55 lines
2.1 KiB
Plaintext
55 lines
2.1 KiB
Plaintext
|
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/<backlight>/ambient_light_level
|
||
|
|
Date: Apr, 2010
|
||
|
|
KernelVersion: v2.6.35
|
||
|
|
Contact: Michael Hennerich <michael.hennerich@analog.com>
|
||
|
|
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/<backlight>/ambient_light_zone
|
||
|
|
Date: Apr, 2010
|
||
|
|
KernelVersion: v2.6.35
|
||
|
|
Contact: Michael Hennerich <michael.hennerich@analog.com>
|
||
|
|
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/<backlight>/l1_daylight_max
|
||
|
|
What: /sys/class/backlight/<backlight>/l2_office_max
|
||
|
|
What: /sys/class/backlight/<backlight>/l3_dark_max
|
||
|
|
Date: Apr, 2010
|
||
|
|
KernelVersion: v2.6.35
|
||
|
|
Contact: Michael Hennerich <michael.hennerich@analog.com>
|
||
|
|
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/<backlight>/l1_daylight_dim
|
||
|
|
What: /sys/class/backlight/<backlight>/l2_office_dim
|
||
|
|
What: /sys/class/backlight/<backlight>/l3_dark_dim
|
||
|
|
Date: Apr, 2010
|
||
|
|
KernelVersion: v2.6.35
|
||
|
|
Contact: Michael Hennerich <michael.hennerich@analog.com>
|
||
|
|
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.
|