[ARM] 4357/1: AT91: Support slower serial baud-rates

[linux-2.6-omap-h63xx.git] / drivers / rtc / rtc-sh.c

diff --git a/drivers/rtc/rtc-sh.c b/drivers/rtc/rtc-sh.c
index 72ba1a70f35f6def6e9468c5fd9a5f70cb5216a0..198b9f22fbff5ca93748e2c06b4f04d815ec94b5 100644 (file)
--- a/drivers/rtc/rtc-sh.c
+++ b/drivers/rtc/rtc-sh.c
@@ -264,8 +264,6 @@ static int sh_rtc_proc(struct device *dev, struct seq_file *seq)
        unsigned int tmp;
 
        tmp = readb(rtc->regbase + RCR1);
-       seq_printf(seq, "alarm_IRQ\t: %s\n",
-                  (tmp & RCR1_AIE) ? "yes" : "no");
        seq_printf(seq, "carry_IRQ\t: %s\n",
                   (tmp & RCR1_CIE) ? "yes" : "no");
 
@@ -428,6 +426,8 @@ static int sh_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *wkalrm)
                tm->tm_mon -= 1; /* RTC is 1-12, tm_mon is 0-11 */
        tm->tm_year     = 0xffff;
 
+       wkalrm->enabled = (readb(rtc->regbase + RCR1) & RCR1_AIE) ? 1 : 0;
+
        spin_unlock_irq(&rtc->lock);
 
        return 0;
@@ -492,10 +492,10 @@ static int sh_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *wkalrm)
 
        spin_lock_irq(&rtc->lock);
 
-       /* disable alarm interrupt and clear flag */
+       /* disable alarm interrupt and clear the alarm flag */
        rcr1 = readb(rtc->regbase + RCR1);
-       rcr1 &= ~RCR1_AF;
-       writeb(rcr1 & ~RCR1_AIE, rtc->regbase + RCR1);
+       rcr1 &= ~(RCR1_AF|RCR1_AIE);
+       writeb(rcr1, rtc->regbase + RCR1);
 
        rtc->rearm_aie = 0;
 
@@ -510,8 +510,10 @@ static int sh_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *wkalrm)
                mon += 1;
        sh_rtc_write_alarm_value(rtc, mon, RMONAR);
 
-       /* Restore interrupt activation status */
-       writeb(rcr1, rtc->regbase + RCR1);
+       if (wkalrm->enabled) {
+               rcr1 |= RCR1_AIE;
+               writeb(rcr1, rtc->regbase + RCR1);
+       }
 
        spin_unlock_irq(&rtc->lock);