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 <mach/hardware.h>
  18 #include <asm/io.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/mux.h>
  26 #include <mach/gpio.h>
  27 #include <mach/menelaus.h>
  28 #include <mach/mcbsp.h>
  29 #include <mach/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         /* 2430 and 34xx 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 #if defined(CONFIG_OMAP_MCBSP) || defined(CONFIG_OMAP_MCBSP_MODULE)
 154
 155 static struct platform_device **omap_mcbsp_devices;
 156
 157 void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
 158                                         int size)
 159 {
 160         int i;
 161
 162         if (size > OMAP_MAX_MCBSP_COUNT) {
 163                 printk(KERN_WARNING "Registered too many McBSPs platform_data."
 164                         " Using maximum (%d) available.\n",
 165                         OMAP_MAX_MCBSP_COUNT);
 166                 size = OMAP_MAX_MCBSP_COUNT;
 167         }
 168
 169         omap_mcbsp_devices = kzalloc(size * sizeof(struct platform_device *),
 170                                      GFP_KERNEL);
 171         if (!omap_mcbsp_devices) {
 172                 printk(KERN_ERR "Could not register McBSP devices\n");
 173                 return;
 174         }
 175
 176         for (i = 0; i < size; i++) {
 177                 struct platform_device *new_mcbsp;
 178                 int ret;
 179
 180                 new_mcbsp = platform_device_alloc("omap-mcbsp", i + 1);
 181                 if (!new_mcbsp)
 182                         continue;
 183                 new_mcbsp->dev.platform_data = &config[i];
 184                 ret = platform_device_add(new_mcbsp);
 185                 if (ret) {
 186                         platform_device_put(new_mcbsp);
 187                         continue;
 188                 }
 189                 omap_mcbsp_devices[i] = new_mcbsp;
 190         }
 191 }
 192
 193 #else
 194 void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
 195                                         int size)
 196 {  }
 197 #endif
 198
 199 /*-------------------------------------------------------------------------*/
 200
 201 #if     defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
 202
 203 #ifdef CONFIG_ARCH_OMAP24XX
 204 #define OMAP_MMC1_BASE          0x4809c000
 205 #define OMAP_MMC1_INT           INT_24XX_MMC_IRQ
 206 #else
 207 #define OMAP_MMC1_BASE          0xfffb7800
 208 #define OMAP_MMC1_INT           INT_MMC
 209 #endif
 210 #define OMAP_MMC2_BASE          0xfffb7c00      /* omap16xx only */
 211
 212 static struct omap_mmc_conf mmc1_conf;
 213
 214 static u64 mmc1_dmamask = 0xffffffff;
 215
 216 static struct resource mmc1_resources[] = {
 217         {
 218                 .start          = OMAP_MMC1_BASE,
 219                 .end            = OMAP_MMC1_BASE + 0x7f,
 220                 .flags          = IORESOURCE_MEM,
 221         },
 222         {
 223                 .start          = OMAP_MMC1_INT,
 224                 .flags          = IORESOURCE_IRQ,
 225         },
 226 };
 227
 228 static struct platform_device mmc_omap_device1 = {
 229         .name           = "mmci-omap",
 230         .id             = 1,
 231         .dev = {
 232                 .dma_mask       = &mmc1_dmamask,
 233                 .platform_data  = &mmc1_conf,
 234         },
 235         .num_resources  = ARRAY_SIZE(mmc1_resources),
 236         .resource       = mmc1_resources,
 237 };
 238
 239 #ifdef  CONFIG_ARCH_OMAP16XX
 240
 241 static struct omap_mmc_conf mmc2_conf;
 242
 243 static u64 mmc2_dmamask = 0xffffffff;
 244
 245 static struct resource mmc2_resources[] = {
 246         {
 247                 .start          = OMAP_MMC2_BASE,
 248                 .end            = OMAP_MMC2_BASE + 0x7f,
 249                 .flags          = IORESOURCE_MEM,
 250         },
 251         {
 252                 .start          = INT_1610_MMC2,
 253                 .flags          = IORESOURCE_IRQ,
 254         },
 255 };
 256
 257 static struct platform_device mmc_omap_device2 = {
 258         .name           = "mmci-omap",
 259         .id             = 2,
 260         .dev = {
 261                 .dma_mask       = &mmc2_dmamask,
 262                 .platform_data  = &mmc2_conf,
 263         },
 264         .num_resources  = ARRAY_SIZE(mmc2_resources),
 265         .resource       = mmc2_resources,
 266 };
 267 #endif
 268
 269 static void __init omap_init_mmc(void)
 270 {
 271         const struct omap_mmc_config    *mmc_conf;
 272         const struct omap_mmc_conf      *mmc;
 273
 274         /* NOTE:  assumes MMC was never (wrongly) enabled */
 275         mmc_conf = omap_get_config(OMAP_TAG_MMC, struct omap_mmc_config);
 276         if (!mmc_conf)
 277                 return;
 278
 279         /* block 1 is always available and has just one pinout option */
 280         mmc = &mmc_conf->mmc[0];
 281         if (mmc->enabled) {
 282                 if (cpu_is_omap24xx()) {
 283                         omap_cfg_reg(H18_24XX_MMC_CMD);
 284                         omap_cfg_reg(H15_24XX_MMC_CLKI);
 285                         omap_cfg_reg(G19_24XX_MMC_CLKO);
 286                         omap_cfg_reg(F20_24XX_MMC_DAT0);
 287                         omap_cfg_reg(F19_24XX_MMC_DAT_DIR0);
 288                         omap_cfg_reg(G18_24XX_MMC_CMD_DIR);
 289                 } else {
 290                         omap_cfg_reg(MMC_CMD);
 291                         omap_cfg_reg(MMC_CLK);
 292                         omap_cfg_reg(MMC_DAT0);
 293                         if (cpu_is_omap1710()) {
 294                                 omap_cfg_reg(M15_1710_MMC_CLKI);
 295                                 omap_cfg_reg(P19_1710_MMC_CMDDIR);
 296                                 omap_cfg_reg(P20_1710_MMC_DATDIR0);
 297                         }
 298                 }
 299                 if (mmc->wire4) {
 300                         if (cpu_is_omap24xx()) {
 301                                 omap_cfg_reg(H14_24XX_MMC_DAT1);
 302                                 omap_cfg_reg(E19_24XX_MMC_DAT2);
 303                                 omap_cfg_reg(D19_24XX_MMC_DAT3);
 304                                 omap_cfg_reg(E20_24XX_MMC_DAT_DIR1);
 305                                 omap_cfg_reg(F18_24XX_MMC_DAT_DIR2);
 306                                 omap_cfg_reg(E18_24XX_MMC_DAT_DIR3);
 307                         } else {
 308                                 omap_cfg_reg(MMC_DAT1);
 309                                 /* NOTE:  DAT2 can be on W10 (here) or M15 */
 310                                 if (!mmc->nomux)
 311                                         omap_cfg_reg(MMC_DAT2);
 312                                 omap_cfg_reg(MMC_DAT3);
 313                         }
 314                 }
 315                 mmc1_conf = *mmc;
 316                 (void) platform_device_register(&mmc_omap_device1);
 317         }
 318
 319 #ifdef  CONFIG_ARCH_OMAP16XX
 320         /* block 2 is on newer chips, and has many pinout options */
 321         mmc = &mmc_conf->mmc[1];
 322         if (mmc->enabled) {
 323                 if (!mmc->nomux) {
 324                         omap_cfg_reg(Y8_1610_MMC2_CMD);
 325                         omap_cfg_reg(Y10_1610_MMC2_CLK);
 326                         omap_cfg_reg(R18_1610_MMC2_CLKIN);
 327                         omap_cfg_reg(W8_1610_MMC2_DAT0);
 328                         if (mmc->wire4) {
 329                                 omap_cfg_reg(V8_1610_MMC2_DAT1);
 330                                 omap_cfg_reg(W15_1610_MMC2_DAT2);
 331                                 omap_cfg_reg(R10_1610_MMC2_DAT3);
 332                         }
 333
 334                         /* These are needed for the level shifter */
 335                         omap_cfg_reg(V9_1610_MMC2_CMDDIR);
 336                         omap_cfg_reg(V5_1610_MMC2_DATDIR0);
 337                         omap_cfg_reg(W19_1610_MMC2_DATDIR1);
 338                 }
 339
 340                 /* Feedback clock must be set on OMAP-1710 MMC2 */
 341                 if (cpu_is_omap1710())
 342                         omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
 343                                      MOD_CONF_CTRL_1);
 344                 mmc2_conf = *mmc;
 345                 (void) platform_device_register(&mmc_omap_device2);
 346         }
 347 #endif
 348         return;
 349 }
 350 #else
 351 static inline void omap_init_mmc(void) {}
 352 #endif
 353
 354 /*-------------------------------------------------------------------------*/
 355
 356 /* Numbering for the SPI-capable controllers when used for SPI:
 357  * spi          = 1
 358  * uwire        = 2
 359  * mmc1..2      = 3..4
 360  * mcbsp1..3    = 5..7
 361  */
 362
 363 #if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE)
 364
 365 #define OMAP_UWIRE_BASE         0xfffb3000
 366
 367 static struct resource uwire_resources[] = {
 368         {
 369                 .start          = OMAP_UWIRE_BASE,
 370                 .end            = OMAP_UWIRE_BASE + 0x20,
 371                 .flags          = IORESOURCE_MEM,
 372         },
 373 };
 374
 375 static struct platform_device omap_uwire_device = {
 376         .name      = "omap_uwire",
 377         .id          = -1,
 378         .num_resources  = ARRAY_SIZE(uwire_resources),
 379         .resource       = uwire_resources,
 380 };
 381
 382 static void omap_init_uwire(void)
 383 {
 384         /* FIXME define and use a boot tag; not all boards will be hooking
 385          * up devices to the microwire controller, and multi-board configs
 386          * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
 387          */
 388
 389         /* board-specific code must configure chipselects (only a few
 390          * are normally used) and SCLK/SDI/SDO (each has two choices).
 391          */
 392         (void) platform_device_register(&omap_uwire_device);
 393 }
 394 #else
 395 static inline void omap_init_uwire(void) {}
 396 #endif
 397
 398 /*-------------------------------------------------------------------------*/
 399
 400 #if     defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
 401
 402 #if defined(CONFIG_ARCH_OMAP34XX)
 403 #define OMAP_WDT_BASE           0x48314000
 404 #elif defined(CONFIG_ARCH_OMAP24XX)
 405
 406 #ifdef CONFIG_ARCH_OMAP2430
 407 /* WDT2 */
 408 #define OMAP_WDT_BASE           0x49016000
 409 #else
 410 #define OMAP_WDT_BASE           0x48022000
 411 #endif
 412
 413 #else
 414 #define OMAP_WDT_BASE           0xfffeb000
 415 #endif
 416
 417 static struct resource wdt_resources[] = {
 418         {
 419                 .start          = OMAP_WDT_BASE,
 420                 .end            = OMAP_WDT_BASE + 0x4f,
 421                 .flags          = IORESOURCE_MEM,
 422         },
 423 };
 424
 425 static struct platform_device omap_wdt_device = {
 426         .name      = "omap_wdt",
 427         .id          = -1,
 428         .num_resources  = ARRAY_SIZE(wdt_resources),
 429         .resource       = wdt_resources,
 430 };
 431
 432 static void omap_init_wdt(void)
 433 {
 434         (void) platform_device_register(&omap_wdt_device);
 435 }
 436 #else
 437 static inline void omap_init_wdt(void) {}
 438 #endif
 439
 440 /*-------------------------------------------------------------------------*/
 441
 442 #if defined(CONFIG_HW_RANDOM_OMAP) || defined(CONFIG_HW_RANDOM_OMAP_MODULE)
 443
 444 #ifdef CONFIG_ARCH_OMAP24XX
 445 #define OMAP_RNG_BASE           0x480A0000
 446 #else
 447 #define OMAP_RNG_BASE           0xfffe5000
 448 #endif
 449
 450 static struct resource rng_resources[] = {
 451         {
 452                 .start          = OMAP_RNG_BASE,
 453                 .end            = OMAP_RNG_BASE + 0x4f,
 454                 .flags          = IORESOURCE_MEM,
 455         },
 456 };
 457
 458 static struct platform_device omap_rng_device = {
 459         .name      = "omap_rng",
 460         .id          = -1,
 461         .num_resources  = ARRAY_SIZE(rng_resources),
 462         .resource       = rng_resources,
 463 };
 464
 465 static void omap_init_rng(void)
 466 {
 467         (void) platform_device_register(&omap_rng_device);
 468 }
 469 #else
 470 static inline void omap_init_rng(void) {}
 471 #endif
 472
 473 /*
 474  * This gets called after board-specific INIT_MACHINE, and initializes most
 475  * on-chip peripherals accessible on this board (except for few like USB):
 476  *
 477  *  (a) Does any "standard config" pin muxing needed.  Board-specific
 478  *      code will have muxed GPIO pins and done "nonstandard" setup;
 479  *      that code could live in the boot loader.
 480  *  (b) Populating board-specific platform_data with the data drivers
 481  *      rely on to handle wiring variations.
 482  *  (c) Creating platform devices as meaningful on this board and
 483  *      with this kernel configuration.
 484  *
 485  * Claiming GPIOs, and setting their direction and initial values, is the
 486  * responsibility of the device drivers.  So is responding to probe().
 487  *
 488  * Board-specific knowlege like creating devices or pin setup is to be
 489  * kept out of drivers as much as possible.  In particular, pin setup
 490  * may be handled by the boot loader, and drivers should expect it will
 491  * normally have been done by the time they're probed.
 492  */
 493 static int __init omap_init_devices(void)
 494 {
 495         /* please keep these calls, and their implementations above,
 496          * in alphabetical order so they're easier to sort through.
 497          */
 498         omap_init_dsp();
 499         omap_init_kp();
 500         omap_init_mmc();
 501         omap_init_uwire();
 502         omap_init_wdt();
 503         omap_init_rng();
 504         return 0;
 505 }
 506 arch_initcall(omap_init_devices);