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Commit 9edff0f7 authored by Giridhar Maruthy's avatar Giridhar Maruthy Committed by Kukjin Kim
Browse files

ARM: EXYNOS4: Add PWM backlight support on ORIGEN 



This patch adds support for LCD backlight using PWM timer
on ORIGEN board.

Signed-off-by: default avatarGiridhar Maruthy <giridhar.maruthy@linaro.org>
Signed-off-by: default avatarSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: default avatarKukjin Kim <kgene.kim@samsung.com>
parent 6f8eb324

arch/arm/mach-exynos4/Kconfig

+2 −0
Original line number Diff line number Diff line
@@ -229,6 +229,8 @@ config MACH_ORIGEN 
	select S5P_DEV_FIMC2

	select S5P_DEV_FIMC3

	select S5P_DEV_USB_EHCI

	select SAMSUNG_DEV_BACKLIGHT

	select SAMSUNG_DEV_PWM

	select EXYNOS4_SETUP_SDHCI

	select EXYNOS4_SETUP_USB_PHY

	help

arch/arm/mach-exynos4/mach-origen.c

+16 −0
Original line number Diff line number Diff line
@@ -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>
@@ -26,6 +27,8 @@ 
#include <plat/iic.h>

#include <plat/ehci.h>

#include <plat/clock.h>

#include <plat/gpio-cfg.h>

#include <plat/backlight.h>



#include <mach/map.h>
@@ -102,6 +105,17 @@ static struct platform_device *origen_devices[] __initdata = { 
	&s5p_device_fimc3,

};



/* 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);
@@ -117,6 +131,8 @@ static void __init origen_machine_init(void) 
	clk_xusbxti.rate = 24000000;



	platform_add_devices(origen_devices, ARRAY_SIZE(origen_devices));



	samsung_bl_set(&origen_bl_gpio_info, &origen_bl_data);

}



MACHINE_START(ORIGEN, "ORIGEN")