1 files changed, 77 insertions, 0 deletions

diff --git a/arch/arm/mach-s3c2410/mach-h1940.c b/arch/arm/mach-s3c2410/mach-h1940.c
index 02375ca..4905325 100644
--- a/arch/arm/mach-s3c2410/mach-h1940.c
+++ b/arch/arm/mach-s3c2410/mach-h1940.c
@@ -22,6 +22,8 @@
 #include <linux/platform_device.h>
 #include <linux/io.h>
 #include <linux/gpio.h>
+#include <linux/pwm_backlight.h>
+#include <video/platform_lcd.h>
 
 #include <linux/mmc/host.h>
 
@@ -195,6 +197,73 @@ static struct s3c24xx_mci_pdata h1940_mmc_cfg = {
 	.ocr_avail     = MMC_VDD_32_33,
 };
 
+static int h1940_backlight_init(struct device *dev)
+{
+	gpio_request(S3C2410_GPB(0), "Backlight");
+
+	s3c2410_gpio_setpin(S3C2410_GPB(0), 0);
+	s3c2410_gpio_pullup(S3C2410_GPB(0), 0);
+	s3c2410_gpio_cfgpin(S3C2410_GPB(0), S3C2410_GPB0_TOUT0);
+
+	return 0;
+}
+
+static void h1940_backlight_exit(struct device *dev)
+{
+	s3c2410_gpio_cfgpin(S3C2410_GPB(0), 1/*S3C2410_GPB0_OUTP*/);
+}
+
+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,
+	.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;
+
+	if (!power) {
+		/* set to 3ec */
+		s3c2410_gpio_setpin(S3C2410_GPC(0), 0);
+		/* wait for 3ac */
+		do {
+			value = s3c2410_gpio_getpin(S3C2410_GPC(6));
+		} while (value);
+		/* set to 38c */
+		s3c2410_gpio_setpin(S3C2410_GPC(5), 0);
+	} else {
+		/* Set to 3ac */
+		s3c2410_gpio_setpin(S3C2410_GPC(5), 1);
+		/* Set to 3ad */
+		s3c2410_gpio_setpin(S3C2410_GPC(0), 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 platform_device *h1940_devices[] __initdata = {
 	&s3c_device_usb,
 	&s3c_device_lcd,
@@ -206,6 +275,9 @@ static struct platform_device *h1940_devices[] __initdata = {
 	&h1940_device_bluetooth,
 	&s3c_device_sdi,
 	&s3c_device_rtc,
+	&s3c_device_timer[0],
+	&h1940_backlight,
+	&h1940_lcd_powerdev,
 };
 
 static void __init h1940_map_io(void)
@@ -249,6 +321,11 @@ static void __init h1940_init(void)
 	      | (0x03 << S3C24XX_PLLCON_SDIVSHIFT);
 	writel(tmp, S3C2410_UPLLCON);
 
+	gpio_request(S3C2410_GPC(0), "LCD power");
+	gpio_request(S3C2410_GPC(5), "LCD power");
+	gpio_request(S3C2410_GPC(6), "LCD power");
+
+
 	platform_add_devices(h1940_devices, ARRAY_SIZE(h1940_devices));
 }