netdev - [net-next PATCH v7 5/6] phylink: introduce phylink_fwnode_phy

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Message-Id: <20200725142404.30634-6-calvin.johnson@oss.nxp.com>
Date:   Sat, 25 Jul 2020 19:54:03 +0530
From:   Calvin Johnson <calvin.johnson@....nxp.com>
To:     "Rafael J . Wysocki" <rafael@...nel.org>,
        Len Brown <lenb@...nel.org>,
        Lorenzo Pieralisi <Lorenzo.Pieralisi@....com>,
        Hanjun Guo <guohanjun@...wei.com>,
        Sudeep Holla <sudeep.holla@....com>,
        Al Stone <ahs3@...hat.com>,
        Jeremy Linton <jeremy.linton@....com>,
        Russell King - ARM Linux admin <linux@...linux.org.uk>,
        Jon <jon@...id-run.com>,
        Cristi Sovaiala <cristian.sovaiala@....com>,
        Ioana Ciornei <ioana.ciornei@....com>,
        Andrew Lunn <andrew@...n.ch>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Madalin Bucur <madalin.bucur@....nxp.com>
Cc:     linux-acpi@...r.kernel.org, netdev@...r.kernel.org,
        linux.cj@...il.com, Paul Yang <Paul.Yang@....com>,
        Calvin Johnson <calvin.johnson@....nxp.com>
Subject: [net-next PATCH v7 5/6] phylink: introduce phylink_fwnode_phy_connect()

Define phylink_fwnode_phy_connect() to connect phy specified by
a fwnode to a phylink instance.

Signed-off-by: Calvin Johnson <calvin.johnson@....nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@...il.com>

---

Changes in v7:
- assign flags to phy_dev

Changes in v6:
- clean up phylink_fwnode_phy_connect()

Changes in v5:
- return -EINVAL for invalid fwnode

Changes in v4: None
Changes in v3: None
Changes in v2: None

 drivers/net/phy/phylink.c | 32 ++++++++++++++++++++++++++++++++
 include/linux/phylink.h   |  3 +++
 2 files changed, 35 insertions(+)

diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c
index 32b4bd6a5b55..c35ae42d9318 100644
--- a/drivers/net/phy/phylink.c
+++ b/drivers/net/phy/phylink.c
@@ -5,6 +5,7 @@
  *
  * Copyright (C) 2015 Russell King
  */
+#include <linux/acpi.h>
 #include <linux/ethtool.h>
 #include <linux/export.h>
 #include <linux/gpio/consumer.h>
@@ -1118,6 +1119,37 @@ int phylink_of_phy_connect(struct phylink *pl, struct device_node *dn,
 }
 EXPORT_SYMBOL_GPL(phylink_of_phy_connect);
 
+/**
+ * phylink_fwnode_phy_connect() - connect the PHY specified in the fwnode.
+ * @pl: a pointer to a &struct phylink returned from phylink_create()
+ * @fwnode: a pointer to a &struct fwnode_handle.
+ * @flags: PHY-specific flags to communicate to the PHY device driver
+ *
+ * Connect the phy specified @fwnode to the phylink instance specified
+ * by @pl. Actions specified in phylink_connect_phy() will be
+ * performed.
+ *
+ * Returns 0 on success or a negative errno.
+ */
+int phylink_fwnode_phy_connect(struct phylink *pl,
+			       struct fwnode_handle *fwnode,
+			       u32 flags)
+{
+	struct phy_device *phy_dev;
+
+	if (is_of_node(fwnode))
+		return phylink_of_phy_connect(pl, to_of_node(fwnode), flags);
+	if (is_acpi_device_node(fwnode)) {
+		phy_dev = phy_find_by_mdio_handle(fwnode);
+		if (!phy_dev)
+			return -ENODEV;
+		phy_dev->dev_flags |= flags;
+		return phylink_connect_phy(pl, phy_dev);
+	}
+	return -EINVAL;
+}
+EXPORT_SYMBOL_GPL(phylink_fwnode_phy_connect);
+
 /**
  * phylink_disconnect_phy() - disconnect any PHY attached to the phylink
  *   instance.
diff --git a/include/linux/phylink.h b/include/linux/phylink.h
index 1aad2aea4610..ba23b5a1548f 100644
--- a/include/linux/phylink.h
+++ b/include/linux/phylink.h
@@ -434,6 +434,9 @@ void phylink_destroy(struct phylink *);
 
 int phylink_connect_phy(struct phylink *, struct phy_device *);
 int phylink_of_phy_connect(struct phylink *, struct device_node *, u32 flags);
+int phylink_fwnode_phy_connect(struct phylink *pl,
+			       struct fwnode_handle *fwnode,
+			       u32 flags);
 void phylink_disconnect_phy(struct phylink *);
 
 void phylink_mac_change(struct phylink *, bool up);
-- 
2.17.1