From patchwork Fri Jan 10 21:57:27 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pierre-Louis Bossart X-Patchwork-Id: 193911 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=-9.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, 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 463DFC282DD for ; Fri, 10 Jan 2020 22:00:21 +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 C58A620721 for ; Fri, 10 Jan 2020 22:00:20 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alsa-project.org header.i=@alsa-project.org header.b="vf3DuwhL" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C58A620721 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com 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 B58E716C9; Fri, 10 Jan 2020 22:59:28 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz B58E716C9 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1578693618; bh=9XdYkDpMpGuJz6gN8YN8iuEqT9xMihUr1ZQ1Z3FMSOc=; h=From:To:Date:In-Reply-To:References:Cc:Subject:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=vf3DuwhLIsrZvS8jrxyIeBoUFzoq5pRHAAbu/UvlU0q+pUtFjOCtZNxfgWpoEdiXb MEOorRLZ323wlmyer9Ystwtqfdmz8egYYTARG5mZNahCpAlgd6gNsydBu6c+IT+62C 3gvLol8qBMwqup+Tuwe9DX6C9i57v9YPoUDemFuM= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 1FE73F8010B; Fri, 10 Jan 2020 22:57:52 +0100 (CET) Received: by alsa1.perex.cz (Postfix, from userid 50401) id C15E0F8024A; Fri, 10 Jan 2020 22:57:48 +0100 (CET) Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id B5E57F800E4 for ; Fri, 10 Jan 2020 22:57:42 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz B5E57F800E4 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga103.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 10 Jan 2020 13:57:40 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.69,418,1571727600"; d="scan'208";a="218782787" Received: from unknown (HELO pbossart-mobl3.amr.corp.intel.com) ([10.254.183.94]) by fmsmga008.fm.intel.com with ESMTP; 10 Jan 2020 13:57:39 -0800 From: Pierre-Louis Bossart To: alsa-devel@alsa-project.org Date: Fri, 10 Jan 2020 15:57:27 -0600 Message-Id: <20200110215731.30747-3-pierre-louis.bossart@linux.intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200110215731.30747-1-pierre-louis.bossart@linux.intel.com> References: <20200110215731.30747-1-pierre-louis.bossart@linux.intel.com> MIME-Version: 1.0 Cc: Pierre-Louis Bossart , tiwai@suse.de, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, Ranjani Sridharan , vkoul@kernel.org, broonie@kernel.org, srinivas.kandagatla@linaro.org, jank@cadence.com, slawomir.blauciak@intel.com, Sanyog Kale , Rander Wang , Bard liao , Rander Wang Subject: [alsa-devel] [PATCH 2/6] soundwire: cadence_master: clear interrupt status before enabling interrupt 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" From: Rander Wang make sure all interrupts status are cleared before enabling interrupt so that there is no unexpected interrupt triggered. Signed-off-by: Rander Wang Signed-off-by: Pierre-Louis Bossart --- drivers/soundwire/cadence_master.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/soundwire/cadence_master.c b/drivers/soundwire/cadence_master.c index a0ec21b64d42..847b8f5f0a32 100644 --- a/drivers/soundwire/cadence_master.c +++ b/drivers/soundwire/cadence_master.c @@ -856,6 +856,16 @@ int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns, bool state) mask = interrupt_mask; update_masks: + /* clear slave interrupt status before enabling interrupt */ + if (state) { + u32 slave_state; + + slave_state = cdns_readl(cdns, CDNS_MCP_SLAVE_INTSTAT0); + cdns_writel(cdns, CDNS_MCP_SLAVE_INTSTAT0, slave_state); + slave_state = cdns_readl(cdns, CDNS_MCP_SLAVE_INTSTAT1); + cdns_writel(cdns, CDNS_MCP_SLAVE_INTSTAT1, slave_state); + } + cdns_writel(cdns, CDNS_MCP_SLAVE_INTMASK0, slave_intmask0); cdns_writel(cdns, CDNS_MCP_SLAVE_INTMASK1, slave_intmask1); cdns_writel(cdns, CDNS_MCP_INTMASK, mask);