From patchwork Tue Jul 21 20:37:13 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bard Liao X-Patchwork-Id: 11677729 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 1B1D0159A for ; Wed, 22 Jul 2020 08:35:21 +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 A511A20787 for ; Wed, 22 Jul 2020 08:35:20 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alsa-project.org header.i=@alsa-project.org header.b="Tg2Pbw+j" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A511A20787 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 27D5B839; Wed, 22 Jul 2020 10:34:33 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 27D5B839 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1595406919; bh=UT0dxBtdbs42HkrpWUydrN24GsLndn+Y1BTEZCJEsb4=; h=From:To:Subject:Date:In-Reply-To:References:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=Tg2Pbw+j++BrEssuyCr+TkoYKshFklo/hb/N8TrpRzf9h96aJaGiIDQaQ95tAcv7m D4GhdbdGfhUwKVJbV0KHjNOWm/yPTcWND3aBcieqZ4a81JPs056Ipp+7eGm61Zqnko D4vhPddDfnV01sfXITYHuYaNtA7YzQgZPaZ/Tgtc= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id CC5EBF802DF; Wed, 22 Jul 2020 10:32:16 +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 F34F5F80150; Wed, 22 Jul 2020 10:32:09 +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 E8069F80150 for ; Wed, 22 Jul 2020 10:31:58 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz E8069F80150 IronPort-SDR: R2E1AhLUL68pooV5BLDehiQ9FLqfGnrDvNpJpVGQxiFVElxXr98+T9bTn7nd6sFXznNKHENnvL MMD8XRufmymA== X-IronPort-AV: E=McAfee;i="6000,8403,9689"; a="149457256" X-IronPort-AV: E=Sophos;i="5.75,381,1589266800"; d="scan'208";a="149457256" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Jul 2020 01:31:56 -0700 IronPort-SDR: HoBiGMxTkR5w+gTTtrGoS3WHuBfWF2u1drAjYZTap4PlqTDfO18L2+smUFiowMVSvIOkTVMrYF N71IfqX/jkBA== X-IronPort-AV: E=Sophos;i="5.75,381,1589266800"; d="scan'208";a="432303204" Received: from bard-ubuntu.sh.intel.com ([10.239.13.33]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Jul 2020 01:31:52 -0700 From: Bard Liao To: alsa-devel@alsa-project.org, vkoul@kernel.org Subject: [PATCH 03/13] soundwire: intel: reset pm_runtime status during system resume Date: Wed, 22 Jul 2020 04:37:13 +0800 Message-Id: <20200721203723.18305-4-yung-chuan.liao@linux.intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200721203723.18305-1-yung-chuan.liao@linux.intel.com> References: <20200721203723.18305-1-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, slawomir.blauciak@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 The system resume does the entire bus re-initialization and brings it to full-power. If the device was pm_runtime suspended, there is no need to run the pm_runtime resume sequence after the system runtime. Follow the documentation from runtime_pm.rst, and conditionally disable, set_active and re-enable the device on system resume. Note that pm_runtime_suspended() is used instead of pm_runtime_status_suspended() so that we can deal with the case where pm_runtime is disabled. Signed-off-by: Pierre-Louis Bossart Signed-off-by: Bard Liao --- drivers/soundwire/intel.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c index ed7163ae5f7a..284e5c9d240a 100644 --- a/drivers/soundwire/intel.c +++ b/drivers/soundwire/intel.c @@ -1433,6 +1433,14 @@ static int intel_suspend(struct device *dev) return 0; } + if (pm_runtime_suspended(dev)) { + dev_dbg(dev, + "%s: pm_runtime status: suspended\n", + __func__); + + return 0; + } + ret = sdw_cdns_enable_interrupt(cdns, false); if (ret < 0) { dev_err(dev, "cannot disable interrupts on suspend\n"); @@ -1493,6 +1501,18 @@ static int intel_resume(struct device *dev) return 0; } + if (pm_runtime_suspended(dev)) { + dev_dbg(dev, + "%s: pm_runtime status was suspended, forcing active\n", + __func__); + + /* follow required sequence from runtime_pm.rst */ + pm_runtime_disable(dev); + pm_runtime_set_active(dev); + pm_runtime_mark_last_busy(dev); + pm_runtime_enable(dev); + } + ret = intel_init(sdw); if (ret) { dev_err(dev, "%s failed: %d", __func__, ret);