regulator: core: support of supply name through desc
[linux-2.6.git] / drivers / regulator / ab8500.c
1 /*
2  * Copyright (C) ST-Ericsson SA 2010
3  *
4  * License Terms: GNU General Public License v2
5  *
6  * Authors: Sundar Iyer <sundar.iyer@stericsson.com> for ST-Ericsson
7  *          Bengt Jonsson <bengt.g.jonsson@stericsson.com> for ST-Ericsson
8  *
9  * AB8500 peripheral regulators
10  *
11  * AB8500 supports the following regulators:
12  *   VAUX1/2/3, VINTCORE, VTVOUT, VUSB, VAUDIO, VAMIC1/2, VDMIC, VANA
13  */
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/regulator/driver.h>
22 #include <linux/regulator/machine.h>
23 #include <linux/regulator/ab8500.h>
24
25 /**
26  * struct ab8500_regulator_info - ab8500 regulator information
27  * @dev: device pointer
28  * @desc: regulator description
29  * @regulator_dev: regulator device
30  * @max_uV: maximum voltage (for variable voltage supplies)
31  * @min_uV: minimum voltage (for variable voltage supplies)
32  * @fixed_uV: typical voltage (for fixed voltage supplies)
33  * @update_bank: bank to control on/off
34  * @update_reg: register to control on/off
35  * @update_mask: mask to enable/disable regulator
36  * @update_val_enable: bits to enable the regulator in normal (high power) mode
37  * @voltage_bank: bank to control regulator voltage
38  * @voltage_reg: register to control regulator voltage
39  * @voltage_mask: mask to control regulator voltage
40  * @voltages: supported voltage table
41  * @voltages_len: number of supported voltages for the regulator
42  * @delay: startup/set voltage delay in us
43  */
44 struct ab8500_regulator_info {
45         struct device           *dev;
46         struct regulator_desc   desc;
47         struct regulator_dev    *regulator;
48         int max_uV;
49         int min_uV;
50         int fixed_uV;
51         u8 update_bank;
52         u8 update_reg;
53         u8 update_mask;
54         u8 update_val_enable;
55         u8 voltage_bank;
56         u8 voltage_reg;
57         u8 voltage_mask;
58         int const *voltages;
59         int voltages_len;
60         unsigned int delay;
61 };
62
63 /* voltage tables for the vauxn/vintcore supplies */
64 static const int ldo_vauxn_voltages[] = {
65         1100000,
66         1200000,
67         1300000,
68         1400000,
69         1500000,
70         1800000,
71         1850000,
72         1900000,
73         2500000,
74         2650000,
75         2700000,
76         2750000,
77         2800000,
78         2900000,
79         3000000,
80         3300000,
81 };
82
83 static const int ldo_vaux3_voltages[] = {
84         1200000,
85         1500000,
86         1800000,
87         2100000,
88         2500000,
89         2750000,
90         2790000,
91         2910000,
92 };
93
94 static const int ldo_vintcore_voltages[] = {
95         1200000,
96         1225000,
97         1250000,
98         1275000,
99         1300000,
100         1325000,
101         1350000,
102 };
103
104 static int ab8500_regulator_enable(struct regulator_dev *rdev)
105 {
106         int ret;
107         struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
108
109         if (info == NULL) {
110                 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
111                 return -EINVAL;
112         }
113
114         ret = abx500_mask_and_set_register_interruptible(info->dev,
115                 info->update_bank, info->update_reg,
116                 info->update_mask, info->update_val_enable);
117         if (ret < 0)
118                 dev_err(rdev_get_dev(rdev),
119                         "couldn't set enable bits for regulator\n");
120
121         dev_vdbg(rdev_get_dev(rdev),
122                 "%s-enable (bank, reg, mask, value): 0x%x, 0x%x, 0x%x, 0x%x\n",
123                 info->desc.name, info->update_bank, info->update_reg,
124                 info->update_mask, info->update_val_enable);
125
126         return ret;
127 }
128
129 static int ab8500_regulator_disable(struct regulator_dev *rdev)
130 {
131         int ret;
132         struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
133
134         if (info == NULL) {
135                 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
136                 return -EINVAL;
137         }
138
139         ret = abx500_mask_and_set_register_interruptible(info->dev,
140                 info->update_bank, info->update_reg,
141                 info->update_mask, 0x0);
142         if (ret < 0)
143                 dev_err(rdev_get_dev(rdev),
144                         "couldn't set disable bits for regulator\n");
145
146         dev_vdbg(rdev_get_dev(rdev),
147                 "%s-disable (bank, reg, mask, value): 0x%x, 0x%x, 0x%x, 0x%x\n",
148                 info->desc.name, info->update_bank, info->update_reg,
149                 info->update_mask, 0x0);
150
151         return ret;
152 }
153
154 static int ab8500_regulator_is_enabled(struct regulator_dev *rdev)
155 {
156         int ret;
157         struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
158         u8 regval;
159
160         if (info == NULL) {
161                 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
162                 return -EINVAL;
163         }
164
165         ret = abx500_get_register_interruptible(info->dev,
166                 info->update_bank, info->update_reg, &regval);
167         if (ret < 0) {
168                 dev_err(rdev_get_dev(rdev),
169                         "couldn't read 0x%x register\n", info->update_reg);
170                 return ret;
171         }
172
173         dev_vdbg(rdev_get_dev(rdev),
174                 "%s-is_enabled (bank, reg, mask, value): 0x%x, 0x%x, 0x%x,"
175                 " 0x%x\n",
176                 info->desc.name, info->update_bank, info->update_reg,
177                 info->update_mask, regval);
178
179         if (regval & info->update_mask)
180                 return true;
181         else
182                 return false;
183 }
184
185 static int ab8500_list_voltage(struct regulator_dev *rdev, unsigned selector)
186 {
187         struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
188
189         if (info == NULL) {
190                 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
191                 return -EINVAL;
192         }
193
194         /* return the uV for the fixed regulators */
195         if (info->fixed_uV)
196                 return info->fixed_uV;
197
198         if (selector >= info->voltages_len)
199                 return -EINVAL;
200
201         return info->voltages[selector];
202 }
203
204 static int ab8500_regulator_get_voltage_sel(struct regulator_dev *rdev)
205 {
206         int ret, val;
207         struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
208         u8 regval;
209
210         if (info == NULL) {
211                 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
212                 return -EINVAL;
213         }
214
215         ret = abx500_get_register_interruptible(info->dev,
216                         info->voltage_bank, info->voltage_reg, &regval);
217         if (ret < 0) {
218                 dev_err(rdev_get_dev(rdev),
219                         "couldn't read voltage reg for regulator\n");
220                 return ret;
221         }
222
223         dev_vdbg(rdev_get_dev(rdev),
224                 "%s-get_voltage (bank, reg, mask, value): 0x%x, 0x%x, 0x%x,"
225                 " 0x%x\n",
226                 info->desc.name, info->voltage_bank, info->voltage_reg,
227                 info->voltage_mask, regval);
228
229         /* vintcore has a different layout */
230         val = regval & info->voltage_mask;
231         if (info->desc.id == AB8500_LDO_INTCORE)
232                 return val >> 0x3;
233         else
234                 return val;
235 }
236
237 static int ab8500_get_best_voltage_index(struct regulator_dev *rdev,
238                 int min_uV, int max_uV)
239 {
240         struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
241         int i;
242
243         /* check the supported voltage */
244         for (i = 0; i < info->voltages_len; i++) {
245                 if ((info->voltages[i] >= min_uV) &&
246                     (info->voltages[i] <= max_uV))
247                         return i;
248         }
249
250         return -EINVAL;
251 }
252
253 static int ab8500_regulator_set_voltage(struct regulator_dev *rdev,
254                                         int min_uV, int max_uV,
255                                         unsigned *selector)
256 {
257         int ret;
258         struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
259         u8 regval;
260
261         if (info == NULL) {
262                 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
263                 return -EINVAL;
264         }
265
266         /* get the appropriate voltages within the range */
267         ret = ab8500_get_best_voltage_index(rdev, min_uV, max_uV);
268         if (ret < 0) {
269                 dev_err(rdev_get_dev(rdev),
270                                 "couldn't get best voltage for regulator\n");
271                 return ret;
272         }
273
274         *selector = ret;
275
276         /* set the registers for the request */
277         regval = (u8)ret;
278         ret = abx500_mask_and_set_register_interruptible(info->dev,
279                         info->voltage_bank, info->voltage_reg,
280                         info->voltage_mask, regval);
281         if (ret < 0)
282                 dev_err(rdev_get_dev(rdev),
283                 "couldn't set voltage reg for regulator\n");
284
285         dev_vdbg(rdev_get_dev(rdev),
286                 "%s-set_voltage (bank, reg, mask, value): 0x%x, 0x%x, 0x%x,"
287                 " 0x%x\n",
288                 info->desc.name, info->voltage_bank, info->voltage_reg,
289                 info->voltage_mask, regval);
290
291         return ret;
292 }
293
294 static int ab8500_regulator_enable_time(struct regulator_dev *rdev)
295 {
296         struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
297
298         return info->delay;
299 }
300
301 static int ab8500_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
302                                              unsigned int old_sel,
303                                              unsigned int new_sel)
304 {
305         struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
306         int ret;
307
308         /* If the regulator isn't on, it won't take time here */
309         ret = ab8500_regulator_is_enabled(rdev);
310         if (ret < 0)
311                 return ret;
312         if (!ret)
313                 return 0;
314         return info->delay;
315 }
316
317 static struct regulator_ops ab8500_regulator_ops = {
318         .enable         = ab8500_regulator_enable,
319         .disable        = ab8500_regulator_disable,
320         .is_enabled     = ab8500_regulator_is_enabled,
321         .get_voltage_sel = ab8500_regulator_get_voltage_sel,
322         .set_voltage    = ab8500_regulator_set_voltage,
323         .list_voltage   = ab8500_list_voltage,
324         .enable_time    = ab8500_regulator_enable_time,
325         .set_voltage_time_sel = ab8500_regulator_set_voltage_time_sel,
326 };
327
328 static int ab8500_fixed_get_voltage(struct regulator_dev *rdev)
329 {
330         struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
331
332         if (info == NULL) {
333                 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
334                 return -EINVAL;
335         }
336
337         return info->fixed_uV;
338 }
339
340 static struct regulator_ops ab8500_regulator_fixed_ops = {
341         .enable         = ab8500_regulator_enable,
342         .disable        = ab8500_regulator_disable,
343         .is_enabled     = ab8500_regulator_is_enabled,
344         .get_voltage    = ab8500_fixed_get_voltage,
345         .list_voltage   = ab8500_list_voltage,
346         .enable_time    = ab8500_regulator_enable_time,
347         .set_voltage_time_sel = ab8500_regulator_set_voltage_time_sel,
348 };
349
350 static struct ab8500_regulator_info
351                 ab8500_regulator_info[AB8500_NUM_REGULATORS] = {
352         /*
353          * Variable Voltage Regulators
354          *   name, min mV, max mV,
355          *   update bank, reg, mask, enable val
356          *   volt bank, reg, mask, table, table length
357          */
358         [AB8500_LDO_AUX1] = {
359                 .desc = {
360                         .name           = "LDO-AUX1",
361                         .ops            = &ab8500_regulator_ops,
362                         .type           = REGULATOR_VOLTAGE,
363                         .id             = AB8500_LDO_AUX1,
364                         .owner          = THIS_MODULE,
365                         .n_voltages     = ARRAY_SIZE(ldo_vauxn_voltages),
366                 },
367                 .min_uV                 = 1100000,
368                 .max_uV                 = 3300000,
369                 .update_bank            = 0x04,
370                 .update_reg             = 0x09,
371                 .update_mask            = 0x03,
372                 .update_val_enable      = 0x01,
373                 .voltage_bank           = 0x04,
374                 .voltage_reg            = 0x1f,
375                 .voltage_mask           = 0x0f,
376                 .voltages               = ldo_vauxn_voltages,
377                 .voltages_len           = ARRAY_SIZE(ldo_vauxn_voltages),
378         },
379         [AB8500_LDO_AUX2] = {
380                 .desc = {
381                         .name           = "LDO-AUX2",
382                         .ops            = &ab8500_regulator_ops,
383                         .type           = REGULATOR_VOLTAGE,
384                         .id             = AB8500_LDO_AUX2,
385                         .owner          = THIS_MODULE,
386                         .n_voltages     = ARRAY_SIZE(ldo_vauxn_voltages),
387                 },
388                 .min_uV                 = 1100000,
389                 .max_uV                 = 3300000,
390                 .update_bank            = 0x04,
391                 .update_reg             = 0x09,
392                 .update_mask            = 0x0c,
393                 .update_val_enable      = 0x04,
394                 .voltage_bank           = 0x04,
395                 .voltage_reg            = 0x20,
396                 .voltage_mask           = 0x0f,
397                 .voltages               = ldo_vauxn_voltages,
398                 .voltages_len           = ARRAY_SIZE(ldo_vauxn_voltages),
399         },
400         [AB8500_LDO_AUX3] = {
401                 .desc = {
402                         .name           = "LDO-AUX3",
403                         .ops            = &ab8500_regulator_ops,
404                         .type           = REGULATOR_VOLTAGE,
405                         .id             = AB8500_LDO_AUX3,
406                         .owner          = THIS_MODULE,
407                         .n_voltages     = ARRAY_SIZE(ldo_vaux3_voltages),
408                 },
409                 .min_uV                 = 1100000,
410                 .max_uV                 = 3300000,
411                 .update_bank            = 0x04,
412                 .update_reg             = 0x0a,
413                 .update_mask            = 0x03,
414                 .update_val_enable      = 0x01,
415                 .voltage_bank           = 0x04,
416                 .voltage_reg            = 0x21,
417                 .voltage_mask           = 0x07,
418                 .voltages               = ldo_vaux3_voltages,
419                 .voltages_len           = ARRAY_SIZE(ldo_vaux3_voltages),
420         },
421         [AB8500_LDO_INTCORE] = {
422                 .desc = {
423                         .name           = "LDO-INTCORE",
424                         .ops            = &ab8500_regulator_ops,
425                         .type           = REGULATOR_VOLTAGE,
426                         .id             = AB8500_LDO_INTCORE,
427                         .owner          = THIS_MODULE,
428                         .n_voltages     = ARRAY_SIZE(ldo_vintcore_voltages),
429                 },
430                 .min_uV                 = 1100000,
431                 .max_uV                 = 3300000,
432                 .update_bank            = 0x03,
433                 .update_reg             = 0x80,
434                 .update_mask            = 0x44,
435                 .update_val_enable      = 0x04,
436                 .voltage_bank           = 0x03,
437                 .voltage_reg            = 0x80,
438                 .voltage_mask           = 0x38,
439                 .voltages               = ldo_vintcore_voltages,
440                 .voltages_len           = ARRAY_SIZE(ldo_vintcore_voltages),
441         },
442
443         /*
444          * Fixed Voltage Regulators
445          *   name, fixed mV,
446          *   update bank, reg, mask, enable val
447          */
448         [AB8500_LDO_TVOUT] = {
449                 .desc = {
450                         .name           = "LDO-TVOUT",
451                         .ops            = &ab8500_regulator_fixed_ops,
452                         .type           = REGULATOR_VOLTAGE,
453                         .id             = AB8500_LDO_TVOUT,
454                         .owner          = THIS_MODULE,
455                         .n_voltages     = 1,
456                 },
457                 .delay                  = 10000,
458                 .fixed_uV               = 2000000,
459                 .update_bank            = 0x03,
460                 .update_reg             = 0x80,
461                 .update_mask            = 0x82,
462                 .update_val_enable      = 0x02,
463         },
464         [AB8500_LDO_USB] = {
465                 .desc = {
466                         .name           = "LDO-USB",
467                         .ops            = &ab8500_regulator_fixed_ops,
468                         .type           = REGULATOR_VOLTAGE,
469                         .id             = AB8500_LDO_USB,
470                         .owner          = THIS_MODULE,
471                         .n_voltages     = 1,
472                 },
473                 .fixed_uV               = 3300000,
474                 .update_bank            = 0x03,
475                 .update_reg             = 0x82,
476                 .update_mask            = 0x03,
477                 .update_val_enable      = 0x01,
478         },
479         [AB8500_LDO_AUDIO] = {
480                 .desc = {
481                         .name           = "LDO-AUDIO",
482                         .ops            = &ab8500_regulator_fixed_ops,
483                         .type           = REGULATOR_VOLTAGE,
484                         .id             = AB8500_LDO_AUDIO,
485                         .owner          = THIS_MODULE,
486                         .n_voltages     = 1,
487                 },
488                 .fixed_uV               = 2000000,
489                 .update_bank            = 0x03,
490                 .update_reg             = 0x83,
491                 .update_mask            = 0x02,
492                 .update_val_enable      = 0x02,
493         },
494         [AB8500_LDO_ANAMIC1] = {
495                 .desc = {
496                         .name           = "LDO-ANAMIC1",
497                         .ops            = &ab8500_regulator_fixed_ops,
498                         .type           = REGULATOR_VOLTAGE,
499                         .id             = AB8500_LDO_ANAMIC1,
500                         .owner          = THIS_MODULE,
501                         .n_voltages     = 1,
502                 },
503                 .fixed_uV               = 2050000,
504                 .update_bank            = 0x03,
505                 .update_reg             = 0x83,
506                 .update_mask            = 0x08,
507                 .update_val_enable      = 0x08,
508         },
509         [AB8500_LDO_ANAMIC2] = {
510                 .desc = {
511                         .name           = "LDO-ANAMIC2",
512                         .ops            = &ab8500_regulator_fixed_ops,
513                         .type           = REGULATOR_VOLTAGE,
514                         .id             = AB8500_LDO_ANAMIC2,
515                         .owner          = THIS_MODULE,
516                         .n_voltages     = 1,
517                 },
518                 .fixed_uV               = 2050000,
519                 .update_bank            = 0x03,
520                 .update_reg             = 0x83,
521                 .update_mask            = 0x10,
522                 .update_val_enable      = 0x10,
523         },
524         [AB8500_LDO_DMIC] = {
525                 .desc = {
526                         .name           = "LDO-DMIC",
527                         .ops            = &ab8500_regulator_fixed_ops,
528                         .type           = REGULATOR_VOLTAGE,
529                         .id             = AB8500_LDO_DMIC,
530                         .owner          = THIS_MODULE,
531                         .n_voltages     = 1,
532                 },
533                 .fixed_uV               = 1800000,
534                 .update_bank            = 0x03,
535                 .update_reg             = 0x83,
536                 .update_mask            = 0x04,
537                 .update_val_enable      = 0x04,
538         },
539         [AB8500_LDO_ANA] = {
540                 .desc = {
541                         .name           = "LDO-ANA",
542                         .ops            = &ab8500_regulator_fixed_ops,
543                         .type           = REGULATOR_VOLTAGE,
544                         .id             = AB8500_LDO_ANA,
545                         .owner          = THIS_MODULE,
546                         .n_voltages     = 1,
547                 },
548                 .fixed_uV               = 1200000,
549                 .update_bank            = 0x04,
550                 .update_reg             = 0x06,
551                 .update_mask            = 0x0c,
552                 .update_val_enable      = 0x04,
553         },
554
555
556 };
557
558 struct ab8500_reg_init {
559         u8 bank;
560         u8 addr;
561         u8 mask;
562 };
563
564 #define REG_INIT(_id, _bank, _addr, _mask)      \
565         [_id] = {                               \
566                 .bank = _bank,                  \
567                 .addr = _addr,                  \
568                 .mask = _mask,                  \
569         }
570
571 static struct ab8500_reg_init ab8500_reg_init[] = {
572         /*
573          * 0x30, VanaRequestCtrl
574          * 0x0C, VpllRequestCtrl
575          * 0xc0, VextSupply1RequestCtrl
576          */
577         REG_INIT(AB8500_REGUREQUESTCTRL2,       0x03, 0x04, 0xfc),
578         /*
579          * 0x03, VextSupply2RequestCtrl
580          * 0x0c, VextSupply3RequestCtrl
581          * 0x30, Vaux1RequestCtrl
582          * 0xc0, Vaux2RequestCtrl
583          */
584         REG_INIT(AB8500_REGUREQUESTCTRL3,       0x03, 0x05, 0xff),
585         /*
586          * 0x03, Vaux3RequestCtrl
587          * 0x04, SwHPReq
588          */
589         REG_INIT(AB8500_REGUREQUESTCTRL4,       0x03, 0x06, 0x07),
590         /*
591          * 0x08, VanaSysClkReq1HPValid
592          * 0x20, Vaux1SysClkReq1HPValid
593          * 0x40, Vaux2SysClkReq1HPValid
594          * 0x80, Vaux3SysClkReq1HPValid
595          */
596         REG_INIT(AB8500_REGUSYSCLKREQ1HPVALID1, 0x03, 0x07, 0xe8),
597         /*
598          * 0x10, VextSupply1SysClkReq1HPValid
599          * 0x20, VextSupply2SysClkReq1HPValid
600          * 0x40, VextSupply3SysClkReq1HPValid
601          */
602         REG_INIT(AB8500_REGUSYSCLKREQ1HPVALID2, 0x03, 0x08, 0x70),
603         /*
604          * 0x08, VanaHwHPReq1Valid
605          * 0x20, Vaux1HwHPReq1Valid
606          * 0x40, Vaux2HwHPReq1Valid
607          * 0x80, Vaux3HwHPReq1Valid
608          */
609         REG_INIT(AB8500_REGUHWHPREQ1VALID1,     0x03, 0x09, 0xe8),
610         /*
611          * 0x01, VextSupply1HwHPReq1Valid
612          * 0x02, VextSupply2HwHPReq1Valid
613          * 0x04, VextSupply3HwHPReq1Valid
614          */
615         REG_INIT(AB8500_REGUHWHPREQ1VALID2,     0x03, 0x0a, 0x07),
616         /*
617          * 0x08, VanaHwHPReq2Valid
618          * 0x20, Vaux1HwHPReq2Valid
619          * 0x40, Vaux2HwHPReq2Valid
620          * 0x80, Vaux3HwHPReq2Valid
621          */
622         REG_INIT(AB8500_REGUHWHPREQ2VALID1,     0x03, 0x0b, 0xe8),
623         /*
624          * 0x01, VextSupply1HwHPReq2Valid
625          * 0x02, VextSupply2HwHPReq2Valid
626          * 0x04, VextSupply3HwHPReq2Valid
627          */
628         REG_INIT(AB8500_REGUHWHPREQ2VALID2,     0x03, 0x0c, 0x07),
629         /*
630          * 0x20, VanaSwHPReqValid
631          * 0x80, Vaux1SwHPReqValid
632          */
633         REG_INIT(AB8500_REGUSWHPREQVALID1,      0x03, 0x0d, 0xa0),
634         /*
635          * 0x01, Vaux2SwHPReqValid
636          * 0x02, Vaux3SwHPReqValid
637          * 0x04, VextSupply1SwHPReqValid
638          * 0x08, VextSupply2SwHPReqValid
639          * 0x10, VextSupply3SwHPReqValid
640          */
641         REG_INIT(AB8500_REGUSWHPREQVALID2,      0x03, 0x0e, 0x1f),
642         /*
643          * 0x02, SysClkReq2Valid1
644          * ...
645          * 0x80, SysClkReq8Valid1
646          */
647         REG_INIT(AB8500_REGUSYSCLKREQVALID1,    0x03, 0x0f, 0xfe),
648         /*
649          * 0x02, SysClkReq2Valid2
650          * ...
651          * 0x80, SysClkReq8Valid2
652          */
653         REG_INIT(AB8500_REGUSYSCLKREQVALID2,    0x03, 0x10, 0xfe),
654         /*
655          * 0x02, VTVoutEna
656          * 0x04, Vintcore12Ena
657          * 0x38, Vintcore12Sel
658          * 0x40, Vintcore12LP
659          * 0x80, VTVoutLP
660          */
661         REG_INIT(AB8500_REGUMISC1,              0x03, 0x80, 0xfe),
662         /*
663          * 0x02, VaudioEna
664          * 0x04, VdmicEna
665          * 0x08, Vamic1Ena
666          * 0x10, Vamic2Ena
667          */
668         REG_INIT(AB8500_VAUDIOSUPPLY,           0x03, 0x83, 0x1e),
669         /*
670          * 0x01, Vamic1_dzout
671          * 0x02, Vamic2_dzout
672          */
673         REG_INIT(AB8500_REGUCTRL1VAMIC,         0x03, 0x84, 0x03),
674         /*
675          * 0x0c, VanaRegu
676          * 0x03, VpllRegu
677          */
678         REG_INIT(AB8500_VPLLVANAREGU,           0x04, 0x06, 0x0f),
679         /*
680          * 0x01, VrefDDREna
681          * 0x02, VrefDDRSleepMode
682          */
683         REG_INIT(AB8500_VREFDDR,                0x04, 0x07, 0x03),
684         /*
685          * 0x03, VextSupply1Regu
686          * 0x0c, VextSupply2Regu
687          * 0x30, VextSupply3Regu
688          * 0x40, ExtSupply2Bypass
689          * 0x80, ExtSupply3Bypass
690          */
691         REG_INIT(AB8500_EXTSUPPLYREGU,          0x04, 0x08, 0xff),
692         /*
693          * 0x03, Vaux1Regu
694          * 0x0c, Vaux2Regu
695          */
696         REG_INIT(AB8500_VAUX12REGU,             0x04, 0x09, 0x0f),
697         /*
698          * 0x03, Vaux3Regu
699          */
700         REG_INIT(AB8500_VRF1VAUX3REGU,          0x04, 0x0a, 0x03),
701         /*
702          * 0x3f, Vsmps1Sel1
703          */
704         REG_INIT(AB8500_VSMPS1SEL1,             0x04, 0x13, 0x3f),
705         /*
706          * 0x0f, Vaux1Sel
707          */
708         REG_INIT(AB8500_VAUX1SEL,               0x04, 0x1f, 0x0f),
709         /*
710          * 0x0f, Vaux2Sel
711          */
712         REG_INIT(AB8500_VAUX2SEL,               0x04, 0x20, 0x0f),
713         /*
714          * 0x07, Vaux3Sel
715          */
716         REG_INIT(AB8500_VRF1VAUX3SEL,           0x04, 0x21, 0x07),
717         /*
718          * 0x01, VextSupply12LP
719          */
720         REG_INIT(AB8500_REGUCTRL2SPARE,         0x04, 0x22, 0x01),
721         /*
722          * 0x04, Vaux1Disch
723          * 0x08, Vaux2Disch
724          * 0x10, Vaux3Disch
725          * 0x20, Vintcore12Disch
726          * 0x40, VTVoutDisch
727          * 0x80, VaudioDisch
728          */
729         REG_INIT(AB8500_REGUCTRLDISCH,          0x04, 0x43, 0xfc),
730         /*
731          * 0x02, VanaDisch
732          * 0x04, VdmicPullDownEna
733          * 0x10, VdmicDisch
734          */
735         REG_INIT(AB8500_REGUCTRLDISCH2,         0x04, 0x44, 0x16),
736 };
737
738 static __devinit int ab8500_regulator_probe(struct platform_device *pdev)
739 {
740         struct ab8500 *ab8500 = dev_get_drvdata(pdev->dev.parent);
741         struct ab8500_platform_data *pdata;
742         int i, err;
743
744         if (!ab8500) {
745                 dev_err(&pdev->dev, "null mfd parent\n");
746                 return -EINVAL;
747         }
748         pdata = dev_get_platdata(ab8500->dev);
749         if (!pdata) {
750                 dev_err(&pdev->dev, "null pdata\n");
751                 return -EINVAL;
752         }
753
754         /* make sure the platform data has the correct size */
755         if (pdata->num_regulator != ARRAY_SIZE(ab8500_regulator_info)) {
756                 dev_err(&pdev->dev, "Configuration error: size mismatch.\n");
757                 return -EINVAL;
758         }
759
760         /* initialize registers */
761         for (i = 0; i < pdata->num_regulator_reg_init; i++) {
762                 int id;
763                 u8 value;
764
765                 id = pdata->regulator_reg_init[i].id;
766                 value = pdata->regulator_reg_init[i].value;
767
768                 /* check for configuration errors */
769                 if (id >= AB8500_NUM_REGULATOR_REGISTERS) {
770                         dev_err(&pdev->dev,
771                                 "Configuration error: id outside range.\n");
772                         return -EINVAL;
773                 }
774                 if (value & ~ab8500_reg_init[id].mask) {
775                         dev_err(&pdev->dev,
776                                 "Configuration error: value outside mask.\n");
777                         return -EINVAL;
778                 }
779
780                 /* initialize register */
781                 err = abx500_mask_and_set_register_interruptible(&pdev->dev,
782                         ab8500_reg_init[id].bank,
783                         ab8500_reg_init[id].addr,
784                         ab8500_reg_init[id].mask,
785                         value);
786                 if (err < 0) {
787                         dev_err(&pdev->dev,
788                                 "Failed to initialize 0x%02x, 0x%02x.\n",
789                                 ab8500_reg_init[id].bank,
790                                 ab8500_reg_init[id].addr);
791                         return err;
792                 }
793                 dev_vdbg(&pdev->dev,
794                         "  init: 0x%02x, 0x%02x, 0x%02x, 0x%02x\n",
795                         ab8500_reg_init[id].bank,
796                         ab8500_reg_init[id].addr,
797                         ab8500_reg_init[id].mask,
798                         value);
799         }
800
801         /* register all regulators */
802         for (i = 0; i < ARRAY_SIZE(ab8500_regulator_info); i++) {
803                 struct ab8500_regulator_info *info = NULL;
804
805                 /* assign per-regulator data */
806                 info = &ab8500_regulator_info[i];
807                 info->dev = &pdev->dev;
808
809                 /* fix for hardware before ab8500v2.0 */
810                 if (abx500_get_chip_id(info->dev) < 0x20) {
811                         if (info->desc.id == AB8500_LDO_AUX3) {
812                                 info->desc.n_voltages =
813                                         ARRAY_SIZE(ldo_vauxn_voltages);
814                                 info->voltages = ldo_vauxn_voltages;
815                                 info->voltages_len =
816                                         ARRAY_SIZE(ldo_vauxn_voltages);
817                                 info->voltage_mask = 0xf;
818                         }
819                 }
820
821                 /* register regulator with framework */
822                 info->regulator = regulator_register(&info->desc, &pdev->dev,
823                                 &pdata->regulator[i], info, NULL);
824                 if (IS_ERR(info->regulator)) {
825                         err = PTR_ERR(info->regulator);
826                         dev_err(&pdev->dev, "failed to register regulator %s\n",
827                                         info->desc.name);
828                         /* when we fail, un-register all earlier regulators */
829                         while (--i >= 0) {
830                                 info = &ab8500_regulator_info[i];
831                                 regulator_unregister(info->regulator);
832                         }
833                         return err;
834                 }
835
836                 dev_vdbg(rdev_get_dev(info->regulator),
837                         "%s-probed\n", info->desc.name);
838         }
839
840         return 0;
841 }
842
843 static __devexit int ab8500_regulator_remove(struct platform_device *pdev)
844 {
845         int i;
846
847         for (i = 0; i < ARRAY_SIZE(ab8500_regulator_info); i++) {
848                 struct ab8500_regulator_info *info = NULL;
849                 info = &ab8500_regulator_info[i];
850
851                 dev_vdbg(rdev_get_dev(info->regulator),
852                         "%s-remove\n", info->desc.name);
853
854                 regulator_unregister(info->regulator);
855         }
856
857         return 0;
858 }
859
860 static struct platform_driver ab8500_regulator_driver = {
861         .probe = ab8500_regulator_probe,
862         .remove = __devexit_p(ab8500_regulator_remove),
863         .driver         = {
864                 .name   = "ab8500-regulator",
865                 .owner  = THIS_MODULE,
866         },
867 };
868
869 static int __init ab8500_regulator_init(void)
870 {
871         int ret;
872
873         ret = platform_driver_register(&ab8500_regulator_driver);
874         if (ret != 0)
875                 pr_err("Failed to register ab8500 regulator: %d\n", ret);
876
877         return ret;
878 }
879 subsys_initcall(ab8500_regulator_init);
880
881 static void __exit ab8500_regulator_exit(void)
882 {
883         platform_driver_unregister(&ab8500_regulator_driver);
884 }
885 module_exit(ab8500_regulator_exit);
886
887 MODULE_LICENSE("GPL v2");
888 MODULE_AUTHOR("Sundar Iyer <sundar.iyer@stericsson.com>");
889 MODULE_DESCRIPTION("Regulator Driver for ST-Ericsson AB8500 Mixed-Sig PMIC");
890 MODULE_ALIAS("platform:ab8500-regulator");