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ef82a306 JL |
1 | /* |
2 | * Driver for Vitesse PHYs | |
3 | * | |
4 | * Author: Kriston Carson | |
5 | * | |
fddf86fc | 6 | * Copyright (c) 2005, 2009 Freescale Semiconductor, Inc. |
ef82a306 JL |
7 | * |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the | |
10 | * Free Software Foundation; either version 2 of the License, or (at your | |
11 | * option) any later version. | |
12 | * | |
13 | */ | |
14 | ||
ef82a306 JL |
15 | #include <linux/kernel.h> |
16 | #include <linux/module.h> | |
17 | #include <linux/mii.h> | |
18 | #include <linux/ethtool.h> | |
19 | #include <linux/phy.h> | |
20 | ||
21 | /* Vitesse Extended Control Register 1 */ | |
22 | #define MII_VSC8244_EXT_CON1 0x17 | |
23 | #define MII_VSC8244_EXTCON1_INIT 0x0000 | |
af2d940d AF |
24 | #define MII_VSC8244_EXTCON1_TX_SKEW_MASK 0x0c00 |
25 | #define MII_VSC8244_EXTCON1_RX_SKEW_MASK 0x0300 | |
26 | #define MII_VSC8244_EXTCON1_TX_SKEW 0x0800 | |
27 | #define MII_VSC8244_EXTCON1_RX_SKEW 0x0200 | |
ef82a306 JL |
28 | |
29 | /* Vitesse Interrupt Mask Register */ | |
30 | #define MII_VSC8244_IMASK 0x19 | |
31 | #define MII_VSC8244_IMASK_IEN 0x8000 | |
32 | #define MII_VSC8244_IMASK_SPEED 0x4000 | |
33 | #define MII_VSC8244_IMASK_LINK 0x2000 | |
34 | #define MII_VSC8244_IMASK_DUPLEX 0x1000 | |
35 | #define MII_VSC8244_IMASK_MASK 0xf000 | |
36 | ||
11c6dd2c TP |
37 | #define MII_VSC8221_IMASK_MASK 0xa000 |
38 | ||
ef82a306 JL |
39 | /* Vitesse Interrupt Status Register */ |
40 | #define MII_VSC8244_ISTAT 0x1a | |
41 | #define MII_VSC8244_ISTAT_STATUS 0x8000 | |
42 | #define MII_VSC8244_ISTAT_SPEED 0x4000 | |
43 | #define MII_VSC8244_ISTAT_LINK 0x2000 | |
44 | #define MII_VSC8244_ISTAT_DUPLEX 0x1000 | |
45 | ||
46 | /* Vitesse Auxiliary Control/Status Register */ | |
2a8626d1 MS |
47 | #define MII_VSC8244_AUX_CONSTAT 0x1c |
48 | #define MII_VSC8244_AUXCONSTAT_INIT 0x0000 | |
49 | #define MII_VSC8244_AUXCONSTAT_DUPLEX 0x0020 | |
50 | #define MII_VSC8244_AUXCONSTAT_SPEED 0x0018 | |
51 | #define MII_VSC8244_AUXCONSTAT_GBIT 0x0010 | |
52 | #define MII_VSC8244_AUXCONSTAT_100 0x0008 | |
ef82a306 | 53 | |
11c6dd2c TP |
54 | #define MII_VSC8221_AUXCONSTAT_INIT 0x0004 /* need to set this bit? */ |
55 | #define MII_VSC8221_AUXCONSTAT_RESERVED 0x0004 | |
56 | ||
0508019c | 57 | #define PHY_ID_VSC8234 0x000fc620 |
11c6dd2c | 58 | #define PHY_ID_VSC8244 0x000fc6c0 |
c2efef74 | 59 | #define PHY_ID_VSC8574 0x000704a0 |
06ae4f84 | 60 | #define PHY_ID_VSC8662 0x00070660 |
11c6dd2c | 61 | #define PHY_ID_VSC8221 0x000fc550 |
5a1cebd8 | 62 | #define PHY_ID_VSC8211 0x000fc4b0 |
11c6dd2c | 63 | |
ef82a306 JL |
64 | MODULE_DESCRIPTION("Vitesse PHY driver"); |
65 | MODULE_AUTHOR("Kriston Carson"); | |
66 | MODULE_LICENSE("GPL"); | |
67 | ||
baec126c | 68 | static int vsc824x_add_skew(struct phy_device *phydev) |
ef82a306 JL |
69 | { |
70 | int err; | |
fddf86fc | 71 | int extcon; |
ef82a306 | 72 | |
af2d940d AF |
73 | extcon = phy_read(phydev, MII_VSC8244_EXT_CON1); |
74 | ||
75 | if (extcon < 0) | |
fddf86fc | 76 | return extcon; |
af2d940d AF |
77 | |
78 | extcon &= ~(MII_VSC8244_EXTCON1_TX_SKEW_MASK | | |
79 | MII_VSC8244_EXTCON1_RX_SKEW_MASK); | |
80 | ||
fddf86fc AF |
81 | extcon |= (MII_VSC8244_EXTCON1_TX_SKEW | |
82 | MII_VSC8244_EXTCON1_RX_SKEW); | |
af2d940d AF |
83 | |
84 | err = phy_write(phydev, MII_VSC8244_EXT_CON1, extcon); | |
85 | ||
ef82a306 JL |
86 | return err; |
87 | } | |
fddf86fc AF |
88 | |
89 | static int vsc824x_config_init(struct phy_device *phydev) | |
90 | { | |
91 | int err; | |
92 | ||
93 | err = phy_write(phydev, MII_VSC8244_AUX_CONSTAT, | |
94 | MII_VSC8244_AUXCONSTAT_INIT); | |
95 | if (err < 0) | |
96 | return err; | |
97 | ||
98 | if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) | |
99 | err = vsc824x_add_skew(phydev); | |
100 | ||
101 | return err; | |
102 | } | |
ef82a306 JL |
103 | |
104 | static int vsc824x_ack_interrupt(struct phy_device *phydev) | |
105 | { | |
1d5e83aa | 106 | int err = 0; |
2a8626d1 MS |
107 | |
108 | /* Don't bother to ACK the interrupts if interrupts | |
1d5e83aa AF |
109 | * are disabled. The 824x cannot clear the interrupts |
110 | * if they are disabled. | |
111 | */ | |
112 | if (phydev->interrupts == PHY_INTERRUPT_ENABLED) | |
113 | err = phy_read(phydev, MII_VSC8244_ISTAT); | |
ef82a306 JL |
114 | |
115 | return (err < 0) ? err : 0; | |
116 | } | |
117 | ||
11c6dd2c | 118 | static int vsc82xx_config_intr(struct phy_device *phydev) |
ef82a306 JL |
119 | { |
120 | int err; | |
121 | ||
122 | if (phydev->interrupts == PHY_INTERRUPT_ENABLED) | |
123 | err = phy_write(phydev, MII_VSC8244_IMASK, | |
0508019c | 124 | (phydev->drv->phy_id == PHY_ID_VSC8234 || |
c2efef74 | 125 | phydev->drv->phy_id == PHY_ID_VSC8244 || |
126 | phydev->drv->phy_id == PHY_ID_VSC8574) ? | |
11c6dd2c TP |
127 | MII_VSC8244_IMASK_MASK : |
128 | MII_VSC8221_IMASK_MASK); | |
1d5e83aa | 129 | else { |
2a8626d1 | 130 | /* The Vitesse PHY cannot clear the interrupt |
1d5e83aa AF |
131 | * once it has disabled them, so we clear them first |
132 | */ | |
133 | err = phy_read(phydev, MII_VSC8244_ISTAT); | |
134 | ||
52cb1c2b | 135 | if (err < 0) |
1d5e83aa AF |
136 | return err; |
137 | ||
ef82a306 | 138 | err = phy_write(phydev, MII_VSC8244_IMASK, 0); |
1d5e83aa AF |
139 | } |
140 | ||
ef82a306 JL |
141 | return err; |
142 | } | |
143 | ||
11c6dd2c | 144 | static int vsc8221_config_init(struct phy_device *phydev) |
ef82a306 | 145 | { |
11c6dd2c TP |
146 | int err; |
147 | ||
148 | err = phy_write(phydev, MII_VSC8244_AUX_CONSTAT, | |
149 | MII_VSC8221_AUXCONSTAT_INIT); | |
150 | return err; | |
151 | ||
152 | /* Perhaps we should set EXT_CON1 based on the interface? | |
2a8626d1 MS |
153 | * Options are 802.3Z SerDes or SGMII |
154 | */ | |
11c6dd2c TP |
155 | } |
156 | ||
0508019c | 157 | /* Vitesse 82xx */ |
d5bf9071 CH |
158 | static struct phy_driver vsc82xx_driver[] = { |
159 | { | |
0508019c AF |
160 | .phy_id = PHY_ID_VSC8234, |
161 | .name = "Vitesse VSC8234", | |
162 | .phy_id_mask = 0x000ffff0, | |
163 | .features = PHY_GBIT_FEATURES, | |
164 | .flags = PHY_HAS_INTERRUPT, | |
165 | .config_init = &vsc824x_config_init, | |
166 | .config_aneg = &genphy_config_aneg, | |
167 | .read_status = &genphy_read_status, | |
168 | .ack_interrupt = &vsc824x_ack_interrupt, | |
169 | .config_intr = &vsc82xx_config_intr, | |
170 | .driver = { .owner = THIS_MODULE,}, | |
171 | }, { | |
d5bf9071 CH |
172 | .phy_id = PHY_ID_VSC8244, |
173 | .name = "Vitesse VSC8244", | |
174 | .phy_id_mask = 0x000fffc0, | |
175 | .features = PHY_GBIT_FEATURES, | |
176 | .flags = PHY_HAS_INTERRUPT, | |
177 | .config_init = &vsc824x_config_init, | |
178 | .config_aneg = &genphy_config_aneg, | |
179 | .read_status = &genphy_read_status, | |
180 | .ack_interrupt = &vsc824x_ack_interrupt, | |
181 | .config_intr = &vsc82xx_config_intr, | |
182 | .driver = { .owner = THIS_MODULE,}, | |
c2efef74 | 183 | }, { |
184 | .phy_id = PHY_ID_VSC8574, | |
185 | .name = "Vitesse VSC8574", | |
186 | .phy_id_mask = 0x000ffff0, | |
187 | .features = PHY_GBIT_FEATURES, | |
188 | .flags = PHY_HAS_INTERRUPT, | |
189 | .config_init = &vsc824x_config_init, | |
190 | .config_aneg = &genphy_config_aneg, | |
191 | .read_status = &genphy_read_status, | |
192 | .ack_interrupt = &vsc824x_ack_interrupt, | |
193 | .config_intr = &vsc82xx_config_intr, | |
194 | .driver = { .owner = THIS_MODULE,}, | |
06ae4f84 SS |
195 | }, { |
196 | .phy_id = PHY_ID_VSC8662, | |
197 | .name = "Vitesse VSC8662", | |
198 | .phy_id_mask = 0x000ffff0, | |
199 | .features = PHY_GBIT_FEATURES, | |
200 | .flags = PHY_HAS_INTERRUPT, | |
201 | .config_init = &vsc824x_config_init, | |
202 | .config_aneg = &genphy_config_aneg, | |
203 | .read_status = &genphy_read_status, | |
204 | .ack_interrupt = &vsc824x_ack_interrupt, | |
205 | .config_intr = &vsc82xx_config_intr, | |
206 | .driver = { .owner = THIS_MODULE,}, | |
d5bf9071 CH |
207 | }, { |
208 | /* Vitesse 8221 */ | |
11c6dd2c TP |
209 | .phy_id = PHY_ID_VSC8221, |
210 | .phy_id_mask = 0x000ffff0, | |
211 | .name = "Vitesse VSC8221", | |
212 | .features = PHY_GBIT_FEATURES, | |
213 | .flags = PHY_HAS_INTERRUPT, | |
214 | .config_init = &vsc8221_config_init, | |
215 | .config_aneg = &genphy_config_aneg, | |
216 | .read_status = &genphy_read_status, | |
217 | .ack_interrupt = &vsc824x_ack_interrupt, | |
218 | .config_intr = &vsc82xx_config_intr, | |
d5bf9071 | 219 | .driver = { .owner = THIS_MODULE,}, |
5a1cebd8 MS |
220 | }, { |
221 | /* Vitesse 8211 */ | |
222 | .phy_id = PHY_ID_VSC8211, | |
223 | .phy_id_mask = 0x000ffff0, | |
224 | .name = "Vitesse VSC8211", | |
225 | .features = PHY_GBIT_FEATURES, | |
226 | .flags = PHY_HAS_INTERRUPT, | |
227 | .config_init = &vsc8221_config_init, | |
228 | .config_aneg = &genphy_config_aneg, | |
229 | .read_status = &genphy_read_status, | |
230 | .ack_interrupt = &vsc824x_ack_interrupt, | |
231 | .config_intr = &vsc82xx_config_intr, | |
232 | .driver = { .owner = THIS_MODULE,}, | |
d5bf9071 | 233 | } }; |
11c6dd2c TP |
234 | |
235 | static int __init vsc82xx_init(void) | |
236 | { | |
d5bf9071 CH |
237 | return phy_drivers_register(vsc82xx_driver, |
238 | ARRAY_SIZE(vsc82xx_driver)); | |
ef82a306 JL |
239 | } |
240 | ||
11c6dd2c | 241 | static void __exit vsc82xx_exit(void) |
ef82a306 | 242 | { |
d5bf9071 CH |
243 | return phy_drivers_unregister(vsc82xx_driver, |
244 | ARRAY_SIZE(vsc82xx_driver)); | |
ef82a306 JL |
245 | } |
246 | ||
11c6dd2c TP |
247 | module_init(vsc82xx_init); |
248 | module_exit(vsc82xx_exit); | |
4e4f10f6 | 249 | |
cf93c945 | 250 | static struct mdio_device_id __maybe_unused vitesse_tbl[] = { |
0508019c | 251 | { PHY_ID_VSC8234, 0x000ffff0 }, |
4e4f10f6 | 252 | { PHY_ID_VSC8244, 0x000fffc0 }, |
c2efef74 | 253 | { PHY_ID_VSC8574, 0x000ffff0 }, |
06ae4f84 | 254 | { PHY_ID_VSC8662, 0x000ffff0 }, |
4e4f10f6 | 255 | { PHY_ID_VSC8221, 0x000ffff0 }, |
5a1cebd8 | 256 | { PHY_ID_VSC8211, 0x000ffff0 }, |
4e4f10f6 DW |
257 | { } |
258 | }; | |
259 | ||
260 | MODULE_DEVICE_TABLE(mdio, vitesse_tbl); |