net/phy/adin1100.c

1 // SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
3  *  Driver for Analog Devices Industrial Ethernet T1L PHYs
14 #include <linux/phy.h>
37 #define   ADIN_IS_CFG_SLV			BIT(2)
65  * struct adin_priv - ADIN PHY driver private data
66  * @tx_level_2v4_able:		set if the PHY supports 2.4V TX levels (10BASE-T1L)
67  * @tx_level_2v4:		set if the PHY requests 2.4V TX levels (10BASE-T1L)
89 		phydev->master_slave_state = MASTER_SLAVE_STATE_SLAVE;  in adin_read_status()
92 		phydev->master_slave_state = MASTER_SLAVE_STATE_MASTER;  in adin_read_status()
99 	struct adin_priv *priv = phydev->priv;  in adin_config_aneg()
102 	if (phydev->autoneg == AUTONEG_DISABLE) {  in adin_config_aneg()
107 		if (priv->tx_level_prop_present && priv->tx_level_2v4)  in adin_config_aneg()
116 		/* Force PHY to use above configurations */  in adin_config_aneg()
125 	if (priv->tx_level_prop_present && priv->tx_level_2v4) {  in adin_config_aneg()
134 	if ((priv->tx_level_prop_present && !priv->tx_level_2v4) || !priv->tx_level_2v4_able) {  in adin_config_aneg()
163 	if (phydev->interrupts == PHY_INTERRUPT_ENABLED)  in adin_config_intr()
221 		return -EOPNOTSUPP;  in adin_set_loopback()
227 	/* PCS loopback (according to 10BASE-T1L spec) */  in adin_set_loopback()
247 	struct adin_priv *priv = phydev->priv;  in adin_get_features()
248 	struct device *dev = &phydev->mdio.dev;  in adin_get_features()
257 	priv->tx_level_2v4_able = !!(ret & MDIO_PMA_10T1L_STAT_2V4_ABLE);  in adin_get_features()
259 	phydev_dbg(phydev, "PHY supports 2.4V TX level: %s\n",  in adin_get_features()
260 		   priv->tx_level_2v4_able ? "yes" : "no");  in adin_get_features()
262 	priv->tx_level_prop_present = device_property_present(dev, "phy-10base-t1l-2.4vpp");  in adin_get_features()
263 	if (priv->tx_level_prop_present) {  in adin_get_features()
264 		ret = device_property_read_u8(dev, "phy-10base-t1l-2.4vpp", &val);  in adin_get_features()
268 		priv->tx_level_2v4 = val;  in adin_get_features()
269 		if (!priv->tx_level_2v4 && priv->tx_level_2v4_able)  in adin_get_features()
271 				    "PHY supports 2.4V TX level, but disabled via config\n");  in adin_get_features()
275 			       phydev->supported);  in adin_get_features()
302 	return -EINVAL;  in adin_get_sqi()
312 	struct device *dev = &phydev->mdio.dev;  in adin_probe()
317 		return -ENOMEM;  in adin_probe()
319 	phydev->priv = priv;  in adin_probe()
354 MODULE_DESCRIPTION("Analog Devices Industrial Ethernet T1L PHY driver");