On 01.09.2014 22:19, Charles Devereaux wrote: > Hello > > I'm interested in WWAN support, mostly for the GPS features and the cool > things you can do with them (like a stratum ntp server). > Most GPS receivers don't have enough precision for any timing. > I was told a EM770W doesn't even need a network registration to output > NMEA coordinates > (http://forum.thinkpads.com/viewtopic.php?f=30&t=114426#p735612) so I > got one. > > I looked at patch #4056 which enable WWAN for the EC, but it seems to > only part of the job: the ACPI table should also contain a GWAN key for > thinkpad-acpi > Not necessary. > Apparently, this last part cause the WWAN card not to be handled by > thinkpad-acpi, which would otherwise provide rfkill support (usefull to > save power, something I'd like to improve) Soft rfkill is always available through wwan driver.
> I believe similar entries should be added to coreboot asl, but I'm not > sure of how integrated they should be. If I understand correctly, > following the logic of patch #5242, there should be a conditional > statement then some acpigen. > 5242 is very special because of wacom tablet interaction (serial device naming) See src/ec/lenovo/h8/acpi/ec.asl and included files for the relevant scopes
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