From mboxrd@z Thu Jan 1 00:00:00 1970 From: Igor Stoppa Subject: Re: [RFC Disable suspend on a specific device] This is a little change in linux power scheme Date: Wed, 08 Apr 2009 19:44:01 +0300 Message-ID: <1239209041.6228.217.camel@localhost> References: <200904072257.23756.rjw@sisk.pl> <200904081013.25301.rjw@sisk.pl> <49DC5F58.7070705@gandalf.sssup.it> <200904081034.56624.rjw@sisk.pl> <20090408114212.GK20122@sirena.org.uk> Reply-To: igor.stoppa@nokia.com Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20090408114212.GK20122@sirena.org.uk> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-pm-bounces@lists.linux-foundation.org Errors-To: linux-pm-bounces@lists.linux-foundation.org To: ext Mark Brown Cc: "linux-pm@lists.linux-foundation.org" , Nigel Cunningham List-Id: linux-pm@vger.kernel.org On Wed, 2009-04-08 at 13:42 +0200, ext Mark Brown wrote: > On Wed, Apr 08, 2009 at 10:34:56AM +0200, Rafael J. Wysocki wrote: > > > I think this is a rather fundamental issue and it requires some more thought. > > > What platform is your device based on, BTW? > > FWIW this is an issue for a very large proportion of modern mobile phone > platforms - when on a call they can often suspend the bulk of the system > while leaving the audio path used for the call alive (normally some > combination of the telephony modem, audio CODEC and bluetooth chipset) > and wake up if the user presses a button or similar. That might be the outcome, but it should be simply because those parts which are not in use are idle and therefore can enter spontaneously into a low power state. -- Cheers, Igor --- Igor Stoppa Maemo Software - Nokia Devices R&D - Helsinki