NFC: Parse NCI NFC-DEP activation params

Signed-off-by: Ilan Elias <ilane@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 32 insertions, 0 deletions

diff --git a/net/nfc/nci/ntf.c b/net/nfc/nci/ntf.c
index af7a93b0439..6e17661a41a 100644
--- a/net/nfc/nci/ntf.c
+++ b/net/nfc/nci/ntf.c
@@ -361,6 +361,33 @@ static int nci_extract_activation_params_iso_dep(struct nci_dev *ndev,
         return NCI_STATUS_OK;
 }
 
+static int nci_extract_activation_params_nfc_dep(struct nci_dev *ndev,
+                        struct nci_rf_intf_activated_ntf *ntf, __u8 *data)
+{
+        struct activation_params_poll_nfc_dep *poll;
+        int i;
+
+        switch (ntf->activation_rf_tech_and_mode) {
+        case NCI_NFC_A_PASSIVE_POLL_MODE:
+        case NCI_NFC_F_PASSIVE_POLL_MODE:
+                poll = &ntf->activation_params.poll_nfc_dep;
+                poll->atr_res_len = min_t(__u8, *data++, 63);
+                pr_debug("atr_res_len %d\n", poll->atr_res_len);
+                if (poll->atr_res_len > 0) {
+                        for (i = 0; i < poll->atr_res_len; i++)
+                                poll->atr_res[poll->atr_res_len-1-i] = data[i];
+                }
+                break;
+
+        default:
+                pr_err("unsupported activation_rf_tech_and_mode 0x%x\n",
+                       ntf->activation_rf_tech_and_mode);
+                return NCI_STATUS_RF_PROTOCOL_ERROR;
+        }
+
+        return NCI_STATUS_OK;
+}
+
 static void nci_target_auto_activated(struct nci_dev *ndev,
                                       struct nci_rf_intf_activated_ntf *ntf)
 {
@@ -454,6 +481,11 @@ static void nci_rf_intf_activated_ntf_packet(struct nci_dev *ndev,
                                                                     &ntf, data);
                         break;
 
+                case NCI_RF_INTERFACE_NFC_DEP:
+                        err = nci_extract_activation_params_nfc_dep(ndev,
+                                                                    &ntf, data);
+                        break;
+
                 case NCI_RF_INTERFACE_FRAME:
                         /* no activation params */
                         break;