summaryrefslogtreecommitdiffstats
path: root/drivers/mfd/88pm860x-core.c
blob: 17dfe9bb6d2745c2bb5f6123b1afbc6c6d997ca6 (plain) (blame)
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
/*
 * Base driver for Marvell 88PM8607
 *
 * Copyright (C) 2009 Marvell International Ltd.
 * 	Haojian Zhuang <haojian.zhuang@marvell.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/mfd/core.h>
#include <linux/mfd/88pm860x.h>
#include <linux/regulator/machine.h>

#define INT_STATUS_NUM			3

static struct resource bk_resources[] __devinitdata = {
	{PM8606_BACKLIGHT1, PM8606_BACKLIGHT1, "backlight-0", IORESOURCE_IO,},
	{PM8606_BACKLIGHT2, PM8606_BACKLIGHT2, "backlight-1", IORESOURCE_IO,},
	{PM8606_BACKLIGHT3, PM8606_BACKLIGHT3, "backlight-2", IORESOURCE_IO,},
};

static struct resource led_resources[] __devinitdata = {
	{PM8606_LED1_RED,   PM8606_LED1_RED,   "led0-red",   IORESOURCE_IO,},
	{PM8606_LED1_GREEN, PM8606_LED1_GREEN, "led0-green", IORESOURCE_IO,},
	{PM8606_LED1_BLUE,  PM8606_LED1_BLUE,  "led0-blue",  IORESOURCE_IO,},
	{PM8606_LED2_RED,   PM8606_LED2_RED,   "led1-red",   IORESOURCE_IO,},
	{PM8606_LED2_GREEN, PM8606_LED2_GREEN, "led1-green", IORESOURCE_IO,},
	{PM8606_LED2_BLUE,  PM8606_LED2_BLUE,  "led1-blue",  IORESOURCE_IO,},
};

static struct resource regulator_resources[] __devinitdata = {
	{PM8607_ID_BUCK1, PM8607_ID_BUCK1, "buck-1", IORESOURCE_IO,},
	{PM8607_ID_BUCK2, PM8607_ID_BUCK2, "buck-2", IORESOURCE_IO,},
	{PM8607_ID_BUCK3, PM8607_ID_BUCK3, "buck-3", IORESOURCE_IO,},
	{PM8607_ID_LDO1,  PM8607_ID_LDO1,  "ldo-01", IORESOURCE_IO,},
	{PM8607_ID_LDO2,  PM8607_ID_LDO2,  "ldo-02", IORESOURCE_IO,},
	{PM8607_ID_LDO3,  PM8607_ID_LDO3,  "ldo-03", IORESOURCE_IO,},
	{PM8607_ID_LDO4,  PM8607_ID_LDO4,  "ldo-04", IORESOURCE_IO,},
	{PM8607_ID_LDO5,  PM8607_ID_LDO5,  "ldo-05", IORESOURCE_IO,},
	{PM8607_ID_LDO6,  PM8607_ID_LDO6,  "ldo-06", IORESOURCE_IO,},
	{PM8607_ID_LDO7,  PM8607_ID_LDO7,  "ldo-07", IORESOURCE_IO,},
	{PM8607_ID_LDO8,  PM8607_ID_LDO8,  "ldo-08", IORESOURCE_IO,},
	{PM8607_ID_LDO9,  PM8607_ID_LDO9,  "ldo-09", IORESOURCE_IO,},
	{PM8607_ID_LDO10, PM8607_ID_LDO10, "ldo-10", IORESOURCE_IO,},
	{PM8607_ID_LDO11, PM8607_ID_LDO11, "ldo-11", IORESOURCE_IO,},
	{PM8607_ID_LDO12, PM8607_ID_LDO12, "ldo-12", IORESOURCE_IO,},
	{PM8607_ID_LDO13, PM8607_ID_LDO13, "ldo-13", IORESOURCE_IO,},
	{PM8607_ID_LDO14, PM8607_ID_LDO14, "ldo-14", IORESOURCE_IO,},
	{PM8607_ID_LDO15, PM8607_ID_LDO15, "ldo-15", IORESOURCE_IO,},
};

static struct resource touch_resources[] __devinitdata = {
	{PM8607_IRQ_PEN, PM8607_IRQ_PEN, "touch", IORESOURCE_IRQ,},
};

static struct resource onkey_resources[] __devinitdata = {
	{PM8607_IRQ_ONKEY, PM8607_IRQ_ONKEY, "onkey", IORESOURCE_IRQ,},
};

static struct resource codec_resources[] __devinitdata = {
	/* Headset microphone insertion or removal */
	{PM8607_IRQ_MICIN,   PM8607_IRQ_MICIN,   "micin",   IORESOURCE_IRQ,},
	/* Hook-switch press or release */
	{PM8607_IRQ_HOOK,    PM8607_IRQ_HOOK,    "hook",    IORESOURCE_IRQ,},
	/* Headset insertion or removal */
	{PM8607_IRQ_HEADSET, PM8607_IRQ_HEADSET, "headset", IORESOURCE_IRQ,},
	/* Audio short */
	{PM8607_IRQ_AUDIO_SHORT, PM8607_IRQ_AUDIO_SHORT, "audio-short", IORESOURCE_IRQ,},
};

static struct resource battery_resources[] __devinitdata = {
	{PM8607_IRQ_CC,  PM8607_IRQ_CC,  "columb counter", IORESOURCE_IRQ,},
	{PM8607_IRQ_BAT, PM8607_IRQ_BAT, "battery",        IORESOURCE_IRQ,},
};

static struct resource charger_resources[] __devinitdata = {
	{PM8607_IRQ_CHG,  PM8607_IRQ_CHG,  "charger detect",  IORESOURCE_IRQ,},
	{PM8607_IRQ_CHG_DONE,  PM8607_IRQ_CHG_DONE,  "charging done",       IORESOURCE_IRQ,},
	{PM8607_IRQ_CHG_FAULT, PM8607_IRQ_CHG_FAULT, "charging timeout",    IORESOURCE_IRQ,},
	{PM8607_IRQ_GPADC1,    PM8607_IRQ_GPADC1,    "battery temperature", IORESOURCE_IRQ,},
	{PM8607_IRQ_VBAT, PM8607_IRQ_VBAT, "battery voltage", IORESOURCE_IRQ,},
	{PM8607_IRQ_VCHG, PM8607_IRQ_VCHG, "vchg voltage",    IORESOURCE_IRQ,},
};

static struct resource rtc_resources[] __devinitdata = {
	{PM8607_IRQ_RTC, PM8607_IRQ_RTC, "rtc", IORESOURCE_IRQ,},
};

static struct mfd_cell bk_devs[] = {
	{"88pm860x-backlight", 0,},
	{"88pm860x-backlight", 1,},
	{"88pm860x-backlight", 2,},
};

static struct mfd_cell led_devs[] = {
	{"88pm860x-led", 0,},
	{"88pm860x-led", 1,},
	{"88pm860x-led", 2,},
	{"88pm860x-led", 3,},
	{"88pm860x-led", 4,},
	{"88pm860x-led", 5,},
};

static struct mfd_cell regulator_devs[] = {
	{"88pm860x-regulator", 0,},
	{"88pm860x-regulator", 1,},
	{"88pm860x-regulator", 2,},
	{"88pm860x-regulator", 3,},
	{"88pm860x-regulator", 4,},
	{"88pm860x-regulator", 5,},
	{"88pm860x-regulator", 6,},
	{"88pm860x-regulator", 7,},
	{"88pm860x-regulator", 8,},
	{"88pm860x-regulator", 9,},
	{"88pm860x-regulator", 10,},
	{"88pm860x-regulator", 11,},
	{"88pm860x-regulator", 12,},
	{"88pm860x-regulator", 13,},
	{"88pm860x-regulator", 14,},
	{"88pm860x-regulator", 15,},
	{"88pm860x-regulator", 16,},
	{"88pm860x-regulator", 17,},
};

static struct mfd_cell touch_devs[] = {
	{"88pm860x-touch", -1,},
};

static struct mfd_cell onkey_devs[] = {
	{"88pm860x-onkey", -1,},
};

static struct mfd_cell codec_devs[] = {
	{"88pm860x-codec", -1,},
};

static struct mfd_cell power_devs[] = {
	{"88pm860x-battery", -1,},
	{"88pm860x-charger", -1,},
};

static struct mfd_cell rtc_devs[] = {
	{"88pm860x-rtc", -1,},
};


struct pm860x_irq_data {
	int	reg;
	int	mask_reg;
	int	enable;		/* enable or not */
	int	offs;		/* bit offset in mask register */
};

static struct pm860x_irq_data pm860x_irqs[] = {
	[PM8607_IRQ_ONKEY] = {
		.reg		= PM8607_INT_STATUS1,
		.mask_reg	= PM8607_INT_MASK_1,
		.offs		= 1 << 0,
	},
	[PM8607_IRQ_EXTON] = {
		.reg		= PM8607_INT_STATUS1,
		.mask_reg	= PM8607_INT_MASK_1,
		.offs		= 1 << 1,
	},
	[PM8607_IRQ_CHG] = {
		.reg		= PM8607_INT_STATUS1,
		.mask_reg	= PM8607_INT_MASK_1,
		.offs		= 1 << 2,
	},
	[PM8607_IRQ_BAT] = {
		.reg		= PM8607_INT_STATUS1,
		.mask_reg	= PM8607_INT_MASK_1,
		.offs		= 1 << 3,
	},
	[PM8607_IRQ_RTC] = {
		.reg		= PM8607_INT_STATUS1,
		.mask_reg	= PM8607_INT_MASK_1,
		.offs		= 1 << 4,
	},
	[PM8607_IRQ_CC] = {
		.reg		= PM8607_INT_STATUS1,
		.mask_reg	= PM8607_INT_MASK_1,
		.offs		= 1 << 5,
	},
	[PM8607_IRQ_VBAT] = {
		.reg		= PM8607_INT_STATUS2,
		.mask_reg	= PM8607_INT_MASK_2,
		.offs		= 1 << 0,
	},
	[PM8607_IRQ_VCHG] = {
		.reg		= PM8607_INT_STATUS2,
		.mask_reg	= PM8607_INT_MASK_2,
		.offs		= 1 << 1,
	},
	[PM8607_IRQ_VSYS] = {
		.reg		= PM8607_INT_STATUS2,
		.mask_reg	= PM8607_INT_MASK_2,
		.offs		= 1 << 2,
	},
	[PM8607_IRQ_TINT] = {
		.reg		= PM8607_INT_STATUS2,
		.mask_reg	= PM8607_INT_MASK_2,
		.offs		= 1 << 3,
	},
	[PM8607_IRQ_GPADC0] = {
		.reg		= PM8607_INT_STATUS2,
		.mask_reg	= PM8607_INT_MASK_2,
		.offs		= 1 << 4,
	},
	[PM8607_IRQ_GPADC1] = {
		.reg		= PM8607_INT_STATUS2,
		.mask_reg	= PM8607_INT_MASK_2,
		.offs		= 1 << 5,
	},
	[PM8607_IRQ_GPADC2] = {
		.reg		= PM8607_INT_STATUS2,
		.mask_reg	= PM8607_INT_MASK_2,
		.offs		= 1 << 6,
	},
	[PM8607_IRQ_GPADC3] = {
		.reg		= PM8607_INT_STATUS2,
		.mask_reg	= PM8607_INT_MASK_2,
		.offs		= 1 << 7,
	},
	[PM8607_IRQ_AUDIO_SHORT] = {
		.reg		= PM8607_INT_STATUS3,
		.mask_reg	= PM8607_INT_MASK_3,
		.offs		= 1 << 0,
	},
	[PM8607_IRQ_PEN] = {
		.reg		= PM8607_INT_STATUS3,
		.mask_reg	= PM8607_INT_MASK_3,
		.offs		= 1 << 1,
	},
	[PM8607_IRQ_HEADSET] = {
		.reg		= PM8607_INT_STATUS3,
		.mask_reg	= PM8607_INT_MASK_3,
		.offs		= 1 << 2,
	},
	[PM8607_IRQ_HOOK] = {
		.reg		= PM8607_INT_STATUS3,
		.mask_reg	= PM8607_INT_MASK_3,
		.offs		= 1 << 3,
	},
	[PM8607_IRQ_MICIN] = {
		.reg		= PM8607_INT_STATUS3,
		.mask_reg	= PM8607_INT_MASK_3,
		.offs		= 1 << 4,
	},
	[PM8607_IRQ_CHG_FAIL] = {
		.reg		= PM8607_INT_STATUS3,
		.mask_reg	= PM8607_INT_MASK_3,
		.offs		= 1 << 5,
	},
	[PM8607_IRQ_CHG_DONE] = {
		.reg		= PM8607_INT_STATUS3,
		.mask_reg	= PM8607_INT_MASK_3,
		.offs		= 1 << 6,
	},
	[PM8607_IRQ_CHG_FAULT] = {
		.reg		= PM8607_INT_STATUS3,
		.mask_reg	= PM8607_INT_MASK_3,
		.offs		= 1 << 7,
	},
};

static irqreturn_t pm860x_irq(int irq, void *data)
{
	struct pm860x_chip *chip = data;
	struct pm860x_irq_data *irq_data;
	struct i2c_client *i2c;
	int read_reg = -1, value = 0;
	int i;

	i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion;
	for (i = 0; i < ARRAY_SIZE(pm860x_irqs); i++) {
		irq_data = &pm860x_irqs[i];
		if (read_reg != irq_data->reg) {
			read_reg = irq_data->reg;
			value = pm860x_reg_read(i2c, irq_data->reg);
		}
		if (value & irq_data->enable)
			handle_nested_irq(chip->irq_base + i);
	}
	return IRQ_HANDLED;
}

static void pm860x_irq_lock(struct irq_data *data)
{
	struct pm860x_chip *chip = irq_data_get_irq_chip_data(data);

	mutex_lock(&chip->irq_lock);
}

static void pm860x_irq_sync_unlock(struct irq_data *data)
{
	struct pm860x_chip *chip = irq_data_get_irq_chip_data(data);
	struct pm860x_irq_data *irq_data;
	struct i2c_client *i2c;
	static unsigned char cached[3] = {0x0, 0x0, 0x0};
	unsigned char mask[3];
	int i;

	i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion;
	/* Load cached value. In initial, all IRQs are masked */
	for (i = 0; i < 3; i++)
		mask[i] = cached[i];
	for (i = 0; i < ARRAY_SIZE(pm860x_irqs); i++) {
		irq_data = &pm860x_irqs[i];
		switch (irq_data->mask_reg) {
		case PM8607_INT_MASK_1:
			mask[0] &= ~irq_data->offs;
			mask[0] |= irq_data->enable;
			break;
		case PM8607_INT_MASK_2:
			mask[1] &= ~irq_data->offs;
			mask[1] |= irq_data->enable;
			break;
		case PM8607_INT_MASK_3:
			mask[2] &= ~irq_data->offs;
			mask[2] |= irq_data->enable;
			break;
		default:
			dev_err(chip->dev, "wrong IRQ\n");
			break;
		}
	}
	/* update mask into registers */
	for (i = 0; i < 3; i++) {
		if (mask[i] != cached[i]) {
			cached[i] = mask[i];
			pm860x_reg_write(i2c, PM8607_INT_MASK_1 + i, mask[i]);
		}
	}

	mutex_unlock(&chip->irq_lock);
}

static void pm860x_irq_enable(struct irq_data *data)
{
	struct pm860x_chip *chip = irq_data_get_irq_chip_data(data);
	pm860x_irqs[data->irq - chip->irq_base].enable
		= pm860x_irqs[data->irq - chip->irq_base].offs;
}

static void pm860x_irq_disable(struct irq_data *data)
{
	struct pm860x_chip *chip = irq_data_get_irq_chip_data(data);
	pm860x_irqs[data->irq - chip->irq_base].enable = 0;
}

static struct irq_chip pm860x_irq_chip = {
	.name		= "88pm860x",
	.irq_bus_lock	= pm860x_irq_lock,
	.irq_bus_sync_unlock = pm860x_irq_sync_unlock,
	.irq_enable	= pm860x_irq_enable,
	.irq_disable	= pm860x_irq_disable,
};

static int __devinit device_gpadc_init(struct pm860x_chip *chip,
				       struct pm860x_platform_data *pdata)
{
	struct i2c_client *i2c = (chip->id == CHIP_PM8607) ? chip->client \
				: chip->companion;
	int data;
	int ret;

	/* initialize GPADC without activating it */

	if (!pdata || !pdata->touch)
		return -EINVAL;

	/* set GPADC MISC1 register */
	data = 0;
	data |= (pdata->touch->gpadc_prebias << 1) & PM8607_GPADC_PREBIAS_MASK;
	data |= (pdata->touch->slot_cycle << 3) & PM8607_GPADC_SLOT_CYCLE_MASK;
	data |= (pdata->touch->off_scale << 5) & PM8607_GPADC_OFF_SCALE_MASK;
	data |= (pdata->touch->sw_cal << 7) & PM8607_GPADC_SW_CAL_MASK;
	if (data) {
		ret = pm860x_reg_write(i2c, PM8607_GPADC_MISC1, data);
		if (ret < 0)
			goto out;
	}
	/* set tsi prebias time */
	if (pdata->touch->tsi_prebias) {
		data = pdata->touch->tsi_prebias;
		ret = pm860x_reg_write(i2c, PM8607_TSI_PREBIAS, data);
		if (ret < 0)
			goto out;
	}
	/* set prebias & prechg time of pen detect */
	data = 0;
	data |= pdata->touch->pen_prebias & PM8607_PD_PREBIAS_MASK;
	data |= (pdata->touch->pen_prechg << 5) & PM8607_PD_PRECHG_MASK;
	if (data) {
		ret = pm860x_reg_write(i2c, PM8607_PD_PREBIAS, data);
		if (ret < 0)
			goto out;
	}

	ret = pm860x_set_bits(i2c, PM8607_GPADC_MISC1,
			      PM8607_GPADC_EN, PM8607_GPADC_EN);
out:
	return ret;
}

static int __devinit device_irq_init(struct pm860x_chip *chip,
				     struct pm860x_platform_data *pdata)
{
	struct i2c_client *i2c = (chip->id == CHIP_PM8607) ? chip->client \
				: chip->companion;
	unsigned char status_buf[INT_STATUS_NUM];
	unsigned long flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT;
	int i, data, mask, ret = -EINVAL;
	int __irq;

	if (!pdata || !pdata->irq_base) {
		dev_warn(chip->dev, "No interrupt support on IRQ base\n");
		return -EINVAL;
	}

	mask = PM8607_B0_MISC1_INV_INT | PM8607_B0_MISC1_INT_CLEAR
		| PM8607_B0_MISC1_INT_MASK;
	data = 0;
	chip->irq_mode = 0;
	if (pdata && pdata->irq_mode) {
		/*
		 * irq_mode defines the way of clearing interrupt. If it's 1,
		 * clear IRQ by write. Otherwise, clear it by read.
		 * This control bit is valid from 88PM8607 B0 steping.
		 */
		data |= PM8607_B0_MISC1_INT_CLEAR;
		chip->irq_mode = 1;
	}
	ret = pm860x_set_bits(i2c, PM8607_B0_MISC1, mask, data);
	if (ret < 0)
		goto out;

	/* mask all IRQs */
	memset(status_buf, 0, INT_STATUS_NUM);
	ret = pm860x_bulk_write(i2c, PM8607_INT_MASK_1,
				INT_STATUS_NUM, status_buf);
	if (ret < 0)
		goto out;

	if (chip->irq_mode) {
		/* clear interrupt status by write */
		memset(status_buf, 0xFF, INT_STATUS_NUM);
		ret = pm860x_bulk_write(i2c, PM8607_INT_STATUS1,
					INT_STATUS_NUM, status_buf);
	} else {
		/* clear interrupt status by read */
		ret = pm860x_bulk_read(i2c, PM8607_INT_STATUS1,
					INT_STATUS_NUM, status_buf);
	}
	if (ret < 0)
		goto out;

	mutex_init(&chip->irq_lock);
	chip->irq_base = pdata->irq_base;
	chip->core_irq = i2c->irq;
	if (!chip->core_irq)
		goto out;

	/* register IRQ by genirq */
	for (i = 0; i < ARRAY_SIZE(pm860x_irqs); i++) {
		__irq = i + chip->irq_base;
		irq_set_chip_data(__irq, chip);
		irq_set_chip_and_handler(__irq, &pm860x_irq_chip,
					 handle_edge_irq);
		irq_set_nested_thread(__irq, 1);
#ifdef CONFIG_ARM
		set_irq_flags(__irq, IRQF_VALID);
#else
		irq_set_noprobe(__irq);
#endif
	}

	ret = request_threaded_irq(chip->core_irq, NULL, pm860x_irq, flags,
				   "88pm860x", chip);
	if (ret) {
		dev_err(chip->dev, "Failed to request IRQ: %d\n", ret);
		chip->core_irq = 0;
	}

	return 0;
out:
	chip->core_irq = 0;
	return ret;
}

static void device_irq_exit(struct pm860x_chip *chip)
{
	if (chip->core_irq)
		free_irq(chip->core_irq, chip);
}

static void __devinit device_bk_init(struct pm860x_chip *chip,
				     struct pm860x_platform_data *pdata)
{
	int ret;
	int i, j, id;

	if ((pdata == NULL) || (pdata->backlight == NULL))
		return;

	if (pdata->num_backlights > ARRAY_SIZE(bk_devs))
		pdata->num_backlights = ARRAY_SIZE(bk_devs);

	for (i = 0; i < pdata->num_backlights; i++) {
		bk_devs[i].platform_data = &pdata->backlight[i];
		bk_devs[i].pdata_size = sizeof(struct pm860x_backlight_pdata);

		for (j = 0; j < ARRAY_SIZE(bk_devs); j++) {
			id = bk_resources[j].start;
			if (pdata->backlight[i].flags != id)
				continue;

			bk_devs[i].num_resources = 1;
			bk_devs[i].resources = &bk_resources[j];
			ret = mfd_add_devices(chip->dev, 0,
					      &bk_devs[i], 1,
					      &bk_resources[j], 0);
			if (ret < 0) {
				dev_err(chip->dev, "Failed to add "
					"backlight subdev\n");
				return;
			}
		}
	}
}

static void __devinit device_led_init(struct pm860x_chip *chip,
				      struct pm860x_platform_data *pdata)
{
	int ret;
	int i, j, id;

	if ((pdata == NULL) || (pdata->led == NULL))
		return;

	if (pdata->num_leds > ARRAY_SIZE(led_devs))
		pdata->num_leds = ARRAY_SIZE(led_devs);

	for (i = 0; i < pdata->num_leds; i++) {
		led_devs[i].platform_data = &pdata->led[i];
		led_devs[i].pdata_size = sizeof(struct pm860x_led_pdata);

		for (j = 0; j < ARRAY_SIZE(led_devs); j++) {
			id = led_resources[j].start;
			if (pdata->led[i].flags != id)
				continue;

			led_devs[i].num_resources = 1;
			led_devs[i].resources = &led_resources[j],
			ret = mfd_add_devices(chip->dev, 0,
					      &led_devs[i], 1,
					      &led_resources[j], 0);
			if (ret < 0) {
				dev_err(chip->dev, "Failed to add "
					"led subdev\n");
				return;
			}
		}
	}
}

static void __devinit device_regulator_init(struct pm860x_chip *chip,
					    struct pm860x_platform_data *pdata)
{
	struct regulator_init_data *initdata;
	int ret;
	int i, seq;

	if ((pdata == NULL) || (pdata->regulator == NULL))
		return;

	if (pdata->num_regulators > ARRAY_SIZE(regulator_devs))
		pdata->num_regulators = ARRAY_SIZE(regulator_devs);

	for (i = 0, seq = -1; i < pdata->num_regulators; i++) {
		initdata = &pdata->regulator[i];
		seq = *(unsigned int *)initdata->driver_data;
		if ((seq < 0) || (seq > PM8607_ID_RG_MAX)) {
			dev_err(chip->dev, "Wrong ID(%d) on regulator(%s)\n",
				seq, initdata->constraints.name);
			goto out;
		}
		regulator_devs[i].platform_data = &pdata->regulator[i];
		regulator_devs[i].pdata_size = sizeof(struct regulator_init_data);
		regulator_devs[i].num_resources = 1;
		regulator_devs[i].resources = &regulator_resources[seq];

		ret = mfd_add_devices(chip->dev, 0, &regulator_devs[i], 1,
				      &regulator_resources[seq], 0);
		if (ret < 0) {
			dev_err(chip->dev, "Failed to add regulator subdev\n");
			goto out;
		}
	}
out:
	return;
}

static void __devinit device_rtc_init(struct pm860x_chip *chip,
				      struct pm860x_platform_data *pdata)
{
	int ret;

	if ((pdata == NULL))
		return;

	rtc_devs[0].platform_data = pdata->rtc;
	rtc_devs[0].pdata_size = sizeof(struct pm860x_rtc_pdata);
	rtc_devs[0].num_resources = ARRAY_SIZE(rtc_resources);
	rtc_devs[0].resources = &rtc_resources[0];
	ret = mfd_add_devices(chip->dev, 0, &rtc_devs[0],
			      ARRAY_SIZE(rtc_devs), &rtc_resources[0],
			      chip->irq_base);
	if (ret < 0)
		dev_err(chip->dev, "Failed to add rtc subdev\n");
}

static void __devinit device_touch_init(struct pm860x_chip *chip,
					struct pm860x_platform_data *pdata)
{
	int ret;

	if (pdata == NULL)
		return;

	touch_devs[0].platform_data = pdata->touch;
	touch_devs[0].pdata_size = sizeof(struct pm860x_touch_pdata);
	touch_devs[0].num_resources = ARRAY_SIZE(touch_resources);
	touch_devs[0].resources = &touch_resources[0];
	ret = mfd_add_devices(chip->dev, 0, &touch_devs[0],
			      ARRAY_SIZE(touch_devs), &touch_resources[0],
			      chip->irq_base);
	if (ret < 0)
		dev_err(chip->dev, "Failed to add touch subdev\n");
}

static void __devinit device_power_init(struct pm860x_chip *chip,
					struct pm860x_platform_data *pdata)
{
	int ret;

	if (pdata == NULL)
		return;

	power_devs[0].platform_data = pdata->power;
	power_devs[0].pdata_size = sizeof(struct pm860x_power_pdata);
	power_devs[0].num_resources = ARRAY_SIZE(battery_resources);
	power_devs[0].resources = &battery_resources[0],
	ret = mfd_add_devices(chip->dev, 0, &power_devs[0], 1,
			      &battery_resources[0], chip->irq_base);
	if (ret < 0)
		dev_err(chip->dev, "Failed to add battery subdev\n");

	power_devs[1].platform_data = pdata->power;
	power_devs[1].pdata_size = sizeof(struct pm860x_power_pdata);
	power_devs[1].num_resources = ARRAY_SIZE(charger_resources);
	power_devs[1].resources = &charger_resources[0],
	ret = mfd_add_devices(chip->dev, 0, &power_devs[1], 1,
			      &charger_resources[0], chip->irq_base);
	if (ret < 0)
		dev_err(chip->dev, "Failed to add charger subdev\n");
}

static void __devinit device_onkey_init(struct pm860x_chip *chip,
					struct pm860x_platform_data *pdata)
{
	int ret;

	onkey_devs[0].num_resources = ARRAY_SIZE(onkey_resources);
	onkey_devs[0].resources = &onkey_resources[0],
	ret = mfd_add_devices(chip->dev, 0, &onkey_devs[0],
			      ARRAY_SIZE(onkey_devs), &onkey_resources[0],
			      chip->irq_base);
	if (ret < 0)
		dev_err(chip->dev, "Failed to add onkey subdev\n");
}

static void __devinit device_codec_init(struct pm860x_chip *chip,
					struct pm860x_platform_data *pdata)
{
	int ret;

	codec_devs[0].num_resources = ARRAY_SIZE(codec_resources);
	codec_devs[0].resources = &codec_resources[0],
	ret = mfd_add_devices(chip->dev, 0, &codec_devs[0],
			      ARRAY_SIZE(codec_devs), &codec_resources[0], 0);
	if (ret < 0)
		dev_err(chip->dev, "Failed to add codec subdev\n");
}

static void __devinit device_8607_init(struct pm860x_chip *chip,
				       struct i2c_client *i2c,
				       struct pm860x_platform_data *pdata)
{
	int data, ret;

	ret = pm860x_reg_read(i2c, PM8607_CHIP_ID);
	if (ret < 0) {
		dev_err(chip->dev, "Failed to read CHIP ID: %d\n", ret);
		goto out;
	}
	switch (ret & PM8607_VERSION_MASK) {
	case 0x40:
	case 0x50:
		dev_info(chip->dev, "Marvell 88PM8607 (ID: %02x) detected\n",
			 ret);
		break;
	default:
		dev_err(chip->dev, "Failed to detect Marvell 88PM8607. "
			"Chip ID: %02x\n", ret);
		goto out;
	}

	ret = pm860x_reg_read(i2c, PM8607_BUCK3);
	if (ret < 0) {
		dev_err(chip->dev, "Failed to read BUCK3 register: %d\n", ret);
		goto out;
	}
	if (ret & PM8607_BUCK3_DOUBLE)
		chip->buck3_double = 1;

	ret = pm860x_reg_read(i2c, PM8607_B0_MISC1);
	if (ret < 0) {
		dev_err(chip->dev, "Failed to read MISC1 register: %d\n", ret);
		goto out;
	}

	if (pdata && (pdata->i2c_port == PI2C_PORT))
		data = PM8607_B0_MISC1_PI2C;
	else
		data = 0;
	ret = pm860x_set_bits(i2c, PM8607_B0_MISC1, PM8607_B0_MISC1_PI2C, data);
	if (ret < 0) {
		dev_err(chip->dev, "Failed to access MISC1:%d\n", ret);
		goto out;
	}

	ret = device_gpadc_init(chip, pdata);
	if (ret < 0)
		goto out;

	ret = device_irq_init(chip, pdata);
	if (ret < 0)
		goto out;

	device_regulator_init(chip, pdata);
	device_rtc_init(chip, pdata);
	device_onkey_init(chip, pdata);
	device_touch_init(chip, pdata);
	device_power_init(chip, pdata);
	device_codec_init(chip, pdata);
out:
	return;
}

int __devinit pm860x_device_init(struct pm860x_chip *chip,
		       struct pm860x_platform_data *pdata)
{
	chip->core_irq = 0;

	switch (chip->id) {
	case CHIP_PM8606:
		device_bk_init(chip, pdata);
		device_led_init(chip, pdata);
		break;
	case CHIP_PM8607:
		device_8607_init(chip, chip->client, pdata);
		break;
	}

	if (chip->companion) {
		switch (chip->id) {
		case CHIP_PM8607:
			device_bk_init(chip, pdata);
			device_led_init(chip, pdata);
			break;
		case CHIP_PM8606:
			device_8607_init(chip, chip->companion, pdata);
			break;
		}
	}

	return 0;
}

void __devexit pm860x_device_exit(struct pm860x_chip *chip)
{
	device_irq_exit(chip);
	mfd_remove_devices(chip->dev);
}

MODULE_DESCRIPTION("PMIC Driver for Marvell 88PM860x");
MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
MODULE_LICENSE("GPL");