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ARM: EXYNOS4: Add PWM backlight support on SMDKC210

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

Signed-off-by: Banajit Goswami <banajit.g@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This commit is contained in:
Banajit Goswami 2011-07-20 23:45:21 +09:00 • committed by Kukjin Kim
parent 8689de73a8
commit fef469f7c2
2 changed files with 18 additions and 0 deletions
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2
arch/arm/mach-exynos4/Kconfig
View file

@ -110,6 +110,8 @@ config MACH_SMDKC210
select S3C_DEV_HSMMC1
select S3C_DEV_HSMMC2
select S3C_DEV_HSMMC3
select SAMSUNG_DEV_PWM
select SAMSUNG_DEV_BACKLIGHT
select EXYNOS4_DEV_PD
select EXYNOS4_DEV_SYSMMU
select EXYNOS4_SETUP_I2C1

16
arch/arm/mach-exynos4/mach-smdkc210.c
View file

@ -15,6 +15,7 @@
#include <linux/smsc911x.h>
#include <linux/io.h>
#include <linux/i2c.h>
#include <linux/pwm_backlight.h>
#include <asm/mach/arch.h>
#include <asm/mach-types.h>
@ -27,6 +28,8 @@
#include <plat/sdhci.h>
#include <plat/iic.h>
#include <plat/pd.h>
#include <plat/gpio-cfg.h>
#include <plat/backlight.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);
}
/* 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)
{
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_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));
}