Hi Samuel, Thanks for your reply. > -----Original Message----- > From: Samuel Ortiz [mailto:samuel@xxxxxxxxxx] > Sent: Monday, July 11, 2011 3:46 AM > To: Elias, Ilan > Cc: linux-wireless@xxxxxxxxxxxxxxx > Subject: Re: [PATCH v5 0/6] NFC subsystem > > Hi Ilan, > > On Sun, 2011-07-10 at 16:16 +0200, Elias, Ilan wrote: > > Hi Aloisio, > > > > I went over the userspace interface and it seems to me > > that it's very much following the PN533 chip interface. > > > > As you probably know, the NFC forum is in the process of defining > > a new industry standard for the NFC Controller Interface (NCI). > > All NFC chips in the near future will probably support the NCI, > I suppose that's arguable, especialy the "All" and "near future" terms > of your statement :) > Moreover, as far as I know, most NFC chips are currently HCI based and I > expect the transition from HCI to NCI to not be that fast. I assume you're right and it might take some time for the transition to occur, but still I believe most of NFC chips will support NCI in the near future. Thus, I think the userspace interface should also take into consideration the NCI. > > > > > > which will provide a generic and standard interface for NFC > > functionality. > > > > I think that your current userspace interface might be too specific > > for PN533 chip, and might not expose all the required NFC functionality. > The idea for the current netlink userspace API is to be a generic and > high level one. It should allow for userspace components to build their > target management code and NDEF parsing code on top of it, without > having to know if the below HW is HCI, NCI or anything else based. > Also, please note that the current API is going to be soon extended to > support target mode. I agree that the userspace API should be generic and high level one, so it will be able to support all underlying HW interface, e.g. HCI and NCI. > > > > A similar case with Bluetooth, where HCI is the industry standard which > > is supported by most Bluetooth chips, thus BlueZ support it of course. > We plan to implement the NFC HCI (as in ETSI 102 622) code as a kernel > component, and we're currently working on that. HCI NFC based chipsets > will register against this layer which will then talk to the NFC core > layer. > The same architecture would hopefully work with NCI, although due to the > lack of currently available public NCI specs, I can't guarantee that it > won't require some small adjustments. > > > Doesn't it make more sense to make the userspace interface more similar > > to the NCI? > Could you please point us at a publically available description of that > interface ? You can download latest NCI spec and check its current status in the NFC forum website at: http://www.nfc-forum.org/home/ > > Cheers, > Samuel. > Thanks & BR, Ilan -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
