[PATCH 3/3] rtc: max8925: add function to work as wakeup source

Haojian Zhuang
2012-01-04T07:07:56Z

From: Kevin Liu <kliu5@marvell.com>

Signed-off-by: Kevin Liu <kliu5@marvell.com>
Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
---
drivers/rtc/rtc-max8925.c | 26 ++++++++++++++++++++++++++
1 files changed, 26 insertions(+), 0 deletions(-)

diff --git a/drivers/rtc/rtc-max8925.c b/drivers/rtc/rtc-max8925.c
index 3bc046f..b281bae 100644
--- a/drivers/rtc/rtc-max8925.c
+++ b/drivers/rtc/rtc-max8925.c
@@ -261,6 +261,8 @@ static int __devinit max8925_rtc_probe(struct platform_device *pdev)
/* XXX - isn't this redundant? */
platform_set_drvdata(pdev, info);

+ device_init_wakeup(&pdev->dev, 1);
+
info->rtc_dev = rtc_device_register("max8925-rtc", &pdev->dev,
&max8925_rtc_ops, THIS_MODULE);
ret = PTR_ERR(info->rtc_dev);
@@ -290,10 +292,34 @@ static int __devexit max8925_rtc_remove(struct platform_device *pdev)
return 0;
}

+#ifdef CONFIG_PM_SLEEP
+static int max8925_rtc_suspend(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct max8925_chip *chip = dev_get_drvdata(pdev->dev.parent);
+
+ if (device_may_wakeup(dev))
+ chip->wakeup_flag |= 1 << MAX8925_IRQ_RTC_ALARM0;
+ return 0;
+}
+static int max8925_rtc_resume(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct max8925_chip *chip = dev_get_drvdata(pdev->dev.parent);
+
+ if (device_may_wakeup(dev))
+ chip->wakeup_flag &= ~(1 << MAX8925_IRQ_RTC_ALARM0);
+ return 0;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(max8925_rtc_pm_ops, max8925_rtc_suspend, max8925_rtc_resume);
+
static struct platform_driver max8925_rtc_driver = {
.driver = {
.name = "max8925-rtc",
.owner = THIS_MODULE,
+ .pm = &max8925_rtc_pm_ops,
},
.probe = max8925_rtc_probe,
.remove = __devexit_p(max8925_rtc_remove),
--
1.7.0.4