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=-5.5 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A, SPF_HELO_NONE,SPF_PASS,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 7F296C4727E for ; Fri, 25 Sep 2020 20:51:31 +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 8CE832086A for ; Fri, 25 Sep 2020 20:51:30 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alsa-project.org header.i=@alsa-project.org header.b="G00wg5rH" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8CE832086A 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 149DB194A; Fri, 25 Sep 2020 22:50:39 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 149DB194A DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1601067089; bh=sIEdRQnQrYofDtlsEoOOaB5GOZHb4ow977skj545eUo=; h=Subject:To:References:From:Date:In-Reply-To:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=G00wg5rHRFRdKCFaRi51JfmTUIaldsfgw7d/CNmns6rTOWZVALojip3LFMigdb+Ub ZAZG3bNzk99seCwnuPbyv5Z0fSKc1fR8TtgRwc3Ae0rAppB2VDdrRBzB71wft0dwRF Yvg9WlrDgFXiISD+BDDRX/OULVB2LBFfElAcWtZU= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 99FA3F80171; Fri, 25 Sep 2020 22:50:38 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 0E5E3F801EB; Fri, 25 Sep 2020 22:50:38 +0200 (CEST) Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) (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 818EBF80162 for ; Fri, 25 Sep 2020 22:50:33 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 818EBF80162 IronPort-SDR: jOryV21eAVkkUQszjoclH9wVAFcYla1DYxO8IObV0EUHh2BD6BA2jgVBV2rTBKp+GdceKRUQQi T7NOjcqRmcgQ== X-IronPort-AV: E=McAfee;i="6000,8403,9755"; a="161720454" X-IronPort-AV: E=Sophos;i="5.77,303,1596524400"; d="scan'208";a="161720454" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Sep 2020 13:50:31 -0700 IronPort-SDR: +y6XqKiIGhPS/JZn//b7Bwn6ep2Yt7DVCF/Q15C/VDqdsaNsWNEFyIQRI2y7HcpZQPwubBzrQK BY0jWSXE0+Pw== X-IronPort-AV: E=Sophos;i="5.77,303,1596524400"; d="scan'208";a="513140872" Received: from mfischmx-mobl1.amr.corp.intel.com (HELO [10.209.30.115]) ([10.209.30.115]) by fmsmga005-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Sep 2020 13:50:30 -0700 Subject: Re: More Generic Audio Graph Sound Card idea To: Mark Brown References: <87k0xszlep.wl-kuninori.morimoto.gx@renesas.com> <097e3fc4-4a84-e101-e6b6-045c3e9e5bfc@nvidia.com> <87imdczd4i.wl-kuninori.morimoto.gx@renesas.com> <87blhuljkb.wl-kuninori.morimoto.gx@renesas.com> <20200925192202.GA9831@sirena.org.uk> <20200925201057.GI4841@sirena.org.uk> From: Pierre-Louis Bossart Message-ID: <085030a3-201a-70d9-5f04-89bb19b98532@linux.intel.com> Date: Fri, 25 Sep 2020 15:50:29 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20200925201057.GI4841@sirena.org.uk> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Cc: Sameer Pujar , Linux-ALSA , Kuninori Morimoto , jonathanh@nvidia.com 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: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" > If a device is hard limited to particular slots we can presumably > discover that (either through the spec or by keying off the ID > registers) and do the right thing? In any case if we need a firmware > mapping for DT systems it sounds like something that works for TDM > should be mappable onto SoundWire channels easily enough. yes, if we can define a notion of logical TDM 'slot group' (e.g. headphone, mic, streamA, , etc), then the mapping with SoundWire data ports is straightforward. The mapping would typically come from platform firmware, not by checking device registers. The actual value of a TDM slot which defines the transport position is however irrelevant for SoundWire.