1 // SPDX-License-Identifier: GPL-2.0-only
7  * during suspend-to-mem.
8  * Charger manager depends on other devices. Register this later than
23 #include <linux/power/charger-manager.h>
36 	{ "USB-HOST", EXTCON_USB_HOST },
41 	{ "FAST-CHARGER", EXTCON_CHG_USB_FAST },
42 	{ "SLOW-CHARGER", EXTCON_CHG_USB_SLOW },
50 	{ "CHARGE-DOWNSTREAM", EXTCON_CHG_USB_CDP },
79 /* About in-suspend (suspend-again) monitoring */
93  * is_batt_present - See if the battery presents in place.
94  * @cm: the Charger Manager representing the battery.
103 	switch (cm->desc->battery_present) {  in is_batt_present()
110 		psy = power_supply_get_by_name(cm->desc->psy_fuel_gauge);  in is_batt_present()
121 		for (i = 0; cm->desc->psy_charger_stat[i]; i++) {  in is_batt_present()
123 					cm->desc->psy_charger_stat[i]);  in is_batt_present()
125 				dev_err(cm->dev, "Cannot find power supply \"%s\"\n",  in is_batt_present()
126 					cm->desc->psy_charger_stat[i]);  in is_batt_present()
145  * is_ext_pwr_online - See if an external power source is attached to charge
146  * @cm: the Charger Manager representing the battery.
149  * power source attached to charge the battery regardless of whether it is
160 	for (i = 0; cm->desc->psy_charger_stat[i]; i++) {  in is_ext_pwr_online()
161 		psy = power_supply_get_by_name(cm->desc->psy_charger_stat[i]);  in is_ext_pwr_online()
163 			dev_err(cm->dev, "Cannot find power supply \"%s\"\n",  in is_ext_pwr_online()
164 					cm->desc->psy_charger_stat[i]);  in is_ext_pwr_online()
181  * get_batt_uV - Get the voltage level of the battery
182  * @cm: the Charger Manager representing the battery.
194 	fuel_gauge = power_supply_get_by_name(cm->desc->psy_fuel_gauge);  in get_batt_uV()
196 		return -ENODEV;  in get_batt_uV()
209  * is_charging - Returns true if the battery is being charged.
210  * @cm: the Charger Manager representing the battery.
224 	for (i = 0; cm->desc->psy_charger_stat[i]; i++) {  in is_charging()
226 		if (cm->emergency_stop)  in is_charging()
228 		if (!cm->charger_enabled)  in is_charging()
231 		psy = power_supply_get_by_name(cm->desc->psy_charger_stat[i]);  in is_charging()
233 			dev_err(cm->dev, "Cannot find power supply \"%s\"\n",  in is_charging()
234 					cm->desc->psy_charger_stat[i]);  in is_charging()
238 		/* 2. The charger should be online (ext-power) */  in is_charging()
242 			dev_warn(cm->dev, "Cannot read ONLINE value from %s\n",  in is_charging()
243 				 cm->desc->psy_charger_stat[i]);  in is_charging()
260 			dev_warn(cm->dev, "Cannot read STATUS value from %s\n",  in is_charging()
261 				 cm->desc->psy_charger_stat[i]);  in is_charging()
278  * is_full_charged - Returns true if the battery is fully charged.
279  * @cm: the Charger Manager representing the battery.
283 	struct charger_desc *desc = cm->desc;  in is_full_charged()
294 	fuel_gauge = power_supply_get_by_name(cm->desc->psy_fuel_gauge);  in is_full_charged()
299 	if (desc->fullbatt_uV > 0) {  in is_full_charged()
303 			if (cm->battery_status == POWER_SUPPLY_STATUS_FULL  in is_full_charged()
304 					&& desc->fullbatt_vchkdrop_uV)  in is_full_charged()
305 				uV += desc->fullbatt_vchkdrop_uV;  in is_full_charged()
306 			if (uV >= desc->fullbatt_uV)  in is_full_charged()
311 	if (desc->fullbatt_full_capacity > 0) {  in is_full_charged()
317 		if (!ret && val.intval > desc->fullbatt_full_capacity) {  in is_full_charged()
324 	if (desc->fullbatt_soc > 0) {  in is_full_charged()
329 		if (!ret && val.intval >= desc->fullbatt_soc) {  in is_full_charged()
341  * is_polling_required - Return true if need to continue polling for this CM.
342  * @cm: the Charger Manager representing the battery.
346 	switch (cm->desc->polling_mode) {  in is_polling_required()
356 		dev_warn(cm->dev, "Incorrect polling_mode (%d)\n",  in is_polling_required()
357 			 cm->desc->polling_mode);  in is_polling_required()
364  * try_charger_enable - Enable/Disable chargers altogether
365  * @cm: the Charger Manager representing the battery.
368  * Note that Charger Manager keeps the charger enabled regardless whether
370  * power source exists) except when CM needs to disable chargers forcibly
376 	struct charger_desc *desc = cm->desc;  in try_charger_enable()
379 	if (enable == cm->charger_enabled)  in try_charger_enable()
383 		if (cm->emergency_stop)  in try_charger_enable()
384 			return -EAGAIN;  in try_charger_enable()
390 		cm->charging_start_time = ktime_to_ms(ktime_get());  in try_charger_enable()
391 		cm->charging_end_time = 0;  in try_charger_enable()
393 		for (i = 0 ; i < desc->num_charger_regulators ; i++) {  in try_charger_enable()
394 			if (desc->charger_regulators[i].externally_control)  in try_charger_enable()
397 			err = regulator_enable(desc->charger_regulators[i].consumer);  in try_charger_enable()
399 				dev_warn(cm->dev, "Cannot enable %s regulator\n",  in try_charger_enable()
400 					 desc->charger_regulators[i].regulator_name);  in try_charger_enable()
406 		 * of battery after full-batt.  in try_charger_enable()
408 		cm->charging_start_time = 0;  in try_charger_enable()
409 		cm->charging_end_time = ktime_to_ms(ktime_get());  in try_charger_enable()
411 		for (i = 0 ; i < desc->num_charger_regulators ; i++) {  in try_charger_enable()
412 			if (desc->charger_regulators[i].externally_control)  in try_charger_enable()
415 			err = regulator_disable(desc->charger_regulators[i].consumer);  in try_charger_enable()
417 				dev_warn(cm->dev, "Cannot disable %s regulator\n",  in try_charger_enable()
418 					 desc->charger_regulators[i].regulator_name);  in try_charger_enable()
423 		 * Abnormal battery state - Stop charging forcibly,  in try_charger_enable()
426 		for (i = 0; i < desc->num_charger_regulators; i++) {  in try_charger_enable()
428 				    desc->charger_regulators[i].consumer)) {  in try_charger_enable()
430 					desc->charger_regulators[i].consumer);  in try_charger_enable()
431 				dev_warn(cm->dev, "Disable regulator(%s) forcibly\n",  in try_charger_enable()
432 					 desc->charger_regulators[i].regulator_name);  in try_charger_enable()
438 		cm->charger_enabled = enable;  in try_charger_enable()
444  * check_charging_duration - Monitor charging/discharging duration
445  * @cm: the Charger Manager representing the battery.
450  * attached, after full-batt, cm start charging to maintain fully
455 	struct charger_desc *desc = cm->desc;  in check_charging_duration()
460 	if (!desc->charging_max_duration_ms &&  in check_charging_duration()
461 			!desc->discharging_max_duration_ms)  in check_charging_duration()
464 	if (cm->charger_enabled) {  in check_charging_duration()
465 		duration = curr - cm->charging_start_time;  in check_charging_duration()
467 		if (duration > desc->charging_max_duration_ms) {  in check_charging_duration()
468 			dev_info(cm->dev, "Charging duration exceed %ums\n",  in check_charging_duration()
469 				 desc->charging_max_duration_ms);  in check_charging_duration()
472 	} else if (cm->battery_status == POWER_SUPPLY_STATUS_NOT_CHARGING) {  in check_charging_duration()
473 		duration = curr - cm->charging_end_time;  in check_charging_duration()
475 		if (duration > desc->discharging_max_duration_ms) {  in check_charging_duration()
476 			dev_info(cm->dev, "Discharging duration exceed %ums\n",  in check_charging_duration()
477 				 desc->discharging_max_duration_ms);  in check_charging_duration()
491 	fuel_gauge = power_supply_get_by_name(cm->desc->psy_fuel_gauge);  in cm_get_battery_temperature_by_psy()
493 		return -ENODEV;  in cm_get_battery_temperature_by_psy()
508 	if (!cm->desc->measure_battery_temp)  in cm_get_battery_temperature()
509 		return -ENODEV;  in cm_get_battery_temperature()
512 	if (cm->tzd_batt) {  in cm_get_battery_temperature()
513 		ret = thermal_zone_get_temp(cm->tzd_batt, temp);  in cm_get_battery_temperature()
520 		/* if-else continued from CONFIG_THERMAL */  in cm_get_battery_temperature()
529 	struct charger_desc *desc = cm->desc;  in cm_check_thermal_status()
540 		dev_err(cm->dev, "Failed to get battery temperature\n");  in cm_check_thermal_status()
544 	upper_limit = desc->temp_max;  in cm_check_thermal_status()
545 	lower_limit = desc->temp_min;  in cm_check_thermal_status()
547 	if (cm->emergency_stop) {  in cm_check_thermal_status()
548 		upper_limit -= desc->temp_diff;  in cm_check_thermal_status()
549 		lower_limit += desc->temp_diff;  in cm_check_thermal_status()
559 	cm->emergency_stop = ret;  in cm_check_thermal_status()
565  * cm_get_target_status - Check current status and get next target status.
566  * @cm: the Charger Manager representing the battery.
580 	switch (cm->battery_status) {  in cm_get_target_status()
600  * _cm_monitor - Monitor the temperature and return true for exceptions.
601  * @cm: the Charger Manager representing the battery.
614 	if (cm->battery_status != target) {  in _cm_monitor()
615 		cm->battery_status = target;  in _cm_monitor()
616 		power_supply_changed(cm->charger_psy);  in _cm_monitor()
619 	return (cm->battery_status == POWER_SUPPLY_STATUS_NOT_CHARGING);  in _cm_monitor()
623  * cm_monitor - Monitor every battery.
646  * _setup_polling - Setup the next instance of polling.
659 		if (is_polling_required(cm) && cm->desc->polling_interval_ms) {  in _setup_polling()
662 			if (min > cm->desc->polling_interval_ms)  in _setup_polling()
663 				min = cm->desc->polling_interval_ms;  in _setup_polling()
676 	WARN(cm_wq == NULL, "charger-manager: workqueue not initialized"  in _setup_polling()
700  * cm_monitor_poller - The Monitor / Poller.
703  * During non-suspended state, cm_monitor_poller is used to poll and monitor
717 	struct charger_desc *desc = cm->desc;  in charger_get_property()
724 		val->intval = cm->battery_status;  in charger_get_property()
727 		if (cm->emergency_stop == CM_BATT_OVERHEAT)  in charger_get_property()
728 			val->intval = POWER_SUPPLY_HEALTH_OVERHEAT;  in charger_get_property()
729 		else if (cm->emergency_stop == CM_BATT_COLD)  in charger_get_property()
730 			val->intval = POWER_SUPPLY_HEALTH_COLD;  in charger_get_property()
732 			val->intval = POWER_SUPPLY_HEALTH_GOOD;  in charger_get_property()
736 			val->intval = 1;  in charger_get_property()
738 			val->intval = 0;  in charger_get_property()
741 		ret = get_batt_uV(cm, &val->intval);  in charger_get_property()
744 		fuel_gauge = power_supply_get_by_name(cm->desc->psy_fuel_gauge);  in charger_get_property()
746 			ret = -ENODEV;  in charger_get_property()
753 		return cm_get_battery_temperature(cm, &val->intval);  in charger_get_property()
757 			val->intval = 100;  in charger_get_property()
761 		fuel_gauge = power_supply_get_by_name(cm->desc->psy_fuel_gauge);  in charger_get_property()
763 			ret = -ENODEV;  in charger_get_property()
772 		if (val->intval > 100) {  in charger_get_property()
773 			val->intval = 100;  in charger_get_property()
776 		if (val->intval < 0)  in charger_get_property()
777 			val->intval = 0;  in charger_get_property()
794 		if (desc->fullbatt_uV > 0 && uV >= desc->fullbatt_uV &&  in charger_get_property()
796 			val->intval = 100;  in charger_get_property()
803 			val->intval = 1;  in charger_get_property()
805 			val->intval = 0;  in charger_get_property()
809 		fuel_gauge = power_supply_get_by_name(cm->desc->psy_fuel_gauge);  in charger_get_property()
811 			ret = -ENODEV;  in charger_get_property()
817 		return -EINVAL;  in charger_get_property()
852  * cm_setup_timer - For in-suspend monitoring setup wakeup alarm
855  * Returns true if the alarm is set for Charger Manager to use.
858  *	cm_setup_timer does not need to set an alarm for Charger Manager,
869 			jiffies_to_msecs(next_polling - jiffies));  in cm_setup_timer()
874 		if (!is_polling_required(cm) && !cm->emergency_stop)  in cm_setup_timer()
877 		if (cm->desc->polling_interval_ms == 0)  in cm_setup_timer()
879 		CM_MIN_VALID(wakeup_ms, cm->desc->polling_interval_ms);  in cm_setup_timer()
894 		pr_info("Charger Manager wakeup timer: %u ms\n", wakeup_ms);  in cm_setup_timer()
909  * charger_extcon_work - enable/diable charger according to the state
920 	if (cable->attached && cable->min_uA != 0 && cable->max_uA != 0) {  in charger_extcon_work()
921 		ret = regulator_set_current_limit(cable->charger->consumer,  in charger_extcon_work()
922 					cable->min_uA, cable->max_uA);  in charger_extcon_work()
925 			       cable->charger->regulator_name, cable->name);  in charger_extcon_work()
930 			cable->charger->regulator_name,  in charger_extcon_work()
931 			cable->min_uA, cable->max_uA);  in charger_extcon_work()
939  * charger_extcon_notifier - receive the state of charger cable
954 	 * If cable is attached, cable->attached is true.  in charger_extcon_notifier()
956 	cable->attached = event;  in charger_extcon_notifier()
962 	schedule_work(&cable->wq);  in charger_extcon_notifier()
968  * charger_extcon_init - register external connector to use it
971  * @cm: the Charger Manager representing the battery.
981 	 * Charger manager use Extcon framework to identify  in charger_extcon_init()
985 	INIT_WORK(&cable->wq, charger_extcon_work);  in charger_extcon_init()
986 	cable->nb.notifier_call = charger_extcon_notifier;  in charger_extcon_init()
988 	cable->extcon_dev = extcon_get_extcon_dev(cable->extcon_name);  in charger_extcon_init()
989 	if (IS_ERR(cable->extcon_dev)) {  in charger_extcon_init()
991 			cable->extcon_name, cable->name);  in charger_extcon_init()
992 		return PTR_ERR(cable->extcon_dev);  in charger_extcon_init()
996 		if (!strcmp(cable->name, extcon_mapping[i].name)) {  in charger_extcon_init()
1002 		pr_err("Cannot find cable for type %s", cable->name);  in charger_extcon_init()
1003 		return -EINVAL;  in charger_extcon_init()
1006 	cable->extcon_type = extcon_type;  in charger_extcon_init()
1008 	ret = devm_extcon_register_notifier(cm->dev, cable->extcon_dev,  in charger_extcon_init()
1009 		cable->extcon_type, &cable->nb);  in charger_extcon_init()
1012 			cable->extcon_name, cable->name);  in charger_extcon_init()
1020  * charger_manager_register_extcon - Register extcon device to receive state
1022  * @cm: the Charger Manager representing the battery.
1031 	struct charger_desc *desc = cm->desc;  in charger_manager_register_extcon()
1038 	for (i = 0; i < desc->num_charger_regulators; i++) {  in charger_manager_register_extcon()
1039 		charger = &desc->charger_regulators[i];  in charger_manager_register_extcon()
1041 		charger->consumer = regulator_get(cm->dev,  in charger_manager_register_extcon()
1042 					charger->regulator_name);  in charger_manager_register_extcon()
1043 		if (IS_ERR(charger->consumer)) {  in charger_manager_register_extcon()
1044 			dev_err(cm->dev, "Cannot find charger(%s)\n",  in charger_manager_register_extcon()
1045 				charger->regulator_name);  in charger_manager_register_extcon()
1046 			return PTR_ERR(charger->consumer);  in charger_manager_register_extcon()
1048 		charger->cm = cm;  in charger_manager_register_extcon()
1050 		for (j = 0; j < charger->num_cables; j++) {  in charger_manager_register_extcon()
1051 			struct charger_cable *cable = &charger->cables[j];  in charger_manager_register_extcon()
1055 				dev_err(cm->dev, "Cannot initialize charger(%s)\n",  in charger_manager_register_extcon()
1056 					charger->regulator_name);  in charger_manager_register_extcon()
1059 			cable->charger = charger;  in charger_manager_register_extcon()
1060 			cable->cm = cm;  in charger_manager_register_extcon()
1062 			event = extcon_get_state(cable->extcon_dev,  in charger_manager_register_extcon()
1063 				cable->extcon_type);  in charger_manager_register_extcon()
1064 			charger_extcon_notifier(&cable->nb,  in charger_manager_register_extcon()
1079 	return sysfs_emit(buf, "%s\n", charger->regulator_name);  in charger_name_show()
1089 	if (!charger->externally_control)  in charger_state_show()
1090 		state = regulator_is_enabled(charger->consumer);  in charger_state_show()
1101 	return sysfs_emit(buf, "%d\n", charger->externally_control);  in charger_externally_control_show()
1111 	struct charger_manager *cm = charger->cm;  in charger_externally_control_store()
1112 	struct charger_desc *desc = cm->desc;  in charger_externally_control_store()
1120 		ret = -EINVAL;  in charger_externally_control_store()
1125 		charger->externally_control = 0;  in charger_externally_control_store()
1129 	for (i = 0; i < desc->num_charger_regulators; i++) {  in charger_externally_control_store()
1130 		if (&desc->charger_regulators[i] != charger &&  in charger_externally_control_store()
1131 			!desc->charger_regulators[i].externally_control) {  in charger_externally_control_store()
1134 			 * charger-manager  in charger_externally_control_store()
1142 		if (cm->charger_enabled) {  in charger_externally_control_store()
1143 			try_charger_enable(charger->cm, false);  in charger_externally_control_store()
1144 			charger->externally_control = externally_control;  in charger_externally_control_store()
1145 			try_charger_enable(charger->cm, true);  in charger_externally_control_store()
1147 			charger->externally_control = externally_control;  in charger_externally_control_store()
1150 		dev_warn(cm->dev,  in charger_externally_control_store()
1151 …"'%s' regulator should be controlled in charger-manager because charger-manager must need at least…  in charger_externally_control_store()
1152 			 charger->regulator_name);  in charger_externally_control_store()
1159  * charger_manager_prepare_sysfs - Prepare sysfs entry for each charger
1160  * @cm: the Charger Manager representing the battery.
1163  * user-space. If some development board use one more chargers for charging
1168  * externally_control, this charger isn't controlled from charger-manager and
1173 	struct charger_desc *desc = cm->desc;  in charger_manager_prepare_sysfs()
1180 	for (i = 0; i < desc->num_charger_regulators; i++) {  in charger_manager_prepare_sysfs()
1181 		charger = &desc->charger_regulators[i];  in charger_manager_prepare_sysfs()
1183 		name = devm_kasprintf(cm->dev, GFP_KERNEL, "charger.%d", i);  in charger_manager_prepare_sysfs()
1185 			return -ENOMEM;  in charger_manager_prepare_sysfs()
1187 		charger->attrs[0] = &charger->attr_name.attr;  in charger_manager_prepare_sysfs()
1188 		charger->attrs[1] = &charger->attr_state.attr;  in charger_manager_prepare_sysfs()
1189 		charger->attrs[2] = &charger->attr_externally_control.attr;  in charger_manager_prepare_sysfs()
1190 		charger->attrs[3] = NULL;  in charger_manager_prepare_sysfs()
1192 		charger->attr_grp.name = name;  in charger_manager_prepare_sysfs()
1193 		charger->attr_grp.attrs = charger->attrs;  in charger_manager_prepare_sysfs()
1194 		desc->sysfs_groups[i] = &charger->attr_grp;  in charger_manager_prepare_sysfs()
1196 		sysfs_attr_init(&charger->attr_name.attr);  in charger_manager_prepare_sysfs()
1197 		charger->attr_name.attr.name = "name";  in charger_manager_prepare_sysfs()
1198 		charger->attr_name.attr.mode = 0444;  in charger_manager_prepare_sysfs()
1199 		charger->attr_name.show = charger_name_show;  in charger_manager_prepare_sysfs()
1201 		sysfs_attr_init(&charger->attr_state.attr);  in charger_manager_prepare_sysfs()
1202 		charger->attr_state.attr.name = "state";  in charger_manager_prepare_sysfs()
1203 		charger->attr_state.attr.mode = 0444;  in charger_manager_prepare_sysfs()
1204 		charger->attr_state.show = charger_state_show;  in charger_manager_prepare_sysfs()
1206 		sysfs_attr_init(&charger->attr_externally_control.attr);  in charger_manager_prepare_sysfs()
1207 		charger->attr_externally_control.attr.name  in charger_manager_prepare_sysfs()
1209 		charger->attr_externally_control.attr.mode = 0644;  in charger_manager_prepare_sysfs()
1210 		charger->attr_externally_control.show  in charger_manager_prepare_sysfs()
1212 		charger->attr_externally_control.store  in charger_manager_prepare_sysfs()
1215 		if (!desc->charger_regulators[i].externally_control ||  in charger_manager_prepare_sysfs()
1219 		dev_info(cm->dev, "'%s' regulator's externally_control is %d\n",  in charger_manager_prepare_sysfs()
1220 			 charger->regulator_name, charger->externally_control);  in charger_manager_prepare_sysfs()
1224 …dev_err(cm->dev, "Cannot register regulator because charger-manager must need at least one charger…  in charger_manager_prepare_sysfs()
1225 		return -EINVAL;  in charger_manager_prepare_sysfs()
1236 	struct charger_desc *desc = cm->desc;  in cm_init_thermal_data()
1247 		cm->desc->measure_battery_temp = true;  in cm_init_thermal_data()
1250 	if (ret && desc->thermal_zone) {  in cm_init_thermal_data()
1251 		cm->tzd_batt =  in cm_init_thermal_data()
1252 			thermal_zone_get_zone_by_name(desc->thermal_zone);  in cm_init_thermal_data()
1253 		if (IS_ERR(cm->tzd_batt))  in cm_init_thermal_data()
1254 			return PTR_ERR(cm->tzd_batt);  in cm_init_thermal_data()
1259 		cm->desc->measure_battery_temp = true;  in cm_init_thermal_data()
1263 	if (cm->desc->measure_battery_temp) {  in cm_init_thermal_data()
1265 		if (!desc->temp_max)  in cm_init_thermal_data()
1266 			desc->temp_max = CM_DEFAULT_CHARGE_TEMP_MAX;  in cm_init_thermal_data()
1267 		if (!desc->temp_diff)  in cm_init_thermal_data()
1268 			desc->temp_diff = CM_DEFAULT_RECHARGE_TEMP_DIFF;  in cm_init_thermal_data()
1276 		.compatible = "charger-manager",
1285 	struct device_node *np = dev->of_node;  in of_cm_parse_desc()
1292 		return ERR_PTR(-ENOMEM);  in of_cm_parse_desc()
1294 	of_property_read_string(np, "cm-name", &desc->psy_name);  in of_cm_parse_desc()
1296 	of_property_read_u32(np, "cm-poll-mode", &poll_mode);  in of_cm_parse_desc()
1297 	desc->polling_mode = poll_mode;  in of_cm_parse_desc()
1299 	of_property_read_u32(np, "cm-poll-interval",  in of_cm_parse_desc()
1300 				&desc->polling_interval_ms);  in of_cm_parse_desc()
1302 	of_property_read_u32(np, "cm-fullbatt-vchkdrop-volt",  in of_cm_parse_desc()
1303 					&desc->fullbatt_vchkdrop_uV);  in of_cm_parse_desc()
1304 	of_property_read_u32(np, "cm-fullbatt-voltage", &desc->fullbatt_uV);  in of_cm_parse_desc()
1305 	of_property_read_u32(np, "cm-fullbatt-soc", &desc->fullbatt_soc);  in of_cm_parse_desc()
1306 	of_property_read_u32(np, "cm-fullbatt-capacity",  in of_cm_parse_desc()
1307 					&desc->fullbatt_full_capacity);  in of_cm_parse_desc()
1309 	of_property_read_u32(np, "cm-battery-stat", &battery_stat);  in of_cm_parse_desc()
1310 	desc->battery_present = battery_stat;  in of_cm_parse_desc()
1313 	num_chgs = of_property_count_strings(np, "cm-chargers");  in of_cm_parse_desc()
1318 		desc->psy_charger_stat = devm_kcalloc(dev,  in of_cm_parse_desc()
1322 		if (!desc->psy_charger_stat)  in of_cm_parse_desc()
1323 			return ERR_PTR(-ENOMEM);  in of_cm_parse_desc()
1326 			of_property_read_string_index(np, "cm-chargers",  in of_cm_parse_desc()
1327 						      i, &desc->psy_charger_stat[i]);  in of_cm_parse_desc()
1330 	of_property_read_string(np, "cm-fuel-gauge", &desc->psy_fuel_gauge);  in of_cm_parse_desc()
1332 	of_property_read_string(np, "cm-thermal-zone", &desc->thermal_zone);  in of_cm_parse_desc()
1334 	of_property_read_u32(np, "cm-battery-cold", &desc->temp_min);  in of_cm_parse_desc()
1335 	if (of_property_read_bool(np, "cm-battery-cold-in-minus"))  in of_cm_parse_desc()
1336 		desc->temp_min *= -1;  in of_cm_parse_desc()
1337 	of_property_read_u32(np, "cm-battery-hot", &desc->temp_max);  in of_cm_parse_desc()
1338 	of_property_read_u32(np, "cm-battery-temp-diff", &desc->temp_diff);  in of_cm_parse_desc()
1340 	of_property_read_u32(np, "cm-charging-max",  in of_cm_parse_desc()
1341 				&desc->charging_max_duration_ms);  in of_cm_parse_desc()
1342 	of_property_read_u32(np, "cm-discharging-max",  in of_cm_parse_desc()
1343 				&desc->discharging_max_duration_ms);  in of_cm_parse_desc()
1346 	desc->num_charger_regulators = of_get_child_count(np);  in of_cm_parse_desc()
1347 	if (desc->num_charger_regulators) {  in of_cm_parse_desc()
1352 					desc->num_charger_regulators,  in of_cm_parse_desc()
1356 			return ERR_PTR(-ENOMEM);  in of_cm_parse_desc()
1358 		desc->charger_regulators = chg_regs;  in of_cm_parse_desc()
1360 		desc->sysfs_groups = devm_kcalloc(dev,  in of_cm_parse_desc()
1361 					desc->num_charger_regulators + 1,  in of_cm_parse_desc()
1362 					sizeof(*desc->sysfs_groups),  in of_cm_parse_desc()
1364 		if (!desc->sysfs_groups)  in of_cm_parse_desc()
1365 			return ERR_PTR(-ENOMEM);  in of_cm_parse_desc()
1371 			of_property_read_string(child, "cm-regulator-name",  in of_cm_parse_desc()
1372 					&chg_regs->regulator_name);  in of_cm_parse_desc()
1375 			chg_regs->num_cables = of_get_child_count(child);  in of_cm_parse_desc()
1376 			if (chg_regs->num_cables) {  in of_cm_parse_desc()
1378 						      chg_regs->num_cables,  in of_cm_parse_desc()
1383 					return ERR_PTR(-ENOMEM);  in of_cm_parse_desc()
1386 				chg_regs->cables = cables;  in of_cm_parse_desc()
1390 					"cm-cable-name", &cables->name);  in of_cm_parse_desc()
1392 					"cm-cable-extcon",  in of_cm_parse_desc()
1393 					&cables->extcon_name);  in of_cm_parse_desc()
1395 					"cm-cable-min",  in of_cm_parse_desc()
1396 					&cables->min_uA);  in of_cm_parse_desc()
1398 					"cm-cable-max",  in of_cm_parse_desc()
1399 					&cables->max_uA);  in of_cm_parse_desc()
1411 	if (pdev->dev.of_node)  in cm_get_drv_data()
1412 		return of_cm_parse_desc(&pdev->dev);  in cm_get_drv_data()
1413 	return dev_get_platdata(&pdev->dev);  in cm_get_drv_data()
1433 		dev_err(&pdev->dev, "No platform data (desc) found\n");  in charger_manager_probe()
1437 	cm = devm_kzalloc(&pdev->dev, sizeof(*cm), GFP_KERNEL);  in charger_manager_probe()
1439 		return -ENOMEM;  in charger_manager_probe()
1442 	cm->dev = &pdev->dev;  in charger_manager_probe()
1443 	cm->desc = desc;  in charger_manager_probe()
1448 		cm_timer = devm_kzalloc(cm->dev, sizeof(*cm_timer), GFP_KERNEL);  in charger_manager_probe()
1450 			return -ENOMEM;  in charger_manager_probe()
1458 	if (desc->fullbatt_uV == 0) {  in charger_manager_probe()
1459 		dev_info(&pdev->dev, "Ignoring full-battery voltage threshold as it is not supplied\n");  in charger_manager_probe()
1461 	if (!desc->fullbatt_vchkdrop_uV) {  in charger_manager_probe()
1462 …dev_info(&pdev->dev, "Disabling full-battery voltage drop checking mechanism as it is not supplied…  in charger_manager_probe()
1463 		desc->fullbatt_vchkdrop_uV = 0;  in charger_manager_probe()
1465 	if (desc->fullbatt_soc == 0) {  in charger_manager_probe()
1466 …dev_info(&pdev->dev, "Ignoring full-battery soc(state of charge) threshold as it is not supplied\n…  in charger_manager_probe()
1468 	if (desc->fullbatt_full_capacity == 0) {  in charger_manager_probe()
1469 		dev_info(&pdev->dev, "Ignoring full-battery full capacity threshold as it is not supplied\n");  in charger_manager_probe()
1472 	if (!desc->charger_regulators || desc->num_charger_regulators < 1) {  in charger_manager_probe()
1473 		dev_err(&pdev->dev, "charger_regulators undefined\n");  in charger_manager_probe()
1474 		return -EINVAL;  in charger_manager_probe()
1477 	if (!desc->psy_charger_stat || !desc->psy_charger_stat[0]) {  in charger_manager_probe()
1478 		dev_err(&pdev->dev, "No power supply defined\n");  in charger_manager_probe()
1479 		return -EINVAL;  in charger_manager_probe()
1482 	if (!desc->psy_fuel_gauge) {  in charger_manager_probe()
1483 		dev_err(&pdev->dev, "No fuel gauge power supply defined\n");  in charger_manager_probe()
1484 		return -EINVAL;  in charger_manager_probe()
1488 	for (i = 0; desc->psy_charger_stat[i]; i++) {  in charger_manager_probe()
1491 		psy = power_supply_get_by_name(desc->psy_charger_stat[i]);  in charger_manager_probe()
1493 			dev_err(&pdev->dev, "Cannot find power supply \"%s\"\n",  in charger_manager_probe()
1494 				desc->psy_charger_stat[i]);  in charger_manager_probe()
1495 			return -ENODEV;  in charger_manager_probe()
1500 	if (cm->desc->polling_mode != CM_POLL_DISABLE &&  in charger_manager_probe()
1501 	    (desc->polling_interval_ms == 0 ||  in charger_manager_probe()
1502 	     msecs_to_jiffies(desc->polling_interval_ms) <= CM_JIFFIES_SMALL)) {  in charger_manager_probe()
1503 		dev_err(&pdev->dev, "polling_interval_ms is too small\n");  in charger_manager_probe()
1504 		return -EINVAL;  in charger_manager_probe()
1507 	if (!desc->charging_max_duration_ms ||  in charger_manager_probe()
1508 			!desc->discharging_max_duration_ms) {  in charger_manager_probe()
1509 …dev_info(&pdev->dev, "Cannot limit charging duration checking mechanism to prevent overcharge/over…  in charger_manager_probe()
1510 		desc->charging_max_duration_ms = 0;  in charger_manager_probe()
1511 		desc->discharging_max_duration_ms = 0;  in charger_manager_probe()
1516 	memcpy(&cm->charger_psy_desc, &psy_default, sizeof(psy_default));  in charger_manager_probe()
1518 	if (!desc->psy_name)  in charger_manager_probe()
1519 		strscpy(cm->psy_name_buf, psy_default.name,  in charger_manager_probe()
1520 			sizeof(cm->psy_name_buf));  in charger_manager_probe()
1522 		strscpy(cm->psy_name_buf, desc->psy_name,  in charger_manager_probe()
1523 			sizeof(cm->psy_name_buf));  in charger_manager_probe()
1524 	cm->charger_psy_desc.name = cm->psy_name_buf;  in charger_manager_probe()
1527 	properties = devm_kcalloc(&pdev->dev,  in charger_manager_probe()
1532 		return -ENOMEM;  in charger_manager_probe()
1539 	/* Find which optional psy-properties are available */  in charger_manager_probe()
1540 	fuel_gauge = power_supply_get_by_name(desc->psy_fuel_gauge);  in charger_manager_probe()
1542 		dev_err(&pdev->dev, "Cannot find power supply \"%s\"\n",  in charger_manager_probe()
1543 			desc->psy_fuel_gauge);  in charger_manager_probe()
1544 		return -ENODEV;  in charger_manager_probe()
1568 		dev_err(&pdev->dev, "Failed to initialize thermal data\n");  in charger_manager_probe()
1569 		cm->desc->measure_battery_temp = false;  in charger_manager_probe()
1573 	cm->charger_psy_desc.properties = properties;  in charger_manager_probe()
1574 	cm->charger_psy_desc.num_properties = num_properties;  in charger_manager_probe()
1579 		dev_err(&pdev->dev,  in charger_manager_probe()
1583 	psy_cfg.attr_grp = desc->sysfs_groups;  in charger_manager_probe()
1585 	cm->charger_psy = power_supply_register(&pdev->dev,  in charger_manager_probe()
1586 						&cm->charger_psy_desc,  in charger_manager_probe()
1588 	if (IS_ERR(cm->charger_psy)) {  in charger_manager_probe()
1589 		dev_err(&pdev->dev, "Cannot register charger-manager with name \"%s\"\n",  in charger_manager_probe()
1590 			cm->charger_psy_desc.name);  in charger_manager_probe()
1591 		return PTR_ERR(cm->charger_psy);  in charger_manager_probe()
1597 		dev_err(&pdev->dev, "Cannot initialize extcon device\n");  in charger_manager_probe()
1603 	list_add(&cm->entry, &cm_list);  in charger_manager_probe()
1607 	 * Charger-manager is capable of waking up the system from sleep  in charger_manager_probe()
1610 	device_init_wakeup(&pdev->dev, true);  in charger_manager_probe()
1611 	device_set_wakeup_capable(&pdev->dev, false);  in charger_manager_probe()
1614 	 * Charger-manager have to check the charging state right after  in charger_manager_probe()
1615 	 * initialization of charger-manager and then update current charging  in charger_manager_probe()
1625 	for (i = 0; i < desc->num_charger_regulators; i++)  in charger_manager_probe()
1626 		regulator_put(desc->charger_regulators[i].consumer);  in charger_manager_probe()
1628 	power_supply_unregister(cm->charger_psy);  in charger_manager_probe()
1636 	struct charger_desc *desc = cm->desc;  in charger_manager_remove()
1641 	list_del(&cm->entry);  in charger_manager_remove()
1647 	for (i = 0 ; i < desc->num_charger_regulators ; i++)  in charger_manager_remove()
1648 		regulator_put(desc->charger_regulators[i].consumer);  in charger_manager_remove()
1650 	power_supply_unregister(cm->charger_psy);  in charger_manager_remove()
1656 	{ "charger-manager", 0 },
1665 		return -EAGAIN;  in cm_suspend_noirq()
1693 		return -EBUSY;  in cm_suspend_prepare()
1721 		cm_suspend_duration_ms -= ktime_to_ms(remain);  in cm_suspend_complete()
1727 	device_set_wakeup_capable(cm->dev, false);  in cm_suspend_complete()
1738 		.name = "charger-manager",
1751 		return -ENOMEM;  in charger_manager_init()
1769 MODULE_DESCRIPTION("Charger Manager");