linux-kernel - [PATCH 10/14] power: supply: bq25890: use proper CURRENT_NOW property for I

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <2d7728cc62804d0773254337aae8eed9905786b3.1585838679.git.mirq-linux@rere.qmqm.pl>
Date:   Thu, 02 Apr 2020 16:58:34 +0200
From:   Michał Mirosław <mirq-linux@...e.qmqm.pl>
To:     Sebastian Reichel <sre@...nel.org>
Cc:     linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org
Subject: [PATCH 10/14] power: supply: bq25890: use proper CURRENT_NOW property
 for I_BAT

Charge Current is more apropriately reflected by CURRENT_NOW property
(measured current) than CONSTANT_CURRENT_VOLTAGE (configured CC-phase
current limit). Fix the reference and make the sign reflect direction
of the current.

Signed-off-by: Michał Mirosław <mirq-linux@...e.qmqm.pl>
---
 drivers/power/supply/bq25890_charger.c | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/drivers/power/supply/bq25890_charger.c b/drivers/power/supply/bq25890_charger.c
index 87c5832e23d3..250468f3ff18 100644
--- a/drivers/power/supply/bq25890_charger.c
+++ b/drivers/power/supply/bq25890_charger.c
@@ -468,15 +468,6 @@ static int bq25890_power_supply_get_property(struct power_supply *psy,
 			val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
 		break;
 
-	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
-		ret = bq25890_field_read(bq, F_ICHGR); /* read measured value */
-		if (ret < 0)
-			return ret;
-
-		/* converted_val = ADC_val * 50mA (table 10.3.19) */
-		val->intval = ret * 50000;
-		break;
-
 	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX:
 		val->intval = bq25890_find_val(bq->init_data.ichg, TBL_ICHG);
 		break;
@@ -524,6 +515,15 @@ static int bq25890_power_supply_get_property(struct power_supply *psy,
 		val->intval = 2304000 + ret * 20000;
 		break;
 
+	case POWER_SUPPLY_PROP_CURRENT_NOW:
+		ret = bq25890_field_read(bq, F_ICHGR); /* read measured value */
+		if (ret < 0)
+			return ret;
+
+		/* converted_val = ADC_val * 50mA (table 10.3.19) */
+		val->intval = ret * -50000;
+		break;
+
 	default:
 		return -EINVAL;
 	}
@@ -699,7 +699,6 @@ static const enum power_supply_property bq25890_power_supply_props[] = {
 	POWER_SUPPLY_PROP_CHARGE_TYPE,
 	POWER_SUPPLY_PROP_ONLINE,
 	POWER_SUPPLY_PROP_HEALTH,
-	POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT,
 	POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX,
 	POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
 	POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX,
@@ -707,6 +706,7 @@ static const enum power_supply_property bq25890_power_supply_props[] = {
 	POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT,
 	POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
 	POWER_SUPPLY_PROP_VOLTAGE_NOW,
+	POWER_SUPPLY_PROP_CURRENT_NOW,
 };
 
 static char *bq25890_charger_supplied_to[] = {
-- 
2.20.1