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>
9
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>
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
30 /* DA9063 and DA9063L regulator IDs */
31 enum {
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 */
63 struct da9063_regulator_data {
64 int id;
65 struct regulator_init_data *initdata;
66 };
67
68 struct da9063_regulators_pdata {
69 unsigned int n_regulators;
70 struct da9063_regulator_data *regulator_data;
71 };
72
73 /* Regulator capabilities and registers description */
74 struct da9063_regulator_info {
75 struct regulator_desc desc;
76
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;
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, \
95 .desc.n_voltages = (((max_mV) - (min_mV))/(step_mV) + 1 \
96 + (DA9063_V##regl_name##_BIAS)), \
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 = BFIELD(DA9063_REG_##regl_name##_CONT, DA9063_LDO_CONF), \
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) */
108 #define DA9063_BUCK(chip, regl_name, min_mV, step_mV, max_mV, limits_array, \
109 creg, cmask) \
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, \
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)
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), \
128 .suspend = BFIELD(DA9063_REG_##regl_name##_CONT, DA9063_BUCK_CONF), \
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 */
134 struct da9063_dev_model {
135 const struct da9063_regulator_info *regulator_info;
136 unsigned int n_regulators;
137 enum da9063_type type;
138 };
139
140 /* Single regulator settings */
141 struct 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;
151 };
152
153 /* Encapsulates all information for the regulators driver */
154 struct da9063_regulators {
155 unsigned int n_regulators;
156 /* Array size to be defined during init. Keep at end. */
157 struct da9063_regulator regulator[];
158 };
159
160 /* BUCK modes for DA9063 */
161 enum {
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
170 /*
171 * Current limits array (in uA) for BCORE1, BCORE2, BPRO.
172 * Entry indexes corresponds to register values.
173 */
174 static const unsigned int da9063_buck_a_limits[] = {
175 500000, 600000, 700000, 800000, 900000, 1000000, 1100000, 1200000,
176 1300000, 1400000, 1500000, 1600000, 1700000, 1800000, 1900000, 2000000
177 };
178
179 /*
180 * Current limits array (in uA) for BMEM, BIO, BPERI.
181 * Entry indexes corresponds to register values.
182 */
183 static const unsigned int da9063_buck_b_limits[] = {
184 1500000, 1600000, 1700000, 1800000, 1900000, 2000000, 2100000, 2200000,
185 2300000, 2400000, 2500000, 2600000, 2700000, 2800000, 2900000, 3000000
186 };
187
188 /*
189 * Current limits array (in uA) for merged BCORE1 and BCORE2.
190 * Entry indexes corresponds to register values.
191 */
192 static const unsigned int da9063_bcores_merged_limits[] = {
193 1000000, 1200000, 1400000, 1600000, 1800000, 2000000, 2200000, 2400000,
194 2600000, 2800000, 3000000, 3200000, 3400000, 3600000, 3800000, 4000000
195 };
196
197 /*
198 * Current limits array (in uA) for merged BMEM and BIO.
199 * Entry indexes corresponds to register values.
200 */
201 static const unsigned int da9063_bmem_bio_merged_limits[] = {
202 3000000, 3200000, 3400000, 3600000, 3800000, 4000000, 4200000, 4400000,
203 4600000, 4800000, 5000000, 5200000, 5400000, 5600000, 5800000, 6000000
204 };
205
da9063_buck_set_mode(struct regulator_dev * rdev,unsigned int mode)206 static int da9063_buck_set_mode(struct regulator_dev *rdev, unsigned int mode)
207 {
208 struct da9063_regulator *regl = rdev_get_drvdata(rdev);
209 unsigned int val;
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
da9063_buck_get_mode(struct regulator_dev * rdev)234 static unsigned int da9063_buck_get_mode(struct regulator_dev *rdev)
235 {
236 struct da9063_regulator *regl = rdev_get_drvdata(rdev);
237 unsigned int val;
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:
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
257 ret = regmap_field_read(regl->sleep, &val);
258 if (ret < 0)
259 return 0;
260
261 if (val)
262 return REGULATOR_MODE_STANDBY;
263 else
264 return REGULATOR_MODE_FAST;
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
da9063_ldo_set_mode(struct regulator_dev * rdev,unsigned int mode)272 static int da9063_ldo_set_mode(struct regulator_dev *rdev, unsigned int mode)
273 {
274 struct da9063_regulator *regl = rdev_get_drvdata(rdev);
275 unsigned int val;
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
da9063_ldo_get_mode(struct regulator_dev * rdev)291 static unsigned int da9063_ldo_get_mode(struct regulator_dev *rdev)
292 {
293 struct da9063_regulator *regl = rdev_get_drvdata(rdev);
294 int ret, val;
295
296 ret = regmap_field_read(regl->sleep, &val);
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
da9063_buck_get_status(struct regulator_dev * rdev)306 static 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
da9063_ldo_get_status(struct regulator_dev * rdev)323 static 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
da9063_set_suspend_voltage(struct regulator_dev * rdev,int uV)340 static 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)
348 return sel;
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
da9063_suspend_enable(struct regulator_dev * rdev)358 static 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
da9063_suspend_disable(struct regulator_dev * rdev)365 static 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
da9063_buck_set_suspend_mode(struct regulator_dev * rdev,unsigned int mode)372 static int da9063_buck_set_suspend_mode(struct regulator_dev *rdev,
373 unsigned int mode)
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
da9063_ldo_set_suspend_mode(struct regulator_dev * rdev,unsigned int mode)395 static int da9063_ldo_set_suspend_mode(struct regulator_dev *rdev,
396 unsigned int mode)
397 {
398 struct da9063_regulator *regl = rdev_get_drvdata(rdev);
399 unsigned int val;
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
415 static const struct regulator_ops da9063_buck_ops = {
416 .enable = regulator_enable_regmap,
417 .disable = regulator_disable_regmap,
418 .is_enabled = regulator_is_enabled_regmap,
419 .get_voltage_sel = regulator_get_voltage_sel_regmap,
420 .set_voltage_sel = regulator_set_voltage_sel_regmap,
421 .list_voltage = regulator_list_voltage_linear,
422 .set_current_limit = regulator_set_current_limit_regmap,
423 .get_current_limit = regulator_get_current_limit_regmap,
424 .set_mode = da9063_buck_set_mode,
425 .get_mode = da9063_buck_get_mode,
426 .get_status = da9063_buck_get_status,
427 .set_suspend_voltage = da9063_set_suspend_voltage,
428 .set_suspend_enable = da9063_suspend_enable,
429 .set_suspend_disable = da9063_suspend_disable,
430 .set_suspend_mode = da9063_buck_set_suspend_mode,
431 };
432
433 static const struct regulator_ops da9063_ldo_ops = {
434 .enable = regulator_enable_regmap,
435 .disable = regulator_disable_regmap,
436 .is_enabled = regulator_is_enabled_regmap,
437 .get_voltage_sel = regulator_get_voltage_sel_regmap,
438 .set_voltage_sel = regulator_set_voltage_sel_regmap,
439 .list_voltage = regulator_list_voltage_linear,
440 .set_mode = da9063_ldo_set_mode,
441 .get_mode = da9063_ldo_get_mode,
442 .get_status = da9063_ldo_get_status,
443 .set_suspend_voltage = da9063_set_suspend_voltage,
444 .set_suspend_enable = da9063_suspend_enable,
445 .set_suspend_disable = da9063_suspend_disable,
446 .set_suspend_mode = da9063_ldo_set_suspend_mode,
447 };
448
449 /* Info of regulators for DA9063 */
450 static const struct da9063_regulator_info da9063_regulator_info[] = {
451 {
452 DA9063_BUCK(DA9063, BCORE1, 300, 10, 1570,
453 da9063_buck_a_limits,
454 DA9063_REG_BUCK_ILIM_C, DA9063_BCORE1_ILIM_MASK),
455 DA9063_BUCK_COMMON_FIELDS(BCORE1),
456 },
457 {
458 DA9063_BUCK(DA9063, BCORE2, 300, 10, 1570,
459 da9063_buck_a_limits,
460 DA9063_REG_BUCK_ILIM_C, DA9063_BCORE2_ILIM_MASK),
461 DA9063_BUCK_COMMON_FIELDS(BCORE2),
462 },
463 {
464 DA9063_BUCK(DA9063, BPRO, 530, 10, 1800,
465 da9063_buck_a_limits,
466 DA9063_REG_BUCK_ILIM_B, DA9063_BPRO_ILIM_MASK),
467 DA9063_BUCK_COMMON_FIELDS(BPRO),
468 },
469 {
470 DA9063_BUCK(DA9063, BMEM, 800, 20, 3340,
471 da9063_buck_b_limits,
472 DA9063_REG_BUCK_ILIM_A, DA9063_BMEM_ILIM_MASK),
473 DA9063_BUCK_COMMON_FIELDS(BMEM),
474 },
475 {
476 DA9063_BUCK(DA9063, BIO, 800, 20, 3340,
477 da9063_buck_b_limits,
478 DA9063_REG_BUCK_ILIM_A, DA9063_BIO_ILIM_MASK),
479 DA9063_BUCK_COMMON_FIELDS(BIO),
480 },
481 {
482 DA9063_BUCK(DA9063, BPERI, 800, 20, 3340,
483 da9063_buck_b_limits,
484 DA9063_REG_BUCK_ILIM_B, DA9063_BPERI_ILIM_MASK),
485 DA9063_BUCK_COMMON_FIELDS(BPERI),
486 },
487 {
488 DA9063_BUCK(DA9063, BCORES_MERGED, 300, 10, 1570,
489 da9063_bcores_merged_limits,
490 DA9063_REG_BUCK_ILIM_C, DA9063_BCORE1_ILIM_MASK),
491 /* BCORES_MERGED uses the same register fields as BCORE1 */
492 DA9063_BUCK_COMMON_FIELDS(BCORE1),
493 },
494 {
495 DA9063_BUCK(DA9063, BMEM_BIO_MERGED, 800, 20, 3340,
496 da9063_bmem_bio_merged_limits,
497 DA9063_REG_BUCK_ILIM_A, DA9063_BMEM_ILIM_MASK),
498 /* BMEM_BIO_MERGED uses the same register fields as BMEM */
499 DA9063_BUCK_COMMON_FIELDS(BMEM),
500 },
501 {
502 DA9063_LDO(DA9063, LDO3, 900, 20, 3440),
503 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO3_LIM),
504 },
505 {
506 DA9063_LDO(DA9063, LDO7, 900, 50, 3600),
507 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO7_LIM),
508 },
509 {
510 DA9063_LDO(DA9063, LDO8, 900, 50, 3600),
511 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO8_LIM),
512 },
513 {
514 DA9063_LDO(DA9063, LDO9, 950, 50, 3600),
515 },
516 {
517 DA9063_LDO(DA9063, LDO11, 900, 50, 3600),
518 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO11_LIM),
519 },
520
521 /* The following LDOs are present only on DA9063, not on DA9063L */
522 {
523 DA9063_LDO(DA9063, LDO1, 600, 20, 1860),
524 },
525 {
526 DA9063_LDO(DA9063, LDO2, 600, 20, 1860),
527 },
528 {
529 DA9063_LDO(DA9063, LDO4, 900, 20, 3440),
530 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO4_LIM),
531 },
532 {
533 DA9063_LDO(DA9063, LDO5, 900, 50, 3600),
534 },
535 {
536 DA9063_LDO(DA9063, LDO6, 900, 50, 3600),
537 },
538
539 {
540 DA9063_LDO(DA9063, LDO10, 900, 50, 3600),
541 },
542 };
543
544 /* Link chip model with regulators info table */
545 static struct da9063_dev_model regulators_models[] = {
546 {
547 .regulator_info = da9063_regulator_info,
548 .n_regulators = ARRAY_SIZE(da9063_regulator_info),
549 .type = PMIC_TYPE_DA9063,
550 },
551 {
552 .regulator_info = da9063_regulator_info,
553 .n_regulators = ARRAY_SIZE(da9063_regulator_info) - 6,
554 .type = PMIC_TYPE_DA9063L,
555 },
556 { }
557 };
558
559 /* Regulator interrupt handlers */
da9063_ldo_lim_event(int irq,void * data)560 static irqreturn_t da9063_ldo_lim_event(int irq, void *data)
561 {
562 struct da9063_regulators *regulators = data;
563 struct da9063 *hw = regulators->regulator[0].hw;
564 struct da9063_regulator *regl;
565 int bits, i, ret;
566
567 ret = regmap_read(hw->regmap, DA9063_REG_STATUS_D, &bits);
568 if (ret < 0)
569 return IRQ_NONE;
570
571 for (i = regulators->n_regulators - 1; i >= 0; i--) {
572 regl = ®ulators->regulator[i];
573 if (regl->info->oc_event.reg != DA9063_REG_STATUS_D)
574 continue;
575
576 if (BIT(regl->info->oc_event.lsb) & bits) {
577 regulator_notifier_call_chain(regl->rdev,
578 REGULATOR_EVENT_OVER_CURRENT, NULL);
579 }
580 }
581
582 return IRQ_HANDLED;
583 }
584
585 /*
586 * Probing and Initialisation functions
587 */
da9063_get_regulator_initdata(const struct da9063_regulators_pdata * regl_pdata,int id)588 static const struct regulator_init_data *da9063_get_regulator_initdata(
589 const struct da9063_regulators_pdata *regl_pdata, int id)
590 {
591 int i;
592
593 for (i = 0; i < regl_pdata->n_regulators; i++) {
594 if (id == regl_pdata->regulator_data[i].id)
595 return regl_pdata->regulator_data[i].initdata;
596 }
597
598 return NULL;
599 }
600
601 static struct of_regulator_match da9063_matches[] = {
602 [DA9063_ID_BCORE1] = { .name = "bcore1" },
603 [DA9063_ID_BCORE2] = { .name = "bcore2" },
604 [DA9063_ID_BPRO] = { .name = "bpro", },
605 [DA9063_ID_BMEM] = { .name = "bmem", },
606 [DA9063_ID_BIO] = { .name = "bio", },
607 [DA9063_ID_BPERI] = { .name = "bperi", },
608 [DA9063_ID_BCORES_MERGED] = { .name = "bcores-merged" },
609 [DA9063_ID_BMEM_BIO_MERGED] = { .name = "bmem-bio-merged", },
610 [DA9063_ID_LDO3] = { .name = "ldo3", },
611 [DA9063_ID_LDO7] = { .name = "ldo7", },
612 [DA9063_ID_LDO8] = { .name = "ldo8", },
613 [DA9063_ID_LDO9] = { .name = "ldo9", },
614 [DA9063_ID_LDO11] = { .name = "ldo11", },
615 /* The following LDOs are present only on DA9063, not on DA9063L */
616 [DA9063_ID_LDO1] = { .name = "ldo1", },
617 [DA9063_ID_LDO2] = { .name = "ldo2", },
618 [DA9063_ID_LDO4] = { .name = "ldo4", },
619 [DA9063_ID_LDO5] = { .name = "ldo5", },
620 [DA9063_ID_LDO6] = { .name = "ldo6", },
621 [DA9063_ID_LDO10] = { .name = "ldo10", },
622 };
623
da9063_parse_regulators_dt(struct platform_device * pdev,struct of_regulator_match ** da9063_reg_matches)624 static struct da9063_regulators_pdata *da9063_parse_regulators_dt(
625 struct platform_device *pdev,
626 struct of_regulator_match **da9063_reg_matches)
627 {
628 struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent);
629 struct da9063_regulators_pdata *pdata;
630 struct da9063_regulator_data *rdata;
631 struct device_node *node;
632 int da9063_matches_len = ARRAY_SIZE(da9063_matches);
633 int i, n, num;
634
635 if (da9063->type == PMIC_TYPE_DA9063L)
636 da9063_matches_len -= 6;
637
638 node = of_get_child_by_name(pdev->dev.parent->of_node, "regulators");
639 if (!node) {
640 dev_err(&pdev->dev, "Regulators device node not found\n");
641 return ERR_PTR(-ENODEV);
642 }
643
644 num = of_regulator_match(&pdev->dev, node, da9063_matches,
645 da9063_matches_len);
646 of_node_put(node);
647 if (num < 0) {
648 dev_err(&pdev->dev, "Failed to match regulators\n");
649 return ERR_PTR(-EINVAL);
650 }
651
652 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
653 if (!pdata)
654 return ERR_PTR(-ENOMEM);
655
656 pdata->regulator_data = devm_kcalloc(&pdev->dev,
657 num, sizeof(*pdata->regulator_data),
658 GFP_KERNEL);
659 if (!pdata->regulator_data)
660 return ERR_PTR(-ENOMEM);
661 pdata->n_regulators = num;
662
663 n = 0;
664 for (i = 0; i < da9063_matches_len; i++) {
665 if (!da9063_matches[i].init_data)
666 continue;
667
668 rdata = &pdata->regulator_data[n];
669 rdata->id = i;
670 rdata->initdata = da9063_matches[i].init_data;
671
672 n++;
673 }
674
675 *da9063_reg_matches = da9063_matches;
676 return pdata;
677 }
678
da9063_regulator_probe(struct platform_device * pdev)679 static int da9063_regulator_probe(struct platform_device *pdev)
680 {
681 struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent);
682 struct of_regulator_match *da9063_reg_matches = NULL;
683 struct da9063_regulators_pdata *regl_pdata;
684 const struct da9063_dev_model *model;
685 struct da9063_regulators *regulators;
686 struct da9063_regulator *regl;
687 struct regulator_config config;
688 bool bcores_merged, bmem_bio_merged;
689 int id, irq, n, n_regulators, ret, val;
690
691 regl_pdata = da9063_parse_regulators_dt(pdev, &da9063_reg_matches);
692
693 if (IS_ERR(regl_pdata) || regl_pdata->n_regulators == 0) {
694 dev_err(&pdev->dev,
695 "No regulators defined for the platform\n");
696 return -ENODEV;
697 }
698
699 /* Find regulators set for particular device model */
700 for (model = regulators_models; model->regulator_info; model++) {
701 if (model->type == da9063->type)
702 break;
703 }
704 if (!model->regulator_info) {
705 dev_err(&pdev->dev, "Chip model not recognised (%u)\n",
706 da9063->type);
707 return -ENODEV;
708 }
709
710 ret = regmap_read(da9063->regmap, DA9063_REG_CONFIG_H, &val);
711 if (ret < 0) {
712 dev_err(&pdev->dev,
713 "Error while reading BUCKs configuration\n");
714 return ret;
715 }
716 bcores_merged = val & DA9063_BCORE_MERGE;
717 bmem_bio_merged = val & DA9063_BUCK_MERGE;
718
719 n_regulators = model->n_regulators;
720 if (bcores_merged)
721 n_regulators -= 2; /* remove BCORE1, BCORE2 */
722 else
723 n_regulators--; /* remove BCORES_MERGED */
724 if (bmem_bio_merged)
725 n_regulators -= 2; /* remove BMEM, BIO */
726 else
727 n_regulators--; /* remove BMEM_BIO_MERGED */
728
729 /* Allocate memory required by usable regulators */
730 regulators = devm_kzalloc(&pdev->dev, struct_size(regulators,
731 regulator, n_regulators), GFP_KERNEL);
732 if (!regulators)
733 return -ENOMEM;
734
735 regulators->n_regulators = n_regulators;
736 platform_set_drvdata(pdev, regulators);
737
738 /* Register all regulators declared in platform information */
739 n = 0;
740 id = 0;
741 while (n < regulators->n_regulators) {
742 /* Skip regulator IDs depending on merge mode configuration */
743 switch (id) {
744 case DA9063_ID_BCORE1:
745 case DA9063_ID_BCORE2:
746 if (bcores_merged) {
747 id++;
748 continue;
749 }
750 break;
751 case DA9063_ID_BMEM:
752 case DA9063_ID_BIO:
753 if (bmem_bio_merged) {
754 id++;
755 continue;
756 }
757 break;
758 case DA9063_ID_BCORES_MERGED:
759 if (!bcores_merged) {
760 id++;
761 continue;
762 }
763 break;
764 case DA9063_ID_BMEM_BIO_MERGED:
765 if (!bmem_bio_merged) {
766 id++;
767 continue;
768 }
769 break;
770 }
771
772 /* Initialise regulator structure */
773 regl = ®ulators->regulator[n];
774 regl->hw = da9063;
775 regl->info = &model->regulator_info[id];
776 regl->desc = regl->info->desc;
777 regl->desc.type = REGULATOR_VOLTAGE;
778 regl->desc.owner = THIS_MODULE;
779
780 if (regl->info->mode.reg) {
781 regl->mode = devm_regmap_field_alloc(&pdev->dev,
782 da9063->regmap, regl->info->mode);
783 if (IS_ERR(regl->mode))
784 return PTR_ERR(regl->mode);
785 }
786
787 if (regl->info->suspend.reg) {
788 regl->suspend = devm_regmap_field_alloc(&pdev->dev,
789 da9063->regmap, regl->info->suspend);
790 if (IS_ERR(regl->suspend))
791 return PTR_ERR(regl->suspend);
792 }
793
794 if (regl->info->sleep.reg) {
795 regl->sleep = devm_regmap_field_alloc(&pdev->dev,
796 da9063->regmap, regl->info->sleep);
797 if (IS_ERR(regl->sleep))
798 return PTR_ERR(regl->sleep);
799 }
800
801 if (regl->info->suspend_sleep.reg) {
802 regl->suspend_sleep = devm_regmap_field_alloc(&pdev->dev,
803 da9063->regmap, regl->info->suspend_sleep);
804 if (IS_ERR(regl->suspend_sleep))
805 return PTR_ERR(regl->suspend_sleep);
806 }
807
808 /* Register regulator */
809 memset(&config, 0, sizeof(config));
810 config.dev = &pdev->dev;
811 config.init_data = da9063_get_regulator_initdata(regl_pdata, id);
812 config.driver_data = regl;
813 if (da9063_reg_matches)
814 config.of_node = da9063_reg_matches[id].of_node;
815 config.regmap = da9063->regmap;
816 regl->rdev = devm_regulator_register(&pdev->dev, ®l->desc,
817 &config);
818 if (IS_ERR(regl->rdev)) {
819 dev_err(&pdev->dev,
820 "Failed to register %s regulator\n",
821 regl->desc.name);
822 return PTR_ERR(regl->rdev);
823 }
824 id++;
825 n++;
826 }
827
828 /* LDOs overcurrent event support */
829 irq = platform_get_irq_byname(pdev, "LDO_LIM");
830 if (irq < 0)
831 return irq;
832
833 ret = devm_request_threaded_irq(&pdev->dev, irq,
834 NULL, da9063_ldo_lim_event,
835 IRQF_TRIGGER_LOW | IRQF_ONESHOT,
836 "LDO_LIM", regulators);
837 if (ret)
838 dev_err(&pdev->dev, "Failed to request LDO_LIM IRQ.\n");
839
840 return ret;
841 }
842
843 static struct platform_driver da9063_regulator_driver = {
844 .driver = {
845 .name = DA9063_DRVNAME_REGULATORS,
846 },
847 .probe = da9063_regulator_probe,
848 };
849
da9063_regulator_init(void)850 static int __init da9063_regulator_init(void)
851 {
852 return platform_driver_register(&da9063_regulator_driver);
853 }
854 subsys_initcall(da9063_regulator_init);
855
da9063_regulator_cleanup(void)856 static void __exit da9063_regulator_cleanup(void)
857 {
858 platform_driver_unregister(&da9063_regulator_driver);
859 }
860 module_exit(da9063_regulator_cleanup);
861
862
863 /* Module information */
864 MODULE_AUTHOR("Krystian Garbaciak <krystian.garbaciak@diasemi.com>");
865 MODULE_DESCRIPTION("DA9063 regulators driver");
866 MODULE_LICENSE("GPL");
867 MODULE_ALIAS("platform:" DA9063_DRVNAME_REGULATORS);
868