Subject: Re: power management and idle detection on non-x86
To: Jared D. McNeill <email@example.com>
From: Michael Lorenz <firstname.lastname@example.org>
Date: 05/08/2006 12:31:20
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>> There's a bunch of Linux power management crapola in the video
>> Sleep/wake is "especially" interesting, because some of these video
>> parts have unique initialization considerations. When running Xwsfb
>> non-PC hardware, we might need the underlying wsdisplay to do the
> I have concerns about users of servers other than Xwsfb and how they
> will interact if we start buggering with various display registers
> while they're running. I'm sure we can work around them..
It would only make any sense at all with a non-generic kernel driver
anyway so most x86 are out. Prime examples where this would be useful
are the sparcbooks ( where I wrote most of the relevant driver code
anyway and I'd really like to have this under kernel control ) and
whatever device Garrett s working on ( or rather, anything small and
mobile ). No need to be overly concerned since this can be implemented
on a by-device basis.
> Anyway, wsdisplay already exposes an API for blanking the screen; we
> just need to extend it to support additional types of blanking (dim,
> sleep, suspend, etc).
Yes, backlight levels etc.
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