1
What: /sys/class/backlight/<backlight>/<ambient light zone>_max
2
What: /sys/class/backlight/<backlight>/l1_daylight_max
3
What: /sys/class/backlight/<backlight>/l2_bright_max
4
What: /sys/class/backlight/<backlight>/l3_office_max
5
What: /sys/class/backlight/<backlight>/l4_indoor_max
6
What: /sys/class/backlight/<backlight>/l5_dark_max
9
Contact: device-drivers-devel@blackfin.uclinux.org
11
Control the maximum brightness for <ambient light zone>
12
on this <backlight>. Values are between 0 and 127. This file
13
will also show the brightness level stored for this
16
What: /sys/class/backlight/<backlight>/<ambient light zone>_dim
17
What: /sys/class/backlight/<backlight>/l2_bright_dim
18
What: /sys/class/backlight/<backlight>/l3_office_dim
19
What: /sys/class/backlight/<backlight>/l4_indoor_dim
20
What: /sys/class/backlight/<backlight>/l5_dark_dim
23
Contact: device-drivers-devel@blackfin.uclinux.org
25
Control the dim brightness for <ambient light zone>
26
on this <backlight>. Values are between 0 and 127, typically
27
set to 0. Full off when the backlight is disabled.
28
This file will also show the dim brightness level stored for
29
this <ambient light zone>.
31
What: /sys/class/backlight/<backlight>/ambient_light_level
34
Contact: device-drivers-devel@blackfin.uclinux.org
36
Get conversion value of the light sensor.
37
This value is updated every 80 ms (when the light sensor
38
is enabled). Returns integer between 0 (dark) and
39
8000 (max ambient brightness)
41
What: /sys/class/backlight/<backlight>/ambient_light_zone
44
Contact: device-drivers-devel@blackfin.uclinux.org
46
Get/Set current ambient light zone. Reading returns
47
integer between 1..5 (1 = daylight, 2 = bright, ..., 5 = dark).
48
Writing a value between 1..5 forces the backlight controller
49
to enter the corresponding ambient light zone.
50
Writing 0 returns to normal/automatic ambient light level
51
operation. The ambient light sensing feature on these devices
52
is an extension to the API documented in
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Documentation/ABI/stable/sysfs-class-backlight.
54
It can be enabled by writing the value stored in
55
/sys/class/backlight/<backlight>/max_brightness to
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/sys/class/backlight/<backlight>/brightness.
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