summaryrefslogtreecommitdiff
path: root/drivers/regulator/qcom_rpm-regulator.c
blob: 3c41b71a1f5298004ea7bceeb82d99ed2310ed23 (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
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
// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2014, Sony Mobile Communications AB.
 * Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
 */

#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/of_regulator.h>
#include <linux/mfd/qcom_rpm.h>

#include <dt-bindings/mfd/qcom-rpm.h>

#define MAX_REQUEST_LEN 2

struct request_member {
	int		word;
	unsigned int	mask;
	int		shift;
};

struct rpm_reg_parts {
	struct request_member mV;		/* used if voltage is in mV */
	struct request_member uV;		/* used if voltage is in uV */
	struct request_member ip;		/* peak current in mA */
	struct request_member pd;		/* pull down enable */
	struct request_member ia;		/* average current in mA */
	struct request_member fm;		/* force mode */
	struct request_member pm;		/* power mode */
	struct request_member pc;		/* pin control */
	struct request_member pf;		/* pin function */
	struct request_member enable_state;	/* NCP and switch */
	struct request_member comp_mode;	/* NCP */
	struct request_member freq;		/* frequency: NCP and SMPS */
	struct request_member freq_clk_src;	/* clock source: SMPS */
	struct request_member hpm;		/* switch: control OCP and SS */
	int request_len;
};

#define FORCE_MODE_IS_2_BITS(reg) \
	(((reg)->parts->fm.mask >> (reg)->parts->fm.shift) == 3)

struct qcom_rpm_reg {
	struct qcom_rpm *rpm;

	struct mutex lock;
	struct device *dev;
	struct regulator_desc desc;
	const struct rpm_reg_parts *parts;

	int resource;
	u32 val[MAX_REQUEST_LEN];

	int uV;
	int is_enabled;

	bool supports_force_mode_auto;
	bool supports_force_mode_bypass;
};

static const struct rpm_reg_parts rpm8660_ldo_parts = {
	.request_len    = 2,
	.mV             = { 0, 0x00000FFF,  0 },
	.ip             = { 0, 0x00FFF000, 12 },
	.fm             = { 0, 0x03000000, 24 },
	.pc             = { 0, 0x3C000000, 26 },
	.pf             = { 0, 0xC0000000, 30 },
	.pd             = { 1, 0x00000001,  0 },
	.ia             = { 1, 0x00001FFE,  1 },
};

static const struct rpm_reg_parts rpm8660_smps_parts = {
	.request_len    = 2,
	.mV             = { 0, 0x00000FFF,  0 },
	.ip             = { 0, 0x00FFF000, 12 },
	.fm             = { 0, 0x03000000, 24 },
	.pc             = { 0, 0x3C000000, 26 },
	.pf             = { 0, 0xC0000000, 30 },
	.pd             = { 1, 0x00000001,  0 },
	.ia             = { 1, 0x00001FFE,  1 },
	.freq           = { 1, 0x001FE000, 13 },
	.freq_clk_src   = { 1, 0x00600000, 21 },
};

static const struct rpm_reg_parts rpm8660_switch_parts = {
	.request_len    = 1,
	.enable_state   = { 0, 0x00000001,  0 },
	.pd             = { 0, 0x00000002,  1 },
	.pc             = { 0, 0x0000003C,  2 },
	.pf             = { 0, 0x000000C0,  6 },
	.hpm            = { 0, 0x00000300,  8 },
};

static const struct rpm_reg_parts rpm8660_ncp_parts = {
	.request_len    = 1,
	.mV             = { 0, 0x00000FFF,  0 },
	.enable_state   = { 0, 0x00001000, 12 },
	.comp_mode      = { 0, 0x00002000, 13 },
	.freq           = { 0, 0x003FC000, 14 },
};

static const struct rpm_reg_parts rpm8960_ldo_parts = {
	.request_len    = 2,
	.uV             = { 0, 0x007FFFFF,  0 },
	.pd             = { 0, 0x00800000, 23 },
	.pc             = { 0, 0x0F000000, 24 },
	.pf             = { 0, 0xF0000000, 28 },
	.ip             = { 1, 0x000003FF,  0 },
	.ia             = { 1, 0x000FFC00, 10 },
	.fm             = { 1, 0x00700000, 20 },
};

static const struct rpm_reg_parts rpm8960_smps_parts = {
	.request_len    = 2,
	.uV             = { 0, 0x007FFFFF,  0 },
	.pd             = { 0, 0x00800000, 23 },
	.pc             = { 0, 0x0F000000, 24 },
	.pf             = { 0, 0xF0000000, 28 },
	.ip             = { 1, 0x000003FF,  0 },
	.ia             = { 1, 0x000FFC00, 10 },
	.fm             = { 1, 0x00700000, 20 },
	.pm             = { 1, 0x00800000, 23 },
	.freq           = { 1, 0x1F000000, 24 },
	.freq_clk_src   = { 1, 0x60000000, 29 },
};

static const struct rpm_reg_parts rpm8960_switch_parts = {
	.request_len    = 1,
	.enable_state   = { 0, 0x00000001,  0 },
	.pd             = { 0, 0x00000002,  1 },
	.pc             = { 0, 0x0000003C,  2 },
	.pf             = { 0, 0x000003C0,  6 },
	.hpm            = { 0, 0x00000C00, 10 },
};

static const struct rpm_reg_parts rpm8960_ncp_parts = {
	.request_len    = 1,
	.uV             = { 0, 0x007FFFFF,  0 },
	.enable_state   = { 0, 0x00800000, 23 },
	.comp_mode      = { 0, 0x01000000, 24 },
	.freq           = { 0, 0x3E000000, 25 },
};

/*
 * Physically available PMIC regulator voltage ranges
 */
static const struct linear_range pldo_ranges[] = {
	REGULATOR_LINEAR_RANGE( 750000,   0,  59, 12500),
	REGULATOR_LINEAR_RANGE(1500000,  60, 123, 25000),
	REGULATOR_LINEAR_RANGE(3100000, 124, 160, 50000),
};

static const struct linear_range nldo_ranges[] = {
	REGULATOR_LINEAR_RANGE( 750000,   0,  63, 12500),
};

static const struct linear_range nldo1200_ranges[] = {
	REGULATOR_LINEAR_RANGE( 375000,   0,  59,  6250),
	REGULATOR_LINEAR_RANGE( 750000,  60, 123, 12500),
};

static const struct linear_range smps_ranges[] = {
	REGULATOR_LINEAR_RANGE( 375000,   0,  29, 12500),
	REGULATOR_LINEAR_RANGE( 750000,  30,  89, 12500),
	REGULATOR_LINEAR_RANGE(1500000,  90, 153, 25000),
};

static const struct linear_range ftsmps_ranges[] = {
	REGULATOR_LINEAR_RANGE( 350000,   0,   6, 50000),
	REGULATOR_LINEAR_RANGE( 700000,   7,  63, 12500),
	REGULATOR_LINEAR_RANGE(1500000,  64, 100, 50000),
};

static const struct linear_range smb208_ranges[] = {
	REGULATOR_LINEAR_RANGE( 375000,   0,  29, 12500),
	REGULATOR_LINEAR_RANGE( 750000,  30,  89, 12500),
	REGULATOR_LINEAR_RANGE(1500000,  90, 153, 25000),
	REGULATOR_LINEAR_RANGE(3100000, 154, 234, 25000),
};

static const struct linear_range ncp_ranges[] = {
	REGULATOR_LINEAR_RANGE(1500000,   0,  31, 50000),
};

static int rpm_reg_write(struct qcom_rpm_reg *vreg,
			 const struct request_member *req,
			 const int value)
{
	if (WARN_ON((value << req->shift) & ~req->mask))
		return -EINVAL;

	vreg->val[req->word] &= ~req->mask;
	vreg->val[req->word] |= value << req->shift;

	return qcom_rpm_write(vreg->rpm,
			      QCOM_RPM_ACTIVE_STATE,
			      vreg->resource,
			      vreg->val,
			      vreg->parts->request_len);
}

static int rpm_reg_set_mV_sel(struct regulator_dev *rdev,
			      unsigned selector)
{
	struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
	const struct rpm_reg_parts *parts = vreg->parts;
	const struct request_member *req = &parts->mV;
	int ret = 0;
	int uV;

	if (req->mask == 0)
		return -EINVAL;

	uV = regulator_list_voltage_linear_range(rdev, selector);
	if (uV < 0)
		return uV;

	mutex_lock(&vreg->lock);
	if (vreg->is_enabled)
		ret = rpm_reg_write(vreg, req, uV / 1000);

	if (!ret)
		vreg->uV = uV;
	mutex_unlock(&vreg->lock);

	return ret;
}

static int rpm_reg_set_uV_sel(struct regulator_dev *rdev,
			      unsigned selector)
{
	struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
	const struct rpm_reg_parts *parts = vreg->parts;
	const struct request_member *req = &parts->uV;
	int ret = 0;
	int uV;

	if (req->mask == 0)
		return -EINVAL;

	uV = regulator_list_voltage_linear_range(rdev, selector);
	if (uV < 0)
		return uV;

	mutex_lock(&vreg->lock);
	if (vreg->is_enabled)
		ret = rpm_reg_write(vreg, req, uV);

	if (!ret)
		vreg->uV = uV;
	mutex_unlock(&vreg->lock);

	return ret;
}

static int rpm_reg_get_voltage(struct regulator_dev *rdev)
{
	struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);

	return vreg->uV;
}

static int rpm_reg_mV_enable(struct regulator_dev *rdev)
{
	struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
	const struct rpm_reg_parts *parts = vreg->parts;
	const struct request_member *req = &parts->mV;
	int ret;

	if (req->mask == 0)
		return -EINVAL;

	mutex_lock(&vreg->lock);
	ret = rpm_reg_write(vreg, req, vreg->uV / 1000);
	if (!ret)
		vreg->is_enabled = 1;
	mutex_unlock(&vreg->lock);

	return ret;
}

static int rpm_reg_uV_enable(struct regulator_dev *rdev)
{
	struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
	const struct rpm_reg_parts *parts = vreg->parts;
	const struct request_member *req = &parts->uV;
	int ret;

	if (req->mask == 0)
		return -EINVAL;

	mutex_lock(&vreg->lock);
	ret = rpm_reg_write(vreg, req, vreg->uV);
	if (!ret)
		vreg->is_enabled = 1;
	mutex_unlock(&vreg->lock);

	return ret;
}

static int rpm_reg_switch_enable(struct regulator_dev *rdev)
{
	struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
	const struct rpm_reg_parts *parts = vreg->parts;
	const struct request_member *req = &parts->enable_state;
	int ret;

	if (req->mask == 0)
		return -EINVAL;

	mutex_lock(&vreg->lock);
	ret = rpm_reg_write(vreg, req, 1);
	if (!ret)
		vreg->is_enabled = 1;
	mutex_unlock(&vreg->lock);

	return ret;
}

static int rpm_reg_mV_disable(struct regulator_dev *rdev)
{
	struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
	const struct rpm_reg_parts *parts = vreg->parts;
	const struct request_member *req = &parts->mV;
	int ret;

	if (req->mask == 0)
		return -EINVAL;

	mutex_lock(&vreg->lock);
	ret = rpm_reg_write(vreg, req, 0);
	if (!ret)
		vreg->is_enabled = 0;
	mutex_unlock(&vreg->lock);

	return ret;
}

static int rpm_reg_uV_disable(struct regulator_dev *rdev)
{
	struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
	const struct rpm_reg_parts *parts = vreg->parts;
	const struct request_member *req = &parts->uV;
	int ret;

	if (req->mask == 0)
		return -EINVAL;

	mutex_lock(&vreg->lock);
	ret = rpm_reg_write(vreg, req, 0);
	if (!ret)
		vreg->is_enabled = 0;
	mutex_unlock(&vreg->lock);

	return ret;
}

static int rpm_reg_switch_disable(struct regulator_dev *rdev)
{
	struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
	const struct rpm_reg_parts *parts = vreg->parts;
	const struct request_member *req = &parts->enable_state;
	int ret;

	if (req->mask == 0)
		return -EINVAL;

	mutex_lock(&vreg->lock);
	ret = rpm_reg_write(vreg, req, 0);
	if (!ret)
		vreg->is_enabled = 0;
	mutex_unlock(&vreg->lock);

	return ret;
}

static int rpm_reg_is_enabled(struct regulator_dev *rdev)
{
	struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);

	return vreg->is_enabled;
}

static int rpm_reg_set_load(struct regulator_dev *rdev, int load_uA)
{
	struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
	const struct rpm_reg_parts *parts = vreg->parts;
	const struct request_member *req = &parts->ia;
	int load_mA = load_uA / 1000;
	int max_mA = req->mask >> req->shift;
	int ret;

	if (req->mask == 0)
		return -EINVAL;

	if (load_mA > max_mA)
		load_mA = max_mA;

	mutex_lock(&vreg->lock);
	ret = rpm_reg_write(vreg, req, load_mA);
	mutex_unlock(&vreg->lock);

	return ret;
}

static const struct regulator_ops uV_ops = {
	.list_voltage = regulator_list_voltage_linear_range,

	.set_voltage_sel = rpm_reg_set_uV_sel,
	.get_voltage = rpm_reg_get_voltage,

	.enable = rpm_reg_uV_enable,
	.disable = rpm_reg_uV_disable,
	.is_enabled = rpm_reg_is_enabled,

	.set_load = rpm_reg_set_load,
};

static const struct regulator_ops mV_ops = {
	.list_voltage = regulator_list_voltage_linear_range,

	.set_voltage_sel = rpm_reg_set_mV_sel,
	.get_voltage = rpm_reg_get_voltage,

	.enable = rpm_reg_mV_enable,
	.disable = rpm_reg_mV_disable,
	.is_enabled = rpm_reg_is_enabled,

	.set_load = rpm_reg_set_load,
};

static const struct regulator_ops switch_ops = {
	.enable = rpm_reg_switch_enable,
	.disable = rpm_reg_switch_disable,
	.is_enabled = rpm_reg_is_enabled,
};

/*
 * PM8018 regulators
 */
static const struct qcom_rpm_reg pm8018_pldo = {
	.desc.linear_ranges = pldo_ranges,
	.desc.n_linear_ranges = ARRAY_SIZE(pldo_ranges),
	.desc.n_voltages = 161,
	.desc.ops = &uV_ops,
	.parts = &rpm8960_ldo_parts,
	.supports_force_mode_auto = false,
	.supports_force_mode_bypass = false,
};

static const struct qcom_rpm_reg pm8018_nldo = {
	.desc.linear_ranges = nldo_ranges,
	.desc.n_linear_ranges = ARRAY_SIZE(nldo_ranges),
	.desc.n_voltages = 64,
	.desc.ops = &uV_ops,
	.parts = &rpm8960_ldo_parts,
	.supports_force_mode_auto = false,
	.supports_force_mode_bypass = false,
};

static const struct qcom_rpm_reg pm8018_smps = {
	.desc.linear_ranges = smps_ranges,
	.desc.n_linear_ranges = ARRAY_SIZE(smps_ranges),
	.desc.n_voltages = 154,
	.desc.ops = &uV_ops,
	.parts = &rpm8960_smps_parts,
	.supports_force_mode_auto = false,
	.supports_force_mode_bypass = false,
};

static const struct qcom_rpm_reg pm8018_switch = {
	.desc.ops = &switch_ops,
	.parts = &rpm8960_switch_parts,
};

/*
 * PM8058 regulators
 */
static const struct qcom_rpm_reg pm8058_pldo = {
	.desc.linear_ranges = pldo_ranges,
	.desc.n_linear_ranges = ARRAY_SIZE(pldo_ranges),
	.desc.n_voltages = 161,
	.desc.ops = &mV_ops,
	.parts = &rpm8660_ldo_parts,
	.supports_force_mode_auto = false,
	.supports_force_mode_bypass = false,
};

static const struct qcom_rpm_reg pm8058_nldo = {
	.desc.linear_ranges = nldo_ranges,
	.desc.n_linear_ranges = ARRAY_SIZE(nldo_ranges),
	.desc.n_voltages = 64,
	.desc.ops = &mV_ops,
	.parts = &rpm8660_ldo_parts,
	.supports_force_mode_auto = false,
	.supports_force_mode_bypass = false,
};

static const struct qcom_rpm_reg pm8058_smps = {
	.desc.linear_ranges = smps_ranges,
	.desc.n_linear_ranges = ARRAY_SIZE(smps_ranges),
	.desc.n_voltages = 154,
	.desc.ops = &mV_ops,
	.parts = &rpm8660_smps_parts,
	.supports_force_mode_auto = false,
	.supports_force_mode_bypass = false,
};

static const struct qcom_rpm_reg pm8058_ncp = {
	.desc.linear_ranges = ncp_ranges,
	.desc.n_linear_ranges = ARRAY_SIZE(ncp_ranges),
	.desc.n_voltages = 32,
	.desc.ops = &mV_ops,
	.parts = &rpm8660_ncp_parts,
};

static const struct qcom_rpm_reg pm8058_switch = {
	.desc.ops = &switch_ops,
	.parts = &rpm8660_switch_parts,
};

/*
 * PM8901 regulators
 */
static const struct qcom_rpm_reg pm8901_pldo = {
	.desc.linear_ranges = pldo_ranges,
	.desc.n_linear_ranges = ARRAY_SIZE(pldo_ranges),
	.desc.n_voltages = 161,
	.desc.ops = &mV_ops,
	.parts = &rpm8660_ldo_parts,
	.supports_force_mode_auto = false,
	.supports_force_mode_bypass = true,
};

static const struct qcom_rpm_reg pm8901_nldo = {
	.desc.linear_ranges = nldo_ranges,
	.desc.n_linear_ranges = ARRAY_SIZE(nldo_ranges),
	.desc.n_voltages = 64,
	.desc.ops = &mV_ops,
	.parts = &rpm8660_ldo_parts,
	.supports_force_mode_auto = false,
	.supports_force_mode_bypass = true,
};

static const struct qcom_rpm_reg pm8901_ftsmps = {
	.desc.linear_ranges = ftsmps_ranges,
	.desc.n_linear_ranges = ARRAY_SIZE(ftsmps_ranges),
	.desc.n_voltages = 101,
	.desc.ops = &mV_ops,
	.parts = &rpm8660_smps_parts,
	.supports_force_mode_auto = true,
	.supports_force_mode_bypass = false,
};

static const struct qcom_rpm_reg pm8901_switch = {
	.desc.ops = &switch_ops,
	.parts = &rpm8660_switch_parts,
};

/*
 * PM8921 regulators
 */
static const struct qcom_rpm_reg pm8921_pldo = {
	.desc.linear_ranges = pldo_ranges,
	.desc.n_linear_ranges = ARRAY_SIZE(pldo_ranges),
	.desc.n_voltages = 161,
	.desc.ops = &uV_ops,
	.parts = &rpm8960_ldo_parts,
	.supports_force_mode_auto = false,
	.supports_force_mode_bypass = true,
};

static const struct qcom_rpm_reg pm8921_nldo = {
	.desc.linear_ranges = nldo_ranges,
	.desc.n_linear_ranges = ARRAY_SIZE(nldo_ranges),
	.desc.n_voltages = 64,
	.desc.ops = &uV_ops,
	.parts = &rpm8960_ldo_parts,
	.supports_force_mode_auto = false,
	.supports_force_mode_bypass = true,
};

static const struct qcom_rpm_reg pm8921_nldo1200 = {
	.desc.linear_ranges = nldo1200_ranges,
	.desc.n_linear_ranges = ARRAY_SIZE(nldo1200_ranges),
	.desc.n_voltages = 124,
	.desc.ops = &uV_ops,
	.parts = &rpm8960_ldo_parts,
	.supports_force_mode_auto = false,
	.supports_force_mode_bypass = true,
};

static const struct qcom_rpm_reg pm8921_smps = {
	.desc.linear_ranges = smps_ranges,
	.desc.n_linear_ranges = ARRAY_SIZE(smps_ranges),
	.desc.n_voltages = 154,
	.desc.ops = &uV_ops,
	.parts = &rpm8960_smps_parts,
	.supports_force_mode_auto = true,
	.supports_force_mode_bypass = false,
};

static const struct qcom_rpm_reg pm8921_ncp = {
	.desc.linear_ranges = ncp_ranges,
	.desc.n_linear_ranges = ARRAY_SIZE(ncp_ranges),
	.desc.n_voltages = 32,
	.desc.ops = &uV_ops,
	.parts = &rpm8960_ncp_parts,
};

static const struct qcom_rpm_reg pm8921_switch = {
	.desc.ops = &switch_ops,
	.parts = &rpm8960_switch_parts,
};

static const struct qcom_rpm_reg smb208_smps = {
	.desc.linear_ranges = smb208_ranges,
	.desc.n_linear_ranges = ARRAY_SIZE(smb208_ranges),
	.desc.n_voltages = 235,
	.desc.ops = &uV_ops,
	.parts = &rpm8960_smps_parts,
	.supports_force_mode_auto = false,
	.supports_force_mode_bypass = false,
};

static int rpm_reg_set(struct qcom_rpm_reg *vreg,
		       const struct request_member *req,
		       const int value)
{
	if (req->mask == 0 || (value << req->shift) & ~req->mask)
		return -EINVAL;

	vreg->val[req->word] &= ~req->mask;
	vreg->val[req->word] |= value << req->shift;

	return 0;
}

static int rpm_reg_of_parse_freq(struct device *dev,
				 struct device_node *node,
				 struct qcom_rpm_reg *vreg)
{
	static const int freq_table[] = {
		19200000, 9600000, 6400000, 4800000, 3840000, 3200000, 2740000,
		2400000, 2130000, 1920000, 1750000, 1600000, 1480000, 1370000,
		1280000, 1200000,

	};
	const char *key;
	u32 freq;
	int ret;
	int i;

	key = "qcom,switch-mode-frequency";
	ret = of_property_read_u32(node, key, &freq);
	if (ret) {
		dev_err(dev, "regulator requires %s property\n", key);
		return -EINVAL;
	}

	for (i = 0; i < ARRAY_SIZE(freq_table); i++) {
		if (freq == freq_table[i]) {
			rpm_reg_set(vreg, &vreg->parts->freq, i + 1);
			return 0;
		}
	}

	dev_err(dev, "invalid frequency %d\n", freq);
	return -EINVAL;
}

static int rpm_reg_of_parse(struct device_node *node,
			    const struct regulator_desc *desc,
			    struct regulator_config *config)
{
	struct qcom_rpm_reg *vreg = config->driver_data;
	struct device *dev = config->dev;
	const char *key;
	u32 force_mode;
	bool pwm;
	u32 val;
	int ret;

	key = "bias-pull-down";
	if (of_property_read_bool(node, key)) {
		ret = rpm_reg_set(vreg, &vreg->parts->pd, 1);
		if (ret) {
			dev_err(dev, "%s is invalid", key);
			return ret;
		}
	}

	if (vreg->parts->freq.mask) {
		ret = rpm_reg_of_parse_freq(dev, node, vreg);
		if (ret < 0)
			return ret;
	}

	if (vreg->parts->pm.mask) {
		key = "qcom,power-mode-hysteretic";
		pwm = !of_property_read_bool(node, key);

		ret = rpm_reg_set(vreg, &vreg->parts->pm, pwm);
		if (ret) {
			dev_err(dev, "failed to set power mode\n");
			return ret;
		}
	}

	if (vreg->parts->fm.mask) {
		force_mode = -1;

		key = "qcom,force-mode";
		ret = of_property_read_u32(node, key, &val);
		if (ret == -EINVAL) {
			val = QCOM_RPM_FORCE_MODE_NONE;
		} else if (ret < 0) {
			dev_err(dev, "failed to read %s\n", key);
			return ret;
		}

		/*
		 * If force-mode is encoded as 2 bits then the
		 * possible register values are:
		 * NONE, LPM, HPM
		 * otherwise:
		 * NONE, LPM, AUTO, HPM, BYPASS
		 */
		switch (val) {
		case QCOM_RPM_FORCE_MODE_NONE:
			force_mode = 0;
			break;
		case QCOM_RPM_FORCE_MODE_LPM:
			force_mode = 1;
			break;
		case QCOM_RPM_FORCE_MODE_HPM:
			if (FORCE_MODE_IS_2_BITS(vreg))
				force_mode = 2;
			else
				force_mode = 3;
			break;
		case QCOM_RPM_FORCE_MODE_AUTO:
			if (vreg->supports_force_mode_auto)
				force_mode = 2;
			break;
		case QCOM_RPM_FORCE_MODE_BYPASS:
			if (vreg->supports_force_mode_bypass)
				force_mode = 4;
			break;
		}

		if (force_mode == -1) {
			dev_err(dev, "invalid force mode\n");
			return -EINVAL;
		}

		ret = rpm_reg_set(vreg, &vreg->parts->fm, force_mode);
		if (ret) {
			dev_err(dev, "failed to set force mode\n");
			return ret;
		}
	}

	return 0;
}

struct rpm_regulator_data {
	const char *name;
	int resource;
	const struct qcom_rpm_reg *template;
	const char *supply;
};

static const struct rpm_regulator_data rpm_pm8018_regulators[] = {
	{ "s1",  QCOM_RPM_PM8018_SMPS1, &pm8018_smps, "vdd_s1" },
	{ "s2",  QCOM_RPM_PM8018_SMPS2, &pm8018_smps, "vdd_s2" },
	{ "s3",  QCOM_RPM_PM8018_SMPS3, &pm8018_smps, "vdd_s3" },
	{ "s4",  QCOM_RPM_PM8018_SMPS4, &pm8018_smps, "vdd_s4" },
	{ "s5",  QCOM_RPM_PM8018_SMPS5, &pm8018_smps, "vdd_s5" },

	{ "l2",  QCOM_RPM_PM8018_LDO2,  &pm8018_pldo, "vdd_l2" },
	{ "l3",  QCOM_RPM_PM8018_LDO3,  &pm8018_pldo, "vdd_l3" },
	{ "l4",  QCOM_RPM_PM8018_LDO4,  &pm8018_pldo, "vdd_l4" },
	{ "l5",  QCOM_RPM_PM8018_LDO5,  &pm8018_pldo, "vdd_l5" },
	{ "l6",  QCOM_RPM_PM8018_LDO6,  &pm8018_pldo, "vdd_l7" },
	{ "l7",  QCOM_RPM_PM8018_LDO7,  &pm8018_pldo, "vdd_l7" },
	{ "l8",  QCOM_RPM_PM8018_LDO8,  &pm8018_nldo, "vdd_l8" },
	{ "l9",  QCOM_RPM_PM8018_LDO9,  &pm8921_nldo1200,
						      "vdd_l9_l10_l11_l12" },
	{ "l10", QCOM_RPM_PM8018_LDO10, &pm8018_nldo, "vdd_l9_l10_l11_l12" },
	{ "l11", QCOM_RPM_PM8018_LDO11, &pm8018_nldo, "vdd_l9_l10_l11_l12" },
	{ "l12", QCOM_RPM_PM8018_LDO12, &pm8018_nldo, "vdd_l9_l10_l11_l12" },
	{ "l14", QCOM_RPM_PM8018_LDO14, &pm8018_pldo, "vdd_l14" },

	{ "lvs1", QCOM_RPM_PM8018_LVS1, &pm8018_switch, "lvs1_in" },

	{ }
};

static const struct rpm_regulator_data rpm_pm8058_regulators[] = {
	{ "s0",   QCOM_RPM_PM8058_SMPS0,  &pm8058_smps, "vdd_s0" },
	{ "s1",   QCOM_RPM_PM8058_SMPS1,  &pm8058_smps, "vdd_s1" },
	{ "s2",   QCOM_RPM_PM8058_SMPS2,  &pm8058_smps, "vdd_s2" },
	{ "s3",   QCOM_RPM_PM8058_SMPS3,  &pm8058_smps, "vdd_s3" },
	{ "s4",   QCOM_RPM_PM8058_SMPS4,  &pm8058_smps, "vdd_s4" },

	{ "l0",   QCOM_RPM_PM8058_LDO0,   &pm8058_nldo, "vdd_l0_l1_lvs"	},
	{ "l1",   QCOM_RPM_PM8058_LDO1,   &pm8058_nldo, "vdd_l0_l1_lvs" },
	{ "l2",   QCOM_RPM_PM8058_LDO2,   &pm8058_pldo, "vdd_l2_l11_l12" },
	{ "l3",   QCOM_RPM_PM8058_LDO3,   &pm8058_pldo, "vdd_l3_l4_l5" },
	{ "l4",   QCOM_RPM_PM8058_LDO4,   &pm8058_pldo, "vdd_l3_l4_l5" },
	{ "l5",   QCOM_RPM_PM8058_LDO5,   &pm8058_pldo, "vdd_l3_l4_l5" },
	{ "l6",   QCOM_RPM_PM8058_LDO6,   &pm8058_pldo, "vdd_l6_l7" },
	{ "l7",   QCOM_RPM_PM8058_LDO7,   &pm8058_pldo, "vdd_l6_l7" },
	{ "l8",   QCOM_RPM_PM8058_LDO8,   &pm8058_pldo, "vdd_l8" },
	{ "l9",   QCOM_RPM_PM8058_LDO9,   &pm8058_pldo, "vdd_l9" },
	{ "l10",  QCOM_RPM_PM8058_LDO10,  &pm8058_pldo, "vdd_l10" },
	{ "l11",  QCOM_RPM_PM8058_LDO11,  &pm8058_pldo, "vdd_l2_l11_l12" },
	{ "l12",  QCOM_RPM_PM8058_LDO12,  &pm8058_pldo, "vdd_l2_l11_l12" },
	{ "l13",  QCOM_RPM_PM8058_LDO13,  &pm8058_pldo, "vdd_l13_l16" },
	{ "l14",  QCOM_RPM_PM8058_LDO14,  &pm8058_pldo, "vdd_l14_l15" },
	{ "l15",  QCOM_RPM_PM8058_LDO15,  &pm8058_pldo, "vdd_l14_l15" },
	{ "l16",  QCOM_RPM_PM8058_LDO16,  &pm8058_pldo, "vdd_l13_l16" },
	{ "l17",  QCOM_RPM_PM8058_LDO17,  &pm8058_pldo, "vdd_l17_l18" },
	{ "l18",  QCOM_RPM_PM8058_LDO18,  &pm8058_pldo, "vdd_l17_l18" },
	{ "l19",  QCOM_RPM_PM8058_LDO19,  &pm8058_pldo, "vdd_l19_l20" },
	{ "l20",  QCOM_RPM_PM8058_LDO20,  &pm8058_pldo, "vdd_l19_l20" },
	{ "l21",  QCOM_RPM_PM8058_LDO21,  &pm8058_nldo, "vdd_l21" },
	{ "l22",  QCOM_RPM_PM8058_LDO22,  &pm8058_nldo, "vdd_l22" },
	{ "l23",  QCOM_RPM_PM8058_LDO23,  &pm8058_nldo, "vdd_l23_l24_l25" },
	{ "l24",  QCOM_RPM_PM8058_LDO24,  &pm8058_nldo, "vdd_l23_l24_l25" },
	{ "l25",  QCOM_RPM_PM8058_LDO25,  &pm8058_nldo, "vdd_l23_l24_l25" },

	{ "lvs0", QCOM_RPM_PM8058_LVS0, &pm8058_switch, "vdd_l0_l1_lvs" },
	{ "lvs1", QCOM_RPM_PM8058_LVS1, &pm8058_switch, "vdd_l0_l1_lvs" },

	{ "ncp",  QCOM_RPM_PM8058_NCP, &pm8058_ncp, "vdd_ncp" },
	{ }
};

static const struct rpm_regulator_data rpm_pm8901_regulators[] = {
	{ "s0",   QCOM_RPM_PM8901_SMPS0, &pm8901_ftsmps, "vdd_s0" },
	{ "s1",   QCOM_RPM_PM8901_SMPS1, &pm8901_ftsmps, "vdd_s1" },
	{ "s2",   QCOM_RPM_PM8901_SMPS2, &pm8901_ftsmps, "vdd_s2" },
	{ "s3",   QCOM_RPM_PM8901_SMPS3, &pm8901_ftsmps, "vdd_s3" },
	{ "s4",   QCOM_RPM_PM8901_SMPS4, &pm8901_ftsmps, "vdd_s4" },

	{ "l0",   QCOM_RPM_PM8901_LDO0, &pm8901_nldo, "vdd_l0" },
	{ "l1",   QCOM_RPM_PM8901_LDO1, &pm8901_pldo, "vdd_l1" },
	{ "l2",   QCOM_RPM_PM8901_LDO2, &pm8901_pldo, "vdd_l2" },
	{ "l3",   QCOM_RPM_PM8901_LDO3, &pm8901_pldo, "vdd_l3" },
	{ "l4",   QCOM_RPM_PM8901_LDO4, &pm8901_pldo, "vdd_l4" },
	{ "l5",   QCOM_RPM_PM8901_LDO5, &pm8901_pldo, "vdd_l5" },
	{ "l6",   QCOM_RPM_PM8901_LDO6, &pm8901_pldo, "vdd_l6" },

	{ "lvs0", QCOM_RPM_PM8901_LVS0, &pm8901_switch, "lvs0_in" },
	{ "lvs1", QCOM_RPM_PM8901_LVS1, &pm8901_switch, "lvs1_in" },
	{ "lvs2", QCOM_RPM_PM8901_LVS2, &pm8901_switch, "lvs2_in" },
	{ "lvs3", QCOM_RPM_PM8901_LVS3, &pm8901_switch, "lvs3_in" },

	{ "mvs", QCOM_RPM_PM8901_MVS, &pm8901_switch, "mvs_in" },
	{ }
};

static const struct rpm_regulator_data rpm_pm8921_regulators[] = {
	{ "s1",  QCOM_RPM_PM8921_SMPS1, &pm8921_smps, "vdd_s1" },
	{ "s2",  QCOM_RPM_PM8921_SMPS2, &pm8921_smps, "vdd_s2" },
	{ "s3",  QCOM_RPM_PM8921_SMPS3, &pm8921_smps },
	{ "s4",  QCOM_RPM_PM8921_SMPS4, &pm8921_smps, "vdd_s4" },
	{ "s7",  QCOM_RPM_PM8921_SMPS7, &pm8921_smps, "vdd_s7" },
	{ "s8",  QCOM_RPM_PM8921_SMPS8, &pm8921_smps, "vdd_s8"  },

	{ "l1",  QCOM_RPM_PM8921_LDO1, &pm8921_nldo, "vdd_l1_l2_l12_l18" },
	{ "l2",  QCOM_RPM_PM8921_LDO2, &pm8921_nldo, "vdd_l1_l2_l12_l18" },
	{ "l3",  QCOM_RPM_PM8921_LDO3, &pm8921_pldo, "vdd_l3_l15_l17" },
	{ "l4",  QCOM_RPM_PM8921_LDO4, &pm8921_pldo, "vdd_l4_l14" },
	{ "l5",  QCOM_RPM_PM8921_LDO5, &pm8921_pldo, "vdd_l5_l8_l16" },
	{ "l6",  QCOM_RPM_PM8921_LDO6, &pm8921_pldo, "vdd_l6_l7" },
	{ "l7",  QCOM_RPM_PM8921_LDO7, &pm8921_pldo, "vdd_l6_l7" },
	{ "l8",  QCOM_RPM_PM8921_LDO8, &pm8921_pldo, "vdd_l5_l8_l16" },
	{ "l9",  QCOM_RPM_PM8921_LDO9, &pm8921_pldo, "vdd_l9_l11" },
	{ "l10", QCOM_RPM_PM8921_LDO10, &pm8921_pldo, "vdd_l10_l22" },
	{ "l11", QCOM_RPM_PM8921_LDO11, &pm8921_pldo, "vdd_l9_l11" },
	{ "l12", QCOM_RPM_PM8921_LDO12, &pm8921_nldo, "vdd_l1_l2_l12_l18" },
	{ "l14", QCOM_RPM_PM8921_LDO14, &pm8921_pldo, "vdd_l4_l14" },
	{ "l15", QCOM_RPM_PM8921_LDO15, &pm8921_pldo, "vdd_l3_l15_l17" },
	{ "l16", QCOM_RPM_PM8921_LDO16, &pm8921_pldo, "vdd_l5_l8_l16" },
	{ "l17", QCOM_RPM_PM8921_LDO17, &pm8921_pldo, "vdd_l3_l15_l17" },
	{ "l18", QCOM_RPM_PM8921_LDO18, &pm8921_nldo, "vdd_l1_l2_l12_l18" },
	{ "l21", QCOM_RPM_PM8921_LDO21, &pm8921_pldo, "vdd_l21_l23_l29" },
	{ "l22", QCOM_RPM_PM8921_LDO22, &pm8921_pldo, "vdd_l10_l22" },
	{ "l23", QCOM_RPM_PM8921_LDO23, &pm8921_pldo, "vdd_l21_l23_l29" },
	{ "l24", QCOM_RPM_PM8921_LDO24, &pm8921_nldo1200, "vdd_l24" },
	{ "l25", QCOM_RPM_PM8921_LDO25, &pm8921_nldo1200, "vdd_l25" },
	{ "l26", QCOM_RPM_PM8921_LDO26, &pm8921_nldo1200, "vdd_l26" },
	{ "l27", QCOM_RPM_PM8921_LDO27, &pm8921_nldo1200, "vdd_l27" },
	{ "l28", QCOM_RPM_PM8921_LDO28, &pm8921_nldo1200, "vdd_l28" },
	{ "l29", QCOM_RPM_PM8921_LDO29, &pm8921_pldo, "vdd_l21_l23_l29" },

	{ "lvs1", QCOM_RPM_PM8921_LVS1, &pm8921_switch, "vin_lvs1_3_6" },
	{ "lvs2", QCOM_RPM_PM8921_LVS2, &pm8921_switch, "vin_lvs2" },
	{ "lvs3", QCOM_RPM_PM8921_LVS3, &pm8921_switch, "vin_lvs1_3_6" },
	{ "lvs4", QCOM_RPM_PM8921_LVS4, &pm8921_switch, "vin_lvs4_5_7" },
	{ "lvs5", QCOM_RPM_PM8921_LVS5, &pm8921_switch, "vin_lvs4_5_7" },
	{ "lvs6", QCOM_RPM_PM8921_LVS6, &pm8921_switch, "vin_lvs1_3_6" },
	{ "lvs7", QCOM_RPM_PM8921_LVS7, &pm8921_switch, "vin_lvs4_5_7" },

	{ "usb-switch", QCOM_RPM_USB_OTG_SWITCH, &pm8921_switch, "vin_5vs" },
	{ "hdmi-switch", QCOM_RPM_HDMI_SWITCH, &pm8921_switch, "vin_5vs" },
	{ "ncp", QCOM_RPM_PM8921_NCP, &pm8921_ncp, "vdd_ncp" },
	{ }
};

static const struct rpm_regulator_data rpm_smb208_regulators[] = {
	{ "s1a",  QCOM_RPM_SMB208_S1a, &smb208_smps, "vin_s1a" },
	{ "s1b",  QCOM_RPM_SMB208_S1b, &smb208_smps, "vin_s1b" },
	{ "s2a",  QCOM_RPM_SMB208_S2a, &smb208_smps, "vin_s2a" },
	{ "s2b",  QCOM_RPM_SMB208_S2b, &smb208_smps, "vin_s2b" },
	{ }
};

static const struct of_device_id rpm_of_match[] = {
	{ .compatible = "qcom,rpm-pm8018-regulators",
		.data = &rpm_pm8018_regulators },
	{ .compatible = "qcom,rpm-pm8058-regulators", .data = &rpm_pm8058_regulators },
	{ .compatible = "qcom,rpm-pm8901-regulators", .data = &rpm_pm8901_regulators },
	{ .compatible = "qcom,rpm-pm8921-regulators", .data = &rpm_pm8921_regulators },
	{ .compatible = "qcom,rpm-smb208-regulators", .data = &rpm_smb208_regulators },
	{ }
};
MODULE_DEVICE_TABLE(of, rpm_of_match);

static int rpm_reg_probe(struct platform_device *pdev)
{
	const struct rpm_regulator_data *reg;
	const struct of_device_id *match;
	struct regulator_config config = { };
	struct regulator_dev *rdev;
	struct qcom_rpm_reg *vreg;
	struct qcom_rpm *rpm;

	rpm = dev_get_drvdata(pdev->dev.parent);
	if (!rpm) {
		dev_err(&pdev->dev, "unable to retrieve handle to rpm\n");
		return -ENODEV;
	}

	match = of_match_device(rpm_of_match, &pdev->dev);
	if (!match) {
		dev_err(&pdev->dev, "failed to match device\n");
		return -ENODEV;
	}

	for (reg = match->data; reg->name; reg++) {
		vreg = devm_kmalloc(&pdev->dev, sizeof(*vreg), GFP_KERNEL);
		if (!vreg)
			return -ENOMEM;

		memcpy(vreg, reg->template, sizeof(*vreg));
		mutex_init(&vreg->lock);

		vreg->dev = &pdev->dev;
		vreg->resource = reg->resource;
		vreg->rpm = rpm;

		vreg->desc.id = -1;
		vreg->desc.owner = THIS_MODULE;
		vreg->desc.type = REGULATOR_VOLTAGE;
		vreg->desc.name = reg->name;
		vreg->desc.supply_name = reg->supply;
		vreg->desc.of_match = reg->name;
		vreg->desc.of_parse_cb = rpm_reg_of_parse;

		config.dev = &pdev->dev;
		config.driver_data = vreg;
		rdev = devm_regulator_register(&pdev->dev, &vreg->desc, &config);
		if (IS_ERR(rdev)) {
			dev_err(&pdev->dev, "failed to register %s\n", reg->name);
			return PTR_ERR(rdev);
		}
	}

	return 0;
}

static struct platform_driver rpm_reg_driver = {
	.probe          = rpm_reg_probe,
	.driver  = {
		.name  = "qcom_rpm_reg",
		.of_match_table = of_match_ptr(rpm_of_match),
	},
};

static int __init rpm_reg_init(void)
{
	return platform_driver_register(&rpm_reg_driver);
}
subsys_initcall(rpm_reg_init);

static void __exit rpm_reg_exit(void)
{
	platform_driver_unregister(&rpm_reg_driver);
}
module_exit(rpm_reg_exit)

MODULE_DESCRIPTION("Qualcomm RPM regulator driver");
MODULE_LICENSE("GPL v2");