Re: Changing modes with fbset

["Michel Dänzer" <michel@daenzer.net>]

On Tue, 2004-01-06 at 01:35, Benjamin Herrenschmidt wrote:
> On Tue, 2004-01-06 at 11:28, Otto Solares wrote:
> > 
> > Hi James! now that you are back again, i would like to suggest
> > a modification to fbdev core, i am having problems guessing
> > which card is attached to a fb device.  I need this info to
> > solve the 'more than 1 card' situation.  This could be easily
> > fixed if the fbdev api provides the busid of the card, like
> > "pci:0000:01:0.0".  That would solve a lot of things in the
> > HAL detection routines.  Maybe that could be exported via
> > sysfs but i have been waiting for sysfs for a while and don't
> > see it coming to a reality.  Maybe an ioctl is enough.
> 
> Right, we need that and some way to know which heads are "coupled" for
> dual head drivers. One of the reasons I haven't done dual head support
> in radeonfb yet is that to get it working properly with X, I need to
> update X too, and add a way for X to know which /dev/fb's are actually
> "together" as 2 heads of the same card.
> 
> Then, we probably want some way to also enable mirroring instead of
> dual head...

Crazy idea: What would break if it defaulted to mirroring? :) You could
achieve true multihead via panning or something...


-- 
Earthling Michel Dänzer      |     Debian (powerpc), X and DRI developer
Software libre enthusiast    |   http://svcs.affero.net/rm.php?r=daenzer



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