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power: supply: max17042_battery: Keep only critical alerts during suspend

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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>
This commit is contained in:
Vincent Cloutier
2026-04-06 16:57:53 -04:00
committed by Sebastian Reichel
parent 6649d933f5
commit 601885ffb5
1 changed files with 13 additions and 2 deletions
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15
drivers/power/supply/max17042_battery.c
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@@ -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;