net: stmmac: loongson1: use stmmac_get_phy_intf_sel()

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.

Note that this will allow GMII as well as MII as the phy_intf_sel
value is the same for both.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Link: https://patch.msgid.link/E1vIjTp-0000000DqtC-2DmI@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson1.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson1.c
index 5f9f66f..894ee66 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson1.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson1.c
@@ -140,14 +140,9 @@ static int ls1c_dwmac_syscon_init(struct platform_device *pdev, void *priv)
        struct regmap *regmap = dwmac->regmap;
        int phy_intf_sel;
 
-       switch (plat->phy_interface) {
-       case PHY_INTERFACE_MODE_MII:
-               phy_intf_sel = PHY_INTF_SEL_GMII_MII;
-               break;
-       case PHY_INTERFACE_MODE_RMII:
-               phy_intf_sel = PHY_INTF_SEL_RMII;
-               break;
-       default:
+       phy_intf_sel = stmmac_get_phy_intf_sel(plat->phy_interface);
+       if (phy_intf_sel != PHY_INTF_SEL_GMII_MII &&
+           phy_intf_sel != PHY_INTF_SEL_RMII) {
                dev_err(&pdev->dev, "Unsupported PHY-mode %u\n",
                        plat->phy_interface);
                return -EOPNOTSUPP;