regulator: twl: Remove references to 32kHz clock from DT bindings
[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/init.h>
14 #include <linux/err.h>
15 #include <linux/platform_device.h>
16 #include <linux/of.h>
17 #include <linux/of_device.h>
18 #include <linux/regulator/driver.h>
19 #include <linux/regulator/machine.h>
20 #include <linux/regulator/of_regulator.h>
21 #include <linux/i2c/twl.h>
22
23
24 /*
25  * The TWL4030/TW5030/TPS659x0/TWL6030 family chips include power management, a
26  * USB OTG transceiver, an RTC, ADC, PWM, and lots more.  Some versions
27  * include an audio codec, battery charger, and more voltage regulators.
28  * These chips are often used in OMAP-based systems.
29  *
30  * This driver implements software-based resource control for various
31  * voltage regulators.  This is usually augmented with state machine
32  * based control.
33  */
34
35 struct twlreg_info {
36         /* start of regulator's PM_RECEIVER control register bank */
37         u8                      base;
38
39         /* twl resource ID, for resource control state machine */
40         u8                      id;
41
42         /* voltage in mV = table[VSEL]; table_len must be a power-of-two */
43         u8                      table_len;
44         const u16               *table;
45
46         /* regulator specific turn-on delay */
47         u16                     delay;
48
49         /* State REMAP default configuration */
50         u8                      remap;
51
52         /* chip constraints on regulator behavior */
53         u16                     min_mV;
54         u16                     max_mV;
55
56         u8                      flags;
57
58         /* used by regulator core */
59         struct regulator_desc   desc;
60
61         /* chip specific features */
62         unsigned long           features;
63
64         /*
65          * optional override functions for voltage set/get
66          * these are currently only used for SMPS regulators
67          */
68         int                     (*get_voltage)(void *data);
69         int                     (*set_voltage)(void *data, int target_uV);
70
71         /* data passed from board for external get/set voltage */
72         void                    *data;
73 };
74
75
76 /* LDO control registers ... offset is from the base of its register bank.
77  * The first three registers of all power resource banks help hardware to
78  * manage the various resource groups.
79  */
80 /* Common offset in TWL4030/6030 */
81 #define VREG_GRP                0
82 /* TWL4030 register offsets */
83 #define VREG_TYPE               1
84 #define VREG_REMAP              2
85 #define VREG_DEDICATED          3       /* LDO control */
86 #define VREG_VOLTAGE_SMPS_4030  9
87 /* TWL6030 register offsets */
88 #define VREG_TRANS              1
89 #define VREG_STATE              2
90 #define VREG_VOLTAGE            3
91 #define VREG_VOLTAGE_SMPS       4
92 /* TWL6030 Misc register offsets */
93 #define VREG_BC_ALL             1
94 #define VREG_BC_REF             2
95 #define VREG_BC_PROC            3
96 #define VREG_BC_CLK_RST         4
97
98 /* TWL6030 LDO register values for CFG_STATE */
99 #define TWL6030_CFG_STATE_OFF   0x00
100 #define TWL6030_CFG_STATE_ON    0x01
101 #define TWL6030_CFG_STATE_OFF2  0x02
102 #define TWL6030_CFG_STATE_SLEEP 0x03
103 #define TWL6030_CFG_STATE_GRP_SHIFT     5
104 #define TWL6030_CFG_STATE_APP_SHIFT     2
105 #define TWL6030_CFG_STATE_APP_MASK      (0x03 << TWL6030_CFG_STATE_APP_SHIFT)
106 #define TWL6030_CFG_STATE_APP(v)        (((v) & TWL6030_CFG_STATE_APP_MASK) >>\
107                                                 TWL6030_CFG_STATE_APP_SHIFT)
108
109 /* Flags for SMPS Voltage reading */
110 #define SMPS_OFFSET_EN          BIT(0)
111 #define SMPS_EXTENDED_EN        BIT(1)
112
113 /* twl6025 SMPS EPROM values */
114 #define TWL6030_SMPS_OFFSET             0xB0
115 #define TWL6030_SMPS_MULT               0xB3
116 #define SMPS_MULTOFFSET_SMPS4   BIT(0)
117 #define SMPS_MULTOFFSET_VIO     BIT(1)
118 #define SMPS_MULTOFFSET_SMPS3   BIT(6)
119
120 static inline int
121 twlreg_read(struct twlreg_info *info, unsigned slave_subgp, unsigned offset)
122 {
123         u8 value;
124         int status;
125
126         status = twl_i2c_read_u8(slave_subgp,
127                         &value, info->base + offset);
128         return (status < 0) ? status : value;
129 }
130
131 static inline int
132 twlreg_write(struct twlreg_info *info, unsigned slave_subgp, unsigned offset,
133                                                  u8 value)
134 {
135         return twl_i2c_write_u8(slave_subgp,
136                         value, info->base + offset);
137 }
138
139 /*----------------------------------------------------------------------*/
140
141 /* generic power resource operations, which work on all regulators */
142
143 static int twlreg_grp(struct regulator_dev *rdev)
144 {
145         return twlreg_read(rdev_get_drvdata(rdev), TWL_MODULE_PM_RECEIVER,
146                                                                  VREG_GRP);
147 }
148
149 /*
150  * Enable/disable regulators by joining/leaving the P1 (processor) group.
151  * We assume nobody else is updating the DEV_GRP registers.
152  */
153 /* definition for 4030 family */
154 #define P3_GRP_4030     BIT(7)          /* "peripherals" */
155 #define P2_GRP_4030     BIT(6)          /* secondary processor, modem, etc */
156 #define P1_GRP_4030     BIT(5)          /* CPU/Linux */
157 /* definition for 6030 family */
158 #define P3_GRP_6030     BIT(2)          /* secondary processor, modem, etc */
159 #define P2_GRP_6030     BIT(1)          /* "peripherals" */
160 #define P1_GRP_6030     BIT(0)          /* CPU/Linux */
161
162 static int twl4030reg_is_enabled(struct regulator_dev *rdev)
163 {
164         int     state = twlreg_grp(rdev);
165
166         if (state < 0)
167                 return state;
168
169         return state & P1_GRP_4030;
170 }
171
172 static int twl6030reg_is_enabled(struct regulator_dev *rdev)
173 {
174         struct twlreg_info      *info = rdev_get_drvdata(rdev);
175         int                     grp = 0, val;
176
177         if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS))) {
178                 grp = twlreg_grp(rdev);
179                 if (grp < 0)
180                         return grp;
181                 grp &= P1_GRP_6030;
182         } else {
183                 grp = 1;
184         }
185
186         val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
187         val = TWL6030_CFG_STATE_APP(val);
188
189         return grp && (val == TWL6030_CFG_STATE_ON);
190 }
191
192 static int twl4030reg_enable(struct regulator_dev *rdev)
193 {
194         struct twlreg_info      *info = rdev_get_drvdata(rdev);
195         int                     grp;
196         int                     ret;
197
198         grp = twlreg_grp(rdev);
199         if (grp < 0)
200                 return grp;
201
202         grp |= P1_GRP_4030;
203
204         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp);
205
206         return ret;
207 }
208
209 static int twl6030reg_enable(struct regulator_dev *rdev)
210 {
211         struct twlreg_info      *info = rdev_get_drvdata(rdev);
212         int                     grp = 0;
213         int                     ret;
214
215         if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS)))
216                 grp = twlreg_grp(rdev);
217         if (grp < 0)
218                 return grp;
219
220         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
221                         grp << TWL6030_CFG_STATE_GRP_SHIFT |
222                         TWL6030_CFG_STATE_ON);
223         return ret;
224 }
225
226 static int twl4030reg_enable_time(struct regulator_dev *rdev)
227 {
228         struct twlreg_info      *info = rdev_get_drvdata(rdev);
229
230         return info->delay;
231 }
232
233 static int twl6030reg_enable_time(struct regulator_dev *rdev)
234 {
235         struct twlreg_info      *info = rdev_get_drvdata(rdev);
236
237         return info->delay;
238 }
239
240 static int twl4030reg_disable(struct regulator_dev *rdev)
241 {
242         struct twlreg_info      *info = rdev_get_drvdata(rdev);
243         int                     grp;
244         int                     ret;
245
246         grp = twlreg_grp(rdev);
247         if (grp < 0)
248                 return grp;
249
250         grp &= ~(P1_GRP_4030 | P2_GRP_4030 | P3_GRP_4030);
251
252         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp);
253
254         return ret;
255 }
256
257 static int twl6030reg_disable(struct regulator_dev *rdev)
258 {
259         struct twlreg_info      *info = rdev_get_drvdata(rdev);
260         int                     grp = 0;
261         int                     ret;
262
263         if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS)))
264                 grp = P1_GRP_6030 | P2_GRP_6030 | P3_GRP_6030;
265
266         /* For 6030, set the off state for all grps enabled */
267         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
268                         (grp) << TWL6030_CFG_STATE_GRP_SHIFT |
269                         TWL6030_CFG_STATE_OFF);
270
271         return ret;
272 }
273
274 static int twl4030reg_get_status(struct regulator_dev *rdev)
275 {
276         int     state = twlreg_grp(rdev);
277
278         if (state < 0)
279                 return state;
280         state &= 0x0f;
281
282         /* assume state != WARM_RESET; we'd not be running...  */
283         if (!state)
284                 return REGULATOR_STATUS_OFF;
285         return (state & BIT(3))
286                 ? REGULATOR_STATUS_NORMAL
287                 : REGULATOR_STATUS_STANDBY;
288 }
289
290 static int twl6030reg_get_status(struct regulator_dev *rdev)
291 {
292         struct twlreg_info      *info = rdev_get_drvdata(rdev);
293         int                     val;
294
295         val = twlreg_grp(rdev);
296         if (val < 0)
297                 return val;
298
299         val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
300
301         switch (TWL6030_CFG_STATE_APP(val)) {
302         case TWL6030_CFG_STATE_ON:
303                 return REGULATOR_STATUS_NORMAL;
304
305         case TWL6030_CFG_STATE_SLEEP:
306                 return REGULATOR_STATUS_STANDBY;
307
308         case TWL6030_CFG_STATE_OFF:
309         case TWL6030_CFG_STATE_OFF2:
310         default:
311                 break;
312         }
313
314         return REGULATOR_STATUS_OFF;
315 }
316
317 static int twl4030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
318 {
319         struct twlreg_info      *info = rdev_get_drvdata(rdev);
320         unsigned                message;
321         int                     status;
322
323         /* We can only set the mode through state machine commands... */
324         switch (mode) {
325         case REGULATOR_MODE_NORMAL:
326                 message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_ACTIVE);
327                 break;
328         case REGULATOR_MODE_STANDBY:
329                 message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_SLEEP);
330                 break;
331         default:
332                 return -EINVAL;
333         }
334
335         /* Ensure the resource is associated with some group */
336         status = twlreg_grp(rdev);
337         if (status < 0)
338                 return status;
339         if (!(status & (P3_GRP_4030 | P2_GRP_4030 | P1_GRP_4030)))
340                 return -EACCES;
341
342         status = twl_i2c_write_u8(TWL_MODULE_PM_MASTER,
343                         message >> 8, TWL4030_PM_MASTER_PB_WORD_MSB);
344         if (status < 0)
345                 return status;
346
347         return twl_i2c_write_u8(TWL_MODULE_PM_MASTER,
348                         message & 0xff, TWL4030_PM_MASTER_PB_WORD_LSB);
349 }
350
351 static int twl6030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
352 {
353         struct twlreg_info      *info = rdev_get_drvdata(rdev);
354         int grp = 0;
355         int val;
356
357         if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS)))
358                 grp = twlreg_grp(rdev);
359
360         if (grp < 0)
361                 return grp;
362
363         /* Compose the state register settings */
364         val = grp << TWL6030_CFG_STATE_GRP_SHIFT;
365         /* We can only set the mode through state machine commands... */
366         switch (mode) {
367         case REGULATOR_MODE_NORMAL:
368                 val |= TWL6030_CFG_STATE_ON;
369                 break;
370         case REGULATOR_MODE_STANDBY:
371                 val |= TWL6030_CFG_STATE_SLEEP;
372                 break;
373
374         default:
375                 return -EINVAL;
376         }
377
378         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, val);
379 }
380
381 /*----------------------------------------------------------------------*/
382
383 /*
384  * Support for adjustable-voltage LDOs uses a four bit (or less) voltage
385  * select field in its control register.   We use tables indexed by VSEL
386  * to record voltages in milliVolts.  (Accuracy is about three percent.)
387  *
388  * Note that VSEL values for VAUX2 changed in twl5030 and newer silicon;
389  * currently handled by listing two slightly different VAUX2 regulators,
390  * only one of which will be configured.
391  *
392  * VSEL values documented as "TI cannot support these values" are flagged
393  * in these tables as UNSUP() values; we normally won't assign them.
394  *
395  * VAUX3 at 3V is incorrectly listed in some TI manuals as unsupported.
396  * TI are revising the twl5030/tps659x0 specs to support that 3.0V setting.
397  */
398 #define UNSUP_MASK      0x8000
399
400 #define UNSUP(x)        (UNSUP_MASK | (x))
401 #define IS_UNSUP(info, x)                       \
402         ((UNSUP_MASK & (x)) &&                  \
403          !((info)->features & TWL4030_ALLOW_UNSUPPORTED))
404 #define LDO_MV(x)       (~UNSUP_MASK & (x))
405
406
407 static const u16 VAUX1_VSEL_table[] = {
408         UNSUP(1500), UNSUP(1800), 2500, 2800,
409         3000, 3000, 3000, 3000,
410 };
411 static const u16 VAUX2_4030_VSEL_table[] = {
412         UNSUP(1000), UNSUP(1000), UNSUP(1200), 1300,
413         1500, 1800, UNSUP(1850), 2500,
414         UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000),
415         UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
416 };
417 static const u16 VAUX2_VSEL_table[] = {
418         1700, 1700, 1900, 1300,
419         1500, 1800, 2000, 2500,
420         2100, 2800, 2200, 2300,
421         2400, 2400, 2400, 2400,
422 };
423 static const u16 VAUX3_VSEL_table[] = {
424         1500, 1800, 2500, 2800,
425         3000, 3000, 3000, 3000,
426 };
427 static const u16 VAUX4_VSEL_table[] = {
428         700, 1000, 1200, UNSUP(1300),
429         1500, 1800, UNSUP(1850), 2500,
430         UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000),
431         UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
432 };
433 static const u16 VMMC1_VSEL_table[] = {
434         1850, 2850, 3000, 3150,
435 };
436 static const u16 VMMC2_VSEL_table[] = {
437         UNSUP(1000), UNSUP(1000), UNSUP(1200), UNSUP(1300),
438         UNSUP(1500), UNSUP(1800), 1850, UNSUP(2500),
439         2600, 2800, 2850, 3000,
440         3150, 3150, 3150, 3150,
441 };
442 static const u16 VPLL1_VSEL_table[] = {
443         1000, 1200, 1300, 1800,
444         UNSUP(2800), UNSUP(3000), UNSUP(3000), UNSUP(3000),
445 };
446 static const u16 VPLL2_VSEL_table[] = {
447         700, 1000, 1200, 1300,
448         UNSUP(1500), 1800, UNSUP(1850), UNSUP(2500),
449         UNSUP(2600), UNSUP(2800), UNSUP(2850), UNSUP(3000),
450         UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
451 };
452 static const u16 VSIM_VSEL_table[] = {
453         UNSUP(1000), UNSUP(1200), UNSUP(1300), 1800,
454         2800, 3000, 3000, 3000,
455 };
456 static const u16 VDAC_VSEL_table[] = {
457         1200, 1300, 1800, 1800,
458 };
459 static const u16 VDD1_VSEL_table[] = {
460         800, 1450,
461 };
462 static const u16 VDD2_VSEL_table[] = {
463         800, 1450, 1500,
464 };
465 static const u16 VIO_VSEL_table[] = {
466         1800, 1850,
467 };
468 static const u16 VINTANA2_VSEL_table[] = {
469         2500, 2750,
470 };
471
472 static int twl4030ldo_list_voltage(struct regulator_dev *rdev, unsigned index)
473 {
474         struct twlreg_info      *info = rdev_get_drvdata(rdev);
475         int                     mV = info->table[index];
476
477         return IS_UNSUP(info, mV) ? 0 : (LDO_MV(mV) * 1000);
478 }
479
480 static int
481 twl4030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
482 {
483         struct twlreg_info      *info = rdev_get_drvdata(rdev);
484
485         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE,
486                             selector);
487 }
488
489 static int twl4030ldo_get_voltage(struct regulator_dev *rdev)
490 {
491         struct twlreg_info      *info = rdev_get_drvdata(rdev);
492         int             vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER,
493                                                                 VREG_VOLTAGE);
494
495         if (vsel < 0)
496                 return vsel;
497
498         vsel &= info->table_len - 1;
499         return LDO_MV(info->table[vsel]) * 1000;
500 }
501
502 static struct regulator_ops twl4030ldo_ops = {
503         .list_voltage   = twl4030ldo_list_voltage,
504
505         .set_voltage_sel = twl4030ldo_set_voltage_sel,
506         .get_voltage    = twl4030ldo_get_voltage,
507
508         .enable         = twl4030reg_enable,
509         .disable        = twl4030reg_disable,
510         .is_enabled     = twl4030reg_is_enabled,
511         .enable_time    = twl4030reg_enable_time,
512
513         .set_mode       = twl4030reg_set_mode,
514
515         .get_status     = twl4030reg_get_status,
516 };
517
518 static int
519 twl4030smps_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV,
520                         unsigned *selector)
521 {
522         struct twlreg_info *info = rdev_get_drvdata(rdev);
523         int vsel = DIV_ROUND_UP(min_uV - 600000, 12500);
524
525         if (info->set_voltage) {
526                 return info->set_voltage(info->data, min_uV);
527         } else {
528                 twlreg_write(info, TWL_MODULE_PM_RECEIVER,
529                         VREG_VOLTAGE_SMPS_4030, vsel);
530         }
531
532         return 0;
533 }
534
535 static int twl4030smps_get_voltage(struct regulator_dev *rdev)
536 {
537         struct twlreg_info *info = rdev_get_drvdata(rdev);
538         int vsel;
539
540         if (info->get_voltage)
541                 return info->get_voltage(info->data);
542
543         vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER,
544                 VREG_VOLTAGE_SMPS_4030);
545
546         return vsel * 12500 + 600000;
547 }
548
549 static struct regulator_ops twl4030smps_ops = {
550         .set_voltage    = twl4030smps_set_voltage,
551         .get_voltage    = twl4030smps_get_voltage,
552 };
553
554 static int twl6030coresmps_set_voltage(struct regulator_dev *rdev, int min_uV,
555         int max_uV, unsigned *selector)
556 {
557         struct twlreg_info *info = rdev_get_drvdata(rdev);
558
559         if (info->set_voltage)
560                 return info->set_voltage(info->data, min_uV);
561
562         return -ENODEV;
563 }
564
565 static int twl6030coresmps_get_voltage(struct regulator_dev *rdev)
566 {
567         struct twlreg_info *info = rdev_get_drvdata(rdev);
568
569         if (info->get_voltage)
570                 return info->get_voltage(info->data);
571
572         return -ENODEV;
573 }
574
575 static struct regulator_ops twl6030coresmps_ops = {
576         .set_voltage    = twl6030coresmps_set_voltage,
577         .get_voltage    = twl6030coresmps_get_voltage,
578 };
579
580 static int
581 twl6030ldo_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV,
582                        unsigned *selector)
583 {
584         struct twlreg_info      *info = rdev_get_drvdata(rdev);
585         int                     vsel;
586
587         if ((min_uV/1000 < info->min_mV) || (max_uV/1000 > info->max_mV))
588                 return -EDOM;
589
590         /*
591          * Use the below formula to calculate vsel
592          * mV = 1000mv + 100mv * (vsel - 1)
593          */
594         vsel = (min_uV/1000 - 1000)/100 + 1;
595         *selector = vsel;
596         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE, vsel);
597
598 }
599
600 static int twl6030ldo_get_voltage(struct regulator_dev *rdev)
601 {
602         struct twlreg_info      *info = rdev_get_drvdata(rdev);
603         int             vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER,
604                                                                 VREG_VOLTAGE);
605
606         if (vsel < 0)
607                 return vsel;
608
609         /*
610          * Use the below formula to calculate vsel
611          * mV = 1000mv + 100mv * (vsel - 1)
612          */
613         return (1000 + (100 * (vsel - 1))) * 1000;
614 }
615
616 static struct regulator_ops twl6030ldo_ops = {
617         .list_voltage   = regulator_list_voltage_linear,
618
619         .set_voltage    = twl6030ldo_set_voltage,
620         .get_voltage    = twl6030ldo_get_voltage,
621
622         .enable         = twl6030reg_enable,
623         .disable        = twl6030reg_disable,
624         .is_enabled     = twl6030reg_is_enabled,
625         .enable_time    = twl6030reg_enable_time,
626
627         .set_mode       = twl6030reg_set_mode,
628
629         .get_status     = twl6030reg_get_status,
630 };
631
632 /*----------------------------------------------------------------------*/
633
634 /*
635  * Fixed voltage LDOs don't have a VSEL field to update.
636  */
637 static int twlfixed_list_voltage(struct regulator_dev *rdev, unsigned index)
638 {
639         struct twlreg_info      *info = rdev_get_drvdata(rdev);
640
641         return info->min_mV * 1000;
642 }
643
644 static int twlfixed_get_voltage(struct regulator_dev *rdev)
645 {
646         struct twlreg_info      *info = rdev_get_drvdata(rdev);
647
648         return info->min_mV * 1000;
649 }
650
651 static struct regulator_ops twl4030fixed_ops = {
652         .list_voltage   = twlfixed_list_voltage,
653
654         .get_voltage    = twlfixed_get_voltage,
655
656         .enable         = twl4030reg_enable,
657         .disable        = twl4030reg_disable,
658         .is_enabled     = twl4030reg_is_enabled,
659         .enable_time    = twl4030reg_enable_time,
660
661         .set_mode       = twl4030reg_set_mode,
662
663         .get_status     = twl4030reg_get_status,
664 };
665
666 static struct regulator_ops twl6030fixed_ops = {
667         .list_voltage   = twlfixed_list_voltage,
668
669         .get_voltage    = twlfixed_get_voltage,
670
671         .enable         = twl6030reg_enable,
672         .disable        = twl6030reg_disable,
673         .is_enabled     = twl6030reg_is_enabled,
674         .enable_time    = twl6030reg_enable_time,
675
676         .set_mode       = twl6030reg_set_mode,
677
678         .get_status     = twl6030reg_get_status,
679 };
680
681 static struct regulator_ops twl6030_fixed_resource = {
682         .enable         = twl6030reg_enable,
683         .disable        = twl6030reg_disable,
684         .is_enabled     = twl6030reg_is_enabled,
685         .enable_time    = twl6030reg_enable_time,
686         .get_status     = twl6030reg_get_status,
687 };
688
689 /*
690  * SMPS status and control
691  */
692
693 static int twl6030smps_list_voltage(struct regulator_dev *rdev, unsigned index)
694 {
695         struct twlreg_info      *info = rdev_get_drvdata(rdev);
696
697         int voltage = 0;
698
699         switch (info->flags) {
700         case SMPS_OFFSET_EN:
701                 voltage = 100000;
702                 /* fall through */
703         case 0:
704                 switch (index) {
705                 case 0:
706                         voltage = 0;
707                         break;
708                 case 58:
709                         voltage = 1350 * 1000;
710                         break;
711                 case 59:
712                         voltage = 1500 * 1000;
713                         break;
714                 case 60:
715                         voltage = 1800 * 1000;
716                         break;
717                 case 61:
718                         voltage = 1900 * 1000;
719                         break;
720                 case 62:
721                         voltage = 2100 * 1000;
722                         break;
723                 default:
724                         voltage += (600000 + (12500 * (index - 1)));
725                 }
726                 break;
727         case SMPS_EXTENDED_EN:
728                 switch (index) {
729                 case 0:
730                         voltage = 0;
731                         break;
732                 case 58:
733                         voltage = 2084 * 1000;
734                         break;
735                 case 59:
736                         voltage = 2315 * 1000;
737                         break;
738                 case 60:
739                         voltage = 2778 * 1000;
740                         break;
741                 case 61:
742                         voltage = 2932 * 1000;
743                         break;
744                 case 62:
745                         voltage = 3241 * 1000;
746                         break;
747                 default:
748                         voltage = (1852000 + (38600 * (index - 1)));
749                 }
750                 break;
751         case SMPS_OFFSET_EN | SMPS_EXTENDED_EN:
752                 switch (index) {
753                 case 0:
754                         voltage = 0;
755                         break;
756                 case 58:
757                         voltage = 4167 * 1000;
758                         break;
759                 case 59:
760                         voltage = 2315 * 1000;
761                         break;
762                 case 60:
763                         voltage = 2778 * 1000;
764                         break;
765                 case 61:
766                         voltage = 2932 * 1000;
767                         break;
768                 case 62:
769                         voltage = 3241 * 1000;
770                         break;
771                 default:
772                         voltage = (2161000 + (38600 * (index - 1)));
773                 }
774                 break;
775         }
776
777         return voltage;
778 }
779
780 static int
781 twl6030smps_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV,
782                         unsigned int *selector)
783 {
784         struct twlreg_info      *info = rdev_get_drvdata(rdev);
785         int     vsel = 0;
786
787         switch (info->flags) {
788         case 0:
789                 if (min_uV == 0)
790                         vsel = 0;
791                 else if ((min_uV >= 600000) && (min_uV <= 1300000)) {
792                         int calc_uV;
793                         vsel = DIV_ROUND_UP(min_uV - 600000, 12500);
794                         vsel++;
795                         calc_uV = twl6030smps_list_voltage(rdev, vsel);
796                         if (calc_uV > max_uV)
797                                 return -EINVAL;
798                 }
799                 /* Values 1..57 for vsel are linear and can be calculated
800                  * values 58..62 are non linear.
801                  */
802                 else if ((min_uV > 1900000) && (max_uV >= 2100000))
803                         vsel = 62;
804                 else if ((min_uV > 1800000) && (max_uV >= 1900000))
805                         vsel = 61;
806                 else if ((min_uV > 1500000) && (max_uV >= 1800000))
807                         vsel = 60;
808                 else if ((min_uV > 1350000) && (max_uV >= 1500000))
809                         vsel = 59;
810                 else if ((min_uV > 1300000) && (max_uV >= 1350000))
811                         vsel = 58;
812                 else
813                         return -EINVAL;
814                 break;
815         case SMPS_OFFSET_EN:
816                 if (min_uV == 0)
817                         vsel = 0;
818                 else if ((min_uV >= 700000) && (min_uV <= 1420000)) {
819                         int calc_uV;
820                         vsel = DIV_ROUND_UP(min_uV - 700000, 12500);
821                         vsel++;
822                         calc_uV = twl6030smps_list_voltage(rdev, vsel);
823                         if (calc_uV > max_uV)
824                                 return -EINVAL;
825                 }
826                 /* Values 1..57 for vsel are linear and can be calculated
827                  * values 58..62 are non linear.
828                  */
829                 else if ((min_uV > 1900000) && (max_uV >= 2100000))
830                         vsel = 62;
831                 else if ((min_uV > 1800000) && (max_uV >= 1900000))
832                         vsel = 61;
833                 else if ((min_uV > 1350000) && (max_uV >= 1800000))
834                         vsel = 60;
835                 else if ((min_uV > 1350000) && (max_uV >= 1500000))
836                         vsel = 59;
837                 else if ((min_uV > 1300000) && (max_uV >= 1350000))
838                         vsel = 58;
839                 else
840                         return -EINVAL;
841                 break;
842         case SMPS_EXTENDED_EN:
843                 if (min_uV == 0) {
844                         vsel = 0;
845                 } else if ((min_uV >= 1852000) && (max_uV <= 4013600)) {
846                         vsel = DIV_ROUND_UP(min_uV - 1852000, 38600);
847                         vsel++;
848                 }
849                 break;
850         case SMPS_OFFSET_EN|SMPS_EXTENDED_EN:
851                 if (min_uV == 0) {
852                         vsel = 0;
853                 } else if ((min_uV >= 2161000) && (max_uV <= 4321000)) {
854                         vsel = DIV_ROUND_UP(min_uV - 2161000, 38600);
855                         vsel++;
856                 }
857                 break;
858         }
859
860         *selector = vsel;
861
862         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS,
863                                                         vsel);
864 }
865
866 static int twl6030smps_get_voltage_sel(struct regulator_dev *rdev)
867 {
868         struct twlreg_info      *info = rdev_get_drvdata(rdev);
869
870         return twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS);
871 }
872
873 static struct regulator_ops twlsmps_ops = {
874         .list_voltage           = twl6030smps_list_voltage,
875
876         .set_voltage            = twl6030smps_set_voltage,
877         .get_voltage_sel        = twl6030smps_get_voltage_sel,
878
879         .enable                 = twl6030reg_enable,
880         .disable                = twl6030reg_disable,
881         .is_enabled             = twl6030reg_is_enabled,
882         .enable_time            = twl6030reg_enable_time,
883
884         .set_mode               = twl6030reg_set_mode,
885
886         .get_status             = twl6030reg_get_status,
887 };
888
889 /*----------------------------------------------------------------------*/
890
891 #define TWL4030_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
892                         remap_conf) \
893                 TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
894                         remap_conf, TWL4030, twl4030fixed_ops)
895 #define TWL6030_FIXED_LDO(label, offset, mVolts, turnon_delay) \
896                 TWL_FIXED_LDO(label, offset, mVolts, 0x0, turnon_delay, \
897                         0x0, TWL6030, twl6030fixed_ops)
898
899 #define TWL4030_ADJUSTABLE_LDO(label, offset, num, turnon_delay, remap_conf) \
900 static struct twlreg_info TWL4030_INFO_##label = { \
901         .base = offset, \
902         .id = num, \
903         .table_len = ARRAY_SIZE(label##_VSEL_table), \
904         .table = label##_VSEL_table, \
905         .delay = turnon_delay, \
906         .remap = remap_conf, \
907         .desc = { \
908                 .name = #label, \
909                 .id = TWL4030_REG_##label, \
910                 .n_voltages = ARRAY_SIZE(label##_VSEL_table), \
911                 .ops = &twl4030ldo_ops, \
912                 .type = REGULATOR_VOLTAGE, \
913                 .owner = THIS_MODULE, \
914                 }, \
915         }
916
917 #define TWL4030_ADJUSTABLE_SMPS(label, offset, num, turnon_delay, remap_conf) \
918 static struct twlreg_info TWL4030_INFO_##label = { \
919         .base = offset, \
920         .id = num, \
921         .delay = turnon_delay, \
922         .remap = remap_conf, \
923         .desc = { \
924                 .name = #label, \
925                 .id = TWL4030_REG_##label, \
926                 .ops = &twl4030smps_ops, \
927                 .type = REGULATOR_VOLTAGE, \
928                 .owner = THIS_MODULE, \
929                 }, \
930         }
931
932 #define TWL6030_ADJUSTABLE_SMPS(label) \
933 static struct twlreg_info TWL6030_INFO_##label = { \
934         .desc = { \
935                 .name = #label, \
936                 .id = TWL6030_REG_##label, \
937                 .ops = &twl6030coresmps_ops, \
938                 .type = REGULATOR_VOLTAGE, \
939                 .owner = THIS_MODULE, \
940                 }, \
941         }
942
943 #define TWL6030_ADJUSTABLE_LDO(label, offset, min_mVolts, max_mVolts) \
944 static struct twlreg_info TWL6030_INFO_##label = { \
945         .base = offset, \
946         .min_mV = min_mVolts, \
947         .max_mV = max_mVolts, \
948         .desc = { \
949                 .name = #label, \
950                 .id = TWL6030_REG_##label, \
951                 .n_voltages = (max_mVolts - min_mVolts)/100 + 1, \
952                 .ops = &twl6030ldo_ops, \
953                 .type = REGULATOR_VOLTAGE, \
954                 .owner = THIS_MODULE, \
955                 .min_uV = min_mVolts * 1000, \
956                 .uV_step = 100 * 1000, \
957                 }, \
958         }
959
960 #define TWL6025_ADJUSTABLE_LDO(label, offset, min_mVolts, max_mVolts) \
961 static struct twlreg_info TWL6025_INFO_##label = { \
962         .base = offset, \
963         .min_mV = min_mVolts, \
964         .max_mV = max_mVolts, \
965         .desc = { \
966                 .name = #label, \
967                 .id = TWL6025_REG_##label, \
968                 .n_voltages = ((max_mVolts - min_mVolts)/100) + 1, \
969                 .ops = &twl6030ldo_ops, \
970                 .type = REGULATOR_VOLTAGE, \
971                 .owner = THIS_MODULE, \
972                 .min_uV = min_mVolts * 1000, \
973                 .uV_step = 100 * 1000, \
974                 }, \
975         }
976
977 #define TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, remap_conf, \
978                 family, operations) \
979 static struct twlreg_info TWLFIXED_INFO_##label = { \
980         .base = offset, \
981         .id = num, \
982         .min_mV = mVolts, \
983         .delay = turnon_delay, \
984         .remap = remap_conf, \
985         .desc = { \
986                 .name = #label, \
987                 .id = family##_REG_##label, \
988                 .n_voltages = 1, \
989                 .ops = &operations, \
990                 .type = REGULATOR_VOLTAGE, \
991                 .owner = THIS_MODULE, \
992                 }, \
993         }
994
995 #define TWL6030_FIXED_RESOURCE(label, offset, turnon_delay) \
996 static struct twlreg_info TWLRES_INFO_##label = { \
997         .base = offset, \
998         .delay = turnon_delay, \
999         .desc = { \
1000                 .name = #label, \
1001                 .id = TWL6030_REG_##label, \
1002                 .ops = &twl6030_fixed_resource, \
1003                 .type = REGULATOR_VOLTAGE, \
1004                 .owner = THIS_MODULE, \
1005                 }, \
1006         }
1007
1008 #define TWL6025_ADJUSTABLE_SMPS(label, offset) \
1009 static struct twlreg_info TWLSMPS_INFO_##label = { \
1010         .base = offset, \
1011         .min_mV = 600, \
1012         .max_mV = 2100, \
1013         .desc = { \
1014                 .name = #label, \
1015                 .id = TWL6025_REG_##label, \
1016                 .n_voltages = 63, \
1017                 .ops = &twlsmps_ops, \
1018                 .type = REGULATOR_VOLTAGE, \
1019                 .owner = THIS_MODULE, \
1020                 }, \
1021         }
1022
1023 /*
1024  * We list regulators here if systems need some level of
1025  * software control over them after boot.
1026  */
1027 TWL4030_ADJUSTABLE_LDO(VAUX1, 0x17, 1, 100, 0x08);
1028 TWL4030_ADJUSTABLE_LDO(VAUX2_4030, 0x1b, 2, 100, 0x08);
1029 TWL4030_ADJUSTABLE_LDO(VAUX2, 0x1b, 2, 100, 0x08);
1030 TWL4030_ADJUSTABLE_LDO(VAUX3, 0x1f, 3, 100, 0x08);
1031 TWL4030_ADJUSTABLE_LDO(VAUX4, 0x23, 4, 100, 0x08);
1032 TWL4030_ADJUSTABLE_LDO(VMMC1, 0x27, 5, 100, 0x08);
1033 TWL4030_ADJUSTABLE_LDO(VMMC2, 0x2b, 6, 100, 0x08);
1034 TWL4030_ADJUSTABLE_LDO(VPLL1, 0x2f, 7, 100, 0x00);
1035 TWL4030_ADJUSTABLE_LDO(VPLL2, 0x33, 8, 100, 0x08);
1036 TWL4030_ADJUSTABLE_LDO(VSIM, 0x37, 9, 100, 0x00);
1037 TWL4030_ADJUSTABLE_LDO(VDAC, 0x3b, 10, 100, 0x08);
1038 TWL4030_ADJUSTABLE_LDO(VINTANA2, 0x43, 12, 100, 0x08);
1039 TWL4030_ADJUSTABLE_LDO(VIO, 0x4b, 14, 1000, 0x08);
1040 TWL4030_ADJUSTABLE_SMPS(VDD1, 0x55, 15, 1000, 0x08);
1041 TWL4030_ADJUSTABLE_SMPS(VDD2, 0x63, 16, 1000, 0x08);
1042 /* VUSBCP is managed *only* by the USB subchip */
1043 /* 6030 REG with base as PMC Slave Misc : 0x0030 */
1044 /* Turnon-delay and remap configuration values for 6030 are not
1045    verified since the specification is not public */
1046 TWL6030_ADJUSTABLE_SMPS(VDD1);
1047 TWL6030_ADJUSTABLE_SMPS(VDD2);
1048 TWL6030_ADJUSTABLE_SMPS(VDD3);
1049 TWL6030_ADJUSTABLE_LDO(VAUX1_6030, 0x54, 1000, 3300);
1050 TWL6030_ADJUSTABLE_LDO(VAUX2_6030, 0x58, 1000, 3300);
1051 TWL6030_ADJUSTABLE_LDO(VAUX3_6030, 0x5c, 1000, 3300);
1052 TWL6030_ADJUSTABLE_LDO(VMMC, 0x68, 1000, 3300);
1053 TWL6030_ADJUSTABLE_LDO(VPP, 0x6c, 1000, 3300);
1054 TWL6030_ADJUSTABLE_LDO(VUSIM, 0x74, 1000, 3300);
1055 /* 6025 are renamed compared to 6030 versions */
1056 TWL6025_ADJUSTABLE_LDO(LDO2, 0x54, 1000, 3300);
1057 TWL6025_ADJUSTABLE_LDO(LDO4, 0x58, 1000, 3300);
1058 TWL6025_ADJUSTABLE_LDO(LDO3, 0x5c, 1000, 3300);
1059 TWL6025_ADJUSTABLE_LDO(LDO5, 0x68, 1000, 3300);
1060 TWL6025_ADJUSTABLE_LDO(LDO1, 0x6c, 1000, 3300);
1061 TWL6025_ADJUSTABLE_LDO(LDO7, 0x74, 1000, 3300);
1062 TWL6025_ADJUSTABLE_LDO(LDO6, 0x60, 1000, 3300);
1063 TWL6025_ADJUSTABLE_LDO(LDOLN, 0x64, 1000, 3300);
1064 TWL6025_ADJUSTABLE_LDO(LDOUSB, 0x70, 1000, 3300);
1065 TWL4030_FIXED_LDO(VINTANA2, 0x3f, 1500, 11, 100, 0x08);
1066 TWL4030_FIXED_LDO(VINTDIG, 0x47, 1500, 13, 100, 0x08);
1067 TWL4030_FIXED_LDO(VUSB1V5, 0x71, 1500, 17, 100, 0x08);
1068 TWL4030_FIXED_LDO(VUSB1V8, 0x74, 1800, 18, 100, 0x08);
1069 TWL4030_FIXED_LDO(VUSB3V1, 0x77, 3100, 19, 150, 0x08);
1070 TWL6030_FIXED_LDO(VANA, 0x50, 2100, 0);
1071 TWL6030_FIXED_LDO(VCXIO, 0x60, 1800, 0);
1072 TWL6030_FIXED_LDO(VDAC, 0x64, 1800, 0);
1073 TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 0);
1074 TWL6030_FIXED_LDO(V1V8, 0x16, 1800, 0);
1075 TWL6030_FIXED_LDO(V2V1, 0x1c, 2100, 0);
1076 TWL6030_FIXED_RESOURCE(CLK32KG, 0x8C, 0);
1077 TWL6025_ADJUSTABLE_SMPS(SMPS3, 0x34);
1078 TWL6025_ADJUSTABLE_SMPS(SMPS4, 0x10);
1079 TWL6025_ADJUSTABLE_SMPS(VIO, 0x16);
1080
1081 static u8 twl_get_smps_offset(void)
1082 {
1083         u8 value;
1084
1085         twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
1086                         TWL6030_SMPS_OFFSET);
1087         return value;
1088 }
1089
1090 static u8 twl_get_smps_mult(void)
1091 {
1092         u8 value;
1093
1094         twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
1095                         TWL6030_SMPS_MULT);
1096         return value;
1097 }
1098
1099 #define TWL_OF_MATCH(comp, family, label) \
1100         { \
1101                 .compatible = comp, \
1102                 .data = &family##_INFO_##label, \
1103         }
1104
1105 #define TWL4030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL4030, label)
1106 #define TWL6030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6030, label)
1107 #define TWL6025_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6025, label)
1108 #define TWLFIXED_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLFIXED, label)
1109 #define TWLSMPS_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLSMPS, label)
1110
1111 static const struct of_device_id twl_of_match[] __devinitconst = {
1112         TWL4030_OF_MATCH("ti,twl4030-vaux1", VAUX1),
1113         TWL4030_OF_MATCH("ti,twl4030-vaux2", VAUX2_4030),
1114         TWL4030_OF_MATCH("ti,twl5030-vaux2", VAUX2),
1115         TWL4030_OF_MATCH("ti,twl4030-vaux3", VAUX3),
1116         TWL4030_OF_MATCH("ti,twl4030-vaux4", VAUX4),
1117         TWL4030_OF_MATCH("ti,twl4030-vmmc1", VMMC1),
1118         TWL4030_OF_MATCH("ti,twl4030-vmmc2", VMMC2),
1119         TWL4030_OF_MATCH("ti,twl4030-vpll1", VPLL1),
1120         TWL4030_OF_MATCH("ti,twl4030-vpll2", VPLL2),
1121         TWL4030_OF_MATCH("ti,twl4030-vsim", VSIM),
1122         TWL4030_OF_MATCH("ti,twl4030-vdac", VDAC),
1123         TWL4030_OF_MATCH("ti,twl4030-vintana2", VINTANA2),
1124         TWL4030_OF_MATCH("ti,twl4030-vio", VIO),
1125         TWL4030_OF_MATCH("ti,twl4030-vdd1", VDD1),
1126         TWL4030_OF_MATCH("ti,twl4030-vdd2", VDD2),
1127         TWL6030_OF_MATCH("ti,twl6030-vdd1", VDD1),
1128         TWL6030_OF_MATCH("ti,twl6030-vdd2", VDD2),
1129         TWL6030_OF_MATCH("ti,twl6030-vdd3", VDD3),
1130         TWL6030_OF_MATCH("ti,twl6030-vaux1", VAUX1_6030),
1131         TWL6030_OF_MATCH("ti,twl6030-vaux2", VAUX2_6030),
1132         TWL6030_OF_MATCH("ti,twl6030-vaux3", VAUX3_6030),
1133         TWL6030_OF_MATCH("ti,twl6030-vmmc", VMMC),
1134         TWL6030_OF_MATCH("ti,twl6030-vpp", VPP),
1135         TWL6030_OF_MATCH("ti,twl6030-vusim", VUSIM),
1136         TWL6025_OF_MATCH("ti,twl6025-ldo2", LDO2),
1137         TWL6025_OF_MATCH("ti,twl6025-ldo4", LDO4),
1138         TWL6025_OF_MATCH("ti,twl6025-ldo3", LDO3),
1139         TWL6025_OF_MATCH("ti,twl6025-ldo5", LDO5),
1140         TWL6025_OF_MATCH("ti,twl6025-ldo1", LDO1),
1141         TWL6025_OF_MATCH("ti,twl6025-ldo7", LDO7),
1142         TWL6025_OF_MATCH("ti,twl6025-ldo6", LDO6),
1143         TWL6025_OF_MATCH("ti,twl6025-ldoln", LDOLN),
1144         TWL6025_OF_MATCH("ti,twl6025-ldousb", LDOUSB),
1145         TWLFIXED_OF_MATCH("ti,twl4030-vintana2", VINTANA2),
1146         TWLFIXED_OF_MATCH("ti,twl4030-vintdig", VINTDIG),
1147         TWLFIXED_OF_MATCH("ti,twl4030-vusb1v5", VUSB1V5),
1148         TWLFIXED_OF_MATCH("ti,twl4030-vusb1v8", VUSB1V8),
1149         TWLFIXED_OF_MATCH("ti,twl4030-vusb3v1", VUSB3V1),
1150         TWLFIXED_OF_MATCH("ti,twl6030-vana", VANA),
1151         TWLFIXED_OF_MATCH("ti,twl6030-vcxio", VCXIO),
1152         TWLFIXED_OF_MATCH("ti,twl6030-vdac", VDAC),
1153         TWLFIXED_OF_MATCH("ti,twl6030-vusb", VUSB),
1154         TWLFIXED_OF_MATCH("ti,twl6030-v1v8", V1V8),
1155         TWLFIXED_OF_MATCH("ti,twl6030-v2v1", V2V1),
1156         TWLSMPS_OF_MATCH("ti,twl6025-smps3", SMPS3),
1157         TWLSMPS_OF_MATCH("ti,twl6025-smps4", SMPS4),
1158         TWLSMPS_OF_MATCH("ti,twl6025-vio", VIO),
1159         {},
1160 };
1161 MODULE_DEVICE_TABLE(of, twl_of_match);
1162
1163 static int __devinit twlreg_probe(struct platform_device *pdev)
1164 {
1165         int                             i, id;
1166         struct twlreg_info              *info;
1167         struct regulator_init_data      *initdata;
1168         struct regulation_constraints   *c;
1169         struct regulator_dev            *rdev;
1170         struct twl_regulator_driver_data        *drvdata;
1171         const struct of_device_id       *match;
1172         struct regulator_config         config = { };
1173
1174         match = of_match_device(twl_of_match, &pdev->dev);
1175         if (match) {
1176                 info = match->data;
1177                 id = info->desc.id;
1178                 initdata = of_get_regulator_init_data(&pdev->dev,
1179                                                       pdev->dev.of_node);
1180                 drvdata = NULL;
1181         } else {
1182                 id = pdev->id;
1183                 initdata = pdev->dev.platform_data;
1184                 for (i = 0, info = NULL; i < ARRAY_SIZE(twl_of_match); i++) {
1185                         info = twl_of_match[i].data;
1186                         if (info && info->desc.id == id)
1187                                 break;
1188                 }
1189                 if (i == ARRAY_SIZE(twl_of_match))
1190                         return -ENODEV;
1191
1192                 drvdata = initdata->driver_data;
1193                 if (!drvdata)
1194                         return -EINVAL;
1195         }
1196
1197         if (!info)
1198                 return -ENODEV;
1199
1200         if (!initdata)
1201                 return -EINVAL;
1202
1203         if (drvdata) {
1204                 /* copy the driver data into regulator data */
1205                 info->features = drvdata->features;
1206                 info->data = drvdata->data;
1207                 info->set_voltage = drvdata->set_voltage;
1208                 info->get_voltage = drvdata->get_voltage;
1209         }
1210
1211         /* Constrain board-specific capabilities according to what
1212          * this driver and the chip itself can actually do.
1213          */
1214         c = &initdata->constraints;
1215         c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY;
1216         c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE
1217                                 | REGULATOR_CHANGE_MODE
1218                                 | REGULATOR_CHANGE_STATUS;
1219         switch (id) {
1220         case TWL4030_REG_VIO:
1221         case TWL4030_REG_VDD1:
1222         case TWL4030_REG_VDD2:
1223         case TWL4030_REG_VPLL1:
1224         case TWL4030_REG_VINTANA1:
1225         case TWL4030_REG_VINTANA2:
1226         case TWL4030_REG_VINTDIG:
1227                 c->always_on = true;
1228                 break;
1229         default:
1230                 break;
1231         }
1232
1233         switch (id) {
1234         case TWL6025_REG_SMPS3:
1235                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS3)
1236                         info->flags |= SMPS_EXTENDED_EN;
1237                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS3)
1238                         info->flags |= SMPS_OFFSET_EN;
1239                 break;
1240         case TWL6025_REG_SMPS4:
1241                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS4)
1242                         info->flags |= SMPS_EXTENDED_EN;
1243                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS4)
1244                         info->flags |= SMPS_OFFSET_EN;
1245                 break;
1246         case TWL6025_REG_VIO:
1247                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_VIO)
1248                         info->flags |= SMPS_EXTENDED_EN;
1249                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_VIO)
1250                         info->flags |= SMPS_OFFSET_EN;
1251                 break;
1252         }
1253
1254         config.dev = &pdev->dev;
1255         config.init_data = initdata;
1256         config.driver_data = info;
1257         config.of_node = pdev->dev.of_node;
1258
1259         rdev = regulator_register(&info->desc, &config);
1260         if (IS_ERR(rdev)) {
1261                 dev_err(&pdev->dev, "can't register %s, %ld\n",
1262                                 info->desc.name, PTR_ERR(rdev));
1263                 return PTR_ERR(rdev);
1264         }
1265         platform_set_drvdata(pdev, rdev);
1266
1267         if (twl_class_is_4030())
1268                 twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_REMAP,
1269                                                 info->remap);
1270
1271         /* NOTE:  many regulators support short-circuit IRQs (presentable
1272          * as REGULATOR_OVER_CURRENT notifications?) configured via:
1273          *  - SC_CONFIG
1274          *  - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4)
1275          *  - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2)
1276          *  - IT_CONFIG
1277          */
1278
1279         return 0;
1280 }
1281
1282 static int __devexit twlreg_remove(struct platform_device *pdev)
1283 {
1284         regulator_unregister(platform_get_drvdata(pdev));
1285         return 0;
1286 }
1287
1288 MODULE_ALIAS("platform:twl_reg");
1289
1290 static struct platform_driver twlreg_driver = {
1291         .probe          = twlreg_probe,
1292         .remove         = __devexit_p(twlreg_remove),
1293         /* NOTE: short name, to work around driver model truncation of
1294          * "twl_regulator.12" (and friends) to "twl_regulator.1".
1295          */
1296         .driver  = {
1297                 .name  = "twl_reg",
1298                 .owner = THIS_MODULE,
1299                 .of_match_table = of_match_ptr(twl_of_match),
1300         },
1301 };
1302
1303 static int __init twlreg_init(void)
1304 {
1305         return platform_driver_register(&twlreg_driver);
1306 }
1307 subsys_initcall(twlreg_init);
1308
1309 static void __exit twlreg_exit(void)
1310 {
1311         platform_driver_unregister(&twlreg_driver);
1312 }
1313 module_exit(twlreg_exit)
1314
1315 MODULE_DESCRIPTION("TWL regulator driver");
1316 MODULE_LICENSE("GPL");