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rtc: s5m: enable IRQ wake during suspend

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Add PM suspend/resume ops to rtc-s5m driver and enable IRQ wake during
suspend so the RTC would act like a wake up source.  This allows waking
up from suspend to RAM on RTC alarm interrupt.

Signed-off-by: Krzysztof Kozlowski <[email protected]>
Signed-off-by: Kyungmin Park <[email protected]>
Cc: Mark Brown <[email protected]>
Acked-by: Sangbeom Kim <[email protected]>
Cc: Samuel Ortiz <[email protected]>
Cc: Lee Jones <[email protected]>
Cc: Liam Girdwood <[email protected]>
Cc: Alessandro Zummo <[email protected]>
Cc: Marek Szyprowski <[email protected]>
Cc: Geert Uytterhoeven <[email protected]>
Cc: Kyungmin Park <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Krzysztof Kozlowski 2013-12-12 17:12:30 -08:00 • committed by Linus Torvalds
commit 222ead7fd8
1 changed files with 25 additions and 0 deletions
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25
drivers/rtc/rtc-s5m.c
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@ -639,6 +639,30 @@ static void s5m_rtc_shutdown(struct platform_device *pdev)
s5m_rtc_enable_smpl(info, false);
}
static int s5m_rtc_resume(struct device *dev)
{
struct s5m_rtc_info *info = dev_get_drvdata(dev);
int ret = 0;
if (device_may_wakeup(dev))
ret = disable_irq_wake(info->irq);
return ret;
}
static int s5m_rtc_suspend(struct device *dev)
{
struct s5m_rtc_info *info = dev_get_drvdata(dev);
int ret = 0;
if (device_may_wakeup(dev))
ret = enable_irq_wake(info->irq);
return ret;
}
static SIMPLE_DEV_PM_OPS(s5m_rtc_pm_ops, s5m_rtc_suspend, s5m_rtc_resume);
static const struct platform_device_id s5m_rtc_id[] = {
{ "s5m-rtc", 0 },
};
@ -647,6 +671,7 @@ static struct platform_driver s5m_rtc_driver = {
.driver = {
.name = "s5m-rtc",
.owner = THIS_MODULE,
.pm = &s5m_rtc_pm_ops,
},
.probe = s5m_rtc_probe,
.shutdown = s5m_rtc_shutdown,