linux-kernel - Re: Update on Android PM enhancements - CONFIG_HAS

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Date:	Thu, 24 Mar 2011 10:04:55 +0100
From:	Johannes Berg <johannes@...solutions.net>
To:	Arve Hjønnevåg <arve@...roid.com>
Cc:	"Luis R. Rodriguez" <mcgrof@...il.com>,
	linux-kernel@...r.kernel.org, "Rafael J. Wysocki" <rjw@...k.pl>,
	devel@...uxdriverproject.org, Naveen Singh <nsingh@...eros.com>,
	Kalle Valo <kvalo@...rom.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Jouni Malinen <Jouni.Malinen@...eros.com>,
	Vipin Mehta <vmehta@...eros.com>,
	linux-wireless <linux-wireless@...r.kernel.org>
Subject: Re: Update on Android PM enhancements - CONFIG_HAS_EARLYSUSPEND
 and friends

On Wed, 2011-03-23 at 17:47 -0700, Arve Hjønnevåg wrote:

> There is no planned replacement for early suspend, and it will
> probably be dropped form the android kernel at some point. The wifi
> driver use it to enter a lower operating state when the screen is off.
> If you driver does have any other way to put the driver in this state
> you need to add an interface that lets user-space select that state
> directly.

The interface is called "ip link set wlan0 down".

johannes

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