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 7EC24C433E1 for ; Thu, 27 Aug 2020 01:19:08 +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 065AC2075B for ; Thu, 27 Aug 2020 01:19:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alsa-project.org header.i=@alsa-project.org header.b="Bgqbfu+0" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 065AC2075B 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 7A30417C8; Thu, 27 Aug 2020 03:18:16 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 7A30417C8 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1598491146; bh=IYt5ehTs0odMOW6ADceSmRTBabKVYU2X4V+Asz/+0x0=; h=Date:From:To:Subject:In-Reply-To:References:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=Bgqbfu+0GO2U664ihDvDfeTZ12FBC2nyTkjOKeeNMx1+VG57IODWvsDkl+M1vMYIW dLi9EjDt9BiXOBLDDaSw/VyTUiMU/FhVjFxyguvIdZg3EzPNBiYT6zPFkV767xpDQH p2dCxO32XlIPa+nYPlmrgMjkBcXzqe/1JyScYaRw= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id D5DF9F8016F; Thu, 27 Aug 2020 03:18:15 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id A10E3F801D9; Thu, 27 Aug 2020 03:18:13 +0200 (CEST) Received: from relmlie6.idc.renesas.com (relmlor2.renesas.com [210.160.252.172]) by alsa1.perex.cz (Postfix) with ESMTP id CD6FDF800EB for ; Thu, 27 Aug 2020 03:18:08 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz CD6FDF800EB Date: 27 Aug 2020 10:18:04 +0900 X-IronPort-AV: E=Sophos;i="5.76,357,1592838000"; d="scan'208";a="55415151" Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie6.idc.renesas.com with ESMTP; 27 Aug 2020 10:18:04 +0900 Received: from mercury.renesas.com (unknown [10.166.252.133]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id E4654400C09F; Thu, 27 Aug 2020 10:18:04 +0900 (JST) Message-ID: <871rjsx51e.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> <87r1rvwbsd.wl-kuninori.morimoto.gx@renesas.com> <2d9140c7-7cba-34d9-d4b7-c9f9f395d9e7@nvidia.com> <87mu2jw7zd.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 > What you are suggesting is 'audio-graph-card2' is a new restructured > version of 'audio-graph-card' with some additional customization > available for specific users. Do you think updating existing > 'audio-graph-card' itself, with necessary hooks, would be too > complicated to handle? It depends on how new driver was implemented. If we need to keep current card, I will keep it as-is and do nothing anymore, and has customize option at card2. If we update current card, customize option will be added to it. > From a brief overview, it may solve my issue in customizing few > stuff. But I am not too sure if we want to go that way, because > eventually we end up in writing a separate machine driver for Tegra > (though there can be common stuff used from the generic graph > card). The original idea was to use 'audio-graph-card' and people > facing similar issues could use "-cc-" compatible. The biggest issue on current audio-graph-card is that DPCM feature is limited, and because of it, the link detection is very tricky. Your "-cc-" assumes all links are DPCM, but it is more limitation. We want to have more flexible/generic detection. > > dsp { > > compatible = "audio-graph-card2-dsp"; > > Sorry I did not understand this. Do you intend to parse 'dsp' > separately with some version of audio graph card? In my case 'dsp' is > just a 'crossbar' and is registered as a component exposing all > routes. However I have described links in the DT in a similar way > where my 'crossbar' is exposing FEs and BEs like below. This compatible is used just for indicating audio-graph DSP. "audio-graph-card" will parse it if it was connected. If you confuse it, just ignore for now. Thank you for your help !! Best regards --- Kuninori Morimoto