From: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Date: Tue, 11 Nov 2025 08:12:23 +0000 (+0000)
Subject: net: stmmac: starfive: use stmmac_get_phy_intf_sel()
X-Git-Tag: v6.19-rc1~170^2~178^2~5
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=d22045997b538aaf801b849dfa6369d76f0152c0;p=thirdparty%2Fkernel%2Flinux.git

net: stmmac: starfive: 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.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Emil Renner Berthing <emil.renner.berthing@canonical.com>
Link: https://patch.msgid.link/E1vIjUF-0000000Dqth-0gwD@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c
index 1ef72576c6f1f..16b955a6d77ba 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c
@@ -15,8 +15,6 @@
 
 #include "stmmac_platform.h"
 
-#define STARFIVE_DWMAC_PHY_INFT_RGMII		PHY_INTF_SEL_RGMII
-#define STARFIVE_DWMAC_PHY_INFT_RMII		PHY_INTF_SEL_RMII
 #define STARFIVE_DWMAC_PHY_INFT_FIELD		0x7U
 
 #define JH7100_SYSMAIN_REGISTER49_DLYCHAIN	0xc8
@@ -35,25 +33,15 @@ static int starfive_dwmac_set_mode(struct plat_stmmacenet_data *plat_dat)
 	struct starfive_dwmac *dwmac = plat_dat->bsp_priv;
 	struct regmap *regmap;
 	unsigned int args[2];
-	unsigned int mode;
+	int phy_intf_sel;
 	int err;
 
-	switch (plat_dat->phy_interface) {
-	case PHY_INTERFACE_MODE_RMII:
-		mode = STARFIVE_DWMAC_PHY_INFT_RMII;
-		break;
-
-	case PHY_INTERFACE_MODE_RGMII:
-	case PHY_INTERFACE_MODE_RGMII_ID:
-	case PHY_INTERFACE_MODE_RGMII_RXID:
-	case PHY_INTERFACE_MODE_RGMII_TXID:
-		mode = STARFIVE_DWMAC_PHY_INFT_RGMII;
-		break;
-
-	default:
+	phy_intf_sel = stmmac_get_phy_intf_sel(plat_dat->phy_interface);
+	if (phy_intf_sel != PHY_INTF_SEL_RGMII &&
+	    phy_intf_sel != PHY_INTF_SEL_RMII) {
 		dev_err(dwmac->dev, "unsupported interface %s\n",
 			phy_modes(plat_dat->phy_interface));
-		return -EINVAL;
+		return phy_intf_sel < 0 ? phy_intf_sel : -EINVAL;
 	}
 
 	regmap = syscon_regmap_lookup_by_phandle_args(dwmac->dev->of_node,
@@ -65,7 +53,7 @@ static int starfive_dwmac_set_mode(struct plat_stmmacenet_data *plat_dat)
 	/* args[0]:offset  args[1]: shift */
 	err = regmap_update_bits(regmap, args[0],
 				 STARFIVE_DWMAC_PHY_INFT_FIELD << args[1],
-				 mode << args[1]);
+				 phy_intf_sel << args[1]);
 	if (err)
 		return dev_err_probe(dwmac->dev, err, "error setting phy mode\n");