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| author | Yuri Tikhonov <yur@emcraft.com> | 2008-03-20 17:56:04 +0300 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2008-03-20 21:48:46 +0100 |
| commit | b73a19e1609d0f705cbab8014ca17aefe89e4c76 (patch) | |
| tree | 4f6752b24fe118da445233479396497d516a1e50 /drivers/rtc/ds1374.c | |
| parent | 23e20aa6488e6c0622496549861bfdc74108debe (diff) | |
| download | olio-uboot-2014.01-b73a19e1609d0f705cbab8014ca17aefe89e4c76.tar.xz olio-uboot-2014.01-b73a19e1609d0f705cbab8014ca17aefe89e4c76.zip | |
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.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/rtc/ds1374.c b/drivers/rtc/ds1374.c index e773dd926..f6bb2965a 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; } /* |