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nslu2-setup.c

/*
 * arch/arm/mach-ixp4xx/nslu2-setup.c
 *
 * NSLU2 board-setup
 *
 * based ixdp425-setup.c:
 *      Copyright (C) 2003-2004 MontaVista Software, Inc.
 *
 * Author: Mark Rakes <mrakes at mac.com>
 * Author: Rod Whitby <rod@whitby.id.au>
 * Maintainers: http://www.nslu2-linux.org/
 *
 * Fixed missing init_time in MACHINE_START kas11 10/22/04
 * Changed to conform to new style __init ixdp425 kas11 10/22/04
 */

#include <linux/kernel.h>
#include <linux/serial.h>
#include <linux/serial_8250.h>
#include <linux/leds.h>

#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/flash.h>

static struct flash_platform_data nslu2_flash_data = {
      .map_name         = "cfi_probe",
      .width                  = 2,
};

static struct resource nslu2_flash_resource = {
      .flags                  = IORESOURCE_MEM,
};

static struct platform_device nslu2_flash = {
      .name             = "IXP4XX-Flash",
      .id               = 0,
      .dev.platform_data      = &nslu2_flash_data,
      .num_resources          = 1,
      .resource         = &nslu2_flash_resource,
};

static struct ixp4xx_i2c_pins nslu2_i2c_gpio_pins = {
      .sda_pin          = NSLU2_SDA_PIN,
      .scl_pin          = NSLU2_SCL_PIN,
};

#ifdef CONFIG_LEDS_IXP4XX
static struct resource nslu2_led_resources[] = {
      {
            .name       = "ready",  /* green led */
            .start            = NSLU2_LED_GRN,
            .end        = NSLU2_LED_GRN,
            .flags            = IXP4XX_GPIO_HIGH,
      },
      {
            .name       = "status", /* red led */
            .start            = NSLU2_LED_RED,
            .end        = NSLU2_LED_RED,
            .flags            = IXP4XX_GPIO_HIGH,
      },
      {
            .name       = "disk-1",
            .start            = NSLU2_LED_DISK1,
            .end        = NSLU2_LED_DISK1,
            .flags            = IXP4XX_GPIO_LOW,
      },
      {
            .name       = "disk-2",
            .start            = NSLU2_LED_DISK2,
            .end        = NSLU2_LED_DISK2,
            .flags            = IXP4XX_GPIO_LOW,
      },
};

static struct platform_device nslu2_leds = {
      .name             = "IXP4XX-GPIO-LED",
      .id               = -1,
      .num_resources          = ARRAY_SIZE(nslu2_led_resources),
      .resource         = nslu2_led_resources,
};
#endif

static struct platform_device nslu2_i2c_controller = {
      .name             = "IXP4XX-I2C",
      .id               = 0,
      .dev.platform_data      = &nslu2_i2c_gpio_pins,
      .num_resources          = 0,
};

static struct platform_device nslu2_beeper = {
      .name             = "ixp4xx-beeper",
      .id               = NSLU2_GPIO_BUZZ,
      .num_resources          = 0,
};

static struct resource nslu2_uart_resources[] = {
      {
            .start            = IXP4XX_UART1_BASE_PHYS,
            .end        = IXP4XX_UART1_BASE_PHYS + 0x0fff,
            .flags            = IORESOURCE_MEM,
      },
      {
            .start            = IXP4XX_UART2_BASE_PHYS,
            .end        = IXP4XX_UART2_BASE_PHYS + 0x0fff,
            .flags            = IORESOURCE_MEM,
      }
};

static struct plat_serial8250_port nslu2_uart_data[] = {
      {
            .mapbase    = IXP4XX_UART1_BASE_PHYS,
            .membase    = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
            .irq        = IRQ_IXP4XX_UART1,
            .flags            = UPF_BOOT_AUTOCONF,
            .iotype           = UPIO_MEM,
            .regshift   = 2,
            .uartclk    = IXP4XX_UART_XTAL,
      },
      {
            .mapbase    = IXP4XX_UART2_BASE_PHYS,
            .membase    = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
            .irq        = IRQ_IXP4XX_UART2,
            .flags            = UPF_BOOT_AUTOCONF,
            .iotype           = UPIO_MEM,
            .regshift   = 2,
            .uartclk    = IXP4XX_UART_XTAL,
      },
      { }
};

static struct platform_device nslu2_uart = {
      .name             = "serial8250",
      .id               = PLAT8250_DEV_PLATFORM,
      .dev.platform_data      = nslu2_uart_data,
      .num_resources          = 2,
      .resource         = nslu2_uart_resources,
};

static struct platform_device *nslu2_devices[] __initdata = {
      &nslu2_i2c_controller,
      &nslu2_flash,
      &nslu2_beeper,
#ifdef CONFIG_LEDS_IXP4XX
      &nslu2_leds,
#endif
};

static void nslu2_power_off(void)
{
      /* This causes the box to drop the power and go dead. */

      /* enable the pwr cntl gpio */
      gpio_line_config(NSLU2_PO_GPIO, IXP4XX_GPIO_OUT);

      /* do the deed */
      gpio_line_set(NSLU2_PO_GPIO, IXP4XX_GPIO_HIGH);
}

static void __init nslu2_init(void)
{
      ixp4xx_sys_init();

      nslu2_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
      nslu2_flash_resource.end =
            IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;

      pm_power_off = nslu2_power_off;

      /* This is only useful on a modified machine, but it is valuable
       * to have it first in order to see debug messages, and so that
       * it does *not* get removed if platform_add_devices fails!
       */
      (void)platform_device_register(&nslu2_uart);

      platform_add_devices(nslu2_devices, ARRAY_SIZE(nslu2_devices));
}

MACHINE_START(NSLU2, "Linksys NSLU2")
      /* Maintainer: www.nslu2-linux.org */
      .phys_io    = IXP4XX_PERIPHERAL_BASE_PHYS,
      .io_pg_offst      = ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xFFFC,
      .boot_params      = 0x00000100,
      .map_io           = ixp4xx_map_io,
      .init_irq   = ixp4xx_init_irq,
      .timer          = &ixp4xx_timer,
      .init_machine     = nslu2_init,
MACHINE_END

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