mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-05 10:29:37 +00:00
![Aishwarya Pant](/assets/img/avatar_default.png)
Add documentation for sysfs interface of adp5520/adp5501 analog devices backlight driver by reading code and looking through git commit logs. Signed-off-by: Aishwarya Pant <aishpant@gmail.com> Acked-by: Michael Hennerich <michael.hennerich@analog.com> Acked-by: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
31 lines
1.4 KiB
Text
31 lines
1.4 KiB
Text
sysfs interface for analog devices adp5520(01) backlight driver
|
|
---------------------------------------------------------------
|
|
|
|
The backlight brightness control operates at three different levels for the
|
|
adp5520 and adp5501 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>/daylight_max
|
|
What: /sys/class/backlight/<backlight>/office_max
|
|
What: /sys/class/backlight/<backlight>/dark_max
|
|
Date: Sep, 2009
|
|
KernelVersion: v2.6.32
|
|
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>/daylight_dim
|
|
What: /sys/class/backlight/<backlight>/office_dim
|
|
What: /sys/class/backlight/<backlight>/dark_dim
|
|
Date: Sep, 2009
|
|
KernelVersion: v2.6.32
|
|
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.
|