netdev/of/phy: New function: of_mdio_find_bus().
authorDavid Daney <david.daney@cavium.com>
Wed, 2 May 2012 15:16:37 +0000 (15:16 +0000)
committerDavid S. Miller <davem@davemloft.net>
Tue, 8 May 2012 02:58:09 +0000 (22:58 -0400)
commit251060220021283eef3652145a41f5b26db97ce5
treee04d2a1695e19e959873cf8a6d571a925ca59cc5
parent7dc2ce5f12cb5d166140820d5063027dc2449ac1
netdev/of/phy: New function: of_mdio_find_bus().

Add of_mdio_find_bus() which allows an mii_bus to be located given its
associated the device tree node.

This is needed by the follow-on patch to add a driver for MDIO bus
multiplexers.

The of_mdiobus_register() function is modified so that the device tree
node is recorded in the mii_bus.  Then we can find it again by
iterating over all mdio_bus_class devices.

Because the OF device tree has now become an integral part of the
kernel, this can live in mdio_bus.c (which contains the needed
mdio_bus_class structure) instead of of_mdio.c.

Signed-off-by: David Daney <david.daney@cavium.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/phy/mdio_bus.c
drivers/of/of_mdio.c
include/linux/of_mdio.h