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| author | Vincent Cloutier <vincent@cloutier.co> | 2026-04-06 16:57:53 -0400 |
|---|---|---|
| committer | Sebastian Reichel <sebastian.reichel@collabora.com> | 2026-06-03 21:30:45 +0200 |
| commit | 601885ffb5e9a0fd30c40a6c8cffeed2a04d695e (patch) | |
| tree | 90a2e7c2045103c5619930b3b068bbf0baf31fbf | |
| parent | 6649d933f5b91284750b4ab98ca3c7035e4f04ee (diff) | |
| download | lwn-601885ffb5e9a0fd30c40a6c8cffeed2a04d695e.tar.gz lwn-601885ffb5e9a0fd30c40a6c8cffeed2a04d695e.zip | |
power: supply: max17042_battery: Keep only critical alerts during suspend
Disable MAX17055 dSOCi while the system is suspended so state-of-charge changes do not wake the system repeatedly. Leave SALRT armed for the critical low-battery threshold and restore runtime alert handling on resume.
Signed-off-by: Vincent Cloutier <vincent@cloutier.co>
Link: https://patch.msgid.link/20260406205759.493288-6-vincent.cloutier@icloud.com
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
| -rw-r--r-- | drivers/power/supply/max17042_battery.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/power/supply/max17042_battery.c b/drivers/power/supply/max17042_battery.c index d05202974a71..2110b87bdc4b 100644 --- a/drivers/power/supply/max17042_battery.c +++ b/drivers/power/supply/max17042_battery.c @@ -935,6 +935,16 @@ static void max17042_enable_soc_alerts(struct max17042_chip *chip) max17042_set_soc_threshold(chip, 1); } +static void max17042_suspend_soc_alerts(struct max17042_chip *chip) +{ + if (chip->chip_type != MAXIM_DEVICE_TYPE_MAX17055) + return; + + regmap_update_bits(chip->regmap, MAX17055_Config2, + CFG2_DSOCI_BIT_ENBL, 0); + max17042_set_critical_soc_threshold(chip); +} + static irqreturn_t max17042_thread_handler(int id, void *dev) { struct max17042_chip *chip = dev; @@ -1310,6 +1320,7 @@ static int max17042_suspend(struct device *dev) */ if (chip->irq) { disable_irq(chip->irq); + max17042_suspend_soc_alerts(chip); enable_irq_wake(chip->irq); } @@ -1323,8 +1334,8 @@ static int max17042_resume(struct device *dev) if (chip->irq) { disable_irq_wake(chip->irq); enable_irq(chip->irq); - /* re-program the SOC thresholds to 1% change */ - max17042_set_soc_threshold(chip, 1); + /* re-arm runtime SOC alerts */ + max17042_enable_soc_alerts(chip); } return 0; |