From mboxrd@z Thu Jan  1 00:00:00 1970
From: "xinyun liu" <xinyunliu.osc@gmail.com>
Subject: detect extern/internel mic
Date: Thu, 10 May 2007 00:43:07 +0800
Message-ID: <afc365e50705090943k23f5e482k672b59101cd587b2@mail.gmail.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Return-path: <alsa-devel-bounces@alsa-project.org>
Received: from wr-out-0506.google.com (wr-out-0506.google.com [64.233.184.235])
	by alsa0.perex.cz (Postfix) with ESMTP id 50D9D24440
	for <alsa-devel@alsa-project.org>;
	Wed,  9 May 2007 18:43:10 +0200 (CEST)
Received: by wr-out-0506.google.com with SMTP id 58so245324wri
	for <alsa-devel@alsa-project.org>; Wed, 09 May 2007 09:43:09 -0700 (PDT)
Content-Disposition: inline
List-Unsubscribe: <http://mailman.alsa-project.org/mailman/listinfo/alsa-devel>,
	<mailto:alsa-devel-request@alsa-project.org?subject=unsubscribe>
List-Archive: <http://mailman.alsa-project.org/pipermail/alsa-devel>
List-Post: <mailto:alsa-devel@alsa-project.org>
List-Help: <mailto:alsa-devel-request@alsa-project.org?subject=help>
List-Subscribe: <http://mailman.alsa-project.org/mailman/listinfo/alsa-devel>,
	<mailto:alsa-devel-request@alsa-project.org?subject=subscribe>
Sender: alsa-devel-bounces@alsa-project.org
Errors-To: alsa-devel-bounces@alsa-project.org
To: alsa-devel@alsa-project.org
List-Id: alsa-devel@alsa-project.org

It's interesting that when I plug in a headphone or an external
microphone, the build in headphone and microphone will not work.

Is it a driver feature or the hardware do it?

Can anyone give some clue? I'd like to see the code but don't know how
to start. Please give me help. Thx!