phy: Add an mdio_device structure

Not all devices attached to an MDIO bus are phys. So add an
mdio_device structure to represent the generic parts of an mdio
device, and place this structure into the phy_device.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 9 insertions, 0 deletions

diff --git a/include/linux/mdio.h b/include/linux/mdio.h
index 0d073c23c10d..94f9f1491cde 100644
--- a/include/linux/mdio.h
+++ b/include/linux/mdio.h
@@ -13,6 +13,15 @@
 
 struct mii_bus;
 
+struct mdio_device {
+        struct device dev;
+
+        struct mii_bus *bus;
+        /* Bus address of the MDIO device (0-31) */
+        int addr;
+};
+#define to_mdio_device(d) container_of(d, struct mdio_device, dev)
+
 static inline bool mdio_phy_id_is_c45(int phy_id)
 {
         return (phy_id & MDIO_PHY_ID_C45) && !(phy_id & ~MDIO_PHY_ID_C45_MASK);