Messages in this thread | | | Subject | Re: [PATCH v2 1/3] usb: gadget: ccid: add support for USB CCID Gadget Device | From | Andrzej Pietrasiewicz <> | Date | Mon, 28 May 2018 09:04:51 +0200 |
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Mi Marcus,
W dniu 26.05.2018 o 23:19, Marcus Folkesson pisze: > Chip Card Interface Device (CCID) protocol is a USB protocol that > allows a smartcard device to be connected to a computer via a card > reader using a standard USB interface, without the need for each manufacturer > of smartcards to provide its own reader or protocol. > > This gadget driver makes Linux show up as a CCID device to the host and let a > userspace daemon act as the smartcard. > > This is useful when the Linux gadget itself should act as a cryptographic > device or forward APDUs to an embedded smartcard device. > > Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com> > ---
> > +config USB_CONFIGFS_CCID > + bool "Chip Card Interface Device (CCID)" > + depends on USB_CONFIGFS > + select USB_F_CCID > + help > + The CCID function driver provides generic emulation of a > + Chip Card Interface Device (CCID). > + > + You will need a user space server talking to /dev/ccidg*, > + since the kernel itself does not implement CCID/TPDU/APDU > + protocol.
Your function needs a userspace daemon to work. It seems you want to use FunctionFS for such a purpose instead of creating a new function.
Andrzej
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