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 207CFC4708C for ; Fri, 28 May 2021 09:09:41 +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 38F146124B for ; Fri, 28 May 2021 09:09:39 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 38F146124B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.de 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 85AA416F3; Fri, 28 May 2021 11:08:48 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 85AA416F3 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1622192978; bh=WBhipp6Z/nmJo6D8pcaR2QtvpudzYeAqOpCefu2sLK4=; h=Date:From:To:Subject:In-Reply-To:References:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=bJXo0XruW9p2rHcLqAKvUUDOpZ21dW0LQ6FsQ4tpVTacEF2aEWzSdcjwHUrp8Rssw ObekyoPVjO743p3Emo+kpLEzJ5KUVqO9lvwvW6RqAa/zx0rPl83hC1/6kiDEDjJCUh o/NoddOqSOtdBrVrNLL1w2t/vtKVwUJzJYonjgjk= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 38E4EF8026F; Fri, 28 May 2021 11:08:22 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 52733F80274; Fri, 28 May 2021 11:08:20 +0200 (CEST) Received: from mx2.suse.de (mx2.suse.de [195.135.220.15]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id C4F55F80264 for ; Fri, 28 May 2021 11:08:16 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz C4F55F80264 Authentication-Results: alsa1.perex.cz; dkim=pass (1024-bit key) header.d=suse.de header.i=@suse.de header.b="MEbMSSkK"; dkim=permerror (0-bit key) header.d=suse.de header.i=@suse.de header.b="QmqrcJ8Y" X-Virus-Scanned: by amavisd-new at test-mx.suse.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1622192896; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=V7/T190IoJTockrDdhNsdtofXD3vl3IiZ3V1XzGxAT4=; b=MEbMSSkK6hA51w+dY8q2CAhGffwSXU4g1jKCE33Ij5bOyV/WgmHUtHDigIcUg92bI+egEL 0lvBpLYHOkqVYviWdRBIQpNwTahTq8Cb4TRp51eVpMgHiEr04rDu/Dk4iUlhKXnPOIibcN jgP0BgAakyXxpI+0mCo1YtknIbDWpbc= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1622192896; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=V7/T190IoJTockrDdhNsdtofXD3vl3IiZ3V1XzGxAT4=; b=QmqrcJ8YA8Tcmv5UAjV3/ldiz6YRpDPrPUb5irKaQpB/g8wg5l6FDLtRrC9x6pKgku6ijf /NsSK2GZ7YWxcVAA== Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 84783AE86; Fri, 28 May 2021 09:08:16 +0000 (UTC) Date: Fri, 28 May 2021 11:08:16 +0200 Message-ID: From: Takashi Iwai To: Takashi Sakamoto Subject: Re: [PATCH 0/3] ALSA: firewire-lib: preparation for media clock recovery In-Reply-To: <20210527122611.173711-1-o-takashi@sakamocchi.jp> References: <20210527122611.173711-1-o-takashi@sakamocchi.jp> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI/1.14.6 (Maruoka) FLIM/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL/10.8 Emacs/25.3 (x86_64-suse-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Content-Type: text/plain; charset=US-ASCII Cc: alsa-devel@alsa-project.org, clemens@ladisch.de 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" On Thu, 27 May 2021 14:26:08 +0200, Takashi Sakamoto wrote: > > Hi, > > ALSA IEC 61883-1/6 packet streaming engine have been using pre-computed > parameters ideal for nominal sampling transfer frequency (STF), to > transfer packets to device since it was added 2011. As a result of user > experience for a decade, it is clear that the sequence is not suitable > to some actual devices. > > In design of audio and music unit in IEEE 1394 bus, feedback of > effective sampling transfer frequency is delivered by packets transferred > from device. Reuse of the sequence of parameter in the packets results > in pseudo media clock recovery to transfer packet. > > In this patchset, an option is added to AMDTP domain so that each of > AMDTP stream for outgoing packet has association to AMDTP stream for > incoming packet, to replay the sequence of parameter. Some devices > require receiving packet on-the-fly to transfer packets, so another > option is added. > > These options are just added, not used yet in this time. In future work, > they are going to be used by drivers in ALSA firewire stack. > > Takashi Sakamoto (3): > ALSA: firewire-lib: add replay target to cache sequence of packet > ALSA: firewire-lib: replay sequence of incoming packets for outgoing > packets > ALSA: firewire-lib: transfer rx packets on-the-fly when replaying Applied all three patches now. Thanks. Takashi