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    Subject[PATCH 4/4] s3c2440: mini2440: Enable the backlight LED earlier at boot time.
    Date
    Code overtaken from:
    http://repo.or.cz/w/linux-2.6/mini2440.git

    Use flag that allows s3c24xx LED to start in the "on" state.
    This is necesary to enable LCD backlight during early boot stage.

    Signed-off-by: Marek Belisko <marek.belisko@open-nandra.com>
    Signed-off-by: Michel Pollet <buserror@gmail.com>
    ---
    arch/arm/mach-s3c2410/include/mach/leds-gpio.h | 1 +
    arch/arm/mach-s3c2440/mach-mini2440.c | 1 +
    drivers/leds/leds-s3c24xx.c | 6 +++++-
    3 files changed, 7 insertions(+), 1 deletions(-)

    diff --git a/arch/arm/mach-s3c2410/include/mach/leds-gpio.h b/arch/arm/mach-s3c2410/include/mach/leds-gpio.h
    index d8a7672..c3ae81f 100644
    --- a/arch/arm/mach-s3c2410/include/mach/leds-gpio.h
    +++ b/arch/arm/mach-s3c2410/include/mach/leds-gpio.h
    @@ -16,6 +16,7 @@

    #define S3C24XX_LEDF_ACTLOW (1<<0) /* LED is on when GPIO low */
    #define S3C24XX_LEDF_TRISTATE (1<<1) /* tristate to turn off */
    +#define S3C24XX_LEDF_STARTON (1<<2) /* Initialise 'on' */

    struct s3c24xx_led_platdata {
    unsigned int gpio;
    diff --git a/arch/arm/mach-s3c2440/mach-mini2440.c b/arch/arm/mach-s3c2440/mach-mini2440.c
    index 163d318..46f2034 100644
    --- a/arch/arm/mach-s3c2440/mach-mini2440.c
    +++ b/arch/arm/mach-s3c2440/mach-mini2440.c
    @@ -451,6 +451,7 @@ static struct s3c24xx_led_platdata mini2440_led4_pdata = {
    static struct s3c24xx_led_platdata mini2440_led_backlight_pdata = {
    .name = "backlight",
    .gpio = S3C2410_GPG(4),
    + .flags = S3C24XX_LEDF_STARTON,
    .def_trigger = "backlight",
    };

    diff --git a/drivers/leds/leds-s3c24xx.c b/drivers/leds/leds-s3c24xx.c
    index a77771d..42d0a08 100644
    --- a/drivers/leds/leds-s3c24xx.c
    +++ b/drivers/leds/leds-s3c24xx.c
    @@ -95,7 +95,11 @@ static int s3c24xx_led_probe(struct platform_device *dev)
    s3c2410_gpio_cfgpin(pdata->gpio, S3C2410_GPIO_INPUT);
    } else {
    s3c2410_gpio_pullup(pdata->gpio, 0);
    - s3c2410_gpio_setpin(pdata->gpio, 0);
    +
    + if (pdata->flags & S3C24XX_LEDF_STARTON)
    + s3c2410_gpio_setpin(pdata->gpio, 1);
    + else
    + s3c2410_gpio_setpin(pdata->gpio, 0);
    s3c2410_gpio_cfgpin(pdata->gpio, S3C2410_GPIO_OUTPUT);
    }

    --
    1.7.1


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