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+See also /sys/class/backlight/<backlight>/ambient_light_level and
+/sys/class/backlight/<backlight>/ambient_light_zone.
+
+What: /sys/class/backlight/<backlight>/<ambient light zone>_max
+What: /sys/class/backlight/<backlight>/l1_daylight_max
+What: /sys/class/backlight/<backlight>/l2_bright_max
+What: /sys/class/backlight/<backlight>/l3_office_max
+What: /sys/class/backlight/<backlight>/l4_indoor_max
+What: /sys/class/backlight/<backlight>/l5_dark_max
+Date: May 2011
+KernelVersion: 3.0
+Contact: device-drivers-devel@blackfin.uclinux.org
+Description:
+ Control the maximum brightness for <ambient light zone>
+ on this <backlight>. Values are between 0 and 127. This file
+ will also show the brightness level stored for this
+ <ambient light zone>.
+
+What: /sys/class/backlight/<backlight>/<ambient light zone>_dim
+What: /sys/class/backlight/<backlight>/l2_bright_dim
+What: /sys/class/backlight/<backlight>/l3_office_dim
+What: /sys/class/backlight/<backlight>/l4_indoor_dim
+What: /sys/class/backlight/<backlight>/l5_dark_dim
+Date: May 2011
+KernelVersion: 3.0
+Contact: device-drivers-devel@blackfin.uclinux.org
+Description:
+ Control the dim brightness for <ambient light zone>
+ on this <backlight>. Values are between 0 and 127, typically
+ set to 0. Full off when the backlight is disabled.
+ This file will also show the dim brightness level stored for
+ this <ambient light zone>.