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regulator: da9063: Simplify da9063_buck_set_mode for BUCK_MODE_MANUAL case
[linux-2.6-block.git] / drivers / regulator / da9063-regulator.c
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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 {
69 unsigned n_regulators;
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), \
103 .suspend_sleep = BFIELD(DA9063_REG_V##regl_name##_B, DA9063_LDO_SL), \
104 .suspend_vsel_reg = DA9063_REG_V##regl_name##_B
105
106/* Macros for voltage DC/DC converters (BUCKs) */
5b1f537e
AL		 107#define DA9063_BUCK(chip, regl_name, min_mV, step_mV, max_mV, limits_array, \
108 creg, cmask) \
69ca3e58
KG		 109 .desc.id = chip##_ID_##regl_name, \
110 .desc.name = __stringify(chip##_##regl_name), \
111 .desc.ops = &da9063_buck_ops, \
112 .desc.min_uV = (min_mV) * 1000, \
113 .desc.uV_step = (step_mV) * 1000, \
114 .desc.n_voltages = ((max_mV) - (min_mV))/(step_mV) + 1, \
5b1f537e
AL		 115 .desc.csel_reg = (creg), \
116 .desc.csel_mask = (cmask), \
117 .desc.curr_table = limits_array, \
118 .desc.n_current_limits = ARRAY_SIZE(limits_array)
69ca3e58
KG		 119
120#define DA9063_BUCK_COMMON_FIELDS(regl_name) \
121 .desc.enable_reg = DA9063_REG_##regl_name##_CONT, \
122 .desc.enable_mask = DA9063_BUCK_EN, \
123 .desc.vsel_reg = DA9063_REG_V##regl_name##_A, \
124 .desc.vsel_mask = DA9063_VBUCK_MASK, \
125 .desc.linear_min_sel = DA9063_VBUCK_BIAS, \
126 .sleep = BFIELD(DA9063_REG_V##regl_name##_A, DA9063_BUCK_SL), \
127 .suspend_sleep = BFIELD(DA9063_REG_V##regl_name##_B, DA9063_BUCK_SL), \
128 .suspend_vsel_reg = DA9063_REG_V##regl_name##_B, \
129 .mode = BFIELD(DA9063_REG_##regl_name##_CFG, DA9063_BUCK_MODE_MASK)
130
131/* Defines asignment of regulators info table to chip model */
132struct da9063_dev_model {
133 const struct da9063_regulator_info *regulator_info;
134 unsigned n_regulators;
492510dd 135 enum da9063_type type;
69ca3e58
KG		 136};
137
138/* Single regulator settings */
139struct da9063_regulator {
140 struct regulator_desc desc;
141 struct regulator_dev *rdev;
142 struct da9063 *hw;
143 const struct da9063_regulator_info *info;
144
145 struct regmap_field *mode;
146 struct regmap_field *suspend;
147 struct regmap_field *sleep;
148 struct regmap_field *suspend_sleep;
69ca3e58
KG		 149};
150
151/* Encapsulates all information for the regulators driver */
152struct da9063_regulators {
69ca3e58
KG		 153 unsigned n_regulators;
154 /* Array size to be defined during init. Keep at end. */
155 struct da9063_regulator regulator[0];
156};
157
158/* BUCK modes for DA9063 */
159enum {
160 BUCK_MODE_MANUAL, /* 0 */
161 BUCK_MODE_SLEEP, /* 1 */
162 BUCK_MODE_SYNC, /* 2 */
163 BUCK_MODE_AUTO /* 3 */
164};
165
166/* Regulator operations */
167
168/* Current limits array (in uA) for BCORE1, BCORE2, BPRO.
169 Entry indexes corresponds to register values. */
5b1f537e 170static const unsigned int da9063_buck_a_limits[] = {
69ca3e58
KG		 171 500000, 600000, 700000, 800000, 900000, 1000000, 1100000, 1200000,
172 1300000, 1400000, 1500000, 1600000, 1700000, 1800000, 1900000, 2000000
173};
174
175/* Current limits array (in uA) for BMEM, BIO, BPERI.
176 Entry indexes corresponds to register values. */
5b1f537e 177static const unsigned int da9063_buck_b_limits[] = {
69ca3e58
KG		 178 1500000, 1600000, 1700000, 1800000, 1900000, 2000000, 2100000, 2200000,
179 2300000, 2400000, 2500000, 2600000, 2700000, 2800000, 2900000, 3000000
180};
181
182/* Current limits array (in uA) for merged BCORE1 and BCORE2.
183 Entry indexes corresponds to register values. */
5b1f537e 184static const unsigned int da9063_bcores_merged_limits[] = {
69ca3e58
KG		 185 1000000, 1200000, 1400000, 1600000, 1800000, 2000000, 2200000, 2400000,
186 2600000, 2800000, 3000000, 3200000, 3400000, 3600000, 3800000, 4000000
187};
188
189/* Current limits array (in uA) for merged BMEM and BIO.
190 Entry indexes corresponds to register values. */
5b1f537e 191static const unsigned int da9063_bmem_bio_merged_limits[] = {
69ca3e58
KG		 192 3000000, 3200000, 3400000, 3600000, 3800000, 4000000, 4200000, 4400000,
193 4600000, 4800000, 5000000, 5200000, 5400000, 5600000, 5800000, 6000000
194};
195
69ca3e58
KG		 196static int da9063_buck_set_mode(struct regulator_dev *rdev, unsigned mode)
197{
198 struct da9063_regulator *regl = rdev_get_drvdata(rdev);
199 unsigned val;
200
201 switch (mode) {
202 case REGULATOR_MODE_FAST:
203 val = BUCK_MODE_SYNC;
204 break;
205 case REGULATOR_MODE_NORMAL:
206 val = BUCK_MODE_AUTO;
207 break;
208 case REGULATOR_MODE_STANDBY:
209 val = BUCK_MODE_SLEEP;
210 break;
211 default:
212 return -EINVAL;
213 }
214
215 return regmap_field_write(regl->mode, val);
216}
217
218/*
219 * Bucks use single mode register field for normal operation
220 * and suspend state.
221 * There are 3 modes to map to: FAST, NORMAL, and STANDBY.
222 */
223
224static unsigned da9063_buck_get_mode(struct regulator_dev *rdev)
225{
226 struct da9063_regulator *regl = rdev_get_drvdata(rdev);
227 struct regmap_field *field;
e62cb0e0 228 unsigned int val;
69ca3e58
KG		 229 int ret;
230
231 ret = regmap_field_read(regl->mode, &val);
232 if (ret < 0)
233 return ret;
234
235 switch (val) {
236 default:
237 case BUCK_MODE_MANUAL:
69ca3e58
KG		 238 /* Sleep flag bit decides the mode */
239 break;
240 case BUCK_MODE_SLEEP:
241 return REGULATOR_MODE_STANDBY;
242 case BUCK_MODE_SYNC:
243 return REGULATOR_MODE_FAST;
244 case BUCK_MODE_AUTO:
245 return REGULATOR_MODE_NORMAL;
246 }
247
248 /* Detect current regulator state */
249 ret = regmap_field_read(regl->suspend, &val);
250 if (ret < 0)
251 return 0;
252
253 /* Read regulator mode from proper register, depending on state */
254 if (val)
255 field = regl->suspend_sleep;
256 else
257 field = regl->sleep;
258
259 ret = regmap_field_read(field, &val);
260 if (ret < 0)
261 return 0;
262
263 if (val)
e62cb0e0 264 return REGULATOR_MODE_STANDBY;
69ca3e58 265 else
e62cb0e0 266 return REGULATOR_MODE_FAST;
69ca3e58
KG		 267}
268
269/*
270 * LDOs use sleep flags - one for normal and one for suspend state.
271 * There are 2 modes to map to: NORMAL and STANDBY (sleep) for each state.
272 */
273
274static int da9063_ldo_set_mode(struct regulator_dev *rdev, unsigned mode)
275{
276 struct da9063_regulator *regl = rdev_get_drvdata(rdev);
277 unsigned val;
278
279 switch (mode) {
280 case REGULATOR_MODE_NORMAL:
281 val = 0;
282 break;
283 case REGULATOR_MODE_STANDBY:
284 val = 1;
285 break;
286 default:
287 return -EINVAL;
288 }
289
290 return regmap_field_write(regl->sleep, val);
291}
292
293static unsigned da9063_ldo_get_mode(struct regulator_dev *rdev)
294{
295 struct da9063_regulator *regl = rdev_get_drvdata(rdev);
296 struct regmap_field *field;
297 int ret, val;
298
299 /* Detect current regulator state */
300 ret = regmap_field_read(regl->suspend, &val);
301 if (ret < 0)
302 return 0;
303
304 /* Read regulator mode from proper register, depending on state */
305 if (val)
306 field = regl->suspend_sleep;
307 else
308 field = regl->sleep;
309
310 ret = regmap_field_read(field, &val);
311 if (ret < 0)
312 return 0;
313
314 if (val)
315 return REGULATOR_MODE_STANDBY;
316 else
317 return REGULATOR_MODE_NORMAL;
318}
319
320static int da9063_buck_get_status(struct regulator_dev *rdev)
321{
322 int ret = regulator_is_enabled_regmap(rdev);
323
324 if (ret == 0) {
325 ret = REGULATOR_STATUS_OFF;
326 } else if (ret > 0) {
327 ret = da9063_buck_get_mode(rdev);
328 if (ret > 0)
329 ret = regulator_mode_to_status(ret);
330 else if (ret == 0)
331 ret = -EIO;
332 }
333
334 return ret;
335}
336
337static int da9063_ldo_get_status(struct regulator_dev *rdev)
338{
339 int ret = regulator_is_enabled_regmap(rdev);
340
341 if (ret == 0) {
342 ret = REGULATOR_STATUS_OFF;
343 } else if (ret > 0) {
344 ret = da9063_ldo_get_mode(rdev);
345 if (ret > 0)
346 ret = regulator_mode_to_status(ret);
347 else if (ret == 0)
348 ret = -EIO;
349 }
350
351 return ret;
352}
353
354static int da9063_set_suspend_voltage(struct regulator_dev *rdev, int uV)
355{
356 struct da9063_regulator *regl = rdev_get_drvdata(rdev);
357 const struct da9063_regulator_info *rinfo = regl->info;
358 int ret, sel;
359
360 sel = regulator_map_voltage_linear(rdev, uV, uV);
361 if (sel < 0)
8a7963d5 362 return sel;
69ca3e58
KG		 363
364 sel <<= ffs(rdev->desc->vsel_mask) - 1;
365
366 ret = regmap_update_bits(regl->hw->regmap, rinfo->suspend_vsel_reg,
367 rdev->desc->vsel_mask, sel);
368
369 return ret;
370}
371
372static int da9063_suspend_enable(struct regulator_dev *rdev)
373{
374 struct da9063_regulator *regl = rdev_get_drvdata(rdev);
375
376 return regmap_field_write(regl->suspend, 1);
377}
378
379static int da9063_suspend_disable(struct regulator_dev *rdev)
380{
381 struct da9063_regulator *regl = rdev_get_drvdata(rdev);
382
383 return regmap_field_write(regl->suspend, 0);
384}
385
386static int da9063_buck_set_suspend_mode(struct regulator_dev *rdev, unsigned mode)
387{
388 struct da9063_regulator *regl = rdev_get_drvdata(rdev);
389 int val;
390
391 switch (mode) {
392 case REGULATOR_MODE_FAST:
393 val = BUCK_MODE_SYNC;
394 break;
395 case REGULATOR_MODE_NORMAL:
396 val = BUCK_MODE_AUTO;
397 break;
398 case REGULATOR_MODE_STANDBY:
399 val = BUCK_MODE_SLEEP;
400 break;
401 default:
402 return -EINVAL;
403 }
404
405 return regmap_field_write(regl->mode, val);
406}
407
408static int da9063_ldo_set_suspend_mode(struct regulator_dev *rdev, unsigned mode)
409{
410 struct da9063_regulator *regl = rdev_get_drvdata(rdev);
411 unsigned val;
412
413 switch (mode) {
414 case REGULATOR_MODE_NORMAL:
415 val = 0;
416 break;
417 case REGULATOR_MODE_STANDBY:
418 val = 1;
419 break;
420 default:
421 return -EINVAL;
422 }
423
424 return regmap_field_write(regl->suspend_sleep, val);
425}
426
71242b49 427static const struct regulator_ops da9063_buck_ops = {
69ca3e58
KG		 428 .enable = regulator_enable_regmap,
429 .disable = regulator_disable_regmap,
430 .is_enabled = regulator_is_enabled_regmap,
431 .get_voltage_sel = regulator_get_voltage_sel_regmap,
432 .set_voltage_sel = regulator_set_voltage_sel_regmap,
433 .list_voltage = regulator_list_voltage_linear,
5b1f537e
AL		 434 .set_current_limit = regulator_set_current_limit_regmap,
435 .get_current_limit = regulator_get_current_limit_regmap,
69ca3e58
KG		 436 .set_mode = da9063_buck_set_mode,
437 .get_mode = da9063_buck_get_mode,
438 .get_status = da9063_buck_get_status,
439 .set_suspend_voltage = da9063_set_suspend_voltage,
440 .set_suspend_enable = da9063_suspend_enable,
441 .set_suspend_disable = da9063_suspend_disable,
442 .set_suspend_mode = da9063_buck_set_suspend_mode,
443};
444
71242b49 445static const struct regulator_ops da9063_ldo_ops = {
69ca3e58
KG		 446 .enable = regulator_enable_regmap,
447 .disable = regulator_disable_regmap,
448 .is_enabled = regulator_is_enabled_regmap,
449 .get_voltage_sel = regulator_get_voltage_sel_regmap,
450 .set_voltage_sel = regulator_set_voltage_sel_regmap,
451 .list_voltage = regulator_list_voltage_linear,
452 .set_mode = da9063_ldo_set_mode,
453 .get_mode = da9063_ldo_get_mode,
454 .get_status = da9063_ldo_get_status,
455 .set_suspend_voltage = da9063_set_suspend_voltage,
456 .set_suspend_enable = da9063_suspend_enable,
457 .set_suspend_disable = da9063_suspend_disable,
458 .set_suspend_mode = da9063_ldo_set_suspend_mode,
459};
460
461/* Info of regulators for DA9063 */
462static const struct da9063_regulator_info da9063_regulator_info[] = {
463 {
464 DA9063_BUCK(DA9063, BCORE1, 300, 10, 1570,
5b1f537e
AL		 465 da9063_buck_a_limits,
466 DA9063_REG_BUCK_ILIM_C, DA9063_BCORE1_ILIM_MASK),
69ca3e58
KG		 467 DA9063_BUCK_COMMON_FIELDS(BCORE1),
468 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE1_SEL),
69ca3e58
KG		 469 },
470 {
471 DA9063_BUCK(DA9063, BCORE2, 300, 10, 1570,
5b1f537e
AL		 472 da9063_buck_a_limits,
473 DA9063_REG_BUCK_ILIM_C, DA9063_BCORE2_ILIM_MASK),
69ca3e58
KG		 474 DA9063_BUCK_COMMON_FIELDS(BCORE2),
475 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE2_SEL),
69ca3e58
KG		 476 },
477 {
478 DA9063_BUCK(DA9063, BPRO, 530, 10, 1800,
5b1f537e
AL		 479 da9063_buck_a_limits,
480 DA9063_REG_BUCK_ILIM_B, DA9063_BPRO_ILIM_MASK),
69ca3e58
KG		 481 DA9063_BUCK_COMMON_FIELDS(BPRO),
482 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBPRO_SEL),
69ca3e58
KG		 483 },
484 {
485 DA9063_BUCK(DA9063, BMEM, 800, 20, 3340,
5b1f537e
AL		 486 da9063_buck_b_limits,
487 DA9063_REG_BUCK_ILIM_A, DA9063_BMEM_ILIM_MASK),
69ca3e58
KG		 488 DA9063_BUCK_COMMON_FIELDS(BMEM),
489 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBMEM_SEL),
69ca3e58
KG		 490 },
491 {
492 DA9063_BUCK(DA9063, BIO, 800, 20, 3340,
5b1f537e
AL		 493 da9063_buck_b_limits,
494 DA9063_REG_BUCK_ILIM_A, DA9063_BIO_ILIM_MASK),
69ca3e58
KG		 495 DA9063_BUCK_COMMON_FIELDS(BIO),
496 .suspend = BFIELD(DA9063_REG_DVC_2, DA9063_VBIO_SEL),
69ca3e58
KG		 497 },
498 {
499 DA9063_BUCK(DA9063, BPERI, 800, 20, 3340,
5b1f537e
AL		 500 da9063_buck_b_limits,
501 DA9063_REG_BUCK_ILIM_B, DA9063_BPERI_ILIM_MASK),
69ca3e58
KG		 502 DA9063_BUCK_COMMON_FIELDS(BPERI),
503 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBPERI_SEL),
69ca3e58
KG		 504 },
505 {
506 DA9063_BUCK(DA9063, BCORES_MERGED, 300, 10, 1570,
5b1f537e
AL		 507 da9063_bcores_merged_limits,
508 DA9063_REG_BUCK_ILIM_C, DA9063_BCORE1_ILIM_MASK),
69ca3e58
KG		 509 /* BCORES_MERGED uses the same register fields as BCORE1 */
510 DA9063_BUCK_COMMON_FIELDS(BCORE1),
511 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE1_SEL),
69ca3e58
KG		 512 },
513 {
514 DA9063_BUCK(DA9063, BMEM_BIO_MERGED, 800, 20, 3340,
5b1f537e
AL		 515 da9063_bmem_bio_merged_limits,
516 DA9063_REG_BUCK_ILIM_A, DA9063_BMEM_ILIM_MASK),
69ca3e58
KG		 517 /* BMEM_BIO_MERGED uses the same register fields as BMEM */
518 DA9063_BUCK_COMMON_FIELDS(BMEM),
519 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBMEM_SEL),
69ca3e58 520 },
1c892e38
MV		 521 {
522 DA9063_LDO(DA9063, LDO3, 900, 20, 3440),
523 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VLDO3_SEL),
524 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO3_LIM),
525 },
526 {
527 DA9063_LDO(DA9063, LDO7, 900, 50, 3600),
528 .suspend = BFIELD(DA9063_REG_LDO7_CONT, DA9063_VLDO7_SEL),
529 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO7_LIM),
530 },
531 {
532 DA9063_LDO(DA9063, LDO8, 900, 50, 3600),
533 .suspend = BFIELD(DA9063_REG_LDO8_CONT, DA9063_VLDO8_SEL),
534 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO8_LIM),
535 },
536 {
537 DA9063_LDO(DA9063, LDO9, 950, 50, 3600),
538 .suspend = BFIELD(DA9063_REG_LDO9_CONT, DA9063_VLDO9_SEL),
539 },
540 {
541 DA9063_LDO(DA9063, LDO11, 900, 50, 3600),
542 .suspend = BFIELD(DA9063_REG_LDO11_CONT, DA9063_VLDO11_SEL),
543 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO11_LIM),
544 },
545
546 /* The following LDOs are present only on DA9063, not on DA9063L */
69ca3e58
KG		 547 {
548 DA9063_LDO(DA9063, LDO1, 600, 20, 1860),
549 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VLDO1_SEL),
550 },
551 {
552 DA9063_LDO(DA9063, LDO2, 600, 20, 1860),
553 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VLDO2_SEL),
554 },
69ca3e58
KG		 555 {
556 DA9063_LDO(DA9063, LDO4, 900, 20, 3440),
557 .suspend = BFIELD(DA9063_REG_DVC_2, DA9063_VLDO4_SEL),
558 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO4_LIM),
559 },
560 {
561 DA9063_LDO(DA9063, LDO5, 900, 50, 3600),
562 .suspend = BFIELD(DA9063_REG_LDO5_CONT, DA9063_VLDO5_SEL),
563 },
564 {
565 DA9063_LDO(DA9063, LDO6, 900, 50, 3600),
566 .suspend = BFIELD(DA9063_REG_LDO6_CONT, DA9063_VLDO6_SEL),
567 },
1c892e38 568
69ca3e58
KG		 569 {
570 DA9063_LDO(DA9063, LDO10, 900, 50, 3600),
571 .suspend = BFIELD(DA9063_REG_LDO10_CONT, DA9063_VLDO10_SEL),
572 },
69ca3e58
KG		 573};
574
575/* Link chip model with regulators info table */
576static struct da9063_dev_model regulators_models[] = {
577 {
578 .regulator_info = da9063_regulator_info,
579 .n_regulators = ARRAY_SIZE(da9063_regulator_info),
492510dd 580 .type = PMIC_TYPE_DA9063,
69ca3e58 581 },
1c892e38
MV		 582 {
583 .regulator_info = da9063_regulator_info,
584 .n_regulators = ARRAY_SIZE(da9063_regulator_info) - 6,
585 .type = PMIC_TYPE_DA9063L,
586 },
69ca3e58
KG		 587 { }
588};
589
590/* Regulator interrupt handlers */
632b3d62 591static irqreturn_t da9063_ldo_lim_event(int irq, void *data)
69ca3e58
KG		 592{
593 struct da9063_regulators *regulators = data;
594 struct da9063 *hw = regulators->regulator[0].hw;
595 struct da9063_regulator *regl;
596 int bits, i , ret;
597
598 ret = regmap_read(hw->regmap, DA9063_REG_STATUS_D, &bits);
599 if (ret < 0)
600 return IRQ_NONE;
601
602 for (i = regulators->n_regulators - 1; i >= 0; i--) {
603 regl = &regulators->regulator[i];
604 if (regl->info->oc_event.reg != DA9063_REG_STATUS_D)
605 continue;
606
29d40b4a
ST		 607 if (BIT(regl->info->oc_event.lsb) & bits) {
608 regulator_lock(regl->rdev);
69ca3e58
KG		 609 regulator_notifier_call_chain(regl->rdev,
610 REGULATOR_EVENT_OVER_CURRENT, NULL);
29d40b4a
ST		 611 regulator_unlock(regl->rdev);
612 }
69ca3e58
KG		 613 }
614
615 return IRQ_HANDLED;
616}
617
618/*
619 * Probing and Initialisation functions
620 */
621static const struct regulator_init_data *da9063_get_regulator_initdata(
622 const struct da9063_regulators_pdata *regl_pdata, int id)
623{
624 int i;
625
626 for (i = 0; i < regl_pdata->n_regulators; i++) {
627 if (id == regl_pdata->regulator_data[i].id)
628 return regl_pdata->regulator_data[i].initdata;
629 }
630
631 return NULL;
632}
633
69ca3e58
KG		 634static struct of_regulator_match da9063_matches[] = {
635 [DA9063_ID_BCORE1] = { .name = "bcore1" },
636 [DA9063_ID_BCORE2] = { .name = "bcore2" },
637 [DA9063_ID_BPRO] = { .name = "bpro", },
638 [DA9063_ID_BMEM] = { .name = "bmem", },
639 [DA9063_ID_BIO] = { .name = "bio", },
640 [DA9063_ID_BPERI] = { .name = "bperi", },
641 [DA9063_ID_BCORES_MERGED] = { .name = "bcores-merged" },
642 [DA9063_ID_BMEM_BIO_MERGED] = { .name = "bmem-bio-merged", },
1c892e38
MV		 643 [DA9063_ID_LDO3] = { .name = "ldo3", },
644 [DA9063_ID_LDO7] = { .name = "ldo7", },
645 [DA9063_ID_LDO8] = { .name = "ldo8", },
646 [DA9063_ID_LDO9] = { .name = "ldo9", },
647 [DA9063_ID_LDO11] = { .name = "ldo11", },
648 /* The following LDOs are present only on DA9063, not on DA9063L */
69ca3e58
KG		 649 [DA9063_ID_LDO1] = { .name = "ldo1", },
650 [DA9063_ID_LDO2] = { .name = "ldo2", },
69ca3e58
KG		 651 [DA9063_ID_LDO4] = { .name = "ldo4", },
652 [DA9063_ID_LDO5] = { .name = "ldo5", },
653 [DA9063_ID_LDO6] = { .name = "ldo6", },
69ca3e58 654 [DA9063_ID_LDO10] = { .name = "ldo10", },
69ca3e58
KG		 655};
656
657static struct da9063_regulators_pdata *da9063_parse_regulators_dt(
658 struct platform_device *pdev,
659 struct of_regulator_match **da9063_reg_matches)
660{
1c892e38 661 struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent);
69ca3e58
KG		 662 struct da9063_regulators_pdata *pdata;
663 struct da9063_regulator_data *rdata;
664 struct device_node *node;
1c892e38 665 int da9063_matches_len = ARRAY_SIZE(da9063_matches);
69ca3e58
KG		 666 int i, n, num;
667
1c892e38
MV		 668 if (da9063->type == PMIC_TYPE_DA9063L)
669 da9063_matches_len -= 6;
670
25cc275a 671 node = of_get_child_by_name(pdev->dev.parent->of_node, "regulators");
69ca3e58
KG		 672 if (!node) {
673 dev_err(&pdev->dev, "Regulators device node not found\n");
674 return ERR_PTR(-ENODEV);
675 }
676
677 num = of_regulator_match(&pdev->dev, node, da9063_matches,
1c892e38 678 da9063_matches_len);
2da8215c 679 of_node_put(node);
69ca3e58
KG		 680 if (num < 0) {
681 dev_err(&pdev->dev, "Failed to match regulators\n");
682 return ERR_PTR(-EINVAL);
683 }
684
685 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
686 if (!pdata)
687 return ERR_PTR(-ENOMEM);
688
a86854d0
KC		 689 pdata->regulator_data = devm_kcalloc(&pdev->dev,
690 num, sizeof(*pdata->regulator_data),
69ca3e58
KG		 691 GFP_KERNEL);
692 if (!pdata->regulator_data)
693 return ERR_PTR(-ENOMEM);
694 pdata->n_regulators = num;
695
696 n = 0;
1c892e38 697 for (i = 0; i < da9063_matches_len; i++) {
69ca3e58
KG		 698 if (!da9063_matches[i].init_data)
699 continue;
700
701 rdata = &pdata->regulator_data[n];
702 rdata->id = i;
703 rdata->initdata = da9063_matches[i].init_data;
704
705 n++;
424fb281 706 }
69ca3e58
KG		 707
708 *da9063_reg_matches = da9063_matches;
709 return pdata;
710}
69ca3e58
KG		 711
712static int da9063_regulator_probe(struct platform_device *pdev)
713{
714 struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent);
0fdfd40a 715 struct of_regulator_match *da9063_reg_matches = NULL;
69ca3e58
KG		 716 struct da9063_regulators_pdata *regl_pdata;
717 const struct da9063_dev_model *model;
718 struct da9063_regulators *regulators;
719 struct da9063_regulator *regl;
720 struct regulator_config config;
721 bool bcores_merged, bmem_bio_merged;
722 int id, irq, n, n_regulators, ret, val;
69ca3e58 723
66230729 724 regl_pdata = da9063_parse_regulators_dt(pdev, &da9063_reg_matches);
69ca3e58
KG		 725
726 if (IS_ERR(regl_pdata) || regl_pdata->n_regulators == 0) {
727 dev_err(&pdev->dev,
728 "No regulators defined for the platform\n");
b6615659 729 return -ENODEV;
69ca3e58
KG		 730 }
731
732 /* Find regulators set for particular device model */
733 for (model = regulators_models; model->regulator_info; model++) {
492510dd 734 if (model->type == da9063->type)
69ca3e58
KG		 735 break;
736 }
737 if (!model->regulator_info) {
738 dev_err(&pdev->dev, "Chip model not recognised (%u)\n",
492510dd 739 da9063->type);
69ca3e58
KG		 740 return -ENODEV;
741 }
742
743 ret = regmap_read(da9063->regmap, DA9063_REG_CONFIG_H, &val);
744 if (ret < 0) {
745 dev_err(&pdev->dev,
746 "Error while reading BUCKs configuration\n");
8a7963d5 747 return ret;
69ca3e58
KG		 748 }
749 bcores_merged = val & DA9063_BCORE_MERGE;
750 bmem_bio_merged = val & DA9063_BUCK_MERGE;
751
752 n_regulators = model->n_regulators;
753 if (bcores_merged)
754 n_regulators -= 2; /* remove BCORE1, BCORE2 */
755 else
756 n_regulators--; /* remove BCORES_MERGED */
757 if (bmem_bio_merged)
758 n_regulators -= 2; /* remove BMEM, BIO */
759 else
760 n_regulators--; /* remove BMEM_BIO_MERGED */
761
762 /* Allocate memory required by usable regulators */
ac227fb5
GS		 763 regulators = devm_kzalloc(&pdev->dev, struct_size(regulators,
764 regulator, n_regulators), GFP_KERNEL);
8b5baa56 765 if (!regulators)
69ca3e58 766 return -ENOMEM;
69ca3e58
KG		 767
768 regulators->n_regulators = n_regulators;
769 platform_set_drvdata(pdev, regulators);
770
771 /* Register all regulators declared in platform information */
772 n = 0;
773 id = 0;
774 while (n < regulators->n_regulators) {
775 /* Skip regulator IDs depending on merge mode configuration */
776 switch (id) {
777 case DA9063_ID_BCORE1:
778 case DA9063_ID_BCORE2:
779 if (bcores_merged) {
780 id++;
781 continue;
782 }
783 break;
784 case DA9063_ID_BMEM:
785 case DA9063_ID_BIO:
786 if (bmem_bio_merged) {
787 id++;
788 continue;
789 }
790 break;
791 case DA9063_ID_BCORES_MERGED:
792 if (!bcores_merged) {
793 id++;
794 continue;
795 }
796 break;
797 case DA9063_ID_BMEM_BIO_MERGED:
798 if (!bmem_bio_merged) {
799 id++;
800 continue;
801 }
802 break;
803 }
804
805 /* Initialise regulator structure */
806 regl = &regulators->regulator[n];
807 regl->hw = da9063;
808 regl->info = &model->regulator_info[id];
809 regl->desc = regl->info->desc;
810 regl->desc.type = REGULATOR_VOLTAGE;
811 regl->desc.owner = THIS_MODULE;
812
84592039 813 if (regl->info->mode.reg) {
69ca3e58
KG		 814 regl->mode = devm_regmap_field_alloc(&pdev->dev,
815 da9063->regmap, regl->info->mode);
84592039
AL		 816 if (IS_ERR(regl->mode))
817 return PTR_ERR(regl->mode);
818 }
819
820 if (regl->info->suspend.reg) {
69ca3e58
KG		 821 regl->suspend = devm_regmap_field_alloc(&pdev->dev,
822 da9063->regmap, regl->info->suspend);
84592039
AL		 823 if (IS_ERR(regl->suspend))
824 return PTR_ERR(regl->suspend);
825 }
826
827 if (regl->info->sleep.reg) {
69ca3e58
KG		 828 regl->sleep = devm_regmap_field_alloc(&pdev->dev,
829 da9063->regmap, regl->info->sleep);
84592039
AL		 830 if (IS_ERR(regl->sleep))
831 return PTR_ERR(regl->sleep);
832 }
833
834 if (regl->info->suspend_sleep.reg) {
69ca3e58
KG		 835 regl->suspend_sleep = devm_regmap_field_alloc(&pdev->dev,
836 da9063->regmap, regl->info->suspend_sleep);
84592039
AL		 837 if (IS_ERR(regl->suspend_sleep))
838 return PTR_ERR(regl->suspend_sleep);
839 }
840
69ca3e58
KG		 841 /* Register regulator */
842 memset(&config, 0, sizeof(config));
843 config.dev = &pdev->dev;
844 config.init_data = da9063_get_regulator_initdata(regl_pdata, id);
845 config.driver_data = regl;
846 if (da9063_reg_matches)
847 config.of_node = da9063_reg_matches[id].of_node;
848 config.regmap = da9063->regmap;
e97bba91
JH		 849 regl->rdev = devm_regulator_register(&pdev->dev, &regl->desc,
850 &config);
e515800b 851 if (IS_ERR(regl->rdev)) {
69ca3e58
KG		 852 dev_err(&pdev->dev,
853 "Failed to register %s regulator\n",
854 regl->desc.name);
e97bba91 855 return PTR_ERR(regl->rdev);
69ca3e58
KG		 856 }
857 id++;
858 n++;
859 }
860
861 /* LDOs overcurrent event support */
862 irq = platform_get_irq_byname(pdev, "LDO_LIM");
47241933 863 if (irq < 0)
e97bba91 864 return irq;
69ca3e58 865
d87aef91 866 ret = devm_request_threaded_irq(&pdev->dev, irq,
8ad365c9
DL		 867 NULL, da9063_ldo_lim_event,
868 IRQF_TRIGGER_LOW | IRQF_ONESHOT,
869 "LDO_LIM", regulators);
870 if (ret) {
d87aef91
AL		 871 dev_err(&pdev->dev, "Failed to request LDO_LIM IRQ.\n");
872 return ret;
69ca3e58
KG		 873 }
874
875 return 0;
69ca3e58
KG		 876}
877
69ca3e58
KG		 878static struct platform_driver da9063_regulator_driver = {
879 .driver = {
880 .name = DA9063_DRVNAME_REGULATORS,
69ca3e58
KG		 881 },
882 .probe = da9063_regulator_probe,
69ca3e58
KG		 883};
884
885static int __init da9063_regulator_init(void)
886{
887 return platform_driver_register(&da9063_regulator_driver);
888}
889subsys_initcall(da9063_regulator_init);
890
891static void __exit da9063_regulator_cleanup(void)
892{
893 platform_driver_unregister(&da9063_regulator_driver);
894}
895module_exit(da9063_regulator_cleanup);
896
897
898/* Module information */
899MODULE_AUTHOR("Krystian Garbaciak <krystian.garbaciak@diasemi.com>");
900MODULE_DESCRIPTION("DA9063 regulators driver");
901MODULE_LICENSE("GPL");
ac40b441 902MODULE_ALIAS("platform:" DA9063_DRVNAME_REGULATORS);
Linux 6.x block layer and io_uring tree(s)