mach-h1940.c

Go to the documentation of this file.

/* linux/arch/arm/mach-s3c2410/mach-h1940.c
 *
 * Copyright (c) 2003-2005 Simtec Electronics
 *   Ben Dooks <[email protected]>
 *
 * http://www.handhelds.org/projects/h1940.html
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
*/

#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/list.h>
#include <linux/memblock.h>
#include <linux/timer.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/serial_core.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/gpio.h>
#include <linux/input.h>
#include <linux/gpio_keys.h>
#include <linux/pwm_backlight.h>
#include <linux/i2c.h>
#include <linux/leds.h>
#include <linux/pda_power.h>
#include <linux/s3c_adc_battery.h>
#include <linux/delay.h>

#include <video/platform_lcd.h>

#include <linux/mmc/host.h>
#include <linux/export.h>

#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>

#include <mach/hardware.h>
#include <asm/irq.h>
#include <asm/mach-types.h>

#include <plat/regs-serial.h>
#include <mach/regs-lcd.h>
#include <mach/regs-clock.h>

#include <mach/regs-gpio.h>
#include <mach/gpio-fns.h>
#include <mach/gpio-nrs.h>

#include <mach/h1940.h>
#include <mach/h1940-latch.h>
#include <mach/fb.h>
#include <linux/platform_data/usb-s3c2410_udc.h>
#include <linux/platform_data/i2c-s3c2410.h>

#include <plat/gpio-cfg.h>
#include <plat/clock.h>
#include <plat/devs.h>
#include <plat/cpu.h>
#include <plat/pll.h>
#include <plat/pm.h>
#include <linux/platform_data/mmc-s3cmci.h>
#include <linux/platform_data/touchscreen-s3c2410.h>

#include <sound/uda1380.h>

#include "common.h"

#define H1940_LATCH     ((void __force __iomem *)0xF8000000)

#define H1940_PA_LATCH      S3C2410_CS2

#define H1940_LATCH_BIT(x)  (1 << ((x) + 16 - S3C_GPIO_END))

static struct map_desc h1940_iodesc[] __initdata = {
    [0] = {
        .virtual    = (unsigned long)H1940_LATCH,
        .pfn        = __phys_to_pfn(H1940_PA_LATCH),
        .length     = SZ_16K,
        .type       = MT_DEVICE
    },
};

#define UCON S3C2410_UCON_DEFAULT | S3C2410_UCON_UCLK
#define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
#define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE

static struct s3c2410_uartcfg h1940_uartcfgs[] __initdata = {
    [0] = {
        .hwport      = 0,
        .flags       = 0,
        .ucon        = 0x3c5,
        .ulcon       = 0x03,
        .ufcon       = 0x51,
    },
    [1] = {
        .hwport      = 1,
        .flags       = 0,
        .ucon        = 0x245,
        .ulcon       = 0x03,
        .ufcon       = 0x00,
    },
    /* IR port */
    [2] = {
        .hwport      = 2,
        .flags       = 0,
        .uart_flags  = UPF_CONS_FLOW,
        .ucon        = 0x3c5,
        .ulcon       = 0x43,
        .ufcon       = 0x51,
    }
};

/* Board control latch control */

static unsigned int latch_state;

static void h1940_latch_control(unsigned int clear, unsigned int set)
{
    unsigned long flags;

    local_irq_save(flags);

    latch_state &= ~clear;
    latch_state |= set;

    __raw_writel(latch_state, H1940_LATCH);

    local_irq_restore(flags);
}

static inline int h1940_gpiolib_to_latch(int offset)
{
    return 1 << (offset + 16);
}

static void h1940_gpiolib_latch_set(struct gpio_chip *chip,
                    unsigned offset, int value)
{
    int latch_bit = h1940_gpiolib_to_latch(offset);

    h1940_latch_control(value ? 0 : latch_bit,
        value ? latch_bit : 0);
}

static int h1940_gpiolib_latch_output(struct gpio_chip *chip,
                    unsigned offset, int value)
{
    h1940_gpiolib_latch_set(chip, offset, value);
    return 0;
}

static int h1940_gpiolib_latch_get(struct gpio_chip *chip,
                    unsigned offset)
{
    return (latch_state >> (offset + 16)) & 1;
}

static struct gpio_chip h1940_latch_gpiochip = {
    .base           = H1940_LATCH_GPIO(0),
    .owner          = THIS_MODULE,
    .label          = "H1940_LATCH",
    .ngpio          = 16,
    .direction_output   = h1940_gpiolib_latch_output,
    .set            = h1940_gpiolib_latch_set,
    .get            = h1940_gpiolib_latch_get,
};

static struct s3c2410_udc_mach_info h1940_udc_cfg __initdata = {
    .vbus_pin       = S3C2410_GPG(5),
    .vbus_pin_inverted  = 1,
    .pullup_pin     = H1940_LATCH_USB_DP,
};

static struct s3c2410_ts_mach_info h1940_ts_cfg __initdata = {
        .delay = 10000,
        .presc = 49,
        .oversampling_shift = 2,
        .cfg_gpio = s3c24xx_ts_cfg_gpio,
};

static struct s3c2410fb_display h1940_lcd __initdata = {
    .lcdcon5=   S3C2410_LCDCON5_FRM565 | \
            S3C2410_LCDCON5_INVVLINE | \
            S3C2410_LCDCON5_HWSWP,

    .type =     S3C2410_LCDCON1_TFT,
    .width =    240,
    .height =   320,
    .pixclock = 260000,
    .xres =     240,
    .yres =     320,
    .bpp =      16,
    .left_margin =  8,
    .right_margin = 20,
    .hsync_len =    4,
    .upper_margin = 8,
    .lower_margin = 7,
    .vsync_len =    1,
};

static struct s3c2410fb_mach_info h1940_fb_info __initdata = {
    .displays = &h1940_lcd,
    .num_displays = 1,
    .default_display = 0,

    .lpcsel =   0x02,
    .gpccon =   0xaa940659,
    .gpccon_mask =  0xffffc0f0,
    .gpcup =    0x0000ffff,
    .gpcup_mask =   0xffffffff,
    .gpdcon =   0xaa84aaa0,
    .gpdcon_mask =  0xffffffff,
    .gpdup =    0x0000faff,
    .gpdup_mask =   0xffffffff,
};

static int power_supply_init(struct device *dev)
{
    return gpio_request(S3C2410_GPF(2), "cable plugged");
}

static int h1940_is_ac_online(void)
{
    return !gpio_get_value(S3C2410_GPF(2));
}

static void power_supply_exit(struct device *dev)
{
    gpio_free(S3C2410_GPF(2));
}

static char *h1940_supplicants[] = {
    "main-battery",
    "backup-battery",
};

static struct pda_power_pdata power_supply_info = {
    .init           = power_supply_init,
    .is_ac_online       = h1940_is_ac_online,
    .exit           = power_supply_exit,
    .supplied_to        = h1940_supplicants,
    .num_supplicants    = ARRAY_SIZE(h1940_supplicants),
};

static struct resource power_supply_resources[] = {
    [0] = DEFINE_RES_NAMED(IRQ_EINT2, 1, "ac", IORESOURCE_IRQ \
            | IORESOURCE_IRQ_LOWEDGE | IORESOURCE_IRQ_HIGHEDGE),
};

static struct platform_device power_supply = {
    .name       = "pda-power",
    .id     = -1,
    .dev        = {
                .platform_data =
                    &power_supply_info,
    },
    .resource   = power_supply_resources,
    .num_resources  = ARRAY_SIZE(power_supply_resources),
};

static const struct s3c_adc_bat_thresh bat_lut_noac[] = {
    { .volt = 4070, .cur = 162, .level = 100},
    { .volt = 4040, .cur = 165, .level = 95},
    { .volt = 4016, .cur = 164, .level = 90},
    { .volt = 3996, .cur = 166, .level = 85},
    { .volt = 3971, .cur = 168, .level = 80},
    { .volt = 3951, .cur = 168, .level = 75},
    { .volt = 3931, .cur = 170, .level = 70},
    { .volt = 3903, .cur = 172, .level = 65},
    { .volt = 3886, .cur = 172, .level = 60},
    { .volt = 3858, .cur = 176, .level = 55},
    { .volt = 3842, .cur = 176, .level = 50},
    { .volt = 3818, .cur = 176, .level = 45},
    { .volt = 3789, .cur = 180, .level = 40},
    { .volt = 3769, .cur = 180, .level = 35},
    { .volt = 3749, .cur = 184, .level = 30},
    { .volt = 3732, .cur = 184, .level = 25},
    { .volt = 3716, .cur = 184, .level = 20},
    { .volt = 3708, .cur = 184, .level = 15},
    { .volt = 3716, .cur = 96, .level = 10},
    { .volt = 3700, .cur = 96, .level = 5},
    { .volt = 3684, .cur = 96, .level = 0},
};

static const struct s3c_adc_bat_thresh bat_lut_acin[] = {
    { .volt = 4130, .cur = 0, .level = 100},
    { .volt = 3982, .cur = 0, .level = 50},
    { .volt = 3854, .cur = 0, .level = 10},
    { .volt = 3841, .cur = 0, .level = 0},
};

static int h1940_bat_init(void)
{
    int ret;

    ret = gpio_request(H1940_LATCH_SM803_ENABLE, "h1940-charger-enable");
    if (ret)
        return ret;
    gpio_direction_output(H1940_LATCH_SM803_ENABLE, 0);

    return 0;

}

static void h1940_bat_exit(void)
{
    gpio_free(H1940_LATCH_SM803_ENABLE);
}

static void h1940_enable_charger(void)
{
    gpio_set_value(H1940_LATCH_SM803_ENABLE, 1);
}

static void h1940_disable_charger(void)
{
    gpio_set_value(H1940_LATCH_SM803_ENABLE, 0);
}

static struct s3c_adc_bat_pdata h1940_bat_cfg = {
    .init = h1940_bat_init,
    .exit = h1940_bat_exit,
    .enable_charger = h1940_enable_charger,
    .disable_charger = h1940_disable_charger,
    .gpio_charge_finished = S3C2410_GPF(3),
    .gpio_inverted = 1,
    .lut_noac = bat_lut_noac,
    .lut_noac_cnt = ARRAY_SIZE(bat_lut_noac),
    .lut_acin = bat_lut_acin,
    .lut_acin_cnt = ARRAY_SIZE(bat_lut_acin),
    .volt_channel = 0,
    .current_channel = 1,
    .volt_mult = 4056,
    .current_mult = 1893,
    .internal_impedance = 200,
    .backup_volt_channel = 3,
    /* TODO Check backup volt multiplier */
    .backup_volt_mult = 4056,
    .backup_volt_min = 0,
    .backup_volt_max = 4149288
};

static struct platform_device h1940_battery = {
    .name             = "s3c-adc-battery",
    .id               = -1,
    .dev = {
        .parent = &s3c_device_adc.dev,
        .platform_data = &h1940_bat_cfg,
    },
};

static DEFINE_SPINLOCK(h1940_blink_spin);

int h1940_led_blink_set(unsigned gpio, int state,
    unsigned long *delay_on, unsigned long *delay_off)
{
    int blink_gpio, check_gpio1, check_gpio2;

    switch (gpio) {
    case H1940_LATCH_LED_GREEN:
        blink_gpio = S3C2410_GPA(7);
        check_gpio1 = S3C2410_GPA(1);
        check_gpio2 = S3C2410_GPA(3);
        break;
    case H1940_LATCH_LED_RED:
        blink_gpio = S3C2410_GPA(1);
        check_gpio1 = S3C2410_GPA(7);
        check_gpio2 = S3C2410_GPA(3);
        break;
    default:
        blink_gpio = S3C2410_GPA(3);
        check_gpio1 = S3C2410_GPA(1);
        check_gpio2 = S3C2410_GPA(7);
        break;
    }

    if (delay_on && delay_off && !*delay_on && !*delay_off)
        *delay_on = *delay_off = 500;

    spin_lock(&h1940_blink_spin);

    switch (state) {
    case GPIO_LED_NO_BLINK_LOW:
    case GPIO_LED_NO_BLINK_HIGH:
        if (!gpio_get_value(check_gpio1) &&
            !gpio_get_value(check_gpio2))
            gpio_set_value(H1940_LATCH_LED_FLASH, 0);
        gpio_set_value(blink_gpio, 0);
        if (gpio_is_valid(gpio))
            gpio_set_value(gpio, state);
        break;
    case GPIO_LED_BLINK:
        if (gpio_is_valid(gpio))
            gpio_set_value(gpio, 0);
        gpio_set_value(H1940_LATCH_LED_FLASH, 1);
        gpio_set_value(blink_gpio, 1);
        break;
    }

    spin_unlock(&h1940_blink_spin);

    return 0;
}
EXPORT_SYMBOL(h1940_led_blink_set);

static struct gpio_led h1940_leds_desc[] = {
    {
        .name           = "Green",
        .default_trigger    = "main-battery-full",
        .gpio           = H1940_LATCH_LED_GREEN,
        .retain_state_suspended = 1,
    },
    {
        .name           = "Red",
        .default_trigger
            = "main-battery-charging-blink-full-solid",
        .gpio           = H1940_LATCH_LED_RED,
        .retain_state_suspended = 1,
    },
};

static struct gpio_led_platform_data h1940_leds_pdata = {
    .num_leds   = ARRAY_SIZE(h1940_leds_desc),
    .leds       = h1940_leds_desc,
    .gpio_blink_set = h1940_led_blink_set,
};

static struct platform_device h1940_device_leds = {
    .name   = "leds-gpio",
    .id = -1,
    .dev    = {
            .platform_data = &h1940_leds_pdata,
    },
};

static struct platform_device h1940_device_bluetooth = {
    .name             = "h1940-bt",
    .id               = -1,
};

static void h1940_set_mmc_power(unsigned char power_mode, unsigned short vdd)
{
    switch (power_mode) {
    case MMC_POWER_OFF:
        gpio_set_value(H1940_LATCH_SD_POWER, 0);
        break;
    case MMC_POWER_UP:
    case MMC_POWER_ON:
        gpio_set_value(H1940_LATCH_SD_POWER, 1);
        break;
    default:
        break;
    }
}

static struct s3c24xx_mci_pdata h1940_mmc_cfg __initdata = {
    .gpio_detect   = S3C2410_GPF(5),
    .gpio_wprotect = S3C2410_GPH(8),
    .set_power     = h1940_set_mmc_power,
    .ocr_avail     = MMC_VDD_32_33,
};

static int h1940_backlight_init(struct device *dev)
{
    gpio_request(S3C2410_GPB(0), "Backlight");

    gpio_direction_output(S3C2410_GPB(0), 0);
    s3c_gpio_setpull(S3C2410_GPB(0), S3C_GPIO_PULL_NONE);
    s3c_gpio_cfgpin(S3C2410_GPB(0), S3C2410_GPB0_TOUT0);
    gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 1);

    return 0;
}

static int h1940_backlight_notify(struct device *dev, int brightness)
{
    if (!brightness) {
        gpio_direction_output(S3C2410_GPB(0), 1);
        gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 0);
    } else {
        gpio_direction_output(S3C2410_GPB(0), 0);
        s3c_gpio_setpull(S3C2410_GPB(0), S3C_GPIO_PULL_NONE);
        s3c_gpio_cfgpin(S3C2410_GPB(0), S3C2410_GPB0_TOUT0);
        gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 1);
    }
    return brightness;
}

static void h1940_backlight_exit(struct device *dev)
{
    gpio_direction_output(S3C2410_GPB(0), 1);
    gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 0);
}


static struct platform_pwm_backlight_data backlight_data = {
    .pwm_id         = 0,
    .max_brightness = 100,
    .dft_brightness = 50,
    /* tcnt = 0x31 */
    .pwm_period_ns  = 36296,
    .init           = h1940_backlight_init,
    .notify     = h1940_backlight_notify,
    .exit           = h1940_backlight_exit,
};

static struct platform_device h1940_backlight = {
    .name = "pwm-backlight",
    .dev  = {
        .parent = &s3c_device_timer[0].dev,
        .platform_data = &backlight_data,
    },
    .id   = -1,
};

static void h1940_lcd_power_set(struct plat_lcd_data *pd,
                    unsigned int power)
{
    int value, retries = 100;

    if (!power) {
        gpio_set_value(S3C2410_GPC(0), 0);
        /* wait for 3ac */
        do {
            value = gpio_get_value(S3C2410_GPC(6));
        } while (value && retries--);

        gpio_set_value(H1940_LATCH_LCD_P2, 0);
        gpio_set_value(H1940_LATCH_LCD_P3, 0);
        gpio_set_value(H1940_LATCH_LCD_P4, 0);

        gpio_direction_output(S3C2410_GPC(1), 0);
        gpio_direction_output(S3C2410_GPC(4), 0);

        gpio_set_value(H1940_LATCH_LCD_P1, 0);
        gpio_set_value(H1940_LATCH_LCD_P0, 0);

        gpio_set_value(S3C2410_GPC(5), 0);

    } else {
        gpio_set_value(H1940_LATCH_LCD_P0, 1);
        gpio_set_value(H1940_LATCH_LCD_P1, 1);

        gpio_direction_input(S3C2410_GPC(1));
        gpio_direction_input(S3C2410_GPC(4));
        mdelay(10);
        s3c_gpio_cfgpin(S3C2410_GPC(1), S3C_GPIO_SFN(2));
        s3c_gpio_cfgpin(S3C2410_GPC(4), S3C_GPIO_SFN(2));

        gpio_set_value(S3C2410_GPC(5), 1);
        gpio_set_value(S3C2410_GPC(0), 1);

        gpio_set_value(H1940_LATCH_LCD_P3, 1);
        gpio_set_value(H1940_LATCH_LCD_P2, 1);
        gpio_set_value(H1940_LATCH_LCD_P4, 1);
    }
}

static struct plat_lcd_data h1940_lcd_power_data = {
    .set_power      = h1940_lcd_power_set,
};

static struct platform_device h1940_lcd_powerdev = {
    .name                   = "platform-lcd",
    .dev.parent             = &s3c_device_lcd.dev,
    .dev.platform_data      = &h1940_lcd_power_data,
};

static struct uda1380_platform_data uda1380_info = {
    .gpio_power = H1940_LATCH_UDA_POWER,
    .gpio_reset = S3C2410_GPA(12),
    .dac_clk    = UDA1380_DAC_CLK_SYSCLK,
};

static struct i2c_board_info h1940_i2c_devices[] = {
    {
        I2C_BOARD_INFO("uda1380", 0x1a),
        .platform_data = &uda1380_info,
    },
};

#define DECLARE_BUTTON(p, k, n, w)  \
    {               \
        .gpio       = p,    \
        .code       = k,    \
        .desc       = n,    \
        .wakeup     = w,    \
        .active_low = 1,    \
    }

static struct gpio_keys_button h1940_buttons[] = {
    DECLARE_BUTTON(S3C2410_GPF(0),       KEY_POWER,          "Power", 1),
    DECLARE_BUTTON(S3C2410_GPF(6),       KEY_ENTER,         "Select", 1),
    DECLARE_BUTTON(S3C2410_GPF(7),      KEY_RECORD,         "Record", 0),
    DECLARE_BUTTON(S3C2410_GPG(0),         KEY_F11,       "Calendar", 0),
    DECLARE_BUTTON(S3C2410_GPG(2),         KEY_F12,       "Contacts", 0),
    DECLARE_BUTTON(S3C2410_GPG(3),        KEY_MAIL,           "Mail", 0),
    DECLARE_BUTTON(S3C2410_GPG(6),        KEY_LEFT,     "Left_arrow", 0),
    DECLARE_BUTTON(S3C2410_GPG(7),    KEY_HOMEPAGE,           "Home", 0),
    DECLARE_BUTTON(S3C2410_GPG(8),       KEY_RIGHT,    "Right_arrow", 0),
    DECLARE_BUTTON(S3C2410_GPG(9),          KEY_UP,       "Up_arrow", 0),
    DECLARE_BUTTON(S3C2410_GPG(10),       KEY_DOWN,     "Down_arrow", 0),
};

static struct gpio_keys_platform_data h1940_buttons_data = {
    .buttons    = h1940_buttons,
    .nbuttons   = ARRAY_SIZE(h1940_buttons),
};

static struct platform_device h1940_dev_buttons = {
    .name       = "gpio-keys",
    .id     = -1,
    .dev        = {
        .platform_data  = &h1940_buttons_data,
    }
};

static struct platform_device *h1940_devices[] __initdata = {
    &h1940_dev_buttons,
    &s3c_device_ohci,
    &s3c_device_lcd,
    &s3c_device_wdt,
    &s3c_device_i2c0,
    &s3c_device_iis,
    &samsung_asoc_dma,
    &s3c_device_usbgadget,
    &h1940_device_leds,
    &h1940_device_bluetooth,
    &s3c_device_sdi,
    &s3c_device_rtc,
    &s3c_device_timer[0],
    &h1940_backlight,
    &h1940_lcd_powerdev,
    &s3c_device_adc,
    &s3c_device_ts,
    &power_supply,
    &h1940_battery,
};

static void __init h1940_map_io(void)
{
    s3c24xx_init_io(h1940_iodesc, ARRAY_SIZE(h1940_iodesc));
    s3c24xx_init_clocks(0);
    s3c24xx_init_uarts(h1940_uartcfgs, ARRAY_SIZE(h1940_uartcfgs));

    /* setup PM */

#ifdef CONFIG_PM_H1940
    memcpy(phys_to_virt(H1940_SUSPEND_RESUMEAT), h1940_pm_return, 1024);
#endif
    s3c_pm_init();

    /* Add latch gpio chip, set latch initial value */
    h1940_latch_control(0, 0);
    WARN_ON(gpiochip_add(&h1940_latch_gpiochip));
}

/* H1940 and RX3715 need to reserve this for suspend */
static void __init h1940_reserve(void)
{
    memblock_reserve(0x30003000, 0x1000);
    memblock_reserve(0x30081000, 0x1000);
}

static void __init h1940_init_irq(void)
{
    s3c24xx_init_irq();
}

static void __init h1940_init(void)
{
    u32 tmp;

    s3c24xx_fb_set_platdata(&h1940_fb_info);
    s3c24xx_mci_set_platdata(&h1940_mmc_cfg);
    s3c24xx_udc_set_platdata(&h1940_udc_cfg);
    s3c24xx_ts_set_platdata(&h1940_ts_cfg);
    s3c_i2c0_set_platdata(NULL);

    /* Turn off suspend on both USB ports, and switch the
     * selectable USB port to USB device mode. */

    s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
                  S3C2410_MISCCR_USBSUSPND0 |
                  S3C2410_MISCCR_USBSUSPND1, 0x0);

    tmp =   (0x78 << S3C24XX_PLL_MDIV_SHIFT)
          | (0x02 << S3C24XX_PLL_PDIV_SHIFT)
          | (0x03 << S3C24XX_PLL_SDIV_SHIFT);
    writel(tmp, S3C2410_UPLLCON);

    gpio_request(S3C2410_GPC(0), "LCD power");
    gpio_request(S3C2410_GPC(1), "LCD power");
    gpio_request(S3C2410_GPC(4), "LCD power");
    gpio_request(S3C2410_GPC(5), "LCD power");
    gpio_request(S3C2410_GPC(6), "LCD power");
    gpio_request(H1940_LATCH_LCD_P0, "LCD power");
    gpio_request(H1940_LATCH_LCD_P1, "LCD power");
    gpio_request(H1940_LATCH_LCD_P2, "LCD power");
    gpio_request(H1940_LATCH_LCD_P3, "LCD power");
    gpio_request(H1940_LATCH_LCD_P4, "LCD power");
    gpio_request(H1940_LATCH_MAX1698_nSHUTDOWN, "LCD power");
    gpio_direction_output(S3C2410_GPC(0), 0);
    gpio_direction_output(S3C2410_GPC(1), 0);
    gpio_direction_output(S3C2410_GPC(4), 0);
    gpio_direction_output(S3C2410_GPC(5), 0);
    gpio_direction_input(S3C2410_GPC(6));
    gpio_direction_output(H1940_LATCH_LCD_P0, 0);
    gpio_direction_output(H1940_LATCH_LCD_P1, 0);
    gpio_direction_output(H1940_LATCH_LCD_P2, 0);
    gpio_direction_output(H1940_LATCH_LCD_P3, 0);
    gpio_direction_output(H1940_LATCH_LCD_P4, 0);
    gpio_direction_output(H1940_LATCH_MAX1698_nSHUTDOWN, 0);

    gpio_request(H1940_LATCH_SD_POWER, "SD power");
    gpio_direction_output(H1940_LATCH_SD_POWER, 0);

    platform_add_devices(h1940_devices, ARRAY_SIZE(h1940_devices));

    gpio_request(S3C2410_GPA(1), "Red LED blink");
    gpio_request(S3C2410_GPA(3), "Blue LED blink");
    gpio_request(S3C2410_GPA(7), "Green LED blink");
    gpio_request(H1940_LATCH_LED_FLASH, "LED blink");
    gpio_direction_output(S3C2410_GPA(1), 0);
    gpio_direction_output(S3C2410_GPA(3), 0);
    gpio_direction_output(S3C2410_GPA(7), 0);
    gpio_direction_output(H1940_LATCH_LED_FLASH, 0);

    i2c_register_board_info(0, h1940_i2c_devices,
        ARRAY_SIZE(h1940_i2c_devices));
}

MACHINE_START(H1940, "IPAQ-H1940")
    /* Maintainer: Ben Dooks <[email protected]> */
    .atag_offset    = 0x100,
    .map_io     = h1940_map_io,
    .reserve    = h1940_reserve,
    .init_irq   = h1940_init_irq,
    .init_machine   = h1940_init,
    .timer      = &s3c24xx_timer,
    .restart    = s3c2410_restart,
MACHINE_END