d2net-setup.c

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/*
 * arch/arm/mach-orion5x/d2net-setup.c
 *
 * LaCie d2Network and Big Disk 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/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 <plat/orion-gpio.h>
#include "common.h"
#include "mpp.h"

/*****************************************************************************
 * LaCie d2 Network Info
 ****************************************************************************/

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

#define D2NET_NOR_BOOT_BASE     0xfff80000
#define D2NET_NOR_BOOT_SIZE     SZ_512K

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

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

static struct mtd_partition d2net_partitions[] = {
    {
        .name       = "Full512kb",
        .size       = MTDPART_SIZ_FULL,
        .offset     = 0,
        .mask_flags = MTD_WRITEABLE,
    },
};

static struct physmap_flash_data d2net_nor_flash_data = {
    .width      = 1,
    .parts      = d2net_partitions,
    .nr_parts   = ARRAY_SIZE(d2net_partitions),
};

static struct resource d2net_nor_flash_resource = {
    .flags          = IORESOURCE_MEM,
    .start          = D2NET_NOR_BOOT_BASE,
    .end            = D2NET_NOR_BOOT_BASE
                    + D2NET_NOR_BOOT_SIZE - 1,
};

static struct platform_device d2net_nor_flash = {
    .name           = "physmap-flash",
    .id         = 0,
    .dev        = {
        .platform_data  = &d2net_nor_flash_data,
    },
    .num_resources      = 1,
    .resource       = &d2net_nor_flash_resource,
};

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

static struct mv643xx_eth_platform_data d2net_eth_data = {
    .phy_addr   = MV643XX_ETH_PHY_ADDR(8),
};

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

/*
 * i2c addr | chip         | description
 * 0x32     | Ricoh 5C372b | RTC
 * 0x3e     | GMT G762     | PWM fan controller
 * 0x50     | HT24LC08     | eeprom (1kB)
 *
 * TODO: Add G762 support to the g760a driver.
 */
static struct i2c_board_info __initdata d2net_i2c_devices[] = {
    {
        I2C_BOARD_INFO("rs5c372b", 0x32),
    }, {
        I2C_BOARD_INFO("24c08", 0x50),
    },
};

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

static struct mv_sata_platform_data d2net_sata_data = {
    .n_ports    = 2,
};

#define D2NET_GPIO_SATA0_POWER  3
#define D2NET_GPIO_SATA1_POWER  12

static void __init d2net_sata_power_init(void)
{
    int err;

    err = gpio_request(D2NET_GPIO_SATA0_POWER, "SATA0 power");
    if (err == 0) {
        err = gpio_direction_output(D2NET_GPIO_SATA0_POWER, 1);
        if (err)
            gpio_free(D2NET_GPIO_SATA0_POWER);
    }
    if (err)
        pr_err("d2net: failed to configure SATA0 power GPIO\n");

    err = gpio_request(D2NET_GPIO_SATA1_POWER, "SATA1 power");
    if (err == 0) {
        err = gpio_direction_output(D2NET_GPIO_SATA1_POWER, 1);
        if (err)
            gpio_free(D2NET_GPIO_SATA1_POWER);
    }
    if (err)
        pr_err("d2net: failed to configure SATA1 power GPIO\n");
}

/*****************************************************************************
 * GPIO LED's
 ****************************************************************************/

/*
 * The blue front LED is wired to the CPLD and can blink in relation with the
 * SATA activity.
 *
 * The following array detail the different LED registers and the combination
 * of their possible values:
 *
 * led_off   | blink_ctrl | SATA active | LED state
 *           |            |             |
 *    1      |     x      |      x      |  off
 *    0      |     0      |      0      |  off
 *    0      |     1      |      0      |  blink (rate 300ms)
 *    0      |     x      |      1      |  on
 *
 * Notes: The blue and the red front LED's can't be on at the same time.
 *        Red LED have priority.
 */

#define D2NET_GPIO_RED_LED      6
#define D2NET_GPIO_BLUE_LED_BLINK_CTRL  16
#define D2NET_GPIO_BLUE_LED_OFF     23

static struct gpio_led d2net_leds[] = {
    {
        .name = "d2net:blue:sata",
        .default_trigger = "default-on",
        .gpio = D2NET_GPIO_BLUE_LED_OFF,
        .active_low = 1,
    },
    {
        .name = "d2net:red:fail",
        .gpio = D2NET_GPIO_RED_LED,
    },
};

static struct gpio_led_platform_data d2net_led_data = {
    .num_leds = ARRAY_SIZE(d2net_leds),
    .leds = d2net_leds,
};

static struct platform_device d2net_gpio_leds = {
    .name           = "leds-gpio",
    .id             = -1,
    .dev            = {
        .platform_data  = &d2net_led_data,
    },
};

static void __init d2net_gpio_leds_init(void)
{
    int err;

    /* Configure GPIO over MPP max number. */
    orion_gpio_set_valid(D2NET_GPIO_BLUE_LED_OFF, 1);

    /* Configure register blink_ctrl to allow SATA activity LED blinking. */
    err = gpio_request(D2NET_GPIO_BLUE_LED_BLINK_CTRL, "blue LED blink");
    if (err == 0) {
        err = gpio_direction_output(D2NET_GPIO_BLUE_LED_BLINK_CTRL, 1);
        if (err)
            gpio_free(D2NET_GPIO_BLUE_LED_BLINK_CTRL);
    }
    if (err)
        pr_err("d2net: failed to configure blue LED blink GPIO\n");

    platform_device_register(&d2net_gpio_leds);
}

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

#define D2NET_GPIO_PUSH_BUTTON      18
#define D2NET_GPIO_POWER_SWITCH_ON  8
#define D2NET_GPIO_POWER_SWITCH_OFF 9

#define D2NET_SWITCH_POWER_ON       0x1
#define D2NET_SWITCH_POWER_OFF      0x2

static struct gpio_keys_button d2net_buttons[] = {
    {
        .type       = EV_SW,
        .code       = D2NET_SWITCH_POWER_OFF,
        .gpio       = D2NET_GPIO_POWER_SWITCH_OFF,
        .desc       = "Power rocker switch (auto|off)",
        .active_low = 0,
    },
    {
        .type       = EV_SW,
        .code       = D2NET_SWITCH_POWER_ON,
        .gpio       = D2NET_GPIO_POWER_SWITCH_ON,
        .desc       = "Power rocker switch (on|auto)",
        .active_low = 0,
    },
    {
        .type       = EV_KEY,
        .code       = KEY_POWER,
        .gpio       = D2NET_GPIO_PUSH_BUTTON,
        .desc       = "Front Push Button",
        .active_low = 0,
    },
};

static struct gpio_keys_platform_data d2net_button_data = {
    .buttons    = d2net_buttons,
    .nbuttons   = ARRAY_SIZE(d2net_buttons),
};

static struct platform_device d2net_gpio_buttons = {
    .name       = "gpio-keys",
    .id     = -1,
    .dev        = {
        .platform_data  = &d2net_button_data,
    },
};

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

static unsigned int d2net_mpp_modes[] __initdata = {
    MPP0_GPIO,  /* Board ID (bit 0) */
    MPP1_GPIO,  /* Board ID (bit 1) */
    MPP2_GPIO,  /* Board ID (bit 2) */
    MPP3_GPIO,  /* SATA 0 power */
    MPP4_UNUSED,
    MPP5_GPIO,  /* Fan fail detection */
    MPP6_GPIO,  /* Red front LED */
    MPP7_UNUSED,
    MPP8_GPIO,  /* Rear power switch (on|auto) */
    MPP9_GPIO,  /* Rear power switch (auto|off) */
    MPP10_UNUSED,
    MPP11_UNUSED,
    MPP12_GPIO, /* SATA 1 power */
    MPP13_UNUSED,
    MPP14_SATA_LED, /* SATA 0 active */
    MPP15_SATA_LED, /* SATA 1 active */
    MPP16_GPIO, /* Blue front LED blink control */
    MPP17_UNUSED,
    MPP18_GPIO, /* Front button (0 = Released, 1 = Pushed ) */
    MPP19_UNUSED,
    0,
    /* 22: USB port 1 fuse (0 = Fail, 1 = Ok) */
    /* 23: Blue front LED off */
    /* 24: Inhibit board power off (0 = Disabled, 1 = Enabled) */
};

#define D2NET_GPIO_INHIBIT_POWER_OFF    24

static void __init d2net_init(void)
{
    /*
     * Setup basic Orion functions. Need to be called early.
     */
    orion5x_init();

    orion5x_mpp_conf(d2net_mpp_modes);

    /*
     * Configure peripherals.
     */
    orion5x_ehci0_init();
    orion5x_eth_init(&d2net_eth_data);
    orion5x_i2c_init();
    orion5x_uart0_init();

    d2net_sata_power_init();
    orion5x_sata_init(&d2net_sata_data);

    orion5x_setup_dev_boot_win(D2NET_NOR_BOOT_BASE,
                D2NET_NOR_BOOT_SIZE);
    platform_device_register(&d2net_nor_flash);

    platform_device_register(&d2net_gpio_buttons);

    d2net_gpio_leds_init();

    pr_notice("d2net: Flash write are not yet supported.\n");

    i2c_register_board_info(0, d2net_i2c_devices,
                ARRAY_SIZE(d2net_i2c_devices));

    orion_gpio_set_valid(D2NET_GPIO_INHIBIT_POWER_OFF, 1);
}

/* Warning: LaCie use a wrong mach-type (0x20e=526) in their bootloader. */

#ifdef CONFIG_MACH_D2NET
MACHINE_START(D2NET, "LaCie d2 Network")
    .atag_offset    = 0x100,
    .init_machine   = d2net_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
#endif

#ifdef CONFIG_MACH_BIGDISK
MACHINE_START(BIGDISK, "LaCie Big Disk Network")
    .atag_offset    = 0x100,
    .init_machine   = d2net_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
#endif