Commit Graph

5 Commits (d4ccb132801aeeb2cfd18c4b4b7fa0043ab37f80)

Author SHA1 Message Date
Eric Lapuyade addfabf98d NFC: Remove useless HCI private nfc target table
Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-05-15 17:28:00 -04:00
Eric Lapuyade 9009943326 NFC: Cache the core NFC active target pointer instead of its index
The NFC Core now caches the active nfc target pointer, thereby avoiding
the need to lookup the target table for each invocation of a driver ops.
Consequently, pn533, HCI and NCI now directly receive an nfc_target
pointer instead of a target index.

Cc: Ilan Elias <ilane@ti.com>
Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-05-15 17:27:59 -04:00
Marcel Holtmann f3a138c10b NFC: Select CRC_CCITT for SHDLC link layer of HCI based drivers
The SHDLC link layer of HCI based drivers uses CRC-CCITT and thus
needs to select that kernel option.

Otherwise it ends up with this linking error:

net/built-in.o: In function `nfc_shdlc_add_len_crc':
net/nfc/hci/shdlc.c:113: undefined reference to `crc_ccitt'

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-05-15 17:27:28 -04:00
Eric Lapuyade eb738fe535 NFC: SHDLC implementation
Most NFC HCI chipsets actually use a simplified HDLC link layer to
carry HCI payloads.
This implementation registers itself as an HCI device on behalf of the
NFC driver.

Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-04-12 15:10:35 -04:00
Eric Lapuyade 8b8d2e08bf NFC: HCI support
This is an implementation of ETSI TS 102 622 specification.
Many NFC chipsets use HCI as the host <-> target protocol on top of a
serial link like i2c.

Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-04-12 15:10:34 -04:00