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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* drivers/net/phy/smsc.c
*
* Driver for SMSC PHYs
*
* Author: Herbert Valerio Riedel
*
* Copyright (c) 2006 Herbert Valerio Riedel <hvr@gnu.org>
*
* Support added for SMSC LAN8187 and LAN8700 by steve.glendinning@shawell.net
*
*/
#include <common.h>
#include <init.h>
#include <linux/mii.h>
#include <linux/ethtool.h>
#include <linux/phy.h>
#include <linux/smscphy.h>
static int smsc_phy_ack_interrupt(struct phy_device *phydev)
{
int rc = phy_read (phydev, MII_LAN83C185_ISF);
return rc < 0 ? rc : 0;
}
static int smsc_phy_config_init(struct phy_device *phydev)
{
int rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS);
if (rc < 0)
return rc;
/* Enable energy detect mode for this SMSC Transceivers */
rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS,
rc | MII_LAN83C185_EDPWRDOWN);
if (rc < 0)
return rc;
return smsc_phy_ack_interrupt (phydev);
}
static int lan87xx_config_init(struct phy_device *phydev)
{
/*
* Make sure the EDPWRDOWN bit is NOT set. Setting this bit on
* LAN8710/LAN8720 PHY causes the PHY to misbehave, likely due
* to a bug on the chip.
*
* When the system is powered on with the network cable being
* disconnected all the way until after ifconfig ethX up is
* issued for the LAN port with this PHY, connecting the cable
* afterwards does not cause LINK change detection, while the
* expected behavior is the Link UP being detected.
*/
int rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS);
if (rc < 0)
return rc;
rc &= ~MII_LAN83C185_EDPWRDOWN;
rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS, rc);
if (rc < 0)
return rc;
return smsc_phy_ack_interrupt(phydev);
}
static int lan911x_config_init(struct phy_device *phydev)
{
return smsc_phy_ack_interrupt(phydev);
}
static struct phy_driver smsc_phy_driver[] = {
{
.phy_id = 0x0007c0a0, /* OUI=0x00800f, Model#=0x0a */
.phy_id_mask = 0xfffffff0,
.drv.name = "SMSC LAN83C185",
.features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
| SUPPORTED_Asym_Pause),
/* basic functions */
.config_aneg = genphy_config_aneg,
.read_status = genphy_read_status,
.config_init = smsc_phy_config_init,
}, {
.phy_id = 0x0007c0b0, /* OUI=0x00800f, Model#=0x0b */
.phy_id_mask = 0xfffffff0,
.drv.name = "SMSC LAN8187",
.features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
| SUPPORTED_Asym_Pause),
/* basic functions */
.config_aneg = genphy_config_aneg,
.read_status = genphy_read_status,
.config_init = smsc_phy_config_init,
}, {
.phy_id = 0x0007c0c0, /* OUI=0x00800f, Model#=0x0c */
.phy_id_mask = 0xfffffff0,
.drv.name = "SMSC LAN8700",
.features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
| SUPPORTED_Asym_Pause),
/* basic functions */
.config_aneg = genphy_config_aneg,
.read_status = genphy_read_status,
.config_init = smsc_phy_config_init,
}, {
.phy_id = 0x0007c0d0, /* OUI=0x00800f, Model#=0x0d */
.phy_id_mask = 0xfffffff0,
.drv.name = "SMSC LAN911x Internal PHY",
.features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
| SUPPORTED_Asym_Pause),
/* basic functions */
.config_aneg = genphy_config_aneg,
.read_status = genphy_read_status,
.config_init = lan911x_config_init,
}, {
.phy_id = 0x0007c0f0, /* OUI=0x00800f, Model#=0x0f */
.phy_id_mask = 0xfffffff0,
.drv.name = "SMSC LAN8710/LAN8720",
.features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
| SUPPORTED_Asym_Pause),
/* basic functions */
.config_aneg = genphy_config_aneg,
.read_status = genphy_read_status,
.config_init = lan87xx_config_init,
} };
static int __init smsc_init(void)
{
return phy_drivers_register(smsc_phy_driver, ARRAY_SIZE(smsc_phy_driver));
}
fs_initcall(smsc_init);
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