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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
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
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
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
122
123#define ACT8865_ENA 0x80
124#define ACT8865_VSEL_MASK 0x3F
125
126
127#define ACT8600_LDO10_ENA 0x40
128#define ACT8600_SUDCDC_VSEL_MASK 0xFF
129
130
131
132
133#define ACT8865_VOLTAGE_NUM 64
134#define ACT8600_SUDCDC_VOLTAGE_NUM 255
135
136struct act8865 {
137 struct regmap *regmap;
138 int off_reg;
139 int off_mask;
140};
141
142static const struct regmap_config act8865_regmap_config = {
143 .reg_bits = 8,
144 .val_bits = 8,
145};
146
147static const struct regulator_linear_range act8865_voltage_ranges[] = {
148 REGULATOR_LINEAR_RANGE(600000, 0, 23, 25000),
149 REGULATOR_LINEAR_RANGE(1200000, 24, 47, 50000),
150 REGULATOR_LINEAR_RANGE(2400000, 48, 63, 100000),
151};
152
153static const struct regulator_linear_range act8600_sudcdc_voltage_ranges[] = {
154 REGULATOR_LINEAR_RANGE(3000000, 0, 63, 0),
155 REGULATOR_LINEAR_RANGE(3000000, 64, 159, 100000),
156 REGULATOR_LINEAR_RANGE(12600000, 160, 191, 200000),
157 REGULATOR_LINEAR_RANGE(19000000, 191, 255, 400000),
158};
159
160static struct regulator_ops act8865_ops = {
161 .list_voltage = regulator_list_voltage_linear_range,
162 .map_voltage = regulator_map_voltage_linear_range,
163 .get_voltage_sel = regulator_get_voltage_sel_regmap,
164 .set_voltage_sel = regulator_set_voltage_sel_regmap,
165 .enable = regulator_enable_regmap,
166 .disable = regulator_disable_regmap,
167 .is_enabled = regulator_is_enabled_regmap,
168};
169
170static struct regulator_ops act8865_ldo_ops = {
171 .enable = regulator_enable_regmap,
172 .disable = regulator_disable_regmap,
173 .is_enabled = regulator_is_enabled_regmap,
174};
175
176#define ACT88xx_REG(_name, _family, _id, _vsel_reg, _supply) \
177 [_family##_ID_##_id] = { \
178 .name = _name, \
179 .supply_name = _supply, \
180 .id = _family##_ID_##_id, \
181 .type = REGULATOR_VOLTAGE, \
182 .ops = &act8865_ops, \
183 .n_voltages = ACT8865_VOLTAGE_NUM, \
184 .linear_ranges = act8865_voltage_ranges, \
185 .n_linear_ranges = ARRAY_SIZE(act8865_voltage_ranges), \
186 .vsel_reg = _family##_##_id##_##_vsel_reg, \
187 .vsel_mask = ACT8865_VSEL_MASK, \
188 .enable_reg = _family##_##_id##_CTRL, \
189 .enable_mask = ACT8865_ENA, \
190 .owner = THIS_MODULE, \
191 }
192
193static const struct regulator_desc act8600_regulators[] = {
194 ACT88xx_REG("DCDC1", ACT8600, DCDC1, VSET, "vp1"),
195 ACT88xx_REG("DCDC2", ACT8600, DCDC2, VSET, "vp2"),
196 ACT88xx_REG("DCDC3", ACT8600, DCDC3, VSET, "vp3"),
197 {
198 .name = "SUDCDC_REG4",
199 .id = ACT8600_ID_SUDCDC4,
200 .ops = &act8865_ops,
201 .type = REGULATOR_VOLTAGE,
202 .n_voltages = ACT8600_SUDCDC_VOLTAGE_NUM,
203 .linear_ranges = act8600_sudcdc_voltage_ranges,
204 .n_linear_ranges = ARRAY_SIZE(act8600_sudcdc_voltage_ranges),
205 .vsel_reg = ACT8600_SUDCDC4_VSET,
206 .vsel_mask = ACT8600_SUDCDC_VSEL_MASK,
207 .enable_reg = ACT8600_SUDCDC4_CTRL,
208 .enable_mask = ACT8865_ENA,
209 .owner = THIS_MODULE,
210 },
211 ACT88xx_REG("LDO5", ACT8600, LDO5, VSET, "inl"),
212 ACT88xx_REG("LDO6", ACT8600, LDO6, VSET, "inl"),
213 ACT88xx_REG("LDO7", ACT8600, LDO7, VSET, "inl"),
214 ACT88xx_REG("LDO8", ACT8600, LDO8, VSET, "inl"),
215 {
216 .name = "LDO_REG9",
217 .id = ACT8600_ID_LDO9,
218 .ops = &act8865_ldo_ops,
219 .type = REGULATOR_VOLTAGE,
220 .n_voltages = 1,
221 .fixed_uV = 1800000,
222 .enable_reg = ACT8600_LDO910_CTRL,
223 .enable_mask = ACT8865_ENA,
224 .owner = THIS_MODULE,
225 },
226 {
227 .name = "LDO_REG10",
228 .id = ACT8600_ID_LDO10,
229 .ops = &act8865_ldo_ops,
230 .type = REGULATOR_VOLTAGE,
231 .n_voltages = 1,
232 .fixed_uV = 1200000,
233 .enable_reg = ACT8600_LDO910_CTRL,
234 .enable_mask = ACT8600_LDO10_ENA,
235 .owner = THIS_MODULE,
236 },
237};
238
239static const struct regulator_desc act8846_regulators[] = {
240 ACT88xx_REG("REG1", ACT8846, REG1, VSET, "vp1"),
241 ACT88xx_REG("REG2", ACT8846, REG2, VSET0, "vp2"),
242 ACT88xx_REG("REG3", ACT8846, REG3, VSET0, "vp3"),
243 ACT88xx_REG("REG4", ACT8846, REG4, VSET0, "vp4"),
244 ACT88xx_REG("REG5", ACT8846, REG5, VSET, "inl1"),
245 ACT88xx_REG("REG6", ACT8846, REG6, VSET, "inl1"),
246 ACT88xx_REG("REG7", ACT8846, REG7, VSET, "inl1"),
247 ACT88xx_REG("REG8", ACT8846, REG8, VSET, "inl2"),
248 ACT88xx_REG("REG9", ACT8846, REG9, VSET, "inl2"),
249 ACT88xx_REG("REG10", ACT8846, REG10, VSET, "inl3"),
250 ACT88xx_REG("REG11", ACT8846, REG11, VSET, "inl3"),
251 ACT88xx_REG("REG12", ACT8846, REG12, VSET, "inl3"),
252};
253
254static const struct regulator_desc act8865_regulators[] = {
255 ACT88xx_REG("DCDC_REG1", ACT8865, DCDC1, VSET1, "vp1"),
256 ACT88xx_REG("DCDC_REG2", ACT8865, DCDC2, VSET1, "vp2"),
257 ACT88xx_REG("DCDC_REG3", ACT8865, DCDC3, VSET1, "vp3"),
258 ACT88xx_REG("LDO_REG1", ACT8865, LDO1, VSET, "inl45"),
259 ACT88xx_REG("LDO_REG2", ACT8865, LDO2, VSET, "inl45"),
260 ACT88xx_REG("LDO_REG3", ACT8865, LDO3, VSET, "inl67"),
261 ACT88xx_REG("LDO_REG4", ACT8865, LDO4, VSET, "inl67"),
262};
263
264#ifdef CONFIG_OF
265static const struct of_device_id act8865_dt_ids[] = {
266 { .compatible = "active-semi,act8600", .data = (void *)ACT8600 },
267 { .compatible = "active-semi,act8846", .data = (void *)ACT8846 },
268 { .compatible = "active-semi,act8865", .data = (void *)ACT8865 },
269 { }
270};
271MODULE_DEVICE_TABLE(of, act8865_dt_ids);
272
273static struct of_regulator_match act8846_matches[] = {
274 [ACT8846_ID_REG1] = { .name = "REG1" },
275 [ACT8846_ID_REG2] = { .name = "REG2" },
276 [ACT8846_ID_REG3] = { .name = "REG3" },
277 [ACT8846_ID_REG4] = { .name = "REG4" },
278 [ACT8846_ID_REG5] = { .name = "REG5" },
279 [ACT8846_ID_REG6] = { .name = "REG6" },
280 [ACT8846_ID_REG7] = { .name = "REG7" },
281 [ACT8846_ID_REG8] = { .name = "REG8" },
282 [ACT8846_ID_REG9] = { .name = "REG9" },
283 [ACT8846_ID_REG10] = { .name = "REG10" },
284 [ACT8846_ID_REG11] = { .name = "REG11" },
285 [ACT8846_ID_REG12] = { .name = "REG12" },
286};
287
288static struct of_regulator_match act8865_matches[] = {
289 [ACT8865_ID_DCDC1] = { .name = "DCDC_REG1"},
290 [ACT8865_ID_DCDC2] = { .name = "DCDC_REG2"},
291 [ACT8865_ID_DCDC3] = { .name = "DCDC_REG3"},
292 [ACT8865_ID_LDO1] = { .name = "LDO_REG1"},
293 [ACT8865_ID_LDO2] = { .name = "LDO_REG2"},
294 [ACT8865_ID_LDO3] = { .name = "LDO_REG3"},
295 [ACT8865_ID_LDO4] = { .name = "LDO_REG4"},
296};
297
298static struct of_regulator_match act8600_matches[] = {
299 [ACT8600_ID_DCDC1] = { .name = "DCDC_REG1"},
300 [ACT8600_ID_DCDC2] = { .name = "DCDC_REG2"},
301 [ACT8600_ID_DCDC3] = { .name = "DCDC_REG3"},
302 [ACT8600_ID_SUDCDC4] = { .name = "SUDCDC_REG4"},
303 [ACT8600_ID_LDO5] = { .name = "LDO_REG5"},
304 [ACT8600_ID_LDO6] = { .name = "LDO_REG6"},
305 [ACT8600_ID_LDO7] = { .name = "LDO_REG7"},
306 [ACT8600_ID_LDO8] = { .name = "LDO_REG8"},
307 [ACT8600_ID_LDO9] = { .name = "LDO_REG9"},
308 [ACT8600_ID_LDO10] = { .name = "LDO_REG10"},
309};
310
311static int act8865_pdata_from_dt(struct device *dev,
312 struct device_node **of_node,
313 struct act8865_platform_data *pdata,
314 unsigned long type)
315{
316 int matched, i, num_matches;
317 struct device_node *np;
318 struct act8865_regulator_data *regulator;
319 struct of_regulator_match *matches;
320
321 np = of_get_child_by_name(dev->of_node, "regulators");
322 if (!np) {
323 dev_err(dev, "missing 'regulators' subnode in DT\n");
324 return -EINVAL;
325 }
326
327 switch (type) {
328 case ACT8600:
329 matches = act8600_matches;
330 num_matches = ARRAY_SIZE(act8600_matches);
331 break;
332 case ACT8846:
333 matches = act8846_matches;
334 num_matches = ARRAY_SIZE(act8846_matches);
335 break;
336 case ACT8865:
337 matches = act8865_matches;
338 num_matches = ARRAY_SIZE(act8865_matches);
339 break;
340 default:
341 dev_err(dev, "invalid device id %lu\n", type);
342 return -EINVAL;
343 }
344
345 matched = of_regulator_match(dev, np, matches, num_matches);
346 of_node_put(np);
347 if (matched <= 0)
348 return matched;
349
350 pdata->regulators = devm_kzalloc(dev,
351 sizeof(struct act8865_regulator_data) *
352 num_matches, GFP_KERNEL);
353 if (!pdata->regulators)
354 return -ENOMEM;
355
356 pdata->num_regulators = num_matches;
357 regulator = pdata->regulators;
358
359 for (i = 0; i < num_matches; i++) {
360 regulator->id = i;
361 regulator->name = matches[i].name;
362 regulator->platform_data = matches[i].init_data;
363 of_node[i] = matches[i].of_node;
364 regulator++;
365 }
366
367 return 0;
368}
369#else
370static inline int act8865_pdata_from_dt(struct device *dev,
371 struct device_node **of_node,
372 struct act8865_platform_data *pdata,
373 unsigned long type)
374{
375 return 0;
376}
377#endif
378
379static struct regulator_init_data
380*act8865_get_init_data(int id, struct act8865_platform_data *pdata)
381{
382 int i;
383
384 if (!pdata)
385 return NULL;
386
387 for (i = 0; i < pdata->num_regulators; i++) {
388 if (pdata->regulators[i].id == id)
389 return pdata->regulators[i].platform_data;
390 }
391
392 return NULL;
393}
394
395static struct i2c_client *act8865_i2c_client;
396static void act8865_power_off(void)
397{
398 struct act8865 *act8865;
399
400 act8865 = i2c_get_clientdata(act8865_i2c_client);
401 regmap_write(act8865->regmap, act8865->off_reg, act8865->off_mask);
402 while (1);
403}
404
405static int act8865_pmic_probe(struct i2c_client *client,
406 const struct i2c_device_id *i2c_id)
407{
408 static const struct regulator_desc *regulators;
409 struct act8865_platform_data pdata_of, *pdata;
410 struct device *dev = &client->dev;
411 struct device_node **of_node;
412 int i, ret, num_regulators;
413 struct act8865 *act8865;
414 unsigned long type;
415 int off_reg, off_mask;
416
417 pdata = dev_get_platdata(dev);
418
419 if (dev->of_node && !pdata) {
420 const struct of_device_id *id;
421
422 id = of_match_device(of_match_ptr(act8865_dt_ids), dev);
423 if (!id)
424 return -ENODEV;
425
426 type = (unsigned long) id->data;
427 } else {
428 type = i2c_id->driver_data;
429 }
430
431 switch (type) {
432 case ACT8600:
433 regulators = act8600_regulators;
434 num_regulators = ARRAY_SIZE(act8600_regulators);
435 off_reg = -1;
436 off_mask = -1;
437 break;
438 case ACT8846:
439 regulators = act8846_regulators;
440 num_regulators = ARRAY_SIZE(act8846_regulators);
441 off_reg = ACT8846_GLB_OFF_CTRL;
442 off_mask = ACT8846_OFF_SYSMASK;
443 break;
444 case ACT8865:
445 regulators = act8865_regulators;
446 num_regulators = ARRAY_SIZE(act8865_regulators);
447 off_reg = ACT8865_SYS_CTRL;
448 off_mask = ACT8865_MSTROFF;
449 break;
450 default:
451 dev_err(dev, "invalid device id %lu\n", type);
452 return -EINVAL;
453 }
454
455 of_node = devm_kzalloc(dev, sizeof(struct device_node *) *
456 num_regulators, GFP_KERNEL);
457 if (!of_node)
458 return -ENOMEM;
459
460 if (dev->of_node && !pdata) {
461 ret = act8865_pdata_from_dt(dev, of_node, &pdata_of, type);
462 if (ret < 0)
463 return ret;
464
465 pdata = &pdata_of;
466 }
467
468 if (pdata->num_regulators > num_regulators) {
469 dev_err(dev, "too many regulators: %d\n",
470 pdata->num_regulators);
471 return -EINVAL;
472 }
473
474 act8865 = devm_kzalloc(dev, sizeof(struct act8865), GFP_KERNEL);
475 if (!act8865)
476 return -ENOMEM;
477
478 act8865->regmap = devm_regmap_init_i2c(client, &act8865_regmap_config);
479 if (IS_ERR(act8865->regmap)) {
480 ret = PTR_ERR(act8865->regmap);
481 dev_err(&client->dev, "Failed to allocate register map: %d\n",
482 ret);
483 return ret;
484 }
485
486 if (of_device_is_system_power_controller(dev->of_node)) {
487 if (!pm_power_off && (off_reg > 0)) {
488 act8865_i2c_client = client;
489 act8865->off_reg = off_reg;
490 act8865->off_mask = off_mask;
491 pm_power_off = act8865_power_off;
492 } else {
493 dev_err(dev, "Failed to set poweroff capability, already defined\n");
494 }
495 }
496
497
498 for (i = 0; i < num_regulators; i++) {
499 const struct regulator_desc *desc = ®ulators[i];
500 struct regulator_config config = { };
501 struct regulator_dev *rdev;
502
503 config.dev = dev;
504 config.init_data = act8865_get_init_data(desc->id, pdata);
505 config.of_node = of_node[i];
506 config.driver_data = act8865;
507 config.regmap = act8865->regmap;
508
509 rdev = devm_regulator_register(&client->dev, desc, &config);
510 if (IS_ERR(rdev)) {
511 dev_err(dev, "failed to register %s\n", desc->name);
512 return PTR_ERR(rdev);
513 }
514 }
515
516 i2c_set_clientdata(client, act8865);
517 devm_kfree(dev, of_node);
518
519 return 0;
520}
521
522static const struct i2c_device_id act8865_ids[] = {
523 { .name = "act8600", .driver_data = ACT8600 },
524 { .name = "act8846", .driver_data = ACT8846 },
525 { .name = "act8865", .driver_data = ACT8865 },
526 { },
527};
528MODULE_DEVICE_TABLE(i2c, act8865_ids);
529
530static struct i2c_driver act8865_pmic_driver = {
531 .driver = {
532 .name = "act8865",
533 .owner = THIS_MODULE,
534 },
535 .probe = act8865_pmic_probe,
536 .id_table = act8865_ids,
537};
538
539module_i2c_driver(act8865_pmic_driver);
540
541MODULE_DESCRIPTION("active-semi act88xx voltage regulator driver");
542MODULE_AUTHOR("Wenyou Yang <wenyou.yang@atmel.com>");
543MODULE_LICENSE("GPL v2");
544
