drivers/bluetooth/bfusb.c - kernel/msm-4.9 - Gitiles

 /*
  *
  *  AVM BlueFRITZ! USB driver
  *
  *  Copyright (C) 2003  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/config.h>
 #include <linux/module.h>

 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/slab.h>
 #include <linux/types.h>
 #include <linux/sched.h>
 #include <linux/errno.h>
 #include <linux/skbuff.h>

 #include <linux/device.h>
 #include <linux/firmware.h>

 #include <linux/usb.h>

 #include <net/bluetooth/bluetooth.h>
 #include <net/bluetooth/hci_core.h>

 #ifndef CONFIG_BT_HCIBFUSB_DEBUG
 #undef  BT_DBG
 #define BT_DBG(D...)
 #endif

 #define VERSION "1.1"

 static int ignore = 0;

 static struct usb_driver bfusb_driver;

 static struct usb_device_id bfusb_table[] = {
 	/* AVM BlueFRITZ! USB */
 	{ USB_DEVICE(0x057c, 0x2200) },

 	{ }	/* Terminating entry */
 };

 MODULE_DEVICE_TABLE(usb, bfusb_table);


 #define BFUSB_MAX_BLOCK_SIZE	256

 #define BFUSB_BLOCK_TIMEOUT	3000

 #define BFUSB_TX_PROCESS	1
 #define BFUSB_TX_WAKEUP		2

 #define BFUSB_MAX_BULK_TX	2
 #define BFUSB_MAX_BULK_RX	2

 struct bfusb {
 	struct hci_dev		*hdev;

 	unsigned long		state;

 	struct usb_device	*udev;

 	unsigned int		bulk_in_ep;
 	unsigned int		bulk_out_ep;
 	unsigned int		bulk_pkt_size;

 	rwlock_t		lock;

 	struct sk_buff_head	transmit_q;

 	struct sk_buff		*reassembly;

 	atomic_t		pending_tx;
 	struct sk_buff_head	pending_q;
 	struct sk_buff_head	completed_q;
 };

 struct bfusb_scb {
 	struct urb *urb;
 };

 static void bfusb_tx_complete(struct urb *urb, struct pt_regs *regs);
 static void bfusb_rx_complete(struct urb *urb, struct pt_regs *regs);

 static struct urb *bfusb_get_completed(struct bfusb *bfusb)
 {
 	struct sk_buff *skb;
 	struct urb *urb = NULL;

 	BT_DBG("bfusb %p", bfusb);

 	skb = skb_dequeue(&bfusb->completed_q);
 	if (skb) {
 		urb = ((struct bfusb_scb *) skb->cb)->urb;
 		kfree_skb(skb);
 	}

 	return urb;
 }

 static void bfusb_unlink_urbs(struct bfusb *bfusb)
 {
 	struct sk_buff *skb;
 	struct urb *urb;

 	BT_DBG("bfusb %p", bfusb);

 	while ((skb = skb_dequeue(&bfusb->pending_q))) {
 		urb = ((struct bfusb_scb *) skb->cb)->urb;
 		usb_kill_urb(urb);
 		skb_queue_tail(&bfusb->completed_q, skb);
 	}

 	while ((urb = bfusb_get_completed(bfusb)))
 		usb_free_urb(urb);
 }


 static int bfusb_send_bulk(struct bfusb *bfusb, struct sk_buff *skb)
 {
 	struct bfusb_scb *scb = (void *) skb->cb;
 	struct urb *urb = bfusb_get_completed(bfusb);
 	int err, pipe;

 	BT_DBG("bfusb %p skb %p len %d", bfusb, skb, skb->len);

 	if (!urb && !(urb = usb_alloc_urb(0, GFP_ATOMIC)))
 		return -ENOMEM;

 	pipe = usb_sndbulkpipe(bfusb->udev, bfusb->bulk_out_ep);

 	usb_fill_bulk_urb(urb, bfusb->udev, pipe, skb->data, skb->len,
 			bfusb_tx_complete, skb);

 	scb->urb = urb;

 	skb_queue_tail(&bfusb->pending_q, skb);

 	err = usb_submit_urb(urb, GFP_ATOMIC);
 	if (err) {
 		BT_ERR("%s bulk tx submit failed urb %p err %d",
 					bfusb->hdev->name, urb, err);
 		skb_unlink(skb, &bfusb->pending_q);
 		usb_free_urb(urb);
 	} else
 		atomic_inc(&bfusb->pending_tx);

 	return err;
 }

 static void bfusb_tx_wakeup(struct bfusb *bfusb)
 {
 	struct sk_buff *skb;

 	BT_DBG("bfusb %p", bfusb);

 	if (test_and_set_bit(BFUSB_TX_PROCESS, &bfusb->state)) {
 		set_bit(BFUSB_TX_WAKEUP, &bfusb->state);
 		return;
 	}

 	do {
 		clear_bit(BFUSB_TX_WAKEUP, &bfusb->state);

 		while ((atomic_read(&bfusb->pending_tx) < BFUSB_MAX_BULK_TX) &&
 				(skb = skb_dequeue(&bfusb->transmit_q))) {
 			if (bfusb_send_bulk(bfusb, skb) < 0) {
 				skb_queue_head(&bfusb->transmit_q, skb);
 				break;
 			}
 		}

 	} while (test_bit(BFUSB_TX_WAKEUP, &bfusb->state));

 	clear_bit(BFUSB_TX_PROCESS, &bfusb->state);
 }

 static void bfusb_tx_complete(struct urb *urb, struct pt_regs *regs)
 {
 	struct sk_buff *skb = (struct sk_buff *) urb->context;
 	struct bfusb *bfusb = (struct bfusb *) skb->dev;

 	BT_DBG("bfusb %p urb %p skb %p len %d", bfusb, urb, skb, skb->len);

 	atomic_dec(&bfusb->pending_tx);

 	if (!test_bit(HCI_RUNNING, &bfusb->hdev->flags))
 		return;

 	if (!urb->status)
 		bfusb->hdev->stat.byte_tx += skb->len;
 	else
 		bfusb->hdev->stat.err_tx++;

 	read_lock(&bfusb->lock);

 	skb_unlink(skb, &bfusb->pending_q);
 	skb_queue_tail(&bfusb->completed_q, skb);

 	bfusb_tx_wakeup(bfusb);

 	read_unlock(&bfusb->lock);
 }


 static int bfusb_rx_submit(struct bfusb *bfusb, struct urb *urb)
 {
 	struct bfusb_scb *scb;
 	struct sk_buff *skb;
 	int err, pipe, size = HCI_MAX_FRAME_SIZE + 32;

 	BT_DBG("bfusb %p urb %p", bfusb, urb);

 	if (!urb && !(urb = usb_alloc_urb(0, GFP_ATOMIC)))
 		return -ENOMEM;

 	if (!(skb = bt_skb_alloc(size, GFP_ATOMIC))) {
 		usb_free_urb(urb);
 		return -ENOMEM;
 	}

 	skb->dev = (void *) bfusb;

 	scb = (struct bfusb_scb *) skb->cb;
 	scb->urb = urb;

 	pipe = usb_rcvbulkpipe(bfusb->udev, bfusb->bulk_in_ep);

 	usb_fill_bulk_urb(urb, bfusb->udev, pipe, skb->data, size,
 			bfusb_rx_complete, skb);

 	skb_queue_tail(&bfusb->pending_q, skb);

 	err = usb_submit_urb(urb, GFP_ATOMIC);
 	if (err) {
 		BT_ERR("%s bulk rx submit failed urb %p err %d",
 					bfusb->hdev->name, urb, err);
 		skb_unlink(skb, &bfusb->pending_q);
 		kfree_skb(skb);
 		usb_free_urb(urb);
 	}

 	return err;
 }

 static inline int bfusb_recv_block(struct bfusb *bfusb, int hdr, unsigned char *data, int len)
 {
 	BT_DBG("bfusb %p hdr 0x%02x data %p len %d", bfusb, hdr, data, len);

 	if (hdr & 0x10) {
 		BT_ERR("%s error in block", bfusb->hdev->name);
 		if (bfusb->reassembly)
 			kfree_skb(bfusb->reassembly);
 		bfusb->reassembly = NULL;
 		return -EIO;
 	}

 	if (hdr & 0x04) {
 		struct sk_buff *skb;
 		unsigned char pkt_type;
 		int pkt_len = 0;

 		if (bfusb->reassembly) {
 			BT_ERR("%s unexpected start block", bfusb->hdev->name);
 			kfree_skb(bfusb->reassembly);
 			bfusb->reassembly = NULL;
 		}

 		if (len < 1) {
 			BT_ERR("%s no packet type found", bfusb->hdev->name);
 			return -EPROTO;
 		}

 		pkt_type = *data++; len--;

 		switch (pkt_type) {
 		case HCI_EVENT_PKT:
 			if (len >= HCI_EVENT_HDR_SIZE) {
 				struct hci_event_hdr *hdr = (struct hci_event_hdr *) data;
 				pkt_len = HCI_EVENT_HDR_SIZE + hdr->plen;
 			} else {
 				BT_ERR("%s event block is too short", bfusb->hdev->name);
 				return -EILSEQ;
 			}
 			break;

 		case HCI_ACLDATA_PKT:
 			if (len >= HCI_ACL_HDR_SIZE) {
 				struct hci_acl_hdr *hdr = (struct hci_acl_hdr *) data;
 				pkt_len = HCI_ACL_HDR_SIZE + __le16_to_cpu(hdr->dlen);
 			} else {
 				BT_ERR("%s data block is too short", bfusb->hdev->name);
 				return -EILSEQ;
 			}
 			break;

 		case HCI_SCODATA_PKT:
 			if (len >= HCI_SCO_HDR_SIZE) {
 				struct hci_sco_hdr *hdr = (struct hci_sco_hdr *) data;
 				pkt_len = HCI_SCO_HDR_SIZE + hdr->dlen;
 			} else {
 				BT_ERR("%s audio block is too short", bfusb->hdev->name);
 				return -EILSEQ;
 			}
 			break;
 		}

 		skb = bt_skb_alloc(pkt_len, GFP_ATOMIC);
 		if (!skb) {
 			BT_ERR("%s no memory for the packet", bfusb->hdev->name);
 			return -ENOMEM;
 		}

 		skb->dev = (void *) bfusb->hdev;
 		skb->pkt_type = pkt_type;

 		bfusb->reassembly = skb;
 	} else {
 		if (!bfusb->reassembly) {
 			BT_ERR("%s unexpected continuation block", bfusb->hdev->name);
 			return -EIO;
 		}
 	}

 	if (len > 0)
 		memcpy(skb_put(bfusb->reassembly, len), data, len);

 	if (hdr & 0x08) {
 		hci_recv_frame(bfusb->reassembly);
 		bfusb->reassembly = NULL;
 	}

 	return 0;
 }

 static void bfusb_rx_complete(struct urb *urb, struct pt_regs *regs)
 {
 	struct sk_buff *skb = (struct sk_buff *) urb->context;
 	struct bfusb *bfusb = (struct bfusb *) skb->dev;
 	unsigned char *buf = urb->transfer_buffer;
 	int count = urb->actual_length;
 	int err, hdr, len;

 	BT_DBG("bfusb %p urb %p skb %p len %d", bfusb, urb, skb, skb->len);

 	read_lock(&bfusb->lock);

 	if (!test_bit(HCI_RUNNING, &bfusb->hdev->flags))
 		goto unlock;

 	if (urb->status || !count)
 		goto resubmit;

 	bfusb->hdev->stat.byte_rx += count;

 	skb_put(skb, count);

 	while (count) {
 		hdr = buf[0] | (buf[1] << 8);

 		if (hdr & 0x4000) {
 			len = 0;
 			count -= 2;
 			buf   += 2;
 		} else {
 			len = (buf[2] == 0) ? 256 : buf[2];
 			count -= 3;
 			buf   += 3;
 		}

 		if (count < len) {
 			BT_ERR("%s block extends over URB buffer ranges",
 					bfusb->hdev->name);
 		}

 		if ((hdr & 0xe1) == 0xc1)
 			bfusb_recv_block(bfusb, hdr, buf, len);

 		count -= len;
 		buf   += len;
 	}

 	skb_unlink(skb, &bfusb->pending_q);
 	kfree_skb(skb);

 	bfusb_rx_submit(bfusb, urb);

 	read_unlock(&bfusb->lock);

 	return;

 resubmit:
 	urb->dev = bfusb->udev;

 	err = usb_submit_urb(urb, GFP_ATOMIC);
 	if (err) {
 		BT_ERR("%s bulk resubmit failed urb %p err %d",
 					bfusb->hdev->name, urb, err);
 	}

 unlock:
 	read_unlock(&bfusb->lock);
 }


 static int bfusb_open(struct hci_dev *hdev)
 {
 	struct bfusb *bfusb = (struct bfusb *) hdev->driver_data;
 	unsigned long flags;
 	int i, err;

 	BT_DBG("hdev %p bfusb %p", hdev, bfusb);

 	if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 		return 0;

 	write_lock_irqsave(&bfusb->lock, flags);

 	err = bfusb_rx_submit(bfusb, NULL);
 	if (!err) {
 		for (i = 1; i < BFUSB_MAX_BULK_RX; i++)
 			bfusb_rx_submit(bfusb, NULL);
 	} else {
 		clear_bit(HCI_RUNNING, &hdev->flags);
 	}

 	write_unlock_irqrestore(&bfusb->lock, flags);

 	return err;
 }

 static int bfusb_flush(struct hci_dev *hdev)
 {
 	struct bfusb *bfusb = (struct bfusb *) hdev->driver_data;

 	BT_DBG("hdev %p bfusb %p", hdev, bfusb);

 	skb_queue_purge(&bfusb->transmit_q);

 	return 0;
 }

 static int bfusb_close(struct hci_dev *hdev)
 {
 	struct bfusb *bfusb = (struct bfusb *) hdev->driver_data;
 	unsigned long flags;

 	BT_DBG("hdev %p bfusb %p", hdev, bfusb);

 	if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 		return 0;

 	write_lock_irqsave(&bfusb->lock, flags);
 	write_unlock_irqrestore(&bfusb->lock, flags);

 	bfusb_unlink_urbs(bfusb);
 	bfusb_flush(hdev);

 	return 0;
 }

 static int bfusb_send_frame(struct sk_buff *skb)
 {
 	struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 	struct bfusb *bfusb;
 	struct sk_buff *nskb;
 	unsigned char buf[3];
 	int sent = 0, size, count;

 	BT_DBG("hdev %p skb %p type %d len %d", hdev, skb, skb->pkt_type, skb->len);

 	if (!hdev) {
 		BT_ERR("Frame for unknown HCI device (hdev=NULL)");
 		return -ENODEV;
 	}

 	if (!test_bit(HCI_RUNNING, &hdev->flags))
 		return -EBUSY;

 	bfusb = (struct bfusb *) hdev->driver_data;

 	switch (skb->pkt_type) {
 	case HCI_COMMAND_PKT:
 		hdev->stat.cmd_tx++;
 		break;
 	case HCI_ACLDATA_PKT:
 		hdev->stat.acl_tx++;
 		break;
 	case HCI_SCODATA_PKT:
 		hdev->stat.sco_tx++;
 		break;
 	};

 	/* Prepend skb with frame type */
 	memcpy(skb_push(skb, 1), &(skb->pkt_type), 1);

 	count = skb->len;

 	/* Max HCI frame size seems to be 1511 + 1 */
 	if (!(nskb = bt_skb_alloc(count + 32, GFP_ATOMIC))) {
 		BT_ERR("Can't allocate memory for new packet");
 		return -ENOMEM;
 	}

 	nskb->dev = (void *) bfusb;

 	while (count) {
 		size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE);

 		buf[0] = 0xc1 | ((sent == 0) ? 0x04 : 0) | ((count == size) ? 0x08 : 0);
 		buf[1] = 0x00;
 		buf[2] = (size == BFUSB_MAX_BLOCK_SIZE) ? 0 : size;

 		memcpy(skb_put(nskb, 3), buf, 3);
 		memcpy(skb_put(nskb, size), skb->data + sent, size);

 		sent  += size;
 		count -= size;
 	}

 	/* Don't send frame with multiple size of bulk max packet */
 	if ((nskb->len % bfusb->bulk_pkt_size) == 0) {
 		buf[0] = 0xdd;
 		buf[1] = 0x00;
 		memcpy(skb_put(nskb, 2), buf, 2);
 	}

 	read_lock(&bfusb->lock);

 	skb_queue_tail(&bfusb->transmit_q, nskb);
 	bfusb_tx_wakeup(bfusb);

 	read_unlock(&bfusb->lock);

 	kfree_skb(skb);

 	return 0;
 }

 static void bfusb_destruct(struct hci_dev *hdev)
 {
 	struct bfusb *bfusb = (struct bfusb *) hdev->driver_data;

 	BT_DBG("hdev %p bfusb %p", hdev, bfusb);

 	kfree(bfusb);
 }

 static int bfusb_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
 {
 	return -ENOIOCTLCMD;
 }


 static int bfusb_load_firmware(struct bfusb *bfusb, unsigned char *firmware, int count)
 {
 	unsigned char *buf;
 	int err, pipe, len, size, sent = 0;

 	BT_DBG("bfusb %p udev %p", bfusb, bfusb->udev);

 	BT_INFO("BlueFRITZ! USB loading firmware");

 	pipe = usb_sndctrlpipe(bfusb->udev, 0);

 	if (usb_control_msg(bfusb->udev, pipe, USB_REQ_SET_CONFIGURATION,
 				0, 1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT) < 0) {
 		BT_ERR("Can't change to loading configuration");
 		return -EBUSY;
 	}

 	bfusb->udev->toggle[0] = bfusb->udev->toggle[1] = 0;

 	buf = kmalloc(BFUSB_MAX_BLOCK_SIZE + 3, GFP_ATOMIC);
 	if (!buf) {
 		BT_ERR("Can't allocate memory chunk for firmware");
 		return -ENOMEM;
 	}

 	pipe = usb_sndbulkpipe(bfusb->udev, bfusb->bulk_out_ep);

 	while (count) {
 		size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE + 3);

 		memcpy(buf, firmware + sent, size);

 		err = usb_bulk_msg(bfusb->udev, pipe, buf, size,
 					&len, BFUSB_BLOCK_TIMEOUT);

 		if (err || (len != size)) {
 			BT_ERR("Error in firmware loading");
 			goto error;
 		}

 		sent  += size;
 		count -= size;
 	}

 	if ((err = usb_bulk_msg(bfusb->udev, pipe, NULL, 0,
 				&len, BFUSB_BLOCK_TIMEOUT)) < 0) {
 		BT_ERR("Error in null packet request");
 		goto error;
 	}

 	pipe = usb_sndctrlpipe(bfusb->udev, 0);

         if ((err = usb_control_msg(bfusb->udev, pipe, USB_REQ_SET_CONFIGURATION,
 				0, 2, 0, NULL, 0, USB_CTRL_SET_TIMEOUT)) < 0) {
 		BT_ERR("Can't change to running configuration");
 		goto error;
 	}

 	bfusb->udev->toggle[0] = bfusb->udev->toggle[1] = 0;

 	BT_INFO("BlueFRITZ! USB device ready");

 	kfree(buf);
 	return 0;

 error:
 	kfree(buf);

 	pipe = usb_sndctrlpipe(bfusb->udev, 0);

 	usb_control_msg(bfusb->udev, pipe, USB_REQ_SET_CONFIGURATION,
 				0, 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);

 	return err;
 }

 static int bfusb_probe(struct usb_interface *intf, const struct usb_device_id *id)
 {
 	const struct firmware *firmware;
 	struct usb_device *udev = interface_to_usbdev(intf);
 	struct usb_host_endpoint *bulk_out_ep;
 	struct usb_host_endpoint *bulk_in_ep;
 	struct hci_dev *hdev;
 	struct bfusb *bfusb;

 	BT_DBG("intf %p id %p", intf, id);

 	if (ignore)
 		return -ENODEV;

 	/* Check number of endpoints */
 	if (intf->cur_altsetting->desc.bNumEndpoints < 2)
 		return -EIO;

 	bulk_out_ep = &intf->cur_altsetting->endpoint[0];
 	bulk_in_ep  = &intf->cur_altsetting->endpoint[1];

 	if (!bulk_out_ep || !bulk_in_ep) {
 		BT_ERR("Bulk endpoints not found");
 		goto done;
 	}

 	/* Initialize control structure and load firmware */
 	if (!(bfusb = kmalloc(sizeof(struct bfusb), GFP_KERNEL))) {
 		BT_ERR("Can't allocate memory for control structure");
 		goto done;
 	}

 	memset(bfusb, 0, sizeof(struct bfusb));

 	bfusb->udev = udev;
 	bfusb->bulk_in_ep    = bulk_in_ep->desc.bEndpointAddress;
 	bfusb->bulk_out_ep   = bulk_out_ep->desc.bEndpointAddress;
 	bfusb->bulk_pkt_size = le16_to_cpu(bulk_out_ep->desc.wMaxPacketSize);

 	rwlock_init(&bfusb->lock);

 	bfusb->reassembly = NULL;

 	skb_queue_head_init(&bfusb->transmit_q);
 	skb_queue_head_init(&bfusb->pending_q);
 	skb_queue_head_init(&bfusb->completed_q);

 	if (request_firmware(&firmware, "bfubase.frm", &udev->dev) < 0) {
 		BT_ERR("Firmware request failed");
 		goto error;
 	}

 	BT_DBG("firmware data %p size %d", firmware->data, firmware->size);

 	if (bfusb_load_firmware(bfusb, firmware->data, firmware->size) < 0) {
 		BT_ERR("Firmware loading failed");
 		goto release;
 	}

 	release_firmware(firmware);

 	/* Initialize and register HCI device */
 	hdev = hci_alloc_dev();
 	if (!hdev) {
 		BT_ERR("Can't allocate HCI device");
 		goto error;
 	}

 	bfusb->hdev = hdev;

 	hdev->type = HCI_USB;
 	hdev->driver_data = bfusb;
 	SET_HCIDEV_DEV(hdev, &intf->dev);

 	hdev->open     = bfusb_open;
 	hdev->close    = bfusb_close;
 	hdev->flush    = bfusb_flush;
 	hdev->send     = bfusb_send_frame;
 	hdev->destruct = bfusb_destruct;
 	hdev->ioctl    = bfusb_ioctl;

 	hdev->owner = THIS_MODULE;

 	if (hci_register_dev(hdev) < 0) {
 		BT_ERR("Can't register HCI device");
 		hci_free_dev(hdev);
 		goto error;
 	}

 	usb_set_intfdata(intf, bfusb);

 	return 0;

 release:
 	release_firmware(firmware);

 error:
 	kfree(bfusb);

 done:
 	return -EIO;
 }

 static void bfusb_disconnect(struct usb_interface *intf)
 {
 	struct bfusb *bfusb = usb_get_intfdata(intf);
 	struct hci_dev *hdev = bfusb->hdev;

 	BT_DBG("intf %p", intf);

 	if (!hdev)
 		return;

 	usb_set_intfdata(intf, NULL);

 	bfusb_close(hdev);

 	if (hci_unregister_dev(hdev) < 0)
 		BT_ERR("Can't unregister HCI device %s", hdev->name);

 	hci_free_dev(hdev);
 }

 static struct usb_driver bfusb_driver = {
 	.owner		= THIS_MODULE,
 	.name		= "bfusb",
 	.probe		= bfusb_probe,
 	.disconnect	= bfusb_disconnect,
 	.id_table	= bfusb_table,
 };

 static int __init bfusb_init(void)
 {
 	int err;

 	BT_INFO("BlueFRITZ! USB driver ver %s", VERSION);

 	if ((err = usb_register(&bfusb_driver)) < 0)
 		BT_ERR("Failed to register BlueFRITZ! USB driver");

 	return err;
 }

 static void __exit bfusb_exit(void)
 {
 	usb_deregister(&bfusb_driver);
 }

 module_init(bfusb_init);
 module_exit(bfusb_exit);

 module_param(ignore, bool, 0644);
 MODULE_PARM_DESC(ignore, "Ignore devices from the matching table");

 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
 MODULE_DESCRIPTION("BlueFRITZ! USB driver ver " VERSION);
 MODULE_VERSION(VERSION);
 MODULE_LICENSE("GPL");
	/*
	*
	* AVM BlueFRITZ! USB driver
	*
	* Copyright (C) 2003 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/config.h>
	#include <linux/module.h>

	#include <linux/kernel.h>
	#include <linux/init.h>
	#include <linux/slab.h>
	#include <linux/types.h>
	#include <linux/sched.h>
	#include <linux/errno.h>
	#include <linux/skbuff.h>

	#include <linux/device.h>
	#include <linux/firmware.h>

	#include <linux/usb.h>

	#include <net/bluetooth/bluetooth.h>
	#include <net/bluetooth/hci_core.h>

	#ifndef CONFIG_BT_HCIBFUSB_DEBUG
	#undef BT_DBG
	#define BT_DBG(D...)
	#endif

	#define VERSION "1.1"

	static int ignore = 0;

	static struct usb_driver bfusb_driver;

	static struct usb_device_id bfusb_table[] = {
	/* AVM BlueFRITZ! USB */
	{ USB_DEVICE(0x057c, 0x2200) },

	{ } /* Terminating entry */
	};

	MODULE_DEVICE_TABLE(usb, bfusb_table);


	#define BFUSB_MAX_BLOCK_SIZE 256

	#define BFUSB_BLOCK_TIMEOUT 3000

	#define BFUSB_TX_PROCESS 1
	#define BFUSB_TX_WAKEUP 2

	#define BFUSB_MAX_BULK_TX 2
	#define BFUSB_MAX_BULK_RX 2

	struct bfusb {
	struct hci_dev *hdev;

	unsigned long state;

	struct usb_device *udev;

	unsigned int bulk_in_ep;
	unsigned int bulk_out_ep;
	unsigned int bulk_pkt_size;

	rwlock_t lock;

	struct sk_buff_head transmit_q;

	struct sk_buff *reassembly;

	atomic_t pending_tx;
	struct sk_buff_head pending_q;
	struct sk_buff_head completed_q;
	};

	struct bfusb_scb {
	struct urb *urb;
	};

	static void bfusb_tx_complete(struct urb urb, struct pt_regs regs);
	static void bfusb_rx_complete(struct urb urb, struct pt_regs regs);

	static struct urb bfusb_get_completed(struct bfusb bfusb)
	{
	struct sk_buff *skb;
	struct urb *urb = NULL;

	BT_DBG("bfusb %p", bfusb);

	skb = skb_dequeue(&bfusb->completed_q);
	if (skb) {
	urb = ((struct bfusb_scb *) skb->cb)->urb;
	kfree_skb(skb);
	}

	return urb;
	}

	static void bfusb_unlink_urbs(struct bfusb *bfusb)
	{
	struct sk_buff *skb;
	struct urb *urb;

	BT_DBG("bfusb %p", bfusb);

	while ((skb = skb_dequeue(&bfusb->pending_q))) {
	urb = ((struct bfusb_scb *) skb->cb)->urb;
	usb_kill_urb(urb);
	skb_queue_tail(&bfusb->completed_q, skb);
	}

	while ((urb = bfusb_get_completed(bfusb)))
	usb_free_urb(urb);
	}


	static int bfusb_send_bulk(struct bfusb bfusb, struct sk_buff skb)
	{
	struct bfusb_scb scb = (void ) skb->cb;
	struct urb *urb = bfusb_get_completed(bfusb);
	int err, pipe;

	BT_DBG("bfusb %p skb %p len %d", bfusb, skb, skb->len);

	if (!urb && !(urb = usb_alloc_urb(0, GFP_ATOMIC)))
	return -ENOMEM;

	pipe = usb_sndbulkpipe(bfusb->udev, bfusb->bulk_out_ep);

	usb_fill_bulk_urb(urb, bfusb->udev, pipe, skb->data, skb->len,
	bfusb_tx_complete, skb);

	scb->urb = urb;

	skb_queue_tail(&bfusb->pending_q, skb);

	err = usb_submit_urb(urb, GFP_ATOMIC);
	if (err) {
	BT_ERR("%s bulk tx submit failed urb %p err %d",
	bfusb->hdev->name, urb, err);
	skb_unlink(skb, &bfusb->pending_q);
	usb_free_urb(urb);
	} else
	atomic_inc(&bfusb->pending_tx);

	return err;
	}

	static void bfusb_tx_wakeup(struct bfusb *bfusb)
	{
	struct sk_buff *skb;

	BT_DBG("bfusb %p", bfusb);

	if (test_and_set_bit(BFUSB_TX_PROCESS, &bfusb->state)) {
	set_bit(BFUSB_TX_WAKEUP, &bfusb->state);
	return;
	}

	do {
	clear_bit(BFUSB_TX_WAKEUP, &bfusb->state);

	while ((atomic_read(&bfusb->pending_tx) < BFUSB_MAX_BULK_TX) &&
	(skb = skb_dequeue(&bfusb->transmit_q))) {
	if (bfusb_send_bulk(bfusb, skb) < 0) {
	skb_queue_head(&bfusb->transmit_q, skb);
	break;
	}
	}

	} while (test_bit(BFUSB_TX_WAKEUP, &bfusb->state));

	clear_bit(BFUSB_TX_PROCESS, &bfusb->state);
	}

	static void bfusb_tx_complete(struct urb urb, struct pt_regs regs)
	{
	struct sk_buff skb = (struct sk_buff ) urb->context;
	struct bfusb bfusb = (struct bfusb ) skb->dev;

	BT_DBG("bfusb %p urb %p skb %p len %d", bfusb, urb, skb, skb->len);

	atomic_dec(&bfusb->pending_tx);

	if (!test_bit(HCI_RUNNING, &bfusb->hdev->flags))
	return;

	if (!urb->status)
	bfusb->hdev->stat.byte_tx += skb->len;
	else
	bfusb->hdev->stat.err_tx++;

	read_lock(&bfusb->lock);

	skb_unlink(skb, &bfusb->pending_q);
	skb_queue_tail(&bfusb->completed_q, skb);

	bfusb_tx_wakeup(bfusb);

	read_unlock(&bfusb->lock);
	}


	static int bfusb_rx_submit(struct bfusb bfusb, struct urb urb)
	{
	struct bfusb_scb *scb;
	struct sk_buff *skb;
	int err, pipe, size = HCI_MAX_FRAME_SIZE + 32;

	BT_DBG("bfusb %p urb %p", bfusb, urb);

	if (!urb && !(urb = usb_alloc_urb(0, GFP_ATOMIC)))
	return -ENOMEM;

	if (!(skb = bt_skb_alloc(size, GFP_ATOMIC))) {
	usb_free_urb(urb);
	return -ENOMEM;
	}

	skb->dev = (void *) bfusb;

	scb = (struct bfusb_scb *) skb->cb;
	scb->urb = urb;

	pipe = usb_rcvbulkpipe(bfusb->udev, bfusb->bulk_in_ep);

	usb_fill_bulk_urb(urb, bfusb->udev, pipe, skb->data, size,
	bfusb_rx_complete, skb);

	skb_queue_tail(&bfusb->pending_q, skb);

	err = usb_submit_urb(urb, GFP_ATOMIC);
	if (err) {
	BT_ERR("%s bulk rx submit failed urb %p err %d",
	bfusb->hdev->name, urb, err);
	skb_unlink(skb, &bfusb->pending_q);
	kfree_skb(skb);
	usb_free_urb(urb);
	}

	return err;
	}

	static inline int bfusb_recv_block(struct bfusb bfusb, int hdr, unsigned char data, int len)
	{
	BT_DBG("bfusb %p hdr 0x%02x data %p len %d", bfusb, hdr, data, len);

	if (hdr & 0x10) {
	BT_ERR("%s error in block", bfusb->hdev->name);
	if (bfusb->reassembly)
	kfree_skb(bfusb->reassembly);
	bfusb->reassembly = NULL;
	return -EIO;
	}

	if (hdr & 0x04) {
	struct sk_buff *skb;
	unsigned char pkt_type;
	int pkt_len = 0;

	if (bfusb->reassembly) {
	BT_ERR("%s unexpected start block", bfusb->hdev->name);
	kfree_skb(bfusb->reassembly);
	bfusb->reassembly = NULL;
	}

	if (len < 1) {
	BT_ERR("%s no packet type found", bfusb->hdev->name);
	return -EPROTO;
	}

	pkt_type = *data++; len--;

	switch (pkt_type) {
	case HCI_EVENT_PKT:
	if (len >= HCI_EVENT_HDR_SIZE) {
	struct hci_event_hdr hdr = (struct hci_event_hdr ) data;
	pkt_len = HCI_EVENT_HDR_SIZE + hdr->plen;
	} else {
	BT_ERR("%s event block is too short", bfusb->hdev->name);
	return -EILSEQ;
	}
	break;

	case HCI_ACLDATA_PKT:
	if (len >= HCI_ACL_HDR_SIZE) {
	struct hci_acl_hdr hdr = (struct hci_acl_hdr ) data;
	pkt_len = HCI_ACL_HDR_SIZE + __le16_to_cpu(hdr->dlen);
	} else {
	BT_ERR("%s data block is too short", bfusb->hdev->name);
	return -EILSEQ;
	}
	break;

	case HCI_SCODATA_PKT:
	if (len >= HCI_SCO_HDR_SIZE) {
	struct hci_sco_hdr hdr = (struct hci_sco_hdr ) data;
	pkt_len = HCI_SCO_HDR_SIZE + hdr->dlen;
	} else {
	BT_ERR("%s audio block is too short", bfusb->hdev->name);
	return -EILSEQ;
	}
	break;
	}

	skb = bt_skb_alloc(pkt_len, GFP_ATOMIC);
	if (!skb) {
	BT_ERR("%s no memory for the packet", bfusb->hdev->name);
	return -ENOMEM;
	}

	skb->dev = (void *) bfusb->hdev;
	skb->pkt_type = pkt_type;

	bfusb->reassembly = skb;
	} else {
	if (!bfusb->reassembly) {
	BT_ERR("%s unexpected continuation block", bfusb->hdev->name);
	return -EIO;
	}
	}

	if (len > 0)
	memcpy(skb_put(bfusb->reassembly, len), data, len);

	if (hdr & 0x08) {
	hci_recv_frame(bfusb->reassembly);
	bfusb->reassembly = NULL;
	}

	return 0;
	}

	static void bfusb_rx_complete(struct urb urb, struct pt_regs regs)
	{
	struct sk_buff skb = (struct sk_buff ) urb->context;
	struct bfusb bfusb = (struct bfusb ) skb->dev;
	unsigned char *buf = urb->transfer_buffer;
	int count = urb->actual_length;
	int err, hdr, len;

	BT_DBG("bfusb %p urb %p skb %p len %d", bfusb, urb, skb, skb->len);

	read_lock(&bfusb->lock);

	if (!test_bit(HCI_RUNNING, &bfusb->hdev->flags))
	goto unlock;

	if (urb->status \|\| !count)
	goto resubmit;

	bfusb->hdev->stat.byte_rx += count;

	skb_put(skb, count);

	while (count) {
	hdr = buf[0] \| (buf[1] << 8);

	if (hdr & 0x4000) {
	len = 0;
	count -= 2;
	buf += 2;
	} else {
	len = (buf[2] == 0) ? 256 : buf[2];
	count -= 3;
	buf += 3;
	}

	if (count < len) {
	BT_ERR("%s block extends over URB buffer ranges",
	bfusb->hdev->name);
	}

	if ((hdr & 0xe1) == 0xc1)
	bfusb_recv_block(bfusb, hdr, buf, len);

	count -= len;
	buf += len;
	}

	skb_unlink(skb, &bfusb->pending_q);
	kfree_skb(skb);

	bfusb_rx_submit(bfusb, urb);

	read_unlock(&bfusb->lock);

	return;

	resubmit:
	urb->dev = bfusb->udev;

	err = usb_submit_urb(urb, GFP_ATOMIC);
	if (err) {
	BT_ERR("%s bulk resubmit failed urb %p err %d",
	bfusb->hdev->name, urb, err);
	}

	unlock:
	read_unlock(&bfusb->lock);
	}


	static int bfusb_open(struct hci_dev *hdev)
	{
	struct bfusb bfusb = (struct bfusb ) hdev->driver_data;
	unsigned long flags;
	int i, err;

	BT_DBG("hdev %p bfusb %p", hdev, bfusb);

	if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
	return 0;

	write_lock_irqsave(&bfusb->lock, flags);

	err = bfusb_rx_submit(bfusb, NULL);
	if (!err) {
	for (i = 1; i < BFUSB_MAX_BULK_RX; i++)
	bfusb_rx_submit(bfusb, NULL);
	} else {
	clear_bit(HCI_RUNNING, &hdev->flags);
	}

	write_unlock_irqrestore(&bfusb->lock, flags);

	return err;
	}

	static int bfusb_flush(struct hci_dev *hdev)
	{
	struct bfusb bfusb = (struct bfusb ) hdev->driver_data;

	BT_DBG("hdev %p bfusb %p", hdev, bfusb);

	skb_queue_purge(&bfusb->transmit_q);

	return 0;
	}

	static int bfusb_close(struct hci_dev *hdev)
	{
	struct bfusb bfusb = (struct bfusb ) hdev->driver_data;
	unsigned long flags;

	BT_DBG("hdev %p bfusb %p", hdev, bfusb);

	if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
	return 0;

	write_lock_irqsave(&bfusb->lock, flags);
	write_unlock_irqrestore(&bfusb->lock, flags);

	bfusb_unlink_urbs(bfusb);
	bfusb_flush(hdev);

	return 0;
	}

	static int bfusb_send_frame(struct sk_buff *skb)
	{
	struct hci_dev hdev = (struct hci_dev ) skb->dev;
	struct bfusb *bfusb;
	struct sk_buff *nskb;
	unsigned char buf[3];
	int sent = 0, size, count;

	BT_DBG("hdev %p skb %p type %d len %d", hdev, skb, skb->pkt_type, skb->len);

	if (!hdev) {
	BT_ERR("Frame for unknown HCI device (hdev=NULL)");
	return -ENODEV;
	}

	if (!test_bit(HCI_RUNNING, &hdev->flags))
	return -EBUSY;

	bfusb = (struct bfusb *) hdev->driver_data;

	switch (skb->pkt_type) {
	case HCI_COMMAND_PKT:
	hdev->stat.cmd_tx++;
	break;
	case HCI_ACLDATA_PKT:
	hdev->stat.acl_tx++;
	break;
	case HCI_SCODATA_PKT:
	hdev->stat.sco_tx++;
	break;
	};

	/* Prepend skb with frame type */
	memcpy(skb_push(skb, 1), &(skb->pkt_type), 1);

	count = skb->len;

	/* Max HCI frame size seems to be 1511 + 1 */
	if (!(nskb = bt_skb_alloc(count + 32, GFP_ATOMIC))) {
	BT_ERR("Can't allocate memory for new packet");
	return -ENOMEM;
	}

	nskb->dev = (void *) bfusb;

	while (count) {
	size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE);

	buf[0] = 0xc1 \| ((sent == 0) ? 0x04 : 0) \| ((count == size) ? 0x08 : 0);
	buf[1] = 0x00;
	buf[2] = (size == BFUSB_MAX_BLOCK_SIZE) ? 0 : size;

	memcpy(skb_put(nskb, 3), buf, 3);
	memcpy(skb_put(nskb, size), skb->data + sent, size);

	sent += size;
	count -= size;
	}

	/* Don't send frame with multiple size of bulk max packet */
	if ((nskb->len % bfusb->bulk_pkt_size) == 0) {
	buf[0] = 0xdd;
	buf[1] = 0x00;
	memcpy(skb_put(nskb, 2), buf, 2);
	}

	read_lock(&bfusb->lock);

	skb_queue_tail(&bfusb->transmit_q, nskb);
	bfusb_tx_wakeup(bfusb);

	read_unlock(&bfusb->lock);

	kfree_skb(skb);

	return 0;
	}

	static void bfusb_destruct(struct hci_dev *hdev)
	{
	struct bfusb bfusb = (struct bfusb ) hdev->driver_data;

	BT_DBG("hdev %p bfusb %p", hdev, bfusb);

	kfree(bfusb);
	}

	static int bfusb_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
	{
	return -ENOIOCTLCMD;
	}


	static int bfusb_load_firmware(struct bfusb bfusb, unsigned char firmware, int count)
	{
	unsigned char *buf;
	int err, pipe, len, size, sent = 0;

	BT_DBG("bfusb %p udev %p", bfusb, bfusb->udev);

	BT_INFO("BlueFRITZ! USB loading firmware");

	pipe = usb_sndctrlpipe(bfusb->udev, 0);

	if (usb_control_msg(bfusb->udev, pipe, USB_REQ_SET_CONFIGURATION,
	0, 1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT) < 0) {
	BT_ERR("Can't change to loading configuration");
	return -EBUSY;
	}

	bfusb->udev->toggle[0] = bfusb->udev->toggle[1] = 0;

	buf = kmalloc(BFUSB_MAX_BLOCK_SIZE + 3, GFP_ATOMIC);
	if (!buf) {
	BT_ERR("Can't allocate memory chunk for firmware");
	return -ENOMEM;
	}

	pipe = usb_sndbulkpipe(bfusb->udev, bfusb->bulk_out_ep);

	while (count) {
	size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE + 3);

	memcpy(buf, firmware + sent, size);

	err = usb_bulk_msg(bfusb->udev, pipe, buf, size,
	&len, BFUSB_BLOCK_TIMEOUT);

	if (err \|\| (len != size)) {
	BT_ERR("Error in firmware loading");
	goto error;
	}

	sent += size;
	count -= size;
	}

	if ((err = usb_bulk_msg(bfusb->udev, pipe, NULL, 0,
	&len, BFUSB_BLOCK_TIMEOUT)) < 0) {
	BT_ERR("Error in null packet request");
	goto error;
	}

	pipe = usb_sndctrlpipe(bfusb->udev, 0);

	if ((err = usb_control_msg(bfusb->udev, pipe, USB_REQ_SET_CONFIGURATION,
	0, 2, 0, NULL, 0, USB_CTRL_SET_TIMEOUT)) < 0) {
	BT_ERR("Can't change to running configuration");
	goto error;
	}

	bfusb->udev->toggle[0] = bfusb->udev->toggle[1] = 0;

	BT_INFO("BlueFRITZ! USB device ready");

	kfree(buf);
	return 0;

	error:
	kfree(buf);

	pipe = usb_sndctrlpipe(bfusb->udev, 0);

	usb_control_msg(bfusb->udev, pipe, USB_REQ_SET_CONFIGURATION,
	0, 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);

	return err;
	}

	static int bfusb_probe(struct usb_interface intf, const struct usb_device_id id)
	{
	const struct firmware *firmware;
	struct usb_device *udev = interface_to_usbdev(intf);
	struct usb_host_endpoint *bulk_out_ep;
	struct usb_host_endpoint *bulk_in_ep;
	struct hci_dev *hdev;
	struct bfusb *bfusb;

	BT_DBG("intf %p id %p", intf, id);

	if (ignore)
	return -ENODEV;

	/* Check number of endpoints */
	if (intf->cur_altsetting->desc.bNumEndpoints < 2)
	return -EIO;

	bulk_out_ep = &intf->cur_altsetting->endpoint[0];
	bulk_in_ep = &intf->cur_altsetting->endpoint[1];

	if (!bulk_out_ep \|\| !bulk_in_ep) {
	BT_ERR("Bulk endpoints not found");
	goto done;
	}

	/* Initialize control structure and load firmware */
	if (!(bfusb = kmalloc(sizeof(struct bfusb), GFP_KERNEL))) {
	BT_ERR("Can't allocate memory for control structure");
	goto done;
	}

	memset(bfusb, 0, sizeof(struct bfusb));

	bfusb->udev = udev;
	bfusb->bulk_in_ep = bulk_in_ep->desc.bEndpointAddress;
	bfusb->bulk_out_ep = bulk_out_ep->desc.bEndpointAddress;
	bfusb->bulk_pkt_size = le16_to_cpu(bulk_out_ep->desc.wMaxPacketSize);

	rwlock_init(&bfusb->lock);

	bfusb->reassembly = NULL;

	skb_queue_head_init(&bfusb->transmit_q);
	skb_queue_head_init(&bfusb->pending_q);
	skb_queue_head_init(&bfusb->completed_q);

	if (request_firmware(&firmware, "bfubase.frm", &udev->dev) < 0) {
	BT_ERR("Firmware request failed");
	goto error;
	}

	BT_DBG("firmware data %p size %d", firmware->data, firmware->size);

	if (bfusb_load_firmware(bfusb, firmware->data, firmware->size) < 0) {
	BT_ERR("Firmware loading failed");
	goto release;
	}

	release_firmware(firmware);

	/* Initialize and register HCI device */
	hdev = hci_alloc_dev();
	if (!hdev) {
	BT_ERR("Can't allocate HCI device");
	goto error;
	}

	bfusb->hdev = hdev;

	hdev->type = HCI_USB;
	hdev->driver_data = bfusb;
	SET_HCIDEV_DEV(hdev, &intf->dev);

	hdev->open = bfusb_open;
	hdev->close = bfusb_close;
	hdev->flush = bfusb_flush;
	hdev->send = bfusb_send_frame;
	hdev->destruct = bfusb_destruct;
	hdev->ioctl = bfusb_ioctl;

	hdev->owner = THIS_MODULE;

	if (hci_register_dev(hdev) < 0) {
	BT_ERR("Can't register HCI device");
	hci_free_dev(hdev);
	goto error;
	}

	usb_set_intfdata(intf, bfusb);

	return 0;

	release:
	release_firmware(firmware);

	error:
	kfree(bfusb);

	done:
	return -EIO;
	}

	static void bfusb_disconnect(struct usb_interface *intf)
	{
	struct bfusb *bfusb = usb_get_intfdata(intf);
	struct hci_dev *hdev = bfusb->hdev;

	BT_DBG("intf %p", intf);

	if (!hdev)
	return;

	usb_set_intfdata(intf, NULL);

	bfusb_close(hdev);

	if (hci_unregister_dev(hdev) < 0)
	BT_ERR("Can't unregister HCI device %s", hdev->name);

	hci_free_dev(hdev);
	}

	static struct usb_driver bfusb_driver = {
	.owner = THIS_MODULE,
	.name = "bfusb",
	.probe = bfusb_probe,
	.disconnect = bfusb_disconnect,
	.id_table = bfusb_table,
	};

	static int __init bfusb_init(void)
	{
	int err;

	BT_INFO("BlueFRITZ! USB driver ver %s", VERSION);

	if ((err = usb_register(&bfusb_driver)) < 0)
	BT_ERR("Failed to register BlueFRITZ! USB driver");

	return err;
	}

	static void __exit bfusb_exit(void)
	{
	usb_deregister(&bfusb_driver);
	}

	module_init(bfusb_init);
	module_exit(bfusb_exit);

	module_param(ignore, bool, 0644);
	MODULE_PARM_DESC(ignore, "Ignore devices from the matching table");

	MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
	MODULE_DESCRIPTION("BlueFRITZ! USB driver ver " VERSION);
	MODULE_VERSION(VERSION);
	MODULE_LICENSE("GPL");