# Re: still ..Confused about atyfb and M1

- From: Geert Uytterhoeven \<geert@linux-m68k.org\>
- Date: 2004-02-04 15:43:32 
- List: linux-fbdev
- Page: https://ratatoskr.run/linux-fbdev/2004/02/13452305
- Thread: https://ratatoskr.run/linux-fbdev/2004/01/13452225/t.md

```text
On Wed, 4 Feb 2004, Richard Smith wrote:
> > On Tue, 3 Feb 2004, Richard Smith wrote:
> >
> >>new untested hardware booting a half-ass videobios running an unknown
> >>driver.  Gee... wonder why it dosen't work? *grin*
>
>  >Geert Uytterhoeven wrote:
>
> > Indeed, atyfb needs BIOS (or OpenFirmware) initialization. It has
> >
> How much?  Are things like the ammount and type of RAM autodetected or
> just read from registers that the BIOS is supposed to set?

Atyfb reads them from the registers.

> > My Vaio Z600TEK (Z505 in US/JP) has a M1. It works with atyfb in recent 2.4,
> > but it took Daniël Mantione quite a bit of work to make it work on this
> > particular machine...
>
> What device ID is your M1?

1002:4c4d

> Any idea what he had to do?  Most of DM's code seems to deal with

IIRC, programming an extra shadow register.

> makeing it work properly with a LCD.  Right now I just have a CRT hooked
> up.  LCD will comes later.
>
> > Let's say atyfb in 2.4 works on most M1s these days.
>
> So which one should I work with? 2.4 or 2.6 with fbdiff?

I think 2.4 is the safest. I don't know whether James' tree already contains
all Mobility support from 2.4.

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds


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