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rtc: omap: enable wake-up from power off
The ALARM interrupt must not be disabled during shutdown in order to be able to power up the system using an RTC alarm. Signed-off-by: Johan Hovold <johan@kernel.org> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Tony Lindgren <tony@atomide.com> Cc: Benot Cousson <bcousson@baylibre.com> Cc: Lokesh Vutla <lokeshvutla@ti.com> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Sekhar Nori <nsekhar@ti.com> Cc: Tero Kristo <t-kristo@ti.com> Cc: Keerthy J <j-keerthy@ti.com> Tested-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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1 changed files with 8 additions and 1 deletions
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@ -694,8 +694,15 @@ static SIMPLE_DEV_PM_OPS(omap_rtc_pm_ops, omap_rtc_suspend, omap_rtc_resume);
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static void omap_rtc_shutdown(struct platform_device *pdev)
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{
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struct omap_rtc *rtc = platform_get_drvdata(pdev);
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u8 mask;
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rtc_write(rtc, OMAP_RTC_INTERRUPTS_REG, 0);
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/*
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* Keep the ALARM interrupt enabled to allow the system to power up on
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* alarm events.
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*/
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mask = rtc_read(rtc, OMAP_RTC_INTERRUPTS_REG);
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mask &= OMAP_RTC_INTERRUPTS_IT_ALARM;
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rtc_write(rtc, OMAP_RTC_INTERRUPTS_REG, mask);
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}
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static struct platform_driver omap_rtc_driver = {
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