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/mmc.h>
  25 #include <asm/arch/mux.h>
  26 #include <asm/arch/gpio.h>
  27 #include <asm/arch/menelaus.h>
  28 #include <asm/arch/dsp_common.h>
  29
  30 #if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
  31 # include "../mach-omap2/control.h"
  32 #endif
  33
  34 #if     defined(CONFIG_OMAP_DSP) || defined(CONFIG_OMAP_DSP_MODULE)
  35
  36 static struct dsp_platform_data dsp_pdata = {
  37         .kdev_list = LIST_HEAD_INIT(dsp_pdata.kdev_list),
  38 };
  39
  40 static struct resource omap_dsp_resources[] = {
  41         {
  42                 .name   = "dsp_mmu",
  43                 .start  = -1,
  44                 .flags  = IORESOURCE_IRQ,
  45         },
  46 };
  47
  48 static struct platform_device omap_dsp_device = {
  49         .name           = "dsp",
  50         .id             = -1,
  51         .num_resources  = ARRAY_SIZE(omap_dsp_resources),
  52         .resource       = omap_dsp_resources,
  53         .dev = {
  54                 .platform_data = &dsp_pdata,
  55         },
  56 };
  57
  58 static inline void omap_init_dsp(void)
  59 {
  60         struct resource *res;
  61         int irq;
  62
  63         if (cpu_is_omap15xx())
  64                 irq = INT_1510_DSP_MMU;
  65         else if (cpu_is_omap16xx())
  66                 irq = INT_1610_DSP_MMU;
  67         else if (cpu_is_omap24xx())
  68                 irq = INT_24XX_DSP_MMU;
  69
  70         res = platform_get_resource_byname(&omap_dsp_device,
  71                                            IORESOURCE_IRQ, "dsp_mmu");
  72         res->start = irq;
  73
  74         platform_device_register(&omap_dsp_device);
  75 }
  76
  77 int dsp_kfunc_device_register(struct dsp_kfunc_device *kdev)
  78 {
  79         static DEFINE_MUTEX(dsp_pdata_lock);
  80
  81         spin_lock_init(&kdev->lock);
  82
  83         mutex_lock(&dsp_pdata_lock);
  84         list_add_tail(&kdev->entry, &dsp_pdata.kdev_list);
  85         mutex_unlock(&dsp_pdata_lock);
  86
  87         return 0;
  88 }
  89 EXPORT_SYMBOL(dsp_kfunc_device_register);
  90
  91 #else
  92 static inline void omap_init_dsp(void) { }
  93 #endif  /* CONFIG_OMAP_DSP */
  94
  95 /*-------------------------------------------------------------------------*/
  96 #if     defined(CONFIG_KEYBOARD_OMAP) || defined(CONFIG_KEYBOARD_OMAP_MODULE)
  97
  98 static void omap_init_kp(void)
  99 {
 100         /* REVISIT: 2430 keypad is on TWL4030 */
 101         if (cpu_is_omap2430() || cpu_is_omap34xx())
 102                 return;
 103
 104         if (machine_is_omap_h2() || machine_is_omap_h3()) {
 105                 omap_cfg_reg(F18_1610_KBC0);
 106                 omap_cfg_reg(D20_1610_KBC1);
 107                 omap_cfg_reg(D19_1610_KBC2);
 108                 omap_cfg_reg(E18_1610_KBC3);
 109                 omap_cfg_reg(C21_1610_KBC4);
 110
 111                 omap_cfg_reg(G18_1610_KBR0);
 112                 omap_cfg_reg(F19_1610_KBR1);
 113                 omap_cfg_reg(H14_1610_KBR2);
 114                 omap_cfg_reg(E20_1610_KBR3);
 115                 omap_cfg_reg(E19_1610_KBR4);
 116                 omap_cfg_reg(N19_1610_KBR5);
 117         } else if (machine_is_omap_perseus2() || machine_is_omap_fsample()) {
 118                 omap_cfg_reg(E2_730_KBR0);
 119                 omap_cfg_reg(J7_730_KBR1);
 120                 omap_cfg_reg(E1_730_KBR2);
 121                 omap_cfg_reg(F3_730_KBR3);
 122                 omap_cfg_reg(D2_730_KBR4);
 123
 124                 omap_cfg_reg(C2_730_KBC0);
 125                 omap_cfg_reg(D3_730_KBC1);
 126                 omap_cfg_reg(E4_730_KBC2);
 127                 omap_cfg_reg(F4_730_KBC3);
 128                 omap_cfg_reg(E3_730_KBC4);
 129         } else if (machine_is_omap_h4()) {
 130                 omap_cfg_reg(T19_24XX_KBR0);
 131                 omap_cfg_reg(R19_24XX_KBR1);
 132                 omap_cfg_reg(V18_24XX_KBR2);
 133                 omap_cfg_reg(M21_24XX_KBR3);
 134                 omap_cfg_reg(E5__24XX_KBR4);
 135                 if (omap_has_menelaus()) {
 136                         omap_cfg_reg(B3__24XX_KBR5);
 137                         omap_cfg_reg(AA4_24XX_KBC2);
 138                         omap_cfg_reg(B13_24XX_KBC6);
 139                 } else {
 140                         omap_cfg_reg(M18_24XX_KBR5);
 141                         omap_cfg_reg(H19_24XX_KBC2);
 142                         omap_cfg_reg(N19_24XX_KBC6);
 143                 }
 144                 omap_cfg_reg(R20_24XX_KBC0);
 145                 omap_cfg_reg(M14_24XX_KBC1);
 146                 omap_cfg_reg(V17_24XX_KBC3);
 147                 omap_cfg_reg(P21_24XX_KBC4);
 148                 omap_cfg_reg(L14_24XX_KBC5);
 149         }
 150 }
 151 #else
 152 static inline void omap_init_kp(void) {}
 153 #endif
 154
 155 /*-------------------------------------------------------------------------*/
 156
 157 #if     defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
 158
 159 #ifdef CONFIG_ARCH_OMAP24XX
 160 #define OMAP_MMC1_BASE          0x4809c000
 161 #define OMAP_MMC1_INT           INT_24XX_MMC_IRQ
 162 #else
 163 #define OMAP_MMC1_BASE          0xfffb7800
 164 #define OMAP_MMC1_INT           INT_MMC
 165 #endif
 166 #define OMAP_MMC2_BASE          0xfffb7c00      /* omap16xx only */
 167
 168 static struct omap_mmc_platform_data mmc1_data;
 169
 170 static u64 mmc1_dmamask = 0xffffffff;
 171
 172 static struct resource mmc1_resources[] = {
 173         {
 174                 .start          = OMAP_MMC1_BASE,
 175                 .end            = OMAP_MMC1_BASE + 0x7f,
 176                 .flags          = IORESOURCE_MEM,
 177         },
 178         {
 179                 .start          = OMAP_MMC1_INT,
 180                 .flags          = IORESOURCE_IRQ,
 181         },
 182 };
 183
 184 static struct platform_device mmc_omap_device1 = {
 185         .name           = "mmci-omap",
 186         .id             = 1,
 187         .dev = {
 188                 .dma_mask       = &mmc1_dmamask,
 189                 .platform_data  = &mmc1_data,
 190         },
 191         .num_resources  = ARRAY_SIZE(mmc1_resources),
 192         .resource       = mmc1_resources,
 193 };
 194
 195 #ifdef  CONFIG_ARCH_OMAP16XX
 196
 197 static struct omap_mmc_platform_data mmc2_data;
 198
 199 static u64 mmc2_dmamask = 0xffffffff;
 200
 201
 202 static struct resource mmc2_resources[] = {
 203         {
 204                 .start          = OMAP_MMC2_BASE,
 205                 .end            = OMAP_MMC2_BASE + 0x7f,
 206                 .flags          = IORESOURCE_MEM,
 207         },
 208         {
 209                 .start          = INT_1610_MMC2,
 210                 .flags          = IORESOURCE_IRQ,
 211         },
 212 };
 213
 214 static struct platform_device mmc_omap_device2 = {
 215         .name           = "mmci-omap",
 216         .id             = 2,
 217         .dev = {
 218                 .dma_mask       = &mmc2_dmamask,
 219                 .platform_data  = &mmc2_data,
 220         },
 221         .num_resources  = ARRAY_SIZE(mmc2_resources),
 222         .resource       = mmc2_resources,
 223 };
 224 #endif
 225
 226 static void __init omap_init_mmc(void)
 227 {
 228         const struct omap_mmc_config    *mmc_conf;
 229         const struct omap_mmc_conf      *mmc;
 230
 231         /* REVISIT: 2430 has HS MMC */
 232         if (cpu_is_omap2430() || cpu_is_omap34xx())
 233                 return;
 234
 235         /* NOTE:  assumes MMC was never (wrongly) enabled */
 236         mmc_conf = omap_get_config(OMAP_TAG_MMC, struct omap_mmc_config);
 237         if (!mmc_conf)
 238                 return;
 239
 240         /* block 1 is always available and has just one pinout option */
 241         mmc = &mmc_conf->mmc[0];
 242         if (mmc->enabled) {
 243                 if (cpu_is_omap24xx()) {
 244                         omap_cfg_reg(H18_24XX_MMC_CMD);
 245                         omap_cfg_reg(H15_24XX_MMC_CLKI);
 246                         omap_cfg_reg(G19_24XX_MMC_CLKO);
 247                         omap_cfg_reg(F20_24XX_MMC_DAT0);
 248                         omap_cfg_reg(F19_24XX_MMC_DAT_DIR0);
 249                         omap_cfg_reg(G18_24XX_MMC_CMD_DIR);
 250                 } else {
 251                         omap_cfg_reg(MMC_CMD);
 252                         omap_cfg_reg(MMC_CLK);
 253                         omap_cfg_reg(MMC_DAT0);
 254                         if (cpu_is_omap1710()) {
 255                                 omap_cfg_reg(M15_1710_MMC_CLKI);
 256                                 omap_cfg_reg(P19_1710_MMC_CMDDIR);
 257                                 omap_cfg_reg(P20_1710_MMC_DATDIR0);
 258                         }
 259                 }
 260                 if (mmc->wire4) {
 261                         if (cpu_is_omap24xx()) {
 262                                 omap_cfg_reg(H14_24XX_MMC_DAT1);
 263                                 omap_cfg_reg(E19_24XX_MMC_DAT2);
 264                                 omap_cfg_reg(D19_24XX_MMC_DAT3);
 265                                 omap_cfg_reg(E20_24XX_MMC_DAT_DIR1);
 266                                 omap_cfg_reg(F18_24XX_MMC_DAT_DIR2);
 267                                 omap_cfg_reg(E18_24XX_MMC_DAT_DIR3);
 268                         } else {
 269                                 omap_cfg_reg(MMC_DAT1);
 270                                 /* NOTE:  DAT2 can be on W10 (here) or M15 */
 271                                 if (!mmc->nomux)
 272                                         omap_cfg_reg(MMC_DAT2);
 273                                 omap_cfg_reg(MMC_DAT3);
 274                         }
 275                 }
 276 #if defined(CONFIG_ARCH_OMAP2420)
 277                 if (mmc->internal_clock) {
 278                         /*
 279                          * Use internal loop-back in MMC/SDIO
 280                          * Module Input Clock selection
 281                          */
 282                         if (cpu_is_omap24xx()) {
 283                                 u32 v = ctrl_read_reg(OMAP2_CONTROL_DEVCONF0);
 284                                 v |= (1 << 24); /* not used in 243x */
 285                                 ctrl_write_reg(v, OMAP2_CONTROL_DEVCONF0);
 286                         }
 287                 }
 288 #endif
 289                 mmc1_data.conf = *mmc;
 290                 (void) platform_device_register(&mmc_omap_device1);
 291         }
 292
 293 #ifdef  CONFIG_ARCH_OMAP16XX
 294         /* block 2 is on newer chips, and has many pinout options */
 295         mmc = &mmc_conf->mmc[1];
 296         if (mmc->enabled) {
 297                 if (!mmc->nomux) {
 298                         omap_cfg_reg(Y8_1610_MMC2_CMD);
 299                         omap_cfg_reg(Y10_1610_MMC2_CLK);
 300                         omap_cfg_reg(R18_1610_MMC2_CLKIN);
 301                         omap_cfg_reg(W8_1610_MMC2_DAT0);
 302                         if (mmc->wire4) {
 303                                 omap_cfg_reg(V8_1610_MMC2_DAT1);
 304                                 omap_cfg_reg(W15_1610_MMC2_DAT2);
 305                                 omap_cfg_reg(R10_1610_MMC2_DAT3);
 306                         }
 307
 308                         /* These are needed for the level shifter */
 309                         omap_cfg_reg(V9_1610_MMC2_CMDDIR);
 310                         omap_cfg_reg(V5_1610_MMC2_DATDIR0);
 311                         omap_cfg_reg(W19_1610_MMC2_DATDIR1);
 312                 }
 313
 314                 /* Feedback clock must be set on OMAP-1710 MMC2 */
 315                 if (cpu_is_omap1710())
 316                         omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
 317                                      MOD_CONF_CTRL_1);
 318                 mmc2_data.conf = *mmc;
 319                 (void) platform_device_register(&mmc_omap_device2);
 320         }
 321 #endif
 322         return;
 323 }
 324
 325 void omap_set_mmc_info(int host, const struct omap_mmc_platform_data *info)
 326 {
 327         switch (host) {
 328         case 1:
 329                 mmc1_data = *info;
 330                 break;
 331 #ifdef CONFIG_ARCH_OMAP16XX
 332         case 2:
 333                 mmc2_data = *info;
 334                 break;
 335 #endif
 336         default:
 337                 BUG();
 338         }
 339 }
 340
 341 #else
 342 static inline void omap_init_mmc(void) {}
 343 #endif
 344
 345 /*-------------------------------------------------------------------------*/
 346
 347 /* Numbering for the SPI-capable controllers when used for SPI:
 348  * spi          = 1
 349  * uwire        = 2
 350  * mmc1..2      = 3..4
 351  * mcbsp1..3    = 5..7
 352  */
 353
 354 #if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE)
 355
 356 #define OMAP_UWIRE_BASE         0xfffb3000
 357
 358 static struct resource uwire_resources[] = {
 359         {
 360                 .start          = OMAP_UWIRE_BASE,
 361                 .end            = OMAP_UWIRE_BASE + 0x20,
 362                 .flags          = IORESOURCE_MEM,
 363         },
 364 };
 365
 366 static struct platform_device omap_uwire_device = {
 367         .name      = "omap_uwire",
 368         .id          = -1,
 369         .num_resources  = ARRAY_SIZE(uwire_resources),
 370         .resource       = uwire_resources,
 371 };
 372
 373 static void omap_init_uwire(void)
 374 {
 375         /* FIXME define and use a boot tag; not all boards will be hooking
 376          * up devices to the microwire controller, and multi-board configs
 377          * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
 378          */
 379
 380         /* board-specific code must configure chipselects (only a few
 381          * are normally used) and SCLK/SDI/SDO (each has two choices).
 382          */
 383         (void) platform_device_register(&omap_uwire_device);
 384 }
 385 #else
 386 static inline void omap_init_uwire(void) {}
 387 #endif
 388
 389 /*-------------------------------------------------------------------------*/
 390
 391 #if     defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
 392
 393 #if defined(CONFIG_ARCH_OMAP34XX)
 394 #define OMAP_WDT_BASE           0x48314000
 395 #elif defined(CONFIG_ARCH_OMAP24XX)
 396
 397 #ifdef CONFIG_ARCH_OMAP2430
 398 /* WDT2 */
 399 #define OMAP_WDT_BASE           0x49016000
 400 #else
 401 #define OMAP_WDT_BASE           0x48022000
 402 #endif
 403
 404 #else
 405 #define OMAP_WDT_BASE           0xfffeb000
 406 #endif
 407
 408 static struct resource wdt_resources[] = {
 409         {
 410                 .start          = OMAP_WDT_BASE,
 411                 .end            = OMAP_WDT_BASE + 0x4f,
 412                 .flags          = IORESOURCE_MEM,
 413         },
 414 };
 415
 416 static struct platform_device omap_wdt_device = {
 417         .name      = "omap_wdt",
 418         .id          = -1,
 419         .num_resources  = ARRAY_SIZE(wdt_resources),
 420         .resource       = wdt_resources,
 421 };
 422
 423 static void omap_init_wdt(void)
 424 {
 425         (void) platform_device_register(&omap_wdt_device);
 426 }
 427 #else
 428 static inline void omap_init_wdt(void) {}
 429 #endif
 430
 431 /*-------------------------------------------------------------------------*/
 432
 433 #if defined(CONFIG_HW_RANDOM_OMAP) || defined(CONFIG_HW_RANDOM_OMAP_MODULE)
 434
 435 #ifdef CONFIG_ARCH_OMAP24XX
 436 #define OMAP_RNG_BASE           0x480A0000
 437 #else
 438 #define OMAP_RNG_BASE           0xfffe5000
 439 #endif
 440
 441 static struct resource rng_resources[] = {
 442         {
 443                 .start          = OMAP_RNG_BASE,
 444                 .end            = OMAP_RNG_BASE + 0x4f,
 445                 .flags          = IORESOURCE_MEM,
 446         },
 447 };
 448
 449 static struct platform_device omap_rng_device = {
 450         .name      = "omap_rng",
 451         .id          = -1,
 452         .num_resources  = ARRAY_SIZE(rng_resources),
 453         .resource       = rng_resources,
 454 };
 455
 456 static void omap_init_rng(void)
 457 {
 458         (void) platform_device_register(&omap_rng_device);
 459 }
 460 #else
 461 static inline void omap_init_rng(void) {}
 462 #endif
 463
 464 /*
 465  * This gets called after board-specific INIT_MACHINE, and initializes most
 466  * on-chip peripherals accessible on this board (except for few like USB):
 467  *
 468  *  (a) Does any "standard config" pin muxing needed.  Board-specific
 469  *      code will have muxed GPIO pins and done "nonstandard" setup;
 470  *      that code could live in the boot loader.
 471  *  (b) Populating board-specific platform_data with the data drivers
 472  *      rely on to handle wiring variations.
 473  *  (c) Creating platform devices as meaningful on this board and
 474  *      with this kernel configuration.
 475  *
 476  * Claiming GPIOs, and setting their direction and initial values, is the
 477  * responsibility of the device drivers.  So is responding to probe().
 478  *
 479  * Board-specific knowlege like creating devices or pin setup is to be
 480  * kept out of drivers as much as possible.  In particular, pin setup
 481  * may be handled by the boot loader, and drivers should expect it will
 482  * normally have been done by the time they're probed.
 483  */
 484 static int __init omap_init_devices(void)
 485 {
 486         /* please keep these calls, and their implementations above,
 487          * in alphabetical order so they're easier to sort through.
 488          */
 489         omap_init_dsp();
 490         omap_init_kp();
 491         omap_init_mmc();
 492         omap_init_uwire();
 493         omap_init_wdt();
 494         omap_init_rng();
 495         return 0;
 496 }
 497 arch_initcall(omap_init_devices);