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
32static 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};
37static 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};
42static 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
48static struct resource led0_resources[] = {
49 /* RGB1 Red LED */
50 {0xd, 0xd, "control", IORESOURCE_REG, },
51 {0xc, 0xc, "blink", IORESOURCE_REG, },
52};
53static struct resource led1_resources[] = {
54 /* RGB1 Green LED */
55 {0xe, 0xe, "control", IORESOURCE_REG, },
56 {0xc, 0xc, "blink", IORESOURCE_REG, },
57};
58static struct resource led2_resources[] = {
59 /* RGB1 Blue LED */
60 {0xf, 0xf, "control", IORESOURCE_REG, },
61 {0xc, 0xc, "blink", IORESOURCE_REG, },
62};
63static struct resource led3_resources[] = {
64 /* RGB2 Red LED */
65 {0x9, 0x9, "control", IORESOURCE_REG, },
66 {0x8, 0x8, "blink", IORESOURCE_REG, },
67};
68static struct resource led4_resources[] = {
69 /* RGB2 Green LED */
70 {0xa, 0xa, "control", IORESOURCE_REG, },
71 {0x8, 0x8, "blink", IORESOURCE_REG, },
72};
73static struct resource led5_resources[] = {
74 /* RGB2 Blue LED */
75 {0xb, 0xb, "control", IORESOURCE_REG, },
76 {0x8, 0x8, "blink", IORESOURCE_REG, },
77};
78
79static struct resource buck1_resources[] = {
80 {0x24, 0x24, "buck set", IORESOURCE_REG, },
81};
82static struct resource buck2_resources[] = {
83 {0x25, 0x25, "buck set", IORESOURCE_REG, },
84};
85static struct resource buck3_resources[] = {
86 {0x26, 0x26, "buck set", IORESOURCE_REG, },
87};
88static struct resource ldo1_resources[] = {
89 {0x10, 0x10, "ldo set", IORESOURCE_REG, },
90};
91static struct resource ldo2_resources[] = {
92 {0x11, 0x11, "ldo set", IORESOURCE_REG, },
93};
94static struct resource ldo3_resources[] = {
95 {0x12, 0x12, "ldo set", IORESOURCE_REG, },
96};
97static struct resource ldo4_resources[] = {
98 {0x13, 0x13, "ldo set", IORESOURCE_REG, },
99};
100static struct resource ldo5_resources[] = {
101 {0x14, 0x14, "ldo set", IORESOURCE_REG, },
102};
103static struct resource ldo6_resources[] = {
104 {0x15, 0x15, "ldo set", IORESOURCE_REG, },
105};
106static struct resource ldo7_resources[] = {
107 {0x16, 0x16, "ldo set", IORESOURCE_REG, },
108};
109static struct resource ldo8_resources[] = {
110 {0x17, 0x17, "ldo set", IORESOURCE_REG, },
111};
112static struct resource ldo9_resources[] = {
113 {0x18, 0x18, "ldo set", IORESOURCE_REG, },
114};
115static struct resource ldo10_resources[] = {
116 {0x19, 0x19, "ldo set", IORESOURCE_REG, },
117};
118static struct resource ldo12_resources[] = {
119 {0x1a, 0x1a, "ldo set", IORESOURCE_REG, },
120};
121static struct resource ldo_vibrator_resources[] = {
122 {0x28, 0x28, "ldo set", IORESOURCE_REG, },
123};
124static struct resource ldo14_resources[] = {
125 {0x1b, 0x1b, "ldo set", IORESOURCE_REG, },
126};
127
128static struct resource touch_resources[] = {
129 {PM8607_IRQ_PEN, PM8607_IRQ_PEN, "touch", IORESOURCE_IRQ,},
130};
131
132static struct resource onkey_resources[] = {
133 {PM8607_IRQ_ONKEY, PM8607_IRQ_ONKEY, "onkey", IORESOURCE_IRQ,},
134};
135
136static 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
148static 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
153static 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
167static struct resource rtc_resources[] = {
168 {PM8607_IRQ_RTC, PM8607_IRQ_RTC, "rtc", IORESOURCE_IRQ,},
169};
170
171static 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
190static 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
224static 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
308static struct mfd_cell touch_devs[] = {
309 {"88pm860x-touch", -1,},
310};
311
312static struct mfd_cell onkey_devs[] = {
313 {"88pm860x-onkey", -1,},
314};
315
316static struct mfd_cell codec_devs[] = {
317 {"88pm860x-codec", -1,},
318};
319
320static struct regulator_consumer_supply preg_supply[] = {
321 REGULATOR_SUPPLY("preg", "charger-manager"),
322};
323
324static struct regulator_init_data preg_init_data = {
325 .num_consumer_supplies = ARRAY_SIZE(preg_supply),
326 .consumer_supplies = &preg_supply[0],
327};
328
329static struct charger_regulator chg_desc_regulator_data[] = {
330 { .regulator_name = "preg", },
331};
332
333static struct mfd_cell power_devs[] = {
334 {"88pm860x-battery", -1,},
335 {"88pm860x-charger", -1,},
336 {"88pm860x-preg", -1,},
337 {"charger-manager", -1,},
338};
339
340static struct mfd_cell rtc_devs[] = {
341 {"88pm860x-rtc", -1,},
342};
343
344
345struct 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
352static 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
465static 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
486static 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
493static 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
537static void pm860x_irq_enable(struct irq_data *data)
538{
539 pm860x_irqs[data->hwirq].enable = pm860x_irqs[data->hwirq].offs;
540}
541
542static void pm860x_irq_disable(struct irq_data *data)
543{
544 pm860x_irqs[data->hwirq].enable = 0;
545}
546
547static 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
555static 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
565static const struct irq_domain_ops pm860x_irq_domain_ops = {
566 .map = pm860x_irq_domain_map,
567 .xlate = irq_domain_xlate_onetwocell,
568};
569
570static 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;
644out:
645 chip->core_irq = 0;
646 return ret;
647}
648
649static void device_irq_exit(struct pm860x_chip *chip)
650{
651 if (chip->core_irq)
652 free_irq(chip->core_irq, chip);
653}
654
655int 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;
690out:
691 mutex_unlock(&chip->osc_lock);
692 return ret;
693}
694EXPORT_SYMBOL(pm8606_osc_enable);
695
696int 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;
731out:
732 mutex_unlock(&chip->osc_lock);
733 return ret;
734}
735EXPORT_SYMBOL(pm8606_osc_disable);
736
737static 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
752static 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
772static 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
794static 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
873static 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
892static 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
911static 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
958static 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
972static 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
986static 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);
1044out:
1045 return;
1046}
1047
1048static 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
1057static 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
1085static void pm860x_device_exit(struct pm860x_chip *chip)
1086{
1087 device_irq_exit(chip);
1088 mfd_remove_devices(chip->dev);
1089}
1090
1091static 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
1112static const struct regmap_config pm860x_regmap_config = {
1113 .reg_bits = 8,
1114 .val_bits = 8,
1115};
1116
1117static 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
1135static int pm860x_probe(struct i2c_client *client)
1136{
1137 struct pm860x_platform_data *pdata = dev_get_platdata(&client->dev);
1138 struct device_node *node = client->dev.of_node;
1139 struct pm860x_chip *chip;
1140 int ret;
1141
1142 if (node && !pdata) {
1143 /* parse DT to get platform data */
1144 pdata = devm_kzalloc(&client->dev,
1145 sizeof(struct pm860x_platform_data),
1146 GFP_KERNEL);
1147 if (!pdata)
1148 return -ENOMEM;
1149 ret = pm860x_dt_init(node, &client->dev, pdata);
1150 if (ret)
1151 return ret;
1152 } else if (!pdata) {
1153 pr_info("No platform data in %s!\n", __func__);
1154 return -EINVAL;
1155 }
1156
1157 chip = devm_kzalloc(&client->dev,
1158 sizeof(struct pm860x_chip), GFP_KERNEL);
1159 if (chip == NULL)
1160 return -ENOMEM;
1161
1162 chip->id = verify_addr(client);
1163 chip->regmap = devm_regmap_init_i2c(client, &pm860x_regmap_config);
1164 if (IS_ERR(chip->regmap)) {
1165 ret = PTR_ERR(chip->regmap);
1166 dev_err(&client->dev, "Failed to allocate register map: %d\n",
1167 ret);
1168 return ret;
1169 }
1170 chip->client = client;
1171 i2c_set_clientdata(client, chip);
1172 chip->dev = &client->dev;
1173 dev_set_drvdata(chip->dev, chip);
1174
1175 /*
1176 * Both client and companion client shares same platform driver.
1177 * Driver distinguishes them by pdata->companion_addr.
1178 * pdata->companion_addr is only assigned if companion chip exists.
1179 * At the same time, the companion_addr shouldn't equal to client
1180 * address.
1181 */
1182 if (pdata->companion_addr && (pdata->companion_addr != client->addr)) {
1183 chip->companion_addr = pdata->companion_addr;
1184 chip->companion = i2c_new_dummy(chip->client->adapter,
1185 chip->companion_addr);
1186 if (!chip->companion) {
1187 dev_err(&client->dev,
1188 "Failed to allocate I2C companion device\n");
1189 return -ENODEV;
1190 }
1191 chip->regmap_companion = regmap_init_i2c(chip->companion,
1192 &pm860x_regmap_config);
1193 if (IS_ERR(chip->regmap_companion)) {
1194 ret = PTR_ERR(chip->regmap_companion);
1195 dev_err(&chip->companion->dev,
1196 "Failed to allocate register map: %d\n", ret);
1197 i2c_unregister_device(chip->companion);
1198 return ret;
1199 }
1200 i2c_set_clientdata(chip->companion, chip);
1201 }
1202
1203 pm860x_device_init(chip, pdata);
1204 return 0;
1205}
1206
1207static int pm860x_remove(struct i2c_client *client)
1208{
1209 struct pm860x_chip *chip = i2c_get_clientdata(client);
1210
1211 pm860x_device_exit(chip);
1212 if (chip->companion) {
1213 regmap_exit(chip->regmap_companion);
1214 i2c_unregister_device(chip->companion);
1215 }
1216 return 0;
1217}
1218
1219#ifdef CONFIG_PM_SLEEP
1220static int pm860x_suspend(struct device *dev)
1221{
1222 struct i2c_client *client = to_i2c_client(dev);
1223 struct pm860x_chip *chip = i2c_get_clientdata(client);
1224
1225 if (device_may_wakeup(dev) && chip->wakeup_flag)
1226 enable_irq_wake(chip->core_irq);
1227 return 0;
1228}
1229
1230static int pm860x_resume(struct device *dev)
1231{
1232 struct i2c_client *client = to_i2c_client(dev);
1233 struct pm860x_chip *chip = i2c_get_clientdata(client);
1234
1235 if (device_may_wakeup(dev) && chip->wakeup_flag)
1236 disable_irq_wake(chip->core_irq);
1237 return 0;
1238}
1239#endif
1240
1241static SIMPLE_DEV_PM_OPS(pm860x_pm_ops, pm860x_suspend, pm860x_resume);
1242
1243static const struct i2c_device_id pm860x_id_table[] = {
1244 { "88PM860x", 0 },
1245 {}
1246};
1247MODULE_DEVICE_TABLE(i2c, pm860x_id_table);
1248
1249static const struct of_device_id pm860x_dt_ids[] = {
1250 { .compatible = "marvell,88pm860x", },
1251 {},
1252};
1253MODULE_DEVICE_TABLE(of, pm860x_dt_ids);
1254
1255static struct i2c_driver pm860x_driver = {
1256 .driver = {
1257 .name = "88PM860x",
1258 .pm = &pm860x_pm_ops,
1259 .of_match_table = pm860x_dt_ids,
1260 },
1261 .probe_new = pm860x_probe,
1262 .remove = pm860x_remove,
1263 .id_table = pm860x_id_table,
1264};
1265
1266static int __init pm860x_i2c_init(void)
1267{
1268 int ret;
1269
1270 ret = i2c_add_driver(&pm860x_driver);
1271 if (ret != 0)
1272 pr_err("Failed to register 88PM860x I2C driver: %d\n", ret);
1273 return ret;
1274}
1275subsys_initcall(pm860x_i2c_init);
1276
1277static void __exit pm860x_i2c_exit(void)
1278{
1279 i2c_del_driver(&pm860x_driver);
1280}
1281module_exit(pm860x_i2c_exit);
1282
1283MODULE_DESCRIPTION("PMIC Driver for Marvell 88PM860x");
1284MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
1285MODULE_LICENSE("GPL");
1286