From patchwork Fri Oct 18 15:48:30 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ben Dooks X-Patchwork-Id: 11198969 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 9ABB113BD for ; Fri, 18 Oct 2019 15:54:44 +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 2718D2064B for ; Fri, 18 Oct 2019 15:54:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alsa-project.org header.i=@alsa-project.org header.b="D1fgJuOB" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2718D2064B 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 5227716B0; Fri, 18 Oct 2019 17:53:52 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 5227716B0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1571414082; bh=cMGRPu/TFP6bKaqlOttoUqtDNWxkMj6TqfccKFO0CVs=; h=From:To:Date:In-Reply-To:References:Cc:Subject:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=D1fgJuOBNlDQru+MRXFU7pWz9aultangwRNQDG2ECwg16G8f9YBNlro95ep7ujxaT KfzOq3mwUl0hC2v6oDbZSXGfFr+0FAZA5IgJ13fPs5ItJihd+A6U1TpPaoW1a/96/4 WME/tvBre1AmOpJIJeLhvtOFwopP8Dgr/KOkXCJ8= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 8770EF805FF; Fri, 18 Oct 2019 17:48:46 +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 2C1B4F805FD; Fri, 18 Oct 2019 17:48:43 +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 AD711F800D0 for ; Fri, 18 Oct 2019 17:48:36 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz AD711F800D0 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 1iLUUV-0006s0-Io; Fri, 18 Oct 2019 16:48:35 +0100 Received: from ben by rainbowdash.codethink.co.uk with local (Exim 4.92.2) (envelope-from ) id 1iLUUU-0001z4-LO; Fri, 18 Oct 2019 16:48:34 +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: Fri, 18 Oct 2019 16:48:30 +0100 Message-Id: <20191018154833.7560-5-ben.dooks@codethink.co.uk> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191018154833.7560-1-ben.dooks@codethink.co.uk> References: <20191018154833.7560-1-ben.dooks@codethink.co.uk> MIME-Version: 1.0 Cc: linux-kernel@lists.codethink.co.uk, Ben Dooks Subject: [alsa-devel] [PATCH v5 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 Acked-by: Jon Hunter --- 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 fc77e65a3646..3839e3d955a8 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,