NFC: Add NCI over SPI send

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Before any operation, driver interruption is de-asserted to prevent
race condition between TX and RX.

The NCI over SPI header is added in front of NCI packet.
If acknowledged mode is set, CRC-16-CCITT is added to the packet.
Then the packet is forwarded to SPI module to be sent.

A delay after the transaction is added.
This delay is determined by the driver during nci_spi_allocate_device()
call and can be 0.

After data has been sent, driver interruption is re-asserted.

If acknowledged mode is set, nci_spi_send will block until
acknowledgment is received.

Signed-off-by: Frederic Danis <frederic.danis@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

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This commit is contained in:

Frederic Danis 2013-05-29 15:35:03 +02:00 • committed by Samuel Ortiz

parent 8a00a61b0e

commit ee9596d467

2 changed files with 73 additions and 1 deletions

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3

include/net/nfc/nci_core.h

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