From: Mattia Dongili <malattia@linux.it>
Date: Sat, 19 Feb 2011 02:52:32 +0000 (+0900)
Subject: sony-laptop: implement new backlight control method
X-Git-Tag: v2.6.39-rc1~20^2^2~46
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7751ab8e600f26e10c2ba12a92d48a4852a51da8;p=pandora-kernel.git

sony-laptop: implement new backlight control method

Reasonably recent Vaios have a 0x12f or 0x137 handler that exposes a
fine lid backlight regulation with values ranging from 0 to 255.
The patch is based on findings and code from Javier Achirica
<achirica@gmail.com> and Marco Chiappero <marco@absence.it>

Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
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