arm: mvebu: a38x: Allocate bb_miiphy using bb_miiphy_alloc() and fill in callbacks

Allocate bb_miiphy using bb_miiphy_alloc() and fill in callbacks
currently listed in bb_miiphy_buses[] array. This is a temporary
duplication of assignment to avoid breakage, which will be removed
in follow up patches. At this point, the bb_miiphy callbacks can
reach these accessors by doing container_of() on struct mii_dev.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Reviewed-by: Paul Barker <paul.barker.ct@bp.renesas.com>
diff --git a/board/gdsys/a38x/ihs_phys.c b/board/gdsys/a38x/ihs_phys.c
index 86708ee..a121898 100644
--- a/board/gdsys/a38x/ihs_phys.c
+++ b/board/gdsys/a38x/ihs_phys.c
@@ -221,22 +221,35 @@
 
 int register_miiphy_bus(uint k, struct mii_dev **bus)
 {
-	int retval;
-	struct mii_dev *mdiodev = mdio_alloc();
+	struct bb_miiphy_bus *bb_miiphy = bb_miiphy_alloc();
+	struct mii_dev *mdiodev;
 	char *name = bb_miiphy_buses[k].name;
+	int retval;
 
-	if (!mdiodev)
+	if (!bb_miiphy)
 		return -ENOMEM;
+
+	mdiodev = &bb_miiphy->mii;
 	strlcpy(mdiodev->name, name, MDIO_NAME_LEN);
 	mdiodev->read = bb_miiphy_read;
 	mdiodev->write = bb_miiphy_write;
 
+	/* Copy the bus accessors, name and private data */
+	bb_miiphy->mdio_active = mii_mdio_active;
+	bb_miiphy->mdio_tristate = mii_mdio_tristate;
+	bb_miiphy->set_mdio = mii_set_mdio;
+	bb_miiphy->get_mdio = mii_get_mdio;
+	bb_miiphy->set_mdc = mii_set_mdc;
+	bb_miiphy->delay = mii_delay;
+	strlcpy(bb_miiphy->name, name, MDIO_NAME_LEN);
+	bb_miiphy->priv = &gpio_mii_set[k];
+
 	retval = mdio_register(mdiodev);
 	if (retval < 0)
 		return retval;
 	*bus = miiphy_get_dev_by_name(name);
 
-	return mii_mdio_init(&bb_miiphy_buses[k]);
+	return mii_mdio_init(bb_miiphy);
 }
 
 struct porttype *get_porttype(uint octo_phy_mask, uint k)