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| author | Banajit Goswami <banajit.g@samsung.com> | 2011-07-20 18:45:22 +0400 |
|---|---|---|
| committer | Kukjin Kim <kgene.kim@samsung.com> | 2011-07-20 21:10:31 +0400 |
| commit | 84ca326c7c77926ccb501eaa89f50d9230a9543b (patch) | |
| tree | f3844f93f6cceb88bba70cacfb9b110dec553956 /arch/arm/mach-s5pv210 | |
| parent | fef469f7c28268a9bfa8b4e440fbd8055ccc68c0 (diff) | |
| download | linux-84ca326c7c77926ccb501eaa89f50d9230a9543b.tar.xz | |
ARM: S5PV210: Add PWM backlight support on SMDKV210
This patch adds support for LCD backlight using PWM timer for
Samsung SMDKV210 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-s5pv210')
| -rw-r--r-- | arch/arm/mach-s5pv210/Kconfig | 1 | ||||
| -rw-r--r-- | arch/arm/mach-s5pv210/mach-smdkv210.c | 54 |
2 files changed, 14 insertions, 41 deletions
diff --git a/arch/arm/mach-s5pv210/Kconfig b/arch/arm/mach-s5pv210/Kconfig index 37b5a97594a5..79bb3a0314ef 100644 --- a/arch/arm/mach-s5pv210/Kconfig +++ b/arch/arm/mach-s5pv210/Kconfig @@ -134,6 +134,7 @@ config MACH_SMDKV210 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-s5pv210/mach-smdkv210.c b/arch/arm/mach-s5pv210/mach-smdkv210.c index c6a9e86c2d5c..c4d9b7dd098e 100644 --- a/arch/arm/mach-s5pv210/mach-smdkv210.c +++ b/arch/arm/mach-s5pv210/mach-smdkv210.c @@ -45,6 +45,7 @@ #include <plat/pm.h> #include <plat/fb.h> #include <plat/s5p-time.h> +#include <plat/backlight.h> /* Following are default values for UCON, ULCON and UFCON UART registers */ #define SMDKV210_UCON_DEFAULT (S3C2410_UCON_TXILEVEL | \ @@ -210,45 +211,6 @@ static struct s3c_fb_platdata smdkv210_lcd0_pdata __initdata = { .setup_gpio = s5pv210_fb_gpio_setup_24bpp, }; -static int smdkv210_backlight_init(struct device *dev) -{ - int ret; - - ret = gpio_request(S5PV210_GPD0(3), "Backlight"); - if (ret) { - printk(KERN_ERR "failed to request GPD for PWM-OUT 3\n"); - return ret; - } - - /* Configure GPIO pin with S5PV210_GPD_0_3_TOUT_3 */ - s3c_gpio_cfgpin(S5PV210_GPD0(3), S3C_GPIO_SFN(2)); - - return 0; -} - -static void smdkv210_backlight_exit(struct device *dev) -{ - s3c_gpio_cfgpin(S5PV210_GPD0(3), S3C_GPIO_OUTPUT); - gpio_free(S5PV210_GPD0(3)); -} - -static struct platform_pwm_backlight_data smdkv210_backlight_data = { - .pwm_id = 3, - .max_brightness = 255, - .dft_brightness = 255, - .pwm_period_ns = 78770, - .init = smdkv210_backlight_init, - .exit = smdkv210_backlight_exit, -}; - -static struct platform_device smdkv210_backlight_device = { - .name = "pwm-backlight", - .dev = { - .parent = &s3c_device_timer[3].dev, - .platform_data = &smdkv210_backlight_data, - }, -}; - static struct platform_device *smdkv210_devices[] __initdata = { &s3c_device_adc, &s3c_device_cfcon, @@ -270,8 +232,6 @@ static struct platform_device *smdkv210_devices[] __initdata = { &samsung_device_keypad, &smdkv210_dm9000, &smdkv210_lcd_lte480wv, - &s3c_device_timer[3], - &smdkv210_backlight_device, }; static void __init smdkv210_dm9000_init(void) @@ -310,6 +270,16 @@ static struct s3c2410_ts_mach_info s3c_ts_platform __initdata = { .oversampling_shift = 2, }; +/* LCD Backlight data */ +static struct samsung_bl_gpio_info smdkv210_bl_gpio_info = { + .no = S5PV210_GPD0(3), + .func = S3C_GPIO_SFN(2), +}; + +static struct platform_pwm_backlight_data smdkv210_bl_data = { + .pwm_id = 3, +}; + static void __init smdkv210_map_io(void) { s5p_init_io(NULL, 0, S5P_VA_CHIPID); @@ -341,6 +311,8 @@ static void __init smdkv210_machine_init(void) s3c_fb_set_platdata(&smdkv210_lcd0_pdata); + samsung_bl_set(&smdkv210_bl_gpio_info, &smdkv210_bl_data); + platform_add_devices(smdkv210_devices, ARRAY_SIZE(smdkv210_devices)); } |