sysfs interface for analog devices adp8860 backlight driver ----------------------------------------------------------- The backlight brightness control operates at three different levels for the adp8860, adp8861 and adp8863 devices: daylight (level 1), office (level 2) and dark (level 3). By default the brightness operates at the daylight brightness level. What: /sys/class/backlight//ambient_light_level Date: Apr, 2010 KernelVersion: v2.6.35 Contact: Michael Hennerich Description: (RO) 13-bit conversion value for the first light sensor—high byte (Bit 12 to Bit 8). The value is updated every 80 ms (when the light sensor is enabled). What: /sys/class/backlight//ambient_light_zone Date: Apr, 2010 KernelVersion: v2.6.35 Contact: Michael Hennerich Description: (RW) Read or write the specific level at which the backlight operates. Value "0" enables automatic ambient light sensing, and values "1", "2" or "3" set the control to daylight, office or dark respectively. What: /sys/class/backlight//l1_daylight_max What: /sys/class/backlight//l2_office_max What: /sys/class/backlight//l3_dark_max Date: Apr, 2010 KernelVersion: v2.6.35 Contact: Michael Hennerich Description: (RW) Maximum current setting for the backlight when brightness is at one of the three levels (daylight, office or dark). This is an input code between 0 and 127, which is transformed to a value between 0 mA and 30 mA using linear or non-linear algorithms. What: /sys/class/backlight//l1_daylight_dim What: /sys/class/backlight//l2_office_dim What: /sys/class/backlight//l3_dark_dim Date: Apr, 2010 KernelVersion: v2.6.35 Contact: Michael Hennerich Description: (RW) Dim current setting for the backlight when brightness is at one of the three levels (daylight, office or dark). This is an input code between 0 and 127, which is transformed to a value between 0 mA and 30 mA using linear or non-linear algorithms.