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