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 <asm/mach/map.h>
  21
  22 #include <mach/tc.h>
  23 #include <mach/mux.h>
  24
  25 #include <mach/omap7xx.h>
  26 #include <mach/camera.h>
  27 #include <mach/hardware.h>
  28
  29 #include "common.h"
  30 #include "clock.h"
  31 #include "dma.h"
  32 #include "mmc.h"
  33 #include "sram.h"
  34
  35 #if defined(CONFIG_SND_SOC) || defined(CONFIG_SND_SOC_MODULE)
  36
  37 static struct platform_device omap_pcm = {
  38         .name   = "omap-pcm-audio",
  39         .id     = -1,
  40 };
  41
  42 static void omap_init_audio(void)
  43 {
  44         platform_device_register(&omap_pcm);
  45 }
  46
  47 #else
  48 static inline void omap_init_audio(void) {}
  49 #endif
  50
  51 /*-------------------------------------------------------------------------*/
  52
  53 #if defined(CONFIG_RTC_DRV_OMAP) || defined(CONFIG_RTC_DRV_OMAP_MODULE)
  54
  55 #define OMAP_RTC_BASE           0xfffb4800
  56
  57 static struct resource rtc_resources[] = {
  58         {
  59                 .start          = OMAP_RTC_BASE,
  60                 .end            = OMAP_RTC_BASE + 0x5f,
  61                 .flags          = IORESOURCE_MEM,
  62         },
  63         {
  64                 .start          = INT_RTC_TIMER,
  65                 .flags          = IORESOURCE_IRQ,
  66         },
  67         {
  68                 .start          = INT_RTC_ALARM,
  69                 .flags          = IORESOURCE_IRQ,
  70         },
  71 };
  72
  73 static struct platform_device omap_rtc_device = {
  74         .name           = "omap_rtc",
  75         .id             = -1,
  76         .num_resources  = ARRAY_SIZE(rtc_resources),
  77         .resource       = rtc_resources,
  78 };
  79
  80 static void omap_init_rtc(void)
  81 {
  82         (void) platform_device_register(&omap_rtc_device);
  83 }
  84 #else
  85 static inline void omap_init_rtc(void) {}
  86 #endif
  87
  88 static inline void omap_init_mbox(void) { }
  89
  90 /*-------------------------------------------------------------------------*/
  91
  92 #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
  93
  94 static inline void omap1_mmc_mux(struct omap_mmc_platform_data *mmc_controller,
  95                         int controller_nr)
  96 {
  97         if (controller_nr == 0) {
  98                 if (cpu_is_omap7xx()) {
  99                         omap_cfg_reg(MMC_7XX_CMD);
 100                         omap_cfg_reg(MMC_7XX_CLK);
 101                         omap_cfg_reg(MMC_7XX_DAT0);
 102                 } else {
 103                         omap_cfg_reg(MMC_CMD);
 104                         omap_cfg_reg(MMC_CLK);
 105                         omap_cfg_reg(MMC_DAT0);
 106                 }
 107
 108                 if (cpu_is_omap1710()) {
 109                         omap_cfg_reg(M15_1710_MMC_CLKI);
 110                         omap_cfg_reg(P19_1710_MMC_CMDDIR);
 111                         omap_cfg_reg(P20_1710_MMC_DATDIR0);
 112                 }
 113                 if (mmc_controller->slots[0].wires == 4 && !cpu_is_omap7xx()) {
 114                         omap_cfg_reg(MMC_DAT1);
 115                         /* NOTE: DAT2 can be on W10 (here) or M15 */
 116                         if (!mmc_controller->slots[0].nomux)
 117                                 omap_cfg_reg(MMC_DAT2);
 118                         omap_cfg_reg(MMC_DAT3);
 119                 }
 120         }
 121
 122         /* Block 2 is on newer chips, and has many pinout options */
 123         if (cpu_is_omap16xx() && controller_nr == 1) {
 124                 if (!mmc_controller->slots[1].nomux) {
 125                         omap_cfg_reg(Y8_1610_MMC2_CMD);
 126                         omap_cfg_reg(Y10_1610_MMC2_CLK);
 127                         omap_cfg_reg(R18_1610_MMC2_CLKIN);
 128                         omap_cfg_reg(W8_1610_MMC2_DAT0);
 129                         if (mmc_controller->slots[1].wires == 4) {
 130                                 omap_cfg_reg(V8_1610_MMC2_DAT1);
 131                                 omap_cfg_reg(W15_1610_MMC2_DAT2);
 132                                 omap_cfg_reg(R10_1610_MMC2_DAT3);
 133                         }
 134
 135                         /* These are needed for the level shifter */
 136                         omap_cfg_reg(V9_1610_MMC2_CMDDIR);
 137                         omap_cfg_reg(V5_1610_MMC2_DATDIR0);
 138                         omap_cfg_reg(W19_1610_MMC2_DATDIR1);
 139                 }
 140
 141                 /* Feedback clock must be set on OMAP-1710 MMC2 */
 142                 if (cpu_is_omap1710())
 143                         omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
 144                                         MOD_CONF_CTRL_1);
 145         }
 146 }
 147
 148 #define OMAP_MMC_NR_RES         4
 149
 150 /*
 151  * Register MMC devices.
 152  */
 153 static int __init omap_mmc_add(const char *name, int id, unsigned long base,
 154                                 unsigned long size, unsigned int irq,
 155                                 unsigned rx_req, unsigned tx_req,
 156                                 struct omap_mmc_platform_data *data)
 157 {
 158         struct platform_device *pdev;
 159         struct resource res[OMAP_MMC_NR_RES];
 160         int ret;
 161
 162         pdev = platform_device_alloc(name, id);
 163         if (!pdev)
 164                 return -ENOMEM;
 165
 166         memset(res, 0, OMAP_MMC_NR_RES * sizeof(struct resource));
 167         res[0].start = base;
 168         res[0].end = base + size - 1;
 169         res[0].flags = IORESOURCE_MEM;
 170         res[1].start = res[1].end = irq;
 171         res[1].flags = IORESOURCE_IRQ;
 172         res[2].start = rx_req;
 173         res[2].name = "rx";
 174         res[2].flags = IORESOURCE_DMA;
 175         res[3].start = tx_req;
 176         res[3].name = "tx";
 177         res[3].flags = IORESOURCE_DMA;
 178
 179         if (cpu_is_omap7xx())
 180                 data->slots[0].features = MMC_OMAP7XX;
 181         if (cpu_is_omap15xx())
 182                 data->slots[0].features = MMC_OMAP15XX;
 183         if (cpu_is_omap16xx())
 184                 data->slots[0].features = MMC_OMAP16XX;
 185
 186         ret = platform_device_add_resources(pdev, res, ARRAY_SIZE(res));
 187         if (ret == 0)
 188                 ret = platform_device_add_data(pdev, data, sizeof(*data));
 189         if (ret)
 190                 goto fail;
 191
 192         ret = platform_device_add(pdev);
 193         if (ret)
 194                 goto fail;
 195
 196         /* return device handle to board setup code */
 197         data->dev = &pdev->dev;
 198         return 0;
 199
 200 fail:
 201         platform_device_put(pdev);
 202         return ret;
 203 }
 204
 205 void __init omap1_init_mmc(struct omap_mmc_platform_data **mmc_data,
 206                         int nr_controllers)
 207 {
 208         int i;
 209
 210         for (i = 0; i < nr_controllers; i++) {
 211                 unsigned long base, size;
 212                 unsigned rx_req, tx_req;
 213                 unsigned int irq = 0;
 214
 215                 if (!mmc_data[i])
 216                         continue;
 217
 218                 omap1_mmc_mux(mmc_data[i], i);
 219
 220                 switch (i) {
 221                 case 0:
 222                         base = OMAP1_MMC1_BASE;
 223                         irq = INT_MMC;
 224                         rx_req = OMAP_DMA_MMC_RX;
 225                         tx_req = OMAP_DMA_MMC_TX;
 226                         break;
 227                 case 1:
 228                         if (!cpu_is_omap16xx())
 229                                 return;
 230                         base = OMAP1_MMC2_BASE;
 231                         irq = INT_1610_MMC2;
 232                         rx_req = OMAP_DMA_MMC2_RX;
 233                         tx_req = OMAP_DMA_MMC2_TX;
 234                         break;
 235                 default:
 236                         continue;
 237                 }
 238                 size = OMAP1_MMC_SIZE;
 239
 240                 omap_mmc_add("mmci-omap", i, base, size, irq,
 241                                 rx_req, tx_req, mmc_data[i]);
 242         }
 243 }
 244
 245 #endif
 246
 247 /*-------------------------------------------------------------------------*/
 248
 249 /* OMAP7xx SPI support */
 250 #if defined(CONFIG_SPI_OMAP_100K) || defined(CONFIG_SPI_OMAP_100K_MODULE)
 251
 252 struct platform_device omap_spi1 = {
 253         .name           = "omap1_spi100k",
 254         .id             = 1,
 255 };
 256
 257 struct platform_device omap_spi2 = {
 258         .name           = "omap1_spi100k",
 259         .id             = 2,
 260 };
 261
 262 static void omap_init_spi100k(void)
 263 {
 264         omap_spi1.dev.platform_data = ioremap(OMAP7XX_SPI1_BASE, 0x7ff);
 265         if (omap_spi1.dev.platform_data)
 266                 platform_device_register(&omap_spi1);
 267
 268         omap_spi2.dev.platform_data = ioremap(OMAP7XX_SPI2_BASE, 0x7ff);
 269         if (omap_spi2.dev.platform_data)
 270                 platform_device_register(&omap_spi2);
 271 }
 272
 273 #else
 274 static inline void omap_init_spi100k(void)
 275 {
 276 }
 277 #endif
 278
 279
 280 #define OMAP1_CAMERA_BASE       0xfffb6800
 281 #define OMAP1_CAMERA_IOSIZE     0x1c
 282
 283 static struct resource omap1_camera_resources[] = {
 284         [0] = {
 285                 .start  = OMAP1_CAMERA_BASE,
 286                 .end    = OMAP1_CAMERA_BASE + OMAP1_CAMERA_IOSIZE - 1,
 287                 .flags  = IORESOURCE_MEM,
 288         },
 289         [1] = {
 290                 .start  = INT_CAMERA,
 291                 .flags  = IORESOURCE_IRQ,
 292         },
 293 };
 294
 295 static u64 omap1_camera_dma_mask = DMA_BIT_MASK(32);
 296
 297 static struct platform_device omap1_camera_device = {
 298         .name           = "omap1-camera",
 299         .id             = 0, /* This is used to put cameras on this interface */
 300         .dev            = {
 301                 .dma_mask               = &omap1_camera_dma_mask,
 302                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 303         },
 304         .num_resources  = ARRAY_SIZE(omap1_camera_resources),
 305         .resource       = omap1_camera_resources,
 306 };
 307
 308 void __init omap1_camera_init(void *info)
 309 {
 310         struct platform_device *dev = &omap1_camera_device;
 311         int ret;
 312
 313         dev->dev.platform_data = info;
 314
 315         ret = platform_device_register(dev);
 316         if (ret)
 317                 dev_err(&dev->dev, "unable to register device: %d\n", ret);
 318 }
 319
 320
 321 /*-------------------------------------------------------------------------*/
 322
 323 static inline void omap_init_sti(void) {}
 324
 325 /* Numbering for the SPI-capable controllers when used for SPI:
 326  * spi          = 1
 327  * uwire        = 2
 328  * mmc1..2      = 3..4
 329  * mcbsp1..3    = 5..7
 330  */
 331
 332 #if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE)
 333
 334 #define OMAP_UWIRE_BASE         0xfffb3000
 335
 336 static struct resource uwire_resources[] = {
 337         {
 338                 .start          = OMAP_UWIRE_BASE,
 339                 .end            = OMAP_UWIRE_BASE + 0x20,
 340                 .flags          = IORESOURCE_MEM,
 341         },
 342 };
 343
 344 static struct platform_device omap_uwire_device = {
 345         .name      = "omap_uwire",
 346         .id          = -1,
 347         .num_resources  = ARRAY_SIZE(uwire_resources),
 348         .resource       = uwire_resources,
 349 };
 350
 351 static void omap_init_uwire(void)
 352 {
 353         /* FIXME define and use a boot tag; not all boards will be hooking
 354          * up devices to the microwire controller, and multi-board configs
 355          * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
 356          */
 357
 358         /* board-specific code must configure chipselects (only a few
 359          * are normally used) and SCLK/SDI/SDO (each has two choices).
 360          */
 361         (void) platform_device_register(&omap_uwire_device);
 362 }
 363 #else
 364 static inline void omap_init_uwire(void) {}
 365 #endif
 366
 367
 368 #define OMAP1_RNG_BASE          0xfffe5000
 369
 370 static struct resource omap1_rng_resources[] = {
 371         {
 372                 .start          = OMAP1_RNG_BASE,
 373                 .end            = OMAP1_RNG_BASE + 0x4f,
 374                 .flags          = IORESOURCE_MEM,
 375         },
 376 };
 377
 378 static struct platform_device omap1_rng_device = {
 379         .name           = "omap_rng",
 380         .id             = -1,
 381         .num_resources  = ARRAY_SIZE(omap1_rng_resources),
 382         .resource       = omap1_rng_resources,
 383 };
 384
 385 static void omap1_init_rng(void)
 386 {
 387         if (!cpu_is_omap16xx())
 388                 return;
 389
 390         (void) platform_device_register(&omap1_rng_device);
 391 }
 392
 393 /*-------------------------------------------------------------------------*/
 394
 395 /*
 396  * This gets called after board-specific INIT_MACHINE, and initializes most
 397  * on-chip peripherals accessible on this board (except for few like USB):
 398  *
 399  *  (a) Does any "standard config" pin muxing needed.  Board-specific
 400  *      code will have muxed GPIO pins and done "nonstandard" setup;
 401  *      that code could live in the boot loader.
 402  *  (b) Populating board-specific platform_data with the data drivers
 403  *      rely on to handle wiring variations.
 404  *  (c) Creating platform devices as meaningful on this board and
 405  *      with this kernel configuration.
 406  *
 407  * Claiming GPIOs, and setting their direction and initial values, is the
 408  * responsibility of the device drivers.  So is responding to probe().
 409  *
 410  * Board-specific knowledge like creating devices or pin setup is to be
 411  * kept out of drivers as much as possible.  In particular, pin setup
 412  * may be handled by the boot loader, and drivers should expect it will
 413  * normally have been done by the time they're probed.
 414  */
 415 static int __init omap1_init_devices(void)
 416 {
 417         if (!cpu_class_is_omap1())
 418                 return -ENODEV;
 419
 420         omap_sram_init();
 421         omap1_clk_late_init();
 422
 423         /* please keep these calls, and their implementations above,
 424          * in alphabetical order so they're easier to sort through.
 425          */
 426
 427         omap_init_audio();
 428         omap_init_mbox();
 429         omap_init_rtc();
 430         omap_init_spi100k();
 431         omap_init_sti();
 432         omap_init_uwire();
 433         omap1_init_rng();
 434
 435         return 0;
 436 }
 437 arch_initcall(omap1_init_devices);
 438
 439 #if defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
 440
 441 static struct resource wdt_resources[] = {
 442         {
 443                 .start          = 0xfffeb000,
 444                 .end            = 0xfffeb07F,
 445                 .flags          = IORESOURCE_MEM,
 446         },
 447 };
 448
 449 static struct platform_device omap_wdt_device = {
 450         .name      = "omap_wdt",
 451         .id          = -1,
 452         .num_resources  = ARRAY_SIZE(wdt_resources),
 453         .resource       = wdt_resources,
 454 };
 455
 456 static int __init omap_init_wdt(void)
 457 {
 458         if (!cpu_is_omap16xx())
 459                 return -ENODEV;
 460
 461         return platform_device_register(&omap_wdt_device);
 462 }
 463 subsys_initcall(omap_init_wdt);
 464 #endif