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
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
|
/* Copyright 2014 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "adc.h"
#include "atomic.h"
#include "battery.h"
#include "charge_manager.h"
#include "charge_ramp.h"
#include "charger.h"
#include "console.h"
#include "gpio.h"
#include "hooks.h"
#include "host_command.h"
#include "system.h"
#include "tcpm.h"
#include "timer.h"
#include "usb_pd.h"
#include "usb_pd_tcpm.h"
#include "util.h"
#define CPRINTS(format, args...) cprints(CC_USBCHARGE, format, ## args)
#define POWER(charge_port) ((charge_port.current) * (charge_port.voltage))
/* Timeout for delayed override power swap, allow for 500ms extra */
#define POWER_SWAP_TIMEOUT (PD_T_SRC_RECOVER_MAX + PD_T_SRC_TURN_ON + \
PD_T_SAFE_0V + 500 * MSEC)
/*
* Default charge supplier priority
*
* - Always pick dedicated charge if present since that is the best product
* decision.
* - Pick PD negotiated chargers over everything else since they have the most
* power potential and they may not currently be negotiated at a high power.
* (and they can at least provide 15W)
* - Pick Type-C which supplier current >= 1.5A, which has higher prioirty
* than the BC1.2 and Type-C with current under 1.5A. (USB-C spec 1.3
* Table 4-17: TYPEC 3.0A, 1.5A > BC1.2 > TYPEC under 1.5A)
* - Then pick among the propreitary and BC1.2 chargers which ever has the
* highest available power.
* - Last, pick one from the rest suppliers. Also note that some boards assume
* wireless suppliers as low priority.
*/
__overridable const int supplier_priority[] = {
#if CONFIG_DEDICATED_CHARGE_PORT_COUNT > 0
[CHARGE_SUPPLIER_DEDICATED] = 0,
#endif
[CHARGE_SUPPLIER_PD] = 1,
[CHARGE_SUPPLIER_TYPEC] = 2,
[CHARGE_SUPPLIER_TYPEC_DTS] = 2,
#ifdef CHARGE_MANAGER_BC12
[CHARGE_SUPPLIER_PROPRIETARY] = 3,
[CHARGE_SUPPLIER_BC12_DCP] = 3,
[CHARGE_SUPPLIER_BC12_CDP] = 3,
[CHARGE_SUPPLIER_BC12_SDP] = 3,
[CHARGE_SUPPLIER_TYPEC_UNDER_1_5A] = 4,
[CHARGE_SUPPLIER_OTHER] = 4,
[CHARGE_SUPPLIER_VBUS] = 4,
#endif
#ifdef CONFIG_WIRELESS_CHARGER_P9221_R7
[CHARGE_SUPPLIER_WPC_BPP] = 5,
[CHARGE_SUPPLIER_WPC_EPP] = 5,
[CHARGE_SUPPLIER_WPC_GPP] = 5,
#endif
};
BUILD_ASSERT(ARRAY_SIZE(supplier_priority) == CHARGE_SUPPLIER_COUNT);
/* Keep track of available charge for each charge port. */
static struct charge_port_info available_charge[CHARGE_SUPPLIER_COUNT]
[CHARGE_PORT_COUNT];
/* Keep track of when the supplier on each port is registered. */
static timestamp_t registration_time[CHARGE_PORT_COUNT];
/*
* Charge current ceiling (mA) for ports. This can be set to temporarily limit
* the charge pulled from a port, without influencing the port selection logic.
* The ceiling can be set independently from several requestors, with the
* minimum ceiling taking effect.
*/
static int charge_ceil[CHARGE_PORT_COUNT][CEIL_REQUESTOR_COUNT];
/* Dual-role capability of attached partner port */
static enum dualrole_capabilities dualrole_capability[CHARGE_PORT_COUNT];
#ifdef CONFIG_USB_PD_LOGGING
/* Mark port as dirty when making changes, for later logging */
static int save_log[CHARGE_PORT_COUNT];
#endif
/* Store current state of port enable / charge current. */
static int charge_port = CHARGE_PORT_NONE;
static int charge_current = CHARGE_CURRENT_UNINITIALIZED;
static int charge_current_uncapped = CHARGE_CURRENT_UNINITIALIZED;
static int charge_voltage;
static int charge_supplier = CHARGE_SUPPLIER_NONE;
static int override_port = OVERRIDE_OFF;
static int delayed_override_port = OVERRIDE_OFF;
static timestamp_t delayed_override_deadline;
static uint8_t source_port_rp[CONFIG_USB_PD_PORT_MAX_COUNT];
#ifdef CONFIG_USB_PD_MAX_TOTAL_SOURCE_CURRENT
/* 3A on one port and 1.5A on the rest */
BUILD_ASSERT(CONFIG_USB_PD_PORT_MAX_COUNT * 1500 + 1500 <=
CONFIG_USB_PD_MAX_TOTAL_SOURCE_CURRENT);
#endif
/*
* charge_manager initially operates in safe mode until asked to leave (through
* charge_manager_leave_safe_mode()). While in safe mode, the following
* behavior is altered:
*
* 1) All chargers are considered dedicated (and thus are valid charge source
* candidates) for the purpose of port selection.
* 2) Charge ceilings are ignored. Most significantly, ILIM won't drop on PD
* voltage transition. If current load is high during transition, some
* chargers may brown-out.
* 3) CHARGE_PORT_NONE will not be selected (POR default charge port will
* remain selected rather than CHARGE_PORT_NONE).
*
* After leaving safe mode, charge_manager reverts to its normal behavior and
* immediately selects charge port and current using standard rules.
*/
#ifdef CONFIG_CHARGE_MANAGER_SAFE_MODE
static int left_safe_mode;
#else
static const int left_safe_mode = 1;
#endif
enum charge_manager_change_type {
CHANGE_CHARGE,
CHANGE_DUALROLE,
};
static int is_pd_port(int port)
{
return port >= 0 && port < CONFIG_USB_PD_PORT_MAX_COUNT;
}
static int is_sink(int port)
{
if (!is_pd_port(port))
return board_charge_port_is_sink(port);
return pd_get_role(port) == PD_ROLE_SINK;
}
#ifndef TEST_BUILD
static int is_connected(int port)
{
if (!is_pd_port(port))
return board_charge_port_is_connected(port);
return pd_is_connected(port);
}
#endif /* !TEST_BUILD */
#ifndef CONFIG_CHARGE_MANAGER_DRP_CHARGING
/**
* In certain cases we need to override the default behavior of not charging
* from non-dedicated chargers. If the system is in RO and locked, we have no
* way of determining the actual dualrole capability of the charger because
* PD communication is not allowed, so we must assume that it is dedicated.
* Also, if no battery is present, the charger may be our only source of power,
* so again we must assume that the charger is dedicated.
*
* @return 1 when we need to override the a non-dedicated charger
* to be a dedicated one, 0 otherwise.
*/
static int charge_manager_spoof_dualrole_capability(void)
{
return (system_get_image_copy() == SYSTEM_IMAGE_RO &&
system_is_locked()) || !left_safe_mode;
}
#endif /* !CONFIG_CHARGE_MANAGER_DRP_CHARGING */
/**
* Initialize available charge. Run before board init, so board init can
* initialize data, if needed.
*/
static void charge_manager_init(void)
{
int i, j;
for (i = 0; i < CHARGE_PORT_COUNT; ++i) {
for (j = 0; j < CHARGE_SUPPLIER_COUNT; ++j) {
available_charge[j][i].current =
CHARGE_CURRENT_UNINITIALIZED;
available_charge[j][i].voltage =
CHARGE_VOLTAGE_UNINITIALIZED;
}
for (j = 0; j < CEIL_REQUESTOR_COUNT; ++j)
charge_ceil[i][j] = CHARGE_CEIL_NONE;
if (!is_pd_port(i))
dualrole_capability[i] = CAP_DEDICATED;
if (is_pd_port(i))
source_port_rp[i] = CONFIG_USB_PD_PULLUP;
}
}
DECLARE_HOOK(HOOK_INIT, charge_manager_init, HOOK_PRIO_CHARGE_MANAGER_INIT);
/**
* Check if the charge manager is seeded.
*
* @return 1 if all ports/suppliers have reported
* with some initial charge, 0 otherwise.
*/
static int charge_manager_is_seeded(void)
{
/* Once we're seeded, we don't need to check again. */
static int is_seeded;
int i, j;
if (is_seeded)
return 1;
for (i = 0; i < CHARGE_SUPPLIER_COUNT; ++i)
for (j = 0; j < CHARGE_PORT_COUNT; ++j)
if (available_charge[i][j].current ==
CHARGE_CURRENT_UNINITIALIZED ||
available_charge[i][j].voltage ==
CHARGE_VOLTAGE_UNINITIALIZED)
return 0;
is_seeded = 1;
return 1;
}
#ifndef TEST_BUILD
/**
* Get the maximum charge current for a port.
*
* @param port Charge port.
* @return Charge current (mA).
*/
static int charge_manager_get_source_current(int port)
{
if (!is_pd_port(port))
return 0;
switch (source_port_rp[port]) {
case TYPEC_RP_3A0:
return 3000;
case TYPEC_RP_1A5:
return 1500;
case TYPEC_RP_USB:
default:
return 500;
}
}
/*
* Find a supplier considering available current, voltage, power, and priority.
*/
static enum charge_supplier find_supplier(int port, enum charge_supplier sup,
int min_cur)
{
int i;
for (i = 0; i < CHARGE_SUPPLIER_COUNT; ++i) {
if (available_charge[i][port].current <= min_cur ||
available_charge[i][port].voltage <= 0)
/* Doesn't meet volt or current requirement. Skip it. */
continue;
if (sup == CHARGE_SUPPLIER_NONE)
/* Haven't found any yet. Take it unconditionally. */
sup = i;
else if (supplier_priority[sup] < supplier_priority[i])
/* There is already a higher priority supplier. */
continue;
else if (supplier_priority[i] < supplier_priority[sup])
/* This has a higher priority. Take it. */
sup = i;
else if (POWER(available_charge[i][port]) >
POWER(available_charge[sup][port]))
/* Priority is tie. Take it if power is higher. */
sup = i;
}
return sup;
}
/**
* Fills passed power_info structure with current info about the passed port.
*
* @param port Charge port.
* @param r USB PD power info to be updated.
*/
static void charge_manager_fill_power_info(int port,
struct ec_response_usb_pd_power_info *r)
{
int sup = CHARGE_SUPPLIER_NONE;
/* Determine supplier information to show. */
if (port == charge_port) {
sup = charge_supplier;
} else {
/* Consider available current */
sup = find_supplier(port, sup, 0);
if (sup == CHARGE_SUPPLIER_NONE)
/* Ignore available current */
sup = find_supplier(port, sup, -1);
}
/* Fill in power role */
if (charge_port == port)
r->role = USB_PD_PORT_POWER_SINK;
else if (is_connected(port) && !is_sink(port))
r->role = USB_PD_PORT_POWER_SOURCE;
else if (sup != CHARGE_SUPPLIER_NONE)
r->role = USB_PD_PORT_POWER_SINK_NOT_CHARGING;
else
r->role = USB_PD_PORT_POWER_DISCONNECTED;
/* Is port partner dual-role capable */
r->dualrole = (dualrole_capability[port] == CAP_DUALROLE);
if (sup == CHARGE_SUPPLIER_NONE ||
r->role == USB_PD_PORT_POWER_SOURCE) {
if (is_pd_port(port)) {
r->type = USB_CHG_TYPE_NONE;
r->meas.voltage_max = 0;
r->meas.voltage_now =
r->role == USB_PD_PORT_POWER_SOURCE ? 5000 : 0;
r->meas.current_max =
charge_manager_get_source_current(port);
r->max_power = 0;
} else {
r->type = USB_CHG_TYPE_NONE;
board_fill_source_power_info(port, r);
}
} else {
int use_ramp_current;
switch (sup) {
case CHARGE_SUPPLIER_PD:
r->type = USB_CHG_TYPE_PD;
break;
case CHARGE_SUPPLIER_TYPEC:
case CHARGE_SUPPLIER_TYPEC_DTS:
r->type = USB_CHG_TYPE_C;
break;
#ifdef CHARGE_MANAGER_BC12
case CHARGE_SUPPLIER_PROPRIETARY:
r->type = USB_CHG_TYPE_PROPRIETARY;
break;
case CHARGE_SUPPLIER_BC12_DCP:
r->type = USB_CHG_TYPE_BC12_DCP;
break;
case CHARGE_SUPPLIER_BC12_CDP:
r->type = USB_CHG_TYPE_BC12_CDP;
break;
case CHARGE_SUPPLIER_BC12_SDP:
r->type = USB_CHG_TYPE_BC12_SDP;
break;
case CHARGE_SUPPLIER_VBUS:
r->type = USB_CHG_TYPE_VBUS;
break;
#endif
#ifdef CONFIG_WIRELESS_CHARGER_P9221_R7
/*
* Todo:need kernel add wpc device node in power_supply
* before that use USB_CHG_TYPE_PROPRIETARY to present WPC.
*/
case CHARGE_SUPPLIER_WPC_BPP:
case CHARGE_SUPPLIER_WPC_EPP:
case CHARGE_SUPPLIER_WPC_GPP:
r->type = USB_CHG_TYPE_PROPRIETARY;
break;
#endif
#if CONFIG_DEDICATED_CHARGE_PORT_COUNT > 0
case CHARGE_SUPPLIER_DEDICATED:
r->type = USB_CHG_TYPE_DEDICATED;
break;
#endif
default:
#ifdef CONFIG_WIRELESS_CHARGER_P9221_R7
r->type = USB_CHG_TYPE_VBUS;
#else
r->type = USB_CHG_TYPE_OTHER;
#endif
}
r->meas.voltage_max = available_charge[sup][port].voltage;
/*
* Report unknown charger CHARGE_DETECT_DELAY after supplier
* change since PD negotiation may take time.
*/
if (get_time().val < registration_time[port].val +
CHARGE_DETECT_DELAY)
r->type = USB_CHG_TYPE_UNKNOWN;
#if defined(HAS_TASK_CHG_RAMP) || defined(CONFIG_CHARGE_RAMP_HW)
/* Read ramped current if active charging port */
use_ramp_current =
(charge_port == port) && chg_ramp_allowed(sup);
#else
use_ramp_current = 0;
#endif
if (use_ramp_current) {
/* Current limit is output of ramp module */
r->meas.current_lim = chg_ramp_get_current_limit();
/*
* If ramp is allowed, then the max current depends
* on if ramp is stable. If ramp is stable, then
* max current is same as input current limit. If
* ramp is not stable, then we report the maximum
* current we could ramp up to for this supplier.
* If ramp is not allowed, max current is just the
* available charge current.
*/
r->meas.current_max = chg_ramp_is_stable() ?
r->meas.current_lim : chg_ramp_max(sup,
available_charge[sup][port].current);
r->max_power =
r->meas.current_max * r->meas.voltage_max;
} else {
r->meas.current_max = r->meas.current_lim =
available_charge[sup][port].current;
r->max_power = POWER(available_charge[sup][port]);
}
/*
* If we are sourcing power, or sinking but not charging, then
* VBUS must be 5V. If we are charging, then read VBUS ADC.
*/
if (r->role == USB_PD_PORT_POWER_SINK_NOT_CHARGING)
r->meas.voltage_now = 5000;
else {
#if defined(CONFIG_USB_PD_VBUS_MEASURE_CHARGER)
r->meas.voltage_now = charger_get_vbus_voltage(port);
#elif defined(CONFIG_USB_PD_VBUS_MEASURE_ADC_EACH_PORT)
r->meas.voltage_now =
adc_read_channel(board_get_vbus_adc(port));
#elif defined(CONFIG_USB_PD_VBUS_MEASURE_NOT_PRESENT)
/* No VBUS ADC channel - voltage is unknown */
r->meas.voltage_now = 0;
#else
/* There is a single ADC that measures joint Vbus */
r->meas.voltage_now = adc_read_channel(ADC_VBUS);
#endif
}
}
}
#endif /* TEST_BUILD */
#ifdef CONFIG_USB_PD_LOGGING
/**
* Saves a power state log entry with the current info about the passed port.
*/
void charge_manager_save_log(int port)
{
uint16_t flags = 0;
struct ec_response_usb_pd_power_info pinfo;
if (!is_pd_port(port))
return;
save_log[port] = 0;
charge_manager_fill_power_info(port, &pinfo);
/* Flags are stored in the data field */
if (port == override_port)
flags |= CHARGE_FLAGS_OVERRIDE;
if (port == delayed_override_port)
flags |= CHARGE_FLAGS_DELAYED_OVERRIDE;
flags |= pinfo.role | (pinfo.type << CHARGE_FLAGS_TYPE_SHIFT) |
(pinfo.dualrole ? CHARGE_FLAGS_DUAL_ROLE : 0);
pd_log_event(PD_EVENT_MCU_CHARGE,
PD_LOG_PORT_SIZE(port, sizeof(pinfo.meas)),
flags, &pinfo.meas);
}
#endif /* CONFIG_USB_PD_LOGGING */
/**
* Attempt to switch to power source on port if applicable.
*
* @param port USB-C port to be swapped.
*/
static void charge_manager_switch_to_source(int port)
{
if (!is_pd_port(port))
return;
/* If connected to dual-role device, then ask for a swap */
if (dualrole_capability[port] == CAP_DUALROLE && is_sink(port))
pd_request_power_swap(port);
}
/**
* Return the computed charge ceiling for a port, which represents the
* minimum ceiling among all valid requestors.
*
* @param port Charge port.
* @return Charge ceiling (mA) or CHARGE_CEIL_NONE.
*/
static int charge_manager_get_ceil(int port)
{
int ceil = CHARGE_CEIL_NONE;
int val, i;
for (i = 0; i < CEIL_REQUESTOR_COUNT; ++i) {
val = charge_ceil[port][i];
if (val != CHARGE_CEIL_NONE &&
(ceil == CHARGE_CEIL_NONE || val < ceil))
ceil = val;
}
return ceil;
}
/**
* Select the 'best' charge port, as defined by the supplier heirarchy and the
* ability of the port to provide power.
*
* @param new_port Pointer to the best charge port by definition.
* @param new_supplier Pointer to the best charge supplier by definition.
*/
static void charge_manager_get_best_charge_port(int *new_port,
int *new_supplier)
{
int supplier = CHARGE_SUPPLIER_NONE;
int port = CHARGE_PORT_NONE;
int best_port_power = -1, candidate_port_power;
int i, j;
/* Skip port selection on OVERRIDE_DONT_CHARGE. */
if (override_port != OVERRIDE_DONT_CHARGE) {
/*
* Charge supplier selection logic:
* 1. Prefer higher priority supply.
* 2. Prefer higher power over lower in case priority is tied.
* 3. Prefer current charge port over new port in case (1)
* and (2) are tied.
* available_charge can be changed at any time by other tasks,
* so make no assumptions about its consistency.
*/
for (i = 0; i < CHARGE_SUPPLIER_COUNT; ++i)
for (j = 0; j < CHARGE_PORT_COUNT; ++j) {
/*
* Skip this supplier if there is no
* available charge.
*/
if (available_charge[i][j].current == 0 ||
available_charge[i][j].voltage == 0)
continue;
/*
* Don't select this port if we have a
* charge on another override port.
*/
if (override_port != OVERRIDE_OFF &&
override_port == port &&
override_port != j)
continue;
#ifndef CONFIG_CHARGE_MANAGER_DRP_CHARGING
/*
* Don't charge from a dual-role port unless
* it is our override port.
*/
if (dualrole_capability[j] != CAP_DEDICATED &&
override_port != j &&
!charge_manager_spoof_dualrole_capability())
continue;
#endif
candidate_port_power =
POWER(available_charge[i][j]);
/* Select if no supplier chosen yet. */
if (supplier == CHARGE_SUPPLIER_NONE ||
/* ..or if supplier priority is higher. */
supplier_priority[i] <
supplier_priority[supplier] ||
/* ..or if this is our override port. */
(j == override_port &&
port != override_port) ||
/* ..or if priority is tied and.. */
(supplier_priority[i] ==
supplier_priority[supplier] &&
/* candidate port can supply more power or.. */
(candidate_port_power > best_port_power ||
/*
* candidate port is the active port and can
* supply the same amount of power.
*/
(candidate_port_power == best_port_power &&
charge_port == j)))) {
supplier = i;
port = j;
best_port_power = candidate_port_power;
}
}
}
*new_port = port;
*new_supplier = supplier;
}
/**
* Charge manager refresh -- responsible for selecting the active charge port
* and charge power. Called as a deferred task.
*/
static void charge_manager_refresh(void)
{
/* Always initialize charge port on first pass */
static int active_charge_port_initialized;
int new_supplier, new_port;
int new_charge_current, new_charge_current_uncapped;
int new_charge_voltage, i;
int updated_new_port = CHARGE_PORT_NONE;
int updated_old_port = CHARGE_PORT_NONE;
int ceil;
int power_changed = 0;
/* Hunt for an acceptable charge port */
while (1) {
charge_manager_get_best_charge_port(&new_port, &new_supplier);
if (!left_safe_mode && new_port == CHARGE_PORT_NONE)
return;
/*
* If the port or supplier changed, make an attempt to switch to
* the port. We will re-set the active port on a supplier change
* to give the board-level function another chance to reject
* the port, for example, if the port has become a charge
* source.
*/
if ((active_charge_port_initialized &&
new_port == charge_port &&
new_supplier == charge_supplier) ||
board_set_active_charge_port(new_port) == EC_SUCCESS)
break;
/* 'Dont charge' request must be accepted. */
ASSERT(new_port != CHARGE_PORT_NONE);
/*
* Zero the available charge on the rejected port so that
* it is no longer chosen.
*/
for (i = 0; i < CHARGE_SUPPLIER_COUNT; ++i) {
available_charge[i][new_port].current = 0;
available_charge[i][new_port].voltage = 0;
}
}
active_charge_port_initialized = 1;
/*
* Clear override if it wasn't selected as the 'best' port -- it means
* that no charge is available on the port, or the port was rejected.
*/
if (override_port >= 0 && override_port != new_port)
override_port = OVERRIDE_OFF;
if (new_supplier == CHARGE_SUPPLIER_NONE) {
new_charge_current = 0;
new_charge_current_uncapped = 0;
new_charge_voltage = 0;
} else {
new_charge_current_uncapped =
available_charge[new_supplier][new_port].current;
#ifdef CONFIG_CHARGE_RAMP_HW
/*
* Allow to set the maximum current value, so the hardware can
* know the range of acceptable current values for its ramping.
*/
if (chg_ramp_allowed(new_supplier))
new_charge_current_uncapped =
chg_ramp_max(new_supplier,
new_charge_current_uncapped);
#endif /* CONFIG_CHARGE_RAMP_HW */
/* Enforce port charge ceiling. */
ceil = charge_manager_get_ceil(new_port);
if (left_safe_mode && ceil != CHARGE_CEIL_NONE)
new_charge_current = MIN(ceil,
new_charge_current_uncapped);
else
new_charge_current = new_charge_current_uncapped;
new_charge_voltage =
available_charge[new_supplier][new_port].voltage;
}
/* Change the charge limit + charge port/supplier if modified. */
if (new_port != charge_port || new_charge_current != charge_current ||
new_supplier != charge_supplier) {
#ifdef HAS_TASK_CHG_RAMP
chg_ramp_charge_supplier_change(
new_port, new_supplier, new_charge_current,
registration_time[new_port],
new_charge_voltage);
#else
#ifdef CONFIG_CHARGE_RAMP_HW
/* Enable or disable charge ramp */
charger_set_hw_ramp(chg_ramp_allowed(new_supplier));
#endif
board_set_charge_limit(new_port, new_supplier,
new_charge_current,
new_charge_current_uncapped,
new_charge_voltage);
#endif /* HAS_TASK_CHG_RAMP */
power_changed = 1;
CPRINTS("CL: p%d s%d i%d v%d", new_port, new_supplier,
new_charge_current, new_charge_voltage);
}
/*
* Signal new power request only if the port changed, the voltage
* on the same port changed, or the actual uncapped current
* on the same port changed (don't consider ceil).
*/
if (new_port != CHARGE_PORT_NONE &&
(new_port != charge_port ||
new_charge_current_uncapped != charge_current_uncapped ||
new_charge_voltage != charge_voltage))
updated_new_port = new_port;
/* If charge port changed, cleanup old port */
if (charge_port != new_port && charge_port != CHARGE_PORT_NONE) {
/* Check if need power swap */
charge_manager_switch_to_source(charge_port);
/* Signal new power request on old port */
updated_old_port = charge_port;
}
/* Update globals to reflect current state. */
charge_current = new_charge_current;
charge_current_uncapped = new_charge_current_uncapped;
charge_voltage = new_charge_voltage;
charge_supplier = new_supplier;
charge_port = new_port;
#ifdef CONFIG_USB_PD_LOGGING
/*
* Write a log under the following conditions:
* 1. A port becomes active or
* 2. A port becomes inactive or
* 3. The active charge port power limit changes or
* 4. Any supplier change on an inactive port
*/
if (updated_new_port != CHARGE_PORT_NONE)
save_log[updated_new_port] = 1;
/* Don't log non-meaningful changes on charge port */
else if (charge_port != CHARGE_PORT_NONE)
save_log[charge_port] = 0;
if (updated_old_port != CHARGE_PORT_NONE)
save_log[updated_old_port] = 1;
for (i = 0; i < CONFIG_USB_PD_PORT_MAX_COUNT; ++i)
if (save_log[i])
charge_manager_save_log(i);
#endif
/* New power requests must be set only after updating the globals. */
if (is_pd_port(updated_new_port))
pd_set_new_power_request(updated_new_port);
if (is_pd_port(updated_old_port))
pd_set_new_power_request(updated_old_port);
if (power_changed)
/* notify host of power info change */
pd_send_host_event(PD_EVENT_POWER_CHANGE);
}
DECLARE_DEFERRED(charge_manager_refresh);
/**
* Called when charge override times out waiting for power swap.
*/
static void charge_override_timeout(void)
{
delayed_override_port = OVERRIDE_OFF;
pd_send_host_event(PD_EVENT_POWER_CHANGE);
}
DECLARE_DEFERRED(charge_override_timeout);
/**
* Called CHARGE_DETECT_DELAY after the most recent charge change on a port.
*/
static void charger_detect_debounced(void)
{
/* Inform host that charger detection is debounced. */
pd_send_host_event(PD_EVENT_POWER_CHANGE);
}
DECLARE_DEFERRED(charger_detect_debounced);
/**
* Update charge parameters for a given port / supplier.
*
* @param change Type of change.
* @param supplier Charge supplier to be updated.
* @param port Charge port to be updated.
* @param charge Charge port current / voltage.
*/
static void charge_manager_make_change(enum charge_manager_change_type change,
int supplier,
int port,
const struct charge_port_info *charge)
{
int i;
int clear_override = 0;
/* Determine if this is a change which can affect charge status */
switch (change) {
case CHANGE_CHARGE:
/* Ignore changes where charge is identical */
if (available_charge[supplier][port].current ==
charge->current &&
available_charge[supplier][port].voltage ==
charge->voltage)
return;
if (charge->current > 0 &&
available_charge[supplier][port].current == 0)
clear_override = 1;
#ifdef CONFIG_USB_PD_LOGGING
save_log[port] = 1;
#endif
break;
case CHANGE_DUALROLE:
/*
* Ignore all except for transition to non-dualrole,
* which may occur some time after we see a charge
*/
#ifndef CONFIG_CHARGE_MANAGER_DRP_CHARGING
if (dualrole_capability[port] != CAP_DEDICATED)
#endif
return;
/* Clear override only if a charge is present on the port */
for (i = 0; i < CHARGE_SUPPLIER_COUNT; ++i)
if (available_charge[i][port].current > 0) {
clear_override = 1;
break;
}
/*
* If there is no charge present on the port, the dualrole
* change is meaningless to charge_manager.
*/
if (!clear_override)
return;
break;
}
/* Remove override when a charger is plugged */
if (clear_override && override_port != port
#ifndef CONFIG_CHARGE_MANAGER_DRP_CHARGING
/* only remove override when it's a dedicated charger */
&& dualrole_capability[port] == CAP_DEDICATED
#endif
) {
override_port = OVERRIDE_OFF;
if (delayed_override_port != OVERRIDE_OFF) {
delayed_override_port = OVERRIDE_OFF;
hook_call_deferred(&charge_override_timeout_data, -1);
}
}
if (change == CHANGE_CHARGE) {
available_charge[supplier][port].current = charge->current;
available_charge[supplier][port].voltage = charge->voltage;
registration_time[port] = get_time();
/*
* After CHARGE_DETECT_DELAY, inform the host that charger
* detection has been debounced. Since only one deferred
* routine exists for all ports, the deferred call for a given
* port may potentially be cancelled. This is mostly harmless
* since cancellation implies that PD_EVENT_POWER_CHANGE was
* just sent due to the power change on another port.
*/
if (charge->current > 0)
hook_call_deferred(&charger_detect_debounced_data,
CHARGE_DETECT_DELAY);
/*
* If we have a charge on our delayed override port within
* the deadline, make it our override port.
*/
if (port == delayed_override_port && charge->current > 0 &&
is_sink(delayed_override_port) &&
get_time().val < delayed_override_deadline.val) {
delayed_override_port = OVERRIDE_OFF;
hook_call_deferred(&charge_override_timeout_data, -1);
charge_manager_set_override(port);
}
}
/*
* Don't call charge_manager_refresh unless all ports +
* suppliers have reported in. We don't want to make changes
* to our charge port until we are certain we know what is
* attached.
*/
if (charge_manager_is_seeded())
hook_call_deferred(&charge_manager_refresh_data, 0);
}
void pd_set_input_current_limit(int port, uint32_t max_ma,
uint32_t supply_voltage)
{
struct charge_port_info charge;
charge.current = max_ma;
charge.voltage = supply_voltage;
charge_manager_update_charge(CHARGE_SUPPLIER_PD, port, &charge);
}
void typec_set_input_current_limit(int port, typec_current_t max_ma,
uint32_t supply_voltage)
{
struct charge_port_info charge;
int i;
int supplier;
int dts = !!(max_ma & TYPEC_CURRENT_DTS_MASK);
static const enum charge_supplier typec_suppliers[] = {
CHARGE_SUPPLIER_TYPEC,
CHARGE_SUPPLIER_TYPEC_DTS,
#ifdef CHARGE_MANAGER_BC12
CHARGE_SUPPLIER_TYPEC_UNDER_1_5A,
#endif /* CHARGE_MANAGER_BC12 */
};
charge.current = max_ma & TYPEC_CURRENT_ILIM_MASK;
charge.voltage = supply_voltage;
#if !defined(HAS_TASK_CHG_RAMP) && !defined(CONFIG_CHARGE_RAMP_HW)
/*
* DTS sources such as suzy-q may not be able to actually deliver
* their advertised current, so limit it to reduce chance of OC,
* if we can't ramp.
*/
if (dts)
charge.current = MIN(charge.current, 500);
#endif
supplier = dts ? CHARGE_SUPPLIER_TYPEC_DTS : CHARGE_SUPPLIER_TYPEC;
#ifdef CHARGE_MANAGER_BC12
/*
* According to USB-C spec 1.3 Table 4-17 "Precedence of power source
* usage", the priority should be: USB-C 3.0A, 1.5A > BC1.2 > USB-C
* under 1.5A. Choosed the corresponding supplier type, according to
* charge current, to update.
*/
if (charge.current < 1500)
supplier = CHARGE_SUPPLIER_TYPEC_UNDER_1_5A;
#endif /* CHARGE_MANAGER_BC12 */
charge_manager_update_charge(supplier, port, &charge);
/*
* TYPEC / TYPEC-DTS / TYPEC-UNDER_1_5A should be mutually exclusive.
* Zero'ing all the other suppliers.
*/
for (i = 0; i < ARRAY_SIZE(typec_suppliers); ++i)
if (supplier != typec_suppliers[i])
charge_manager_update_charge(typec_suppliers[i], port,
NULL);
}
void charge_manager_update_charge(int supplier,
int port,
const struct charge_port_info *charge)
{
struct charge_port_info zero = {0};
if (!charge)
charge = &zero;
charge_manager_make_change(CHANGE_CHARGE, supplier, port, charge);
}
void charge_manager_update_dualrole(int port, enum dualrole_capabilities cap)
{
if (!is_pd_port(port))
return;
/* Ignore when capability is unchanged */
if (cap != dualrole_capability[port]) {
dualrole_capability[port] = cap;
charge_manager_make_change(CHANGE_DUALROLE, 0, port, NULL);
}
}
#ifdef CONFIG_CHARGE_MANAGER_SAFE_MODE
void charge_manager_leave_safe_mode(void)
{
if (left_safe_mode)
return;
CPRINTS("%s()", __func__);
cflush();
left_safe_mode = 1;
if (charge_manager_is_seeded())
hook_call_deferred(&charge_manager_refresh_data, 0);
}
#endif
void charge_manager_set_ceil(int port, enum ceil_requestor requestor, int ceil)
{
if (charge_ceil[port][requestor] != ceil) {
charge_ceil[port][requestor] = ceil;
if (port == charge_port && charge_manager_is_seeded())
hook_call_deferred(&charge_manager_refresh_data, 0);
}
}
void charge_manager_force_ceil(int port, int ceil)
{
/*
* Force our input current to ceil if we're exceeding it, without
* waiting for our deferred task to run.
*/
if (left_safe_mode && port == charge_port && ceil < charge_current)
board_set_charge_limit(port, CHARGE_SUPPLIER_PD, ceil,
charge_current_uncapped, charge_voltage);
/*
* Now inform charge_manager so it stays in sync with the state of
* the world.
*/
charge_manager_set_ceil(port, CEIL_REQUESTOR_PD, ceil);
}
int charge_manager_set_override(int port)
{
int retval = EC_SUCCESS;
CPRINTS("Charge Override: %d", port);
/*
* If attempting to change the override port, then return
* error. Since we may be in the middle of a power swap on
* the original override port, it's too complicated to
* guarantee that the original override port is switched back
* to source.
*/
if (delayed_override_port != OVERRIDE_OFF)
return EC_ERROR_BUSY;
/* Set the override port if it's a sink. */
if (port < 0 || is_sink(port)) {
if (override_port != port) {
override_port = port;
if (charge_manager_is_seeded())
hook_call_deferred(
&charge_manager_refresh_data, 0);
}
}
/*
* If the attached device is capable of being a sink, request a
* power swap and set the delayed override for swap completion.
*/
else if (!is_sink(port) && dualrole_capability[port] == CAP_DUALROLE) {
delayed_override_deadline.val = get_time().val +
POWER_SWAP_TIMEOUT;
delayed_override_port = port;
hook_call_deferred(&charge_override_timeout_data,
POWER_SWAP_TIMEOUT);
pd_request_power_swap(port);
/* Can't charge from requested port -- return error. */
} else
retval = EC_ERROR_INVAL;
return retval;
}
int charge_manager_get_override(void)
{
return override_port;
}
int charge_manager_get_active_charge_port(void)
{
return charge_port;
}
int charge_manager_get_charger_current(void)
{
return charge_current;
}
int charge_manager_get_charger_voltage(void)
{
return charge_voltage;
}
int charge_manager_get_power_limit_uw(void)
{
int current_ma = charge_current;
int voltage_mv = charge_voltage;
if (current_ma == CHARGE_CURRENT_UNINITIALIZED ||
voltage_mv == CHARGE_VOLTAGE_UNINITIALIZED)
return 0;
else
return current_ma * voltage_mv;
}
#ifdef CONFIG_USB_PD_MAX_SINGLE_SOURCE_CURRENT
/* Bitmap of ports used as power source */
static volatile uint32_t source_port_bitmap;
BUILD_ASSERT(sizeof(source_port_bitmap)*8 >= CONFIG_USB_PD_PORT_MAX_COUNT);
static inline int has_other_active_source(int port)
{
return source_port_bitmap & ~BIT(port);
}
static inline int is_active_source(int port)
{
return source_port_bitmap & BIT(port);
}
static int can_supply_max_current(int port)
{
#ifdef CONFIG_USB_PD_MAX_TOTAL_SOURCE_CURRENT
/*
* This guarantees active 3A source continues to supply 3A.
*
* Since redistribution occurs sequentially, younger ports get
* priority. Priority surfaces only when 3A source is released.
* That is, when 3A source is released, the youngest active
* port gets 3A.
*/
int p;
if (!is_active_source(port))
/* Non-active ports don't get 3A */
return 0;
for (p = 0; p < CONFIG_USB_PD_PORT_MAX_COUNT; p++) {
if (p == port)
continue;
if (source_port_rp[p] ==
CONFIG_USB_PD_MAX_SINGLE_SOURCE_CURRENT)
return 0;
}
return 1;
#else
return is_active_source(port) && !has_other_active_source(port);
#endif /* CONFIG_USB_PD_MAX_TOTAL_SOURCE_CURRENT */
}
void charge_manager_source_port(int port, int enable)
{
uint32_t prev_bitmap = source_port_bitmap;
int p, rp;
if (enable)
atomic_or(&source_port_bitmap, 1 << port);
else
atomic_clear(&source_port_bitmap, 1 << port);
/* No change, exit early. */
if (prev_bitmap == source_port_bitmap)
return;
/* Set port limit according to policy */
for (p = 0; p < CONFIG_USB_PD_PORT_MAX_COUNT; p++) {
rp = can_supply_max_current(p) ?
CONFIG_USB_PD_MAX_SINGLE_SOURCE_CURRENT :
CONFIG_USB_PD_PULLUP;
source_port_rp[p] = rp;
#ifdef CONFIG_USB_PD_LOGGING
if (is_connected(p) && !is_sink(p))
charge_manager_save_log(p);
#endif
typec_set_source_current_limit(p, rp);
tcpm_select_rp_value(p, rp);
pd_update_contract(p);
}
}
int charge_manager_get_source_pdo(const uint32_t **src_pdo, const int port)
{
if (can_supply_max_current(port)) {
*src_pdo = pd_src_pdo_max;
return pd_src_pdo_max_cnt;
}
*src_pdo = pd_src_pdo;
return pd_src_pdo_cnt;
}
#endif /* CONFIG_USB_PD_MAX_SINGLE_SOURCE_CURRENT */
#ifndef TEST_BUILD
static enum ec_status hc_pd_power_info(struct host_cmd_handler_args *args)
{
const struct ec_params_usb_pd_power_info *p = args->params;
struct ec_response_usb_pd_power_info *r = args->response;
int port = p->port;
/* If host is asking for the charging port, set port appropriately */
if (port == PD_POWER_CHARGING_PORT)
port = charge_port;
if (port >= CHARGE_PORT_COUNT)
return EC_RES_INVALID_PARAM;
charge_manager_fill_power_info(port, r);
args->response_size = sizeof(*r);
return EC_RES_SUCCESS;
}
DECLARE_HOST_COMMAND(EC_CMD_USB_PD_POWER_INFO,
hc_pd_power_info,
EC_VER_MASK(0));
#endif /* TEST_BUILD */
static enum ec_status hc_charge_port_count(struct host_cmd_handler_args *args)
{
struct ec_response_charge_port_count *resp = args->response;
args->response_size = sizeof(*resp);
resp->port_count = CHARGE_PORT_COUNT;
return EC_RES_SUCCESS;
}
DECLARE_HOST_COMMAND(EC_CMD_CHARGE_PORT_COUNT,
hc_charge_port_count,
EC_VER_MASK(0));
static enum ec_status
hc_charge_port_override(struct host_cmd_handler_args *args)
{
const struct ec_params_charge_port_override *p = args->params;
const int16_t override_port = p->override_port;
if (override_port < OVERRIDE_DONT_CHARGE ||
override_port >= CHARGE_PORT_COUNT)
return EC_RES_INVALID_PARAM;
return charge_manager_set_override(override_port) == EC_SUCCESS ?
EC_RES_SUCCESS : EC_RES_ERROR;
}
DECLARE_HOST_COMMAND(EC_CMD_PD_CHARGE_PORT_OVERRIDE,
hc_charge_port_override,
EC_VER_MASK(0));
#if CONFIG_DEDICATED_CHARGE_PORT_COUNT > 0
static enum ec_status hc_override_dedicated_charger_limit(
struct host_cmd_handler_args *args)
{
const struct ec_params_dedicated_charger_limit *p = args->params;
struct charge_port_info ci = {
.current = p->current_lim,
.voltage = p->voltage_lim,
};
/*
* Allow a change only if the dedicated charge port is used. Host needs
* to apply a change every time a dedicated charger is plugged.
*/
if (charge_port != DEDICATED_CHARGE_PORT)
return EC_RES_UNAVAILABLE;
charge_manager_update_charge(CHARGE_SUPPLIER_DEDICATED,
DEDICATED_CHARGE_PORT, &ci);
return EC_RES_SUCCESS;
}
DECLARE_HOST_COMMAND(EC_CMD_OVERRIDE_DEDICATED_CHARGER_LIMIT,
hc_override_dedicated_charger_limit,
EC_VER_MASK(0));
#endif
static int command_charge_port_override(int argc, char **argv)
{
int port = OVERRIDE_OFF;
int ret = EC_SUCCESS;
char *e;
if (argc >= 2) {
port = strtoi(argv[1], &e, 0);
if (*e || port < OVERRIDE_DONT_CHARGE ||
port >= CHARGE_PORT_COUNT)
return EC_ERROR_PARAM1;
ret = charge_manager_set_override(port);
}
ccprintf("Override: %d\n", (argc >= 2 && ret == EC_SUCCESS) ?
port : override_port);
return ret;
}
DECLARE_CONSOLE_COMMAND(chgoverride, command_charge_port_override,
"[port | -1 | -2]",
"Force charging from a given port (-1 = off, -2 = disable charging)");
#ifdef CONFIG_CHARGE_MANAGER_EXTERNAL_POWER_LIMIT
static void charge_manager_set_external_power_limit(int current_lim,
int voltage_lim)
{
int port;
if (current_lim == EC_POWER_LIMIT_NONE)
current_lim = CHARGE_CEIL_NONE;
if (voltage_lim == EC_POWER_LIMIT_NONE)
voltage_lim = PD_MAX_VOLTAGE_MV;
for (port = 0; port < CONFIG_USB_PD_PORT_MAX_COUNT; ++port) {
charge_manager_set_ceil(port, CEIL_REQUESTOR_HOST, current_lim);
pd_set_external_voltage_limit(port, voltage_lim);
}
}
/*
* On transition out of S0, disable all external power limits, in case AP
* failed to clear them.
*/
static void charge_manager_external_power_limit_off(void)
{
charge_manager_set_external_power_limit(EC_POWER_LIMIT_NONE,
EC_POWER_LIMIT_NONE);
}
DECLARE_HOOK(HOOK_CHIPSET_SUSPEND, charge_manager_external_power_limit_off,
HOOK_PRIO_DEFAULT);
static enum ec_status
hc_external_power_limit(struct host_cmd_handler_args *args)
{
const struct ec_params_external_power_limit_v1 *p = args->params;
charge_manager_set_external_power_limit(p->current_lim,
p->voltage_lim);
return EC_RES_SUCCESS;
}
DECLARE_HOST_COMMAND(EC_CMD_EXTERNAL_POWER_LIMIT,
hc_external_power_limit,
EC_VER_MASK(1));
static int command_external_power_limit(int argc, char **argv)
{
int max_current;
int max_voltage;
char *e;
if (argc >= 2) {
max_current = strtoi(argv[1], &e, 10);
if (*e)
return EC_ERROR_PARAM1;
} else
max_current = EC_POWER_LIMIT_NONE;
if (argc >= 3) {
max_voltage = strtoi(argv[2], &e, 10);
if (*e)
return EC_ERROR_PARAM1;
} else
max_voltage = EC_POWER_LIMIT_NONE;
charge_manager_set_external_power_limit(max_current, max_voltage);
ccprintf("max req: %dmA %dmV\n", max_current, max_voltage);
return EC_SUCCESS;
}
DECLARE_CONSOLE_COMMAND(chglim, command_external_power_limit,
"[max_current (mA)] [max_voltage (mV)]",
"Set max charger current / voltage");
#endif /* CONFIG_CHARGE_MANAGER_EXTERNAL_POWER_LIMIT */
#ifdef CONFIG_CMD_CHARGE_SUPPLIER_INFO
static int charge_supplier_info(int argc, char **argv)
{
ccprintf("port=%d, type=%d, cur=%dmA, vtg=%dmV, lsm=%d\n",
charge_manager_get_active_charge_port(),
charge_supplier,
charge_current,
charge_voltage,
left_safe_mode);
return 0;
}
DECLARE_CONSOLE_COMMAND(chgsup, charge_supplier_info,
NULL, "print chg supplier info");
#endif
__overridable
int board_charge_port_is_sink(int port)
{
return 1;
}
__overridable
int board_charge_port_is_connected(int port)
{
return 1;
}
__overridable
void board_fill_source_power_info(int port,
struct ec_response_usb_pd_power_info *r)
{
r->meas.voltage_now = 0;
r->meas.voltage_max = 0;
r->meas.current_max = 0;
r->meas.current_lim = 0;
r->max_power = 0;
}
|