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 02:10:40 +0900 |
| commit | 499d2969574d138b9f5c8bbb911027005f4f9ed9 (patch) | |
| tree | 049548a56aa5d163f105b473196277534cb5a735 /arch | |
| parent | 1cad6766ef113a8054a9cd36fdde3f1bbd50138a (diff) | |
ARM: S5P64X0: Add PWM backlight support on SMDK6440
This patch adds support for LCD backlight using PWM timer for
Samsung SMDK6440 board.
Signed-off-by: Banajit Goswami <banajit.g@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-s5p64x0/Kconfig | 1 | ||||
| -rw-r--r-- | arch/arm/mach-s5p64x0/mach-smdk6440.c | 54 |
2 files changed, 14 insertions, 41 deletions
diff --git a/arch/arm/mach-s5p64x0/Kconfig b/arch/arm/mach-s5p64x0/Kconfig index 017af4c4293c..34e287719f0f 100644 --- a/arch/arm/mach-s5p64x0/Kconfig +++ b/arch/arm/mach-s5p64x0/Kconfig @@ -36,6 +36,7 @@ config MACH_SMDK6440 select S3C_DEV_WDT select S3C64XX_DEV_SPI select SAMSUNG_DEV_ADC + select SAMSUNG_DEV_BACKLIGHT select SAMSUNG_DEV_PWM select SAMSUNG_DEV_TS select S5P64X0_SETUP_I2C1 diff --git a/arch/arm/mach-s5p64x0/mach-smdk6440.c b/arch/arm/mach-s5p64x0/mach-smdk6440.c index 2d559f10fd47..346f8dfa6f35 100644 --- a/arch/arm/mach-s5p64x0/mach-smdk6440.c +++ b/arch/arm/mach-s5p64x0/mach-smdk6440.c @@ -46,6 +46,7 @@ #include <plat/adc.h> #include <plat/ts.h> #include <plat/s5p-time.h> +#include <plat/backlight.h> #define SMDK6440_UCON_DEFAULT (S3C2410_UCON_TXILEVEL | \ S3C2410_UCON_RXILEVEL | \ @@ -91,45 +92,6 @@ static struct s3c2410_uartcfg smdk6440_uartcfgs[] __initdata = { }, }; -static int smdk6440_backlight_init(struct device *dev) -{ - int ret; - - ret = gpio_request(S5P6440_GPF(15), "Backlight"); - if (ret) { - printk(KERN_ERR "failed to request GPF for PWM-OUT1\n"); - return ret; - } - - /* Configure GPIO pin with S5P6440_GPF15_PWM_TOUT1 */ - s3c_gpio_cfgpin(S5P6440_GPF(15), S3C_GPIO_SFN(2)); - - return 0; -} - -static void smdk6440_backlight_exit(struct device *dev) -{ - s3c_gpio_cfgpin(S5P6440_GPF(15), S3C_GPIO_OUTPUT); - gpio_free(S5P6440_GPF(15)); -} - -static struct platform_pwm_backlight_data smdk6440_backlight_data = { - .pwm_id = 1, - .max_brightness = 255, - .dft_brightness = 255, - .pwm_period_ns = 78770, - .init = smdk6440_backlight_init, - .exit = smdk6440_backlight_exit, -}; - -static struct platform_device smdk6440_backlight_device = { - .name = "pwm-backlight", - .dev = { - .parent = &s3c_device_timer[1].dev, - .platform_data = &smdk6440_backlight_data, - }, -}; - static struct platform_device *smdk6440_devices[] __initdata = { &s3c_device_adc, &s3c_device_rtc, @@ -139,8 +101,6 @@ static struct platform_device *smdk6440_devices[] __initdata = { &s3c_device_wdt, &samsung_asoc_dma, &s5p6440_device_iis, - &s3c_device_timer[1], - &smdk6440_backlight_device, }; static struct s3c2410_platform_i2c s5p6440_i2c0_data __initdata = { @@ -175,6 +135,16 @@ static struct s3c2410_ts_mach_info s3c_ts_platform __initdata = { .oversampling_shift = 2, }; +/* LCD Backlight data */ +static struct samsung_bl_gpio_info smdk6440_bl_gpio_info = { + .no = S5P6440_GPF(15), + .func = S3C_GPIO_SFN(2), +}; + +static struct platform_pwm_backlight_data smdk6440_bl_data = { + .pwm_id = 1, +}; + static void __init smdk6440_map_io(void) { s5p_init_io(NULL, 0, S5P64X0_SYS_ID); @@ -194,6 +164,8 @@ static void __init smdk6440_machine_init(void) i2c_register_board_info(1, smdk6440_i2c_devs1, ARRAY_SIZE(smdk6440_i2c_devs1)); + samsung_bl_set(&smdk6440_bl_gpio_info, &smdk6440_bl_data); + platform_add_devices(smdk6440_devices, ARRAY_SIZE(smdk6440_devices)); } |