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rtc: rtc-at91sam9: convert at91_rtc_driver to dev_pm_ops

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Instead of using legacy suspend/resume methods, using newer dev_pm_ops
structure allows better control over power management.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jingoo Han 2013-04-29 16:20:58 -07:00 committed by Linus Torvalds
parent 08348d2f10
commit 4dc8eb13c2
1 changed files with 10 additions and 13 deletions
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23
drivers/rtc/rtc-at91sam9.c
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@ -404,14 +404,13 @@ static void at91_rtc_shutdown(struct platform_device *pdev)
rtt_writel(rtc, MR, mr & ~rtc->imr);
}
#ifdef CONFIG_PM
#ifdef CONFIG_PM_SLEEP
/* AT91SAM9 RTC Power management control */
static int at91_rtc_suspend(struct platform_device *pdev,
pm_message_t state)
static int at91_rtc_suspend(struct device *dev)
{
struct sam9_rtc *rtc = platform_get_drvdata(pdev);
struct sam9_rtc *rtc = dev_get_drvdata(dev);
u32 mr = rtt_readl(rtc, MR);
/*
@ -420,7 +419,7 @@ static int at91_rtc_suspend(struct platform_device *pdev,
*/
rtc->imr = mr & (AT91_RTT_ALMIEN | AT91_RTT_RTTINCIEN);
if (rtc->imr) {
if (device_may_wakeup(&pdev->dev) && (mr & AT91_RTT_ALMIEN)) {
if (device_may_wakeup(dev) && (mr & AT91_RTT_ALMIEN)) {
enable_irq_wake(rtc->irq);
/* don't let RTTINC cause wakeups */
if (mr & AT91_RTT_RTTINCIEN)
@ -432,13 +431,13 @@ static int at91_rtc_suspend(struct platform_device *pdev,
return 0;
}
static int at91_rtc_resume(struct platform_device *pdev)
static int at91_rtc_resume(struct device *dev)
{
struct sam9_rtc *rtc = platform_get_drvdata(pdev);
struct sam9_rtc *rtc = dev_get_drvdata(dev);
u32 mr;
if (rtc->imr) {
if (device_may_wakeup(&pdev->dev))
if (device_may_wakeup(dev))
disable_irq_wake(rtc->irq);
mr = rtt_readl(rtc, MR);
rtt_writel(rtc, MR, mr | rtc->imr);
@ -446,20 +445,18 @@ static int at91_rtc_resume(struct platform_device *pdev)
return 0;
}
#else
#define at91_rtc_suspend NULL
#define at91_rtc_resume NULL
#endif
static SIMPLE_DEV_PM_OPS(at91_rtc_pm_ops, at91_rtc_suspend, at91_rtc_resume);
static struct platform_driver at91_rtc_driver = {
.probe = at91_rtc_probe,
.remove = at91_rtc_remove,
.shutdown = at91_rtc_shutdown,
.suspend = at91_rtc_suspend,
.resume = at91_rtc_resume,
.driver = {
.name = "rtc-at91sam9",
.owner = THIS_MODULE,
.pm = &at91_rtc_pm_ops,
},
};