board-lsxl.c

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/*
 * Copyright 2012 (C), Michael Walle <[email protected]>
 *
 * arch/arm/mach-kirkwood/board-lsxl.c
 *
 * Buffalo Linkstation LS-XHL and LS-CHLv2 init for drivers not
 * converted to flattened device tree yet.
 *
 * 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/partitions.h>
#include <linux/ata_platform.h>
#include <linux/spi/flash.h>
#include <linux/spi/spi.h>
#include <linux/mv643xx_eth.h>
#include <linux/gpio.h>
#include <linux/gpio-fan.h>
#include <linux/input.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <mach/kirkwood.h>
#include "common.h"
#include "mpp.h"

static struct mv643xx_eth_platform_data lsxl_ge00_data = {
    .phy_addr   = MV643XX_ETH_PHY_ADDR(0),
};

static struct mv643xx_eth_platform_data lsxl_ge01_data = {
    .phy_addr   = MV643XX_ETH_PHY_ADDR(8),
};

static unsigned int lsxl_mpp_config[] __initdata = {
    MPP10_GPO,  /* HDD Power Enable */
    MPP11_GPIO, /* USB Vbus Enable */
    MPP18_GPO,  /* FAN High Enable# */
    MPP19_GPO,  /* FAN Low Enable# */
    MPP36_GPIO, /* Function Blue LED */
    MPP37_GPIO, /* Alarm LED */
    MPP38_GPIO, /* Info LED */
    MPP39_GPIO, /* Power LED */
    MPP40_GPIO, /* Fan Lock */
    MPP41_GPIO, /* Function Button */
    MPP42_GPIO, /* Power Switch */
    MPP43_GPIO, /* Power Auto Switch */
    MPP48_GPIO, /* Function Red LED */
    0
};

#define LSXL_GPIO_FAN_HIGH  18
#define LSXL_GPIO_FAN_LOW   19
#define LSXL_GPIO_FAN_LOCK  40

static struct gpio_fan_alarm lsxl_alarm = {
    .gpio = LSXL_GPIO_FAN_LOCK,
};

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

static int lsxl_gpio_list[] = {
    LSXL_GPIO_FAN_HIGH, LSXL_GPIO_FAN_LOW,
};

static struct gpio_fan_platform_data lsxl_fan_data = {
    .num_ctrl = ARRAY_SIZE(lsxl_gpio_list),
    .ctrl = lsxl_gpio_list,
    .alarm = &lsxl_alarm,
    .num_speed = ARRAY_SIZE(lsxl_speeds),
    .speed = lsxl_speeds,
};

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

/*
 * On the LS-XHL/LS-CHLv2, 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 lsxl_power_off(void)
{
    kirkwood_restart('h', NULL);
}

#define LSXL_GPIO_HDD_POWER 10
#define LSXL_GPIO_USB_POWER 11

void __init lsxl_init(void)
{
    /*
     * Basic setup. Needs to be called early.
     */
    kirkwood_mpp_conf(lsxl_mpp_config);

    /* usb and sata power on */
    gpio_set_value(LSXL_GPIO_USB_POWER, 1);
    gpio_set_value(LSXL_GPIO_HDD_POWER, 1);

    kirkwood_ehci_init();
    kirkwood_ge00_init(&lsxl_ge00_data);
    kirkwood_ge01_init(&lsxl_ge01_data);
    platform_device_register(&lsxl_fan_device);

    /* register power-off method */
    pm_power_off = lsxl_power_off;
}