From: Alexandre Belloni Date: Mon, 7 Oct 2019 13:47:15 +0000 (+0200) Subject: rtc: add a timestamp for year 0 X-Git-Tag: v5.10.7~3720^2~73 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f00eaa38eb0c7185ffff51c5288d00af9032e354;p=platform%2Fkernel%2Flinux-rpi.git 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 --- diff --git a/include/linux/rtc.h b/include/linux/rtc.h index df666cf..2680f9b 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 */