From 6cff8d60aa0aba5583ecda09984dbcb2f24cc28d Mon Sep 17 00:00:00 2001
From: Gabriele Mazzotta <gabriele.mzt@gmail.com>
Date: Thu, 19 Feb 2015 11:58:29 +0100
Subject: [PATCH] platform: x86: dell-laptop: Add support for keyboard
 backlight
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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>
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