From patchwork Wed Oct 23 21:45:51 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pierre-Louis Bossart X-Patchwork-Id: 11207797 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 AE96814E5 for ; Wed, 23 Oct 2019 21:53:01 +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 3EECA21928 for ; Wed, 23 Oct 2019 21:53:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alsa-project.org header.i=@alsa-project.org header.b="bYj14eDr" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3EECA21928 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 6CD871684; Wed, 23 Oct 2019 23:52:09 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 6CD871684 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1571867579; bh=2pvRPXEyBUgagL2EN5N+mlh9hNfjQ9yGtuYRRh0foYw=; h=From:To:Date:In-Reply-To:References:Cc:Subject:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=bYj14eDr/MpjrbG8bJV0G6GIhlHQP1sVKavDpmCEGrv1nUuDu4yZ5O5X9Ucx/Bhhn 3ko2dk+57Zoz8TiJe2TO641BKsWLTMtAq5MMy7lYI/upFfu61H8k5OPxyCm5nmkiZT M5ASEL2W9sDTH0Pc+eay/F1WV9fyv3rg1oLHFKQg= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id EE98CF80676; Wed, 23 Oct 2019 23:46:35 +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 772B5F8065B; Wed, 23 Oct 2019 23:46:33 +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_NONE,SPF_NONE, SURBL_BLOCKED,URIBL_BLOCKED autolearn=disabled version=3.4.0 Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) (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 5CC07F80649 for ; Wed, 23 Oct 2019 23:46:30 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 5CC07F80649 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 23 Oct 2019 14:46:28 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.68,222,1569308400"; d="scan'208";a="196908190" Received: from ayamada-mobl1.gar.corp.intel.com (HELO pbossart-mobl3.intel.com) ([10.254.95.208]) by fmsmga008.fm.intel.com with ESMTP; 23 Oct 2019 14:46:27 -0700 From: Pierre-Louis Bossart To: alsa-devel@alsa-project.org Date: Wed, 23 Oct 2019 16:45:51 -0500 Message-Id: <20191023214601.883-9-pierre-louis.bossart@linux.intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191023214601.883-1-pierre-louis.bossart@linux.intel.com> References: <20191023214601.883-1-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 , Bard liao , Rander Wang Subject: [alsa-devel] [PATCH 08/18] soundwire: intel: reset pm_runtime status during system resume 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" 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. Signed-off-by: Pierre-Louis Bossart --- drivers/soundwire/intel.c | 30 ++++++++++++++++++++++++++++++ include/linux/soundwire/sdw.h | 1 + 2 files changed, 31 insertions(+) diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c index 650581348732..c3cd7d2d5a34 100644 --- a/drivers/soundwire/intel.c +++ b/drivers/soundwire/intel.c @@ -1298,6 +1298,7 @@ static int intel_master_remove(struct sdw_master_device *md) static int intel_suspend(struct device *dev) { + struct sdw_master_device *md = to_sdw_master_device(dev); struct sdw_cdns *cdns = dev_get_drvdata(dev); struct sdw_intel *sdw = cdns_to_intel(cdns); int ret; @@ -1308,6 +1309,20 @@ static int intel_suspend(struct device *dev) return 0; } + if (pm_runtime_status_suspended(dev)) { + dev_dbg(dev, + "%s: pm_runtime status: suspended\n", + __func__); + + /* + * keep track of the state for the system resume, where + * we will need to reset the pm_runtime status to active + */ + md->pm_runtime_suspended = true; + + return 0; + } + ret = sdw_cdns_enable_interrupt(cdns, false); if (ret < 0) { dev_err(dev, "cannot disable interrupts on suspend\n"); @@ -1356,6 +1371,7 @@ static int intel_suspend_runtime(struct device *dev) static int intel_resume(struct device *dev) { + struct sdw_master_device *md = to_sdw_master_device(dev); struct sdw_cdns *cdns = dev_get_drvdata(dev); struct sdw_intel *sdw = cdns_to_intel(cdns); int ret; @@ -1366,6 +1382,20 @@ static int intel_resume(struct device *dev) return 0; } + if (md->pm_runtime_suspended) { + 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); + + md->pm_runtime_suspended = false; + } + ret = intel_init(sdw); if (ret) { dev_err(dev, "%s failed: %d", __func__, ret); diff --git a/include/linux/soundwire/sdw.h b/include/linux/soundwire/sdw.h index d756e41c9466..1950d2b467bd 100644 --- a/include/linux/soundwire/sdw.h +++ b/include/linux/soundwire/sdw.h @@ -577,6 +577,7 @@ struct sdw_master_device { struct device dev; int link_id; struct sdw_md_driver *driver; + bool pm_runtime_suspended; void *pdata; /* core does not touch */ };