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@smsc.com
  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
  26 #define MII_LAN83C185_ISF 29 /* Interrupt Source Flags */
  27 #define MII_LAN83C185_IM  30 /* Interrupt Mask */
  28
  29 #define MII_LAN83C185_ISF_INT1 (1<<1) /* Auto-Negotiation Page Received */
  30 #define MII_LAN83C185_ISF_INT2 (1<<2) /* Parallel Detection Fault */
  31 #define MII_LAN83C185_ISF_INT3 (1<<3) /* Auto-Negotiation LP Ack */
  32 #define MII_LAN83C185_ISF_INT4 (1<<4) /* Link Down */
  33 #define MII_LAN83C185_ISF_INT5 (1<<5) /* Remote Fault Detected */
  34 #define MII_LAN83C185_ISF_INT6 (1<<6) /* Auto-Negotiation complete */
  35 #define MII_LAN83C185_ISF_INT7 (1<<7) /* ENERGYON */
  36
  37 #define MII_LAN83C185_ISF_INT_ALL (0x0e)
  38
  39 #define MII_LAN83C185_ISF_INT_PHYLIB_EVENTS \
  40         (MII_LAN83C185_ISF_INT6 | MII_LAN83C185_ISF_INT4)
  41
  42
  43 static int smsc_phy_config_intr(struct phy_device *phydev)
  44 {
  45         int rc = phy_write (phydev, MII_LAN83C185_IM,
  46                         ((PHY_INTERRUPT_ENABLED == phydev->interrupts)
  47                         ? MII_LAN83C185_ISF_INT_PHYLIB_EVENTS
  48                         : 0));
  49
  50         return rc < 0 ? rc : 0;
  51 }
  52
  53 static int smsc_phy_ack_interrupt(struct phy_device *phydev)
  54 {
  55         int rc = phy_read (phydev, MII_LAN83C185_ISF);
  56
  57         return rc < 0 ? rc : 0;
  58 }
  59
  60 static int smsc_phy_config_init(struct phy_device *phydev)
  61 {
  62         return smsc_phy_ack_interrupt (phydev);
  63 }
  64
  65
  66 static struct phy_driver lan83c185_driver = {
  67         .phy_id         = 0x0007c0a0, /* OUI=0x00800f, Model#=0x0a */
  68         .phy_id_mask    = 0xfffffff0,
  69         .name           = "SMSC LAN83C185",
  70
  71         .features       = (PHY_BASIC_FEATURES | SUPPORTED_Pause
  72                                 | SUPPORTED_Asym_Pause),
  73         .flags          = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
  74
  75         /* basic functions */
  76         .config_aneg    = genphy_config_aneg,
  77         .read_status    = genphy_read_status,
  78         .config_init    = smsc_phy_config_init,
  79
  80         /* IRQ related */
  81         .ack_interrupt  = smsc_phy_ack_interrupt,
  82         .config_intr    = smsc_phy_config_intr,
  83
  84         .driver         = { .owner = THIS_MODULE, }
  85 };
  86
  87 static struct phy_driver lan8187_driver = {
  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         .driver         = { .owner = THIS_MODULE, }
 106 };
 107
 108 static struct phy_driver lan8700_driver = {
 109         .phy_id         = 0x0007c0c0, /* OUI=0x00800f, Model#=0x0c */
 110         .phy_id_mask    = 0xfffffff0,
 111         .name           = "SMSC LAN8700",
 112
 113         .features       = (PHY_BASIC_FEATURES | SUPPORTED_Pause
 114                                 | SUPPORTED_Asym_Pause),
 115         .flags          = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
 116
 117         /* basic functions */
 118         .config_aneg    = genphy_config_aneg,
 119         .read_status    = genphy_read_status,
 120         .config_init    = smsc_phy_config_init,
 121
 122         /* IRQ related */
 123         .ack_interrupt  = smsc_phy_ack_interrupt,
 124         .config_intr    = smsc_phy_config_intr,
 125
 126         .driver         = { .owner = THIS_MODULE, }
 127 };
 128
 129 static int __init smsc_init(void)
 130 {
 131         int ret;
 132
 133         ret = phy_driver_register (&lan83c185_driver);
 134         if (ret)
 135                 goto err1;
 136
 137         ret = phy_driver_register (&lan8187_driver);
 138         if (ret)
 139                 goto err2;
 140
 141         ret = phy_driver_register (&lan8700_driver);
 142         if (ret)
 143                 goto err3;
 144
 145         return 0;
 146
 147 err3:
 148         phy_driver_unregister (&lan8187_driver);
 149 err2:
 150         phy_driver_unregister (&lan83c185_driver);
 151 err1:
 152         return ret;
 153 }
 154
 155 static void __exit smsc_exit(void)
 156 {
 157         phy_driver_unregister (&lan8700_driver);
 158         phy_driver_unregister (&lan8187_driver);
 159         phy_driver_unregister (&lan83c185_driver);
 160 }
 161
 162 MODULE_DESCRIPTION("SMSC PHY driver");
 163 MODULE_AUTHOR("Herbert Valerio Riedel");
 164 MODULE_LICENSE("GPL");
 165
 166 module_init(smsc_init);
 167 module_exit(smsc_exit);