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Bikkina" , Varun Sethi , linux-kernel@vger.kernel.org, Pankaj Bansal , Calvin Johnson , "David S. Miller" , Heiner Kallweit Subject: [net-next PATCH v2 1/3] device property: Introduce phy related fwnode functions Date: Mon, 27 Apr 2020 18:54:07 +0530 Message-Id: <20200427132409.23664-2-calvin.johnson@oss.nxp.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200427132409.23664-1-calvin.johnson@oss.nxp.com> References: <20200427132409.23664-1-calvin.johnson@oss.nxp.com> Content-Type: text/plain X-ClientProxiedBy: SG2PR04CA0191.apcprd04.prod.outlook.com (2603:1096:4:14::29) 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 SG2PR04CA0191.apcprd04.prod.outlook.com (2603:1096:4:14::29) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2937.13 via Frontend Transport; Mon, 27 Apr 2020 13:25:00 +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: 449c59f3-201a-4834-6e02-08d7eaae66a7 X-MS-TrafficTypeDiagnostic: AM0PR04MB6867:|AM0PR04MB6867: X-MS-Exchange-SharedMailbox-RoutingAgent-Processed: True X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:1417; X-Forefront-PRVS: 0386B406AA 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)(346002)(376002)(396003)(366004)(136003)(39860400002)(86362001)(8936002)(44832011)(2906002)(478600001)(66476007)(81156014)(66556008)(5660300002)(1076003)(66946007)(8676002)(26005)(7416002)(6506007)(2616005)(956004)(6512007)(4326008)(16526019)(110136005)(52116002)(6486002)(186003)(316002)(1006002)(54906003)(55236004)(110426005)(921003);DIR:OUT;SFP:1101; Received-SPF: None (protection.outlook.com: oss.nxp.com does not designate permitted sender hosts) X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: oss.nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 449c59f3-201a-4834-6e02-08d7eaae66a7 X-MS-Exchange-CrossTenant-OriginalArrivalTime: 27 Apr 2020 13:25:06.5671 (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: lxREwOepyP+OGDqOTVfur3df4h469s+l3PeVuWYn1UF65elOSjpveF+i+xjKIr6QYndqDORcFL//WaRgYYjzKg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR04MB6867 Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org Define fwnode_phy_find_device() to iterate an mdiobus and find the phy device of the provided phy fwnode. Additionally define device_phy_find_device() to find phy device of provided device. Define fwnode_get_phy_node() to get phy_node using named reference. Signed-off-by: Calvin Johnson --- Changes in v2: move phy code from base/property.c to net/phy/phy_device.c replace acpi & of code to get phy-handle with fwnode_find_reference drivers/net/phy/phy_device.c | 55 ++++++++++++++++++++++++++++++++++++ include/linux/phy.h | 3 ++ 2 files changed, 58 insertions(+) diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c index 7e1ddd5745d2..a2f3dbba8a3c 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -31,6 +31,7 @@ #include #include #include +#include MODULE_DESCRIPTION("PHY library"); MODULE_AUTHOR("Andy Fleming"); @@ -2436,6 +2437,60 @@ static bool phy_drv_supports_irq(struct phy_driver *phydrv) return phydrv->config_intr && phydrv->ack_interrupt; } +/** + * fwnode_phy_find_device - Find phy_device on the mdiobus for the provided + * phy_fwnode. + * @phy_fwnode: Pointer to the phy's fwnode. + * + * If successful, returns a pointer to the phy_device with the embedded + * struct device refcount incremented by one, or NULL on failure. + */ +struct phy_device *fwnode_phy_find_device(struct fwnode_handle *phy_fwnode) +{ + struct device *d; + struct mdio_device *mdiodev; + + if (!phy_fwnode) + return NULL; + + d = bus_find_device_by_fwnode(&mdio_bus_type, phy_fwnode); + if (d) { + mdiodev = to_mdio_device(d); + if (mdiodev->flags & MDIO_DEVICE_FLAG_PHY) + return to_phy_device(d); + put_device(d); + } + + return NULL; +} +EXPORT_SYMBOL(fwnode_phy_find_device); + +/** + * device_phy_find_device - For the given device, get the phy_device + * @dev: Pointer to the given device + * + * If successful, returns a pointer to the phy_device with the embedded + * struct device refcount incremented by one, or NULL on failure. + */ +struct phy_device *device_phy_find_device(struct device *dev) +{ + return fwnode_phy_find_device(dev_fwnode(dev)); +} +EXPORT_SYMBOL_GPL(device_phy_find_device); + +/** + * fwnode_get_phy_node - Get the phy_node using the named reference. + * @fwnode: Pointer to fwnode from which phy_node has to be obtained. + * + * Returns pointer to the phy fwnode, or ERR_PTR. Caller is responsible to + * call fwnode_handle_put() on the returned phy fwnode pointer. + */ +struct fwnode_handle *fwnode_get_phy_node(struct fwnode_handle *fwnode) +{ + return fwnode_find_reference(fwnode, "phy-handle", 0); +} +EXPORT_SYMBOL_GPL(fwnode_get_phy_node); + /** * phy_probe - probe and init a PHY device * @dev: device to probe and init diff --git a/include/linux/phy.h b/include/linux/phy.h index e2bfb9240587..f0450ef2dc9b 100644 --- a/include/linux/phy.h +++ b/include/linux/phy.h @@ -1328,6 +1328,9 @@ void phy_set_asym_pause(struct phy_device *phydev, bool rx, bool tx); bool phy_validate_pause(struct phy_device *phydev, struct ethtool_pauseparam *pp); void phy_get_pause(struct phy_device *phydev, bool *tx_pause, bool *rx_pause); +struct phy_device *fwnode_phy_find_device(struct fwnode_handle *phy_fwnode); +struct phy_device *device_phy_find_device(struct device *dev); +struct fwnode_handle *fwnode_get_phy_node(struct fwnode_handle *fwnode); void phy_resolve_pause(unsigned long *local_adv, unsigned long *partner_adv, bool *tx_pause, bool *rx_pause); -- 2.17.1