From: Grazvydas Ignotas <notasas@gmail.com>
Date: Tue, 20 Oct 2009 13:12:52 +0000 (+0300)
Subject: backlight: fix register writes
X-Git-Tag: Release-2010-05/1~2^2~70
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=33c5581e95e7d70e3bf72917b18e716a0d13246d;p=pandora-kernel.git

backlight: fix register writes

Use read-modify-write procedure to avoid trashing other bits.
Also use some delays to avoid hiting 1-wire mode in LED driver chip.
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