From: Giridhar Maruthy giridhar.maruthy@linaro.org
This patch adds support for LCD backlight using PWM timer on Origen board.
Signed-off-by: Giridhar Maruthy giridhar.maruthy@linaro.org Signed-off-by: Sachin Kamat sachin.kamat@linaro.org --- arch/arm/mach-exynos4/Kconfig | 2 ++ arch/arm/mach-exynos4/mach-origen.c | 16 ++++++++++++++++ 2 files changed, 18 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-exynos4/Kconfig b/arch/arm/mach-exynos4/Kconfig index e6925de..3e9138e 100644 --- a/arch/arm/mach-exynos4/Kconfig +++ b/arch/arm/mach-exynos4/Kconfig @@ -230,6 +230,8 @@ config MACH_ORIGEN select S3C_DEV_RTC select S3C_DEV_WDT select S3C_DEV_HSMMC2 + select SAMSUNG_DEV_BACKLIGHT + select SAMSUNG_DEV_PWM select EXYNOS4_SETUP_SDHCI help Machine support for ORIGEN based on Samsung EXYNOS4210 diff --git a/arch/arm/mach-exynos4/mach-origen.c b/arch/arm/mach-exynos4/mach-origen.c index ed59f86..b871815 100644 --- a/arch/arm/mach-exynos4/mach-origen.c +++ b/arch/arm/mach-exynos4/mach-origen.c @@ -14,6 +14,7 @@ #include <linux/platform_device.h> #include <linux/io.h> #include <linux/input.h> +#include <linux/pwm_backlight.h>
#include <asm/mach/arch.h> #include <asm/mach-types.h> @@ -24,6 +25,8 @@ #include <plat/devs.h> #include <plat/sdhci.h> #include <plat/iic.h> +#include <plat/gpio-cfg.h> +#include <plat/backlight.h>
#include <mach/map.h>
@@ -85,6 +88,17 @@ static struct platform_device *origen_devices[] __initdata = { &s3c_device_wdt, };
+/* LCD Backlight data */ +static struct samsung_bl_gpio_info origen_bl_gpio_info = { + .no = EXYNOS4_GPD0(0), + .func = S3C_GPIO_SFN(2), +}; + +static struct platform_pwm_backlight_data origen_bl_data = { + .pwm_id = 0, + .pwm_period_ns = 1000, +}; + static void __init origen_map_io(void) { s5p_init_io(NULL, 0, S5P_VA_CHIPID); @@ -96,6 +110,8 @@ static void __init origen_machine_init(void) { s3c_sdhci2_set_platdata(&origen_hsmmc2_pdata); platform_add_devices(origen_devices, ARRAY_SIZE(origen_devices)); + + samsung_bl_set(&origen_bl_gpio_info, &origen_bl_data); }
MACHINE_START(ORIGEN, "ORIGEN")