re: viapcib and viaenv drivers

> How to write driver(s) for the device which:
> 1) has multipurpose registers to control different devices.
> 2) can connect to pci or pcib.
> 3) some controlled devices overlap and are backwards compatible between
> chipsets (smbus, iic, power management, gpio, etc)
> 4) some can have chipset specific devices to control (like hw monitor
> on VT8231)
> 5) newer chipsets may have more devices to control than older.
> 6) some controls may need to be exposed over sysctl.

maybe have a look at how x86 cpufeaturebus works.


.mrg.