Hi Anatol, > > Hi > > There is huge interest both from hardwire and software vendors in using > Indoor Navigation at mobile devices. We are interested in making the > ChromeOS ecosystem using this feature as well. > > I checked how Android implements indoor navigation where it is used for a > while. It defines its custom API called Round-trip time [1]. > Broadcom chips firmware implements 11MC draft for this. > > I looked at current Linux tree and do not see any standard API for this > feature. iwlwifi/mvm/debugfs-vif.c file mentions "Time of Flight" > that seems 11MC related. Though this driver uses debugfs to communicate > with the driver. It does not sound like a best way to do it. I would expect a > callback in cfg80211 interface. Does anybody work on more conventional API > for this 11MC feature?
Yes we are. Patches are under review internally and should be posted soon. The debugfs interface was implemented when things were not quite clear on how the interface should really look like and served as an enabler to the firmware team (since this feature is mainly a firmware feature). We are now in transition phase and move all that to proper nl80211 APIs that will be published upstream soon. > > I expect that many wireless chips are going to implement 11MC in the > nearest future. Having such clean API from the start will simplify the feature > development. Nobody can disagree on that :) > > [1] > https://android.googlesource.com/platform/hardware/libhardware_legacy/ > +/master/include/hardware_legacy/rtt.h N�����r��y����b�X��ǧv�^�){.n�+����{��*ޕ�,�{ay� ʇڙ�,j��f���h���z� �w��� ���j:+v���w�j�m��������zZ+�����ݢj"��!�i
