phy: add smsc phy driver support
as we to have specific phy init to fix chip issue link detection support based on linux 3.6 Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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@ -14,4 +14,9 @@ config GENERIC_PHY
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endif
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config SMSC_PHY
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bool "Drivers for SMSC PHYs"
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---help---
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Currently supports the LAN83C185, LAN8187 and LAN8700 PHYs
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endmenu
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@ -1,2 +1,3 @@
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obj-y += phy.o mdio_bus.o
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obj-$(CONFIG_GENERIC_PHY) += generic.o
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obj-$(CONFIG_SMSC_PHY) += smsc.o
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@ -0,0 +1,146 @@
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/*
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* drivers/net/phy/smsc.c
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*
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* Driver for SMSC PHYs
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*
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* Author: Herbert Valerio Riedel
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*
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* Copyright (c) 2006 Herbert Valerio Riedel <hvr@gnu.org>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* Support added for SMSC LAN8187 and LAN8700 by steve.glendinning@shawell.net
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*
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*/
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#include <common.h>
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#include <init.h>
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#include <linux/mii.h>
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#include <linux/ethtool.h>
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#include <linux/phy.h>
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#include <linux/smscphy.h>
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static int smsc_phy_ack_interrupt(struct phy_device *phydev)
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{
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int rc = phy_read (phydev, MII_LAN83C185_ISF);
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return rc < 0 ? rc : 0;
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}
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static int smsc_phy_config_init(struct phy_device *phydev)
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{
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int rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS);
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if (rc < 0)
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return rc;
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/* Enable energy detect mode for this SMSC Transceivers */
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rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS,
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rc | MII_LAN83C185_EDPWRDOWN);
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if (rc < 0)
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return rc;
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return smsc_phy_ack_interrupt (phydev);
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}
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static int lan87xx_config_init(struct phy_device *phydev)
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{
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/*
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* Make sure the EDPWRDOWN bit is NOT set. Setting this bit on
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* LAN8710/LAN8720 PHY causes the PHY to misbehave, likely due
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* to a bug on the chip.
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*
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* When the system is powered on with the network cable being
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* disconnected all the way until after ifconfig ethX up is
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* issued for the LAN port with this PHY, connecting the cable
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* afterwards does not cause LINK change detection, while the
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* expected behavior is the Link UP being detected.
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*/
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int rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS);
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if (rc < 0)
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return rc;
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rc &= ~MII_LAN83C185_EDPWRDOWN;
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rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS, rc);
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if (rc < 0)
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return rc;
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return smsc_phy_ack_interrupt(phydev);
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}
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static int lan911x_config_init(struct phy_device *phydev)
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{
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return smsc_phy_ack_interrupt(phydev);
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}
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static struct phy_driver smsc_phy_driver[] = {
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{
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.phy_id = 0x0007c0a0, /* OUI=0x00800f, Model#=0x0a */
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.phy_id_mask = 0xfffffff0,
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.drv.name = "SMSC LAN83C185",
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.features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
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| SUPPORTED_Asym_Pause),
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/* basic functions */
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.config_aneg = genphy_config_aneg,
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.read_status = genphy_read_status,
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.config_init = smsc_phy_config_init,
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}, {
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.phy_id = 0x0007c0b0, /* OUI=0x00800f, Model#=0x0b */
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.phy_id_mask = 0xfffffff0,
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.drv.name = "SMSC LAN8187",
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.features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
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| SUPPORTED_Asym_Pause),
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/* basic functions */
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.config_aneg = genphy_config_aneg,
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.read_status = genphy_read_status,
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.config_init = smsc_phy_config_init,
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}, {
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.phy_id = 0x0007c0c0, /* OUI=0x00800f, Model#=0x0c */
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.phy_id_mask = 0xfffffff0,
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.drv.name = "SMSC LAN8700",
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.features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
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| SUPPORTED_Asym_Pause),
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/* basic functions */
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.config_aneg = genphy_config_aneg,
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.read_status = genphy_read_status,
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.config_init = smsc_phy_config_init,
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}, {
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.phy_id = 0x0007c0d0, /* OUI=0x00800f, Model#=0x0d */
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.phy_id_mask = 0xfffffff0,
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.drv.name = "SMSC LAN911x Internal PHY",
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.features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
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| SUPPORTED_Asym_Pause),
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/* basic functions */
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.config_aneg = genphy_config_aneg,
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.read_status = genphy_read_status,
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.config_init = lan911x_config_init,
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}, {
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.phy_id = 0x0007c0f0, /* OUI=0x00800f, Model#=0x0f */
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.phy_id_mask = 0xfffffff0,
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.drv.name = "SMSC LAN8710/LAN8720",
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.features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
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| SUPPORTED_Asym_Pause),
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/* basic functions */
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.config_aneg = genphy_config_aneg,
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.read_status = genphy_read_status,
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.config_init = lan87xx_config_init,
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} };
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static int __init smsc_init(void)
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{
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return phy_drivers_register(smsc_phy_driver, ARRAY_SIZE(smsc_phy_driver));
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}
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fs_initcall(smsc_init);
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@ -0,0 +1,25 @@
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#ifndef __LINUX_SMSCPHY_H__
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#define __LINUX_SMSCPHY_H__
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#define MII_LAN83C185_ISF 29 /* Interrupt Source Flags */
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#define MII_LAN83C185_IM 30 /* Interrupt Mask */
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#define MII_LAN83C185_CTRL_STATUS 17 /* Mode/Status Register */
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#define MII_LAN83C185_ISF_INT1 (1<<1) /* Auto-Negotiation Page Received */
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#define MII_LAN83C185_ISF_INT2 (1<<2) /* Parallel Detection Fault */
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#define MII_LAN83C185_ISF_INT3 (1<<3) /* Auto-Negotiation LP Ack */
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#define MII_LAN83C185_ISF_INT4 (1<<4) /* Link Down */
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#define MII_LAN83C185_ISF_INT5 (1<<5) /* Remote Fault Detected */
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#define MII_LAN83C185_ISF_INT6 (1<<6) /* Auto-Negotiation complete */
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#define MII_LAN83C185_ISF_INT7 (1<<7) /* ENERGYON */
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#define MII_LAN83C185_ISF_INT_ALL (0x0e)
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#define MII_LAN83C185_ISF_INT_PHYLIB_EVENTS \
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(MII_LAN83C185_ISF_INT6 | MII_LAN83C185_ISF_INT4 | \
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MII_LAN83C185_ISF_INT7)
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#define MII_LAN83C185_EDPWRDOWN (1 << 13) /* EDPWRDOWN */
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#define MII_LAN83C185_ENERGYON (1 << 1) /* ENERGYON */
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#endif /* __LINUX_SMSCPHY_H__ */
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