r8169: use phy_resume/phy_suspend

Use phy_resume() / phy_suspend() instead of open coding this functionality.
The chip version specific differences are handled by the respective PHY
drivers.

The call to r8168_phy_power_down() in r8168_pll_power_down() can be
removed because phylib takes care now. The relevant scenarios are:
- rtl8169_close(): phy_disconnect() powers down PHY
- suspend: mdio_bus_phy_suspend() takes care
- runtime-suspend: WoL is active, don't suspend PHY
- rtl_shutdown(): no need to power down PHY

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/realtek/r8169.c

@@ -4450,47 +4450,6 @@ static bool rtl_wol_pll_power_down(struct rtl8169_private *tp)
 	return true;
 }
 
-static void r8168_phy_power_up(struct rtl8169_private *tp)
-{
-	rtl_writephy(tp, 0x1f, 0x0000);
-	switch (tp->mac_version) {
-	case RTL_GIGA_MAC_VER_11:
-	case RTL_GIGA_MAC_VER_12:
-	case RTL_GIGA_MAC_VER_17 ... RTL_GIGA_MAC_VER_28:
-	case RTL_GIGA_MAC_VER_31:
-		rtl_writephy(tp, 0x0e, 0x0000);
-		break;
-	default:
-		break;
-	}
-	rtl_writephy(tp, MII_BMCR, BMCR_ANENABLE);
-
-	/* give MAC/PHY some time to resume */
-	msleep(20);
-}
-
-static void r8168_phy_power_down(struct rtl8169_private *tp)
-{
-	rtl_writephy(tp, 0x1f, 0x0000);
-	switch (tp->mac_version) {
-	case RTL_GIGA_MAC_VER_32:
-	case RTL_GIGA_MAC_VER_33:
-	case RTL_GIGA_MAC_VER_40:
-	case RTL_GIGA_MAC_VER_41:
-		rtl_writephy(tp, MII_BMCR, BMCR_ANENABLE | BMCR_PDOWN);
-		break;
-
-	case RTL_GIGA_MAC_VER_11:
-	case RTL_GIGA_MAC_VER_12:
-	case RTL_GIGA_MAC_VER_17 ... RTL_GIGA_MAC_VER_28:
-	case RTL_GIGA_MAC_VER_31:
-		rtl_writephy(tp, 0x0e, 0x0200);
-	default:
-		rtl_writephy(tp, MII_BMCR, BMCR_PDOWN);
-		break;
-	}
-}
-
 static void r8168_pll_power_down(struct rtl8169_private *tp)
 {
 	if (r8168_check_dash(tp))
@@ -4503,8 +4462,6 @@ static void r8168_pll_power_down(struct rtl8169_private *tp)
 	if (rtl_wol_pll_power_down(tp))
 		return;
 
-	r8168_phy_power_down(tp);
-
 	switch (tp->mac_version) {
 	case RTL_GIGA_MAC_VER_25 ... RTL_GIGA_MAC_VER_33:
 	case RTL_GIGA_MAC_VER_37:
@@ -4556,7 +4513,9 @@ static void r8168_pll_power_up(struct rtl8169_private *tp)
 		break;
 	}
 
-	r8168_phy_power_up(tp);
+	phy_resume(tp->dev->phydev);
+	/* give MAC/PHY some time to resume */
+	msleep(20);
 }
 
 static void rtl_pll_power_down(struct rtl8169_private *tp)
@@ -7472,6 +7431,9 @@ static int r8169_mdio_register(struct rtl8169_private *tp)
 		return -ENODEV;
 	}
 
+	/* PHY will be woken up in rtl_open() */
+	phy_suspend(phydev);
+
 	tp->mii_bus = new_bus;
 
 	return 0;