FRAMEBUFFER policy
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.
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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.
Quoted 9 lines · Ian Molton
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
Quoted 4 lines · On Mon, 16 Jun 2003 14:12:45 +0200 (MEST) Geert Uytterhoeven…
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.
Signature · 4 lines
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.