Version:  2.0.40 2.2.26 2.4.37 3.0 3.1 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

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

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

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