fishHEADmaster

1 files changed, 1659 insertions, 0 deletions

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
new file mode 100644
index 0000000..b7c212f
--- /dev/null
+++ b/drivers/bluetooth/btusb.c
@@ -0,0 +1,1659 @@
+/*
+ *
+ *  Generic Bluetooth USB driver
+ *
+ *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
+ *
+ *
+ *  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 <linux/usb.h>
+#include <linux/firmware.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+#define VERSION "0.6"
+
+static bool ignore_dga;
+static bool ignore_csr;
+static bool ignore_sniffer;
+static bool disable_scofix;
+static bool force_scofix;
+
+static bool reset = 1;
+
+static struct usb_driver btusb_driver;
+
+#define BTUSB_IGNORE		0x01
+#define BTUSB_DIGIANSWER	0x02
+#define BTUSB_CSR		0x04
+#define BTUSB_SNIFFER		0x08
+#define BTUSB_BCM92035		0x10
+#define BTUSB_BROKEN_ISOC	0x20
+#define BTUSB_WRONG_SCO_MTU	0x40
+#define BTUSB_ATH3012		0x80
+#define BTUSB_INTEL		0x100
+
+static struct usb_device_id btusb_table[] = {
+	/* Generic Bluetooth USB device */
+	{ USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
+
+	/* Apple-specific (Broadcom) devices */
+	{ USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
+
+	/* MediaTek MT76x0E */
+	{ USB_DEVICE(0x0e8d, 0x763f) },
+
+	/* Broadcom SoftSailing reporting vendor specific */
+	{ USB_DEVICE(0x0a5c, 0x21e1) },
+
+	/* Apple MacBookPro 7,1 */
+	{ USB_DEVICE(0x05ac, 0x8213) },
+
+	/* Apple iMac11,1 */
+	{ USB_DEVICE(0x05ac, 0x8215) },
+
+	/* Apple MacBookPro6,2 */
+	{ USB_DEVICE(0x05ac, 0x8218) },
+
+	/* Apple MacBookAir3,1, MacBookAir3,2 */
+	{ USB_DEVICE(0x05ac, 0x821b) },
+
+	/* Apple MacBookAir4,1 */
+	{ USB_DEVICE(0x05ac, 0x821f) },
+
+	/* Apple MacBookPro8,2 */
+	{ USB_DEVICE(0x05ac, 0x821a) },
+
+	/* Apple MacMini5,1 */
+	{ USB_DEVICE(0x05ac, 0x8281) },
+
+	/* AVM BlueFRITZ! USB v2.0 */
+	{ USB_DEVICE(0x057c, 0x3800) },
+
+	/* Bluetooth Ultraport Module from IBM */
+	{ USB_DEVICE(0x04bf, 0x030a) },
+
+	/* ALPS Modules with non-standard id */
+	{ USB_DEVICE(0x044e, 0x3001) },
+	{ USB_DEVICE(0x044e, 0x3002) },
+
+	/* Ericsson with non-standard id */
+	{ USB_DEVICE(0x0bdb, 0x1002) },
+
+	/* Canyon CN-BTU1 with HID interfaces */
+	{ USB_DEVICE(0x0c10, 0x0000) },
+
+	/* Broadcom BCM20702A0 */
+	{ USB_DEVICE(0x0b05, 0x17b5) },
+	{ USB_DEVICE(0x0b05, 0x17cb) },
+	{ USB_DEVICE(0x04ca, 0x2003) },
+	{ USB_DEVICE(0x0489, 0xe042) },
+	{ USB_DEVICE(0x413c, 0x8197) },
+
+	/* Foxconn - Hon Hai */
+	{ USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) },
+
+	/*Broadcom devices with vendor specific id */
+	{ USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) },
+
+	{ }	/* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE(usb, btusb_table);
+
+static struct usb_device_id blacklist_table[] = {
+	/* CSR BlueCore devices */
+	{ USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
+
+	/* Broadcom BCM2033 without firmware */
+	{ USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
+
+	/* Atheros 3011 with sflash firmware */
+	{ USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
+	{ USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
+	{ USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
+	{ USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
+	{ USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
+	{ USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
+
+	/* Atheros AR9285 Malbec with sflash firmware */
+	{ USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
+
+	/* Atheros 3012 with sflash firmware */
+	{ USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
+	{ USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
+	{ USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
+	{ USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
+	{ USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
+	{ USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
+	{ USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
+	{ USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
+	{ USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
+	{ USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
+	{ USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
+	{ USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
+	{ USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
+	{ USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
+	{ USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
+	{ USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
+	{ USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
+	{ USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
+	{ USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
+	{ USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
+	{ USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
+	{ USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
+	{ USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
+
+	/* Atheros AR5BBU12 with sflash firmware */
+	{ USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
+
+	/* Atheros AR5BBU12 with sflash firmware */
+	{ USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
+	{ USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
+
+	/* Broadcom BCM2035 */
+	{ USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
+	{ USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
+	{ USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
+
+	/* Broadcom BCM2045 */
+	{ USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
+	{ USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
+
+	/* IBM/Lenovo ThinkPad with Broadcom chip */
+	{ USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
+	{ USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
+
+	/* HP laptop with Broadcom chip */
+	{ USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
+
+	/* Dell laptop with Broadcom chip */
+	{ USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
+
+	/* Dell Wireless 370 and 410 devices */
+	{ USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
+	{ USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
+
+	/* Belkin F8T012 and F8T013 devices */
+	{ USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
+	{ USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
+
+	/* Asus WL-BTD202 device */
+	{ USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
+
+	/* Kensington Bluetooth USB adapter */
+	{ USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
+
+	/* RTX Telecom based adapters with buggy SCO support */
+	{ USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
+	{ USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
+
+	/* CONWISE Technology based adapters with buggy SCO support */
+	{ USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
+
+	/* Digianswer devices */
+	{ USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
+	{ USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
+
+	/* CSR BlueCore Bluetooth Sniffer */
+	{ USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
+
+	/* Frontline ComProbe Bluetooth Sniffer */
+	{ USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
+
+	/* Intel Bluetooth device */
+	{ USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
+
+	{ }	/* Terminating entry */
+};
+
+#define BTUSB_MAX_ISOC_FRAMES	10
+
+#define BTUSB_INTR_RUNNING	0
+#define BTUSB_BULK_RUNNING	1
+#define BTUSB_ISOC_RUNNING	2
+#define BTUSB_SUSPENDING	3
+#define BTUSB_DID_ISO_RESUME	4
+
+struct btusb_data {
+	struct hci_dev       *hdev;
+	struct usb_device    *udev;
+	struct usb_interface *intf;
+	struct usb_interface *isoc;
+
+	spinlock_t lock;
+
+	unsigned long flags;
+
+	struct work_struct work;
+	struct work_struct waker;
+
+	struct usb_anchor tx_anchor;
+	struct usb_anchor intr_anchor;
+	struct usb_anchor bulk_anchor;
+	struct usb_anchor isoc_anchor;
+	struct usb_anchor deferred;
+	int tx_in_flight;
+	spinlock_t txlock;
+
+	struct usb_endpoint_descriptor *intr_ep;
+	struct usb_endpoint_descriptor *bulk_tx_ep;
+	struct usb_endpoint_descriptor *bulk_rx_ep;
+	struct usb_endpoint_descriptor *isoc_tx_ep;
+	struct usb_endpoint_descriptor *isoc_rx_ep;
+
+	__u8 cmdreq_type;
+
+	unsigned int sco_num;
+	int isoc_altsetting;
+	int suspend_count;
+};
+
+static int inc_tx(struct btusb_data *data)
+{
+	unsigned long flags;
+	int rv;
+
+	spin_lock_irqsave(&data->txlock, flags);
+	rv = test_bit(BTUSB_SUSPENDING, &data->flags);
+	if (!rv)
+		data->tx_in_flight++;
+	spin_unlock_irqrestore(&data->txlock, flags);
+
+	return rv;
+}
+
+static void btusb_intr_complete(struct urb *urb)
+{
+	struct hci_dev *hdev = urb->context;
+	struct btusb_data *data = hci_get_drvdata(hdev);
+	int err;
+
+	BT_DBG("%s urb %p status %d count %d", hdev->name,
+					urb, urb->status, urb->actual_length);
+
+	if (!test_bit(HCI_RUNNING, &hdev->flags))
+		return;
+
+	if (urb->status == 0) {
+		hdev->stat.byte_rx += urb->actual_length;
+
+		if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
+						urb->transfer_buffer,
+						urb->actual_length) < 0) {
+			BT_ERR("%s corrupted event packet", hdev->name);
+			hdev->stat.err_rx++;
+		}
+	}
+
+	if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
+		return;
+
+	usb_mark_last_busy(data->udev);
+	usb_anchor_urb(urb, &data->intr_anchor);
+
+	err = usb_submit_urb(urb, GFP_ATOMIC);
+	if (err < 0) {
+		/* -EPERM: urb is being killed;
+		 * -ENODEV: device got disconnected */
+		if (err != -EPERM && err != -ENODEV)
+			BT_ERR("%s urb %p failed to resubmit (%d)",
+						hdev->name, urb, -err);
+		usb_unanchor_urb(urb);
+	}
+}
+
+static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
+{
+	struct btusb_data *data = hci_get_drvdata(hdev);
+	struct urb *urb;
+	unsigned char *buf;
+	unsigned int pipe;
+	int err, size;
+
+	BT_DBG("%s", hdev->name);
+
+	if (!data->intr_ep)
+		return -ENODEV;
+
+	urb = usb_alloc_urb(0, mem_flags);
+	if (!urb)
+		return -ENOMEM;
+
+	size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
+
+	buf = kmalloc(size, mem_flags);
+	if (!buf) {
+		usb_free_urb(urb);
+		return -ENOMEM;
+	}
+
+	pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
+
+	usb_fill_int_urb(urb, data->udev, pipe, buf, size,
+						btusb_intr_complete, hdev,
+						data->intr_ep->bInterval);
+
+	urb->transfer_flags |= URB_FREE_BUFFER;
+
+	usb_anchor_urb(urb, &data->intr_anchor);
+
+	err = usb_submit_urb(urb, mem_flags);
+	if (err < 0) {
+		if (err != -EPERM && err != -ENODEV)
+			BT_ERR("%s urb %p submission failed (%d)",
+						hdev->name, urb, -err);
+		usb_unanchor_urb(urb);
+	}
+
+	usb_free_urb(urb);
+
+	return err;
+}
+
+static void btusb_bulk_complete(struct urb *urb)
+{
+	struct hci_dev *hdev = urb->context;
+	struct btusb_data *data = hci_get_drvdata(hdev);
+	int err;
+
+	BT_DBG("%s urb %p status %d count %d", hdev->name,
+					urb, urb->status, urb->actual_length);
+
+	if (!test_bit(HCI_RUNNING, &hdev->flags))
+		return;
+
+	if (urb->status == 0) {
+		hdev->stat.byte_rx += urb->actual_length;
+
+		if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
+						urb->transfer_buffer,
+						urb->actual_length) < 0) {
+			BT_ERR("%s corrupted ACL packet", hdev->name);
+			hdev->stat.err_rx++;
+		}
+	}
+
+	if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
+		return;
+
+	usb_anchor_urb(urb, &data->bulk_anchor);
+	usb_mark_last_busy(data->udev);
+
+	err = usb_submit_urb(urb, GFP_ATOMIC);
+	if (err < 0) {
+		/* -EPERM: urb is being killed;
+		 * -ENODEV: device got disconnected */
+		if (err != -EPERM && err != -ENODEV)
+			BT_ERR("%s urb %p failed to resubmit (%d)",
+						hdev->name, urb, -err);
+		usb_unanchor_urb(urb);
+	}
+}
+
+static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
+{
+	struct btusb_data *data = hci_get_drvdata(hdev);
+	struct urb *urb;
+	unsigned char *buf;
+	unsigned int pipe;
+	int err, size = HCI_MAX_FRAME_SIZE;
+
+	BT_DBG("%s", hdev->name);
+
+	if (!data->bulk_rx_ep)
+		return -ENODEV;
+
+	urb = usb_alloc_urb(0, mem_flags);
+	if (!urb)
+		return -ENOMEM;
+
+	buf = kmalloc(size, mem_flags);
+	if (!buf) {
+		usb_free_urb(urb);
+		return -ENOMEM;
+	}
+
+	pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
+
+	usb_fill_bulk_urb(urb, data->udev, pipe,
+					buf, size, btusb_bulk_complete, hdev);
+
+	urb->transfer_flags |= URB_FREE_BUFFER;
+
+	usb_mark_last_busy(data->udev);
+	usb_anchor_urb(urb, &data->bulk_anchor);
+
+	err = usb_submit_urb(urb, mem_flags);
+	if (err < 0) {
+		if (err != -EPERM && err != -ENODEV)
+			BT_ERR("%s urb %p submission failed (%d)",
+						hdev->name, urb, -err);
+		usb_unanchor_urb(urb);
+	}
+
+	usb_free_urb(urb);
+
+	return err;
+}
+
+static void btusb_isoc_complete(struct urb *urb)
+{
+	struct hci_dev *hdev = urb->context;
+	struct btusb_data *data = hci_get_drvdata(hdev);
+	int i, err;
+
+	BT_DBG("%s urb %p status %d count %d", hdev->name,
+					urb, urb->status, urb->actual_length);
+
+	if (!test_bit(HCI_RUNNING, &hdev->flags))
+		return;
+
+	if (urb->status == 0) {
+		for (i = 0; i < urb->number_of_packets; i++) {
+			unsigned int offset = urb->iso_frame_desc[i].offset;
+			unsigned int length = urb->iso_frame_desc[i].actual_length;
+
+			if (urb->iso_frame_desc[i].status)
+				continue;
+
+			hdev->stat.byte_rx += length;
+
+			if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
+						urb->transfer_buffer + offset,
+								length) < 0) {
+				BT_ERR("%s corrupted SCO packet", hdev->name);
+				hdev->stat.err_rx++;
+			}
+		}
+	}
+
+	if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
+		return;
+
+	usb_anchor_urb(urb, &data->isoc_anchor);
+
+	err = usb_submit_urb(urb, GFP_ATOMIC);
+	if (err < 0) {
+		/* -EPERM: urb is being killed;
+		 * -ENODEV: device got disconnected */
+		if (err != -EPERM && err != -ENODEV)
+			BT_ERR("%s urb %p failed to resubmit (%d)",
+						hdev->name, urb, -err);
+		usb_unanchor_urb(urb);
+	}
+}
+
+static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
+{
+	int i, offset = 0;
+
+	BT_DBG("len %d mtu %d", len, mtu);
+
+	for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
+					i++, offset += mtu, len -= mtu) {
+		urb->iso_frame_desc[i].offset = offset;
+		urb->iso_frame_desc[i].length = mtu;
+	}
+
+	if (len && i < BTUSB_MAX_ISOC_FRAMES) {
+		urb->iso_frame_desc[i].offset = offset;
+		urb->iso_frame_desc[i].length = len;
+		i++;
+	}
+
+	urb->number_of_packets = i;
+}
+
+static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
+{
+	struct btusb_data *data = hci_get_drvdata(hdev);
+	struct urb *urb;
+	unsigned char *buf;
+	unsigned int pipe;
+	int err, size;
+
+	BT_DBG("%s", hdev->name);
+
+	if (!data->isoc_rx_ep)
+		return -ENODEV;
+
+	urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
+	if (!urb)
+		return -ENOMEM;
+
+	size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
+						BTUSB_MAX_ISOC_FRAMES;
+
+	buf = kmalloc(size, mem_flags);
+	if (!buf) {
+		usb_free_urb(urb);
+		return -ENOMEM;
+	}
+
+	pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
+
+	usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
+				hdev, data->isoc_rx_ep->bInterval);
+
+	urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
+
+	__fill_isoc_descriptor(urb, size,
+			le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
+
+	usb_anchor_urb(urb, &data->isoc_anchor);
+
+	err = usb_submit_urb(urb, mem_flags);
+	if (err < 0) {
+		if (err != -EPERM && err != -ENODEV)
+			BT_ERR("%s urb %p submission failed (%d)",
+						hdev->name, urb, -err);
+		usb_unanchor_urb(urb);
+	}
+
+	usb_free_urb(urb);
+
+	return err;
+}
+
+static void btusb_tx_complete(struct urb *urb)
+{
+	struct sk_buff *skb = urb->context;
+	struct hci_dev *hdev = (struct hci_dev *) skb->dev;
+	struct btusb_data *data = hci_get_drvdata(hdev);
+
+	BT_DBG("%s urb %p status %d count %d", hdev->name,
+					urb, urb->status, urb->actual_length);
+
+	if (!test_bit(HCI_RUNNING, &hdev->flags))
+		goto done;
+
+	if (!urb->status)
+		hdev->stat.byte_tx += urb->transfer_buffer_length;
+	else
+		hdev->stat.err_tx++;
+
+done:
+	spin_lock(&data->txlock);
+	data->tx_in_flight--;
+	spin_unlock(&data->txlock);
+
+	kfree(urb->setup_packet);
+
+	kfree_skb(skb);
+}
+
+static void btusb_isoc_tx_complete(struct urb *urb)
+{
+	struct sk_buff *skb = urb->context;
+	struct hci_dev *hdev = (struct hci_dev *) skb->dev;
+
+	BT_DBG("%s urb %p status %d count %d", hdev->name,
+					urb, urb->status, urb->actual_length);
+
+	if (!test_bit(HCI_RUNNING, &hdev->flags))
+		goto done;
+
+	if (!urb->status)
+		hdev->stat.byte_tx += urb->transfer_buffer_length;
+	else
+		hdev->stat.err_tx++;
+
+done:
+	kfree(urb->setup_packet);
+
+	kfree_skb(skb);
+}
+
+static int btusb_open(struct hci_dev *hdev)
+{
+	struct btusb_data *data = hci_get_drvdata(hdev);
+	int err;
+
+	BT_DBG("%s", hdev->name);
+
+	err = usb_autopm_get_interface(data->intf);
+	if (err < 0)
+		return err;
+
+	data->intf->needs_remote_wakeup = 1;
+
+	if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
+		goto done;
+
+	if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
+		goto done;
+
+	err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
+	if (err < 0)
+		goto failed;
+
+	err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
+	if (err < 0) {
+		usb_kill_anchored_urbs(&data->intr_anchor);
+		goto failed;
+	}
+
+	set_bit(BTUSB_BULK_RUNNING, &data->flags);
+	btusb_submit_bulk_urb(hdev, GFP_KERNEL);
+
+done:
+	usb_autopm_put_interface(data->intf);
+	return 0;
+
+failed:
+	clear_bit(BTUSB_INTR_RUNNING, &data->flags);
+	clear_bit(HCI_RUNNING, &hdev->flags);
+	usb_autopm_put_interface(data->intf);
+	return err;
+}
+
+static void btusb_stop_traffic(struct btusb_data *data)
+{
+	usb_kill_anchored_urbs(&data->intr_anchor);
+	usb_kill_anchored_urbs(&data->bulk_anchor);
+	usb_kill_anchored_urbs(&data->isoc_anchor);
+}
+
+static int btusb_close(struct hci_dev *hdev)
+{
+	struct btusb_data *data = hci_get_drvdata(hdev);
+	int err;
+
+	BT_DBG("%s", hdev->name);
+
+	if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
+		return 0;
+
+	cancel_work_sync(&data->work);
+	cancel_work_sync(&data->waker);
+
+	clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
+	clear_bit(BTUSB_BULK_RUNNING, &data->flags);
+	clear_bit(BTUSB_INTR_RUNNING, &data->flags);
+
+	btusb_stop_traffic(data);
+	err = usb_autopm_get_interface(data->intf);
+	if (err < 0)
+		goto failed;
+
+	data->intf->needs_remote_wakeup = 0;
+	usb_autopm_put_interface(data->intf);
+
+failed:
+	usb_scuttle_anchored_urbs(&data->deferred);
+	return 0;
+}
+
+static int btusb_flush(struct hci_dev *hdev)
+{
+	struct btusb_data *data = hci_get_drvdata(hdev);
+
+	BT_DBG("%s", hdev->name);
+
+	usb_kill_anchored_urbs(&data->tx_anchor);
+
+	return 0;
+}
+
+static int btusb_send_frame(struct sk_buff *skb)
+{
+	struct hci_dev *hdev = (struct hci_dev *) skb->dev;
+	struct btusb_data *data = hci_get_drvdata(hdev);
+	struct usb_ctrlrequest *dr;
+	struct urb *urb;
+	unsigned int pipe;
+	int err;
+
+	BT_DBG("%s", hdev->name);
+
+	if (!test_bit(HCI_RUNNING, &hdev->flags))
+		return -EBUSY;
+
+	switch (bt_cb(skb)->pkt_type) {
+	case HCI_COMMAND_PKT:
+		urb = usb_alloc_urb(0, GFP_ATOMIC);
+		if (!urb)
+			return -ENOMEM;
+
+		dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
+		if (!dr) {
+			usb_free_urb(urb);
+			return -ENOMEM;
+		}
+
+		dr->bRequestType = data->cmdreq_type;
+		dr->bRequest     = 0;
+		dr->wIndex       = 0;
+		dr->wValue       = 0;
+		dr->wLength      = __cpu_to_le16(skb->len);
+
+		pipe = usb_sndctrlpipe(data->udev, 0x00);
+
+		usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
+				skb->data, skb->len, btusb_tx_complete, skb);
+
+		hdev->stat.cmd_tx++;
+		break;
+
+	case HCI_ACLDATA_PKT:
+		if (!data->bulk_tx_ep)
+			return -ENODEV;
+
+		urb = usb_alloc_urb(0, GFP_ATOMIC);
+		if (!urb)
+			return -ENOMEM;
+
+		pipe = usb_sndbulkpipe(data->udev,
+					data->bulk_tx_ep->bEndpointAddress);
+
+		usb_fill_bulk_urb(urb, data->udev, pipe,
+				skb->data, skb->len, btusb_tx_complete, skb);
+
+		hdev->stat.acl_tx++;
+		break;
+
+	case HCI_SCODATA_PKT:
+		if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
+			return -ENODEV;
+
+		urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
+		if (!urb)
+			return -ENOMEM;
+
+		pipe = usb_sndisocpipe(data->udev,
+					data->isoc_tx_ep->bEndpointAddress);
+
+		usb_fill_int_urb(urb, data->udev, pipe,
+				skb->data, skb->len, btusb_isoc_tx_complete,
+				skb, data->isoc_tx_ep->bInterval);
+
+		urb->transfer_flags  = URB_ISO_ASAP;
+
+		__fill_isoc_descriptor(urb, skb->len,
+				le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
+
+		hdev->stat.sco_tx++;
+		goto skip_waking;
+
+	default:
+		return -EILSEQ;
+	}
+
+	err = inc_tx(data);
+	if (err) {
+		usb_anchor_urb(urb, &data->deferred);
+		schedule_work(&data->waker);
+		err = 0;
+		goto done;
+	}
+
+skip_waking:
+	usb_anchor_urb(urb, &data->tx_anchor);
+
+	err = usb_submit_urb(urb, GFP_ATOMIC);
+	if (err < 0) {
+		if (err != -EPERM && err != -ENODEV)
+			BT_ERR("%s urb %p submission failed (%d)",
+						hdev->name, urb, -err);
+		kfree(urb->setup_packet);
+		usb_unanchor_urb(urb);
+	} else {
+		usb_mark_last_busy(data->udev);
+	}
+
+done:
+	usb_free_urb(urb);
+	return err;
+}
+
+static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
+{
+	struct btusb_data *data = hci_get_drvdata(hdev);
+
+	BT_DBG("%s evt %d", hdev->name, evt);
+
+	if (hdev->conn_hash.sco_num != data->sco_num) {
+		data->sco_num = hdev->conn_hash.sco_num;
+		schedule_work(&data->work);
+	}
+}
+
+static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
+{
+	struct btusb_data *data = hci_get_drvdata(hdev);
+	struct usb_interface *intf = data->isoc;
+	struct usb_endpoint_descriptor *ep_desc;
+	int i, err;
+
+	if (!data->isoc)
+		return -ENODEV;
+
+	err = usb_set_interface(data->udev, 1, altsetting);
+	if (err < 0) {
+		BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
+		return err;
+	}
+
+	data->isoc_altsetting = altsetting;
+
+	data->isoc_tx_ep = NULL;
+	data->isoc_rx_ep = NULL;
+
+	for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
+		ep_desc = &intf->cur_altsetting->endpoint[i].desc;
+
+		if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
+			data->isoc_tx_ep = ep_desc;
+			continue;
+		}
+
+		if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
+			data->isoc_rx_ep = ep_desc;
+			continue;
+		}
+	}
+
+	if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
+		BT_ERR("%s invalid SCO descriptors", hdev->name);
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+static void btusb_work(struct work_struct *work)
+{
+	struct btusb_data *data = container_of(work, struct btusb_data, work);
+	struct hci_dev *hdev = data->hdev;
+	int new_alts;
+	int err;
+
+	if (hdev->conn_hash.sco_num > 0) {
+		if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
+			err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
+			if (err < 0) {
+				clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
+				usb_kill_anchored_urbs(&data->isoc_anchor);
+				return;
+			}
+
+			set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
+		}
+
+		if (hdev->voice_setting & 0x0020) {
+			static const int alts[3] = { 2, 4, 5 };
+			new_alts = alts[hdev->conn_hash.sco_num - 1];
+		} else {
+			new_alts = hdev->conn_hash.sco_num;
+		}
+
+		if (data->isoc_altsetting != new_alts) {
+			clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
+			usb_kill_anchored_urbs(&data->isoc_anchor);
+
+			if (__set_isoc_interface(hdev, new_alts) < 0)
+				return;
+		}
+
+		if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
+			if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
+				clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
+			else
+				btusb_submit_isoc_urb(hdev, GFP_KERNEL);
+		}
+	} else {
+		clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
+		usb_kill_anchored_urbs(&data->isoc_anchor);
+
+		__set_isoc_interface(hdev, 0);
+		if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
+			usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
+	}
+}
+
+static void btusb_waker(struct work_struct *work)
+{
+	struct btusb_data *data = container_of(work, struct btusb_data, waker);
+	int err;
+
+	err = usb_autopm_get_interface(data->intf);
+	if (err < 0)
+		return;
+
+	usb_autopm_put_interface(data->intf);
+}
+
+static int btusb_setup_bcm92035(struct hci_dev *hdev)
+{
+	struct sk_buff *skb;
+	u8 val = 0x00;
+
+	BT_DBG("%s", hdev->name);
+
+	skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
+	if (IS_ERR(skb))
+		BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
+	else
+		kfree_skb(skb);
+
+	return 0;
+}
+
+struct intel_version {
+	u8 status;
+	u8 hw_platform;
+	u8 hw_variant;
+	u8 hw_revision;
+	u8 fw_variant;
+	u8 fw_revision;
+	u8 fw_build_num;
+	u8 fw_build_ww;
+	u8 fw_build_yy;
+	u8 fw_patch_num;
+} __packed;
+
+static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
+						struct intel_version *ver)
+{
+	const struct firmware *fw;
+	char fwname[64];
+	int ret;
+
+	snprintf(fwname, sizeof(fwname),
+		 "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
+		 ver->hw_platform, ver->hw_variant, ver->hw_revision,
+		 ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
+		 ver->fw_build_ww, ver->fw_build_yy);
+
+	ret = request_firmware(&fw, fwname, &hdev->dev);
+	if (ret < 0) {
+		if (ret == -EINVAL) {
+			BT_ERR("%s Intel firmware file request failed (%d)",
+			       hdev->name, ret);
+			return NULL;
+		}
+
+		BT_ERR("%s failed to open Intel firmware file: %s(%d)",
+		       hdev->name, fwname, ret);
+
+		/* If the correct firmware patch file is not found, use the
+		 * default firmware patch file instead
+		 */
+		snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
+			 ver->hw_platform, ver->hw_variant);
+		if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
+			BT_ERR("%s failed to open default Intel fw file: %s",
+			       hdev->name, fwname);
+			return NULL;
+		}
+	}
+
+	BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
+
+	return fw;
+}
+
+static int btusb_setup_intel_patching(struct hci_dev *hdev,
+				      const struct firmware *fw,
+				      const u8 **fw_ptr, int *disable_patch)
+{
+	struct sk_buff *skb;
+	struct hci_command_hdr *cmd;
+	const u8 *cmd_param;
+	struct hci_event_hdr *evt = NULL;
+	const u8 *evt_param = NULL;
+	int remain = fw->size - (*fw_ptr - fw->data);
+
+	/* The first byte indicates the types of the patch command or event.
+	 * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
+	 * in the current firmware buffer doesn't start with 0x01 or
+	 * the size of remain buffer is smaller than HCI command header,
+	 * the firmware file is corrupted and it should stop the patching
+	 * process.
+	 */
+	if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
+		BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
+		return -EINVAL;
+	}
+	(*fw_ptr)++;
+	remain--;
+
+	cmd = (struct hci_command_hdr *)(*fw_ptr);
+	*fw_ptr += sizeof(*cmd);
+	remain -= sizeof(*cmd);
+
+	/* Ensure that the remain firmware data is long enough than the length
+	 * of command parameter. If not, the firmware file is corrupted.
+	 */
+	if (remain < cmd->plen) {
+		BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
+		return -EFAULT;
+	}
+
+	/* If there is a command that loads a patch in the firmware
+	 * file, then enable the patch upon success, otherwise just
+	 * disable the manufacturer mode, for example patch activation
+	 * is not required when the default firmware patch file is used
+	 * because there are no patch data to load.
+	 */
+	if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
+		*disable_patch = 0;
+
+	cmd_param = *fw_ptr;
+	*fw_ptr += cmd->plen;
+	remain -= cmd->plen;
+
+	/* This reads the expected events when the above command is sent to the
+	 * device. Some vendor commands expects more than one events, for
+	 * example command status event followed by vendor specific event.
+	 * For this case, it only keeps the last expected event. so the command
+	 * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
+	 * last expected event.
+	 */
+	while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
+		(*fw_ptr)++;
+		remain--;
+
+		evt = (struct hci_event_hdr *)(*fw_ptr);
+		*fw_ptr += sizeof(*evt);
+		remain -= sizeof(*evt);
+
+		if (remain < evt->plen) {
+			BT_ERR("%s Intel fw corrupted: invalid evt len",
+			       hdev->name);
+			return -EFAULT;
+		}
+
+		evt_param = *fw_ptr;
+		*fw_ptr += evt->plen;
+		remain -= evt->plen;
+	}
+
+	/* Every HCI commands in the firmware file has its correspond event.
+	 * If event is not found or remain is smaller than zero, the firmware
+	 * file is corrupted.
+	 */
+	if (!evt || !evt_param || remain < 0) {
+		BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
+		return -EFAULT;
+	}
+
+	skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
+				cmd_param, evt->evt, HCI_INIT_TIMEOUT);
+	if (IS_ERR(skb)) {
+		BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
+		       hdev->name, cmd->opcode, PTR_ERR(skb));
+		return PTR_ERR(skb);
+	}
+
+	/* It ensures that the returned event matches the event data read from
+	 * the firmware file. At fist, it checks the length and then
+	 * the contents of the event.
+	 */
+	if (skb->len != evt->plen) {
+		BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
+		       le16_to_cpu(cmd->opcode));
+		kfree_skb(skb);
+		return -EFAULT;
+	}
+
+	if (memcmp(skb->data, evt_param, evt->plen)) {
+		BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
+		       hdev->name, le16_to_cpu(cmd->opcode));
+		kfree_skb(skb);
+		return -EFAULT;
+	}
+	kfree_skb(skb);
+
+	return 0;
+}
+
+static int btusb_setup_intel(struct hci_dev *hdev)
+{
+	struct sk_buff *skb;
+	const struct firmware *fw;
+	const u8 *fw_ptr;
+	int disable_patch;
+	struct intel_version *ver;
+
+	const u8 mfg_enable[] = { 0x01, 0x00 };
+	const u8 mfg_disable[] = { 0x00, 0x00 };
+	const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
+	const u8 mfg_reset_activate[] = { 0x00, 0x02 };
+
+	BT_DBG("%s", hdev->name);
+
+	/* The controller has a bug with the first HCI command sent to it
+	 * returning number of completed commands as zero. This would stall the
+	 * command processing in the Bluetooth core.
+	 *
+	 * As a workaround, send HCI Reset command first which will reset the
+	 * number of completed commands and allow normal command processing
+	 * from now on.
+	 */
+	skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
+	if (IS_ERR(skb)) {
+		BT_ERR("%s sending initial HCI reset command failed (%ld)",
+		       hdev->name, PTR_ERR(skb));
+		return PTR_ERR(skb);
+	}
+	kfree_skb(skb);
+
+	/* Read Intel specific controller version first to allow selection of
+	 * which firmware file to load.
+	 *
+	 * The returned information are hardware variant and revision plus
+	 * firmware variant, revision and build number.
+	 */
+	skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
+	if (IS_ERR(skb)) {
+		BT_ERR("%s reading Intel fw version command failed (%ld)",
+		       hdev->name, PTR_ERR(skb));
+		return PTR_ERR(skb);
+	}
+
+	if (skb->len != sizeof(*ver)) {
+		BT_ERR("%s Intel version event length mismatch", hdev->name);
+		kfree_skb(skb);
+		return -EIO;
+	}
+
+	ver = (struct intel_version *)skb->data;
+	if (ver->status) {
+		BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
+		       ver->status);
+		kfree_skb(skb);
+		return -bt_to_errno(ver->status);
+	}
+
+	BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
+		hdev->name, ver->hw_platform, ver->hw_variant,
+		ver->hw_revision, ver->fw_variant,  ver->fw_revision,
+		ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
+		ver->fw_patch_num);
+
+	/* fw_patch_num indicates the version of patch the device currently
+	 * have. If there is no patch data in the device, it is always 0x00.
+	 * So, if it is other than 0x00, no need to patch the deivce again.
+	 */
+	if (ver->fw_patch_num) {
+		BT_INFO("%s: Intel device is already patched. patch num: %02x",
+			hdev->name, ver->fw_patch_num);
+		kfree_skb(skb);
+		return 0;
+	}
+
+	/* Opens the firmware patch file based on the firmware version read
+	 * from the controller. If it fails to open the matching firmware
+	 * patch file, it tries to open the default firmware patch file.
+	 * If no patch file is found, allow the device to operate without
+	 * a patch.
+	 */
+	fw = btusb_setup_intel_get_fw(hdev, ver);
+	if (!fw) {
+		kfree_skb(skb);
+		return 0;
+	}
+	fw_ptr = fw->data;
+
+	/* This Intel specific command enables the manufacturer mode of the
+	 * controller.
+	 *
+	 * Only while this mode is enabled, the driver can download the
+	 * firmware patch data and configuration parameters.
+	 */
+	skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
+	if (IS_ERR(skb)) {
+		BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
+		       hdev->name, PTR_ERR(skb));
+		release_firmware(fw);
+		return PTR_ERR(skb);
+	}
+
+	if (skb->data[0]) {
+		u8 evt_status = skb->data[0];
+		BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
+		       hdev->name, evt_status);
+		kfree_skb(skb);
+		release_firmware(fw);
+		return -bt_to_errno(evt_status);
+	}
+	kfree_skb(skb);
+
+	disable_patch = 1;
+
+	/* The firmware data file consists of list of Intel specific HCI
+	 * commands and its expected events. The first byte indicates the
+	 * type of the message, either HCI command or HCI event.
+	 *
+	 * It reads the command and its expected event from the firmware file,
+	 * and send to the controller. Once __hci_cmd_sync_ev() returns,
+	 * the returned event is compared with the event read from the firmware
+	 * file and it will continue until all the messages are downloaded to
+	 * the controller.
+	 *
+	 * Once the firmware patching is completed successfully,
+	 * the manufacturer mode is disabled with reset and activating the
+	 * downloaded patch.
+	 *
+	 * If the firmware patching fails, the manufacturer mode is
+	 * disabled with reset and deactivating the patch.
+	 *
+	 * If the default patch file is used, no reset is done when disabling
+	 * the manufacturer.
+	 */
+	while (fw->size > fw_ptr - fw->data) {
+		int ret;
+
+		ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
+						 &disable_patch);
+		if (ret < 0)
+			goto exit_mfg_deactivate;
+	}
+
+	release_firmware(fw);
+
+	if (disable_patch)
+		goto exit_mfg_disable;
+
+	/* Patching completed successfully and disable the manufacturer mode
+	 * with reset and activate the downloaded firmware patches.
+	 */
+	skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
+			     mfg_reset_activate, HCI_INIT_TIMEOUT);
+	if (IS_ERR(skb)) {
+		BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
+		       hdev->name, PTR_ERR(skb));
+		return PTR_ERR(skb);
+	}
+	kfree_skb(skb);
+
+	BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
+		hdev->name);
+
+	return 0;
+
+exit_mfg_disable:
+	/* Disable the manufacturer mode without reset */
+	skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
+			     HCI_INIT_TIMEOUT);
+	if (IS_ERR(skb)) {
+		BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
+		       hdev->name, PTR_ERR(skb));
+		return PTR_ERR(skb);
+	}
+	kfree_skb(skb);
+
+	BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
+	return 0;
+
+exit_mfg_deactivate:
+	release_firmware(fw);
+
+	/* Patching failed. Disable the manufacturer mode with reset and
+	 * deactivate the downloaded firmware patches.
+	 */
+	skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
+			     mfg_reset_deactivate, HCI_INIT_TIMEOUT);
+	if (IS_ERR(skb)) {
+		BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
+		       hdev->name, PTR_ERR(skb));
+		return PTR_ERR(skb);
+	}
+	kfree_skb(skb);
+
+	BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
+		hdev->name);
+
+	return 0;
+}
+
+static int btusb_probe(struct usb_interface *intf,
+				const struct usb_device_id *id)
+{
+	struct usb_endpoint_descriptor *ep_desc;
+	struct btusb_data *data;
+	struct hci_dev *hdev;
+	int i, err;
+
+	BT_DBG("intf %p id %p", intf, id);
+
+	/* interface numbers are hardcoded in the spec */
+	if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
+		return -ENODEV;
+
+	if (!id->driver_info) {
+		const struct usb_device_id *match;
+		match = usb_match_id(intf, blacklist_table);
+		if (match)
+			id = match;
+	}
+
+	if (id->driver_info == BTUSB_IGNORE)
+		return -ENODEV;
+
+	if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
+		return -ENODEV;
+
+	if (ignore_csr && id->driver_info & BTUSB_CSR)
+		return -ENODEV;
+
+	if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
+		return -ENODEV;
+
+	if (id->driver_info & BTUSB_ATH3012) {
+		struct usb_device *udev = interface_to_usbdev(intf);
+
+		/* Old firmware would otherwise let ath3k driver load
+		 * patch and sysconfig files */
+		if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
+			return -ENODEV;
+	}
+
+	data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
+		ep_desc = &intf->cur_altsetting->endpoint[i].desc;
+
+		if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
+			data->intr_ep = ep_desc;
+			continue;
+		}
+
+		if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
+			data->bulk_tx_ep = ep_desc;
+			continue;
+		}
+
+		if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
+			data->bulk_rx_ep = ep_desc;
+			continue;
+		}
+	}
+
+	if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
+		return -ENODEV;
+
+	data->cmdreq_type = USB_TYPE_CLASS;
+
+	data->udev = interface_to_usbdev(intf);
+	data->intf = intf;
+
+	spin_lock_init(&data->lock);
+
+	INIT_WORK(&data->work, btusb_work);
+	INIT_WORK(&data->waker, btusb_waker);
+	spin_lock_init(&data->txlock);
+
+	init_usb_anchor(&data->tx_anchor);
+	init_usb_anchor(&data->intr_anchor);
+	init_usb_anchor(&data->bulk_anchor);
+	init_usb_anchor(&data->isoc_anchor);
+	init_usb_anchor(&data->deferred);
+
+	hdev = hci_alloc_dev();
+	if (!hdev)
+		return -ENOMEM;
+
+	hdev->bus = HCI_USB;
+	hci_set_drvdata(hdev, data);
+
+	data->hdev = hdev;
+
+	SET_HCIDEV_DEV(hdev, &intf->dev);
+
+	hdev->open   = btusb_open;
+	hdev->close  = btusb_close;
+	hdev->flush  = btusb_flush;
+	hdev->send   = btusb_send_frame;
+	hdev->notify = btusb_notify;
+
+	if (id->driver_info & BTUSB_BCM92035)
+		hdev->setup = btusb_setup_bcm92035;
+
+	if (id->driver_info & BTUSB_INTEL)
+		hdev->setup = btusb_setup_intel;
+
+	/* Interface numbers are hardcoded in the specification */
+	data->isoc = usb_ifnum_to_if(data->udev, 1);
+
+	if (!reset)
+		set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
+
+	if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
+		if (!disable_scofix)
+			set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
+	}
+
+	if (id->driver_info & BTUSB_BROKEN_ISOC)
+		data->isoc = NULL;
+
+	if (id->driver_info & BTUSB_DIGIANSWER) {
+		data->cmdreq_type = USB_TYPE_VENDOR;
+		set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
+	}
+
+	if (id->driver_info & BTUSB_CSR) {
+		struct usb_device *udev = data->udev;
+
+		/* Old firmware would otherwise execute USB reset */
+		if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
+			set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
+	}
+
+	if (id->driver_info & BTUSB_SNIFFER) {
+		struct usb_device *udev = data->udev;
+
+		/* New sniffer firmware has crippled HCI interface */
+		if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
+			set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
+
+		data->isoc = NULL;
+	}
+
+	if (data->isoc) {
+		err = usb_driver_claim_interface(&btusb_driver,
+							data->isoc, data);
+		if (err < 0) {
+			hci_free_dev(hdev);
+			return err;
+		}
+	}
+
+	err = hci_register_dev(hdev);
+	if (err < 0) {
+		hci_free_dev(hdev);
+		return err;
+	}
+
+	usb_set_intfdata(intf, data);
+
+	return 0;
+}
+
+static void btusb_disconnect(struct usb_interface *intf)
+{
+	struct btusb_data *data = usb_get_intfdata(intf);
+	struct hci_dev *hdev;
+
+	BT_DBG("intf %p", intf);
+
+	if (!data)
+		return;
+
+	hdev = data->hdev;
+	usb_set_intfdata(data->intf, NULL);
+
+	if (data->isoc)
+		usb_set_intfdata(data->isoc, NULL);
+
+	hci_unregister_dev(hdev);
+
+	if (intf == data->isoc)
+		usb_driver_release_interface(&btusb_driver, data->intf);
+	else if (data->isoc)
+		usb_driver_release_interface(&btusb_driver, data->isoc);
+
+	hci_free_dev(hdev);
+}
+
+#ifdef CONFIG_PM
+static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
+{
+	struct btusb_data *data = usb_get_intfdata(intf);
+
+	BT_DBG("intf %p", intf);
+
+	if (data->suspend_count++)
+		return 0;
+
+	spin_lock_irq(&data->txlock);
+	if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
+		set_bit(BTUSB_SUSPENDING, &data->flags);
+		spin_unlock_irq(&data->txlock);
+	} else {
+		spin_unlock_irq(&data->txlock);
+		data->suspend_count--;
+		return -EBUSY;
+	}
+
+	cancel_work_sync(&data->work);
+
+	btusb_stop_traffic(data);
+	usb_kill_anchored_urbs(&data->tx_anchor);
+
+	return 0;
+}
+
+static void play_deferred(struct btusb_data *data)
+{
+	struct urb *urb;
+	int err;
+
+	while ((urb = usb_get_from_anchor(&data->deferred))) {
+		err = usb_submit_urb(urb, GFP_ATOMIC);
+		if (err < 0)
+			break;
+
+		data->tx_in_flight++;
+	}
+	usb_scuttle_anchored_urbs(&data->deferred);
+}
+
+static int btusb_resume(struct usb_interface *intf)
+{
+	struct btusb_data *data = usb_get_intfdata(intf);
+	struct hci_dev *hdev = data->hdev;
+	int err = 0;
+
+	BT_DBG("intf %p", intf);
+
+	if (--data->suspend_count)
+		return 0;
+
+	if (!test_bit(HCI_RUNNING, &hdev->flags))
+		goto done;
+
+	if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
+		err = btusb_submit_intr_urb(hdev, GFP_NOIO);
+		if (err < 0) {
+			clear_bit(BTUSB_INTR_RUNNING, &data->flags);
+			goto failed;
+		}
+	}
+
+	if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
+		err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
+		if (err < 0) {
+			clear_bit(BTUSB_BULK_RUNNING, &data->flags);
+			goto failed;
+		}
+
+		btusb_submit_bulk_urb(hdev, GFP_NOIO);
+	}
+
+	if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
+		if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
+			clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
+		else
+			btusb_submit_isoc_urb(hdev, GFP_NOIO);
+	}
+
+	spin_lock_irq(&data->txlock);
+	play_deferred(data);
+	clear_bit(BTUSB_SUSPENDING, &data->flags);
+	spin_unlock_irq(&data->txlock);
+	schedule_work(&data->work);
+
+	return 0;
+
+failed:
+	usb_scuttle_anchored_urbs(&data->deferred);
+done:
+	spin_lock_irq(&data->txlock);
+	clear_bit(BTUSB_SUSPENDING, &data->flags);
+	spin_unlock_irq(&data->txlock);
+
+	return err;
+}
+#endif
+
+static struct usb_driver btusb_driver = {
+	.name		= "btusb",
+	.probe		= btusb_probe,
+	.disconnect	= btusb_disconnect,
+#ifdef CONFIG_PM
+	.suspend	= btusb_suspend,
+	.resume		= btusb_resume,
+#endif
+	.id_table	= btusb_table,
+	.supports_autosuspend = 1,
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,5,0))
+	.disable_hub_initiated_lpm = 1,
+#endif
+};
+
+module_usb_driver(btusb_driver);
+
+module_param(ignore_dga, bool, 0644);
+MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
+
+module_param(ignore_csr, bool, 0644);
+MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
+
+module_param(ignore_sniffer, bool, 0644);
+MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
+
+module_param(disable_scofix, bool, 0644);
+MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
+
+module_param(force_scofix, bool, 0644);
+MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
+
+module_param(reset, bool, 0644);
+MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
+
+MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
+MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
+MODULE_VERSION(VERSION);
+MODULE_LICENSE("GPL");