From mboxrd@z Thu Jan 1 00:00:00 1970 From: Steve Poulsen Subject: Re: OMAP5912 AIC23 Date: Mon, 25 Aug 2008 20:56:13 -0500 Message-ID: <48B362BD.10009@css-design.us> References: <65e025470808251004w109cece7t9caeaa81b422554b@mail.gmail.com> <65e025470808251011j42564e2g7a445558f9e82559@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from elasmtp-mealy.atl.sa.earthlink.net ([209.86.89.69]:42958 "EHLO elasmtp-mealy.atl.sa.earthlink.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757053AbYHZB4P (ORCPT ); Mon, 25 Aug 2008 21:56:15 -0400 In-Reply-To: <65e025470808251011j42564e2g7a445558f9e82559@mail.gmail.com> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: Yuri Jaeger Monti Cc: "linux-omap@vger.kernel.org" Yuri, We have had good luck with ARM audio under this setup. We did write our own AIC23 drivers which we used directly from our application. We used a device entry (/dev/aic23) that hooked in our driver. We were able to open those in any application and play/record or both. The only possible problem was if we tried to do things like "cat file.pcm > /dev/aic23". Although this would work, some cases would not work due to those applications buffering schemes. For example, this was bad: "cat /dev/aic23 > /dev/aic23". It would work, but would be choppy. How are you playing audio? Steve Yuri Jaeger Monti wrote: > Hi fellows, > > I tried everything I could to solve the buffer underrun error's while > playing some audio in the OSK5912 with the AIC23, and I don't know > what should I do anymore. > I'm trying to simply output and audio file via the ARM, I think this > should be ok but the audio is always choppy. > Am I doing something wrong? Or perhaps should I use only the DSP > processor to play the audio? (didn't tried this yet because I need the > DSP to do other tasks). > > Cheers > > --- > Yuri Jaeger Monti > -- > To unsubscribe from this list: send the line "unsubscribe linux-omap" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > >