diff options
| author | Patrick Delaunay <patrick.delaunay@st.com> | 2019-07-22 14:50:21 +0200 |
|---|---|---|
| committer | Patrice Chotard <patrice.chotard@st.com> | 2019-08-27 09:36:56 +0200 |
| commit | fed51572c81192a9135380e88cfa445361dade5d (patch) | |
| tree | 3d5304d28553fd0385240b84d3ab7eb7775e5173 /drivers/rtc | |
| parent | 0203050e57f5e0ad6c696cb64cfbc01fd08b67c5 (diff) | |
| download | u-boot-fed51572c81192a9135380e88cfa445361dade5d.tar.gz | |
rtc: stm32: manage 2 digit limitation on year
STM32 RTC manages only 2 digits for YEAR
(Year tens and units in BCD format in RTC_DR register).
With this patch, RTC driver assumes that tm->tm_years is between
2000 and 2099; tm->tm_year - 2000 have only 2 digit
(0 > and <= 99).
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Diffstat (limited to 'drivers/rtc')
| -rw-r--r-- | drivers/rtc/stm32_rtc.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/rtc/stm32_rtc.c b/drivers/rtc/stm32_rtc.c index abd339076a..2674714442 100644 --- a/drivers/rtc/stm32_rtc.c +++ b/drivers/rtc/stm32_rtc.c @@ -72,7 +72,8 @@ static int stm32_rtc_get(struct udevice *dev, struct rtc_time *tm) tm->tm_mday = bcd2bin((dr & STM32_RTC_DATE) >> STM32_RTC_DATE_SHIFT); tm->tm_mon = bcd2bin((dr & STM32_RTC_MONTH) >> STM32_RTC_MONTH_SHIFT); - tm->tm_year = bcd2bin((dr & STM32_RTC_YEAR) >> STM32_RTC_YEAR_SHIFT); + tm->tm_year = 2000 + + bcd2bin((dr & STM32_RTC_YEAR) >> STM32_RTC_YEAR_SHIFT); tm->tm_wday = bcd2bin((dr & STM32_RTC_WDAY) >> STM32_RTC_WDAY_SHIFT); tm->tm_yday = 0; tm->tm_isdst = 0; @@ -174,6 +175,9 @@ static int stm32_rtc_set(struct udevice *dev, const struct rtc_time *tm) tm->tm_year, tm->tm_mon, tm->tm_mday, tm->tm_wday, tm->tm_hour, tm->tm_min, tm->tm_sec); + if (tm->tm_year < 2000 || tm->tm_year > 2099) + return -EINVAL; + /* Time in BCD format */ t = (bin2bcd(tm->tm_sec) << STM32_RTC_SEC_SHIFT) & STM32_RTC_SEC; t |= (bin2bcd(tm->tm_min) << STM32_RTC_MIN_SHIFT) & STM32_RTC_MIN; @@ -182,7 +186,8 @@ static int stm32_rtc_set(struct udevice *dev, const struct rtc_time *tm) /* Date in BCD format */ d = (bin2bcd(tm->tm_mday) << STM32_RTC_DATE_SHIFT) & STM32_RTC_DATE; d |= (bin2bcd(tm->tm_mon) << STM32_RTC_MONTH_SHIFT) & STM32_RTC_MONTH; - d |= (bin2bcd(tm->tm_year) << STM32_RTC_YEAR_SHIFT) & STM32_RTC_YEAR; + d |= (bin2bcd(tm->tm_year - 2000) << STM32_RTC_YEAR_SHIFT) & + STM32_RTC_YEAR; d |= (bin2bcd(tm->tm_wday) << STM32_RTC_WDAY_SHIFT) & STM32_RTC_WDAY; return stm32_rtc_set_time(dev, t, d); |