aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/net/wimax/cmc7xx/wimax_sdio.c
blob: 99830dae933bf7205efe936849b786180bcc641c (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
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
/*
 * Copyright (C) 2011 Samsung Electronics.
 *
 * This software is licensed under the terms of the GNU General Public
 * License version 2, as published by the Free Software Foundation, and
 * may be copied, distributed, and modified under those terms.
 *
 * 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.
 *
 */
#include "headers.h"
#include "ctl_types.h"
#include "download.h"

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/netdevice.h>
#include <linux/miscdevice.h>
#include <linux/etherdevice.h>
#include <linux/ethtool.h>
#include <linux/mmc/sdio_ids.h>
#include <linux/mmc/pm.h>
#include <linux/mmc/sdio_func.h>
#include <asm/byteorder.h>
#include <linux/uaccess.h>
#include <linux/delay.h>
#include <linux/fs.h>
#include <linux/platform_device.h>

/* driver Information */
#define WIMAX_DRIVER_VERSION_STRING "3.0.4"
#define DRIVER_AUTHOR "Samsung"
#define DRIVER_DESC "Samsung WiMAX SDIO Device Driver"

#define UWBRBDEVMINOR	233
#define SWMXGPIOMINOR	234

/* use ethtool to change the level for any given device */
static int msg_level = -1;
module_param(msg_level, int, 0);

static long swmxdev_ioctl(struct file *file, u32 cmd,
							unsigned long arg)
{
	int	ret = 0;
	u8	val = ((u8 *)arg)[0];
	struct wimax732_platform_data *gpdata =
		(struct wimax732_platform_data *)(file->private_data);

	pr_debug("CMD: %x, PID: %d", cmd, current->tgid);

	switch (cmd) {
	case CONTROL_IOCTL_WIMAX_POWER_CTL: {
		pr_debug("CONTROL_IOCTL_WIMAX_POWER_CTL..");
		if (val == 0) {
			pr_debug("WIMAX POWER OFF");
			ret = gpdata->power(0);
		} else {
			pr_debug("WIMAX POWER ON");
			ret = gpdata->power(1);
		}
		break;
	}
	case CONTROL_IOCTL_WIMAX_MODE_CHANGE: {
		pr_debug("CONTROL_IOCTL_WIMAX_MODE_CHANGE to 0x%02x..", val);

		if ((val < 0) || (val > AUTH_MODE)) {
			pr_debug("Wrong mode 0x%02x", val);
			return 0;
		}

		gpdata->power(0);
		gpdata->g_cfg->wimax_mode = val;
		ret = gpdata->power(1);
		break;
	}
	}	/* switch (cmd) */

	return ret;
}

static int swmxdev_open(struct inode *inode, struct file *file)
{
	struct wimax732_platform_data *pdata =
		container_of(file->private_data,
				struct wimax732_platform_data, swmxctl_dev);
	file->private_data = pdata;
	return 0;
}

static const struct file_operations swmx_fops = {
	.owner = THIS_MODULE,
	.open = swmxdev_open,
	.unlocked_ioctl = swmxdev_ioctl,
};

/*
*	uwibro functions
*	(send and receive control packet with WiMAX modem)
*/
static int uwbrdev_open(struct inode *inode, struct file *file)
{
	struct net_adapter	*adapter = container_of(file->private_data,
			struct net_adapter, uwibro_dev);
	struct process_descriptor	*procdsc;

	if ((adapter == NULL) || adapter->halted) {
		pr_debug("can't find adapter or Device Removed");
		return -ENODEV;
	}

	file->private_data = adapter;
	pr_debug("open: tgid=%d", current->tgid);

	if (!adapter->mac_ready || adapter->halted) {
		pr_debug("Device not ready Retry..");
		return -ENXIO;
	}

	/* init new process descriptor */
	procdsc = kmalloc(sizeof(*procdsc), GFP_KERNEL);
	if (procdsc == NULL) {
		pr_debug("uwbrdev_open: kmalloc fail!!");
		return -ENOMEM;
	}

	procdsc->id = current->tgid;
	procdsc->irp = false;
	procdsc->type = 0;
	init_waitqueue_head(&procdsc->read_wait);
	spin_lock(&adapter->ctl.apps.lock);
	list_add_tail(&procdsc->list, &adapter->ctl.apps.process_list);
	spin_unlock(&adapter->ctl.apps.lock);
	return 0;
}

static int uwbrdev_release(struct inode *inode, struct file *file)
{
	struct net_adapter		*adapter;
	struct process_descriptor	*procdsc;
	int				current_tgid = 0;

	pr_debug("release: tgid=%d, pid=%d", current->tgid, current->pid);

	adapter = (struct net_adapter *)(file->private_data);
	if (adapter == NULL) {
		pr_debug("can't find adapter");
		return -ENODEV;
	}

	current_tgid = current->tgid;
	procdsc = process_by_id(adapter, current_tgid);

	/* process is not exist. (open process != close process) */
	if (procdsc == NULL) {
		current_tgid = adapter->pdata->g_cfg->temp_tgid;
		pr_debug("release: pid changed: %d", current_tgid);
		procdsc = process_by_id(adapter, current_tgid);
	}

	if (procdsc == NULL) {
		/*not found */
		pr_debug("process %d not found", current_tgid);
		return -ESRCH;
	}

	/* RELEASE READ THREAD */
	if (procdsc->irp) {
		procdsc->irp = false;
		wake_up_interruptible(&procdsc->read_wait);
	}
	spin_lock(&adapter->ctl.apps.lock);
	remove_process(adapter, current_tgid);
	spin_unlock(&adapter->ctl.apps.lock);

	return 0;
}

static long uwbrdev_ioctl(struct file *file, u32 cmd,
			  unsigned long arg)
{
	struct net_adapter		*adapter;
	struct process_descriptor	*procdsc;
	int				ret = 0;
	struct eth_header *ctlhdr;
	u8				*tx_buffer;
	int length;

	adapter = (struct net_adapter *)(file->private_data);

	if ((adapter == NULL) || adapter->halted) {
		pr_debug("can't find adapter or Device Removed");
		return -ENODEV;
	}

	if (cmd != CONTROL_IOCTL_WRITE_REQUEST) {
		pr_debug("uwbrdev_ioctl: unknown ioctl cmd: 0x%x", cmd);
		return -EINVAL;
	}

	if ((char *)arg == NULL) {
		pr_debug("arg == NULL: return -EFAULT");
		return -EFAULT;
	}

	length = ((int *)arg)[0];

	if (length >= WIMAX_MAX_TOTAL_SIZE)
		return -EFBIG;

	tx_buffer = kmalloc(length, GFP_KERNEL);
	if (!tx_buffer) {
		pr_err("%s: not enough memory to allocate tx_buffer\n",
								__func__);
		return -ENOMEM;
	}

	if (copy_from_user(tx_buffer, (void *)(arg + sizeof(int)), length)) {
		pr_err("%s: error copying buffer from user space\n", __func__);
		ret = -EFAULT;
		goto err_copy;
	}

	spin_lock(&adapter->ctl.apps.lock);
	procdsc = process_by_id(adapter, current->tgid);
	if (procdsc == NULL) {
		pr_debug("process %d not found", current->tgid);
		ret = -EFAULT;
		goto err_process;
	}
	ctlhdr = (struct eth_header *)tx_buffer;
	procdsc->type = ctlhdr->type;

	control_send(adapter, tx_buffer, length);

err_process:
	spin_unlock(&adapter->ctl.apps.lock);
err_copy:
	kfree(tx_buffer);
	return ret;
}

static ssize_t uwbrdev_read(struct file *file, char *buf, size_t count,
								loff_t *ppos)
{
	struct buffer_descriptor	*bufdsc;
	struct net_adapter		*adapter;
	struct process_descriptor	*procdsc;
	int				rlen = 0;

	adapter = (struct net_adapter *)(file->private_data);
	if ((adapter == NULL) || adapter->halted) {
		pr_debug("can't find adapter or Device Removed");
		return -ENODEV;
	}

	if (buf == NULL) {
		pr_debug("BUFFER is NULL");
		return -EFAULT; /* bad address */
	}

	procdsc = process_by_id(adapter, current->tgid);
	if (procdsc == NULL) {
		pr_debug("uwbrdev_read: process %d not exist", current->tgid);
		return -ESRCH;
	}

	if (procdsc->irp == true) {
		pr_warn("%s: Read was sent twice by process %d\n", __func__,
								current->tgid);
		return -EEXIST;
	}

	bufdsc = buffer_by_type(adapter, procdsc->type);
	if (bufdsc == NULL) {
		procdsc->irp = true;
		if (wait_event_interruptible(procdsc->read_wait,
				((procdsc->irp == false) ||
				(adapter->halted == true)))) {
			procdsc->irp = false;
			adapter->pdata->g_cfg->temp_tgid = current->tgid;
			return -ERESTARTSYS;
		}
		if (adapter->halted) {
			pr_debug("uwbrdev_read: Card Removed"
					"Indicated to Appln...");
			procdsc->irp = false;
			adapter->pdata->g_cfg->temp_tgid = current->tgid;
			return -ENODEV;
		}
	}

	if (count == 1500) {	/* app passes read count as 1500 */
		spin_lock(&adapter->ctl.apps.lock);
		bufdsc = buffer_by_type(adapter, procdsc->type);
		if (!bufdsc) {
			pr_debug("uwbrdev_read: Fail...node is null");
			spin_unlock(&adapter->ctl.apps.lock);
			return -1;
		}
		spin_unlock(&adapter->ctl.apps.lock);

		if (copy_to_user(buf, bufdsc->buffer, bufdsc->length)) {
			pr_debug("uwbrdev_read: copy_to_user	\
				failed len=%u !!", bufdsc->length);
			return -EFAULT;
		}

		spin_lock(&adapter->ctl.apps.lock);
		rlen = bufdsc->length;
		list_del(&bufdsc->list);
		kfree(bufdsc->buffer);
		kfree(bufdsc);
		spin_unlock(&adapter->ctl.apps.lock);
	}

	return rlen;
}

static const struct file_operations uwbr_fops = {
	.owner = THIS_MODULE,
	.open = uwbrdev_open,
	.release	= uwbrdev_release,
	.unlocked_ioctl	= uwbrdev_ioctl,
	.read		= uwbrdev_read,
};

static int netdev_ethtool_ioctl(struct net_device *dev,
		void *useraddr)
{
	u32	ethcmd;
	struct ethtool_drvinfo info = {ETHTOOL_GDRVINFO};

	if (copy_from_user(&ethcmd, useraddr, sizeof(ethcmd)))
		return -EFAULT;

	if (ethcmd != ETHTOOL_GDRVINFO)
		return -EOPNOTSUPP;

	strncpy(info.driver, "C730USB", sizeof(info.driver) - 1);
	if (copy_to_user(useraddr, &info, sizeof(info)))
		return -EFAULT;

	return 0;
}

static struct net_device_stats *adapter_netdev_stats(struct net_device *dev)
{
	return &((struct net_adapter *)netdev_priv(dev))->netstats;
}

static int adapter_start_xmit(struct sk_buff *skb, struct net_device *net)
{
	struct net_adapter	*adapter = netdev_priv(net);

	if (!adapter->media_state || adapter->halted) {
		pr_debug("Driver already halted. Returning Failure...");
		dev_kfree_skb(skb);
		adapter->netstats.tx_dropped++;
		net->trans_start = jiffies;
		adapter->XmitErr += 1;
		return 0;
	}

	hw_send_data(adapter, skb->data, skb->len);
	dev_kfree_skb(skb);

	if (!adapter->media_state)
		netif_stop_queue(net);

	return 0;
}

static int adapter_open(struct net_device *net)
{
	struct net_adapter	*adapter;
	int			res = 0;

	adapter = netdev_priv(net);

	if (adapter == NULL || adapter->halted) {
		pr_debug("can't find adapter or halted");
		return -ENODEV;
	}

	if (adapter->media_state)
		netif_wake_queue(net);
	else
		netif_stop_queue(net);

	if (netif_msg_ifup(adapter))
		pr_debug("netif msg if up");

	res = 0;

	pr_debug("adapter driver open success!!!!!!!");

	return res;
}

static int adapter_close(struct net_device *net)
{
	pr_debug("adapter driver close success!!!!!!!");

	netif_stop_queue(net);
	return 0;
}

static int adapter_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
{
	struct net_adapter	*adapter = netdev_priv(net);

	if (adapter->halted) {
		pr_debug("Driver already halted. Returning Failure...");
		return STATUS_UNSUCCESSFUL;
	}

	switch (cmd) {
	case SIOCETHTOOL:
		return netdev_ethtool_ioctl(net, (void *)rq->ifr_data);
	default:
		return -EOPNOTSUPP;
	}

	return 0;
}

static void adapter_interrupt(struct sdio_func *func)
{
	struct hw_private_packet	hdr;
	struct net_adapter		*adapter = sdio_get_drvdata(func);
	int				err = 1;
	int				intrd = 0;

	wake_lock_timeout(&adapter->pdata->g_cfg->wimax_rxtx_lock, 0.2 * HZ);

	if (likely(!adapter->halted)) {
		/* read interrupt identification register */
		intrd = sdio_readb(func, SDIO_INT_STATUS_REG, NULL);

		sdio_writeb(func, intrd, SDIO_INT_STATUS_CLR_REG, NULL);

		if (likely(intrd & SDIO_INT_DATA_READY)) {
			adapter->rx_data_available = true;
			wake_up_interruptible(&adapter->receive_event);
		} else if (intrd & SDIO_INT_ERROR) {
			adapter->netstats.rx_errors++;
			pr_debug("adapter_sdio_rx_packet intrd ="
					"SDIO_INT_ERROR occurred!!");
		}
	} else {
		pr_debug("adapter->halted=true in	\
				adapter_interrupt !!!!!!!!!");
		intrd = sdio_readb(func, SDIO_INT_STATUS_REG, NULL);
		sdio_writeb(func, intrd, SDIO_INT_STATUS_CLR_REG, NULL);

		/* send stop message */
		hdr.id0	 = 'W';
		hdr.id1	 = 'P';
		hdr.code  = HWCODEHALTEDINDICATION;
		hdr.value = 0;

		err = sd_send(adapter, (unsigned char *)&hdr,
				sizeof(struct hw_private_packet));
		if (err < 0) {
			pr_debug("adapter->halted=true and send"
				"HaltIndication to FW err = (%d) !!", err);
			return;
		}
	}
}

static struct net_device_ops wimax_net_ops = {
	.ndo_open				=	adapter_open,
	.ndo_stop				=	adapter_close,
	.ndo_get_stats			=	adapter_netdev_stats,
	.ndo_do_ioctl			=	adapter_ioctl,
	.ndo_start_xmit			=	adapter_start_xmit,
};

static int adapter_probe(struct sdio_func *func,
		const struct sdio_device_id *id)
{
	struct net_adapter	*adapter = NULL;
	struct net_device	*net;
	int			err = -ENOMEM;
	u8			 node_id[ETH_ALEN];

	pr_debug("probe");

	net = alloc_etherdev(sizeof(*adapter));
	if (!net) {
		pr_debug("adapter_probe: error can't allocate device");
		goto alloceth_fail;
	}

	adapter = netdev_priv(net);
	memset(adapter, 0, sizeof(*adapter));

	adapter->pdata = (struct wimax732_platform_data *) id->driver_data;
	adapter->pdata->g_cfg->card_removed = false;

	/* Initialize control */
	control_init(adapter);

	/* initialize hardware */
	err = wimax_hw_init(adapter);
	if (err) {
		pr_debug("adapter_probe: error can't allocate"
				"receive buffer");
		goto hwInit_fail;
	}

	strcpy(net->name, "uwbr%d");

	adapter->func = func;
	adapter->net = net;
	net->netdev_ops = &wimax_net_ops;
	net->watchdog_timeo = ADAPTER_TIMEOUT;
	net->mtu = WIMAX_MTU_SIZE;
	adapter->msg_enable = netif_msg_init(msg_level, NETIF_MSG_DRV
					| NETIF_MSG_PROBE | NETIF_MSG_LINK);

	ether_setup(net);
	net->flags |= IFF_NOARP;

	adapter->downloading = true;

	sdio_set_drvdata(func, adapter);

	SET_NETDEV_DEV(net, &func->dev);
	err = register_netdev(net);
	if (err)
		goto regdev_fail;

	netif_carrier_off(net);
	netif_tx_stop_all_queues(net);

	sdio_claim_host(adapter->func);
	err = sdio_enable_func(adapter->func);
	if (err < 0) {
		pr_debug("sdio_enable func error = %d", err);
		goto sdioen_fail;
	}

	err = sdio_claim_irq(adapter->func, adapter_interrupt);
	if (err < 0) {
		pr_debug("sdio_claim_irq = %d", err);
		goto sdioirq_fail;
	}
	sdio_set_block_size(adapter->func, 512);
	sdio_release_host(adapter->func);

	adapter->uwibro_dev.minor = UWBRBDEVMINOR;
	adapter->uwibro_dev.name = "uwibro";
	adapter->uwibro_dev.fops = &uwbr_fops;

	if (misc_register(&adapter->uwibro_dev) != 0) {
		pr_debug("adapter_probe: misc_register() failed");
		goto regchar_fail;
	}

	/* Dummy value for "ifconfig up" for 2.6.24 */
	random_ether_addr(node_id);
	memcpy(net->dev_addr, node_id, sizeof(node_id));

	err = wimax_hw_start(adapter);
	if (err) {
		/* Free the resources and stop the driver processing */
		misc_deregister(&adapter->uwibro_dev);
		pr_debug("wimax_hw_start failed");
		goto regchar_fail;
	}

	return 0;

regchar_fail:
	adapter->halted = true;
	wake_up_interruptible(&adapter->send_event);
	wake_up_interruptible(&adapter->receive_event);
	sdio_claim_host(adapter->func);
	sdio_release_irq(adapter->func);
sdioirq_fail:
	sdio_disable_func(adapter->func);
sdioen_fail:
	sdio_release_host(adapter->func);
	unregister_netdev(adapter->net);
regdev_fail:
	sdio_set_drvdata(func, NULL);
	wimax_hw_remove(adapter);
hwInit_fail:
	free_netdev(net);
alloceth_fail:
	adapter->pdata->g_cfg->card_removed = true;
	adapter->pdata->power(0);
	return err;
}

static void adapter_remove(struct sdio_func *func)
{
	struct net_adapter	*adapter = sdio_get_drvdata(func);

	/* remove adapter from adapters array */

	wake_up_interruptible(&adapter->send_event);
	wake_up_interruptible(&adapter->receive_event);

	if (!adapter) {
		pr_debug("unregistering non-bound device?");
		return;
	}

	if (adapter->media_state == MEDIA_CONNECTED) {
		netif_stop_queue(adapter->net);
		adapter->media_state = MEDIA_DISCONNECTED;
	}

	if (!adapter->removed)
		wimax_hw_stop(adapter);	/* free hw in and out buffer */

	if (adapter->downloading) {
		adapter->removed = true;
		adapter->download_complete = true;
		wake_up_interruptible(&adapter->download_event);
		adapter->modem_resp = true;
		wake_up_interruptible(&adapter->modem_resp_event);
	}

	if (!completion_done(&adapter->wakeup_event))
		complete(&adapter->wakeup_event);

	/* remove control process list */
	control_remove(adapter);
	/*remove hardware interface */
	wimax_hw_remove(adapter);

	misc_deregister(&adapter->uwibro_dev);
	if (adapter->net) {
		unregister_netdev(adapter->net);
		free_netdev(adapter->net);
	}
	adapter->pdata->g_cfg->card_removed = true;

	return;
}

static struct sdio_device_id adapter_table[] = {
	{ SDIO_DEVICE(0x98, 0x1) },
	{ }	/* Terminating entry */
};

/* wimax suspend function */
int wimax_suspend(struct platform_device *pdev, pm_message_t state)
{
	struct wimax732_platform_data	*pdata = pdev->dev.platform_data;

	pr_debug("wimax_suspend");
	if (pdata->g_cfg->card_removed)
		return 0;

	pdata = pdev->dev.platform_data;
	if (!mutex_trylock(&pdata->g_cfg->suspend_mutex)) {
		pr_debug("wimax send processing\n");
		return -EBUSY;
	}
	/* AP active pin LOW */
	pdata->signal_ap_active(0);

	/*
	* VI/Idle setting is controlled by framework.
	* We always set the the pin for Idle
	*/
	if (pdata->g_cfg->wimax_status == WIMAX_STATE_IDLE
		|| pdata->g_cfg->wimax_status == WIMAX_STATE_NORMAL) {
		/* set driver status IDLE */
		pdata->g_cfg->wimax_status = WIMAX_STATE_IDLE;
		pr_debug("WIMAX IDLE");
	} else
		pr_debug("WIMAX STATE NOT CHANGED!!");
	return 0;
}

/* wimax resume function */
int wimax_resume(struct platform_device *pdev)
{
	struct wimax732_platform_data	*pdata = pdev->dev.platform_data;

	pr_debug("wimax_resume");
	if (pdata->g_cfg->card_removed)
		return 0;

	/* AP active pin HIGH */
	pdata->signal_ap_active(1);

	/* wait wakeup noti for 1 sec otherwise suspend again */
	wake_lock_timeout(&pdata->g_cfg->wimax_wake_lock, 1 * HZ);

	mutex_unlock(&pdata->g_cfg->suspend_mutex);
	return 0;
}
static int adapter_suspend(struct device *dev)
{
	pr_debug("adapter_suspend sdio");
	return 0;
}

static int adapter_resume(struct device *dev)
{
	pr_debug("adapter_resume sdio");
	return 0;
}
static const struct dev_pm_ops adapter_pm_ops = {
	.suspend	=	adapter_suspend,
	.resume		=	adapter_resume,
};

static struct sdio_driver adapter_driver = {
	.name		= "C730SDIO",
	.probe		= adapter_probe,
	.remove		= adapter_remove,
	.id_table	= adapter_table,
	.drv = {
		.pm = &adapter_pm_ops,
	},
};

static int wimax_probe(struct platform_device *pdev)
{
	struct wimax732_platform_data	*pdata = pdev->dev.platform_data;
	int error = 0;
	int	i;

	pr_debug("SDIO driver installing... " WIMAX_DRIVER_VERSION_STRING);

	pdata->swmxctl_dev.minor = SWMXGPIOMINOR;
	pdata->swmxctl_dev.name = "swmxctl";
	pdata->swmxctl_dev.fops = &swmx_fops;

	misc_register(&pdata->swmxctl_dev);

	if (error < 0) {
		pr_debug("misc_register() failed");
		return error;
	}
	mutex_init(&pdata->g_cfg->suspend_mutex);

	for (i = 0; i < ARRAY_SIZE(adapter_table); i++)
		adapter_table[i].driver_data =
			(unsigned long) pdev->dev.platform_data;

	/* register SDIO driver */
	error = sdio_register_driver(&adapter_driver);
	if (error < 0) {
		pr_debug("sdio_register_driver() failed");
		return error;
	}

	pdata->g_cfg->card_removed = true;
	pdata->power(0);

	/* initialize wake locks */
	wake_lock_init(&pdata->g_cfg->wimax_wake_lock,
			WAKE_LOCK_SUSPEND, "wimax_wakeup");
	wake_lock_init(&pdata->g_cfg->wimax_rxtx_lock,
			WAKE_LOCK_SUSPEND, "wimax_rxtx");
	wake_lock_init(&pdata->g_cfg->wimax_tx_lock,
			WAKE_LOCK_SUSPEND, "wimax_tx");

	return error;
}

static int wimax_remove(struct platform_device *pdev)
{
	struct wimax732_platform_data	*pdata = pdev->dev.platform_data;
	pr_debug("SDIO driver Uninstall");

	/* destroy wake locks */
	wake_lock_destroy(&pdata->g_cfg->wimax_wake_lock);
	wake_lock_destroy(&pdata->g_cfg->wimax_rxtx_lock);
	wake_lock_destroy(&pdata->g_cfg->wimax_tx_lock);

	sdio_unregister_driver(&adapter_driver);
	misc_deregister(&pdata->swmxctl_dev);
	return 0;
}

static struct platform_driver wimax_driver = {
	.probe          = wimax_probe,
	.remove         = wimax_remove,
	.suspend		= wimax_suspend,
	.resume			= wimax_resume,
	.driver         = {
	.name   = "wimax732_driver",
	}
};

static int __init adapter_init_module(void)
{
	return platform_driver_register(&wimax_driver);
}

static void __exit adapter_deinit_module(void)
{
	platform_driver_unregister(&wimax_driver);
}


module_init(adapter_init_module);
module_exit(adapter_deinit_module);

MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_PARM_DESC(msg_level, "Override default message level");
MODULE_DEVICE_TABLE(sdio, adapter_table);
MODULE_VERSION(WIMAX_DRIVER_VERSION_STRING);
MODULE_LICENSE("GPL");