REGULATOR: TWL6025: add support to twl-regulator
[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/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         u8                      flags;
55
56         /* used by regulator core */
57         struct regulator_desc   desc;
58
59         /* chip specific features */
60         unsigned long           features;
61 };
62
63
64 /* LDO control registers ... offset is from the base of its register bank.
65  * The first three registers of all power resource banks help hardware to
66  * manage the various resource groups.
67  */
68 /* Common offset in TWL4030/6030 */
69 #define VREG_GRP                0
70 /* TWL4030 register offsets */
71 #define VREG_TYPE               1
72 #define VREG_REMAP              2
73 #define VREG_DEDICATED          3       /* LDO control */
74 /* TWL6030 register offsets */
75 #define VREG_TRANS              1
76 #define VREG_STATE              2
77 #define VREG_VOLTAGE            3
78 #define VREG_VOLTAGE_SMPS       4
79 /* TWL6030 Misc register offsets */
80 #define VREG_BC_ALL             1
81 #define VREG_BC_REF             2
82 #define VREG_BC_PROC            3
83 #define VREG_BC_CLK_RST         4
84
85 /* TWL6030 LDO register values for CFG_STATE */
86 #define TWL6030_CFG_STATE_OFF   0x00
87 #define TWL6030_CFG_STATE_ON    0x01
88 #define TWL6030_CFG_STATE_OFF2  0x02
89 #define TWL6030_CFG_STATE_SLEEP 0x03
90 #define TWL6030_CFG_STATE_GRP_SHIFT     5
91 #define TWL6030_CFG_STATE_APP_SHIFT     2
92 #define TWL6030_CFG_STATE_APP_MASK      (0x03 << TWL6030_CFG_STATE_APP_SHIFT)
93 #define TWL6030_CFG_STATE_APP(v)        (((v) & TWL6030_CFG_STATE_APP_MASK) >>\
94                                                 TWL6030_CFG_STATE_APP_SHIFT)
95
96 /* Flags for SMPS Voltage reading */
97 #define SMPS_OFFSET_EN          BIT(0)
98 #define SMPS_EXTENDED_EN        BIT(1)
99
100 /* twl6025 SMPS EPROM values */
101 #define TWL6030_SMPS_OFFSET             0xB0
102 #define TWL6030_SMPS_MULT               0xB3
103 #define SMPS_MULTOFFSET_SMPS4   BIT(0)
104 #define SMPS_MULTOFFSET_VIO     BIT(1)
105 #define SMPS_MULTOFFSET_SMPS3   BIT(6)
106
107 static inline int
108 twlreg_read(struct twlreg_info *info, unsigned slave_subgp, unsigned offset)
109 {
110         u8 value;
111         int status;
112
113         status = twl_i2c_read_u8(slave_subgp,
114                         &value, info->base + offset);
115         return (status < 0) ? status : value;
116 }
117
118 static inline int
119 twlreg_write(struct twlreg_info *info, unsigned slave_subgp, unsigned offset,
120                                                  u8 value)
121 {
122         return twl_i2c_write_u8(slave_subgp,
123                         value, info->base + offset);
124 }
125
126 /*----------------------------------------------------------------------*/
127
128 /* generic power resource operations, which work on all regulators */
129
130 static int twlreg_grp(struct regulator_dev *rdev)
131 {
132         return twlreg_read(rdev_get_drvdata(rdev), TWL_MODULE_PM_RECEIVER,
133                                                                  VREG_GRP);
134 }
135
136 /*
137  * Enable/disable regulators by joining/leaving the P1 (processor) group.
138  * We assume nobody else is updating the DEV_GRP registers.
139  */
140 /* definition for 4030 family */
141 #define P3_GRP_4030     BIT(7)          /* "peripherals" */
142 #define P2_GRP_4030     BIT(6)          /* secondary processor, modem, etc */
143 #define P1_GRP_4030     BIT(5)          /* CPU/Linux */
144 /* definition for 6030 family */
145 #define P3_GRP_6030     BIT(2)          /* secondary processor, modem, etc */
146 #define P2_GRP_6030     BIT(1)          /* "peripherals" */
147 #define P1_GRP_6030     BIT(0)          /* CPU/Linux */
148
149 static int twl4030reg_is_enabled(struct regulator_dev *rdev)
150 {
151         int     state = twlreg_grp(rdev);
152
153         if (state < 0)
154                 return state;
155
156         return state & P1_GRP_4030;
157 }
158
159 static int twl6030reg_is_enabled(struct regulator_dev *rdev)
160 {
161         struct twlreg_info      *info = rdev_get_drvdata(rdev);
162         int                     grp = 0, val;
163
164         if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS)))
165                 grp = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_GRP);
166         if (grp < 0)
167                 return grp;
168
169         if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS)))
170                 grp &= P1_GRP_6030;
171         else
172                 grp = 1;
173
174         val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
175         val = TWL6030_CFG_STATE_APP(val);
176
177         return grp && (val == TWL6030_CFG_STATE_ON);
178 }
179
180 static int twl4030reg_enable(struct regulator_dev *rdev)
181 {
182         struct twlreg_info      *info = rdev_get_drvdata(rdev);
183         int                     grp;
184         int                     ret;
185
186         grp = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_GRP);
187         if (grp < 0)
188                 return grp;
189
190         grp |= P1_GRP_4030;
191
192         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp);
193
194         udelay(info->delay);
195
196         return ret;
197 }
198
199 static int twl6030reg_enable(struct regulator_dev *rdev)
200 {
201         struct twlreg_info      *info = rdev_get_drvdata(rdev);
202         int                     grp = 0;
203         int                     ret;
204
205         if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS)))
206                 grp = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_GRP);
207         if (grp < 0)
208                 return grp;
209
210         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
211                         grp << TWL6030_CFG_STATE_GRP_SHIFT |
212                         TWL6030_CFG_STATE_ON);
213
214         udelay(info->delay);
215
216         return ret;
217 }
218
219 static int twl4030reg_disable(struct regulator_dev *rdev)
220 {
221         struct twlreg_info      *info = rdev_get_drvdata(rdev);
222         int                     grp;
223         int                     ret;
224
225         grp = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_GRP);
226         if (grp < 0)
227                 return grp;
228
229         grp &= ~(P1_GRP_4030 | P2_GRP_4030 | P3_GRP_4030);
230
231         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp);
232
233         return ret;
234 }
235
236 static int twl6030reg_disable(struct regulator_dev *rdev)
237 {
238         struct twlreg_info      *info = rdev_get_drvdata(rdev);
239         int                     grp = 0;
240         int                     ret;
241
242         if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS)))
243                 grp = P1_GRP_6030 | P2_GRP_6030 | P3_GRP_6030;
244
245         /* For 6030, set the off state for all grps enabled */
246         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
247                         (grp) << TWL6030_CFG_STATE_GRP_SHIFT |
248                         TWL6030_CFG_STATE_OFF);
249
250         return ret;
251 }
252
253 static int twl4030reg_get_status(struct regulator_dev *rdev)
254 {
255         int     state = twlreg_grp(rdev);
256
257         if (state < 0)
258                 return state;
259         state &= 0x0f;
260
261         /* assume state != WARM_RESET; we'd not be running...  */
262         if (!state)
263                 return REGULATOR_STATUS_OFF;
264         return (state & BIT(3))
265                 ? REGULATOR_STATUS_NORMAL
266                 : REGULATOR_STATUS_STANDBY;
267 }
268
269 static int twl6030reg_get_status(struct regulator_dev *rdev)
270 {
271         struct twlreg_info      *info = rdev_get_drvdata(rdev);
272         int                     val;
273
274         val = twlreg_grp(rdev);
275         if (val < 0)
276                 return val;
277
278         val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
279
280         switch (TWL6030_CFG_STATE_APP(val)) {
281         case TWL6030_CFG_STATE_ON:
282                 return REGULATOR_STATUS_NORMAL;
283
284         case TWL6030_CFG_STATE_SLEEP:
285                 return REGULATOR_STATUS_STANDBY;
286
287         case TWL6030_CFG_STATE_OFF:
288         case TWL6030_CFG_STATE_OFF2:
289         default:
290                 break;
291         }
292
293         return REGULATOR_STATUS_OFF;
294 }
295
296 static int twl4030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
297 {
298         struct twlreg_info      *info = rdev_get_drvdata(rdev);
299         unsigned                message;
300         int                     status;
301
302         /* We can only set the mode through state machine commands... */
303         switch (mode) {
304         case REGULATOR_MODE_NORMAL:
305                 message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_ACTIVE);
306                 break;
307         case REGULATOR_MODE_STANDBY:
308                 message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_SLEEP);
309                 break;
310         default:
311                 return -EINVAL;
312         }
313
314         /* Ensure the resource is associated with some group */
315         status = twlreg_grp(rdev);
316         if (status < 0)
317                 return status;
318         if (!(status & (P3_GRP_4030 | P2_GRP_4030 | P1_GRP_4030)))
319                 return -EACCES;
320
321         status = twl_i2c_write_u8(TWL_MODULE_PM_MASTER,
322                         message >> 8, TWL4030_PM_MASTER_PB_WORD_MSB);
323         if (status < 0)
324                 return status;
325
326         return twl_i2c_write_u8(TWL_MODULE_PM_MASTER,
327                         message & 0xff, TWL4030_PM_MASTER_PB_WORD_LSB);
328 }
329
330 static int twl6030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
331 {
332         struct twlreg_info      *info = rdev_get_drvdata(rdev);
333         int grp = 0;
334         int val;
335
336         if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS)))
337                 grp = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_GRP);
338
339         if (grp < 0)
340                 return grp;
341
342         /* Compose the state register settings */
343         val = grp << TWL6030_CFG_STATE_GRP_SHIFT;
344         /* We can only set the mode through state machine commands... */
345         switch (mode) {
346         case REGULATOR_MODE_NORMAL:
347                 val |= TWL6030_CFG_STATE_ON;
348                 break;
349         case REGULATOR_MODE_STANDBY:
350                 val |= TWL6030_CFG_STATE_SLEEP;
351                 break;
352
353         default:
354                 return -EINVAL;
355         }
356
357         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, val);
358 }
359
360 /*----------------------------------------------------------------------*/
361
362 /*
363  * Support for adjustable-voltage LDOs uses a four bit (or less) voltage
364  * select field in its control register.   We use tables indexed by VSEL
365  * to record voltages in milliVolts.  (Accuracy is about three percent.)
366  *
367  * Note that VSEL values for VAUX2 changed in twl5030 and newer silicon;
368  * currently handled by listing two slightly different VAUX2 regulators,
369  * only one of which will be configured.
370  *
371  * VSEL values documented as "TI cannot support these values" are flagged
372  * in these tables as UNSUP() values; we normally won't assign them.
373  *
374  * VAUX3 at 3V is incorrectly listed in some TI manuals as unsupported.
375  * TI are revising the twl5030/tps659x0 specs to support that 3.0V setting.
376  */
377 #ifdef CONFIG_TWL4030_ALLOW_UNSUPPORTED
378 #define UNSUP_MASK      0x0000
379 #else
380 #define UNSUP_MASK      0x8000
381 #endif
382
383 #define UNSUP(x)        (UNSUP_MASK | (x))
384 #define IS_UNSUP(x)     (UNSUP_MASK & (x))
385 #define LDO_MV(x)       (~UNSUP_MASK & (x))
386
387
388 static const u16 VAUX1_VSEL_table[] = {
389         UNSUP(1500), UNSUP(1800), 2500, 2800,
390         3000, 3000, 3000, 3000,
391 };
392 static const u16 VAUX2_4030_VSEL_table[] = {
393         UNSUP(1000), UNSUP(1000), UNSUP(1200), 1300,
394         1500, 1800, UNSUP(1850), 2500,
395         UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000),
396         UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
397 };
398 static const u16 VAUX2_VSEL_table[] = {
399         1700, 1700, 1900, 1300,
400         1500, 1800, 2000, 2500,
401         2100, 2800, 2200, 2300,
402         2400, 2400, 2400, 2400,
403 };
404 static const u16 VAUX3_VSEL_table[] = {
405         1500, 1800, 2500, 2800,
406         3000, 3000, 3000, 3000,
407 };
408 static const u16 VAUX4_VSEL_table[] = {
409         700, 1000, 1200, UNSUP(1300),
410         1500, 1800, UNSUP(1850), 2500,
411         UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000),
412         UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
413 };
414 static const u16 VMMC1_VSEL_table[] = {
415         1850, 2850, 3000, 3150,
416 };
417 static const u16 VMMC2_VSEL_table[] = {
418         UNSUP(1000), UNSUP(1000), UNSUP(1200), UNSUP(1300),
419         UNSUP(1500), UNSUP(1800), 1850, UNSUP(2500),
420         2600, 2800, 2850, 3000,
421         3150, 3150, 3150, 3150,
422 };
423 static const u16 VPLL1_VSEL_table[] = {
424         1000, 1200, 1300, 1800,
425         UNSUP(2800), UNSUP(3000), UNSUP(3000), UNSUP(3000),
426 };
427 static const u16 VPLL2_VSEL_table[] = {
428         700, 1000, 1200, 1300,
429         UNSUP(1500), 1800, UNSUP(1850), UNSUP(2500),
430         UNSUP(2600), UNSUP(2800), UNSUP(2850), UNSUP(3000),
431         UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
432 };
433 static const u16 VSIM_VSEL_table[] = {
434         UNSUP(1000), UNSUP(1200), UNSUP(1300), 1800,
435         2800, 3000, 3000, 3000,
436 };
437 static const u16 VDAC_VSEL_table[] = {
438         1200, 1300, 1800, 1800,
439 };
440 static const u16 VDD1_VSEL_table[] = {
441         800, 1450,
442 };
443 static const u16 VDD2_VSEL_table[] = {
444         800, 1450, 1500,
445 };
446 static const u16 VIO_VSEL_table[] = {
447         1800, 1850,
448 };
449 static const u16 VINTANA2_VSEL_table[] = {
450         2500, 2750,
451 };
452
453 static int twl4030ldo_list_voltage(struct regulator_dev *rdev, unsigned index)
454 {
455         struct twlreg_info      *info = rdev_get_drvdata(rdev);
456         int                     mV = info->table[index];
457
458         return IS_UNSUP(mV) ? 0 : (LDO_MV(mV) * 1000);
459 }
460
461 static int
462 twl4030ldo_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV,
463                        unsigned *selector)
464 {
465         struct twlreg_info      *info = rdev_get_drvdata(rdev);
466         int                     vsel;
467
468         for (vsel = 0; vsel < info->table_len; vsel++) {
469                 int mV = info->table[vsel];
470                 int uV;
471
472                 if (IS_UNSUP(mV))
473                         continue;
474                 uV = LDO_MV(mV) * 1000;
475
476                 /* REVISIT for VAUX2, first match may not be best/lowest */
477
478                 /* use the first in-range value */
479                 if (min_uV <= uV && uV <= max_uV) {
480                         *selector = vsel;
481                         return twlreg_write(info, TWL_MODULE_PM_RECEIVER,
482                                                         VREG_VOLTAGE, vsel);
483                 }
484         }
485
486         return -EDOM;
487 }
488
489 static int twl4030ldo_get_voltage(struct regulator_dev *rdev)
490 {
491         struct twlreg_info      *info = rdev_get_drvdata(rdev);
492         int             vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER,
493                                                                 VREG_VOLTAGE);
494
495         if (vsel < 0)
496                 return vsel;
497
498         vsel &= info->table_len - 1;
499         return LDO_MV(info->table[vsel]) * 1000;
500 }
501
502 static struct regulator_ops twl4030ldo_ops = {
503         .list_voltage   = twl4030ldo_list_voltage,
504
505         .set_voltage    = twl4030ldo_set_voltage,
506         .get_voltage    = twl4030ldo_get_voltage,
507
508         .enable         = twl4030reg_enable,
509         .disable        = twl4030reg_disable,
510         .is_enabled     = twl4030reg_is_enabled,
511
512         .set_mode       = twl4030reg_set_mode,
513
514         .get_status     = twl4030reg_get_status,
515 };
516
517 static int twl6030ldo_list_voltage(struct regulator_dev *rdev, unsigned index)
518 {
519         struct twlreg_info      *info = rdev_get_drvdata(rdev);
520
521         return ((info->min_mV + (index * 100)) * 1000);
522 }
523
524 static int
525 twl6030ldo_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV,
526                        unsigned *selector)
527 {
528         struct twlreg_info      *info = rdev_get_drvdata(rdev);
529         int                     vsel;
530
531         if ((min_uV/1000 < info->min_mV) || (max_uV/1000 > info->max_mV))
532                 return -EDOM;
533
534         /*
535          * Use the below formula to calculate vsel
536          * mV = 1000mv + 100mv * (vsel - 1)
537          */
538         vsel = (min_uV/1000 - 1000)/100 + 1;
539         *selector = vsel;
540         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE, vsel);
541
542 }
543
544 static int twl6030ldo_get_voltage(struct regulator_dev *rdev)
545 {
546         struct twlreg_info      *info = rdev_get_drvdata(rdev);
547         int             vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER,
548                                                                 VREG_VOLTAGE);
549
550         if (vsel < 0)
551                 return vsel;
552
553         /*
554          * Use the below formula to calculate vsel
555          * mV = 1000mv + 100mv * (vsel - 1)
556          */
557         return (1000 + (100 * (vsel - 1))) * 1000;
558 }
559
560 static struct regulator_ops twl6030ldo_ops = {
561         .list_voltage   = twl6030ldo_list_voltage,
562
563         .set_voltage    = twl6030ldo_set_voltage,
564         .get_voltage    = twl6030ldo_get_voltage,
565
566         .enable         = twl6030reg_enable,
567         .disable        = twl6030reg_disable,
568         .is_enabled     = twl6030reg_is_enabled,
569
570         .set_mode       = twl6030reg_set_mode,
571
572         .get_status     = twl6030reg_get_status,
573 };
574
575 /*----------------------------------------------------------------------*/
576
577 /*
578  * Fixed voltage LDOs don't have a VSEL field to update.
579  */
580 static int twlfixed_list_voltage(struct regulator_dev *rdev, unsigned index)
581 {
582         struct twlreg_info      *info = rdev_get_drvdata(rdev);
583
584         return info->min_mV * 1000;
585 }
586
587 static int twlfixed_get_voltage(struct regulator_dev *rdev)
588 {
589         struct twlreg_info      *info = rdev_get_drvdata(rdev);
590
591         return info->min_mV * 1000;
592 }
593
594 static struct regulator_ops twl4030fixed_ops = {
595         .list_voltage   = twlfixed_list_voltage,
596
597         .get_voltage    = twlfixed_get_voltage,
598
599         .enable         = twl4030reg_enable,
600         .disable        = twl4030reg_disable,
601         .is_enabled     = twl4030reg_is_enabled,
602
603         .set_mode       = twl4030reg_set_mode,
604
605         .get_status     = twl4030reg_get_status,
606 };
607
608 static struct regulator_ops twl6030fixed_ops = {
609         .list_voltage   = twlfixed_list_voltage,
610
611         .get_voltage    = twlfixed_get_voltage,
612
613         .enable         = twl6030reg_enable,
614         .disable        = twl6030reg_disable,
615         .is_enabled     = twl6030reg_is_enabled,
616
617         .set_mode       = twl6030reg_set_mode,
618
619         .get_status     = twl6030reg_get_status,
620 };
621
622 static struct regulator_ops twl6030_fixed_resource = {
623         .enable         = twl6030reg_enable,
624         .disable        = twl6030reg_disable,
625         .is_enabled     = twl6030reg_is_enabled,
626         .get_status     = twl6030reg_get_status,
627 };
628
629 /*
630  * SMPS status and control
631  */
632
633 static int twl6030smps_list_voltage(struct regulator_dev *rdev, unsigned index)
634 {
635         struct twlreg_info      *info = rdev_get_drvdata(rdev);
636
637         int voltage = 0;
638
639         switch (info->flags) {
640         case SMPS_OFFSET_EN:
641                 voltage = 100000;
642                 /* fall through */
643         case 0:
644                 switch (index) {
645                 case 0:
646                         voltage = 0;
647                         break;
648                 case 58:
649                         voltage = 1350 * 1000;
650                         break;
651                 case 59:
652                         voltage = 1500 * 1000;
653                         break;
654                 case 60:
655                         voltage = 1800 * 1000;
656                         break;
657                 case 61:
658                         voltage = 1900 * 1000;
659                         break;
660                 case 62:
661                         voltage = 2100 * 1000;
662                         break;
663                 default:
664                         voltage += (600000 + (12500 * (index - 1)));
665                 }
666                 break;
667         case SMPS_EXTENDED_EN:
668                 switch (index) {
669                 case 0:
670                         voltage = 0;
671                         break;
672                 case 58:
673                         voltage = 2084 * 1000;
674                         break;
675                 case 59:
676                         voltage = 2315 * 1000;
677                         break;
678                 case 60:
679                         voltage = 2778 * 1000;
680                         break;
681                 case 61:
682                         voltage = 2932 * 1000;
683                         break;
684                 case 62:
685                         voltage = 3241 * 1000;
686                         break;
687                 default:
688                         voltage = (1852000 + (38600 * (index - 1)));
689                 }
690                 break;
691         case SMPS_OFFSET_EN | SMPS_EXTENDED_EN:
692                 switch (index) {
693                 case 0:
694                         voltage = 0;
695                         break;
696                 case 58:
697                         voltage = 4167 * 1000;
698                         break;
699                 case 59:
700                         voltage = 2315 * 1000;
701                         break;
702                 case 60:
703                         voltage = 2778 * 1000;
704                         break;
705                 case 61:
706                         voltage = 2932 * 1000;
707                         break;
708                 case 62:
709                         voltage = 3241 * 1000;
710                         break;
711                 default:
712                         voltage = (2161000 + (38600 * (index - 1)));
713                 }
714                 break;
715         }
716
717         return voltage;
718 }
719
720 static int
721 twl6030smps_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV,
722                         unsigned int *selector)
723 {
724         struct twlreg_info      *info = rdev_get_drvdata(rdev);
725         int     vsel = 0;
726
727         switch (info->flags) {
728         case 0:
729                 if (min_uV == 0)
730                         vsel = 0;
731                 else if ((min_uV >= 600000) && (max_uV <= 1300000)) {
732                         vsel = (min_uV - 600000) / 125;
733                         if (vsel % 100)
734                                 vsel += 100;
735                         vsel /= 100;
736                         vsel++;
737                 }
738                 /* Values 1..57 for vsel are linear and can be calculated
739                  * values 58..62 are non linear.
740                  */
741                 else if ((min_uV > 1900000) && (max_uV >= 2100000))
742                         vsel = 62;
743                 else if ((min_uV > 1800000) && (max_uV >= 1900000))
744                         vsel = 61;
745                 else if ((min_uV > 1500000) && (max_uV >= 1800000))
746                         vsel = 60;
747                 else if ((min_uV > 1350000) && (max_uV >= 1500000))
748                         vsel = 59;
749                 else if ((min_uV > 1300000) && (max_uV >= 1350000))
750                         vsel = 58;
751                 else
752                         return -EINVAL;
753                 break;
754         case SMPS_OFFSET_EN:
755                 if (min_uV == 0)
756                         vsel = 0;
757                 else if ((min_uV >= 700000) && (max_uV <= 1420000)) {
758                         vsel = (min_uV - 700000) / 125;
759                         if (vsel % 100)
760                                 vsel += 100;
761                         vsel /= 100;
762                         vsel++;
763                 }
764                 /* Values 1..57 for vsel are linear and can be calculated
765                  * values 58..62 are non linear.
766                  */
767                 else if ((min_uV > 1900000) && (max_uV >= 2100000))
768                         vsel = 62;
769                 else if ((min_uV > 1800000) && (max_uV >= 1900000))
770                         vsel = 61;
771                 else if ((min_uV > 1350000) && (max_uV >= 1800000))
772                         vsel = 60;
773                 else if ((min_uV > 1350000) && (max_uV >= 1500000))
774                         vsel = 59;
775                 else if ((min_uV > 1300000) && (max_uV >= 1350000))
776                         vsel = 58;
777                 else
778                         return -EINVAL;
779                 break;
780         case SMPS_EXTENDED_EN:
781                 if (min_uV == 0)
782                         vsel = 0;
783                 else if ((min_uV >= 1852000) && (max_uV <= 4013600)) {
784                         vsel = (min_uV - 1852000) / 386;
785                         if (vsel % 100)
786                                 vsel += 100;
787                         vsel /= 100;
788                         vsel++;
789                 }
790                 break;
791         case SMPS_OFFSET_EN|SMPS_EXTENDED_EN:
792                 if (min_uV == 0)
793                         vsel = 0;
794                 else if ((min_uV >= 2161000) && (max_uV <= 4321000)) {
795                         vsel = (min_uV - 1852000) / 386;
796                         if (vsel % 100)
797                                 vsel += 100;
798                         vsel /= 100;
799                         vsel++;
800                 }
801                 break;
802         }
803
804         *selector = vsel;
805
806         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS,
807                                                         vsel);
808 }
809
810 static int twl6030smps_get_voltage_sel(struct regulator_dev *rdev)
811 {
812         struct twlreg_info      *info = rdev_get_drvdata(rdev);
813
814         return twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS);
815 }
816
817 static struct regulator_ops twlsmps_ops = {
818         .list_voltage           = twl6030smps_list_voltage,
819
820         .set_voltage            = twl6030smps_set_voltage,
821         .get_voltage_sel        = twl6030smps_get_voltage_sel,
822
823         .enable                 = twl6030reg_enable,
824         .disable                = twl6030reg_disable,
825         .is_enabled             = twl6030reg_is_enabled,
826
827         .set_mode               = twl6030reg_set_mode,
828
829         .get_status             = twl6030reg_get_status,
830 };
831
832 /*----------------------------------------------------------------------*/
833
834 #define TWL4030_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
835                         remap_conf) \
836                 TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
837                         remap_conf, TWL4030, twl4030fixed_ops)
838 #define TWL6030_FIXED_LDO(label, offset, mVolts, num, turnon_delay) \
839                 TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
840                         0x0, TWL6030, twl6030fixed_ops)
841
842 #define TWL4030_ADJUSTABLE_LDO(label, offset, num, turnon_delay, remap_conf) { \
843         .base = offset, \
844         .id = num, \
845         .table_len = ARRAY_SIZE(label##_VSEL_table), \
846         .table = label##_VSEL_table, \
847         .delay = turnon_delay, \
848         .remap = remap_conf, \
849         .desc = { \
850                 .name = #label, \
851                 .id = TWL4030_REG_##label, \
852                 .n_voltages = ARRAY_SIZE(label##_VSEL_table), \
853                 .ops = &twl4030ldo_ops, \
854                 .type = REGULATOR_VOLTAGE, \
855                 .owner = THIS_MODULE, \
856                 }, \
857         }
858
859 #define TWL6030_ADJUSTABLE_LDO(label, offset, min_mVolts, max_mVolts, num) { \
860         .base = offset, \
861         .id = num, \
862         .min_mV = min_mVolts, \
863         .max_mV = max_mVolts, \
864         .desc = { \
865                 .name = #label, \
866                 .id = TWL6030_REG_##label, \
867                 .n_voltages = (max_mVolts - min_mVolts)/100, \
868                 .ops = &twl6030ldo_ops, \
869                 .type = REGULATOR_VOLTAGE, \
870                 .owner = THIS_MODULE, \
871                 }, \
872         }
873
874 #define TWL6025_ADJUSTABLE_LDO(label, offset, min_mVolts, max_mVolts, num) { \
875         .base = offset, \
876         .id = num, \
877         .min_mV = min_mVolts, \
878         .max_mV = max_mVolts, \
879         .desc = { \
880                 .name = #label, \
881                 .id = TWL6025_REG_##label, \
882                 .n_voltages = ((max_mVolts - min_mVolts)/100) + 1, \
883                 .ops = &twl6030ldo_ops, \
884                 .type = REGULATOR_VOLTAGE, \
885                 .owner = THIS_MODULE, \
886                 }, \
887         }
888
889 #define TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, remap_conf, \
890                 family, operations) { \
891         .base = offset, \
892         .id = num, \
893         .min_mV = mVolts, \
894         .delay = turnon_delay, \
895         .remap = remap_conf, \
896         .desc = { \
897                 .name = #label, \
898                 .id = family##_REG_##label, \
899                 .n_voltages = 1, \
900                 .ops = &operations, \
901                 .type = REGULATOR_VOLTAGE, \
902                 .owner = THIS_MODULE, \
903                 }, \
904         }
905
906 #define TWL6030_FIXED_RESOURCE(label, offset, num, turnon_delay) { \
907         .base = offset, \
908         .id = num, \
909         .delay = turnon_delay, \
910         .desc = { \
911                 .name = #label, \
912                 .id = TWL6030_REG_##label, \
913                 .ops = &twl6030_fixed_resource, \
914                 .type = REGULATOR_VOLTAGE, \
915                 .owner = THIS_MODULE, \
916                 }, \
917         }
918
919 #define TWL6025_ADJUSTABLE_SMPS(label, offset, num) { \
920         .base = offset, \
921         .id = num, \
922         .min_mV = 600, \
923         .max_mV = 2100, \
924         .desc = { \
925                 .name = #label, \
926                 .id = TWL6025_REG_##label, \
927                 .n_voltages = 63, \
928                 .ops = &twlsmps_ops, \
929                 .type = REGULATOR_VOLTAGE, \
930                 .owner = THIS_MODULE, \
931                 }, \
932         }
933
934 /*
935  * We list regulators here if systems need some level of
936  * software control over them after boot.
937  */
938 static struct twlreg_info twl_regs[] = {
939         TWL4030_ADJUSTABLE_LDO(VAUX1, 0x17, 1, 100, 0x08),
940         TWL4030_ADJUSTABLE_LDO(VAUX2_4030, 0x1b, 2, 100, 0x08),
941         TWL4030_ADJUSTABLE_LDO(VAUX2, 0x1b, 2, 100, 0x08),
942         TWL4030_ADJUSTABLE_LDO(VAUX3, 0x1f, 3, 100, 0x08),
943         TWL4030_ADJUSTABLE_LDO(VAUX4, 0x23, 4, 100, 0x08),
944         TWL4030_ADJUSTABLE_LDO(VMMC1, 0x27, 5, 100, 0x08),
945         TWL4030_ADJUSTABLE_LDO(VMMC2, 0x2b, 6, 100, 0x08),
946         TWL4030_ADJUSTABLE_LDO(VPLL1, 0x2f, 7, 100, 0x00),
947         TWL4030_ADJUSTABLE_LDO(VPLL2, 0x33, 8, 100, 0x08),
948         TWL4030_ADJUSTABLE_LDO(VSIM, 0x37, 9, 100, 0x00),
949         TWL4030_ADJUSTABLE_LDO(VDAC, 0x3b, 10, 100, 0x08),
950         TWL4030_FIXED_LDO(VINTANA1, 0x3f, 1500, 11, 100, 0x08),
951         TWL4030_ADJUSTABLE_LDO(VINTANA2, 0x43, 12, 100, 0x08),
952         TWL4030_FIXED_LDO(VINTDIG, 0x47, 1500, 13, 100, 0x08),
953         TWL4030_ADJUSTABLE_LDO(VIO, 0x4b, 14, 1000, 0x08),
954         TWL4030_ADJUSTABLE_LDO(VDD1, 0x55, 15, 1000, 0x08),
955         TWL4030_ADJUSTABLE_LDO(VDD2, 0x63, 16, 1000, 0x08),
956         TWL4030_FIXED_LDO(VUSB1V5, 0x71, 1500, 17, 100, 0x08),
957         TWL4030_FIXED_LDO(VUSB1V8, 0x74, 1800, 18, 100, 0x08),
958         TWL4030_FIXED_LDO(VUSB3V1, 0x77, 3100, 19, 150, 0x08),
959         /* VUSBCP is managed *only* by the USB subchip */
960
961         /* 6030 REG with base as PMC Slave Misc : 0x0030 */
962         /* Turnon-delay and remap configuration values for 6030 are not
963            verified since the specification is not public */
964         TWL6030_ADJUSTABLE_LDO(VAUX1_6030, 0x54, 1000, 3300, 1),
965         TWL6030_ADJUSTABLE_LDO(VAUX2_6030, 0x58, 1000, 3300, 2),
966         TWL6030_ADJUSTABLE_LDO(VAUX3_6030, 0x5c, 1000, 3300, 3),
967         TWL6030_ADJUSTABLE_LDO(VMMC, 0x68, 1000, 3300, 4),
968         TWL6030_ADJUSTABLE_LDO(VPP, 0x6c, 1000, 3300, 5),
969         TWL6030_ADJUSTABLE_LDO(VUSIM, 0x74, 1000, 3300, 7),
970         TWL6030_FIXED_LDO(VANA, 0x50, 2100, 15, 0),
971         TWL6030_FIXED_LDO(VCXIO, 0x60, 1800, 16, 0),
972         TWL6030_FIXED_LDO(VDAC, 0x64, 1800, 17, 0),
973         TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 18, 0),
974         TWL6030_FIXED_RESOURCE(CLK32KG, 0x8C, 48, 0),
975
976         /* 6025 are renamed compared to 6030 versions */
977         TWL6025_ADJUSTABLE_LDO(LDO2, 0x54, 1000, 3300, 1),
978         TWL6025_ADJUSTABLE_LDO(LDO4, 0x58, 1000, 3300, 2),
979         TWL6025_ADJUSTABLE_LDO(LDO3, 0x5c, 1000, 3300, 3),
980         TWL6025_ADJUSTABLE_LDO(LDO5, 0x68, 1000, 3300, 4),
981         TWL6025_ADJUSTABLE_LDO(LDO1, 0x6c, 1000, 3300, 5),
982         TWL6025_ADJUSTABLE_LDO(LDO7, 0x74, 1000, 3300, 7),
983         TWL6025_ADJUSTABLE_LDO(LDO6, 0x60, 1000, 3300, 16),
984         TWL6025_ADJUSTABLE_LDO(LDOLN, 0x64, 1000, 3300, 17),
985         TWL6025_ADJUSTABLE_LDO(LDOUSB, 0x70, 1000, 3300, 18),
986
987         TWL6025_ADJUSTABLE_SMPS(SMPS3, 0x34, 1),
988         TWL6025_ADJUSTABLE_SMPS(SMPS4, 0x10, 2),
989         TWL6025_ADJUSTABLE_SMPS(VIO, 0x16, 3),
990 };
991
992 static u8 twl_get_smps_offset(void)
993 {
994         u8 value;
995
996         twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
997                         TWL6030_SMPS_OFFSET);
998         return value;
999 }
1000
1001 static u8 twl_get_smps_mult(void)
1002 {
1003         u8 value;
1004
1005         twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
1006                         TWL6030_SMPS_MULT);
1007         return value;
1008 }
1009
1010 static int __devinit twlreg_probe(struct platform_device *pdev)
1011 {
1012         int                             i;
1013         struct twlreg_info              *info;
1014         struct regulator_init_data      *initdata;
1015         struct regulation_constraints   *c;
1016         struct regulator_dev            *rdev;
1017
1018         for (i = 0, info = NULL; i < ARRAY_SIZE(twl_regs); i++) {
1019                 if (twl_regs[i].desc.id != pdev->id)
1020                         continue;
1021                 info = twl_regs + i;
1022                 break;
1023         }
1024         if (!info)
1025                 return -ENODEV;
1026
1027         initdata = pdev->dev.platform_data;
1028         if (!initdata)
1029                 return -EINVAL;
1030
1031         /* copy the features into regulator data */
1032         info->features = (unsigned long)initdata->driver_data;
1033
1034         /* Constrain board-specific capabilities according to what
1035          * this driver and the chip itself can actually do.
1036          */
1037         c = &initdata->constraints;
1038         c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY;
1039         c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE
1040                                 | REGULATOR_CHANGE_MODE
1041                                 | REGULATOR_CHANGE_STATUS;
1042         switch (pdev->id) {
1043         case TWL4030_REG_VIO:
1044         case TWL4030_REG_VDD1:
1045         case TWL4030_REG_VDD2:
1046         case TWL4030_REG_VPLL1:
1047         case TWL4030_REG_VINTANA1:
1048         case TWL4030_REG_VINTANA2:
1049         case TWL4030_REG_VINTDIG:
1050                 c->always_on = true;
1051                 break;
1052         default:
1053                 break;
1054         }
1055
1056         switch (pdev->id) {
1057         case TWL6025_REG_SMPS3:
1058                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS3)
1059                         info->flags |= SMPS_EXTENDED_EN;
1060                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS3)
1061                         info->flags |= SMPS_OFFSET_EN;
1062                 break;
1063         case TWL6025_REG_SMPS4:
1064                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS4)
1065                         info->flags |= SMPS_EXTENDED_EN;
1066                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS4)
1067                         info->flags |= SMPS_OFFSET_EN;
1068                 break;
1069         case TWL6025_REG_VIO:
1070                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_VIO)
1071                         info->flags |= SMPS_EXTENDED_EN;
1072                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_VIO)
1073                         info->flags |= SMPS_OFFSET_EN;
1074                 break;
1075         }
1076
1077         rdev = regulator_register(&info->desc, &pdev->dev, initdata, info);
1078         if (IS_ERR(rdev)) {
1079                 dev_err(&pdev->dev, "can't register %s, %ld\n",
1080                                 info->desc.name, PTR_ERR(rdev));
1081                 return PTR_ERR(rdev);
1082         }
1083         platform_set_drvdata(pdev, rdev);
1084
1085         if (twl_class_is_4030())
1086                 twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_REMAP,
1087                                                 info->remap);
1088
1089         /* NOTE:  many regulators support short-circuit IRQs (presentable
1090          * as REGULATOR_OVER_CURRENT notifications?) configured via:
1091          *  - SC_CONFIG
1092          *  - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4)
1093          *  - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2)
1094          *  - IT_CONFIG
1095          */
1096
1097         return 0;
1098 }
1099
1100 static int __devexit twlreg_remove(struct platform_device *pdev)
1101 {
1102         regulator_unregister(platform_get_drvdata(pdev));
1103         return 0;
1104 }
1105
1106 MODULE_ALIAS("platform:twl_reg");
1107
1108 static struct platform_driver twlreg_driver = {
1109         .probe          = twlreg_probe,
1110         .remove         = __devexit_p(twlreg_remove),
1111         /* NOTE: short name, to work around driver model truncation of
1112          * "twl_regulator.12" (and friends) to "twl_regulator.1".
1113          */
1114         .driver.name    = "twl_reg",
1115         .driver.owner   = THIS_MODULE,
1116 };
1117
1118 static int __init twlreg_init(void)
1119 {
1120         return platform_driver_register(&twlreg_driver);
1121 }
1122 subsys_initcall(twlreg_init);
1123
1124 static void __exit twlreg_exit(void)
1125 {
1126         platform_driver_unregister(&twlreg_driver);
1127 }
1128 module_exit(twlreg_exit)
1129
1130 MODULE_DESCRIPTION("TWL regulator driver");
1131 MODULE_LICENSE("GPL");