net: phy/vitesse: Add support for VSC8514 phy module

This patch adds support for VSC8514 PHY module which can be
found on Freescale's T1040RDB boards.

Signed-off-by: Arpit Goel <B44344@freescale.com>
Signed-off-by: Bhupesh Sharma <bhupesh.sharma@freescale.com>

drivers/net/phy/vitesse.c

@@ -49,6 +49,15 @@
 #define MIIM_VSC8574_18G_QSGMII		0x80e0
 #define MIIM_VSC8574_18G_CMDSTAT	0x8000
 
+/* Vitesse VSC8514 control register */
+#define MIIM_VSC8514_GENERAL18		0x12
+#define MIIM_VSC8514_GENERAL19		0x13
+#define MIIM_VSC8514_GENERAL23		0x17
+
+/* Vitesse VSC8514 gerenal purpose register 18 */
+#define MIIM_VSC8514_18G_QSGMII		0x80e0
+#define MIIM_VSC8514_18G_CMDSTAT	0x8000
+
 /* CIS8201 */
 static int vitesse_config(struct phy_device *phydev)
 {
@@ -148,7 +157,7 @@ static int vsc8601_config(struct phy_device *phydev)
 static int vsc8574_config(struct phy_device *phydev)
 {
 	u32 val;
-	/* configure regiser 19G for MAC */
+	/* configure register 19G for MAC */
 	phy_write(phydev, MDIO_DEVAD_NONE, PHY_EXT_PAGE_ACCESS,
 		  PHY_EXT_PAGE_ACCESS_GENERAL);
 
@@ -188,6 +197,53 @@ static int vsc8574_config(struct phy_device *phydev)
 	return 0;
 }
 
+static int vsc8514_config(struct phy_device *phydev)
+{
+	u32 val;
+	int timeout = 1000000;
+
+	/* configure register to access 19G */
+	phy_write(phydev, MDIO_DEVAD_NONE, PHY_EXT_PAGE_ACCESS,
+		  PHY_EXT_PAGE_ACCESS_GENERAL);
+
+	val = phy_read(phydev, MDIO_DEVAD_NONE, MIIM_VSC8514_GENERAL19);
+	if (phydev->interface == PHY_INTERFACE_MODE_QSGMII) {
+		/* set bit 15:14 to '01' for QSGMII mode */
+		val = (val & 0x3fff) | (1 << 14);
+		phy_write(phydev, MDIO_DEVAD_NONE,
+			  MIIM_VSC8514_GENERAL19, val);
+		/* Enable 4 ports MAC QSGMII */
+		phy_write(phydev, MDIO_DEVAD_NONE, MIIM_VSC8514_GENERAL18,
+			  MIIM_VSC8514_18G_QSGMII);
+	} else {
+		/*TODO Add SGMII functionality once spec sheet
+		 * for VSC8514 defines complete functionality
+		 */
+	}
+
+	val = phy_read(phydev, MDIO_DEVAD_NONE, MIIM_VSC8514_GENERAL18);
+	/* When bit 15 is cleared the command has completed */
+	while ((val & MIIM_VSC8514_18G_CMDSTAT) && timeout--)
+		val = phy_read(phydev, MDIO_DEVAD_NONE, MIIM_VSC8514_GENERAL18);
+
+	if (0 == timeout) {
+		printf("PHY 8514 config failed\n");
+		return -1;
+	}
+
+	phy_write(phydev, MDIO_DEVAD_NONE, PHY_EXT_PAGE_ACCESS, 0);
+
+	/* configure register to access 23 */
+	val = phy_read(phydev, MDIO_DEVAD_NONE, MIIM_VSC8514_GENERAL23);
+	/* set bits 10:8 to '000' */
+	val = (val & 0xf8ff);
+	phy_write(phydev, MDIO_DEVAD_NONE, MIIM_VSC8514_GENERAL23, val);
+
+	genphy_config_aneg(phydev);
+
+	return 0;
+}
+
 static struct phy_driver VSC8211_driver = {
 	.name	= "Vitesse VSC8211",
 	.uid	= 0xfc4b0,
@@ -238,6 +294,16 @@ static struct phy_driver VSC8574_driver = {
 	.shutdown = &genphy_shutdown,
 };
 
+static struct phy_driver VSC8514_driver = {
+	.name = "Vitesse VSC8514",
+	.uid = 0x70570,
+	.mask = 0xffff0,
+	.features = PHY_GBIT_FEATURES,
+	.config = &vsc8514_config,
+	.startup = &vitesse_startup,
+	.shutdown = &genphy_shutdown,
+};
+
 static struct phy_driver VSC8601_driver = {
 	.name = "Vitesse VSC8601",
 	.uid = 0x70420,
@@ -298,6 +364,7 @@ int phy_vitesse_init(void)
 	phy_register(&VSC8211_driver);
 	phy_register(&VSC8221_driver);
 	phy_register(&VSC8574_driver);
+	phy_register(&VSC8514_driver);
 	phy_register(&VSC8662_driver);
 	phy_register(&cis8201_driver);
 	phy_register(&cis8204_driver);