Scaling registers on r128

Benjamin Herrenschmidt benh at
Tue Nov 13 00:16:50 EST 2001

>This patch to aty128fb is experimental, and intended for the brave.
>The attached patch turns on the panel scaling registers of the R128.
>I've run this on my iBook2, and I've been able to display 640x480 and
>800x600 modes on the panel successfully.
>The panel sizes are currently hardwired on the iBook. This code will
>benefit greatly from a reliable means to find the panel size.
>This has revealed problems in the X server: if the XF86Config-4
>specifies 800x600 and the current console is in 1024x768, the display is
>broken. This looks like a generic problem in fbdevhw based Xservers, as
>I saw something similar on 69030.

great. I'm working on some way to probe the panel type on those
machines as it doesn't seem to follow any standard. Once don


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