phylib: give mdio buses a device tree presence

Introduce the mdio_bus class, and give each 'struct mii_bus' its own
'struct device', so that mii_bus objects are represented in the device
tree and can be found by querying the device tree.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 8 insertions, 0 deletions

diff --git a/include/linux/phy.h b/include/linux/phy.h
index ca4a83c4c537..891f27f9137e 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -100,6 +100,13 @@ struct mii_bus {
         struct mutex mdio_lock;
 
         struct device *parent;
+        enum {
+                MDIOBUS_ALLOCATED = 1,
+                MDIOBUS_REGISTERED,
+                MDIOBUS_UNREGISTERED,
+                MDIOBUS_RELEASED,
+        } state;
+        struct device dev;
 
         /* list of all PHYs on bus */
         struct phy_device *phy_map[PHY_MAX_ADDR];
@@ -113,6 +120,7 @@ struct mii_bus {
          */
         int *irq;
 };
+#define to_mii_bus(d) container_of(d, struct mii_bus, dev)
 
 #define PHY_INTERRUPT_DISABLED  0x0
 #define PHY_INTERRUPT_ENABLED   0x80000000