phy: add helpers for setting/clearing bits in PHY registers

Based on the recent introduction of phy_modify add helpers for setting
and clearing bits in PHY registers.
Signed-off-by: NHeiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

include/linux/phy.h

@@ -764,6 +764,55 @@ static inline int __phy_write(struct phy_device *phydev, u32 regnum, u16 val)
 int __phy_modify(struct phy_device *phydev, u32 regnum, u16 mask, u16 set);
 int phy_modify(struct phy_device *phydev, u32 regnum, u16 mask, u16 set);
 
+/**
+ * __phy_set_bits - Convenience function for setting bits in a PHY register
+ * @phydev: the phy_device struct
+ * @regnum: register number to write
+ * @val: bits to set
+ *
+ * The caller must have taken the MDIO bus lock.
+ */
+static inline int __phy_set_bits(struct phy_device *phydev, u32 regnum, u16 val)
+{
+	return __phy_modify(phydev, regnum, 0, val);
+}
+
+/**
+ * __phy_clear_bits - Convenience function for clearing bits in a PHY register
+ * @phydev: the phy_device struct
+ * @regnum: register number to write
+ * @val: bits to clear
+ *
+ * The caller must have taken the MDIO bus lock.
+ */
+static inline int __phy_clear_bits(struct phy_device *phydev, u32 regnum,
+				   u16 val)
+{
+	return __phy_modify(phydev, regnum, val, 0);
+}
+
+/**
+ * phy_set_bits - Convenience function for setting bits in a PHY register
+ * @phydev: the phy_device struct
+ * @regnum: register number to write
+ * @val: bits to set
+ */
+static inline int phy_set_bits(struct phy_device *phydev, u32 regnum, u16 val)
+{
+	return phy_modify(phydev, regnum, 0, val);
+}
+
+/**
+ * phy_clear_bits - Convenience function for clearing bits in a PHY register
+ * @phydev: the phy_device struct
+ * @regnum: register number to write
+ * @val: bits to clear
+ */
+static inline int phy_clear_bits(struct phy_device *phydev, u32 regnum, u16 val)
+{
+	return phy_modify(phydev, regnum, val, 0);
+}
+
 /**
  * phy_interrupt_is_valid - Convenience function for testing a given PHY irq
  * @phydev: the phy_device struct