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2012-10-02workqueue: avoid using deprecated functionsLinus Torvalds
The network merge brought in a few users of functions that got deprecated by the workqueue cleanups: the 'system_nrt_wq' is now the same as the regular system_wq, since all workqueues are now non- reentrant. Similarly, remove one use of flush_work_sync() - the regular flush_work() has become synchronous, and the "_sync()" version is thus deprecated as being superfluous. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-09-24NFC: Use system_nrt_wq instead of custom onesTejun Heo
NFC is using a number of custom ordered workqueues w/ WQ_MEM_RECLAIM. WQ_MEM_RECLAIM is unnecessary unless NFC is gonna be used as transport for storage device, and all use cases match one work item to one ordered workqueue - IOW, there's no actual ordering going on at all and using system_nrt_wq gives the same behavior. There's nothing to be gained by using custom workqueues. Use system_nrt_wq instead and drop all the custom ones. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09NFC: Add netlink module alias for NFCSamuel Ortiz
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09NFC: Add modules alias for NFC socketsSamuel Ortiz
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09NFC: nfc_driver_failure() implementationEric Lapuyade
If the device is polling we sent a 0 target found event. Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09NFC: nfc_targets_found() should accept zero target foundEric Lapuyade
The semantics for a zero target found event is that the polling operation could not complete. Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09NFC: Core must test the device polling state inside the device lockEric Lapuyade
There can ever be only one call to nfc_targets_found() after polling has been engaged. This could be from a target discovered event from the driver, or from an error handler to notify poll will never complete. Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09NFC: Driver failure APIEric Lapuyade
This API should be used by drivers, HCI, SHDLC or NCI stacks to report an unrecoverable error. Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-06-04NFC: Call the DEP link down ops even when in target modeSamuel Ortiz
Even in target mode we need to let the driver know that we want to bring the DEP link down. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-06-04NFC: Introduce target mode rx data callbackSamuel Ortiz
This routine will be called by drivers whenever they receive data in target mode. This should be unexpected events and as such should be handled by a standalone API (i.e. not as a callback pointer from an existing API). 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: Set the NFC device RF mode appropriatelySamuel Ortiz
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-06-04NFC: Add target mode activation netlink eventSamuel Ortiz
Userspace gets a netlink event upon target mode activation. The LLCP layer is also signaled when we get an ATR_REQ in order to get the remote general bytes. 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>
2012-06-04NFC: Export LLCP general bytes getterSamuel Ortiz
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-05-15NFC: Specify usage for targets found and target lost eventsEric Lapuyade
It is now specified that nfc_target_found() and nfc_target_lost() core functions must not be called from an atomic context. This allow us to serialize calls and protect the targets table using the nfc device lock instead of a spinlock. 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>
2012-04-18Merge branch 'master' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem Conflicts: drivers/net/wireless/iwlwifi/iwl-testmode.c include/net/nfc/nfc.h net/nfc/netlink.c net/wireless/nl80211.c
2012-04-15net: cleanup unsigned to unsigned intEric Dumazet
Use of "unsigned int" is preferred to bare "unsigned" in net tree. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-12NFC: Add Core support to generate tag lost eventEric Lapuyade
Some HW/drivers get notifications when a tag moves out of the radio field. This notification is now forwarded to user space through netlink. 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: Changed target activated state logicEric 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>
2012-04-12NFC: Fix next target_idx type and rename for clarityEric 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>
2012-04-12NFC: The core part should generate the target indexSamuel Ortiz
The target index can be used by userspace to uniquely identify a target and thus should be kept unique, per NFC adapter. Moreover, some protocols do not provide a logical index when discovering new targets, so we have to generate one for them. For NCI or pn533 to fetch their logical index, we added a logical_idx field to the target structure. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-04-12NFC: Export target lost functionEric Lapuyade
NFC drivers will call this routine when they detect that a tag leaves the RF field. This will eventually lead to the corresponding netlink event to be sent. 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>
2012-03-06NFC: Core code identation fixesSamuel Ortiz
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-03-06NFC: Remove the rf mode parameter from the DEP link up routineSamuel Ortiz
When calling nfc_dep_link_up, we implicitely are in initiator mode. Which means we also can provide the general bytes as a function argument, as all drivers will eventually request them. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-01-24NFC: NFC core layer should not set the target_idxIlan Elias
The NFC core layer should not set the target_idx. Instead, the driver layer (e.g. NCI, PN533) should set the target_idx, so that it will be able to identify the target when its I/F (e.g. activate_target) is called. This is required in order to support multiple targets. Note that currently supported drivers (PN533 and NCI) don't use the target_idx in their implementation. Signed-off-by: Ilan Elias <ilane@ti.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-12-14NFC: Initial LLCP supportSamuel Ortiz
This patch is an initial implementation for the NFC Logical Link Control protocol. It's also known as NFC peer to peer mode. This is a basic implementation as it lacks SDP (services Discovery Protocol), frames aggregation support, and frame rejecion parsing. Follow up patches will implement those missing features. This code has been tested against a Nexus S phone implementing LLCP 1.0. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-12-14NFC: Set and get DEP general bytesSamuel Ortiz
Without an API for setting and getting the local and remote general bytes, drivers won't be able to properly establish a DEP link. This API also allows them to propagate the remote general bytes they get from the DEP link establishment up to the LLCP layer. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-12-14NFC: Add a DEP link control netlink commandSamuel Ortiz
NFC-DEP (Data Exchange Protocol) is an NFC MAC layer. This command allows to enable and disable the DEP link on to which e.g. LLCP can run. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-12-14NFC: Add tx skb allocation routineSamuel Ortiz
This is a factorization of the current rawsock tx skb allocation routine, as it will be used by the LLCP code. We also rename nfc_alloc_skb to nfc_alloc_recv_skb for consistency sake. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-12-14NFC: Add function name to the NFC pr_fmt() routineSamuel Ortiz
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-11-30nfc: Remove unused nfc_printk and nfc_<level> macrosJoe Perches
All uses have been removed, so killing what's not necessary. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-11-30nfc: Convert nfc_dbg to pr_debugJoe Perches
Using the standard debugging mechanisms is better than subsystem specific ones when the subsystem doesn't use a specific struct. Coalesce long formats. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-11-30nfc: Use standard logging stylesJoe Perches
Using the normal logging styles is preferred over subsystem specific styles when the subsystem does not take a specific struct. Convert nfc_<level> specific messages to pr_<level> Add newlines to uses. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-20NFC: Add dev_up and dev_down control operationsIlan Elias
Add 2 new nfc control operations: dev_up to turn on the nfc device dev_down to turn off the nfc device Signed-off-by: Ilan Elias <ilane@ti.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-08-24NFC: Reserve tx head and tail roomSamuel Ortiz
We can have the NFC core layer allocating the tx head and tail room for the drivers and avoid 1 or more SKBs copy on write on the Tx path. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-05NFC: add the NFC socket raw protocolLauro Ramos Venancio
This socket protocol is used to perform data exchange with NFC targets. Signed-off-by: Lauro Ramos Venancio <lauro.venancio@openbossa.org> Signed-off-by: Aloisio Almeida Jr <aloisio.almeida@openbossa.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-05NFC: add NFC socket familyAloisio Almeida Jr
Signed-off-by: Lauro Ramos Venancio <lauro.venancio@openbossa.org> Signed-off-by: Aloisio Almeida Jr <aloisio.almeida@openbossa.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-05NFC: add nfc generic netlink interfaceLauro Ramos Venancio
The NFC generic netlink interface exports the NFC control operations to the user space. Signed-off-by: Lauro Ramos Venancio <lauro.venancio@openbossa.org> Signed-off-by: Aloisio Almeida Jr <aloisio.almeida@openbossa.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Reviewed-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-05NFC: add nfc subsystem coreLauro Ramos Venancio
The NFC subsystem core is responsible for providing the device driver interface. It is also responsible for providing an interface to the control operations and data exchange. Signed-off-by: Lauro Ramos Venancio <lauro.venancio@openbossa.org> Signed-off-by: Aloisio Almeida Jr <aloisio.almeida@openbossa.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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