phylib: add support for aquantia PHYs

This patch supports AQ1202, AQ2104, AQR105 PHY.

Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: York Sun <yorksun@freescale.com>

drivers/net/phy/Makefile

@@ -11,6 +11,7 @@ obj-$(CONFIG_MV88E6352_SWITCH) += mv88e6352.o
 
 obj-$(CONFIG_PHYLIB) += phy.o
 obj-$(CONFIG_PHYLIB_10G) += generic_10g.o
+obj-$(CONFIG_PHY_AQUANTIA) += aquantia.o
 obj-$(CONFIG_PHY_ATHEROS) += atheros.o
 obj-$(CONFIG_PHY_BROADCOM) += broadcom.o
 obj-$(CONFIG_PHY_CORTINA) += cortina.o

drivers/net/phy/aquantia.c

@@ -0,0 +1,156 @@
+/*
+ * Aquantia PHY drivers
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ *
+ * Copyright 2014 Freescale Semiconductor, Inc.
+ */
+#include <config.h>
+#include <common.h>
+#include <phy.h>
+
+#ifndef CONFIG_PHYLIB_10G
+#error The Aquantia PHY needs 10G support
+#endif
+
+#define AQUNTIA_10G_CTL		0x20
+#define AQUNTIA_VENDOR_P1	0xc400
+
+#define AQUNTIA_SPEED_LSB_MASK	0x2000
+#define AQUNTIA_SPEED_MSB_MASK	0x40
+
+int aquantia_config(struct phy_device *phydev)
+{
+	u32 val = phy_read(phydev, MDIO_MMD_PMAPMD, MII_BMCR);
+
+	if (phydev->interface == PHY_INTERFACE_MODE_SGMII) {
+		/* 1000BASE-T mode */
+		phydev->advertising = SUPPORTED_1000baseT_Full;
+		phydev->supported = phydev->advertising;
+
+		val = (val & ~AQUNTIA_SPEED_LSB_MASK) | AQUNTIA_SPEED_MSB_MASK;
+		phy_write(phydev, MDIO_MMD_PMAPMD, MII_BMCR, val);
+	} else if (phydev->interface == PHY_INTERFACE_MODE_XGMII) {
+		/* 10GBASE-T mode */
+		phydev->advertising = SUPPORTED_10000baseT_Full;
+		phydev->supported = phydev->advertising;
+
+		if (!(val & AQUNTIA_SPEED_LSB_MASK) ||
+		    !(val & AQUNTIA_SPEED_MSB_MASK))
+			phy_write(phydev, MDIO_MMD_PMAPMD, MII_BMCR,
+				  AQUNTIA_SPEED_LSB_MASK |
+				  AQUNTIA_SPEED_MSB_MASK);
+	} else if (phydev->interface == PHY_INTERFACE_MODE_SGMII_2500) {
+		/* 2.5GBASE-T mode */
+		phydev->advertising = SUPPORTED_1000baseT_Full;
+		phydev->supported = phydev->advertising;
+
+		phy_write(phydev, MDIO_MMD_AN, AQUNTIA_10G_CTL, 1);
+		phy_write(phydev, MDIO_MMD_AN, AQUNTIA_VENDOR_P1, 0x9440);
+	} else if (phydev->interface == PHY_INTERFACE_MODE_MII) {
+		/* 100BASE-TX mode */
+		phydev->advertising = SUPPORTED_100baseT_Full;
+		phydev->supported = phydev->advertising;
+
+		val = (val & ~AQUNTIA_SPEED_MSB_MASK) | AQUNTIA_SPEED_LSB_MASK;
+		phy_write(phydev, MDIO_MMD_PMAPMD, MII_BMCR, val);
+	}
+	return 0;
+}
+
+int aquantia_startup(struct phy_device *phydev)
+{
+	u32 reg, speed;
+	int i = 0;
+
+	phydev->duplex = DUPLEX_FULL;
+
+	/* if the AN is still in progress, wait till timeout. */
+	phy_read(phydev, MDIO_MMD_AN, MDIO_STAT1);
+	reg = phy_read(phydev, MDIO_MMD_AN, MDIO_STAT1);
+	if (!(reg & MDIO_AN_STAT1_COMPLETE)) {
+		printf("%s Waiting for PHY auto negotiation to complete",
+		       phydev->dev->name);
+		do {
+			udelay(1000);
+			reg = phy_read(phydev, MDIO_MMD_AN, MDIO_STAT1);
+			if ((i++ % 500) == 0)
+				printf(".");
+		} while (!(reg & MDIO_AN_STAT1_COMPLETE) &&
+			 i < (4 * PHY_ANEG_TIMEOUT));
+
+		if (i > PHY_ANEG_TIMEOUT)
+			printf(" TIMEOUT !\n");
+	}
+
+	/* Read twice because link state is latched and a
+	 * read moves the current state into the register */
+	phy_read(phydev, MDIO_MMD_AN, MDIO_STAT1);
+	reg = phy_read(phydev, MDIO_MMD_AN, MDIO_STAT1);
+	if (reg < 0 || !(reg & MDIO_STAT1_LSTATUS))
+		phydev->link = 0;
+	else
+		phydev->link = 1;
+
+	speed = phy_read(phydev, MDIO_MMD_PMAPMD, MII_BMCR);
+	if (speed & AQUNTIA_SPEED_MSB_MASK) {
+		if (speed & AQUNTIA_SPEED_LSB_MASK)
+			phydev->speed = SPEED_10000;
+		else
+			phydev->speed = SPEED_1000;
+	} else {
+		if (speed & AQUNTIA_SPEED_LSB_MASK)
+			phydev->speed = SPEED_100;
+		else
+			phydev->speed = SPEED_10;
+	}
+
+	return 0;
+}
+
+struct phy_driver aq1202_driver = {
+	.name = "Aquantia AQ1202",
+	.uid = 0x3a1b445,
+	.mask = 0xfffffff0,
+	.features = PHY_10G_FEATURES,
+	.mmds = (MDIO_MMD_PMAPMD | MDIO_MMD_PCS|
+			MDIO_MMD_PHYXS | MDIO_MMD_AN |
+			MDIO_MMD_VEND1),
+	.config = &aquantia_config,
+	.startup = &aquantia_startup,
+	.shutdown = &gen10g_shutdown,
+};
+
+struct phy_driver aq2104_driver = {
+	.name = "Aquantia AQ2104",
+	.uid = 0x3a1b460,
+	.mask = 0xfffffff0,
+	.features = PHY_10G_FEATURES,
+	.mmds = (MDIO_MMD_PMAPMD | MDIO_MMD_PCS|
+			MDIO_MMD_PHYXS | MDIO_MMD_AN |
+			MDIO_MMD_VEND1),
+	.config = &aquantia_config,
+	.startup = &aquantia_startup,
+	.shutdown = &gen10g_shutdown,
+};
+
+struct phy_driver aqr105_driver = {
+	.name = "Aquantia AQR105",
+	.uid = 0x3a1b4a2,
+	.mask = 0xfffffff0,
+	.features = PHY_10G_FEATURES,
+	.mmds = (MDIO_MMD_PMAPMD | MDIO_MMD_PCS|
+			MDIO_MMD_PHYXS | MDIO_MMD_AN |
+			MDIO_MMD_VEND1),
+	.config = &aquantia_config,
+	.startup = &aquantia_startup,
+	.shutdown = &gen10g_shutdown,
+};
+int phy_aquantia_init(void)
+{
+	phy_register(&aq1202_driver);
+	phy_register(&aq2104_driver);
+	phy_register(&aqr105_driver);
+
+	return 0;
+}

drivers/net/phy/phy.c

@@ -442,6 +442,9 @@ static LIST_HEAD(phy_drivers);
 
 int phy_init(void)
 {
+#ifdef CONFIG_PHY_AQUANTIA
+	phy_aquantia_init();
+#endif
 #ifdef CONFIG_PHY_ATHEROS
 	phy_atheros_init();
 #endif

include/phy.h

@@ -225,6 +225,7 @@ int gen10g_startup(struct phy_device *phydev);
 int gen10g_shutdown(struct phy_device *phydev);
 int gen10g_discover_mmds(struct phy_device *phydev);
 
+int phy_aquantia_init(void);
 int phy_atheros_init(void);
 int phy_broadcom_init(void);
 int phy_cortina_init(void);