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  */
  16
  17 #include <linux/kernel.h>
  18 #include <linux/module.h>
  19 #include <linux/mii.h>
  20 #include <linux/ethtool.h>
  21 #include <linux/phy.h>
  22 #include <linux/netdevice.h>
  23
  24 #define MII_LAN83C185_ISF 29 /* Interrupt Source Flags */
  25 #define MII_LAN83C185_IM  30 /* Interrupt Mask */
  26
  27 #define MII_LAN83C185_ISF_INT1 (1<<1) /* Auto-Negotiation Page Received */
  28 #define MII_LAN83C185_ISF_INT2 (1<<2) /* Parallel Detection Fault */
  29 #define MII_LAN83C185_ISF_INT3 (1<<3) /* Auto-Negotiation LP Ack */
  30 #define MII_LAN83C185_ISF_INT4 (1<<4) /* Link Down */
  31 #define MII_LAN83C185_ISF_INT5 (1<<5) /* Remote Fault Detected */
  32 #define MII_LAN83C185_ISF_INT6 (1<<6) /* Auto-Negotiation complete */
  33 #define MII_LAN83C185_ISF_INT7 (1<<7) /* ENERGYON */
  34
  35 #define MII_LAN83C185_ISF_INT_ALL (0x0e)
  36
  37 #define MII_LAN83C185_ISF_INT_PHYLIB_EVENTS \
  38         (MII_LAN83C185_ISF_INT6 | MII_LAN83C185_ISF_INT4)
  39
  40
  41 static int lan83c185_config_intr(struct phy_device *phydev)
  42 {
  43         int rc = phy_write (phydev, MII_LAN83C185_IM,
  44                         ((PHY_INTERRUPT_ENABLED == phydev->interrupts)
  45                         ? MII_LAN83C185_ISF_INT_PHYLIB_EVENTS
  46                         : 0));
  47
  48         return rc < 0 ? rc : 0;
  49 }
  50
  51 static int lan83c185_ack_interrupt(struct phy_device *phydev)
  52 {
  53         int rc = phy_read (phydev, MII_LAN83C185_ISF);
  54
  55         return rc < 0 ? rc : 0;
  56 }
  57
  58 static int lan83c185_config_init(struct phy_device *phydev)
  59 {
  60         return lan83c185_ack_interrupt (phydev);
  61 }
  62
  63
  64 static struct phy_driver lan83c185_driver = {
  65         .phy_id         = 0x0007c0a0, /* OUI=0x00800f, Model#=0x0a */
  66         .phy_id_mask    = 0xfffffff0,
  67         .name           = "SMSC LAN83C185",
  68
  69         .features       = (PHY_BASIC_FEATURES | SUPPORTED_Pause
  70                                 | SUPPORTED_Asym_Pause),
  71         .flags          = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
  72
  73         /* basic functions */
  74         .config_aneg    = genphy_config_aneg,
  75         .read_status    = genphy_read_status,
  76         .config_init    = lan83c185_config_init,
  77
  78         /* IRQ related */
  79         .ack_interrupt  = lan83c185_ack_interrupt,
  80         .config_intr    = lan83c185_config_intr,
  81
  82         .driver         = { .owner = THIS_MODULE, }
  83 };
  84
  85 static int __init smsc_init(void)
  86 {
  87         return phy_driver_register (&lan83c185_driver);
  88 }
  89
  90 static void __exit smsc_exit(void)
  91 {
  92         phy_driver_unregister (&lan83c185_driver);
  93 }
  94
  95 MODULE_DESCRIPTION("SMSC PHY driver");
  96 MODULE_AUTHOR("Herbert Valerio Riedel");
  97 MODULE_LICENSE("GPL");
  98
  99 module_init(smsc_init);
 100 module_exit(smsc_exit);