Received: by 2002:a05:6902:102b:0:0:0:0 with SMTP id x11csp2290739ybt; Tue, 16 Jun 2020 02:05:42 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwGjeJuOXpzSg8SeSMuAeHtu/Is/LixdircWo1qRQPeQvyIZKP7g+z59EqSX0V7WqiWUwzs X-Received: by 2002:a17:906:1116:: with SMTP id h22mr1765370eja.350.1592298341911; Tue, 16 Jun 2020 02:05:41 -0700 (PDT) ARC-Seal: i=2; a=rsa-sha256; t=1592298341; cv=pass; d=google.com; s=arc-20160816; b=d7a1qY2RRUFn+/q47nREEpunoiKi7Sl5wJOwR3TMHJmi0acYPQ7UJ9zo0F7AOixrVq 3YCVtTctj/BEcql3xKWayLSbDO65Hvlh1aCPLDYgMMz14W+sK7MxRhj6j85rlXNbpTvy xDc5DYXUsyPFO4ZBe33Y4K/lYp3RyB3GHe3buWaFoQPfWMtisHBmFDKcfS+3aHXG4Ll+ 9Tpjhu+DjEB+kM4AeBBhNMCXXi/cyymDiHGEeCC5+AUZXDvaWjMMXuqnYrIc+vdD4ivb f9y+P2uNat7yMrbjh71YAi5cH6qv0Dcq9p6mj4+MmFZKm/xcNWZ6qMKUudYnzj4LmbOe zFJA== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:mime-version:content-transfer-encoding :message-id:subject:cc:to:from:date:dkim-signature; bh=5LIPuUCQfNj+KHiK9rx5zNCPa/+ndf2ma/xPZg6UMoc=; b=cgKhTKFfemiCfHgOupC0jeXmJTKqhso5uK8/Q3mrLbhoN1RRq5+Urh/+OmDvpR/vym 3yQiT+c2wySKnY90IdoKUfOZdwB1Lr4hcrb/rnWDgJVGhahKj13R+4vh+4UznpHPDw04 pwfg+nwFbBABmyioMfCLL7dA1bghXBQUD82FIj0JVBZZpJa04xbVJrzRXe0m6t2DpFCn oBHZGxdUpVy0yq1mYpocsDcoNdZYR+kjbz0FPFciOqmby160pjYTC+dJIXnedA6re5st U4/g9wdwzeKDZSGYMnlpwam4lFQ+QIg8ZNvQFEivR5Fhyt4CCfaSvdHcj9+JiJ0Z8VN6 Vc2g== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@Synaptics.onmicrosoft.com header.s=selector2-Synaptics-onmicrosoft-com header.b=BL1D7zf5; arc=pass (i=1 spf=pass spfdomain=synaptics.com dkim=pass dkdomain=synaptics.com dmarc=pass fromdomain=synaptics.com); spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id q5si2219578ejb.751.2020.06.16.02.05.17; Tue, 16 Jun 2020 02:05:41 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@Synaptics.onmicrosoft.com header.s=selector2-Synaptics-onmicrosoft-com header.b=BL1D7zf5; arc=pass (i=1 spf=pass spfdomain=synaptics.com dkim=pass dkdomain=synaptics.com dmarc=pass fromdomain=synaptics.com); spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726805AbgFPJDZ (ORCPT + 99 others); Tue, 16 Jun 2020 05:03:25 -0400 Received: from mail-co1nam11on2067.outbound.protection.outlook.com ([40.107.220.67]:6144 "EHLO NAM11-CO1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725710AbgFPJDY (ORCPT ); Tue, 16 Jun 2020 05:03:24 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=MD0AtnFlewPij0ASAWRT5JIXp0anEdFNgzLycFRyuHQkxoUaUgjKtL4Ze8Fs+vdXyqpSA5XUYP3DaAD7/OrHFuAYytVVglbmJcNWmFXZdaBkOr3Er/EacRHHA2eKl3mSWgcIGNmYmD+pw3+H3DI0RczQXu3Csjpi7Z8JJWCQfchhQWXRJTAvGVTSgMPdbmbdU/fMNIlW+L+d7UWrAGMN/fpVwo+hcbHwRJyGG2ubE/ASsvluxOWCHOMrkNrj9hbMvzGk0hVSMatMf2ExAG8zzeI+NQ6Ca2OaoaiNWHLekDp39Yv0clnkjBlv9/luJKixzSfT40RmS9od2+O3gFrkTQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=5LIPuUCQfNj+KHiK9rx5zNCPa/+ndf2ma/xPZg6UMoc=; b=QSzrnRRiQhMP8tZtlxm4G7QUx0LfnikYw4MZWjqH74QiAIiifrOz190EzMEGIOGddkHztZ/IXFHvaEgkD8ZBAsV8tp6v/BrCXXhtqZYcEdkRg0IGHG0597dsHg3Dp5tR68+ddAl8rlLXALGjqb5wGm6i0f9l6A0kvuk1K/mrrKgwvyJ/A9H6E8LaF+3ic8xVM1JC1tgTAs9BZhNO/3/9yN+3jSGJgC33xPZ4rMJlwV381ibCPIpZ7sgqWw4j9SQJLMwJTm+Qr+MmXTIh8X4tBqp6xLw8UNXxBRv8eGleBRU+VFo9uyOkacl+kCci62CcJr00Vc8Vth2YuLUL4C3TXg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=synaptics.com; dmarc=pass action=none header.from=synaptics.com; dkim=pass header.d=synaptics.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Synaptics.onmicrosoft.com; s=selector2-Synaptics-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=5LIPuUCQfNj+KHiK9rx5zNCPa/+ndf2ma/xPZg6UMoc=; b=BL1D7zf5hbwsdeUFXvtD3TNFE40nfxcHX4lnSSa36YI2y+PAcCBljd9M+gbM7rBXU8AU+FhPXM3l4nVCNYkSHPpXKrdoU7nCQFC0ZjmjnzFsWon6aCom6cc4keuRxHOkAKAA+diOYiZjhxBsYMESCWypzHer3WHTrPPaashd8Mw= Authentication-Results: synopsys.com; dkim=none (message not signed) header.d=none;synopsys.com; dmarc=none action=none header.from=synaptics.com; Received: from BYAPR03MB3573.namprd03.prod.outlook.com (2603:10b6:a02:ae::15) by BYAPR03MB4792.namprd03.prod.outlook.com (2603:10b6:a03:135::24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3088.18; Tue, 16 Jun 2020 09:03:21 +0000 Received: from BYAPR03MB3573.namprd03.prod.outlook.com ([fe80::d1ae:8ea7:ea:8998]) by BYAPR03MB3573.namprd03.prod.outlook.com ([fe80::d1ae:8ea7:ea:8998%7]) with mapi id 15.20.3088.028; Tue, 16 Jun 2020 09:03:21 +0000 Date: Tue, 16 Jun 2020 17:03:11 +0800 From: Jisheng Zhang To: Minas Harutyunyan , Greg Kroah-Hartman Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [Query]usb: dwc2: suspend/resume support for DWC2_POWER_DOWN_PARAM_NONE case Message-ID: <20200616164712.67bf105c@xhacker.debian> X-Mailer: Claws Mail 3.17.5 (GTK+ 2.24.32; x86_64-pc-linux-gnu) Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-ClientProxiedBy: TY2PR02CA0059.apcprd02.prod.outlook.com (2603:1096:404:e2::23) To BYAPR03MB3573.namprd03.prod.outlook.com (2603:10b6:a02:ae::15) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from xhacker.debian (124.74.246.114) by TY2PR02CA0059.apcprd02.prod.outlook.com (2603:1096:404:e2::23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3088.21 via Frontend Transport; Tue, 16 Jun 2020 09:03:19 +0000 X-Mailer: Claws Mail 3.17.5 (GTK+ 2.24.32; x86_64-pc-linux-gnu) X-Originating-IP: [124.74.246.114] X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: b6658c7b-9af4-462b-413b-08d811d41e37 X-MS-TrafficTypeDiagnostic: BYAPR03MB4792: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:6108; X-Forefront-PRVS: 04362AC73B X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 0qyQ6EsN/fVnp0YS4zkIdX4K4ck1rOvkzemdh9rpWi0lm2PQDwNFvDh1GnW4SUjdZ5ZHuqK33Q6Z5/OJ8l9rn03W5H+6x0wLhmDwmKui6iVbFpdLay0hcS9O4Aw3xFaQxJ7VYc035R1oYCOLKhLQquueW5Hqqk07fXX8HuCFsSyZNPMQVknB6SfjV4SjMeoh6/vCsrAFM42kJeXW1AKMfeaC9CsWvmM0iaL50Tu3Iqm04Fgw8m/uqUV0we5wT1Vl+uxdq/p4cll7Dmde482fJG380dZKw1fV9OhAbsp6a59DtKfg3VoWQMoeb7NpmeePZjceUR9cp+oGArSppQS7Og== X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:BYAPR03MB3573.namprd03.prod.outlook.com;PTR:;CAT:NONE;SFTY:;SFS:(136003)(346002)(376002)(396003)(39860400002)(366004)(316002)(2906002)(6506007)(66556008)(66946007)(66476007)(26005)(15650500001)(16526019)(4326008)(186003)(55016002)(7696005)(52116002)(956004)(86362001)(9686003)(6666004)(478600001)(1076003)(5660300002)(4744005)(110136005)(83380400001)(8676002)(8936002);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: synaptics.com X-MS-Exchange-CrossTenant-Network-Message-Id: b6658c7b-9af4-462b-413b-08d811d41e37 X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Jun 2020 09:03:21.4189 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 335d1fbc-2124-4173-9863-17e7051a2a0e X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: m4QZ32oArkmgJDBX8ghu0IHRvyGgKbbGCITuKwOMFdRedFUMu1F7k4FV/VLfugyKq9bljBD9OoTB3pdfMjKMOA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR03MB4792 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, After reading current dwc2 code, I got an impression that resume from suspend to ram isn't supported for DWC2_POWER_DOWN_PARAM_NONE case, right? In fact we do see usb device can't resume properly with DWC2_POWER_DOWN_PARAM_NONE case. If the impression is true, what's the proper technical direction? Add dwc2_host_enter_suspend() as dwc2_host_enter_hibernation() and dwc2_host_exit_suspend() as dwc2_host_exit_hibernation()? Thanks in advance, Jisheng