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| author | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2019-10-07 16:47:15 +0300 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2019-10-07 16:49:22 +0300 |
| commit | f00eaa38eb0c7185ffff51c5288d00af9032e354 (patch) | |
| tree | c5a97924a34163ad2db90799f4d3f210f8bcd763 /include/linux/rtc.h | |
| parent | cd7629b27bf9a32f2f4020f9028216ebbd88725e (diff) | |
| download | linux-f00eaa38eb0c7185ffff51c5288d00af9032e354.tar.xz | |
rtc: add a timestamp for year 0
A few RTCs handle dates from year 0 to year 9999. Add a timestamp even if
years before 1970 will probably never be used.
Link: https://lore.kernel.org/r/20191007134724.15505-1-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Diffstat (limited to 'include/linux/rtc.h')
| -rw-r--r-- | include/linux/rtc.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/rtc.h b/include/linux/rtc.h index df666cf29ef1..2680f9b2b119 100644 --- a/include/linux/rtc.h +++ b/include/linux/rtc.h @@ -160,6 +160,7 @@ struct rtc_device { #define to_rtc_device(d) container_of(d, struct rtc_device, dev) /* useful timestamps */ +#define RTC_TIMESTAMP_BEGIN_0000 -62167219200ULL /* 0000-01-01 00:00:00 */ #define RTC_TIMESTAMP_BEGIN_1900 -2208988800LL /* 1900-01-01 00:00:00 */ #define RTC_TIMESTAMP_BEGIN_2000 946684800LL /* 2000-01-01 00:00:00 */ #define RTC_TIMESTAMP_END_2063 2966371199LL /* 2063-12-31 23:59:59 */ |