R128 Dualhead: WORKING!

[Alex Deucher]

On Fri, 12 Nov 2004 16:30:28 +1100, Benjamin Herrenschmidt
<benh at kernel.crashing.org> wrote:
> On Fri, 2004-11-12 at 00:11 -0500, Alex Deucher wrote:
> 
> > Do you know what their pci ids are or if they have two display
> > controllers or not?  Do they support dualhead in MacOS? Also, any
> > ideas on R128SwitchMode()'s weird behavior on crtc2?
> 
> I don't know at this point. I will try to play with your patch on a
> Pismo (M3) as soon as I find some time, and I can ask Paulus to give a
> try to his r128 in his G4 Cube (I _think_ it has 2 outputs).
> 

Thanks!  He'll have to add his card id to the appropriate functions so
dualhead will be enabled.  I'd also like to make sure I didn't break
non-laptop cards since I don't have one to test with.  It should be
ok, but a little testing wouldn't hurt.  Anyone out there with a
desktop r128 chip wanna test?

Hui, I don't suppose you know off hand which r128 cards have two
display controllers? Right now I've only enabled it for M3/M4.

> No idea about the switch mode thing.

I'll track it down eventually.  Just gotta trace through and find out
exactly what gets done differently on server start up ot VT switch
compared to switchmode().

Alex

> 
> Ben.
> 
>