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d0507009 DC |
1 | /* |
2 | * drivers/net/phy/micrel.c | |
3 | * | |
4 | * Driver for Micrel PHYs | |
5 | * | |
6 | * Author: David J. Choi | |
7 | * | |
8 | * Copyright (c) 2010 Micrel, Inc. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify it | |
11 | * under the terms of the GNU General Public License as published by the | |
12 | * Free Software Foundation; either version 2 of the License, or (at your | |
13 | * option) any later version. | |
14 | * | |
51f932c4 CD |
15 | * Support : ksz9021 1000/100/10 phy from Micrel |
16 | * ks8001, ks8737, ks8721, ks8041, ks8051 100/10 phy | |
d0507009 DC |
17 | */ |
18 | ||
19 | #include <linux/kernel.h> | |
20 | #include <linux/module.h> | |
21 | #include <linux/phy.h> | |
22 | ||
23 | #define PHY_ID_KSZ9021 0x00221611 | |
51f932c4 CD |
24 | #define PHY_ID_KS8737 0x00221720 |
25 | #define PHY_ID_KS8041 0x00221510 | |
26 | #define PHY_ID_KS8051 0x00221550 | |
27 | /* both for ks8001 Rev. A/B, and for ks8721 Rev 3. */ | |
d0507009 DC |
28 | #define PHY_ID_KS8001 0x0022161A |
29 | ||
51f932c4 CD |
30 | /* general Interrupt control/status reg in vendor specific block. */ |
31 | #define MII_KSZPHY_INTCS 0x1B | |
32 | #define KSZPHY_INTCS_JABBER (1 << 15) | |
33 | #define KSZPHY_INTCS_RECEIVE_ERR (1 << 14) | |
34 | #define KSZPHY_INTCS_PAGE_RECEIVE (1 << 13) | |
35 | #define KSZPHY_INTCS_PARELLEL (1 << 12) | |
36 | #define KSZPHY_INTCS_LINK_PARTNER_ACK (1 << 11) | |
37 | #define KSZPHY_INTCS_LINK_DOWN (1 << 10) | |
38 | #define KSZPHY_INTCS_REMOTE_FAULT (1 << 9) | |
39 | #define KSZPHY_INTCS_LINK_UP (1 << 8) | |
40 | #define KSZPHY_INTCS_ALL (KSZPHY_INTCS_LINK_UP |\ | |
41 | KSZPHY_INTCS_LINK_DOWN) | |
42 | ||
43 | /* general PHY control reg in vendor specific block. */ | |
44 | #define MII_KSZPHY_CTRL 0x1F | |
45 | /* bitmap of PHY register to set interrupt mode */ | |
46 | #define KSZPHY_CTRL_INT_ACTIVE_HIGH (1 << 9) | |
47 | #define KSZ9021_CTRL_INT_ACTIVE_HIGH (1 << 14) | |
48 | #define KS8737_CTRL_INT_ACTIVE_HIGH (1 << 14) | |
49 | ||
50 | static int kszphy_ack_interrupt(struct phy_device *phydev) | |
51 | { | |
52 | /* bit[7..0] int status, which is a read and clear register. */ | |
53 | int rc; | |
54 | ||
55 | rc = phy_read(phydev, MII_KSZPHY_INTCS); | |
56 | ||
57 | return (rc < 0) ? rc : 0; | |
58 | } | |
59 | ||
60 | static int kszphy_set_interrupt(struct phy_device *phydev) | |
61 | { | |
62 | int temp; | |
63 | temp = (PHY_INTERRUPT_ENABLED == phydev->interrupts) ? | |
64 | KSZPHY_INTCS_ALL : 0; | |
65 | return phy_write(phydev, MII_KSZPHY_INTCS, temp); | |
66 | } | |
67 | ||
68 | static int kszphy_config_intr(struct phy_device *phydev) | |
69 | { | |
70 | int temp, rc; | |
71 | ||
72 | /* set the interrupt pin active low */ | |
73 | temp = phy_read(phydev, MII_KSZPHY_CTRL); | |
74 | temp &= ~KSZPHY_CTRL_INT_ACTIVE_HIGH; | |
75 | phy_write(phydev, MII_KSZPHY_CTRL, temp); | |
76 | rc = kszphy_set_interrupt(phydev); | |
77 | return rc < 0 ? rc : 0; | |
78 | } | |
79 | ||
80 | static int ksz9021_config_intr(struct phy_device *phydev) | |
81 | { | |
82 | int temp, rc; | |
83 | ||
84 | /* set the interrupt pin active low */ | |
85 | temp = phy_read(phydev, MII_KSZPHY_CTRL); | |
86 | temp &= ~KSZ9021_CTRL_INT_ACTIVE_HIGH; | |
87 | phy_write(phydev, MII_KSZPHY_CTRL, temp); | |
88 | rc = kszphy_set_interrupt(phydev); | |
89 | return rc < 0 ? rc : 0; | |
90 | } | |
91 | ||
92 | static int ks8737_config_intr(struct phy_device *phydev) | |
93 | { | |
94 | int temp, rc; | |
95 | ||
96 | /* set the interrupt pin active low */ | |
97 | temp = phy_read(phydev, MII_KSZPHY_CTRL); | |
98 | temp &= ~KS8737_CTRL_INT_ACTIVE_HIGH; | |
99 | phy_write(phydev, MII_KSZPHY_CTRL, temp); | |
100 | rc = kszphy_set_interrupt(phydev); | |
101 | return rc < 0 ? rc : 0; | |
102 | } | |
d0507009 DC |
103 | |
104 | static int kszphy_config_init(struct phy_device *phydev) | |
105 | { | |
106 | return 0; | |
107 | } | |
108 | ||
51f932c4 CD |
109 | static struct phy_driver ks8737_driver = { |
110 | .phy_id = PHY_ID_KS8737, | |
111 | .phy_id_mask = 0x00fffff0, | |
112 | .name = "Micrel KS8737", | |
113 | .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause), | |
114 | .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT, | |
115 | .config_init = kszphy_config_init, | |
116 | .config_aneg = genphy_config_aneg, | |
117 | .read_status = genphy_read_status, | |
118 | .ack_interrupt = kszphy_ack_interrupt, | |
119 | .config_intr = ks8737_config_intr, | |
120 | .driver = { .owner = THIS_MODULE,}, | |
121 | }; | |
122 | ||
123 | static struct phy_driver ks8041_driver = { | |
124 | .phy_id = PHY_ID_KS8041, | |
125 | .phy_id_mask = 0x00fffff0, | |
126 | .name = "Micrel KS8041", | |
127 | .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause | |
128 | | SUPPORTED_Asym_Pause), | |
129 | .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT, | |
130 | .config_init = kszphy_config_init, | |
131 | .config_aneg = genphy_config_aneg, | |
132 | .read_status = genphy_read_status, | |
133 | .ack_interrupt = kszphy_ack_interrupt, | |
134 | .config_intr = kszphy_config_intr, | |
135 | .driver = { .owner = THIS_MODULE,}, | |
136 | }; | |
d0507009 | 137 | |
51f932c4 CD |
138 | static struct phy_driver ks8051_driver = { |
139 | .phy_id = PHY_ID_KS8051, | |
d0507009 | 140 | .phy_id_mask = 0x00fffff0, |
51f932c4 CD |
141 | .name = "Micrel KS8051", |
142 | .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause | |
143 | | SUPPORTED_Asym_Pause), | |
144 | .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT, | |
d0507009 DC |
145 | .config_init = kszphy_config_init, |
146 | .config_aneg = genphy_config_aneg, | |
147 | .read_status = genphy_read_status, | |
51f932c4 CD |
148 | .ack_interrupt = kszphy_ack_interrupt, |
149 | .config_intr = kszphy_config_intr, | |
d0507009 DC |
150 | .driver = { .owner = THIS_MODULE,}, |
151 | }; | |
152 | ||
51f932c4 CD |
153 | static struct phy_driver ks8001_driver = { |
154 | .phy_id = PHY_ID_KS8001, | |
155 | .name = "Micrel KS8001 or KS8721", | |
d0507009 | 156 | .phy_id_mask = 0x00fffff0, |
51f932c4 CD |
157 | .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause), |
158 | .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT, | |
d0507009 DC |
159 | .config_init = kszphy_config_init, |
160 | .config_aneg = genphy_config_aneg, | |
161 | .read_status = genphy_read_status, | |
51f932c4 CD |
162 | .ack_interrupt = kszphy_ack_interrupt, |
163 | .config_intr = kszphy_config_intr, | |
d0507009 DC |
164 | .driver = { .owner = THIS_MODULE,}, |
165 | }; | |
166 | ||
167 | static struct phy_driver ksz9021_driver = { | |
168 | .phy_id = PHY_ID_KSZ9021, | |
169 | .phy_id_mask = 0x000fff10, | |
170 | .name = "Micrel KSZ9021 Gigabit PHY", | |
51f932c4 CD |
171 | .features = (PHY_GBIT_FEATURES | SUPPORTED_Pause |
172 | | SUPPORTED_Asym_Pause), | |
173 | .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT, | |
d0507009 DC |
174 | .config_init = kszphy_config_init, |
175 | .config_aneg = genphy_config_aneg, | |
176 | .read_status = genphy_read_status, | |
51f932c4 CD |
177 | .ack_interrupt = kszphy_ack_interrupt, |
178 | .config_intr = ksz9021_config_intr, | |
d0507009 DC |
179 | .driver = { .owner = THIS_MODULE, }, |
180 | }; | |
181 | ||
182 | static int __init ksphy_init(void) | |
183 | { | |
184 | int ret; | |
185 | ||
186 | ret = phy_driver_register(&ks8001_driver); | |
187 | if (ret) | |
188 | goto err1; | |
51f932c4 CD |
189 | |
190 | ret = phy_driver_register(&ksz9021_driver); | |
d0507009 DC |
191 | if (ret) |
192 | goto err2; | |
193 | ||
51f932c4 | 194 | ret = phy_driver_register(&ks8737_driver); |
d0507009 DC |
195 | if (ret) |
196 | goto err3; | |
51f932c4 CD |
197 | ret = phy_driver_register(&ks8041_driver); |
198 | if (ret) | |
199 | goto err4; | |
200 | ret = phy_driver_register(&ks8051_driver); | |
201 | if (ret) | |
202 | goto err5; | |
203 | ||
d0507009 DC |
204 | return 0; |
205 | ||
51f932c4 CD |
206 | err5: |
207 | phy_driver_unregister(&ks8041_driver); | |
208 | err4: | |
209 | phy_driver_unregister(&ks8737_driver); | |
d0507009 | 210 | err3: |
51f932c4 | 211 | phy_driver_unregister(&ksz9021_driver); |
d0507009 DC |
212 | err2: |
213 | phy_driver_unregister(&ks8001_driver); | |
214 | err1: | |
215 | return ret; | |
216 | } | |
217 | ||
218 | static void __exit ksphy_exit(void) | |
219 | { | |
220 | phy_driver_unregister(&ks8001_driver); | |
51f932c4 | 221 | phy_driver_unregister(&ks8737_driver); |
d0507009 | 222 | phy_driver_unregister(&ksz9021_driver); |
51f932c4 CD |
223 | phy_driver_unregister(&ks8041_driver); |
224 | phy_driver_unregister(&ks8051_driver); | |
d0507009 DC |
225 | } |
226 | ||
227 | module_init(ksphy_init); | |
228 | module_exit(ksphy_exit); | |
229 | ||
230 | MODULE_DESCRIPTION("Micrel PHY driver"); | |
231 | MODULE_AUTHOR("David J. Choi"); | |
232 | MODULE_LICENSE("GPL"); | |
52a60ed2 | 233 | |
cf93c945 | 234 | static struct mdio_device_id __maybe_unused micrel_tbl[] = { |
52a60ed2 | 235 | { PHY_ID_KSZ9021, 0x000fff10 }, |
52a60ed2 | 236 | { PHY_ID_KS8001, 0x00fffff0 }, |
51f932c4 CD |
237 | { PHY_ID_KS8737, 0x00fffff0 }, |
238 | { PHY_ID_KS8041, 0x00fffff0 }, | |
239 | { PHY_ID_KS8051, 0x00fffff0 }, | |
52a60ed2 DM |
240 | { } |
241 | }; | |
242 | ||
243 | MODULE_DEVICE_TABLE(mdio, micrel_tbl); |