drivers/rtc/rtc-pxa.c: fix alarm not match issue

Fix pxa rtc alarm issue by setting week of month and day of week in
rdar/rdcr or it would not match.

Signed-off-by: Leo Song <liangs@marvell.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 10 insertions, 1 deletions

diff --git a/drivers/rtc/rtc-pxa.c b/drivers/rtc/rtc-pxa.c
index f771b2ee4b18..2695e556f141 100644
--- a/drivers/rtc/rtc-pxa.c
+++ b/drivers/rtc/rtc-pxa.c
@@ -62,6 +62,10 @@
 #define RYxR_MONTH_S    5
 #define RYxR_MONTH_MASK (0xf << RYxR_MONTH_S)
 #define RYxR_DAY_MASK   0x1f
+#define RDxR_WOM_S     20
+#define RDxR_WOM_MASK  (0x7 << RDxR_WOM_S)
+#define RDxR_DOW_S     17
+#define RDxR_DOW_MASK  (0x7 << RDxR_DOW_S)
 #define RDxR_HOUR_S     12
 #define RDxR_HOUR_MASK  (0x1f << RDxR_HOUR_S)
 #define RDxR_MIN_S      6
@@ -91,6 +95,7 @@ struct pxa_rtc {
         spinlock_t              lock;           /* Protects this structure */
 };
 
+
 static u32 ryxr_calc(struct rtc_time *tm)
 {
         return ((tm->tm_year + 1900) << RYxR_YEAR_S)
@@ -100,7 +105,10 @@ static u32 ryxr_calc(struct rtc_time *tm)
 
 static u32 rdxr_calc(struct rtc_time *tm)
 {
-        return (tm->tm_hour << RDxR_HOUR_S) | (tm->tm_min << RDxR_MIN_S)
+        return ((((tm->tm_mday + 6) / 7) << RDxR_WOM_S) & RDxR_WOM_MASK)
+                | (((tm->tm_wday + 1) << RDxR_DOW_S) & RDxR_DOW_MASK)
+                | (tm->tm_hour << RDxR_HOUR_S)
+                | (tm->tm_min << RDxR_MIN_S)
                 | tm->tm_sec;
 }
 
@@ -109,6 +117,7 @@ static void tm_calc(u32 rycr, u32 rdcr, struct rtc_time *tm)
         tm->tm_year = ((rycr & RYxR_YEAR_MASK) >> RYxR_YEAR_S) - 1900;
         tm->tm_mon = (((rycr & RYxR_MONTH_MASK) >> RYxR_MONTH_S)) - 1;
         tm->tm_mday = (rycr & RYxR_DAY_MASK);
+        tm->tm_wday = ((rycr & RDxR_DOW_MASK) >> RDxR_DOW_S) - 1;
         tm->tm_hour = (rdcr & RDxR_HOUR_MASK) >> RDxR_HOUR_S;
         tm->tm_min = (rdcr & RDxR_MIN_MASK) >> RDxR_MIN_S;
         tm->tm_sec = rdcr & RDxR_SEC_MASK;