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         spin_lock_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_KEYBOARD_OMAP) || defined(CONFIG_KEYBOARD_OMAP_MODULE)
  93
  94 static void omap_init_kp(void)
  95 {
  96         /* REVISIT: 2430 keypad is on TWL4030 */
  97         if (cpu_is_omap2430() || cpu_is_omap34xx())
  98                 return;
  99
 100         if (machine_is_omap_h2() || machine_is_omap_h3()) {
 101                 omap_cfg_reg(F18_1610_KBC0);
 102                 omap_cfg_reg(D20_1610_KBC1);
 103                 omap_cfg_reg(D19_1610_KBC2);
 104                 omap_cfg_reg(E18_1610_KBC3);
 105                 omap_cfg_reg(C21_1610_KBC4);
 106
 107                 omap_cfg_reg(G18_1610_KBR0);
 108                 omap_cfg_reg(F19_1610_KBR1);
 109                 omap_cfg_reg(H14_1610_KBR2);
 110                 omap_cfg_reg(E20_1610_KBR3);
 111                 omap_cfg_reg(E19_1610_KBR4);
 112                 omap_cfg_reg(N19_1610_KBR5);
 113         } else if (machine_is_omap_perseus2() || machine_is_omap_fsample()) {
 114                 omap_cfg_reg(E2_730_KBR0);
 115                 omap_cfg_reg(J7_730_KBR1);
 116                 omap_cfg_reg(E1_730_KBR2);
 117                 omap_cfg_reg(F3_730_KBR3);
 118                 omap_cfg_reg(D2_730_KBR4);
 119
 120                 omap_cfg_reg(C2_730_KBC0);
 121                 omap_cfg_reg(D3_730_KBC1);
 122                 omap_cfg_reg(E4_730_KBC2);
 123                 omap_cfg_reg(F4_730_KBC3);
 124                 omap_cfg_reg(E3_730_KBC4);
 125         } else if (machine_is_omap_h4()) {
 126                 omap_cfg_reg(T19_24XX_KBR0);
 127                 omap_cfg_reg(R19_24XX_KBR1);
 128                 omap_cfg_reg(V18_24XX_KBR2);
 129                 omap_cfg_reg(M21_24XX_KBR3);
 130                 omap_cfg_reg(E5__24XX_KBR4);
 131                 if (omap_has_menelaus()) {
 132                         omap_cfg_reg(B3__24XX_KBR5);
 133                         omap_cfg_reg(AA4_24XX_KBC2);
 134                         omap_cfg_reg(B13_24XX_KBC6);
 135                 } else {
 136                         omap_cfg_reg(M18_24XX_KBR5);
 137                         omap_cfg_reg(H19_24XX_KBC2);
 138                         omap_cfg_reg(N19_24XX_KBC6);
 139                 }
 140                 omap_cfg_reg(R20_24XX_KBC0);
 141                 omap_cfg_reg(M14_24XX_KBC1);
 142                 omap_cfg_reg(V17_24XX_KBC3);
 143                 omap_cfg_reg(P21_24XX_KBC4);
 144                 omap_cfg_reg(L14_24XX_KBC5);
 145         }
 146 }
 147 #else
 148 static inline void omap_init_kp(void) {}
 149 #endif
 150
 151 /*-------------------------------------------------------------------------*/
 152
 153 #if     defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
 154
 155 #ifdef CONFIG_ARCH_OMAP24XX
 156 #define OMAP_MMC1_BASE          0x4809c000
 157 #define OMAP_MMC1_INT           INT_24XX_MMC_IRQ
 158 #else
 159 #define OMAP_MMC1_BASE          0xfffb7800
 160 #define OMAP_MMC1_INT           INT_MMC
 161 #endif
 162 #define OMAP_MMC2_BASE          0xfffb7c00      /* omap16xx only */
 163
 164 static struct omap_mmc_conf mmc1_conf;
 165
 166 static u64 mmc1_dmamask = 0xffffffff;
 167
 168 static struct resource mmc1_resources[] = {
 169         {
 170                 .start          = OMAP_MMC1_BASE,
 171                 .end            = OMAP_MMC1_BASE + 0x7f,
 172                 .flags          = IORESOURCE_MEM,
 173         },
 174         {
 175                 .start          = OMAP_MMC1_INT,
 176                 .flags          = IORESOURCE_IRQ,
 177         },
 178 };
 179
 180 static struct platform_device mmc_omap_device1 = {
 181         .name           = "mmci-omap",
 182         .id             = 1,
 183         .dev = {
 184                 .dma_mask       = &mmc1_dmamask,
 185                 .platform_data  = &mmc1_conf,
 186         },
 187         .num_resources  = ARRAY_SIZE(mmc1_resources),
 188         .resource       = mmc1_resources,
 189 };
 190
 191 #ifdef  CONFIG_ARCH_OMAP16XX
 192
 193 static struct omap_mmc_conf mmc2_conf;
 194
 195 static u64 mmc2_dmamask = 0xffffffff;
 196
 197
 198 static struct resource mmc2_resources[] = {
 199         {
 200                 .start          = OMAP_MMC2_BASE,
 201                 .end            = OMAP_MMC2_BASE + 0x7f,
 202                 .flags          = IORESOURCE_MEM,
 203         },
 204         {
 205                 .start          = INT_1610_MMC2,
 206                 .flags          = IORESOURCE_IRQ,
 207         },
 208 };
 209
 210 static struct platform_device mmc_omap_device2 = {
 211         .name           = "mmci-omap",
 212         .id             = 2,
 213         .dev = {
 214                 .dma_mask       = &mmc2_dmamask,
 215                 .platform_data  = &mmc2_conf,
 216         },
 217         .num_resources  = ARRAY_SIZE(mmc2_resources),
 218         .resource       = mmc2_resources,
 219 };
 220 #endif
 221
 222 static void __init omap_init_mmc(void)
 223 {
 224         const struct omap_mmc_config    *mmc_conf;
 225         const struct omap_mmc_conf      *mmc;
 226
 227         /* REVISIT: 2430 has HS MMC */
 228         if (cpu_is_omap2430() || cpu_is_omap34xx())
 229                 return;
 230
 231         /* NOTE:  assumes MMC was never (wrongly) enabled */
 232         mmc_conf = omap_get_config(OMAP_TAG_MMC, struct omap_mmc_config);
 233         if (!mmc_conf)
 234                 return;
 235
 236         /* block 1 is always available and has just one pinout option */
 237         mmc = &mmc_conf->mmc[0];
 238         if (mmc->enabled) {
 239                 if (cpu_is_omap24xx()) {
 240                         omap_cfg_reg(H18_24XX_MMC_CMD);
 241                         omap_cfg_reg(H15_24XX_MMC_CLKI);
 242                         omap_cfg_reg(G19_24XX_MMC_CLKO);
 243                         omap_cfg_reg(F20_24XX_MMC_DAT0);
 244                         omap_cfg_reg(F19_24XX_MMC_DAT_DIR0);
 245                         omap_cfg_reg(G18_24XX_MMC_CMD_DIR);
 246                 } else {
 247                         omap_cfg_reg(MMC_CMD);
 248                         omap_cfg_reg(MMC_CLK);
 249                         omap_cfg_reg(MMC_DAT0);
 250                         if (cpu_is_omap1710()) {
 251                                 omap_cfg_reg(M15_1710_MMC_CLKI);
 252                                 omap_cfg_reg(P19_1710_MMC_CMDDIR);
 253                                 omap_cfg_reg(P20_1710_MMC_DATDIR0);
 254                         }
 255                 }
 256                 if (mmc->wire4) {
 257                         if (cpu_is_omap24xx()) {
 258                                 omap_cfg_reg(H14_24XX_MMC_DAT1);
 259                                 omap_cfg_reg(E19_24XX_MMC_DAT2);
 260                                 omap_cfg_reg(D19_24XX_MMC_DAT3);
 261                                 omap_cfg_reg(E20_24XX_MMC_DAT_DIR1);
 262                                 omap_cfg_reg(F18_24XX_MMC_DAT_DIR2);
 263                                 omap_cfg_reg(E18_24XX_MMC_DAT_DIR3);
 264                         } else {
 265                                 omap_cfg_reg(MMC_DAT1);
 266                                 /* NOTE:  DAT2 can be on W10 (here) or M15 */
 267                                 if (!mmc->nomux)
 268                                         omap_cfg_reg(MMC_DAT2);
 269                                 omap_cfg_reg(MMC_DAT3);
 270                         }
 271                 }
 272                 if (mmc->internal_clock) {
 273                         /*
 274                          * Use internal loop-back in MMC/SDIO
 275                          * Module Input Clock selection
 276                          */
 277                         if (cpu_is_omap24xx()) {
 278                                 u32 v = omap_readl(OMAP2_CONTROL_DEVCONF);
 279                                 v |= (1 << 24);
 280                                 omap_writel(v, OMAP2_CONTROL_DEVCONF);
 281                         }
 282                 }
 283                 mmc1_conf = *mmc;
 284                 (void) platform_device_register(&mmc_omap_device1);
 285         }
 286
 287 #ifdef  CONFIG_ARCH_OMAP16XX
 288         /* block 2 is on newer chips, and has many pinout options */
 289         mmc = &mmc_conf->mmc[1];
 290         if (mmc->enabled) {
 291                 if (!mmc->nomux) {
 292                         omap_cfg_reg(Y8_1610_MMC2_CMD);
 293                         omap_cfg_reg(Y10_1610_MMC2_CLK);
 294                         omap_cfg_reg(R18_1610_MMC2_CLKIN);
 295                         omap_cfg_reg(W8_1610_MMC2_DAT0);
 296                         if (mmc->wire4) {
 297                                 omap_cfg_reg(V8_1610_MMC2_DAT1);
 298                                 omap_cfg_reg(W15_1610_MMC2_DAT2);
 299                                 omap_cfg_reg(R10_1610_MMC2_DAT3);
 300                         }
 301
 302                         /* These are needed for the level shifter */
 303                         omap_cfg_reg(V9_1610_MMC2_CMDDIR);
 304                         omap_cfg_reg(V5_1610_MMC2_DATDIR0);
 305                         omap_cfg_reg(W19_1610_MMC2_DATDIR1);
 306                 }
 307
 308                 /* Feedback clock must be set on OMAP-1710 MMC2 */
 309                 if (cpu_is_omap1710())
 310                         omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
 311                                      MOD_CONF_CTRL_1);
 312                 mmc2_conf = *mmc;
 313                 (void) platform_device_register(&mmc_omap_device2);
 314         }
 315 #endif
 316         return;
 317 }
 318 #else
 319 static inline void omap_init_mmc(void) {}
 320 #endif
 321
 322 /*-------------------------------------------------------------------------*/
 323
 324 /* Numbering for the SPI-capable controllers when used for SPI:
 325  * spi          = 1
 326  * uwire        = 2
 327  * mmc1..2      = 3..4
 328  * mcbsp1..3    = 5..7
 329  */
 330
 331 #if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE)
 332
 333 #define OMAP_UWIRE_BASE         0xfffb3000
 334
 335 static struct resource uwire_resources[] = {
 336         {
 337                 .start          = OMAP_UWIRE_BASE,
 338                 .end            = OMAP_UWIRE_BASE + 0x20,
 339                 .flags          = IORESOURCE_MEM,
 340         },
 341 };
 342
 343 static struct platform_device omap_uwire_device = {
 344         .name      = "omap_uwire",
 345         .id          = -1,
 346         .num_resources  = ARRAY_SIZE(uwire_resources),
 347         .resource       = uwire_resources,
 348 };
 349
 350 static void omap_init_uwire(void)
 351 {
 352         /* FIXME define and use a boot tag; not all boards will be hooking
 353          * up devices to the microwire controller, and multi-board configs
 354          * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
 355          */
 356
 357         /* board-specific code must configure chipselects (only a few
 358          * are normally used) and SCLK/SDI/SDO (each has two choices).
 359          */
 360         (void) platform_device_register(&omap_uwire_device);
 361 }
 362 #else
 363 static inline void omap_init_uwire(void) {}
 364 #endif
 365
 366 /*-------------------------------------------------------------------------*/
 367
 368 #if     defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
 369
 370 #if defined(CONFIG_ARCH_OMAP34XX)
 371 #define OMAP_WDT_BASE           0x48314000
 372 #elif defined(CONFIG_ARCH_OMAP24XX)
 373
 374 #ifdef CONFIG_ARCH_OMAP2430
 375 /* WDT2 */
 376 #define OMAP_WDT_BASE           0x49016000
 377 #else
 378 #define OMAP_WDT_BASE           0x48022000
 379 #endif
 380
 381 #else
 382 #define OMAP_WDT_BASE           0xfffeb000
 383 #endif
 384
 385 static struct resource wdt_resources[] = {
 386         {
 387                 .start          = OMAP_WDT_BASE,
 388                 .end            = OMAP_WDT_BASE + 0x4f,
 389                 .flags          = IORESOURCE_MEM,
 390         },
 391 };
 392
 393 static struct platform_device omap_wdt_device = {
 394         .name      = "omap_wdt",
 395         .id          = -1,
 396         .num_resources  = ARRAY_SIZE(wdt_resources),
 397         .resource       = wdt_resources,
 398 };
 399
 400 static void omap_init_wdt(void)
 401 {
 402         (void) platform_device_register(&omap_wdt_device);
 403 }
 404 #else
 405 static inline void omap_init_wdt(void) {}
 406 #endif
 407
 408 /*-------------------------------------------------------------------------*/
 409
 410 #if defined(CONFIG_HW_RANDOM_OMAP) || defined(CONFIG_HW_RANDOM_OMAP_MODULE)
 411
 412 #ifdef CONFIG_ARCH_OMAP24XX
 413 #define OMAP_RNG_BASE           0x480A0000
 414 #else
 415 #define OMAP_RNG_BASE           0xfffe5000
 416 #endif
 417
 418 static struct resource rng_resources[] = {
 419         {
 420                 .start          = OMAP_RNG_BASE,
 421                 .end            = OMAP_RNG_BASE + 0x4f,
 422                 .flags          = IORESOURCE_MEM,
 423         },
 424 };
 425
 426 static struct platform_device omap_rng_device = {
 427         .name      = "omap_rng",
 428         .id          = -1,
 429         .num_resources  = ARRAY_SIZE(rng_resources),
 430         .resource       = rng_resources,
 431 };
 432
 433 static void omap_init_rng(void)
 434 {
 435         (void) platform_device_register(&omap_rng_device);
 436 }
 437 #else
 438 static inline void omap_init_rng(void) {}
 439 #endif
 440
 441 /*
 442  * This gets called after board-specific INIT_MACHINE, and initializes most
 443  * on-chip peripherals accessible on this board (except for few like USB):
 444  *
 445  *  (a) Does any "standard config" pin muxing needed.  Board-specific
 446  *      code will have muxed GPIO pins and done "nonstandard" setup;
 447  *      that code could live in the boot loader.
 448  *  (b) Populating board-specific platform_data with the data drivers
 449  *      rely on to handle wiring variations.
 450  *  (c) Creating platform devices as meaningful on this board and
 451  *      with this kernel configuration.
 452  *
 453  * Claiming GPIOs, and setting their direction and initial values, is the
 454  * responsibility of the device drivers.  So is responding to probe().
 455  *
 456  * Board-specific knowlege like creating devices or pin setup is to be
 457  * kept out of drivers as much as possible.  In particular, pin setup
 458  * may be handled by the boot loader, and drivers should expect it will
 459  * normally have been done by the time they're probed.
 460  */
 461 static int __init omap_init_devices(void)
 462 {
 463         /* please keep these calls, and their implementations above,
 464          * in alphabetical order so they're easier to sort through.
 465          */
 466         omap_init_dsp();
 467         omap_init_kp();
 468         omap_init_mmc();
 469         omap_init_uwire();
 470         omap_init_wdt();
 471         omap_init_rng();
 472         return 0;
 473 }
 474 arch_initcall(omap_init_devices);