* [PATCH] rtc: Add useful timestamp definitions
@ 2018-03-07 23:13 Alexandre Belloni
0 siblings, 0 replies; only message in thread
From: Alexandre Belloni @ 2018-03-07 23:13 UTC (permalink / raw)
To: linux-rtc; +Cc: linux-kernel, Alexandre Belloni
Add commonly used timestamps for range definition.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
---
include/linux/rtc.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/include/linux/rtc.h b/include/linux/rtc.h
index 82a3038f16ab..4c007f69082f 100644
--- a/include/linux/rtc.h
+++ b/include/linux/rtc.h
@@ -169,6 +169,11 @@ struct rtc_device {
};
#define to_rtc_device(d) container_of(d, struct rtc_device, dev)
+/* useful timestamps */
+#define RTC_TIMESTAMP_BEGIN_1900 -2208989361LL /* 1900-01-01 00:00:00 */
+#define RTC_TIMESTAMP_BEGIN_2000 946684800LL /* 2000-01-01 00:00:00 */
+#define RTC_TIMESTAMP_END_2099 4102444799LL /* 2099-12-31 23:59:59 */
+
extern struct rtc_device *rtc_device_register(const char *name,
struct device *dev,
const struct rtc_class_ops *ops,
--
2.16.2
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