ls-chl-setup.c

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/*
 * arch/arm/mach-orion5x/ls-chl-setup.c
 *
 * Maintainer: Ash Hughes <[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.
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/mtd/physmap.h>
#include <linux/mv643xx_eth.h>
#include <linux/leds.h>
#include <linux/gpio_keys.h>
#include <linux/gpio-fan.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 <mach/orion5x.h>
#include "common.h"
#include "mpp.h"

/*****************************************************************************
 * Linkstation LS-CHL Info
 ****************************************************************************/

/*
 * 256K NOR flash Device bus boot chip select
 */

#define LSCHL_NOR_BOOT_BASE 0xf4000000
#define LSCHL_NOR_BOOT_SIZE SZ_256K

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

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

static struct resource lschl_nor_flash_resource = {
    .flags  = IORESOURCE_MEM,
    .start  = LSCHL_NOR_BOOT_BASE,
    .end    = LSCHL_NOR_BOOT_BASE + LSCHL_NOR_BOOT_SIZE - 1,
};

static struct platform_device lschl_nor_flash = {
    .name = "physmap-flash",
    .id = 0,
    .dev = {
        .platform_data  = &lschl_nor_flash_data,
    },
    .num_resources = 1,
    .resource = &lschl_nor_flash_resource,
};

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

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

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

static struct i2c_board_info __initdata lschl_i2c_rtc = {
    I2C_BOARD_INFO("rs5c372a", 0x32),
};

/*****************************************************************************
 * LEDs attached to GPIO
 ****************************************************************************/

#define LSCHL_GPIO_LED_ALARM    2
#define LSCHL_GPIO_LED_INFO 3
#define LSCHL_GPIO_LED_FUNC 17
#define LSCHL_GPIO_LED_PWR  0

static struct gpio_led lschl_led_pins[] = {
    {
        .name = "alarm:red",
        .gpio = LSCHL_GPIO_LED_ALARM,
        .active_low = 1,
    }, {
        .name = "info:amber",
        .gpio = LSCHL_GPIO_LED_INFO,
        .active_low = 1,
    }, {
        .name = "func:blue:top",
        .gpio = LSCHL_GPIO_LED_FUNC,
        .active_low = 1,
    }, {
        .name = "power:blue:bottom",
        .gpio = LSCHL_GPIO_LED_PWR,
    },
};

static struct gpio_led_platform_data lschl_led_data = {
    .leds = lschl_led_pins,
    .num_leds = ARRAY_SIZE(lschl_led_pins),
};

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

/*****************************************************************************
 * SATA
 ****************************************************************************/
static struct mv_sata_platform_data lschl_sata_data = {
    .n_ports = 2,
};

/*****************************************************************************
 * LS-CHL specific power off method: reboot
 ****************************************************************************/
/*
 * On the LS-CHL, the shutdown process is following:
 * - Userland monitors key events until the power switch goes to off position
 * - The board reboots
 * - U-boot starts and goes into an idle mode waiting for the user
 *   to move the switch to ON position
 *
 */

static void lschl_power_off(void)
{
    orion5x_restart('h', NULL);
}

/*****************************************************************************
 * General Setup
 ****************************************************************************/
#define LSCHL_GPIO_USB_POWER    9
#define LSCHL_GPIO_AUTO_POWER   17
#define LSCHL_GPIO_POWER    18

/****************************************************************************
 * GPIO Attached Keys
 ****************************************************************************/
#define LSCHL_GPIO_KEY_FUNC     15
#define LSCHL_GPIO_KEY_POWER        8
#define LSCHL_GPIO_KEY_AUTOPOWER    10
#define LSCHL_SW_POWER      0x00
#define LSCHL_SW_AUTOPOWER  0x01
#define LSCHL_SW_FUNC       0x02

static struct gpio_keys_button lschl_buttons[] = {
    {
        .type = EV_SW,
        .code = LSCHL_SW_POWER,
        .gpio = LSCHL_GPIO_KEY_POWER,
        .desc = "Power-on Switch",
        .active_low = 1,
    }, {
        .type = EV_SW,
        .code = LSCHL_SW_AUTOPOWER,
        .gpio = LSCHL_GPIO_KEY_AUTOPOWER,
        .desc = "Power-auto Switch",
        .active_low = 1,
    }, {
        .type = EV_SW,
        .code = LSCHL_SW_FUNC,
        .gpio = LSCHL_GPIO_KEY_FUNC,
        .desc = "Function Switch",
        .active_low = 1,
    },
};

static struct gpio_keys_platform_data lschl_button_data = {
    .buttons = lschl_buttons,
    .nbuttons = ARRAY_SIZE(lschl_buttons),
};

static struct platform_device lschl_button_device = {
    .name = "gpio-keys",
    .id = -1,
    .num_resources = 0,
    .dev = {
        .platform_data = &lschl_button_data,
    },
};

#define LSCHL_GPIO_HDD_POWER    1

/****************************************************************************
 * GPIO Fan
 ****************************************************************************/

#define LSCHL_GPIO_FAN_LOW  16
#define LSCHL_GPIO_FAN_HIGH 14
#define LSCHL_GPIO_FAN_LOCK 6

static struct gpio_fan_alarm lschl_alarm = {
    .gpio = LSCHL_GPIO_FAN_LOCK,
};

static struct gpio_fan_speed lschl_speeds[] = {
    {
        .rpm = 0,
        .ctrl_val = 3,
    }, {
        .rpm = 1500,
        .ctrl_val = 2,
    }, {
        .rpm = 3250,
        .ctrl_val = 1,
    }, {
        .rpm = 5000,
        .ctrl_val = 0,
    },
};

static int lschl_gpio_list[] = {
    LSCHL_GPIO_FAN_HIGH, LSCHL_GPIO_FAN_LOW,
};

static struct gpio_fan_platform_data lschl_fan_data = {
    .num_ctrl = ARRAY_SIZE(lschl_gpio_list),
    .ctrl = lschl_gpio_list,
    .alarm = &lschl_alarm,
    .num_speed = ARRAY_SIZE(lschl_speeds),
    .speed = lschl_speeds,
};

static struct platform_device lschl_fan_device = {
    .name = "gpio-fan",
    .id = -1,
    .num_resources = 0,
    .dev = {
        .platform_data = &lschl_fan_data,
    },
};

/****************************************************************************
 * GPIO Data
 ****************************************************************************/

static unsigned int lschl_mpp_modes[] __initdata = {
    MPP0_GPIO, /* LED POWER */
    MPP1_GPIO, /* HDD POWER */
    MPP2_GPIO, /* LED ALARM */
    MPP3_GPIO, /* LED INFO */
    MPP4_UNUSED,
    MPP5_UNUSED,
    MPP6_GPIO, /* FAN LOCK */
    MPP7_GPIO, /* SW INIT */
    MPP8_GPIO, /* SW POWER */
    MPP9_GPIO, /* USB POWER */
    MPP10_GPIO, /* SW AUTO POWER */
    MPP11_UNUSED,
    MPP12_UNUSED,
    MPP13_UNUSED,
    MPP14_GPIO, /* FAN HIGH */
    MPP15_GPIO, /* SW FUNC */
    MPP16_GPIO, /* FAN LOW */
    MPP17_GPIO, /* LED FUNC */
    MPP18_UNUSED,
    MPP19_UNUSED,
    0,
};

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

    orion5x_mpp_conf(lschl_mpp_modes);

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

    orion5x_setup_dev_boot_win(LSCHL_NOR_BOOT_BASE,
                   LSCHL_NOR_BOOT_SIZE);
    platform_device_register(&lschl_nor_flash);

    platform_device_register(&lschl_leds);

    platform_device_register(&lschl_button_device);

    platform_device_register(&lschl_fan_device);

    i2c_register_board_info(0, &lschl_i2c_rtc, 1);

    /* usb power on */
    gpio_set_value(LSCHL_GPIO_USB_POWER, 1);

    /* register power-off method */
    pm_power_off = lschl_power_off;

    pr_info("%s: finished\n", __func__);
}

MACHINE_START(LINKSTATION_LSCHL, "Buffalo Linkstation LiveV3 (LS-CHL)")
    /* Maintainer: Ash Hughes <[email protected]> */
    .atag_offset    = 0x100,
    .init_machine   = lschl_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