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2012-07-10NFC: Fix order of arguments to list_add_tail() when queueing HCP framesMathias Jeppsson
The HCP message should be added to transmit queue, not the other way around. Signed-off-by: Mathias Jeppsson <mathias.jeppsson@sonymobile.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-07-10NFC: Fix empty HCI message list checkMathias Jeppsson
list_first_entry() will never return NULL. Instead use list_for_each_entry_safe() to iterate through the list. Signed-off-by: Mathias Jeppsson <mathias.jeppsson@sonymobile.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-07-09NFC: Add ISO 14443 type B protocolSamuel Ortiz
Some devices (e.g. Sony's PaSoRi) can not do type B polling, so we have to make a distinction between ISO14443 type A and B poll modes. Cc: Eric Lapuyade <eric.lapuyade@intel.com> Cc: Ilan Elias <ilane@ti.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09NFC: Allow HCI driver to pre-open pipes to some gatesEric Lapuyade
Some NFC chips will statically create and open pipes for both standard and proprietary gates. The driver can now pass this information to HCI such that HCI will not attempt to create and open them, but will instead directly use the passed pipe ids. Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09NFC: Implement HCI driver or internal error managementEric Lapuyade
If there is an ongoing HCI command executing, it will be completed, thereby pushing the error up to the core. Otherwise, HCI will directly notify the core with the error. Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09NFC: Factorize HCI cmd completionEric Lapuyade
HCI cmd can be completed either from an HCI response or from an internal driver or HCI error. This requires to factorize the completion code outside of the device lock. Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09NFC: Changed HCI cmd execution completion result to std linux errnoEric Lapuyade
An HCI command can complete either from an HCI response (with an HCI result) or as a consequence of any other system error during processing. The completion therefore needs to take a standard errno code. The HCI response will convert its result to a standard errno before calling the completion. Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09NFC: Implement HCP reaggregation allocation error caseEric Lapuyade
We can now report an ENOMEM error up to the HCI layer. Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09NFC: Remove an impossible HCI error caseEric Lapuyade
nfc_hci_recv_frame can not be called with a NULL skb. Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09NFC: Handle SHDLC RSET frames from an SHDLC connected chipEric Lapuyade
shdlc reset may leave HCI in an inconsistent state by loosing parts of HCI frames. Handle this case by reporting an unrecoverable error to HCI. Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09NFC: Removed addressed shdlc TODOsEric Lapuyade
The questions asked in the comments have been answered and addressed. Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09NFC: Prepare asynchronous error management for driver and shdlcEric Lapuyade
Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-06-04NFC: Introduce target mode tx opsSamuel Ortiz
And rename the initiator mode data exchange ops for consistency sake. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-06-04NFC: Add target mode protocols to the polling loop startup routineSamuel Ortiz
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-05-15NFC: HCI drivers don't have to keep track of polling stateEric Lapuyade
The NFC core code already does that for them. 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>
2012-05-15NFC: HCI ops should not be exposed globallyH Hartley Sweeten
The variable 'hci_nfc_ops' is only referenced in this file and should be marked static to prevent it from being exposed globally. Quites the sparse warning: warning: symbol 'hci_nfc_ops' was not declared. Should it be static? Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Lauro Ramos Venancio <lauro.venancio@openbossa.org> Cc: Aloisio Almeida Jr <aloisio.almeida@openbossa.org> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-05-15NFC: Add HCI/SHDLC support to let driver check for tag presenceEric Lapuyade
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>
2012-05-15NFC: Remove useless HCI private nfc target tableEric Lapuyade
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>
2012-05-15NFC: Cache the core NFC active target pointer instead of its indexEric Lapuyade
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>
2012-05-15NFC: Select CRC_CCITT for SHDLC link layer of HCI based driversMarcel Holtmann
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>
2012-04-12NFC: SHDLC implementationEric Lapuyade
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>
2012-04-12NFC: HCI supportEric Lapuyade
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>