From mboxrd@z Thu Jan 1 00:00:00 1970 From: Clemens Ladisch Subject: Re: question on hardware mixing Date: Tue, 09 Dec 2008 15:06:09 +0100 Message-ID: <493E7B51.3030307@ladisch.de> References: <20081205165341.GA21294@rakim.wolfsonmicro.main> <1228496062-21379-1-git-send-email-broonie@opensource.wolfsonmicro.com> <98769532B4BB14429434178695419EAE26861315@bgsmsx501.gar.corp.intel.com> <75b66ecd0812052058r36ed20fdo3dc6e40ac23339bf@mail.gmail.com> <98769532B4BB14429434178695419EAE268614A1@bgsmsx501.gar.corp.intel.com> <493E31E3.2080504@ladisch.de> <98769532B4BB14429434178695419EAE268E0FA6@bgsmsx501.gar.corp.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from out1.smtp.messagingengine.com (out1.smtp.messagingengine.com [66.111.4.25]) by alsa0.perex.cz (Postfix) with ESMTP id C3F7724471 for ; Tue, 9 Dec 2008 15:06:13 +0100 (CET) In-Reply-To: <98769532B4BB14429434178695419EAE268E0FA6@bgsmsx501.gar.corp.intel.com> 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: "Harsha, Priya" Cc: "alsa-devel@alsa-project.org" , Lee Revell List-Id: alsa-devel@alsa-project.org Harsha, Priya wrote: > If I define mixer controls to switch between each substream, I wrote "mixer controls to switch between these settings for each substream", i.e., each substream would have its own flag. > can I use snd_pcm_t->private_data to communicate if it's a voice or > audio ALSA does not have a predefined mechanism to set it from userspace. Your driver can initialize it when it is probed, or it can change it when opening the substream. HTH Clemens