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devices.c

/*
 * linux/arch/arm/mach-omap2/devices.c
 *
 * OMAP2 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/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>

#include <mach/hardware.h>
#include <asm/io.h>
#include <asm/mach-types.h>
#include <asm/mach/map.h>

#include <mach/tc.h>
#include <mach/board.h>
#include <mach/mux.h>
#include <mach/gpio.h>

#if   defined(CONFIG_I2C_OMAP) || defined(CONFIG_I2C_OMAP_MODULE)

#define OMAP2_I2C_BASE2       0x48072000
#define OMAP2_I2C_INT2        57

static struct resource i2c_resources2[] = {
      {
            .start            = OMAP2_I2C_BASE2,
            .end        = OMAP2_I2C_BASE2 + 0x3f,
            .flags            = IORESOURCE_MEM,
      },
      {
            .start            = OMAP2_I2C_INT2,
            .flags            = IORESOURCE_IRQ,
      },
};

static struct platform_device omap_i2c_device2 = {
      .name           = "i2c_omap",
      .id             = 2,
      .num_resources    = ARRAY_SIZE(i2c_resources2),
      .resource   = i2c_resources2,
};

/* See also arch/arm/plat-omap/devices.c for first I2C on 24xx */
static void omap_init_i2c(void)
{
      /* REVISIT: Second I2C not in use on H4? */
      if (machine_is_omap_h4())
            return;

      if (!cpu_is_omap2430()) {
            omap_cfg_reg(J15_24XX_I2C2_SCL);
            omap_cfg_reg(H19_24XX_I2C2_SDA);
      }
      (void) platform_device_register(&omap_i2c_device2);
}

#else

static void omap_init_i2c(void) {}

#endif

#if defined(CONFIG_OMAP_DSP) || defined(CONFIG_OMAP_DSP_MODULE)
#define OMAP2_MBOX_BASE       IO_ADDRESS(OMAP24XX_MAILBOX_BASE)

static struct resource mbox_resources[] = {
      {
            .start            = OMAP2_MBOX_BASE,
            .end        = OMAP2_MBOX_BASE + 0x11f,
            .flags            = IORESOURCE_MEM,
      },
      {
            .start            = INT_24XX_MAIL_U0_MPU,
            .flags            = IORESOURCE_IRQ,
      },
      {
            .start            = INT_24XX_MAIL_U3_MPU,
            .flags            = IORESOURCE_IRQ,
      },
};

static struct platform_device mbox_device = {
      .name       = "mailbox",
      .id         = -1,
      .num_resources    = ARRAY_SIZE(mbox_resources),
      .resource   = mbox_resources,
};

static inline void omap_init_mbox(void)
{
      platform_device_register(&mbox_device);
}
#else
static inline void omap_init_mbox(void) { }
#endif

#if defined(CONFIG_OMAP_STI)

#define OMAP2_STI_BASE        IO_ADDRESS(0x48068000)
#define OMAP2_STI_CHANNEL_BASE      0x54000000
#define OMAP2_STI_IRQ         4

static struct resource sti_resources[] = {
      {
            .start            = OMAP2_STI_BASE,
            .end        = OMAP2_STI_BASE + 0x7ff,
            .flags            = IORESOURCE_MEM,
      },
      {
            .start            = OMAP2_STI_CHANNEL_BASE,
            .end        = OMAP2_STI_CHANNEL_BASE + SZ_64K - 1,
            .flags            = IORESOURCE_MEM,
      },
      {
            .start            = OMAP2_STI_IRQ,
            .flags            = IORESOURCE_IRQ,
      }
};

static struct platform_device sti_device = {
      .name       = "sti",
      .id         = -1,
      .num_resources    = ARRAY_SIZE(sti_resources),
      .resource   = sti_resources,
};

static inline void omap_init_sti(void)
{
      platform_device_register(&sti_device);
}
#else
static inline void omap_init_sti(void) {}
#endif

#if defined(CONFIG_SPI_OMAP24XX)

#include <mach/mcspi.h>

#define OMAP2_MCSPI1_BASE           0x48098000
#define OMAP2_MCSPI2_BASE           0x4809a000

static struct omap2_mcspi_platform_config omap2_mcspi1_config = {
      .num_cs           = 4,
};

static struct resource omap2_mcspi1_resources[] = {
      {
            .start            = OMAP2_MCSPI1_BASE,
            .end        = OMAP2_MCSPI1_BASE + 0xff,
            .flags            = IORESOURCE_MEM,
      },
};

struct platform_device omap2_mcspi1 = {
      .name       = "omap2_mcspi",
      .id         = 1,
      .num_resources    = ARRAY_SIZE(omap2_mcspi1_resources),
      .resource   = omap2_mcspi1_resources,
      .dev        = {
            .platform_data = &omap2_mcspi1_config,
      },
};

static struct omap2_mcspi_platform_config omap2_mcspi2_config = {
      .num_cs           = 2,
};

static struct resource omap2_mcspi2_resources[] = {
      {
            .start            = OMAP2_MCSPI2_BASE,
            .end        = OMAP2_MCSPI2_BASE + 0xff,
            .flags            = IORESOURCE_MEM,
      },
};

struct platform_device omap2_mcspi2 = {
      .name       = "omap2_mcspi",
      .id         = 2,
      .num_resources    = ARRAY_SIZE(omap2_mcspi2_resources),
      .resource   = omap2_mcspi2_resources,
      .dev        = {
            .platform_data = &omap2_mcspi2_config,
      },
};

static void omap_init_mcspi(void)
{
      platform_device_register(&omap2_mcspi1);
      platform_device_register(&omap2_mcspi2);
}

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

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

static int __init omap2_init_devices(void)
{
      /* please keep these calls, and their implementations above,
       * in alphabetical order so they're easier to sort through.
       */
      omap_init_i2c();
      omap_init_mbox();
      omap_init_mcspi();
      omap_init_sti();

      return 0;
}
arch_initcall(omap2_init_devices);

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