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=-16.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,MSGID_FROM_MTA_HEADER,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 25E3EC433DB for ; Thu, 18 Feb 2021 05:33:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C412564E33 for ; Thu, 18 Feb 2021 05:33:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229765AbhBRFd2 (ORCPT ); Thu, 18 Feb 2021 00:33:28 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43752 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230427AbhBRFaw (ORCPT ); Thu, 18 Feb 2021 00:30:52 -0500 Received: from EUR04-HE1-obe.outbound.protection.outlook.com (mail-he1eur04on0603.outbound.protection.outlook.com [IPv6:2a01:111:f400:fe0d::603]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6DA5BC0613D6; Wed, 17 Feb 2021 21:30:02 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=CCYcdK5mYmTbExkhF/R2bFN7QfBQGYvAFxvpSEjFRiQWQdeLByWHCru4YyiKh5Z70uFEGKbhnNiecBrNq3EUkdGkFbwCu8PP/yAG+xbZ0M5xyui7vYZDvDZb+37LuYl6EpnTbfitURuoCIixmTbZmjg0i1qIEbCePB7ms/F3EKFRnm53KIsAYLjGzFjI16rFCsOXDcIhpqrU9+5K+9+diNQOkXUEKSWDIxAm6wnnSi6RXkJPIIsTpgxwjBkPs11mMnN15LMNvPcEeb9N1N4wL7NdXcUeuTfvuTE9SiumxqFKEHniI68Fvl6oEP8yJzQa4e5nI8Re6OaqG2jg0K1jeA== 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=15LjNqafMe9XbMRxl6wCPfbkpsrCCaKoRRcVNTMs5uo=; b=SdrnS5g3as5BXrgvyYQ8x4y4K9Ao3bGXXrZC9PRa56taHdiVEtmVSnK3n1RczGaor+HeBchdpuB0BxTaoz0YeTbKaKwVO3oG4ee4ttGp1AWxO5AO1EncAl1xRtnOtTgjOefnmUYacUhhjAoWRUOxC9vCn29f2IuA4jPr8vLHkkvpKWpqVVotrAxBIZpkUaPtfoUXmoI0a+fdii3rm7KwKvM6f2qeyoTytOWW0zojOhvka7sh4FLmBYyshX5fq5ebUaBmBk+9GoPf6o8kewY7ofrNRhvWGjnc1KhRUwvO0nE8BO/TnKJRCi1ToAxdK3KFN58AU6uq7QnvfOJ/n7xDkg== 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=15LjNqafMe9XbMRxl6wCPfbkpsrCCaKoRRcVNTMs5uo=; b=WsLf6zGzM9xGl+iQ8pbkMGnNMRZj0+vtEM0z9DHgfIUjauhJ6foc3anOWN7lLj/UrfANRRDLruoKf3etL61ouPO+nW4evyKYAt+YWXO7y4c4/XKm+8JLjhToSnyRsrLSgzOfJZAWHxA8nbxH5yKvsSjOJxRlLv3qMoRx5u6W4Pw= 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 AM8PR04MB7730.eurprd04.prod.outlook.com (2603:10a6:20b:242::11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3868.27; Thu, 18 Feb 2021 05:28:35 +0000 Received: from AM0PR04MB5636.eurprd04.prod.outlook.com ([fe80::e90e:b1d6:18a2:2d42]) by AM0PR04MB5636.eurprd04.prod.outlook.com ([fe80::e90e:b1d6:18a2:2d42%6]) with mapi id 15.20.3846.042; Thu, 18 Feb 2021 05:28:35 +0000 From: Calvin Johnson To: Grant Likely , "Rafael J . Wysocki" , Jeremy Linton , Andrew Lunn , Andy Shevchenko , Florian Fainelli , Russell King - ARM Linux admin , Cristi Sovaiala , Florin Laurentiu Chiculita , Ioana Ciornei , Madalin Bucur , Heikki Krogerus , Marcin Wojtas , Pieter Jansen Van Vuuren , Jon , Saravana Kannan , Randy Dunlap Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org, linux-acpi@vger.kernel.org, Laurentiu Tudor , Diana Madalina Craciun , linux-arm-kernel@lists.infradead.org, linux.cj@gmail.com, Calvin Johnson , "David S. Miller" , Heiner Kallweit , Jakub Kicinski Subject: [net-next PATCH v6 10/15] net: mdio: Add ACPI support code for mdio Date: Thu, 18 Feb 2021 10:56:49 +0530 Message-Id: <20210218052654.28995-11-calvin.johnson@oss.nxp.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210218052654.28995-1-calvin.johnson@oss.nxp.com> References: <20210218052654.28995-1-calvin.johnson@oss.nxp.com> Content-Type: text/plain X-Originating-IP: [14.142.151.118] X-ClientProxiedBy: SG2PR02CA0051.apcprd02.prod.outlook.com (2603:1096:4:54::15) 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 SG2PR02CA0051.apcprd02.prod.outlook.com (2603:1096:4:54::15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3868.27 via Frontend Transport; Thu, 18 Feb 2021 05:28:29 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-HT: Tenant X-MS-Office365-Filtering-Correlation-Id: 5529b96b-9b9a-433e-3d38-08d8d3ce09fe X-MS-TrafficTypeDiagnostic: AM8PR04MB7730: X-MS-Exchange-SharedMailbox-RoutingAgent-Processed: True X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:7691; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 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;SFS:(4636009)(396003)(376002)(346002)(366004)(39860400002)(136003)(26005)(8936002)(52116002)(16526019)(921005)(478600001)(1076003)(6486002)(8676002)(55236004)(83380400001)(5660300002)(186003)(44832011)(110136005)(6512007)(956004)(54906003)(316002)(66946007)(2906002)(2616005)(1006002)(66476007)(86362001)(7416002)(6506007)(6666004)(4326008)(66556008)(110426009);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData: =?us-ascii?Q?MEjVIl7JMaBRiegK/lMa5VNc6Xjqw3FKtUQ9GJjHbfmCiqTwj5hzKlp2ft6U?= =?us-ascii?Q?x2oujQ/BLpwThh1U42c3l2kWSITqnegzQxAy4JZvQqjMUfJuI/2XBKBO+Ft8?= =?us-ascii?Q?PyecRkqX3OEN4KtMJbzff3dYyYZFAVappM5E+uj/bWRkYtUidlPtBh43BA/T?= =?us-ascii?Q?LdHEG5dro+rpyPgxtJaacKeAuoq8l8qoEC9A8NxtXQPyxxdrPjt+HeNbctgV?= =?us-ascii?Q?ORoPNkEM7/Av+yMBxCOXFHSCBKRbm2KEQkyYJ4c+faE6VEJbGtwm0Di7CnBd?= =?us-ascii?Q?bKFvff4HBAzRDOMry827zGJQNv9qRbuoBy1J7B0+t4SG8kAF/aPN3LdX3+Dv?= =?us-ascii?Q?27391r2TC9smPZsSpbQMUHbId+Doj2GE/skUIBv/L++DJmnjBLe5FmDIDZDz?= =?us-ascii?Q?dr//AR06J8hgso10PszkTw9WrrQdRj/Wk+0gt1B2P2M5GG9/A6R81MATDye8?= =?us-ascii?Q?pBEaCii0TIvMBQcDamGFA/JT45SK35pa5PQUjuE1Vdma3d7XQwn9N2S2c+xK?= =?us-ascii?Q?xXCsYssRfOvP+0CPaABmE39Xa/qkD5x912awxh8jFlvgSGhftPkp6ejMngjv?= =?us-ascii?Q?UpAk5PxuTzm/AZEuDenvAQbk83E9CzOmGdOUd3NCD4vVMNBmBQamPlVNROJ5?= =?us-ascii?Q?3sxGmd0CvVxxar9Jsme+qI4oFF6pFhQcn+NUB68JwsdcfVe1NiG9KoNXVG5r?= =?us-ascii?Q?QXga7zkXpXOsOEahPyp7YCrz/fYMcUdQzTSCKgslSB2BTM1McQ3yuYupGWvV?= =?us-ascii?Q?V0YoIFs17t/TE2MrUUc1+e6Pat80sRmG9yWGX4yJB9oPKIERXTqpu5Gh1J6x?= =?us-ascii?Q?h8NXTiAYvYoCVRNHHxMn1BdpLIGLzzIoZGf4O0hgGwR8ELqCgJZePbP16wzC?= =?us-ascii?Q?rxq6NGOSHaBzJ0lekTGZ9GOm8ehg5KuW4vtMAKb0HLCLjAP1QbXFP+5Ew7gf?= =?us-ascii?Q?7nXdWCB4iLOmlAfxYOGVil3PLkuwN7F6rNOeWHmb1mK8o8+A2e4Cwqn9aCL1?= =?us-ascii?Q?vC9LpYBKmDVJzjRiL7oy97HYax0UXrXqJujBBbklLHc3xymKBBz1wd37WEXM?= =?us-ascii?Q?6VY+cU4XK1KeYj16tPjrTW4eLD9oqOUV72yGnIWDh+L96YDcGleBas3JdRGu?= =?us-ascii?Q?qdRilr1DiiKSUzke2lre0W1bFLODlUcW2y4mjrA31+m4+D4xm7ZMzcu8mUm9?= =?us-ascii?Q?I4qnAw5NFiQd4wLc2g0K7GozGGVuJDtqYyfDH/JLR4ePbPjEAF/erjd81XyT?= =?us-ascii?Q?MUSu1Aqm4LZ9GyRq46rs1RapCVEnNF3t245L59oft0RPJSjaUEZ4LxqeUSm4?= =?us-ascii?Q?u6s2oEuY9ldmKm4WfzeJM+nK?= X-OriginatorOrg: oss.nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 5529b96b-9b9a-433e-3d38-08d8d3ce09fe X-MS-Exchange-CrossTenant-AuthSource: AM0PR04MB5636.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 18 Feb 2021 05:28:35.8734 (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: i0SY10Xk5ry2o5/Mt8hg91seyaH8TuDmfOjBo9O0M2OhGjkn7QNYSXq9IVT7kDY39hinVtGGI3qJUnRYkC360Q== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM8PR04MB7730 Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org Define acpi_mdiobus_register() to Register mii_bus and create PHYs for each ACPI child node. Signed-off-by: Calvin Johnson --- Changes in v6: - use GENMASK() and ACPI_COMPANION_SET() - some cleanup - remove unwanted header inclusion Changes in v5: - add missing MODULE_LICENSE() - replace fwnode_get_id() with OF and ACPI function calls Changes in v4: None Changes in v3: None Changes in v2: None MAINTAINERS | 1 + drivers/net/mdio/Kconfig | 7 +++++ drivers/net/mdio/Makefile | 1 + drivers/net/mdio/acpi_mdio.c | 51 ++++++++++++++++++++++++++++++++++++ include/linux/acpi_mdio.h | 25 ++++++++++++++++++ 5 files changed, 85 insertions(+) create mode 100644 drivers/net/mdio/acpi_mdio.c create mode 100644 include/linux/acpi_mdio.h diff --git a/MAINTAINERS b/MAINTAINERS index 1a219335efe0..41d16d77b6cf 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -6680,6 +6680,7 @@ F: Documentation/devicetree/bindings/net/mdio* F: Documentation/devicetree/bindings/net/qca,ar803x.yaml F: Documentation/networking/phy.rst F: drivers/net/mdio/ +F: drivers/net/mdio/acpi_mdio.c F: drivers/net/mdio/of_mdio.c F: drivers/net/pcs/ F: drivers/net/phy/ diff --git a/drivers/net/mdio/Kconfig b/drivers/net/mdio/Kconfig index a10cc460d7cf..df6bb7837d6a 100644 --- a/drivers/net/mdio/Kconfig +++ b/drivers/net/mdio/Kconfig @@ -27,6 +27,13 @@ config OF_MDIO help OpenFirmware MDIO bus (Ethernet PHY) accessors +config ACPI_MDIO + def_tristate PHYLIB + depends on ACPI + depends on PHYLIB + help + ACPI MDIO bus (Ethernet PHY) accessors + if MDIO_BUS config MDIO_DEVRES diff --git a/drivers/net/mdio/Makefile b/drivers/net/mdio/Makefile index 5c498dde463f..2373ade8af13 100644 --- a/drivers/net/mdio/Makefile +++ b/drivers/net/mdio/Makefile @@ -2,6 +2,7 @@ # Makefile for Linux MDIO bus drivers obj-$(CONFIG_OF_MDIO) += of_mdio.o +obj-$(CONFIG_ACPI_MDIO) += acpi_mdio.o obj-$(CONFIG_MDIO_ASPEED) += mdio-aspeed.o obj-$(CONFIG_MDIO_BCM_IPROC) += mdio-bcm-iproc.o diff --git a/drivers/net/mdio/acpi_mdio.c b/drivers/net/mdio/acpi_mdio.c new file mode 100644 index 000000000000..091c8272e596 --- /dev/null +++ b/drivers/net/mdio/acpi_mdio.c @@ -0,0 +1,51 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * ACPI helpers for the MDIO (Ethernet PHY) API + * + * This file provides helper functions for extracting PHY device information + * out of the ACPI ASL and using it to populate an mii_bus. + */ + +#include +#include + +MODULE_AUTHOR("Calvin Johnson "); +MODULE_LICENSE("GPL"); + +/** + * acpi_mdiobus_register - Register mii_bus and create PHYs from the ACPI ASL. + * @mdio: pointer to mii_bus structure + * @fwnode: pointer to fwnode of MDIO bus. + * + * This function registers the mii_bus structure and registers a phy_device + * for each child node of @fwnode. + */ +int acpi_mdiobus_register(struct mii_bus *mdio, struct fwnode_handle *fwnode) +{ + struct fwnode_handle *child; + u32 addr; + int ret; + + /* Mask out all PHYs from auto probing. */ + mdio->phy_mask = GENMASK(31, 0); + ret = mdiobus_register(mdio); + if (ret) + return ret; + + ACPI_COMPANION_SET(&mdio->dev, to_acpi_device_node(fwnode)); + + /* Loop over the child nodes and register a phy_device for each PHY */ + fwnode_for_each_child_node(fwnode, child) { + ret = acpi_get_local_address(ACPI_HANDLE_FWNODE(child), &addr); + if (ret || addr >= PHY_MAX_ADDR) + continue; + + ret = fwnode_mdiobus_register_phy(mdio, child, addr); + if (ret == -ENODEV) + dev_err(&mdio->dev, + "MDIO device at address %d is missing.\n", + addr); + } + return 0; +} +EXPORT_SYMBOL(acpi_mdiobus_register); diff --git a/include/linux/acpi_mdio.h b/include/linux/acpi_mdio.h new file mode 100644 index 000000000000..748d261fe2f9 --- /dev/null +++ b/include/linux/acpi_mdio.h @@ -0,0 +1,25 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * ACPI helper for the MDIO (Ethernet PHY) API + */ + +#ifndef __LINUX_ACPI_MDIO_H +#define __LINUX_ACPI_MDIO_H + +#include + +#if IS_ENABLED(CONFIG_ACPI_MDIO) +int acpi_mdiobus_register(struct mii_bus *mdio, struct fwnode_handle *fwnode); +#else /* CONFIG_ACPI_MDIO */ +static inline int acpi_mdiobus_register(struct mii_bus *mdio, struct fwnode_handle *fwnode) +{ + /* + * Fall back to mdiobus_register() function to register a bus. + * This way, we don't have to keep compat bits around in drivers. + */ + + return mdiobus_register(mdio); +} +#endif + +#endif /* __LINUX_ACPI_MDIO_H */ -- 2.17.1 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=-16.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,MSGID_FROM_MTA_HEADER,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 DC1FEC433E0 for ; Thu, 18 Feb 2021 05:32:44 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 591EB64DF0 for ; Thu, 18 Feb 2021 05:32:44 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 591EB64DF0 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=oss.nxp.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=dsnRvWrddNlPtkr3LqVPC1dbZZjUBQqlS9BfuSEyLBk=; b=eIhq9vKghCd3nqfl8wM5Jit0Q Q84KHAaPe7Ic0jynOvO2BlZirWE54ydIPpJFwbV8ZKkWAjuWk/DoDT2LVD6cEt6p5hr+F4EHZ/ja5 95xiXlNufomdBAy0aAgkfw54qLFd5OL81KAU1h95XPhvfCEhYVMOdjQRXZaeuZfOgtpjvGqpPottw 6WXVKA8c/NVkj60ZY/01qoox+BHkjSgKKsPoOEGBSIoypKfcp1NQ/718pvovO6lAWJiMvWt0sh/kW 1TKz2vq6JlFVAg2BWu6vzZjFTERGKaj1lMkGEdogY3/inhhGFbJSCwmSWKQa3kwQURvwefwIXBEU7 Iy8W2Z/ZA==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1lCbsA-0008IA-81; Thu, 18 Feb 2021 05:29:06 +0000 Received: from mail-eopbgr70044.outbound.protection.outlook.com ([40.107.7.44] helo=EUR04-HE1-obe.outbound.protection.outlook.com) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1lCbrr-0008AZ-P9 for linux-arm-kernel@lists.infradead.org; Thu, 18 Feb 2021 05:28:50 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=CCYcdK5mYmTbExkhF/R2bFN7QfBQGYvAFxvpSEjFRiQWQdeLByWHCru4YyiKh5Z70uFEGKbhnNiecBrNq3EUkdGkFbwCu8PP/yAG+xbZ0M5xyui7vYZDvDZb+37LuYl6EpnTbfitURuoCIixmTbZmjg0i1qIEbCePB7ms/F3EKFRnm53KIsAYLjGzFjI16rFCsOXDcIhpqrU9+5K+9+diNQOkXUEKSWDIxAm6wnnSi6RXkJPIIsTpgxwjBkPs11mMnN15LMNvPcEeb9N1N4wL7NdXcUeuTfvuTE9SiumxqFKEHniI68Fvl6oEP8yJzQa4e5nI8Re6OaqG2jg0K1jeA== 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=15LjNqafMe9XbMRxl6wCPfbkpsrCCaKoRRcVNTMs5uo=; b=SdrnS5g3as5BXrgvyYQ8x4y4K9Ao3bGXXrZC9PRa56taHdiVEtmVSnK3n1RczGaor+HeBchdpuB0BxTaoz0YeTbKaKwVO3oG4ee4ttGp1AWxO5AO1EncAl1xRtnOtTgjOefnmUYacUhhjAoWRUOxC9vCn29f2IuA4jPr8vLHkkvpKWpqVVotrAxBIZpkUaPtfoUXmoI0a+fdii3rm7KwKvM6f2qeyoTytOWW0zojOhvka7sh4FLmBYyshX5fq5ebUaBmBk+9GoPf6o8kewY7ofrNRhvWGjnc1KhRUwvO0nE8BO/TnKJRCi1ToAxdK3KFN58AU6uq7QnvfOJ/n7xDkg== 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=15LjNqafMe9XbMRxl6wCPfbkpsrCCaKoRRcVNTMs5uo=; b=WsLf6zGzM9xGl+iQ8pbkMGnNMRZj0+vtEM0z9DHgfIUjauhJ6foc3anOWN7lLj/UrfANRRDLruoKf3etL61ouPO+nW4evyKYAt+YWXO7y4c4/XKm+8JLjhToSnyRsrLSgzOfJZAWHxA8nbxH5yKvsSjOJxRlLv3qMoRx5u6W4Pw= 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 AM8PR04MB7730.eurprd04.prod.outlook.com (2603:10a6:20b:242::11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3868.27; Thu, 18 Feb 2021 05:28:35 +0000 Received: from AM0PR04MB5636.eurprd04.prod.outlook.com ([fe80::e90e:b1d6:18a2:2d42]) by AM0PR04MB5636.eurprd04.prod.outlook.com ([fe80::e90e:b1d6:18a2:2d42%6]) with mapi id 15.20.3846.042; Thu, 18 Feb 2021 05:28:35 +0000 From: Calvin Johnson To: Grant Likely , "Rafael J . Wysocki" , Jeremy Linton , Andrew Lunn , Andy Shevchenko , Florian Fainelli , Russell King - ARM Linux admin , Cristi Sovaiala , Florin Laurentiu Chiculita , Ioana Ciornei , Madalin Bucur , Heikki Krogerus , Marcin Wojtas , Pieter Jansen Van Vuuren , Jon , Saravana Kannan , Randy Dunlap Subject: [net-next PATCH v6 10/15] net: mdio: Add ACPI support code for mdio Date: Thu, 18 Feb 2021 10:56:49 +0530 Message-Id: <20210218052654.28995-11-calvin.johnson@oss.nxp.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210218052654.28995-1-calvin.johnson@oss.nxp.com> References: <20210218052654.28995-1-calvin.johnson@oss.nxp.com> X-Originating-IP: [14.142.151.118] X-ClientProxiedBy: SG2PR02CA0051.apcprd02.prod.outlook.com (2603:1096:4:54::15) 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 SG2PR02CA0051.apcprd02.prod.outlook.com (2603:1096:4:54::15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3868.27 via Frontend Transport; Thu, 18 Feb 2021 05:28:29 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-HT: Tenant X-MS-Office365-Filtering-Correlation-Id: 5529b96b-9b9a-433e-3d38-08d8d3ce09fe X-MS-TrafficTypeDiagnostic: AM8PR04MB7730: X-MS-Exchange-SharedMailbox-RoutingAgent-Processed: True X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:7691; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: F3enkKJhhAFDdtpLa9PUxPeVBlFKzblt41G3ME/NDn4Vfqxycm8/0AaUkSHtn/FxADti57Mi3sr0fkFtzg2gJ3tb+xRAijCyZENQnhNJSHohZj5DgpNsgMpTWL/46hbIOGn1sKBR2inL3bBBLJYs4+GxUGeDOeiqjL1zbl0QRasTGnXTN9Yd9UHUY5P5j6r78uRCsH/jSmuXyhNeT7FxFME+om5vEga9L9lNSgg0qDP+VAYTRr/x+l2L4bTpz2oxLcV88iqRFKRxtD5ztGqGoolfv4eINk2hxhyhL2LCA/YX8A3Vkuxs4/JcIBfcvq5aI9WfpQUkDDhVf+bv8Qf0pjokRi6BqfeUSmPGQxywCv0bX1kRHJWxZucZRscHAFva0MLRoUrayyxfAOQVJzbkOGd7w5L66Dv/ENkYuX8V2LUvktS2ZYJ1wVD9BtBOrvoEAkDqn5Zw/bQXJj+MwHj4NQMvTS2JIC98q9J00Wi+4nMcfeHFUUVxwALrV9XVBCQkolGNHOAnL3CiNr6BlaJ/YlJqHZYr88VimezeF+T9hwVjdG+Y6taJUArS85WEevQhK7fEmQzsGiCYcOXA4mh5kQ== 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; SFS:(4636009)(396003)(376002)(346002)(366004)(39860400002)(136003)(26005)(8936002)(52116002)(16526019)(921005)(478600001)(1076003)(6486002)(8676002)(55236004)(83380400001)(5660300002)(186003)(44832011)(110136005)(6512007)(956004)(54906003)(316002)(66946007)(2906002)(2616005)(1006002)(66476007)(86362001)(7416002)(6506007)(6666004)(4326008)(66556008)(110426009); DIR:OUT; SFP:1101; X-MS-Exchange-AntiSpam-MessageData: =?us-ascii?Q?MEjVIl7JMaBRiegK/lMa5VNc6Xjqw3FKtUQ9GJjHbfmCiqTwj5hzKlp2ft6U?= =?us-ascii?Q?x2oujQ/BLpwThh1U42c3l2kWSITqnegzQxAy4JZvQqjMUfJuI/2XBKBO+Ft8?= =?us-ascii?Q?PyecRkqX3OEN4KtMJbzff3dYyYZFAVappM5E+uj/bWRkYtUidlPtBh43BA/T?= =?us-ascii?Q?LdHEG5dro+rpyPgxtJaacKeAuoq8l8qoEC9A8NxtXQPyxxdrPjt+HeNbctgV?= =?us-ascii?Q?ORoPNkEM7/Av+yMBxCOXFHSCBKRbm2KEQkyYJ4c+faE6VEJbGtwm0Di7CnBd?= =?us-ascii?Q?bKFvff4HBAzRDOMry827zGJQNv9qRbuoBy1J7B0+t4SG8kAF/aPN3LdX3+Dv?= =?us-ascii?Q?27391r2TC9smPZsSpbQMUHbId+Doj2GE/skUIBv/L++DJmnjBLe5FmDIDZDz?= =?us-ascii?Q?dr//AR06J8hgso10PszkTw9WrrQdRj/Wk+0gt1B2P2M5GG9/A6R81MATDye8?= =?us-ascii?Q?pBEaCii0TIvMBQcDamGFA/JT45SK35pa5PQUjuE1Vdma3d7XQwn9N2S2c+xK?= =?us-ascii?Q?xXCsYssRfOvP+0CPaABmE39Xa/qkD5x912awxh8jFlvgSGhftPkp6ejMngjv?= =?us-ascii?Q?UpAk5PxuTzm/AZEuDenvAQbk83E9CzOmGdOUd3NCD4vVMNBmBQamPlVNROJ5?= =?us-ascii?Q?3sxGmd0CvVxxar9Jsme+qI4oFF6pFhQcn+NUB68JwsdcfVe1NiG9KoNXVG5r?= =?us-ascii?Q?QXga7zkXpXOsOEahPyp7YCrz/fYMcUdQzTSCKgslSB2BTM1McQ3yuYupGWvV?= =?us-ascii?Q?V0YoIFs17t/TE2MrUUc1+e6Pat80sRmG9yWGX4yJB9oPKIERXTqpu5Gh1J6x?= =?us-ascii?Q?h8NXTiAYvYoCVRNHHxMn1BdpLIGLzzIoZGf4O0hgGwR8ELqCgJZePbP16wzC?= =?us-ascii?Q?rxq6NGOSHaBzJ0lekTGZ9GOm8ehg5KuW4vtMAKb0HLCLjAP1QbXFP+5Ew7gf?= =?us-ascii?Q?7nXdWCB4iLOmlAfxYOGVil3PLkuwN7F6rNOeWHmb1mK8o8+A2e4Cwqn9aCL1?= =?us-ascii?Q?vC9LpYBKmDVJzjRiL7oy97HYax0UXrXqJujBBbklLHc3xymKBBz1wd37WEXM?= =?us-ascii?Q?6VY+cU4XK1KeYj16tPjrTW4eLD9oqOUV72yGnIWDh+L96YDcGleBas3JdRGu?= =?us-ascii?Q?qdRilr1DiiKSUzke2lre0W1bFLODlUcW2y4mjrA31+m4+D4xm7ZMzcu8mUm9?= =?us-ascii?Q?I4qnAw5NFiQd4wLc2g0K7GozGGVuJDtqYyfDH/JLR4ePbPjEAF/erjd81XyT?= =?us-ascii?Q?MUSu1Aqm4LZ9GyRq46rs1RapCVEnNF3t245L59oft0RPJSjaUEZ4LxqeUSm4?= =?us-ascii?Q?u6s2oEuY9ldmKm4WfzeJM+nK?= X-OriginatorOrg: oss.nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 5529b96b-9b9a-433e-3d38-08d8d3ce09fe X-MS-Exchange-CrossTenant-AuthSource: AM0PR04MB5636.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 18 Feb 2021 05:28:35.8734 (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: i0SY10Xk5ry2o5/Mt8hg91seyaH8TuDmfOjBo9O0M2OhGjkn7QNYSXq9IVT7kDY39hinVtGGI3qJUnRYkC360Q== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM8PR04MB7730 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210218_002848_258871_D5955AB1 X-CRM114-Status: GOOD ( 26.09 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Calvin Johnson , Diana Madalina Craciun , linux-acpi@vger.kernel.org, linux.cj@gmail.com, Jakub Kicinski , Heiner Kallweit , "David S. Miller" , linux-arm-kernel@lists.infradead.org, Laurentiu Tudor Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Define acpi_mdiobus_register() to Register mii_bus and create PHYs for each ACPI child node. Signed-off-by: Calvin Johnson --- Changes in v6: - use GENMASK() and ACPI_COMPANION_SET() - some cleanup - remove unwanted header inclusion Changes in v5: - add missing MODULE_LICENSE() - replace fwnode_get_id() with OF and ACPI function calls Changes in v4: None Changes in v3: None Changes in v2: None MAINTAINERS | 1 + drivers/net/mdio/Kconfig | 7 +++++ drivers/net/mdio/Makefile | 1 + drivers/net/mdio/acpi_mdio.c | 51 ++++++++++++++++++++++++++++++++++++ include/linux/acpi_mdio.h | 25 ++++++++++++++++++ 5 files changed, 85 insertions(+) create mode 100644 drivers/net/mdio/acpi_mdio.c create mode 100644 include/linux/acpi_mdio.h diff --git a/MAINTAINERS b/MAINTAINERS index 1a219335efe0..41d16d77b6cf 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -6680,6 +6680,7 @@ F: Documentation/devicetree/bindings/net/mdio* F: Documentation/devicetree/bindings/net/qca,ar803x.yaml F: Documentation/networking/phy.rst F: drivers/net/mdio/ +F: drivers/net/mdio/acpi_mdio.c F: drivers/net/mdio/of_mdio.c F: drivers/net/pcs/ F: drivers/net/phy/ diff --git a/drivers/net/mdio/Kconfig b/drivers/net/mdio/Kconfig index a10cc460d7cf..df6bb7837d6a 100644 --- a/drivers/net/mdio/Kconfig +++ b/drivers/net/mdio/Kconfig @@ -27,6 +27,13 @@ config OF_MDIO help OpenFirmware MDIO bus (Ethernet PHY) accessors +config ACPI_MDIO + def_tristate PHYLIB + depends on ACPI + depends on PHYLIB + help + ACPI MDIO bus (Ethernet PHY) accessors + if MDIO_BUS config MDIO_DEVRES diff --git a/drivers/net/mdio/Makefile b/drivers/net/mdio/Makefile index 5c498dde463f..2373ade8af13 100644 --- a/drivers/net/mdio/Makefile +++ b/drivers/net/mdio/Makefile @@ -2,6 +2,7 @@ # Makefile for Linux MDIO bus drivers obj-$(CONFIG_OF_MDIO) += of_mdio.o +obj-$(CONFIG_ACPI_MDIO) += acpi_mdio.o obj-$(CONFIG_MDIO_ASPEED) += mdio-aspeed.o obj-$(CONFIG_MDIO_BCM_IPROC) += mdio-bcm-iproc.o diff --git a/drivers/net/mdio/acpi_mdio.c b/drivers/net/mdio/acpi_mdio.c new file mode 100644 index 000000000000..091c8272e596 --- /dev/null +++ b/drivers/net/mdio/acpi_mdio.c @@ -0,0 +1,51 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * ACPI helpers for the MDIO (Ethernet PHY) API + * + * This file provides helper functions for extracting PHY device information + * out of the ACPI ASL and using it to populate an mii_bus. + */ + +#include +#include + +MODULE_AUTHOR("Calvin Johnson "); +MODULE_LICENSE("GPL"); + +/** + * acpi_mdiobus_register - Register mii_bus and create PHYs from the ACPI ASL. + * @mdio: pointer to mii_bus structure + * @fwnode: pointer to fwnode of MDIO bus. + * + * This function registers the mii_bus structure and registers a phy_device + * for each child node of @fwnode. + */ +int acpi_mdiobus_register(struct mii_bus *mdio, struct fwnode_handle *fwnode) +{ + struct fwnode_handle *child; + u32 addr; + int ret; + + /* Mask out all PHYs from auto probing. */ + mdio->phy_mask = GENMASK(31, 0); + ret = mdiobus_register(mdio); + if (ret) + return ret; + + ACPI_COMPANION_SET(&mdio->dev, to_acpi_device_node(fwnode)); + + /* Loop over the child nodes and register a phy_device for each PHY */ + fwnode_for_each_child_node(fwnode, child) { + ret = acpi_get_local_address(ACPI_HANDLE_FWNODE(child), &addr); + if (ret || addr >= PHY_MAX_ADDR) + continue; + + ret = fwnode_mdiobus_register_phy(mdio, child, addr); + if (ret == -ENODEV) + dev_err(&mdio->dev, + "MDIO device at address %d is missing.\n", + addr); + } + return 0; +} +EXPORT_SYMBOL(acpi_mdiobus_register); diff --git a/include/linux/acpi_mdio.h b/include/linux/acpi_mdio.h new file mode 100644 index 000000000000..748d261fe2f9 --- /dev/null +++ b/include/linux/acpi_mdio.h @@ -0,0 +1,25 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * ACPI helper for the MDIO (Ethernet PHY) API + */ + +#ifndef __LINUX_ACPI_MDIO_H +#define __LINUX_ACPI_MDIO_H + +#include + +#if IS_ENABLED(CONFIG_ACPI_MDIO) +int acpi_mdiobus_register(struct mii_bus *mdio, struct fwnode_handle *fwnode); +#else /* CONFIG_ACPI_MDIO */ +static inline int acpi_mdiobus_register(struct mii_bus *mdio, struct fwnode_handle *fwnode) +{ + /* + * Fall back to mdiobus_register() function to register a bus. + * This way, we don't have to keep compat bits around in drivers. + */ + + return mdiobus_register(mdio); +} +#endif + +#endif /* __LINUX_ACPI_MDIO_H */ -- 2.17.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel