diff options
Diffstat (limited to 'arch/arm/mach-s5p64x0/mach-smdk6450.c')
| -rw-r--r-- | arch/arm/mach-s5p64x0/mach-smdk6450.c | 47 |
1 files changed, 46 insertions, 1 deletions
diff --git a/arch/arm/mach-s5p64x0/mach-smdk6450.c b/arch/arm/mach-s5p64x0/mach-smdk6450.c index 3a20de0a926..d19c4690ee9 100644 --- a/arch/arm/mach-s5p64x0/mach-smdk6450.c +++ b/arch/arm/mach-s5p64x0/mach-smdk6450.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> @@ -43,6 +45,7 @@ #include <plat/pll.h> #include <plat/adc.h> #include <plat/ts.h> +#include <plat/s5p-time.h> #define SMDK6450_UCON_DEFAULT (S3C2410_UCON_TXILEVEL | \ S3C2410_UCON_RXILEVEL | \ @@ -106,6 +109,45 @@ static struct s3c2410_uartcfg smdk6450_uartcfgs[] __initdata = { #endif }; +static int smdk6450_backlight_init(struct device *dev) +{ + int ret; + + ret = gpio_request(S5P6450_GPF(15), "Backlight"); + if (ret) { + printk(KERN_ERR "failed to request GPF for PWM-OUT1\n"); + return ret; + } + + /* Configure GPIO pin with S5P6450_GPF15_PWM_TOUT1 */ + s3c_gpio_cfgpin(S5P6450_GPF(15), S3C_GPIO_SFN(2)); + + return 0; +} + +static void smdk6450_backlight_exit(struct device *dev) +{ + s3c_gpio_cfgpin(S5P6450_GPF(15), S3C_GPIO_OUTPUT); + gpio_free(S5P6450_GPF(15)); +} + +static struct platform_pwm_backlight_data smdk6450_backlight_data = { + .pwm_id = 1, + .max_brightness = 255, + .dft_brightness = 255, + .pwm_period_ns = 78770, + .init = smdk6450_backlight_init, + .exit = smdk6450_backlight_exit, +}; + +static struct platform_device smdk6450_backlight_device = { + .name = "pwm-backlight", + .dev = { + .parent = &s3c_device_timer[1].dev, + .platform_data = &smdk6450_backlight_data, + }, +}; + static struct platform_device *smdk6450_devices[] __initdata = { &s3c_device_adc, &s3c_device_rtc, @@ -115,6 +157,8 @@ static struct platform_device *smdk6450_devices[] __initdata = { &s3c_device_wdt, &samsung_asoc_dma, &s5p6450_device_iis0, + &s3c_device_timer[1], + &smdk6450_backlight_device, /* s5p6450_device_spi0 will be added */ }; @@ -155,6 +199,7 @@ static void __init smdk6450_map_io(void) s5p_init_io(NULL, 0, S5P64X0_SYS_ID); s3c24xx_init_clocks(19200000); s3c24xx_init_uarts(smdk6450_uartcfgs, ARRAY_SIZE(smdk6450_uartcfgs)); + s5p_set_timer_source(S5P_PWM3, S5P_PWM4); } static void __init smdk6450_machine_init(void) @@ -178,5 +223,5 @@ MACHINE_START(SMDK6450, "SMDK6450") .init_irq = s5p6450_init_irq, .map_io = smdk6450_map_io, .init_machine = smdk6450_machine_init, - .timer = &s3c24xx_timer, + .timer = &s5p_timer, MACHINE_END |