net2big-setup.c

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/*
 * arch/arm/mach-orion5x/net2big-setup.c
 *
 * LaCie 2Big Network NAS setup
 *
 * Copyright (C) 2009 Simon Guinot <[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/input.h>
#include <linux/i2c.h>
#include <linux/ata_platform.h>
#include <linux/gpio.h>
#include <linux/delay.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <mach/orion5x.h>
#include <plat/orion-gpio.h>
#include "common.h"
#include "mpp.h"

/*****************************************************************************
 * LaCie 2Big Network Info
 ****************************************************************************/

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

#define NET2BIG_NOR_BOOT_BASE       0xfff80000
#define NET2BIG_NOR_BOOT_SIZE       SZ_512K

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

/*
 * TODO: Check write support on flash MX29LV400CBTC-70G
 */

static struct mtd_partition net2big_partitions[] = {
    {
        .name       = "Full512kb",
        .size       = MTDPART_SIZ_FULL,
        .offset     = 0x00000000,
        .mask_flags = MTD_WRITEABLE,
    },
};

static struct physmap_flash_data net2big_nor_flash_data = {
    .width      = 1,
    .parts      = net2big_partitions,
    .nr_parts   = ARRAY_SIZE(net2big_partitions),
};

static struct resource net2big_nor_flash_resource = {
    .flags          = IORESOURCE_MEM,
    .start          = NET2BIG_NOR_BOOT_BASE,
    .end            = NET2BIG_NOR_BOOT_BASE
                    + NET2BIG_NOR_BOOT_SIZE - 1,
};

static struct platform_device net2big_nor_flash = {
    .name           = "physmap-flash",
    .id         = 0,
    .dev        = {
        .platform_data  = &net2big_nor_flash_data,
    },
    .num_resources      = 1,
    .resource       = &net2big_nor_flash_resource,
};

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

static struct mv643xx_eth_platform_data net2big_eth_data = {
    .phy_addr   = MV643XX_ETH_PHY_ADDR(8),
};

/*****************************************************************************
 * I2C devices
 ****************************************************************************/

/*
 * i2c addr | chip         | description
 * 0x32     | Ricoh 5C372b | RTC
 * 0x50     | HT24LC08     | eeprom (1kB)
 */
static struct i2c_board_info __initdata net2big_i2c_devices[] = {
    {
        I2C_BOARD_INFO("rs5c372b", 0x32),
    }, {
        I2C_BOARD_INFO("24c08", 0x50),
    },
};

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

static struct mv_sata_platform_data net2big_sata_data = {
    .n_ports    = 2,
};

#define NET2BIG_GPIO_SATA_POWER_REQ 19
#define NET2BIG_GPIO_SATA0_POWER    23
#define NET2BIG_GPIO_SATA1_POWER    25

static void __init net2big_sata_power_init(void)
{
    int err;

    /* Configure GPIOs over MPP max number. */
    orion_gpio_set_valid(NET2BIG_GPIO_SATA0_POWER, 1);
    orion_gpio_set_valid(NET2BIG_GPIO_SATA1_POWER, 1);

    err = gpio_request(NET2BIG_GPIO_SATA0_POWER, "SATA0 power status");
    if (err == 0) {
        err = gpio_direction_input(NET2BIG_GPIO_SATA0_POWER);
        if (err)
            gpio_free(NET2BIG_GPIO_SATA0_POWER);
    }
    if (err) {
        pr_err("net2big: failed to setup SATA0 power GPIO\n");
        return;
    }

    err = gpio_request(NET2BIG_GPIO_SATA1_POWER, "SATA1 power status");
    if (err == 0) {
        err = gpio_direction_input(NET2BIG_GPIO_SATA1_POWER);
        if (err)
            gpio_free(NET2BIG_GPIO_SATA1_POWER);
    }
    if (err) {
        pr_err("net2big: failed to setup SATA1 power GPIO\n");
        goto err_free_1;
    }

    err = gpio_request(NET2BIG_GPIO_SATA_POWER_REQ, "SATA power request");
    if (err == 0) {
        err = gpio_direction_output(NET2BIG_GPIO_SATA_POWER_REQ, 0);
        if (err)
            gpio_free(NET2BIG_GPIO_SATA_POWER_REQ);
    }
    if (err) {
        pr_err("net2big: failed to setup SATA power request GPIO\n");
        goto err_free_2;
    }

    if (gpio_get_value(NET2BIG_GPIO_SATA0_POWER) &&
        gpio_get_value(NET2BIG_GPIO_SATA1_POWER)) {
        return;
    }

    /*
     * SATA power up on both disk is done by pulling high the CPLD power
     * request line. The 300ms delay is related to the CPLD clock and is
     * needed to be sure that the CPLD has take into account the low line
     * status.
     */
    msleep(300);
    gpio_set_value(NET2BIG_GPIO_SATA_POWER_REQ, 1);
    pr_info("net2big: power up SATA hard disks\n");

    return;

err_free_2:
    gpio_free(NET2BIG_GPIO_SATA1_POWER);
err_free_1:
    gpio_free(NET2BIG_GPIO_SATA0_POWER);

    return;
}

/*****************************************************************************
 * GPIO LEDs
 ****************************************************************************/

/*
 * The power front LEDs (blue and red) and SATA red LEDs are controlled via a
 * single GPIO line and are compatible with the leds-gpio driver.
 *
 * The SATA blue LEDs have some hardware blink capabilities which are detailed
 * in the following array:
 *
 * SATAx blue LED | SATAx activity | LED state
 *                |                |
 *       0        |       0        |  blink (rate 300ms)
 *       1        |       0        |  off
 *       ?        |       1        |  on
 *
 * Notes: The blue and the red front LED's can't be on at the same time.
 *        Blue LED have priority.
 */

#define NET2BIG_GPIO_PWR_RED_LED    6
#define NET2BIG_GPIO_PWR_BLUE_LED   16
#define NET2BIG_GPIO_PWR_LED_BLINK_STOP 7

#define NET2BIG_GPIO_SATA0_RED_LED  11
#define NET2BIG_GPIO_SATA1_RED_LED  10

#define NET2BIG_GPIO_SATA0_BLUE_LED 17
#define NET2BIG_GPIO_SATA1_BLUE_LED 13

static struct gpio_led net2big_leds[] = {
    {
        .name = "net2big:red:power",
        .gpio = NET2BIG_GPIO_PWR_RED_LED,
    },
    {
        .name = "net2big:blue:power",
        .gpio = NET2BIG_GPIO_PWR_BLUE_LED,
    },
    {
        .name = "net2big:red:sata0",
        .gpio = NET2BIG_GPIO_SATA0_RED_LED,
    },
    {
        .name = "net2big:red:sata1",
        .gpio = NET2BIG_GPIO_SATA1_RED_LED,
    },
};

static struct gpio_led_platform_data net2big_led_data = {
    .num_leds = ARRAY_SIZE(net2big_leds),
    .leds = net2big_leds,
};

static struct platform_device net2big_gpio_leds = {
    .name           = "leds-gpio",
    .id             = -1,
    .dev            = {
        .platform_data  = &net2big_led_data,
    },
};

static void __init net2big_gpio_leds_init(void)
{
    int err;

    /* Stop initial CPLD slow red/blue blinking on power LED. */
    err = gpio_request(NET2BIG_GPIO_PWR_LED_BLINK_STOP,
               "Power LED blink stop");
    if (err == 0) {
        err = gpio_direction_output(NET2BIG_GPIO_PWR_LED_BLINK_STOP, 1);
        if (err)
            gpio_free(NET2BIG_GPIO_PWR_LED_BLINK_STOP);
    }
    if (err)
        pr_err("net2big: failed to setup power LED blink GPIO\n");

    /*
     * Configure SATA0 and SATA1 blue LEDs to blink in relation with the
     * hard disk activity.
     */
    err = gpio_request(NET2BIG_GPIO_SATA0_BLUE_LED,
               "SATA0 blue LED control");
    if (err == 0) {
        err = gpio_direction_output(NET2BIG_GPIO_SATA0_BLUE_LED, 1);
        if (err)
            gpio_free(NET2BIG_GPIO_SATA0_BLUE_LED);
    }
    if (err)
        pr_err("net2big: failed to setup SATA0 blue LED GPIO\n");

    err = gpio_request(NET2BIG_GPIO_SATA1_BLUE_LED,
               "SATA1 blue LED control");
    if (err == 0) {
        err = gpio_direction_output(NET2BIG_GPIO_SATA1_BLUE_LED, 1);
        if (err)
            gpio_free(NET2BIG_GPIO_SATA1_BLUE_LED);
    }
    if (err)
        pr_err("net2big: failed to setup SATA1 blue LED GPIO\n");

    platform_device_register(&net2big_gpio_leds);
}

/****************************************************************************
 * GPIO keys
 ****************************************************************************/

#define NET2BIG_GPIO_PUSH_BUTTON    18
#define NET2BIG_GPIO_POWER_SWITCH_ON    8
#define NET2BIG_GPIO_POWER_SWITCH_OFF   9

#define NET2BIG_SWITCH_POWER_ON     0x1
#define NET2BIG_SWITCH_POWER_OFF    0x2

static struct gpio_keys_button net2big_buttons[] = {
    {
        .type       = EV_SW,
        .code       = NET2BIG_SWITCH_POWER_OFF,
        .gpio       = NET2BIG_GPIO_POWER_SWITCH_OFF,
        .desc       = "Power rocker switch (auto|off)",
        .active_low = 0,
    },
    {
        .type       = EV_SW,
        .code       = NET2BIG_SWITCH_POWER_ON,
        .gpio       = NET2BIG_GPIO_POWER_SWITCH_ON,
        .desc       = "Power rocker switch (on|auto)",
        .active_low = 0,
    },
    {
        .type       = EV_KEY,
        .code       = KEY_POWER,
        .gpio       = NET2BIG_GPIO_PUSH_BUTTON,
        .desc       = "Front Push Button",
        .active_low = 0,
    },
};

static struct gpio_keys_platform_data net2big_button_data = {
    .buttons    = net2big_buttons,
    .nbuttons   = ARRAY_SIZE(net2big_buttons),
};

static struct platform_device net2big_gpio_buttons = {
    .name       = "gpio-keys",
    .id     = -1,
    .dev        = {
        .platform_data  = &net2big_button_data,
    },
};

/*****************************************************************************
 * General Setup
 ****************************************************************************/

static unsigned int net2big_mpp_modes[] __initdata = {
    MPP0_GPIO,  /* Raid mode (bit 0) */
    MPP1_GPIO,  /* USB port 2 fuse (0 = Fail, 1 = Ok) */
    MPP2_GPIO,  /* Raid mode (bit 1) */
    MPP3_GPIO,  /* Board ID (bit 0) */
    MPP4_GPIO,  /* Fan activity (0 = Off, 1 = On) */
    MPP5_GPIO,  /* Fan fail detection */
    MPP6_GPIO,  /* Red front LED (0 = Off, 1 = On) */
    MPP7_GPIO,  /* Disable initial blinking on front LED */
    MPP8_GPIO,  /* Rear power switch (on|auto) */
    MPP9_GPIO,  /* Rear power switch (auto|off) */
    MPP10_GPIO, /* SATA 1 red LED (0 = Off, 1 = On) */
    MPP11_GPIO, /* SATA 0 red LED (0 = Off, 1 = On) */
    MPP12_GPIO, /* Board ID (bit 1) */
    MPP13_GPIO, /* SATA 1 blue LED blink control */
    MPP14_SATA_LED,
    MPP15_SATA_LED,
    MPP16_GPIO, /* Blue front LED control */
    MPP17_GPIO, /* SATA 0 blue LED blink control */
    MPP18_GPIO, /* Front button (0 = Released, 1 = Pushed ) */
    MPP19_GPIO, /* SATA{0,1} power On/Off request */
    0,
    /* 22: USB port 1 fuse (0 = Fail, 1 = Ok) */
    /* 23: SATA 0 power status */
    /* 24: Board power off */
    /* 25: SATA 1 power status */
};

#define NET2BIG_GPIO_POWER_OFF      24

static void net2big_power_off(void)
{
    gpio_set_value(NET2BIG_GPIO_POWER_OFF, 1);
}

static void __init net2big_init(void)
{
    /*
     * Setup basic Orion functions. Need to be called early.
     */
    orion5x_init();

    orion5x_mpp_conf(net2big_mpp_modes);

    /*
     * Configure peripherals.
     */
    orion5x_ehci0_init();
    orion5x_ehci1_init();
    orion5x_eth_init(&net2big_eth_data);
    orion5x_i2c_init();
    orion5x_uart0_init();
    orion5x_xor_init();

    net2big_sata_power_init();
    orion5x_sata_init(&net2big_sata_data);

    orion5x_setup_dev_boot_win(NET2BIG_NOR_BOOT_BASE,
                   NET2BIG_NOR_BOOT_SIZE);
    platform_device_register(&net2big_nor_flash);

    platform_device_register(&net2big_gpio_buttons);
    net2big_gpio_leds_init();

    i2c_register_board_info(0, net2big_i2c_devices,
                ARRAY_SIZE(net2big_i2c_devices));

    orion_gpio_set_valid(NET2BIG_GPIO_POWER_OFF, 1);

    if (gpio_request(NET2BIG_GPIO_POWER_OFF, "power-off") == 0 &&
        gpio_direction_output(NET2BIG_GPIO_POWER_OFF, 0) == 0)
        pm_power_off = net2big_power_off;
    else
        pr_err("net2big: failed to configure power-off GPIO\n");

    pr_notice("net2big: Flash writing is not yet supported.\n");
}

/* Warning: LaCie use a wrong mach-type (0x20e=526) in their bootloader. */
MACHINE_START(NET2BIG, "LaCie 2Big Network")
    .atag_offset    = 0x100,
    .init_machine   = net2big_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