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rtc: pm8xxx: Attach wake irq to device

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Attach the interrupt as a wake-irq to the device, so that:
- A corresponding wakeup source is created (and reported in e.g
  /sys/kernel/debug/wakeup_sources).
- The power subsystem take cares of arming/disarming
  irq-wake automatically on suspend/resume.

Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/1645025082-6138-1-git-send-email-loic.poulain@linaro.org
This commit is contained in:
Loic Poulain 2022-02-16 16:24:42 +01:00 committed by Alexandre Belloni
parent 1521ca5b9f
commit b5bf5b283d
1 changed files with 10 additions and 21 deletions
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31
drivers/rtc/rtc-pm8xxx.c
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@ -7,6 +7,7 @@
#include <linux/rtc.h>
#include <linux/platform_device.h>
#include <linux/pm.h>
#include <linux/pm_wakeirq.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
@ -527,40 +528,28 @@ static int pm8xxx_rtc_probe(struct platform_device *pdev)
return rc;
}
return devm_rtc_register_device(rtc_dd->rtc);
}
rc = devm_rtc_register_device(rtc_dd->rtc);
if (rc)
return rc;
#ifdef CONFIG_PM_SLEEP
static int pm8xxx_rtc_resume(struct device *dev)
{
struct pm8xxx_rtc *rtc_dd = dev_get_drvdata(dev);
if (device_may_wakeup(dev))
disable_irq_wake(rtc_dd->rtc_alarm_irq);
rc = dev_pm_set_wake_irq(&pdev->dev, rtc_dd->rtc_alarm_irq);
if (rc)
return rc;
return 0;
}
static int pm8xxx_rtc_suspend(struct device *dev)
static int pm8xxx_remove(struct platform_device *pdev)
{
struct pm8xxx_rtc *rtc_dd = dev_get_drvdata(dev);
if (device_may_wakeup(dev))
enable_irq_wake(rtc_dd->rtc_alarm_irq);
dev_pm_clear_wake_irq(&pdev->dev);
return 0;
}
#endif
static SIMPLE_DEV_PM_OPS(pm8xxx_rtc_pm_ops,
pm8xxx_rtc_suspend,
pm8xxx_rtc_resume);
static struct platform_driver pm8xxx_rtc_driver = {
.probe = pm8xxx_rtc_probe,
.remove = pm8xxx_remove,
.driver = {
.name = "rtc-pm8xxx",
.pm = &pm8xxx_rtc_pm_ops,
.of_match_table = pm8xxx_id_table,
},
};