NFC: nci: add nci_hci_clear_all_pipes functions

nci_hci_clear_all_pipes might be use full in some cases
for example after a firmware update.

Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/net/nfc/nci/hci.c b/net/nfc/nci/hci.c
index 30b09f04c142..6f477d21adfd 100644
--- a/net/nfc/nci/hci.c
+++ b/net/nfc/nci/hci.c
@@ -70,6 +70,7 @@ struct nci_hcp_packet {
 #define NCI_HCI_ANY_SET_PARAMETER  0x01
 #define NCI_HCI_ANY_GET_PARAMETER  0x02
 #define NCI_HCI_ANY_CLOSE_PIPE     0x04
+#define NCI_HCI_ADM_CLEAR_ALL_PIPE 0x14
 
 #define NCI_HFP_NO_CHAINING        0x80
 
@@ -267,6 +268,20 @@ int nci_hci_send_cmd(struct nci_dev *ndev, u8 gate, u8 cmd,
 }
 EXPORT_SYMBOL(nci_hci_send_cmd);
 
+int nci_hci_clear_all_pipes(struct nci_dev *ndev)
+{
+        int r;
+
+        r = nci_hci_send_cmd(ndev, NCI_HCI_ADMIN_GATE,
+                             NCI_HCI_ADM_CLEAR_ALL_PIPE, NULL, 0, NULL);
+        if (r < 0)
+                return r;
+
+        nci_hci_reset_pipes(ndev->hci_dev);
+        return r;
+}
+EXPORT_SYMBOL(nci_hci_clear_all_pipes);
+
 static void nci_hci_event_received(struct nci_dev *ndev, u8 pipe,
                                    u8 event, struct sk_buff *skb)
 {