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1sysfs interface for Texas Instruments lm3639 backlight + flash led driver chip2------------------------------------------------------------------------------3 4What: /sys/class/backlight/<backlight>/bled_mode5Date: Oct, 20126KernelVersion: v3.107Contact: dri-devel@lists.freedesktop.org8Description:9 (WO) Write to the backlight mapping mode. The backlight current10 can be mapped for either exponential (value "0") or linear11 mapping modes (default).12