drivers/net/phy/aquantia.c

   1 /*
   2  * Driver for Aquantia PHY
   3  *
   4  * Author: Shaohui Xie <[email protected]>
   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_aneg_done(struct phy_device *phydev)
  42 {
  43         int reg;
  44
  45         reg = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_STAT1);
  46         return (reg < 0) ? reg : (reg & BMSR_ANEGCOMPLETE);
  47 }
  48
  49 static int aquantia_config_intr(struct phy_device *phydev)
  50 {
  51         int err;
  52
  53         if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
  54                 err = phy_write_mmd(phydev, MDIO_MMD_AN, 0xd401, 1);
  55                 if (err < 0)
  56                         return err;
  57
  58                 err = phy_write_mmd(phydev, MDIO_MMD_VEND1, 0xff00, 1);
  59                 if (err < 0)
  60                         return err;
  61
  62                 err = phy_write_mmd(phydev, MDIO_MMD_VEND1, 0xff01, 0x1001);
  63         } else {
  64                 err = phy_write_mmd(phydev, MDIO_MMD_AN, 0xd401, 0);
  65                 if (err < 0)
  66                         return err;
  67
  68                 err = phy_write_mmd(phydev, MDIO_MMD_VEND1, 0xff00, 0);
  69                 if (err < 0)
  70                         return err;
  71
  72                 err = phy_write_mmd(phydev, MDIO_MMD_VEND1, 0xff01, 0);
  73         }
  74
  75         return err;
  76 }
  77
  78 static int aquantia_ack_interrupt(struct phy_device *phydev)
  79 {
  80         int reg;
  81
  82         reg = phy_read_mmd(phydev, MDIO_MMD_AN, 0xcc01);
  83         return (reg < 0) ? reg : 0;
  84 }
  85
  86 static int aquantia_read_status(struct phy_device *phydev)
  87 {
  88         int reg;
  89
  90         reg = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_STAT1);
  91         reg = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_STAT1);
  92         if (reg & MDIO_STAT1_LSTATUS)
  93                 phydev->link = 1;
  94         else
  95                 phydev->link = 0;
  96
  97         reg = phy_read_mmd(phydev, MDIO_MMD_AN, 0xc800);
  98         mdelay(10);
  99         reg = phy_read_mmd(phydev, MDIO_MMD_AN, 0xc800);
 100
 101         switch (reg) {
 102         case 0x9:
 103                 phydev->speed = SPEED_2500;
 104                 break;
 105         case 0x5:
 106                 phydev->speed = SPEED_1000;
 107                 break;
 108         case 0x3:
 109                 phydev->speed = SPEED_100;
 110                 break;
 111         case 0x7:
 112         default:
 113                 phydev->speed = SPEED_10000;
 114                 break;
 115         }
 116         phydev->duplex = DUPLEX_FULL;
 117
 118         return 0;
 119 }
 120
 121 static struct phy_driver aquantia_driver[] = {
 122 {
 123         .phy_id         = PHY_ID_AQ1202,
 124         .phy_id_mask    = 0xfffffff0,
 125         .name           = "Aquantia AQ1202",
 126         .features       = PHY_AQUANTIA_FEATURES,
 127         .flags          = PHY_HAS_INTERRUPT,
 128         .aneg_done      = aquantia_aneg_done,
 129         .config_aneg    = aquantia_config_aneg,
 130         .config_intr    = aquantia_config_intr,
 131         .ack_interrupt  = aquantia_ack_interrupt,
 132         .read_status    = aquantia_read_status,
 133 },
 134 {
 135         .phy_id         = PHY_ID_AQ2104,
 136         .phy_id_mask    = 0xfffffff0,
 137         .name           = "Aquantia AQ2104",
 138         .features       = PHY_AQUANTIA_FEATURES,
 139         .flags          = PHY_HAS_INTERRUPT,
 140         .aneg_done      = aquantia_aneg_done,
 141         .config_aneg    = aquantia_config_aneg,
 142         .config_intr    = aquantia_config_intr,
 143         .ack_interrupt  = aquantia_ack_interrupt,
 144         .read_status    = aquantia_read_status,
 145 },
 146 {
 147         .phy_id         = PHY_ID_AQR105,
 148         .phy_id_mask    = 0xfffffff0,
 149         .name           = "Aquantia AQR105",
 150         .features       = PHY_AQUANTIA_FEATURES,
 151         .flags          = PHY_HAS_INTERRUPT,
 152         .aneg_done      = aquantia_aneg_done,
 153         .config_aneg    = aquantia_config_aneg,
 154         .config_intr    = aquantia_config_intr,
 155         .ack_interrupt  = aquantia_ack_interrupt,
 156         .read_status    = aquantia_read_status,
 157 },
 158 {
 159         .phy_id         = PHY_ID_AQR106,
 160         .phy_id_mask    = 0xfffffff0,
 161         .name           = "Aquantia AQR106",
 162         .features       = PHY_AQUANTIA_FEATURES,
 163         .flags          = PHY_HAS_INTERRUPT,
 164         .aneg_done      = aquantia_aneg_done,
 165         .config_aneg    = aquantia_config_aneg,
 166         .config_intr    = aquantia_config_intr,
 167         .ack_interrupt  = aquantia_ack_interrupt,
 168         .read_status    = aquantia_read_status,
 169 },
 170 {
 171         .phy_id         = PHY_ID_AQR107,
 172         .phy_id_mask    = 0xfffffff0,
 173         .name           = "Aquantia AQR107",
 174         .features       = PHY_AQUANTIA_FEATURES,
 175         .flags          = PHY_HAS_INTERRUPT,
 176         .aneg_done      = aquantia_aneg_done,
 177         .config_aneg    = aquantia_config_aneg,
 178         .config_intr    = aquantia_config_intr,
 179         .ack_interrupt  = aquantia_ack_interrupt,
 180         .read_status    = aquantia_read_status,
 181 },
 182 {
 183         .phy_id         = PHY_ID_AQR405,
 184         .phy_id_mask    = 0xfffffff0,
 185         .name           = "Aquantia AQR405",
 186         .features       = PHY_AQUANTIA_FEATURES,
 187         .flags          = PHY_HAS_INTERRUPT,
 188         .aneg_done      = aquantia_aneg_done,
 189         .config_aneg    = aquantia_config_aneg,
 190         .config_intr    = aquantia_config_intr,
 191         .ack_interrupt  = aquantia_ack_interrupt,
 192         .read_status    = aquantia_read_status,
 193 },
 194 };
 195
 196 module_phy_driver(aquantia_driver);
 197
 198 static struct mdio_device_id __maybe_unused aquantia_tbl[] = {
 199         { PHY_ID_AQ1202, 0xfffffff0 },
 200         { PHY_ID_AQ2104, 0xfffffff0 },
 201         { PHY_ID_AQR105, 0xfffffff0 },
 202         { PHY_ID_AQR106, 0xfffffff0 },
 203         { PHY_ID_AQR107, 0xfffffff0 },
 204         { PHY_ID_AQR405, 0xfffffff0 },
 205         { }
 206 };
 207
 208 MODULE_DEVICE_TABLE(mdio, aquantia_tbl);
 209
 210 MODULE_DESCRIPTION("Aquantia PHY driver");
 211 MODULE_AUTHOR("Shaohui Xie <[email protected]>");
 212 MODULE_LICENSE("GPL v2");