drivers/net/phy/marvell10g.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0+
 /*
  * Marvell 10G 88x3310 PHY driver
  *
  * Based upon the ID registers, this PHY appears to be a mixture of IPs
  * from two different companies.
  *
  * There appears to be several different data paths through the PHY which
  * are automatically managed by the PHY.  The following has been determined
  * via observation and experimentation for a setup using single-lane Serdes:
  *
  *       SGMII PHYXS -- BASE-T PCS -- 10G PMA -- AN -- Copper (for <= 1G)
  *  10GBASE-KR PHYXS -- BASE-T PCS -- 10G PMA -- AN -- Copper (for 10G)
  *  10GBASE-KR PHYXS -- BASE-R PCS -- Fiber
  *
  * With XAUI, observation shows:
  *
  *        XAUI PHYXS -- <appropriate PCS as above>
  *
  * and no switching of the host interface mode occurs.
  *
  * If both the fiber and copper ports are connected, the first to gain
  * link takes priority and the other port is completely locked out.
  */
 #include <linux/ctype.h>
 #include <linux/hwmon.h>
 #include <linux/marvell_phy.h>
 #include <linux/phy.h>

 #define MV_PHY_ALASKA_NBT_QUIRK_MASK	0xfffffffe
 #define MV_PHY_ALASKA_NBT_QUIRK_REV	(MARVELL_PHY_ID_88X3310 | 0xa)

 enum {
 	MV_PMA_BOOT		= 0xc050,
 	MV_PMA_BOOT_FATAL	= BIT(0),

 	MV_PCS_BASE_T		= 0x0000,
 	MV_PCS_BASE_R		= 0x1000,
 	MV_PCS_1000BASEX	= 0x2000,

 	MV_PCS_PAIRSWAP		= 0x8182,
 	MV_PCS_PAIRSWAP_MASK	= 0x0003,
 	MV_PCS_PAIRSWAP_AB	= 0x0002,
 	MV_PCS_PAIRSWAP_NONE	= 0x0003,

 	/* These registers appear at 0x800X and 0xa00X - the 0xa00X control
 	 * registers appear to set themselves to the 0x800X when AN is
 	 * restarted, but status registers appear readable from either.
 	 */
 	MV_AN_CTRL1000		= 0x8000, /* 1000base-T control register */
 	MV_AN_STAT1000		= 0x8001, /* 1000base-T status register */

 	/* Vendor2 MMD registers */
 	MV_V2_PORT_CTRL		= 0xf001,
 	MV_V2_PORT_CTRL_PWRDOWN = 0x0800,
 	MV_V2_TEMP_CTRL		= 0xf08a,
 	MV_V2_TEMP_CTRL_MASK	= 0xc000,
 	MV_V2_TEMP_CTRL_SAMPLE	= 0x0000,
 	MV_V2_TEMP_CTRL_DISABLE	= 0xc000,
 	MV_V2_TEMP		= 0xf08c,
 	MV_V2_TEMP_UNKNOWN	= 0x9600, /* unknown function */
 };

 struct mv3310_priv {
 	struct device *hwmon_dev;
 	char *hwmon_name;
 };

 #ifdef CONFIG_HWMON
 static umode_t mv3310_hwmon_is_visible(const void *data,
 				       enum hwmon_sensor_types type,
 				       u32 attr, int channel)
 {
 	if (type == hwmon_chip && attr == hwmon_chip_update_interval)
 		return 0444;
 	if (type == hwmon_temp && attr == hwmon_temp_input)
 		return 0444;
 	return 0;
 }

 static int mv3310_hwmon_read(struct device *dev, enum hwmon_sensor_types type,
 			     u32 attr, int channel, long *value)
 {
 	struct phy_device *phydev = dev_get_drvdata(dev);
 	int temp;

 	if (type == hwmon_chip && attr == hwmon_chip_update_interval) {
 		*value = MSEC_PER_SEC;
 		return 0;
 	}

 	if (type == hwmon_temp && attr == hwmon_temp_input) {
 		temp = phy_read_mmd(phydev, MDIO_MMD_VEND2, MV_V2_TEMP);
 		if (temp < 0)
 			return temp;

 		*value = ((temp & 0xff) - 75) * 1000;

 		return 0;
 	}

 	return -EOPNOTSUPP;
 }

 static const struct hwmon_ops mv3310_hwmon_ops = {
 	.is_visible = mv3310_hwmon_is_visible,
 	.read = mv3310_hwmon_read,
 };

 static u32 mv3310_hwmon_chip_config[] = {
 	HWMON_C_REGISTER_TZ | HWMON_C_UPDATE_INTERVAL,
 	0,
 };

 static const struct hwmon_channel_info mv3310_hwmon_chip = {
 	.type = hwmon_chip,
 	.config = mv3310_hwmon_chip_config,
 };

 static u32 mv3310_hwmon_temp_config[] = {
 	HWMON_T_INPUT,
 	0,
 };

 static const struct hwmon_channel_info mv3310_hwmon_temp = {
 	.type = hwmon_temp,
 	.config = mv3310_hwmon_temp_config,
 };

 static const struct hwmon_channel_info *mv3310_hwmon_info[] = {
 	&mv3310_hwmon_chip,
 	&mv3310_hwmon_temp,
 	NULL,
 };

 static const struct hwmon_chip_info mv3310_hwmon_chip_info = {
 	.ops = &mv3310_hwmon_ops,
 	.info = mv3310_hwmon_info,
 };

 static int mv3310_hwmon_config(struct phy_device *phydev, bool enable)
 {
 	u16 val;
 	int ret;

 	ret = phy_write_mmd(phydev, MDIO_MMD_VEND2, MV_V2_TEMP,
 			    MV_V2_TEMP_UNKNOWN);
 	if (ret < 0)
 		return ret;

 	val = enable ? MV_V2_TEMP_CTRL_SAMPLE : MV_V2_TEMP_CTRL_DISABLE;

 	return phy_modify_mmd(phydev, MDIO_MMD_VEND2, MV_V2_TEMP_CTRL,
 			      MV_V2_TEMP_CTRL_MASK, val);
 }

 static void mv3310_hwmon_disable(void *data)
 {
 	struct phy_device *phydev = data;

 	mv3310_hwmon_config(phydev, false);
 }

 static int mv3310_hwmon_probe(struct phy_device *phydev)
 {
 	struct device *dev = &phydev->mdio.dev;
 	struct mv3310_priv *priv = dev_get_drvdata(&phydev->mdio.dev);
 	int i, j, ret;

 	priv->hwmon_name = devm_kstrdup(dev, dev_name(dev), GFP_KERNEL);
 	if (!priv->hwmon_name)
 		return -ENODEV;

 	for (i = j = 0; priv->hwmon_name[i]; i++) {
 		if (isalnum(priv->hwmon_name[i])) {
 			if (i != j)
 				priv->hwmon_name[j] = priv->hwmon_name[i];
 			j++;
 		}
 	}
 	priv->hwmon_name[j] = '\0';

 	ret = mv3310_hwmon_config(phydev, true);
 	if (ret)
 		return ret;

 	ret = devm_add_action_or_reset(dev, mv3310_hwmon_disable, phydev);
 	if (ret)
 		return ret;

 	priv->hwmon_dev = devm_hwmon_device_register_with_info(dev,
 				priv->hwmon_name, phydev,
 				&mv3310_hwmon_chip_info, NULL);

 	return PTR_ERR_OR_ZERO(priv->hwmon_dev);
 }
 #else
 static inline int mv3310_hwmon_config(struct phy_device *phydev, bool enable)
 {
 	return 0;
 }

 static int mv3310_hwmon_probe(struct phy_device *phydev)
 {
 	return 0;
 }
 #endif

 static int mv3310_probe(struct phy_device *phydev)
 {
 	struct mv3310_priv *priv;
 	u32 mmd_mask = MDIO_DEVS_PMAPMD | MDIO_DEVS_AN;
 	int ret;

 	if (!phydev->is_c45 ||
 	    (phydev->c45_ids.devices_in_package & mmd_mask) != mmd_mask)
 		return -ENODEV;

 	ret = phy_read_mmd(phydev, MDIO_MMD_PMAPMD, MV_PMA_BOOT);
 	if (ret < 0)
 		return ret;

 	if (ret & MV_PMA_BOOT_FATAL) {
 		dev_warn(&phydev->mdio.dev,
 			 "PHY failed to boot firmware, status=%04x\n", ret);
 		return -ENODEV;
 	}

 	priv = devm_kzalloc(&phydev->mdio.dev, sizeof(*priv), GFP_KERNEL);
 	if (!priv)
 		return -ENOMEM;

 	dev_set_drvdata(&phydev->mdio.dev, priv);

 	ret = mv3310_hwmon_probe(phydev);
 	if (ret)
 		return ret;

 	return 0;
 }

 static int mv3310_suspend(struct phy_device *phydev)
 {
 	return phy_set_bits_mmd(phydev, MDIO_MMD_VEND2, MV_V2_PORT_CTRL,
 				MV_V2_PORT_CTRL_PWRDOWN);
 }

 static int mv3310_resume(struct phy_device *phydev)
 {
 	int ret;

 	ret = phy_clear_bits_mmd(phydev, MDIO_MMD_VEND2, MV_V2_PORT_CTRL,
 				 MV_V2_PORT_CTRL_PWRDOWN);
 	if (ret)
 		return ret;

 	return mv3310_hwmon_config(phydev, true);
 }

 /* Some PHYs in the Alaska family such as the 88X3310 and the 88E2010
  * don't set bit 14 in PMA Extended Abilities (1.11), although they do
  * support 2.5GBASET and 5GBASET. For these models, we can still read their
  * 2.5G/5G extended abilities register (1.21). We detect these models based on
  * the PMA device identifier, with a mask matching models known to have this
  * issue
  */
 static bool mv3310_has_pma_ngbaset_quirk(struct phy_device *phydev)
 {
 	if (!(phydev->c45_ids.devices_in_package & MDIO_DEVS_PMAPMD))
 		return false;

 	/* Only some revisions of the 88X3310 family PMA seem to be impacted */
 	return (phydev->c45_ids.device_ids[MDIO_MMD_PMAPMD] &
 		MV_PHY_ALASKA_NBT_QUIRK_MASK) == MV_PHY_ALASKA_NBT_QUIRK_REV;
 }

 static int mv3310_config_init(struct phy_device *phydev)
 {
 	/* Check that the PHY interface type is compatible */
 	if (phydev->interface != PHY_INTERFACE_MODE_SGMII &&
 	    phydev->interface != PHY_INTERFACE_MODE_2500BASEX &&
 	    phydev->interface != PHY_INTERFACE_MODE_XAUI &&
 	    phydev->interface != PHY_INTERFACE_MODE_RXAUI &&
 	    phydev->interface != PHY_INTERFACE_MODE_10GKR)
 		return -ENODEV;

 	return 0;
 }

 static int mv3310_get_features(struct phy_device *phydev)
 {
 	int ret, val;

 	ret = genphy_c45_pma_read_abilities(phydev);
 	if (ret)
 		return ret;

 	if (mv3310_has_pma_ngbaset_quirk(phydev)) {
 		val = phy_read_mmd(phydev, MDIO_MMD_PMAPMD,
 				   MDIO_PMA_NG_EXTABLE);
 		if (val < 0)
 			return val;

 		linkmode_mod_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT,
 				 phydev->supported,
 				 val & MDIO_PMA_NG_EXTABLE_2_5GBT);

 		linkmode_mod_bit(ETHTOOL_LINK_MODE_5000baseT_Full_BIT,
 				 phydev->supported,
 				 val & MDIO_PMA_NG_EXTABLE_5GBT);
 	}

 	return 0;
 }

 static int mv3310_config_aneg(struct phy_device *phydev)
 {
 	bool changed = false;
 	u16 reg;
 	int ret;

 	/* We don't support manual MDI control */
 	phydev->mdix_ctrl = ETH_TP_MDI_AUTO;

 	if (phydev->autoneg == AUTONEG_DISABLE)
 		return genphy_c45_pma_setup_forced(phydev);

 	ret = genphy_c45_an_config_aneg(phydev);
 	if (ret < 0)
 		return ret;
 	if (ret > 0)
 		changed = true;

 	/* Clause 45 has no standardized support for 1000BaseT, therefore
 	 * use vendor registers for this mode.
 	 */
 	reg = linkmode_adv_to_mii_ctrl1000_t(phydev->advertising);
 	ret = phy_modify_mmd_changed(phydev, MDIO_MMD_AN, MV_AN_CTRL1000,
 			     ADVERTISE_1000FULL | ADVERTISE_1000HALF, reg);
 	if (ret < 0)
 		return ret;
 	if (ret > 0)
 		changed = true;

 	return genphy_c45_check_and_restart_aneg(phydev, changed);
 }

 static int mv3310_aneg_done(struct phy_device *phydev)
 {
 	int val;

 	val = phy_read_mmd(phydev, MDIO_MMD_PCS, MV_PCS_BASE_R + MDIO_STAT1);
 	if (val < 0)
 		return val;

 	if (val & MDIO_STAT1_LSTATUS)
 		return 1;

 	return genphy_c45_aneg_done(phydev);
 }

 static void mv3310_update_interface(struct phy_device *phydev)
 {
 	if ((phydev->interface == PHY_INTERFACE_MODE_SGMII ||
 	     phydev->interface == PHY_INTERFACE_MODE_2500BASEX ||
 	     phydev->interface == PHY_INTERFACE_MODE_10GKR) && phydev->link) {
 		/* The PHY automatically switches its serdes interface (and
 		 * active PHYXS instance) between Cisco SGMII, 10GBase-KR and
 		 * 2500BaseX modes according to the speed.  Florian suggests
 		 * setting phydev->interface to communicate this to the MAC.
 		 * Only do this if we are already in one of the above modes.
 		 */
 		switch (phydev->speed) {
 		case SPEED_10000:
 			phydev->interface = PHY_INTERFACE_MODE_10GKR;
 			break;
 		case SPEED_2500:
 			phydev->interface = PHY_INTERFACE_MODE_2500BASEX;
 			break;
 		case SPEED_1000:
 		case SPEED_100:
 		case SPEED_10:
 			phydev->interface = PHY_INTERFACE_MODE_SGMII;
 			break;
 		default:
 			break;
 		}
 	}
 }

 /* 10GBASE-ER,LR,LRM,SR do not support autonegotiation. */
 static int mv3310_read_10gbr_status(struct phy_device *phydev)
 {
 	phydev->link = 1;
 	phydev->speed = SPEED_10000;
 	phydev->duplex = DUPLEX_FULL;

 	mv3310_update_interface(phydev);

 	return 0;
 }

 static int mv3310_read_status(struct phy_device *phydev)
 {
 	int val;

 	phydev->speed = SPEED_UNKNOWN;
 	phydev->duplex = DUPLEX_UNKNOWN;
 	linkmode_zero(phydev->lp_advertising);
 	phydev->link = 0;
 	phydev->pause = 0;
 	phydev->asym_pause = 0;
 	phydev->mdix = 0;

 	val = phy_read_mmd(phydev, MDIO_MMD_PCS, MV_PCS_BASE_R + MDIO_STAT1);
 	if (val < 0)
 		return val;

 	if (val & MDIO_STAT1_LSTATUS)
 		return mv3310_read_10gbr_status(phydev);

 	val = genphy_c45_read_link(phydev);
 	if (val < 0)
 		return val;

 	val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_STAT1);
 	if (val < 0)
 		return val;

 	if (val & MDIO_AN_STAT1_COMPLETE) {
 		val = genphy_c45_read_lpa(phydev);
 		if (val < 0)
 			return val;

 		/* Read the link partner's 1G advertisement */
 		val = phy_read_mmd(phydev, MDIO_MMD_AN, MV_AN_STAT1000);
 		if (val < 0)
 			return val;

 		mii_stat1000_mod_linkmode_lpa_t(phydev->lp_advertising, val);

 		if (phydev->autoneg == AUTONEG_ENABLE)
 			phy_resolve_aneg_linkmode(phydev);
 	}

 	if (phydev->autoneg != AUTONEG_ENABLE) {
 		val = genphy_c45_read_pma(phydev);
 		if (val < 0)
 			return val;
 	}

 	if (phydev->speed == SPEED_10000) {
 		val = genphy_c45_read_mdix(phydev);
 		if (val < 0)
 			return val;
 	} else {
 		val = phy_read_mmd(phydev, MDIO_MMD_PCS, MV_PCS_PAIRSWAP);
 		if (val < 0)
 			return val;

 		switch (val & MV_PCS_PAIRSWAP_MASK) {
 		case MV_PCS_PAIRSWAP_AB:
 			phydev->mdix = ETH_TP_MDI_X;
 			break;
 		case MV_PCS_PAIRSWAP_NONE:
 			phydev->mdix = ETH_TP_MDI;
 			break;
 		default:
 			phydev->mdix = ETH_TP_MDI_INVALID;
 			break;
 		}
 	}

 	mv3310_update_interface(phydev);

 	return 0;
 }

 static struct phy_driver mv3310_drivers[] = {
 	{
 		.phy_id		= MARVELL_PHY_ID_88X3310,
 		.phy_id_mask	= MARVELL_PHY_ID_MASK,
 		.name		= "mv88x3310",
 		.get_features	= mv3310_get_features,
 		.soft_reset	= genphy_no_soft_reset,
 		.config_init	= mv3310_config_init,
 		.probe		= mv3310_probe,
 		.suspend	= mv3310_suspend,
 		.resume		= mv3310_resume,
 		.config_aneg	= mv3310_config_aneg,
 		.aneg_done	= mv3310_aneg_done,
 		.read_status	= mv3310_read_status,
 	},
 	{
 		.phy_id		= MARVELL_PHY_ID_88E2110,
 		.phy_id_mask	= MARVELL_PHY_ID_MASK,
 		.name		= "mv88x2110",
 		.probe		= mv3310_probe,
 		.suspend	= mv3310_suspend,
 		.resume		= mv3310_resume,
 		.soft_reset	= genphy_no_soft_reset,
 		.config_init	= mv3310_config_init,
 		.config_aneg	= mv3310_config_aneg,
 		.aneg_done	= mv3310_aneg_done,
 		.read_status	= mv3310_read_status,
 	},
 };

 module_phy_driver(mv3310_drivers);

 static struct mdio_device_id __maybe_unused mv3310_tbl[] = {
 	{ MARVELL_PHY_ID_88X3310, MARVELL_PHY_ID_MASK },
 	{ MARVELL_PHY_ID_88E2110, MARVELL_PHY_ID_MASK },
 	{ },
 };
 MODULE_DEVICE_TABLE(mdio, mv3310_tbl);
 MODULE_DESCRIPTION("Marvell Alaska X 10Gigabit Ethernet PHY driver (MV88X3310)");
 MODULE_LICENSE("GPL");
	// SPDX-License-Identifier: GPL-2.0+
	/*
	* Marvell 10G 88x3310 PHY driver
	*
	* Based upon the ID registers, this PHY appears to be a mixture of IPs
	* from two different companies.
	*
	* There appears to be several different data paths through the PHY which
	* are automatically managed by the PHY. The following has been determined
	* via observation and experimentation for a setup using single-lane Serdes:
	*
	* SGMII PHYXS -- BASE-T PCS -- 10G PMA -- AN -- Copper (for <= 1G)
	* 10GBASE-KR PHYXS -- BASE-T PCS -- 10G PMA -- AN -- Copper (for 10G)
	* 10GBASE-KR PHYXS -- BASE-R PCS -- Fiber
	*
	* With XAUI, observation shows:
	*
	* XAUI PHYXS -- <appropriate PCS as above>
	*
	* and no switching of the host interface mode occurs.
	*
	* If both the fiber and copper ports are connected, the first to gain
	* link takes priority and the other port is completely locked out.
	*/
	#include <linux/ctype.h>
	#include <linux/hwmon.h>
	#include <linux/marvell_phy.h>
	#include <linux/phy.h>

	#define MV_PHY_ALASKA_NBT_QUIRK_MASK 0xfffffffe
	#define MV_PHY_ALASKA_NBT_QUIRK_REV (MARVELL_PHY_ID_88X3310 \| 0xa)

	enum {
	MV_PMA_BOOT = 0xc050,
	MV_PMA_BOOT_FATAL = BIT(0),

	MV_PCS_BASE_T = 0x0000,
	MV_PCS_BASE_R = 0x1000,
	MV_PCS_1000BASEX = 0x2000,

	MV_PCS_PAIRSWAP = 0x8182,
	MV_PCS_PAIRSWAP_MASK = 0x0003,
	MV_PCS_PAIRSWAP_AB = 0x0002,
	MV_PCS_PAIRSWAP_NONE = 0x0003,

	/* These registers appear at 0x800X and 0xa00X - the 0xa00X control
	* registers appear to set themselves to the 0x800X when AN is
	* restarted, but status registers appear readable from either.
	*/
	MV_AN_CTRL1000 = 0x8000, /* 1000base-T control register */
	MV_AN_STAT1000 = 0x8001, /* 1000base-T status register */

	/* Vendor2 MMD registers */
	MV_V2_PORT_CTRL = 0xf001,
	MV_V2_PORT_CTRL_PWRDOWN = 0x0800,
	MV_V2_TEMP_CTRL = 0xf08a,
	MV_V2_TEMP_CTRL_MASK = 0xc000,
	MV_V2_TEMP_CTRL_SAMPLE = 0x0000,
	MV_V2_TEMP_CTRL_DISABLE = 0xc000,
	MV_V2_TEMP = 0xf08c,
	MV_V2_TEMP_UNKNOWN = 0x9600, /* unknown function */
	};

	struct mv3310_priv {
	struct device *hwmon_dev;
	char *hwmon_name;
	};

	#ifdef CONFIG_HWMON
	static umode_t mv3310_hwmon_is_visible(const void *data,
	enum hwmon_sensor_types type,
	u32 attr, int channel)
	{
	if (type == hwmon_chip && attr == hwmon_chip_update_interval)
	return 0444;
	if (type == hwmon_temp && attr == hwmon_temp_input)
	return 0444;
	return 0;
	}

	static int mv3310_hwmon_read(struct device *dev, enum hwmon_sensor_types type,
	u32 attr, int channel, long *value)
	{
	struct phy_device *phydev = dev_get_drvdata(dev);
	int temp;

	if (type == hwmon_chip && attr == hwmon_chip_update_interval) {
	*value = MSEC_PER_SEC;
	return 0;
	}

	if (type == hwmon_temp && attr == hwmon_temp_input) {
	temp = phy_read_mmd(phydev, MDIO_MMD_VEND2, MV_V2_TEMP);
	if (temp < 0)
	return temp;

	value = ((temp & 0xff) - 75) 1000;

	return 0;
	}

	return -EOPNOTSUPP;
	}

	static const struct hwmon_ops mv3310_hwmon_ops = {
	.is_visible = mv3310_hwmon_is_visible,
	.read = mv3310_hwmon_read,
	};

	static u32 mv3310_hwmon_chip_config[] = {
	HWMON_C_REGISTER_TZ \| HWMON_C_UPDATE_INTERVAL,
	0,
	};

	static const struct hwmon_channel_info mv3310_hwmon_chip = {
	.type = hwmon_chip,
	.config = mv3310_hwmon_chip_config,
	};

	static u32 mv3310_hwmon_temp_config[] = {
	HWMON_T_INPUT,
	0,
	};

	static const struct hwmon_channel_info mv3310_hwmon_temp = {
	.type = hwmon_temp,
	.config = mv3310_hwmon_temp_config,
	};

	static const struct hwmon_channel_info *mv3310_hwmon_info[] = {
	&mv3310_hwmon_chip,
	&mv3310_hwmon_temp,
	NULL,
	};

	static const struct hwmon_chip_info mv3310_hwmon_chip_info = {
	.ops = &mv3310_hwmon_ops,
	.info = mv3310_hwmon_info,
	};

	static int mv3310_hwmon_config(struct phy_device *phydev, bool enable)
	{
	u16 val;
	int ret;

	ret = phy_write_mmd(phydev, MDIO_MMD_VEND2, MV_V2_TEMP,
	MV_V2_TEMP_UNKNOWN);
	if (ret < 0)
	return ret;

	val = enable ? MV_V2_TEMP_CTRL_SAMPLE : MV_V2_TEMP_CTRL_DISABLE;

	return phy_modify_mmd(phydev, MDIO_MMD_VEND2, MV_V2_TEMP_CTRL,
	MV_V2_TEMP_CTRL_MASK, val);
	}

	static void mv3310_hwmon_disable(void *data)
	{
	struct phy_device *phydev = data;

	mv3310_hwmon_config(phydev, false);
	}

	static int mv3310_hwmon_probe(struct phy_device *phydev)
	{
	struct device *dev = &phydev->mdio.dev;
	struct mv3310_priv *priv = dev_get_drvdata(&phydev->mdio.dev);
	int i, j, ret;

	priv->hwmon_name = devm_kstrdup(dev, dev_name(dev), GFP_KERNEL);
	if (!priv->hwmon_name)
	return -ENODEV;

	for (i = j = 0; priv->hwmon_name[i]; i++) {
	if (isalnum(priv->hwmon_name[i])) {
	if (i != j)
	priv->hwmon_name[j] = priv->hwmon_name[i];
	j++;
	}
	}
	priv->hwmon_name[j] = '\0';

	ret = mv3310_hwmon_config(phydev, true);
	if (ret)
	return ret;

	ret = devm_add_action_or_reset(dev, mv3310_hwmon_disable, phydev);
	if (ret)
	return ret;

	priv->hwmon_dev = devm_hwmon_device_register_with_info(dev,
	priv->hwmon_name, phydev,
	&mv3310_hwmon_chip_info, NULL);

	return PTR_ERR_OR_ZERO(priv->hwmon_dev);
	}
	#else
	static inline int mv3310_hwmon_config(struct phy_device *phydev, bool enable)
	{
	return 0;
	}

	static int mv3310_hwmon_probe(struct phy_device *phydev)
	{
	return 0;
	}
	#endif

	static int mv3310_probe(struct phy_device *phydev)
	{
	struct mv3310_priv *priv;
	u32 mmd_mask = MDIO_DEVS_PMAPMD \| MDIO_DEVS_AN;
	int ret;

	if (!phydev->is_c45 \|\|
	(phydev->c45_ids.devices_in_package & mmd_mask) != mmd_mask)
	return -ENODEV;

	ret = phy_read_mmd(phydev, MDIO_MMD_PMAPMD, MV_PMA_BOOT);
	if (ret < 0)
	return ret;

	if (ret & MV_PMA_BOOT_FATAL) {
	dev_warn(&phydev->mdio.dev,
	"PHY failed to boot firmware, status=%04x\n", ret);
	return -ENODEV;
	}

	priv = devm_kzalloc(&phydev->mdio.dev, sizeof(*priv), GFP_KERNEL);
	if (!priv)
	return -ENOMEM;

	dev_set_drvdata(&phydev->mdio.dev, priv);

	ret = mv3310_hwmon_probe(phydev);
	if (ret)
	return ret;

	return 0;
	}

	static int mv3310_suspend(struct phy_device *phydev)
	{
	return phy_set_bits_mmd(phydev, MDIO_MMD_VEND2, MV_V2_PORT_CTRL,
	MV_V2_PORT_CTRL_PWRDOWN);
	}

	static int mv3310_resume(struct phy_device *phydev)
	{
	int ret;

	ret = phy_clear_bits_mmd(phydev, MDIO_MMD_VEND2, MV_V2_PORT_CTRL,
	MV_V2_PORT_CTRL_PWRDOWN);
	if (ret)
	return ret;

	return mv3310_hwmon_config(phydev, true);
	}

	/* Some PHYs in the Alaska family such as the 88X3310 and the 88E2010
	* don't set bit 14 in PMA Extended Abilities (1.11), although they do
	* support 2.5GBASET and 5GBASET. For these models, we can still read their
	* 2.5G/5G extended abilities register (1.21). We detect these models based on
	* the PMA device identifier, with a mask matching models known to have this
	* issue
	*/
	static bool mv3310_has_pma_ngbaset_quirk(struct phy_device *phydev)
	{
	if (!(phydev->c45_ids.devices_in_package & MDIO_DEVS_PMAPMD))
	return false;

	/* Only some revisions of the 88X3310 family PMA seem to be impacted */
	return (phydev->c45_ids.device_ids[MDIO_MMD_PMAPMD] &
	MV_PHY_ALASKA_NBT_QUIRK_MASK) == MV_PHY_ALASKA_NBT_QUIRK_REV;
	}

	static int mv3310_config_init(struct phy_device *phydev)
	{
	/* Check that the PHY interface type is compatible */
	if (phydev->interface != PHY_INTERFACE_MODE_SGMII &&
	phydev->interface != PHY_INTERFACE_MODE_2500BASEX &&
	phydev->interface != PHY_INTERFACE_MODE_XAUI &&
	phydev->interface != PHY_INTERFACE_MODE_RXAUI &&
	phydev->interface != PHY_INTERFACE_MODE_10GKR)
	return -ENODEV;

	return 0;
	}

	static int mv3310_get_features(struct phy_device *phydev)
	{
	int ret, val;

	ret = genphy_c45_pma_read_abilities(phydev);
	if (ret)
	return ret;

	if (mv3310_has_pma_ngbaset_quirk(phydev)) {
	val = phy_read_mmd(phydev, MDIO_MMD_PMAPMD,
	MDIO_PMA_NG_EXTABLE);
	if (val < 0)
	return val;

	linkmode_mod_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT,
	phydev->supported,
	val & MDIO_PMA_NG_EXTABLE_2_5GBT);

	linkmode_mod_bit(ETHTOOL_LINK_MODE_5000baseT_Full_BIT,
	phydev->supported,
	val & MDIO_PMA_NG_EXTABLE_5GBT);
	}

	return 0;
	}

	static int mv3310_config_aneg(struct phy_device *phydev)
	{
	bool changed = false;
	u16 reg;
	int ret;

	/* We don't support manual MDI control */
	phydev->mdix_ctrl = ETH_TP_MDI_AUTO;

	if (phydev->autoneg == AUTONEG_DISABLE)
	return genphy_c45_pma_setup_forced(phydev);

	ret = genphy_c45_an_config_aneg(phydev);
	if (ret < 0)
	return ret;
	if (ret > 0)
	changed = true;

	/* Clause 45 has no standardized support for 1000BaseT, therefore
	* use vendor registers for this mode.
	*/
	reg = linkmode_adv_to_mii_ctrl1000_t(phydev->advertising);
	ret = phy_modify_mmd_changed(phydev, MDIO_MMD_AN, MV_AN_CTRL1000,
	ADVERTISE_1000FULL \| ADVERTISE_1000HALF, reg);
	if (ret < 0)
	return ret;
	if (ret > 0)
	changed = true;

	return genphy_c45_check_and_restart_aneg(phydev, changed);
	}

	static int mv3310_aneg_done(struct phy_device *phydev)
	{
	int val;

	val = phy_read_mmd(phydev, MDIO_MMD_PCS, MV_PCS_BASE_R + MDIO_STAT1);
	if (val < 0)
	return val;

	if (val & MDIO_STAT1_LSTATUS)
	return 1;

	return genphy_c45_aneg_done(phydev);
	}

	static void mv3310_update_interface(struct phy_device *phydev)
	{
	if ((phydev->interface == PHY_INTERFACE_MODE_SGMII \|\|
	phydev->interface == PHY_INTERFACE_MODE_2500BASEX \|\|
	phydev->interface == PHY_INTERFACE_MODE_10GKR) && phydev->link) {
	/* The PHY automatically switches its serdes interface (and
	* active PHYXS instance) between Cisco SGMII, 10GBase-KR and
	* 2500BaseX modes according to the speed. Florian suggests
	* setting phydev->interface to communicate this to the MAC.
	* Only do this if we are already in one of the above modes.
	*/
	switch (phydev->speed) {
	case SPEED_10000:
	phydev->interface = PHY_INTERFACE_MODE_10GKR;
	break;
	case SPEED_2500:
	phydev->interface = PHY_INTERFACE_MODE_2500BASEX;
	break;
	case SPEED_1000:
	case SPEED_100:
	case SPEED_10:
	phydev->interface = PHY_INTERFACE_MODE_SGMII;
	break;
	default:
	break;
	}
	}
	}

	/* 10GBASE-ER,LR,LRM,SR do not support autonegotiation. */
	static int mv3310_read_10gbr_status(struct phy_device *phydev)
	{
	phydev->link = 1;
	phydev->speed = SPEED_10000;
	phydev->duplex = DUPLEX_FULL;

	mv3310_update_interface(phydev);

	return 0;
	}

	static int mv3310_read_status(struct phy_device *phydev)
	{
	int val;

	phydev->speed = SPEED_UNKNOWN;
	phydev->duplex = DUPLEX_UNKNOWN;
	linkmode_zero(phydev->lp_advertising);
	phydev->link = 0;
	phydev->pause = 0;
	phydev->asym_pause = 0;
	phydev->mdix = 0;

	val = phy_read_mmd(phydev, MDIO_MMD_PCS, MV_PCS_BASE_R + MDIO_STAT1);
	if (val < 0)
	return val;

	if (val & MDIO_STAT1_LSTATUS)
	return mv3310_read_10gbr_status(phydev);

	val = genphy_c45_read_link(phydev);
	if (val < 0)
	return val;

	val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_STAT1);
	if (val < 0)
	return val;

	if (val & MDIO_AN_STAT1_COMPLETE) {
	val = genphy_c45_read_lpa(phydev);
	if (val < 0)
	return val;

	/* Read the link partner's 1G advertisement */
	val = phy_read_mmd(phydev, MDIO_MMD_AN, MV_AN_STAT1000);
	if (val < 0)
	return val;

	mii_stat1000_mod_linkmode_lpa_t(phydev->lp_advertising, val);

	if (phydev->autoneg == AUTONEG_ENABLE)
	phy_resolve_aneg_linkmode(phydev);
	}

	if (phydev->autoneg != AUTONEG_ENABLE) {
	val = genphy_c45_read_pma(phydev);
	if (val < 0)
	return val;
	}

	if (phydev->speed == SPEED_10000) {
	val = genphy_c45_read_mdix(phydev);
	if (val < 0)
	return val;
	} else {
	val = phy_read_mmd(phydev, MDIO_MMD_PCS, MV_PCS_PAIRSWAP);
	if (val < 0)
	return val;

	switch (val & MV_PCS_PAIRSWAP_MASK) {
	case MV_PCS_PAIRSWAP_AB:
	phydev->mdix = ETH_TP_MDI_X;
	break;
	case MV_PCS_PAIRSWAP_NONE:
	phydev->mdix = ETH_TP_MDI;
	break;
	default:
	phydev->mdix = ETH_TP_MDI_INVALID;
	break;
	}
	}

	mv3310_update_interface(phydev);

	return 0;
	}

	static struct phy_driver mv3310_drivers[] = {
	{
	.phy_id = MARVELL_PHY_ID_88X3310,
	.phy_id_mask = MARVELL_PHY_ID_MASK,
	.name = "mv88x3310",
	.get_features = mv3310_get_features,
	.soft_reset = genphy_no_soft_reset,
	.config_init = mv3310_config_init,
	.probe = mv3310_probe,
	.suspend = mv3310_suspend,
	.resume = mv3310_resume,
	.config_aneg = mv3310_config_aneg,
	.aneg_done = mv3310_aneg_done,
	.read_status = mv3310_read_status,
	},
	{
	.phy_id = MARVELL_PHY_ID_88E2110,
	.phy_id_mask = MARVELL_PHY_ID_MASK,
	.name = "mv88x2110",
	.probe = mv3310_probe,
	.suspend = mv3310_suspend,
	.resume = mv3310_resume,
	.soft_reset = genphy_no_soft_reset,
	.config_init = mv3310_config_init,
	.config_aneg = mv3310_config_aneg,
	.aneg_done = mv3310_aneg_done,
	.read_status = mv3310_read_status,
	},
	};

	module_phy_driver(mv3310_drivers);

	static struct mdio_device_id __maybe_unused mv3310_tbl[] = {
	{ MARVELL_PHY_ID_88X3310, MARVELL_PHY_ID_MASK },
	{ MARVELL_PHY_ID_88E2110, MARVELL_PHY_ID_MASK },
	{ },
	};
	MODULE_DEVICE_TABLE(mdio, mv3310_tbl);
	MODULE_DESCRIPTION("Marvell Alaska X 10Gigabit Ethernet PHY driver (MV88X3310)");
	MODULE_LICENSE("GPL");