regulator: twl-regulator: Fix off-by-one vsel setting in twl6030smps_set_voltage
[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 = DIV_ROUND_UP(min_uV - 600000, 12500);
791                         vsel++;
792                         calc_uV = twl6030smps_list_voltage(rdev, vsel);
793                         if (calc_uV > max_uV)
794                                 return -EINVAL;
795                 }
796                 /* Values 1..57 for vsel are linear and can be calculated
797                  * values 58..62 are non linear.
798                  */
799                 else if ((min_uV > 1900000) && (max_uV >= 2100000))
800                         vsel = 62;
801                 else if ((min_uV > 1800000) && (max_uV >= 1900000))
802                         vsel = 61;
803                 else if ((min_uV > 1500000) && (max_uV >= 1800000))
804                         vsel = 60;
805                 else if ((min_uV > 1350000) && (max_uV >= 1500000))
806                         vsel = 59;
807                 else if ((min_uV > 1300000) && (max_uV >= 1350000))
808                         vsel = 58;
809                 else
810                         return -EINVAL;
811                 break;
812         case SMPS_OFFSET_EN:
813                 if (min_uV == 0)
814                         vsel = 0;
815                 else if ((min_uV >= 700000) && (min_uV <= 1420000)) {
816                         int calc_uV;
817                         vsel = DIV_ROUND_UP(min_uV - 700000, 12500);
818                         vsel++;
819                         calc_uV = twl6030smps_list_voltage(rdev, vsel);
820                         if (calc_uV > max_uV)
821                                 return -EINVAL;
822                 }
823                 /* Values 1..57 for vsel are linear and can be calculated
824                  * values 58..62 are non linear.
825                  */
826                 else if ((min_uV > 1900000) && (max_uV >= 2100000))
827                         vsel = 62;
828                 else if ((min_uV > 1800000) && (max_uV >= 1900000))
829                         vsel = 61;
830                 else if ((min_uV > 1350000) && (max_uV >= 1800000))
831                         vsel = 60;
832                 else if ((min_uV > 1350000) && (max_uV >= 1500000))
833                         vsel = 59;
834                 else if ((min_uV > 1300000) && (max_uV >= 1350000))
835                         vsel = 58;
836                 else
837                         return -EINVAL;
838                 break;
839         case SMPS_EXTENDED_EN:
840                 if (min_uV == 0) {
841                         vsel = 0;
842                 } else if ((min_uV >= 1852000) && (max_uV <= 4013600)) {
843                         vsel = DIV_ROUND_UP(min_uV - 1852000, 38600);
844                         vsel++;
845                 }
846                 break;
847         case SMPS_OFFSET_EN|SMPS_EXTENDED_EN:
848                 if (min_uV == 0) {
849                         vsel = 0;
850                 } else if ((min_uV >= 2161000) && (max_uV <= 4321000)) {
851                         vsel = DIV_ROUND_UP(min_uV - 2161000, 38600);
852                         vsel++;
853                 }
854                 break;
855         }
856
857         *selector = vsel;
858
859         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS,
860                                                         vsel);
861 }
862
863 static int twl6030smps_get_voltage_sel(struct regulator_dev *rdev)
864 {
865         struct twlreg_info      *info = rdev_get_drvdata(rdev);
866
867         return twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS);
868 }
869
870 static struct regulator_ops twlsmps_ops = {
871         .list_voltage           = twl6030smps_list_voltage,
872
873         .set_voltage            = twl6030smps_set_voltage,
874         .get_voltage_sel        = twl6030smps_get_voltage_sel,
875
876         .enable                 = twl6030reg_enable,
877         .disable                = twl6030reg_disable,
878         .is_enabled             = twl6030reg_is_enabled,
879
880         .set_mode               = twl6030reg_set_mode,
881
882         .get_status             = twl6030reg_get_status,
883 };
884
885 /*----------------------------------------------------------------------*/
886
887 #define TWL4030_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
888                         remap_conf) \
889                 TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
890                         remap_conf, TWL4030, twl4030fixed_ops)
891 #define TWL6030_FIXED_LDO(label, offset, mVolts, turnon_delay) \
892                 TWL_FIXED_LDO(label, offset, mVolts, 0x0, turnon_delay, \
893                         0x0, TWL6030, twl6030fixed_ops)
894
895 #define TWL4030_ADJUSTABLE_LDO(label, offset, num, turnon_delay, remap_conf) \
896 static struct twlreg_info TWL4030_INFO_##label = { \
897         .base = offset, \
898         .id = num, \
899         .table_len = ARRAY_SIZE(label##_VSEL_table), \
900         .table = label##_VSEL_table, \
901         .delay = turnon_delay, \
902         .remap = remap_conf, \
903         .desc = { \
904                 .name = #label, \
905                 .id = TWL4030_REG_##label, \
906                 .n_voltages = ARRAY_SIZE(label##_VSEL_table), \
907                 .ops = &twl4030ldo_ops, \
908                 .type = REGULATOR_VOLTAGE, \
909                 .owner = THIS_MODULE, \
910                 }, \
911         }
912
913 #define TWL4030_ADJUSTABLE_SMPS(label, offset, num, turnon_delay, remap_conf) \
914 static struct twlreg_info TWL4030_INFO_##label = { \
915         .base = offset, \
916         .id = num, \
917         .delay = turnon_delay, \
918         .remap = remap_conf, \
919         .desc = { \
920                 .name = #label, \
921                 .id = TWL4030_REG_##label, \
922                 .ops = &twl4030smps_ops, \
923                 .type = REGULATOR_VOLTAGE, \
924                 .owner = THIS_MODULE, \
925                 }, \
926         }
927
928 #define TWL6030_ADJUSTABLE_SMPS(label) \
929 static struct twlreg_info TWL6030_INFO_##label = { \
930         .desc = { \
931                 .name = #label, \
932                 .id = TWL6030_REG_##label, \
933                 .ops = &twl6030coresmps_ops, \
934                 .type = REGULATOR_VOLTAGE, \
935                 .owner = THIS_MODULE, \
936                 }, \
937         }
938
939 #define TWL6030_ADJUSTABLE_LDO(label, offset, min_mVolts, max_mVolts) \
940 static struct twlreg_info TWL6030_INFO_##label = { \
941         .base = offset, \
942         .min_mV = min_mVolts, \
943         .max_mV = max_mVolts, \
944         .desc = { \
945                 .name = #label, \
946                 .id = TWL6030_REG_##label, \
947                 .n_voltages = (max_mVolts - min_mVolts)/100 + 1, \
948                 .ops = &twl6030ldo_ops, \
949                 .type = REGULATOR_VOLTAGE, \
950                 .owner = THIS_MODULE, \
951                 }, \
952         }
953
954 #define TWL6025_ADJUSTABLE_LDO(label, offset, min_mVolts, max_mVolts) \
955 static struct twlreg_info TWL6025_INFO_##label = { \
956         .base = offset, \
957         .min_mV = min_mVolts, \
958         .max_mV = max_mVolts, \
959         .desc = { \
960                 .name = #label, \
961                 .id = TWL6025_REG_##label, \
962                 .n_voltages = ((max_mVolts - min_mVolts)/100) + 1, \
963                 .ops = &twl6030ldo_ops, \
964                 .type = REGULATOR_VOLTAGE, \
965                 .owner = THIS_MODULE, \
966                 }, \
967         }
968
969 #define TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, remap_conf, \
970                 family, operations) \
971 static struct twlreg_info TWLFIXED_INFO_##label = { \
972         .base = offset, \
973         .id = num, \
974         .min_mV = mVolts, \
975         .delay = turnon_delay, \
976         .remap = remap_conf, \
977         .desc = { \
978                 .name = #label, \
979                 .id = family##_REG_##label, \
980                 .n_voltages = 1, \
981                 .ops = &operations, \
982                 .type = REGULATOR_VOLTAGE, \
983                 .owner = THIS_MODULE, \
984                 }, \
985         }
986
987 #define TWL6030_FIXED_RESOURCE(label, offset, turnon_delay) \
988 static struct twlreg_info TWLRES_INFO_##label = { \
989         .base = offset, \
990         .delay = turnon_delay, \
991         .desc = { \
992                 .name = #label, \
993                 .id = TWL6030_REG_##label, \
994                 .ops = &twl6030_fixed_resource, \
995                 .type = REGULATOR_VOLTAGE, \
996                 .owner = THIS_MODULE, \
997                 }, \
998         }
999
1000 #define TWL6025_ADJUSTABLE_SMPS(label, offset) \
1001 static struct twlreg_info TWLSMPS_INFO_##label = { \
1002         .base = offset, \
1003         .min_mV = 600, \
1004         .max_mV = 2100, \
1005         .desc = { \
1006                 .name = #label, \
1007                 .id = TWL6025_REG_##label, \
1008                 .n_voltages = 63, \
1009                 .ops = &twlsmps_ops, \
1010                 .type = REGULATOR_VOLTAGE, \
1011                 .owner = THIS_MODULE, \
1012                 }, \
1013         }
1014
1015 /*
1016  * We list regulators here if systems need some level of
1017  * software control over them after boot.
1018  */
1019 TWL4030_ADJUSTABLE_LDO(VAUX1, 0x17, 1, 100, 0x08);
1020 TWL4030_ADJUSTABLE_LDO(VAUX2_4030, 0x1b, 2, 100, 0x08);
1021 TWL4030_ADJUSTABLE_LDO(VAUX2, 0x1b, 2, 100, 0x08);
1022 TWL4030_ADJUSTABLE_LDO(VAUX3, 0x1f, 3, 100, 0x08);
1023 TWL4030_ADJUSTABLE_LDO(VAUX4, 0x23, 4, 100, 0x08);
1024 TWL4030_ADJUSTABLE_LDO(VMMC1, 0x27, 5, 100, 0x08);
1025 TWL4030_ADJUSTABLE_LDO(VMMC2, 0x2b, 6, 100, 0x08);
1026 TWL4030_ADJUSTABLE_LDO(VPLL1, 0x2f, 7, 100, 0x00);
1027 TWL4030_ADJUSTABLE_LDO(VPLL2, 0x33, 8, 100, 0x08);
1028 TWL4030_ADJUSTABLE_LDO(VSIM, 0x37, 9, 100, 0x00);
1029 TWL4030_ADJUSTABLE_LDO(VDAC, 0x3b, 10, 100, 0x08);
1030 TWL4030_ADJUSTABLE_LDO(VINTANA2, 0x43, 12, 100, 0x08);
1031 TWL4030_ADJUSTABLE_LDO(VIO, 0x4b, 14, 1000, 0x08);
1032 TWL4030_ADJUSTABLE_SMPS(VDD1, 0x55, 15, 1000, 0x08);
1033 TWL4030_ADJUSTABLE_SMPS(VDD2, 0x63, 16, 1000, 0x08);
1034 /* VUSBCP is managed *only* by the USB subchip */
1035 /* 6030 REG with base as PMC Slave Misc : 0x0030 */
1036 /* Turnon-delay and remap configuration values for 6030 are not
1037    verified since the specification is not public */
1038 TWL6030_ADJUSTABLE_SMPS(VDD1);
1039 TWL6030_ADJUSTABLE_SMPS(VDD2);
1040 TWL6030_ADJUSTABLE_SMPS(VDD3);
1041 TWL6030_ADJUSTABLE_LDO(VAUX1_6030, 0x54, 1000, 3300);
1042 TWL6030_ADJUSTABLE_LDO(VAUX2_6030, 0x58, 1000, 3300);
1043 TWL6030_ADJUSTABLE_LDO(VAUX3_6030, 0x5c, 1000, 3300);
1044 TWL6030_ADJUSTABLE_LDO(VMMC, 0x68, 1000, 3300);
1045 TWL6030_ADJUSTABLE_LDO(VPP, 0x6c, 1000, 3300);
1046 TWL6030_ADJUSTABLE_LDO(VUSIM, 0x74, 1000, 3300);
1047 /* 6025 are renamed compared to 6030 versions */
1048 TWL6025_ADJUSTABLE_LDO(LDO2, 0x54, 1000, 3300);
1049 TWL6025_ADJUSTABLE_LDO(LDO4, 0x58, 1000, 3300);
1050 TWL6025_ADJUSTABLE_LDO(LDO3, 0x5c, 1000, 3300);
1051 TWL6025_ADJUSTABLE_LDO(LDO5, 0x68, 1000, 3300);
1052 TWL6025_ADJUSTABLE_LDO(LDO1, 0x6c, 1000, 3300);
1053 TWL6025_ADJUSTABLE_LDO(LDO7, 0x74, 1000, 3300);
1054 TWL6025_ADJUSTABLE_LDO(LDO6, 0x60, 1000, 3300);
1055 TWL6025_ADJUSTABLE_LDO(LDOLN, 0x64, 1000, 3300);
1056 TWL6025_ADJUSTABLE_LDO(LDOUSB, 0x70, 1000, 3300);
1057 TWL4030_FIXED_LDO(VINTANA2, 0x3f, 1500, 11, 100, 0x08);
1058 TWL4030_FIXED_LDO(VINTDIG, 0x47, 1500, 13, 100, 0x08);
1059 TWL4030_FIXED_LDO(VUSB1V5, 0x71, 1500, 17, 100, 0x08);
1060 TWL4030_FIXED_LDO(VUSB1V8, 0x74, 1800, 18, 100, 0x08);
1061 TWL4030_FIXED_LDO(VUSB3V1, 0x77, 3100, 19, 150, 0x08);
1062 TWL6030_FIXED_LDO(VANA, 0x50, 2100, 0);
1063 TWL6030_FIXED_LDO(VCXIO, 0x60, 1800, 0);
1064 TWL6030_FIXED_LDO(VDAC, 0x64, 1800, 0);
1065 TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 0);
1066 TWL6030_FIXED_LDO(V1V8, 0x16, 1800, 0);
1067 TWL6030_FIXED_LDO(V2V1, 0x1c, 2100, 0);
1068 TWL6030_FIXED_RESOURCE(CLK32KG, 0x8C, 0);
1069 TWL6025_ADJUSTABLE_SMPS(SMPS3, 0x34);
1070 TWL6025_ADJUSTABLE_SMPS(SMPS4, 0x10);
1071 TWL6025_ADJUSTABLE_SMPS(VIO, 0x16);
1072
1073 static u8 twl_get_smps_offset(void)
1074 {
1075         u8 value;
1076
1077         twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
1078                         TWL6030_SMPS_OFFSET);
1079         return value;
1080 }
1081
1082 static u8 twl_get_smps_mult(void)
1083 {
1084         u8 value;
1085
1086         twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
1087                         TWL6030_SMPS_MULT);
1088         return value;
1089 }
1090
1091 #define TWL_OF_MATCH(comp, family, label) \
1092         { \
1093                 .compatible = comp, \
1094                 .data = &family##_INFO_##label, \
1095         }
1096
1097 #define TWL4030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL4030, label)
1098 #define TWL6030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6030, label)
1099 #define TWL6025_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6025, label)
1100 #define TWLFIXED_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLFIXED, label)
1101 #define TWLRES_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLRES, label)
1102 #define TWLSMPS_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLSMPS, label)
1103
1104 static const struct of_device_id twl_of_match[] __devinitconst = {
1105         TWL4030_OF_MATCH("ti,twl4030-vaux1", VAUX1),
1106         TWL4030_OF_MATCH("ti,twl4030-vaux2", VAUX2_4030),
1107         TWL4030_OF_MATCH("ti,twl5030-vaux2", VAUX2),
1108         TWL4030_OF_MATCH("ti,twl4030-vaux3", VAUX3),
1109         TWL4030_OF_MATCH("ti,twl4030-vaux4", VAUX4),
1110         TWL4030_OF_MATCH("ti,twl4030-vmmc1", VMMC1),
1111         TWL4030_OF_MATCH("ti,twl4030-vmmc2", VMMC2),
1112         TWL4030_OF_MATCH("ti,twl4030-vpll1", VPLL1),
1113         TWL4030_OF_MATCH("ti,twl4030-vpll2", VPLL2),
1114         TWL4030_OF_MATCH("ti,twl4030-vsim", VSIM),
1115         TWL4030_OF_MATCH("ti,twl4030-vdac", VDAC),
1116         TWL4030_OF_MATCH("ti,twl4030-vintana2", VINTANA2),
1117         TWL4030_OF_MATCH("ti,twl4030-vio", VIO),
1118         TWL4030_OF_MATCH("ti,twl4030-vdd1", VDD1),
1119         TWL4030_OF_MATCH("ti,twl4030-vdd2", VDD2),
1120         TWL6030_OF_MATCH("ti,twl6030-vdd1", VDD1),
1121         TWL6030_OF_MATCH("ti,twl6030-vdd2", VDD2),
1122         TWL6030_OF_MATCH("ti,twl6030-vdd3", VDD3),
1123         TWL6030_OF_MATCH("ti,twl6030-vaux1", VAUX1_6030),
1124         TWL6030_OF_MATCH("ti,twl6030-vaux2", VAUX2_6030),
1125         TWL6030_OF_MATCH("ti,twl6030-vaux3", VAUX3_6030),
1126         TWL6030_OF_MATCH("ti,twl6030-vmmc", VMMC),
1127         TWL6030_OF_MATCH("ti,twl6030-vpp", VPP),
1128         TWL6030_OF_MATCH("ti,twl6030-vusim", VUSIM),
1129         TWL6025_OF_MATCH("ti,twl6025-ldo2", LDO2),
1130         TWL6025_OF_MATCH("ti,twl6025-ldo4", LDO4),
1131         TWL6025_OF_MATCH("ti,twl6025-ldo3", LDO3),
1132         TWL6025_OF_MATCH("ti,twl6025-ldo5", LDO5),
1133         TWL6025_OF_MATCH("ti,twl6025-ldo1", LDO1),
1134         TWL6025_OF_MATCH("ti,twl6025-ldo7", LDO7),
1135         TWL6025_OF_MATCH("ti,twl6025-ldo6", LDO6),
1136         TWL6025_OF_MATCH("ti,twl6025-ldoln", LDOLN),
1137         TWL6025_OF_MATCH("ti,twl6025-ldousb", LDOUSB),
1138         TWLFIXED_OF_MATCH("ti,twl4030-vintana2", VINTANA2),
1139         TWLFIXED_OF_MATCH("ti,twl4030-vintdig", VINTDIG),
1140         TWLFIXED_OF_MATCH("ti,twl4030-vusb1v5", VUSB1V5),
1141         TWLFIXED_OF_MATCH("ti,twl4030-vusb1v8", VUSB1V8),
1142         TWLFIXED_OF_MATCH("ti,twl4030-vusb3v1", VUSB3V1),
1143         TWLFIXED_OF_MATCH("ti,twl6030-vana", VANA),
1144         TWLFIXED_OF_MATCH("ti,twl6030-vcxio", VCXIO),
1145         TWLFIXED_OF_MATCH("ti,twl6030-vdac", VDAC),
1146         TWLFIXED_OF_MATCH("ti,twl6030-vusb", VUSB),
1147         TWLFIXED_OF_MATCH("ti,twl6030-v1v8", V1V8),
1148         TWLFIXED_OF_MATCH("ti,twl6030-v2v1", V2V1),
1149         TWLRES_OF_MATCH("ti,twl6030-clk32kg", CLK32KG),
1150         TWLSMPS_OF_MATCH("ti,twl6025-smps3", SMPS3),
1151         TWLSMPS_OF_MATCH("ti,twl6025-smps4", SMPS4),
1152         TWLSMPS_OF_MATCH("ti,twl6025-vio", VIO),
1153         {},
1154 };
1155 MODULE_DEVICE_TABLE(of, twl_of_match);
1156
1157 static int __devinit twlreg_probe(struct platform_device *pdev)
1158 {
1159         int                             i, id;
1160         struct twlreg_info              *info;
1161         struct regulator_init_data      *initdata;
1162         struct regulation_constraints   *c;
1163         struct regulator_dev            *rdev;
1164         struct twl_regulator_driver_data        *drvdata;
1165         const struct of_device_id       *match;
1166         struct regulator_config         config = { };
1167
1168         match = of_match_device(twl_of_match, &pdev->dev);
1169         if (match) {
1170                 info = match->data;
1171                 id = info->desc.id;
1172                 initdata = of_get_regulator_init_data(&pdev->dev,
1173                                                       pdev->dev.of_node);
1174                 drvdata = NULL;
1175         } else {
1176                 id = pdev->id;
1177                 initdata = pdev->dev.platform_data;
1178                 for (i = 0, info = NULL; i < ARRAY_SIZE(twl_of_match); i++) {
1179                         info = twl_of_match[i].data;
1180                         if (info && info->desc.id == id)
1181                                 break;
1182                 }
1183                 if (i == ARRAY_SIZE(twl_of_match))
1184                         return -ENODEV;
1185
1186                 drvdata = initdata->driver_data;
1187                 if (!drvdata)
1188                         return -EINVAL;
1189         }
1190
1191         if (!info)
1192                 return -ENODEV;
1193
1194         if (!initdata)
1195                 return -EINVAL;
1196
1197         if (drvdata) {
1198                 /* copy the driver data into regulator data */
1199                 info->features = drvdata->features;
1200                 info->data = drvdata->data;
1201                 info->set_voltage = drvdata->set_voltage;
1202                 info->get_voltage = drvdata->get_voltage;
1203         }
1204
1205         /* Constrain board-specific capabilities according to what
1206          * this driver and the chip itself can actually do.
1207          */
1208         c = &initdata->constraints;
1209         c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY;
1210         c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE
1211                                 | REGULATOR_CHANGE_MODE
1212                                 | REGULATOR_CHANGE_STATUS;
1213         switch (id) {
1214         case TWL4030_REG_VIO:
1215         case TWL4030_REG_VDD1:
1216         case TWL4030_REG_VDD2:
1217         case TWL4030_REG_VPLL1:
1218         case TWL4030_REG_VINTANA1:
1219         case TWL4030_REG_VINTANA2:
1220         case TWL4030_REG_VINTDIG:
1221                 c->always_on = true;
1222                 break;
1223         default:
1224                 break;
1225         }
1226
1227         switch (id) {
1228         case TWL6025_REG_SMPS3:
1229                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS3)
1230                         info->flags |= SMPS_EXTENDED_EN;
1231                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS3)
1232                         info->flags |= SMPS_OFFSET_EN;
1233                 break;
1234         case TWL6025_REG_SMPS4:
1235                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS4)
1236                         info->flags |= SMPS_EXTENDED_EN;
1237                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS4)
1238                         info->flags |= SMPS_OFFSET_EN;
1239                 break;
1240         case TWL6025_REG_VIO:
1241                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_VIO)
1242                         info->flags |= SMPS_EXTENDED_EN;
1243                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_VIO)
1244                         info->flags |= SMPS_OFFSET_EN;
1245                 break;
1246         }
1247
1248         config.dev = &pdev->dev;
1249         config.init_data = initdata;
1250         config.driver_data = info;
1251         config.of_node = pdev->dev.of_node;
1252
1253         rdev = regulator_register(&info->desc, &config);
1254         if (IS_ERR(rdev)) {
1255                 dev_err(&pdev->dev, "can't register %s, %ld\n",
1256                                 info->desc.name, PTR_ERR(rdev));
1257                 return PTR_ERR(rdev);
1258         }
1259         platform_set_drvdata(pdev, rdev);
1260
1261         if (twl_class_is_4030())
1262                 twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_REMAP,
1263                                                 info->remap);
1264
1265         /* NOTE:  many regulators support short-circuit IRQs (presentable
1266          * as REGULATOR_OVER_CURRENT notifications?) configured via:
1267          *  - SC_CONFIG
1268          *  - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4)
1269          *  - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2)
1270          *  - IT_CONFIG
1271          */
1272
1273         return 0;
1274 }
1275
1276 static int __devexit twlreg_remove(struct platform_device *pdev)
1277 {
1278         regulator_unregister(platform_get_drvdata(pdev));
1279         return 0;
1280 }
1281
1282 MODULE_ALIAS("platform:twl_reg");
1283
1284 static struct platform_driver twlreg_driver = {
1285         .probe          = twlreg_probe,
1286         .remove         = __devexit_p(twlreg_remove),
1287         /* NOTE: short name, to work around driver model truncation of
1288          * "twl_regulator.12" (and friends) to "twl_regulator.1".
1289          */
1290         .driver  = {
1291                 .name  = "twl_reg",
1292                 .owner = THIS_MODULE,
1293                 .of_match_table = of_match_ptr(twl_of_match),
1294         },
1295 };
1296
1297 static int __init twlreg_init(void)
1298 {
1299         return platform_driver_register(&twlreg_driver);
1300 }
1301 subsys_initcall(twlreg_init);
1302
1303 static void __exit twlreg_exit(void)
1304 {
1305         platform_driver_unregister(&twlreg_driver);
1306 }
1307 module_exit(twlreg_exit)
1308
1309 MODULE_DESCRIPTION("TWL regulator driver");
1310 MODULE_LICENSE("GPL");