On Wed, 2012-04-18 at 20:35 +1000, Benjamin Herrenschmidt wrote:

On Wed, 2012-04-18 at 09:46 +0200, Andreas Schwab wrote:

quoted

Benjamin Herrenschmidt [off-list ref] writes:

quoted

Note also that KMS doesn't afaik have the power management code that
radeonfb has for those old Mac chipsets, so suspend/resume won't work.

How hard would it be to add it?

The code itself is relatively self contained, but the KMS power
management side is a bit ... messy :-) So the real deal is to figure out
how best to "hook it up" there.

There's some duplication 

Argh... bloody x220 touchpad...

So I was saying, there's also some duplication in the area of dynamic
clocks configuration. Some of this could be an issue as afaik, to work
reliably, the suspend/resume code really wants the stuff to be setup
exactly the way the code in radeon_pm does....

But it's definitely worth trying to port it over.

Cheers,
Ben.