summaryrefslogtreecommitdiffstats
path: root/drivers/regulator/pca9450-regulator.c
blob: 2ab365d2749f9a44d9f78ec0d8d684d2845122b3 (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
// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright 2020 NXP.
 * NXP PCA9450 pmic driver
 */

#include <linux/err.h>
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/of_regulator.h>
#include <linux/regulator/pca9450.h>

struct pc9450_dvs_config {
	unsigned int run_reg; /* dvs0 */
	unsigned int run_mask;
	unsigned int standby_reg; /* dvs1 */
	unsigned int standby_mask;
};

struct pca9450_regulator_desc {
	struct regulator_desc desc;
	const struct pc9450_dvs_config dvs;
};

struct pca9450 {
	struct device *dev;
	struct regmap *regmap;
	struct gpio_desc *sd_vsel_gpio;
	enum pca9450_chip_type type;
	unsigned int rcnt;
	int irq;
};

static const struct regmap_range pca9450_status_range = {
	.range_min = PCA9450_REG_INT1,
	.range_max = PCA9450_REG_PWRON_STAT,
};

static const struct regmap_access_table pca9450_volatile_regs = {
	.yes_ranges = &pca9450_status_range,
	.n_yes_ranges = 1,
};

static const struct regmap_config pca9450_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,
	.volatile_table = &pca9450_volatile_regs,
	.max_register = PCA9450_MAX_REGISTER - 1,
	.cache_type = REGCACHE_RBTREE,
};

/*
 * BUCK1/2/3
 * BUCK1RAM[1:0] BUCK1 DVS ramp rate setting
 * 00: 25mV/1usec
 * 01: 25mV/2usec
 * 10: 25mV/4usec
 * 11: 25mV/8usec
 */
static const unsigned int pca9450_dvs_buck_ramp_table[] = {
	25000, 12500, 6250, 3125
};

static const struct regulator_ops pca9450_dvs_buck_regulator_ops = {
	.enable = regulator_enable_regmap,
	.disable = regulator_disable_regmap,
	.is_enabled = regulator_is_enabled_regmap,
	.list_voltage = regulator_list_voltage_linear_range,
	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	.set_voltage_time_sel = regulator_set_voltage_time_sel,
	.set_ramp_delay	= regulator_set_ramp_delay_regmap,
};

static const struct regulator_ops pca9450_buck_regulator_ops = {
	.enable = regulator_enable_regmap,
	.disable = regulator_disable_regmap,
	.is_enabled = regulator_is_enabled_regmap,
	.list_voltage = regulator_list_voltage_linear_range,
	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	.set_voltage_time_sel = regulator_set_voltage_time_sel,
};

static const struct regulator_ops pca9450_ldo_regulator_ops = {
	.enable = regulator_enable_regmap,
	.disable = regulator_disable_regmap,
	.is_enabled = regulator_is_enabled_regmap,
	.list_voltage = regulator_list_voltage_linear_range,
	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	.get_voltage_sel = regulator_get_voltage_sel_regmap,
};

/*
 * BUCK1/2/3
 * 0.60 to 2.1875V (12.5mV step)
 */
static const struct linear_range pca9450_dvs_buck_volts[] = {
	REGULATOR_LINEAR_RANGE(600000,  0x00, 0x7F, 12500),
};

/*
 * BUCK4/5/6
 * 0.6V to 3.4V (25mV step)
 */
static const struct linear_range pca9450_buck_volts[] = {
	REGULATOR_LINEAR_RANGE(600000, 0x00, 0x70, 25000),
	REGULATOR_LINEAR_RANGE(3400000, 0x71, 0x7F, 0),
};

/*
 * LDO1
 * 1.6 to 3.3V ()
 */
static const struct linear_range pca9450_ldo1_volts[] = {
	REGULATOR_LINEAR_RANGE(1600000, 0x00, 0x03, 100000),
	REGULATOR_LINEAR_RANGE(3000000, 0x04, 0x07, 100000),
};

/*
 * LDO2
 * 0.8 to 1.15V (50mV step)
 */
static const struct linear_range pca9450_ldo2_volts[] = {
	REGULATOR_LINEAR_RANGE(800000, 0x00, 0x07, 50000),
};

/*
 * LDO3/4
 * 0.8 to 3.3V (100mV step)
 */
static const struct linear_range pca9450_ldo34_volts[] = {
	REGULATOR_LINEAR_RANGE(800000, 0x00, 0x19, 100000),
	REGULATOR_LINEAR_RANGE(3300000, 0x1A, 0x1F, 0),
};

/*
 * LDO5
 * 1.8 to 3.3V (100mV step)
 */
static const struct linear_range pca9450_ldo5_volts[] = {
	REGULATOR_LINEAR_RANGE(1800000,  0x00, 0x0F, 100000),
};

static int buck_set_dvs(const struct regulator_desc *desc,
			struct device_node *np, struct regmap *regmap,
			char *prop, unsigned int reg, unsigned int mask)
{
	int ret, i;
	uint32_t uv;

	ret = of_property_read_u32(np, prop, &uv);
	if (ret == -EINVAL)
		return 0;
	else if (ret)
		return ret;

	for (i = 0; i < desc->n_voltages; i++) {
		ret = regulator_desc_list_voltage_linear_range(desc, i);
		if (ret < 0)
			continue;
		if (ret == uv) {
			i <<= ffs(desc->vsel_mask) - 1;
			ret = regmap_update_bits(regmap, reg, mask, i);
			break;
		}
	}

	if (ret == 0) {
		struct pca9450_regulator_desc *regulator = container_of(desc,
					struct pca9450_regulator_desc, desc);

		/* Enable DVS control through PMIC_STBY_REQ for this BUCK */
		ret = regmap_update_bits(regmap, regulator->desc.enable_reg,
					 BUCK1_DVS_CTRL, BUCK1_DVS_CTRL);
	}
	return ret;
}

static int pca9450_set_dvs_levels(struct device_node *np,
			    const struct regulator_desc *desc,
			    struct regulator_config *cfg)
{
	struct pca9450_regulator_desc *data = container_of(desc,
					struct pca9450_regulator_desc, desc);
	const struct pc9450_dvs_config *dvs = &data->dvs;
	unsigned int reg, mask;
	char *prop;
	int i, ret = 0;

	for (i = 0; i < PCA9450_DVS_LEVEL_MAX; i++) {
		switch (i) {
		case PCA9450_DVS_LEVEL_RUN:
			prop = "nxp,dvs-run-voltage";
			reg = dvs->run_reg;
			mask = dvs->run_mask;
			break;
		case PCA9450_DVS_LEVEL_STANDBY:
			prop = "nxp,dvs-standby-voltage";
			reg = dvs->standby_reg;
			mask = dvs->standby_mask;
			break;
		default:
			return -EINVAL;
		}

		ret = buck_set_dvs(desc, np, cfg->regmap, prop, reg, mask);
		if (ret)
			break;
	}

	return ret;
}

static const struct pca9450_regulator_desc pca9450a_regulators[] = {
	{
		.desc = {
			.name = "buck1",
			.of_match = of_match_ptr("BUCK1"),
			.regulators_node = of_match_ptr("regulators"),
			.id = PCA9450_BUCK1,
			.ops = &pca9450_dvs_buck_regulator_ops,
			.type = REGULATOR_VOLTAGE,
			.n_voltages = PCA9450_BUCK1_VOLTAGE_NUM,
			.linear_ranges = pca9450_dvs_buck_volts,
			.n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts),
			.vsel_reg = PCA9450_REG_BUCK1OUT_DVS0,
			.vsel_mask = BUCK1OUT_DVS0_MASK,
			.enable_reg = PCA9450_REG_BUCK1CTRL,
			.enable_mask = BUCK1_ENMODE_MASK,
			.ramp_reg = PCA9450_REG_BUCK1CTRL,
			.ramp_mask = BUCK1_RAMP_MASK,
			.ramp_delay_table = pca9450_dvs_buck_ramp_table,
			.n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table),
			.owner = THIS_MODULE,
			.of_parse_cb = pca9450_set_dvs_levels,
		},
		.dvs = {
			.run_reg = PCA9450_REG_BUCK1OUT_DVS0,
			.run_mask = BUCK1OUT_DVS0_MASK,
			.standby_reg = PCA9450_REG_BUCK1OUT_DVS1,
			.standby_mask = BUCK1OUT_DVS1_MASK,
		},
	},
	{
		.desc = {
			.name = "buck2",
			.of_match = of_match_ptr("BUCK2"),
			.regulators_node = of_match_ptr("regulators"),
			.id = PCA9450_BUCK2,
			.ops = &pca9450_dvs_buck_regulator_ops,
			.type = REGULATOR_VOLTAGE,
			.n_voltages = PCA9450_BUCK2_VOLTAGE_NUM,
			.linear_ranges = pca9450_dvs_buck_volts,
			.n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts),
			.vsel_reg = PCA9450_REG_BUCK2OUT_DVS0,
			.vsel_mask = BUCK2OUT_DVS0_MASK,
			.enable_reg = PCA9450_REG_BUCK2CTRL,
			.enable_mask = BUCK2_ENMODE_MASK,
			.ramp_reg = PCA9450_REG_BUCK2CTRL,
			.ramp_mask = BUCK2_RAMP_MASK,
			.ramp_delay_table = pca9450_dvs_buck_ramp_table,
			.n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table),
			.owner = THIS_MODULE,
			.of_parse_cb = pca9450_set_dvs_levels,
		},
		.dvs = {
			.run_reg = PCA9450_REG_BUCK2OUT_DVS0,
			.run_mask = BUCK2OUT_DVS0_MASK,
			.standby_reg = PCA9450_REG_BUCK2OUT_DVS1,
			.standby_mask = BUCK2OUT_DVS1_MASK,
		},
	},
	{
		.desc = {
			.name = "buck3",
			.of_match = of_match_ptr("BUCK3"),
			.regulators_node = of_match_ptr("regulators"),
			.id = PCA9450_BUCK3,
			.ops = &pca9450_dvs_buck_regulator_ops,
			.type = REGULATOR_VOLTAGE,
			.n_voltages = PCA9450_BUCK3_VOLTAGE_NUM,
			.linear_ranges = pca9450_dvs_buck_volts,
			.n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts),
			.vsel_reg = PCA9450_REG_BUCK3OUT_DVS0,
			.vsel_mask = BUCK3OUT_DVS0_MASK,
			.enable_reg = PCA9450_REG_BUCK3CTRL,
			.enable_mask = BUCK3_ENMODE_MASK,
			.ramp_reg = PCA9450_REG_BUCK3CTRL,
			.ramp_mask = BUCK3_RAMP_MASK,
			.ramp_delay_table = pca9450_dvs_buck_ramp_table,
			.n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table),
			.owner = THIS_MODULE,
			.of_parse_cb = pca9450_set_dvs_levels,
		},
		.dvs = {
			.run_reg = PCA9450_REG_BUCK3OUT_DVS0,
			.run_mask = BUCK3OUT_DVS0_MASK,
			.standby_reg = PCA9450_REG_BUCK3OUT_DVS1,
			.standby_mask = BUCK3OUT_DVS1_MASK,
		},
	},
	{
		.desc = {
			.name = "buck4",
			.of_match = of_match_ptr("BUCK4"),
			.regulators_node = of_match_ptr("regulators"),
			.id = PCA9450_BUCK4,
			.ops = &pca9450_buck_regulator_ops,
			.type = REGULATOR_VOLTAGE,
			.n_voltages = PCA9450_BUCK4_VOLTAGE_NUM,
			.linear_ranges = pca9450_buck_volts,
			.n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
			.vsel_reg = PCA9450_REG_BUCK4OUT,
			.vsel_mask = BUCK4OUT_MASK,
			.enable_reg = PCA9450_REG_BUCK4CTRL,
			.enable_mask = BUCK4_ENMODE_MASK,
			.owner = THIS_MODULE,
		},
	},
	{
		.desc = {
			.name = "buck5",
			.of_match = of_match_ptr("BUCK5"),
			.regulators_node = of_match_ptr("regulators"),
			.id = PCA9450_BUCK5,
			.ops = &pca9450_buck_regulator_ops,
			.type = REGULATOR_VOLTAGE,
			.n_voltages = PCA9450_BUCK5_VOLTAGE_NUM,
			.linear_ranges = pca9450_buck_volts,
			.n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
			.vsel_reg = PCA9450_REG_BUCK5OUT,
			.vsel_mask = BUCK5OUT_MASK,
			.enable_reg = PCA9450_REG_BUCK5CTRL,
			.enable_mask = BUCK5_ENMODE_MASK,
			.owner = THIS_MODULE,
		},
	},
	{
		.desc = {
			.name = "buck6",
			.of_match = of_match_ptr("BUCK6"),
			.regulators_node = of_match_ptr("regulators"),
			.id = PCA9450_BUCK6,
			.ops = &pca9450_buck_regulator_ops,
			.type = REGULATOR_VOLTAGE,
			.n_voltages = PCA9450_BUCK6_VOLTAGE_NUM,
			.linear_ranges = pca9450_buck_volts,
			.n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
			.vsel_reg = PCA9450_REG_BUCK6OUT,
			.vsel_mask = BUCK6OUT_MASK,
			.enable_reg = PCA9450_REG_BUCK6CTRL,
			.enable_mask = BUCK6_ENMODE_MASK,
			.owner = THIS_MODULE,
		},
	},
	{
		.desc = {
			.name = "ldo1",
			.of_match = of_match_ptr("LDO1"),
			.regulators_node = of_match_ptr("regulators"),
			.id = PCA9450_LDO1,
			.ops = &pca9450_ldo_regulator_ops,
			.type = REGULATOR_VOLTAGE,
			.n_voltages = PCA9450_LDO1_VOLTAGE_NUM,
			.linear_ranges = pca9450_ldo1_volts,
			.n_linear_ranges = ARRAY_SIZE(pca9450_ldo1_volts),
			.vsel_reg = PCA9450_REG_LDO1CTRL,
			.vsel_mask = LDO1OUT_MASK,
			.enable_reg = PCA9450_REG_LDO1CTRL,
			.enable_mask = LDO1_EN_MASK,
			.owner = THIS_MODULE,
		},
	},
	{
		.desc = {
			.name = "ldo2",
			.of_match = of_match_ptr("LDO2"),
			.regulators_node = of_match_ptr("regulators"),
			.id = PCA9450_LDO2,
			.ops = &pca9450_ldo_regulator_ops,
			.type = REGULATOR_VOLTAGE,
			.n_voltages = PCA9450_LDO2_VOLTAGE_NUM,
			.linear_ranges = pca9450_ldo2_volts,
			.n_linear_ranges = ARRAY_SIZE(pca9450_ldo2_volts),
			.vsel_reg = PCA9450_REG_LDO2CTRL,
			.vsel_mask = LDO2OUT_MASK,
			.enable_reg = PCA9450_REG_LDO2CTRL,
			.enable_mask = LDO2_EN_MASK,
			.owner = THIS_MODULE,
		},
	},
	{
		.desc = {
			.name = "ldo3",
			.of_match = of_match_ptr("LDO3"),
			.regulators_node = of_match_ptr("regulators"),
			.id = PCA9450_LDO3,
			.ops = &pca9450_ldo_regulator_ops,
			.type = REGULATOR_VOLTAGE,
			.n_voltages = PCA9450_LDO3_VOLTAGE_NUM,
			.linear_ranges = pca9450_ldo34_volts,
			.n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts),
			.vsel_reg = PCA9450_REG_LDO3CTRL,
			.vsel_mask = LDO3OUT_MASK,
			.enable_reg = PCA9450_REG_LDO3CTRL,
			.enable_mask = LDO3_EN_MASK,
			.owner = THIS_MODULE,
		},
	},
	{
		.desc = {
			.name = "ldo4",
			.of_match = of_match_ptr("LDO4"),
			.regulators_node = of_match_ptr("regulators"),
			.id = PCA9450_LDO4,
			.ops = &pca9450_ldo_regulator_ops,
			.type = REGULATOR_VOLTAGE,
			.n_voltages = PCA9450_LDO4_VOLTAGE_NUM,
			.linear_ranges = pca9450_ldo34_volts,
			.n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts),
			.vsel_reg = PCA9450_REG_LDO4CTRL,
			.vsel_mask = LDO4OUT_MASK,
			.enable_reg = PCA9450_REG_LDO4CTRL,
			.enable_mask = LDO4_EN_MASK,
			.owner = THIS_MODULE,
		},
	},
	{
		.desc = {
			.name = "ldo5",
			.of_match = of_match_ptr("LDO5"),
			.regulators_node = of_match_ptr("regulators"),
			.id = PCA9450_LDO5,
			.ops = &pca9450_ldo_regulator_ops,
			.type = REGULATOR_VOLTAGE,
			.n_voltages = PCA9450_LDO5_VOLTAGE_NUM,
			.linear_ranges = pca9450_ldo5_volts,
			.n_linear_ranges = ARRAY_SIZE(pca9450_ldo5_volts),
			.vsel_reg = PCA9450_REG_LDO5CTRL_H,
			.vsel_mask = LDO5HOUT_MASK,
			.enable_reg = PCA9450_REG_LDO5CTRL_H,
			.enable_mask = LDO5H_EN_MASK,
			.owner = THIS_MODULE,
		},
	},
};

/*
 * Buck3 removed on PCA9450B and connected with Buck1 internal for dual phase
 * on PCA9450C as no Buck3.
 */
static const struct pca9450_regulator_desc pca9450bc_regulators[] = {
	{
		.desc = {
			.name = "buck1",
			.of_match = of_match_ptr("BUCK1"),
			.regulators_node = of_match_ptr("regulators"),
			.id = PCA9450_BUCK1,
			.ops = &pca9450_dvs_buck_regulator_ops,
			.type = REGULATOR_VOLTAGE,
			.n_voltages = PCA9450_BUCK1_VOLTAGE_NUM,
			.linear_ranges = pca9450_dvs_buck_volts,
			.n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts),
			.vsel_reg = PCA9450_REG_BUCK1OUT_DVS0,
			.vsel_mask = BUCK1OUT_DVS0_MASK,
			.enable_reg = PCA9450_REG_BUCK1CTRL,
			.enable_mask = BUCK1_ENMODE_MASK,
			.ramp_reg = PCA9450_REG_BUCK1CTRL,
			.ramp_mask = BUCK1_RAMP_MASK,
			.ramp_delay_table = pca9450_dvs_buck_ramp_table,
			.n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table),
			.owner = THIS_MODULE,
			.of_parse_cb = pca9450_set_dvs_levels,
		},
		.dvs = {
			.run_reg = PCA9450_REG_BUCK1OUT_DVS0,
			.run_mask = BUCK1OUT_DVS0_MASK,
			.standby_reg = PCA9450_REG_BUCK1OUT_DVS1,
			.standby_mask = BUCK1OUT_DVS1_MASK,
		},
	},
	{
		.desc = {
			.name = "buck2",
			.of_match = of_match_ptr("BUCK2"),
			.regulators_node = of_match_ptr("regulators"),
			.id = PCA9450_BUCK2,
			.ops = &pca9450_dvs_buck_regulator_ops,
			.type = REGULATOR_VOLTAGE,
			.n_voltages = PCA9450_BUCK2_VOLTAGE_NUM,
			.linear_ranges = pca9450_dvs_buck_volts,
			.n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts),
			.vsel_reg = PCA9450_REG_BUCK2OUT_DVS0,
			.vsel_mask = BUCK2OUT_DVS0_MASK,
			.enable_reg = PCA9450_REG_BUCK2CTRL,
			.enable_mask = BUCK2_ENMODE_MASK,
			.ramp_reg = PCA9450_REG_BUCK2CTRL,
			.ramp_mask = BUCK2_RAMP_MASK,
			.ramp_delay_table = pca9450_dvs_buck_ramp_table,
			.n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table),
			.owner = THIS_MODULE,
			.of_parse_cb = pca9450_set_dvs_levels,
		},
		.dvs = {
			.run_reg = PCA9450_REG_BUCK2OUT_DVS0,
			.run_mask = BUCK2OUT_DVS0_MASK,
			.standby_reg = PCA9450_REG_BUCK2OUT_DVS1,
			.standby_mask = BUCK2OUT_DVS1_MASK,
		},
	},
	{
		.desc = {
			.name = "buck4",
			.of_match = of_match_ptr("BUCK4"),
			.regulators_node = of_match_ptr("regulators"),
			.id = PCA9450_BUCK4,
			.ops = &pca9450_buck_regulator_ops,
			.type = REGULATOR_VOLTAGE,
			.n_voltages = PCA9450_BUCK4_VOLTAGE_NUM,
			.linear_ranges = pca9450_buck_volts,
			.n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
			.vsel_reg = PCA9450_REG_BUCK4OUT,
			.vsel_mask = BUCK4OUT_MASK,
			.enable_reg = PCA9450_REG_BUCK4CTRL,
			.enable_mask = BUCK4_ENMODE_MASK,
			.owner = THIS_MODULE,
		},
	},
	{
		.desc = {
			.name = "buck5",
			.of_match = of_match_ptr("BUCK5"),
			.regulators_node = of_match_ptr("regulators"),
			.id = PCA9450_BUCK5,
			.ops = &pca9450_buck_regulator_ops,
			.type = REGULATOR_VOLTAGE,
			.n_voltages = PCA9450_BUCK5_VOLTAGE_NUM,
			.linear_ranges = pca9450_buck_volts,
			.n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
			.vsel_reg = PCA9450_REG_BUCK5OUT,
			.vsel_mask = BUCK5OUT_MASK,
			.enable_reg = PCA9450_REG_BUCK5CTRL,
			.enable_mask = BUCK5_ENMODE_MASK,
			.owner = THIS_MODULE,
		},
	},
	{
		.desc = {
			.name = "buck6",
			.of_match = of_match_ptr("BUCK6"),
			.regulators_node = of_match_ptr("regulators"),
			.id = PCA9450_BUCK6,
			.ops = &pca9450_buck_regulator_ops,
			.type = REGULATOR_VOLTAGE,
			.n_voltages = PCA9450_BUCK6_VOLTAGE_NUM,
			.linear_ranges = pca9450_buck_volts,
			.n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
			.vsel_reg = PCA9450_REG_BUCK6OUT,
			.vsel_mask = BUCK6OUT_MASK,
			.enable_reg = PCA9450_REG_BUCK6CTRL,
			.enable_mask = BUCK6_ENMODE_MASK,
			.owner = THIS_MODULE,
		},
	},
	{
		.desc = {
			.name = "ldo1",
			.of_match = of_match_ptr("LDO1"),
			.regulators_node = of_match_ptr("regulators"),
			.id = PCA9450_LDO1,
			.ops = &pca9450_ldo_regulator_ops,
			.type = REGULATOR_VOLTAGE,
			.n_voltages = PCA9450_LDO1_VOLTAGE_NUM,
			.linear_ranges = pca9450_ldo1_volts,
			.n_linear_ranges = ARRAY_SIZE(pca9450_ldo1_volts),
			.vsel_reg = PCA9450_REG_LDO1CTRL,
			.vsel_mask = LDO1OUT_MASK,
			.enable_reg = PCA9450_REG_LDO1CTRL,
			.enable_mask = LDO1_EN_MASK,
			.owner = THIS_MODULE,
		},
	},
	{
		.desc = {
			.name = "ldo2",
			.of_match = of_match_ptr("LDO2"),
			.regulators_node = of_match_ptr("regulators"),
			.id = PCA9450_LDO2,
			.ops = &pca9450_ldo_regulator_ops,
			.type = REGULATOR_VOLTAGE,
			.n_voltages = PCA9450_LDO2_VOLTAGE_NUM,
			.linear_ranges = pca9450_ldo2_volts,
			.n_linear_ranges = ARRAY_SIZE(pca9450_ldo2_volts),
			.vsel_reg = PCA9450_REG_LDO2CTRL,
			.vsel_mask = LDO2OUT_MASK,
			.enable_reg = PCA9450_REG_LDO2CTRL,
			.enable_mask = LDO2_EN_MASK,
			.owner = THIS_MODULE,
		},
	},
	{
		.desc = {
			.name = "ldo3",
			.of_match = of_match_ptr("LDO3"),
			.regulators_node = of_match_ptr("regulators"),
			.id = PCA9450_LDO3,
			.ops = &pca9450_ldo_regulator_ops,
			.type = REGULATOR_VOLTAGE,
			.n_voltages = PCA9450_LDO3_VOLTAGE_NUM,
			.linear_ranges = pca9450_ldo34_volts,
			.n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts),
			.vsel_reg = PCA9450_REG_LDO3CTRL,
			.vsel_mask = LDO3OUT_MASK,
			.enable_reg = PCA9450_REG_LDO3CTRL,
			.enable_mask = LDO3_EN_MASK,
			.owner = THIS_MODULE,
		},
	},
	{
		.desc = {
			.name = "ldo4",
			.of_match = of_match_ptr("LDO4"),
			.regulators_node = of_match_ptr("regulators"),
			.id = PCA9450_LDO4,
			.ops = &pca9450_ldo_regulator_ops,
			.type = REGULATOR_VOLTAGE,
			.n_voltages = PCA9450_LDO4_VOLTAGE_NUM,
			.linear_ranges = pca9450_ldo34_volts,
			.n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts),
			.vsel_reg = PCA9450_REG_LDO4CTRL,
			.vsel_mask = LDO4OUT_MASK,
			.enable_reg = PCA9450_REG_LDO4CTRL,
			.enable_mask = LDO4_EN_MASK,
			.owner = THIS_MODULE,
		},
	},
	{
		.desc = {
			.name = "ldo5",
			.of_match = of_match_ptr("LDO5"),
			.regulators_node = of_match_ptr("regulators"),
			.id = PCA9450_LDO5,
			.ops = &pca9450_ldo_regulator_ops,
			.type = REGULATOR_VOLTAGE,
			.n_voltages = PCA9450_LDO5_VOLTAGE_NUM,
			.linear_ranges = pca9450_ldo5_volts,
			.n_linear_ranges = ARRAY_SIZE(pca9450_ldo5_volts),
			.vsel_reg = PCA9450_REG_LDO5CTRL_H,
			.vsel_mask = LDO5HOUT_MASK,
			.enable_reg = PCA9450_REG_LDO5CTRL_H,
			.enable_mask = LDO5H_EN_MASK,
			.owner = THIS_MODULE,
		},
	},
};

static irqreturn_t pca9450_irq_handler(int irq, void *data)
{
	struct pca9450 *pca9450 = data;
	struct regmap *regmap = pca9450->regmap;
	unsigned int status;
	int ret;

	ret = regmap_read(regmap, PCA9450_REG_INT1, &status);
	if (ret < 0) {
		dev_err(pca9450->dev,
			"Failed to read INT1(%d)\n", ret);
		return IRQ_NONE;
	}

	if (status & IRQ_PWRON)
		dev_warn(pca9450->dev, "PWRON interrupt.\n");

	if (status & IRQ_WDOGB)
		dev_warn(pca9450->dev, "WDOGB interrupt.\n");

	if (status & IRQ_VR_FLT1)
		dev_warn(pca9450->dev, "VRFLT1 interrupt.\n");

	if (status & IRQ_VR_FLT2)
		dev_warn(pca9450->dev, "VRFLT2 interrupt.\n");

	if (status & IRQ_LOWVSYS)
		dev_warn(pca9450->dev, "LOWVSYS interrupt.\n");

	if (status & IRQ_THERM_105)
		dev_warn(pca9450->dev, "IRQ_THERM_105 interrupt.\n");

	if (status & IRQ_THERM_125)
		dev_warn(pca9450->dev, "IRQ_THERM_125 interrupt.\n");

	return IRQ_HANDLED;
}

static int pca9450_i2c_probe(struct i2c_client *i2c)
{
	enum pca9450_chip_type type = (unsigned int)(uintptr_t)
				      of_device_get_match_data(&i2c->dev);
	const struct pca9450_regulator_desc	*regulator_desc;
	struct regulator_config config = { };
	struct pca9450 *pca9450;
	unsigned int device_id, i;
	unsigned int reset_ctrl;
	int ret;

	if (!i2c->irq) {
		dev_err(&i2c->dev, "No IRQ configured?\n");
		return -EINVAL;
	}

	pca9450 = devm_kzalloc(&i2c->dev, sizeof(struct pca9450), GFP_KERNEL);
	if (!pca9450)
		return -ENOMEM;

	switch (type) {
	case PCA9450_TYPE_PCA9450A:
		regulator_desc = pca9450a_regulators;
		pca9450->rcnt = ARRAY_SIZE(pca9450a_regulators);
		break;
	case PCA9450_TYPE_PCA9450BC:
		regulator_desc = pca9450bc_regulators;
		pca9450->rcnt = ARRAY_SIZE(pca9450bc_regulators);
		break;
	default:
		dev_err(&i2c->dev, "Unknown device type");
		return -EINVAL;
	}

	pca9450->irq = i2c->irq;
	pca9450->type = type;
	pca9450->dev = &i2c->dev;

	dev_set_drvdata(&i2c->dev, pca9450);

	pca9450->regmap = devm_regmap_init_i2c(i2c,
					       &pca9450_regmap_config);
	if (IS_ERR(pca9450->regmap)) {
		dev_err(&i2c->dev, "regmap initialization failed\n");
		return PTR_ERR(pca9450->regmap);
	}

	ret = regmap_read(pca9450->regmap, PCA9450_REG_DEV_ID, &device_id);
	if (ret) {
		dev_err(&i2c->dev, "Read device id error\n");
		return ret;
	}

	/* Check your board and dts for match the right pmic */
	if (((device_id >> 4) != 0x1 && type == PCA9450_TYPE_PCA9450A) ||
	    ((device_id >> 4) != 0x3 && type == PCA9450_TYPE_PCA9450BC)) {
		dev_err(&i2c->dev, "Device id(%x) mismatched\n",
			device_id >> 4);
		return -EINVAL;
	}

	for (i = 0; i < pca9450->rcnt; i++) {
		const struct regulator_desc *desc;
		struct regulator_dev *rdev;
		const struct pca9450_regulator_desc *r;

		r = &regulator_desc[i];
		desc = &r->desc;

		config.regmap = pca9450->regmap;
		config.dev = pca9450->dev;

		rdev = devm_regulator_register(pca9450->dev, desc, &config);
		if (IS_ERR(rdev)) {
			ret = PTR_ERR(rdev);
			dev_err(pca9450->dev,
				"Failed to register regulator(%s): %d\n",
				desc->name, ret);
			return ret;
		}
	}

	ret = devm_request_threaded_irq(pca9450->dev, pca9450->irq, NULL,
					pca9450_irq_handler,
					(IRQF_TRIGGER_FALLING | IRQF_ONESHOT),
					"pca9450-irq", pca9450);
	if (ret != 0) {
		dev_err(pca9450->dev, "Failed to request IRQ: %d\n",
			pca9450->irq);
		return ret;
	}
	/* Unmask all interrupt except PWRON/WDOG/RSVD */
	ret = regmap_update_bits(pca9450->regmap, PCA9450_REG_INT1_MSK,
				IRQ_VR_FLT1 | IRQ_VR_FLT2 | IRQ_LOWVSYS |
				IRQ_THERM_105 | IRQ_THERM_125,
				IRQ_PWRON | IRQ_WDOGB | IRQ_RSVD);
	if (ret) {
		dev_err(&i2c->dev, "Unmask irq error\n");
		return ret;
	}

	/* Clear PRESET_EN bit in BUCK123_DVS to use DVS registers */
	ret = regmap_clear_bits(pca9450->regmap, PCA9450_REG_BUCK123_DVS,
				BUCK123_PRESET_EN);
	if (ret) {
		dev_err(&i2c->dev, "Failed to clear PRESET_EN bit: %d\n", ret);
		return ret;
	}

	if (of_property_read_bool(i2c->dev.of_node, "nxp,wdog_b-warm-reset"))
		reset_ctrl = WDOG_B_CFG_WARM;
	else
		reset_ctrl = WDOG_B_CFG_COLD_LDO12;

	/* Set reset behavior on assertion of WDOG_B signal */
	ret = regmap_update_bits(pca9450->regmap, PCA9450_REG_RESET_CTRL,
				 WDOG_B_CFG_MASK, reset_ctrl);
	if (ret) {
		dev_err(&i2c->dev, "Failed to set WDOG_B reset behavior\n");
		return ret;
	}

	if (of_property_read_bool(i2c->dev.of_node, "nxp,i2c-lt-enable")) {
		/* Enable I2C Level Translator */
		ret = regmap_update_bits(pca9450->regmap, PCA9450_REG_CONFIG2,
					 I2C_LT_MASK, I2C_LT_ON_STANDBY_RUN);
		if (ret) {
			dev_err(&i2c->dev,
				"Failed to enable I2C level translator\n");
			return ret;
		}
	}

	/*
	 * The driver uses the LDO5CTRL_H register to control the LDO5 regulator.
	 * This is only valid if the SD_VSEL input of the PMIC is high. Let's
	 * check if the pin is available as GPIO and set it to high.
	 */
	pca9450->sd_vsel_gpio = gpiod_get_optional(pca9450->dev, "sd-vsel", GPIOD_OUT_HIGH);

	if (IS_ERR(pca9450->sd_vsel_gpio)) {
		dev_err(&i2c->dev, "Failed to get SD_VSEL GPIO\n");
		return PTR_ERR(pca9450->sd_vsel_gpio);
	}

	dev_info(&i2c->dev, "%s probed.\n",
		type == PCA9450_TYPE_PCA9450A ? "pca9450a" : "pca9450bc");

	return 0;
}

static const struct of_device_id pca9450_of_match[] = {
	{
		.compatible = "nxp,pca9450a",
		.data = (void *)PCA9450_TYPE_PCA9450A,
	},
	{
		.compatible = "nxp,pca9450b",
		.data = (void *)PCA9450_TYPE_PCA9450BC,
	},
	{
		.compatible = "nxp,pca9450c",
		.data = (void *)PCA9450_TYPE_PCA9450BC,
	},
	{ }
};
MODULE_DEVICE_TABLE(of, pca9450_of_match);

static struct i2c_driver pca9450_i2c_driver = {
	.driver = {
		.name = "nxp-pca9450",
		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
		.of_match_table = pca9450_of_match,
	},
	.probe = pca9450_i2c_probe,
};

module_i2c_driver(pca9450_i2c_driver);

MODULE_AUTHOR("Robin Gong <yibin.gong@nxp.com>");
MODULE_DESCRIPTION("NXP PCA9450 Power Management IC driver");
MODULE_LICENSE("GPL");