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
106 enum {
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
116 static 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
125 struct 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
139 enum mt6360_iinlmtsel {
140 MT6360_IINLMTSEL_AICR_3250 = 0,
141 MT6360_IINLMTSEL_CHG_TYPE,
142 MT6360_IINLMTSEL_AICR,
143 MT6360_IINLMTSEL_LOWER_LEVEL,
144 };
145
146 enum 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
157 static 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
mt6360_get_chrdet_ext_stat(struct mt6360_chg_info * mci,bool * pwr_rdy)164 static 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(mci->regmap, MT6360_PMU_FOD_STAT, ®val);
171 if (ret < 0)
172 return ret;
173 *pwr_rdy = (regval & MT6360_CHRDET_EXT_MASK) ? true : false;
174 return 0;
175 }
176
mt6360_charger_get_online(struct mt6360_chg_info * mci,union power_supply_propval * val)177 static 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);
184 if (ret < 0)
185 return ret;
186 val->intval = pwr_rdy ? true : false;
187 return 0;
188 }
189
mt6360_charger_get_status(struct mt6360_chg_info * mci,union power_supply_propval * val)190 static 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);
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(mci->regmap, MT6360_PMU_CHG_STAT, ®val);
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 }
223 out:
224 if (!ret)
225 val->intval = status;
226 return ret;
227 }
228
mt6360_charger_get_charge_type(struct mt6360_chg_info * mci,union power_supply_propval * val)229 static 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(mci->regmap, MT6360_PMU_CHG_STAT, ®val);
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
mt6360_charger_get_ichg(struct mt6360_chg_info * mci,union power_supply_propval * val)260 static 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(mci->regmap, MT6360_PMU_CHG_CTRL7, &sel);
267 if (ret < 0)
268 return ret;
269 sel = (sel & MT6360_ICHG_MASK) >> MT6360_ICHG_SHFT;
270 ret = linear_range_get_value(&mt6360_chg_range[MT6360_RANGE_ICHG], sel, &value);
271 if (!ret)
272 val->intval = value;
273 return ret;
274 }
275
mt6360_charger_get_max_ichg(struct mt6360_chg_info * mci,union power_supply_propval * val)276 static 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
mt6360_charger_get_cv(struct mt6360_chg_info * mci,union power_supply_propval * val)283 static 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(mci->regmap, MT6360_PMU_CHG_CTRL4, &sel);
290 if (ret < 0)
291 return ret;
292 sel = (sel & MT6360_VOREG_MASK) >> MT6360_VOREG_SHFT;
293 ret = linear_range_get_value(&mt6360_chg_range[MT6360_RANGE_VOREG], sel, &value);
294 if (!ret)
295 val->intval = value;
296 return ret;
297 }
298
mt6360_charger_get_max_cv(struct mt6360_chg_info * mci,union power_supply_propval * val)299 static 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
mt6360_charger_get_aicr(struct mt6360_chg_info * mci,union power_supply_propval * val)306 static 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(mci->regmap, MT6360_PMU_CHG_CTRL3, &sel);
313 if (ret < 0)
314 return ret;
315 sel = (sel & MT6360_IAICR_MASK) >> MT6360_IAICR_SHFT;
316 ret = linear_range_get_value(&mt6360_chg_range[MT6360_RANGE_AICR], sel, &value);
317 if (!ret)
318 val->intval = value;
319 return ret;
320 }
321
mt6360_charger_get_mivr(struct mt6360_chg_info * mci,union power_supply_propval * val)322 static 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(mci->regmap, MT6360_PMU_CHG_CTRL6, &sel);
329 if (ret < 0)
330 return ret;
331 sel = (sel & MT6360_VMIVR_MASK) >> MT6360_VMIVR_SHFT;
332 ret = linear_range_get_value(&mt6360_chg_range[MT6360_RANGE_VMIVR], sel, &value);
333 if (!ret)
334 val->intval = value;
335 return ret;
336 }
337
mt6360_charger_get_iprechg(struct mt6360_chg_info * mci,union power_supply_propval * val)338 static 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(mci->regmap, MT6360_PMU_CHG_CTRL8, &sel);
345 if (ret < 0)
346 return ret;
347 sel = (sel & MT6360_IPREC_MASK) >> MT6360_IPREC_SHFT;
348 ret = linear_range_get_value(&mt6360_chg_range[MT6360_RANGE_IPREC], sel, &value);
349 if (!ret)
350 val->intval = value;
351 return ret;
352 }
353
mt6360_charger_get_ieoc(struct mt6360_chg_info * mci,union power_supply_propval * val)354 static 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(mci->regmap, MT6360_PMU_CHG_CTRL9, &sel);
361 if (ret < 0)
362 return ret;
363 sel = (sel & MT6360_IEOC_MASK) >> MT6360_IEOC_SHFT;
364 ret = linear_range_get_value(&mt6360_chg_range[MT6360_RANGE_IEOC], sel, &value);
365 if (!ret)
366 val->intval = value;
367 return ret;
368 }
369
mt6360_charger_set_online(struct mt6360_chg_info * mci,const union power_supply_propval * val)370 static 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(mci->regmap,
376 MT6360_PMU_CHG_CTRL1,
377 MT6360_FSLP_MASK,
378 force_sleep << MT6360_FSLP_SHFT);
379 }
380
mt6360_charger_set_ichg(struct mt6360_chg_info * mci,const union power_supply_propval * val)381 static 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(&mt6360_chg_range[MT6360_RANGE_ICHG], val->intval, &sel);
387 return regmap_update_bits(mci->regmap,
388 MT6360_PMU_CHG_CTRL7,
389 MT6360_ICHG_MASK,
390 sel << MT6360_ICHG_SHFT);
391 }
392
mt6360_charger_set_cv(struct mt6360_chg_info * mci,const union power_supply_propval * val)393 static 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(&mt6360_chg_range[MT6360_RANGE_VOREG], val->intval, &sel);
399 return regmap_update_bits(mci->regmap,
400 MT6360_PMU_CHG_CTRL4,
401 MT6360_VOREG_MASK,
402 sel << MT6360_VOREG_SHFT);
403 }
404
mt6360_charger_set_aicr(struct mt6360_chg_info * mci,const union power_supply_propval * val)405 static 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(&mt6360_chg_range[MT6360_RANGE_AICR], val->intval, &sel);
411 return regmap_update_bits(mci->regmap,
412 MT6360_PMU_CHG_CTRL3,
413 MT6360_IAICR_MASK,
414 sel << MT6360_IAICR_SHFT);
415 }
416
mt6360_charger_set_mivr(struct mt6360_chg_info * mci,const union power_supply_propval * val)417 static 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(&mt6360_chg_range[MT6360_RANGE_VMIVR], val->intval, &sel);
423 return regmap_update_bits(mci->regmap,
424 MT6360_PMU_CHG_CTRL3,
425 MT6360_VMIVR_MASK,
426 sel << MT6360_VMIVR_SHFT);
427 }
428
mt6360_charger_set_iprechg(struct mt6360_chg_info * mci,const union power_supply_propval * val)429 static 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(&mt6360_chg_range[MT6360_RANGE_IPREC], val->intval, &sel);
435 return regmap_update_bits(mci->regmap,
436 MT6360_PMU_CHG_CTRL8,
437 MT6360_IPREC_MASK,
438 sel << MT6360_IPREC_SHFT);
439 }
440
mt6360_charger_set_ieoc(struct mt6360_chg_info * mci,const union power_supply_propval * val)441 static 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(&mt6360_chg_range[MT6360_RANGE_IEOC], val->intval, &sel);
447 return regmap_update_bits(mci->regmap,
448 MT6360_PMU_CHG_CTRL9,
449 MT6360_IEOC_MASK,
450 sel << MT6360_IEOC_SHFT);
451 }
452
mt6360_charger_get_property(struct power_supply * psy,enum power_supply_property psp,union power_supply_propval * val)453 static 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
mt6360_charger_set_property(struct power_supply * psy,enum power_supply_property psp,const union power_supply_propval * val)503 static 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
mt6360_charger_property_is_writeable(struct power_supply * psy,enum power_supply_property psp)538 static 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
555 static 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
570 static 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
581 static 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
590 static const struct regulator_desc mt6360_otg_rdesc = {
591 .of_match = "usb-otg-vbus-regulator",
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
mt6360_pmu_attach_i_handler(int irq,void * data)605 static 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(mci->regmap, MT6360_PMU_USB_STATUS1, &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(mci->psy);
655 out:
656 mutex_unlock(&mci->chgdet_lock);
657 return IRQ_HANDLED;
658 }
659
mt6360_handle_chrdet_ext_evt(struct mt6360_chg_info * mci)660 static 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);
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(mci->psy);
678
679 }
680 ret = regmap_update_bits(mci->regmap,
681 MT6360_PMU_DEVICE_TYPE,
682 MT6360_USBCHGEN_MASK,
683 pwr_rdy ? MT6360_USBCHGEN_MASK : 0);
684 if (ret < 0)
685 goto out;
686 mci->bc12_en = pwr_rdy;
687 out:
688 mutex_unlock(&mci->chgdet_lock);
689 }
690
mt6360_chrdet_work(struct work_struct * work)691 static 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
mt6360_pmu_chrdet_ext_evt_handler(int irq,void * data)699 static 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
mt6360_chg_irq_register(struct platform_device * pdev)707 static 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(&pdev->dev, ret, NULL,
724 irq_descs[i].handler,
725 IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
726 irq_descs[i].name,
727 platform_get_drvdata(pdev));
728 if (ret < 0)
729 return dev_err_probe(&pdev->dev, ret, "Failed to request %s irq\n",
730 irq_descs[i].name);
731 }
732
733 return 0;
734 }
735
mt6360_vinovp_trans_to_sel(u32 val)736 static 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
mt6360_chg_init_setting(struct mt6360_chg_info * mci)749 static 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(mci->vinovp);
755 ret = regmap_update_bits(mci->regmap, MT6360_PMU_CHG_CTRL19,
756 MT6360_VINOVP_MASK, sel << MT6360_VINOVP_SHFT);
757 if (ret)
758 return dev_err_probe(mci->dev, ret, "%s: Failed to apply vinovp\n", __func__);
759 ret = regmap_update_bits(mci->regmap, MT6360_PMU_DEVICE_TYPE,
760 MT6360_USBCHGEN_MASK, 0);
761 if (ret)
762 return dev_err_probe(mci->dev, ret, "%s: Failed to disable bc12\n", __func__);
763 ret = regmap_update_bits(mci->regmap, MT6360_PMU_CHG_CTRL2,
764 MT6360_IINLMTSEL_MASK,
765 MT6360_IINLMTSEL_AICR <<
766 MT6360_IINLMTSEL_SHFT);
767 if (ret)
768 return dev_err_probe(mci->dev, ret,
769 "%s: Failed to switch iinlmtsel to aicr\n", __func__);
770 usleep_range(5000, 6000);
771 ret = regmap_update_bits(mci->regmap, MT6360_PMU_CHG_CTRL3,
772 MT6360_ILIM_EN_MASK, 0);
773 if (ret)
774 return dev_err_probe(mci->dev, ret,
775 "%s: Failed to disable ilim\n", __func__);
776 ret = regmap_update_bits(mci->regmap, MT6360_PMU_CHG_CTRL10,
777 MT6360_OTG_OC_MASK, MT6360_OTG_OC_MASK);
778 if (ret)
779 return dev_err_probe(mci->dev, ret,
780 "%s: Failed to config otg oc to 3A\n", __func__);
781 return 0;
782 }
783
mt6360_charger_probe(struct platform_device * pdev)784 static 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(&pdev->dev, 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, mci);
799 ret = devm_work_autocancel(&pdev->dev, &mci->chrdet_work, mt6360_chrdet_work);
800 if (ret)
801 return dev_err_probe(&pdev->dev, ret, "Failed to set delayed work\n");
802
803 ret = device_property_read_u32(&pdev->dev, "richtek,vinovp-microvolt", &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(pdev->dev.parent, NULL);
808 if (!mci->regmap)
809 return dev_err_probe(&pdev->dev, -ENODEV, "Failed to get parent regmap\n");
810
811 ret = mt6360_chg_init_setting(mci);
812 if (ret)
813 return dev_err_probe(&pdev->dev, ret, "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(&pdev->dev);
817 charger_cfg.drv_data = mci;
818 charger_cfg.of_node = pdev->dev.of_node;
819 mci->psy = devm_power_supply_register(&pdev->dev,
820 &mci->psy_desc, &charger_cfg);
821 if (IS_ERR(mci->psy))
822 return dev_err_probe(&pdev->dev, PTR_ERR(mci->psy),
823 "Failed to register power supply dev\n");
824
825
826 ret = mt6360_chg_irq_register(pdev);
827 if (ret)
828 return dev_err_probe(&pdev->dev, ret, "Failed to register irqs\n");
829
830 config.dev = &pdev->dev;
831 config.regmap = mci->regmap;
832 mci->otg_rdev = devm_regulator_register(&pdev->dev, &mt6360_otg_rdesc,
833 &config);
834 if (IS_ERR(mci->otg_rdev))
835 return PTR_ERR(mci->otg_rdev);
836
837 schedule_work(&mci->chrdet_work);
838
839 return 0;
840 }
841
842 static const struct of_device_id __maybe_unused mt6360_charger_of_id[] = {
843 { .compatible = "mediatek,mt6360-chg", },
844 {},
845 };
846 MODULE_DEVICE_TABLE(of, mt6360_charger_of_id);
847
848 static const struct platform_device_id mt6360_charger_id[] = {
849 { "mt6360-chg", 0 },
850 {},
851 };
852 MODULE_DEVICE_TABLE(platform, mt6360_charger_id);
853
854 static 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 };
862 module_platform_driver(mt6360_charger_driver);
863
864 MODULE_AUTHOR("Gene Chen <gene_chen@richtek.com>");
865 MODULE_DESCRIPTION("MT6360 Charger Driver");
866 MODULE_LICENSE("GPL");
867