From mboxrd@z Thu Jan 1 00:00:00 1970 From: ANISH KUMAR Subject: DMA interrupt not getting triggered(nailed the problem need solution) Date: Mon, 08 Feb 2010 02:34:29 +0000 (GMT) Message-ID: <15824817.821301265596468706.JavaMail.weblogic@epml09> Reply-To: anish.singh@samsung.com Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mailout5.samsung.com (mailout5.samsung.com [203.254.224.35]) by alsa0.perex.cz (Postfix) with ESMTP id 7DC632435F for ; Mon, 8 Feb 2010 03:34:47 +0100 (CET) Received: from ep_ms13_bk (mailout5.samsung.com [203.254.224.35]) by mailout1.samsung.com (iPlanet Messaging Server 5.2 Patch 2 (built Jul 14 2004)) with ESMTP id <0KXI00IGL4HH6E@mailout1.samsung.com> for alsa-devel@alsa-project.org; Mon, 08 Feb 2010 11:34:29 +0900 (KST) Received: from ep_spt01 (ms13.samsung.com [203.254.225.109]) by ms13.samsung.com (iPlanet Messaging Server 5.2 Patch 2 (built Jul 14 2004)) with ESMTP id <0KXI009DI4HHJR@ms13.samsung.com> for alsa-devel@alsa-project.org; Mon, 08 Feb 2010 11:34:29 +0900 (KST) Content-return: prohibited MIME-version: 1.0 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: jassi brar Cc: "alsa-devel@alsa-project.org" , ben-linux@fluff.org, "JaroslavKyselaperex@perex.cz" List-Id: alsa-devel@alsa-project.org Hi All, This problem is due to ETIMEDOUT(timeout) happening in s3c_snd_lrsync function(called by trigger). As i understand this could be due I2S being broken. This basically happens because of improper initialization of CPU or CODEC. But if that is the case then it would not have produced sound initially also but that is not the case(initially it is ringing i.e. interrupt coming for a short time then after i am getting time out problem)?? After this sound is not coming this happens when it does the initialisation again using open, prepare,enqueue and so on. Please provide any pointers which can help me out. Thanks & High Regards, anish