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authorSebastian Krzyszkowiak <sebastian.krzyszkowiak@puri.sm>2021-09-14 15:18:05 +0300
committerSebastian Reichel <sre@kernel.org>2021-10-12 18:59:05 +0300
commit0cf48167b87e388fa1268c9fe6d2443ae7f43d8a (patch)
treeeb9a2c7cbc33c7742cb8189f71dc52ec7e10e215 /drivers/power
parent7462a894bd53b3d149c01518c82562d20368f960 (diff)
downloadlinux-0cf48167b87e388fa1268c9fe6d2443ae7f43d8a.tar.xz
power: supply: max17042_battery: Clear status bits in interrupt handler
The gauge requires us to clear the status bits manually for some alerts to be properly dismissed. Previously the IRQ was configured to react only on falling edge, which wasn't technically correct (the ALRT line is active low), but it had a happy side-effect of preventing interrupt storms on uncleared alerts from happening. Fixes: 7fbf6b731bca ("power: supply: max17042: Do not enforce (incorrect) interrupt trigger type") Cc: <stable@vger.kernel.org> Signed-off-by: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@puri.sm> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Diffstat (limited to 'drivers/power')
-rw-r--r--drivers/power/supply/max17042_battery.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/power/supply/max17042_battery.c b/drivers/power/supply/max17042_battery.c
index 32f331480487..2eb61856f3e4 100644
--- a/drivers/power/supply/max17042_battery.c
+++ b/drivers/power/supply/max17042_battery.c
@@ -879,6 +879,10 @@ static irqreturn_t max17042_thread_handler(int id, void *dev)
max17042_set_soc_threshold(chip, 1);
}
+ /* we implicitly handle all alerts via power_supply_changed */
+ regmap_clear_bits(chip->regmap, MAX17042_STATUS,
+ 0xFFFF & ~(STATUS_POR_BIT | STATUS_BST_BIT));
+
power_supply_changed(chip->battery);
return IRQ_HANDLED;
}