samsung_bl_set 19 arch/arm/mach-s3c64xx/backlight.h extern void __init samsung_bl_set(struct samsung_bl_gpio_info *gpio_info, samsung_bl_set 697 arch/arm/mach-s3c64xx/mach-smdk6410.c samsung_bl_set(&smdk6410_bl_gpio_info, &smdk6410_bl_data);