Version:  2.0.40 2.2.26 2.4.37 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0 4.1 4.2 4.3 4.4

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         irq_set_noprobe(virq);
562         return 0;
563 }
564 
565 static const struct irq_domain_ops pm860x_irq_domain_ops = {
566         .map    = pm860x_irq_domain_map,
567         .xlate  = irq_domain_xlate_onetwocell,
568 };
569 
570 static int device_irq_init(struct pm860x_chip *chip,
571                                      struct pm860x_platform_data *pdata)
572 {
573         struct i2c_client *i2c = (chip->id == CHIP_PM8607) ?
574                 chip->client : chip->companion;
575         unsigned char status_buf[INT_STATUS_NUM];
576         unsigned long flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT;
577         int data, mask, ret = -EINVAL;
578         int nr_irqs, irq_base = -1;
579         struct device_node *node = i2c->dev.of_node;
580 
581         mask = PM8607_B0_MISC1_INV_INT | PM8607_B0_MISC1_INT_CLEAR
582                 | PM8607_B0_MISC1_INT_MASK;
583         data = 0;
584         chip->irq_mode = 0;
585         if (pdata && pdata->irq_mode) {
586                 /*
587                  * irq_mode defines the way of clearing interrupt. If it's 1,
588                  * clear IRQ by write. Otherwise, clear it by read.
589                  * This control bit is valid from 88PM8607 B0 steping.
590                  */
591                 data |= PM8607_B0_MISC1_INT_CLEAR;
592                 chip->irq_mode = 1;
593         }
594         ret = pm860x_set_bits(i2c, PM8607_B0_MISC1, mask, data);
595         if (ret < 0)
596                 goto out;
597 
598         /* mask all IRQs */
599         memset(status_buf, 0, INT_STATUS_NUM);
600         ret = pm860x_bulk_write(i2c, PM8607_INT_MASK_1,
601                                 INT_STATUS_NUM, status_buf);
602         if (ret < 0)
603                 goto out;
604 
605         if (chip->irq_mode) {
606                 /* clear interrupt status by write */
607                 memset(status_buf, 0xFF, INT_STATUS_NUM);
608                 ret = pm860x_bulk_write(i2c, PM8607_INT_STATUS1,
609                                         INT_STATUS_NUM, status_buf);
610         } else {
611                 /* clear interrupt status by read */
612                 ret = pm860x_bulk_read(i2c, PM8607_INT_STATUS1,
613                                         INT_STATUS_NUM, status_buf);
614         }
615         if (ret < 0)
616                 goto out;
617 
618         mutex_init(&chip->irq_lock);
619 
620         if (pdata && pdata->irq_base)
621                 irq_base = pdata->irq_base;
622         nr_irqs = ARRAY_SIZE(pm860x_irqs);
623         chip->irq_base = irq_alloc_descs(irq_base, 0, nr_irqs, 0);
624         if (chip->irq_base < 0) {
625                 dev_err(&i2c->dev, "Failed to allocate interrupts, ret:%d\n",
626                         chip->irq_base);
627                 ret = -EBUSY;
628                 goto out;
629         }
630         irq_domain_add_legacy(node, nr_irqs, chip->irq_base, 0,
631                               &pm860x_irq_domain_ops, chip);
632         chip->core_irq = i2c->irq;
633         if (!chip->core_irq)
634                 goto out;
635 
636         ret = request_threaded_irq(chip->core_irq, NULL, pm860x_irq,
637                                    flags | IRQF_ONESHOT, "88pm860x", chip);
638         if (ret) {
639                 dev_err(chip->dev, "Failed to request IRQ: %d\n", ret);
640                 chip->core_irq = 0;
641         }
642 
643         return 0;
644 out:
645         chip->core_irq = 0;
646         return ret;
647 }
648 
649 static void device_irq_exit(struct pm860x_chip *chip)
650 {
651         if (chip->core_irq)
652                 free_irq(chip->core_irq, chip);
653 }
654 
655 int pm8606_osc_enable(struct pm860x_chip *chip, unsigned short client)
656 {
657         int ret = -EIO;
658         struct i2c_client *i2c = (chip->id == CHIP_PM8606) ?
659                 chip->client : chip->companion;
660 
661         dev_dbg(chip->dev, "%s(B): client=0x%x\n", __func__, client);
662         dev_dbg(chip->dev, "%s(B): vote=0x%x status=%d\n",
663                         __func__, chip->osc_vote,
664                         chip->osc_status);
665 
666         mutex_lock(&chip->osc_lock);
667         /* Update voting status */
668         chip->osc_vote |= client;
669         /* If reference group is off - turn on*/
670         if (chip->osc_status != PM8606_REF_GP_OSC_ON) {
671                 chip->osc_status = PM8606_REF_GP_OSC_UNKNOWN;
672                 /* Enable Reference group Vsys */
673                 if (pm860x_set_bits(i2c, PM8606_VSYS,
674                                 PM8606_VSYS_EN, PM8606_VSYS_EN))
675                         goto out;
676 
677                 /*Enable Internal Oscillator */
678                 if (pm860x_set_bits(i2c, PM8606_MISC,
679                                 PM8606_MISC_OSC_EN, PM8606_MISC_OSC_EN))
680                         goto out;
681                 /* Update status (only if writes succeed) */
682                 chip->osc_status = PM8606_REF_GP_OSC_ON;
683         }
684         mutex_unlock(&chip->osc_lock);
685 
686         dev_dbg(chip->dev, "%s(A): vote=0x%x status=%d ret=%d\n",
687                         __func__, chip->osc_vote,
688                         chip->osc_status, ret);
689         return 0;
690 out:
691         mutex_unlock(&chip->osc_lock);
692         return ret;
693 }
694 EXPORT_SYMBOL(pm8606_osc_enable);
695 
696 int pm8606_osc_disable(struct pm860x_chip *chip, unsigned short client)
697 {
698         int ret = -EIO;
699         struct i2c_client *i2c = (chip->id == CHIP_PM8606) ?
700                 chip->client : chip->companion;
701 
702         dev_dbg(chip->dev, "%s(B): client=0x%x\n", __func__, client);
703         dev_dbg(chip->dev, "%s(B): vote=0x%x status=%d\n",
704                         __func__, chip->osc_vote,
705                         chip->osc_status);
706 
707         mutex_lock(&chip->osc_lock);
708         /*Update voting status */
709         chip->osc_vote &= ~(client);
710         /* If reference group is off and this is the last client to release
711          * - turn off */
712         if ((chip->osc_status != PM8606_REF_GP_OSC_OFF) &&
713                         (chip->osc_vote == REF_GP_NO_CLIENTS)) {
714                 chip->osc_status = PM8606_REF_GP_OSC_UNKNOWN;
715                 /* Disable Reference group Vsys */
716                 if (pm860x_set_bits(i2c, PM8606_VSYS, PM8606_VSYS_EN, 0))
717                         goto out;
718                 /* Disable Internal Oscillator */
719                 if (pm860x_set_bits(i2c, PM8606_MISC, PM8606_MISC_OSC_EN, 0))
720                         goto out;
721                 chip->osc_status = PM8606_REF_GP_OSC_OFF;
722         }
723         mutex_unlock(&chip->osc_lock);
724 
725         dev_dbg(chip->dev, "%s(A): vote=0x%x status=%d ret=%d\n",
726                         __func__, chip->osc_vote,
727                         chip->osc_status, ret);
728         return 0;
729 out:
730         mutex_unlock(&chip->osc_lock);
731         return ret;
732 }
733 EXPORT_SYMBOL(pm8606_osc_disable);
734 
735 static void device_osc_init(struct i2c_client *i2c)
736 {
737         struct pm860x_chip *chip = i2c_get_clientdata(i2c);
738 
739         mutex_init(&chip->osc_lock);
740         /* init portofino reference group voting and status */
741         /* Disable Reference group Vsys */
742         pm860x_set_bits(i2c, PM8606_VSYS, PM8606_VSYS_EN, 0);
743         /* Disable Internal Oscillator */
744         pm860x_set_bits(i2c, PM8606_MISC, PM8606_MISC_OSC_EN, 0);
745 
746         chip->osc_vote = REF_GP_NO_CLIENTS;
747         chip->osc_status = PM8606_REF_GP_OSC_OFF;
748 }
749 
750 static void device_bk_init(struct pm860x_chip *chip,
751                                      struct pm860x_platform_data *pdata)
752 {
753         int ret, i;
754 
755         if (pdata && pdata->backlight) {
756                 if (pdata->num_backlights > ARRAY_SIZE(bk_devs))
757                         pdata->num_backlights = ARRAY_SIZE(bk_devs);
758                 for (i = 0; i < pdata->num_backlights; i++) {
759                         bk_devs[i].platform_data = &pdata->backlight[i];
760                         bk_devs[i].pdata_size =
761                                 sizeof(struct pm860x_backlight_pdata);
762                 }
763         }
764         ret = mfd_add_devices(chip->dev, 0, bk_devs,
765                               ARRAY_SIZE(bk_devs), NULL, 0, NULL);
766         if (ret < 0)
767                 dev_err(chip->dev, "Failed to add backlight subdev\n");
768 }
769 
770 static void device_led_init(struct pm860x_chip *chip,
771                                       struct pm860x_platform_data *pdata)
772 {
773         int ret, i;
774 
775         if (pdata && pdata->led) {
776                 if (pdata->num_leds > ARRAY_SIZE(led_devs))
777                         pdata->num_leds = ARRAY_SIZE(led_devs);
778                 for (i = 0; i < pdata->num_leds; i++) {
779                         led_devs[i].platform_data = &pdata->led[i];
780                         led_devs[i].pdata_size =
781                                 sizeof(struct pm860x_led_pdata);
782                 }
783         }
784         ret = mfd_add_devices(chip->dev, 0, led_devs,
785                               ARRAY_SIZE(led_devs), NULL, 0, NULL);
786         if (ret < 0) {
787                 dev_err(chip->dev, "Failed to add led subdev\n");
788                 return;
789         }
790 }
791 
792 static void device_regulator_init(struct pm860x_chip *chip,
793                                             struct pm860x_platform_data *pdata)
794 {
795         int ret;
796 
797         if (pdata == NULL)
798                 return;
799         if (pdata->buck1) {
800                 reg_devs[0].platform_data = pdata->buck1;
801                 reg_devs[0].pdata_size = sizeof(struct regulator_init_data);
802         }
803         if (pdata->buck2) {
804                 reg_devs[1].platform_data = pdata->buck2;
805                 reg_devs[1].pdata_size = sizeof(struct regulator_init_data);
806         }
807         if (pdata->buck3) {
808                 reg_devs[2].platform_data = pdata->buck3;
809                 reg_devs[2].pdata_size = sizeof(struct regulator_init_data);
810         }
811         if (pdata->ldo1) {
812                 reg_devs[3].platform_data = pdata->ldo1;
813                 reg_devs[3].pdata_size = sizeof(struct regulator_init_data);
814         }
815         if (pdata->ldo2) {
816                 reg_devs[4].platform_data = pdata->ldo2;
817                 reg_devs[4].pdata_size = sizeof(struct regulator_init_data);
818         }
819         if (pdata->ldo3) {
820                 reg_devs[5].platform_data = pdata->ldo3;
821                 reg_devs[5].pdata_size = sizeof(struct regulator_init_data);
822         }
823         if (pdata->ldo4) {
824                 reg_devs[6].platform_data = pdata->ldo4;
825                 reg_devs[6].pdata_size = sizeof(struct regulator_init_data);
826         }
827         if (pdata->ldo5) {
828                 reg_devs[7].platform_data = pdata->ldo5;
829                 reg_devs[7].pdata_size = sizeof(struct regulator_init_data);
830         }
831         if (pdata->ldo6) {
832                 reg_devs[8].platform_data = pdata->ldo6;
833                 reg_devs[8].pdata_size = sizeof(struct regulator_init_data);
834         }
835         if (pdata->ldo7) {
836                 reg_devs[9].platform_data = pdata->ldo7;
837                 reg_devs[9].pdata_size = sizeof(struct regulator_init_data);
838         }
839         if (pdata->ldo8) {
840                 reg_devs[10].platform_data = pdata->ldo8;
841                 reg_devs[10].pdata_size = sizeof(struct regulator_init_data);
842         }
843         if (pdata->ldo9) {
844                 reg_devs[11].platform_data = pdata->ldo9;
845                 reg_devs[11].pdata_size = sizeof(struct regulator_init_data);
846         }
847         if (pdata->ldo10) {
848                 reg_devs[12].platform_data = pdata->ldo10;
849                 reg_devs[12].pdata_size = sizeof(struct regulator_init_data);
850         }
851         if (pdata->ldo12) {
852                 reg_devs[13].platform_data = pdata->ldo12;
853                 reg_devs[13].pdata_size = sizeof(struct regulator_init_data);
854         }
855         if (pdata->ldo_vibrator) {
856                 reg_devs[14].platform_data = pdata->ldo_vibrator;
857                 reg_devs[14].pdata_size = sizeof(struct regulator_init_data);
858         }
859         if (pdata->ldo14) {
860                 reg_devs[15].platform_data = pdata->ldo14;
861                 reg_devs[15].pdata_size = sizeof(struct regulator_init_data);
862         }
863         ret = mfd_add_devices(chip->dev, 0, reg_devs,
864                               ARRAY_SIZE(reg_devs), NULL, 0, NULL);
865         if (ret < 0) {
866                 dev_err(chip->dev, "Failed to add regulator subdev\n");
867                 return;
868         }
869 }
870 
871 static void device_rtc_init(struct pm860x_chip *chip,
872                                       struct pm860x_platform_data *pdata)
873 {
874         int ret;
875 
876         if (!pdata)
877                 return;
878 
879         rtc_devs[0].platform_data = pdata->rtc;
880         rtc_devs[0].pdata_size = sizeof(struct pm860x_rtc_pdata);
881         rtc_devs[0].num_resources = ARRAY_SIZE(rtc_resources);
882         rtc_devs[0].resources = &rtc_resources[0];
883         ret = mfd_add_devices(chip->dev, 0, &rtc_devs[0],
884                               ARRAY_SIZE(rtc_devs), &rtc_resources[0],
885                               chip->irq_base, NULL);
886         if (ret < 0)
887                 dev_err(chip->dev, "Failed to add rtc subdev\n");
888 }
889 
890 static void device_touch_init(struct pm860x_chip *chip,
891                                         struct pm860x_platform_data *pdata)
892 {
893         int ret;
894 
895         if (pdata == NULL)
896                 return;
897 
898         touch_devs[0].platform_data = pdata->touch;
899         touch_devs[0].pdata_size = sizeof(struct pm860x_touch_pdata);
900         touch_devs[0].num_resources = ARRAY_SIZE(touch_resources);
901         touch_devs[0].resources = &touch_resources[0];
902         ret = mfd_add_devices(chip->dev, 0, &touch_devs[0],
903                               ARRAY_SIZE(touch_devs), &touch_resources[0],
904                               chip->irq_base, NULL);
905         if (ret < 0)
906                 dev_err(chip->dev, "Failed to add touch subdev\n");
907 }
908 
909 static void device_power_init(struct pm860x_chip *chip,
910                                         struct pm860x_platform_data *pdata)
911 {
912         int ret;
913 
914         if (pdata == NULL)
915                 return;
916 
917         power_devs[0].platform_data = pdata->power;
918         power_devs[0].pdata_size = sizeof(struct pm860x_power_pdata);
919         power_devs[0].num_resources = ARRAY_SIZE(battery_resources);
920         power_devs[0].resources = &battery_resources[0],
921         ret = mfd_add_devices(chip->dev, 0, &power_devs[0], 1,
922                               &battery_resources[0], chip->irq_base, NULL);
923         if (ret < 0)
924                 dev_err(chip->dev, "Failed to add battery subdev\n");
925 
926         power_devs[1].platform_data = pdata->power;
927         power_devs[1].pdata_size = sizeof(struct pm860x_power_pdata);
928         power_devs[1].num_resources = ARRAY_SIZE(charger_resources);
929         power_devs[1].resources = &charger_resources[0],
930         ret = mfd_add_devices(chip->dev, 0, &power_devs[1], 1,
931                               &charger_resources[0], chip->irq_base, NULL);
932         if (ret < 0)
933                 dev_err(chip->dev, "Failed to add charger subdev\n");
934 
935         power_devs[2].platform_data = &preg_init_data;
936         power_devs[2].pdata_size = sizeof(struct regulator_init_data);
937         ret = mfd_add_devices(chip->dev, 0, &power_devs[2], 1,
938                               NULL, chip->irq_base, NULL);
939         if (ret < 0)
940                 dev_err(chip->dev, "Failed to add preg subdev\n");
941 
942         if (pdata->chg_desc) {
943                 pdata->chg_desc->charger_regulators =
944                         &chg_desc_regulator_data[0];
945                 pdata->chg_desc->num_charger_regulators =
946                         ARRAY_SIZE(chg_desc_regulator_data),
947                 power_devs[3].platform_data = pdata->chg_desc;
948                 power_devs[3].pdata_size = sizeof(*pdata->chg_desc);
949                 ret = mfd_add_devices(chip->dev, 0, &power_devs[3], 1,
950                                       NULL, chip->irq_base, NULL);
951                 if (ret < 0)
952                         dev_err(chip->dev, "Failed to add chg-manager subdev\n");
953         }
954 }
955 
956 static void device_onkey_init(struct pm860x_chip *chip,
957                                         struct pm860x_platform_data *pdata)
958 {
959         int ret;
960 
961         onkey_devs[0].num_resources = ARRAY_SIZE(onkey_resources);
962         onkey_devs[0].resources = &onkey_resources[0],
963         ret = mfd_add_devices(chip->dev, 0, &onkey_devs[0],
964                               ARRAY_SIZE(onkey_devs), &onkey_resources[0],
965                               chip->irq_base, NULL);
966         if (ret < 0)
967                 dev_err(chip->dev, "Failed to add onkey subdev\n");
968 }
969 
970 static void device_codec_init(struct pm860x_chip *chip,
971                                         struct pm860x_platform_data *pdata)
972 {
973         int ret;
974 
975         codec_devs[0].num_resources = ARRAY_SIZE(codec_resources);
976         codec_devs[0].resources = &codec_resources[0],
977         ret = mfd_add_devices(chip->dev, 0, &codec_devs[0],
978                               ARRAY_SIZE(codec_devs), &codec_resources[0], 0,
979                               NULL);
980         if (ret < 0)
981                 dev_err(chip->dev, "Failed to add codec subdev\n");
982 }
983 
984 static void device_8607_init(struct pm860x_chip *chip,
985                                        struct i2c_client *i2c,
986                                        struct pm860x_platform_data *pdata)
987 {
988         int data, ret;
989 
990         ret = pm860x_reg_read(i2c, PM8607_CHIP_ID);
991         if (ret < 0) {
992                 dev_err(chip->dev, "Failed to read CHIP ID: %d\n", ret);
993                 goto out;
994         }
995         switch (ret & PM8607_VERSION_MASK) {
996         case 0x40:
997         case 0x50:
998                 dev_info(chip->dev, "Marvell 88PM8607 (ID: %02x) detected\n",
999                          ret);
1000                 break;
1001         default:
1002                 dev_err(chip->dev,
1003                         "Failed to detect Marvell 88PM8607. Chip ID: %02x\n",
1004                         ret);
1005                 goto out;
1006         }
1007 
1008         ret = pm860x_reg_read(i2c, PM8607_BUCK3);
1009         if (ret < 0) {
1010                 dev_err(chip->dev, "Failed to read BUCK3 register: %d\n", ret);
1011                 goto out;
1012         }
1013         if (ret & PM8607_BUCK3_DOUBLE)
1014                 chip->buck3_double = 1;
1015 
1016         ret = pm860x_reg_read(i2c, PM8607_B0_MISC1);
1017         if (ret < 0) {
1018                 dev_err(chip->dev, "Failed to read MISC1 register: %d\n", ret);
1019                 goto out;
1020         }
1021 
1022         if (pdata && (pdata->i2c_port == PI2C_PORT))
1023                 data = PM8607_B0_MISC1_PI2C;
1024         else
1025                 data = 0;
1026         ret = pm860x_set_bits(i2c, PM8607_B0_MISC1, PM8607_B0_MISC1_PI2C, data);
1027         if (ret < 0) {
1028                 dev_err(chip->dev, "Failed to access MISC1:%d\n", ret);
1029                 goto out;
1030         }
1031 
1032         ret = device_irq_init(chip, pdata);
1033         if (ret < 0)
1034                 goto out;
1035 
1036         device_regulator_init(chip, pdata);
1037         device_rtc_init(chip, pdata);
1038         device_onkey_init(chip, pdata);
1039         device_touch_init(chip, pdata);
1040         device_power_init(chip, pdata);
1041         device_codec_init(chip, pdata);
1042 out:
1043         return;
1044 }
1045 
1046 static void device_8606_init(struct pm860x_chip *chip,
1047                                        struct i2c_client *i2c,
1048                                        struct pm860x_platform_data *pdata)
1049 {
1050         device_osc_init(i2c);
1051         device_bk_init(chip, pdata);
1052         device_led_init(chip, pdata);
1053 }
1054 
1055 static int pm860x_device_init(struct pm860x_chip *chip,
1056                                         struct pm860x_platform_data *pdata)
1057 {
1058         chip->core_irq = 0;
1059 
1060         switch (chip->id) {
1061         case CHIP_PM8606:
1062                 device_8606_init(chip, chip->client, pdata);
1063                 break;
1064         case CHIP_PM8607:
1065                 device_8607_init(chip, chip->client, pdata);
1066                 break;
1067         }
1068 
1069         if (chip->companion) {
1070                 switch (chip->id) {
1071                 case CHIP_PM8607:
1072                         device_8606_init(chip, chip->companion, pdata);
1073                         break;
1074                 case CHIP_PM8606:
1075                         device_8607_init(chip, chip->companion, pdata);
1076                         break;
1077                 }
1078         }
1079 
1080         return 0;
1081 }
1082 
1083 static void pm860x_device_exit(struct pm860x_chip *chip)
1084 {
1085         device_irq_exit(chip);
1086         mfd_remove_devices(chip->dev);
1087 }
1088 
1089 static int verify_addr(struct i2c_client *i2c)
1090 {
1091         unsigned short addr_8607[] = {0x30, 0x34};
1092         unsigned short addr_8606[] = {0x10, 0x11};
1093         int size, i;
1094 
1095         if (i2c == NULL)
1096                 return 0;
1097         size = ARRAY_SIZE(addr_8606);
1098         for (i = 0; i < size; i++) {
1099                 if (i2c->addr == *(addr_8606 + i))
1100                         return CHIP_PM8606;
1101         }
1102         size = ARRAY_SIZE(addr_8607);
1103         for (i = 0; i < size; i++) {
1104                 if (i2c->addr == *(addr_8607 + i))
1105                         return CHIP_PM8607;
1106         }
1107         return 0;
1108 }
1109 
1110 static const struct regmap_config pm860x_regmap_config = {
1111         .reg_bits = 8,
1112         .val_bits = 8,
1113 };
1114 
1115 static int pm860x_dt_init(struct device_node *np,
1116                                     struct device *dev,
1117                                     struct pm860x_platform_data *pdata)
1118 {
1119         int ret;
1120 
1121         if (of_get_property(np, "marvell,88pm860x-irq-read-clr", NULL))
1122                 pdata->irq_mode = 1;
1123         ret = of_property_read_u32(np, "marvell,88pm860x-slave-addr",
1124                                    &pdata->companion_addr);
1125         if (ret) {
1126                 dev_err(dev,
1127                         "Not found \"marvell,88pm860x-slave-addr\" property\n");
1128                 pdata->companion_addr = 0;
1129         }
1130         return 0;
1131 }
1132 
1133 static int pm860x_probe(struct i2c_client *client,
1134                                   const struct i2c_device_id *id)
1135 {
1136         struct pm860x_platform_data *pdata = dev_get_platdata(&client->dev);
1137         struct device_node *node = client->dev.of_node;
1138         struct pm860x_chip *chip;
1139         int ret;
1140 
1141         if (node && !pdata) {
1142                 /* parse DT to get platform data */
1143                 pdata = devm_kzalloc(&client->dev,
1144                                      sizeof(struct pm860x_platform_data),
1145                                      GFP_KERNEL);
1146                 if (!pdata)
1147                         return -ENOMEM;
1148                 ret = pm860x_dt_init(node, &client->dev, pdata);
1149                 if (ret)
1150                         return ret;
1151         } else if (!pdata) {
1152                 pr_info("No platform data in %s!\n", __func__);
1153                 return -EINVAL;
1154         }
1155 
1156         chip = devm_kzalloc(&client->dev,
1157                             sizeof(struct pm860x_chip), GFP_KERNEL);
1158         if (chip == NULL)
1159                 return -ENOMEM;
1160 
1161         chip->id = verify_addr(client);
1162         chip->regmap = devm_regmap_init_i2c(client, &pm860x_regmap_config);
1163         if (IS_ERR(chip->regmap)) {
1164                 ret = PTR_ERR(chip->regmap);
1165                 dev_err(&client->dev, "Failed to allocate register map: %d\n",
1166                                 ret);
1167                 return ret;
1168         }
1169         chip->client = client;
1170         i2c_set_clientdata(client, chip);
1171         chip->dev = &client->dev;
1172         dev_set_drvdata(chip->dev, chip);
1173 
1174         /*
1175          * Both client and companion client shares same platform driver.
1176          * Driver distinguishes them by pdata->companion_addr.
1177          * pdata->companion_addr is only assigned if companion chip exists.
1178          * At the same time, the companion_addr shouldn't equal to client
1179          * address.
1180          */
1181         if (pdata->companion_addr && (pdata->companion_addr != client->addr)) {
1182                 chip->companion_addr = pdata->companion_addr;
1183                 chip->companion = i2c_new_dummy(chip->client->adapter,
1184                                                 chip->companion_addr);
1185                 if (!chip->companion) {
1186                         dev_err(&client->dev,
1187                                 "Failed to allocate I2C companion device\n");
1188                         return -ENODEV;
1189                 }
1190                 chip->regmap_companion = regmap_init_i2c(chip->companion,
1191                                                         &pm860x_regmap_config);
1192                 if (IS_ERR(chip->regmap_companion)) {
1193                         ret = PTR_ERR(chip->regmap_companion);
1194                         dev_err(&chip->companion->dev,
1195                                 "Failed to allocate register map: %d\n", ret);
1196                         i2c_unregister_device(chip->companion);
1197                         return ret;
1198                 }
1199                 i2c_set_clientdata(chip->companion, chip);
1200         }
1201 
1202         pm860x_device_init(chip, pdata);
1203         return 0;
1204 }
1205 
1206 static int pm860x_remove(struct i2c_client *client)
1207 {
1208         struct pm860x_chip *chip = i2c_get_clientdata(client);
1209 
1210         pm860x_device_exit(chip);
1211         if (chip->companion) {
1212                 regmap_exit(chip->regmap_companion);
1213                 i2c_unregister_device(chip->companion);
1214         }
1215         return 0;
1216 }
1217 
1218 #ifdef CONFIG_PM_SLEEP
1219 static int pm860x_suspend(struct device *dev)
1220 {
1221         struct i2c_client *client = container_of(dev, struct i2c_client, dev);
1222         struct pm860x_chip *chip = i2c_get_clientdata(client);
1223 
1224         if (device_may_wakeup(dev) && chip->wakeup_flag)
1225                 enable_irq_wake(chip->core_irq);
1226         return 0;
1227 }
1228 
1229 static int pm860x_resume(struct device *dev)
1230 {
1231         struct i2c_client *client = container_of(dev, struct i2c_client, dev);
1232         struct pm860x_chip *chip = i2c_get_clientdata(client);
1233 
1234         if (device_may_wakeup(dev) && chip->wakeup_flag)
1235                 disable_irq_wake(chip->core_irq);
1236         return 0;
1237 }
1238 #endif
1239 
1240 static SIMPLE_DEV_PM_OPS(pm860x_pm_ops, pm860x_suspend, pm860x_resume);
1241 
1242 static const struct i2c_device_id pm860x_id_table[] = {
1243         { "88PM860x", 0 },
1244         {}
1245 };
1246 MODULE_DEVICE_TABLE(i2c, pm860x_id_table);
1247 
1248 static const struct of_device_id pm860x_dt_ids[] = {
1249         { .compatible = "marvell,88pm860x", },
1250         {},
1251 };
1252 MODULE_DEVICE_TABLE(of, pm860x_dt_ids);
1253 
1254 static struct i2c_driver pm860x_driver = {
1255         .driver = {
1256                 .name   = "88PM860x",
1257                 .pm     = &pm860x_pm_ops,
1258                 .of_match_table = pm860x_dt_ids,
1259         },
1260         .probe          = pm860x_probe,
1261         .remove         = pm860x_remove,
1262         .id_table       = pm860x_id_table,
1263 };
1264 
1265 static int __init pm860x_i2c_init(void)
1266 {
1267         int ret;
1268         ret = i2c_add_driver(&pm860x_driver);
1269         if (ret != 0)
1270                 pr_err("Failed to register 88PM860x I2C driver: %d\n", ret);
1271         return ret;
1272 }
1273 subsys_initcall(pm860x_i2c_init);
1274 
1275 static void __exit pm860x_i2c_exit(void)
1276 {
1277         i2c_del_driver(&pm860x_driver);
1278 }
1279 module_exit(pm860x_i2c_exit);
1280 
1281 MODULE_DESCRIPTION("PMIC Driver for Marvell 88PM860x");
1282 MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
1283 MODULE_LICENSE("GPL");
1284 

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