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authorMarcel Holtmann <marcel@holtmann.org>2015-04-06 00:52:11 -0700
committerMarcel Holtmann <marcel@holtmann.org>2015-04-07 18:48:21 +0200
commit48f0ed1bb68589db5d6566bd3cd28ec675feaf2f (patch)
tree5e6788eb7fdbce508c04f0613e8b0a821f8fd367
parent79b8df9362e8bd1951e1fddbd65ca87af8df52c8 (diff)
downloadop-kernel-dev-48f0ed1bb68589db5d6566bd3cd28ec675feaf2f.zip
op-kernel-dev-48f0ed1bb68589db5d6566bd3cd28ec675feaf2f.tar.gz
Bluetooth: btintel: Introduce generic Intel Bluetooth support
The majority of Intel Bluetooth vendor commands are shared between USB and UART transports. This creates a separate module that eventually will hold all Intel specific commands, but for now just start with the commands to change the Bluetooth public address and check for the default address. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
-rw-r--r--drivers/bluetooth/Kconfig3
-rw-r--r--drivers/bluetooth/Makefile1
-rw-r--r--drivers/bluetooth/btintel.c101
-rw-r--r--drivers/bluetooth/btintel.h41
4 files changed, 146 insertions, 0 deletions
diff --git a/drivers/bluetooth/Kconfig b/drivers/bluetooth/Kconfig
index 93351b9..e4aff8c 100644
--- a/drivers/bluetooth/Kconfig
+++ b/drivers/bluetooth/Kconfig
@@ -2,6 +2,9 @@
menu "Bluetooth device drivers"
depends on BT
+config BT_INTEL
+ tristate
+
config BT_BCM
tristate
select FW_LOADER
diff --git a/drivers/bluetooth/Makefile b/drivers/bluetooth/Makefile
index 51c9854..dd0d9c4 100644
--- a/drivers/bluetooth/Makefile
+++ b/drivers/bluetooth/Makefile
@@ -15,6 +15,7 @@ obj-$(CONFIG_BT_HCIBTUART) += btuart_cs.o
obj-$(CONFIG_BT_HCIBTUSB) += btusb.o
obj-$(CONFIG_BT_HCIBTSDIO) += btsdio.o
+obj-$(CONFIG_BT_INTEL) += btintel.o
obj-$(CONFIG_BT_ATH3K) += ath3k.o
obj-$(CONFIG_BT_MRVL) += btmrvl.o
obj-$(CONFIG_BT_MRVL_SDIO) += btmrvl_sdio.o
diff --git a/drivers/bluetooth/btintel.c b/drivers/bluetooth/btintel.c
new file mode 100644
index 0000000..2d43d42
--- /dev/null
+++ b/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");
diff --git a/drivers/bluetooth/btintel.h b/drivers/bluetooth/btintel.h
new file mode 100644
index 0000000..20be247
--- /dev/null
+++ b/drivers/bluetooth/btintel.h
@@ -0,0 +1,41 @@
+/*
+ *
+ * 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
+ *
+ */
+
+#if IS_ENABLED(CONFIG_BT_INTEL)
+
+int btintel_check_bdaddr(struct hci_dev *hdev);
+int btintel_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr);
+
+#else
+
+static inline int btintel_check_bdaddr(struct hci_dev *hdev)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline int btintel_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
+{
+ return -EOPNOTSUPP;
+}
+
+#endif
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