What: /sys/class/backlight/<backlight>/bl_power Date: April 2005 KernelVersion: 2.6.12 Contact: Richard Purdie <rpurdie@rpsys.net> Description: Control BACKLIGHT power, values are FB_BLANK_* from fb.h - FB_BLANK_UNBLANK (0) : power on. - FB_BLANK_POWERDOWN (4) : power off Users: HAL What: /sys/class/backlight/<backlight>/brightness Date: April 2005 KernelVersion: 2.6.12 Contact: Richard Purdie <rpurdie@rpsys.net> Description: Control the brightness for this <backlight>. Values are between 0 and max_brightness. This file will also show the brightness level stored in the driver, which may not be the actual brightness (see actual_brightness). Users: HAL What: /sys/class/backlight/<backlight>/actual_brightness Date: March 2006 KernelVersion: 2.6.17 Contact: Richard Purdie <rpurdie@rpsys.net> Description: Show the actual brightness by querying the hardware. Users: HAL What: /sys/class/backlight/<backlight>/max_brightness Date: April 2005 KernelVersion: 2.6.12 Contact: Richard Purdie <rpurdie@rpsys.net> Description: Maximum brightness for <backlight>. Users: HAL