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Linux 3.4.102
[linux/fpc-iii.git] / drivers / regulator / twl-regulator.c
blob1eb7a1510937a0388bf43d124b53ca72c4067b93
1 /*
2 * twl-regulator.c -- support regulators in twl4030/twl6030 family chips
3 *
4 * Copyright (C) 2008 David Brownell
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 */
11
12 #include <linux/module.h>
13 #include <linux/init.h>
14 #include <linux/err.h>
15 #include <linux/delay.h>
16 #include <linux/platform_device.h>
17 #include <linux/of.h>
18 #include <linux/of_device.h>
19 #include <linux/regulator/driver.h>
20 #include <linux/regulator/machine.h>
21 #include <linux/regulator/of_regulator.h>
22 #include <linux/i2c/twl.h>
23
24
25 /*
26 * The TWL4030/TW5030/TPS659x0/TWL6030 family chips include power management, a
27 * USB OTG transceiver, an RTC, ADC, PWM, and lots more. Some versions
28 * include an audio codec, battery charger, and more voltage regulators.
29 * These chips are often used in OMAP-based systems.
30 *
31 * This driver implements software-based resource control for various
32 * voltage regulators. This is usually augmented with state machine
33 * based control.
34 */
35
36 struct twlreg_info {
37 /* start of regulator's PM_RECEIVER control register bank */
38 u8 base;
39
40 /* twl resource ID, for resource control state machine */
41 u8 id;
42
43 /* voltage in mV = table[VSEL]; table_len must be a power-of-two */
44 u8 table_len;
45 const u16 *table;
46
47 /* regulator specific turn-on delay */
48 u16 delay;
49
50 /* State REMAP default configuration */
51 u8 remap;
52
53 /* chip constraints on regulator behavior */
54 u16 min_mV;
55 u16 max_mV;
56
57 u8 flags;
58
59 /* used by regulator core */
60 struct regulator_desc desc;
61
62 /* chip specific features */
63 unsigned long features;
64
65 /*
66 * optional override functions for voltage set/get
67 * these are currently only used for SMPS regulators
68 */
69 int (*get_voltage)(void *data);
70 int (*set_voltage)(void *data, int target_uV);
71
72 /* data passed from board for external get/set voltage */
73 void *data;
74 };
75
76
77 /* LDO control registers ... offset is from the base of its register bank.
78 * The first three registers of all power resource banks help hardware to
79 * manage the various resource groups.
80 */
81 /* Common offset in TWL4030/6030 */
82 #define VREG_GRP 0
83 /* TWL4030 register offsets */
84 #define VREG_TYPE 1
85 #define VREG_REMAP 2
86 #define VREG_DEDICATED 3 /* LDO control */
87 #define VREG_VOLTAGE_SMPS_4030 9
88 /* TWL6030 register offsets */
89 #define VREG_TRANS 1
90 #define VREG_STATE 2
91 #define VREG_VOLTAGE 3
92 #define VREG_VOLTAGE_SMPS 4
93 /* TWL6030 Misc register offsets */
94 #define VREG_BC_ALL 1
95 #define VREG_BC_REF 2
96 #define VREG_BC_PROC 3
97 #define VREG_BC_CLK_RST 4
98
99 /* TWL6030 LDO register values for CFG_STATE */
100 #define TWL6030_CFG_STATE_OFF 0x00
101 #define TWL6030_CFG_STATE_ON 0x01
102 #define TWL6030_CFG_STATE_OFF2 0x02
103 #define TWL6030_CFG_STATE_SLEEP 0x03
104 #define TWL6030_CFG_STATE_GRP_SHIFT 5
105 #define TWL6030_CFG_STATE_APP_SHIFT 2
106 #define TWL6030_CFG_STATE_APP_MASK (0x03 << TWL6030_CFG_STATE_APP_SHIFT)
107 #define TWL6030_CFG_STATE_APP(v) (((v) & TWL6030_CFG_STATE_APP_MASK) >>\
108 TWL6030_CFG_STATE_APP_SHIFT)
109
110 /* Flags for SMPS Voltage reading */
111 #define SMPS_OFFSET_EN BIT(0)
112 #define SMPS_EXTENDED_EN BIT(1)
113
114 /* twl6025 SMPS EPROM values */
115 #define TWL6030_SMPS_OFFSET 0xB0
116 #define TWL6030_SMPS_MULT 0xB3
117 #define SMPS_MULTOFFSET_SMPS4 BIT(0)
118 #define SMPS_MULTOFFSET_VIO BIT(1)
119 #define SMPS_MULTOFFSET_SMPS3 BIT(6)
120
121 static inline int
122 twlreg_read(struct twlreg_info *info, unsigned slave_subgp, unsigned offset)
123 {
124 u8 value;
125 int status;
126
127 status = twl_i2c_read_u8(slave_subgp,
128 &value, info->base + offset);
129 return (status < 0) ? status : value;
130 }
131
132 static inline int
133 twlreg_write(struct twlreg_info *info, unsigned slave_subgp, unsigned offset,
134 u8 value)
135 {
136 return twl_i2c_write_u8(slave_subgp,
137 value, info->base + offset);
138 }
139
140 /*----------------------------------------------------------------------*/
141
142 /* generic power resource operations, which work on all regulators */
143
144 static int twlreg_grp(struct regulator_dev *rdev)
145 {
146 return twlreg_read(rdev_get_drvdata(rdev), TWL_MODULE_PM_RECEIVER,
147 VREG_GRP);
148 }
149
150 /*
151 * Enable/disable regulators by joining/leaving the P1 (processor) group.
152 * We assume nobody else is updating the DEV_GRP registers.
153 */
154 /* definition for 4030 family */
155 #define P3_GRP_4030 BIT(7) /* "peripherals" */
156 #define P2_GRP_4030 BIT(6) /* secondary processor, modem, etc */
157 #define P1_GRP_4030 BIT(5) /* CPU/Linux */
158 /* definition for 6030 family */
159 #define P3_GRP_6030 BIT(2) /* secondary processor, modem, etc */
160 #define P2_GRP_6030 BIT(1) /* "peripherals" */
161 #define P1_GRP_6030 BIT(0) /* CPU/Linux */
162
163 static int twl4030reg_is_enabled(struct regulator_dev *rdev)
164 {
165 int state = twlreg_grp(rdev);
166
167 if (state < 0)
168 return state;
169
170 return state & P1_GRP_4030;
171 }
172
173 static int twl6030reg_is_enabled(struct regulator_dev *rdev)
174 {
175 struct twlreg_info *info = rdev_get_drvdata(rdev);
176 int grp = 0, val;
177
178 if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS)))
179 grp = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_GRP);
180 if (grp < 0)
181 return grp;
182
183 if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS)))
184 grp &= P1_GRP_6030;
185 else
186 grp = 1;
187
188 val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
189 val = TWL6030_CFG_STATE_APP(val);
190
191 return grp && (val == TWL6030_CFG_STATE_ON);
192 }
193
194 static int twl4030reg_enable(struct regulator_dev *rdev)
195 {
196 struct twlreg_info *info = rdev_get_drvdata(rdev);
197 int grp;
198 int ret;
199
200 grp = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_GRP);
201 if (grp < 0)
202 return grp;
203
204 grp |= P1_GRP_4030;
205
206 ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp);
207
208 udelay(info->delay);
209
210 return ret;
211 }
212
213 static int twl6030reg_enable(struct regulator_dev *rdev)
214 {
215 struct twlreg_info *info = rdev_get_drvdata(rdev);
216 int grp = 0;
217 int ret;
218
219 if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS)))
220 grp = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_GRP);
221 if (grp < 0)
222 return grp;
223
224 ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
225 grp << TWL6030_CFG_STATE_GRP_SHIFT |
226 TWL6030_CFG_STATE_ON);
227
228 udelay(info->delay);
229
230 return ret;
231 }
232
233 static int twl4030reg_disable(struct regulator_dev *rdev)
234 {
235 struct twlreg_info *info = rdev_get_drvdata(rdev);
236 int grp;
237 int ret;
238
239 grp = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_GRP);
240 if (grp < 0)
241 return grp;
242
243 grp &= ~(P1_GRP_4030 | P2_GRP_4030 | P3_GRP_4030);
244
245 ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp);
246
247 return ret;
248 }
249
250 static int twl6030reg_disable(struct regulator_dev *rdev)
251 {
252 struct twlreg_info *info = rdev_get_drvdata(rdev);
253 int grp = 0;
254 int ret;
255
256 if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS)))
257 grp = P1_GRP_6030 | P2_GRP_6030 | P3_GRP_6030;
258
259 /* For 6030, set the off state for all grps enabled */
260 ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
261 (grp) << TWL6030_CFG_STATE_GRP_SHIFT |
262 TWL6030_CFG_STATE_OFF);
263
264 return ret;
265 }
266
267 static int twl4030reg_get_status(struct regulator_dev *rdev)
268 {
269 int state = twlreg_grp(rdev);
270
271 if (state < 0)
272 return state;
273 state &= 0x0f;
274
275 /* assume state != WARM_RESET; we'd not be running... */
276 if (!state)
277 return REGULATOR_STATUS_OFF;
278 return (state & BIT(3))
279 ? REGULATOR_STATUS_NORMAL
280 : REGULATOR_STATUS_STANDBY;
281 }
282
283 static int twl6030reg_get_status(struct regulator_dev *rdev)
284 {
285 struct twlreg_info *info = rdev_get_drvdata(rdev);
286 int val;
287
288 val = twlreg_grp(rdev);
289 if (val < 0)
290 return val;
291
292 val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
293
294 switch (TWL6030_CFG_STATE_APP(val)) {
295 case TWL6030_CFG_STATE_ON:
296 return REGULATOR_STATUS_NORMAL;
297
298 case TWL6030_CFG_STATE_SLEEP:
299 return REGULATOR_STATUS_STANDBY;
300
301 case TWL6030_CFG_STATE_OFF:
302 case TWL6030_CFG_STATE_OFF2:
303 default:
304 break;
305 }
306
307 return REGULATOR_STATUS_OFF;
308 }
309
310 static int twl4030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
311 {
312 struct twlreg_info *info = rdev_get_drvdata(rdev);
313 unsigned message;
314 int status;
315
316 /* We can only set the mode through state machine commands... */
317 switch (mode) {
318 case REGULATOR_MODE_NORMAL:
319 message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_ACTIVE);
320 break;
321 case REGULATOR_MODE_STANDBY:
322 message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_SLEEP);
323 break;
324 default:
325 return -EINVAL;
326 }
327
328 /* Ensure the resource is associated with some group */
329 status = twlreg_grp(rdev);
330 if (status < 0)
331 return status;
332 if (!(status & (P3_GRP_4030 | P2_GRP_4030 | P1_GRP_4030)))
333 return -EACCES;
334
335 status = twl_i2c_write_u8(TWL_MODULE_PM_MASTER,
336 message >> 8, TWL4030_PM_MASTER_PB_WORD_MSB);
337 if (status < 0)
338 return status;
339
340 return twl_i2c_write_u8(TWL_MODULE_PM_MASTER,
341 message & 0xff, TWL4030_PM_MASTER_PB_WORD_LSB);
342 }
343
344 static int twl6030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
345 {
346 struct twlreg_info *info = rdev_get_drvdata(rdev);
347 int grp = 0;
348 int val;
349
350 if (!(twl_class_is_6030() && (info->features & TWL6025_SUBCLASS)))
351 grp = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_GRP);
352
353 if (grp < 0)
354 return grp;
355
356 /* Compose the state register settings */
357 val = grp << TWL6030_CFG_STATE_GRP_SHIFT;
358 /* We can only set the mode through state machine commands... */
359 switch (mode) {
360 case REGULATOR_MODE_NORMAL:
361 val |= TWL6030_CFG_STATE_ON;
362 break;
363 case REGULATOR_MODE_STANDBY:
364 val |= TWL6030_CFG_STATE_SLEEP;
365 break;
366
367 default:
368 return -EINVAL;
369 }
370
371 return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, val);
372 }
373
374 /*----------------------------------------------------------------------*/
375
376 /*
377 * Support for adjustable-voltage LDOs uses a four bit (or less) voltage
378 * select field in its control register. We use tables indexed by VSEL
379 * to record voltages in milliVolts. (Accuracy is about three percent.)
380 *
381 * Note that VSEL values for VAUX2 changed in twl5030 and newer silicon;
382 * currently handled by listing two slightly different VAUX2 regulators,
383 * only one of which will be configured.
384 *
385 * VSEL values documented as "TI cannot support these values" are flagged
386 * in these tables as UNSUP() values; we normally won't assign them.
387 *
388 * VAUX3 at 3V is incorrectly listed in some TI manuals as unsupported.
389 * TI are revising the twl5030/tps659x0 specs to support that 3.0V setting.
390 */
391 #ifdef CONFIG_TWL4030_ALLOW_UNSUPPORTED
392 #define UNSUP_MASK 0x0000
393 #else
394 #define UNSUP_MASK 0x8000
395 #endif
396
397 #define UNSUP(x) (UNSUP_MASK | (x))
398 #define IS_UNSUP(x) (UNSUP_MASK & (x))
399 #define LDO_MV(x) (~UNSUP_MASK & (x))
400
401
402 static const u16 VAUX1_VSEL_table[] = {
403 UNSUP(1500), UNSUP(1800), 2500, 2800,
404 3000, 3000, 3000, 3000,
405 };
406 static const u16 VAUX2_4030_VSEL_table[] = {
407 UNSUP(1000), UNSUP(1000), UNSUP(1200), 1300,
408 1500, 1800, UNSUP(1850), 2500,
409 UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000),
410 UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
411 };
412 static const u16 VAUX2_VSEL_table[] = {
413 1700, 1700, 1900, 1300,
414 1500, 1800, 2000, 2500,
415 2100, 2800, 2200, 2300,
416 2400, 2400, 2400, 2400,
417 };
418 static const u16 VAUX3_VSEL_table[] = {
419 1500, 1800, 2500, 2800,
420 3000, 3000, 3000, 3000,
421 };
422 static const u16 VAUX4_VSEL_table[] = {
423 700, 1000, 1200, UNSUP(1300),
424 1500, 1800, UNSUP(1850), 2500,
425 UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000),
426 UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
427 };
428 static const u16 VMMC1_VSEL_table[] = {
429 1850, 2850, 3000, 3150,
430 };
431 static const u16 VMMC2_VSEL_table[] = {
432 UNSUP(1000), UNSUP(1000), UNSUP(1200), UNSUP(1300),
433 UNSUP(1500), UNSUP(1800), 1850, UNSUP(2500),
434 2600, 2800, 2850, 3000,
435 3150, 3150, 3150, 3150,
436 };
437 static const u16 VPLL1_VSEL_table[] = {
438 1000, 1200, 1300, 1800,
439 UNSUP(2800), UNSUP(3000), UNSUP(3000), UNSUP(3000),
440 };
441 static const u16 VPLL2_VSEL_table[] = {
442 700, 1000, 1200, 1300,
443 UNSUP(1500), 1800, UNSUP(1850), UNSUP(2500),
444 UNSUP(2600), UNSUP(2800), UNSUP(2850), UNSUP(3000),
445 UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
446 };
447 static const u16 VSIM_VSEL_table[] = {
448 UNSUP(1000), UNSUP(1200), UNSUP(1300), 1800,
449 2800, 3000, 3000, 3000,
450 };
451 static const u16 VDAC_VSEL_table[] = {
452 1200, 1300, 1800, 1800,
453 };
454 static const u16 VDD1_VSEL_table[] = {
455 800, 1450,
456 };
457 static const u16 VDD2_VSEL_table[] = {
458 800, 1450, 1500,
459 };
460 static const u16 VIO_VSEL_table[] = {
461 1800, 1850,
462 };
463 static const u16 VINTANA2_VSEL_table[] = {
464 2500, 2750,
465 };
466
467 static int twl4030ldo_list_voltage(struct regulator_dev *rdev, unsigned index)
468 {
469 struct twlreg_info *info = rdev_get_drvdata(rdev);
470 int mV = info->table[index];
471
472 return IS_UNSUP(mV) ? 0 : (LDO_MV(mV) * 1000);
473 }
474
475 static int
476 twl4030ldo_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV,
477 unsigned *selector)
478 {
479 struct twlreg_info *info = rdev_get_drvdata(rdev);
480 int vsel;
481
482 for (vsel = 0; vsel < info->table_len; vsel++) {
483 int mV = info->table[vsel];
484 int uV;
485
486 if (IS_UNSUP(mV))
487 continue;
488 uV = LDO_MV(mV) * 1000;
489
490 /* REVISIT for VAUX2, first match may not be best/lowest */
491
492 /* use the first in-range value */
493 if (min_uV <= uV && uV <= max_uV) {
494 *selector = vsel;
495 return twlreg_write(info, TWL_MODULE_PM_RECEIVER,
496 VREG_VOLTAGE, vsel);
497 }
498 }
499
500 return -EDOM;
501 }
502
503 static int twl4030ldo_get_voltage(struct regulator_dev *rdev)
504 {
505 struct twlreg_info *info = rdev_get_drvdata(rdev);
506 int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER,
507 VREG_VOLTAGE);
508
509 if (vsel < 0)
510 return vsel;
511
512 vsel &= info->table_len - 1;
513 return LDO_MV(info->table[vsel]) * 1000;
514 }
515
516 static struct regulator_ops twl4030ldo_ops = {
517 .list_voltage = twl4030ldo_list_voltage,
518
519 .set_voltage = twl4030ldo_set_voltage,
520 .get_voltage = twl4030ldo_get_voltage,
521
522 .enable = twl4030reg_enable,
523 .disable = twl4030reg_disable,
524 .is_enabled = twl4030reg_is_enabled,
525
526 .set_mode = twl4030reg_set_mode,
527
528 .get_status = twl4030reg_get_status,
529 };
530
531 static int
532 twl4030smps_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV,
533 unsigned *selector)
534 {
535 struct twlreg_info *info = rdev_get_drvdata(rdev);
536 int vsel = DIV_ROUND_UP(min_uV - 600000, 12500);
537
538 if (info->set_voltage) {
539 return info->set_voltage(info->data, min_uV);
540 } else {
541 twlreg_write(info, TWL_MODULE_PM_RECEIVER,
542 VREG_VOLTAGE_SMPS_4030, vsel);
543 }
544
545 return 0;
546 }
547
548 static int twl4030smps_get_voltage(struct regulator_dev *rdev)
549 {
550 struct twlreg_info *info = rdev_get_drvdata(rdev);
551 int vsel;
552
553 if (info->get_voltage)
554 return info->get_voltage(info->data);
555
556 vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER,
557 VREG_VOLTAGE_SMPS_4030);
558
559 return vsel * 12500 + 600000;
560 }
561
562 static struct regulator_ops twl4030smps_ops = {
563 .set_voltage = twl4030smps_set_voltage,
564 .get_voltage = twl4030smps_get_voltage,
565 };
566
567 static int twl6030coresmps_set_voltage(struct regulator_dev *rdev, int min_uV,
568 int max_uV, unsigned *selector)
569 {
570 struct twlreg_info *info = rdev_get_drvdata(rdev);
571
572 if (info->set_voltage)
573 return info->set_voltage(info->data, min_uV);
574
575 return -ENODEV;
576 }
577
578 static int twl6030coresmps_get_voltage(struct regulator_dev *rdev)
579 {
580 struct twlreg_info *info = rdev_get_drvdata(rdev);
581
582 if (info->get_voltage)
583 return info->get_voltage(info->data);
584
585 return -ENODEV;
586 }
587
588 static struct regulator_ops twl6030coresmps_ops = {
589 .set_voltage = twl6030coresmps_set_voltage,
590 .get_voltage = twl6030coresmps_get_voltage,
591 };
592
593 static int twl6030ldo_list_voltage(struct regulator_dev *rdev, unsigned index)
594 {
595 struct twlreg_info *info = rdev_get_drvdata(rdev);
596
597 return ((info->min_mV + (index * 100)) * 1000);
598 }
599
600 static int
601 twl6030ldo_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV,
602 unsigned *selector)
603 {
604 struct twlreg_info *info = rdev_get_drvdata(rdev);
605 int vsel;
606
607 if ((min_uV/1000 < info->min_mV) || (max_uV/1000 > info->max_mV))
608 return -EDOM;
609
610 /*
611 * Use the below formula to calculate vsel
612 * mV = 1000mv + 100mv * (vsel - 1)
613 */
614 vsel = (min_uV/1000 - 1000)/100 + 1;
615 *selector = vsel;
616 return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE, vsel);
617
618 }
619
620 static int twl6030ldo_get_voltage(struct regulator_dev *rdev)
621 {
622 struct twlreg_info *info = rdev_get_drvdata(rdev);
623 int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER,
624 VREG_VOLTAGE);
625
626 if (vsel < 0)
627 return vsel;
628
629 /*
630 * Use the below formula to calculate vsel
631 * mV = 1000mv + 100mv * (vsel - 1)
632 */
633 return (1000 + (100 * (vsel - 1))) * 1000;
634 }
635
636 static struct regulator_ops twl6030ldo_ops = {
637 .list_voltage = twl6030ldo_list_voltage,
638
639 .set_voltage = twl6030ldo_set_voltage,
640 .get_voltage = twl6030ldo_get_voltage,
641
642 .enable = twl6030reg_enable,
643 .disable = twl6030reg_disable,
644 .is_enabled = twl6030reg_is_enabled,
645
646 .set_mode = twl6030reg_set_mode,
647
648 .get_status = twl6030reg_get_status,
649 };
650
651 /*----------------------------------------------------------------------*/
652
653 /*
654 * Fixed voltage LDOs don't have a VSEL field to update.
655 */
656 static int twlfixed_list_voltage(struct regulator_dev *rdev, unsigned index)
657 {
658 struct twlreg_info *info = rdev_get_drvdata(rdev);
659
660 return info->min_mV * 1000;
661 }
662
663 static int twlfixed_get_voltage(struct regulator_dev *rdev)
664 {
665 struct twlreg_info *info = rdev_get_drvdata(rdev);
666
667 return info->min_mV * 1000;
668 }
669
670 static struct regulator_ops twl4030fixed_ops = {
671 .list_voltage = twlfixed_list_voltage,
672
673 .get_voltage = twlfixed_get_voltage,
674
675 .enable = twl4030reg_enable,
676 .disable = twl4030reg_disable,
677 .is_enabled = twl4030reg_is_enabled,
678
679 .set_mode = twl4030reg_set_mode,
680
681 .get_status = twl4030reg_get_status,
682 };
683
684 static struct regulator_ops twl6030fixed_ops = {
685 .list_voltage = twlfixed_list_voltage,
686
687 .get_voltage = twlfixed_get_voltage,
688
689 .enable = twl6030reg_enable,
690 .disable = twl6030reg_disable,
691 .is_enabled = twl6030reg_is_enabled,
692
693 .set_mode = twl6030reg_set_mode,
694
695 .get_status = twl6030reg_get_status,
696 };
697
698 static struct regulator_ops twl6030_fixed_resource = {
699 .enable = twl6030reg_enable,
700 .disable = twl6030reg_disable,
701 .is_enabled = twl6030reg_is_enabled,
702 .get_status = twl6030reg_get_status,
703 };
704
705 /*
706 * SMPS status and control
707 */
708
709 static int twl6030smps_list_voltage(struct regulator_dev *rdev, unsigned index)
710 {
711 struct twlreg_info *info = rdev_get_drvdata(rdev);
712
713 int voltage = 0;
714
715 switch (info->flags) {
716 case SMPS_OFFSET_EN:
717 voltage = 100000;
718 /* fall through */
719 case 0:
720 switch (index) {
721 case 0:
722 voltage = 0;
723 break;
724 case 58:
725 voltage = 1350 * 1000;
726 break;
727 case 59:
728 voltage = 1500 * 1000;
729 break;
730 case 60:
731 voltage = 1800 * 1000;
732 break;
733 case 61:
734 voltage = 1900 * 1000;
735 break;
736 case 62:
737 voltage = 2100 * 1000;
738 break;
739 default:
740 voltage += (600000 + (12500 * (index - 1)));
741 }
742 break;
743 case SMPS_EXTENDED_EN:
744 switch (index) {
745 case 0:
746 voltage = 0;
747 break;
748 case 58:
749 voltage = 2084 * 1000;
750 break;
751 case 59:
752 voltage = 2315 * 1000;
753 break;
754 case 60:
755 voltage = 2778 * 1000;
756 break;
757 case 61:
758 voltage = 2932 * 1000;
759 break;
760 case 62:
761 voltage = 3241 * 1000;
762 break;
763 default:
764 voltage = (1852000 + (38600 * (index - 1)));
765 }
766 break;
767 case SMPS_OFFSET_EN | SMPS_EXTENDED_EN:
768 switch (index) {
769 case 0:
770 voltage = 0;
771 break;
772 case 58:
773 voltage = 4167 * 1000;
774 break;
775 case 59:
776 voltage = 2315 * 1000;
777 break;
778 case 60:
779 voltage = 2778 * 1000;
780 break;
781 case 61:
782 voltage = 2932 * 1000;
783 break;
784 case 62:
785 voltage = 3241 * 1000;
786 break;
787 default:
788 voltage = (2161000 + (38600 * (index - 1)));
789 }
790 break;
791 }
792
793 return voltage;
794 }
795
796 static int
797 twl6030smps_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV,
798 unsigned int *selector)
799 {
800 struct twlreg_info *info = rdev_get_drvdata(rdev);
801 int vsel = 0;
802
803 switch (info->flags) {
804 case 0:
805 if (min_uV == 0)
806 vsel = 0;
807 else if ((min_uV >= 600000) && (min_uV <= 1300000)) {
808 int calc_uV;
809 vsel = (min_uV - 600000) / 125;
810 if (vsel % 100)
811 vsel += 100;
812 vsel /= 100;
813 vsel++;
814 calc_uV = twl6030smps_list_voltage(rdev, vsel);
815 if (calc_uV > max_uV)
816 return -EINVAL;
817 }
818 /* Values 1..57 for vsel are linear and can be calculated
819 * values 58..62 are non linear.
820 */
821 else if ((min_uV > 1900000) && (max_uV >= 2100000))
822 vsel = 62;
823 else if ((min_uV > 1800000) && (max_uV >= 1900000))
824 vsel = 61;
825 else if ((min_uV > 1500000) && (max_uV >= 1800000))
826 vsel = 60;
827 else if ((min_uV > 1350000) && (max_uV >= 1500000))
828 vsel = 59;
829 else if ((min_uV > 1300000) && (max_uV >= 1350000))
830 vsel = 58;
831 else
832 return -EINVAL;
833 break;
834 case SMPS_OFFSET_EN:
835 if (min_uV == 0)
836 vsel = 0;
837 else if ((min_uV >= 700000) && (min_uV <= 1420000)) {
838 int calc_uV;
839 vsel = (min_uV - 700000) / 125;
840 if (vsel % 100)
841 vsel += 100;
842 vsel /= 100;
843 vsel++;
844 calc_uV = twl6030smps_list_voltage(rdev, vsel);
845 if (calc_uV > max_uV)
846 return -EINVAL;
847 }
848 /* Values 1..57 for vsel are linear and can be calculated
849 * values 58..62 are non linear.
850 */
851 else if ((min_uV > 1900000) && (max_uV >= 2100000))
852 vsel = 62;
853 else if ((min_uV > 1800000) && (max_uV >= 1900000))
854 vsel = 61;
855 else if ((min_uV > 1350000) && (max_uV >= 1800000))
856 vsel = 60;
857 else if ((min_uV > 1350000) && (max_uV >= 1500000))
858 vsel = 59;
859 else if ((min_uV > 1300000) && (max_uV >= 1350000))
860 vsel = 58;
861 else
862 return -EINVAL;
863 break;
864 case SMPS_EXTENDED_EN:
865 if (min_uV == 0)
866 vsel = 0;
867 else if ((min_uV >= 1852000) && (max_uV <= 4013600)) {
868 vsel = (min_uV - 1852000) / 386;
869 if (vsel % 100)
870 vsel += 100;
871 vsel /= 100;
872 vsel++;
873 }
874 break;
875 case SMPS_OFFSET_EN|SMPS_EXTENDED_EN:
876 if (min_uV == 0)
877 vsel = 0;
878 else if ((min_uV >= 2161000) && (max_uV <= 4321000)) {
879 vsel = (min_uV - 2161000) / 386;
880 if (vsel % 100)
881 vsel += 100;
882 vsel /= 100;
883 vsel++;
884 }
885 break;
886 }
887
888 *selector = vsel;
889
890 return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS,
891 vsel);
892 }
893
894 static int twl6030smps_get_voltage_sel(struct regulator_dev *rdev)
895 {
896 struct twlreg_info *info = rdev_get_drvdata(rdev);
897
898 return twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS);
899 }
900
901 static struct regulator_ops twlsmps_ops = {
902 .list_voltage = twl6030smps_list_voltage,
903
904 .set_voltage = twl6030smps_set_voltage,
905 .get_voltage_sel = twl6030smps_get_voltage_sel,
906
907 .enable = twl6030reg_enable,
908 .disable = twl6030reg_disable,
909 .is_enabled = twl6030reg_is_enabled,
910
911 .set_mode = twl6030reg_set_mode,
912
913 .get_status = twl6030reg_get_status,
914 };
915
916 /*----------------------------------------------------------------------*/
917
918 #define TWL4030_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
919 remap_conf) \
920 TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
921 remap_conf, TWL4030, twl4030fixed_ops)
922 #define TWL6030_FIXED_LDO(label, offset, mVolts, turnon_delay) \
923 TWL_FIXED_LDO(label, offset, mVolts, 0x0, turnon_delay, \
924 0x0, TWL6030, twl6030fixed_ops)
925
926 #define TWL4030_ADJUSTABLE_LDO(label, offset, num, turnon_delay, remap_conf) \
927 static struct twlreg_info TWL4030_INFO_##label = { \
928 .base = offset, \
929 .id = num, \
930 .table_len = ARRAY_SIZE(label##_VSEL_table), \
931 .table = label##_VSEL_table, \
932 .delay = turnon_delay, \
933 .remap = remap_conf, \
934 .desc = { \
935 .name = #label, \
936 .id = TWL4030_REG_##label, \
937 .n_voltages = ARRAY_SIZE(label##_VSEL_table), \
938 .ops = &twl4030ldo_ops, \
939 .type = REGULATOR_VOLTAGE, \
940 .owner = THIS_MODULE, \
941 }, \
942 }
943
944 #define TWL4030_ADJUSTABLE_SMPS(label, offset, num, turnon_delay, remap_conf) \
945 static struct twlreg_info TWL4030_INFO_##label = { \
946 .base = offset, \
947 .id = num, \
948 .delay = turnon_delay, \
949 .remap = remap_conf, \
950 .desc = { \
951 .name = #label, \
952 .id = TWL4030_REG_##label, \
953 .ops = &twl4030smps_ops, \
954 .type = REGULATOR_VOLTAGE, \
955 .owner = THIS_MODULE, \
956 }, \
957 }
958
959 #define TWL6030_ADJUSTABLE_SMPS(label) \
960 static struct twlreg_info TWL6030_INFO_##label = { \
961 .desc = { \
962 .name = #label, \
963 .id = TWL6030_REG_##label, \
964 .ops = &twl6030coresmps_ops, \
965 .type = REGULATOR_VOLTAGE, \
966 .owner = THIS_MODULE, \
967 }, \
968 }
969
970 #define TWL6030_ADJUSTABLE_LDO(label, offset, min_mVolts, max_mVolts) \
971 static struct twlreg_info TWL6030_INFO_##label = { \
972 .base = offset, \
973 .min_mV = min_mVolts, \
974 .max_mV = max_mVolts, \
975 .desc = { \
976 .name = #label, \
977 .id = TWL6030_REG_##label, \
978 .n_voltages = (max_mVolts - min_mVolts)/100 + 1, \
979 .ops = &twl6030ldo_ops, \
980 .type = REGULATOR_VOLTAGE, \
981 .owner = THIS_MODULE, \
982 }, \
983 }
984
985 #define TWL6025_ADJUSTABLE_LDO(label, offset, min_mVolts, max_mVolts) \
986 static struct twlreg_info TWL6025_INFO_##label = { \
987 .base = offset, \
988 .min_mV = min_mVolts, \
989 .max_mV = max_mVolts, \
990 .desc = { \
991 .name = #label, \
992 .id = TWL6025_REG_##label, \
993 .n_voltages = ((max_mVolts - min_mVolts)/100) + 1, \
994 .ops = &twl6030ldo_ops, \
995 .type = REGULATOR_VOLTAGE, \
996 .owner = THIS_MODULE, \
997 }, \
998 }
999
1000 #define TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, remap_conf, \
1001 family, operations) \
1002 static struct twlreg_info TWLFIXED_INFO_##label = { \
1003 .base = offset, \
1004 .id = num, \
1005 .min_mV = mVolts, \
1006 .delay = turnon_delay, \
1007 .remap = remap_conf, \
1008 .desc = { \
1009 .name = #label, \
1010 .id = family##_REG_##label, \
1011 .n_voltages = 1, \
1012 .ops = &operations, \
1013 .type = REGULATOR_VOLTAGE, \
1014 .owner = THIS_MODULE, \
1015 }, \
1016 }
1017
1018 #define TWL6030_FIXED_RESOURCE(label, offset, turnon_delay) \
1019 static struct twlreg_info TWLRES_INFO_##label = { \
1020 .base = offset, \
1021 .delay = turnon_delay, \
1022 .desc = { \
1023 .name = #label, \
1024 .id = TWL6030_REG_##label, \
1025 .ops = &twl6030_fixed_resource, \
1026 .type = REGULATOR_VOLTAGE, \
1027 .owner = THIS_MODULE, \
1028 }, \
1029 }
1030
1031 #define TWL6025_ADJUSTABLE_SMPS(label, offset) \
1032 static struct twlreg_info TWLSMPS_INFO_##label = { \
1033 .base = offset, \
1034 .min_mV = 600, \
1035 .max_mV = 2100, \
1036 .desc = { \
1037 .name = #label, \
1038 .id = TWL6025_REG_##label, \
1039 .n_voltages = 63, \
1040 .ops = &twlsmps_ops, \
1041 .type = REGULATOR_VOLTAGE, \
1042 .owner = THIS_MODULE, \
1043 }, \
1044 }
1045
1046 /*
1047 * We list regulators here if systems need some level of
1048 * software control over them after boot.
1049 */
1050 TWL4030_ADJUSTABLE_LDO(VAUX1, 0x17, 1, 100, 0x08);
1051 TWL4030_ADJUSTABLE_LDO(VAUX2_4030, 0x1b, 2, 100, 0x08);
1052 TWL4030_ADJUSTABLE_LDO(VAUX2, 0x1b, 2, 100, 0x08);
1053 TWL4030_ADJUSTABLE_LDO(VAUX3, 0x1f, 3, 100, 0x08);
1054 TWL4030_ADJUSTABLE_LDO(VAUX4, 0x23, 4, 100, 0x08);
1055 TWL4030_ADJUSTABLE_LDO(VMMC1, 0x27, 5, 100, 0x08);
1056 TWL4030_ADJUSTABLE_LDO(VMMC2, 0x2b, 6, 100, 0x08);
1057 TWL4030_ADJUSTABLE_LDO(VPLL1, 0x2f, 7, 100, 0x00);
1058 TWL4030_ADJUSTABLE_LDO(VPLL2, 0x33, 8, 100, 0x08);
1059 TWL4030_ADJUSTABLE_LDO(VSIM, 0x37, 9, 100, 0x00);
1060 TWL4030_ADJUSTABLE_LDO(VDAC, 0x3b, 10, 100, 0x08);
1061 TWL4030_ADJUSTABLE_LDO(VINTANA2, 0x43, 12, 100, 0x08);
1062 TWL4030_ADJUSTABLE_LDO(VIO, 0x4b, 14, 1000, 0x08);
1063 TWL4030_ADJUSTABLE_SMPS(VDD1, 0x55, 15, 1000, 0x08);
1064 TWL4030_ADJUSTABLE_SMPS(VDD2, 0x63, 16, 1000, 0x08);
1065 /* VUSBCP is managed *only* by the USB subchip */
1066 /* 6030 REG with base as PMC Slave Misc : 0x0030 */
1067 /* Turnon-delay and remap configuration values for 6030 are not
1068 verified since the specification is not public */
1069 TWL6030_ADJUSTABLE_SMPS(VDD1);
1070 TWL6030_ADJUSTABLE_SMPS(VDD2);
1071 TWL6030_ADJUSTABLE_SMPS(VDD3);
1072 TWL6030_ADJUSTABLE_LDO(VAUX1_6030, 0x54, 1000, 3300);
1073 TWL6030_ADJUSTABLE_LDO(VAUX2_6030, 0x58, 1000, 3300);
1074 TWL6030_ADJUSTABLE_LDO(VAUX3_6030, 0x5c, 1000, 3300);
1075 TWL6030_ADJUSTABLE_LDO(VMMC, 0x68, 1000, 3300);
1076 TWL6030_ADJUSTABLE_LDO(VPP, 0x6c, 1000, 3300);
1077 TWL6030_ADJUSTABLE_LDO(VUSIM, 0x74, 1000, 3300);
1078 /* 6025 are renamed compared to 6030 versions */
1079 TWL6025_ADJUSTABLE_LDO(LDO2, 0x54, 1000, 3300);
1080 TWL6025_ADJUSTABLE_LDO(LDO4, 0x58, 1000, 3300);
1081 TWL6025_ADJUSTABLE_LDO(LDO3, 0x5c, 1000, 3300);
1082 TWL6025_ADJUSTABLE_LDO(LDO5, 0x68, 1000, 3300);
1083 TWL6025_ADJUSTABLE_LDO(LDO1, 0x6c, 1000, 3300);
1084 TWL6025_ADJUSTABLE_LDO(LDO7, 0x74, 1000, 3300);
1085 TWL6025_ADJUSTABLE_LDO(LDO6, 0x60, 1000, 3300);
1086 TWL6025_ADJUSTABLE_LDO(LDOLN, 0x64, 1000, 3300);
1087 TWL6025_ADJUSTABLE_LDO(LDOUSB, 0x70, 1000, 3300);
1088 TWL4030_FIXED_LDO(VINTANA1, 0x3f, 1500, 11, 100, 0x08);
1089 TWL4030_FIXED_LDO(VINTDIG, 0x47, 1500, 13, 100, 0x08);
1090 TWL4030_FIXED_LDO(VUSB1V5, 0x71, 1500, 17, 100, 0x08);
1091 TWL4030_FIXED_LDO(VUSB1V8, 0x74, 1800, 18, 100, 0x08);
1092 TWL4030_FIXED_LDO(VUSB3V1, 0x77, 3100, 19, 150, 0x08);
1093 TWL6030_FIXED_LDO(VANA, 0x50, 2100, 0);
1094 TWL6030_FIXED_LDO(VCXIO, 0x60, 1800, 0);
1095 TWL6030_FIXED_LDO(VDAC, 0x64, 1800, 0);
1096 TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 0);
1097 TWL6030_FIXED_LDO(V1V8, 0x16, 1800, 0);
1098 TWL6030_FIXED_LDO(V2V1, 0x1c, 2100, 0);
1099 TWL6030_FIXED_RESOURCE(CLK32KG, 0x8C, 0);
1100 TWL6025_ADJUSTABLE_SMPS(SMPS3, 0x34);
1101 TWL6025_ADJUSTABLE_SMPS(SMPS4, 0x10);
1102 TWL6025_ADJUSTABLE_SMPS(VIO, 0x16);
1103
1104 static u8 twl_get_smps_offset(void)
1105 {
1106 u8 value;
1107
1108 twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
1109 TWL6030_SMPS_OFFSET);
1110 return value;
1111 }
1112
1113 static u8 twl_get_smps_mult(void)
1114 {
1115 u8 value;
1116
1117 twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
1118 TWL6030_SMPS_MULT);
1119 return value;
1120 }
1121
1122 #define TWL_OF_MATCH(comp, family, label) \
1123 { \
1124 .compatible = comp, \
1125 .data = &family##_INFO_##label, \
1126 }
1127
1128 #define TWL4030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL4030, label)
1129 #define TWL6030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6030, label)
1130 #define TWL6025_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6025, label)
1131 #define TWLFIXED_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLFIXED, label)
1132 #define TWLRES_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLRES, label)
1133 #define TWLSMPS_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLSMPS, label)
1134
1135 static const struct of_device_id twl_of_match[] __devinitconst = {
1136 TWL4030_OF_MATCH("ti,twl4030-vaux1", VAUX1),
1137 TWL4030_OF_MATCH("ti,twl4030-vaux2", VAUX2_4030),
1138 TWL4030_OF_MATCH("ti,twl5030-vaux2", VAUX2),
1139 TWL4030_OF_MATCH("ti,twl4030-vaux3", VAUX3),
1140 TWL4030_OF_MATCH("ti,twl4030-vaux4", VAUX4),
1141 TWL4030_OF_MATCH("ti,twl4030-vmmc1", VMMC1),
1142 TWL4030_OF_MATCH("ti,twl4030-vmmc2", VMMC2),
1143 TWL4030_OF_MATCH("ti,twl4030-vpll1", VPLL1),
1144 TWL4030_OF_MATCH("ti,twl4030-vpll2", VPLL2),
1145 TWL4030_OF_MATCH("ti,twl4030-vsim", VSIM),
1146 TWL4030_OF_MATCH("ti,twl4030-vdac", VDAC),
1147 TWL4030_OF_MATCH("ti,twl4030-vintana2", VINTANA2),
1148 TWL4030_OF_MATCH("ti,twl4030-vio", VIO),
1149 TWL4030_OF_MATCH("ti,twl4030-vdd1", VDD1),
1150 TWL4030_OF_MATCH("ti,twl4030-vdd2", VDD2),
1151 TWL6030_OF_MATCH("ti,twl6030-vdd1", VDD1),
1152 TWL6030_OF_MATCH("ti,twl6030-vdd2", VDD2),
1153 TWL6030_OF_MATCH("ti,twl6030-vdd3", VDD3),
1154 TWL6030_OF_MATCH("ti,twl6030-vaux1", VAUX1_6030),
1155 TWL6030_OF_MATCH("ti,twl6030-vaux2", VAUX2_6030),
1156 TWL6030_OF_MATCH("ti,twl6030-vaux3", VAUX3_6030),
1157 TWL6030_OF_MATCH("ti,twl6030-vmmc", VMMC),
1158 TWL6030_OF_MATCH("ti,twl6030-vpp", VPP),
1159 TWL6030_OF_MATCH("ti,twl6030-vusim", VUSIM),
1160 TWL6025_OF_MATCH("ti,twl6025-ldo2", LDO2),
1161 TWL6025_OF_MATCH("ti,twl6025-ldo4", LDO4),
1162 TWL6025_OF_MATCH("ti,twl6025-ldo3", LDO3),
1163 TWL6025_OF_MATCH("ti,twl6025-ldo5", LDO5),
1164 TWL6025_OF_MATCH("ti,twl6025-ldo1", LDO1),
1165 TWL6025_OF_MATCH("ti,twl6025-ldo7", LDO7),
1166 TWL6025_OF_MATCH("ti,twl6025-ldo6", LDO6),
1167 TWL6025_OF_MATCH("ti,twl6025-ldoln", LDOLN),
1168 TWL6025_OF_MATCH("ti,twl6025-ldousb", LDOUSB),
1169 TWLFIXED_OF_MATCH("ti,twl4030-vintana1", VINTANA1),
1170 TWLFIXED_OF_MATCH("ti,twl4030-vintdig", VINTDIG),
1171 TWLFIXED_OF_MATCH("ti,twl4030-vusb1v5", VUSB1V5),
1172 TWLFIXED_OF_MATCH("ti,twl4030-vusb1v8", VUSB1V8),
1173 TWLFIXED_OF_MATCH("ti,twl4030-vusb3v1", VUSB3V1),
1174 TWLFIXED_OF_MATCH("ti,twl6030-vana", VANA),
1175 TWLFIXED_OF_MATCH("ti,twl6030-vcxio", VCXIO),
1176 TWLFIXED_OF_MATCH("ti,twl6030-vdac", VDAC),
1177 TWLFIXED_OF_MATCH("ti,twl6030-vusb", VUSB),
1178 TWLFIXED_OF_MATCH("ti,twl6030-v1v8", V1V8),
1179 TWLFIXED_OF_MATCH("ti,twl6030-v2v1", V2V1),
1180 TWLRES_OF_MATCH("ti,twl6030-clk32kg", CLK32KG),
1181 TWLSMPS_OF_MATCH("ti,twl6025-smps3", SMPS3),
1182 TWLSMPS_OF_MATCH("ti,twl6025-smps4", SMPS4),
1183 TWLSMPS_OF_MATCH("ti,twl6025-vio", VIO),
1184 {},
1185 };
1186 MODULE_DEVICE_TABLE(of, twl_of_match);
1187
1188 static int __devinit twlreg_probe(struct platform_device *pdev)
1189 {
1190 int i, id;
1191 struct twlreg_info *info;
1192 struct regulator_init_data *initdata;
1193 struct regulation_constraints *c;
1194 struct regulator_dev *rdev;
1195 struct twl_regulator_driver_data *drvdata;
1196 const struct of_device_id *match;
1197
1198 match = of_match_device(twl_of_match, &pdev->dev);
1199 if (match) {
1200 info = match->data;
1201 id = info->desc.id;
1202 initdata = of_get_regulator_init_data(&pdev->dev,
1203 pdev->dev.of_node);
1204 drvdata = NULL;
1205 } else {
1206 id = pdev->id;
1207 initdata = pdev->dev.platform_data;
1208 for (i = 0, info = NULL; i < ARRAY_SIZE(twl_of_match); i++) {
1209 info = twl_of_match[i].data;
1210 if (!info || info->desc.id != id)
1211 continue;
1212 break;
1213 }
1214 drvdata = initdata->driver_data;
1215 if (!drvdata)
1216 return -EINVAL;
1217 }
1218
1219 if (!info)
1220 return -ENODEV;
1221
1222 if (!initdata)
1223 return -EINVAL;
1224
1225 if (drvdata) {
1226 /* copy the driver data into regulator data */
1227 info->features = drvdata->features;
1228 info->data = drvdata->data;
1229 info->set_voltage = drvdata->set_voltage;
1230 info->get_voltage = drvdata->get_voltage;
1231 }
1232
1233 /* Constrain board-specific capabilities according to what
1234 * this driver and the chip itself can actually do.
1235 */
1236 c = &initdata->constraints;
1237 c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY;
1238 c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE
1239 | REGULATOR_CHANGE_MODE
1240 | REGULATOR_CHANGE_STATUS;
1241 switch (id) {
1242 case TWL4030_REG_VIO:
1243 case TWL4030_REG_VDD1:
1244 case TWL4030_REG_VDD2:
1245 case TWL4030_REG_VPLL1:
1246 case TWL4030_REG_VINTANA1:
1247 case TWL4030_REG_VINTANA2:
1248 case TWL4030_REG_VINTDIG:
1249 c->always_on = true;
1250 break;
1251 default:
1252 break;
1253 }
1254
1255 switch (id) {
1256 case TWL6025_REG_SMPS3:
1257 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS3)
1258 info->flags |= SMPS_EXTENDED_EN;
1259 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS3)
1260 info->flags |= SMPS_OFFSET_EN;
1261 break;
1262 case TWL6025_REG_SMPS4:
1263 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS4)
1264 info->flags |= SMPS_EXTENDED_EN;
1265 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS4)
1266 info->flags |= SMPS_OFFSET_EN;
1267 break;
1268 case TWL6025_REG_VIO:
1269 if (twl_get_smps_mult() & SMPS_MULTOFFSET_VIO)
1270 info->flags |= SMPS_EXTENDED_EN;
1271 if (twl_get_smps_offset() & SMPS_MULTOFFSET_VIO)
1272 info->flags |= SMPS_OFFSET_EN;
1273 break;
1274 }
1275
1276 rdev = regulator_register(&info->desc, &pdev->dev, initdata, info,
1277 pdev->dev.of_node);
1278 if (IS_ERR(rdev)) {
1279 dev_err(&pdev->dev, "can't register %s, %ld\n",
1280 info->desc.name, PTR_ERR(rdev));
1281 return PTR_ERR(rdev);
1282 }
1283 platform_set_drvdata(pdev, rdev);
1284
1285 if (twl_class_is_4030())
1286 twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_REMAP,
1287 info->remap);
1288
1289 /* NOTE: many regulators support short-circuit IRQs (presentable
1290 * as REGULATOR_OVER_CURRENT notifications?) configured via:
1291 * - SC_CONFIG
1292 * - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4)
1293 * - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2)
1294 * - IT_CONFIG
1295 */
1296
1297 return 0;
1298 }
1299
1300 static int __devexit twlreg_remove(struct platform_device *pdev)
1301 {
1302 regulator_unregister(platform_get_drvdata(pdev));
1303 return 0;
1304 }
1305
1306 MODULE_ALIAS("platform:twl_reg");
1307
1308 static struct platform_driver twlreg_driver = {
1309 .probe = twlreg_probe,
1310 .remove = __devexit_p(twlreg_remove),
1311 /* NOTE: short name, to work around driver model truncation of
1312 * "twl_regulator.12" (and friends) to "twl_regulator.1".
1313 */
1314 .driver = {
1315 .name = "twl_reg",
1316 .owner = THIS_MODULE,
1317 .of_match_table = of_match_ptr(twl_of_match),
1318 },
1319 };
1320
1321 static int __init twlreg_init(void)
1322 {
1323 return platform_driver_register(&twlreg_driver);
1324 }
1325 subsys_initcall(twlreg_init);
1326
1327 static void __exit twlreg_exit(void)
1328 {
1329 platform_driver_unregister(&twlreg_driver);
1330 }
1331 module_exit(twlreg_exit)
1332
1333 MODULE_DESCRIPTION("TWL regulator driver");
1334 MODULE_LICENSE("GPL");
Linux with added FPC-III support