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path: root/drivers/nfc
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2014-05-26NFC: trf7970a: Add support for Felica Type 3 tagsMark A. Greer1-1/+12
Add support for the Felica protocol and Type 3 tags. Both 212 and 424 kbps are supported. Signed-off-by: Mark A. Greer <mgreer@animalcreek.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-05-26NFC: port100: Add support for type 4B tagThierry Escande1-1/+35
This patch adds support for ISO-DEP protocol over NFC-B rf technology by adding NFC_PROTO_ISO14443_B to the supported protocols and an entry for framing configuration. Signed-off-by: Thierry Escande <thierry.escande@linux.intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-05-20NFC: st21nfca: Add ISO15693 Reader/Writer supportChristophe Ricard1-1/+72
Add support for ISO/IEC 15693 RF technology and Type 5 tags. ISO15963 is using proprietary gate 12. Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-05-20NFC: st21nfca: Improve load_sessionChristophe Ricard1-2/+19
In case anybody uses previous patchset with the CLF, add a check to make sure missing pipe are created. st21nfca returns its pipe list in the creation order (most recent latest). Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-05-20NFC: dts: st21nfca: Add device-tree (Open Firmware) support to st21nfcaChristophe Ricard1-19/+87
Add functions to recover hardware resources from the device-tree when not provided by the platform data. Based on pn544 devicetree implementation Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-05-05NFC: st21nfca: Free buffer when a bad frame is detectedChristophe Ricard1-0/+1
When a bad frame is detected for a bad crc. We were reallocating and loosing the previous frame pointer. Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-05-05NFC: st21nfca: Synchronize i2c Tx and Rx pathChristophe Ricard1-0/+6
Stabilize communication by using a mutex. This avoids running a write transaction during a read retry or a read transaction during a write retry. Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-05-05NFC: st21nfca: Improved i2c Rx data correctness checkChristophe Ricard1-3/+26
A frame starts with ST21NFCA_SOF_EOF(0x7e) + 0x00. A frame ends with ST21NFCA_SOF_EOF(0x7e). It is possible that the i2c macrocell is stopped for other communication interfaces with highest priority(RF or SWP). This can be seen with some 0xFF data at the end of a received shdlc buffer. If this happen we need to discard the frame because the CLF will repeat it. In order to push accurate data to hci layer, we add the following fix: - Instead of looking for the first 0x7e in the frame, check that the last received byte is 0x7e. - Check that the first frame reception block start with start of frame(0x7e 0x00). If not, clear the buffer. - Check that the next frame reception block do not start with start of frame(0x7e). If so, clear the buffer. Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-05-05NFC: st21nfca: Fix st21nfca_hci_remove_len_crc tail room handlingChristophe Ricard1-12/+9
There is no byte stuffing when data are stored in skb. TAILROOM is 2 byte crc + 1 byte eof. st21nfca_hci_remove_len_crc was doing an incorrect operation on the TAILROOM data. If shdlc timer T2 is triggered, it will request to send the same data. Before every hci data was lost after st21nfca_hci_remove_len_crc. Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-05-05NFC: st21nfca: Fix incorrect byte stuffing revocationChristophe Ricard1-4/+3
Byte stuffing was not correctly removed after a i2c read operation. This was causing improper crc calculation when byte stuffing was applied to more than 1 byte. Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-05-05NFC: st21nfca: Remove few useless includeChristophe Ricard1-11/+0
Remove unneeded includes from i2c.c Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-04-22NFC: st21nfca: Improve st21nfca initialization by handling reboot properlyChristophe Ricard1-8/+39
Change in st21nfca_hci_platform_init in order to handle in a better way the internal reboot command. Once the reboot is completed, the driver expect to receive a 0x7e filled buffer. Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-04-22NFC: st21nfca: Reworked st21nfca_request_resourcesChristophe Ricard1-16/+26
Remove struct st21nfca_i2c_phy* as this parameter can be retrieve through i2c_get_clientdata(client) Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-04-22NFC: st21nfca: st21nfca_hci_i2c_probe returns st21nfca_hci_probe result.Christophe Ricard1-6/+1
st21nfca_hci_probe return 0 in case of successful call and a different value in any other cases. There is no need to check for st21nfca_hci_probe return as this will be checked after st21nfca_hci_i2c_probe is completed. Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-04-22NFC: st21nfca: Add __packed to struct st21nfca_pipe_infoChristophe Ricard1-1/+1
Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-04-22NFC: st21nfca: Remove sporadic wait_tab variable from functions.Christophe Ricard1-4/+3
wait_tab variable is already global and may create conflicts. Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-04-22NFC: st21nfca: Fix warning: array subscript is above array boundsChristophe Ricard1-3/+3
Fix "warning: array subscript is above array bounds" in load_session Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-04-22NFC: st21nfca: Fix sparse: cast to restricted __be16Christophe Ricard1-1/+1
Fixing "sparse: cast to restricted __be16" message when building with make C=1 CF=-D__CHECK_ENDIAN__ Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-04-22NFC: pn544_i2c: Fix null pointer exception when not using platform dataClement Perrochaud1-1/+5
Fixes a null pointer exception occurring when the IRQ request in pn544_hci_i2c_probe fails and no platform data is available. Signed-off-by: Clément Perrochaud <clement.perrochaud@nxp.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-04-22NFC: trf7970a: Add support for the ISO/IEC 14443-B and Type 4B tagsMark A. Greer1-1/+7
Now that the NFC digital layer has support for the ISO/IEC 14443-B protocol and type 4B tags, add the corresponding support to the trf7970a driver. Signed-off-by: Mark A. Greer <mgreer@animalcreek.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-04-22NFC: trf7970a: Add 'autosuspend-delay' DTS propertyMark A. Greer1-2/+17
The trf7970a driver currently uses a fixed autosuspend delay of 30 seconds. To enable users to customize the delay as they see fit, add support for the new 'autosuspend-delay' DTS property (part of the nfc node) which can override the default 30 seconds. Signed-off-by: Mark A. Greer <mgreer@animalcreek.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-04-22NFC: trf7970a: Don't return value from trf7970a_switch_rf_on()Mark A. Greer1-13/+6
trf7970a_switch_rf_on() no longer returns anything other than 0 so make it void and clean up the code that checks for errors when its called. Signed-off-by: Mark A. Greer <mgreer@animalcreek.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-04-22NFC: trf7970a: Add pm_runtime supportMark A. Greer1-37/+85
Add pm_runtime support by moving the code that enables the trf7970a to the pm_runtime hook routines. The pm_runtime 'autosuspend' feature is used so that the device isn't disabled until at least 30 seconds have passed since trf7970a_switch_rf_off() was last called. The result is that when trf7970a_switch_rf_on() is called, the device will be enabled and initialized (if it isn't already). When trf7970a_switch_rf_off() is called, it will turn off the RF immediately but leave the device enabled for at least 30 seconds. If 30 seconds have passed and the pm_runtime facility decides to suspend the driver, the device will be disabled then. Signed-off-by: Mark A. Greer <mgreer@animalcreek.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-04-22NFC: trf7970a: Turn RF on after hardware is configuredMark A. Greer1-5/+16
The NFC digital layer calls the 'switch_rf' hook to turn the RF on before it configures the RF technology and framing. There is potential to confuse a tag doing it this way so don't enable the RF until the RF technology and initial framing have been configured. Signed-off-by: Mark A. Greer <mgreer@animalcreek.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-04-22NFC: trf7970a: Set correct Vin voltage in Chip Status Control registerMark A. Greer1-3/+8
Currently, the trf7970a driver assumes that the Vin voltage is 5V when it writes to the 'Chip Status Control' register. That may not be correct so use the regulator facility to get the Vin voltage and set the VRS5_3 bit correctly when writing to that register. Signed-off-by: Mark A. Greer <mgreer@animalcreek.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-04-22NFC: trf7970a: Allow different Modulator and SYS_CLK Control register valuesMark A. Greer1-1/+4
Currently the driver writes the same value to the 'Modulator and SYS_CLK Control' register no matter what RF technology is being used. That works for now but new RF technologies (e.g., ISO/IEC 14443-B) will require different values to be written to that register. To support this, add a member to the trf7970a structure which is set by the RF technology handling code and used by the framing code when it writes to that register. Signed-off-by: Mark A. Greer <mgreer@animalcreek.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-04-22NFC: trf7970a: Set 'Modulator and SYS_CLK Control' after 'ISO Control'Mark A. Greer1-5/+5
Writing to the 'ISO Control' register may cause the contents of the 'Modulator and SYS_CLK Control' register to change so be sure to write to 'Modulator and SYS_CLK Control' after writing to 'ISO Control'. Note that writing to the 'Modulator and SYS_CLK Control' register shouldn't be necessary at all according to the trf790a manual but testing shows that it is necessary. Signed-off-by: Mark A. Greer <mgreer@animalcreek.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-04-22NFC: trf7970a: Only write 'ISO Control' when its changingMark A. Greer1-6/+19
The current code always writes to the 'ISO Control' register when the RF framing is set. That's not necessary since the register's value doesn't always change. Instead, only write to it when its value is actually being changed. Signed-off-by: Mark A. Greer <mgreer@animalcreek.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-04-22NFC: trf7970a: Reset FIFO when 'End of TX' Interrupt OccursMark A. Greer1-1/+3
Sometimes after sending a frame there is tx data leftover in the FIFO which the driver will think is part of the receive frame. That data can be cleared when an 'End of TX' interrupt is received by issuing the 'FIFO Reset' command. Signed-off-by: Mark A. Greer <mgreer@animalcreek.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-04-22NFC: trf7970a: Clear 'NFC Target Detection Level' registerMark A. Greer1-0/+5
Due to a trf7970a erratum, the 'NFC Target Detection Level' register (0x18) must be cleared after power-up. Signed-off-by: Mark A. Greer <mgreer@animalcreek.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-04-22NFC: trf7970a: Only abort a command if one is activeMark A. Greer1-1/+12
Only initiate the abort command process when there is an active command. If the abort process were started and there wasn't an active command then the next command issued by the digital layer would be incorrectly aborted. Signed-off-by: Mark A. Greer <mgreer@animalcreek.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-04-22NFC: trf7970a: Increase TRF7970A_WAIT_FOR_RX_DATA_TIMEOUT to 20 msMark A. Greer1-5/+5
After further testing periods of ~16 ms have been observed between interrupts indicating that there is receive data in the FIFO. To accomodate that, increase the time the driver waits before deciding there is no more data to receive to 20 ms. The macro that represents that delay is 'TRF7970A_WAIT_FOR_RX_DATA_TIMEOUT'. Signed-off-by: Mark A. Greer <mgreer@animalcreek.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-04-22NFC: pn544: i2c: Add device-tree (Open Firmware) support to PN544Clement Perrochaud1-17/+131
Add functions to recover hardware resources from the device-tree when not provided by the platform data. Signed-off-by: Clément Perrochaud <clement.perrochaud@nxp.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-04-22NFC: st21nfca: Implement load_session HCI hookChristophe Ricard1-1/+116
This implementation rely on the ST21NFCA_DEVICE_MGNT_GATE and ST21NFCA_DM_GETINFO proprietary gates commands. First we are retrieving a pipe list available on the CLF with the ST21NFCA_DM_GETINFO_PIPE_LIST parameter. A gate<->pipe table match is done with ST21NFCA_DM_GETINFO_PIPE_INFO for each pipe. If the pipe is created and open, we fill st21nfca_gates table. If the pipe is create but closed or is not created we keep the gate with NFC_HCI_INVALID_PIPE. Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-04-22NFC: ST21NFCA: Add driver for STMicroelectronics ST21NFCA NFC ChipChristophe Ricard7-0/+1221
Add driver for STMicroelectronics ST21NFCA NFC controller. ST21NFCA is using HCI protocol, shdlc as LLC layer & I2C as communication protocol. Adding support for Reader/Writer mode with Tag type 1/2/3/4 A & B. It is using proprietary gate 15 for ISO14443-3 such as type 1 & type 2 tags. It is using proprietary gate 14 for type F tags. ST21NFCA_DEVICE_MGNT_GATE gives access to proprietary CLF configuration. Standard gate for ISO14443-4 A (13) & B (11) are also used. ST21NFCA specific mecanism: One particular point to notice for the data handling is that frame does not contain any length value. Therefore the i2c part of this driver is managing the reception with a read length sequence until the end of frame (0x7e) is reached. In order to avoid conflict between sof & eof a mecanism called byte stuffing concist of an escape byte (0x7d) insertion before special byte (0x7e, 0x7d). The special byte is then xored with 0x20. In this driver, When data are available in the CLF, the interrupt gpio is driven to active state and triggered an interrupt. Once the i2c_master_recv start, the interrupt gpio is driven to idle state until its complete. If the frame is incomplete or data are still available, interrupts will be triggered again. Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-03-11NFC: trf7970a: Add ISO/IEC 15693 and Type 5 tag SupportMark A. Greer1-4/+148
Add support for ISO/IEC 15693 RF technology and Type 5 tags. Note that Type 5 tags used to be referred to as Type V tags. CC: Erick Macias <emacias@ti.com> CC: Felipe Balbi <balbi@ti.com> Signed-off-by: Mark A. Greer <mgreer@animalcreek.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-03-11NFC: trf7970a: Add support for Type 4A TagsMark A. Greer1-1/+3
Add support for Type 4A Tags which includes supporting the underlying ISO/IEC 14443-A protocol. Signed-off-by: Mark A. Greer <mgreer@animalcreek.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-03-11NFC: trf7970a: Add driver with ISO/IEC 14443 Type 2 Tag SupportMark A. Greer3-0/+1237
Add a driver for the Texas Instruments TRF7970a RFID/NFC/15693 transceiver. The driver currently supports ISO/IEC 14443 Type 2 tags only (MIFARE Ultralight and Ultralight C but not Classic). CC: Erick Macias <emacias@ti.com> CC: Felipe Balbi <balbi@ti.com> Signed-off-by: Mark A. Greer <mgreer@animalcreek.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-02-23NFC: pn533: Convert to use USB_DEVICE macroAxel Lin1-20/+8
Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-02-23NFC: port100: Convert to use USB_DEVICE macroAxel Lin1-4/+1
Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-02-16NFC: port100: Add support for type 4A tag platformThierry Escande1-1/+6
This adds support for ISO-DEP protocol over NFC-A rf technology. The port100 already supports NFC-A and ATS request and response for type 4A tags are handled at digital level. This patch adds NFC_PROTO_ISO14443 to the supported protocols and an entry for framing configuration which is the same as NFC-A standard frame with CRC handling. Signed-off-by: Thierry Escande <thierry.escande@linux.intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-02-16NFC: port100: Fix possible buffer overflowThierry Escande1-0/+13
The arrays for protocols and rf techs must define a number of entries corresponding to their maximum possible index values. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Thierry Escande <thierry.escande@linux.intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-02-16NFC: pn544: i2c: Support PN544 C3 secure firmware downloadArron Wang1-6/+174
PN544 C3 firmwares already contain the command frames to be sent, but as they may exceed the i2c maximum payload, we need to fragment them into secure chunks and send them through the secure write command. Signed-off-by: Arron Wang <arron.wang@intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-02-16NFC: pn544: Pass hardware variant information when downloading firmwareArron Wang3-3/+16
Different pn544 hardware variant may use different commands to download new firmwares. The C2 does a regular firmware download while the C3 uses a more secure protocol. As a consequence we need to pass the hardware variant from the HCI SW version command reply down to the pn544 i2c layer, in order to use the right protocol at run time. Signed-off-by: Arron Wang <arron.wang@intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-01-09NFC: nfcmrvl: Fix possible memory leak issueAmitkumar Karwar1-2/+7
This patch fixes memory leaks in the error paths of nfcmrvl_nci_register_dev() routine. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-01-07NFC: nfcmrvl: Add setup handlerAmitkumar Karwar2-0/+21
Marvell nfc device provides support for external coexistance control. It allows Device Host to inhibit the NFCC from polling when required by asserting a GPIO pin. A second pin allows the DH to have feedback on the current NFCC state. The required configuration for this feature is done in setup handler. Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-01-07NFC: nfcmrvl: Initial commit for Marvell NFC driverAmitkumar Karwar7-0/+680
This patch adds NFC support for Marvell 8897 NFC-over-USB chipset. Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-01-05NFC: port100: Fix device leakAlexey Khoroshilov1-0/+1
port100_probe() calls usb_get_dev(), but there is no usb_put_dev() in port100_disconnect(). The patch adds one. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-01-04NFC: pn533: Frame is invalid if ccid.datalen is 0Samuel Ortiz1-0/+3
Some ACR122 firmwares seem to send 0 length data frames. Before using that length as a data index, we check that it's not 0. If it is we report the frame as being invalid. Reported-by: Arthur Taylor <arthur@advancedtelematic.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2014-01-04NFC: pn544: Refactor hw_config valuesArman Uguray1-24/+24
Some of the EEPROM configurations that are assigned by the PN544 driver are set by the firmware and should not be modified by the driver. Others are certain user mode configurations that are currently getting set to values that shouldn't necessarily be dictated by the driver. This patch changes most user and system mode configurations to the firmware defaults. Signed-off-by: Arman Uguray <armansito@chromium.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
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