kernel/arch/arm/mach-omap1/devices.c

   1 /*
   2  * linux/arch/arm/mach-omap1/devices.c
   3  *
   4  * OMAP1 platform device setup/initialization
   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/dma-mapping.h>
  13 #include <linux/gpio.h>
  14 #include <linux/module.h>
  15 #include <linux/kernel.h>
  16 #include <linux/init.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/spi/spi.h>
  19
  20 #include <linux/platform_data/omap-wd-timer.h>
  21
  22 #include <asm/mach/map.h>
  23
  24 #include <mach/tc.h>
  25 #include <mach/mux.h>
  26
  27 #include <mach/omap7xx.h>
  28 #include <mach/camera.h>
  29 #include <mach/hardware.h>
  30
  31 #include "common.h"
  32 #include "clock.h"
  33 #include "mmc.h"
  34 #include "sram.h"
  35
  36 #if defined(CONFIG_SND_SOC) || defined(CONFIG_SND_SOC_MODULE)
  37
  38 static struct platform_device omap_pcm = {
  39         .name   = "omap-pcm-audio",
  40         .id     = -1,
  41 };
  42
  43 static void omap_init_audio(void)
  44 {
  45         platform_device_register(&omap_pcm);
  46 }
  47
  48 #else
  49 static inline void omap_init_audio(void) {}
  50 #endif
  51
  52 /*-------------------------------------------------------------------------*/
  53
  54 #if defined(CONFIG_RTC_DRV_OMAP) || defined(CONFIG_RTC_DRV_OMAP_MODULE)
  55
  56 #define OMAP_RTC_BASE           0xfffb4800
  57
  58 static struct resource rtc_resources[] = {
  59         {
  60                 .start          = OMAP_RTC_BASE,
  61                 .end            = OMAP_RTC_BASE + 0x5f,
  62                 .flags          = IORESOURCE_MEM,
  63         },
  64         {
  65                 .start          = INT_RTC_TIMER,
  66                 .flags          = IORESOURCE_IRQ,
  67         },
  68         {
  69                 .start          = INT_RTC_ALARM,
  70                 .flags          = IORESOURCE_IRQ,
  71         },
  72 };
  73
  74 static struct platform_device omap_rtc_device = {
  75         .name           = "omap_rtc",
  76         .id             = -1,
  77         .num_resources  = ARRAY_SIZE(rtc_resources),
  78         .resource       = rtc_resources,
  79 };
  80
  81 static void omap_init_rtc(void)
  82 {
  83         (void) platform_device_register(&omap_rtc_device);
  84 }
  85 #else
  86 static inline void omap_init_rtc(void) {}
  87 #endif
  88
  89 static inline void omap_init_mbox(void) { }
  90
  91 /*-------------------------------------------------------------------------*/
  92
  93 #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
  94
  95 static inline void omap1_mmc_mux(struct omap_mmc_platform_data *mmc_controller,
  96                         int controller_nr)
  97 {
  98         if (controller_nr == 0) {
  99                 if (cpu_is_omap7xx()) {
 100                         omap_cfg_reg(MMC_7XX_CMD);
 101                         omap_cfg_reg(MMC_7XX_CLK);
 102                         omap_cfg_reg(MMC_7XX_DAT0);
 103                 } else {
 104                         omap_cfg_reg(MMC_CMD);
 105                         omap_cfg_reg(MMC_CLK);
 106                         omap_cfg_reg(MMC_DAT0);
 107                 }
 108
 109                 if (cpu_is_omap1710()) {
 110                         omap_cfg_reg(M15_1710_MMC_CLKI);
 111                         omap_cfg_reg(P19_1710_MMC_CMDDIR);
 112                         omap_cfg_reg(P20_1710_MMC_DATDIR0);
 113                 }
 114                 if (mmc_controller->slots[0].wires == 4 && !cpu_is_omap7xx()) {
 115                         omap_cfg_reg(MMC_DAT1);
 116                         /* NOTE: DAT2 can be on W10 (here) or M15 */
 117                         if (!mmc_controller->slots[0].nomux)
 118                                 omap_cfg_reg(MMC_DAT2);
 119                         omap_cfg_reg(MMC_DAT3);
 120                 }
 121         }
 122
 123         /* Block 2 is on newer chips, and has many pinout options */
 124         if (cpu_is_omap16xx() && controller_nr == 1) {
 125                 if (!mmc_controller->slots[1].nomux) {
 126                         omap_cfg_reg(Y8_1610_MMC2_CMD);
 127                         omap_cfg_reg(Y10_1610_MMC2_CLK);
 128                         omap_cfg_reg(R18_1610_MMC2_CLKIN);
 129                         omap_cfg_reg(W8_1610_MMC2_DAT0);
 130                         if (mmc_controller->slots[1].wires == 4) {
 131                                 omap_cfg_reg(V8_1610_MMC2_DAT1);
 132                                 omap_cfg_reg(W15_1610_MMC2_DAT2);
 133                                 omap_cfg_reg(R10_1610_MMC2_DAT3);
 134                         }
 135
 136                         /* These are needed for the level shifter */
 137                         omap_cfg_reg(V9_1610_MMC2_CMDDIR);
 138                         omap_cfg_reg(V5_1610_MMC2_DATDIR0);
 139                         omap_cfg_reg(W19_1610_MMC2_DATDIR1);
 140                 }
 141
 142                 /* Feedback clock must be set on OMAP-1710 MMC2 */
 143                 if (cpu_is_omap1710())
 144                         omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
 145                                         MOD_CONF_CTRL_1);
 146         }
 147 }
 148
 149 #define OMAP_MMC_NR_RES         4
 150
 151 /*
 152  * Register MMC devices.
 153  */
 154 static int __init omap_mmc_add(const char *name, int id, unsigned long base,
 155                                 unsigned long size, unsigned int irq,
 156                                 unsigned rx_req, unsigned tx_req,
 157                                 struct omap_mmc_platform_data *data)
 158 {
 159         struct platform_device *pdev;
 160         struct resource res[OMAP_MMC_NR_RES];
 161         int ret;
 162
 163         pdev = platform_device_alloc(name, id);
 164         if (!pdev)
 165                 return -ENOMEM;
 166
 167         memset(res, 0, OMAP_MMC_NR_RES * sizeof(struct resource));
 168         res[0].start = base;
 169         res[0].end = base + size - 1;
 170         res[0].flags = IORESOURCE_MEM;
 171         res[1].start = res[1].end = irq;
 172         res[1].flags = IORESOURCE_IRQ;
 173         res[2].start = rx_req;
 174         res[2].name = "rx";
 175         res[2].flags = IORESOURCE_DMA;
 176         res[3].start = tx_req;
 177         res[3].name = "tx";
 178         res[3].flags = IORESOURCE_DMA;
 179
 180         if (cpu_is_omap7xx())
 181                 data->slots[0].features = MMC_OMAP7XX;
 182         if (cpu_is_omap15xx())
 183                 data->slots[0].features = MMC_OMAP15XX;
 184         if (cpu_is_omap16xx())
 185                 data->slots[0].features = MMC_OMAP16XX;
 186
 187         ret = platform_device_add_resources(pdev, res, ARRAY_SIZE(res));
 188         if (ret == 0)
 189                 ret = platform_device_add_data(pdev, data, sizeof(*data));
 190         if (ret)
 191                 goto fail;
 192
 193         ret = platform_device_add(pdev);
 194         if (ret)
 195                 goto fail;
 196
 197         /* return device handle to board setup code */
 198         data->dev = &pdev->dev;
 199         return 0;
 200
 201 fail:
 202         platform_device_put(pdev);
 203         return ret;
 204 }
 205
 206 void __init omap1_init_mmc(struct omap_mmc_platform_data **mmc_data,
 207                         int nr_controllers)
 208 {
 209         int i;
 210
 211         for (i = 0; i < nr_controllers; i++) {
 212                 unsigned long base, size;
 213                 unsigned rx_req, tx_req;
 214                 unsigned int irq = 0;
 215
 216                 if (!mmc_data[i])
 217                         continue;
 218
 219                 omap1_mmc_mux(mmc_data[i], i);
 220
 221                 switch (i) {
 222                 case 0:
 223                         base = OMAP1_MMC1_BASE;
 224                         irq = INT_MMC;
 225                         rx_req = 22;
 226                         tx_req = 21;
 227                         break;
 228                 case 1:
 229                         if (!cpu_is_omap16xx())
 230                                 return;
 231                         base = OMAP1_MMC2_BASE;
 232                         irq = INT_1610_MMC2;
 233                         rx_req = 55;
 234                         tx_req = 54;
 235                         break;
 236                 default:
 237                         continue;
 238                 }
 239                 size = OMAP1_MMC_SIZE;
 240
 241                 omap_mmc_add("mmci-omap", i, base, size, irq,
 242                                 rx_req, tx_req, mmc_data[i]);
 243         }
 244 }
 245
 246 #endif
 247
 248 /*-------------------------------------------------------------------------*/
 249
 250 /* OMAP7xx SPI support */
 251 #if defined(CONFIG_SPI_OMAP_100K) || defined(CONFIG_SPI_OMAP_100K_MODULE)
 252
 253 struct platform_device omap_spi1 = {
 254         .name           = "omap1_spi100k",
 255         .id             = 1,
 256 };
 257
 258 struct platform_device omap_spi2 = {
 259         .name           = "omap1_spi100k",
 260         .id             = 2,
 261 };
 262
 263 static void omap_init_spi100k(void)
 264 {
 265         omap_spi1.dev.platform_data = ioremap(OMAP7XX_SPI1_BASE, 0x7ff);
 266         if (omap_spi1.dev.platform_data)
 267                 platform_device_register(&omap_spi1);
 268
 269         omap_spi2.dev.platform_data = ioremap(OMAP7XX_SPI2_BASE, 0x7ff);
 270         if (omap_spi2.dev.platform_data)
 271                 platform_device_register(&omap_spi2);
 272 }
 273
 274 #else
 275 static inline void omap_init_spi100k(void)
 276 {
 277 }
 278 #endif
 279
 280
 281 #define OMAP1_CAMERA_BASE       0xfffb6800
 282 #define OMAP1_CAMERA_IOSIZE     0x1c
 283
 284 static struct resource omap1_camera_resources[] = {
 285         [0] = {
 286                 .start  = OMAP1_CAMERA_BASE,
 287                 .end    = OMAP1_CAMERA_BASE + OMAP1_CAMERA_IOSIZE - 1,
 288                 .flags  = IORESOURCE_MEM,
 289         },
 290         [1] = {
 291                 .start  = INT_CAMERA,
 292                 .flags  = IORESOURCE_IRQ,
 293         },
 294 };
 295
 296 static u64 omap1_camera_dma_mask = DMA_BIT_MASK(32);
 297
 298 static struct platform_device omap1_camera_device = {
 299         .name           = "omap1-camera",
 300         .id             = 0, /* This is used to put cameras on this interface */
 301         .dev            = {
 302                 .dma_mask               = &omap1_camera_dma_mask,
 303                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 304         },
 305         .num_resources  = ARRAY_SIZE(omap1_camera_resources),
 306         .resource       = omap1_camera_resources,
 307 };
 308
 309 void __init omap1_camera_init(void *info)
 310 {
 311         struct platform_device *dev = &omap1_camera_device;
 312         int ret;
 313
 314         dev->dev.platform_data = info;
 315
 316         ret = platform_device_register(dev);
 317         if (ret)
 318                 dev_err(&dev->dev, "unable to register device: %d\n", ret);
 319 }
 320
 321
 322 /*-------------------------------------------------------------------------*/
 323
 324 static inline void omap_init_sti(void) {}
 325
 326 /* Numbering for the SPI-capable controllers when used for SPI:
 327  * spi          = 1
 328  * uwire        = 2
 329  * mmc1..2      = 3..4
 330  * mcbsp1..3    = 5..7
 331  */
 332
 333 #if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE)
 334
 335 #define OMAP_UWIRE_BASE         0xfffb3000
 336
 337 static struct resource uwire_resources[] = {
 338         {
 339                 .start          = OMAP_UWIRE_BASE,
 340                 .end            = OMAP_UWIRE_BASE + 0x20,
 341                 .flags          = IORESOURCE_MEM,
 342         },
 343 };
 344
 345 static struct platform_device omap_uwire_device = {
 346         .name      = "omap_uwire",
 347         .id          = -1,
 348         .num_resources  = ARRAY_SIZE(uwire_resources),
 349         .resource       = uwire_resources,
 350 };
 351
 352 static void omap_init_uwire(void)
 353 {
 354         /* FIXME define and use a boot tag; not all boards will be hooking
 355          * up devices to the microwire controller, and multi-board configs
 356          * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
 357          */
 358
 359         /* board-specific code must configure chipselects (only a few
 360          * are normally used) and SCLK/SDI/SDO (each has two choices).
 361          */
 362         (void) platform_device_register(&omap_uwire_device);
 363 }
 364 #else
 365 static inline void omap_init_uwire(void) {}
 366 #endif
 367
 368
 369 #define OMAP1_RNG_BASE          0xfffe5000
 370
 371 static struct resource omap1_rng_resources[] = {
 372         {
 373                 .start          = OMAP1_RNG_BASE,
 374                 .end            = OMAP1_RNG_BASE + 0x4f,
 375                 .flags          = IORESOURCE_MEM,
 376         },
 377 };
 378
 379 static struct platform_device omap1_rng_device = {
 380         .name           = "omap_rng",
 381         .id             = -1,
 382         .num_resources  = ARRAY_SIZE(omap1_rng_resources),
 383         .resource       = omap1_rng_resources,
 384 };
 385
 386 static void omap1_init_rng(void)
 387 {
 388         if (!cpu_is_omap16xx())
 389                 return;
 390
 391         (void) platform_device_register(&omap1_rng_device);
 392 }
 393
 394 /*-------------------------------------------------------------------------*/
 395
 396 /*
 397  * This gets called after board-specific INIT_MACHINE, and initializes most
 398  * on-chip peripherals accessible on this board (except for few like USB):
 399  *
 400  *  (a) Does any "standard config" pin muxing needed.  Board-specific
 401  *      code will have muxed GPIO pins and done "nonstandard" setup;
 402  *      that code could live in the boot loader.
 403  *  (b) Populating board-specific platform_data with the data drivers
 404  *      rely on to handle wiring variations.
 405  *  (c) Creating platform devices as meaningful on this board and
 406  *      with this kernel configuration.
 407  *
 408  * Claiming GPIOs, and setting their direction and initial values, is the
 409  * responsibility of the device drivers.  So is responding to probe().
 410  *
 411  * Board-specific knowledge like creating devices or pin setup is to be
 412  * kept out of drivers as much as possible.  In particular, pin setup
 413  * may be handled by the boot loader, and drivers should expect it will
 414  * normally have been done by the time they're probed.
 415  */
 416 static int __init omap1_init_devices(void)
 417 {
 418         if (!cpu_class_is_omap1())
 419                 return -ENODEV;
 420
 421         omap_sram_init();
 422         omap1_clk_late_init();
 423
 424         /* please keep these calls, and their implementations above,
 425          * in alphabetical order so they're easier to sort through.
 426          */
 427
 428         omap_init_audio();
 429         omap_init_mbox();
 430         omap_init_rtc();
 431         omap_init_spi100k();
 432         omap_init_sti();
 433         omap_init_uwire();
 434         omap1_init_rng();
 435
 436         return 0;
 437 }
 438 arch_initcall(omap1_init_devices);
 439
 440 #if defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
 441
 442 static struct resource wdt_resources[] = {
 443         {
 444                 .start          = 0xfffeb000,
 445                 .end            = 0xfffeb07F,
 446                 .flags          = IORESOURCE_MEM,
 447         },
 448 };
 449
 450 static struct platform_device omap_wdt_device = {
 451         .name           = "omap_wdt",
 452         .id             = -1,
 453         .num_resources  = ARRAY_SIZE(wdt_resources),
 454         .resource       = wdt_resources,
 455 };
 456
 457 static int __init omap_init_wdt(void)
 458 {
 459         struct omap_wd_timer_platform_data pdata;
 460         int ret;
 461
 462         if (!cpu_is_omap16xx())
 463                 return -ENODEV;
 464
 465         pdata.read_reset_sources = omap1_get_reset_sources;
 466
 467         ret = platform_device_register(&omap_wdt_device);
 468         if (!ret) {
 469                 ret = platform_device_add_data(&omap_wdt_device, &pdata,
 470                                                sizeof(pdata));
 471                 if (ret)
 472                         platform_device_del(&omap_wdt_device);
 473         }
 474
 475         return ret;
 476 }
 477 subsys_initcall(omap_init_wdt);
 478 #endif