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PM: sleep: wakeirq: Introduce device-managed variant of dev_pm_set_wake_irq()

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Add device-managed variant of dev_pm_set_wake_irq which automatically
clear the wake irq on device destruction to simplify error handling
and resource management in drivers.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Link: https://patch.msgid.link/20250103-wake_irq-v2-1-e3aeff5e9966@nxp.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Peng Fan 2025-01-03 16:41:13 +08:00 committed by Rafael J. Wysocki
parent 56cabb937f
commit fd8318a325
2 changed files with 32 additions and 0 deletions
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26
drivers/base/power/wakeirq.c
View File

@ -103,6 +103,32 @@ void dev_pm_clear_wake_irq(struct device *dev)
}
EXPORT_SYMBOL_GPL(dev_pm_clear_wake_irq);
static void devm_pm_clear_wake_irq(void *dev)
{
dev_pm_clear_wake_irq(dev);
}
/**
* devm_pm_set_wake_irq - device-managed variant of dev_pm_set_wake_irq
* @dev: Device entry
* @irq: Device IO interrupt
*
*
* Attach a device IO interrupt as a wake IRQ, same with dev_pm_set_wake_irq,
* but the device will be auto clear wake capability on driver detach.
*/
int devm_pm_set_wake_irq(struct device *dev, int irq)
{
int ret;
ret = dev_pm_set_wake_irq(dev, irq);
if (ret)
return ret;
return devm_add_action_or_reset(dev, devm_pm_clear_wake_irq, dev);
}
EXPORT_SYMBOL_GPL(devm_pm_set_wake_irq);
/**
* handle_threaded_wake_irq - Handler for dedicated wake-up interrupts
* @irq: Device specific dedicated wake-up interrupt

6
include/linux/pm_wakeirq.h
View File

@ -10,6 +10,7 @@ extern int dev_pm_set_wake_irq(struct device *dev, int irq);
extern int dev_pm_set_dedicated_wake_irq(struct device *dev, int irq);
extern int dev_pm_set_dedicated_wake_irq_reverse(struct device *dev, int irq);
extern void dev_pm_clear_wake_irq(struct device *dev);
extern int devm_pm_set_wake_irq(struct device *dev, int irq);
#else /* !CONFIG_PM */
@ -32,5 +33,10 @@ static inline void dev_pm_clear_wake_irq(struct device *dev)
{
}
static inline int devm_pm_set_wake_irq(struct device *dev, int irq)
{
return 0;
}
#endif /* CONFIG_PM */
#endif /* _LINUX_PM_WAKEIRQ_H */