1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Based on max77650-charger.c
4 *
5 * Copyright (C) 2025 Dzmitry Sankouski <dsankouski@gmail.org>
6 *
7 * Battery charger driver for MAXIM 77705 charger/power-supply.
8 */
9
10 #include <linux/devm-helpers.h>
11 #include <linux/i2c.h>
12 #include <linux/interrupt.h>
13 #include <linux/mfd/max77693-common.h>
14 #include <linux/mfd/max77705-private.h>
15 #include <linux/power/max77705_charger.h>
16 #include <linux/module.h>
17 #include <linux/platform_device.h>
18 #include <linux/power_supply.h>
19 #include <linux/regmap.h>
20
21 static const char *max77705_charger_model = "max77705";
22 static const char *max77705_charger_manufacturer = "Maxim Integrated";
23
24 static const struct regmap_config max77705_chg_regmap_config = {
25 .reg_base = MAX77705_CHG_REG_BASE,
26 .reg_bits = 8,
27 .val_bits = 8,
28 .max_register = MAX77705_CHG_REG_SAFEOUT_CTRL,
29 };
30
31 static enum power_supply_property max77705_charger_props[] = {
32 POWER_SUPPLY_PROP_ONLINE,
33 POWER_SUPPLY_PROP_PRESENT,
34 POWER_SUPPLY_PROP_STATUS,
35 POWER_SUPPLY_PROP_CHARGE_TYPE,
36 POWER_SUPPLY_PROP_HEALTH,
37 POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
38 POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
39 POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT,
40 POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
41 };
42
max77705_chgin_irq(void * irq_drv_data)43 static int max77705_chgin_irq(void *irq_drv_data)
44 {
45 struct max77705_charger_data *charger = irq_drv_data;
46
47 queue_work(charger->wqueue, &charger->chgin_work);
48
49 return 0;
50 }
51
52 static const struct regmap_irq max77705_charger_irqs[] = {
53 { .mask = MAX77705_BYP_IM, },
54 { .mask = MAX77705_INP_LIMIT_IM, },
55 { .mask = MAX77705_BATP_IM, },
56 { .mask = MAX77705_BAT_IM, },
57 { .mask = MAX77705_CHG_IM, },
58 { .mask = MAX77705_WCIN_IM, },
59 { .mask = MAX77705_CHGIN_IM, },
60 { .mask = MAX77705_AICL_IM, },
61 };
62
63 static struct regmap_irq_chip max77705_charger_irq_chip = {
64 .name = "max77705-charger",
65 .status_base = MAX77705_CHG_REG_INT,
66 .mask_base = MAX77705_CHG_REG_INT_MASK,
67 .handle_post_irq = max77705_chgin_irq,
68 .num_regs = 1,
69 .irqs = max77705_charger_irqs,
70 .num_irqs = ARRAY_SIZE(max77705_charger_irqs),
71 };
72
max77705_charger_enable(struct max77705_charger_data * chg)73 static int max77705_charger_enable(struct max77705_charger_data *chg)
74 {
75 int rv;
76
77 rv = regmap_update_bits(chg->regmap, MAX77705_CHG_REG_CNFG_09,
78 MAX77705_CHG_EN_MASK, MAX77705_CHG_EN_MASK);
79 if (rv)
80 dev_err(chg->dev, "unable to enable the charger: %d\n", rv);
81
82 return rv;
83 }
84
max77705_charger_disable(void * data)85 static void max77705_charger_disable(void *data)
86 {
87 struct max77705_charger_data *chg = data;
88 int rv;
89
90 rv = regmap_update_bits(chg->regmap,
91 MAX77705_CHG_REG_CNFG_09,
92 MAX77705_CHG_EN_MASK,
93 MAX77705_CHG_DISABLE);
94 if (rv)
95 dev_err(chg->dev, "unable to disable the charger: %d\n", rv);
96 }
97
max77705_get_online(struct regmap * regmap,int * val)98 static int max77705_get_online(struct regmap *regmap, int *val)
99 {
100 unsigned int data;
101 int ret;
102
103 ret = regmap_read(regmap, MAX77705_CHG_REG_INT_OK, &data);
104 if (ret < 0)
105 return ret;
106
107 *val = !!(data & MAX77705_CHGIN_OK);
108
109 return 0;
110 }
111
max77705_check_battery(struct max77705_charger_data * charger,int * val)112 static int max77705_check_battery(struct max77705_charger_data *charger, int *val)
113 {
114 unsigned int reg_data;
115 unsigned int reg_data2;
116 struct regmap *regmap = charger->regmap;
117
118 regmap_read(regmap, MAX77705_CHG_REG_INT_OK, ®_data);
119
120 dev_dbg(charger->dev, "CHG_INT_OK(0x%x)\n", reg_data);
121
122 regmap_read(regmap, MAX77705_CHG_REG_DETAILS_00, ®_data2);
123
124 dev_dbg(charger->dev, "CHG_DETAILS00(0x%x)\n", reg_data2);
125
126 if ((reg_data & MAX77705_BATP_OK) || !(reg_data2 & MAX77705_BATP_DTLS))
127 *val = true;
128 else
129 *val = false;
130
131 return 0;
132 }
133
max77705_get_charge_type(struct max77705_charger_data * charger,int * val)134 static int max77705_get_charge_type(struct max77705_charger_data *charger, int *val)
135 {
136 struct regmap *regmap = charger->regmap;
137 unsigned int reg_data;
138
139 regmap_read(regmap, MAX77705_CHG_REG_CNFG_09, ®_data);
140 if (!MAX77705_CHARGER_CHG_CHARGING(reg_data)) {
141 *val = POWER_SUPPLY_CHARGE_TYPE_NONE;
142 return 0;
143 }
144
145 regmap_read(regmap, MAX77705_CHG_REG_DETAILS_01, ®_data);
146 reg_data &= MAX77705_CHG_DTLS;
147
148 switch (reg_data) {
149 case 0x0:
150 case MAX77705_CHARGER_CONSTANT_CURRENT:
151 case MAX77705_CHARGER_CONSTANT_VOLTAGE:
152 *val = POWER_SUPPLY_CHARGE_TYPE_FAST;
153 return 0;
154 default:
155 *val = POWER_SUPPLY_CHARGE_TYPE_NONE;
156 return 0;
157 }
158
159 return 0;
160 }
161
max77705_get_status(struct max77705_charger_data * charger,int * val)162 static int max77705_get_status(struct max77705_charger_data *charger, int *val)
163 {
164 struct regmap *regmap = charger->regmap;
165 unsigned int reg_data;
166
167 regmap_read(regmap, MAX77705_CHG_REG_CNFG_09, ®_data);
168 if (!MAX77705_CHARGER_CHG_CHARGING(reg_data)) {
169 *val = POWER_SUPPLY_CHARGE_TYPE_NONE;
170 return 0;
171 }
172
173 regmap_read(regmap, MAX77705_CHG_REG_DETAILS_01, ®_data);
174 reg_data &= MAX77705_CHG_DTLS;
175
176 switch (reg_data) {
177 case 0x0:
178 case MAX77705_CHARGER_CONSTANT_CURRENT:
179 case MAX77705_CHARGER_CONSTANT_VOLTAGE:
180 *val = POWER_SUPPLY_STATUS_CHARGING;
181 return 0;
182 case MAX77705_CHARGER_END_OF_CHARGE:
183 case MAX77705_CHARGER_DONE:
184 *val = POWER_SUPPLY_STATUS_FULL;
185 return 0;
186 /* those values hard coded as in vendor kernel, because of */
187 /* failure to determine it's actual meaning. */
188 case 0x05:
189 case 0x06:
190 case 0x07:
191 *val = POWER_SUPPLY_STATUS_NOT_CHARGING;
192 return 0;
193 case 0x08:
194 case 0xA:
195 case 0xB:
196 *val = POWER_SUPPLY_STATUS_DISCHARGING;
197 return 0;
198 default:
199 *val = POWER_SUPPLY_STATUS_UNKNOWN;
200 return 0;
201 }
202
203 return 0;
204 }
205
max77705_get_vbus_state(struct regmap * regmap,int * value)206 static int max77705_get_vbus_state(struct regmap *regmap, int *value)
207 {
208 int ret;
209 unsigned int charge_dtls;
210
211 ret = regmap_read(regmap, MAX77705_CHG_REG_DETAILS_00, &charge_dtls);
212 if (ret)
213 return ret;
214
215 charge_dtls = ((charge_dtls & MAX77705_CHGIN_DTLS) >>
216 MAX77705_CHGIN_DTLS_SHIFT);
217
218 switch (charge_dtls) {
219 case 0x00:
220 *value = POWER_SUPPLY_HEALTH_UNDERVOLTAGE;
221 break;
222 case 0x01:
223 *value = POWER_SUPPLY_HEALTH_UNDERVOLTAGE;
224 break;
225 case 0x02:
226 *value = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
227 break;
228 case 0x03:
229 *value = POWER_SUPPLY_HEALTH_GOOD;
230 break;
231 default:
232 return 0;
233 }
234 return 0;
235 }
236
max77705_get_battery_health(struct max77705_charger_data * charger,int * value)237 static int max77705_get_battery_health(struct max77705_charger_data *charger,
238 int *value)
239 {
240 struct regmap *regmap = charger->regmap;
241 unsigned int bat_dtls;
242
243 regmap_read(regmap, MAX77705_CHG_REG_DETAILS_01, &bat_dtls);
244 bat_dtls = ((bat_dtls & MAX77705_BAT_DTLS) >> MAX77705_BAT_DTLS_SHIFT);
245
246 switch (bat_dtls) {
247 case MAX77705_BATTERY_NOBAT:
248 dev_dbg(charger->dev, "%s: No battery and the charger is suspended\n",
249 __func__);
250 *value = POWER_SUPPLY_HEALTH_NO_BATTERY;
251 break;
252 case MAX77705_BATTERY_PREQUALIFICATION:
253 dev_dbg(charger->dev, "%s: battery is okay but its voltage is low(~VPQLB)\n",
254 __func__);
255 break;
256 case MAX77705_BATTERY_DEAD:
257 dev_dbg(charger->dev, "%s: battery dead\n", __func__);
258 *value = POWER_SUPPLY_HEALTH_DEAD;
259 break;
260 case MAX77705_BATTERY_GOOD:
261 case MAX77705_BATTERY_LOWVOLTAGE:
262 *value = POWER_SUPPLY_HEALTH_GOOD;
263 break;
264 case MAX77705_BATTERY_OVERVOLTAGE:
265 dev_dbg(charger->dev, "%s: battery ovp\n", __func__);
266 *value = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
267 break;
268 default:
269 dev_dbg(charger->dev, "%s: battery unknown\n", __func__);
270 *value = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
271 break;
272 }
273
274 return 0;
275 }
276
max77705_get_health(struct max77705_charger_data * charger,int * val)277 static int max77705_get_health(struct max77705_charger_data *charger, int *val)
278 {
279 struct regmap *regmap = charger->regmap;
280 int ret, is_online = 0;
281
282 ret = max77705_get_online(regmap, &is_online);
283 if (ret)
284 return ret;
285 if (is_online) {
286 ret = max77705_get_vbus_state(regmap, val);
287 if (ret || (*val != POWER_SUPPLY_HEALTH_GOOD))
288 return ret;
289 }
290 return max77705_get_battery_health(charger, val);
291 }
292
max77705_get_input_current(struct max77705_charger_data * charger,int * val)293 static int max77705_get_input_current(struct max77705_charger_data *charger,
294 int *val)
295 {
296 unsigned int reg_data;
297 int get_current = 0;
298 struct regmap *regmap = charger->regmap;
299
300 regmap_read(regmap, MAX77705_CHG_REG_CNFG_09, ®_data);
301
302 reg_data &= MAX77705_CHG_CHGIN_LIM_MASK;
303
304 if (reg_data <= 3)
305 get_current = MAX77705_CURRENT_CHGIN_MIN;
306 else if (reg_data >= MAX77705_CHG_CHGIN_LIM_MASK)
307 get_current = MAX77705_CURRENT_CHGIN_MAX;
308 else
309 get_current = (reg_data + 1) * MAX77705_CURRENT_CHGIN_STEP;
310
311 *val = get_current;
312
313 return 0;
314 }
315
max77705_get_charge_current(struct max77705_charger_data * charger,int * val)316 static int max77705_get_charge_current(struct max77705_charger_data *charger,
317 int *val)
318 {
319 unsigned int reg_data;
320 struct regmap *regmap = charger->regmap;
321
322 regmap_read(regmap, MAX77705_CHG_REG_CNFG_02, ®_data);
323 reg_data &= MAX77705_CHG_CC;
324
325 *val = reg_data <= 0x2 ? MAX77705_CURRENT_CHGIN_MIN : reg_data * MAX77705_CURRENT_CHG_STEP;
326
327 return 0;
328 }
329
max77705_set_float_voltage(struct max77705_charger_data * charger,int float_voltage)330 static int max77705_set_float_voltage(struct max77705_charger_data *charger,
331 int float_voltage)
332 {
333 int float_voltage_mv;
334 unsigned int reg_data = 0;
335 struct regmap *regmap = charger->regmap;
336
337 float_voltage_mv = float_voltage / 1000;
338 reg_data = float_voltage_mv <= 4000 ? 0x0 :
339 float_voltage_mv >= 4500 ? 0x23 :
340 (float_voltage_mv <= 4200) ? (float_voltage_mv - 4000) / 50 :
341 (((float_voltage_mv - 4200) / 10) + 0x04);
342
343 return regmap_update_bits(regmap, MAX77705_CHG_REG_CNFG_04,
344 MAX77705_CHG_CV_PRM_MASK,
345 (reg_data << MAX77705_CHG_CV_PRM_SHIFT));
346 }
347
max77705_get_float_voltage(struct max77705_charger_data * charger,int * val)348 static int max77705_get_float_voltage(struct max77705_charger_data *charger,
349 int *val)
350 {
351 unsigned int reg_data = 0;
352 int voltage_mv;
353 struct regmap *regmap = charger->regmap;
354
355 regmap_read(regmap, MAX77705_CHG_REG_CNFG_04, ®_data);
356 reg_data &= MAX77705_CHG_PRM_MASK;
357 voltage_mv = reg_data <= 0x04 ? reg_data * 50 + 4000 :
358 (reg_data - 4) * 10 + 4200;
359 *val = voltage_mv * 1000;
360
361 return 0;
362 }
363
max77705_chg_get_property(struct power_supply * psy,enum power_supply_property psp,union power_supply_propval * val)364 static int max77705_chg_get_property(struct power_supply *psy,
365 enum power_supply_property psp,
366 union power_supply_propval *val)
367 {
368 struct max77705_charger_data *charger = power_supply_get_drvdata(psy);
369 struct regmap *regmap = charger->regmap;
370
371 switch (psp) {
372 case POWER_SUPPLY_PROP_ONLINE:
373 return max77705_get_online(regmap, &val->intval);
374 case POWER_SUPPLY_PROP_PRESENT:
375 return max77705_check_battery(charger, &val->intval);
376 case POWER_SUPPLY_PROP_STATUS:
377 return max77705_get_status(charger, &val->intval);
378 case POWER_SUPPLY_PROP_CHARGE_TYPE:
379 return max77705_get_charge_type(charger, &val->intval);
380 case POWER_SUPPLY_PROP_HEALTH:
381 return max77705_get_health(charger, &val->intval);
382 case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
383 return max77705_get_input_current(charger, &val->intval);
384 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
385 return max77705_get_charge_current(charger, &val->intval);
386 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
387 return max77705_get_float_voltage(charger, &val->intval);
388 case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
389 val->intval = charger->bat_info->voltage_max_design_uv;
390 break;
391 case POWER_SUPPLY_PROP_MODEL_NAME:
392 val->strval = max77705_charger_model;
393 break;
394 case POWER_SUPPLY_PROP_MANUFACTURER:
395 val->strval = max77705_charger_manufacturer;
396 break;
397 default:
398 return -EINVAL;
399 }
400 return 0;
401 }
402
403 static const struct power_supply_desc max77705_charger_psy_desc = {
404 .name = "max77705-charger",
405 .type = POWER_SUPPLY_TYPE_USB,
406 .properties = max77705_charger_props,
407 .num_properties = ARRAY_SIZE(max77705_charger_props),
408 .get_property = max77705_chg_get_property,
409 };
410
max77705_chgin_isr_work(struct work_struct * work)411 static void max77705_chgin_isr_work(struct work_struct *work)
412 {
413 struct max77705_charger_data *charger =
414 container_of(work, struct max77705_charger_data, chgin_work);
415
416 power_supply_changed(charger->psy_chg);
417 }
418
max77705_charger_initialize(struct max77705_charger_data * chg)419 static void max77705_charger_initialize(struct max77705_charger_data *chg)
420 {
421 u8 reg_data;
422 struct power_supply_battery_info *info;
423 struct regmap *regmap = chg->regmap;
424
425 if (power_supply_get_battery_info(chg->psy_chg, &info) < 0)
426 return;
427
428 chg->bat_info = info;
429
430 /* unlock charger setting protect */
431 /* slowest LX slope */
432 reg_data = MAX77705_CHGPROT_MASK | MAX77705_SLOWEST_LX_SLOPE;
433 regmap_update_bits(regmap, MAX77705_CHG_REG_CNFG_06, reg_data,
434 reg_data);
435
436 /* fast charge timer disable */
437 /* restart threshold disable */
438 /* pre-qual charge disable */
439 reg_data = (MAX77705_FCHGTIME_DISABLE << MAX77705_FCHGTIME_SHIFT) |
440 (MAX77705_CHG_RSTRT_DISABLE << MAX77705_CHG_RSTRT_SHIFT) |
441 (MAX77705_CHG_PQEN_DISABLE << MAX77705_PQEN_SHIFT);
442 regmap_update_bits(regmap, MAX77705_CHG_REG_CNFG_01,
443 (MAX77705_FCHGTIME_MASK |
444 MAX77705_CHG_RSTRT_MASK |
445 MAX77705_PQEN_MASK),
446 reg_data);
447
448 /* OTG off(UNO on), boost off */
449 regmap_update_bits(regmap, MAX77705_CHG_REG_CNFG_00,
450 MAX77705_OTG_CTRL, 0);
451
452 /* charge current 450mA(default) */
453 /* otg current limit 900mA */
454 regmap_update_bits(regmap, MAX77705_CHG_REG_CNFG_02,
455 MAX77705_OTG_ILIM_MASK,
456 MAX77705_OTG_ILIM_900 << MAX77705_OTG_ILIM_SHIFT);
457
458 /* BAT to SYS OCP 4.80A */
459 regmap_update_bits(regmap, MAX77705_CHG_REG_CNFG_05,
460 MAX77705_REG_B2SOVRC_MASK,
461 MAX77705_B2SOVRC_4_8A << MAX77705_REG_B2SOVRC_SHIFT);
462 /* top off current 150mA */
463 /* top off timer 30min */
464 reg_data = (MAX77705_TO_ITH_150MA << MAX77705_TO_ITH_SHIFT) |
465 (MAX77705_TO_TIME_30M << MAX77705_TO_TIME_SHIFT) |
466 (MAX77705_SYS_TRACK_DISABLE << MAX77705_SYS_TRACK_DIS_SHIFT);
467 regmap_update_bits(regmap, MAX77705_CHG_REG_CNFG_03,
468 (MAX77705_TO_ITH_MASK |
469 MAX77705_TO_TIME_MASK |
470 MAX77705_SYS_TRACK_DIS_MASK), reg_data);
471
472 /* cv voltage 4.2V or 4.35V */
473 /* MINVSYS 3.6V(default) */
474 if (info->voltage_max_design_uv < 0) {
475 dev_warn(chg->dev, "missing battery:voltage-max-design-microvolt\n");
476 max77705_set_float_voltage(chg, 4200000);
477 } else {
478 max77705_set_float_voltage(chg, info->voltage_max_design_uv);
479 }
480
481 regmap_update_bits(regmap, MAX77705_CHG_REG_CNFG_12,
482 MAX77705_VCHGIN_REG_MASK, MAX77705_VCHGIN_4_5);
483 regmap_update_bits(regmap, MAX77705_CHG_REG_CNFG_12,
484 MAX77705_WCIN_REG_MASK, MAX77705_WCIN_4_5);
485
486 /* Watchdog timer */
487 regmap_update_bits(regmap, MAX77705_CHG_REG_CNFG_00,
488 MAX77705_WDTEN_MASK, 0);
489
490 /* Active Discharge Enable */
491 regmap_update_bits(regmap, MAX77705_PMIC_REG_MAINCTRL1, 1, 1);
492
493 /* VBYPSET=5.0V */
494 regmap_update_bits(regmap, MAX77705_CHG_REG_CNFG_11, MAX77705_VBYPSET_MASK, 0);
495
496 /* Switching Frequency : 1.5MHz */
497 regmap_update_bits(regmap, MAX77705_CHG_REG_CNFG_08, MAX77705_REG_FSW_MASK,
498 (MAX77705_CHG_FSW_1_5MHz << MAX77705_REG_FSW_SHIFT));
499
500 /* Auto skip mode */
501 regmap_update_bits(regmap, MAX77705_CHG_REG_CNFG_12, MAX77705_REG_DISKIP_MASK,
502 (MAX77705_AUTO_SKIP << MAX77705_REG_DISKIP_SHIFT));
503 }
504
max77705_charger_probe(struct i2c_client * i2c)505 static int max77705_charger_probe(struct i2c_client *i2c)
506 {
507 struct power_supply_config pscfg = {};
508 struct max77705_charger_data *chg;
509 struct device *dev;
510 struct regmap_irq_chip_data *irq_data;
511 int ret;
512
513 dev = &i2c->dev;
514
515 chg = devm_kzalloc(dev, sizeof(*chg), GFP_KERNEL);
516 if (!chg)
517 return -ENOMEM;
518
519 chg->dev = dev;
520 i2c_set_clientdata(i2c, chg);
521
522 chg->regmap = devm_regmap_init_i2c(i2c, &max77705_chg_regmap_config);
523 if (IS_ERR(chg->regmap))
524 return PTR_ERR(chg->regmap);
525
526 ret = regmap_update_bits(chg->regmap,
527 MAX77705_CHG_REG_INT_MASK,
528 MAX77705_CHGIN_IM, 0);
529 if (ret)
530 return ret;
531
532 pscfg.fwnode = dev_fwnode(dev);
533 pscfg.drv_data = chg;
534
535 chg->psy_chg = devm_power_supply_register(dev, &max77705_charger_psy_desc, &pscfg);
536 if (IS_ERR(chg->psy_chg))
537 return PTR_ERR(chg->psy_chg);
538
539 max77705_charger_irq_chip.irq_drv_data = chg;
540 ret = devm_regmap_add_irq_chip(chg->dev, chg->regmap, i2c->irq,
541 IRQF_ONESHOT | IRQF_SHARED, 0,
542 &max77705_charger_irq_chip,
543 &irq_data);
544 if (ret)
545 return dev_err_probe(dev, ret, "failed to add irq chip\n");
546
547 chg->wqueue = create_singlethread_workqueue(dev_name(dev));
548 if (!chg->wqueue)
549 return dev_err_probe(dev, -ENOMEM, "failed to create workqueue\n");
550
551 ret = devm_work_autocancel(dev, &chg->chgin_work, max77705_chgin_isr_work);
552 if (ret) {
553 dev_err_probe(dev, ret, "failed to initialize interrupt work\n");
554 goto destroy_wq;
555 }
556
557 max77705_charger_initialize(chg);
558
559 ret = max77705_charger_enable(chg);
560 if (ret) {
561 dev_err_probe(dev, ret, "failed to enable charge\n");
562 goto destroy_wq;
563 }
564
565 return devm_add_action_or_reset(dev, max77705_charger_disable, chg);
566
567 destroy_wq:
568 destroy_workqueue(chg->wqueue);
569 return ret;
570 }
571
572 static const struct of_device_id max77705_charger_of_match[] = {
573 { .compatible = "maxim,max77705-charger" },
574 { }
575 };
576 MODULE_DEVICE_TABLE(of, max77705_charger_of_match);
577
578 static struct i2c_driver max77705_charger_driver = {
579 .driver = {
580 .name = "max77705-charger",
581 .of_match_table = max77705_charger_of_match,
582 },
583 .probe = max77705_charger_probe,
584 };
585 module_i2c_driver(max77705_charger_driver);
586
587 MODULE_AUTHOR("Dzmitry Sankouski <dsankouski@gmail.com>");
588 MODULE_DESCRIPTION("Maxim MAX77705 charger driver");
589 MODULE_LICENSE("GPL");
590