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rtc: rv8803: fix off-by-one in month counting

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tm_mon has a range from 0..11, but the RTC expects 1..12. So we adapt
the month accordingly. This was determined when comparing the driver
with the corresponding linux kernel driver.

Signed-off-by: Oliver Graute <oliver.graute@kococonnector.com>
Reviewed-by: Michael Walle <michael@walle.cc>
Reviewed-by: Heiko Schocher <hs@denx.de>
This commit is contained in:
Oliver Graute 2022-04-26 09:26:12 +02:00 committed by Tom Rini
parent 2743470306
commit 8b42439ad1
1 changed files with 2 additions and 2 deletions
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4
drivers/rtc/rv8803.c
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@ -49,7 +49,7 @@ static int rv8803_rtc_set(struct udevice *dev, const struct rtc_time *tm)
printf("WARNING: year should be between 2000 and 2099!\n");
buf[RTC_YR_REG_ADDR] = bin2bcd(tm->tm_year % 100);
buf[RTC_MON_REG_ADDR] = bin2bcd(tm->tm_mon);
buf[RTC_MON_REG_ADDR] = bin2bcd(tm->tm_mon + 1);
buf[RTC_DAY_REG_ADDR] = 1 << (tm->tm_wday & 0x7);
buf[RTC_DATE_REG_ADDR] = bin2bcd(tm->tm_mday);
buf[RTC_HR_REG_ADDR] = bin2bcd(tm->tm_hour);
@ -90,7 +90,7 @@ static int rv8803_rtc_get(struct udevice *dev, struct rtc_time *tm)
tm->tm_min = bcd2bin(buf[RTC_MIN_REG_ADDR] & 0x7F);
tm->tm_hour = bcd2bin(buf[RTC_HR_REG_ADDR] & 0x3F);
tm->tm_mday = bcd2bin(buf[RTC_DATE_REG_ADDR] & 0x3F);
tm->tm_mon = bcd2bin(buf[RTC_MON_REG_ADDR] & 0x1F);
tm->tm_mon = bcd2bin(buf[RTC_MON_REG_ADDR] & 0x1F) - 1;
tm->tm_year = bcd2bin(buf[RTC_YR_REG_ADDR]) + 2000;
tm->tm_wday = fls(buf[RTC_DAY_REG_ADDR] & 0x7F) - 1;
tm->tm_yday = 0;