From: Jan-Bernd Themann <redacted>
Date: Mon, 27 Aug 2007 11:47:01 +0200

So the question is simply: Do we want drivers that need (benefit
from) a timer based polling support to implement their own timers
each, or should there be a generic support?

I'm trying to figure out how an hrtimer implementation would
even work.

Would you start the timer from the chip interrupt handler?  If so,
that's taking two steps backwards as you've already taken all of the
overhead of running the interrupt handler.