net: phy: qcom: move the WoL function to shared library

Move the WoL (Wake-on-LAN) functionality to a shared library to enable
its reuse by the QCA808X PHY driver, incorporating support for WoL
functionality similar to the implementation in at8031_set_wol().

Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: Luo Jie <quic_luoj@quicinc.com>
Link: https://patch.msgid.link/20250704-qcom_phy_wol_support-v1-1-053342b1538d@quicinc.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Author: Luo Jie

drivers/net/phy/qcom/at803x.c

@@ -26,9 +26,6 @@
 
 #define AT803X_LED_CONTROL			0x18
 
-#define AT803X_PHY_MMD3_WOL_CTRL		0x8012
-#define AT803X_WOL_EN				BIT(5)
-
 #define AT803X_REG_CHIP_CONFIG			0x1f
 #define AT803X_BT_BX_REG_SEL			0x8000
 
@@ -866,30 +863,6 @@ static int at8031_config_init(struct phy_device *phydev)
 	return at803x_config_init(phydev);
 }
 
-static int at8031_set_wol(struct phy_device *phydev,
-			  struct ethtool_wolinfo *wol)
-{
-	int ret;
-
-	/* First setup MAC address and enable WOL interrupt */
-	ret = at803x_set_wol(phydev, wol);
-	if (ret)
-		return ret;
-
-	if (wol->wolopts & WAKE_MAGIC)
-		/* Enable WOL function for 1588 */
-		ret = phy_modify_mmd(phydev, MDIO_MMD_PCS,
-				     AT803X_PHY_MMD3_WOL_CTRL,
-				     0, AT803X_WOL_EN);
-	else
-		/* Disable WoL function for 1588 */
-		ret = phy_modify_mmd(phydev, MDIO_MMD_PCS,
-				     AT803X_PHY_MMD3_WOL_CTRL,
-				     AT803X_WOL_EN, 0);
-
-	return ret;
-}
-
 static int at8031_config_intr(struct phy_device *phydev)
 {
 	struct at803x_priv *priv = phydev->priv;

drivers/net/phy/qcom/qcom-phy-lib.c

@@ -115,6 +115,31 @@ int at803x_set_wol(struct phy_device *phydev,
 }
 EXPORT_SYMBOL_GPL(at803x_set_wol);
 
+int at8031_set_wol(struct phy_device *phydev,
+		   struct ethtool_wolinfo *wol)
+{
+	int ret;
+
+	/* First setup MAC address and enable WOL interrupt */
+	ret = at803x_set_wol(phydev, wol);
+	if (ret)
+		return ret;
+
+	if (wol->wolopts & WAKE_MAGIC)
+		/* Enable WOL function for 1588 */
+		ret = phy_modify_mmd(phydev, MDIO_MMD_PCS,
+				     AT803X_PHY_MMD3_WOL_CTRL,
+				     0, AT803X_WOL_EN);
+	else
+		/* Disable WoL function for 1588 */
+		ret = phy_modify_mmd(phydev, MDIO_MMD_PCS,
+				     AT803X_PHY_MMD3_WOL_CTRL,
+				     AT803X_WOL_EN, 0);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(at8031_set_wol);
+
 void at803x_get_wol(struct phy_device *phydev,
 		    struct ethtool_wolinfo *wol)
 {

drivers/net/phy/qcom/qcom.h

@@ -172,6 +172,9 @@
 #define AT803X_LOC_MAC_ADDR_16_31_OFFSET	0x804B
 #define AT803X_LOC_MAC_ADDR_32_47_OFFSET	0x804A
 
+#define AT803X_PHY_MMD3_WOL_CTRL		0x8012
+#define AT803X_WOL_EN				BIT(5)
+
 #define AT803X_DEBUG_ADDR			0x1D
 #define AT803X_DEBUG_DATA			0x1E
 
@@ -215,6 +218,8 @@ int at803x_debug_reg_mask(struct phy_device *phydev, u16 reg,
 int at803x_debug_reg_write(struct phy_device *phydev, u16 reg, u16 data);
 int at803x_set_wol(struct phy_device *phydev,
 		   struct ethtool_wolinfo *wol);
+int at8031_set_wol(struct phy_device *phydev,
+		   struct ethtool_wolinfo *wol);
 void at803x_get_wol(struct phy_device *phydev,
 		    struct ethtool_wolinfo *wol);
 int at803x_ack_interrupt(struct phy_device *phydev);