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
|
/* Copyright (c) 2013 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.
*/
/* Common functionality across all chipsets */
#include "battery.h"
#include "charge_state.h"
#include "chipset.h"
#include "common.h"
#include "console.h"
#include "display_7seg.h"
#include "extpower.h"
#include "gpio.h"
#include "hooks.h"
#include "host_command.h"
#include "lpc.h"
#include "power.h"
#include "system.h"
#include "task.h"
#include "timer.h"
#include "util.h"
#include "espi.h"
/* Console output macros */
#define CPUTS(outstr) cputs(CC_CHIPSET, outstr)
#define CPRINTS(format, args...) cprints(CC_CHIPSET, format, ## args)
#define CPRINTF(format, args...) cprintf(CC_CHIPSET, format, ## args)
/*
* Default timeout in us; if we've been waiting this long for an input
* transition, just jump to the next state.
*/
#define DEFAULT_TIMEOUT SECOND
/* Timeout for dropping back from S5 to G3 */
#define S5_INACTIVITY_TIMEOUT (10 * SECOND)
static const char * const state_names[] = {
"G3",
"S5",
"S3",
"S0",
#ifdef CONFIG_POWER_S0IX
"S0ix",
#endif
"G3->S5",
"S5->S3",
"S3->S0",
"S0->S3",
"S3->S5",
"S5->G3",
#ifdef CONFIG_POWER_S0IX
"S0ix->S0",
"S0->S0ix",
#endif
};
static uint32_t in_signals; /* Current input signal states (IN_PGOOD_*) */
static uint32_t in_want; /* Input signal state we're waiting for */
static uint32_t in_debug; /* Signal values which print debug output */
static enum power_state state = POWER_G3; /* Current state */
static int want_g3_exit; /* Should we exit the G3 state? */
static uint64_t last_shutdown_time; /* When did we enter G3? */
#ifdef CONFIG_HIBERNATE
/* Delay before hibernating, in seconds */
static uint32_t hibernate_delay = CONFIG_HIBERNATE_DELAY_SEC;
#endif
#ifdef CONFIG_POWER_SHUTDOWN_PAUSE_IN_S5
/* Pause in S5 on shutdown? */
static int pause_in_s5;
#endif
static int power_signal_get_level(enum gpio_signal signal)
{
#ifdef CONFIG_HOSTCMD_ESPI_VW_SLP_SIGNALS
/* Check signal is from GPIOs or VWs */
if (espi_signal_is_vw(signal))
return espi_vw_get_wire(signal);
#endif
return gpio_get_level(signal);
}
int power_signal_disable_interrupt(enum gpio_signal signal)
{
#ifdef CONFIG_HOSTCMD_ESPI_VW_SLP_SIGNALS
/* Check signal is from GPIOs or VWs */
if (espi_signal_is_vw(signal))
return espi_vw_disable_wire_int(signal);
#endif
return gpio_disable_interrupt(signal);
}
int power_signal_enable_interrupt(enum gpio_signal signal)
{
#ifdef CONFIG_HOSTCMD_ESPI_VW_SLP_SIGNALS
/* Check signal is from GPIOs or VWs */
if (espi_signal_is_vw(signal))
return espi_vw_enable_wire_int(signal);
#endif
return gpio_enable_interrupt(signal);
}
int power_signal_is_asserted(const struct power_signal_info *s)
{
return power_signal_get_level(s->gpio) ==
!!(s->flags & POWER_SIGNAL_ACTIVE_STATE);
}
#ifdef CONFIG_BRINGUP
static const char *power_signal_get_name(enum gpio_signal signal)
{
#ifdef CONFIG_HOSTCMD_ESPI_VW_SLP_SIGNALS
/* Check signal is from GPIOs or VWs */
if (espi_signal_is_vw(signal))
return espi_vw_get_wire_name(signal);
#endif
return gpio_get_name(signal);
}
#endif
/**
* Update input signals mask
*/
static void power_update_signals(void)
{
uint32_t inew = 0;
const struct power_signal_info *s = power_signal_list;
int i;
for (i = 0; i < POWER_SIGNAL_COUNT; i++, s++) {
if (power_signal_is_asserted(s))
inew |= 1 << i;
}
if ((in_signals & in_debug) != (inew & in_debug))
CPRINTS("power in 0x%04x", inew);
in_signals = inew;
}
uint32_t power_get_signals(void)
{
return in_signals;
}
int power_has_signals(uint32_t want)
{
if ((in_signals & want) == want)
return 1;
CPRINTS("power lost input; wanted 0x%04x, got 0x%04x",
want, in_signals & want);
return 0;
}
int power_wait_signals(uint32_t want)
{
int ret = power_wait_signals_timeout(want, DEFAULT_TIMEOUT);
if (ret == EC_ERROR_TIMEOUT)
CPRINTS("power timeout on input; wanted 0x%04x, got 0x%04x",
want, in_signals & want);
return ret;
}
int power_wait_signals_timeout(uint32_t want, int timeout)
{
in_want = want;
if (!want)
return EC_SUCCESS;
while ((in_signals & in_want) != in_want) {
if (task_wait_event(timeout) == TASK_EVENT_TIMER) {
power_update_signals();
return EC_ERROR_TIMEOUT;
}
/*
* TODO(crosbug.com/p/23772): should really shrink the
* remaining timeout if we woke up but didn't have all the
* signals we wanted. Also need to handle aborts if we're no
* longer in the same state we were when we started waiting.
*/
}
return EC_SUCCESS;
}
void power_set_state(enum power_state new_state)
{
/* Record the time we go into G3 */
if (new_state == POWER_G3)
last_shutdown_time = get_time().val;
/* Print out the RTC value to help correlate EC and kernel logs. */
print_system_rtc(CC_CHIPSET);
state = new_state;
/*
* Reset want_g3_exit flag here to prevent the situation that if the
* error handler in POWER_S5S3 decides to force shutdown the system and
* the flag is set, the system will go to G3 and then immediately exit
* G3 again.
*/
if (state == POWER_S5S3)
want_g3_exit = 0;
}
enum power_state power_get_state(void)
{
return state;
}
#ifdef CONFIG_HOSTCMD_X86
/* If host doesn't program s0ix lazy wake mask, use default s0ix mask */
#define DEFAULT_WAKE_MASK_S0IX (EC_HOST_EVENT_MASK(EC_HOST_EVENT_LID_OPEN) | \
EC_HOST_EVENT_MASK(EC_HOST_EVENT_MODE_CHANGE))
/*
* Set the wake mask according to the current power state:
* 1. On transition to S0, wake mask is reset.
* 2. In non-S0 states, active mask set by host gets a higher preference.
* 3. If host has not set any active mask, then check if a lazy mask exists
* for the current power state.
* 4. If state is S0ix and no lazy or active wake mask is set, then use default
* S0ix mask to be compatible with older BIOS versions.
*/
void power_update_wake_mask(void)
{
host_event_t wake_mask;
enum power_state state;
state = power_get_state();
if (state == POWER_S0)
wake_mask = 0;
else if (lpc_is_active_wm_set_by_host())
return;
else if (get_lazy_wake_mask(state, &wake_mask))
return;
#ifdef CONFIG_POWER_S0IX
if ((state == POWER_S0ix) && (wake_mask == 0))
wake_mask = DEFAULT_WAKE_MASK_S0IX;
#endif
lpc_set_host_event_mask(LPC_HOST_EVENT_WAKE, wake_mask);
}
/*
* Set wake mask after power state has stabilized, 5ms after power state
* change. The reason for making this a deferred call is to avoid race
* conditions occurring from S0ix periodic wakes on the SoC.
*/
static void power_update_wake_mask_deferred(void);
DECLARE_DEFERRED(power_update_wake_mask_deferred);
static void power_update_wake_mask_deferred(void)
{
hook_call_deferred(&power_update_wake_mask_deferred_data, -1);
power_update_wake_mask();
}
static void power_set_active_wake_mask(void)
{
/*
* Allow state machine to stabilize and update wake mask after 5msec. It
* was observed that on platforms where host wakes up periodically from
* S0ix for hardware book-keeping activities, there is a small window
* where host is not really up and running software, but still SLP_S0#
* is de-asserted and hence setting wake mask right away can cause user
* wake events to be missed.
*
* Time for deferred callback was chosen to be 5msec based on the fact
* that it takes ~2msec for the periodic wake cycle to complete on the
* host for KBL.
*/
hook_call_deferred(&power_update_wake_mask_deferred_data,
5 * MSEC);
}
#else
static void power_set_active_wake_mask(void) { }
#endif
__attribute__((weak))
enum critical_shutdown board_system_is_idle(uint64_t last_shutdown_time,
uint64_t *target, uint64_t now)
{
return now > *target ?
CRITICAL_SHUTDOWN_HIBERNATE : CRITICAL_SHUTDOWN_IGNORE;
}
/**
* Common handler for steady states
*
* @param state Current power state
* @return Updated power state
*/
static enum power_state power_common_state(enum power_state state)
{
switch (state) {
case POWER_G3:
if (want_g3_exit) {
want_g3_exit = 0;
return POWER_G3S5;
}
in_want = 0;
#ifdef CONFIG_HIBERNATE
{
uint64_t target, now, wait;
if (extpower_is_present()) {
task_wait_event(-1);
break;
}
now = get_time().val;
target = last_shutdown_time + hibernate_delay * SECOND;
switch (board_system_is_idle(last_shutdown_time,
&target, now)) {
case CRITICAL_SHUTDOWN_HIBERNATE:
CPRINTS("Hibernate due to G3 idle");
system_hibernate(0, 0);
break;
#ifdef CONFIG_BATTERY_CUT_OFF
case CRITICAL_SHUTDOWN_CUTOFF:
CPRINTS("Cutoff due to G3 idle");
board_cut_off_battery();
break;
#endif
case CRITICAL_SHUTDOWN_IGNORE:
default:
break;
}
wait = MIN(target - now, TASK_MAX_WAIT_US);
task_wait_event(wait);
}
#else /* !CONFIG_HIBERNATE */
task_wait_event(-1);
#endif
break;
case POWER_S5:
/*
* If the power button is pressed before S5 inactivity timer
* expires, the timer will be cancelled and the task of the
* power state machine will be back here again. Since we are
* here, which means the system has been waiting for CPU
* starting up, we don't need want_g3_exit flag to be set
* anymore. Therefore, we can reset the flag here to prevent
* the situation that the flag is still set after S5 inactivity
* timer expires, which can cause the system to exit G3 again.
*/
want_g3_exit = 0;
/* Wait for inactivity timeout */
power_wait_signals(0);
if (task_wait_event(S5_INACTIVITY_TIMEOUT) ==
TASK_EVENT_TIMER) {
/* Prepare to drop to G3; wake not requested yet */
return POWER_S5G3;
}
break;
case POWER_S3:
/* Wait for a message */
power_wait_signals(0);
task_wait_event(-1);
break;
case POWER_S0:
/* Wait for a message */
power_wait_signals(0);
task_wait_event(-1);
break;
#ifdef CONFIG_POWER_S0IX
case POWER_S0ix:
/* Wait for a message */
power_wait_signals(0);
task_wait_event(-1);
break;
#endif
default:
/* No common functionality for transition states */
break;
}
return state;
}
/*****************************************************************************/
/* Chipset interface */
int chipset_in_state(int state_mask)
{
int need_mask = 0;
/*
* TODO(crosbug.com/p/23773): what to do about state transitions? If
* the caller wants HARD_OFF|SOFT_OFF and we're in G3S5, we could still
* return non-zero.
*/
switch (state) {
case POWER_G3:
need_mask = CHIPSET_STATE_HARD_OFF;
break;
case POWER_G3S5:
case POWER_S5G3:
/*
* In between hard and soft off states. Match only if caller
* will accept both.
*/
need_mask = CHIPSET_STATE_HARD_OFF | CHIPSET_STATE_SOFT_OFF;
break;
case POWER_S5:
need_mask = CHIPSET_STATE_SOFT_OFF;
break;
case POWER_S5S3:
case POWER_S3S5:
need_mask = CHIPSET_STATE_SOFT_OFF | CHIPSET_STATE_SUSPEND;
break;
case POWER_S3:
need_mask = CHIPSET_STATE_SUSPEND;
break;
case POWER_S3S0:
case POWER_S0S3:
need_mask = CHIPSET_STATE_SUSPEND | CHIPSET_STATE_ON;
break;
case POWER_S0:
need_mask = CHIPSET_STATE_ON;
break;
#ifdef CONFIG_POWER_S0IX
case POWER_S0ixS0:
case POWER_S0S0ix:
need_mask = CHIPSET_STATE_ON | CHIPSET_STATE_STANDBY;
break;
case POWER_S0ix:
need_mask = CHIPSET_STATE_STANDBY;
break;
#endif
}
/* Return non-zero if all needed bits are present */
return (state_mask & need_mask) == need_mask;
}
int chipset_in_or_transitioning_to_state(int state_mask)
{
switch (state) {
case POWER_G3:
case POWER_S5G3:
return state_mask & CHIPSET_STATE_HARD_OFF;
case POWER_S5:
case POWER_G3S5:
case POWER_S3S5:
return state_mask & CHIPSET_STATE_SOFT_OFF;
case POWER_S3:
case POWER_S5S3:
case POWER_S0S3:
return state_mask & CHIPSET_STATE_SUSPEND;
#ifdef CONFIG_POWER_S0IX
case POWER_S0ix:
case POWER_S0S0ix:
return state_mask & CHIPSET_STATE_STANDBY;
#endif
case POWER_S0:
case POWER_S3S0:
#ifdef CONFIG_POWER_S0IX
case POWER_S0ixS0:
#endif
return state_mask & CHIPSET_STATE_ON;
}
/* Unknown power state; return false. */
return 0;
}
void chipset_exit_hard_off(void)
{
/*
* If not in the soft-off state, hard-off state, or headed there,
* nothing to do.
*/
if (state != POWER_G3 && state != POWER_S5G3 && state != POWER_S5)
return;
/*
* Set a flag to leave G3, then wake the task. If the power state is
* POWER_S5G3, or is POWER_S5 but the S5 inactivity timer has
* expired, set this flag can let system go to G3 and then exit G3
* immediately for powering on.
*/
want_g3_exit = 1;
/*
* If the power state is in POWER_S5 and S5 inactivity timer is
* running, to wake the chipset task can cancel S5 inactivity timer and
* then restart the timer. This will give cpu a chance to start up if
* S5 inactivity timer is about to expire while power button is
* pressed. For other states here, to wake the chipset task to trigger
* the event for leaving G3 is necessary.
*/
task_wake(TASK_ID_CHIPSET);
}
/*****************************************************************************/
/* Task function */
void chipset_task(void *u)
{
enum power_state new_state;
static enum power_state last_state;
uint32_t this_in_signals;
static uint32_t last_in_signals;
while (1) {
/*
* In order to prevent repeated console spam, only print the
* current power state if something has actually changed. It's
* possible that one of the power signals goes away briefly and
* comes back by the time we update our in_signals.
*/
this_in_signals = in_signals;
if (this_in_signals != last_in_signals || state != last_state) {
CPRINTS("power state %d = %s, in 0x%04x",
state, state_names[state], this_in_signals);
if (IS_ENABLED(CONFIG_SEVEN_SEG_DISPLAY))
display_7seg_write(SEVEN_SEG_EC_DISPLAY, state);
last_in_signals = this_in_signals;
last_state = state;
}
/* Always let the specific chipset handle the state first */
new_state = power_handle_state(state);
/*
* If the state hasn't changed, run common steady-state
* handler.
*/
if (new_state == state)
new_state = power_common_state(state);
/* Handle state changes */
if (new_state != state) {
power_set_state(new_state);
power_set_active_wake_mask();
}
}
}
/*****************************************************************************/
/* Hooks */
static void power_common_init(void)
{
const struct power_signal_info *s = power_signal_list;
int i;
/* Update input state */
power_update_signals();
/* Call chipset-specific init to set initial state */
power_set_state(power_chipset_init());
/* Enable interrupts for input signals */
for (i = 0; i < POWER_SIGNAL_COUNT; i++, s++)
if (s->flags & POWER_SIGNAL_DISABLE_AT_BOOT)
power_signal_disable_interrupt(s->gpio);
else
power_signal_enable_interrupt(s->gpio);
/*
* Update input state again since there is a small window
* before GPIO is enabled.
*/
power_update_signals();
}
DECLARE_HOOK(HOOK_INIT, power_common_init, HOOK_PRIO_INIT_CHIPSET);
static void power_lid_change(void)
{
/* Wake up the task to update power state */
task_wake(TASK_ID_CHIPSET);
}
DECLARE_HOOK(HOOK_LID_CHANGE, power_lid_change, HOOK_PRIO_DEFAULT);
#ifdef CONFIG_EXTPOWER
static void power_ac_change(void)
{
if (extpower_is_present()) {
CPRINTS("AC on");
} else {
CPRINTS("AC off");
if (state == POWER_G3) {
last_shutdown_time = get_time().val;
task_wake(TASK_ID_CHIPSET);
}
}
}
DECLARE_HOOK(HOOK_AC_CHANGE, power_ac_change, HOOK_PRIO_DEFAULT);
#endif
/*****************************************************************************/
/* Interrupts */
#ifdef CONFIG_BRINGUP
#define MAX_SIGLOG_ENTRIES 24
static unsigned int siglog_entries;
static unsigned int siglog_truncated;
static struct {
timestamp_t time;
enum gpio_signal signal;
int level;
} siglog[MAX_SIGLOG_ENTRIES];
static void siglog_deferred(void)
{
unsigned int i;
timestamp_t tdiff = {.val = 0};
/* Disable interrupts for input signals while we print stuff.*/
for (i = 0; i < POWER_SIGNAL_COUNT; i++)
power_signal_disable_interrupt(power_signal_list[i].gpio);
CPRINTF("%d signal changes:\n", siglog_entries);
for (i = 0; i < siglog_entries; i++) {
if (i)
tdiff.val = siglog[i].time.val - siglog[i-1].time.val;
CPRINTF(" %.6ld +%.6ld %s => %d\n",
siglog[i].time.val, tdiff.val,
power_signal_get_name(siglog[i].signal),
siglog[i].level);
}
if (siglog_truncated)
CPRINTF(" SIGNAL LOG TRUNCATED...\n");
siglog_entries = siglog_truncated = 0;
/* Okay, turn 'em on again. */
for (i = 0; i < POWER_SIGNAL_COUNT; i++)
power_signal_enable_interrupt(power_signal_list[i].gpio);
}
DECLARE_DEFERRED(siglog_deferred);
static void siglog_add(enum gpio_signal signal)
{
if (siglog_entries >= MAX_SIGLOG_ENTRIES) {
siglog_truncated = 1;
return;
}
siglog[siglog_entries].time = get_time();
siglog[siglog_entries].signal = signal;
siglog[siglog_entries].level = power_signal_get_level(signal);
siglog_entries++;
hook_call_deferred(&siglog_deferred_data, SECOND);
}
#define SIGLOG(S) siglog_add(S)
#else
#define SIGLOG(S)
#endif /* CONFIG_BRINGUP */
#ifdef CONFIG_POWER_SIGNAL_INTERRUPT_STORM_DETECT_THRESHOLD
/*
* Print an interrupt storm warning when we receive more than
* CONFIG_POWER_SIGNAL_INTERRUPT_STORM_DETECT_THRESHOLD interrupts of a
* single source within 1 second.
*/
static int power_signal_interrupt_count[POWER_SIGNAL_COUNT];
static void reset_power_signal_interrupt_count(void)
{
int i;
for (i = 0; i < POWER_SIGNAL_COUNT; ++i)
power_signal_interrupt_count[i] = 0;
}
DECLARE_HOOK(HOOK_SECOND,
reset_power_signal_interrupt_count,
HOOK_PRIO_DEFAULT);
#endif
void power_signal_interrupt(enum gpio_signal signal)
{
#ifdef CONFIG_POWER_SIGNAL_INTERRUPT_STORM_DETECT_THRESHOLD
int i;
/* Tally our interrupts and print a warning if necessary. */
for (i = 0; i < POWER_SIGNAL_COUNT; ++i) {
if (power_signal_list[i].gpio == signal) {
if (power_signal_interrupt_count[i]++ ==
CONFIG_POWER_SIGNAL_INTERRUPT_STORM_DETECT_THRESHOLD)
CPRINTS("Interrupt storm! Signal %d\n", i);
break;
}
}
#endif
SIGLOG(signal);
/* Shadow signals and compare with our desired signal state. */
power_update_signals();
/* Wake up the task */
task_wake(TASK_ID_CHIPSET);
}
#ifdef CONFIG_POWER_SHUTDOWN_PAUSE_IN_S5
inline int power_get_pause_in_s5(void)
{
return pause_in_s5;
}
inline void power_set_pause_in_s5(int pause)
{
pause_in_s5 = pause;
}
#endif
/*****************************************************************************/
/* Console commands */
static int command_powerinfo(int argc, char **argv)
{
/*
* Print power state in same format as state machine. This is
* used by FAFT tests, so must match exactly.
*/
ccprints("power state %d = %s, in 0x%04x",
state, state_names[state], in_signals);
return EC_SUCCESS;
}
DECLARE_CONSOLE_COMMAND(powerinfo, command_powerinfo,
NULL,
"Show current power state");
#ifdef CONFIG_CMD_POWERINDEBUG
static int command_powerindebug(int argc, char **argv)
{
const struct power_signal_info *s = power_signal_list;
int i;
char *e;
/* If one arg, set the mask */
if (argc == 2) {
int m = strtoi(argv[1], &e, 0);
if (*e)
return EC_ERROR_PARAM1;
in_debug = m;
}
/* Print the mask */
ccprintf("power in: 0x%04x\n", in_signals);
ccprintf("debug mask: 0x%04x\n", in_debug);
/* Print the decode */
ccprintf("bit meanings:\n");
for (i = 0; i < POWER_SIGNAL_COUNT; i++, s++) {
int mask = 1 << i;
ccprintf(" 0x%04x %d %s\n",
mask, in_signals & mask ? 1 : 0, s->name);
}
return EC_SUCCESS;
};
DECLARE_CONSOLE_COMMAND(powerindebug, command_powerindebug,
"[mask]",
"Get/set power input debug mask");
#endif
#ifdef CONFIG_HIBERNATE
static int command_hibernation_delay(int argc, char **argv)
{
char *e;
uint32_t time_g3 = ((uint32_t)(get_time().val - last_shutdown_time))
/ SECOND;
if (argc >= 2) {
uint32_t s = strtoi(argv[1], &e, 0);
if (*e)
return EC_ERROR_PARAM1;
hibernate_delay = s;
}
/* Print the current setting */
ccprintf("Hibernation delay: %d s\n", hibernate_delay);
if (state == POWER_G3 && !extpower_is_present()) {
ccprintf("Time G3: %d s\n", time_g3);
ccprintf("Time left: %d s\n", hibernate_delay - time_g3);
}
return EC_SUCCESS;
}
DECLARE_CONSOLE_COMMAND(hibdelay, command_hibernation_delay,
"[sec]",
"Set the delay before going into hibernation");
static int host_command_hibernation_delay(struct host_cmd_handler_args *args)
{
const struct ec_params_hibernation_delay *p = args->params;
struct ec_response_hibernation_delay *r = args->response;
uint32_t time_g3;
uint64_t t = get_time().val - last_shutdown_time;
uint64divmod(&t, SECOND);
time_g3 = (uint32_t)t;
/* Only change the hibernation delay if seconds is non-zero. */
if (p->seconds)
hibernate_delay = p->seconds;
if (state == POWER_G3 && !extpower_is_present())
r->time_g3 = time_g3;
else
r->time_g3 = 0;
if ((time_g3 != 0) && (time_g3 > hibernate_delay))
r->time_remaining = 0;
else
r->time_remaining = hibernate_delay - time_g3;
r->hibernate_delay = hibernate_delay;
args->response_size = sizeof(struct ec_response_hibernation_delay);
return EC_SUCCESS;
}
DECLARE_HOST_COMMAND(EC_CMD_HIBERNATION_DELAY,
host_command_hibernation_delay,
EC_VER_MASK(0));
#endif /* CONFIG_HIBERNATE */
#ifdef CONFIG_POWER_SHUTDOWN_PAUSE_IN_S5
static int host_command_pause_in_s5(struct host_cmd_handler_args *args)
{
const struct ec_params_get_set_value *p = args->params;
struct ec_response_get_set_value *r = args->response;
if (p->flags & EC_GSV_SET)
pause_in_s5 = p->value;
r->value = pause_in_s5;
args->response_size = sizeof(*r);
return EC_RES_SUCCESS;
}
DECLARE_HOST_COMMAND(EC_CMD_GSV_PAUSE_IN_S5,
host_command_pause_in_s5,
EC_VER_MASK(0));
static int command_pause_in_s5(int argc, char **argv)
{
if (argc > 1 && !parse_bool(argv[1], &pause_in_s5))
return EC_ERROR_INVAL;
ccprintf("pause_in_s5 = %s\n", pause_in_s5 ? "on" : "off");
return EC_SUCCESS;
}
DECLARE_CONSOLE_COMMAND(pause_in_s5, command_pause_in_s5,
"[on|off]",
"Should the AP pause in S5 during shutdown?");
#endif /* CONFIG_POWER_SHUTDOWN_PAUSE_IN_S5 */
#ifdef CONFIG_POWER_TRACK_HOST_SLEEP_STATE
/* Track last reported sleep event */
static enum host_sleep_event host_sleep_state;
void __attribute__((weak))
power_chipset_handle_host_sleep_event(enum host_sleep_event state,
struct host_sleep_event_context *ctx)
{
/* Default weak implementation -- no action required. */
}
static int host_command_host_sleep_event(struct host_cmd_handler_args *args)
{
const struct ec_params_host_sleep_event_v1 *p = args->params;
struct ec_response_host_sleep_event_v1 *r = args->response;
struct host_sleep_event_context ctx;
enum host_sleep_event state = p->sleep_event;
host_sleep_state = state;
ctx.sleep_transitions = 0;
switch (state) {
case HOST_SLEEP_EVENT_S3_SUSPEND:
case HOST_SLEEP_EVENT_S0IX_SUSPEND:
case HOST_SLEEP_EVENT_S3_WAKEABLE_SUSPEND:
ctx.sleep_timeout_ms = EC_HOST_SLEEP_TIMEOUT_DEFAULT;
/* The original version contained only state. */
if (args->version >= 1)
ctx.sleep_timeout_ms =
p->suspend_params.sleep_timeout_ms;
break;
default:
break;
}
power_chipset_handle_host_sleep_event(host_sleep_state, &ctx);
switch (state) {
case HOST_SLEEP_EVENT_S3_RESUME:
case HOST_SLEEP_EVENT_S0IX_RESUME:
if (args->version >= 1) {
r->resume_response.sleep_transitions =
ctx.sleep_transitions;
args->response_size = sizeof(*r);
}
break;
default:
break;
}
return EC_RES_SUCCESS;
}
DECLARE_HOST_COMMAND(EC_CMD_HOST_SLEEP_EVENT,
host_command_host_sleep_event,
EC_VER_MASK(0) | EC_VER_MASK(1));
enum host_sleep_event power_get_host_sleep_state(void)
{
return host_sleep_state;
}
void power_set_host_sleep_state(enum host_sleep_event state)
{
host_sleep_state = state;
}
#endif /* CONFIG_POWER_TRACK_HOST_SLEEP_STATE */
#ifdef CONFIG_POWER_PP5000_CONTROL
/* 5V enable request bitmask from various tasks. */
static uint32_t pwr_5v_en_req;
static struct mutex pwr_5v_ctl_mtx;
void __attribute__((weak)) power_5v_enable(task_id_t tid, int enable)
{
mutex_lock(&pwr_5v_ctl_mtx);
if (enable) /* Set the bit indicating the request. */
pwr_5v_en_req |= 1 << tid;
else /* Clear the task's request bit. */
pwr_5v_en_req &= ~(1 << tid);
/*
* If there are any outstanding requests for the rail to be enabled,
* turn on the rail. Otherwise, turn it off.
*/
if (pwr_5v_en_req)
gpio_set_level(GPIO_EN_PP5000, 1);
else
gpio_set_level(GPIO_EN_PP5000, 0);
mutex_unlock(&pwr_5v_ctl_mtx);
}
#define P5_SYSJUMP_TAG 0x5005 /* "P5" */
static void restore_enable_5v_state(void)
{
const uint32_t *state;
int size;
state = (const uint32_t *) system_get_jump_tag(P5_SYSJUMP_TAG, 0,
&size);
if (state && size == sizeof(pwr_5v_en_req)) {
mutex_lock(&pwr_5v_ctl_mtx);
pwr_5v_en_req |= *state;
mutex_unlock(&pwr_5v_ctl_mtx);
}
}
DECLARE_HOOK(HOOK_INIT, restore_enable_5v_state, HOOK_PRIO_FIRST);
static void preserve_enable_5v_state(void)
{
mutex_lock(&pwr_5v_ctl_mtx);
system_add_jump_tag(P5_SYSJUMP_TAG, 0, sizeof(pwr_5v_en_req),
&pwr_5v_en_req);
mutex_unlock(&pwr_5v_ctl_mtx);
}
DECLARE_HOOK(HOOK_SYSJUMP, preserve_enable_5v_state, HOOK_PRIO_DEFAULT);
#endif /* defined(CONFIG_POWER_PP5000_CONTROL) */
|