diff options
| 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/rx8025.c | |
| parent | 23e20aa6488e6c0622496549861bfdc74108debe (diff) | |
| download | u-boot-imx-b73a19e1609d0f705cbab8014ca17aefe89e4c76.zip u-boot-imx-b73a19e1609d0f705cbab8014ca17aefe89e4c76.tar.gz u-boot-imx-b73a19e1609d0f705cbab8014ca17aefe89e4c76.tar.bz2 | |
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/rx8025.c')
| -rw-r--r-- | drivers/rtc/rx8025.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/drivers/rtc/rx8025.c b/drivers/rtc/rx8025.c index 9122f12..64eafe5 100644 --- a/drivers/rtc/rx8025.c +++ b/drivers/rtc/rx8025.c @@ -96,8 +96,9 @@ static unsigned bcd2bin (uchar c); /* * 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, ctl2; uchar buf[16]; @@ -118,14 +119,20 @@ void rtc_get (struct rtc_time *tmp) /* dump status */ ctl2 = rtc_read(RTC_CTL2_REG_ADDR); - if (ctl2 & RTC_CTL2_BIT_PON) + if (ctl2 & RTC_CTL2_BIT_PON) { printf("RTC: power-on detected\n"); + rel = -1; + } - if (ctl2 & RTC_CTL2_BIT_VDET) + if (ctl2 & RTC_CTL2_BIT_VDET) { printf("RTC: voltage drop detected\n"); + rel = -1; + } - if (!(ctl2 & RTC_CTL2_BIT_XST)) + if (!(ctl2 & RTC_CTL2_BIT_XST)) { printf("RTC: oscillator stop detected\n"); + rel = -1; + } tmp->tm_sec = bcd2bin (sec & 0x7F); tmp->tm_min = bcd2bin (min & 0x7F); @@ -140,6 +147,8 @@ void rtc_get (struct rtc_time *tmp) 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; } /* |