Logo Search packages:      
Sourcecode: linux version File versions  Download package

devices.c

/*
 * linux/arch/arm/mach-omap1/devices.c
 *
 * OMAP1 platform device setup/initialization
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */

#include <linux/dma-mapping.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/spi/spi.h>

#include <mach/camera.h>
#include <mach/hardware.h>
#include <asm/mach/map.h>

#include <plat/tc.h>
#include <plat/board.h>
#include <plat/mux.h>
#include <mach/gpio.h>
#include <plat/mmc.h>
#include <plat/omap7xx.h>
#include <plat/mcbsp.h>

/*-------------------------------------------------------------------------*/

#if defined(CONFIG_RTC_DRV_OMAP) || defined(CONFIG_RTC_DRV_OMAP_MODULE)

#define     OMAP_RTC_BASE           0xfffb4800

static struct resource rtc_resources[] = {
      {
            .start            = OMAP_RTC_BASE,
            .end        = OMAP_RTC_BASE + 0x5f,
            .flags            = IORESOURCE_MEM,
      },
      {
            .start            = INT_RTC_TIMER,
            .flags            = IORESOURCE_IRQ,
      },
      {
            .start            = INT_RTC_ALARM,
            .flags            = IORESOURCE_IRQ,
      },
};

static struct platform_device omap_rtc_device = {
      .name           = "omap_rtc",
      .id             = -1,
      .num_resources    = ARRAY_SIZE(rtc_resources),
      .resource   = rtc_resources,
};

static void omap_init_rtc(void)
{
      (void) platform_device_register(&omap_rtc_device);
}
#else
static inline void omap_init_rtc(void) {}
#endif

static inline void omap_init_mbox(void) { }

/*-------------------------------------------------------------------------*/

#if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)

static inline void omap1_mmc_mux(struct omap_mmc_platform_data *mmc_controller,
                  int controller_nr)
{
      if (controller_nr == 0) {
            if (cpu_is_omap7xx()) {
                  omap_cfg_reg(MMC_7XX_CMD);
                  omap_cfg_reg(MMC_7XX_CLK);
                  omap_cfg_reg(MMC_7XX_DAT0);
            } else {
                  omap_cfg_reg(MMC_CMD);
                  omap_cfg_reg(MMC_CLK);
                  omap_cfg_reg(MMC_DAT0);
            }

            if (cpu_is_omap1710()) {
                  omap_cfg_reg(M15_1710_MMC_CLKI);
                  omap_cfg_reg(P19_1710_MMC_CMDDIR);
                  omap_cfg_reg(P20_1710_MMC_DATDIR0);
            }
            if (mmc_controller->slots[0].wires == 4 && !cpu_is_omap7xx()) {
                  omap_cfg_reg(MMC_DAT1);
                  /* NOTE: DAT2 can be on W10 (here) or M15 */
                  if (!mmc_controller->slots[0].nomux)
                        omap_cfg_reg(MMC_DAT2);
                  omap_cfg_reg(MMC_DAT3);
            }
      }

      /* Block 2 is on newer chips, and has many pinout options */
      if (cpu_is_omap16xx() && controller_nr == 1) {
            if (!mmc_controller->slots[1].nomux) {
                  omap_cfg_reg(Y8_1610_MMC2_CMD);
                  omap_cfg_reg(Y10_1610_MMC2_CLK);
                  omap_cfg_reg(R18_1610_MMC2_CLKIN);
                  omap_cfg_reg(W8_1610_MMC2_DAT0);
                  if (mmc_controller->slots[1].wires == 4) {
                        omap_cfg_reg(V8_1610_MMC2_DAT1);
                        omap_cfg_reg(W15_1610_MMC2_DAT2);
                        omap_cfg_reg(R10_1610_MMC2_DAT3);
                  }

                  /* These are needed for the level shifter */
                  omap_cfg_reg(V9_1610_MMC2_CMDDIR);
                  omap_cfg_reg(V5_1610_MMC2_DATDIR0);
                  omap_cfg_reg(W19_1610_MMC2_DATDIR1);
            }

            /* Feedback clock must be set on OMAP-1710 MMC2 */
            if (cpu_is_omap1710())
                  omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
                              MOD_CONF_CTRL_1);
      }
}

void __init omap1_init_mmc(struct omap_mmc_platform_data **mmc_data,
                  int nr_controllers)
{
      int i;

      for (i = 0; i < nr_controllers; i++) {
            unsigned long base, size;
            unsigned int irq = 0;

            if (!mmc_data[i])
                  continue;

            omap1_mmc_mux(mmc_data[i], i);

            switch (i) {
            case 0:
                  base = OMAP1_MMC1_BASE;
                  irq = INT_MMC;
                  break;
            case 1:
                  if (!cpu_is_omap16xx())
                        return;
                  base = OMAP1_MMC2_BASE;
                  irq = INT_1610_MMC2;
                  break;
            default:
                  continue;
            }
            size = OMAP1_MMC_SIZE;

            omap_mmc_add("mmci-omap", i, base, size, irq, mmc_data[i]);
      };
}

#endif

/*-------------------------------------------------------------------------*/

/* OMAP7xx SPI support */
#if defined(CONFIG_SPI_OMAP_100K) || defined(CONFIG_SPI_OMAP_100K_MODULE)

struct platform_device omap_spi1 = {
      .name           = "omap1_spi100k",
      .id             = 1,
};

struct platform_device omap_spi2 = {
      .name           = "omap1_spi100k",
      .id             = 2,
};

static void omap_init_spi100k(void)
{
      omap_spi1.dev.platform_data = ioremap(OMAP7XX_SPI1_BASE, 0x7ff);
      if (omap_spi1.dev.platform_data)
            platform_device_register(&omap_spi1);

      omap_spi2.dev.platform_data = ioremap(OMAP7XX_SPI2_BASE, 0x7ff);
      if (omap_spi2.dev.platform_data)
            platform_device_register(&omap_spi2);
}

#else
static inline void omap_init_spi100k(void)
{
}
#endif


#define OMAP1_CAMERA_BASE     0xfffb6800
#define OMAP1_CAMERA_IOSIZE   0x1c

static struct resource omap1_camera_resources[] = {
      [0] = {
            .start      = OMAP1_CAMERA_BASE,
            .end  = OMAP1_CAMERA_BASE + OMAP1_CAMERA_IOSIZE - 1,
            .flags      = IORESOURCE_MEM,
      },
      [1] = {
            .start      = INT_CAMERA,
            .flags      = IORESOURCE_IRQ,
      },
};

static u64 omap1_camera_dma_mask = DMA_BIT_MASK(32);

static struct platform_device omap1_camera_device = {
      .name       = "omap1-camera",
      .id         = 0, /* This is used to put cameras on this interface */
      .dev        = {
            .dma_mask         = &omap1_camera_dma_mask,
            .coherent_dma_mask      = DMA_BIT_MASK(32),
      },
      .num_resources    = ARRAY_SIZE(omap1_camera_resources),
      .resource   = omap1_camera_resources,
};

void __init omap1_camera_init(void *info)
{
      struct platform_device *dev = &omap1_camera_device;
      int ret;

      dev->dev.platform_data = info;

      ret = platform_device_register(dev);
      if (ret)
            dev_err(&dev->dev, "unable to register device: %d\n", ret);
}


/*-------------------------------------------------------------------------*/

static inline void omap_init_sti(void) {}

#if defined(CONFIG_SND_SOC) || defined(CONFIG_SND_SOC_MODULE)

static struct platform_device omap_pcm = {
      .name = "omap-pcm-audio",
      .id   = -1,
};

OMAP_MCBSP_PLATFORM_DEVICE(1);
OMAP_MCBSP_PLATFORM_DEVICE(2);
OMAP_MCBSP_PLATFORM_DEVICE(3);

static void omap_init_audio(void)
{
      platform_device_register(&omap_mcbsp1);
      platform_device_register(&omap_mcbsp2);
      if (!cpu_is_omap7xx())
            platform_device_register(&omap_mcbsp3);
      platform_device_register(&omap_pcm);
}

#else
static inline void omap_init_audio(void) {}
#endif

/*-------------------------------------------------------------------------*/

/*
 * This gets called after board-specific INIT_MACHINE, and initializes most
 * on-chip peripherals accessible on this board (except for few like USB):
 *
 *  (a) Does any "standard config" pin muxing needed.  Board-specific
 *    code will have muxed GPIO pins and done "nonstandard" setup;
 *    that code could live in the boot loader.
 *  (b) Populating board-specific platform_data with the data drivers
 *    rely on to handle wiring variations.
 *  (c) Creating platform devices as meaningful on this board and
 *    with this kernel configuration.
 *
 * Claiming GPIOs, and setting their direction and initial values, is the
 * responsibility of the device drivers.  So is responding to probe().
 *
 * Board-specific knowlege like creating devices or pin setup is to be
 * kept out of drivers as much as possible.  In particular, pin setup
 * may be handled by the boot loader, and drivers should expect it will
 * normally have been done by the time they're probed.
 */
static int __init omap1_init_devices(void)
{
      if (!cpu_class_is_omap1())
            return -ENODEV;

      /* please keep these calls, and their implementations above,
       * in alphabetical order so they're easier to sort through.
       */

      omap_init_mbox();
      omap_init_rtc();
      omap_init_spi100k();
      omap_init_sti();
      omap_init_audio();

      return 0;
}
arch_initcall(omap1_init_devices);

#if defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)

static struct resource wdt_resources[] = {
      {
            .start            = 0xfffeb000,
            .end        = 0xfffeb07F,
            .flags            = IORESOURCE_MEM,
      },
};

static struct platform_device omap_wdt_device = {
      .name    = "omap_wdt",
      .id        = -1,
      .num_resources    = ARRAY_SIZE(wdt_resources),
      .resource   = wdt_resources,
};

static int __init omap_init_wdt(void)
{
      if (!cpu_is_omap16xx())
            return -ENODEV;

      return platform_device_register(&omap_wdt_device);
}
subsys_initcall(omap_init_wdt);
#endif

Generated by  Doxygen 1.6.0   Back to index