linux-kernel - [RFC net-next PATCH 14/16] net: mdio: Add helper functions for accessing MDIO devices

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Date:   Mon,  4 Oct 2021 15:15:25 -0400
From:   Sean Anderson <sean.anderson@...o.com>
To:     netdev@...r.kernel.org, "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, linux-kernel@...r.kernel.org
Cc:     Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        Sean Anderson <sean.anderson@...o.com>
Subject: [RFC net-next PATCH 14/16] net: mdio: Add helper functions for accessing MDIO devices

This adds some helpers for accessing non-phy MDIO devices. They are
analogous to phy_(read|write|modify), except that they take an mdio_device
and not a phy_device.

Signed-off-by: Sean Anderson <sean.anderson@...o.com>
---

 include/linux/mdio.h | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/include/linux/mdio.h b/include/linux/mdio.h
index 5e6dc38f418e..1342bbb6ef0c 100644
--- a/include/linux/mdio.h
+++ b/include/linux/mdio.h
@@ -350,6 +350,23 @@ int mdiobus_write_nested(struct mii_bus *bus, int addr, u32 regnum, u16 val);
 int mdiobus_modify(struct mii_bus *bus, int addr, u32 regnum, u16 mask,
 		   u16 set);
 
+static inline int mdiodev_read(struct mdio_device *mdiodev, u32 regnum)
+{
+	return mdiobus_read(mdiodev->bus, mdiodev->addr, regnum);
+}
+
+static inline int mdiodev_write(struct mdio_device *mdiodev, u32 regnum,
+				u16 val)
+{
+	return mdiobus_write(mdiodev->bus, mdiodev->addr, regnum, val);
+}
+
+static inline int mdiodev_modify(struct mdio_device *mdiodev, u32 regnum,
+				u16 mask, u16 set)
+{
+	return mdiobus_modify(mdiodev->bus, mdiodev->addr, regnum, mask, set);
+}
+
 static inline u32 mdiobus_c45_addr(int devad, u16 regnum)
 {
 	return MII_ADDR_C45 | devad << MII_DEVADDR_C45_SHIFT | regnum;
-- 
2.25.1