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-rw-r--r--arch/arm/mach-s3c2410/mach-h1940.c77
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));
}
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