1 // SPDX-License-Identifier: GPL-2.0+
3  * drivers/net/phy/smsc.c
5  * Driver for SMSC PHYs
11  * Support added for SMSC LAN8187 and LAN8700 by steve.glendinning@shawell.net
21 #include <linux/phy.h>
27 /* Vendor-specific PHY Definitions */
70 	if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {  in smsc_phy_config_intr()
91 	struct smsc_phy_priv *priv = phydev->priv;  in smsc_phy_config_edpd()
93 	if (priv->edpd_enable)  in smsc_phy_config_edpd()
107 		if (irq_status != -ENODEV)  in smsc_phy_handle_interrupt()
124 	struct smsc_phy_priv *priv = phydev->priv;  in smsc_phy_config_init()
130 	if (!priv->edpd_mode_set_by_user && phydev->irq != PHY_POLL)  in smsc_phy_config_init()
131 		priv->edpd_enable = false;  in smsc_phy_config_init()
143 	/* If the SMSC PHY is in power down mode, then set it  in smsc_phy_reset()
152 	/* reset the phy */  in smsc_phy_reset()
161 	switch (phydev->mdix_ctrl) {  in lan87xx_config_aneg()
186 	phydev->mdix = phydev->mdix_ctrl;  in lan87xx_config_aneg()
192 	if (phydev->phy_id == 0x0007c0f0) { /* LAN9500A or LAN9505A */  in lan95xx_config_aneg_ext()
205  * The LAN87xx suffers from rare absence of the ENERGYON-bit when Ethernet cable
206  * plugs in while LAN87xx is in Energy Detect Power-Down mode. This leads to
208  * This workaround disables Energy Detect Power-Down mode and waiting for
210  * The Energy Detect Power-Down mode is enabled again in the end of procedure to
212  * The workaround is only applicable to poll mode. Energy Detect Power-Down may
217 	struct smsc_phy_priv *priv = phydev->priv;  in lan87xx_read_status()
224 	if (!phydev->link && priv && priv->edpd_enable &&  in lan87xx_read_status()
225 	    priv->edpd_max_wait_ms) {  in lan87xx_read_status()
226 		unsigned int max_wait = priv->edpd_max_wait_ms * 1000;  in lan87xx_read_status()
229 		/* Disable EDPD to wake up PHY */  in lan87xx_read_status()
249 		/* Re-enable EDPD */  in lan87xx_read_status()
269 	/* Setup LED2/nINT/nPME pin to function as nPME.  May need user option  in lan874x_phy_config_init()
275 	 * MII_LAN874X_PHY_WOL_MPR, and MII_LAN874X_PHY_WOL_BCAST_FR need to  in lan874x_phy_config_init()
276 	 * be cleared to de-assert PME signal after a WoL event happens, but  in lan874x_phy_config_init()
297 	struct smsc_phy_priv *priv = phydev->priv;  in lan874x_get_wol()
300 	wol->supported = (WAKE_UCAST | WAKE_BCAST | WAKE_MAGIC |  in lan874x_get_wol()
302 	wol->wolopts = 0;  in lan874x_get_wol()
309 		wol->wolopts |= WAKE_UCAST;  in lan874x_get_wol()
312 		wol->wolopts |= WAKE_BCAST;  in lan874x_get_wol()
315 		wol->wolopts |= WAKE_MAGIC;  in lan874x_get_wol()
318 		if (priv->wol_arp)  in lan874x_get_wol()
319 			wol->wolopts |= WAKE_ARP;  in lan874x_get_wol()
321 			wol->wolopts |= WAKE_MCAST;  in lan874x_get_wol()
338 	 * are 8 registers to program the 16-bit masks, where each bit means  in lan874x_chk_wol_pattern()
340 	 * CRC16 calculation for hardware comparison.  This helper function  in lan874x_chk_wol_pattern()
349 		for (j = 0; j < 16; j++, i++, len--) {  in lan874x_chk_wol_pattern()
393 		reg--;  in lan874x_set_wol_pattern()
395 		masklen -= 16;  in lan874x_set_wol_pattern()
401 		reg--;  in lan874x_set_wol_pattern()
409 	struct net_device *ndev = phydev->attached_dev;  in lan874x_set_wol()
410 	struct smsc_phy_priv *priv = phydev->priv;  in lan874x_set_wol()
417 	if ((wol->wolopts & (WAKE_ARP | WAKE_MCAST)) ==  in lan874x_set_wol()
421 		return -EOPNOTSUPP;  in lan874x_set_wol()
430 	if (wol->wolopts & WAKE_UCAST)  in lan874x_set_wol()
435 	if (wol->wolopts & WAKE_BCAST)  in lan874x_set_wol()
440 	if (wol->wolopts & WAKE_MAGIC)  in lan874x_set_wol()
445 	/* Need to use pattern matching */  in lan874x_set_wol()
446 	if (wol->wolopts & (WAKE_ARP | WAKE_MCAST))  in lan874x_set_wol()
451 	if (wol->wolopts & WAKE_ARP) {  in lan874x_set_wol()
460 		/* Need to match broadcast destination address and provided  in lan874x_set_wol()
468 		priv->wol_arp = true;  in lan874x_set_wol()
471 	if (wol->wolopts & WAKE_MCAST) {  in lan874x_set_wol()
472 		/* Need to match multicast destination address. */  in lan874x_set_wol()
477 		priv->wol_arp = false;  in lan874x_set_wol()
480 	if (wol->wolopts & (WAKE_MAGIC | WAKE_UCAST)) {  in lan874x_set_wol()
481 		const u8 *mac = (const u8 *)ndev->dev_addr;  in lan874x_set_wol()
485 		for (i = 0; i < 6; i += 2, reg--) {  in lan874x_set_wol()
510 	for (i = 0; i < ARRAY_SIZE(smsc_hw_stats); i++)  in smsc_get_strings()
534 	for (i = 0; i < ARRAY_SIZE(smsc_hw_stats); i++)  in smsc_get_stats()
540 	struct smsc_phy_priv *priv = phydev->priv;  in smsc_phy_get_edpd()
543 		return -EOPNOTSUPP;  in smsc_phy_get_edpd()
545 	if (!priv->edpd_enable)  in smsc_phy_get_edpd()
547 	else if (!priv->edpd_max_wait_ms)  in smsc_phy_get_edpd()
550 		*edpd = PHY_STATE_MACH_MS + priv->edpd_max_wait_ms;  in smsc_phy_get_edpd()
557 	struct smsc_phy_priv *priv = phydev->priv;  in smsc_phy_set_edpd()
560 		return -EOPNOTSUPP;  in smsc_phy_set_edpd()
564 		priv->edpd_enable = false;  in smsc_phy_set_edpd()
567 		priv->edpd_enable = true;  in smsc_phy_set_edpd()
568 		priv->edpd_max_wait_ms = 0;  in smsc_phy_set_edpd()
574 		if (phydev->irq != PHY_POLL)  in smsc_phy_set_edpd()
575 			return -EOPNOTSUPP;  in smsc_phy_set_edpd()
577 			return -EINVAL;  in smsc_phy_set_edpd()
578 		priv->edpd_enable = true;  in smsc_phy_set_edpd()
579 		priv->edpd_max_wait_ms = edpd - PHY_STATE_MACH_MS;  in smsc_phy_set_edpd()
582 	priv->edpd_mode_set_by_user = true;  in smsc_phy_set_edpd()
590 	switch (tuna->id) {  in smsc_phy_get_tunable()
594 		return -EOPNOTSUPP;  in smsc_phy_get_tunable()
602 	switch (tuna->id) {  in smsc_phy_set_tunable()
606 		return -EOPNOTSUPP;  in smsc_phy_set_tunable()
613 	struct device *dev = &phydev->mdio.dev;  in smsc_phy_probe()
619 		return -ENOMEM;  in smsc_phy_probe()
621 	priv->edpd_enable = true;  in smsc_phy_probe()
622 	priv->edpd_max_wait_ms = EDPD_MAX_WAIT_DFLT_MS;  in smsc_phy_probe()
624 	if (device_property_present(dev, "smsc,disable-energy-detect"))  in smsc_phy_probe()
625 		priv->edpd_enable = false;  in smsc_phy_probe()
627 	phydev->priv = priv;  in smsc_phy_probe()
684 	/* This covers internal PHY (phy_id: 0x0007C0C3) for
718 	.name		= "SMSC LAN911x Internal PHY",
731 	/* This covers internal PHY (phy_id: 0x0007C0F0) for
836 MODULE_DESCRIPTION("SMSC PHY driver");