Commit fd8318a3 authored by Peng Fan's avatar Peng Fan Committed by Rafael J. Wysocki
Browse files

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



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: default avatarPeng Fan <peng.fan@nxp.com>
Link: https://patch.msgid.link/20250103-wake_irq-v2-1-e3aeff5e9966@nxp.com


Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 56cabb93

drivers/base/power/wakeirq.c

+26 −0
Original line number Diff line number Diff line
@@ -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

include/linux/pm_wakeirq.h

+6 −0
Original line number Diff line number Diff line
@@ -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 */