1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * DA9150 Charger Driver
4 *
5 * Copyright (c) 2014 Dialog Semiconductor
6 *
7 * Author: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
8 */
9
10 #include <linux/kernel.h>
11 #include <linux/slab.h>
12 #include <linux/module.h>
13 #include <linux/platform_device.h>
14 #include <linux/interrupt.h>
15 #include <linux/power_supply.h>
16 #include <linux/notifier.h>
17 #include <linux/usb/phy.h>
18 #include <linux/iio/consumer.h>
19 #include <linux/mfd/da9150/core.h>
20 #include <linux/mfd/da9150/registers.h>
21
22 /* Private data */
23 struct da9150_charger {
24 struct da9150 *da9150;
25 struct device *dev;
26
27 struct power_supply *usb;
28 struct power_supply *battery;
29 struct power_supply *supply_online;
30
31 struct usb_phy *usb_phy;
32 struct notifier_block otg_nb;
33 struct work_struct otg_work;
34 unsigned long usb_event;
35
36 struct iio_channel *ibus_chan;
37 struct iio_channel *vbus_chan;
38 struct iio_channel *tjunc_chan;
39 struct iio_channel *vbat_chan;
40 };
41
da9150_charger_supply_online(struct da9150_charger * charger,struct power_supply * psy,union power_supply_propval * val)42 static inline int da9150_charger_supply_online(struct da9150_charger *charger,
43 struct power_supply *psy,
44 union power_supply_propval *val)
45 {
46 val->intval = (psy == charger->supply_online) ? 1 : 0;
47
48 return 0;
49 }
50
51 /* Charger Properties */
da9150_charger_vbus_voltage_now(struct da9150_charger * charger,union power_supply_propval * val)52 static int da9150_charger_vbus_voltage_now(struct da9150_charger *charger,
53 union power_supply_propval *val)
54 {
55 int v_val, ret;
56
57 /* Read processed value - mV units */
58 ret = iio_read_channel_processed(charger->vbus_chan, &v_val);
59 if (ret < 0)
60 return ret;
61
62 /* Convert voltage to expected uV units */
63 val->intval = v_val * 1000;
64
65 return 0;
66 }
67
da9150_charger_ibus_current_avg(struct da9150_charger * charger,union power_supply_propval * val)68 static int da9150_charger_ibus_current_avg(struct da9150_charger *charger,
69 union power_supply_propval *val)
70 {
71 int i_val, ret;
72
73 /* Read processed value - mA units */
74 ret = iio_read_channel_processed(charger->ibus_chan, &i_val);
75 if (ret < 0)
76 return ret;
77
78 /* Convert current to expected uA units */
79 val->intval = i_val * 1000;
80
81 return 0;
82 }
83
da9150_charger_tjunc_temp(struct da9150_charger * charger,union power_supply_propval * val)84 static int da9150_charger_tjunc_temp(struct da9150_charger *charger,
85 union power_supply_propval *val)
86 {
87 int t_val, ret;
88
89 /* Read processed value - 0.001 degrees C units */
90 ret = iio_read_channel_processed(charger->tjunc_chan, &t_val);
91 if (ret < 0)
92 return ret;
93
94 /* Convert temp to expect 0.1 degrees C units */
95 val->intval = t_val / 100;
96
97 return 0;
98 }
99
100 static enum power_supply_property da9150_charger_props[] = {
101 POWER_SUPPLY_PROP_ONLINE,
102 POWER_SUPPLY_PROP_VOLTAGE_NOW,
103 POWER_SUPPLY_PROP_CURRENT_AVG,
104 POWER_SUPPLY_PROP_TEMP,
105 };
106
da9150_charger_get_prop(struct power_supply * psy,enum power_supply_property psp,union power_supply_propval * val)107 static int da9150_charger_get_prop(struct power_supply *psy,
108 enum power_supply_property psp,
109 union power_supply_propval *val)
110 {
111 struct da9150_charger *charger = dev_get_drvdata(psy->dev.parent);
112 int ret;
113
114 switch (psp) {
115 case POWER_SUPPLY_PROP_ONLINE:
116 ret = da9150_charger_supply_online(charger, psy, val);
117 break;
118 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
119 ret = da9150_charger_vbus_voltage_now(charger, val);
120 break;
121 case POWER_SUPPLY_PROP_CURRENT_AVG:
122 ret = da9150_charger_ibus_current_avg(charger, val);
123 break;
124 case POWER_SUPPLY_PROP_TEMP:
125 ret = da9150_charger_tjunc_temp(charger, val);
126 break;
127 default:
128 ret = -EINVAL;
129 break;
130 }
131
132 return ret;
133 }
134
135 /* Battery Properties */
da9150_charger_battery_status(struct da9150_charger * charger,union power_supply_propval * val)136 static int da9150_charger_battery_status(struct da9150_charger *charger,
137 union power_supply_propval *val)
138 {
139 u8 reg;
140
141 /* Check to see if battery is discharging */
142 reg = da9150_reg_read(charger->da9150, DA9150_STATUS_H);
143
144 if (((reg & DA9150_VBUS_STAT_MASK) == DA9150_VBUS_STAT_OFF) ||
145 ((reg & DA9150_VBUS_STAT_MASK) == DA9150_VBUS_STAT_WAIT)) {
146 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
147
148 return 0;
149 }
150
151 reg = da9150_reg_read(charger->da9150, DA9150_STATUS_J);
152
153 /* Now check for other states */
154 switch (reg & DA9150_CHG_STAT_MASK) {
155 case DA9150_CHG_STAT_ACT:
156 case DA9150_CHG_STAT_PRE:
157 case DA9150_CHG_STAT_CC:
158 case DA9150_CHG_STAT_CV:
159 val->intval = POWER_SUPPLY_STATUS_CHARGING;
160 break;
161 case DA9150_CHG_STAT_OFF:
162 case DA9150_CHG_STAT_SUSP:
163 case DA9150_CHG_STAT_TEMP:
164 case DA9150_CHG_STAT_TIME:
165 case DA9150_CHG_STAT_BAT:
166 val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
167 break;
168 case DA9150_CHG_STAT_FULL:
169 val->intval = POWER_SUPPLY_STATUS_FULL;
170 break;
171 default:
172 val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
173 break;
174 }
175
176 return 0;
177 }
178
da9150_charger_battery_health(struct da9150_charger * charger,union power_supply_propval * val)179 static int da9150_charger_battery_health(struct da9150_charger *charger,
180 union power_supply_propval *val)
181 {
182 u8 reg;
183
184 reg = da9150_reg_read(charger->da9150, DA9150_STATUS_J);
185
186 /* Check if temperature limit reached */
187 switch (reg & DA9150_CHG_TEMP_MASK) {
188 case DA9150_CHG_TEMP_UNDER:
189 val->intval = POWER_SUPPLY_HEALTH_COLD;
190 return 0;
191 case DA9150_CHG_TEMP_OVER:
192 val->intval = POWER_SUPPLY_HEALTH_OVERHEAT;
193 return 0;
194 default:
195 break;
196 }
197
198 /* Check for other health states */
199 switch (reg & DA9150_CHG_STAT_MASK) {
200 case DA9150_CHG_STAT_ACT:
201 case DA9150_CHG_STAT_PRE:
202 val->intval = POWER_SUPPLY_HEALTH_DEAD;
203 break;
204 case DA9150_CHG_STAT_TIME:
205 val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
206 break;
207 default:
208 val->intval = POWER_SUPPLY_HEALTH_GOOD;
209 break;
210 }
211
212 return 0;
213 }
214
da9150_charger_battery_present(struct da9150_charger * charger,union power_supply_propval * val)215 static int da9150_charger_battery_present(struct da9150_charger *charger,
216 union power_supply_propval *val)
217 {
218 u8 reg;
219
220 /* Check if battery present or removed */
221 reg = da9150_reg_read(charger->da9150, DA9150_STATUS_J);
222 if ((reg & DA9150_CHG_STAT_MASK) == DA9150_CHG_STAT_BAT)
223 val->intval = 0;
224 else
225 val->intval = 1;
226
227 return 0;
228 }
229
da9150_charger_battery_charge_type(struct da9150_charger * charger,union power_supply_propval * val)230 static int da9150_charger_battery_charge_type(struct da9150_charger *charger,
231 union power_supply_propval *val)
232 {
233 u8 reg;
234
235 reg = da9150_reg_read(charger->da9150, DA9150_STATUS_J);
236
237 switch (reg & DA9150_CHG_STAT_MASK) {
238 case DA9150_CHG_STAT_CC:
239 val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST;
240 break;
241 case DA9150_CHG_STAT_ACT:
242 case DA9150_CHG_STAT_PRE:
243 case DA9150_CHG_STAT_CV:
244 val->intval = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
245 break;
246 default:
247 val->intval = POWER_SUPPLY_CHARGE_TYPE_NONE;
248 break;
249 }
250
251 return 0;
252 }
253
da9150_charger_battery_voltage_min(struct da9150_charger * charger,union power_supply_propval * val)254 static int da9150_charger_battery_voltage_min(struct da9150_charger *charger,
255 union power_supply_propval *val)
256 {
257 u8 reg;
258
259 reg = da9150_reg_read(charger->da9150, DA9150_PPR_CHGCTRL_C);
260
261 /* Value starts at 2500 mV, 50 mV increments, presented in uV */
262 val->intval = ((reg & DA9150_CHG_VFAULT_MASK) * 50000) + 2500000;
263
264 return 0;
265 }
266
da9150_charger_battery_voltage_now(struct da9150_charger * charger,union power_supply_propval * val)267 static int da9150_charger_battery_voltage_now(struct da9150_charger *charger,
268 union power_supply_propval *val)
269 {
270 int v_val, ret;
271
272 /* Read processed value - mV units */
273 ret = iio_read_channel_processed(charger->vbat_chan, &v_val);
274 if (ret < 0)
275 return ret;
276
277 val->intval = v_val * 1000;
278
279 return 0;
280 }
281
da9150_charger_battery_current_max(struct da9150_charger * charger,union power_supply_propval * val)282 static int da9150_charger_battery_current_max(struct da9150_charger *charger,
283 union power_supply_propval *val)
284 {
285 int reg;
286
287 reg = da9150_reg_read(charger->da9150, DA9150_PPR_CHGCTRL_D);
288
289 /* 25mA increments */
290 val->intval = reg * 25000;
291
292 return 0;
293 }
294
da9150_charger_battery_voltage_max(struct da9150_charger * charger,union power_supply_propval * val)295 static int da9150_charger_battery_voltage_max(struct da9150_charger *charger,
296 union power_supply_propval *val)
297 {
298 u8 reg;
299
300 reg = da9150_reg_read(charger->da9150, DA9150_PPR_CHGCTRL_B);
301
302 /* Value starts at 3650 mV, 25 mV increments, presented in uV */
303 val->intval = ((reg & DA9150_CHG_VBAT_MASK) * 25000) + 3650000;
304 return 0;
305 }
306
307 static enum power_supply_property da9150_charger_bat_props[] = {
308 POWER_SUPPLY_PROP_STATUS,
309 POWER_SUPPLY_PROP_ONLINE,
310 POWER_SUPPLY_PROP_HEALTH,
311 POWER_SUPPLY_PROP_PRESENT,
312 POWER_SUPPLY_PROP_CHARGE_TYPE,
313 POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
314 POWER_SUPPLY_PROP_VOLTAGE_NOW,
315 POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX,
316 POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX,
317 };
318
da9150_charger_battery_get_prop(struct power_supply * psy,enum power_supply_property psp,union power_supply_propval * val)319 static int da9150_charger_battery_get_prop(struct power_supply *psy,
320 enum power_supply_property psp,
321 union power_supply_propval *val)
322 {
323 struct da9150_charger *charger = dev_get_drvdata(psy->dev.parent);
324 int ret;
325
326 switch (psp) {
327 case POWER_SUPPLY_PROP_STATUS:
328 ret = da9150_charger_battery_status(charger, val);
329 break;
330 case POWER_SUPPLY_PROP_ONLINE:
331 ret = da9150_charger_supply_online(charger, psy, val);
332 break;
333 case POWER_SUPPLY_PROP_HEALTH:
334 ret = da9150_charger_battery_health(charger, val);
335 break;
336 case POWER_SUPPLY_PROP_PRESENT:
337 ret = da9150_charger_battery_present(charger, val);
338 break;
339 case POWER_SUPPLY_PROP_CHARGE_TYPE:
340 ret = da9150_charger_battery_charge_type(charger, val);
341 break;
342 case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
343 ret = da9150_charger_battery_voltage_min(charger, val);
344 break;
345 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
346 ret = da9150_charger_battery_voltage_now(charger, val);
347 break;
348 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX:
349 ret = da9150_charger_battery_current_max(charger, val);
350 break;
351 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX:
352 ret = da9150_charger_battery_voltage_max(charger, val);
353 break;
354 default:
355 ret = -EINVAL;
356 break;
357 }
358
359 return ret;
360 }
361
da9150_charger_chg_irq(int irq,void * data)362 static irqreturn_t da9150_charger_chg_irq(int irq, void *data)
363 {
364 struct da9150_charger *charger = data;
365
366 power_supply_changed(charger->battery);
367
368 return IRQ_HANDLED;
369 }
370
da9150_charger_tjunc_irq(int irq,void * data)371 static irqreturn_t da9150_charger_tjunc_irq(int irq, void *data)
372 {
373 struct da9150_charger *charger = data;
374
375 /* Nothing we can really do except report this. */
376 dev_crit(charger->dev, "TJunc over temperature!!!\n");
377 power_supply_changed(charger->usb);
378
379 return IRQ_HANDLED;
380 }
381
da9150_charger_vfault_irq(int irq,void * data)382 static irqreturn_t da9150_charger_vfault_irq(int irq, void *data)
383 {
384 struct da9150_charger *charger = data;
385
386 /* Nothing we can really do except report this. */
387 dev_crit(charger->dev, "VSYS under voltage!!!\n");
388 power_supply_changed(charger->usb);
389 power_supply_changed(charger->battery);
390
391 return IRQ_HANDLED;
392 }
393
da9150_charger_vbus_irq(int irq,void * data)394 static irqreturn_t da9150_charger_vbus_irq(int irq, void *data)
395 {
396 struct da9150_charger *charger = data;
397 u8 reg;
398
399 reg = da9150_reg_read(charger->da9150, DA9150_STATUS_H);
400
401 /* Charger plugged in or battery only */
402 switch (reg & DA9150_VBUS_STAT_MASK) {
403 case DA9150_VBUS_STAT_OFF:
404 case DA9150_VBUS_STAT_WAIT:
405 charger->supply_online = charger->battery;
406 break;
407 case DA9150_VBUS_STAT_CHG:
408 charger->supply_online = charger->usb;
409 break;
410 default:
411 dev_warn(charger->dev, "Unknown VBUS state - reg = 0x%x\n",
412 reg);
413 charger->supply_online = NULL;
414 break;
415 }
416
417 power_supply_changed(charger->usb);
418 power_supply_changed(charger->battery);
419
420 return IRQ_HANDLED;
421 }
422
da9150_charger_otg_work(struct work_struct * data)423 static void da9150_charger_otg_work(struct work_struct *data)
424 {
425 struct da9150_charger *charger =
426 container_of(data, struct da9150_charger, otg_work);
427
428 switch (charger->usb_event) {
429 case USB_EVENT_ID:
430 /* Enable OTG Boost */
431 da9150_set_bits(charger->da9150, DA9150_PPR_BKCTRL_A,
432 DA9150_VBUS_MODE_MASK, DA9150_VBUS_MODE_OTG);
433 break;
434 case USB_EVENT_NONE:
435 /* Revert to charge mode */
436 power_supply_changed(charger->usb);
437 power_supply_changed(charger->battery);
438 da9150_set_bits(charger->da9150, DA9150_PPR_BKCTRL_A,
439 DA9150_VBUS_MODE_MASK, DA9150_VBUS_MODE_CHG);
440 break;
441 }
442 }
443
da9150_charger_otg_ncb(struct notifier_block * nb,unsigned long val,void * priv)444 static int da9150_charger_otg_ncb(struct notifier_block *nb, unsigned long val,
445 void *priv)
446 {
447 struct da9150_charger *charger =
448 container_of(nb, struct da9150_charger, otg_nb);
449
450 dev_dbg(charger->dev, "DA9150 OTG notify %lu\n", val);
451
452 charger->usb_event = val;
453 schedule_work(&charger->otg_work);
454
455 return NOTIFY_OK;
456 }
457
da9150_charger_register_irq(struct platform_device * pdev,irq_handler_t handler,const char * irq_name)458 static int da9150_charger_register_irq(struct platform_device *pdev,
459 irq_handler_t handler,
460 const char *irq_name)
461 {
462 struct device *dev = &pdev->dev;
463 struct da9150_charger *charger = platform_get_drvdata(pdev);
464 int irq, ret;
465
466 irq = platform_get_irq_byname(pdev, irq_name);
467 if (irq < 0)
468 return irq;
469
470 ret = request_threaded_irq(irq, NULL, handler, IRQF_ONESHOT, irq_name,
471 charger);
472 if (ret)
473 dev_err(dev, "Failed to request IRQ %d: %d\n", irq, ret);
474
475 return ret;
476 }
477
da9150_charger_unregister_irq(struct platform_device * pdev,const char * irq_name)478 static void da9150_charger_unregister_irq(struct platform_device *pdev,
479 const char *irq_name)
480 {
481 struct da9150_charger *charger = platform_get_drvdata(pdev);
482 int irq;
483
484 irq = platform_get_irq_byname(pdev, irq_name);
485 if (irq < 0)
486 return;
487
488 free_irq(irq, charger);
489 }
490
491 static const struct power_supply_desc usb_desc = {
492 .name = "da9150-usb",
493 .type = POWER_SUPPLY_TYPE_USB,
494 .properties = da9150_charger_props,
495 .num_properties = ARRAY_SIZE(da9150_charger_props),
496 .get_property = da9150_charger_get_prop,
497 };
498
499 static const struct power_supply_desc battery_desc = {
500 .name = "da9150-battery",
501 .type = POWER_SUPPLY_TYPE_BATTERY,
502 .properties = da9150_charger_bat_props,
503 .num_properties = ARRAY_SIZE(da9150_charger_bat_props),
504 .get_property = da9150_charger_battery_get_prop,
505 };
506
da9150_charger_probe(struct platform_device * pdev)507 static int da9150_charger_probe(struct platform_device *pdev)
508 {
509 struct device *dev = &pdev->dev;
510 struct da9150 *da9150 = dev_get_drvdata(dev->parent);
511 struct da9150_charger *charger;
512 u8 reg;
513 int ret;
514
515 charger = devm_kzalloc(dev, sizeof(struct da9150_charger), GFP_KERNEL);
516 if (!charger)
517 return -ENOMEM;
518
519 platform_set_drvdata(pdev, charger);
520 charger->da9150 = da9150;
521 charger->dev = dev;
522
523 /* Acquire ADC channels */
524 charger->ibus_chan = iio_channel_get(dev, "CHAN_IBUS");
525 if (IS_ERR(charger->ibus_chan)) {
526 ret = PTR_ERR(charger->ibus_chan);
527 goto ibus_chan_fail;
528 }
529
530 charger->vbus_chan = iio_channel_get(dev, "CHAN_VBUS");
531 if (IS_ERR(charger->vbus_chan)) {
532 ret = PTR_ERR(charger->vbus_chan);
533 goto vbus_chan_fail;
534 }
535
536 charger->tjunc_chan = iio_channel_get(dev, "CHAN_TJUNC");
537 if (IS_ERR(charger->tjunc_chan)) {
538 ret = PTR_ERR(charger->tjunc_chan);
539 goto tjunc_chan_fail;
540 }
541
542 charger->vbat_chan = iio_channel_get(dev, "CHAN_VBAT");
543 if (IS_ERR(charger->vbat_chan)) {
544 ret = PTR_ERR(charger->vbat_chan);
545 goto vbat_chan_fail;
546 }
547
548 /* Register power supplies */
549 charger->usb = power_supply_register(dev, &usb_desc, NULL);
550 if (IS_ERR(charger->usb)) {
551 ret = PTR_ERR(charger->usb);
552 goto usb_fail;
553 }
554
555 charger->battery = power_supply_register(dev, &battery_desc, NULL);
556 if (IS_ERR(charger->battery)) {
557 ret = PTR_ERR(charger->battery);
558 goto battery_fail;
559 }
560
561 /* Get initial online supply */
562 reg = da9150_reg_read(da9150, DA9150_STATUS_H);
563
564 switch (reg & DA9150_VBUS_STAT_MASK) {
565 case DA9150_VBUS_STAT_OFF:
566 case DA9150_VBUS_STAT_WAIT:
567 charger->supply_online = charger->battery;
568 break;
569 case DA9150_VBUS_STAT_CHG:
570 charger->supply_online = charger->usb;
571 break;
572 default:
573 dev_warn(dev, "Unknown VBUS state - reg = 0x%x\n", reg);
574 charger->supply_online = NULL;
575 break;
576 }
577
578 /* Setup OTG reporting & configuration */
579 charger->usb_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2);
580 if (!IS_ERR_OR_NULL(charger->usb_phy)) {
581 INIT_WORK(&charger->otg_work, da9150_charger_otg_work);
582 charger->otg_nb.notifier_call = da9150_charger_otg_ncb;
583 usb_register_notifier(charger->usb_phy, &charger->otg_nb);
584 }
585
586 /* Register IRQs */
587 ret = da9150_charger_register_irq(pdev, da9150_charger_chg_irq,
588 "CHG_STATUS");
589 if (ret < 0)
590 goto chg_irq_fail;
591
592 ret = da9150_charger_register_irq(pdev, da9150_charger_tjunc_irq,
593 "CHG_TJUNC");
594 if (ret < 0)
595 goto tjunc_irq_fail;
596
597 ret = da9150_charger_register_irq(pdev, da9150_charger_vfault_irq,
598 "CHG_VFAULT");
599 if (ret < 0)
600 goto vfault_irq_fail;
601
602 ret = da9150_charger_register_irq(pdev, da9150_charger_vbus_irq,
603 "CHG_VBUS");
604 if (ret < 0)
605 goto vbus_irq_fail;
606
607 return 0;
608
609
610 vbus_irq_fail:
611 da9150_charger_unregister_irq(pdev, "CHG_VFAULT");
612 vfault_irq_fail:
613 da9150_charger_unregister_irq(pdev, "CHG_TJUNC");
614 tjunc_irq_fail:
615 da9150_charger_unregister_irq(pdev, "CHG_STATUS");
616 chg_irq_fail:
617 if (!IS_ERR_OR_NULL(charger->usb_phy))
618 usb_unregister_notifier(charger->usb_phy, &charger->otg_nb);
619 battery_fail:
620 power_supply_unregister(charger->usb);
621
622 usb_fail:
623 iio_channel_release(charger->vbat_chan);
624
625 vbat_chan_fail:
626 iio_channel_release(charger->tjunc_chan);
627
628 tjunc_chan_fail:
629 iio_channel_release(charger->vbus_chan);
630
631 vbus_chan_fail:
632 iio_channel_release(charger->ibus_chan);
633
634 ibus_chan_fail:
635 return ret;
636 }
637
da9150_charger_remove(struct platform_device * pdev)638 static int da9150_charger_remove(struct platform_device *pdev)
639 {
640 struct da9150_charger *charger = platform_get_drvdata(pdev);
641 int irq;
642
643 /* Make sure IRQs are released before unregistering power supplies */
644 irq = platform_get_irq_byname(pdev, "CHG_VBUS");
645 free_irq(irq, charger);
646
647 irq = platform_get_irq_byname(pdev, "CHG_VFAULT");
648 free_irq(irq, charger);
649
650 irq = platform_get_irq_byname(pdev, "CHG_TJUNC");
651 free_irq(irq, charger);
652
653 irq = platform_get_irq_byname(pdev, "CHG_STATUS");
654 free_irq(irq, charger);
655
656 if (!IS_ERR_OR_NULL(charger->usb_phy))
657 usb_unregister_notifier(charger->usb_phy, &charger->otg_nb);
658 cancel_work_sync(&charger->otg_work);
659
660 power_supply_unregister(charger->battery);
661 power_supply_unregister(charger->usb);
662
663 /* Release ADC channels */
664 iio_channel_release(charger->ibus_chan);
665 iio_channel_release(charger->vbus_chan);
666 iio_channel_release(charger->tjunc_chan);
667 iio_channel_release(charger->vbat_chan);
668
669 return 0;
670 }
671
672 static struct platform_driver da9150_charger_driver = {
673 .driver = {
674 .name = "da9150-charger",
675 },
676 .probe = da9150_charger_probe,
677 .remove = da9150_charger_remove,
678 };
679
680 module_platform_driver(da9150_charger_driver);
681
682 MODULE_DESCRIPTION("Charger Driver for DA9150");
683 MODULE_AUTHOR("Adam Thomson <Adam.Thomson.Opensource@diasemi.com>");
684 MODULE_LICENSE("GPL");
685