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=-3.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS 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 ABDEBC433DF for ; Tue, 25 Aug 2020 05:14:09 +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 295BC20737 for ; Tue, 25 Aug 2020 05:14:09 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alsa-project.org header.i=@alsa-project.org header.b="bBxi8t3I" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 295BC20737 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=renesas.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 8A9171655; Tue, 25 Aug 2020 07:13:17 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 8A9171655 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1598332447; bh=FevFwl7jFGBIc+FmUCudVdJiWk7JLWUzrLQ7OcykL54=; h=Date:From:To:Subject:In-Reply-To:References:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=bBxi8t3IeE/IAVQ2dlfxSDMJq6GsflhzQv7hG475DUfRh/Nuxl6+guWNVNi+n0+t5 6J2BRoAxde3XmUZtev81aMKyqIgCDD/8QKXUqWBvGUlfblSIorcjPXtATCd9ffYovI JVuSbJt+dHVSmBh185Q5bcLnFWy7MsZ7hWJ83poI= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 2C7ADF80245; Tue, 25 Aug 2020 07:13:17 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 37780F8025A; Tue, 25 Aug 2020 07:13:15 +0200 (CEST) Received: from relmlie5.idc.renesas.com (relmlor1.renesas.com [210.160.252.171]) by alsa1.perex.cz (Postfix) with ESMTP id 32DE1F800EB for ; Tue, 25 Aug 2020 07:13:08 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 32DE1F800EB Date: 25 Aug 2020 14:13:05 +0900 X-IronPort-AV: E=Sophos;i="5.76,351,1592838000"; d="scan'208";a="55444248" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie5.idc.renesas.com with ESMTP; 25 Aug 2020 14:13:05 +0900 Received: from mercury.renesas.com (unknown [10.166.252.133]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id 5180941CAB97; Tue, 25 Aug 2020 14:13:05 +0900 (JST) Message-ID: <87r1rvwbsd.wl-kuninori.morimoto.gx@renesas.com> From: Kuninori Morimoto To: Sameer Pujar Subject: Re: More Generic Audio Graph Sound Card idea In-Reply-To: References: <87k0xszlep.wl-kuninori.morimoto.gx@renesas.com> <20200821121844.GF4870@sirena.org.uk> <878se4zybn.wl-kuninori.morimoto.gx@renesas.com> <58220f32-0b3e-d666-5bb0-bbeae27f6aab@nvidia.com> <87364by23u.wl-kuninori.morimoto.gx@renesas.com> User-Agent: Wanderlust/2.15.9 Emacs/26.3 Mule/6.0 MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII Cc: sharadg@nvidia.com, Linux-ALSA , Mark Brown , Pierre-Louis Bossart , 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" Hi Sameer > > But, I guess new driver 1st version is focus to > > detecting normal-link and DPCM-link only. > > Do you plan to propose something like enum for card2 and has scope for > extension, where link type can be normal/DPCM/codec-to-codec/etc., ? > Since there are so many board variants and may have some specific > requirements, I am wondering being able to detect link type from DT > should be the only motivation for a new driver. I'm now thinking that new one can detect normal-link, DPCM-link, multi-CPU / multi-Codec, Codec-to-Codec as normal audio-graph feature. And has .hook callback for Eeach board specific feature. see my previous mail which was To:Pierre-Louis But, it is still under idea, not yet fixed. > I am afraid that even the new driver won't work as it is for my case > unless a similar compatible and flag exposed for it. So I am not sure > how different it would be from [0]. Yes, that is the reason why I'm discussing how to implement new driver. If we have "-cc-" and you use it on upsteam, we will keep current card driver as-is, and I will create new "card2" driver. Because keeping compatible will be difficult. But I'm not sure what should I do. Thank you for your help !! Best regards --- Kuninori Morimoto