From patchwork Thu Jun 2 03:11:55 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krishna Kurapati X-Patchwork-Id: 578452 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 BB7DCCCA473 for ; Thu, 2 Jun 2022 03:12:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233497AbiFBDMt (ORCPT ); Wed, 1 Jun 2022 23:12:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45250 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233490AbiFBDMr (ORCPT ); Wed, 1 Jun 2022 23:12:47 -0400 Received: from alexa-out.qualcomm.com (alexa-out.qualcomm.com [129.46.98.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9D42C2AD9A9; Wed, 1 Jun 2022 20:12:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1654139566; x=1685675566; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=gj7SYDoBtZDEnx2ObhP/ClinHJPnWLTIbNluq8OfXK4=; b=ml4MxQaqDH60+WJsCSSMNA3LramMSdyHfiMf2MlKOt+exawWK9nlBjRu dXgBgw05tpBag7axBbbpUqRvys9HvjCHXWfSDHpNH3lJPKh7OoBKwXJ1g OmZM/HlDTzBd8MwcGWsahxyiu8ImD83iuUY3nK5qPkIyKYeTpJ2pKB04e 8=; Received: from ironmsg07-lv.qualcomm.com ([10.47.202.151]) by alexa-out.qualcomm.com with ESMTP; 01 Jun 2022 20:12:46 -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; 01 Jun 2022 20:12:45 -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; Wed, 1 Jun 2022 20:12:45 -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; Wed, 1 Jun 2022 20:12:39 -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: [PATCH v19 5/5] usb: dwc3: qcom: Keep power domain on to retain controller status Date: Thu, 2 Jun 2022 08:41:55 +0530 Message-ID: <1654139515-8177-6-git-send-email-quic_kriskura@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1654139515-8177-1-git-send-email-quic_kriskura@quicinc.com> References: <1654139515-8177-1-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-usb@vger.kernel.org From: Sandeep Maheswaram If dwc3 is wakeup capable, keep the power domain always ON so that wakeup from system suspend can be supported. Otherwise, keep the power domain ON only during runtime suspend to support wakeup from runtime suspend. Signed-off-by: Sandeep Maheswaram Signed-off-by: Krishna Kurapati --- drivers/usb/dwc3/dwc3-qcom.c | 28 +++++++++++++++++++++------- 1 file changed, 21 insertions(+), 7 deletions(-) diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c index 56ecee0..2f5b5ae 100644 --- a/drivers/usb/dwc3/dwc3-qcom.c +++ b/drivers/usb/dwc3/dwc3-qcom.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include #include @@ -756,12 +757,13 @@ dwc3_qcom_create_urs_usb_platdev(struct device *dev) static int dwc3_qcom_probe(struct platform_device *pdev) { - struct device_node *np = pdev->dev.of_node; - struct device *dev = &pdev->dev; - struct dwc3_qcom *qcom; - struct resource *res, *parent_res = NULL; - int ret, i; - bool ignore_pipe_clk; + struct device_node *np = pdev->dev.of_node; + struct device *dev = &pdev->dev; + struct dwc3_qcom *qcom; + struct resource *res, *parent_res = NULL; + int ret, i; + bool ignore_pipe_clk; + struct generic_pm_domain *genpd; qcom = devm_kzalloc(&pdev->dev, sizeof(*qcom), GFP_KERNEL); if (!qcom) @@ -770,6 +772,8 @@ static int dwc3_qcom_probe(struct platform_device *pdev) platform_set_drvdata(pdev, qcom); qcom->dev = &pdev->dev; + genpd = pd_to_genpd(qcom->dev->pm_domain); + if (has_acpi_companion(dev)) { qcom->acpi_pdata = acpi_device_get_match_data(dev); if (!qcom->acpi_pdata) { @@ -877,7 +881,17 @@ static int dwc3_qcom_probe(struct platform_device *pdev) if (ret) goto interconnect_exit; - device_init_wakeup(&pdev->dev, 1); + if (device_can_wakeup(&qcom->dwc3->dev)) { + /* + * Setting GENPD_FLAG_ALWAYS_ON flag takes care of keeping + * GEMPD on in both RT suspend and System suspend cases. + */ + genpd->flags |= GENPD_FLAG_ALWAYS_ON; + device_init_wakeup(&pdev->dev, true); + } else { + genpd->flags |= GENPD_FLAG_RPM_ALWAYS_ON; + } + qcom->is_suspended = false; pm_runtime_set_active(dev); pm_runtime_enable(dev);