NFC: Add pn544 presence check for different targets

Signed-off-by: Arron Wang <arron.wang@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 28 insertions, 3 deletions

diff --git a/drivers/nfc/pn544_hci.c b/drivers/nfc/pn544_hci.c
index 554faf0a92d..b66d4681a57 100644
--- a/drivers/nfc/pn544_hci.c
+++ b/drivers/nfc/pn544_hci.c
@@ -118,6 +118,7 @@ enum pn544_state {
 #define PN544_HCI_EVT_RCV_DATA                  0x04
 #define PN544_HCI_EVT_CONTINUE_MI               0x05
 
+#define PN544_HCI_CMD_ATTREQUEST                0x12
 #define PN544_HCI_CMD_CONTINUE_ACTIVATION       0x13
 
 static struct nfc_hci_gate pn544_gates[] = {
@@ -976,9 +977,33 @@ static int pn544_hci_tm_send(struct nfc_hci_dev *hdev, struct sk_buff *skb)
 static int pn544_hci_check_presence(struct nfc_hci_dev *hdev,
                                    struct nfc_target *target)
 {
-        return nfc_hci_send_cmd(hdev, target->hci_reader_gate,
-                                PN544_RF_READER_CMD_PRESENCE_CHECK,
-                                NULL, 0, NULL);
+        pr_debug("supported protocol %d", target->supported_protocols);
+        if (target->supported_protocols & (NFC_PROTO_ISO14443_MASK |
+                                        NFC_PROTO_ISO14443_B_MASK)) {
+                return nfc_hci_send_cmd(hdev, target->hci_reader_gate,
+                                        PN544_RF_READER_CMD_PRESENCE_CHECK,
+                                        NULL, 0, NULL);
+        } else if (target->supported_protocols & NFC_PROTO_MIFARE_MASK) {
+                if (target->nfcid1_len != 4 && target->nfcid1_len != 7 &&
+                    target->nfcid1_len != 10)
+                        return -EPROTO;
+
+                 return nfc_hci_send_cmd(hdev, NFC_HCI_RF_READER_A_GATE,
+                                     PN544_RF_READER_CMD_ACTIVATE_NEXT,
+                                     target->nfcid1, target->nfcid1_len, NULL);
+        } else if (target->supported_protocols & NFC_PROTO_JEWEL_MASK) {
+                return nfc_hci_send_cmd(hdev, target->hci_reader_gate,
+                                        PN544_JEWEL_RAW_CMD, NULL, 0, NULL);
+        } else if (target->supported_protocols & NFC_PROTO_FELICA_MASK) {
+                return nfc_hci_send_cmd(hdev, PN544_RF_READER_F_GATE,
+                                        PN544_FELICA_RAW, NULL, 0, NULL);
+        } else if (target->supported_protocols & NFC_PROTO_NFC_DEP_MASK) {
+                return nfc_hci_send_cmd(hdev, target->hci_reader_gate,
+                                        PN544_HCI_CMD_ATTREQUEST,
+                                        NULL, 0, NULL);
+        }
+
+        return 0;
 }
 
 void pn544_hci_event_received(struct nfc_hci_dev *hdev, u8 gate, u8 event,