698244ace8
SMSC Ethernet Transceivers (LAN88710, LAN8710, LAN8720, LAN8187, LAN8700, LAN83C185) provide a mechanism to conserve power when the device is not connected to an active link partner (Energy Detect Mode). So this patch enables the Energy Detect power-down mode for these Transceivers. Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
255 lines
6.4 KiB
C
255 lines
6.4 KiB
C
/*
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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@smsc.com
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*
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*/
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#include <linux/kernel.h>
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#include <linux/module.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/netdevice.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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static int smsc_phy_config_intr(struct phy_device *phydev)
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{
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int rc = phy_write (phydev, MII_LAN83C185_IM,
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((PHY_INTERRUPT_ENABLED == phydev->interrupts)
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? MII_LAN83C185_ISF_INT_PHYLIB_EVENTS
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: 0));
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return rc < 0 ? rc : 0;
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}
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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 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 lan83c185_driver = {
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.phy_id = 0x0007c0a0, /* OUI=0x00800f, Model#=0x0a */
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.phy_id_mask = 0xfffffff0,
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.name = "SMSC LAN83C185",
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.features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
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| SUPPORTED_Asym_Pause),
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.flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
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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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/* IRQ related */
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.ack_interrupt = smsc_phy_ack_interrupt,
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.config_intr = smsc_phy_config_intr,
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.suspend = genphy_suspend,
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.resume = genphy_resume,
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.driver = { .owner = THIS_MODULE, }
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};
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static struct phy_driver lan8187_driver = {
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.phy_id = 0x0007c0b0, /* OUI=0x00800f, Model#=0x0b */
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.phy_id_mask = 0xfffffff0,
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.name = "SMSC LAN8187",
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.features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
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| SUPPORTED_Asym_Pause),
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.flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
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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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/* IRQ related */
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.ack_interrupt = smsc_phy_ack_interrupt,
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.config_intr = smsc_phy_config_intr,
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.suspend = genphy_suspend,
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.resume = genphy_resume,
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.driver = { .owner = THIS_MODULE, }
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};
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static struct phy_driver lan8700_driver = {
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.phy_id = 0x0007c0c0, /* OUI=0x00800f, Model#=0x0c */
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.phy_id_mask = 0xfffffff0,
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.name = "SMSC LAN8700",
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.features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
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| SUPPORTED_Asym_Pause),
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.flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
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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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/* IRQ related */
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.ack_interrupt = smsc_phy_ack_interrupt,
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.config_intr = smsc_phy_config_intr,
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.suspend = genphy_suspend,
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.resume = genphy_resume,
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.driver = { .owner = THIS_MODULE, }
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};
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static struct phy_driver lan911x_int_driver = {
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.phy_id = 0x0007c0d0, /* OUI=0x00800f, Model#=0x0d */
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.phy_id_mask = 0xfffffff0,
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.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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.flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
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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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/* IRQ related */
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.ack_interrupt = smsc_phy_ack_interrupt,
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.config_intr = smsc_phy_config_intr,
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.suspend = genphy_suspend,
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.resume = genphy_resume,
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.driver = { .owner = THIS_MODULE, }
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};
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static struct phy_driver lan8710_driver = {
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.phy_id = 0x0007c0f0, /* OUI=0x00800f, Model#=0x0f */
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.phy_id_mask = 0xfffffff0,
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.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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.flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
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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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/* IRQ related */
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.ack_interrupt = smsc_phy_ack_interrupt,
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.config_intr = smsc_phy_config_intr,
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.suspend = genphy_suspend,
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.resume = genphy_resume,
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.driver = { .owner = THIS_MODULE, }
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};
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static int __init smsc_init(void)
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{
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int ret;
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ret = phy_driver_register (&lan83c185_driver);
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if (ret)
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goto err1;
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ret = phy_driver_register (&lan8187_driver);
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if (ret)
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goto err2;
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ret = phy_driver_register (&lan8700_driver);
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if (ret)
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goto err3;
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ret = phy_driver_register (&lan911x_int_driver);
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if (ret)
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goto err4;
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ret = phy_driver_register (&lan8710_driver);
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if (ret)
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goto err5;
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return 0;
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err5:
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phy_driver_unregister (&lan911x_int_driver);
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err4:
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phy_driver_unregister (&lan8700_driver);
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err3:
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phy_driver_unregister (&lan8187_driver);
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err2:
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phy_driver_unregister (&lan83c185_driver);
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err1:
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return ret;
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}
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static void __exit smsc_exit(void)
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{
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phy_driver_unregister (&lan8710_driver);
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phy_driver_unregister (&lan911x_int_driver);
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phy_driver_unregister (&lan8700_driver);
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phy_driver_unregister (&lan8187_driver);
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phy_driver_unregister (&lan83c185_driver);
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}
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MODULE_DESCRIPTION("SMSC PHY driver");
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MODULE_AUTHOR("Herbert Valerio Riedel");
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MODULE_LICENSE("GPL");
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module_init(smsc_init);
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module_exit(smsc_exit);
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