regulator: twl: Remove another unused variable warning
[linux-3.10.git] / drivers / regulator / twl-regulator.c
1 /*
2  * twl-regulator.c -- support regulators in twl4030/twl6030 family chips
3  *
4  * Copyright (C) 2008 David Brownell
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  */
11
12 #include <linux/module.h>
13 #include <linux/string.h>
14 #include <linux/slab.h>
15 #include <linux/init.h>
16 #include <linux/err.h>
17 #include <linux/platform_device.h>
18 #include <linux/of.h>
19 #include <linux/of_device.h>
20 #include <linux/regulator/driver.h>
21 #include <linux/regulator/machine.h>
22 #include <linux/regulator/of_regulator.h>
23 #include <linux/i2c/twl.h>
24
25
26 /*
27  * The TWL4030/TW5030/TPS659x0/TWL6030 family chips include power management, a
28  * USB OTG transceiver, an RTC, ADC, PWM, and lots more.  Some versions
29  * include an audio codec, battery charger, and more voltage regulators.
30  * These chips are often used in OMAP-based systems.
31  *
32  * This driver implements software-based resource control for various
33  * voltage regulators.  This is usually augmented with state machine
34  * based control.
35  */
36
37 struct twlreg_info {
38         /* start of regulator's PM_RECEIVER control register bank */
39         u8                      base;
40
41         /* twl resource ID, for resource control state machine */
42         u8                      id;
43
44         /* voltage in mV = table[VSEL]; table_len must be a power-of-two */
45         u8                      table_len;
46         const u16               *table;
47
48         /* State REMAP default configuration */
49         u8                      remap;
50
51         /* chip constraints on regulator behavior */
52         u16                     min_mV;
53         u16                     max_mV;
54
55         u8                      flags;
56
57         /* used by regulator core */
58         struct regulator_desc   desc;
59
60         /* chip specific features */
61         unsigned long           features;
62
63         /*
64          * optional override functions for voltage set/get
65          * these are currently only used for SMPS regulators
66          */
67         int                     (*get_voltage)(void *data);
68         int                     (*set_voltage)(void *data, int target_uV);
69
70         /* data passed from board for external get/set voltage */
71         void                    *data;
72 };
73
74
75 /* LDO control registers ... offset is from the base of its register bank.
76  * The first three registers of all power resource banks help hardware to
77  * manage the various resource groups.
78  */
79 /* Common offset in TWL4030/6030 */
80 #define VREG_GRP                0
81 /* TWL4030 register offsets */
82 #define VREG_TYPE               1
83 #define VREG_REMAP              2
84 #define VREG_DEDICATED          3       /* LDO control */
85 #define VREG_VOLTAGE_SMPS_4030  9
86 /* TWL6030 register offsets */
87 #define VREG_TRANS              1
88 #define VREG_STATE              2
89 #define VREG_VOLTAGE            3
90 #define VREG_VOLTAGE_SMPS       4
91 /* TWL6030 Misc register offsets */
92 #define VREG_BC_ALL             1
93 #define VREG_BC_REF             2
94 #define VREG_BC_PROC            3
95 #define VREG_BC_CLK_RST         4
96
97 /* TWL6030 LDO register values for CFG_STATE */
98 #define TWL6030_CFG_STATE_OFF   0x00
99 #define TWL6030_CFG_STATE_ON    0x01
100 #define TWL6030_CFG_STATE_OFF2  0x02
101 #define TWL6030_CFG_STATE_SLEEP 0x03
102 #define TWL6030_CFG_STATE_GRP_SHIFT     5
103 #define TWL6030_CFG_STATE_APP_SHIFT     2
104 #define TWL6030_CFG_STATE_APP_MASK      (0x03 << TWL6030_CFG_STATE_APP_SHIFT)
105 #define TWL6030_CFG_STATE_APP(v)        (((v) & TWL6030_CFG_STATE_APP_MASK) >>\
106                                                 TWL6030_CFG_STATE_APP_SHIFT)
107
108 /* Flags for SMPS Voltage reading */
109 #define SMPS_OFFSET_EN          BIT(0)
110 #define SMPS_EXTENDED_EN        BIT(1)
111
112 /* twl6025 SMPS EPROM values */
113 #define TWL6030_SMPS_OFFSET             0xB0
114 #define TWL6030_SMPS_MULT               0xB3
115 #define SMPS_MULTOFFSET_SMPS4   BIT(0)
116 #define SMPS_MULTOFFSET_VIO     BIT(1)
117 #define SMPS_MULTOFFSET_SMPS3   BIT(6)
118
119 static inline int
120 twlreg_read(struct twlreg_info *info, unsigned slave_subgp, unsigned offset)
121 {
122         u8 value;
123         int status;
124
125         status = twl_i2c_read_u8(slave_subgp,
126                         &value, info->base + offset);
127         return (status < 0) ? status : value;
128 }
129
130 static inline int
131 twlreg_write(struct twlreg_info *info, unsigned slave_subgp, unsigned offset,
132                                                  u8 value)
133 {
134         return twl_i2c_write_u8(slave_subgp,
135                         value, info->base + offset);
136 }
137
138 /*----------------------------------------------------------------------*/
139
140 /* generic power resource operations, which work on all regulators */
141
142 static int twlreg_grp(struct regulator_dev *rdev)
143 {
144         return twlreg_read(rdev_get_drvdata(rdev), TWL_MODULE_PM_RECEIVER,
145                                                                  VREG_GRP);
146 }
147
148 /*
149  * Enable/disable regulators by joining/leaving the P1 (processor) group.
150  * We assume nobody else is updating the DEV_GRP registers.
151  */
152 /* definition for 4030 family */
153 #define P3_GRP_4030     BIT(7)          /* "peripherals" */
154 #define P2_GRP_4030     BIT(6)          /* secondary processor, modem, etc */
155 #define P1_GRP_4030     BIT(5)          /* CPU/Linux */
156 /* definition for 6030 family */
157 #define P3_GRP_6030     BIT(2)          /* secondary processor, modem, etc */
158 #define P2_GRP_6030     BIT(1)          /* "peripherals" */
159 #define P1_GRP_6030     BIT(0)          /* CPU/Linux */
160
161 static int twl4030reg_is_enabled(struct regulator_dev *rdev)
162 {
163         int     state = twlreg_grp(rdev);
164
165         if (state < 0)
166                 return state;
167
168         return state & P1_GRP_4030;
169 }
170
171 static int twl6030reg_is_enabled(struct regulator_dev *rdev)
172 {
173         struct twlreg_info      *info = rdev_get_drvdata(rdev);
174         int                     grp = 0, val;
175
176         if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS))) {
177                 grp = twlreg_grp(rdev);
178                 if (grp < 0)
179                         return grp;
180                 grp &= P1_GRP_6030;
181         } else {
182                 grp = 1;
183         }
184
185         val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
186         val = TWL6030_CFG_STATE_APP(val);
187
188         return grp && (val == TWL6030_CFG_STATE_ON);
189 }
190
191 static int twl4030reg_enable(struct regulator_dev *rdev)
192 {
193         struct twlreg_info      *info = rdev_get_drvdata(rdev);
194         int                     grp;
195         int                     ret;
196
197         grp = twlreg_grp(rdev);
198         if (grp < 0)
199                 return grp;
200
201         grp |= P1_GRP_4030;
202
203         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp);
204
205         return ret;
206 }
207
208 static int twl6030reg_enable(struct regulator_dev *rdev)
209 {
210         struct twlreg_info      *info = rdev_get_drvdata(rdev);
211         int                     grp = 0;
212         int                     ret;
213
214         if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS)))
215                 grp = twlreg_grp(rdev);
216         if (grp < 0)
217                 return grp;
218
219         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
220                         grp << TWL6030_CFG_STATE_GRP_SHIFT |
221                         TWL6030_CFG_STATE_ON);
222         return ret;
223 }
224
225 static int twl4030reg_disable(struct regulator_dev *rdev)
226 {
227         struct twlreg_info      *info = rdev_get_drvdata(rdev);
228         int                     grp;
229         int                     ret;
230
231         grp = twlreg_grp(rdev);
232         if (grp < 0)
233                 return grp;
234
235         grp &= ~(P1_GRP_4030 | P2_GRP_4030 | P3_GRP_4030);
236
237         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp);
238
239         return ret;
240 }
241
242 static int twl6030reg_disable(struct regulator_dev *rdev)
243 {
244         struct twlreg_info      *info = rdev_get_drvdata(rdev);
245         int                     grp = 0;
246         int                     ret;
247
248         if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS)))
249                 grp = P1_GRP_6030 | P2_GRP_6030 | P3_GRP_6030;
250
251         /* For 6030, set the off state for all grps enabled */
252         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
253                         (grp) << TWL6030_CFG_STATE_GRP_SHIFT |
254                         TWL6030_CFG_STATE_OFF);
255
256         return ret;
257 }
258
259 static int twl4030reg_get_status(struct regulator_dev *rdev)
260 {
261         int     state = twlreg_grp(rdev);
262
263         if (state < 0)
264                 return state;
265         state &= 0x0f;
266
267         /* assume state != WARM_RESET; we'd not be running...  */
268         if (!state)
269                 return REGULATOR_STATUS_OFF;
270         return (state & BIT(3))
271                 ? REGULATOR_STATUS_NORMAL
272                 : REGULATOR_STATUS_STANDBY;
273 }
274
275 static int twl6030reg_get_status(struct regulator_dev *rdev)
276 {
277         struct twlreg_info      *info = rdev_get_drvdata(rdev);
278         int                     val;
279
280         val = twlreg_grp(rdev);
281         if (val < 0)
282                 return val;
283
284         val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
285
286         switch (TWL6030_CFG_STATE_APP(val)) {
287         case TWL6030_CFG_STATE_ON:
288                 return REGULATOR_STATUS_NORMAL;
289
290         case TWL6030_CFG_STATE_SLEEP:
291                 return REGULATOR_STATUS_STANDBY;
292
293         case TWL6030_CFG_STATE_OFF:
294         case TWL6030_CFG_STATE_OFF2:
295         default:
296                 break;
297         }
298
299         return REGULATOR_STATUS_OFF;
300 }
301
302 static int twl4030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
303 {
304         struct twlreg_info      *info = rdev_get_drvdata(rdev);
305         unsigned                message;
306         int                     status;
307
308         /* We can only set the mode through state machine commands... */
309         switch (mode) {
310         case REGULATOR_MODE_NORMAL:
311                 message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_ACTIVE);
312                 break;
313         case REGULATOR_MODE_STANDBY:
314                 message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_SLEEP);
315                 break;
316         default:
317                 return -EINVAL;
318         }
319
320         /* Ensure the resource is associated with some group */
321         status = twlreg_grp(rdev);
322         if (status < 0)
323                 return status;
324         if (!(status & (P3_GRP_4030 | P2_GRP_4030 | P1_GRP_4030)))
325                 return -EACCES;
326
327         status = twl_i2c_write_u8(TWL_MODULE_PM_MASTER,
328                         message >> 8, TWL4030_PM_MASTER_PB_WORD_MSB);
329         if (status < 0)
330                 return status;
331
332         return twl_i2c_write_u8(TWL_MODULE_PM_MASTER,
333                         message & 0xff, TWL4030_PM_MASTER_PB_WORD_LSB);
334 }
335
336 static int twl6030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
337 {
338         struct twlreg_info      *info = rdev_get_drvdata(rdev);
339         int grp = 0;
340         int val;
341
342         if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS)))
343                 grp = twlreg_grp(rdev);
344
345         if (grp < 0)
346                 return grp;
347
348         /* Compose the state register settings */
349         val = grp << TWL6030_CFG_STATE_GRP_SHIFT;
350         /* We can only set the mode through state machine commands... */
351         switch (mode) {
352         case REGULATOR_MODE_NORMAL:
353                 val |= TWL6030_CFG_STATE_ON;
354                 break;
355         case REGULATOR_MODE_STANDBY:
356                 val |= TWL6030_CFG_STATE_SLEEP;
357                 break;
358
359         default:
360                 return -EINVAL;
361         }
362
363         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, val);
364 }
365
366 /*----------------------------------------------------------------------*/
367
368 /*
369  * Support for adjustable-voltage LDOs uses a four bit (or less) voltage
370  * select field in its control register.   We use tables indexed by VSEL
371  * to record voltages in milliVolts.  (Accuracy is about three percent.)
372  *
373  * Note that VSEL values for VAUX2 changed in twl5030 and newer silicon;
374  * currently handled by listing two slightly different VAUX2 regulators,
375  * only one of which will be configured.
376  *
377  * VSEL values documented as "TI cannot support these values" are flagged
378  * in these tables as UNSUP() values; we normally won't assign them.
379  *
380  * VAUX3 at 3V is incorrectly listed in some TI manuals as unsupported.
381  * TI are revising the twl5030/tps659x0 specs to support that 3.0V setting.
382  */
383 #define UNSUP_MASK      0x8000
384
385 #define UNSUP(x)        (UNSUP_MASK | (x))
386 #define IS_UNSUP(info, x)                       \
387         ((UNSUP_MASK & (x)) &&                  \
388          !((info)->features & TWL4030_ALLOW_UNSUPPORTED))
389 #define LDO_MV(x)       (~UNSUP_MASK & (x))
390
391
392 static const u16 VAUX1_VSEL_table[] = {
393         UNSUP(1500), UNSUP(1800), 2500, 2800,
394         3000, 3000, 3000, 3000,
395 };
396 static const u16 VAUX2_4030_VSEL_table[] = {
397         UNSUP(1000), UNSUP(1000), UNSUP(1200), 1300,
398         1500, 1800, UNSUP(1850), 2500,
399         UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000),
400         UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
401 };
402 static const u16 VAUX2_VSEL_table[] = {
403         1700, 1700, 1900, 1300,
404         1500, 1800, 2000, 2500,
405         2100, 2800, 2200, 2300,
406         2400, 2400, 2400, 2400,
407 };
408 static const u16 VAUX3_VSEL_table[] = {
409         1500, 1800, 2500, 2800,
410         3000, 3000, 3000, 3000,
411 };
412 static const u16 VAUX4_VSEL_table[] = {
413         700, 1000, 1200, UNSUP(1300),
414         1500, 1800, UNSUP(1850), 2500,
415         UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000),
416         UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
417 };
418 static const u16 VMMC1_VSEL_table[] = {
419         1850, 2850, 3000, 3150,
420 };
421 static const u16 VMMC2_VSEL_table[] = {
422         UNSUP(1000), UNSUP(1000), UNSUP(1200), UNSUP(1300),
423         UNSUP(1500), UNSUP(1800), 1850, UNSUP(2500),
424         2600, 2800, 2850, 3000,
425         3150, 3150, 3150, 3150,
426 };
427 static const u16 VPLL1_VSEL_table[] = {
428         1000, 1200, 1300, 1800,
429         UNSUP(2800), UNSUP(3000), UNSUP(3000), UNSUP(3000),
430 };
431 static const u16 VPLL2_VSEL_table[] = {
432         700, 1000, 1200, 1300,
433         UNSUP(1500), 1800, UNSUP(1850), UNSUP(2500),
434         UNSUP(2600), UNSUP(2800), UNSUP(2850), UNSUP(3000),
435         UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
436 };
437 static const u16 VSIM_VSEL_table[] = {
438         UNSUP(1000), UNSUP(1200), UNSUP(1300), 1800,
439         2800, 3000, 3000, 3000,
440 };
441 static const u16 VDAC_VSEL_table[] = {
442         1200, 1300, 1800, 1800,
443 };
444 static const u16 VDD1_VSEL_table[] = {
445         800, 1450,
446 };
447 static const u16 VDD2_VSEL_table[] = {
448         800, 1450, 1500,
449 };
450 static const u16 VIO_VSEL_table[] = {
451         1800, 1850,
452 };
453 static const u16 VINTANA2_VSEL_table[] = {
454         2500, 2750,
455 };
456
457 static int twl4030ldo_list_voltage(struct regulator_dev *rdev, unsigned index)
458 {
459         struct twlreg_info      *info = rdev_get_drvdata(rdev);
460         int                     mV = info->table[index];
461
462         return IS_UNSUP(info, mV) ? 0 : (LDO_MV(mV) * 1000);
463 }
464
465 static int
466 twl4030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
467 {
468         struct twlreg_info      *info = rdev_get_drvdata(rdev);
469
470         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE,
471                             selector);
472 }
473
474 static int twl4030ldo_get_voltage(struct regulator_dev *rdev)
475 {
476         struct twlreg_info      *info = rdev_get_drvdata(rdev);
477         int             vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER,
478                                                                 VREG_VOLTAGE);
479
480         if (vsel < 0)
481                 return vsel;
482
483         vsel &= info->table_len - 1;
484         return LDO_MV(info->table[vsel]) * 1000;
485 }
486
487 static struct regulator_ops twl4030ldo_ops = {
488         .list_voltage   = twl4030ldo_list_voltage,
489
490         .set_voltage_sel = twl4030ldo_set_voltage_sel,
491         .get_voltage    = twl4030ldo_get_voltage,
492
493         .enable         = twl4030reg_enable,
494         .disable        = twl4030reg_disable,
495         .is_enabled     = twl4030reg_is_enabled,
496
497         .set_mode       = twl4030reg_set_mode,
498
499         .get_status     = twl4030reg_get_status,
500 };
501
502 static int
503 twl4030smps_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV,
504                         unsigned *selector)
505 {
506         struct twlreg_info *info = rdev_get_drvdata(rdev);
507         int vsel = DIV_ROUND_UP(min_uV - 600000, 12500);
508
509         if (info->set_voltage) {
510                 return info->set_voltage(info->data, min_uV);
511         } else {
512                 twlreg_write(info, TWL_MODULE_PM_RECEIVER,
513                         VREG_VOLTAGE_SMPS_4030, vsel);
514         }
515
516         return 0;
517 }
518
519 static int twl4030smps_get_voltage(struct regulator_dev *rdev)
520 {
521         struct twlreg_info *info = rdev_get_drvdata(rdev);
522         int vsel;
523
524         if (info->get_voltage)
525                 return info->get_voltage(info->data);
526
527         vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER,
528                 VREG_VOLTAGE_SMPS_4030);
529
530         return vsel * 12500 + 600000;
531 }
532
533 static struct regulator_ops twl4030smps_ops = {
534         .set_voltage    = twl4030smps_set_voltage,
535         .get_voltage    = twl4030smps_get_voltage,
536 };
537
538 static int twl6030coresmps_set_voltage(struct regulator_dev *rdev, int min_uV,
539         int max_uV, unsigned *selector)
540 {
541         struct twlreg_info *info = rdev_get_drvdata(rdev);
542
543         if (info->set_voltage)
544                 return info->set_voltage(info->data, min_uV);
545
546         return -ENODEV;
547 }
548
549 static int twl6030coresmps_get_voltage(struct regulator_dev *rdev)
550 {
551         struct twlreg_info *info = rdev_get_drvdata(rdev);
552
553         if (info->get_voltage)
554                 return info->get_voltage(info->data);
555
556         return -ENODEV;
557 }
558
559 static struct regulator_ops twl6030coresmps_ops = {
560         .set_voltage    = twl6030coresmps_set_voltage,
561         .get_voltage    = twl6030coresmps_get_voltage,
562 };
563
564 static int twl6030ldo_list_voltage(struct regulator_dev *rdev, unsigned sel)
565 {
566         struct twlreg_info *info = rdev_get_drvdata(rdev);
567
568         switch (sel) {
569         case 0:
570                 return 0;
571         case 1 ... 24:
572                 /* Linear mapping from 00000001 to 00011000:
573                  * Absolute voltage value = 1.0 V + 0.1 V × (sel – 00000001)
574                  */
575                 return (info->min_mV + 100 * (sel - 1)) * 1000;
576         case 25 ... 30:
577                 return -EINVAL;
578         case 31:
579                 return 2750000;
580         default:
581                 return -EINVAL;
582         }
583 }
584
585 static int
586 twl6030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
587 {
588         struct twlreg_info      *info = rdev_get_drvdata(rdev);
589
590         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE,
591                             selector);
592 }
593
594 static int twl6030ldo_get_voltage_sel(struct regulator_dev *rdev)
595 {
596         struct twlreg_info      *info = rdev_get_drvdata(rdev);
597         int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE);
598
599         return vsel;
600 }
601
602 static struct regulator_ops twl6030ldo_ops = {
603         .list_voltage   = twl6030ldo_list_voltage,
604
605         .set_voltage_sel = twl6030ldo_set_voltage_sel,
606         .get_voltage_sel = twl6030ldo_get_voltage_sel,
607
608         .enable         = twl6030reg_enable,
609         .disable        = twl6030reg_disable,
610         .is_enabled     = twl6030reg_is_enabled,
611
612         .set_mode       = twl6030reg_set_mode,
613
614         .get_status     = twl6030reg_get_status,
615 };
616
617 /*----------------------------------------------------------------------*/
618
619 /*
620  * Fixed voltage LDOs don't have a VSEL field to update.
621  */
622 static int twlfixed_list_voltage(struct regulator_dev *rdev, unsigned index)
623 {
624         struct twlreg_info      *info = rdev_get_drvdata(rdev);
625
626         return info->min_mV * 1000;
627 }
628
629 static struct regulator_ops twl4030fixed_ops = {
630         .list_voltage   = twlfixed_list_voltage,
631
632         .enable         = twl4030reg_enable,
633         .disable        = twl4030reg_disable,
634         .is_enabled     = twl4030reg_is_enabled,
635
636         .set_mode       = twl4030reg_set_mode,
637
638         .get_status     = twl4030reg_get_status,
639 };
640
641 static struct regulator_ops twl6030fixed_ops = {
642         .list_voltage   = twlfixed_list_voltage,
643
644         .enable         = twl6030reg_enable,
645         .disable        = twl6030reg_disable,
646         .is_enabled     = twl6030reg_is_enabled,
647
648         .set_mode       = twl6030reg_set_mode,
649
650         .get_status     = twl6030reg_get_status,
651 };
652
653 /*
654  * SMPS status and control
655  */
656
657 static int twl6030smps_list_voltage(struct regulator_dev *rdev, unsigned index)
658 {
659         struct twlreg_info      *info = rdev_get_drvdata(rdev);
660
661         int voltage = 0;
662
663         switch (info->flags) {
664         case SMPS_OFFSET_EN:
665                 voltage = 100000;
666                 /* fall through */
667         case 0:
668                 switch (index) {
669                 case 0:
670                         voltage = 0;
671                         break;
672                 case 58:
673                         voltage = 1350 * 1000;
674                         break;
675                 case 59:
676                         voltage = 1500 * 1000;
677                         break;
678                 case 60:
679                         voltage = 1800 * 1000;
680                         break;
681                 case 61:
682                         voltage = 1900 * 1000;
683                         break;
684                 case 62:
685                         voltage = 2100 * 1000;
686                         break;
687                 default:
688                         voltage += (600000 + (12500 * (index - 1)));
689                 }
690                 break;
691         case SMPS_EXTENDED_EN:
692                 switch (index) {
693                 case 0:
694                         voltage = 0;
695                         break;
696                 case 58:
697                         voltage = 2084 * 1000;
698                         break;
699                 case 59:
700                         voltage = 2315 * 1000;
701                         break;
702                 case 60:
703                         voltage = 2778 * 1000;
704                         break;
705                 case 61:
706                         voltage = 2932 * 1000;
707                         break;
708                 case 62:
709                         voltage = 3241 * 1000;
710                         break;
711                 default:
712                         voltage = (1852000 + (38600 * (index - 1)));
713                 }
714                 break;
715         case SMPS_OFFSET_EN | SMPS_EXTENDED_EN:
716                 switch (index) {
717                 case 0:
718                         voltage = 0;
719                         break;
720                 case 58:
721                         voltage = 4167 * 1000;
722                         break;
723                 case 59:
724                         voltage = 2315 * 1000;
725                         break;
726                 case 60:
727                         voltage = 2778 * 1000;
728                         break;
729                 case 61:
730                         voltage = 2932 * 1000;
731                         break;
732                 case 62:
733                         voltage = 3241 * 1000;
734                         break;
735                 default:
736                         voltage = (2161000 + (38600 * (index - 1)));
737                 }
738                 break;
739         }
740
741         return voltage;
742 }
743
744 static int twl6030smps_map_voltage(struct regulator_dev *rdev, int min_uV,
745                                    int max_uV)
746 {
747         struct twlreg_info *info = rdev_get_drvdata(rdev);
748         int vsel = 0;
749
750         switch (info->flags) {
751         case 0:
752                 if (min_uV == 0)
753                         vsel = 0;
754                 else if ((min_uV >= 600000) && (min_uV <= 1300000)) {
755                         vsel = DIV_ROUND_UP(min_uV - 600000, 12500);
756                         vsel++;
757                 }
758                 /* Values 1..57 for vsel are linear and can be calculated
759                  * values 58..62 are non linear.
760                  */
761                 else if ((min_uV > 1900000) && (min_uV <= 2100000))
762                         vsel = 62;
763                 else if ((min_uV > 1800000) && (min_uV <= 1900000))
764                         vsel = 61;
765                 else if ((min_uV > 1500000) && (min_uV <= 1800000))
766                         vsel = 60;
767                 else if ((min_uV > 1350000) && (min_uV <= 1500000))
768                         vsel = 59;
769                 else if ((min_uV > 1300000) && (min_uV <= 1350000))
770                         vsel = 58;
771                 else
772                         return -EINVAL;
773                 break;
774         case SMPS_OFFSET_EN:
775                 if (min_uV == 0)
776                         vsel = 0;
777                 else if ((min_uV >= 700000) && (min_uV <= 1420000)) {
778                         vsel = DIV_ROUND_UP(min_uV - 700000, 12500);
779                         vsel++;
780                 }
781                 /* Values 1..57 for vsel are linear and can be calculated
782                  * values 58..62 are non linear.
783                  */
784                 else if ((min_uV > 1900000) && (min_uV <= 2100000))
785                         vsel = 62;
786                 else if ((min_uV > 1800000) && (min_uV <= 1900000))
787                         vsel = 61;
788                 else if ((min_uV > 1350000) && (min_uV <= 1800000))
789                         vsel = 60;
790                 else if ((min_uV > 1350000) && (min_uV <= 1500000))
791                         vsel = 59;
792                 else if ((min_uV > 1300000) && (min_uV <= 1350000))
793                         vsel = 58;
794                 else
795                         return -EINVAL;
796                 break;
797         case SMPS_EXTENDED_EN:
798                 if (min_uV == 0) {
799                         vsel = 0;
800                 } else if ((min_uV >= 1852000) && (max_uV <= 4013600)) {
801                         vsel = DIV_ROUND_UP(min_uV - 1852000, 38600);
802                         vsel++;
803                 }
804                 break;
805         case SMPS_OFFSET_EN|SMPS_EXTENDED_EN:
806                 if (min_uV == 0) {
807                         vsel = 0;
808                 } else if ((min_uV >= 2161000) && (min_uV <= 4321000)) {
809                         vsel = DIV_ROUND_UP(min_uV - 2161000, 38600);
810                         vsel++;
811                 }
812                 break;
813         }
814
815         return vsel;
816 }
817
818 static int twl6030smps_set_voltage_sel(struct regulator_dev *rdev,
819                                        unsigned int selector)
820 {
821         struct twlreg_info *info = rdev_get_drvdata(rdev);
822
823         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS,
824                             selector);
825 }
826
827 static int twl6030smps_get_voltage_sel(struct regulator_dev *rdev)
828 {
829         struct twlreg_info      *info = rdev_get_drvdata(rdev);
830
831         return twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS);
832 }
833
834 static struct regulator_ops twlsmps_ops = {
835         .list_voltage           = twl6030smps_list_voltage,
836         .map_voltage            = twl6030smps_map_voltage,
837
838         .set_voltage_sel        = twl6030smps_set_voltage_sel,
839         .get_voltage_sel        = twl6030smps_get_voltage_sel,
840
841         .enable                 = twl6030reg_enable,
842         .disable                = twl6030reg_disable,
843         .is_enabled             = twl6030reg_is_enabled,
844
845         .set_mode               = twl6030reg_set_mode,
846
847         .get_status             = twl6030reg_get_status,
848 };
849
850 /*----------------------------------------------------------------------*/
851
852 #define TWL4030_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
853                         remap_conf) \
854                 TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
855                         remap_conf, TWL4030, twl4030fixed_ops)
856 #define TWL6030_FIXED_LDO(label, offset, mVolts, turnon_delay) \
857                 TWL_FIXED_LDO(label, offset, mVolts, 0x0, turnon_delay, \
858                         0x0, TWL6030, twl6030fixed_ops)
859
860 #define TWL4030_ADJUSTABLE_LDO(label, offset, num, turnon_delay, remap_conf) \
861 static const struct twlreg_info TWL4030_INFO_##label = { \
862         .base = offset, \
863         .id = num, \
864         .table_len = ARRAY_SIZE(label##_VSEL_table), \
865         .table = label##_VSEL_table, \
866         .remap = remap_conf, \
867         .desc = { \
868                 .name = #label, \
869                 .id = TWL4030_REG_##label, \
870                 .n_voltages = ARRAY_SIZE(label##_VSEL_table), \
871                 .ops = &twl4030ldo_ops, \
872                 .type = REGULATOR_VOLTAGE, \
873                 .owner = THIS_MODULE, \
874                 .enable_time = turnon_delay, \
875                 }, \
876         }
877
878 #define TWL4030_ADJUSTABLE_SMPS(label, offset, num, turnon_delay, remap_conf) \
879 static const struct twlreg_info TWL4030_INFO_##label = { \
880         .base = offset, \
881         .id = num, \
882         .remap = remap_conf, \
883         .desc = { \
884                 .name = #label, \
885                 .id = TWL4030_REG_##label, \
886                 .ops = &twl4030smps_ops, \
887                 .type = REGULATOR_VOLTAGE, \
888                 .owner = THIS_MODULE, \
889                 .enable_time = turnon_delay, \
890                 }, \
891         }
892
893 #define TWL6030_ADJUSTABLE_SMPS(label) \
894 static const struct twlreg_info TWL6030_INFO_##label = { \
895         .desc = { \
896                 .name = #label, \
897                 .id = TWL6030_REG_##label, \
898                 .ops = &twl6030coresmps_ops, \
899                 .type = REGULATOR_VOLTAGE, \
900                 .owner = THIS_MODULE, \
901                 }, \
902         }
903
904 #define TWL6030_ADJUSTABLE_LDO(label, offset, min_mVolts, max_mVolts) \
905 static const struct twlreg_info TWL6030_INFO_##label = { \
906         .base = offset, \
907         .min_mV = min_mVolts, \
908         .max_mV = max_mVolts, \
909         .desc = { \
910                 .name = #label, \
911                 .id = TWL6030_REG_##label, \
912                 .n_voltages = 32, \
913                 .ops = &twl6030ldo_ops, \
914                 .type = REGULATOR_VOLTAGE, \
915                 .owner = THIS_MODULE, \
916                 }, \
917         }
918
919 #define TWL6025_ADJUSTABLE_LDO(label, offset, min_mVolts, max_mVolts) \
920 static const struct twlreg_info TWL6025_INFO_##label = { \
921         .base = offset, \
922         .min_mV = min_mVolts, \
923         .max_mV = max_mVolts, \
924         .desc = { \
925                 .name = #label, \
926                 .id = TWL6025_REG_##label, \
927                 .n_voltages = 32, \
928                 .ops = &twl6030ldo_ops, \
929                 .type = REGULATOR_VOLTAGE, \
930                 .owner = THIS_MODULE, \
931                 }, \
932         }
933
934 #define TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, remap_conf, \
935                 family, operations) \
936 static const struct twlreg_info TWLFIXED_INFO_##label = { \
937         .base = offset, \
938         .id = num, \
939         .min_mV = mVolts, \
940         .remap = remap_conf, \
941         .desc = { \
942                 .name = #label, \
943                 .id = family##_REG_##label, \
944                 .n_voltages = 1, \
945                 .ops = &operations, \
946                 .type = REGULATOR_VOLTAGE, \
947                 .owner = THIS_MODULE, \
948                 .enable_time = turnon_delay, \
949                 }, \
950         }
951
952 #define TWL6030_FIXED_RESOURCE(label, offset, turnon_delay) \
953 static struct twlreg_info TWLRES_INFO_##label = { \
954         .base = offset, \
955         .desc = { \
956                 .name = #label, \
957                 .id = TWL6030_REG_##label, \
958                 .ops = &twl6030_fixed_resource, \
959                 .type = REGULATOR_VOLTAGE, \
960                 .owner = THIS_MODULE, \
961                 .enable_time = turnon_delay, \
962                 }, \
963         }
964
965 #define TWL6025_ADJUSTABLE_SMPS(label, offset) \
966 static const struct twlreg_info TWLSMPS_INFO_##label = { \
967         .base = offset, \
968         .min_mV = 600, \
969         .max_mV = 2100, \
970         .desc = { \
971                 .name = #label, \
972                 .id = TWL6025_REG_##label, \
973                 .n_voltages = 63, \
974                 .ops = &twlsmps_ops, \
975                 .type = REGULATOR_VOLTAGE, \
976                 .owner = THIS_MODULE, \
977                 }, \
978         }
979
980 /*
981  * We list regulators here if systems need some level of
982  * software control over them after boot.
983  */
984 TWL4030_ADJUSTABLE_LDO(VAUX1, 0x17, 1, 100, 0x08);
985 TWL4030_ADJUSTABLE_LDO(VAUX2_4030, 0x1b, 2, 100, 0x08);
986 TWL4030_ADJUSTABLE_LDO(VAUX2, 0x1b, 2, 100, 0x08);
987 TWL4030_ADJUSTABLE_LDO(VAUX3, 0x1f, 3, 100, 0x08);
988 TWL4030_ADJUSTABLE_LDO(VAUX4, 0x23, 4, 100, 0x08);
989 TWL4030_ADJUSTABLE_LDO(VMMC1, 0x27, 5, 100, 0x08);
990 TWL4030_ADJUSTABLE_LDO(VMMC2, 0x2b, 6, 100, 0x08);
991 TWL4030_ADJUSTABLE_LDO(VPLL1, 0x2f, 7, 100, 0x00);
992 TWL4030_ADJUSTABLE_LDO(VPLL2, 0x33, 8, 100, 0x08);
993 TWL4030_ADJUSTABLE_LDO(VSIM, 0x37, 9, 100, 0x00);
994 TWL4030_ADJUSTABLE_LDO(VDAC, 0x3b, 10, 100, 0x08);
995 TWL4030_ADJUSTABLE_LDO(VINTANA2, 0x43, 12, 100, 0x08);
996 TWL4030_ADJUSTABLE_LDO(VIO, 0x4b, 14, 1000, 0x08);
997 TWL4030_ADJUSTABLE_SMPS(VDD1, 0x55, 15, 1000, 0x08);
998 TWL4030_ADJUSTABLE_SMPS(VDD2, 0x63, 16, 1000, 0x08);
999 /* VUSBCP is managed *only* by the USB subchip */
1000 /* 6030 REG with base as PMC Slave Misc : 0x0030 */
1001 /* Turnon-delay and remap configuration values for 6030 are not
1002    verified since the specification is not public */
1003 TWL6030_ADJUSTABLE_SMPS(VDD1);
1004 TWL6030_ADJUSTABLE_SMPS(VDD2);
1005 TWL6030_ADJUSTABLE_SMPS(VDD3);
1006 TWL6030_ADJUSTABLE_LDO(VAUX1_6030, 0x54, 1000, 3300);
1007 TWL6030_ADJUSTABLE_LDO(VAUX2_6030, 0x58, 1000, 3300);
1008 TWL6030_ADJUSTABLE_LDO(VAUX3_6030, 0x5c, 1000, 3300);
1009 TWL6030_ADJUSTABLE_LDO(VMMC, 0x68, 1000, 3300);
1010 TWL6030_ADJUSTABLE_LDO(VPP, 0x6c, 1000, 3300);
1011 TWL6030_ADJUSTABLE_LDO(VUSIM, 0x74, 1000, 3300);
1012 /* 6025 are renamed compared to 6030 versions */
1013 TWL6025_ADJUSTABLE_LDO(LDO2, 0x54, 1000, 3300);
1014 TWL6025_ADJUSTABLE_LDO(LDO4, 0x58, 1000, 3300);
1015 TWL6025_ADJUSTABLE_LDO(LDO3, 0x5c, 1000, 3300);
1016 TWL6025_ADJUSTABLE_LDO(LDO5, 0x68, 1000, 3300);
1017 TWL6025_ADJUSTABLE_LDO(LDO1, 0x6c, 1000, 3300);
1018 TWL6025_ADJUSTABLE_LDO(LDO7, 0x74, 1000, 3300);
1019 TWL6025_ADJUSTABLE_LDO(LDO6, 0x60, 1000, 3300);
1020 TWL6025_ADJUSTABLE_LDO(LDOLN, 0x64, 1000, 3300);
1021 TWL6025_ADJUSTABLE_LDO(LDOUSB, 0x70, 1000, 3300);
1022 TWL4030_FIXED_LDO(VINTANA1, 0x3f, 1500, 11, 100, 0x08);
1023 TWL4030_FIXED_LDO(VINTDIG, 0x47, 1500, 13, 100, 0x08);
1024 TWL4030_FIXED_LDO(VUSB1V5, 0x71, 1500, 17, 100, 0x08);
1025 TWL4030_FIXED_LDO(VUSB1V8, 0x74, 1800, 18, 100, 0x08);
1026 TWL4030_FIXED_LDO(VUSB3V1, 0x77, 3100, 19, 150, 0x08);
1027 TWL6030_FIXED_LDO(VANA, 0x50, 2100, 0);
1028 TWL6030_FIXED_LDO(VCXIO, 0x60, 1800, 0);
1029 TWL6030_FIXED_LDO(VDAC, 0x64, 1800, 0);
1030 TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 0);
1031 TWL6030_FIXED_LDO(V1V8, 0x16, 1800, 0);
1032 TWL6030_FIXED_LDO(V2V1, 0x1c, 2100, 0);
1033 TWL6025_ADJUSTABLE_SMPS(SMPS3, 0x34);
1034 TWL6025_ADJUSTABLE_SMPS(SMPS4, 0x10);
1035 TWL6025_ADJUSTABLE_SMPS(VIO, 0x16);
1036
1037 static u8 twl_get_smps_offset(void)
1038 {
1039         u8 value;
1040
1041         twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
1042                         TWL6030_SMPS_OFFSET);
1043         return value;
1044 }
1045
1046 static u8 twl_get_smps_mult(void)
1047 {
1048         u8 value;
1049
1050         twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
1051                         TWL6030_SMPS_MULT);
1052         return value;
1053 }
1054
1055 #define TWL_OF_MATCH(comp, family, label) \
1056         { \
1057                 .compatible = comp, \
1058                 .data = &family##_INFO_##label, \
1059         }
1060
1061 #define TWL4030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL4030, label)
1062 #define TWL6030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6030, label)
1063 #define TWL6025_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6025, label)
1064 #define TWLFIXED_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLFIXED, label)
1065 #define TWLSMPS_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLSMPS, label)
1066
1067 static const struct of_device_id twl_of_match[] __devinitconst = {
1068         TWL4030_OF_MATCH("ti,twl4030-vaux1", VAUX1),
1069         TWL4030_OF_MATCH("ti,twl4030-vaux2", VAUX2_4030),
1070         TWL4030_OF_MATCH("ti,twl5030-vaux2", VAUX2),
1071         TWL4030_OF_MATCH("ti,twl4030-vaux3", VAUX3),
1072         TWL4030_OF_MATCH("ti,twl4030-vaux4", VAUX4),
1073         TWL4030_OF_MATCH("ti,twl4030-vmmc1", VMMC1),
1074         TWL4030_OF_MATCH("ti,twl4030-vmmc2", VMMC2),
1075         TWL4030_OF_MATCH("ti,twl4030-vpll1", VPLL1),
1076         TWL4030_OF_MATCH("ti,twl4030-vpll2", VPLL2),
1077         TWL4030_OF_MATCH("ti,twl4030-vsim", VSIM),
1078         TWL4030_OF_MATCH("ti,twl4030-vdac", VDAC),
1079         TWL4030_OF_MATCH("ti,twl4030-vintana2", VINTANA2),
1080         TWL4030_OF_MATCH("ti,twl4030-vio", VIO),
1081         TWL4030_OF_MATCH("ti,twl4030-vdd1", VDD1),
1082         TWL4030_OF_MATCH("ti,twl4030-vdd2", VDD2),
1083         TWL6030_OF_MATCH("ti,twl6030-vdd1", VDD1),
1084         TWL6030_OF_MATCH("ti,twl6030-vdd2", VDD2),
1085         TWL6030_OF_MATCH("ti,twl6030-vdd3", VDD3),
1086         TWL6030_OF_MATCH("ti,twl6030-vaux1", VAUX1_6030),
1087         TWL6030_OF_MATCH("ti,twl6030-vaux2", VAUX2_6030),
1088         TWL6030_OF_MATCH("ti,twl6030-vaux3", VAUX3_6030),
1089         TWL6030_OF_MATCH("ti,twl6030-vmmc", VMMC),
1090         TWL6030_OF_MATCH("ti,twl6030-vpp", VPP),
1091         TWL6030_OF_MATCH("ti,twl6030-vusim", VUSIM),
1092         TWL6025_OF_MATCH("ti,twl6025-ldo2", LDO2),
1093         TWL6025_OF_MATCH("ti,twl6025-ldo4", LDO4),
1094         TWL6025_OF_MATCH("ti,twl6025-ldo3", LDO3),
1095         TWL6025_OF_MATCH("ti,twl6025-ldo5", LDO5),
1096         TWL6025_OF_MATCH("ti,twl6025-ldo1", LDO1),
1097         TWL6025_OF_MATCH("ti,twl6025-ldo7", LDO7),
1098         TWL6025_OF_MATCH("ti,twl6025-ldo6", LDO6),
1099         TWL6025_OF_MATCH("ti,twl6025-ldoln", LDOLN),
1100         TWL6025_OF_MATCH("ti,twl6025-ldousb", LDOUSB),
1101         TWLFIXED_OF_MATCH("ti,twl4030-vintana1", VINTANA1),
1102         TWLFIXED_OF_MATCH("ti,twl4030-vintdig", VINTDIG),
1103         TWLFIXED_OF_MATCH("ti,twl4030-vusb1v5", VUSB1V5),
1104         TWLFIXED_OF_MATCH("ti,twl4030-vusb1v8", VUSB1V8),
1105         TWLFIXED_OF_MATCH("ti,twl4030-vusb3v1", VUSB3V1),
1106         TWLFIXED_OF_MATCH("ti,twl6030-vana", VANA),
1107         TWLFIXED_OF_MATCH("ti,twl6030-vcxio", VCXIO),
1108         TWLFIXED_OF_MATCH("ti,twl6030-vdac", VDAC),
1109         TWLFIXED_OF_MATCH("ti,twl6030-vusb", VUSB),
1110         TWLFIXED_OF_MATCH("ti,twl6030-v1v8", V1V8),
1111         TWLFIXED_OF_MATCH("ti,twl6030-v2v1", V2V1),
1112         TWLSMPS_OF_MATCH("ti,twl6025-smps3", SMPS3),
1113         TWLSMPS_OF_MATCH("ti,twl6025-smps4", SMPS4),
1114         TWLSMPS_OF_MATCH("ti,twl6025-vio", VIO),
1115         {},
1116 };
1117 MODULE_DEVICE_TABLE(of, twl_of_match);
1118
1119 static int __devinit twlreg_probe(struct platform_device *pdev)
1120 {
1121         int                             i, id;
1122         struct twlreg_info              *info;
1123         const struct twlreg_info        *template;
1124         struct regulator_init_data      *initdata;
1125         struct regulation_constraints   *c;
1126         struct regulator_dev            *rdev;
1127         struct twl_regulator_driver_data        *drvdata;
1128         const struct of_device_id       *match;
1129         struct regulator_config         config = { };
1130
1131         match = of_match_device(twl_of_match, &pdev->dev);
1132         if (match) {
1133                 template = match->data;
1134                 id = template->desc.id;
1135                 initdata = of_get_regulator_init_data(&pdev->dev,
1136                                                       pdev->dev.of_node);
1137                 drvdata = NULL;
1138         } else {
1139                 id = pdev->id;
1140                 initdata = pdev->dev.platform_data;
1141                 for (i = 0, template = NULL; i < ARRAY_SIZE(twl_of_match); i++) {
1142                         template = twl_of_match[i].data;
1143                         if (template && template->desc.id == id)
1144                                 break;
1145                 }
1146                 if (i == ARRAY_SIZE(twl_of_match))
1147                         return -ENODEV;
1148
1149                 drvdata = initdata->driver_data;
1150                 if (!drvdata)
1151                         return -EINVAL;
1152         }
1153
1154         if (!template)
1155                 return -ENODEV;
1156
1157         if (!initdata)
1158                 return -EINVAL;
1159
1160         info = kmemdup(template, sizeof (*info), GFP_KERNEL);
1161         if (!info)
1162                 return -ENOMEM;
1163
1164         if (drvdata) {
1165                 /* copy the driver data into regulator data */
1166                 info->features = drvdata->features;
1167                 info->data = drvdata->data;
1168                 info->set_voltage = drvdata->set_voltage;
1169                 info->get_voltage = drvdata->get_voltage;
1170         }
1171
1172         /* Constrain board-specific capabilities according to what
1173          * this driver and the chip itself can actually do.
1174          */
1175         c = &initdata->constraints;
1176         c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY;
1177         c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE
1178                                 | REGULATOR_CHANGE_MODE
1179                                 | REGULATOR_CHANGE_STATUS;
1180         switch (id) {
1181         case TWL4030_REG_VIO:
1182         case TWL4030_REG_VDD1:
1183         case TWL4030_REG_VDD2:
1184         case TWL4030_REG_VPLL1:
1185         case TWL4030_REG_VINTANA1:
1186         case TWL4030_REG_VINTANA2:
1187         case TWL4030_REG_VINTDIG:
1188                 c->always_on = true;
1189                 break;
1190         default:
1191                 break;
1192         }
1193
1194         switch (id) {
1195         case TWL6025_REG_SMPS3:
1196                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS3)
1197                         info->flags |= SMPS_EXTENDED_EN;
1198                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS3)
1199                         info->flags |= SMPS_OFFSET_EN;
1200                 break;
1201         case TWL6025_REG_SMPS4:
1202                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS4)
1203                         info->flags |= SMPS_EXTENDED_EN;
1204                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS4)
1205                         info->flags |= SMPS_OFFSET_EN;
1206                 break;
1207         case TWL6025_REG_VIO:
1208                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_VIO)
1209                         info->flags |= SMPS_EXTENDED_EN;
1210                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_VIO)
1211                         info->flags |= SMPS_OFFSET_EN;
1212                 break;
1213         }
1214
1215         config.dev = &pdev->dev;
1216         config.init_data = initdata;
1217         config.driver_data = info;
1218         config.of_node = pdev->dev.of_node;
1219
1220         rdev = regulator_register(&info->desc, &config);
1221         if (IS_ERR(rdev)) {
1222                 dev_err(&pdev->dev, "can't register %s, %ld\n",
1223                                 info->desc.name, PTR_ERR(rdev));
1224                 kfree(info);
1225                 return PTR_ERR(rdev);
1226         }
1227         platform_set_drvdata(pdev, rdev);
1228
1229         if (twl_class_is_4030())
1230                 twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_REMAP,
1231                                                 info->remap);
1232
1233         /* NOTE:  many regulators support short-circuit IRQs (presentable
1234          * as REGULATOR_OVER_CURRENT notifications?) configured via:
1235          *  - SC_CONFIG
1236          *  - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4)
1237          *  - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2)
1238          *  - IT_CONFIG
1239          */
1240
1241         return 0;
1242 }
1243
1244 static int __devexit twlreg_remove(struct platform_device *pdev)
1245 {
1246         struct regulator_dev *rdev = platform_get_drvdata(pdev);
1247         struct twlreg_info *info = rdev->reg_data;
1248
1249         regulator_unregister(rdev);
1250         kfree(info);
1251         return 0;
1252 }
1253
1254 MODULE_ALIAS("platform:twl_reg");
1255
1256 static struct platform_driver twlreg_driver = {
1257         .probe          = twlreg_probe,
1258         .remove         = __devexit_p(twlreg_remove),
1259         /* NOTE: short name, to work around driver model truncation of
1260          * "twl_regulator.12" (and friends) to "twl_regulator.1".
1261          */
1262         .driver  = {
1263                 .name  = "twl_reg",
1264                 .owner = THIS_MODULE,
1265                 .of_match_table = of_match_ptr(twl_of_match),
1266         },
1267 };
1268
1269 static int __init twlreg_init(void)
1270 {
1271         return platform_driver_register(&twlreg_driver);
1272 }
1273 subsys_initcall(twlreg_init);
1274
1275 static void __exit twlreg_exit(void)
1276 {
1277         platform_driver_unregister(&twlreg_driver);
1278 }
1279 module_exit(twlreg_exit)
1280
1281 MODULE_DESCRIPTION("TWL regulator driver");
1282 MODULE_LICENSE("GPL");