diff options
Diffstat (limited to 'drivers/net/phy/phy-core.c')
-rw-r--r-- | drivers/net/phy/phy-core.c | 204 |
1 files changed, 170 insertions, 34 deletions
diff --git a/drivers/net/phy/phy-core.c b/drivers/net/phy/phy-core.c index 966c93cbe616..15f349e5995a 100644 --- a/drivers/net/phy/phy-core.c +++ b/drivers/net/phy/phy-core.c @@ -540,6 +540,28 @@ static void mmd_phy_indirect(struct mii_bus *bus, int phy_addr, int devad, devad | MII_MMD_CTRL_NOINCR); } +static int mmd_phy_read(struct mii_bus *bus, int phy_addr, bool is_c45, + int devad, u32 regnum) +{ + if (is_c45) + return __mdiobus_c45_read(bus, phy_addr, devad, regnum); + + mmd_phy_indirect(bus, phy_addr, devad, regnum); + /* Read the content of the MMD's selected register */ + return __mdiobus_read(bus, phy_addr, MII_MMD_DATA); +} + +static int mmd_phy_write(struct mii_bus *bus, int phy_addr, bool is_c45, + int devad, u32 regnum, u16 val) +{ + if (is_c45) + return __mdiobus_c45_write(bus, phy_addr, devad, regnum, val); + + mmd_phy_indirect(bus, phy_addr, devad, regnum); + /* Write the data into MMD's selected register */ + return __mdiobus_write(bus, phy_addr, MII_MMD_DATA, val); +} + /** * __phy_read_mmd - Convenience function for reading a register * from an MMD on a given PHY. @@ -551,26 +573,14 @@ static void mmd_phy_indirect(struct mii_bus *bus, int phy_addr, int devad, */ int __phy_read_mmd(struct phy_device *phydev, int devad, u32 regnum) { - int val; - if (regnum > (u16)~0 || devad > 32) return -EINVAL; - if (phydev->drv && phydev->drv->read_mmd) { - val = phydev->drv->read_mmd(phydev, devad, regnum); - } else if (phydev->is_c45) { - val = __mdiobus_c45_read(phydev->mdio.bus, phydev->mdio.addr, - devad, regnum); - } else { - struct mii_bus *bus = phydev->mdio.bus; - int phy_addr = phydev->mdio.addr; - - mmd_phy_indirect(bus, phy_addr, devad, regnum); + if (phydev->drv && phydev->drv->read_mmd) + return phydev->drv->read_mmd(phydev, devad, regnum); - /* Read the content of the MMD's selected register */ - val = __mdiobus_read(bus, phy_addr, MII_MMD_DATA); - } - return val; + return mmd_phy_read(phydev->mdio.bus, phydev->mdio.addr, + phydev->is_c45, devad, regnum); } EXPORT_SYMBOL(__phy_read_mmd); @@ -607,28 +617,14 @@ EXPORT_SYMBOL(phy_read_mmd); */ int __phy_write_mmd(struct phy_device *phydev, int devad, u32 regnum, u16 val) { - int ret; - if (regnum > (u16)~0 || devad > 32) return -EINVAL; - if (phydev->drv && phydev->drv->write_mmd) { - ret = phydev->drv->write_mmd(phydev, devad, regnum, val); - } else if (phydev->is_c45) { - ret = __mdiobus_c45_write(phydev->mdio.bus, phydev->mdio.addr, - devad, regnum, val); - } else { - struct mii_bus *bus = phydev->mdio.bus; - int phy_addr = phydev->mdio.addr; - - mmd_phy_indirect(bus, phy_addr, devad, regnum); + if (phydev->drv && phydev->drv->write_mmd) + return phydev->drv->write_mmd(phydev, devad, regnum, val); - /* Write the data into MMD's selected register */ - __mdiobus_write(bus, phy_addr, MII_MMD_DATA, val); - - ret = 0; - } - return ret; + return mmd_phy_write(phydev->mdio.bus, phydev->mdio.addr, + phydev->is_c45, devad, regnum, val); } EXPORT_SYMBOL(__phy_write_mmd); @@ -655,6 +651,146 @@ int phy_write_mmd(struct phy_device *phydev, int devad, u32 regnum, u16 val) EXPORT_SYMBOL(phy_write_mmd); /** + * __phy_package_read_mmd - read MMD reg relative to PHY package base addr + * @phydev: The phy_device struct + * @addr_offset: The offset to be added to PHY package base_addr + * @devad: The MMD to read from + * @regnum: The register on the MMD to read + * + * Convenience helper for reading a register of an MMD on a given PHY + * using the PHY package base address. The base address is added to + * the addr_offset value. + * + * Same calling rules as for __phy_read(); + * + * NOTE: It's assumed that the entire PHY package is either C22 or C45. + */ +int __phy_package_read_mmd(struct phy_device *phydev, + unsigned int addr_offset, int devad, + u32 regnum) +{ + int addr = phy_package_address(phydev, addr_offset); + + if (addr < 0) + return addr; + + if (regnum > (u16)~0 || devad > 32) + return -EINVAL; + + return mmd_phy_read(phydev->mdio.bus, addr, phydev->is_c45, devad, + regnum); +} +EXPORT_SYMBOL(__phy_package_read_mmd); + +/** + * phy_package_read_mmd - read MMD reg relative to PHY package base addr + * @phydev: The phy_device struct + * @addr_offset: The offset to be added to PHY package base_addr + * @devad: The MMD to read from + * @regnum: The register on the MMD to read + * + * Convenience helper for reading a register of an MMD on a given PHY + * using the PHY package base address. The base address is added to + * the addr_offset value. + * + * Same calling rules as for phy_read(); + * + * NOTE: It's assumed that the entire PHY package is either C22 or C45. + */ +int phy_package_read_mmd(struct phy_device *phydev, + unsigned int addr_offset, int devad, + u32 regnum) +{ + int addr = phy_package_address(phydev, addr_offset); + int val; + + if (addr < 0) + return addr; + + if (regnum > (u16)~0 || devad > 32) + return -EINVAL; + + phy_lock_mdio_bus(phydev); + val = mmd_phy_read(phydev->mdio.bus, addr, phydev->is_c45, devad, + regnum); + phy_unlock_mdio_bus(phydev); + + return val; +} +EXPORT_SYMBOL(phy_package_read_mmd); + +/** + * __phy_package_write_mmd - write MMD reg relative to PHY package base addr + * @phydev: The phy_device struct + * @addr_offset: The offset to be added to PHY package base_addr + * @devad: The MMD to write to + * @regnum: The register on the MMD to write + * @val: value to write to @regnum + * + * Convenience helper for writing a register of an MMD on a given PHY + * using the PHY package base address. The base address is added to + * the addr_offset value. + * + * Same calling rules as for __phy_write(); + * + * NOTE: It's assumed that the entire PHY package is either C22 or C45. + */ +int __phy_package_write_mmd(struct phy_device *phydev, + unsigned int addr_offset, int devad, + u32 regnum, u16 val) +{ + int addr = phy_package_address(phydev, addr_offset); + + if (addr < 0) + return addr; + + if (regnum > (u16)~0 || devad > 32) + return -EINVAL; + + return mmd_phy_write(phydev->mdio.bus, addr, phydev->is_c45, devad, + regnum, val); +} +EXPORT_SYMBOL(__phy_package_write_mmd); + +/** + * phy_package_write_mmd - write MMD reg relative to PHY package base addr + * @phydev: The phy_device struct + * @addr_offset: The offset to be added to PHY package base_addr + * @devad: The MMD to write to + * @regnum: The register on the MMD to write + * @val: value to write to @regnum + * + * Convenience helper for writing a register of an MMD on a given PHY + * using the PHY package base address. The base address is added to + * the addr_offset value. + * + * Same calling rules as for phy_write(); + * + * NOTE: It's assumed that the entire PHY package is either C22 or C45. + */ +int phy_package_write_mmd(struct phy_device *phydev, + unsigned int addr_offset, int devad, + u32 regnum, u16 val) +{ + int addr = phy_package_address(phydev, addr_offset); + int ret; + + if (addr < 0) + return addr; + + if (regnum > (u16)~0 || devad > 32) + return -EINVAL; + + phy_lock_mdio_bus(phydev); + ret = mmd_phy_write(phydev->mdio.bus, addr, phydev->is_c45, devad, + regnum, val); + phy_unlock_mdio_bus(phydev); + + return ret; +} +EXPORT_SYMBOL(phy_package_write_mmd); + +/** * phy_modify_changed - Function for modifying a PHY register * @phydev: the phy_device struct * @regnum: register number to modify |