regulator: palmas: implement sleep mode configuration
[linux-2.6.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(struct regulator_dev *rdev, int min_uV, int max_uV,
477                        unsigned *selector)
478 {
479         struct twlreg_info      *info = rdev_get_drvdata(rdev);
480         int                     vsel;
481
482         for (vsel = 0; vsel < info->table_len; vsel++) {
483                 int mV = info->table[vsel];
484                 int uV;
485
486                 if (IS_UNSUP(mV))
487                         continue;
488                 uV = LDO_MV(mV) * 1000;
489
490                 /* REVISIT for VAUX2, first match may not be best/lowest */
491
492                 /* use the first in-range value */
493                 if (min_uV <= uV && uV <= max_uV) {
494                         *selector = vsel;
495                         return twlreg_write(info, TWL_MODULE_PM_RECEIVER,
496                                                         VREG_VOLTAGE, vsel);
497                 }
498         }
499
500         return -EDOM;
501 }
502
503 static int twl4030ldo_get_voltage(struct regulator_dev *rdev)
504 {
505         struct twlreg_info      *info = rdev_get_drvdata(rdev);
506         int             vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER,
507                                                                 VREG_VOLTAGE);
508
509         if (vsel < 0)
510                 return vsel;
511
512         vsel &= info->table_len - 1;
513         return LDO_MV(info->table[vsel]) * 1000;
514 }
515
516 static struct regulator_ops twl4030ldo_ops = {
517         .list_voltage   = twl4030ldo_list_voltage,
518
519         .set_voltage    = twl4030ldo_set_voltage,
520         .get_voltage    = twl4030ldo_get_voltage,
521
522         .enable         = twl4030reg_enable,
523         .disable        = twl4030reg_disable,
524         .is_enabled     = twl4030reg_is_enabled,
525
526         .set_mode       = twl4030reg_set_mode,
527
528         .get_status     = twl4030reg_get_status,
529 };
530
531 static int
532 twl4030smps_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV,
533                         unsigned *selector)
534 {
535         struct twlreg_info *info = rdev_get_drvdata(rdev);
536         int vsel = DIV_ROUND_UP(min_uV - 600000, 12500);
537
538         if (info->set_voltage) {
539                 return info->set_voltage(info->data, min_uV);
540         } else {
541                 twlreg_write(info, TWL_MODULE_PM_RECEIVER,
542                         VREG_VOLTAGE_SMPS_4030, vsel);
543         }
544
545         return 0;
546 }
547
548 static int twl4030smps_get_voltage(struct regulator_dev *rdev)
549 {
550         struct twlreg_info *info = rdev_get_drvdata(rdev);
551         int vsel;
552
553         if (info->get_voltage)
554                 return info->get_voltage(info->data);
555
556         vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER,
557                 VREG_VOLTAGE_SMPS_4030);
558
559         return vsel * 12500 + 600000;
560 }
561
562 static struct regulator_ops twl4030smps_ops = {
563         .set_voltage    = twl4030smps_set_voltage,
564         .get_voltage    = twl4030smps_get_voltage,
565 };
566
567 static int twl6030coresmps_set_voltage(struct regulator_dev *rdev, int min_uV,
568         int max_uV, unsigned *selector)
569 {
570         struct twlreg_info *info = rdev_get_drvdata(rdev);
571
572         if (info->set_voltage)
573                 return info->set_voltage(info->data, min_uV);
574
575         return -ENODEV;
576 }
577
578 static int twl6030coresmps_get_voltage(struct regulator_dev *rdev)
579 {
580         struct twlreg_info *info = rdev_get_drvdata(rdev);
581
582         if (info->get_voltage)
583                 return info->get_voltage(info->data);
584
585         return -ENODEV;
586 }
587
588 static struct regulator_ops twl6030coresmps_ops = {
589         .set_voltage    = twl6030coresmps_set_voltage,
590         .get_voltage    = twl6030coresmps_get_voltage,
591 };
592
593 static int twl6030ldo_list_voltage(struct regulator_dev *rdev, unsigned index)
594 {
595         struct twlreg_info      *info = rdev_get_drvdata(rdev);
596
597         return ((info->min_mV + (index * 100)) * 1000);
598 }
599
600 static int
601 twl6030ldo_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV,
602                        unsigned *selector)
603 {
604         struct twlreg_info      *info = rdev_get_drvdata(rdev);
605         int                     vsel;
606
607         if ((min_uV/1000 < info->min_mV) || (max_uV/1000 > info->max_mV))
608                 return -EDOM;
609
610         /*
611          * Use the below formula to calculate vsel
612          * mV = 1000mv + 100mv * (vsel - 1)
613          */
614         vsel = (min_uV/1000 - 1000)/100 + 1;
615         *selector = vsel;
616         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE, vsel);
617
618 }
619
620 static int twl6030ldo_get_voltage(struct regulator_dev *rdev)
621 {
622         struct twlreg_info      *info = rdev_get_drvdata(rdev);
623         int             vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER,
624                                                                 VREG_VOLTAGE);
625
626         if (vsel < 0)
627                 return vsel;
628
629         /*
630          * Use the below formula to calculate vsel
631          * mV = 1000mv + 100mv * (vsel - 1)
632          */
633         return (1000 + (100 * (vsel - 1))) * 1000;
634 }
635
636 static struct regulator_ops twl6030ldo_ops = {
637         .list_voltage   = twl6030ldo_list_voltage,
638
639         .set_voltage    = twl6030ldo_set_voltage,
640         .get_voltage    = twl6030ldo_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 /*----------------------------------------------------------------------*/
652
653 /*
654  * Fixed voltage LDOs don't have a VSEL field to update.
655  */
656 static int twlfixed_list_voltage(struct regulator_dev *rdev, unsigned index)
657 {
658         struct twlreg_info      *info = rdev_get_drvdata(rdev);
659
660         return info->min_mV * 1000;
661 }
662
663 static int twlfixed_get_voltage(struct regulator_dev *rdev)
664 {
665         struct twlreg_info      *info = rdev_get_drvdata(rdev);
666
667         return info->min_mV * 1000;
668 }
669
670 static struct regulator_ops twl4030fixed_ops = {
671         .list_voltage   = twlfixed_list_voltage,
672
673         .get_voltage    = twlfixed_get_voltage,
674
675         .enable         = twl4030reg_enable,
676         .disable        = twl4030reg_disable,
677         .is_enabled     = twl4030reg_is_enabled,
678
679         .set_mode       = twl4030reg_set_mode,
680
681         .get_status     = twl4030reg_get_status,
682 };
683
684 static struct regulator_ops twl6030fixed_ops = {
685         .list_voltage   = twlfixed_list_voltage,
686
687         .get_voltage    = twlfixed_get_voltage,
688
689         .enable         = twl6030reg_enable,
690         .disable        = twl6030reg_disable,
691         .is_enabled     = twl6030reg_is_enabled,
692
693         .set_mode       = twl6030reg_set_mode,
694
695         .get_status     = twl6030reg_get_status,
696 };
697
698 static struct regulator_ops twl6030_fixed_resource = {
699         .enable         = twl6030reg_enable,
700         .disable        = twl6030reg_disable,
701         .is_enabled     = twl6030reg_is_enabled,
702         .get_status     = twl6030reg_get_status,
703 };
704
705 /*
706  * SMPS status and control
707  */
708
709 static int twl6030smps_list_voltage(struct regulator_dev *rdev, unsigned index)
710 {
711         struct twlreg_info      *info = rdev_get_drvdata(rdev);
712
713         int voltage = 0;
714
715         switch (info->flags) {
716         case SMPS_OFFSET_EN:
717                 voltage = 100000;
718                 /* fall through */
719         case 0:
720                 switch (index) {
721                 case 0:
722                         voltage = 0;
723                         break;
724                 case 58:
725                         voltage = 1350 * 1000;
726                         break;
727                 case 59:
728                         voltage = 1500 * 1000;
729                         break;
730                 case 60:
731                         voltage = 1800 * 1000;
732                         break;
733                 case 61:
734                         voltage = 1900 * 1000;
735                         break;
736                 case 62:
737                         voltage = 2100 * 1000;
738                         break;
739                 default:
740                         voltage += (600000 + (12500 * (index - 1)));
741                 }
742                 break;
743         case SMPS_EXTENDED_EN:
744                 switch (index) {
745                 case 0:
746                         voltage = 0;
747                         break;
748                 case 58:
749                         voltage = 2084 * 1000;
750                         break;
751                 case 59:
752                         voltage = 2315 * 1000;
753                         break;
754                 case 60:
755                         voltage = 2778 * 1000;
756                         break;
757                 case 61:
758                         voltage = 2932 * 1000;
759                         break;
760                 case 62:
761                         voltage = 3241 * 1000;
762                         break;
763                 default:
764                         voltage = (1852000 + (38600 * (index - 1)));
765                 }
766                 break;
767         case SMPS_OFFSET_EN | SMPS_EXTENDED_EN:
768                 switch (index) {
769                 case 0:
770                         voltage = 0;
771                         break;
772                 case 58:
773                         voltage = 4167 * 1000;
774                         break;
775                 case 59:
776                         voltage = 2315 * 1000;
777                         break;
778                 case 60:
779                         voltage = 2778 * 1000;
780                         break;
781                 case 61:
782                         voltage = 2932 * 1000;
783                         break;
784                 case 62:
785                         voltage = 3241 * 1000;
786                         break;
787                 default:
788                         voltage = (2161000 + (38600 * (index - 1)));
789                 }
790                 break;
791         }
792
793         return voltage;
794 }
795
796 static int
797 twl6030smps_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV,
798                         unsigned int *selector)
799 {
800         struct twlreg_info      *info = rdev_get_drvdata(rdev);
801         int     vsel = 0;
802
803         switch (info->flags) {
804         case 0:
805                 if (min_uV == 0)
806                         vsel = 0;
807                 else if ((min_uV >= 600000) && (min_uV <= 1300000)) {
808                         int calc_uV;
809                         vsel = (min_uV - 600000) / 125;
810                         if (vsel % 100)
811                                 vsel += 100;
812                         vsel /= 100;
813                         vsel++;
814                         calc_uV = twl6030smps_list_voltage(rdev, vsel);
815                         if (calc_uV > max_uV)
816                                 return -EINVAL;
817                 }
818                 /* Values 1..57 for vsel are linear and can be calculated
819                  * values 58..62 are non linear.
820                  */
821                 else if ((min_uV > 1900000) && (max_uV >= 2100000))
822                         vsel = 62;
823                 else if ((min_uV > 1800000) && (max_uV >= 1900000))
824                         vsel = 61;
825                 else if ((min_uV > 1500000) && (max_uV >= 1800000))
826                         vsel = 60;
827                 else if ((min_uV > 1350000) && (max_uV >= 1500000))
828                         vsel = 59;
829                 else if ((min_uV > 1300000) && (max_uV >= 1350000))
830                         vsel = 58;
831                 else
832                         return -EINVAL;
833                 break;
834         case SMPS_OFFSET_EN:
835                 if (min_uV == 0)
836                         vsel = 0;
837                 else if ((min_uV >= 700000) && (min_uV <= 1420000)) {
838                         int calc_uV;
839                         vsel = (min_uV - 700000) / 125;
840                         if (vsel % 100)
841                                 vsel += 100;
842                         vsel /= 100;
843                         vsel++;
844                         calc_uV = twl6030smps_list_voltage(rdev, vsel);
845                         if (calc_uV > max_uV)
846                                 return -EINVAL;
847                 }
848                 /* Values 1..57 for vsel are linear and can be calculated
849                  * values 58..62 are non linear.
850                  */
851                 else if ((min_uV > 1900000) && (max_uV >= 2100000))
852                         vsel = 62;
853                 else if ((min_uV > 1800000) && (max_uV >= 1900000))
854                         vsel = 61;
855                 else if ((min_uV > 1350000) && (max_uV >= 1800000))
856                         vsel = 60;
857                 else if ((min_uV > 1350000) && (max_uV >= 1500000))
858                         vsel = 59;
859                 else if ((min_uV > 1300000) && (max_uV >= 1350000))
860                         vsel = 58;
861                 else
862                         return -EINVAL;
863                 break;
864         case SMPS_EXTENDED_EN:
865                 if (min_uV == 0)
866                         vsel = 0;
867                 else if ((min_uV >= 1852000) && (max_uV <= 4013600)) {
868                         vsel = (min_uV - 1852000) / 386;
869                         if (vsel % 100)
870                                 vsel += 100;
871                         vsel /= 100;
872                         vsel++;
873                 }
874                 break;
875         case SMPS_OFFSET_EN|SMPS_EXTENDED_EN:
876                 if (min_uV == 0)
877                         vsel = 0;
878                 else if ((min_uV >= 2161000) && (max_uV <= 4321000)) {
879                         vsel = (min_uV - 2161000) / 386;
880                         if (vsel % 100)
881                                 vsel += 100;
882                         vsel /= 100;
883                         vsel++;
884                 }
885                 break;
886         }
887
888         *selector = vsel;
889
890         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS,
891                                                         vsel);
892 }
893
894 static int twl6030smps_get_voltage_sel(struct regulator_dev *rdev)
895 {
896         struct twlreg_info      *info = rdev_get_drvdata(rdev);
897
898         return twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS);
899 }
900
901 static struct regulator_ops twlsmps_ops = {
902         .list_voltage           = twl6030smps_list_voltage,
903
904         .set_voltage            = twl6030smps_set_voltage,
905         .get_voltage_sel        = twl6030smps_get_voltage_sel,
906
907         .enable                 = twl6030reg_enable,
908         .disable                = twl6030reg_disable,
909         .is_enabled             = twl6030reg_is_enabled,
910
911         .set_mode               = twl6030reg_set_mode,
912
913         .get_status             = twl6030reg_get_status,
914 };
915
916 /*----------------------------------------------------------------------*/
917
918 #define TWL4030_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
919                         remap_conf) \
920                 TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
921                         remap_conf, TWL4030, twl4030fixed_ops)
922 #define TWL6030_FIXED_LDO(label, offset, mVolts, turnon_delay) \
923                 TWL_FIXED_LDO(label, offset, mVolts, 0x0, turnon_delay, \
924                         0x0, TWL6030, twl6030fixed_ops)
925
926 #define TWL4030_ADJUSTABLE_LDO(label, offset, num, turnon_delay, remap_conf) \
927 static struct twlreg_info TWL4030_INFO_##label = { \
928         .base = offset, \
929         .id = num, \
930         .table_len = ARRAY_SIZE(label##_VSEL_table), \
931         .table = label##_VSEL_table, \
932         .delay = turnon_delay, \
933         .remap = remap_conf, \
934         .desc = { \
935                 .name = #label, \
936                 .id = TWL4030_REG_##label, \
937                 .n_voltages = ARRAY_SIZE(label##_VSEL_table), \
938                 .ops = &twl4030ldo_ops, \
939                 .type = REGULATOR_VOLTAGE, \
940                 .owner = THIS_MODULE, \
941                 }, \
942         }
943
944 #define TWL4030_ADJUSTABLE_SMPS(label, offset, num, turnon_delay, remap_conf) \
945 static struct twlreg_info TWL4030_INFO_##label = { \
946         .base = offset, \
947         .id = num, \
948         .delay = turnon_delay, \
949         .remap = remap_conf, \
950         .desc = { \
951                 .name = #label, \
952                 .id = TWL4030_REG_##label, \
953                 .ops = &twl4030smps_ops, \
954                 .type = REGULATOR_VOLTAGE, \
955                 .owner = THIS_MODULE, \
956                 }, \
957         }
958
959 #define TWL6030_ADJUSTABLE_SMPS(label) \
960 static struct twlreg_info TWL6030_INFO_##label = { \
961         .desc = { \
962                 .name = #label, \
963                 .id = TWL6030_REG_##label, \
964                 .ops = &twl6030coresmps_ops, \
965                 .type = REGULATOR_VOLTAGE, \
966                 .owner = THIS_MODULE, \
967                 }, \
968         }
969
970 #define TWL6030_ADJUSTABLE_LDO(label, offset, min_mVolts, max_mVolts) \
971 static struct twlreg_info TWL6030_INFO_##label = { \
972         .base = offset, \
973         .min_mV = min_mVolts, \
974         .max_mV = max_mVolts, \
975         .desc = { \
976                 .name = #label, \
977                 .id = TWL6030_REG_##label, \
978                 .n_voltages = (max_mVolts - min_mVolts)/100 + 1, \
979                 .ops = &twl6030ldo_ops, \
980                 .type = REGULATOR_VOLTAGE, \
981                 .owner = THIS_MODULE, \
982                 }, \
983         }
984
985 #define TWL6025_ADJUSTABLE_LDO(label, offset, min_mVolts, max_mVolts) \
986 static struct twlreg_info TWL6025_INFO_##label = { \
987         .base = offset, \
988         .min_mV = min_mVolts, \
989         .max_mV = max_mVolts, \
990         .desc = { \
991                 .name = #label, \
992                 .id = TWL6025_REG_##label, \
993                 .n_voltages = ((max_mVolts - min_mVolts)/100) + 1, \
994                 .ops = &twl6030ldo_ops, \
995                 .type = REGULATOR_VOLTAGE, \
996                 .owner = THIS_MODULE, \
997                 }, \
998         }
999
1000 #define TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, remap_conf, \
1001                 family, operations) \
1002 static struct twlreg_info TWLFIXED_INFO_##label = { \
1003         .base = offset, \
1004         .id = num, \
1005         .min_mV = mVolts, \
1006         .delay = turnon_delay, \
1007         .remap = remap_conf, \
1008         .desc = { \
1009                 .name = #label, \
1010                 .id = family##_REG_##label, \
1011                 .n_voltages = 1, \
1012                 .ops = &operations, \
1013                 .type = REGULATOR_VOLTAGE, \
1014                 .owner = THIS_MODULE, \
1015                 }, \
1016         }
1017
1018 #define TWL6030_FIXED_RESOURCE(label, offset, turnon_delay) \
1019 static struct twlreg_info TWLRES_INFO_##label = { \
1020         .base = offset, \
1021         .delay = turnon_delay, \
1022         .desc = { \
1023                 .name = #label, \
1024                 .id = TWL6030_REG_##label, \
1025                 .ops = &twl6030_fixed_resource, \
1026                 .type = REGULATOR_VOLTAGE, \
1027                 .owner = THIS_MODULE, \
1028                 }, \
1029         }
1030
1031 #define TWL6025_ADJUSTABLE_SMPS(label, offset) \
1032 static struct twlreg_info TWLSMPS_INFO_##label = { \
1033         .base = offset, \
1034         .min_mV = 600, \
1035         .max_mV = 2100, \
1036         .desc = { \
1037                 .name = #label, \
1038                 .id = TWL6025_REG_##label, \
1039                 .n_voltages = 63, \
1040                 .ops = &twlsmps_ops, \
1041                 .type = REGULATOR_VOLTAGE, \
1042                 .owner = THIS_MODULE, \
1043                 }, \
1044         }
1045
1046 /*
1047  * We list regulators here if systems need some level of
1048  * software control over them after boot.
1049  */
1050 TWL4030_ADJUSTABLE_LDO(VAUX1, 0x17, 1, 100, 0x08);
1051 TWL4030_ADJUSTABLE_LDO(VAUX2_4030, 0x1b, 2, 100, 0x08);
1052 TWL4030_ADJUSTABLE_LDO(VAUX2, 0x1b, 2, 100, 0x08);
1053 TWL4030_ADJUSTABLE_LDO(VAUX3, 0x1f, 3, 100, 0x08);
1054 TWL4030_ADJUSTABLE_LDO(VAUX4, 0x23, 4, 100, 0x08);
1055 TWL4030_ADJUSTABLE_LDO(VMMC1, 0x27, 5, 100, 0x08);
1056 TWL4030_ADJUSTABLE_LDO(VMMC2, 0x2b, 6, 100, 0x08);
1057 TWL4030_ADJUSTABLE_LDO(VPLL1, 0x2f, 7, 100, 0x00);
1058 TWL4030_ADJUSTABLE_LDO(VPLL2, 0x33, 8, 100, 0x08);
1059 TWL4030_ADJUSTABLE_LDO(VSIM, 0x37, 9, 100, 0x00);
1060 TWL4030_ADJUSTABLE_LDO(VDAC, 0x3b, 10, 100, 0x08);
1061 TWL4030_ADJUSTABLE_LDO(VINTANA2, 0x43, 12, 100, 0x08);
1062 TWL4030_ADJUSTABLE_LDO(VIO, 0x4b, 14, 1000, 0x08);
1063 TWL4030_ADJUSTABLE_SMPS(VDD1, 0x55, 15, 1000, 0x08);
1064 TWL4030_ADJUSTABLE_SMPS(VDD2, 0x63, 16, 1000, 0x08);
1065 /* VUSBCP is managed *only* by the USB subchip */
1066 /* 6030 REG with base as PMC Slave Misc : 0x0030 */
1067 /* Turnon-delay and remap configuration values for 6030 are not
1068    verified since the specification is not public */
1069 TWL6030_ADJUSTABLE_SMPS(VDD1);
1070 TWL6030_ADJUSTABLE_SMPS(VDD2);
1071 TWL6030_ADJUSTABLE_SMPS(VDD3);
1072 TWL6030_ADJUSTABLE_LDO(VAUX1_6030, 0x54, 1000, 3300);
1073 TWL6030_ADJUSTABLE_LDO(VAUX2_6030, 0x58, 1000, 3300);
1074 TWL6030_ADJUSTABLE_LDO(VAUX3_6030, 0x5c, 1000, 3300);
1075 TWL6030_ADJUSTABLE_LDO(VMMC, 0x68, 1000, 3300);
1076 TWL6030_ADJUSTABLE_LDO(VPP, 0x6c, 1000, 3300);
1077 TWL6030_ADJUSTABLE_LDO(VUSIM, 0x74, 1000, 3300);
1078 /* 6025 are renamed compared to 6030 versions */
1079 TWL6025_ADJUSTABLE_LDO(LDO2, 0x54, 1000, 3300);
1080 TWL6025_ADJUSTABLE_LDO(LDO4, 0x58, 1000, 3300);
1081 TWL6025_ADJUSTABLE_LDO(LDO3, 0x5c, 1000, 3300);
1082 TWL6025_ADJUSTABLE_LDO(LDO5, 0x68, 1000, 3300);
1083 TWL6025_ADJUSTABLE_LDO(LDO1, 0x6c, 1000, 3300);
1084 TWL6025_ADJUSTABLE_LDO(LDO7, 0x74, 1000, 3300);
1085 TWL6025_ADJUSTABLE_LDO(LDO6, 0x60, 1000, 3300);
1086 TWL6025_ADJUSTABLE_LDO(LDOLN, 0x64, 1000, 3300);
1087 TWL6025_ADJUSTABLE_LDO(LDOUSB, 0x70, 1000, 3300);
1088 TWL4030_FIXED_LDO(VINTANA2, 0x3f, 1500, 11, 100, 0x08);
1089 TWL4030_FIXED_LDO(VINTDIG, 0x47, 1500, 13, 100, 0x08);
1090 TWL4030_FIXED_LDO(VUSB1V5, 0x71, 1500, 17, 100, 0x08);
1091 TWL4030_FIXED_LDO(VUSB1V8, 0x74, 1800, 18, 100, 0x08);
1092 TWL4030_FIXED_LDO(VUSB3V1, 0x77, 3100, 19, 150, 0x08);
1093 TWL6030_FIXED_LDO(VANA, 0x50, 2100, 0);
1094 TWL6030_FIXED_LDO(VCXIO, 0x60, 1800, 0);
1095 TWL6030_FIXED_LDO(VDAC, 0x64, 1800, 0);
1096 TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 0);
1097 TWL6030_FIXED_LDO(V1V8, 0x16, 1800, 0);
1098 TWL6030_FIXED_LDO(V2V1, 0x1c, 2100, 0);
1099 TWL6030_FIXED_RESOURCE(CLK32KG, 0x8C, 0);
1100 TWL6025_ADJUSTABLE_SMPS(SMPS3, 0x34);
1101 TWL6025_ADJUSTABLE_SMPS(SMPS4, 0x10);
1102 TWL6025_ADJUSTABLE_SMPS(VIO, 0x16);
1103
1104 static u8 twl_get_smps_offset(void)
1105 {
1106         u8 value;
1107
1108         twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
1109                         TWL6030_SMPS_OFFSET);
1110         return value;
1111 }
1112
1113 static u8 twl_get_smps_mult(void)
1114 {
1115         u8 value;
1116
1117         twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
1118                         TWL6030_SMPS_MULT);
1119         return value;
1120 }
1121
1122 #define TWL_OF_MATCH(comp, family, label) \
1123         { \
1124                 .compatible = comp, \
1125                 .data = &family##_INFO_##label, \
1126         }
1127
1128 #define TWL4030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL4030, label)
1129 #define TWL6030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6030, label)
1130 #define TWL6025_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6025, label)
1131 #define TWLFIXED_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLFIXED, label)
1132 #define TWLRES_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLRES, label)
1133 #define TWLSMPS_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLSMPS, label)
1134
1135 static const struct of_device_id twl_of_match[] __devinitconst = {
1136         TWL4030_OF_MATCH("ti,twl4030-vaux1", VAUX1),
1137         TWL4030_OF_MATCH("ti,twl4030-vaux2", VAUX2_4030),
1138         TWL4030_OF_MATCH("ti,twl5030-vaux2", VAUX2),
1139         TWL4030_OF_MATCH("ti,twl4030-vaux3", VAUX3),
1140         TWL4030_OF_MATCH("ti,twl4030-vaux4", VAUX4),
1141         TWL4030_OF_MATCH("ti,twl4030-vmmc1", VMMC1),
1142         TWL4030_OF_MATCH("ti,twl4030-vmmc2", VMMC2),
1143         TWL4030_OF_MATCH("ti,twl4030-vpll1", VPLL1),
1144         TWL4030_OF_MATCH("ti,twl4030-vpll2", VPLL2),
1145         TWL4030_OF_MATCH("ti,twl4030-vsim", VSIM),
1146         TWL4030_OF_MATCH("ti,twl4030-vdac", VDAC),
1147         TWL4030_OF_MATCH("ti,twl4030-vintana2", VINTANA2),
1148         TWL4030_OF_MATCH("ti,twl4030-vio", VIO),
1149         TWL4030_OF_MATCH("ti,twl4030-vdd1", VDD1),
1150         TWL4030_OF_MATCH("ti,twl4030-vdd2", VDD2),
1151         TWL6030_OF_MATCH("ti,twl6030-vdd1", VDD1),
1152         TWL6030_OF_MATCH("ti,twl6030-vdd2", VDD2),
1153         TWL6030_OF_MATCH("ti,twl6030-vdd3", VDD3),
1154         TWL6030_OF_MATCH("ti,twl6030-vaux1", VAUX1_6030),
1155         TWL6030_OF_MATCH("ti,twl6030-vaux2", VAUX2_6030),
1156         TWL6030_OF_MATCH("ti,twl6030-vaux3", VAUX3_6030),
1157         TWL6030_OF_MATCH("ti,twl6030-vmmc", VMMC),
1158         TWL6030_OF_MATCH("ti,twl6030-vpp", VPP),
1159         TWL6030_OF_MATCH("ti,twl6030-vusim", VUSIM),
1160         TWL6025_OF_MATCH("ti,twl6025-ldo2", LDO2),
1161         TWL6025_OF_MATCH("ti,twl6025-ldo4", LDO4),
1162         TWL6025_OF_MATCH("ti,twl6025-ldo3", LDO3),
1163         TWL6025_OF_MATCH("ti,twl6025-ldo5", LDO5),
1164         TWL6025_OF_MATCH("ti,twl6025-ldo1", LDO1),
1165         TWL6025_OF_MATCH("ti,twl6025-ldo7", LDO7),
1166         TWL6025_OF_MATCH("ti,twl6025-ldo6", LDO6),
1167         TWL6025_OF_MATCH("ti,twl6025-ldoln", LDOLN),
1168         TWL6025_OF_MATCH("ti,twl6025-ldousb", LDOUSB),
1169         TWLFIXED_OF_MATCH("ti,twl4030-vintana2", VINTANA2),
1170         TWLFIXED_OF_MATCH("ti,twl4030-vintdig", VINTDIG),
1171         TWLFIXED_OF_MATCH("ti,twl4030-vusb1v5", VUSB1V5),
1172         TWLFIXED_OF_MATCH("ti,twl4030-vusb1v8", VUSB1V8),
1173         TWLFIXED_OF_MATCH("ti,twl4030-vusb3v1", VUSB3V1),
1174         TWLFIXED_OF_MATCH("ti,twl6030-vana", VANA),
1175         TWLFIXED_OF_MATCH("ti,twl6030-vcxio", VCXIO),
1176         TWLFIXED_OF_MATCH("ti,twl6030-vdac", VDAC),
1177         TWLFIXED_OF_MATCH("ti,twl6030-vusb", VUSB),
1178         TWLFIXED_OF_MATCH("ti,twl6030-v1v8", V1V8),
1179         TWLFIXED_OF_MATCH("ti,twl6030-v2v1", V2V1),
1180         TWLRES_OF_MATCH("ti,twl6030-clk32kg", CLK32KG),
1181         TWLSMPS_OF_MATCH("ti,twl6025-smps3", SMPS3),
1182         TWLSMPS_OF_MATCH("ti,twl6025-smps4", SMPS4),
1183         TWLSMPS_OF_MATCH("ti,twl6025-vio", VIO),
1184         {},
1185 };
1186 MODULE_DEVICE_TABLE(of, twl_of_match);
1187
1188 static int __devinit twlreg_probe(struct platform_device *pdev)
1189 {
1190         int                             i, id;
1191         struct twlreg_info              *info;
1192         struct regulator_init_data      *initdata;
1193         struct regulation_constraints   *c;
1194         struct regulator_dev            *rdev;
1195         struct twl_regulator_driver_data        *drvdata;
1196         const struct of_device_id       *match;
1197
1198         match = of_match_device(twl_of_match, &pdev->dev);
1199         if (match) {
1200                 info = match->data;
1201                 id = info->desc.id;
1202                 initdata = of_get_regulator_init_data(&pdev->dev,
1203                                                       pdev->dev.of_node);
1204                 drvdata = NULL;
1205         } else {
1206                 id = pdev->id;
1207                 initdata = pdev->dev.platform_data;
1208                 for (i = 0, info = NULL; i < ARRAY_SIZE(twl_of_match); i++) {
1209                         info = twl_of_match[i].data;
1210                         if (!info || info->desc.id != id)
1211                                 continue;
1212                         break;
1213                 }
1214                 drvdata = initdata->driver_data;
1215                 if (!drvdata)
1216                         return -EINVAL;
1217         }
1218
1219         if (!info)
1220                 return -ENODEV;
1221
1222         if (!initdata)
1223                 return -EINVAL;
1224
1225         if (drvdata) {
1226                 /* copy the driver data into regulator data */
1227                 info->features = drvdata->features;
1228                 info->data = drvdata->data;
1229                 info->set_voltage = drvdata->set_voltage;
1230                 info->get_voltage = drvdata->get_voltage;
1231         }
1232
1233         /* Constrain board-specific capabilities according to what
1234          * this driver and the chip itself can actually do.
1235          */
1236         c = &initdata->constraints;
1237         c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY;
1238         c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE
1239                                 | REGULATOR_CHANGE_MODE
1240                                 | REGULATOR_CHANGE_STATUS;
1241         switch (id) {
1242         case TWL4030_REG_VIO:
1243         case TWL4030_REG_VDD1:
1244         case TWL4030_REG_VDD2:
1245         case TWL4030_REG_VPLL1:
1246         case TWL4030_REG_VINTANA1:
1247         case TWL4030_REG_VINTANA2:
1248         case TWL4030_REG_VINTDIG:
1249                 c->always_on = true;
1250                 break;
1251         default:
1252                 break;
1253         }
1254
1255         switch (id) {
1256         case TWL6025_REG_SMPS3:
1257                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS3)
1258                         info->flags |= SMPS_EXTENDED_EN;
1259                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS3)
1260                         info->flags |= SMPS_OFFSET_EN;
1261                 break;
1262         case TWL6025_REG_SMPS4:
1263                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS4)
1264                         info->flags |= SMPS_EXTENDED_EN;
1265                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS4)
1266                         info->flags |= SMPS_OFFSET_EN;
1267                 break;
1268         case TWL6025_REG_VIO:
1269                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_VIO)
1270                         info->flags |= SMPS_EXTENDED_EN;
1271                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_VIO)
1272                         info->flags |= SMPS_OFFSET_EN;
1273                 break;
1274         }
1275
1276         rdev = regulator_register(&info->desc, &pdev->dev, initdata, info,
1277                                                         pdev->dev.of_node);
1278         if (IS_ERR(rdev)) {
1279                 dev_err(&pdev->dev, "can't register %s, %ld\n",
1280                                 info->desc.name, PTR_ERR(rdev));
1281                 return PTR_ERR(rdev);
1282         }
1283         platform_set_drvdata(pdev, rdev);
1284
1285         if (twl_class_is_4030())
1286                 twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_REMAP,
1287                                                 info->remap);
1288
1289         /* NOTE:  many regulators support short-circuit IRQs (presentable
1290          * as REGULATOR_OVER_CURRENT notifications?) configured via:
1291          *  - SC_CONFIG
1292          *  - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4)
1293          *  - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2)
1294          *  - IT_CONFIG
1295          */
1296
1297         return 0;
1298 }
1299
1300 static int __devexit twlreg_remove(struct platform_device *pdev)
1301 {
1302         regulator_unregister(platform_get_drvdata(pdev));
1303         return 0;
1304 }
1305
1306 MODULE_ALIAS("platform:twl_reg");
1307
1308 static struct platform_driver twlreg_driver = {
1309         .probe          = twlreg_probe,
1310         .remove         = __devexit_p(twlreg_remove),
1311         /* NOTE: short name, to work around driver model truncation of
1312          * "twl_regulator.12" (and friends) to "twl_regulator.1".
1313          */
1314         .driver  = {
1315                 .name  = "twl_reg",
1316                 .owner = THIS_MODULE,
1317                 .of_match_table = of_match_ptr(twl_of_match),
1318         },
1319 };
1320
1321 static int __init twlreg_init(void)
1322 {
1323         return platform_driver_register(&twlreg_driver);
1324 }
1325 subsys_initcall(twlreg_init);
1326
1327 static void __exit twlreg_exit(void)
1328 {
1329         platform_driver_unregister(&twlreg_driver);
1330 }
1331 module_exit(twlreg_exit)
1332
1333 MODULE_DESCRIPTION("TWL regulator driver");
1334 MODULE_LICENSE("GPL");