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SubjectRe: [PATCH] NFC: Driver for Inside Secure MicroRead NFC chip
On Fri, Mar 18, 2011 at 01:19:53PM +0100, Arnd Bergmann wrote:
> On Friday 18 March 2011, Waldemar Rymarkiewicz wrote:
> > Add new driver for MicroRead NFC chip connected to i2c bus.
> >
> > See Documentation/nfc/nfc-microread.txt.
>
> As I said in my first review and Alan also pointed out now, the
> most important change will be to add a common NFC core layer,
> before adding more hardware drivers.
>
> Also, regarding the user interface, we need to be really sure
> that this is the best way of talking to NFC devices. The interface
> you have today is a simple character device read/write kind,
> which may be the best thing if the protocol stack on top is
> really simple and there is never the need to have multiple
> applications talking to different endpoints on the wireless
> interface, and if there are no protocol headers being
> send over the character device interface.
>
> Otherwise, a better interface is probably to add a new network
> socket family and abstract the protocol layers in the kernel.

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.

Cheers,
Samuel.

--
Intel Open Source Technology Centre
http://oss.intel.com/


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