[net-next PATCH v2 1/3] net: mdio: Add helper functions for accessing MDIO devices

Sean Anderson
2021-10-22T15:59:41Z

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@seco.com>
---
This patch was originally submitted as [1].

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

(no changes since v1)

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