1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (c) 2021 MediaTek Inc.
4 */
5
6#include <linux/devm-helpers.h>
7#include <linux/init.h>
8#include <linux/interrupt.h>
9#include <linux/kernel.h>
10#include <linux/linear_range.h>
11#include <linux/module.h>
12#include <linux/of.h>
13#include <linux/platform_device.h>
14#include <linux/power_supply.h>
15#include <linux/property.h>
16#include <linux/regmap.h>
17#include <linux/regulator/driver.h>
18
19#define MT6360_PMU_CHG_CTRL1 0x311
20#define MT6360_PMU_CHG_CTRL2 0x312
21#define MT6360_PMU_CHG_CTRL3 0x313
22#define MT6360_PMU_CHG_CTRL4 0x314
23#define MT6360_PMU_CHG_CTRL5 0x315
24#define MT6360_PMU_CHG_CTRL6 0x316
25#define MT6360_PMU_CHG_CTRL7 0x317
26#define MT6360_PMU_CHG_CTRL8 0x318
27#define MT6360_PMU_CHG_CTRL9 0x319
28#define MT6360_PMU_CHG_CTRL10 0x31A
29#define MT6360_PMU_DEVICE_TYPE 0x322
30#define MT6360_PMU_USB_STATUS1 0x327
31#define MT6360_PMU_CHG_STAT 0x34A
32#define MT6360_PMU_CHG_CTRL19 0x361
33#define MT6360_PMU_FOD_STAT 0x3E7
34
35/* MT6360_PMU_CHG_CTRL1 */
36#define MT6360_FSLP_SHFT (3)
37#define MT6360_FSLP_MASK BIT(MT6360_FSLP_SHFT)
38#define MT6360_OPA_MODE_SHFT (0)
39#define MT6360_OPA_MODE_MASK BIT(MT6360_OPA_MODE_SHFT)
40/* MT6360_PMU_CHG_CTRL2 */
41#define MT6360_IINLMTSEL_SHFT (2)
42#define MT6360_IINLMTSEL_MASK GENMASK(3, 2)
43/* MT6360_PMU_CHG_CTRL3 */
44#define MT6360_IAICR_SHFT (2)
45#define MT6360_IAICR_MASK GENMASK(7, 2)
46#define MT6360_ILIM_EN_MASK BIT(0)
47/* MT6360_PMU_CHG_CTRL4 */
48#define MT6360_VOREG_SHFT (1)
49#define MT6360_VOREG_MASK GENMASK(7, 1)
50/* MT6360_PMU_CHG_CTRL5 */
51#define MT6360_VOBST_MASK GENMASK(7, 2)
52/* MT6360_PMU_CHG_CTRL6 */
53#define MT6360_VMIVR_SHFT (1)
54#define MT6360_VMIVR_MASK GENMASK(7, 1)
55/* MT6360_PMU_CHG_CTRL7 */
56#define MT6360_ICHG_SHFT (2)
57#define MT6360_ICHG_MASK GENMASK(7, 2)
58/* MT6360_PMU_CHG_CTRL8 */
59#define MT6360_IPREC_SHFT (0)
60#define MT6360_IPREC_MASK GENMASK(3, 0)
61/* MT6360_PMU_CHG_CTRL9 */
62#define MT6360_IEOC_SHFT (4)
63#define MT6360_IEOC_MASK GENMASK(7, 4)
64/* MT6360_PMU_CHG_CTRL10 */
65#define MT6360_OTG_OC_MASK GENMASK(3, 0)
66/* MT6360_PMU_DEVICE_TYPE */
67#define MT6360_USBCHGEN_MASK BIT(7)
68/* MT6360_PMU_USB_STATUS1 */
69#define MT6360_USB_STATUS_SHFT (4)
70#define MT6360_USB_STATUS_MASK GENMASK(6, 4)
71/* MT6360_PMU_CHG_STAT */
72#define MT6360_CHG_STAT_SHFT (6)
73#define MT6360_CHG_STAT_MASK GENMASK(7, 6)
74#define MT6360_VBAT_LVL_MASK BIT(5)
75/* MT6360_PMU_CHG_CTRL19 */
76#define MT6360_VINOVP_SHFT (5)
77#define MT6360_VINOVP_MASK GENMASK(6, 5)
78/* MT6360_PMU_FOD_STAT */
79#define MT6360_CHRDET_EXT_MASK BIT(4)
80
81/* uV */
82#define MT6360_VMIVR_MIN 3900000
83#define MT6360_VMIVR_MAX 13400000
84#define MT6360_VMIVR_STEP 100000
85/* uA */
86#define MT6360_ICHG_MIN 100000
87#define MT6360_ICHG_MAX 5000000
88#define MT6360_ICHG_STEP 100000
89/* uV */
90#define MT6360_VOREG_MIN 3900000
91#define MT6360_VOREG_MAX 4710000
92#define MT6360_VOREG_STEP 10000
93/* uA */
94#define MT6360_AICR_MIN 100000
95#define MT6360_AICR_MAX 3250000
96#define MT6360_AICR_STEP 50000
97/* uA */
98#define MT6360_IPREC_MIN 100000
99#define MT6360_IPREC_MAX 850000
100#define MT6360_IPREC_STEP 50000
101/* uA */
102#define MT6360_IEOC_MIN 100000
103#define MT6360_IEOC_MAX 850000
104#define MT6360_IEOC_STEP 50000
105
106enum {
107 MT6360_RANGE_VMIVR,
108 MT6360_RANGE_ICHG,
109 MT6360_RANGE_VOREG,
110 MT6360_RANGE_AICR,
111 MT6360_RANGE_IPREC,
112 MT6360_RANGE_IEOC,
113 MT6360_RANGE_MAX,
114};
115
116static const struct linear_range mt6360_chg_range[MT6360_RANGE_MAX] = {
117 LINEAR_RANGE_IDX(MT6360_RANGE_VMIVR, 3900000, 0, 0x5F, 100000),
118 LINEAR_RANGE_IDX(MT6360_RANGE_ICHG, 100000, 0, 0x31, 100000),
119 LINEAR_RANGE_IDX(MT6360_RANGE_VOREG, 3900000, 0, 0x51, 10000),
120 LINEAR_RANGE_IDX(MT6360_RANGE_AICR, 100000, 0, 0x3F, 50000),
121 LINEAR_RANGE_IDX(MT6360_RANGE_IPREC, 100000, 0, 0x0F, 50000),
122 LINEAR_RANGE_IDX(MT6360_RANGE_IEOC, 100000, 0, 0x0F, 50000),
123};
124
125struct mt6360_chg_info {
126 struct device *dev;
127 struct regmap *regmap;
128 struct power_supply_desc psy_desc;
129 struct power_supply *psy;
130 struct regulator_dev *otg_rdev;
131 struct mutex chgdet_lock;
132 u32 vinovp;
133 bool pwr_rdy;
134 bool bc12_en;
135 int psy_usb_type;
136 struct work_struct chrdet_work;
137};
138
139enum mt6360_iinlmtsel {
140 MT6360_IINLMTSEL_AICR_3250 = 0,
141 MT6360_IINLMTSEL_CHG_TYPE,
142 MT6360_IINLMTSEL_AICR,
143 MT6360_IINLMTSEL_LOWER_LEVEL,
144};
145
146enum mt6360_pmu_chg_type {
147 MT6360_CHG_TYPE_NOVBUS = 0,
148 MT6360_CHG_TYPE_UNDER_GOING,
149 MT6360_CHG_TYPE_SDP,
150 MT6360_CHG_TYPE_SDPNSTD,
151 MT6360_CHG_TYPE_DCP,
152 MT6360_CHG_TYPE_CDP,
153 MT6360_CHG_TYPE_DISABLE_BC12,
154 MT6360_CHG_TYPE_MAX,
155};
156
157static enum power_supply_usb_type mt6360_charger_usb_types[] = {
158 POWER_SUPPLY_USB_TYPE_UNKNOWN,
159 POWER_SUPPLY_USB_TYPE_SDP,
160 POWER_SUPPLY_USB_TYPE_DCP,
161 POWER_SUPPLY_USB_TYPE_CDP,
162};
163
164static int mt6360_get_chrdet_ext_stat(struct mt6360_chg_info *mci,
165 bool *pwr_rdy)
166{
167 int ret;
168 unsigned int regval;
169
170 ret = regmap_read(map: mci->regmap, MT6360_PMU_FOD_STAT, val: &regval);
171 if (ret < 0)
172 return ret;
173 *pwr_rdy = (regval & MT6360_CHRDET_EXT_MASK) ? true : false;
174 return 0;
175}
176
177static int mt6360_charger_get_online(struct mt6360_chg_info *mci,
178 union power_supply_propval *val)
179{
180 int ret;
181 bool pwr_rdy;
182
183 ret = mt6360_get_chrdet_ext_stat(mci, pwr_rdy: &pwr_rdy);
184 if (ret < 0)
185 return ret;
186 val->intval = pwr_rdy ? true : false;
187 return 0;
188}
189
190static int mt6360_charger_get_status(struct mt6360_chg_info *mci,
191 union power_supply_propval *val)
192{
193 int status, ret;
194 unsigned int regval;
195 bool pwr_rdy;
196
197 ret = mt6360_get_chrdet_ext_stat(mci, pwr_rdy: &pwr_rdy);
198 if (ret < 0)
199 return ret;
200 if (!pwr_rdy) {
201 status = POWER_SUPPLY_STATUS_DISCHARGING;
202 goto out;
203 }
204
205 ret = regmap_read(map: mci->regmap, MT6360_PMU_CHG_STAT, val: &regval);
206 if (ret < 0)
207 return ret;
208 regval &= MT6360_CHG_STAT_MASK;
209 regval >>= MT6360_CHG_STAT_SHFT;
210 switch (regval) {
211 case 0x0:
212 status = POWER_SUPPLY_STATUS_NOT_CHARGING;
213 break;
214 case 0x1:
215 status = POWER_SUPPLY_STATUS_CHARGING;
216 break;
217 case 0x2:
218 status = POWER_SUPPLY_STATUS_FULL;
219 break;
220 default:
221 ret = -EIO;
222 }
223out:
224 if (!ret)
225 val->intval = status;
226 return ret;
227}
228
229static int mt6360_charger_get_charge_type(struct mt6360_chg_info *mci,
230 union power_supply_propval *val)
231{
232 int type, ret;
233 unsigned int regval;
234 u8 chg_stat;
235
236 ret = regmap_read(map: mci->regmap, MT6360_PMU_CHG_STAT, val: &regval);
237 if (ret < 0)
238 return ret;
239
240 chg_stat = (regval & MT6360_CHG_STAT_MASK) >> MT6360_CHG_STAT_SHFT;
241 switch (chg_stat) {
242 case 0x01: /* Charge in Progress */
243 if (regval & MT6360_VBAT_LVL_MASK)
244 type = POWER_SUPPLY_CHARGE_TYPE_FAST;
245 else
246 type = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
247 break;
248 case 0x00: /* Not Charging */
249 case 0x02: /* Charge Done */
250 case 0x03: /* Charge Fault */
251 default:
252 type = POWER_SUPPLY_CHARGE_TYPE_NONE;
253 break;
254 }
255
256 val->intval = type;
257 return 0;
258}
259
260static int mt6360_charger_get_ichg(struct mt6360_chg_info *mci,
261 union power_supply_propval *val)
262{
263 int ret;
264 u32 sel, value;
265
266 ret = regmap_read(map: mci->regmap, MT6360_PMU_CHG_CTRL7, val: &sel);
267 if (ret < 0)
268 return ret;
269 sel = (sel & MT6360_ICHG_MASK) >> MT6360_ICHG_SHFT;
270 ret = linear_range_get_value(r: &mt6360_chg_range[MT6360_RANGE_ICHG], selector: sel, val: &value);
271 if (!ret)
272 val->intval = value;
273 return ret;
274}
275
276static int mt6360_charger_get_max_ichg(struct mt6360_chg_info *mci,
277 union power_supply_propval *val)
278{
279 val->intval = MT6360_ICHG_MAX;
280 return 0;
281}
282
283static int mt6360_charger_get_cv(struct mt6360_chg_info *mci,
284 union power_supply_propval *val)
285{
286 int ret;
287 u32 sel, value;
288
289 ret = regmap_read(map: mci->regmap, MT6360_PMU_CHG_CTRL4, val: &sel);
290 if (ret < 0)
291 return ret;
292 sel = (sel & MT6360_VOREG_MASK) >> MT6360_VOREG_SHFT;
293 ret = linear_range_get_value(r: &mt6360_chg_range[MT6360_RANGE_VOREG], selector: sel, val: &value);
294 if (!ret)
295 val->intval = value;
296 return ret;
297}
298
299static int mt6360_charger_get_max_cv(struct mt6360_chg_info *mci,
300 union power_supply_propval *val)
301{
302 val->intval = MT6360_VOREG_MAX;
303 return 0;
304}
305
306static int mt6360_charger_get_aicr(struct mt6360_chg_info *mci,
307 union power_supply_propval *val)
308{
309 int ret;
310 u32 sel, value;
311
312 ret = regmap_read(map: mci->regmap, MT6360_PMU_CHG_CTRL3, val: &sel);
313 if (ret < 0)
314 return ret;
315 sel = (sel & MT6360_IAICR_MASK) >> MT6360_IAICR_SHFT;
316 ret = linear_range_get_value(r: &mt6360_chg_range[MT6360_RANGE_AICR], selector: sel, val: &value);
317 if (!ret)
318 val->intval = value;
319 return ret;
320}
321
322static int mt6360_charger_get_mivr(struct mt6360_chg_info *mci,
323 union power_supply_propval *val)
324{
325 int ret;
326 u32 sel, value;
327
328 ret = regmap_read(map: mci->regmap, MT6360_PMU_CHG_CTRL6, val: &sel);
329 if (ret < 0)
330 return ret;
331 sel = (sel & MT6360_VMIVR_MASK) >> MT6360_VMIVR_SHFT;
332 ret = linear_range_get_value(r: &mt6360_chg_range[MT6360_RANGE_VMIVR], selector: sel, val: &value);
333 if (!ret)
334 val->intval = value;
335 return ret;
336}
337
338static int mt6360_charger_get_iprechg(struct mt6360_chg_info *mci,
339 union power_supply_propval *val)
340{
341 int ret;
342 u32 sel, value;
343
344 ret = regmap_read(map: mci->regmap, MT6360_PMU_CHG_CTRL8, val: &sel);
345 if (ret < 0)
346 return ret;
347 sel = (sel & MT6360_IPREC_MASK) >> MT6360_IPREC_SHFT;
348 ret = linear_range_get_value(r: &mt6360_chg_range[MT6360_RANGE_IPREC], selector: sel, val: &value);
349 if (!ret)
350 val->intval = value;
351 return ret;
352}
353
354static int mt6360_charger_get_ieoc(struct mt6360_chg_info *mci,
355 union power_supply_propval *val)
356{
357 int ret;
358 u32 sel, value;
359
360 ret = regmap_read(map: mci->regmap, MT6360_PMU_CHG_CTRL9, val: &sel);
361 if (ret < 0)
362 return ret;
363 sel = (sel & MT6360_IEOC_MASK) >> MT6360_IEOC_SHFT;
364 ret = linear_range_get_value(r: &mt6360_chg_range[MT6360_RANGE_IEOC], selector: sel, val: &value);
365 if (!ret)
366 val->intval = value;
367 return ret;
368}
369
370static int mt6360_charger_set_online(struct mt6360_chg_info *mci,
371 const union power_supply_propval *val)
372{
373 u8 force_sleep = val->intval ? 0 : 1;
374
375 return regmap_update_bits(map: mci->regmap,
376 MT6360_PMU_CHG_CTRL1,
377 MT6360_FSLP_MASK,
378 val: force_sleep << MT6360_FSLP_SHFT);
379}
380
381static int mt6360_charger_set_ichg(struct mt6360_chg_info *mci,
382 const union power_supply_propval *val)
383{
384 u32 sel;
385
386 linear_range_get_selector_within(r: &mt6360_chg_range[MT6360_RANGE_ICHG], val: val->intval, selector: &sel);
387 return regmap_update_bits(map: mci->regmap,
388 MT6360_PMU_CHG_CTRL7,
389 MT6360_ICHG_MASK,
390 val: sel << MT6360_ICHG_SHFT);
391}
392
393static int mt6360_charger_set_cv(struct mt6360_chg_info *mci,
394 const union power_supply_propval *val)
395{
396 u32 sel;
397
398 linear_range_get_selector_within(r: &mt6360_chg_range[MT6360_RANGE_VOREG], val: val->intval, selector: &sel);
399 return regmap_update_bits(map: mci->regmap,
400 MT6360_PMU_CHG_CTRL4,
401 MT6360_VOREG_MASK,
402 val: sel << MT6360_VOREG_SHFT);
403}
404
405static int mt6360_charger_set_aicr(struct mt6360_chg_info *mci,
406 const union power_supply_propval *val)
407{
408 u32 sel;
409
410 linear_range_get_selector_within(r: &mt6360_chg_range[MT6360_RANGE_AICR], val: val->intval, selector: &sel);
411 return regmap_update_bits(map: mci->regmap,
412 MT6360_PMU_CHG_CTRL3,
413 MT6360_IAICR_MASK,
414 val: sel << MT6360_IAICR_SHFT);
415}
416
417static int mt6360_charger_set_mivr(struct mt6360_chg_info *mci,
418 const union power_supply_propval *val)
419{
420 u32 sel;
421
422 linear_range_get_selector_within(r: &mt6360_chg_range[MT6360_RANGE_VMIVR], val: val->intval, selector: &sel);
423 return regmap_update_bits(map: mci->regmap,
424 MT6360_PMU_CHG_CTRL3,
425 MT6360_VMIVR_MASK,
426 val: sel << MT6360_VMIVR_SHFT);
427}
428
429static int mt6360_charger_set_iprechg(struct mt6360_chg_info *mci,
430 const union power_supply_propval *val)
431{
432 u32 sel;
433
434 linear_range_get_selector_within(r: &mt6360_chg_range[MT6360_RANGE_IPREC], val: val->intval, selector: &sel);
435 return regmap_update_bits(map: mci->regmap,
436 MT6360_PMU_CHG_CTRL8,
437 MT6360_IPREC_MASK,
438 val: sel << MT6360_IPREC_SHFT);
439}
440
441static int mt6360_charger_set_ieoc(struct mt6360_chg_info *mci,
442 const union power_supply_propval *val)
443{
444 u32 sel;
445
446 linear_range_get_selector_within(r: &mt6360_chg_range[MT6360_RANGE_IEOC], val: val->intval, selector: &sel);
447 return regmap_update_bits(map: mci->regmap,
448 MT6360_PMU_CHG_CTRL9,
449 MT6360_IEOC_MASK,
450 val: sel << MT6360_IEOC_SHFT);
451}
452
453static int mt6360_charger_get_property(struct power_supply *psy,
454 enum power_supply_property psp,
455 union power_supply_propval *val)
456{
457 struct mt6360_chg_info *mci = power_supply_get_drvdata(psy);
458 int ret = 0;
459
460 switch (psp) {
461 case POWER_SUPPLY_PROP_ONLINE:
462 ret = mt6360_charger_get_online(mci, val);
463 break;
464 case POWER_SUPPLY_PROP_STATUS:
465 ret = mt6360_charger_get_status(mci, val);
466 break;
467 case POWER_SUPPLY_PROP_CHARGE_TYPE:
468 ret = mt6360_charger_get_charge_type(mci, val);
469 break;
470 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
471 ret = mt6360_charger_get_ichg(mci, val);
472 break;
473 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX:
474 ret = mt6360_charger_get_max_ichg(mci, val);
475 break;
476 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
477 ret = mt6360_charger_get_cv(mci, val);
478 break;
479 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX:
480 ret = mt6360_charger_get_max_cv(mci, val);
481 break;
482 case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
483 ret = mt6360_charger_get_aicr(mci, val);
484 break;
485 case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
486 ret = mt6360_charger_get_mivr(mci, val);
487 break;
488 case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
489 ret = mt6360_charger_get_iprechg(mci, val);
490 break;
491 case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
492 ret = mt6360_charger_get_ieoc(mci, val);
493 break;
494 case POWER_SUPPLY_PROP_USB_TYPE:
495 val->intval = mci->psy_usb_type;
496 break;
497 default:
498 ret = -ENODATA;
499 }
500 return ret;
501}
502
503static int mt6360_charger_set_property(struct power_supply *psy,
504 enum power_supply_property psp,
505 const union power_supply_propval *val)
506{
507 struct mt6360_chg_info *mci = power_supply_get_drvdata(psy);
508 int ret;
509
510 switch (psp) {
511 case POWER_SUPPLY_PROP_ONLINE:
512 ret = mt6360_charger_set_online(mci, val);
513 break;
514 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
515 ret = mt6360_charger_set_ichg(mci, val);
516 break;
517 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
518 ret = mt6360_charger_set_cv(mci, val);
519 break;
520 case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
521 ret = mt6360_charger_set_aicr(mci, val);
522 break;
523 case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
524 ret = mt6360_charger_set_mivr(mci, val);
525 break;
526 case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
527 ret = mt6360_charger_set_iprechg(mci, val);
528 break;
529 case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
530 ret = mt6360_charger_set_ieoc(mci, val);
531 break;
532 default:
533 ret = -EINVAL;
534 }
535 return ret;
536}
537
538static int mt6360_charger_property_is_writeable(struct power_supply *psy,
539 enum power_supply_property psp)
540{
541 switch (psp) {
542 case POWER_SUPPLY_PROP_ONLINE:
543 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
544 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
545 case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
546 case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
547 case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
548 case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
549 return 1;
550 default:
551 return 0;
552 }
553}
554
555static enum power_supply_property mt6360_charger_properties[] = {
556 POWER_SUPPLY_PROP_ONLINE,
557 POWER_SUPPLY_PROP_STATUS,
558 POWER_SUPPLY_PROP_CHARGE_TYPE,
559 POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT,
560 POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX,
561 POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
562 POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX,
563 POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
564 POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT,
565 POWER_SUPPLY_PROP_PRECHARGE_CURRENT,
566 POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT,
567 POWER_SUPPLY_PROP_USB_TYPE,
568};
569
570static const struct power_supply_desc mt6360_charger_desc = {
571 .type = POWER_SUPPLY_TYPE_USB,
572 .properties = mt6360_charger_properties,
573 .num_properties = ARRAY_SIZE(mt6360_charger_properties),
574 .get_property = mt6360_charger_get_property,
575 .set_property = mt6360_charger_set_property,
576 .property_is_writeable = mt6360_charger_property_is_writeable,
577 .usb_types = mt6360_charger_usb_types,
578 .num_usb_types = ARRAY_SIZE(mt6360_charger_usb_types),
579};
580
581static const struct regulator_ops mt6360_chg_otg_ops = {
582 .list_voltage = regulator_list_voltage_linear,
583 .enable = regulator_enable_regmap,
584 .disable = regulator_disable_regmap,
585 .is_enabled = regulator_is_enabled_regmap,
586 .set_voltage_sel = regulator_set_voltage_sel_regmap,
587 .get_voltage_sel = regulator_get_voltage_sel_regmap,
588};
589
590static const struct regulator_desc mt6360_otg_rdesc = {
591 .of_match = "usb-otg-vbus",
592 .name = "usb-otg-vbus",
593 .ops = &mt6360_chg_otg_ops,
594 .owner = THIS_MODULE,
595 .type = REGULATOR_VOLTAGE,
596 .min_uV = 4425000,
597 .uV_step = 25000,
598 .n_voltages = 57,
599 .vsel_reg = MT6360_PMU_CHG_CTRL5,
600 .vsel_mask = MT6360_VOBST_MASK,
601 .enable_reg = MT6360_PMU_CHG_CTRL1,
602 .enable_mask = MT6360_OPA_MODE_MASK,
603};
604
605static irqreturn_t mt6360_pmu_attach_i_handler(int irq, void *data)
606{
607 struct mt6360_chg_info *mci = data;
608 int ret;
609 unsigned int usb_status;
610 int last_usb_type;
611
612 mutex_lock(&mci->chgdet_lock);
613 if (!mci->bc12_en) {
614 dev_warn(mci->dev, "Received attach interrupt, bc12 disabled, ignore irq\n");
615 goto out;
616 }
617 last_usb_type = mci->psy_usb_type;
618 /* Plug in */
619 ret = regmap_read(map: mci->regmap, MT6360_PMU_USB_STATUS1, val: &usb_status);
620 if (ret < 0)
621 goto out;
622 usb_status &= MT6360_USB_STATUS_MASK;
623 usb_status >>= MT6360_USB_STATUS_SHFT;
624 switch (usb_status) {
625 case MT6360_CHG_TYPE_NOVBUS:
626 dev_dbg(mci->dev, "Received attach interrupt, no vbus\n");
627 goto out;
628 case MT6360_CHG_TYPE_UNDER_GOING:
629 dev_dbg(mci->dev, "Received attach interrupt, under going...\n");
630 goto out;
631 case MT6360_CHG_TYPE_SDP:
632 mci->psy_usb_type = POWER_SUPPLY_USB_TYPE_SDP;
633 break;
634 case MT6360_CHG_TYPE_SDPNSTD:
635 mci->psy_usb_type = POWER_SUPPLY_USB_TYPE_SDP;
636 break;
637 case MT6360_CHG_TYPE_CDP:
638 mci->psy_usb_type = POWER_SUPPLY_USB_TYPE_CDP;
639 break;
640 case MT6360_CHG_TYPE_DCP:
641 mci->psy_usb_type = POWER_SUPPLY_USB_TYPE_DCP;
642 break;
643 case MT6360_CHG_TYPE_DISABLE_BC12:
644 dev_dbg(mci->dev, "Received attach interrupt, bc12 detect not enable\n");
645 goto out;
646 default:
647 mci->psy_usb_type = POWER_SUPPLY_USB_TYPE_UNKNOWN;
648 dev_dbg(mci->dev, "Received attach interrupt, reserved address\n");
649 goto out;
650 }
651
652 dev_dbg(mci->dev, "Received attach interrupt, chg_type = %d\n", mci->psy_usb_type);
653 if (last_usb_type != mci->psy_usb_type)
654 power_supply_changed(psy: mci->psy);
655out:
656 mutex_unlock(lock: &mci->chgdet_lock);
657 return IRQ_HANDLED;
658}
659
660static void mt6360_handle_chrdet_ext_evt(struct mt6360_chg_info *mci)
661{
662 int ret;
663 bool pwr_rdy;
664
665 mutex_lock(&mci->chgdet_lock);
666 ret = mt6360_get_chrdet_ext_stat(mci, pwr_rdy: &pwr_rdy);
667 if (ret < 0)
668 goto out;
669 if (mci->pwr_rdy == pwr_rdy) {
670 dev_dbg(mci->dev, "Received vbus interrupt, pwr_rdy is same(%d)\n", pwr_rdy);
671 goto out;
672 }
673 mci->pwr_rdy = pwr_rdy;
674 dev_dbg(mci->dev, "Received vbus interrupt, pwr_rdy = %d\n", pwr_rdy);
675 if (!pwr_rdy) {
676 mci->psy_usb_type = POWER_SUPPLY_USB_TYPE_UNKNOWN;
677 power_supply_changed(psy: mci->psy);
678
679 }
680 ret = regmap_update_bits(map: mci->regmap,
681 MT6360_PMU_DEVICE_TYPE,
682 MT6360_USBCHGEN_MASK,
683 val: pwr_rdy ? MT6360_USBCHGEN_MASK : 0);
684 if (ret < 0)
685 goto out;
686 mci->bc12_en = pwr_rdy;
687out:
688 mutex_unlock(lock: &mci->chgdet_lock);
689}
690
691static void mt6360_chrdet_work(struct work_struct *work)
692{
693 struct mt6360_chg_info *mci = (struct mt6360_chg_info *)container_of(
694 work, struct mt6360_chg_info, chrdet_work);
695
696 mt6360_handle_chrdet_ext_evt(mci);
697}
698
699static irqreturn_t mt6360_pmu_chrdet_ext_evt_handler(int irq, void *data)
700{
701 struct mt6360_chg_info *mci = data;
702
703 mt6360_handle_chrdet_ext_evt(mci);
704 return IRQ_HANDLED;
705}
706
707static int mt6360_chg_irq_register(struct platform_device *pdev)
708{
709 const struct {
710 const char *name;
711 irq_handler_t handler;
712 } irq_descs[] = {
713 { "attach_i", mt6360_pmu_attach_i_handler },
714 { "chrdet_ext_evt", mt6360_pmu_chrdet_ext_evt_handler }
715 };
716 int i, ret;
717
718 for (i = 0; i < ARRAY_SIZE(irq_descs); i++) {
719 ret = platform_get_irq_byname(pdev, irq_descs[i].name);
720 if (ret < 0)
721 return ret;
722
723 ret = devm_request_threaded_irq(dev: &pdev->dev, irq: ret, NULL,
724 thread_fn: irq_descs[i].handler,
725 IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
726 devname: irq_descs[i].name,
727 dev_id: platform_get_drvdata(pdev));
728 if (ret < 0)
729 return dev_err_probe(dev: &pdev->dev, err: ret, fmt: "Failed to request %s irq\n",
730 irq_descs[i].name);
731 }
732
733 return 0;
734}
735
736static u32 mt6360_vinovp_trans_to_sel(u32 val)
737{
738 u32 vinovp_tbl[] = { 5500000, 6500000, 11000000, 14500000 };
739 int i;
740
741 /* Select the smaller and equal supported value */
742 for (i = 0; i < ARRAY_SIZE(vinovp_tbl)-1; i++) {
743 if (val < vinovp_tbl[i+1])
744 break;
745 }
746 return i;
747}
748
749static int mt6360_chg_init_setting(struct mt6360_chg_info *mci)
750{
751 int ret;
752 u32 sel;
753
754 sel = mt6360_vinovp_trans_to_sel(val: mci->vinovp);
755 ret = regmap_update_bits(map: mci->regmap, MT6360_PMU_CHG_CTRL19,
756 MT6360_VINOVP_MASK, val: sel << MT6360_VINOVP_SHFT);
757 if (ret)
758 return dev_err_probe(dev: mci->dev, err: ret, fmt: "%s: Failed to apply vinovp\n", __func__);
759 ret = regmap_update_bits(map: mci->regmap, MT6360_PMU_DEVICE_TYPE,
760 MT6360_USBCHGEN_MASK, val: 0);
761 if (ret)
762 return dev_err_probe(dev: mci->dev, err: ret, fmt: "%s: Failed to disable bc12\n", __func__);
763 ret = regmap_update_bits(map: mci->regmap, MT6360_PMU_CHG_CTRL2,
764 MT6360_IINLMTSEL_MASK,
765 val: MT6360_IINLMTSEL_AICR <<
766 MT6360_IINLMTSEL_SHFT);
767 if (ret)
768 return dev_err_probe(dev: mci->dev, err: ret,
769 fmt: "%s: Failed to switch iinlmtsel to aicr\n", __func__);
770 usleep_range(min: 5000, max: 6000);
771 ret = regmap_update_bits(map: mci->regmap, MT6360_PMU_CHG_CTRL3,
772 MT6360_ILIM_EN_MASK, val: 0);
773 if (ret)
774 return dev_err_probe(dev: mci->dev, err: ret,
775 fmt: "%s: Failed to disable ilim\n", __func__);
776 ret = regmap_update_bits(map: mci->regmap, MT6360_PMU_CHG_CTRL10,
777 MT6360_OTG_OC_MASK, MT6360_OTG_OC_MASK);
778 if (ret)
779 return dev_err_probe(dev: mci->dev, err: ret,
780 fmt: "%s: Failed to config otg oc to 3A\n", __func__);
781 return 0;
782}
783
784static int mt6360_charger_probe(struct platform_device *pdev)
785{
786 struct mt6360_chg_info *mci;
787 struct power_supply_config charger_cfg = {};
788 struct regulator_config config = { };
789 int ret;
790
791 mci = devm_kzalloc(dev: &pdev->dev, size: sizeof(*mci), GFP_KERNEL);
792 if (!mci)
793 return -ENOMEM;
794
795 mci->dev = &pdev->dev;
796 mci->vinovp = 6500000;
797 mutex_init(&mci->chgdet_lock);
798 platform_set_drvdata(pdev, data: mci);
799 ret = devm_work_autocancel(dev: &pdev->dev, w: &mci->chrdet_work, worker: mt6360_chrdet_work);
800 if (ret)
801 return dev_err_probe(dev: &pdev->dev, err: ret, fmt: "Failed to set delayed work\n");
802
803 ret = device_property_read_u32(dev: &pdev->dev, propname: "richtek,vinovp-microvolt", val: &mci->vinovp);
804 if (ret)
805 dev_warn(&pdev->dev, "Failed to parse vinovp in DT, keep default 6.5v\n");
806
807 mci->regmap = dev_get_regmap(dev: pdev->dev.parent, NULL);
808 if (!mci->regmap)
809 return dev_err_probe(dev: &pdev->dev, err: -ENODEV, fmt: "Failed to get parent regmap\n");
810
811 ret = mt6360_chg_init_setting(mci);
812 if (ret)
813 return dev_err_probe(dev: &pdev->dev, err: ret, fmt: "Failed to initial setting\n");
814
815 memcpy(&mci->psy_desc, &mt6360_charger_desc, sizeof(mci->psy_desc));
816 mci->psy_desc.name = dev_name(dev: &pdev->dev);
817 charger_cfg.drv_data = mci;
818 charger_cfg.of_node = pdev->dev.of_node;
819 mci->psy = devm_power_supply_register(parent: &pdev->dev,
820 desc: &mci->psy_desc, cfg: &charger_cfg);
821 if (IS_ERR(ptr: mci->psy))
822 return dev_err_probe(dev: &pdev->dev, err: PTR_ERR(ptr: mci->psy),
823 fmt: "Failed to register power supply dev\n");
824
825
826 ret = mt6360_chg_irq_register(pdev);
827 if (ret)
828 return dev_err_probe(dev: &pdev->dev, err: ret, fmt: "Failed to register irqs\n");
829
830 config.dev = &pdev->dev;
831 config.regmap = mci->regmap;
832 mci->otg_rdev = devm_regulator_register(dev: &pdev->dev, regulator_desc: &mt6360_otg_rdesc,
833 config: &config);
834 if (IS_ERR(ptr: mci->otg_rdev))
835 return PTR_ERR(ptr: mci->otg_rdev);
836
837 schedule_work(work: &mci->chrdet_work);
838
839 return 0;
840}
841
842static const struct of_device_id __maybe_unused mt6360_charger_of_id[] = {
843 { .compatible = "mediatek,mt6360-chg", },
844 {},
845};
846MODULE_DEVICE_TABLE(of, mt6360_charger_of_id);
847
848static const struct platform_device_id mt6360_charger_id[] = {
849 { "mt6360-chg", 0 },
850 {},
851};
852MODULE_DEVICE_TABLE(platform, mt6360_charger_id);
853
854static struct platform_driver mt6360_charger_driver = {
855 .driver = {
856 .name = "mt6360-chg",
857 .of_match_table = of_match_ptr(mt6360_charger_of_id),
858 },
859 .probe = mt6360_charger_probe,
860 .id_table = mt6360_charger_id,
861};
862module_platform_driver(mt6360_charger_driver);
863
864MODULE_AUTHOR("Gene Chen <gene_chen@richtek.com>");
865MODULE_DESCRIPTION("MT6360 Charger Driver");
866MODULE_LICENSE("GPL");
867

source code of linux/drivers/power/supply/mt6360_charger.c