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1/*
2 * Split TWL6030 logic from twl-regulator.c:
3 * Copyright (C) 2008 David Brownell
4 *
5 * Copyright (C) 2016 Nicolae Rosia <nicolae.rosia@gmail.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 */
12
13#include <linux/module.h>
14#include <linux/string.h>
15#include <linux/slab.h>
16#include <linux/init.h>
17#include <linux/err.h>
18#include <linux/platform_device.h>
19#include <linux/of.h>
20#include <linux/of_device.h>
21#include <linux/regulator/driver.h>
22#include <linux/regulator/machine.h>
23#include <linux/regulator/of_regulator.h>
24#include <linux/i2c/twl.h>
25#include <linux/delay.h>
26
27struct twlreg_info {
28 /* start of regulator's PM_RECEIVER control register bank */
29 u8 base;
30
31 /* twl resource ID, for resource control state machine */
32 u8 id;
33
34 /* chip constraints on regulator behavior */
35 u16 min_mV;
36
37 u8 flags;
38
39 /* used by regulator core */
40 struct regulator_desc desc;
41
42 /* chip specific features */
43 unsigned long features;
44
45 /* data passed from board for external get/set voltage */
46 void *data;
47};
48
49
50/* LDO control registers ... offset is from the base of its register bank.
51 * The first three registers of all power resource banks help hardware to
52 * manage the various resource groups.
53 */
54/* Common offset in TWL4030/6030 */
55#define VREG_GRP 0
56/* TWL6030 register offsets */
57#define VREG_TRANS 1
58#define VREG_STATE 2
59#define VREG_VOLTAGE 3
60#define VREG_VOLTAGE_SMPS 4
61/* TWL6030 Misc register offsets */
62#define VREG_BC_ALL 1
63#define VREG_BC_REF 2
64#define VREG_BC_PROC 3
65#define VREG_BC_CLK_RST 4
66
67/* TWL6030 LDO register values for CFG_STATE */
68#define TWL6030_CFG_STATE_OFF 0x00
69#define TWL6030_CFG_STATE_ON 0x01
70#define TWL6030_CFG_STATE_OFF2 0x02
71#define TWL6030_CFG_STATE_SLEEP 0x03
72#define TWL6030_CFG_STATE_GRP_SHIFT 5
73#define TWL6030_CFG_STATE_APP_SHIFT 2
74#define TWL6030_CFG_STATE_APP_MASK (0x03 << TWL6030_CFG_STATE_APP_SHIFT)
75#define TWL6030_CFG_STATE_APP(v) (((v) & TWL6030_CFG_STATE_APP_MASK) >>\
76 TWL6030_CFG_STATE_APP_SHIFT)
77
78/* Flags for SMPS Voltage reading */
79#define SMPS_OFFSET_EN BIT(0)
80#define SMPS_EXTENDED_EN BIT(1)
81
82/* twl6032 SMPS EPROM values */
83#define TWL6030_SMPS_OFFSET 0xB0
84#define TWL6030_SMPS_MULT 0xB3
85#define SMPS_MULTOFFSET_SMPS4 BIT(0)
86#define SMPS_MULTOFFSET_VIO BIT(1)
87#define SMPS_MULTOFFSET_SMPS3 BIT(6)
88
89static inline int
90twlreg_read(struct twlreg_info *info, unsigned slave_subgp, unsigned offset)
91{
92 u8 value;
93 int status;
94
95 status = twl_i2c_read_u8(slave_subgp,
96 &value, info->base + offset);
97 return (status < 0) ? status : value;
98}
99
100static inline int
101twlreg_write(struct twlreg_info *info, unsigned slave_subgp, unsigned offset,
102 u8 value)
103{
104 return twl_i2c_write_u8(slave_subgp,
105 value, info->base + offset);
106}
107
108/* generic power resource operations, which work on all regulators */
109static int twlreg_grp(struct regulator_dev *rdev)
110{
111 return twlreg_read(rdev_get_drvdata(rdev), TWL_MODULE_PM_RECEIVER,
112 VREG_GRP);
113}
114
115/*
116 * Enable/disable regulators by joining/leaving the P1 (processor) group.
117 * We assume nobody else is updating the DEV_GRP registers.
118 */
119/* definition for 6030 family */
120#define P3_GRP_6030 BIT(2) /* secondary processor, modem, etc */
121#define P2_GRP_6030 BIT(1) /* "peripherals" */
122#define P1_GRP_6030 BIT(0) /* CPU/Linux */
123
124static int twl6030reg_is_enabled(struct regulator_dev *rdev)
125{
126 struct twlreg_info *info = rdev_get_drvdata(rdev);
127 int grp = 0, val;
128
129 if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS))) {
130 grp = twlreg_grp(rdev);
131 if (grp < 0)
132 return grp;
133 grp &= P1_GRP_6030;
134 } else {
135 grp = 1;
136 }
137
138 val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
139 val = TWL6030_CFG_STATE_APP(val);
140
141 return grp && (val == TWL6030_CFG_STATE_ON);
142}
143
144#define PB_I2C_BUSY BIT(0)
145#define PB_I2C_BWEN BIT(1)
146
147
148static int twl6030reg_enable(struct regulator_dev *rdev)
149{
150 struct twlreg_info *info = rdev_get_drvdata(rdev);
151 int grp = 0;
152 int ret;
153
154 if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
155 grp = twlreg_grp(rdev);
156 if (grp < 0)
157 return grp;
158
159 ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
160 grp << TWL6030_CFG_STATE_GRP_SHIFT |
161 TWL6030_CFG_STATE_ON);
162 return ret;
163}
164
165static int twl6030reg_disable(struct regulator_dev *rdev)
166{
167 struct twlreg_info *info = rdev_get_drvdata(rdev);
168 int grp = 0;
169 int ret;
170
171 if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
172 grp = P1_GRP_6030 | P2_GRP_6030 | P3_GRP_6030;
173
174 /* For 6030, set the off state for all grps enabled */
175 ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
176 (grp) << TWL6030_CFG_STATE_GRP_SHIFT |
177 TWL6030_CFG_STATE_OFF);
178
179 return ret;
180}
181
182static int twl6030reg_get_status(struct regulator_dev *rdev)
183{
184 struct twlreg_info *info = rdev_get_drvdata(rdev);
185 int val;
186
187 val = twlreg_grp(rdev);
188 if (val < 0)
189 return val;
190
191 val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
192
193 switch (TWL6030_CFG_STATE_APP(val)) {
194 case TWL6030_CFG_STATE_ON:
195 return REGULATOR_STATUS_NORMAL;
196
197 case TWL6030_CFG_STATE_SLEEP:
198 return REGULATOR_STATUS_STANDBY;
199
200 case TWL6030_CFG_STATE_OFF:
201 case TWL6030_CFG_STATE_OFF2:
202 default:
203 break;
204 }
205
206 return REGULATOR_STATUS_OFF;
207}
208
209static int twl6030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
210{
211 struct twlreg_info *info = rdev_get_drvdata(rdev);
212 int grp = 0;
213 int val;
214
215 if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
216 grp = twlreg_grp(rdev);
217
218 if (grp < 0)
219 return grp;
220
221 /* Compose the state register settings */
222 val = grp << TWL6030_CFG_STATE_GRP_SHIFT;
223 /* We can only set the mode through state machine commands... */
224 switch (mode) {
225 case REGULATOR_MODE_NORMAL:
226 val |= TWL6030_CFG_STATE_ON;
227 break;
228 case REGULATOR_MODE_STANDBY:
229 val |= TWL6030_CFG_STATE_SLEEP;
230 break;
231
232 default:
233 return -EINVAL;
234 }
235
236 return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, val);
237}
238
239static int twl6030coresmps_set_voltage(struct regulator_dev *rdev, int min_uV,
240 int max_uV, unsigned *selector)
241{
242 return -ENODEV;
243}
244
245static int twl6030coresmps_get_voltage(struct regulator_dev *rdev)
246{
247 return -ENODEV;
248}
249
250static struct regulator_ops twl6030coresmps_ops = {
251 .set_voltage = twl6030coresmps_set_voltage,
252 .get_voltage = twl6030coresmps_get_voltage,
253};
254
255static int twl6030ldo_list_voltage(struct regulator_dev *rdev, unsigned sel)
256{
257 struct twlreg_info *info = rdev_get_drvdata(rdev);
258
259 switch (sel) {
260 case 0:
261 return 0;
262 case 1 ... 24:
263 /* Linear mapping from 00000001 to 00011000:
264 * Absolute voltage value = 1.0 V + 0.1 V × (sel – 00000001)
265 */
266 return (info->min_mV + 100 * (sel - 1)) * 1000;
267 case 25 ... 30:
268 return -EINVAL;
269 case 31:
270 return 2750000;
271 default:
272 return -EINVAL;
273 }
274}
275
276static int
277twl6030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
278{
279 struct twlreg_info *info = rdev_get_drvdata(rdev);
280
281 return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE,
282 selector);
283}
284
285static int twl6030ldo_get_voltage_sel(struct regulator_dev *rdev)
286{
287 struct twlreg_info *info = rdev_get_drvdata(rdev);
288 int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE);
289
290 return vsel;
291}
292
293static struct regulator_ops twl6030ldo_ops = {
294 .list_voltage = twl6030ldo_list_voltage,
295
296 .set_voltage_sel = twl6030ldo_set_voltage_sel,
297 .get_voltage_sel = twl6030ldo_get_voltage_sel,
298
299 .enable = twl6030reg_enable,
300 .disable = twl6030reg_disable,
301 .is_enabled = twl6030reg_is_enabled,
302
303 .set_mode = twl6030reg_set_mode,
304
305 .get_status = twl6030reg_get_status,
306};
307
308static struct regulator_ops twl6030fixed_ops = {
309 .list_voltage = regulator_list_voltage_linear,
310
311 .enable = twl6030reg_enable,
312 .disable = twl6030reg_disable,
313 .is_enabled = twl6030reg_is_enabled,
314
315 .set_mode = twl6030reg_set_mode,
316
317 .get_status = twl6030reg_get_status,
318};
319
320/*
321 * SMPS status and control
322 */
323
324static int twl6030smps_list_voltage(struct regulator_dev *rdev, unsigned index)
325{
326 struct twlreg_info *info = rdev_get_drvdata(rdev);
327
328 int voltage = 0;
329
330 switch (info->flags) {
331 case SMPS_OFFSET_EN:
332 voltage = 100000;
333 /* fall through */
334 case 0:
335 switch (index) {
336 case 0:
337 voltage = 0;
338 break;
339 case 58:
340 voltage = 1350 * 1000;
341 break;
342 case 59:
343 voltage = 1500 * 1000;
344 break;
345 case 60:
346 voltage = 1800 * 1000;
347 break;
348 case 61:
349 voltage = 1900 * 1000;
350 break;
351 case 62:
352 voltage = 2100 * 1000;
353 break;
354 default:
355 voltage += (600000 + (12500 * (index - 1)));
356 }
357 break;
358 case SMPS_EXTENDED_EN:
359 switch (index) {
360 case 0:
361 voltage = 0;
362 break;
363 case 58:
364 voltage = 2084 * 1000;
365 break;
366 case 59:
367 voltage = 2315 * 1000;
368 break;
369 case 60:
370 voltage = 2778 * 1000;
371 break;
372 case 61:
373 voltage = 2932 * 1000;
374 break;
375 case 62:
376 voltage = 3241 * 1000;
377 break;
378 default:
379 voltage = (1852000 + (38600 * (index - 1)));
380 }
381 break;
382 case SMPS_OFFSET_EN | SMPS_EXTENDED_EN:
383 switch (index) {
384 case 0:
385 voltage = 0;
386 break;
387 case 58:
388 voltage = 4167 * 1000;
389 break;
390 case 59:
391 voltage = 2315 * 1000;
392 break;
393 case 60:
394 voltage = 2778 * 1000;
395 break;
396 case 61:
397 voltage = 2932 * 1000;
398 break;
399 case 62:
400 voltage = 3241 * 1000;
401 break;
402 default:
403 voltage = (2161000 + (38600 * (index - 1)));
404 }
405 break;
406 }
407
408 return voltage;
409}
410
411static int twl6030smps_map_voltage(struct regulator_dev *rdev, int min_uV,
412 int max_uV)
413{
414 struct twlreg_info *info = rdev_get_drvdata(rdev);
415 int vsel = 0;
416
417 switch (info->flags) {
418 case 0:
419 if (min_uV == 0)
420 vsel = 0;
421 else if ((min_uV >= 600000) && (min_uV <= 1300000)) {
422 vsel = DIV_ROUND_UP(min_uV - 600000, 12500);
423 vsel++;
424 }
425 /* Values 1..57 for vsel are linear and can be calculated
426 * values 58..62 are non linear.
427 */
428 else if ((min_uV > 1900000) && (min_uV <= 2100000))
429 vsel = 62;
430 else if ((min_uV > 1800000) && (min_uV <= 1900000))
431 vsel = 61;
432 else if ((min_uV > 1500000) && (min_uV <= 1800000))
433 vsel = 60;
434 else if ((min_uV > 1350000) && (min_uV <= 1500000))
435 vsel = 59;
436 else if ((min_uV > 1300000) && (min_uV <= 1350000))
437 vsel = 58;
438 else
439 return -EINVAL;
440 break;
441 case SMPS_OFFSET_EN:
442 if (min_uV == 0)
443 vsel = 0;
444 else if ((min_uV >= 700000) && (min_uV <= 1420000)) {
445 vsel = DIV_ROUND_UP(min_uV - 700000, 12500);
446 vsel++;
447 }
448 /* Values 1..57 for vsel are linear and can be calculated
449 * values 58..62 are non linear.
450 */
451 else if ((min_uV > 1900000) && (min_uV <= 2100000))
452 vsel = 62;
453 else if ((min_uV > 1800000) && (min_uV <= 1900000))
454 vsel = 61;
455 else if ((min_uV > 1500000) && (min_uV <= 1800000))
456 vsel = 60;
457 else if ((min_uV > 1350000) && (min_uV <= 1500000))
458 vsel = 59;
459 else if ((min_uV > 1300000) && (min_uV <= 1350000))
460 vsel = 58;
461 else
462 return -EINVAL;
463 break;
464 case SMPS_EXTENDED_EN:
465 if (min_uV == 0) {
466 vsel = 0;
467 } else if ((min_uV >= 1852000) && (max_uV <= 4013600)) {
468 vsel = DIV_ROUND_UP(min_uV - 1852000, 38600);
469 vsel++;
470 }
471 break;
472 case SMPS_OFFSET_EN|SMPS_EXTENDED_EN:
473 if (min_uV == 0) {
474 vsel = 0;
475 } else if ((min_uV >= 2161000) && (min_uV <= 4321000)) {
476 vsel = DIV_ROUND_UP(min_uV - 2161000, 38600);
477 vsel++;
478 }
479 break;
480 }
481
482 return vsel;
483}
484
485static int twl6030smps_set_voltage_sel(struct regulator_dev *rdev,
486 unsigned int selector)
487{
488 struct twlreg_info *info = rdev_get_drvdata(rdev);
489
490 return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS,
491 selector);
492}
493
494static int twl6030smps_get_voltage_sel(struct regulator_dev *rdev)
495{
496 struct twlreg_info *info = rdev_get_drvdata(rdev);
497
498 return twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS);
499}
500
501static struct regulator_ops twlsmps_ops = {
502 .list_voltage = twl6030smps_list_voltage,
503 .map_voltage = twl6030smps_map_voltage,
504
505 .set_voltage_sel = twl6030smps_set_voltage_sel,
506 .get_voltage_sel = twl6030smps_get_voltage_sel,
507
508 .enable = twl6030reg_enable,
509 .disable = twl6030reg_disable,
510 .is_enabled = twl6030reg_is_enabled,
511
512 .set_mode = twl6030reg_set_mode,
513
514 .get_status = twl6030reg_get_status,
515};
516
517/*----------------------------------------------------------------------*/
518
519#define TWL6030_ADJUSTABLE_SMPS(label) \
520static const struct twlreg_info TWL6030_INFO_##label = { \
521 .desc = { \
522 .name = #label, \
523 .id = TWL6030_REG_##label, \
524 .ops = &twl6030coresmps_ops, \
525 .type = REGULATOR_VOLTAGE, \
526 .owner = THIS_MODULE, \
527 }, \
528 }
529
530#define TWL6030_ADJUSTABLE_LDO(label, offset, min_mVolts) \
531static const struct twlreg_info TWL6030_INFO_##label = { \
532 .base = offset, \
533 .min_mV = min_mVolts, \
534 .desc = { \
535 .name = #label, \
536 .id = TWL6030_REG_##label, \
537 .n_voltages = 32, \
538 .ops = &twl6030ldo_ops, \
539 .type = REGULATOR_VOLTAGE, \
540 .owner = THIS_MODULE, \
541 }, \
542 }
543
544#define TWL6032_ADJUSTABLE_LDO(label, offset, min_mVolts) \
545static const struct twlreg_info TWL6032_INFO_##label = { \
546 .base = offset, \
547 .min_mV = min_mVolts, \
548 .desc = { \
549 .name = #label, \
550 .id = TWL6032_REG_##label, \
551 .n_voltages = 32, \
552 .ops = &twl6030ldo_ops, \
553 .type = REGULATOR_VOLTAGE, \
554 .owner = THIS_MODULE, \
555 }, \
556 }
557
558#define TWL6030_FIXED_LDO(label, offset, mVolts, turnon_delay) \
559static const struct twlreg_info TWLFIXED_INFO_##label = { \
560 .base = offset, \
561 .id = 0, \
562 .min_mV = mVolts, \
563 .desc = { \
564 .name = #label, \
565 .id = TWL6030##_REG_##label, \
566 .n_voltages = 1, \
567 .ops = &twl6030fixed_ops, \
568 .type = REGULATOR_VOLTAGE, \
569 .owner = THIS_MODULE, \
570 .min_uV = mVolts * 1000, \
571 .enable_time = turnon_delay, \
572 .of_map_mode = NULL, \
573 }, \
574 }
575
576#define TWL6032_ADJUSTABLE_SMPS(label, offset) \
577static const struct twlreg_info TWLSMPS_INFO_##label = { \
578 .base = offset, \
579 .min_mV = 600, \
580 .desc = { \
581 .name = #label, \
582 .id = TWL6032_REG_##label, \
583 .n_voltages = 63, \
584 .ops = &twlsmps_ops, \
585 .type = REGULATOR_VOLTAGE, \
586 .owner = THIS_MODULE, \
587 }, \
588 }
589
590/* VUSBCP is managed *only* by the USB subchip */
591/* 6030 REG with base as PMC Slave Misc : 0x0030 */
592/* Turnon-delay and remap configuration values for 6030 are not
593 verified since the specification is not public */
594TWL6030_ADJUSTABLE_SMPS(VDD1);
595TWL6030_ADJUSTABLE_SMPS(VDD2);
596TWL6030_ADJUSTABLE_SMPS(VDD3);
597TWL6030_ADJUSTABLE_LDO(VAUX1_6030, 0x54, 1000);
598TWL6030_ADJUSTABLE_LDO(VAUX2_6030, 0x58, 1000);
599TWL6030_ADJUSTABLE_LDO(VAUX3_6030, 0x5c, 1000);
600TWL6030_ADJUSTABLE_LDO(VMMC, 0x68, 1000);
601TWL6030_ADJUSTABLE_LDO(VPP, 0x6c, 1000);
602TWL6030_ADJUSTABLE_LDO(VUSIM, 0x74, 1000);
603/* 6025 are renamed compared to 6030 versions */
604TWL6032_ADJUSTABLE_LDO(LDO2, 0x54, 1000);
605TWL6032_ADJUSTABLE_LDO(LDO4, 0x58, 1000);
606TWL6032_ADJUSTABLE_LDO(LDO3, 0x5c, 1000);
607TWL6032_ADJUSTABLE_LDO(LDO5, 0x68, 1000);
608TWL6032_ADJUSTABLE_LDO(LDO1, 0x6c, 1000);
609TWL6032_ADJUSTABLE_LDO(LDO7, 0x74, 1000);
610TWL6032_ADJUSTABLE_LDO(LDO6, 0x60, 1000);
611TWL6032_ADJUSTABLE_LDO(LDOLN, 0x64, 1000);
612TWL6032_ADJUSTABLE_LDO(LDOUSB, 0x70, 1000);
613TWL6030_FIXED_LDO(VANA, 0x50, 2100, 0);
614TWL6030_FIXED_LDO(VCXIO, 0x60, 1800, 0);
615TWL6030_FIXED_LDO(VDAC, 0x64, 1800, 0);
616TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 0);
617TWL6030_FIXED_LDO(V1V8, 0x16, 1800, 0);
618TWL6030_FIXED_LDO(V2V1, 0x1c, 2100, 0);
619TWL6032_ADJUSTABLE_SMPS(SMPS3, 0x34);
620TWL6032_ADJUSTABLE_SMPS(SMPS4, 0x10);
621TWL6032_ADJUSTABLE_SMPS(VIO, 0x16);
622
623static u8 twl_get_smps_offset(void)
624{
625 u8 value;
626
627 twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
628 TWL6030_SMPS_OFFSET);
629 return value;
630}
631
632static u8 twl_get_smps_mult(void)
633{
634 u8 value;
635
636 twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
637 TWL6030_SMPS_MULT);
638 return value;
639}
640
641#define TWL_OF_MATCH(comp, family, label) \
642 { \
643 .compatible = comp, \
644 .data = &family##_INFO_##label, \
645 }
646
647#define TWL6030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6030, label)
648#define TWL6032_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6032, label)
649#define TWLFIXED_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLFIXED, label)
650#define TWLSMPS_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLSMPS, label)
651
652static const struct of_device_id twl_of_match[] = {
653 TWL6030_OF_MATCH("ti,twl6030-vdd1", VDD1),
654 TWL6030_OF_MATCH("ti,twl6030-vdd2", VDD2),
655 TWL6030_OF_MATCH("ti,twl6030-vdd3", VDD3),
656 TWL6030_OF_MATCH("ti,twl6030-vaux1", VAUX1_6030),
657 TWL6030_OF_MATCH("ti,twl6030-vaux2", VAUX2_6030),
658 TWL6030_OF_MATCH("ti,twl6030-vaux3", VAUX3_6030),
659 TWL6030_OF_MATCH("ti,twl6030-vmmc", VMMC),
660 TWL6030_OF_MATCH("ti,twl6030-vpp", VPP),
661 TWL6030_OF_MATCH("ti,twl6030-vusim", VUSIM),
662 TWL6032_OF_MATCH("ti,twl6032-ldo2", LDO2),
663 TWL6032_OF_MATCH("ti,twl6032-ldo4", LDO4),
664 TWL6032_OF_MATCH("ti,twl6032-ldo3", LDO3),
665 TWL6032_OF_MATCH("ti,twl6032-ldo5", LDO5),
666 TWL6032_OF_MATCH("ti,twl6032-ldo1", LDO1),
667 TWL6032_OF_MATCH("ti,twl6032-ldo7", LDO7),
668 TWL6032_OF_MATCH("ti,twl6032-ldo6", LDO6),
669 TWL6032_OF_MATCH("ti,twl6032-ldoln", LDOLN),
670 TWL6032_OF_MATCH("ti,twl6032-ldousb", LDOUSB),
671 TWLFIXED_OF_MATCH("ti,twl6030-vana", VANA),
672 TWLFIXED_OF_MATCH("ti,twl6030-vcxio", VCXIO),
673 TWLFIXED_OF_MATCH("ti,twl6030-vdac", VDAC),
674 TWLFIXED_OF_MATCH("ti,twl6030-vusb", VUSB),
675 TWLFIXED_OF_MATCH("ti,twl6030-v1v8", V1V8),
676 TWLFIXED_OF_MATCH("ti,twl6030-v2v1", V2V1),
677 TWLSMPS_OF_MATCH("ti,twl6032-smps3", SMPS3),
678 TWLSMPS_OF_MATCH("ti,twl6032-smps4", SMPS4),
679 TWLSMPS_OF_MATCH("ti,twl6032-vio", VIO),
680 {},
681};
682MODULE_DEVICE_TABLE(of, twl_of_match);
683
684static int twlreg_probe(struct platform_device *pdev)
685{
686 int id;
687 struct twlreg_info *info;
688 const struct twlreg_info *template;
689 struct regulator_init_data *initdata;
690 struct regulation_constraints *c;
691 struct regulator_dev *rdev;
692 const struct of_device_id *match;
693 struct regulator_config config = { };
694
695 match = of_match_device(twl_of_match, &pdev->dev);
696 if (!match)
697 return -ENODEV;
698
699 template = match->data;
700 if (!template)
701 return -ENODEV;
702
703 id = template->desc.id;
704 initdata = of_get_regulator_init_data(&pdev->dev, pdev->dev.of_node,
705 &template->desc);
706 if (!initdata)
707 return -EINVAL;
708
709 info = devm_kmemdup(&pdev->dev, template, sizeof(*info), GFP_KERNEL);
710 if (!info)
711 return -ENOMEM;
712
713 /* Constrain board-specific capabilities according to what
714 * this driver and the chip itself can actually do.
715 */
716 c = &initdata->constraints;
717 c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY;
718 c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE
719 | REGULATOR_CHANGE_MODE
720 | REGULATOR_CHANGE_STATUS;
721
722 switch (id) {
723 case TWL6032_REG_SMPS3:
724 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS3)
725 info->flags |= SMPS_EXTENDED_EN;
726 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS3)
727 info->flags |= SMPS_OFFSET_EN;
728 break;
729 case TWL6032_REG_SMPS4:
730 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS4)
731 info->flags |= SMPS_EXTENDED_EN;
732 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS4)
733 info->flags |= SMPS_OFFSET_EN;
734 break;
735 case TWL6032_REG_VIO:
736 if (twl_get_smps_mult() & SMPS_MULTOFFSET_VIO)
737 info->flags |= SMPS_EXTENDED_EN;
738 if (twl_get_smps_offset() & SMPS_MULTOFFSET_VIO)
739 info->flags |= SMPS_OFFSET_EN;
740 break;
741 }
742
743 config.dev = &pdev->dev;
744 config.init_data = initdata;
745 config.driver_data = info;
746 config.of_node = pdev->dev.of_node;
747
748 rdev = devm_regulator_register(&pdev->dev, &info->desc, &config);
749 if (IS_ERR(rdev)) {
750 dev_err(&pdev->dev, "can't register %s, %ld\n",
751 info->desc.name, PTR_ERR(rdev));
752 return PTR_ERR(rdev);
753 }
754 platform_set_drvdata(pdev, rdev);
755
756 /* NOTE: many regulators support short-circuit IRQs (presentable
757 * as REGULATOR_OVER_CURRENT notifications?) configured via:
758 * - SC_CONFIG
759 * - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4)
760 * - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2)
761 * - IT_CONFIG
762 */
763
764 return 0;
765}
766
767MODULE_ALIAS("platform:twl6030_reg");
768
769static struct platform_driver twlreg_driver = {
770 .probe = twlreg_probe,
771 /* NOTE: short name, to work around driver model truncation of
772 * "twl_regulator.12" (and friends) to "twl_regulator.1".
773 */
774 .driver = {
775 .name = "twl6030_reg",
776 .of_match_table = of_match_ptr(twl_of_match),
777 },
778};
779
780static int __init twlreg_init(void)
781{
782 return platform_driver_register(&twlreg_driver);
783}
784subsys_initcall(twlreg_init);
785
786static void __exit twlreg_exit(void)
787{
788 platform_driver_unregister(&twlreg_driver);
789}
790module_exit(twlreg_exit)
791
792MODULE_DESCRIPTION("TWL6030 regulator driver");
793MODULE_LICENSE("GPL");