edmini_v2-setup.c

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/*
 * arch/arm/mach-orion5x/edmini_v2-setup.c
 *
 * LaCie Ethernet Disk mini V2 Setup
 *
 * Copyright (C) 2008 Christopher Moore <[email protected]>
 * Copyright (C) 2008 Albert Aribaud <[email protected]>
 *
 * This file is licensed under the terms of the GNU General Public
 * License version 2. This program is licensed "as is" without any
 * warranty of any kind, whether express or implied.
 */

/*
 * TODO: add Orion USB device port init when kernel.org support is added.
 * TODO: add flash write support: see below.
 * TODO: add power-off support.
 * TODO: add I2C EEPROM support.
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/pci.h>
#include <linux/irq.h>
#include <linux/mtd/physmap.h>
#include <linux/mv643xx_eth.h>
#include <linux/leds.h>
#include <linux/gpio_keys.h>
#include <linux/input.h>
#include <linux/i2c.h>
#include <linux/ata_platform.h>
#include <linux/gpio.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/pci.h>
#include <mach/orion5x.h>
#include "common.h"
#include "mpp.h"

/*****************************************************************************
 * EDMINI_V2 Info
 ****************************************************************************/

/*
 * 512KB NOR flash Device bus boot chip select
 */

#define EDMINI_V2_NOR_BOOT_BASE     0xfff80000
#define EDMINI_V2_NOR_BOOT_SIZE     SZ_512K

/*****************************************************************************
 * 512KB NOR Flash on BOOT Device
 ****************************************************************************/

/*
 * Currently the MTD code does not recognize the MX29LV400CBCT as a bottom
 * -type device. This could cause risks of accidentally erasing critical
 * flash sectors. We thus define a single, write-protected partition covering
 * the whole flash.
 * TODO: once the flash part TOP/BOTTOM detection issue is sorted out in the MTD
 * code, break this into at least three partitions: 'u-boot code', 'u-boot
 * environment' and 'whatever is left'.
 */

static struct mtd_partition edmini_v2_partitions[] = {
    {
        .name       = "Full512kb",
        .size       = 0x00080000,
        .offset     = 0x00000000,
        .mask_flags = MTD_WRITEABLE,
    },
};

static struct physmap_flash_data edmini_v2_nor_flash_data = {
    .width      = 1,
    .parts      = edmini_v2_partitions,
    .nr_parts   = ARRAY_SIZE(edmini_v2_partitions),
};

static struct resource edmini_v2_nor_flash_resource = {
    .flags          = IORESOURCE_MEM,
    .start          = EDMINI_V2_NOR_BOOT_BASE,
    .end            = EDMINI_V2_NOR_BOOT_BASE
        + EDMINI_V2_NOR_BOOT_SIZE - 1,
};

static struct platform_device edmini_v2_nor_flash = {
    .name           = "physmap-flash",
    .id         = 0,
    .dev        = {
        .platform_data  = &edmini_v2_nor_flash_data,
    },
    .num_resources      = 1,
    .resource       = &edmini_v2_nor_flash_resource,
};

/*****************************************************************************
 * Ethernet
 ****************************************************************************/

static struct mv643xx_eth_platform_data edmini_v2_eth_data = {
    .phy_addr   = 8,
};

/*****************************************************************************
 * RTC 5C372a on I2C bus
 ****************************************************************************/

#define EDMINIV2_RTC_GPIO   3

static struct i2c_board_info __initdata edmini_v2_i2c_rtc = {
    I2C_BOARD_INFO("rs5c372a", 0x32),
    .irq = 0,
};

/*****************************************************************************
 * Sata
 ****************************************************************************/

static struct mv_sata_platform_data edmini_v2_sata_data = {
    .n_ports    = 2,
};

/*****************************************************************************
 * GPIO LED (simple - doesn't use hardware blinking support)
 ****************************************************************************/

#define EDMINI_V2_GPIO_LED_POWER    16

static struct gpio_led edmini_v2_leds[] = {
    {
        .name = "power:blue",
        .gpio = EDMINI_V2_GPIO_LED_POWER,
        .active_low = 1,
    },
};

static struct gpio_led_platform_data edmini_v2_led_data = {
    .num_leds = ARRAY_SIZE(edmini_v2_leds),
    .leds = edmini_v2_leds,
};

static struct platform_device edmini_v2_gpio_leds = {
    .name           = "leds-gpio",
    .id             = -1,
    .dev            = {
        .platform_data  = &edmini_v2_led_data,
    },
};

/****************************************************************************
 * GPIO key
 ****************************************************************************/

#define EDMINI_V2_GPIO_KEY_POWER    18

static struct gpio_keys_button edmini_v2_buttons[] = {
    {
        .code       = KEY_POWER,
        .gpio       = EDMINI_V2_GPIO_KEY_POWER,
        .desc       = "Power Button",
        .active_low = 0,
    },
};

static struct gpio_keys_platform_data edmini_v2_button_data = {
    .buttons    = edmini_v2_buttons,
    .nbuttons   = ARRAY_SIZE(edmini_v2_buttons),
};

static struct platform_device edmini_v2_gpio_buttons = {
    .name       = "gpio-keys",
    .id     = -1,
    .dev        = {
        .platform_data  = &edmini_v2_button_data,
    },
};

/*****************************************************************************
 * General Setup
 ****************************************************************************/
static unsigned int edminiv2_mpp_modes[] __initdata = {
    MPP0_UNUSED,
    MPP1_UNUSED,
    MPP2_UNUSED,
    MPP3_GPIO,  /* RTC interrupt */
    MPP4_UNUSED,
    MPP5_UNUSED,
    MPP6_UNUSED,
    MPP7_UNUSED,
    MPP8_UNUSED,
    MPP9_UNUSED,
    MPP10_UNUSED,
    MPP11_UNUSED,
    MPP12_SATA_LED, /* SATA 0 presence */
    MPP13_SATA_LED, /* SATA 1 presence */
    MPP14_SATA_LED, /* SATA 0 active */
    MPP15_SATA_LED, /* SATA 1 active */
    /* 16: Power LED control (0 = On, 1 = Off) */
    MPP16_GPIO,
    /* 17: Power LED control select (0 = CPLD, 1 = GPIO16) */
    MPP17_GPIO,
    /* 18: Power button status (0 = Released, 1 = Pressed) */
    MPP18_GPIO,
    MPP19_UNUSED,
    0,
};

static void __init edmini_v2_init(void)
{
    /*
     * Setup basic Orion functions. Need to be called early.
     */
    orion5x_init();

    orion5x_mpp_conf(edminiv2_mpp_modes);

    /*
     * Configure peripherals.
     */
    orion5x_ehci0_init();
    orion5x_eth_init(&edmini_v2_eth_data);
    orion5x_i2c_init();
    orion5x_sata_init(&edmini_v2_sata_data);
    orion5x_uart0_init();

    orion5x_setup_dev_boot_win(EDMINI_V2_NOR_BOOT_BASE,
                EDMINI_V2_NOR_BOOT_SIZE);
    platform_device_register(&edmini_v2_nor_flash);
    platform_device_register(&edmini_v2_gpio_leds);
    platform_device_register(&edmini_v2_gpio_buttons);

    pr_notice("edmini_v2: USB device port, flash write and power-off "
          "are not yet supported.\n");

    /* Get RTC IRQ and register the chip */
    if (gpio_request(EDMINIV2_RTC_GPIO, "rtc") == 0) {
        if (gpio_direction_input(EDMINIV2_RTC_GPIO) == 0)
            edmini_v2_i2c_rtc.irq = gpio_to_irq(EDMINIV2_RTC_GPIO);
        else
            gpio_free(EDMINIV2_RTC_GPIO);
    }

    if (edmini_v2_i2c_rtc.irq == 0)
        pr_warning("edmini_v2: failed to get RTC IRQ\n");

    i2c_register_board_info(0, &edmini_v2_i2c_rtc, 1);
}

/* Warning: LaCie use a wrong mach-type (0x20e=526) in their bootloader. */
MACHINE_START(EDMINI_V2, "LaCie Ethernet Disk mini V2")
    /* Maintainer: Christopher Moore <[email protected]> */
    .atag_offset    = 0x100,
    .init_machine   = edmini_v2_init,
    .map_io     = orion5x_map_io,
    .init_early = orion5x_init_early,
    .init_irq   = orion5x_init_irq,
    .timer      = &orion5x_timer,
    .fixup      = tag_fixup_mem32,
    .restart    = orion5x_restart,
MACHINE_END