From patchwork Fri May 27 06:49:06 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Prashanth K X-Patchwork-Id: 12863037 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 9A988C433EF for ; Fri, 27 May 2022 06:49:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344186AbiE0GtV (ORCPT ); Fri, 27 May 2022 02:49:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33320 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344155AbiE0GtP (ORCPT ); Fri, 27 May 2022 02:49:15 -0400 Received: from alexa-out-sd-01.qualcomm.com (alexa-out-sd-01.qualcomm.com [199.106.114.38]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EBA6BED8D5; Thu, 26 May 2022 23:49:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1653634155; x=1685170155; h=from:to:cc:subject:date:message-id:mime-version; bh=0t1DGejBLqrGuaKm5GDs3t3WPZiALR9whEGvT3f5TaU=; b=w4rrdtanXzZfPVL+EAnqPUVXpbR6bP61HNJ0fcPvu9vClxDNgplGmQCF YXe/B8C6bwJRN+5L59qFDZZ1HELxKjzN/pA9I+jN9cVvQPmR+Sl6a1dC6 5hGViQXaaH6YRlqa9WY9tzd/tMjRl5IjHkdvMr2lzGVjbsiUkV/Pm2e8B M=; Received: from unknown (HELO ironmsg03-sd.qualcomm.com) ([10.53.140.143]) by alexa-out-sd-01.qualcomm.com with ESMTP; 26 May 2022 23:49:14 -0700 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg03-sd.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 May 2022 23:49:14 -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; Thu, 26 May 2022 23:49:13 -0700 Received: from hu-prashk-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; Thu, 26 May 2022 23:49:11 -0700 From: Prashanth K To: Matthias Brugger , Greg Kroah-Hartman CC: Pavankumar Kondeti , Pratham Pratap , , , Prashanth K Subject: [PATCH] usb: common: usb-conn-gpio: Allow wakeup from system suspend Date: Fri, 27 May 2022 12:19:06 +0530 Message-ID: <1653634146-12215-1-git-send-email-quic_prashk@quicinc.com> X-Mailer: git-send-email 2.7.4 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 Currently the VBUS/ID detection interrupts are disabled during system suspend. So the USB cable connect/disconnect event can't wakeup the system from low power mode. To allow this, we keep these interrupts enabled and configure them as wakeup capable. This behavior can be controlled through device wakeup source policy by the user space. Signed-off-by: Prashanth K --- drivers/usb/common/usb-conn-gpio.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/usb/common/usb-conn-gpio.c b/drivers/usb/common/usb-conn-gpio.c index 395f9bb..b39c9f1c 100644 --- a/drivers/usb/common/usb-conn-gpio.c +++ b/drivers/usb/common/usb-conn-gpio.c @@ -257,6 +257,7 @@ static int usb_conn_probe(struct platform_device *pdev) } platform_set_drvdata(pdev, info); + device_set_wakeup_capable(&pdev->dev, true); /* Perform initial detection */ usb_conn_queue_dwork(info, 0); @@ -286,6 +287,14 @@ static int __maybe_unused usb_conn_suspend(struct device *dev) { struct usb_conn_info *info = dev_get_drvdata(dev); + if (device_may_wakeup(dev)) { + if (info->id_gpiod) + enable_irq_wake(info->id_irq); + if (info->vbus_gpiod) + enable_irq_wake(info->vbus_irq); + return 0; + } + if (info->id_gpiod) disable_irq(info->id_irq); if (info->vbus_gpiod) @@ -300,6 +309,14 @@ static int __maybe_unused usb_conn_resume(struct device *dev) { struct usb_conn_info *info = dev_get_drvdata(dev); + if (device_may_wakeup(dev)) { + if (info->id_gpiod) + disable_irq_wake(info->id_irq); + if (info->vbus_gpiod) + disable_irq_wake(info->vbus_irq); + return 0; + } + pinctrl_pm_select_default_state(dev); if (info->id_gpiod)