1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * act8865-regulator.c - Voltage regulation for active-semi ACT88xx PMUs
4 *
5 * http://www.active-semi.com/products/power-management-units/act88xx/
6 *
7 * Copyright (C) 2013 Atmel Corporation
8 */
9
10 #include <linux/module.h>
11 #include <linux/init.h>
12 #include <linux/i2c.h>
13 #include <linux/err.h>
14 #include <linux/platform_device.h>
15 #include <linux/regulator/driver.h>
16 #include <linux/regulator/act8865.h>
17 #include <linux/of.h>
18 #include <linux/of_device.h>
19 #include <linux/power_supply.h>
20 #include <linux/regulator/of_regulator.h>
21 #include <linux/regmap.h>
22 #include <dt-bindings/regulator/active-semi,8865-regulator.h>
23
24 /*
25 * ACT8600 Global Register Map.
26 */
27 #define ACT8600_SYS_MODE 0x00
28 #define ACT8600_SYS_CTRL 0x01
29 #define ACT8600_DCDC1_VSET 0x10
30 #define ACT8600_DCDC1_CTRL 0x12
31 #define ACT8600_DCDC2_VSET 0x20
32 #define ACT8600_DCDC2_CTRL 0x22
33 #define ACT8600_DCDC3_VSET 0x30
34 #define ACT8600_DCDC3_CTRL 0x32
35 #define ACT8600_SUDCDC4_VSET 0x40
36 #define ACT8600_SUDCDC4_CTRL 0x41
37 #define ACT8600_LDO5_VSET 0x50
38 #define ACT8600_LDO5_CTRL 0x51
39 #define ACT8600_LDO6_VSET 0x60
40 #define ACT8600_LDO6_CTRL 0x61
41 #define ACT8600_LDO7_VSET 0x70
42 #define ACT8600_LDO7_CTRL 0x71
43 #define ACT8600_LDO8_VSET 0x80
44 #define ACT8600_LDO8_CTRL 0x81
45 #define ACT8600_LDO910_CTRL 0x91
46 #define ACT8600_APCH0 0xA1
47 #define ACT8600_APCH1 0xA8
48 #define ACT8600_APCH2 0xA9
49 #define ACT8600_APCH_STAT 0xAA
50 #define ACT8600_OTG0 0xB0
51 #define ACT8600_OTG1 0xB2
52
53 /*
54 * ACT8846 Global Register Map.
55 */
56 #define ACT8846_SYS0 0x00
57 #define ACT8846_SYS1 0x01
58 #define ACT8846_REG1_VSET 0x10
59 #define ACT8846_REG1_CTRL 0x12
60 #define ACT8846_REG2_VSET0 0x20
61 #define ACT8846_REG2_VSET1 0x21
62 #define ACT8846_REG2_CTRL 0x22
63 #define ACT8846_REG3_VSET0 0x30
64 #define ACT8846_REG3_VSET1 0x31
65 #define ACT8846_REG3_CTRL 0x32
66 #define ACT8846_REG4_VSET0 0x40
67 #define ACT8846_REG4_VSET1 0x41
68 #define ACT8846_REG4_CTRL 0x42
69 #define ACT8846_REG5_VSET 0x50
70 #define ACT8846_REG5_CTRL 0x51
71 #define ACT8846_REG6_VSET 0x58
72 #define ACT8846_REG6_CTRL 0x59
73 #define ACT8846_REG7_VSET 0x60
74 #define ACT8846_REG7_CTRL 0x61
75 #define ACT8846_REG8_VSET 0x68
76 #define ACT8846_REG8_CTRL 0x69
77 #define ACT8846_REG9_VSET 0x70
78 #define ACT8846_REG9_CTRL 0x71
79 #define ACT8846_REG10_VSET 0x80
80 #define ACT8846_REG10_CTRL 0x81
81 #define ACT8846_REG11_VSET 0x90
82 #define ACT8846_REG11_CTRL 0x91
83 #define ACT8846_REG12_VSET 0xa0
84 #define ACT8846_REG12_CTRL 0xa1
85 #define ACT8846_REG13_CTRL 0xb1
86 #define ACT8846_GLB_OFF_CTRL 0xc3
87 #define ACT8846_OFF_SYSMASK 0x18
88
89 /*
90 * ACT8865 Global Register Map.
91 */
92 #define ACT8865_SYS_MODE 0x00
93 #define ACT8865_SYS_CTRL 0x01
94 #define ACT8865_SYS_UNLK_REGS 0x0b
95 #define ACT8865_DCDC1_VSET1 0x20
96 #define ACT8865_DCDC1_VSET2 0x21
97 #define ACT8865_DCDC1_CTRL 0x22
98 #define ACT8865_DCDC1_SUS 0x24
99 #define ACT8865_DCDC2_VSET1 0x30
100 #define ACT8865_DCDC2_VSET2 0x31
101 #define ACT8865_DCDC2_CTRL 0x32
102 #define ACT8865_DCDC2_SUS 0x34
103 #define ACT8865_DCDC3_VSET1 0x40
104 #define ACT8865_DCDC3_VSET2 0x41
105 #define ACT8865_DCDC3_CTRL 0x42
106 #define ACT8865_DCDC3_SUS 0x44
107 #define ACT8865_LDO1_VSET 0x50
108 #define ACT8865_LDO1_CTRL 0x51
109 #define ACT8865_LDO1_SUS 0x52
110 #define ACT8865_LDO2_VSET 0x54
111 #define ACT8865_LDO2_CTRL 0x55
112 #define ACT8865_LDO2_SUS 0x56
113 #define ACT8865_LDO3_VSET 0x60
114 #define ACT8865_LDO3_CTRL 0x61
115 #define ACT8865_LDO3_SUS 0x62
116 #define ACT8865_LDO4_VSET 0x64
117 #define ACT8865_LDO4_CTRL 0x65
118 #define ACT8865_LDO4_SUS 0x66
119 #define ACT8865_MSTROFF 0x20
120
121 /*
122 * Field Definitions.
123 */
124 #define ACT8865_ENA 0x80 /* ON - [7] */
125 #define ACT8865_DIS 0x40 /* DIS - [6] */
126
127 #define ACT8865_VSEL_MASK 0x3F /* VSET - [5:0] */
128
129
130 #define ACT8600_LDO10_ENA 0x40 /* ON - [6] */
131 #define ACT8600_SUDCDC_VSEL_MASK 0xFF /* SUDCDC VSET - [7:0] */
132
133 #define ACT8600_APCH_CHG_ACIN BIT(7)
134 #define ACT8600_APCH_CHG_USB BIT(6)
135 #define ACT8600_APCH_CSTATE0 BIT(5)
136 #define ACT8600_APCH_CSTATE1 BIT(4)
137
138 /*
139 * ACT8865 voltage number
140 */
141 #define ACT8865_VOLTAGE_NUM 64
142 #define ACT8600_SUDCDC_VOLTAGE_NUM 256
143
144 struct act8865 {
145 struct regmap *regmap;
146 int off_reg;
147 int off_mask;
148 };
149
150 static const struct regmap_range act8600_reg_ranges[] = {
151 regmap_reg_range(0x00, 0x01),
152 regmap_reg_range(0x10, 0x10),
153 regmap_reg_range(0x12, 0x12),
154 regmap_reg_range(0x20, 0x20),
155 regmap_reg_range(0x22, 0x22),
156 regmap_reg_range(0x30, 0x30),
157 regmap_reg_range(0x32, 0x32),
158 regmap_reg_range(0x40, 0x41),
159 regmap_reg_range(0x50, 0x51),
160 regmap_reg_range(0x60, 0x61),
161 regmap_reg_range(0x70, 0x71),
162 regmap_reg_range(0x80, 0x81),
163 regmap_reg_range(0x91, 0x91),
164 regmap_reg_range(0xA1, 0xA1),
165 regmap_reg_range(0xA8, 0xAA),
166 regmap_reg_range(0xB0, 0xB0),
167 regmap_reg_range(0xB2, 0xB2),
168 regmap_reg_range(0xC1, 0xC1),
169 };
170
171 static const struct regmap_range act8600_reg_ro_ranges[] = {
172 regmap_reg_range(0xAA, 0xAA),
173 regmap_reg_range(0xC1, 0xC1),
174 };
175
176 static const struct regmap_range act8600_reg_volatile_ranges[] = {
177 regmap_reg_range(0x00, 0x01),
178 regmap_reg_range(0x12, 0x12),
179 regmap_reg_range(0x22, 0x22),
180 regmap_reg_range(0x32, 0x32),
181 regmap_reg_range(0x41, 0x41),
182 regmap_reg_range(0x51, 0x51),
183 regmap_reg_range(0x61, 0x61),
184 regmap_reg_range(0x71, 0x71),
185 regmap_reg_range(0x81, 0x81),
186 regmap_reg_range(0xA8, 0xA8),
187 regmap_reg_range(0xAA, 0xAA),
188 regmap_reg_range(0xB0, 0xB0),
189 regmap_reg_range(0xC1, 0xC1),
190 };
191
192 static const struct regmap_access_table act8600_write_ranges_table = {
193 .yes_ranges = act8600_reg_ranges,
194 .n_yes_ranges = ARRAY_SIZE(act8600_reg_ranges),
195 .no_ranges = act8600_reg_ro_ranges,
196 .n_no_ranges = ARRAY_SIZE(act8600_reg_ro_ranges),
197 };
198
199 static const struct regmap_access_table act8600_read_ranges_table = {
200 .yes_ranges = act8600_reg_ranges,
201 .n_yes_ranges = ARRAY_SIZE(act8600_reg_ranges),
202 };
203
204 static const struct regmap_access_table act8600_volatile_ranges_table = {
205 .yes_ranges = act8600_reg_volatile_ranges,
206 .n_yes_ranges = ARRAY_SIZE(act8600_reg_volatile_ranges),
207 };
208
209 static const struct regmap_config act8600_regmap_config = {
210 .reg_bits = 8,
211 .val_bits = 8,
212 .max_register = 0xFF,
213 .wr_table = &act8600_write_ranges_table,
214 .rd_table = &act8600_read_ranges_table,
215 .volatile_table = &act8600_volatile_ranges_table,
216 };
217
218 static const struct regmap_config act8865_regmap_config = {
219 .reg_bits = 8,
220 .val_bits = 8,
221 };
222
223 static const struct linear_range act8865_voltage_ranges[] = {
224 REGULATOR_LINEAR_RANGE(600000, 0, 23, 25000),
225 REGULATOR_LINEAR_RANGE(1200000, 24, 47, 50000),
226 REGULATOR_LINEAR_RANGE(2400000, 48, 63, 100000),
227 };
228
229 static const struct linear_range act8600_sudcdc_voltage_ranges[] = {
230 REGULATOR_LINEAR_RANGE(3000000, 0, 63, 0),
231 REGULATOR_LINEAR_RANGE(3000000, 64, 159, 100000),
232 REGULATOR_LINEAR_RANGE(12600000, 160, 191, 200000),
233 REGULATOR_LINEAR_RANGE(19000000, 192, 247, 400000),
234 REGULATOR_LINEAR_RANGE(41400000, 248, 255, 0),
235 };
236
act8865_set_suspend_state(struct regulator_dev * rdev,bool enable)237 static int act8865_set_suspend_state(struct regulator_dev *rdev, bool enable)
238 {
239 struct regmap *regmap = rdev->regmap;
240 int id = rdev->desc->id, reg, val;
241
242 switch (id) {
243 case ACT8865_ID_DCDC1:
244 reg = ACT8865_DCDC1_SUS;
245 val = 0xa8;
246 break;
247 case ACT8865_ID_DCDC2:
248 reg = ACT8865_DCDC2_SUS;
249 val = 0xa8;
250 break;
251 case ACT8865_ID_DCDC3:
252 reg = ACT8865_DCDC3_SUS;
253 val = 0xa8;
254 break;
255 case ACT8865_ID_LDO1:
256 reg = ACT8865_LDO1_SUS;
257 val = 0xe8;
258 break;
259 case ACT8865_ID_LDO2:
260 reg = ACT8865_LDO2_SUS;
261 val = 0xe8;
262 break;
263 case ACT8865_ID_LDO3:
264 reg = ACT8865_LDO3_SUS;
265 val = 0xe8;
266 break;
267 case ACT8865_ID_LDO4:
268 reg = ACT8865_LDO4_SUS;
269 val = 0xe8;
270 break;
271 default:
272 return -EINVAL;
273 }
274
275 if (enable)
276 val |= BIT(4);
277
278 /*
279 * Ask the PMIC to enable/disable this output when entering hibernate
280 * mode.
281 */
282 return regmap_write(regmap, reg, val);
283 }
284
act8865_set_suspend_enable(struct regulator_dev * rdev)285 static int act8865_set_suspend_enable(struct regulator_dev *rdev)
286 {
287 return act8865_set_suspend_state(rdev, true);
288 }
289
act8865_set_suspend_disable(struct regulator_dev * rdev)290 static int act8865_set_suspend_disable(struct regulator_dev *rdev)
291 {
292 return act8865_set_suspend_state(rdev, false);
293 }
294
act8865_of_map_mode(unsigned int mode)295 static unsigned int act8865_of_map_mode(unsigned int mode)
296 {
297 switch (mode) {
298 case ACT8865_REGULATOR_MODE_FIXED:
299 return REGULATOR_MODE_FAST;
300 case ACT8865_REGULATOR_MODE_NORMAL:
301 return REGULATOR_MODE_NORMAL;
302 case ACT8865_REGULATOR_MODE_LOWPOWER:
303 return REGULATOR_MODE_STANDBY;
304 default:
305 return REGULATOR_MODE_INVALID;
306 }
307 }
308
act8865_set_mode(struct regulator_dev * rdev,unsigned int mode)309 static int act8865_set_mode(struct regulator_dev *rdev, unsigned int mode)
310 {
311 struct regmap *regmap = rdev->regmap;
312 int id = rdev_get_id(rdev);
313 int reg, val = 0;
314
315 switch (id) {
316 case ACT8865_ID_DCDC1:
317 reg = ACT8865_DCDC1_CTRL;
318 break;
319 case ACT8865_ID_DCDC2:
320 reg = ACT8865_DCDC2_CTRL;
321 break;
322 case ACT8865_ID_DCDC3:
323 reg = ACT8865_DCDC3_CTRL;
324 break;
325 case ACT8865_ID_LDO1:
326 reg = ACT8865_LDO1_CTRL;
327 break;
328 case ACT8865_ID_LDO2:
329 reg = ACT8865_LDO2_CTRL;
330 break;
331 case ACT8865_ID_LDO3:
332 reg = ACT8865_LDO3_CTRL;
333 break;
334 case ACT8865_ID_LDO4:
335 reg = ACT8865_LDO4_CTRL;
336 break;
337 default:
338 return -EINVAL;
339 }
340
341 switch (mode) {
342 case REGULATOR_MODE_FAST:
343 case REGULATOR_MODE_NORMAL:
344 if (id <= ACT8865_ID_DCDC3)
345 val = BIT(5);
346 break;
347 case REGULATOR_MODE_STANDBY:
348 if (id > ACT8865_ID_DCDC3)
349 val = BIT(5);
350 break;
351 default:
352 return -EINVAL;
353 }
354
355 return regmap_update_bits(regmap, reg, BIT(5), val);
356 }
357
act8865_get_mode(struct regulator_dev * rdev)358 static unsigned int act8865_get_mode(struct regulator_dev *rdev)
359 {
360 struct regmap *regmap = rdev->regmap;
361 int id = rdev_get_id(rdev);
362 int reg, ret, val = 0;
363
364 switch (id) {
365 case ACT8865_ID_DCDC1:
366 reg = ACT8865_DCDC1_CTRL;
367 break;
368 case ACT8865_ID_DCDC2:
369 reg = ACT8865_DCDC2_CTRL;
370 break;
371 case ACT8865_ID_DCDC3:
372 reg = ACT8865_DCDC3_CTRL;
373 break;
374 case ACT8865_ID_LDO1:
375 reg = ACT8865_LDO1_CTRL;
376 break;
377 case ACT8865_ID_LDO2:
378 reg = ACT8865_LDO2_CTRL;
379 break;
380 case ACT8865_ID_LDO3:
381 reg = ACT8865_LDO3_CTRL;
382 break;
383 case ACT8865_ID_LDO4:
384 reg = ACT8865_LDO4_CTRL;
385 break;
386 default:
387 return -EINVAL;
388 }
389
390 ret = regmap_read(regmap, reg, &val);
391 if (ret)
392 return ret;
393
394 if (id <= ACT8865_ID_DCDC3 && (val & BIT(5)))
395 return REGULATOR_MODE_FAST;
396 else if (id > ACT8865_ID_DCDC3 && !(val & BIT(5)))
397 return REGULATOR_MODE_NORMAL;
398 else
399 return REGULATOR_MODE_STANDBY;
400 }
401
402 static const struct regulator_ops act8865_ops = {
403 .list_voltage = regulator_list_voltage_linear_range,
404 .map_voltage = regulator_map_voltage_linear_range,
405 .get_voltage_sel = regulator_get_voltage_sel_regmap,
406 .set_voltage_sel = regulator_set_voltage_sel_regmap,
407 .enable = regulator_enable_regmap,
408 .disable = regulator_disable_regmap,
409 .set_mode = act8865_set_mode,
410 .get_mode = act8865_get_mode,
411 .is_enabled = regulator_is_enabled_regmap,
412 .set_suspend_enable = act8865_set_suspend_enable,
413 .set_suspend_disable = act8865_set_suspend_disable,
414 };
415
416 static const struct regulator_ops act8865_ldo_ops = {
417 .list_voltage = regulator_list_voltage_linear_range,
418 .map_voltage = regulator_map_voltage_linear_range,
419 .get_voltage_sel = regulator_get_voltage_sel_regmap,
420 .set_voltage_sel = regulator_set_voltage_sel_regmap,
421 .enable = regulator_enable_regmap,
422 .disable = regulator_disable_regmap,
423 .set_mode = act8865_set_mode,
424 .get_mode = act8865_get_mode,
425 .is_enabled = regulator_is_enabled_regmap,
426 .set_suspend_enable = act8865_set_suspend_enable,
427 .set_suspend_disable = act8865_set_suspend_disable,
428 .set_pull_down = regulator_set_pull_down_regmap,
429 };
430
431 static const struct regulator_ops act8865_fixed_ldo_ops = {
432 .enable = regulator_enable_regmap,
433 .disable = regulator_disable_regmap,
434 .is_enabled = regulator_is_enabled_regmap,
435 };
436
437 #define ACT88xx_REG_(_name, _family, _id, _vsel_reg, _supply, _ops) \
438 [_family##_ID_##_id] = { \
439 .name = _name, \
440 .of_match = of_match_ptr(_name), \
441 .of_map_mode = act8865_of_map_mode, \
442 .regulators_node = of_match_ptr("regulators"), \
443 .supply_name = _supply, \
444 .id = _family##_ID_##_id, \
445 .type = REGULATOR_VOLTAGE, \
446 .ops = _ops, \
447 .n_voltages = ACT8865_VOLTAGE_NUM, \
448 .linear_ranges = act8865_voltage_ranges, \
449 .n_linear_ranges = ARRAY_SIZE(act8865_voltage_ranges), \
450 .vsel_reg = _family##_##_id##_##_vsel_reg, \
451 .vsel_mask = ACT8865_VSEL_MASK, \
452 .enable_reg = _family##_##_id##_CTRL, \
453 .enable_mask = ACT8865_ENA, \
454 .pull_down_reg = _family##_##_id##_CTRL, \
455 .pull_down_mask = ACT8865_DIS, \
456 .owner = THIS_MODULE, \
457 }
458
459 #define ACT88xx_REG(_name, _family, _id, _vsel_reg, _supply) \
460 ACT88xx_REG_(_name, _family, _id, _vsel_reg, _supply, &act8865_ops)
461
462 #define ACT88xx_LDO(_name, _family, _id, _vsel_reg, _supply) \
463 ACT88xx_REG_(_name, _family, _id, _vsel_reg, _supply, &act8865_ldo_ops)
464
465 static const struct regulator_desc act8600_regulators[] = {
466 ACT88xx_REG("DCDC1", ACT8600, DCDC1, VSET, "vp1"),
467 ACT88xx_REG("DCDC2", ACT8600, DCDC2, VSET, "vp2"),
468 ACT88xx_REG("DCDC3", ACT8600, DCDC3, VSET, "vp3"),
469 {
470 .name = "SUDCDC_REG4",
471 .of_match = of_match_ptr("SUDCDC_REG4"),
472 .regulators_node = of_match_ptr("regulators"),
473 .id = ACT8600_ID_SUDCDC4,
474 .ops = &act8865_ops,
475 .type = REGULATOR_VOLTAGE,
476 .n_voltages = ACT8600_SUDCDC_VOLTAGE_NUM,
477 .linear_ranges = act8600_sudcdc_voltage_ranges,
478 .n_linear_ranges = ARRAY_SIZE(act8600_sudcdc_voltage_ranges),
479 .vsel_reg = ACT8600_SUDCDC4_VSET,
480 .vsel_mask = ACT8600_SUDCDC_VSEL_MASK,
481 .enable_reg = ACT8600_SUDCDC4_CTRL,
482 .enable_mask = ACT8865_ENA,
483 .owner = THIS_MODULE,
484 },
485 ACT88xx_REG("LDO5", ACT8600, LDO5, VSET, "inl"),
486 ACT88xx_REG("LDO6", ACT8600, LDO6, VSET, "inl"),
487 ACT88xx_REG("LDO7", ACT8600, LDO7, VSET, "inl"),
488 ACT88xx_REG("LDO8", ACT8600, LDO8, VSET, "inl"),
489 {
490 .name = "LDO_REG9",
491 .of_match = of_match_ptr("LDO_REG9"),
492 .regulators_node = of_match_ptr("regulators"),
493 .id = ACT8600_ID_LDO9,
494 .ops = &act8865_fixed_ldo_ops,
495 .type = REGULATOR_VOLTAGE,
496 .n_voltages = 1,
497 .fixed_uV = 3300000,
498 .enable_reg = ACT8600_LDO910_CTRL,
499 .enable_mask = ACT8865_ENA,
500 .owner = THIS_MODULE,
501 },
502 {
503 .name = "LDO_REG10",
504 .of_match = of_match_ptr("LDO_REG10"),
505 .regulators_node = of_match_ptr("regulators"),
506 .id = ACT8600_ID_LDO10,
507 .ops = &act8865_fixed_ldo_ops,
508 .type = REGULATOR_VOLTAGE,
509 .n_voltages = 1,
510 .fixed_uV = 1200000,
511 .enable_reg = ACT8600_LDO910_CTRL,
512 .enable_mask = ACT8600_LDO10_ENA,
513 .owner = THIS_MODULE,
514 },
515 };
516
517 static const struct regulator_desc act8846_regulators[] = {
518 ACT88xx_REG("REG1", ACT8846, REG1, VSET, "vp1"),
519 ACT88xx_REG("REG2", ACT8846, REG2, VSET0, "vp2"),
520 ACT88xx_REG("REG3", ACT8846, REG3, VSET0, "vp3"),
521 ACT88xx_REG("REG4", ACT8846, REG4, VSET0, "vp4"),
522 ACT88xx_REG("REG5", ACT8846, REG5, VSET, "inl1"),
523 ACT88xx_REG("REG6", ACT8846, REG6, VSET, "inl1"),
524 ACT88xx_REG("REG7", ACT8846, REG7, VSET, "inl1"),
525 ACT88xx_REG("REG8", ACT8846, REG8, VSET, "inl2"),
526 ACT88xx_REG("REG9", ACT8846, REG9, VSET, "inl2"),
527 ACT88xx_REG("REG10", ACT8846, REG10, VSET, "inl3"),
528 ACT88xx_REG("REG11", ACT8846, REG11, VSET, "inl3"),
529 ACT88xx_REG("REG12", ACT8846, REG12, VSET, "inl3"),
530 };
531
532 static const struct regulator_desc act8865_regulators[] = {
533 ACT88xx_REG("DCDC_REG1", ACT8865, DCDC1, VSET1, "vp1"),
534 ACT88xx_REG("DCDC_REG2", ACT8865, DCDC2, VSET1, "vp2"),
535 ACT88xx_REG("DCDC_REG3", ACT8865, DCDC3, VSET1, "vp3"),
536 ACT88xx_LDO("LDO_REG1", ACT8865, LDO1, VSET, "inl45"),
537 ACT88xx_LDO("LDO_REG2", ACT8865, LDO2, VSET, "inl45"),
538 ACT88xx_LDO("LDO_REG3", ACT8865, LDO3, VSET, "inl67"),
539 ACT88xx_LDO("LDO_REG4", ACT8865, LDO4, VSET, "inl67"),
540 };
541
542 static const struct regulator_desc act8865_alt_regulators[] = {
543 ACT88xx_REG("DCDC_REG1", ACT8865, DCDC1, VSET2, "vp1"),
544 ACT88xx_REG("DCDC_REG2", ACT8865, DCDC2, VSET2, "vp2"),
545 ACT88xx_REG("DCDC_REG3", ACT8865, DCDC3, VSET2, "vp3"),
546 ACT88xx_LDO("LDO_REG1", ACT8865, LDO1, VSET, "inl45"),
547 ACT88xx_LDO("LDO_REG2", ACT8865, LDO2, VSET, "inl45"),
548 ACT88xx_LDO("LDO_REG3", ACT8865, LDO3, VSET, "inl67"),
549 ACT88xx_LDO("LDO_REG4", ACT8865, LDO4, VSET, "inl67"),
550 };
551
552 #ifdef CONFIG_OF
553 static const struct of_device_id act8865_dt_ids[] = {
554 { .compatible = "active-semi,act8600", .data = (void *)ACT8600 },
555 { .compatible = "active-semi,act8846", .data = (void *)ACT8846 },
556 { .compatible = "active-semi,act8865", .data = (void *)ACT8865 },
557 { }
558 };
559 MODULE_DEVICE_TABLE(of, act8865_dt_ids);
560 #endif
561
act8865_get_regulator_data(int id,struct act8865_platform_data * pdata)562 static struct act8865_regulator_data *act8865_get_regulator_data(
563 int id, struct act8865_platform_data *pdata)
564 {
565 int i;
566
567 for (i = 0; i < pdata->num_regulators; i++) {
568 if (pdata->regulators[i].id == id)
569 return &pdata->regulators[i];
570 }
571
572 return NULL;
573 }
574
575 static struct i2c_client *act8865_i2c_client;
act8865_power_off(void)576 static void act8865_power_off(void)
577 {
578 struct act8865 *act8865;
579
580 act8865 = i2c_get_clientdata(act8865_i2c_client);
581 regmap_write(act8865->regmap, act8865->off_reg, act8865->off_mask);
582 while (1);
583 }
584
act8600_charger_get_status(struct regmap * map)585 static int act8600_charger_get_status(struct regmap *map)
586 {
587 unsigned int val;
588 int ret;
589 u8 state0, state1;
590
591 ret = regmap_read(map, ACT8600_APCH_STAT, &val);
592 if (ret < 0)
593 return ret;
594
595 state0 = val & ACT8600_APCH_CSTATE0;
596 state1 = val & ACT8600_APCH_CSTATE1;
597
598 if (state0 && !state1)
599 return POWER_SUPPLY_STATUS_CHARGING;
600 if (!state0 && state1)
601 return POWER_SUPPLY_STATUS_NOT_CHARGING;
602 if (!state0 && !state1)
603 return POWER_SUPPLY_STATUS_DISCHARGING;
604
605 return POWER_SUPPLY_STATUS_UNKNOWN;
606 }
607
act8600_charger_get_property(struct power_supply * psy,enum power_supply_property psp,union power_supply_propval * val)608 static int act8600_charger_get_property(struct power_supply *psy,
609 enum power_supply_property psp, union power_supply_propval *val)
610 {
611 struct regmap *map = power_supply_get_drvdata(psy);
612 int ret;
613
614 switch (psp) {
615 case POWER_SUPPLY_PROP_STATUS:
616 ret = act8600_charger_get_status(map);
617 if (ret < 0)
618 return ret;
619
620 val->intval = ret;
621 break;
622 default:
623 return -EINVAL;
624 }
625
626 return 0;
627 }
628
629 static enum power_supply_property act8600_charger_properties[] = {
630 POWER_SUPPLY_PROP_STATUS,
631 };
632
633 static const struct power_supply_desc act8600_charger_desc = {
634 .name = "act8600-charger",
635 .type = POWER_SUPPLY_TYPE_BATTERY,
636 .properties = act8600_charger_properties,
637 .num_properties = ARRAY_SIZE(act8600_charger_properties),
638 .get_property = act8600_charger_get_property,
639 };
640
act8600_charger_probe(struct device * dev,struct regmap * regmap)641 static int act8600_charger_probe(struct device *dev, struct regmap *regmap)
642 {
643 struct power_supply *charger;
644 struct power_supply_config cfg = {
645 .drv_data = regmap,
646 .of_node = dev->of_node,
647 };
648
649 charger = devm_power_supply_register(dev, &act8600_charger_desc, &cfg);
650
651 return PTR_ERR_OR_ZERO(charger);
652 }
653
act8865_pmic_probe(struct i2c_client * client,const struct i2c_device_id * i2c_id)654 static int act8865_pmic_probe(struct i2c_client *client,
655 const struct i2c_device_id *i2c_id)
656 {
657 const struct regulator_desc *regulators;
658 struct act8865_platform_data *pdata = NULL;
659 struct device *dev = &client->dev;
660 int i, ret, num_regulators;
661 struct act8865 *act8865;
662 const struct regmap_config *regmap_config;
663 unsigned long type;
664 int off_reg, off_mask;
665 int voltage_select = 0;
666
667 if (dev->of_node) {
668 const struct of_device_id *id;
669
670 id = of_match_device(of_match_ptr(act8865_dt_ids), dev);
671 if (!id)
672 return -ENODEV;
673
674 type = (unsigned long) id->data;
675
676 voltage_select = !!of_get_property(dev->of_node,
677 "active-semi,vsel-high",
678 NULL);
679 } else {
680 type = i2c_id->driver_data;
681 pdata = dev_get_platdata(dev);
682 }
683
684 switch (type) {
685 case ACT8600:
686 regulators = act8600_regulators;
687 num_regulators = ARRAY_SIZE(act8600_regulators);
688 regmap_config = &act8600_regmap_config;
689 off_reg = -1;
690 off_mask = -1;
691 break;
692 case ACT8846:
693 regulators = act8846_regulators;
694 num_regulators = ARRAY_SIZE(act8846_regulators);
695 regmap_config = &act8865_regmap_config;
696 off_reg = ACT8846_GLB_OFF_CTRL;
697 off_mask = ACT8846_OFF_SYSMASK;
698 break;
699 case ACT8865:
700 if (voltage_select) {
701 regulators = act8865_alt_regulators;
702 num_regulators = ARRAY_SIZE(act8865_alt_regulators);
703 } else {
704 regulators = act8865_regulators;
705 num_regulators = ARRAY_SIZE(act8865_regulators);
706 }
707 regmap_config = &act8865_regmap_config;
708 off_reg = ACT8865_SYS_CTRL;
709 off_mask = ACT8865_MSTROFF;
710 break;
711 default:
712 dev_err(dev, "invalid device id %lu\n", type);
713 return -EINVAL;
714 }
715
716 act8865 = devm_kzalloc(dev, sizeof(struct act8865), GFP_KERNEL);
717 if (!act8865)
718 return -ENOMEM;
719
720 act8865->regmap = devm_regmap_init_i2c(client, regmap_config);
721 if (IS_ERR(act8865->regmap)) {
722 ret = PTR_ERR(act8865->regmap);
723 dev_err(dev, "Failed to allocate register map: %d\n", ret);
724 return ret;
725 }
726
727 if (of_device_is_system_power_controller(dev->of_node)) {
728 if (!pm_power_off && (off_reg > 0)) {
729 act8865_i2c_client = client;
730 act8865->off_reg = off_reg;
731 act8865->off_mask = off_mask;
732 pm_power_off = act8865_power_off;
733 } else {
734 dev_err(dev, "Failed to set poweroff capability, already defined\n");
735 }
736 }
737
738 /* Finally register devices */
739 for (i = 0; i < num_regulators; i++) {
740 const struct regulator_desc *desc = ®ulators[i];
741 struct regulator_config config = { };
742 struct regulator_dev *rdev;
743
744 config.dev = dev;
745 config.driver_data = act8865;
746 config.regmap = act8865->regmap;
747
748 if (pdata) {
749 struct act8865_regulator_data *rdata;
750
751 rdata = act8865_get_regulator_data(desc->id, pdata);
752 if (rdata) {
753 config.init_data = rdata->init_data;
754 config.of_node = rdata->of_node;
755 }
756 }
757
758 rdev = devm_regulator_register(dev, desc, &config);
759 if (IS_ERR(rdev)) {
760 dev_err(dev, "failed to register %s\n", desc->name);
761 return PTR_ERR(rdev);
762 }
763 }
764
765 if (type == ACT8600) {
766 ret = act8600_charger_probe(dev, act8865->regmap);
767 if (ret < 0) {
768 if (ret != -EPROBE_DEFER)
769 dev_err(dev, "Failed to probe charger");
770 return ret;
771 }
772 }
773
774 i2c_set_clientdata(client, act8865);
775
776 /* Unlock expert registers for ACT8865. */
777 return type != ACT8865 ? 0 : regmap_write(act8865->regmap,
778 ACT8865_SYS_UNLK_REGS, 0xef);
779 }
780
781 static const struct i2c_device_id act8865_ids[] = {
782 { .name = "act8600", .driver_data = ACT8600 },
783 { .name = "act8846", .driver_data = ACT8846 },
784 { .name = "act8865", .driver_data = ACT8865 },
785 { },
786 };
787 MODULE_DEVICE_TABLE(i2c, act8865_ids);
788
789 static struct i2c_driver act8865_pmic_driver = {
790 .driver = {
791 .name = "act8865",
792 },
793 .probe = act8865_pmic_probe,
794 .id_table = act8865_ids,
795 };
796
797 module_i2c_driver(act8865_pmic_driver);
798
799 MODULE_DESCRIPTION("active-semi act88xx voltage regulator driver");
800 MODULE_AUTHOR("Wenyou Yang <wenyou.yang@atmel.com>");
801 MODULE_LICENSE("GPL v2");
802