[PATCH net-next v2 3/3] net: stmmac: meson8b: use stmmac_get_phy_intf_sel()

[Russell King (Oracle)]

Use stmmac_get_phy_intf_sel() to decode the PHY interface mode to the
phy_intf_sel value, validate the result and use that to set the
control register to select the operating mode for the DWMAC core.

Reviewed-by: Martin Blumenstingl <martin.blumenstingl at googlemail.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel at armlinux.org.uk>
---
 .../ethernet/stmicro/stmmac/dwmac-meson8b.c    | 18 ++++--------------
 1 file changed, 4 insertions(+), 14 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c
index 865cd6166134..e4d5c41294f4 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c
@@ -238,22 +238,12 @@ static int meson_axg_set_phy_mode(struct meson8b_dwmac *dwmac)
 {
 	int phy_intf_sel;
 
-	switch (dwmac->phy_mode) {
-	case PHY_INTERFACE_MODE_RGMII:
-	case PHY_INTERFACE_MODE_RGMII_RXID:
-	case PHY_INTERFACE_MODE_RGMII_ID:
-	case PHY_INTERFACE_MODE_RGMII_TXID:
-		/* enable RGMII mode */
-		phy_intf_sel = PHY_INTF_SEL_RGMII;
-		break;
-	case PHY_INTERFACE_MODE_RMII:
-		/* disable RGMII mode -> enables RMII mode */
-		phy_intf_sel = PHY_INTF_SEL_RMII;
-		break;
-	default:
+	phy_intf_sel = stmmac_get_phy_intf_sel(dwmac->phy_mode);
+	if (phy_intf_sel != PHY_INTF_SEL_RGMII &&
+	    phy_intf_sel != PHY_INTF_SEL_RMII) {
 		dev_err(dwmac->dev, "fail to set phy-mode %s\n",
 			phy_modes(dwmac->phy_mode));
-		return -EINVAL;
+		return phy_intf_sel < 0 ? phy_intf_sel : -EINVAL;
 	}
 
 	meson8b_dwmac_mask_bits(dwmac, PRG_ETH0, PRG_ETH0_EXT_PHY_MODE_MASK,
-- 
2.47.3