mss2-setup.c

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/*
 * Maxtor Shared Storage II Board Setup
 *
 * Maintainer: Sylver Bruneau <[email protected]>
 *
 * 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/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 <mach/bridge-regs.h>
#include "common.h"
#include "mpp.h"

#define MSS2_NOR_BOOT_BASE  0xff800000
#define MSS2_NOR_BOOT_SIZE  SZ_256K

/*****************************************************************************
 * Maxtor Shared Storage II Info
 ****************************************************************************/

/*
 * Maxtor Shared Storage II hardware :
 * - Marvell 88F5182-A2 C500
 * - Marvell 88E1111 Gigabit Ethernet PHY
 * - RTC M41T81 (@0x68) on I2C bus
 * - 256KB NOR flash
 * - 64MB of RAM
 */

/*****************************************************************************
 * 256KB NOR Flash on BOOT Device
 ****************************************************************************/

static struct physmap_flash_data mss2_nor_flash_data = {
    .width      = 1,
};

static struct resource mss2_nor_flash_resource = {
    .flags      = IORESOURCE_MEM,
    .start      = MSS2_NOR_BOOT_BASE,
    .end        = MSS2_NOR_BOOT_BASE + MSS2_NOR_BOOT_SIZE - 1,
};

static struct platform_device mss2_nor_flash = {
    .name       = "physmap-flash",
    .id     = 0,
    .dev        = {
        .platform_data  = &mss2_nor_flash_data,
    },
    .resource   = &mss2_nor_flash_resource,
    .num_resources  = 1,
};

/****************************************************************************
 * PCI setup
 ****************************************************************************/
static int __init mss2_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
{
    int irq;

    /*
     * Check for devices with hard-wired IRQs.
     */
    irq = orion5x_pci_map_irq(dev, slot, pin);
    if (irq != -1)
        return irq;

    return -1;
}

static struct hw_pci mss2_pci __initdata = {
    .nr_controllers = 2,
    .setup      = orion5x_pci_sys_setup,
    .scan       = orion5x_pci_sys_scan_bus,
    .map_irq    = mss2_pci_map_irq,
};

static int __init mss2_pci_init(void)
{
    if (machine_is_mss2())
        pci_common_init(&mss2_pci);

    return 0;
}
subsys_initcall(mss2_pci_init);


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

static struct mv643xx_eth_platform_data mss2_eth_data = {
    .phy_addr   = MV643XX_ETH_PHY_ADDR(8),
};

/*****************************************************************************
 * SATA
 ****************************************************************************/

static struct mv_sata_platform_data mss2_sata_data = {
    .n_ports    = 2,
};

/*****************************************************************************
 * GPIO buttons
 ****************************************************************************/

#define MSS2_GPIO_KEY_RESET 12
#define MSS2_GPIO_KEY_POWER 11

static struct gpio_keys_button mss2_buttons[] = {
    {
        .code       = KEY_POWER,
        .gpio       = MSS2_GPIO_KEY_POWER,
        .desc       = "Power",
        .active_low = 1,
    }, {
        .code       = KEY_RESTART,
        .gpio       = MSS2_GPIO_KEY_RESET,
        .desc       = "Reset",
        .active_low = 1,
    },
};

static struct gpio_keys_platform_data mss2_button_data = {
    .buttons    = mss2_buttons,
    .nbuttons   = ARRAY_SIZE(mss2_buttons),
};

static struct platform_device mss2_button_device = {
    .name       = "gpio-keys",
    .id     = -1,
    .dev        = {
        .platform_data  = &mss2_button_data,
    },
};

/*****************************************************************************
 * RTC m41t81 on I2C bus
 ****************************************************************************/

#define MSS2_GPIO_RTC_IRQ   3

static struct i2c_board_info __initdata mss2_i2c_rtc = {
    I2C_BOARD_INFO("m41t81", 0x68),
};

/*****************************************************************************
 * MSS2 power off method
 ****************************************************************************/
/*
 * On the Maxtor Shared Storage II, the shutdown process is the following :
 * - Userland modifies U-boot env to tell U-boot to go idle at next boot
 * - The board reboots
 * - U-boot starts and go into an idle mode until the user press "power"
 */
static void mss2_power_off(void)
{
    u32 reg;

    /*
     * Enable and issue soft reset
     */
    reg = readl(RSTOUTn_MASK);
    reg |= 1 << 2;
    writel(reg, RSTOUTn_MASK);

    reg = readl(CPU_SOFT_RESET);
    reg |= 1;
    writel(reg, CPU_SOFT_RESET);
}

/****************************************************************************
 * General Setup
 ****************************************************************************/
static unsigned int mss2_mpp_modes[] __initdata = {
    MPP0_GPIO,      /* Power LED */
    MPP1_GPIO,      /* Error LED */
    MPP2_UNUSED,
    MPP3_GPIO,      /* RTC interrupt */
    MPP4_GPIO,      /* HDD ind. (Single/Dual)*/
    MPP5_GPIO,      /* HD0 5V control */
    MPP6_GPIO,      /* HD0 12V control */
    MPP7_GPIO,      /* HD1 5V control */
    MPP8_GPIO,      /* HD1 12V control */
    MPP9_UNUSED,
    MPP10_GPIO,     /* Fan control */
    MPP11_GPIO,     /* Power button */
    MPP12_GPIO,     /* Reset button */
    MPP13_UNUSED,
    MPP14_SATA_LED,     /* SATA 0 active */
    MPP15_SATA_LED,     /* SATA 1 active */
    MPP16_UNUSED,
    MPP17_UNUSED,
    MPP18_UNUSED,
    MPP19_UNUSED,
    0,
};

static void __init mss2_init(void)
{
    /* Setup basic Orion functions. Need to be called early. */
    orion5x_init();

    orion5x_mpp_conf(mss2_mpp_modes);

    /*
     * MPP[20] Unused
     * MPP[21] PCI clock
     * MPP[22] USB 0 over current
     * MPP[23] USB 1 over current
     */

    /*
     * Configure peripherals.
     */
    orion5x_ehci0_init();
    orion5x_ehci1_init();
    orion5x_eth_init(&mss2_eth_data);
    orion5x_i2c_init();
    orion5x_sata_init(&mss2_sata_data);
    orion5x_uart0_init();
    orion5x_xor_init();

    orion5x_setup_dev_boot_win(MSS2_NOR_BOOT_BASE, MSS2_NOR_BOOT_SIZE);
    platform_device_register(&mss2_nor_flash);

    platform_device_register(&mss2_button_device);

    if (gpio_request(MSS2_GPIO_RTC_IRQ, "rtc") == 0) {
        if (gpio_direction_input(MSS2_GPIO_RTC_IRQ) == 0)
            mss2_i2c_rtc.irq = gpio_to_irq(MSS2_GPIO_RTC_IRQ);
        else
            gpio_free(MSS2_GPIO_RTC_IRQ);
    }
    i2c_register_board_info(0, &mss2_i2c_rtc, 1);

    /* register mss2 specific power-off method */
    pm_power_off = mss2_power_off;
}

MACHINE_START(MSS2, "Maxtor Shared Storage II")
    /* Maintainer: Sylver Bruneau <[email protected]> */
    .atag_offset    = 0x100,
    .init_machine   = mss2_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