mirror of https://gitee.com/openkylin/linux.git
56 lines
2.3 KiB
Plaintext
56 lines
2.3 KiB
Plaintext
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. |