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Subject: Re: Power Management framework proposal
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: david@lang.hm
Cc: Arjan van de Ven <arjan@infradead.org>,
       LKML <linux-kernel@vger.kernel.org>,
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Date: Wed, 25 Jul 2007 07:38:58 +1000
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On Tue, 2007-07-24 at 13:14 -0700, david@lang.hm wrote:
> > I think we need a set of constraints that trickle down the power
> tree
> > and limit what a given driver can do locally.
> 
> what sort of contraints are you thinking of?

A parent power state defines what states children can be in. For
example. A way to express those dependencies would be nice. Or
alternatiely, the power state of all the children defines the power
state a parent can go in automatically.

Ben.