Version:  2.0.40 2.2.26 2.4.37 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18

Linux/drivers/mfd/88pm860x-core.c

  1 /*
  2  * Base driver for Marvell 88PM8607
  3  *
  4  * Copyright (C) 2009 Marvell International Ltd.
  5  *
  6  * Author: Haojian Zhuang <haojian.zhuang@marvell.com>
  7  *
  8  * This program is free software; you can redistribute it and/or modify
  9  * it under the terms of the GNU General Public License version 2 as
 10  * published by the Free Software Foundation.
 11  */
 12 
 13 #include <linux/kernel.h>
 14 #include <linux/module.h>
 15 #include <linux/err.h>
 16 #include <linux/i2c.h>
 17 #include <linux/irq.h>
 18 #include <linux/interrupt.h>
 19 #include <linux/irqdomain.h>
 20 #include <linux/of.h>
 21 #include <linux/of_platform.h>
 22 #include <linux/platform_device.h>
 23 #include <linux/regmap.h>
 24 #include <linux/slab.h>
 25 #include <linux/mfd/core.h>
 26 #include <linux/mfd/88pm860x.h>
 27 #include <linux/regulator/machine.h>
 28 #include <linux/power/charger-manager.h>
 29 
 30 #define INT_STATUS_NUM                  3
 31 
 32 static struct resource bk0_resources[] = {
 33         {2, 2, "duty cycle", IORESOURCE_REG, },
 34         {3, 3, "always on",  IORESOURCE_REG, },
 35         {3, 3, "current",    IORESOURCE_REG, },
 36 };
 37 static struct resource bk1_resources[] = {
 38         {4, 4, "duty cycle", IORESOURCE_REG, },
 39         {5, 5, "always on",  IORESOURCE_REG, },
 40         {5, 5, "current",    IORESOURCE_REG, },
 41 };
 42 static struct resource bk2_resources[] = {
 43         {6, 6, "duty cycle", IORESOURCE_REG, },
 44         {7, 7, "always on",  IORESOURCE_REG, },
 45         {5, 5, "current",    IORESOURCE_REG, },
 46 };
 47 
 48 static struct resource led0_resources[] = {
 49         /* RGB1 Red LED */
 50         {0xd, 0xd, "control", IORESOURCE_REG, },
 51         {0xc, 0xc, "blink",   IORESOURCE_REG, },
 52 };
 53 static struct resource led1_resources[] = {
 54         /* RGB1 Green LED */
 55         {0xe, 0xe, "control", IORESOURCE_REG, },
 56         {0xc, 0xc, "blink",   IORESOURCE_REG, },
 57 };
 58 static struct resource led2_resources[] = {
 59         /* RGB1 Blue LED */
 60         {0xf, 0xf, "control", IORESOURCE_REG, },
 61         {0xc, 0xc, "blink",   IORESOURCE_REG, },
 62 };
 63 static struct resource led3_resources[] = {
 64         /* RGB2 Red LED */
 65         {0x9, 0x9, "control", IORESOURCE_REG, },
 66         {0x8, 0x8, "blink",   IORESOURCE_REG, },
 67 };
 68 static struct resource led4_resources[] = {
 69         /* RGB2 Green LED */
 70         {0xa, 0xa, "control", IORESOURCE_REG, },
 71         {0x8, 0x8, "blink",   IORESOURCE_REG, },
 72 };
 73 static struct resource led5_resources[] = {
 74         /* RGB2 Blue LED */
 75         {0xb, 0xb, "control", IORESOURCE_REG, },
 76         {0x8, 0x8, "blink",   IORESOURCE_REG, },
 77 };
 78 
 79 static struct resource buck1_resources[] = {
 80         {0x24, 0x24, "buck set", IORESOURCE_REG, },
 81 };
 82 static struct resource buck2_resources[] = {
 83         {0x25, 0x25, "buck set", IORESOURCE_REG, },
 84 };
 85 static struct resource buck3_resources[] = {
 86         {0x26, 0x26, "buck set", IORESOURCE_REG, },
 87 };
 88 static struct resource ldo1_resources[] = {
 89         {0x10, 0x10, "ldo set", IORESOURCE_REG, },
 90 };
 91 static struct resource ldo2_resources[] = {
 92         {0x11, 0x11, "ldo set", IORESOURCE_REG, },
 93 };
 94 static struct resource ldo3_resources[] = {
 95         {0x12, 0x12, "ldo set", IORESOURCE_REG, },
 96 };
 97 static struct resource ldo4_resources[] = {
 98         {0x13, 0x13, "ldo set", IORESOURCE_REG, },
 99 };
100 static struct resource ldo5_resources[] = {
101         {0x14, 0x14, "ldo set", IORESOURCE_REG, },
102 };
103 static struct resource ldo6_resources[] = {
104         {0x15, 0x15, "ldo set", IORESOURCE_REG, },
105 };
106 static struct resource ldo7_resources[] = {
107         {0x16, 0x16, "ldo set", IORESOURCE_REG, },
108 };
109 static struct resource ldo8_resources[] = {
110         {0x17, 0x17, "ldo set", IORESOURCE_REG, },
111 };
112 static struct resource ldo9_resources[] = {
113         {0x18, 0x18, "ldo set", IORESOURCE_REG, },
114 };
115 static struct resource ldo10_resources[] = {
116         {0x19, 0x19, "ldo set", IORESOURCE_REG, },
117 };
118 static struct resource ldo12_resources[] = {
119         {0x1a, 0x1a, "ldo set", IORESOURCE_REG, },
120 };
121 static struct resource ldo_vibrator_resources[] = {
122         {0x28, 0x28, "ldo set", IORESOURCE_REG, },
123 };
124 static struct resource ldo14_resources[] = {
125         {0x1b, 0x1b, "ldo set", IORESOURCE_REG, },
126 };
127 
128 static struct resource touch_resources[] = {
129         {PM8607_IRQ_PEN, PM8607_IRQ_PEN, "touch", IORESOURCE_IRQ,},
130 };
131 
132 static struct resource onkey_resources[] = {
133         {PM8607_IRQ_ONKEY, PM8607_IRQ_ONKEY, "onkey", IORESOURCE_IRQ,},
134 };
135 
136 static struct resource codec_resources[] = {
137         /* Headset microphone insertion or removal */
138         {PM8607_IRQ_MICIN,   PM8607_IRQ_MICIN,   "micin",   IORESOURCE_IRQ,},
139         /* Hook-switch press or release */
140         {PM8607_IRQ_HOOK,    PM8607_IRQ_HOOK,    "hook",    IORESOURCE_IRQ,},
141         /* Headset insertion or removal */
142         {PM8607_IRQ_HEADSET, PM8607_IRQ_HEADSET, "headset", IORESOURCE_IRQ,},
143         /* Audio short */
144         {PM8607_IRQ_AUDIO_SHORT, PM8607_IRQ_AUDIO_SHORT, "audio-short",
145          IORESOURCE_IRQ,},
146 };
147 
148 static struct resource battery_resources[] = {
149         {PM8607_IRQ_CC,  PM8607_IRQ_CC,  "columb counter", IORESOURCE_IRQ,},
150         {PM8607_IRQ_BAT, PM8607_IRQ_BAT, "battery",        IORESOURCE_IRQ,},
151 };
152 
153 static struct resource charger_resources[] = {
154         {PM8607_IRQ_CHG,  PM8607_IRQ_CHG,  "charger detect",  IORESOURCE_IRQ,},
155         {PM8607_IRQ_CHG_DONE,  PM8607_IRQ_CHG_DONE,  "charging done",
156          IORESOURCE_IRQ,},
157         {PM8607_IRQ_CHG_FAIL,  PM8607_IRQ_CHG_FAIL,  "charging timeout",
158          IORESOURCE_IRQ,},
159         {PM8607_IRQ_CHG_FAULT, PM8607_IRQ_CHG_FAULT, "charging fault",
160          IORESOURCE_IRQ,},
161         {PM8607_IRQ_GPADC1,    PM8607_IRQ_GPADC1,    "battery temperature",
162          IORESOURCE_IRQ,},
163         {PM8607_IRQ_VBAT, PM8607_IRQ_VBAT, "battery voltage", IORESOURCE_IRQ,},
164         {PM8607_IRQ_VCHG, PM8607_IRQ_VCHG, "vchg voltage",    IORESOURCE_IRQ,},
165 };
166 
167 static struct resource rtc_resources[] = {
168         {PM8607_IRQ_RTC, PM8607_IRQ_RTC, "rtc", IORESOURCE_IRQ,},
169 };
170 
171 static struct mfd_cell bk_devs[] = {
172         {
173                 .name = "88pm860x-backlight",
174                 .id = 0,
175                 .num_resources = ARRAY_SIZE(bk0_resources),
176                 .resources = bk0_resources,
177         }, {
178                 .name = "88pm860x-backlight",
179                 .id = 1,
180                 .num_resources = ARRAY_SIZE(bk1_resources),
181                 .resources = bk1_resources,
182         }, {
183                 .name = "88pm860x-backlight",
184                 .id = 2,
185                 .num_resources = ARRAY_SIZE(bk2_resources),
186                 .resources = bk2_resources,
187         },
188 };
189 
190 static struct mfd_cell led_devs[] = {
191         {
192                 .name = "88pm860x-led",
193                 .id = 0,
194                 .num_resources = ARRAY_SIZE(led0_resources),
195                 .resources = led0_resources,
196         }, {
197                 .name = "88pm860x-led",
198                 .id = 1,
199                 .num_resources = ARRAY_SIZE(led1_resources),
200                 .resources = led1_resources,
201         }, {
202                 .name = "88pm860x-led",
203                 .id = 2,
204                 .num_resources = ARRAY_SIZE(led2_resources),
205                 .resources = led2_resources,
206         }, {
207                 .name = "88pm860x-led",
208                 .id = 3,
209                 .num_resources = ARRAY_SIZE(led3_resources),
210                 .resources = led3_resources,
211         }, {
212                 .name = "88pm860x-led",
213                 .id = 4,
214                 .num_resources = ARRAY_SIZE(led4_resources),
215                 .resources = led4_resources,
216         }, {
217                 .name = "88pm860x-led",
218                 .id = 5,
219                 .num_resources = ARRAY_SIZE(led5_resources),
220                 .resources = led5_resources,
221         },
222 };
223 
224 static struct mfd_cell reg_devs[] = {
225         {
226                 .name = "88pm860x-regulator",
227                 .id = 0,
228                 .num_resources = ARRAY_SIZE(buck1_resources),
229                 .resources = buck1_resources,
230         }, {
231                 .name = "88pm860x-regulator",
232                 .id = 1,
233                 .num_resources = ARRAY_SIZE(buck2_resources),
234                 .resources = buck2_resources,
235         }, {
236                 .name = "88pm860x-regulator",
237                 .id = 2,
238                 .num_resources = ARRAY_SIZE(buck3_resources),
239                 .resources = buck3_resources,
240         }, {
241                 .name = "88pm860x-regulator",
242                 .id = 3,
243                 .num_resources = ARRAY_SIZE(ldo1_resources),
244                 .resources = ldo1_resources,
245         }, {
246                 .name = "88pm860x-regulator",
247                 .id = 4,
248                 .num_resources = ARRAY_SIZE(ldo2_resources),
249                 .resources = ldo2_resources,
250         }, {
251                 .name = "88pm860x-regulator",
252                 .id = 5,
253                 .num_resources = ARRAY_SIZE(ldo3_resources),
254                 .resources = ldo3_resources,
255         }, {
256                 .name = "88pm860x-regulator",
257                 .id = 6,
258                 .num_resources = ARRAY_SIZE(ldo4_resources),
259                 .resources = ldo4_resources,
260         }, {
261                 .name = "88pm860x-regulator",
262                 .id = 7,
263                 .num_resources = ARRAY_SIZE(ldo5_resources),
264                 .resources = ldo5_resources,
265         }, {
266                 .name = "88pm860x-regulator",
267                 .id = 8,
268                 .num_resources = ARRAY_SIZE(ldo6_resources),
269                 .resources = ldo6_resources,
270         }, {
271                 .name = "88pm860x-regulator",
272                 .id = 9,
273                 .num_resources = ARRAY_SIZE(ldo7_resources),
274                 .resources = ldo7_resources,
275         }, {
276                 .name = "88pm860x-regulator",
277                 .id = 10,
278                 .num_resources = ARRAY_SIZE(ldo8_resources),
279                 .resources = ldo8_resources,
280         }, {
281                 .name = "88pm860x-regulator",
282                 .id = 11,
283                 .num_resources = ARRAY_SIZE(ldo9_resources),
284                 .resources = ldo9_resources,
285         }, {
286                 .name = "88pm860x-regulator",
287                 .id = 12,
288                 .num_resources = ARRAY_SIZE(ldo10_resources),
289                 .resources = ldo10_resources,
290         }, {
291                 .name = "88pm860x-regulator",
292                 .id = 13,
293                 .num_resources = ARRAY_SIZE(ldo12_resources),
294                 .resources = ldo12_resources,
295         }, {
296                 .name = "88pm860x-regulator",
297                 .id = 14,
298                 .num_resources = ARRAY_SIZE(ldo_vibrator_resources),
299                 .resources = ldo_vibrator_resources,
300         }, {
301                 .name = "88pm860x-regulator",
302                 .id = 15,
303                 .num_resources = ARRAY_SIZE(ldo14_resources),
304                 .resources = ldo14_resources,
305         },
306 };
307 
308 static struct mfd_cell touch_devs[] = {
309         {"88pm860x-touch", -1,},
310 };
311 
312 static struct mfd_cell onkey_devs[] = {
313         {"88pm860x-onkey", -1,},
314 };
315 
316 static struct mfd_cell codec_devs[] = {
317         {"88pm860x-codec", -1,},
318 };
319 
320 static struct regulator_consumer_supply preg_supply[] = {
321         REGULATOR_SUPPLY("preg", "charger-manager"),
322 };
323 
324 static struct regulator_init_data preg_init_data = {
325         .num_consumer_supplies  = ARRAY_SIZE(preg_supply),
326         .consumer_supplies      = &preg_supply[0],
327 };
328 
329 static struct charger_regulator chg_desc_regulator_data[] = {
330         { .regulator_name = "preg", },
331 };
332 
333 static struct mfd_cell power_devs[] = {
334         {"88pm860x-battery", -1,},
335         {"88pm860x-charger", -1,},
336         {"88pm860x-preg",    -1,},
337         {"charger-manager", -1,},
338 };
339 
340 static struct mfd_cell rtc_devs[] = {
341         {"88pm860x-rtc", -1,},
342 };
343 
344 
345 struct pm860x_irq_data {
346         int     reg;
347         int     mask_reg;
348         int     enable;         /* enable or not */
349         int     offs;           /* bit offset in mask register */
350 };
351 
352 static struct pm860x_irq_data pm860x_irqs[] = {
353         [PM8607_IRQ_ONKEY] = {
354                 .reg            = PM8607_INT_STATUS1,
355                 .mask_reg       = PM8607_INT_MASK_1,
356                 .offs           = 1 << 0,
357         },
358         [PM8607_IRQ_EXTON] = {
359                 .reg            = PM8607_INT_STATUS1,
360                 .mask_reg       = PM8607_INT_MASK_1,
361                 .offs           = 1 << 1,
362         },
363         [PM8607_IRQ_CHG] = {
364                 .reg            = PM8607_INT_STATUS1,
365                 .mask_reg       = PM8607_INT_MASK_1,
366                 .offs           = 1 << 2,
367         },
368         [PM8607_IRQ_BAT] = {
369                 .reg            = PM8607_INT_STATUS1,
370                 .mask_reg       = PM8607_INT_MASK_1,
371                 .offs           = 1 << 3,
372         },
373         [PM8607_IRQ_RTC] = {
374                 .reg            = PM8607_INT_STATUS1,
375                 .mask_reg       = PM8607_INT_MASK_1,
376                 .offs           = 1 << 4,
377         },
378         [PM8607_IRQ_CC] = {
379                 .reg            = PM8607_INT_STATUS1,
380                 .mask_reg       = PM8607_INT_MASK_1,
381                 .offs           = 1 << 5,
382         },
383         [PM8607_IRQ_VBAT] = {
384                 .reg            = PM8607_INT_STATUS2,
385                 .mask_reg       = PM8607_INT_MASK_2,
386                 .offs           = 1 << 0,
387         },
388         [PM8607_IRQ_VCHG] = {
389                 .reg            = PM8607_INT_STATUS2,
390                 .mask_reg       = PM8607_INT_MASK_2,
391                 .offs           = 1 << 1,
392         },
393         [PM8607_IRQ_VSYS] = {
394                 .reg            = PM8607_INT_STATUS2,
395                 .mask_reg       = PM8607_INT_MASK_2,
396                 .offs           = 1 << 2,
397         },
398         [PM8607_IRQ_TINT] = {
399                 .reg            = PM8607_INT_STATUS2,
400                 .mask_reg       = PM8607_INT_MASK_2,
401                 .offs           = 1 << 3,
402         },
403         [PM8607_IRQ_GPADC0] = {
404                 .reg            = PM8607_INT_STATUS2,
405                 .mask_reg       = PM8607_INT_MASK_2,
406                 .offs           = 1 << 4,
407         },
408         [PM8607_IRQ_GPADC1] = {
409                 .reg            = PM8607_INT_STATUS2,
410                 .mask_reg       = PM8607_INT_MASK_2,
411                 .offs           = 1 << 5,
412         },
413         [PM8607_IRQ_GPADC2] = {
414                 .reg            = PM8607_INT_STATUS2,
415                 .mask_reg       = PM8607_INT_MASK_2,
416                 .offs           = 1 << 6,
417         },
418         [PM8607_IRQ_GPADC3] = {
419                 .reg            = PM8607_INT_STATUS2,
420                 .mask_reg       = PM8607_INT_MASK_2,
421                 .offs           = 1 << 7,
422         },
423         [PM8607_IRQ_AUDIO_SHORT] = {
424                 .reg            = PM8607_INT_STATUS3,
425                 .mask_reg       = PM8607_INT_MASK_3,
426                 .offs           = 1 << 0,
427         },
428         [PM8607_IRQ_PEN] = {
429                 .reg            = PM8607_INT_STATUS3,
430                 .mask_reg       = PM8607_INT_MASK_3,
431                 .offs           = 1 << 1,
432         },
433         [PM8607_IRQ_HEADSET] = {
434                 .reg            = PM8607_INT_STATUS3,
435                 .mask_reg       = PM8607_INT_MASK_3,
436                 .offs           = 1 << 2,
437         },
438         [PM8607_IRQ_HOOK] = {
439                 .reg            = PM8607_INT_STATUS3,
440                 .mask_reg       = PM8607_INT_MASK_3,
441                 .offs           = 1 << 3,
442         },
443         [PM8607_IRQ_MICIN] = {
444                 .reg            = PM8607_INT_STATUS3,
445                 .mask_reg       = PM8607_INT_MASK_3,
446                 .offs           = 1 << 4,
447         },
448         [PM8607_IRQ_CHG_FAIL] = {
449                 .reg            = PM8607_INT_STATUS3,
450                 .mask_reg       = PM8607_INT_MASK_3,
451                 .offs           = 1 << 5,
452         },
453         [PM8607_IRQ_CHG_DONE] = {
454                 .reg            = PM8607_INT_STATUS3,
455                 .mask_reg       = PM8607_INT_MASK_3,
456                 .offs           = 1 << 6,
457         },
458         [PM8607_IRQ_CHG_FAULT] = {
459                 .reg            = PM8607_INT_STATUS3,
460                 .mask_reg       = PM8607_INT_MASK_3,
461                 .offs           = 1 << 7,
462         },
463 };
464 
465 static irqreturn_t pm860x_irq(int irq, void *data)
466 {
467         struct pm860x_chip *chip = data;
468         struct pm860x_irq_data *irq_data;
469         struct i2c_client *i2c;
470         int read_reg = -1, value = 0;
471         int i;
472 
473         i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion;
474         for (i = 0; i < ARRAY_SIZE(pm860x_irqs); i++) {
475                 irq_data = &pm860x_irqs[i];
476                 if (read_reg != irq_data->reg) {
477                         read_reg = irq_data->reg;
478                         value = pm860x_reg_read(i2c, irq_data->reg);
479                 }
480                 if (value & irq_data->enable)
481                         handle_nested_irq(chip->irq_base + i);
482         }
483         return IRQ_HANDLED;
484 }
485 
486 static void pm860x_irq_lock(struct irq_data *data)
487 {
488         struct pm860x_chip *chip = irq_data_get_irq_chip_data(data);
489 
490         mutex_lock(&chip->irq_lock);
491 }
492 
493 static void pm860x_irq_sync_unlock(struct irq_data *data)
494 {
495         struct pm860x_chip *chip = irq_data_get_irq_chip_data(data);
496         struct pm860x_irq_data *irq_data;
497         struct i2c_client *i2c;
498         static unsigned char cached[3] = {0x0, 0x0, 0x0};
499         unsigned char mask[3];
500         int i;
501 
502         i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion;
503         /* Load cached value. In initial, all IRQs are masked */
504         for (i = 0; i < 3; i++)
505                 mask[i] = cached[i];
506         for (i = 0; i < ARRAY_SIZE(pm860x_irqs); i++) {
507                 irq_data = &pm860x_irqs[i];
508                 switch (irq_data->mask_reg) {
509                 case PM8607_INT_MASK_1:
510                         mask[0] &= ~irq_data->offs;
511                         mask[0] |= irq_data->enable;
512                         break;
513                 case PM8607_INT_MASK_2:
514                         mask[1] &= ~irq_data->offs;
515                         mask[1] |= irq_data->enable;
516                         break;
517                 case PM8607_INT_MASK_3:
518                         mask[2] &= ~irq_data->offs;
519                         mask[2] |= irq_data->enable;
520                         break;
521                 default:
522                         dev_err(chip->dev, "wrong IRQ\n");
523                         break;
524                 }
525         }
526         /* update mask into registers */
527         for (i = 0; i < 3; i++) {
528                 if (mask[i] != cached[i]) {
529                         cached[i] = mask[i];
530                         pm860x_reg_write(i2c, PM8607_INT_MASK_1 + i, mask[i]);
531                 }
532         }
533 
534         mutex_unlock(&chip->irq_lock);
535 }
536 
537 static void pm860x_irq_enable(struct irq_data *data)
538 {
539         pm860x_irqs[data->hwirq].enable = pm860x_irqs[data->hwirq].offs;
540 }
541 
542 static void pm860x_irq_disable(struct irq_data *data)
543 {
544         pm860x_irqs[data->hwirq].enable = 0;
545 }
546 
547 static struct irq_chip pm860x_irq_chip = {
548         .name           = "88pm860x",
549         .irq_bus_lock   = pm860x_irq_lock,
550         .irq_bus_sync_unlock = pm860x_irq_sync_unlock,
551         .irq_enable     = pm860x_irq_enable,
552         .irq_disable    = pm860x_irq_disable,
553 };
554 
555 static int pm860x_irq_domain_map(struct irq_domain *d, unsigned int virq,
556                                  irq_hw_number_t hw)
557 {
558         irq_set_chip_data(virq, d->host_data);
559         irq_set_chip_and_handler(virq, &pm860x_irq_chip, handle_edge_irq);
560         irq_set_nested_thread(virq, 1);
561 #ifdef CONFIG_ARM
562         set_irq_flags(virq, IRQF_VALID);
563 #else
564         irq_set_noprobe(virq);
565 #endif
566         return 0;
567 }
568 
569 static struct irq_domain_ops pm860x_irq_domain_ops = {
570         .map    = pm860x_irq_domain_map,
571         .xlate  = irq_domain_xlate_onetwocell,
572 };
573 
574 static int device_irq_init(struct pm860x_chip *chip,
575                                      struct pm860x_platform_data *pdata)
576 {
577         struct i2c_client *i2c = (chip->id == CHIP_PM8607) ?
578                 chip->client : chip->companion;
579         unsigned char status_buf[INT_STATUS_NUM];
580         unsigned long flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT;
581         int data, mask, ret = -EINVAL;
582         int nr_irqs, irq_base = -1;
583         struct device_node *node = i2c->dev.of_node;
584 
585         mask = PM8607_B0_MISC1_INV_INT | PM8607_B0_MISC1_INT_CLEAR
586                 | PM8607_B0_MISC1_INT_MASK;
587         data = 0;
588         chip->irq_mode = 0;
589         if (pdata && pdata->irq_mode) {
590                 /*
591                  * irq_mode defines the way of clearing interrupt. If it's 1,
592                  * clear IRQ by write. Otherwise, clear it by read.
593                  * This control bit is valid from 88PM8607 B0 steping.
594                  */
595                 data |= PM8607_B0_MISC1_INT_CLEAR;
596                 chip->irq_mode = 1;
597         }
598         ret = pm860x_set_bits(i2c, PM8607_B0_MISC1, mask, data);
599         if (ret < 0)
600                 goto out;
601 
602         /* mask all IRQs */
603         memset(status_buf, 0, INT_STATUS_NUM);
604         ret = pm860x_bulk_write(i2c, PM8607_INT_MASK_1,
605                                 INT_STATUS_NUM, status_buf);
606         if (ret < 0)
607                 goto out;
608 
609         if (chip->irq_mode) {
610                 /* clear interrupt status by write */
611                 memset(status_buf, 0xFF, INT_STATUS_NUM);
612                 ret = pm860x_bulk_write(i2c, PM8607_INT_STATUS1,
613                                         INT_STATUS_NUM, status_buf);
614         } else {
615                 /* clear interrupt status by read */
616                 ret = pm860x_bulk_read(i2c, PM8607_INT_STATUS1,
617                                         INT_STATUS_NUM, status_buf);
618         }
619         if (ret < 0)
620                 goto out;
621 
622         mutex_init(&chip->irq_lock);
623 
624         if (pdata && pdata->irq_base)
625                 irq_base = pdata->irq_base;
626         nr_irqs = ARRAY_SIZE(pm860x_irqs);
627         chip->irq_base = irq_alloc_descs(irq_base, 0, nr_irqs, 0);
628         if (chip->irq_base < 0) {
629                 dev_err(&i2c->dev, "Failed to allocate interrupts, ret:%d\n",
630                         chip->irq_base);
631                 ret = -EBUSY;
632                 goto out;
633         }
634         irq_domain_add_legacy(node, nr_irqs, chip->irq_base, 0,
635                               &pm860x_irq_domain_ops, chip);
636         chip->core_irq = i2c->irq;
637         if (!chip->core_irq)
638                 goto out;
639 
640         ret = request_threaded_irq(chip->core_irq, NULL, pm860x_irq,
641                                    flags | IRQF_ONESHOT, "88pm860x", chip);
642         if (ret) {
643                 dev_err(chip->dev, "Failed to request IRQ: %d\n", ret);
644                 chip->core_irq = 0;
645         }
646 
647         return 0;
648 out:
649         chip->core_irq = 0;
650         return ret;
651 }
652 
653 static void device_irq_exit(struct pm860x_chip *chip)
654 {
655         if (chip->core_irq)
656                 free_irq(chip->core_irq, chip);
657 }
658 
659 int pm8606_osc_enable(struct pm860x_chip *chip, unsigned short client)
660 {
661         int ret = -EIO;
662         struct i2c_client *i2c = (chip->id == CHIP_PM8606) ?
663                 chip->client : chip->companion;
664 
665         dev_dbg(chip->dev, "%s(B): client=0x%x\n", __func__, client);
666         dev_dbg(chip->dev, "%s(B): vote=0x%x status=%d\n",
667                         __func__, chip->osc_vote,
668                         chip->osc_status);
669 
670         mutex_lock(&chip->osc_lock);
671         /* Update voting status */
672         chip->osc_vote |= client;
673         /* If reference group is off - turn on*/
674         if (chip->osc_status != PM8606_REF_GP_OSC_ON) {
675                 chip->osc_status = PM8606_REF_GP_OSC_UNKNOWN;
676                 /* Enable Reference group Vsys */
677                 if (pm860x_set_bits(i2c, PM8606_VSYS,
678                                 PM8606_VSYS_EN, PM8606_VSYS_EN))
679                         goto out;
680 
681                 /*Enable Internal Oscillator */
682                 if (pm860x_set_bits(i2c, PM8606_MISC,
683                                 PM8606_MISC_OSC_EN, PM8606_MISC_OSC_EN))
684                         goto out;
685                 /* Update status (only if writes succeed) */
686                 chip->osc_status = PM8606_REF_GP_OSC_ON;
687         }
688         mutex_unlock(&chip->osc_lock);
689 
690         dev_dbg(chip->dev, "%s(A): vote=0x%x status=%d ret=%d\n",
691                         __func__, chip->osc_vote,
692                         chip->osc_status, ret);
693         return 0;
694 out:
695         mutex_unlock(&chip->osc_lock);
696         return ret;
697 }
698 EXPORT_SYMBOL(pm8606_osc_enable);
699 
700 int pm8606_osc_disable(struct pm860x_chip *chip, unsigned short client)
701 {
702         int ret = -EIO;
703         struct i2c_client *i2c = (chip->id == CHIP_PM8606) ?
704                 chip->client : chip->companion;
705 
706         dev_dbg(chip->dev, "%s(B): client=0x%x\n", __func__, client);
707         dev_dbg(chip->dev, "%s(B): vote=0x%x status=%d\n",
708                         __func__, chip->osc_vote,
709                         chip->osc_status);
710 
711         mutex_lock(&chip->osc_lock);
712         /*Update voting status */
713         chip->osc_vote &= ~(client);
714         /* If reference group is off and this is the last client to release
715          * - turn off */
716         if ((chip->osc_status != PM8606_REF_GP_OSC_OFF) &&
717                         (chip->osc_vote == REF_GP_NO_CLIENTS)) {
718                 chip->osc_status = PM8606_REF_GP_OSC_UNKNOWN;
719                 /* Disable Reference group Vsys */
720                 if (pm860x_set_bits(i2c, PM8606_VSYS, PM8606_VSYS_EN, 0))
721                         goto out;
722                 /* Disable Internal Oscillator */
723                 if (pm860x_set_bits(i2c, PM8606_MISC, PM8606_MISC_OSC_EN, 0))
724                         goto out;
725                 chip->osc_status = PM8606_REF_GP_OSC_OFF;
726         }
727         mutex_unlock(&chip->osc_lock);
728 
729         dev_dbg(chip->dev, "%s(A): vote=0x%x status=%d ret=%d\n",
730                         __func__, chip->osc_vote,
731                         chip->osc_status, ret);
732         return 0;
733 out:
734         mutex_unlock(&chip->osc_lock);
735         return ret;
736 }
737 EXPORT_SYMBOL(pm8606_osc_disable);
738 
739 static void device_osc_init(struct i2c_client *i2c)
740 {
741         struct pm860x_chip *chip = i2c_get_clientdata(i2c);
742 
743         mutex_init(&chip->osc_lock);
744         /* init portofino reference group voting and status */
745         /* Disable Reference group Vsys */
746         pm860x_set_bits(i2c, PM8606_VSYS, PM8606_VSYS_EN, 0);
747         /* Disable Internal Oscillator */
748         pm860x_set_bits(i2c, PM8606_MISC, PM8606_MISC_OSC_EN, 0);
749 
750         chip->osc_vote = REF_GP_NO_CLIENTS;
751         chip->osc_status = PM8606_REF_GP_OSC_OFF;
752 }
753 
754 static void device_bk_init(struct pm860x_chip *chip,
755                                      struct pm860x_platform_data *pdata)
756 {
757         int ret, i;
758 
759         if (pdata && pdata->backlight) {
760                 if (pdata->num_backlights > ARRAY_SIZE(bk_devs))
761                         pdata->num_backlights = ARRAY_SIZE(bk_devs);
762                 for (i = 0; i < pdata->num_backlights; i++) {
763                         bk_devs[i].platform_data = &pdata->backlight[i];
764                         bk_devs[i].pdata_size =
765                                 sizeof(struct pm860x_backlight_pdata);
766                 }
767         }
768         ret = mfd_add_devices(chip->dev, 0, bk_devs,
769                               ARRAY_SIZE(bk_devs), NULL, 0, NULL);
770         if (ret < 0)
771                 dev_err(chip->dev, "Failed to add backlight subdev\n");
772 }
773 
774 static void device_led_init(struct pm860x_chip *chip,
775                                       struct pm860x_platform_data *pdata)
776 {
777         int ret, i;
778 
779         if (pdata && pdata->led) {
780                 if (pdata->num_leds > ARRAY_SIZE(led_devs))
781                         pdata->num_leds = ARRAY_SIZE(led_devs);
782                 for (i = 0; i < pdata->num_leds; i++) {
783                         led_devs[i].platform_data = &pdata->led[i];
784                         led_devs[i].pdata_size =
785                                 sizeof(struct pm860x_led_pdata);
786                 }
787         }
788         ret = mfd_add_devices(chip->dev, 0, led_devs,
789                               ARRAY_SIZE(led_devs), NULL, 0, NULL);
790         if (ret < 0) {
791                 dev_err(chip->dev, "Failed to add led subdev\n");
792                 return;
793         }
794 }
795 
796 static void device_regulator_init(struct pm860x_chip *chip,
797                                             struct pm860x_platform_data *pdata)
798 {
799         int ret;
800 
801         if (pdata == NULL)
802                 return;
803         if (pdata->buck1) {
804                 reg_devs[0].platform_data = pdata->buck1;
805                 reg_devs[0].pdata_size = sizeof(struct regulator_init_data);
806         }
807         if (pdata->buck2) {
808                 reg_devs[1].platform_data = pdata->buck2;
809                 reg_devs[1].pdata_size = sizeof(struct regulator_init_data);
810         }
811         if (pdata->buck3) {
812                 reg_devs[2].platform_data = pdata->buck3;
813                 reg_devs[2].pdata_size = sizeof(struct regulator_init_data);
814         }
815         if (pdata->ldo1) {
816                 reg_devs[3].platform_data = pdata->ldo1;
817                 reg_devs[3].pdata_size = sizeof(struct regulator_init_data);
818         }
819         if (pdata->ldo2) {
820                 reg_devs[4].platform_data = pdata->ldo2;
821                 reg_devs[4].pdata_size = sizeof(struct regulator_init_data);
822         }
823         if (pdata->ldo3) {
824                 reg_devs[5].platform_data = pdata->ldo3;
825                 reg_devs[5].pdata_size = sizeof(struct regulator_init_data);
826         }
827         if (pdata->ldo4) {
828                 reg_devs[6].platform_data = pdata->ldo4;
829                 reg_devs[6].pdata_size = sizeof(struct regulator_init_data);
830         }
831         if (pdata->ldo5) {
832                 reg_devs[7].platform_data = pdata->ldo5;
833                 reg_devs[7].pdata_size = sizeof(struct regulator_init_data);
834         }
835         if (pdata->ldo6) {
836                 reg_devs[8].platform_data = pdata->ldo6;
837                 reg_devs[8].pdata_size = sizeof(struct regulator_init_data);
838         }
839         if (pdata->ldo7) {
840                 reg_devs[9].platform_data = pdata->ldo7;
841                 reg_devs[9].pdata_size = sizeof(struct regulator_init_data);
842         }
843         if (pdata->ldo8) {
844                 reg_devs[10].platform_data = pdata->ldo8;
845                 reg_devs[10].pdata_size = sizeof(struct regulator_init_data);
846         }
847         if (pdata->ldo9) {
848                 reg_devs[11].platform_data = pdata->ldo9;
849                 reg_devs[11].pdata_size = sizeof(struct regulator_init_data);
850         }
851         if (pdata->ldo10) {
852                 reg_devs[12].platform_data = pdata->ldo10;
853                 reg_devs[12].pdata_size = sizeof(struct regulator_init_data);
854         }
855         if (pdata->ldo12) {
856                 reg_devs[13].platform_data = pdata->ldo12;
857                 reg_devs[13].pdata_size = sizeof(struct regulator_init_data);
858         }
859         if (pdata->ldo_vibrator) {
860                 reg_devs[14].platform_data = pdata->ldo_vibrator;
861                 reg_devs[14].pdata_size = sizeof(struct regulator_init_data);
862         }
863         if (pdata->ldo14) {
864                 reg_devs[15].platform_data = pdata->ldo14;
865                 reg_devs[15].pdata_size = sizeof(struct regulator_init_data);
866         }
867         ret = mfd_add_devices(chip->dev, 0, reg_devs,
868                               ARRAY_SIZE(reg_devs), NULL, 0, NULL);
869         if (ret < 0) {
870                 dev_err(chip->dev, "Failed to add regulator subdev\n");
871                 return;
872         }
873 }
874 
875 static void device_rtc_init(struct pm860x_chip *chip,
876                                       struct pm860x_platform_data *pdata)
877 {
878         int ret;
879 
880         if (!pdata)
881                 return;
882 
883         rtc_devs[0].platform_data = pdata->rtc;
884         rtc_devs[0].pdata_size = sizeof(struct pm860x_rtc_pdata);
885         rtc_devs[0].num_resources = ARRAY_SIZE(rtc_resources);
886         rtc_devs[0].resources = &rtc_resources[0];
887         ret = mfd_add_devices(chip->dev, 0, &rtc_devs[0],
888                               ARRAY_SIZE(rtc_devs), &rtc_resources[0],
889                               chip->irq_base, NULL);
890         if (ret < 0)
891                 dev_err(chip->dev, "Failed to add rtc subdev\n");
892 }
893 
894 static void device_touch_init(struct pm860x_chip *chip,
895                                         struct pm860x_platform_data *pdata)
896 {
897         int ret;
898 
899         if (pdata == NULL)
900                 return;
901 
902         touch_devs[0].platform_data = pdata->touch;
903         touch_devs[0].pdata_size = sizeof(struct pm860x_touch_pdata);
904         touch_devs[0].num_resources = ARRAY_SIZE(touch_resources);
905         touch_devs[0].resources = &touch_resources[0];
906         ret = mfd_add_devices(chip->dev, 0, &touch_devs[0],
907                               ARRAY_SIZE(touch_devs), &touch_resources[0],
908                               chip->irq_base, NULL);
909         if (ret < 0)
910                 dev_err(chip->dev, "Failed to add touch subdev\n");
911 }
912 
913 static void device_power_init(struct pm860x_chip *chip,
914                                         struct pm860x_platform_data *pdata)
915 {
916         int ret;
917 
918         if (pdata == NULL)
919                 return;
920 
921         power_devs[0].platform_data = pdata->power;
922         power_devs[0].pdata_size = sizeof(struct pm860x_power_pdata);
923         power_devs[0].num_resources = ARRAY_SIZE(battery_resources);
924         power_devs[0].resources = &battery_resources[0],
925         ret = mfd_add_devices(chip->dev, 0, &power_devs[0], 1,
926                               &battery_resources[0], chip->irq_base, NULL);
927         if (ret < 0)
928                 dev_err(chip->dev, "Failed to add battery subdev\n");
929 
930         power_devs[1].platform_data = pdata->power;
931         power_devs[1].pdata_size = sizeof(struct pm860x_power_pdata);
932         power_devs[1].num_resources = ARRAY_SIZE(charger_resources);
933         power_devs[1].resources = &charger_resources[0],
934         ret = mfd_add_devices(chip->dev, 0, &power_devs[1], 1,
935                               &charger_resources[0], chip->irq_base, NULL);
936         if (ret < 0)
937                 dev_err(chip->dev, "Failed to add charger subdev\n");
938 
939         power_devs[2].platform_data = &preg_init_data;
940         power_devs[2].pdata_size = sizeof(struct regulator_init_data);
941         ret = mfd_add_devices(chip->dev, 0, &power_devs[2], 1,
942                               NULL, chip->irq_base, NULL);
943         if (ret < 0)
944                 dev_err(chip->dev, "Failed to add preg subdev\n");
945 
946         if (pdata->chg_desc) {
947                 pdata->chg_desc->charger_regulators =
948                         &chg_desc_regulator_data[0];
949                 pdata->chg_desc->num_charger_regulators =
950                         ARRAY_SIZE(chg_desc_regulator_data),
951                 power_devs[3].platform_data = pdata->chg_desc;
952                 power_devs[3].pdata_size = sizeof(*pdata->chg_desc);
953                 ret = mfd_add_devices(chip->dev, 0, &power_devs[3], 1,
954                                       NULL, chip->irq_base, NULL);
955                 if (ret < 0)
956                         dev_err(chip->dev, "Failed to add chg-manager subdev\n");
957         }
958 }
959 
960 static void device_onkey_init(struct pm860x_chip *chip,
961                                         struct pm860x_platform_data *pdata)
962 {
963         int ret;
964 
965         onkey_devs[0].num_resources = ARRAY_SIZE(onkey_resources);
966         onkey_devs[0].resources = &onkey_resources[0],
967         ret = mfd_add_devices(chip->dev, 0, &onkey_devs[0],
968                               ARRAY_SIZE(onkey_devs), &onkey_resources[0],
969                               chip->irq_base, NULL);
970         if (ret < 0)
971                 dev_err(chip->dev, "Failed to add onkey subdev\n");
972 }
973 
974 static void device_codec_init(struct pm860x_chip *chip,
975                                         struct pm860x_platform_data *pdata)
976 {
977         int ret;
978 
979         codec_devs[0].num_resources = ARRAY_SIZE(codec_resources);
980         codec_devs[0].resources = &codec_resources[0],
981         ret = mfd_add_devices(chip->dev, 0, &codec_devs[0],
982                               ARRAY_SIZE(codec_devs), &codec_resources[0], 0,
983                               NULL);
984         if (ret < 0)
985                 dev_err(chip->dev, "Failed to add codec subdev\n");
986 }
987 
988 static void device_8607_init(struct pm860x_chip *chip,
989                                        struct i2c_client *i2c,
990                                        struct pm860x_platform_data *pdata)
991 {
992         int data, ret;
993 
994         ret = pm860x_reg_read(i2c, PM8607_CHIP_ID);
995         if (ret < 0) {
996                 dev_err(chip->dev, "Failed to read CHIP ID: %d\n", ret);
997                 goto out;
998         }
999         switch (ret & PM8607_VERSION_MASK) {
1000         case 0x40:
1001         case 0x50:
1002                 dev_info(chip->dev, "Marvell 88PM8607 (ID: %02x) detected\n",
1003                          ret);
1004                 break;
1005         default:
1006                 dev_err(chip->dev,
1007                         "Failed to detect Marvell 88PM8607. Chip ID: %02x\n",
1008                         ret);
1009                 goto out;
1010         }
1011 
1012         ret = pm860x_reg_read(i2c, PM8607_BUCK3);
1013         if (ret < 0) {
1014                 dev_err(chip->dev, "Failed to read BUCK3 register: %d\n", ret);
1015                 goto out;
1016         }
1017         if (ret & PM8607_BUCK3_DOUBLE)
1018                 chip->buck3_double = 1;
1019 
1020         ret = pm860x_reg_read(i2c, PM8607_B0_MISC1);
1021         if (ret < 0) {
1022                 dev_err(chip->dev, "Failed to read MISC1 register: %d\n", ret);
1023                 goto out;
1024         }
1025 
1026         if (pdata && (pdata->i2c_port == PI2C_PORT))
1027                 data = PM8607_B0_MISC1_PI2C;
1028         else
1029                 data = 0;
1030         ret = pm860x_set_bits(i2c, PM8607_B0_MISC1, PM8607_B0_MISC1_PI2C, data);
1031         if (ret < 0) {
1032                 dev_err(chip->dev, "Failed to access MISC1:%d\n", ret);
1033                 goto out;
1034         }
1035 
1036         ret = device_irq_init(chip, pdata);
1037         if (ret < 0)
1038                 goto out;
1039 
1040         device_regulator_init(chip, pdata);
1041         device_rtc_init(chip, pdata);
1042         device_onkey_init(chip, pdata);
1043         device_touch_init(chip, pdata);
1044         device_power_init(chip, pdata);
1045         device_codec_init(chip, pdata);
1046 out:
1047         return;
1048 }
1049 
1050 static void device_8606_init(struct pm860x_chip *chip,
1051                                        struct i2c_client *i2c,
1052                                        struct pm860x_platform_data *pdata)
1053 {
1054         device_osc_init(i2c);
1055         device_bk_init(chip, pdata);
1056         device_led_init(chip, pdata);
1057 }
1058 
1059 static int pm860x_device_init(struct pm860x_chip *chip,
1060                                         struct pm860x_platform_data *pdata)
1061 {
1062         chip->core_irq = 0;
1063 
1064         switch (chip->id) {
1065         case CHIP_PM8606:
1066                 device_8606_init(chip, chip->client, pdata);
1067                 break;
1068         case CHIP_PM8607:
1069                 device_8607_init(chip, chip->client, pdata);
1070                 break;
1071         }
1072 
1073         if (chip->companion) {
1074                 switch (chip->id) {
1075                 case CHIP_PM8607:
1076                         device_8606_init(chip, chip->companion, pdata);
1077                         break;
1078                 case CHIP_PM8606:
1079                         device_8607_init(chip, chip->companion, pdata);
1080                         break;
1081                 }
1082         }
1083 
1084         return 0;
1085 }
1086 
1087 static void pm860x_device_exit(struct pm860x_chip *chip)
1088 {
1089         device_irq_exit(chip);
1090         mfd_remove_devices(chip->dev);
1091 }
1092 
1093 static int verify_addr(struct i2c_client *i2c)
1094 {
1095         unsigned short addr_8607[] = {0x30, 0x34};
1096         unsigned short addr_8606[] = {0x10, 0x11};
1097         int size, i;
1098 
1099         if (i2c == NULL)
1100                 return 0;
1101         size = ARRAY_SIZE(addr_8606);
1102         for (i = 0; i < size; i++) {
1103                 if (i2c->addr == *(addr_8606 + i))
1104                         return CHIP_PM8606;
1105         }
1106         size = ARRAY_SIZE(addr_8607);
1107         for (i = 0; i < size; i++) {
1108                 if (i2c->addr == *(addr_8607 + i))
1109                         return CHIP_PM8607;
1110         }
1111         return 0;
1112 }
1113 
1114 static struct regmap_config pm860x_regmap_config = {
1115         .reg_bits = 8,
1116         .val_bits = 8,
1117 };
1118 
1119 static int pm860x_dt_init(struct device_node *np,
1120                                     struct device *dev,
1121                                     struct pm860x_platform_data *pdata)
1122 {
1123         int ret;
1124 
1125         if (of_get_property(np, "marvell,88pm860x-irq-read-clr", NULL))
1126                 pdata->irq_mode = 1;
1127         ret = of_property_read_u32(np, "marvell,88pm860x-slave-addr",
1128                                    &pdata->companion_addr);
1129         if (ret) {
1130                 dev_err(dev,
1131                         "Not found \"marvell,88pm860x-slave-addr\" property\n");
1132                 pdata->companion_addr = 0;
1133         }
1134         return 0;
1135 }
1136 
1137 static int pm860x_probe(struct i2c_client *client,
1138                                   const struct i2c_device_id *id)
1139 {
1140         struct pm860x_platform_data *pdata = dev_get_platdata(&client->dev);
1141         struct device_node *node = client->dev.of_node;
1142         struct pm860x_chip *chip;
1143         int ret;
1144 
1145         if (node && !pdata) {
1146                 /* parse DT to get platform data */
1147                 pdata = devm_kzalloc(&client->dev,
1148                                      sizeof(struct pm860x_platform_data),
1149                                      GFP_KERNEL);
1150                 if (!pdata)
1151                         return -ENOMEM;
1152                 ret = pm860x_dt_init(node, &client->dev, pdata);
1153                 if (ret)
1154                         return ret;
1155         } else if (!pdata) {
1156                 pr_info("No platform data in %s!\n", __func__);
1157                 return -EINVAL;
1158         }
1159 
1160         chip = devm_kzalloc(&client->dev,
1161                             sizeof(struct pm860x_chip), GFP_KERNEL);
1162         if (chip == NULL)
1163                 return -ENOMEM;
1164 
1165         chip->id = verify_addr(client);
1166         chip->regmap = devm_regmap_init_i2c(client, &pm860x_regmap_config);
1167         if (IS_ERR(chip->regmap)) {
1168                 ret = PTR_ERR(chip->regmap);
1169                 dev_err(&client->dev, "Failed to allocate register map: %d\n",
1170                                 ret);
1171                 return ret;
1172         }
1173         chip->client = client;
1174         i2c_set_clientdata(client, chip);
1175         chip->dev = &client->dev;
1176         dev_set_drvdata(chip->dev, chip);
1177 
1178         /*
1179          * Both client and companion client shares same platform driver.
1180          * Driver distinguishes them by pdata->companion_addr.
1181          * pdata->companion_addr is only assigned if companion chip exists.
1182          * At the same time, the companion_addr shouldn't equal to client
1183          * address.
1184          */
1185         if (pdata->companion_addr && (pdata->companion_addr != client->addr)) {
1186                 chip->companion_addr = pdata->companion_addr;
1187                 chip->companion = i2c_new_dummy(chip->client->adapter,
1188                                                 chip->companion_addr);
1189                 if (!chip->companion) {
1190                         dev_err(&client->dev,
1191                                 "Failed to allocate I2C companion device\n");
1192                         return -ENODEV;
1193                 }
1194                 chip->regmap_companion = regmap_init_i2c(chip->companion,
1195                                                         &pm860x_regmap_config);
1196                 if (IS_ERR(chip->regmap_companion)) {
1197                         ret = PTR_ERR(chip->regmap_companion);
1198                         dev_err(&chip->companion->dev,
1199                                 "Failed to allocate register map: %d\n", ret);
1200                         i2c_unregister_device(chip->companion);
1201                         return ret;
1202                 }
1203                 i2c_set_clientdata(chip->companion, chip);
1204         }
1205 
1206         pm860x_device_init(chip, pdata);
1207         return 0;
1208 }
1209 
1210 static int pm860x_remove(struct i2c_client *client)
1211 {
1212         struct pm860x_chip *chip = i2c_get_clientdata(client);
1213 
1214         pm860x_device_exit(chip);
1215         if (chip->companion) {
1216                 regmap_exit(chip->regmap_companion);
1217                 i2c_unregister_device(chip->companion);
1218         }
1219         return 0;
1220 }
1221 
1222 #ifdef CONFIG_PM_SLEEP
1223 static int pm860x_suspend(struct device *dev)
1224 {
1225         struct i2c_client *client = container_of(dev, struct i2c_client, dev);
1226         struct pm860x_chip *chip = i2c_get_clientdata(client);
1227 
1228         if (device_may_wakeup(dev) && chip->wakeup_flag)
1229                 enable_irq_wake(chip->core_irq);
1230         return 0;
1231 }
1232 
1233 static int pm860x_resume(struct device *dev)
1234 {
1235         struct i2c_client *client = container_of(dev, struct i2c_client, dev);
1236         struct pm860x_chip *chip = i2c_get_clientdata(client);
1237 
1238         if (device_may_wakeup(dev) && chip->wakeup_flag)
1239                 disable_irq_wake(chip->core_irq);
1240         return 0;
1241 }
1242 #endif
1243 
1244 static SIMPLE_DEV_PM_OPS(pm860x_pm_ops, pm860x_suspend, pm860x_resume);
1245 
1246 static const struct i2c_device_id pm860x_id_table[] = {
1247         { "88PM860x", 0 },
1248         {}
1249 };
1250 MODULE_DEVICE_TABLE(i2c, pm860x_id_table);
1251 
1252 static const struct of_device_id pm860x_dt_ids[] = {
1253         { .compatible = "marvell,88pm860x", },
1254         {},
1255 };
1256 MODULE_DEVICE_TABLE(of, pm860x_dt_ids);
1257 
1258 static struct i2c_driver pm860x_driver = {
1259         .driver = {
1260                 .name   = "88PM860x",
1261                 .owner  = THIS_MODULE,
1262                 .pm     = &pm860x_pm_ops,
1263                 .of_match_table = pm860x_dt_ids,
1264         },
1265         .probe          = pm860x_probe,
1266         .remove         = pm860x_remove,
1267         .id_table       = pm860x_id_table,
1268 };
1269 
1270 static int __init pm860x_i2c_init(void)
1271 {
1272         int ret;
1273         ret = i2c_add_driver(&pm860x_driver);
1274         if (ret != 0)
1275                 pr_err("Failed to register 88PM860x I2C driver: %d\n", ret);
1276         return ret;
1277 }
1278 subsys_initcall(pm860x_i2c_init);
1279 
1280 static void __exit pm860x_i2c_exit(void)
1281 {
1282         i2c_del_driver(&pm860x_driver);
1283 }
1284 module_exit(pm860x_i2c_exit);
1285 
1286 MODULE_DESCRIPTION("PMIC Driver for Marvell 88PM860x");
1287 MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
1288 MODULE_LICENSE("GPL");
1289 

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