On 04/19/2014 18:58, Maciej W. Rozycki wrote: > This brings in drivers/char/rtc.c functionality required for DECstation > and, should the maintainers decide to switch, Alpha systems to use > rtc-cmos. > > Specifically these features are made available: > [snip] > * The ability to use the RTC periodic interrupt as a system clock device, > which is implemented by arch/mips/kernel/cevt-ds1287.c for DECstation > systems and takes the RTC interrupt away from the RTC driver. > Eventually hooking back to the clock device's interrupt handler should > be possible for the purpose of the alarm clock and possibly also > update-in-progress interrupt, but this is not done by this change. I had this implemented myself in the DS1685 driver I've still yet to send in (for SGI IP32). But the upper-level RTC code for periodic and update interrupts was removed sometime between 2.6.39 and 3.0 and uses the kernel's hrtimers to replace it. No idea if they'll ever re-add that code for RTC drivers that can use the hardware implementation instead. -- Joshua Kinard Gentoo/MIPS kumba@xxxxxxxxxx 4096R/D25D95E3 2011-03-28 "The past tempts us, the present confuses us, the future frightens us. And our lives slip away, moment by moment, lost in that vast, terrible in-between." --Emperor Turhan, Centauri Republic
