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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
33struct 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
107static inline int
108twlreg_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
118static inline int
119twlreg_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
130static 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
149static 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
159static 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
180static 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
199static 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
219static 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
236static 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
253static 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
269static 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
296static 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
330static 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
388static const u16 VAUX1_VSEL_table[] = {
389 UNSUP(1500), UNSUP(1800), 2500, 2800,
390 3000, 3000, 3000, 3000,
391};
392static 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};
398static 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};
404static const u16 VAUX3_VSEL_table[] = {
405 1500, 1800, 2500, 2800,
406 3000, 3000, 3000, 3000,
407};
408static 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};
414static const u16 VMMC1_VSEL_table[] = {
415 1850, 2850, 3000, 3150,
416};
417static 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};
423static const u16 VPLL1_VSEL_table[] = {
424 1000, 1200, 1300, 1800,
425 UNSUP(2800), UNSUP(3000), UNSUP(3000), UNSUP(3000),
426};
427static 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};
433static const u16 VSIM_VSEL_table[] = {
434 UNSUP(1000), UNSUP(1200), UNSUP(1300), 1800,
435 2800, 3000, 3000, 3000,
436};
437static const u16 VDAC_VSEL_table[] = {
438 1200, 1300, 1800, 1800,
439};
440static const u16 VDD1_VSEL_table[] = {
441 800, 1450,
442};
443static const u16 VDD2_VSEL_table[] = {
444 800, 1450, 1500,
445};
446static const u16 VIO_VSEL_table[] = {
447 1800, 1850,
448};
449static const u16 VINTANA2_VSEL_table[] = {
450 2500, 2750,
451};
452
453static 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
461static int
462twl4030ldo_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
489static 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
502static 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
517static 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
524static int
525twl6030ldo_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
544static 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
560static 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 */
580static 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
587static 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
594static 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
608static 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
622static 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
633static 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
720static int
721twl6030smps_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
810static 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
817static 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, turnon_delay) \
839 TWL_FIXED_LDO(label, offset, mVolts, 0x0, 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) { \
860 .base = offset, \
861 .min_mV = min_mVolts, \
862 .max_mV = max_mVolts, \
863 .desc = { \
864 .name = #label, \
865 .id = TWL6030_REG_##label, \
866 .n_voltages = (max_mVolts - min_mVolts)/100 + 1, \
867 .ops = &twl6030ldo_ops, \
868 .type = REGULATOR_VOLTAGE, \
869 .owner = THIS_MODULE, \
870 }, \
871 }
872
873#define TWL6025_ADJUSTABLE_LDO(label, offset, min_mVolts, max_mVolts) { \
874 .base = offset, \
875 .min_mV = min_mVolts, \
876 .max_mV = max_mVolts, \
877 .desc = { \
878 .name = #label, \
879 .id = TWL6025_REG_##label, \
880 .n_voltages = ((max_mVolts - min_mVolts)/100) + 1, \
881 .ops = &twl6030ldo_ops, \
882 .type = REGULATOR_VOLTAGE, \
883 .owner = THIS_MODULE, \
884 }, \
885 }
886
887#define TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, remap_conf, \
888 family, operations) { \
889 .base = offset, \
890 .id = num, \
891 .min_mV = mVolts, \
892 .delay = turnon_delay, \
893 .remap = remap_conf, \
894 .desc = { \
895 .name = #label, \
896 .id = family##_REG_##label, \
897 .n_voltages = 1, \
898 .ops = &operations, \
899 .type = REGULATOR_VOLTAGE, \
900 .owner = THIS_MODULE, \
901 }, \
902 }
903
904#define TWL6030_FIXED_RESOURCE(label, offset, turnon_delay) { \
905 .base = offset, \
906 .delay = turnon_delay, \
907 .desc = { \
908 .name = #label, \
909 .id = TWL6030_REG_##label, \
910 .ops = &twl6030_fixed_resource, \
911 .type = REGULATOR_VOLTAGE, \
912 .owner = THIS_MODULE, \
913 }, \
914 }
915
916#define TWL6025_ADJUSTABLE_SMPS(label, offset) { \
917 .base = offset, \
918 .min_mV = 600, \
919 .max_mV = 2100, \
920 .desc = { \
921 .name = #label, \
922 .id = TWL6025_REG_##label, \
923 .n_voltages = 63, \
924 .ops = &twlsmps_ops, \
925 .type = REGULATOR_VOLTAGE, \
926 .owner = THIS_MODULE, \
927 }, \
928 }
929
930/*
931 * We list regulators here if systems need some level of
932 * software control over them after boot.
933 */
934static struct twlreg_info twl_regs[] = {
935 TWL4030_ADJUSTABLE_LDO(VAUX1, 0x17, 1, 100, 0x08),
936 TWL4030_ADJUSTABLE_LDO(VAUX2_4030, 0x1b, 2, 100, 0x08),
937 TWL4030_ADJUSTABLE_LDO(VAUX2, 0x1b, 2, 100, 0x08),
938 TWL4030_ADJUSTABLE_LDO(VAUX3, 0x1f, 3, 100, 0x08),
939 TWL4030_ADJUSTABLE_LDO(VAUX4, 0x23, 4, 100, 0x08),
940 TWL4030_ADJUSTABLE_LDO(VMMC1, 0x27, 5, 100, 0x08),
941 TWL4030_ADJUSTABLE_LDO(VMMC2, 0x2b, 6, 100, 0x08),
942 TWL4030_ADJUSTABLE_LDO(VPLL1, 0x2f, 7, 100, 0x00),
943 TWL4030_ADJUSTABLE_LDO(VPLL2, 0x33, 8, 100, 0x08),
944 TWL4030_ADJUSTABLE_LDO(VSIM, 0x37, 9, 100, 0x00),
945 TWL4030_ADJUSTABLE_LDO(VDAC, 0x3b, 10, 100, 0x08),
946 TWL4030_FIXED_LDO(VINTANA1, 0x3f, 1500, 11, 100, 0x08),
947 TWL4030_ADJUSTABLE_LDO(VINTANA2, 0x43, 12, 100, 0x08),
948 TWL4030_FIXED_LDO(VINTDIG, 0x47, 1500, 13, 100, 0x08),
949 TWL4030_ADJUSTABLE_LDO(VIO, 0x4b, 14, 1000, 0x08),
950 TWL4030_ADJUSTABLE_LDO(VDD1, 0x55, 15, 1000, 0x08),
951 TWL4030_ADJUSTABLE_LDO(VDD2, 0x63, 16, 1000, 0x08),
952 TWL4030_FIXED_LDO(VUSB1V5, 0x71, 1500, 17, 100, 0x08),
953 TWL4030_FIXED_LDO(VUSB1V8, 0x74, 1800, 18, 100, 0x08),
954 TWL4030_FIXED_LDO(VUSB3V1, 0x77, 3100, 19, 150, 0x08),
955 /* VUSBCP is managed *only* by the USB subchip */
956
957 /* 6030 REG with base as PMC Slave Misc : 0x0030 */
958 /* Turnon-delay and remap configuration values for 6030 are not
959 verified since the specification is not public */
960 TWL6030_ADJUSTABLE_LDO(VAUX1_6030, 0x54, 1000, 3300),
961 TWL6030_ADJUSTABLE_LDO(VAUX2_6030, 0x58, 1000, 3300),
962 TWL6030_ADJUSTABLE_LDO(VAUX3_6030, 0x5c, 1000, 3300),
963 TWL6030_ADJUSTABLE_LDO(VMMC, 0x68, 1000, 3300),
964 TWL6030_ADJUSTABLE_LDO(VPP, 0x6c, 1000, 3300),
965 TWL6030_ADJUSTABLE_LDO(VUSIM, 0x74, 1000, 3300),
966 TWL6030_FIXED_LDO(VANA, 0x50, 2100, 0),
967 TWL6030_FIXED_LDO(VCXIO, 0x60, 1800, 0),
968 TWL6030_FIXED_LDO(VDAC, 0x64, 1800, 0),
969 TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 0),
970 TWL6030_FIXED_RESOURCE(CLK32KG, 0x8C, 0),
971
972 /* 6025 are renamed compared to 6030 versions */
973 TWL6025_ADJUSTABLE_LDO(LDO2, 0x54, 1000, 3300),
974 TWL6025_ADJUSTABLE_LDO(LDO4, 0x58, 1000, 3300),
975 TWL6025_ADJUSTABLE_LDO(LDO3, 0x5c, 1000, 3300),
976 TWL6025_ADJUSTABLE_LDO(LDO5, 0x68, 1000, 3300),
977 TWL6025_ADJUSTABLE_LDO(LDO1, 0x6c, 1000, 3300),
978 TWL6025_ADJUSTABLE_LDO(LDO7, 0x74, 1000, 3300),
979 TWL6025_ADJUSTABLE_LDO(LDO6, 0x60, 1000, 3300),
980 TWL6025_ADJUSTABLE_LDO(LDOLN, 0x64, 1000, 3300),
981 TWL6025_ADJUSTABLE_LDO(LDOUSB, 0x70, 1000, 3300),
982
983 TWL6025_ADJUSTABLE_SMPS(SMPS3, 0x34),
984 TWL6025_ADJUSTABLE_SMPS(SMPS4, 0x10),
985 TWL6025_ADJUSTABLE_SMPS(VIO, 0x16),
986};
987
988static u8 twl_get_smps_offset(void)
989{
990 u8 value;
991
992 twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
993 TWL6030_SMPS_OFFSET);
994 return value;
995}
996
997static u8 twl_get_smps_mult(void)
998{
999 u8 value;
1000
1001 twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
1002 TWL6030_SMPS_MULT);
1003 return value;
1004}
1005
1006static int __devinit twlreg_probe(struct platform_device *pdev)
1007{
1008 int i;
1009 struct twlreg_info *info;
1010 struct regulator_init_data *initdata;
1011 struct regulation_constraints *c;
1012 struct regulator_dev *rdev;
1013
1014 for (i = 0, info = NULL; i < ARRAY_SIZE(twl_regs); i++) {
1015 if (twl_regs[i].desc.id != pdev->id)
1016 continue;
1017 info = twl_regs + i;
1018 break;
1019 }
1020 if (!info)
1021 return -ENODEV;
1022
1023 initdata = pdev->dev.platform_data;
1024 if (!initdata)
1025 return -EINVAL;
1026
1027 /* copy the features into regulator data */
1028 info->features = (unsigned long)initdata->driver_data;
1029
1030 /* Constrain board-specific capabilities according to what
1031 * this driver and the chip itself can actually do.
1032 */
1033 c = &initdata->constraints;
1034 c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY;
1035 c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE
1036 | REGULATOR_CHANGE_MODE
1037 | REGULATOR_CHANGE_STATUS;
1038 switch (pdev->id) {
1039 case TWL4030_REG_VIO:
1040 case TWL4030_REG_VDD1:
1041 case TWL4030_REG_VDD2:
1042 case TWL4030_REG_VPLL1:
1043 case TWL4030_REG_VINTANA1:
1044 case TWL4030_REG_VINTANA2:
1045 case TWL4030_REG_VINTDIG:
1046 c->always_on = true;
1047 break;
1048 default:
1049 break;
1050 }
1051
1052 switch (pdev->id) {
1053 case TWL6025_REG_SMPS3:
1054 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS3)
1055 info->flags |= SMPS_EXTENDED_EN;
1056 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS3)
1057 info->flags |= SMPS_OFFSET_EN;
1058 break;
1059 case TWL6025_REG_SMPS4:
1060 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS4)
1061 info->flags |= SMPS_EXTENDED_EN;
1062 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS4)
1063 info->flags |= SMPS_OFFSET_EN;
1064 break;
1065 case TWL6025_REG_VIO:
1066 if (twl_get_smps_mult() & SMPS_MULTOFFSET_VIO)
1067 info->flags |= SMPS_EXTENDED_EN;
1068 if (twl_get_smps_offset() & SMPS_MULTOFFSET_VIO)
1069 info->flags |= SMPS_OFFSET_EN;
1070 break;
1071 }
1072
1073 rdev = regulator_register(&info->desc, &pdev->dev, initdata, info);
1074 if (IS_ERR(rdev)) {
1075 dev_err(&pdev->dev, "can't register %s, %ld\n",
1076 info->desc.name, PTR_ERR(rdev));
1077 return PTR_ERR(rdev);
1078 }
1079 platform_set_drvdata(pdev, rdev);
1080
1081 if (twl_class_is_4030())
1082 twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_REMAP,
1083 info->remap);
1084
1085 /* NOTE: many regulators support short-circuit IRQs (presentable
1086 * as REGULATOR_OVER_CURRENT notifications?) configured via:
1087 * - SC_CONFIG
1088 * - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4)
1089 * - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2)
1090 * - IT_CONFIG
1091 */
1092
1093 return 0;
1094}
1095
1096static int __devexit twlreg_remove(struct platform_device *pdev)
1097{
1098 regulator_unregister(platform_get_drvdata(pdev));
1099 return 0;
1100}
1101
1102MODULE_ALIAS("platform:twl_reg");
1103
1104static struct platform_driver twlreg_driver = {
1105 .probe = twlreg_probe,
1106 .remove = __devexit_p(twlreg_remove),
1107 /* NOTE: short name, to work around driver model truncation of
1108 * "twl_regulator.12" (and friends) to "twl_regulator.1".
1109 */
1110 .driver.name = "twl_reg",
1111 .driver.owner = THIS_MODULE,
1112};
1113
1114static int __init twlreg_init(void)
1115{
1116 return platform_driver_register(&twlreg_driver);
1117}
1118subsys_initcall(twlreg_init);
1119
1120static void __exit twlreg_exit(void)
1121{
1122 platform_driver_unregister(&twlreg_driver);
1123}
1124module_exit(twlreg_exit)
1125
1126MODULE_DESCRIPTION("TWL regulator driver");
1127MODULE_LICENSE("GPL");
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
35struct 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
120static inline int
121twlreg_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
131static inline int
132twlreg_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
143static 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
162static 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
172static 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
192static 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
209static 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
226static 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
233static 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
240static 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
257static 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
274static 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
290static 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
317static 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
351static 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
407static const u16 VAUX1_VSEL_table[] = {
408 UNSUP(1500), UNSUP(1800), 2500, 2800,
409 3000, 3000, 3000, 3000,
410};
411static 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};
417static 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};
423static const u16 VAUX3_VSEL_table[] = {
424 1500, 1800, 2500, 2800,
425 3000, 3000, 3000, 3000,
426};
427static 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};
433static const u16 VMMC1_VSEL_table[] = {
434 1850, 2850, 3000, 3150,
435};
436static 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};
442static const u16 VPLL1_VSEL_table[] = {
443 1000, 1200, 1300, 1800,
444 UNSUP(2800), UNSUP(3000), UNSUP(3000), UNSUP(3000),
445};
446static 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};
452static const u16 VSIM_VSEL_table[] = {
453 UNSUP(1000), UNSUP(1200), UNSUP(1300), 1800,
454 2800, 3000, 3000, 3000,
455};
456static const u16 VDAC_VSEL_table[] = {
457 1200, 1300, 1800, 1800,
458};
459static const u16 VDD1_VSEL_table[] = {
460 800, 1450,
461};
462static const u16 VDD2_VSEL_table[] = {
463 800, 1450, 1500,
464};
465static const u16 VIO_VSEL_table[] = {
466 1800, 1850,
467};
468static const u16 VINTANA2_VSEL_table[] = {
469 2500, 2750,
470};
471
472static 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
480static int
481twl4030ldo_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
489static 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
502static 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
518static int
519twl4030smps_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
535static 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
549static struct regulator_ops twl4030smps_ops = {
550 .set_voltage = twl4030smps_set_voltage,
551 .get_voltage = twl4030smps_get_voltage,
552};
553
554static 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
565static 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
575static struct regulator_ops twl6030coresmps_ops = {
576 .set_voltage = twl6030coresmps_set_voltage,
577 .get_voltage = twl6030coresmps_get_voltage,
578};
579
580static 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
587static int
588twl6030ldo_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
607static 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
623static 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 */
644static 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
651static 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
658static 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
673static 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
688static 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
700static 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
787static int
788twl6030smps_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
873static 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
880static 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) \
907static 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) \
925static 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) \
940static 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) \
951static 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) \
966static 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) \
982static 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) \
999static 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) \
1012static 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 */
1030TWL4030_ADJUSTABLE_LDO(VAUX1, 0x17, 1, 100, 0x08);
1031TWL4030_ADJUSTABLE_LDO(VAUX2_4030, 0x1b, 2, 100, 0x08);
1032TWL4030_ADJUSTABLE_LDO(VAUX2, 0x1b, 2, 100, 0x08);
1033TWL4030_ADJUSTABLE_LDO(VAUX3, 0x1f, 3, 100, 0x08);
1034TWL4030_ADJUSTABLE_LDO(VAUX4, 0x23, 4, 100, 0x08);
1035TWL4030_ADJUSTABLE_LDO(VMMC1, 0x27, 5, 100, 0x08);
1036TWL4030_ADJUSTABLE_LDO(VMMC2, 0x2b, 6, 100, 0x08);
1037TWL4030_ADJUSTABLE_LDO(VPLL1, 0x2f, 7, 100, 0x00);
1038TWL4030_ADJUSTABLE_LDO(VPLL2, 0x33, 8, 100, 0x08);
1039TWL4030_ADJUSTABLE_LDO(VSIM, 0x37, 9, 100, 0x00);
1040TWL4030_ADJUSTABLE_LDO(VDAC, 0x3b, 10, 100, 0x08);
1041TWL4030_ADJUSTABLE_LDO(VINTANA2, 0x43, 12, 100, 0x08);
1042TWL4030_ADJUSTABLE_LDO(VIO, 0x4b, 14, 1000, 0x08);
1043TWL4030_ADJUSTABLE_SMPS(VDD1, 0x55, 15, 1000, 0x08);
1044TWL4030_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 */
1049TWL6030_ADJUSTABLE_SMPS(VDD1);
1050TWL6030_ADJUSTABLE_SMPS(VDD2);
1051TWL6030_ADJUSTABLE_SMPS(VDD3);
1052TWL6030_ADJUSTABLE_LDO(VAUX1_6030, 0x54, 1000, 3300);
1053TWL6030_ADJUSTABLE_LDO(VAUX2_6030, 0x58, 1000, 3300);
1054TWL6030_ADJUSTABLE_LDO(VAUX3_6030, 0x5c, 1000, 3300);
1055TWL6030_ADJUSTABLE_LDO(VMMC, 0x68, 1000, 3300);
1056TWL6030_ADJUSTABLE_LDO(VPP, 0x6c, 1000, 3300);
1057TWL6030_ADJUSTABLE_LDO(VUSIM, 0x74, 1000, 3300);
1058/* 6025 are renamed compared to 6030 versions */
1059TWL6025_ADJUSTABLE_LDO(LDO2, 0x54, 1000, 3300);
1060TWL6025_ADJUSTABLE_LDO(LDO4, 0x58, 1000, 3300);
1061TWL6025_ADJUSTABLE_LDO(LDO3, 0x5c, 1000, 3300);
1062TWL6025_ADJUSTABLE_LDO(LDO5, 0x68, 1000, 3300);
1063TWL6025_ADJUSTABLE_LDO(LDO1, 0x6c, 1000, 3300);
1064TWL6025_ADJUSTABLE_LDO(LDO7, 0x74, 1000, 3300);
1065TWL6025_ADJUSTABLE_LDO(LDO6, 0x60, 1000, 3300);
1066TWL6025_ADJUSTABLE_LDO(LDOLN, 0x64, 1000, 3300);
1067TWL6025_ADJUSTABLE_LDO(LDOUSB, 0x70, 1000, 3300);
1068TWL4030_FIXED_LDO(VINTANA1, 0x3f, 1500, 11, 100, 0x08);
1069TWL4030_FIXED_LDO(VINTDIG, 0x47, 1500, 13, 100, 0x08);
1070TWL4030_FIXED_LDO(VUSB1V5, 0x71, 1500, 17, 100, 0x08);
1071TWL4030_FIXED_LDO(VUSB1V8, 0x74, 1800, 18, 100, 0x08);
1072TWL4030_FIXED_LDO(VUSB3V1, 0x77, 3100, 19, 150, 0x08);
1073TWL6030_FIXED_LDO(VANA, 0x50, 2100, 0);
1074TWL6030_FIXED_LDO(VCXIO, 0x60, 1800, 0);
1075TWL6030_FIXED_LDO(VDAC, 0x64, 1800, 0);
1076TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 0);
1077TWL6030_FIXED_LDO(V1V8, 0x16, 1800, 0);
1078TWL6030_FIXED_LDO(V2V1, 0x1c, 2100, 0);
1079TWL6030_FIXED_RESOURCE(CLK32KG, 0x8C, 0);
1080TWL6025_ADJUSTABLE_SMPS(SMPS3, 0x34);
1081TWL6025_ADJUSTABLE_SMPS(SMPS4, 0x10);
1082TWL6025_ADJUSTABLE_SMPS(VIO, 0x16);
1083
1084static 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
1093static 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
1115static 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-vintana1", VINTANA1),
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};
1166MODULE_DEVICE_TABLE(of, twl_of_match);
1167
1168static 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
1287static int __devexit twlreg_remove(struct platform_device *pdev)
1288{
1289 regulator_unregister(platform_get_drvdata(pdev));
1290 return 0;
1291}
1292
1293MODULE_ALIAS("platform:twl_reg");
1294
1295static 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
1308static int __init twlreg_init(void)
1309{
1310 return platform_driver_register(&twlreg_driver);
1311}
1312subsys_initcall(twlreg_init);
1313
1314static void __exit twlreg_exit(void)
1315{
1316 platform_driver_unregister(&twlreg_driver);
1317}
1318module_exit(twlreg_exit)
1319
1320MODULE_DESCRIPTION("TWL regulator driver");
1321MODULE_LICENSE("GPL");