From mboxrd@z Thu Jan  1 00:00:00 1970
From: Dave Airlie <airlied@gmail.com>
Subject: nouveau optimus dynamic power off
Date: Mon, 29 Jul 2013 16:06:55 +1000
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I finally got back to debugging the HDMI audio interactions that
stopped me last time,

This adds switcheroo + nouveau + hda_intel support for turning
off the secondary GPU in optimus laptops, saving a lot of power.

The GPU should come back on for things like lspci on the devices
or for DRI_PRIME= or X starting up.

Signed-off-by: Dave Airlie <airlied@redhat.com>