From b73a19e1609d0f705cbab8014ca17aefe89e4c76 Mon Sep 17 00:00:00 2001 From: Yuri Tikhonov Date: Thu, 20 Mar 2008 17:56:04 +0300 Subject: 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 --- drivers/rtc/pcf8563.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'drivers/rtc/pcf8563.c') diff --git a/drivers/rtc/pcf8563.c b/drivers/rtc/pcf8563.c index 2d73d5d7e..c384975f3 100644 --- a/drivers/rtc/pcf8563.c +++ b/drivers/rtc/pcf8563.c @@ -41,8 +41,9 @@ static unsigned bcd2bin(uchar c); /* ------------------------------------------------------------------------- */ -void rtc_get (struct rtc_time *tmp) +int rtc_get (struct rtc_time *tmp) { + int rel = 0; uchar sec, min, hour, mday, wday, mon_cent, year; sec = rtc_read (0x02); @@ -65,6 +66,7 @@ void rtc_get (struct rtc_time *tmp) if (sec & 0x80) { puts ("### Warning: RTC Low Voltage - date/time not reliable\n"); + rel = -1; } tmp->tm_sec = bcd2bin (sec & 0x7F); @@ -80,6 +82,8 @@ void rtc_get (struct rtc_time *tmp) debug ( "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; } void rtc_set (struct rtc_time *tmp) -- cgit v1.2.3-70-g09d2