summaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
authorJonathan Bakker <xc-racer2@live.ca>2020-05-05 01:12:58 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2020-10-01 14:12:43 +0300
commit14a4b1f445e5967da399e55f07d58e14211a24a9 (patch)
treefe0ca59a095ad4d0581b57d44aebc150b0107dee /drivers
parent202e92689d7b747918d1637fa767f915606d578c (diff)
downloadlinux-14a4b1f445e5967da399e55f07d58e14211a24a9.tar.xz
power: supply: max17040: Correct voltage reading
[ Upstream commit 0383024f811aa469df258039807810fc3793a105 ] According to the datasheet available at (1), the bottom four bits are always zero and the actual voltage is 1.25x this value in mV. Since the kernel API specifies that voltages should be in uV, it should report 1250x the shifted value. 1) https://datasheets.maximintegrated.com/en/ds/MAX17040-MAX17041.pdf Signed-off-by: Jonathan Bakker <xc-racer2@live.ca> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/power/supply/max17040_battery.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/power/supply/max17040_battery.c b/drivers/power/supply/max17040_battery.c
index 33c40f79d23d..2c35c13ad546 100644
--- a/drivers/power/supply/max17040_battery.c
+++ b/drivers/power/supply/max17040_battery.c
@@ -109,7 +109,7 @@ static void max17040_get_vcell(struct i2c_client *client)
vcell = max17040_read_reg(client, MAX17040_VCELL);
- chip->vcell = vcell;
+ chip->vcell = (vcell >> 4) * 1250;
}
static void max17040_get_soc(struct i2c_client *client)