regulator: twl: Fix the formula to calculate vsel and voltage for twl6030ldo
[linux-3.10.git] / drivers / regulator / twl-regulator.c
1 /*
2  * twl-regulator.c -- support regulators in twl4030/twl6030 family chips
3  *
4  * Copyright (C) 2008 David Brownell
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  */
11
12 #include <linux/module.h>
13 #include <linux/init.h>
14 #include <linux/err.h>
15 #include <linux/platform_device.h>
16 #include <linux/of.h>
17 #include <linux/of_device.h>
18 #include <linux/regulator/driver.h>
19 #include <linux/regulator/machine.h>
20 #include <linux/regulator/of_regulator.h>
21 #include <linux/i2c/twl.h>
22
23
24 /*
25  * The TWL4030/TW5030/TPS659x0/TWL6030 family chips include power management, a
26  * USB OTG transceiver, an RTC, ADC, PWM, and lots more.  Some versions
27  * include an audio codec, battery charger, and more voltage regulators.
28  * These chips are often used in OMAP-based systems.
29  *
30  * This driver implements software-based resource control for various
31  * voltage regulators.  This is usually augmented with state machine
32  * based control.
33  */
34
35 struct twlreg_info {
36         /* start of regulator's PM_RECEIVER control register bank */
37         u8                      base;
38
39         /* twl resource ID, for resource control state machine */
40         u8                      id;
41
42         /* voltage in mV = table[VSEL]; table_len must be a power-of-two */
43         u8                      table_len;
44         const u16               *table;
45
46         /* State REMAP default configuration */
47         u8                      remap;
48
49         /* chip constraints on regulator behavior */
50         u16                     min_mV;
51         u16                     max_mV;
52
53         u8                      flags;
54
55         /* used by regulator core */
56         struct regulator_desc   desc;
57
58         /* chip specific features */
59         unsigned long           features;
60
61         /*
62          * optional override functions for voltage set/get
63          * these are currently only used for SMPS regulators
64          */
65         int                     (*get_voltage)(void *data);
66         int                     (*set_voltage)(void *data, int target_uV);
67
68         /* data passed from board for external get/set voltage */
69         void                    *data;
70 };
71
72
73 /* LDO control registers ... offset is from the base of its register bank.
74  * The first three registers of all power resource banks help hardware to
75  * manage the various resource groups.
76  */
77 /* Common offset in TWL4030/6030 */
78 #define VREG_GRP                0
79 /* TWL4030 register offsets */
80 #define VREG_TYPE               1
81 #define VREG_REMAP              2
82 #define VREG_DEDICATED          3       /* LDO control */
83 #define VREG_VOLTAGE_SMPS_4030  9
84 /* TWL6030 register offsets */
85 #define VREG_TRANS              1
86 #define VREG_STATE              2
87 #define VREG_VOLTAGE            3
88 #define VREG_VOLTAGE_SMPS       4
89 /* TWL6030 Misc register offsets */
90 #define VREG_BC_ALL             1
91 #define VREG_BC_REF             2
92 #define VREG_BC_PROC            3
93 #define VREG_BC_CLK_RST         4
94
95 /* TWL6030 LDO register values for CFG_STATE */
96 #define TWL6030_CFG_STATE_OFF   0x00
97 #define TWL6030_CFG_STATE_ON    0x01
98 #define TWL6030_CFG_STATE_OFF2  0x02
99 #define TWL6030_CFG_STATE_SLEEP 0x03
100 #define TWL6030_CFG_STATE_GRP_SHIFT     5
101 #define TWL6030_CFG_STATE_APP_SHIFT     2
102 #define TWL6030_CFG_STATE_APP_MASK      (0x03 << TWL6030_CFG_STATE_APP_SHIFT)
103 #define TWL6030_CFG_STATE_APP(v)        (((v) & TWL6030_CFG_STATE_APP_MASK) >>\
104                                                 TWL6030_CFG_STATE_APP_SHIFT)
105
106 /* Flags for SMPS Voltage reading */
107 #define SMPS_OFFSET_EN          BIT(0)
108 #define SMPS_EXTENDED_EN        BIT(1)
109
110 /* twl6025 SMPS EPROM values */
111 #define TWL6030_SMPS_OFFSET             0xB0
112 #define TWL6030_SMPS_MULT               0xB3
113 #define SMPS_MULTOFFSET_SMPS4   BIT(0)
114 #define SMPS_MULTOFFSET_VIO     BIT(1)
115 #define SMPS_MULTOFFSET_SMPS3   BIT(6)
116
117 static inline int
118 twlreg_read(struct twlreg_info *info, unsigned slave_subgp, unsigned offset)
119 {
120         u8 value;
121         int status;
122
123         status = twl_i2c_read_u8(slave_subgp,
124                         &value, info->base + offset);
125         return (status < 0) ? status : value;
126 }
127
128 static inline int
129 twlreg_write(struct twlreg_info *info, unsigned slave_subgp, unsigned offset,
130                                                  u8 value)
131 {
132         return twl_i2c_write_u8(slave_subgp,
133                         value, info->base + offset);
134 }
135
136 /*----------------------------------------------------------------------*/
137
138 /* generic power resource operations, which work on all regulators */
139
140 static int twlreg_grp(struct regulator_dev *rdev)
141 {
142         return twlreg_read(rdev_get_drvdata(rdev), TWL_MODULE_PM_RECEIVER,
143                                                                  VREG_GRP);
144 }
145
146 /*
147  * Enable/disable regulators by joining/leaving the P1 (processor) group.
148  * We assume nobody else is updating the DEV_GRP registers.
149  */
150 /* definition for 4030 family */
151 #define P3_GRP_4030     BIT(7)          /* "peripherals" */
152 #define P2_GRP_4030     BIT(6)          /* secondary processor, modem, etc */
153 #define P1_GRP_4030     BIT(5)          /* CPU/Linux */
154 /* definition for 6030 family */
155 #define P3_GRP_6030     BIT(2)          /* secondary processor, modem, etc */
156 #define P2_GRP_6030     BIT(1)          /* "peripherals" */
157 #define P1_GRP_6030     BIT(0)          /* CPU/Linux */
158
159 static int twl4030reg_is_enabled(struct regulator_dev *rdev)
160 {
161         int     state = twlreg_grp(rdev);
162
163         if (state < 0)
164                 return state;
165
166         return state & P1_GRP_4030;
167 }
168
169 static int twl6030reg_is_enabled(struct regulator_dev *rdev)
170 {
171         struct twlreg_info      *info = rdev_get_drvdata(rdev);
172         int                     grp = 0, val;
173
174         if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS))) {
175                 grp = twlreg_grp(rdev);
176                 if (grp < 0)
177                         return grp;
178                 grp &= P1_GRP_6030;
179         } else {
180                 grp = 1;
181         }
182
183         val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
184         val = TWL6030_CFG_STATE_APP(val);
185
186         return grp && (val == TWL6030_CFG_STATE_ON);
187 }
188
189 static int twl4030reg_enable(struct regulator_dev *rdev)
190 {
191         struct twlreg_info      *info = rdev_get_drvdata(rdev);
192         int                     grp;
193         int                     ret;
194
195         grp = twlreg_grp(rdev);
196         if (grp < 0)
197                 return grp;
198
199         grp |= P1_GRP_4030;
200
201         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp);
202
203         return ret;
204 }
205
206 static int twl6030reg_enable(struct regulator_dev *rdev)
207 {
208         struct twlreg_info      *info = rdev_get_drvdata(rdev);
209         int                     grp = 0;
210         int                     ret;
211
212         if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS)))
213                 grp = twlreg_grp(rdev);
214         if (grp < 0)
215                 return grp;
216
217         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
218                         grp << TWL6030_CFG_STATE_GRP_SHIFT |
219                         TWL6030_CFG_STATE_ON);
220         return ret;
221 }
222
223 static int twl4030reg_disable(struct regulator_dev *rdev)
224 {
225         struct twlreg_info      *info = rdev_get_drvdata(rdev);
226         int                     grp;
227         int                     ret;
228
229         grp = twlreg_grp(rdev);
230         if (grp < 0)
231                 return grp;
232
233         grp &= ~(P1_GRP_4030 | P2_GRP_4030 | P3_GRP_4030);
234
235         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp);
236
237         return ret;
238 }
239
240 static int twl6030reg_disable(struct regulator_dev *rdev)
241 {
242         struct twlreg_info      *info = rdev_get_drvdata(rdev);
243         int                     grp = 0;
244         int                     ret;
245
246         if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS)))
247                 grp = P1_GRP_6030 | P2_GRP_6030 | P3_GRP_6030;
248
249         /* For 6030, set the off state for all grps enabled */
250         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
251                         (grp) << TWL6030_CFG_STATE_GRP_SHIFT |
252                         TWL6030_CFG_STATE_OFF);
253
254         return ret;
255 }
256
257 static int twl4030reg_get_status(struct regulator_dev *rdev)
258 {
259         int     state = twlreg_grp(rdev);
260
261         if (state < 0)
262                 return state;
263         state &= 0x0f;
264
265         /* assume state != WARM_RESET; we'd not be running...  */
266         if (!state)
267                 return REGULATOR_STATUS_OFF;
268         return (state & BIT(3))
269                 ? REGULATOR_STATUS_NORMAL
270                 : REGULATOR_STATUS_STANDBY;
271 }
272
273 static int twl6030reg_get_status(struct regulator_dev *rdev)
274 {
275         struct twlreg_info      *info = rdev_get_drvdata(rdev);
276         int                     val;
277
278         val = twlreg_grp(rdev);
279         if (val < 0)
280                 return val;
281
282         val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
283
284         switch (TWL6030_CFG_STATE_APP(val)) {
285         case TWL6030_CFG_STATE_ON:
286                 return REGULATOR_STATUS_NORMAL;
287
288         case TWL6030_CFG_STATE_SLEEP:
289                 return REGULATOR_STATUS_STANDBY;
290
291         case TWL6030_CFG_STATE_OFF:
292         case TWL6030_CFG_STATE_OFF2:
293         default:
294                 break;
295         }
296
297         return REGULATOR_STATUS_OFF;
298 }
299
300 static int twl4030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
301 {
302         struct twlreg_info      *info = rdev_get_drvdata(rdev);
303         unsigned                message;
304         int                     status;
305
306         /* We can only set the mode through state machine commands... */
307         switch (mode) {
308         case REGULATOR_MODE_NORMAL:
309                 message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_ACTIVE);
310                 break;
311         case REGULATOR_MODE_STANDBY:
312                 message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_SLEEP);
313                 break;
314         default:
315                 return -EINVAL;
316         }
317
318         /* Ensure the resource is associated with some group */
319         status = twlreg_grp(rdev);
320         if (status < 0)
321                 return status;
322         if (!(status & (P3_GRP_4030 | P2_GRP_4030 | P1_GRP_4030)))
323                 return -EACCES;
324
325         status = twl_i2c_write_u8(TWL_MODULE_PM_MASTER,
326                         message >> 8, TWL4030_PM_MASTER_PB_WORD_MSB);
327         if (status < 0)
328                 return status;
329
330         return twl_i2c_write_u8(TWL_MODULE_PM_MASTER,
331                         message & 0xff, TWL4030_PM_MASTER_PB_WORD_LSB);
332 }
333
334 static int twl6030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
335 {
336         struct twlreg_info      *info = rdev_get_drvdata(rdev);
337         int grp = 0;
338         int val;
339
340         if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS)))
341                 grp = twlreg_grp(rdev);
342
343         if (grp < 0)
344                 return grp;
345
346         /* Compose the state register settings */
347         val = grp << TWL6030_CFG_STATE_GRP_SHIFT;
348         /* We can only set the mode through state machine commands... */
349         switch (mode) {
350         case REGULATOR_MODE_NORMAL:
351                 val |= TWL6030_CFG_STATE_ON;
352                 break;
353         case REGULATOR_MODE_STANDBY:
354                 val |= TWL6030_CFG_STATE_SLEEP;
355                 break;
356
357         default:
358                 return -EINVAL;
359         }
360
361         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, val);
362 }
363
364 /*----------------------------------------------------------------------*/
365
366 /*
367  * Support for adjustable-voltage LDOs uses a four bit (or less) voltage
368  * select field in its control register.   We use tables indexed by VSEL
369  * to record voltages in milliVolts.  (Accuracy is about three percent.)
370  *
371  * Note that VSEL values for VAUX2 changed in twl5030 and newer silicon;
372  * currently handled by listing two slightly different VAUX2 regulators,
373  * only one of which will be configured.
374  *
375  * VSEL values documented as "TI cannot support these values" are flagged
376  * in these tables as UNSUP() values; we normally won't assign them.
377  *
378  * VAUX3 at 3V is incorrectly listed in some TI manuals as unsupported.
379  * TI are revising the twl5030/tps659x0 specs to support that 3.0V setting.
380  */
381 #define UNSUP_MASK      0x8000
382
383 #define UNSUP(x)        (UNSUP_MASK | (x))
384 #define IS_UNSUP(info, x)                       \
385         ((UNSUP_MASK & (x)) &&                  \
386          !((info)->features & TWL4030_ALLOW_UNSUPPORTED))
387 #define LDO_MV(x)       (~UNSUP_MASK & (x))
388
389
390 static const u16 VAUX1_VSEL_table[] = {
391         UNSUP(1500), UNSUP(1800), 2500, 2800,
392         3000, 3000, 3000, 3000,
393 };
394 static const u16 VAUX2_4030_VSEL_table[] = {
395         UNSUP(1000), UNSUP(1000), UNSUP(1200), 1300,
396         1500, 1800, UNSUP(1850), 2500,
397         UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000),
398         UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
399 };
400 static const u16 VAUX2_VSEL_table[] = {
401         1700, 1700, 1900, 1300,
402         1500, 1800, 2000, 2500,
403         2100, 2800, 2200, 2300,
404         2400, 2400, 2400, 2400,
405 };
406 static const u16 VAUX3_VSEL_table[] = {
407         1500, 1800, 2500, 2800,
408         3000, 3000, 3000, 3000,
409 };
410 static const u16 VAUX4_VSEL_table[] = {
411         700, 1000, 1200, UNSUP(1300),
412         1500, 1800, UNSUP(1850), 2500,
413         UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000),
414         UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
415 };
416 static const u16 VMMC1_VSEL_table[] = {
417         1850, 2850, 3000, 3150,
418 };
419 static const u16 VMMC2_VSEL_table[] = {
420         UNSUP(1000), UNSUP(1000), UNSUP(1200), UNSUP(1300),
421         UNSUP(1500), UNSUP(1800), 1850, UNSUP(2500),
422         2600, 2800, 2850, 3000,
423         3150, 3150, 3150, 3150,
424 };
425 static const u16 VPLL1_VSEL_table[] = {
426         1000, 1200, 1300, 1800,
427         UNSUP(2800), UNSUP(3000), UNSUP(3000), UNSUP(3000),
428 };
429 static const u16 VPLL2_VSEL_table[] = {
430         700, 1000, 1200, 1300,
431         UNSUP(1500), 1800, UNSUP(1850), UNSUP(2500),
432         UNSUP(2600), UNSUP(2800), UNSUP(2850), UNSUP(3000),
433         UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
434 };
435 static const u16 VSIM_VSEL_table[] = {
436         UNSUP(1000), UNSUP(1200), UNSUP(1300), 1800,
437         2800, 3000, 3000, 3000,
438 };
439 static const u16 VDAC_VSEL_table[] = {
440         1200, 1300, 1800, 1800,
441 };
442 static const u16 VDD1_VSEL_table[] = {
443         800, 1450,
444 };
445 static const u16 VDD2_VSEL_table[] = {
446         800, 1450, 1500,
447 };
448 static const u16 VIO_VSEL_table[] = {
449         1800, 1850,
450 };
451 static const u16 VINTANA2_VSEL_table[] = {
452         2500, 2750,
453 };
454
455 static int twl4030ldo_list_voltage(struct regulator_dev *rdev, unsigned index)
456 {
457         struct twlreg_info      *info = rdev_get_drvdata(rdev);
458         int                     mV = info->table[index];
459
460         return IS_UNSUP(info, mV) ? 0 : (LDO_MV(mV) * 1000);
461 }
462
463 static int
464 twl4030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
465 {
466         struct twlreg_info      *info = rdev_get_drvdata(rdev);
467
468         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE,
469                             selector);
470 }
471
472 static int twl4030ldo_get_voltage(struct regulator_dev *rdev)
473 {
474         struct twlreg_info      *info = rdev_get_drvdata(rdev);
475         int             vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER,
476                                                                 VREG_VOLTAGE);
477
478         if (vsel < 0)
479                 return vsel;
480
481         vsel &= info->table_len - 1;
482         return LDO_MV(info->table[vsel]) * 1000;
483 }
484
485 static struct regulator_ops twl4030ldo_ops = {
486         .list_voltage   = twl4030ldo_list_voltage,
487
488         .set_voltage_sel = twl4030ldo_set_voltage_sel,
489         .get_voltage    = twl4030ldo_get_voltage,
490
491         .enable         = twl4030reg_enable,
492         .disable        = twl4030reg_disable,
493         .is_enabled     = twl4030reg_is_enabled,
494
495         .set_mode       = twl4030reg_set_mode,
496
497         .get_status     = twl4030reg_get_status,
498 };
499
500 static int
501 twl4030smps_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV,
502                         unsigned *selector)
503 {
504         struct twlreg_info *info = rdev_get_drvdata(rdev);
505         int vsel = DIV_ROUND_UP(min_uV - 600000, 12500);
506
507         if (info->set_voltage) {
508                 return info->set_voltage(info->data, min_uV);
509         } else {
510                 twlreg_write(info, TWL_MODULE_PM_RECEIVER,
511                         VREG_VOLTAGE_SMPS_4030, vsel);
512         }
513
514         return 0;
515 }
516
517 static int twl4030smps_get_voltage(struct regulator_dev *rdev)
518 {
519         struct twlreg_info *info = rdev_get_drvdata(rdev);
520         int vsel;
521
522         if (info->get_voltage)
523                 return info->get_voltage(info->data);
524
525         vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER,
526                 VREG_VOLTAGE_SMPS_4030);
527
528         return vsel * 12500 + 600000;
529 }
530
531 static struct regulator_ops twl4030smps_ops = {
532         .set_voltage    = twl4030smps_set_voltage,
533         .get_voltage    = twl4030smps_get_voltage,
534 };
535
536 static int twl6030coresmps_set_voltage(struct regulator_dev *rdev, int min_uV,
537         int max_uV, unsigned *selector)
538 {
539         struct twlreg_info *info = rdev_get_drvdata(rdev);
540
541         if (info->set_voltage)
542                 return info->set_voltage(info->data, min_uV);
543
544         return -ENODEV;
545 }
546
547 static int twl6030coresmps_get_voltage(struct regulator_dev *rdev)
548 {
549         struct twlreg_info *info = rdev_get_drvdata(rdev);
550
551         if (info->get_voltage)
552                 return info->get_voltage(info->data);
553
554         return -ENODEV;
555 }
556
557 static struct regulator_ops twl6030coresmps_ops = {
558         .set_voltage    = twl6030coresmps_set_voltage,
559         .get_voltage    = twl6030coresmps_get_voltage,
560 };
561
562 static int
563 twl6030ldo_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV,
564                        unsigned *selector)
565 {
566         struct twlreg_info      *info = rdev_get_drvdata(rdev);
567         int                     vsel;
568
569         if ((min_uV/1000 < info->min_mV) || (max_uV/1000 > info->max_mV))
570                 return -EDOM;
571
572         vsel = DIV_ROUND_UP(min_uV - rdev->desc->min_uV, rdev->desc->uV_step);
573         *selector = vsel;
574
575         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE, vsel);
576 }
577
578 static int twl6030ldo_get_voltage(struct regulator_dev *rdev)
579 {
580         struct twlreg_info      *info = rdev_get_drvdata(rdev);
581         int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE);
582
583         if (vsel < 0)
584                 return vsel;
585
586         return rdev->desc->min_uV + vsel * rdev->desc->uV_step;
587 }
588
589 static struct regulator_ops twl6030ldo_ops = {
590         .list_voltage   = regulator_list_voltage_linear,
591
592         .set_voltage    = twl6030ldo_set_voltage,
593         .get_voltage    = twl6030ldo_get_voltage,
594
595         .enable         = twl6030reg_enable,
596         .disable        = twl6030reg_disable,
597         .is_enabled     = twl6030reg_is_enabled,
598
599         .set_mode       = twl6030reg_set_mode,
600
601         .get_status     = twl6030reg_get_status,
602 };
603
604 /*----------------------------------------------------------------------*/
605
606 /*
607  * Fixed voltage LDOs don't have a VSEL field to update.
608  */
609 static int twlfixed_list_voltage(struct regulator_dev *rdev, unsigned index)
610 {
611         struct twlreg_info      *info = rdev_get_drvdata(rdev);
612
613         return info->min_mV * 1000;
614 }
615
616 static int twlfixed_get_voltage(struct regulator_dev *rdev)
617 {
618         struct twlreg_info      *info = rdev_get_drvdata(rdev);
619
620         return info->min_mV * 1000;
621 }
622
623 static struct regulator_ops twl4030fixed_ops = {
624         .list_voltage   = twlfixed_list_voltage,
625
626         .get_voltage    = twlfixed_get_voltage,
627
628         .enable         = twl4030reg_enable,
629         .disable        = twl4030reg_disable,
630         .is_enabled     = twl4030reg_is_enabled,
631
632         .set_mode       = twl4030reg_set_mode,
633
634         .get_status     = twl4030reg_get_status,
635 };
636
637 static struct regulator_ops twl6030fixed_ops = {
638         .list_voltage   = twlfixed_list_voltage,
639
640         .get_voltage    = twlfixed_get_voltage,
641
642         .enable         = twl6030reg_enable,
643         .disable        = twl6030reg_disable,
644         .is_enabled     = twl6030reg_is_enabled,
645
646         .set_mode       = twl6030reg_set_mode,
647
648         .get_status     = twl6030reg_get_status,
649 };
650
651 static struct regulator_ops twl6030_fixed_resource = {
652         .enable         = twl6030reg_enable,
653         .disable        = twl6030reg_disable,
654         .is_enabled     = twl6030reg_is_enabled,
655         .get_status     = twl6030reg_get_status,
656 };
657
658 /*
659  * SMPS status and control
660  */
661
662 static int twl6030smps_list_voltage(struct regulator_dev *rdev, unsigned index)
663 {
664         struct twlreg_info      *info = rdev_get_drvdata(rdev);
665
666         int voltage = 0;
667
668         switch (info->flags) {
669         case SMPS_OFFSET_EN:
670                 voltage = 100000;
671                 /* fall through */
672         case 0:
673                 switch (index) {
674                 case 0:
675                         voltage = 0;
676                         break;
677                 case 58:
678                         voltage = 1350 * 1000;
679                         break;
680                 case 59:
681                         voltage = 1500 * 1000;
682                         break;
683                 case 60:
684                         voltage = 1800 * 1000;
685                         break;
686                 case 61:
687                         voltage = 1900 * 1000;
688                         break;
689                 case 62:
690                         voltage = 2100 * 1000;
691                         break;
692                 default:
693                         voltage += (600000 + (12500 * (index - 1)));
694                 }
695                 break;
696         case SMPS_EXTENDED_EN:
697                 switch (index) {
698                 case 0:
699                         voltage = 0;
700                         break;
701                 case 58:
702                         voltage = 2084 * 1000;
703                         break;
704                 case 59:
705                         voltage = 2315 * 1000;
706                         break;
707                 case 60:
708                         voltage = 2778 * 1000;
709                         break;
710                 case 61:
711                         voltage = 2932 * 1000;
712                         break;
713                 case 62:
714                         voltage = 3241 * 1000;
715                         break;
716                 default:
717                         voltage = (1852000 + (38600 * (index - 1)));
718                 }
719                 break;
720         case SMPS_OFFSET_EN | SMPS_EXTENDED_EN:
721                 switch (index) {
722                 case 0:
723                         voltage = 0;
724                         break;
725                 case 58:
726                         voltage = 4167 * 1000;
727                         break;
728                 case 59:
729                         voltage = 2315 * 1000;
730                         break;
731                 case 60:
732                         voltage = 2778 * 1000;
733                         break;
734                 case 61:
735                         voltage = 2932 * 1000;
736                         break;
737                 case 62:
738                         voltage = 3241 * 1000;
739                         break;
740                 default:
741                         voltage = (2161000 + (38600 * (index - 1)));
742                 }
743                 break;
744         }
745
746         return voltage;
747 }
748
749 static int
750 twl6030smps_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV,
751                         unsigned int *selector)
752 {
753         struct twlreg_info      *info = rdev_get_drvdata(rdev);
754         int     vsel = 0;
755
756         switch (info->flags) {
757         case 0:
758                 if (min_uV == 0)
759                         vsel = 0;
760                 else if ((min_uV >= 600000) && (min_uV <= 1300000)) {
761                         int calc_uV;
762                         vsel = DIV_ROUND_UP(min_uV - 600000, 12500);
763                         vsel++;
764                         calc_uV = twl6030smps_list_voltage(rdev, vsel);
765                         if (calc_uV > max_uV)
766                                 return -EINVAL;
767                 }
768                 /* Values 1..57 for vsel are linear and can be calculated
769                  * values 58..62 are non linear.
770                  */
771                 else if ((min_uV > 1900000) && (max_uV >= 2100000))
772                         vsel = 62;
773                 else if ((min_uV > 1800000) && (max_uV >= 1900000))
774                         vsel = 61;
775                 else if ((min_uV > 1500000) && (max_uV >= 1800000))
776                         vsel = 60;
777                 else if ((min_uV > 1350000) && (max_uV >= 1500000))
778                         vsel = 59;
779                 else if ((min_uV > 1300000) && (max_uV >= 1350000))
780                         vsel = 58;
781                 else
782                         return -EINVAL;
783                 break;
784         case SMPS_OFFSET_EN:
785                 if (min_uV == 0)
786                         vsel = 0;
787                 else if ((min_uV >= 700000) && (min_uV <= 1420000)) {
788                         int calc_uV;
789                         vsel = DIV_ROUND_UP(min_uV - 700000, 12500);
790                         vsel++;
791                         calc_uV = twl6030smps_list_voltage(rdev, vsel);
792                         if (calc_uV > max_uV)
793                                 return -EINVAL;
794                 }
795                 /* Values 1..57 for vsel are linear and can be calculated
796                  * values 58..62 are non linear.
797                  */
798                 else if ((min_uV > 1900000) && (max_uV >= 2100000))
799                         vsel = 62;
800                 else if ((min_uV > 1800000) && (max_uV >= 1900000))
801                         vsel = 61;
802                 else if ((min_uV > 1350000) && (max_uV >= 1800000))
803                         vsel = 60;
804                 else if ((min_uV > 1350000) && (max_uV >= 1500000))
805                         vsel = 59;
806                 else if ((min_uV > 1300000) && (max_uV >= 1350000))
807                         vsel = 58;
808                 else
809                         return -EINVAL;
810                 break;
811         case SMPS_EXTENDED_EN:
812                 if (min_uV == 0) {
813                         vsel = 0;
814                 } else if ((min_uV >= 1852000) && (max_uV <= 4013600)) {
815                         vsel = DIV_ROUND_UP(min_uV - 1852000, 38600);
816                         vsel++;
817                 }
818                 break;
819         case SMPS_OFFSET_EN|SMPS_EXTENDED_EN:
820                 if (min_uV == 0) {
821                         vsel = 0;
822                 } else if ((min_uV >= 2161000) && (max_uV <= 4321000)) {
823                         vsel = DIV_ROUND_UP(min_uV - 2161000, 38600);
824                         vsel++;
825                 }
826                 break;
827         }
828
829         *selector = vsel;
830
831         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS,
832                                                         vsel);
833 }
834
835 static int twl6030smps_get_voltage_sel(struct regulator_dev *rdev)
836 {
837         struct twlreg_info      *info = rdev_get_drvdata(rdev);
838
839         return twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS);
840 }
841
842 static struct regulator_ops twlsmps_ops = {
843         .list_voltage           = twl6030smps_list_voltage,
844
845         .set_voltage            = twl6030smps_set_voltage,
846         .get_voltage_sel        = twl6030smps_get_voltage_sel,
847
848         .enable                 = twl6030reg_enable,
849         .disable                = twl6030reg_disable,
850         .is_enabled             = twl6030reg_is_enabled,
851
852         .set_mode               = twl6030reg_set_mode,
853
854         .get_status             = twl6030reg_get_status,
855 };
856
857 /*----------------------------------------------------------------------*/
858
859 #define TWL4030_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
860                         remap_conf) \
861                 TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
862                         remap_conf, TWL4030, twl4030fixed_ops)
863 #define TWL6030_FIXED_LDO(label, offset, mVolts, turnon_delay) \
864                 TWL_FIXED_LDO(label, offset, mVolts, 0x0, turnon_delay, \
865                         0x0, TWL6030, twl6030fixed_ops)
866
867 #define TWL4030_ADJUSTABLE_LDO(label, offset, num, turnon_delay, remap_conf) \
868 static struct twlreg_info TWL4030_INFO_##label = { \
869         .base = offset, \
870         .id = num, \
871         .table_len = ARRAY_SIZE(label##_VSEL_table), \
872         .table = label##_VSEL_table, \
873         .remap = remap_conf, \
874         .desc = { \
875                 .name = #label, \
876                 .id = TWL4030_REG_##label, \
877                 .n_voltages = ARRAY_SIZE(label##_VSEL_table), \
878                 .ops = &twl4030ldo_ops, \
879                 .type = REGULATOR_VOLTAGE, \
880                 .owner = THIS_MODULE, \
881                 .enable_time = turnon_delay, \
882                 }, \
883         }
884
885 #define TWL4030_ADJUSTABLE_SMPS(label, offset, num, turnon_delay, remap_conf) \
886 static struct twlreg_info TWL4030_INFO_##label = { \
887         .base = offset, \
888         .id = num, \
889         .remap = remap_conf, \
890         .desc = { \
891                 .name = #label, \
892                 .id = TWL4030_REG_##label, \
893                 .ops = &twl4030smps_ops, \
894                 .type = REGULATOR_VOLTAGE, \
895                 .owner = THIS_MODULE, \
896                 .enable_time = turnon_delay, \
897                 }, \
898         }
899
900 #define TWL6030_ADJUSTABLE_SMPS(label) \
901 static struct twlreg_info TWL6030_INFO_##label = { \
902         .desc = { \
903                 .name = #label, \
904                 .id = TWL6030_REG_##label, \
905                 .ops = &twl6030coresmps_ops, \
906                 .type = REGULATOR_VOLTAGE, \
907                 .owner = THIS_MODULE, \
908                 }, \
909         }
910
911 #define TWL6030_ADJUSTABLE_LDO(label, offset, min_mVolts, max_mVolts) \
912 static struct twlreg_info TWL6030_INFO_##label = { \
913         .base = offset, \
914         .min_mV = min_mVolts, \
915         .max_mV = max_mVolts, \
916         .desc = { \
917                 .name = #label, \
918                 .id = TWL6030_REG_##label, \
919                 .n_voltages = (max_mVolts - min_mVolts)/100 + 1, \
920                 .ops = &twl6030ldo_ops, \
921                 .type = REGULATOR_VOLTAGE, \
922                 .owner = THIS_MODULE, \
923                 .min_uV = min_mVolts * 1000, \
924                 .uV_step = 100 * 1000, \
925                 }, \
926         }
927
928 #define TWL6025_ADJUSTABLE_LDO(label, offset, min_mVolts, max_mVolts) \
929 static struct twlreg_info TWL6025_INFO_##label = { \
930         .base = offset, \
931         .min_mV = min_mVolts, \
932         .max_mV = max_mVolts, \
933         .desc = { \
934                 .name = #label, \
935                 .id = TWL6025_REG_##label, \
936                 .n_voltages = ((max_mVolts - min_mVolts)/100) + 1, \
937                 .ops = &twl6030ldo_ops, \
938                 .type = REGULATOR_VOLTAGE, \
939                 .owner = THIS_MODULE, \
940                 .min_uV = min_mVolts * 1000, \
941                 .uV_step = 100 * 1000, \
942                 }, \
943         }
944
945 #define TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, remap_conf, \
946                 family, operations) \
947 static struct twlreg_info TWLFIXED_INFO_##label = { \
948         .base = offset, \
949         .id = num, \
950         .min_mV = mVolts, \
951         .remap = remap_conf, \
952         .desc = { \
953                 .name = #label, \
954                 .id = family##_REG_##label, \
955                 .n_voltages = 1, \
956                 .ops = &operations, \
957                 .type = REGULATOR_VOLTAGE, \
958                 .owner = THIS_MODULE, \
959                 .enable_time = turnon_delay, \
960                 }, \
961         }
962
963 #define TWL6030_FIXED_RESOURCE(label, offset, turnon_delay) \
964 static struct twlreg_info TWLRES_INFO_##label = { \
965         .base = offset, \
966         .desc = { \
967                 .name = #label, \
968                 .id = TWL6030_REG_##label, \
969                 .ops = &twl6030_fixed_resource, \
970                 .type = REGULATOR_VOLTAGE, \
971                 .owner = THIS_MODULE, \
972                 .enable_time = turnon_delay, \
973                 }, \
974         }
975
976 #define TWL6025_ADJUSTABLE_SMPS(label, offset) \
977 static struct twlreg_info TWLSMPS_INFO_##label = { \
978         .base = offset, \
979         .min_mV = 600, \
980         .max_mV = 2100, \
981         .desc = { \
982                 .name = #label, \
983                 .id = TWL6025_REG_##label, \
984                 .n_voltages = 63, \
985                 .ops = &twlsmps_ops, \
986                 .type = REGULATOR_VOLTAGE, \
987                 .owner = THIS_MODULE, \
988                 }, \
989         }
990
991 /*
992  * We list regulators here if systems need some level of
993  * software control over them after boot.
994  */
995 TWL4030_ADJUSTABLE_LDO(VAUX1, 0x17, 1, 100, 0x08);
996 TWL4030_ADJUSTABLE_LDO(VAUX2_4030, 0x1b, 2, 100, 0x08);
997 TWL4030_ADJUSTABLE_LDO(VAUX2, 0x1b, 2, 100, 0x08);
998 TWL4030_ADJUSTABLE_LDO(VAUX3, 0x1f, 3, 100, 0x08);
999 TWL4030_ADJUSTABLE_LDO(VAUX4, 0x23, 4, 100, 0x08);
1000 TWL4030_ADJUSTABLE_LDO(VMMC1, 0x27, 5, 100, 0x08);
1001 TWL4030_ADJUSTABLE_LDO(VMMC2, 0x2b, 6, 100, 0x08);
1002 TWL4030_ADJUSTABLE_LDO(VPLL1, 0x2f, 7, 100, 0x00);
1003 TWL4030_ADJUSTABLE_LDO(VPLL2, 0x33, 8, 100, 0x08);
1004 TWL4030_ADJUSTABLE_LDO(VSIM, 0x37, 9, 100, 0x00);
1005 TWL4030_ADJUSTABLE_LDO(VDAC, 0x3b, 10, 100, 0x08);
1006 TWL4030_ADJUSTABLE_LDO(VINTANA2, 0x43, 12, 100, 0x08);
1007 TWL4030_ADJUSTABLE_LDO(VIO, 0x4b, 14, 1000, 0x08);
1008 TWL4030_ADJUSTABLE_SMPS(VDD1, 0x55, 15, 1000, 0x08);
1009 TWL4030_ADJUSTABLE_SMPS(VDD2, 0x63, 16, 1000, 0x08);
1010 /* VUSBCP is managed *only* by the USB subchip */
1011 /* 6030 REG with base as PMC Slave Misc : 0x0030 */
1012 /* Turnon-delay and remap configuration values for 6030 are not
1013    verified since the specification is not public */
1014 TWL6030_ADJUSTABLE_SMPS(VDD1);
1015 TWL6030_ADJUSTABLE_SMPS(VDD2);
1016 TWL6030_ADJUSTABLE_SMPS(VDD3);
1017 TWL6030_ADJUSTABLE_LDO(VAUX1_6030, 0x54, 1000, 3300);
1018 TWL6030_ADJUSTABLE_LDO(VAUX2_6030, 0x58, 1000, 3300);
1019 TWL6030_ADJUSTABLE_LDO(VAUX3_6030, 0x5c, 1000, 3300);
1020 TWL6030_ADJUSTABLE_LDO(VMMC, 0x68, 1000, 3300);
1021 TWL6030_ADJUSTABLE_LDO(VPP, 0x6c, 1000, 3300);
1022 TWL6030_ADJUSTABLE_LDO(VUSIM, 0x74, 1000, 3300);
1023 /* 6025 are renamed compared to 6030 versions */
1024 TWL6025_ADJUSTABLE_LDO(LDO2, 0x54, 1000, 3300);
1025 TWL6025_ADJUSTABLE_LDO(LDO4, 0x58, 1000, 3300);
1026 TWL6025_ADJUSTABLE_LDO(LDO3, 0x5c, 1000, 3300);
1027 TWL6025_ADJUSTABLE_LDO(LDO5, 0x68, 1000, 3300);
1028 TWL6025_ADJUSTABLE_LDO(LDO1, 0x6c, 1000, 3300);
1029 TWL6025_ADJUSTABLE_LDO(LDO7, 0x74, 1000, 3300);
1030 TWL6025_ADJUSTABLE_LDO(LDO6, 0x60, 1000, 3300);
1031 TWL6025_ADJUSTABLE_LDO(LDOLN, 0x64, 1000, 3300);
1032 TWL6025_ADJUSTABLE_LDO(LDOUSB, 0x70, 1000, 3300);
1033 TWL4030_FIXED_LDO(VINTANA2, 0x3f, 1500, 11, 100, 0x08);
1034 TWL4030_FIXED_LDO(VINTDIG, 0x47, 1500, 13, 100, 0x08);
1035 TWL4030_FIXED_LDO(VUSB1V5, 0x71, 1500, 17, 100, 0x08);
1036 TWL4030_FIXED_LDO(VUSB1V8, 0x74, 1800, 18, 100, 0x08);
1037 TWL4030_FIXED_LDO(VUSB3V1, 0x77, 3100, 19, 150, 0x08);
1038 TWL6030_FIXED_LDO(VANA, 0x50, 2100, 0);
1039 TWL6030_FIXED_LDO(VCXIO, 0x60, 1800, 0);
1040 TWL6030_FIXED_LDO(VDAC, 0x64, 1800, 0);
1041 TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 0);
1042 TWL6030_FIXED_LDO(V1V8, 0x16, 1800, 0);
1043 TWL6030_FIXED_LDO(V2V1, 0x1c, 2100, 0);
1044 TWL6030_FIXED_RESOURCE(CLK32KG, 0x8C, 0);
1045 TWL6025_ADJUSTABLE_SMPS(SMPS3, 0x34);
1046 TWL6025_ADJUSTABLE_SMPS(SMPS4, 0x10);
1047 TWL6025_ADJUSTABLE_SMPS(VIO, 0x16);
1048
1049 static u8 twl_get_smps_offset(void)
1050 {
1051         u8 value;
1052
1053         twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
1054                         TWL6030_SMPS_OFFSET);
1055         return value;
1056 }
1057
1058 static u8 twl_get_smps_mult(void)
1059 {
1060         u8 value;
1061
1062         twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
1063                         TWL6030_SMPS_MULT);
1064         return value;
1065 }
1066
1067 #define TWL_OF_MATCH(comp, family, label) \
1068         { \
1069                 .compatible = comp, \
1070                 .data = &family##_INFO_##label, \
1071         }
1072
1073 #define TWL4030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL4030, label)
1074 #define TWL6030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6030, label)
1075 #define TWL6025_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6025, label)
1076 #define TWLFIXED_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLFIXED, label)
1077 #define TWLSMPS_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLSMPS, label)
1078
1079 static const struct of_device_id twl_of_match[] __devinitconst = {
1080         TWL4030_OF_MATCH("ti,twl4030-vaux1", VAUX1),
1081         TWL4030_OF_MATCH("ti,twl4030-vaux2", VAUX2_4030),
1082         TWL4030_OF_MATCH("ti,twl5030-vaux2", VAUX2),
1083         TWL4030_OF_MATCH("ti,twl4030-vaux3", VAUX3),
1084         TWL4030_OF_MATCH("ti,twl4030-vaux4", VAUX4),
1085         TWL4030_OF_MATCH("ti,twl4030-vmmc1", VMMC1),
1086         TWL4030_OF_MATCH("ti,twl4030-vmmc2", VMMC2),
1087         TWL4030_OF_MATCH("ti,twl4030-vpll1", VPLL1),
1088         TWL4030_OF_MATCH("ti,twl4030-vpll2", VPLL2),
1089         TWL4030_OF_MATCH("ti,twl4030-vsim", VSIM),
1090         TWL4030_OF_MATCH("ti,twl4030-vdac", VDAC),
1091         TWL4030_OF_MATCH("ti,twl4030-vintana2", VINTANA2),
1092         TWL4030_OF_MATCH("ti,twl4030-vio", VIO),
1093         TWL4030_OF_MATCH("ti,twl4030-vdd1", VDD1),
1094         TWL4030_OF_MATCH("ti,twl4030-vdd2", VDD2),
1095         TWL6030_OF_MATCH("ti,twl6030-vdd1", VDD1),
1096         TWL6030_OF_MATCH("ti,twl6030-vdd2", VDD2),
1097         TWL6030_OF_MATCH("ti,twl6030-vdd3", VDD3),
1098         TWL6030_OF_MATCH("ti,twl6030-vaux1", VAUX1_6030),
1099         TWL6030_OF_MATCH("ti,twl6030-vaux2", VAUX2_6030),
1100         TWL6030_OF_MATCH("ti,twl6030-vaux3", VAUX3_6030),
1101         TWL6030_OF_MATCH("ti,twl6030-vmmc", VMMC),
1102         TWL6030_OF_MATCH("ti,twl6030-vpp", VPP),
1103         TWL6030_OF_MATCH("ti,twl6030-vusim", VUSIM),
1104         TWL6025_OF_MATCH("ti,twl6025-ldo2", LDO2),
1105         TWL6025_OF_MATCH("ti,twl6025-ldo4", LDO4),
1106         TWL6025_OF_MATCH("ti,twl6025-ldo3", LDO3),
1107         TWL6025_OF_MATCH("ti,twl6025-ldo5", LDO5),
1108         TWL6025_OF_MATCH("ti,twl6025-ldo1", LDO1),
1109         TWL6025_OF_MATCH("ti,twl6025-ldo7", LDO7),
1110         TWL6025_OF_MATCH("ti,twl6025-ldo6", LDO6),
1111         TWL6025_OF_MATCH("ti,twl6025-ldoln", LDOLN),
1112         TWL6025_OF_MATCH("ti,twl6025-ldousb", LDOUSB),
1113         TWLFIXED_OF_MATCH("ti,twl4030-vintana2", VINTANA2),
1114         TWLFIXED_OF_MATCH("ti,twl4030-vintdig", VINTDIG),
1115         TWLFIXED_OF_MATCH("ti,twl4030-vusb1v5", VUSB1V5),
1116         TWLFIXED_OF_MATCH("ti,twl4030-vusb1v8", VUSB1V8),
1117         TWLFIXED_OF_MATCH("ti,twl4030-vusb3v1", VUSB3V1),
1118         TWLFIXED_OF_MATCH("ti,twl6030-vana", VANA),
1119         TWLFIXED_OF_MATCH("ti,twl6030-vcxio", VCXIO),
1120         TWLFIXED_OF_MATCH("ti,twl6030-vdac", VDAC),
1121         TWLFIXED_OF_MATCH("ti,twl6030-vusb", VUSB),
1122         TWLFIXED_OF_MATCH("ti,twl6030-v1v8", V1V8),
1123         TWLFIXED_OF_MATCH("ti,twl6030-v2v1", V2V1),
1124         TWLSMPS_OF_MATCH("ti,twl6025-smps3", SMPS3),
1125         TWLSMPS_OF_MATCH("ti,twl6025-smps4", SMPS4),
1126         TWLSMPS_OF_MATCH("ti,twl6025-vio", VIO),
1127         {},
1128 };
1129 MODULE_DEVICE_TABLE(of, twl_of_match);
1130
1131 static int __devinit twlreg_probe(struct platform_device *pdev)
1132 {
1133         int                             i, id;
1134         struct twlreg_info              *info;
1135         struct regulator_init_data      *initdata;
1136         struct regulation_constraints   *c;
1137         struct regulator_dev            *rdev;
1138         struct twl_regulator_driver_data        *drvdata;
1139         const struct of_device_id       *match;
1140         struct regulator_config         config = { };
1141
1142         match = of_match_device(twl_of_match, &pdev->dev);
1143         if (match) {
1144                 info = match->data;
1145                 id = info->desc.id;
1146                 initdata = of_get_regulator_init_data(&pdev->dev,
1147                                                       pdev->dev.of_node);
1148                 drvdata = NULL;
1149         } else {
1150                 id = pdev->id;
1151                 initdata = pdev->dev.platform_data;
1152                 for (i = 0, info = NULL; i < ARRAY_SIZE(twl_of_match); i++) {
1153                         info = twl_of_match[i].data;
1154                         if (info && info->desc.id == id)
1155                                 break;
1156                 }
1157                 if (i == ARRAY_SIZE(twl_of_match))
1158                         return -ENODEV;
1159
1160                 drvdata = initdata->driver_data;
1161                 if (!drvdata)
1162                         return -EINVAL;
1163         }
1164
1165         if (!info)
1166                 return -ENODEV;
1167
1168         if (!initdata)
1169                 return -EINVAL;
1170
1171         if (drvdata) {
1172                 /* copy the driver data into regulator data */
1173                 info->features = drvdata->features;
1174                 info->data = drvdata->data;
1175                 info->set_voltage = drvdata->set_voltage;
1176                 info->get_voltage = drvdata->get_voltage;
1177         }
1178
1179         /* Constrain board-specific capabilities according to what
1180          * this driver and the chip itself can actually do.
1181          */
1182         c = &initdata->constraints;
1183         c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY;
1184         c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE
1185                                 | REGULATOR_CHANGE_MODE
1186                                 | REGULATOR_CHANGE_STATUS;
1187         switch (id) {
1188         case TWL4030_REG_VIO:
1189         case TWL4030_REG_VDD1:
1190         case TWL4030_REG_VDD2:
1191         case TWL4030_REG_VPLL1:
1192         case TWL4030_REG_VINTANA1:
1193         case TWL4030_REG_VINTANA2:
1194         case TWL4030_REG_VINTDIG:
1195                 c->always_on = true;
1196                 break;
1197         default:
1198                 break;
1199         }
1200
1201         switch (id) {
1202         case TWL6025_REG_SMPS3:
1203                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS3)
1204                         info->flags |= SMPS_EXTENDED_EN;
1205                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS3)
1206                         info->flags |= SMPS_OFFSET_EN;
1207                 break;
1208         case TWL6025_REG_SMPS4:
1209                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS4)
1210                         info->flags |= SMPS_EXTENDED_EN;
1211                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS4)
1212                         info->flags |= SMPS_OFFSET_EN;
1213                 break;
1214         case TWL6025_REG_VIO:
1215                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_VIO)
1216                         info->flags |= SMPS_EXTENDED_EN;
1217                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_VIO)
1218                         info->flags |= SMPS_OFFSET_EN;
1219                 break;
1220         }
1221
1222         config.dev = &pdev->dev;
1223         config.init_data = initdata;
1224         config.driver_data = info;
1225         config.of_node = pdev->dev.of_node;
1226
1227         rdev = regulator_register(&info->desc, &config);
1228         if (IS_ERR(rdev)) {
1229                 dev_err(&pdev->dev, "can't register %s, %ld\n",
1230                                 info->desc.name, PTR_ERR(rdev));
1231                 return PTR_ERR(rdev);
1232         }
1233         platform_set_drvdata(pdev, rdev);
1234
1235         if (twl_class_is_4030())
1236                 twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_REMAP,
1237                                                 info->remap);
1238
1239         /* NOTE:  many regulators support short-circuit IRQs (presentable
1240          * as REGULATOR_OVER_CURRENT notifications?) configured via:
1241          *  - SC_CONFIG
1242          *  - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4)
1243          *  - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2)
1244          *  - IT_CONFIG
1245          */
1246
1247         return 0;
1248 }
1249
1250 static int __devexit twlreg_remove(struct platform_device *pdev)
1251 {
1252         regulator_unregister(platform_get_drvdata(pdev));
1253         return 0;
1254 }
1255
1256 MODULE_ALIAS("platform:twl_reg");
1257
1258 static struct platform_driver twlreg_driver = {
1259         .probe          = twlreg_probe,
1260         .remove         = __devexit_p(twlreg_remove),
1261         /* NOTE: short name, to work around driver model truncation of
1262          * "twl_regulator.12" (and friends) to "twl_regulator.1".
1263          */
1264         .driver  = {
1265                 .name  = "twl_reg",
1266                 .owner = THIS_MODULE,
1267                 .of_match_table = of_match_ptr(twl_of_match),
1268         },
1269 };
1270
1271 static int __init twlreg_init(void)
1272 {
1273         return platform_driver_register(&twlreg_driver);
1274 }
1275 subsys_initcall(twlreg_init);
1276
1277 static void __exit twlreg_exit(void)
1278 {
1279         platform_driver_unregister(&twlreg_driver);
1280 }
1281 module_exit(twlreg_exit)
1282
1283 MODULE_DESCRIPTION("TWL regulator driver");
1284 MODULE_LICENSE("GPL");