Bluetooth: Enable new LE meta event

The Bluetooth 4.1 introduces a new LE meta event called "LE Remote
Connection Parameter Request" event. In order to the controller
sends this event to host, we should enable it during controller
initialization.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

2 files changed, 12 insertions, 0 deletions

diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index 95b754785a7d..66358af6b1fc 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -307,6 +307,9 @@ enum {
 #define LMP_HOST_LE_BREDR       0x04
 #define LMP_HOST_SC             0x08
 
+/* LE features */
+#define HCI_LE_CONN_PARAM_REQ_PROC      0x02
+
 /* Connection modes */
 #define HCI_CM_ACTIVE   0x0000
 #define HCI_CM_HOLD     0x0001
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 5788e031b869..615d0cf5e511 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -1611,6 +1611,15 @@ static void hci_init3_req(struct hci_request *req, unsigned long opt)
 
                 memset(events, 0, sizeof(events));
                 events[0] = 0x1f;
+
+                /* If controller supports the Connection Parameters Request
+                 * Link Layer Procedure, enable the corresponding event.
+                 */
+                if (hdev->le_features[0] & HCI_LE_CONN_PARAM_REQ_PROC)
+                        events[0] |= 0x20;      /* LE Remote Connection
+                                                 * Parameter Request
+                                                 */
+
                 hci_req_add(req, HCI_OP_LE_SET_EVENT_MASK, sizeof(events),
                             events);