Use AlarmManager without wakeup support in kernel?

[ranchu]

Hello,

I have strange issue with alarms, which seems not to be supported. I can use rtc0 timer, but not alarms. Trying to do

root@w812a_kk:/ # busybox rtcwake -s 10

rtcwake: /dev/rtc0 not enabled for wakeup events

1|root@w812a_kk:/ #

then trying to compile a code which does timer, and alarm, I get invalid argument on

ioctl(fd, RTC_AIE_ON, 0);

I also see that wakeup entry is missing:

/sys/devices/platform/mt-rtc/rtc/rtc0

/sys/devices/platform/mt-rtc/rtc/rtc0/dev

/sys/devices/platform/mt-rtc/rtc/rtc0/date

/sys/devices/platform/mt-rtc/rtc/rtc0/name

/sys/devices/platform/mt-rtc/rtc/rtc0/time

/sys/devices/platform/mt-rtc/rtc/rtc0/power

/sys/devices/platform/mt-rtc/rtc/rtc0/since_epoch

/sys/devices/platform/mt-rtc/rtc/rtc0/device

/sys/devices/platform/mt-rtc/rtc/rtc0/subsystem

/sys/devices/platform/mt-rtc/rtc/rtc0/hctosys

/sys/devices/platform/mt-rtc/rtc/rtc0/max_user_freq

/sys/devices/platform/mt-rtc/rtc/rtc0/uevent

/sys/class/rtc/rtc0

How can I enable alarms ?

and if alarm are not supported in kernel, does it mean that AlarmManager in java will fail ?

Thanks Ran