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;
From:   Calvin Johnson <calvin.johnson@oss.nxp.com>
To:     linux.cj@gmail.com, Jeremy Linton <jeremy.linton@arm.com>,
        Andrew Lunn <andrew@lunn.ch>,
        Andy Shevchenko <andy.shevchenko@gmail.com>,
        Florian Fainelli <f.fainelli@gmail.com>,
        Russell King - ARM Linux admin <linux@armlinux.org.uk>,
        Cristi Sovaiala <cristian.sovaiala@nxp.com>,
        Florin Laurentiu Chiculita <florinlaurentiu.chiculita@nxp.com>,
        Ioana Ciornei <ioana.ciornei@nxp.com>,
        Madalin Bucur <madalin.bucur@oss.nxp.com>
Cc:     Laurentiu Tudor <laurentiu.tudor@nxp.com>,
        linux-acpi@vger.kernel.org,
        Diana Madalina Craciun <diana.craciun@nxp.com>,
        linux-arm-kernel@lists.infradead.org,
        Pankaj Bansal <pankaj.bansal@nxp.com>,
        linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
        Varun Sethi <V.Sethi@nxp.com>, Marcin Wojtas <mw@semihalf.com>,
        Makarand Pawagi <makarand.pawagi@nxp.com>,
        "Rajesh V . Bikkina" <rajesh.bikkina@nxp.com>,
        Calvin Johnson <calvin.johnson@oss.nxp.com>,
        Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
        Dmitry Torokhov <dmitry.torokhov@gmail.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Heikki Krogerus <heikki.krogerus@linux.intel.com>,
        "Rafael J. Wysocki" <rafael@kernel.org>,
        Sakari Ailus <sakari.ailus@linux.intel.com>,
        Thomas Gleixner <tglx@linutronix.de>
Subject: [net-next PATCH v1 1/2] device property: Introduce fwnode_phy_find_device()
Date:   Fri, 24 Apr 2020 08:46:16 +0530
Message-Id: <20200424031617.24033-2-calvin.johnson@oss.nxp.com>
In-Reply-To: <20200424031617.24033-1-calvin.johnson@oss.nxp.com>
References: <20200424031617.24033-1-calvin.johnson@oss.nxp.com>
Content-Type: text/plain
MIME-Version: 1.0
X-MS-Exchange-MessageSentRepresentingType: 1
Received: from lsv03152.swis.in-blr01.nxp.com (14.142.151.118) by SG2PR01CA0122.apcprd01.prod.exchangelabs.com (2603:1096:4:40::26) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2937.13 via Frontend Transport; Fri, 24 Apr 2020 03:16:55 +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: 0013d35d-ce90-4126-2315-08d7e7fdf4ad
X-MS-TrafficTypeDiagnostic: AM0PR04MB6788:|AM0PR04MB6788:
X-MS-Exchange-SharedMailbox-RoutingAgent-Processed: True
X-MS-Exchange-Transport-Forked: True
X-Microsoft-Antispam-PRVS: <AM0PR04MB6788029E649336DE2392D753D2D00@AM0PR04MB6788.eurprd04.prod.outlook.com>
X-MS-Oob-TLC-OOBClassifiers: OLM:2399;
X-Forefront-PRVS: 03838E948C
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)(396003)(39860400002)(366004)(136003)(376002)(2616005)(8676002)(956004)(5660300002)(8936002)(81156014)(186003)(6506007)(16526019)(26005)(54906003)(86362001)(110136005)(52116002)(55236004)(2906002)(1076003)(316002)(478600001)(44832011)(66946007)(6512007)(6666004)(6486002)(1006002)(7416002)(4326008)(66556008)(6636002)(66476007)(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: 1skwa5esCxR8h/8zdFO5Ag7qfjU7lKO2bnZDDJBagTkWimoP7644Td+b31+UlB8PwKffVNaaiQFPSvguE8aX3oXQrpziFyN5U11jPE7y7leZqKZ3pEB3dd/SYRCncskbtlKah9zlF2MFM6mjGO5b6w==
X-OriginatorOrg: oss.nxp.com
X-MS-Exchange-CrossTenant-Network-Message-Id: 0013d35d-ce90-4126-2315-08d7e7fdf4ad
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Apr 2020 03:17:01.6772
 (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: 6x3JVh2xIt+3EsIM+hDaNigJjbccAevyIkE0dJb7ATRXslOiJB4BDS9DWY0AUqbTheUOcqxFLvKMvlZPoihOOw==
X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR04MB6788
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

Define fwnode_phy_find_device() to iterate an mdiobus and find the
phy device of the provided phy fwnode.

Signed-off-by: Calvin Johnson <calvin.johnson@oss.nxp.com>
---

 drivers/base/property.c  | 41 ++++++++++++++++++++++++++++++++++++++++
 include/linux/property.h |  5 +++++
 2 files changed, 46 insertions(+)

diff --git a/drivers/base/property.c b/drivers/base/property.c
index 5f35c0ccf5e0..7c0c14c800b7 100644
--- a/drivers/base/property.c
+++ b/drivers/base/property.c
@@ -870,6 +870,47 @@ int device_get_phy_mode(struct device *dev)
 }
 EXPORT_SYMBOL_GPL(device_get_phy_mode);
 
+/**
+ * fwnode_phy_find_device - Give a phy fwnode to find the corresponding
+ * phy_device on the mdiobus.
+ * @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);
+
 static void *fwnode_get_mac_addr(struct fwnode_handle *fwnode,
 				 const char *name, char *addr,
 				 int alen)
diff --git a/include/linux/property.h b/include/linux/property.h
index d86de017c689..236d656a2981 100644
--- a/include/linux/property.h
+++ b/include/linux/property.h
@@ -370,9 +370,14 @@ const void *device_get_match_data(struct device *dev);
 
 int device_get_phy_mode(struct device *dev);
 
+struct phy_device *device_phy_find_device(struct device *dev);
+
 void *device_get_mac_address(struct device *dev, char *addr, int alen);
 
 int fwnode_get_phy_mode(struct fwnode_handle *fwnode);
+
+struct phy_device *fwnode_phy_find_device(struct fwnode_handle *phy_fwnode);
+
 void *fwnode_get_mac_address(struct fwnode_handle *fwnode,
 			     char *addr, int alen);
 struct fwnode_handle *fwnode_graph_get_next_endpoint(
-- 
2.17.1