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path: root/drivers/rtc/rtc-sa1100.c
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Diffstat (limited to 'drivers/rtc/rtc-sa1100.c')
-rw-r--r--drivers/rtc/rtc-sa1100.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/rtc/rtc-sa1100.c b/drivers/rtc/rtc-sa1100.c
index 6f1e9a9804b..2eb38520f0c 100644
--- a/drivers/rtc/rtc-sa1100.c
+++ b/drivers/rtc/rtc-sa1100.c
@@ -337,6 +337,8 @@ static int sa1100_rtc_probe(struct platform_device *pdev)
if (IS_ERR(rtc))
return PTR_ERR(rtc);
+ device_init_wakeup(&pdev->dev, 1);
+
platform_set_drvdata(pdev, rtc);
return 0;
@@ -352,9 +354,38 @@ static int sa1100_rtc_remove(struct platform_device *pdev)
return 0;
}
+#ifdef CONFIG_PM
+static int sa1100_rtc_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ if (pdev->dev.power.power_state.event != state.event) {
+ if (state.event == PM_EVENT_SUSPEND &&
+ device_may_wakeup(&pdev->dev))
+ enable_irq_wake(IRQ_RTCAlrm);
+
+ pdev->dev.power.power_state = state;
+ }
+ return 0;
+}
+
+static int sa1100_rtc_resume(struct platform_device *pdev)
+{
+ if (pdev->dev.power.power_state.event != PM_EVENT_ON) {
+ if (device_may_wakeup(&pdev->dev))
+ disable_irq_wake(IRQ_RTCAlrm);
+ pdev->dev.power.power_state = PMSG_ON;
+ }
+ return 0;
+}
+#else
+#define sa1100_rtc_suspend NULL
+#define sa1100_rtc_resume NULL
+#endif
+
static struct platform_driver sa1100_rtc_driver = {
.probe = sa1100_rtc_probe,
.remove = sa1100_rtc_remove,
+ .suspend = sa1100_rtc_suspend,
+ .resume = sa1100_rtc_resume,
.driver = {
.name = "sa1100-rtc",
},