linux-kernel - Re: [linux-pm] [PATCH 1/8] PM: Add suspend block api.

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Date:	Fri, 07 May 2010 10:20:37 -0700
From:	Daniel Walker <dwalker@...o99.com>
To:	Tony Lindgren <tony@...mide.com>
Cc:	Matthew Garrett <mjg@...hat.com>,
	Brian Swetland <swetland@...gle.com>,
	Alan Stern <stern@...land.harvard.edu>,
	mark gross <mgross@...ux.intel.com>, markgross@...gnar.org,
	Len Brown <len.brown@...el.com>, linux-doc@...r.kernel.org,
	Kernel development list <linux-kernel@...r.kernel.org>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Oleg Nesterov <oleg@...hat.com>, Tejun Heo <tj@...nel.org>,
	Linux-pm mailing list <linux-pm@...ts.linux-foundation.org>,
	Wu Fengguang <fengguang.wu@...el.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [linux-pm] [PATCH 1/8] PM: Add suspend block api.

On Thu, 2010-05-06 at 19:00 -0700, Tony Lindgren wrote:

> Oh some SoC devices like omap hit retention or off modes in the idle loop.
> That brings down the idle consumption of a running system to minimal
> levels. It's basically the same as suspending the device in every idle loop.
> 
> The system wakes up every few seconds or so, but that already provides
> battery life of over ten days or so on an idle system. Of course the
> wakeup latencies are in milliseconds then.

MSM doesn't have those power states unfortunately .. Your kind of
suggesting what I was suggesting in that we should suspend in idle. Your
hardware can do it easier tho since your have power states that are
equal to suspend.

Daniel

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