NFC: Add a public nfc_hci_send_cmd_async method

This method initiates execution of an HCI cmd. Result will be delivered
through an asynchronous callback.

Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

diff --git a/include/net/nfc/hci.h b/include/net/nfc/hci.h
index 6f065d563ec15866646b4578195e9e6620cf7afe..54ba2caab4a67f09e46094f6151086f09cf2b239 100644 (file)
--- a/include/net/nfc/hci.h
+++ b/include/net/nfc/hci.h
@@ -200,6 +200,9 @@ int nfc_hci_set_param(struct nfc_hci_dev *hdev, u8 gate, u8 idx,
                      const u8 *param, size_t param_len);
 int nfc_hci_send_cmd(struct nfc_hci_dev *hdev, u8 gate, u8 cmd,
                     const u8 *param, size_t param_len, struct sk_buff **skb);
+int nfc_hci_send_cmd_async(struct nfc_hci_dev *hdev, u8 gate, u8 cmd,
+                          const u8 *param, size_t param_len,
+                          data_exchange_cb_t cb, void *cb_context);
 int nfc_hci_send_response(struct nfc_hci_dev *hdev, u8 gate, u8 response,
                          const u8 *param, size_t param_len);
 int nfc_hci_send_event(struct nfc_hci_dev *hdev, u8 gate, u8 event,

diff --git a/net/nfc/hci/command.c b/net/nfc/hci/command.c
index 15e21093c7a5370a1b8faa91b7a2d9fb862febf8..71c6a7086b8f04b4e6264969d21f1ba5a362fcb8 100644 (file)
--- a/net/nfc/hci/command.c
+++ b/net/nfc/hci/command.c
@@ -28,6 +28,20 @@
 
 #include "hci.h"
 
+static int nfc_hci_execute_cmd_async(struct nfc_hci_dev *hdev, u8 pipe, u8 cmd,
+                              const u8 *param, size_t param_len,
+                              data_exchange_cb_t cb, void *cb_context)
+{
+       pr_debug("exec cmd async through pipe=%d, cmd=%d, plen=%zd\n", pipe,
+                cmd, param_len);
+
+       /* TODO: Define hci cmd execution delay. Should it be the same
+        * for all commands?
+        */
+       return nfc_hci_hcp_message_tx(hdev, pipe, NFC_HCI_HCP_COMMAND, cmd,
+                                     param, param_len, cb, cb_context, 3000);
+}
+
 /*
  * HCI command execution completion callback.
  * err will be a standard linux error (may be converted from HCI response)
@@ -60,7 +74,8 @@ static int nfc_hci_execute_cmd(struct nfc_hci_dev *hdev, u8 pipe, u8 cmd,
        hcp_ew.exec_complete = false;
        hcp_ew.result_skb = NULL;
 
-       pr_debug("through pipe=%d, cmd=%d, plen=%zd\n", pipe, cmd, param_len);
+       pr_debug("exec cmd sync through pipe=%d, cmd=%d, plen=%zd\n", pipe,
+                cmd, param_len);
 
        /* TODO: Define hci cmd execution delay. Should it be the same
         * for all commands?
@@ -138,6 +153,23 @@ int nfc_hci_send_cmd(struct nfc_hci_dev *hdev, u8 gate, u8 cmd,
 }
 EXPORT_SYMBOL(nfc_hci_send_cmd);
 
+int nfc_hci_send_cmd_async(struct nfc_hci_dev *hdev, u8 gate, u8 cmd,
+                          const u8 *param, size_t param_len,
+                          data_exchange_cb_t cb, void *cb_context)
+{
+       u8 pipe;
+
+       pr_debug("\n");
+
+       pipe = hdev->gate2pipe[gate];
+       if (pipe == NFC_HCI_INVALID_PIPE)
+               return -EADDRNOTAVAIL;
+
+       return nfc_hci_execute_cmd_async(hdev, pipe, cmd, param, param_len,
+                                        cb, cb_context);
+}
+EXPORT_SYMBOL(nfc_hci_send_cmd_async);
+
 int nfc_hci_set_param(struct nfc_hci_dev *hdev, u8 gate, u8 idx,
                      const u8 *param, size_t param_len)
 {