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14#include <linux/init.h>
15#include <linux/kernel.h>
16#include <linux/module.h>
17#include <linux/err.h>
18#include <linux/platform_device.h>
19#include <linux/mfd/abx500.h>
20#include <linux/mfd/abx500/ab8500.h>
21#include <linux/of.h>
22#include <linux/regulator/of_regulator.h>
23#include <linux/regulator/driver.h>
24#include <linux/regulator/machine.h>
25#include <linux/regulator/ab8500.h>
26#include <linux/slab.h>
27
28
29
30
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32
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35
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37
38
39
40
41
42
43struct ab8500_regulator_info {
44 struct device *dev;
45 struct regulator_desc desc;
46 struct regulator_dev *regulator;
47 u8 update_bank;
48 u8 update_reg;
49 u8 update_mask;
50 u8 update_val_enable;
51 u8 voltage_bank;
52 u8 voltage_reg;
53 u8 voltage_mask;
54 u8 voltage_shift;
55 unsigned int delay;
56};
57
58
59static const unsigned int ldo_vauxn_voltages[] = {
60 1100000,
61 1200000,
62 1300000,
63 1400000,
64 1500000,
65 1800000,
66 1850000,
67 1900000,
68 2500000,
69 2650000,
70 2700000,
71 2750000,
72 2800000,
73 2900000,
74 3000000,
75 3300000,
76};
77
78static const unsigned int ldo_vaux3_voltages[] = {
79 1200000,
80 1500000,
81 1800000,
82 2100000,
83 2500000,
84 2750000,
85 2790000,
86 2910000,
87};
88
89static const unsigned int ldo_vintcore_voltages[] = {
90 1200000,
91 1225000,
92 1250000,
93 1275000,
94 1300000,
95 1325000,
96 1350000,
97};
98
99static int ab8500_regulator_enable(struct regulator_dev *rdev)
100{
101 int ret;
102 struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
103
104 if (info == NULL) {
105 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
106 return -EINVAL;
107 }
108
109 ret = abx500_mask_and_set_register_interruptible(info->dev,
110 info->update_bank, info->update_reg,
111 info->update_mask, info->update_val_enable);
112 if (ret < 0)
113 dev_err(rdev_get_dev(rdev),
114 "couldn't set enable bits for regulator\n");
115
116 dev_vdbg(rdev_get_dev(rdev),
117 "%s-enable (bank, reg, mask, value): 0x%x, 0x%x, 0x%x, 0x%x\n",
118 info->desc.name, info->update_bank, info->update_reg,
119 info->update_mask, info->update_val_enable);
120
121 return ret;
122}
123
124static int ab8500_regulator_disable(struct regulator_dev *rdev)
125{
126 int ret;
127 struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
128
129 if (info == NULL) {
130 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
131 return -EINVAL;
132 }
133
134 ret = abx500_mask_and_set_register_interruptible(info->dev,
135 info->update_bank, info->update_reg,
136 info->update_mask, 0x0);
137 if (ret < 0)
138 dev_err(rdev_get_dev(rdev),
139 "couldn't set disable bits for regulator\n");
140
141 dev_vdbg(rdev_get_dev(rdev),
142 "%s-disable (bank, reg, mask, value): 0x%x, 0x%x, 0x%x, 0x%x\n",
143 info->desc.name, info->update_bank, info->update_reg,
144 info->update_mask, 0x0);
145
146 return ret;
147}
148
149static int ab8500_regulator_is_enabled(struct regulator_dev *rdev)
150{
151 int ret;
152 struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
153 u8 regval;
154
155 if (info == NULL) {
156 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
157 return -EINVAL;
158 }
159
160 ret = abx500_get_register_interruptible(info->dev,
161 info->update_bank, info->update_reg, ®val);
162 if (ret < 0) {
163 dev_err(rdev_get_dev(rdev),
164 "couldn't read 0x%x register\n", info->update_reg);
165 return ret;
166 }
167
168 dev_vdbg(rdev_get_dev(rdev),
169 "%s-is_enabled (bank, reg, mask, value): 0x%x, 0x%x, 0x%x,"
170 " 0x%x\n",
171 info->desc.name, info->update_bank, info->update_reg,
172 info->update_mask, regval);
173
174 if (regval & info->update_mask)
175 return true;
176 else
177 return false;
178}
179
180static int ab8500_regulator_get_voltage_sel(struct regulator_dev *rdev)
181{
182 int ret, val;
183 struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
184 u8 regval;
185
186 if (info == NULL) {
187 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
188 return -EINVAL;
189 }
190
191 ret = abx500_get_register_interruptible(info->dev,
192 info->voltage_bank, info->voltage_reg, ®val);
193 if (ret < 0) {
194 dev_err(rdev_get_dev(rdev),
195 "couldn't read voltage reg for regulator\n");
196 return ret;
197 }
198
199 dev_vdbg(rdev_get_dev(rdev),
200 "%s-get_voltage (bank, reg, mask, shift, value): "
201 "0x%x, 0x%x, 0x%x, 0x%x, 0x%x\n",
202 info->desc.name, info->voltage_bank,
203 info->voltage_reg, info->voltage_mask,
204 info->voltage_shift, regval);
205
206 val = regval & info->voltage_mask;
207 return val >> info->voltage_shift;
208}
209
210static int ab8500_regulator_set_voltage_sel(struct regulator_dev *rdev,
211 unsigned selector)
212{
213 int ret;
214 struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
215 u8 regval;
216
217 if (info == NULL) {
218 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
219 return -EINVAL;
220 }
221
222
223 regval = (u8)selector << info->voltage_shift;
224 ret = abx500_mask_and_set_register_interruptible(info->dev,
225 info->voltage_bank, info->voltage_reg,
226 info->voltage_mask, regval);
227 if (ret < 0)
228 dev_err(rdev_get_dev(rdev),
229 "couldn't set voltage reg for regulator\n");
230
231 dev_vdbg(rdev_get_dev(rdev),
232 "%s-set_voltage (bank, reg, mask, value): 0x%x, 0x%x, 0x%x,"
233 " 0x%x\n",
234 info->desc.name, info->voltage_bank, info->voltage_reg,
235 info->voltage_mask, regval);
236
237 return ret;
238}
239
240static int ab8500_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
241 unsigned int old_sel,
242 unsigned int new_sel)
243{
244 struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
245
246 return info->delay;
247}
248
249static struct regulator_ops ab8500_regulator_ops = {
250 .enable = ab8500_regulator_enable,
251 .disable = ab8500_regulator_disable,
252 .is_enabled = ab8500_regulator_is_enabled,
253 .get_voltage_sel = ab8500_regulator_get_voltage_sel,
254 .set_voltage_sel = ab8500_regulator_set_voltage_sel,
255 .list_voltage = regulator_list_voltage_table,
256 .set_voltage_time_sel = ab8500_regulator_set_voltage_time_sel,
257};
258
259static struct regulator_ops ab8500_regulator_fixed_ops = {
260 .enable = ab8500_regulator_enable,
261 .disable = ab8500_regulator_disable,
262 .is_enabled = ab8500_regulator_is_enabled,
263 .list_voltage = regulator_list_voltage_linear,
264};
265
266static struct ab8500_regulator_info
267 ab8500_regulator_info[AB8500_NUM_REGULATORS] = {
268
269
270
271
272
273
274 [AB8500_LDO_AUX1] = {
275 .desc = {
276 .name = "LDO-AUX1",
277 .ops = &ab8500_regulator_ops,
278 .type = REGULATOR_VOLTAGE,
279 .id = AB8500_LDO_AUX1,
280 .owner = THIS_MODULE,
281 .n_voltages = ARRAY_SIZE(ldo_vauxn_voltages),
282 .volt_table = ldo_vauxn_voltages,
283 },
284 .update_bank = 0x04,
285 .update_reg = 0x09,
286 .update_mask = 0x03,
287 .update_val_enable = 0x01,
288 .voltage_bank = 0x04,
289 .voltage_reg = 0x1f,
290 .voltage_mask = 0x0f,
291 },
292 [AB8500_LDO_AUX2] = {
293 .desc = {
294 .name = "LDO-AUX2",
295 .ops = &ab8500_regulator_ops,
296 .type = REGULATOR_VOLTAGE,
297 .id = AB8500_LDO_AUX2,
298 .owner = THIS_MODULE,
299 .n_voltages = ARRAY_SIZE(ldo_vauxn_voltages),
300 .volt_table = ldo_vauxn_voltages,
301 },
302 .update_bank = 0x04,
303 .update_reg = 0x09,
304 .update_mask = 0x0c,
305 .update_val_enable = 0x04,
306 .voltage_bank = 0x04,
307 .voltage_reg = 0x20,
308 .voltage_mask = 0x0f,
309 },
310 [AB8500_LDO_AUX3] = {
311 .desc = {
312 .name = "LDO-AUX3",
313 .ops = &ab8500_regulator_ops,
314 .type = REGULATOR_VOLTAGE,
315 .id = AB8500_LDO_AUX3,
316 .owner = THIS_MODULE,
317 .n_voltages = ARRAY_SIZE(ldo_vaux3_voltages),
318 .volt_table = ldo_vaux3_voltages,
319 },
320 .update_bank = 0x04,
321 .update_reg = 0x0a,
322 .update_mask = 0x03,
323 .update_val_enable = 0x01,
324 .voltage_bank = 0x04,
325 .voltage_reg = 0x21,
326 .voltage_mask = 0x07,
327 },
328 [AB8500_LDO_INTCORE] = {
329 .desc = {
330 .name = "LDO-INTCORE",
331 .ops = &ab8500_regulator_ops,
332 .type = REGULATOR_VOLTAGE,
333 .id = AB8500_LDO_INTCORE,
334 .owner = THIS_MODULE,
335 .n_voltages = ARRAY_SIZE(ldo_vintcore_voltages),
336 .volt_table = ldo_vintcore_voltages,
337 },
338 .update_bank = 0x03,
339 .update_reg = 0x80,
340 .update_mask = 0x44,
341 .update_val_enable = 0x04,
342 .voltage_bank = 0x03,
343 .voltage_reg = 0x80,
344 .voltage_mask = 0x38,
345 .voltage_shift = 3,
346 },
347
348
349
350
351
352
353 [AB8500_LDO_TVOUT] = {
354 .desc = {
355 .name = "LDO-TVOUT",
356 .ops = &ab8500_regulator_fixed_ops,
357 .type = REGULATOR_VOLTAGE,
358 .id = AB8500_LDO_TVOUT,
359 .owner = THIS_MODULE,
360 .n_voltages = 1,
361 .min_uV = 2000000,
362 .enable_time = 10000,
363 },
364 .delay = 10000,
365 .update_bank = 0x03,
366 .update_reg = 0x80,
367 .update_mask = 0x82,
368 .update_val_enable = 0x02,
369 },
370 [AB8500_LDO_USB] = {
371 .desc = {
372 .name = "LDO-USB",
373 .ops = &ab8500_regulator_fixed_ops,
374 .type = REGULATOR_VOLTAGE,
375 .id = AB8500_LDO_USB,
376 .owner = THIS_MODULE,
377 .n_voltages = 1,
378 .min_uV = 3300000,
379 },
380 .update_bank = 0x03,
381 .update_reg = 0x82,
382 .update_mask = 0x03,
383 .update_val_enable = 0x01,
384 },
385 [AB8500_LDO_AUDIO] = {
386 .desc = {
387 .name = "LDO-AUDIO",
388 .ops = &ab8500_regulator_fixed_ops,
389 .type = REGULATOR_VOLTAGE,
390 .id = AB8500_LDO_AUDIO,
391 .owner = THIS_MODULE,
392 .n_voltages = 1,
393 .min_uV = 2000000,
394 },
395 .update_bank = 0x03,
396 .update_reg = 0x83,
397 .update_mask = 0x02,
398 .update_val_enable = 0x02,
399 },
400 [AB8500_LDO_ANAMIC1] = {
401 .desc = {
402 .name = "LDO-ANAMIC1",
403 .ops = &ab8500_regulator_fixed_ops,
404 .type = REGULATOR_VOLTAGE,
405 .id = AB8500_LDO_ANAMIC1,
406 .owner = THIS_MODULE,
407 .n_voltages = 1,
408 .min_uV = 2050000,
409 },
410 .update_bank = 0x03,
411 .update_reg = 0x83,
412 .update_mask = 0x08,
413 .update_val_enable = 0x08,
414 },
415 [AB8500_LDO_ANAMIC2] = {
416 .desc = {
417 .name = "LDO-ANAMIC2",
418 .ops = &ab8500_regulator_fixed_ops,
419 .type = REGULATOR_VOLTAGE,
420 .id = AB8500_LDO_ANAMIC2,
421 .owner = THIS_MODULE,
422 .n_voltages = 1,
423 .min_uV = 2050000,
424 },
425 .update_bank = 0x03,
426 .update_reg = 0x83,
427 .update_mask = 0x10,
428 .update_val_enable = 0x10,
429 },
430 [AB8500_LDO_DMIC] = {
431 .desc = {
432 .name = "LDO-DMIC",
433 .ops = &ab8500_regulator_fixed_ops,
434 .type = REGULATOR_VOLTAGE,
435 .id = AB8500_LDO_DMIC,
436 .owner = THIS_MODULE,
437 .n_voltages = 1,
438 .min_uV = 1800000,
439 },
440 .update_bank = 0x03,
441 .update_reg = 0x83,
442 .update_mask = 0x04,
443 .update_val_enable = 0x04,
444 },
445 [AB8500_LDO_ANA] = {
446 .desc = {
447 .name = "LDO-ANA",
448 .ops = &ab8500_regulator_fixed_ops,
449 .type = REGULATOR_VOLTAGE,
450 .id = AB8500_LDO_ANA,
451 .owner = THIS_MODULE,
452 .n_voltages = 1,
453 .min_uV = 1200000,
454 },
455 .update_bank = 0x04,
456 .update_reg = 0x06,
457 .update_mask = 0x0c,
458 .update_val_enable = 0x04,
459 },
460
461
462};
463
464struct ab8500_reg_init {
465 u8 bank;
466 u8 addr;
467 u8 mask;
468};
469
470#define REG_INIT(_id, _bank, _addr, _mask) \
471 [_id] = { \
472 .bank = _bank, \
473 .addr = _addr, \
474 .mask = _mask, \
475 }
476
477static struct ab8500_reg_init ab8500_reg_init[] = {
478
479
480
481
482
483 REG_INIT(AB8500_REGUREQUESTCTRL2, 0x03, 0x04, 0xfc),
484
485
486
487
488
489
490 REG_INIT(AB8500_REGUREQUESTCTRL3, 0x03, 0x05, 0xff),
491
492
493
494
495 REG_INIT(AB8500_REGUREQUESTCTRL4, 0x03, 0x06, 0x07),
496
497
498
499
500
501
502 REG_INIT(AB8500_REGUSYSCLKREQ1HPVALID1, 0x03, 0x07, 0xe8),
503
504
505
506
507
508 REG_INIT(AB8500_REGUSYSCLKREQ1HPVALID2, 0x03, 0x08, 0x70),
509
510
511
512
513
514
515 REG_INIT(AB8500_REGUHWHPREQ1VALID1, 0x03, 0x09, 0xe8),
516
517
518
519
520
521 REG_INIT(AB8500_REGUHWHPREQ1VALID2, 0x03, 0x0a, 0x07),
522
523
524
525
526
527
528 REG_INIT(AB8500_REGUHWHPREQ2VALID1, 0x03, 0x0b, 0xe8),
529
530
531
532
533
534 REG_INIT(AB8500_REGUHWHPREQ2VALID2, 0x03, 0x0c, 0x07),
535
536
537
538
539 REG_INIT(AB8500_REGUSWHPREQVALID1, 0x03, 0x0d, 0xa0),
540
541
542
543
544
545
546
547 REG_INIT(AB8500_REGUSWHPREQVALID2, 0x03, 0x0e, 0x1f),
548
549
550
551
552
553 REG_INIT(AB8500_REGUSYSCLKREQVALID1, 0x03, 0x0f, 0xfe),
554
555
556
557
558
559 REG_INIT(AB8500_REGUSYSCLKREQVALID2, 0x03, 0x10, 0xfe),
560
561
562
563
564
565
566
567 REG_INIT(AB8500_REGUMISC1, 0x03, 0x80, 0xfe),
568
569
570
571
572
573
574 REG_INIT(AB8500_VAUDIOSUPPLY, 0x03, 0x83, 0x1e),
575
576
577
578
579 REG_INIT(AB8500_REGUCTRL1VAMIC, 0x03, 0x84, 0x03),
580
581
582
583
584 REG_INIT(AB8500_VPLLVANAREGU, 0x04, 0x06, 0x0f),
585
586
587
588
589 REG_INIT(AB8500_VREFDDR, 0x04, 0x07, 0x03),
590
591
592
593
594
595
596
597 REG_INIT(AB8500_EXTSUPPLYREGU, 0x04, 0x08, 0xff),
598
599
600
601
602 REG_INIT(AB8500_VAUX12REGU, 0x04, 0x09, 0x0f),
603
604
605
606 REG_INIT(AB8500_VRF1VAUX3REGU, 0x04, 0x0a, 0x03),
607
608
609
610 REG_INIT(AB8500_VSMPS1SEL1, 0x04, 0x13, 0x3f),
611
612
613
614 REG_INIT(AB8500_VAUX1SEL, 0x04, 0x1f, 0x0f),
615
616
617
618 REG_INIT(AB8500_VAUX2SEL, 0x04, 0x20, 0x0f),
619
620
621
622 REG_INIT(AB8500_VRF1VAUX3SEL, 0x04, 0x21, 0x07),
623
624
625
626 REG_INIT(AB8500_REGUCTRL2SPARE, 0x04, 0x22, 0x01),
627
628
629
630
631
632
633
634
635 REG_INIT(AB8500_REGUCTRLDISCH, 0x04, 0x43, 0xfc),
636
637
638
639
640
641 REG_INIT(AB8500_REGUCTRLDISCH2, 0x04, 0x44, 0x16),
642};
643
644static int
645ab8500_regulator_init_registers(struct platform_device *pdev, int id, int value)
646{
647 int err;
648
649 if (value & ~ab8500_reg_init[id].mask) {
650 dev_err(&pdev->dev,
651 "Configuration error: value outside mask.\n");
652 return -EINVAL;
653 }
654
655 err = abx500_mask_and_set_register_interruptible(
656 &pdev->dev,
657 ab8500_reg_init[id].bank,
658 ab8500_reg_init[id].addr,
659 ab8500_reg_init[id].mask,
660 value);
661 if (err < 0) {
662 dev_err(&pdev->dev,
663 "Failed to initialize 0x%02x, 0x%02x.\n",
664 ab8500_reg_init[id].bank,
665 ab8500_reg_init[id].addr);
666 return err;
667 }
668
669 dev_vdbg(&pdev->dev,
670 "init: 0x%02x, 0x%02x, 0x%02x, 0x%02x\n",
671 ab8500_reg_init[id].bank,
672 ab8500_reg_init[id].addr,
673 ab8500_reg_init[id].mask,
674 value);
675
676 return 0;
677}
678
679static int ab8500_regulator_register(struct platform_device *pdev,
680 struct regulator_init_data *init_data,
681 int id,
682 struct device_node *np)
683{
684 struct ab8500_regulator_info *info = NULL;
685 struct regulator_config config = { };
686 int err;
687
688
689 info = &ab8500_regulator_info[id];
690 info->dev = &pdev->dev;
691
692 config.dev = &pdev->dev;
693 config.init_data = init_data;
694 config.driver_data = info;
695 config.of_node = np;
696
697
698 if (abx500_get_chip_id(info->dev) < 0x20) {
699 if (info->desc.id == AB8500_LDO_AUX3) {
700 info->desc.n_voltages =
701 ARRAY_SIZE(ldo_vauxn_voltages);
702 info->desc.volt_table = ldo_vauxn_voltages;
703 info->voltage_mask = 0xf;
704 }
705 }
706
707
708 info->regulator = regulator_register(&info->desc, &config);
709 if (IS_ERR(info->regulator)) {
710 err = PTR_ERR(info->regulator);
711 dev_err(&pdev->dev, "failed to register regulator %s\n",
712 info->desc.name);
713
714 while (--id >= 0) {
715 info = &ab8500_regulator_info[id];
716 regulator_unregister(info->regulator);
717 }
718 return err;
719 }
720
721 return 0;
722}
723
724static struct of_regulator_match ab8500_regulator_matches[] = {
725 { .name = "ab8500_ldo_aux1", .driver_data = (void *) AB8500_LDO_AUX1, },
726 { .name = "ab8500_ldo_aux2", .driver_data = (void *) AB8500_LDO_AUX2, },
727 { .name = "ab8500_ldo_aux3", .driver_data = (void *) AB8500_LDO_AUX3, },
728 { .name = "ab8500_ldo_intcore", .driver_data = (void *) AB8500_LDO_INTCORE, },
729 { .name = "ab8500_ldo_tvout", .driver_data = (void *) AB8500_LDO_TVOUT, },
730 { .name = "ab8500_ldo_usb", .driver_data = (void *) AB8500_LDO_USB, },
731 { .name = "ab8500_ldo_audio", .driver_data = (void *) AB8500_LDO_AUDIO, },
732 { .name = "ab8500_ldo_anamic1", .driver_data = (void *) AB8500_LDO_ANAMIC1, },
733 { .name = "ab8500_ldo_amamic2", .driver_data = (void *) AB8500_LDO_ANAMIC2, },
734 { .name = "ab8500_ldo_dmic", .driver_data = (void *) AB8500_LDO_DMIC, },
735 { .name = "ab8500_ldo_ana", .driver_data = (void *) AB8500_LDO_ANA, },
736};
737
738static int
739ab8500_regulator_of_probe(struct platform_device *pdev, struct device_node *np)
740{
741 int err, i;
742
743 for (i = 0; i < ARRAY_SIZE(ab8500_regulator_info); i++) {
744 err = ab8500_regulator_register(
745 pdev, ab8500_regulator_matches[i].init_data,
746 i, ab8500_regulator_matches[i].of_node);
747 if (err)
748 return err;
749 }
750
751 return 0;
752}
753
754static int ab8500_regulator_probe(struct platform_device *pdev)
755{
756 struct ab8500 *ab8500 = dev_get_drvdata(pdev->dev.parent);
757 struct ab8500_platform_data *pdata;
758 struct device_node *np = pdev->dev.of_node;
759 int i, err;
760
761 if (np) {
762 err = of_regulator_match(&pdev->dev, np,
763 ab8500_regulator_matches,
764 ARRAY_SIZE(ab8500_regulator_matches));
765 if (err < 0) {
766 dev_err(&pdev->dev,
767 "Error parsing regulator init data: %d\n", err);
768 return err;
769 }
770
771 err = ab8500_regulator_of_probe(pdev, np);
772 return err;
773 }
774
775 if (!ab8500) {
776 dev_err(&pdev->dev, "null mfd parent\n");
777 return -EINVAL;
778 }
779 pdata = dev_get_platdata(ab8500->dev);
780 if (!pdata) {
781 dev_err(&pdev->dev, "null pdata\n");
782 return -EINVAL;
783 }
784
785
786 if (pdata->num_regulator != ARRAY_SIZE(ab8500_regulator_info)) {
787 dev_err(&pdev->dev, "Configuration error: size mismatch.\n");
788 return -EINVAL;
789 }
790
791
792 for (i = 0; i < pdata->num_regulator_reg_init; i++) {
793 int id, value;
794
795 id = pdata->regulator_reg_init[i].id;
796 value = pdata->regulator_reg_init[i].value;
797
798
799 if (id >= AB8500_NUM_REGULATOR_REGISTERS) {
800 dev_err(&pdev->dev,
801 "Configuration error: id outside range.\n");
802 return -EINVAL;
803 }
804
805 err = ab8500_regulator_init_registers(pdev, id, value);
806 if (err < 0)
807 return err;
808 }
809
810
811 for (i = 0; i < ARRAY_SIZE(ab8500_regulator_info); i++) {
812 err = ab8500_regulator_register(pdev, &pdata->regulator[i], i, NULL);
813 if (err < 0)
814 return err;
815 }
816
817 return 0;
818}
819
820static int ab8500_regulator_remove(struct platform_device *pdev)
821{
822 int i;
823
824 for (i = 0; i < ARRAY_SIZE(ab8500_regulator_info); i++) {
825 struct ab8500_regulator_info *info = NULL;
826 info = &ab8500_regulator_info[i];
827
828 dev_vdbg(rdev_get_dev(info->regulator),
829 "%s-remove\n", info->desc.name);
830
831 regulator_unregister(info->regulator);
832 }
833
834 return 0;
835}
836
837static struct platform_driver ab8500_regulator_driver = {
838 .probe = ab8500_regulator_probe,
839 .remove = ab8500_regulator_remove,
840 .driver = {
841 .name = "ab8500-regulator",
842 .owner = THIS_MODULE,
843 },
844};
845
846static int __init ab8500_regulator_init(void)
847{
848 int ret;
849
850 ret = platform_driver_register(&ab8500_regulator_driver);
851 if (ret != 0)
852 pr_err("Failed to register ab8500 regulator: %d\n", ret);
853
854 return ret;
855}
856subsys_initcall(ab8500_regulator_init);
857
858static void __exit ab8500_regulator_exit(void)
859{
860 platform_driver_unregister(&ab8500_regulator_driver);
861}
862module_exit(ab8500_regulator_exit);
863
864MODULE_LICENSE("GPL v2");
865MODULE_AUTHOR("Sundar Iyer <sundar.iyer@stericsson.com>");
866MODULE_DESCRIPTION("Regulator Driver for ST-Ericsson AB8500 Mixed-Sig PMIC");
867MODULE_ALIAS("platform:ab8500-regulator");
868
