kernel/drivers/net/phy/realtek.c

   1 /*
   2  * drivers/net/phy/realtek.c
   3  *
   4  * Driver for Realtek PHYs
   5  *
   6  * Author: Johnson Leung <r58129@freescale.com>
   7  *
   8  * Copyright (c) 2004 Freescale Semiconductor, Inc.
   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 #include <linux/phy.h>
  17 #include <linux/module.h>
  18
  19 #define RTL821x_PHYSR           0x11
  20 #define RTL821x_PHYSR_DUPLEX    0x2000
  21 #define RTL821x_PHYSR_SPEED     0xc000
  22 #define RTL821x_INER            0x12
  23 #define RTL821x_INER_INIT       0x6400
  24 #define RTL821x_INSR            0x13
  25
  26 #define RTL8211E_INER_LINK_STATUS       0x400
  27
  28 MODULE_DESCRIPTION("Realtek PHY driver");
  29 MODULE_AUTHOR("Johnson Leung");
  30 MODULE_LICENSE("GPL");
  31
  32 static int rtl821x_ack_interrupt(struct phy_device *phydev)
  33 {
  34         int err;
  35
  36         err = phy_read(phydev, RTL821x_INSR);
  37
  38         return (err < 0) ? err : 0;
  39 }
  40
  41 static int rtl8211b_config_intr(struct phy_device *phydev)
  42 {
  43         int err;
  44
  45         if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
  46                 err = phy_write(phydev, RTL821x_INER,
  47                                 RTL821x_INER_INIT);
  48         else
  49                 err = phy_write(phydev, RTL821x_INER, 0);
  50
  51         return err;
  52 }
  53
  54 static int rtl8211e_config_intr(struct phy_device *phydev)
  55 {
  56         int err;
  57
  58         if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
  59                 err = phy_write(phydev, RTL821x_INER,
  60                                 RTL8211E_INER_LINK_STATUS);
  61         else
  62                 err = phy_write(phydev, RTL821x_INER, 0);
  63
  64         return err;
  65 }
  66
  67 static struct phy_driver realtek_drvs[] = {
  68         {
  69                 .phy_id         = 0x00008201,
  70                 .name           = "RTL8201CP Ethernet",
  71                 .phy_id_mask    = 0x0000ffff,
  72                 .features       = PHY_BASIC_FEATURES,
  73                 .flags          = PHY_HAS_INTERRUPT,
  74                 .config_aneg    = &genphy_config_aneg,
  75                 .read_status    = &genphy_read_status,
  76                 .driver         = { .owner = THIS_MODULE,},
  77         }, {
  78                 .phy_id         = 0x001cc912,
  79                 .name           = "RTL8211B Gigabit Ethernet",
  80                 .phy_id_mask    = 0x001fffff,
  81                 .features       = PHY_GBIT_FEATURES,
  82                 .flags          = PHY_HAS_INTERRUPT,
  83                 .config_aneg    = &genphy_config_aneg,
  84                 .read_status    = &genphy_read_status,
  85                 .ack_interrupt  = &rtl821x_ack_interrupt,
  86                 .config_intr    = &rtl8211b_config_intr,
  87                 .driver         = { .owner = THIS_MODULE,},
  88         }, {
  89                 .phy_id         = 0x001cc915,
  90                 .name           = "RTL8211E Gigabit Ethernet",
  91                 .phy_id_mask    = 0x001fffff,
  92                 .features       = PHY_GBIT_FEATURES,
  93                 .flags          = PHY_HAS_INTERRUPT,
  94                 .config_aneg    = &genphy_config_aneg,
  95                 .read_status    = &genphy_read_status,
  96                 .ack_interrupt  = &rtl821x_ack_interrupt,
  97                 .config_intr    = &rtl8211e_config_intr,
  98                 .suspend        = genphy_suspend,
  99                 .resume         = genphy_resume,
 100                 .driver         = { .owner = THIS_MODULE,},
 101         },
 102 };
 103
 104 module_phy_driver(realtek_drvs);
 105
 106 static struct mdio_device_id __maybe_unused realtek_tbl[] = {
 107         { 0x001cc912, 0x001fffff },
 108         { 0x001cc915, 0x001fffff },
 109         { }
 110 };
 111
 112 MODULE_DEVICE_TABLE(mdio, realtek_tbl);