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 | |
Shaohui Xie | 54cf7be | 2015-08-21 15:29:29 +0800 | [diff] [blame^] | 47 | static int aquantia_config_intr(struct phy_device *phydev) |
| 48 | { |
| 49 | int err; |
| 50 | |
| 51 | if (phydev->interrupts == PHY_INTERRUPT_ENABLED) { |
| 52 | err = phy_write_mmd(phydev, MDIO_MMD_AN, 0xd401, 1); |
| 53 | if (err < 0) |
| 54 | return err; |
| 55 | |
| 56 | err = phy_write_mmd(phydev, MDIO_MMD_VEND1, 0xff00, 1); |
| 57 | if (err < 0) |
| 58 | return err; |
| 59 | |
| 60 | err = phy_write_mmd(phydev, MDIO_MMD_VEND1, 0xff01, 0x1001); |
| 61 | } else { |
| 62 | err = phy_write_mmd(phydev, MDIO_MMD_AN, 0xd401, 0); |
| 63 | if (err < 0) |
| 64 | return err; |
| 65 | |
| 66 | err = phy_write_mmd(phydev, MDIO_MMD_VEND1, 0xff00, 0); |
| 67 | if (err < 0) |
| 68 | return err; |
| 69 | |
| 70 | err = phy_write_mmd(phydev, MDIO_MMD_VEND1, 0xff01, 0); |
| 71 | } |
| 72 | |
| 73 | return err; |
| 74 | } |
| 75 | |
| 76 | static int aquantia_ack_interrupt(struct phy_device *phydev) |
| 77 | { |
| 78 | int reg; |
| 79 | |
| 80 | reg = phy_read_mmd(phydev, MDIO_MMD_AN, 0xcc01); |
| 81 | return (reg < 0) ? reg : 0; |
| 82 | } |
| 83 | |
Shaohui Xie | bee8259 | 2015-07-31 16:58:42 +0800 | [diff] [blame] | 84 | static int aquantia_read_status(struct phy_device *phydev) |
| 85 | { |
| 86 | int reg; |
| 87 | |
| 88 | reg = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_STAT1); |
| 89 | reg = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_STAT1); |
| 90 | if (reg & MDIO_STAT1_LSTATUS) |
| 91 | phydev->link = 1; |
| 92 | else |
| 93 | phydev->link = 0; |
| 94 | |
| 95 | reg = phy_read_mmd(phydev, MDIO_MMD_AN, 0xc800); |
| 96 | mdelay(10); |
| 97 | reg = phy_read_mmd(phydev, MDIO_MMD_AN, 0xc800); |
| 98 | |
| 99 | switch (reg) { |
| 100 | case 0x9: |
| 101 | phydev->speed = SPEED_2500; |
| 102 | break; |
| 103 | case 0x5: |
| 104 | phydev->speed = SPEED_1000; |
| 105 | break; |
| 106 | case 0x3: |
| 107 | phydev->speed = SPEED_100; |
| 108 | break; |
| 109 | case 0x7: |
| 110 | default: |
| 111 | phydev->speed = SPEED_10000; |
| 112 | break; |
| 113 | } |
| 114 | phydev->duplex = DUPLEX_FULL; |
| 115 | |
| 116 | return 0; |
| 117 | } |
| 118 | |
| 119 | static struct phy_driver aquantia_driver[] = { |
| 120 | { |
| 121 | .phy_id = PHY_ID_AQ1202, |
| 122 | .phy_id_mask = 0xfffffff0, |
| 123 | .name = "Aquantia AQ1202", |
| 124 | .features = PHY_AQUANTIA_FEATURES, |
Shaohui Xie | 54cf7be | 2015-08-21 15:29:29 +0800 | [diff] [blame^] | 125 | .flags = PHY_HAS_INTERRUPT, |
Shaohui Xie | bee8259 | 2015-07-31 16:58:42 +0800 | [diff] [blame] | 126 | .aneg_done = aquantia_aneg_done, |
| 127 | .config_aneg = aquantia_config_aneg, |
Shaohui Xie | 54cf7be | 2015-08-21 15:29:29 +0800 | [diff] [blame^] | 128 | .config_intr = aquantia_config_intr, |
| 129 | .ack_interrupt = aquantia_ack_interrupt, |
Shaohui Xie | bee8259 | 2015-07-31 16:58:42 +0800 | [diff] [blame] | 130 | .read_status = aquantia_read_status, |
| 131 | .driver = { .owner = THIS_MODULE,}, |
| 132 | }, |
| 133 | { |
| 134 | .phy_id = PHY_ID_AQ2104, |
| 135 | .phy_id_mask = 0xfffffff0, |
| 136 | .name = "Aquantia AQ2104", |
| 137 | .features = PHY_AQUANTIA_FEATURES, |
Shaohui Xie | 54cf7be | 2015-08-21 15:29:29 +0800 | [diff] [blame^] | 138 | .flags = PHY_HAS_INTERRUPT, |
Shaohui Xie | bee8259 | 2015-07-31 16:58:42 +0800 | [diff] [blame] | 139 | .aneg_done = aquantia_aneg_done, |
| 140 | .config_aneg = aquantia_config_aneg, |
Shaohui Xie | 54cf7be | 2015-08-21 15:29:29 +0800 | [diff] [blame^] | 141 | .config_intr = aquantia_config_intr, |
| 142 | .ack_interrupt = aquantia_ack_interrupt, |
Shaohui Xie | bee8259 | 2015-07-31 16:58:42 +0800 | [diff] [blame] | 143 | .read_status = aquantia_read_status, |
| 144 | .driver = { .owner = THIS_MODULE,}, |
| 145 | }, |
| 146 | { |
| 147 | .phy_id = PHY_ID_AQR105, |
| 148 | .phy_id_mask = 0xfffffff0, |
| 149 | .name = "Aquantia AQR105", |
| 150 | .features = PHY_AQUANTIA_FEATURES, |
Shaohui Xie | 54cf7be | 2015-08-21 15:29:29 +0800 | [diff] [blame^] | 151 | .flags = PHY_HAS_INTERRUPT, |
Shaohui Xie | bee8259 | 2015-07-31 16:58:42 +0800 | [diff] [blame] | 152 | .aneg_done = aquantia_aneg_done, |
| 153 | .config_aneg = aquantia_config_aneg, |
Shaohui Xie | 54cf7be | 2015-08-21 15:29:29 +0800 | [diff] [blame^] | 154 | .config_intr = aquantia_config_intr, |
| 155 | .ack_interrupt = aquantia_ack_interrupt, |
Shaohui Xie | bee8259 | 2015-07-31 16:58:42 +0800 | [diff] [blame] | 156 | .read_status = aquantia_read_status, |
| 157 | .driver = { .owner = THIS_MODULE,}, |
| 158 | }, |
| 159 | { |
| 160 | .phy_id = PHY_ID_AQR405, |
| 161 | .phy_id_mask = 0xfffffff0, |
| 162 | .name = "Aquantia AQR405", |
| 163 | .features = PHY_AQUANTIA_FEATURES, |
Shaohui Xie | 54cf7be | 2015-08-21 15:29:29 +0800 | [diff] [blame^] | 164 | .flags = PHY_HAS_INTERRUPT, |
Shaohui Xie | bee8259 | 2015-07-31 16:58:42 +0800 | [diff] [blame] | 165 | .aneg_done = aquantia_aneg_done, |
| 166 | .config_aneg = aquantia_config_aneg, |
Shaohui Xie | 54cf7be | 2015-08-21 15:29:29 +0800 | [diff] [blame^] | 167 | .config_intr = aquantia_config_intr, |
| 168 | .ack_interrupt = aquantia_ack_interrupt, |
Shaohui Xie | bee8259 | 2015-07-31 16:58:42 +0800 | [diff] [blame] | 169 | .read_status = aquantia_read_status, |
| 170 | .driver = { .owner = THIS_MODULE,}, |
| 171 | }, |
| 172 | }; |
| 173 | |
| 174 | static int __init aquantia_init(void) |
| 175 | { |
| 176 | return phy_drivers_register(aquantia_driver, |
| 177 | ARRAY_SIZE(aquantia_driver)); |
| 178 | } |
| 179 | |
| 180 | static void __exit aquantia_exit(void) |
| 181 | { |
| 182 | return phy_drivers_unregister(aquantia_driver, |
| 183 | ARRAY_SIZE(aquantia_driver)); |
| 184 | } |
| 185 | |
| 186 | module_init(aquantia_init); |
| 187 | module_exit(aquantia_exit); |
| 188 | |
| 189 | static struct mdio_device_id __maybe_unused aquantia_tbl[] = { |
| 190 | { PHY_ID_AQ1202, 0xfffffff0 }, |
| 191 | { PHY_ID_AQ2104, 0xfffffff0 }, |
| 192 | { PHY_ID_AQR105, 0xfffffff0 }, |
| 193 | { PHY_ID_AQR405, 0xfffffff0 }, |
| 194 | { } |
| 195 | }; |
| 196 | |
| 197 | MODULE_DEVICE_TABLE(mdio, aquantia_tbl); |
| 198 | |
| 199 | MODULE_DESCRIPTION("Aquantia PHY driver"); |
| 200 | MODULE_AUTHOR("Shaohui Xie <Shaohui.Xie@freescale.com>"); |
| 201 | MODULE_LICENSE("GPL v2"); |