From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.0 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, MSGID_FROM_MTA_HEADER,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7DF90C433E0 for ; Wed, 1 Jul 2020 06:13:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4FC7D2074D for ; Wed, 1 Jul 2020 06:13:23 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=NXP1.onmicrosoft.com header.i=@NXP1.onmicrosoft.com header.b="U5/C3xh0" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727051AbgGAGNW (ORCPT ); Wed, 1 Jul 2020 02:13:22 -0400 Received: from mail-eopbgr30050.outbound.protection.outlook.com ([40.107.3.50]:52900 "EHLO EUR03-AM5-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726615AbgGAGNV (ORCPT ); Wed, 1 Jul 2020 02:13:21 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=JHEbLntu97Cgc3j7wlsZabxCCKNpPaQdLH7vmi9hKs4C+s1tffxc9cpgvFSiwQX0GN3iABRP7VsRX36gGfhib8jVXzyDT5i7YCNhgNREXUqPY9fsHZZ2rzixOTzDjm5Ldvpdg3Zij7nIN8oAlxccLiMxPsl59Q+4Y2NFPfZF55dPZvrV3tMNxRbpw3t5UMsrjNjl1shzZyz+cLQ+TRp5yLJL7MdXYQu6BXqIDxKZhEOnf9mKOXR1B9xSg0q9nLp672ieBoAAWrPNMSFw+ItVzzch3P7eeXDyzRAc4GVp2ZuXgAkKiobHAgkrA5PXKZPHjOVM2qWDZQHojPyDDUZIkA== 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=sUjv+vktLgapsb4KaKUbBlwzkLzBzn1qoBM+j3UNPxY=; b=KcqafK+WeVVLiMVgqXTF6h6ylQ6lDyYmo3wykP+695I8xt8x/xrffbZESaxFAMg2z/x83iqd6QJwNw6KRV9zMn2lR4Adp0bt4q7F2QW7/fbbz6cG/CiHR0Uf8y6li5nEEMRIocQ4Qf4TEkg9S8mvKvvgjhydUSfUV0oECbC5u0lKJ07K9QWTXRLdK0C6W0Xzyt8o9oTzzMbcxwlzWvYuvfKQmcOow9fZldy8FjDzp8b3eMgxHnbze+VclCrw0rKAida+HeGk93YWC/rh9/gKk+O653Onxyy6O7fKdLqsmWxtqm4KHuT3Popr9Z/aJlEw7ExNP77m9rT1Fe79nNZ9fA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=oss.nxp.com; dmarc=pass action=none header.from=oss.nxp.com; dkim=pass header.d=oss.nxp.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=NXP1.onmicrosoft.com; s=selector2-NXP1-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=sUjv+vktLgapsb4KaKUbBlwzkLzBzn1qoBM+j3UNPxY=; b=U5/C3xh0FHIu/0yAoWSpb8iFtnjJqICjHpoFlYivmkUfkalDlhLc+nPx28kfy+oeLMHIyv+vvvX6+OAdoliJ13wGe9nbQYZQyFfVSW8n5dp+iBpqwVJlQ7GQZuWBNsyOPiYjZvkXJHzR27dGoPj42eUjJLKuIlqTkRETsnwbKwg= Authentication-Results: arm.com; dkim=none (message not signed) header.d=none;arm.com; dmarc=none action=none header.from=oss.nxp.com; Received: from AM0PR04MB5636.eurprd04.prod.outlook.com (2603:10a6:208:130::22) by AM0PR04MB6066.eurprd04.prod.outlook.com (2603:10a6:208:13e::12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3131.25; Wed, 1 Jul 2020 06:13:17 +0000 Received: from AM0PR04MB5636.eurprd04.prod.outlook.com ([fe80::7dda:a30:6b25:4d45]) by AM0PR04MB5636.eurprd04.prod.outlook.com ([fe80::7dda:a30:6b25:4d45%7]) with mapi id 15.20.3131.026; Wed, 1 Jul 2020 06:13:17 +0000 From: Calvin Johnson To: Jeremy Linton , Russell King - ARM Linux admin , Jon , Cristi Sovaiala , Ioana Ciornei , Andrew Lunn , Andy Shevchenko , Florian Fainelli , Madalin Bucur Cc: netdev@vger.kernel.org, linux-acpi@vger.kernel.org, linux.cj@gmail.com, Calvin Johnson , "David S. Miller" , Heiner Kallweit , Jakub Kicinski , linux-kernel@vger.kernel.org Subject: [net-next PATCH v2 1/3] net: phy: introduce find_phy_device() Date: Wed, 1 Jul 2020 11:42:31 +0530 Message-Id: <20200701061233.31120-2-calvin.johnson@oss.nxp.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200701061233.31120-1-calvin.johnson@oss.nxp.com> References: <20200701061233.31120-1-calvin.johnson@oss.nxp.com> Content-Type: text/plain X-ClientProxiedBy: SG2PR06CA0230.apcprd06.prod.outlook.com (2603:1096:4:ac::14) To AM0PR04MB5636.eurprd04.prod.outlook.com (2603:10a6:208:130::22) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from lsv03152.swis.in-blr01.nxp.com (14.142.151.118) by SG2PR06CA0230.apcprd06.prod.outlook.com (2603:1096:4:ac::14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3153.20 via Frontend Transport; Wed, 1 Jul 2020 06:13:13 +0000 X-Mailer: git-send-email 2.17.1 X-Originating-IP: [14.142.151.118] X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-HT: Tenant X-MS-Office365-Filtering-Correlation-Id: a73cf0e4-0900-4c91-b989-08d81d85d852 X-MS-TrafficTypeDiagnostic: AM0PR04MB6066: X-MS-Exchange-SharedMailbox-RoutingAgent-Processed: True X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:5516; X-Forefront-PRVS: 04519BA941 X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: uu1oS4my4DSyZWAZeloPw/DPKwPPu+BKJrNRK6ivSJ+C3pRSRaBXoodj+XA+yZpXftuY6/4Zw0qMULx0yTzFcGuOeU0GcS9xr3O4aw+jKBlvvF2B0eNGV2kdlkc7SswWu6ImzqqaUPu3xBDbcTqUlGUFIfqkCRMbGThAK7crzQx1VWOzQNcIvBYQiePDu7VGgmwOn2MrVRlN0Y/3Oq5/F8vdD7c8eXspiWivl7XM+J25Yriqf2cSutzQvWD0IuGNuH7Ch4qw2zEveBCUUxVbFjViLreU3n2eKh6c13XbzktTRm7seqKr6CrOqVz/EYQ+86uaNMPVBaetNYiQuAmzK0vnfzbREuqpjglkldeL4nXAj7FaX0AImYQmjSiE23xG X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:AM0PR04MB5636.eurprd04.prod.outlook.com;PTR:;CAT:NONE;SFTY:;SFS:(4636009)(396003)(39860400002)(376002)(346002)(366004)(136003)(2906002)(6666004)(4326008)(7416002)(6512007)(316002)(110136005)(54906003)(86362001)(1006002)(8676002)(478600001)(66556008)(55236004)(8936002)(5660300002)(186003)(26005)(52116002)(6506007)(44832011)(16526019)(2616005)(956004)(66946007)(66476007)(1076003)(6486002)(6636002)(110426005);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: oss.nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: a73cf0e4-0900-4c91-b989-08d81d85d852 X-MS-Exchange-CrossTenant-AuthSource: AM0PR04MB5636.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 01 Jul 2020 06:13:17.1890 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: cFymC/F81otse+m7DIuKRc4uLhU7rSK16pxT6aaUuYpq6V13XnK8N+M77fIUUXFvaf5SpLJsGjtoC4W2lq8GHA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR04MB6066 Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org The PHYs on a mdiobus are probed and registered using mdiobus_register(). Later, for connecting these PHYs to MAC, the PHYs registered on the mdiobus have to be referenced. For each MAC node, a property "mdio-handle" is used to reference the MDIO bus on which the PHYs are registered. On getting hold of the MDIO bus, use find_phy_device() to get the PHY connected to the MAC. Signed-off-by: Calvin Johnson --- Changes in v2: None drivers/net/phy/phy_device.c | 25 +++++++++++++++++++++++++ include/linux/phy.h | 1 + 2 files changed, 26 insertions(+) diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c index eb1068a77ce1..417000197ab1 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -25,6 +25,7 @@ #include #include #include +#include #include #include #include @@ -966,6 +967,30 @@ struct phy_device *phy_find_first(struct mii_bus *bus) } EXPORT_SYMBOL(phy_find_first); +struct phy_device *find_phy_device(struct fwnode_handle *fwnode) +{ + struct fwnode_handle *fwnode_mdio; + struct platform_device *pdev; + struct mii_bus *mdio; + struct device *dev; + int addr; + int err; + + fwnode_mdio = fwnode_find_reference(fwnode, "mdio-handle", 0); + dev = bus_find_device_by_fwnode(&platform_bus_type, fwnode_mdio); + if (IS_ERR_OR_NULL(dev)) + return NULL; + pdev = to_platform_device(dev); + mdio = platform_get_drvdata(pdev); + + err = fwnode_property_read_u32(fwnode, "phy-channel", &addr); + if (err < 0 || addr < 0 || addr >= PHY_MAX_ADDR) + return NULL; + + return mdiobus_get_phy(mdio, addr); +} +EXPORT_SYMBOL(find_phy_device); + static void phy_link_change(struct phy_device *phydev, bool up) { struct net_device *netdev = phydev->attached_dev; diff --git a/include/linux/phy.h b/include/linux/phy.h index 101a48fa6750..ef9d7ca5d7ba 100644 --- a/include/linux/phy.h +++ b/include/linux/phy.h @@ -1245,6 +1245,7 @@ int phy_sfp_probe(struct phy_device *phydev, struct phy_device *phy_attach(struct net_device *dev, const char *bus_id, phy_interface_t interface); struct phy_device *phy_find_first(struct mii_bus *bus); +struct phy_device *find_phy_device(struct fwnode_handle *fwnode); int phy_attach_direct(struct net_device *dev, struct phy_device *phydev, u32 flags, phy_interface_t interface); int phy_connect_direct(struct net_device *dev, struct phy_device *phydev, -- 2.17.1