From patchwork Thu Aug 26 04:01:51 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: sugar zhang X-Patchwork-Id: 503028 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=-13.9 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNWANTED_LANGUAGE_BODY, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham 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 5ED97C00143 for ; Thu, 26 Aug 2021 04:02:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4547C610E9 for ; Thu, 26 Aug 2021 04:02:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230300AbhHZEDJ (ORCPT ); Thu, 26 Aug 2021 00:03:09 -0400 Received: from lucky1.263xmail.com ([211.157.147.135]:39218 "EHLO lucky1.263xmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231187AbhHZEDI (ORCPT ); Thu, 26 Aug 2021 00:03:08 -0400 Received: from localhost (unknown [192.168.167.105]) by lucky1.263xmail.com (Postfix) with ESMTP id 14E3AB2D94; Thu, 26 Aug 2021 12:02:19 +0800 (CST) X-MAIL-GRAY: 0 X-MAIL-DELIVERY: 1 X-ADDR-CHECKED4: 1 X-SKE-CHECKED: 1 X-ANTISPAM-LEVEL: 2 Received: from localhost.localdomain (unknown [58.22.7.114]) by smtp.263.net (postfix) whith ESMTP id P21354T140059187595008S1629950526140784_; Thu, 26 Aug 2021 12:02:19 +0800 (CST) X-IP-DOMAINF: 1 X-UNIQUE-TAG: X-RL-SENDER: sugar.zhang@rock-chips.com X-SENDER: zxg@rock-chips.com X-LOGIN-NAME: sugar.zhang@rock-chips.com X-FST-TO: broonie@kernel.org X-RCPT-COUNT: 6 X-SENDER-IP: 58.22.7.114 X-ATTACHMENT-NUM: 0 X-System-Flag: 0 From: Sugar Zhang To: broonie@kernel.org, heiko@sntech.de Cc: linux-rockchip@lists.infradead.org, devicetree@vger.kernel.org, alsa-devel@alsa-project.org, Sugar Zhang Subject: [PATCH v3 05/14] ASoC: rockchip: i2s: Fix concurrency between tx/rx Date: Thu, 26 Aug 2021 12:01:51 +0800 Message-Id: <1629950520-14190-5-git-send-email-sugar.zhang@rock-chips.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1629950441-14118-1-git-send-email-sugar.zhang@rock-chips.com> References: <1629950441-14118-1-git-send-email-sugar.zhang@rock-chips.com> Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org This patch adds lock to fix comcurrency between tx/rx to fix 'rockchip-i2s ff070000.i2s; fail to clear' Considering the situation; tx stream rx stream | | | disable enable | | reset After this patch: lock | tx stream | enable | unlock -------- --------- lock | rx stream | disable | reset | unlock Signed-off-by: Sugar Zhang --- Changes in v3: None Changes in v2: None sound/soc/rockchip/rockchip_i2s.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/sound/soc/rockchip/rockchip_i2s.c b/sound/soc/rockchip/rockchip_i2s.c index 90877e8..0ba728f 100644 --- a/sound/soc/rockchip/rockchip_i2s.c +++ b/sound/soc/rockchip/rockchip_i2s.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include @@ -52,6 +53,9 @@ struct rk_i2s_dev { unsigned int bclk_ratio; }; +/* tx/rx ctrl lock */ +static DEFINE_SPINLOCK(lock); + static int i2s_runtime_suspend(struct device *dev) { struct rk_i2s_dev *i2s = dev_get_drvdata(dev); @@ -93,6 +97,7 @@ static void rockchip_snd_txctrl(struct rk_i2s_dev *i2s, int on) unsigned int val = 0; int retry = 10; + spin_lock(&lock); if (on) { regmap_update_bits(i2s->regmap, I2S_DMACR, I2S_DMACR_TDE_ENABLE, I2S_DMACR_TDE_ENABLE); @@ -133,6 +138,7 @@ static void rockchip_snd_txctrl(struct rk_i2s_dev *i2s, int on) } } } + spin_unlock(&lock); } static void rockchip_snd_rxctrl(struct rk_i2s_dev *i2s, int on) @@ -140,6 +146,7 @@ static void rockchip_snd_rxctrl(struct rk_i2s_dev *i2s, int on) unsigned int val = 0; int retry = 10; + spin_lock(&lock); if (on) { regmap_update_bits(i2s->regmap, I2S_DMACR, I2S_DMACR_RDE_ENABLE, I2S_DMACR_RDE_ENABLE); @@ -180,6 +187,7 @@ static void rockchip_snd_rxctrl(struct rk_i2s_dev *i2s, int on) } } } + spin_unlock(&lock); } static int rockchip_i2s_set_fmt(struct snd_soc_dai *cpu_dai,