summaryrefslogtreecommitdiff
path: root/drivers/soc/qcom/rpmhpd.c
blob: f20e2a49a6695757385020e25a6f96bd53f773ad (plain)
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
// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2018, The Linux Foundation. All rights reserved.*/

#include <linux/err.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/pm_domain.h>
#include <linux/slab.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/pm_opp.h>
#include <soc/qcom/cmd-db.h>
#include <soc/qcom/rpmh.h>
#include <dt-bindings/power/qcom-rpmpd.h>

#define domain_to_rpmhpd(domain) container_of(domain, struct rpmhpd, pd)

#define RPMH_ARC_MAX_LEVELS	16

/**
 * struct rpmhpd - top level RPMh power domain resource data structure
 * @dev:		rpmh power domain controller device
 * @pd:			generic_pm_domain corresponding to the power domain
 * @parent:		generic_pm_domain corresponding to the parent's power domain
 * @peer:		A peer power domain in case Active only Voting is
 *			supported
 * @active_only:	True if it represents an Active only peer
 * @corner:		current corner
 * @active_corner:	current active corner
 * @enable_corner:	lowest non-zero corner
 * @level:		An array of level (vlvl) to corner (hlvl) mappings
 *			derived from cmd-db
 * @level_count:	Number of levels supported by the power domain. max
 *			being 16 (0 - 15)
 * @enabled:		true if the power domain is enabled
 * @res_name:		Resource name used for cmd-db lookup
 * @addr:		Resource address as looped up using resource name from
 *			cmd-db
 * @state_synced:	Indicator that sync_state has been invoked for the rpmhpd resource
 */
struct rpmhpd {
	struct device	*dev;
	struct generic_pm_domain pd;
	struct generic_pm_domain *parent;
	struct rpmhpd	*peer;
	const bool	active_only;
	unsigned int	corner;
	unsigned int	active_corner;
	unsigned int	enable_corner;
	u32		level[RPMH_ARC_MAX_LEVELS];
	size_t		level_count;
	bool		enabled;
	const char	*res_name;
	u32		addr;
	bool		state_synced;
};

struct rpmhpd_desc {
	struct rpmhpd **rpmhpds;
	size_t num_pds;
};

static DEFINE_MUTEX(rpmhpd_lock);

/* RPMH powerdomains */

static struct rpmhpd cx_ao;
static struct rpmhpd mx;
static struct rpmhpd mx_ao;
static struct rpmhpd cx = {
	.pd = { .name = "cx", },
	.peer = &cx_ao,
	.res_name = "cx.lvl",
};

static struct rpmhpd cx_ao = {
	.pd = { .name = "cx_ao", },
	.active_only = true,
	.peer = &cx,
	.res_name = "cx.lvl",
};

static struct rpmhpd cx_ao_w_mx_parent;
static struct rpmhpd cx_w_mx_parent = {
	.pd = { .name = "cx", },
	.peer = &cx_ao_w_mx_parent,
	.parent = &mx.pd,
	.res_name = "cx.lvl",
};

static struct rpmhpd cx_ao_w_mx_parent = {
	.pd = { .name = "cx_ao", },
	.active_only = true,
	.peer = &cx_w_mx_parent,
	.parent = &mx_ao.pd,
	.res_name = "cx.lvl",
};

static struct rpmhpd ebi = {
	.pd = { .name = "ebi", },
	.res_name = "ebi.lvl",
};

static struct rpmhpd gfx = {
	.pd = { .name = "gfx", },
	.res_name = "gfx.lvl",
};

static struct rpmhpd lcx = {
	.pd = { .name = "lcx", },
	.res_name = "lcx.lvl",
};

static struct rpmhpd lmx = {
	.pd = { .name = "lmx", },
	.res_name = "lmx.lvl",
};

static struct rpmhpd mmcx_ao;
static struct rpmhpd mmcx = {
	.pd = { .name = "mmcx", },
	.peer = &mmcx_ao,
	.res_name = "mmcx.lvl",
};

static struct rpmhpd mmcx_ao = {
	.pd = { .name = "mmcx_ao", },
	.active_only = true,
	.peer = &mmcx,
	.res_name = "mmcx.lvl",
};

static struct rpmhpd mmcx_ao_w_cx_parent;
static struct rpmhpd mmcx_w_cx_parent = {
	.pd = { .name = "mmcx", },
	.peer = &mmcx_ao_w_cx_parent,
	.parent = &cx.pd,
	.res_name = "mmcx.lvl",
};

static struct rpmhpd mmcx_ao_w_cx_parent = {
	.pd = { .name = "mmcx_ao", },
	.active_only = true,
	.peer = &mmcx_w_cx_parent,
	.parent = &cx_ao.pd,
	.res_name = "mmcx.lvl",
};

static struct rpmhpd mss = {
	.pd = { .name = "mss", },
	.res_name = "mss.lvl",
};

static struct rpmhpd mx_ao;
static struct rpmhpd mx = {
	.pd = { .name = "mx", },
	.peer = &mx_ao,
	.res_name = "mx.lvl",
};

static struct rpmhpd mx_ao = {
	.pd = { .name = "mx_ao", },
	.active_only = true,
	.peer = &mx,
	.res_name = "mx.lvl",
};

static struct rpmhpd mxc_ao;
static struct rpmhpd mxc = {
	.pd = { .name = "mxc", },
	.peer = &mxc_ao,
	.res_name = "mxc.lvl",
};

static struct rpmhpd mxc_ao = {
	.pd = { .name = "mxc_ao", },
	.active_only = true,
	.peer = &mxc,
	.res_name = "mxc.lvl",
};

static struct rpmhpd nsp = {
	.pd = { .name = "nsp", },
	.res_name = "nsp.lvl",
};

static struct rpmhpd nsp0 = {
	.pd = { .name = "nsp0", },
	.res_name = "nsp0.lvl",
};

static struct rpmhpd nsp1 = {
	.pd = { .name = "nsp1", },
	.res_name = "nsp1.lvl",
};

static struct rpmhpd qphy = {
	.pd = { .name = "qphy", },
	.res_name = "qphy.lvl",
};

/* SA8540P RPMH powerdomains */
static struct rpmhpd *sa8540p_rpmhpds[] = {
	[SC8280XP_CX] = &cx,
	[SC8280XP_CX_AO] = &cx_ao,
	[SC8280XP_EBI] = &ebi,
	[SC8280XP_GFX] = &gfx,
	[SC8280XP_LCX] = &lcx,
	[SC8280XP_LMX] = &lmx,
	[SC8280XP_MMCX] = &mmcx,
	[SC8280XP_MMCX_AO] = &mmcx_ao,
	[SC8280XP_MX] = &mx,
	[SC8280XP_MX_AO] = &mx_ao,
	[SC8280XP_NSP] = &nsp,
};

static const struct rpmhpd_desc sa8540p_desc = {
	.rpmhpds = sa8540p_rpmhpds,
	.num_pds = ARRAY_SIZE(sa8540p_rpmhpds),
};

/* SA8775P RPMH power domains */
static struct rpmhpd *sa8775p_rpmhpds[] = {
	[SA8775P_CX] = &cx,
	[SA8775P_CX_AO] = &cx_ao,
	[SA8775P_EBI] = &ebi,
	[SA8775P_GFX] = &gfx,
	[SA8775P_LCX] = &lcx,
	[SA8775P_LMX] = &lmx,
	[SA8775P_MMCX] = &mmcx,
	[SA8775P_MMCX_AO] = &mmcx_ao,
	[SA8775P_MXC] = &mxc,
	[SA8775P_MXC_AO] = &mxc_ao,
	[SA8775P_MX] = &mx,
	[SA8775P_MX_AO] = &mx_ao,
	[SA8775P_NSP0] = &nsp0,
	[SA8775P_NSP1] = &nsp1,
};

static const struct rpmhpd_desc sa8775p_desc = {
	.rpmhpds = sa8775p_rpmhpds,
	.num_pds = ARRAY_SIZE(sa8775p_rpmhpds),
};

/* SDM670 RPMH powerdomains */
static struct rpmhpd *sdm670_rpmhpds[] = {
	[SDM670_CX] = &cx_w_mx_parent,
	[SDM670_CX_AO] = &cx_ao_w_mx_parent,
	[SDM670_GFX] = &gfx,
	[SDM670_LCX] = &lcx,
	[SDM670_LMX] = &lmx,
	[SDM670_MSS] = &mss,
	[SDM670_MX] = &mx,
	[SDM670_MX_AO] = &mx_ao,
};

static const struct rpmhpd_desc sdm670_desc = {
	.rpmhpds = sdm670_rpmhpds,
	.num_pds = ARRAY_SIZE(sdm670_rpmhpds),
};

/* SDM845 RPMH powerdomains */
static struct rpmhpd *sdm845_rpmhpds[] = {
	[SDM845_CX] = &cx_w_mx_parent,
	[SDM845_CX_AO] = &cx_ao_w_mx_parent,
	[SDM845_EBI] = &ebi,
	[SDM845_GFX] = &gfx,
	[SDM845_LCX] = &lcx,
	[SDM845_LMX] = &lmx,
	[SDM845_MSS] = &mss,
	[SDM845_MX] = &mx,
	[SDM845_MX_AO] = &mx_ao,
};

static const struct rpmhpd_desc sdm845_desc = {
	.rpmhpds = sdm845_rpmhpds,
	.num_pds = ARRAY_SIZE(sdm845_rpmhpds),
};

/* SDX55 RPMH powerdomains */
static struct rpmhpd *sdx55_rpmhpds[] = {
	[SDX55_CX] = &cx_w_mx_parent,
	[SDX55_MSS] = &mss,
	[SDX55_MX] = &mx,
};

static const struct rpmhpd_desc sdx55_desc = {
	.rpmhpds = sdx55_rpmhpds,
	.num_pds = ARRAY_SIZE(sdx55_rpmhpds),
};

/* SDX65 RPMH powerdomains */
static struct rpmhpd *sdx65_rpmhpds[] = {
	[SDX65_CX] = &cx_w_mx_parent,
	[SDX65_CX_AO] = &cx_ao_w_mx_parent,
	[SDX65_MSS] = &mss,
	[SDX65_MX] = &mx,
	[SDX65_MX_AO] = &mx_ao,
	[SDX65_MXC] = &mxc,
};

static const struct rpmhpd_desc sdx65_desc = {
	.rpmhpds = sdx65_rpmhpds,
	.num_pds = ARRAY_SIZE(sdx65_rpmhpds),
};

/* SM6350 RPMH powerdomains */
static struct rpmhpd *sm6350_rpmhpds[] = {
	[SM6350_CX] = &cx_w_mx_parent,
	[SM6350_GFX] = &gfx,
	[SM6350_LCX] = &lcx,
	[SM6350_LMX] = &lmx,
	[SM6350_MSS] = &mss,
	[SM6350_MX] = &mx,
};

static const struct rpmhpd_desc sm6350_desc = {
	.rpmhpds = sm6350_rpmhpds,
	.num_pds = ARRAY_SIZE(sm6350_rpmhpds),
};

/* SM8150 RPMH powerdomains */
static struct rpmhpd *sm8150_rpmhpds[] = {
	[SM8150_CX] = &cx_w_mx_parent,
	[SM8150_CX_AO] = &cx_ao_w_mx_parent,
	[SM8150_EBI] = &ebi,
	[SM8150_GFX] = &gfx,
	[SM8150_LCX] = &lcx,
	[SM8150_LMX] = &lmx,
	[SM8150_MMCX] = &mmcx,
	[SM8150_MMCX_AO] = &mmcx_ao,
	[SM8150_MSS] = &mss,
	[SM8150_MX] = &mx,
	[SM8150_MX_AO] = &mx_ao,
};

static const struct rpmhpd_desc sm8150_desc = {
	.rpmhpds = sm8150_rpmhpds,
	.num_pds = ARRAY_SIZE(sm8150_rpmhpds),
};

/* SM8250 RPMH powerdomains */
static struct rpmhpd *sm8250_rpmhpds[] = {
	[SM8250_CX] = &cx_w_mx_parent,
	[SM8250_CX_AO] = &cx_ao_w_mx_parent,
	[SM8250_EBI] = &ebi,
	[SM8250_GFX] = &gfx,
	[SM8250_LCX] = &lcx,
	[SM8250_LMX] = &lmx,
	[SM8250_MMCX] = &mmcx,
	[SM8250_MMCX_AO] = &mmcx_ao,
	[SM8250_MX] = &mx,
	[SM8250_MX_AO] = &mx_ao,
};

static const struct rpmhpd_desc sm8250_desc = {
	.rpmhpds = sm8250_rpmhpds,
	.num_pds = ARRAY_SIZE(sm8250_rpmhpds),
};

/* SM8350 Power domains */
static struct rpmhpd *sm8350_rpmhpds[] = {
	[SM8350_CX] = &cx_w_mx_parent,
	[SM8350_CX_AO] = &cx_ao_w_mx_parent,
	[SM8350_EBI] = &ebi,
	[SM8350_GFX] = &gfx,
	[SM8350_LCX] = &lcx,
	[SM8350_LMX] = &lmx,
	[SM8350_MMCX] = &mmcx,
	[SM8350_MMCX_AO] = &mmcx_ao,
	[SM8350_MSS] = &mss,
	[SM8350_MX] = &mx,
	[SM8350_MX_AO] = &mx_ao,
	[SM8350_MXC] = &mxc,
	[SM8350_MXC_AO] = &mxc_ao,
};

static const struct rpmhpd_desc sm8350_desc = {
	.rpmhpds = sm8350_rpmhpds,
	.num_pds = ARRAY_SIZE(sm8350_rpmhpds),
};

/* SM8450 RPMH powerdomains */
static struct rpmhpd *sm8450_rpmhpds[] = {
	[SM8450_CX] = &cx,
	[SM8450_CX_AO] = &cx_ao,
	[SM8450_EBI] = &ebi,
	[SM8450_GFX] = &gfx,
	[SM8450_LCX] = &lcx,
	[SM8450_LMX] = &lmx,
	[SM8450_MMCX] = &mmcx_w_cx_parent,
	[SM8450_MMCX_AO] = &mmcx_ao_w_cx_parent,
	[SM8450_MSS] = &mss,
	[SM8450_MX] = &mx,
	[SM8450_MX_AO] = &mx_ao,
	[SM8450_MXC] = &mxc,
	[SM8450_MXC_AO] = &mxc_ao,
};

static const struct rpmhpd_desc sm8450_desc = {
	.rpmhpds = sm8450_rpmhpds,
	.num_pds = ARRAY_SIZE(sm8450_rpmhpds),
};

/* SM8550 RPMH powerdomains */
static struct rpmhpd *sm8550_rpmhpds[] = {
	[SM8550_CX] = &cx,
	[SM8550_CX_AO] = &cx_ao,
	[SM8550_EBI] = &ebi,
	[SM8550_GFX] = &gfx,
	[SM8550_LCX] = &lcx,
	[SM8550_LMX] = &lmx,
	[SM8550_MMCX] = &mmcx_w_cx_parent,
	[SM8550_MMCX_AO] = &mmcx_ao_w_cx_parent,
	[SM8550_MSS] = &mss,
	[SM8550_MX] = &mx,
	[SM8550_MX_AO] = &mx_ao,
	[SM8550_MXC] = &mxc,
	[SM8550_MXC_AO] = &mxc_ao,
	[SM8550_NSP] = &nsp,
};

static const struct rpmhpd_desc sm8550_desc = {
	.rpmhpds = sm8550_rpmhpds,
	.num_pds = ARRAY_SIZE(sm8550_rpmhpds),
};

/* QDU1000/QRU1000 RPMH powerdomains */
static struct rpmhpd *qdu1000_rpmhpds[] = {
	[QDU1000_CX] = &cx,
	[QDU1000_EBI] = &ebi,
	[QDU1000_MSS] = &mss,
	[QDU1000_MX] = &mx,
};

static const struct rpmhpd_desc qdu1000_desc = {
	.rpmhpds = qdu1000_rpmhpds,
	.num_pds = ARRAY_SIZE(qdu1000_rpmhpds),
};

/* SC7180 RPMH powerdomains */
static struct rpmhpd *sc7180_rpmhpds[] = {
	[SC7180_CX] = &cx_w_mx_parent,
	[SC7180_CX_AO] = &cx_ao_w_mx_parent,
	[SC7180_GFX] = &gfx,
	[SC7180_LCX] = &lcx,
	[SC7180_LMX] = &lmx,
	[SC7180_MSS] = &mss,
	[SC7180_MX] = &mx,
	[SC7180_MX_AO] = &mx_ao,
};

static const struct rpmhpd_desc sc7180_desc = {
	.rpmhpds = sc7180_rpmhpds,
	.num_pds = ARRAY_SIZE(sc7180_rpmhpds),
};

/* SC7280 RPMH powerdomains */
static struct rpmhpd *sc7280_rpmhpds[] = {
	[SC7280_CX] = &cx,
	[SC7280_CX_AO] = &cx_ao,
	[SC7280_EBI] = &ebi,
	[SC7280_GFX] = &gfx,
	[SC7280_LCX] = &lcx,
	[SC7280_LMX] = &lmx,
	[SC7280_MSS] = &mss,
	[SC7280_MX] = &mx,
	[SC7280_MX_AO] = &mx_ao,
};

static const struct rpmhpd_desc sc7280_desc = {
	.rpmhpds = sc7280_rpmhpds,
	.num_pds = ARRAY_SIZE(sc7280_rpmhpds),
};

/* SC8180x RPMH powerdomains */
static struct rpmhpd *sc8180x_rpmhpds[] = {
	[SC8180X_CX] = &cx_w_mx_parent,
	[SC8180X_CX_AO] = &cx_ao_w_mx_parent,
	[SC8180X_EBI] = &ebi,
	[SC8180X_GFX] = &gfx,
	[SC8180X_LCX] = &lcx,
	[SC8180X_LMX] = &lmx,
	[SC8180X_MMCX] = &mmcx,
	[SC8180X_MMCX_AO] = &mmcx_ao,
	[SC8180X_MSS] = &mss,
	[SC8180X_MX] = &mx,
	[SC8180X_MX_AO] = &mx_ao,
};

static const struct rpmhpd_desc sc8180x_desc = {
	.rpmhpds = sc8180x_rpmhpds,
	.num_pds = ARRAY_SIZE(sc8180x_rpmhpds),
};

/* SC8280xp RPMH powerdomains */
static struct rpmhpd *sc8280xp_rpmhpds[] = {
	[SC8280XP_CX] = &cx,
	[SC8280XP_CX_AO] = &cx_ao,
	[SC8280XP_EBI] = &ebi,
	[SC8280XP_GFX] = &gfx,
	[SC8280XP_LCX] = &lcx,
	[SC8280XP_LMX] = &lmx,
	[SC8280XP_MMCX] = &mmcx,
	[SC8280XP_MMCX_AO] = &mmcx_ao,
	[SC8280XP_MX] = &mx,
	[SC8280XP_MX_AO] = &mx_ao,
	[SC8280XP_NSP] = &nsp,
	[SC8280XP_QPHY] = &qphy,
};

static const struct rpmhpd_desc sc8280xp_desc = {
	.rpmhpds = sc8280xp_rpmhpds,
	.num_pds = ARRAY_SIZE(sc8280xp_rpmhpds),
};

static const struct of_device_id rpmhpd_match_table[] = {
	{ .compatible = "qcom,qdu1000-rpmhpd", .data = &qdu1000_desc },
	{ .compatible = "qcom,sa8540p-rpmhpd", .data = &sa8540p_desc },
	{ .compatible = "qcom,sa8775p-rpmhpd", .data = &sa8775p_desc },
	{ .compatible = "qcom,sc7180-rpmhpd", .data = &sc7180_desc },
	{ .compatible = "qcom,sc7280-rpmhpd", .data = &sc7280_desc },
	{ .compatible = "qcom,sc8180x-rpmhpd", .data = &sc8180x_desc },
	{ .compatible = "qcom,sc8280xp-rpmhpd", .data = &sc8280xp_desc },
	{ .compatible = "qcom,sdm670-rpmhpd", .data = &sdm670_desc },
	{ .compatible = "qcom,sdm845-rpmhpd", .data = &sdm845_desc },
	{ .compatible = "qcom,sdx55-rpmhpd", .data = &sdx55_desc},
	{ .compatible = "qcom,sdx65-rpmhpd", .data = &sdx65_desc},
	{ .compatible = "qcom,sm6350-rpmhpd", .data = &sm6350_desc },
	{ .compatible = "qcom,sm8150-rpmhpd", .data = &sm8150_desc },
	{ .compatible = "qcom,sm8250-rpmhpd", .data = &sm8250_desc },
	{ .compatible = "qcom,sm8350-rpmhpd", .data = &sm8350_desc },
	{ .compatible = "qcom,sm8450-rpmhpd", .data = &sm8450_desc },
	{ .compatible = "qcom,sm8550-rpmhpd", .data = &sm8550_desc },
	{ }
};
MODULE_DEVICE_TABLE(of, rpmhpd_match_table);

static int rpmhpd_send_corner(struct rpmhpd *pd, int state,
			      unsigned int corner, bool sync)
{
	struct tcs_cmd cmd = {
		.addr = pd->addr,
		.data = corner,
	};

	/*
	 * Wait for an ack only when we are increasing the
	 * perf state of the power domain
	 */
	if (sync)
		return rpmh_write(pd->dev, state, &cmd, 1);
	else
		return rpmh_write_async(pd->dev, state, &cmd, 1);
}

static void to_active_sleep(struct rpmhpd *pd, unsigned int corner,
			    unsigned int *active, unsigned int *sleep)
{
	*active = corner;

	if (pd->active_only)
		*sleep = 0;
	else
		*sleep = *active;
}

/*
 * This function is used to aggregate the votes across the active only
 * resources and its peers. The aggregated votes are sent to RPMh as
 * ACTIVE_ONLY votes (which take effect immediately), as WAKE_ONLY votes
 * (applied by RPMh on system wakeup) and as SLEEP votes (applied by RPMh
 * on system sleep).
 * We send ACTIVE_ONLY votes for resources without any peers. For others,
 * which have an active only peer, all 3 votes are sent.
 */
static int rpmhpd_aggregate_corner(struct rpmhpd *pd, unsigned int corner)
{
	int ret;
	struct rpmhpd *peer = pd->peer;
	unsigned int active_corner, sleep_corner;
	unsigned int this_active_corner = 0, this_sleep_corner = 0;
	unsigned int peer_active_corner = 0, peer_sleep_corner = 0;

	if (pd->state_synced) {
		to_active_sleep(pd, corner, &this_active_corner, &this_sleep_corner);
	} else {
		/* Clamp to highest corner if sync_state hasn't happened */
		this_active_corner = pd->level_count - 1;
		this_sleep_corner = pd->level_count - 1;
	}

	if (peer && peer->enabled)
		to_active_sleep(peer, peer->corner, &peer_active_corner,
				&peer_sleep_corner);

	active_corner = max(this_active_corner, peer_active_corner);

	ret = rpmhpd_send_corner(pd, RPMH_ACTIVE_ONLY_STATE, active_corner,
				 active_corner > pd->active_corner);
	if (ret)
		return ret;

	pd->active_corner = active_corner;

	if (peer) {
		peer->active_corner = active_corner;

		ret = rpmhpd_send_corner(pd, RPMH_WAKE_ONLY_STATE,
					 active_corner, false);
		if (ret)
			return ret;

		sleep_corner = max(this_sleep_corner, peer_sleep_corner);

		return rpmhpd_send_corner(pd, RPMH_SLEEP_STATE, sleep_corner,
					  false);
	}

	return ret;
}

static int rpmhpd_power_on(struct generic_pm_domain *domain)
{
	struct rpmhpd *pd = domain_to_rpmhpd(domain);
	unsigned int corner;
	int ret;

	mutex_lock(&rpmhpd_lock);

	corner = max(pd->corner, pd->enable_corner);
	ret = rpmhpd_aggregate_corner(pd, corner);
	if (!ret)
		pd->enabled = true;

	mutex_unlock(&rpmhpd_lock);

	return ret;
}

static int rpmhpd_power_off(struct generic_pm_domain *domain)
{
	struct rpmhpd *pd = domain_to_rpmhpd(domain);
	int ret;

	mutex_lock(&rpmhpd_lock);

	ret = rpmhpd_aggregate_corner(pd, 0);
	if (!ret)
		pd->enabled = false;

	mutex_unlock(&rpmhpd_lock);

	return ret;
}

static int rpmhpd_set_performance_state(struct generic_pm_domain *domain,
					unsigned int level)
{
	struct rpmhpd *pd = domain_to_rpmhpd(domain);
	int ret = 0, i;

	mutex_lock(&rpmhpd_lock);

	for (i = 0; i < pd->level_count; i++)
		if (level <= pd->level[i])
			break;

	/*
	 * If the level requested is more than that supported by the
	 * max corner, just set it to max anyway.
	 */
	if (i == pd->level_count)
		i--;

	if (pd->enabled) {
		/* Ensure that the domain isn't turn off */
		if (i < pd->enable_corner)
			i = pd->enable_corner;

		ret = rpmhpd_aggregate_corner(pd, i);
		if (ret)
			goto out;
	}

	pd->corner = i;
out:
	mutex_unlock(&rpmhpd_lock);

	return ret;
}

static unsigned int rpmhpd_get_performance_state(struct generic_pm_domain *genpd,
						 struct dev_pm_opp *opp)
{
	return dev_pm_opp_get_level(opp);
}

static int rpmhpd_update_level_mapping(struct rpmhpd *rpmhpd)
{
	int i;
	const u16 *buf;

	buf = cmd_db_read_aux_data(rpmhpd->res_name, &rpmhpd->level_count);
	if (IS_ERR(buf))
		return PTR_ERR(buf);

	/* 2 bytes used for each command DB aux data entry */
	rpmhpd->level_count >>= 1;

	if (rpmhpd->level_count > RPMH_ARC_MAX_LEVELS)
		return -EINVAL;

	for (i = 0; i < rpmhpd->level_count; i++) {
		rpmhpd->level[i] = buf[i];

		/* Remember the first corner with non-zero level */
		if (!rpmhpd->level[rpmhpd->enable_corner] && rpmhpd->level[i])
			rpmhpd->enable_corner = i;

		/*
		 * The AUX data may be zero padded.  These 0 valued entries at
		 * the end of the map must be ignored.
		 */
		if (i > 0 && rpmhpd->level[i] == 0) {
			rpmhpd->level_count = i;
			break;
		}
		pr_debug("%s: ARC hlvl=%2d --> vlvl=%4u\n", rpmhpd->res_name, i,
			 rpmhpd->level[i]);
	}

	return 0;
}

static int rpmhpd_probe(struct platform_device *pdev)
{
	int i, ret;
	size_t num_pds;
	struct device *dev = &pdev->dev;
	struct genpd_onecell_data *data;
	struct rpmhpd **rpmhpds;
	const struct rpmhpd_desc *desc;

	desc = of_device_get_match_data(dev);
	if (!desc)
		return -EINVAL;

	rpmhpds = desc->rpmhpds;
	num_pds = desc->num_pds;

	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
	if (!data)
		return -ENOMEM;

	data->domains = devm_kcalloc(dev, num_pds, sizeof(*data->domains),
				     GFP_KERNEL);
	if (!data->domains)
		return -ENOMEM;

	data->num_domains = num_pds;

	for (i = 0; i < num_pds; i++) {
		if (!rpmhpds[i])
			continue;

		rpmhpds[i]->dev = dev;
		rpmhpds[i]->addr = cmd_db_read_addr(rpmhpds[i]->res_name);
		if (!rpmhpds[i]->addr) {
			dev_err(dev, "Could not find RPMh address for resource %s\n",
				rpmhpds[i]->res_name);
			return -ENODEV;
		}

		ret = cmd_db_read_slave_id(rpmhpds[i]->res_name);
		if (ret != CMD_DB_HW_ARC) {
			dev_err(dev, "RPMh slave ID mismatch\n");
			return -EINVAL;
		}

		ret = rpmhpd_update_level_mapping(rpmhpds[i]);
		if (ret)
			return ret;

		rpmhpds[i]->pd.power_off = rpmhpd_power_off;
		rpmhpds[i]->pd.power_on = rpmhpd_power_on;
		rpmhpds[i]->pd.set_performance_state = rpmhpd_set_performance_state;
		rpmhpds[i]->pd.opp_to_performance_state = rpmhpd_get_performance_state;
		pm_genpd_init(&rpmhpds[i]->pd, NULL, true);

		data->domains[i] = &rpmhpds[i]->pd;
	}

	/* Add subdomains */
	for (i = 0; i < num_pds; i++) {
		if (!rpmhpds[i])
			continue;
		if (rpmhpds[i]->parent)
			pm_genpd_add_subdomain(rpmhpds[i]->parent,
					       &rpmhpds[i]->pd);
	}

	return of_genpd_add_provider_onecell(pdev->dev.of_node, data);
}

static void rpmhpd_sync_state(struct device *dev)
{
	const struct rpmhpd_desc *desc = of_device_get_match_data(dev);
	struct rpmhpd **rpmhpds = desc->rpmhpds;
	unsigned int corner;
	struct rpmhpd *pd;
	unsigned int i;
	int ret;

	mutex_lock(&rpmhpd_lock);
	for (i = 0; i < desc->num_pds; i++) {
		pd = rpmhpds[i];
		if (!pd)
			continue;

		pd->state_synced = true;
		if (pd->enabled)
			corner = max(pd->corner, pd->enable_corner);
		else
			corner = 0;

		ret = rpmhpd_aggregate_corner(pd, corner);
		if (ret)
			dev_err(dev, "failed to sync %s\n", pd->res_name);
	}
	mutex_unlock(&rpmhpd_lock);
}

static struct platform_driver rpmhpd_driver = {
	.driver = {
		.name = "qcom-rpmhpd",
		.of_match_table = rpmhpd_match_table,
		.suppress_bind_attrs = true,
		.sync_state = rpmhpd_sync_state,
	},
	.probe = rpmhpd_probe,
};

static int __init rpmhpd_init(void)
{
	return platform_driver_register(&rpmhpd_driver);
}
core_initcall(rpmhpd_init);

MODULE_DESCRIPTION("Qualcomm Technologies, Inc. RPMh Power Domain Driver");
MODULE_LICENSE("GPL v2");