From: Arnaud Patard (Rtp) <arnaud.patard@rtp-net.org>
Date: Thu, 15 Jul 2010 13:06:14 +0000 (+0200)
Subject: i2c-s3c2410: Enable i2c clock only when doing some transfert
X-Git-Tag: v2.6.37-rc1~29^2~1^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d2360b8e845ce0e142e72697a504ee9372421dc3;p=pandora-kernel.git

i2c-s3c2410: Enable i2c clock only when doing some transfert

This patch modify the s3c2410 i2c driver behaviour to enable the
i2c clock only when needed. I'm not sure if this has a big impact
on power usage but at least it's fixing a bug with the uda1380
codec which needs to be hard reset'ed if the i2c clock is enabled
before it's powered on (at least on h1940).

Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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