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NFC: NCI: Simplify NCI SPI to become a simple framing/checking layer

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NCI SPI layer should not manage the nci dev, this is the job of the nci
chipset driver. This layer should be limited to frame/deframe nci
packets, and optionnaly check integrity (crc) and manage the ack/nak
protocol.

The NCI SPI must not be mixed up with an NCI dev. spi_[dev|device] are
therefore renamed to a simple spi for more clarity.
The header and crc sizes are moved to nci.h so that drivers can use
them to reserve space in outgoing skbs.
nci_spi_send() is exported to be accessible by drivers.

Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Eric Lapuyade
2013-09-05 11:02:21 +02:00
committed by Samuel Ortiz
parent 08f13acff9
commit fa544fff62
3 changed files with 70 additions and 155 deletions
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4
include/net/nfc/nci.h
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@@ -166,6 +166,10 @@
#define NCI_GID_NFCEE_MGMT 0x2
#define NCI_GID_PROPRIETARY 0xf
/* ----- NCI over SPI head/crc(tail) room needed for outgoing frames ----- */
#define NCI_SPI_HDR_LEN 4
#define NCI_SPI_CRC_LEN 2
/* ---- NCI Packet structures ---- */
#define NCI_CTRL_HDR_SIZE 3
#define NCI_DATA_HDR_SIZE 3