drivers/net/phy/aquantia.c

   1 /*
   2  * Driver for Aquantia PHY
   3  *
   4  * Author: Shaohui Xie <Shaohui.Xie@freescale.com>
   5  *
   6  * Copyright 2015 Freescale Semiconductor, Inc.
   7  *
   8  * This file is licensed under the terms of the GNU General Public License
   9  * version 2.  This program is licensed "as is" without any warranty of any
  10  * kind, whether express or implied.
  11  */
  12
  13 #include <linux/kernel.h>
  14 #include <linux/module.h>
  15 #include <linux/delay.h>
  16 #include <linux/mii.h>
  17 #include <linux/ethtool.h>
  18 #include <linux/phy.h>
  19 #include <linux/mdio.h>
  20
  21 #define PHY_ID_AQ1202   0x03a1b445
  22 #define PHY_ID_AQ2104   0x03a1b460
  23 #define PHY_ID_AQR105   0x03a1b4a2
  24 #define PHY_ID_AQR106   0x03a1b4d0
  25 #define PHY_ID_AQR107   0x03a1b4e0
  26 #define PHY_ID_AQR405   0x03a1b4b0
  27
  28 #define PHY_AQUANTIA_FEATURES   (SUPPORTED_10000baseT_Full | \
  29                                  SUPPORTED_1000baseT_Full | \
  30                                  SUPPORTED_100baseT_Full | \
  31                                  PHY_DEFAULT_FEATURES)
  32
  33 static int aquantia_config_aneg(struct phy_device *phydev)
  34 {
  35         phydev->supported = PHY_AQUANTIA_FEATURES;
  36         phydev->advertising = phydev->supported;
  37
  38         return 0;
  39 }
  40
  41 static int aquantia_config_intr(struct phy_device *phydev)
  42 {
  43         int err;
  44
  45         if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
  46                 err = phy_write_mmd(phydev, MDIO_MMD_AN, 0xd401, 1);
  47                 if (err < 0)
  48                         return err;
  49
  50                 err = phy_write_mmd(phydev, MDIO_MMD_VEND1, 0xff00, 1);
  51                 if (err < 0)
  52                         return err;
  53
  54                 err = phy_write_mmd(phydev, MDIO_MMD_VEND1, 0xff01, 0x1001);
  55         } else {
  56                 err = phy_write_mmd(phydev, MDIO_MMD_AN, 0xd401, 0);
  57                 if (err < 0)
  58                         return err;
  59
  60                 err = phy_write_mmd(phydev, MDIO_MMD_VEND1, 0xff00, 0);
  61                 if (err < 0)
  62                         return err;
  63
  64                 err = phy_write_mmd(phydev, MDIO_MMD_VEND1, 0xff01, 0);
  65         }
  66
  67         return err;
  68 }
  69
  70 static int aquantia_ack_interrupt(struct phy_device *phydev)
  71 {
  72         int reg;
  73
  74         reg = phy_read_mmd(phydev, MDIO_MMD_AN, 0xcc01);
  75         return (reg < 0) ? reg : 0;
  76 }
  77
  78 static int aquantia_read_status(struct phy_device *phydev)
  79 {
  80         int reg;
  81
  82         reg = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_STAT1);
  83         reg = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_STAT1);
  84         if (reg & MDIO_STAT1_LSTATUS)
  85                 phydev->link = 1;
  86         else
  87                 phydev->link = 0;
  88
  89         reg = phy_read_mmd(phydev, MDIO_MMD_AN, 0xc800);
  90         mdelay(10);
  91         reg = phy_read_mmd(phydev, MDIO_MMD_AN, 0xc800);
  92
  93         switch (reg) {
  94         case 0x9:
  95                 phydev->speed = SPEED_2500;
  96                 break;
  97         case 0x5:
  98                 phydev->speed = SPEED_1000;
  99                 break;
 100         case 0x3:
 101                 phydev->speed = SPEED_100;
 102                 break;
 103         case 0x7:
 104         default:
 105                 phydev->speed = SPEED_10000;
 106                 break;
 107         }
 108         phydev->duplex = DUPLEX_FULL;
 109
 110         return 0;
 111 }
 112
 113 static struct phy_driver aquantia_driver[] = {
 114 {
 115         .phy_id         = PHY_ID_AQ1202,
 116         .phy_id_mask    = 0xfffffff0,
 117         .name           = "Aquantia AQ1202",
 118         .features       = PHY_AQUANTIA_FEATURES,
 119         .flags          = PHY_HAS_INTERRUPT,
 120         .aneg_done      = genphy_c45_aneg_done,
 121         .config_aneg    = aquantia_config_aneg,
 122         .config_intr    = aquantia_config_intr,
 123         .ack_interrupt  = aquantia_ack_interrupt,
 124         .read_status    = aquantia_read_status,
 125 },
 126 {
 127         .phy_id         = PHY_ID_AQ2104,
 128         .phy_id_mask    = 0xfffffff0,
 129         .name           = "Aquantia AQ2104",
 130         .features       = PHY_AQUANTIA_FEATURES,
 131         .flags          = PHY_HAS_INTERRUPT,
 132         .aneg_done      = genphy_c45_aneg_done,
 133         .config_aneg    = aquantia_config_aneg,
 134         .config_intr    = aquantia_config_intr,
 135         .ack_interrupt  = aquantia_ack_interrupt,
 136         .read_status    = aquantia_read_status,
 137 },
 138 {
 139         .phy_id         = PHY_ID_AQR105,
 140         .phy_id_mask    = 0xfffffff0,
 141         .name           = "Aquantia AQR105",
 142         .features       = PHY_AQUANTIA_FEATURES,
 143         .flags          = PHY_HAS_INTERRUPT,
 144         .aneg_done      = genphy_c45_aneg_done,
 145         .config_aneg    = aquantia_config_aneg,
 146         .config_intr    = aquantia_config_intr,
 147         .ack_interrupt  = aquantia_ack_interrupt,
 148         .read_status    = aquantia_read_status,
 149 },
 150 {
 151         .phy_id         = PHY_ID_AQR106,
 152         .phy_id_mask    = 0xfffffff0,
 153         .name           = "Aquantia AQR106",
 154         .features       = PHY_AQUANTIA_FEATURES,
 155         .flags          = PHY_HAS_INTERRUPT,
 156         .aneg_done      = genphy_c45_aneg_done,
 157         .config_aneg    = aquantia_config_aneg,
 158         .config_intr    = aquantia_config_intr,
 159         .ack_interrupt  = aquantia_ack_interrupt,
 160         .read_status    = aquantia_read_status,
 161 },
 162 {
 163         .phy_id         = PHY_ID_AQR107,
 164         .phy_id_mask    = 0xfffffff0,
 165         .name           = "Aquantia AQR107",
 166         .features       = PHY_AQUANTIA_FEATURES,
 167         .flags          = PHY_HAS_INTERRUPT,
 168         .aneg_done      = genphy_c45_aneg_done,
 169         .config_aneg    = aquantia_config_aneg,
 170         .config_intr    = aquantia_config_intr,
 171         .ack_interrupt  = aquantia_ack_interrupt,
 172         .read_status    = aquantia_read_status,
 173 },
 174 {
 175         .phy_id         = PHY_ID_AQR405,
 176         .phy_id_mask    = 0xfffffff0,
 177         .name           = "Aquantia AQR405",
 178         .features       = PHY_AQUANTIA_FEATURES,
 179         .flags          = PHY_HAS_INTERRUPT,
 180         .aneg_done      = genphy_c45_aneg_done,
 181         .config_aneg    = aquantia_config_aneg,
 182         .config_intr    = aquantia_config_intr,
 183         .ack_interrupt  = aquantia_ack_interrupt,
 184         .read_status    = aquantia_read_status,
 185 },
 186 };
 187
 188 module_phy_driver(aquantia_driver);
 189
 190 static struct mdio_device_id __maybe_unused aquantia_tbl[] = {
 191         { PHY_ID_AQ1202, 0xfffffff0 },
 192         { PHY_ID_AQ2104, 0xfffffff0 },
 193         { PHY_ID_AQR105, 0xfffffff0 },
 194         { PHY_ID_AQR106, 0xfffffff0 },
 195         { PHY_ID_AQR107, 0xfffffff0 },
 196         { PHY_ID_AQR405, 0xfffffff0 },
 197         { }
 198 };
 199
 200 MODULE_DEVICE_TABLE(mdio, aquantia_tbl);
 201
 202 MODULE_DESCRIPTION("Aquantia PHY driver");
 203 MODULE_AUTHOR("Shaohui Xie <Shaohui.Xie@freescale.com>");
 204 MODULE_LICENSE("GPL v2");