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>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/nfc/trf7970a.c b/drivers/nfc/trf7970a.c
index 0d62d45d6884..516d0a616cbe 100644
--- a/drivers/nfc/trf7970a.c
+++ b/drivers/nfc/trf7970a.c
@@ -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;