В сообщении от 23 июля 2010 12:02:49 автор Vasily Khoruzhick написал:
> В сообщении от 15 июля 2010 16:06:14 автор Arnaud Patard написал:
> > 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>
> 
> Fixes same bug with uda1380 on rx1950 aswell.
> 
> Tested-by: Vasily Khoruzhick <anarsoul@gmail.com>

This patch has problem with suspend/resume, clock needs to be enabled on i2c 
re-init. Here's fixed version of patch in attachment.