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    SubjectRe: [PATCH] NFC: Driver for Inside Secure MicroRead NFC chip
    On Fri, 18 Mar 2011 11:40:24 +0100 Waldemar Rymarkiewicz wrote:

    > Add new driver for MicroRead NFC chip connected to i2c bus.
    >
    > See Documentation/nfc/nfc-microread.txt.
    >
    > Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
    > ---
    > Documentation/nfc/nfc-microread.txt | 46 ++++
    > drivers/nfc/Kconfig | 10 +
    > drivers/nfc/Makefile | 1 +
    > drivers/nfc/microread.c | 465 +++++++++++++++++++++++++++++++++++
    > include/linux/nfc/microread.h | 31 +++
    > 5 files changed, 553 insertions(+), 0 deletions(-)
    > create mode 100644 Documentation/nfc/nfc-microread.txt
    > create mode 100644 drivers/nfc/microread.c
    > create mode 100644 include/linux/nfc/microread.h
    >
    > diff --git a/Documentation/nfc/nfc-microread.txt b/Documentation/nfc/nfc-microread.txt
    > new file mode 100644
    > index 0000000..e15c49c
    > --- /dev/null
    > +++ b/Documentation/nfc/nfc-microread.txt
    > @@ -0,0 +1,46 @@
    > +Kernel driver for Inside Secure MicroRead Near Field Communication chip
    > +
    > +General
    > +-------
    > +
    > +microread is the RF chip that uses Near Field Communication (NFC) for proximity
    > +transactions and interactions.
    > +
    > +Please visit Inside Secure webside for microread specification:

    website (or web site)

    > +http://www.insidesecure.com/eng/Products/NFC-Products/MicroRead
    > +
    > +
    > +The Driver
    > +----------
    > +
    > +The microread driver can be found under drivers/nfc/microread.c and it's
    > +compiled as a module named "microread".
    > +
    > +The driver supports i2c interface only.
    > +
    > +The userspace application can use /dev/microread device to control the chip by
    > +HCI messages. In a typical scenario application will open() /dev/microread,
    > +reset the chip useing ioctl() interface then poll() the device to check if

    using

    > +writing/reaing is possible.Finally, will read/write data (HCI) from/to the chip.

    reading is possible. Finally, it will

    > +
    > +Note that only one application can use the /dev/microread at the time.
    > +
    > +The driver waits for microread chip interrupt which occures if there are some

    occurs

    > +data to be read. Then, poll() will indicate that fact to the userspace.
    > +
    > +The application can use ioctl(MICROREAD_IOC_RESET)to reset the hardware.

    _RESET) to reset

    > +
    > +
    > +Platform Data
    > +-------------
    > +
    > +The below platform data should be set when configuring board.
    > +
    > +struct microread_nfc_platform_data {
    > + unsigned int rst_gpio;
    > + unsigned int irq_gpio;
    > + unsigned int ioh_gpio;
    > + int (*request_hardware) (struct i2c_client *client);
    > + void (*release_hardware) (void);
    > +};
    > +


    ---
    ~Randy
    *** Remember to use Documentation/SubmitChecklist when testing your code ***


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