/*
 * arch/arm/mach-orion5x/lsmini-setup.c
 *
 * Maintainer: Alexey Kopytko <alexey@kopytko.ru>
 *
 * 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 Mini Info
 ****************************************************************************/

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

#define LSMINI_NOR_BOOT_BASE    0xf4000000
#define LSMINI_NOR_BOOT_SIZE    SZ_256K

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

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

static struct resource lsmini_nor_flash_resource = {
        .flags  = IORESOURCE_MEM,
        .start  = LSMINI_NOR_BOOT_BASE,
        .end    = LSMINI_NOR_BOOT_BASE + LSMINI_NOR_BOOT_SIZE - 1,
};

static struct platform_device lsmini_nor_flash = {
        .name                   = "physmap-flash",
        .id                     = 0,
        .dev            = {
                .platform_data  = &lsmini_nor_flash_data,
        },
        .num_resources          = 1,
        .resource               = &lsmini_nor_flash_resource,
};

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

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

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

static struct i2c_board_info __initdata lsmini_i2c_rtc = {
        I2C_BOARD_INFO("rs5c372a", 0x32),
};

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

#define LSMINI_GPIO_LED_ALARM   2
#define LSMINI_GPIO_LED_INFO    3
#define LSMINI_GPIO_LED_FUNC    9
#define LSMINI_GPIO_LED_PWR     14

static struct gpio_led lsmini_led_pins[] = {
        {
                .name      = "alarm:red",
                .gpio      = LSMINI_GPIO_LED_ALARM,
                .active_low     = 1,
        }, {
                .name      = "info:amber",
                .gpio      = LSMINI_GPIO_LED_INFO,
                .active_low     = 1,
        }, {
                .name      = "func:blue:top",
                .gpio      = LSMINI_GPIO_LED_FUNC,
                .active_low     = 1,
        }, {
                .name      = "power:blue:bottom",
                .gpio      = LSMINI_GPIO_LED_PWR,
        },
};

static struct gpio_led_platform_data lsmini_led_data = {
        .leds      = lsmini_led_pins,
        .num_leds       = ARRAY_SIZE(lsmini_led_pins),
};

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

/****************************************************************************
 * GPIO Attached Keys
 ****************************************************************************/

#define LSMINI_GPIO_KEY_FUNC       15
#define LSMINI_GPIO_KEY_POWER      18
#define LSMINI_GPIO_KEY_AUTOPOWER 17

#define LSMINI_SW_POWER         0x00
#define LSMINI_SW_AUTOPOWER     0x01

static struct gpio_keys_button lsmini_buttons[] = {
        {
                .code      = KEY_OPTION,
                .gpio      = LSMINI_GPIO_KEY_FUNC,
                .desc      = "Function Button",
                .active_low     = 1,
        }, {
                .type           = EV_SW,
                .code      = LSMINI_SW_POWER,
                .gpio      = LSMINI_GPIO_KEY_POWER,
                .desc      = "Power-on Switch",
                .active_low     = 1,
        }, {
                .type           = EV_SW,
                .code      = LSMINI_SW_AUTOPOWER,
                .gpio      = LSMINI_GPIO_KEY_AUTOPOWER,
                .desc      = "Power-auto Switch",
                .active_low     = 1,
        },
};

static struct gpio_keys_platform_data lsmini_button_data = {
        .buttons        = lsmini_buttons,
        .nbuttons       = ARRAY_SIZE(lsmini_buttons),
};

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


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


/*****************************************************************************
 * Linkstation Mini specific power off method: reboot
 ****************************************************************************/
/*
 * On the Linkstation Mini, 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 lsmini_power_off(void)
{
        orion5x_restart('h', NULL);
}


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

#define LSMINI_GPIO_USB_POWER   16
#define LSMINI_GPIO_AUTO_POWER  17
#define LSMINI_GPIO_POWER       18

#define LSMINI_GPIO_HDD_POWER0  1
#define LSMINI_GPIO_HDD_POWER1  19

static unsigned int lsmini_mpp_modes[] __initdata = {
        MPP0_UNUSED, /* LED_RESERVE1 (unused) */
        MPP1_GPIO, /* HDD_PWR */
        MPP2_GPIO, /* LED_ALARM */
        MPP3_GPIO, /* LED_INFO */
        MPP4_UNUSED,
        MPP5_UNUSED,
        MPP6_UNUSED,
        MPP7_UNUSED,
        MPP8_UNUSED,
        MPP9_GPIO, /* LED_FUNC */
        MPP10_UNUSED,
        MPP11_UNUSED, /* LED_ETH (dummy) */
        MPP12_UNUSED,
        MPP13_UNUSED,
        MPP14_GPIO, /* LED_PWR */
        MPP15_GPIO, /* FUNC */
        MPP16_GPIO, /* USB_PWR */
        MPP17_GPIO, /* AUTO_POWER */
        MPP18_GPIO, /* POWER */
        MPP19_GPIO, /* HDD_PWR1 */
        0,
};

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

        orion5x_mpp_conf(lsmini_mpp_modes);

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

        mvebu_mbus_add_window("devbus-boot", LSMINI_NOR_BOOT_BASE,
                              LSMINI_NOR_BOOT_SIZE);
        platform_device_register(&lsmini_nor_flash);

        platform_device_register(&lsmini_button_device);

        platform_device_register(&lsmini_leds);

        i2c_register_board_info(0, &lsmini_i2c_rtc, 1);

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

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

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

#ifdef CONFIG_MACH_LINKSTATION_MINI
MACHINE_START(LINKSTATION_MINI, "Buffalo Linkstation Mini")
        /* Maintainer: Alexey Kopytko <alexey@kopytko.ru> */
        .atag_offset    = 0x100,
        .init_machine   = lsmini_init,
        .map_io         = orion5x_map_io,
        .init_early     = orion5x_init_early,
        .init_irq       = orion5x_init_irq,
        .init_time      = orion5x_timer_init,
        .fixup          = tag_fixup_mem32,
        .restart        = orion5x_restart,
MACHINE_END
#endif