From mboxrd@z Thu Jan 1 00:00:00 1970 From: Petr Kulhavy Subject: Re: Codec "virtual multiplexer" representation Date: Wed, 24 Feb 2016 17:57:30 +0100 Message-ID: <56CDE0FA.8000905@barix.com> References: <56C499A7.2040202@barix.com> <20160218053021.GE6263@borg.dal.design.ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Return-path: Received: from mail-wm0-f52.google.com (mail-wm0-f52.google.com [74.125.82.52]) by alsa0.perex.cz (Postfix) with ESMTP id 0FB5A26153C for ; Wed, 24 Feb 2016 17:57:32 +0100 (CET) Received: by mail-wm0-f52.google.com with SMTP id b205so42701936wmb.1 for ; Wed, 24 Feb 2016 08:57:32 -0800 (PST) In-Reply-To: <20160218053021.GE6263@borg.dal.design.ti.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org To: Andreas Dannenberg Cc: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org On 18.02.2016 06:30, Andreas Dannenberg wrote: > > Petr, > on a related note, I'm currently working on a combined driver (85% > complete) for TAS5720/TAS5722 which are nice but relatively simple > Class-D mono amplifiers. Despite almost having the same P/N there is > little to no similarity with TAS5721 (which gives a another example why > one should be careful with wildcard 'x' in driver names) so there is no > case for a combined driver here but let's make sure we align our > namespace to avoid collision: > > tas5720.[c|h] - Driver for TAS5720/TAS5722 (WIP by Andreas) > tas5721.[c|h] - Driver for TAS5721 (WIP by Petr) > > Regards, > > -- > Andreas Dannenberg > Texas Instruments Inc > Hi Andreas, thanks for letting me know! In the meantime I have found there is a driver for TAS5711, TAS5717 and TAS5719. The TAS5721 is very similar to the 5711, so I will just update that driver rather than creating a new one. One question came to my mind, which you can perhaps help me to answer as you are more familiar with these amplifiers: what is the usual representation of a 2.1 system in controls? I'm wondering that the TAS5711 has just master volume and a double slider for Ch1/Ch2, but there is no Ch3 control. Surely that is needed as well, isn't it? Regards Petr