1 // SPDX-License-Identifier: GPL-2.0
274 #define SQI_INLIERS_START ((SQI_SAMPLES - SQI_INLIERS_NUM) / 2)
282 /* TEST_MODE_NORMAL: Non-hybrid results to calculate cable status(open/short/ok)
330 	struct mchp_rds_ptp_clock *clock;  member
340 	mutex_lock(&phydev->lock);  in lan937x_dsp_workaround()
360 	mutex_unlock(&phydev->lock);  in lan937x_dsp_workaround()
372 		return -EINVAL;  in access_ereg()
394 	if (phydev->phy_id == PHY_ID_LAN937X) {  in access_ereg()
416 		return -EINVAL;  in access_ereg_modify_changed()
449 	switch (phydev->interface) {  in lan87xx_config_rgmii_delay()
510 		/* Equalizer Full Duplex Freeze - T1 Slave */  in lan87xx_phy_init()
534 		/* Lock Stage 2-3 Multi Factor Config */  in lan87xx_phy_init()
643 		/* Tx AMP - 0x06  */  in lan87xx_phy_init()
675 	if (phydev->master_slave_state == MASTER_SLAVE_STATE_SLAVE) {  in lan87xx_phy_init()
693 	if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {  in lan87xx_phy_config_intr()
785 	/* If auto-negotiation is enabled, but not complete, the cable  in microchip_cable_test_start_common()
786 	 * test never completes. So disable auto-neg.  in microchip_cable_test_start_common()
831 		/* clock align for each iteration */  in lan87xx_cable_test_start()
848 	/* check if part is alive - if not, return diagnostic error */  in lan87xx_cable_test_start()
926 	int detect = -1;  in lan87xx_cable_test_report()  local
930 	/* read non-hybrid results */  in lan87xx_cable_test_report()
941 	/* calculate non-hybrid values */  in lan87xx_cable_test_report()
950 		((pos_peak_in_phases - neg_peak_in_phases) >= min_time_diff) &&  in lan87xx_cable_test_report()
951 		((pos_peak_in_phases - neg_peak_in_phases) < max_time_diff) &&  in lan87xx_cable_test_report()
955 		((neg_peak_in_phases - pos_peak_in_phases) >= min_time_diff) &&  in lan87xx_cable_test_report()
956 		((neg_peak_in_phases - pos_peak_in_phases) < max_time_diff) &&  in lan87xx_cable_test_report()
961 		detect = 2;  in lan87xx_cable_test_report()
963 		detect = 1;  in lan87xx_cable_test_report()
967 		if (detect == 1 || detect == 2)  in lan87xx_cable_test_report()
972 		detect = 0;  in lan87xx_cable_test_report()
975 				lan87xx_cable_test_report_trans(detect));  in lan87xx_cable_test_report()
1018 		phydev->link = 1;  in lan87xx_read_status()
1020 		phydev->link = 0;  in lan87xx_read_status()
1022 	phydev->speed = SPEED_UNKNOWN;  in lan87xx_read_status()
1023 	phydev->duplex = DUPLEX_UNKNOWN;  in lan87xx_read_status()
1024 	phydev->pause = 0;  in lan87xx_read_status()
1025 	phydev->asym_pause = 0;  in lan87xx_read_status()
1043 	switch (phydev->master_slave_set) {  in lan87xx_config_aneg()
1054 		return -EOPNOTSUPP;  in lan87xx_config_aneg()
1114 	/* LAN887x Errata: RGMII rx clock active in SGMII mode  in lan887x_rgmii_init()
1116 	 * Re-enabling it for RGMII mode  in lan887x_rgmii_init()
1141 	/* LAN887x Errata: RGMII rx clock active in SGMII mode.  in lan887x_sgmii_init()
1175 	 * RGMII        - TX & RX delays are either added by MAC or not needed,  in lan887x_config_rgmii_en()
1177 	 * RGMII_ID     - Configures phy to enable TX & RX delays, MAC shouldn't add  in lan887x_config_rgmii_en()
1178 	 * RGMII_RX_ID  - Configures the PHY to enable the RX delay.  in lan887x_config_rgmii_en()
1180 	 * RGMII_TX_ID  - Configures the PHY to enable the TX delay.  in lan887x_config_rgmii_en()
1183 	switch (phydev->interface) {  in lan887x_config_rgmii_en()
1201 		WARN_ONCE(1, "Invalid phydev interface %d\n", phydev->interface);  in lan887x_config_rgmii_en()
1234 	switch (phydev->interface) {  in lan887x_config_phy_interface()
1240 		ret = -EOPNOTSUPP;  in lan887x_config_phy_interface()
1248 		ret = -EOPNOTSUPP;  in lan887x_config_phy_interface()
1255 		ret = -EOPNOTSUPP;  in lan887x_config_phy_interface()
1270 	linkmode_set_bit(ETHTOOL_LINK_MODE_TP_BIT, phydev->supported);  in lan887x_get_features()
1272 	/* First patch only supports 100Mbps and 1000Mbps force-mode.  in lan887x_get_features()
1273 	 * T1 Auto-Negotiation (Clause 98 of IEEE 802.3) will be added later.  in lan887x_get_features()
1275 	linkmode_clear_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, phydev->supported);  in lan887x_get_features()
1282 	struct lan887x_priv *priv = phydev->priv;  in lan887x_phy_init()
1285 	if (!priv->init_done && phy_interrupt_is_valid(phydev)) {  in lan887x_phy_init()
1286 		priv->clock = mchp_rds_ptp_probe(phydev, MDIO_MMD_VEND1,  in lan887x_phy_init()
1289 		if (IS_ERR(priv->clock))  in lan887x_phy_init()
1290 			return PTR_ERR(priv->clock);  in lan887x_phy_init()
1299 		priv->clock->event_pin = 3;  in lan887x_phy_init()
1301 		priv->init_done = true;  in lan887x_phy_init()
1380 	if (phydev->master_slave_set == MASTER_SLAVE_CFG_MASTER_FORCE ||  in lan887x_100M_setup()
1381 	    phydev->master_slave_set == MASTER_SLAVE_CFG_MASTER_PREFERRED){  in lan887x_100M_setup()
1423 	int ret = -EINVAL;  in lan887x_link_setup()
1425 	if (phydev->speed == SPEED_1000)  in lan887x_link_setup()
1427 	else if (phydev->speed == SPEED_100)  in lan887x_link_setup()
1452 	/* Chiptop soft-reset to allow the speed/mode change */  in lan887x_phy_reset()
1458 	/* CL22 soft-reset to let the link re-train */  in lan887x_phy_reset()
1472 	linkmode_zero(phydev->advertising);  in lan887x_phy_reconfig()
1499 	priv = devm_kzalloc(&phydev->mdio.dev, sizeof(*priv), GFP_KERNEL);  in lan887x_probe()
1501 		return -ENOMEM;  in lan887x_probe()
1503 	priv->init_done = false;  in lan887x_probe()
1504 	phydev->priv = priv;  in lan887x_probe()
1512 	struct lan887x_priv *priv = phydev->priv;  in lan887x_get_stat()
1524 		val = val & ((1 << stat.bits) - 1);  in lan887x_get_stat()
1525 		priv->stats[i] += val;  in lan887x_get_stat()
1526 		ret = priv->stats[i];  in lan887x_get_stat()
1552 	struct lan887x_priv *priv = phydev->priv;  in lan887x_config_intr()
1555 	if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {  in lan887x_config_intr()
1576 		return mchp_rds_ptp_top_config_intr(priv->clock,  in lan887x_config_intr()
1579 					(phydev->interrupts ==  in lan887x_config_intr()
1588 	struct lan887x_priv *priv = phydev->priv;  in lan887x_handle_interrupt()
1604 		rc = mchp_rds_ptp_handle_interrupt(priv->clock);  in lan887x_handle_interrupt()
1615 	/* Chip hard-reset */  in lan887x_cd_reset()
1758 			return -EAGAIN;  in lan887x_cable_test_chk()
1793 	int detect;  in lan887x_cable_test_report()  local
1798 	/* Read non-hybrid results */  in lan887x_cable_test_report()
1803 		goto error;  in lan887x_cable_test_report()
1810 		goto error;  in lan887x_cable_test_report()
1817 		goto error;  in lan887x_cable_test_report()
1824 		goto error;  in lan887x_cable_test_report()
1831 		goto error;  in lan887x_cable_test_report()
1834 	/* Calculate non-hybrid values */  in lan887x_cable_test_report()
1844 		    ((pos_peak_in_phases - neg_peak_in_phases) >=  in lan887x_cable_test_report()
1846 		    ((pos_peak_in_phases - neg_peak_in_phases) <  in lan887x_cable_test_report()
1849 			detect = LAN87XX_CABLE_TEST_SAME_SHORT;  in lan887x_cable_test_report()
1851 			   ((neg_peak_in_phases - pos_peak_in_phases) >=  in lan887x_cable_test_report()
1853 			   ((neg_peak_in_phases - pos_peak_in_phases) <  in lan887x_cable_test_report()
1856 			detect = LAN87XX_CABLE_TEST_OPEN;  in lan887x_cable_test_report()
1858 			detect = LAN87XX_CABLE_TEST_OK;  in lan887x_cable_test_report()
1861 		detect = LAN87XX_CABLE_TEST_OK;  in lan887x_cable_test_report()
1864 	if (detect == LAN87XX_CABLE_TEST_OK) {  in lan887x_cable_test_report()
1869 	/* Re-initialize PHY and start cable diag test */  in lan887x_cable_test_report()
1884 		goto error;  in lan887x_cable_test_report()
1891 		goto error;  in lan887x_cable_test_report()
1901 	 * distance = (peak_in_phases - peak_in_phases_hybrid) *  in lan887x_cable_test_report()
1909 	if (detect == LAN87XX_CABLE_TEST_OPEN) {  in lan887x_cable_test_report()
1910 		distance = (((pos_peak_in_phases - pos_peak_in_phases_hybrid)  in lan887x_cable_test_report()
1912 	} else if (detect == LAN87XX_CABLE_TEST_SAME_SHORT) {  in lan887x_cable_test_report()
1913 		distance = (((neg_peak_in_phases - pos_peak_in_phases_hybrid)  in lan887x_cable_test_report()
1926 				lan87xx_cable_test_report_trans(detect));  in lan887x_cable_test_report()
1939 error:  in lan887x_cable_test_report()
1945 	/* Return error in failure case */  in lan887x_cable_test_report()
1957 		if (rc == -EAGAIN)  in lan887x_cable_test_get_status()
1972 	return  *(u16 *)a - *(u16 *)b;  in sqi_compare()
1996 		return -EINVAL;  in lan887x_get_sqi_100M()
2014 	if (!phydev->link)  in lan887x_get_sqi_100M()
2015 		return -ENETDOWN;  in lan887x_get_sqi_100M()
2038 	if (!phydev->link)  in lan887x_get_sqi_100M()
2039 		return -ENETDOWN;  in lan887x_get_sqi_100M()
2078 	if (phydev->speed != SPEED_1000 &&  in lan887x_get_sqi()
2079 	    phydev->speed != SPEED_100)  in lan887x_get_sqi()
2080 		return -ENETDOWN;  in lan887x_get_sqi()
2082 	if (phydev->speed == SPEED_100)  in lan887x_get_sqi()