summaryrefslogtreecommitdiff
path: root/drivers/regulator/tps6594-regulator.c
blob: ac53792e3fedee4400b283ab17239d8ec12ca024 (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
// SPDX-License-Identifier: GPL-2.0
//
// Regulator driver for tps6594 PMIC
//
// Copyright (C) 2023 BayLibre Incorporated - https://www.baylibre.com/

#include <linux/device.h>
#include <linux/err.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/of_regulator.h>

#include <linux/mfd/tps6594.h>

#define BUCK_NB			5
#define LDO_NB			4
#define MULTI_PHASE_NB		4
/* TPS6593 and LP8764 supports OV, UV, SC, ILIM */
#define REGS_INT_NB		4
/* TPS65224 supports OV or UV */
#define TPS65224_REGS_INT_NB	1

enum tps6594_regulator_id {
	/* DCDC's */
	TPS6594_BUCK_1,
	TPS6594_BUCK_2,
	TPS6594_BUCK_3,
	TPS6594_BUCK_4,
	TPS6594_BUCK_5,

	/* LDOs */
	TPS6594_LDO_1,
	TPS6594_LDO_2,
	TPS6594_LDO_3,
	TPS6594_LDO_4,
};

enum tps6594_multi_regulator_id {
	/* Multi-phase DCDC's */
	TPS6594_BUCK_12,
	TPS6594_BUCK_34,
	TPS6594_BUCK_123,
	TPS6594_BUCK_1234,
};

struct tps6594_regulator_irq_type {
	const char *irq_name;
	const char *regulator_name;
	const char *event_name;
	unsigned long event;
};

static struct tps6594_regulator_irq_type tps6594_ext_regulator_irq_types[] = {
	{ TPS6594_IRQ_NAME_VCCA_OV, "VCCA", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ TPS6594_IRQ_NAME_VCCA_UV, "VCCA", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
	{ TPS6594_IRQ_NAME_VMON1_OV, "VMON1", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ TPS6594_IRQ_NAME_VMON1_UV, "VMON1", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
	{ TPS6594_IRQ_NAME_VMON1_RV, "VMON1", "residual voltage",
	  REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ TPS6594_IRQ_NAME_VMON2_OV, "VMON2", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ TPS6594_IRQ_NAME_VMON2_UV, "VMON2", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
	{ TPS6594_IRQ_NAME_VMON2_RV, "VMON2", "residual voltage",
	  REGULATOR_EVENT_OVER_VOLTAGE_WARN },
};

static struct tps6594_regulator_irq_type tps65224_ext_regulator_irq_types[] = {
	{ TPS65224_IRQ_NAME_VCCA_UVOV, "VCCA", "voltage out of range",
	  REGULATOR_EVENT_REGULATION_OUT },
	{ TPS65224_IRQ_NAME_VMON1_UVOV, "VMON1", "voltage out of range",
	  REGULATOR_EVENT_REGULATION_OUT },
	{ TPS65224_IRQ_NAME_VMON2_UVOV, "VMON2", "voltage out of range",
	  REGULATOR_EVENT_REGULATION_OUT },
};

struct tps6594_regulator_irq_data {
	struct device *dev;
	struct tps6594_regulator_irq_type *type;
	struct regulator_dev *rdev;
};

struct tps6594_ext_regulator_irq_data {
	struct device *dev;
	struct tps6594_regulator_irq_type *type;
};

#define TPS6594_REGULATOR(_name, _of, _id, _type, _ops, _n, _vr, _vm, _er, \
			   _em, _cr, _cm, _lr, _nlr, _delay, _fuv, \
			   _ct, _ncl, _bpm) \
	{								\
		.name			= _name,			\
		.of_match		= _of,				\
		.regulators_node	= of_match_ptr("regulators"),	\
		.supply_name		= _of,				\
		.id			= _id,				\
		.ops			= &(_ops),			\
		.n_voltages		= _n,				\
		.type			= _type,			\
		.owner			= THIS_MODULE,			\
		.vsel_reg		= _vr,				\
		.vsel_mask		= _vm,				\
		.csel_reg		= _cr,				\
		.csel_mask		= _cm,				\
		.curr_table		= _ct,				\
		.n_current_limits	= _ncl,				\
		.enable_reg		= _er,				\
		.enable_mask		= _em,				\
		.volt_table		= NULL,				\
		.linear_ranges		= _lr,				\
		.n_linear_ranges	= _nlr,				\
		.ramp_delay		= _delay,			\
		.fixed_uV		= _fuv,				\
		.bypass_reg		= _vr,				\
		.bypass_mask		= _bpm,				\
	}								\

static const struct linear_range bucks_ranges[] = {
	REGULATOR_LINEAR_RANGE(300000, 0x0, 0xe, 20000),
	REGULATOR_LINEAR_RANGE(600000, 0xf, 0x72, 5000),
	REGULATOR_LINEAR_RANGE(1100000, 0x73, 0xaa, 10000),
	REGULATOR_LINEAR_RANGE(1660000, 0xab, 0xff, 20000),
};

static const struct linear_range ldos_1_2_3_ranges[] = {
	REGULATOR_LINEAR_RANGE(600000, 0x4, 0x3a, 50000),
};

static const struct linear_range ldos_4_ranges[] = {
	REGULATOR_LINEAR_RANGE(1200000, 0x20, 0x74, 25000),
};

/* Voltage range for TPS65224 Bucks and LDOs */
static const struct linear_range tps65224_bucks_1_ranges[] = {
	REGULATOR_LINEAR_RANGE(500000, 0x0a, 0x0e, 20000),
	REGULATOR_LINEAR_RANGE(600000, 0x0f, 0x72, 5000),
	REGULATOR_LINEAR_RANGE(1100000, 0x73, 0xaa, 10000),
	REGULATOR_LINEAR_RANGE(1660000, 0xab, 0xfd, 20000),
};

static const struct linear_range tps65224_bucks_2_3_4_ranges[] = {
	REGULATOR_LINEAR_RANGE(500000, 0x0, 0x1a, 25000),
	REGULATOR_LINEAR_RANGE(1200000, 0x1b, 0x45, 50000),
};

static const struct linear_range tps65224_ldos_1_ranges[] = {
	REGULATOR_LINEAR_RANGE(1200000, 0xC, 0x36, 50000),
};

static const struct linear_range tps65224_ldos_2_3_ranges[] = {
	REGULATOR_LINEAR_RANGE(600000, 0x0, 0x38, 50000),
};

/* Operations permitted on BUCK1/2/3/4/5 */
static const struct regulator_ops tps6594_bucks_ops = {
	.is_enabled		= regulator_is_enabled_regmap,
	.enable			= regulator_enable_regmap,
	.disable		= regulator_disable_regmap,
	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
	.list_voltage		= regulator_list_voltage_linear_range,
	.map_voltage		= regulator_map_voltage_linear_range,
	.set_voltage_time_sel	= regulator_set_voltage_time_sel,

};

/* Operations permitted on LDO1/2/3 */
static const struct regulator_ops tps6594_ldos_1_2_3_ops = {
	.is_enabled		= regulator_is_enabled_regmap,
	.enable			= regulator_enable_regmap,
	.disable		= regulator_disable_regmap,
	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
	.list_voltage		= regulator_list_voltage_linear_range,
	.map_voltage		= regulator_map_voltage_linear_range,
	.set_bypass		= regulator_set_bypass_regmap,
	.get_bypass		= regulator_get_bypass_regmap,
};

/* Operations permitted on LDO4 */
static const struct regulator_ops tps6594_ldos_4_ops = {
	.is_enabled		= regulator_is_enabled_regmap,
	.enable			= regulator_enable_regmap,
	.disable		= regulator_disable_regmap,
	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
	.list_voltage		= regulator_list_voltage_linear_range,
	.map_voltage		= regulator_map_voltage_linear_range,
};

static const struct regulator_desc buck_regs[] = {
	TPS6594_REGULATOR("BUCK1", "buck1", TPS6594_BUCK_1,
			  REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
			  TPS6594_REG_BUCKX_VOUT_1(0),
			  TPS6594_MASK_BUCKS_VSET,
			  TPS6594_REG_BUCKX_CTRL(0),
			  TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
			  4, 0, 0, NULL, 0, 0),
	TPS6594_REGULATOR("BUCK2", "buck2", TPS6594_BUCK_2,
			  REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
			  TPS6594_REG_BUCKX_VOUT_1(1),
			  TPS6594_MASK_BUCKS_VSET,
			  TPS6594_REG_BUCKX_CTRL(1),
			  TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
			  4, 0, 0, NULL, 0, 0),
	TPS6594_REGULATOR("BUCK3", "buck3", TPS6594_BUCK_3,
			  REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
			  TPS6594_REG_BUCKX_VOUT_1(2),
			  TPS6594_MASK_BUCKS_VSET,
			  TPS6594_REG_BUCKX_CTRL(2),
			  TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
			  4, 0, 0, NULL, 0, 0),
	TPS6594_REGULATOR("BUCK4", "buck4", TPS6594_BUCK_4,
			  REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
			  TPS6594_REG_BUCKX_VOUT_1(3),
			  TPS6594_MASK_BUCKS_VSET,
			  TPS6594_REG_BUCKX_CTRL(3),
			  TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
			  4, 0, 0, NULL, 0, 0),
	TPS6594_REGULATOR("BUCK5", "buck5", TPS6594_BUCK_5,
			  REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
			  TPS6594_REG_BUCKX_VOUT_1(4),
			  TPS6594_MASK_BUCKS_VSET,
			  TPS6594_REG_BUCKX_CTRL(4),
			  TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
			  4, 0, 0, NULL, 0, 0),
};

/* Buck configuration for TPS65224 */
static const struct regulator_desc tps65224_buck_regs[] = {
	TPS6594_REGULATOR("BUCK1", "buck1", TPS6594_BUCK_1,
			  REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS65224_MASK_BUCK1_VSET,
			  TPS6594_REG_BUCKX_VOUT_1(0),
			  TPS65224_MASK_BUCK1_VSET,
			  TPS6594_REG_BUCKX_CTRL(0),
			  TPS6594_BIT_BUCK_EN, 0, 0, tps65224_bucks_1_ranges,
			  4, 0, 0, NULL, 0, 0),
	TPS6594_REGULATOR("BUCK2", "buck2", TPS6594_BUCK_2,
			  REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS65224_MASK_BUCKS_VSET,
			  TPS6594_REG_BUCKX_VOUT_1(1),
			  TPS65224_MASK_BUCKS_VSET,
			  TPS6594_REG_BUCKX_CTRL(1),
			  TPS6594_BIT_BUCK_EN, 0, 0, tps65224_bucks_2_3_4_ranges,
			  4, 0, 0, NULL, 0, 0),
	TPS6594_REGULATOR("BUCK3", "buck3", TPS6594_BUCK_3,
			  REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS65224_MASK_BUCKS_VSET,
			  TPS6594_REG_BUCKX_VOUT_1(2),
			  TPS65224_MASK_BUCKS_VSET,
			  TPS6594_REG_BUCKX_CTRL(2),
			  TPS6594_BIT_BUCK_EN, 0, 0, tps65224_bucks_2_3_4_ranges,
			  4, 0, 0, NULL, 0, 0),
	TPS6594_REGULATOR("BUCK4", "buck4", TPS6594_BUCK_4,
			  REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS65224_MASK_BUCKS_VSET,
			  TPS6594_REG_BUCKX_VOUT_1(3),
			  TPS65224_MASK_BUCKS_VSET,
			  TPS6594_REG_BUCKX_CTRL(3),
			  TPS6594_BIT_BUCK_EN, 0, 0, tps65224_bucks_2_3_4_ranges,
			  4, 0, 0, NULL, 0, 0),
};

static struct tps6594_regulator_irq_type tps6594_buck1_irq_types[] = {
	{ TPS6594_IRQ_NAME_BUCK1_OV, "BUCK1", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ TPS6594_IRQ_NAME_BUCK1_UV, "BUCK1", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
	{ TPS6594_IRQ_NAME_BUCK1_SC, "BUCK1", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
	{ TPS6594_IRQ_NAME_BUCK1_ILIM, "BUCK1", "reach ilim, overcurrent",
	  REGULATOR_EVENT_OVER_CURRENT },
};

static struct tps6594_regulator_irq_type tps6594_buck2_irq_types[] = {
	{ TPS6594_IRQ_NAME_BUCK2_OV, "BUCK2", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ TPS6594_IRQ_NAME_BUCK2_UV, "BUCK2", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
	{ TPS6594_IRQ_NAME_BUCK2_SC, "BUCK2", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
	{ TPS6594_IRQ_NAME_BUCK2_ILIM, "BUCK2", "reach ilim, overcurrent",
	  REGULATOR_EVENT_OVER_CURRENT },
};

static struct tps6594_regulator_irq_type tps6594_buck3_irq_types[] = {
	{ TPS6594_IRQ_NAME_BUCK3_OV, "BUCK3", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ TPS6594_IRQ_NAME_BUCK3_UV, "BUCK3", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
	{ TPS6594_IRQ_NAME_BUCK3_SC, "BUCK3", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
	{ TPS6594_IRQ_NAME_BUCK3_ILIM, "BUCK3", "reach ilim, overcurrent",
	  REGULATOR_EVENT_OVER_CURRENT },
};

static struct tps6594_regulator_irq_type tps6594_buck4_irq_types[] = {
	{ TPS6594_IRQ_NAME_BUCK4_OV, "BUCK4", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ TPS6594_IRQ_NAME_BUCK4_UV, "BUCK4", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
	{ TPS6594_IRQ_NAME_BUCK4_SC, "BUCK4", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
	{ TPS6594_IRQ_NAME_BUCK4_ILIM, "BUCK4", "reach ilim, overcurrent",
	  REGULATOR_EVENT_OVER_CURRENT },
};

static struct tps6594_regulator_irq_type tps6594_buck5_irq_types[] = {
	{ TPS6594_IRQ_NAME_BUCK5_OV, "BUCK5", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ TPS6594_IRQ_NAME_BUCK5_UV, "BUCK5", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
	{ TPS6594_IRQ_NAME_BUCK5_SC, "BUCK5", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
	{ TPS6594_IRQ_NAME_BUCK5_ILIM, "BUCK5", "reach ilim, overcurrent",
	  REGULATOR_EVENT_OVER_CURRENT },
};

static struct tps6594_regulator_irq_type tps6594_ldo1_irq_types[] = {
	{ TPS6594_IRQ_NAME_LDO1_OV, "LDO1", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ TPS6594_IRQ_NAME_LDO1_UV, "LDO1", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
	{ TPS6594_IRQ_NAME_LDO1_SC, "LDO1", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
	{ TPS6594_IRQ_NAME_LDO1_ILIM, "LDO1", "reach ilim, overcurrent",
	  REGULATOR_EVENT_OVER_CURRENT },
};

static struct tps6594_regulator_irq_type tps6594_ldo2_irq_types[] = {
	{ TPS6594_IRQ_NAME_LDO2_OV, "LDO2", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ TPS6594_IRQ_NAME_LDO2_UV, "LDO2", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
	{ TPS6594_IRQ_NAME_LDO2_SC, "LDO2", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
	{ TPS6594_IRQ_NAME_LDO2_ILIM, "LDO2", "reach ilim, overcurrent",
	  REGULATOR_EVENT_OVER_CURRENT },
};

static struct tps6594_regulator_irq_type tps6594_ldo3_irq_types[] = {
	{ TPS6594_IRQ_NAME_LDO3_OV, "LDO3", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ TPS6594_IRQ_NAME_LDO3_UV, "LDO3", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
	{ TPS6594_IRQ_NAME_LDO3_SC, "LDO3", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
	{ TPS6594_IRQ_NAME_LDO3_ILIM, "LDO3", "reach ilim, overcurrent",
	  REGULATOR_EVENT_OVER_CURRENT },
};

static struct tps6594_regulator_irq_type tps6594_ldo4_irq_types[] = {
	{ TPS6594_IRQ_NAME_LDO4_OV, "LDO4", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
	{ TPS6594_IRQ_NAME_LDO4_UV, "LDO4", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
	{ TPS6594_IRQ_NAME_LDO4_SC, "LDO4", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
	{ TPS6594_IRQ_NAME_LDO4_ILIM, "LDO4", "reach ilim, overcurrent",
	  REGULATOR_EVENT_OVER_CURRENT },
};

static struct tps6594_regulator_irq_type tps65224_buck1_irq_types[] = {
	{ TPS65224_IRQ_NAME_BUCK1_UVOV, "BUCK1", "voltage out of range",
	  REGULATOR_EVENT_REGULATION_OUT },
};

static struct tps6594_regulator_irq_type tps65224_buck2_irq_types[] = {
	{ TPS65224_IRQ_NAME_BUCK2_UVOV, "BUCK2", "voltage out of range",
	  REGULATOR_EVENT_REGULATION_OUT },
};

static struct tps6594_regulator_irq_type tps65224_buck3_irq_types[] = {
	{ TPS65224_IRQ_NAME_BUCK3_UVOV, "BUCK3", "voltage out of range",
	  REGULATOR_EVENT_REGULATION_OUT },
};

static struct tps6594_regulator_irq_type tps65224_buck4_irq_types[] = {
	{ TPS65224_IRQ_NAME_BUCK4_UVOV, "BUCK4", "voltage out of range",
	  REGULATOR_EVENT_REGULATION_OUT },
};

static struct tps6594_regulator_irq_type tps65224_ldo1_irq_types[] = {
	{ TPS65224_IRQ_NAME_LDO1_UVOV, "LDO1", "voltage out of range",
	  REGULATOR_EVENT_REGULATION_OUT },
};

static struct tps6594_regulator_irq_type tps65224_ldo2_irq_types[] = {
	{ TPS65224_IRQ_NAME_LDO2_UVOV, "LDO2", "voltage out of range",
	  REGULATOR_EVENT_REGULATION_OUT },
};

static struct tps6594_regulator_irq_type tps65224_ldo3_irq_types[] = {
	{ TPS65224_IRQ_NAME_LDO3_UVOV, "LDO3", "voltage out of range",
	  REGULATOR_EVENT_REGULATION_OUT },
};

static struct tps6594_regulator_irq_type *tps6594_bucks_irq_types[] = {
	tps6594_buck1_irq_types,
	tps6594_buck2_irq_types,
	tps6594_buck3_irq_types,
	tps6594_buck4_irq_types,
	tps6594_buck5_irq_types,
};

static struct tps6594_regulator_irq_type *tps6594_ldos_irq_types[] = {
	tps6594_ldo1_irq_types,
	tps6594_ldo2_irq_types,
	tps6594_ldo3_irq_types,
	tps6594_ldo4_irq_types,
};

static struct tps6594_regulator_irq_type *tps65224_bucks_irq_types[] = {
	tps65224_buck1_irq_types,
	tps65224_buck2_irq_types,
	tps65224_buck3_irq_types,
	tps65224_buck4_irq_types,
};

static struct tps6594_regulator_irq_type *tps65224_ldos_irq_types[] = {
	tps65224_ldo1_irq_types,
	tps65224_ldo2_irq_types,
	tps65224_ldo3_irq_types,
};

static const struct regulator_desc tps6594_multi_regs[] = {
	TPS6594_REGULATOR("BUCK12", "buck12", TPS6594_BUCK_1,
			  REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
			  TPS6594_REG_BUCKX_VOUT_1(0),
			  TPS6594_MASK_BUCKS_VSET,
			  TPS6594_REG_BUCKX_CTRL(0),
			  TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
			  4, 4000, 0, NULL, 0, 0),
	TPS6594_REGULATOR("BUCK34", "buck34", TPS6594_BUCK_3,
			  REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
			  TPS6594_REG_BUCKX_VOUT_1(2),
			  TPS6594_MASK_BUCKS_VSET,
			  TPS6594_REG_BUCKX_CTRL(2),
			  TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
			  4, 0, 0, NULL, 0, 0),
	TPS6594_REGULATOR("BUCK123", "buck123", TPS6594_BUCK_1,
			  REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
			  TPS6594_REG_BUCKX_VOUT_1(0),
			  TPS6594_MASK_BUCKS_VSET,
			  TPS6594_REG_BUCKX_CTRL(0),
			  TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
			  4, 4000, 0, NULL, 0, 0),
	TPS6594_REGULATOR("BUCK1234", "buck1234", TPS6594_BUCK_1,
			  REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
			  TPS6594_REG_BUCKX_VOUT_1(0),
			  TPS6594_MASK_BUCKS_VSET,
			  TPS6594_REG_BUCKX_CTRL(0),
			  TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
			  4, 4000, 0, NULL, 0, 0),
};

static const struct regulator_desc tps65224_multi_regs[] = {
	TPS6594_REGULATOR("BUCK12", "buck12", TPS6594_BUCK_1,
			  REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS65224_MASK_BUCK1_VSET,
			  TPS6594_REG_BUCKX_VOUT_1(0),
			  TPS65224_MASK_BUCK1_VSET,
			  TPS6594_REG_BUCKX_CTRL(0),
			  TPS6594_BIT_BUCK_EN, 0, 0, tps65224_bucks_1_ranges,
			  4, 4000, 0, NULL, 0, 0),
};

static const struct regulator_desc tps6594_ldo_regs[] = {
	TPS6594_REGULATOR("LDO1", "ldo1", TPS6594_LDO_1,
			  REGULATOR_VOLTAGE, tps6594_ldos_1_2_3_ops, TPS6594_MASK_LDO123_VSET,
			  TPS6594_REG_LDOX_VOUT(0),
			  TPS6594_MASK_LDO123_VSET,
			  TPS6594_REG_LDOX_CTRL(0),
			  TPS6594_BIT_LDO_EN, 0, 0, ldos_1_2_3_ranges,
			  1, 0, 0, NULL, 0, TPS6594_BIT_LDO_BYPASS),
	TPS6594_REGULATOR("LDO2", "ldo2", TPS6594_LDO_2,
			  REGULATOR_VOLTAGE, tps6594_ldos_1_2_3_ops, TPS6594_MASK_LDO123_VSET,
			  TPS6594_REG_LDOX_VOUT(1),
			  TPS6594_MASK_LDO123_VSET,
			  TPS6594_REG_LDOX_CTRL(1),
			  TPS6594_BIT_LDO_EN, 0, 0, ldos_1_2_3_ranges,
			  1, 0, 0, NULL, 0, TPS6594_BIT_LDO_BYPASS),
	TPS6594_REGULATOR("LDO3", "ldo3", TPS6594_LDO_3,
			  REGULATOR_VOLTAGE, tps6594_ldos_1_2_3_ops, TPS6594_MASK_LDO123_VSET,
			  TPS6594_REG_LDOX_VOUT(2),
			  TPS6594_MASK_LDO123_VSET,
			  TPS6594_REG_LDOX_CTRL(2),
			  TPS6594_BIT_LDO_EN, 0, 0, ldos_1_2_3_ranges,
			  1, 0, 0, NULL, 0, TPS6594_BIT_LDO_BYPASS),
	TPS6594_REGULATOR("LDO4", "ldo4", TPS6594_LDO_4,
			  REGULATOR_VOLTAGE, tps6594_ldos_4_ops, TPS6594_MASK_LDO4_VSET >> 1,
			  TPS6594_REG_LDOX_VOUT(3),
			  TPS6594_MASK_LDO4_VSET,
			  TPS6594_REG_LDOX_CTRL(3),
			  TPS6594_BIT_LDO_EN, 0, 0, ldos_4_ranges,
			  1, 0, 0, NULL, 0, 0),
};

static const struct regulator_desc tps65224_ldo_regs[] = {
	TPS6594_REGULATOR("LDO1", "ldo1", TPS6594_LDO_1,
			  REGULATOR_VOLTAGE, tps6594_ldos_1_2_3_ops, TPS6594_MASK_LDO123_VSET,
			  TPS6594_REG_LDOX_VOUT(0),
			  TPS6594_MASK_LDO123_VSET,
			  TPS6594_REG_LDOX_CTRL(0),
			  TPS6594_BIT_LDO_EN, 0, 0, tps65224_ldos_1_ranges,
			  1, 0, 0, NULL, 0, TPS6594_BIT_LDO_BYPASS),
	TPS6594_REGULATOR("LDO2", "ldo2", TPS6594_LDO_2,
			  REGULATOR_VOLTAGE, tps6594_ldos_1_2_3_ops, TPS6594_MASK_LDO123_VSET,
			  TPS6594_REG_LDOX_VOUT(1),
			  TPS6594_MASK_LDO123_VSET,
			  TPS6594_REG_LDOX_CTRL(1),
			  TPS6594_BIT_LDO_EN, 0, 0, tps65224_ldos_2_3_ranges,
			  1, 0, 0, NULL, 0, TPS6594_BIT_LDO_BYPASS),
	TPS6594_REGULATOR("LDO3", "ldo3", TPS6594_LDO_3,
			  REGULATOR_VOLTAGE, tps6594_ldos_1_2_3_ops, TPS6594_MASK_LDO123_VSET,
			  TPS6594_REG_LDOX_VOUT(2),
			  TPS6594_MASK_LDO123_VSET,
			  TPS6594_REG_LDOX_CTRL(2),
			  TPS6594_BIT_LDO_EN, 0, 0, tps65224_ldos_2_3_ranges,
			  1, 0, 0, NULL, 0, TPS6594_BIT_LDO_BYPASS),
};

static irqreturn_t tps6594_regulator_irq_handler(int irq, void *data)
{
	struct tps6594_regulator_irq_data *irq_data = data;

	if (irq_data->type->event_name[0] == '\0') {
		/* This is the timeout interrupt no specific regulator */
		dev_err(irq_data->dev,
			"System was put in shutdown due to timeout during an active or standby transition.\n");
		return IRQ_HANDLED;
	}

	dev_err(irq_data->dev, "Error IRQ trap %s for %s\n",
		irq_data->type->event_name, irq_data->type->regulator_name);

	regulator_notifier_call_chain(irq_data->rdev,
				      irq_data->type->event, NULL);

	return IRQ_HANDLED;
}

static int tps6594_request_reg_irqs(struct platform_device *pdev,
				    struct regulator_dev *rdev,
				    struct tps6594_regulator_irq_data *irq_data,
				    struct tps6594_regulator_irq_type *regs_irq_types,
				    size_t interrupt_cnt,
				    int *irq_idx)
{
	struct tps6594_regulator_irq_type *irq_type;
	struct tps6594 *tps = dev_get_drvdata(pdev->dev.parent);
	size_t j;
	int irq;
	int error;

	for (j = 0; j < interrupt_cnt; j++) {
		irq_type = &regs_irq_types[j];
		irq = platform_get_irq_byname(pdev, irq_type->irq_name);
		if (irq < 0)
			return -EINVAL;

		irq_data[*irq_idx].dev = tps->dev;
		irq_data[*irq_idx].type = irq_type;
		irq_data[*irq_idx].rdev = rdev;

		error = devm_request_threaded_irq(tps->dev, irq, NULL,
						  tps6594_regulator_irq_handler, IRQF_ONESHOT,
						  irq_type->irq_name, &irq_data[*irq_idx]);
		if (error) {
			dev_err(tps->dev, "tps6594 failed to request %s IRQ %d: %d\n",
				irq_type->irq_name, irq, error);
			return error;
		}
		(*irq_idx)++;
	}
	return 0;
}

static int tps6594_regulator_probe(struct platform_device *pdev)
{
	struct tps6594 *tps = dev_get_drvdata(pdev->dev.parent);
	struct regulator_dev *rdev;
	struct device_node *np = NULL;
	struct device_node *np_pmic_parent = NULL;
	struct regulator_config config = {};
	struct tps6594_regulator_irq_data *irq_data;
	struct tps6594_ext_regulator_irq_data *irq_ext_reg_data;
	struct tps6594_regulator_irq_type *irq_type;
	struct tps6594_regulator_irq_type *irq_types;
	bool buck_configured[BUCK_NB] = { false };
	bool buck_multi[MULTI_PHASE_NB] = { false };

	static const char *npname;
	int error, i, irq, multi;
	int irq_idx = 0;
	int buck_idx = 0;
	int nr_ldo;
	int nr_buck;
	int nr_types;
	unsigned int irq_count;
	unsigned int multi_phase_cnt;
	size_t reg_irq_nb;
	struct tps6594_regulator_irq_type **bucks_irq_types;
	const struct regulator_desc *multi_regs;
	struct tps6594_regulator_irq_type **ldos_irq_types;
	const struct regulator_desc *ldo_regs;
	size_t interrupt_count;

	if (tps->chip_id == TPS65224) {
		bucks_irq_types = tps65224_bucks_irq_types;
		interrupt_count = ARRAY_SIZE(tps65224_buck1_irq_types);
		multi_regs = tps65224_multi_regs;
		ldos_irq_types = tps65224_ldos_irq_types;
		ldo_regs = tps65224_ldo_regs;
		multi_phase_cnt = ARRAY_SIZE(tps65224_multi_regs);
	} else {
		bucks_irq_types = tps6594_bucks_irq_types;
		interrupt_count = ARRAY_SIZE(tps6594_buck1_irq_types);
		multi_regs = tps6594_multi_regs;
		ldos_irq_types = tps6594_ldos_irq_types;
		ldo_regs = tps6594_ldo_regs;
		multi_phase_cnt = ARRAY_SIZE(tps6594_multi_regs);
	}

	enum {
		MULTI_BUCK12,
		MULTI_BUCK12_34,
		MULTI_BUCK123,
		MULTI_BUCK1234,
	};

	config.dev = tps->dev;
	config.driver_data = tps;
	config.regmap = tps->regmap;

	/*
	 * Switch case defines different possible multi phase config
	 * This is based on dts buck node name.
	 * Buck node name must be chosen accordingly.
	 * Default case is no Multiphase buck.
	 * In case of Multiphase configuration, value should be defined for
	 * buck_configured to avoid creating bucks for every buck in multiphase
	 */
	for (multi = 0; multi < multi_phase_cnt; multi++) {
		np = of_find_node_by_name(tps->dev->of_node, multi_regs[multi].supply_name);
		npname = of_node_full_name(np);
		np_pmic_parent = of_get_parent(of_get_parent(np));
		if (of_node_cmp(of_node_full_name(np_pmic_parent), tps->dev->of_node->full_name))
			continue;
		if (strcmp(npname, multi_regs[multi].supply_name) == 0) {
			switch (multi) {
			case MULTI_BUCK12:
				buck_multi[0] = true;
				buck_configured[0] = true;
				buck_configured[1] = true;
				break;
			/* multiphase buck34 is supported only with buck12 */
			case MULTI_BUCK12_34:
				buck_multi[0] = true;
				buck_multi[1] = true;
				buck_configured[0] = true;
				buck_configured[1] = true;
				buck_configured[2] = true;
				buck_configured[3] = true;
				break;
			case MULTI_BUCK123:
				buck_multi[2] = true;
				buck_configured[0] = true;
				buck_configured[1] = true;
				buck_configured[2] = true;
				break;
			case MULTI_BUCK1234:
				buck_multi[3] = true;
				buck_configured[0] = true;
				buck_configured[1] = true;
				buck_configured[2] = true;
				buck_configured[3] = true;
				break;
			}
		}
	}

	if (tps->chip_id == TPS65224) {
		nr_buck = ARRAY_SIZE(tps65224_buck_regs);
		nr_ldo = ARRAY_SIZE(tps65224_ldo_regs);
		nr_types = TPS65224_REGS_INT_NB;
	} else {
		nr_buck = ARRAY_SIZE(buck_regs);
		nr_ldo = (tps->chip_id == LP8764) ? 0 : ARRAY_SIZE(tps6594_ldo_regs);
		nr_types = REGS_INT_NB;
	}

	reg_irq_nb = nr_types * (nr_buck + nr_ldo);

	irq_data = devm_kmalloc_array(tps->dev, reg_irq_nb,
				      sizeof(struct tps6594_regulator_irq_data), GFP_KERNEL);
	if (!irq_data)
		return -ENOMEM;

	for (i = 0; i < multi_phase_cnt; i++) {
		if (!buck_multi[i])
			continue;

		rdev = devm_regulator_register(&pdev->dev, &multi_regs[i], &config);
		if (IS_ERR(rdev))
			return dev_err_probe(tps->dev, PTR_ERR(rdev),
					     "failed to register %s regulator\n",
					     pdev->name);

		/* config multiphase buck12+buck34 */
		if (i == MULTI_BUCK12_34)
			buck_idx = 2;

		error = tps6594_request_reg_irqs(pdev, rdev, irq_data,
						 bucks_irq_types[buck_idx],
						 interrupt_count, &irq_idx);
		if (error)
			return error;

		error = tps6594_request_reg_irqs(pdev, rdev, irq_data,
						 bucks_irq_types[buck_idx + 1],
						 interrupt_count, &irq_idx);
		if (error)
			return error;

		if (i == MULTI_BUCK123 || i == MULTI_BUCK1234) {
			error = tps6594_request_reg_irqs(pdev, rdev, irq_data,
							 tps6594_bucks_irq_types[buck_idx + 2],
							 interrupt_count,
							 &irq_idx);
			if (error)
				return error;
		}
		if (i == MULTI_BUCK1234) {
			error = tps6594_request_reg_irqs(pdev, rdev, irq_data,
							 tps6594_bucks_irq_types[buck_idx + 3],
							 interrupt_count,
							 &irq_idx);
			if (error)
				return error;
		}
	}

	for (i = 0; i < nr_buck; i++) {
		if (buck_configured[i])
			continue;

		const struct regulator_desc *buck_cfg = (tps->chip_id == TPS65224) ?
							 tps65224_buck_regs : buck_regs;

		rdev = devm_regulator_register(&pdev->dev, &buck_cfg[i], &config);
		if (IS_ERR(rdev))
			return dev_err_probe(tps->dev, PTR_ERR(rdev),
					     "failed to register %s regulator\n", pdev->name);

		error = tps6594_request_reg_irqs(pdev, rdev, irq_data,
						 bucks_irq_types[i], interrupt_count, &irq_idx);
		if (error)
			return error;
	}

	/* LP8764 doesn't have LDO */
	if (tps->chip_id != LP8764) {
		for (i = 0; i < nr_ldo; i++) {
			rdev = devm_regulator_register(&pdev->dev, &ldo_regs[i], &config);
			if (IS_ERR(rdev))
				return dev_err_probe(tps->dev, PTR_ERR(rdev),
						     "failed to register %s regulator\n",
						     pdev->name);

			error = tps6594_request_reg_irqs(pdev, rdev, irq_data,
							 ldos_irq_types[i], interrupt_count,
							 &irq_idx);
			if (error)
				return error;
		}
	}

	if (tps->chip_id == TPS65224) {
		irq_types = tps65224_ext_regulator_irq_types;
		irq_count = ARRAY_SIZE(tps65224_ext_regulator_irq_types);
	} else {
		irq_types = tps6594_ext_regulator_irq_types;
		if (tps->chip_id == LP8764)
			irq_count = ARRAY_SIZE(tps6594_ext_regulator_irq_types);
		else
			/* TPS6593 supports only VCCA OV and UV */
			irq_count = 2;
	}

	irq_ext_reg_data = devm_kmalloc_array(tps->dev,
					      irq_count,
					      sizeof(struct tps6594_ext_regulator_irq_data),
					      GFP_KERNEL);
	if (!irq_ext_reg_data)
		return -ENOMEM;

	for (i = 0; i < irq_count; ++i) {
		irq_type = &irq_types[i];
		irq = platform_get_irq_byname(pdev, irq_type->irq_name);
		if (irq < 0)
			return -EINVAL;

		irq_ext_reg_data[i].dev = tps->dev;
		irq_ext_reg_data[i].type = irq_type;

		error = devm_request_threaded_irq(tps->dev, irq, NULL,
						  tps6594_regulator_irq_handler,
						  IRQF_ONESHOT,
						  irq_type->irq_name,
						  &irq_ext_reg_data[i]);
		if (error)
			return dev_err_probe(tps->dev, error,
					     "failed to request %s IRQ %d\n",
					     irq_type->irq_name, irq);
	}
	return 0;
}

static struct platform_driver tps6594_regulator_driver = {
	.driver = {
		.name = "tps6594-regulator",
	},
	.probe = tps6594_regulator_probe,
};

module_platform_driver(tps6594_regulator_driver);

MODULE_ALIAS("platform:tps6594-regulator");
MODULE_AUTHOR("Jerome Neanne <jneanne@baylibre.com>");
MODULE_AUTHOR("Nirmala Devi Mal Nadar <m.nirmaladevi@ltts.com>");
MODULE_DESCRIPTION("TPS6594 voltage regulator driver");
MODULE_LICENSE("GPL");