regulator: twl-regulator: Simplify the code matching regulator id
[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/delay.h>
16 #include <linux/platform_device.h>
17 #include <linux/of.h>
18 #include <linux/of_device.h>
19 #include <linux/regulator/driver.h>
20 #include <linux/regulator/machine.h>
21 #include <linux/regulator/of_regulator.h>
22 #include <linux/i2c/twl.h>
23
24
25 /*
26  * The TWL4030/TW5030/TPS659x0/TWL6030 family chips include power management, a
27  * USB OTG transceiver, an RTC, ADC, PWM, and lots more.  Some versions
28  * include an audio codec, battery charger, and more voltage regulators.
29  * These chips are often used in OMAP-based systems.
30  *
31  * This driver implements software-based resource control for various
32  * voltage regulators.  This is usually augmented with state machine
33  * based control.
34  */
35
36 struct twlreg_info {
37         /* start of regulator's PM_RECEIVER control register bank */
38         u8                      base;
39
40         /* twl resource ID, for resource control state machine */
41         u8                      id;
42
43         /* voltage in mV = table[VSEL]; table_len must be a power-of-two */
44         u8                      table_len;
45         const u16               *table;
46
47         /* regulator specific turn-on delay */
48         u16                     delay;
49
50         /* State REMAP default configuration */
51         u8                      remap;
52
53         /* chip constraints on regulator behavior */
54         u16                     min_mV;
55         u16                     max_mV;
56
57         u8                      flags;
58
59         /* used by regulator core */
60         struct regulator_desc   desc;
61
62         /* chip specific features */
63         unsigned long           features;
64
65         /*
66          * optional override functions for voltage set/get
67          * these are currently only used for SMPS regulators
68          */
69         int                     (*get_voltage)(void *data);
70         int                     (*set_voltage)(void *data, int target_uV);
71
72         /* data passed from board for external get/set voltage */
73         void                    *data;
74 };
75
76
77 /* LDO control registers ... offset is from the base of its register bank.
78  * The first three registers of all power resource banks help hardware to
79  * manage the various resource groups.
80  */
81 /* Common offset in TWL4030/6030 */
82 #define VREG_GRP                0
83 /* TWL4030 register offsets */
84 #define VREG_TYPE               1
85 #define VREG_REMAP              2
86 #define VREG_DEDICATED          3       /* LDO control */
87 #define VREG_VOLTAGE_SMPS_4030  9
88 /* TWL6030 register offsets */
89 #define VREG_TRANS              1
90 #define VREG_STATE              2
91 #define VREG_VOLTAGE            3
92 #define VREG_VOLTAGE_SMPS       4
93 /* TWL6030 Misc register offsets */
94 #define VREG_BC_ALL             1
95 #define VREG_BC_REF             2
96 #define VREG_BC_PROC            3
97 #define VREG_BC_CLK_RST         4
98
99 /* TWL6030 LDO register values for CFG_STATE */
100 #define TWL6030_CFG_STATE_OFF   0x00
101 #define TWL6030_CFG_STATE_ON    0x01
102 #define TWL6030_CFG_STATE_OFF2  0x02
103 #define TWL6030_CFG_STATE_SLEEP 0x03
104 #define TWL6030_CFG_STATE_GRP_SHIFT     5
105 #define TWL6030_CFG_STATE_APP_SHIFT     2
106 #define TWL6030_CFG_STATE_APP_MASK      (0x03 << TWL6030_CFG_STATE_APP_SHIFT)
107 #define TWL6030_CFG_STATE_APP(v)        (((v) & TWL6030_CFG_STATE_APP_MASK) >>\
108                                                 TWL6030_CFG_STATE_APP_SHIFT)
109
110 /* Flags for SMPS Voltage reading */
111 #define SMPS_OFFSET_EN          BIT(0)
112 #define SMPS_EXTENDED_EN        BIT(1)
113
114 /* twl6025 SMPS EPROM values */
115 #define TWL6030_SMPS_OFFSET             0xB0
116 #define TWL6030_SMPS_MULT               0xB3
117 #define SMPS_MULTOFFSET_SMPS4   BIT(0)
118 #define SMPS_MULTOFFSET_VIO     BIT(1)
119 #define SMPS_MULTOFFSET_SMPS3   BIT(6)
120
121 static inline int
122 twlreg_read(struct twlreg_info *info, unsigned slave_subgp, unsigned offset)
123 {
124         u8 value;
125         int status;
126
127         status = twl_i2c_read_u8(slave_subgp,
128                         &value, info->base + offset);
129         return (status < 0) ? status : value;
130 }
131
132 static inline int
133 twlreg_write(struct twlreg_info *info, unsigned slave_subgp, unsigned offset,
134                                                  u8 value)
135 {
136         return twl_i2c_write_u8(slave_subgp,
137                         value, info->base + offset);
138 }
139
140 /*----------------------------------------------------------------------*/
141
142 /* generic power resource operations, which work on all regulators */
143
144 static int twlreg_grp(struct regulator_dev *rdev)
145 {
146         return twlreg_read(rdev_get_drvdata(rdev), TWL_MODULE_PM_RECEIVER,
147                                                                  VREG_GRP);
148 }
149
150 /*
151  * Enable/disable regulators by joining/leaving the P1 (processor) group.
152  * We assume nobody else is updating the DEV_GRP registers.
153  */
154 /* definition for 4030 family */
155 #define P3_GRP_4030     BIT(7)          /* "peripherals" */
156 #define P2_GRP_4030     BIT(6)          /* secondary processor, modem, etc */
157 #define P1_GRP_4030     BIT(5)          /* CPU/Linux */
158 /* definition for 6030 family */
159 #define P3_GRP_6030     BIT(2)          /* secondary processor, modem, etc */
160 #define P2_GRP_6030     BIT(1)          /* "peripherals" */
161 #define P1_GRP_6030     BIT(0)          /* CPU/Linux */
162
163 static int twl4030reg_is_enabled(struct regulator_dev *rdev)
164 {
165         int     state = twlreg_grp(rdev);
166
167         if (state < 0)
168                 return state;
169
170         return state & P1_GRP_4030;
171 }
172
173 static int twl6030reg_is_enabled(struct regulator_dev *rdev)
174 {
175         struct twlreg_info      *info = rdev_get_drvdata(rdev);
176         int                     grp = 0, val;
177
178         if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS)))
179                 grp = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_GRP);
180         if (grp < 0)
181                 return grp;
182
183         if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS)))
184                 grp &= P1_GRP_6030;
185         else
186                 grp = 1;
187
188         val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
189         val = TWL6030_CFG_STATE_APP(val);
190
191         return grp && (val == TWL6030_CFG_STATE_ON);
192 }
193
194 static int twl4030reg_enable(struct regulator_dev *rdev)
195 {
196         struct twlreg_info      *info = rdev_get_drvdata(rdev);
197         int                     grp;
198         int                     ret;
199
200         grp = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_GRP);
201         if (grp < 0)
202                 return grp;
203
204         grp |= P1_GRP_4030;
205
206         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp);
207
208         udelay(info->delay);
209
210         return ret;
211 }
212
213 static int twl6030reg_enable(struct regulator_dev *rdev)
214 {
215         struct twlreg_info      *info = rdev_get_drvdata(rdev);
216         int                     grp = 0;
217         int                     ret;
218
219         if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS)))
220                 grp = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_GRP);
221         if (grp < 0)
222                 return grp;
223
224         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
225                         grp << TWL6030_CFG_STATE_GRP_SHIFT |
226                         TWL6030_CFG_STATE_ON);
227
228         udelay(info->delay);
229
230         return ret;
231 }
232
233 static int twl4030reg_disable(struct regulator_dev *rdev)
234 {
235         struct twlreg_info      *info = rdev_get_drvdata(rdev);
236         int                     grp;
237         int                     ret;
238
239         grp = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_GRP);
240         if (grp < 0)
241                 return grp;
242
243         grp &= ~(P1_GRP_4030 | P2_GRP_4030 | P3_GRP_4030);
244
245         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp);
246
247         return ret;
248 }
249
250 static int twl6030reg_disable(struct regulator_dev *rdev)
251 {
252         struct twlreg_info      *info = rdev_get_drvdata(rdev);
253         int                     grp = 0;
254         int                     ret;
255
256         if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS)))
257                 grp = P1_GRP_6030 | P2_GRP_6030 | P3_GRP_6030;
258
259         /* For 6030, set the off state for all grps enabled */
260         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
261                         (grp) << TWL6030_CFG_STATE_GRP_SHIFT |
262                         TWL6030_CFG_STATE_OFF);
263
264         return ret;
265 }
266
267 static int twl4030reg_get_status(struct regulator_dev *rdev)
268 {
269         int     state = twlreg_grp(rdev);
270
271         if (state < 0)
272                 return state;
273         state &= 0x0f;
274
275         /* assume state != WARM_RESET; we'd not be running...  */
276         if (!state)
277                 return REGULATOR_STATUS_OFF;
278         return (state & BIT(3))
279                 ? REGULATOR_STATUS_NORMAL
280                 : REGULATOR_STATUS_STANDBY;
281 }
282
283 static int twl6030reg_get_status(struct regulator_dev *rdev)
284 {
285         struct twlreg_info      *info = rdev_get_drvdata(rdev);
286         int                     val;
287
288         val = twlreg_grp(rdev);
289         if (val < 0)
290                 return val;
291
292         val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
293
294         switch (TWL6030_CFG_STATE_APP(val)) {
295         case TWL6030_CFG_STATE_ON:
296                 return REGULATOR_STATUS_NORMAL;
297
298         case TWL6030_CFG_STATE_SLEEP:
299                 return REGULATOR_STATUS_STANDBY;
300
301         case TWL6030_CFG_STATE_OFF:
302         case TWL6030_CFG_STATE_OFF2:
303         default:
304                 break;
305         }
306
307         return REGULATOR_STATUS_OFF;
308 }
309
310 static int twl4030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
311 {
312         struct twlreg_info      *info = rdev_get_drvdata(rdev);
313         unsigned                message;
314         int                     status;
315
316         /* We can only set the mode through state machine commands... */
317         switch (mode) {
318         case REGULATOR_MODE_NORMAL:
319                 message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_ACTIVE);
320                 break;
321         case REGULATOR_MODE_STANDBY:
322                 message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_SLEEP);
323                 break;
324         default:
325                 return -EINVAL;
326         }
327
328         /* Ensure the resource is associated with some group */
329         status = twlreg_grp(rdev);
330         if (status < 0)
331                 return status;
332         if (!(status & (P3_GRP_4030 | P2_GRP_4030 | P1_GRP_4030)))
333                 return -EACCES;
334
335         status = twl_i2c_write_u8(TWL_MODULE_PM_MASTER,
336                         message >> 8, TWL4030_PM_MASTER_PB_WORD_MSB);
337         if (status < 0)
338                 return status;
339
340         return twl_i2c_write_u8(TWL_MODULE_PM_MASTER,
341                         message & 0xff, TWL4030_PM_MASTER_PB_WORD_LSB);
342 }
343
344 static int twl6030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
345 {
346         struct twlreg_info      *info = rdev_get_drvdata(rdev);
347         int grp = 0;
348         int val;
349
350         if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS)))
351                 grp = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_GRP);
352
353         if (grp < 0)
354                 return grp;
355
356         /* Compose the state register settings */
357         val = grp << TWL6030_CFG_STATE_GRP_SHIFT;
358         /* We can only set the mode through state machine commands... */
359         switch (mode) {
360         case REGULATOR_MODE_NORMAL:
361                 val |= TWL6030_CFG_STATE_ON;
362                 break;
363         case REGULATOR_MODE_STANDBY:
364                 val |= TWL6030_CFG_STATE_SLEEP;
365                 break;
366
367         default:
368                 return -EINVAL;
369         }
370
371         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, val);
372 }
373
374 /*----------------------------------------------------------------------*/
375
376 /*
377  * Support for adjustable-voltage LDOs uses a four bit (or less) voltage
378  * select field in its control register.   We use tables indexed by VSEL
379  * to record voltages in milliVolts.  (Accuracy is about three percent.)
380  *
381  * Note that VSEL values for VAUX2 changed in twl5030 and newer silicon;
382  * currently handled by listing two slightly different VAUX2 regulators,
383  * only one of which will be configured.
384  *
385  * VSEL values documented as "TI cannot support these values" are flagged
386  * in these tables as UNSUP() values; we normally won't assign them.
387  *
388  * VAUX3 at 3V is incorrectly listed in some TI manuals as unsupported.
389  * TI are revising the twl5030/tps659x0 specs to support that 3.0V setting.
390  */
391 #ifdef CONFIG_TWL4030_ALLOW_UNSUPPORTED
392 #define UNSUP_MASK      0x0000
393 #else
394 #define UNSUP_MASK      0x8000
395 #endif
396
397 #define UNSUP(x)        (UNSUP_MASK | (x))
398 #define IS_UNSUP(x)     (UNSUP_MASK & (x))
399 #define LDO_MV(x)       (~UNSUP_MASK & (x))
400
401
402 static const u16 VAUX1_VSEL_table[] = {
403         UNSUP(1500), UNSUP(1800), 2500, 2800,
404         3000, 3000, 3000, 3000,
405 };
406 static const u16 VAUX2_4030_VSEL_table[] = {
407         UNSUP(1000), UNSUP(1000), UNSUP(1200), 1300,
408         1500, 1800, UNSUP(1850), 2500,
409         UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000),
410         UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
411 };
412 static const u16 VAUX2_VSEL_table[] = {
413         1700, 1700, 1900, 1300,
414         1500, 1800, 2000, 2500,
415         2100, 2800, 2200, 2300,
416         2400, 2400, 2400, 2400,
417 };
418 static const u16 VAUX3_VSEL_table[] = {
419         1500, 1800, 2500, 2800,
420         3000, 3000, 3000, 3000,
421 };
422 static const u16 VAUX4_VSEL_table[] = {
423         700, 1000, 1200, UNSUP(1300),
424         1500, 1800, UNSUP(1850), 2500,
425         UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000),
426         UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
427 };
428 static const u16 VMMC1_VSEL_table[] = {
429         1850, 2850, 3000, 3150,
430 };
431 static const u16 VMMC2_VSEL_table[] = {
432         UNSUP(1000), UNSUP(1000), UNSUP(1200), UNSUP(1300),
433         UNSUP(1500), UNSUP(1800), 1850, UNSUP(2500),
434         2600, 2800, 2850, 3000,
435         3150, 3150, 3150, 3150,
436 };
437 static const u16 VPLL1_VSEL_table[] = {
438         1000, 1200, 1300, 1800,
439         UNSUP(2800), UNSUP(3000), UNSUP(3000), UNSUP(3000),
440 };
441 static const u16 VPLL2_VSEL_table[] = {
442         700, 1000, 1200, 1300,
443         UNSUP(1500), 1800, UNSUP(1850), UNSUP(2500),
444         UNSUP(2600), UNSUP(2800), UNSUP(2850), UNSUP(3000),
445         UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
446 };
447 static const u16 VSIM_VSEL_table[] = {
448         UNSUP(1000), UNSUP(1200), UNSUP(1300), 1800,
449         2800, 3000, 3000, 3000,
450 };
451 static const u16 VDAC_VSEL_table[] = {
452         1200, 1300, 1800, 1800,
453 };
454 static const u16 VDD1_VSEL_table[] = {
455         800, 1450,
456 };
457 static const u16 VDD2_VSEL_table[] = {
458         800, 1450, 1500,
459 };
460 static const u16 VIO_VSEL_table[] = {
461         1800, 1850,
462 };
463 static const u16 VINTANA2_VSEL_table[] = {
464         2500, 2750,
465 };
466
467 static int twl4030ldo_list_voltage(struct regulator_dev *rdev, unsigned index)
468 {
469         struct twlreg_info      *info = rdev_get_drvdata(rdev);
470         int                     mV = info->table[index];
471
472         return IS_UNSUP(mV) ? 0 : (LDO_MV(mV) * 1000);
473 }
474
475 static int
476 twl4030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
477 {
478         struct twlreg_info      *info = rdev_get_drvdata(rdev);
479
480         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE,
481                             selector);
482 }
483
484 static int twl4030ldo_get_voltage(struct regulator_dev *rdev)
485 {
486         struct twlreg_info      *info = rdev_get_drvdata(rdev);
487         int             vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER,
488                                                                 VREG_VOLTAGE);
489
490         if (vsel < 0)
491                 return vsel;
492
493         vsel &= info->table_len - 1;
494         return LDO_MV(info->table[vsel]) * 1000;
495 }
496
497 static struct regulator_ops twl4030ldo_ops = {
498         .list_voltage   = twl4030ldo_list_voltage,
499
500         .set_voltage_sel = twl4030ldo_set_voltage_sel,
501         .get_voltage    = twl4030ldo_get_voltage,
502
503         .enable         = twl4030reg_enable,
504         .disable        = twl4030reg_disable,
505         .is_enabled     = twl4030reg_is_enabled,
506
507         .set_mode       = twl4030reg_set_mode,
508
509         .get_status     = twl4030reg_get_status,
510 };
511
512 static int
513 twl4030smps_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV,
514                         unsigned *selector)
515 {
516         struct twlreg_info *info = rdev_get_drvdata(rdev);
517         int vsel = DIV_ROUND_UP(min_uV - 600000, 12500);
518
519         if (info->set_voltage) {
520                 return info->set_voltage(info->data, min_uV);
521         } else {
522                 twlreg_write(info, TWL_MODULE_PM_RECEIVER,
523                         VREG_VOLTAGE_SMPS_4030, vsel);
524         }
525
526         return 0;
527 }
528
529 static int twl4030smps_get_voltage(struct regulator_dev *rdev)
530 {
531         struct twlreg_info *info = rdev_get_drvdata(rdev);
532         int vsel;
533
534         if (info->get_voltage)
535                 return info->get_voltage(info->data);
536
537         vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER,
538                 VREG_VOLTAGE_SMPS_4030);
539
540         return vsel * 12500 + 600000;
541 }
542
543 static struct regulator_ops twl4030smps_ops = {
544         .set_voltage    = twl4030smps_set_voltage,
545         .get_voltage    = twl4030smps_get_voltage,
546 };
547
548 static int twl6030coresmps_set_voltage(struct regulator_dev *rdev, int min_uV,
549         int max_uV, unsigned *selector)
550 {
551         struct twlreg_info *info = rdev_get_drvdata(rdev);
552
553         if (info->set_voltage)
554                 return info->set_voltage(info->data, min_uV);
555
556         return -ENODEV;
557 }
558
559 static int twl6030coresmps_get_voltage(struct regulator_dev *rdev)
560 {
561         struct twlreg_info *info = rdev_get_drvdata(rdev);
562
563         if (info->get_voltage)
564                 return info->get_voltage(info->data);
565
566         return -ENODEV;
567 }
568
569 static struct regulator_ops twl6030coresmps_ops = {
570         .set_voltage    = twl6030coresmps_set_voltage,
571         .get_voltage    = twl6030coresmps_get_voltage,
572 };
573
574 static int twl6030ldo_list_voltage(struct regulator_dev *rdev, unsigned index)
575 {
576         struct twlreg_info      *info = rdev_get_drvdata(rdev);
577
578         return ((info->min_mV + (index * 100)) * 1000);
579 }
580
581 static int
582 twl6030ldo_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV,
583                        unsigned *selector)
584 {
585         struct twlreg_info      *info = rdev_get_drvdata(rdev);
586         int                     vsel;
587
588         if ((min_uV/1000 < info->min_mV) || (max_uV/1000 > info->max_mV))
589                 return -EDOM;
590
591         /*
592          * Use the below formula to calculate vsel
593          * mV = 1000mv + 100mv * (vsel - 1)
594          */
595         vsel = (min_uV/1000 - 1000)/100 + 1;
596         *selector = vsel;
597         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE, vsel);
598
599 }
600
601 static int twl6030ldo_get_voltage(struct regulator_dev *rdev)
602 {
603         struct twlreg_info      *info = rdev_get_drvdata(rdev);
604         int             vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER,
605                                                                 VREG_VOLTAGE);
606
607         if (vsel < 0)
608                 return vsel;
609
610         /*
611          * Use the below formula to calculate vsel
612          * mV = 1000mv + 100mv * (vsel - 1)
613          */
614         return (1000 + (100 * (vsel - 1))) * 1000;
615 }
616
617 static struct regulator_ops twl6030ldo_ops = {
618         .list_voltage   = twl6030ldo_list_voltage,
619
620         .set_voltage    = twl6030ldo_set_voltage,
621         .get_voltage    = twl6030ldo_get_voltage,
622
623         .enable         = twl6030reg_enable,
624         .disable        = twl6030reg_disable,
625         .is_enabled     = twl6030reg_is_enabled,
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
660         .set_mode       = twl4030reg_set_mode,
661
662         .get_status     = twl4030reg_get_status,
663 };
664
665 static struct regulator_ops twl6030fixed_ops = {
666         .list_voltage   = twlfixed_list_voltage,
667
668         .get_voltage    = twlfixed_get_voltage,
669
670         .enable         = twl6030reg_enable,
671         .disable        = twl6030reg_disable,
672         .is_enabled     = twl6030reg_is_enabled,
673
674         .set_mode       = twl6030reg_set_mode,
675
676         .get_status     = twl6030reg_get_status,
677 };
678
679 static struct regulator_ops twl6030_fixed_resource = {
680         .enable         = twl6030reg_enable,
681         .disable        = twl6030reg_disable,
682         .is_enabled     = twl6030reg_is_enabled,
683         .get_status     = twl6030reg_get_status,
684 };
685
686 /*
687  * SMPS status and control
688  */
689
690 static int twl6030smps_list_voltage(struct regulator_dev *rdev, unsigned index)
691 {
692         struct twlreg_info      *info = rdev_get_drvdata(rdev);
693
694         int voltage = 0;
695
696         switch (info->flags) {
697         case SMPS_OFFSET_EN:
698                 voltage = 100000;
699                 /* fall through */
700         case 0:
701                 switch (index) {
702                 case 0:
703                         voltage = 0;
704                         break;
705                 case 58:
706                         voltage = 1350 * 1000;
707                         break;
708                 case 59:
709                         voltage = 1500 * 1000;
710                         break;
711                 case 60:
712                         voltage = 1800 * 1000;
713                         break;
714                 case 61:
715                         voltage = 1900 * 1000;
716                         break;
717                 case 62:
718                         voltage = 2100 * 1000;
719                         break;
720                 default:
721                         voltage += (600000 + (12500 * (index - 1)));
722                 }
723                 break;
724         case SMPS_EXTENDED_EN:
725                 switch (index) {
726                 case 0:
727                         voltage = 0;
728                         break;
729                 case 58:
730                         voltage = 2084 * 1000;
731                         break;
732                 case 59:
733                         voltage = 2315 * 1000;
734                         break;
735                 case 60:
736                         voltage = 2778 * 1000;
737                         break;
738                 case 61:
739                         voltage = 2932 * 1000;
740                         break;
741                 case 62:
742                         voltage = 3241 * 1000;
743                         break;
744                 default:
745                         voltage = (1852000 + (38600 * (index - 1)));
746                 }
747                 break;
748         case SMPS_OFFSET_EN | SMPS_EXTENDED_EN:
749                 switch (index) {
750                 case 0:
751                         voltage = 0;
752                         break;
753                 case 58:
754                         voltage = 4167 * 1000;
755                         break;
756                 case 59:
757                         voltage = 2315 * 1000;
758                         break;
759                 case 60:
760                         voltage = 2778 * 1000;
761                         break;
762                 case 61:
763                         voltage = 2932 * 1000;
764                         break;
765                 case 62:
766                         voltage = 3241 * 1000;
767                         break;
768                 default:
769                         voltage = (2161000 + (38600 * (index - 1)));
770                 }
771                 break;
772         }
773
774         return voltage;
775 }
776
777 static int
778 twl6030smps_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV,
779                         unsigned int *selector)
780 {
781         struct twlreg_info      *info = rdev_get_drvdata(rdev);
782         int     vsel = 0;
783
784         switch (info->flags) {
785         case 0:
786                 if (min_uV == 0)
787                         vsel = 0;
788                 else if ((min_uV >= 600000) && (min_uV <= 1300000)) {
789                         int calc_uV;
790                         vsel = (min_uV - 600000) / 125;
791                         if (vsel % 100)
792                                 vsel += 100;
793                         vsel /= 100;
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 = (min_uV - 700000) / 125;
821                         if (vsel % 100)
822                                 vsel += 100;
823                         vsel /= 100;
824                         vsel++;
825                         calc_uV = twl6030smps_list_voltage(rdev, vsel);
826                         if (calc_uV > max_uV)
827                                 return -EINVAL;
828                 }
829                 /* Values 1..57 for vsel are linear and can be calculated
830                  * values 58..62 are non linear.
831                  */
832                 else if ((min_uV > 1900000) && (max_uV >= 2100000))
833                         vsel = 62;
834                 else if ((min_uV > 1800000) && (max_uV >= 1900000))
835                         vsel = 61;
836                 else if ((min_uV > 1350000) && (max_uV >= 1800000))
837                         vsel = 60;
838                 else if ((min_uV > 1350000) && (max_uV >= 1500000))
839                         vsel = 59;
840                 else if ((min_uV > 1300000) && (max_uV >= 1350000))
841                         vsel = 58;
842                 else
843                         return -EINVAL;
844                 break;
845         case SMPS_EXTENDED_EN:
846                 if (min_uV == 0)
847                         vsel = 0;
848                 else if ((min_uV >= 1852000) && (max_uV <= 4013600)) {
849                         vsel = (min_uV - 1852000) / 386;
850                         if (vsel % 100)
851                                 vsel += 100;
852                         vsel /= 100;
853                         vsel++;
854                 }
855                 break;
856         case SMPS_OFFSET_EN|SMPS_EXTENDED_EN:
857                 if (min_uV == 0)
858                         vsel = 0;
859                 else if ((min_uV >= 2161000) && (max_uV <= 4321000)) {
860                         vsel = (min_uV - 2161000) / 386;
861                         if (vsel % 100)
862                                 vsel += 100;
863                         vsel /= 100;
864                         vsel++;
865                 }
866                 break;
867         }
868
869         *selector = vsel;
870
871         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS,
872                                                         vsel);
873 }
874
875 static int twl6030smps_get_voltage_sel(struct regulator_dev *rdev)
876 {
877         struct twlreg_info      *info = rdev_get_drvdata(rdev);
878
879         return twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS);
880 }
881
882 static struct regulator_ops twlsmps_ops = {
883         .list_voltage           = twl6030smps_list_voltage,
884
885         .set_voltage            = twl6030smps_set_voltage,
886         .get_voltage_sel        = twl6030smps_get_voltage_sel,
887
888         .enable                 = twl6030reg_enable,
889         .disable                = twl6030reg_disable,
890         .is_enabled             = twl6030reg_is_enabled,
891
892         .set_mode               = twl6030reg_set_mode,
893
894         .get_status             = twl6030reg_get_status,
895 };
896
897 /*----------------------------------------------------------------------*/
898
899 #define TWL4030_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
900                         remap_conf) \
901                 TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
902                         remap_conf, TWL4030, twl4030fixed_ops)
903 #define TWL6030_FIXED_LDO(label, offset, mVolts, turnon_delay) \
904                 TWL_FIXED_LDO(label, offset, mVolts, 0x0, turnon_delay, \
905                         0x0, TWL6030, twl6030fixed_ops)
906
907 #define TWL4030_ADJUSTABLE_LDO(label, offset, num, turnon_delay, remap_conf) \
908 static struct twlreg_info TWL4030_INFO_##label = { \
909         .base = offset, \
910         .id = num, \
911         .table_len = ARRAY_SIZE(label##_VSEL_table), \
912         .table = label##_VSEL_table, \
913         .delay = turnon_delay, \
914         .remap = remap_conf, \
915         .desc = { \
916                 .name = #label, \
917                 .id = TWL4030_REG_##label, \
918                 .n_voltages = ARRAY_SIZE(label##_VSEL_table), \
919                 .ops = &twl4030ldo_ops, \
920                 .type = REGULATOR_VOLTAGE, \
921                 .owner = THIS_MODULE, \
922                 }, \
923         }
924
925 #define TWL4030_ADJUSTABLE_SMPS(label, offset, num, turnon_delay, remap_conf) \
926 static struct twlreg_info TWL4030_INFO_##label = { \
927         .base = offset, \
928         .id = num, \
929         .delay = turnon_delay, \
930         .remap = remap_conf, \
931         .desc = { \
932                 .name = #label, \
933                 .id = TWL4030_REG_##label, \
934                 .ops = &twl4030smps_ops, \
935                 .type = REGULATOR_VOLTAGE, \
936                 .owner = THIS_MODULE, \
937                 }, \
938         }
939
940 #define TWL6030_ADJUSTABLE_SMPS(label) \
941 static struct twlreg_info TWL6030_INFO_##label = { \
942         .desc = { \
943                 .name = #label, \
944                 .id = TWL6030_REG_##label, \
945                 .ops = &twl6030coresmps_ops, \
946                 .type = REGULATOR_VOLTAGE, \
947                 .owner = THIS_MODULE, \
948                 }, \
949         }
950
951 #define TWL6030_ADJUSTABLE_LDO(label, offset, min_mVolts, max_mVolts) \
952 static struct twlreg_info TWL6030_INFO_##label = { \
953         .base = offset, \
954         .min_mV = min_mVolts, \
955         .max_mV = max_mVolts, \
956         .desc = { \
957                 .name = #label, \
958                 .id = TWL6030_REG_##label, \
959                 .n_voltages = (max_mVolts - min_mVolts)/100 + 1, \
960                 .ops = &twl6030ldo_ops, \
961                 .type = REGULATOR_VOLTAGE, \
962                 .owner = THIS_MODULE, \
963                 }, \
964         }
965
966 #define TWL6025_ADJUSTABLE_LDO(label, offset, min_mVolts, max_mVolts) \
967 static struct twlreg_info TWL6025_INFO_##label = { \
968         .base = offset, \
969         .min_mV = min_mVolts, \
970         .max_mV = max_mVolts, \
971         .desc = { \
972                 .name = #label, \
973                 .id = TWL6025_REG_##label, \
974                 .n_voltages = ((max_mVolts - min_mVolts)/100) + 1, \
975                 .ops = &twl6030ldo_ops, \
976                 .type = REGULATOR_VOLTAGE, \
977                 .owner = THIS_MODULE, \
978                 }, \
979         }
980
981 #define TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, remap_conf, \
982                 family, operations) \
983 static struct twlreg_info TWLFIXED_INFO_##label = { \
984         .base = offset, \
985         .id = num, \
986         .min_mV = mVolts, \
987         .delay = turnon_delay, \
988         .remap = remap_conf, \
989         .desc = { \
990                 .name = #label, \
991                 .id = family##_REG_##label, \
992                 .n_voltages = 1, \
993                 .ops = &operations, \
994                 .type = REGULATOR_VOLTAGE, \
995                 .owner = THIS_MODULE, \
996                 }, \
997         }
998
999 #define TWL6030_FIXED_RESOURCE(label, offset, turnon_delay) \
1000 static struct twlreg_info TWLRES_INFO_##label = { \
1001         .base = offset, \
1002         .delay = turnon_delay, \
1003         .desc = { \
1004                 .name = #label, \
1005                 .id = TWL6030_REG_##label, \
1006                 .ops = &twl6030_fixed_resource, \
1007                 .type = REGULATOR_VOLTAGE, \
1008                 .owner = THIS_MODULE, \
1009                 }, \
1010         }
1011
1012 #define TWL6025_ADJUSTABLE_SMPS(label, offset) \
1013 static struct twlreg_info TWLSMPS_INFO_##label = { \
1014         .base = offset, \
1015         .min_mV = 600, \
1016         .max_mV = 2100, \
1017         .desc = { \
1018                 .name = #label, \
1019                 .id = TWL6025_REG_##label, \
1020                 .n_voltages = 63, \
1021                 .ops = &twlsmps_ops, \
1022                 .type = REGULATOR_VOLTAGE, \
1023                 .owner = THIS_MODULE, \
1024                 }, \
1025         }
1026
1027 /*
1028  * We list regulators here if systems need some level of
1029  * software control over them after boot.
1030  */
1031 TWL4030_ADJUSTABLE_LDO(VAUX1, 0x17, 1, 100, 0x08);
1032 TWL4030_ADJUSTABLE_LDO(VAUX2_4030, 0x1b, 2, 100, 0x08);
1033 TWL4030_ADJUSTABLE_LDO(VAUX2, 0x1b, 2, 100, 0x08);
1034 TWL4030_ADJUSTABLE_LDO(VAUX3, 0x1f, 3, 100, 0x08);
1035 TWL4030_ADJUSTABLE_LDO(VAUX4, 0x23, 4, 100, 0x08);
1036 TWL4030_ADJUSTABLE_LDO(VMMC1, 0x27, 5, 100, 0x08);
1037 TWL4030_ADJUSTABLE_LDO(VMMC2, 0x2b, 6, 100, 0x08);
1038 TWL4030_ADJUSTABLE_LDO(VPLL1, 0x2f, 7, 100, 0x00);
1039 TWL4030_ADJUSTABLE_LDO(VPLL2, 0x33, 8, 100, 0x08);
1040 TWL4030_ADJUSTABLE_LDO(VSIM, 0x37, 9, 100, 0x00);
1041 TWL4030_ADJUSTABLE_LDO(VDAC, 0x3b, 10, 100, 0x08);
1042 TWL4030_ADJUSTABLE_LDO(VINTANA2, 0x43, 12, 100, 0x08);
1043 TWL4030_ADJUSTABLE_LDO(VIO, 0x4b, 14, 1000, 0x08);
1044 TWL4030_ADJUSTABLE_SMPS(VDD1, 0x55, 15, 1000, 0x08);
1045 TWL4030_ADJUSTABLE_SMPS(VDD2, 0x63, 16, 1000, 0x08);
1046 /* VUSBCP is managed *only* by the USB subchip */
1047 /* 6030 REG with base as PMC Slave Misc : 0x0030 */
1048 /* Turnon-delay and remap configuration values for 6030 are not
1049    verified since the specification is not public */
1050 TWL6030_ADJUSTABLE_SMPS(VDD1);
1051 TWL6030_ADJUSTABLE_SMPS(VDD2);
1052 TWL6030_ADJUSTABLE_SMPS(VDD3);
1053 TWL6030_ADJUSTABLE_LDO(VAUX1_6030, 0x54, 1000, 3300);
1054 TWL6030_ADJUSTABLE_LDO(VAUX2_6030, 0x58, 1000, 3300);
1055 TWL6030_ADJUSTABLE_LDO(VAUX3_6030, 0x5c, 1000, 3300);
1056 TWL6030_ADJUSTABLE_LDO(VMMC, 0x68, 1000, 3300);
1057 TWL6030_ADJUSTABLE_LDO(VPP, 0x6c, 1000, 3300);
1058 TWL6030_ADJUSTABLE_LDO(VUSIM, 0x74, 1000, 3300);
1059 /* 6025 are renamed compared to 6030 versions */
1060 TWL6025_ADJUSTABLE_LDO(LDO2, 0x54, 1000, 3300);
1061 TWL6025_ADJUSTABLE_LDO(LDO4, 0x58, 1000, 3300);
1062 TWL6025_ADJUSTABLE_LDO(LDO3, 0x5c, 1000, 3300);
1063 TWL6025_ADJUSTABLE_LDO(LDO5, 0x68, 1000, 3300);
1064 TWL6025_ADJUSTABLE_LDO(LDO1, 0x6c, 1000, 3300);
1065 TWL6025_ADJUSTABLE_LDO(LDO7, 0x74, 1000, 3300);
1066 TWL6025_ADJUSTABLE_LDO(LDO6, 0x60, 1000, 3300);
1067 TWL6025_ADJUSTABLE_LDO(LDOLN, 0x64, 1000, 3300);
1068 TWL6025_ADJUSTABLE_LDO(LDOUSB, 0x70, 1000, 3300);
1069 TWL4030_FIXED_LDO(VINTANA2, 0x3f, 1500, 11, 100, 0x08);
1070 TWL4030_FIXED_LDO(VINTDIG, 0x47, 1500, 13, 100, 0x08);
1071 TWL4030_FIXED_LDO(VUSB1V5, 0x71, 1500, 17, 100, 0x08);
1072 TWL4030_FIXED_LDO(VUSB1V8, 0x74, 1800, 18, 100, 0x08);
1073 TWL4030_FIXED_LDO(VUSB3V1, 0x77, 3100, 19, 150, 0x08);
1074 TWL6030_FIXED_LDO(VANA, 0x50, 2100, 0);
1075 TWL6030_FIXED_LDO(VCXIO, 0x60, 1800, 0);
1076 TWL6030_FIXED_LDO(VDAC, 0x64, 1800, 0);
1077 TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 0);
1078 TWL6030_FIXED_LDO(V1V8, 0x16, 1800, 0);
1079 TWL6030_FIXED_LDO(V2V1, 0x1c, 2100, 0);
1080 TWL6030_FIXED_RESOURCE(CLK32KG, 0x8C, 0);
1081 TWL6025_ADJUSTABLE_SMPS(SMPS3, 0x34);
1082 TWL6025_ADJUSTABLE_SMPS(SMPS4, 0x10);
1083 TWL6025_ADJUSTABLE_SMPS(VIO, 0x16);
1084
1085 static u8 twl_get_smps_offset(void)
1086 {
1087         u8 value;
1088
1089         twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
1090                         TWL6030_SMPS_OFFSET);
1091         return value;
1092 }
1093
1094 static u8 twl_get_smps_mult(void)
1095 {
1096         u8 value;
1097
1098         twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
1099                         TWL6030_SMPS_MULT);
1100         return value;
1101 }
1102
1103 #define TWL_OF_MATCH(comp, family, label) \
1104         { \
1105                 .compatible = comp, \
1106                 .data = &family##_INFO_##label, \
1107         }
1108
1109 #define TWL4030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL4030, label)
1110 #define TWL6030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6030, label)
1111 #define TWL6025_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6025, label)
1112 #define TWLFIXED_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLFIXED, label)
1113 #define TWLRES_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLRES, label)
1114 #define TWLSMPS_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLSMPS, label)
1115
1116 static const struct of_device_id twl_of_match[] __devinitconst = {
1117         TWL4030_OF_MATCH("ti,twl4030-vaux1", VAUX1),
1118         TWL4030_OF_MATCH("ti,twl4030-vaux2", VAUX2_4030),
1119         TWL4030_OF_MATCH("ti,twl5030-vaux2", VAUX2),
1120         TWL4030_OF_MATCH("ti,twl4030-vaux3", VAUX3),
1121         TWL4030_OF_MATCH("ti,twl4030-vaux4", VAUX4),
1122         TWL4030_OF_MATCH("ti,twl4030-vmmc1", VMMC1),
1123         TWL4030_OF_MATCH("ti,twl4030-vmmc2", VMMC2),
1124         TWL4030_OF_MATCH("ti,twl4030-vpll1", VPLL1),
1125         TWL4030_OF_MATCH("ti,twl4030-vpll2", VPLL2),
1126         TWL4030_OF_MATCH("ti,twl4030-vsim", VSIM),
1127         TWL4030_OF_MATCH("ti,twl4030-vdac", VDAC),
1128         TWL4030_OF_MATCH("ti,twl4030-vintana2", VINTANA2),
1129         TWL4030_OF_MATCH("ti,twl4030-vio", VIO),
1130         TWL4030_OF_MATCH("ti,twl4030-vdd1", VDD1),
1131         TWL4030_OF_MATCH("ti,twl4030-vdd2", VDD2),
1132         TWL6030_OF_MATCH("ti,twl6030-vdd1", VDD1),
1133         TWL6030_OF_MATCH("ti,twl6030-vdd2", VDD2),
1134         TWL6030_OF_MATCH("ti,twl6030-vdd3", VDD3),
1135         TWL6030_OF_MATCH("ti,twl6030-vaux1", VAUX1_6030),
1136         TWL6030_OF_MATCH("ti,twl6030-vaux2", VAUX2_6030),
1137         TWL6030_OF_MATCH("ti,twl6030-vaux3", VAUX3_6030),
1138         TWL6030_OF_MATCH("ti,twl6030-vmmc", VMMC),
1139         TWL6030_OF_MATCH("ti,twl6030-vpp", VPP),
1140         TWL6030_OF_MATCH("ti,twl6030-vusim", VUSIM),
1141         TWL6025_OF_MATCH("ti,twl6025-ldo2", LDO2),
1142         TWL6025_OF_MATCH("ti,twl6025-ldo4", LDO4),
1143         TWL6025_OF_MATCH("ti,twl6025-ldo3", LDO3),
1144         TWL6025_OF_MATCH("ti,twl6025-ldo5", LDO5),
1145         TWL6025_OF_MATCH("ti,twl6025-ldo1", LDO1),
1146         TWL6025_OF_MATCH("ti,twl6025-ldo7", LDO7),
1147         TWL6025_OF_MATCH("ti,twl6025-ldo6", LDO6),
1148         TWL6025_OF_MATCH("ti,twl6025-ldoln", LDOLN),
1149         TWL6025_OF_MATCH("ti,twl6025-ldousb", LDOUSB),
1150         TWLFIXED_OF_MATCH("ti,twl4030-vintana2", VINTANA2),
1151         TWLFIXED_OF_MATCH("ti,twl4030-vintdig", VINTDIG),
1152         TWLFIXED_OF_MATCH("ti,twl4030-vusb1v5", VUSB1V5),
1153         TWLFIXED_OF_MATCH("ti,twl4030-vusb1v8", VUSB1V8),
1154         TWLFIXED_OF_MATCH("ti,twl4030-vusb3v1", VUSB3V1),
1155         TWLFIXED_OF_MATCH("ti,twl6030-vana", VANA),
1156         TWLFIXED_OF_MATCH("ti,twl6030-vcxio", VCXIO),
1157         TWLFIXED_OF_MATCH("ti,twl6030-vdac", VDAC),
1158         TWLFIXED_OF_MATCH("ti,twl6030-vusb", VUSB),
1159         TWLFIXED_OF_MATCH("ti,twl6030-v1v8", V1V8),
1160         TWLFIXED_OF_MATCH("ti,twl6030-v2v1", V2V1),
1161         TWLRES_OF_MATCH("ti,twl6030-clk32kg", CLK32KG),
1162         TWLSMPS_OF_MATCH("ti,twl6025-smps3", SMPS3),
1163         TWLSMPS_OF_MATCH("ti,twl6025-smps4", SMPS4),
1164         TWLSMPS_OF_MATCH("ti,twl6025-vio", VIO),
1165         {},
1166 };
1167 MODULE_DEVICE_TABLE(of, twl_of_match);
1168
1169 static int __devinit twlreg_probe(struct platform_device *pdev)
1170 {
1171         int                             i, id;
1172         struct twlreg_info              *info;
1173         struct regulator_init_data      *initdata;
1174         struct regulation_constraints   *c;
1175         struct regulator_dev            *rdev;
1176         struct twl_regulator_driver_data        *drvdata;
1177         const struct of_device_id       *match;
1178         struct regulator_config         config = { };
1179
1180         match = of_match_device(twl_of_match, &pdev->dev);
1181         if (match) {
1182                 info = match->data;
1183                 id = info->desc.id;
1184                 initdata = of_get_regulator_init_data(&pdev->dev,
1185                                                       pdev->dev.of_node);
1186                 drvdata = NULL;
1187         } else {
1188                 id = pdev->id;
1189                 initdata = pdev->dev.platform_data;
1190                 for (i = 0, info = NULL; i < ARRAY_SIZE(twl_of_match); i++) {
1191                         info = twl_of_match[i].data;
1192                         if (info && info->desc.id == id)
1193                                 break;
1194                 }
1195                 if (i == ARRAY_SIZE(twl_of_match))
1196                         return -ENODEV;
1197
1198                 drvdata = initdata->driver_data;
1199                 if (!drvdata)
1200                         return -EINVAL;
1201         }
1202
1203         if (!info)
1204                 return -ENODEV;
1205
1206         if (!initdata)
1207                 return -EINVAL;
1208
1209         if (drvdata) {
1210                 /* copy the driver data into regulator data */
1211                 info->features = drvdata->features;
1212                 info->data = drvdata->data;
1213                 info->set_voltage = drvdata->set_voltage;
1214                 info->get_voltage = drvdata->get_voltage;
1215         }
1216
1217         /* Constrain board-specific capabilities according to what
1218          * this driver and the chip itself can actually do.
1219          */
1220         c = &initdata->constraints;
1221         c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY;
1222         c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE
1223                                 | REGULATOR_CHANGE_MODE
1224                                 | REGULATOR_CHANGE_STATUS;
1225         switch (id) {
1226         case TWL4030_REG_VIO:
1227         case TWL4030_REG_VDD1:
1228         case TWL4030_REG_VDD2:
1229         case TWL4030_REG_VPLL1:
1230         case TWL4030_REG_VINTANA1:
1231         case TWL4030_REG_VINTANA2:
1232         case TWL4030_REG_VINTDIG:
1233                 c->always_on = true;
1234                 break;
1235         default:
1236                 break;
1237         }
1238
1239         switch (id) {
1240         case TWL6025_REG_SMPS3:
1241                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS3)
1242                         info->flags |= SMPS_EXTENDED_EN;
1243                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS3)
1244                         info->flags |= SMPS_OFFSET_EN;
1245                 break;
1246         case TWL6025_REG_SMPS4:
1247                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS4)
1248                         info->flags |= SMPS_EXTENDED_EN;
1249                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS4)
1250                         info->flags |= SMPS_OFFSET_EN;
1251                 break;
1252         case TWL6025_REG_VIO:
1253                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_VIO)
1254                         info->flags |= SMPS_EXTENDED_EN;
1255                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_VIO)
1256                         info->flags |= SMPS_OFFSET_EN;
1257                 break;
1258         }
1259
1260         config.dev = &pdev->dev;
1261         config.init_data = initdata;
1262         config.driver_data = info;
1263         config.of_node = pdev->dev.of_node;
1264
1265         rdev = regulator_register(&info->desc, &config);
1266         if (IS_ERR(rdev)) {
1267                 dev_err(&pdev->dev, "can't register %s, %ld\n",
1268                                 info->desc.name, PTR_ERR(rdev));
1269                 return PTR_ERR(rdev);
1270         }
1271         platform_set_drvdata(pdev, rdev);
1272
1273         if (twl_class_is_4030())
1274                 twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_REMAP,
1275                                                 info->remap);
1276
1277         /* NOTE:  many regulators support short-circuit IRQs (presentable
1278          * as REGULATOR_OVER_CURRENT notifications?) configured via:
1279          *  - SC_CONFIG
1280          *  - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4)
1281          *  - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2)
1282          *  - IT_CONFIG
1283          */
1284
1285         return 0;
1286 }
1287
1288 static int __devexit twlreg_remove(struct platform_device *pdev)
1289 {
1290         regulator_unregister(platform_get_drvdata(pdev));
1291         return 0;
1292 }
1293
1294 MODULE_ALIAS("platform:twl_reg");
1295
1296 static struct platform_driver twlreg_driver = {
1297         .probe          = twlreg_probe,
1298         .remove         = __devexit_p(twlreg_remove),
1299         /* NOTE: short name, to work around driver model truncation of
1300          * "twl_regulator.12" (and friends) to "twl_regulator.1".
1301          */
1302         .driver  = {
1303                 .name  = "twl_reg",
1304                 .owner = THIS_MODULE,
1305                 .of_match_table = of_match_ptr(twl_of_match),
1306         },
1307 };
1308
1309 static int __init twlreg_init(void)
1310 {
1311         return platform_driver_register(&twlreg_driver);
1312 }
1313 subsys_initcall(twlreg_init);
1314
1315 static void __exit twlreg_exit(void)
1316 {
1317         platform_driver_unregister(&twlreg_driver);
1318 }
1319 module_exit(twlreg_exit)
1320
1321 MODULE_DESCRIPTION("TWL regulator driver");
1322 MODULE_LICENSE("GPL");