aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/memstick/host/tifm_ms.c
blob: eb150dfb637f150da1765e096edda10661312dc1 (plain) (blame)
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
/*
 *  TI FlashMedia driver
 *
 *  Copyright (C) 2007 Alex Dubov <oakad@yahoo.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * Special thanks to Carlos Corbacho for providing various MemoryStick cards
 * that made this driver possible.
 *
 */

#include <linux/tifm.h>
#include <linux/memstick.h>
#include <linux/highmem.h>
#include <linux/scatterlist.h>
#include <linux/log2.h>
#include <asm/io.h>

#define DRIVER_NAME "tifm_ms"

static int no_dma;
module_param(no_dma, bool, 0644);

/*
 * Some control bits of TIFM appear to conform to Sony's reference design,
 * so I'm just assuming they all are.
 */

#define TIFM_MS_STAT_DRQ     0x04000
#define TIFM_MS_STAT_MSINT   0x02000
#define TIFM_MS_STAT_RDY     0x01000
#define TIFM_MS_STAT_CRC     0x00200
#define TIFM_MS_STAT_TOE     0x00100
#define TIFM_MS_STAT_EMP     0x00020
#define TIFM_MS_STAT_FUL     0x00010
#define TIFM_MS_STAT_CED     0x00008
#define TIFM_MS_STAT_ERR     0x00004
#define TIFM_MS_STAT_BRQ     0x00002
#define TIFM_MS_STAT_CNK     0x00001

#define TIFM_MS_SYS_DMA      0x10000
#define TIFM_MS_SYS_RESET    0x08000
#define TIFM_MS_SYS_SRAC     0x04000
#define TIFM_MS_SYS_INTEN    0x02000
#define TIFM_MS_SYS_NOCRC    0x01000
#define TIFM_MS_SYS_INTCLR   0x00800
#define TIFM_MS_SYS_MSIEN    0x00400
#define TIFM_MS_SYS_FCLR     0x00200
#define TIFM_MS_SYS_FDIR     0x00100
#define TIFM_MS_SYS_DAM      0x00080
#define TIFM_MS_SYS_DRM      0x00040
#define TIFM_MS_SYS_DRQSL    0x00020
#define TIFM_MS_SYS_REI      0x00010
#define TIFM_MS_SYS_REO      0x00008
#define TIFM_MS_SYS_BSY_MASK 0x00007

#define TIFM_MS_SYS_FIFO     (TIFM_MS_SYS_INTEN | TIFM_MS_SYS_MSIEN \
			      | TIFM_MS_SYS_FCLR | TIFM_MS_SYS_BSY_MASK)

/* Hardware flags */
enum {
	CMD_READY  = 0x01,
	FIFO_READY = 0x02,
	CARD_INT   = 0x04
};

struct tifm_ms {
	struct tifm_dev         *dev;
	struct timer_list       timer;
	struct memstick_request *req;
	unsigned int            mode_mask;
	unsigned int            block_pos;
	unsigned long           timeout_jiffies;
	unsigned char           eject:1,
				use_dma:1;
	unsigned char           cmd_flags;
	unsigned char           io_pos;
	unsigned int            io_word;
};

static unsigned int tifm_ms_read_data(struct tifm_ms *host,
				      unsigned char *buf, unsigned int length)
{
	struct tifm_dev *sock = host->dev;
	unsigned int off = 0;

	while (host->io_pos && length) {
		buf[off++] = host->io_word & 0xff;
		host->io_word >>= 8;
		length--;
		host->io_pos--;
	}

	if (!length)
		return off;

	while (!(TIFM_MS_STAT_EMP & readl(sock->addr + SOCK_MS_STATUS))) {
		if (length < 4)
			break;
		*(unsigned int *)(buf + off) = __raw_readl(sock->addr
							   + SOCK_MS_DATA);
		length -= 4;
		off += 4;
	}

	if (length
	    && !(TIFM_MS_STAT_EMP & readl(sock->addr + SOCK_MS_STATUS))) {
		host->io_word = readl(sock->addr + SOCK_MS_DATA);
		for (host->io_pos = 4; host->io_pos; --host->io_pos) {
			buf[off++] = host->io_word & 0xff;
			host->io_word >>= 8;
			length--;
			if (!length)
				break;
		}
	}

	return off;
}

static unsigned int tifm_ms_write_data(struct tifm_ms *host,
				       unsigned char *buf, unsigned int length)
{
	struct tifm_dev *sock = host->dev;
	unsigned int off = 0;

	if (host->io_pos) {
		while (host->io_pos < 4 && length) {
			host->io_word |=  buf[off++] << (host->io_pos * 8);
			host->io_pos++;
			length--;
		}
	}

	if (host->io_pos == 4
	    && !(TIFM_MS_STAT_FUL & readl(sock->addr + SOCK_MS_STATUS))) {
		writel(TIFM_MS_SYS_FDIR | readl(sock->addr + SOCK_MS_SYSTEM),
		       sock->addr + SOCK_MS_SYSTEM);
		writel(host->io_word, sock->addr + SOCK_MS_DATA);
		host->io_pos = 0;
		host->io_word = 0;
	} else if (host->io_pos) {
		return off;
	}

	if (!length)
		return off;

	while (!(TIFM_MS_STAT_FUL & readl(sock->addr + SOCK_MS_STATUS))) {
		if (length < 4)
			break;
		writel(TIFM_MS_SYS_FDIR | readl(sock->addr + SOCK_MS_SYSTEM),
		       sock->addr + SOCK_MS_SYSTEM);
		__raw_writel(*(unsigned int *)(buf + off),
			     sock->addr + SOCK_MS_DATA);
		length -= 4;
		off += 4;
	}

	switch (length) {
	case 3:
		host->io_word |= buf[off + 2] << 16;
		host->io_pos++;
	case 2:
		host->io_word |= buf[off + 1] << 8;
		host->io_pos++;
	case 1:
		host->io_word |= buf[off];
		host->io_pos++;
	}

	off += host->io_pos;

	return off;
}

static unsigned int tifm_ms_transfer_data(struct tifm_ms *host)
{
	struct tifm_dev *sock = host->dev;
	unsigned int length;
	unsigned int off;
	unsigned int t_size, p_off, p_cnt;
	unsigned char *buf;
	struct page *pg;
	unsigned long flags = 0;

	if (host->req->long_data) {
		length = host->req->sg.length - host->block_pos;
		off = host->req->sg.offset + host->block_pos;
	} else {
		length = host->req->data_len - host->block_pos;
		off = 0;
	}
	dev_dbg(&sock->dev, "fifo data transfer, %d, %d\n", length,
		host->block_pos);

	while (length) {
		if (host->req->long_data) {
			pg = nth_page(sg_page(&host->req->sg),
				      off >> PAGE_SHIFT);
			p_off = offset_in_page(off);
			p_cnt = PAGE_SIZE - p_off;
			p_cnt = min(p_cnt, length);

			local_irq_save(flags);
			buf = kmap_atomic(pg, KM_BIO_SRC_IRQ) + p_off;
		} else {
			buf = host->req->data + host->block_pos;
			p_cnt = host->req->data_len - host->block_pos;
		}

		t_size = host->req->data_dir == WRITE
			 ? tifm_ms_write_data(host, buf, p_cnt)
			 : tifm_ms_read_data(host, buf, p_cnt);

		if (host->req->long_data) {
			kunmap_atomic(buf - p_off, KM_BIO_SRC_IRQ);
			local_irq_restore(flags);
		}

		if (!t_size)
			break;
		host->block_pos += t_size;
		length -= t_size;
		off += t_size;
	}

	dev_dbg(&sock->dev, "fifo data transfer, %d remaining\n", length);
	if (!length && (host->req->data_dir == WRITE)) {
		if (host->io_pos) {
			writel(TIFM_MS_SYS_FDIR
			       | readl(sock->addr + SOCK_MS_SYSTEM),
			       sock->addr + SOCK_MS_SYSTEM);
			writel(host->io_word, sock->addr + SOCK_MS_DATA);
		}
		writel(TIFM_MS_SYS_FDIR
		       | readl(sock->addr + SOCK_MS_SYSTEM),
		       sock->addr + SOCK_MS_SYSTEM);
		writel(0, sock->addr + SOCK_MS_DATA);
	} else {
		readl(sock->addr + SOCK_MS_DATA);
	}

	return length;
}

static int tifm_ms_issue_cmd(struct tifm_ms *host)
{
	struct tifm_dev *sock = host->dev;
	unsigned char *data;
	unsigned int data_len, cmd, sys_param;

	host->cmd_flags = 0;
	host->block_pos = 0;
	host->io_pos = 0;
	host->io_word = 0;
	host->cmd_flags = 0;

	data = host->req->data;

	host->use_dma = !no_dma;

	if (host->req->long_data) {
		data_len = host->req->sg.length;
		if (!is_power_of_2(data_len))
			host->use_dma = 0;
	} else {
		data_len = host->req->data_len;
		host->use_dma = 0;
	}

	writel(TIFM_FIFO_INT_SETALL,
	       sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
	writel(TIFM_FIFO_ENABLE,
	       sock->addr + SOCK_FIFO_CONTROL);

	if (host->use_dma) {
		if (1 != tifm_map_sg(sock, &host->req->sg, 1,
				     host->req->data_dir == READ
				     ? PCI_DMA_FROMDEVICE
				     : PCI_DMA_TODEVICE)) {
			host->req->error = -ENOMEM;
			return host->req->error;
		}
		data_len = sg_dma_len(&host->req->sg);

		writel(ilog2(data_len) - 2,
		       sock->addr + SOCK_FIFO_PAGE_SIZE);
		writel(TIFM_FIFO_INTMASK,
		       sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET);
		sys_param = TIFM_DMA_EN | (1 << 8);
		if (host->req->data_dir == WRITE)
			sys_param |= TIFM_DMA_TX;

		writel(TIFM_FIFO_INTMASK,
		       sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET);

		writel(sg_dma_address(&host->req->sg),
		       sock->addr + SOCK_DMA_ADDRESS);
		writel(sys_param, sock->addr + SOCK_DMA_CONTROL);
	} else {
		writel(host->mode_mask | TIFM_MS_SYS_FIFO,
		       sock->addr + SOCK_MS_SYSTEM);

		writel(TIFM_FIFO_MORE,
		       sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET);
	}

	mod_timer(&host->timer, jiffies + host->timeout_jiffies);
	writel(TIFM_CTRL_LED | readl(sock->addr + SOCK_CONTROL),
	       sock->addr + SOCK_CONTROL);
	host->req->error = 0;

	sys_param = readl(sock->addr + SOCK_MS_SYSTEM);
	sys_param |= TIFM_MS_SYS_INTCLR;

	if (host->use_dma)
		sys_param |= TIFM_MS_SYS_DMA;
	else
		sys_param &= ~TIFM_MS_SYS_DMA;

	writel(sys_param, sock->addr + SOCK_MS_SYSTEM);

	cmd = (host->req->tpc & 0xf) << 12;
	cmd |= data_len;
	writel(cmd, sock->addr + SOCK_MS_COMMAND);

	dev_dbg(&sock->dev, "executing TPC %x, %x\n", cmd, sys_param);
	return 0;
}

static void tifm_ms_complete_cmd(struct tifm_ms *host)
{
	struct tifm_dev *sock = host->dev;
	struct memstick_host *msh = tifm_get_drvdata(sock);
	int rc;

	del_timer(&host->timer);

	host->req->int_reg = readl(sock->addr + SOCK_MS_STATUS) & 0xff;
	host->req->int_reg = (host->req->int_reg & 1)
			     | ((host->req->int_reg << 4) & 0xe0);

	writel(TIFM_FIFO_INT_SETALL,
	       sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
	writel(TIFM_DMA_RESET, sock->addr + SOCK_DMA_CONTROL);

	if (host->use_dma) {
		tifm_unmap_sg(sock, &host->req->sg, 1,
			      host->req->data_dir == READ
			      ? PCI_DMA_FROMDEVICE
			      : PCI_DMA_TODEVICE);
	}

	writel((~TIFM_CTRL_LED) & readl(sock->addr + SOCK_CONTROL),
	       sock->addr + SOCK_CONTROL);

	dev_dbg(&sock->dev, "TPC complete\n");
	do {
		rc = memstick_next_req(msh, &host->req);
	} while (!rc && tifm_ms_issue_cmd(host));
}

static int tifm_ms_check_status(struct tifm_ms *host)
{
	if (!host->req->error) {
		if (!(host->cmd_flags & CMD_READY))
			return 1;
		if (!(host->cmd_flags & FIFO_READY))
			return 1;
		if (host->req->need_card_int
		    && !(host->cmd_flags & CARD_INT))
			return 1;
	}
	return 0;
}

/* Called from interrupt handler */
static void tifm_ms_data_event(struct tifm_dev *sock)
{
	struct tifm_ms *host;
	unsigned int fifo_status = 0, host_status = 0;
	int rc = 1;

	spin_lock(&sock->lock);
	host = memstick_priv((struct memstick_host *)tifm_get_drvdata(sock));
	fifo_status = readl(sock->addr + SOCK_DMA_FIFO_STATUS);
	host_status = readl(sock->addr + SOCK_MS_STATUS);
	dev_dbg(&sock->dev,
		"data event: fifo_status %x, host_status %x, flags %x\n",
		fifo_status, host_status, host->cmd_flags);

	if (host->req) {
		if (host->use_dma && (fifo_status & 1)) {
			host->cmd_flags |= FIFO_READY;
			rc = tifm_ms_check_status(host);
		}
		if (!host->use_dma && (fifo_status & TIFM_FIFO_MORE)) {
			if (!tifm_ms_transfer_data(host)) {
				host->cmd_flags |= FIFO_READY;
				rc = tifm_ms_check_status(host);
			}
		}
	}

	writel(fifo_status, sock->addr + SOCK_DMA_FIFO_STATUS);
	if (!rc)
		tifm_ms_complete_cmd(host);

	spin_unlock(&sock->lock);
}


/* Called from interrupt handler */
static void tifm_ms_card_event(struct tifm_dev *sock)
{
	struct tifm_ms *host;
	unsigned int host_status = 0;
	int rc = 1;

	spin_lock(&sock->lock);
	host = memstick_priv((struct memstick_host *)tifm_get_drvdata(sock));
	host_status = readl(sock->addr + SOCK_MS_STATUS);
	dev_dbg(&sock->dev, "host event: host_status %x, flags %x\n",
		host_status, host->cmd_flags);

	if (host->req) {
		if (host_status & TIFM_MS_STAT_TOE)
			host->req->error = -ETIME;
		else if (host_status & TIFM_MS_STAT_CRC)
			host->req->error = -EILSEQ;

		if (host_status & TIFM_MS_STAT_RDY)
			host->cmd_flags |= CMD_READY;

		if (host_status & TIFM_MS_STAT_MSINT)
			host->cmd_flags |= CARD_INT;

		rc = tifm_ms_check_status(host);

	}

	writel(TIFM_MS_SYS_INTCLR | readl(sock->addr + SOCK_MS_SYSTEM),
	       sock->addr + SOCK_MS_SYSTEM);

	if (!rc)
		tifm_ms_complete_cmd(host);

	spin_unlock(&sock->lock);
	return;
}

static void tifm_ms_request(struct memstick_host *msh)
{
	struct tifm_ms *host = memstick_priv(msh);
	struct tifm_dev *sock = host->dev;
	unsigned long flags;
	int rc;

	spin_lock_irqsave(&sock->lock, flags);
	if (host->req) {
		printk(KERN_ERR "%s : unfinished request detected\n",
		       sock->dev.bus_id);
		spin_unlock_irqrestore(&sock->lock, flags);
		tifm_eject(host->dev);
		return;
	}

	if (host->eject) {
		do {
			rc = memstick_next_req(msh, &host->req);
			if (!rc)
				host->req->error = -ETIME;
		} while (!rc);
		spin_unlock_irqrestore(&sock->lock, flags);
		return;
	}

	do {
		rc = memstick_next_req(msh, &host->req);
	} while (!rc && tifm_ms_issue_cmd(host));

	spin_unlock_irqrestore(&sock->lock, flags);
	return;
}

static void tifm_ms_set_param(struct memstick_host *msh,
			      enum memstick_param param,
			      int value)
{
	struct tifm_ms *host = memstick_priv(msh);
	struct tifm_dev *sock = host->dev;
	unsigned long flags;

	spin_lock_irqsave(&sock->lock, flags);

	switch (param) {
	case MEMSTICK_POWER:
		/* also affected by media detection mechanism */
		if (value == MEMSTICK_POWER_ON) {
			host->mode_mask = TIFM_MS_SYS_SRAC | TIFM_MS_SYS_REI;
			writel(TIFM_MS_SYS_RESET, sock->addr + SOCK_MS_SYSTEM);
			writel(TIFM_MS_SYS_FCLR | TIFM_MS_SYS_INTCLR,
			       sock->addr + SOCK_MS_SYSTEM);
			writel(0xffffffff, sock->addr + SOCK_MS_STATUS);
		} else if (value == MEMSTICK_POWER_OFF) {
			writel(TIFM_MS_SYS_FCLR | TIFM_MS_SYS_INTCLR,
			       sock->addr + SOCK_MS_SYSTEM);
			writel(0xffffffff, sock->addr + SOCK_MS_STATUS);
		}
		break;
	case MEMSTICK_INTERFACE:
		if (value == MEMSTICK_SERIAL) {
			host->mode_mask = TIFM_MS_SYS_SRAC | TIFM_MS_SYS_REI;
			writel((~TIFM_CTRL_FAST_CLK)
			       & readl(sock->addr + SOCK_CONTROL),
			       sock->addr + SOCK_CONTROL);
		} else if (value == MEMSTICK_PAR4) {
			host->mode_mask = 0;
			writel(TIFM_CTRL_FAST_CLK
			       | readl(sock->addr + SOCK_CONTROL),
			       sock->addr + SOCK_CONTROL);
		}
		break;
	};

	spin_unlock_irqrestore(&sock->lock, flags);
}

static void tifm_ms_abort(unsigned long data)
{
	struct tifm_ms *host = (struct tifm_ms *)data;

	dev_dbg(&host->dev->dev, "status %x\n",
		readl(host->dev->addr + SOCK_MS_STATUS));
	printk(KERN_ERR
	       "%s : card failed to respond for a long period of time "
	       "(%x, %x)\n",
	       host->dev->dev.bus_id, host->req ? host->req->tpc : 0,
	       host->cmd_flags);

	tifm_eject(host->dev);
}

static int tifm_ms_probe(struct tifm_dev *sock)
{
	struct memstick_host *msh;
	struct tifm_ms *host;
	int rc = -EIO;

	if (!(TIFM_SOCK_STATE_OCCUPIED
	      & readl(sock->addr + SOCK_PRESENT_STATE))) {
		printk(KERN_WARNING "%s : card gone, unexpectedly\n",
		       sock->dev.bus_id);
		return rc;
	}

	msh = memstick_alloc_host(sizeof(struct tifm_ms), &sock->dev);
	if (!msh)
		return -ENOMEM;

	host = memstick_priv(msh);
	tifm_set_drvdata(sock, msh);
	host->dev = sock;
	host->timeout_jiffies = msecs_to_jiffies(1000);

	setup_timer(&host->timer, tifm_ms_abort, (unsigned long)host);

	msh->request = tifm_ms_request;
	msh->set_param = tifm_ms_set_param;
	sock->card_event = tifm_ms_card_event;
	sock->data_event = tifm_ms_data_event;
	if (tifm_has_ms_pif(sock))
		msh->caps |= MEMSTICK_CAP_PAR4;

	rc = memstick_add_host(msh);
	if (!rc)
		return 0;

	memstick_free_host(msh);
	return rc;
}

static void tifm_ms_remove(struct tifm_dev *sock)
{
	struct memstick_host *msh = tifm_get_drvdata(sock);
	struct tifm_ms *host = memstick_priv(msh);
	int rc = 0;
	unsigned long flags;

	spin_lock_irqsave(&sock->lock, flags);
	host->eject = 1;
	if (host->req) {
		del_timer(&host->timer);
		writel(TIFM_FIFO_INT_SETALL,
		       sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
		writel(TIFM_DMA_RESET, sock->addr + SOCK_DMA_CONTROL);
		if (host->use_dma)
			tifm_unmap_sg(sock, &host->req->sg, 1,
				      host->req->data_dir == READ
				      ? PCI_DMA_TODEVICE
				      : PCI_DMA_FROMDEVICE);
		host->req->error = -ETIME;

		do {
			rc = memstick_next_req(msh, &host->req);
			if (!rc)
				host->req->error = -ETIME;
		} while (!rc);
	}
	spin_unlock_irqrestore(&sock->lock, flags);

	memstick_remove_host(msh);
	memstick_free_host(msh);
}

#ifdef CONFIG_PM

static int tifm_ms_suspend(struct tifm_dev *sock, pm_message_t state)
{
	struct memstick_host *msh = tifm_get_drvdata(sock);

	memstick_suspend_host(msh);
	return 0;
}

static int tifm_ms_resume(struct tifm_dev *sock)
{
	struct memstick_host *msh = tifm_get_drvdata(sock);

	memstick_resume_host(msh);
	return 0;
}

#else

#define tifm_ms_suspend NULL
#define tifm_ms_resume NULL

#endif /* CONFIG_PM */

static struct tifm_device_id tifm_ms_id_tbl[] = {
	{ TIFM_TYPE_MS }, { 0 }
};

static struct tifm_driver tifm_ms_driver = {
	.driver = {
		.name  = DRIVER_NAME,
		.owner = THIS_MODULE
	},
	.id_table = tifm_ms_id_tbl,
	.probe    = tifm_ms_probe,
	.remove   = tifm_ms_remove,
	.suspend  = tifm_ms_suspend,
	.resume   = tifm_ms_resume
};

static int __init tifm_ms_init(void)
{
	return tifm_register_driver(&tifm_ms_driver);
}

static void __exit tifm_ms_exit(void)
{
	tifm_unregister_driver(&tifm_ms_driver);
}

MODULE_AUTHOR("Alex Dubov");
MODULE_DESCRIPTION("TI FlashMedia MemoryStick driver");
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(tifm, tifm_ms_id_tbl);

module_init(tifm_ms_init);
module_exit(tifm_ms_exit);