Richard Zidlicky wrote:
> Btw the interrupt need not to be hardware, for the Q40 I test
> a rtc register once per jiffie and generate a "soft interrupt".
> It could be done generic at least for m68k.
I have written an experiemntal ptimer driver to do just this and potential
more. Such a device is useful for real-time programming (e.g., when you try
to implement a periodic user task).
The driver is architecture independent (i.e., linux-common code)
Due to the different programming needs behind periodic timers (or user-level
timer) and RTC operations, my vote for future work is to leave them as two
separate drivers. To me, RTC is really just to read/write RTC clock.