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Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
[linux-block.git] / drivers / regulator / da9063-regulator.c
CommitLineData
5de219cc
WS		 1// SPDX-License-Identifier: GPL-2.0+
2//
3// Regulator driver for DA9063 PMIC series
4//
5// Copyright 2012 Dialog Semiconductors Ltd.
6// Copyright 2013 Philipp Zabel, Pengutronix
7//
8// Author: Krystian Garbaciak <krystian.garbaciak@diasemi.com>
ebf6dad0 9
69ca3e58
KG		 10#include <linux/kernel.h>
11#include <linux/module.h>
12#include <linux/init.h>
13#include <linux/err.h>
14#include <linux/slab.h>
15#include <linux/of.h>
16#include <linux/platform_device.h>
17#include <linux/regmap.h>
18#include <linux/regulator/driver.h>
19#include <linux/regulator/machine.h>
20#include <linux/regulator/of_regulator.h>
21#include <linux/mfd/da9063/core.h>
69ca3e58
KG		 22#include <linux/mfd/da9063/registers.h>
23
24
25/* Definition for registering regmap bit fields using a mask */
26#define BFIELD(_reg, _mask) \
27 REG_FIELD(_reg, __builtin_ffs((int)_mask) - 1, \
28 sizeof(unsigned int) * 8 - __builtin_clz((_mask)) - 1)
29
824bd1be
WS		 30/* DA9063 and DA9063L regulator IDs */
31enum {
32 /* BUCKs */
33 DA9063_ID_BCORE1,
34 DA9063_ID_BCORE2,
35 DA9063_ID_BPRO,
36 DA9063_ID_BMEM,
37 DA9063_ID_BIO,
38 DA9063_ID_BPERI,
39
40 /* BCORE1 and BCORE2 in merged mode */
41 DA9063_ID_BCORES_MERGED,
42 /* BMEM and BIO in merged mode */
43 DA9063_ID_BMEM_BIO_MERGED,
44 /* When two BUCKs are merged, they cannot be reused separately */
45
46 /* LDOs on both DA9063 and DA9063L */
47 DA9063_ID_LDO3,
48 DA9063_ID_LDO7,
49 DA9063_ID_LDO8,
50 DA9063_ID_LDO9,
51 DA9063_ID_LDO11,
52
53 /* DA9063-only LDOs */
54 DA9063_ID_LDO1,
55 DA9063_ID_LDO2,
56 DA9063_ID_LDO4,
57 DA9063_ID_LDO5,
58 DA9063_ID_LDO6,
59 DA9063_ID_LDO10,
60};
61
62/* Old regulator platform data */
63struct da9063_regulator_data {
64 int id;
65 struct regulator_init_data *initdata;
66};
67
68struct da9063_regulators_pdata {
a33b25f5 69 unsigned int n_regulators;
824bd1be
WS		 70 struct da9063_regulator_data *regulator_data;
71};
72
69ca3e58
KG		 73/* Regulator capabilities and registers description */
74struct da9063_regulator_info {
75 struct regulator_desc desc;
76
69ca3e58
KG		 77 /* DA9063 main register fields */
78 struct reg_field mode; /* buck mode of operation */
79 struct reg_field suspend;
80 struct reg_field sleep;
81 struct reg_field suspend_sleep;
82 unsigned int suspend_vsel_reg;
69ca3e58
KG		 83
84 /* DA9063 event detection bit */
85 struct reg_field oc_event;
86};
87
88/* Macros for LDO */
89#define DA9063_LDO(chip, regl_name, min_mV, step_mV, max_mV) \
90 .desc.id = chip##_ID_##regl_name, \
91 .desc.name = __stringify(chip##_##regl_name), \
92 .desc.ops = &da9063_ldo_ops, \
93 .desc.min_uV = (min_mV) * 1000, \
94 .desc.uV_step = (step_mV) * 1000, \
ebf6dad0
ST		 95 .desc.n_voltages = (((max_mV) - (min_mV))/(step_mV) + 1 \
96 + (DA9063_V##regl_name##_BIAS)), \
69ca3e58
KG		 97 .desc.enable_reg = DA9063_REG_##regl_name##_CONT, \
98 .desc.enable_mask = DA9063_LDO_EN, \
99 .desc.vsel_reg = DA9063_REG_V##regl_name##_A, \
100 .desc.vsel_mask = DA9063_V##regl_name##_MASK, \
101 .desc.linear_min_sel = DA9063_V##regl_name##_BIAS, \
102 .sleep = BFIELD(DA9063_REG_V##regl_name##_A, DA9063_LDO_SL), \
99f75ce6 103 .suspend = BFIELD(DA9063_REG_##regl_name##_CONT, DA9063_LDO_CONF), \
69ca3e58
KG		 104 .suspend_sleep = BFIELD(DA9063_REG_V##regl_name##_B, DA9063_LDO_SL), \
105 .suspend_vsel_reg = DA9063_REG_V##regl_name##_B
106
107/* Macros for voltage DC/DC converters (BUCKs) */
5b1f537e
AL		 108#define DA9063_BUCK(chip, regl_name, min_mV, step_mV, max_mV, limits_array, \
109 creg, cmask) \
69ca3e58
KG		 110 .desc.id = chip##_ID_##regl_name, \
111 .desc.name = __stringify(chip##_##regl_name), \
112 .desc.ops = &da9063_buck_ops, \
113 .desc.min_uV = (min_mV) * 1000, \
114 .desc.uV_step = (step_mV) * 1000, \
115 .desc.n_voltages = ((max_mV) - (min_mV))/(step_mV) + 1, \
5b1f537e
AL		 116 .desc.csel_reg = (creg), \
117 .desc.csel_mask = (cmask), \
118 .desc.curr_table = limits_array, \
119 .desc.n_current_limits = ARRAY_SIZE(limits_array)
69ca3e58
KG		 120
121#define DA9063_BUCK_COMMON_FIELDS(regl_name) \
122 .desc.enable_reg = DA9063_REG_##regl_name##_CONT, \
123 .desc.enable_mask = DA9063_BUCK_EN, \
124 .desc.vsel_reg = DA9063_REG_V##regl_name##_A, \
125 .desc.vsel_mask = DA9063_VBUCK_MASK, \
126 .desc.linear_min_sel = DA9063_VBUCK_BIAS, \
127 .sleep = BFIELD(DA9063_REG_V##regl_name##_A, DA9063_BUCK_SL), \
99f75ce6 128 .suspend = BFIELD(DA9063_REG_##regl_name##_CONT, DA9063_BUCK_CONF), \
69ca3e58
KG		 129 .suspend_sleep = BFIELD(DA9063_REG_V##regl_name##_B, DA9063_BUCK_SL), \
130 .suspend_vsel_reg = DA9063_REG_V##regl_name##_B, \
131 .mode = BFIELD(DA9063_REG_##regl_name##_CFG, DA9063_BUCK_MODE_MASK)
132
133/* Defines asignment of regulators info table to chip model */
134struct da9063_dev_model {
135 const struct da9063_regulator_info *regulator_info;
a33b25f5 136 unsigned int n_regulators;
492510dd 137 enum da9063_type type;
69ca3e58
KG		 138};
139
140/* Single regulator settings */
141struct da9063_regulator {
142 struct regulator_desc desc;
143 struct regulator_dev *rdev;
144 struct da9063 *hw;
145 const struct da9063_regulator_info *info;
146
147 struct regmap_field *mode;
148 struct regmap_field *suspend;
149 struct regmap_field *sleep;
150 struct regmap_field *suspend_sleep;
69ca3e58
KG		 151};
152
153/* Encapsulates all information for the regulators driver */
154struct da9063_regulators {
a33b25f5 155 unsigned int n_regulators;
69ca3e58 156 /* Array size to be defined during init. Keep at end. */
23a653eb 157 struct da9063_regulator regulator[];
69ca3e58
KG		 158};
159
160/* BUCK modes for DA9063 */
161enum {
162 BUCK_MODE_MANUAL, /* 0 */
163 BUCK_MODE_SLEEP, /* 1 */
164 BUCK_MODE_SYNC, /* 2 */
165 BUCK_MODE_AUTO /* 3 */
166};
167
168/* Regulator operations */
169
a33b25f5
RG		 170/*
171 * Current limits array (in uA) for BCORE1, BCORE2, BPRO.
172 * Entry indexes corresponds to register values.
173 */
5b1f537e 174static const unsigned int da9063_buck_a_limits[] = {
69ca3e58
KG		 175 500000, 600000, 700000, 800000, 900000, 1000000, 1100000, 1200000,
176 1300000, 1400000, 1500000, 1600000, 1700000, 1800000, 1900000, 2000000
177};
178
a33b25f5
RG		 179/*
180 * Current limits array (in uA) for BMEM, BIO, BPERI.
181 * Entry indexes corresponds to register values.
182 */
5b1f537e 183static const unsigned int da9063_buck_b_limits[] = {
69ca3e58
KG		 184 1500000, 1600000, 1700000, 1800000, 1900000, 2000000, 2100000, 2200000,
185 2300000, 2400000, 2500000, 2600000, 2700000, 2800000, 2900000, 3000000
186};
187
a33b25f5
RG		 188/*
189 * Current limits array (in uA) for merged BCORE1 and BCORE2.
190 * Entry indexes corresponds to register values.
191 */
5b1f537e 192static const unsigned int da9063_bcores_merged_limits[] = {
69ca3e58
KG		 193 1000000, 1200000, 1400000, 1600000, 1800000, 2000000, 2200000, 2400000,
194 2600000, 2800000, 3000000, 3200000, 3400000, 3600000, 3800000, 4000000
195};
196
a33b25f5
RG		 197/*
198 * Current limits array (in uA) for merged BMEM and BIO.
199 * Entry indexes corresponds to register values.
200 */
5b1f537e 201static const unsigned int da9063_bmem_bio_merged_limits[] = {
69ca3e58
KG		 202 3000000, 3200000, 3400000, 3600000, 3800000, 4000000, 4200000, 4400000,
203 4600000, 4800000, 5000000, 5200000, 5400000, 5600000, 5800000, 6000000
204};
205
a33b25f5 206static int da9063_buck_set_mode(struct regulator_dev *rdev, unsigned int mode)
69ca3e58
KG		 207{
208 struct da9063_regulator *regl = rdev_get_drvdata(rdev);
a33b25f5 209 unsigned int val;
69ca3e58
KG		 210
211 switch (mode) {
212 case REGULATOR_MODE_FAST:
213 val = BUCK_MODE_SYNC;
214 break;
215 case REGULATOR_MODE_NORMAL:
216 val = BUCK_MODE_AUTO;
217 break;
218 case REGULATOR_MODE_STANDBY:
219 val = BUCK_MODE_SLEEP;
220 break;
221 default:
222 return -EINVAL;
223 }
224
225 return regmap_field_write(regl->mode, val);
226}
227
228/*
229 * Bucks use single mode register field for normal operation
230 * and suspend state.
231 * There are 3 modes to map to: FAST, NORMAL, and STANDBY.
232 */
233
a33b25f5 234static unsigned int da9063_buck_get_mode(struct regulator_dev *rdev)
69ca3e58
KG		 235{
236 struct da9063_regulator *regl = rdev_get_drvdata(rdev);
e62cb0e0 237 unsigned int val;
69ca3e58
KG		 238 int ret;
239
240 ret = regmap_field_read(regl->mode, &val);
241 if (ret < 0)
242 return ret;
243
244 switch (val) {
245 default:
246 case BUCK_MODE_MANUAL:
69ca3e58
KG		 247 /* Sleep flag bit decides the mode */
248 break;
249 case BUCK_MODE_SLEEP:
250 return REGULATOR_MODE_STANDBY;
251 case BUCK_MODE_SYNC:
252 return REGULATOR_MODE_FAST;
253 case BUCK_MODE_AUTO:
254 return REGULATOR_MODE_NORMAL;
255 }
256
fc69bab1 257 ret = regmap_field_read(regl->sleep, &val);
69ca3e58
KG		 258 if (ret < 0)
259 return 0;
260
261 if (val)
e62cb0e0 262 return REGULATOR_MODE_STANDBY;
69ca3e58 263 else
e62cb0e0 264 return REGULATOR_MODE_FAST;
69ca3e58
KG		 265}
266
267/*
268 * LDOs use sleep flags - one for normal and one for suspend state.
269 * There are 2 modes to map to: NORMAL and STANDBY (sleep) for each state.
270 */
271
a33b25f5 272static int da9063_ldo_set_mode(struct regulator_dev *rdev, unsigned int mode)
69ca3e58
KG		 273{
274 struct da9063_regulator *regl = rdev_get_drvdata(rdev);
a33b25f5 275 unsigned int val;
69ca3e58
KG		 276
277 switch (mode) {
278 case REGULATOR_MODE_NORMAL:
279 val = 0;
280 break;
281 case REGULATOR_MODE_STANDBY:
282 val = 1;
283 break;
284 default:
285 return -EINVAL;
286 }
287
288 return regmap_field_write(regl->sleep, val);
289}
290
a33b25f5 291static unsigned int da9063_ldo_get_mode(struct regulator_dev *rdev)
69ca3e58
KG		 292{
293 struct da9063_regulator *regl = rdev_get_drvdata(rdev);
69ca3e58
KG		 294 int ret, val;
295
fc69bab1 296 ret = regmap_field_read(regl->sleep, &val);
69ca3e58
KG		 297 if (ret < 0)
298 return 0;
299
300 if (val)
301 return REGULATOR_MODE_STANDBY;
302 else
303 return REGULATOR_MODE_NORMAL;
304}
305
306static int da9063_buck_get_status(struct regulator_dev *rdev)
307{
308 int ret = regulator_is_enabled_regmap(rdev);
309
310 if (ret == 0) {
311 ret = REGULATOR_STATUS_OFF;
312 } else if (ret > 0) {
313 ret = da9063_buck_get_mode(rdev);
314 if (ret > 0)
315 ret = regulator_mode_to_status(ret);
316 else if (ret == 0)
317 ret = -EIO;
318 }
319
320 return ret;
321}
322
323static int da9063_ldo_get_status(struct regulator_dev *rdev)
324{
325 int ret = regulator_is_enabled_regmap(rdev);
326
327 if (ret == 0) {
328 ret = REGULATOR_STATUS_OFF;
329 } else if (ret > 0) {
330 ret = da9063_ldo_get_mode(rdev);
331 if (ret > 0)
332 ret = regulator_mode_to_status(ret);
333 else if (ret == 0)
334 ret = -EIO;
335 }
336
337 return ret;
338}
339
340static int da9063_set_suspend_voltage(struct regulator_dev *rdev, int uV)
341{
342 struct da9063_regulator *regl = rdev_get_drvdata(rdev);
343 const struct da9063_regulator_info *rinfo = regl->info;
344 int ret, sel;
345
346 sel = regulator_map_voltage_linear(rdev, uV, uV);
347 if (sel < 0)
8a7963d5 348 return sel;
69ca3e58
KG		 349
350 sel <<= ffs(rdev->desc->vsel_mask) - 1;
351
352 ret = regmap_update_bits(regl->hw->regmap, rinfo->suspend_vsel_reg,
353 rdev->desc->vsel_mask, sel);
354
355 return ret;
356}
357
358static int da9063_suspend_enable(struct regulator_dev *rdev)
359{
360 struct da9063_regulator *regl = rdev_get_drvdata(rdev);
361
362 return regmap_field_write(regl->suspend, 1);
363}
364
365static int da9063_suspend_disable(struct regulator_dev *rdev)
366{
367 struct da9063_regulator *regl = rdev_get_drvdata(rdev);
368
369 return regmap_field_write(regl->suspend, 0);
370}
371
a33b25f5
RG		 372static int da9063_buck_set_suspend_mode(struct regulator_dev *rdev,
373 unsigned int mode)
69ca3e58
KG		 374{
375 struct da9063_regulator *regl = rdev_get_drvdata(rdev);
376 int val;
377
378 switch (mode) {
379 case REGULATOR_MODE_FAST:
380 val = BUCK_MODE_SYNC;
381 break;
382 case REGULATOR_MODE_NORMAL:
383 val = BUCK_MODE_AUTO;
384 break;
385 case REGULATOR_MODE_STANDBY:
386 val = BUCK_MODE_SLEEP;
387 break;
388 default:
389 return -EINVAL;
390 }
391
392 return regmap_field_write(regl->mode, val);
393}
394
a33b25f5
RG		 395static int da9063_ldo_set_suspend_mode(struct regulator_dev *rdev,
396 unsigned int mode)
69ca3e58
KG		 397{
398 struct da9063_regulator *regl = rdev_get_drvdata(rdev);
a33b25f5 399 unsigned int val;
69ca3e58
KG		 400
401 switch (mode) {
402 case REGULATOR_MODE_NORMAL:
403 val = 0;
404 break;
405 case REGULATOR_MODE_STANDBY:
406 val = 1;
407 break;
408 default:
409 return -EINVAL;
410 }
411
412 return regmap_field_write(regl->suspend_sleep, val);
413}
414
541ee8f6
VP		 415static unsigned int da9063_get_overdrive_mask(const struct regulator_desc *desc)
416{
417 switch (desc->id) {
418 case DA9063_ID_BCORES_MERGED:
419 case DA9063_ID_BCORE1:
420 return DA9063_BCORE1_OD;
421 case DA9063_ID_BCORE2:
422 return DA9063_BCORE2_OD;
423 case DA9063_ID_BPRO:
424 return DA9063_BPRO_OD;
425 default:
426 return 0;
427 }
428}
429
430static int da9063_buck_set_limit_set_overdrive(struct regulator_dev *rdev,
431 int min_uA, int max_uA,
432 unsigned int overdrive_mask)
433{
434 /*
435 * When enabling overdrive, do it before changing the current limit to
436 * ensure sufficient supply throughout the switch.
437 */
438 struct da9063_regulator *regl = rdev_get_drvdata(rdev);
439 int ret;
440 unsigned int orig_overdrive;
441
442 ret = regmap_read(regl->hw->regmap, DA9063_REG_CONFIG_H,
443 &orig_overdrive);
444 if (ret < 0)
445 return ret;
446 orig_overdrive &= overdrive_mask;
447
448 if (orig_overdrive == 0) {
449 ret = regmap_set_bits(regl->hw->regmap, DA9063_REG_CONFIG_H,
450 overdrive_mask);
451 if (ret < 0)
452 return ret;
453 }
454
455 ret = regulator_set_current_limit_regmap(rdev, min_uA / 2, max_uA / 2);
456 if (ret < 0 && orig_overdrive == 0)
457 /*
458 * regulator_set_current_limit_regmap may have rejected the
459 * change because of unusable min_uA and/or max_uA inputs.
460 * Attempt to restore original overdrive state, ignore failure-
461 * on-failure.
462 */
463 regmap_clear_bits(regl->hw->regmap, DA9063_REG_CONFIG_H,
464 overdrive_mask);
465
466 return ret;
467}
468
469static int da9063_buck_set_limit_clear_overdrive(struct regulator_dev *rdev,
470 int min_uA, int max_uA,
471 unsigned int overdrive_mask)
472{
473 /*
474 * When disabling overdrive, do it after changing the current limit to
475 * ensure sufficient supply throughout the switch.
476 */
477 struct da9063_regulator *regl = rdev_get_drvdata(rdev);
478 int ret, orig_limit;
479
480 ret = regmap_read(rdev->regmap, rdev->desc->csel_reg, &orig_limit);
481 if (ret < 0)
482 return ret;
483
484 ret = regulator_set_current_limit_regmap(rdev, min_uA, max_uA);
485 if (ret < 0)
486 return ret;
487
488 ret = regmap_clear_bits(regl->hw->regmap, DA9063_REG_CONFIG_H,
489 overdrive_mask);
490 if (ret < 0)
491 /*
492 * Attempt to restore original current limit, ignore failure-
493 * on-failure.
494 */
495 regmap_write(rdev->regmap, rdev->desc->csel_reg, orig_limit);
496
497 return ret;
498}
499
500static int da9063_buck_set_current_limit(struct regulator_dev *rdev,
501 int min_uA, int max_uA)
502{
503 unsigned int overdrive_mask, n_currents;
504
505 overdrive_mask = da9063_get_overdrive_mask(rdev->desc);
506 if (overdrive_mask) {
507 n_currents = rdev->desc->n_current_limits;
508 if (n_currents == 0)
509 return -EINVAL;
510
511 if (max_uA > rdev->desc->curr_table[n_currents - 1])
512 return da9063_buck_set_limit_set_overdrive(rdev, min_uA,
513 max_uA,
514 overdrive_mask);
515
516 return da9063_buck_set_limit_clear_overdrive(rdev, min_uA,
517 max_uA,
518 overdrive_mask);
519 }
520 return regulator_set_current_limit_regmap(rdev, min_uA, max_uA);
521}
522
523static int da9063_buck_get_current_limit(struct regulator_dev *rdev)
524{
525 struct da9063_regulator *regl = rdev_get_drvdata(rdev);
526 int val, ret, limit;
527 unsigned int mask;
528
529 limit = regulator_get_current_limit_regmap(rdev);
530 if (limit < 0)
531 return limit;
532 mask = da9063_get_overdrive_mask(rdev->desc);
533 if (mask) {
534 ret = regmap_read(regl->hw->regmap, DA9063_REG_CONFIG_H, &val);
535 if (ret < 0)
536 return ret;
537 if (val & mask)
538 limit *= 2;
539 }
540 return limit;
541}
542
71242b49 543static const struct regulator_ops da9063_buck_ops = {
69ca3e58
KG		 544 .enable = regulator_enable_regmap,
545 .disable = regulator_disable_regmap,
546 .is_enabled = regulator_is_enabled_regmap,
547 .get_voltage_sel = regulator_get_voltage_sel_regmap,
548 .set_voltage_sel = regulator_set_voltage_sel_regmap,
549 .list_voltage = regulator_list_voltage_linear,
541ee8f6
VP		 550 .set_current_limit = da9063_buck_set_current_limit,
551 .get_current_limit = da9063_buck_get_current_limit,
69ca3e58
KG		 552 .set_mode = da9063_buck_set_mode,
553 .get_mode = da9063_buck_get_mode,
554 .get_status = da9063_buck_get_status,
555 .set_suspend_voltage = da9063_set_suspend_voltage,
556 .set_suspend_enable = da9063_suspend_enable,
557 .set_suspend_disable = da9063_suspend_disable,
558 .set_suspend_mode = da9063_buck_set_suspend_mode,
559};
560
71242b49 561static const struct regulator_ops da9063_ldo_ops = {
69ca3e58
KG		 562 .enable = regulator_enable_regmap,
563 .disable = regulator_disable_regmap,
564 .is_enabled = regulator_is_enabled_regmap,
565 .get_voltage_sel = regulator_get_voltage_sel_regmap,
566 .set_voltage_sel = regulator_set_voltage_sel_regmap,
567 .list_voltage = regulator_list_voltage_linear,
568 .set_mode = da9063_ldo_set_mode,
569 .get_mode = da9063_ldo_get_mode,
570 .get_status = da9063_ldo_get_status,
571 .set_suspend_voltage = da9063_set_suspend_voltage,
572 .set_suspend_enable = da9063_suspend_enable,
573 .set_suspend_disable = da9063_suspend_disable,
574 .set_suspend_mode = da9063_ldo_set_suspend_mode,
575};
576
577/* Info of regulators for DA9063 */
578static const struct da9063_regulator_info da9063_regulator_info[] = {
579 {
580 DA9063_BUCK(DA9063, BCORE1, 300, 10, 1570,
5b1f537e
AL		 581 da9063_buck_a_limits,
582 DA9063_REG_BUCK_ILIM_C, DA9063_BCORE1_ILIM_MASK),
69ca3e58 583 DA9063_BUCK_COMMON_FIELDS(BCORE1),
69ca3e58
KG		 584 },
585 {
586 DA9063_BUCK(DA9063, BCORE2, 300, 10, 1570,
5b1f537e
AL		 587 da9063_buck_a_limits,
588 DA9063_REG_BUCK_ILIM_C, DA9063_BCORE2_ILIM_MASK),
69ca3e58 589 DA9063_BUCK_COMMON_FIELDS(BCORE2),
69ca3e58
KG		 590 },
591 {
592 DA9063_BUCK(DA9063, BPRO, 530, 10, 1800,
5b1f537e
AL		 593 da9063_buck_a_limits,
594 DA9063_REG_BUCK_ILIM_B, DA9063_BPRO_ILIM_MASK),
69ca3e58 595 DA9063_BUCK_COMMON_FIELDS(BPRO),
69ca3e58
KG		 596 },
597 {
598 DA9063_BUCK(DA9063, BMEM, 800, 20, 3340,
5b1f537e
AL		 599 da9063_buck_b_limits,
600 DA9063_REG_BUCK_ILIM_A, DA9063_BMEM_ILIM_MASK),
69ca3e58 601 DA9063_BUCK_COMMON_FIELDS(BMEM),
69ca3e58
KG		 602 },
603 {
604 DA9063_BUCK(DA9063, BIO, 800, 20, 3340,
5b1f537e
AL		 605 da9063_buck_b_limits,
606 DA9063_REG_BUCK_ILIM_A, DA9063_BIO_ILIM_MASK),
69ca3e58 607 DA9063_BUCK_COMMON_FIELDS(BIO),
69ca3e58
KG		 608 },
609 {
610 DA9063_BUCK(DA9063, BPERI, 800, 20, 3340,
5b1f537e
AL		 611 da9063_buck_b_limits,
612 DA9063_REG_BUCK_ILIM_B, DA9063_BPERI_ILIM_MASK),
69ca3e58 613 DA9063_BUCK_COMMON_FIELDS(BPERI),
69ca3e58
KG		 614 },
615 {
616 DA9063_BUCK(DA9063, BCORES_MERGED, 300, 10, 1570,
5b1f537e
AL		 617 da9063_bcores_merged_limits,
618 DA9063_REG_BUCK_ILIM_C, DA9063_BCORE1_ILIM_MASK),
69ca3e58
KG		 619 /* BCORES_MERGED uses the same register fields as BCORE1 */
620 DA9063_BUCK_COMMON_FIELDS(BCORE1),
69ca3e58
KG		 621 },
622 {
623 DA9063_BUCK(DA9063, BMEM_BIO_MERGED, 800, 20, 3340,
5b1f537e
AL		 624 da9063_bmem_bio_merged_limits,
625 DA9063_REG_BUCK_ILIM_A, DA9063_BMEM_ILIM_MASK),
69ca3e58
KG		 626 /* BMEM_BIO_MERGED uses the same register fields as BMEM */
627 DA9063_BUCK_COMMON_FIELDS(BMEM),
69ca3e58 628 },
1c892e38
MV		 629 {
630 DA9063_LDO(DA9063, LDO3, 900, 20, 3440),
1c892e38
MV		 631 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO3_LIM),
632 },
633 {
634 DA9063_LDO(DA9063, LDO7, 900, 50, 3600),
1c892e38
MV		 635 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO7_LIM),
636 },
637 {
638 DA9063_LDO(DA9063, LDO8, 900, 50, 3600),
1c892e38
MV		 639 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO8_LIM),
640 },
641 {
642 DA9063_LDO(DA9063, LDO9, 950, 50, 3600),
1c892e38
MV		 643 },
644 {
645 DA9063_LDO(DA9063, LDO11, 900, 50, 3600),
1c892e38
MV		 646 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO11_LIM),
647 },
648
649 /* The following LDOs are present only on DA9063, not on DA9063L */
69ca3e58
KG		 650 {
651 DA9063_LDO(DA9063, LDO1, 600, 20, 1860),
69ca3e58
KG		 652 },
653 {
654 DA9063_LDO(DA9063, LDO2, 600, 20, 1860),
69ca3e58 655 },
69ca3e58
KG		 656 {
657 DA9063_LDO(DA9063, LDO4, 900, 20, 3440),
69ca3e58
KG		 658 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO4_LIM),
659 },
660 {
661 DA9063_LDO(DA9063, LDO5, 900, 50, 3600),
69ca3e58
KG		 662 },
663 {
664 DA9063_LDO(DA9063, LDO6, 900, 50, 3600),
69ca3e58 665 },
1c892e38 666
69ca3e58
KG		 667 {
668 DA9063_LDO(DA9063, LDO10, 900, 50, 3600),
69ca3e58 669 },
69ca3e58
KG		 670};
671
672/* Link chip model with regulators info table */
673static struct da9063_dev_model regulators_models[] = {
674 {
675 .regulator_info = da9063_regulator_info,
676 .n_regulators = ARRAY_SIZE(da9063_regulator_info),
492510dd 677 .type = PMIC_TYPE_DA9063,
69ca3e58 678 },
1c892e38
MV		 679 {
680 .regulator_info = da9063_regulator_info,
681 .n_regulators = ARRAY_SIZE(da9063_regulator_info) - 6,
682 .type = PMIC_TYPE_DA9063L,
683 },
69ca3e58
KG		 684 { }
685};
686
687/* Regulator interrupt handlers */
632b3d62 688static irqreturn_t da9063_ldo_lim_event(int irq, void *data)
69ca3e58
KG		 689{
690 struct da9063_regulators *regulators = data;
691 struct da9063 *hw = regulators->regulator[0].hw;
692 struct da9063_regulator *regl;
a33b25f5 693 int bits, i, ret;
69ca3e58
KG		 694
695 ret = regmap_read(hw->regmap, DA9063_REG_STATUS_D, &bits);
696 if (ret < 0)
697 return IRQ_NONE;
698
699 for (i = regulators->n_regulators - 1; i >= 0; i--) {
700 regl = &regulators->regulator[i];
701 if (regl->info->oc_event.reg != DA9063_REG_STATUS_D)
702 continue;
703
29d40b4a 704 if (BIT(regl->info->oc_event.lsb) & bits) {
69ca3e58
KG		 705 regulator_notifier_call_chain(regl->rdev,
706 REGULATOR_EVENT_OVER_CURRENT, NULL);
29d40b4a 707 }
69ca3e58
KG		 708 }
709
710 return IRQ_HANDLED;
711}
712
713/*
714 * Probing and Initialisation functions
715 */
716static const struct regulator_init_data *da9063_get_regulator_initdata(
717 const struct da9063_regulators_pdata *regl_pdata, int id)
718{
719 int i;
720
721 for (i = 0; i < regl_pdata->n_regulators; i++) {
722 if (id == regl_pdata->regulator_data[i].id)
723 return regl_pdata->regulator_data[i].initdata;
724 }
725
726 return NULL;
727}
728
69ca3e58
KG		 729static struct of_regulator_match da9063_matches[] = {
730 [DA9063_ID_BCORE1] = { .name = "bcore1" },
731 [DA9063_ID_BCORE2] = { .name = "bcore2" },
732 [DA9063_ID_BPRO] = { .name = "bpro", },
733 [DA9063_ID_BMEM] = { .name = "bmem", },
734 [DA9063_ID_BIO] = { .name = "bio", },
735 [DA9063_ID_BPERI] = { .name = "bperi", },
736 [DA9063_ID_BCORES_MERGED] = { .name = "bcores-merged" },
737 [DA9063_ID_BMEM_BIO_MERGED] = { .name = "bmem-bio-merged", },
1c892e38
MV		 738 [DA9063_ID_LDO3] = { .name = "ldo3", },
739 [DA9063_ID_LDO7] = { .name = "ldo7", },
740 [DA9063_ID_LDO8] = { .name = "ldo8", },
741 [DA9063_ID_LDO9] = { .name = "ldo9", },
742 [DA9063_ID_LDO11] = { .name = "ldo11", },
743 /* The following LDOs are present only on DA9063, not on DA9063L */
69ca3e58
KG		 744 [DA9063_ID_LDO1] = { .name = "ldo1", },
745 [DA9063_ID_LDO2] = { .name = "ldo2", },
69ca3e58
KG		 746 [DA9063_ID_LDO4] = { .name = "ldo4", },
747 [DA9063_ID_LDO5] = { .name = "ldo5", },
748 [DA9063_ID_LDO6] = { .name = "ldo6", },
69ca3e58 749 [DA9063_ID_LDO10] = { .name = "ldo10", },
69ca3e58
KG		 750};
751
752static struct da9063_regulators_pdata *da9063_parse_regulators_dt(
753 struct platform_device *pdev,
754 struct of_regulator_match **da9063_reg_matches)
755{
1c892e38 756 struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent);
69ca3e58
KG		 757 struct da9063_regulators_pdata *pdata;
758 struct da9063_regulator_data *rdata;
759 struct device_node *node;
1c892e38 760 int da9063_matches_len = ARRAY_SIZE(da9063_matches);
69ca3e58
KG		 761 int i, n, num;
762
1c892e38
MV		 763 if (da9063->type == PMIC_TYPE_DA9063L)
764 da9063_matches_len -= 6;
765
25cc275a 766 node = of_get_child_by_name(pdev->dev.parent->of_node, "regulators");
69ca3e58
KG		 767 if (!node) {
768 dev_err(&pdev->dev, "Regulators device node not found\n");
769 return ERR_PTR(-ENODEV);
770 }
771
772 num = of_regulator_match(&pdev->dev, node, da9063_matches,
1c892e38 773 da9063_matches_len);
2da8215c 774 of_node_put(node);
69ca3e58
KG		 775 if (num < 0) {
776 dev_err(&pdev->dev, "Failed to match regulators\n");
777 return ERR_PTR(-EINVAL);
778 }
779
780 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
781 if (!pdata)
782 return ERR_PTR(-ENOMEM);
783
a86854d0
KC		 784 pdata->regulator_data = devm_kcalloc(&pdev->dev,
785 num, sizeof(*pdata->regulator_data),
69ca3e58
KG		 786 GFP_KERNEL);
787 if (!pdata->regulator_data)
788 return ERR_PTR(-ENOMEM);
789 pdata->n_regulators = num;
790
791 n = 0;
1c892e38 792 for (i = 0; i < da9063_matches_len; i++) {
69ca3e58
KG		 793 if (!da9063_matches[i].init_data)
794 continue;
795
796 rdata = &pdata->regulator_data[n];
797 rdata->id = i;
798 rdata->initdata = da9063_matches[i].init_data;
799
800 n++;
424fb281 801 }
69ca3e58
KG		 802
803 *da9063_reg_matches = da9063_matches;
804 return pdata;
805}
69ca3e58
KG		 806
807static int da9063_regulator_probe(struct platform_device *pdev)
808{
809 struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent);
0fdfd40a 810 struct of_regulator_match *da9063_reg_matches = NULL;
69ca3e58
KG		 811 struct da9063_regulators_pdata *regl_pdata;
812 const struct da9063_dev_model *model;
813 struct da9063_regulators *regulators;
814 struct da9063_regulator *regl;
815 struct regulator_config config;
816 bool bcores_merged, bmem_bio_merged;
817 int id, irq, n, n_regulators, ret, val;
69ca3e58 818
66230729 819 regl_pdata = da9063_parse_regulators_dt(pdev, &da9063_reg_matches);
69ca3e58
KG		 820
821 if (IS_ERR(regl_pdata) || regl_pdata->n_regulators == 0) {
822 dev_err(&pdev->dev,
823 "No regulators defined for the platform\n");
b6615659 824 return -ENODEV;
69ca3e58
KG		 825 }
826
827 /* Find regulators set for particular device model */
828 for (model = regulators_models; model->regulator_info; model++) {
492510dd 829 if (model->type == da9063->type)
69ca3e58
KG		 830 break;
831 }
832 if (!model->regulator_info) {
833 dev_err(&pdev->dev, "Chip model not recognised (%u)\n",
492510dd 834 da9063->type);
69ca3e58
KG		 835 return -ENODEV;
836 }
837
838 ret = regmap_read(da9063->regmap, DA9063_REG_CONFIG_H, &val);
839 if (ret < 0) {
840 dev_err(&pdev->dev,
841 "Error while reading BUCKs configuration\n");
8a7963d5 842 return ret;
69ca3e58
KG		 843 }
844 bcores_merged = val & DA9063_BCORE_MERGE;
845 bmem_bio_merged = val & DA9063_BUCK_MERGE;
846
847 n_regulators = model->n_regulators;
848 if (bcores_merged)
849 n_regulators -= 2; /* remove BCORE1, BCORE2 */
850 else
851 n_regulators--; /* remove BCORES_MERGED */
852 if (bmem_bio_merged)
853 n_regulators -= 2; /* remove BMEM, BIO */
854 else
855 n_regulators--; /* remove BMEM_BIO_MERGED */
856
857 /* Allocate memory required by usable regulators */
ac227fb5
GS		 858 regulators = devm_kzalloc(&pdev->dev, struct_size(regulators,
859 regulator, n_regulators), GFP_KERNEL);
8b5baa56 860 if (!regulators)
69ca3e58 861 return -ENOMEM;
69ca3e58
KG		 862
863 regulators->n_regulators = n_regulators;
864 platform_set_drvdata(pdev, regulators);
865
866 /* Register all regulators declared in platform information */
867 n = 0;
868 id = 0;
869 while (n < regulators->n_regulators) {
870 /* Skip regulator IDs depending on merge mode configuration */
871 switch (id) {
872 case DA9063_ID_BCORE1:
873 case DA9063_ID_BCORE2:
874 if (bcores_merged) {
875 id++;
876 continue;
877 }
878 break;
879 case DA9063_ID_BMEM:
880 case DA9063_ID_BIO:
881 if (bmem_bio_merged) {
882 id++;
883 continue;
884 }
885 break;
886 case DA9063_ID_BCORES_MERGED:
887 if (!bcores_merged) {
888 id++;
889 continue;
890 }
891 break;
892 case DA9063_ID_BMEM_BIO_MERGED:
893 if (!bmem_bio_merged) {
894 id++;
895 continue;
896 }
897 break;
898 }
899
900 /* Initialise regulator structure */
901 regl = &regulators->regulator[n];
902 regl->hw = da9063;
903 regl->info = &model->regulator_info[id];
904 regl->desc = regl->info->desc;
905 regl->desc.type = REGULATOR_VOLTAGE;
906 regl->desc.owner = THIS_MODULE;
907
84592039 908 if (regl->info->mode.reg) {
69ca3e58
KG		 909 regl->mode = devm_regmap_field_alloc(&pdev->dev,
910 da9063->regmap, regl->info->mode);
84592039
AL		 911 if (IS_ERR(regl->mode))
912 return PTR_ERR(regl->mode);
913 }
914
915 if (regl->info->suspend.reg) {
69ca3e58
KG		 916 regl->suspend = devm_regmap_field_alloc(&pdev->dev,
917 da9063->regmap, regl->info->suspend);
84592039
AL		 918 if (IS_ERR(regl->suspend))
919 return PTR_ERR(regl->suspend);
920 }
921
922 if (regl->info->sleep.reg) {
69ca3e58
KG		 923 regl->sleep = devm_regmap_field_alloc(&pdev->dev,
924 da9063->regmap, regl->info->sleep);
84592039
AL		 925 if (IS_ERR(regl->sleep))
926 return PTR_ERR(regl->sleep);
927 }
928
929 if (regl->info->suspend_sleep.reg) {
69ca3e58 930 regl->suspend_sleep = devm_regmap_field_alloc(&pdev->dev,
a33b25f5 931 da9063->regmap, regl->info->suspend_sleep);
84592039
AL		 932 if (IS_ERR(regl->suspend_sleep))
933 return PTR_ERR(regl->suspend_sleep);
934 }
935
69ca3e58
KG		 936 /* Register regulator */
937 memset(&config, 0, sizeof(config));
938 config.dev = &pdev->dev;
939 config.init_data = da9063_get_regulator_initdata(regl_pdata, id);
940 config.driver_data = regl;
941 if (da9063_reg_matches)
942 config.of_node = da9063_reg_matches[id].of_node;
943 config.regmap = da9063->regmap;
e97bba91
JH		 944 regl->rdev = devm_regulator_register(&pdev->dev, &regl->desc,
945 &config);
e515800b 946 if (IS_ERR(regl->rdev)) {
69ca3e58
KG		 947 dev_err(&pdev->dev,
948 "Failed to register %s regulator\n",
949 regl->desc.name);
e97bba91 950 return PTR_ERR(regl->rdev);
69ca3e58
KG		 951 }
952 id++;
953 n++;
954 }
955
956 /* LDOs overcurrent event support */
957 irq = platform_get_irq_byname(pdev, "LDO_LIM");
47241933 958 if (irq < 0)
e97bba91 959 return irq;
69ca3e58 960
d87aef91 961 ret = devm_request_threaded_irq(&pdev->dev, irq,
8ad365c9
DL		 962 NULL, da9063_ldo_lim_event,
963 IRQF_TRIGGER_LOW | IRQF_ONESHOT,
964 "LDO_LIM", regulators);
6d8d840b 965 if (ret)
d87aef91 966 dev_err(&pdev->dev, "Failed to request LDO_LIM IRQ.\n");
69ca3e58 967
6d8d840b 968 return ret;
69ca3e58
KG		 969}
970
69ca3e58
KG		 971static struct platform_driver da9063_regulator_driver = {
972 .driver = {
973 .name = DA9063_DRVNAME_REGULATORS,
69ca3e58
KG		 974 },
975 .probe = da9063_regulator_probe,
69ca3e58
KG		 976};
977
978static int __init da9063_regulator_init(void)
979{
980 return platform_driver_register(&da9063_regulator_driver);
981}
982subsys_initcall(da9063_regulator_init);
983
984static void __exit da9063_regulator_cleanup(void)
985{
986 platform_driver_unregister(&da9063_regulator_driver);
987}
988module_exit(da9063_regulator_cleanup);
989
990
991/* Module information */
992MODULE_AUTHOR("Krystian Garbaciak <krystian.garbaciak@diasemi.com>");
993MODULE_DESCRIPTION("DA9063 regulators driver");
994MODULE_LICENSE("GPL");
ac40b441 995MODULE_ALIAS("platform:" DA9063_DRVNAME_REGULATORS);
Linux 6.x block layer and io_uring tree(s)