summaryrefslogtreecommitdiff
path: root/drivers/mfd/rk808.c
blob: b181fe4013303475d033a6c906059c3a4be91c21 (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
// SPDX-License-Identifier: GPL-2.0-only
/*
 * MFD core driver for Rockchip RK808/RK818
 *
 * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd
 *
 * Author: Chris Zhong <zyw@rock-chips.com>
 * Author: Zhang Qing <zhangqing@rock-chips.com>
 *
 * Copyright (C) 2016 PHYTEC Messtechnik GmbH
 *
 * Author: Wadim Egorov <w.egorov@phytec.de>
 */

#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/mfd/rk808.h>
#include <linux/mfd/core.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/regmap.h>

struct rk808_reg_data {
	int addr;
	int mask;
	int value;
};

static bool rk808_is_volatile_reg(struct device *dev, unsigned int reg)
{
	/*
	 * Notes:
	 * - Technically the ROUND_30s bit makes RTC_CTRL_REG volatile, but
	 *   we don't use that feature.  It's better to cache.
	 * - It's unlikely we care that RK808_DEVCTRL_REG is volatile since
	 *   bits are cleared in case when we shutoff anyway, but better safe.
	 */

	switch (reg) {
	case RK808_SECONDS_REG ... RK808_WEEKS_REG:
	case RK808_RTC_STATUS_REG:
	case RK808_VB_MON_REG:
	case RK808_THERMAL_REG:
	case RK808_DCDC_UV_STS_REG:
	case RK808_LDO_UV_STS_REG:
	case RK808_DCDC_PG_REG:
	case RK808_LDO_PG_REG:
	case RK808_DEVCTRL_REG:
	case RK808_INT_STS_REG1:
	case RK808_INT_STS_REG2:
		return true;
	}

	return false;
}

static bool rk817_is_volatile_reg(struct device *dev, unsigned int reg)
{
	/*
	 * Notes:
	 * - Technically the ROUND_30s bit makes RTC_CTRL_REG volatile, but
	 *   we don't use that feature.  It's better to cache.
	 */

	switch (reg) {
	case RK817_SECONDS_REG ... RK817_WEEKS_REG:
	case RK817_RTC_STATUS_REG:
	case RK817_CODEC_DTOP_LPT_SRST:
	case RK817_INT_STS_REG0:
	case RK817_INT_STS_REG1:
	case RK817_INT_STS_REG2:
	case RK817_SYS_STS:
		return true;
	}

	return true;
}

static const struct regmap_config rk818_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,
	.max_register = RK818_USB_CTRL_REG,
	.cache_type = REGCACHE_RBTREE,
	.volatile_reg = rk808_is_volatile_reg,
};

static const struct regmap_config rk805_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,
	.max_register = RK805_OFF_SOURCE_REG,
	.cache_type = REGCACHE_RBTREE,
	.volatile_reg = rk808_is_volatile_reg,
};

static const struct regmap_config rk808_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,
	.max_register = RK808_IO_POL_REG,
	.cache_type = REGCACHE_RBTREE,
	.volatile_reg = rk808_is_volatile_reg,
};

static const struct regmap_config rk817_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,
	.max_register = RK817_GPIO_INT_CFG,
	.cache_type = REGCACHE_NONE,
	.volatile_reg = rk817_is_volatile_reg,
};

static const struct resource rtc_resources[] = {
	DEFINE_RES_IRQ(RK808_IRQ_RTC_ALARM),
};

static const struct resource rk817_rtc_resources[] = {
	DEFINE_RES_IRQ(RK817_IRQ_RTC_ALARM),
};

static const struct resource rk805_key_resources[] = {
	DEFINE_RES_IRQ(RK805_IRQ_PWRON_RISE),
	DEFINE_RES_IRQ(RK805_IRQ_PWRON_FALL),
};

static const struct resource rk817_pwrkey_resources[] = {
	DEFINE_RES_IRQ(RK817_IRQ_PWRON_RISE),
	DEFINE_RES_IRQ(RK817_IRQ_PWRON_FALL),
};

static const struct mfd_cell rk805s[] = {
	{ .name = "rk808-clkout", },
	{ .name = "rk808-regulator", },
	{ .name = "rk805-pinctrl", },
	{
		.name = "rk808-rtc",
		.num_resources = ARRAY_SIZE(rtc_resources),
		.resources = &rtc_resources[0],
	},
	{	.name = "rk805-pwrkey",
		.num_resources = ARRAY_SIZE(rk805_key_resources),
		.resources = &rk805_key_resources[0],
	},
};

static const struct mfd_cell rk808s[] = {
	{ .name = "rk808-clkout", },
	{ .name = "rk808-regulator", },
	{
		.name = "rk808-rtc",
		.num_resources = ARRAY_SIZE(rtc_resources),
		.resources = rtc_resources,
	},
};

static const struct mfd_cell rk817s[] = {
	{ .name = "rk808-clkout",},
	{ .name = "rk808-regulator",},
	{
		.name = "rk805-pwrkey",
		.num_resources = ARRAY_SIZE(rk817_pwrkey_resources),
		.resources = &rk817_pwrkey_resources[0],
	},
	{
		.name = "rk808-rtc",
		.num_resources = ARRAY_SIZE(rk817_rtc_resources),
		.resources = &rk817_rtc_resources[0],
	},
	{ .name = "rk817-codec",},
};

static const struct mfd_cell rk818s[] = {
	{ .name = "rk808-clkout", },
	{ .name = "rk808-regulator", },
	{
		.name = "rk808-rtc",
		.num_resources = ARRAY_SIZE(rtc_resources),
		.resources = rtc_resources,
	},
};

static const struct rk808_reg_data rk805_pre_init_reg[] = {
	{RK805_BUCK1_CONFIG_REG, RK805_BUCK1_2_ILMAX_MASK,
				 RK805_BUCK1_2_ILMAX_4000MA},
	{RK805_BUCK2_CONFIG_REG, RK805_BUCK1_2_ILMAX_MASK,
				 RK805_BUCK1_2_ILMAX_4000MA},
	{RK805_BUCK3_CONFIG_REG, RK805_BUCK3_4_ILMAX_MASK,
				 RK805_BUCK3_ILMAX_3000MA},
	{RK805_BUCK4_CONFIG_REG, RK805_BUCK3_4_ILMAX_MASK,
				 RK805_BUCK4_ILMAX_3500MA},
	{RK805_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_400MA},
	{RK805_THERMAL_REG, TEMP_HOTDIE_MSK, TEMP115C},
};

static const struct rk808_reg_data rk808_pre_init_reg[] = {
	{ RK808_BUCK3_CONFIG_REG, BUCK_ILMIN_MASK,  BUCK_ILMIN_150MA },
	{ RK808_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK,  BUCK_ILMIN_200MA },
	{ RK808_BOOST_CONFIG_REG, BOOST_ILMIN_MASK, BOOST_ILMIN_100MA },
	{ RK808_BUCK1_CONFIG_REG, BUCK1_RATE_MASK,  BUCK_ILMIN_200MA },
	{ RK808_BUCK2_CONFIG_REG, BUCK2_RATE_MASK,  BUCK_ILMIN_200MA },
	{ RK808_DCDC_UV_ACT_REG,  BUCK_UV_ACT_MASK, BUCK_UV_ACT_DISABLE},
	{ RK808_VB_MON_REG,       MASK_ALL,         VB_LO_ACT |
						    VB_LO_SEL_3500MV },
};

static const struct rk808_reg_data rk817_pre_init_reg[] = {
	{RK817_RTC_CTRL_REG, RTC_STOP, RTC_STOP},
	/* Codec specific registers */
	{ RK817_CODEC_DTOP_VUCTL, MASK_ALL, 0x03 },
	{ RK817_CODEC_DTOP_VUCTIME, MASK_ALL, 0x00 },
	{ RK817_CODEC_DTOP_LPT_SRST, MASK_ALL, 0x00 },
	{ RK817_CODEC_DTOP_DIGEN_CLKE, MASK_ALL, 0x00 },
	/* from vendor driver, CODEC_AREF_RTCFG0 not defined in data sheet */
	{ RK817_CODEC_AREF_RTCFG0, MASK_ALL, 0x00 },
	{ RK817_CODEC_AREF_RTCFG1, MASK_ALL, 0x06 },
	{ RK817_CODEC_AADC_CFG0, MASK_ALL, 0xc8 },
	/* from vendor driver, CODEC_AADC_CFG1 not defined in data sheet */
	{ RK817_CODEC_AADC_CFG1, MASK_ALL, 0x00 },
	{ RK817_CODEC_DADC_VOLL, MASK_ALL, 0x00 },
	{ RK817_CODEC_DADC_VOLR, MASK_ALL, 0x00 },
	{ RK817_CODEC_DADC_SR_ACL0, MASK_ALL, 0x00 },
	{ RK817_CODEC_DADC_ALC1, MASK_ALL, 0x00 },
	{ RK817_CODEC_DADC_ALC2, MASK_ALL, 0x00 },
	{ RK817_CODEC_DADC_NG, MASK_ALL, 0x00 },
	{ RK817_CODEC_DADC_HPF, MASK_ALL, 0x00 },
	{ RK817_CODEC_DADC_RVOLL, MASK_ALL, 0xff },
	{ RK817_CODEC_DADC_RVOLR, MASK_ALL, 0xff },
	{ RK817_CODEC_AMIC_CFG0, MASK_ALL, 0x70 },
	{ RK817_CODEC_AMIC_CFG1, MASK_ALL, 0x00 },
	{ RK817_CODEC_DMIC_PGA_GAIN, MASK_ALL, 0x66 },
	{ RK817_CODEC_DMIC_LMT1, MASK_ALL, 0x00 },
	{ RK817_CODEC_DMIC_LMT2, MASK_ALL, 0x00 },
	{ RK817_CODEC_DMIC_NG1, MASK_ALL, 0x00 },
	{ RK817_CODEC_DMIC_NG2, MASK_ALL, 0x00 },
	/* from vendor driver, CODEC_ADAC_CFG0 not defined in data sheet */
	{ RK817_CODEC_ADAC_CFG0, MASK_ALL, 0x00 },
	{ RK817_CODEC_ADAC_CFG1, MASK_ALL, 0x07 },
	{ RK817_CODEC_DDAC_POPD_DACST, MASK_ALL, 0x82 },
	{ RK817_CODEC_DDAC_VOLL, MASK_ALL, 0x00 },
	{ RK817_CODEC_DDAC_VOLR, MASK_ALL, 0x00 },
	{ RK817_CODEC_DDAC_SR_LMT0, MASK_ALL, 0x00 },
	{ RK817_CODEC_DDAC_LMT1, MASK_ALL, 0x00 },
	{ RK817_CODEC_DDAC_LMT2, MASK_ALL, 0x00 },
	{ RK817_CODEC_DDAC_MUTE_MIXCTL, MASK_ALL, 0xa0 },
	{ RK817_CODEC_DDAC_RVOLL, MASK_ALL, 0xff },
	{ RK817_CODEC_DADC_RVOLR, MASK_ALL, 0xff },
	{ RK817_CODEC_AMIC_CFG0, MASK_ALL, 0x70 },
	{ RK817_CODEC_AMIC_CFG1, MASK_ALL, 0x00 },
	{ RK817_CODEC_DMIC_PGA_GAIN, MASK_ALL, 0x66 },
	{ RK817_CODEC_DMIC_LMT1, MASK_ALL, 0x00 },
	{ RK817_CODEC_DMIC_LMT2, MASK_ALL, 0x00 },
	{ RK817_CODEC_DMIC_NG1, MASK_ALL, 0x00 },
	{ RK817_CODEC_DMIC_NG2, MASK_ALL, 0x00 },
	/* from vendor driver, CODEC_ADAC_CFG0 not defined in data sheet */
	{ RK817_CODEC_ADAC_CFG0, MASK_ALL, 0x00 },
	{ RK817_CODEC_ADAC_CFG1, MASK_ALL, 0x07 },
	{ RK817_CODEC_DDAC_POPD_DACST, MASK_ALL, 0x82 },
	{ RK817_CODEC_DDAC_VOLL, MASK_ALL, 0x00 },
	{ RK817_CODEC_DDAC_VOLR, MASK_ALL, 0x00 },
	{ RK817_CODEC_DDAC_SR_LMT0, MASK_ALL, 0x00 },
	{ RK817_CODEC_DDAC_LMT1, MASK_ALL, 0x00 },
	{ RK817_CODEC_DDAC_LMT2, MASK_ALL, 0x00 },
	{ RK817_CODEC_DDAC_MUTE_MIXCTL, MASK_ALL, 0xa0 },
	{ RK817_CODEC_DDAC_RVOLL, MASK_ALL, 0xff },
	{ RK817_CODEC_DDAC_RVOLR, MASK_ALL, 0xff },
	{ RK817_CODEC_AHP_ANTI0, MASK_ALL, 0x00 },
	{ RK817_CODEC_AHP_ANTI1, MASK_ALL, 0x00 },
	{ RK817_CODEC_AHP_CFG0, MASK_ALL, 0xe0 },
	{ RK817_CODEC_AHP_CFG1, MASK_ALL, 0x1f },
	{ RK817_CODEC_AHP_CP, MASK_ALL, 0x09 },
	{ RK817_CODEC_ACLASSD_CFG1, MASK_ALL, 0x69 },
	{ RK817_CODEC_ACLASSD_CFG2, MASK_ALL, 0x44 },
	{ RK817_CODEC_APLL_CFG0, MASK_ALL, 0x04 },
	{ RK817_CODEC_APLL_CFG1, MASK_ALL, 0x00 },
	{ RK817_CODEC_APLL_CFG2, MASK_ALL, 0x30 },
	{ RK817_CODEC_APLL_CFG3, MASK_ALL, 0x19 },
	{ RK817_CODEC_APLL_CFG4, MASK_ALL, 0x65 },
	{ RK817_CODEC_APLL_CFG5, MASK_ALL, 0x01 },
	{ RK817_CODEC_DI2S_CKM, MASK_ALL, 0x01 },
	{ RK817_CODEC_DI2S_RSD, MASK_ALL, 0x00 },
	{ RK817_CODEC_DI2S_RXCR1, MASK_ALL, 0x00 },
	{ RK817_CODEC_DI2S_RXCR2, MASK_ALL, 0x17 },
	{ RK817_CODEC_DI2S_RXCMD_TSD, MASK_ALL, 0x00 },
	{ RK817_CODEC_DI2S_TXCR1, MASK_ALL, 0x00 },
	{ RK817_CODEC_DI2S_TXCR2, MASK_ALL, 0x17 },
	{ RK817_CODEC_DI2S_TXCR3_TXCMD, MASK_ALL, 0x00 },
	{RK817_GPIO_INT_CFG, RK817_INT_POL_MSK, RK817_INT_POL_L},
	{RK817_SYS_CFG(1), RK817_HOTDIE_TEMP_MSK | RK817_TSD_TEMP_MSK,
					   RK817_HOTDIE_105 | RK817_TSD_140},
};

static const struct rk808_reg_data rk818_pre_init_reg[] = {
	/* improve efficiency */
	{ RK818_BUCK2_CONFIG_REG, BUCK2_RATE_MASK,  BUCK_ILMIN_250MA },
	{ RK818_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK,  BUCK_ILMIN_250MA },
	{ RK818_BOOST_CONFIG_REG, BOOST_ILMIN_MASK, BOOST_ILMIN_100MA },
	{ RK818_USB_CTRL_REG,	  RK818_USB_ILIM_SEL_MASK,
						    RK818_USB_ILMIN_2000MA },
	/* close charger when usb lower then 3.4V */
	{ RK818_USB_CTRL_REG,	  RK818_USB_CHG_SD_VSEL_MASK,
						    (0x7 << 4) },
	/* no action when vref */
	{ RK818_H5V_EN_REG,	  BIT(1),	    RK818_REF_RDY_CTRL },
	/* enable HDMI 5V */
	{ RK818_H5V_EN_REG,	  BIT(0),	    RK818_H5V_EN },
	{ RK808_VB_MON_REG,	  MASK_ALL,	    VB_LO_ACT |
						    VB_LO_SEL_3500MV },
};

static const struct regmap_irq rk805_irqs[] = {
	[RK805_IRQ_PWRON_RISE] = {
		.mask = RK805_IRQ_PWRON_RISE_MSK,
		.reg_offset = 0,
	},
	[RK805_IRQ_VB_LOW] = {
		.mask = RK805_IRQ_VB_LOW_MSK,
		.reg_offset = 0,
	},
	[RK805_IRQ_PWRON] = {
		.mask = RK805_IRQ_PWRON_MSK,
		.reg_offset = 0,
	},
	[RK805_IRQ_PWRON_LP] = {
		.mask = RK805_IRQ_PWRON_LP_MSK,
		.reg_offset = 0,
	},
	[RK805_IRQ_HOTDIE] = {
		.mask = RK805_IRQ_HOTDIE_MSK,
		.reg_offset = 0,
	},
	[RK805_IRQ_RTC_ALARM] = {
		.mask = RK805_IRQ_RTC_ALARM_MSK,
		.reg_offset = 0,
	},
	[RK805_IRQ_RTC_PERIOD] = {
		.mask = RK805_IRQ_RTC_PERIOD_MSK,
		.reg_offset = 0,
	},
	[RK805_IRQ_PWRON_FALL] = {
		.mask = RK805_IRQ_PWRON_FALL_MSK,
		.reg_offset = 0,
	},
};

static const struct regmap_irq rk808_irqs[] = {
	/* INT_STS */
	[RK808_IRQ_VOUT_LO] = {
		.mask = RK808_IRQ_VOUT_LO_MSK,
		.reg_offset = 0,
	},
	[RK808_IRQ_VB_LO] = {
		.mask = RK808_IRQ_VB_LO_MSK,
		.reg_offset = 0,
	},
	[RK808_IRQ_PWRON] = {
		.mask = RK808_IRQ_PWRON_MSK,
		.reg_offset = 0,
	},
	[RK808_IRQ_PWRON_LP] = {
		.mask = RK808_IRQ_PWRON_LP_MSK,
		.reg_offset = 0,
	},
	[RK808_IRQ_HOTDIE] = {
		.mask = RK808_IRQ_HOTDIE_MSK,
		.reg_offset = 0,
	},
	[RK808_IRQ_RTC_ALARM] = {
		.mask = RK808_IRQ_RTC_ALARM_MSK,
		.reg_offset = 0,
	},
	[RK808_IRQ_RTC_PERIOD] = {
		.mask = RK808_IRQ_RTC_PERIOD_MSK,
		.reg_offset = 0,
	},

	/* INT_STS2 */
	[RK808_IRQ_PLUG_IN_INT] = {
		.mask = RK808_IRQ_PLUG_IN_INT_MSK,
		.reg_offset = 1,
	},
	[RK808_IRQ_PLUG_OUT_INT] = {
		.mask = RK808_IRQ_PLUG_OUT_INT_MSK,
		.reg_offset = 1,
	},
};

static const struct regmap_irq rk818_irqs[] = {
	/* INT_STS */
	[RK818_IRQ_VOUT_LO] = {
		.mask = RK818_IRQ_VOUT_LO_MSK,
		.reg_offset = 0,
	},
	[RK818_IRQ_VB_LO] = {
		.mask = RK818_IRQ_VB_LO_MSK,
		.reg_offset = 0,
	},
	[RK818_IRQ_PWRON] = {
		.mask = RK818_IRQ_PWRON_MSK,
		.reg_offset = 0,
	},
	[RK818_IRQ_PWRON_LP] = {
		.mask = RK818_IRQ_PWRON_LP_MSK,
		.reg_offset = 0,
	},
	[RK818_IRQ_HOTDIE] = {
		.mask = RK818_IRQ_HOTDIE_MSK,
		.reg_offset = 0,
	},
	[RK818_IRQ_RTC_ALARM] = {
		.mask = RK818_IRQ_RTC_ALARM_MSK,
		.reg_offset = 0,
	},
	[RK818_IRQ_RTC_PERIOD] = {
		.mask = RK818_IRQ_RTC_PERIOD_MSK,
		.reg_offset = 0,
	},
	[RK818_IRQ_USB_OV] = {
		.mask = RK818_IRQ_USB_OV_MSK,
		.reg_offset = 0,
	},

	/* INT_STS2 */
	[RK818_IRQ_PLUG_IN] = {
		.mask = RK818_IRQ_PLUG_IN_MSK,
		.reg_offset = 1,
	},
	[RK818_IRQ_PLUG_OUT] = {
		.mask = RK818_IRQ_PLUG_OUT_MSK,
		.reg_offset = 1,
	},
	[RK818_IRQ_CHG_OK] = {
		.mask = RK818_IRQ_CHG_OK_MSK,
		.reg_offset = 1,
	},
	[RK818_IRQ_CHG_TE] = {
		.mask = RK818_IRQ_CHG_TE_MSK,
		.reg_offset = 1,
	},
	[RK818_IRQ_CHG_TS1] = {
		.mask = RK818_IRQ_CHG_TS1_MSK,
		.reg_offset = 1,
	},
	[RK818_IRQ_TS2] = {
		.mask = RK818_IRQ_TS2_MSK,
		.reg_offset = 1,
	},
	[RK818_IRQ_CHG_CVTLIM] = {
		.mask = RK818_IRQ_CHG_CVTLIM_MSK,
		.reg_offset = 1,
	},
	[RK818_IRQ_DISCHG_ILIM] = {
		.mask = RK818_IRQ_DISCHG_ILIM_MSK,
		.reg_offset = 1,
	},
};

static const struct regmap_irq rk817_irqs[RK817_IRQ_END] = {
	REGMAP_IRQ_REG_LINE(0, 8),
	REGMAP_IRQ_REG_LINE(1, 8),
	REGMAP_IRQ_REG_LINE(2, 8),
	REGMAP_IRQ_REG_LINE(3, 8),
	REGMAP_IRQ_REG_LINE(4, 8),
	REGMAP_IRQ_REG_LINE(5, 8),
	REGMAP_IRQ_REG_LINE(6, 8),
	REGMAP_IRQ_REG_LINE(7, 8),
	REGMAP_IRQ_REG_LINE(8, 8),
	REGMAP_IRQ_REG_LINE(9, 8),
	REGMAP_IRQ_REG_LINE(10, 8),
	REGMAP_IRQ_REG_LINE(11, 8),
	REGMAP_IRQ_REG_LINE(12, 8),
	REGMAP_IRQ_REG_LINE(13, 8),
	REGMAP_IRQ_REG_LINE(14, 8),
	REGMAP_IRQ_REG_LINE(15, 8),
	REGMAP_IRQ_REG_LINE(16, 8),
	REGMAP_IRQ_REG_LINE(17, 8),
	REGMAP_IRQ_REG_LINE(18, 8),
	REGMAP_IRQ_REG_LINE(19, 8),
	REGMAP_IRQ_REG_LINE(20, 8),
	REGMAP_IRQ_REG_LINE(21, 8),
	REGMAP_IRQ_REG_LINE(22, 8),
	REGMAP_IRQ_REG_LINE(23, 8)
};

static struct regmap_irq_chip rk805_irq_chip = {
	.name = "rk805",
	.irqs = rk805_irqs,
	.num_irqs = ARRAY_SIZE(rk805_irqs),
	.num_regs = 1,
	.status_base = RK805_INT_STS_REG,
	.mask_base = RK805_INT_STS_MSK_REG,
	.ack_base = RK805_INT_STS_REG,
	.init_ack_masked = true,
};

static const struct regmap_irq_chip rk808_irq_chip = {
	.name = "rk808",
	.irqs = rk808_irqs,
	.num_irqs = ARRAY_SIZE(rk808_irqs),
	.num_regs = 2,
	.irq_reg_stride = 2,
	.status_base = RK808_INT_STS_REG1,
	.mask_base = RK808_INT_STS_MSK_REG1,
	.ack_base = RK808_INT_STS_REG1,
	.init_ack_masked = true,
};

static struct regmap_irq_chip rk817_irq_chip = {
	.name = "rk817",
	.irqs = rk817_irqs,
	.num_irqs = ARRAY_SIZE(rk817_irqs),
	.num_regs = 3,
	.irq_reg_stride = 2,
	.status_base = RK817_INT_STS_REG0,
	.mask_base = RK817_INT_STS_MSK_REG0,
	.ack_base = RK817_INT_STS_REG0,
	.init_ack_masked = true,
};

static const struct regmap_irq_chip rk818_irq_chip = {
	.name = "rk818",
	.irqs = rk818_irqs,
	.num_irqs = ARRAY_SIZE(rk818_irqs),
	.num_regs = 2,
	.irq_reg_stride = 2,
	.status_base = RK818_INT_STS_REG1,
	.mask_base = RK818_INT_STS_MSK_REG1,
	.ack_base = RK818_INT_STS_REG1,
	.init_ack_masked = true,
};

static struct i2c_client *rk808_i2c_client;

static void rk808_pm_power_off(void)
{
	int ret;
	unsigned int reg, bit;
	struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);

	switch (rk808->variant) {
	case RK805_ID:
		reg = RK805_DEV_CTRL_REG;
		bit = DEV_OFF;
		break;
	case RK808_ID:
		reg = RK808_DEVCTRL_REG,
		bit = DEV_OFF_RST;
		break;
	case RK817_ID:
		reg = RK817_SYS_CFG(3);
		bit = DEV_OFF;
		break;
	case RK818_ID:
		reg = RK818_DEVCTRL_REG;
		bit = DEV_OFF;
		break;
	default:
		return;
	}
	ret = regmap_update_bits(rk808->regmap, reg, bit, bit);
	if (ret)
		dev_err(&rk808_i2c_client->dev, "Failed to shutdown device!\n");
}

static void rk8xx_shutdown(struct i2c_client *client)
{
	struct rk808 *rk808 = i2c_get_clientdata(client);
	int ret;

	switch (rk808->variant) {
	case RK805_ID:
		ret = regmap_update_bits(rk808->regmap,
					 RK805_GPIO_IO_POL_REG,
					 SLP_SD_MSK,
					 SHUTDOWN_FUN);
		break;
	case RK809_ID:
	case RK817_ID:
		ret = regmap_update_bits(rk808->regmap,
					 RK817_SYS_CFG(3),
					 RK817_SLPPIN_FUNC_MSK,
					 SLPPIN_DN_FUN);
		break;
	default:
		return;
	}
	if (ret)
		dev_warn(&client->dev,
			 "Cannot switch to power down function\n");
}

static const struct of_device_id rk808_of_match[] = {
	{ .compatible = "rockchip,rk805" },
	{ .compatible = "rockchip,rk808" },
	{ .compatible = "rockchip,rk809" },
	{ .compatible = "rockchip,rk817" },
	{ .compatible = "rockchip,rk818" },
	{ },
};
MODULE_DEVICE_TABLE(of, rk808_of_match);

static int rk808_probe(struct i2c_client *client,
		       const struct i2c_device_id *id)
{
	struct device_node *np = client->dev.of_node;
	struct rk808 *rk808;
	const struct rk808_reg_data *pre_init_reg;
	const struct mfd_cell *cells;
	int nr_pre_init_regs;
	int nr_cells;
	int msb, lsb;
	unsigned char pmic_id_msb, pmic_id_lsb;
	int ret;
	int i;

	rk808 = devm_kzalloc(&client->dev, sizeof(*rk808), GFP_KERNEL);
	if (!rk808)
		return -ENOMEM;

	if (of_device_is_compatible(np, "rockchip,rk817") ||
	    of_device_is_compatible(np, "rockchip,rk809")) {
		pmic_id_msb = RK817_ID_MSB;
		pmic_id_lsb = RK817_ID_LSB;
	} else {
		pmic_id_msb = RK808_ID_MSB;
		pmic_id_lsb = RK808_ID_LSB;
	}

	/* Read chip variant */
	msb = i2c_smbus_read_byte_data(client, pmic_id_msb);
	if (msb < 0) {
		dev_err(&client->dev, "failed to read the chip id at 0x%x\n",
			RK808_ID_MSB);
		return msb;
	}

	lsb = i2c_smbus_read_byte_data(client, pmic_id_lsb);
	if (lsb < 0) {
		dev_err(&client->dev, "failed to read the chip id at 0x%x\n",
			RK808_ID_LSB);
		return lsb;
	}

	rk808->variant = ((msb << 8) | lsb) & RK8XX_ID_MSK;
	dev_info(&client->dev, "chip id: 0x%x\n", (unsigned int)rk808->variant);

	switch (rk808->variant) {
	case RK805_ID:
		rk808->regmap_cfg = &rk805_regmap_config;
		rk808->regmap_irq_chip = &rk805_irq_chip;
		pre_init_reg = rk805_pre_init_reg;
		nr_pre_init_regs = ARRAY_SIZE(rk805_pre_init_reg);
		cells = rk805s;
		nr_cells = ARRAY_SIZE(rk805s);
		break;
	case RK808_ID:
		rk808->regmap_cfg = &rk808_regmap_config;
		rk808->regmap_irq_chip = &rk808_irq_chip;
		pre_init_reg = rk808_pre_init_reg;
		nr_pre_init_regs = ARRAY_SIZE(rk808_pre_init_reg);
		cells = rk808s;
		nr_cells = ARRAY_SIZE(rk808s);
		break;
	case RK818_ID:
		rk808->regmap_cfg = &rk818_regmap_config;
		rk808->regmap_irq_chip = &rk818_irq_chip;
		pre_init_reg = rk818_pre_init_reg;
		nr_pre_init_regs = ARRAY_SIZE(rk818_pre_init_reg);
		cells = rk818s;
		nr_cells = ARRAY_SIZE(rk818s);
		break;
	case RK809_ID:
	case RK817_ID:
		rk808->regmap_cfg = &rk817_regmap_config;
		rk808->regmap_irq_chip = &rk817_irq_chip;
		pre_init_reg = rk817_pre_init_reg;
		nr_pre_init_regs = ARRAY_SIZE(rk817_pre_init_reg);
		cells = rk817s;
		nr_cells = ARRAY_SIZE(rk817s);
		break;
	default:
		dev_err(&client->dev, "Unsupported RK8XX ID %lu\n",
			rk808->variant);
		return -EINVAL;
	}

	rk808->i2c = client;
	i2c_set_clientdata(client, rk808);

	rk808->regmap = devm_regmap_init_i2c(client, rk808->regmap_cfg);
	if (IS_ERR(rk808->regmap)) {
		dev_err(&client->dev, "regmap initialization failed\n");
		return PTR_ERR(rk808->regmap);
	}

	if (!client->irq) {
		dev_err(&client->dev, "No interrupt support, no core IRQ\n");
		return -EINVAL;
	}

	ret = regmap_add_irq_chip(rk808->regmap, client->irq,
				  IRQF_ONESHOT, -1,
				  rk808->regmap_irq_chip, &rk808->irq_data);
	if (ret) {
		dev_err(&client->dev, "Failed to add irq_chip %d\n", ret);
		return ret;
	}

	for (i = 0; i < nr_pre_init_regs; i++) {
		ret = regmap_update_bits(rk808->regmap,
					pre_init_reg[i].addr,
					pre_init_reg[i].mask,
					pre_init_reg[i].value);
		if (ret) {
			dev_err(&client->dev,
				"0x%x write err\n",
				pre_init_reg[i].addr);
			return ret;
		}
	}

	ret = devm_mfd_add_devices(&client->dev, PLATFORM_DEVID_NONE,
			      cells, nr_cells, NULL, 0,
			      regmap_irq_get_domain(rk808->irq_data));
	if (ret) {
		dev_err(&client->dev, "failed to add MFD devices %d\n", ret);
		goto err_irq;
	}

	if (of_property_read_bool(np, "rockchip,system-power-controller")) {
		rk808_i2c_client = client;
		pm_power_off = rk808_pm_power_off;
	}

	return 0;

err_irq:
	regmap_del_irq_chip(client->irq, rk808->irq_data);
	return ret;
}

static int rk808_remove(struct i2c_client *client)
{
	struct rk808 *rk808 = i2c_get_clientdata(client);

	regmap_del_irq_chip(client->irq, rk808->irq_data);

	/**
	 * pm_power_off may points to a function from another module.
	 * Check if the pointer is set by us and only then overwrite it.
	 */
	if (pm_power_off == rk808_pm_power_off)
		pm_power_off = NULL;

	return 0;
}

static int __maybe_unused rk8xx_suspend(struct device *dev)
{
	struct rk808 *rk808 = i2c_get_clientdata(to_i2c_client(dev));
	int ret = 0;

	switch (rk808->variant) {
	case RK805_ID:
		ret = regmap_update_bits(rk808->regmap,
					 RK805_GPIO_IO_POL_REG,
					 SLP_SD_MSK,
					 SLEEP_FUN);
		break;
	case RK809_ID:
	case RK817_ID:
		ret = regmap_update_bits(rk808->regmap,
					 RK817_SYS_CFG(3),
					 RK817_SLPPIN_FUNC_MSK,
					 SLPPIN_SLP_FUN);
		break;
	default:
		break;
	}

	return ret;
}

static int __maybe_unused rk8xx_resume(struct device *dev)
{
	struct rk808 *rk808 = i2c_get_clientdata(to_i2c_client(dev));
	int ret = 0;

	switch (rk808->variant) {
	case RK809_ID:
	case RK817_ID:
		ret = regmap_update_bits(rk808->regmap,
					 RK817_SYS_CFG(3),
					 RK817_SLPPIN_FUNC_MSK,
					 SLPPIN_NULL_FUN);
		break;
	default:
		break;
	}

	return ret;
}
static SIMPLE_DEV_PM_OPS(rk8xx_pm_ops, rk8xx_suspend, rk8xx_resume);

static struct i2c_driver rk808_i2c_driver = {
	.driver = {
		.name = "rk808",
		.of_match_table = rk808_of_match,
		.pm = &rk8xx_pm_ops,
	},
	.probe    = rk808_probe,
	.remove   = rk808_remove,
	.shutdown = rk8xx_shutdown,
};

module_i2c_driver(rk808_i2c_driver);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Chris Zhong <zyw@rock-chips.com>");
MODULE_AUTHOR("Zhang Qing <zhangqing@rock-chips.com>");
MODULE_AUTHOR("Wadim Egorov <w.egorov@phytec.de>");
MODULE_DESCRIPTION("RK808/RK818 PMIC driver");