+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Copyright (c) 2020 Sartura Ltd.
- *
- * Author: Robert Marko <robert.marko@sartura.hr>
- *
- * Qualcomm QCA8072 and QCA8075 PHY driver
- */
-
-#include <linux/version.h>
-#include <linux/module.h>
-#include <linux/of.h>
-#include <linux/phy.h>
-#include <linux/bitfield.h>
-#include <linux/ethtool_netlink.h>
-#include <linux/gpio.h>
-#include <linux/sfp.h>
-
-#include <dt-bindings/net/qcom-qca807x.h>
-
-#define PHY_ID_QCA8072 0x004dd0b2
-#define PHY_ID_QCA8075 0x004dd0b1
-#define PHY_ID_QCA807X_PSGMII 0x06820805
-
-/* Downshift */
-#define QCA807X_SMARTSPEED_EN BIT(5)
-#define QCA807X_SMARTSPEED_RETRY_LIMIT_MASK GENMASK(4, 2)
-#define QCA807X_SMARTSPEED_RETRY_LIMIT_DEFAULT 5
-#define QCA807X_SMARTSPEED_RETRY_LIMIT_MIN 2
-#define QCA807X_SMARTSPEED_RETRY_LIMIT_MAX 9
-
-/* Cable diagnostic test (CDT) */
-#define QCA807X_CDT 0x16
-#define QCA807X_CDT_ENABLE BIT(15)
-#define QCA807X_CDT_ENABLE_INTER_PAIR_SHORT BIT(13)
-#define QCA807X_CDT_STATUS BIT(11)
-#define QCA807X_CDT_MMD3_STATUS 0x8064
-#define QCA807X_CDT_MDI0_STATUS_MASK GENMASK(15, 12)
-#define QCA807X_CDT_MDI1_STATUS_MASK GENMASK(11, 8)
-#define QCA807X_CDT_MDI2_STATUS_MASK GENMASK(7, 4)
-#define QCA807X_CDT_MDI3_STATUS_MASK GENMASK(3, 0)
-#define QCA807X_CDT_RESULTS_INVALID 0x0
-#define QCA807X_CDT_RESULTS_OK 0x1
-#define QCA807X_CDT_RESULTS_OPEN 0x2
-#define QCA807X_CDT_RESULTS_SAME_SHORT 0x3
-#define QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI1_SAME_OK 0x4
-#define QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI2_SAME_OK 0x8
-#define QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI3_SAME_OK 0xc
-#define QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI1_SAME_OPEN 0x6
-#define QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI2_SAME_OPEN 0xa
-#define QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI3_SAME_OPEN 0xe
-#define QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI1_SAME_SHORT 0x7
-#define QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI2_SAME_SHORT 0xb
-#define QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI3_SAME_SHORT 0xf
-#define QCA807X_CDT_RESULTS_BUSY 0x9
-#define QCA807X_CDT_MMD3_MDI0_LENGTH 0x8065
-#define QCA807X_CDT_MMD3_MDI1_LENGTH 0x8066
-#define QCA807X_CDT_MMD3_MDI2_LENGTH 0x8067
-#define QCA807X_CDT_MMD3_MDI3_LENGTH 0x8068
-#define QCA807X_CDT_SAME_SHORT_LENGTH_MASK GENMASK(15, 8)
-#define QCA807X_CDT_CROSS_SHORT_LENGTH_MASK GENMASK(7, 0)
-
-#define QCA807X_CHIP_CONFIGURATION 0x1f
-#define QCA807X_BT_BX_REG_SEL BIT(15)
-#define QCA807X_BT_BX_REG_SEL_FIBER 0
-#define QCA807X_BT_BX_REG_SEL_COPPER 1
-#define QCA807X_CHIP_CONFIGURATION_MODE_CFG_MASK GENMASK(3, 0)
-#define QCA807X_CHIP_CONFIGURATION_MODE_QSGMII_SGMII 4
-#define QCA807X_CHIP_CONFIGURATION_MODE_PSGMII_FIBER 3
-#define QCA807X_CHIP_CONFIGURATION_MODE_PSGMII_ALL_COPPER 0
-
-#define QCA807X_MEDIA_SELECT_STATUS 0x1a
-#define QCA807X_MEDIA_DETECTED_COPPER BIT(5)
-#define QCA807X_MEDIA_DETECTED_1000_BASE_X BIT(4)
-#define QCA807X_MEDIA_DETECTED_100_BASE_FX BIT(3)
-
-#define QCA807X_MMD7_FIBER_MODE_AUTO_DETECTION 0x807e
-#define QCA807X_MMD7_FIBER_MODE_AUTO_DETECTION_EN BIT(0)
-
-#define QCA807X_MMD7_1000BASE_T_POWER_SAVE_PER_CABLE_LENGTH 0x801a
-#define QCA807X_CONTROL_DAC_MASK GENMASK(2, 0)
-
-#define QCA807X_MMD7_LED_100N_1 0x8074
-#define QCA807X_MMD7_LED_100N_2 0x8075
-#define QCA807X_MMD7_LED_1000N_1 0x8076
-#define QCA807X_MMD7_LED_1000N_2 0x8077
-#define QCA807X_LED_TXACT_BLK_EN_2 BIT(10)
-#define QCA807X_LED_RXACT_BLK_EN_2 BIT(9)
-#define QCA807X_LED_GT_ON_EN_2 BIT(6)
-#define QCA807X_LED_HT_ON_EN_2 BIT(5)
-#define QCA807X_LED_BT_ON_EN_2 BIT(4)
-#define QCA807X_GPIO_FORCE_EN BIT(15)
-#define QCA807X_GPIO_FORCE_MODE_MASK GENMASK(14, 13)
-
-#define QCA807X_INTR_ENABLE 0x12
-#define QCA807X_INTR_STATUS 0x13
-#define QCA807X_INTR_ENABLE_AUTONEG_ERR BIT(15)
-#define QCA807X_INTR_ENABLE_SPEED_CHANGED BIT(14)
-#define QCA807X_INTR_ENABLE_DUPLEX_CHANGED BIT(13)
-#define QCA807X_INTR_ENABLE_LINK_FAIL BIT(11)
-#define QCA807X_INTR_ENABLE_LINK_SUCCESS BIT(10)
-
-#define QCA807X_FUNCTION_CONTROL 0x10
-#define QCA807X_FC_MDI_CROSSOVER_MODE_MASK GENMASK(6, 5)
-#define QCA807X_FC_MDI_CROSSOVER_AUTO 3
-#define QCA807X_FC_MDI_CROSSOVER_MANUAL_MDIX 1
-#define QCA807X_FC_MDI_CROSSOVER_MANUAL_MDI 0
-
-#define QCA807X_PHY_SPECIFIC_STATUS 0x11
-#define QCA807X_SS_SPEED_AND_DUPLEX_RESOLVED BIT(11)
-#define QCA807X_SS_SPEED_MASK GENMASK(15, 14)
-#define QCA807X_SS_SPEED_1000 2
-#define QCA807X_SS_SPEED_100 1
-#define QCA807X_SS_SPEED_10 0
-#define QCA807X_SS_DUPLEX BIT(13)
-#define QCA807X_SS_MDIX BIT(6)
-
-/* PSGMII PHY specific */
-#define PSGMII_QSGMII_DRIVE_CONTROL_1 0xb
-#define PSGMII_QSGMII_TX_DRIVER_MASK GENMASK(7, 4)
-#define PSGMII_MODE_CTRL 0x6d
-#define PSGMII_MODE_CTRL_AZ_WORKAROUND_MASK BIT(0)
-#define PSGMII_MMD3_SERDES_CONTROL 0x805a
-
-struct qca807x_gpio_priv {
- struct phy_device *phy;
-};
-
-static int qca807x_get_downshift(struct phy_device *phydev, u8 *data)
-{
- int val, cnt, enable;
-
- val = phy_read(phydev, MII_NWAYTEST);
- if (val < 0)
- return val;
-
- enable = FIELD_GET(QCA807X_SMARTSPEED_EN, val);
- cnt = FIELD_GET(QCA807X_SMARTSPEED_RETRY_LIMIT_MASK, val) + 2;
-
- *data = enable ? cnt : DOWNSHIFT_DEV_DISABLE;
-
- return 0;
-}
-
-static int qca807x_set_downshift(struct phy_device *phydev, u8 cnt)
-{
- int ret, val;
-
- if (cnt > QCA807X_SMARTSPEED_RETRY_LIMIT_MAX ||
- (cnt < QCA807X_SMARTSPEED_RETRY_LIMIT_MIN && cnt != DOWNSHIFT_DEV_DISABLE))
- return -EINVAL;
-
- if (!cnt) {
- ret = phy_clear_bits(phydev, MII_NWAYTEST, QCA807X_SMARTSPEED_EN);
- } else {
- val = QCA807X_SMARTSPEED_EN;
- val |= FIELD_PREP(QCA807X_SMARTSPEED_RETRY_LIMIT_MASK, cnt - 2);
-
- phy_modify(phydev, MII_NWAYTEST,
- QCA807X_SMARTSPEED_EN |
- QCA807X_SMARTSPEED_RETRY_LIMIT_MASK,
- val);
- }
-
- ret = genphy_soft_reset(phydev);
-
- return ret;
-}
-
-static int qca807x_get_tunable(struct phy_device *phydev,
- struct ethtool_tunable *tuna, void *data)
-{
- switch (tuna->id) {
- case ETHTOOL_PHY_DOWNSHIFT:
- return qca807x_get_downshift(phydev, data);
- default:
- return -EOPNOTSUPP;
- }
-}
-
-static int qca807x_set_tunable(struct phy_device *phydev,
- struct ethtool_tunable *tuna, const void *data)
-{
- switch (tuna->id) {
- case ETHTOOL_PHY_DOWNSHIFT:
- return qca807x_set_downshift(phydev, *(const u8 *)data);
- default:
- return -EOPNOTSUPP;
- }
-}
-
-static bool qca807x_distance_valid(int result)
-{
- switch (result) {
- case QCA807X_CDT_RESULTS_OPEN:
- case QCA807X_CDT_RESULTS_SAME_SHORT:
- case QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI1_SAME_OK:
- case QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI2_SAME_OK:
- case QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI3_SAME_OK:
- case QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI1_SAME_OPEN:
- case QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI2_SAME_OPEN:
- case QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI3_SAME_OPEN:
- case QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI1_SAME_SHORT:
- case QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI2_SAME_SHORT:
- case QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI3_SAME_SHORT:
- return true;
- }
- return false;
-}
-
-static int qca807x_report_length(struct phy_device *phydev,
- int pair, int result)
-{
- int length;
- int ret;
-
- ret = phy_read_mmd(phydev, MDIO_MMD_PCS, QCA807X_CDT_MMD3_MDI0_LENGTH + pair);
- if (ret < 0)
- return ret;
-
- switch (result) {
- case ETHTOOL_A_CABLE_RESULT_CODE_SAME_SHORT:
- length = (FIELD_GET(QCA807X_CDT_SAME_SHORT_LENGTH_MASK, ret) * 800) / 10;
- break;
- case ETHTOOL_A_CABLE_RESULT_CODE_OPEN:
- case ETHTOOL_A_CABLE_RESULT_CODE_CROSS_SHORT:
- length = (FIELD_GET(QCA807X_CDT_CROSS_SHORT_LENGTH_MASK, ret) * 800) / 10;
- break;
- }
-
- ethnl_cable_test_fault_length(phydev, pair, length);
-
- return 0;
-}
-
-static int qca807x_cable_test_report_trans(int result)
-{
- switch (result) {
- case QCA807X_CDT_RESULTS_OK:
- return ETHTOOL_A_CABLE_RESULT_CODE_OK;
- case QCA807X_CDT_RESULTS_OPEN:
- return ETHTOOL_A_CABLE_RESULT_CODE_OPEN;
- case QCA807X_CDT_RESULTS_SAME_SHORT:
- return ETHTOOL_A_CABLE_RESULT_CODE_SAME_SHORT;
- case QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI1_SAME_OK:
- case QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI2_SAME_OK:
- case QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI3_SAME_OK:
- case QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI1_SAME_OPEN:
- case QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI2_SAME_OPEN:
- case QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI3_SAME_OPEN:
- case QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI1_SAME_SHORT:
- case QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI2_SAME_SHORT:
- case QCA807X_CDT_RESULTS_CROSS_SHORT_WITH_MDI3_SAME_SHORT:
- return ETHTOOL_A_CABLE_RESULT_CODE_CROSS_SHORT;
- default:
- return ETHTOOL_A_CABLE_RESULT_CODE_UNSPEC;
- }
-}
-
-static int qca807x_cable_test_report(struct phy_device *phydev)
-{
- int pair0, pair1, pair2, pair3;
- int ret;
-
- ret = phy_read_mmd(phydev, MDIO_MMD_PCS, QCA807X_CDT_MMD3_STATUS);
- if (ret < 0)
- return ret;
-
- pair0 = FIELD_GET(QCA807X_CDT_MDI0_STATUS_MASK, ret);
- pair1 = FIELD_GET(QCA807X_CDT_MDI1_STATUS_MASK, ret);
- pair2 = FIELD_GET(QCA807X_CDT_MDI2_STATUS_MASK, ret);
- pair3 = FIELD_GET(QCA807X_CDT_MDI3_STATUS_MASK, ret);
-
- ethnl_cable_test_result(phydev, ETHTOOL_A_CABLE_PAIR_A,
- qca807x_cable_test_report_trans(pair0));
- ethnl_cable_test_result(phydev, ETHTOOL_A_CABLE_PAIR_B,
- qca807x_cable_test_report_trans(pair1));
- ethnl_cable_test_result(phydev, ETHTOOL_A_CABLE_PAIR_C,
- qca807x_cable_test_report_trans(pair2));
- ethnl_cable_test_result(phydev, ETHTOOL_A_CABLE_PAIR_D,
- qca807x_cable_test_report_trans(pair3));
-
- if (qca807x_distance_valid(pair0))
- qca807x_report_length(phydev, 0, qca807x_cable_test_report_trans(pair0));
- if (qca807x_distance_valid(pair1))
- qca807x_report_length(phydev, 1, qca807x_cable_test_report_trans(pair1));
- if (qca807x_distance_valid(pair2))
- qca807x_report_length(phydev, 2, qca807x_cable_test_report_trans(pair2));
- if (qca807x_distance_valid(pair3))
- qca807x_report_length(phydev, 3, qca807x_cable_test_report_trans(pair3));
-
- return 0;
-}
-
-static int qca807x_cable_test_get_status(struct phy_device *phydev,
- bool *finished)
-{
- int val;
-
- *finished = false;
-
- val = phy_read(phydev, QCA807X_CDT);
- if (!((val & QCA807X_CDT_ENABLE) && (val & QCA807X_CDT_STATUS))) {
- *finished = true;
-
- return qca807x_cable_test_report(phydev);
- }
-
- return 0;
-}
-
-static int qca807x_cable_test_start(struct phy_device *phydev)
-{
- int val, ret;
-
- val = phy_read(phydev, QCA807X_CDT);
- /* Enable inter-pair short check as well */
- val &= ~QCA807X_CDT_ENABLE_INTER_PAIR_SHORT;
- val |= QCA807X_CDT_ENABLE;
- ret = phy_write(phydev, QCA807X_CDT, val);
-
- return ret;
-}
-
-#ifdef CONFIG_GPIOLIB
-static int qca807x_gpio_get_direction(struct gpio_chip *gc, unsigned int offset)
-{
- return GPIO_LINE_DIRECTION_OUT;
-}
-
-static int qca807x_gpio_get_reg(unsigned int offset)
-{
- return QCA807X_MMD7_LED_100N_2 + (offset % 2) * 2;
-}
-
-static int qca807x_gpio_get(struct gpio_chip *gc, unsigned int offset)
-{
- struct qca807x_gpio_priv *priv = gpiochip_get_data(gc);
- int val;
-
- val = phy_read_mmd(priv->phy, MDIO_MMD_AN, qca807x_gpio_get_reg(offset));
-
- return FIELD_GET(QCA807X_GPIO_FORCE_MODE_MASK, val);
-}
-
-static void qca807x_gpio_set(struct gpio_chip *gc, unsigned int offset, int value)
-{
- struct qca807x_gpio_priv *priv = gpiochip_get_data(gc);
- int val;
-
- val = phy_read_mmd(priv->phy, MDIO_MMD_AN, qca807x_gpio_get_reg(offset));
- val &= ~QCA807X_GPIO_FORCE_MODE_MASK;
- val |= QCA807X_GPIO_FORCE_EN;
- val |= FIELD_PREP(QCA807X_GPIO_FORCE_MODE_MASK, value);
-
- phy_write_mmd(priv->phy, MDIO_MMD_AN, qca807x_gpio_get_reg(offset), val);
-}
-
-static int qca807x_gpio_dir_out(struct gpio_chip *gc, unsigned int offset, int value)
-{
- qca807x_gpio_set(gc, offset, value);
-
- return 0;
-}
-
-static int qca807x_gpio(struct phy_device *phydev)
-{
- struct device *dev = &phydev->mdio.dev;
- struct qca807x_gpio_priv *priv;
- struct gpio_chip *gc;
-
- priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
- if (!priv)
- return -ENOMEM;
-
- priv->phy = phydev;
-
- gc = devm_kzalloc(dev, sizeof(*gc), GFP_KERNEL);
- if (!gc)
- return -ENOMEM;
-
- gc->label = dev_name(dev);
- gc->base = -1;
- gc->ngpio = 2;
- gc->parent = dev;
- gc->owner = THIS_MODULE;
- gc->can_sleep = true;
- gc->get_direction = qca807x_gpio_get_direction;
- gc->direction_output = qca807x_gpio_dir_out;
- gc->get = qca807x_gpio_get;
- gc->set = qca807x_gpio_set;
-
- return devm_gpiochip_add_data(dev, gc, priv);
-}
-#endif
-
-static int qca807x_read_copper_status(struct phy_device *phydev)
-{
- int ss, err, old_link = phydev->link;
-
- /* Update the link, but return if there was an error */
- err = genphy_update_link(phydev);
- if (err)
- return err;
-
- /* why bother the PHY if nothing can have changed */
- if (phydev->autoneg == AUTONEG_ENABLE && old_link && phydev->link)
- return 0;
-
- phydev->speed = SPEED_UNKNOWN;
- phydev->duplex = DUPLEX_UNKNOWN;
- phydev->pause = 0;
- phydev->asym_pause = 0;
-
- err = genphy_read_lpa(phydev);
- if (err < 0)
- return err;
-
- /* Read the QCA807x PHY-Specific Status register copper page,
- * which indicates the speed and duplex that the PHY is actually
- * using, irrespective of whether we are in autoneg mode or not.
- */
- ss = phy_read(phydev, QCA807X_PHY_SPECIFIC_STATUS);
- if (ss < 0)
- return ss;
-
- if (ss & QCA807X_SS_SPEED_AND_DUPLEX_RESOLVED) {
- int sfc;
-
- sfc = phy_read(phydev, QCA807X_FUNCTION_CONTROL);
- if (sfc < 0)
- return sfc;
-
- switch (FIELD_GET(QCA807X_SS_SPEED_MASK, ss)) {
- case QCA807X_SS_SPEED_10:
- phydev->speed = SPEED_10;
- break;
- case QCA807X_SS_SPEED_100:
- phydev->speed = SPEED_100;
- break;
- case QCA807X_SS_SPEED_1000:
- phydev->speed = SPEED_1000;
- break;
- }
- if (ss & QCA807X_SS_DUPLEX)
- phydev->duplex = DUPLEX_FULL;
- else
- phydev->duplex = DUPLEX_HALF;
-
- if (ss & QCA807X_SS_MDIX)
- phydev->mdix = ETH_TP_MDI_X;
- else
- phydev->mdix = ETH_TP_MDI;
-
- switch (FIELD_GET(QCA807X_FC_MDI_CROSSOVER_MODE_MASK, sfc)) {
- case QCA807X_FC_MDI_CROSSOVER_MANUAL_MDI:
- phydev->mdix_ctrl = ETH_TP_MDI;
- break;
- case QCA807X_FC_MDI_CROSSOVER_MANUAL_MDIX:
- phydev->mdix_ctrl = ETH_TP_MDI_X;
- break;
- case QCA807X_FC_MDI_CROSSOVER_AUTO:
- phydev->mdix_ctrl = ETH_TP_MDI_AUTO;
- break;
- }
- }
-
- if (phydev->autoneg == AUTONEG_ENABLE && phydev->autoneg_complete)
- phy_resolve_aneg_pause(phydev);
-
- return 0;
-}
-
-static int qca807x_read_fiber_status(struct phy_device *phydev)
-{
- int ss, err, lpa, old_link = phydev->link;
-
- /* Update the link, but return if there was an error */
- err = genphy_update_link(phydev);
- if (err)
- return err;
-
- /* why bother the PHY if nothing can have changed */
- if (phydev->autoneg == AUTONEG_ENABLE && old_link && phydev->link)
- return 0;
-
- phydev->speed = SPEED_UNKNOWN;
- phydev->duplex = DUPLEX_UNKNOWN;
- phydev->pause = 0;
- phydev->asym_pause = 0;
-
- if (phydev->autoneg == AUTONEG_ENABLE && phydev->autoneg_complete) {
- lpa = phy_read(phydev, MII_LPA);
- if (lpa < 0)
- return lpa;
-
- linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
- phydev->lp_advertising, lpa & LPA_LPACK);
- linkmode_mod_bit(ETHTOOL_LINK_MODE_1000baseX_Full_BIT,
- phydev->lp_advertising, lpa & LPA_1000XFULL);
- linkmode_mod_bit(ETHTOOL_LINK_MODE_Pause_BIT,
- phydev->lp_advertising, lpa & LPA_1000XPAUSE);
- linkmode_mod_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT,
- phydev->lp_advertising,
- lpa & LPA_1000XPAUSE_ASYM);
-
- phy_resolve_aneg_linkmode(phydev);
- }
-
- /* Read the QCA807x PHY-Specific Status register fiber page,
- * which indicates the speed and duplex that the PHY is actually
- * using, irrespective of whether we are in autoneg mode or not.
- */
- ss = phy_read(phydev, QCA807X_PHY_SPECIFIC_STATUS);
- if (ss < 0)
- return ss;
-
- if (ss & QCA807X_SS_SPEED_AND_DUPLEX_RESOLVED) {
- switch (FIELD_GET(QCA807X_SS_SPEED_MASK, ss)) {
- case QCA807X_SS_SPEED_100:
- phydev->speed = SPEED_100;
- break;
- case QCA807X_SS_SPEED_1000:
- phydev->speed = SPEED_1000;
- break;
- }
-
- if (ss & QCA807X_SS_DUPLEX)
- phydev->duplex = DUPLEX_FULL;
- else
- phydev->duplex = DUPLEX_HALF;
- }
-
- return 0;
-}
-
-static int qca807x_read_status(struct phy_device *phydev)
-{
- if (linkmode_test_bit(ETHTOOL_LINK_MODE_FIBRE_BIT, phydev->supported)) {
- switch (phydev->port) {
- case PORT_FIBRE:
- return qca807x_read_fiber_status(phydev);
- case PORT_TP:
- return qca807x_read_copper_status(phydev);
- default:
- return -EINVAL;
- }
- } else
- return qca807x_read_copper_status(phydev);
-}
-
-static int qca807x_config_intr(struct phy_device *phydev)
-{
- int ret, val;
-
- val = phy_read(phydev, QCA807X_INTR_ENABLE);
-
- if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
- /* Check for combo port as it has fewer interrupts */
- if (phy_read(phydev, QCA807X_CHIP_CONFIGURATION)) {
- val |= QCA807X_INTR_ENABLE_SPEED_CHANGED;
- val |= QCA807X_INTR_ENABLE_LINK_FAIL;
- val |= QCA807X_INTR_ENABLE_LINK_SUCCESS;
- } else {
- val |= QCA807X_INTR_ENABLE_AUTONEG_ERR;
- val |= QCA807X_INTR_ENABLE_SPEED_CHANGED;
- val |= QCA807X_INTR_ENABLE_DUPLEX_CHANGED;
- val |= QCA807X_INTR_ENABLE_LINK_FAIL;
- val |= QCA807X_INTR_ENABLE_LINK_SUCCESS;
- }
- ret = phy_write(phydev, QCA807X_INTR_ENABLE, val);
- } else {
- ret = phy_write(phydev, QCA807X_INTR_ENABLE, 0);
- }
-
- return ret;
-}
-
-static irqreturn_t qca807x_handle_interrupt(struct phy_device *phydev)
-{
- int irq_status, int_enabled;
-
- irq_status = phy_read(phydev, QCA807X_INTR_STATUS);
- if (irq_status < 0) {
- phy_error(phydev);
- return IRQ_NONE;
- }
-
- /* Read the current enabled interrupts */
- int_enabled = phy_read(phydev, QCA807X_INTR_ENABLE);
- if (int_enabled < 0) {
- phy_error(phydev);
- return IRQ_NONE;
- }
-
- /* See if this was one of our enabled interrupts */
- if (!(irq_status & int_enabled))
- return IRQ_NONE;
-
- phy_trigger_machine(phydev);
-
- return IRQ_HANDLED;
-}
-
-static int qca807x_led_config(struct phy_device *phydev)
-{
- struct device_node *node = phydev->mdio.dev.of_node;
- bool led_config = false;
- int val;
-
- val = phy_read_mmd(phydev, MDIO_MMD_AN, QCA807X_MMD7_LED_1000N_1);
- if (val < 0)
- return val;
-
- if (of_property_read_bool(node, "qcom,single-led-1000")) {
- val |= QCA807X_LED_TXACT_BLK_EN_2;
- val |= QCA807X_LED_RXACT_BLK_EN_2;
- val |= QCA807X_LED_GT_ON_EN_2;
-
- led_config = true;
- }
-
- if (of_property_read_bool(node, "qcom,single-led-100")) {
- val |= QCA807X_LED_HT_ON_EN_2;
-
- led_config = true;
- }
-
- if (of_property_read_bool(node, "qcom,single-led-10")) {
- val |= QCA807X_LED_BT_ON_EN_2;
-
- led_config = true;
- }
-
- if (led_config)
- return phy_write_mmd(phydev, MDIO_MMD_AN, QCA807X_MMD7_LED_1000N_1, val);
- else
- return 0;
-}
-
-static int qca807x_sfp_insert(void *upstream, const struct sfp_eeprom_id *id)
-{
- struct phy_device *phydev = upstream;
- __ETHTOOL_DECLARE_LINK_MODE_MASK(support) = { 0, };
- phy_interface_t iface;
- int ret;
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(6,1,0)
- DECLARE_PHY_INTERFACE_MASK(interfaces);
-
- sfp_parse_support(phydev->sfp_bus, id, support, interfaces);
-#else
- sfp_parse_support(phydev->sfp_bus, id, support);
-#endif
- iface = sfp_select_interface(phydev->sfp_bus, support);
-
- dev_info(&phydev->mdio.dev, "%s SFP module inserted\n", phy_modes(iface));
-
- switch (iface) {
- case PHY_INTERFACE_MODE_1000BASEX:
- case PHY_INTERFACE_MODE_100BASEX:
- /* Set PHY mode to PSGMII combo (1/4 copper + combo ports) mode */
- ret = phy_modify(phydev,
- QCA807X_CHIP_CONFIGURATION,
- QCA807X_CHIP_CONFIGURATION_MODE_CFG_MASK,
- QCA807X_CHIP_CONFIGURATION_MODE_PSGMII_FIBER);
- /* Enable fiber mode autodection (1000Base-X or 100Base-FX) */
- ret = phy_set_bits_mmd(phydev,
- MDIO_MMD_AN,
- QCA807X_MMD7_FIBER_MODE_AUTO_DETECTION,
- QCA807X_MMD7_FIBER_MODE_AUTO_DETECTION_EN);
- /* Select fiber page */
- ret = phy_clear_bits(phydev,
- QCA807X_CHIP_CONFIGURATION,
- QCA807X_BT_BX_REG_SEL);
-
- phydev->port = PORT_FIBRE;
- break;
- default:
- dev_err(&phydev->mdio.dev, "Incompatible SFP module inserted\n");
- return -EINVAL;
- }
-
- return ret;
-}
-
-static void qca807x_sfp_remove(void *upstream)
-{
- struct phy_device *phydev = upstream;
-
- /* Select copper page */
- phy_set_bits(phydev,
- QCA807X_CHIP_CONFIGURATION,
- QCA807X_BT_BX_REG_SEL);
-
- phydev->port = PORT_TP;
-}
-
-static const struct sfp_upstream_ops qca807x_sfp_ops = {
- .attach = phy_sfp_attach,
- .detach = phy_sfp_detach,
- .module_insert = qca807x_sfp_insert,
- .module_remove = qca807x_sfp_remove,
-};
-
-static int qca807x_config(struct phy_device *phydev)
-{
- struct device_node *node = phydev->mdio.dev.of_node;
- int control_dac, ret = 0;
- u32 of_control_dac;
-
- /* Check for Combo port */
- if (phy_read(phydev, QCA807X_CHIP_CONFIGURATION)) {
- int psgmii_serdes;
-
- /* Prevent PSGMII going into hibernation via PSGMII self test */
- psgmii_serdes = phy_read_mmd(phydev, MDIO_MMD_PCS, PSGMII_MMD3_SERDES_CONTROL);
- psgmii_serdes &= ~BIT(1);
- ret = phy_write_mmd(phydev, MDIO_MMD_PCS,
- PSGMII_MMD3_SERDES_CONTROL,
- psgmii_serdes);
- }
-
- if (!of_property_read_u32(node, "qcom,control-dac", &of_control_dac)) {
- control_dac = phy_read_mmd(phydev, MDIO_MMD_AN,
- QCA807X_MMD7_1000BASE_T_POWER_SAVE_PER_CABLE_LENGTH);
- control_dac &= ~QCA807X_CONTROL_DAC_MASK;
- control_dac |= FIELD_PREP(QCA807X_CONTROL_DAC_MASK, of_control_dac);
- ret = phy_write_mmd(phydev, MDIO_MMD_AN,
- QCA807X_MMD7_1000BASE_T_POWER_SAVE_PER_CABLE_LENGTH,
- control_dac);
- }
-
- /* Optionally configure LED-s */
- if (IS_ENABLED(CONFIG_GPIOLIB)) {
- /* Check whether PHY-s pins are used as GPIO-s */
- if (!of_property_read_bool(node, "gpio-controller"))
- ret = qca807x_led_config(phydev);
- } else {
- ret = qca807x_led_config(phydev);
- }
-
- return ret;
-}
-
-static int qca807x_probe(struct phy_device *phydev)
-{
- struct device_node *node = phydev->mdio.dev.of_node;
- int ret = 0;
-
- if (IS_ENABLED(CONFIG_GPIOLIB)) {
- /* Do not register a GPIO controller unless flagged for it */
- if (of_property_read_bool(node, "gpio-controller"))
- ret = qca807x_gpio(phydev);
- }
-
- /* Attach SFP bus on combo port*/
- if (phy_read(phydev, QCA807X_CHIP_CONFIGURATION)) {
- ret = phy_sfp_probe(phydev, &qca807x_sfp_ops);
- linkmode_set_bit(ETHTOOL_LINK_MODE_FIBRE_BIT, phydev->supported);
- linkmode_set_bit(ETHTOOL_LINK_MODE_FIBRE_BIT, phydev->advertising);
- }
-
- return ret;
-}
-
-static int qca807x_psgmii_config(struct phy_device *phydev)
-{
- struct device_node *node = phydev->mdio.dev.of_node;
- int tx_amp, ret = 0;
- u32 tx_driver_strength;
-
- /* Workaround to enable AZ transmitting ability */
- ret = phy_clear_bits_mmd(phydev,
- MDIO_MMD_PMAPMD,
- PSGMII_MODE_CTRL,
- PSGMII_MODE_CTRL_AZ_WORKAROUND_MASK);
-
- /* PSGMII/QSGMII TX amp set to DT defined value instead of default 600mV */
- if (!of_property_read_u32(node, "qcom,tx-driver-strength", &tx_driver_strength)) {
- tx_amp = phy_read(phydev, PSGMII_QSGMII_DRIVE_CONTROL_1);
- tx_amp &= ~PSGMII_QSGMII_TX_DRIVER_MASK;
- tx_amp |= FIELD_PREP(PSGMII_QSGMII_TX_DRIVER_MASK, tx_driver_strength);
- ret = phy_write(phydev, PSGMII_QSGMII_DRIVE_CONTROL_1, tx_amp);
- }
-
- return ret;
-}
-
-static struct phy_driver qca807x_drivers[] = {
- {
- PHY_ID_MATCH_EXACT(PHY_ID_QCA8072),
- .name = "Qualcomm QCA8072",
- .flags = PHY_POLL_CABLE_TEST,
- /* PHY_GBIT_FEATURES */
- .probe = qca807x_probe,
- .config_init = qca807x_config,
- .read_status = qca807x_read_status,
- .config_intr = qca807x_config_intr,
- .handle_interrupt = qca807x_handle_interrupt,
- .soft_reset = genphy_soft_reset,
- .get_tunable = qca807x_get_tunable,
- .set_tunable = qca807x_set_tunable,
- .resume = genphy_resume,
- .suspend = genphy_suspend,
- .cable_test_start = qca807x_cable_test_start,
- .cable_test_get_status = qca807x_cable_test_get_status,
- },
- {
- PHY_ID_MATCH_EXACT(PHY_ID_QCA8075),
- .name = "Qualcomm QCA8075",
- .flags = PHY_POLL_CABLE_TEST,
- /* PHY_GBIT_FEATURES */
- .probe = qca807x_probe,
- .config_init = qca807x_config,
- .read_status = qca807x_read_status,
- .config_intr = qca807x_config_intr,
- .handle_interrupt = qca807x_handle_interrupt,
- .soft_reset = genphy_soft_reset,
- .get_tunable = qca807x_get_tunable,
- .set_tunable = qca807x_set_tunable,
- .resume = genphy_resume,
- .suspend = genphy_suspend,
- .cable_test_start = qca807x_cable_test_start,
- .cable_test_get_status = qca807x_cable_test_get_status,
- },
- {
- PHY_ID_MATCH_EXACT(PHY_ID_QCA807X_PSGMII),
- .name = "Qualcomm QCA807x PSGMII",
- .probe = qca807x_psgmii_config,
- },
-};
-module_phy_driver(qca807x_drivers);
-
-static struct mdio_device_id __maybe_unused qca807x_tbl[] = {
- { PHY_ID_MATCH_EXACT(PHY_ID_QCA8072) },
- { PHY_ID_MATCH_EXACT(PHY_ID_QCA8075) },
- { PHY_ID_MATCH_MODEL(PHY_ID_QCA807X_PSGMII) },
- { }
-};
-
-MODULE_AUTHOR("Robert Marko");
-MODULE_DESCRIPTION("Qualcomm QCA807x PHY driver");
-MODULE_DEVICE_TABLE(mdio, qca807x_tbl);
-MODULE_LICENSE("GPL");
projects / openwrt / staging / jow.git / commitdiff