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_KEYBOARD_OMAP) || defined(CONFIG_KEYBOARD_OMAP_MODULE)
  93
  94 static void omap_init_kp(void)
  95 {
  96         if (machine_is_omap_h2() || machine_is_omap_h3()) {
  97                 omap_cfg_reg(F18_1610_KBC0);
  98                 omap_cfg_reg(D20_1610_KBC1);
  99                 omap_cfg_reg(D19_1610_KBC2);
 100                 omap_cfg_reg(E18_1610_KBC3);
 101                 omap_cfg_reg(C21_1610_KBC4);
 102
 103                 omap_cfg_reg(G18_1610_KBR0);
 104                 omap_cfg_reg(F19_1610_KBR1);
 105                 omap_cfg_reg(H14_1610_KBR2);
 106                 omap_cfg_reg(E20_1610_KBR3);
 107                 omap_cfg_reg(E19_1610_KBR4);
 108                 omap_cfg_reg(N19_1610_KBR5);
 109         } else if (machine_is_omap_perseus2() || machine_is_omap_fsample()) {
 110                 omap_cfg_reg(E2_730_KBR0);
 111                 omap_cfg_reg(J7_730_KBR1);
 112                 omap_cfg_reg(E1_730_KBR2);
 113                 omap_cfg_reg(F3_730_KBR3);
 114                 omap_cfg_reg(D2_730_KBR4);
 115
 116                 omap_cfg_reg(C2_730_KBC0);
 117                 omap_cfg_reg(D3_730_KBC1);
 118                 omap_cfg_reg(E4_730_KBC2);
 119                 omap_cfg_reg(F4_730_KBC3);
 120                 omap_cfg_reg(E3_730_KBC4);
 121         } else if (machine_is_omap_h4()) {
 122                 omap_cfg_reg(T19_24XX_KBR0);
 123                 omap_cfg_reg(R19_24XX_KBR1);
 124                 omap_cfg_reg(V18_24XX_KBR2);
 125                 omap_cfg_reg(M21_24XX_KBR3);
 126                 omap_cfg_reg(E5__24XX_KBR4);
 127                 if (omap_has_menelaus()) {
 128                         omap_cfg_reg(B3__24XX_KBR5);
 129                         omap_cfg_reg(AA4_24XX_KBC2);
 130                         omap_cfg_reg(B13_24XX_KBC6);
 131                 } else {
 132                         omap_cfg_reg(M18_24XX_KBR5);
 133                         omap_cfg_reg(H19_24XX_KBC2);
 134                         omap_cfg_reg(N19_24XX_KBC6);
 135                 }
 136                 omap_cfg_reg(R20_24XX_KBC0);
 137                 omap_cfg_reg(M14_24XX_KBC1);
 138                 omap_cfg_reg(V17_24XX_KBC3);
 139                 omap_cfg_reg(P21_24XX_KBC4);
 140                 omap_cfg_reg(L14_24XX_KBC5);
 141         }
 142 }
 143 #else
 144 static inline void omap_init_kp(void) {}
 145 #endif
 146
 147 /*-------------------------------------------------------------------------*/
 148
 149 #if     defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
 150
 151 #ifdef CONFIG_ARCH_OMAP24XX
 152 #define OMAP_MMC1_BASE          0x4809c000
 153 #define OMAP_MMC1_INT           INT_24XX_MMC_IRQ
 154 #else
 155 #define OMAP_MMC1_BASE          0xfffb7800
 156 #define OMAP_MMC1_INT           INT_MMC
 157 #endif
 158 #define OMAP_MMC2_BASE          0xfffb7c00      /* omap16xx only */
 159
 160 static struct omap_mmc_conf mmc1_conf;
 161
 162 static u64 mmc1_dmamask = 0xffffffff;
 163
 164 static struct resource mmc1_resources[] = {
 165         {
 166                 .start          = OMAP_MMC1_BASE,
 167                 .end            = OMAP_MMC1_BASE + 0x7f,
 168                 .flags          = IORESOURCE_MEM,
 169         },
 170         {
 171                 .start          = OMAP_MMC1_INT,
 172                 .flags          = IORESOURCE_IRQ,
 173         },
 174 };
 175
 176 static struct platform_device mmc_omap_device1 = {
 177         .name           = "mmci-omap",
 178         .id             = 1,
 179         .dev = {
 180                 .dma_mask       = &mmc1_dmamask,
 181                 .platform_data  = &mmc1_conf,
 182         },
 183         .num_resources  = ARRAY_SIZE(mmc1_resources),
 184         .resource       = mmc1_resources,
 185 };
 186
 187 #ifdef  CONFIG_ARCH_OMAP16XX
 188
 189 static struct omap_mmc_conf mmc2_conf;
 190
 191 static u64 mmc2_dmamask = 0xffffffff;
 192
 193 static struct resource mmc2_resources[] = {
 194         {
 195                 .start          = OMAP_MMC2_BASE,
 196                 .end            = OMAP_MMC2_BASE + 0x7f,
 197                 .flags          = IORESOURCE_MEM,
 198         },
 199         {
 200                 .start          = INT_1610_MMC2,
 201                 .flags          = IORESOURCE_IRQ,
 202         },
 203 };
 204
 205 static struct platform_device mmc_omap_device2 = {
 206         .name           = "mmci-omap",
 207         .id             = 2,
 208         .dev = {
 209                 .dma_mask       = &mmc2_dmamask,
 210                 .platform_data  = &mmc2_conf,
 211         },
 212         .num_resources  = ARRAY_SIZE(mmc2_resources),
 213         .resource       = mmc2_resources,
 214 };
 215 #endif
 216
 217 static void __init omap_init_mmc(void)
 218 {
 219         const struct omap_mmc_config    *mmc_conf;
 220         const struct omap_mmc_conf      *mmc;
 221
 222         /* NOTE:  assumes MMC was never (wrongly) enabled */
 223         mmc_conf = omap_get_config(OMAP_TAG_MMC, struct omap_mmc_config);
 224         if (!mmc_conf)
 225                 return;
 226
 227         /* block 1 is always available and has just one pinout option */
 228         mmc = &mmc_conf->mmc[0];
 229         if (mmc->enabled) {
 230                 if (cpu_is_omap24xx()) {
 231                         omap_cfg_reg(H18_24XX_MMC_CMD);
 232                         omap_cfg_reg(H15_24XX_MMC_CLKI);
 233                         omap_cfg_reg(G19_24XX_MMC_CLKO);
 234                         omap_cfg_reg(F20_24XX_MMC_DAT0);
 235                         omap_cfg_reg(F19_24XX_MMC_DAT_DIR0);
 236                         omap_cfg_reg(G18_24XX_MMC_CMD_DIR);
 237                 } else {
 238                         omap_cfg_reg(MMC_CMD);
 239                         omap_cfg_reg(MMC_CLK);
 240                         omap_cfg_reg(MMC_DAT0);
 241                         if (cpu_is_omap1710()) {
 242                                 omap_cfg_reg(M15_1710_MMC_CLKI);
 243                                 omap_cfg_reg(P19_1710_MMC_CMDDIR);
 244                                 omap_cfg_reg(P20_1710_MMC_DATDIR0);
 245                         }
 246                 }
 247                 if (mmc->wire4) {
 248                         if (cpu_is_omap24xx()) {
 249                                 omap_cfg_reg(H14_24XX_MMC_DAT1);
 250                                 omap_cfg_reg(E19_24XX_MMC_DAT2);
 251                                 omap_cfg_reg(D19_24XX_MMC_DAT3);
 252                                 omap_cfg_reg(E20_24XX_MMC_DAT_DIR1);
 253                                 omap_cfg_reg(F18_24XX_MMC_DAT_DIR2);
 254                                 omap_cfg_reg(E18_24XX_MMC_DAT_DIR3);
 255                         } else {
 256                                 omap_cfg_reg(MMC_DAT1);
 257                                 /* NOTE:  DAT2 can be on W10 (here) or M15 */
 258                                 if (!mmc->nomux)
 259                                         omap_cfg_reg(MMC_DAT2);
 260                                 omap_cfg_reg(MMC_DAT3);
 261                         }
 262                 }
 263                 mmc1_conf = *mmc;
 264                 (void) platform_device_register(&mmc_omap_device1);
 265         }
 266
 267 #ifdef  CONFIG_ARCH_OMAP16XX
 268         /* block 2 is on newer chips, and has many pinout options */
 269         mmc = &mmc_conf->mmc[1];
 270         if (mmc->enabled) {
 271                 if (!mmc->nomux) {
 272                         omap_cfg_reg(Y8_1610_MMC2_CMD);
 273                         omap_cfg_reg(Y10_1610_MMC2_CLK);
 274                         omap_cfg_reg(R18_1610_MMC2_CLKIN);
 275                         omap_cfg_reg(W8_1610_MMC2_DAT0);
 276                         if (mmc->wire4) {
 277                                 omap_cfg_reg(V8_1610_MMC2_DAT1);
 278                                 omap_cfg_reg(W15_1610_MMC2_DAT2);
 279                                 omap_cfg_reg(R10_1610_MMC2_DAT3);
 280                         }
 281
 282                         /* These are needed for the level shifter */
 283                         omap_cfg_reg(V9_1610_MMC2_CMDDIR);
 284                         omap_cfg_reg(V5_1610_MMC2_DATDIR0);
 285                         omap_cfg_reg(W19_1610_MMC2_DATDIR1);
 286                 }
 287
 288                 /* Feedback clock must be set on OMAP-1710 MMC2 */
 289                 if (cpu_is_omap1710())
 290                         omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
 291                                      MOD_CONF_CTRL_1);
 292                 mmc2_conf = *mmc;
 293                 (void) platform_device_register(&mmc_omap_device2);
 294         }
 295 #endif
 296         return;
 297 }
 298 #else
 299 static inline void omap_init_mmc(void) {}
 300 #endif
 301
 302 /*-------------------------------------------------------------------------*/
 303
 304 /* Numbering for the SPI-capable controllers when used for SPI:
 305  * spi          = 1
 306  * uwire        = 2
 307  * mmc1..2      = 3..4
 308  * mcbsp1..3    = 5..7
 309  */
 310
 311 #if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE)
 312
 313 #define OMAP_UWIRE_BASE         0xfffb3000
 314
 315 static struct resource uwire_resources[] = {
 316         {
 317                 .start          = OMAP_UWIRE_BASE,
 318                 .end            = OMAP_UWIRE_BASE + 0x20,
 319                 .flags          = IORESOURCE_MEM,
 320         },
 321 };
 322
 323 static struct platform_device omap_uwire_device = {
 324         .name      = "omap_uwire",
 325         .id          = -1,
 326         .num_resources  = ARRAY_SIZE(uwire_resources),
 327         .resource       = uwire_resources,
 328 };
 329
 330 static void omap_init_uwire(void)
 331 {
 332         /* FIXME define and use a boot tag; not all boards will be hooking
 333          * up devices to the microwire controller, and multi-board configs
 334          * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
 335          */
 336
 337         /* board-specific code must configure chipselects (only a few
 338          * are normally used) and SCLK/SDI/SDO (each has two choices).
 339          */
 340         (void) platform_device_register(&omap_uwire_device);
 341 }
 342 #else
 343 static inline void omap_init_uwire(void) {}
 344 #endif
 345
 346 /*-------------------------------------------------------------------------*/
 347
 348 #if     defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
 349
 350 #ifdef CONFIG_ARCH_OMAP24XX
 351 #define OMAP_WDT_BASE           0x48022000
 352 #else
 353 #define OMAP_WDT_BASE           0xfffeb000
 354 #endif
 355
 356 static struct resource wdt_resources[] = {
 357         {
 358                 .start          = OMAP_WDT_BASE,
 359                 .end            = OMAP_WDT_BASE + 0x4f,
 360                 .flags          = IORESOURCE_MEM,
 361         },
 362 };
 363
 364 static struct platform_device omap_wdt_device = {
 365         .name      = "omap_wdt",
 366         .id          = -1,
 367         .num_resources  = ARRAY_SIZE(wdt_resources),
 368         .resource       = wdt_resources,
 369 };
 370
 371 static void omap_init_wdt(void)
 372 {
 373         (void) platform_device_register(&omap_wdt_device);
 374 }
 375 #else
 376 static inline void omap_init_wdt(void) {}
 377 #endif
 378
 379 /*-------------------------------------------------------------------------*/
 380
 381 #if defined(CONFIG_HW_RANDOM_OMAP) || defined(CONFIG_HW_RANDOM_OMAP_MODULE)
 382
 383 #ifdef CONFIG_ARCH_OMAP24XX
 384 #define OMAP_RNG_BASE           0x480A0000
 385 #else
 386 #define OMAP_RNG_BASE           0xfffe5000
 387 #endif
 388
 389 static struct resource rng_resources[] = {
 390         {
 391                 .start          = OMAP_RNG_BASE,
 392                 .end            = OMAP_RNG_BASE + 0x4f,
 393                 .flags          = IORESOURCE_MEM,
 394         },
 395 };
 396
 397 static struct platform_device omap_rng_device = {
 398         .name      = "omap_rng",
 399         .id          = -1,
 400         .num_resources  = ARRAY_SIZE(rng_resources),
 401         .resource       = rng_resources,
 402 };
 403
 404 static void omap_init_rng(void)
 405 {
 406         (void) platform_device_register(&omap_rng_device);
 407 }
 408 #else
 409 static inline void omap_init_rng(void) {}
 410 #endif
 411
 412 /*
 413  * This gets called after board-specific INIT_MACHINE, and initializes most
 414  * on-chip peripherals accessible on this board (except for few like USB):
 415  *
 416  *  (a) Does any "standard config" pin muxing needed.  Board-specific
 417  *      code will have muxed GPIO pins and done "nonstandard" setup;
 418  *      that code could live in the boot loader.
 419  *  (b) Populating board-specific platform_data with the data drivers
 420  *      rely on to handle wiring variations.
 421  *  (c) Creating platform devices as meaningful on this board and
 422  *      with this kernel configuration.
 423  *
 424  * Claiming GPIOs, and setting their direction and initial values, is the
 425  * responsibility of the device drivers.  So is responding to probe().
 426  *
 427  * Board-specific knowlege like creating devices or pin setup is to be
 428  * kept out of drivers as much as possible.  In particular, pin setup
 429  * may be handled by the boot loader, and drivers should expect it will
 430  * normally have been done by the time they're probed.
 431  */
 432 static int __init omap_init_devices(void)
 433 {
 434 /*
 435  * Need to enable relevant once for 2430 SDP
 436  */
 437 #ifndef CONFIG_MACH_OMAP_2430SDP
 438         /* please keep these calls, and their implementations above,
 439          * in alphabetical order so they're easier to sort through.
 440          */
 441         omap_init_dsp();
 442         omap_init_kp();
 443         omap_init_mmc();
 444         omap_init_uwire();
 445         omap_init_wdt();
 446         omap_init_rng();
 447 #endif
 448         return 0;
 449 }
 450 arch_initcall(omap_init_devices);