From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757389AbYDJNFE (ORCPT ); Thu, 10 Apr 2008 09:05:04 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755638AbYDJNEx (ORCPT ); Thu, 10 Apr 2008 09:04:53 -0400 Received: from mx.bridgeco.net ([213.173.191.47]:4761 "EHLO mx.bridgeco.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757127AbYDJNEw convert rfc822-to-8bit (ORCPT ); Thu, 10 Apr 2008 09:04:52 -0400 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8BIT X-MimeOLE: Produced By Microsoft Exchange V6.5 Subject: RE: Starting point: Suspend to RAM on embedded devices? Date: Thu, 10 Apr 2008 15:04:49 +0200 Message-ID: <83116F0A4FF67A4F97BA0B6E408C48E301E96266@zuerich.BC-Int.NET> In-Reply-To: <5699f8f00804100351q427b1a0dxdeb8254b370cb8ed@mail.gmail.com> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: Starting point: Suspend to RAM on embedded devices? Thread-Index: Acia+NOFQPDe4Ih8T5OhmEOr+AwtLQAEizmQ References: <83116F0A4FF67A4F97BA0B6E408C48E301E96208@zuerich.BC-Int.NET> <5699f8f00804100123q2a9d278arf9b076c91efbbd56@mail.gmail.com> <83116F0A4FF67A4F97BA0B6E408C48E301E96234@zuerich.BC-Int.NET> <5699f8f00804100351q427b1a0dxdeb8254b370cb8ed@mail.gmail.com> From: "Wappler Marcel" To: "Wander Winkelhorst" Cc: X-OriginalArrivalTime: 10 Apr 2008 13:05:00.0928 (UTC) FILETIME=[7C1D0000:01C89B0B] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Wander Winkelhorst wrote: > Well, my tomtom one V2 takes a couple (5-10) of seconds to wake up > again. but that time includes reinitialising the bluetooth chip, > checking the SD card, restarting the GPS, loading AGPS data and > resuming the navigation software. If you don't have to do all those > things it would probably resume a lot faster. So Wander, I had a short look in to the opentom.org project and have got a lot of new questions: - does the opentom.org kernel support the original "suspend to RAM" functionality of TomToms kernel? - is there anybody using this functionality? - has somebody measured the power consuption in the sleep mode? - the opentom kernel has a file "/arch/arm/kernel/apm.c" which is not in the normal Linux kernels. Where comes this file and other power saving infrastructure from, where can I grab it, is there anyone else out there using it, on which device? Thanks, Marcel Marcel Wappler Bridgeco AG CH-8600 Dübendorf Switzerland