board-dnskw.c

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/*
 * Copyright 2012 (C), Jamie Lentin <[email protected]>
 *
 * arch/arm/mach-kirkwood/board-dnskw.c
 *
 * D-link DNS-320 & DNS-325 NAS 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/mv643xx_eth.h>
#include <linux/gpio.h>
#include "common.h"
#include "mpp.h"

static struct mv643xx_eth_platform_data dnskw_ge00_data = {
    .phy_addr   = MV643XX_ETH_PHY_ADDR(8),
};

static unsigned int dnskw_mpp_config[] __initdata = {
    MPP13_UART1_TXD,    /* Custom ... */
    MPP14_UART1_RXD,    /* ... Controller (DNS-320 only) */
    MPP20_SATA1_ACTn,   /* LED: White Right HDD */
    MPP21_SATA0_ACTn,   /* LED: White Left HDD */
    MPP24_GPIO,
    MPP25_GPIO,
    MPP26_GPIO, /* LED: Power */
    MPP27_GPIO, /* LED: Red Right HDD */
    MPP28_GPIO, /* LED: Red Left HDD */
    MPP29_GPIO, /* LED: Red USB (DNS-325 only) */
    MPP30_GPIO,
    MPP31_GPIO,
    MPP32_GPIO,
    MPP33_GPO,
    MPP34_GPIO, /* Button: Front power */
    MPP35_GPIO, /* LED: Red USB (DNS-320 only) */
    MPP36_GPIO, /* Power: Turn off board */
    MPP37_GPIO, /* Power: Turn back on after power failure */
    MPP38_GPIO,
    MPP39_GPIO, /* Power: SATA0 */
    MPP40_GPIO, /* Power: SATA1 */
    MPP41_GPIO, /* SATA0 present */
    MPP42_GPIO, /* SATA1 present */
    MPP43_GPIO, /* LED: White USB */
    MPP44_GPIO, /* Fan: Tachometer Pin */
    MPP45_GPIO, /* Fan: high speed */
    MPP46_GPIO, /* Fan: low speed */
    MPP47_GPIO, /* Button: Back unmount */
    MPP48_GPIO, /* Button: Back reset */
    MPP49_GPIO, /* Temp Alarm (DNS-325) Pin of U5 (DNS-320) */
    0
};

static void dnskw_power_off(void)
{
    gpio_set_value(36, 1);
}

/* Register any GPIO for output and set the value */
static void __init dnskw_gpio_register(unsigned gpio, char *name, int def)
{
    if (gpio_request(gpio, name) == 0 &&
        gpio_direction_output(gpio, 0) == 0) {
        gpio_set_value(gpio, def);
        if (gpio_export(gpio, 0) != 0)
            pr_err("dnskw: Failed to export GPIO %s\n", name);
    } else
        pr_err("dnskw: Failed to register %s\n", name);
}

void __init dnskw_init(void)
{
    kirkwood_mpp_conf(dnskw_mpp_config);

    kirkwood_ehci_init();
    kirkwood_ge00_init(&dnskw_ge00_data);

    /* Register power-off GPIO. */
    if (gpio_request(36, "dnskw:power:off") == 0
        && gpio_direction_output(36, 0) == 0)
        pm_power_off = dnskw_power_off;
    else
        pr_err("dnskw: failed to configure power-off GPIO\n");

    /* Ensure power is supplied to both HDDs */
    dnskw_gpio_register(39, "dnskw:power:sata0", 1);
    dnskw_gpio_register(40, "dnskw:power:sata1", 1);

    /* Set NAS to turn back on after a power failure */
    dnskw_gpio_register(37, "dnskw:power:recover", 1);
}