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- 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>.
- What: /sys/class/backlight/<backlight>/ambient_light_level
- Date: May 2011
- KernelVersion: 3.0
- Contact: device-drivers-devel@blackfin.uclinux.org
- Description:
- Get conversion value of the light sensor.
- This value is updated every 80 ms (when the light sensor
- is enabled). Returns integer between 0 (dark) and
- 8000 (max ambient brightness)
- What: /sys/class/backlight/<backlight>/ambient_light_zone
- Date: May 2011
- KernelVersion: 3.0
- Contact: device-drivers-devel@blackfin.uclinux.org
- Description:
- Get/Set current ambient light zone. Reading returns
- integer between 1..5 (1 = daylight, 2 = bright, ..., 5 = dark).
- Writing a value between 1..5 forces the backlight controller
- to enter the corresponding ambient light zone.
- Writing 0 returns to normal/automatic ambient light level
- operation. The ambient light sensing feature on these devices
- is an extension to the API documented in
- Documentation/ABI/stable/sysfs-class-backlight.
- It can be enabled by writing the value stored in
- /sys/class/backlight/<backlight>/max_brightness to
- /sys/class/backlight/<backlight>/brightness.
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