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zenxfi3: RTC is used in same was as in fuze+, using seconds-since-1970 plus an offset

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Change-Id: Iab2e6e15c790c26d3bf2679e9f965a409d162783
This commit is contained in:
Bertrik Sikken 2012-05-27 00:14:42 +02:00
parent d523fd6e64
commit fca9e7bf8d
1 changed files with 6 additions and 6 deletions
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12
firmware/drivers/rtc/rtc_imx233.c
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@ -36,15 +36,15 @@ void rtc_init(void)
int rtc_read_datetime(struct tm *tm)
{
uint32_t seconds = imx233_rtc_read_seconds();
#ifdef SANSA_FUZEPLUS
#if defined(SANSA_FUZEPLUS) || defined(CREATIVE_ZENXFI3)
/* The OF uses PERSISTENT2 register to keep the adjustment and only changes
* SECONDS if necessary. */
seconds += imx233_rtc_read_persistent(2);
#else
#else
/* The Freescale recommended way of keeping time is the number of seconds
* since 00:00 1/1/1980 */
seconds += YEAR1980;
#endif
#endif
gmtime_r(&seconds, tm);
@ -57,18 +57,18 @@ int rtc_write_datetime(const struct tm *tm)
seconds = mktime((struct tm *)tm);
#ifdef SANSA_FUZEPLUS
#if defined(SANSA_FUZEPLUS) || defined(CREATIVE_ZENXFI3)
/* The OF uses PERSISTENT2 register to keep the adjustment and only changes
* SECONDS if necessary.
* NOTE: the OF uses this mechanism to prevent roll back in time. Although
* Rockbox will handle a negative PERSISTENT2 value, the OF will detect
* it and won't return in time before SECONDS */
imx233_rtc_write_persistent(2, seconds - imx233_rtc_read_seconds());
#else
#else
/* The Freescale recommended way of keeping time is the number of seconds
* since 00:00 1/1/1980 */
imx233_rtc_write_seconds(seconds - YEAR1980);
#endif
#endif
return 0;
}