On Thu, Aug 22, 2019 at 5:01 AM Alejandro González <[email protected]> wrote: > > This patch allows userspace to set up wakeup alarms on any RTC handled by the > sun6i driver, and adds the necessary PM operations to allow resuming from > suspend when the configured wakeup alarm fires a IRQ. Of course, that the > device actually resumes depends on the suspend state and how a particular > hardware reacts to it, but that is out of scope for this patch. > > I've tested these changes on a Pine H64 model B, which contains a > Allwinner H6 SoC, with the help of CONFIG_PM_TEST_SUSPEND kernel option. > These are the interesting outputs from the kernel and commands which > show that it works. As every RTC handled by this driver is largely the > same, I think that it shouldn't introduce any regression on other SoCs, > but I may be wrong. > > [ 1.092705] PM: test RTC wakeup from 'freeze' suspend > [ 1.098230] PM: suspend entry (s2idle) > [ 1.212907] PM: suspend devices took 0.080 seconds > (The SoC freezes for some seconds) > [ 3.197604] PM: resume devices took 0.104 seconds > [ 3.215937] PM: suspend exit > > [ 1.092812] PM: test RTC wakeup from 'mem' suspend > [ 1.098089] PM: suspend entry (deep) > [ 1.102033] PM: suspend exit > [ 1.105205] PM: suspend test failed, error -22 > > In any case, the RTC alarm interrupt gets fired as exptected: > > $ echo +5 > /sys/class/rtc/rtc0/wakealarm && sleep 5 && grep rtc > /proc/interrupts > 29: 1 0 0 0 GICv2 133 Level > 7000000.rtc > > Signed-off-by: Alejandro González <[email protected]>
This seems like standard PM stuff. Nothing sunxi-specific. FWIW, for sunxi, Acked-by: Chen-Yu Tsai <[email protected]> -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/linux-sunxi/CAGb2v64X4jbXcg1rnmmb5m%3DD%2BWUr-%3DBg%3D6GyJckLf19jMP7PBw%40mail.gmail.com.
