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-rw-r--r--dev/rtcreg.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/dev/rtcreg.h b/dev/rtcreg.h
index 0b33c25b2..032e22ab5 100644
--- a/dev/rtcreg.h
+++ b/dev/rtcreg.h
@@ -36,8 +36,22 @@
#define RTC_DOM 0x07
#define RTC_MON 0x08
#define RTC_YEAR 0x09
+
#define RTC_CNTRL_REGA 0x0A
+#define RTCA_1024HZ 0x06 /* 1024Hz periodic interrupt frequency */
+#define RTCA_32768HZ 0x20 /* 22-stage divider, 32.768KHz timebase */
+#define RTCA_UIP 0x80 /* 1 = date and time update in progress */
+
#define RTC_CNTRL_REGB 0x0B
+#define RTCB_DST 0x01 /* USA Daylight Savings Time enable */
+#define RTCB_24HR 0x02 /* 0 = 12 hours, 1 = 24 hours */
+#define RTCB_BIN 0x04 /* 0 = BCD, 1 = Binary coded time */
+#define RTCB_SQWE 0x08 /* 1 = output sqare wave at SQW pin */
+#define RTCB_UPDT_IE 0x10 /* 1 = enable update-ended interrupt */
+#define RTCB_ALRM_IE 0x20 /* 1 = enable alarm interrupt */
+#define RTCB_PRDC_IE 0x40 /* 1 = enable periodic clock interrupt */
+#define RTCB_NO_UPDT 0x80 /* stop clock updates */
+
#define RTC_CNTRL_REGC 0x0C
#define RTC_CNTRL_REGD 0x0D