From: Andreas Kemnade <andreas@kemnade.info>
Date: Fri, 4 Dec 2020 14:49:50 +0000 (+0100)
Subject: power: supply: bq27xxx: fix polarity of current_now
X-Git-Tag: v5.15~1711^2~7
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=cd060b4d0868c806c2738a5e64e8ab9bd0fbec07;p=platform%2Fkernel%2Flinux-starfive.git

power: supply: bq27xxx: fix polarity of current_now

current_now has to be negative during discharging and positive during
charging, the behavior seen is the other way round.

Tested on GTA04 with Openmoko battery.

Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
---

diff --git a/drivers/power/supply/bq27xxx_battery.c b/drivers/power/supply/bq27xxx_battery.c
index 774aa37..4c4a7b1 100644
--- a/drivers/power/supply/bq27xxx_battery.c
+++ b/drivers/power/supply/bq27xxx_battery.c
@@ -1819,7 +1819,7 @@ static int bq27xxx_battery_current(struct bq27xxx_device_info *di,
 
 	if (di->opts & BQ27XXX_O_ZERO) {
 		flags = bq27xxx_read(di, BQ27XXX_REG_FLAGS, true);
-		if (flags & BQ27000_FLAG_CHGS) {
+		if (!(flags & BQ27000_FLAG_CHGS)) {
 			dev_dbg(di->dev, "negative current!\n");
 			curr = -curr;
 		}
@@ -1827,7 +1827,7 @@ static int bq27xxx_battery_current(struct bq27xxx_device_info *di,
 		val->intval = curr * BQ27XXX_CURRENT_CONSTANT / BQ27XXX_RS;
 	} else {
 		/* Other gauges return signed value */
-		val->intval = (int)((s16)curr) * 1000;
+		val->intval = -(int)((s16)curr) * 1000;
 	}
 
 	return 0;