From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752256AbWAEWzk (ORCPT ); Thu, 5 Jan 2006 17:55:40 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752253AbWAEWzj (ORCPT ); Thu, 5 Jan 2006 17:55:39 -0500 Received: from motgate8.mot.com ([129.188.136.8]:31723 "EHLO motgate8.mot.com") by vger.kernel.org with ESMTP id S1751216AbWAEWzj convert rfc822-to-8bit (ORCPT ); Thu, 5 Jan 2006 17:55:39 -0500 X-MimeOLE: Produced By Microsoft Exchange V6.5.7226.0 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-2" Content-Transfer-Encoding: 8BIT Subject: RE: [linux-pm] [patch] pm: fix runtime powermanagement's /sys interface Date: Thu, 5 Jan 2006 17:55:33 -0500 Message-ID: X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [linux-pm] [patch] pm: fix runtime powermanagement's /sys interface Thread-Index: AcYSScI269FurwA4THmvIn9HWVNHbAAAIF4g From: "Preece Scott-PREECE" To: "Pavel Machek" Cc: "Alan Stern" , , , Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org I shouldn't oversimplify the power management in a cell phone. When I said we turned whole devices on/off, I was referring only to what the system-level PM (which uses suspend/resume) does. There's a fair amount of subsystem-specific power management outside the Linux suspend/resume framework. Some of it might be handled in the framework, if the framework were more capable. scott -----Original Message----- From: Pavel Machek [mailto:pavel@ucw.cz] Sent: Thursday, January 05, 2006 4:46 PM To: Preece Scott-PREECE Cc: Alan Stern; akpm@osdl.org; linux-pm@lists.osdl.org; linux-kernel@vger.kernel.org Subject: Re: [linux-pm] [patch] pm: fix runtime powermanagement's /sys interface On Čt 05-01-06 17:21:38, Preece Scott-PREECE wrote: > We do have multiple system-level low-power modes. I believe today they > differ in turning whole devices on or off, but there are some of those > devices that could be put in reduced-function/lowered-speed modes if > we were ready to use a finer-grained distinction. I think we were talking multiple off modes for _single device_. It is good to know that even cellphones can get away with whole devices on/off today. Pavel -- Thanks, Sharp!