LWMON5: POST RTC fix
Modify the RTC API to provide one a status for the time reported by
the rtc_get() function:
0 - a reliable time is guaranteed,
< 0 - a reliable time isn't guaranteed (power fault, clock issues,
and so on).
The RTC chip drivers are responsible for providing this info if the
corresponding chip supports such functionality. If not - always
report that the time is reliable.
The POST RTC test was modified to detect the RTC faults utilizing
this new rtc_get() feature.
Signed-off-by: Yuri Tikhonov <yur@emcraft.com>
diff --git a/drivers/rtc/ds1307.c b/drivers/rtc/ds1307.c
index c882d79..b20f193 100644
--- a/drivers/rtc/ds1307.c
+++ b/drivers/rtc/ds1307.c
@@ -83,8 +83,9 @@
/*
* Get the current time from the RTC
*/
-void rtc_get (struct rtc_time *tmp)
+int rtc_get (struct rtc_time *tmp)
{
+ int rel = 0;
uchar sec, min, hour, mday, wday, mon, year;
sec = rtc_read (RTC_SEC_REG_ADDR);
@@ -104,6 +105,7 @@
/* clear the CH flag */
rtc_write (RTC_SEC_REG_ADDR,
rtc_read (RTC_SEC_REG_ADDR) & ~RTC_SEC_BIT_CH);
+ rel = -1;
}
tmp->tm_sec = bcd2bin (sec & 0x7F);
@@ -119,6 +121,8 @@
DEBUGR ("Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
+
+ return rel;
}