drivers/net/phy/smsc.c

   1 /*
   2  * drivers/net/phy/smsc.c
   3  *
   4  * Driver for SMSC PHYs
   5  *
   6  * Author: Herbert Valerio Riedel
   7  *
   8  * Copyright (c) 2006 Herbert Valerio Riedel <hvr@gnu.org>
   9  *
  10  * This program is free software; you can redistribute  it and/or modify it
  11  * under  the terms of  the GNU General  Public License as published by the
  12  * Free Software Foundation;  either version 2 of the  License, or (at your
  13  * option) any later version.
  14  *
  15  * Support added for SMSC LAN8187 and LAN8700 by steve.glendinning@shawell.net
  16  *
  17  */
  18
  19 #include <linux/kernel.h>
  20 #include <linux/module.h>
  21 #include <linux/mii.h>
  22 #include <linux/ethtool.h>
  23 #include <linux/phy.h>
  24 #include <linux/netdevice.h>
  25 #include <linux/smscphy.h>
  26
  27 static int smsc_phy_config_intr(struct phy_device *phydev)
  28 {
  29         int rc = phy_write (phydev, MII_LAN83C185_IM,
  30                         ((PHY_INTERRUPT_ENABLED == phydev->interrupts)
  31                         ? MII_LAN83C185_ISF_INT_PHYLIB_EVENTS
  32                         : 0));
  33
  34         return rc < 0 ? rc : 0;
  35 }
  36
  37 static int smsc_phy_ack_interrupt(struct phy_device *phydev)
  38 {
  39         int rc = phy_read (phydev, MII_LAN83C185_ISF);
  40
  41         return rc < 0 ? rc : 0;
  42 }
  43
  44 static int smsc_phy_config_init(struct phy_device *phydev)
  45 {
  46         int rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS);
  47         if (rc < 0)
  48                 return rc;
  49
  50         /* Enable energy detect mode for this SMSC Transceivers */
  51         rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS,
  52                        rc | MII_LAN83C185_EDPWRDOWN);
  53         if (rc < 0)
  54                 return rc;
  55
  56         return smsc_phy_ack_interrupt (phydev);
  57 }
  58
  59 static int lan911x_config_init(struct phy_device *phydev)
  60 {
  61         return smsc_phy_ack_interrupt(phydev);
  62 }
  63
  64 static struct phy_driver smsc_phy_driver[] = {
  65 {
  66         .phy_id         = 0x0007c0a0, /* OUI=0x00800f, Model#=0x0a */
  67         .phy_id_mask    = 0xfffffff0,
  68         .name           = "SMSC LAN83C185",
  69
  70         .features       = (PHY_BASIC_FEATURES | SUPPORTED_Pause
  71                                 | SUPPORTED_Asym_Pause),
  72         .flags          = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
  73
  74         /* basic functions */
  75         .config_aneg    = genphy_config_aneg,
  76         .read_status    = genphy_read_status,
  77         .config_init    = smsc_phy_config_init,
  78
  79         /* IRQ related */
  80         .ack_interrupt  = smsc_phy_ack_interrupt,
  81         .config_intr    = smsc_phy_config_intr,
  82
  83         .suspend        = genphy_suspend,
  84         .resume         = genphy_resume,
  85
  86         .driver         = { .owner = THIS_MODULE, }
  87 }, {
  88         .phy_id         = 0x0007c0b0, /* OUI=0x00800f, Model#=0x0b */
  89         .phy_id_mask    = 0xfffffff0,
  90         .name           = "SMSC LAN8187",
  91
  92         .features       = (PHY_BASIC_FEATURES | SUPPORTED_Pause
  93                                 | SUPPORTED_Asym_Pause),
  94         .flags          = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
  95
  96         /* basic functions */
  97         .config_aneg    = genphy_config_aneg,
  98         .read_status    = genphy_read_status,
  99         .config_init    = smsc_phy_config_init,
 100
 101         /* IRQ related */
 102         .ack_interrupt  = smsc_phy_ack_interrupt,
 103         .config_intr    = smsc_phy_config_intr,
 104
 105         .suspend        = genphy_suspend,
 106         .resume         = genphy_resume,
 107
 108         .driver         = { .owner = THIS_MODULE, }
 109 }, {
 110         .phy_id         = 0x0007c0c0, /* OUI=0x00800f, Model#=0x0c */
 111         .phy_id_mask    = 0xfffffff0,
 112         .name           = "SMSC LAN8700",
 113
 114         .features       = (PHY_BASIC_FEATURES | SUPPORTED_Pause
 115                                 | SUPPORTED_Asym_Pause),
 116         .flags          = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
 117
 118         /* basic functions */
 119         .config_aneg    = genphy_config_aneg,
 120         .read_status    = genphy_read_status,
 121         .config_init    = smsc_phy_config_init,
 122
 123         /* IRQ related */
 124         .ack_interrupt  = smsc_phy_ack_interrupt,
 125         .config_intr    = smsc_phy_config_intr,
 126
 127         .suspend        = genphy_suspend,
 128         .resume         = genphy_resume,
 129
 130         .driver         = { .owner = THIS_MODULE, }
 131 }, {
 132         .phy_id         = 0x0007c0d0, /* OUI=0x00800f, Model#=0x0d */
 133         .phy_id_mask    = 0xfffffff0,
 134         .name           = "SMSC LAN911x Internal PHY",
 135
 136         .features       = (PHY_BASIC_FEATURES | SUPPORTED_Pause
 137                                 | SUPPORTED_Asym_Pause),
 138         .flags          = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
 139
 140         /* basic functions */
 141         .config_aneg    = genphy_config_aneg,
 142         .read_status    = genphy_read_status,
 143         .config_init    = lan911x_config_init,
 144
 145         /* IRQ related */
 146         .ack_interrupt  = smsc_phy_ack_interrupt,
 147         .config_intr    = smsc_phy_config_intr,
 148
 149         .suspend        = genphy_suspend,
 150         .resume         = genphy_resume,
 151
 152         .driver         = { .owner = THIS_MODULE, }
 153 }, {
 154         .phy_id         = 0x0007c0f0, /* OUI=0x00800f, Model#=0x0f */
 155         .phy_id_mask    = 0xfffffff0,
 156         .name           = "SMSC LAN8710/LAN8720",
 157
 158         .features       = (PHY_BASIC_FEATURES | SUPPORTED_Pause
 159                                 | SUPPORTED_Asym_Pause),
 160         .flags          = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
 161
 162         /* basic functions */
 163         .config_aneg    = genphy_config_aneg,
 164         .read_status    = genphy_read_status,
 165         .config_init    = smsc_phy_config_init,
 166
 167         /* IRQ related */
 168         .ack_interrupt  = smsc_phy_ack_interrupt,
 169         .config_intr    = smsc_phy_config_intr,
 170
 171         .suspend        = genphy_suspend,
 172         .resume         = genphy_resume,
 173
 174         .driver         = { .owner = THIS_MODULE, }
 175 } };
 176
 177 static int __init smsc_init(void)
 178 {
 179         return phy_drivers_register(smsc_phy_driver,
 180                 ARRAY_SIZE(smsc_phy_driver));
 181 }
 182
 183 static void __exit smsc_exit(void)
 184 {
 185         return phy_drivers_unregister(smsc_phy_driver,
 186                 ARRAY_SIZE(smsc_phy_driver));
 187 }
 188
 189 MODULE_DESCRIPTION("SMSC PHY driver");
 190 MODULE_AUTHOR("Herbert Valerio Riedel");
 191 MODULE_LICENSE("GPL");
 192
 193 module_init(smsc_init);
 194 module_exit(smsc_exit);
 195
 196 static struct mdio_device_id __maybe_unused smsc_tbl[] = {
 197         { 0x0007c0a0, 0xfffffff0 },
 198         { 0x0007c0b0, 0xfffffff0 },
 199         { 0x0007c0c0, 0xfffffff0 },
 200         { 0x0007c0d0, 0xfffffff0 },
 201         { 0x0007c0f0, 0xfffffff0 },
 202         { }
 203 };
 204
 205 MODULE_DEVICE_TABLE(mdio, smsc_tbl);