In my 2.6.18.8 kernel there is
Code:
root@babylon5:~>cat /proc/driver/rtc
rtc_time : 09:34:13
rtc_date : 2007-04-17
rtc_epoch : 1900
alarm : 07:50:00
DST_enable : no
BCD : yes
24hr : yes
....
but I am unsure if it is a standard interface you can count on for a long term project. Anyway...