NFC: Implement HCI DEP link up and down
And implement the corresponding hooks for pn544.
Signed-off-by: Arron Wang <arron.wang@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/drivers/nfc/pn544_hci.c b/drivers/nfc/pn544_hci.c
index 6d564bd..4ed2b83 100644
--- a/drivers/nfc/pn544_hci.c
+++ b/drivers/nfc/pn544_hci.c
@@ -746,6 +746,43 @@
return r;
}
+static int pn544_hci_dep_link_up(struct nfc_hci_dev *hdev,
+ struct nfc_target *target, u8 comm_mode,
+ u8 *gb, size_t gb_len)
+{
+ struct sk_buff *rgb_skb = NULL;
+ int r;
+
+ r = nfc_hci_get_param(hdev, target->hci_reader_gate,
+ PN544_DEP_ATR_RES, &rgb_skb);
+ if (r < 0)
+ return r;
+
+ if (rgb_skb->len == 0 || rgb_skb->len > NFC_GB_MAXSIZE) {
+ r = -EPROTO;
+ goto exit;
+ }
+ print_hex_dump(KERN_DEBUG, "remote gb: ", DUMP_PREFIX_OFFSET,
+ 16, 1, rgb_skb->data, rgb_skb->len, true);
+
+ r = nfc_set_remote_general_bytes(hdev->ndev, rgb_skb->data,
+ rgb_skb->len);
+
+ if (r == 0)
+ r = nfc_dep_link_is_up(hdev->ndev, target->idx, comm_mode,
+ NFC_RF_INITIATOR);
+exit:
+ kfree_skb(rgb_skb);
+ return r;
+}
+
+static int pn544_hci_dep_link_down(struct nfc_hci_dev *hdev)
+{
+
+ return nfc_hci_send_event(hdev, PN544_RF_READER_NFCIP1_INITIATOR_GATE,
+ NFC_HCI_EVT_END_OPERATION, NULL, 0);
+}
+
static int pn544_hci_target_from_gate(struct nfc_hci_dev *hdev, u8 gate,
struct nfc_target *target)
{
@@ -973,6 +1010,8 @@
.hci_ready = pn544_hci_ready,
.xmit = pn544_hci_xmit,
.start_poll = pn544_hci_start_poll,
+ .dep_link_up = pn544_hci_dep_link_up,
+ .dep_link_down = pn544_hci_dep_link_down,
.target_from_gate = pn544_hci_target_from_gate,
.complete_target_discovered = pn544_hci_complete_target_discovered,
.data_exchange = pn544_hci_data_exchange,