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    SubjectRe: [Linux-fbdev-devel] [PATCH 1/2] fb: add support for foreign endianness
    Valdis.Kletnieks@vt.edu schrieb:
    > On Mon, 18 Feb 2008 08:18:47 +0100, Krzysztof Helt said:
    >> I know two fb drivers which use endianess information (pm2fb and s3c2410fb).
    >> Both resolve endianess at driver level. Actually, both handle it by setting special
    >> bits so the graphics chip itself reorder bytes to transform foreign endianess.
    >> I understand that this patch is for chips which cannot reorder bytes by themselves.
    >
    > Does anybody know of such a chip that's actually available in the wild? Or are
    > we writing drivers for speculative possible chips?
    >

    I had troubles with the Silicon Motion SM501/SM502 endianess on PowerPC PCI vs. LocalBus.
    The chip also has a register to swap endianess, but that seems to only affect some
    LocalBus modes.
    The current fb and X drivers are working, but when it comes to font
    aliasing and hw-acceleration, the problems start to rise again...

    Regards,

    Clemens


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