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Commit 8689de73 authored by Banajit Goswami's avatar Banajit Goswami Committed by Kukjin Kim
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ARM: EXYNOS4: Add PWM backlight support on SMDKV310 



This patch adds support for LCD backlight using PWM timer for
Samsung SMDKV310 board.

Signed-off-by: default avatarBanajit Goswami <banajit.g@samsung.com>
Signed-off-by: default avatarKukjin Kim <kgene.kim@samsung.com>
parent f00207b2

arch/arm/mach-exynos4/Kconfig

+2 −0
Original line number Original line Diff line number Diff line
@@ -127,8 +127,10 @@ config MACH_SMDKV310 
	select S3C_DEV_HSMMC1

	select S3C_DEV_HSMMC1

	select S3C_DEV_HSMMC2

	select S3C_DEV_HSMMC2

	select S3C_DEV_HSMMC3

	select S3C_DEV_HSMMC3

	select SAMSUNG_DEV_BACKLIGHT

	select SAMSUNG_DEV_KEYPAD

	select SAMSUNG_DEV_KEYPAD

	select EXYNOS4_DEV_PD

	select EXYNOS4_DEV_PD

	select SAMSUNG_DEV_PWM

	select EXYNOS4_DEV_SYSMMU

	select EXYNOS4_DEV_SYSMMU

	select EXYNOS4_SETUP_I2C1

	select EXYNOS4_SETUP_I2C1

	select EXYNOS4_SETUP_KEYPAD

	select EXYNOS4_SETUP_KEYPAD

arch/arm/mach-exynos4/mach-smdkv310.c

+16 −0
Original line number Original line Diff line number Diff line
@@ -16,6 +16,7 @@ 
#include <linux/io.h>

#include <linux/io.h>

#include <linux/i2c.h>

#include <linux/i2c.h>

#include <linux/input.h>

#include <linux/input.h>

#include <linux/pwm_backlight.h>





#include <asm/mach/arch.h>

#include <asm/mach/arch.h>

#include <asm/mach-types.h>

#include <asm/mach-types.h>
@@ -29,6 +30,8 @@ 
#include <plat/sdhci.h>

#include <plat/sdhci.h>

#include <plat/iic.h>

#include <plat/iic.h>

#include <plat/pd.h>

#include <plat/pd.h>

#include <plat/gpio-cfg.h>

#include <plat/backlight.h>





#include <mach/map.h>

#include <mach/map.h>
@@ -209,6 +212,17 @@ static void __init smdkv310_smsc911x_init(void) 
		     (0x1 << S5P_SROM_BCX__TACS__SHIFT), S5P_SROM_BC1);

		     (0x1 << S5P_SROM_BCX__TACS__SHIFT), S5P_SROM_BC1);

}

}





/* LCD Backlight data */

static struct samsung_bl_gpio_info smdkv310_bl_gpio_info = {

	.no = EXYNOS4_GPD0(1),

	.func = S3C_GPIO_SFN(2),

};



static struct platform_pwm_backlight_data smdkv310_bl_data = {

	.pwm_id = 1,

	.pwm_period_ns  = 1000,

};



static void __init smdkv310_map_io(void)

static void __init smdkv310_map_io(void)

{

{

	s5p_init_io(NULL, 0, S5P_VA_CHIPID);

	s5p_init_io(NULL, 0, S5P_VA_CHIPID);
@@ -230,6 +244,8 @@ static void __init smdkv310_machine_init(void) 




	samsung_keypad_set_platdata(&smdkv310_keypad_data);

	samsung_keypad_set_platdata(&smdkv310_keypad_data);





	samsung_bl_set(&smdkv310_bl_gpio_info, &smdkv310_bl_data);



	platform_add_devices(smdkv310_devices, ARRAY_SIZE(smdkv310_devices));

	platform_add_devices(smdkv310_devices, ARRAY_SIZE(smdkv310_devices));

}

}