I found alarm is platform driver that needs rtc device. Our board doesn't have rtc device and that is why I don't get node created. Anyone has linux patch with fake rtc device?
best regards, Petar Bajic On Sep 9, 7:03 am, Liu Xin <[email protected]> wrote: > /dev/alarm is necessary. It comes from a kernel patch called "android > alarm". you have to patch it to regular kernel on your own. > Without it, AlarmManagerService will have trouble to setup alarm. > > RTC is rarely referred directly in android. however, SystemServer will read > current time using gettiemofday. our kernel gives the value from RTC intial > value. if it is 0, or (other uninitialized value), it's possible to crash > AlarmManagerService later. > > thanks, > --lx > > On Thu, Sep 8, 2011 at 11:48 PM, extrapedestrian <[email protected] > > > > > > > > > wrote: > > Im porting Froyo to mips board, and I have trouble building alarm > > driver. > > I added source to kernel, it builds and I have driver log, but I don't > > have device. > > device node is not created: /dev/alarm > > I also don't have /dev/rtc and I think this might be causing problem. > > When does 'rtc_alarm_add_device' gets to be called? > > > thanks, > > Petar > > > -- > > unsubscribe: [email protected] > > website:http://groups.google.com/group/android-porting -- unsubscribe: [email protected] website: http://groups.google.com/group/android-porting
