From: Ladislav Michl <ladis@linux-mips.org>
Date: Thu, 22 Feb 2018 17:21:36 +0000 (+0100)
Subject: power: supply: ltc2941-battery-gauge: Fix temperature units
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=13b520688d2c84e6691203a40f3fcef212845494;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

power: supply: ltc2941-battery-gauge: Fix temperature units

[ Upstream commit dde5953f05a89eb63a0d666ffe51d447b2ac3e05 ]

Temperature is measured in tenths of degree Celsius.

Fixes: 085bc24d1553 ("Add LTC2941/LTC2943 Battery Gauge Driver")
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/power/supply/ltc2941-battery-gauge.c b/drivers/power/supply/ltc2941-battery-gauge.c
index 08e4fd9ee607..9621d6dd88c6 100644
--- a/drivers/power/supply/ltc2941-battery-gauge.c
+++ b/drivers/power/supply/ltc2941-battery-gauge.c
@@ -316,15 +316,15 @@ static int ltc294x_get_temperature(const struct ltc294x_info *info, int *val)
 
 	if (info->id == LTC2942_ID) {
 		reg = LTC2942_REG_TEMPERATURE_MSB;
-		value = 60000;	/* Full-scale is 600 Kelvin */
+		value = 6000;	/* Full-scale is 600 Kelvin */
 	} else {
 		reg = LTC2943_REG_TEMPERATURE_MSB;
-		value = 51000;	/* Full-scale is 510 Kelvin */
+		value = 5100;	/* Full-scale is 510 Kelvin */
 	}
 	ret = ltc294x_read_regs(info->client, reg, &datar[0], 2);
 	value *= (datar[0] << 8) | datar[1];
-	/* Convert to centidegrees  */
-	*val = value / 0xFFFF - 27215;
+	/* Convert to tenths of degree Celsius */
+	*val = value / 0xFFFF - 2722;
 	return ret;
 }