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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/drivers/power/supply/max8998_charger.c
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..
@@ -1,23 +1,9 @@
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-/*
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- * max8998_charger.c - Power supply consumer driver for the Maxim 8998/LP3974
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- *
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- *  Copyright (C) 2009-2010 Samsung Electronics
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- *  MyungJoo Ham <myungjoo.ham@samsung.com>
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License as published by
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- * the Free Software Foundation; either version 2 of the License, or
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- * (at your option) any later version.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for more details.
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- *
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- * You should have received a copy of the GNU General Public License
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- * along with this program; if not, write to the Free Software
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- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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- */
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+// SPDX-License-Identifier: GPL-2.0+
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+//
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+// max8998_charger.c - Power supply consumer driver for the Maxim 8998/LP3974
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+//
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+//  Copyright (C) 2009-2010 Samsung Electronics
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+//  MyungJoo Ham <myungjoo.ham@samsung.com>
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7
 
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 #include <linux/err.h>
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 #include <linux/module.h>
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@@ -37,6 +23,7 @@
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 static enum power_supply_property max8998_battery_props[] = {
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 	POWER_SUPPLY_PROP_PRESENT, /* the presence of battery */
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 	POWER_SUPPLY_PROP_ONLINE, /* charger is active or not */
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+	POWER_SUPPLY_PROP_STATUS, /* charger is charging/discharging/full */
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 };
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28
 
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 /* Note that the charger control is done by a current regulator "CHARGER" */
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@@ -63,10 +50,28 @@
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 		ret = max8998_read_reg(i2c, MAX8998_REG_STATUS2, &reg);
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 		if (ret)
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 			return ret;
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-		if (reg & (1 << 3))
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-			val->intval = 0;
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-		else
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+
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+		if (reg & (1 << 5))
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 			val->intval = 1;
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+		else
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+			val->intval = 0;
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+
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+		break;
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+	case POWER_SUPPLY_PROP_STATUS:
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+		ret = max8998_read_reg(i2c, MAX8998_REG_STATUS2, &reg);
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+		if (ret)
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+			return ret;
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+
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+		if (!(reg & (1 << 5))) {
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+			val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
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+		} else {
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+			if (reg & (1 << 6))
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+				val->intval = POWER_SUPPLY_STATUS_FULL;
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+			else if (reg & (1 << 3))
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+				val->intval = POWER_SUPPLY_STATUS_CHARGING;
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+			else
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+				val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
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+		}
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 		break;
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 	default:
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 		return -EINVAL;