drivers/net/irda/kingsun-sir.c

   1 /*****************************************************************************
   2 *
   3 * Filename:      kingsun-sir.c
   4 * Version:       0.1.1
   5 * Description:   Irda KingSun/DonShine USB Dongle
   6 * Status:        Experimental
   7 * Author:        Alex Villacís Lasso <a_villacis@palosanto.com>
   8 *
   9 *       Based on stir4200 and mcs7780 drivers, with (strange?) differences
  10 *
  11 *       This program is free software; you can redistribute it and/or modify
  12 *       it under the terms of the GNU General Public License as published by
  13 *       the Free Software Foundation; either version 2 of the License.
  14 *
  15 *       This program is distributed in the hope that it will be useful,
  16 *       but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 *       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 *       GNU General Public License for more details.
  19 *
  20 *       You should have received a copy of the GNU General Public License
  21 *       along with this program; if not, write to the Free Software
  22 *       Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23 *
  24 *****************************************************************************/
  25
  26 /*
  27  * This is my current (2007-04-25) understanding of how this dongle is supposed
  28  * to work. This is based on reverse-engineering and examination of the packet
  29  * data sent and received by the WinXP driver using USBSnoopy. Feel free to
  30  * update here as more of this dongle is known:
  31  *
  32  * General: Unlike the other USB IrDA dongles, this particular dongle exposes,
  33  * not two bulk (in and out) endpoints, but two *interrupt* ones. This dongle,
  34  * like the bulk based ones (stir4200.c and mcs7780.c), requires polling in
  35  * order to receive data.
  36  * Transmission: Just like stir4200, this dongle uses a raw stream of data,
  37  * which needs to be wrapped and escaped in a similar way as in stir4200.c.
  38  * Reception: Poll-based, as in stir4200. Each read returns the contents of a
  39  * 8-byte buffer, of which the first byte (LSB) indicates the number of bytes
  40  * (1-7) of valid data contained within the remaining 7 bytes. For example, if
  41  * the buffer had the following contents:
  42  *  06 ff ff ff c0 01 04 aa
  43  * This means that (06) there are 6 bytes of valid data. The byte 0xaa at the
  44  * end is garbage (left over from a previous reception) and is discarded.
  45  * If a read returns an "impossible" value as the length of valid data (such as
  46  * 0x36) in the first byte, then the buffer is uninitialized (as is the case of
  47  * first plug-in) and its contents should be discarded. There is currently no
  48  * evidence that the top 5 bits of the 1st byte of the buffer can have values
  49  * other than 0 once reception begins.
  50  * Once valid bytes are collected, the assembled stream is a sequence of
  51  * wrapped IrDA frames that is unwrapped and unescaped as in stir4200.c.
  52  * BIG FAT WARNING: the dongle does *not* reset the RX buffer in any way after
  53  * a successful read from the host, which means that in absence of further
  54  * reception, repeated reads from the dongle will return the exact same
  55  * contents repeatedly. Attempts to be smart and cache a previous read seem
  56  * to result in corrupted packets, so this driver depends on the unwrap logic
  57  * to sort out any repeated reads.
  58  * Speed change: no commands observed so far to change speed, assumed fixed
  59  * 9600bps (SIR).
  60  */
  61
  62 #include <linux/module.h>
  63 #include <linux/moduleparam.h>
  64 #include <linux/kernel.h>
  65 #include <linux/types.h>
  66 #include <linux/errno.h>
  67 #include <linux/init.h>
  68 #include <linux/slab.h>
  69 #include <linux/usb.h>
  70 #include <linux/device.h>
  71 #include <linux/crc32.h>
  72
  73 #include <asm/unaligned.h>
  74 #include <asm/byteorder.h>
  75 #include <asm/uaccess.h>
  76
  77 #include <net/irda/irda.h>
  78 #include <net/irda/wrapper.h>
  79 #include <net/irda/crc.h>
  80
  81 /*
  82  * According to lsusb, 0x07c0 is assigned to
  83  * "Code Mercenaries Hard- und Software GmbH"
  84  */
  85 #define KING_VENDOR_ID 0x07c0
  86 #define KING_PRODUCT_ID 0x4200
  87
  88 /* These are the currently known USB ids */
  89 static struct usb_device_id dongles[] = {
  90     /* KingSun Co,Ltd  IrDA/USB Bridge */
  91     { USB_DEVICE(KING_VENDOR_ID, KING_PRODUCT_ID) },
  92     { }
  93 };
  94
  95 MODULE_DEVICE_TABLE(usb, dongles);
  96
  97 #define KINGSUN_MTT 0x07
  98
  99 #define KINGSUN_FIFO_SIZE               4096
 100 #define KINGSUN_EP_IN                   0
 101 #define KINGSUN_EP_OUT                  1
 102
 103 struct kingsun_cb {
 104         struct usb_device *usbdev;      /* init: probe_irda */
 105         struct net_device *netdev;      /* network layer */
 106         struct irlap_cb   *irlap;       /* The link layer we are binded to */
 107
 108         struct qos_info   qos;
 109
 110         __u8              *in_buf;      /* receive buffer */
 111         __u8              *out_buf;     /* transmit buffer */
 112         __u8              max_rx;       /* max. atomic read from dongle
 113                                            (usually 8), also size of in_buf */
 114         __u8              max_tx;       /* max. atomic write to dongle
 115                                            (usually 8) */
 116
 117         iobuff_t          rx_buff;      /* receive unwrap state machine */
 118         struct timeval    rx_time;
 119         spinlock_t lock;
 120         int receiving;
 121
 122         __u8 ep_in;
 123         __u8 ep_out;
 124
 125         struct urb       *tx_urb;
 126         struct urb       *rx_urb;
 127 };
 128
 129 /* Callback transmission routine */
 130 static void kingsun_send_irq(struct urb *urb)
 131 {
 132         struct kingsun_cb *kingsun = urb->context;
 133         struct net_device *netdev = kingsun->netdev;
 134
 135         /* in process of stopping, just drop data */
 136         if (!netif_running(kingsun->netdev)) {
 137                 err("kingsun_send_irq: Network not running!");
 138                 return;
 139         }
 140
 141         /* unlink, shutdown, unplug, other nasties */
 142         if (urb->status != 0) {
 143                 err("kingsun_send_irq: urb asynchronously failed - %d",
 144                     urb->status);
 145         }
 146         netif_wake_queue(netdev);
 147 }
 148
 149 /*
 150  * Called from net/core when new frame is available.
 151  */
 152 static netdev_tx_t kingsun_hard_xmit(struct sk_buff *skb,
 153                                            struct net_device *netdev)
 154 {
 155         struct kingsun_cb *kingsun;
 156         int wraplen;
 157         int ret = 0;
 158
 159         netif_stop_queue(netdev);
 160
 161         /* the IRDA wrapping routines don't deal with non linear skb */
 162         SKB_LINEAR_ASSERT(skb);
 163
 164         kingsun = netdev_priv(netdev);
 165
 166         spin_lock(&kingsun->lock);
 167
 168         /* Append data to the end of whatever data remains to be transmitted */
 169         wraplen = async_wrap_skb(skb,
 170                 kingsun->out_buf,
 171                 KINGSUN_FIFO_SIZE);
 172
 173         /* Calculate how much data can be transmitted in this urb */
 174         usb_fill_int_urb(kingsun->tx_urb, kingsun->usbdev,
 175                 usb_sndintpipe(kingsun->usbdev, kingsun->ep_out),
 176                 kingsun->out_buf, wraplen, kingsun_send_irq,
 177                 kingsun, 1);
 178
 179         if ((ret = usb_submit_urb(kingsun->tx_urb, GFP_ATOMIC))) {
 180                 err("kingsun_hard_xmit: failed tx_urb submit: %d", ret);
 181                 switch (ret) {
 182                 case -ENODEV:
 183                 case -EPIPE:
 184                         break;
 185                 default:
 186                         netdev->stats.tx_errors++;
 187                         netif_start_queue(netdev);
 188                 }
 189         } else {
 190                 netdev->stats.tx_packets++;
 191                 netdev->stats.tx_bytes += skb->len;
 192         }
 193
 194         dev_kfree_skb(skb);
 195         spin_unlock(&kingsun->lock);
 196
 197         return NETDEV_TX_OK;
 198 }
 199
 200 /* Receive callback function */
 201 static void kingsun_rcv_irq(struct urb *urb)
 202 {
 203         struct kingsun_cb *kingsun = urb->context;
 204         int ret;
 205
 206         /* in process of stopping, just drop data */
 207         if (!netif_running(kingsun->netdev)) {
 208                 kingsun->receiving = 0;
 209                 return;
 210         }
 211
 212         /* unlink, shutdown, unplug, other nasties */
 213         if (urb->status != 0) {
 214                 err("kingsun_rcv_irq: urb asynchronously failed - %d",
 215                     urb->status);
 216                 kingsun->receiving = 0;
 217                 return;
 218         }
 219
 220         if (urb->actual_length == kingsun->max_rx) {
 221                 __u8 *bytes = urb->transfer_buffer;
 222                 int i;
 223
 224                 /* The very first byte in the buffer indicates the length of
 225                    valid data in the read. This byte must be in the range
 226                    1..kingsun->max_rx -1 . Values outside this range indicate
 227                    an uninitialized Rx buffer when the dongle has just been
 228                    plugged in. */
 229                 if (bytes[0] >= 1 && bytes[0] < kingsun->max_rx) {
 230                         for (i = 1; i <= bytes[0]; i++) {
 231                                 async_unwrap_char(kingsun->netdev,
 232                                                   &kingsun->netdev->stats,
 233                                                   &kingsun->rx_buff, bytes[i]);
 234                         }
 235                         do_gettimeofday(&kingsun->rx_time);
 236                         kingsun->receiving =
 237                                 (kingsun->rx_buff.state != OUTSIDE_FRAME)
 238                                 ? 1 : 0;
 239                 }
 240         } else if (urb->actual_length > 0) {
 241                 err("%s(): Unexpected response length, expected %d got %d",
 242                     __func__, kingsun->max_rx, urb->actual_length);
 243         }
 244         /* This urb has already been filled in kingsun_net_open */
 245         ret = usb_submit_urb(urb, GFP_ATOMIC);
 246 }
 247
 248 /*
 249  * Function kingsun_net_open (dev)
 250  *
 251  *    Network device is taken up. Usually this is done by "ifconfig irda0 up"
 252  */
 253 static int kingsun_net_open(struct net_device *netdev)
 254 {
 255         struct kingsun_cb *kingsun = netdev_priv(netdev);
 256         int err = -ENOMEM;
 257         char hwname[16];
 258
 259         /* At this point, urbs are NULL, and skb is NULL (see kingsun_probe) */
 260         kingsun->receiving = 0;
 261
 262         /* Initialize for SIR to copy data directly into skb.  */
 263         kingsun->rx_buff.in_frame = FALSE;
 264         kingsun->rx_buff.state = OUTSIDE_FRAME;
 265         kingsun->rx_buff.truesize = IRDA_SKB_MAX_MTU;
 266         kingsun->rx_buff.skb = dev_alloc_skb(IRDA_SKB_MAX_MTU);
 267         if (!kingsun->rx_buff.skb)
 268                 goto free_mem;
 269
 270         skb_reserve(kingsun->rx_buff.skb, 1);
 271         kingsun->rx_buff.head = kingsun->rx_buff.skb->data;
 272         do_gettimeofday(&kingsun->rx_time);
 273
 274         kingsun->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
 275         if (!kingsun->rx_urb)
 276                 goto free_mem;
 277
 278         kingsun->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
 279         if (!kingsun->tx_urb)
 280                 goto free_mem;
 281
 282         /*
 283          * Now that everything should be initialized properly,
 284          * Open new IrLAP layer instance to take care of us...
 285          */
 286         sprintf(hwname, "usb#%d", kingsun->usbdev->devnum);
 287         kingsun->irlap = irlap_open(netdev, &kingsun->qos, hwname);
 288         if (!kingsun->irlap) {
 289                 err("kingsun-sir: irlap_open failed");
 290                 goto free_mem;
 291         }
 292
 293         /* Start first reception */
 294         usb_fill_int_urb(kingsun->rx_urb, kingsun->usbdev,
 295                           usb_rcvintpipe(kingsun->usbdev, kingsun->ep_in),
 296                           kingsun->in_buf, kingsun->max_rx,
 297                           kingsun_rcv_irq, kingsun, 1);
 298         kingsun->rx_urb->status = 0;
 299         err = usb_submit_urb(kingsun->rx_urb, GFP_KERNEL);
 300         if (err) {
 301                 err("kingsun-sir: first urb-submit failed: %d", err);
 302                 goto close_irlap;
 303         }
 304
 305         netif_start_queue(netdev);
 306
 307         /* Situation at this point:
 308            - all work buffers allocated
 309            - urbs allocated and ready to fill
 310            - max rx packet known (in max_rx)
 311            - unwrap state machine initialized, in state outside of any frame
 312            - receive request in progress
 313            - IrLAP layer started, about to hand over packets to send
 314          */
 315
 316         return 0;
 317
 318  close_irlap:
 319         irlap_close(kingsun->irlap);
 320  free_mem:
 321         if (kingsun->tx_urb) {
 322                 usb_free_urb(kingsun->tx_urb);
 323                 kingsun->tx_urb = NULL;
 324         }
 325         if (kingsun->rx_urb) {
 326                 usb_free_urb(kingsun->rx_urb);
 327                 kingsun->rx_urb = NULL;
 328         }
 329         if (kingsun->rx_buff.skb) {
 330                 kfree_skb(kingsun->rx_buff.skb);
 331                 kingsun->rx_buff.skb = NULL;
 332                 kingsun->rx_buff.head = NULL;
 333         }
 334         return err;
 335 }
 336
 337 /*
 338  * Function kingsun_net_close (kingsun)
 339  *
 340  *    Network device is taken down. Usually this is done by
 341  *    "ifconfig irda0 down"
 342  */
 343 static int kingsun_net_close(struct net_device *netdev)
 344 {
 345         struct kingsun_cb *kingsun = netdev_priv(netdev);
 346
 347         /* Stop transmit processing */
 348         netif_stop_queue(netdev);
 349
 350         /* Mop up receive && transmit urb's */
 351         usb_kill_urb(kingsun->tx_urb);
 352         usb_kill_urb(kingsun->rx_urb);
 353
 354         usb_free_urb(kingsun->tx_urb);
 355         usb_free_urb(kingsun->rx_urb);
 356
 357         kingsun->tx_urb = NULL;
 358         kingsun->rx_urb = NULL;
 359
 360         kfree_skb(kingsun->rx_buff.skb);
 361         kingsun->rx_buff.skb = NULL;
 362         kingsun->rx_buff.head = NULL;
 363         kingsun->rx_buff.in_frame = FALSE;
 364         kingsun->rx_buff.state = OUTSIDE_FRAME;
 365         kingsun->receiving = 0;
 366
 367         /* Stop and remove instance of IrLAP */
 368         if (kingsun->irlap)
 369                 irlap_close(kingsun->irlap);
 370
 371         kingsun->irlap = NULL;
 372
 373         return 0;
 374 }
 375
 376 /*
 377  * IOCTLs : Extra out-of-band network commands...
 378  */
 379 static int kingsun_net_ioctl(struct net_device *netdev, struct ifreq *rq,
 380                              int cmd)
 381 {
 382         struct if_irda_req *irq = (struct if_irda_req *) rq;
 383         struct kingsun_cb *kingsun = netdev_priv(netdev);
 384         int ret = 0;
 385
 386         switch (cmd) {
 387         case SIOCSBANDWIDTH: /* Set bandwidth */
 388                 if (!capable(CAP_NET_ADMIN))
 389                         return -EPERM;
 390
 391                 /* Check if the device is still there */
 392                 if (netif_device_present(kingsun->netdev))
 393                         /* No observed commands for speed change */
 394                         ret = -EOPNOTSUPP;
 395                 break;
 396
 397         case SIOCSMEDIABUSY: /* Set media busy */
 398                 if (!capable(CAP_NET_ADMIN))
 399                         return -EPERM;
 400
 401                 /* Check if the IrDA stack is still there */
 402                 if (netif_running(kingsun->netdev))
 403                         irda_device_set_media_busy(kingsun->netdev, TRUE);
 404                 break;
 405
 406         case SIOCGRECEIVING:
 407                 /* Only approximately true */
 408                 irq->ifr_receiving = kingsun->receiving;
 409                 break;
 410
 411         default:
 412                 ret = -EOPNOTSUPP;
 413         }
 414
 415         return ret;
 416 }
 417
 418 static const struct net_device_ops kingsun_ops = {
 419         .ndo_start_xmit      = kingsun_hard_xmit,
 420         .ndo_open            = kingsun_net_open,
 421         .ndo_stop            = kingsun_net_close,
 422         .ndo_do_ioctl        = kingsun_net_ioctl,
 423 };
 424
 425 /*
 426  * This routine is called by the USB subsystem for each new device
 427  * in the system. We need to check if the device is ours, and in
 428  * this case start handling it.
 429  */
 430 static int kingsun_probe(struct usb_interface *intf,
 431                       const struct usb_device_id *id)
 432 {
 433         struct usb_host_interface *interface;
 434         struct usb_endpoint_descriptor *endpoint;
 435
 436         struct usb_device *dev = interface_to_usbdev(intf);
 437         struct kingsun_cb *kingsun = NULL;
 438         struct net_device *net = NULL;
 439         int ret = -ENOMEM;
 440         int pipe, maxp_in, maxp_out;
 441         __u8 ep_in;
 442         __u8 ep_out;
 443
 444         /* Check that there really are two interrupt endpoints.
 445            Check based on the one in drivers/usb/input/usbmouse.c
 446          */
 447         interface = intf->cur_altsetting;
 448         if (interface->desc.bNumEndpoints != 2) {
 449                 err("kingsun-sir: expected 2 endpoints, found %d",
 450                     interface->desc.bNumEndpoints);
 451                 return -ENODEV;
 452         }
 453         endpoint = &interface->endpoint[KINGSUN_EP_IN].desc;
 454         if (!usb_endpoint_is_int_in(endpoint)) {
 455                 err("kingsun-sir: endpoint 0 is not interrupt IN");
 456                 return -ENODEV;
 457         }
 458
 459         ep_in = endpoint->bEndpointAddress;
 460         pipe = usb_rcvintpipe(dev, ep_in);
 461         maxp_in = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
 462         if (maxp_in > 255 || maxp_in <= 1) {
 463                 err("%s: endpoint 0 has max packet size %d not in range",
 464                     __FILE__, maxp_in);
 465                 return -ENODEV;
 466         }
 467
 468         endpoint = &interface->endpoint[KINGSUN_EP_OUT].desc;
 469         if (!usb_endpoint_is_int_out(endpoint)) {
 470                 err("kingsun-sir: endpoint 1 is not interrupt OUT");
 471                 return -ENODEV;
 472         }
 473
 474         ep_out = endpoint->bEndpointAddress;
 475         pipe = usb_sndintpipe(dev, ep_out);
 476         maxp_out = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
 477
 478         /* Allocate network device container. */
 479         net = alloc_irdadev(sizeof(*kingsun));
 480         if(!net)
 481                 goto err_out1;
 482
 483         SET_NETDEV_DEV(net, &intf->dev);
 484         kingsun = netdev_priv(net);
 485         kingsun->irlap = NULL;
 486         kingsun->tx_urb = NULL;
 487         kingsun->rx_urb = NULL;
 488         kingsun->ep_in = ep_in;
 489         kingsun->ep_out = ep_out;
 490         kingsun->in_buf = NULL;
 491         kingsun->out_buf = NULL;
 492         kingsun->max_rx = (__u8)maxp_in;
 493         kingsun->max_tx = (__u8)maxp_out;
 494         kingsun->netdev = net;
 495         kingsun->usbdev = dev;
 496         kingsun->rx_buff.in_frame = FALSE;
 497         kingsun->rx_buff.state = OUTSIDE_FRAME;
 498         kingsun->rx_buff.skb = NULL;
 499         kingsun->receiving = 0;
 500         spin_lock_init(&kingsun->lock);
 501
 502         /* Allocate input buffer */
 503         kingsun->in_buf = kmalloc(kingsun->max_rx, GFP_KERNEL);
 504         if (!kingsun->in_buf)
 505                 goto free_mem;
 506
 507         /* Allocate output buffer */
 508         kingsun->out_buf = kmalloc(KINGSUN_FIFO_SIZE, GFP_KERNEL);
 509         if (!kingsun->out_buf)
 510                 goto free_mem;
 511
 512         printk(KERN_INFO "KingSun/DonShine IRDA/USB found at address %d, "
 513                 "Vendor: %x, Product: %x\n",
 514                dev->devnum, le16_to_cpu(dev->descriptor.idVendor),
 515                le16_to_cpu(dev->descriptor.idProduct));
 516
 517         /* Initialize QoS for this device */
 518         irda_init_max_qos_capabilies(&kingsun->qos);
 519
 520         /* That's the Rx capability. */
 521         kingsun->qos.baud_rate.bits       &= IR_9600;
 522         kingsun->qos.min_turn_time.bits   &= KINGSUN_MTT;
 523         irda_qos_bits_to_value(&kingsun->qos);
 524
 525         /* Override the network functions we need to use */
 526         net->netdev_ops = &kingsun_ops;
 527
 528         ret = register_netdev(net);
 529         if (ret != 0)
 530                 goto free_mem;
 531
 532         dev_info(&net->dev, "IrDA: Registered KingSun/DonShine device %s\n",
 533                  net->name);
 534
 535         usb_set_intfdata(intf, kingsun);
 536
 537         /* Situation at this point:
 538            - all work buffers allocated
 539            - urbs not allocated, set to NULL
 540            - max rx packet known (in max_rx)
 541            - unwrap state machine (partially) initialized, but skb == NULL
 542          */
 543
 544         return 0;
 545
 546 free_mem:
 547         if (kingsun->out_buf) kfree(kingsun->out_buf);
 548         if (kingsun->in_buf) kfree(kingsun->in_buf);
 549         free_netdev(net);
 550 err_out1:
 551         return ret;
 552 }
 553
 554 /*
 555  * The current device is removed, the USB layer tell us to shut it down...
 556  */
 557 static void kingsun_disconnect(struct usb_interface *intf)
 558 {
 559         struct kingsun_cb *kingsun = usb_get_intfdata(intf);
 560
 561         if (!kingsun)
 562                 return;
 563
 564         unregister_netdev(kingsun->netdev);
 565
 566         /* Mop up receive && transmit urb's */
 567         if (kingsun->tx_urb != NULL) {
 568                 usb_kill_urb(kingsun->tx_urb);
 569                 usb_free_urb(kingsun->tx_urb);
 570                 kingsun->tx_urb = NULL;
 571         }
 572         if (kingsun->rx_urb != NULL) {
 573                 usb_kill_urb(kingsun->rx_urb);
 574                 usb_free_urb(kingsun->rx_urb);
 575                 kingsun->rx_urb = NULL;
 576         }
 577
 578         kfree(kingsun->out_buf);
 579         kfree(kingsun->in_buf);
 580         free_netdev(kingsun->netdev);
 581
 582         usb_set_intfdata(intf, NULL);
 583 }
 584
 585 #ifdef CONFIG_PM
 586 /* USB suspend, so power off the transmitter/receiver */
 587 static int kingsun_suspend(struct usb_interface *intf, pm_message_t message)
 588 {
 589         struct kingsun_cb *kingsun = usb_get_intfdata(intf);
 590
 591         netif_device_detach(kingsun->netdev);
 592         if (kingsun->tx_urb != NULL) usb_kill_urb(kingsun->tx_urb);
 593         if (kingsun->rx_urb != NULL) usb_kill_urb(kingsun->rx_urb);
 594         return 0;
 595 }
 596
 597 /* Coming out of suspend, so reset hardware */
 598 static int kingsun_resume(struct usb_interface *intf)
 599 {
 600         struct kingsun_cb *kingsun = usb_get_intfdata(intf);
 601
 602         if (kingsun->rx_urb != NULL)
 603                 usb_submit_urb(kingsun->rx_urb, GFP_KERNEL);
 604         netif_device_attach(kingsun->netdev);
 605
 606         return 0;
 607 }
 608 #endif
 609
 610 /*
 611  * USB device callbacks
 612  */
 613 static struct usb_driver irda_driver = {
 614         .name           = "kingsun-sir",
 615         .probe          = kingsun_probe,
 616         .disconnect     = kingsun_disconnect,
 617         .id_table       = dongles,
 618 #ifdef CONFIG_PM
 619         .suspend        = kingsun_suspend,
 620         .resume         = kingsun_resume,
 621 #endif
 622 };
 623
 624 /*
 625  * Module insertion
 626  */
 627 static int __init kingsun_init(void)
 628 {
 629         return usb_register(&irda_driver);
 630 }
 631 module_init(kingsun_init);
 632
 633 /*
 634  * Module removal
 635  */
 636 static void __exit kingsun_cleanup(void)
 637 {
 638         /* Deregister the driver and remove all pending instances */
 639         usb_deregister(&irda_driver);
 640 }
 641 module_exit(kingsun_cleanup);
 642
 643 MODULE_AUTHOR("Alex Villacís Lasso <a_villacis@palosanto.com>");
 644 MODULE_DESCRIPTION("IrDA-USB Dongle Driver for KingSun/DonShine");
 645 MODULE_LICENSE("GPL");