drivers/net/phy/smsc.c

   1 /*
   2  * SMSC PHY drivers
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  *
   6  * Base code from drivers/net/phy/davicom.c
   7  *   Copyright 2010-2011 Freescale Semiconductor, Inc.
   8  *   author Andy Fleming
   9  *
  10  * Some code copied from linux kernel
  11  * Copyright (c) 2006 Herbert Valerio Riedel <hvr@gnu.org>
  12  */
  13 #include <miiphy.h>
  14
  15 /* This code does not check the partner abilities. */
  16 static int smsc_parse_status(struct phy_device *phydev)
  17 {
  18         int mii_reg;
  19
  20         mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMSR);
  21
  22         if (mii_reg & (BMSR_100FULL | BMSR_100HALF))
  23                 phydev->speed = SPEED_100;
  24         else
  25                 phydev->speed = SPEED_10;
  26
  27         if (mii_reg & (BMSR_10FULL | BMSR_100FULL))
  28                 phydev->duplex = DUPLEX_FULL;
  29         else
  30                 phydev->duplex = DUPLEX_HALF;
  31
  32         return 0;
  33 }
  34
  35 static int smsc_startup(struct phy_device *phydev)
  36 {
  37         genphy_update_link(phydev);
  38         smsc_parse_status(phydev);
  39         return 0;
  40 }
  41
  42 static struct phy_driver lan8700_driver = {
  43         .name = "SMSC LAN8700",
  44         .uid = 0x0007c0c0,
  45         .mask = 0xffff0,
  46         .features = PHY_BASIC_FEATURES,
  47         .config = &genphy_config_aneg,
  48         .startup = &smsc_startup,
  49         .shutdown = &genphy_shutdown,
  50 };
  51
  52 static struct phy_driver lan911x_driver = {
  53         .name = "SMSC LAN911x Internal PHY",
  54         .uid = 0x0007c0d0,
  55         .mask = 0xffff0,
  56         .features = PHY_BASIC_FEATURES,
  57         .config = &genphy_config_aneg,
  58         .startup = &smsc_startup,
  59         .shutdown = &genphy_shutdown,
  60 };
  61
  62 static struct phy_driver lan8710_driver = {
  63         .name = "SMSC LAN8710/LAN8720",
  64         .uid = 0x0007c0f0,
  65         .mask = 0xffff0,
  66         .features = PHY_BASIC_FEATURES,
  67         .config = &genphy_config_aneg,
  68         .startup = &genphy_startup,
  69         .shutdown = &genphy_shutdown,
  70 };
  71
  72 int phy_smsc_init(void)
  73 {
  74         phy_register(&lan8710_driver);
  75         phy_register(&lan911x_driver);
  76         phy_register(&lan8700_driver);
  77
  78         return 0;
  79 }