NFC: Export new attributes sensb_res and sensf_res

Export new attributes sensb_res for tech B and sensf_res
for tech F in the target info (returned as a response to
NFC_CMD_GET_TARGET).
The max size of the attributes nfcid1, sensb_res and sensf_res
is exported to user space though include/linux/nfc.

Signed-off-by: Ilan Elias <ilane@ti.com>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 98 insertions, 13 deletions

diff --git a/net/nfc/nci/ntf.c b/net/nfc/nci/ntf.c
index 10682bf7029d..a88be91e973f 100644
--- a/net/nfc/nci/ntf.c
+++ b/net/nfc/nci/ntf.c
@@ -115,15 +115,53 @@ static __u8 *nci_extract_rf_params_nfca_passive_poll(struct nci_dev *ndev,
         return data;
 }
 
+static __u8 *nci_extract_rf_params_nfcb_passive_poll(struct nci_dev *ndev,
+                        struct nci_rf_intf_activated_ntf *ntf, __u8 *data)
+{
+        struct rf_tech_specific_params_nfcb_poll *nfcb_poll;
+
+        nfcb_poll = &ntf->rf_tech_specific_params.nfcb_poll;
+
+        nfcb_poll->sensb_res_len = *data++;
+
+        pr_debug("sensb_res_len %d\n", nfcb_poll->sensb_res_len);
+
+        memcpy(nfcb_poll->sensb_res, data, nfcb_poll->sensb_res_len);
+        data += nfcb_poll->sensb_res_len;
+
+        return data;
+}
+
+static __u8 *nci_extract_rf_params_nfcf_passive_poll(struct nci_dev *ndev,
+                        struct nci_rf_intf_activated_ntf *ntf, __u8 *data)
+{
+        struct rf_tech_specific_params_nfcf_poll *nfcf_poll;
+
+        nfcf_poll = &ntf->rf_tech_specific_params.nfcf_poll;
+
+        nfcf_poll->bit_rate = *data++;
+        nfcf_poll->sensf_res_len = *data++;
+
+        pr_debug("bit_rate %d, sensf_res_len %d\n",
+                nfcf_poll->bit_rate, nfcf_poll->sensf_res_len);
+
+        memcpy(nfcf_poll->sensf_res, data, nfcf_poll->sensf_res_len);
+        data += nfcf_poll->sensf_res_len;
+
+        return data;
+}
+
 static int nci_extract_activation_params_iso_dep(struct nci_dev *ndev,
                         struct nci_rf_intf_activated_ntf *ntf, __u8 *data)
 {
         struct activation_params_nfca_poll_iso_dep *nfca_poll;
+        struct activation_params_nfcb_poll_iso_dep *nfcb_poll;
 
         switch (ntf->activation_rf_tech_and_mode) {
         case NCI_NFC_A_PASSIVE_POLL_MODE:
                 nfca_poll = &ntf->activation_params.nfca_poll_iso_dep;
                 nfca_poll->rats_res_len = *data++;
+                pr_debug("rats_res_len %d\n", nfca_poll->rats_res_len);
                 if (nfca_poll->rats_res_len > 0) {
                         memcpy(nfca_poll->rats_res,
                                 data,
@@ -131,6 +169,18 @@ static int nci_extract_activation_params_iso_dep(struct nci_dev *ndev,
                 }
                 break;
 
+        case NCI_NFC_B_PASSIVE_POLL_MODE:
+                nfcb_poll = &ntf->activation_params.nfcb_poll_iso_dep;
+                nfcb_poll->attrib_res_len = *data++;
+                pr_debug("attrib_res_len %d\n",
+                        nfcb_poll->attrib_res_len);
+                if (nfcb_poll->attrib_res_len > 0) {
+                        memcpy(nfcb_poll->attrib_res,
+                                data,
+                                nfcb_poll->attrib_res_len);
+                }
+                break;
+
         default:
                 pr_err("unsupported activation_rf_tech_and_mode 0x%x\n",
                        ntf->activation_rf_tech_and_mode);
@@ -145,21 +195,14 @@ static void nci_target_found(struct nci_dev *ndev,
 {
         struct nfc_target nfc_tgt;
 
-        if (ntf->rf_protocol == NCI_RF_PROTOCOL_T2T)    /* T2T MifareUL */
+        memset(&nfc_tgt, 0, sizeof(nfc_tgt));
+
+        if (ntf->rf_protocol == NCI_RF_PROTOCOL_T2T)
                 nfc_tgt.supported_protocols = NFC_PROTO_MIFARE_MASK;
-        else if (ntf->rf_protocol == NCI_RF_PROTOCOL_ISO_DEP)   /* 4A */
+        else if (ntf->rf_protocol == NCI_RF_PROTOCOL_ISO_DEP)
                 nfc_tgt.supported_protocols = NFC_PROTO_ISO14443_MASK;
-        else
-                nfc_tgt.supported_protocols = 0;
-
-        nfc_tgt.sens_res = ntf->rf_tech_specific_params.nfca_poll.sens_res;
-        nfc_tgt.sel_res = ntf->rf_tech_specific_params.nfca_poll.sel_res;
-        nfc_tgt.nfcid1_len = ntf->rf_tech_specific_params.nfca_poll.nfcid1_len;
-        if (nfc_tgt.nfcid1_len > 0) {
-                memcpy(nfc_tgt.nfcid1,
-                        ntf->rf_tech_specific_params.nfca_poll.nfcid1,
-                        nfc_tgt.nfcid1_len);
-        }
+        else if (ntf->rf_protocol == NCI_RF_PROTOCOL_T3T)
+                nfc_tgt.supported_protocols = NFC_PROTO_FELICA_MASK;
 
         if (!(nfc_tgt.supported_protocols & ndev->poll_prots)) {
                 pr_debug("the target found does not have the desired protocol\n");
@@ -169,6 +212,38 @@ static void nci_target_found(struct nci_dev *ndev,
         pr_debug("new target found,  supported_protocols 0x%x\n",
                  nfc_tgt.supported_protocols);
 
+        if (ntf->activation_rf_tech_and_mode == NCI_NFC_A_PASSIVE_POLL_MODE) {
+                nfc_tgt.sens_res =
+                        ntf->rf_tech_specific_params.nfca_poll.sens_res;
+                nfc_tgt.sel_res =
+                        ntf->rf_tech_specific_params.nfca_poll.sel_res;
+                nfc_tgt.nfcid1_len =
+                        ntf->rf_tech_specific_params.nfca_poll.nfcid1_len;
+                if (nfc_tgt.nfcid1_len > 0) {
+                        memcpy(nfc_tgt.nfcid1,
+                                ntf->rf_tech_specific_params.nfca_poll.nfcid1,
+                                nfc_tgt.nfcid1_len);
+                }
+        } else if (ntf->activation_rf_tech_and_mode ==
+                                                NCI_NFC_B_PASSIVE_POLL_MODE) {
+                nfc_tgt.sensb_res_len =
+                        ntf->rf_tech_specific_params.nfcb_poll.sensb_res_len;
+                if (nfc_tgt.sensb_res_len > 0) {
+                        memcpy(nfc_tgt.sensb_res,
+                               ntf->rf_tech_specific_params.nfcb_poll.sensb_res,
+                               nfc_tgt.sensb_res_len);
+                }
+        } else if (ntf->activation_rf_tech_and_mode ==
+                                                NCI_NFC_F_PASSIVE_POLL_MODE) {
+                nfc_tgt.sensf_res_len =
+                        ntf->rf_tech_specific_params.nfcf_poll.sensf_res_len;
+                if (nfc_tgt.sensf_res_len > 0) {
+                        memcpy(nfc_tgt.sensf_res,
+                               ntf->rf_tech_specific_params.nfcf_poll.sensf_res,
+                               nfc_tgt.sensf_res_len);
+                }
+        }
+
         ndev->target_available_prots = nfc_tgt.supported_protocols;
         ndev->max_data_pkt_payload_size = ntf->max_data_pkt_payload_size;
         ndev->initial_num_credits = ntf->initial_num_credits;
@@ -215,6 +290,16 @@ static void nci_rf_intf_activated_ntf_packet(struct nci_dev *ndev,
                                 &ntf, data);
                         break;
 
+                case NCI_NFC_B_PASSIVE_POLL_MODE:
+                        data = nci_extract_rf_params_nfcb_passive_poll(ndev,
+                                &ntf, data);
+                        break;
+
+                case NCI_NFC_F_PASSIVE_POLL_MODE:
+                        data = nci_extract_rf_params_nfcf_passive_poll(ndev,
+                                &ntf, data);
+                        break;
+
                 default:
                         pr_err("unsupported activation_rf_tech_and_mode 0x%x\n",
                                ntf.activation_rf_tech_and_mode);