Andriy Gapon wrote:
Do we have any drivers for special functions provided by ISA/LPC Super
I/Os. I mean many of them have watchdog capabilities, GPIO, etc. I do
not meant fdc, lpt, sio/uart and hwm which are 9or can be) handled as
the devices of their own.
I have some quite hairy code for Winbond W83977EF that provides watchdog
and led interfaces (the latter is for power led).
I'd like to understand what is the best/canonical way to access
superio's ports, enter configuration mode, etc.
Also, it would be interesting to see how various configurations/wirings
of the same superio could be handled.
I looked at some Linux drivers but their coding ways are quite different
and they typically handle only one wiring type (probably the one that
was found on author's motherboard).
I also would be interested in a general discussion on this topic (superios).
BTW, do we have some interface to userland or GPIO? Something similar to
led(4), but more generic (and supporting 'I' as well 'O').
There's been some discussion amongst embedded folks but nothing yet. I
noticed openbsd commit something recently but don't know if we can reuse
anything they've done.
Sam
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