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Hello,

I've been working to get some sort of power management into my 
sparcbook for a while now and apart from powerhooks in many device 
drivers there are a few other things missing.
First, we need a way to know when the machine is idle so we can dim 
backlight at some point, or fall asleep. What I'd like to have is a 
bunch of 'idle timers' - just write the current timestamp into a more 
or less global variable whenever the mouse is moved, some key is 
pressed etc., probably keep different counters for different devices. 
With this we could detect 'idleness' by just comparing these variables 
to current time, if enough of them differ by some predefined value we 
can take actions. On PCs this is probably handled by the APM BIOS but 
on macppc or sparc we don't have anything like that so we need our own.
So, before I'm wasting my time inventing the wheel the 5th time - do we 
have something like this somewhere in the kernel? Should it be 
integrated with powerd? What about powerd vs. apmd? Their scopes seem 
to overlap quite a bit.

have fun
Michael
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