Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / bluetooth / btintel.c

diff --git a/kernel/drivers/bluetooth/btintel.c b/kernel/drivers/bluetooth/btintel.c
new file mode 100644 (file)
index 0000000..2d43d42
--- /dev/null
+++ b/kernel/drivers/bluetooth/btintel.c
@@ -0,0 +1,101 @@
+/*
+ *
+ *  Bluetooth support for Intel devices
+ *
+ *  Copyright (C) 2015  Intel Corporation
+ *
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include <linux/module.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+#include "btintel.h"
+
+#define VERSION "0.1"
+
+#define BDADDR_INTEL (&(bdaddr_t) {{0x00, 0x8b, 0x9e, 0x19, 0x03, 0x00}})
+
+int btintel_check_bdaddr(struct hci_dev *hdev)
+{
+       struct hci_rp_read_bd_addr *bda;
+       struct sk_buff *skb;
+
+       skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
+                            HCI_INIT_TIMEOUT);
+       if (IS_ERR(skb)) {
+               int err = PTR_ERR(skb);
+               BT_ERR("%s: Reading Intel device address failed (%d)",
+                      hdev->name, err);
+               return err;
+       }
+
+       if (skb->len != sizeof(*bda)) {
+               BT_ERR("%s: Intel device address length mismatch", hdev->name);
+               kfree_skb(skb);
+               return -EIO;
+       }
+
+       bda = (struct hci_rp_read_bd_addr *)skb->data;
+       if (bda->status) {
+               BT_ERR("%s: Intel device address result failed (%02x)",
+                      hdev->name, bda->status);
+               kfree_skb(skb);
+               return -bt_to_errno(bda->status);
+       }
+
+       /* For some Intel based controllers, the default Bluetooth device
+        * address 00:03:19:9E:8B:00 can be found. These controllers are
+        * fully operational, but have the danger of duplicate addresses
+        * and that in turn can cause problems with Bluetooth operation.
+        */
+       if (!bacmp(&bda->bdaddr, BDADDR_INTEL)) {
+               BT_ERR("%s: Found Intel default device address (%pMR)",
+                      hdev->name, &bda->bdaddr);
+               set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
+       }
+
+       kfree_skb(skb);
+
+       return 0;
+}
+EXPORT_SYMBOL_GPL(btintel_check_bdaddr);
+
+int btintel_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
+{
+       struct sk_buff *skb;
+       int err;
+
+       skb = __hci_cmd_sync(hdev, 0xfc31, 6, bdaddr, HCI_INIT_TIMEOUT);
+       if (IS_ERR(skb)) {
+               err = PTR_ERR(skb);
+               BT_ERR("%s: Changing Intel device address failed (%d)",
+                      hdev->name, err);
+               return err;
+       }
+       kfree_skb(skb);
+
+       return 0;
+}
+EXPORT_SYMBOL_GPL(btintel_set_bdaddr);
+
+MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
+MODULE_DESCRIPTION("Bluetooth support for Intel devices ver " VERSION);
+MODULE_VERSION(VERSION);
+MODULE_LICENSE("GPL");