Hi,
Here is a driver that supports the Keyspan Digital Media Remote. My
company is planning on using this remote in our system and as such we
requested the development documentation from Innosys. They have
provided us with the necessary docs and allowed us to release this
driver to the Linux kernel under the GPL v2.
I created the patch for this driver against the vanilla 2.6.12
sources so I hope that will be sufficient. This is my first Linux USB
driver that I have created so any suggestions on improvement would be
appreciated. I based most of the design for this driver against the
usb-skeleton.c and ati_remote.c code. The driver is only a basic key
input driver as that is all we need for our product. I also only have a
17 button version of the remote so all testing has been done against the
17 button version. The 15 button version should also be fairly well
supported as the mapping is quite close. Also the version of the remote
is a UIA-11 which doesn't require a programming download to work. There
is a UIA-10 version which is an older version which does.
Enjoy,
Michael Downey
Signed-off-by: [EMAIL PROTECTED]
I'm using Thunderbird and can't figure out how to inline attachments so
I'm pasting it here:
diff -uprN -X dontdiff linux-2.6.12/drivers/usb/input/Kconfig
linux-2.6.12-md/drivers/usb/input/Kconfig
--- linux-2.6.12/drivers/usb/input/Kconfig 2005-06-22
11:11:52.000000000 -0600
+++ linux-2.6.12-md/drivers/usb/input/Kconfig 2005-06-22
13:28:18.000000000 -0600
@@ -235,3 +235,16 @@ config USB_ATI_REMOTE
To compile this driver as a module, choose M here: the module
will be
called ati_remote.
+config USB_KEYSPAN_REMOTE
+ tristate "Keyspan DMR USB remote control (EXPERIMENTAL)"
+ depends on USB && INPUT && EXPERIMENTAL
+ ---help---
+ Say Y here if you want to use a Keyspan DMR USB remote control.
+ Currently only the UIA-11 type of receiver has been tested.
The tag
+ on the receiver that connects to the USB port should have a
P/N that
+ will tell you what type of DMR you have. The UIA-10 type is not
+ supported at this time. This driver maps all buttons to keypress
+ events.
+
+ To compile this driver as a module, choose M here: the module will
+ be called keyspan_remote.
diff -uprN -X dontdiff linux-2.6.12/drivers/usb/input/Makefile
linux-2.6.12-md/drivers/usb/input/Makefile
--- linux-2.6.12/drivers/usb/input/Makefile 2005-06-22
11:11:52.000000000 -0600
+++ linux-2.6.12-md/drivers/usb/input/Makefile 2005-06-22
13:25:30.000000000 -0600
@@ -31,6 +31,7 @@ obj-$(CONFIG_USB_ATI_REMOTE) += ati_remo
obj-$(CONFIG_USB_HID) += usbhid.o
obj-$(CONFIG_USB_KBD) += usbkbd.o
obj-$(CONFIG_USB_KBTAB) += kbtab.o
+obj-$(CONFIG_USB_KEYSPAN_REMOTE) += keyspan_remote.o
obj-$(CONFIG_USB_MOUSE) += usbmouse.o
obj-$(CONFIG_USB_MTOUCH) += mtouchusb.o
obj-$(CONFIG_USB_EGALAX) += touchkitusb.o
diff -uprN -X dontdiff linux-2.6.12/drivers/usb/input/keyspan_remote.c
linux-2.6.12-md/drivers/usb/input/keyspan_remote.c
--- linux-2.6.12/drivers/usb/input/keyspan_remote.c 1969-12-31
17:00:00.000000000 -0700
+++ linux-2.6.12-md/drivers/usb/input/keyspan_remote.c 2005-06-22
16:05:17.000000000 -0600
@@ -0,0 +1,654 @@
+/*
+ * keyspan_remote: USB driver for the Keyspan DMR
+ *
+ * Copyright (C) 2005 Zymeta Corporation - Michael Downey
([EMAIL PROTECTED])
+ *
+ * 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, version 2.
+ *
+ * This driver has been put together with the support of Innosys, Inc.
+ * and Keyspan, Inc the manufacturers of the Keyspan USB DMR product.
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/input.h>
+#include <linux/usb.h>
+
+#define DRIVER_VERSION "v0.1"
+#define DRIVER_AUTHOR "Michael Downey <[EMAIL PROTECTED]>"
+#define DRIVER_DESC "Driver for the USB Keyspan remote control."
+#define DRIVER_LICENSE "GPL"
+
+/* Parameters that can be passed to the driver. */
+static int debug = 0;
+module_param(debug, int, 0444);
+MODULE_PARM_DESC(debug, "Enable extra debug messages and information");
+
+/* Use our own dbg macro */
+#define dprintk(fmt, args...) \
+ do { \
+ if(debug) printk(KERN_DEBUG __FILE__ ": " \
+ fmt, ## args); \
+ } while(0)
+
+/* Define these values to match your devices */
+#define USB_KEYSPAN_VENDOR_ID 0x06CD
+#define USB_KEYSPAN_PRODUCT_UIA11 0x0202
+
+/* Defines for converting the data from the remote. */
+#define ZERO 0x18
+#define ZERO_MASK 0x1F /* 5 bits for a 0 */
+#define ONE 0x3C
+#define ONE_MASK 0x3F /* 6 bits for a 1 */
+#define SYNC 0x3F80
+#define SYNC_MASK 0x3FFF /* 14 bits for a SYNC sequence */
+#define STOP 0x00
+#define STOP_MASK 0x1F /* 5 bits for the STOP sequence */
+#define GAP 0xFF
+
+#define RECV_SIZE 8 /* The UIA-11 type have a 8 byte limit. */
+
+/* table of devices that work with this driver */
+static struct usb_device_id keyspan_table[] = {
+ { USB_DEVICE(USB_KEYSPAN_VENDOR_ID, USB_KEYSPAN_PRODUCT_UIA11) },
+ { } /* Terminating entry */
+};
+
+/* Structure to store all the real stuff that a remote sends to us. */
+struct keyspan_message {
+ unsigned short system;
+ unsigned char button;
+ unsigned char toggle;
+};
+
+/* Structure used for all the bit testing magic needed to be done. */
+struct bit_tester {
+ unsigned int tester;
+ int len;
+ int pos;
+ int bits_left;
+ unsigned char buffer[32];
+};
+
+/* Structure to hold all of our driver specific stuff */
+struct usb_keyspan {
+ char name[128];
+ char phys[64];
+ struct usb_device* udev;
+ struct input_dev input;
+ struct usb_interface* interface;
+ struct usb_endpoint_descriptor* in_endpoint;
+ struct urb* irq_urb;
+ int open;
+ dma_addr_t in_dma;
+ unsigned char* in_buffer;
+
+ /* variables used to parse messages from remote. */
+ struct bit_tester data;
+ int stage;
+};
+
+/*
+ * Table that maps the 31 possible keycodes to input keys.
+ * Currently there are 15 and 17 button models so RESERVED codes
+ * are blank areas in the mapping.
+ */
+static int keyspan_key_table[] = {
+ KEY_RESERVED, /* 0 is just a place holder. */
+ KEY_RESERVED,
+ KEY_STOP,
+ KEY_PLAYCD,
+ KEY_RESERVED,
+ KEY_PREVIOUSSONG,
+ KEY_REWIND,
+ KEY_FORWARD,
+ KEY_NEXTSONG,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_PAUSE,
+ KEY_VOLUMEUP,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_VOLUMEDOWN,
+ KEY_RESERVED,
+ KEY_UP,
+ KEY_RESERVED,
+ KEY_MUTE,
+ KEY_LEFT,
+ KEY_ENTER,
+ KEY_RIGHT,
+ KEY_RESERVED,
+ KEY_RESERVED,
+ KEY_DOWN,
+ KEY_RESERVED,
+ KEY_KPASTERISK,
+ KEY_RESERVED,
+ KEY_MENU
+};
+
+/* Toggle should change each time a button is fully pressed and
released. */
+static int toggle = -1;
+
+static struct usb_driver keyspan_driver;
+
+/*
+ * Debug routine that prints out what we've received from the remote.
+ */
+static void keyspan_print(unsigned char* data)
+{
+ char codes[32];
+ int i;
+
+ for (i = 0; i < RECV_SIZE; i++) {
+ snprintf(codes+i*3, 4, "%02x ", data[i]);
+ }
+
+ dprintk("%s\n", codes);
+}
+
+/*
+ * Routine that manages the bit_tester structure. It makes sure that
there are
+ * at least bits_needed bits loaded into the tester.
+ */
+static int keyspan_load_tester(struct usb_keyspan* dev, int bits_needed)
+{
+ if (dev->data.bits_left >= bits_needed)
+ return(0);
+
+ /*
+ * Somehow we've missed the last message. The message will be
repeated
+ * though so it's not too big a deal
+ */
+ if (dev->data.pos >= dev->data.len) {
+ dprintk("%s - Error ran out of data. pos: %d, len: %d\n",
+ __FUNCTION__, dev->data.pos, dev->data.len);
+ return(-1);
+ }
+
+ /* Load as much as we can into the tester. */
+ while ((dev->data.bits_left + 7 < (sizeof(dev->data.tester) * 8)) &&
+ (dev->data.pos < dev->data.len)) {
+ dev->data.tester += (dev->data.buffer[dev->data.pos++]
<< dev->data.bits_left);
+ dev->data.bits_left += 8;
+ }
+
+ return(0);
+}
+
+/*
+ * Routine that handles all the logic needed to parse out the message
from the remote.
+ */
+static void keyspan_check_data(struct usb_keyspan *remote, struct
pt_regs *regs)
+{
+ int i;
+ int found = 0;
+ struct keyspan_message message;
+
+ switch(remote->stage) {
+ case 0:
+ /*
+ * In stage 0 we want to find the start of a message.
The remote sends a 0xFF as filler.
+ * So the first byte that isn't a FF should be the start
of a new message.
+ */
+ for (i = 0; i < RECV_SIZE && remote->in_buffer[i] ==
GAP; ++i);
+
+ if (i < RECV_SIZE) {
+ memcpy(remote->data.buffer, remote->in_buffer,
RECV_SIZE);
+ remote->data.len = RECV_SIZE;
+ remote->data.pos = 0;
+ remote->data.tester = 0;
+ remote->data.bits_left = 0;
+ remote->stage = 1;
+ }
+ break;
+
+ case 1:
+ /*
+ * Stage 1 we should have 16 bytes and should be able to
detect a
+ * SYNC. The SYNC is 14 bits, 7 0's and then 7 1's.
+ * SYNC. The SYNC is 14 bits, 7 0's and then 7 1's.
+ */
+ memcpy(remote->data.buffer + remote->data.len,
remote->in_buffer, RECV_SIZE);
+ remote->data.len += RECV_SIZE;
+
+ found = 0;
+ while ((remote->data.bits_left >= 14 || remote->data.pos
< remote->data.len) && !found) {
+ for (i = 0; i < 8; ++i) {
+ if (keyspan_load_tester(remote, 14) != 0) {
+ remote->stage = 0;
+ return;
+ }
+
+ if ((remote->data.tester & SYNC_MASK) ==
SYNC) {
+ remote->data.tester =
remote->data.tester >> 14;
+ remote->data.bits_left -= 14;
+ found = 1;
+ break;
+ }
+ else {
+ remote->data.tester =
remote->data.tester >> 1;
+ --remote->data.bits_left;
+ }
+ }
+ }
+
+ if (!found) {
+ remote->stage = 0;
+ remote->data.len = 0;
+ }
+
+ else {
+ remote->stage = 2;
+ }
+ break;
+
+ case 2:
+ /*
+ * Stage 2 we should have 24 bytes which will be enough
for a full
+ * message. We need to parse out the system code,
button code,
+ * toggle code, and stop.
+ */
+ memcpy(remote->data.buffer + remote->data.len,
remote->in_buffer, RECV_SIZE);
+ remote->data.len += RECV_SIZE;
+
+ message.system = 0;
+ for (i = 0; i < 9; i++) {
+ keyspan_load_tester(remote, 6);
+
+ if ((remote->data.tester & ZERO_MASK) == ZERO) {
+ message.system = message.system << 1;
+ remote->data.tester =
remote->data.tester >> 5;
+ remote->data.bits_left -= 5;
+ }
+
+ else if ((remote->data.tester & ONE_MASK) == ONE) {
+ message.system = (message.system << 1) + 1;
+ remote->data.tester =
remote->data.tester >> 6;
+ remote->data.bits_left -= 6;
+ }
+
+ else {
+ err("%s - Unknown sequence found in
system data.\n", __FUNCTION__);
+ remote->stage = 0;
+ return;
+ }
+ }
+
+ message.button = 0;
+ for (i = 0; i < 5; i++) {
+ keyspan_load_tester(remote, 6);
+
+ if ((remote->data.tester & ZERO_MASK) == ZERO) {
+ message.button = message.button << 1;
+ remote->data.tester =
remote->data.tester >> 5;
+ remote->data.bits_left -= 5;
+ }
+
+ else if ((remote->data.tester & ONE_MASK) == ONE) {
+ message.button = (message.button << 1) + 1;
+ remote->data.tester =
remote->data.tester >> 6;
+ remote->data.bits_left -= 6;
+ }
+
+ else {
+ err("%s - Unknown sequence found in
button data.\n", __FUNCTION__);
+ remote->stage = 0;
+ return;
+ }
+ }
+
+ keyspan_load_tester(remote, 6);
+ if ((remote->data.tester & ZERO_MASK) == ZERO) {
+ message.toggle = 0;
+ remote->data.tester = remote->data.tester >> 5;
+ remote->data.bits_left -= 5;
+ }
+
+ else if ((remote->data.tester & ONE_MASK) == ONE) {
+ message.toggle = 1;
+ remote->data.tester = remote->data.tester >> 6;
+ remote->data.bits_left -= 6;
+ }
+
+ else {
+ err("%s - Error in message, invalid toggle.\n",
__FUNCTION__);
+ }
+
+ keyspan_load_tester(remote, 5);
+ if ((remote->data.tester & STOP_MASK) == STOP) {
+ remote->data.tester = remote->data.tester >> 5;
+ remote->data.bits_left -= 5;
+ }
+
+ else {
+ err("Bad message recieved, no stop bit found.\n");
+ }
+
+ dprintk("%s found valid message: system: %d, button: %d,
toggle: %d\n",
+ __FUNCTION__, message.system, message.button,
message.toggle);
+
+ if (message.toggle != toggle) {
+ input_regs(&remote->input, regs);
+ input_report_key(&remote->input,
keyspan_key_table[message.button], 1);
+ input_report_key(&remote->input,
keyspan_key_table[message.button], 0);
+ input_sync(&remote->input);
+ toggle = message.toggle;
+ }
+
+ remote->stage = 0;
+ break;
+ }
+}
+
+/*
+ * Routine for sending all the initialization messages to the remote.
+ */
+static int keyspan_setup(struct usb_device* dev)
+{
+ int retval = 0;
+
+ retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+ 0x11, 0x40, 0x5601, 0x0, NULL, 0, 0);
+ if (retval) {
+ dprintk("%s - failed to set bit rate due to error:
%d\n", __FUNCTION__, retval);
+ return(retval);
+ }
+
+ retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+ 0x44, 0x40, 0x0, 0x0, NULL, 0, 0);
+ if (retval) {
+ dprintk("%s - failed to set resume sensitivity due to
error: %d\n", __FUNCTION__, retval);
+ return(retval);
+ }
+
+ retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+ 0x22, 0x40, 0x0, 0x0, NULL, 0, 0);
+ if (retval) {
+ dprintk("%s - failed to turn receive on due to error:
%d\n", __FUNCTION__, retval);
+ return(retval);
+ }
+
+ dprintk("%s - Setup complete.\n", __FUNCTION__);
+ return(retval);
+}
+
+/*
+ * Routine used to handle a new message that has come in.
+ */
+static void keyspan_irq_recv(struct urb *urb, struct pt_regs *regs)
+{
+ struct usb_keyspan *dev = urb->context;
+ int retval;
+
+ /* Check our status in case we need to bail out early. */
+ switch (urb->status) {
+ case 0:
+ break;
+
+ /* Device went away so don't keep trying to read from it. */
+ case -ECONNRESET:
+ case -ENOENT:
+ case -ESHUTDOWN:
+ return;
+
+ default:
+ goto resubmit;
+ break;
+ }
+
+ if (debug)
+ keyspan_print(dev->in_buffer);
+
+ keyspan_check_data(dev, regs);
+
+resubmit:
+ retval = usb_submit_urb(urb, GFP_ATOMIC);
+ if (retval)
+ err ("%s - usb_submit_urb failed with result: %d",
__FUNCTION__, retval);
+}
+
+static int keyspan_open(struct input_dev *dev)
+{
+ struct usb_keyspan *remote = dev->private;
+
+ if (remote->open++)
+ return 0;
+
+ remote->irq_urb->dev = remote->udev;
+ if (usb_submit_urb(remote->irq_urb, GFP_KERNEL)) {
+ remote->open--;
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static void keyspan_close(struct input_dev *dev)
+{
+ struct usb_keyspan *remote = dev->private;
+
+ if (!--remote->open)
+ usb_kill_urb(remote->irq_urb);
+}
+
+/*
+ * Routine that sets up the driver to handle a specific USB device
detected on the bus.
+ */
+static int keyspan_probe(struct usb_interface *interface, const struct
usb_device_id *id)
+{
+ int i;
+ int retval = -ENOMEM;
+ char path[64];
+ char *buf;
+ struct usb_keyspan *remote = NULL;
+ struct usb_host_interface *iface_desc;
+ struct usb_endpoint_descriptor *endpoint;
+ struct usb_device *udev =
usb_get_dev(interface_to_usbdev(interface));
+
+ /* See if the offered device matches what we can accept */
+ if ((udev->descriptor.idVendor != USB_KEYSPAN_VENDOR_ID) ||
+ (udev->descriptor.idProduct != USB_KEYSPAN_PRODUCT_UIA11) )
+ return -ENODEV;
+
+ /* allocate memory for our device state and initialize it */
+ remote = kmalloc(sizeof(*remote), GFP_KERNEL);
+ if (remote == NULL) {
+ err("Out of memory\n");
+ goto error;
+ }
+ memset(remote, 0x00, sizeof(*remote));
+
+ remote->udev = udev;
+ remote->interface = interface;
+
+ /* set up the endpoint information */
+ /* use only the first in interrupt endpoint */
+ iface_desc = interface->cur_altsetting;
+ for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
+ endpoint = &iface_desc->endpoint[i].desc;
+
+ if (!remote->in_endpoint &&
+ (endpoint->bEndpointAddress & USB_DIR_IN) &&
+ ((endpoint->bmAttributes &
USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)) {
+ /* we found our interrupt in endpoint */
+ remote->in_endpoint = endpoint;
+
+ remote->in_buffer =
usb_buffer_alloc(remote->udev, RECV_SIZE, SLAB_ATOMIC, &remote->in_dma);
+ if (!remote->in_buffer) {
+ retval = -ENOMEM;
+ goto error;
+ }
+ }
+ }
+
+ if (!remote->in_endpoint) {
+ err("Could not find interrupt input endpoint.\n");
+ retval = -ENODEV;
+ goto error;
+ }
+
+ remote->irq_urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!remote->irq_urb) {
+ err("Failed to allocate urb.\n");
+ retval = -ENOMEM;
+ goto error;
+ }
+
+ retval = keyspan_setup(remote->udev);
+ if (retval) {
+ err("Failed to setup device.\n");
+ retval = -ENODEV;
+ goto error;
+ }
+
+ /*
+ * Setup the input system with the bits we are going to be reporting
+ */
+ remote->input.evbit[0] = BIT(EV_KEY); /* We will only
report KEY events. */
+ for (i = 0; i < 32; ++i) {
+ if (keyspan_key_table[i] != KEY_RESERVED) {
+ set_bit(keyspan_key_table[i], remote->input.keybit);
+ }
+ }
+
+ remote->input.private = remote;
+ remote->input.open = keyspan_open;
+ remote->input.close = keyspan_close;
+
+ usb_make_path(remote->udev, path, 64);
+ sprintf(remote->phys, "%s/input0", path);
+
+ remote->input.name = remote->name;
+ remote->input.phys = remote->phys;
+ remote->input.id.bustype = BUS_USB;
+ remote->input.id.vendor = remote->udev->descriptor.idVendor;
+ remote->input.id.product = remote->udev->descriptor.idProduct;
+ remote->input.id.version = remote->udev->descriptor.bcdDevice;
+
+ if (!(buf = kmalloc(63, GFP_KERNEL))) {
+ usb_buffer_free(remote->udev, RECV_SIZE,
remote->in_buffer, remote->in_dma);
+ kfree(remote);
+ return -ENOMEM;
+ }
+
+ if (remote->udev->descriptor.iManufacturer &&
+ usb_string(remote->udev,
remote->udev->descriptor.iManufacturer, buf, 63) > 0)
+ strcat(remote->name, buf);
+
+ if (remote->udev->descriptor.iProduct &&
+ usb_string(remote->udev, remote->udev->descriptor.iProduct,
buf, 63) > 0)
+ sprintf(remote->name, "%s %s", remote->name, buf);
+
+ if (!strlen(remote->name))
+ sprintf(remote->name, "USB Keyspan Remote %04x:%04x",
+ remote->input.id.vendor, remote->input.id.product);
+
+ kfree(buf);
+
+ /*
+ * Initialize the URB to access the device. The urb gets sent to
the device in keyspan_open()
+ */
+ usb_fill_int_urb(remote->irq_urb,
+ remote->udev, usb_rcvintpipe(remote->udev,
remote->in_endpoint->bEndpointAddress),
+ remote->in_buffer, RECV_SIZE, keyspan_irq_recv,
remote,
+ remote->in_endpoint->bInterval);
+ remote->irq_urb->transfer_dma = remote->in_dma;
+ remote->irq_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+
+ /* we can register the device now, as it is ready */
+ input_register_device(&remote->input);
+
+ /* save our data pointer in this interface device */
+ usb_set_intfdata(interface, remote);
+
+ /* let the user know what node this device is now attached to */
+ info("connected: %s on %s", remote->name, path);
+ return 0;
+
+error:
+ /*
+ * In case of error we need to clean up any allocated buffers
+ */
+ if (remote->irq_urb)
+ usb_free_urb(remote->irq_urb);
+
+ if (remote->in_buffer)
+ usb_buffer_free(remote->udev, RECV_SIZE,
remote->in_buffer, remote->in_dma);
+
+ if (remote)
+ kfree(remote);
+
+ return retval;
+}
+
+/*
+ * Routine called when a device is disconnected from the USB.
+ */
+static void keyspan_disconnect(struct usb_interface *interface)
+{
+ struct usb_keyspan *remote;
+
+ /* prevent keyspan_open() from racing keyspan_disconnect() */
+ lock_kernel();
+
+ remote = usb_get_intfdata(interface);
+ usb_set_intfdata(interface, NULL);
+
+ if (remote) { /* We have a valid driver structure so clean up
everything we allocated. */
+ input_unregister_device(&remote->input);
+ usb_kill_urb(remote->irq_urb);
+ usb_free_urb(remote->irq_urb);
+ usb_buffer_free(interface_to_usbdev(interface),
RECV_SIZE, remote->in_buffer, remote->in_dma);
+ kfree(remote);
+ }
+
+ unlock_kernel();
+
+ info("USB Keyspan now disconnected");
+}
+
+/*
+ * Standard driver set up sections
+ */
+static struct usb_driver keyspan_driver =
+{
+ .owner = THIS_MODULE,
+ .name = "keyspan_remote",
+ .probe = keyspan_probe,
+ .disconnect = keyspan_disconnect,
+ .id_table = keyspan_table
+};
+
+static int __init usb_keyspan_init(void)
+{
+ int result;
+
+ /* register this driver with the USB subsystem */
+ result = usb_register(&keyspan_driver);
+ if (result)
+ err("usb_register failed. Error number %d\n", result);
+
+ return result;
+}
+
+static void __exit usb_keyspan_exit(void)
+{
+ /* deregister this driver with the USB subsystem */
+ usb_deregister(&keyspan_driver);
+}
+
+module_init(usb_keyspan_init);
+module_exit(usb_keyspan_exit);
+
+MODULE_DEVICE_TABLE(usb, keyspan_table);
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE(DRIVER_LICENSE);
-------------------------------------------------------
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