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2024-01-04 1543e317f1da31b75942316931e8f491a8920811 
 kernel/drivers/power/supply/charger-manager.c
....@@ -1,15 +1,13 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
12 /*
23  * Copyright (C) 2011 Samsung Electronics Co., Ltd.
34  * MyungJoo Ham <myungjoo.ham@samsung.com>
45  *
56  * This driver enables to monitor battery health and control charger
67  * during suspend-to-mem.
7
- * Charger manager depends on other devices. register this later than
8
+ * Charger manager depends on other devices. Register this later than
89  * the depending devices.
910  *
10
- * This program is free software; you can redistribute it and/or modify
11
- * it under the terms of the GNU General Public License version 2 as
12
- * published by the Free Software Foundation.
1311 **/
1412 
1513 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
....@@ -28,24 +26,35 @@
2826 #include <linux/of.h>
2927 #include <linux/thermal.h>
3028 
29
+static struct {
30
+	const char *name;
31
+	u64 extcon_type;
32
+} extcon_mapping[] = {
33
+	/* Current textual representations */
34
+	{ "USB", EXTCON_USB },
35
+	{ "USB-HOST", EXTCON_USB_HOST },
36
+	{ "SDP", EXTCON_CHG_USB_SDP },
37
+	{ "DCP", EXTCON_CHG_USB_DCP },
38
+	{ "CDP", EXTCON_CHG_USB_CDP },
39
+	{ "ACA", EXTCON_CHG_USB_ACA },
40
+	{ "FAST-CHARGER", EXTCON_CHG_USB_FAST },
41
+	{ "SLOW-CHARGER", EXTCON_CHG_USB_SLOW },
42
+	{ "WPT", EXTCON_CHG_WPT },
43
+	{ "PD", EXTCON_CHG_USB_PD },
44
+	{ "DOCK", EXTCON_DOCK },
45
+	{ "JIG", EXTCON_JIG },
46
+	{ "MECHANICAL", EXTCON_MECHANICAL },
47
+	/* Deprecated textual representations */
48
+	{ "TA", EXTCON_CHG_USB_SDP },
49
+	{ "CHARGE-DOWNSTREAM", EXTCON_CHG_USB_CDP },
50
+};
51
+
3152 /*
32
- * Default termperature threshold for charging.
53
+ * Default temperature threshold for charging.
3354  * Every temperature units are in tenth of centigrade.
3455  */
3556 #define CM_DEFAULT_RECHARGE_TEMP_DIFF	50
3657 #define CM_DEFAULT_CHARGE_TEMP_MAX	500
37
-
38
-static const char * const default_event_names[] = {
39
-	[CM_EVENT_UNKNOWN] = "Unknown",
40
-	[CM_EVENT_BATT_FULL] = "Battery Full",
41
-	[CM_EVENT_BATT_IN] = "Battery Inserted",
42
-	[CM_EVENT_BATT_OUT] = "Battery Pulled Out",
43
-	[CM_EVENT_BATT_OVERHEAT] = "Battery Overheat",
44
-	[CM_EVENT_BATT_COLD] = "Battery Cold",
45
-	[CM_EVENT_EXT_PWR_IN_OUT] = "External Power Attach/Detach",
46
-	[CM_EVENT_CHG_START_STOP] = "Charging Start/Stop",
47
-	[CM_EVENT_OTHERS] = "Other battery events"
48
-};
4958 
5059 /*
5160  * Regard CM_JIFFIES_SMALL jiffies is small enough to ignore for
....@@ -62,8 +71,6 @@
6271  * rtc alarm. It should be 2 or larger
6372  */
6473 #define CM_RTC_SMALL		(2)
65
-
66
-#define UEVENT_BUF_SIZE		32
6774 
6875 static LIST_HEAD(cm_list);
6976 static DEFINE_MUTEX(cm_list_mtx);
....@@ -287,6 +294,19 @@
287294 	if (!fuel_gauge)
288295 		return false;
289296 
297
+	/* Full, if it's over the fullbatt voltage */
298
+	if (desc->fullbatt_uV > 0) {
299
+		ret = get_batt_uV(cm, &uV);
300
+		if (!ret) {
301
+			/* Battery is already full, checks voltage drop. */
302
+			if (cm->battery_status == POWER_SUPPLY_STATUS_FULL
303
+					&& desc->fullbatt_vchkdrop_uV)
304
+				uV += desc->fullbatt_vchkdrop_uV;
305
+			if (uV >= desc->fullbatt_uV)
306
+				return true;
307
+		}
308
+	}
309
+
290310 	if (desc->fullbatt_full_capacity > 0) {
291311 		val.intval = 0;
292312 
....@@ -294,15 +314,6 @@
294314 		ret = power_supply_get_property(fuel_gauge,
295315 				POWER_SUPPLY_PROP_CHARGE_FULL, &val);
296316 		if (!ret && val.intval > desc->fullbatt_full_capacity) {
297
-			is_full = true;
298
-			goto out;
299
-		}
300
-	}
301
-
302
-	/* Full, if it's over the fullbatt voltage */
303
-	if (desc->fullbatt_uV > 0) {
304
-		ret = get_batt_uV(cm, &uV);
305
-		if (!ret && uV >= desc->fullbatt_uV) {
306317 			is_full = true;
307318 			goto out;
308319 		}
....@@ -356,14 +367,14 @@
356367  * Note that Charger Manager keeps the charger enabled regardless whether
357368  * the charger is charging or not (because battery is full or no external
358369  * power source exists) except when CM needs to disable chargers forcibly
359
- * bacause of emergency causes; when the battery is overheated or too cold.
370
+ * because of emergency causes; when the battery is overheated or too cold.
360371  */
361372 static int try_charger_enable(struct charger_manager *cm, bool enable)
362373 {
363374 	int err = 0, i;
364375 	struct charger_desc *desc = cm->desc;
365376 
366
-	/* Ignore if it's redundent command */
377
+	/* Ignore if it's redundant command */
367378 	if (enable == cm->charger_enabled)
368379 		return 0;
369380 
....@@ -429,122 +440,6 @@
429440 }
430441 
431442 /**
432
- * try_charger_restart - Restart charging.
433
- * @cm: the Charger Manager representing the battery.
434
- *
435
- * Restart charging by turning off and on the charger.
436
- */
437
-static int try_charger_restart(struct charger_manager *cm)
438
-{
439
-	int err;
440
-
441
-	if (cm->emergency_stop)
442
-		return -EAGAIN;
443
-
444
-	err = try_charger_enable(cm, false);
445
-	if (err)
446
-		return err;
447
-
448
-	return try_charger_enable(cm, true);
449
-}
450
-
451
-/**
452
- * uevent_notify - Let users know something has changed.
453
- * @cm: the Charger Manager representing the battery.
454
- * @event: the event string.
455
- *
456
- * If @event is null, it implies that uevent_notify is called
457
- * by resume function. When called in the resume function, cm_suspended
458
- * should be already reset to false in order to let uevent_notify
459
- * notify the recent event during the suspend to users. While
460
- * suspended, uevent_notify does not notify users, but tracks
461
- * events so that uevent_notify can notify users later after resumed.
462
- */
463
-static void uevent_notify(struct charger_manager *cm, const char *event)
464
-{
465
-	static char env_str[UEVENT_BUF_SIZE + 1] = "";
466
-	static char env_str_save[UEVENT_BUF_SIZE + 1] = "";
467
-
468
-	if (cm_suspended) {
469
-		/* Nothing in suspended-event buffer */
470
-		if (env_str_save[0] == 0) {
471
-			if (!strncmp(env_str, event, UEVENT_BUF_SIZE))
472
-				return; /* status not changed */
473
-			strncpy(env_str_save, event, UEVENT_BUF_SIZE);
474
-			return;
475
-		}
476
-
477
-		if (!strncmp(env_str_save, event, UEVENT_BUF_SIZE))
478
-			return; /* Duplicated. */
479
-		strncpy(env_str_save, event, UEVENT_BUF_SIZE);
480
-		return;
481
-	}
482
-
483
-	if (event == NULL) {
484
-		/* No messages pending */
485
-		if (!env_str_save[0])
486
-			return;
487
-
488
-		strncpy(env_str, env_str_save, UEVENT_BUF_SIZE);
489
-		kobject_uevent(&cm->dev->kobj, KOBJ_CHANGE);
490
-		env_str_save[0] = 0;
491
-
492
-		return;
493
-	}
494
-
495
-	/* status not changed */
496
-	if (!strncmp(env_str, event, UEVENT_BUF_SIZE))
497
-		return;
498
-
499
-	/* save the status and notify the update */
500
-	strncpy(env_str, event, UEVENT_BUF_SIZE);
501
-	kobject_uevent(&cm->dev->kobj, KOBJ_CHANGE);
502
-
503
-	dev_info(cm->dev, "%s\n", event);
504
-}
505
-
506
-/**
507
- * fullbatt_vchk - Check voltage drop some times after "FULL" event.
508
- * @work: the work_struct appointing the function
509
- *
510
- * If a user has designated "fullbatt_vchkdrop_ms/uV" values with
511
- * charger_desc, Charger Manager checks voltage drop after the battery
512
- * "FULL" event. It checks whether the voltage has dropped more than
513
- * fullbatt_vchkdrop_uV by calling this function after fullbatt_vchkrop_ms.
514
- */
515
-static void fullbatt_vchk(struct work_struct *work)
516
-{
517
-	struct delayed_work *dwork = to_delayed_work(work);
518
-	struct charger_manager *cm = container_of(dwork,
519
-			struct charger_manager, fullbatt_vchk_work);
520
-	struct charger_desc *desc = cm->desc;
521
-	int batt_uV, err, diff;
522
-
523
-	/* remove the appointment for fullbatt_vchk */
524
-	cm->fullbatt_vchk_jiffies_at = 0;
525
-
526
-	if (!desc->fullbatt_vchkdrop_uV || !desc->fullbatt_vchkdrop_ms)
527
-		return;
528
-
529
-	err = get_batt_uV(cm, &batt_uV);
530
-	if (err) {
531
-		dev_err(cm->dev, "%s: get_batt_uV error(%d)\n", __func__, err);
532
-		return;
533
-	}
534
-
535
-	diff = desc->fullbatt_uV - batt_uV;
536
-	if (diff < 0)
537
-		return;
538
-
539
-	dev_info(cm->dev, "VBATT dropped %duV after full-batt\n", diff);
540
-
541
-	if (diff > desc->fullbatt_vchkdrop_uV) {
542
-		try_charger_restart(cm);
543
-		uevent_notify(cm, "Recharging");
544
-	}
545
-}
546
-
547
-/**
548443  * check_charging_duration - Monitor charging/discharging duration
549444  * @cm: the Charger Manager representing the battery.
550445  *
....@@ -571,19 +466,14 @@
571466 		if (duration > desc->charging_max_duration_ms) {
572467 			dev_info(cm->dev, "Charging duration exceed %ums\n",
573468 				 desc->charging_max_duration_ms);
574
-			uevent_notify(cm, "Discharging");
575
-			try_charger_enable(cm, false);
576469 			ret = true;
577470 		}
578
-	} else if (is_ext_pwr_online(cm) && !cm->charger_enabled) {
471
+	} else if (cm->battery_status == POWER_SUPPLY_STATUS_NOT_CHARGING) {
579472 		duration = curr - cm->charging_end_time;
580473 
581
-		if (duration > desc->discharging_max_duration_ms &&
582
-				is_ext_pwr_online(cm)) {
474
+		if (duration > desc->discharging_max_duration_ms) {
583475 			dev_info(cm->dev, "Discharging duration exceed %ums\n",
584476 				 desc->discharging_max_duration_ms);
585
-			uevent_notify(cm, "Recharging");
586
-			try_charger_enable(cm, true);
587477 			ret = true;
588478 		}
589479 	}
....@@ -643,7 +533,7 @@
643533 	if (ret) {
644534 		/* FIXME:
645535 		 * No information of battery temperature might
646
-		 * occur hazadous result. We have to handle it
536
+		 * occur hazardous result. We have to handle it
647537 		 * depending on battery type.
648538 		 */
649539 		dev_err(cm->dev, "Failed to get battery temperature\n");
....@@ -659,11 +549,50 @@
659549 	}
660550 
661551 	if (temp > upper_limit)
662
-		ret = CM_EVENT_BATT_OVERHEAT;
552
+		ret = CM_BATT_OVERHEAT;
663553 	else if (temp < lower_limit)
664
-		ret = CM_EVENT_BATT_COLD;
554
+		ret = CM_BATT_COLD;
555
+	else
556
+		ret = CM_BATT_OK;
557
+
558
+	cm->emergency_stop = ret;
665559 
666560 	return ret;
561
+}
562
+
563
+/**
564
+ * cm_get_target_status - Check current status and get next target status.
565
+ * @cm: the Charger Manager representing the battery.
566
+ */
567
+static int cm_get_target_status(struct charger_manager *cm)
568
+{
569
+	if (!is_ext_pwr_online(cm))
570
+		return POWER_SUPPLY_STATUS_DISCHARGING;
571
+
572
+	if (cm_check_thermal_status(cm)) {
573
+		/* Check if discharging duration exeeds limit. */
574
+		if (check_charging_duration(cm))
575
+			goto charging_ok;
576
+		return POWER_SUPPLY_STATUS_NOT_CHARGING;
577
+	}
578
+
579
+	switch (cm->battery_status) {
580
+	case POWER_SUPPLY_STATUS_CHARGING:
581
+		/* Check if charging duration exeeds limit. */
582
+		if (check_charging_duration(cm))
583
+			return POWER_SUPPLY_STATUS_FULL;
584
+		fallthrough;
585
+	case POWER_SUPPLY_STATUS_FULL:
586
+		if (is_full_charged(cm))
587
+			return POWER_SUPPLY_STATUS_FULL;
588
+		fallthrough;
589
+	default:
590
+		break;
591
+	}
592
+
593
+charging_ok:
594
+	/* Charging is allowed. */
595
+	return POWER_SUPPLY_STATUS_CHARGING;
667596 }
668597 
669598 /**
....@@ -675,60 +604,18 @@
675604  */
676605 static bool _cm_monitor(struct charger_manager *cm)
677606 {
678
-	int temp_alrt;
607
+	int target;
679608 
680
-	temp_alrt = cm_check_thermal_status(cm);
609
+	target = cm_get_target_status(cm);
681610 
682
-	/* It has been stopped already */
683
-	if (temp_alrt && cm->emergency_stop)
684
-		return false;
611
+	try_charger_enable(cm, (target == POWER_SUPPLY_STATUS_CHARGING));
685612 
686
-	/*
687
-	 * Check temperature whether overheat or cold.
688
-	 * If temperature is out of range normal state, stop charging.
689
-	 */
690
-	if (temp_alrt) {
691
-		cm->emergency_stop = temp_alrt;
692
-		if (!try_charger_enable(cm, false))
693
-			uevent_notify(cm, default_event_names[temp_alrt]);
694
-
695
-	/*
696
-	 * Check whole charging duration and discharing duration
697
-	 * after full-batt.
698
-	 */
699
-	} else if (!cm->emergency_stop && check_charging_duration(cm)) {
700
-		dev_dbg(cm->dev,
701
-			"Charging/Discharging duration is out of range\n");
702
-	/*
703
-	 * Check dropped voltage of battery. If battery voltage is more
704
-	 * dropped than fullbatt_vchkdrop_uV after fully charged state,
705
-	 * charger-manager have to recharge battery.
706
-	 */
707
-	} else if (!cm->emergency_stop && is_ext_pwr_online(cm) &&
708
-			!cm->charger_enabled) {
709
-		fullbatt_vchk(&cm->fullbatt_vchk_work.work);
710
-
711
-	/*
712
-	 * Check whether fully charged state to protect overcharge
713
-	 * if charger-manager is charging for battery.
714
-	 */
715
-	} else if (!cm->emergency_stop && is_full_charged(cm) &&
716
-			cm->charger_enabled) {
717
-		dev_info(cm->dev, "EVENT_HANDLE: Battery Fully Charged\n");
718
-		uevent_notify(cm, default_event_names[CM_EVENT_BATT_FULL]);
719
-
720
-		try_charger_enable(cm, false);
721
-
722
-		fullbatt_vchk(&cm->fullbatt_vchk_work.work);
723
-	} else {
724
-		cm->emergency_stop = 0;
725
-		if (is_ext_pwr_online(cm)) {
726
-			if (!try_charger_enable(cm, true))
727
-				uevent_notify(cm, "CHARGING");
728
-		}
613
+	if (cm->battery_status != target) {
614
+		cm->battery_status = target;
615
+		power_supply_changed(cm->charger_psy);
729616 	}
730617 
731
-	return true;
618
+	return (cm->battery_status == POWER_SUPPLY_STATUS_NOT_CHARGING);
732619 }
733620 
734621 /**
....@@ -821,66 +708,6 @@
821708 	schedule_work(&setup_polling);
822709 }
823710 
824
-/**
825
- * fullbatt_handler - Event handler for CM_EVENT_BATT_FULL
826
- * @cm: the Charger Manager representing the battery.
827
- */
828
-static void fullbatt_handler(struct charger_manager *cm)
829
-{
830
-	struct charger_desc *desc = cm->desc;
831
-
832
-	if (!desc->fullbatt_vchkdrop_uV || !desc->fullbatt_vchkdrop_ms)
833
-		goto out;
834
-
835
-	if (cm_suspended)
836
-		device_set_wakeup_capable(cm->dev, true);
837
-
838
-	mod_delayed_work(cm_wq, &cm->fullbatt_vchk_work,
839
-			 msecs_to_jiffies(desc->fullbatt_vchkdrop_ms));
840
-	cm->fullbatt_vchk_jiffies_at = jiffies + msecs_to_jiffies(
841
-				       desc->fullbatt_vchkdrop_ms);
842
-
843
-	if (cm->fullbatt_vchk_jiffies_at == 0)
844
-		cm->fullbatt_vchk_jiffies_at = 1;
845
-
846
-out:
847
-	dev_info(cm->dev, "EVENT_HANDLE: Battery Fully Charged\n");
848
-	uevent_notify(cm, default_event_names[CM_EVENT_BATT_FULL]);
849
-}
850
-
851
-/**
852
- * battout_handler - Event handler for CM_EVENT_BATT_OUT
853
- * @cm: the Charger Manager representing the battery.
854
- */
855
-static void battout_handler(struct charger_manager *cm)
856
-{
857
-	if (cm_suspended)
858
-		device_set_wakeup_capable(cm->dev, true);
859
-
860
-	if (!is_batt_present(cm)) {
861
-		dev_emerg(cm->dev, "Battery Pulled Out!\n");
862
-		uevent_notify(cm, default_event_names[CM_EVENT_BATT_OUT]);
863
-	} else {
864
-		uevent_notify(cm, "Battery Reinserted?");
865
-	}
866
-}
867
-
868
-/**
869
- * misc_event_handler - Handler for other evnets
870
- * @cm: the Charger Manager representing the battery.
871
- * @type: the Charger Manager representing the battery.
872
- */
873
-static void misc_event_handler(struct charger_manager *cm,
874
-			enum cm_event_types type)
875
-{
876
-	if (cm_suspended)
877
-		device_set_wakeup_capable(cm->dev, true);
878
-
879
-	if (is_polling_required(cm) && cm->desc->polling_interval_ms)
880
-		schedule_work(&setup_polling);
881
-	uevent_notify(cm, default_event_names[type]);
882
-}
883
-
884711 static int charger_get_property(struct power_supply *psy,
885712 		enum power_supply_property psp,
886713 		union power_supply_propval *val)
....@@ -893,12 +720,7 @@
893720 
894721 	switch (psp) {
895722 	case POWER_SUPPLY_PROP_STATUS:
896
-		if (is_charging(cm))
897
-			val->intval = POWER_SUPPLY_STATUS_CHARGING;
898
-		else if (is_ext_pwr_online(cm))
899
-			val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
900
-		else
901
-			val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
723
+		val->intval = cm->battery_status;
902724 		break;
903725 	case POWER_SUPPLY_PROP_HEALTH:
904726 		if (cm->emergency_stop > 0)
....@@ -927,7 +749,6 @@
927749 				POWER_SUPPLY_PROP_CURRENT_NOW, val);
928750 		break;
929751 	case POWER_SUPPLY_PROP_TEMP:
930
-	case POWER_SUPPLY_PROP_TEMP_AMBIENT:
931752 		return cm_get_battery_temperature(cm, &val->intval);
932753 	case POWER_SUPPLY_PROP_CAPACITY:
933754 		if (!is_batt_present(cm)) {
....@@ -983,35 +804,13 @@
983804 			val->intval = 0;
984805 		break;
985806 	case POWER_SUPPLY_PROP_CHARGE_FULL:
986
-		if (is_full_charged(cm))
987
-			val->intval = 1;
988
-		else
989
-			val->intval = 0;
990
-		ret = 0;
991
-		break;
992807 	case POWER_SUPPLY_PROP_CHARGE_NOW:
993
-		if (is_charging(cm)) {
994
-			fuel_gauge = power_supply_get_by_name(
995
-					cm->desc->psy_fuel_gauge);
996
-			if (!fuel_gauge) {
997
-				ret = -ENODEV;
998
-				break;
999
-			}
1000
-
1001
-			ret = power_supply_get_property(fuel_gauge,
1002
-						POWER_SUPPLY_PROP_CHARGE_NOW,
1003
-						val);
1004
-			if (ret) {
1005
-				val->intval = 1;
1006
-				ret = 0;
1007
-			} else {
1008
-				/* If CHARGE_NOW is supplied, use it */
1009
-				val->intval = (val->intval > 0) ?
1010
-						val->intval : 1;
1011
-			}
1012
-		} else {
1013
-			val->intval = 0;
808
+		fuel_gauge = power_supply_get_by_name(cm->desc->psy_fuel_gauge);
809
+		if (!fuel_gauge) {
810
+			ret = -ENODEV;
811
+			break;
1014812 		}
813
+		ret = power_supply_get_property(fuel_gauge, psp, val);
1015814 		break;
1016815 	default:
1017816 		return -EINVAL;
....@@ -1030,13 +829,12 @@
1030829 	POWER_SUPPLY_PROP_VOLTAGE_NOW,
1031830 	POWER_SUPPLY_PROP_CAPACITY,
1032831 	POWER_SUPPLY_PROP_ONLINE,
1033
-	POWER_SUPPLY_PROP_CHARGE_FULL,
1034832 	/*
1035833 	 * Optional properties are:
834
+	 * POWER_SUPPLY_PROP_CHARGE_FULL,
1036835 	 * POWER_SUPPLY_PROP_CHARGE_NOW,
1037836 	 * POWER_SUPPLY_PROP_CURRENT_NOW,
1038
-	 * POWER_SUPPLY_PROP_TEMP, and
1039
-	 * POWER_SUPPLY_PROP_TEMP_AMBIENT,
837
+	 * POWER_SUPPLY_PROP_TEMP,
1040838 	 */
1041839 };
1042840 
....@@ -1071,21 +869,6 @@
1071869 
1072870 	mutex_lock(&cm_list_mtx);
1073871 	list_for_each_entry(cm, &cm_list, entry) {
1074
-		unsigned int fbchk_ms = 0;
1075
-
1076
-		/* fullbatt_vchk is required. setup timer for that */
1077
-		if (cm->fullbatt_vchk_jiffies_at) {
1078
-			fbchk_ms = jiffies_to_msecs(cm->fullbatt_vchk_jiffies_at
1079
-						    - jiffies);
1080
-			if (time_is_before_eq_jiffies(
1081
-				cm->fullbatt_vchk_jiffies_at) ||
1082
-				msecs_to_jiffies(fbchk_ms) < CM_JIFFIES_SMALL) {
1083
-				fullbatt_vchk(&cm->fullbatt_vchk_work.work);
1084
-				fbchk_ms = 0;
1085
-			}
1086
-		}
1087
-		CM_MIN_VALID(wakeup_ms, fbchk_ms);
1088
-
1089872 		/* Skip if polling is not required for this CM */
1090873 		if (!is_polling_required(cm) && !cm->emergency_stop)
1091874 			continue;
....@@ -1147,7 +930,8 @@
1147930 			cable->min_uA, cable->max_uA);
1148931 	}
1149932 
1150
-	try_charger_enable(cable->cm, cable->attached);
933
+	cancel_delayed_work(&cm_monitor_work);
934
+	queue_delayed_work(cm_wq, &cm_monitor_work, 0);
1151935 }
1152936 
1153937 /**
....@@ -1171,15 +955,6 @@
1171955 	cable->attached = event;
1172956 
1173957 	/*
1174
-	 * Setup monitoring to check battery state
1175
-	 * when charger cable is attached.
1176
-	 */
1177
-	if (cable->attached && is_polling_required(cable->cm)) {
1178
-		cancel_work_sync(&setup_polling);
1179
-		schedule_work(&setup_polling);
1180
-	}
1181
-
1182
-	/*
1183958 	 * Setup work for controlling charger(regulator)
1184959 	 * according to charger cable.
1185960 	 */
....@@ -1198,7 +973,8 @@
1198973 static int charger_extcon_init(struct charger_manager *cm,
1199974 		struct charger_cable *cable)
1200975 {
1201
-	int ret;
976
+	int ret, i;
977
+	u64 extcon_type = EXTCON_NONE;
1202978 
1203979 	/*
1204980 	 * Charger manager use Extcon framework to identify
....@@ -1207,18 +983,43 @@
1207983 	 */
1208984 	INIT_WORK(&cable->wq, charger_extcon_work);
1209985 	cable->nb.notifier_call = charger_extcon_notifier;
1210
-	ret = extcon_register_interest(&cable->extcon_dev,
1211
-			cable->extcon_name, cable->name, &cable->nb);
1212
-	if (ret < 0) {
1213
-		pr_info("Cannot register extcon_dev for %s(cable: %s)\n",
986
+
987
+	cable->extcon_dev = extcon_get_extcon_dev(cable->extcon_name);
988
+	if (IS_ERR_OR_NULL(cable->extcon_dev)) {
989
+		pr_err("Cannot find extcon_dev for %s (cable: %s)\n",
1214990 			cable->extcon_name, cable->name);
991
+		if (cable->extcon_dev == NULL)
992
+			return -EPROBE_DEFER;
993
+		else
994
+			return PTR_ERR(cable->extcon_dev);
1215995 	}
1216996 
1217
-	return ret;
997
+	for (i = 0; i < ARRAY_SIZE(extcon_mapping); i++) {
998
+		if (!strcmp(cable->name, extcon_mapping[i].name)) {
999
+			extcon_type = extcon_mapping[i].extcon_type;
1000
+			break;
1001
+		}
1002
+	}
1003
+	if (extcon_type == EXTCON_NONE) {
1004
+		pr_err("Cannot find cable for type %s", cable->name);
1005
+		return -EINVAL;
1006
+	}
1007
+
1008
+	cable->extcon_type = extcon_type;
1009
+
1010
+	ret = devm_extcon_register_notifier(cm->dev, cable->extcon_dev,
1011
+		cable->extcon_type, &cable->nb);
1012
+	if (ret < 0) {
1013
+		pr_err("Cannot register extcon_dev for %s (cable: %s)\n",
1014
+			cable->extcon_name, cable->name);
1015
+		return ret;
1016
+	}
1017
+
1018
+	return 0;
12181019 }
12191020 
12201021 /**
1221
- * charger_manager_register_extcon - Register extcon device to recevie state
1022
+ * charger_manager_register_extcon - Register extcon device to receive state
12221023  *				     of charger cable.
12231024  * @cm: the Charger Manager representing the battery.
12241025  *
....@@ -1231,6 +1032,7 @@
12311032 {
12321033 	struct charger_desc *desc = cm->desc;
12331034 	struct charger_regulator *charger;
1035
+	unsigned long event;
12341036 	int ret;
12351037 	int i;
12361038 	int j;
....@@ -1258,6 +1060,11 @@
12581060 			}
12591061 			cable->charger = charger;
12601062 			cable->cm = cm;
1063
+
1064
+			event = extcon_get_state(cable->extcon_dev,
1065
+				cable->extcon_type);
1066
+			charger_extcon_notifier(&cable->nb,
1067
+				event, NULL);
12611068 		}
12621069 	}
12631070 
....@@ -1351,7 +1158,7 @@
13511158 }
13521159 
13531160 /**
1354
- * charger_manager_register_sysfs - Register sysfs entry for each charger
1161
+ * charger_manager_prepare_sysfs - Prepare sysfs entry for each charger
13551162  * @cm: the Charger Manager representing the battery.
13561163  *
13571164  * This function add sysfs entry for charger(regulator) to control charger from
....@@ -1363,34 +1170,30 @@
13631170  * externally_control, this charger isn't controlled from charger-manager and
13641171  * always stay off state of regulator.
13651172  */
1366
-static int charger_manager_register_sysfs(struct charger_manager *cm)
1173
+static int charger_manager_prepare_sysfs(struct charger_manager *cm)
13671174 {
13681175 	struct charger_desc *desc = cm->desc;
13691176 	struct charger_regulator *charger;
13701177 	int chargers_externally_control = 1;
1371
-	char buf[11];
1372
-	char *str;
1373
-	int ret;
1178
+	char *name;
13741179 	int i;
13751180 
13761181 	/* Create sysfs entry to control charger(regulator) */
13771182 	for (i = 0; i < desc->num_charger_regulators; i++) {
13781183 		charger = &desc->charger_regulators[i];
13791184 
1380
-		snprintf(buf, 10, "charger.%d", i);
1381
-		str = devm_kzalloc(cm->dev,
1382
-				strlen(buf) + 1, GFP_KERNEL);
1383
-		if (!str)
1185
+		name = devm_kasprintf(cm->dev, GFP_KERNEL, "charger.%d", i);
1186
+		if (!name)
13841187 			return -ENOMEM;
1385
-
1386
-		strcpy(str, buf);
13871188 
13881189 		charger->attrs[0] = &charger->attr_name.attr;
13891190 		charger->attrs[1] = &charger->attr_state.attr;
13901191 		charger->attrs[2] = &charger->attr_externally_control.attr;
13911192 		charger->attrs[3] = NULL;
1392
-		charger->attr_g.name = str;
1393
-		charger->attr_g.attrs = charger->attrs;
1193
+
1194
+		charger->attr_grp.name = name;
1195
+		charger->attr_grp.attrs = charger->attrs;
1196
+		desc->sysfs_groups[i] = &charger->attr_grp;
13941197 
13951198 		sysfs_attr_init(&charger->attr_name.attr);
13961199 		charger->attr_name.attr.name = "name";
....@@ -1417,14 +1220,6 @@
14171220 
14181221 		dev_info(cm->dev, "'%s' regulator's externally_control is %d\n",
14191222 			 charger->regulator_name, charger->externally_control);
1420
-
1421
-		ret = sysfs_create_group(&cm->charger_psy->dev.kobj,
1422
-					&charger->attr_g);
1423
-		if (ret < 0) {
1424
-			dev_err(cm->dev, "Cannot create sysfs entry of %s regulator\n",
1425
-				charger->regulator_name);
1426
-			return ret;
1427
-		}
14281223 	}
14291224 
14301225 	if (chargers_externally_control) {
....@@ -1436,7 +1231,9 @@
14361231 }
14371232 
14381233 static int cm_init_thermal_data(struct charger_manager *cm,
1439
-		struct power_supply *fuel_gauge)
1234
+		struct power_supply *fuel_gauge,
1235
+		enum power_supply_property *properties,
1236
+		size_t *num_properties)
14401237 {
14411238 	struct charger_desc *desc = cm->desc;
14421239 	union power_supply_propval val;
....@@ -1447,9 +1244,8 @@
14471244 					POWER_SUPPLY_PROP_TEMP, &val);
14481245 
14491246 	if (!ret) {
1450
-		cm->charger_psy_desc.properties[cm->charger_psy_desc.num_properties] =
1451
-				POWER_SUPPLY_PROP_TEMP;
1452
-		cm->charger_psy_desc.num_properties++;
1247
+		properties[*num_properties] = POWER_SUPPLY_PROP_TEMP;
1248
+		(*num_properties)++;
14531249 		cm->desc->measure_battery_temp = true;
14541250 	}
14551251 #ifdef CONFIG_THERMAL
....@@ -1460,9 +1256,8 @@
14601256 			return PTR_ERR(cm->tzd_batt);
14611257 
14621258 		/* Use external thermometer */
1463
-		cm->charger_psy_desc.properties[cm->charger_psy_desc.num_properties] =
1464
-				POWER_SUPPLY_PROP_TEMP_AMBIENT;
1465
-		cm->charger_psy_desc.num_properties++;
1259
+		properties[*num_properties] = POWER_SUPPLY_PROP_TEMP;
1260
+		(*num_properties)++;
14661261 		cm->desc->measure_battery_temp = true;
14671262 		ret = 0;
14681263 	}
....@@ -1506,8 +1301,6 @@
15061301 	of_property_read_u32(np, "cm-poll-interval",
15071302 				&desc->polling_interval_ms);
15081303 
1509
-	of_property_read_u32(np, "cm-fullbatt-vchkdrop-ms",
1510
-					&desc->fullbatt_vchkdrop_ms);
15111304 	of_property_read_u32(np, "cm-fullbatt-vchkdrop-volt",
15121305 					&desc->fullbatt_vchkdrop_uV);
15131306 	of_property_read_u32(np, "cm-fullbatt-voltage", &desc->fullbatt_uV);
....@@ -1519,21 +1312,21 @@
15191312 	desc->battery_present = battery_stat;
15201313 
15211314 	/* chargers */
1522
-	of_property_read_u32(np, "cm-num-chargers", &num_chgs);
1523
-	if (num_chgs) {
1315
+	num_chgs = of_property_count_strings(np, "cm-chargers");
1316
+	if (num_chgs > 0) {
1317
+		int i;
1318
+
15241319 		/* Allocate empty bin at the tail of array */
15251320 		desc->psy_charger_stat = devm_kcalloc(dev,
15261321 						      num_chgs + 1,
15271322 						      sizeof(char *),
15281323 						      GFP_KERNEL);
1529
-		if (desc->psy_charger_stat) {
1530
-			int i;
1531
-			for (i = 0; i < num_chgs; i++)
1532
-				of_property_read_string_index(np, "cm-chargers",
1533
-						i, &desc->psy_charger_stat[i]);
1534
-		} else {
1324
+		if (!desc->psy_charger_stat)
15351325 			return ERR_PTR(-ENOMEM);
1536
-		}
1326
+
1327
+		for (i = 0; i < num_chgs; i++)
1328
+			of_property_read_string_index(np, "cm-chargers",
1329
+						      i, &desc->psy_charger_stat[i]);
15371330 	}
15381331 
15391332 	of_property_read_string(np, "cm-fuel-gauge", &desc->psy_fuel_gauge);
....@@ -1551,7 +1344,7 @@
15511344 	of_property_read_u32(np, "cm-discharging-max",
15521345 				&desc->discharging_max_duration_ms);
15531346 
1554
-	/* battery charger regualtors */
1347
+	/* battery charger regulators */
15551348 	desc->num_charger_regulators = of_get_child_count(np);
15561349 	if (desc->num_charger_regulators) {
15571350 		struct charger_regulator *chg_regs;
....@@ -1565,6 +1358,13 @@
15651358 			return ERR_PTR(-ENOMEM);
15661359 
15671360 		desc->charger_regulators = chg_regs;
1361
+
1362
+		desc->sysfs_groups = devm_kcalloc(dev,
1363
+					desc->num_charger_regulators + 1,
1364
+					sizeof(*desc->sysfs_groups),
1365
+					GFP_KERNEL);
1366
+		if (!desc->sysfs_groups)
1367
+			return ERR_PTR(-ENOMEM);
15681368 
15691369 		for_each_child_of_node(np, child) {
15701370 			struct charger_cable *cables;
....@@ -1626,9 +1426,10 @@
16261426 	struct charger_desc *desc = cm_get_drv_data(pdev);
16271427 	struct charger_manager *cm;
16281428 	int ret, i = 0;
1629
-	int j = 0;
16301429 	union power_supply_propval val;
16311430 	struct power_supply *fuel_gauge;
1431
+	enum power_supply_property *properties;
1432
+	size_t num_properties;
16321433 	struct power_supply_config psy_cfg = {};
16331434 
16341435 	if (IS_ERR(desc)) {
....@@ -1660,9 +1461,8 @@
16601461 	if (desc->fullbatt_uV == 0) {
16611462 		dev_info(&pdev->dev, "Ignoring full-battery voltage threshold as it is not supplied\n");
16621463 	}
1663
-	if (!desc->fullbatt_vchkdrop_ms || !desc->fullbatt_vchkdrop_uV) {
1464
+	if (!desc->fullbatt_vchkdrop_uV) {
16641465 		dev_info(&pdev->dev, "Disabling full-battery voltage drop checking mechanism as it is not supplied\n");
1665
-		desc->fullbatt_vchkdrop_ms = 0;
16661466 		desc->fullbatt_vchkdrop_uV = 0;
16671467 	}
16681468 	if (desc->fullbatt_soc == 0) {
....@@ -1686,10 +1486,6 @@
16861486 		dev_err(&pdev->dev, "No fuel gauge power supply defined\n");
16871487 		return -EINVAL;
16881488 	}
1689
-
1690
-	/* Counting index only */
1691
-	while (desc->psy_charger_stat[i])
1692
-		i++;
16931489 
16941490 	/* Check if charger's supplies are present at probe */
16951491 	for (i = 0; desc->psy_charger_stat[i]; i++) {
....@@ -1729,18 +1525,17 @@
17291525 	cm->charger_psy_desc.name = cm->psy_name_buf;
17301526 
17311527 	/* Allocate for psy properties because they may vary */
1732
-	cm->charger_psy_desc.properties =
1733
-		devm_kcalloc(&pdev->dev,
1528
+	properties = devm_kcalloc(&pdev->dev,
17341529 			     ARRAY_SIZE(default_charger_props) +
17351530 				NUM_CHARGER_PSY_OPTIONAL,
1736
-			     sizeof(enum power_supply_property), GFP_KERNEL);
1737
-	if (!cm->charger_psy_desc.properties)
1531
+			     sizeof(*properties), GFP_KERNEL);
1532
+	if (!properties)
17381533 		return -ENOMEM;
17391534 
1740
-	memcpy(cm->charger_psy_desc.properties, default_charger_props,
1535
+	memcpy(properties, default_charger_props,
17411536 		sizeof(enum power_supply_property) *
17421537 		ARRAY_SIZE(default_charger_props));
1743
-	cm->charger_psy_desc.num_properties = psy_default.num_properties;
1538
+	num_properties = ARRAY_SIZE(default_charger_props);
17441539 
17451540 	/* Find which optional psy-properties are available */
17461541 	fuel_gauge = power_supply_get_by_name(desc->psy_fuel_gauge);
....@@ -1750,27 +1545,43 @@
17501545 		return -ENODEV;
17511546 	}
17521547 	if (!power_supply_get_property(fuel_gauge,
1548
+					POWER_SUPPLY_PROP_CHARGE_FULL, &val)) {
1549
+		properties[num_properties] =
1550
+				POWER_SUPPLY_PROP_CHARGE_FULL;
1551
+		num_properties++;
1552
+	}
1553
+	if (!power_supply_get_property(fuel_gauge,
17531554 					  POWER_SUPPLY_PROP_CHARGE_NOW, &val)) {
1754
-		cm->charger_psy_desc.properties[cm->charger_psy_desc.num_properties] =
1555
+		properties[num_properties] =
17551556 				POWER_SUPPLY_PROP_CHARGE_NOW;
1756
-		cm->charger_psy_desc.num_properties++;
1557
+		num_properties++;
17571558 	}
17581559 	if (!power_supply_get_property(fuel_gauge,
17591560 					  POWER_SUPPLY_PROP_CURRENT_NOW,
17601561 					  &val)) {
1761
-		cm->charger_psy_desc.properties[cm->charger_psy_desc.num_properties] =
1562
+		properties[num_properties] =
17621563 				POWER_SUPPLY_PROP_CURRENT_NOW;
1763
-		cm->charger_psy_desc.num_properties++;
1564
+		num_properties++;
17641565 	}
17651566 
1766
-	ret = cm_init_thermal_data(cm, fuel_gauge);
1567
+	ret = cm_init_thermal_data(cm, fuel_gauge, properties, &num_properties);
17671568 	if (ret) {
17681569 		dev_err(&pdev->dev, "Failed to initialize thermal data\n");
17691570 		cm->desc->measure_battery_temp = false;
17701571 	}
17711572 	power_supply_put(fuel_gauge);
17721573 
1773
-	INIT_DELAYED_WORK(&cm->fullbatt_vchk_work, fullbatt_vchk);
1574
+	cm->charger_psy_desc.properties = properties;
1575
+	cm->charger_psy_desc.num_properties = num_properties;
1576
+
1577
+	/* Register sysfs entry for charger(regulator) */
1578
+	ret = charger_manager_prepare_sysfs(cm);
1579
+	if (ret < 0) {
1580
+		dev_err(&pdev->dev,
1581
+			"Cannot prepare sysfs entry of regulators\n");
1582
+		return ret;
1583
+	}
1584
+	psy_cfg.attr_grp = desc->sysfs_groups;
17741585 
17751586 	cm->charger_psy = power_supply_register(&pdev->dev,
17761587 						&cm->charger_psy_desc,
....@@ -1788,14 +1599,6 @@
17881599 		goto err_reg_extcon;
17891600 	}
17901601 
1791
-	/* Register sysfs entry for charger(regulator) */
1792
-	ret = charger_manager_register_sysfs(cm);
1793
-	if (ret < 0) {
1794
-		dev_err(&pdev->dev,
1795
-			"Cannot initialize sysfs entry of regulator\n");
1796
-		goto err_reg_sysfs;
1797
-	}
1798
-
17991602 	/* Add to the list */
18001603 	mutex_lock(&cm_list_mtx);
18011604 	list_add(&cm->entry, &cm_list);
....@@ -1803,14 +1606,14 @@
18031606 
18041607 	/*
18051608 	 * Charger-manager is capable of waking up the systme from sleep
1806
-	 * when event is happend through cm_notify_event()
1609
+	 * when event is happened through cm_notify_event()
18071610 	 */
18081611 	device_init_wakeup(&pdev->dev, true);
18091612 	device_set_wakeup_capable(&pdev->dev, false);
18101613 
18111614 	/*
18121615 	 * Charger-manager have to check the charging state right after
1813
-	 * tialization of charger-manager and then update current charging
1616
+	 * initialization of charger-manager and then update current charging
18141617 	 * state.
18151618 	 */
18161619 	cm_monitor();
....@@ -1819,28 +1622,9 @@
18191622 
18201623 	return 0;
18211624 
1822
-err_reg_sysfs:
1823
-	for (i = 0; i < desc->num_charger_regulators; i++) {
1824
-		struct charger_regulator *charger;
1825
-
1826
-		charger = &desc->charger_regulators[i];
1827
-		sysfs_remove_group(&cm->charger_psy->dev.kobj,
1828
-				&charger->attr_g);
1829
-	}
18301625 err_reg_extcon:
1831
-	for (i = 0; i < desc->num_charger_regulators; i++) {
1832
-		struct charger_regulator *charger;
1833
-
1834
-		charger = &desc->charger_regulators[i];
1835
-		for (j = 0; j < charger->num_cables; j++) {
1836
-			struct charger_cable *cable = &charger->cables[j];
1837
-			/* Remove notifier block if only edev exists */
1838
-			if (cable->extcon_dev.edev)
1839
-				extcon_unregister_interest(&cable->extcon_dev);
1840
-		}
1841
-
1626
+	for (i = 0; i < desc->num_charger_regulators; i++)
18421627 		regulator_put(desc->charger_regulators[i].consumer);
1843
-	}
18441628 
18451629 	power_supply_unregister(cm->charger_psy);
18461630 
....@@ -1852,7 +1636,6 @@
18521636 	struct charger_manager *cm = platform_get_drvdata(pdev);
18531637 	struct charger_desc *desc = cm->desc;
18541638 	int i = 0;
1855
-	int j = 0;
18561639 
18571640 	/* Remove from the list */
18581641 	mutex_lock(&cm_list_mtx);
....@@ -1861,15 +1644,6 @@
18611644 
18621645 	cancel_work_sync(&setup_polling);
18631646 	cancel_delayed_work_sync(&cm_monitor_work);
1864
-
1865
-	for (i = 0 ; i < desc->num_charger_regulators ; i++) {
1866
-		struct charger_regulator *charger
1867
-				= &desc->charger_regulators[i];
1868
-		for (j = 0 ; j < charger->num_cables ; j++) {
1869
-			struct charger_cable *cable = &charger->cables[j];
1870
-			extcon_unregister_interest(&cable->extcon_dev);
1871
-		}
1872
-	}
18731647 
18741648 	for (i = 0 ; i < desc->num_charger_regulators ; i++)
18751649 		regulator_put(desc->charger_regulators[i].consumer);
....@@ -1918,8 +1692,6 @@
19181692 
19191693 static int cm_suspend_prepare(struct device *dev)
19201694 {
1921
-	struct charger_manager *cm = dev_get_drvdata(dev);
1922
-
19231695 	if (cm_need_to_awake())
19241696 		return -EBUSY;
19251697 
....@@ -1931,7 +1703,6 @@
19311703 	if (cm_timer_set) {
19321704 		cancel_work_sync(&setup_polling);
19331705 		cancel_delayed_work_sync(&cm_monitor_work);
1934
-		cancel_delayed_work(&cm->fullbatt_vchk_work);
19351706 	}
19361707 
19371708 	return 0;
....@@ -1956,31 +1727,6 @@
19561727 
19571728 	_cm_monitor(cm);
19581729 
1959
-	/* Re-enqueue delayed work (fullbatt_vchk_work) */
1960
-	if (cm->fullbatt_vchk_jiffies_at) {
1961
-		unsigned long delay = 0;
1962
-		unsigned long now = jiffies + CM_JIFFIES_SMALL;
1963
-
1964
-		if (time_after_eq(now, cm->fullbatt_vchk_jiffies_at)) {
1965
-			delay = (unsigned long)((long)now
1966
-				- (long)(cm->fullbatt_vchk_jiffies_at));
1967
-			delay = jiffies_to_msecs(delay);
1968
-		} else {
1969
-			delay = 0;
1970
-		}
1971
-
1972
-		/*
1973
-		 * Account for cm_suspend_duration_ms with assuming that
1974
-		 * timer stops in suspend.
1975
-		 */
1976
-		if (delay > cm_suspend_duration_ms)
1977
-			delay -= cm_suspend_duration_ms;
1978
-		else
1979
-			delay = 0;
1980
-
1981
-		queue_delayed_work(cm_wq, &cm->fullbatt_vchk_work,
1982
-				   msecs_to_jiffies(delay));
1983
-	}
19841730 	device_set_wakeup_capable(cm->dev, false);
19851731 }
19861732 
....@@ -2004,6 +1750,9 @@
20041750 static int __init charger_manager_init(void)
20051751 {
20061752 	cm_wq = create_freezable_workqueue("charger_manager");
1753
+	if (unlikely(!cm_wq))
1754
+		return -ENOMEM;
1755
+
20071756 	INIT_DELAYED_WORK(&cm_monitor_work, cm_monitor_poller);
20081757 
20091758 	return platform_driver_register(&charger_manager_driver);
....@@ -2018,56 +1767,6 @@
20181767 	platform_driver_unregister(&charger_manager_driver);
20191768 }
20201769 module_exit(charger_manager_cleanup);
2021
-
2022
-/**
2023
- * cm_notify_event - charger driver notify Charger Manager of charger event
2024
- * @psy: pointer to instance of charger's power_supply
2025
- * @type: type of charger event
2026
- * @msg: optional message passed to uevent_notify fuction
2027
- */
2028
-void cm_notify_event(struct power_supply *psy, enum cm_event_types type,
2029
-		     char *msg)
2030
-{
2031
-	struct charger_manager *cm;
2032
-	bool found_power_supply = false;
2033
-
2034
-	if (psy == NULL)
2035
-		return;
2036
-
2037
-	mutex_lock(&cm_list_mtx);
2038
-	list_for_each_entry(cm, &cm_list, entry) {
2039
-		if (match_string(cm->desc->psy_charger_stat, -1,
2040
-				 psy->desc->name) >= 0) {
2041
-			found_power_supply = true;
2042
-			break;
2043
-		}
2044
-	}
2045
-	mutex_unlock(&cm_list_mtx);
2046
-
2047
-	if (!found_power_supply)
2048
-		return;
2049
-
2050
-	switch (type) {
2051
-	case CM_EVENT_BATT_FULL:
2052
-		fullbatt_handler(cm);
2053
-		break;
2054
-	case CM_EVENT_BATT_OUT:
2055
-		battout_handler(cm);
2056
-		break;
2057
-	case CM_EVENT_BATT_IN:
2058
-	case CM_EVENT_EXT_PWR_IN_OUT ... CM_EVENT_CHG_START_STOP:
2059
-		misc_event_handler(cm, type);
2060
-		break;
2061
-	case CM_EVENT_UNKNOWN:
2062
-	case CM_EVENT_OTHERS:
2063
-		uevent_notify(cm, msg ? msg : default_event_names[type]);
2064
-		break;
2065
-	default:
2066
-		dev_err(cm->dev, "%s: type not specified\n", __func__);
2067
-		break;
2068
-	}
2069
-}
2070
-EXPORT_SYMBOL_GPL(cm_notify_event);
20711770 
20721771 MODULE_AUTHOR("MyungJoo Ham <myungjoo.ham@samsung.com>");
20731772 MODULE_DESCRIPTION("Charger Manager");