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 --- .../ABI/testing/sysfs-class-backlight-adp5520 | 31 ++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-class-backlight-adp5520
diff --git a/Documentation/ABI/testing/sysfs-class-backlight-adp5520 b/Documentation/ABI/testing/sysfs-class-backlight-adp5520 new file mode 100644 index 000000000000..34b6ebafa210 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-class-backlight-adp5520 @@ -0,0 +1,31 @@ +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.