net: stmmac: dwmac-socfpga: get the phy_mode with the dedicated helper

We enable/disable the sgmii_adapter in the .fix_mac_speed() ops based on
the phy_mode used in the plat_data. We currently get it with :

socfpga_dwmac
  ->dev
    ->drv_data
      ->netdev
        ->priv
	  ->stmmac_priv
	    ->plat
	      ->phy_interface

where we can get it with :

socfpga_dwmac
  ->plat_data
    ->phy_interface (done by socfpga_get_plat_phymode)

Use that helper here.

Note that we are also being passed a phy_interface_t from the
.fix_mac_speed() callback, provided by phylink.

We can handle that in the future when dynamic interface selection is
supported. We'd need to guarantee that we have a Lynx PCS to handle it.

Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/20260324092102.687082-5-maxime.chevallier@bootlin.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

1 files changed, 4 insertions, 5 deletions

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
index 629074dbbc15..ae40de2ed8eb 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
@@ -89,9 +89,9 @@ static void socfpga_dwmac_fix_mac_speed(void *bsp_priv,
 					unsigned int mode)
 {
 	struct socfpga_dwmac *dwmac = (struct socfpga_dwmac *)bsp_priv;
-	struct stmmac_priv *priv = netdev_priv(dev_get_drvdata(dwmac->dev));
-	void __iomem *splitter_base = dwmac->splitter_base;
 	void __iomem *sgmii_adapter_base = dwmac->sgmii_adapter_base;
+	phy_interface_t phymode = socfpga_get_plat_phymode(dwmac);
+	void __iomem *splitter_base = dwmac->splitter_base;
 	u32 val;
 
 	if (sgmii_adapter_base)
@@ -117,9 +117,8 @@ static void socfpga_dwmac_fix_mac_speed(void *bsp_priv,
 		writel(val, splitter_base + EMAC_SPLITTER_CTRL_REG);
 	}
 
-	if ((priv->plat->phy_interface == PHY_INTERFACE_MODE_SGMII ||
-	     priv->plat->phy_interface == PHY_INTERFACE_MODE_1000BASEX) &&
-	     sgmii_adapter_base)
+	if ((phymode == PHY_INTERFACE_MODE_SGMII ||
+	     phymode == PHY_INTERFACE_MODE_1000BASEX) && sgmii_adapter_base)
 		socfpga_sgmii_config(dwmac, true);
 }