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regulator: add 88PM8607 PMIC driver
[GitHub/LineageOS/android_kernel_motorola_exynos9610.git] / drivers / regulator / 88pm8607.c
CommitLineData
be0e2d3e
HZ		 1/*
2 * Regulators 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#include <linux/kernel.h>
12#include <linux/init.h>
13#include <linux/err.h>
14#include <linux/platform_device.h>
15#include <linux/regulator/driver.h>
16#include <linux/regulator/machine.h>
17#include <linux/mfd/88pm8607.h>
18
19struct pm8607_regulator_info {
20 struct regulator_desc desc;
21 struct pm8607_chip *chip;
22 struct regulator_dev *regulator;
23
24 int min_uV;
25 int max_uV;
26 int step_uV;
27 int vol_reg;
28 int vol_shift;
29 int vol_nbits;
30 int update_reg;
31 int update_bit;
32 int enable_reg;
33 int enable_bit;
34 int slope_double;
35};
36
37static inline int check_range(struct pm8607_regulator_info *info,
38 int min_uV, int max_uV)
39{
40 if (max_uV < info->min_uV || min_uV > info->max_uV || min_uV > max_uV)
41 return -EINVAL;
42
43 return 0;
44}
45
46static int pm8607_list_voltage(struct regulator_dev *rdev, unsigned index)
47{
48 struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
49 uint8_t chip_id = info->chip->chip_id;
50 int ret = -EINVAL;
51
52 switch (info->desc.id) {
53 case PM8607_ID_BUCK1:
54 ret = (index < 0x1d) ? (index * 25000 + 800000) :
55 ((index < 0x20) ? 1500000 :
56 ((index < 0x40) ? ((index - 0x20) * 25000) :
57 -EINVAL));
58 break;
59 case PM8607_ID_BUCK3:
60 ret = (index < 0x3d) ? (index * 25000) :
61 ((index < 0x40) ? 1500000 : -EINVAL);
62 if (ret < 0)
63 break;
64 if (info->slope_double)
65 ret <<= 1;
66 break;
67 case PM8607_ID_LDO1:
68 ret = (index == 0) ? 1800000 :
69 ((index == 1) ? 1200000 :
70 ((index == 2) ? 2800000 : -EINVAL));
71 break;
72 case PM8607_ID_LDO5:
73 ret = (index == 0) ? 2900000 :
74 ((index == 1) ? 3000000 :
75 ((index == 2) ? 3100000 : 3300000));
76 break;
77 case PM8607_ID_LDO7:
78 case PM8607_ID_LDO8:
79 ret = (index < 3) ? (index * 50000 + 1800000) :
80 ((index < 8) ? (index * 50000 + 2550000) :
81 -EINVAL);
82 break;
83 case PM8607_ID_LDO12:
84 ret = (index < 2) ? (index * 100000 + 1800000) :
85 ((index < 7) ? (index * 100000 + 2500000) :
86 ((index == 7) ? 3300000 : 1200000));
87 break;
88 case PM8607_ID_LDO2:
89 case PM8607_ID_LDO3:
90 case PM8607_ID_LDO9:
91 switch (chip_id) {
92 case PM8607_CHIP_A0:
93 case PM8607_CHIP_A1:
94 ret = (index < 3) ? (index * 50000 + 1800000) :
95 ((index < 8) ? (index * 50000 + 2550000) :
96 -EINVAL);
97 break;
98 case PM8607_CHIP_B0:
99 ret = (index < 3) ? (index * 50000 + 1800000) :
100 ((index < 7) ? (index * 50000 + 2550000) :
101 3300000);
102 break;
103 }
104 break;
105 case PM8607_ID_LDO4:
106 switch (chip_id) {
107 case PM8607_CHIP_A0:
108 case PM8607_CHIP_A1:
109 ret = (index < 3) ? (index * 50000 + 1800000) :
110 ((index < 8) ? (index * 50000 + 2550000) :
111 -EINVAL);
112 break;
113 case PM8607_CHIP_B0:
114 ret = (index < 3) ? (index * 50000 + 1800000) :
115 ((index < 6) ? (index * 50000 + 2550000) :
116 ((index == 6) ? 2900000 : 3300000));
117 break;
118 }
119 break;
120 case PM8607_ID_LDO6:
121 switch (chip_id) {
122 case PM8607_CHIP_A0:
123 case PM8607_CHIP_A1:
124 ret = (index < 3) ? (index * 50000 + 1800000) :
125 ((index < 8) ? (index * 50000 + 2450000) :
126 -EINVAL);
127 break;
128 case PM8607_CHIP_B0:
129 ret = (index < 2) ? (index * 50000 + 1800000) :
130 ((index < 7) ? (index * 50000 + 2500000) :
131 3300000);
132 break;
133 }
134 break;
135 case PM8607_ID_LDO10:
136 switch (chip_id) {
137 case PM8607_CHIP_A0:
138 case PM8607_CHIP_A1:
139 ret = (index < 3) ? (index * 50000 + 1800000) :
140 ((index < 8) ? (index * 50000 + 2550000) :
141 1200000);
142 break;
143 case PM8607_CHIP_B0:
144 ret = (index < 3) ? (index * 50000 + 1800000) :
145 ((index < 7) ? (index * 50000 + 2550000) :
146 ((index == 7) ? 3300000 : 1200000));
147 break;
148 }
149 break;
150 case PM8607_ID_LDO14:
151 switch (chip_id) {
152 case PM8607_CHIP_A0:
153 case PM8607_CHIP_A1:
154 ret = (index < 3) ? (index * 50000 + 1800000) :
155 ((index < 8) ? (index * 50000 + 2550000) :
156 -EINVAL);
157 break;
158 case PM8607_CHIP_B0:
159 ret = (index < 2) ? (index * 50000 + 1800000) :
160 ((index < 7) ? (index * 50000 + 2600000) :
161 3300000);
162 break;
163 }
164 break;
165 }
166 return ret;
167}
168
169static int choose_voltage(struct regulator_dev *rdev, int min_uV, int max_uV)
170{
171 struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
172 uint8_t chip_id = info->chip->chip_id;
173 int val, ret;
174
175 switch (info->desc.id) {
176 case PM8607_ID_BUCK1:
177 if (min_uV >= 800000) /* 800mV ~ 1500mV / 25mV */
178 val = (min_uV - 775001) / 25000;
179 else { /* 25mV ~ 775mV / 25mV */
180 val = (min_uV + 249999) / 25000;
181 val += 32;
182 }
183 break;
184 case PM8607_ID_BUCK3:
185 if (info->slope_double)
186 min_uV = min_uV >> 1;
187 val = (min_uV + 249999) / 25000; /* 0mV ~ 1500mV / 25mV */
188
189 break;
190 case PM8607_ID_LDO1:
191 if (min_uV > 1800000)
192 val = 2;
193 else if (min_uV > 1200000)
194 val = 0;
195 else
196 val = 1;
197 break;
198 case PM8607_ID_LDO5:
199 if (min_uV > 3100000)
200 val = 3;
201 else /* 2900mV ~ 3100mV / 100mV */
202 val = (min_uV - 2800001) / 100000;
203 break;
204 case PM8607_ID_LDO7:
205 case PM8607_ID_LDO8:
206 if (min_uV < 2700000) { /* 1800mV ~ 1900mV / 50mV */
207 if (min_uV <= 1800000)
208 val = 0; /* 1800mv */
209 else if (min_uV <= 1900000)
210 val = (min_uV - 1750001) / 50000;
211 else
212 val = 3; /* 2700mV */
213 } else { /* 2700mV ~ 2900mV / 50mV */
214 if (min_uV <= 2900000) {
215 val = (min_uV - 2650001) / 50000;
216 val += 3;
217 } else
218 val = -EINVAL;
219 }
220 break;
221 case PM8607_ID_LDO10:
222 if (min_uV > 2850000)
223 val = 7;
224 else if (min_uV <= 1200000)
225 val = 8;
226 else if (min_uV < 2700000) /* 1800mV ~ 1900mV / 50mV */
227 val = (min_uV - 1750001) / 50000;
228 else { /* 2700mV ~ 2850mV / 50mV */
229 val = (min_uV - 2650001) / 50000;
230 val += 3;
231 }
232 break;
233 case PM8607_ID_LDO12:
234 if (min_uV < 2700000) { /* 1800mV ~ 1900mV / 100mV */
235 if (min_uV <= 1200000)
236 val = 8; /* 1200mV */
237 else if (min_uV <= 1800000)
238 val = 0; /* 1800mV */
239 else if (min_uV <= 1900000)
240 val = (min_uV - 1700001) / 100000;
241 else
242 val = 2; /* 2700mV */
243 } else { /* 2700mV ~ 3100mV / 100mV */
244 if (min_uV <= 3100000) {
245 val = (min_uV - 2600001) / 100000;
246 val += 2;
247 } else if (min_uV <= 3300000)
248 val = 7;
249 else
250 val = -EINVAL;
251 }
252 break;
253 case PM8607_ID_LDO2:
254 case PM8607_ID_LDO3:
255 case PM8607_ID_LDO9:
256 switch (chip_id) {
257 case PM8607_CHIP_A0:
258 case PM8607_CHIP_A1:
259 if (min_uV < 2700000) /* 1800mV ~ 1900mV / 50mV */
260 if (min_uV <= 1800000)
261 val = 0;
262 else if (min_uV <= 1900000)
263 val = (min_uV - 1750001) / 50000;
264 else
265 val = 3; /* 2700mV */
266 else { /* 2700mV ~ 2900mV / 50mV */
267 if (min_uV <= 2900000) {
268 val = (min_uV - 2650001) / 50000;
269 val += 3;
270 } else
271 val = -EINVAL;
272 }
273 break;
274 case PM8607_CHIP_B0:
275 if (min_uV < 2700000) { /* 1800mV ~ 1900mV / 50mV */
276 if (min_uV <= 1800000)
277 val = 0;
278 else if (min_uV <= 1900000)
279 val = (min_uV - 1750001) / 50000;
280 else
281 val = 3; /* 2700mV */
282 } else { /* 2700mV ~ 2850mV / 50mV */
283 if (min_uV <= 2850000) {
284 val = (min_uV - 2650001) / 50000;
285 val += 3;
286 } else if (min_uV <= 3300000)
287 val = 7;
288 else
289 val = -EINVAL;
290 }
291 break;
292 }
293 break;
294 case PM8607_ID_LDO4:
295 switch (chip_id) {
296 case PM8607_CHIP_A0:
297 case PM8607_CHIP_A1:
298 if (min_uV < 2700000) /* 1800mV ~ 1900mV / 50mV */
299 if (min_uV <= 1800000)
300 val = 0;
301 else if (min_uV <= 1900000)
302 val = (min_uV - 1750001) / 50000;
303 else
304 val = 3; /* 2700mV */
305 else { /* 2700mV ~ 2900mV / 50mV */
306 if (min_uV <= 2900000) {
307 val = (min_uV - 2650001) / 50000;
308 val += 3;
309 } else
310 val = -EINVAL;
311 }
312 break;
313 case PM8607_CHIP_B0:
314 if (min_uV < 2700000) { /* 1800mV ~ 1900mV / 50mV */
315 if (min_uV <= 1800000)
316 val = 0;
317 else if (min_uV <= 1900000)
318 val = (min_uV - 1750001) / 50000;
319 else
320 val = 3; /* 2700mV */
321 } else { /* 2700mV ~ 2800mV / 50mV */
322 if (min_uV <= 2850000) {
323 val = (min_uV - 2650001) / 50000;
324 val += 3;
325 } else if (min_uV <= 2900000)
326 val = 6;
327 else if (min_uV <= 3300000)
328 val = 7;
329 else
330 val = -EINVAL;
331 }
332 break;
333 }
334 break;
335 case PM8607_ID_LDO6:
336 switch (chip_id) {
337 case PM8607_CHIP_A0:
338 case PM8607_CHIP_A1:
339 if (min_uV < 2600000) { /* 1800mV ~ 1900mV / 50mV */
340 if (min_uV <= 1800000)
341 val = 0;
342 else if (min_uV <= 1900000)
343 val = (min_uV - 1750001) / 50000;
344 else
345 val = 3; /* 2600mV */
346 } else { /* 2600mV ~ 2800mV / 50mV */
347 if (min_uV <= 2800000) {
348 val = (min_uV - 2550001) / 50000;
349 val += 3;
350 } else
351 val = -EINVAL;
352 }
353 break;
354 case PM8607_CHIP_B0:
355 if (min_uV < 2600000) { /* 1800mV ~ 1850mV / 50mV */
356 if (min_uV <= 1800000)
357 val = 0;
358 else if (min_uV <= 1850000)
359 val = (min_uV - 1750001) / 50000;
360 else
361 val = 2; /* 2600mV */
362 } else { /* 2600mV ~ 2800mV / 50mV */
363 if (min_uV <= 2800000) {
364 val = (min_uV - 2550001) / 50000;
365 val += 2;
366 } else if (min_uV <= 3300000)
367 val = 7;
368 else
369 val = -EINVAL;
370 }
371 break;
372 }
373 break;
374 case PM8607_ID_LDO14:
375 switch (chip_id) {
376 case PM8607_CHIP_A0:
377 case PM8607_CHIP_A1:
378 if (min_uV < 2700000) { /* 1800mV ~ 1900mV / 50mV */
379 if (min_uV <= 1800000)
380 val = 0;
381 else if (min_uV <= 1900000)
382 val = (min_uV - 1750001) / 50000;
383 else
384 val = 3; /* 2700mV */
385 } else { /* 2700mV ~ 2900mV / 50mV */
386 if (min_uV <= 2900000) {
387 val = (min_uV - 2650001) / 50000;
388 val += 3;
389 } else
390 val = -EINVAL;
391 }
392 break;
393 case PM8607_CHIP_B0:
394 if (min_uV < 2700000) { /* 1800mV ~ 1850mV / 50mV */
395 if (min_uV <= 1800000)
396 val = 0;
397 else if (min_uV <= 1850000)
398 val = (min_uV - 1750001) / 50000;
399 else
400 val = 2; /* 2700mV */
401 } else { /* 2700mV ~ 2900mV / 50mV */
402 if (min_uV <= 2900000) {
403 val = (min_uV - 2650001) / 50000;
404 val += 2;
405 } else if (min_uV <= 3300000)
406 val = 7;
407 else
408 val = -EINVAL;
409 }
410 break;
411 }
412 break;
413 }
414 if (val >= 0) {
415 ret = pm8607_list_voltage(rdev, val);
416 if (ret > max_uV) {
417 pr_err("exceed voltage range (%d %d) uV",
418 min_uV, max_uV);
419 return -EINVAL;
420 }
421 } else
422 pr_err("invalid voltage range (%d %d) uV", min_uV, max_uV);
423 return val;
424}
425
426static int pm8607_set_voltage(struct regulator_dev *rdev,
427 int min_uV, int max_uV)
428{
429 struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
430 struct pm8607_chip *chip = info->chip;
431 uint8_t val, mask;
432 int ret;
433
434 if (check_range(info, min_uV, max_uV)) {
435 pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);
436 return -EINVAL;
437 }
438
439 ret = choose_voltage(rdev, min_uV, max_uV);
440 if (ret < 0)
441 return -EINVAL;
442 val = (uint8_t)(ret << info->vol_shift);
443 mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
444
445 ret = pm8607_set_bits(chip, info->vol_reg, mask, val);
446 if (ret)
447 return ret;
448 switch (info->desc.id) {
449 case PM8607_ID_BUCK1:
450 case PM8607_ID_BUCK3:
451 ret = pm8607_set_bits(chip, info->update_reg,
452 1 << info->update_bit,
453 1 << info->update_bit);
454 break;
455 }
456 return ret;
457}
458
459static int pm8607_get_voltage(struct regulator_dev *rdev)
460{
461 struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
462 struct pm8607_chip *chip = info->chip;
463 uint8_t val, mask;
464 int ret;
465
466 ret = pm8607_reg_read(chip, info->vol_reg);
467 if (ret < 0)
468 return ret;
469
470 mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
471 val = ((unsigned char)ret & mask) >> info->vol_shift;
472
473 return pm8607_list_voltage(rdev, val);
474}
475
476static int pm8607_enable(struct regulator_dev *rdev)
477{
478 struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
479 struct pm8607_chip *chip = info->chip;
480
481 return pm8607_set_bits(chip, info->enable_reg,
482 1 << info->enable_bit,
483 1 << info->enable_bit);
484}
485
486static int pm8607_disable(struct regulator_dev *rdev)
487{
488 struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
489 struct pm8607_chip *chip = info->chip;
490
491 return pm8607_set_bits(chip, info->enable_reg,
492 1 << info->enable_bit, 0);
493}
494
495static int pm8607_is_enabled(struct regulator_dev *rdev)
496{
497 struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
498 struct pm8607_chip *chip = info->chip;
499 int ret;
500
501 ret = pm8607_reg_read(chip, info->enable_reg);
502 if (ret < 0)
503 return ret;
504
505 return !!((unsigned char)ret & (1 << info->enable_bit));
506}
507
508static struct regulator_ops pm8607_regulator_ops = {
509 .set_voltage = pm8607_set_voltage,
510 .get_voltage = pm8607_get_voltage,
511 .enable = pm8607_enable,
512 .disable = pm8607_disable,
513 .is_enabled = pm8607_is_enabled,
514};
515
516#define PM8607_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
517{ \
518 .desc = { \
519 .name = "BUCK" #_id, \
520 .ops = &pm8607_regulator_ops, \
521 .type = REGULATOR_VOLTAGE, \
522 .id = PM8607_ID_BUCK##_id, \
523 .owner = THIS_MODULE, \
524 }, \
525 .min_uV = (min) * 1000, \
526 .max_uV = (max) * 1000, \
527 .step_uV = (step) * 1000, \
528 .vol_reg = PM8607_##vreg, \
529 .vol_shift = (0), \
530 .vol_nbits = (nbits), \
531 .update_reg = PM8607_##ureg, \
532 .update_bit = (ubit), \
533 .enable_reg = PM8607_##ereg, \
534 .enable_bit = (ebit), \
535 .slope_double = (0), \
536}
537
538#define PM8607_LDO(_id, min, max, step, vreg, shift, nbits, ereg, ebit) \
539{ \
540 .desc = { \
541 .name = "LDO" #_id, \
542 .ops = &pm8607_regulator_ops, \
543 .type = REGULATOR_VOLTAGE, \
544 .id = PM8607_ID_LDO##_id, \
545 .owner = THIS_MODULE, \
546 }, \
547 .min_uV = (min) * 1000, \
548 .max_uV = (max) * 1000, \
549 .step_uV = (step) * 1000, \
550 .vol_reg = PM8607_##vreg, \
551 .vol_shift = (shift), \
552 .vol_nbits = (nbits), \
553 .enable_reg = PM8607_##ereg, \
554 .enable_bit = (ebit), \
555 .slope_double = (0), \
556}
557
558static struct pm8607_regulator_info pm8607_regulator_info[] = {
559 PM8607_DVC(1, 0, 1500, 25, BUCK1, 6, GO, 0, SUPPLIES_EN11, 0),
560 PM8607_DVC(3, 0, 1500, 25, BUCK3, 6, GO, 2, SUPPLIES_EN11, 2),
561
562 PM8607_LDO(1 , 1200, 2800, 0, LDO1 , 0, 2, SUPPLIES_EN11, 3),
563 PM8607_LDO(2 , 1800, 3300, 0, LDO2 , 0, 3, SUPPLIES_EN11, 4),
564 PM8607_LDO(3 , 1800, 3300, 0, LDO3 , 0, 3, SUPPLIES_EN11, 5),
565 PM8607_LDO(4 , 1800, 3300, 0, LDO4 , 0, 3, SUPPLIES_EN11, 6),
566 PM8607_LDO(5 , 2900, 3300, 0, LDO5 , 0, 2, SUPPLIES_EN11, 7),
567 PM8607_LDO(6 , 1800, 3300, 0, LDO6 , 0, 3, SUPPLIES_EN12, 0),
568 PM8607_LDO(7 , 1800, 2900, 0, LDO7 , 0, 3, SUPPLIES_EN12, 1),
569 PM8607_LDO(8 , 1800, 2900, 0, LDO8 , 0, 3, SUPPLIES_EN12, 2),
570 PM8607_LDO(9 , 1800, 3300, 0, LDO9 , 0, 3, SUPPLIES_EN12, 3),
571 PM8607_LDO(10, 1200, 3300, 0, LDO10, 0, 4, SUPPLIES_EN11, 4),
572 PM8607_LDO(12, 1200, 3300, 0, LDO12, 0, 4, SUPPLIES_EN11, 5),
573 PM8607_LDO(14, 1800, 3300, 0, LDO14, 0, 3, SUPPLIES_EN11, 6),
574};
575
576static inline struct pm8607_regulator_info *find_regulator_info(int id)
577{
578 struct pm8607_regulator_info *info;
579 int i;
580
581 for (i = 0; i < ARRAY_SIZE(pm8607_regulator_info); i++) {
582 info = &pm8607_regulator_info[i];
583 if (info->desc.id == id)
584 return info;
585 }
586 return NULL;
587}
588
589static int __devinit pm8607_regulator_probe(struct platform_device *pdev)
590{
591 struct pm8607_chip *chip = dev_get_drvdata(pdev->dev.parent);
592 struct pm8607_platform_data *pdata = chip->dev->platform_data;
593 struct pm8607_regulator_info *info = NULL;
594
595 info = find_regulator_info(pdev->id);
596 if (info == NULL) {
597 dev_err(&pdev->dev, "invalid regulator ID specified\n");
598 return -EINVAL;
599 }
600
601 info->chip = chip;
602
603 info->regulator = regulator_register(&info->desc, &pdev->dev,
604 pdata->regulator[pdev->id], info);
605 if (IS_ERR(info->regulator)) {
606 dev_err(&pdev->dev, "failed to register regulator %s\n",
607 info->desc.name);
608 return PTR_ERR(info->regulator);
609 }
610
611 /* check DVC ramp slope double */
612 if (info->desc.id == PM8607_ID_BUCK3)
613 if (info->chip->buck3_double)
614 info->slope_double = 1;
615
616 platform_set_drvdata(pdev, info);
617 return 0;
618}
619
620static int __devexit pm8607_regulator_remove(struct platform_device *pdev)
621{
622 struct pm8607_regulator_info *info = platform_get_drvdata(pdev);
623
624 regulator_unregister(info->regulator);
625 return 0;
626}
627
628#define PM8607_REGULATOR_DRIVER(_name) \
629{ \
630 .driver = { \
631 .name = "88pm8607-" #_name, \
632 .owner = THIS_MODULE, \
633 }, \
634 .probe = pm8607_regulator_probe, \
635 .remove = __devexit_p(pm8607_regulator_remove), \
636}
637
638static struct platform_driver pm8607_regulator_driver[] = {
639 PM8607_REGULATOR_DRIVER(buck1),
640 PM8607_REGULATOR_DRIVER(buck2),
641 PM8607_REGULATOR_DRIVER(buck3),
642 PM8607_REGULATOR_DRIVER(ldo1),
643 PM8607_REGULATOR_DRIVER(ldo2),
644 PM8607_REGULATOR_DRIVER(ldo3),
645 PM8607_REGULATOR_DRIVER(ldo4),
646 PM8607_REGULATOR_DRIVER(ldo5),
647 PM8607_REGULATOR_DRIVER(ldo6),
648 PM8607_REGULATOR_DRIVER(ldo7),
649 PM8607_REGULATOR_DRIVER(ldo8),
650 PM8607_REGULATOR_DRIVER(ldo9),
651 PM8607_REGULATOR_DRIVER(ldo10),
652 PM8607_REGULATOR_DRIVER(ldo12),
653 PM8607_REGULATOR_DRIVER(ldo14),
654};
655
656static int __init pm8607_regulator_init(void)
657{
658 int i, count, ret;
659
660 count = ARRAY_SIZE(pm8607_regulator_driver);
661 for (i = 0; i < count; i++) {
662 ret = platform_driver_register(&pm8607_regulator_driver[i]);
663 if (ret != 0)
664 pr_err("Failed to register regulator driver: %d\n",
665 ret);
666 }
667 return 0;
668}
669subsys_initcall(pm8607_regulator_init);
670
671static void __exit pm8607_regulator_exit(void)
672{
673 int i, count;
674
675 count = ARRAY_SIZE(pm8607_regulator_driver);
676 for (i = 0; i < count; i++)
677 platform_driver_unregister(&pm8607_regulator_driver[i]);
678}
679module_exit(pm8607_regulator_exit);
680
681MODULE_LICENSE("GPL");
682MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
683MODULE_DESCRIPTION("Regulator Driver for Marvell 88PM8607 PMIC");
684MODULE_ALIAS("platform:88pm8607-regulator");