drivers/rtc/rtc-tps65910.c: enable/disable wake in suspend/resume
Making the rtc driver as wakeup capabale and leaving the wake
enable/disable decision to user space through a sysfs attribute.
In suspend, enable wake if device wakeup enabled. In resume disable wake
again.
This change is inline with the Documentation/power/devices.txt#
/sys/devices/.../power/wakeup files
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/rtc/rtc-tps65910.c b/drivers/rtc/rtc-tps65910.c
index e5fef14..932a655 100644
--- a/drivers/rtc/rtc-tps65910.c
+++ b/drivers/rtc/rtc-tps65910.c
@@ -27,6 +27,7 @@
struct tps65910_rtc {
struct rtc_device *rtc;
+ int irq;
/* To store the list of enabled interrupts */
u32 irqstat;
};
@@ -273,7 +274,8 @@
dev_err(&pdev->dev, "IRQ is not free.\n");
return ret;
}
- device_init_wakeup(&pdev->dev, 1);
+ tps_rtc->irq = irq;
+ device_set_wakeup_capable(&pdev->dev, 1);
tps_rtc->rtc = rtc_device_register(pdev->name, &pdev->dev,
&tps65910_rtc_ops, THIS_MODULE);
@@ -308,9 +310,13 @@
static int tps65910_rtc_suspend(struct device *dev)
{
struct tps65910 *tps = dev_get_drvdata(dev->parent);
+ struct tps65910_rtc *tps_rtc = dev_get_drvdata(dev);
u8 alarm = TPS65910_RTC_INTERRUPTS_IT_ALARM;
int ret;
+ if (device_may_wakeup(dev))
+ enable_irq_wake(tps_rtc->irq);
+
/* Store current list of enabled interrupts*/
ret = regmap_read(tps->regmap, TPS65910_RTC_INTERRUPTS,
&tps->rtc->irqstat);
@@ -324,6 +330,10 @@
static int tps65910_rtc_resume(struct device *dev)
{
struct tps65910 *tps = dev_get_drvdata(dev->parent);
+ struct tps65910_rtc *tps_rtc = dev_get_drvdata(dev);
+
+ if (device_may_wakeup(dev))
+ disable_irq_wake(tps_rtc->irq);
/* Restore list of enabled interrupts before suspend */
return regmap_write(tps->regmap, TPS65910_RTC_INTERRUPTS,
