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authorYuri Tikhonov <yur@emcraft.com>2008-03-20 17:56:04 +0300
committerWolfgang Denk <wd@denx.de>2008-03-20 21:48:46 +0100
commitb73a19e1609d0f705cbab8014ca17aefe89e4c76 (patch)
tree4f6752b24fe118da445233479396497d516a1e50 /drivers/rtc/ds1374.c
parent23e20aa6488e6c0622496549861bfdc74108debe (diff)
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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>
Diffstat (limited to 'drivers/rtc/ds1374.c')
-rw-r--r--drivers/rtc/ds1374.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/rtc/ds1374.c b/drivers/rtc/ds1374.c
index e773dd9..f6bb296 100644
--- a/drivers/rtc/ds1374.c
+++ b/drivers/rtc/ds1374.c
@@ -107,8 +107,8 @@ static void rtc_write_raw (uchar reg, uchar val);
/*
* Get the current time from the RTC
*/
-void rtc_get (struct rtc_time *tm){
-
+int rtc_get (struct rtc_time *tm){
+ int rel = 0;
unsigned long time1, time2;
unsigned int limit;
unsigned char tmp;
@@ -138,18 +138,23 @@ void rtc_get (struct rtc_time *tm){
if (time1 != time2) {
printf("can't get consistent time from rtc chip\n");
+ rel = -1;
}
DEBUGR ("Get RTC s since 1.1.1970: %d\n", time1);
to_tm(time1, tm); /* To Gregorian Date */
- if (rtc_read(RTC_SR_ADDR) & RTC_SR_BIT_OSF)
+ if (rtc_read(RTC_SR_ADDR) & RTC_SR_BIT_OSF) {
printf ("### Warning: RTC oscillator has stopped\n");
+ rel = -1;
+ }
DEBUGR ("Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
tm->tm_year, tm->tm_mon, tm->tm_mday, tm->tm_wday,
tm->tm_hour, tm->tm_min, tm->tm_sec);
+
+ return rel;
}
/*