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authorFrederic Danis <frederic.danis@linux.intel.com>2013-05-29 15:35:04 +0200
committerSamuel Ortiz <sameo@linux.intel.com>2013-06-14 13:44:16 +0200
commit391d8a2da787257aeaf952c974405b53926e3fb3 (patch)
tree038e24a044d3f3780c76d61a13f65c038e8c05bc /crypto
parentee9596d467e4d05c77a8c883aeeb5b74d1a3cd31 (diff)
NFC: Add NCI over SPI receive
Before any operation, driver interruption is de-asserted to prevent race condition between TX and RX. Transaction starts by emitting "Direct read" and acknowledged mode bytes. Then packet length is read allowing to allocate correct NCI socket buffer. After that payload is retrieved. A delay after the transaction can be added. This delay is determined by the driver during nci_spi_allocate_device() call and can be 0. If acknowledged mode is set: - CRC of header and payload is checked - if frame reception fails (CRC error): NACK is sent - if received frame has ACK or NACK flag: unblock nci_spi_send() Payload is passed to NCI module. At the end, driver interruption is re asserted. Signed-off-by: Frederic Danis <frederic.danis@linux.intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'crypto')
0 files changed, 0 insertions, 0 deletions