GNU Linux-libre 5.10.219-gnu1
[releases.git] / drivers / mfd / 88pm860x-core.c
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Base driver for Marvell 88PM8607
4  *
5  * Copyright (C) 2009 Marvell International Ltd.
6  *
7  * Author: Haojian Zhuang <haojian.zhuang@marvell.com>
8  */
9
10 #include <linux/kernel.h>
11 #include <linux/module.h>
12 #include <linux/err.h>
13 #include <linux/i2c.h>
14 #include <linux/irq.h>
15 #include <linux/interrupt.h>
16 #include <linux/irqdomain.h>
17 #include <linux/of.h>
18 #include <linux/of_platform.h>
19 #include <linux/platform_device.h>
20 #include <linux/regmap.h>
21 #include <linux/slab.h>
22 #include <linux/mfd/core.h>
23 #include <linux/mfd/88pm860x.h>
24 #include <linux/regulator/machine.h>
25 #include <linux/power/charger-manager.h>
26
27 #define INT_STATUS_NUM                  3
28
29 static struct resource bk0_resources[] = {
30         {2, 2, "duty cycle", IORESOURCE_REG, },
31         {3, 3, "always on",  IORESOURCE_REG, },
32         {3, 3, "current",    IORESOURCE_REG, },
33 };
34 static struct resource bk1_resources[] = {
35         {4, 4, "duty cycle", IORESOURCE_REG, },
36         {5, 5, "always on",  IORESOURCE_REG, },
37         {5, 5, "current",    IORESOURCE_REG, },
38 };
39 static struct resource bk2_resources[] = {
40         {6, 6, "duty cycle", IORESOURCE_REG, },
41         {7, 7, "always on",  IORESOURCE_REG, },
42         {5, 5, "current",    IORESOURCE_REG, },
43 };
44
45 static struct resource led0_resources[] = {
46         /* RGB1 Red LED */
47         {0xd, 0xd, "control", IORESOURCE_REG, },
48         {0xc, 0xc, "blink",   IORESOURCE_REG, },
49 };
50 static struct resource led1_resources[] = {
51         /* RGB1 Green LED */
52         {0xe, 0xe, "control", IORESOURCE_REG, },
53         {0xc, 0xc, "blink",   IORESOURCE_REG, },
54 };
55 static struct resource led2_resources[] = {
56         /* RGB1 Blue LED */
57         {0xf, 0xf, "control", IORESOURCE_REG, },
58         {0xc, 0xc, "blink",   IORESOURCE_REG, },
59 };
60 static struct resource led3_resources[] = {
61         /* RGB2 Red LED */
62         {0x9, 0x9, "control", IORESOURCE_REG, },
63         {0x8, 0x8, "blink",   IORESOURCE_REG, },
64 };
65 static struct resource led4_resources[] = {
66         /* RGB2 Green LED */
67         {0xa, 0xa, "control", IORESOURCE_REG, },
68         {0x8, 0x8, "blink",   IORESOURCE_REG, },
69 };
70 static struct resource led5_resources[] = {
71         /* RGB2 Blue LED */
72         {0xb, 0xb, "control", IORESOURCE_REG, },
73         {0x8, 0x8, "blink",   IORESOURCE_REG, },
74 };
75
76 static struct resource buck1_resources[] = {
77         {0x24, 0x24, "buck set", IORESOURCE_REG, },
78 };
79 static struct resource buck2_resources[] = {
80         {0x25, 0x25, "buck set", IORESOURCE_REG, },
81 };
82 static struct resource buck3_resources[] = {
83         {0x26, 0x26, "buck set", IORESOURCE_REG, },
84 };
85 static struct resource ldo1_resources[] = {
86         {0x10, 0x10, "ldo set", IORESOURCE_REG, },
87 };
88 static struct resource ldo2_resources[] = {
89         {0x11, 0x11, "ldo set", IORESOURCE_REG, },
90 };
91 static struct resource ldo3_resources[] = {
92         {0x12, 0x12, "ldo set", IORESOURCE_REG, },
93 };
94 static struct resource ldo4_resources[] = {
95         {0x13, 0x13, "ldo set", IORESOURCE_REG, },
96 };
97 static struct resource ldo5_resources[] = {
98         {0x14, 0x14, "ldo set", IORESOURCE_REG, },
99 };
100 static struct resource ldo6_resources[] = {
101         {0x15, 0x15, "ldo set", IORESOURCE_REG, },
102 };
103 static struct resource ldo7_resources[] = {
104         {0x16, 0x16, "ldo set", IORESOURCE_REG, },
105 };
106 static struct resource ldo8_resources[] = {
107         {0x17, 0x17, "ldo set", IORESOURCE_REG, },
108 };
109 static struct resource ldo9_resources[] = {
110         {0x18, 0x18, "ldo set", IORESOURCE_REG, },
111 };
112 static struct resource ldo10_resources[] = {
113         {0x19, 0x19, "ldo set", IORESOURCE_REG, },
114 };
115 static struct resource ldo12_resources[] = {
116         {0x1a, 0x1a, "ldo set", IORESOURCE_REG, },
117 };
118 static struct resource ldo_vibrator_resources[] = {
119         {0x28, 0x28, "ldo set", IORESOURCE_REG, },
120 };
121 static struct resource ldo14_resources[] = {
122         {0x1b, 0x1b, "ldo set", IORESOURCE_REG, },
123 };
124
125 static struct resource touch_resources[] = {
126         {PM8607_IRQ_PEN, PM8607_IRQ_PEN, "touch", IORESOURCE_IRQ,},
127 };
128
129 static struct resource onkey_resources[] = {
130         {PM8607_IRQ_ONKEY, PM8607_IRQ_ONKEY, "onkey", IORESOURCE_IRQ,},
131 };
132
133 static struct resource codec_resources[] = {
134         /* Headset microphone insertion or removal */
135         {PM8607_IRQ_MICIN,   PM8607_IRQ_MICIN,   "micin",   IORESOURCE_IRQ,},
136         /* Hook-switch press or release */
137         {PM8607_IRQ_HOOK,    PM8607_IRQ_HOOK,    "hook",    IORESOURCE_IRQ,},
138         /* Headset insertion or removal */
139         {PM8607_IRQ_HEADSET, PM8607_IRQ_HEADSET, "headset", IORESOURCE_IRQ,},
140         /* Audio short */
141         {PM8607_IRQ_AUDIO_SHORT, PM8607_IRQ_AUDIO_SHORT, "audio-short",
142          IORESOURCE_IRQ,},
143 };
144
145 static struct resource battery_resources[] = {
146         {PM8607_IRQ_CC,  PM8607_IRQ_CC,  "columb counter", IORESOURCE_IRQ,},
147         {PM8607_IRQ_BAT, PM8607_IRQ_BAT, "battery",        IORESOURCE_IRQ,},
148 };
149
150 static struct resource charger_resources[] = {
151         {PM8607_IRQ_CHG,  PM8607_IRQ_CHG,  "charger detect",  IORESOURCE_IRQ,},
152         {PM8607_IRQ_CHG_DONE,  PM8607_IRQ_CHG_DONE,  "charging done",
153          IORESOURCE_IRQ,},
154         {PM8607_IRQ_CHG_FAIL,  PM8607_IRQ_CHG_FAIL,  "charging timeout",
155          IORESOURCE_IRQ,},
156         {PM8607_IRQ_CHG_FAULT, PM8607_IRQ_CHG_FAULT, "charging fault",
157          IORESOURCE_IRQ,},
158         {PM8607_IRQ_GPADC1,    PM8607_IRQ_GPADC1,    "battery temperature",
159          IORESOURCE_IRQ,},
160         {PM8607_IRQ_VBAT, PM8607_IRQ_VBAT, "battery voltage", IORESOURCE_IRQ,},
161         {PM8607_IRQ_VCHG, PM8607_IRQ_VCHG, "vchg voltage",    IORESOURCE_IRQ,},
162 };
163
164 static struct resource rtc_resources[] = {
165         {PM8607_IRQ_RTC, PM8607_IRQ_RTC, "rtc", IORESOURCE_IRQ,},
166 };
167
168 static struct mfd_cell bk_devs[] = {
169         {
170                 .name = "88pm860x-backlight",
171                 .id = 0,
172                 .num_resources = ARRAY_SIZE(bk0_resources),
173                 .resources = bk0_resources,
174         }, {
175                 .name = "88pm860x-backlight",
176                 .id = 1,
177                 .num_resources = ARRAY_SIZE(bk1_resources),
178                 .resources = bk1_resources,
179         }, {
180                 .name = "88pm860x-backlight",
181                 .id = 2,
182                 .num_resources = ARRAY_SIZE(bk2_resources),
183                 .resources = bk2_resources,
184         },
185 };
186
187 static struct mfd_cell led_devs[] = {
188         {
189                 .name = "88pm860x-led",
190                 .id = 0,
191                 .num_resources = ARRAY_SIZE(led0_resources),
192                 .resources = led0_resources,
193         }, {
194                 .name = "88pm860x-led",
195                 .id = 1,
196                 .num_resources = ARRAY_SIZE(led1_resources),
197                 .resources = led1_resources,
198         }, {
199                 .name = "88pm860x-led",
200                 .id = 2,
201                 .num_resources = ARRAY_SIZE(led2_resources),
202                 .resources = led2_resources,
203         }, {
204                 .name = "88pm860x-led",
205                 .id = 3,
206                 .num_resources = ARRAY_SIZE(led3_resources),
207                 .resources = led3_resources,
208         }, {
209                 .name = "88pm860x-led",
210                 .id = 4,
211                 .num_resources = ARRAY_SIZE(led4_resources),
212                 .resources = led4_resources,
213         }, {
214                 .name = "88pm860x-led",
215                 .id = 5,
216                 .num_resources = ARRAY_SIZE(led5_resources),
217                 .resources = led5_resources,
218         },
219 };
220
221 static struct mfd_cell reg_devs[] = {
222         {
223                 .name = "88pm860x-regulator",
224                 .id = 0,
225                 .num_resources = ARRAY_SIZE(buck1_resources),
226                 .resources = buck1_resources,
227         }, {
228                 .name = "88pm860x-regulator",
229                 .id = 1,
230                 .num_resources = ARRAY_SIZE(buck2_resources),
231                 .resources = buck2_resources,
232         }, {
233                 .name = "88pm860x-regulator",
234                 .id = 2,
235                 .num_resources = ARRAY_SIZE(buck3_resources),
236                 .resources = buck3_resources,
237         }, {
238                 .name = "88pm860x-regulator",
239                 .id = 3,
240                 .num_resources = ARRAY_SIZE(ldo1_resources),
241                 .resources = ldo1_resources,
242         }, {
243                 .name = "88pm860x-regulator",
244                 .id = 4,
245                 .num_resources = ARRAY_SIZE(ldo2_resources),
246                 .resources = ldo2_resources,
247         }, {
248                 .name = "88pm860x-regulator",
249                 .id = 5,
250                 .num_resources = ARRAY_SIZE(ldo3_resources),
251                 .resources = ldo3_resources,
252         }, {
253                 .name = "88pm860x-regulator",
254                 .id = 6,
255                 .num_resources = ARRAY_SIZE(ldo4_resources),
256                 .resources = ldo4_resources,
257         }, {
258                 .name = "88pm860x-regulator",
259                 .id = 7,
260                 .num_resources = ARRAY_SIZE(ldo5_resources),
261                 .resources = ldo5_resources,
262         }, {
263                 .name = "88pm860x-regulator",
264                 .id = 8,
265                 .num_resources = ARRAY_SIZE(ldo6_resources),
266                 .resources = ldo6_resources,
267         }, {
268                 .name = "88pm860x-regulator",
269                 .id = 9,
270                 .num_resources = ARRAY_SIZE(ldo7_resources),
271                 .resources = ldo7_resources,
272         }, {
273                 .name = "88pm860x-regulator",
274                 .id = 10,
275                 .num_resources = ARRAY_SIZE(ldo8_resources),
276                 .resources = ldo8_resources,
277         }, {
278                 .name = "88pm860x-regulator",
279                 .id = 11,
280                 .num_resources = ARRAY_SIZE(ldo9_resources),
281                 .resources = ldo9_resources,
282         }, {
283                 .name = "88pm860x-regulator",
284                 .id = 12,
285                 .num_resources = ARRAY_SIZE(ldo10_resources),
286                 .resources = ldo10_resources,
287         }, {
288                 .name = "88pm860x-regulator",
289                 .id = 13,
290                 .num_resources = ARRAY_SIZE(ldo12_resources),
291                 .resources = ldo12_resources,
292         }, {
293                 .name = "88pm860x-regulator",
294                 .id = 14,
295                 .num_resources = ARRAY_SIZE(ldo_vibrator_resources),
296                 .resources = ldo_vibrator_resources,
297         }, {
298                 .name = "88pm860x-regulator",
299                 .id = 15,
300                 .num_resources = ARRAY_SIZE(ldo14_resources),
301                 .resources = ldo14_resources,
302         },
303 };
304
305 static struct mfd_cell touch_devs[] = {
306         {"88pm860x-touch", -1,},
307 };
308
309 static struct mfd_cell onkey_devs[] = {
310         {"88pm860x-onkey", -1,},
311 };
312
313 static struct mfd_cell codec_devs[] = {
314         {"88pm860x-codec", -1,},
315 };
316
317 static struct regulator_consumer_supply preg_supply[] = {
318         REGULATOR_SUPPLY("preg", "charger-manager"),
319 };
320
321 static struct regulator_init_data preg_init_data = {
322         .num_consumer_supplies  = ARRAY_SIZE(preg_supply),
323         .consumer_supplies      = &preg_supply[0],
324 };
325
326 static struct charger_regulator chg_desc_regulator_data[] = {
327         { .regulator_name = "preg", },
328 };
329
330 static struct mfd_cell power_devs[] = {
331         {"88pm860x-battery", -1,},
332         {"88pm860x-charger", -1,},
333         {"88pm860x-preg",    -1,},
334         {"charger-manager", -1,},
335 };
336
337 static struct mfd_cell rtc_devs[] = {
338         {"88pm860x-rtc", -1,},
339 };
340
341
342 struct pm860x_irq_data {
343         int     reg;
344         int     mask_reg;
345         int     enable;         /* enable or not */
346         int     offs;           /* bit offset in mask register */
347 };
348
349 static struct pm860x_irq_data pm860x_irqs[] = {
350         [PM8607_IRQ_ONKEY] = {
351                 .reg            = PM8607_INT_STATUS1,
352                 .mask_reg       = PM8607_INT_MASK_1,
353                 .offs           = 1 << 0,
354         },
355         [PM8607_IRQ_EXTON] = {
356                 .reg            = PM8607_INT_STATUS1,
357                 .mask_reg       = PM8607_INT_MASK_1,
358                 .offs           = 1 << 1,
359         },
360         [PM8607_IRQ_CHG] = {
361                 .reg            = PM8607_INT_STATUS1,
362                 .mask_reg       = PM8607_INT_MASK_1,
363                 .offs           = 1 << 2,
364         },
365         [PM8607_IRQ_BAT] = {
366                 .reg            = PM8607_INT_STATUS1,
367                 .mask_reg       = PM8607_INT_MASK_1,
368                 .offs           = 1 << 3,
369         },
370         [PM8607_IRQ_RTC] = {
371                 .reg            = PM8607_INT_STATUS1,
372                 .mask_reg       = PM8607_INT_MASK_1,
373                 .offs           = 1 << 4,
374         },
375         [PM8607_IRQ_CC] = {
376                 .reg            = PM8607_INT_STATUS1,
377                 .mask_reg       = PM8607_INT_MASK_1,
378                 .offs           = 1 << 5,
379         },
380         [PM8607_IRQ_VBAT] = {
381                 .reg            = PM8607_INT_STATUS2,
382                 .mask_reg       = PM8607_INT_MASK_2,
383                 .offs           = 1 << 0,
384         },
385         [PM8607_IRQ_VCHG] = {
386                 .reg            = PM8607_INT_STATUS2,
387                 .mask_reg       = PM8607_INT_MASK_2,
388                 .offs           = 1 << 1,
389         },
390         [PM8607_IRQ_VSYS] = {
391                 .reg            = PM8607_INT_STATUS2,
392                 .mask_reg       = PM8607_INT_MASK_2,
393                 .offs           = 1 << 2,
394         },
395         [PM8607_IRQ_TINT] = {
396                 .reg            = PM8607_INT_STATUS2,
397                 .mask_reg       = PM8607_INT_MASK_2,
398                 .offs           = 1 << 3,
399         },
400         [PM8607_IRQ_GPADC0] = {
401                 .reg            = PM8607_INT_STATUS2,
402                 .mask_reg       = PM8607_INT_MASK_2,
403                 .offs           = 1 << 4,
404         },
405         [PM8607_IRQ_GPADC1] = {
406                 .reg            = PM8607_INT_STATUS2,
407                 .mask_reg       = PM8607_INT_MASK_2,
408                 .offs           = 1 << 5,
409         },
410         [PM8607_IRQ_GPADC2] = {
411                 .reg            = PM8607_INT_STATUS2,
412                 .mask_reg       = PM8607_INT_MASK_2,
413                 .offs           = 1 << 6,
414         },
415         [PM8607_IRQ_GPADC3] = {
416                 .reg            = PM8607_INT_STATUS2,
417                 .mask_reg       = PM8607_INT_MASK_2,
418                 .offs           = 1 << 7,
419         },
420         [PM8607_IRQ_AUDIO_SHORT] = {
421                 .reg            = PM8607_INT_STATUS3,
422                 .mask_reg       = PM8607_INT_MASK_3,
423                 .offs           = 1 << 0,
424         },
425         [PM8607_IRQ_PEN] = {
426                 .reg            = PM8607_INT_STATUS3,
427                 .mask_reg       = PM8607_INT_MASK_3,
428                 .offs           = 1 << 1,
429         },
430         [PM8607_IRQ_HEADSET] = {
431                 .reg            = PM8607_INT_STATUS3,
432                 .mask_reg       = PM8607_INT_MASK_3,
433                 .offs           = 1 << 2,
434         },
435         [PM8607_IRQ_HOOK] = {
436                 .reg            = PM8607_INT_STATUS3,
437                 .mask_reg       = PM8607_INT_MASK_3,
438                 .offs           = 1 << 3,
439         },
440         [PM8607_IRQ_MICIN] = {
441                 .reg            = PM8607_INT_STATUS3,
442                 .mask_reg       = PM8607_INT_MASK_3,
443                 .offs           = 1 << 4,
444         },
445         [PM8607_IRQ_CHG_FAIL] = {
446                 .reg            = PM8607_INT_STATUS3,
447                 .mask_reg       = PM8607_INT_MASK_3,
448                 .offs           = 1 << 5,
449         },
450         [PM8607_IRQ_CHG_DONE] = {
451                 .reg            = PM8607_INT_STATUS3,
452                 .mask_reg       = PM8607_INT_MASK_3,
453                 .offs           = 1 << 6,
454         },
455         [PM8607_IRQ_CHG_FAULT] = {
456                 .reg            = PM8607_INT_STATUS3,
457                 .mask_reg       = PM8607_INT_MASK_3,
458                 .offs           = 1 << 7,
459         },
460 };
461
462 static irqreturn_t pm860x_irq(int irq, void *data)
463 {
464         struct pm860x_chip *chip = data;
465         struct pm860x_irq_data *irq_data;
466         struct i2c_client *i2c;
467         int read_reg = -1, value = 0;
468         int i;
469
470         i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion;
471         for (i = 0; i < ARRAY_SIZE(pm860x_irqs); i++) {
472                 irq_data = &pm860x_irqs[i];
473                 if (read_reg != irq_data->reg) {
474                         read_reg = irq_data->reg;
475                         value = pm860x_reg_read(i2c, irq_data->reg);
476                 }
477                 if (value & irq_data->enable)
478                         handle_nested_irq(chip->irq_base + i);
479         }
480         return IRQ_HANDLED;
481 }
482
483 static void pm860x_irq_lock(struct irq_data *data)
484 {
485         struct pm860x_chip *chip = irq_data_get_irq_chip_data(data);
486
487         mutex_lock(&chip->irq_lock);
488 }
489
490 static void pm860x_irq_sync_unlock(struct irq_data *data)
491 {
492         struct pm860x_chip *chip = irq_data_get_irq_chip_data(data);
493         struct pm860x_irq_data *irq_data;
494         struct i2c_client *i2c;
495         static unsigned char cached[3] = {0x0, 0x0, 0x0};
496         unsigned char mask[3];
497         int i;
498
499         i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion;
500         /* Load cached value. In initial, all IRQs are masked */
501         for (i = 0; i < 3; i++)
502                 mask[i] = cached[i];
503         for (i = 0; i < ARRAY_SIZE(pm860x_irqs); i++) {
504                 irq_data = &pm860x_irqs[i];
505                 switch (irq_data->mask_reg) {
506                 case PM8607_INT_MASK_1:
507                         mask[0] &= ~irq_data->offs;
508                         mask[0] |= irq_data->enable;
509                         break;
510                 case PM8607_INT_MASK_2:
511                         mask[1] &= ~irq_data->offs;
512                         mask[1] |= irq_data->enable;
513                         break;
514                 case PM8607_INT_MASK_3:
515                         mask[2] &= ~irq_data->offs;
516                         mask[2] |= irq_data->enable;
517                         break;
518                 default:
519                         dev_err(chip->dev, "wrong IRQ\n");
520                         break;
521                 }
522         }
523         /* update mask into registers */
524         for (i = 0; i < 3; i++) {
525                 if (mask[i] != cached[i]) {
526                         cached[i] = mask[i];
527                         pm860x_reg_write(i2c, PM8607_INT_MASK_1 + i, mask[i]);
528                 }
529         }
530
531         mutex_unlock(&chip->irq_lock);
532 }
533
534 static void pm860x_irq_enable(struct irq_data *data)
535 {
536         pm860x_irqs[data->hwirq].enable = pm860x_irqs[data->hwirq].offs;
537 }
538
539 static void pm860x_irq_disable(struct irq_data *data)
540 {
541         pm860x_irqs[data->hwirq].enable = 0;
542 }
543
544 static struct irq_chip pm860x_irq_chip = {
545         .name           = "88pm860x",
546         .irq_bus_lock   = pm860x_irq_lock,
547         .irq_bus_sync_unlock = pm860x_irq_sync_unlock,
548         .irq_enable     = pm860x_irq_enable,
549         .irq_disable    = pm860x_irq_disable,
550 };
551
552 static int pm860x_irq_domain_map(struct irq_domain *d, unsigned int virq,
553                                  irq_hw_number_t hw)
554 {
555         irq_set_chip_data(virq, d->host_data);
556         irq_set_chip_and_handler(virq, &pm860x_irq_chip, handle_edge_irq);
557         irq_set_nested_thread(virq, 1);
558         irq_set_noprobe(virq);
559         return 0;
560 }
561
562 static const struct irq_domain_ops pm860x_irq_domain_ops = {
563         .map    = pm860x_irq_domain_map,
564         .xlate  = irq_domain_xlate_onetwocell,
565 };
566
567 static int device_irq_init(struct pm860x_chip *chip,
568                                      struct pm860x_platform_data *pdata)
569 {
570         struct i2c_client *i2c = (chip->id == CHIP_PM8607) ?
571                 chip->client : chip->companion;
572         unsigned char status_buf[INT_STATUS_NUM];
573         unsigned long flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT;
574         int data, mask, ret = -EINVAL;
575         int nr_irqs, irq_base = -1;
576         struct device_node *node = i2c->dev.of_node;
577
578         mask = PM8607_B0_MISC1_INV_INT | PM8607_B0_MISC1_INT_CLEAR
579                 | PM8607_B0_MISC1_INT_MASK;
580         data = 0;
581         chip->irq_mode = 0;
582         if (pdata && pdata->irq_mode) {
583                 /*
584                  * irq_mode defines the way of clearing interrupt. If it's 1,
585                  * clear IRQ by write. Otherwise, clear it by read.
586                  * This control bit is valid from 88PM8607 B0 steping.
587                  */
588                 data |= PM8607_B0_MISC1_INT_CLEAR;
589                 chip->irq_mode = 1;
590         }
591         ret = pm860x_set_bits(i2c, PM8607_B0_MISC1, mask, data);
592         if (ret < 0)
593                 goto out;
594
595         /* mask all IRQs */
596         memset(status_buf, 0, INT_STATUS_NUM);
597         ret = pm860x_bulk_write(i2c, PM8607_INT_MASK_1,
598                                 INT_STATUS_NUM, status_buf);
599         if (ret < 0)
600                 goto out;
601
602         if (chip->irq_mode) {
603                 /* clear interrupt status by write */
604                 memset(status_buf, 0xFF, INT_STATUS_NUM);
605                 ret = pm860x_bulk_write(i2c, PM8607_INT_STATUS1,
606                                         INT_STATUS_NUM, status_buf);
607         } else {
608                 /* clear interrupt status by read */
609                 ret = pm860x_bulk_read(i2c, PM8607_INT_STATUS1,
610                                         INT_STATUS_NUM, status_buf);
611         }
612         if (ret < 0)
613                 goto out;
614
615         mutex_init(&chip->irq_lock);
616
617         if (pdata && pdata->irq_base)
618                 irq_base = pdata->irq_base;
619         nr_irqs = ARRAY_SIZE(pm860x_irqs);
620         chip->irq_base = irq_alloc_descs(irq_base, 0, nr_irqs, 0);
621         if (chip->irq_base < 0) {
622                 dev_err(&i2c->dev, "Failed to allocate interrupts, ret:%d\n",
623                         chip->irq_base);
624                 ret = -EBUSY;
625                 goto out;
626         }
627         irq_domain_add_legacy(node, nr_irqs, chip->irq_base, 0,
628                               &pm860x_irq_domain_ops, chip);
629         chip->core_irq = i2c->irq;
630         if (!chip->core_irq)
631                 goto out;
632
633         ret = request_threaded_irq(chip->core_irq, NULL, pm860x_irq,
634                                    flags | IRQF_ONESHOT, "88pm860x", chip);
635         if (ret) {
636                 dev_err(chip->dev, "Failed to request IRQ: %d\n", ret);
637                 chip->core_irq = 0;
638         }
639
640         return 0;
641 out:
642         chip->core_irq = 0;
643         return ret;
644 }
645
646 static void device_irq_exit(struct pm860x_chip *chip)
647 {
648         if (chip->core_irq)
649                 free_irq(chip->core_irq, chip);
650 }
651
652 int pm8606_osc_enable(struct pm860x_chip *chip, unsigned short client)
653 {
654         int ret = -EIO;
655         struct i2c_client *i2c = (chip->id == CHIP_PM8606) ?
656                 chip->client : chip->companion;
657
658         dev_dbg(chip->dev, "%s(B): client=0x%x\n", __func__, client);
659         dev_dbg(chip->dev, "%s(B): vote=0x%x status=%d\n",
660                         __func__, chip->osc_vote,
661                         chip->osc_status);
662
663         mutex_lock(&chip->osc_lock);
664         /* Update voting status */
665         chip->osc_vote |= client;
666         /* If reference group is off - turn on*/
667         if (chip->osc_status != PM8606_REF_GP_OSC_ON) {
668                 chip->osc_status = PM8606_REF_GP_OSC_UNKNOWN;
669                 /* Enable Reference group Vsys */
670                 if (pm860x_set_bits(i2c, PM8606_VSYS,
671                                 PM8606_VSYS_EN, PM8606_VSYS_EN))
672                         goto out;
673
674                 /*Enable Internal Oscillator */
675                 if (pm860x_set_bits(i2c, PM8606_MISC,
676                                 PM8606_MISC_OSC_EN, PM8606_MISC_OSC_EN))
677                         goto out;
678                 /* Update status (only if writes succeed) */
679                 chip->osc_status = PM8606_REF_GP_OSC_ON;
680         }
681         mutex_unlock(&chip->osc_lock);
682
683         dev_dbg(chip->dev, "%s(A): vote=0x%x status=%d ret=%d\n",
684                         __func__, chip->osc_vote,
685                         chip->osc_status, ret);
686         return 0;
687 out:
688         mutex_unlock(&chip->osc_lock);
689         return ret;
690 }
691 EXPORT_SYMBOL(pm8606_osc_enable);
692
693 int pm8606_osc_disable(struct pm860x_chip *chip, unsigned short client)
694 {
695         int ret = -EIO;
696         struct i2c_client *i2c = (chip->id == CHIP_PM8606) ?
697                 chip->client : chip->companion;
698
699         dev_dbg(chip->dev, "%s(B): client=0x%x\n", __func__, client);
700         dev_dbg(chip->dev, "%s(B): vote=0x%x status=%d\n",
701                         __func__, chip->osc_vote,
702                         chip->osc_status);
703
704         mutex_lock(&chip->osc_lock);
705         /* Update voting status */
706         chip->osc_vote &= ~(client);
707         /*
708          * If reference group is off and this is the last client to release
709          * - turn off
710          */
711         if ((chip->osc_status != PM8606_REF_GP_OSC_OFF) &&
712                         (chip->osc_vote == REF_GP_NO_CLIENTS)) {
713                 chip->osc_status = PM8606_REF_GP_OSC_UNKNOWN;
714                 /* Disable Reference group Vsys */
715                 if (pm860x_set_bits(i2c, PM8606_VSYS, PM8606_VSYS_EN, 0))
716                         goto out;
717                 /* Disable Internal Oscillator */
718                 if (pm860x_set_bits(i2c, PM8606_MISC, PM8606_MISC_OSC_EN, 0))
719                         goto out;
720                 chip->osc_status = PM8606_REF_GP_OSC_OFF;
721         }
722         mutex_unlock(&chip->osc_lock);
723
724         dev_dbg(chip->dev, "%s(A): vote=0x%x status=%d ret=%d\n",
725                         __func__, chip->osc_vote,
726                         chip->osc_status, ret);
727         return 0;
728 out:
729         mutex_unlock(&chip->osc_lock);
730         return ret;
731 }
732 EXPORT_SYMBOL(pm8606_osc_disable);
733
734 static void device_osc_init(struct i2c_client *i2c)
735 {
736         struct pm860x_chip *chip = i2c_get_clientdata(i2c);
737
738         mutex_init(&chip->osc_lock);
739         /* init portofino reference group voting and status */
740         /* Disable Reference group Vsys */
741         pm860x_set_bits(i2c, PM8606_VSYS, PM8606_VSYS_EN, 0);
742         /* Disable Internal Oscillator */
743         pm860x_set_bits(i2c, PM8606_MISC, PM8606_MISC_OSC_EN, 0);
744
745         chip->osc_vote = REF_GP_NO_CLIENTS;
746         chip->osc_status = PM8606_REF_GP_OSC_OFF;
747 }
748
749 static void device_bk_init(struct pm860x_chip *chip,
750                                      struct pm860x_platform_data *pdata)
751 {
752         int ret, i;
753
754         if (pdata && pdata->backlight) {
755                 if (pdata->num_backlights > ARRAY_SIZE(bk_devs))
756                         pdata->num_backlights = ARRAY_SIZE(bk_devs);
757                 for (i = 0; i < pdata->num_backlights; i++) {
758                         bk_devs[i].platform_data = &pdata->backlight[i];
759                         bk_devs[i].pdata_size =
760                                 sizeof(struct pm860x_backlight_pdata);
761                 }
762         }
763         ret = mfd_add_devices(chip->dev, 0, bk_devs,
764                               ARRAY_SIZE(bk_devs), NULL, 0, NULL);
765         if (ret < 0)
766                 dev_err(chip->dev, "Failed to add backlight subdev\n");
767 }
768
769 static void device_led_init(struct pm860x_chip *chip,
770                                       struct pm860x_platform_data *pdata)
771 {
772         int ret, i;
773
774         if (pdata && pdata->led) {
775                 if (pdata->num_leds > ARRAY_SIZE(led_devs))
776                         pdata->num_leds = ARRAY_SIZE(led_devs);
777                 for (i = 0; i < pdata->num_leds; i++) {
778                         led_devs[i].platform_data = &pdata->led[i];
779                         led_devs[i].pdata_size =
780                                 sizeof(struct pm860x_led_pdata);
781                 }
782         }
783         ret = mfd_add_devices(chip->dev, 0, led_devs,
784                               ARRAY_SIZE(led_devs), NULL, 0, NULL);
785         if (ret < 0) {
786                 dev_err(chip->dev, "Failed to add led subdev\n");
787                 return;
788         }
789 }
790
791 static void device_regulator_init(struct pm860x_chip *chip,
792                                             struct pm860x_platform_data *pdata)
793 {
794         int ret;
795
796         if (pdata == NULL)
797                 return;
798         if (pdata->buck1) {
799                 reg_devs[0].platform_data = pdata->buck1;
800                 reg_devs[0].pdata_size = sizeof(struct regulator_init_data);
801         }
802         if (pdata->buck2) {
803                 reg_devs[1].platform_data = pdata->buck2;
804                 reg_devs[1].pdata_size = sizeof(struct regulator_init_data);
805         }
806         if (pdata->buck3) {
807                 reg_devs[2].platform_data = pdata->buck3;
808                 reg_devs[2].pdata_size = sizeof(struct regulator_init_data);
809         }
810         if (pdata->ldo1) {
811                 reg_devs[3].platform_data = pdata->ldo1;
812                 reg_devs[3].pdata_size = sizeof(struct regulator_init_data);
813         }
814         if (pdata->ldo2) {
815                 reg_devs[4].platform_data = pdata->ldo2;
816                 reg_devs[4].pdata_size = sizeof(struct regulator_init_data);
817         }
818         if (pdata->ldo3) {
819                 reg_devs[5].platform_data = pdata->ldo3;
820                 reg_devs[5].pdata_size = sizeof(struct regulator_init_data);
821         }
822         if (pdata->ldo4) {
823                 reg_devs[6].platform_data = pdata->ldo4;
824                 reg_devs[6].pdata_size = sizeof(struct regulator_init_data);
825         }
826         if (pdata->ldo5) {
827                 reg_devs[7].platform_data = pdata->ldo5;
828                 reg_devs[7].pdata_size = sizeof(struct regulator_init_data);
829         }
830         if (pdata->ldo6) {
831                 reg_devs[8].platform_data = pdata->ldo6;
832                 reg_devs[8].pdata_size = sizeof(struct regulator_init_data);
833         }
834         if (pdata->ldo7) {
835                 reg_devs[9].platform_data = pdata->ldo7;
836                 reg_devs[9].pdata_size = sizeof(struct regulator_init_data);
837         }
838         if (pdata->ldo8) {
839                 reg_devs[10].platform_data = pdata->ldo8;
840                 reg_devs[10].pdata_size = sizeof(struct regulator_init_data);
841         }
842         if (pdata->ldo9) {
843                 reg_devs[11].platform_data = pdata->ldo9;
844                 reg_devs[11].pdata_size = sizeof(struct regulator_init_data);
845         }
846         if (pdata->ldo10) {
847                 reg_devs[12].platform_data = pdata->ldo10;
848                 reg_devs[12].pdata_size = sizeof(struct regulator_init_data);
849         }
850         if (pdata->ldo12) {
851                 reg_devs[13].platform_data = pdata->ldo12;
852                 reg_devs[13].pdata_size = sizeof(struct regulator_init_data);
853         }
854         if (pdata->ldo_vibrator) {
855                 reg_devs[14].platform_data = pdata->ldo_vibrator;
856                 reg_devs[14].pdata_size = sizeof(struct regulator_init_data);
857         }
858         if (pdata->ldo14) {
859                 reg_devs[15].platform_data = pdata->ldo14;
860                 reg_devs[15].pdata_size = sizeof(struct regulator_init_data);
861         }
862         ret = mfd_add_devices(chip->dev, 0, reg_devs,
863                               ARRAY_SIZE(reg_devs), NULL, 0, NULL);
864         if (ret < 0) {
865                 dev_err(chip->dev, "Failed to add regulator subdev\n");
866                 return;
867         }
868 }
869
870 static void device_rtc_init(struct pm860x_chip *chip,
871                                       struct pm860x_platform_data *pdata)
872 {
873         int ret;
874
875         if (!pdata)
876                 return;
877
878         rtc_devs[0].platform_data = pdata->rtc;
879         rtc_devs[0].pdata_size = sizeof(struct pm860x_rtc_pdata);
880         rtc_devs[0].num_resources = ARRAY_SIZE(rtc_resources);
881         rtc_devs[0].resources = &rtc_resources[0];
882         ret = mfd_add_devices(chip->dev, 0, &rtc_devs[0],
883                               ARRAY_SIZE(rtc_devs), &rtc_resources[0],
884                               chip->irq_base, NULL);
885         if (ret < 0)
886                 dev_err(chip->dev, "Failed to add rtc subdev\n");
887 }
888
889 static void device_touch_init(struct pm860x_chip *chip,
890                                         struct pm860x_platform_data *pdata)
891 {
892         int ret;
893
894         if (pdata == NULL)
895                 return;
896
897         touch_devs[0].platform_data = pdata->touch;
898         touch_devs[0].pdata_size = sizeof(struct pm860x_touch_pdata);
899         touch_devs[0].num_resources = ARRAY_SIZE(touch_resources);
900         touch_devs[0].resources = &touch_resources[0];
901         ret = mfd_add_devices(chip->dev, 0, &touch_devs[0],
902                               ARRAY_SIZE(touch_devs), &touch_resources[0],
903                               chip->irq_base, NULL);
904         if (ret < 0)
905                 dev_err(chip->dev, "Failed to add touch subdev\n");
906 }
907
908 static void device_power_init(struct pm860x_chip *chip,
909                                         struct pm860x_platform_data *pdata)
910 {
911         int ret;
912
913         if (pdata == NULL)
914                 return;
915
916         power_devs[0].platform_data = pdata->power;
917         power_devs[0].pdata_size = sizeof(struct pm860x_power_pdata);
918         power_devs[0].num_resources = ARRAY_SIZE(battery_resources);
919         power_devs[0].resources = &battery_resources[0],
920         ret = mfd_add_devices(chip->dev, 0, &power_devs[0], 1,
921                               &battery_resources[0], chip->irq_base, NULL);
922         if (ret < 0)
923                 dev_err(chip->dev, "Failed to add battery subdev\n");
924
925         power_devs[1].platform_data = pdata->power;
926         power_devs[1].pdata_size = sizeof(struct pm860x_power_pdata);
927         power_devs[1].num_resources = ARRAY_SIZE(charger_resources);
928         power_devs[1].resources = &charger_resources[0],
929         ret = mfd_add_devices(chip->dev, 0, &power_devs[1], 1,
930                               &charger_resources[0], chip->irq_base, NULL);
931         if (ret < 0)
932                 dev_err(chip->dev, "Failed to add charger subdev\n");
933
934         power_devs[2].platform_data = &preg_init_data;
935         power_devs[2].pdata_size = sizeof(struct regulator_init_data);
936         ret = mfd_add_devices(chip->dev, 0, &power_devs[2], 1,
937                               NULL, chip->irq_base, NULL);
938         if (ret < 0)
939                 dev_err(chip->dev, "Failed to add preg subdev\n");
940
941         if (pdata->chg_desc) {
942                 pdata->chg_desc->charger_regulators =
943                         &chg_desc_regulator_data[0];
944                 pdata->chg_desc->num_charger_regulators =
945                         ARRAY_SIZE(chg_desc_regulator_data),
946                 power_devs[3].platform_data = pdata->chg_desc;
947                 power_devs[3].pdata_size = sizeof(*pdata->chg_desc);
948                 ret = mfd_add_devices(chip->dev, 0, &power_devs[3], 1,
949                                       NULL, chip->irq_base, NULL);
950                 if (ret < 0)
951                         dev_err(chip->dev, "Failed to add chg-manager subdev\n");
952         }
953 }
954
955 static void device_onkey_init(struct pm860x_chip *chip,
956                                         struct pm860x_platform_data *pdata)
957 {
958         int ret;
959
960         onkey_devs[0].num_resources = ARRAY_SIZE(onkey_resources);
961         onkey_devs[0].resources = &onkey_resources[0],
962         ret = mfd_add_devices(chip->dev, 0, &onkey_devs[0],
963                               ARRAY_SIZE(onkey_devs), &onkey_resources[0],
964                               chip->irq_base, NULL);
965         if (ret < 0)
966                 dev_err(chip->dev, "Failed to add onkey subdev\n");
967 }
968
969 static void device_codec_init(struct pm860x_chip *chip,
970                                         struct pm860x_platform_data *pdata)
971 {
972         int ret;
973
974         codec_devs[0].num_resources = ARRAY_SIZE(codec_resources);
975         codec_devs[0].resources = &codec_resources[0],
976         ret = mfd_add_devices(chip->dev, 0, &codec_devs[0],
977                               ARRAY_SIZE(codec_devs), &codec_resources[0], 0,
978                               NULL);
979         if (ret < 0)
980                 dev_err(chip->dev, "Failed to add codec subdev\n");
981 }
982
983 static void device_8607_init(struct pm860x_chip *chip,
984                                        struct i2c_client *i2c,
985                                        struct pm860x_platform_data *pdata)
986 {
987         int data, ret;
988
989         ret = pm860x_reg_read(i2c, PM8607_CHIP_ID);
990         if (ret < 0) {
991                 dev_err(chip->dev, "Failed to read CHIP ID: %d\n", ret);
992                 goto out;
993         }
994         switch (ret & PM8607_VERSION_MASK) {
995         case 0x40:
996         case 0x50:
997                 dev_info(chip->dev, "Marvell 88PM8607 (ID: %02x) detected\n",
998                          ret);
999                 break;
1000         default:
1001                 dev_err(chip->dev,
1002                         "Failed to detect Marvell 88PM8607. Chip ID: %02x\n",
1003                         ret);
1004                 goto out;
1005         }
1006
1007         ret = pm860x_reg_read(i2c, PM8607_BUCK3);
1008         if (ret < 0) {
1009                 dev_err(chip->dev, "Failed to read BUCK3 register: %d\n", ret);
1010                 goto out;
1011         }
1012         if (ret & PM8607_BUCK3_DOUBLE)
1013                 chip->buck3_double = 1;
1014
1015         ret = pm860x_reg_read(i2c, PM8607_B0_MISC1);
1016         if (ret < 0) {
1017                 dev_err(chip->dev, "Failed to read MISC1 register: %d\n", ret);
1018                 goto out;
1019         }
1020
1021         if (pdata && (pdata->i2c_port == PI2C_PORT))
1022                 data = PM8607_B0_MISC1_PI2C;
1023         else
1024                 data = 0;
1025         ret = pm860x_set_bits(i2c, PM8607_B0_MISC1, PM8607_B0_MISC1_PI2C, data);
1026         if (ret < 0) {
1027                 dev_err(chip->dev, "Failed to access MISC1:%d\n", ret);
1028                 goto out;
1029         }
1030
1031         ret = device_irq_init(chip, pdata);
1032         if (ret < 0)
1033                 goto out;
1034
1035         device_regulator_init(chip, pdata);
1036         device_rtc_init(chip, pdata);
1037         device_onkey_init(chip, pdata);
1038         device_touch_init(chip, pdata);
1039         device_power_init(chip, pdata);
1040         device_codec_init(chip, pdata);
1041 out:
1042         return;
1043 }
1044
1045 static void device_8606_init(struct pm860x_chip *chip,
1046                                        struct i2c_client *i2c,
1047                                        struct pm860x_platform_data *pdata)
1048 {
1049         device_osc_init(i2c);
1050         device_bk_init(chip, pdata);
1051         device_led_init(chip, pdata);
1052 }
1053
1054 static int pm860x_device_init(struct pm860x_chip *chip,
1055                                         struct pm860x_platform_data *pdata)
1056 {
1057         chip->core_irq = 0;
1058
1059         switch (chip->id) {
1060         case CHIP_PM8606:
1061                 device_8606_init(chip, chip->client, pdata);
1062                 break;
1063         case CHIP_PM8607:
1064                 device_8607_init(chip, chip->client, pdata);
1065                 break;
1066         }
1067
1068         if (chip->companion) {
1069                 switch (chip->id) {
1070                 case CHIP_PM8607:
1071                         device_8606_init(chip, chip->companion, pdata);
1072                         break;
1073                 case CHIP_PM8606:
1074                         device_8607_init(chip, chip->companion, pdata);
1075                         break;
1076                 }
1077         }
1078
1079         return 0;
1080 }
1081
1082 static void pm860x_device_exit(struct pm860x_chip *chip)
1083 {
1084         device_irq_exit(chip);
1085         mfd_remove_devices(chip->dev);
1086 }
1087
1088 static int verify_addr(struct i2c_client *i2c)
1089 {
1090         unsigned short addr_8607[] = {0x30, 0x34};
1091         unsigned short addr_8606[] = {0x10, 0x11};
1092         int size, i;
1093
1094         if (i2c == NULL)
1095                 return 0;
1096         size = ARRAY_SIZE(addr_8606);
1097         for (i = 0; i < size; i++) {
1098                 if (i2c->addr == *(addr_8606 + i))
1099                         return CHIP_PM8606;
1100         }
1101         size = ARRAY_SIZE(addr_8607);
1102         for (i = 0; i < size; i++) {
1103                 if (i2c->addr == *(addr_8607 + i))
1104                         return CHIP_PM8607;
1105         }
1106         return 0;
1107 }
1108
1109 static const struct regmap_config pm860x_regmap_config = {
1110         .reg_bits = 8,
1111         .val_bits = 8,
1112 };
1113
1114 static int pm860x_dt_init(struct device_node *np,
1115                                     struct device *dev,
1116                                     struct pm860x_platform_data *pdata)
1117 {
1118         int ret;
1119
1120         if (of_get_property(np, "marvell,88pm860x-irq-read-clr", NULL))
1121                 pdata->irq_mode = 1;
1122         ret = of_property_read_u32(np, "marvell,88pm860x-slave-addr",
1123                                    &pdata->companion_addr);
1124         if (ret) {
1125                 dev_err(dev,
1126                         "Not found \"marvell,88pm860x-slave-addr\" property\n");
1127                 pdata->companion_addr = 0;
1128         }
1129         return 0;
1130 }
1131
1132 static int pm860x_probe(struct i2c_client *client)
1133 {
1134         struct pm860x_platform_data *pdata = dev_get_platdata(&client->dev);
1135         struct device_node *node = client->dev.of_node;
1136         struct pm860x_chip *chip;
1137         int ret;
1138
1139         if (node && !pdata) {
1140                 /* parse DT to get platform data */
1141                 pdata = devm_kzalloc(&client->dev,
1142                                      sizeof(struct pm860x_platform_data),
1143                                      GFP_KERNEL);
1144                 if (!pdata)
1145                         return -ENOMEM;
1146                 ret = pm860x_dt_init(node, &client->dev, pdata);
1147                 if (ret)
1148                         return ret;
1149         } else if (!pdata) {
1150                 pr_info("No platform data in %s!\n", __func__);
1151                 return -EINVAL;
1152         }
1153
1154         chip = devm_kzalloc(&client->dev,
1155                             sizeof(struct pm860x_chip), GFP_KERNEL);
1156         if (chip == NULL)
1157                 return -ENOMEM;
1158
1159         chip->id = verify_addr(client);
1160         chip->regmap = devm_regmap_init_i2c(client, &pm860x_regmap_config);
1161         if (IS_ERR(chip->regmap)) {
1162                 ret = PTR_ERR(chip->regmap);
1163                 dev_err(&client->dev, "Failed to allocate register map: %d\n",
1164                                 ret);
1165                 return ret;
1166         }
1167         chip->client = client;
1168         i2c_set_clientdata(client, chip);
1169         chip->dev = &client->dev;
1170         dev_set_drvdata(chip->dev, chip);
1171
1172         /*
1173          * Both client and companion client shares same platform driver.
1174          * Driver distinguishes them by pdata->companion_addr.
1175          * pdata->companion_addr is only assigned if companion chip exists.
1176          * At the same time, the companion_addr shouldn't equal to client
1177          * address.
1178          */
1179         if (pdata->companion_addr && (pdata->companion_addr != client->addr)) {
1180                 chip->companion_addr = pdata->companion_addr;
1181                 chip->companion = i2c_new_dummy_device(chip->client->adapter,
1182                                                 chip->companion_addr);
1183                 if (IS_ERR(chip->companion)) {
1184                         dev_err(&client->dev,
1185                                 "Failed to allocate I2C companion device\n");
1186                         return PTR_ERR(chip->companion);
1187                 }
1188                 chip->regmap_companion = regmap_init_i2c(chip->companion,
1189                                                         &pm860x_regmap_config);
1190                 if (IS_ERR(chip->regmap_companion)) {
1191                         ret = PTR_ERR(chip->regmap_companion);
1192                         dev_err(&chip->companion->dev,
1193                                 "Failed to allocate register map: %d\n", ret);
1194                         i2c_unregister_device(chip->companion);
1195                         return ret;
1196                 }
1197                 i2c_set_clientdata(chip->companion, chip);
1198         }
1199
1200         pm860x_device_init(chip, pdata);
1201         return 0;
1202 }
1203
1204 static int pm860x_remove(struct i2c_client *client)
1205 {
1206         struct pm860x_chip *chip = i2c_get_clientdata(client);
1207
1208         pm860x_device_exit(chip);
1209         if (chip->companion) {
1210                 regmap_exit(chip->regmap_companion);
1211                 i2c_unregister_device(chip->companion);
1212         }
1213         return 0;
1214 }
1215
1216 #ifdef CONFIG_PM_SLEEP
1217 static int pm860x_suspend(struct device *dev)
1218 {
1219         struct i2c_client *client = to_i2c_client(dev);
1220         struct pm860x_chip *chip = i2c_get_clientdata(client);
1221
1222         if (device_may_wakeup(dev) && chip->wakeup_flag)
1223                 enable_irq_wake(chip->core_irq);
1224         return 0;
1225 }
1226
1227 static int pm860x_resume(struct device *dev)
1228 {
1229         struct i2c_client *client = to_i2c_client(dev);
1230         struct pm860x_chip *chip = i2c_get_clientdata(client);
1231
1232         if (device_may_wakeup(dev) && chip->wakeup_flag)
1233                 disable_irq_wake(chip->core_irq);
1234         return 0;
1235 }
1236 #endif
1237
1238 static SIMPLE_DEV_PM_OPS(pm860x_pm_ops, pm860x_suspend, pm860x_resume);
1239
1240 static const struct i2c_device_id pm860x_id_table[] = {
1241         { "88PM860x", 0 },
1242         {}
1243 };
1244 MODULE_DEVICE_TABLE(i2c, pm860x_id_table);
1245
1246 static const struct of_device_id pm860x_dt_ids[] = {
1247         { .compatible = "marvell,88pm860x", },
1248         {},
1249 };
1250 MODULE_DEVICE_TABLE(of, pm860x_dt_ids);
1251
1252 static struct i2c_driver pm860x_driver = {
1253         .driver = {
1254                 .name   = "88PM860x",
1255                 .pm     = &pm860x_pm_ops,
1256                 .of_match_table = pm860x_dt_ids,
1257         },
1258         .probe_new      = pm860x_probe,
1259         .remove         = pm860x_remove,
1260         .id_table       = pm860x_id_table,
1261 };
1262
1263 static int __init pm860x_i2c_init(void)
1264 {
1265         int ret;
1266
1267         ret = i2c_add_driver(&pm860x_driver);
1268         if (ret != 0)
1269                 pr_err("Failed to register 88PM860x I2C driver: %d\n", ret);
1270         return ret;
1271 }
1272 subsys_initcall(pm860x_i2c_init);
1273
1274 static void __exit pm860x_i2c_exit(void)
1275 {
1276         i2c_del_driver(&pm860x_driver);
1277 }
1278 module_exit(pm860x_i2c_exit);
1279
1280 MODULE_DESCRIPTION("PMIC Driver for Marvell 88PM860x");
1281 MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
1282 MODULE_LICENSE("GPL");