rtc/spear: fix for RTC_AIE_ON and RTC_AIE_OFF ioctl errors

Define API for '.alarm_irq_enable' to enable and disable alarm irq. This
is required by the framework else RTC_AIE_ON and RTC_AIE_OFF ioctls
return errors.

Signed-off-by: Shiraz Hashim <shiraz.hashim@st.com>
Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Cc: Deepak Sikri <deepak.sikri@st.com>
Acked-by: Rajeev Kumar <rajeev-dlh.kumar@st.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 28 insertions, 0 deletions

diff --git a/drivers/rtc/rtc-spear.c b/drivers/rtc/rtc-spear.c
index 4f068e9ec0f8..646937473515 100644
--- a/drivers/rtc/rtc-spear.c
+++ b/drivers/rtc/rtc-spear.c
@@ -327,11 +327,39 @@ static int spear_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
 
         return 0;
 }
+
+static int spear_alarm_irq_enable(struct device *dev, unsigned int enabled)
+{
+        struct platform_device *pdev = to_platform_device(dev);
+        struct rtc_device *rtc = platform_get_drvdata(pdev);
+        struct spear_rtc_config *config = dev_get_drvdata(&rtc->dev);
+        int ret = 0;
+
+        spear_rtc_clear_interrupt(config);
+
+        switch (enabled) {
+        case 0:
+                /* alarm off */
+                spear_rtc_disable_interrupt(config);
+                break;
+        case 1:
+                /* alarm on */
+                spear_rtc_enable_interrupt(config);
+                break;
+        default:
+                ret = -EINVAL;
+                break;
+        }
+
+        return ret;
+}
+
 static struct rtc_class_ops spear_rtc_ops = {
         .read_time = spear_rtc_read_time,
         .set_time = spear_rtc_set_time,
         .read_alarm = spear_rtc_read_alarm,
         .set_alarm = spear_rtc_set_alarm,
+        .alarm_irq_enable = spear_alarm_irq_enable,
 };
 
 static int __devinit spear_rtc_probe(struct platform_device *pdev)