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=-2.2 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no 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 48E5FECE58C for ; Thu, 10 Oct 2019 02:21:43 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 471A721848 for ; Thu, 10 Oct 2019 02:21:42 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alsa-project.org header.i=@alsa-project.org header.b="IZc/BU1m" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 471A721848 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=alsa-devel-bounces@alsa-project.org Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id E797C950; Thu, 10 Oct 2019 04:20:49 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz E797C950 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1570674100; bh=E3ukQ5/WCSkgpzShYzBy3BBxLpppmOzbkVJSziiBRlk=; h=To:References:From:Date:In-Reply-To:Cc:Subject:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=IZc/BU1mK4TRCH8Bk95pa8TYOxMmwLxtfMTLoxNSGzuHhhHKnHizFDcrmmEEqEUd3 Pqb3xeKfEVB4eyvlVejFiPC0xEOHbYPYfUzeRLyFf3F6sctxCVTWaZ/zeTqMw8DXbq xn14yTILu+1IhzgwqPoaboDiAVLXNw9nPOLua+H0= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 70033F80322; Thu, 10 Oct 2019 04:20:49 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 949F7F8038F; Thu, 10 Oct 2019 04:20:47 +0200 (CEST) Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 1A466F80113 for ; Thu, 10 Oct 2019 04:20:43 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 1A466F80113 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga105.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 09 Oct 2019 19:20:40 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.67,278,1566889200"; d="scan'208";a="207086506" Received: from peterngx-mobl.amr.corp.intel.com (HELO [10.252.193.198]) ([10.252.193.198]) by fmsmga001.fm.intel.com with ESMTP; 09 Oct 2019 19:20:40 -0700 To: Kuninori Morimoto References: <87r23mgxl7.wl-kuninori.morimoto.gx@renesas.com> <2a28be44-91ad-c140-062b-4d14982042e9@linux.intel.com> <87pnj57a2w.wl-kuninori.morimoto.gx@renesas.com> From: Pierre-Louis Bossart Message-ID: <70a91c94-3c4d-6f78-7a71-bb8bdbc28b6a@linux.intel.com> Date: Wed, 9 Oct 2019 21:20:06 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: <87pnj57a2w.wl-kuninori.morimoto.gx@renesas.com> Content-Language: en-US Cc: Linux-ALSA , Mark Brown Subject: Re: [alsa-devel] Question about DPCM FE vs BE X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" >> It is my understanding that the current code would not support a case >> where a FE is also a BE. >> >> That said, do we want to preclude it? at some point we probably want >> to get rid of the FE/BE distinction and have 'domains' that can be >> chained. So it may not be a good thing to cast a restriction in >> stone. If at some point we need a list of upstream/downstream clients >> maybe we should keep this. > > Yeah, "domains" is nice idea !! > > But, before that, I think we need to cleanup soc-pcm. > I'm reading it, but it is too much complex, and too unreadable... > I want to cleanup it first. I believe it can help > the conversion (= FE/BE to domains). The idea of domains/constraint propagation is not mine BTW, it was presented by Lars some 2-3 years ago. there may be a note somewhere in the audio miniconference minutes. _______________________________________________ Alsa-devel mailing list Alsa-devel@alsa-project.org https://mailman.alsa-project.org/mailman/listinfo/alsa-devel