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2012-06-04NFC: Monitor pn533 target modeSamuel Ortiz1-1/+22
When receiving a DEP link down event, we should cancel all pending URBs if we're activated as a target or if we're an initiator. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-06-04NFC: Convert pn533 from semaphore to mutexSamuel Ortiz1-7/+7
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-06-04NFC: Set the proper baud rate when trying to activate pn533 targetsSamuel Ortiz1-2/+23
We get the right baud rate from the last polled modulation. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-06-04NFC: Implement pn533 polling loopSamuel Ortiz1-126/+161
After going through all the modulations, the pn533 driver spends 2 seconds listening for targets. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-06-04NFC: Add type A and type F parameters for pn533 target modeSamuel Ortiz1-1/+24
Without those settings several devices will not activate pn533 as a target. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-06-04NFC: Add passive initiator data for pn533Samuel Ortiz1-5/+18
When trying to enable a DEP link as a passive initiator, pn533 needs to provide the polling request command payload. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-06-04NFC: Configure pn533 RF timingsSamuel Ortiz1-0/+25
Those define the ATR_RES response timeout after which the pn533 considers the target to be mute. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-06-04NFC: Unregister device if pn533 initial configuration failsSamuel Ortiz1-1/+5
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-06-04NFC: Reset poll mod list when stopping pn533 pollSamuel Ortiz1-0/+2
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-06-04NFC: Implement the pn533 target mode Tx opSamuel Ortiz1-9/+73
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-06-04NFC: Implement the pn533 target mode data fetching routineSamuel Ortiz1-5/+80
This one needs to be called as soon as we are activated as a target, for the pn533 to receive the first SYMM and keep the LLCP link alive. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-06-04NFC: Introduce target mode tx opsSamuel Ortiz1-4/+4
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 activation netlink eventSamuel Ortiz1-2/+25
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: Implement pn533 target mode polling loopSamuel Ortiz1-5/+104
We only want to support p2p target mode for now, no host card emulation. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-06-04NFC: Add target mode protocols to the polling loop startup routineSamuel Ortiz2-14/+35
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-05-25NFC: potential integer overflow problem in check_crc()Dan Carpenter1-1/+1
If "buf[0]" is 255 then "len" gets set to 0. The call to "crc_ccitt(0xffff, buf, len - 2);" casts the "len - 2" to a high positive number which is ugly. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-05-15NFC: HCI based pn544 driverEric Lapuyade3-0/+961
This is an NFC driver for NXP pn544. Unlike pn544.c, this one is based on the NFC HCI and SHDLC kernel layers. 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 unneeded pn533 dev NULL checkDan Carpenter1-3/+0
container_of() works by subtracting the offset of the member. The math can't really return a zero here. Sometimes people check it when they actually meant to check something else but in this case we can just remove the check. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.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 Lapuyade1-8/+8
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>
2012-04-12NFC: pn533 Rx chaining supportSamuel Ortiz1-16/+128
When buffers on the receiption path exceed 262 bytes, the pn533 uses a chaining mechanism where the initiator has to send NULL data frames to fetch the remaining frames. We do that from a workqueue context while holding the cmd lock. Once the MI bit is gone, we aggregate the queued received skbs. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-04-12NFC: Convert pn533 from tasklet to workqueuesSamuel Ortiz1-38/+48
There is no need for soft IRQ contexts, and workqueues are more flexible. 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 Ortiz1-15/+5
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>
2012-03-06NFC: Export NFCID when detecting a p2p target with pn533Samuel Ortiz1-0/+2
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-03-06NFC: Export Jewel/Topaz ID from pn533Samuel Ortiz1-0/+2
The jewel ID is the NFCID1 for Topaz NFC tags. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-03-06NFC: Export sensf from pn533Samuel Ortiz1-0/+3
sensf is the detection response for Felica NFC tags. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-03-06NFC: Clear pn533 target structureSamuel Ortiz1-0/+2
The polled target structure should be memset to 0 in order to avoid sel_res and sens_res garbage. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-03-06NFC: Export NFCID1 from pn533Samuel Ortiz1-0/+2
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-01-24NFC: Free sk_buff if nfcwilink_send failsIlan Elias1-2/+4
Free sk_buff if nfcwilink_send fails. Signed-off-by: Ilan Elias <ilane@ti.com> Acked-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-01-24NFC: Download TI NFC init scriptIlan Elias1-4/+284
Download TI NFC init script during nfcwilink open operation, after the NFC channel is registered with TI shared transport. TI NFC init script is written in BTS format. First, read the chip version via a special vendor specific command. Second, we request the relevant BTS file from the user space, and then send the BTS commands to the chip. Signed-off-by: Ilan Elias <ilane@ti.com> Acked-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-01-24NFC: Add endian annotations to nfcwilink driverIlan Elias1-5/+6
Add endian annotations to TI nfcwilink driver. Signed-off-by: Ilan Elias <ilane@ti.com> Acked-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-01-07Merge branch 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-coreLinus Torvalds1-18/+1
* 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (73 commits) arm: fix up some samsung merge sysdev conversion problems firmware: Fix an oops on reading fw_priv->fw in sysfs loading file Drivers:hv: Fix a bug in vmbus_driver_unregister() driver core: remove __must_check from device_create_file debugfs: add missing #ifdef HAS_IOMEM arm: time.h: remove device.h #include driver-core: remove sysdev.h usage. clockevents: remove sysdev.h arm: convert sysdev_class to a regular subsystem arm: leds: convert sysdev_class to a regular subsystem kobject: remove kset_find_obj_hinted() m86k: gpio - convert sysdev_class to a regular subsystem mips: txx9_sram - convert sysdev_class to a regular subsystem mips: 7segled - convert sysdev_class to a regular subsystem sh: dma - convert sysdev_class to a regular subsystem sh: intc - convert sysdev_class to a regular subsystem power: suspend - convert sysdev_class to a regular subsystem power: qe_ic - convert sysdev_class to a regular subsystem power: cmm - convert sysdev_class to a regular subsystem s390: time - convert sysdev_class to a regular subsystem ... Fix up conflicts with 'struct sysdev' removal from various platform drivers that got changed: - arch/arm/mach-exynos/cpu.c - arch/arm/mach-exynos/irq-eint.c - arch/arm/mach-s3c64xx/common.c - arch/arm/mach-s3c64xx/cpu.c - arch/arm/mach-s5p64x0/cpu.c - arch/arm/mach-s5pv210/common.c - arch/arm/plat-samsung/include/plat/cpu.h - arch/powerpc/kernel/sysfs.c and fix up cpu_is_hotpluggable() as per Greg in include/linux/cpu.h
2011-12-14NFC: DEP link hook implementation for pn533Samuel Ortiz1-0/+159
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 Ortiz1-1/+6
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 tx skb allocation routineSamuel Ortiz1-1/+1
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>
2011-11-30NFC: pn533: Staticise pn533_data_exchange()Axel Lin1-1/+1
It is not used outside this driver so no need to make the symbol global. Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-11-18USB: convert some miscellanies drivers to use module_usb_driver()Greg Kroah-Hartman1-18/+1
This converts the remaining USB drivers in the kernel to use the module_usb_driver() macro which makes the code smaller and a bit simpler. Added bonus is that it removes some unneeded kernel log messages about drivers loading and/or unloading. Cc: Guenter Roeck <guenter.roeck@ericsson.com> Cc: Jean Delvare <khali@linux-fr.org> Cc: Ben Dooks <ben-linux@fluff.org> Cc: Till Harbaum <till@harbaum.org> Cc: Karsten Keil <isdn@linux-pingi.de> Cc: Chris Ball <cjb@laptop.org> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Lauro Ramos Venancio <lauro.venancio@openbossa.org> Cc: Aloisio Almeida Jr <aloisio.almeida@openbossa.org> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Steve Glendinning <steve.glendinning@smsc.com> Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Cc: Evgeniy Polyakov <zbr@ioremap.net> Cc: Wim Van Sebroeck <wim@iguana.be> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jesper Juhl <jj@chaosbits.net> Cc: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Cc: Jamie Iles <jamie@jamieiles.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-31drivers/nfc: add module.h to nfcwilink.cPaul Gortmaker1-0/+1
This is a full module, with module_init() and module_exit() and so it needs module.h called out for inclusion. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-09-21nfc: NFC_WILINK depends on NFC_NCIRandy Dunlap1-1/+1
nwcwilink.c uses nci_*() interfaces, so it should depend on NFC_NCI. Fixes these build errors: ERROR: "nci_register_device" [drivers/nfc/nfcwilink.ko] undefined! ERROR: "nci_allocate_device" [drivers/nfc/nfcwilink.ko] undefined! ERROR: "nci_recv_frame" [drivers/nfc/nfcwilink.ko] undefined! ERROR: "nci_free_device" [drivers/nfc/nfcwilink.ko] undefined! ERROR: "nci_unregister_device" [drivers/nfc/nfcwilink.ko] undefined! Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-20NFC: driver for TI shared transportIlan Elias3-0/+354
Signed-off-by: Ilan Elias <ilane@ti.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-20NFC: move nfc.h from include/net to include/net/nfcIlan Elias1-1/+1
The file nfc.h was moved from include/net to include/net/nfc, since new NFC header files will be added to include/net/nfc. Signed-off-by: Ilan Elias <ilane@ti.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-20NFC: Add dev_up and dev_down control operationsIlan Elias1-0/+2
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 Ortiz1-14/+3
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>
2011-07-26NFC: pn533: use after free in pn533_disconnect()Dan Carpenter1-1/+1
We freed "dev" on the line before. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-05NFC: pn533: add NXP pn533 nfc device driverAloisio Almeida Jr3-0/+1643
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 subsystem coreLauro Ramos Venancio2-13/+5
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>
2011-02-25drivers/nfc/pn544.c: add missing regulatorMatti J. Aaltonen1-1/+3
The regulator framework is used for power management. The regulators are only named in the driver code, the actual control stuff is in the board file for each architecture or use case. The PN544 chip has three regulators that can be controlled or not - depending on the architecture where the chip is being used. So some of the regulators may not be controllable. In our current case the third regulator, which was missing from the code, went unnoticed because we didn't need to control it. To be as general as possible - in this respect - the driver needs to list all regulators. Then the board file can be used to actually set the usage. Signed-off-by: Matti J. Aaltonen <matti.j.aaltonen@nokia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-02-25drivers/nfc/Kconfig: use full form of the NFC acronymMatti J. Aaltonen1-1/+1
Spell out the NFC acronym when it's shown for the first time. Signed-off-by: Matti J. Aaltonen <matti.j.aaltonen@nokia.com> Acked-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-16drivers/nfc/pn544.c: fix min_t warningsAndrew Morton1-1/+1
Fix these: drivers/nfc/pn544.c: In function 'pn544_read': drivers/nfc/pn544.c:356: warning: comparison of distinct pointer types lacks a cast drivers/nfc/pn544.c:377: warning: comparison of distinct pointer types lacks a cast drivers/nfc/pn544.c: In function 'pn544_write': drivers/nfc/pn544.c:463: warning: comparison of distinct pointer types lacks a cast drivers/nfc/pn544.c:485: warning: comparison of distinct pointer types lacks a cast Cc: "Matti J. Aaltonen" <matti.j.aaltonen@nokia.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-13NFC: Driver for NXP Semiconductors PN544 NFC chip.Matti J. Aaltonen3-0/+926
Creates a new "Near Field Communication" subsystem in drivers/nfc. http://en.wikipedia.org/wiki/Near_Field_Communication is useful ;) This is a driver for the pn544 NFC device. The driver transfers ETSI messages between the device and the user space. Signed-off-by: Matti J. Aaltonen <matti.j.aaltonen@nokia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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