Shaohui Xie | bee8259 | 2015-07-31 16:58:42 +0800 | [diff] [blame] | 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_AQR405 0x03a1b4b0 |
| 25 | |
| 26 | #define PHY_AQUANTIA_FEATURES (SUPPORTED_10000baseT_Full | \ |
| 27 | SUPPORTED_1000baseT_Full | \ |
| 28 | SUPPORTED_100baseT_Full | \ |
| 29 | PHY_DEFAULT_FEATURES) |
| 30 | |
| 31 | static int aquantia_config_aneg(struct phy_device *phydev) |
| 32 | { |
| 33 | phydev->supported = PHY_AQUANTIA_FEATURES; |
| 34 | phydev->advertising = phydev->supported; |
| 35 | |
| 36 | return 0; |
| 37 | } |
| 38 | |
| 39 | static int aquantia_aneg_done(struct phy_device *phydev) |
| 40 | { |
| 41 | int reg; |
| 42 | |
| 43 | reg = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_STAT1); |
| 44 | return (reg < 0) ? reg : (reg & BMSR_ANEGCOMPLETE); |
| 45 | } |
| 46 | |
| 47 | static int aquantia_read_status(struct phy_device *phydev) |
| 48 | { |
| 49 | int reg; |
| 50 | |
| 51 | reg = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_STAT1); |
| 52 | reg = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_STAT1); |
| 53 | if (reg & MDIO_STAT1_LSTATUS) |
| 54 | phydev->link = 1; |
| 55 | else |
| 56 | phydev->link = 0; |
| 57 | |
| 58 | reg = phy_read_mmd(phydev, MDIO_MMD_AN, 0xc800); |
| 59 | mdelay(10); |
| 60 | reg = phy_read_mmd(phydev, MDIO_MMD_AN, 0xc800); |
| 61 | |
| 62 | switch (reg) { |
| 63 | case 0x9: |
| 64 | phydev->speed = SPEED_2500; |
| 65 | break; |
| 66 | case 0x5: |
| 67 | phydev->speed = SPEED_1000; |
| 68 | break; |
| 69 | case 0x3: |
| 70 | phydev->speed = SPEED_100; |
| 71 | break; |
| 72 | case 0x7: |
| 73 | default: |
| 74 | phydev->speed = SPEED_10000; |
| 75 | break; |
| 76 | } |
| 77 | phydev->duplex = DUPLEX_FULL; |
| 78 | |
| 79 | return 0; |
| 80 | } |
| 81 | |
| 82 | static struct phy_driver aquantia_driver[] = { |
| 83 | { |
| 84 | .phy_id = PHY_ID_AQ1202, |
| 85 | .phy_id_mask = 0xfffffff0, |
| 86 | .name = "Aquantia AQ1202", |
| 87 | .features = PHY_AQUANTIA_FEATURES, |
| 88 | .aneg_done = aquantia_aneg_done, |
| 89 | .config_aneg = aquantia_config_aneg, |
| 90 | .read_status = aquantia_read_status, |
| 91 | .driver = { .owner = THIS_MODULE,}, |
| 92 | }, |
| 93 | { |
| 94 | .phy_id = PHY_ID_AQ2104, |
| 95 | .phy_id_mask = 0xfffffff0, |
| 96 | .name = "Aquantia AQ2104", |
| 97 | .features = PHY_AQUANTIA_FEATURES, |
| 98 | .aneg_done = aquantia_aneg_done, |
| 99 | .config_aneg = aquantia_config_aneg, |
| 100 | .read_status = aquantia_read_status, |
| 101 | .driver = { .owner = THIS_MODULE,}, |
| 102 | }, |
| 103 | { |
| 104 | .phy_id = PHY_ID_AQR105, |
| 105 | .phy_id_mask = 0xfffffff0, |
| 106 | .name = "Aquantia AQR105", |
| 107 | .features = PHY_AQUANTIA_FEATURES, |
| 108 | .aneg_done = aquantia_aneg_done, |
| 109 | .config_aneg = aquantia_config_aneg, |
| 110 | .read_status = aquantia_read_status, |
| 111 | .driver = { .owner = THIS_MODULE,}, |
| 112 | }, |
| 113 | { |
| 114 | .phy_id = PHY_ID_AQR405, |
| 115 | .phy_id_mask = 0xfffffff0, |
| 116 | .name = "Aquantia AQR405", |
| 117 | .features = PHY_AQUANTIA_FEATURES, |
| 118 | .aneg_done = aquantia_aneg_done, |
| 119 | .config_aneg = aquantia_config_aneg, |
| 120 | .read_status = aquantia_read_status, |
| 121 | .driver = { .owner = THIS_MODULE,}, |
| 122 | }, |
| 123 | }; |
| 124 | |
| 125 | static int __init aquantia_init(void) |
| 126 | { |
| 127 | return phy_drivers_register(aquantia_driver, |
| 128 | ARRAY_SIZE(aquantia_driver)); |
| 129 | } |
| 130 | |
| 131 | static void __exit aquantia_exit(void) |
| 132 | { |
| 133 | return phy_drivers_unregister(aquantia_driver, |
| 134 | ARRAY_SIZE(aquantia_driver)); |
| 135 | } |
| 136 | |
| 137 | module_init(aquantia_init); |
| 138 | module_exit(aquantia_exit); |
| 139 | |
| 140 | static struct mdio_device_id __maybe_unused aquantia_tbl[] = { |
| 141 | { PHY_ID_AQ1202, 0xfffffff0 }, |
| 142 | { PHY_ID_AQ2104, 0xfffffff0 }, |
| 143 | { PHY_ID_AQR105, 0xfffffff0 }, |
| 144 | { PHY_ID_AQR405, 0xfffffff0 }, |
| 145 | { } |
| 146 | }; |
| 147 | |
| 148 | MODULE_DEVICE_TABLE(mdio, aquantia_tbl); |
| 149 | |
| 150 | MODULE_DESCRIPTION("Aquantia PHY driver"); |
| 151 | MODULE_AUTHOR("Shaohui Xie <Shaohui.Xie@freescale.com>"); |
| 152 | MODULE_LICENSE("GPL v2"); |