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net: mdio: add unlocked mdiobus and mdiodev bus accessors 

Add the following unlocked accessors to complete the set:
__mdiobus_modify()
__mdiodev_read()
__mdiodev_write()
__mdiodev_modify()
__mdiodev_modify_changed()
which we will need for Marvell DSA PCS conversion.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Russell King (Oracle) 2023-07-13 09:42:22 +01:00 committed by David S. Miller
parent 24699cc1ff
commit e6a45700e7
2 changed files with 48 additions and 2 deletions
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24
drivers/net/phy/mdio_bus.c
View File

@ -1210,6 +1210,26 @@ int mdiobus_c45_write_nested(struct mii_bus *bus, int addr, int devad,
}
EXPORT_SYMBOL(mdiobus_c45_write_nested);
/*
* __mdiobus_modify - Convenience function for modifying a given mdio device
* register
* @bus: the mii_bus struct
* @addr: the phy address
* @regnum: register number to write
* @mask: bit mask of bits to clear
* @set: bit mask of bits to set
*/
int __mdiobus_modify(struct mii_bus *bus, int addr, u32 regnum, u16 mask,
u16 set)
{
int err;
err = __mdiobus_modify_changed(bus, addr, regnum, mask, set);
return err < 0 ? err : 0;
}
EXPORT_SYMBOL_GPL(__mdiobus_modify);
/**
* mdiobus_modify - Convenience function for modifying a given mdio device
* register
@ -1224,10 +1244,10 @@ int mdiobus_modify(struct mii_bus *bus, int addr, u32 regnum, u16 mask, u16 set)
int err;
mutex_lock(&bus->mdio_lock);
err = __mdiobus_modify_changed(bus, addr, regnum, mask, set);
err = __mdiobus_modify(bus, addr, regnum, mask, set);
mutex_unlock(&bus->mdio_lock);
return err < 0 ? err : 0;
return err;
}
EXPORT_SYMBOL_GPL(mdiobus_modify);

26
include/linux/mdio.h
View File

@ -537,6 +537,8 @@ static inline void mii_c73_mod_linkmode(unsigned long *adv, u16 *lpa)
int __mdiobus_read(struct mii_bus *bus, int addr, u32 regnum);
int __mdiobus_write(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);
int __mdiobus_modify_changed(struct mii_bus *bus, int addr, u32 regnum,
u16 mask, u16 set);
@ -564,6 +566,30 @@ int mdiobus_c45_modify(struct mii_bus *bus, int addr, int devad, u32 regnum,
int mdiobus_c45_modify_changed(struct mii_bus *bus, int addr, int devad,
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 int mdiodev_read(struct mdio_device *mdiodev, u32 regnum)
{
return mdiobus_read(mdiodev->bus, mdiodev->addr, regnum);