1 // SPDX-License-Identifier: GPL-2.0-only
5  * Copyright (c) 2014-2017 Broadcom
10 #include <linux/delay.h>
24 #include <linux/platform_data/mdio-bcm-unimac.h>
31 	struct phy_device *phydev = dev->phydev;  in bcmgenet_mac_config()
35 	if (phydev->speed == SPEED_1000)  in bcmgenet_mac_config()
37 	else if (phydev->speed == SPEED_100)  in bcmgenet_mac_config()
44 	if (phydev->duplex != DUPLEX_FULL) {  in bcmgenet_mac_config()
49 		if (priv->autoneg_pause) {  in bcmgenet_mac_config()
52 			if (phydev->autoneg)  in bcmgenet_mac_config()
62 		if (!priv->rx_pause)  in bcmgenet_mac_config()
64 		if (!priv->tx_pause)  in bcmgenet_mac_config()
70 	 * umac->cmd tell RGMII block which clock to use for  in bcmgenet_mac_config()
71 	 * transmit -- 25MHz(100Mbps) or 125MHz(1Gbps).  in bcmgenet_mac_config()
98 	struct phy_device *phydev = dev->phydev;  in bcmgenet_mii_setup()
100 	if (phydev->link)  in bcmgenet_mii_setup()
112 	if (dev && dev->phydev && status) {  in bcmgenet_fixed_phy_link_update()
115 		status->link = !!(reg & MODE_LINK_STATUS);  in bcmgenet_fixed_phy_link_update()
121 void bcmgenet_phy_pause_set(struct net_device *dev, bool rx, bool tx)  in bcmgenet_phy_pause_set()  argument
123 	struct phy_device *phydev = dev->phydev;  in bcmgenet_phy_pause_set()
125 	linkmode_mod_bit(ETHTOOL_LINK_MODE_Pause_BIT, phydev->advertising, rx);  in bcmgenet_phy_pause_set()
126 	linkmode_mod_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, phydev->advertising,  in bcmgenet_phy_pause_set()
127 			 rx | tx);  in bcmgenet_phy_pause_set()
130 	mutex_lock(&phydev->lock);  in bcmgenet_phy_pause_set()
131 	if (phydev->link)  in bcmgenet_phy_pause_set()
133 	mutex_unlock(&phydev->lock);  in bcmgenet_phy_pause_set()
142 	if (GENET_IS_V4(priv) || priv->ephy_16nm) {  in bcmgenet_phy_power_set()
181 	if (priv->hw_params->flags & GENET_HAS_MOCA_LINK_DET)  in bcmgenet_moca_phy_setup()
182 		fixed_phy_set_link_update(priv->dev->phydev,  in bcmgenet_moca_phy_setup()
189 	struct phy_device *phydev = dev->phydev;  in bcmgenet_mii_config()
190 	struct device *kdev = &priv->pdev->dev;  in bcmgenet_mii_config()
196 	switch (priv->phy_interface) {  in bcmgenet_mii_config()
198 		phy_name = "internal PHY";  in bcmgenet_mii_config()
202 		 * 1000) GENETv4 only has an internal GPHY so we will just end  in bcmgenet_mii_config()
225 		/* of_mdiobus_register took care of reading the 'max-speed'  in bcmgenet_mii_config()
231 				      dev->phydev->supported))  in bcmgenet_mii_config()
239 		 *		(requires PCB or receiver-side delay)  in bcmgenet_mii_config()
243 		phy_name = "external RGMII (no delay)";  in bcmgenet_mii_config()
249 		/* RGMII_TXID:	Add 2ns delay on TXC (90 degree shift) */  in bcmgenet_mii_config()
250 		phy_name = "external RGMII (TX delay)";  in bcmgenet_mii_config()
255 		phy_name = "external RGMII (RX delay)";  in bcmgenet_mii_config()
259 		dev_err(kdev, "unknown phy mode: %d\n", priv->phy_interface);  in bcmgenet_mii_config()
260 		return -EINVAL;  in bcmgenet_mii_config()
265 	priv->ext_phy = !priv->internal_phy &&  in bcmgenet_mii_config()
266 			(priv->phy_interface != PHY_INTERFACE_MODE_MOCA);  in bcmgenet_mii_config()
271 	if (priv->ext_phy) {  in bcmgenet_mii_config()
291 	struct device *kdev = &priv->pdev->dev;  in bcmgenet_mii_probe()
292 	struct device_node *dn = kdev->of_node;  in bcmgenet_mii_probe()
293 	phy_interface_t phy_iface = priv->phy_interface;  in bcmgenet_mii_probe()
301 	if (priv->internal_phy)  in bcmgenet_mii_probe()
302 		phy_flags = priv->gphy_rev;  in bcmgenet_mii_probe()
322 	 * Note that internal PHY, MoCA and fixed-link configurations are not  in bcmgenet_mii_probe()
326 	switch (priv->phy_interface) {  in bcmgenet_mii_probe()
338 		phydev = of_phy_connect(dev, priv->phy_dn, bcmgenet_mii_setup,  in bcmgenet_mii_probe()
342 			return -ENODEV;  in bcmgenet_mii_probe()
349 			snprintf(mdio_bus_id, MII_BUS_ID_SIZE, "%s-%d",  in bcmgenet_mii_probe()
350 				 UNIMAC_MDIO_DRV_NAME, priv->pdev->id);  in bcmgenet_mii_probe()
355 				return -ENODEV;  in bcmgenet_mii_probe()
358 			put_device(&unimacbus->dev);  in bcmgenet_mii_probe()
361 				return -ENODEV;  in bcmgenet_mii_probe()
364 			phydev = dev->phydev;  in bcmgenet_mii_probe()
366 		phydev->dev_flags = phy_flags;  in bcmgenet_mii_probe()
372 			return -ENODEV;  in bcmgenet_mii_probe()
377 	 * reading the 'max-speed' property determines the maximum supported  in bcmgenet_mii_probe()
383 		phy_disconnect(dev->phydev);  in bcmgenet_mii_probe()
387 	/* The internal PHY has its link interrupts routed to the  in bcmgenet_mii_probe()
393 	if (priv->internal_phy && !GENET_IS_V5(priv))  in bcmgenet_mii_probe()
394 		dev->phydev->irq = PHY_MAC_INTERRUPT;  in bcmgenet_mii_probe()
397 	dev->phydev->mac_managed_pm = true;  in bcmgenet_mii_probe()
404 	struct device_node *dn = priv->pdev->dev.of_node;  in bcmgenet_mii_of_find_mdio()
405 	struct device *kdev = &priv->pdev->dev;  in bcmgenet_mii_of_find_mdio()
408 	compat = kasprintf(GFP_KERNEL, "brcm,genet-mdio-v%d", priv->version);  in bcmgenet_mii_of_find_mdio()
412 	priv->mdio_dn = of_get_compatible_child(dn, compat);  in bcmgenet_mii_of_find_mdio()
414 	if (!priv->mdio_dn) {  in bcmgenet_mii_of_find_mdio()
419 	return priv->mdio_dn;  in bcmgenet_mii_of_find_mdio()
425 	struct device *kdev = &priv->pdev->dev;  in bcmgenet_mii_pdata_init()
426 	struct bcmgenet_platform_data *pd = kdev->platform_data;  in bcmgenet_mii_pdata_init()
428 	if (pd->phy_interface != PHY_INTERFACE_MODE_MOCA && pd->mdio_enabled) {  in bcmgenet_mii_pdata_init()
430 		 * Internal or external PHY with MDIO access  in bcmgenet_mii_pdata_init()
432 		if (pd->phy_address >= 0 && pd->phy_address < PHY_MAX_ADDR)  in bcmgenet_mii_pdata_init()
433 			ppd->phy_mask = 1 << pd->phy_address;  in bcmgenet_mii_pdata_init()
435 			ppd->phy_mask = 0;  in bcmgenet_mii_pdata_init()
443 	wait_event_timeout(priv->wq,  in bcmgenet_mii_wait()
452 	struct platform_device *pdev = priv->pdev;  in bcmgenet_mii_register()
453 	struct bcmgenet_platform_data *pdata = pdev->dev.platform_data;  in bcmgenet_mii_register()
454 	struct device_node *dn = pdev->dev.of_node;  in bcmgenet_mii_register()
462 		dev_err(&pdev->dev, "Invalid resource\n");  in bcmgenet_mii_register()
463 		return -EINVAL;  in bcmgenet_mii_register()
473 	 * and is 2 * 32-bits word long, 8 bytes total.  in bcmgenet_mii_register()
475 	res.start = pres->start + GENET_UMAC_OFF + UMAC_MDIO_CMD;  in bcmgenet_mii_register()
482 		id = pdev->id;  in bcmgenet_mii_register()
486 		return -ENOMEM;  in bcmgenet_mii_register()
489 	priv->mii_pdev = ppdev;  in bcmgenet_mii_register()
490 	ppdev->dev.parent = &pdev->dev;  in bcmgenet_mii_register()
492 		ppdev->dev.of_node = bcmgenet_mii_of_find_mdio(priv);  in bcmgenet_mii_register()
518 	struct device *kdev = &priv->pdev->dev;  in bcmgenet_phy_interface_init()
526 	priv->phy_interface = phy_mode;  in bcmgenet_phy_interface_init()
529 	 * internal or not *before* we even try to probe the PHY driver  in bcmgenet_phy_interface_init()
530 	 * over MDIO as we may have shut down the internal PHY for power  in bcmgenet_phy_interface_init()
533 	if (priv->phy_interface == PHY_INTERFACE_MODE_INTERNAL)  in bcmgenet_phy_interface_init()
534 		priv->internal_phy = true;  in bcmgenet_phy_interface_init()
541 	struct device_node *dn = priv->pdev->dev.of_node;  in bcmgenet_mii_of_init()
546 	priv->phy_dn = of_parse_phandle(dn, "phy-handle", 0);  in bcmgenet_mii_of_init()
551 	if (!priv->phy_dn && of_phy_is_fixed_link(dn)) {  in bcmgenet_mii_of_init()
556 		priv->phy_dn = of_node_get(dn);  in bcmgenet_mii_of_init()
565 	if (priv->phy_interface == PHY_INTERFACE_MODE_MOCA) {  in bcmgenet_mii_of_init()
568 			phydev->link = 0;  in bcmgenet_mii_of_init()
569 			put_device(&phydev->mdio.dev);  in bcmgenet_mii_of_init()
578 	struct device *kdev = &priv->pdev->dev;  in bcmgenet_mii_pd_init()
579 	struct bcmgenet_platform_data *pd = kdev->platform_data;  in bcmgenet_mii_pd_init()
584 	snprintf(mdio_bus_id, MII_BUS_ID_SIZE, "%s-%d",  in bcmgenet_mii_pd_init()
585 		 UNIMAC_MDIO_DRV_NAME, priv->pdev->id);  in bcmgenet_mii_pd_init()
587 	if (pd->phy_interface != PHY_INTERFACE_MODE_MOCA && pd->mdio_enabled) {  in bcmgenet_mii_pd_init()
589 			 mdio_bus_id, pd->phy_address);  in bcmgenet_mii_pd_init()
592 		 * Internal or external PHY with MDIO access  in bcmgenet_mii_pd_init()
594 		phydev = phy_attach(priv->dev, phy_name, pd->phy_interface);  in bcmgenet_mii_pd_init()
606 			.speed = pd->phy_speed,  in bcmgenet_mii_pd_init()
607 			.duplex = pd->phy_duplex,  in bcmgenet_mii_pd_init()
615 			return -ENODEV;  in bcmgenet_mii_pd_init()
619 		phydev->link = 0;  in bcmgenet_mii_pd_init()
623 	priv->phy_interface = pd->phy_interface;  in bcmgenet_mii_pd_init()
630 	struct device *kdev = &priv->pdev->dev;  in bcmgenet_mii_bus_init()
631 	struct device_node *dn = kdev->of_node;  in bcmgenet_mii_bus_init()
664 	struct device_node *dn = priv->pdev->dev.of_node;  in bcmgenet_mii_exit()
668 	of_node_put(priv->phy_dn);  in bcmgenet_mii_exit()
669 	platform_device_unregister(priv->mii_pdev);  in bcmgenet_mii_exit()