From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Brown Subject: Re: Not able to restart audio after hibernation Date: Sun, 8 Jan 2012 21:53:58 -0800 Message-ID: <20120109055357.GL29065@opensource.wolfsonmicro.com> References: <4F06D156.1020208@st.com> <20120106183203.GA2893@opensource.wolfsonmicro.com> <20120109031645.GA21422@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from opensource.wolfsonmicro.com (opensource.wolfsonmicro.com [80.75.67.52]) by alsa0.perex.cz (Postfix) with ESMTP id 1B414103957 for ; Mon, 9 Jan 2012 06:54:52 +0100 (CET) Content-Disposition: inline In-Reply-To: <20120109031645.GA21422@localhost.localdomain> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: alsa-devel-bounces@alsa-project.org Errors-To: alsa-devel-bounces@alsa-project.org To: Shiraz Hashim Cc: "alsa-devel@alsa-project.org" , Rajeev KUMAR , "tiwai@suse.de" , "spear--sw-devel@lists.codex.cro.st.com" , Armando VISCONTI , "lrg@ti.com" List-Id: alsa-devel@alsa-project.org On Mon, Jan 09, 2012 at 08:46:45AM +0530, Shiraz Hashim wrote: > On Sat, Jan 07, 2012 at 02:32:05AM +0800, Mark Brown wrote: > > This suggests that you have a bug in your suspend and resume > > implementation, possibly outside of this driver. > The driver works absolutely fine in case of suspend to ram where the > power domains (which includes the I2S controller) is switched off. That doesn't mean everything is OK, for example the clock tree or DMA controller might not be preserving state properly. > As the soc-core.c misses hibernation call backs of dev_pm_ops, we were > wondering whether it has been tested before on some other platform. Not to my knowledge, but I don't see any reason why anything more than the trivial implementation should really be needed except for the general pointlessness of resuming after hibernating.