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alistair23-linux
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rtc: mv: add range 

This RTC handles time from 2000-01-01 00:00:00 to 2099-12-31 23:59:59 with
a weird rollover to 2000-06-23 00:00:00.

Tested-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
hifive-unleashed-5.2
Alexandre Belloni 2019-03-15 14:35:10 +01:00
parent 5b25a71b68
commit b46c5815be
1 changed files with 5 additions and 2 deletions
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7
drivers/rtc/rtc-mv.c
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@ -57,7 +57,7 @@ static int mv_rtc_set_time(struct device *dev, struct rtc_time *tm)
rtc_reg = (bin2bcd(tm->tm_mday) << RTC_MDAY_OFFS) |
(bin2bcd(tm->tm_mon + 1) << RTC_MONTH_OFFS) |
(bin2bcd(tm->tm_year % 100) << RTC_YEAR_OFFS);
(bin2bcd(tm->tm_year - 100) << RTC_YEAR_OFFS);
writel(rtc_reg, ioaddr + RTC_DATE_REG_OFFS);
return 0;
@ -156,7 +156,7 @@ static int mv_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
<< RTC_MONTH_OFFS;
if (alm->time.tm_year >= 0)
rtc_reg |= (RTC_ALARM_VALID | bin2bcd(alm->time.tm_year % 100))
rtc_reg |= (RTC_ALARM_VALID | bin2bcd(alm->time.tm_year - 100))
<< RTC_YEAR_OFFS;
writel(rtc_reg, ioaddr + RTC_ALARM_DATE_REG_OFFS);
@ -277,6 +277,9 @@ static int __init mv_rtc_probe(struct platform_device *pdev)
pdata->rtc->ops = &mv_rtc_ops;
}
pdata->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;
pdata->rtc->range_max = RTC_TIMESTAMP_END_2099;
ret = rtc_register_device(pdata->rtc);
if (!ret)
return 0;