Date: Mon, 14 Jan 2008 16:29:16 +0000 From: Rui Paulo <rpaulo@fnop.net> To: John Baldwin <jhb@FreeBSD.org> Cc: Perforce Change Reviews <perforce@freebsd.org> Subject: Re: PERFORCE change 132974 for review Message-ID: <863at0jrqb.wl%rpaulo@fnop.net> In-Reply-To: <200801101655.m0AGtZqn043424@repoman.freebsd.org> References: <200801101655.m0AGtZqn043424@repoman.freebsd.org>
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At Thu, 10 Jan 2008 16:55:35 GMT, John Baldwin wrote: > > http://perforce.freebsd.org/chv.cgi?CH=132974 > > Change 132974 by jhb@jhb_zion on 2008/01/10 16:54:55 > > Update. > > Affected files ... > > .. //depot/projects/power/notes#12 edit > > Differences ... > > ==== //depot/projects/power/notes#12 (text+ko) ==== > > @@ -69,3 +69,15 @@ > The second stage will be to make the powering off of devices more automated. > This is still in early design stage. It may involve a powerd, it may > involve intelligence in the kernel. > + > +Other stuff: > + > +- Make the DPMS support in acpi_video a separate driver that attaches to > + vgapci0 > +- Automated idle device power management > + - Basic idea is that when a device is idle for a specified amount of time, > + it should power down into D1 or D2. For example, NICs can power down > + when they have no link until they get link. Audio controllers can power > + down when they aren't open, etc. > + - Want to avoid having lots of scaffolding in device drivers. So we need > + to come up with some models for some frameworks. Cool, thanks for working on this. I had this in my mind since forever.. -- Rui Paulo
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