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=-4.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT 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 A7FCFC433E0 for ; Fri, 19 Jun 2020 04:55:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7971C20CC7 for ; Fri, 19 Jun 2020 04:55:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592542504; bh=bFexccscXk2UlaIa+BaEhorrfA99CZlAzpnuwyv3vSg=; h=From:To:Cc:Subject:Date:List-ID:From; b=qzcq6Lx0zLcB/nq1GprBMO47ZY8cQzVQJHlvlkGeYFeXai3mNEJIZtUPbJ7XXCHKZ Lu3BzqGOFAF+KcQZ+CrRHZP69qmatMhSruge+8qUYOrYKWGvIiwj9H5EMdGPcYlteJ 3XZd4GfF3fnup4fJ5tfvoZ/O7HcoApJM3WFolLeU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727114AbgFSEzD (ORCPT ); Fri, 19 Jun 2020 00:55:03 -0400 Received: from mail.kernel.org ([198.145.29.99]:58112 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725935AbgFSEzC (ORCPT ); Fri, 19 Jun 2020 00:55:02 -0400 Received: from localhost.localdomain (unknown [171.61.66.58]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id C5FF220890; Fri, 19 Jun 2020 04:54:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592542502; bh=bFexccscXk2UlaIa+BaEhorrfA99CZlAzpnuwyv3vSg=; h=From:To:Cc:Subject:Date:From; b=LnGKm3Z2NDS1Q4yfFCee0znsKJe5Whm49EzlQ8HMzD5RrWZGsRVFNp2o3ULielKJD u9jM6X0PdR2qWV1GMfwV6Gava33WXp6GOgV6yBXS/fJ9v+SmdZBL09VhI5BODQiHbC Rj92N5hz4OKVc+QsVudgvfjkZj5e3LjOaS/MuONw= From: Vinod Koul To: Takashi Iwai , Jaroslav Kysela Cc: Vinod Koul , Pierre-Louis Bossart , Charles Keepax , alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org Subject: [PATCH 0/3] ALSA: compress: Document stream states and fix gaplless SM Date: Fri, 19 Jun 2020 10:24:45 +0530 Message-Id: <20200619045449.3966868-1-vkoul@kernel.org> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Srini found issue with gapless implementation which prompted to look deeper into SM for compressed stream. So documenting SM was first step, so first two patches add that. Last patch fixes the issue by keeping track on partial_drain and then moving state to 'running' in snd_compr_drain_notify() for partial_drain case on success. While at it, noticed snd_compr_drain_notify() is lockless state change, so fixed that as well. I have tested this on Dragon board RB3, compressed audio works out of the box on that platform and Srini will send driver and fcplay patches for gapless soon. Vinod Koul (3): ALSA: compress: document the compress audio state machine ALSA: compress: document the compress gapless audio state machine ALSA: compress: fix partial_drain completion state .../sound/designs/compress-offload.rst | 84 +++++++++++++++++++ include/sound/compress_driver.h | 12 ++- sound/core/compress_offload.c | 4 + 3 files changed, 99 insertions(+), 1 deletion(-) -- 2.26.2