Re: Suspend/Resume support for ati-agp

[Dave Jones]

On Sun, Aug 08, 2004 at 03:39:33AM +0200, Sven-Haegar Koch wrote:

 > while trying to debug a strange resume problem with 2.6.8-rc3-mm1 and
 > software suspend 2 I suspeced ati-agp, and created the following attached
 > patch to add powermanagement support for it.
 > 
 > I don't know if it's the completely right thing to do, I just copied the
 > way via-agp and intel-agp do it - but perhaps you like it and want to send
 > it upstream.

I'll have to dig out the specs for this chipset to double check a
reconfigure is enough (or even needed).  Does this patch definitly make
a difference to you on resume ?

 > ps:
 > this did not fix the strange "weird vertical bars instead of movie in
 > mplayer after resume" I have, but does not do any bad things either ;)

That wouldn't be using AGP anyway. The only difference this could make
would be if you were using 3D applications.

 > +
 > +	/* reconfigure AGP hardware again */
 > +	if (bridge->driver == &ati_generic_bridge)
 > +		return ati_configure();
 > +
 > +	return 0;

If bridge->driver _isn't_ ati_generic_bridge, I don't think we can
ever get here, so you can probably just make this unconditional.

		Dave

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