From patchwork Mon Sep 23 16:20:23 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ben Dooks X-Patchwork-Id: 11157303 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 039FE1668 for ; Mon, 23 Sep 2019 16:23:36 +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 82F3B20882 for ; Mon, 23 Sep 2019 16:23:35 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alsa-project.org header.i=@alsa-project.org header.b="Y0SWnvaJ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 82F3B20882 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=codethink.co.uk 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 C5B3A827; Mon, 23 Sep 2019 18:22:43 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz C5B3A827 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1569255813; bh=cBYTjCXSW3ZCHZVTRbsAr/VOckz5XoC5Evsu+8V3Vsg=; h=From:To:Date:In-Reply-To:References:Cc:Subject:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=Y0SWnvaJV97qR0Me1hDkExdFWicJ2nAK6WElP7PAHRAyKjl2/E9y69l+0qTa6618n t4h4iUoQMORCXUukPHaaymjisoI7y5gaLPZMOd6tt2SPPzY5ukjI7VHjaygfjnQtAL W7rvvg6KprkQ05APHRSc9OHcZYx9SLuidE7fIU9U= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 7A2C0F805AA; Mon, 23 Sep 2019 18:20:40 +0200 (CEST) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa1.perex.cz (Postfix, from userid 50401) id 55A2EF805FA; Mon, 23 Sep 2019 18:20:36 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on alsa1.perex.cz X-Spam-Level: X-Spam-Status: No, score=-0.0 required=5.0 tests=SPF_HELO_PASS,SPF_PASS, URIBL_BLOCKED autolearn=disabled version=3.4.0 Received: from imap1.codethink.co.uk (imap1.codethink.co.uk [176.9.8.82]) (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 B0C34F8031A for ; Mon, 23 Sep 2019 18:20:31 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz B0C34F8031A Received: from [167.98.27.226] (helo=rainbowdash.codethink.co.uk) by imap1.codethink.co.uk with esmtpsa (Exim 4.84_2 #1 (Debian)) id 1iCR4e-0001EW-KL; Mon, 23 Sep 2019 17:20:29 +0100 Received: from ben by rainbowdash.codethink.co.uk with local (Exim 4.92.2) (envelope-from ) id 1iCR4d-0003th-Ra; Mon, 23 Sep 2019 17:20:27 +0100 From: Ben Dooks To: linux-tegra@vger.kernel.org, alsa-devel@alsa-project.org, Jaroslav Kysela , Takashi Iwai , Liam Girdwood , Mark Brown , Thierry Reding , Jonathan Hunter Date: Mon, 23 Sep 2019 17:20:23 +0100 Message-Id: <20190923162026.14882-5-ben.dooks@codethink.co.uk> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20190923162026.14882-1-ben.dooks@codethink.co.uk> References: <20190923162026.14882-1-ben.dooks@codethink.co.uk> MIME-Version: 1.0 Cc: linux-kernel@lists.codethink.co.uk, Ben Dooks Subject: [alsa-devel] [PATCH v2 4/7] ASoC: tegra: disable rx_fifo after disable stream 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" We see odd FIFO overruns with this, we assume the best thing to do is to disable the RX I2S frontend first, and then disable the FIFO that is using it. This also fixes an issue where using multi-word frames (TDM) have partial samples stuck in the FIFO which then get read out when the next capture is started. Signed-off-by: Ben Dooks --- sound/soc/tegra/tegra30_i2s.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/soc/tegra/tegra30_i2s.c b/sound/soc/tegra/tegra30_i2s.c index 62377af53ca4..1cc43cdd0eee 100644 --- a/sound/soc/tegra/tegra30_i2s.c +++ b/sound/soc/tegra/tegra30_i2s.c @@ -236,9 +236,9 @@ static void tegra30_i2s_start_capture(struct tegra30_i2s *i2s) static void tegra30_i2s_stop_capture(struct tegra30_i2s *i2s) { - tegra30_ahub_disable_rx_fifo(i2s->capture_fifo_cif); regmap_update_bits(i2s->regmap, TEGRA30_I2S_CTRL, TEGRA30_I2S_CTRL_XFER_EN_RX, 0); + tegra30_ahub_disable_rx_fifo(i2s->capture_fifo_cif); } static int tegra30_i2s_trigger(struct snd_pcm_substream *substream, int cmd,