From patchwork Mon Jun 13 04:30:51 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krishna Kurapati X-Patchwork-Id: 581905 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 96774C433EF for ; Mon, 13 Jun 2022 04:31:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229499AbiFMEbW (ORCPT ); Mon, 13 Jun 2022 00:31:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54516 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233218AbiFMEbV (ORCPT ); Mon, 13 Jun 2022 00:31:21 -0400 Received: from alexa-out.qualcomm.com (alexa-out.qualcomm.com [129.46.98.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6A9121BE93; Sun, 12 Jun 2022 21:31:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1655094681; x=1686630681; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=kMl99K/M6K5Fjk9nM3Di7tcb4Vm78TI5v+Vb3gBsqpw=; b=mPTbWyn1pAn2+gM8aSSmKLnL5sHEax+6s1jQxDkH3k0FwMsWNQ4TTXNW eTX3nt1G6HyBNqoL/EWFGaLdSvaQtJtg3CJKbEfnK7EXVxjnNTot3Qtce kjGkyvdXj0ufZwNZ6Mvon/zpLTj3XLx1JzDsrhTSKWhD4j6TPfPSq+n3u w=; Received: from ironmsg07-lv.qualcomm.com ([10.47.202.151]) by alexa-out.qualcomm.com with ESMTP; 12 Jun 2022 21:31:20 -0700 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg07-lv.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Jun 2022 21:31:19 -0700 Received: from nalasex01a.na.qualcomm.com (10.47.209.196) by nasanex01c.na.qualcomm.com (10.47.97.222) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Sun, 12 Jun 2022 21:31:19 -0700 Received: from hu-kriskura-hyd.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Sun, 12 Jun 2022 21:31:13 -0700 From: Krishna Kurapati To: Krzysztof Kozlowski , Rob Herring , Andy Gross , Bjorn Andersson , Greg Kroah-Hartman , Felipe Balbi , Stephen Boyd , Doug Anderson , "Matthias Kaehlcke" , Mathias Nyman CC: , , , , , , , , Sandeep Maheswaram , Krishna Kurapati Subject: [v21 2/5] usb: dwc3: core: Host wake up support from system suspend Date: Mon, 13 Jun 2022 10:00:51 +0530 Message-ID: <1655094654-24052-3-git-send-email-quic_kriskura@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1655094654-24052-1-git-send-email-quic_kriskura@quicinc.com> References: <1655094654-24052-1-git-send-email-quic_kriskura@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01a.na.qualcomm.com (10.47.209.196) Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org From: Sandeep Maheswaram Check wakeup-source property for dwc3 core node to set the wakeup capability. Drop the device_init_wakeup call from runtime suspend and resume. If the dwc3 is wakeup capable, don't power down the USB PHY(s). The glue drivers are expected to take care of configuring the additional wakeup settings if needed based on the dwc3 wakeup capability status. In some SOC designs, powering off the PHY is resulting in higher leakage, so this patch save power on such boards. Signed-off-by: Sandeep Maheswaram Signed-off-by: Krishna Kurapati Reviewed-by: Pavankumar Kondeti --- drivers/usb/dwc3/core.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 5734219..5017fc9 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -1782,6 +1782,7 @@ static int dwc3_probe(struct platform_device *pdev) platform_set_drvdata(pdev, dwc); dwc3_cache_hwparams(dwc); + device_init_wakeup(&pdev->dev, of_property_read_bool(dev->of_node, "wakeup-source")); spin_lock_init(&dwc->lock); mutex_init(&dwc->mutex); @@ -1943,7 +1944,7 @@ static int dwc3_suspend_common(struct dwc3 *dwc, pm_message_t msg) dwc3_core_exit(dwc); break; case DWC3_GCTL_PRTCAP_HOST: - if (!PMSG_IS_AUTO(msg)) { + if (!PMSG_IS_AUTO(msg) && !device_can_wakeup(dwc->dev)) { dwc3_core_exit(dwc); break; } @@ -2004,7 +2005,7 @@ static int dwc3_resume_common(struct dwc3 *dwc, pm_message_t msg) spin_unlock_irqrestore(&dwc->lock, flags); break; case DWC3_GCTL_PRTCAP_HOST: - if (!PMSG_IS_AUTO(msg)) { + if (!PMSG_IS_AUTO(msg) && !device_can_wakeup(dwc->dev)) { ret = dwc3_core_init_for_resume(dwc); if (ret) return ret; @@ -2081,8 +2082,6 @@ static int dwc3_runtime_suspend(struct device *dev) if (ret) return ret; - device_init_wakeup(dev, true); - return 0; } @@ -2091,8 +2090,6 @@ static int dwc3_runtime_resume(struct device *dev) struct dwc3 *dwc = dev_get_drvdata(dev); int ret; - device_init_wakeup(dev, false); - ret = dwc3_resume_common(dwc, PMSG_AUTO_RESUME); if (ret) return ret;