mk-rootfs.sh

hc

2023-12-11 072de836f53be56a70cecf70b43ae43b7ce17376

 kernel/drivers/hwmon/pmbus/ltc2978.c
..
..
@@ -1,19 +1,11 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
1
2
 /*
2
3
  * Hardware monitoring driver for LTC2978 and compatible chips.
3
4
  *
4
5
  * Copyright (c) 2011 Ericsson AB.
5
6
  * Copyright (c) 2013, 2014, 2015 Guenter Roeck
6
7
  * Copyright (c) 2015 Linear Technology
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.
12
- *
13
- * This program is distributed in the hope that it will be useful,
14
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
15
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16
- * GNU General Public License for more details.
8
+ * Copyright (c) 2018 Analog Devices Inc.
17
9
  */
18
10
 
19
11
 #include <linux/delay.h>
..
..
@@ -27,8 +19,15 @@
27
19
 #include <linux/regulator/driver.h>
28
20
 #include "pmbus.h"
29
21
 
30
-enum chips { ltc2974, ltc2975, ltc2977, ltc2978, ltc2980, ltc3880, ltc3882,
31
-	ltc3883, ltc3886, ltc3887, ltm2987, ltm4675, ltm4676 };
22
+enum chips {
23
+	/* Managers */
24
+	ltc2972, ltc2974, ltc2975, ltc2977, ltc2978, ltc2979, ltc2980,
25
+	/* Controllers */
26
+	ltc3880, ltc3882, ltc3883, ltc3884, ltc3886, ltc3887, ltc3889, ltc7880,
27
+	/* Modules */
28
+	ltm2987, ltm4664, ltm4675, ltm4676, ltm4677, ltm4678, ltm4680, ltm4686,
29
+	ltm4700,
30
+};
32
31
 
33
32
 /* Common for all chips */
34
33
 #define LTC2978_MFR_VOUT_PEAK		0xdd
..
..
@@ -51,8 +50,9 @@
51
50
 #define LTC3880_MFR_CLEAR_PEAKS		0xe3
52
51
 #define LTC3880_MFR_TEMPERATURE2_PEAK	0xf4
53
52
 
54
-/* LTC3883 and LTC3886 only */
53
+/* LTC3883, LTC3884, LTC3886, LTC3889 and LTC7880 only */
55
54
 #define LTC3883_MFR_IIN_PEAK		0xe1
55
+
56
56
 
57
57
 /* LTC2975 only */
58
58
 #define LTC2975_MFR_IIN_PEAK		0xc4
..
..
@@ -62,26 +62,41 @@
62
62
 
63
63
 #define LTC2978_ID_MASK			0xfff0
64
64
 
65
+#define LTC2972_ID			0x0310
65
66
 #define LTC2974_ID			0x0210
66
67
 #define LTC2975_ID			0x0220
67
68
 #define LTC2977_ID			0x0130
68
69
 #define LTC2978_ID_REV1			0x0110	/* Early revision */
69
70
 #define LTC2978_ID_REV2			0x0120
71
+#define LTC2979_ID_A			0x8060
72
+#define LTC2979_ID_B			0x8070
70
73
 #define LTC2980_ID_A			0x8030	/* A/B for two die IDs */
71
74
 #define LTC2980_ID_B			0x8040
72
75
 #define LTC3880_ID			0x4020
73
76
 #define LTC3882_ID			0x4200
74
77
 #define LTC3882_ID_D1			0x4240	/* Dash 1 */
75
78
 #define LTC3883_ID			0x4300
79
+#define LTC3884_ID			0x4C00
76
80
 #define LTC3886_ID			0x4600
77
81
 #define LTC3887_ID			0x4700
78
82
 #define LTM2987_ID_A			0x8010	/* A/B for two die IDs */
79
83
 #define LTM2987_ID_B			0x8020
84
+#define LTC3889_ID			0x4900
85
+#define LTC7880_ID			0x49E0
86
+#define LTM4664_ID			0x4120
80
87
 #define LTM4675_ID			0x47a0
81
88
 #define LTM4676_ID_REV1			0x4400
82
89
 #define LTM4676_ID_REV2			0x4480
83
90
 #define LTM4676A_ID			0x47e0
91
+#define LTM4677_ID_REV1			0x47B0
92
+#define LTM4677_ID_REV2			0x47D0
93
+#define LTM4678_ID_REV1			0x4100
94
+#define LTM4678_ID_REV2			0x4110
95
+#define LTM4680_ID			0x4140
96
+#define LTM4686_ID			0x4770
97
+#define LTM4700_ID			0x4130
84
98
 
99
+#define LTC2972_NUM_PAGES		2
85
100
 #define LTC2974_NUM_PAGES		4
86
101
 #define LTC2978_NUM_PAGES		8
87
102
 #define LTC3880_NUM_PAGES		2
..
..
@@ -158,7 +173,8 @@
158
173
 	return -ETIMEDOUT;
159
174
 }
160
175
 
161
-static int ltc_read_word_data(struct i2c_client *client, int page, int reg)
176
+static int ltc_read_word_data(struct i2c_client *client, int page, int phase,
177
+			      int reg)
162
178
 {
163
179
 	int ret;
164
180
 
..
..
@@ -166,7 +182,7 @@
166
182
 	if (ret < 0)
167
183
 		return ret;
168
184
 
169
-	return pmbus_read_word_data(client, page, reg);
185
+	return pmbus_read_word_data(client, page, 0xff, reg);
170
186
 }
171
187
 
172
188
 static int ltc_read_byte_data(struct i2c_client *client, int page, int reg)
..
..
@@ -209,7 +225,7 @@
209
225
 {
210
226
 	int ret;
211
227
 
212
-	ret = ltc_read_word_data(client, page, reg);
228
+	ret = ltc_read_word_data(client, page, 0xff, reg);
213
229
 	if (ret >= 0) {
214
230
 		if (lin11_to_val(ret) > lin11_to_val(*pmax))
215
231
 			*pmax = ret;
..
..
@@ -223,7 +239,7 @@
223
239
 {
224
240
 	int ret;
225
241
 
226
-	ret = ltc_read_word_data(client, page, reg);
242
+	ret = ltc_read_word_data(client, page, 0xff, reg);
227
243
 	if (ret >= 0) {
228
244
 		if (lin11_to_val(ret) < lin11_to_val(*pmin))
229
245
 			*pmin = ret;
..
..
@@ -245,7 +261,8 @@
245
261
 				  &data->vin_max);
246
262
 		break;
247
263
 	case PMBUS_VIRT_READ_VOUT_MAX:
248
-		ret = ltc_read_word_data(client, page, LTC2978_MFR_VOUT_PEAK);
264
+		ret = ltc_read_word_data(client, page, 0xff,
265
+					 LTC2978_MFR_VOUT_PEAK);
249
266
 		if (ret >= 0) {
250
267
 			/*
251
268
 			 * VOUT is 16 bit unsigned with fixed exponent,
..
..
@@ -276,7 +293,8 @@
276
293
 	return ret;
277
294
 }
278
295
 
279
-static int ltc2978_read_word_data(struct i2c_client *client, int page, int reg)
296
+static int ltc2978_read_word_data(struct i2c_client *client, int page,
297
+				  int phase, int reg)
280
298
 {
281
299
 	const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
282
300
 	struct ltc2978_data *data = to_ltc2978_data(info);
..
..
@@ -288,7 +306,8 @@
288
306
 				  &data->vin_min);
289
307
 		break;
290
308
 	case PMBUS_VIRT_READ_VOUT_MIN:
291
-		ret = ltc_read_word_data(client, page, LTC2978_MFR_VOUT_MIN);
309
+		ret = ltc_read_word_data(client, page, phase,
310
+					 LTC2978_MFR_VOUT_MIN);
292
311
 		if (ret >= 0) {
293
312
 			/*
294
313
 			 * VOUT_MIN is known to not be supported on some lots
..
..
@@ -321,7 +340,8 @@
321
340
 	return ret;
322
341
 }
323
342
 
324
-static int ltc2974_read_word_data(struct i2c_client *client, int page, int reg)
343
+static int ltc2974_read_word_data(struct i2c_client *client, int page,
344
+				  int phase, int reg)
325
345
 {
326
346
 	const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
327
347
 	struct ltc2978_data *data = to_ltc2978_data(info);
..
..
@@ -340,13 +360,14 @@
340
360
 		ret = 0;
341
361
 		break;
342
362
 	default:
343
-		ret = ltc2978_read_word_data(client, page, reg);
363
+		ret = ltc2978_read_word_data(client, page, phase, reg);
344
364
 		break;
345
365
 	}
346
366
 	return ret;
347
367
 }
348
368
 
349
-static int ltc2975_read_word_data(struct i2c_client *client, int page, int reg)
369
+static int ltc2975_read_word_data(struct i2c_client *client, int page,
370
+				  int phase, int reg)
350
371
 {
351
372
 	const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
352
373
 	struct ltc2978_data *data = to_ltc2978_data(info);
..
..
@@ -374,13 +395,14 @@
374
395
 		ret = 0;
375
396
 		break;
376
397
 	default:
377
-		ret = ltc2978_read_word_data(client, page, reg);
398
+		ret = ltc2978_read_word_data(client, page, phase, reg);
378
399
 		break;
379
400
 	}
380
401
 	return ret;
381
402
 }
382
403
 
383
-static int ltc3880_read_word_data(struct i2c_client *client, int page, int reg)
404
+static int ltc3880_read_word_data(struct i2c_client *client, int page,
405
+				  int phase, int reg)
384
406
 {
385
407
 	const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
386
408
 	struct ltc2978_data *data = to_ltc2978_data(info);
..
..
@@ -412,7 +434,8 @@
412
434
 	return ret;
413
435
 }
414
436
 
415
-static int ltc3883_read_word_data(struct i2c_client *client, int page, int reg)
437
+static int ltc3883_read_word_data(struct i2c_client *client, int page,
438
+				  int phase, int reg)
416
439
 {
417
440
 	const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
418
441
 	struct ltc2978_data *data = to_ltc2978_data(info);
..
..
@@ -427,7 +450,7 @@
427
450
 		ret = 0;
428
451
 		break;
429
452
 	default:
430
-		ret = ltc3880_read_word_data(client, page, reg);
453
+		ret = ltc3880_read_word_data(client, page, phase, reg);
431
454
 		break;
432
455
 	}
433
456
 	return ret;
..
..
@@ -499,19 +522,30 @@
499
522
 }
500
523
 
501
524
 static const struct i2c_device_id ltc2978_id[] = {
525
+	{"ltc2972", ltc2972},
502
526
 	{"ltc2974", ltc2974},
503
527
 	{"ltc2975", ltc2975},
504
528
 	{"ltc2977", ltc2977},
505
529
 	{"ltc2978", ltc2978},
530
+	{"ltc2979", ltc2979},
506
531
 	{"ltc2980", ltc2980},
507
532
 	{"ltc3880", ltc3880},
508
533
 	{"ltc3882", ltc3882},
509
534
 	{"ltc3883", ltc3883},
535
+	{"ltc3884", ltc3884},
510
536
 	{"ltc3886", ltc3886},
511
537
 	{"ltc3887", ltc3887},
538
+	{"ltc3889", ltc3889},
539
+	{"ltc7880", ltc7880},
512
540
 	{"ltm2987", ltm2987},
541
+	{"ltm4664", ltm4664},
513
542
 	{"ltm4675", ltm4675},
514
543
 	{"ltm4676", ltm4676},
544
+	{"ltm4677", ltm4677},
545
+	{"ltm4678", ltm4678},
546
+	{"ltm4680", ltm4680},
547
+	{"ltm4686", ltm4686},
548
+	{"ltm4700", ltm4700},
515
549
 	{}
516
550
 };
517
551
 MODULE_DEVICE_TABLE(i2c, ltc2978_id);
..
..
@@ -561,7 +595,9 @@
561
595
 
562
596
 	chip_id &= LTC2978_ID_MASK;
563
597
 
564
-	if (chip_id == LTC2974_ID)
598
+	if (chip_id == LTC2972_ID)
599
+		return ltc2972;
600
+	else if (chip_id == LTC2974_ID)
565
601
 		return ltc2974;
566
602
 	else if (chip_id == LTC2975_ID)
567
603
 		return ltc2975;
..
..
@@ -569,6 +605,8 @@
569
605
 		return ltc2977;
570
606
 	else if (chip_id == LTC2978_ID_REV1 || chip_id == LTC2978_ID_REV2)
571
607
 		return ltc2978;
608
+	else if (chip_id == LTC2979_ID_A || chip_id == LTC2979_ID_B)
609
+		return ltc2979;
572
610
 	else if (chip_id == LTC2980_ID_A || chip_id == LTC2980_ID_B)
573
611
 		return ltc2980;
574
612
 	else if (chip_id == LTC3880_ID)
..
..
@@ -577,28 +615,46 @@
577
615
 		return ltc3882;
578
616
 	else if (chip_id == LTC3883_ID)
579
617
 		return ltc3883;
618
+	else if (chip_id == LTC3884_ID)
619
+		return ltc3884;
580
620
 	else if (chip_id == LTC3886_ID)
581
621
 		return ltc3886;
582
622
 	else if (chip_id == LTC3887_ID)
583
623
 		return ltc3887;
624
+	else if (chip_id == LTC3889_ID)
625
+		return ltc3889;
626
+	else if (chip_id == LTC7880_ID)
627
+		return ltc7880;
584
628
 	else if (chip_id == LTM2987_ID_A || chip_id == LTM2987_ID_B)
585
629
 		return ltm2987;
630
+	else if (chip_id == LTM4664_ID)
631
+		return ltm4664;
586
632
 	else if (chip_id == LTM4675_ID)
587
633
 		return ltm4675;
588
634
 	else if (chip_id == LTM4676_ID_REV1 || chip_id == LTM4676_ID_REV2 ||
589
635
 		 chip_id == LTM4676A_ID)
590
636
 		return ltm4676;
637
+	else if (chip_id == LTM4677_ID_REV1 || chip_id == LTM4677_ID_REV2)
638
+		return ltm4677;
639
+	else if (chip_id == LTM4678_ID_REV1 || chip_id == LTM4678_ID_REV2)
640
+		return ltm4678;
641
+	else if (chip_id == LTM4680_ID)
642
+		return ltm4680;
643
+	else if (chip_id == LTM4686_ID)
644
+		return ltm4686;
645
+	else if (chip_id == LTM4700_ID)
646
+		return ltm4700;
591
647
 
592
648
 	dev_err(&client->dev, "Unsupported chip ID 0x%x\n", chip_id);
593
649
 	return -ENODEV;
594
650
 }
595
651
 
596
-static int ltc2978_probe(struct i2c_client *client,
597
-			 const struct i2c_device_id *id)
652
+static int ltc2978_probe(struct i2c_client *client)
598
653
 {
599
654
 	int i, chip_id;
600
655
 	struct ltc2978_data *data;
601
656
 	struct pmbus_driver_info *info;
657
+	const struct i2c_device_id *id;
602
658
 
603
659
 	if (!i2c_check_functionality(client->adapter,
604
660
 				     I2C_FUNC_SMBUS_READ_WORD_DATA))
..
..
@@ -614,11 +670,13 @@
614
670
 		return chip_id;
615
671
 
616
672
 	data->id = chip_id;
673
+	id = i2c_match_id(ltc2978_id, client);
617
674
 	if (data->id != id->driver_data)
618
675
 		dev_warn(&client->dev,
619
-			 "Device mismatch: Configured %s, detected %s\n",
676
+			 "Device mismatch: Configured %s (%d), detected %d\n",
620
677
 			 id->name,
621
-			 ltc2978_id[data->id].name);
678
+			 (int) id->driver_data,
679
+			 chip_id);
622
680
 
623
681
 	info = &data->info;
624
682
 	info->write_word_data = ltc2978_write_word_data;
..
..
@@ -641,6 +699,19 @@
641
699
 	data->temp2_max = 0x7c00;
642
700
 
643
701
 	switch (data->id) {
702
+	case ltc2972:
703
+		info->read_word_data = ltc2975_read_word_data;
704
+		info->pages = LTC2972_NUM_PAGES;
705
+		info->func[0] = PMBUS_HAVE_IIN | PMBUS_HAVE_PIN
706
+		  | PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT
707
+		  | PMBUS_HAVE_TEMP2;
708
+		for (i = 0; i < info->pages; i++) {
709
+			info->func[i] |= PMBUS_HAVE_VOUT
710
+			  | PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_POUT
711
+			  | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP
712
+			  | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT;
713
+		}
714
+		break;
644
715
 	case ltc2974:
645
716
 		info->read_word_data = ltc2974_read_word_data;
646
717
 		info->pages = LTC2974_NUM_PAGES;
..
..
@@ -666,8 +737,10 @@
666
737
 			  | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT;
667
738
 		}
668
739
 		break;
740
+
669
741
 	case ltc2977:
670
742
 	case ltc2978:
743
+	case ltc2979:
671
744
 	case ltc2980:
672
745
 	case ltm2987:
673
746
 		info->read_word_data = ltc2978_read_word_data;
..
..
@@ -684,6 +757,8 @@
684
757
 	case ltc3887:
685
758
 	case ltm4675:
686
759
 	case ltm4676:
760
+	case ltm4677:
761
+	case ltm4686:
687
762
 		data->features |= FEAT_CLEAR_PEAKS | FEAT_NEEDS_POLLING;
688
763
 		info->read_word_data = ltc3880_read_word_data;
689
764
 		info->pages = LTC3880_NUM_PAGES;
..
..
@@ -724,7 +799,14 @@
724
799
 		  | PMBUS_HAVE_PIN | PMBUS_HAVE_POUT | PMBUS_HAVE_TEMP
725
800
 		  | PMBUS_HAVE_TEMP2 | PMBUS_HAVE_STATUS_TEMP;
726
801
 		break;
802
+	case ltc3884:
727
803
 	case ltc3886:
804
+	case ltc3889:
805
+	case ltc7880:
806
+	case ltm4664:
807
+	case ltm4678:
808
+	case ltm4680:
809
+	case ltm4700:
728
810
 		data->features |= FEAT_CLEAR_PEAKS | FEAT_NEEDS_POLLING;
729
811
 		info->read_word_data = ltc3883_read_word_data;
730
812
 		info->pages = LTC3880_NUM_PAGES;
..
..
@@ -752,24 +834,36 @@
752
834
 	}
753
835
 #endif
754
836
 
755
-	return pmbus_do_probe(client, id, info);
837
+	return pmbus_do_probe(client, info);
756
838
 }
839
+
757
840
 
758
841
 #ifdef CONFIG_OF
759
842
 static const struct of_device_id ltc2978_of_match[] = {
843
+	{ .compatible = "lltc,ltc2972" },
760
844
 	{ .compatible = "lltc,ltc2974" },
761
845
 	{ .compatible = "lltc,ltc2975" },
762
846
 	{ .compatible = "lltc,ltc2977" },
763
847
 	{ .compatible = "lltc,ltc2978" },
848
+	{ .compatible = "lltc,ltc2979" },
764
849
 	{ .compatible = "lltc,ltc2980" },
765
850
 	{ .compatible = "lltc,ltc3880" },
766
851
 	{ .compatible = "lltc,ltc3882" },
767
852
 	{ .compatible = "lltc,ltc3883" },
853
+	{ .compatible = "lltc,ltc3884" },
768
854
 	{ .compatible = "lltc,ltc3886" },
769
855
 	{ .compatible = "lltc,ltc3887" },
856
+	{ .compatible = "lltc,ltc3889" },
857
+	{ .compatible = "lltc,ltc7880" },
770
858
 	{ .compatible = "lltc,ltm2987" },
859
+	{ .compatible = "lltc,ltm4664" },
771
860
 	{ .compatible = "lltc,ltm4675" },
772
861
 	{ .compatible = "lltc,ltm4676" },
862
+	{ .compatible = "lltc,ltm4677" },
863
+	{ .compatible = "lltc,ltm4678" },
864
+	{ .compatible = "lltc,ltm4680" },
865
+	{ .compatible = "lltc,ltm4686" },
866
+	{ .compatible = "lltc,ltm4700" },
773
867
 	{ }
774
868
 };
775
869
 MODULE_DEVICE_TABLE(of, ltc2978_of_match);
..
..
@@ -780,7 +874,7 @@
780
874
 		   .name = "ltc2978",
781
875
 		   .of_match_table = of_match_ptr(ltc2978_of_match),
782
876
 		   },
783
-	.probe = ltc2978_probe,
877
+	.probe_new = ltc2978_probe,
784
878
 	.remove = pmbus_do_remove,
785
879
 	.id_table = ltc2978_id,
786
880
 };
..
..
@@ -788,5 +882,5 @@
788
882
 module_i2c_driver(ltc2978_driver);
789
883
 
790
884
 MODULE_AUTHOR("Guenter Roeck");
791
-MODULE_DESCRIPTION("PMBus driver for LTC2978 and comppatible chips");
885
+MODULE_DESCRIPTION("PMBus driver for LTC2978 and compatible chips");
792
886
 MODULE_LICENSE("GPL");