMAP_MMC1_BASE + 0x7f,
 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_conf,
 244         },
 245         .num_resources  = ARRAY_SIZE(mmc1_resources),
 246         .resource       = mmc1_resources,
 247 };
 248
 249 #ifdef  CONFIG_ARCH_OMAP16XX
 250
 251 static struct omap_mmc_conf mmc2_conf;
 252
 253 static u64 mmc2_dmamask = 0xffffffff;
 254
 255 static struct resource mmc2_resources[] = {
 256         {
 257                 .start          = OMAP_MMC2_BASE,
 258                 .end            = OMAP_MMC2_BASE + 0x7f,
 259                 .flags          = IORESOURCE_MEM,
 260         },
 261         {
 262                 .start          = INT_1610_MMC2,
 263                 .flags          = IORESOURCE_IRQ,
 264         },
 265 };
 266
 267 static struct platform_device mmc_omap_device2 = {
 268         .name           = "mmci-omap",
 269         .id             = 2,
 270         .dev = {
 271                 .dma_mask       = &mmc2_dmamask,
 272                 .platform_data  = &mmc2_conf,
 273         },
 274         .num_resources  = ARRAY_SIZE(mmc2_resources),
 275         .resource       = mmc2_resources,
 276 };
 277 #endif
 278
 279 static void __init omap_init_mmc(void)
 280 {
 281         const struct omap_mmc_config    *mmc_conf;
 282         const struct omap_mmc_conf      *mmc;
 283
 284         /* NOTE:  assumes MMC was never (wrongly) enabled */
 285         mmc_conf = omap_get_config(OMAP_TAG_MMC, struct omap_mmc_config);
 286         if (!mmc_conf)
 287                 return;
 288
 289         /* block 1 is always available and has just one pinout option */
 290         mmc = &mmc_conf->mmc[0];
 291         if (mmc->enabled) {
 292                 if (cpu_is_omap24xx()) {
 293                         omap_cfg_reg(H18_24XX_MMC_CMD);
 294                         omap_cfg_reg(H15_24XX_MMC_CLKI);
 295                         omap_cfg_reg(G19_24XX_MMC_CLKO);
 296                         omap_cfg_reg(F20_24XX_MMC_DAT0);
 297                         omap_cfg_reg(F19_24XX_MMC_DAT_DIR0);
 298                         omap_cfg_reg(G18_24XX_MMC_CMD_DIR);
 299                 } else {
 300                         omap_cfg_reg(MMC_CMD);
 301                         omap_cfg_reg(MMC_CLK);
 302                         omap_cfg_reg(MMC_DAT0);
 303                         if (cpu_is_omap1710()) {
 304                                 omap_cfg_reg(M15_1710_MMC_CLKI);
 305                                 omap_cfg_reg(P19_1710_MMC_CMDDIR);
 306                                 omap_cfg_reg(P20_1710_MMC_DATDIR0);
 307                         }
 308                 }
 309                 if (mmc->wire4) {
 310                         if (cpu_is_omap24xx()) {
 311                                 omap_cfg_reg(H14_24XX_MMC_DAT1);
 312                                 omap_cfg_reg(E19_24XX_MMC_DAT2);
 313                                 omap_cfg_reg(D19_24XX_MMC_DAT3);
 314                                 omap_cfg_reg(E20_24XX_MMC_DAT_DIR1);
 315                                 omap_cfg_reg(F18_24XX_MMC_DAT_DIR2);
 316                                 omap_cfg_reg(E18_24XX_MMC_DAT_DIR3);
 317                         } else {
 318                                 omap_cfg_reg(MMC_DAT1);
 319                                 /* NOTE:  DAT2 can be on W10 (here) or M15 */
 320                                 if (!mmc->nomux)
 321                                         omap_cfg_reg(MMC_DAT2);
 322                                 omap_cfg_reg(MMC_DAT3);
 323                         }
 324                 }
 325                 mmc1_conf = *mmc;
 326                 (void) platform_device_register(&mmc_omap_device1);
 327         }
 328
 329 #ifdef  CONFIG_ARCH_OMAP16XX
 330         /* block 2 is on newer chips, and has many pinout options */
 331         mmc = &mmc_conf->mmc[1];
 332         if (mmc->enabled) {
 333                 if (!mmc->nomux) {
 334                         omap_cfg_reg(Y8_1610_MMC2_CMD);
 335                         omap_cfg_reg(Y10_1610_MMC2_CLK);
 336                         omap_cfg_reg(R18_1610_MMC2_CLKIN);
 337                         omap_cfg_reg(W8_1610_MMC2_DAT0);
 338                         if (mmc->wire4) {
 339                                 omap_cfg_reg(V8_1610_MMC2_DAT1);
 340                                 omap_cfg_reg(W15_1610_MMC2_DAT2);
 341                                 omap_cfg_reg(R10_1610_MMC2_DAT3);
 342                         }
 343
 344                         /* These are needed for the level shifter */
 345                         omap_cfg_reg(V9_1610_MMC2_CMDDIR);
 346                         omap_cfg_reg(V5_1610_MMC2_DATDIR0);
 347                         omap_cfg_reg(W19_1610_MMC2_DATDIR1);
 348                 }
 349
 350                 /* Feedback clock must be set on OMAP-1710 MMC2 */
 351                 if (cpu_is_omap1710())
 352                         omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
 353                                      MOD_CONF_CTRL_1);
 354                 mmc2_conf = *mmc;
 355                 (void) platform_device_register(&mmc_omap_device2);
 356         }
 357 #endif
 358         return;
 359 }
 360 #else
 361 static inline void omap_init_mmc(void) {}
 362 #endif
 363
 364 /*-------------------------------------------------------------------------*/
 365
 366 /* Numbering for the SPI-capable controllers when used for SPI:
 367  * spi          = 1
 368  * uwire        = 2
 369  * mmc1..2      = 3..4
 370  * mcbsp1..3    = 5..7
 371  */
 372
 373 #if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE)
 374
 375 #define OMAP_UWIRE_BASE         0xfffb3000
 376
 377 static struct resource uwire_resources[] = {
 378         {
 379                 .start          = OMAP_UWIRE_BASE,
 380                 .end            = OMAP_UWIRE_BASE + 0x20,
 381                 .flags          = IORESOURCE_MEM,
 382         },
 383 };
 384
 385 static struct platform_device omap_uwire_device = {
 386         .name      = "omap_uwire",
 387         .id          = -1,
 388         .num_resources  = ARRAY_SIZE(uwire_resources),
 389         .resource       = uwire_resources,
 390 };
 391
 392 static void omap_init_uwire(void)
 393 {
 394         /* FIXME define and use a boot tag; not all boards will be hooking
 395          * up devices to the microwire controller, and multi-board configs
 396          * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
 397          */
 398
 399         /* board-specific code must configure chipselects (only a few
 400          * are normally used) and SCLK/SDI/SDO (each has two choices).
 401          */
 402         (void) platform_device_register(&omap_uwire_device);
 403 }
 404 #else
 405 static inline void omap_init_uwire(void) {}
 406 #endif
 407
 408 /*-------------------------------------------------------------------------*/
 409
 410 #if     defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
 411
 412 #ifdef CONFIG_ARCH_OMAP24XX
 413 #define OMAP_WDT_BASE           0x48022000
 414 #else
 415 #define OMAP_WDT_BASE           0xfffeb000
 416 #endif
 417
 418 static struct resource wdt_resources[] = {
 419         {
 420                 .start          = OMAP_WDT_BASE,
 421                 .end            = OMAP_WDT_BASE + 0x4f,
 422                 .flags          = IORESOURCE_MEM,
 423         },
 424 };
 425
 426 static struct platform_device omap_wdt_device = {
 427         .name      = "omap_wdt",
 428         .id          = -1,
 429         .num_resources  = ARRAY_SIZE(wdt_resources),
 430         .resource       = wdt_resources,
 431 };
 432
 433 static void omap_init_wdt(void)
 434 {
 435         (void) platform_device_register(&omap_wdt_device);
 436 }
 437 #else
 438 static inline void omap_init_wdt(void) {}
 439 #endif
 440
 441 /*-------------------------------------------------------------------------*/
 442
 443 #if defined(CONFIG_HW_RANDOM_OMAP) || defined(CONFIG_HW_RANDOM_OMAP_MODULE)
 444
 445 #ifdef CONFIG_ARCH_OMAP24XX
 446 #define OMAP_RNG_BASE           0x480A0000
 447 #else
 448 #define OMAP_RNG_BASE           0xfffe5000
 449 #endif
 450
 451 static struct resource rng_resources[] = {
 452         {
 453                 .start          = OMAP_RNG_BASE,
 454                 .end            = OMAP_RNG_BASE + 0x4f,
 455                 .flags          = IORESOURCE_MEM,
 456         },
 457 };
 458
 459 static struct platform_device omap_rng_device = {
 460         .name      = "omap_rng",
 461         .id          = -1,
 462         .num_resources  = ARRAY_SIZE(rng_resources),
 463         .resource       = rng_resources,
 464 };
 465
 466 static void omap_init_rng(void)
 467 {
 468         (void) platform_device_register(&omap_rng_device);
 469 }
 470 #else
 471 static inline void omap_init_rng(void) {}
 472 #endif
 473
 474 /*
 475  * This gets called after board-specific INIT_MACHINE, and initializes most
 476  * on-chip peripherals accessible on this board (except for few like USB):
 477  *
 478  *  (a) Does any "standard config" pin muxing needed.  Board-specific
 479  *      code will have muxed GPIO pins and done "nonstandard" setup;
 480  *      that code could live in the boot loader.
 481  *  (b) Populating board-specific platform_data with the data drivers
 482  *      rely on to handle wiring variations.
 483  *  (c) Creating platform devices as meaningful on this board and
 484  *      with this kernel configuration.
 485  *
 486  * Claiming GPIOs, and setting their direction and initial values, is the
 487  * responsibility of the device drivers.  So is responding to probe().
 488  *
 489  * Board-specific knowlege like creating devices or pin setup is to be
 490  * kept out of drivers as much as possible.  In particular, pin setup
 491  * may be handled by the boot loader, and drivers should expect it will
 492  * normally have been done by the time they're probed.
 493  */
 494 static int __init omap_init_devices(void)
 495 {
 496 /*
 497  * Need to enable relevant once for 2430 SDP
 498  */
 499 #ifndef CONFIG_MACH_OMAP_2430SDP
 500         /* please keep these calls, and their implementations above,
 501          * in alphabetical order so they're easier to sort through.
 502          */
 503         omap_init_dsp();
 504         omap_init_i2c();
 505         omap_init_kp();
 506         omap_init_mmc();
 507         omap_init_uwire();
 508         omap_init_wdt();
 509         omap_init_rng();
 510 #endif
 511         return 0;
 512 }
 513 arch_initcall(omap_init_devices);