1/*
2 * act8865-regulator.c - Voltage regulation for active-semi ACT88xx PMUs
3 *
4 * http://www.active-semi.com/products/power-management-units/act88xx/
5 *
6 * Copyright (C) 2013 Atmel Corporation
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 */
18
19#include <linux/module.h>
20#include <linux/init.h>
21#include <linux/i2c.h>
22#include <linux/err.h>
23#include <linux/platform_device.h>
24#include <linux/regulator/driver.h>
25#include <linux/regulator/act8865.h>
26#include <linux/of.h>
27#include <linux/of_device.h>
28#include <linux/regulator/of_regulator.h>
29#include <linux/regmap.h>
30
31/*
32 * ACT8600 Global Register Map.
33 */
34#define ACT8600_SYS_MODE 0x00
35#define ACT8600_SYS_CTRL 0x01
36#define ACT8600_DCDC1_VSET 0x10
37#define ACT8600_DCDC1_CTRL 0x12
38#define ACT8600_DCDC2_VSET 0x20
39#define ACT8600_DCDC2_CTRL 0x22
40#define ACT8600_DCDC3_VSET 0x30
41#define ACT8600_DCDC3_CTRL 0x32
42#define ACT8600_SUDCDC4_VSET 0x40
43#define ACT8600_SUDCDC4_CTRL 0x41
44#define ACT8600_LDO5_VSET 0x50
45#define ACT8600_LDO5_CTRL 0x51
46#define ACT8600_LDO6_VSET 0x60
47#define ACT8600_LDO6_CTRL 0x61
48#define ACT8600_LDO7_VSET 0x70
49#define ACT8600_LDO7_CTRL 0x71
50#define ACT8600_LDO8_VSET 0x80
51#define ACT8600_LDO8_CTRL 0x81
52#define ACT8600_LDO910_CTRL 0x91
53#define ACT8600_APCH0 0xA1
54#define ACT8600_APCH1 0xA8
55#define ACT8600_APCH2 0xA9
56#define ACT8600_APCH_STAT 0xAA
57#define ACT8600_OTG0 0xB0
58#define ACT8600_OTG1 0xB2
59
60/*
61 * ACT8846 Global Register Map.
62 */
63#define ACT8846_SYS0 0x00
64#define ACT8846_SYS1 0x01
65#define ACT8846_REG1_VSET 0x10
66#define ACT8846_REG1_CTRL 0x12
67#define ACT8846_REG2_VSET0 0x20
68#define ACT8846_REG2_VSET1 0x21
69#define ACT8846_REG2_CTRL 0x22
70#define ACT8846_REG3_VSET0 0x30
71#define ACT8846_REG3_VSET1 0x31
72#define ACT8846_REG3_CTRL 0x32
73#define ACT8846_REG4_VSET0 0x40
74#define ACT8846_REG4_VSET1 0x41
75#define ACT8846_REG4_CTRL 0x42
76#define ACT8846_REG5_VSET 0x50
77#define ACT8846_REG5_CTRL 0x51
78#define ACT8846_REG6_VSET 0x58
79#define ACT8846_REG6_CTRL 0x59
80#define ACT8846_REG7_VSET 0x60
81#define ACT8846_REG7_CTRL 0x61
82#define ACT8846_REG8_VSET 0x68
83#define ACT8846_REG8_CTRL 0x69
84#define ACT8846_REG9_VSET 0x70
85#define ACT8846_REG9_CTRL 0x71
86#define ACT8846_REG10_VSET 0x80
87#define ACT8846_REG10_CTRL 0x81
88#define ACT8846_REG11_VSET 0x90
89#define ACT8846_REG11_CTRL 0x91
90#define ACT8846_REG12_VSET 0xa0
91#define ACT8846_REG12_CTRL 0xa1
92#define ACT8846_REG13_CTRL 0xb1
93#define ACT8846_GLB_OFF_CTRL 0xc3
94#define ACT8846_OFF_SYSMASK 0x18
95
96/*
97 * ACT8865 Global Register Map.
98 */
99#define ACT8865_SYS_MODE 0x00
100#define ACT8865_SYS_CTRL 0x01
101#define ACT8865_DCDC1_VSET1 0x20
102#define ACT8865_DCDC1_VSET2 0x21
103#define ACT8865_DCDC1_CTRL 0x22
104#define ACT8865_DCDC2_VSET1 0x30
105#define ACT8865_DCDC2_VSET2 0x31
106#define ACT8865_DCDC2_CTRL 0x32
107#define ACT8865_DCDC3_VSET1 0x40
108#define ACT8865_DCDC3_VSET2 0x41
109#define ACT8865_DCDC3_CTRL 0x42
110#define ACT8865_LDO1_VSET 0x50
111#define ACT8865_LDO1_CTRL 0x51
112#define ACT8865_LDO2_VSET 0x54
113#define ACT8865_LDO2_CTRL 0x55
114#define ACT8865_LDO3_VSET 0x60
115#define ACT8865_LDO3_CTRL 0x61
116#define ACT8865_LDO4_VSET 0x64
117#define ACT8865_LDO4_CTRL 0x65
118#define ACT8865_MSTROFF 0x20
119
120/*
121 * Field Definitions.
122 */
123#define ACT8865_ENA 0x80 /* ON - [7] */
124#define ACT8865_VSEL_MASK 0x3F /* VSET - [5:0] */
125
126
127#define ACT8600_LDO10_ENA 0x40 /* ON - [6] */
128#define ACT8600_SUDCDC_VSEL_MASK 0xFF /* SUDCDC VSET - [7:0] */
129
130/*
131 * ACT8865 voltage number
132 */
133#define ACT8865_VOLTAGE_NUM 64
134#define ACT8600_SUDCDC_VOLTAGE_NUM 256
135
136struct act8865 {
137 struct regmap *regmap;
138 int off_reg;
139 int off_mask;
140};
141
142static const struct regmap_range act8600_reg_ranges[] = {
143 regmap_reg_range(0x00, 0x01),
144 regmap_reg_range(0x10, 0x10),
145 regmap_reg_range(0x12, 0x12),
146 regmap_reg_range(0x20, 0x20),
147 regmap_reg_range(0x22, 0x22),
148 regmap_reg_range(0x30, 0x30),
149 regmap_reg_range(0x32, 0x32),
150 regmap_reg_range(0x40, 0x41),
151 regmap_reg_range(0x50, 0x51),
152 regmap_reg_range(0x60, 0x61),
153 regmap_reg_range(0x70, 0x71),
154 regmap_reg_range(0x80, 0x81),
155 regmap_reg_range(0x91, 0x91),
156 regmap_reg_range(0xA1, 0xA1),
157 regmap_reg_range(0xA8, 0xAA),
158 regmap_reg_range(0xB0, 0xB0),
159 regmap_reg_range(0xB2, 0xB2),
160 regmap_reg_range(0xC1, 0xC1),
161};
162
163static const struct regmap_range act8600_reg_ro_ranges[] = {
164 regmap_reg_range(0xAA, 0xAA),
165 regmap_reg_range(0xC1, 0xC1),
166};
167
168static const struct regmap_range act8600_reg_volatile_ranges[] = {
169 regmap_reg_range(0x00, 0x01),
170 regmap_reg_range(0x12, 0x12),
171 regmap_reg_range(0x22, 0x22),
172 regmap_reg_range(0x32, 0x32),
173 regmap_reg_range(0x41, 0x41),
174 regmap_reg_range(0x51, 0x51),
175 regmap_reg_range(0x61, 0x61),
176 regmap_reg_range(0x71, 0x71),
177 regmap_reg_range(0x81, 0x81),
178 regmap_reg_range(0xA8, 0xA8),
179 regmap_reg_range(0xAA, 0xAA),
180 regmap_reg_range(0xB0, 0xB0),
181 regmap_reg_range(0xC1, 0xC1),
182};
183
184static const struct regmap_access_table act8600_write_ranges_table = {
185 .yes_ranges = act8600_reg_ranges,
186 .n_yes_ranges = ARRAY_SIZE(act8600_reg_ranges),
187 .no_ranges = act8600_reg_ro_ranges,
188 .n_no_ranges = ARRAY_SIZE(act8600_reg_ro_ranges),
189};
190
191static const struct regmap_access_table act8600_read_ranges_table = {
192 .yes_ranges = act8600_reg_ranges,
193 .n_yes_ranges = ARRAY_SIZE(act8600_reg_ranges),
194};
195
196static const struct regmap_access_table act8600_volatile_ranges_table = {
197 .yes_ranges = act8600_reg_volatile_ranges,
198 .n_yes_ranges = ARRAY_SIZE(act8600_reg_volatile_ranges),
199};
200
201static const struct regmap_config act8600_regmap_config = {
202 .reg_bits = 8,
203 .val_bits = 8,
204 .max_register = 0xFF,
205 .wr_table = &act8600_write_ranges_table,
206 .rd_table = &act8600_read_ranges_table,
207 .volatile_table = &act8600_volatile_ranges_table,
208};
209
210static const struct regmap_config act8865_regmap_config = {
211 .reg_bits = 8,
212 .val_bits = 8,
213};
214
215static const struct regulator_linear_range act8865_voltage_ranges[] = {
216 REGULATOR_LINEAR_RANGE(600000, 0, 23, 25000),
217 REGULATOR_LINEAR_RANGE(1200000, 24, 47, 50000),
218 REGULATOR_LINEAR_RANGE(2400000, 48, 63, 100000),
219};
220
221static const struct regulator_linear_range act8600_sudcdc_voltage_ranges[] = {
222 REGULATOR_LINEAR_RANGE(3000000, 0, 63, 0),
223 REGULATOR_LINEAR_RANGE(3000000, 64, 159, 100000),
224 REGULATOR_LINEAR_RANGE(12600000, 160, 191, 200000),
225 REGULATOR_LINEAR_RANGE(19000000, 192, 247, 400000),
226 REGULATOR_LINEAR_RANGE(41400000, 248, 255, 0),
227};
228
229static struct regulator_ops act8865_ops = {
230 .list_voltage = regulator_list_voltage_linear_range,
231 .map_voltage = regulator_map_voltage_linear_range,
232 .get_voltage_sel = regulator_get_voltage_sel_regmap,
233 .set_voltage_sel = regulator_set_voltage_sel_regmap,
234 .enable = regulator_enable_regmap,
235 .disable = regulator_disable_regmap,
236 .is_enabled = regulator_is_enabled_regmap,
237};
238
239static struct regulator_ops act8865_ldo_ops = {
240 .enable = regulator_enable_regmap,
241 .disable = regulator_disable_regmap,
242 .is_enabled = regulator_is_enabled_regmap,
243};
244
245#define ACT88xx_REG(_name, _family, _id, _vsel_reg, _supply) \
246 [_family##_ID_##_id] = { \
247 .name = _name, \
248 .supply_name = _supply, \
249 .id = _family##_ID_##_id, \
250 .type = REGULATOR_VOLTAGE, \
251 .ops = &act8865_ops, \
252 .n_voltages = ACT8865_VOLTAGE_NUM, \
253 .linear_ranges = act8865_voltage_ranges, \
254 .n_linear_ranges = ARRAY_SIZE(act8865_voltage_ranges), \
255 .vsel_reg = _family##_##_id##_##_vsel_reg, \
256 .vsel_mask = ACT8865_VSEL_MASK, \
257 .enable_reg = _family##_##_id##_CTRL, \
258 .enable_mask = ACT8865_ENA, \
259 .owner = THIS_MODULE, \
260 }
261
262static const struct regulator_desc act8600_regulators[] = {
263 ACT88xx_REG("DCDC1", ACT8600, DCDC1, VSET, "vp1"),
264 ACT88xx_REG("DCDC2", ACT8600, DCDC2, VSET, "vp2"),
265 ACT88xx_REG("DCDC3", ACT8600, DCDC3, VSET, "vp3"),
266 {
267 .name = "SUDCDC_REG4",
268 .id = ACT8600_ID_SUDCDC4,
269 .ops = &act8865_ops,
270 .type = REGULATOR_VOLTAGE,
271 .n_voltages = ACT8600_SUDCDC_VOLTAGE_NUM,
272 .linear_ranges = act8600_sudcdc_voltage_ranges,
273 .n_linear_ranges = ARRAY_SIZE(act8600_sudcdc_voltage_ranges),
274 .vsel_reg = ACT8600_SUDCDC4_VSET,
275 .vsel_mask = ACT8600_SUDCDC_VSEL_MASK,
276 .enable_reg = ACT8600_SUDCDC4_CTRL,
277 .enable_mask = ACT8865_ENA,
278 .owner = THIS_MODULE,
279 },
280 ACT88xx_REG("LDO5", ACT8600, LDO5, VSET, "inl"),
281 ACT88xx_REG("LDO6", ACT8600, LDO6, VSET, "inl"),
282 ACT88xx_REG("LDO7", ACT8600, LDO7, VSET, "inl"),
283 ACT88xx_REG("LDO8", ACT8600, LDO8, VSET, "inl"),
284 {
285 .name = "LDO_REG9",
286 .id = ACT8600_ID_LDO9,
287 .ops = &act8865_ldo_ops,
288 .type = REGULATOR_VOLTAGE,
289 .n_voltages = 1,
290 .fixed_uV = 3300000,
291 .enable_reg = ACT8600_LDO910_CTRL,
292 .enable_mask = ACT8865_ENA,
293 .owner = THIS_MODULE,
294 },
295 {
296 .name = "LDO_REG10",
297 .id = ACT8600_ID_LDO10,
298 .ops = &act8865_ldo_ops,
299 .type = REGULATOR_VOLTAGE,
300 .n_voltages = 1,
301 .fixed_uV = 1200000,
302 .enable_reg = ACT8600_LDO910_CTRL,
303 .enable_mask = ACT8600_LDO10_ENA,
304 .owner = THIS_MODULE,
305 },
306};
307
308static const struct regulator_desc act8846_regulators[] = {
309 ACT88xx_REG("REG1", ACT8846, REG1, VSET, "vp1"),
310 ACT88xx_REG("REG2", ACT8846, REG2, VSET0, "vp2"),
311 ACT88xx_REG("REG3", ACT8846, REG3, VSET0, "vp3"),
312 ACT88xx_REG("REG4", ACT8846, REG4, VSET0, "vp4"),
313 ACT88xx_REG("REG5", ACT8846, REG5, VSET, "inl1"),
314 ACT88xx_REG("REG6", ACT8846, REG6, VSET, "inl1"),
315 ACT88xx_REG("REG7", ACT8846, REG7, VSET, "inl1"),
316 ACT88xx_REG("REG8", ACT8846, REG8, VSET, "inl2"),
317 ACT88xx_REG("REG9", ACT8846, REG9, VSET, "inl2"),
318 ACT88xx_REG("REG10", ACT8846, REG10, VSET, "inl3"),
319 ACT88xx_REG("REG11", ACT8846, REG11, VSET, "inl3"),
320 ACT88xx_REG("REG12", ACT8846, REG12, VSET, "inl3"),
321};
322
323static const struct regulator_desc act8865_regulators[] = {
324 ACT88xx_REG("DCDC_REG1", ACT8865, DCDC1, VSET1, "vp1"),
325 ACT88xx_REG("DCDC_REG2", ACT8865, DCDC2, VSET1, "vp2"),
326 ACT88xx_REG("DCDC_REG3", ACT8865, DCDC3, VSET1, "vp3"),
327 ACT88xx_REG("LDO_REG1", ACT8865, LDO1, VSET, "inl45"),
328 ACT88xx_REG("LDO_REG2", ACT8865, LDO2, VSET, "inl45"),
329 ACT88xx_REG("LDO_REG3", ACT8865, LDO3, VSET, "inl67"),
330 ACT88xx_REG("LDO_REG4", ACT8865, LDO4, VSET, "inl67"),
331};
332
333static const struct regulator_desc act8865_alt_regulators[] = {
334 ACT88xx_REG("DCDC_REG1", ACT8865, DCDC1, VSET2, "vp1"),
335 ACT88xx_REG("DCDC_REG2", ACT8865, DCDC2, VSET2, "vp2"),
336 ACT88xx_REG("DCDC_REG3", ACT8865, DCDC3, VSET2, "vp3"),
337 ACT88xx_REG("LDO_REG1", ACT8865, LDO1, VSET, "inl45"),
338 ACT88xx_REG("LDO_REG2", ACT8865, LDO2, VSET, "inl45"),
339 ACT88xx_REG("LDO_REG3", ACT8865, LDO3, VSET, "inl67"),
340 ACT88xx_REG("LDO_REG4", ACT8865, LDO4, VSET, "inl67"),
341};
342
343#ifdef CONFIG_OF
344static const struct of_device_id act8865_dt_ids[] = {
345 { .compatible = "active-semi,act8600", .data = (void *)ACT8600 },
346 { .compatible = "active-semi,act8846", .data = (void *)ACT8846 },
347 { .compatible = "active-semi,act8865", .data = (void *)ACT8865 },
348 { }
349};
350MODULE_DEVICE_TABLE(of, act8865_dt_ids);
351
352static struct of_regulator_match act8846_matches[] = {
353 [ACT8846_ID_REG1] = { .name = "REG1" },
354 [ACT8846_ID_REG2] = { .name = "REG2" },
355 [ACT8846_ID_REG3] = { .name = "REG3" },
356 [ACT8846_ID_REG4] = { .name = "REG4" },
357 [ACT8846_ID_REG5] = { .name = "REG5" },
358 [ACT8846_ID_REG6] = { .name = "REG6" },
359 [ACT8846_ID_REG7] = { .name = "REG7" },
360 [ACT8846_ID_REG8] = { .name = "REG8" },
361 [ACT8846_ID_REG9] = { .name = "REG9" },
362 [ACT8846_ID_REG10] = { .name = "REG10" },
363 [ACT8846_ID_REG11] = { .name = "REG11" },
364 [ACT8846_ID_REG12] = { .name = "REG12" },
365};
366
367static struct of_regulator_match act8865_matches[] = {
368 [ACT8865_ID_DCDC1] = { .name = "DCDC_REG1"},
369 [ACT8865_ID_DCDC2] = { .name = "DCDC_REG2"},
370 [ACT8865_ID_DCDC3] = { .name = "DCDC_REG3"},
371 [ACT8865_ID_LDO1] = { .name = "LDO_REG1"},
372 [ACT8865_ID_LDO2] = { .name = "LDO_REG2"},
373 [ACT8865_ID_LDO3] = { .name = "LDO_REG3"},
374 [ACT8865_ID_LDO4] = { .name = "LDO_REG4"},
375};
376
377static struct of_regulator_match act8600_matches[] = {
378 [ACT8600_ID_DCDC1] = { .name = "DCDC_REG1"},
379 [ACT8600_ID_DCDC2] = { .name = "DCDC_REG2"},
380 [ACT8600_ID_DCDC3] = { .name = "DCDC_REG3"},
381 [ACT8600_ID_SUDCDC4] = { .name = "SUDCDC_REG4"},
382 [ACT8600_ID_LDO5] = { .name = "LDO_REG5"},
383 [ACT8600_ID_LDO6] = { .name = "LDO_REG6"},
384 [ACT8600_ID_LDO7] = { .name = "LDO_REG7"},
385 [ACT8600_ID_LDO8] = { .name = "LDO_REG8"},
386 [ACT8600_ID_LDO9] = { .name = "LDO_REG9"},
387 [ACT8600_ID_LDO10] = { .name = "LDO_REG10"},
388};
389
390static int act8865_pdata_from_dt(struct device *dev,
391 struct act8865_platform_data *pdata,
392 unsigned long type)
393{
394 int matched, i, num_matches;
395 struct device_node *np;
396 struct act8865_regulator_data *regulator;
397 struct of_regulator_match *matches;
398
399 switch (type) {
400 case ACT8600:
401 matches = act8600_matches;
402 num_matches = ARRAY_SIZE(act8600_matches);
403 break;
404 case ACT8846:
405 matches = act8846_matches;
406 num_matches = ARRAY_SIZE(act8846_matches);
407 break;
408 case ACT8865:
409 matches = act8865_matches;
410 num_matches = ARRAY_SIZE(act8865_matches);
411 break;
412 default:
413 dev_err(dev, "invalid device id %lu\n", type);
414 return -EINVAL;
415 }
416
417 np = of_get_child_by_name(dev->of_node, "regulators");
418 if (!np) {
419 dev_err(dev, "missing 'regulators' subnode in DT\n");
420 return -EINVAL;
421 }
422
423 matched = of_regulator_match(dev, np, matches, num_matches);
424 of_node_put(np);
425 if (matched <= 0)
426 return matched;
427
428 pdata->regulators = devm_kcalloc(dev,
429 num_matches,
430 sizeof(struct act8865_regulator_data),
431 GFP_KERNEL);
432 if (!pdata->regulators)
433 return -ENOMEM;
434
435 pdata->num_regulators = num_matches;
436 regulator = pdata->regulators;
437
438 for (i = 0; i < num_matches; i++) {
439 regulator->id = i;
440 regulator->name = matches[i].name;
441 regulator->init_data = matches[i].init_data;
442 regulator->of_node = matches[i].of_node;
443 regulator++;
444 }
445
446 return 0;
447}
448#else
449static inline int act8865_pdata_from_dt(struct device *dev,
450 struct act8865_platform_data *pdata,
451 unsigned long type)
452{
453 return 0;
454}
455#endif
456
457static struct act8865_regulator_data *act8865_get_regulator_data(
458 int id, struct act8865_platform_data *pdata)
459{
460 int i;
461
462 if (!pdata)
463 return NULL;
464
465 for (i = 0; i < pdata->num_regulators; i++) {
466 if (pdata->regulators[i].id == id)
467 return &pdata->regulators[i];
468 }
469
470 return NULL;
471}
472
473static struct i2c_client *act8865_i2c_client;
474static void act8865_power_off(void)
475{
476 struct act8865 *act8865;
477
478 act8865 = i2c_get_clientdata(act8865_i2c_client);
479 regmap_write(act8865->regmap, act8865->off_reg, act8865->off_mask);
480 while (1);
481}
482
483static int act8865_pmic_probe(struct i2c_client *client,
484 const struct i2c_device_id *i2c_id)
485{
486 const struct regulator_desc *regulators;
487 struct act8865_platform_data pdata_of, *pdata;
488 struct device *dev = &client->dev;
489 int i, ret, num_regulators;
490 struct act8865 *act8865;
491 const struct regmap_config *regmap_config;
492 unsigned long type;
493 int off_reg, off_mask;
494 int voltage_select = 0;
495
496 pdata = dev_get_platdata(dev);
497
498 if (dev->of_node && !pdata) {
499 const struct of_device_id *id;
500
501 id = of_match_device(of_match_ptr(act8865_dt_ids), dev);
502 if (!id)
503 return -ENODEV;
504
505 type = (unsigned long) id->data;
506
507 voltage_select = !!of_get_property(dev->of_node,
508 "active-semi,vsel-high",
509 NULL);
510 } else {
511 type = i2c_id->driver_data;
512 }
513
514 switch (type) {
515 case ACT8600:
516 regulators = act8600_regulators;
517 num_regulators = ARRAY_SIZE(act8600_regulators);
518 regmap_config = &act8600_regmap_config;
519 off_reg = -1;
520 off_mask = -1;
521 break;
522 case ACT8846:
523 regulators = act8846_regulators;
524 num_regulators = ARRAY_SIZE(act8846_regulators);
525 regmap_config = &act8865_regmap_config;
526 off_reg = ACT8846_GLB_OFF_CTRL;
527 off_mask = ACT8846_OFF_SYSMASK;
528 break;
529 case ACT8865:
530 if (voltage_select) {
531 regulators = act8865_alt_regulators;
532 num_regulators = ARRAY_SIZE(act8865_alt_regulators);
533 } else {
534 regulators = act8865_regulators;
535 num_regulators = ARRAY_SIZE(act8865_regulators);
536 }
537 regmap_config = &act8865_regmap_config;
538 off_reg = ACT8865_SYS_CTRL;
539 off_mask = ACT8865_MSTROFF;
540 break;
541 default:
542 dev_err(dev, "invalid device id %lu\n", type);
543 return -EINVAL;
544 }
545
546 if (dev->of_node && !pdata) {
547 ret = act8865_pdata_from_dt(dev, &pdata_of, type);
548 if (ret < 0)
549 return ret;
550
551 pdata = &pdata_of;
552 }
553
554 act8865 = devm_kzalloc(dev, sizeof(struct act8865), GFP_KERNEL);
555 if (!act8865)
556 return -ENOMEM;
557
558 act8865->regmap = devm_regmap_init_i2c(client, regmap_config);
559 if (IS_ERR(act8865->regmap)) {
560 ret = PTR_ERR(act8865->regmap);
561 dev_err(dev, "Failed to allocate register map: %d\n", ret);
562 return ret;
563 }
564
565 if (of_device_is_system_power_controller(dev->of_node)) {
566 if (!pm_power_off && (off_reg > 0)) {
567 act8865_i2c_client = client;
568 act8865->off_reg = off_reg;
569 act8865->off_mask = off_mask;
570 pm_power_off = act8865_power_off;
571 } else {
572 dev_err(dev, "Failed to set poweroff capability, already defined\n");
573 }
574 }
575
576 /* Finally register devices */
577 for (i = 0; i < num_regulators; i++) {
578 const struct regulator_desc *desc = &regulators[i];
579 struct regulator_config config = { };
580 struct act8865_regulator_data *rdata;
581 struct regulator_dev *rdev;
582
583 config.dev = dev;
584 config.driver_data = act8865;
585 config.regmap = act8865->regmap;
586
587 rdata = act8865_get_regulator_data(desc->id, pdata);
588 if (rdata) {
589 config.init_data = rdata->init_data;
590 config.of_node = rdata->of_node;
591 }
592
593 rdev = devm_regulator_register(dev, desc, &config);
594 if (IS_ERR(rdev)) {
595 dev_err(dev, "failed to register %s\n", desc->name);
596 return PTR_ERR(rdev);
597 }
598 }
599
600 i2c_set_clientdata(client, act8865);
601
602 return 0;
603}
604
605static const struct i2c_device_id act8865_ids[] = {
606 { .name = "act8600", .driver_data = ACT8600 },
607 { .name = "act8846", .driver_data = ACT8846 },
608 { .name = "act8865", .driver_data = ACT8865 },
609 { },
610};
611MODULE_DEVICE_TABLE(i2c, act8865_ids);
612
613static struct i2c_driver act8865_pmic_driver = {
614 .driver = {
615 .name = "act8865",
616 },
617 .probe = act8865_pmic_probe,
618 .id_table = act8865_ids,
619};
620
621module_i2c_driver(act8865_pmic_driver);
622
623MODULE_DESCRIPTION("active-semi act88xx voltage regulator driver");
624MODULE_AUTHOR("Wenyou Yang <wenyou.yang@atmel.com>");
625MODULE_LICENSE("GPL v2");
626