From patchwork Tue Sep 1 15:05:47 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bard Liao X-Patchwork-Id: 11749743 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 161211575 for ; Wed, 2 Sep 2020 03:02:41 +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 A2170206F0 for ; Wed, 2 Sep 2020 03:02:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alsa-project.org header.i=@alsa-project.org header.b="uuoR0amm" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A2170206F0 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 3112117DB; Wed, 2 Sep 2020 05:01:55 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 3112117DB DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1599015759; bh=cwvL6fpVsw91N4gTsw2gj0YznYmTZDpFI+NPA8YiIQM=; h=From:To:Subject:Date:In-Reply-To:References:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=uuoR0ammhQQOjtdQrSBqSLA3PrOdscB99libtNN03905pkjtUGsDySRdGyUObJJyq fmCeg82EH241PQ7zDoM3Apj1BiZVtCOdtV9Dg4dinOqov+U7TweVfr/qQ2pz6cNsXF tRvrNNhvt3mi7beLq7iSM48yD/BkA7tExWcvgRto= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 1A088F80276; Wed, 2 Sep 2020 05:00:30 +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 695C6F802C4; Wed, 2 Sep 2020 04:59:52 +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=1.1 required=5.0 tests=DATE_IN_PAST_06_12, SPF_HELO_NONE,SPF_NONE,URIBL_BLOCKED autolearn=disabled version=3.4.0 Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) (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 11C32F80212 for ; Wed, 2 Sep 2020 04:59:45 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 11C32F80212 IronPort-SDR: Ge3sxsprFbE5j07zJtJ6arMXLX/CKMWrVBTpHZ6aszasMm1n/UVHjTFX96P03VwbvddVmILvTs PB6KGVNAT12w== X-IronPort-AV: E=McAfee;i="6000,8403,9731"; a="156570736" X-IronPort-AV: E=Sophos;i="5.76,381,1592895600"; d="scan'208";a="156570736" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Sep 2020 19:59:45 -0700 IronPort-SDR: e18keY59HGW97Ft5X/2xoE36XMvBjlP/ddYunL2XR657PW4x1FUpeZDw77m3Ebcw6e7ZLRcfJo rM66K9QI9VhQ== X-IronPort-AV: E=Sophos;i="5.76,381,1592895600"; d="scan'208";a="283588053" Received: from bard-ubuntu.sh.intel.com ([10.239.13.33]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Sep 2020 19:59:41 -0700 From: Bard Liao To: alsa-devel@alsa-project.org, vkoul@kernel.org Subject: [PATCH v2 01/10] soundwire: intel: disable shim wake on suspend Date: Tue, 1 Sep 2020 23:05:47 +0800 Message-Id: <20200901150556.19432-2-yung-chuan.liao@linux.intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200901150556.19432-1-yung-chuan.liao@linux.intel.com> References: <20200901150556.19432-1-yung-chuan.liao@linux.intel.com> Cc: pierre-louis.bossart@linux.intel.com, vinod.koul@linaro.org, tiwai@suse.de, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, ranjani.sridharan@linux.intel.com, hui.wang@canonical.com, broonie@kernel.org, srinivas.kandagatla@linaro.org, jank@cadence.com, mengdong.lin@intel.com, sanyog.r.kale@intel.com, rander.wang@linux.intel.com, bard.liao@intel.com 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: Pierre-Louis Bossart If we enabled the clock stop mode and suspend, we need to disable the shim wake. We do so only if the parent is pm_runtime active due to power rail dependencies. GitHub issue: https://github.com/thesofproject/linux/issues/1678 Signed-off-by: Pierre-Louis Bossart Signed-off-by: Bard Liao --- drivers/soundwire/intel.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c index ebca8ced59ec..aa8484366c95 100644 --- a/drivers/soundwire/intel.c +++ b/drivers/soundwire/intel.c @@ -1532,6 +1532,7 @@ static int __maybe_unused intel_suspend(struct device *dev) struct sdw_cdns *cdns = dev_get_drvdata(dev); struct sdw_intel *sdw = cdns_to_intel(cdns); struct sdw_bus *bus = &cdns->bus; + u32 clock_stop_quirks; int ret; if (bus->prop.hw_disabled) { @@ -1543,6 +1544,23 @@ static int __maybe_unused intel_suspend(struct device *dev) if (pm_runtime_suspended(dev)) { dev_dbg(dev, "%s: pm_runtime status: suspended\n", __func__); + clock_stop_quirks = sdw->link_res->clock_stop_quirks; + + if ((clock_stop_quirks & SDW_INTEL_CLK_STOP_BUS_RESET || + !clock_stop_quirks) && + !pm_runtime_suspended(dev->parent)) { + + /* + * if we've enabled clock stop, and the parent + * is still active, disable shim wake. The + * SHIM registers are not accessible if the + * parent is already pm_runtime suspended so + * it's too late to change that configuration + */ + + intel_shim_wake(sdw, false); + } + return 0; }