r8169: improve RTL8168d PHY initialization

Certain parts of the PHY initialization are the same for sub versions
1 and 2 of RTL8168d. So let's factor this out to simplify the code.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/realtek/r8169.c

@@ -2910,50 +2910,59 @@ static void rtl8168c_4_hw_phy_config(struct rtl8169_private *tp)
 	rtl8168c_3_hw_phy_config(tp);
 }
 
-static void rtl8168d_1_hw_phy_config(struct rtl8169_private *tp)
-{
-	static const struct phy_reg phy_reg_init_0[] = {
-		/* Channel Estimation */
-		{ 0x1f, 0x0001 },
-		{ 0x06, 0x4064 },
-		{ 0x07, 0x2863 },
-		{ 0x08, 0x059c },
-		{ 0x09, 0x26b4 },
-		{ 0x0a, 0x6a19 },
-		{ 0x0b, 0xdcc8 },
-		{ 0x10, 0xf06d },
-		{ 0x14, 0x7f68 },
-		{ 0x18, 0x7fd9 },
-		{ 0x1c, 0xf0ff },
-		{ 0x1d, 0x3d9c },
-		{ 0x1f, 0x0003 },
-		{ 0x12, 0xf49f },
-		{ 0x13, 0x070b },
-		{ 0x1a, 0x05ad },
-		{ 0x14, 0x94c0 },
+static const struct phy_reg rtl8168d_1_phy_reg_init_0[] = {
+	/* Channel Estimation */
+	{ 0x1f, 0x0001 },
+	{ 0x06, 0x4064 },
+	{ 0x07, 0x2863 },
+	{ 0x08, 0x059c },
+	{ 0x09, 0x26b4 },
+	{ 0x0a, 0x6a19 },
+	{ 0x0b, 0xdcc8 },
+	{ 0x10, 0xf06d },
+	{ 0x14, 0x7f68 },
+	{ 0x18, 0x7fd9 },
+	{ 0x1c, 0xf0ff },
+	{ 0x1d, 0x3d9c },
+	{ 0x1f, 0x0003 },
+	{ 0x12, 0xf49f },
+	{ 0x13, 0x070b },
+	{ 0x1a, 0x05ad },
+	{ 0x14, 0x94c0 },
 
-		/*
-		 * Tx Error Issue
-		 * Enhance line driver power
-		 */
-		{ 0x1f, 0x0002 },
-		{ 0x06, 0x5561 },
-		{ 0x1f, 0x0005 },
-		{ 0x05, 0x8332 },
-		{ 0x06, 0x5561 },
+	/*
+	 * Tx Error Issue
+	 * Enhance line driver power
+	 */
+	{ 0x1f, 0x0002 },
+	{ 0x06, 0x5561 },
+	{ 0x1f, 0x0005 },
+	{ 0x05, 0x8332 },
+	{ 0x06, 0x5561 },
 
-		/*
-		 * Can not link to 1Gbps with bad cable
-		 * Decrease SNR threshold form 21.07dB to 19.04dB
-		 */
-		{ 0x1f, 0x0001 },
-		{ 0x17, 0x0cc0 },
+	/*
+	 * Can not link to 1Gbps with bad cable
+	 * Decrease SNR threshold form 21.07dB to 19.04dB
+	 */
+	{ 0x1f, 0x0001 },
+	{ 0x17, 0x0cc0 },
 
-		{ 0x1f, 0x0000 },
-		{ 0x0d, 0xf880 }
-	};
+	{ 0x1f, 0x0000 },
+	{ 0x0d, 0xf880 }
+};
 
-	rtl_writephy_batch(tp, phy_reg_init_0);
+static const struct phy_reg rtl8168d_1_phy_reg_init_1[] = {
+	{ 0x1f, 0x0002 },
+	{ 0x05, 0x669a },
+	{ 0x1f, 0x0005 },
+	{ 0x05, 0x8330 },
+	{ 0x06, 0x669a },
+	{ 0x1f, 0x0002 }
+};
+
+static void rtl8168d_1_hw_phy_config(struct rtl8169_private *tp)
+{
+	rtl_writephy_batch(tp, rtl8168d_1_phy_reg_init_0);
 
 	/*
 	 * Rx Error Issue
@@ -2964,17 +2973,9 @@ static void rtl8168d_1_hw_phy_config(struct rtl8169_private *tp)
 	rtl_w0w1_phy(tp, 0x0c, 0xa200, 0x5d00);
 
 	if (rtl8168d_efuse_read(tp, 0x01) == 0xb1) {
-		static const struct phy_reg phy_reg_init[] = {
-			{ 0x1f, 0x0002 },
-			{ 0x05, 0x669a },
-			{ 0x1f, 0x0005 },
-			{ 0x05, 0x8330 },
-			{ 0x06, 0x669a },
-			{ 0x1f, 0x0002 }
-		};
 		int val;
 
-		rtl_writephy_batch(tp, phy_reg_init);
+		rtl_writephy_batch(tp, rtl8168d_1_phy_reg_init_1);
 
 		val = rtl_readphy(tp, 0x0d);
 
@@ -3023,62 +3024,12 @@ static void rtl8168d_1_hw_phy_config(struct rtl8169_private *tp)
 
 static void rtl8168d_2_hw_phy_config(struct rtl8169_private *tp)
 {
-	static const struct phy_reg phy_reg_init_0[] = {
-		/* Channel Estimation */
-		{ 0x1f, 0x0001 },
-		{ 0x06, 0x4064 },
-		{ 0x07, 0x2863 },
-		{ 0x08, 0x059c },
-		{ 0x09, 0x26b4 },
-		{ 0x0a, 0x6a19 },
-		{ 0x0b, 0xdcc8 },
-		{ 0x10, 0xf06d },
-		{ 0x14, 0x7f68 },
-		{ 0x18, 0x7fd9 },
-		{ 0x1c, 0xf0ff },
-		{ 0x1d, 0x3d9c },
-		{ 0x1f, 0x0003 },
-		{ 0x12, 0xf49f },
-		{ 0x13, 0x070b },
-		{ 0x1a, 0x05ad },
-		{ 0x14, 0x94c0 },
-
-		/*
-		 * Tx Error Issue
-		 * Enhance line driver power
-		 */
-		{ 0x1f, 0x0002 },
-		{ 0x06, 0x5561 },
-		{ 0x1f, 0x0005 },
-		{ 0x05, 0x8332 },
-		{ 0x06, 0x5561 },
-
-		/*
-		 * Can not link to 1Gbps with bad cable
-		 * Decrease SNR threshold form 21.07dB to 19.04dB
-		 */
-		{ 0x1f, 0x0001 },
-		{ 0x17, 0x0cc0 },
-
-		{ 0x1f, 0x0000 },
-		{ 0x0d, 0xf880 }
-	};
-
-	rtl_writephy_batch(tp, phy_reg_init_0);
+	rtl_writephy_batch(tp, rtl8168d_1_phy_reg_init_0);
 
 	if (rtl8168d_efuse_read(tp, 0x01) == 0xb1) {
-		static const struct phy_reg phy_reg_init[] = {
-			{ 0x1f, 0x0002 },
-			{ 0x05, 0x669a },
-			{ 0x1f, 0x0005 },
-			{ 0x05, 0x8330 },
-			{ 0x06, 0x669a },
-
-			{ 0x1f, 0x0002 }
-		};
 		int val;
 
-		rtl_writephy_batch(tp, phy_reg_init);
+		rtl_writephy_batch(tp, rtl8168d_1_phy_reg_init_1);
 
 		val = rtl_readphy(tp, 0x0d);
 		if ((val & 0x00ff) != 0x006c) {