From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932327AbYEVMgZ (ORCPT ); Thu, 22 May 2008 08:36:25 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757951AbYEVMgR (ORCPT ); Thu, 22 May 2008 08:36:17 -0400 Received: from out1.smtp.messagingengine.com ([66.111.4.25]:39131 "EHLO out1.smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754831AbYEVMgQ (ORCPT ); Thu, 22 May 2008 08:36:16 -0400 X-Sasl-enc: GnSeedZJiCGCJ3HeMMzQXDHD1DK4S5QRQt4bokW7UACi 1211459774 Message-ID: <483568BD.4040701@ladisch.de> Date: Thu, 22 May 2008 14:36:13 +0200 From: Clemens Ladisch User-Agent: Thunderbird 2.0.0.14 (Windows/20080421) MIME-Version: 1.0 To: Kallol Biswas CC: Lee Revell , linux-kernel@vger.kernel.org Subject: Re: HDMI Audio Support in ALSA References: <438397970805190904i2656337dh26a3257fe52aa29d@mail.gmail.com> <75b66ecd0805190916r7ce21667laf19783dfa47cdd7@mail.gmail.com> <438397970805190938t195d9a8ejfd5b0ca1409714ab@mail.gmail.com> <48328771.4030804@ladisch.de> <438397970805211252u1d228ad8wcb1a6ef9b1251478@mail.gmail.com> In-Reply-To: <438397970805211252u1d228ad8wcb1a6ef9b1251478@mail.gmail.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org (please don't top-post!) Kallol Biswas wrote: > I am looking at 2.6.25.4 kernel source code. The header file pcm.h > does not have any definition for supporting IEC 60958 or IEC 61937 frame types. Almost all S/PDIF transmitters/receivers use SNDRV_PCM_FORMAT_S16. (Some use S32 for 24-bit samples, but this doesn't matter for IEC 60958/61937.) > However, SNDRV_PCM_FMTBIT_IEC958_SUBFRAME is supported. This is only for some early revisions of the CMI8738 chip which require software to generate the preamble/channel status/subcode/parity bits for each subframe. Regards, Clemens