From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joonyoung Shim Subject: [PATCH] ASoC: OMAP: Add checking to detect bufferless pcms Date: Wed, 22 Apr 2009 10:56:50 +0900 Message-ID: <49EE7962.6080008@samsung.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mailout3.samsung.com (mailout3.samsung.com [203.254.224.33]) by alsa0.perex.cz (Postfix) with ESMTP id 844EA244E0 for ; Wed, 22 Apr 2009 03:57:03 +0200 (CEST) Received: from epmmp2 (mailout3.samsung.com [203.254.224.33]) by mailout3.samsung.com (iPlanet Messaging Server 5.2 Patch 2 (built Jul 14 2004)) with ESMTP id <0KIH007ESC2QSC@mailout3.samsung.com> for alsa-devel@alsa-project.org; Wed, 22 Apr 2009 10:56:50 +0900 (KST) Received: from TNRNDGASPAPP1.tn.corp.samsungelectronics.net ([165.213.149.150]) by mmp2.samsung.com (iPlanet Messaging Server 5.2 Patch 2 (built Jul 14 2004)) with ESMTPA id <0KIH005WMC2QPT@mmp2.samsung.com> for alsa-devel@alsa-project.org; Wed, 22 Apr 2009 10:56:50 +0900 (KST) 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: alsa-devel@alsa-project.org Cc: kyungmin.park@samsung.com, broonie@opensource.wolfsonmicro.com, peter.ujfalusi@nokia.com, bhmin@samsung.com List-Id: alsa-devel@alsa-project.org Add checking in hw_params and prepare to detect bufferless pcms(i.e. BT <--> codec). Signed-off-by: Joonyoung Shim --- sound/soc/omap/omap-pcm.c | 9 ++++++++- 1 files changed, 8 insertions(+), 1 deletions(-) diff --git a/sound/soc/omap/omap-pcm.c b/sound/soc/omap/omap-pcm.c index 07cf7f4..6454e15 100644 --- a/sound/soc/omap/omap-pcm.c +++ b/sound/soc/omap/omap-pcm.c @@ -87,8 +87,10 @@ static int omap_pcm_hw_params(struct snd_pcm_substream *substream, struct omap_pcm_dma_data *dma_data = rtd->dai->cpu_dai->dma_data; int err = 0; + /* return if this is a bufferless transfer e.g. + * codec <--> BT codec or GSM modem -- lg FIXME */ if (!dma_data) - return -ENODEV; + return 0; snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer); runtime->dma_bytes = params_buffer_bytes(params); @@ -134,6 +136,11 @@ static int omap_pcm_prepare(struct snd_pcm_substream *substream) struct omap_pcm_dma_data *dma_data = prtd->dma_data; struct omap_dma_channel_params dma_params; + /* return if this is a bufferless transfer e.g. + * codec <--> BT codec or GSM modem -- lg FIXME */ + if (!prtd->dma_data) + return 0; + memset(&dma_params, 0, sizeof(dma_params)); /* * Note: Regardless of interface data formats supported by OMAP McBSP -- 1.5.6.3