net: dsa: mv88e6xxx: convert 88e6352 to phylink_pcs

Convert the 88E6352 SERDES code to use the phylink_pcs infrastructure.

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

5 files changed, 399 insertions, 254 deletions

diff --git a/drivers/net/dsa/mv88e6xxx/Makefile b/drivers/net/dsa/mv88e6xxx/Makefile
index fd370e3bb1f1..03dd49d0c71f 100644
--- a/drivers/net/dsa/mv88e6xxx/Makefile
+++ b/drivers/net/dsa/mv88e6xxx/Makefile
@@ -10,6 +10,7 @@ mv88e6xxx-objs += global2_avb.o
 mv88e6xxx-objs += global2_scratch.o
 mv88e6xxx-$(CONFIG_NET_DSA_MV88E6XXX_PTP) += hwtstamp.o
 mv88e6xxx-objs += pcs-6185.o
+mv88e6xxx-objs += pcs-6352.o
 mv88e6xxx-objs += phy.o
 mv88e6xxx-objs += port.o
 mv88e6xxx-objs += port_hidden.o
diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 518982580858..914096621c10 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -4536,12 +4536,9 @@ static const struct mv88e6xxx_ops mv88e6172_ops = {
 	.vtu_loadpurge = mv88e6352_g1_vtu_loadpurge,
 	.stu_getnext = mv88e6352_g1_stu_getnext,
 	.stu_loadpurge = mv88e6352_g1_stu_loadpurge,
-	.serdes_get_lane = mv88e6352_serdes_get_lane,
-	.serdes_pcs_get_state = mv88e6352_serdes_pcs_get_state,
-	.serdes_pcs_config = mv88e6352_serdes_pcs_config,
-	.serdes_pcs_an_restart = mv88e6352_serdes_pcs_an_restart,
-	.serdes_pcs_link_up = mv88e6352_serdes_pcs_link_up,
-	.serdes_power = mv88e6352_serdes_power,
+	.pcs_init = mv88e6352_pcs_init,
+	.pcs_teardown = mv88e6352_pcs_teardown,
+	.pcs_select = mv88e6xxx_pcs_select,
 	.serdes_get_regs_len = mv88e6352_serdes_get_regs_len,
 	.serdes_get_regs = mv88e6352_serdes_get_regs,
 	.gpio_ops = &mv88e6352_gpio_ops,
@@ -4637,15 +4634,10 @@ static const struct mv88e6xxx_ops mv88e6176_ops = {
 	.vtu_loadpurge = mv88e6352_g1_vtu_loadpurge,
 	.stu_getnext = mv88e6352_g1_stu_getnext,
 	.stu_loadpurge = mv88e6352_g1_stu_loadpurge,
-	.serdes_get_lane = mv88e6352_serdes_get_lane,
-	.serdes_pcs_get_state = mv88e6352_serdes_pcs_get_state,
-	.serdes_pcs_config = mv88e6352_serdes_pcs_config,
-	.serdes_pcs_an_restart = mv88e6352_serdes_pcs_an_restart,
-	.serdes_pcs_link_up = mv88e6352_serdes_pcs_link_up,
-	.serdes_power = mv88e6352_serdes_power,
+	.pcs_init = mv88e6352_pcs_init,
+	.pcs_teardown = mv88e6352_pcs_teardown,
+	.pcs_select = mv88e6xxx_pcs_select,
 	.serdes_irq_mapping = mv88e6352_serdes_irq_mapping,
-	.serdes_irq_enable = mv88e6352_serdes_irq_enable,
-	.serdes_irq_status = mv88e6352_serdes_irq_status,
 	.serdes_get_regs_len = mv88e6352_serdes_get_regs_len,
 	.serdes_get_regs = mv88e6352_serdes_get_regs,
 	.serdes_set_tx_amplitude = mv88e6352_serdes_set_tx_amplitude,
@@ -4925,15 +4917,10 @@ static const struct mv88e6xxx_ops mv88e6240_ops = {
 	.vtu_loadpurge = mv88e6352_g1_vtu_loadpurge,
 	.stu_getnext = mv88e6352_g1_stu_getnext,
 	.stu_loadpurge = mv88e6352_g1_stu_loadpurge,
-	.serdes_get_lane = mv88e6352_serdes_get_lane,
-	.serdes_pcs_get_state = mv88e6352_serdes_pcs_get_state,
-	.serdes_pcs_config = mv88e6352_serdes_pcs_config,
-	.serdes_pcs_an_restart = mv88e6352_serdes_pcs_an_restart,
-	.serdes_pcs_link_up = mv88e6352_serdes_pcs_link_up,
-	.serdes_power = mv88e6352_serdes_power,
+	.pcs_init = mv88e6352_pcs_init,
+	.pcs_teardown = mv88e6352_pcs_teardown,
+	.pcs_select = mv88e6xxx_pcs_select,
 	.serdes_irq_mapping = mv88e6352_serdes_irq_mapping,
-	.serdes_irq_enable = mv88e6352_serdes_irq_enable,
-	.serdes_irq_status = mv88e6352_serdes_irq_status,
 	.serdes_get_regs_len = mv88e6352_serdes_get_regs_len,
 	.serdes_get_regs = mv88e6352_serdes_get_regs,
 	.serdes_set_tx_amplitude = mv88e6352_serdes_set_tx_amplitude,
@@ -5336,15 +5323,10 @@ static const struct mv88e6xxx_ops mv88e6352_ops = {
 	.vtu_loadpurge = mv88e6352_g1_vtu_loadpurge,
 	.stu_getnext = mv88e6352_g1_stu_getnext,
 	.stu_loadpurge = mv88e6352_g1_stu_loadpurge,
-	.serdes_get_lane = mv88e6352_serdes_get_lane,
-	.serdes_pcs_get_state = mv88e6352_serdes_pcs_get_state,
-	.serdes_pcs_config = mv88e6352_serdes_pcs_config,
-	.serdes_pcs_an_restart = mv88e6352_serdes_pcs_an_restart,
-	.serdes_pcs_link_up = mv88e6352_serdes_pcs_link_up,
-	.serdes_power = mv88e6352_serdes_power,
+	.pcs_init = mv88e6352_pcs_init,
+	.pcs_teardown = mv88e6352_pcs_teardown,
+	.pcs_select = mv88e6xxx_pcs_select,
 	.serdes_irq_mapping = mv88e6352_serdes_irq_mapping,
-	.serdes_irq_enable = mv88e6352_serdes_irq_enable,
-	.serdes_irq_status = mv88e6352_serdes_irq_status,
 	.gpio_ops = &mv88e6352_gpio_ops,
 	.avb_ops = &mv88e6352_avb_ops,
 	.ptp_ops = &mv88e6352_ptp_ops,
diff --git a/drivers/net/dsa/mv88e6xxx/pcs-6352.c b/drivers/net/dsa/mv88e6xxx/pcs-6352.c
new file mode 100644
index 000000000000..57a3b509b387
--- /dev/null
+++ b/drivers/net/dsa/mv88e6xxx/pcs-6352.c
@@ -0,0 +1,383 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Marvell 88E6352 family SERDES PCS support
+ *
+ * Copyright (c) 2008 Marvell Semiconductor
+ *
+ * Copyright (c) 2017 Andrew Lunn <andrew@lunn.ch>
+ */
+#include <linux/phylink.h>
+
+#include "global2.h"
+#include "port.h"
+#include "serdes.h"
+
+/* Definitions from drivers/net/phy/marvell.c, which would be good to reuse. */
+#define MII_M1011_PHY_STATUS		17
+#define MII_M1011_IMASK			18
+#define MII_M1011_IMASK_LINK_CHANGE	BIT(10)
+#define MII_M1011_IEVENT		19
+#define MII_M1011_IEVENT_LINK_CHANGE	BIT(10)
+#define MII_MARVELL_PHY_PAGE		22
+#define MII_MARVELL_FIBER_PAGE		1
+
+struct marvell_c22_pcs {
+	struct mdio_device mdio;
+	struct phylink_pcs phylink_pcs;
+	unsigned int irq;
+	char name[64];
+	bool (*link_check)(struct marvell_c22_pcs *mpcs);
+	void (*link_change)(struct marvell_c22_pcs *mpcs, bool up);
+	struct mv88e6xxx_port *port;
+};
+
+static struct marvell_c22_pcs *pcs_to_marvell_c22_pcs(struct phylink_pcs *pcs)
+{
+	return container_of(pcs, struct marvell_c22_pcs, phylink_pcs);
+}
+
+static int marvell_c22_pcs_set_fiber_page(struct marvell_c22_pcs *mpcs)
+{
+	u16 page;
+	int err;
+
+	mutex_lock(&mpcs->mdio.bus->mdio_lock);
+
+	err = __mdiodev_read(&mpcs->mdio, MII_MARVELL_PHY_PAGE);
+	if (err < 0) {
+		dev_err(mpcs->mdio.dev.parent,
+			"%s: can't read Serdes page register: %pe\n",
+			mpcs->name, ERR_PTR(err));
+		return err;
+	}
+
+	page = err;
+
+	err = __mdiodev_write(&mpcs->mdio, MII_MARVELL_PHY_PAGE,
+			      MII_MARVELL_FIBER_PAGE);
+	if (err) {
+		dev_err(mpcs->mdio.dev.parent,
+			"%s: can't set Serdes page register: %pe\n",
+			mpcs->name, ERR_PTR(err));
+		return err;
+	}
+
+	return page;
+}
+
+static int marvell_c22_pcs_restore_page(struct marvell_c22_pcs *mpcs,
+					int oldpage, int ret)
+{
+	int err;
+
+	if (oldpage >= 0) {
+		err = __mdiodev_write(&mpcs->mdio, MII_MARVELL_PHY_PAGE,
+				      oldpage);
+		if (err)
+			dev_err(mpcs->mdio.dev.parent,
+				"%s: can't restore Serdes page register: %pe\n",
+				mpcs->name, ERR_PTR(err));
+		if (!err || ret < 0)
+			err = ret;
+	} else {
+		err = oldpage;
+	}
+	mutex_unlock(&mpcs->mdio.bus->mdio_lock);
+
+	return err;
+}
+
+static irqreturn_t marvell_c22_pcs_handle_irq(int irq, void *dev_id)
+{
+	struct marvell_c22_pcs *mpcs = dev_id;
+	irqreturn_t status = IRQ_NONE;
+	int err, oldpage;
+
+	oldpage = marvell_c22_pcs_set_fiber_page(mpcs);
+	if (oldpage < 0)
+		goto fail;
+
+	err = __mdiodev_read(&mpcs->mdio, MII_M1011_IEVENT);
+	if (err >= 0 && err & MII_M1011_IEVENT_LINK_CHANGE) {
+		err = __mdiodev_read(&mpcs->mdio, MII_BMSR);
+		if (err >= 0)
+			mpcs->link_change(mpcs, !!(err & BMSR_LSTATUS));
+		status = IRQ_HANDLED;
+	}
+
+fail:
+	marvell_c22_pcs_restore_page(mpcs, oldpage, 0);
+
+	return status;
+}
+
+static int marvell_c22_pcs_modify(struct marvell_c22_pcs *mpcs, u8 reg,
+				  u16 mask, u16 val)
+{
+	int oldpage, err = 0;
+
+	oldpage = marvell_c22_pcs_set_fiber_page(mpcs);
+	if (oldpage >= 0)
+		err = __mdiodev_modify(&mpcs->mdio, reg, mask, val);
+
+	return marvell_c22_pcs_restore_page(mpcs, oldpage, err);
+}
+
+static int marvell_c22_pcs_power(struct marvell_c22_pcs *mpcs,
+				 bool on)
+{
+	u16 val = on ? 0 : BMCR_PDOWN;
+
+	return marvell_c22_pcs_modify(mpcs, MII_BMCR, BMCR_PDOWN, val);
+}
+
+static int marvell_c22_pcs_control_irq(struct marvell_c22_pcs *mpcs,
+				       bool enable)
+{
+	u16 val = enable ? MII_M1011_IMASK_LINK_CHANGE : 0;
+
+	return marvell_c22_pcs_modify(mpcs, MII_M1011_IMASK,
+				      MII_M1011_IMASK_LINK_CHANGE, val);
+}
+
+static int marvell_c22_pcs_enable(struct phylink_pcs *pcs)
+{
+	struct marvell_c22_pcs *mpcs = pcs_to_marvell_c22_pcs(pcs);
+	int err;
+
+	err = marvell_c22_pcs_power(mpcs, true);
+	if (err)
+		return err;
+
+	return marvell_c22_pcs_control_irq(mpcs, !!mpcs->irq);
+}
+
+static void marvell_c22_pcs_disable(struct phylink_pcs *pcs)
+{
+	struct marvell_c22_pcs *mpcs = pcs_to_marvell_c22_pcs(pcs);
+
+	marvell_c22_pcs_control_irq(mpcs, false);
+	marvell_c22_pcs_power(mpcs, false);
+}
+
+static void marvell_c22_pcs_get_state(struct phylink_pcs *pcs,
+				      struct phylink_link_state *state)
+{
+	struct marvell_c22_pcs *mpcs = pcs_to_marvell_c22_pcs(pcs);
+	int oldpage, bmsr, lpa, status;
+
+	state->link = false;
+
+	if (mpcs->link_check && !mpcs->link_check(mpcs))
+		return;
+
+	oldpage = marvell_c22_pcs_set_fiber_page(mpcs);
+	if (oldpage >= 0) {
+		bmsr = __mdiodev_read(&mpcs->mdio, MII_BMSR);
+		lpa = __mdiodev_read(&mpcs->mdio, MII_LPA);
+		status = __mdiodev_read(&mpcs->mdio, MII_M1011_PHY_STATUS);
+	}
+
+	if (marvell_c22_pcs_restore_page(mpcs, oldpage, 0) >= 0 &&
+	    bmsr >= 0 && lpa >= 0 && status >= 0)
+		mv88e6xxx_pcs_decode_state(mpcs->mdio.dev.parent, bmsr, lpa,
+					   status, state);
+}
+
+static int marvell_c22_pcs_config(struct phylink_pcs *pcs,
+				  unsigned int mode,
+				  phy_interface_t interface,
+				  const unsigned long *advertising,
+				  bool permit_pause_to_mac)
+{
+	struct marvell_c22_pcs *mpcs = pcs_to_marvell_c22_pcs(pcs);
+	int oldpage, adv, err, ret = 0;
+	u16 bmcr;
+
+	adv = phylink_mii_c22_pcs_encode_advertisement(interface, advertising);
+	if (adv < 0)
+		return 0;
+
+	bmcr = phylink_pcs_inband(mode, interface, advertising) ?
+			BMCR_ANENABLE : 0;
+
+	oldpage = marvell_c22_pcs_set_fiber_page(mpcs);
+	if (oldpage < 0)
+		goto restore;
+
+	err = __mdiodev_modify_changed(&mpcs->mdio, MII_ADVERTISE, 0xffff, adv);
+	ret = err;
+	if (err < 0)
+		goto restore;
+
+	err = __mdiodev_modify_changed(&mpcs->mdio, MII_BMCR, BMCR_ANENABLE,
+				       bmcr);
+	if (err < 0) {
+		ret = err;
+		goto restore;
+	}
+
+	/* If the ANENABLE bit was changed, the PHY will restart negotiation,
+	 * so we don't need to flag a change to trigger its own restart.
+	 */
+	if (err)
+		ret = 0;
+
+restore:
+	return marvell_c22_pcs_restore_page(mpcs, oldpage, ret);
+}
+
+static void marvell_c22_pcs_an_restart(struct phylink_pcs *pcs)
+{
+	struct marvell_c22_pcs *mpcs = pcs_to_marvell_c22_pcs(pcs);
+
+	marvell_c22_pcs_modify(mpcs, MII_BMCR, BMCR_ANRESTART, BMCR_ANRESTART);
+}
+
+static void marvell_c22_pcs_link_up(struct phylink_pcs *pcs, unsigned int mode,
+				    phy_interface_t interface, int speed,
+				    int duplex)
+{
+	struct marvell_c22_pcs *mpcs = pcs_to_marvell_c22_pcs(pcs);
+	u16 bmcr;
+	int err;
+
+	if (phylink_autoneg_inband(mode))
+		return;
+
+	bmcr = mii_bmcr_encode_fixed(speed, duplex);
+
+	err = marvell_c22_pcs_modify(mpcs, MII_BMCR, BMCR_SPEED100 |
+				     BMCR_FULLDPLX | BMCR_SPEED1000, bmcr);
+	if (err)
+		dev_err(mpcs->mdio.dev.parent,
+			"%s: failed to configure mpcs: %pe\n", mpcs->name,
+			ERR_PTR(err));
+}
+
+static const struct phylink_pcs_ops marvell_c22_pcs_ops = {
+	.pcs_enable = marvell_c22_pcs_enable,
+	.pcs_disable = marvell_c22_pcs_disable,
+	.pcs_get_state = marvell_c22_pcs_get_state,
+	.pcs_config = marvell_c22_pcs_config,
+	.pcs_an_restart = marvell_c22_pcs_an_restart,
+	.pcs_link_up = marvell_c22_pcs_link_up,
+};
+
+static struct marvell_c22_pcs *marvell_c22_pcs_alloc(struct device *dev,
+						     struct mii_bus *bus,
+						     unsigned int addr)
+{
+	struct marvell_c22_pcs *mpcs;
+
+	mpcs = devm_kzalloc(dev, sizeof(*mpcs), GFP_KERNEL);
+	if (!mpcs)
+		return NULL;
+
+	/* we never initialise or register mpcs->mdio.dev with the
+	 * driver model, so devm_kzalloc() above is safe.
+	 */
+	mpcs->mdio.dev.parent = dev;
+	mpcs->mdio.bus = bus;
+	mpcs->mdio.addr = addr;
+	mpcs->phylink_pcs.ops = &marvell_c22_pcs_ops;
+
+	return mpcs;
+}
+
+static int marvell_c22_pcs_setup_irq(struct marvell_c22_pcs *mpcs,
+				     unsigned int irq)
+{
+	int err;
+
+	mpcs->phylink_pcs.poll = !irq;
+	mpcs->irq = irq;
+
+	if (irq) {
+		err = devm_request_threaded_irq(mpcs->mdio.dev.parent, irq,
+						NULL,
+						marvell_c22_pcs_handle_irq,
+						IRQF_ONESHOT, mpcs->name,
+						mpcs);
+		if (err)
+			return err;
+	}
+
+	return 0;
+}
+
+/* mv88e6352 specifics */
+
+static bool mv88e6352_pcs_link_check(struct marvell_c22_pcs *mpcs)
+{
+	struct mv88e6xxx_port *port = mpcs->port;
+	u8 cmode;
+
+	/* Port 4 can be in auto-media mode. Check that the port is
+	 * associated with the mpcs.
+	 */
+	mv88e6xxx_reg_lock(port->chip);
+	port->chip->info->ops->port_get_cmode(port->chip, port->port, &cmode);
+	mv88e6xxx_reg_unlock(port->chip);
+
+	return cmode == MV88E6XXX_PORT_STS_CMODE_100BASEX ||
+	       cmode == MV88E6XXX_PORT_STS_CMODE_1000BASEX ||
+	       cmode == MV88E6XXX_PORT_STS_CMODE_SGMII;
+}
+
+static void mv88e6352_pcs_link_change(struct marvell_c22_pcs *mpcs, bool up)
+{
+	struct mv88e6xxx_port *port = mpcs->port;
+
+	dsa_port_phylink_mac_change(port->chip->ds, port->port, up);
+}
+
+int mv88e6352_pcs_init(struct mv88e6xxx_chip *chip, int port)
+{
+	struct marvell_c22_pcs *mpcs;
+	struct mii_bus *bus;
+	struct device *dev;
+	unsigned int irq;
+	int err;
+
+	mv88e6xxx_reg_lock(chip);
+	err = mv88e6352_g2_scratch_port_has_serdes(chip, port);
+	mv88e6xxx_reg_unlock(chip);
+	if (err <= 0)
+		return err;
+
+	irq = mv88e6xxx_serdes_irq_mapping(chip, port);
+	bus = mv88e6xxx_default_mdio_bus(chip);
+	dev = chip->dev;
+
+	mpcs = marvell_c22_pcs_alloc(dev, bus, MV88E6352_ADDR_SERDES);
+	if (!mpcs)
+		return -ENOMEM;
+
+	snprintf(mpcs->name, sizeof(mpcs->name),
+		 "mv88e6xxx-%s-serdes-%d", dev_name(dev), port);
+
+	mpcs->link_check = mv88e6352_pcs_link_check;
+	mpcs->link_change = mv88e6352_pcs_link_change;
+	mpcs->port = &chip->ports[port];
+
+	err = marvell_c22_pcs_setup_irq(mpcs, irq);
+	if (err)
+		return err;
+
+	chip->ports[port].pcs_private = &mpcs->phylink_pcs;
+
+	return 0;
+}
+
+void mv88e6352_pcs_teardown(struct mv88e6xxx_chip *chip, int port)
+{
+	struct marvell_c22_pcs *mpcs;
+	struct phylink_pcs *pcs;
+
+	pcs = chip->ports[port].pcs_private;
+	mpcs = pcs_to_marvell_c22_pcs(pcs);
+
+	if (mpcs && mpcs->irq)
+		free_irq(mpcs->irq, mpcs);
+}
diff --git a/drivers/net/dsa/mv88e6xxx/serdes.c b/drivers/net/dsa/mv88e6xxx/serdes.c
index 1d05319d2ffd..6cb85d58e0c2 100644
--- a/drivers/net/dsa/mv88e6xxx/serdes.c
+++ b/drivers/net/dsa/mv88e6xxx/serdes.c
@@ -41,14 +41,6 @@ static int mv88e6390_serdes_read(struct mv88e6xxx_chip *chip,
 	return mv88e6xxx_phy_read(chip, lane, reg_c45, val);
 }
 
-static int mv88e6390_serdes_write(struct mv88e6xxx_chip *chip,
-				  int lane, int device, int reg, u16 val)
-{
-	int reg_c45 = MII_ADDR_C45 | device << 16 | reg;
-
-	return mv88e6xxx_phy_write(chip, lane, reg_c45, val);
-}
-
 int mv88e6xxx_pcs_decode_state(struct device *dev, u16 bmsr, u16 lpa,
 			       u16 status, struct phylink_link_state *state)
 {
@@ -120,160 +112,6 @@ int mv88e6xxx_pcs_decode_state(struct device *dev, u16 bmsr, u16 lpa,
 	return 0;
 }
 
-int mv88e6352_serdes_power(struct mv88e6xxx_chip *chip, int port, int lane,
-			   bool up)
-{
-	u16 val, new_val;
-	int err;
-
-	err = mv88e6352_serdes_read(chip, MII_BMCR, &val);
-	if (err)
-		return err;
-
-	if (up)
-		new_val = val & ~BMCR_PDOWN;
-	else
-		new_val = val | BMCR_PDOWN;
-
-	if (val != new_val)
-		err = mv88e6352_serdes_write(chip, MII_BMCR, new_val);
-
-	return err;
-}
-
-int mv88e6352_serdes_pcs_config(struct mv88e6xxx_chip *chip, int port,
-				int lane, unsigned int mode,
-				phy_interface_t interface,
-				const unsigned long *advertise)
-{
-	u16 adv, bmcr, val;
-	bool changed;
-	int err;
-
-	switch (interface) {
-	case PHY_INTERFACE_MODE_SGMII:
-		adv = 0x0001;
-		break;
-
-	case PHY_INTERFACE_MODE_1000BASEX:
-		adv = linkmode_adv_to_mii_adv_x(advertise,
-					ETHTOOL_LINK_MODE_1000baseX_Full_BIT);
-		break;
-
-	default:
-		return 0;
-	}
-
-	err = mv88e6352_serdes_read(chip, MII_ADVERTISE, &val);
-	if (err)
-		return err;
-
-	changed = val != adv;
-	if (changed) {
-		err = mv88e6352_serdes_write(chip, MII_ADVERTISE, adv);
-		if (err)
-			return err;
-	}
-
-	err = mv88e6352_serdes_read(chip, MII_BMCR, &val);
-	if (err)
-		return err;
-
-	if (phylink_autoneg_inband(mode))
-		bmcr = val | BMCR_ANENABLE;
-	else
-		bmcr = val & ~BMCR_ANENABLE;
-
-	if (bmcr == val)
-		return changed;
-
-	return mv88e6352_serdes_write(chip, MII_BMCR, bmcr);
-}
-
-int mv88e6352_serdes_pcs_get_state(struct mv88e6xxx_chip *chip, int port,
-				   int lane, struct phylink_link_state *state)
-{
-	u16 bmsr, lpa, status;
-	int err;
-
-	err = mv88e6352_serdes_read(chip, MII_BMSR, &bmsr);
-	if (err) {
-		dev_err(chip->dev, "can't read Serdes PHY BMSR: %d\n", err);
-		return err;
-	}
-
-	err = mv88e6352_serdes_read(chip, 0x11, &status);
-	if (err) {
-		dev_err(chip->dev, "can't read Serdes PHY status: %d\n", err);
-		return err;
-	}
-
-	err = mv88e6352_serdes_read(chip, MII_LPA, &lpa);
-	if (err) {
-		dev_err(chip->dev, "can't read Serdes PHY LPA: %d\n", err);
-		return err;
-	}
-
-	return mv88e6xxx_pcs_decode_state(chip->dev, bmsr, lpa, status, state);
-}
-
-int mv88e6352_serdes_pcs_an_restart(struct mv88e6xxx_chip *chip, int port,
-				    int lane)
-{
-	u16 bmcr;
-	int err;
-
-	err = mv88e6352_serdes_read(chip, MII_BMCR, &bmcr);
-	if (err)
-		return err;
-
-	return mv88e6352_serdes_write(chip, MII_BMCR, bmcr | BMCR_ANRESTART);
-}
-
-int mv88e6352_serdes_pcs_link_up(struct mv88e6xxx_chip *chip, int port,
-				 int lane, int speed, int duplex)
-{
-	u16 val, bmcr;
-	int err;
-
-	err = mv88e6352_serdes_read(chip, MII_BMCR, &val);
-	if (err)
-		return err;
-
-	bmcr = val & ~(BMCR_SPEED100 | BMCR_FULLDPLX | BMCR_SPEED1000);
-	switch (speed) {
-	case SPEED_1000:
-		bmcr |= BMCR_SPEED1000;
-		break;
-	case SPEED_100:
-		bmcr |= BMCR_SPEED100;
-		break;
-	case SPEED_10:
-		break;
-	}
-
-	if (duplex == DUPLEX_FULL)
-		bmcr |= BMCR_FULLDPLX;
-
-	if (bmcr == val)
-		return 0;
-
-	return mv88e6352_serdes_write(chip, MII_BMCR, bmcr);
-}
-
-int mv88e6352_serdes_get_lane(struct mv88e6xxx_chip *chip, int port)
-{
-	u8 cmode = chip->ports[port].cmode;
-	int lane = -ENODEV;
-
-	if ((cmode == MV88E6XXX_PORT_STS_CMODE_100BASEX) ||
-	    (cmode == MV88E6XXX_PORT_STS_CMODE_1000BASEX) ||
-	    (cmode == MV88E6XXX_PORT_STS_CMODE_SGMII))
-		lane = 0xff; /* Unused */
-
-	return lane;
-}
-
 struct mv88e6352_serdes_hw_stat {
 	char string[ETH_GSTRING_LEN];
 	int sizeof_stat;
@@ -366,51 +204,6 @@ int mv88e6352_serdes_get_stats(struct mv88e6xxx_chip *chip, int port,
 	return ARRAY_SIZE(mv88e6352_serdes_hw_stats);
 }
 
-static void mv88e6352_serdes_irq_link(struct mv88e6xxx_chip *chip, int port)
-{
-	u16 bmsr;
-	int err;
-
-	/* If the link has dropped, we want to know about it. */
-	err = mv88e6352_serdes_read(chip, MII_BMSR, &bmsr);
-	if (err) {
-		dev_err(chip->dev, "can't read Serdes BMSR: %d\n", err);
-		return;
-	}
-
-	dsa_port_phylink_mac_change(chip->ds, port, !!(bmsr & BMSR_LSTATUS));
-}
-
-irqreturn_t mv88e6352_serdes_irq_status(struct mv88e6xxx_chip *chip, int port,
-					int lane)
-{
-	irqreturn_t ret = IRQ_NONE;
-	u16 status;
-	int err;
-
-	err = mv88e6352_serdes_read(chip, MV88E6352_SERDES_INT_STATUS, &status);
-	if (err)
-		return ret;
-
-	if (status & MV88E6352_SERDES_INT_LINK_CHANGE) {
-		ret = IRQ_HANDLED;
-		mv88e6352_serdes_irq_link(chip, port);
-	}
-
-	return ret;
-}
-
-int mv88e6352_serdes_irq_enable(struct mv88e6xxx_chip *chip, int port, int lane,
-				bool enable)
-{
-	u16 val = 0;
-
-	if (enable)
-		val |= MV88E6352_SERDES_INT_LINK_CHANGE;
-
-	return mv88e6352_serdes_write(chip, MV88E6352_SERDES_INT_ENABLE, val);
-}
-
 unsigned int mv88e6352_serdes_irq_mapping(struct mv88e6xxx_chip *chip, int port)
 {
 	return irq_find_mapping(chip->g2_irq.domain, MV88E6352_SERDES_IRQ);
diff --git a/drivers/net/dsa/mv88e6xxx/serdes.h b/drivers/net/dsa/mv88e6xxx/serdes.h
index 72955f55e92c..7467463b1080 100644
--- a/drivers/net/dsa/mv88e6xxx/serdes.h
+++ b/drivers/net/dsa/mv88e6xxx/serdes.h
@@ -109,51 +109,34 @@ int mv88e6xxx_pcs_decode_state(struct device *dev, u16 bmsr, u16 lpa,
 			       u16 status, struct phylink_link_state *state);
 
 int mv88e6341_serdes_get_lane(struct mv88e6xxx_chip *chip, int port);
-int mv88e6352_serdes_get_lane(struct mv88e6xxx_chip *chip, int port);
 int mv88e6390_serdes_get_lane(struct mv88e6xxx_chip *chip, int port);
 int mv88e6390x_serdes_get_lane(struct mv88e6xxx_chip *chip, int port);
 int mv88e6393x_serdes_get_lane(struct mv88e6xxx_chip *chip, int port);
-int mv88e6352_serdes_pcs_config(struct mv88e6xxx_chip *chip, int port,
-				int lane, unsigned int mode,
-				phy_interface_t interface,
-				const unsigned long *advertise);
 int mv88e6390_serdes_pcs_config(struct mv88e6xxx_chip *chip, int port,
 				int lane, unsigned int mode,
 				phy_interface_t interface,
 				const unsigned long *advertise);
-int mv88e6352_serdes_pcs_get_state(struct mv88e6xxx_chip *chip, int port,
-				   int lane, struct phylink_link_state *state);
 int mv88e6390_serdes_pcs_get_state(struct mv88e6xxx_chip *chip, int port,
 				   int lane, struct phylink_link_state *state);
 int mv88e6393x_serdes_pcs_get_state(struct mv88e6xxx_chip *chip, int port,
 				    int lane, struct phylink_link_state *state);
-int mv88e6352_serdes_pcs_an_restart(struct mv88e6xxx_chip *chip, int port,
-				    int lane);
 int mv88e6390_serdes_pcs_an_restart(struct mv88e6xxx_chip *chip, int port,
 				    int lane);
-int mv88e6352_serdes_pcs_link_up(struct mv88e6xxx_chip *chip, int port,
-				 int lane, int speed, int duplex);
 int mv88e6390_serdes_pcs_link_up(struct mv88e6xxx_chip *chip, int port,
 				 int lane, int speed, int duplex);
 unsigned int mv88e6352_serdes_irq_mapping(struct mv88e6xxx_chip *chip,
 					  int port);
 unsigned int mv88e6390_serdes_irq_mapping(struct mv88e6xxx_chip *chip,
 					  int port);
-int mv88e6352_serdes_power(struct mv88e6xxx_chip *chip, int port, int lane,
-			   bool on);
 int mv88e6390_serdes_power(struct mv88e6xxx_chip *chip, int port, int lane,
 			   bool on);
 int mv88e6393x_serdes_power(struct mv88e6xxx_chip *chip, int port, int lane,
 			    bool on);
 int mv88e6393x_serdes_setup_errata(struct mv88e6xxx_chip *chip);
-int mv88e6352_serdes_irq_enable(struct mv88e6xxx_chip *chip, int port, int lane,
-				bool enable);
 int mv88e6390_serdes_irq_enable(struct mv88e6xxx_chip *chip, int port, int lane,
 				bool enable);
 int mv88e6393x_serdes_irq_enable(struct mv88e6xxx_chip *chip, int port,
 				 int lane, bool enable);
-irqreturn_t mv88e6352_serdes_irq_status(struct mv88e6xxx_chip *chip, int port,
-					int lane);
 irqreturn_t mv88e6390_serdes_irq_status(struct mv88e6xxx_chip *chip, int port,
 					int lane);
 irqreturn_t mv88e6393x_serdes_irq_status(struct mv88e6xxx_chip *chip, int port,
@@ -243,4 +226,7 @@ mv88e6xxx_serdes_irq_status(struct mv88e6xxx_chip *chip, int port, int lane)
 
 int mv88e6185_pcs_init(struct mv88e6xxx_chip *chip, int port);
 
+int mv88e6352_pcs_init(struct mv88e6xxx_chip *chip, int port);
+void mv88e6352_pcs_teardown(struct mv88e6xxx_chip *chip, int port);
+
 #endif