linux-kernel - Re: sony-laptop platform driver

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Message-ID: <20090911215958.GA30989@srcf.ucam.org>
Date:	Fri, 11 Sep 2009 22:59:58 +0100
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	tsuraan <tsuraan@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: sony-laptop platform driver

On Fri, Sep 11, 2009 at 10:12:32AM -0500, tsuraan wrote:
> The current mainline sony-laptop platform driver is missing some
> crucial features from Eva's driver
> (http://www.basyskom.org/~eva/log_installation_vaio_z21vnx.html),
> especially the ability to shut off the embedded nvidia card in laptops
> with hybrid graphics.  Simply disabling the nvidia card using Eva's
> driver brings my laptop's power consumption from 18W to 12W, which is
> a pretty huge leap in battery life.

The interface used for that isn't sony-specific, so sony-laptop is the 
wrong place to put it. I've just submitted a patch to the nouveau 
developers.

-- 
Matthew Garrett | mjg59@...f.ucam.org
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