Hi.
What is the policy as regards linux framebuffer drivers when presented
with a mode they cannot handle.
eg, suppose a driver can only handle even numbers of pixels and a
request is made for a mode with 639 pixels - should it allocate a 640
pixel wide mode?
or should it extend the height of a mode to allow hardware scrolling in
multiples of the font height?
Thanks.
--
Spyros lair: http://www.mnementh.co.uk/ |||| Maintainer: arm26 linux
Do not meddle in the affairs of Dragons, for you are tasty and good with
ketchup.
On Mon, 16 Jun 2003, Ian Molton wrote:
> What is the policy as regards linux framebuffer drivers when presented
> with a mode they cannot handle.
>
> eg, suppose a driver can only handle even numbers of pixels and a
> request is made for a mode with 639 pixels - should it allocate a 640
> pixel wide mode?
>
> or should it extend the height of a mode to allow hardware scrolling in
> multiples of the font height?
If you pass a mode that cannot be handled, the driver must try to round up some
values to make it work. If that's not possible, an error is returned.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- [email protected]
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
On Mon, 16 Jun 2003 14:12:45 +0200 (MEST)
Geert Uytterhoeven <[email protected]> wrote:
>
> If you pass a mode that cannot be handled, the driver must try to
> round up some values to make it work. If that's not possible, an error
> is returned.
Great, thanks.
--
Spyros lair: http://www.mnementh.co.uk/ |||| Maintainer: arm26 linux
Do not meddle in the affairs of Dragons, for you are tasty and good with
ketchup.