What: /sys/class/lcd//lcd_power Date: April 2005 KernelVersion: 2.6.12 Contact: Richard Purdie Description: Control LCD power, values are FB_BLANK_* from fb.h - FB_BLANK_UNBLANK (0) : power on. - FB_BLANK_POWERDOWN (4) : power off What: /sys/class/lcd//contrast Date: April 2005 KernelVersion: 2.6.12 Contact: Richard Purdie Description: Current contrast of this LCD device. Value is between 0 and /sys/class/lcd//max_contrast. What: /sys/class/lcd//max_contrast Date: April 2005 KernelVersion: 2.6.12 Contact: Richard Purdie Description: Maximum contrast for this LCD device.