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regulator: pf9453: Allow shared IRQ 

The PF9453 datasheet specifies the IRQ_B pin as an open drain output
with level-low behavior. This makes it capable to share the interrupt
line. To allow shared interrupts, the driver must handle the case
if the interrupt has been triggered by another device.

Set IRQF_SHARED to be able to share the interrupt line.
If the interrupt has not been triggered by the PMIC, return IRQ_NONE.

Signed-off-by: Franz Schnyder <franz.schnyder@toradex.com>
Link: https://patch.msgid.link/20260302165357.1797803-3-fra.schnyder@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
master
Franz Schnyder 2026-03-02 17:53:56 +01:00 committed by Mark Brown
parent 2d85ecd6fb
commit e84141846d
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1 changed files with 4 additions and 1 deletions
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5
drivers/regulator/pf9453-regulator.c
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@ -732,6 +732,9 @@ static irqreturn_t pf9453_irq_handler(int irq, void *data)
return IRQ_NONE;
}
if (!status)
return IRQ_NONE;
if (status & IRQ_RSTB)
dev_warn(pf9453->dev, "IRQ_RSTB interrupt.\n");
@ -809,7 +812,7 @@ static int pf9453_i2c_probe(struct i2c_client *i2c)
}
ret = devm_request_threaded_irq(pf9453->dev, pf9453->irq, NULL, pf9453_irq_handler,
IRQF_ONESHOT,
(IRQF_ONESHOT | IRQF_SHARED),
"pf9453-irq", pf9453);
if (ret)
return dev_err_probe(pf9453->dev, ret, "Failed to request IRQ: %d\n", pf9453->irq);