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Hello,

> > I'd suggest this - look at macppc/dev/apm.c and fill in the
> > APM_IOC_STANDBY and APM_IOC_SUSPEND cases in apmioctl(), look what
> > i386 does there - basically it runs the powerhooks, then tells the
> > APM BIOS

> Yes, that looks more do-able.... I was looking at the ACPI code.....
> its a very complicated set of APIs.

Yeah, I'm not really sure if not having ACPI is a drawback or a benefit
;)
Anyway, the Darwin source code is full of examples how to power down
various subsystems, there's a whole bunch of flag registers in uni_n for
just that.=20

> > to go into standby or suspend. Lots of macppc-specific drivers don't
> > support powerhooks yet, that's where the real work lurks.
> > With the ioctl()s in place you can just use zzz or apm to call them.

> Great, thanks! I could at least report what I see, and it could be a
> start.

That's the plan ;)
This way you can at least play with the API, run powerhooks at will and
so on.

We'll have to do a lot of things by hand which the APM BIOS does
automagically on i386, like figuring out when the machine has been idle
long enough to enter standby and so on. Since I have more or less the
same problem with the SPARCbook we should probably talk to the ACPI
folks first and make sure nobody duplicates anything needlessly.

Right now I'm slowly adding powerhooks to some SCSI and SBus drivers and
pondering how exactly to emulate a suspend. Too bad we don't have
generic suspend-to-disk.

have fun
Michael

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