From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.4 required=3.0 tests=DKIM_SIGNED, MAILING_LIST_MULTI,SPF_PASS,T_DKIM_INVALID,USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D30B7C43144 for ; Tue, 26 Jun 2018 14:18:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 813D926308 for ; Tue, 26 Jun 2018 14:18:50 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=sirena.org.uk header.i=@sirena.org.uk header.b="WtgDB6T3" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 813D926308 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935887AbeFZOSr (ORCPT ); Tue, 26 Jun 2018 10:18:47 -0400 Received: from heliosphere.sirena.org.uk ([172.104.155.198]:46400 "EHLO heliosphere.sirena.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934063AbeFZOSq (ORCPT ); Tue, 26 Jun 2018 10:18:46 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sirena.org.uk; s=20170815-heliosphere; h=In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=pNVlFMUgqEzbbua+EVgQjwdOvyJ9IVralZn1xyEAUy0=; b=WtgDB6T335K9IJVDqs5n2pdcn N6wWpmMJzrSEpUtf6s3RIZpEbattkkMbCZiY1QPTszPNFag27L78DFhCZZ4qzfphhyktlCrERe+mC nZrZw8bFYBsHYNeXB1/f2zt5PpgoB5KRvbp5BdKu9OoZwJTmbanaLk4536VcuSAld8ayo=; Received: from host109-146-194-33.range109-146.btcentralplus.com ([109.146.194.33] helo=finisterre.ee.mobilebroadband) by heliosphere.sirena.org.uk with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1fXonm-0001HL-W1; Tue, 26 Jun 2018 14:18:39 +0000 Received: by finisterre.ee.mobilebroadband (Postfix, from userid 1000) id 7160D440070; Tue, 26 Jun 2018 15:18:37 +0100 (BST) Date: Tue, 26 Jun 2018 15:18:37 +0100 From: Mark Brown To: Jerome Brunet Cc: jiada_wang@mentor.com, lgirdwood@gmail.com, perex@perex.cz, tiwai@suse.com, alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org Subject: Re: [alsa-devel] [PATCH 1/1] ASoC: soc-pcm: DPCM cares BE channel constraint Message-ID: <20180626141837.GF1779@sirena.org.uk> References: <20180620092520.14101-1-jiada_wang@mentor.com> <1530008318.2900.44.camel@baylibre.com> <20180626115526.GC1779@sirena.org.uk> <1530014920.2900.50.camel@baylibre.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="NQTVMVnDVuULnIzU" Content-Disposition: inline In-Reply-To: <1530014920.2900.50.camel@baylibre.com> X-Cookie: PARDON me, am I speaking ENGLISH? User-Agent: Mutt/1.10.0 (2018-05-17) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --NQTVMVnDVuULnIzU Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Jun 26, 2018 at 02:08:40PM +0200, Jerome Brunet wrote: > From comment here and in other mails, I get that you are not big fan of D= PCM :) > It is indeed a complex beast ... > It there anything else we can use to represent audio routing within the S= oC ? > The SoC I'm working on make heavy use of this, unfortunately.=20 The goal is to be able to propagate digital configuration along audio paths in much the same way as we currently do for power with DAPM. Lars did a presentation with a good writeup of a proposal for that at ELC-E a few years ago. Unfortunately the only person that is really able to find time to work on this at the minute is Morimoto-san, this is what his componentization changes are driving towards - part of the design is that everything in the system will be a component and we can therefore treat every device identically. --NQTVMVnDVuULnIzU Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAlsySzkACgkQJNaLcl1U h9BeMAf/S/+T+a9a2BmSaYJTz8xBAweB70bnNa1smJN+ebaAu6zaz5OqOoCzrlh3 LDmZHNQYSVxx28hdko1q7ZjLE42mOWY7Xrs5DEBRCuJHJtfeXzFWsNyAv9tOyBEf CxwnWsSQNeQftrI9XH1+2CITMbUJ9PR3Ifvu2X2ua5VhJP82qfOLed12H7yWYy6A fU36dYPLWd5V9l6kFHiO9tbnhLUaVCXx4Faa/HgkmzIp0fzSjRdGU65+K7vjPXaj GHpNKo3jR+3INlv43zPHwatYpGcmrvGwwQW92TAes8/Nj/Q6Nn7B5yqJAhOUMiiw aoA4AxHRlnspfQlhZxB/nIXNG7TkTQ== =aRcD -----END PGP SIGNATURE----- --NQTVMVnDVuULnIzU--