Re: radeon-pre-2

[Vladimir Dergachev]

On Sat, 11 Sep 2004, Alan Cox wrote:

> On Sad, 2004-09-11 at 18:10, Vladimir Dergachev wrote:
> > This is a good point - if we don't need DMA or 3d acceleration we can
> > reduce memory footprint. This would seem that current DRM driver would
> > need to be dependent on whatever driver contains the mode setting code.
> >
> > What do you think ?
>
> Jon wants to get mode setting into a seperate piece of functionality -
> preferably in user space for many cards. I'd dearly love to see hotplug
> handing all but some "emergency" pre-computed mode settings.

I think there is a misunderstanding.

My view was that PLL setting (and setting of a fixed mode) would be done 
in DRM driver. This way it would be able to restore previous settings 
after a lockup or respond to FB request to change modes.

However the decision of which mode to set, as well as where the 
framebuffer is located is done in user-space. (So that subtleties of
layout of offscreen memory are not in the kernel).

Jon - did I understand you correctly ?

                            best

                              Vladimir Dergachev
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/