regulator: twl6030: do not write to _GRP for regulator enable
[linux-3.10.git] / drivers / regulator / twl-regulator.c
1 /*
2  * twl-regulator.c -- support regulators in twl4030/twl6030 family chips
3  *
4  * Copyright (C) 2008 David Brownell
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  */
11
12 #include <linux/module.h>
13 #include <linux/init.h>
14 #include <linux/err.h>
15 #include <linux/delay.h>
16 #include <linux/platform_device.h>
17 #include <linux/regulator/driver.h>
18 #include <linux/regulator/machine.h>
19 #include <linux/i2c/twl.h>
20
21
22 /*
23  * The TWL4030/TW5030/TPS659x0/TWL6030 family chips include power management, a
24  * USB OTG transceiver, an RTC, ADC, PWM, and lots more.  Some versions
25  * include an audio codec, battery charger, and more voltage regulators.
26  * These chips are often used in OMAP-based systems.
27  *
28  * This driver implements software-based resource control for various
29  * voltage regulators.  This is usually augmented with state machine
30  * based control.
31  */
32
33 struct twlreg_info {
34         /* start of regulator's PM_RECEIVER control register bank */
35         u8                      base;
36
37         /* twl resource ID, for resource control state machine */
38         u8                      id;
39
40         /* voltage in mV = table[VSEL]; table_len must be a power-of-two */
41         u8                      table_len;
42         const u16               *table;
43
44         /* regulator specific turn-on delay */
45         u16                     delay;
46
47         /* State REMAP default configuration */
48         u8                      remap;
49
50         /* chip constraints on regulator behavior */
51         u16                     min_mV;
52         u16                     max_mV;
53
54         /* used by regulator core */
55         struct regulator_desc   desc;
56 };
57
58
59 /* LDO control registers ... offset is from the base of its register bank.
60  * The first three registers of all power resource banks help hardware to
61  * manage the various resource groups.
62  */
63 /* Common offset in TWL4030/6030 */
64 #define VREG_GRP                0
65 /* TWL4030 register offsets */
66 #define VREG_TYPE               1
67 #define VREG_REMAP              2
68 #define VREG_DEDICATED          3       /* LDO control */
69 /* TWL6030 register offsets */
70 #define VREG_TRANS              1
71 #define VREG_STATE              2
72 #define VREG_VOLTAGE            3
73 /* TWL6030 Misc register offsets */
74 #define VREG_BC_ALL             1
75 #define VREG_BC_REF             2
76 #define VREG_BC_PROC            3
77 #define VREG_BC_CLK_RST         4
78
79 /* TWL6030 LDO register values for CFG_STATE */
80 #define TWL6030_CFG_STATE_OFF   0x00
81 #define TWL6030_CFG_STATE_ON    0x01
82 #define TWL6030_CFG_STATE_OFF2  0x02
83 #define TWL6030_CFG_STATE_SLEEP 0x03
84 #define TWL6030_CFG_STATE_GRP_SHIFT     5
85 #define TWL6030_CFG_STATE_APP_SHIFT     2
86 #define TWL6030_CFG_STATE_APP_MASK      (0x03 << TWL6030_CFG_STATE_APP_SHIFT)
87 #define TWL6030_CFG_STATE_APP(v)        (((v) & TWL6030_CFG_STATE_APP_MASK) >>\
88                                                 TWL6030_CFG_STATE_APP_SHIFT)
89
90 static inline int
91 twlreg_read(struct twlreg_info *info, unsigned slave_subgp, unsigned offset)
92 {
93         u8 value;
94         int status;
95
96         status = twl_i2c_read_u8(slave_subgp,
97                         &value, info->base + offset);
98         return (status < 0) ? status : value;
99 }
100
101 static inline int
102 twlreg_write(struct twlreg_info *info, unsigned slave_subgp, unsigned offset,
103                                                  u8 value)
104 {
105         return twl_i2c_write_u8(slave_subgp,
106                         value, info->base + offset);
107 }
108
109 /*----------------------------------------------------------------------*/
110
111 /* generic power resource operations, which work on all regulators */
112
113 static int twlreg_grp(struct regulator_dev *rdev)
114 {
115         return twlreg_read(rdev_get_drvdata(rdev), TWL_MODULE_PM_RECEIVER,
116                                                                  VREG_GRP);
117 }
118
119 /*
120  * Enable/disable regulators by joining/leaving the P1 (processor) group.
121  * We assume nobody else is updating the DEV_GRP registers.
122  */
123 /* definition for 4030 family */
124 #define P3_GRP_4030     BIT(7)          /* "peripherals" */
125 #define P2_GRP_4030     BIT(6)          /* secondary processor, modem, etc */
126 #define P1_GRP_4030     BIT(5)          /* CPU/Linux */
127 /* definition for 6030 family */
128 #define P3_GRP_6030     BIT(2)          /* secondary processor, modem, etc */
129 #define P2_GRP_6030     BIT(1)          /* "peripherals" */
130 #define P1_GRP_6030     BIT(0)          /* CPU/Linux */
131
132 static int twl4030reg_is_enabled(struct regulator_dev *rdev)
133 {
134         int     state = twlreg_grp(rdev);
135
136         if (state < 0)
137                 return state;
138
139         return state & P1_GRP_4030;
140 }
141
142 static int twl6030reg_is_enabled(struct regulator_dev *rdev)
143 {
144         struct twlreg_info      *info = rdev_get_drvdata(rdev);
145         int                     grp, val;
146
147         grp = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_GRP);
148         if (grp < 0)
149                 return grp;
150
151         grp &= P1_GRP_6030;
152
153         val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
154         val = TWL6030_CFG_STATE_APP(val);
155
156         return grp && (val == TWL6030_CFG_STATE_ON);
157 }
158
159 static int twl4030reg_enable(struct regulator_dev *rdev)
160 {
161         struct twlreg_info      *info = rdev_get_drvdata(rdev);
162         int                     grp;
163         int                     ret;
164
165         grp = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_GRP);
166         if (grp < 0)
167                 return grp;
168
169         grp |= P1_GRP_4030;
170
171         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp);
172
173         udelay(info->delay);
174
175         return ret;
176 }
177
178 static int twl6030reg_enable(struct regulator_dev *rdev)
179 {
180         struct twlreg_info      *info = rdev_get_drvdata(rdev);
181         int                     grp;
182         int                     ret;
183
184         grp = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_GRP);
185         if (grp < 0)
186                 return grp;
187
188         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
189                         grp << TWL6030_CFG_STATE_GRP_SHIFT |
190                         TWL6030_CFG_STATE_ON);
191
192         udelay(info->delay);
193
194         return ret;
195 }
196
197 static int twlreg_disable(struct regulator_dev *rdev)
198 {
199         struct twlreg_info      *info = rdev_get_drvdata(rdev);
200         int                     grp;
201         int                     ret;
202
203         grp = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_GRP);
204         if (grp < 0)
205                 return grp;
206
207         /* For 6030, set the off state for all grps enabled */
208         if (twl_class_is_6030()) {
209                 ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
210                         (grp & (P1_GRP_6030 | P2_GRP_6030 | P3_GRP_6030)) <<
211                                 TWL6030_CFG_STATE_GRP_SHIFT |
212                         TWL6030_CFG_STATE_OFF);
213                 if (ret)
214                         return ret;
215         }
216
217         if (twl_class_is_4030())
218                 grp &= ~(P1_GRP_4030 | P2_GRP_4030 | P3_GRP_4030);
219         else
220                 grp &= ~(P1_GRP_6030 | P2_GRP_6030 | P3_GRP_6030);
221
222         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp);
223
224         /* Next, associate cleared grp in state register */
225         if (!ret && twl_class_is_6030())
226                 ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
227                                 grp << TWL6030_CFG_STATE_GRP_SHIFT |
228                                 TWL6030_CFG_STATE_OFF);
229
230         return ret;
231 }
232
233 static int twl4030reg_get_status(struct regulator_dev *rdev)
234 {
235         int     state = twlreg_grp(rdev);
236
237         if (state < 0)
238                 return state;
239         state &= 0x0f;
240
241         /* assume state != WARM_RESET; we'd not be running...  */
242         if (!state)
243                 return REGULATOR_STATUS_OFF;
244         return (state & BIT(3))
245                 ? REGULATOR_STATUS_NORMAL
246                 : REGULATOR_STATUS_STANDBY;
247 }
248
249 static int twl6030reg_get_status(struct regulator_dev *rdev)
250 {
251         struct twlreg_info      *info = rdev_get_drvdata(rdev);
252         int                     val;
253
254         val = twlreg_grp(rdev);
255         if (val < 0)
256                 return val;
257
258         val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
259
260         switch (TWL6030_CFG_STATE_APP(val)) {
261         case TWL6030_CFG_STATE_ON:
262                 return REGULATOR_STATUS_NORMAL;
263
264         case TWL6030_CFG_STATE_SLEEP:
265                 return REGULATOR_STATUS_STANDBY;
266
267         case TWL6030_CFG_STATE_OFF:
268         case TWL6030_CFG_STATE_OFF2:
269         default:
270                 break;
271         }
272
273         return REGULATOR_STATUS_OFF;
274 }
275
276 static int twl4030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
277 {
278         struct twlreg_info      *info = rdev_get_drvdata(rdev);
279         unsigned                message;
280         int                     status;
281
282         /* We can only set the mode through state machine commands... */
283         switch (mode) {
284         case REGULATOR_MODE_NORMAL:
285                 message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_ACTIVE);
286                 break;
287         case REGULATOR_MODE_STANDBY:
288                 message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_SLEEP);
289                 break;
290         default:
291                 return -EINVAL;
292         }
293
294         /* Ensure the resource is associated with some group */
295         status = twlreg_grp(rdev);
296         if (status < 0)
297                 return status;
298         if (!(status & (P3_GRP_4030 | P2_GRP_4030 | P1_GRP_4030)))
299                 return -EACCES;
300
301         status = twl_i2c_write_u8(TWL_MODULE_PM_MASTER,
302                         message >> 8, TWL4030_PM_MASTER_PB_WORD_MSB);
303         if (status < 0)
304                 return status;
305
306         return twl_i2c_write_u8(TWL_MODULE_PM_MASTER,
307                         message & 0xff, TWL4030_PM_MASTER_PB_WORD_LSB);
308 }
309
310 static int twl6030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
311 {
312         struct twlreg_info      *info = rdev_get_drvdata(rdev);
313         int grp;
314         int val;
315
316         grp = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_GRP);
317
318         if (grp < 0)
319                 return grp;
320
321         /* Compose the state register settings */
322         val = grp << TWL6030_CFG_STATE_GRP_SHIFT;
323         /* We can only set the mode through state machine commands... */
324         switch (mode) {
325         case REGULATOR_MODE_NORMAL:
326                 val |= TWL6030_CFG_STATE_ON;
327                 break;
328         case REGULATOR_MODE_STANDBY:
329                 val |= TWL6030_CFG_STATE_SLEEP;
330                 break;
331
332         default:
333                 return -EINVAL;
334         }
335
336         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, val);
337 }
338
339 /*----------------------------------------------------------------------*/
340
341 /*
342  * Support for adjustable-voltage LDOs uses a four bit (or less) voltage
343  * select field in its control register.   We use tables indexed by VSEL
344  * to record voltages in milliVolts.  (Accuracy is about three percent.)
345  *
346  * Note that VSEL values for VAUX2 changed in twl5030 and newer silicon;
347  * currently handled by listing two slightly different VAUX2 regulators,
348  * only one of which will be configured.
349  *
350  * VSEL values documented as "TI cannot support these values" are flagged
351  * in these tables as UNSUP() values; we normally won't assign them.
352  *
353  * VAUX3 at 3V is incorrectly listed in some TI manuals as unsupported.
354  * TI are revising the twl5030/tps659x0 specs to support that 3.0V setting.
355  */
356 #ifdef CONFIG_TWL4030_ALLOW_UNSUPPORTED
357 #define UNSUP_MASK      0x0000
358 #else
359 #define UNSUP_MASK      0x8000
360 #endif
361
362 #define UNSUP(x)        (UNSUP_MASK | (x))
363 #define IS_UNSUP(x)     (UNSUP_MASK & (x))
364 #define LDO_MV(x)       (~UNSUP_MASK & (x))
365
366
367 static const u16 VAUX1_VSEL_table[] = {
368         UNSUP(1500), UNSUP(1800), 2500, 2800,
369         3000, 3000, 3000, 3000,
370 };
371 static const u16 VAUX2_4030_VSEL_table[] = {
372         UNSUP(1000), UNSUP(1000), UNSUP(1200), 1300,
373         1500, 1800, UNSUP(1850), 2500,
374         UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000),
375         UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
376 };
377 static const u16 VAUX2_VSEL_table[] = {
378         1700, 1700, 1900, 1300,
379         1500, 1800, 2000, 2500,
380         2100, 2800, 2200, 2300,
381         2400, 2400, 2400, 2400,
382 };
383 static const u16 VAUX3_VSEL_table[] = {
384         1500, 1800, 2500, 2800,
385         3000, 3000, 3000, 3000,
386 };
387 static const u16 VAUX4_VSEL_table[] = {
388         700, 1000, 1200, UNSUP(1300),
389         1500, 1800, UNSUP(1850), 2500,
390         UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000),
391         UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
392 };
393 static const u16 VMMC1_VSEL_table[] = {
394         1850, 2850, 3000, 3150,
395 };
396 static const u16 VMMC2_VSEL_table[] = {
397         UNSUP(1000), UNSUP(1000), UNSUP(1200), UNSUP(1300),
398         UNSUP(1500), UNSUP(1800), 1850, UNSUP(2500),
399         2600, 2800, 2850, 3000,
400         3150, 3150, 3150, 3150,
401 };
402 static const u16 VPLL1_VSEL_table[] = {
403         1000, 1200, 1300, 1800,
404         UNSUP(2800), UNSUP(3000), UNSUP(3000), UNSUP(3000),
405 };
406 static const u16 VPLL2_VSEL_table[] = {
407         700, 1000, 1200, 1300,
408         UNSUP(1500), 1800, UNSUP(1850), UNSUP(2500),
409         UNSUP(2600), UNSUP(2800), UNSUP(2850), UNSUP(3000),
410         UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
411 };
412 static const u16 VSIM_VSEL_table[] = {
413         UNSUP(1000), UNSUP(1200), UNSUP(1300), 1800,
414         2800, 3000, 3000, 3000,
415 };
416 static const u16 VDAC_VSEL_table[] = {
417         1200, 1300, 1800, 1800,
418 };
419 static const u16 VDD1_VSEL_table[] = {
420         800, 1450,
421 };
422 static const u16 VDD2_VSEL_table[] = {
423         800, 1450, 1500,
424 };
425 static const u16 VIO_VSEL_table[] = {
426         1800, 1850,
427 };
428 static const u16 VINTANA2_VSEL_table[] = {
429         2500, 2750,
430 };
431
432 static int twl4030ldo_list_voltage(struct regulator_dev *rdev, unsigned index)
433 {
434         struct twlreg_info      *info = rdev_get_drvdata(rdev);
435         int                     mV = info->table[index];
436
437         return IS_UNSUP(mV) ? 0 : (LDO_MV(mV) * 1000);
438 }
439
440 static int
441 twl4030ldo_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV,
442                        unsigned *selector)
443 {
444         struct twlreg_info      *info = rdev_get_drvdata(rdev);
445         int                     vsel;
446
447         for (vsel = 0; vsel < info->table_len; vsel++) {
448                 int mV = info->table[vsel];
449                 int uV;
450
451                 if (IS_UNSUP(mV))
452                         continue;
453                 uV = LDO_MV(mV) * 1000;
454
455                 /* REVISIT for VAUX2, first match may not be best/lowest */
456
457                 /* use the first in-range value */
458                 if (min_uV <= uV && uV <= max_uV) {
459                         *selector = vsel;
460                         return twlreg_write(info, TWL_MODULE_PM_RECEIVER,
461                                                         VREG_VOLTAGE, vsel);
462                 }
463         }
464
465         return -EDOM;
466 }
467
468 static int twl4030ldo_get_voltage(struct regulator_dev *rdev)
469 {
470         struct twlreg_info      *info = rdev_get_drvdata(rdev);
471         int             vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER,
472                                                                 VREG_VOLTAGE);
473
474         if (vsel < 0)
475                 return vsel;
476
477         vsel &= info->table_len - 1;
478         return LDO_MV(info->table[vsel]) * 1000;
479 }
480
481 static struct regulator_ops twl4030ldo_ops = {
482         .list_voltage   = twl4030ldo_list_voltage,
483
484         .set_voltage    = twl4030ldo_set_voltage,
485         .get_voltage    = twl4030ldo_get_voltage,
486
487         .enable         = twl4030reg_enable,
488         .disable        = twlreg_disable,
489         .is_enabled     = twl4030reg_is_enabled,
490
491         .set_mode       = twl4030reg_set_mode,
492
493         .get_status     = twl4030reg_get_status,
494 };
495
496 static int twl6030ldo_list_voltage(struct regulator_dev *rdev, unsigned index)
497 {
498         struct twlreg_info      *info = rdev_get_drvdata(rdev);
499
500         return ((info->min_mV + (index * 100)) * 1000);
501 }
502
503 static int
504 twl6030ldo_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV,
505                        unsigned *selector)
506 {
507         struct twlreg_info      *info = rdev_get_drvdata(rdev);
508         int                     vsel;
509
510         if ((min_uV/1000 < info->min_mV) || (max_uV/1000 > info->max_mV))
511                 return -EDOM;
512
513         /*
514          * Use the below formula to calculate vsel
515          * mV = 1000mv + 100mv * (vsel - 1)
516          */
517         vsel = (min_uV/1000 - 1000)/100 + 1;
518         *selector = vsel;
519         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE, vsel);
520
521 }
522
523 static int twl6030ldo_get_voltage(struct regulator_dev *rdev)
524 {
525         struct twlreg_info      *info = rdev_get_drvdata(rdev);
526         int             vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER,
527                                                                 VREG_VOLTAGE);
528
529         if (vsel < 0)
530                 return vsel;
531
532         /*
533          * Use the below formula to calculate vsel
534          * mV = 1000mv + 100mv * (vsel - 1)
535          */
536         return (1000 + (100 * (vsel - 1))) * 1000;
537 }
538
539 static struct regulator_ops twl6030ldo_ops = {
540         .list_voltage   = twl6030ldo_list_voltage,
541
542         .set_voltage    = twl6030ldo_set_voltage,
543         .get_voltage    = twl6030ldo_get_voltage,
544
545         .enable         = twl6030reg_enable,
546         .disable        = twlreg_disable,
547         .is_enabled     = twl6030reg_is_enabled,
548
549         .set_mode       = twl6030reg_set_mode,
550
551         .get_status     = twl6030reg_get_status,
552 };
553
554 /*----------------------------------------------------------------------*/
555
556 /*
557  * Fixed voltage LDOs don't have a VSEL field to update.
558  */
559 static int twlfixed_list_voltage(struct regulator_dev *rdev, unsigned index)
560 {
561         struct twlreg_info      *info = rdev_get_drvdata(rdev);
562
563         return info->min_mV * 1000;
564 }
565
566 static int twlfixed_get_voltage(struct regulator_dev *rdev)
567 {
568         struct twlreg_info      *info = rdev_get_drvdata(rdev);
569
570         return info->min_mV * 1000;
571 }
572
573 static struct regulator_ops twl4030fixed_ops = {
574         .list_voltage   = twlfixed_list_voltage,
575
576         .get_voltage    = twlfixed_get_voltage,
577
578         .enable         = twl4030reg_enable,
579         .disable        = twlreg_disable,
580         .is_enabled     = twl4030reg_is_enabled,
581
582         .set_mode       = twl4030reg_set_mode,
583
584         .get_status     = twl4030reg_get_status,
585 };
586
587 static struct regulator_ops twl6030fixed_ops = {
588         .list_voltage   = twlfixed_list_voltage,
589
590         .get_voltage    = twlfixed_get_voltage,
591
592         .enable         = twl6030reg_enable,
593         .disable        = twlreg_disable,
594         .is_enabled     = twl6030reg_is_enabled,
595
596         .set_mode       = twl6030reg_set_mode,
597
598         .get_status     = twl6030reg_get_status,
599 };
600
601 static struct regulator_ops twl6030_fixed_resource = {
602         .enable         = twl6030reg_enable,
603         .disable        = twlreg_disable,
604         .is_enabled     = twl6030reg_is_enabled,
605         .get_status     = twl6030reg_get_status,
606 };
607
608 /*----------------------------------------------------------------------*/
609
610 #define TWL4030_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
611                         remap_conf) \
612                 TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
613                         remap_conf, TWL4030, twl4030fixed_ops)
614 #define TWL6030_FIXED_LDO(label, offset, mVolts, num, turnon_delay) \
615                 TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
616                         0x0, TWL6030, twl6030fixed_ops)
617
618 #define TWL4030_ADJUSTABLE_LDO(label, offset, num, turnon_delay, remap_conf) { \
619         .base = offset, \
620         .id = num, \
621         .table_len = ARRAY_SIZE(label##_VSEL_table), \
622         .table = label##_VSEL_table, \
623         .delay = turnon_delay, \
624         .remap = remap_conf, \
625         .desc = { \
626                 .name = #label, \
627                 .id = TWL4030_REG_##label, \
628                 .n_voltages = ARRAY_SIZE(label##_VSEL_table), \
629                 .ops = &twl4030ldo_ops, \
630                 .type = REGULATOR_VOLTAGE, \
631                 .owner = THIS_MODULE, \
632                 }, \
633         }
634
635 #define TWL6030_ADJUSTABLE_LDO(label, offset, min_mVolts, max_mVolts, num) { \
636         .base = offset, \
637         .id = num, \
638         .min_mV = min_mVolts, \
639         .max_mV = max_mVolts, \
640         .desc = { \
641                 .name = #label, \
642                 .id = TWL6030_REG_##label, \
643                 .n_voltages = (max_mVolts - min_mVolts)/100, \
644                 .ops = &twl6030ldo_ops, \
645                 .type = REGULATOR_VOLTAGE, \
646                 .owner = THIS_MODULE, \
647                 }, \
648         }
649
650
651 #define TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, remap_conf, \
652                 family, operations) { \
653         .base = offset, \
654         .id = num, \
655         .min_mV = mVolts, \
656         .delay = turnon_delay, \
657         .remap = remap_conf, \
658         .desc = { \
659                 .name = #label, \
660                 .id = family##_REG_##label, \
661                 .n_voltages = 1, \
662                 .ops = &operations, \
663                 .type = REGULATOR_VOLTAGE, \
664                 .owner = THIS_MODULE, \
665                 }, \
666         }
667
668 #define TWL6030_FIXED_RESOURCE(label, offset, num, turnon_delay) { \
669         .base = offset, \
670         .id = num, \
671         .delay = turnon_delay, \
672         .desc = { \
673                 .name = #label, \
674                 .id = TWL6030_REG_##label, \
675                 .ops = &twl6030_fixed_resource, \
676                 .type = REGULATOR_VOLTAGE, \
677                 .owner = THIS_MODULE, \
678                 }, \
679         }
680
681 /*
682  * We list regulators here if systems need some level of
683  * software control over them after boot.
684  */
685 static struct twlreg_info twl_regs[] = {
686         TWL4030_ADJUSTABLE_LDO(VAUX1, 0x17, 1, 100, 0x08),
687         TWL4030_ADJUSTABLE_LDO(VAUX2_4030, 0x1b, 2, 100, 0x08),
688         TWL4030_ADJUSTABLE_LDO(VAUX2, 0x1b, 2, 100, 0x08),
689         TWL4030_ADJUSTABLE_LDO(VAUX3, 0x1f, 3, 100, 0x08),
690         TWL4030_ADJUSTABLE_LDO(VAUX4, 0x23, 4, 100, 0x08),
691         TWL4030_ADJUSTABLE_LDO(VMMC1, 0x27, 5, 100, 0x08),
692         TWL4030_ADJUSTABLE_LDO(VMMC2, 0x2b, 6, 100, 0x08),
693         TWL4030_ADJUSTABLE_LDO(VPLL1, 0x2f, 7, 100, 0x00),
694         TWL4030_ADJUSTABLE_LDO(VPLL2, 0x33, 8, 100, 0x08),
695         TWL4030_ADJUSTABLE_LDO(VSIM, 0x37, 9, 100, 0x00),
696         TWL4030_ADJUSTABLE_LDO(VDAC, 0x3b, 10, 100, 0x08),
697         TWL4030_FIXED_LDO(VINTANA1, 0x3f, 1500, 11, 100, 0x08),
698         TWL4030_ADJUSTABLE_LDO(VINTANA2, 0x43, 12, 100, 0x08),
699         TWL4030_FIXED_LDO(VINTDIG, 0x47, 1500, 13, 100, 0x08),
700         TWL4030_ADJUSTABLE_LDO(VIO, 0x4b, 14, 1000, 0x08),
701         TWL4030_ADJUSTABLE_LDO(VDD1, 0x55, 15, 1000, 0x08),
702         TWL4030_ADJUSTABLE_LDO(VDD2, 0x63, 16, 1000, 0x08),
703         TWL4030_FIXED_LDO(VUSB1V5, 0x71, 1500, 17, 100, 0x08),
704         TWL4030_FIXED_LDO(VUSB1V8, 0x74, 1800, 18, 100, 0x08),
705         TWL4030_FIXED_LDO(VUSB3V1, 0x77, 3100, 19, 150, 0x08),
706         /* VUSBCP is managed *only* by the USB subchip */
707
708         /* 6030 REG with base as PMC Slave Misc : 0x0030 */
709         /* Turnon-delay and remap configuration values for 6030 are not
710            verified since the specification is not public */
711         TWL6030_ADJUSTABLE_LDO(VAUX1_6030, 0x54, 1000, 3300, 1),
712         TWL6030_ADJUSTABLE_LDO(VAUX2_6030, 0x58, 1000, 3300, 2),
713         TWL6030_ADJUSTABLE_LDO(VAUX3_6030, 0x5c, 1000, 3300, 3),
714         TWL6030_ADJUSTABLE_LDO(VMMC, 0x68, 1000, 3300, 4),
715         TWL6030_ADJUSTABLE_LDO(VPP, 0x6c, 1000, 3300, 5),
716         TWL6030_ADJUSTABLE_LDO(VUSIM, 0x74, 1000, 3300, 7),
717         TWL6030_FIXED_LDO(VANA, 0x50, 2100, 15, 0),
718         TWL6030_FIXED_LDO(VCXIO, 0x60, 1800, 16, 0),
719         TWL6030_FIXED_LDO(VDAC, 0x64, 1800, 17, 0),
720         TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 18, 0),
721         TWL6030_FIXED_RESOURCE(CLK32KG, 0x8C, 48, 0),
722 };
723
724 static int __devinit twlreg_probe(struct platform_device *pdev)
725 {
726         int                             i;
727         struct twlreg_info              *info;
728         struct regulator_init_data      *initdata;
729         struct regulation_constraints   *c;
730         struct regulator_dev            *rdev;
731
732         for (i = 0, info = NULL; i < ARRAY_SIZE(twl_regs); i++) {
733                 if (twl_regs[i].desc.id != pdev->id)
734                         continue;
735                 info = twl_regs + i;
736                 break;
737         }
738         if (!info)
739                 return -ENODEV;
740
741         initdata = pdev->dev.platform_data;
742         if (!initdata)
743                 return -EINVAL;
744
745         /* Constrain board-specific capabilities according to what
746          * this driver and the chip itself can actually do.
747          */
748         c = &initdata->constraints;
749         c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY;
750         c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE
751                                 | REGULATOR_CHANGE_MODE
752                                 | REGULATOR_CHANGE_STATUS;
753         switch (pdev->id) {
754         case TWL4030_REG_VIO:
755         case TWL4030_REG_VDD1:
756         case TWL4030_REG_VDD2:
757         case TWL4030_REG_VPLL1:
758         case TWL4030_REG_VINTANA1:
759         case TWL4030_REG_VINTANA2:
760         case TWL4030_REG_VINTDIG:
761                 c->always_on = true;
762                 break;
763         default:
764                 break;
765         }
766
767         rdev = regulator_register(&info->desc, &pdev->dev, initdata, info);
768         if (IS_ERR(rdev)) {
769                 dev_err(&pdev->dev, "can't register %s, %ld\n",
770                                 info->desc.name, PTR_ERR(rdev));
771                 return PTR_ERR(rdev);
772         }
773         platform_set_drvdata(pdev, rdev);
774
775         if (twl_class_is_4030())
776                 twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_REMAP,
777                                                 info->remap);
778
779         /* NOTE:  many regulators support short-circuit IRQs (presentable
780          * as REGULATOR_OVER_CURRENT notifications?) configured via:
781          *  - SC_CONFIG
782          *  - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4)
783          *  - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2)
784          *  - IT_CONFIG
785          */
786
787         return 0;
788 }
789
790 static int __devexit twlreg_remove(struct platform_device *pdev)
791 {
792         regulator_unregister(platform_get_drvdata(pdev));
793         return 0;
794 }
795
796 MODULE_ALIAS("platform:twl_reg");
797
798 static struct platform_driver twlreg_driver = {
799         .probe          = twlreg_probe,
800         .remove         = __devexit_p(twlreg_remove),
801         /* NOTE: short name, to work around driver model truncation of
802          * "twl_regulator.12" (and friends) to "twl_regulator.1".
803          */
804         .driver.name    = "twl_reg",
805         .driver.owner   = THIS_MODULE,
806 };
807
808 static int __init twlreg_init(void)
809 {
810         return platform_driver_register(&twlreg_driver);
811 }
812 subsys_initcall(twlreg_init);
813
814 static void __exit twlreg_exit(void)
815 {
816         platform_driver_unregister(&twlreg_driver);
817 }
818 module_exit(twlreg_exit)
819
820 MODULE_DESCRIPTION("TWL regulator driver");
821 MODULE_LICENSE("GPL");