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2024-01-04 1543e317f1da31b75942316931e8f491a8920811 
 kernel/drivers/net/dsa/mv88e6xxx/serdes.c
....@@ -1,14 +1,10 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
12 /*
23  * Marvell 88E6xxx SERDES manipulation, via SMI bus
34  *
45  * Copyright (c) 2008 Marvell Semiconductor
56  *
67  * Copyright (c) 2017 Andrew Lunn <andrew@lunn.ch>
7
- *
8
- * This program is free software; you can redistribute it and/or modify
9
- * it under the terms of the GNU General Public License as published by
10
- * the Free Software Foundation; either version 2 of the License, or
11
- * (at your option) any later version.
128  */
139 
1410 #include <linux/interrupt.h>
....@@ -53,7 +49,54 @@
5349 	return mv88e6xxx_phy_write(chip, lane, reg_c45, val);
5450 }
5551 
56
-static int mv88e6352_serdes_power_set(struct mv88e6xxx_chip *chip, bool on)
52
+static int mv88e6xxx_serdes_pcs_get_state(struct mv88e6xxx_chip *chip,
53
+					  u16 status, u16 lpa,
54
+					  struct phylink_link_state *state)
55
+{
56
+	if (status & MV88E6390_SGMII_PHY_STATUS_SPD_DPL_VALID) {
57
+		state->link = !!(status & MV88E6390_SGMII_PHY_STATUS_LINK);
58
+		state->duplex = status &
59
+				MV88E6390_SGMII_PHY_STATUS_DUPLEX_FULL ?
60
+			                         DUPLEX_FULL : DUPLEX_HALF;
61
+
62
+		if (status & MV88E6390_SGMII_PHY_STATUS_TX_PAUSE)
63
+			state->pause |= MLO_PAUSE_TX;
64
+		if (status & MV88E6390_SGMII_PHY_STATUS_RX_PAUSE)
65
+			state->pause |= MLO_PAUSE_RX;
66
+
67
+		switch (status & MV88E6390_SGMII_PHY_STATUS_SPEED_MASK) {
68
+		case MV88E6390_SGMII_PHY_STATUS_SPEED_1000:
69
+			if (state->interface == PHY_INTERFACE_MODE_2500BASEX)
70
+				state->speed = SPEED_2500;
71
+			else
72
+				state->speed = SPEED_1000;
73
+			break;
74
+		case MV88E6390_SGMII_PHY_STATUS_SPEED_100:
75
+			state->speed = SPEED_100;
76
+			break;
77
+		case MV88E6390_SGMII_PHY_STATUS_SPEED_10:
78
+			state->speed = SPEED_10;
79
+			break;
80
+		default:
81
+			dev_err(chip->dev, "invalid PHY speed\n");
82
+			return -EINVAL;
83
+		}
84
+	} else {
85
+		state->link = false;
86
+	}
87
+
88
+	if (state->interface == PHY_INTERFACE_MODE_2500BASEX)
89
+		mii_lpa_mod_linkmode_x(state->lp_advertising, lpa,
90
+				       ETHTOOL_LINK_MODE_2500baseX_Full_BIT);
91
+	else if (state->interface == PHY_INTERFACE_MODE_1000BASEX)
92
+		mii_lpa_mod_linkmode_x(state->lp_advertising, lpa,
93
+				       ETHTOOL_LINK_MODE_1000baseX_Full_BIT);
94
+
95
+	return 0;
96
+}
97
+
98
+int mv88e6352_serdes_power(struct mv88e6xxx_chip *chip, int port, u8 lane,
99
+			   bool up)
57100 {
58101 	u16 val, new_val;
59102 	int err;
....@@ -62,7 +105,7 @@
62105 	if (err)
63106 		return err;
64107 
65
-	if (on)
108
+	if (up)
66109 		new_val = val & ~BMCR_PDOWN;
67110 	else
68111 		new_val = val | BMCR_PDOWN;
....@@ -73,29 +116,139 @@
73116 	return err;
74117 }
75118 
76
-static bool mv88e6352_port_has_serdes(struct mv88e6xxx_chip *chip, int port)
119
+int mv88e6352_serdes_pcs_config(struct mv88e6xxx_chip *chip, int port,
120
+				u8 lane, unsigned int mode,
121
+				phy_interface_t interface,
122
+				const unsigned long *advertise)
77123 {
78
-	u8 cmode = chip->ports[port].cmode;
79
-
80
-	if ((cmode == MV88E6XXX_PORT_STS_CMODE_100BASE_X) ||
81
-	    (cmode == MV88E6XXX_PORT_STS_CMODE_1000BASE_X) ||
82
-	    (cmode == MV88E6XXX_PORT_STS_CMODE_SGMII))
83
-		return true;
84
-
85
-	return false;
86
-}
87
-
88
-int mv88e6352_serdes_power(struct mv88e6xxx_chip *chip, int port, bool on)
89
-{
124
+	u16 adv, bmcr, val;
125
+	bool changed;
90126 	int err;
91127 
92
-	if (mv88e6352_port_has_serdes(chip, port)) {
93
-		err = mv88e6352_serdes_power_set(chip, on);
94
-		if (err < 0)
128
+	switch (interface) {
129
+	case PHY_INTERFACE_MODE_SGMII:
130
+		adv = 0x0001;
131
+		break;
132
+
133
+	case PHY_INTERFACE_MODE_1000BASEX:
134
+		adv = linkmode_adv_to_mii_adv_x(advertise,
135
+					ETHTOOL_LINK_MODE_1000baseX_Full_BIT);
136
+		break;
137
+
138
+	default:
139
+		return 0;
140
+	}
141
+
142
+	err = mv88e6352_serdes_read(chip, MII_ADVERTISE, &val);
143
+	if (err)
144
+		return err;
145
+
146
+	changed = val != adv;
147
+	if (changed) {
148
+		err = mv88e6352_serdes_write(chip, MII_ADVERTISE, adv);
149
+		if (err)
95150 			return err;
96151 	}
97152 
98
-	return 0;
153
+	err = mv88e6352_serdes_read(chip, MII_BMCR, &val);
154
+	if (err)
155
+		return err;
156
+
157
+	if (phylink_autoneg_inband(mode))
158
+		bmcr = val | BMCR_ANENABLE;
159
+	else
160
+		bmcr = val & ~BMCR_ANENABLE;
161
+
162
+	if (bmcr == val)
163
+		return changed;
164
+
165
+	return mv88e6352_serdes_write(chip, MII_BMCR, bmcr);
166
+}
167
+
168
+int mv88e6352_serdes_pcs_get_state(struct mv88e6xxx_chip *chip, int port,
169
+				   u8 lane, struct phylink_link_state *state)
170
+{
171
+	u16 lpa, status;
172
+	int err;
173
+
174
+	err = mv88e6352_serdes_read(chip, 0x11, &status);
175
+	if (err) {
176
+		dev_err(chip->dev, "can't read Serdes PHY status: %d\n", err);
177
+		return err;
178
+	}
179
+
180
+	err = mv88e6352_serdes_read(chip, MII_LPA, &lpa);
181
+	if (err) {
182
+		dev_err(chip->dev, "can't read Serdes PHY LPA: %d\n", err);
183
+		return err;
184
+	}
185
+
186
+	return mv88e6xxx_serdes_pcs_get_state(chip, status, lpa, state);
187
+}
188
+
189
+int mv88e6352_serdes_pcs_an_restart(struct mv88e6xxx_chip *chip, int port,
190
+				    u8 lane)
191
+{
192
+	u16 bmcr;
193
+	int err;
194
+
195
+	err = mv88e6352_serdes_read(chip, MII_BMCR, &bmcr);
196
+	if (err)
197
+		return err;
198
+
199
+	return mv88e6352_serdes_write(chip, MII_BMCR, bmcr | BMCR_ANRESTART);
200
+}
201
+
202
+int mv88e6352_serdes_pcs_link_up(struct mv88e6xxx_chip *chip, int port,
203
+				 u8 lane, int speed, int duplex)
204
+{
205
+	u16 val, bmcr;
206
+	int err;
207
+
208
+	err = mv88e6352_serdes_read(chip, MII_BMCR, &val);
209
+	if (err)
210
+		return err;
211
+
212
+	bmcr = val & ~(BMCR_SPEED100 | BMCR_FULLDPLX | BMCR_SPEED1000);
213
+	switch (speed) {
214
+	case SPEED_1000:
215
+		bmcr |= BMCR_SPEED1000;
216
+		break;
217
+	case SPEED_100:
218
+		bmcr |= BMCR_SPEED100;
219
+		break;
220
+	case SPEED_10:
221
+		break;
222
+	}
223
+
224
+	if (duplex == DUPLEX_FULL)
225
+		bmcr |= BMCR_FULLDPLX;
226
+
227
+	if (bmcr == val)
228
+		return 0;
229
+
230
+	return mv88e6352_serdes_write(chip, MII_BMCR, bmcr);
231
+}
232
+
233
+u8 mv88e6352_serdes_get_lane(struct mv88e6xxx_chip *chip, int port)
234
+{
235
+	u8 cmode = chip->ports[port].cmode;
236
+	u8 lane = 0;
237
+
238
+	if ((cmode == MV88E6XXX_PORT_STS_CMODE_100BASEX) ||
239
+	    (cmode == MV88E6XXX_PORT_STS_CMODE_1000BASEX) ||
240
+	    (cmode == MV88E6XXX_PORT_STS_CMODE_SGMII))
241
+		lane = 0xff; /* Unused */
242
+
243
+	return lane;
244
+}
245
+
246
+static bool mv88e6352_port_has_serdes(struct mv88e6xxx_chip *chip, int port)
247
+{
248
+	if (mv88e6xxx_serdes_get_lane(chip, port))
249
+		return true;
250
+
251
+	return false;
99252 }
100253 
101254 struct mv88e6352_serdes_hw_stat {
....@@ -185,293 +338,575 @@
185338 	return ARRAY_SIZE(mv88e6352_serdes_hw_stats);
186339 }
187340 
188
-/* Return the SERDES lane address a port is using. Only Ports 9 and 10
189
- * have SERDES lanes. Returns -ENODEV if a port does not have a lane.
190
- */
191
-static int mv88e6390_serdes_get_lane(struct mv88e6xxx_chip *chip, int port)
341
+static void mv88e6352_serdes_irq_link(struct mv88e6xxx_chip *chip, int port)
192342 {
193
-	u8 cmode = chip->ports[port].cmode;
343
+	u16 bmsr;
344
+	int err;
194345 
195
-	switch (port) {
196
-	case 9:
197
-		if (cmode == MV88E6XXX_PORT_STS_CMODE_1000BASE_X ||
198
-		    cmode == MV88E6XXX_PORT_STS_CMODE_SGMII ||
199
-		    cmode == MV88E6XXX_PORT_STS_CMODE_2500BASEX)
200
-			return MV88E6390_PORT9_LANE0;
201
-		return -ENODEV;
202
-	case 10:
203
-		if (cmode == MV88E6XXX_PORT_STS_CMODE_1000BASE_X ||
204
-		    cmode == MV88E6XXX_PORT_STS_CMODE_SGMII ||
205
-		    cmode == MV88E6XXX_PORT_STS_CMODE_2500BASEX)
206
-			return MV88E6390_PORT10_LANE0;
207
-		return -ENODEV;
208
-	default:
209
-		return -ENODEV;
346
+	/* If the link has dropped, we want to know about it. */
347
+	err = mv88e6352_serdes_read(chip, MII_BMSR, &bmsr);
348
+	if (err) {
349
+		dev_err(chip->dev, "can't read Serdes BMSR: %d\n", err);
350
+		return;
351
+	}
352
+
353
+	dsa_port_phylink_mac_change(chip->ds, port, !!(bmsr & BMSR_LSTATUS));
354
+}
355
+
356
+irqreturn_t mv88e6352_serdes_irq_status(struct mv88e6xxx_chip *chip, int port,
357
+					u8 lane)
358
+{
359
+	irqreturn_t ret = IRQ_NONE;
360
+	u16 status;
361
+	int err;
362
+
363
+	err = mv88e6352_serdes_read(chip, MV88E6352_SERDES_INT_STATUS, &status);
364
+	if (err)
365
+		return ret;
366
+
367
+	if (status & MV88E6352_SERDES_INT_LINK_CHANGE) {
368
+		ret = IRQ_HANDLED;
369
+		mv88e6352_serdes_irq_link(chip, port);
370
+	}
371
+
372
+	return ret;
373
+}
374
+
375
+int mv88e6352_serdes_irq_enable(struct mv88e6xxx_chip *chip, int port, u8 lane,
376
+				bool enable)
377
+{
378
+	u16 val = 0;
379
+
380
+	if (enable)
381
+		val |= MV88E6352_SERDES_INT_LINK_CHANGE;
382
+
383
+	return mv88e6352_serdes_write(chip, MV88E6352_SERDES_INT_ENABLE, val);
384
+}
385
+
386
+unsigned int mv88e6352_serdes_irq_mapping(struct mv88e6xxx_chip *chip, int port)
387
+{
388
+	return irq_find_mapping(chip->g2_irq.domain, MV88E6352_SERDES_IRQ);
389
+}
390
+
391
+int mv88e6352_serdes_get_regs_len(struct mv88e6xxx_chip *chip, int port)
392
+{
393
+	if (!mv88e6352_port_has_serdes(chip, port))
394
+		return 0;
395
+
396
+	return 32 * sizeof(u16);
397
+}
398
+
399
+void mv88e6352_serdes_get_regs(struct mv88e6xxx_chip *chip, int port, void *_p)
400
+{
401
+	u16 *p = _p;
402
+	u16 reg;
403
+	int i;
404
+
405
+	if (!mv88e6352_port_has_serdes(chip, port))
406
+		return;
407
+
408
+	for (i = 0 ; i < 32; i++) {
409
+		mv88e6352_serdes_read(chip, i, &reg);
410
+		p[i] = reg;
210411 	}
211412 }
212413 
213
-/* Return the SERDES lane address a port is using. Ports 9 and 10 can
214
- * use multiple lanes. If so, return the first lane the port uses.
215
- * Returns -ENODEV if a port does not have a lane.
216
- */
217
-int mv88e6390x_serdes_get_lane(struct mv88e6xxx_chip *chip, int port)
414
+u8 mv88e6341_serdes_get_lane(struct mv88e6xxx_chip *chip, int port)
218415 {
219
-	u8 cmode_port9, cmode_port10, cmode_port;
416
+	u8 cmode = chip->ports[port].cmode;
417
+	u8 lane = 0;
220418 
221
-	cmode_port9 = chip->ports[9].cmode;
222
-	cmode_port10 = chip->ports[10].cmode;
223
-	cmode_port = chip->ports[port].cmode;
419
+	switch (port) {
420
+	case 5:
421
+		if (cmode == MV88E6XXX_PORT_STS_CMODE_1000BASEX ||
422
+		    cmode == MV88E6XXX_PORT_STS_CMODE_SGMII ||
423
+		    cmode == MV88E6XXX_PORT_STS_CMODE_2500BASEX)
424
+			lane = MV88E6341_PORT5_LANE;
425
+		break;
426
+	}
427
+
428
+	return lane;
429
+}
430
+
431
+u8 mv88e6390_serdes_get_lane(struct mv88e6xxx_chip *chip, int port)
432
+{
433
+	u8 cmode = chip->ports[port].cmode;
434
+	u8 lane = 0;
435
+
436
+	switch (port) {
437
+	case 9:
438
+		if (cmode == MV88E6XXX_PORT_STS_CMODE_1000BASEX ||
439
+		    cmode == MV88E6XXX_PORT_STS_CMODE_SGMII ||
440
+		    cmode == MV88E6XXX_PORT_STS_CMODE_2500BASEX)
441
+			lane = MV88E6390_PORT9_LANE0;
442
+		break;
443
+	case 10:
444
+		if (cmode == MV88E6XXX_PORT_STS_CMODE_1000BASEX ||
445
+		    cmode == MV88E6XXX_PORT_STS_CMODE_SGMII ||
446
+		    cmode == MV88E6XXX_PORT_STS_CMODE_2500BASEX)
447
+			lane = MV88E6390_PORT10_LANE0;
448
+		break;
449
+	}
450
+
451
+	return lane;
452
+}
453
+
454
+u8 mv88e6390x_serdes_get_lane(struct mv88e6xxx_chip *chip, int port)
455
+{
456
+	u8 cmode_port = chip->ports[port].cmode;
457
+	u8 cmode_port10 = chip->ports[10].cmode;
458
+	u8 cmode_port9 = chip->ports[9].cmode;
459
+	u8 lane = 0;
224460 
225461 	switch (port) {
226462 	case 2:
227
-		if (cmode_port9 == MV88E6XXX_PORT_STS_CMODE_1000BASE_X ||
463
+		if (cmode_port9 == MV88E6XXX_PORT_STS_CMODE_1000BASEX ||
228464 		    cmode_port9 == MV88E6XXX_PORT_STS_CMODE_SGMII ||
229465 		    cmode_port9 == MV88E6XXX_PORT_STS_CMODE_2500BASEX)
230
-			if (cmode_port == MV88E6XXX_PORT_STS_CMODE_1000BASE_X)
231
-				return MV88E6390_PORT9_LANE1;
232
-		return -ENODEV;
466
+			if (cmode_port == MV88E6XXX_PORT_STS_CMODE_1000BASEX)
467
+				lane = MV88E6390_PORT9_LANE1;
468
+		break;
233469 	case 3:
234
-		if (cmode_port9 == MV88E6XXX_PORT_STS_CMODE_1000BASE_X ||
470
+		if (cmode_port9 == MV88E6XXX_PORT_STS_CMODE_1000BASEX ||
235471 		    cmode_port9 == MV88E6XXX_PORT_STS_CMODE_SGMII ||
236472 		    cmode_port9 == MV88E6XXX_PORT_STS_CMODE_2500BASEX ||
237473 		    cmode_port9 == MV88E6XXX_PORT_STS_CMODE_RXAUI)
238
-			if (cmode_port == MV88E6XXX_PORT_STS_CMODE_1000BASE_X)
239
-				return MV88E6390_PORT9_LANE2;
240
-		return -ENODEV;
474
+			if (cmode_port == MV88E6XXX_PORT_STS_CMODE_1000BASEX)
475
+				lane = MV88E6390_PORT9_LANE2;
476
+		break;
241477 	case 4:
242
-		if (cmode_port9 == MV88E6XXX_PORT_STS_CMODE_1000BASE_X ||
478
+		if (cmode_port9 == MV88E6XXX_PORT_STS_CMODE_1000BASEX ||
243479 		    cmode_port9 == MV88E6XXX_PORT_STS_CMODE_SGMII ||
244480 		    cmode_port9 == MV88E6XXX_PORT_STS_CMODE_2500BASEX ||
245481 		    cmode_port9 == MV88E6XXX_PORT_STS_CMODE_RXAUI)
246
-			if (cmode_port == MV88E6XXX_PORT_STS_CMODE_1000BASE_X)
247
-				return MV88E6390_PORT9_LANE3;
248
-		return -ENODEV;
482
+			if (cmode_port == MV88E6XXX_PORT_STS_CMODE_1000BASEX)
483
+				lane = MV88E6390_PORT9_LANE3;
484
+		break;
249485 	case 5:
250
-		if (cmode_port10 == MV88E6XXX_PORT_STS_CMODE_1000BASE_X ||
486
+		if (cmode_port10 == MV88E6XXX_PORT_STS_CMODE_1000BASEX ||
251487 		    cmode_port10 == MV88E6XXX_PORT_STS_CMODE_SGMII ||
252488 		    cmode_port10 == MV88E6XXX_PORT_STS_CMODE_2500BASEX)
253
-			if (cmode_port == MV88E6XXX_PORT_STS_CMODE_1000BASE_X)
254
-				return MV88E6390_PORT10_LANE1;
255
-		return -ENODEV;
489
+			if (cmode_port == MV88E6XXX_PORT_STS_CMODE_1000BASEX)
490
+				lane = MV88E6390_PORT10_LANE1;
491
+		break;
256492 	case 6:
257
-		if (cmode_port10 == MV88E6XXX_PORT_STS_CMODE_1000BASE_X ||
493
+		if (cmode_port10 == MV88E6XXX_PORT_STS_CMODE_1000BASEX ||
258494 		    cmode_port10 == MV88E6XXX_PORT_STS_CMODE_SGMII ||
259495 		    cmode_port10 == MV88E6XXX_PORT_STS_CMODE_2500BASEX ||
260496 		    cmode_port10 == MV88E6XXX_PORT_STS_CMODE_RXAUI)
261
-			if (cmode_port == MV88E6XXX_PORT_STS_CMODE_1000BASE_X)
262
-				return MV88E6390_PORT10_LANE2;
263
-		return -ENODEV;
497
+			if (cmode_port == MV88E6XXX_PORT_STS_CMODE_1000BASEX)
498
+				lane = MV88E6390_PORT10_LANE2;
499
+		break;
264500 	case 7:
265
-		if (cmode_port10 == MV88E6XXX_PORT_STS_CMODE_1000BASE_X ||
501
+		if (cmode_port10 == MV88E6XXX_PORT_STS_CMODE_1000BASEX ||
266502 		    cmode_port10 == MV88E6XXX_PORT_STS_CMODE_SGMII ||
267503 		    cmode_port10 == MV88E6XXX_PORT_STS_CMODE_2500BASEX ||
268504 		    cmode_port10 == MV88E6XXX_PORT_STS_CMODE_RXAUI)
269
-			if (cmode_port == MV88E6XXX_PORT_STS_CMODE_1000BASE_X)
270
-				return MV88E6390_PORT10_LANE3;
271
-		return -ENODEV;
505
+			if (cmode_port == MV88E6XXX_PORT_STS_CMODE_1000BASEX)
506
+				lane = MV88E6390_PORT10_LANE3;
507
+		break;
272508 	case 9:
273
-		if (cmode_port9 == MV88E6XXX_PORT_STS_CMODE_1000BASE_X ||
509
+		if (cmode_port9 == MV88E6XXX_PORT_STS_CMODE_1000BASEX ||
274510 		    cmode_port9 == MV88E6XXX_PORT_STS_CMODE_SGMII ||
275511 		    cmode_port9 == MV88E6XXX_PORT_STS_CMODE_2500BASEX ||
276512 		    cmode_port9 == MV88E6XXX_PORT_STS_CMODE_XAUI ||
277513 		    cmode_port9 == MV88E6XXX_PORT_STS_CMODE_RXAUI)
278
-			return MV88E6390_PORT9_LANE0;
279
-		return -ENODEV;
514
+			lane = MV88E6390_PORT9_LANE0;
515
+		break;
280516 	case 10:
281
-		if (cmode_port10 == MV88E6XXX_PORT_STS_CMODE_1000BASE_X ||
517
+		if (cmode_port10 == MV88E6XXX_PORT_STS_CMODE_1000BASEX ||
282518 		    cmode_port10 == MV88E6XXX_PORT_STS_CMODE_SGMII ||
283519 		    cmode_port10 == MV88E6XXX_PORT_STS_CMODE_2500BASEX ||
284520 		    cmode_port10 == MV88E6XXX_PORT_STS_CMODE_XAUI ||
285521 		    cmode_port10 == MV88E6XXX_PORT_STS_CMODE_RXAUI)
286
-			return MV88E6390_PORT10_LANE0;
287
-		return -ENODEV;
288
-	default:
289
-		return -ENODEV;
522
+			lane = MV88E6390_PORT10_LANE0;
523
+		break;
290524 	}
525
+
526
+	return lane;
291527 }
292528 
293
-/* Set the power on/off for 10GBASE-R and 10GBASE-X4/X2 */
294
-static int mv88e6390_serdes_power_10g(struct mv88e6xxx_chip *chip, int lane,
295
-				      bool on)
529
+/* Set power up/down for 10GBASE-R and 10GBASE-X4/X2 */
530
+static int mv88e6390_serdes_power_10g(struct mv88e6xxx_chip *chip, u8 lane,
531
+				      bool up)
296532 {
297533 	u16 val, new_val;
298534 	int err;
299535 
300536 	err = mv88e6390_serdes_read(chip, lane, MDIO_MMD_PHYXS,
301
-				    MV88E6390_PCS_CONTROL_1, &val);
537
+				    MV88E6390_10G_CTRL1, &val);
302538 
303539 	if (err)
304540 		return err;
305541 
306
-	if (on)
307
-		new_val = val & ~(MV88E6390_PCS_CONTROL_1_RESET |
308
-				  MV88E6390_PCS_CONTROL_1_LOOPBACK |
309
-				  MV88E6390_PCS_CONTROL_1_PDOWN);
542
+	if (up)
543
+		new_val = val & ~(MDIO_CTRL1_RESET |
544
+				  MDIO_PCS_CTRL1_LOOPBACK |
545
+				  MDIO_CTRL1_LPOWER);
310546 	else
311
-		new_val = val | MV88E6390_PCS_CONTROL_1_PDOWN;
547
+		new_val = val | MDIO_CTRL1_LPOWER;
312548 
313549 	if (val != new_val)
314550 		err = mv88e6390_serdes_write(chip, lane, MDIO_MMD_PHYXS,
315
-					     MV88E6390_PCS_CONTROL_1, new_val);
551
+					     MV88E6390_10G_CTRL1, new_val);
316552 
317553 	return err;
318554 }
319555 
320
-/* Set the power on/off for SGMII and 1000Base-X */
321
-static int mv88e6390_serdes_power_sgmii(struct mv88e6xxx_chip *chip, int lane,
322
-					bool on)
556
+/* Set power up/down for SGMII and 1000Base-X */
557
+static int mv88e6390_serdes_power_sgmii(struct mv88e6xxx_chip *chip, u8 lane,
558
+					bool up)
323559 {
324560 	u16 val, new_val;
325561 	int err;
326562 
327563 	err = mv88e6390_serdes_read(chip, lane, MDIO_MMD_PHYXS,
328
-				    MV88E6390_SGMII_CONTROL, &val);
564
+				    MV88E6390_SGMII_BMCR, &val);
329565 	if (err)
330566 		return err;
331567 
332
-	if (on)
333
-		new_val = val & ~(MV88E6390_SGMII_CONTROL_RESET |
334
-				  MV88E6390_SGMII_CONTROL_LOOPBACK |
335
-				  MV88E6390_SGMII_CONTROL_PDOWN);
568
+	if (up)
569
+		new_val = val & ~(BMCR_RESET | BMCR_LOOPBACK | BMCR_PDOWN);
336570 	else
337
-		new_val = val | MV88E6390_SGMII_CONTROL_PDOWN;
571
+		new_val = val | BMCR_PDOWN;
338572 
339573 	if (val != new_val)
340574 		err = mv88e6390_serdes_write(chip, lane, MDIO_MMD_PHYXS,
341
-					     MV88E6390_SGMII_CONTROL, new_val);
575
+					     MV88E6390_SGMII_BMCR, new_val);
342576 
343577 	return err;
344578 }
345579 
346
-static int mv88e6390_serdes_power_lane(struct mv88e6xxx_chip *chip, int port,
347
-				       int lane, bool on)
580
+struct mv88e6390_serdes_hw_stat {
581
+	char string[ETH_GSTRING_LEN];
582
+	int reg;
583
+};
584
+
585
+static struct mv88e6390_serdes_hw_stat mv88e6390_serdes_hw_stats[] = {
586
+	{ "serdes_rx_pkts", 0xf021 },
587
+	{ "serdes_rx_bytes", 0xf024 },
588
+	{ "serdes_rx_pkts_error", 0xf027 },
589
+};
590
+
591
+int mv88e6390_serdes_get_sset_count(struct mv88e6xxx_chip *chip, int port)
592
+{
593
+	if (mv88e6xxx_serdes_get_lane(chip, port) == 0)
594
+		return 0;
595
+
596
+	return ARRAY_SIZE(mv88e6390_serdes_hw_stats);
597
+}
598
+
599
+int mv88e6390_serdes_get_strings(struct mv88e6xxx_chip *chip,
600
+				 int port, uint8_t *data)
601
+{
602
+	struct mv88e6390_serdes_hw_stat *stat;
603
+	int i;
604
+
605
+	if (mv88e6xxx_serdes_get_lane(chip, port) == 0)
606
+		return 0;
607
+
608
+	for (i = 0; i < ARRAY_SIZE(mv88e6390_serdes_hw_stats); i++) {
609
+		stat = &mv88e6390_serdes_hw_stats[i];
610
+		memcpy(data + i * ETH_GSTRING_LEN, stat->string,
611
+		       ETH_GSTRING_LEN);
612
+	}
613
+	return ARRAY_SIZE(mv88e6390_serdes_hw_stats);
614
+}
615
+
616
+static uint64_t mv88e6390_serdes_get_stat(struct mv88e6xxx_chip *chip, int lane,
617
+					  struct mv88e6390_serdes_hw_stat *stat)
618
+{
619
+	u16 reg[3];
620
+	int err, i;
621
+
622
+	for (i = 0; i < 3; i++) {
623
+		err = mv88e6390_serdes_read(chip, lane, MDIO_MMD_PHYXS,
624
+					    stat->reg + i, &reg[i]);
625
+		if (err) {
626
+			dev_err(chip->dev, "failed to read statistic\n");
627
+			return 0;
628
+		}
629
+	}
630
+
631
+	return reg[0] | ((u64)reg[1] << 16) | ((u64)reg[2] << 32);
632
+}
633
+
634
+int mv88e6390_serdes_get_stats(struct mv88e6xxx_chip *chip, int port,
635
+			       uint64_t *data)
636
+{
637
+	struct mv88e6390_serdes_hw_stat *stat;
638
+	int lane;
639
+	int i;
640
+
641
+	lane = mv88e6xxx_serdes_get_lane(chip, port);
642
+	if (lane == 0)
643
+		return 0;
644
+
645
+	for (i = 0; i < ARRAY_SIZE(mv88e6390_serdes_hw_stats); i++) {
646
+		stat = &mv88e6390_serdes_hw_stats[i];
647
+		data[i] = mv88e6390_serdes_get_stat(chip, lane, stat);
648
+	}
649
+
650
+	return ARRAY_SIZE(mv88e6390_serdes_hw_stats);
651
+}
652
+
653
+static int mv88e6390_serdes_enable_checker(struct mv88e6xxx_chip *chip, u8 lane)
654
+{
655
+	u16 reg;
656
+	int err;
657
+
658
+	err = mv88e6390_serdes_read(chip, lane, MDIO_MMD_PHYXS,
659
+				    MV88E6390_PG_CONTROL, &reg);
660
+	if (err)
661
+		return err;
662
+
663
+	reg |= MV88E6390_PG_CONTROL_ENABLE_PC;
664
+	return mv88e6390_serdes_write(chip, lane, MDIO_MMD_PHYXS,
665
+				      MV88E6390_PG_CONTROL, reg);
666
+}
667
+
668
+int mv88e6390_serdes_power(struct mv88e6xxx_chip *chip, int port, u8 lane,
669
+			   bool up)
348670 {
349671 	u8 cmode = chip->ports[port].cmode;
672
+	int err = 0;
350673 
351674 	switch (cmode) {
352675 	case MV88E6XXX_PORT_STS_CMODE_SGMII:
353
-	case MV88E6XXX_PORT_STS_CMODE_1000BASE_X:
676
+	case MV88E6XXX_PORT_STS_CMODE_1000BASEX:
354677 	case MV88E6XXX_PORT_STS_CMODE_2500BASEX:
355
-		return mv88e6390_serdes_power_sgmii(chip, lane, on);
678
+		err = mv88e6390_serdes_power_sgmii(chip, lane, up);
679
+		break;
356680 	case MV88E6XXX_PORT_STS_CMODE_XAUI:
357681 	case MV88E6XXX_PORT_STS_CMODE_RXAUI:
358
-		return mv88e6390_serdes_power_10g(chip, lane, on);
682
+		err = mv88e6390_serdes_power_10g(chip, lane, up);
683
+		break;
684
+	}
685
+
686
+	if (!err && up)
687
+		err = mv88e6390_serdes_enable_checker(chip, lane);
688
+
689
+	return err;
690
+}
691
+
692
+int mv88e6390_serdes_pcs_config(struct mv88e6xxx_chip *chip, int port,
693
+				u8 lane, unsigned int mode,
694
+				phy_interface_t interface,
695
+				const unsigned long *advertise)
696
+{
697
+	u16 val, bmcr, adv;
698
+	bool changed;
699
+	int err;
700
+
701
+	switch (interface) {
702
+	case PHY_INTERFACE_MODE_SGMII:
703
+		adv = 0x0001;
704
+		break;
705
+
706
+	case PHY_INTERFACE_MODE_1000BASEX:
707
+		adv = linkmode_adv_to_mii_adv_x(advertise,
708
+					ETHTOOL_LINK_MODE_1000baseX_Full_BIT);
709
+		break;
710
+
711
+	case PHY_INTERFACE_MODE_2500BASEX:
712
+		adv = linkmode_adv_to_mii_adv_x(advertise,
713
+					ETHTOOL_LINK_MODE_2500baseX_Full_BIT);
714
+		break;
715
+
716
+	default:
717
+		return 0;
718
+	}
719
+
720
+	err = mv88e6390_serdes_read(chip, lane, MDIO_MMD_PHYXS,
721
+				    MV88E6390_SGMII_ADVERTISE, &val);
722
+	if (err)
723
+		return err;
724
+
725
+	changed = val != adv;
726
+	if (changed) {
727
+		err = mv88e6390_serdes_write(chip, lane, MDIO_MMD_PHYXS,
728
+					     MV88E6390_SGMII_ADVERTISE, adv);
729
+		if (err)
730
+			return err;
731
+	}
732
+
733
+	err = mv88e6390_serdes_read(chip, lane, MDIO_MMD_PHYXS,
734
+				    MV88E6390_SGMII_BMCR, &val);
735
+	if (err)
736
+		return err;
737
+
738
+	if (phylink_autoneg_inband(mode))
739
+		bmcr = val | BMCR_ANENABLE;
740
+	else
741
+		bmcr = val & ~BMCR_ANENABLE;
742
+
743
+	/* setting ANENABLE triggers a restart of negotiation */
744
+	if (bmcr == val)
745
+		return changed;
746
+
747
+	return mv88e6390_serdes_write(chip, lane, MDIO_MMD_PHYXS,
748
+				      MV88E6390_SGMII_BMCR, bmcr);
749
+}
750
+
751
+static int mv88e6390_serdes_pcs_get_state_sgmii(struct mv88e6xxx_chip *chip,
752
+	int port, u8 lane, struct phylink_link_state *state)
753
+{
754
+	u16 lpa, status;
755
+	int err;
756
+
757
+	err = mv88e6390_serdes_read(chip, lane, MDIO_MMD_PHYXS,
758
+				    MV88E6390_SGMII_PHY_STATUS, &status);
759
+	if (err) {
760
+		dev_err(chip->dev, "can't read Serdes PHY status: %d\n", err);
761
+		return err;
762
+	}
763
+
764
+	err = mv88e6390_serdes_read(chip, lane, MDIO_MMD_PHYXS,
765
+				    MV88E6390_SGMII_LPA, &lpa);
766
+	if (err) {
767
+		dev_err(chip->dev, "can't read Serdes PHY LPA: %d\n", err);
768
+		return err;
769
+	}
770
+
771
+	return mv88e6xxx_serdes_pcs_get_state(chip, status, lpa, state);
772
+}
773
+
774
+static int mv88e6390_serdes_pcs_get_state_10g(struct mv88e6xxx_chip *chip,
775
+	int port, u8 lane, struct phylink_link_state *state)
776
+{
777
+	u16 status;
778
+	int err;
779
+
780
+	err = mv88e6390_serdes_read(chip, lane, MDIO_MMD_PHYXS,
781
+				    MV88E6390_10G_STAT1, &status);
782
+	if (err)
783
+		return err;
784
+
785
+	state->link = !!(status & MDIO_STAT1_LSTATUS);
786
+	if (state->link) {
787
+		state->speed = SPEED_10000;
788
+		state->duplex = DUPLEX_FULL;
359789 	}
360790 
361791 	return 0;
362792 }
363793 
364
-int mv88e6390_serdes_power(struct mv88e6xxx_chip *chip, int port, bool on)
794
+int mv88e6390_serdes_pcs_get_state(struct mv88e6xxx_chip *chip, int port,
795
+				   u8 lane, struct phylink_link_state *state)
365796 {
366
-	int lane;
797
+	switch (state->interface) {
798
+	case PHY_INTERFACE_MODE_SGMII:
799
+	case PHY_INTERFACE_MODE_1000BASEX:
800
+	case PHY_INTERFACE_MODE_2500BASEX:
801
+		return mv88e6390_serdes_pcs_get_state_sgmii(chip, port, lane,
802
+							    state);
803
+	case PHY_INTERFACE_MODE_XAUI:
804
+	case PHY_INTERFACE_MODE_RXAUI:
805
+		return mv88e6390_serdes_pcs_get_state_10g(chip, port, lane,
806
+							  state);
367807 
368
-	lane = mv88e6390_serdes_get_lane(chip, port);
369
-	if (lane == -ENODEV)
370
-		return 0;
371
-
372
-	if (lane < 0)
373
-		return lane;
374
-
375
-	switch (port) {
376
-	case 9 ... 10:
377
-		return mv88e6390_serdes_power_lane(chip, port, lane, on);
808
+	default:
809
+		return -EOPNOTSUPP;
378810 	}
379
-
380
-	return 0;
381811 }
382812 
383
-int mv88e6390x_serdes_power(struct mv88e6xxx_chip *chip, int port, bool on)
813
+int mv88e6390_serdes_pcs_an_restart(struct mv88e6xxx_chip *chip, int port,
814
+				    u8 lane)
384815 {
385
-	int lane;
816
+	u16 bmcr;
817
+	int err;
386818 
387
-	lane = mv88e6390x_serdes_get_lane(chip, port);
388
-	if (lane == -ENODEV)
389
-		return 0;
819
+	err = mv88e6390_serdes_read(chip, lane, MDIO_MMD_PHYXS,
820
+				    MV88E6390_SGMII_BMCR, &bmcr);
821
+	if (err)
822
+		return err;
390823 
391
-	if (lane < 0)
392
-		return lane;
824
+	return mv88e6390_serdes_write(chip, lane, MDIO_MMD_PHYXS,
825
+				      MV88E6390_SGMII_BMCR,
826
+				      bmcr | BMCR_ANRESTART);
827
+}
393828 
394
-	switch (port) {
395
-	case 2 ... 4:
396
-	case 5 ... 7:
397
-	case 9 ... 10:
398
-		return mv88e6390_serdes_power_lane(chip, port, lane, on);
829
+int mv88e6390_serdes_pcs_link_up(struct mv88e6xxx_chip *chip, int port,
830
+				 u8 lane, int speed, int duplex)
831
+{
832
+	u16 val, bmcr;
833
+	int err;
834
+
835
+	err = mv88e6390_serdes_read(chip, lane, MDIO_MMD_PHYXS,
836
+				    MV88E6390_SGMII_BMCR, &val);
837
+	if (err)
838
+		return err;
839
+
840
+	bmcr = val & ~(BMCR_SPEED100 | BMCR_FULLDPLX | BMCR_SPEED1000);
841
+	switch (speed) {
842
+	case SPEED_2500:
843
+	case SPEED_1000:
844
+		bmcr |= BMCR_SPEED1000;
845
+		break;
846
+	case SPEED_100:
847
+		bmcr |= BMCR_SPEED100;
848
+		break;
849
+	case SPEED_10:
850
+		break;
399851 	}
400852 
401
-	return 0;
853
+	if (duplex == DUPLEX_FULL)
854
+		bmcr |= BMCR_FULLDPLX;
855
+
856
+	if (bmcr == val)
857
+		return 0;
858
+
859
+	return mv88e6390_serdes_write(chip, lane, MDIO_MMD_PHYXS,
860
+				      MV88E6390_SGMII_BMCR, bmcr);
402861 }
403862 
404863 static void mv88e6390_serdes_irq_link_sgmii(struct mv88e6xxx_chip *chip,
405
-					    int port, int lane)
864
+					    int port, u8 lane)
406865 {
407
-	struct dsa_switch *ds = chip->ds;
408
-	u16 status;
409
-	bool up;
866
+	u16 bmsr;
867
+	int err;
410868 
411
-	mv88e6390_serdes_read(chip, lane, MDIO_MMD_PHYXS,
412
-			      MV88E6390_SGMII_STATUS, &status);
869
+	/* If the link has dropped, we want to know about it. */
870
+	err = mv88e6390_serdes_read(chip, lane, MDIO_MMD_PHYXS,
871
+				    MV88E6390_SGMII_BMSR, &bmsr);
872
+	if (err) {
873
+		dev_err(chip->dev, "can't read Serdes BMSR: %d\n", err);
874
+		return;
875
+	}
413876 
414
-	/* Status must be read twice in order to give the current link
415
-	 * status. Otherwise the change in link status since the last
416
-	 * read of the register is returned.
417
-	 */
418
-	mv88e6390_serdes_read(chip, lane, MDIO_MMD_PHYXS,
419
-			      MV88E6390_SGMII_STATUS, &status);
420
-	up = status & MV88E6390_SGMII_STATUS_LINK;
421
-
422
-	dsa_port_phylink_mac_change(ds, port, up);
877
+	dsa_port_phylink_mac_change(chip->ds, port, !!(bmsr & BMSR_LSTATUS));
423878 }
424879 
425880 static int mv88e6390_serdes_irq_enable_sgmii(struct mv88e6xxx_chip *chip,
426
-					     int lane)
881
+					     u8 lane, bool enable)
427882 {
883
+	u16 val = 0;
884
+
885
+	if (enable)
886
+		val |= MV88E6390_SGMII_INT_LINK_DOWN |
887
+			MV88E6390_SGMII_INT_LINK_UP;
888
+
428889 	return mv88e6390_serdes_write(chip, lane, MDIO_MMD_PHYXS,
429
-				      MV88E6390_SGMII_INT_ENABLE,
430
-				      MV88E6390_SGMII_INT_LINK_DOWN |
431
-				      MV88E6390_SGMII_INT_LINK_UP);
890
+				      MV88E6390_SGMII_INT_ENABLE, val);
432891 }
433892 
434
-static int mv88e6390_serdes_irq_disable_sgmii(struct mv88e6xxx_chip *chip,
435
-					      int lane)
436
-{
437
-	return mv88e6390_serdes_write(chip, lane, MDIO_MMD_PHYXS,
438
-				      MV88E6390_SGMII_INT_ENABLE, 0);
439
-}
440
-
441
-int mv88e6390_serdes_irq_enable(struct mv88e6xxx_chip *chip, int port,
442
-				int lane)
893
+int mv88e6390_serdes_irq_enable(struct mv88e6xxx_chip *chip, int port, u8 lane,
894
+				bool enable)
443895 {
444896 	u8 cmode = chip->ports[port].cmode;
445
-	int err = 0;
446897 
447898 	switch (cmode) {
448899 	case MV88E6XXX_PORT_STS_CMODE_SGMII:
449
-	case MV88E6XXX_PORT_STS_CMODE_1000BASE_X:
900
+	case MV88E6XXX_PORT_STS_CMODE_1000BASEX:
450901 	case MV88E6XXX_PORT_STS_CMODE_2500BASEX:
451
-		err = mv88e6390_serdes_irq_enable_sgmii(chip, lane);
902
+		return mv88e6390_serdes_irq_enable_sgmii(chip, lane, enable);
452903 	}
453904 
454
-	return err;
455
-}
456
-
457
-int mv88e6390_serdes_irq_disable(struct mv88e6xxx_chip *chip, int port,
458
-				 int lane)
459
-{
460
-	u8 cmode = chip->ports[port].cmode;
461
-	int err = 0;
462
-
463
-	switch (cmode) {
464
-	case MV88E6XXX_PORT_STS_CMODE_SGMII:
465
-	case MV88E6XXX_PORT_STS_CMODE_1000BASE_X:
466
-	case MV88E6XXX_PORT_STS_CMODE_2500BASEX:
467
-		err = mv88e6390_serdes_irq_disable_sgmii(chip, lane);
468
-	}
469
-
470
-	return err;
905
+	return 0;
471906 }
472907 
473908 static int mv88e6390_serdes_irq_status_sgmii(struct mv88e6xxx_chip *chip,
474
-					     int lane, u16 *status)
909
+					     u8 lane, u16 *status)
475910 {
476911 	int err;
477912 
....@@ -481,117 +916,86 @@
481916 	return err;
482917 }
483918 
484
-static irqreturn_t mv88e6390_serdes_thread_fn(int irq, void *dev_id)
919
+irqreturn_t mv88e6390_serdes_irq_status(struct mv88e6xxx_chip *chip, int port,
920
+					u8 lane)
485921 {
486
-	struct mv88e6xxx_port *port = dev_id;
487
-	struct mv88e6xxx_chip *chip = port->chip;
922
+	u8 cmode = chip->ports[port].cmode;
488923 	irqreturn_t ret = IRQ_NONE;
489
-	u8 cmode = port->cmode;
490924 	u16 status;
491
-	int lane;
492925 	int err;
493
-
494
-	lane = mv88e6390x_serdes_get_lane(chip, port->port);
495
-
496
-	mutex_lock(&chip->reg_lock);
497926 
498927 	switch (cmode) {
499928 	case MV88E6XXX_PORT_STS_CMODE_SGMII:
500
-	case MV88E6XXX_PORT_STS_CMODE_1000BASE_X:
929
+	case MV88E6XXX_PORT_STS_CMODE_1000BASEX:
501930 	case MV88E6XXX_PORT_STS_CMODE_2500BASEX:
502931 		err = mv88e6390_serdes_irq_status_sgmii(chip, lane, &status);
503932 		if (err)
504
-			goto out;
933
+			return ret;
505934 		if (status & (MV88E6390_SGMII_INT_LINK_DOWN |
506935 			      MV88E6390_SGMII_INT_LINK_UP)) {
507936 			ret = IRQ_HANDLED;
508
-			mv88e6390_serdes_irq_link_sgmii(chip, port->port, lane);
937
+			mv88e6390_serdes_irq_link_sgmii(chip, port, lane);
509938 		}
510939 	}
511
-out:
512
-	mutex_unlock(&chip->reg_lock);
513940 
514941 	return ret;
515942 }
516943 
517
-int mv88e6390_serdes_irq_setup(struct mv88e6xxx_chip *chip, int port)
944
+unsigned int mv88e6390_serdes_irq_mapping(struct mv88e6xxx_chip *chip, int port)
518945 {
946
+	return irq_find_mapping(chip->g2_irq.domain, port);
947
+}
948
+
949
+static const u16 mv88e6390_serdes_regs[] = {
950
+	/* SERDES common registers */
951
+	0xf00a, 0xf00b, 0xf00c,
952
+	0xf010, 0xf011, 0xf012, 0xf013,
953
+	0xf016, 0xf017, 0xf018,
954
+	0xf01b, 0xf01c, 0xf01d, 0xf01e, 0xf01f,
955
+	0xf020, 0xf021, 0xf022, 0xf023, 0xf024, 0xf025, 0xf026, 0xf027,
956
+	0xf028, 0xf029,
957
+	0xf030, 0xf031, 0xf032, 0xf033, 0xf034, 0xf035, 0xf036, 0xf037,
958
+	0xf038, 0xf039,
959
+	/* SGMII */
960
+	0x2000, 0x2001, 0x2002, 0x2003, 0x2004, 0x2005, 0x2006, 0x2007,
961
+	0x2008,
962
+	0x200f,
963
+	0xa000, 0xa001, 0xa002, 0xa003,
964
+	/* 10Gbase-X */
965
+	0x1000, 0x1001, 0x1002, 0x1003, 0x1004, 0x1005, 0x1006, 0x1007,
966
+	0x1008,
967
+	0x100e, 0x100f,
968
+	0x1018, 0x1019,
969
+	0x9000, 0x9001, 0x9002, 0x9003, 0x9004,
970
+	0x9006,
971
+	0x9010, 0x9011, 0x9012, 0x9013, 0x9014, 0x9015, 0x9016,
972
+	/* 10Gbase-R */
973
+	0x1020, 0x1021, 0x1022, 0x1023, 0x1024, 0x1025, 0x1026, 0x1027,
974
+	0x1028, 0x1029, 0x102a, 0x102b,
975
+};
976
+
977
+int mv88e6390_serdes_get_regs_len(struct mv88e6xxx_chip *chip, int port)
978
+{
979
+	if (mv88e6xxx_serdes_get_lane(chip, port) == 0)
980
+		return 0;
981
+
982
+	return ARRAY_SIZE(mv88e6390_serdes_regs) * sizeof(u16);
983
+}
984
+
985
+void mv88e6390_serdes_get_regs(struct mv88e6xxx_chip *chip, int port, void *_p)
986
+{
987
+	u16 *p = _p;
519988 	int lane;
520
-	int err;
989
+	u16 reg;
990
+	int i;
521991 
522
-	/* Only support ports 9 and 10 at the moment */
523
-	if (port < 9)
524
-		return 0;
525
-
526
-	lane = mv88e6390x_serdes_get_lane(chip, port);
527
-
528
-	if (lane == -ENODEV)
529
-		return 0;
530
-
531
-	if (lane < 0)
532
-		return lane;
533
-
534
-	chip->ports[port].serdes_irq = irq_find_mapping(chip->g2_irq.domain,
535
-							port);
536
-	if (chip->ports[port].serdes_irq < 0) {
537
-		dev_err(chip->dev, "Unable to map SERDES irq: %d\n",
538
-			chip->ports[port].serdes_irq);
539
-		return chip->ports[port].serdes_irq;
540
-	}
541
-
542
-	/* Requesting the IRQ will trigger irq callbacks. So we cannot
543
-	 * hold the reg_lock.
544
-	 */
545
-	mutex_unlock(&chip->reg_lock);
546
-	err = request_threaded_irq(chip->ports[port].serdes_irq, NULL,
547
-				   mv88e6390_serdes_thread_fn,
548
-				   IRQF_ONESHOT, "mv88e6xxx-serdes",
549
-				   &chip->ports[port]);
550
-	mutex_lock(&chip->reg_lock);
551
-
552
-	if (err) {
553
-		dev_err(chip->dev, "Unable to request SERDES interrupt: %d\n",
554
-			err);
555
-		return err;
556
-	}
557
-
558
-	return mv88e6390_serdes_irq_enable(chip, port, lane);
559
-}
560
-
561
-void mv88e6390_serdes_irq_free(struct mv88e6xxx_chip *chip, int port)
562
-{
563
-	int lane = mv88e6390x_serdes_get_lane(chip, port);
564
-
565
-	if (port < 9)
992
+	lane = mv88e6xxx_serdes_get_lane(chip, port);
993
+	if (lane == 0)
566994 		return;
567995 
568
-	if (lane < 0)
569
-		return;
570
-
571
-	mv88e6390_serdes_irq_disable(chip, port, lane);
572
-
573
-	/* Freeing the IRQ will trigger irq callbacks. So we cannot
574
-	 * hold the reg_lock.
575
-	 */
576
-	mutex_unlock(&chip->reg_lock);
577
-	free_irq(chip->ports[port].serdes_irq, &chip->ports[port]);
578
-	mutex_lock(&chip->reg_lock);
579
-
580
-	chip->ports[port].serdes_irq = 0;
581
-}
582
-
583
-int mv88e6341_serdes_power(struct mv88e6xxx_chip *chip, int port, bool on)
584
-{
585
-	u8 cmode = chip->ports[port].cmode;
586
-
587
-	if (port != 5)
588
-		return 0;
589
-
590
-	if (cmode == MV88E6XXX_PORT_STS_CMODE_1000BASE_X ||
591
-	    cmode == MV88E6XXX_PORT_STS_CMODE_SGMII ||
592
-	    cmode == MV88E6XXX_PORT_STS_CMODE_2500BASEX)
593
-		return mv88e6390_serdes_power_sgmii(chip, MV88E6341_ADDR_SERDES,
594
-						    on);
595
-
596
-	return 0;
996
+	for (i = 0 ; i < ARRAY_SIZE(mv88e6390_serdes_regs); i++) {
997
+		mv88e6390_serdes_read(chip, lane, MDIO_MMD_PHYXS,
998
+				      mv88e6390_serdes_regs[i], &reg);
999
+		p[i] = reg;
1000
+	}
5971001 }