ls_hgl-setup.c

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/*
 * arch/arm/mach-orion5x/ls_hgl-setup.c
 *
 * Maintainer: Zhu Qingsen <[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 <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <mach/orion5x.h>
#include "common.h"
#include "mpp.h"

/*****************************************************************************
 * Linkstation LS-HGL Info
 ****************************************************************************/

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

#define LS_HGL_NOR_BOOT_BASE    0xf4000000
#define LS_HGL_NOR_BOOT_SIZE    SZ_256K

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

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

static struct resource ls_hgl_nor_flash_resource = {
    .flags  = IORESOURCE_MEM,
    .start  = LS_HGL_NOR_BOOT_BASE,
    .end    = LS_HGL_NOR_BOOT_BASE + LS_HGL_NOR_BOOT_SIZE - 1,
};

static struct platform_device ls_hgl_nor_flash = {
    .name           = "physmap-flash",
    .id         = 0,
    .dev        = {
        .platform_data  = &ls_hgl_nor_flash_data,
    },
    .num_resources      = 1,
    .resource       = &ls_hgl_nor_flash_resource,
};

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

static struct mv643xx_eth_platform_data ls_hgl_eth_data = {
    .phy_addr   = 8,
};

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

static struct i2c_board_info __initdata ls_hgl_i2c_rtc = {
    I2C_BOARD_INFO("rs5c372a", 0x32),
};

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

#define LS_HGL_GPIO_LED_ALARM   2
#define LS_HGL_GPIO_LED_INFO    3
#define LS_HGL_GPIO_LED_FUNC    17
#define LS_HGL_GPIO_LED_PWR     0


static struct gpio_led ls_hgl_led_pins[] = {
    {
        .name      = "alarm:red",
        .gpio      = LS_HGL_GPIO_LED_ALARM,
        .active_low     = 1,
    }, {
        .name      = "info:amber",
        .gpio      = LS_HGL_GPIO_LED_INFO,
        .active_low     = 1,
    }, {
        .name      = "func:blue:top",
        .gpio      = LS_HGL_GPIO_LED_FUNC,
        .active_low     = 1,
    }, {
        .name      = "power:blue:bottom",
        .gpio      = LS_HGL_GPIO_LED_PWR,
    },
};

static struct gpio_led_platform_data ls_hgl_led_data = {
    .leds      = ls_hgl_led_pins,
    .num_leds       = ARRAY_SIZE(ls_hgl_led_pins),
};

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

/****************************************************************************
 * GPIO Attached Keys
 ****************************************************************************/
#define LS_HGL_GPIO_KEY_FUNC       15
#define LS_HGL_GPIO_KEY_POWER      8
#define LS_HGL_GPIO_KEY_AUTOPOWER  10

#define LS_HGL_SW_POWER     0x00
#define LS_HGL_SW_AUTOPOWER 0x01

static struct gpio_keys_button ls_hgl_buttons[] = {
    {
        .code      = KEY_OPTION,
        .gpio      = LS_HGL_GPIO_KEY_FUNC,
        .desc      = "Function Button",
        .active_low     = 1,
    }, {
        .type       = EV_SW,
        .code      = LS_HGL_SW_POWER,
        .gpio      = LS_HGL_GPIO_KEY_POWER,
        .desc      = "Power-on Switch",
        .active_low     = 1,
    }, {
        .type       = EV_SW,
        .code      = LS_HGL_SW_AUTOPOWER,
        .gpio      = LS_HGL_GPIO_KEY_AUTOPOWER,
        .desc      = "Power-auto Switch",
        .active_low     = 1,
    },
};

static struct gpio_keys_platform_data ls_hgl_button_data = {
    .buttons    = ls_hgl_buttons,
    .nbuttons       = ARRAY_SIZE(ls_hgl_buttons),
};

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


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


/*****************************************************************************
 * Linkstation LS-HGL specific power off method: reboot
 ****************************************************************************/
/*
 * On the Linkstation LS-HGL, 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 ls_hgl_power_off(void)
{
    orion5x_restart('h', NULL);
}


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

#define LS_HGL_GPIO_USB_POWER   9
#define LS_HGL_GPIO_AUTO_POWER  10
#define LS_HGL_GPIO_POWER       8

#define LS_HGL_GPIO_HDD_POWER   1

static unsigned int ls_hgl_mpp_modes[] __initdata = {
    MPP0_GPIO, /* LED_PWR */
    MPP1_GPIO, /* HDD_PWR */
    MPP2_GPIO, /* LED_ALARM */
    MPP3_GPIO, /* LED_INFO */
    MPP4_UNUSED,
    MPP5_UNUSED,
    MPP6_GPIO, /* FAN_LCK */
    MPP7_GPIO, /* INIT */
    MPP8_GPIO, /* POWER */
    MPP9_GPIO, /* USB_PWR */
    MPP10_GPIO, /* AUTO_POWER */
    MPP11_UNUSED, /* LED_ETH (dummy) */
    MPP12_UNUSED,
    MPP13_UNUSED,
    MPP14_UNUSED,
    MPP15_GPIO, /* FUNC */
    MPP16_UNUSED,
    MPP17_GPIO, /* LED_FUNC */
    MPP18_UNUSED,
    MPP19_UNUSED,
    0,
};

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

    orion5x_mpp_conf(ls_hgl_mpp_modes);

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

    orion5x_setup_dev_boot_win(LS_HGL_NOR_BOOT_BASE,
                   LS_HGL_NOR_BOOT_SIZE);
    platform_device_register(&ls_hgl_nor_flash);

    platform_device_register(&ls_hgl_button_device);

    platform_device_register(&ls_hgl_leds);

    i2c_register_board_info(0, &ls_hgl_i2c_rtc, 1);

    /* enable USB power */
    gpio_set_value(LS_HGL_GPIO_USB_POWER, 1);

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

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

MACHINE_START(LINKSTATION_LS_HGL, "Buffalo Linkstation LS-HGL")
    /* Maintainer: Zhu Qingsen <[email protected]> */
    .atag_offset    = 0x100,
    .init_machine   = ls_hgl_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