Merge tag 'asoc-fix-v5.2-rc4' of https://git.kernel.org/pub/scm/linux/kernel/git...
[linux-2.6-microblaze.git] / drivers / regulator / da9063-regulator.c
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/pdata.h>
23 #include <linux/mfd/da9063/registers.h>
24
25
26 /* Definition for registering regmap bit fields using a mask */
27 #define BFIELD(_reg, _mask) \
28         REG_FIELD(_reg, __builtin_ffs((int)_mask) - 1, \
29                 sizeof(unsigned int) * 8 - __builtin_clz((_mask)) - 1)
30
31 /* Regulator capabilities and registers description */
32 struct da9063_regulator_info {
33         struct regulator_desc desc;
34
35         /* DA9063 main register fields */
36         struct reg_field mode;          /* buck mode of operation */
37         struct reg_field suspend;
38         struct reg_field sleep;
39         struct reg_field suspend_sleep;
40         unsigned int suspend_vsel_reg;
41
42         /* DA9063 event detection bit */
43         struct reg_field oc_event;
44 };
45
46 /* Macros for LDO */
47 #define DA9063_LDO(chip, regl_name, min_mV, step_mV, max_mV) \
48         .desc.id = chip##_ID_##regl_name, \
49         .desc.name = __stringify(chip##_##regl_name), \
50         .desc.ops = &da9063_ldo_ops, \
51         .desc.min_uV = (min_mV) * 1000, \
52         .desc.uV_step = (step_mV) * 1000, \
53         .desc.n_voltages = (((max_mV) - (min_mV))/(step_mV) + 1 \
54                 + (DA9063_V##regl_name##_BIAS)), \
55         .desc.enable_reg = DA9063_REG_##regl_name##_CONT, \
56         .desc.enable_mask = DA9063_LDO_EN, \
57         .desc.vsel_reg = DA9063_REG_V##regl_name##_A, \
58         .desc.vsel_mask = DA9063_V##regl_name##_MASK, \
59         .desc.linear_min_sel = DA9063_V##regl_name##_BIAS, \
60         .sleep = BFIELD(DA9063_REG_V##regl_name##_A, DA9063_LDO_SL), \
61         .suspend_sleep = BFIELD(DA9063_REG_V##regl_name##_B, DA9063_LDO_SL), \
62         .suspend_vsel_reg = DA9063_REG_V##regl_name##_B
63
64 /* Macros for voltage DC/DC converters (BUCKs) */
65 #define DA9063_BUCK(chip, regl_name, min_mV, step_mV, max_mV, limits_array, \
66                     creg, cmask) \
67         .desc.id = chip##_ID_##regl_name, \
68         .desc.name = __stringify(chip##_##regl_name), \
69         .desc.ops = &da9063_buck_ops, \
70         .desc.min_uV = (min_mV) * 1000, \
71         .desc.uV_step = (step_mV) * 1000, \
72         .desc.n_voltages = ((max_mV) - (min_mV))/(step_mV) + 1, \
73         .desc.csel_reg = (creg), \
74         .desc.csel_mask = (cmask), \
75         .desc.curr_table = limits_array, \
76         .desc.n_current_limits = ARRAY_SIZE(limits_array)
77
78 #define DA9063_BUCK_COMMON_FIELDS(regl_name) \
79         .desc.enable_reg = DA9063_REG_##regl_name##_CONT, \
80         .desc.enable_mask = DA9063_BUCK_EN, \
81         .desc.vsel_reg = DA9063_REG_V##regl_name##_A, \
82         .desc.vsel_mask = DA9063_VBUCK_MASK, \
83         .desc.linear_min_sel = DA9063_VBUCK_BIAS, \
84         .sleep = BFIELD(DA9063_REG_V##regl_name##_A, DA9063_BUCK_SL), \
85         .suspend_sleep = BFIELD(DA9063_REG_V##regl_name##_B, DA9063_BUCK_SL), \
86         .suspend_vsel_reg = DA9063_REG_V##regl_name##_B, \
87         .mode = BFIELD(DA9063_REG_##regl_name##_CFG, DA9063_BUCK_MODE_MASK)
88
89 /* Defines asignment of regulators info table to chip model */
90 struct da9063_dev_model {
91         const struct da9063_regulator_info      *regulator_info;
92         unsigned                                n_regulators;
93         enum da9063_type                        type;
94 };
95
96 /* Single regulator settings */
97 struct da9063_regulator {
98         struct regulator_desc                   desc;
99         struct regulator_dev                    *rdev;
100         struct da9063                           *hw;
101         const struct da9063_regulator_info      *info;
102
103         struct regmap_field                     *mode;
104         struct regmap_field                     *suspend;
105         struct regmap_field                     *sleep;
106         struct regmap_field                     *suspend_sleep;
107 };
108
109 /* Encapsulates all information for the regulators driver */
110 struct da9063_regulators {
111         unsigned                                n_regulators;
112         /* Array size to be defined during init. Keep at end. */
113         struct da9063_regulator                 regulator[0];
114 };
115
116 /* BUCK modes for DA9063 */
117 enum {
118         BUCK_MODE_MANUAL,       /* 0 */
119         BUCK_MODE_SLEEP,        /* 1 */
120         BUCK_MODE_SYNC,         /* 2 */
121         BUCK_MODE_AUTO          /* 3 */
122 };
123
124 /* Regulator operations */
125
126 /* Current limits array (in uA) for BCORE1, BCORE2, BPRO.
127    Entry indexes corresponds to register values. */
128 static const unsigned int da9063_buck_a_limits[] = {
129          500000,  600000,  700000,  800000,  900000, 1000000, 1100000, 1200000,
130         1300000, 1400000, 1500000, 1600000, 1700000, 1800000, 1900000, 2000000
131 };
132
133 /* Current limits array (in uA) for BMEM, BIO, BPERI.
134    Entry indexes corresponds to register values. */
135 static const unsigned int da9063_buck_b_limits[] = {
136         1500000, 1600000, 1700000, 1800000, 1900000, 2000000, 2100000, 2200000,
137         2300000, 2400000, 2500000, 2600000, 2700000, 2800000, 2900000, 3000000
138 };
139
140 /* Current limits array (in uA) for merged BCORE1 and BCORE2.
141    Entry indexes corresponds to register values. */
142 static const unsigned int da9063_bcores_merged_limits[] = {
143         1000000, 1200000, 1400000, 1600000, 1800000, 2000000, 2200000, 2400000,
144         2600000, 2800000, 3000000, 3200000, 3400000, 3600000, 3800000, 4000000
145 };
146
147 /* Current limits array (in uA) for merged BMEM and BIO.
148    Entry indexes corresponds to register values. */
149 static const unsigned int da9063_bmem_bio_merged_limits[] = {
150         3000000, 3200000, 3400000, 3600000, 3800000, 4000000, 4200000, 4400000,
151         4600000, 4800000, 5000000, 5200000, 5400000, 5600000, 5800000, 6000000
152 };
153
154 static int da9063_buck_set_mode(struct regulator_dev *rdev, unsigned mode)
155 {
156         struct da9063_regulator *regl = rdev_get_drvdata(rdev);
157         unsigned val;
158
159         switch (mode) {
160         case REGULATOR_MODE_FAST:
161                 val = BUCK_MODE_SYNC;
162                 break;
163         case REGULATOR_MODE_NORMAL:
164                 val = BUCK_MODE_AUTO;
165                 break;
166         case REGULATOR_MODE_STANDBY:
167                 val = BUCK_MODE_SLEEP;
168                 break;
169         default:
170                 return -EINVAL;
171         }
172
173         return regmap_field_write(regl->mode, val);
174 }
175
176 /*
177  * Bucks use single mode register field for normal operation
178  * and suspend state.
179  * There are 3 modes to map to: FAST, NORMAL, and STANDBY.
180  */
181
182 static unsigned da9063_buck_get_mode(struct regulator_dev *rdev)
183 {
184         struct da9063_regulator *regl = rdev_get_drvdata(rdev);
185         struct regmap_field *field;
186         unsigned int val, mode = 0;
187         int ret;
188
189         ret = regmap_field_read(regl->mode, &val);
190         if (ret < 0)
191                 return ret;
192
193         switch (val) {
194         default:
195         case BUCK_MODE_MANUAL:
196                 mode = REGULATOR_MODE_FAST | REGULATOR_MODE_STANDBY;
197                 /* Sleep flag bit decides the mode */
198                 break;
199         case BUCK_MODE_SLEEP:
200                 return REGULATOR_MODE_STANDBY;
201         case BUCK_MODE_SYNC:
202                 return REGULATOR_MODE_FAST;
203         case BUCK_MODE_AUTO:
204                 return REGULATOR_MODE_NORMAL;
205         }
206
207         /* Detect current regulator state */
208         ret = regmap_field_read(regl->suspend, &val);
209         if (ret < 0)
210                 return 0;
211
212         /* Read regulator mode from proper register, depending on state */
213         if (val)
214                 field = regl->suspend_sleep;
215         else
216                 field = regl->sleep;
217
218         ret = regmap_field_read(field, &val);
219         if (ret < 0)
220                 return 0;
221
222         if (val)
223                 mode &= REGULATOR_MODE_STANDBY;
224         else
225                 mode &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_FAST;
226
227         return mode;
228 }
229
230 /*
231  * LDOs use sleep flags - one for normal and one for suspend state.
232  * There are 2 modes to map to: NORMAL and STANDBY (sleep) for each state.
233  */
234
235 static int da9063_ldo_set_mode(struct regulator_dev *rdev, unsigned mode)
236 {
237         struct da9063_regulator *regl = rdev_get_drvdata(rdev);
238         unsigned val;
239
240         switch (mode) {
241         case REGULATOR_MODE_NORMAL:
242                 val = 0;
243                 break;
244         case REGULATOR_MODE_STANDBY:
245                 val = 1;
246                 break;
247         default:
248                 return -EINVAL;
249         }
250
251         return regmap_field_write(regl->sleep, val);
252 }
253
254 static unsigned da9063_ldo_get_mode(struct regulator_dev *rdev)
255 {
256         struct da9063_regulator *regl = rdev_get_drvdata(rdev);
257         struct regmap_field *field;
258         int ret, val;
259
260         /* Detect current regulator state */
261         ret = regmap_field_read(regl->suspend, &val);
262         if (ret < 0)
263                 return 0;
264
265         /* Read regulator mode from proper register, depending on state */
266         if (val)
267                 field = regl->suspend_sleep;
268         else
269                 field = regl->sleep;
270
271         ret = regmap_field_read(field, &val);
272         if (ret < 0)
273                 return 0;
274
275         if (val)
276                 return REGULATOR_MODE_STANDBY;
277         else
278                 return REGULATOR_MODE_NORMAL;
279 }
280
281 static int da9063_buck_get_status(struct regulator_dev *rdev)
282 {
283         int ret = regulator_is_enabled_regmap(rdev);
284
285         if (ret == 0) {
286                 ret = REGULATOR_STATUS_OFF;
287         } else if (ret > 0) {
288                 ret = da9063_buck_get_mode(rdev);
289                 if (ret > 0)
290                         ret = regulator_mode_to_status(ret);
291                 else if (ret == 0)
292                         ret = -EIO;
293         }
294
295         return ret;
296 }
297
298 static int da9063_ldo_get_status(struct regulator_dev *rdev)
299 {
300         int ret = regulator_is_enabled_regmap(rdev);
301
302         if (ret == 0) {
303                 ret = REGULATOR_STATUS_OFF;
304         } else if (ret > 0) {
305                 ret = da9063_ldo_get_mode(rdev);
306                 if (ret > 0)
307                         ret = regulator_mode_to_status(ret);
308                 else if (ret == 0)
309                         ret = -EIO;
310         }
311
312         return ret;
313 }
314
315 static int da9063_set_suspend_voltage(struct regulator_dev *rdev, int uV)
316 {
317         struct da9063_regulator *regl = rdev_get_drvdata(rdev);
318         const struct da9063_regulator_info *rinfo = regl->info;
319         int ret, sel;
320
321         sel = regulator_map_voltage_linear(rdev, uV, uV);
322         if (sel < 0)
323                 return sel;
324
325         sel <<= ffs(rdev->desc->vsel_mask) - 1;
326
327         ret = regmap_update_bits(regl->hw->regmap, rinfo->suspend_vsel_reg,
328                                  rdev->desc->vsel_mask, sel);
329
330         return ret;
331 }
332
333 static int da9063_suspend_enable(struct regulator_dev *rdev)
334 {
335         struct da9063_regulator *regl = rdev_get_drvdata(rdev);
336
337         return regmap_field_write(regl->suspend, 1);
338 }
339
340 static int da9063_suspend_disable(struct regulator_dev *rdev)
341 {
342         struct da9063_regulator *regl = rdev_get_drvdata(rdev);
343
344         return regmap_field_write(regl->suspend, 0);
345 }
346
347 static int da9063_buck_set_suspend_mode(struct regulator_dev *rdev, unsigned mode)
348 {
349         struct da9063_regulator *regl = rdev_get_drvdata(rdev);
350         int val;
351
352         switch (mode) {
353         case REGULATOR_MODE_FAST:
354                 val = BUCK_MODE_SYNC;
355                 break;
356         case REGULATOR_MODE_NORMAL:
357                 val = BUCK_MODE_AUTO;
358                 break;
359         case REGULATOR_MODE_STANDBY:
360                 val = BUCK_MODE_SLEEP;
361                 break;
362         default:
363                 return -EINVAL;
364         }
365
366         return regmap_field_write(regl->mode, val);
367 }
368
369 static int da9063_ldo_set_suspend_mode(struct regulator_dev *rdev, unsigned mode)
370 {
371         struct da9063_regulator *regl = rdev_get_drvdata(rdev);
372         unsigned val;
373
374         switch (mode) {
375         case REGULATOR_MODE_NORMAL:
376                 val = 0;
377                 break;
378         case REGULATOR_MODE_STANDBY:
379                 val = 1;
380                 break;
381         default:
382                 return -EINVAL;
383         }
384
385         return regmap_field_write(regl->suspend_sleep, val);
386 }
387
388 static const struct regulator_ops da9063_buck_ops = {
389         .enable                 = regulator_enable_regmap,
390         .disable                = regulator_disable_regmap,
391         .is_enabled             = regulator_is_enabled_regmap,
392         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
393         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
394         .list_voltage           = regulator_list_voltage_linear,
395         .set_current_limit      = regulator_set_current_limit_regmap,
396         .get_current_limit      = regulator_get_current_limit_regmap,
397         .set_mode               = da9063_buck_set_mode,
398         .get_mode               = da9063_buck_get_mode,
399         .get_status             = da9063_buck_get_status,
400         .set_suspend_voltage    = da9063_set_suspend_voltage,
401         .set_suspend_enable     = da9063_suspend_enable,
402         .set_suspend_disable    = da9063_suspend_disable,
403         .set_suspend_mode       = da9063_buck_set_suspend_mode,
404 };
405
406 static const struct regulator_ops da9063_ldo_ops = {
407         .enable                 = regulator_enable_regmap,
408         .disable                = regulator_disable_regmap,
409         .is_enabled             = regulator_is_enabled_regmap,
410         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
411         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
412         .list_voltage           = regulator_list_voltage_linear,
413         .set_mode               = da9063_ldo_set_mode,
414         .get_mode               = da9063_ldo_get_mode,
415         .get_status             = da9063_ldo_get_status,
416         .set_suspend_voltage    = da9063_set_suspend_voltage,
417         .set_suspend_enable     = da9063_suspend_enable,
418         .set_suspend_disable    = da9063_suspend_disable,
419         .set_suspend_mode       = da9063_ldo_set_suspend_mode,
420 };
421
422 /* Info of regulators for DA9063 */
423 static const struct da9063_regulator_info da9063_regulator_info[] = {
424         {
425                 DA9063_BUCK(DA9063, BCORE1, 300, 10, 1570,
426                             da9063_buck_a_limits,
427                             DA9063_REG_BUCK_ILIM_C, DA9063_BCORE1_ILIM_MASK),
428                 DA9063_BUCK_COMMON_FIELDS(BCORE1),
429                 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE1_SEL),
430         },
431         {
432                 DA9063_BUCK(DA9063, BCORE2, 300, 10, 1570,
433                             da9063_buck_a_limits,
434                             DA9063_REG_BUCK_ILIM_C, DA9063_BCORE2_ILIM_MASK),
435                 DA9063_BUCK_COMMON_FIELDS(BCORE2),
436                 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE2_SEL),
437         },
438         {
439                 DA9063_BUCK(DA9063, BPRO, 530, 10, 1800,
440                             da9063_buck_a_limits,
441                             DA9063_REG_BUCK_ILIM_B, DA9063_BPRO_ILIM_MASK),
442                 DA9063_BUCK_COMMON_FIELDS(BPRO),
443                 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBPRO_SEL),
444         },
445         {
446                 DA9063_BUCK(DA9063, BMEM, 800, 20, 3340,
447                             da9063_buck_b_limits,
448                             DA9063_REG_BUCK_ILIM_A, DA9063_BMEM_ILIM_MASK),
449                 DA9063_BUCK_COMMON_FIELDS(BMEM),
450                 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBMEM_SEL),
451         },
452         {
453                 DA9063_BUCK(DA9063, BIO, 800, 20, 3340,
454                             da9063_buck_b_limits,
455                             DA9063_REG_BUCK_ILIM_A, DA9063_BIO_ILIM_MASK),
456                 DA9063_BUCK_COMMON_FIELDS(BIO),
457                 .suspend = BFIELD(DA9063_REG_DVC_2, DA9063_VBIO_SEL),
458         },
459         {
460                 DA9063_BUCK(DA9063, BPERI, 800, 20, 3340,
461                             da9063_buck_b_limits,
462                             DA9063_REG_BUCK_ILIM_B, DA9063_BPERI_ILIM_MASK),
463                 DA9063_BUCK_COMMON_FIELDS(BPERI),
464                 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBPERI_SEL),
465         },
466         {
467                 DA9063_BUCK(DA9063, BCORES_MERGED, 300, 10, 1570,
468                             da9063_bcores_merged_limits,
469                             DA9063_REG_BUCK_ILIM_C, DA9063_BCORE1_ILIM_MASK),
470                 /* BCORES_MERGED uses the same register fields as BCORE1 */
471                 DA9063_BUCK_COMMON_FIELDS(BCORE1),
472                 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE1_SEL),
473         },
474         {
475                 DA9063_BUCK(DA9063, BMEM_BIO_MERGED, 800, 20, 3340,
476                             da9063_bmem_bio_merged_limits,
477                             DA9063_REG_BUCK_ILIM_A, DA9063_BMEM_ILIM_MASK),
478                 /* BMEM_BIO_MERGED uses the same register fields as BMEM */
479                 DA9063_BUCK_COMMON_FIELDS(BMEM),
480                 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBMEM_SEL),
481         },
482         {
483                 DA9063_LDO(DA9063, LDO3, 900, 20, 3440),
484                 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VLDO3_SEL),
485                 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO3_LIM),
486         },
487         {
488                 DA9063_LDO(DA9063, LDO7, 900, 50, 3600),
489                 .suspend = BFIELD(DA9063_REG_LDO7_CONT, DA9063_VLDO7_SEL),
490                 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO7_LIM),
491         },
492         {
493                 DA9063_LDO(DA9063, LDO8, 900, 50, 3600),
494                 .suspend = BFIELD(DA9063_REG_LDO8_CONT, DA9063_VLDO8_SEL),
495                 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO8_LIM),
496         },
497         {
498                 DA9063_LDO(DA9063, LDO9, 950, 50, 3600),
499                 .suspend = BFIELD(DA9063_REG_LDO9_CONT, DA9063_VLDO9_SEL),
500         },
501         {
502                 DA9063_LDO(DA9063, LDO11, 900, 50, 3600),
503                 .suspend = BFIELD(DA9063_REG_LDO11_CONT, DA9063_VLDO11_SEL),
504                 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO11_LIM),
505         },
506
507         /* The following LDOs are present only on DA9063, not on DA9063L */
508         {
509                 DA9063_LDO(DA9063, LDO1, 600, 20, 1860),
510                 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VLDO1_SEL),
511         },
512         {
513                 DA9063_LDO(DA9063, LDO2, 600, 20, 1860),
514                 .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VLDO2_SEL),
515         },
516         {
517                 DA9063_LDO(DA9063, LDO4, 900, 20, 3440),
518                 .suspend = BFIELD(DA9063_REG_DVC_2, DA9063_VLDO4_SEL),
519                 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO4_LIM),
520         },
521         {
522                 DA9063_LDO(DA9063, LDO5, 900, 50, 3600),
523                 .suspend = BFIELD(DA9063_REG_LDO5_CONT, DA9063_VLDO5_SEL),
524         },
525         {
526                 DA9063_LDO(DA9063, LDO6, 900, 50, 3600),
527                 .suspend = BFIELD(DA9063_REG_LDO6_CONT, DA9063_VLDO6_SEL),
528         },
529
530         {
531                 DA9063_LDO(DA9063, LDO10, 900, 50, 3600),
532                 .suspend = BFIELD(DA9063_REG_LDO10_CONT, DA9063_VLDO10_SEL),
533         },
534 };
535
536 /* Link chip model with regulators info table */
537 static struct da9063_dev_model regulators_models[] = {
538         {
539                 .regulator_info = da9063_regulator_info,
540                 .n_regulators = ARRAY_SIZE(da9063_regulator_info),
541                 .type = PMIC_TYPE_DA9063,
542         },
543         {
544                 .regulator_info = da9063_regulator_info,
545                 .n_regulators = ARRAY_SIZE(da9063_regulator_info) - 6,
546                 .type = PMIC_TYPE_DA9063L,
547         },
548         { }
549 };
550
551 /* Regulator interrupt handlers */
552 static irqreturn_t da9063_ldo_lim_event(int irq, void *data)
553 {
554         struct da9063_regulators *regulators = data;
555         struct da9063 *hw = regulators->regulator[0].hw;
556         struct da9063_regulator *regl;
557         int bits, i , ret;
558
559         ret = regmap_read(hw->regmap, DA9063_REG_STATUS_D, &bits);
560         if (ret < 0)
561                 return IRQ_NONE;
562
563         for (i = regulators->n_regulators - 1; i >= 0; i--) {
564                 regl = &regulators->regulator[i];
565                 if (regl->info->oc_event.reg != DA9063_REG_STATUS_D)
566                         continue;
567
568                 if (BIT(regl->info->oc_event.lsb) & bits) {
569                         regulator_lock(regl->rdev);
570                         regulator_notifier_call_chain(regl->rdev,
571                                         REGULATOR_EVENT_OVER_CURRENT, NULL);
572                         regulator_unlock(regl->rdev);
573                 }
574         }
575
576         return IRQ_HANDLED;
577 }
578
579 /*
580  * Probing and Initialisation functions
581  */
582 static const struct regulator_init_data *da9063_get_regulator_initdata(
583                 const struct da9063_regulators_pdata *regl_pdata, int id)
584 {
585         int i;
586
587         for (i = 0; i < regl_pdata->n_regulators; i++) {
588                 if (id == regl_pdata->regulator_data[i].id)
589                         return regl_pdata->regulator_data[i].initdata;
590         }
591
592         return NULL;
593 }
594
595 #ifdef CONFIG_OF
596 static struct of_regulator_match da9063_matches[] = {
597         [DA9063_ID_BCORE1]           = { .name = "bcore1"           },
598         [DA9063_ID_BCORE2]           = { .name = "bcore2"           },
599         [DA9063_ID_BPRO]             = { .name = "bpro",            },
600         [DA9063_ID_BMEM]             = { .name = "bmem",            },
601         [DA9063_ID_BIO]              = { .name = "bio",             },
602         [DA9063_ID_BPERI]            = { .name = "bperi",           },
603         [DA9063_ID_BCORES_MERGED]    = { .name = "bcores-merged"    },
604         [DA9063_ID_BMEM_BIO_MERGED]  = { .name = "bmem-bio-merged", },
605         [DA9063_ID_LDO3]             = { .name = "ldo3",            },
606         [DA9063_ID_LDO7]             = { .name = "ldo7",            },
607         [DA9063_ID_LDO8]             = { .name = "ldo8",            },
608         [DA9063_ID_LDO9]             = { .name = "ldo9",            },
609         [DA9063_ID_LDO11]            = { .name = "ldo11",           },
610         /* The following LDOs are present only on DA9063, not on DA9063L */
611         [DA9063_ID_LDO1]             = { .name = "ldo1",            },
612         [DA9063_ID_LDO2]             = { .name = "ldo2",            },
613         [DA9063_ID_LDO4]             = { .name = "ldo4",            },
614         [DA9063_ID_LDO5]             = { .name = "ldo5",            },
615         [DA9063_ID_LDO6]             = { .name = "ldo6",            },
616         [DA9063_ID_LDO10]            = { .name = "ldo10",           },
617 };
618
619 static struct da9063_regulators_pdata *da9063_parse_regulators_dt(
620                 struct platform_device *pdev,
621                 struct of_regulator_match **da9063_reg_matches)
622 {
623         struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent);
624         struct da9063_regulators_pdata *pdata;
625         struct da9063_regulator_data *rdata;
626         struct device_node *node;
627         int da9063_matches_len = ARRAY_SIZE(da9063_matches);
628         int i, n, num;
629
630         if (da9063->type == PMIC_TYPE_DA9063L)
631                 da9063_matches_len -= 6;
632
633         node = of_get_child_by_name(pdev->dev.parent->of_node, "regulators");
634         if (!node) {
635                 dev_err(&pdev->dev, "Regulators device node not found\n");
636                 return ERR_PTR(-ENODEV);
637         }
638
639         num = of_regulator_match(&pdev->dev, node, da9063_matches,
640                                  da9063_matches_len);
641         of_node_put(node);
642         if (num < 0) {
643                 dev_err(&pdev->dev, "Failed to match regulators\n");
644                 return ERR_PTR(-EINVAL);
645         }
646
647         pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
648         if (!pdata)
649                 return ERR_PTR(-ENOMEM);
650
651         pdata->regulator_data = devm_kcalloc(&pdev->dev,
652                                         num, sizeof(*pdata->regulator_data),
653                                         GFP_KERNEL);
654         if (!pdata->regulator_data)
655                 return ERR_PTR(-ENOMEM);
656         pdata->n_regulators = num;
657
658         n = 0;
659         for (i = 0; i < da9063_matches_len; i++) {
660                 if (!da9063_matches[i].init_data)
661                         continue;
662
663                 rdata = &pdata->regulator_data[n];
664                 rdata->id = i;
665                 rdata->initdata = da9063_matches[i].init_data;
666
667                 n++;
668         }
669
670         *da9063_reg_matches = da9063_matches;
671         return pdata;
672 }
673 #else
674 static struct da9063_regulators_pdata *da9063_parse_regulators_dt(
675                 struct platform_device *pdev,
676                 struct of_regulator_match **da9063_reg_matches)
677 {
678         *da9063_reg_matches = NULL;
679         return ERR_PTR(-ENODEV);
680 }
681 #endif
682
683 static int da9063_regulator_probe(struct platform_device *pdev)
684 {
685         struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent);
686         struct da9063_pdata *da9063_pdata = dev_get_platdata(da9063->dev);
687         struct of_regulator_match *da9063_reg_matches = NULL;
688         struct da9063_regulators_pdata *regl_pdata;
689         const struct da9063_dev_model *model;
690         struct da9063_regulators *regulators;
691         struct da9063_regulator *regl;
692         struct regulator_config config;
693         bool bcores_merged, bmem_bio_merged;
694         int id, irq, n, n_regulators, ret, val;
695
696         regl_pdata = da9063_pdata ? da9063_pdata->regulators_pdata : NULL;
697
698         if (!regl_pdata)
699                 regl_pdata = da9063_parse_regulators_dt(pdev,
700                                                         &da9063_reg_matches);
701
702         if (IS_ERR(regl_pdata) || regl_pdata->n_regulators == 0) {
703                 dev_err(&pdev->dev,
704                         "No regulators defined for the platform\n");
705                 return -ENODEV;
706         }
707
708         /* Find regulators set for particular device model */
709         for (model = regulators_models; model->regulator_info; model++) {
710                 if (model->type == da9063->type)
711                         break;
712         }
713         if (!model->regulator_info) {
714                 dev_err(&pdev->dev, "Chip model not recognised (%u)\n",
715                         da9063->type);
716                 return -ENODEV;
717         }
718
719         ret = regmap_read(da9063->regmap, DA9063_REG_CONFIG_H, &val);
720         if (ret < 0) {
721                 dev_err(&pdev->dev,
722                         "Error while reading BUCKs configuration\n");
723                 return ret;
724         }
725         bcores_merged = val & DA9063_BCORE_MERGE;
726         bmem_bio_merged = val & DA9063_BUCK_MERGE;
727
728         n_regulators = model->n_regulators;
729         if (bcores_merged)
730                 n_regulators -= 2; /* remove BCORE1, BCORE2 */
731         else
732                 n_regulators--;    /* remove BCORES_MERGED */
733         if (bmem_bio_merged)
734                 n_regulators -= 2; /* remove BMEM, BIO */
735         else
736                 n_regulators--;    /* remove BMEM_BIO_MERGED */
737
738         /* Allocate memory required by usable regulators */
739         regulators = devm_kzalloc(&pdev->dev, struct_size(regulators,
740                                   regulator, n_regulators), GFP_KERNEL);
741         if (!regulators)
742                 return -ENOMEM;
743
744         regulators->n_regulators = n_regulators;
745         platform_set_drvdata(pdev, regulators);
746
747         /* Register all regulators declared in platform information */
748         n = 0;
749         id = 0;
750         while (n < regulators->n_regulators) {
751                 /* Skip regulator IDs depending on merge mode configuration */
752                 switch (id) {
753                 case DA9063_ID_BCORE1:
754                 case DA9063_ID_BCORE2:
755                         if (bcores_merged) {
756                                 id++;
757                                 continue;
758                         }
759                         break;
760                 case DA9063_ID_BMEM:
761                 case DA9063_ID_BIO:
762                         if (bmem_bio_merged) {
763                                 id++;
764                                 continue;
765                         }
766                         break;
767                 case DA9063_ID_BCORES_MERGED:
768                         if (!bcores_merged) {
769                                 id++;
770                                 continue;
771                         }
772                         break;
773                 case DA9063_ID_BMEM_BIO_MERGED:
774                         if (!bmem_bio_merged) {
775                                 id++;
776                                 continue;
777                         }
778                         break;
779                 }
780
781                 /* Initialise regulator structure */
782                 regl = &regulators->regulator[n];
783                 regl->hw = da9063;
784                 regl->info = &model->regulator_info[id];
785                 regl->desc = regl->info->desc;
786                 regl->desc.type = REGULATOR_VOLTAGE;
787                 regl->desc.owner = THIS_MODULE;
788
789                 if (regl->info->mode.reg) {
790                         regl->mode = devm_regmap_field_alloc(&pdev->dev,
791                                         da9063->regmap, regl->info->mode);
792                         if (IS_ERR(regl->mode))
793                                 return PTR_ERR(regl->mode);
794                 }
795
796                 if (regl->info->suspend.reg) {
797                         regl->suspend = devm_regmap_field_alloc(&pdev->dev,
798                                         da9063->regmap, regl->info->suspend);
799                         if (IS_ERR(regl->suspend))
800                                 return PTR_ERR(regl->suspend);
801                 }
802
803                 if (regl->info->sleep.reg) {
804                         regl->sleep = devm_regmap_field_alloc(&pdev->dev,
805                                         da9063->regmap, regl->info->sleep);
806                         if (IS_ERR(regl->sleep))
807                                 return PTR_ERR(regl->sleep);
808                 }
809
810                 if (regl->info->suspend_sleep.reg) {
811                         regl->suspend_sleep = devm_regmap_field_alloc(&pdev->dev,
812                                         da9063->regmap, regl->info->suspend_sleep);
813                         if (IS_ERR(regl->suspend_sleep))
814                                 return PTR_ERR(regl->suspend_sleep);
815                 }
816
817                 /* Register regulator */
818                 memset(&config, 0, sizeof(config));
819                 config.dev = &pdev->dev;
820                 config.init_data = da9063_get_regulator_initdata(regl_pdata, id);
821                 config.driver_data = regl;
822                 if (da9063_reg_matches)
823                         config.of_node = da9063_reg_matches[id].of_node;
824                 config.regmap = da9063->regmap;
825                 regl->rdev = devm_regulator_register(&pdev->dev, &regl->desc,
826                                                      &config);
827                 if (IS_ERR(regl->rdev)) {
828                         dev_err(&pdev->dev,
829                                 "Failed to register %s regulator\n",
830                                 regl->desc.name);
831                         return PTR_ERR(regl->rdev);
832                 }
833                 id++;
834                 n++;
835         }
836
837         /* LDOs overcurrent event support */
838         irq = platform_get_irq_byname(pdev, "LDO_LIM");
839         if (irq < 0) {
840                 dev_err(&pdev->dev, "Failed to get IRQ.\n");
841                 return irq;
842         }
843
844         ret = devm_request_threaded_irq(&pdev->dev, irq,
845                                 NULL, da9063_ldo_lim_event,
846                                 IRQF_TRIGGER_LOW | IRQF_ONESHOT,
847                                 "LDO_LIM", regulators);
848         if (ret) {
849                 dev_err(&pdev->dev, "Failed to request LDO_LIM IRQ.\n");
850                 return ret;
851         }
852
853         return 0;
854 }
855
856 static struct platform_driver da9063_regulator_driver = {
857         .driver = {
858                 .name = DA9063_DRVNAME_REGULATORS,
859         },
860         .probe = da9063_regulator_probe,
861 };
862
863 static int __init da9063_regulator_init(void)
864 {
865         return platform_driver_register(&da9063_regulator_driver);
866 }
867 subsys_initcall(da9063_regulator_init);
868
869 static void __exit da9063_regulator_cleanup(void)
870 {
871         platform_driver_unregister(&da9063_regulator_driver);
872 }
873 module_exit(da9063_regulator_cleanup);
874
875
876 /* Module information */
877 MODULE_AUTHOR("Krystian Garbaciak <krystian.garbaciak@diasemi.com>");
878 MODULE_DESCRIPTION("DA9063 regulators driver");
879 MODULE_LICENSE("GPL");
880 MODULE_ALIAS("platform:" DA9063_DRVNAME_REGULATORS);