Version:  2.0.40 2.2.26 2.4.37 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 4.5 4.6 4.7

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         /*
711          * If reference group is off and this is the last client to release
712          * - turn off
713          */
714         if ((chip->osc_status != PM8606_REF_GP_OSC_OFF) &&
715                         (chip->osc_vote == REF_GP_NO_CLIENTS)) {
716                 chip->osc_status = PM8606_REF_GP_OSC_UNKNOWN;
717                 /* Disable Reference group Vsys */
718                 if (pm860x_set_bits(i2c, PM8606_VSYS, PM8606_VSYS_EN, 0))
719                         goto out;
720                 /* Disable Internal Oscillator */
721                 if (pm860x_set_bits(i2c, PM8606_MISC, PM8606_MISC_OSC_EN, 0))
722                         goto out;
723                 chip->osc_status = PM8606_REF_GP_OSC_OFF;
724         }
725         mutex_unlock(&chip->osc_lock);
726 
727         dev_dbg(chip->dev, "%s(A): vote=0x%x status=%d ret=%d\n",
728                         __func__, chip->osc_vote,
729                         chip->osc_status, ret);
730         return 0;
731 out:
732         mutex_unlock(&chip->osc_lock);
733         return ret;
734 }
735 EXPORT_SYMBOL(pm8606_osc_disable);
736 
737 static void device_osc_init(struct i2c_client *i2c)
738 {
739         struct pm860x_chip *chip = i2c_get_clientdata(i2c);
740 
741         mutex_init(&chip->osc_lock);
742         /* init portofino reference group voting and status */
743         /* Disable Reference group Vsys */
744         pm860x_set_bits(i2c, PM8606_VSYS, PM8606_VSYS_EN, 0);
745         /* Disable Internal Oscillator */
746         pm860x_set_bits(i2c, PM8606_MISC, PM8606_MISC_OSC_EN, 0);
747 
748         chip->osc_vote = REF_GP_NO_CLIENTS;
749         chip->osc_status = PM8606_REF_GP_OSC_OFF;
750 }
751 
752 static void device_bk_init(struct pm860x_chip *chip,
753                                      struct pm860x_platform_data *pdata)
754 {
755         int ret, i;
756 
757         if (pdata && pdata->backlight) {
758                 if (pdata->num_backlights > ARRAY_SIZE(bk_devs))
759                         pdata->num_backlights = ARRAY_SIZE(bk_devs);
760                 for (i = 0; i < pdata->num_backlights; i++) {
761                         bk_devs[i].platform_data = &pdata->backlight[i];
762                         bk_devs[i].pdata_size =
763                                 sizeof(struct pm860x_backlight_pdata);
764                 }
765         }
766         ret = mfd_add_devices(chip->dev, 0, bk_devs,
767                               ARRAY_SIZE(bk_devs), NULL, 0, NULL);
768         if (ret < 0)
769                 dev_err(chip->dev, "Failed to add backlight subdev\n");
770 }
771 
772 static void device_led_init(struct pm860x_chip *chip,
773                                       struct pm860x_platform_data *pdata)
774 {
775         int ret, i;
776 
777         if (pdata && pdata->led) {
778                 if (pdata->num_leds > ARRAY_SIZE(led_devs))
779                         pdata->num_leds = ARRAY_SIZE(led_devs);
780                 for (i = 0; i < pdata->num_leds; i++) {
781                         led_devs[i].platform_data = &pdata->led[i];
782                         led_devs[i].pdata_size =
783                                 sizeof(struct pm860x_led_pdata);
784                 }
785         }
786         ret = mfd_add_devices(chip->dev, 0, led_devs,
787                               ARRAY_SIZE(led_devs), NULL, 0, NULL);
788         if (ret < 0) {
789                 dev_err(chip->dev, "Failed to add led subdev\n");
790                 return;
791         }
792 }
793 
794 static void device_regulator_init(struct pm860x_chip *chip,
795                                             struct pm860x_platform_data *pdata)
796 {
797         int ret;
798 
799         if (pdata == NULL)
800                 return;
801         if (pdata->buck1) {
802                 reg_devs[0].platform_data = pdata->buck1;
803                 reg_devs[0].pdata_size = sizeof(struct regulator_init_data);
804         }
805         if (pdata->buck2) {
806                 reg_devs[1].platform_data = pdata->buck2;
807                 reg_devs[1].pdata_size = sizeof(struct regulator_init_data);
808         }
809         if (pdata->buck3) {
810                 reg_devs[2].platform_data = pdata->buck3;
811                 reg_devs[2].pdata_size = sizeof(struct regulator_init_data);
812         }
813         if (pdata->ldo1) {
814                 reg_devs[3].platform_data = pdata->ldo1;
815                 reg_devs[3].pdata_size = sizeof(struct regulator_init_data);
816         }
817         if (pdata->ldo2) {
818                 reg_devs[4].platform_data = pdata->ldo2;
819                 reg_devs[4].pdata_size = sizeof(struct regulator_init_data);
820         }
821         if (pdata->ldo3) {
822                 reg_devs[5].platform_data = pdata->ldo3;
823                 reg_devs[5].pdata_size = sizeof(struct regulator_init_data);
824         }
825         if (pdata->ldo4) {
826                 reg_devs[6].platform_data = pdata->ldo4;
827                 reg_devs[6].pdata_size = sizeof(struct regulator_init_data);
828         }
829         if (pdata->ldo5) {
830                 reg_devs[7].platform_data = pdata->ldo5;
831                 reg_devs[7].pdata_size = sizeof(struct regulator_init_data);
832         }
833         if (pdata->ldo6) {
834                 reg_devs[8].platform_data = pdata->ldo6;
835                 reg_devs[8].pdata_size = sizeof(struct regulator_init_data);
836         }
837         if (pdata->ldo7) {
838                 reg_devs[9].platform_data = pdata->ldo7;
839                 reg_devs[9].pdata_size = sizeof(struct regulator_init_data);
840         }
841         if (pdata->ldo8) {
842                 reg_devs[10].platform_data = pdata->ldo8;
843                 reg_devs[10].pdata_size = sizeof(struct regulator_init_data);
844         }
845         if (pdata->ldo9) {
846                 reg_devs[11].platform_data = pdata->ldo9;
847                 reg_devs[11].pdata_size = sizeof(struct regulator_init_data);
848         }
849         if (pdata->ldo10) {
850                 reg_devs[12].platform_data = pdata->ldo10;
851                 reg_devs[12].pdata_size = sizeof(struct regulator_init_data);
852         }
853         if (pdata->ldo12) {
854                 reg_devs[13].platform_data = pdata->ldo12;
855                 reg_devs[13].pdata_size = sizeof(struct regulator_init_data);
856         }
857         if (pdata->ldo_vibrator) {
858                 reg_devs[14].platform_data = pdata->ldo_vibrator;
859                 reg_devs[14].pdata_size = sizeof(struct regulator_init_data);
860         }
861         if (pdata->ldo14) {
862                 reg_devs[15].platform_data = pdata->ldo14;
863                 reg_devs[15].pdata_size = sizeof(struct regulator_init_data);
864         }
865         ret = mfd_add_devices(chip->dev, 0, reg_devs,
866                               ARRAY_SIZE(reg_devs), NULL, 0, NULL);
867         if (ret < 0) {
868                 dev_err(chip->dev, "Failed to add regulator subdev\n");
869                 return;
870         }
871 }
872 
873 static void device_rtc_init(struct pm860x_chip *chip,
874                                       struct pm860x_platform_data *pdata)
875 {
876         int ret;
877 
878         if (!pdata)
879                 return;
880 
881         rtc_devs[0].platform_data = pdata->rtc;
882         rtc_devs[0].pdata_size = sizeof(struct pm860x_rtc_pdata);
883         rtc_devs[0].num_resources = ARRAY_SIZE(rtc_resources);
884         rtc_devs[0].resources = &rtc_resources[0];
885         ret = mfd_add_devices(chip->dev, 0, &rtc_devs[0],
886                               ARRAY_SIZE(rtc_devs), &rtc_resources[0],
887                               chip->irq_base, NULL);
888         if (ret < 0)
889                 dev_err(chip->dev, "Failed to add rtc subdev\n");
890 }
891 
892 static void device_touch_init(struct pm860x_chip *chip,
893                                         struct pm860x_platform_data *pdata)
894 {
895         int ret;
896 
897         if (pdata == NULL)
898                 return;
899 
900         touch_devs[0].platform_data = pdata->touch;
901         touch_devs[0].pdata_size = sizeof(struct pm860x_touch_pdata);
902         touch_devs[0].num_resources = ARRAY_SIZE(touch_resources);
903         touch_devs[0].resources = &touch_resources[0];
904         ret = mfd_add_devices(chip->dev, 0, &touch_devs[0],
905                               ARRAY_SIZE(touch_devs), &touch_resources[0],
906                               chip->irq_base, NULL);
907         if (ret < 0)
908                 dev_err(chip->dev, "Failed to add touch subdev\n");
909 }
910 
911 static void device_power_init(struct pm860x_chip *chip,
912                                         struct pm860x_platform_data *pdata)
913 {
914         int ret;
915 
916         if (pdata == NULL)
917                 return;
918 
919         power_devs[0].platform_data = pdata->power;
920         power_devs[0].pdata_size = sizeof(struct pm860x_power_pdata);
921         power_devs[0].num_resources = ARRAY_SIZE(battery_resources);
922         power_devs[0].resources = &battery_resources[0],
923         ret = mfd_add_devices(chip->dev, 0, &power_devs[0], 1,
924                               &battery_resources[0], chip->irq_base, NULL);
925         if (ret < 0)
926                 dev_err(chip->dev, "Failed to add battery subdev\n");
927 
928         power_devs[1].platform_data = pdata->power;
929         power_devs[1].pdata_size = sizeof(struct pm860x_power_pdata);
930         power_devs[1].num_resources = ARRAY_SIZE(charger_resources);
931         power_devs[1].resources = &charger_resources[0],
932         ret = mfd_add_devices(chip->dev, 0, &power_devs[1], 1,
933                               &charger_resources[0], chip->irq_base, NULL);
934         if (ret < 0)
935                 dev_err(chip->dev, "Failed to add charger subdev\n");
936 
937         power_devs[2].platform_data = &preg_init_data;
938         power_devs[2].pdata_size = sizeof(struct regulator_init_data);
939         ret = mfd_add_devices(chip->dev, 0, &power_devs[2], 1,
940                               NULL, chip->irq_base, NULL);
941         if (ret < 0)
942                 dev_err(chip->dev, "Failed to add preg subdev\n");
943 
944         if (pdata->chg_desc) {
945                 pdata->chg_desc->charger_regulators =
946                         &chg_desc_regulator_data[0];
947                 pdata->chg_desc->num_charger_regulators =
948                         ARRAY_SIZE(chg_desc_regulator_data),
949                 power_devs[3].platform_data = pdata->chg_desc;
950                 power_devs[3].pdata_size = sizeof(*pdata->chg_desc);
951                 ret = mfd_add_devices(chip->dev, 0, &power_devs[3], 1,
952                                       NULL, chip->irq_base, NULL);
953                 if (ret < 0)
954                         dev_err(chip->dev, "Failed to add chg-manager subdev\n");
955         }
956 }
957 
958 static void device_onkey_init(struct pm860x_chip *chip,
959                                         struct pm860x_platform_data *pdata)
960 {
961         int ret;
962 
963         onkey_devs[0].num_resources = ARRAY_SIZE(onkey_resources);
964         onkey_devs[0].resources = &onkey_resources[0],
965         ret = mfd_add_devices(chip->dev, 0, &onkey_devs[0],
966                               ARRAY_SIZE(onkey_devs), &onkey_resources[0],
967                               chip->irq_base, NULL);
968         if (ret < 0)
969                 dev_err(chip->dev, "Failed to add onkey subdev\n");
970 }
971 
972 static void device_codec_init(struct pm860x_chip *chip,
973                                         struct pm860x_platform_data *pdata)
974 {
975         int ret;
976 
977         codec_devs[0].num_resources = ARRAY_SIZE(codec_resources);
978         codec_devs[0].resources = &codec_resources[0],
979         ret = mfd_add_devices(chip->dev, 0, &codec_devs[0],
980                               ARRAY_SIZE(codec_devs), &codec_resources[0], 0,
981                               NULL);
982         if (ret < 0)
983                 dev_err(chip->dev, "Failed to add codec subdev\n");
984 }
985 
986 static void device_8607_init(struct pm860x_chip *chip,
987                                        struct i2c_client *i2c,
988                                        struct pm860x_platform_data *pdata)
989 {
990         int data, ret;
991 
992         ret = pm860x_reg_read(i2c, PM8607_CHIP_ID);
993         if (ret < 0) {
994                 dev_err(chip->dev, "Failed to read CHIP ID: %d\n", ret);
995                 goto out;
996         }
997         switch (ret & PM8607_VERSION_MASK) {
998         case 0x40:
999         case 0x50:
1000                 dev_info(chip->dev, "Marvell 88PM8607 (ID: %02x) detected\n",
1001                          ret);
1002                 break;
1003         default:
1004                 dev_err(chip->dev,
1005                         "Failed to detect Marvell 88PM8607. Chip ID: %02x\n",
1006                         ret);
1007                 goto out;
1008         }
1009 
1010         ret = pm860x_reg_read(i2c, PM8607_BUCK3);
1011         if (ret < 0) {
1012                 dev_err(chip->dev, "Failed to read BUCK3 register: %d\n", ret);
1013                 goto out;
1014         }
1015         if (ret & PM8607_BUCK3_DOUBLE)
1016                 chip->buck3_double = 1;
1017 
1018         ret = pm860x_reg_read(i2c, PM8607_B0_MISC1);
1019         if (ret < 0) {
1020                 dev_err(chip->dev, "Failed to read MISC1 register: %d\n", ret);
1021                 goto out;
1022         }
1023 
1024         if (pdata && (pdata->i2c_port == PI2C_PORT))
1025                 data = PM8607_B0_MISC1_PI2C;
1026         else
1027                 data = 0;
1028         ret = pm860x_set_bits(i2c, PM8607_B0_MISC1, PM8607_B0_MISC1_PI2C, data);
1029         if (ret < 0) {
1030                 dev_err(chip->dev, "Failed to access MISC1:%d\n", ret);
1031                 goto out;
1032         }
1033 
1034         ret = device_irq_init(chip, pdata);
1035         if (ret < 0)
1036                 goto out;
1037 
1038         device_regulator_init(chip, pdata);
1039         device_rtc_init(chip, pdata);
1040         device_onkey_init(chip, pdata);
1041         device_touch_init(chip, pdata);
1042         device_power_init(chip, pdata);
1043         device_codec_init(chip, pdata);
1044 out:
1045         return;
1046 }
1047 
1048 static void device_8606_init(struct pm860x_chip *chip,
1049                                        struct i2c_client *i2c,
1050                                        struct pm860x_platform_data *pdata)
1051 {
1052         device_osc_init(i2c);
1053         device_bk_init(chip, pdata);
1054         device_led_init(chip, pdata);
1055 }
1056 
1057 static int pm860x_device_init(struct pm860x_chip *chip,
1058                                         struct pm860x_platform_data *pdata)
1059 {
1060         chip->core_irq = 0;
1061 
1062         switch (chip->id) {
1063         case CHIP_PM8606:
1064                 device_8606_init(chip, chip->client, pdata);
1065                 break;
1066         case CHIP_PM8607:
1067                 device_8607_init(chip, chip->client, pdata);
1068                 break;
1069         }
1070 
1071         if (chip->companion) {
1072                 switch (chip->id) {
1073                 case CHIP_PM8607:
1074                         device_8606_init(chip, chip->companion, pdata);
1075                         break;
1076                 case CHIP_PM8606:
1077                         device_8607_init(chip, chip->companion, pdata);
1078                         break;
1079                 }
1080         }
1081 
1082         return 0;
1083 }
1084 
1085 static void pm860x_device_exit(struct pm860x_chip *chip)
1086 {
1087         device_irq_exit(chip);
1088         mfd_remove_devices(chip->dev);
1089 }
1090 
1091 static int verify_addr(struct i2c_client *i2c)
1092 {
1093         unsigned short addr_8607[] = {0x30, 0x34};
1094         unsigned short addr_8606[] = {0x10, 0x11};
1095         int size, i;
1096 
1097         if (i2c == NULL)
1098                 return 0;
1099         size = ARRAY_SIZE(addr_8606);
1100         for (i = 0; i < size; i++) {
1101                 if (i2c->addr == *(addr_8606 + i))
1102                         return CHIP_PM8606;
1103         }
1104         size = ARRAY_SIZE(addr_8607);
1105         for (i = 0; i < size; i++) {
1106                 if (i2c->addr == *(addr_8607 + i))
1107                         return CHIP_PM8607;
1108         }
1109         return 0;
1110 }
1111 
1112 static const struct regmap_config pm860x_regmap_config = {
1113         .reg_bits = 8,
1114         .val_bits = 8,
1115 };
1116 
1117 static int pm860x_dt_init(struct device_node *np,
1118                                     struct device *dev,
1119                                     struct pm860x_platform_data *pdata)
1120 {
1121         int ret;
1122 
1123         if (of_get_property(np, "marvell,88pm860x-irq-read-clr", NULL))
1124                 pdata->irq_mode = 1;
1125         ret = of_property_read_u32(np, "marvell,88pm860x-slave-addr",
1126                                    &pdata->companion_addr);
1127         if (ret) {
1128                 dev_err(dev,
1129                         "Not found \"marvell,88pm860x-slave-addr\" property\n");
1130                 pdata->companion_addr = 0;
1131         }
1132         return 0;
1133 }
1134 
1135 static int pm860x_probe(struct i2c_client *client,
1136                                   const struct i2c_device_id *id)
1137 {
1138         struct pm860x_platform_data *pdata = dev_get_platdata(&client->dev);
1139         struct device_node *node = client->dev.of_node;
1140         struct pm860x_chip *chip;
1141         int ret;
1142 
1143         if (node && !pdata) {
1144                 /* parse DT to get platform data */
1145                 pdata = devm_kzalloc(&client->dev,
1146                                      sizeof(struct pm860x_platform_data),
1147                                      GFP_KERNEL);
1148                 if (!pdata)
1149                         return -ENOMEM;
1150                 ret = pm860x_dt_init(node, &client->dev, pdata);
1151                 if (ret)
1152                         return ret;
1153         } else if (!pdata) {
1154                 pr_info("No platform data in %s!\n", __func__);
1155                 return -EINVAL;
1156         }
1157 
1158         chip = devm_kzalloc(&client->dev,
1159                             sizeof(struct pm860x_chip), GFP_KERNEL);
1160         if (chip == NULL)
1161                 return -ENOMEM;
1162 
1163         chip->id = verify_addr(client);
1164         chip->regmap = devm_regmap_init_i2c(client, &pm860x_regmap_config);
1165         if (IS_ERR(chip->regmap)) {
1166                 ret = PTR_ERR(chip->regmap);
1167                 dev_err(&client->dev, "Failed to allocate register map: %d\n",
1168                                 ret);
1169                 return ret;
1170         }
1171         chip->client = client;
1172         i2c_set_clientdata(client, chip);
1173         chip->dev = &client->dev;
1174         dev_set_drvdata(chip->dev, chip);
1175 
1176         /*
1177          * Both client and companion client shares same platform driver.
1178          * Driver distinguishes them by pdata->companion_addr.
1179          * pdata->companion_addr is only assigned if companion chip exists.
1180          * At the same time, the companion_addr shouldn't equal to client
1181          * address.
1182          */
1183         if (pdata->companion_addr && (pdata->companion_addr != client->addr)) {
1184                 chip->companion_addr = pdata->companion_addr;
1185                 chip->companion = i2c_new_dummy(chip->client->adapter,
1186                                                 chip->companion_addr);
1187                 if (!chip->companion) {
1188                         dev_err(&client->dev,
1189                                 "Failed to allocate I2C companion device\n");
1190                         return -ENODEV;
1191                 }
1192                 chip->regmap_companion = regmap_init_i2c(chip->companion,
1193                                                         &pm860x_regmap_config);
1194                 if (IS_ERR(chip->regmap_companion)) {
1195                         ret = PTR_ERR(chip->regmap_companion);
1196                         dev_err(&chip->companion->dev,
1197                                 "Failed to allocate register map: %d\n", ret);
1198                         i2c_unregister_device(chip->companion);
1199                         return ret;
1200                 }
1201                 i2c_set_clientdata(chip->companion, chip);
1202         }
1203 
1204         pm860x_device_init(chip, pdata);
1205         return 0;
1206 }
1207 
1208 static int pm860x_remove(struct i2c_client *client)
1209 {
1210         struct pm860x_chip *chip = i2c_get_clientdata(client);
1211 
1212         pm860x_device_exit(chip);
1213         if (chip->companion) {
1214                 regmap_exit(chip->regmap_companion);
1215                 i2c_unregister_device(chip->companion);
1216         }
1217         return 0;
1218 }
1219 
1220 #ifdef CONFIG_PM_SLEEP
1221 static int pm860x_suspend(struct device *dev)
1222 {
1223         struct i2c_client *client = to_i2c_client(dev);
1224         struct pm860x_chip *chip = i2c_get_clientdata(client);
1225 
1226         if (device_may_wakeup(dev) && chip->wakeup_flag)
1227                 enable_irq_wake(chip->core_irq);
1228         return 0;
1229 }
1230 
1231 static int pm860x_resume(struct device *dev)
1232 {
1233         struct i2c_client *client = to_i2c_client(dev);
1234         struct pm860x_chip *chip = i2c_get_clientdata(client);
1235 
1236         if (device_may_wakeup(dev) && chip->wakeup_flag)
1237                 disable_irq_wake(chip->core_irq);
1238         return 0;
1239 }
1240 #endif
1241 
1242 static SIMPLE_DEV_PM_OPS(pm860x_pm_ops, pm860x_suspend, pm860x_resume);
1243 
1244 static const struct i2c_device_id pm860x_id_table[] = {
1245         { "88PM860x", 0 },
1246         {}
1247 };
1248 MODULE_DEVICE_TABLE(i2c, pm860x_id_table);
1249 
1250 static const struct of_device_id pm860x_dt_ids[] = {
1251         { .compatible = "marvell,88pm860x", },
1252         {},
1253 };
1254 MODULE_DEVICE_TABLE(of, pm860x_dt_ids);
1255 
1256 static struct i2c_driver pm860x_driver = {
1257         .driver = {
1258                 .name   = "88PM860x",
1259                 .pm     = &pm860x_pm_ops,
1260                 .of_match_table = pm860x_dt_ids,
1261         },
1262         .probe          = pm860x_probe,
1263         .remove         = pm860x_remove,
1264         .id_table       = pm860x_id_table,
1265 };
1266 
1267 static int __init pm860x_i2c_init(void)
1268 {
1269         int ret;
1270 
1271         ret = i2c_add_driver(&pm860x_driver);
1272         if (ret != 0)
1273                 pr_err("Failed to register 88PM860x I2C driver: %d\n", ret);
1274         return ret;
1275 }
1276 subsys_initcall(pm860x_i2c_init);
1277 
1278 static void __exit pm860x_i2c_exit(void)
1279 {
1280         i2c_del_driver(&pm860x_driver);
1281 }
1282 module_exit(pm860x_i2c_exit);
1283 
1284 MODULE_DESCRIPTION("PMIC Driver for Marvell 88PM860x");
1285 MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
1286 MODULE_LICENSE("GPL");
1287 

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