diff options
Diffstat (limited to 'arch/arm/mach-s5p64x0/mach-smdk6440.c')
| -rw-r--r-- | arch/arm/mach-s5p64x0/mach-smdk6440.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/arch/arm/mach-s5p64x0/mach-smdk6440.c b/arch/arm/mach-s5p64x0/mach-smdk6440.c index e5beb84e239..366dca4ec79 100644 --- a/arch/arm/mach-s5p64x0/mach-smdk6440.c +++ b/arch/arm/mach-s5p64x0/mach-smdk6440.c @@ -22,6 +22,7 @@ #include <linux/module.h> #include <linux/clk.h> #include <linux/gpio.h> +#include <linux/pwm_backlight.h> #include <asm/mach/arch.h> #include <asm/mach/map.h> @@ -32,6 +33,7 @@ #include <mach/map.h> #include <mach/regs-clock.h> #include <mach/i2c.h> +#include <mach/regs-gpio.h> #include <plat/regs-serial.h> #include <plat/gpio-cfg.h> @@ -88,6 +90,45 @@ 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, @@ -97,6 +138,8 @@ 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 = { |