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NFC: trf7970a: Add support for Type 4A Tags 

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>
This commit is contained in:
Mark A. Greer 2014-03-10 11:56:23 -07:00 committed by Samuel Ortiz
parent 165063f1da
commit 8006289108
1 changed files with 3 additions and 1 deletions
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4
drivers/nfc/trf7970a.c
View File

@ -87,7 +87,8 @@
* the trf7970a_per_cmd_config() routine.
*/
#define TRF7970A_SUPPORTED_PROTOCOLS NFC_PROTO_MIFARE_MASK
#define TRF7970A_SUPPORTED_PROTOCOLS \
(NFC_PROTO_MIFARE_MASK | NFC_PROTO_ISO14443_MASK)
/* TX data must be prefixed with a FIFO reset cmd, a cmd that depends
* on what the current framing is, the address of the TX length byte 1
@ -821,6 +822,7 @@ static int trf7970a_config_framing(struct trf7970a *trf, int framing)
trf->iso_ctrl |= TRF7970A_ISO_CTRL_RX_CRC_N;
break;
case NFC_DIGITAL_FRAMING_NFCA_STANDARD_WITH_CRC_A:
case NFC_DIGITAL_FRAMING_NFCA_T4T:
trf->tx_cmd = TRF7970A_CMD_TRANSMIT;
trf->iso_ctrl &= ~TRF7970A_ISO_CTRL_RX_CRC_N;
break;