Re: [Linux-fbdev-devel] [RFC][PATCH][FBDEV]: Setting fbcon's

Antonino Daplas (adaplas@pol.net)
11 Jan 2003 13:10:58 +0800


On Sat, 2003-01-11 at 02:18, James Simmons wrote:
>
> > Here's an improved GTF implementation. I was a bit delayed because I
> > was trying to find a way to do square roots without using floating
> > point. The diff is against linux-2.5.54 + your latest fbdev.diff.
>
> Applied.
>
> > but is more or less usable. Tested with i810fb and rivafb. (For rivafb,
> > I have to use a hacked version. The latest one does not work for the
> > riva128).
>
> What hack did you do? That is based on the latest riva driver from 2.4.2X.
>
I just combined the old riva_hw.c in linux-2.5.52 with the new fbdev.c
code. Not too sure why, either the newest riva_hw.c has dropped support
for old hardware, or we are using it incorrectly. If I'm to guess, the
new riva_hw.c did not come from linux-2.4.20, but probably from Xfree86?

> > BTW, I downloaded the source code of read-edid, and it seems that the
> > following monitor limits are parsable from the EDID block: HorizSync,
> > VertRefresh, DotClock, and GTF capability. We may change info->monspecs
> > to match that. Also, the EDID contains a list of supported modes, but
> > there's only 4 of them(?).
>
> I figured monspec would have to be improved. I'm looking into the EDID
> info right now. I'm also looking at read-edid. Next I need to figure out
> how to use i2c to get this info.
>
Good luck :-)

Tony

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