tree 654725b0acb42475010569b20a95175807c7b7d2
parent 9659bee43bf010d4c7037fee9c023124f144c6ca
author Gabriele Mazzotta <gabriele.mzt@gmail.com> 1424343509 +0100
committer Darren Hart <dvhart@linux.intel.com> 1428465452 -0700

platform: x86: dell-laptop: Add support for keyboard backlight

This patch adds the support for the configuration of the keyboard
backlight on supported Dell laptops.

With this patch it is possible to set:
* keyboard backlight level
* timeout after which the backlight will be automatically turned off
* input activity triggers (keyboard, touchpad, mouse) that enable the backlight
* ambient light settings

The settings are exposed via /sys/class/leds/dell::kbd_backlight/

The code is based on the newly released documentation by Dell in the
libsmbios project.

Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Gabriele Mazzotta <gabriele.mzt@gmail.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>