diff options
| author | Banajit Goswami <banajit.g@samsung.com> | 2011-07-20 23:45:22 +0900 |
|---|---|---|
| committer | Kukjin Kim <kgene.kim@samsung.com> | 2011-07-21 02:10:35 +0900 |
| commit | 1cad6766ef113a8054a9cd36fdde3f1bbd50138a (patch) | |
| tree | bf1b5558ec099c4a434fa640d9212cd61b2d07e5 | |
| parent | 84ca326c7c77926ccb501eaa89f50d9230a9543b (diff) | |
| download | linux-1cad6766ef113a8054a9cd36fdde3f1bbd50138a.tar.bz2 | |
ARM: S5PC100: Add PWM backlight support on SMDKC100
This patch adds support for LCD backlight using PWM timer for
Samsung SMDKC100 board.
Signed-off-by: Banajit Goswami <banajit.g@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
| -rw-r--r-- | arch/arm/mach-s5pc100/Kconfig | 1 | ||||
| -rw-r--r-- | arch/arm/mach-s5pc100/mach-smdkc100.c | 55 |
2 files changed, 15 insertions, 41 deletions
diff --git a/arch/arm/mach-s5pc100/Kconfig b/arch/arm/mach-s5pc100/Kconfig index 608722ff4f28..e8a33c4b054c 100644 --- a/arch/arm/mach-s5pc100/Kconfig +++ b/arch/arm/mach-s5pc100/Kconfig @@ -56,6 +56,7 @@ config MACH_SMDKC100 select S3C_DEV_RTC select S3C_DEV_WDT select SAMSUNG_DEV_ADC + select SAMSUNG_DEV_BACKLIGHT select SAMSUNG_DEV_IDE select SAMSUNG_DEV_KEYPAD select SAMSUNG_DEV_PWM diff --git a/arch/arm/mach-s5pc100/mach-smdkc100.c b/arch/arm/mach-s5pc100/mach-smdkc100.c index 0525cb3ef406..c89d6ecb450d 100644 --- a/arch/arm/mach-s5pc100/mach-smdkc100.c +++ b/arch/arm/mach-s5pc100/mach-smdkc100.c @@ -51,6 +51,7 @@ #include <plat/keypad.h> #include <plat/ts.h> #include <plat/audio.h> +#include <plat/backlight.h> /* Following are default values for UCON, ULCON and UFCON UART registers */ #define SMDKC100_UCON_DEFAULT (S3C2410_UCON_TXILEVEL | \ @@ -179,45 +180,6 @@ static struct samsung_keypad_platdata smdkc100_keypad_data __initdata = { .cols = 8, }; -static int smdkc100_backlight_init(struct device *dev) -{ - int ret; - - ret = gpio_request(S5PC100_GPD(0), "Backlight"); - if (ret) { - printk(KERN_ERR "failed to request GPF for PWM-OUT0\n"); - return ret; - } - - /* Configure GPIO pin with S5PC100_GPD_TOUT_0 */ - s3c_gpio_cfgpin(S5PC100_GPD(0), S3C_GPIO_SFN(2)); - - return 0; -} - -static void smdkc100_backlight_exit(struct device *dev) -{ - s3c_gpio_cfgpin(S5PC100_GPD(0), S3C_GPIO_OUTPUT); - gpio_free(S5PC100_GPD(0)); -} - -static struct platform_pwm_backlight_data smdkc100_backlight_data = { - .pwm_id = 0, - .max_brightness = 255, - .dft_brightness = 255, - .pwm_period_ns = 78770, - .init = smdkc100_backlight_init, - .exit = smdkc100_backlight_exit, -}; - -static struct platform_device smdkc100_backlight_device = { - .name = "pwm-backlight", - .dev = { - .parent = &s3c_device_timer[0].dev, - .platform_data = &smdkc100_backlight_data, - }, -}; - static struct platform_device *smdkc100_devices[] __initdata = { &s3c_device_adc, &s3c_device_cfcon, @@ -239,8 +201,6 @@ static struct platform_device *smdkc100_devices[] __initdata = { &s5p_device_fimc1, &s5p_device_fimc2, &s5pc100_device_spdif, - &s3c_device_timer[0], - &smdkc100_backlight_device, }; static struct s3c2410_ts_mach_info s3c_ts_platform __initdata = { @@ -249,6 +209,16 @@ static struct s3c2410_ts_mach_info s3c_ts_platform __initdata = { .oversampling_shift = 2, }; +/* LCD Backlight data */ +static struct samsung_bl_gpio_info smdkc100_bl_gpio_info = { + .no = S5PC100_GPD(0), + .func = S3C_GPIO_SFN(2), +}; + +static struct platform_pwm_backlight_data smdkc100_bl_data = { + .pwm_id = 0, +}; + static void __init smdkc100_map_io(void) { s5p_init_io(NULL, 0, S5P_VA_CHIPID); @@ -276,6 +246,9 @@ static void __init smdkc100_machine_init(void) /* LCD init */ gpio_request(S5PC100_GPH0(6), "GPH0"); smdkc100_lcd_power_set(&smdkc100_lcd_power_data, 0); + + samsung_bl_set(&smdkc100_bl_gpio_info, &smdkc100_bl_data); + platform_add_devices(smdkc100_devices, ARRAY_SIZE(smdkc100_devices)); } |