From eb5eba4ef72248b976465906cfed5fca2e9d8831 Mon Sep 17 00:00:00 2001
From: Laxman Dewangan <ldewangan@nvidia.com>
Date: Thu, 21 Feb 2013 16:44:35 -0800
Subject: 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>
---
drivers/rtc/rtc-tps65910.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
(limited to 'drivers/rtc/rtc-tps65910.c')
diff --git a/drivers/rtc/rtc-tps65910.c b/drivers/rtc/rtc-tps65910.c
index e5fef141a0e2..932a655aa41c 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 @@ static int tps65910_rtc_probe(struct platform_device *pdev)
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_remove(struct platform_device *pdev)
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_suspend(struct device *dev)
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,
--
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