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Commit fef469f7 authored by Banajit Goswami's avatar Banajit Goswami Committed by Kukjin Kim
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ARM: EXYNOS4: Add PWM backlight support on SMDKC210 



This patch adds support for LCD backlight using PWM timer for
Samsung SMDKC210 board.

Signed-off-by: default avatarBanajit Goswami <banajit.g@samsung.com>
Signed-off-by: default avatarKukjin Kim <kgene.kim@samsung.com>
parent 8689de73

arch/arm/mach-exynos4/Kconfig

+2 −0
Original line number Original line Diff line number Diff line
@@ -110,6 +110,8 @@ config MACH_SMDKC210 
	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_PWM

	select SAMSUNG_DEV_BACKLIGHT

	select EXYNOS4_DEV_PD

	select EXYNOS4_DEV_PD

	select EXYNOS4_DEV_SYSMMU

	select EXYNOS4_DEV_SYSMMU

	select EXYNOS4_SETUP_I2C1

	select EXYNOS4_SETUP_I2C1

arch/arm/mach-exynos4/mach-smdkc210.c

+16 −0
Original line number Original line Diff line number Diff line
@@ -15,6 +15,7 @@ 
#include <linux/smsc911x.h>

#include <linux/smsc911x.h>

#include <linux/io.h>

#include <linux/io.h>

#include <linux/i2c.h>

#include <linux/i2c.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>
@@ -27,6 +28,8 @@ 
#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>
@@ -191,6 +194,17 @@ static void __init smdkc210_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 smdkc210_bl_gpio_info = {

	.no = EXYNOS4_GPD0(1),

	.func = S3C_GPIO_SFN(2),

};



static struct platform_pwm_backlight_data smdkc210_bl_data = {

	.pwm_id = 1,

	.pwm_period_ns  = 1000,

};



static void __init smdkc210_map_io(void)

static void __init smdkc210_map_io(void)

{

{

	s5p_init_io(NULL, 0, S5P_VA_CHIPID);

	s5p_init_io(NULL, 0, S5P_VA_CHIPID);
@@ -210,6 +224,8 @@ static void __init smdkc210_machine_init(void) 
	s3c_sdhci2_set_platdata(&smdkc210_hsmmc2_pdata);

	s3c_sdhci2_set_platdata(&smdkc210_hsmmc2_pdata);

	s3c_sdhci3_set_platdata(&smdkc210_hsmmc3_pdata);

	s3c_sdhci3_set_platdata(&smdkc210_hsmmc3_pdata);





	samsung_bl_set(&smdkc210_bl_gpio_info, &smdkc210_bl_data);



	platform_add_devices(smdkc210_devices, ARRAY_SIZE(smdkc210_devices));

	platform_add_devices(smdkc210_devices, ARRAY_SIZE(smdkc210_devices));

}

}