net: phy: port phy_interface_is_rgmii() from kernel

and remove duplicates from other drivers

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 21 insertions, 0 deletions

diff --git a/include/linux/phy.h b/include/linux/phy.h
index a9fdf44f1a..eec1332c9d 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -353,6 +353,27 @@ static inline int phy_clear_bits(struct phy_device *phydev, u32 regnum, u16 val)
 	return phy_modify(phydev, regnum, val, 0);
 }
 
+/**
+ * phy_interface_mode_is_rgmii - Convenience function for testing if a
+ * PHY interface mode is RGMII (all variants)
+ * @mode: the phy_interface_t enum
+ */
+static inline bool phy_interface_mode_is_rgmii(phy_interface_t mode)
+{
+	return mode >= PHY_INTERFACE_MODE_RGMII &&
+		mode <= PHY_INTERFACE_MODE_RGMII_TXID;
+};
+
+/**
+ * phy_interface_is_rgmii - Convenience function for testing if a PHY interface
+ * is RGMII (all variants)
+ * @phydev: the phy_device struct
+ */
+static inline bool phy_interface_is_rgmii(struct phy_device *phydev)
+{
+	return phy_interface_mode_is_rgmii(phydev->interface);
+};
+
 int phy_device_connect(struct eth_device *dev, struct mii_bus *bus, int addr,
 		       void (*adjust_link) (struct eth_device *edev),
 		       u32 flags, phy_interface_t interface);