From mboxrd@z Thu Jan 1 00:00:00 1970 From: Takashi Sakamoto Subject: About 'SNDRV_PCM_CLASS_MULTI' for devices with multi-channels Date: Thu, 20 Feb 2014 01:21:33 +0900 Message-ID: <5304DA0D.2020809@sakamocchi.jp> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Return-path: Received: from mail-pa0-f65.google.com (mail-pa0-f65.google.com [209.85.220.65]) by alsa0.perex.cz (Postfix) with ESMTP id 4E276265A65 for ; Wed, 19 Feb 2014 17:21:38 +0100 (CET) Received: by mail-pa0-f65.google.com with SMTP id kq14so353148pab.4 for ; Wed, 19 Feb 2014 08:21:37 -0800 (PST) Received: from [192.168.100.117] (e0109-106-188-242-244.uqwimax.jp. [106.188.242.244]) by mx.google.com with ESMTPSA id sy2sm1983491pbc.28.2014.02.19.08.21.35 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 19 Feb 2014 08:21:36 -0800 (PST) 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: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org Hi all, I have two questions about the usage of this macro. Should I use this macro for new drivers which I'm working for?' http://mailman.alsa-project.org/pipermail/alsa-devel/2014-January/071820.html My drivers support some firewire devices, which is desinged for studio-use and have many channels. Its combination of channels are not designed for surround sound like 5.1ch. Just judging from its name, 'SNDRV_PCM_CLASS_MULTI', I should use this. But there are no drivers which use this macro in current tree, against my expectation that some drivers (ICE1712-pro, RME9652, 6fire usb and so on) should use this macro. Are there any reasons? Regards Takashi Sakamoto o-takashi@sakamocchi.jp