[PATCH 10/12] rtc: omap: enable wake-up from power off

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



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@xxxxxxxxxx>
---
 drivers/rtc/rtc-omap.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/rtc/rtc-omap.c b/drivers/rtc/rtc-omap.c
index b0319864dd42..8836c58901b5 100644
--- a/drivers/rtc/rtc-omap.c
+++ b/drivers/rtc/rtc-omap.c
@@ -670,7 +670,15 @@ static SIMPLE_DEV_PM_OPS(omap_rtc_pm_ops, omap_rtc_suspend, omap_rtc_resume);
 
 static void omap_rtc_shutdown(struct platform_device *pdev)
 {
-	rtc_write(0, OMAP_RTC_INTERRUPTS_REG);
+	u8 mask;
+
+	/*
+	 * Keep the ALARM interrupt enabled to allow the system to power up on
+	 * alarm events.
+	 */
+	mask = rtc_read(OMAP_RTC_INTERRUPTS_REG);
+	mask &= OMAP_RTC_INTERRUPTS_IT_ALARM;
+	rtc_write(mask, OMAP_RTC_INTERRUPTS_REG);
 }
 
 MODULE_ALIAS("platform:omap_rtc");
-- 
2.0.4

--
To unsubscribe from this list: send the line "unsubscribe linux-omap" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux Arm (vger)]     [ARM Kernel]     [ARM MSM]     [Linux Tegra]     [Linux WPAN Networking]     [Linux Wireless Networking]     [Maemo Users]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Trails]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux