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1// SPDX-License-Identifier: GPL-2.0+
2//
3// Regulator device driver for DA9061 and DA9062.
4// Copyright (C) 2015-2017 Dialog Semiconductor
5
6#include <linux/kernel.h>
7#include <linux/module.h>
8#include <linux/init.h>
9#include <linux/err.h>
10#include <linux/slab.h>
11#include <linux/of.h>
12#include <linux/platform_device.h>
13#include <linux/regmap.h>
14#include <linux/regulator/driver.h>
15#include <linux/regulator/machine.h>
16#include <linux/regulator/of_regulator.h>
17#include <linux/mfd/da9062/core.h>
18#include <linux/mfd/da9062/registers.h>
19#include <dt-bindings/regulator/dlg,da9063-regulator.h>
20
21/* Regulator IDs */
22enum {
23 DA9061_ID_BUCK1,
24 DA9061_ID_BUCK2,
25 DA9061_ID_BUCK3,
26 DA9061_ID_LDO1,
27 DA9061_ID_LDO2,
28 DA9061_ID_LDO3,
29 DA9061_ID_LDO4,
30 DA9061_MAX_REGULATORS,
31};
32
33enum {
34 DA9062_ID_BUCK1,
35 DA9062_ID_BUCK2,
36 DA9062_ID_BUCK3,
37 DA9062_ID_BUCK4,
38 DA9062_ID_LDO1,
39 DA9062_ID_LDO2,
40 DA9062_ID_LDO3,
41 DA9062_ID_LDO4,
42 DA9062_MAX_REGULATORS,
43};
44
45/* Regulator capabilities and registers description */
46struct da9062_regulator_info {
47 struct regulator_desc desc;
48 /* Main register fields */
49 struct reg_field mode;
50 struct reg_field suspend;
51 struct reg_field sleep;
52 struct reg_field suspend_sleep;
53 unsigned int suspend_vsel_reg;
54 /* Event detection bit */
55 struct reg_field oc_event;
56};
57
58/* Single regulator settings */
59struct da9062_regulator {
60 struct regulator_desc desc;
61 struct regulator_dev *rdev;
62 struct da9062 *hw;
63 const struct da9062_regulator_info *info;
64
65 struct regmap_field *mode;
66 struct regmap_field *suspend;
67 struct regmap_field *sleep;
68 struct regmap_field *suspend_sleep;
69};
70
71/* Encapsulates all information for the regulators driver */
72struct da9062_regulators {
73 int irq_ldo_lim;
74 unsigned n_regulators;
75 /* Array size to be defined during init. Keep at end. */
76 struct da9062_regulator regulator[] __counted_by(n_regulators);
77};
78
79/* Regulator operations */
80
81/* Current limits array (in uA)
82 * - DA9061_ID_[BUCK1|BUCK3]
83 * - DA9062_ID_[BUCK1|BUCK2|BUCK4]
84 * Entry indexes corresponds to register values.
85 */
86static const unsigned int da9062_buck_a_limits[] = {
87 500000, 600000, 700000, 800000, 900000, 1000000, 1100000, 1200000,
88 1300000, 1400000, 1500000, 1600000, 1700000, 1800000, 1900000, 2000000
89};
90
91/* Current limits array (in uA)
92 * - DA9061_ID_BUCK2
93 * - DA9062_ID_BUCK3
94 * Entry indexes corresponds to register values.
95 */
96static const unsigned int da9062_buck_b_limits[] = {
97 1500000, 1600000, 1700000, 1800000, 1900000, 2000000, 2100000, 2200000,
98 2300000, 2400000, 2500000, 2600000, 2700000, 2800000, 2900000, 3000000
99};
100
101static unsigned int da9062_map_buck_mode(unsigned int mode)
102{
103 switch (mode) {
104 case DA9063_BUCK_MODE_SLEEP:
105 return REGULATOR_MODE_STANDBY;
106 case DA9063_BUCK_MODE_SYNC:
107 return REGULATOR_MODE_FAST;
108 case DA9063_BUCK_MODE_AUTO:
109 return REGULATOR_MODE_NORMAL;
110 default:
111 return REGULATOR_MODE_INVALID;
112 }
113}
114
115static int da9062_buck_set_mode(struct regulator_dev *rdev, unsigned mode)
116{
117 struct da9062_regulator *regl = rdev_get_drvdata(rdev);
118 unsigned val;
119
120 switch (mode) {
121 case REGULATOR_MODE_FAST:
122 val = DA9063_BUCK_MODE_SYNC;
123 break;
124 case REGULATOR_MODE_NORMAL:
125 val = DA9063_BUCK_MODE_AUTO;
126 break;
127 case REGULATOR_MODE_STANDBY:
128 val = DA9063_BUCK_MODE_SLEEP;
129 break;
130 default:
131 return -EINVAL;
132 }
133
134 return regmap_field_write(regl->mode, val);
135}
136
137/*
138 * Bucks use single mode register field for normal operation
139 * and suspend state.
140 * There are 3 modes to map to: FAST, NORMAL, and STANDBY.
141 */
142
143static unsigned da9062_buck_get_mode(struct regulator_dev *rdev)
144{
145 struct da9062_regulator *regl = rdev_get_drvdata(rdev);
146 unsigned int val;
147 int ret;
148
149 ret = regmap_field_read(regl->mode, &val);
150 if (ret < 0)
151 return ret;
152
153 switch (val) {
154 default:
155 /* Sleep flag bit decides the mode */
156 break;
157 case DA9063_BUCK_MODE_SLEEP:
158 return REGULATOR_MODE_STANDBY;
159 case DA9063_BUCK_MODE_SYNC:
160 return REGULATOR_MODE_FAST;
161 case DA9063_BUCK_MODE_AUTO:
162 return REGULATOR_MODE_NORMAL;
163 }
164
165 ret = regmap_field_read(regl->sleep, &val);
166 if (ret < 0)
167 return 0;
168
169 if (val)
170 return REGULATOR_MODE_STANDBY;
171 else
172 return REGULATOR_MODE_FAST;
173}
174
175/*
176 * LDOs use sleep flags - one for normal and one for suspend state.
177 * There are 2 modes to map to: NORMAL and STANDBY (sleep) for each state.
178 */
179
180static int da9062_ldo_set_mode(struct regulator_dev *rdev, unsigned mode)
181{
182 struct da9062_regulator *regl = rdev_get_drvdata(rdev);
183 unsigned val;
184
185 switch (mode) {
186 case REGULATOR_MODE_NORMAL:
187 val = 0;
188 break;
189 case REGULATOR_MODE_STANDBY:
190 val = 1;
191 break;
192 default:
193 return -EINVAL;
194 }
195
196 return regmap_field_write(regl->sleep, val);
197}
198
199static unsigned da9062_ldo_get_mode(struct regulator_dev *rdev)
200{
201 struct da9062_regulator *regl = rdev_get_drvdata(rdev);
202 int ret, val;
203
204 ret = regmap_field_read(regl->sleep, &val);
205 if (ret < 0)
206 return 0;
207
208 if (val)
209 return REGULATOR_MODE_STANDBY;
210 else
211 return REGULATOR_MODE_NORMAL;
212}
213
214static int da9062_buck_get_status(struct regulator_dev *rdev)
215{
216 int ret = regulator_is_enabled_regmap(rdev);
217
218 if (ret == 0) {
219 ret = REGULATOR_STATUS_OFF;
220 } else if (ret > 0) {
221 ret = da9062_buck_get_mode(rdev);
222 if (ret > 0)
223 ret = regulator_mode_to_status(ret);
224 else if (ret == 0)
225 ret = -EIO;
226 }
227
228 return ret;
229}
230
231static int da9062_ldo_get_status(struct regulator_dev *rdev)
232{
233 int ret = regulator_is_enabled_regmap(rdev);
234
235 if (ret == 0) {
236 ret = REGULATOR_STATUS_OFF;
237 } else if (ret > 0) {
238 ret = da9062_ldo_get_mode(rdev);
239 if (ret > 0)
240 ret = regulator_mode_to_status(ret);
241 else if (ret == 0)
242 ret = -EIO;
243 }
244
245 return ret;
246}
247
248static int da9062_set_suspend_voltage(struct regulator_dev *rdev, int uv)
249{
250 struct da9062_regulator *regl = rdev_get_drvdata(rdev);
251 const struct da9062_regulator_info *rinfo = regl->info;
252 int ret, sel;
253
254 sel = regulator_map_voltage_linear(rdev, uv, uv);
255 if (sel < 0)
256 return sel;
257
258 sel <<= ffs(rdev->desc->vsel_mask) - 1;
259
260 ret = regmap_update_bits(regl->hw->regmap, rinfo->suspend_vsel_reg,
261 rdev->desc->vsel_mask, sel);
262
263 return ret;
264}
265
266static int da9062_suspend_enable(struct regulator_dev *rdev)
267{
268 struct da9062_regulator *regl = rdev_get_drvdata(rdev);
269
270 return regmap_field_write(regl->suspend, 1);
271}
272
273static int da9062_suspend_disable(struct regulator_dev *rdev)
274{
275 struct da9062_regulator *regl = rdev_get_drvdata(rdev);
276
277 return regmap_field_write(regl->suspend, 0);
278}
279
280static int da9062_buck_set_suspend_mode(struct regulator_dev *rdev,
281 unsigned mode)
282{
283 struct da9062_regulator *regl = rdev_get_drvdata(rdev);
284 int val;
285
286 switch (mode) {
287 case REGULATOR_MODE_FAST:
288 val = DA9063_BUCK_MODE_SYNC;
289 break;
290 case REGULATOR_MODE_NORMAL:
291 val = DA9063_BUCK_MODE_AUTO;
292 break;
293 case REGULATOR_MODE_STANDBY:
294 val = DA9063_BUCK_MODE_SLEEP;
295 break;
296 default:
297 return -EINVAL;
298 }
299
300 return regmap_field_write(regl->mode, val);
301}
302
303static int da9062_ldo_set_suspend_mode(struct regulator_dev *rdev,
304 unsigned mode)
305{
306 struct da9062_regulator *regl = rdev_get_drvdata(rdev);
307 unsigned val;
308
309 switch (mode) {
310 case REGULATOR_MODE_NORMAL:
311 val = 0;
312 break;
313 case REGULATOR_MODE_STANDBY:
314 val = 1;
315 break;
316 default:
317 return -EINVAL;
318 }
319
320 return regmap_field_write(regl->suspend_sleep, val);
321}
322
323static const struct regulator_ops da9062_buck_ops = {
324 .enable = regulator_enable_regmap,
325 .disable = regulator_disable_regmap,
326 .is_enabled = regulator_is_enabled_regmap,
327 .get_voltage_sel = regulator_get_voltage_sel_regmap,
328 .set_voltage_sel = regulator_set_voltage_sel_regmap,
329 .list_voltage = regulator_list_voltage_linear,
330 .set_current_limit = regulator_set_current_limit_regmap,
331 .get_current_limit = regulator_get_current_limit_regmap,
332 .set_mode = da9062_buck_set_mode,
333 .get_mode = da9062_buck_get_mode,
334 .get_status = da9062_buck_get_status,
335 .set_suspend_voltage = da9062_set_suspend_voltage,
336 .set_suspend_enable = da9062_suspend_enable,
337 .set_suspend_disable = da9062_suspend_disable,
338 .set_suspend_mode = da9062_buck_set_suspend_mode,
339};
340
341static const struct regulator_ops da9062_ldo_ops = {
342 .enable = regulator_enable_regmap,
343 .disable = regulator_disable_regmap,
344 .is_enabled = regulator_is_enabled_regmap,
345 .get_voltage_sel = regulator_get_voltage_sel_regmap,
346 .set_voltage_sel = regulator_set_voltage_sel_regmap,
347 .list_voltage = regulator_list_voltage_linear,
348 .set_mode = da9062_ldo_set_mode,
349 .get_mode = da9062_ldo_get_mode,
350 .get_status = da9062_ldo_get_status,
351 .set_suspend_voltage = da9062_set_suspend_voltage,
352 .set_suspend_enable = da9062_suspend_enable,
353 .set_suspend_disable = da9062_suspend_disable,
354 .set_suspend_mode = da9062_ldo_set_suspend_mode,
355};
356
357/* DA9061 Regulator information */
358static const struct da9062_regulator_info local_da9061_regulator_info[] = {
359 {
360 .desc.id = DA9061_ID_BUCK1,
361 .desc.name = "DA9061 BUCK1",
362 .desc.of_match = of_match_ptr("buck1"),
363 .desc.regulators_node = of_match_ptr("regulators"),
364 .desc.ops = &da9062_buck_ops,
365 .desc.min_uV = (300) * 1000,
366 .desc.uV_step = (10) * 1000,
367 .desc.n_voltages = ((1570) - (300))/(10) + 1,
368 .desc.curr_table = da9062_buck_a_limits,
369 .desc.n_current_limits = ARRAY_SIZE(da9062_buck_a_limits),
370 .desc.csel_reg = DA9062AA_BUCK_ILIM_C,
371 .desc.csel_mask = DA9062AA_BUCK1_ILIM_MASK,
372 .desc.enable_reg = DA9062AA_BUCK1_CONT,
373 .desc.enable_mask = DA9062AA_BUCK1_EN_MASK,
374 .desc.vsel_reg = DA9062AA_VBUCK1_A,
375 .desc.vsel_mask = DA9062AA_VBUCK1_A_MASK,
376 .desc.linear_min_sel = 0,
377 .desc.of_map_mode = da9062_map_buck_mode,
378 .sleep = REG_FIELD(DA9062AA_VBUCK1_A,
379 __builtin_ffs((int)DA9062AA_BUCK1_SL_A_MASK) - 1,
380 sizeof(unsigned int) * 8 -
381 __builtin_clz((DA9062AA_BUCK1_SL_A_MASK)) - 1),
382 .suspend_sleep = REG_FIELD(DA9062AA_VBUCK1_B,
383 __builtin_ffs((int)DA9062AA_BUCK1_SL_B_MASK) - 1,
384 sizeof(unsigned int) * 8 -
385 __builtin_clz((DA9062AA_BUCK1_SL_B_MASK)) - 1),
386 .suspend_vsel_reg = DA9062AA_VBUCK1_B,
387 .mode = REG_FIELD(DA9062AA_BUCK1_CFG,
388 __builtin_ffs((int)DA9062AA_BUCK1_MODE_MASK) - 1,
389 sizeof(unsigned int) * 8 -
390 __builtin_clz((DA9062AA_BUCK1_MODE_MASK)) - 1),
391 .suspend = REG_FIELD(DA9062AA_BUCK1_CONT,
392 __builtin_ffs((int)DA9062AA_BUCK1_CONF_MASK) - 1,
393 sizeof(unsigned int) * 8 -
394 __builtin_clz(DA9062AA_BUCK1_CONF_MASK) - 1),
395 },
396 {
397 .desc.id = DA9061_ID_BUCK2,
398 .desc.name = "DA9061 BUCK2",
399 .desc.of_match = of_match_ptr("buck2"),
400 .desc.regulators_node = of_match_ptr("regulators"),
401 .desc.ops = &da9062_buck_ops,
402 .desc.min_uV = (800) * 1000,
403 .desc.uV_step = (20) * 1000,
404 .desc.n_voltages = ((3340) - (800))/(20) + 1,
405 .desc.curr_table = da9062_buck_b_limits,
406 .desc.n_current_limits = ARRAY_SIZE(da9062_buck_b_limits),
407 .desc.csel_reg = DA9062AA_BUCK_ILIM_A,
408 .desc.csel_mask = DA9062AA_BUCK3_ILIM_MASK,
409 .desc.enable_reg = DA9062AA_BUCK3_CONT,
410 .desc.enable_mask = DA9062AA_BUCK3_EN_MASK,
411 .desc.vsel_reg = DA9062AA_VBUCK3_A,
412 .desc.vsel_mask = DA9062AA_VBUCK3_A_MASK,
413 .desc.linear_min_sel = 0,
414 .desc.of_map_mode = da9062_map_buck_mode,
415 .sleep = REG_FIELD(DA9062AA_VBUCK3_A,
416 __builtin_ffs((int)DA9062AA_BUCK3_SL_A_MASK) - 1,
417 sizeof(unsigned int) * 8 -
418 __builtin_clz((DA9062AA_BUCK3_SL_A_MASK)) - 1),
419 .suspend_sleep = REG_FIELD(DA9062AA_VBUCK3_B,
420 __builtin_ffs((int)DA9062AA_BUCK3_SL_B_MASK) - 1,
421 sizeof(unsigned int) * 8 -
422 __builtin_clz((DA9062AA_BUCK3_SL_B_MASK)) - 1),
423 .suspend_vsel_reg = DA9062AA_VBUCK3_B,
424 .mode = REG_FIELD(DA9062AA_BUCK3_CFG,
425 __builtin_ffs((int)DA9062AA_BUCK3_MODE_MASK) - 1,
426 sizeof(unsigned int) * 8 -
427 __builtin_clz((DA9062AA_BUCK3_MODE_MASK)) - 1),
428 .suspend = REG_FIELD(DA9062AA_BUCK3_CONT,
429 __builtin_ffs((int)DA9062AA_BUCK3_CONF_MASK) - 1,
430 sizeof(unsigned int) * 8 -
431 __builtin_clz(DA9062AA_BUCK3_CONF_MASK) - 1),
432 },
433 {
434 .desc.id = DA9061_ID_BUCK3,
435 .desc.name = "DA9061 BUCK3",
436 .desc.of_match = of_match_ptr("buck3"),
437 .desc.regulators_node = of_match_ptr("regulators"),
438 .desc.ops = &da9062_buck_ops,
439 .desc.min_uV = (530) * 1000,
440 .desc.uV_step = (10) * 1000,
441 .desc.n_voltages = ((1800) - (530))/(10) + 1,
442 .desc.curr_table = da9062_buck_a_limits,
443 .desc.n_current_limits = ARRAY_SIZE(da9062_buck_a_limits),
444 .desc.csel_reg = DA9062AA_BUCK_ILIM_B,
445 .desc.csel_mask = DA9062AA_BUCK4_ILIM_MASK,
446 .desc.enable_reg = DA9062AA_BUCK4_CONT,
447 .desc.enable_mask = DA9062AA_BUCK4_EN_MASK,
448 .desc.vsel_reg = DA9062AA_VBUCK4_A,
449 .desc.vsel_mask = DA9062AA_VBUCK4_A_MASK,
450 .desc.linear_min_sel = 0,
451 .desc.of_map_mode = da9062_map_buck_mode,
452 .sleep = REG_FIELD(DA9062AA_VBUCK4_A,
453 __builtin_ffs((int)DA9062AA_BUCK4_SL_A_MASK) - 1,
454 sizeof(unsigned int) * 8 -
455 __builtin_clz((DA9062AA_BUCK4_SL_A_MASK)) - 1),
456 .suspend_sleep = REG_FIELD(DA9062AA_VBUCK4_B,
457 __builtin_ffs((int)DA9062AA_BUCK4_SL_B_MASK) - 1,
458 sizeof(unsigned int) * 8 -
459 __builtin_clz((DA9062AA_BUCK4_SL_B_MASK)) - 1),
460 .suspend_vsel_reg = DA9062AA_VBUCK4_B,
461 .mode = REG_FIELD(DA9062AA_BUCK4_CFG,
462 __builtin_ffs((int)DA9062AA_BUCK4_MODE_MASK) - 1,
463 sizeof(unsigned int) * 8 -
464 __builtin_clz((DA9062AA_BUCK4_MODE_MASK)) - 1),
465 .suspend = REG_FIELD(DA9062AA_BUCK4_CONT,
466 __builtin_ffs((int)DA9062AA_BUCK4_CONF_MASK) - 1,
467 sizeof(unsigned int) * 8 -
468 __builtin_clz(DA9062AA_BUCK4_CONF_MASK) - 1),
469 },
470 {
471 .desc.id = DA9061_ID_LDO1,
472 .desc.name = "DA9061 LDO1",
473 .desc.of_match = of_match_ptr("ldo1"),
474 .desc.regulators_node = of_match_ptr("regulators"),
475 .desc.ops = &da9062_ldo_ops,
476 .desc.min_uV = (900) * 1000,
477 .desc.uV_step = (50) * 1000,
478 .desc.n_voltages = ((3600) - (900))/(50) + 1
479 + DA9062AA_VLDO_A_MIN_SEL,
480 .desc.enable_reg = DA9062AA_LDO1_CONT,
481 .desc.enable_mask = DA9062AA_LDO1_EN_MASK,
482 .desc.vsel_reg = DA9062AA_VLDO1_A,
483 .desc.vsel_mask = DA9062AA_VLDO1_A_MASK,
484 .desc.linear_min_sel = DA9062AA_VLDO_A_MIN_SEL,
485 .sleep = REG_FIELD(DA9062AA_VLDO1_A,
486 __builtin_ffs((int)DA9062AA_LDO1_SL_A_MASK) - 1,
487 sizeof(unsigned int) * 8 -
488 __builtin_clz((DA9062AA_LDO1_SL_A_MASK)) - 1),
489 .suspend_sleep = REG_FIELD(DA9062AA_VLDO1_B,
490 __builtin_ffs((int)DA9062AA_LDO1_SL_B_MASK) - 1,
491 sizeof(unsigned int) * 8 -
492 __builtin_clz((DA9062AA_LDO1_SL_B_MASK)) - 1),
493 .suspend_vsel_reg = DA9062AA_VLDO1_B,
494 .suspend = REG_FIELD(DA9062AA_LDO1_CONT,
495 __builtin_ffs((int)DA9062AA_LDO1_CONF_MASK) - 1,
496 sizeof(unsigned int) * 8 -
497 __builtin_clz(DA9062AA_LDO1_CONF_MASK) - 1),
498 .oc_event = REG_FIELD(DA9062AA_STATUS_D,
499 __builtin_ffs((int)DA9062AA_LDO1_ILIM_MASK) - 1,
500 sizeof(unsigned int) * 8 -
501 __builtin_clz((DA9062AA_LDO1_ILIM_MASK)) - 1),
502 },
503 {
504 .desc.id = DA9061_ID_LDO2,
505 .desc.name = "DA9061 LDO2",
506 .desc.of_match = of_match_ptr("ldo2"),
507 .desc.regulators_node = of_match_ptr("regulators"),
508 .desc.ops = &da9062_ldo_ops,
509 .desc.min_uV = (900) * 1000,
510 .desc.uV_step = (50) * 1000,
511 .desc.n_voltages = ((3600) - (900))/(50) + 1
512 + DA9062AA_VLDO_A_MIN_SEL,
513 .desc.enable_reg = DA9062AA_LDO2_CONT,
514 .desc.enable_mask = DA9062AA_LDO2_EN_MASK,
515 .desc.vsel_reg = DA9062AA_VLDO2_A,
516 .desc.vsel_mask = DA9062AA_VLDO2_A_MASK,
517 .desc.linear_min_sel = DA9062AA_VLDO_A_MIN_SEL,
518 .sleep = REG_FIELD(DA9062AA_VLDO2_A,
519 __builtin_ffs((int)DA9062AA_LDO2_SL_A_MASK) - 1,
520 sizeof(unsigned int) * 8 -
521 __builtin_clz((DA9062AA_LDO2_SL_A_MASK)) - 1),
522 .suspend_sleep = REG_FIELD(DA9062AA_VLDO2_B,
523 __builtin_ffs((int)DA9062AA_LDO2_SL_B_MASK) - 1,
524 sizeof(unsigned int) * 8 -
525 __builtin_clz((DA9062AA_LDO2_SL_B_MASK)) - 1),
526 .suspend_vsel_reg = DA9062AA_VLDO2_B,
527 .suspend = REG_FIELD(DA9062AA_LDO2_CONT,
528 __builtin_ffs((int)DA9062AA_LDO2_CONF_MASK) - 1,
529 sizeof(unsigned int) * 8 -
530 __builtin_clz(DA9062AA_LDO2_CONF_MASK) - 1),
531 .oc_event = REG_FIELD(DA9062AA_STATUS_D,
532 __builtin_ffs((int)DA9062AA_LDO2_ILIM_MASK) - 1,
533 sizeof(unsigned int) * 8 -
534 __builtin_clz((DA9062AA_LDO2_ILIM_MASK)) - 1),
535 },
536 {
537 .desc.id = DA9061_ID_LDO3,
538 .desc.name = "DA9061 LDO3",
539 .desc.of_match = of_match_ptr("ldo3"),
540 .desc.regulators_node = of_match_ptr("regulators"),
541 .desc.ops = &da9062_ldo_ops,
542 .desc.min_uV = (900) * 1000,
543 .desc.uV_step = (50) * 1000,
544 .desc.n_voltages = ((3600) - (900))/(50) + 1
545 + DA9062AA_VLDO_A_MIN_SEL,
546 .desc.enable_reg = DA9062AA_LDO3_CONT,
547 .desc.enable_mask = DA9062AA_LDO3_EN_MASK,
548 .desc.vsel_reg = DA9062AA_VLDO3_A,
549 .desc.vsel_mask = DA9062AA_VLDO3_A_MASK,
550 .desc.linear_min_sel = DA9062AA_VLDO_A_MIN_SEL,
551 .sleep = REG_FIELD(DA9062AA_VLDO3_A,
552 __builtin_ffs((int)DA9062AA_LDO3_SL_A_MASK) - 1,
553 sizeof(unsigned int) * 8 -
554 __builtin_clz((DA9062AA_LDO3_SL_A_MASK)) - 1),
555 .suspend_sleep = REG_FIELD(DA9062AA_VLDO3_B,
556 __builtin_ffs((int)DA9062AA_LDO3_SL_B_MASK) - 1,
557 sizeof(unsigned int) * 8 -
558 __builtin_clz((DA9062AA_LDO3_SL_B_MASK)) - 1),
559 .suspend_vsel_reg = DA9062AA_VLDO3_B,
560 .suspend = REG_FIELD(DA9062AA_LDO3_CONT,
561 __builtin_ffs((int)DA9062AA_LDO3_CONF_MASK) - 1,
562 sizeof(unsigned int) * 8 -
563 __builtin_clz(DA9062AA_LDO3_CONF_MASK) - 1),
564 .oc_event = REG_FIELD(DA9062AA_STATUS_D,
565 __builtin_ffs((int)DA9062AA_LDO3_ILIM_MASK) - 1,
566 sizeof(unsigned int) * 8 -
567 __builtin_clz((DA9062AA_LDO3_ILIM_MASK)) - 1),
568 },
569 {
570 .desc.id = DA9061_ID_LDO4,
571 .desc.name = "DA9061 LDO4",
572 .desc.of_match = of_match_ptr("ldo4"),
573 .desc.regulators_node = of_match_ptr("regulators"),
574 .desc.ops = &da9062_ldo_ops,
575 .desc.min_uV = (900) * 1000,
576 .desc.uV_step = (50) * 1000,
577 .desc.n_voltages = ((3600) - (900))/(50) + 1
578 + DA9062AA_VLDO_A_MIN_SEL,
579 .desc.enable_reg = DA9062AA_LDO4_CONT,
580 .desc.enable_mask = DA9062AA_LDO4_EN_MASK,
581 .desc.vsel_reg = DA9062AA_VLDO4_A,
582 .desc.vsel_mask = DA9062AA_VLDO4_A_MASK,
583 .desc.linear_min_sel = DA9062AA_VLDO_A_MIN_SEL,
584 .sleep = REG_FIELD(DA9062AA_VLDO4_A,
585 __builtin_ffs((int)DA9062AA_LDO4_SL_A_MASK) - 1,
586 sizeof(unsigned int) * 8 -
587 __builtin_clz((DA9062AA_LDO4_SL_A_MASK)) - 1),
588 .suspend_sleep = REG_FIELD(DA9062AA_VLDO4_B,
589 __builtin_ffs((int)DA9062AA_LDO4_SL_B_MASK) - 1,
590 sizeof(unsigned int) * 8 -
591 __builtin_clz((DA9062AA_LDO4_SL_B_MASK)) - 1),
592 .suspend_vsel_reg = DA9062AA_VLDO4_B,
593 .suspend = REG_FIELD(DA9062AA_LDO4_CONT,
594 __builtin_ffs((int)DA9062AA_LDO4_CONF_MASK) - 1,
595 sizeof(unsigned int) * 8 -
596 __builtin_clz(DA9062AA_LDO4_CONF_MASK) - 1),
597 .oc_event = REG_FIELD(DA9062AA_STATUS_D,
598 __builtin_ffs((int)DA9062AA_LDO4_ILIM_MASK) - 1,
599 sizeof(unsigned int) * 8 -
600 __builtin_clz((DA9062AA_LDO4_ILIM_MASK)) - 1),
601 },
602};
603
604/* DA9062 Regulator information */
605static const struct da9062_regulator_info local_da9062_regulator_info[] = {
606 {
607 .desc.id = DA9062_ID_BUCK1,
608 .desc.name = "DA9062 BUCK1",
609 .desc.of_match = of_match_ptr("buck1"),
610 .desc.regulators_node = of_match_ptr("regulators"),
611 .desc.ops = &da9062_buck_ops,
612 .desc.min_uV = (300) * 1000,
613 .desc.uV_step = (10) * 1000,
614 .desc.n_voltages = ((1570) - (300))/(10) + 1,
615 .desc.curr_table = da9062_buck_a_limits,
616 .desc.n_current_limits = ARRAY_SIZE(da9062_buck_a_limits),
617 .desc.csel_reg = DA9062AA_BUCK_ILIM_C,
618 .desc.csel_mask = DA9062AA_BUCK1_ILIM_MASK,
619 .desc.enable_reg = DA9062AA_BUCK1_CONT,
620 .desc.enable_mask = DA9062AA_BUCK1_EN_MASK,
621 .desc.vsel_reg = DA9062AA_VBUCK1_A,
622 .desc.vsel_mask = DA9062AA_VBUCK1_A_MASK,
623 .desc.linear_min_sel = 0,
624 .desc.of_map_mode = da9062_map_buck_mode,
625 .sleep = REG_FIELD(DA9062AA_VBUCK1_A,
626 __builtin_ffs((int)DA9062AA_BUCK1_SL_A_MASK) - 1,
627 sizeof(unsigned int) * 8 -
628 __builtin_clz((DA9062AA_BUCK1_SL_A_MASK)) - 1),
629 .suspend_sleep = REG_FIELD(DA9062AA_VBUCK1_B,
630 __builtin_ffs((int)DA9062AA_BUCK1_SL_B_MASK) - 1,
631 sizeof(unsigned int) * 8 -
632 __builtin_clz((DA9062AA_BUCK1_SL_B_MASK)) - 1),
633 .suspend_vsel_reg = DA9062AA_VBUCK1_B,
634 .mode = REG_FIELD(DA9062AA_BUCK1_CFG,
635 __builtin_ffs((int)DA9062AA_BUCK1_MODE_MASK) - 1,
636 sizeof(unsigned int) * 8 -
637 __builtin_clz((DA9062AA_BUCK1_MODE_MASK)) - 1),
638 .suspend = REG_FIELD(DA9062AA_BUCK1_CONT,
639 __builtin_ffs((int)DA9062AA_BUCK1_CONF_MASK) - 1,
640 sizeof(unsigned int) * 8 -
641 __builtin_clz(DA9062AA_BUCK1_CONF_MASK) - 1),
642 },
643 {
644 .desc.id = DA9062_ID_BUCK2,
645 .desc.name = "DA9062 BUCK2",
646 .desc.of_match = of_match_ptr("buck2"),
647 .desc.regulators_node = of_match_ptr("regulators"),
648 .desc.ops = &da9062_buck_ops,
649 .desc.min_uV = (300) * 1000,
650 .desc.uV_step = (10) * 1000,
651 .desc.n_voltages = ((1570) - (300))/(10) + 1,
652 .desc.curr_table = da9062_buck_a_limits,
653 .desc.n_current_limits = ARRAY_SIZE(da9062_buck_a_limits),
654 .desc.csel_reg = DA9062AA_BUCK_ILIM_C,
655 .desc.csel_mask = DA9062AA_BUCK2_ILIM_MASK,
656 .desc.enable_reg = DA9062AA_BUCK2_CONT,
657 .desc.enable_mask = DA9062AA_BUCK2_EN_MASK,
658 .desc.vsel_reg = DA9062AA_VBUCK2_A,
659 .desc.vsel_mask = DA9062AA_VBUCK2_A_MASK,
660 .desc.linear_min_sel = 0,
661 .desc.of_map_mode = da9062_map_buck_mode,
662 .sleep = REG_FIELD(DA9062AA_VBUCK2_A,
663 __builtin_ffs((int)DA9062AA_BUCK2_SL_A_MASK) - 1,
664 sizeof(unsigned int) * 8 -
665 __builtin_clz((DA9062AA_BUCK2_SL_A_MASK)) - 1),
666 .suspend_sleep = REG_FIELD(DA9062AA_VBUCK2_B,
667 __builtin_ffs((int)DA9062AA_BUCK2_SL_B_MASK) - 1,
668 sizeof(unsigned int) * 8 -
669 __builtin_clz((DA9062AA_BUCK2_SL_B_MASK)) - 1),
670 .suspend_vsel_reg = DA9062AA_VBUCK2_B,
671 .mode = REG_FIELD(DA9062AA_BUCK2_CFG,
672 __builtin_ffs((int)DA9062AA_BUCK2_MODE_MASK) - 1,
673 sizeof(unsigned int) * 8 -
674 __builtin_clz((DA9062AA_BUCK2_MODE_MASK)) - 1),
675 .suspend = REG_FIELD(DA9062AA_BUCK2_CONT,
676 __builtin_ffs((int)DA9062AA_BUCK2_CONF_MASK) - 1,
677 sizeof(unsigned int) * 8 -
678 __builtin_clz(DA9062AA_BUCK2_CONF_MASK) - 1),
679 },
680 {
681 .desc.id = DA9062_ID_BUCK3,
682 .desc.name = "DA9062 BUCK3",
683 .desc.of_match = of_match_ptr("buck3"),
684 .desc.regulators_node = of_match_ptr("regulators"),
685 .desc.ops = &da9062_buck_ops,
686 .desc.min_uV = (800) * 1000,
687 .desc.uV_step = (20) * 1000,
688 .desc.n_voltages = ((3340) - (800))/(20) + 1,
689 .desc.curr_table = da9062_buck_b_limits,
690 .desc.n_current_limits = ARRAY_SIZE(da9062_buck_b_limits),
691 .desc.csel_reg = DA9062AA_BUCK_ILIM_A,
692 .desc.csel_mask = DA9062AA_BUCK3_ILIM_MASK,
693 .desc.enable_reg = DA9062AA_BUCK3_CONT,
694 .desc.enable_mask = DA9062AA_BUCK3_EN_MASK,
695 .desc.vsel_reg = DA9062AA_VBUCK3_A,
696 .desc.vsel_mask = DA9062AA_VBUCK3_A_MASK,
697 .desc.linear_min_sel = 0,
698 .desc.of_map_mode = da9062_map_buck_mode,
699 .sleep = REG_FIELD(DA9062AA_VBUCK3_A,
700 __builtin_ffs((int)DA9062AA_BUCK3_SL_A_MASK) - 1,
701 sizeof(unsigned int) * 8 -
702 __builtin_clz((DA9062AA_BUCK3_SL_A_MASK)) - 1),
703 .suspend_sleep = REG_FIELD(DA9062AA_VBUCK3_B,
704 __builtin_ffs((int)DA9062AA_BUCK3_SL_B_MASK) - 1,
705 sizeof(unsigned int) * 8 -
706 __builtin_clz((DA9062AA_BUCK3_SL_B_MASK)) - 1),
707 .suspend_vsel_reg = DA9062AA_VBUCK3_B,
708 .mode = REG_FIELD(DA9062AA_BUCK3_CFG,
709 __builtin_ffs((int)DA9062AA_BUCK3_MODE_MASK) - 1,
710 sizeof(unsigned int) * 8 -
711 __builtin_clz((DA9062AA_BUCK3_MODE_MASK)) - 1),
712 .suspend = REG_FIELD(DA9062AA_BUCK3_CONT,
713 __builtin_ffs((int)DA9062AA_BUCK3_CONF_MASK) - 1,
714 sizeof(unsigned int) * 8 -
715 __builtin_clz(DA9062AA_BUCK3_CONF_MASK) - 1),
716 },
717 {
718 .desc.id = DA9062_ID_BUCK4,
719 .desc.name = "DA9062 BUCK4",
720 .desc.of_match = of_match_ptr("buck4"),
721 .desc.regulators_node = of_match_ptr("regulators"),
722 .desc.ops = &da9062_buck_ops,
723 .desc.min_uV = (530) * 1000,
724 .desc.uV_step = (10) * 1000,
725 .desc.n_voltages = ((1800) - (530))/(10) + 1,
726 .desc.curr_table = da9062_buck_a_limits,
727 .desc.n_current_limits = ARRAY_SIZE(da9062_buck_a_limits),
728 .desc.csel_reg = DA9062AA_BUCK_ILIM_B,
729 .desc.csel_mask = DA9062AA_BUCK4_ILIM_MASK,
730 .desc.enable_reg = DA9062AA_BUCK4_CONT,
731 .desc.enable_mask = DA9062AA_BUCK4_EN_MASK,
732 .desc.vsel_reg = DA9062AA_VBUCK4_A,
733 .desc.vsel_mask = DA9062AA_VBUCK4_A_MASK,
734 .desc.linear_min_sel = 0,
735 .desc.of_map_mode = da9062_map_buck_mode,
736 .sleep = REG_FIELD(DA9062AA_VBUCK4_A,
737 __builtin_ffs((int)DA9062AA_BUCK4_SL_A_MASK) - 1,
738 sizeof(unsigned int) * 8 -
739 __builtin_clz((DA9062AA_BUCK4_SL_A_MASK)) - 1),
740 .suspend_sleep = REG_FIELD(DA9062AA_VBUCK4_B,
741 __builtin_ffs((int)DA9062AA_BUCK4_SL_B_MASK) - 1,
742 sizeof(unsigned int) * 8 -
743 __builtin_clz((DA9062AA_BUCK4_SL_B_MASK)) - 1),
744 .suspend_vsel_reg = DA9062AA_VBUCK4_B,
745 .mode = REG_FIELD(DA9062AA_BUCK4_CFG,
746 __builtin_ffs((int)DA9062AA_BUCK4_MODE_MASK) - 1,
747 sizeof(unsigned int) * 8 -
748 __builtin_clz((DA9062AA_BUCK4_MODE_MASK)) - 1),
749 .suspend = REG_FIELD(DA9062AA_BUCK4_CONT,
750 __builtin_ffs((int)DA9062AA_BUCK4_CONF_MASK) - 1,
751 sizeof(unsigned int) * 8 -
752 __builtin_clz(DA9062AA_BUCK4_CONF_MASK) - 1),
753 },
754 {
755 .desc.id = DA9062_ID_LDO1,
756 .desc.name = "DA9062 LDO1",
757 .desc.of_match = of_match_ptr("ldo1"),
758 .desc.regulators_node = of_match_ptr("regulators"),
759 .desc.ops = &da9062_ldo_ops,
760 .desc.min_uV = (900) * 1000,
761 .desc.uV_step = (50) * 1000,
762 .desc.n_voltages = ((3600) - (900))/(50) + 1
763 + DA9062AA_VLDO_A_MIN_SEL,
764 .desc.enable_reg = DA9062AA_LDO1_CONT,
765 .desc.enable_mask = DA9062AA_LDO1_EN_MASK,
766 .desc.vsel_reg = DA9062AA_VLDO1_A,
767 .desc.vsel_mask = DA9062AA_VLDO1_A_MASK,
768 .desc.linear_min_sel = DA9062AA_VLDO_A_MIN_SEL,
769 .sleep = REG_FIELD(DA9062AA_VLDO1_A,
770 __builtin_ffs((int)DA9062AA_LDO1_SL_A_MASK) - 1,
771 sizeof(unsigned int) * 8 -
772 __builtin_clz((DA9062AA_LDO1_SL_A_MASK)) - 1),
773 .suspend_sleep = REG_FIELD(DA9062AA_VLDO1_B,
774 __builtin_ffs((int)DA9062AA_LDO1_SL_B_MASK) - 1,
775 sizeof(unsigned int) * 8 -
776 __builtin_clz((DA9062AA_LDO1_SL_B_MASK)) - 1),
777 .suspend_vsel_reg = DA9062AA_VLDO1_B,
778 .suspend = REG_FIELD(DA9062AA_LDO1_CONT,
779 __builtin_ffs((int)DA9062AA_LDO1_CONF_MASK) - 1,
780 sizeof(unsigned int) * 8 -
781 __builtin_clz(DA9062AA_LDO1_CONF_MASK) - 1),
782 .oc_event = REG_FIELD(DA9062AA_STATUS_D,
783 __builtin_ffs((int)DA9062AA_LDO1_ILIM_MASK) - 1,
784 sizeof(unsigned int) * 8 -
785 __builtin_clz((DA9062AA_LDO1_ILIM_MASK)) - 1),
786 },
787 {
788 .desc.id = DA9062_ID_LDO2,
789 .desc.name = "DA9062 LDO2",
790 .desc.of_match = of_match_ptr("ldo2"),
791 .desc.regulators_node = of_match_ptr("regulators"),
792 .desc.ops = &da9062_ldo_ops,
793 .desc.min_uV = (900) * 1000,
794 .desc.uV_step = (50) * 1000,
795 .desc.n_voltages = ((3600) - (900))/(50) + 1
796 + DA9062AA_VLDO_A_MIN_SEL,
797 .desc.enable_reg = DA9062AA_LDO2_CONT,
798 .desc.enable_mask = DA9062AA_LDO2_EN_MASK,
799 .desc.vsel_reg = DA9062AA_VLDO2_A,
800 .desc.vsel_mask = DA9062AA_VLDO2_A_MASK,
801 .desc.linear_min_sel = DA9062AA_VLDO_A_MIN_SEL,
802 .sleep = REG_FIELD(DA9062AA_VLDO2_A,
803 __builtin_ffs((int)DA9062AA_LDO2_SL_A_MASK) - 1,
804 sizeof(unsigned int) * 8 -
805 __builtin_clz((DA9062AA_LDO2_SL_A_MASK)) - 1),
806 .suspend_sleep = REG_FIELD(DA9062AA_VLDO2_B,
807 __builtin_ffs((int)DA9062AA_LDO2_SL_B_MASK) - 1,
808 sizeof(unsigned int) * 8 -
809 __builtin_clz((DA9062AA_LDO2_SL_B_MASK)) - 1),
810 .suspend_vsel_reg = DA9062AA_VLDO2_B,
811 .suspend = REG_FIELD(DA9062AA_LDO2_CONT,
812 __builtin_ffs((int)DA9062AA_LDO2_CONF_MASK) - 1,
813 sizeof(unsigned int) * 8 -
814 __builtin_clz(DA9062AA_LDO2_CONF_MASK) - 1),
815 .oc_event = REG_FIELD(DA9062AA_STATUS_D,
816 __builtin_ffs((int)DA9062AA_LDO2_ILIM_MASK) - 1,
817 sizeof(unsigned int) * 8 -
818 __builtin_clz((DA9062AA_LDO2_ILIM_MASK)) - 1),
819 },
820 {
821 .desc.id = DA9062_ID_LDO3,
822 .desc.name = "DA9062 LDO3",
823 .desc.of_match = of_match_ptr("ldo3"),
824 .desc.regulators_node = of_match_ptr("regulators"),
825 .desc.ops = &da9062_ldo_ops,
826 .desc.min_uV = (900) * 1000,
827 .desc.uV_step = (50) * 1000,
828 .desc.n_voltages = ((3600) - (900))/(50) + 1
829 + DA9062AA_VLDO_A_MIN_SEL,
830 .desc.enable_reg = DA9062AA_LDO3_CONT,
831 .desc.enable_mask = DA9062AA_LDO3_EN_MASK,
832 .desc.vsel_reg = DA9062AA_VLDO3_A,
833 .desc.vsel_mask = DA9062AA_VLDO3_A_MASK,
834 .desc.linear_min_sel = DA9062AA_VLDO_A_MIN_SEL,
835 .sleep = REG_FIELD(DA9062AA_VLDO3_A,
836 __builtin_ffs((int)DA9062AA_LDO3_SL_A_MASK) - 1,
837 sizeof(unsigned int) * 8 -
838 __builtin_clz((DA9062AA_LDO3_SL_A_MASK)) - 1),
839 .suspend_sleep = REG_FIELD(DA9062AA_VLDO3_B,
840 __builtin_ffs((int)DA9062AA_LDO3_SL_B_MASK) - 1,
841 sizeof(unsigned int) * 8 -
842 __builtin_clz((DA9062AA_LDO3_SL_B_MASK)) - 1),
843 .suspend_vsel_reg = DA9062AA_VLDO3_B,
844 .suspend = REG_FIELD(DA9062AA_LDO3_CONT,
845 __builtin_ffs((int)DA9062AA_LDO3_CONF_MASK) - 1,
846 sizeof(unsigned int) * 8 -
847 __builtin_clz(DA9062AA_LDO3_CONF_MASK) - 1),
848 .oc_event = REG_FIELD(DA9062AA_STATUS_D,
849 __builtin_ffs((int)DA9062AA_LDO3_ILIM_MASK) - 1,
850 sizeof(unsigned int) * 8 -
851 __builtin_clz((DA9062AA_LDO3_ILIM_MASK)) - 1),
852 },
853 {
854 .desc.id = DA9062_ID_LDO4,
855 .desc.name = "DA9062 LDO4",
856 .desc.of_match = of_match_ptr("ldo4"),
857 .desc.regulators_node = of_match_ptr("regulators"),
858 .desc.ops = &da9062_ldo_ops,
859 .desc.min_uV = (900) * 1000,
860 .desc.uV_step = (50) * 1000,
861 .desc.n_voltages = ((3600) - (900))/(50) + 1
862 + DA9062AA_VLDO_A_MIN_SEL,
863 .desc.enable_reg = DA9062AA_LDO4_CONT,
864 .desc.enable_mask = DA9062AA_LDO4_EN_MASK,
865 .desc.vsel_reg = DA9062AA_VLDO4_A,
866 .desc.vsel_mask = DA9062AA_VLDO4_A_MASK,
867 .desc.linear_min_sel = DA9062AA_VLDO_A_MIN_SEL,
868 .sleep = REG_FIELD(DA9062AA_VLDO4_A,
869 __builtin_ffs((int)DA9062AA_LDO4_SL_A_MASK) - 1,
870 sizeof(unsigned int) * 8 -
871 __builtin_clz((DA9062AA_LDO4_SL_A_MASK)) - 1),
872 .suspend_sleep = REG_FIELD(DA9062AA_VLDO4_B,
873 __builtin_ffs((int)DA9062AA_LDO4_SL_B_MASK) - 1,
874 sizeof(unsigned int) * 8 -
875 __builtin_clz((DA9062AA_LDO4_SL_B_MASK)) - 1),
876 .suspend_vsel_reg = DA9062AA_VLDO4_B,
877 .suspend = REG_FIELD(DA9062AA_LDO4_CONT,
878 __builtin_ffs((int)DA9062AA_LDO4_CONF_MASK) - 1,
879 sizeof(unsigned int) * 8 -
880 __builtin_clz(DA9062AA_LDO4_CONF_MASK) - 1),
881 .oc_event = REG_FIELD(DA9062AA_STATUS_D,
882 __builtin_ffs((int)DA9062AA_LDO4_ILIM_MASK) - 1,
883 sizeof(unsigned int) * 8 -
884 __builtin_clz((DA9062AA_LDO4_ILIM_MASK)) - 1),
885 },
886};
887
888/* Regulator interrupt handlers */
889static irqreturn_t da9062_ldo_lim_event(int irq, void *data)
890{
891 struct da9062_regulators *regulators = data;
892 struct da9062 *hw = regulators->regulator[0].hw;
893 struct da9062_regulator *regl;
894 int handled = IRQ_NONE;
895 int bits, i, ret;
896
897 ret = regmap_read(hw->regmap, DA9062AA_STATUS_D, &bits);
898 if (ret < 0) {
899 dev_err(hw->dev,
900 "Failed to read LDO overcurrent indicator\n");
901 goto ldo_lim_error;
902 }
903
904 for (i = regulators->n_regulators - 1; i >= 0; i--) {
905 regl = ®ulators->regulator[i];
906 if (regl->info->oc_event.reg != DA9062AA_STATUS_D)
907 continue;
908
909 if (BIT(regl->info->oc_event.lsb) & bits) {
910 regulator_notifier_call_chain(regl->rdev,
911 REGULATOR_EVENT_OVER_CURRENT, NULL);
912 handled = IRQ_HANDLED;
913 }
914 }
915
916ldo_lim_error:
917 return handled;
918}
919
920static int da9062_regulator_probe(struct platform_device *pdev)
921{
922 struct da9062 *chip = dev_get_drvdata(pdev->dev.parent);
923 struct da9062_regulators *regulators;
924 struct da9062_regulator *regl;
925 struct regulator_config config = { };
926 const struct da9062_regulator_info *rinfo;
927 int n, ret;
928 int max_regulators;
929
930 switch (chip->chip_type) {
931 case COMPAT_TYPE_DA9061:
932 max_regulators = DA9061_MAX_REGULATORS;
933 rinfo = local_da9061_regulator_info;
934 break;
935 case COMPAT_TYPE_DA9062:
936 max_regulators = DA9062_MAX_REGULATORS;
937 rinfo = local_da9062_regulator_info;
938 break;
939 default:
940 dev_err(chip->dev, "Unrecognised chip type\n");
941 return -ENODEV;
942 }
943
944 /* Allocate memory required by usable regulators */
945 regulators = devm_kzalloc(&pdev->dev, struct_size(regulators, regulator,
946 max_regulators), GFP_KERNEL);
947 if (!regulators)
948 return -ENOMEM;
949
950 regulators->n_regulators = max_regulators;
951 platform_set_drvdata(pdev, regulators);
952
953 for (n = 0; n < regulators->n_regulators; n++) {
954 /* Initialise regulator structure */
955 regl = ®ulators->regulator[n];
956 regl->hw = chip;
957 regl->info = &rinfo[n];
958 regl->desc = regl->info->desc;
959 regl->desc.type = REGULATOR_VOLTAGE;
960 regl->desc.owner = THIS_MODULE;
961
962 if (regl->info->mode.reg) {
963 regl->mode = devm_regmap_field_alloc(
964 &pdev->dev,
965 chip->regmap,
966 regl->info->mode);
967 if (IS_ERR(regl->mode))
968 return PTR_ERR(regl->mode);
969 }
970
971 if (regl->info->suspend.reg) {
972 regl->suspend = devm_regmap_field_alloc(
973 &pdev->dev,
974 chip->regmap,
975 regl->info->suspend);
976 if (IS_ERR(regl->suspend))
977 return PTR_ERR(regl->suspend);
978 }
979
980 if (regl->info->sleep.reg) {
981 regl->sleep = devm_regmap_field_alloc(
982 &pdev->dev,
983 chip->regmap,
984 regl->info->sleep);
985 if (IS_ERR(regl->sleep))
986 return PTR_ERR(regl->sleep);
987 }
988
989 if (regl->info->suspend_sleep.reg) {
990 regl->suspend_sleep = devm_regmap_field_alloc(
991 &pdev->dev,
992 chip->regmap,
993 regl->info->suspend_sleep);
994 if (IS_ERR(regl->suspend_sleep))
995 return PTR_ERR(regl->suspend_sleep);
996 }
997
998 /* Register regulator */
999 memset(&config, 0, sizeof(config));
1000 config.dev = chip->dev;
1001 config.driver_data = regl;
1002 config.regmap = chip->regmap;
1003
1004 regl->rdev = devm_regulator_register(&pdev->dev, ®l->desc,
1005 &config);
1006 if (IS_ERR(regl->rdev)) {
1007 dev_err(&pdev->dev,
1008 "Failed to register %s regulator\n",
1009 regl->desc.name);
1010 return PTR_ERR(regl->rdev);
1011 }
1012 }
1013
1014 /* LDOs overcurrent event support */
1015 regulators->irq_ldo_lim = platform_get_irq_byname_optional(pdev, "LDO_LIM");
1016 if (regulators->irq_ldo_lim < 0)
1017 return 0;
1018
1019 ret = devm_request_threaded_irq(&pdev->dev, regulators->irq_ldo_lim,
1020 NULL, da9062_ldo_lim_event,
1021 IRQF_TRIGGER_LOW | IRQF_ONESHOT,
1022 "LDO_LIM", regulators);
1023 if (ret) {
1024 dev_warn(&pdev->dev,
1025 "Failed to request LDO_LIM IRQ.\n");
1026 regulators->irq_ldo_lim = -ENXIO;
1027 }
1028
1029 return 0;
1030}
1031
1032static struct platform_driver da9062_regulator_driver = {
1033 .driver = {
1034 .name = "da9062-regulators",
1035 .probe_type = PROBE_PREFER_ASYNCHRONOUS,
1036 },
1037 .probe = da9062_regulator_probe,
1038};
1039
1040static int __init da9062_regulator_init(void)
1041{
1042 return platform_driver_register(&da9062_regulator_driver);
1043}
1044subsys_initcall(da9062_regulator_init);
1045
1046static void __exit da9062_regulator_cleanup(void)
1047{
1048 platform_driver_unregister(&da9062_regulator_driver);
1049}
1050module_exit(da9062_regulator_cleanup);
1051
1052/* Module information */
1053MODULE_AUTHOR("S Twiss <stwiss.opensource@diasemi.com>");
1054MODULE_DESCRIPTION("REGULATOR device driver for Dialog DA9062 and DA9061");
1055MODULE_LICENSE("GPL");
1056MODULE_ALIAS("platform:da9062-regulators");
1/*
2 * da9062-regulator.c - REGULATOR device driver for DA9062
3 * Copyright (C) 2015 Dialog Semiconductor Ltd.
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 */
15#include <linux/kernel.h>
16#include <linux/module.h>
17#include <linux/init.h>
18#include <linux/err.h>
19#include <linux/slab.h>
20#include <linux/of.h>
21#include <linux/platform_device.h>
22#include <linux/regmap.h>
23#include <linux/regulator/driver.h>
24#include <linux/regulator/machine.h>
25#include <linux/regulator/of_regulator.h>
26#include <linux/mfd/da9062/core.h>
27#include <linux/mfd/da9062/registers.h>
28
29/* Regulator IDs */
30enum {
31 DA9062_ID_BUCK1,
32 DA9062_ID_BUCK2,
33 DA9062_ID_BUCK3,
34 DA9062_ID_BUCK4,
35 DA9062_ID_LDO1,
36 DA9062_ID_LDO2,
37 DA9062_ID_LDO3,
38 DA9062_ID_LDO4,
39 DA9062_MAX_REGULATORS,
40};
41
42/* Regulator capabilities and registers description */
43struct da9062_regulator_info {
44 struct regulator_desc desc;
45 /* Current limiting */
46 unsigned int n_current_limits;
47 const int *current_limits;
48 /* Main register fields */
49 struct reg_field mode;
50 struct reg_field suspend;
51 struct reg_field sleep;
52 struct reg_field suspend_sleep;
53 unsigned int suspend_vsel_reg;
54 struct reg_field ilimit;
55 /* Event detection bit */
56 struct reg_field oc_event;
57};
58
59/* Single regulator settings */
60struct da9062_regulator {
61 struct regulator_desc desc;
62 struct regulator_dev *rdev;
63 struct da9062 *hw;
64 const struct da9062_regulator_info *info;
65
66 struct regmap_field *mode;
67 struct regmap_field *suspend;
68 struct regmap_field *sleep;
69 struct regmap_field *suspend_sleep;
70 struct regmap_field *ilimit;
71};
72
73/* Encapsulates all information for the regulators driver */
74struct da9062_regulators {
75 int irq_ldo_lim;
76 unsigned n_regulators;
77 /* Array size to be defined during init. Keep at end. */
78 struct da9062_regulator regulator[0];
79};
80
81/* BUCK modes */
82enum {
83 BUCK_MODE_MANUAL, /* 0 */
84 BUCK_MODE_SLEEP, /* 1 */
85 BUCK_MODE_SYNC, /* 2 */
86 BUCK_MODE_AUTO /* 3 */
87};
88
89/* Regulator operations */
90
91/* Current limits array (in uA) BUCK1 and BUCK3.
92 Entry indexes corresponds to register values. */
93static const int da9062_buck_a_limits[] = {
94 500000, 600000, 700000, 800000, 900000, 1000000, 1100000, 1200000,
95 1300000, 1400000, 1500000, 1600000, 1700000, 1800000, 1900000, 2000000
96};
97
98/* Current limits array (in uA) for BUCK2.
99 Entry indexes corresponds to register values. */
100static const int da9062_buck_b_limits[] = {
101 1500000, 1600000, 1700000, 1800000, 1900000, 2000000, 2100000, 2200000,
102 2300000, 2400000, 2500000, 2600000, 2700000, 2800000, 2900000, 3000000
103};
104
105static int da9062_set_current_limit(struct regulator_dev *rdev,
106 int min_ua, int max_ua)
107{
108 struct da9062_regulator *regl = rdev_get_drvdata(rdev);
109 const struct da9062_regulator_info *rinfo = regl->info;
110 int n, tval;
111
112 for (n = 0; n < rinfo->n_current_limits; n++) {
113 tval = rinfo->current_limits[n];
114 if (tval >= min_ua && tval <= max_ua)
115 return regmap_field_write(regl->ilimit, n);
116 }
117
118 return -EINVAL;
119}
120
121static int da9062_get_current_limit(struct regulator_dev *rdev)
122{
123 struct da9062_regulator *regl = rdev_get_drvdata(rdev);
124 const struct da9062_regulator_info *rinfo = regl->info;
125 unsigned int sel;
126 int ret;
127
128 ret = regmap_field_read(regl->ilimit, &sel);
129 if (ret < 0)
130 return ret;
131
132 if (sel >= rinfo->n_current_limits)
133 sel = rinfo->n_current_limits - 1;
134
135 return rinfo->current_limits[sel];
136}
137
138static int da9062_buck_set_mode(struct regulator_dev *rdev, unsigned mode)
139{
140 struct da9062_regulator *regl = rdev_get_drvdata(rdev);
141 unsigned val;
142
143 switch (mode) {
144 case REGULATOR_MODE_FAST:
145 val = BUCK_MODE_SYNC;
146 break;
147 case REGULATOR_MODE_NORMAL:
148 val = BUCK_MODE_AUTO;
149 break;
150 case REGULATOR_MODE_STANDBY:
151 val = BUCK_MODE_SLEEP;
152 break;
153 default:
154 return -EINVAL;
155 }
156
157 return regmap_field_write(regl->mode, val);
158}
159
160/*
161 * Bucks use single mode register field for normal operation
162 * and suspend state.
163 * There are 3 modes to map to: FAST, NORMAL, and STANDBY.
164 */
165
166static unsigned da9062_buck_get_mode(struct regulator_dev *rdev)
167{
168 struct da9062_regulator *regl = rdev_get_drvdata(rdev);
169 struct regmap_field *field;
170 unsigned int val, mode = 0;
171 int ret;
172
173 ret = regmap_field_read(regl->mode, &val);
174 if (ret < 0)
175 return ret;
176
177 switch (val) {
178 default:
179 case BUCK_MODE_MANUAL:
180 mode = REGULATOR_MODE_FAST | REGULATOR_MODE_STANDBY;
181 /* Sleep flag bit decides the mode */
182 break;
183 case BUCK_MODE_SLEEP:
184 return REGULATOR_MODE_STANDBY;
185 case BUCK_MODE_SYNC:
186 return REGULATOR_MODE_FAST;
187 case BUCK_MODE_AUTO:
188 return REGULATOR_MODE_NORMAL;
189 }
190
191 /* Detect current regulator state */
192 ret = regmap_field_read(regl->suspend, &val);
193 if (ret < 0)
194 return 0;
195
196 /* Read regulator mode from proper register, depending on state */
197 if (val)
198 field = regl->suspend_sleep;
199 else
200 field = regl->sleep;
201
202 ret = regmap_field_read(field, &val);
203 if (ret < 0)
204 return 0;
205
206 if (val)
207 mode &= REGULATOR_MODE_STANDBY;
208 else
209 mode &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_FAST;
210
211 return mode;
212}
213
214/*
215 * LDOs use sleep flags - one for normal and one for suspend state.
216 * There are 2 modes to map to: NORMAL and STANDBY (sleep) for each state.
217 */
218
219static int da9062_ldo_set_mode(struct regulator_dev *rdev, unsigned mode)
220{
221 struct da9062_regulator *regl = rdev_get_drvdata(rdev);
222 unsigned val;
223
224 switch (mode) {
225 case REGULATOR_MODE_NORMAL:
226 val = 0;
227 break;
228 case REGULATOR_MODE_STANDBY:
229 val = 1;
230 break;
231 default:
232 return -EINVAL;
233 }
234
235 return regmap_field_write(regl->sleep, val);
236}
237
238static unsigned da9062_ldo_get_mode(struct regulator_dev *rdev)
239{
240 struct da9062_regulator *regl = rdev_get_drvdata(rdev);
241 struct regmap_field *field;
242 int ret, val;
243
244 /* Detect current regulator state */
245 ret = regmap_field_read(regl->suspend, &val);
246 if (ret < 0)
247 return 0;
248
249 /* Read regulator mode from proper register, depending on state */
250 if (val)
251 field = regl->suspend_sleep;
252 else
253 field = regl->sleep;
254
255 ret = regmap_field_read(field, &val);
256 if (ret < 0)
257 return 0;
258
259 if (val)
260 return REGULATOR_MODE_STANDBY;
261 else
262 return REGULATOR_MODE_NORMAL;
263}
264
265static int da9062_buck_get_status(struct regulator_dev *rdev)
266{
267 int ret = regulator_is_enabled_regmap(rdev);
268
269 if (ret == 0) {
270 ret = REGULATOR_STATUS_OFF;
271 } else if (ret > 0) {
272 ret = da9062_buck_get_mode(rdev);
273 if (ret > 0)
274 ret = regulator_mode_to_status(ret);
275 else if (ret == 0)
276 ret = -EIO;
277 }
278
279 return ret;
280}
281
282static int da9062_ldo_get_status(struct regulator_dev *rdev)
283{
284 int ret = regulator_is_enabled_regmap(rdev);
285
286 if (ret == 0) {
287 ret = REGULATOR_STATUS_OFF;
288 } else if (ret > 0) {
289 ret = da9062_ldo_get_mode(rdev);
290 if (ret > 0)
291 ret = regulator_mode_to_status(ret);
292 else if (ret == 0)
293 ret = -EIO;
294 }
295
296 return ret;
297}
298
299static int da9062_set_suspend_voltage(struct regulator_dev *rdev, int uv)
300{
301 struct da9062_regulator *regl = rdev_get_drvdata(rdev);
302 const struct da9062_regulator_info *rinfo = regl->info;
303 int ret, sel;
304
305 sel = regulator_map_voltage_linear(rdev, uv, uv);
306 if (sel < 0)
307 return sel;
308
309 sel <<= ffs(rdev->desc->vsel_mask) - 1;
310
311 ret = regmap_update_bits(regl->hw->regmap, rinfo->suspend_vsel_reg,
312 rdev->desc->vsel_mask, sel);
313
314 return ret;
315}
316
317static int da9062_suspend_enable(struct regulator_dev *rdev)
318{
319 struct da9062_regulator *regl = rdev_get_drvdata(rdev);
320
321 return regmap_field_write(regl->suspend, 1);
322}
323
324static int da9062_suspend_disable(struct regulator_dev *rdev)
325{
326 struct da9062_regulator *regl = rdev_get_drvdata(rdev);
327
328 return regmap_field_write(regl->suspend, 0);
329}
330
331static int da9062_buck_set_suspend_mode(struct regulator_dev *rdev,
332 unsigned mode)
333{
334 struct da9062_regulator *regl = rdev_get_drvdata(rdev);
335 int val;
336
337 switch (mode) {
338 case REGULATOR_MODE_FAST:
339 val = BUCK_MODE_SYNC;
340 break;
341 case REGULATOR_MODE_NORMAL:
342 val = BUCK_MODE_AUTO;
343 break;
344 case REGULATOR_MODE_STANDBY:
345 val = BUCK_MODE_SLEEP;
346 break;
347 default:
348 return -EINVAL;
349 }
350
351 return regmap_field_write(regl->mode, val);
352}
353
354static int da9062_ldo_set_suspend_mode(struct regulator_dev *rdev,
355 unsigned mode)
356{
357 struct da9062_regulator *regl = rdev_get_drvdata(rdev);
358 unsigned val;
359
360 switch (mode) {
361 case REGULATOR_MODE_NORMAL:
362 val = 0;
363 break;
364 case REGULATOR_MODE_STANDBY:
365 val = 1;
366 break;
367 default:
368 return -EINVAL;
369 }
370
371 return regmap_field_write(regl->suspend_sleep, val);
372}
373
374static const struct regulator_ops da9062_buck_ops = {
375 .enable = regulator_enable_regmap,
376 .disable = regulator_disable_regmap,
377 .is_enabled = regulator_is_enabled_regmap,
378 .get_voltage_sel = regulator_get_voltage_sel_regmap,
379 .set_voltage_sel = regulator_set_voltage_sel_regmap,
380 .list_voltage = regulator_list_voltage_linear,
381 .set_current_limit = da9062_set_current_limit,
382 .get_current_limit = da9062_get_current_limit,
383 .set_mode = da9062_buck_set_mode,
384 .get_mode = da9062_buck_get_mode,
385 .get_status = da9062_buck_get_status,
386 .set_suspend_voltage = da9062_set_suspend_voltage,
387 .set_suspend_enable = da9062_suspend_enable,
388 .set_suspend_disable = da9062_suspend_disable,
389 .set_suspend_mode = da9062_buck_set_suspend_mode,
390};
391
392static const struct regulator_ops da9062_ldo_ops = {
393 .enable = regulator_enable_regmap,
394 .disable = regulator_disable_regmap,
395 .is_enabled = regulator_is_enabled_regmap,
396 .get_voltage_sel = regulator_get_voltage_sel_regmap,
397 .set_voltage_sel = regulator_set_voltage_sel_regmap,
398 .list_voltage = regulator_list_voltage_linear,
399 .set_mode = da9062_ldo_set_mode,
400 .get_mode = da9062_ldo_get_mode,
401 .get_status = da9062_ldo_get_status,
402 .set_suspend_voltage = da9062_set_suspend_voltage,
403 .set_suspend_enable = da9062_suspend_enable,
404 .set_suspend_disable = da9062_suspend_disable,
405 .set_suspend_mode = da9062_ldo_set_suspend_mode,
406};
407
408/* Regulator information */
409static const struct da9062_regulator_info local_regulator_info[] = {
410 {
411 .desc.id = DA9062_ID_BUCK1,
412 .desc.name = "DA9062 BUCK1",
413 .desc.of_match = of_match_ptr("buck1"),
414 .desc.regulators_node = of_match_ptr("regulators"),
415 .desc.ops = &da9062_buck_ops,
416 .desc.min_uV = (300) * 1000,
417 .desc.uV_step = (10) * 1000,
418 .desc.n_voltages = ((1570) - (300))/(10) + 1,
419 .current_limits = da9062_buck_a_limits,
420 .n_current_limits = ARRAY_SIZE(da9062_buck_a_limits),
421 .desc.enable_reg = DA9062AA_BUCK1_CONT,
422 .desc.enable_mask = DA9062AA_BUCK1_EN_MASK,
423 .desc.vsel_reg = DA9062AA_VBUCK1_A,
424 .desc.vsel_mask = DA9062AA_VBUCK1_A_MASK,
425 .desc.linear_min_sel = 0,
426 .sleep = REG_FIELD(DA9062AA_VBUCK1_A,
427 __builtin_ffs((int)DA9062AA_BUCK1_SL_A_MASK) - 1,
428 sizeof(unsigned int) * 8 -
429 __builtin_clz((DA9062AA_BUCK1_SL_A_MASK)) - 1),
430 .suspend_sleep = REG_FIELD(DA9062AA_VBUCK1_B,
431 __builtin_ffs((int)DA9062AA_BUCK1_SL_B_MASK) - 1,
432 sizeof(unsigned int) * 8 -
433 __builtin_clz((DA9062AA_BUCK1_SL_B_MASK)) - 1),
434 .suspend_vsel_reg = DA9062AA_VBUCK1_B,
435 .mode = REG_FIELD(DA9062AA_BUCK1_CFG,
436 __builtin_ffs((int)DA9062AA_BUCK1_MODE_MASK) - 1,
437 sizeof(unsigned int) * 8 -
438 __builtin_clz((DA9062AA_BUCK1_MODE_MASK)) - 1),
439 .suspend = REG_FIELD(DA9062AA_DVC_1,
440 __builtin_ffs((int)DA9062AA_VBUCK1_SEL_MASK) - 1,
441 sizeof(unsigned int) * 8 -
442 __builtin_clz((DA9062AA_VBUCK1_SEL_MASK)) - 1),
443 .ilimit = REG_FIELD(DA9062AA_BUCK_ILIM_C,
444 __builtin_ffs((int)DA9062AA_BUCK1_ILIM_MASK) - 1,
445 sizeof(unsigned int) * 8 -
446 __builtin_clz((DA9062AA_BUCK1_ILIM_MASK)) - 1),
447 },
448 {
449 .desc.id = DA9062_ID_BUCK2,
450 .desc.name = "DA9062 BUCK2",
451 .desc.of_match = of_match_ptr("buck2"),
452 .desc.regulators_node = of_match_ptr("regulators"),
453 .desc.ops = &da9062_buck_ops,
454 .desc.min_uV = (300) * 1000,
455 .desc.uV_step = (10) * 1000,
456 .desc.n_voltages = ((1570) - (300))/(10) + 1,
457 .current_limits = da9062_buck_a_limits,
458 .n_current_limits = ARRAY_SIZE(da9062_buck_a_limits),
459 .desc.enable_reg = DA9062AA_BUCK2_CONT,
460 .desc.enable_mask = DA9062AA_BUCK2_EN_MASK,
461 .desc.vsel_reg = DA9062AA_VBUCK2_A,
462 .desc.vsel_mask = DA9062AA_VBUCK2_A_MASK,
463 .desc.linear_min_sel = 0,
464 .sleep = REG_FIELD(DA9062AA_VBUCK2_A,
465 __builtin_ffs((int)DA9062AA_BUCK2_SL_A_MASK) - 1,
466 sizeof(unsigned int) * 8 -
467 __builtin_clz((DA9062AA_BUCK2_SL_A_MASK)) - 1),
468 .suspend_sleep = REG_FIELD(DA9062AA_VBUCK2_B,
469 __builtin_ffs((int)DA9062AA_BUCK2_SL_B_MASK) - 1,
470 sizeof(unsigned int) * 8 -
471 __builtin_clz((DA9062AA_BUCK2_SL_B_MASK)) - 1),
472 .suspend_vsel_reg = DA9062AA_VBUCK2_B,
473 .mode = REG_FIELD(DA9062AA_BUCK2_CFG,
474 __builtin_ffs((int)DA9062AA_BUCK2_MODE_MASK) - 1,
475 sizeof(unsigned int) * 8 -
476 __builtin_clz((DA9062AA_BUCK2_MODE_MASK)) - 1),
477 .suspend = REG_FIELD(DA9062AA_DVC_1,
478 __builtin_ffs((int)DA9062AA_VBUCK2_SEL_MASK) - 1,
479 sizeof(unsigned int) * 8 -
480 __builtin_clz((DA9062AA_VBUCK2_SEL_MASK)) - 1),
481 .ilimit = REG_FIELD(DA9062AA_BUCK_ILIM_C,
482 __builtin_ffs((int)DA9062AA_BUCK2_ILIM_MASK) - 1,
483 sizeof(unsigned int) * 8 -
484 __builtin_clz((DA9062AA_BUCK2_ILIM_MASK)) - 1),
485 },
486 {
487 .desc.id = DA9062_ID_BUCK3,
488 .desc.name = "DA9062 BUCK3",
489 .desc.of_match = of_match_ptr("buck3"),
490 .desc.regulators_node = of_match_ptr("regulators"),
491 .desc.ops = &da9062_buck_ops,
492 .desc.min_uV = (800) * 1000,
493 .desc.uV_step = (20) * 1000,
494 .desc.n_voltages = ((3340) - (800))/(20) + 1,
495 .current_limits = da9062_buck_b_limits,
496 .n_current_limits = ARRAY_SIZE(da9062_buck_b_limits),
497 .desc.enable_reg = DA9062AA_BUCK3_CONT,
498 .desc.enable_mask = DA9062AA_BUCK3_EN_MASK,
499 .desc.vsel_reg = DA9062AA_VBUCK3_A,
500 .desc.vsel_mask = DA9062AA_VBUCK3_A_MASK,
501 .desc.linear_min_sel = 0,
502 .sleep = REG_FIELD(DA9062AA_VBUCK3_A,
503 __builtin_ffs((int)DA9062AA_BUCK3_SL_A_MASK) - 1,
504 sizeof(unsigned int) * 8 -
505 __builtin_clz((DA9062AA_BUCK3_SL_A_MASK)) - 1),
506 .suspend_sleep = REG_FIELD(DA9062AA_VBUCK3_B,
507 __builtin_ffs((int)DA9062AA_BUCK3_SL_B_MASK) - 1,
508 sizeof(unsigned int) * 8 -
509 __builtin_clz((DA9062AA_BUCK3_SL_B_MASK)) - 1),
510 .suspend_vsel_reg = DA9062AA_VBUCK3_B,
511 .mode = REG_FIELD(DA9062AA_BUCK3_CFG,
512 __builtin_ffs((int)DA9062AA_BUCK3_MODE_MASK) - 1,
513 sizeof(unsigned int) * 8 -
514 __builtin_clz((DA9062AA_BUCK3_MODE_MASK)) - 1),
515 .suspend = REG_FIELD(DA9062AA_DVC_1,
516 __builtin_ffs((int)DA9062AA_VBUCK3_SEL_MASK) - 1,
517 sizeof(unsigned int) * 8 -
518 __builtin_clz((DA9062AA_VBUCK3_SEL_MASK)) - 1),
519 .ilimit = REG_FIELD(DA9062AA_BUCK_ILIM_A,
520 __builtin_ffs((int)DA9062AA_BUCK3_ILIM_MASK) - 1,
521 sizeof(unsigned int) * 8 -
522 __builtin_clz((DA9062AA_BUCK3_ILIM_MASK)) - 1),
523 },
524 {
525 .desc.id = DA9062_ID_BUCK4,
526 .desc.name = "DA9062 BUCK4",
527 .desc.of_match = of_match_ptr("buck4"),
528 .desc.regulators_node = of_match_ptr("regulators"),
529 .desc.ops = &da9062_buck_ops,
530 .desc.min_uV = (530) * 1000,
531 .desc.uV_step = (10) * 1000,
532 .desc.n_voltages = ((1800) - (530))/(10) + 1,
533 .current_limits = da9062_buck_a_limits,
534 .n_current_limits = ARRAY_SIZE(da9062_buck_a_limits),
535 .desc.enable_reg = DA9062AA_BUCK4_CONT,
536 .desc.enable_mask = DA9062AA_BUCK4_EN_MASK,
537 .desc.vsel_reg = DA9062AA_VBUCK4_A,
538 .desc.vsel_mask = DA9062AA_VBUCK4_A_MASK,
539 .desc.linear_min_sel = 0,
540 .sleep = REG_FIELD(DA9062AA_VBUCK4_A,
541 __builtin_ffs((int)DA9062AA_BUCK4_SL_A_MASK) - 1,
542 sizeof(unsigned int) * 8 -
543 __builtin_clz((DA9062AA_BUCK4_SL_A_MASK)) - 1),
544 .suspend_sleep = REG_FIELD(DA9062AA_VBUCK4_B,
545 __builtin_ffs((int)DA9062AA_BUCK4_SL_B_MASK) - 1,
546 sizeof(unsigned int) * 8 -
547 __builtin_clz((DA9062AA_BUCK4_SL_B_MASK)) - 1),
548 .suspend_vsel_reg = DA9062AA_VBUCK4_B,
549 .mode = REG_FIELD(DA9062AA_BUCK4_CFG,
550 __builtin_ffs((int)DA9062AA_BUCK4_MODE_MASK) - 1,
551 sizeof(unsigned int) * 8 -
552 __builtin_clz((DA9062AA_BUCK4_MODE_MASK)) - 1),
553 .suspend = REG_FIELD(DA9062AA_DVC_1,
554 __builtin_ffs((int)DA9062AA_VBUCK4_SEL_MASK) - 1,
555 sizeof(unsigned int) * 8 -
556 __builtin_clz((DA9062AA_VBUCK4_SEL_MASK)) - 1),
557 .ilimit = REG_FIELD(DA9062AA_BUCK_ILIM_B,
558 __builtin_ffs((int)DA9062AA_BUCK4_ILIM_MASK) - 1,
559 sizeof(unsigned int) * 8 -
560 __builtin_clz((DA9062AA_BUCK4_ILIM_MASK)) - 1),
561 },
562 {
563 .desc.id = DA9062_ID_LDO1,
564 .desc.name = "DA9062 LDO1",
565 .desc.of_match = of_match_ptr("ldo1"),
566 .desc.regulators_node = of_match_ptr("regulators"),
567 .desc.ops = &da9062_ldo_ops,
568 .desc.min_uV = (900) * 1000,
569 .desc.uV_step = (50) * 1000,
570 .desc.n_voltages = ((3600) - (900))/(50) + 1,
571 .desc.enable_reg = DA9062AA_LDO1_CONT,
572 .desc.enable_mask = DA9062AA_LDO1_EN_MASK,
573 .desc.vsel_reg = DA9062AA_VLDO1_A,
574 .desc.vsel_mask = DA9062AA_VLDO1_A_MASK,
575 .desc.linear_min_sel = 0,
576 .sleep = REG_FIELD(DA9062AA_VLDO1_A,
577 __builtin_ffs((int)DA9062AA_LDO1_SL_A_MASK) - 1,
578 sizeof(unsigned int) * 8 -
579 __builtin_clz((DA9062AA_LDO1_SL_A_MASK)) - 1),
580 .suspend_sleep = REG_FIELD(DA9062AA_VLDO1_B,
581 __builtin_ffs((int)DA9062AA_LDO1_SL_B_MASK) - 1,
582 sizeof(unsigned int) * 8 -
583 __builtin_clz((DA9062AA_LDO1_SL_B_MASK)) - 1),
584 .suspend_vsel_reg = DA9062AA_VLDO1_B,
585 .suspend = REG_FIELD(DA9062AA_DVC_1,
586 __builtin_ffs((int)DA9062AA_VLDO1_SEL_MASK) - 1,
587 sizeof(unsigned int) * 8 -
588 __builtin_clz((DA9062AA_VLDO1_SEL_MASK)) - 1),
589 .oc_event = REG_FIELD(DA9062AA_STATUS_D,
590 __builtin_ffs((int)DA9062AA_LDO1_ILIM_MASK) - 1,
591 sizeof(unsigned int) * 8 -
592 __builtin_clz((DA9062AA_LDO1_ILIM_MASK)) - 1),
593 },
594 {
595 .desc.id = DA9062_ID_LDO2,
596 .desc.name = "DA9062 LDO2",
597 .desc.of_match = of_match_ptr("ldo2"),
598 .desc.regulators_node = of_match_ptr("regulators"),
599 .desc.ops = &da9062_ldo_ops,
600 .desc.min_uV = (900) * 1000,
601 .desc.uV_step = (50) * 1000,
602 .desc.n_voltages = ((3600) - (600))/(50) + 1,
603 .desc.enable_reg = DA9062AA_LDO2_CONT,
604 .desc.enable_mask = DA9062AA_LDO2_EN_MASK,
605 .desc.vsel_reg = DA9062AA_VLDO2_A,
606 .desc.vsel_mask = DA9062AA_VLDO2_A_MASK,
607 .desc.linear_min_sel = 0,
608 .sleep = REG_FIELD(DA9062AA_VLDO2_A,
609 __builtin_ffs((int)DA9062AA_LDO2_SL_A_MASK) - 1,
610 sizeof(unsigned int) * 8 -
611 __builtin_clz((DA9062AA_LDO2_SL_A_MASK)) - 1),
612 .suspend_sleep = REG_FIELD(DA9062AA_VLDO2_B,
613 __builtin_ffs((int)DA9062AA_LDO2_SL_B_MASK) - 1,
614 sizeof(unsigned int) * 8 -
615 __builtin_clz((DA9062AA_LDO2_SL_B_MASK)) - 1),
616 .suspend_vsel_reg = DA9062AA_VLDO2_B,
617 .suspend = REG_FIELD(DA9062AA_DVC_1,
618 __builtin_ffs((int)DA9062AA_VLDO2_SEL_MASK) - 1,
619 sizeof(unsigned int) * 8 -
620 __builtin_clz((DA9062AA_VLDO2_SEL_MASK)) - 1),
621 .oc_event = REG_FIELD(DA9062AA_STATUS_D,
622 __builtin_ffs((int)DA9062AA_LDO2_ILIM_MASK) - 1,
623 sizeof(unsigned int) * 8 -
624 __builtin_clz((DA9062AA_LDO2_ILIM_MASK)) - 1),
625 },
626 {
627 .desc.id = DA9062_ID_LDO3,
628 .desc.name = "DA9062 LDO3",
629 .desc.of_match = of_match_ptr("ldo3"),
630 .desc.regulators_node = of_match_ptr("regulators"),
631 .desc.ops = &da9062_ldo_ops,
632 .desc.min_uV = (900) * 1000,
633 .desc.uV_step = (50) * 1000,
634 .desc.n_voltages = ((3600) - (900))/(50) + 1,
635 .desc.enable_reg = DA9062AA_LDO3_CONT,
636 .desc.enable_mask = DA9062AA_LDO3_EN_MASK,
637 .desc.vsel_reg = DA9062AA_VLDO3_A,
638 .desc.vsel_mask = DA9062AA_VLDO3_A_MASK,
639 .desc.linear_min_sel = 0,
640 .sleep = REG_FIELD(DA9062AA_VLDO3_A,
641 __builtin_ffs((int)DA9062AA_LDO3_SL_A_MASK) - 1,
642 sizeof(unsigned int) * 8 -
643 __builtin_clz((DA9062AA_LDO3_SL_A_MASK)) - 1),
644 .suspend_sleep = REG_FIELD(DA9062AA_VLDO3_B,
645 __builtin_ffs((int)DA9062AA_LDO3_SL_B_MASK) - 1,
646 sizeof(unsigned int) * 8 -
647 __builtin_clz((DA9062AA_LDO3_SL_B_MASK)) - 1),
648 .suspend_vsel_reg = DA9062AA_VLDO3_B,
649 .suspend = REG_FIELD(DA9062AA_DVC_1,
650 __builtin_ffs((int)DA9062AA_VLDO3_SEL_MASK) - 1,
651 sizeof(unsigned int) * 8 -
652 __builtin_clz((DA9062AA_VLDO3_SEL_MASK)) - 1),
653 .oc_event = REG_FIELD(DA9062AA_STATUS_D,
654 __builtin_ffs((int)DA9062AA_LDO3_ILIM_MASK) - 1,
655 sizeof(unsigned int) * 8 -
656 __builtin_clz((DA9062AA_LDO3_ILIM_MASK)) - 1),
657 },
658 {
659 .desc.id = DA9062_ID_LDO4,
660 .desc.name = "DA9062 LDO4",
661 .desc.of_match = of_match_ptr("ldo4"),
662 .desc.regulators_node = of_match_ptr("regulators"),
663 .desc.ops = &da9062_ldo_ops,
664 .desc.min_uV = (900) * 1000,
665 .desc.uV_step = (50) * 1000,
666 .desc.n_voltages = ((3600) - (900))/(50) + 1,
667 .desc.enable_reg = DA9062AA_LDO4_CONT,
668 .desc.enable_mask = DA9062AA_LDO4_EN_MASK,
669 .desc.vsel_reg = DA9062AA_VLDO4_A,
670 .desc.vsel_mask = DA9062AA_VLDO4_A_MASK,
671 .desc.linear_min_sel = 0,
672 .sleep = REG_FIELD(DA9062AA_VLDO4_A,
673 __builtin_ffs((int)DA9062AA_LDO4_SL_A_MASK) - 1,
674 sizeof(unsigned int) * 8 -
675 __builtin_clz((DA9062AA_LDO4_SL_A_MASK)) - 1),
676 .suspend_sleep = REG_FIELD(DA9062AA_VLDO4_B,
677 __builtin_ffs((int)DA9062AA_LDO4_SL_B_MASK) - 1,
678 sizeof(unsigned int) * 8 -
679 __builtin_clz((DA9062AA_LDO4_SL_B_MASK)) - 1),
680 .suspend_vsel_reg = DA9062AA_VLDO4_B,
681 .suspend = REG_FIELD(DA9062AA_DVC_1,
682 __builtin_ffs((int)DA9062AA_VLDO4_SEL_MASK) - 1,
683 sizeof(unsigned int) * 8 -
684 __builtin_clz((DA9062AA_VLDO4_SEL_MASK)) - 1),
685 .oc_event = REG_FIELD(DA9062AA_STATUS_D,
686 __builtin_ffs((int)DA9062AA_LDO4_ILIM_MASK) - 1,
687 sizeof(unsigned int) * 8 -
688 __builtin_clz((DA9062AA_LDO4_ILIM_MASK)) - 1),
689 },
690};
691
692/* Regulator interrupt handlers */
693static irqreturn_t da9062_ldo_lim_event(int irq, void *data)
694{
695 struct da9062_regulators *regulators = data;
696 struct da9062 *hw = regulators->regulator[0].hw;
697 struct da9062_regulator *regl;
698 int handled = IRQ_NONE;
699 int bits, i, ret;
700
701 ret = regmap_read(hw->regmap, DA9062AA_STATUS_D, &bits);
702 if (ret < 0) {
703 dev_err(hw->dev,
704 "Failed to read LDO overcurrent indicator\n");
705 goto ldo_lim_error;
706 }
707
708 for (i = regulators->n_regulators - 1; i >= 0; i--) {
709 regl = ®ulators->regulator[i];
710 if (regl->info->oc_event.reg != DA9062AA_STATUS_D)
711 continue;
712
713 if (BIT(regl->info->oc_event.lsb) & bits) {
714 regulator_notifier_call_chain(regl->rdev,
715 REGULATOR_EVENT_OVER_CURRENT, NULL);
716 handled = IRQ_HANDLED;
717 }
718 }
719
720ldo_lim_error:
721 return handled;
722}
723
724static int da9062_regulator_probe(struct platform_device *pdev)
725{
726 struct da9062 *chip = dev_get_drvdata(pdev->dev.parent);
727 struct da9062_regulators *regulators;
728 struct da9062_regulator *regl;
729 struct regulator_config config = { };
730 int irq, n, ret;
731 size_t size;
732
733 /* Allocate memory required by usable regulators */
734 size = sizeof(struct da9062_regulators) +
735 DA9062_MAX_REGULATORS * sizeof(struct da9062_regulator);
736 regulators = devm_kzalloc(&pdev->dev, size, GFP_KERNEL);
737 if (!regulators)
738 return -ENOMEM;
739
740 regulators->n_regulators = DA9062_MAX_REGULATORS;
741 platform_set_drvdata(pdev, regulators);
742
743 n = 0;
744 while (n < regulators->n_regulators) {
745 /* Initialise regulator structure */
746 regl = ®ulators->regulator[n];
747 regl->hw = chip;
748 regl->info = &local_regulator_info[n];
749 regl->desc = regl->info->desc;
750 regl->desc.type = REGULATOR_VOLTAGE;
751 regl->desc.owner = THIS_MODULE;
752
753 if (regl->info->mode.reg)
754 regl->mode = devm_regmap_field_alloc(
755 &pdev->dev,
756 chip->regmap,
757 regl->info->mode);
758 if (regl->info->suspend.reg)
759 regl->suspend = devm_regmap_field_alloc(
760 &pdev->dev,
761 chip->regmap,
762 regl->info->suspend);
763 if (regl->info->sleep.reg)
764 regl->sleep = devm_regmap_field_alloc(
765 &pdev->dev,
766 chip->regmap,
767 regl->info->sleep);
768 if (regl->info->suspend_sleep.reg)
769 regl->suspend_sleep = devm_regmap_field_alloc(
770 &pdev->dev,
771 chip->regmap,
772 regl->info->suspend_sleep);
773 if (regl->info->ilimit.reg)
774 regl->ilimit = devm_regmap_field_alloc(
775 &pdev->dev,
776 chip->regmap,
777 regl->info->ilimit);
778
779 /* Register regulator */
780 memset(&config, 0, sizeof(config));
781 config.dev = chip->dev;
782 config.driver_data = regl;
783 config.regmap = chip->regmap;
784
785 regl->rdev = devm_regulator_register(&pdev->dev, ®l->desc,
786 &config);
787 if (IS_ERR(regl->rdev)) {
788 dev_err(&pdev->dev,
789 "Failed to register %s regulator\n",
790 regl->desc.name);
791 return PTR_ERR(regl->rdev);
792 }
793
794 n++;
795 }
796
797 /* LDOs overcurrent event support */
798 irq = platform_get_irq_byname(pdev, "LDO_LIM");
799 if (irq < 0) {
800 dev_err(&pdev->dev, "Failed to get IRQ.\n");
801 return irq;
802 }
803 regulators->irq_ldo_lim = irq;
804
805 ret = devm_request_threaded_irq(&pdev->dev, irq,
806 NULL, da9062_ldo_lim_event,
807 IRQF_TRIGGER_LOW | IRQF_ONESHOT,
808 "LDO_LIM", regulators);
809 if (ret) {
810 dev_warn(&pdev->dev,
811 "Failed to request LDO_LIM IRQ.\n");
812 regulators->irq_ldo_lim = -ENXIO;
813 }
814
815 return 0;
816}
817
818static struct platform_driver da9062_regulator_driver = {
819 .driver = {
820 .name = "da9062-regulators",
821 },
822 .probe = da9062_regulator_probe,
823};
824
825static int __init da9062_regulator_init(void)
826{
827 return platform_driver_register(&da9062_regulator_driver);
828}
829subsys_initcall(da9062_regulator_init);
830
831static void __exit da9062_regulator_cleanup(void)
832{
833 platform_driver_unregister(&da9062_regulator_driver);
834}
835module_exit(da9062_regulator_cleanup);
836
837/* Module information */
838MODULE_AUTHOR("S Twiss <stwiss.opensource@diasemi.com>");
839MODULE_DESCRIPTION("REGULATOR device driver for Dialog DA9062");
840MODULE_LICENSE("GPL");
841MODULE_ALIAS("platform:da9062-regulators");