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Date:   Tue, 12 Jan 2021 19:10:50 +0530
From:   Calvin Johnson <calvin.johnson@....nxp.com>
To:     Grant Likely <grant.likely@....com>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Jeremy Linton <jeremy.linton@....com>,
        Andrew Lunn <andrew@...n.ch>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Russell King - ARM Linux admin <linux@...linux.org.uk>,
        Cristi Sovaiala <cristian.sovaiala@....com>,
        Florin Laurentiu Chiculita <florinlaurentiu.chiculita@....com>,
        Ioana Ciornei <ioana.ciornei@....com>,
        Madalin Bucur <madalin.bucur@....nxp.com>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Marcin Wojtas <mw@...ihalf.com>,
        Pieter Jansen Van Vuuren <pieter.jansenvv@...boosystems.io>,
        Jon <jon@...id-run.com>
Cc:     Diana Madalina Craciun <diana.craciun@....com>,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        Laurentiu Tudor <laurentiu.tudor@....com>,
        linux-acpi@...r.kernel.org, linux.cj@...il.com,
        linux-arm-kernel@...ts.infradead.org,
        Calvin Johnson <calvin.johnson@....nxp.com>,
        "David S. Miller" <davem@...emloft.net>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Jakub Kicinski <kuba@...nel.org>
Subject: [net-next PATCH v3 11/15] net: mdiobus: Introduce fwnode_mdiobus_register()

Introduce fwnode_mdiobus_register() to register PHYs on the  mdiobus.
If the fwnode is DT node, then call of_mdiobus_register().
If it is an ACPI node, then call acpi_mdiobus_register().

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

Changes in v3:
- Use acpi_mdiobus_register()

Changes in v2: None

 drivers/net/phy/mdio_bus.c | 20 ++++++++++++++++++++
 include/linux/phy.h        |  1 +
 2 files changed, 21 insertions(+)

diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c
index 44ddfb0ba99f..01bee3c46d12 100644
--- a/drivers/net/phy/mdio_bus.c
+++ b/drivers/net/phy/mdio_bus.c
@@ -9,6 +9,7 @@
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
 #include <linux/acpi.h>
+#include <linux/acpi_mdio.h>
 #include <linux/delay.h>
 #include <linux/device.h>
 #include <linux/errno.h>
@@ -568,6 +569,25 @@ static int mdiobus_create_device(struct mii_bus *bus,
 	return ret;
 }
 
+/**
+ * fwnode_mdiobus_register - Register mii_bus and create PHYs from fwnode
+ * @mdio: pointer to mii_bus structure
+ * @fwnode: pointer to fwnode of MDIO bus.
+ *
+ * This function returns of_mdiobus_register() for DT and
+ * acpi_mdiobus_register() for ACPI.
+ */
+int fwnode_mdiobus_register(struct mii_bus *mdio, struct fwnode_handle *fwnode)
+{
+	if (is_of_node(fwnode))
+		return of_mdiobus_register(mdio, to_of_node(fwnode));
+	else if (is_acpi_node(fwnode))
+		return acpi_mdiobus_register(mdio, fwnode);
+
+	return -EINVAL;
+}
+EXPORT_SYMBOL(fwnode_mdiobus_register);
+
 /**
  * __mdiobus_register - bring up all the PHYs on a given bus and attach them to bus
  * @bus: target mii_bus
diff --git a/include/linux/phy.h b/include/linux/phy.h
index 28cd111f1b09..0a5c68eab53a 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -383,6 +383,7 @@ static inline struct mii_bus *mdiobus_alloc(void)
 	return mdiobus_alloc_size(0);
 }
 
+int fwnode_mdiobus_register(struct mii_bus *mdio, struct fwnode_handle *fwnode);
 int __mdiobus_register(struct mii_bus *bus, struct module *owner);
 int __devm_mdiobus_register(struct device *dev, struct mii_bus *bus,
 			    struct module *owner);
-- 
2.17.1

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