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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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