From 36f29e6cf8071fed3854d9825217ed2a3c83b990 Mon Sep 17 00:00:00 2001
From: Russell King <rmk+kernel@arm.linux.org.uk>
Date: Wed, 16 Sep 2015 21:27:10 +0100
Subject: net: mvneta: convert to phylink

Convert mvneta to use phylink, which models the MAC to PHY link in
a generic, reusable form.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

- remove unused sync status
---
 drivers/net/ethernet/marvell/Kconfig  |   2 +-
 drivers/net/ethernet/marvell/mvneta.c | 594 ++++++++++++++++++++--------------
 2 files changed, 349 insertions(+), 247 deletions(-)

--- a/drivers/net/ethernet/marvell/Kconfig
+++ b/drivers/net/ethernet/marvell/Kconfig
@@ -60,7 +60,7 @@ config MVNETA
 	depends on ARCH_MVEBU || COMPILE_TEST
 	depends on HAS_DMA
 	select MVMDIO
-	select FIXED_PHY
+	select PHYLINK
 	---help---
 	  This driver supports the network interface units in the
 	  Marvell ARMADA XP, ARMADA 370, ARMADA 38x and
--- a/drivers/net/ethernet/marvell/mvneta.c
+++ b/drivers/net/ethernet/marvell/mvneta.c
@@ -28,7 +28,7 @@
 #include <linux/of_mdio.h>
 #include <linux/of_net.h>
 #include <linux/phy.h>
-#include <linux/phy_fixed.h>
+#include <linux/phylink.h>
 #include <linux/platform_device.h>
 #include <linux/skbuff.h>
 #include <net/hwbm.h>
@@ -189,6 +189,7 @@
 #define MVNETA_GMAC_CTRL_0                       0x2c00
 #define      MVNETA_GMAC_MAX_RX_SIZE_SHIFT       2
 #define      MVNETA_GMAC_MAX_RX_SIZE_MASK        0x7ffc
+#define      MVNETA_GMAC0_PORT_1000BASE_X        BIT(1)
 #define      MVNETA_GMAC0_PORT_ENABLE            BIT(0)
 #define MVNETA_GMAC_CTRL_2                       0x2c08
 #define      MVNETA_GMAC2_INBAND_AN_ENABLE       BIT(0)
@@ -204,13 +205,19 @@
 #define      MVNETA_GMAC_TX_FLOW_CTRL_ENABLE     BIT(5)
 #define      MVNETA_GMAC_RX_FLOW_CTRL_ACTIVE     BIT(6)
 #define      MVNETA_GMAC_TX_FLOW_CTRL_ACTIVE     BIT(7)
+#define      MVNETA_GMAC_AN_COMPLETE             BIT(11)
+#define      MVNETA_GMAC_SYNC_OK                 BIT(14)
 #define MVNETA_GMAC_AUTONEG_CONFIG               0x2c0c
 #define      MVNETA_GMAC_FORCE_LINK_DOWN         BIT(0)
 #define      MVNETA_GMAC_FORCE_LINK_PASS         BIT(1)
 #define      MVNETA_GMAC_INBAND_AN_ENABLE        BIT(2)
+#define      MVNETA_GMAC_AN_BYPASS_ENABLE        BIT(3)
+#define      MVNETA_GMAC_INBAND_RESTART_AN       BIT(4)
 #define      MVNETA_GMAC_CONFIG_MII_SPEED        BIT(5)
 #define      MVNETA_GMAC_CONFIG_GMII_SPEED       BIT(6)
 #define      MVNETA_GMAC_AN_SPEED_EN             BIT(7)
+#define      MVNETA_GMAC_CONFIG_FLOW_CTRL        BIT(8)
+#define      MVNETA_GMAC_ADVERT_SYM_FLOW_CTRL    BIT(9)
 #define      MVNETA_GMAC_AN_FLOW_CTRL_EN         BIT(11)
 #define      MVNETA_GMAC_CONFIG_FULL_DUPLEX      BIT(12)
 #define      MVNETA_GMAC_AN_DUPLEX_EN            BIT(13)
@@ -237,6 +244,12 @@
 #define MVNETA_TXQ_TOKEN_SIZE_REG(q)             (0x3e40 + ((q) << 2))
 #define      MVNETA_TXQ_TOKEN_SIZE_MAX           0x7fffffff
 
+#define MVNETA_LPI_CTRL_0                        0x2cc0
+#define MVNETA_LPI_CTRL_1                        0x2cc4
+#define      MVNETA_LPI_REQUEST_ENABLE           BIT(0)
+#define MVNETA_LPI_CTRL_2                        0x2cc8
+#define MVNETA_LPI_STATUS                        0x2ccc
+
 #define MVNETA_CAUSE_TXQ_SENT_DESC_ALL_MASK	 0xff
 
 /* Descriptor ring Macros */
@@ -313,6 +326,11 @@
 #define MVNETA_RX_GET_BM_POOL_ID(rxd) \
 	(((rxd)->status & MVNETA_RXD_BM_POOL_MASK) >> MVNETA_RXD_BM_POOL_SHIFT)
 
+enum {
+	ETHTOOL_STAT_EEE_WAKEUP,
+	ETHTOOL_MAX_STATS,
+};
+
 struct mvneta_statistic {
 	unsigned short offset;
 	unsigned short type;
@@ -321,6 +339,7 @@ struct mvneta_statistic {
 
 #define T_REG_32	32
 #define T_REG_64	64
+#define T_SW		1
 
 static const struct mvneta_statistic mvneta_statistics[] = {
 	{ 0x3000, T_REG_64, "good_octets_received", },
@@ -355,6 +374,7 @@ static const struct mvneta_statistic mvn
 	{ 0x304c, T_REG_32, "broadcast_frames_sent", },
 	{ 0x3054, T_REG_32, "fc_sent", },
 	{ 0x300c, T_REG_32, "internal_mac_transmit_err", },
+	{ ETHTOOL_STAT_EEE_WAKEUP, T_SW, "eee_wakeup_errors", },
 };
 
 struct mvneta_pcpu_stats {
@@ -407,20 +427,19 @@ struct mvneta_port {
 	u16 tx_ring_size;
 	u16 rx_ring_size;
 
-	struct mii_bus *mii_bus;
-	phy_interface_t phy_interface;
-	struct device_node *phy_node;
-	unsigned int link;
-	unsigned int duplex;
-	unsigned int speed;
+	struct device_node *dn;
 	unsigned int tx_csum_limit;
-	unsigned int use_inband_status:1;
+	struct phylink *phylink;
 
 	struct mvneta_bm *bm_priv;
 	struct mvneta_bm_pool *pool_long;
 	struct mvneta_bm_pool *pool_short;
 	int bm_win_id;
 
+	bool eee_enabled;
+	bool eee_active;
+	bool tx_lpi_enabled;
+
 	u64 ethtool_stats[ARRAY_SIZE(mvneta_statistics)];
 
 	u32 indir[MVNETA_RSS_LU_TABLE_SIZE];
@@ -1215,10 +1234,6 @@ static void mvneta_port_disable(struct m
 	val &= ~MVNETA_GMAC0_PORT_ENABLE;
 	mvreg_write(pp, MVNETA_GMAC_CTRL_0, val);
 
-	pp->link = 0;
-	pp->duplex = -1;
-	pp->speed = 0;
-
 	udelay(200);
 }
 
@@ -1278,44 +1293,6 @@ static void mvneta_set_other_mcast_table
 		mvreg_write(pp, MVNETA_DA_FILT_OTH_MCAST + offset, val);
 }
 
-static void mvneta_set_autoneg(struct mvneta_port *pp, int enable)
-{
-	u32 val;
-
-	if (enable) {
-		val = mvreg_read(pp, MVNETA_GMAC_AUTONEG_CONFIG);
-		val &= ~(MVNETA_GMAC_FORCE_LINK_PASS |
-			 MVNETA_GMAC_FORCE_LINK_DOWN |
-			 MVNETA_GMAC_AN_FLOW_CTRL_EN);
-		val |= MVNETA_GMAC_INBAND_AN_ENABLE |
-		       MVNETA_GMAC_AN_SPEED_EN |
-		       MVNETA_GMAC_AN_DUPLEX_EN;
-		mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG, val);
-
-		val = mvreg_read(pp, MVNETA_GMAC_CLOCK_DIVIDER);
-		val |= MVNETA_GMAC_1MS_CLOCK_ENABLE;
-		mvreg_write(pp, MVNETA_GMAC_CLOCK_DIVIDER, val);
-
-		val = mvreg_read(pp, MVNETA_GMAC_CTRL_2);
-		val |= MVNETA_GMAC2_INBAND_AN_ENABLE;
-		mvreg_write(pp, MVNETA_GMAC_CTRL_2, val);
-	} else {
-		val = mvreg_read(pp, MVNETA_GMAC_AUTONEG_CONFIG);
-		val &= ~(MVNETA_GMAC_INBAND_AN_ENABLE |
-		       MVNETA_GMAC_AN_SPEED_EN |
-		       MVNETA_GMAC_AN_DUPLEX_EN);
-		mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG, val);
-
-		val = mvreg_read(pp, MVNETA_GMAC_CLOCK_DIVIDER);
-		val &= ~MVNETA_GMAC_1MS_CLOCK_ENABLE;
-		mvreg_write(pp, MVNETA_GMAC_CLOCK_DIVIDER, val);
-
-		val = mvreg_read(pp, MVNETA_GMAC_CTRL_2);
-		val &= ~MVNETA_GMAC2_INBAND_AN_ENABLE;
-		mvreg_write(pp, MVNETA_GMAC_CTRL_2, val);
-	}
-}
-
 static void mvneta_percpu_unmask_interrupt(void *arg)
 {
 	struct mvneta_port *pp = arg;
@@ -1468,7 +1445,6 @@ static void mvneta_defaults_set(struct m
 	val &= ~MVNETA_PHY_POLLING_ENABLE;
 	mvreg_write(pp, MVNETA_UNIT_CONTROL, val);
 
-	mvneta_set_autoneg(pp, pp->use_inband_status);
 	mvneta_set_ucast_table(pp, -1);
 	mvneta_set_special_mcast_table(pp, -1);
 	mvneta_set_other_mcast_table(pp, -1);
@@ -2693,26 +2669,11 @@ static irqreturn_t mvneta_percpu_isr(int
 	return IRQ_HANDLED;
 }
 
-static int mvneta_fixed_link_update(struct mvneta_port *pp,
-				    struct phy_device *phy)
+static void mvneta_link_change(struct mvneta_port *pp)
 {
-	struct fixed_phy_status status;
-	struct fixed_phy_status changed = {};
 	u32 gmac_stat = mvreg_read(pp, MVNETA_GMAC_STATUS);
 
-	status.link = !!(gmac_stat & MVNETA_GMAC_LINK_UP);
-	if (gmac_stat & MVNETA_GMAC_SPEED_1000)
-		status.speed = SPEED_1000;
-	else if (gmac_stat & MVNETA_GMAC_SPEED_100)
-		status.speed = SPEED_100;
-	else
-		status.speed = SPEED_10;
-	status.duplex = !!(gmac_stat & MVNETA_GMAC_FULL_DUPLEX);
-	changed.link = 1;
-	changed.speed = 1;
-	changed.duplex = 1;
-	fixed_phy_update_state(phy, &status, &changed);
-	return 0;
+	phylink_mac_change(pp->phylink, !!(gmac_stat & MVNETA_GMAC_LINK_UP));
 }
 
 /* NAPI handler
@@ -2728,7 +2689,6 @@ static int mvneta_poll(struct napi_struc
 	u32 cause_rx_tx;
 	int rx_queue;
 	struct mvneta_port *pp = netdev_priv(napi->dev);
-	struct net_device *ndev = pp->dev;
 	struct mvneta_pcpu_port *port = this_cpu_ptr(pp->ports);
 
 	if (!netif_running(pp->dev)) {
@@ -2742,12 +2702,11 @@ static int mvneta_poll(struct napi_struc
 		u32 cause_misc = mvreg_read(pp, MVNETA_INTR_MISC_CAUSE);
 
 		mvreg_write(pp, MVNETA_INTR_MISC_CAUSE, 0);
-		if (pp->use_inband_status && (cause_misc &
-				(MVNETA_CAUSE_PHY_STATUS_CHANGE |
-				 MVNETA_CAUSE_LINK_CHANGE |
-				 MVNETA_CAUSE_PSC_SYNC_CHANGE))) {
-			mvneta_fixed_link_update(pp, ndev->phydev);
-		}
+
+		if (cause_misc & (MVNETA_CAUSE_PHY_STATUS_CHANGE |
+				  MVNETA_CAUSE_LINK_CHANGE |
+				  MVNETA_CAUSE_PSC_SYNC_CHANGE))
+			mvneta_link_change(pp);
 	}
 
 	/* Release Tx descriptors */
@@ -3060,7 +3019,6 @@ static int mvneta_setup_txqs(struct mvne
 static void mvneta_start_dev(struct mvneta_port *pp)
 {
 	int cpu;
-	struct net_device *ndev = pp->dev;
 
 	mvneta_max_rx_size_set(pp, pp->pkt_size);
 	mvneta_txq_max_tx_size_set(pp, pp->pkt_size);
@@ -3088,16 +3046,15 @@ static void mvneta_start_dev(struct mvne
 		    MVNETA_CAUSE_LINK_CHANGE |
 		    MVNETA_CAUSE_PSC_SYNC_CHANGE);
 
-	phy_start(ndev->phydev);
+	phylink_start(pp->phylink);
 	netif_tx_start_all_queues(pp->dev);
 }
 
 static void mvneta_stop_dev(struct mvneta_port *pp)
 {
 	unsigned int cpu;
-	struct net_device *ndev = pp->dev;
 
-	phy_stop(ndev->phydev);
+	phylink_stop(pp->phylink);
 
 	if (!pp->neta_armada3700) {
 		for_each_online_cpu(cpu) {
@@ -3250,103 +3207,232 @@ static int mvneta_set_mac_addr(struct ne
 	return 0;
 }
 
-static void mvneta_adjust_link(struct net_device *ndev)
+static void mvneta_validate(struct net_device *ndev, unsigned long *supported,
+			    struct phylink_link_state *state)
+{
+	__ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };
+
+	/* Allow all the expected bits */
+	phylink_set(mask, Autoneg);
+	phylink_set_port_modes(mask);
+
+	/* Asymmetric pause is unsupported */
+	phylink_set(mask, Pause);
+	/* Half-duplex at speeds higher than 100Mbit is unsupported */
+	phylink_set(mask, 1000baseT_Full);
+	phylink_set(mask, 1000baseX_Full);
+
+	if (state->interface != PHY_INTERFACE_MODE_1000BASEX) {
+		/* 10M and 100M are only supported in non-802.3z mode */
+		phylink_set(mask, 10baseT_Half);
+		phylink_set(mask, 10baseT_Full);
+		phylink_set(mask, 100baseT_Half);
+		phylink_set(mask, 100baseT_Full);
+	}
+
+	bitmap_and(supported, supported, mask,
+		   __ETHTOOL_LINK_MODE_MASK_NBITS);
+	bitmap_and(state->advertising, state->advertising, mask,
+		   __ETHTOOL_LINK_MODE_MASK_NBITS);
+}
+
+static int mvneta_mac_link_state(struct net_device *ndev,
+				 struct phylink_link_state *state)
 {
 	struct mvneta_port *pp = netdev_priv(ndev);
-	struct phy_device *phydev = ndev->phydev;
-	int status_change = 0;
+	u32 gmac_stat;
 
-	if (phydev->link) {
-		if ((pp->speed != phydev->speed) ||
-		    (pp->duplex != phydev->duplex)) {
-			u32 val;
-
-			val = mvreg_read(pp, MVNETA_GMAC_AUTONEG_CONFIG);
-			val &= ~(MVNETA_GMAC_CONFIG_MII_SPEED |
-				 MVNETA_GMAC_CONFIG_GMII_SPEED |
-				 MVNETA_GMAC_CONFIG_FULL_DUPLEX);
-
-			if (phydev->duplex)
-				val |= MVNETA_GMAC_CONFIG_FULL_DUPLEX;
-
-			if (phydev->speed == SPEED_1000)
-				val |= MVNETA_GMAC_CONFIG_GMII_SPEED;
-			else if (phydev->speed == SPEED_100)
-				val |= MVNETA_GMAC_CONFIG_MII_SPEED;
+	gmac_stat = mvreg_read(pp, MVNETA_GMAC_STATUS);
 
-			mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG, val);
+	if (gmac_stat & MVNETA_GMAC_SPEED_1000)
+		state->speed = SPEED_1000;
+	else if (gmac_stat & MVNETA_GMAC_SPEED_100)
+		state->speed = SPEED_100;
+	else
+		state->speed = SPEED_10;
 
-			pp->duplex = phydev->duplex;
-			pp->speed  = phydev->speed;
-		}
+	state->an_complete = !!(gmac_stat & MVNETA_GMAC_AN_COMPLETE);
+	state->link = !!(gmac_stat & MVNETA_GMAC_LINK_UP);
+	state->duplex = !!(gmac_stat & MVNETA_GMAC_FULL_DUPLEX);
+
+	state->pause = 0;
+	if (gmac_stat & MVNETA_GMAC_RX_FLOW_CTRL_ENABLE)
+		state->pause |= MLO_PAUSE_RX;
+	if (gmac_stat & MVNETA_GMAC_TX_FLOW_CTRL_ENABLE)
+		state->pause |= MLO_PAUSE_TX;
+
+	return 1;
+}
+
+static void mvneta_mac_an_restart(struct net_device *ndev)
+{
+	struct mvneta_port *pp = netdev_priv(ndev);
+	u32 gmac_an = mvreg_read(pp, MVNETA_GMAC_AUTONEG_CONFIG);
+
+	mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG,
+		    gmac_an | MVNETA_GMAC_INBAND_RESTART_AN);
+	mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG,
+		    gmac_an & ~MVNETA_GMAC_INBAND_RESTART_AN);
+}
+
+static void mvneta_mac_config(struct net_device *ndev, unsigned int mode,
+	const struct phylink_link_state *state)
+{
+	struct mvneta_port *pp = netdev_priv(ndev);
+	u32 new_ctrl0, gmac_ctrl0 = mvreg_read(pp, MVNETA_GMAC_CTRL_0);
+	u32 new_ctrl2, gmac_ctrl2 = mvreg_read(pp, MVNETA_GMAC_CTRL_2);
+	u32 new_clk, gmac_clk = mvreg_read(pp, MVNETA_GMAC_CLOCK_DIVIDER);
+	u32 new_an, gmac_an = mvreg_read(pp, MVNETA_GMAC_AUTONEG_CONFIG);
+
+	new_ctrl0 = gmac_ctrl0 & ~MVNETA_GMAC0_PORT_1000BASE_X;
+	new_ctrl2 = gmac_ctrl2 & ~MVNETA_GMAC2_INBAND_AN_ENABLE;
+	new_clk = gmac_clk & ~MVNETA_GMAC_1MS_CLOCK_ENABLE;
+	new_an = gmac_an & ~(MVNETA_GMAC_INBAND_AN_ENABLE |
+			     MVNETA_GMAC_INBAND_RESTART_AN |
+			     MVNETA_GMAC_CONFIG_MII_SPEED |
+			     MVNETA_GMAC_CONFIG_GMII_SPEED |
+			     MVNETA_GMAC_AN_SPEED_EN |
+			     MVNETA_GMAC_ADVERT_SYM_FLOW_CTRL |
+			     MVNETA_GMAC_CONFIG_FLOW_CTRL |
+			     MVNETA_GMAC_AN_FLOW_CTRL_EN |
+			     MVNETA_GMAC_CONFIG_FULL_DUPLEX |
+			     MVNETA_GMAC_AN_DUPLEX_EN);
+
+	if (phylink_test(state->advertising, Pause))
+		new_an |= MVNETA_GMAC_ADVERT_SYM_FLOW_CTRL;
+	if (state->pause & MLO_PAUSE_TXRX_MASK)
+		new_an |= MVNETA_GMAC_CONFIG_FLOW_CTRL;
+
+	if (!phylink_autoneg_inband(mode)) {
+		/* Phy or fixed speed */
+		if (state->duplex)
+			new_an |= MVNETA_GMAC_CONFIG_FULL_DUPLEX;
+
+		if (state->speed == SPEED_1000)
+			new_an |= MVNETA_GMAC_CONFIG_GMII_SPEED;
+		else if (state->speed == SPEED_100)
+			new_an |= MVNETA_GMAC_CONFIG_MII_SPEED;
+	} else if (state->interface == PHY_INTERFACE_MODE_SGMII) {
+		/* SGMII mode receives the state from the PHY */
+		new_ctrl2 |= MVNETA_GMAC2_INBAND_AN_ENABLE;
+		new_clk |= MVNETA_GMAC_1MS_CLOCK_ENABLE;
+		new_an = (new_an & ~(MVNETA_GMAC_FORCE_LINK_DOWN |
+				     MVNETA_GMAC_FORCE_LINK_PASS)) |
+			 MVNETA_GMAC_INBAND_AN_ENABLE |
+			 MVNETA_GMAC_AN_SPEED_EN |
+			 MVNETA_GMAC_AN_DUPLEX_EN;
+	} else {
+		/* 802.3z negotiation - only 1000base-X */
+		new_ctrl0 |= MVNETA_GMAC0_PORT_1000BASE_X;
+		new_clk |= MVNETA_GMAC_1MS_CLOCK_ENABLE;
+		new_an = (new_an & ~(MVNETA_GMAC_FORCE_LINK_DOWN |
+				     MVNETA_GMAC_FORCE_LINK_PASS)) |
+			 MVNETA_GMAC_INBAND_AN_ENABLE |
+			 MVNETA_GMAC_CONFIG_GMII_SPEED |
+			 /* The MAC only supports FD mode */
+			 MVNETA_GMAC_CONFIG_FULL_DUPLEX;
+
+		if (state->pause & MLO_PAUSE_AN && state->an_enabled)
+			new_an |= MVNETA_GMAC_AN_FLOW_CTRL_EN;
+	}
+
+	/* Armada 370 documentation says we can only change the port mode
+	 * and in-band enable when the link is down, so force it down
+	 * while making these changes. We also do this for GMAC_CTRL2 */
+	if ((new_ctrl0 ^ gmac_ctrl0) & MVNETA_GMAC0_PORT_1000BASE_X ||
+	    (new_ctrl2 ^ gmac_ctrl2) & MVNETA_GMAC2_INBAND_AN_ENABLE ||
+	    (new_an  ^ gmac_an) & MVNETA_GMAC_INBAND_AN_ENABLE) {
+		mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG,
+			    (gmac_an & ~MVNETA_GMAC_FORCE_LINK_PASS) |
+			    MVNETA_GMAC_FORCE_LINK_DOWN);
+	}
+
+	if (new_ctrl0 != gmac_ctrl0)
+		mvreg_write(pp, MVNETA_GMAC_CTRL_0, new_ctrl0);
+	if (new_ctrl2 != gmac_ctrl2)
+		mvreg_write(pp, MVNETA_GMAC_CTRL_2, new_ctrl2);
+	if (new_clk != gmac_clk)
+		mvreg_write(pp, MVNETA_GMAC_CLOCK_DIVIDER, new_clk);
+	if (new_an != gmac_an)
+		mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG, new_an);
+}
+
+static void mvneta_set_eee(struct mvneta_port *pp, bool enable)
+{
+	u32 lpi_ctl1;
+
+	lpi_ctl1 = mvreg_read(pp, MVNETA_LPI_CTRL_1);
+	if (enable)
+		lpi_ctl1 |= MVNETA_LPI_REQUEST_ENABLE;
+	else
+		lpi_ctl1 &= ~MVNETA_LPI_REQUEST_ENABLE;
+	mvreg_write(pp, MVNETA_LPI_CTRL_1, lpi_ctl1);
+}
+
+static void mvneta_mac_link_down(struct net_device *ndev, unsigned int mode)
+{
+	struct mvneta_port *pp = netdev_priv(ndev);
+	u32 val;
+
+	mvneta_port_down(pp);
+
+	if (!phylink_autoneg_inband(mode)) {
+		val = mvreg_read(pp, MVNETA_GMAC_AUTONEG_CONFIG);
+		val &= ~MVNETA_GMAC_FORCE_LINK_PASS;
+		val |= MVNETA_GMAC_FORCE_LINK_DOWN;
+		mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG, val);
 	}
 
-	if (phydev->link != pp->link) {
-		if (!phydev->link) {
-			pp->duplex = -1;
-			pp->speed = 0;
-		}
+	pp->eee_active = false;
+	mvneta_set_eee(pp, false);
+}
+
+static void mvneta_mac_link_up(struct net_device *ndev, unsigned int mode,
+			       struct phy_device *phy)
+{
+	struct mvneta_port *pp = netdev_priv(ndev);
+	u32 val;
 
-		pp->link = phydev->link;
-		status_change = 1;
+	if (!phylink_autoneg_inband(mode)) {
+		val = mvreg_read(pp, MVNETA_GMAC_AUTONEG_CONFIG);
+		val &= ~MVNETA_GMAC_FORCE_LINK_DOWN;
+		val |= MVNETA_GMAC_FORCE_LINK_PASS;
+		mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG, val);
 	}
 
-	if (status_change) {
-		if (phydev->link) {
-			if (!pp->use_inband_status) {
-				u32 val = mvreg_read(pp,
-						  MVNETA_GMAC_AUTONEG_CONFIG);
-				val &= ~MVNETA_GMAC_FORCE_LINK_DOWN;
-				val |= MVNETA_GMAC_FORCE_LINK_PASS;
-				mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG,
-					    val);
-			}
-			mvneta_port_up(pp);
-		} else {
-			if (!pp->use_inband_status) {
-				u32 val = mvreg_read(pp,
-						  MVNETA_GMAC_AUTONEG_CONFIG);
-				val &= ~MVNETA_GMAC_FORCE_LINK_PASS;
-				val |= MVNETA_GMAC_FORCE_LINK_DOWN;
-				mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG,
-					    val);
-			}
-			mvneta_port_down(pp);
-		}
-		phy_print_status(phydev);
+	mvneta_port_up(pp);
+
+	if (phy && pp->eee_enabled) {
+		pp->eee_active = phy_init_eee(phy, 0) >= 0;
+		mvneta_set_eee(pp, pp->eee_active && pp->tx_lpi_enabled);
 	}
 }
 
+static const struct phylink_mac_ops mvneta_phylink_ops = {
+	.validate = mvneta_validate,
+	.mac_link_state = mvneta_mac_link_state,
+	.mac_an_restart = mvneta_mac_an_restart,
+	.mac_config = mvneta_mac_config,
+	.mac_link_down = mvneta_mac_link_down,
+	.mac_link_up = mvneta_mac_link_up,
+};
+
 static int mvneta_mdio_probe(struct mvneta_port *pp)
 {
-	struct phy_device *phy_dev;
 	struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL };
+	int err = phylink_of_phy_connect(pp->phylink, pp->dn);
+	if (err)
+		netdev_err(pp->dev, "could not attach PHY\n");
 
-	phy_dev = of_phy_connect(pp->dev, pp->phy_node, mvneta_adjust_link, 0,
-				 pp->phy_interface);
-	if (!phy_dev) {
-		netdev_err(pp->dev, "could not find the PHY\n");
-		return -ENODEV;
-	}
-
-	phy_ethtool_get_wol(phy_dev, &wol);
+	phylink_ethtool_get_wol(pp->phylink, &wol);
 	device_set_wakeup_capable(&pp->dev->dev, !!wol.supported);
 
-	phy_dev->supported &= PHY_GBIT_FEATURES;
-	phy_dev->advertising = phy_dev->supported;
-
-	pp->link    = 0;
-	pp->duplex  = 0;
-	pp->speed   = 0;
-
-	return 0;
+	return err;
 }
 
 static void mvneta_mdio_remove(struct mvneta_port *pp)
 {
-	struct net_device *ndev = pp->dev;
-
-	phy_disconnect(ndev->phydev);
+	phylink_disconnect_phy(pp->phylink);
 }
 
 /* Electing a CPU must be done in an atomic way: it should be done
@@ -3625,10 +3711,9 @@ static int mvneta_stop(struct net_device
 
 static int mvneta_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 {
-	if (!dev->phydev)
-		return -ENOTSUPP;
+	struct mvneta_port *pp = netdev_priv(dev);
 
-	return phy_mii_ioctl(dev->phydev, ifr, cmd);
+	return phylink_mii_ioctl(pp->phylink, ifr, cmd);
 }
 
 /* Ethtool methods */
@@ -3639,44 +3724,25 @@ mvneta_ethtool_set_link_ksettings(struct
 				  const struct ethtool_link_ksettings *cmd)
 {
 	struct mvneta_port *pp = netdev_priv(ndev);
-	struct phy_device *phydev = ndev->phydev;
 
-	if (!phydev)
-		return -ENODEV;
-
-	if ((cmd->base.autoneg == AUTONEG_ENABLE) != pp->use_inband_status) {
-		u32 val;
-
-		mvneta_set_autoneg(pp, cmd->base.autoneg == AUTONEG_ENABLE);
-
-		if (cmd->base.autoneg == AUTONEG_DISABLE) {
-			val = mvreg_read(pp, MVNETA_GMAC_AUTONEG_CONFIG);
-			val &= ~(MVNETA_GMAC_CONFIG_MII_SPEED |
-				 MVNETA_GMAC_CONFIG_GMII_SPEED |
-				 MVNETA_GMAC_CONFIG_FULL_DUPLEX);
-
-			if (phydev->duplex)
-				val |= MVNETA_GMAC_CONFIG_FULL_DUPLEX;
+	return phylink_ethtool_ksettings_set(pp->phylink, cmd);
+}
 
-			if (phydev->speed == SPEED_1000)
-				val |= MVNETA_GMAC_CONFIG_GMII_SPEED;
-			else if (phydev->speed == SPEED_100)
-				val |= MVNETA_GMAC_CONFIG_MII_SPEED;
+/* Get link ksettings for ethtools */
+static int
+mvneta_ethtool_get_link_ksettings(struct net_device *ndev,
+				  struct ethtool_link_ksettings *cmd)
+{
+	struct mvneta_port *pp = netdev_priv(ndev);
 
-			mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG, val);
-		}
+	return phylink_ethtool_ksettings_get(pp->phylink, cmd);
+}
 
-		pp->use_inband_status = (cmd->base.autoneg == AUTONEG_ENABLE);
-		netdev_info(pp->dev, "autoneg status set to %i\n",
-			    pp->use_inband_status);
-
-		if (netif_running(ndev)) {
-			mvneta_port_down(pp);
-			mvneta_port_up(pp);
-		}
-	}
+static int mvneta_ethtool_nway_reset(struct net_device *dev)
+{
+	struct mvneta_port *pp = netdev_priv(dev);
 
-	return phy_ethtool_ksettings_set(ndev->phydev, cmd);
+	return phylink_ethtool_nway_reset(pp->phylink);
 }
 
 /* Set interrupt coalescing for ethtools */
@@ -3768,6 +3834,22 @@ static int mvneta_ethtool_set_ringparam(
 	return 0;
 }
 
+static void mvneta_ethtool_get_pauseparam(struct net_device *dev,
+					  struct ethtool_pauseparam *pause)
+{
+	struct mvneta_port *pp = netdev_priv(dev);
+
+	phylink_ethtool_get_pauseparam(pp->phylink, pause);
+}
+
+static int mvneta_ethtool_set_pauseparam(struct net_device *dev,
+					 struct ethtool_pauseparam *pause)
+{
+	struct mvneta_port *pp = netdev_priv(dev);
+
+	return phylink_ethtool_set_pauseparam(pp->phylink, pause);
+}
+
 static void mvneta_ethtool_get_strings(struct net_device *netdev, u32 sset,
 				       u8 *data)
 {
@@ -3784,26 +3866,35 @@ static void mvneta_ethtool_update_stats(
 {
 	const struct mvneta_statistic *s;
 	void __iomem *base = pp->base;
-	u32 high, low, val;
-	u64 val64;
+	u32 high, low;
+	u64 val;
 	int i;
 
 	for (i = 0, s = mvneta_statistics;
 	     s < mvneta_statistics + ARRAY_SIZE(mvneta_statistics);
 	     s++, i++) {
+		val = 0;
+
 		switch (s->type) {
 		case T_REG_32:
 			val = readl_relaxed(base + s->offset);
-			pp->ethtool_stats[i] += val;
 			break;
 		case T_REG_64:
 			/* Docs say to read low 32-bit then high */
 			low = readl_relaxed(base + s->offset);
 			high = readl_relaxed(base + s->offset + 4);
-			val64 = (u64)high << 32 | low;
-			pp->ethtool_stats[i] += val64;
+			val = (u64)high << 32 | low;
+			break;
+		case T_SW:
+			switch (s->offset) {
+			case ETHTOOL_STAT_EEE_WAKEUP:
+				val = phylink_get_eee_err(pp->phylink);
+				break;
+			}
 			break;
 		}
+
+		pp->ethtool_stats[i] += val;
 	}
 }
 
@@ -3938,28 +4029,65 @@ static int mvneta_ethtool_get_rxfh(struc
 static void mvneta_ethtool_get_wol(struct net_device *dev,
 				   struct ethtool_wolinfo *wol)
 {
-	wol->supported = 0;
-	wol->wolopts = 0;
+	struct mvneta_port *pp = netdev_priv(dev);
 
-	if (dev->phydev)
-		phy_ethtool_get_wol(dev->phydev, wol);
+	phylink_ethtool_get_wol(pp->phylink, wol);
 }
 
 static int mvneta_ethtool_set_wol(struct net_device *dev,
 				  struct ethtool_wolinfo *wol)
 {
+	struct mvneta_port *pp = netdev_priv(dev);
 	int ret;
 
-	if (!dev->phydev)
-		return -EOPNOTSUPP;
-
-	ret = phy_ethtool_set_wol(dev->phydev, wol);
+	ret = phylink_ethtool_set_wol(pp->phylink, wol);
 	if (!ret)
 		device_set_wakeup_enable(&dev->dev, !!wol->wolopts);
 
 	return ret;
 }
 
+static int mvneta_ethtool_get_eee(struct net_device *dev,
+				  struct ethtool_eee *eee)
+{
+	struct mvneta_port *pp = netdev_priv(dev);
+	u32 lpi_ctl0;
+
+	lpi_ctl0 = mvreg_read(pp, MVNETA_LPI_CTRL_0);
+
+	eee->eee_enabled = pp->eee_enabled;
+	eee->eee_active = pp->eee_active;
+	eee->tx_lpi_enabled = pp->tx_lpi_enabled;
+	eee->tx_lpi_timer = (lpi_ctl0) >> 8; // * scale;
+
+	return phylink_ethtool_get_eee(pp->phylink, eee);
+}
+
+static int mvneta_ethtool_set_eee(struct net_device *dev,
+				  struct ethtool_eee *eee)
+{
+	struct mvneta_port *pp = netdev_priv(dev);
+	u32 lpi_ctl0;
+
+	/* The Armada 37x documents do not give limits for this other than
+	 * it being an 8-bit register. */
+	if (eee->tx_lpi_enabled &&
+	    (eee->tx_lpi_timer < 0 || eee->tx_lpi_timer > 255))
+		return -EINVAL;
+
+	lpi_ctl0 = mvreg_read(pp, MVNETA_LPI_CTRL_0);
+	lpi_ctl0 &= ~(0xff << 8);
+	lpi_ctl0 |= eee->tx_lpi_timer << 8;
+	mvreg_write(pp, MVNETA_LPI_CTRL_0, lpi_ctl0);
+
+	pp->eee_enabled = eee->eee_enabled;
+	pp->tx_lpi_enabled = eee->tx_lpi_enabled;
+
+	mvneta_set_eee(pp, eee->tx_lpi_enabled && eee->eee_enabled);
+
+	return phylink_ethtool_set_eee(pp->phylink, eee);
+}
+
 static u16 mvneta_select_queue(struct net_device *dev, struct sk_buff *skb,
 			       void *accel_priv,
 			       select_queue_fallback_t fallback)
@@ -3983,13 +4111,15 @@ static const struct net_device_ops mvnet
 };
 
 static const struct ethtool_ops mvneta_eth_tool_ops = {
-	.nway_reset	= phy_ethtool_nway_reset,
+	.nway_reset	= mvneta_ethtool_nway_reset,
 	.get_link       = ethtool_op_get_link,
 	.set_coalesce   = mvneta_ethtool_set_coalesce,
 	.get_coalesce   = mvneta_ethtool_get_coalesce,
 	.get_drvinfo    = mvneta_ethtool_get_drvinfo,
 	.get_ringparam  = mvneta_ethtool_get_ringparam,
 	.set_ringparam	= mvneta_ethtool_set_ringparam,
+	.get_pauseparam	= mvneta_ethtool_get_pauseparam,
+	.set_pauseparam	= mvneta_ethtool_set_pauseparam,
 	.get_strings	= mvneta_ethtool_get_strings,
 	.get_ethtool_stats = mvneta_ethtool_get_stats,
 	.get_sset_count	= mvneta_ethtool_get_sset_count,
@@ -3997,10 +4127,12 @@ static const struct ethtool_ops mvneta_e
 	.get_rxnfc	= mvneta_ethtool_get_rxnfc,
 	.get_rxfh	= mvneta_ethtool_get_rxfh,
 	.set_rxfh	= mvneta_ethtool_set_rxfh,
-	.get_link_ksettings = phy_ethtool_get_link_ksettings,
+	.get_link_ksettings = mvneta_ethtool_get_link_ksettings,
 	.set_link_ksettings = mvneta_ethtool_set_link_ksettings,
 	.get_wol        = mvneta_ethtool_get_wol,
 	.set_wol        = mvneta_ethtool_set_wol,
+	.get_eee	= mvneta_ethtool_get_eee,
+	.set_eee	= mvneta_ethtool_set_eee,
 };
 
 /* Initialize hw */
@@ -4145,14 +4277,13 @@ static int mvneta_probe(struct platform_
 {
 	struct resource *res;
 	struct device_node *dn = pdev->dev.of_node;
-	struct device_node *phy_node;
 	struct device_node *bm_node;
 	struct mvneta_port *pp;
 	struct net_device *dev;
+	struct phylink *phylink;
 	const char *dt_mac_addr;
 	char hw_mac_addr[ETH_ALEN];
 	const char *mac_from;
-	const char *managed;
 	int tx_csum_limit;
 	int phy_mode;
 	int err;
@@ -4168,31 +4299,11 @@ static int mvneta_probe(struct platform_
 		goto err_free_netdev;
 	}
 
-	phy_node = of_parse_phandle(dn, "phy", 0);
-	if (!phy_node) {
-		if (!of_phy_is_fixed_link(dn)) {
-			dev_err(&pdev->dev, "no PHY specified\n");
-			err = -ENODEV;
-			goto err_free_irq;
-		}
-
-		err = of_phy_register_fixed_link(dn);
-		if (err < 0) {
-			dev_err(&pdev->dev, "cannot register fixed PHY\n");
-			goto err_free_irq;
-		}
-
-		/* In the case of a fixed PHY, the DT node associated
-		 * to the PHY is the Ethernet MAC DT node.
-		 */
-		phy_node = of_node_get(dn);
-	}
-
 	phy_mode = of_get_phy_mode(dn);
 	if (phy_mode < 0) {
 		dev_err(&pdev->dev, "incorrect phy-mode\n");
 		err = -EINVAL;
-		goto err_put_phy_node;
+		goto err_free_irq;
 	}
 
 	dev->tx_queue_len = MVNETA_MAX_TXD;
@@ -4203,12 +4314,7 @@ static int mvneta_probe(struct platform_
 
 	pp = netdev_priv(dev);
 	spin_lock_init(&pp->lock);
-	pp->phy_node = phy_node;
-	pp->phy_interface = phy_mode;
-
-	err = of_property_read_string(dn, "managed", &managed);
-	pp->use_inband_status = (err == 0 &&
-				 strcmp(managed, "in-band-status") == 0);
+	pp->dn = dn;
 
 	pp->rxq_def = rxq_def;
 
@@ -4230,7 +4336,7 @@ static int mvneta_probe(struct platform_
 		pp->clk = devm_clk_get(&pdev->dev, NULL);
 	if (IS_ERR(pp->clk)) {
 		err = PTR_ERR(pp->clk);
-		goto err_put_phy_node;
+		goto err_free_irq;
 	}
 
 	clk_prepare_enable(pp->clk);
@@ -4356,6 +4462,14 @@ static int mvneta_probe(struct platform_
 	/* 9676 == 9700 - 20 and rounding to 8 */
 	dev->max_mtu = 9676;
 
+	phylink = phylink_create(dev, dn, phy_mode, &mvneta_phylink_ops);
+	if (IS_ERR(phylink)) {
+		err = PTR_ERR(phylink);
+		goto err_netdev;
+	}
+
+	pp->phylink = phylink;
+
 	err = register_netdev(dev);
 	if (err < 0) {
 		dev_err(&pdev->dev, "failed to register\n");
@@ -4367,14 +4481,6 @@ static int mvneta_probe(struct platform_
 
 	platform_set_drvdata(pdev, pp->dev);
 
-	if (pp->use_inband_status) {
-		struct phy_device *phy = of_phy_find_device(dn);
-
-		mvneta_fixed_link_update(pp, phy);
-
-		put_device(&phy->mdio.dev);
-	}
-
 	return 0;
 
 err_netdev:
@@ -4383,16 +4489,14 @@ err_netdev:
 		mvneta_bm_pool_destroy(pp->bm_priv, pp->pool_short,
 				       1 << pp->id);
 	}
+	if (pp->phylink)
+		phylink_destroy(pp->phylink);
 	free_percpu(pp->stats);
 err_free_ports:
 	free_percpu(pp->ports);
 err_clk:
 	clk_disable_unprepare(pp->clk_bus);
 	clk_disable_unprepare(pp->clk);
-err_put_phy_node:
-	of_node_put(phy_node);
-	if (of_phy_is_fixed_link(dn))
-		of_phy_deregister_fixed_link(dn);
 err_free_irq:
 	irq_dispose_mapping(dev->irq);
 err_free_netdev:
@@ -4404,7 +4508,6 @@ err_free_netdev:
 static int mvneta_remove(struct platform_device *pdev)
 {
 	struct net_device  *dev = platform_get_drvdata(pdev);
-	struct device_node *dn = pdev->dev.of_node;
 	struct mvneta_port *pp = netdev_priv(dev);
 
 	unregister_netdev(dev);
@@ -4412,10 +4515,8 @@ static int mvneta_remove(struct platform
 	clk_disable_unprepare(pp->clk);
 	free_percpu(pp->ports);
 	free_percpu(pp->stats);
-	if (of_phy_is_fixed_link(dn))
-		of_phy_deregister_fixed_link(dn);
 	irq_dispose_mapping(dev->irq);
-	of_node_put(pp->phy_node);
+	phylink_destroy(pp->phylink);
 	free_netdev(dev);
 
 	if (pp->bm_priv) {
@@ -4467,9 +4568,6 @@ static int mvneta_resume(struct device *
 		return err;
 	}
 
-	if (pp->use_inband_status)
-		mvneta_fixed_link_update(pp, dev->phydev);
-
 	netif_device_attach(dev);
 	if (netif_running(dev)) {
 		mvneta_open(dev);
