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 <k.kozlow...@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.p...@samsung.com>
---
drivers/rtc/rtc-s5m.c | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/drivers/rtc/rtc-s5m.c b/drivers/rtc/rtc-s5m.c
index 51471c1..ae8119d 100644
--- a/drivers/rtc/rtc-s5m.c
+++ b/drivers/rtc/rtc-s5m.c
@@ -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,
--
1.7.9.5
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