linux-kernel - [PATCH 1/3] net: mdio: Add helper functions for accessing MDIO devices

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Message-Id: <20211018215448.1723702-1-sean.anderson@seco.com>
Date:   Mon, 18 Oct 2021 17:54:46 -0400
From:   Sean Anderson <sean.anderson@...o.com>
To:     netdev@...r.kernel.org, Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>
Cc:     linux-kernel@...r.kernel.org,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Russell King <linux@...linux.org.uk>,
        Sean Anderson <sean.anderson@...o.com>
Subject: [PATCH 1/3] 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>
---
This patch was originally submitted as [1].

[1] https://lore.kernel.org/netdev/20211004191527.1610759-15-sean.anderson@seco.com/

 include/linux/mdio.h | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/include/linux/mdio.h b/include/linux/mdio.h
index f622888a4ba8..9f3587a61e14 100644
--- a/include/linux/mdio.h
+++ b/include/linux/mdio.h
@@ -352,6 +352,30 @@ int mdiobus_modify(struct mii_bus *bus, int addr, u32 regnum, u16 mask,
 int mdiobus_modify_changed(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 int mdiodev_modify_changed(struct mdio_device *mdiodev,
+					 u32 regnum, u16 mask, u16 set)
+{
+	return mdiobus_modify_changed(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