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authorBanajit Goswami <banajit.g@samsung.com>2011-07-20 23:45:21 +0900
committerKukjin Kim <kgene.kim@samsung.com>2011-07-21 02:10:21 +0900
commit8689de73a805781ddfb1b26df28ca127a548d235 (patch)
treee89570f43a0658fd507f78dea816593c409175b6 /arch/arm/mach-exynos4
parentf00207b255f59ebedc5965c2ab0bd1cefae70f92 (diff)
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: Banajit Goswami <banajit.g@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Diffstat (limited to 'arch/arm/mach-exynos4')
-rw-r--r--arch/arm/mach-exynos4/Kconfig2
-rw-r--r--arch/arm/mach-exynos4/mach-smdkv310.c16
2 files changed, 18 insertions, 0 deletions
diff --git a/arch/arm/mach-exynos4/Kconfig b/arch/arm/mach-exynos4/Kconfig
index 1435fc31c4b2..413448f59e9b 100644
--- a/arch/arm/mach-exynos4/Kconfig
+++ b/arch/arm/mach-exynos4/Kconfig
@@ -127,8 +127,10 @@ config MACH_SMDKV310
select S3C_DEV_HSMMC1
select S3C_DEV_HSMMC2
select S3C_DEV_HSMMC3
+ select SAMSUNG_DEV_BACKLIGHT
select SAMSUNG_DEV_KEYPAD
select EXYNOS4_DEV_PD
+ select SAMSUNG_DEV_PWM
select EXYNOS4_DEV_SYSMMU
select EXYNOS4_SETUP_I2C1
select EXYNOS4_SETUP_KEYPAD
diff --git a/arch/arm/mach-exynos4/mach-smdkv310.c b/arch/arm/mach-exynos4/mach-smdkv310.c
index edd814110da8..df1107828abd 100644
--- a/arch/arm/mach-exynos4/mach-smdkv310.c
+++ b/arch/arm/mach-exynos4/mach-smdkv310.c
@@ -16,6 +16,7 @@
#include <linux/io.h>
#include <linux/i2c.h>
#include <linux/input.h>
+#include <linux/pwm_backlight.h>
#include <asm/mach/arch.h>
#include <asm/mach-types.h>
@@ -29,6 +30,8 @@
#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>
@@ -209,6 +212,17 @@ static void __init smdkv310_smsc911x_init(void)
(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)
{
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_bl_set(&smdkv310_bl_gpio_info, &smdkv310_bl_data);
+
platform_add_devices(smdkv310_devices, ARRAY_SIZE(smdkv310_devices));
}

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