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Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
[deliverable/linux.git] / drivers / regulator / twl-regulator.c
1 /*
2 * twl-regulator.c -- support regulators in twl4030/twl6030 family chips
3 *
4 * Copyright (C) 2008 David Brownell
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 */
11
12 #include <linux/module.h>
13 #include <linux/init.h>
14 #include <linux/err.h>
15 #include <linux/platform_device.h>
16 #include <linux/of.h>
17 #include <linux/of_device.h>
18 #include <linux/regulator/driver.h>
19 #include <linux/regulator/machine.h>
20 #include <linux/regulator/of_regulator.h>
21 #include <linux/i2c/twl.h>
22
23
24 /*
25 * The TWL4030/TW5030/TPS659x0/TWL6030 family chips include power management, a
26 * USB OTG transceiver, an RTC, ADC, PWM, and lots more. Some versions
27 * include an audio codec, battery charger, and more voltage regulators.
28 * These chips are often used in OMAP-based systems.
29 *
30 * This driver implements software-based resource control for various
31 * voltage regulators. This is usually augmented with state machine
32 * based control.
33 */
34
35 struct twlreg_info {
36 /* start of regulator's PM_RECEIVER control register bank */
37 u8 base;
38
39 /* twl resource ID, for resource control state machine */
40 u8 id;
41
42 /* voltage in mV = table[VSEL]; table_len must be a power-of-two */
43 u8 table_len;
44 const u16 *table;
45
46 /* regulator specific turn-on delay */
47 u16 delay;
48
49 /* State REMAP default configuration */
50 u8 remap;
51
52 /* chip constraints on regulator behavior */
53 u16 min_mV;
54 u16 max_mV;
55
56 u8 flags;
57
58 /* used by regulator core */
59 struct regulator_desc desc;
60
61 /* chip specific features */
62 unsigned long features;
63
64 /*
65 * optional override functions for voltage set/get
66 * these are currently only used for SMPS regulators
67 */
68 int (*get_voltage)(void *data);
69 int (*set_voltage)(void *data, int target_uV);
70
71 /* data passed from board for external get/set voltage */
72 void *data;
73 };
74
75
76 /* LDO control registers ... offset is from the base of its register bank.
77 * The first three registers of all power resource banks help hardware to
78 * manage the various resource groups.
79 */
80 /* Common offset in TWL4030/6030 */
81 #define VREG_GRP 0
82 /* TWL4030 register offsets */
83 #define VREG_TYPE 1
84 #define VREG_REMAP 2
85 #define VREG_DEDICATED 3 /* LDO control */
86 #define VREG_VOLTAGE_SMPS_4030 9
87 /* TWL6030 register offsets */
88 #define VREG_TRANS 1
89 #define VREG_STATE 2
90 #define VREG_VOLTAGE 3
91 #define VREG_VOLTAGE_SMPS 4
92 /* TWL6030 Misc register offsets */
93 #define VREG_BC_ALL 1
94 #define VREG_BC_REF 2
95 #define VREG_BC_PROC 3
96 #define VREG_BC_CLK_RST 4
97
98 /* TWL6030 LDO register values for CFG_STATE */
99 #define TWL6030_CFG_STATE_OFF 0x00
100 #define TWL6030_CFG_STATE_ON 0x01
101 #define TWL6030_CFG_STATE_OFF2 0x02
102 #define TWL6030_CFG_STATE_SLEEP 0x03
103 #define TWL6030_CFG_STATE_GRP_SHIFT 5
104 #define TWL6030_CFG_STATE_APP_SHIFT 2
105 #define TWL6030_CFG_STATE_APP_MASK (0x03 << TWL6030_CFG_STATE_APP_SHIFT)
106 #define TWL6030_CFG_STATE_APP(v) (((v) & TWL6030_CFG_STATE_APP_MASK) >>\
107 TWL6030_CFG_STATE_APP_SHIFT)
108
109 /* Flags for SMPS Voltage reading */
110 #define SMPS_OFFSET_EN BIT(0)
111 #define SMPS_EXTENDED_EN BIT(1)
112
113 /* twl6025 SMPS EPROM values */
114 #define TWL6030_SMPS_OFFSET 0xB0
115 #define TWL6030_SMPS_MULT 0xB3
116 #define SMPS_MULTOFFSET_SMPS4 BIT(0)
117 #define SMPS_MULTOFFSET_VIO BIT(1)
118 #define SMPS_MULTOFFSET_SMPS3 BIT(6)
119
120 static inline int
121 twlreg_read(struct twlreg_info *info, unsigned slave_subgp, unsigned offset)
122 {
123 u8 value;
124 int status;
125
126 status = twl_i2c_read_u8(slave_subgp,
127 &value, info->base + offset);
128 return (status < 0) ? status : value;
129 }
130
131 static inline int
132 twlreg_write(struct twlreg_info *info, unsigned slave_subgp, unsigned offset,
133 u8 value)
134 {
135 return twl_i2c_write_u8(slave_subgp,
136 value, info->base + offset);
137 }
138
139 /*----------------------------------------------------------------------*/
140
141 /* generic power resource operations, which work on all regulators */
142
143 static int twlreg_grp(struct regulator_dev *rdev)
144 {
145 return twlreg_read(rdev_get_drvdata(rdev), TWL_MODULE_PM_RECEIVER,
146 VREG_GRP);
147 }
148
149 /*
150 * Enable/disable regulators by joining/leaving the P1 (processor) group.
151 * We assume nobody else is updating the DEV_GRP registers.
152 */
153 /* definition for 4030 family */
154 #define P3_GRP_4030 BIT(7) /* "peripherals" */
155 #define P2_GRP_4030 BIT(6) /* secondary processor, modem, etc */
156 #define P1_GRP_4030 BIT(5) /* CPU/Linux */
157 /* definition for 6030 family */
158 #define P3_GRP_6030 BIT(2) /* secondary processor, modem, etc */
159 #define P2_GRP_6030 BIT(1) /* "peripherals" */
160 #define P1_GRP_6030 BIT(0) /* CPU/Linux */
161
162 static int twl4030reg_is_enabled(struct regulator_dev *rdev)
163 {
164 int state = twlreg_grp(rdev);
165
166 if (state < 0)
167 return state;
168
169 return state & P1_GRP_4030;
170 }
171
172 static int twl6030reg_is_enabled(struct regulator_dev *rdev)
173 {
174 struct twlreg_info *info = rdev_get_drvdata(rdev);
175 int grp = 0, val;
176
177 if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS))) {
178 grp = twlreg_grp(rdev);
179 if (grp < 0)
180 return grp;
181 grp &= P1_GRP_6030;
182 } else {
183 grp = 1;
184 }
185
186 val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
187 val = TWL6030_CFG_STATE_APP(val);
188
189 return grp && (val == TWL6030_CFG_STATE_ON);
190 }
191
192 static int twl4030reg_enable(struct regulator_dev *rdev)
193 {
194 struct twlreg_info *info = rdev_get_drvdata(rdev);
195 int grp;
196 int ret;
197
198 grp = twlreg_grp(rdev);
199 if (grp < 0)
200 return grp;
201
202 grp |= P1_GRP_4030;
203
204 ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp);
205
206 return ret;
207 }
208
209 static int twl6030reg_enable(struct regulator_dev *rdev)
210 {
211 struct twlreg_info *info = rdev_get_drvdata(rdev);
212 int grp = 0;
213 int ret;
214
215 if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS)))
216 grp = twlreg_grp(rdev);
217 if (grp < 0)
218 return grp;
219
220 ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
221 grp << TWL6030_CFG_STATE_GRP_SHIFT |
222 TWL6030_CFG_STATE_ON);
223 return ret;
224 }
225
226 static int twl4030reg_enable_time(struct regulator_dev *rdev)
227 {
228 struct twlreg_info *info = rdev_get_drvdata(rdev);
229
230 return info->delay;
231 }
232
233 static int twl6030reg_enable_time(struct regulator_dev *rdev)
234 {
235 struct twlreg_info *info = rdev_get_drvdata(rdev);
236
237 return info->delay;
238 }
239
240 static int twl4030reg_disable(struct regulator_dev *rdev)
241 {
242 struct twlreg_info *info = rdev_get_drvdata(rdev);
243 int grp;
244 int ret;
245
246 grp = twlreg_grp(rdev);
247 if (grp < 0)
248 return grp;
249
250 grp &= ~(P1_GRP_4030 | P2_GRP_4030 | P3_GRP_4030);
251
252 ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp);
253
254 return ret;
255 }
256
257 static int twl6030reg_disable(struct regulator_dev *rdev)
258 {
259 struct twlreg_info *info = rdev_get_drvdata(rdev);
260 int grp = 0;
261 int ret;
262
263 if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS)))
264 grp = P1_GRP_6030 | P2_GRP_6030 | P3_GRP_6030;
265
266 /* For 6030, set the off state for all grps enabled */
267 ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
268 (grp) << TWL6030_CFG_STATE_GRP_SHIFT |
269 TWL6030_CFG_STATE_OFF);
270
271 return ret;
272 }
273
274 static int twl4030reg_get_status(struct regulator_dev *rdev)
275 {
276 int state = twlreg_grp(rdev);
277
278 if (state < 0)
279 return state;
280 state &= 0x0f;
281
282 /* assume state != WARM_RESET; we'd not be running... */
283 if (!state)
284 return REGULATOR_STATUS_OFF;
285 return (state & BIT(3))
286 ? REGULATOR_STATUS_NORMAL
287 : REGULATOR_STATUS_STANDBY;
288 }
289
290 static int twl6030reg_get_status(struct regulator_dev *rdev)
291 {
292 struct twlreg_info *info = rdev_get_drvdata(rdev);
293 int val;
294
295 val = twlreg_grp(rdev);
296 if (val < 0)
297 return val;
298
299 val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
300
301 switch (TWL6030_CFG_STATE_APP(val)) {
302 case TWL6030_CFG_STATE_ON:
303 return REGULATOR_STATUS_NORMAL;
304
305 case TWL6030_CFG_STATE_SLEEP:
306 return REGULATOR_STATUS_STANDBY;
307
308 case TWL6030_CFG_STATE_OFF:
309 case TWL6030_CFG_STATE_OFF2:
310 default:
311 break;
312 }
313
314 return REGULATOR_STATUS_OFF;
315 }
316
317 static int twl4030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
318 {
319 struct twlreg_info *info = rdev_get_drvdata(rdev);
320 unsigned message;
321 int status;
322
323 /* We can only set the mode through state machine commands... */
324 switch (mode) {
325 case REGULATOR_MODE_NORMAL:
326 message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_ACTIVE);
327 break;
328 case REGULATOR_MODE_STANDBY:
329 message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_SLEEP);
330 break;
331 default:
332 return -EINVAL;
333 }
334
335 /* Ensure the resource is associated with some group */
336 status = twlreg_grp(rdev);
337 if (status < 0)
338 return status;
339 if (!(status & (P3_GRP_4030 | P2_GRP_4030 | P1_GRP_4030)))
340 return -EACCES;
341
342 status = twl_i2c_write_u8(TWL_MODULE_PM_MASTER,
343 message >> 8, TWL4030_PM_MASTER_PB_WORD_MSB);
344 if (status < 0)
345 return status;
346
347 return twl_i2c_write_u8(TWL_MODULE_PM_MASTER,
348 message & 0xff, TWL4030_PM_MASTER_PB_WORD_LSB);
349 }
350
351 static int twl6030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
352 {
353 struct twlreg_info *info = rdev_get_drvdata(rdev);
354 int grp = 0;
355 int val;
356
357 if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS)))
358 grp = twlreg_grp(rdev);
359
360 if (grp < 0)
361 return grp;
362
363 /* Compose the state register settings */
364 val = grp << TWL6030_CFG_STATE_GRP_SHIFT;
365 /* We can only set the mode through state machine commands... */
366 switch (mode) {
367 case REGULATOR_MODE_NORMAL:
368 val |= TWL6030_CFG_STATE_ON;
369 break;
370 case REGULATOR_MODE_STANDBY:
371 val |= TWL6030_CFG_STATE_SLEEP;
372 break;
373
374 default:
375 return -EINVAL;
376 }
377
378 return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, val);
379 }
380
381 /*----------------------------------------------------------------------*/
382
383 /*
384 * Support for adjustable-voltage LDOs uses a four bit (or less) voltage
385 * select field in its control register. We use tables indexed by VSEL
386 * to record voltages in milliVolts. (Accuracy is about three percent.)
387 *
388 * Note that VSEL values for VAUX2 changed in twl5030 and newer silicon;
389 * currently handled by listing two slightly different VAUX2 regulators,
390 * only one of which will be configured.
391 *
392 * VSEL values documented as "TI cannot support these values" are flagged
393 * in these tables as UNSUP() values; we normally won't assign them.
394 *
395 * VAUX3 at 3V is incorrectly listed in some TI manuals as unsupported.
396 * TI are revising the twl5030/tps659x0 specs to support that 3.0V setting.
397 */
398 #define UNSUP_MASK 0x8000
399
400 #define UNSUP(x) (UNSUP_MASK | (x))
401 #define IS_UNSUP(info, x) \
402 ((UNSUP_MASK & (x)) && \
403 !((info)->features & TWL4030_ALLOW_UNSUPPORTED))
404 #define LDO_MV(x) (~UNSUP_MASK & (x))
405
406
407 static const u16 VAUX1_VSEL_table[] = {
408 UNSUP(1500), UNSUP(1800), 2500, 2800,
409 3000, 3000, 3000, 3000,
410 };
411 static const u16 VAUX2_4030_VSEL_table[] = {
412 UNSUP(1000), UNSUP(1000), UNSUP(1200), 1300,
413 1500, 1800, UNSUP(1850), 2500,
414 UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000),
415 UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
416 };
417 static const u16 VAUX2_VSEL_table[] = {
418 1700, 1700, 1900, 1300,
419 1500, 1800, 2000, 2500,
420 2100, 2800, 2200, 2300,
421 2400, 2400, 2400, 2400,
422 };
423 static const u16 VAUX3_VSEL_table[] = {
424 1500, 1800, 2500, 2800,
425 3000, 3000, 3000, 3000,
426 };
427 static const u16 VAUX4_VSEL_table[] = {
428 700, 1000, 1200, UNSUP(1300),
429 1500, 1800, UNSUP(1850), 2500,
430 UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000),
431 UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
432 };
433 static const u16 VMMC1_VSEL_table[] = {
434 1850, 2850, 3000, 3150,
435 };
436 static const u16 VMMC2_VSEL_table[] = {
437 UNSUP(1000), UNSUP(1000), UNSUP(1200), UNSUP(1300),
438 UNSUP(1500), UNSUP(1800), 1850, UNSUP(2500),
439 2600, 2800, 2850, 3000,
440 3150, 3150, 3150, 3150,
441 };
442 static const u16 VPLL1_VSEL_table[] = {
443 1000, 1200, 1300, 1800,
444 UNSUP(2800), UNSUP(3000), UNSUP(3000), UNSUP(3000),
445 };
446 static const u16 VPLL2_VSEL_table[] = {
447 700, 1000, 1200, 1300,
448 UNSUP(1500), 1800, UNSUP(1850), UNSUP(2500),
449 UNSUP(2600), UNSUP(2800), UNSUP(2850), UNSUP(3000),
450 UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
451 };
452 static const u16 VSIM_VSEL_table[] = {
453 UNSUP(1000), UNSUP(1200), UNSUP(1300), 1800,
454 2800, 3000, 3000, 3000,
455 };
456 static const u16 VDAC_VSEL_table[] = {
457 1200, 1300, 1800, 1800,
458 };
459 static const u16 VDD1_VSEL_table[] = {
460 800, 1450,
461 };
462 static const u16 VDD2_VSEL_table[] = {
463 800, 1450, 1500,
464 };
465 static const u16 VIO_VSEL_table[] = {
466 1800, 1850,
467 };
468 static const u16 VINTANA2_VSEL_table[] = {
469 2500, 2750,
470 };
471
472 static int twl4030ldo_list_voltage(struct regulator_dev *rdev, unsigned index)
473 {
474 struct twlreg_info *info = rdev_get_drvdata(rdev);
475 int mV = info->table[index];
476
477 return IS_UNSUP(info, mV) ? 0 : (LDO_MV(mV) * 1000);
478 }
479
480 static int
481 twl4030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
482 {
483 struct twlreg_info *info = rdev_get_drvdata(rdev);
484
485 return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE,
486 selector);
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_sel = twl4030ldo_set_voltage_sel,
506 .get_voltage = twl4030ldo_get_voltage,
507
508 .enable = twl4030reg_enable,
509 .disable = twl4030reg_disable,
510 .is_enabled = twl4030reg_is_enabled,
511 .enable_time = twl4030reg_enable_time,
512
513 .set_mode = twl4030reg_set_mode,
514
515 .get_status = twl4030reg_get_status,
516 };
517
518 static int
519 twl4030smps_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV,
520 unsigned *selector)
521 {
522 struct twlreg_info *info = rdev_get_drvdata(rdev);
523 int vsel = DIV_ROUND_UP(min_uV - 600000, 12500);
524
525 if (info->set_voltage) {
526 return info->set_voltage(info->data, min_uV);
527 } else {
528 twlreg_write(info, TWL_MODULE_PM_RECEIVER,
529 VREG_VOLTAGE_SMPS_4030, vsel);
530 }
531
532 return 0;
533 }
534
535 static int twl4030smps_get_voltage(struct regulator_dev *rdev)
536 {
537 struct twlreg_info *info = rdev_get_drvdata(rdev);
538 int vsel;
539
540 if (info->get_voltage)
541 return info->get_voltage(info->data);
542
543 vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER,
544 VREG_VOLTAGE_SMPS_4030);
545
546 return vsel * 12500 + 600000;
547 }
548
549 static struct regulator_ops twl4030smps_ops = {
550 .set_voltage = twl4030smps_set_voltage,
551 .get_voltage = twl4030smps_get_voltage,
552 };
553
554 static int twl6030coresmps_set_voltage(struct regulator_dev *rdev, int min_uV,
555 int max_uV, unsigned *selector)
556 {
557 struct twlreg_info *info = rdev_get_drvdata(rdev);
558
559 if (info->set_voltage)
560 return info->set_voltage(info->data, min_uV);
561
562 return -ENODEV;
563 }
564
565 static int twl6030coresmps_get_voltage(struct regulator_dev *rdev)
566 {
567 struct twlreg_info *info = rdev_get_drvdata(rdev);
568
569 if (info->get_voltage)
570 return info->get_voltage(info->data);
571
572 return -ENODEV;
573 }
574
575 static struct regulator_ops twl6030coresmps_ops = {
576 .set_voltage = twl6030coresmps_set_voltage,
577 .get_voltage = twl6030coresmps_get_voltage,
578 };
579
580 static int twl6030ldo_list_voltage(struct regulator_dev *rdev, unsigned index)
581 {
582 struct twlreg_info *info = rdev_get_drvdata(rdev);
583
584 return ((info->min_mV + (index * 100)) * 1000);
585 }
586
587 static int
588 twl6030ldo_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV,
589 unsigned *selector)
590 {
591 struct twlreg_info *info = rdev_get_drvdata(rdev);
592 int vsel;
593
594 if ((min_uV/1000 < info->min_mV) || (max_uV/1000 > info->max_mV))
595 return -EDOM;
596
597 /*
598 * Use the below formula to calculate vsel
599 * mV = 1000mv + 100mv * (vsel - 1)
600 */
601 vsel = (min_uV/1000 - 1000)/100 + 1;
602 *selector = vsel;
603 return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE, vsel);
604
605 }
606
607 static int twl6030ldo_get_voltage(struct regulator_dev *rdev)
608 {
609 struct twlreg_info *info = rdev_get_drvdata(rdev);
610 int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER,
611 VREG_VOLTAGE);
612
613 if (vsel < 0)
614 return vsel;
615
616 /*
617 * Use the below formula to calculate vsel
618 * mV = 1000mv + 100mv * (vsel - 1)
619 */
620 return (1000 + (100 * (vsel - 1))) * 1000;
621 }
622
623 static struct regulator_ops twl6030ldo_ops = {
624 .list_voltage = twl6030ldo_list_voltage,
625
626 .set_voltage = twl6030ldo_set_voltage,
627 .get_voltage = twl6030ldo_get_voltage,
628
629 .enable = twl6030reg_enable,
630 .disable = twl6030reg_disable,
631 .is_enabled = twl6030reg_is_enabled,
632 .enable_time = twl6030reg_enable_time,
633
634 .set_mode = twl6030reg_set_mode,
635
636 .get_status = twl6030reg_get_status,
637 };
638
639 /*----------------------------------------------------------------------*/
640
641 /*
642 * Fixed voltage LDOs don't have a VSEL field to update.
643 */
644 static int twlfixed_list_voltage(struct regulator_dev *rdev, unsigned index)
645 {
646 struct twlreg_info *info = rdev_get_drvdata(rdev);
647
648 return info->min_mV * 1000;
649 }
650
651 static int twlfixed_get_voltage(struct regulator_dev *rdev)
652 {
653 struct twlreg_info *info = rdev_get_drvdata(rdev);
654
655 return info->min_mV * 1000;
656 }
657
658 static struct regulator_ops twl4030fixed_ops = {
659 .list_voltage = twlfixed_list_voltage,
660
661 .get_voltage = twlfixed_get_voltage,
662
663 .enable = twl4030reg_enable,
664 .disable = twl4030reg_disable,
665 .is_enabled = twl4030reg_is_enabled,
666 .enable_time = twl4030reg_enable_time,
667
668 .set_mode = twl4030reg_set_mode,
669
670 .get_status = twl4030reg_get_status,
671 };
672
673 static struct regulator_ops twl6030fixed_ops = {
674 .list_voltage = twlfixed_list_voltage,
675
676 .get_voltage = twlfixed_get_voltage,
677
678 .enable = twl6030reg_enable,
679 .disable = twl6030reg_disable,
680 .is_enabled = twl6030reg_is_enabled,
681 .enable_time = twl6030reg_enable_time,
682
683 .set_mode = twl6030reg_set_mode,
684
685 .get_status = twl6030reg_get_status,
686 };
687
688 static struct regulator_ops twl6030_fixed_resource = {
689 .enable = twl6030reg_enable,
690 .disable = twl6030reg_disable,
691 .is_enabled = twl6030reg_is_enabled,
692 .enable_time = twl6030reg_enable_time,
693 .get_status = twl6030reg_get_status,
694 };
695
696 /*
697 * SMPS status and control
698 */
699
700 static int twl6030smps_list_voltage(struct regulator_dev *rdev, unsigned index)
701 {
702 struct twlreg_info *info = rdev_get_drvdata(rdev);
703
704 int voltage = 0;
705
706 switch (info->flags) {
707 case SMPS_OFFSET_EN:
708 voltage = 100000;
709 /* fall through */
710 case 0:
711 switch (index) {
712 case 0:
713 voltage = 0;
714 break;
715 case 58:
716 voltage = 1350 * 1000;
717 break;
718 case 59:
719 voltage = 1500 * 1000;
720 break;
721 case 60:
722 voltage = 1800 * 1000;
723 break;
724 case 61:
725 voltage = 1900 * 1000;
726 break;
727 case 62:
728 voltage = 2100 * 1000;
729 break;
730 default:
731 voltage += (600000 + (12500 * (index - 1)));
732 }
733 break;
734 case SMPS_EXTENDED_EN:
735 switch (index) {
736 case 0:
737 voltage = 0;
738 break;
739 case 58:
740 voltage = 2084 * 1000;
741 break;
742 case 59:
743 voltage = 2315 * 1000;
744 break;
745 case 60:
746 voltage = 2778 * 1000;
747 break;
748 case 61:
749 voltage = 2932 * 1000;
750 break;
751 case 62:
752 voltage = 3241 * 1000;
753 break;
754 default:
755 voltage = (1852000 + (38600 * (index - 1)));
756 }
757 break;
758 case SMPS_OFFSET_EN | SMPS_EXTENDED_EN:
759 switch (index) {
760 case 0:
761 voltage = 0;
762 break;
763 case 58:
764 voltage = 4167 * 1000;
765 break;
766 case 59:
767 voltage = 2315 * 1000;
768 break;
769 case 60:
770 voltage = 2778 * 1000;
771 break;
772 case 61:
773 voltage = 2932 * 1000;
774 break;
775 case 62:
776 voltage = 3241 * 1000;
777 break;
778 default:
779 voltage = (2161000 + (38600 * (index - 1)));
780 }
781 break;
782 }
783
784 return voltage;
785 }
786
787 static int
788 twl6030smps_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV,
789 unsigned int *selector)
790 {
791 struct twlreg_info *info = rdev_get_drvdata(rdev);
792 int vsel = 0;
793
794 switch (info->flags) {
795 case 0:
796 if (min_uV == 0)
797 vsel = 0;
798 else if ((min_uV >= 600000) && (min_uV <= 1300000)) {
799 int calc_uV;
800 vsel = DIV_ROUND_UP(min_uV - 600000, 12500);
801 vsel++;
802 calc_uV = twl6030smps_list_voltage(rdev, vsel);
803 if (calc_uV > max_uV)
804 return -EINVAL;
805 }
806 /* Values 1..57 for vsel are linear and can be calculated
807 * values 58..62 are non linear.
808 */
809 else if ((min_uV > 1900000) && (max_uV >= 2100000))
810 vsel = 62;
811 else if ((min_uV > 1800000) && (max_uV >= 1900000))
812 vsel = 61;
813 else if ((min_uV > 1500000) && (max_uV >= 1800000))
814 vsel = 60;
815 else if ((min_uV > 1350000) && (max_uV >= 1500000))
816 vsel = 59;
817 else if ((min_uV > 1300000) && (max_uV >= 1350000))
818 vsel = 58;
819 else
820 return -EINVAL;
821 break;
822 case SMPS_OFFSET_EN:
823 if (min_uV == 0)
824 vsel = 0;
825 else if ((min_uV >= 700000) && (min_uV <= 1420000)) {
826 int calc_uV;
827 vsel = DIV_ROUND_UP(min_uV - 700000, 12500);
828 vsel++;
829 calc_uV = twl6030smps_list_voltage(rdev, vsel);
830 if (calc_uV > max_uV)
831 return -EINVAL;
832 }
833 /* Values 1..57 for vsel are linear and can be calculated
834 * values 58..62 are non linear.
835 */
836 else if ((min_uV > 1900000) && (max_uV >= 2100000))
837 vsel = 62;
838 else if ((min_uV > 1800000) && (max_uV >= 1900000))
839 vsel = 61;
840 else if ((min_uV > 1350000) && (max_uV >= 1800000))
841 vsel = 60;
842 else if ((min_uV > 1350000) && (max_uV >= 1500000))
843 vsel = 59;
844 else if ((min_uV > 1300000) && (max_uV >= 1350000))
845 vsel = 58;
846 else
847 return -EINVAL;
848 break;
849 case SMPS_EXTENDED_EN:
850 if (min_uV == 0) {
851 vsel = 0;
852 } else if ((min_uV >= 1852000) && (max_uV <= 4013600)) {
853 vsel = DIV_ROUND_UP(min_uV - 1852000, 38600);
854 vsel++;
855 }
856 break;
857 case SMPS_OFFSET_EN|SMPS_EXTENDED_EN:
858 if (min_uV == 0) {
859 vsel = 0;
860 } else if ((min_uV >= 2161000) && (max_uV <= 4321000)) {
861 vsel = DIV_ROUND_UP(min_uV - 2161000, 38600);
862 vsel++;
863 }
864 break;
865 }
866
867 *selector = vsel;
868
869 return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS,
870 vsel);
871 }
872
873 static int twl6030smps_get_voltage_sel(struct regulator_dev *rdev)
874 {
875 struct twlreg_info *info = rdev_get_drvdata(rdev);
876
877 return twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS);
878 }
879
880 static struct regulator_ops twlsmps_ops = {
881 .list_voltage = twl6030smps_list_voltage,
882
883 .set_voltage = twl6030smps_set_voltage,
884 .get_voltage_sel = twl6030smps_get_voltage_sel,
885
886 .enable = twl6030reg_enable,
887 .disable = twl6030reg_disable,
888 .is_enabled = twl6030reg_is_enabled,
889 .enable_time = twl6030reg_enable_time,
890
891 .set_mode = twl6030reg_set_mode,
892
893 .get_status = twl6030reg_get_status,
894 };
895
896 /*----------------------------------------------------------------------*/
897
898 #define TWL4030_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
899 remap_conf) \
900 TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
901 remap_conf, TWL4030, twl4030fixed_ops)
902 #define TWL6030_FIXED_LDO(label, offset, mVolts, turnon_delay) \
903 TWL_FIXED_LDO(label, offset, mVolts, 0x0, turnon_delay, \
904 0x0, TWL6030, twl6030fixed_ops)
905
906 #define TWL4030_ADJUSTABLE_LDO(label, offset, num, turnon_delay, remap_conf) \
907 static struct twlreg_info TWL4030_INFO_##label = { \
908 .base = offset, \
909 .id = num, \
910 .table_len = ARRAY_SIZE(label##_VSEL_table), \
911 .table = label##_VSEL_table, \
912 .delay = turnon_delay, \
913 .remap = remap_conf, \
914 .desc = { \
915 .name = #label, \
916 .id = TWL4030_REG_##label, \
917 .n_voltages = ARRAY_SIZE(label##_VSEL_table), \
918 .ops = &twl4030ldo_ops, \
919 .type = REGULATOR_VOLTAGE, \
920 .owner = THIS_MODULE, \
921 }, \
922 }
923
924 #define TWL4030_ADJUSTABLE_SMPS(label, offset, num, turnon_delay, remap_conf) \
925 static struct twlreg_info TWL4030_INFO_##label = { \
926 .base = offset, \
927 .id = num, \
928 .delay = turnon_delay, \
929 .remap = remap_conf, \
930 .desc = { \
931 .name = #label, \
932 .id = TWL4030_REG_##label, \
933 .ops = &twl4030smps_ops, \
934 .type = REGULATOR_VOLTAGE, \
935 .owner = THIS_MODULE, \
936 }, \
937 }
938
939 #define TWL6030_ADJUSTABLE_SMPS(label) \
940 static struct twlreg_info TWL6030_INFO_##label = { \
941 .desc = { \
942 .name = #label, \
943 .id = TWL6030_REG_##label, \
944 .ops = &twl6030coresmps_ops, \
945 .type = REGULATOR_VOLTAGE, \
946 .owner = THIS_MODULE, \
947 }, \
948 }
949
950 #define TWL6030_ADJUSTABLE_LDO(label, offset, min_mVolts, max_mVolts) \
951 static struct twlreg_info TWL6030_INFO_##label = { \
952 .base = offset, \
953 .min_mV = min_mVolts, \
954 .max_mV = max_mVolts, \
955 .desc = { \
956 .name = #label, \
957 .id = TWL6030_REG_##label, \
958 .n_voltages = (max_mVolts - min_mVolts)/100 + 1, \
959 .ops = &twl6030ldo_ops, \
960 .type = REGULATOR_VOLTAGE, \
961 .owner = THIS_MODULE, \
962 }, \
963 }
964
965 #define TWL6025_ADJUSTABLE_LDO(label, offset, min_mVolts, max_mVolts) \
966 static struct twlreg_info TWL6025_INFO_##label = { \
967 .base = offset, \
968 .min_mV = min_mVolts, \
969 .max_mV = max_mVolts, \
970 .desc = { \
971 .name = #label, \
972 .id = TWL6025_REG_##label, \
973 .n_voltages = ((max_mVolts - min_mVolts)/100) + 1, \
974 .ops = &twl6030ldo_ops, \
975 .type = REGULATOR_VOLTAGE, \
976 .owner = THIS_MODULE, \
977 }, \
978 }
979
980 #define TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, remap_conf, \
981 family, operations) \
982 static struct twlreg_info TWLFIXED_INFO_##label = { \
983 .base = offset, \
984 .id = num, \
985 .min_mV = mVolts, \
986 .delay = turnon_delay, \
987 .remap = remap_conf, \
988 .desc = { \
989 .name = #label, \
990 .id = family##_REG_##label, \
991 .n_voltages = 1, \
992 .ops = &operations, \
993 .type = REGULATOR_VOLTAGE, \
994 .owner = THIS_MODULE, \
995 }, \
996 }
997
998 #define TWL6030_FIXED_RESOURCE(label, offset, turnon_delay) \
999 static struct twlreg_info TWLRES_INFO_##label = { \
1000 .base = offset, \
1001 .delay = turnon_delay, \
1002 .desc = { \
1003 .name = #label, \
1004 .id = TWL6030_REG_##label, \
1005 .ops = &twl6030_fixed_resource, \
1006 .type = REGULATOR_VOLTAGE, \
1007 .owner = THIS_MODULE, \
1008 }, \
1009 }
1010
1011 #define TWL6025_ADJUSTABLE_SMPS(label, offset) \
1012 static struct twlreg_info TWLSMPS_INFO_##label = { \
1013 .base = offset, \
1014 .min_mV = 600, \
1015 .max_mV = 2100, \
1016 .desc = { \
1017 .name = #label, \
1018 .id = TWL6025_REG_##label, \
1019 .n_voltages = 63, \
1020 .ops = &twlsmps_ops, \
1021 .type = REGULATOR_VOLTAGE, \
1022 .owner = THIS_MODULE, \
1023 }, \
1024 }
1025
1026 /*
1027 * We list regulators here if systems need some level of
1028 * software control over them after boot.
1029 */
1030 TWL4030_ADJUSTABLE_LDO(VAUX1, 0x17, 1, 100, 0x08);
1031 TWL4030_ADJUSTABLE_LDO(VAUX2_4030, 0x1b, 2, 100, 0x08);
1032 TWL4030_ADJUSTABLE_LDO(VAUX2, 0x1b, 2, 100, 0x08);
1033 TWL4030_ADJUSTABLE_LDO(VAUX3, 0x1f, 3, 100, 0x08);
1034 TWL4030_ADJUSTABLE_LDO(VAUX4, 0x23, 4, 100, 0x08);
1035 TWL4030_ADJUSTABLE_LDO(VMMC1, 0x27, 5, 100, 0x08);
1036 TWL4030_ADJUSTABLE_LDO(VMMC2, 0x2b, 6, 100, 0x08);
1037 TWL4030_ADJUSTABLE_LDO(VPLL1, 0x2f, 7, 100, 0x00);
1038 TWL4030_ADJUSTABLE_LDO(VPLL2, 0x33, 8, 100, 0x08);
1039 TWL4030_ADJUSTABLE_LDO(VSIM, 0x37, 9, 100, 0x00);
1040 TWL4030_ADJUSTABLE_LDO(VDAC, 0x3b, 10, 100, 0x08);
1041 TWL4030_ADJUSTABLE_LDO(VINTANA2, 0x43, 12, 100, 0x08);
1042 TWL4030_ADJUSTABLE_LDO(VIO, 0x4b, 14, 1000, 0x08);
1043 TWL4030_ADJUSTABLE_SMPS(VDD1, 0x55, 15, 1000, 0x08);
1044 TWL4030_ADJUSTABLE_SMPS(VDD2, 0x63, 16, 1000, 0x08);
1045 /* VUSBCP is managed *only* by the USB subchip */
1046 /* 6030 REG with base as PMC Slave Misc : 0x0030 */
1047 /* Turnon-delay and remap configuration values for 6030 are not
1048 verified since the specification is not public */
1049 TWL6030_ADJUSTABLE_SMPS(VDD1);
1050 TWL6030_ADJUSTABLE_SMPS(VDD2);
1051 TWL6030_ADJUSTABLE_SMPS(VDD3);
1052 TWL6030_ADJUSTABLE_LDO(VAUX1_6030, 0x54, 1000, 3300);
1053 TWL6030_ADJUSTABLE_LDO(VAUX2_6030, 0x58, 1000, 3300);
1054 TWL6030_ADJUSTABLE_LDO(VAUX3_6030, 0x5c, 1000, 3300);
1055 TWL6030_ADJUSTABLE_LDO(VMMC, 0x68, 1000, 3300);
1056 TWL6030_ADJUSTABLE_LDO(VPP, 0x6c, 1000, 3300);
1057 TWL6030_ADJUSTABLE_LDO(VUSIM, 0x74, 1000, 3300);
1058 /* 6025 are renamed compared to 6030 versions */
1059 TWL6025_ADJUSTABLE_LDO(LDO2, 0x54, 1000, 3300);
1060 TWL6025_ADJUSTABLE_LDO(LDO4, 0x58, 1000, 3300);
1061 TWL6025_ADJUSTABLE_LDO(LDO3, 0x5c, 1000, 3300);
1062 TWL6025_ADJUSTABLE_LDO(LDO5, 0x68, 1000, 3300);
1063 TWL6025_ADJUSTABLE_LDO(LDO1, 0x6c, 1000, 3300);
1064 TWL6025_ADJUSTABLE_LDO(LDO7, 0x74, 1000, 3300);
1065 TWL6025_ADJUSTABLE_LDO(LDO6, 0x60, 1000, 3300);
1066 TWL6025_ADJUSTABLE_LDO(LDOLN, 0x64, 1000, 3300);
1067 TWL6025_ADJUSTABLE_LDO(LDOUSB, 0x70, 1000, 3300);
1068 TWL4030_FIXED_LDO(VINTANA2, 0x3f, 1500, 11, 100, 0x08);
1069 TWL4030_FIXED_LDO(VINTDIG, 0x47, 1500, 13, 100, 0x08);
1070 TWL4030_FIXED_LDO(VUSB1V5, 0x71, 1500, 17, 100, 0x08);
1071 TWL4030_FIXED_LDO(VUSB1V8, 0x74, 1800, 18, 100, 0x08);
1072 TWL4030_FIXED_LDO(VUSB3V1, 0x77, 3100, 19, 150, 0x08);
1073 TWL6030_FIXED_LDO(VANA, 0x50, 2100, 0);
1074 TWL6030_FIXED_LDO(VCXIO, 0x60, 1800, 0);
1075 TWL6030_FIXED_LDO(VDAC, 0x64, 1800, 0);
1076 TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 0);
1077 TWL6030_FIXED_LDO(V1V8, 0x16, 1800, 0);
1078 TWL6030_FIXED_LDO(V2V1, 0x1c, 2100, 0);
1079 TWL6030_FIXED_RESOURCE(CLK32KG, 0x8C, 0);
1080 TWL6025_ADJUSTABLE_SMPS(SMPS3, 0x34);
1081 TWL6025_ADJUSTABLE_SMPS(SMPS4, 0x10);
1082 TWL6025_ADJUSTABLE_SMPS(VIO, 0x16);
1083
1084 static u8 twl_get_smps_offset(void)
1085 {
1086 u8 value;
1087
1088 twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
1089 TWL6030_SMPS_OFFSET);
1090 return value;
1091 }
1092
1093 static u8 twl_get_smps_mult(void)
1094 {
1095 u8 value;
1096
1097 twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
1098 TWL6030_SMPS_MULT);
1099 return value;
1100 }
1101
1102 #define TWL_OF_MATCH(comp, family, label) \
1103 { \
1104 .compatible = comp, \
1105 .data = &family##_INFO_##label, \
1106 }
1107
1108 #define TWL4030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL4030, label)
1109 #define TWL6030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6030, label)
1110 #define TWL6025_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6025, label)
1111 #define TWLFIXED_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLFIXED, label)
1112 #define TWLRES_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLRES, label)
1113 #define TWLSMPS_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLSMPS, label)
1114
1115 static const struct of_device_id twl_of_match[] __devinitconst = {
1116 TWL4030_OF_MATCH("ti,twl4030-vaux1", VAUX1),
1117 TWL4030_OF_MATCH("ti,twl4030-vaux2", VAUX2_4030),
1118 TWL4030_OF_MATCH("ti,twl5030-vaux2", VAUX2),
1119 TWL4030_OF_MATCH("ti,twl4030-vaux3", VAUX3),
1120 TWL4030_OF_MATCH("ti,twl4030-vaux4", VAUX4),
1121 TWL4030_OF_MATCH("ti,twl4030-vmmc1", VMMC1),
1122 TWL4030_OF_MATCH("ti,twl4030-vmmc2", VMMC2),
1123 TWL4030_OF_MATCH("ti,twl4030-vpll1", VPLL1),
1124 TWL4030_OF_MATCH("ti,twl4030-vpll2", VPLL2),
1125 TWL4030_OF_MATCH("ti,twl4030-vsim", VSIM),
1126 TWL4030_OF_MATCH("ti,twl4030-vdac", VDAC),
1127 TWL4030_OF_MATCH("ti,twl4030-vintana2", VINTANA2),
1128 TWL4030_OF_MATCH("ti,twl4030-vio", VIO),
1129 TWL4030_OF_MATCH("ti,twl4030-vdd1", VDD1),
1130 TWL4030_OF_MATCH("ti,twl4030-vdd2", VDD2),
1131 TWL6030_OF_MATCH("ti,twl6030-vdd1", VDD1),
1132 TWL6030_OF_MATCH("ti,twl6030-vdd2", VDD2),
1133 TWL6030_OF_MATCH("ti,twl6030-vdd3", VDD3),
1134 TWL6030_OF_MATCH("ti,twl6030-vaux1", VAUX1_6030),
1135 TWL6030_OF_MATCH("ti,twl6030-vaux2", VAUX2_6030),
1136 TWL6030_OF_MATCH("ti,twl6030-vaux3", VAUX3_6030),
1137 TWL6030_OF_MATCH("ti,twl6030-vmmc", VMMC),
1138 TWL6030_OF_MATCH("ti,twl6030-vpp", VPP),
1139 TWL6030_OF_MATCH("ti,twl6030-vusim", VUSIM),
1140 TWL6025_OF_MATCH("ti,twl6025-ldo2", LDO2),
1141 TWL6025_OF_MATCH("ti,twl6025-ldo4", LDO4),
1142 TWL6025_OF_MATCH("ti,twl6025-ldo3", LDO3),
1143 TWL6025_OF_MATCH("ti,twl6025-ldo5", LDO5),
1144 TWL6025_OF_MATCH("ti,twl6025-ldo1", LDO1),
1145 TWL6025_OF_MATCH("ti,twl6025-ldo7", LDO7),
1146 TWL6025_OF_MATCH("ti,twl6025-ldo6", LDO6),
1147 TWL6025_OF_MATCH("ti,twl6025-ldoln", LDOLN),
1148 TWL6025_OF_MATCH("ti,twl6025-ldousb", LDOUSB),
1149 TWLFIXED_OF_MATCH("ti,twl4030-vintana2", VINTANA2),
1150 TWLFIXED_OF_MATCH("ti,twl4030-vintdig", VINTDIG),
1151 TWLFIXED_OF_MATCH("ti,twl4030-vusb1v5", VUSB1V5),
1152 TWLFIXED_OF_MATCH("ti,twl4030-vusb1v8", VUSB1V8),
1153 TWLFIXED_OF_MATCH("ti,twl4030-vusb3v1", VUSB3V1),
1154 TWLFIXED_OF_MATCH("ti,twl6030-vana", VANA),
1155 TWLFIXED_OF_MATCH("ti,twl6030-vcxio", VCXIO),
1156 TWLFIXED_OF_MATCH("ti,twl6030-vdac", VDAC),
1157 TWLFIXED_OF_MATCH("ti,twl6030-vusb", VUSB),
1158 TWLFIXED_OF_MATCH("ti,twl6030-v1v8", V1V8),
1159 TWLFIXED_OF_MATCH("ti,twl6030-v2v1", V2V1),
1160 TWLRES_OF_MATCH("ti,twl6030-clk32kg", CLK32KG),
1161 TWLSMPS_OF_MATCH("ti,twl6025-smps3", SMPS3),
1162 TWLSMPS_OF_MATCH("ti,twl6025-smps4", SMPS4),
1163 TWLSMPS_OF_MATCH("ti,twl6025-vio", VIO),
1164 {},
1165 };
1166 MODULE_DEVICE_TABLE(of, twl_of_match);
1167
1168 static int __devinit twlreg_probe(struct platform_device *pdev)
1169 {
1170 int i, id;
1171 struct twlreg_info *info;
1172 struct regulator_init_data *initdata;
1173 struct regulation_constraints *c;
1174 struct regulator_dev *rdev;
1175 struct twl_regulator_driver_data *drvdata;
1176 const struct of_device_id *match;
1177 struct regulator_config config = { };
1178
1179 match = of_match_device(twl_of_match, &pdev->dev);
1180 if (match) {
1181 info = match->data;
1182 id = info->desc.id;
1183 initdata = of_get_regulator_init_data(&pdev->dev,
1184 pdev->dev.of_node);
1185 drvdata = NULL;
1186 } else {
1187 id = pdev->id;
1188 initdata = pdev->dev.platform_data;
1189 for (i = 0, info = NULL; i < ARRAY_SIZE(twl_of_match); i++) {
1190 info = twl_of_match[i].data;
1191 if (info && info->desc.id == id)
1192 break;
1193 }
1194 if (i == ARRAY_SIZE(twl_of_match))
1195 return -ENODEV;
1196
1197 drvdata = initdata->driver_data;
1198 if (!drvdata)
1199 return -EINVAL;
1200 }
1201
1202 if (!info)
1203 return -ENODEV;
1204
1205 if (!initdata)
1206 return -EINVAL;
1207
1208 if (drvdata) {
1209 /* copy the driver data into regulator data */
1210 info->features = drvdata->features;
1211 info->data = drvdata->data;
1212 info->set_voltage = drvdata->set_voltage;
1213 info->get_voltage = drvdata->get_voltage;
1214 }
1215
1216 /* Constrain board-specific capabilities according to what
1217 * this driver and the chip itself can actually do.
1218 */
1219 c = &initdata->constraints;
1220 c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY;
1221 c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE
1222 | REGULATOR_CHANGE_MODE
1223 | REGULATOR_CHANGE_STATUS;
1224 switch (id) {
1225 case TWL4030_REG_VIO:
1226 case TWL4030_REG_VDD1:
1227 case TWL4030_REG_VDD2:
1228 case TWL4030_REG_VPLL1:
1229 case TWL4030_REG_VINTANA1:
1230 case TWL4030_REG_VINTANA2:
1231 case TWL4030_REG_VINTDIG:
1232 c->always_on = true;
1233 break;
1234 default:
1235 break;
1236 }
1237
1238 switch (id) {
1239 case TWL6025_REG_SMPS3:
1240 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS3)
1241 info->flags |= SMPS_EXTENDED_EN;
1242 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS3)
1243 info->flags |= SMPS_OFFSET_EN;
1244 break;
1245 case TWL6025_REG_SMPS4:
1246 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS4)
1247 info->flags |= SMPS_EXTENDED_EN;
1248 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS4)
1249 info->flags |= SMPS_OFFSET_EN;
1250 break;
1251 case TWL6025_REG_VIO:
1252 if (twl_get_smps_mult() & SMPS_MULTOFFSET_VIO)
1253 info->flags |= SMPS_EXTENDED_EN;
1254 if (twl_get_smps_offset() & SMPS_MULTOFFSET_VIO)
1255 info->flags |= SMPS_OFFSET_EN;
1256 break;
1257 }
1258
1259 config.dev = &pdev->dev;
1260 config.init_data = initdata;
1261 config.driver_data = info;
1262 config.of_node = pdev->dev.of_node;
1263
1264 rdev = regulator_register(&info->desc, &config);
1265 if (IS_ERR(rdev)) {
1266 dev_err(&pdev->dev, "can't register %s, %ld\n",
1267 info->desc.name, PTR_ERR(rdev));
1268 return PTR_ERR(rdev);
1269 }
1270 platform_set_drvdata(pdev, rdev);
1271
1272 if (twl_class_is_4030())
1273 twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_REMAP,
1274 info->remap);
1275
1276 /* NOTE: many regulators support short-circuit IRQs (presentable
1277 * as REGULATOR_OVER_CURRENT notifications?) configured via:
1278 * - SC_CONFIG
1279 * - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4)
1280 * - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2)
1281 * - IT_CONFIG
1282 */
1283
1284 return 0;
1285 }
1286
1287 static int __devexit twlreg_remove(struct platform_device *pdev)
1288 {
1289 regulator_unregister(platform_get_drvdata(pdev));
1290 return 0;
1291 }
1292
1293 MODULE_ALIAS("platform:twl_reg");
1294
1295 static struct platform_driver twlreg_driver = {
1296 .probe = twlreg_probe,
1297 .remove = __devexit_p(twlreg_remove),
1298 /* NOTE: short name, to work around driver model truncation of
1299 * "twl_regulator.12" (and friends) to "twl_regulator.1".
1300 */
1301 .driver = {
1302 .name = "twl_reg",
1303 .owner = THIS_MODULE,
1304 .of_match_table = of_match_ptr(twl_of_match),
1305 },
1306 };
1307
1308 static int __init twlreg_init(void)
1309 {
1310 return platform_driver_register(&twlreg_driver);
1311 }
1312 subsys_initcall(twlreg_init);
1313
1314 static void __exit twlreg_exit(void)
1315 {
1316 platform_driver_unregister(&twlreg_driver);
1317 }
1318 module_exit(twlreg_exit)
1319
1320 MODULE_DESCRIPTION("TWL regulator driver");
1321 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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