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/mfd/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 u8 flags;
35
36 /* used by regulator core */
37 struct regulator_desc desc;
38
39 /* chip specific features */
40 unsigned long features;
41
42 /* data passed from board for external get/set voltage */
43 void *data;
44};
45
46
47/* LDO control registers ... offset is from the base of its register bank.
48 * The first three registers of all power resource banks help hardware to
49 * manage the various resource groups.
50 */
51/* Common offset in TWL4030/6030 */
52#define VREG_GRP 0
53/* TWL6030 register offsets */
54#define VREG_TRANS 1
55#define VREG_STATE 2
56#define VREG_VOLTAGE 3
57#define VREG_VOLTAGE_SMPS 4
58/* TWL6030 Misc register offsets */
59#define VREG_BC_ALL 1
60#define VREG_BC_REF 2
61#define VREG_BC_PROC 3
62#define VREG_BC_CLK_RST 4
63
64/* TWL6030 LDO register values for CFG_STATE */
65#define TWL6030_CFG_STATE_OFF 0x00
66#define TWL6030_CFG_STATE_ON 0x01
67#define TWL6030_CFG_STATE_OFF2 0x02
68#define TWL6030_CFG_STATE_SLEEP 0x03
69#define TWL6030_CFG_STATE_GRP_SHIFT 5
70#define TWL6030_CFG_STATE_APP_SHIFT 2
71#define TWL6030_CFG_STATE_APP_MASK (0x03 << TWL6030_CFG_STATE_APP_SHIFT)
72#define TWL6030_CFG_STATE_APP(v) (((v) & TWL6030_CFG_STATE_APP_MASK) >>\
73 TWL6030_CFG_STATE_APP_SHIFT)
74
75/* Flags for SMPS Voltage reading */
76#define SMPS_OFFSET_EN BIT(0)
77#define SMPS_EXTENDED_EN BIT(1)
78
79/* twl6032 SMPS EPROM values */
80#define TWL6030_SMPS_OFFSET 0xB0
81#define TWL6030_SMPS_MULT 0xB3
82#define SMPS_MULTOFFSET_SMPS4 BIT(0)
83#define SMPS_MULTOFFSET_VIO BIT(1)
84#define SMPS_MULTOFFSET_SMPS3 BIT(6)
85
86static inline int
87twlreg_read(struct twlreg_info *info, unsigned slave_subgp, unsigned offset)
88{
89 u8 value;
90 int status;
91
92 status = twl_i2c_read_u8(slave_subgp,
93 &value, info->base + offset);
94 return (status < 0) ? status : value;
95}
96
97static inline int
98twlreg_write(struct twlreg_info *info, unsigned slave_subgp, unsigned offset,
99 u8 value)
100{
101 return twl_i2c_write_u8(slave_subgp,
102 value, info->base + offset);
103}
104
105/* generic power resource operations, which work on all regulators */
106static int twlreg_grp(struct regulator_dev *rdev)
107{
108 return twlreg_read(rdev_get_drvdata(rdev), TWL_MODULE_PM_RECEIVER,
109 VREG_GRP);
110}
111
112/*
113 * Enable/disable regulators by joining/leaving the P1 (processor) group.
114 * We assume nobody else is updating the DEV_GRP registers.
115 */
116/* definition for 6030 family */
117#define P3_GRP_6030 BIT(2) /* secondary processor, modem, etc */
118#define P2_GRP_6030 BIT(1) /* "peripherals" */
119#define P1_GRP_6030 BIT(0) /* CPU/Linux */
120
121static int twl6030reg_is_enabled(struct regulator_dev *rdev)
122{
123 struct twlreg_info *info = rdev_get_drvdata(rdev);
124 int grp = 0, val;
125
126 if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS))) {
127 grp = twlreg_grp(rdev);
128 if (grp < 0)
129 return grp;
130 grp &= P1_GRP_6030;
131 } else {
132 grp = 1;
133 }
134
135 val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
136 val = TWL6030_CFG_STATE_APP(val);
137
138 return grp && (val == TWL6030_CFG_STATE_ON);
139}
140
141#define PB_I2C_BUSY BIT(0)
142#define PB_I2C_BWEN BIT(1)
143
144
145static int twl6030reg_enable(struct regulator_dev *rdev)
146{
147 struct twlreg_info *info = rdev_get_drvdata(rdev);
148 int grp = 0;
149 int ret;
150
151 if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
152 grp = twlreg_grp(rdev);
153 if (grp < 0)
154 return grp;
155
156 ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
157 grp << TWL6030_CFG_STATE_GRP_SHIFT |
158 TWL6030_CFG_STATE_ON);
159 return ret;
160}
161
162static int twl6030reg_disable(struct regulator_dev *rdev)
163{
164 struct twlreg_info *info = rdev_get_drvdata(rdev);
165 int grp = 0;
166 int ret;
167
168 if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
169 grp = P1_GRP_6030 | P2_GRP_6030 | P3_GRP_6030;
170
171 /* For 6030, set the off state for all grps enabled */
172 ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
173 (grp) << TWL6030_CFG_STATE_GRP_SHIFT |
174 TWL6030_CFG_STATE_OFF);
175
176 return ret;
177}
178
179static int twl6030reg_get_status(struct regulator_dev *rdev)
180{
181 struct twlreg_info *info = rdev_get_drvdata(rdev);
182 int val;
183
184 val = twlreg_grp(rdev);
185 if (val < 0)
186 return val;
187
188 val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
189
190 switch (TWL6030_CFG_STATE_APP(val)) {
191 case TWL6030_CFG_STATE_ON:
192 return REGULATOR_STATUS_NORMAL;
193
194 case TWL6030_CFG_STATE_SLEEP:
195 return REGULATOR_STATUS_STANDBY;
196
197 case TWL6030_CFG_STATE_OFF:
198 case TWL6030_CFG_STATE_OFF2:
199 default:
200 break;
201 }
202
203 return REGULATOR_STATUS_OFF;
204}
205
206static int twl6030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
207{
208 struct twlreg_info *info = rdev_get_drvdata(rdev);
209 int grp = 0;
210 int val;
211
212 if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
213 grp = twlreg_grp(rdev);
214
215 if (grp < 0)
216 return grp;
217
218 /* Compose the state register settings */
219 val = grp << TWL6030_CFG_STATE_GRP_SHIFT;
220 /* We can only set the mode through state machine commands... */
221 switch (mode) {
222 case REGULATOR_MODE_NORMAL:
223 val |= TWL6030_CFG_STATE_ON;
224 break;
225 case REGULATOR_MODE_STANDBY:
226 val |= TWL6030_CFG_STATE_SLEEP;
227 break;
228
229 default:
230 return -EINVAL;
231 }
232
233 return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, val);
234}
235
236static int twl6030coresmps_set_voltage(struct regulator_dev *rdev, int min_uV,
237 int max_uV, unsigned *selector)
238{
239 return -ENODEV;
240}
241
242static int twl6030coresmps_get_voltage(struct regulator_dev *rdev)
243{
244 return -ENODEV;
245}
246
247static const struct regulator_ops twl6030coresmps_ops = {
248 .set_voltage = twl6030coresmps_set_voltage,
249 .get_voltage = twl6030coresmps_get_voltage,
250};
251
252static int
253twl6030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
254{
255 struct twlreg_info *info = rdev_get_drvdata(rdev);
256
257 return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE,
258 selector);
259}
260
261static int twl6030ldo_get_voltage_sel(struct regulator_dev *rdev)
262{
263 struct twlreg_info *info = rdev_get_drvdata(rdev);
264 int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE);
265
266 return vsel;
267}
268
269static const struct regulator_ops twl6030ldo_ops = {
270 .list_voltage = regulator_list_voltage_linear_range,
271
272 .set_voltage_sel = twl6030ldo_set_voltage_sel,
273 .get_voltage_sel = twl6030ldo_get_voltage_sel,
274
275 .enable = twl6030reg_enable,
276 .disable = twl6030reg_disable,
277 .is_enabled = twl6030reg_is_enabled,
278
279 .set_mode = twl6030reg_set_mode,
280
281 .get_status = twl6030reg_get_status,
282};
283
284static const struct regulator_ops twl6030fixed_ops = {
285 .list_voltage = regulator_list_voltage_linear,
286
287 .enable = twl6030reg_enable,
288 .disable = twl6030reg_disable,
289 .is_enabled = twl6030reg_is_enabled,
290
291 .set_mode = twl6030reg_set_mode,
292
293 .get_status = twl6030reg_get_status,
294};
295
296/*
297 * SMPS status and control
298 */
299
300static int twl6030smps_list_voltage(struct regulator_dev *rdev, unsigned index)
301{
302 struct twlreg_info *info = rdev_get_drvdata(rdev);
303
304 int voltage = 0;
305
306 switch (info->flags) {
307 case SMPS_OFFSET_EN:
308 voltage = 100000;
309 /* fall through */
310 case 0:
311 switch (index) {
312 case 0:
313 voltage = 0;
314 break;
315 case 58:
316 voltage = 1350 * 1000;
317 break;
318 case 59:
319 voltage = 1500 * 1000;
320 break;
321 case 60:
322 voltage = 1800 * 1000;
323 break;
324 case 61:
325 voltage = 1900 * 1000;
326 break;
327 case 62:
328 voltage = 2100 * 1000;
329 break;
330 default:
331 voltage += (600000 + (12500 * (index - 1)));
332 }
333 break;
334 case SMPS_EXTENDED_EN:
335 switch (index) {
336 case 0:
337 voltage = 0;
338 break;
339 case 58:
340 voltage = 2084 * 1000;
341 break;
342 case 59:
343 voltage = 2315 * 1000;
344 break;
345 case 60:
346 voltage = 2778 * 1000;
347 break;
348 case 61:
349 voltage = 2932 * 1000;
350 break;
351 case 62:
352 voltage = 3241 * 1000;
353 break;
354 default:
355 voltage = (1852000 + (38600 * (index - 1)));
356 }
357 break;
358 case SMPS_OFFSET_EN | SMPS_EXTENDED_EN:
359 switch (index) {
360 case 0:
361 voltage = 0;
362 break;
363 case 58:
364 voltage = 4167 * 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 = (2161000 + (38600 * (index - 1)));
380 }
381 break;
382 }
383
384 return voltage;
385}
386
387static int twl6030smps_map_voltage(struct regulator_dev *rdev, int min_uV,
388 int max_uV)
389{
390 struct twlreg_info *info = rdev_get_drvdata(rdev);
391 int vsel = 0;
392
393 switch (info->flags) {
394 case 0:
395 if (min_uV == 0)
396 vsel = 0;
397 else if ((min_uV >= 600000) && (min_uV <= 1300000)) {
398 vsel = DIV_ROUND_UP(min_uV - 600000, 12500);
399 vsel++;
400 }
401 /* Values 1..57 for vsel are linear and can be calculated
402 * values 58..62 are non linear.
403 */
404 else if ((min_uV > 1900000) && (min_uV <= 2100000))
405 vsel = 62;
406 else if ((min_uV > 1800000) && (min_uV <= 1900000))
407 vsel = 61;
408 else if ((min_uV > 1500000) && (min_uV <= 1800000))
409 vsel = 60;
410 else if ((min_uV > 1350000) && (min_uV <= 1500000))
411 vsel = 59;
412 else if ((min_uV > 1300000) && (min_uV <= 1350000))
413 vsel = 58;
414 else
415 return -EINVAL;
416 break;
417 case SMPS_OFFSET_EN:
418 if (min_uV == 0)
419 vsel = 0;
420 else if ((min_uV >= 700000) && (min_uV <= 1420000)) {
421 vsel = DIV_ROUND_UP(min_uV - 700000, 12500);
422 vsel++;
423 }
424 /* Values 1..57 for vsel are linear and can be calculated
425 * values 58..62 are non linear.
426 */
427 else if ((min_uV > 1900000) && (min_uV <= 2100000))
428 vsel = 62;
429 else if ((min_uV > 1800000) && (min_uV <= 1900000))
430 vsel = 61;
431 else if ((min_uV > 1500000) && (min_uV <= 1800000))
432 vsel = 60;
433 else if ((min_uV > 1350000) && (min_uV <= 1500000))
434 vsel = 59;
435 else
436 return -EINVAL;
437 break;
438 case SMPS_EXTENDED_EN:
439 if (min_uV == 0) {
440 vsel = 0;
441 } else if ((min_uV >= 1852000) && (max_uV <= 4013600)) {
442 vsel = DIV_ROUND_UP(min_uV - 1852000, 38600);
443 vsel++;
444 }
445 break;
446 case SMPS_OFFSET_EN|SMPS_EXTENDED_EN:
447 if (min_uV == 0) {
448 vsel = 0;
449 } else if ((min_uV >= 2161000) && (min_uV <= 4321000)) {
450 vsel = DIV_ROUND_UP(min_uV - 2161000, 38600);
451 vsel++;
452 }
453 break;
454 }
455
456 return vsel;
457}
458
459static int twl6030smps_set_voltage_sel(struct regulator_dev *rdev,
460 unsigned int selector)
461{
462 struct twlreg_info *info = rdev_get_drvdata(rdev);
463
464 return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS,
465 selector);
466}
467
468static int twl6030smps_get_voltage_sel(struct regulator_dev *rdev)
469{
470 struct twlreg_info *info = rdev_get_drvdata(rdev);
471
472 return twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS);
473}
474
475static const struct regulator_ops twlsmps_ops = {
476 .list_voltage = twl6030smps_list_voltage,
477 .map_voltage = twl6030smps_map_voltage,
478
479 .set_voltage_sel = twl6030smps_set_voltage_sel,
480 .get_voltage_sel = twl6030smps_get_voltage_sel,
481
482 .enable = twl6030reg_enable,
483 .disable = twl6030reg_disable,
484 .is_enabled = twl6030reg_is_enabled,
485
486 .set_mode = twl6030reg_set_mode,
487
488 .get_status = twl6030reg_get_status,
489};
490
491/*----------------------------------------------------------------------*/
492static const struct regulator_linear_range twl6030ldo_linear_range[] = {
493 REGULATOR_LINEAR_RANGE(0, 0, 0, 0),
494 REGULATOR_LINEAR_RANGE(1000000, 1, 24, 100000),
495 REGULATOR_LINEAR_RANGE(2750000, 31, 31, 0),
496};
497
498#define TWL6030_ADJUSTABLE_SMPS(label) \
499static const struct twlreg_info TWL6030_INFO_##label = { \
500 .desc = { \
501 .name = #label, \
502 .id = TWL6030_REG_##label, \
503 .ops = &twl6030coresmps_ops, \
504 .type = REGULATOR_VOLTAGE, \
505 .owner = THIS_MODULE, \
506 }, \
507 }
508
509#define TWL6030_ADJUSTABLE_LDO(label, offset) \
510static const struct twlreg_info TWL6030_INFO_##label = { \
511 .base = offset, \
512 .desc = { \
513 .name = #label, \
514 .id = TWL6030_REG_##label, \
515 .n_voltages = 32, \
516 .linear_ranges = twl6030ldo_linear_range, \
517 .n_linear_ranges = ARRAY_SIZE(twl6030ldo_linear_range), \
518 .ops = &twl6030ldo_ops, \
519 .type = REGULATOR_VOLTAGE, \
520 .owner = THIS_MODULE, \
521 }, \
522 }
523
524#define TWL6032_ADJUSTABLE_LDO(label, offset) \
525static const struct twlreg_info TWL6032_INFO_##label = { \
526 .base = offset, \
527 .desc = { \
528 .name = #label, \
529 .id = TWL6032_REG_##label, \
530 .n_voltages = 32, \
531 .linear_ranges = twl6030ldo_linear_range, \
532 .n_linear_ranges = ARRAY_SIZE(twl6030ldo_linear_range), \
533 .ops = &twl6030ldo_ops, \
534 .type = REGULATOR_VOLTAGE, \
535 .owner = THIS_MODULE, \
536 }, \
537 }
538
539#define TWL6030_FIXED_LDO(label, offset, mVolts, turnon_delay) \
540static const struct twlreg_info TWLFIXED_INFO_##label = { \
541 .base = offset, \
542 .id = 0, \
543 .desc = { \
544 .name = #label, \
545 .id = TWL6030##_REG_##label, \
546 .n_voltages = 1, \
547 .ops = &twl6030fixed_ops, \
548 .type = REGULATOR_VOLTAGE, \
549 .owner = THIS_MODULE, \
550 .min_uV = mVolts * 1000, \
551 .enable_time = turnon_delay, \
552 .of_map_mode = NULL, \
553 }, \
554 }
555
556#define TWL6032_ADJUSTABLE_SMPS(label, offset) \
557static const struct twlreg_info TWLSMPS_INFO_##label = { \
558 .base = offset, \
559 .desc = { \
560 .name = #label, \
561 .id = TWL6032_REG_##label, \
562 .n_voltages = 63, \
563 .ops = &twlsmps_ops, \
564 .type = REGULATOR_VOLTAGE, \
565 .owner = THIS_MODULE, \
566 }, \
567 }
568
569/* VUSBCP is managed *only* by the USB subchip */
570/* 6030 REG with base as PMC Slave Misc : 0x0030 */
571/* Turnon-delay and remap configuration values for 6030 are not
572 verified since the specification is not public */
573TWL6030_ADJUSTABLE_SMPS(VDD1);
574TWL6030_ADJUSTABLE_SMPS(VDD2);
575TWL6030_ADJUSTABLE_SMPS(VDD3);
576TWL6030_ADJUSTABLE_LDO(VAUX1_6030, 0x54);
577TWL6030_ADJUSTABLE_LDO(VAUX2_6030, 0x58);
578TWL6030_ADJUSTABLE_LDO(VAUX3_6030, 0x5c);
579TWL6030_ADJUSTABLE_LDO(VMMC, 0x68);
580TWL6030_ADJUSTABLE_LDO(VPP, 0x6c);
581TWL6030_ADJUSTABLE_LDO(VUSIM, 0x74);
582/* 6025 are renamed compared to 6030 versions */
583TWL6032_ADJUSTABLE_LDO(LDO2, 0x54);
584TWL6032_ADJUSTABLE_LDO(LDO4, 0x58);
585TWL6032_ADJUSTABLE_LDO(LDO3, 0x5c);
586TWL6032_ADJUSTABLE_LDO(LDO5, 0x68);
587TWL6032_ADJUSTABLE_LDO(LDO1, 0x6c);
588TWL6032_ADJUSTABLE_LDO(LDO7, 0x74);
589TWL6032_ADJUSTABLE_LDO(LDO6, 0x60);
590TWL6032_ADJUSTABLE_LDO(LDOLN, 0x64);
591TWL6032_ADJUSTABLE_LDO(LDOUSB, 0x70);
592TWL6030_FIXED_LDO(VANA, 0x50, 2100, 0);
593TWL6030_FIXED_LDO(VCXIO, 0x60, 1800, 0);
594TWL6030_FIXED_LDO(VDAC, 0x64, 1800, 0);
595TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 0);
596TWL6030_FIXED_LDO(V1V8, 0x16, 1800, 0);
597TWL6030_FIXED_LDO(V2V1, 0x1c, 2100, 0);
598TWL6032_ADJUSTABLE_SMPS(SMPS3, 0x34);
599TWL6032_ADJUSTABLE_SMPS(SMPS4, 0x10);
600TWL6032_ADJUSTABLE_SMPS(VIO, 0x16);
601
602static u8 twl_get_smps_offset(void)
603{
604 u8 value;
605
606 twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
607 TWL6030_SMPS_OFFSET);
608 return value;
609}
610
611static u8 twl_get_smps_mult(void)
612{
613 u8 value;
614
615 twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
616 TWL6030_SMPS_MULT);
617 return value;
618}
619
620#define TWL_OF_MATCH(comp, family, label) \
621 { \
622 .compatible = comp, \
623 .data = &family##_INFO_##label, \
624 }
625
626#define TWL6030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6030, label)
627#define TWL6032_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6032, label)
628#define TWLFIXED_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLFIXED, label)
629#define TWLSMPS_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLSMPS, label)
630
631static const struct of_device_id twl_of_match[] = {
632 TWL6030_OF_MATCH("ti,twl6030-vdd1", VDD1),
633 TWL6030_OF_MATCH("ti,twl6030-vdd2", VDD2),
634 TWL6030_OF_MATCH("ti,twl6030-vdd3", VDD3),
635 TWL6030_OF_MATCH("ti,twl6030-vaux1", VAUX1_6030),
636 TWL6030_OF_MATCH("ti,twl6030-vaux2", VAUX2_6030),
637 TWL6030_OF_MATCH("ti,twl6030-vaux3", VAUX3_6030),
638 TWL6030_OF_MATCH("ti,twl6030-vmmc", VMMC),
639 TWL6030_OF_MATCH("ti,twl6030-vpp", VPP),
640 TWL6030_OF_MATCH("ti,twl6030-vusim", VUSIM),
641 TWL6032_OF_MATCH("ti,twl6032-ldo2", LDO2),
642 TWL6032_OF_MATCH("ti,twl6032-ldo4", LDO4),
643 TWL6032_OF_MATCH("ti,twl6032-ldo3", LDO3),
644 TWL6032_OF_MATCH("ti,twl6032-ldo5", LDO5),
645 TWL6032_OF_MATCH("ti,twl6032-ldo1", LDO1),
646 TWL6032_OF_MATCH("ti,twl6032-ldo7", LDO7),
647 TWL6032_OF_MATCH("ti,twl6032-ldo6", LDO6),
648 TWL6032_OF_MATCH("ti,twl6032-ldoln", LDOLN),
649 TWL6032_OF_MATCH("ti,twl6032-ldousb", LDOUSB),
650 TWLFIXED_OF_MATCH("ti,twl6030-vana", VANA),
651 TWLFIXED_OF_MATCH("ti,twl6030-vcxio", VCXIO),
652 TWLFIXED_OF_MATCH("ti,twl6030-vdac", VDAC),
653 TWLFIXED_OF_MATCH("ti,twl6030-vusb", VUSB),
654 TWLFIXED_OF_MATCH("ti,twl6030-v1v8", V1V8),
655 TWLFIXED_OF_MATCH("ti,twl6030-v2v1", V2V1),
656 TWLSMPS_OF_MATCH("ti,twl6032-smps3", SMPS3),
657 TWLSMPS_OF_MATCH("ti,twl6032-smps4", SMPS4),
658 TWLSMPS_OF_MATCH("ti,twl6032-vio", VIO),
659 {},
660};
661MODULE_DEVICE_TABLE(of, twl_of_match);
662
663static int twlreg_probe(struct platform_device *pdev)
664{
665 int id;
666 struct twlreg_info *info;
667 const struct twlreg_info *template;
668 struct regulator_init_data *initdata;
669 struct regulation_constraints *c;
670 struct regulator_dev *rdev;
671 struct regulator_config config = { };
672
673 template = of_device_get_match_data(&pdev->dev);
674 if (!template)
675 return -ENODEV;
676
677 id = template->desc.id;
678 initdata = of_get_regulator_init_data(&pdev->dev, pdev->dev.of_node,
679 &template->desc);
680 if (!initdata)
681 return -EINVAL;
682
683 info = devm_kmemdup(&pdev->dev, template, sizeof(*info), GFP_KERNEL);
684 if (!info)
685 return -ENOMEM;
686
687 /* Constrain board-specific capabilities according to what
688 * this driver and the chip itself can actually do.
689 */
690 c = &initdata->constraints;
691 c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY;
692 c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE
693 | REGULATOR_CHANGE_MODE
694 | REGULATOR_CHANGE_STATUS;
695
696 switch (id) {
697 case TWL6032_REG_SMPS3:
698 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS3)
699 info->flags |= SMPS_EXTENDED_EN;
700 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS3)
701 info->flags |= SMPS_OFFSET_EN;
702 break;
703 case TWL6032_REG_SMPS4:
704 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS4)
705 info->flags |= SMPS_EXTENDED_EN;
706 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS4)
707 info->flags |= SMPS_OFFSET_EN;
708 break;
709 case TWL6032_REG_VIO:
710 if (twl_get_smps_mult() & SMPS_MULTOFFSET_VIO)
711 info->flags |= SMPS_EXTENDED_EN;
712 if (twl_get_smps_offset() & SMPS_MULTOFFSET_VIO)
713 info->flags |= SMPS_OFFSET_EN;
714 break;
715 }
716
717 config.dev = &pdev->dev;
718 config.init_data = initdata;
719 config.driver_data = info;
720 config.of_node = pdev->dev.of_node;
721
722 rdev = devm_regulator_register(&pdev->dev, &info->desc, &config);
723 if (IS_ERR(rdev)) {
724 dev_err(&pdev->dev, "can't register %s, %ld\n",
725 info->desc.name, PTR_ERR(rdev));
726 return PTR_ERR(rdev);
727 }
728 platform_set_drvdata(pdev, rdev);
729
730 /* NOTE: many regulators support short-circuit IRQs (presentable
731 * as REGULATOR_OVER_CURRENT notifications?) configured via:
732 * - SC_CONFIG
733 * - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4)
734 * - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2)
735 * - IT_CONFIG
736 */
737
738 return 0;
739}
740
741MODULE_ALIAS("platform:twl6030_reg");
742
743static struct platform_driver twlreg_driver = {
744 .probe = twlreg_probe,
745 /* NOTE: short name, to work around driver model truncation of
746 * "twl_regulator.12" (and friends) to "twl_regulator.1".
747 */
748 .driver = {
749 .name = "twl6030_reg",
750 .of_match_table = of_match_ptr(twl_of_match),
751 },
752};
753
754static int __init twlreg_init(void)
755{
756 return platform_driver_register(&twlreg_driver);
757}
758subsys_initcall(twlreg_init);
759
760static void __exit twlreg_exit(void)
761{
762 platform_driver_unregister(&twlreg_driver);
763}
764module_exit(twlreg_exit)
765
766MODULE_DESCRIPTION("TWL6030 regulator driver");
767MODULE_LICENSE("GPL");
768