fm-eth: add function fm_info_get_phy_address()

Function fm_info_get_phy_address() returns the PHY address for a given
Fman port.  This is handy when the MDIO code needs to fixup the Ethernet
nodes in the device tree to point to PHY nodes for a specific PHY address.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/drivers/net/fm/init.c b/drivers/net/fm/init.c
index 9834cd9..8a5311c 100644
--- a/drivers/net/fm/init.c
+++ b/drivers/net/fm/init.c
@@ -155,6 +155,22 @@ void fm_info_set_phy_address(enum fm_port port, int address)
 }
 
 /*
+ * Returns the PHY address for a given Fman port
+ *
+ * The port must be set via a prior call to fm_info_set_phy_address().
+ * A negative error code is returned if the port is invalid.
+ */
+int fm_info_get_phy_address(enum fm_port port)
+{
+	int i = fm_port_to_index(port);
+
+	if (i == -1)
+		return -1;
+
+	return fm_info[i].phy_addr;
+}
+
+/*
  * Returns the type of the data interface between the given MAC and its PHY.
  * This is typically determined by the RCW.
  */