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
aquantia_config_aneg(struct phy_device * phydev)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
aquantia_config_intr(struct phy_device * phydev)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
aquantia_ack_interrupt(struct phy_device * phydev)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
aquantia_read_status(struct phy_device * phydev)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");
205
