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Diffstat (limited to 'net/nfc/nci/core.c')
-rw-r--r--net/nfc/nci/core.c91
1 files changed, 90 insertions, 1 deletions
diff --git a/net/nfc/nci/core.c b/net/nfc/nci/core.c
index f81efe13985a..acf9abb7d99b 100644
--- a/net/nfc/nci/core.c
+++ b/net/nfc/nci/core.c
@@ -176,6 +176,27 @@ static void nci_init_complete_req(struct nci_dev *ndev, unsigned long opt)
(1 + ((*num) * sizeof(struct disc_map_config))), &cmd);
}
+struct nci_set_config_param {
+ __u8 id;
+ size_t len;
+ __u8 *val;
+};
+
+static void nci_set_config_req(struct nci_dev *ndev, unsigned long opt)
+{
+ struct nci_set_config_param *param = (struct nci_set_config_param *)opt;
+ struct nci_core_set_config_cmd cmd;
+
+ BUG_ON(param->len > NCI_MAX_PARAM_LEN);
+
+ cmd.num_params = 1;
+ cmd.param.id = param->id;
+ cmd.param.len = param->len;
+ memcpy(cmd.param.val, param->val, param->len);
+
+ nci_send_cmd(ndev, NCI_OP_CORE_SET_CONFIG_CMD, (3 + param->len), &cmd);
+}
+
static void nci_rf_discover_req(struct nci_dev *ndev, unsigned long opt)
{
struct nci_rf_disc_cmd cmd;
@@ -388,6 +409,32 @@ static int nci_dev_down(struct nfc_dev *nfc_dev)
return nci_close_device(ndev);
}
+static int nci_set_local_general_bytes(struct nfc_dev *nfc_dev)
+{
+ struct nci_dev *ndev = nfc_get_drvdata(nfc_dev);
+ struct nci_set_config_param param;
+ __u8 local_gb[NFC_MAX_GT_LEN];
+ int i, rc = 0;
+
+ param.val = nfc_get_local_general_bytes(nfc_dev, &param.len);
+ if ((param.val == NULL) || (param.len == 0))
+ return rc;
+
+ if (param.len > NCI_MAX_PARAM_LEN)
+ return -EINVAL;
+
+ for (i = 0; i < param.len; i++)
+ local_gb[param.len-1-i] = param.val[i];
+
+ param.id = NCI_PN_ATR_REQ_GEN_BYTES;
+ param.val = local_gb;
+
+ rc = nci_request(ndev, nci_set_config_req, (unsigned long)&param,
+ msecs_to_jiffies(NCI_SET_CONFIG_TIMEOUT));
+
+ return rc;
+}
+
static int nci_start_poll(struct nfc_dev *nfc_dev,
__u32 im_protocols, __u32 tm_protocols)
{
@@ -415,6 +462,14 @@ static int nci_start_poll(struct nfc_dev *nfc_dev,
return -EBUSY;
}
+ if (im_protocols & NFC_PROTO_NFC_DEP_MASK) {
+ rc = nci_set_local_general_bytes(nfc_dev);
+ if (rc) {
+ pr_err("failed to set local general bytes\n");
+ return rc;
+ }
+ }
+
rc = nci_request(ndev, nci_rf_discover_req, im_protocols,
msecs_to_jiffies(NCI_RF_DISC_TIMEOUT));
@@ -509,7 +564,7 @@ static void nci_deactivate_target(struct nfc_dev *nfc_dev,
{
struct nci_dev *ndev = nfc_get_drvdata(nfc_dev);
- pr_debug("target_idx %d\n", target->idx);
+ pr_debug("entry\n");
if (!ndev->target_active_prot) {
pr_err("unable to deactivate target, no active target\n");
@@ -524,6 +579,38 @@ static void nci_deactivate_target(struct nfc_dev *nfc_dev,
}
}
+
+static int nci_dep_link_up(struct nfc_dev *nfc_dev, struct nfc_target *target,
+ __u8 comm_mode, __u8 *gb, size_t gb_len)
+{
+ struct nci_dev *ndev = nfc_get_drvdata(nfc_dev);
+ int rc;
+
+ pr_debug("target_idx %d, comm_mode %d\n", target->idx, comm_mode);
+
+ rc = nci_activate_target(nfc_dev, target, NFC_PROTO_NFC_DEP);
+ if (rc)
+ return rc;
+
+ rc = nfc_set_remote_general_bytes(nfc_dev, ndev->remote_gb,
+ ndev->remote_gb_len);
+ if (!rc)
+ rc = nfc_dep_link_is_up(nfc_dev, target->idx, NFC_COMM_PASSIVE,
+ NFC_RF_INITIATOR);
+
+ return rc;
+}
+
+static int nci_dep_link_down(struct nfc_dev *nfc_dev)
+{
+ pr_debug("entry\n");
+
+ nci_deactivate_target(nfc_dev, NULL);
+
+ return 0;
+}
+
+
static int nci_transceive(struct nfc_dev *nfc_dev, struct nfc_target *target,
struct sk_buff *skb,
data_exchange_cb_t cb, void *cb_context)
@@ -557,6 +644,8 @@ static struct nfc_ops nci_nfc_ops = {
.dev_down = nci_dev_down,
.start_poll = nci_start_poll,
.stop_poll = nci_stop_poll,
+ .dep_link_up = nci_dep_link_up,
+ .dep_link_down = nci_dep_link_down,
.activate_target = nci_activate_target,
.deactivate_target = nci_deactivate_target,
.im_transceive = nci_transceive,