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9#include <linux/ethtool.h>
10#include <linux/etherdevice.h>
11#include <linux/kernel.h>
12#include <linux/mii.h>
13#include <linux/module.h>
14#include <linux/of.h>
15#include <linux/phy.h>
16#include <linux/netdevice.h>
17
18#define DP83TC811_PHY_ID 0x2000a253
19#define DP83811_DEVADDR 0x1f
20
21#define MII_DP83811_SGMII_CTRL 0x09
22#define MII_DP83811_INT_STAT1 0x12
23#define MII_DP83811_INT_STAT2 0x13
24#define MII_DP83811_INT_STAT3 0x18
25#define MII_DP83811_RESET_CTRL 0x1f
26
27#define DP83811_HW_RESET BIT(15)
28#define DP83811_SW_RESET BIT(14)
29
30
31#define DP83811_RX_ERR_HF_INT_EN BIT(0)
32#define DP83811_MS_TRAINING_INT_EN BIT(1)
33#define DP83811_ANEG_COMPLETE_INT_EN BIT(2)
34#define DP83811_ESD_EVENT_INT_EN BIT(3)
35#define DP83811_WOL_INT_EN BIT(4)
36#define DP83811_LINK_STAT_INT_EN BIT(5)
37#define DP83811_ENERGY_DET_INT_EN BIT(6)
38#define DP83811_LINK_QUAL_INT_EN BIT(7)
39
40
41#define DP83811_JABBER_DET_INT_EN BIT(0)
42#define DP83811_POLARITY_INT_EN BIT(1)
43#define DP83811_SLEEP_MODE_INT_EN BIT(2)
44#define DP83811_OVERTEMP_INT_EN BIT(3)
45#define DP83811_OVERVOLTAGE_INT_EN BIT(6)
46#define DP83811_UNDERVOLTAGE_INT_EN BIT(7)
47
48
49#define DP83811_LPS_INT_EN BIT(0)
50#define DP83811_NO_FRAME_INT_EN BIT(3)
51#define DP83811_POR_DONE_INT_EN BIT(4)
52
53#define MII_DP83811_RXSOP1 0x04a5
54#define MII_DP83811_RXSOP2 0x04a6
55#define MII_DP83811_RXSOP3 0x04a7
56
57
58#define MII_DP83811_WOL_CFG 0x04a0
59#define MII_DP83811_WOL_STAT 0x04a1
60#define MII_DP83811_WOL_DA1 0x04a2
61#define MII_DP83811_WOL_DA2 0x04a3
62#define MII_DP83811_WOL_DA3 0x04a4
63
64
65#define DP83811_WOL_MAGIC_EN BIT(0)
66#define DP83811_WOL_SECURE_ON BIT(5)
67#define DP83811_WOL_EN BIT(7)
68#define DP83811_WOL_INDICATION_SEL BIT(8)
69#define DP83811_WOL_CLR_INDICATION BIT(11)
70
71
72#define DP83811_TDR_AUTO BIT(8)
73#define DP83811_SGMII_EN BIT(12)
74#define DP83811_SGMII_AUTO_NEG_EN BIT(13)
75#define DP83811_SGMII_TX_ERR_DIS BIT(14)
76#define DP83811_SGMII_SOFT_RESET BIT(15)
77
78static int dp83811_ack_interrupt(struct phy_device *phydev)
79{
80 int err;
81
82 err = phy_read(phydev, MII_DP83811_INT_STAT1);
83 if (err < 0)
84 return err;
85
86 err = phy_read(phydev, MII_DP83811_INT_STAT2);
87 if (err < 0)
88 return err;
89
90 err = phy_read(phydev, MII_DP83811_INT_STAT3);
91 if (err < 0)
92 return err;
93
94 return 0;
95}
96
97static int dp83811_set_wol(struct phy_device *phydev,
98 struct ethtool_wolinfo *wol)
99{
100 struct net_device *ndev = phydev->attached_dev;
101 const u8 *mac;
102 u16 value;
103
104 if (wol->wolopts & (WAKE_MAGIC | WAKE_MAGICSECURE)) {
105 mac = (const u8 *)ndev->dev_addr;
106
107 if (!is_valid_ether_addr(mac))
108 return -EINVAL;
109
110
111
112
113 phy_write_mmd(phydev, DP83811_DEVADDR, MII_DP83811_WOL_DA1,
114 (mac[1] << 8) | mac[0]);
115 phy_write_mmd(phydev, DP83811_DEVADDR, MII_DP83811_WOL_DA2,
116 (mac[3] << 8) | mac[2]);
117 phy_write_mmd(phydev, DP83811_DEVADDR, MII_DP83811_WOL_DA3,
118 (mac[5] << 8) | mac[4]);
119
120 value = phy_read_mmd(phydev, DP83811_DEVADDR,
121 MII_DP83811_WOL_CFG);
122 if (wol->wolopts & WAKE_MAGIC)
123 value |= DP83811_WOL_MAGIC_EN;
124 else
125 value &= ~DP83811_WOL_MAGIC_EN;
126
127 if (wol->wolopts & WAKE_MAGICSECURE) {
128 phy_write_mmd(phydev, DP83811_DEVADDR,
129 MII_DP83811_RXSOP1,
130 (wol->sopass[1] << 8) | wol->sopass[0]);
131 phy_write_mmd(phydev, DP83811_DEVADDR,
132 MII_DP83811_RXSOP2,
133 (wol->sopass[3] << 8) | wol->sopass[2]);
134 phy_write_mmd(phydev, DP83811_DEVADDR,
135 MII_DP83811_RXSOP3,
136 (wol->sopass[5] << 8) | wol->sopass[4]);
137 value |= DP83811_WOL_SECURE_ON;
138 } else {
139 value &= ~DP83811_WOL_SECURE_ON;
140 }
141
142 value |= (DP83811_WOL_EN | DP83811_WOL_INDICATION_SEL |
143 DP83811_WOL_CLR_INDICATION);
144 phy_write_mmd(phydev, DP83811_DEVADDR, MII_DP83811_WOL_CFG,
145 value);
146 } else {
147 phy_clear_bits_mmd(phydev, DP83811_DEVADDR, MII_DP83811_WOL_CFG,
148 DP83811_WOL_EN);
149 }
150
151 return 0;
152}
153
154static void dp83811_get_wol(struct phy_device *phydev,
155 struct ethtool_wolinfo *wol)
156{
157 u16 sopass_val;
158 int value;
159
160 wol->supported = (WAKE_MAGIC | WAKE_MAGICSECURE);
161 wol->wolopts = 0;
162
163 value = phy_read_mmd(phydev, DP83811_DEVADDR, MII_DP83811_WOL_CFG);
164
165 if (value & DP83811_WOL_MAGIC_EN)
166 wol->wolopts |= WAKE_MAGIC;
167
168 if (value & DP83811_WOL_SECURE_ON) {
169 sopass_val = phy_read_mmd(phydev, DP83811_DEVADDR,
170 MII_DP83811_RXSOP1);
171 wol->sopass[0] = (sopass_val & 0xff);
172 wol->sopass[1] = (sopass_val >> 8);
173
174 sopass_val = phy_read_mmd(phydev, DP83811_DEVADDR,
175 MII_DP83811_RXSOP2);
176 wol->sopass[2] = (sopass_val & 0xff);
177 wol->sopass[3] = (sopass_val >> 8);
178
179 sopass_val = phy_read_mmd(phydev, DP83811_DEVADDR,
180 MII_DP83811_RXSOP3);
181 wol->sopass[4] = (sopass_val & 0xff);
182 wol->sopass[5] = (sopass_val >> 8);
183
184 wol->wolopts |= WAKE_MAGICSECURE;
185 }
186
187
188 if (!(value & DP83811_WOL_EN))
189 wol->wolopts = 0;
190}
191
192static int dp83811_config_intr(struct phy_device *phydev)
193{
194 int misr_status, err;
195
196 if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
197 misr_status = phy_read(phydev, MII_DP83811_INT_STAT1);
198 if (misr_status < 0)
199 return misr_status;
200
201 misr_status |= (DP83811_RX_ERR_HF_INT_EN |
202 DP83811_MS_TRAINING_INT_EN |
203 DP83811_ANEG_COMPLETE_INT_EN |
204 DP83811_ESD_EVENT_INT_EN |
205 DP83811_WOL_INT_EN |
206 DP83811_LINK_STAT_INT_EN |
207 DP83811_ENERGY_DET_INT_EN |
208 DP83811_LINK_QUAL_INT_EN);
209
210 err = phy_write(phydev, MII_DP83811_INT_STAT1, misr_status);
211 if (err < 0)
212 return err;
213
214 misr_status = phy_read(phydev, MII_DP83811_INT_STAT2);
215 if (misr_status < 0)
216 return misr_status;
217
218 misr_status |= (DP83811_JABBER_DET_INT_EN |
219 DP83811_POLARITY_INT_EN |
220 DP83811_SLEEP_MODE_INT_EN |
221 DP83811_OVERTEMP_INT_EN |
222 DP83811_OVERVOLTAGE_INT_EN |
223 DP83811_UNDERVOLTAGE_INT_EN);
224
225 err = phy_write(phydev, MII_DP83811_INT_STAT2, misr_status);
226 if (err < 0)
227 return err;
228
229 misr_status = phy_read(phydev, MII_DP83811_INT_STAT3);
230 if (misr_status < 0)
231 return misr_status;
232
233 misr_status |= (DP83811_LPS_INT_EN |
234 DP83811_NO_FRAME_INT_EN |
235 DP83811_POR_DONE_INT_EN);
236
237 err = phy_write(phydev, MII_DP83811_INT_STAT3, misr_status);
238
239 } else {
240 err = phy_write(phydev, MII_DP83811_INT_STAT1, 0);
241 if (err < 0)
242 return err;
243
244 err = phy_write(phydev, MII_DP83811_INT_STAT2, 0);
245 if (err < 0)
246 return err;
247
248 err = phy_write(phydev, MII_DP83811_INT_STAT3, 0);
249 }
250
251 return err;
252}
253
254static int dp83811_config_aneg(struct phy_device *phydev)
255{
256 int value, err;
257
258 if (phydev->interface == PHY_INTERFACE_MODE_SGMII) {
259 value = phy_read(phydev, MII_DP83811_SGMII_CTRL);
260 if (phydev->autoneg == AUTONEG_ENABLE) {
261 err = phy_write(phydev, MII_DP83811_SGMII_CTRL,
262 (DP83811_SGMII_AUTO_NEG_EN | value));
263 if (err < 0)
264 return err;
265 } else {
266 err = phy_write(phydev, MII_DP83811_SGMII_CTRL,
267 (~DP83811_SGMII_AUTO_NEG_EN & value));
268 if (err < 0)
269 return err;
270 }
271 }
272
273 return genphy_config_aneg(phydev);
274}
275
276static int dp83811_config_init(struct phy_device *phydev)
277{
278 int value, err;
279
280 err = genphy_config_init(phydev);
281 if (err < 0)
282 return err;
283
284 value = phy_read(phydev, MII_DP83811_SGMII_CTRL);
285 if (phydev->interface == PHY_INTERFACE_MODE_SGMII) {
286 err = phy_write(phydev, MII_DP83811_SGMII_CTRL,
287 (DP83811_SGMII_EN | value));
288 } else {
289 err = phy_write(phydev, MII_DP83811_SGMII_CTRL,
290 (~DP83811_SGMII_EN & value));
291 }
292
293 if (err < 0)
294
295 return err;
296
297 value = DP83811_WOL_MAGIC_EN | DP83811_WOL_SECURE_ON | DP83811_WOL_EN;
298
299 return phy_write_mmd(phydev, DP83811_DEVADDR, MII_DP83811_WOL_CFG,
300 value);
301}
302
303static int dp83811_phy_reset(struct phy_device *phydev)
304{
305 int err;
306
307 err = phy_write(phydev, MII_DP83811_RESET_CTRL, DP83811_HW_RESET);
308 if (err < 0)
309 return err;
310
311 return 0;
312}
313
314static int dp83811_suspend(struct phy_device *phydev)
315{
316 int value;
317
318 value = phy_read_mmd(phydev, DP83811_DEVADDR, MII_DP83811_WOL_CFG);
319
320 if (!(value & DP83811_WOL_EN))
321 genphy_suspend(phydev);
322
323 return 0;
324}
325
326static int dp83811_resume(struct phy_device *phydev)
327{
328 genphy_resume(phydev);
329
330 phy_set_bits_mmd(phydev, DP83811_DEVADDR, MII_DP83811_WOL_CFG,
331 DP83811_WOL_CLR_INDICATION);
332
333 return 0;
334}
335
336static struct phy_driver dp83811_driver[] = {
337 {
338 .phy_id = DP83TC811_PHY_ID,
339 .phy_id_mask = 0xfffffff0,
340 .name = "TI DP83TC811",
341
342 .config_init = dp83811_config_init,
343 .config_aneg = dp83811_config_aneg,
344 .soft_reset = dp83811_phy_reset,
345 .get_wol = dp83811_get_wol,
346 .set_wol = dp83811_set_wol,
347 .ack_interrupt = dp83811_ack_interrupt,
348 .config_intr = dp83811_config_intr,
349 .suspend = dp83811_suspend,
350 .resume = dp83811_resume,
351 },
352};
353module_phy_driver(dp83811_driver);
354
355static struct mdio_device_id __maybe_unused dp83811_tbl[] = {
356 { DP83TC811_PHY_ID, 0xfffffff0 },
357 { },
358};
359MODULE_DEVICE_TABLE(mdio, dp83811_tbl);
360
361MODULE_DESCRIPTION("Texas Instruments DP83TC811 PHY driver");
362MODULE_AUTHOR("Dan Murphy <dmurphy@ti.com");
363MODULE_LICENSE("GPL");
364
