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net: mdio: Add helper functions for accessing MDIO devices

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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>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sean Anderson 2021-10-22 11:59:12 -04:00 • committed by David S. Miller
parent db690aecaf
commit 0ebecb2644
1 changed files with 24 additions and 0 deletions
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24
include/linux/mdio.h
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@ -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, int mdiobus_modify_changed(struct mii_bus *bus, int addr, u32 regnum,
u16 mask, u16 set); 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) static inline u32 mdiobus_c45_addr(int devad, u16 regnum)
{ {
return MII_ADDR_C45 | devad << MII_DEVADDR_C45_SHIFT | regnum; return MII_ADDR_C45 | devad << MII_DEVADDR_C45_SHIFT | regnum;