1 // SPDX-License-Identifier: GPL-2.0+
8  *	Broadcom BCM54810, BCM54811 BroadR-Reach transceivers.
15 #include "bcm-phy-lib.h"
27 	((phydev)->drv->phy_id & (phydev)->drv->phy_id_mask)
30 	((phydev)->drv->phy_id & ~((phydev)->drv->phy_id_mask))
57 /* Long-Distance Signaling (BroadR-Reach mode aneg) relevant linkmode bits */
68 	struct bcm54xx_phy_priv *priv = phydev->priv;  in bcm54xx_phy_can_wakeup()
70 	return phy_interrupt_is_valid(phydev) || priv->wake_irq >= 0;  in bcm54xx_phy_can_wakeup()
80 	if (phydev->interface == PHY_INTERFACE_MODE_RGMII ||  in bcm54xx_config_clock_delay()
81 	    phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID) {  in bcm54xx_config_clock_delay()
82 		/* Disable RGMII RXC-RXD skew */  in bcm54xx_config_clock_delay()
85 	if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID ||  in bcm54xx_config_clock_delay()
86 	    phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) {  in bcm54xx_config_clock_delay()
87 		/* Enable RGMII RXC-RXD skew */  in bcm54xx_config_clock_delay()
97 	if (phydev->interface == PHY_INTERFACE_MODE_RGMII ||  in bcm54xx_config_clock_delay()
98 	    phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) {  in bcm54xx_config_clock_delay()
102 	if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID ||  in bcm54xx_config_clock_delay()
103 	    phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID) {  in bcm54xx_config_clock_delay()
120 	if (phydev->dev_flags & PHY_BRCM_EN_MASTER_MODE) {  in bcm54210e_config_init()
136 	if (!(phydev->dev_flags & PHY_BRCM_RX_REFCLK_UNUSED)) {  in bcm54612e_config_init()
154 	if (phydev->interface != PHY_INTERFACE_MODE_SGMII &&  in bcm54616s_config_init()
155 	    phydev->interface != PHY_INTERFACE_MODE_1000BASEX)  in bcm54616s_config_init()
158 	/* Ensure proper interface mode is selected. */  in bcm54616s_config_init()
159 	/* Disable RGMII mode */  in bcm54616s_config_init()
170 	/* Select 1000BASE-X register set (primary SerDes) */  in bcm54616s_config_init()
184 	/* Select proper interface mode */  in bcm54616s_config_init()
186 	val |= phydev->interface == PHY_INTERFACE_MODE_SGMII ?  in bcm54616s_config_init()
260 		if (phydev->drv->phy_id == PHY_ID_BCM50610) {  in bcm54xx_phydsp_config()
318 		if (phydev->dev_flags & PHY_BRCM_RX_REFCLK_UNUSED) {  in bcm54xx_adjust_rxrefclk()
327 	if (!clk125en || (phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE))  in bcm54xx_adjust_rxrefclk()
332 	if (phydev->dev_flags & PHY_BRCM_DIS_TXCRXC_NOENRGY) {  in bcm54xx_adjust_rxrefclk()
350 	if (!clk125en || (phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE))  in bcm54xx_adjust_rxrefclk()
361 	struct bcm54xx_phy_priv *priv = phydev->priv;  in bcm54xx_ptp_stop()
363 	if (priv->ptp)  in bcm54xx_ptp_stop()
364 		bcm_ptp_stop(priv->ptp);  in bcm54xx_ptp_stop()
369 	struct bcm54xx_phy_priv *priv = phydev->priv;  in bcm54xx_ptp_config_init()
371 	if (priv->ptp)  in bcm54xx_ptp_config_init()
396 	/* Ensure LRE or IEEE register set is accessed according to the brr  in bcm5481x_set_brrmode()
409 	struct bcm54xx_phy_priv *priv = phydev->priv;  in bcm54811_config_init()
413 	if (!(phydev->dev_flags & PHY_BRCM_RX_REFCLK_UNUSED)) {  in bcm54811_config_init()
423 	/* With BCM54811, BroadR-Reach implies no autoneg */  in bcm54811_config_init()
424 	if (priv->brr_mode)  in bcm54811_config_init()
425 		phydev->autoneg = 0;  in bcm54811_config_init()
427 	return bcm5481x_set_brrmode(phydev, priv->brr_mode);  in bcm54811_config_init()
454 	    (phydev->dev_flags & PHY_BRCM_CLEAR_RGMII_MODE))  in bcm54xx_config_init()
474 		/* For BCM54810, we need to disable BroadR-Reach function */  in bcm54xx_config_init()
491 	/* For non-SFP setups, encode link speed into LED1 and LED3 pair  in bcm54xx_config_init()
513 	 * wake-up.  in bcm54xx_config_init()
520 		pm_wakeup_event(&phydev->mdio.dev, 0);  in bcm54xx_config_init()
529 	if (!(phydev->dev_flags & PHY_BRCM_IDDQ_SUSPEND))  in bcm54xx_iddq_set()
548 	struct bcm54xx_phy_priv *priv = phydev->priv;  in bcm54xx_set_wakeup_irq()
554 	if (priv->wake_irq_enabled != state) {  in bcm54xx_set_wakeup_irq()
556 			ret = enable_irq_wake(priv->wake_irq);  in bcm54xx_set_wakeup_irq()
558 			ret = disable_irq_wake(priv->wake_irq);  in bcm54xx_set_wakeup_irq()
559 		priv->wake_irq_enabled = state;  in bcm54xx_set_wakeup_irq()
571 	/* Acknowledge any Wake-on-LAN interrupt prior to suspend */  in bcm54xx_suspend()
576 	if (phydev->wol_enabled)  in bcm54xx_suspend()
581 	 * of low power mode.  in bcm54xx_suspend()
594 	if (phydev->wol_enabled) {  in bcm54xx_resume()
619 	if (phydev->dev_flags & PHY_BRCM_IDDQ_SUSPEND) {  in bcm54xx_resume()
630 	return -EOPNOTSUPP;  in bcm54810_read_mmd()
636 	return -EOPNOTSUPP;  in bcm54810_write_mmd()
641  * bcm5481x_read_abilities - read PHY abilities from LRESR or Clause 22
642  * (BMSR) registers, based on whether the PHY is in BroadR-Reach or IEEE mode
645  * Description: Reads the PHY's abilities and populates phydev->supported
647  * the brr mode setting of the PHY as read from the device tree.
649  * not only the link modes differ, but also the auto-negotiation and
650  * master-slave setup is controlled differently.
656 	struct device_node *np = phydev->mdio.dev.of_node;  in bcm5481x_read_abilities()
657 	struct bcm54xx_phy_priv *priv = phydev->priv;  in bcm5481x_read_abilities()
661 		linkmode_clear_bit(bcm54811_linkmodes[i], phydev->supported);  in bcm5481x_read_abilities()
663 	priv->brr_mode = of_property_read_bool(np, "brr-mode");  in bcm5481x_read_abilities()
665 	/* Set BroadR-Reach mode as configured in the DT. */  in bcm5481x_read_abilities()
666 	err = bcm5481x_set_brrmode(phydev, priv->brr_mode);  in bcm5481x_read_abilities()
670 	if (priv->brr_mode) {  in bcm5481x_read_abilities()
673 				       phydev->supported);  in bcm5481x_read_abilities()
680 				 phydev->supported,  in bcm5481x_read_abilities()
683 				 phydev->supported,  in bcm5481x_read_abilities()
686 				 phydev->supported,  in bcm5481x_read_abilities()
696 	struct device_node *np = phydev->mdio.dev.of_node;  in bcm5481x_config_delay_swap()
701 	if (of_property_read_bool(np, "enet-phy-lane-swap")) {  in bcm5481x_config_delay_swap()
702 		/* Lane Swap - Undocumented register...magic! */  in bcm5481x_config_delay_swap()
715 	struct bcm54xx_phy_priv *priv = phydev->priv;  in bcm5481_config_aneg()
719 	if (priv->brr_mode)  in bcm5481_config_aneg()
733 	struct bcm54xx_phy_priv *priv = phydev->priv;  in bcm54811_config_aneg()
737 	if (priv->brr_mode) {  in bcm54811_config_aneg()
738 		/* BCM54811 is only capable of autonegotiation in IEEE mode */  in bcm54811_config_aneg()
739 		phydev->autoneg = 0;  in bcm54811_config_aneg()
761 	priv = devm_kzalloc(&phydev->mdio.dev, sizeof(*priv), GFP_KERNEL);  in bcm54616s_probe()
763 		return -ENOMEM;  in bcm54616s_probe()
765 	phydev->priv = priv;  in bcm54616s_probe()
771 	/* The PHY is strapped in RGMII-fiber mode when INTERF_SEL[1:0]  in bcm54616s_probe()
773 	 * either 1000Base-X or 100Base-FX.  in bcm54616s_probe()
774 	 * RGMII-1000Base-X is properly supported, but RGMII-100Base-FX  in bcm54616s_probe()
782 		/* Bit 0 of the SerDes 100-FX Control register, when set  in bcm54616s_probe()
783 		 * to 1, sets the MII/RGMII -> 100BASE-FX configuration.  in bcm54616s_probe()
784 		 * When this bit is set to 0, it sets the GMII/RGMII ->  in bcm54616s_probe()
785 		 * 1000BASE-X configuration.  in bcm54616s_probe()
788 			priv->mode_1000bx_en = true;  in bcm54616s_probe()
790 		phydev->port = PORT_FIBRE;  in bcm54616s_probe()
798 	struct bcm54616s_phy_priv *priv = phydev->priv;  in bcm54616s_config_aneg()
802 	if (priv->mode_1000bx_en)  in bcm54616s_config_aneg()
815 	struct bcm54616s_phy_priv *priv = phydev->priv;  in bcm54616s_read_status()
819 	if (priv->mode_1000bx_en)  in bcm54616s_read_status()
844 	 * We ignore -EIO here as the MDIO controller (e.g.: mdio-bcm-unimac)  in brcm_fet_config_init()
845 	 * may flag the lack of turn-around as a read failure. This is  in brcm_fet_config_init()
853 	if (err < 0 && err != -EIO)  in brcm_fet_config_init()
862 	if (phydev->phy_id == PHY_ID_BCM5221)  in brcm_fet_config_init()
891 	if (phydev->phy_id != PHY_ID_BCM5221) {  in brcm_fet_config_init()
892 		/* Set the LED mode */  in brcm_fet_config_init()
912 	if (phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE) {  in brcm_fet_config_init()
949 	if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {  in brcm_fet_config_intr()
991 	 * to drive LEDs which defeats the purpose of low power mode.  in brcm_fet_suspend()
1012 	if (phydev->phy_id == PHY_ID_BCM5221)  in brcm_fet_suspend()
1013 		/* Force Low Power Mode with clock enabled */  in brcm_fet_suspend()
1016 		/* Set standby mode */  in brcm_fet_suspend()
1039 	switch (phydev->mdix_ctrl) {  in bcm5221_config_aneg()
1069 			phydev->mdix_ctrl = ETH_TP_MDI_X;  in bcm5221_read_status()
1071 			phydev->mdix_ctrl = ETH_TP_MDI;  in bcm5221_read_status()
1073 		phydev->mdix_ctrl = ETH_TP_MDI_AUTO;  in bcm5221_read_status()
1077 		phydev->mdix = ETH_TP_MDI_X;  in bcm5221_read_status()
1079 		phydev->mdix = ETH_TP_MDI;  in bcm5221_read_status()
1087 	/* We cannot wake-up if we do not have a dedicated PHY interrupt line  in bcm54xx_phy_get_wol()
1088 	 * or an out of band GPIO descriptor for wake-up. Zeroing  in bcm54xx_phy_get_wol()
1089 	 * wol->supported allows the caller (MAC driver) to play through and  in bcm54xx_phy_get_wol()
1090 	 * offer its own Wake-on-LAN scheme if available.  in bcm54xx_phy_get_wol()
1093 		wol->supported = 0;  in bcm54xx_phy_get_wol()
1105 	/* We cannot wake-up if we do not have a dedicated PHY interrupt line  in bcm54xx_phy_set_wol()
1106 	 * or an out of band GPIO descriptor for wake-up. Returning -EOPNOTSUPP  in bcm54xx_phy_set_wol()
1108 	 * Wake-on-LAN scheme if available.  in bcm54xx_phy_set_wol()
1111 		return -EOPNOTSUPP;  in bcm54xx_phy_set_wol()
1126 	priv = devm_kzalloc(&phydev->mdio.dev, sizeof(*priv), GFP_KERNEL);  in bcm54xx_phy_probe()
1128 		return -ENOMEM;  in bcm54xx_phy_probe()
1130 	priv->wake_irq = -ENXIO;  in bcm54xx_phy_probe()
1132 	phydev->priv = priv;  in bcm54xx_phy_probe()
1134 	priv->stats = devm_kcalloc(&phydev->mdio.dev,  in bcm54xx_phy_probe()
1137 	if (!priv->stats)  in bcm54xx_phy_probe()
1138 		return -ENOMEM;  in bcm54xx_phy_probe()
1140 	priv->ptp = bcm_ptp_probe(phydev);  in bcm54xx_phy_probe()
1141 	if (IS_ERR(priv->ptp))  in bcm54xx_phy_probe()
1142 		return PTR_ERR(priv->ptp);  in bcm54xx_phy_probe()
1145 	 * whether the GPIO descriptor exists or not to advertise Wake-on-LAN  in bcm54xx_phy_probe()
1148 	wakeup_gpio = devm_gpiod_get(&phydev->mdio.dev, "wakeup", GPIOD_IN);  in bcm54xx_phy_probe()
1149 	if (PTR_ERR(wakeup_gpio) == -EPROBE_DEFER)  in bcm54xx_phy_probe()
1153 		priv->wake_irq = gpiod_to_irq(wakeup_gpio);  in bcm54xx_phy_probe()
1156 		 * in order for the interrupt descriptor to be fully set-up.  in bcm54xx_phy_probe()
1158 		ret = devm_request_irq(&phydev->mdio.dev, priv->wake_irq,  in bcm54xx_phy_probe()
1161 				       dev_name(&phydev->mdio.dev), phydev);  in bcm54xx_phy_probe()
1166 	/* If we do not have a main interrupt or a side-band wake-up interrupt,  in bcm54xx_phy_probe()
1167 	 * then the device cannot be marked as wake-up capable.  in bcm54xx_phy_probe()
1172 	return device_init_wakeup(&phydev->mdio.dev, true);  in bcm54xx_phy_probe()
1178 	struct bcm54xx_phy_priv *priv = phydev->priv;  in bcm54xx_get_stats()
1180 	bcm_phy_get_stats(phydev, priv->stats, stats, data);  in bcm54xx_get_stats()
1189 	if (phydev->state != PHY_RUNNING)  in bcm54xx_link_change_notify()
1195 	if (!(phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE))  in bcm54xx_link_change_notify()
1206 	if (phydev->speed == SPEED_10)  in bcm54xx_link_change_notify()
1218 	/* In BroadR-Reach mode we are always capable of master-slave  in lre_read_master_slave()
1221 	phydev->master_slave_get = MASTER_SLAVE_CFG_UNKNOWN;  in lre_read_master_slave()
1222 	phydev->master_slave_state = MASTER_SLAVE_STATE_UNKNOWN;  in lre_read_master_slave()
1244 	phydev->master_slave_get = cfg;  in lre_read_master_slave()
1245 	phydev->master_slave_state = state;  in lre_read_master_slave()
1250 /* Read LDS Link Partner Ability in BroadR-Reach mode */
1255 	if (phydev->autoneg != AUTONEG_ENABLE) {  in lre_read_lpa()
1256 		if (!phydev->autoneg_complete) {  in lre_read_lpa()
1260 						   phydev->lp_advertising);  in lre_read_lpa()
1265 		/* Long-Distance Signaling Link Partner Ability */  in lre_read_lpa()
1271 				 phydev->lp_advertising,  in lre_read_lpa()
1274 				 phydev->lp_advertising,  in lre_read_lpa()
1277 				 phydev->lp_advertising,  in lre_read_lpa()
1280 				 phydev->lp_advertising,  in lre_read_lpa()
1283 		linkmode_zero(phydev->lp_advertising);  in lre_read_lpa()
1296 	phydev->duplex = DUPLEX_FULL;  in lre_read_status_fixed()
1299 		phydev->speed = SPEED_100;  in lre_read_status_fixed()
1301 		phydev->speed = SPEED_10;  in lre_read_status_fixed()
1307  * lre_update_link - update link status in @phydev
1311  * Description: Update the value in phydev->link to reflect the
1315  *   of BroadR-Reach PHY
1332 	 * drops can be detected. Do not double-read the status  in lre_update_link()
1333 	 * in polling mode to detect such short link drops except  in lre_update_link()
1336 	if (!phy_polling_mode(phydev) || !phydev->link) {  in lre_update_link()
1349 	phydev->link = status & LRESR_LSTATUS ? 1 : 0;  in lre_update_link()
1350 	phydev->autoneg_complete = status & LRESR_LDSCOMPLETE ? 1 : 0;  in lre_update_link()
1355 	if (phydev->autoneg == AUTONEG_ENABLE && !phydev->autoneg_complete)  in lre_update_link()
1356 		phydev->link = 0;  in lre_update_link()
1361 /* Get the status in BroadRReach mode just like genphy_read_status does
1362 *   in normal mode
1366 	int err, old_link = phydev->link;  in bcm54811_lre_read_status()
1374 	if (phydev->autoneg ==  in bcm54811_lre_read_status()
1375 		AUTONEG_ENABLE && old_link && phydev->link)  in bcm54811_lre_read_status()
1378 	phydev->speed = SPEED_UNKNOWN;  in bcm54811_lre_read_status()
1379 	phydev->duplex = DUPLEX_UNKNOWN;  in bcm54811_lre_read_status()
1380 	phydev->pause = 0;  in bcm54811_lre_read_status()
1381 	phydev->asym_pause = 0;  in bcm54811_lre_read_status()
1392 	if (phydev->autoneg == AUTONEG_ENABLE && phydev->autoneg_complete)  in bcm54811_lre_read_status()
1394 	else if (phydev->autoneg == AUTONEG_DISABLE)  in bcm54811_lre_read_status()
1402 	struct bcm54xx_phy_priv *priv = phydev->priv;  in bcm54811_read_status()
1404 	if (priv->brr_mode)  in bcm54811_read_status()