This patch enables lcd and backlight drivers in NURI board.
Signed-off-by: Donghwa Lee <dh09.lee@xxxxxxxxxxx>
Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
---
Changes since v1:
- Adds backlight platform data to control brightness and GPIO
- Modify inappropriate function name and remove useless codes.
- And so on.
arch/arm/mach-exynos4/Kconfig | 1 +
arch/arm/mach-exynos4/mach-nuri.c | 81 +++++++++++++++++++++++++++++++++++++
2 files changed, 82 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-exynos4/Kconfig b/arch/arm/mach-exynos4/Kconfig
index 5bf00b9..de31e4d 100644
--- a/arch/arm/mach-exynos4/Kconfig
+++ b/arch/arm/mach-exynos4/Kconfig
@@ -135,6 +135,7 @@ config MACH_NURI
select EXYNOS4_SETUP_I2C1
select EXYNOS4_SETUP_I2C5
select EXYNOS4_SETUP_SDHCI
+ select SAMSUNG_DEV_PWM
help
Machine support for Samsung Mobile NURI Board.
diff --git a/arch/arm/mach-exynos4/mach-nuri.c b/arch/arm/mach-exynos4/mach-nuri.c
index 28010bd..d19aed0 100644
--- a/arch/arm/mach-exynos4/mach-nuri.c
+++ b/arch/arm/mach-exynos4/mach-nuri.c
@@ -17,6 +17,10 @@
#include <linux/regulator/machine.h>
#include <linux/regulator/fixed.h>
#include <linux/mmc/host.h>
+#include <linux/fb.h>
+#include <linux/pwm_backlight.h>
+
+#include <video/platform_lcd.h>
#include <asm/mach/arch.h>
#include <asm/mach-types.h>
@@ -181,6 +185,79 @@ static struct platform_device nuri_gpio_keys = {
},
};
+static void nuri_lcd_power_on(struct plat_lcd_data *pd, unsigned int power)
+{
+ int gpio = EXYNOS4_GPE1(5);
+
+ if (power)
+ gpio_direction_output(gpio, 1);
+ else
+ gpio_direction_output(gpio, 0);
+}
+
+static int nuri_bl_init(struct device *dev)
+{
+ int ret, gpio = EXYNOS4_GPE2(3);
+
+ ret = gpio_request(gpio, "LCD_LDO_EN");
+ if (!ret)
+ gpio_direction_output(gpio, 0);
+
+ return 0;
+}
+
+static int nuri_bl_notify(struct device *dev, int brightness)
+{
+ if (brightness < 1)
+ brightness = 1;
+
+ gpio_set_value(EXYNOS4_GPE2(3), 1);
+
+ return brightness;
+}
+
+static void nuri_bl_exit(struct device *dev)
+{
+ gpio_free(EXYNOS4_GPE2(3));
+}
+
+/* nuri pwm backlight */
+static struct platform_pwm_backlight_data nuri_backlight_data = {
+ .pwm_id = 0,
+ .pwm_period_ns = 30000,
+ .max_brightness = 100,
+ .dft_brightness = 50,
+ .init = nuri_bl_init,
+ .notify = nuri_bl_notify,
+ .exit = nuri_bl_exit,
+};
+
+static struct platform_device nuri_backlight_device = {
+ .name = "pwm-backlight",
+ .id = -1,
+ .dev = {
+ .parent = &s3c_device_timer[0].dev,
+ .platform_data = &nuri_backlight_data,
+ },
+};
+
+static struct plat_lcd_data nuri_lcd_platform_data = {
+ .set_power = nuri_lcd_power_on,
+};
+
+static struct platform_device nuri_lcd_device = {
+ .name = "platform-lcd",
+ .id = -1,
+ .dev = {
+ .platform_data = (void *) &nuri_lcd_platform_data,
+ },
+};
+
+static void __init nuri_fb_init(void)
+{
+ gpio_request(EXYNOS4_GPE1(5), "LVDS_nSHDN");
+}
+
/* I2C1 */
static struct i2c_board_info i2c1_devs[] __initdata = {
/* Gyro, To be updated */
@@ -201,8 +278,11 @@ static struct platform_device *nuri_devices[] __initdata = {
&s3c_device_wdt,
#endif
+ &s3c_device_timer[0],
/* NURI Devices */
&nuri_gpio_keys,
+ &nuri_lcd_device,
+ &nuri_backlight_device,
};
static void __init nuri_map_io(void)
@@ -219,6 +299,7 @@ static void __init nuri_machine_init(void)
i2c_register_board_info(1, i2c1_devs, ARRAY_SIZE(i2c1_devs));
i2c_register_board_info(5, i2c5_devs, ARRAY_SIZE(i2c5_devs));
+ nuri_fb_init();
/* Last */
platform_add_devices(nuri_devices, ARRAY_SIZE(nuri_devices));
}
--
1.6.0.4
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