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MACGPIO(4) Device Drivers Manual (macppc) MACGPIO(4)

macgpio — support for on-board GPIO controllers

macgpio* at macobio?
macgpio* at macgpio?

The macgpio device provides support for GPIO controllers found on many Apple machines.

OpenBSD provides support for the following devices:

dfs(4)
Dynamic Frequency Switching
pgs(4)
programmer's switch
sysbutton(4)
Xserve G4 and G5 front system identifier button

intro(4), macobio(4)

May 25, 2011 openbsd