From: Quan Nguyen <qnguyen@apm.com>
Date: Wed, 10 May 2017 13:45:01 -0700
Subject: drivers: net: xgene: Use rgmii mdio mac access
Patch-mainline: v4.13-rc1
Git-commit: d09d3629b6f60bd5df5303eb2f4b26c52571388a
References: bsc#1033621

This patch switches to use rgmii mdio mac access routines if available,
as they share the same HW.

Signed-off-by: Quan Nguyen <qnguyen@apm.com>
Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/apm/xgene/xgene_enet_hw.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c b/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c
index 2050c58eddfd..47c5b754068d 100644
--- a/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c
+++ b/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c
@@ -277,6 +277,13 @@ void xgene_enet_wr_mac(struct xgene_enet_pdata *pdata, u32 wr_addr, u32 wr_data)
 	u8 wait = 10;
 	u32 done;
 
+	if (pdata->mdio_driver && ndev->phydev &&
+	    pdata->phy_mode == PHY_INTERFACE_MODE_RGMII) {
+		struct mii_bus *bus = ndev->phydev->mdio.bus;
+
+		return xgene_mdio_wr_mac(bus->priv, wr_addr, wr_data);
+	}
+
 	addr = pdata->mcx_mac_addr + MAC_ADDR_REG_OFFSET;
 	wr = pdata->mcx_mac_addr + MAC_WRITE_REG_OFFSET;
 	cmd = pdata->mcx_mac_addr + MAC_COMMAND_REG_OFFSET;
@@ -328,6 +335,13 @@ u32 xgene_enet_rd_mac(struct xgene_enet_pdata *pdata, u32 rd_addr)
 	u32 done, rd_data;
 	u8 wait = 10;
 
+	if (pdata->mdio_driver && pdata->ndev->phydev &&
+	    pdata->phy_mode == PHY_INTERFACE_MODE_RGMII) {
+		struct mii_bus *bus = pdata->ndev->phydev->mdio.bus;
+
+		return xgene_mdio_rd_mac(bus->priv, rd_addr);
+	}
+
 	addr = pdata->mcx_mac_addr + MAC_ADDR_REG_OFFSET;
 	rd = pdata->mcx_mac_addr + MAC_READ_REG_OFFSET;
 	cmd = pdata->mcx_mac_addr + MAC_COMMAND_REG_OFFSET;
-- 
2.12.3