[coreboot] Super I/O: Winbond LPC Super I/O WPCN381U

[Peter Stuge]

Jeremy Moles wrote:
> Does anyone have any good documentation I can read to learn how to
> interact with (either in userspace or kernel-level) LPC devices,

LPC is directly accessible to the CPU, so you use outb and inb to
make IO accesses.


> specifically the PC87381 Super I/O device? Perhaps there's some code
> in coreboot demonstrating how GPIO ports are manipulated?

Look at what superiotool does, and/or use isaset from lm-sensors.


//Peter