I should implement a peripheral driver, i think... :-P advantech DVS 300 has a bttv driven gpio, so i think that it's a bttv gpio (so i can try to use bttv_read_gpio and companies)
i have in mind that i should register a device (dev/gpio?) and talk through that for calling bttv provided stuff.
but if I'll find an example (even little) i'm the happiest man in the world :-D (i'm not so sure of what i'm doing.. :-P )
you probably want to read about the new gpio framework (which unfortunately has not yet been merged into mainline)
it comes with a pretty good document going over things -mike
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