LXR linux/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 "dma.h"
  34#include "mmc.h"
  35#include "sram.h"
  36
  37#if defined(CONFIG_SND_SOC) || defined(CONFIG_SND_SOC_MODULE)
  38
  39static struct platform_device omap_pcm = {
  40        .name   = "omap-pcm-audio",
  41        .id     = -1,
  42};
  43
  44static void omap_init_audio(void)
  45{
  46        platform_device_register(&omap_pcm);
  47}
  48
  49#else
  50static inline void omap_init_audio(void) {}
  51#endif
  52
  53/*-------------------------------------------------------------------------*/
  54
  55#if defined(CONFIG_RTC_DRV_OMAP) || defined(CONFIG_RTC_DRV_OMAP_MODULE)
  56
  57#define OMAP_RTC_BASE           0xfffb4800
  58
  59static struct resource rtc_resources[] = {
  60        {
  61                .start          = OMAP_RTC_BASE,
  62                .end            = OMAP_RTC_BASE + 0x5f,
  63                .flags          = IORESOURCE_MEM,
  64        },
  65        {
  66                .start          = INT_RTC_TIMER,
  67                .flags          = IORESOURCE_IRQ,
  68        },
  69        {
  70                .start          = INT_RTC_ALARM,
  71                .flags          = IORESOURCE_IRQ,
  72        },
  73};
  74
  75static struct platform_device omap_rtc_device = {
  76        .name           = "omap_rtc",
  77        .id             = -1,
  78        .num_resources  = ARRAY_SIZE(rtc_resources),
  79        .resource       = rtc_resources,
  80};
  81
  82static void omap_init_rtc(void)
  83{
  84        (void) platform_device_register(&omap_rtc_device);
  85}
  86#else
  87static inline void omap_init_rtc(void) {}
  88#endif
  89
  90static inline void omap_init_mbox(void) { }
  91
  92/*-------------------------------------------------------------------------*/
  93
  94#if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
  95
  96static inline void omap1_mmc_mux(struct omap_mmc_platform_data *mmc_controller,
  97                        int controller_nr)
  98{
  99        if (controller_nr == 0) {
 100                if (cpu_is_omap7xx()) {
 101                        omap_cfg_reg(MMC_7XX_CMD);
 102                        omap_cfg_reg(MMC_7XX_CLK);
 103                        omap_cfg_reg(MMC_7XX_DAT0);
 104                } else {
 105                        omap_cfg_reg(MMC_CMD);
 106                        omap_cfg_reg(MMC_CLK);
 107                        omap_cfg_reg(MMC_DAT0);
 108                }
 109
 110                if (cpu_is_omap1710()) {
 111                        omap_cfg_reg(M15_1710_MMC_CLKI);
 112                        omap_cfg_reg(P19_1710_MMC_CMDDIR);
 113                        omap_cfg_reg(P20_1710_MMC_DATDIR0);
 114                }
 115                if (mmc_controller->slots[0].wires == 4 && !cpu_is_omap7xx()) {
 116                        omap_cfg_reg(MMC_DAT1);
 117                        /* NOTE: DAT2 can be on W10 (here) or M15 */
 118                        if (!mmc_controller->slots[0].nomux)
 119                                omap_cfg_reg(MMC_DAT2);
 120                        omap_cfg_reg(MMC_DAT3);
 121                }
 122        }
 123
 124        /* Block 2 is on newer chips, and has many pinout options */
 125        if (cpu_is_omap16xx() && controller_nr == 1) {
 126                if (!mmc_controller->slots[1].nomux) {
 127                        omap_cfg_reg(Y8_1610_MMC2_CMD);
 128                        omap_cfg_reg(Y10_1610_MMC2_CLK);
 129                        omap_cfg_reg(R18_1610_MMC2_CLKIN);
 130                        omap_cfg_reg(W8_1610_MMC2_DAT0);
 131                        if (mmc_controller->slots[1].wires == 4) {
 132                                omap_cfg_reg(V8_1610_MMC2_DAT1);
 133                                omap_cfg_reg(W15_1610_MMC2_DAT2);
 134                                omap_cfg_reg(R10_1610_MMC2_DAT3);
 135                        }
 136
 137                        /* These are needed for the level shifter */
 138                        omap_cfg_reg(V9_1610_MMC2_CMDDIR);
 139                        omap_cfg_reg(V5_1610_MMC2_DATDIR0);
 140                        omap_cfg_reg(W19_1610_MMC2_DATDIR1);
 141                }
 142
 143                /* Feedback clock must be set on OMAP-1710 MMC2 */
 144                if (cpu_is_omap1710())
 145                        omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
 146                                        MOD_CONF_CTRL_1);
 147        }
 148}
 149
 150#define OMAP_MMC_NR_RES         4
 151
 152/*
 153 * Register MMC devices.
 154 */
 155static int __init omap_mmc_add(const char *name, int id, unsigned long base,
 156                                unsigned long size, unsigned int irq,
 157                                unsigned rx_req, unsigned tx_req,
 158                                struct omap_mmc_platform_data *data)
 159{
 160        struct platform_device *pdev;
 161        struct resource res[OMAP_MMC_NR_RES];
 162        int ret;
 163
 164        pdev = platform_device_alloc(name, id);
 165        if (!pdev)
 166                return -ENOMEM;
 167
 168        memset(res, 0, OMAP_MMC_NR_RES * sizeof(struct resource));
 169        res[0].start = base;
 170        res[0].end = base + size - 1;
 171        res[0].flags = IORESOURCE_MEM;
 172        res[1].start = res[1].end = irq;
 173        res[1].flags = IORESOURCE_IRQ;
 174        res[2].start = rx_req;
 175        res[2].name = "rx";
 176        res[2].flags = IORESOURCE_DMA;
 177        res[3].start = tx_req;
 178        res[3].name = "tx";
 179        res[3].flags = IORESOURCE_DMA;
 180
 181        if (cpu_is_omap7xx())
 182                data->slots[0].features = MMC_OMAP7XX;
 183        if (cpu_is_omap15xx())
 184                data->slots[0].features = MMC_OMAP15XX;
 185        if (cpu_is_omap16xx())
 186                data->slots[0].features = MMC_OMAP16XX;
 187
 188        ret = platform_device_add_resources(pdev, res, ARRAY_SIZE(res));
 189        if (ret == 0)
 190                ret = platform_device_add_data(pdev, data, sizeof(*data));
 191        if (ret)
 192                goto fail;
 193
 194        ret = platform_device_add(pdev);
 195        if (ret)
 196                goto fail;
 197
 198        /* return device handle to board setup code */
 199        data->dev = &pdev->dev;
 200        return 0;
 201
 202fail:
 203        platform_device_put(pdev);
 204        return ret;
 205}
 206
 207void __init omap1_init_mmc(struct omap_mmc_platform_data **mmc_data,
 208                        int nr_controllers)
 209{
 210        int i;
 211
 212        for (i = 0; i < nr_controllers; i++) {
 213                unsigned long base, size;
 214                unsigned rx_req, tx_req;
 215                unsigned int irq = 0;
 216
 217                if (!mmc_data[i])
 218                        continue;
 219
 220                omap1_mmc_mux(mmc_data[i], i);
 221
 222                switch (i) {
 223                case 0:
 224                        base = OMAP1_MMC1_BASE;
 225                        irq = INT_MMC;
 226                        rx_req = OMAP_DMA_MMC_RX;
 227                        tx_req = OMAP_DMA_MMC_TX;
 228                        break;
 229                case 1:
 230                        if (!cpu_is_omap16xx())
 231                                return;
 232                        base = OMAP1_MMC2_BASE;
 233                        irq = INT_1610_MMC2;
 234                        rx_req = OMAP_DMA_MMC2_RX;
 235                        tx_req = OMAP_DMA_MMC2_TX;
 236                        break;
 237                default:
 238                        continue;
 239                }
 240                size = OMAP1_MMC_SIZE;
 241
 242                omap_mmc_add("mmci-omap", i, base, size, irq,
 243                                rx_req, tx_req, mmc_data[i]);
 244        }
 245}
 246
 247#endif
 248
 249/*-------------------------------------------------------------------------*/
 250
 251/* OMAP7xx SPI support */
 252#if defined(CONFIG_SPI_OMAP_100K) || defined(CONFIG_SPI_OMAP_100K_MODULE)
 253
 254struct platform_device omap_spi1 = {
 255        .name           = "omap1_spi100k",
 256        .id             = 1,
 257};
 258
 259struct platform_device omap_spi2 = {
 260        .name           = "omap1_spi100k",
 261        .id             = 2,
 262};
 263
 264static void omap_init_spi100k(void)
 265{
 266        omap_spi1.dev.platform_data = ioremap(OMAP7XX_SPI1_BASE, 0x7ff);
 267        if (omap_spi1.dev.platform_data)
 268                platform_device_register(&omap_spi1);
 269
 270        omap_spi2.dev.platform_data = ioremap(OMAP7XX_SPI2_BASE, 0x7ff);
 271        if (omap_spi2.dev.platform_data)
 272                platform_device_register(&omap_spi2);
 273}
 274
 275#else
 276static inline void omap_init_spi100k(void)
 277{
 278}
 279#endif
 280
 281
 282#define OMAP1_CAMERA_BASE       0xfffb6800
 283#define OMAP1_CAMERA_IOSIZE     0x1c
 284
 285static struct resource omap1_camera_resources[] = {
 286        [0] = {
 287                .start  = OMAP1_CAMERA_BASE,
 288                .end    = OMAP1_CAMERA_BASE + OMAP1_CAMERA_IOSIZE - 1,
 289                .flags  = IORESOURCE_MEM,
 290        },
 291        [1] = {
 292                .start  = INT_CAMERA,
 293                .flags  = IORESOURCE_IRQ,
 294        },
 295};
 296
 297static u64 omap1_camera_dma_mask = DMA_BIT_MASK(32);
 298
 299static struct platform_device omap1_camera_device = {
 300        .name           = "omap1-camera",
 301        .id             = 0, /* This is used to put cameras on this interface */
 302        .dev            = {
 303                .dma_mask               = &omap1_camera_dma_mask,
 304                .coherent_dma_mask      = DMA_BIT_MASK(32),
 305        },
 306        .num_resources  = ARRAY_SIZE(omap1_camera_resources),
 307        .resource       = omap1_camera_resources,
 308};
 309
 310void __init omap1_camera_init(void *info)
 311{
 312        struct platform_device *dev = &omap1_camera_device;
 313        int ret;
 314
 315        dev->dev.platform_data = info;
 316
 317        ret = platform_device_register(dev);
 318        if (ret)
 319                dev_err(&dev->dev, "unable to register device: %d\n", ret);
 320}
 321
 322
 323/*-------------------------------------------------------------------------*/
 324
 325static inline void omap_init_sti(void) {}
 326
 327/* Numbering for the SPI-capable controllers when used for SPI:
 328 * spi          = 1
 329 * uwire        = 2
 330 * mmc1..2      = 3..4
 331 * mcbsp1..3    = 5..7
 332 */
 333
 334#if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE)
 335
 336#define OMAP_UWIRE_BASE         0xfffb3000
 337
 338static struct resource uwire_resources[] = {
 339        {
 340                .start          = OMAP_UWIRE_BASE,
 341                .end            = OMAP_UWIRE_BASE + 0x20,
 342                .flags          = IORESOURCE_MEM,
 343        },
 344};
 345
 346static struct platform_device omap_uwire_device = {
 347        .name      = "omap_uwire",
 348        .id          = -1,
 349        .num_resources  = ARRAY_SIZE(uwire_resources),
 350        .resource       = uwire_resources,
 351};
 352
 353static void omap_init_uwire(void)
 354{
 355        /* FIXME define and use a boot tag; not all boards will be hooking
 356         * up devices to the microwire controller, and multi-board configs
 357         * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
 358         */
 359
 360        /* board-specific code must configure chipselects (only a few
 361         * are normally used) and SCLK/SDI/SDO (each has two choices).
 362         */
 363        (void) platform_device_register(&omap_uwire_device);
 364}
 365#else
 366static inline void omap_init_uwire(void) {}
 367#endif
 368
 369
 370#define OMAP1_RNG_BASE          0xfffe5000
 371
 372static struct resource omap1_rng_resources[] = {
 373        {
 374                .start          = OMAP1_RNG_BASE,
 375                .end            = OMAP1_RNG_BASE + 0x4f,
 376                .flags          = IORESOURCE_MEM,
 377        },
 378};
 379
 380static struct platform_device omap1_rng_device = {
 381        .name           = "omap_rng",
 382        .id             = -1,
 383        .num_resources  = ARRAY_SIZE(omap1_rng_resources),
 384        .resource       = omap1_rng_resources,
 385};
 386
 387static void omap1_init_rng(void)
 388{
 389        if (!cpu_is_omap16xx())
 390                return;
 391
 392        (void) platform_device_register(&omap1_rng_device);
 393}
 394
 395/*-------------------------------------------------------------------------*/
 396
 397/*
 398 * This gets called after board-specific INIT_MACHINE, and initializes most
 399 * on-chip peripherals accessible on this board (except for few like USB):
 400 *
 401 *  (a) Does any "standard config" pin muxing needed.  Board-specific
 402 *      code will have muxed GPIO pins and done "nonstandard" setup;
 403 *      that code could live in the boot loader.
 404 *  (b) Populating board-specific platform_data with the data drivers
 405 *      rely on to handle wiring variations.
 406 *  (c) Creating platform devices as meaningful on this board and
 407 *      with this kernel configuration.
 408 *
 409 * Claiming GPIOs, and setting their direction and initial values, is the
 410 * responsibility of the device drivers.  So is responding to probe().
 411 *
 412 * Board-specific knowledge like creating devices or pin setup is to be
 413 * kept out of drivers as much as possible.  In particular, pin setup
 414 * may be handled by the boot loader, and drivers should expect it will
 415 * normally have been done by the time they're probed.
 416 */
 417static int __init omap1_init_devices(void)
 418{
 419        if (!cpu_class_is_omap1())
 420                return -ENODEV;
 421
 422        omap_sram_init();
 423        omap1_clk_late_init();
 424
 425        /* please keep these calls, and their implementations above,
 426         * in alphabetical order so they're easier to sort through.
 427         */
 428
 429        omap_init_audio();
 430        omap_init_mbox();
 431        omap_init_rtc();
 432        omap_init_spi100k();
 433        omap_init_sti();
 434        omap_init_uwire();
 435        omap1_init_rng();
 436
 437        return 0;
 438}
 439arch_initcall(omap1_init_devices);
 440
 441#if defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
 442
 443static struct resource wdt_resources[] = {
 444        {
 445                .start          = 0xfffeb000,
 446                .end            = 0xfffeb07F,
 447                .flags          = IORESOURCE_MEM,
 448        },
 449};
 450
 451static struct platform_device omap_wdt_device = {
 452        .name           = "omap_wdt",
 453        .id             = -1,
 454        .num_resources  = ARRAY_SIZE(wdt_resources),
 455        .resource       = wdt_resources,
 456};
 457
 458static int __init omap_init_wdt(void)
 459{
 460        struct omap_wd_timer_platform_data pdata;
 461        int ret;
 462
 463        if (!cpu_is_omap16xx())
 464                return -ENODEV;
 465
 466        pdata.read_reset_sources = omap1_get_reset_sources;
 467
 468        ret = platform_device_register(&omap_wdt_device);
 469        if (!ret) {
 470                ret = platform_device_add_data(&omap_wdt_device, &pdata,
 471                                               sizeof(pdata));
 472                if (ret)
 473                        platform_device_del(&omap_wdt_device);
 474        }
 475
 476        return ret;
 477}
 478subsys_initcall(omap_init_wdt);
 479#endif
 480