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[ARM] pxa/sa1100: replace wakeup support 

Replace wakeup support using the alarm via the SA1100 RTC driver on
SA1100 and PXA platforms.  This allows RTC alarm wakeup to be enabled
via sysfs using the conventional attributes.

Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2007-11-12 22:49:58 +00:00 committed by Russell King
parent 4ae7806f8b
commit 6bc54e6992
1 changed files with 31 additions and 0 deletions
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31
drivers/rtc/rtc-sa1100.c
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@ -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",
},