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 #include <asm/arch/mcbsp.h>
  28
  29 #if     defined(CONFIG_OMAP_DSP) || defined(CONFIG_OMAP_DSP_MODULE)
  30
  31 #include "../plat-omap/dsp/dsp_common.h"
  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         mutex_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         if (machine_is_omap_h2() || machine_is_omap_h3()) {
  98                 omap_cfg_reg(F18_1610_KBC0);
  99                 omap_cfg_reg(D20_1610_KBC1);
 100                 omap_cfg_reg(D19_1610_KBC2);
 101                 omap_cfg_reg(E18_1610_KBC3);
 102                 omap_cfg_reg(C21_1610_KBC4);
 103
 104                 omap_cfg_reg(G18_1610_KBR0);
 105                 omap_cfg_reg(F19_1610_KBR1);
 106                 omap_cfg_reg(H14_1610_KBR2);
 107                 omap_cfg_reg(E20_1610_KBR3);
 108                 omap_cfg_reg(E19_1610_KBR4);
 109                 omap_cfg_reg(N19_1610_KBR5);
 110         } else if (machine_is_omap_perseus2() || machine_is_omap_fsample()) {
 111                 omap_cfg_reg(E2_730_KBR0);
 112                 omap_cfg_reg(J7_730_KBR1);
 113                 omap_cfg_reg(E1_730_KBR2);
 114                 omap_cfg_reg(F3_730_KBR3);
 115                 omap_cfg_reg(D2_730_KBR4);
 116
 117                 omap_cfg_reg(C2_730_KBC0);
 118                 omap_cfg_reg(D3_730_KBC1);
 119                 omap_cfg_reg(E4_730_KBC2);
 120                 omap_cfg_reg(F4_730_KBC3);
 121                 omap_cfg_reg(E3_730_KBC4);
 122         } else if (machine_is_omap_h4()) {
 123                 omap_cfg_reg(T19_24XX_KBR0);
 124                 omap_cfg_reg(R19_24XX_KBR1);
 125                 omap_cfg_reg(V18_24XX_KBR2);
 126                 omap_cfg_reg(M21_24XX_KBR3);
 127                 omap_cfg_reg(E5__24XX_KBR4);
 128                 if (omap_has_menelaus()) {
 129                         omap_cfg_reg(B3__24XX_KBR5);
 130                         omap_cfg_reg(AA4_24XX_KBC2);
 131                         omap_cfg_reg(B13_24XX_KBC6);
 132                 } else {
 133                         omap_cfg_reg(M18_24XX_KBR5);
 134                         omap_cfg_reg(H19_24XX_KBC2);
 135                         omap_cfg_reg(N19_24XX_KBC6);
 136                 }
 137                 omap_cfg_reg(R20_24XX_KBC0);
 138                 omap_cfg_reg(M14_24XX_KBC1);
 139                 omap_cfg_reg(V17_24XX_KBC3);
 140                 omap_cfg_reg(P21_24XX_KBC4);
 141                 omap_cfg_reg(L14_24XX_KBC5);
 142         }
 143 }
 144 #else
 145 static inline void omap_init_kp(void) {}
 146 #endif
 147
 148 /*-------------------------------------------------------------------------*/
 149 #if defined(CONFIG_OMAP_MCBSP) || defined(CONFIG_OMAP_MCBSP_MODULE)
 150
 151 static struct platform_device **omap_mcbsp_devices;
 152
 153 void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
 154                                         int size)
 155 {
 156         int i;
 157
 158         if (size > OMAP_MAX_MCBSP_COUNT) {
 159                 printk(KERN_WARNING "Registered too many McBSPs platform_data."
 160                         " Using maximum (%d) available.\n",
 161                         OMAP_MAX_MCBSP_COUNT);
 162                 size = OMAP_MAX_MCBSP_COUNT;
 163         }
 164
 165         omap_mcbsp_devices = kzalloc(size * sizeof(struct platform_device *),
 166                                      GFP_KERNEL);
 167         if (!omap_mcbsp_devices) {
 168                 printk(KERN_ERR "Could not register McBSP devices\n");
 169                 return;
 170         }
 171
 172         for (i = 0; i < size; i++) {
 173                 struct platform_device *new_mcbsp;
 174                 int ret;
 175
 176                 new_mcbsp = platform_device_alloc("omap-mcbsp", i + 1);
 177                 if (!new_mcbsp)
 178                         continue;
 179                 new_mcbsp->dev.platform_data = &config[i];
 180                 ret = platform_device_add(new_mcbsp);
 181                 if (ret) {
 182                         platform_device_put(new_mcbsp);
 183                         continue;
 184                 }
 185                 omap_mcbsp_devices[i] = new_mcbsp;
 186         }
 187 }
 188
 189 #else
 190 void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
 191                                         int size)
 192 {  }
 193 #endif
 194
 195 /*-------------------------------------------------------------------------*/
 196
 197 #if     defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
 198
 199 #ifdef CONFIG_ARCH_OMAP24XX
 200 #define OMAP_MMC1_BASE          0x4809c000
 201 #define OMAP_MMC1_INT           INT_24XX_MMC_IRQ
 202 #else
 203 #define OMAP_MMC1_BASE          0xfffb7800
 204 #define OMAP_MMC1_INT           INT_MMC
 205 #endif
 206 #define OMAP_MMC2_BASE          0xfffb7c00      /* omap16xx only */
 207
 208 static struct omap_mmc_conf mmc1_conf;
 209
 210 static u64 mmc1_dmamask = 0xffffffff;
 211
 212 static struct resource mmc1_resources[] = {
 213         {
 214                 .start          = OMAP_MMC1_BASE,
 215                 .end            = OMAP_MMC1_BASE + 0x7f,
 216                 .flags          = IORESOURCE_MEM,
 217         },
 218         {
 219                 .start          = OMAP_MMC1_INT,
 220                 .flags          = IORESOURCE_IRQ,
 221         },
 222 };
 223
 224 static struct platform_device mmc_omap_device1 = {
 225         .name           = "mmci-omap",
 226         .id             = 1,
 227         .dev = {
 228                 .dma_mask       = &mmc1_dmamask,
 229                 .platform_data  = &mmc1_conf,
 230         },
 231         .num_resources  = ARRAY_SIZE(mmc1_resources),
 232         .resource       = mmc1_resources,
 233 };
 234
 235 #ifdef  CONFIG_ARCH_OMAP16XX
 236
 237 static struct omap_mmc_conf mmc2_conf;
 238
 239 static u64 mmc2_dmamask = 0xffffffff;
 240
 241 static struct resource mmc2_resources[] = {
 242         {
 243                 .start          = OMAP_MMC2_BASE,
 244                 .end            = OMAP_MMC2_BASE + 0x7f,
 245                 .flags          = IORESOURCE_MEM,
 246         },
 247         {
 248                 .start          = INT_1610_MMC2,
 249                 .flags          = IORESOURCE_IRQ,
 250         },
 251 };
 252
 253 static struct platform_device mmc_omap_device2 = {
 254         .name           = "mmci-omap",
 255         .id             = 2,
 256         .dev = {
 257                 .dma_mask       = &mmc2_dmamask,
 258                 .platform_data  = &mmc2_conf,
 259         },
 260         .num_resources  = ARRAY_SIZE(mmc2_resources),
 261         .resource       = mmc2_resources,
 262 };
 263 #endif
 264
 265 static void __init omap_init_mmc(void)
 266 {
 267         const struct omap_mmc_config    *mmc_conf;
 268         const struct omap_mmc_conf      *mmc;
 269
 270         /* NOTE:  assumes MMC was never (wrongly) enabled */
 271         mmc_conf = omap_get_config(OMAP_TAG_MMC, struct omap_mmc_config);
 272         if (!mmc_conf)
 273                 return;
 274
 275         /* block 1 is always available and has just one pinout option */
 276         mmc = &mmc_conf->mmc[0];
 277         if (mmc->enabled) {
 278                 if (cpu_is_omap24xx()) {
 279                         omap_cfg_reg(H18_24XX_MMC_CMD);
 280                         omap_cfg_reg(H15_24XX_MMC_CLKI);
 281                         omap_cfg_reg(G19_24XX_MMC_CLKO);
 282                         omap_cfg_reg(F20_24XX_MMC_DAT0);
 283                         omap_cfg_reg(F19_24XX_MMC_DAT_DIR0);
 284                         omap_cfg_reg(G18_24XX_MMC_CMD_DIR);
 285                 } else {
 286                         omap_cfg_reg(MMC_CMD);
 287                         omap_cfg_reg(MMC_CLK);
 288                         omap_cfg_reg(MMC_DAT0);
 289                         if (cpu_is_omap1710()) {
 290                                 omap_cfg_reg(M15_1710_MMC_CLKI);
 291                                 omap_cfg_reg(P19_1710_MMC_CMDDIR);
 292                                 omap_cfg_reg(P20_1710_MMC_DATDIR0);
 293                         }
 294                 }
 295                 if (mmc->wire4) {
 296                         if (cpu_is_omap24xx()) {
 297                                 omap_cfg_reg(H14_24XX_MMC_DAT1);
 298                                 omap_cfg_reg(E19_24XX_MMC_DAT2);
 299                                 omap_cfg_reg(D19_24XX_MMC_DAT3);
 300                                 omap_cfg_reg(E20_24XX_MMC_DAT_DIR1);
 301                                 omap_cfg_reg(F18_24XX_MMC_DAT_DIR2);
 302                                 omap_cfg_reg(E18_24XX_MMC_DAT_DIR3);
 303                         } else {
 304                                 omap_cfg_reg(MMC_DAT1);
 305                                 /* NOTE:  DAT2 can be on W10 (here) or M15 */
 306                                 if (!mmc->nomux)
 307                                         omap_cfg_reg(MMC_DAT2);
 308                                 omap_cfg_reg(MMC_DAT3);
 309                         }
 310                 }
 311                 mmc1_conf = *mmc;
 312                 (void) platform_device_register(&mmc_omap_device1);
 313         }
 314
 315 #ifdef  CONFIG_ARCH_OMAP16XX
 316         /* block 2 is on newer chips, and has many pinout options */
 317         mmc = &mmc_conf->mmc[1];
 318         if (mmc->enabled) {
 319                 if (!mmc->nomux) {
 320                         omap_cfg_reg(Y8_1610_MMC2_CMD);
 321                         omap_cfg_reg(Y10_1610_MMC2_CLK);
 322                         omap_cfg_reg(R18_1610_MMC2_CLKIN);
 323                         omap_cfg_reg(W8_1610_MMC2_DAT0);
 324                         if (mmc->wire4) {
 325                                 omap_cfg_reg(V8_1610_MMC2_DAT1);
 326                                 omap_cfg_reg(W15_1610_MMC2_DAT2);
 327                                 omap_cfg_reg(R10_1610_MMC2_DAT3);
 328                         }
 329
 330                         /* These are needed for the level shifter */
 331                         omap_cfg_reg(V9_1610_MMC2_CMDDIR);
 332                         omap_cfg_reg(V5_1610_MMC2_DATDIR0);
 333                         omap_cfg_reg(W19_1610_MMC2_DATDIR1);
 334                 }
 335
 336                 /* Feedback clock must be set on OMAP-1710 MMC2 */
 337                 if (cpu_is_omap1710())
 338                         omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
 339                                      MOD_CONF_CTRL_1);
 340                 mmc2_conf = *mmc;
 341                 (void) platform_device_register(&mmc_omap_device2);
 342         }
 343 #endif
 344         return;
 345 }
 346 #else
 347 static inline void omap_init_mmc(void) {}
 348 #endif
 349
 350 /*-------------------------------------------------------------------------*/
 351
 352 /* Numbering for the SPI-capable controllers when used for SPI:
 353  * spi          = 1
 354  * uwire        = 2
 355  * mmc1..2      = 3..4
 356  * mcbsp1..3    = 5..7
 357  */
 358
 359 #if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE)
 360
 361 #define OMAP_UWIRE_BASE         0xfffb3000
 362
 363 static struct resource uwire_resources[] = {
 364         {
 365                 .start          = OMAP_UWIRE_BASE,
 366                 .end            = OMAP_UWIRE_BASE + 0x20,
 367                 .flags          = IORESOURCE_MEM,
 368         },
 369 };
 370
 371 static struct platform_device omap_uwire_device = {
 372         .name      = "omap_uwire",
 373         .id          = -1,
 374         .num_resources  = ARRAY_SIZE(uwire_resources),
 375         .resource       = uwire_resources,
 376 };
 377
 378 static void omap_init_uwire(void)
 379 {
 380         /* FIXME define and use a boot tag; not all boards will be hooking
 381          * up devices to the microwire controller, and multi-board configs
 382          * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
 383          */
 384
 385         /* board-specific code must configure chipselects (only a few
 386          * are normally used) and SCLK/SDI/SDO (each has two choices).
 387          */
 388         (void) platform_device_register(&omap_uwire_device);
 389 }
 390 #else
 391 static inline void omap_init_uwire(void) {}
 392 #endif
 393
 394 /*-------------------------------------------------------------------------*/
 395
 396 #if     defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
 397
 398 #ifdef CONFIG_ARCH_OMAP24XX
 399 #define OMAP_WDT_BASE           0x48022000
 400 #else
 401 #define OMAP_WDT_BASE           0xfffeb000
 402 #endif
 403
 404 static struct resource wdt_resources[] = {
 405         {
 406                 .start          = OMAP_WDT_BASE,
 407                 .end            = OMAP_WDT_BASE + 0x4f,
 408                 .flags          = IORESOURCE_MEM,
 409         },
 410 };
 411
 412 static struct platform_device omap_wdt_device = {
 413         .name      = "omap_wdt",
 414         .id          = -1,
 415         .num_resources  = ARRAY_SIZE(wdt_resources),
 416         .resource       = wdt_resources,
 417 };
 418
 419 static void omap_init_wdt(void)
 420 {
 421         (void) platform_device_register(&omap_wdt_device);
 422 }
 423 #else
 424 static inline void omap_init_wdt(void) {}
 425 #endif
 426
 427 /*-------------------------------------------------------------------------*/
 428
 429 #if defined(CONFIG_HW_RANDOM_OMAP) || defined(CONFIG_HW_RANDOM_OMAP_MODULE)
 430
 431 #ifdef CONFIG_ARCH_OMAP24XX
 432 #define OMAP_RNG_BASE           0x480A0000
 433 #else
 434 #define OMAP_RNG_BASE           0xfffe5000
 435 #endif
 436
 437 static struct resource rng_resources[] = {
 438         {
 439                 .start          = OMAP_RNG_BASE,
 440                 .end            = OMAP_RNG_BASE + 0x4f,
 441                 .flags          = IORESOURCE_MEM,
 442         },
 443 };
 444
 445 static struct platform_device omap_rng_device = {
 446         .name      = "omap_rng",
 447         .id          = -1,
 448         .num_resources  = ARRAY_SIZE(rng_resources),
 449         .resource       = rng_resources,
 450 };
 451
 452 static void omap_init_rng(void)
 453 {
 454         (void) platform_device_register(&omap_rng_device);
 455 }
 456 #else
 457 static inline void omap_init_rng(void) {}
 458 #endif
 459
 460 /*
 461  * This gets called after board-specific INIT_MACHINE, and initializes most
 462  * on-chip peripherals accessible on this board (except for few like USB):
 463  *
 464  *  (a) Does any "standard config" pin muxing needed.  Board-specific
 465  *      code will have muxed GPIO pins and done "nonstandard" setup;
 466  *      that code could live in the boot loader.
 467  *  (b) Populating board-specific platform_data with the data drivers
 468  *      rely on to handle wiring variations.
 469  *  (c) Creating platform devices as meaningful on this board and
 470  *      with this kernel configuration.
 471  *
 472  * Claiming GPIOs, and setting their direction and initial values, is the
 473  * responsibility of the device drivers.  So is responding to probe().
 474  *
 475  * Board-specific knowlege like creating devices or pin setup is to be
 476  * kept out of drivers as much as possible.  In particular, pin setup
 477  * may be handled by the boot loader, and drivers should expect it will
 478  * normally have been done by the time they're probed.
 479  */
 480 static int __init omap_init_devices(void)
 481 {
 482 /*
 483  * Need to enable relevant once for 2430 SDP
 484  */
 485 #ifndef CONFIG_MACH_OMAP_2430SDP
 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 #endif
 496         return 0;
 497 }
 498 arch_initcall(omap_init_devices);