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    SubjectRe: [PATCH] NFC: Driver for Inside Secure MicroRead NFC chip
    On Tue, Mar 29, 2011 at 01:05:02PM +0200, Arnd Bergmann wrote:
    > On Tuesday 29 March 2011, wrote:
    > > >Yes, NFC seems to be a good fit for a new socket family.
    > > >Especially if we ever want to have a proper NFC p2p support
    > > >from the kernel.
    > > >Sending HCI commands should be done through a dedicated
    > > >netlink socket too.
    > > >
    > > >I am currently strting to work on such solution, and I hope to
    > > >be able to come up with a basic prototype for it in a few weeks.
    > >
    > > What about common drivers interface in this case.
    > > Should we go for common /dev/nfcX interface as well?
    > I fear there can only be one. A good implementation of a socket
    > interface would mean that there is no need for a character device.
    My idea of an initial NFC subsystem architecture was actually the following
    - A core NFC layer against which NFC drivers would register.
    - A netlink socket for handling the HCI commands. That would put a big part of
    the NFC HCI layer in kernel land and could potentially simplify the existing
    NFC stacks.
    - A socket family for the LLCP abstraction, a.k.a. NFC peer to peer mode.

    We can start working on the first 2 items and leave the last one as a future
    enhancement, since what NFC is currently mostly used for is tag
    reading/writing and smartcard emulation.

    Basically, we'd replace the current character device option with a netlink
    one, allowing for a single kernel entry point for multiple applications
    willing to do NFC.


    Intel Open Source Technology Centre

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