net: stmmac: dwmac-stm32: Clean up the debug prints

Use dev_err()/dev_dbg() and phy_modes() to print PHY mode instead of
pr_debug() and hand-written PHY mode decoding. This way, each debug
print has associated device with it and duplicated mode decoding is
removed.
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Christophe Roullier <christophe.roullier@foss.st.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

drivers/net/ethernet/stmicro/stmmac/dwmac-stm32.c

@@ -228,19 +228,16 @@ static int stm32mp1_configure_pmcr(struct plat_stmmacenet_data *plat_dat)
 	switch (plat_dat->mac_interface) {
 	case PHY_INTERFACE_MODE_MII:
 		val = SYSCFG_PMCR_ETH_SEL_MII;
-		pr_debug("SYSCFG init : PHY_INTERFACE_MODE_MII\n");
 		break;
 	case PHY_INTERFACE_MODE_GMII:
 		val = SYSCFG_PMCR_ETH_SEL_GMII;
 		if (dwmac->enable_eth_ck)
 			val |= SYSCFG_PMCR_ETH_CLK_SEL;
-		pr_debug("SYSCFG init : PHY_INTERFACE_MODE_GMII\n");
 		break;
 	case PHY_INTERFACE_MODE_RMII:
 		val = SYSCFG_PMCR_ETH_SEL_RMII;
 		if (dwmac->enable_eth_ck)
 			val |= SYSCFG_PMCR_ETH_REF_CLK_SEL;
-		pr_debug("SYSCFG init : PHY_INTERFACE_MODE_RMII\n");
 		break;
 	case PHY_INTERFACE_MODE_RGMII:
 	case PHY_INTERFACE_MODE_RGMII_ID:
@@ -249,15 +246,16 @@ static int stm32mp1_configure_pmcr(struct plat_stmmacenet_data *plat_dat)
 		val = SYSCFG_PMCR_ETH_SEL_RGMII;
 		if (dwmac->enable_eth_ck)
 			val |= SYSCFG_PMCR_ETH_CLK_SEL;
-		pr_debug("SYSCFG init : PHY_INTERFACE_MODE_RGMII\n");
 		break;
 	default:
-		pr_debug("SYSCFG init :  Do not manage %d interface\n",
-			 plat_dat->mac_interface);
+		dev_err(dwmac->dev, "Mode %s not supported",
+			phy_modes(plat_dat->mac_interface));
 		/* Do not manage others interfaces */
 		return -EINVAL;
 	}
 
+	dev_dbg(dwmac->dev, "Mode %s", phy_modes(plat_dat->mac_interface));
+
 	/* Need to update PMCCLRR (clear register) */
 	regmap_write(dwmac->regmap, reg + SYSCFG_PMCCLRR_OFFSET,
 		     dwmac->ops->syscfg_eth_mask);
@@ -291,19 +289,19 @@ static int stm32mcu_set_mode(struct plat_stmmacenet_data *plat_dat)
 	switch (plat_dat->mac_interface) {
 	case PHY_INTERFACE_MODE_MII:
 		val = SYSCFG_MCU_ETH_SEL_MII;
-		pr_debug("SYSCFG init : PHY_INTERFACE_MODE_MII\n");
 		break;
 	case PHY_INTERFACE_MODE_RMII:
 		val = SYSCFG_MCU_ETH_SEL_RMII;
-		pr_debug("SYSCFG init : PHY_INTERFACE_MODE_RMII\n");
 		break;
 	default:
-		pr_debug("SYSCFG init :  Do not manage %d interface\n",
-			 plat_dat->mac_interface);
+		dev_err(dwmac->dev, "Mode %s not supported",
+			phy_modes(plat_dat->mac_interface));
 		/* Do not manage others interfaces */
 		return -EINVAL;
 	}
 
+	dev_dbg(dwmac->dev, "Mode %s", phy_modes(plat_dat->mac_interface));
+
 	return regmap_update_bits(dwmac->regmap, reg,
 				 dwmac->ops->syscfg_eth_mask, val << 23);
 }