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Commit eb5eba4e authored by Laxman Dewangan's avatar Laxman Dewangan Committed by Linus Torvalds
Browse files

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: default avatarLaxman Dewangan <ldewangan@nvidia.com>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 36d61824

drivers/rtc/rtc-tps65910.c

+11 −1
Original line number Diff line number Diff line
@@ -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,