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