summaryrefslogtreecommitdiffstats
path: root/drivers/net/irda/kingsun-sir.c
blob: c747c874d44d8388acaf199ab6373761e27a0f4d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
/*****************************************************************************
*
* Filename:      kingsun-sir.c
* Version:       0.1.1
* Description:   Irda KingSun/DonShine USB Dongle
* Status:        Experimental
* Author:        Alex Villacís Lasso <a_villacis@palosanto.com>
*
*  	Based on stir4200 and mcs7780 drivers, with (strange?) differences
*
*	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.
*
*	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., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*****************************************************************************/

/*
 * This is my current (2007-04-25) understanding of how this dongle is supposed
 * to work. This is based on reverse-engineering and examination of the packet
 * data sent and received by the WinXP driver using USBSnoopy. Feel free to
 * update here as more of this dongle is known:
 *
 * General: Unlike the other USB IrDA dongles, this particular dongle exposes,
 * not two bulk (in and out) endpoints, but two *interrupt* ones. This dongle,
 * like the bulk based ones (stir4200.c and mcs7780.c), requires polling in
 * order to receive data.
 * Transmission: Just like stir4200, this dongle uses a raw stream of data,
 * which needs to be wrapped and escaped in a similar way as in stir4200.c.
 * Reception: Poll-based, as in stir4200. Each read returns the contents of a
 * 8-byte buffer, of which the first byte (LSB) indicates the number of bytes
 * (1-7) of valid data contained within the remaining 7 bytes. For example, if
 * the buffer had the following contents:
 *  06 ff ff ff c0 01 04 aa
 * This means that (06) there are 6 bytes of valid data. The byte 0xaa at the
 * end is garbage (left over from a previous reception) and is discarded.
 * If a read returns an "impossible" value as the length of valid data (such as
 * 0x36) in the first byte, then the buffer is uninitialized (as is the case of
 * first plug-in) and its contents should be discarded. There is currently no
 * evidence that the top 5 bits of the 1st byte of the buffer can have values
 * other than 0 once reception begins.
 * Once valid bytes are collected, the assembled stream is a sequence of
 * wrapped IrDA frames that is unwrapped and unescaped as in stir4200.c.
 * BIG FAT WARNING: the dongle does *not* reset the RX buffer in any way after
 * a successful read from the host, which means that in absence of further
 * reception, repeated reads from the dongle will return the exact same
 * contents repeatedly. Attempts to be smart and cache a previous read seem
 * to result in corrupted packets, so this driver depends on the unwrap logic
 * to sort out any repeated reads.
 * Speed change: no commands observed so far to change speed, assumed fixed
 * 9600bps (SIR).
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/kref.h>
#include <linux/usb.h>
#include <linux/device.h>
#include <linux/crc32.h>

#include <asm/unaligned.h>
#include <asm/byteorder.h>
#include <asm/uaccess.h>

#include <net/irda/irda.h>
#include <net/irda/wrapper.h>
#include <net/irda/crc.h>

/*
 * According to lsusb, 0x07c0 is assigned to
 * "Code Mercenaries Hard- und Software GmbH"
 */
#define KING_VENDOR_ID 0x07c0
#define KING_PRODUCT_ID 0x4200

/* These are the currently known USB ids */
static struct usb_device_id dongles[] = {
    /* KingSun Co,Ltd  IrDA/USB Bridge */
    { USB_DEVICE(KING_VENDOR_ID, KING_PRODUCT_ID) },
    { }
};

MODULE_DEVICE_TABLE(usb, dongles);

#define KINGSUN_MTT 0x07

#define KINGSUN_FIFO_SIZE		4096
#define KINGSUN_EP_IN			0
#define KINGSUN_EP_OUT			1

struct kingsun_cb {
	struct usb_device *usbdev;      /* init: probe_irda */
	struct net_device *netdev;      /* network layer */
	struct irlap_cb   *irlap;       /* The link layer we are binded to */
	struct net_device_stats stats;	/* network statistics */
	struct qos_info   qos;

	__u8		  *in_buf;	/* receive buffer */
	__u8		  *out_buf;	/* transmit buffer */
	__u8		  max_rx;	/* max. atomic read from dongle
					   (usually 8), also size of in_buf */
	__u8		  max_tx;	/* max. atomic write to dongle
					   (usually 8) */

	iobuff_t  	  rx_buff;	/* receive unwrap state machine */
	struct timeval	  rx_time;
	spinlock_t lock;
	int receiving;

	__u8 ep_in;
	__u8 ep_out;

	struct urb	 *tx_urb;
	struct urb	 *rx_urb;
};

/* Callback transmission routine */
static void kingsun_send_irq(struct urb *urb)
{
	struct kingsun_cb *kingsun = urb->context;
	struct net_device *netdev = kingsun->netdev;

	/* in process of stopping, just drop data */
	if (!netif_running(kingsun->netdev)) {
		err("kingsun_send_irq: Network not running!");
		return;
	}

	/* unlink, shutdown, unplug, other nasties */
	if (urb->status != 0) {
		err("kingsun_send_irq: urb asynchronously failed - %d",
		    urb->status);
	}
	netif_wake_queue(netdev);
}

/*
 * Called from net/core when new frame is available.
 */
static int kingsun_hard_xmit(struct sk_buff *skb, struct net_device *netdev)
{
	struct kingsun_cb *kingsun;
	int wraplen;
	int ret = 0;

	if (skb == NULL || netdev == NULL)
		return -EINVAL;

	netif_stop_queue(netdev);

	/* the IRDA wrapping routines don't deal with non linear skb */
	SKB_LINEAR_ASSERT(skb);

	kingsun = netdev_priv(netdev);

	spin_lock(&kingsun->lock);

	/* Append data to the end of whatever data remains to be transmitted */
	wraplen = async_wrap_skb(skb,
		kingsun->out_buf,
		KINGSUN_FIFO_SIZE);

	/* Calculate how much data can be transmitted in this urb */
	usb_fill_int_urb(kingsun->tx_urb, kingsun->usbdev,
		usb_sndintpipe(kingsun->usbdev, kingsun->ep_out),
		kingsun->out_buf, wraplen, kingsun_send_irq,
		kingsun, 1);

	if ((ret = usb_submit_urb(kingsun->tx_urb, GFP_ATOMIC))) {
		err("kingsun_hard_xmit: failed tx_urb submit: %d", ret);
		switch (ret) {
		case -ENODEV:
		case -EPIPE:
			break;
		default:
			kingsun->stats.tx_errors++;
			netif_start_queue(netdev);
		}
	} else {
		kingsun->stats.tx_packets++;
		kingsun->stats.tx_bytes += skb->len;
	}

	dev_kfree_skb(skb);
	spin_unlock(&kingsun->lock);

	return ret;
}

/* Receive callback function */
static void kingsun_rcv_irq(struct urb *urb)
{
	struct kingsun_cb *kingsun = urb->context;
	int ret;

	/* in process of stopping, just drop data */
	if (!netif_running(kingsun->netdev)) {
		kingsun->receiving = 0;
		return;
	}

	/* unlink, shutdown, unplug, other nasties */
	if (urb->status != 0) {
		err("kingsun_rcv_irq: urb asynchronously failed - %d",
		    urb->status);
		kingsun->receiving = 0;
		return;
	}

	if (urb->actual_length == kingsun->max_rx) {
		__u8 *bytes = urb->transfer_buffer;
		int i;

		/* The very first byte in the buffer indicates the length of
		   valid data in the read. This byte must be in the range
		   1..kingsun->max_rx -1 . Values outside this range indicate
		   an uninitialized Rx buffer when the dongle has just been
		   plugged in. */
		if (bytes[0] >= 1 && bytes[0] < kingsun->max_rx) {
			for (i = 1; i <= bytes[0]; i++) {
				async_unwrap_char(kingsun->netdev,
						  &kingsun->stats,
						  &kingsun->rx_buff, bytes[i]);
			}
			do_gettimeofday(&kingsun->rx_time);
			kingsun->receiving =
				(kingsun->rx_buff.state != OUTSIDE_FRAME)
				? 1 : 0;
		}
	} else if (urb->actual_length > 0) {
		err("%s(): Unexpected response length, expected %d got %d",
		    __func__, kingsun->max_rx, urb->actual_length);
	}
	/* This urb has already been filled in kingsun_net_open */
	ret = usb_submit_urb(urb, GFP_ATOMIC);
}

/*
 * Function kingsun_net_open (dev)
 *
 *    Network device is taken up. Usually this is done by "ifconfig irda0 up"
 */
static int kingsun_net_open(struct net_device *netdev)
{
	struct kingsun_cb *kingsun = netdev_priv(netdev);
	int err = -ENOMEM;
	char hwname[16];

	/* At this point, urbs are NULL, and skb is NULL (see kingsun_probe) */
	kingsun->receiving = 0;

	/* Initialize for SIR to copy data directly into skb.  */
	kingsun->rx_buff.in_frame = FALSE;
	kingsun->rx_buff.state = OUTSIDE_FRAME;
	kingsun->rx_buff.truesize = IRDA_SKB_MAX_MTU;
	kingsun->rx_buff.skb = dev_alloc_skb(IRDA_SKB_MAX_MTU);
	if (!kingsun->rx_buff.skb)
		goto free_mem;

	skb_reserve(kingsun->rx_buff.skb, 1);
	kingsun->rx_buff.head = kingsun->rx_buff.skb->data;
	do_gettimeofday(&kingsun->rx_time);

	kingsun->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
	if (!kingsun->rx_urb)
		goto free_mem;

	kingsun->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
	if (!kingsun->tx_urb)
		goto free_mem;

	/*
	 * Now that everything should be initialized properly,
	 * Open new IrLAP layer instance to take care of us...
	 */
	sprintf(hwname, "usb#%d", kingsun->usbdev->devnum);
	kingsun->irlap = irlap_open(netdev, &kingsun->qos, hwname);
	if (!kingsun->irlap) {
		err("kingsun-sir: irlap_open failed");
		goto free_mem;
	}

	/* Start first reception */
	usb_fill_int_urb(kingsun->rx_urb, kingsun->usbdev,
			  usb_rcvintpipe(kingsun->usbdev, kingsun->ep_in),
			  kingsun->in_buf, kingsun->max_rx,
			  kingsun_rcv_irq, kingsun, 1);
	kingsun->rx_urb->status = 0;
	err = usb_submit_urb(kingsun->rx_urb, GFP_KERNEL);
	if (err) {
		err("kingsun-sir: first urb-submit failed: %d", err);
		goto close_irlap;
	}

	netif_start_queue(netdev);

	/* Situation at this point:
	   - all work buffers allocated
	   - urbs allocated and ready to fill
	   - max rx packet known (in max_rx)
	   - unwrap state machine initialized, in state outside of any frame
	   - receive request in progress
	   - IrLAP layer started, about to hand over packets to send
	 */

	return 0;

 close_irlap:
	irlap_close(kingsun->irlap);
 free_mem:
	if (kingsun->tx_urb) {
		usb_free_urb(kingsun->tx_urb);
		kingsun->tx_urb = NULL;
	}
	if (kingsun->rx_urb) {
		usb_free_urb(kingsun->rx_urb);
		kingsun->rx_urb = NULL;
	}
	if (kingsun->rx_buff.skb) {
		kfree_skb(kingsun->rx_buff.skb);
		kingsun->rx_buff.skb = NULL;
		kingsun->rx_buff.head = NULL;
	}
	return err;
}

/*
 * Function kingsun_net_close (kingsun)
 *
 *    Network device is taken down. Usually this is done by
 *    "ifconfig irda0 down"
 */
static int kingsun_net_close(struct net_device *netdev)
{
	struct kingsun_cb *kingsun = netdev_priv(netdev);

	/* Stop transmit processing */
	netif_stop_queue(netdev);

	/* Mop up receive && transmit urb's */
	usb_kill_urb(kingsun->tx_urb);
	usb_kill_urb(kingsun->rx_urb);

	usb_free_urb(kingsun->tx_urb);
	usb_free_urb(kingsun->rx_urb);

	kingsun->tx_urb = NULL;
	kingsun->rx_urb = NULL;

	kfree_skb(kingsun->rx_buff.skb);
	kingsun->rx_buff.skb = NULL;
	kingsun->rx_buff.head = NULL;
	kingsun->rx_buff.in_frame = FALSE;
	kingsun->rx_buff.state = OUTSIDE_FRAME;
	kingsun->receiving = 0;

	/* Stop and remove instance of IrLAP */
	if (kingsun->irlap)
		irlap_close(kingsun->irlap);

	kingsun->irlap = NULL;

	return 0;
}

/*
 * IOCTLs : Extra out-of-band network commands...
 */
static int kingsun_net_ioctl(struct net_device *netdev, struct ifreq *rq,
			     int cmd)
{
	struct if_irda_req *irq = (struct if_irda_req *) rq;
	struct kingsun_cb *kingsun = netdev_priv(netdev);
	int ret = 0;

	switch (cmd) {
	case SIOCSBANDWIDTH: /* Set bandwidth */
		if (!capable(CAP_NET_ADMIN))
			return -EPERM;

		/* Check if the device is still there */
		if (netif_device_present(kingsun->netdev))
			/* No observed commands for speed change */
			ret = -EOPNOTSUPP;
		break;

	case SIOCSMEDIABUSY: /* Set media busy */
		if (!capable(CAP_NET_ADMIN))
			return -EPERM;

		/* Check if the IrDA stack is still there */
		if (netif_running(kingsun->netdev))
			irda_device_set_media_busy(kingsun->netdev, TRUE);
		break;

	case SIOCGRECEIVING:
		/* Only approximately true */
		irq->ifr_receiving = kingsun->receiving;
		break;

	default:
		ret = -EOPNOTSUPP;
	}

	return ret;
}

/*
 * Get device stats (for /proc/net/dev and ifconfig)
 */
static struct net_device_stats *
kingsun_net_get_stats(struct net_device *netdev)
{
	struct kingsun_cb *kingsun = netdev_priv(netdev);
	return &kingsun->stats;
}

/*
 * This routine is called by the USB subsystem for each new device
 * in the system. We need to check if the device is ours, and in
 * this case start handling it.
 */
static int kingsun_probe(struct usb_interface *intf,
		      const struct usb_device_id *id)
{
	struct usb_host_interface *interface;
	struct usb_endpoint_descriptor *endpoint;

	struct usb_device *dev = interface_to_usbdev(intf);
	struct kingsun_cb *kingsun = NULL;
	struct net_device *net = NULL;
	int ret = -ENOMEM;
	int pipe, maxp_in, maxp_out;
	__u8 ep_in;
	__u8 ep_out;

	/* Check that there really are two interrupt endpoints.
	   Check based on the one in drivers/usb/input/usbmouse.c
	 */
	interface = intf->cur_altsetting;
	if (interface->desc.bNumEndpoints != 2) {
		err("kingsun-sir: expected 2 endpoints, found %d",
		    interface->desc.bNumEndpoints);
		return -ENODEV;
	}
	endpoint = &interface->endpoint[KINGSUN_EP_IN].desc;
	if (!usb_endpoint_is_int_in(endpoint)) {
		err("kingsun-sir: endpoint 0 is not interrupt IN");
		return -ENODEV;
	}

	ep_in = endpoint->bEndpointAddress;
	pipe = usb_rcvintpipe(dev, ep_in);
	maxp_in = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
	if (maxp_in > 255 || maxp_in <= 1) {
		err("%s: endpoint 0 has max packet size %d not in range",
		    __FILE__, maxp_in);
		return -ENODEV;
	}

	endpoint = &interface->endpoint[KINGSUN_EP_OUT].desc;
	if (!usb_endpoint_is_int_out(endpoint)) {
		err("kingsun-sir: endpoint 1 is not interrupt OUT");
		return -ENODEV;
	}

	ep_out = endpoint->bEndpointAddress;
	pipe = usb_sndintpipe(dev, ep_out);
	maxp_out = usb_maxpacket(dev, pipe, usb_pipeout(pipe));

	/* Allocate network device container. */
	net = alloc_irdadev(sizeof(*kingsun));
	if(!net)
		goto err_out1;

	SET_NETDEV_DEV(net, &intf->dev);
	kingsun = netdev_priv(net);
	kingsun->irlap = NULL;
	kingsun->tx_urb = NULL;
	kingsun->rx_urb = NULL;
	kingsun->ep_in = ep_in;
	kingsun->ep_out = ep_out;
	kingsun->in_buf = NULL;
	kingsun->out_buf = NULL;
	kingsun->max_rx = (__u8)maxp_in;
	kingsun->max_tx = (__u8)maxp_out;
	kingsun->netdev = net;
	kingsun->usbdev = dev;
	kingsun->rx_buff.in_frame = FALSE;
	kingsun->rx_buff.state = OUTSIDE_FRAME;
	kingsun->rx_buff.skb = NULL;
	kingsun->receiving = 0;
	spin_lock_init(&kingsun->lock);

	/* Allocate input buffer */
	kingsun->in_buf = kmalloc(kingsun->max_rx, GFP_KERNEL);
	if (!kingsun->in_buf)
		goto free_mem;

	/* Allocate output buffer */
	kingsun->out_buf = kmalloc(KINGSUN_FIFO_SIZE, GFP_KERNEL);
	if (!kingsun->out_buf)
		goto free_mem;

	printk(KERN_INFO "KingSun/DonShine IRDA/USB found at address %d, "
		"Vendor: %x, Product: %x\n",
	       dev->devnum, le16_to_cpu(dev->descriptor.idVendor),
	       le16_to_cpu(dev->descriptor.idProduct));

	/* Initialize QoS for this device */
	irda_init_max_qos_capabilies(&kingsun->qos);

	/* That's the Rx capability. */
	kingsun->qos.baud_rate.bits       &= IR_9600;
	kingsun->qos.min_turn_time.bits   &= KINGSUN_MTT;
	irda_qos_bits_to_value(&kingsun->qos);

	/* Override the network functions we need to use */
	net->hard_start_xmit = kingsun_hard_xmit;
	net->open            = kingsun_net_open;
	net->stop            = kingsun_net_close;
	net->get_stats	     = kingsun_net_get_stats;
	net->do_ioctl        = kingsun_net_ioctl;

	ret = register_netdev(net);
	if (ret != 0)
		goto free_mem;

	dev_info(&net->dev, "IrDA: Registered KingSun/DonShine device %s\n",
		 net->name);

	usb_set_intfdata(intf, kingsun);

	/* Situation at this point:
	   - all work buffers allocated
	   - urbs not allocated, set to NULL
	   - max rx packet known (in max_rx)
	   - unwrap state machine (partially) initialized, but skb == NULL
	 */

	return 0;

free_mem:
	if (kingsun->out_buf) kfree(kingsun->out_buf);
	if (kingsun->in_buf) kfree(kingsun->in_buf);
	free_netdev(net);
err_out1:
	return ret;
}

/*
 * The current device is removed, the USB layer tell us to shut it down...
 */
static void kingsun_disconnect(struct usb_interface *intf)
{
	struct kingsun_cb *kingsun = usb_get_intfdata(intf);

	if (!kingsun)
		return;

	unregister_netdev(kingsun->netdev);

	/* Mop up receive && transmit urb's */
	if (kingsun->tx_urb != NULL) {
		usb_kill_urb(kingsun->tx_urb);
		usb_free_urb(kingsun->tx_urb);
		kingsun->tx_urb = NULL;
	}
	if (kingsun->rx_urb != NULL) {
		usb_kill_urb(kingsun->rx_urb);
		usb_free_urb(kingsun->rx_urb);
		kingsun->rx_urb = NULL;
	}

	kfree(kingsun->out_buf);
	kfree(kingsun->in_buf);
	free_netdev(kingsun->netdev);

	usb_set_intfdata(intf, NULL);
}

#ifdef CONFIG_PM
/* USB suspend, so power off the transmitter/receiver */
static int kingsun_suspend(struct usb_interface *intf, pm_message_t message)
{
	struct kingsun_cb *kingsun = usb_get_intfdata(intf);

	netif_device_detach(kingsun->netdev);
	if (kingsun->tx_urb != NULL) usb_kill_urb(kingsun->tx_urb);
	if (kingsun->rx_urb != NULL) usb_kill_urb(kingsun->rx_urb);
	return 0;
}

/* Coming out of suspend, so reset hardware */
static int kingsun_resume(struct usb_interface *intf)
{
	struct kingsun_cb *kingsun = usb_get_intfdata(intf);

	if (kingsun->rx_urb != NULL)
		usb_submit_urb(kingsun->rx_urb, GFP_KERNEL);
	netif_device_attach(kingsun->netdev);

	return 0;
}
#endif

/*
 * USB device callbacks
 */
static struct usb_driver irda_driver = {
	.name		= "kingsun-sir",
	.probe		= kingsun_probe,
	.disconnect	= kingsun_disconnect,
	.id_table	= dongles,
#ifdef CONFIG_PM
	.suspend	= kingsun_suspend,
	.resume		= kingsun_resume,
#endif
};

/*
 * Module insertion
 */
static int __init kingsun_init(void)
{
	return usb_register(&irda_driver);
}
module_init(kingsun_init);

/*
 * Module removal
 */
static void __exit kingsun_cleanup(void)
{
	/* Deregister the driver and remove all pending instances */
	usb_deregister(&irda_driver);
}
module_exit(kingsun_cleanup);

MODULE_AUTHOR("Alex Villacís Lasso <a_villacis@palosanto.com>");
MODULE_DESCRIPTION("IrDA-USB Dongle Driver for KingSun/DonShine");
MODULE_LICENSE("GPL");
OpenPOWER on IntegriCloud