forked from intel/linux-intel-lts
-
Notifications
You must be signed in to change notification settings - Fork 0
/
asus-ec-sensors.c
1095 lines (957 loc) · 32.1 KB
/
asus-ec-sensors.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
// SPDX-License-Identifier: GPL-2.0+
/*
* HWMON driver for ASUS motherboards that publish some sensor values
* via the embedded controller registers.
*
* Copyright (C) 2021 Eugene Shalygin <[email protected]>
* EC provides:
* - Chipset temperature
* - CPU temperature
* - Motherboard temperature
* - T_Sensor temperature
* - VRM temperature
* - Water In temperature
* - Water Out temperature
* - CPU Optional fan RPM
* - Chipset fan RPM
* - VRM Heat Sink fan RPM
* - Water Flow fan RPM
* - CPU current
* - CPU core voltage
*/
#include <linux/acpi.h>
#include <linux/bitops.h>
#include <linux/dev_printk.h>
#include <linux/dmi.h>
#include <linux/hwmon.h>
#include <linux/init.h>
#include <linux/jiffies.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/sort.h>
#include <linux/units.h>
#include <asm/unaligned.h>
static char *mutex_path_override;
/* Writing to this EC register switches EC bank */
#define ASUS_EC_BANK_REGISTER 0xff
#define SENSOR_LABEL_LEN 16
/*
* Arbitrary set max. allowed bank number. Required for sorting banks and
* currently is overkill with just 2 banks used at max, but for the sake
* of alignment let's set it to a higher value.
*/
#define ASUS_EC_MAX_BANK 3
#define ACPI_LOCK_DELAY_MS 500
/* ACPI mutex for locking access to the EC for the firmware */
#define ASUS_HW_ACCESS_MUTEX_ASMX "\\AMW0.ASMX"
#define ASUS_HW_ACCESS_MUTEX_RMTW_ASMX "\\RMTW.ASMX"
#define ASUS_HW_ACCESS_MUTEX_SB_PCI0_SBRG_SIO1_MUT0 "\\_SB_.PCI0.SBRG.SIO1.MUT0"
#define MAX_IDENTICAL_BOARD_VARIATIONS 3
/* Moniker for the ACPI global lock (':' is not allowed in ASL identifiers) */
#define ACPI_GLOBAL_LOCK_PSEUDO_PATH ":GLOBAL_LOCK"
typedef union {
u32 value;
struct {
u8 index;
u8 bank;
u8 size;
u8 dummy;
} components;
} sensor_address;
#define MAKE_SENSOR_ADDRESS(size, bank, index) { \
.value = (size << 16) + (bank << 8) + index \
}
static u32 hwmon_attributes[hwmon_max] = {
[hwmon_chip] = HWMON_C_REGISTER_TZ,
[hwmon_temp] = HWMON_T_INPUT | HWMON_T_LABEL,
[hwmon_in] = HWMON_I_INPUT | HWMON_I_LABEL,
[hwmon_curr] = HWMON_C_INPUT | HWMON_C_LABEL,
[hwmon_fan] = HWMON_F_INPUT | HWMON_F_LABEL,
};
struct ec_sensor_info {
char label[SENSOR_LABEL_LEN];
enum hwmon_sensor_types type;
sensor_address addr;
};
#define EC_SENSOR(sensor_label, sensor_type, size, bank, index) { \
.label = sensor_label, .type = sensor_type, \
.addr = MAKE_SENSOR_ADDRESS(size, bank, index), \
}
enum ec_sensors {
/* chipset temperature [℃] */
ec_sensor_temp_chipset,
/* CPU temperature [℃] */
ec_sensor_temp_cpu,
/* CPU package temperature [℃] */
ec_sensor_temp_cpu_package,
/* motherboard temperature [℃] */
ec_sensor_temp_mb,
/* "T_Sensor" temperature sensor reading [℃] */
ec_sensor_temp_t_sensor,
/* VRM temperature [℃] */
ec_sensor_temp_vrm,
/* CPU Core voltage [mV] */
ec_sensor_in_cpu_core,
/* CPU_Opt fan [RPM] */
ec_sensor_fan_cpu_opt,
/* VRM heat sink fan [RPM] */
ec_sensor_fan_vrm_hs,
/* Chipset fan [RPM] */
ec_sensor_fan_chipset,
/* Water flow sensor reading [RPM] */
ec_sensor_fan_water_flow,
/* CPU current [A] */
ec_sensor_curr_cpu,
/* "Water_In" temperature sensor reading [℃] */
ec_sensor_temp_water_in,
/* "Water_Out" temperature sensor reading [℃] */
ec_sensor_temp_water_out,
/* "Water_Block_In" temperature sensor reading [℃] */
ec_sensor_temp_water_block_in,
/* "Water_Block_Out" temperature sensor reading [℃] */
ec_sensor_temp_water_block_out,
/* "T_sensor_2" temperature sensor reading [℃] */
ec_sensor_temp_t_sensor_2,
/* "Extra_1" temperature sensor reading [℃] */
ec_sensor_temp_sensor_extra_1,
/* "Extra_2" temperature sensor reading [℃] */
ec_sensor_temp_sensor_extra_2,
/* "Extra_3" temperature sensor reading [℃] */
ec_sensor_temp_sensor_extra_3,
};
#define SENSOR_TEMP_CHIPSET BIT(ec_sensor_temp_chipset)
#define SENSOR_TEMP_CPU BIT(ec_sensor_temp_cpu)
#define SENSOR_TEMP_CPU_PACKAGE BIT(ec_sensor_temp_cpu_package)
#define SENSOR_TEMP_MB BIT(ec_sensor_temp_mb)
#define SENSOR_TEMP_T_SENSOR BIT(ec_sensor_temp_t_sensor)
#define SENSOR_TEMP_VRM BIT(ec_sensor_temp_vrm)
#define SENSOR_IN_CPU_CORE BIT(ec_sensor_in_cpu_core)
#define SENSOR_FAN_CPU_OPT BIT(ec_sensor_fan_cpu_opt)
#define SENSOR_FAN_VRM_HS BIT(ec_sensor_fan_vrm_hs)
#define SENSOR_FAN_CHIPSET BIT(ec_sensor_fan_chipset)
#define SENSOR_FAN_WATER_FLOW BIT(ec_sensor_fan_water_flow)
#define SENSOR_CURR_CPU BIT(ec_sensor_curr_cpu)
#define SENSOR_TEMP_WATER_IN BIT(ec_sensor_temp_water_in)
#define SENSOR_TEMP_WATER_OUT BIT(ec_sensor_temp_water_out)
#define SENSOR_TEMP_WATER_BLOCK_IN BIT(ec_sensor_temp_water_block_in)
#define SENSOR_TEMP_WATER_BLOCK_OUT BIT(ec_sensor_temp_water_block_out)
#define SENSOR_TEMP_T_SENSOR_2 BIT(ec_sensor_temp_t_sensor_2)
#define SENSOR_TEMP_SENSOR_EXTRA_1 BIT(ec_sensor_temp_sensor_extra_1)
#define SENSOR_TEMP_SENSOR_EXTRA_2 BIT(ec_sensor_temp_sensor_extra_2)
#define SENSOR_TEMP_SENSOR_EXTRA_3 BIT(ec_sensor_temp_sensor_extra_3)
enum board_family {
family_unknown,
family_amd_400_series,
family_amd_500_series,
family_amd_600_series,
family_intel_300_series,
family_intel_600_series
};
/* All the known sensors for ASUS EC controllers */
static const struct ec_sensor_info sensors_family_amd_400[] = {
[ec_sensor_temp_chipset] =
EC_SENSOR("Chipset", hwmon_temp, 1, 0x00, 0x3a),
[ec_sensor_temp_cpu] =
EC_SENSOR("CPU", hwmon_temp, 1, 0x00, 0x3b),
[ec_sensor_temp_mb] =
EC_SENSOR("Motherboard", hwmon_temp, 1, 0x00, 0x3c),
[ec_sensor_temp_t_sensor] =
EC_SENSOR("T_Sensor", hwmon_temp, 1, 0x00, 0x3d),
[ec_sensor_temp_vrm] =
EC_SENSOR("VRM", hwmon_temp, 1, 0x00, 0x3e),
[ec_sensor_in_cpu_core] =
EC_SENSOR("CPU Core", hwmon_in, 2, 0x00, 0xa2),
[ec_sensor_fan_cpu_opt] =
EC_SENSOR("CPU_Opt", hwmon_fan, 2, 0x00, 0xbc),
[ec_sensor_fan_vrm_hs] =
EC_SENSOR("VRM HS", hwmon_fan, 2, 0x00, 0xb2),
[ec_sensor_fan_chipset] =
/* no chipset fans in this generation */
EC_SENSOR("Chipset", hwmon_fan, 0, 0x00, 0x00),
[ec_sensor_fan_water_flow] =
EC_SENSOR("Water_Flow", hwmon_fan, 2, 0x00, 0xb4),
[ec_sensor_curr_cpu] =
EC_SENSOR("CPU", hwmon_curr, 1, 0x00, 0xf4),
[ec_sensor_temp_water_in] =
EC_SENSOR("Water_In", hwmon_temp, 1, 0x01, 0x0d),
[ec_sensor_temp_water_out] =
EC_SENSOR("Water_Out", hwmon_temp, 1, 0x01, 0x0b),
};
static const struct ec_sensor_info sensors_family_amd_500[] = {
[ec_sensor_temp_chipset] =
EC_SENSOR("Chipset", hwmon_temp, 1, 0x00, 0x3a),
[ec_sensor_temp_cpu] = EC_SENSOR("CPU", hwmon_temp, 1, 0x00, 0x3b),
[ec_sensor_temp_mb] =
EC_SENSOR("Motherboard", hwmon_temp, 1, 0x00, 0x3c),
[ec_sensor_temp_t_sensor] =
EC_SENSOR("T_Sensor", hwmon_temp, 1, 0x00, 0x3d),
[ec_sensor_temp_vrm] = EC_SENSOR("VRM", hwmon_temp, 1, 0x00, 0x3e),
[ec_sensor_in_cpu_core] =
EC_SENSOR("CPU Core", hwmon_in, 2, 0x00, 0xa2),
[ec_sensor_fan_cpu_opt] =
EC_SENSOR("CPU_Opt", hwmon_fan, 2, 0x00, 0xb0),
[ec_sensor_fan_vrm_hs] = EC_SENSOR("VRM HS", hwmon_fan, 2, 0x00, 0xb2),
[ec_sensor_fan_chipset] =
EC_SENSOR("Chipset", hwmon_fan, 2, 0x00, 0xb4),
[ec_sensor_fan_water_flow] =
EC_SENSOR("Water_Flow", hwmon_fan, 2, 0x00, 0xbc),
[ec_sensor_curr_cpu] = EC_SENSOR("CPU", hwmon_curr, 1, 0x00, 0xf4),
[ec_sensor_temp_water_in] =
EC_SENSOR("Water_In", hwmon_temp, 1, 0x01, 0x00),
[ec_sensor_temp_water_out] =
EC_SENSOR("Water_Out", hwmon_temp, 1, 0x01, 0x01),
[ec_sensor_temp_water_block_in] =
EC_SENSOR("Water_Block_In", hwmon_temp, 1, 0x01, 0x02),
[ec_sensor_temp_water_block_out] =
EC_SENSOR("Water_Block_Out", hwmon_temp, 1, 0x01, 0x03),
[ec_sensor_temp_sensor_extra_1] =
EC_SENSOR("Extra_1", hwmon_temp, 1, 0x01, 0x09),
[ec_sensor_temp_t_sensor_2] =
EC_SENSOR("T_sensor_2", hwmon_temp, 1, 0x01, 0x0a),
[ec_sensor_temp_sensor_extra_2] =
EC_SENSOR("Extra_2", hwmon_temp, 1, 0x01, 0x0b),
[ec_sensor_temp_sensor_extra_3] =
EC_SENSOR("Extra_3", hwmon_temp, 1, 0x01, 0x0c),
};
static const struct ec_sensor_info sensors_family_amd_600[] = {
[ec_sensor_temp_cpu] = EC_SENSOR("CPU", hwmon_temp, 1, 0x00, 0x30),
[ec_sensor_temp_cpu_package] = EC_SENSOR("CPU Package", hwmon_temp, 1, 0x00, 0x31),
[ec_sensor_temp_mb] =
EC_SENSOR("Motherboard", hwmon_temp, 1, 0x00, 0x32),
[ec_sensor_temp_vrm] =
EC_SENSOR("VRM", hwmon_temp, 1, 0x00, 0x33),
[ec_sensor_temp_water_in] =
EC_SENSOR("Water_In", hwmon_temp, 1, 0x01, 0x00),
[ec_sensor_temp_water_out] =
EC_SENSOR("Water_Out", hwmon_temp, 1, 0x01, 0x01),
};
static const struct ec_sensor_info sensors_family_intel_300[] = {
[ec_sensor_temp_chipset] =
EC_SENSOR("Chipset", hwmon_temp, 1, 0x00, 0x3a),
[ec_sensor_temp_cpu] = EC_SENSOR("CPU", hwmon_temp, 1, 0x00, 0x3b),
[ec_sensor_temp_mb] =
EC_SENSOR("Motherboard", hwmon_temp, 1, 0x00, 0x3c),
[ec_sensor_temp_t_sensor] =
EC_SENSOR("T_Sensor", hwmon_temp, 1, 0x00, 0x3d),
[ec_sensor_temp_vrm] = EC_SENSOR("VRM", hwmon_temp, 1, 0x00, 0x3e),
[ec_sensor_fan_cpu_opt] =
EC_SENSOR("CPU_Opt", hwmon_fan, 2, 0x00, 0xb0),
[ec_sensor_fan_vrm_hs] = EC_SENSOR("VRM HS", hwmon_fan, 2, 0x00, 0xb2),
[ec_sensor_fan_water_flow] =
EC_SENSOR("Water_Flow", hwmon_fan, 2, 0x00, 0xbc),
[ec_sensor_temp_water_in] =
EC_SENSOR("Water_In", hwmon_temp, 1, 0x01, 0x00),
[ec_sensor_temp_water_out] =
EC_SENSOR("Water_Out", hwmon_temp, 1, 0x01, 0x01),
};
static const struct ec_sensor_info sensors_family_intel_600[] = {
[ec_sensor_temp_t_sensor] =
EC_SENSOR("T_Sensor", hwmon_temp, 1, 0x00, 0x3d),
[ec_sensor_temp_vrm] = EC_SENSOR("VRM", hwmon_temp, 1, 0x00, 0x3e),
};
/* Shortcuts for common combinations */
#define SENSOR_SET_TEMP_CHIPSET_CPU_MB \
(SENSOR_TEMP_CHIPSET | SENSOR_TEMP_CPU | SENSOR_TEMP_MB)
#define SENSOR_SET_TEMP_WATER (SENSOR_TEMP_WATER_IN | SENSOR_TEMP_WATER_OUT)
#define SENSOR_SET_WATER_BLOCK \
(SENSOR_TEMP_WATER_BLOCK_IN | SENSOR_TEMP_WATER_BLOCK_OUT)
struct ec_board_info {
unsigned long sensors;
/*
* Defines which mutex to use for guarding access to the state and the
* hardware. Can be either a full path to an AML mutex or the
* pseudo-path ACPI_GLOBAL_LOCK_PSEUDO_PATH to use the global ACPI lock,
* or left empty to use a regular mutex object, in which case access to
* the hardware is not guarded.
*/
const char *mutex_path;
enum board_family family;
};
static const struct ec_board_info board_info_prime_x470_pro = {
.sensors = SENSOR_SET_TEMP_CHIPSET_CPU_MB |
SENSOR_TEMP_T_SENSOR | SENSOR_TEMP_VRM |
SENSOR_FAN_CPU_OPT |
SENSOR_CURR_CPU | SENSOR_IN_CPU_CORE,
.mutex_path = ACPI_GLOBAL_LOCK_PSEUDO_PATH,
.family = family_amd_400_series,
};
static const struct ec_board_info board_info_prime_x570_pro = {
.sensors = SENSOR_SET_TEMP_CHIPSET_CPU_MB | SENSOR_TEMP_VRM |
SENSOR_TEMP_T_SENSOR | SENSOR_FAN_CHIPSET,
.mutex_path = ASUS_HW_ACCESS_MUTEX_ASMX,
.family = family_amd_500_series,
};
static const struct ec_board_info board_info_pro_art_x570_creator_wifi = {
.sensors = SENSOR_SET_TEMP_CHIPSET_CPU_MB | SENSOR_TEMP_VRM |
SENSOR_TEMP_T_SENSOR | SENSOR_FAN_CPU_OPT |
SENSOR_CURR_CPU | SENSOR_IN_CPU_CORE,
.mutex_path = ASUS_HW_ACCESS_MUTEX_ASMX,
.family = family_amd_500_series,
};
static const struct ec_board_info board_info_pro_art_b550_creator = {
.sensors = SENSOR_SET_TEMP_CHIPSET_CPU_MB |
SENSOR_TEMP_T_SENSOR |
SENSOR_FAN_CPU_OPT,
.mutex_path = ASUS_HW_ACCESS_MUTEX_ASMX,
.family = family_amd_500_series,
};
static const struct ec_board_info board_info_pro_ws_x570_ace = {
.sensors = SENSOR_SET_TEMP_CHIPSET_CPU_MB | SENSOR_TEMP_VRM |
SENSOR_TEMP_T_SENSOR | SENSOR_FAN_CHIPSET |
SENSOR_CURR_CPU | SENSOR_IN_CPU_CORE,
.mutex_path = ASUS_HW_ACCESS_MUTEX_ASMX,
.family = family_amd_500_series,
};
static const struct ec_board_info board_info_crosshair_x670e_hero = {
.sensors = SENSOR_TEMP_CPU | SENSOR_TEMP_CPU_PACKAGE |
SENSOR_TEMP_MB | SENSOR_TEMP_VRM |
SENSOR_SET_TEMP_WATER,
.mutex_path = ACPI_GLOBAL_LOCK_PSEUDO_PATH,
.family = family_amd_600_series,
};
static const struct ec_board_info board_info_crosshair_viii_dark_hero = {
.sensors = SENSOR_SET_TEMP_CHIPSET_CPU_MB |
SENSOR_TEMP_T_SENSOR |
SENSOR_TEMP_VRM | SENSOR_SET_TEMP_WATER |
SENSOR_FAN_CPU_OPT | SENSOR_FAN_WATER_FLOW |
SENSOR_CURR_CPU | SENSOR_IN_CPU_CORE,
.mutex_path = ASUS_HW_ACCESS_MUTEX_ASMX,
.family = family_amd_500_series,
};
static const struct ec_board_info board_info_crosshair_viii_hero = {
.sensors = SENSOR_SET_TEMP_CHIPSET_CPU_MB |
SENSOR_TEMP_T_SENSOR |
SENSOR_TEMP_VRM | SENSOR_SET_TEMP_WATER |
SENSOR_FAN_CPU_OPT | SENSOR_FAN_CHIPSET |
SENSOR_FAN_WATER_FLOW | SENSOR_CURR_CPU |
SENSOR_IN_CPU_CORE,
.mutex_path = ASUS_HW_ACCESS_MUTEX_ASMX,
.family = family_amd_500_series,
};
static const struct ec_board_info board_info_maximus_xi_hero = {
.sensors = SENSOR_SET_TEMP_CHIPSET_CPU_MB |
SENSOR_TEMP_T_SENSOR |
SENSOR_TEMP_VRM | SENSOR_SET_TEMP_WATER |
SENSOR_FAN_CPU_OPT | SENSOR_FAN_WATER_FLOW,
.mutex_path = ASUS_HW_ACCESS_MUTEX_ASMX,
.family = family_intel_300_series,
};
static const struct ec_board_info board_info_crosshair_viii_impact = {
.sensors = SENSOR_SET_TEMP_CHIPSET_CPU_MB |
SENSOR_TEMP_T_SENSOR | SENSOR_TEMP_VRM |
SENSOR_FAN_CHIPSET | SENSOR_CURR_CPU |
SENSOR_IN_CPU_CORE,
.mutex_path = ASUS_HW_ACCESS_MUTEX_ASMX,
.family = family_amd_500_series,
};
static const struct ec_board_info board_info_strix_b550_e_gaming = {
.sensors = SENSOR_SET_TEMP_CHIPSET_CPU_MB |
SENSOR_TEMP_T_SENSOR | SENSOR_TEMP_VRM |
SENSOR_FAN_CPU_OPT,
.mutex_path = ASUS_HW_ACCESS_MUTEX_ASMX,
.family = family_amd_500_series,
};
static const struct ec_board_info board_info_strix_b550_i_gaming = {
.sensors = SENSOR_SET_TEMP_CHIPSET_CPU_MB |
SENSOR_TEMP_T_SENSOR | SENSOR_TEMP_VRM |
SENSOR_FAN_VRM_HS | SENSOR_CURR_CPU |
SENSOR_IN_CPU_CORE,
.mutex_path = ASUS_HW_ACCESS_MUTEX_ASMX,
.family = family_amd_500_series,
};
static const struct ec_board_info board_info_strix_x570_e_gaming = {
.sensors = SENSOR_SET_TEMP_CHIPSET_CPU_MB |
SENSOR_TEMP_T_SENSOR |
SENSOR_FAN_CHIPSET | SENSOR_CURR_CPU |
SENSOR_IN_CPU_CORE,
.mutex_path = ASUS_HW_ACCESS_MUTEX_ASMX,
.family = family_amd_500_series,
};
static const struct ec_board_info board_info_strix_x570_e_gaming_wifi_ii = {
.sensors = SENSOR_SET_TEMP_CHIPSET_CPU_MB |
SENSOR_TEMP_T_SENSOR | SENSOR_CURR_CPU |
SENSOR_IN_CPU_CORE,
.mutex_path = ASUS_HW_ACCESS_MUTEX_ASMX,
.family = family_amd_500_series,
};
static const struct ec_board_info board_info_strix_x570_f_gaming = {
.sensors = SENSOR_SET_TEMP_CHIPSET_CPU_MB |
SENSOR_TEMP_T_SENSOR | SENSOR_FAN_CHIPSET,
.mutex_path = ASUS_HW_ACCESS_MUTEX_ASMX,
.family = family_amd_500_series,
};
static const struct ec_board_info board_info_strix_x570_i_gaming = {
.sensors = SENSOR_TEMP_CHIPSET | SENSOR_TEMP_VRM |
SENSOR_TEMP_T_SENSOR |
SENSOR_FAN_VRM_HS | SENSOR_FAN_CHIPSET |
SENSOR_CURR_CPU | SENSOR_IN_CPU_CORE,
.mutex_path = ASUS_HW_ACCESS_MUTEX_ASMX,
.family = family_amd_500_series,
};
static const struct ec_board_info board_info_strix_z390_f_gaming = {
.sensors = SENSOR_TEMP_CHIPSET | SENSOR_TEMP_VRM |
SENSOR_TEMP_T_SENSOR |
SENSOR_FAN_CPU_OPT,
.mutex_path = ASUS_HW_ACCESS_MUTEX_ASMX,
.family = family_intel_300_series,
};
static const struct ec_board_info board_info_strix_z690_a_gaming_wifi_d4 = {
.sensors = SENSOR_TEMP_T_SENSOR | SENSOR_TEMP_VRM,
.mutex_path = ASUS_HW_ACCESS_MUTEX_RMTW_ASMX,
.family = family_intel_600_series,
};
static const struct ec_board_info board_info_zenith_ii_extreme = {
.sensors = SENSOR_SET_TEMP_CHIPSET_CPU_MB | SENSOR_TEMP_T_SENSOR |
SENSOR_TEMP_VRM | SENSOR_SET_TEMP_WATER |
SENSOR_FAN_CPU_OPT | SENSOR_FAN_CHIPSET | SENSOR_FAN_VRM_HS |
SENSOR_FAN_WATER_FLOW | SENSOR_CURR_CPU | SENSOR_IN_CPU_CORE |
SENSOR_SET_WATER_BLOCK |
SENSOR_TEMP_T_SENSOR_2 | SENSOR_TEMP_SENSOR_EXTRA_1 |
SENSOR_TEMP_SENSOR_EXTRA_2 | SENSOR_TEMP_SENSOR_EXTRA_3,
.mutex_path = ASUS_HW_ACCESS_MUTEX_SB_PCI0_SBRG_SIO1_MUT0,
.family = family_amd_500_series,
};
#define DMI_EXACT_MATCH_ASUS_BOARD_NAME(name, board_info) \
{ \
.matches = { \
DMI_EXACT_MATCH(DMI_BOARD_VENDOR, \
"ASUSTeK COMPUTER INC."), \
DMI_EXACT_MATCH(DMI_BOARD_NAME, name), \
}, \
.driver_data = (void *)board_info, \
}
static const struct dmi_system_id dmi_table[] = {
DMI_EXACT_MATCH_ASUS_BOARD_NAME("PRIME X470-PRO",
&board_info_prime_x470_pro),
DMI_EXACT_MATCH_ASUS_BOARD_NAME("PRIME X570-PRO",
&board_info_prime_x570_pro),
DMI_EXACT_MATCH_ASUS_BOARD_NAME("ProArt X570-CREATOR WIFI",
&board_info_pro_art_x570_creator_wifi),
DMI_EXACT_MATCH_ASUS_BOARD_NAME("ProArt B550-CREATOR",
&board_info_pro_art_b550_creator),
DMI_EXACT_MATCH_ASUS_BOARD_NAME("Pro WS X570-ACE",
&board_info_pro_ws_x570_ace),
DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG CROSSHAIR VIII DARK HERO",
&board_info_crosshair_viii_dark_hero),
DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG CROSSHAIR VIII FORMULA",
&board_info_crosshair_viii_hero),
DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG CROSSHAIR VIII HERO",
&board_info_crosshair_viii_hero),
DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG CROSSHAIR VIII HERO (WI-FI)",
&board_info_crosshair_viii_hero),
DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG CROSSHAIR X670E HERO",
&board_info_crosshair_x670e_hero),
DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG MAXIMUS XI HERO",
&board_info_maximus_xi_hero),
DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG MAXIMUS XI HERO (WI-FI)",
&board_info_maximus_xi_hero),
DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG CROSSHAIR VIII IMPACT",
&board_info_crosshair_viii_impact),
DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG STRIX B550-E GAMING",
&board_info_strix_b550_e_gaming),
DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG STRIX B550-I GAMING",
&board_info_strix_b550_i_gaming),
DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG STRIX X570-E GAMING",
&board_info_strix_x570_e_gaming),
DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG STRIX X570-E GAMING WIFI II",
&board_info_strix_x570_e_gaming_wifi_ii),
DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG STRIX X570-F GAMING",
&board_info_strix_x570_f_gaming),
DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG STRIX X570-I GAMING",
&board_info_strix_x570_i_gaming),
DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG STRIX Z390-F GAMING",
&board_info_strix_z390_f_gaming),
DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG STRIX Z690-A GAMING WIFI D4",
&board_info_strix_z690_a_gaming_wifi_d4),
DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG ZENITH II EXTREME",
&board_info_zenith_ii_extreme),
DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG ZENITH II EXTREME ALPHA",
&board_info_zenith_ii_extreme),
{},
};
struct ec_sensor {
unsigned int info_index;
s32 cached_value;
};
struct lock_data {
union {
acpi_handle aml;
/* global lock handle */
u32 glk;
} mutex;
bool (*lock)(struct lock_data *data);
bool (*unlock)(struct lock_data *data);
};
/*
* The next function pairs implement options for locking access to the
* state and the EC
*/
static bool lock_via_acpi_mutex(struct lock_data *data)
{
/*
* ASUS DSDT does not specify that access to the EC has to be guarded,
* but firmware does access it via ACPI
*/
return ACPI_SUCCESS(acpi_acquire_mutex(data->mutex.aml,
NULL, ACPI_LOCK_DELAY_MS));
}
static bool unlock_acpi_mutex(struct lock_data *data)
{
return ACPI_SUCCESS(acpi_release_mutex(data->mutex.aml, NULL));
}
static bool lock_via_global_acpi_lock(struct lock_data *data)
{
return ACPI_SUCCESS(acpi_acquire_global_lock(ACPI_LOCK_DELAY_MS,
&data->mutex.glk));
}
static bool unlock_global_acpi_lock(struct lock_data *data)
{
return ACPI_SUCCESS(acpi_release_global_lock(data->mutex.glk));
}
struct ec_sensors_data {
const struct ec_board_info *board_info;
const struct ec_sensor_info *sensors_info;
struct ec_sensor *sensors;
/* EC registers to read from */
u16 *registers;
u8 *read_buffer;
/* sorted list of unique register banks */
u8 banks[ASUS_EC_MAX_BANK + 1];
/* in jiffies */
unsigned long last_updated;
struct lock_data lock_data;
/* number of board EC sensors */
u8 nr_sensors;
/*
* number of EC registers to read
* (sensor might span more than 1 register)
*/
u8 nr_registers;
/* number of unique register banks */
u8 nr_banks;
};
static u8 register_bank(u16 reg)
{
return reg >> 8;
}
static u8 register_index(u16 reg)
{
return reg & 0x00ff;
}
static bool is_sensor_data_signed(const struct ec_sensor_info *si)
{
/*
* guessed from WMI functions in DSDT code for boards
* of the X470 generation
*/
return si->type == hwmon_temp;
}
static const struct ec_sensor_info *
get_sensor_info(const struct ec_sensors_data *state, int index)
{
return state->sensors_info + state->sensors[index].info_index;
}
static int find_ec_sensor_index(const struct ec_sensors_data *ec,
enum hwmon_sensor_types type, int channel)
{
unsigned int i;
for (i = 0; i < ec->nr_sensors; i++) {
if (get_sensor_info(ec, i)->type == type) {
if (channel == 0)
return i;
channel--;
}
}
return -ENOENT;
}
static int bank_compare(const void *a, const void *b)
{
return *((const s8 *)a) - *((const s8 *)b);
}
static void setup_sensor_data(struct ec_sensors_data *ec)
{
struct ec_sensor *s = ec->sensors;
bool bank_found;
int i, j;
u8 bank;
ec->nr_banks = 0;
ec->nr_registers = 0;
for_each_set_bit(i, &ec->board_info->sensors,
BITS_PER_TYPE(ec->board_info->sensors)) {
s->info_index = i;
s->cached_value = 0;
ec->nr_registers +=
ec->sensors_info[s->info_index].addr.components.size;
bank_found = false;
bank = ec->sensors_info[s->info_index].addr.components.bank;
for (j = 0; j < ec->nr_banks; j++) {
if (ec->banks[j] == bank) {
bank_found = true;
break;
}
}
if (!bank_found) {
ec->banks[ec->nr_banks++] = bank;
}
s++;
}
sort(ec->banks, ec->nr_banks, 1, bank_compare, NULL);
}
static void fill_ec_registers(struct ec_sensors_data *ec)
{
const struct ec_sensor_info *si;
unsigned int i, j, register_idx = 0;
for (i = 0; i < ec->nr_sensors; ++i) {
si = get_sensor_info(ec, i);
for (j = 0; j < si->addr.components.size; ++j, ++register_idx) {
ec->registers[register_idx] =
(si->addr.components.bank << 8) +
si->addr.components.index + j;
}
}
}
static int setup_lock_data(struct device *dev)
{
const char *mutex_path;
int status;
struct ec_sensors_data *state = dev_get_drvdata(dev);
mutex_path = mutex_path_override ?
mutex_path_override : state->board_info->mutex_path;
if (!mutex_path || !strlen(mutex_path)) {
dev_err(dev, "Hardware access guard mutex name is empty");
return -EINVAL;
}
if (!strcmp(mutex_path, ACPI_GLOBAL_LOCK_PSEUDO_PATH)) {
state->lock_data.mutex.glk = 0;
state->lock_data.lock = lock_via_global_acpi_lock;
state->lock_data.unlock = unlock_global_acpi_lock;
} else {
status = acpi_get_handle(NULL, (acpi_string)mutex_path,
&state->lock_data.mutex.aml);
if (ACPI_FAILURE(status)) {
dev_err(dev,
"Failed to get hardware access guard AML mutex '%s': error %d",
mutex_path, status);
return -ENOENT;
}
state->lock_data.lock = lock_via_acpi_mutex;
state->lock_data.unlock = unlock_acpi_mutex;
}
return 0;
}
static int asus_ec_bank_switch(u8 bank, u8 *old)
{
int status = 0;
if (old) {
status = ec_read(ASUS_EC_BANK_REGISTER, old);
}
if (status || (old && (*old == bank)))
return status;
return ec_write(ASUS_EC_BANK_REGISTER, bank);
}
static int asus_ec_block_read(const struct device *dev,
struct ec_sensors_data *ec)
{
int ireg, ibank, status;
u8 bank, reg_bank, prev_bank;
bank = 0;
status = asus_ec_bank_switch(bank, &prev_bank);
if (status) {
dev_warn(dev, "EC bank switch failed");
return status;
}
if (prev_bank) {
/* oops... somebody else is working with the EC too */
dev_warn(dev,
"Concurrent access to the ACPI EC detected.\nRace condition possible.");
}
/* read registers minimizing bank switches. */
for (ibank = 0; ibank < ec->nr_banks; ibank++) {
if (bank != ec->banks[ibank]) {
bank = ec->banks[ibank];
if (asus_ec_bank_switch(bank, NULL)) {
dev_warn(dev, "EC bank switch to %d failed",
bank);
break;
}
}
for (ireg = 0; ireg < ec->nr_registers; ireg++) {
reg_bank = register_bank(ec->registers[ireg]);
if (reg_bank < bank) {
continue;
}
ec_read(register_index(ec->registers[ireg]),
ec->read_buffer + ireg);
}
}
status = asus_ec_bank_switch(prev_bank, NULL);
return status;
}
static inline s32 get_sensor_value(const struct ec_sensor_info *si, u8 *data)
{
if (is_sensor_data_signed(si)) {
switch (si->addr.components.size) {
case 1:
return (s8)*data;
case 2:
return (s16)get_unaligned_be16(data);
case 4:
return (s32)get_unaligned_be32(data);
default:
return 0;
}
} else {
switch (si->addr.components.size) {
case 1:
return *data;
case 2:
return get_unaligned_be16(data);
case 4:
return get_unaligned_be32(data);
default:
return 0;
}
}
}
static void update_sensor_values(struct ec_sensors_data *ec, u8 *data)
{
const struct ec_sensor_info *si;
struct ec_sensor *s, *sensor_end;
sensor_end = ec->sensors + ec->nr_sensors;
for (s = ec->sensors; s != sensor_end; s++) {
si = ec->sensors_info + s->info_index;
s->cached_value = get_sensor_value(si, data);
data += si->addr.components.size;
}
}
static int update_ec_sensors(const struct device *dev,
struct ec_sensors_data *ec)
{
int status;
if (!ec->lock_data.lock(&ec->lock_data)) {
dev_warn(dev, "Failed to acquire mutex");
return -EBUSY;
}
status = asus_ec_block_read(dev, ec);
if (!status) {
update_sensor_values(ec, ec->read_buffer);
}
if (!ec->lock_data.unlock(&ec->lock_data))
dev_err(dev, "Failed to release mutex");
return status;
}
static long scale_sensor_value(s32 value, int data_type)
{
switch (data_type) {
case hwmon_curr:
case hwmon_temp:
return value * MILLI;
default:
return value;
}
}
static int get_cached_value_or_update(const struct device *dev,
int sensor_index,
struct ec_sensors_data *state, s32 *value)
{
if (time_after(jiffies, state->last_updated + HZ)) {
if (update_ec_sensors(dev, state)) {
dev_err(dev, "update_ec_sensors() failure\n");
return -EIO;
}
state->last_updated = jiffies;
}
*value = state->sensors[sensor_index].cached_value;
return 0;
}
/*
* Now follow the functions that implement the hwmon interface
*/
static int asus_ec_hwmon_read(struct device *dev, enum hwmon_sensor_types type,
u32 attr, int channel, long *val)
{
int ret;
s32 value = 0;
struct ec_sensors_data *state = dev_get_drvdata(dev);
int sidx = find_ec_sensor_index(state, type, channel);
if (sidx < 0) {
return sidx;
}
ret = get_cached_value_or_update(dev, sidx, state, &value);
if (!ret) {
*val = scale_sensor_value(value,
get_sensor_info(state, sidx)->type);
}
return ret;
}
static int asus_ec_hwmon_read_string(struct device *dev,
enum hwmon_sensor_types type, u32 attr,
int channel, const char **str)
{
struct ec_sensors_data *state = dev_get_drvdata(dev);
int sensor_index = find_ec_sensor_index(state, type, channel);
*str = get_sensor_info(state, sensor_index)->label;
return 0;
}
static umode_t asus_ec_hwmon_is_visible(const void *drvdata,
enum hwmon_sensor_types type, u32 attr,
int channel)
{
const struct ec_sensors_data *state = drvdata;
return find_ec_sensor_index(state, type, channel) >= 0 ? S_IRUGO : 0;
}
static int
asus_ec_hwmon_add_chan_info(struct hwmon_channel_info *asus_ec_hwmon_chan,
struct device *dev, int num,
enum hwmon_sensor_types type, u32 config)
{
int i;
u32 *cfg = devm_kcalloc(dev, num + 1, sizeof(*cfg), GFP_KERNEL);
if (!cfg)
return -ENOMEM;
asus_ec_hwmon_chan->type = type;
asus_ec_hwmon_chan->config = cfg;
for (i = 0; i < num; i++, cfg++)
*cfg = config;
return 0;
}
static const struct hwmon_ops asus_ec_hwmon_ops = {
.is_visible = asus_ec_hwmon_is_visible,
.read = asus_ec_hwmon_read,
.read_string = asus_ec_hwmon_read_string,
};
static struct hwmon_chip_info asus_ec_chip_info = {
.ops = &asus_ec_hwmon_ops,
};
static const struct ec_board_info *get_board_info(void)
{
const struct dmi_system_id *dmi_entry;
dmi_entry = dmi_first_match(dmi_table);
return dmi_entry ? dmi_entry->driver_data : NULL;
}
static int asus_ec_probe(struct platform_device *pdev)
{
const struct hwmon_channel_info **ptr_asus_ec_ci;
int nr_count[hwmon_max] = { 0 }, nr_types = 0;
struct hwmon_channel_info *asus_ec_hwmon_chan;
const struct ec_board_info *pboard_info;
const struct hwmon_chip_info *chip_info;
struct device *dev = &pdev->dev;
struct ec_sensors_data *ec_data;
const struct ec_sensor_info *si;
enum hwmon_sensor_types type;
struct device *hwdev;
unsigned int i;
int status;
pboard_info = get_board_info();
if (!pboard_info)
return -ENODEV;
ec_data = devm_kzalloc(dev, sizeof(struct ec_sensors_data),
GFP_KERNEL);
if (!ec_data)
return -ENOMEM;
dev_set_drvdata(dev, ec_data);
ec_data->board_info = pboard_info;
switch (ec_data->board_info->family) {
case family_amd_400_series:
ec_data->sensors_info = sensors_family_amd_400;
break;
case family_amd_500_series:
ec_data->sensors_info = sensors_family_amd_500;
break;
case family_amd_600_series:
ec_data->sensors_info = sensors_family_amd_600;
break;
case family_intel_300_series:
ec_data->sensors_info = sensors_family_intel_300;
break;
case family_intel_600_series:
ec_data->sensors_info = sensors_family_intel_600;
break;
default:
dev_err(dev, "Unknown board family: %d",
ec_data->board_info->family);
return -EINVAL;
}
ec_data->nr_sensors = hweight_long(ec_data->board_info->sensors);
ec_data->sensors = devm_kcalloc(dev, ec_data->nr_sensors,
sizeof(struct ec_sensor), GFP_KERNEL);
if (!ec_data->sensors)
return -ENOMEM;
status = setup_lock_data(dev);
if (status) {
dev_err(dev, "Failed to setup state/EC locking: %d", status);
return status;