summaryrefslogtreecommitdiff
path: root/packages/linux/linux-rp-2.6.22/tmio-nand-r8.patch
blob: a71fd114a8d3460e8f0d16109857eeadbb995cd5 (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
 drivers/mtd/nand/Kconfig  |    7 +
 drivers/mtd/nand/Makefile |    1 +
 drivers/mtd/nand/tmio.c   |  554 +++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 562 insertions(+), 0 deletions(-)

diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index f1d60b6..b9c8796 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -69,6 +69,13 @@ config MTD_NAND_AMS_DELTA
 	help
 	  Support for NAND flash on Amstrad E3 (Delta).
 
+config MTD_NAND_TMIO
+	tristate "NAND Flash device on Toshiba Mobile IO Controller"
+	depends on MTD_NAND && TOSHIBA_TC6393XB
+	help
+	  Support for NAND flash connected to a Toshiba Mobile IO
+	  Controller in some PDAs, including the Sharp SL6000x.
+
 config MTD_NAND_TOTO
 	tristate "NAND Flash device on TOTO board"
 	depends on ARCH_OMAP && BROKEN
diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile
index edba1db..64f24e1 100644
--- a/drivers/mtd/nand/Makefile
+++ b/drivers/mtd/nand/Makefile
@@ -27,5 +27,6 @@ obj-$(CONFIG_MTD_NAND_AT91)		+= at91_nand.o
 obj-$(CONFIG_MTD_NAND_CM_X270)		+= cmx270_nand.o
 obj-$(CONFIG_MTD_NAND_BASLER_EXCITE)	+= excite_nandflash.o
 obj-$(CONFIG_MTD_NAND_PLATFORM)		+= plat_nand.o
+obj-$(CONFIG_MTD_NAND_TMIO)		+= tmio.o
 
 nand-objs := nand_base.o nand_bbt.o
diff --git a/drivers/mtd/nand/tmio.c b/drivers/mtd/nand/tmio.c
new file mode 100644
index 0000000..d196553
--- /dev/null
+++ b/drivers/mtd/nand/tmio.c
@@ -0,0 +1,554 @@
+/*
+ * A device driver for NAND flash connected to a Toshiba Mobile IO
+ * controller. This is known to work with the following variants:
+ *	TC6393XB revision 3
+ *
+ * Maintainer: Chris Humbert <mahadri+mtd@drigon.com>
+ *
+ * Copyright (C) 2005 Chris Humbert
+ * Copyright (C) 2005 Dirk Opfer
+ * Copyright (C) 2004 SHARP
+ * Copyright (C) 2002 Lineo Japan, Inc.
+ * Copyright (C) Ian Molton and Sebastian Carlier
+ *
+ * Based on Sharp's NAND driver, sharp_sl_tc6393.c
+ *
+ * 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.
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/delay.h>
+#include <linux/wait.h>
+#include <linux/ioport.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/nand.h>
+#include <linux/mtd/nand_ecc.h>
+#include <linux/mtd/partitions.h>
+#include <asm/io.h>
+#include <asm/hardware/tmio.h>
+
+#include <linux/interrupt.h>
+
+#define mtd_printk(level, mtd, format, arg...)	\
+	printk (level "%s: " format, mtd->name, ## arg)
+#define mtd_warn(mtd, format, arg...)		\
+	mtd_printk (KERN_WARNING, mtd, format, ## arg)
+
+/*--------------------------------------------------------------------------*/
+
+/* tmio_nfcr.mode Register Command List */
+#define FCR_MODE_DATA		0x94	// Data Data_Mode
+#define FCR_MODE_COMMAND	0x95	// Data Command_Mode
+#define FCR_MODE_ADDRESS	0x96	// Data Address_Mode
+
+#define FCR_MODE_HWECC_CALC	0xB4	// HW-ECC Data
+#define FCR_MODE_HWECC_RESULT	0xD4	// HW-ECC Calculation Result Read_Mode
+#define FCR_MODE_HWECC_RESET	0xF4	// HW-ECC Reset
+
+#define FCR_MODE_POWER_ON	0x0C	// Power Supply ON  to SSFDC card
+#define FCR_MODE_POWER_OFF	0x08	// Power Supply OFF to SSFDC card
+
+#define FCR_MODE_LED_OFF	0x00	// LED OFF
+#define FCR_MODE_LED_ON		0x04	// LED ON
+
+#define FCR_MODE_EJECT_ON	0x68	// Ejection Demand from Penguin is Advanced
+#define FCR_MODE_EJECT_OFF	0x08	// Ejection Demand from Penguin is Not Advanced
+
+#define FCR_MODE_LOCK		0x6C	// Operates By Lock_Mode. Ejection Switch is Invalid
+#define FCR_MODE_UNLOCK		0x0C	// Operates By UnLock_Mode.Ejection Switch is Effective
+
+#define FCR_MODE_CONTROLLER_ID	0x40	// Controller ID Read
+#define FCR_MODE_STANDBY	0x00	// SSFDC card Changes Standby State
+
+#define FCR_MODE_WE		0x80
+#define FCR_MODE_ECC1		0x40
+#define FCR_MODE_ECC0		0x20
+#define FCR_MODE_CE		0x10
+#define FCR_MODE_PCNT1		0x08
+#define FCR_MODE_PCNT0		0x04
+#define FCR_MODE_ALE		0x02
+#define FCR_MODE_CLE		0x01
+
+#define FCR_STATUS_BUSY		0x80
+
+/*
+ * NAND Flash Host Controller Configuration Register
+ */
+struct tmio_nfhccr {
+	u8 x00[4];
+	u16	command;	/* 0x04 Command				*/
+	u8 x01[0x0a];
+	u16	base[2];	/* 0x10 NAND Flash Control Reg Base Addr*/
+	u8 x02[0x29];
+	u8	intp;		/* 0x3d Interrupt Pin			*/
+	u8 x03[0x0a];
+	u8	inte;		/* 0x48 Interrupt Enable		*/
+	u8 x04;
+	u8	ec;		/* 0x4a Event Control			*/
+	u8 x05;
+	u8	icc;		/* 0x4c Internal Clock Control		*/
+	u8 x06[0x0e];
+	u8	eccc;		/* 0x5b ECC Control			*/
+	u8 x07[4];
+	u8	nftc;		/* 0x60 NAND Flash Transaction Control	*/
+	u8	nfm;		/* 0x61 NAND Flash Monitor		*/
+	u8	nfpsc;		/* 0x62 NAND Flash Power Supply Control	*/
+	u8	nfdc;		/* 0x63 NAND Flash Detect Control	*/
+	u8 x08[0x9c];
+} __attribute__ ((packed));
+
+/*
+ * NAND Flash Control Register
+ */
+struct tmio_nfcr {
+union {
+	u8	u8;		/* 0x00 Data Register			*/
+	u16	u16;
+	u32	u32;
+} __attribute__ ((packed));
+	u8	mode;		/* 0x04 Mode Register			*/
+	u8	status;		/* 0x05 Status Register			*/
+	u8	isr;		/* 0x06 Interrupt Status Register	*/
+	u8	imr;		/* 0x07 Interrupt Mask Register		*/
+} __attribute__ ((packed));
+
+struct tmio_nand {
+	struct mtd_info			mtd;
+	struct nand_chip		chip;
+
+	struct tmio_nfhccr __iomem *	ccr;
+	struct tmio_nfcr __iomem *	fcr;
+
+	unsigned int			irq;
+
+	/* for tmio_nand_read_byte */
+	u8				read;
+	unsigned			read_good:1;
+};
+
+#define mtd_to_tmio(m)			container_of(m, struct tmio_nand, mtd)
+
+/*--------------------------------------------------------------------------*/
+
+static void tmio_nand_hwcontrol(struct mtd_info *mtd, int cmd,
+				   unsigned int ctrl)
+{
+	struct tmio_nand *tmio = mtd_to_tmio (mtd);
+	struct tmio_nfcr __iomem *fcr = tmio->fcr;
+	struct nand_chip *chip = mtd->priv;
+
+	if (ctrl & NAND_CTRL_CHANGE) {
+		u8 mode;
+
+		if (ctrl & NAND_NCE) {
+			mode = FCR_MODE_DATA;
+
+			if (ctrl & NAND_CLE)
+				mode |=  FCR_MODE_CLE;
+			else
+				mode &= ~FCR_MODE_CLE;
+
+			if (ctrl & NAND_ALE)
+				mode |=  FCR_MODE_ALE;
+			else
+				mode &= ~FCR_MODE_ALE;
+		} else {
+			mode = FCR_MODE_STANDBY;
+		}
+
+		iowrite8 (mode, &fcr->mode);
+		tmio->read_good = 0;
+	}
+
+	if (cmd != NAND_CMD_NONE)
+		writeb(cmd, chip->IO_ADDR_W);
+}
+
+static int tmio_nand_dev_ready (struct mtd_info* mtd)
+{
+	struct tmio_nand*		tmio	= mtd_to_tmio (mtd);
+	struct tmio_nfcr __iomem *	fcr	= tmio->fcr;
+
+	return !(ioread8 (&fcr->status) & FCR_STATUS_BUSY);
+}
+
+static irqreturn_t tmio_irq (int irq, void *__tmio)
+{
+	struct tmio_nand*		tmio	= __tmio;
+	struct nand_chip*		this	= &tmio->chip;
+	struct tmio_nfcr __iomem *	fcr	= tmio->fcr;
+
+	/* disable RDYREQ interrupt */
+	iowrite8 (0x00,	&fcr->imr);
+
+	if (unlikely (!waitqueue_active (&this->controller->wq)))
+		printk (KERN_WARNING TMIO_NAME_NAND ": spurious interrupt\n");
+
+	wake_up (&this->controller->wq);
+	return IRQ_HANDLED;
+}
+
+/*
+ * The TMIO core has a RDYREQ interrupt on the posedge of #SMRB.
+ * This interrupt is normally disabled, but for long operations like
+ * erase and write, we enable it to wake us up.  The irq handler
+ * disables the interrupt.
+ */
+static int
+tmio_nand_wait (struct mtd_info *mtd, struct nand_chip *this)
+{
+	struct tmio_nand*		tmio	= mtd_to_tmio (mtd);
+	struct tmio_nfcr __iomem *	fcr	= tmio->fcr;
+	long				timeout;
+
+	/* enable RDYREQ interrupt */
+	iowrite8 (0x0f,	&fcr->isr);
+	iowrite8 (0x81,	&fcr->imr);
+
+	timeout = wait_event_timeout (this->controller->wq, tmio_nand_dev_ready (mtd),
+			msecs_to_jiffies (this->state == FL_ERASING ? 400 : 20));
+
+	if (unlikely (!tmio_nand_dev_ready (mtd))) {
+		iowrite8 (0x00,	&fcr->imr);
+		mtd_warn (mtd, "still busy with %s after %d ms\n",
+				this->state == FL_ERASING ? "erase" : "program",
+				this->state == FL_ERASING ? 400 : 20);
+
+	} else if (unlikely (!timeout)) {
+		iowrite8 (0x00,	&fcr->imr);
+		mtd_warn (mtd, "timeout waiting for interrupt\n");
+	}
+
+	this->cmdfunc (mtd, NAND_CMD_STATUS, -1, -1);
+	return this->read_byte (mtd);
+}
+
+/*
+ * The TMIO controller combines two 8-bit data bytes into one 16-bit
+ * word. This function separates them so nand_base.c works as expected,
+ * especially its NAND_CMD_READID routines.
+ *
+ * To prevent stale data from being read, tmio_nand_hwcontrol() clears
+ * tmio->read_good.
+ */
+static u_char tmio_nand_read_byte (struct mtd_info *mtd)
+{
+	struct tmio_nand*		tmio	= mtd_to_tmio (mtd);
+	struct tmio_nfcr __iomem *	fcr	= tmio->fcr;
+	unsigned int			data;
+
+	if (tmio->read_good--)
+		return tmio->read;
+
+	data		= ioread16 (&fcr->u16);
+	tmio->read	= data >> 8;
+	return data;
+}
+
+/*
+ * The TMIO controller converts an 8-bit NAND interface to a 16-bit
+ * bus interface, so all data reads and writes must be 16-bit wide.
+ * Thus, we implement 16-bit versions of the read, write, and verify
+ * buffer functions.
+ */
+static void
+tmio_nand_write_buf (struct mtd_info *mtd, const u_char *buf, int len)
+{
+	struct tmio_nand*		tmio	= mtd_to_tmio (mtd);
+	struct tmio_nfcr __iomem *	fcr	= tmio->fcr;
+
+	iowrite16_rep (&fcr->u16, buf, len >> 1);
+}
+
+static void tmio_nand_read_buf (struct mtd_info *mtd, u_char *buf, int len)
+{
+	struct tmio_nand*		tmio	= mtd_to_tmio (mtd);
+	struct tmio_nfcr __iomem *	fcr	= tmio->fcr;
+
+	ioread16_rep (&fcr->u16, buf, len >> 1);
+}
+
+static int
+tmio_nand_verify_buf (struct mtd_info *mtd, const u_char *buf, int len)
+{
+	struct tmio_nand*		tmio	= mtd_to_tmio (mtd);
+	struct tmio_nfcr __iomem *	fcr	= tmio->fcr;
+	u16*				p	= (u16*) buf;
+
+	for (len >>= 1; len; len--)
+		if (*(p++) != ioread16 (&fcr->u16))
+			return -EFAULT;
+	return 0;
+}
+
+static void tmio_nand_enable_hwecc (struct mtd_info* mtd, int mode)
+{
+	struct tmio_nand*		tmio	= mtd_to_tmio (mtd);
+	struct tmio_nfcr __iomem *	fcr	= tmio->fcr;
+
+	iowrite8 (FCR_MODE_HWECC_RESET, &fcr->mode);
+	ioread8 (&fcr->u8);	/* dummy read */
+	iowrite8 (FCR_MODE_HWECC_CALC, &fcr->mode);
+}
+
+static int tmio_nand_calculate_ecc (struct mtd_info* mtd, const u_char* dat,
+							u_char* ecc_code)
+{
+	struct tmio_nand*		tmio	= mtd_to_tmio (mtd);
+	struct tmio_nfcr __iomem *	fcr	= tmio->fcr;
+	unsigned int			ecc;
+
+	iowrite8 (FCR_MODE_HWECC_RESULT, &fcr->mode);
+
+	ecc = ioread16 (&fcr->u16);
+	ecc_code[1] = ecc;	// 000-255 LP7-0
+	ecc_code[0] = ecc >> 8;	// 000-255 LP15-8
+	ecc = ioread16 (&fcr->u16);
+	ecc_code[2] = ecc;	// 000-255 CP5-0,11b
+	ecc_code[4] = ecc >> 8;	// 256-511 LP7-0
+	ecc = ioread16 (&fcr->u16);
+	ecc_code[3] = ecc;	// 256-511 LP15-8
+	ecc_code[5] = ecc >> 8;	// 256-511 CP5-0,11b
+
+	iowrite8 (FCR_MODE_DATA, &fcr->mode);
+	return 0;
+}
+
+static void tmio_hw_init (struct device *dev, struct tmio_nand *tmio)
+{
+	struct resource*		nfcr	= tmio_resource_control (dev);
+	struct tmio_device*		tdev	= dev_to_tdev (dev);
+	struct tmio_nfhccr __iomem *	ccr	= tmio->ccr;
+	struct tmio_nfcr __iomem *	fcr	= tmio->fcr;
+	unsigned long			base;
+
+	/* (89h) SMD Buffer ON By TC6393XB SystemConfig gpibfc1 */
+	tdev->ops->clock (dev, 1);
+	tdev->ops->function (dev, 1);
+
+	/* (4Ch) CLKRUN Enable    1st spcrunc */
+	iowrite8 (0x81,			&ccr->icc);
+
+	/* (10h)BaseAddress    0x1000 spba.spba2 */
+	base = nfcr->start - tdev->iomem->start;
+	iowrite16 (base,		ccr->base + 0);
+	iowrite16 (base >> 16,		ccr->base + 1);
+
+	/* (04h)Command Register I/O spcmd */
+	iowrite8 (0x02,			&ccr->command);
+
+	/* (62h) Power Supply Control ssmpwc */
+	/* HardPowerOFF - SuspendOFF - PowerSupplyWait_4MS */
+	iowrite8 (0x02,			&ccr->nfpsc);
+
+	/* (63h) Detect Control ssmdtc */
+	iowrite8 (0x02,			&ccr->nfdc);
+
+	/* Interrupt status register clear sintst */
+	iowrite8 (0x0f,			&fcr->isr);
+
+	/* After power supply, Media are reset smode */
+	iowrite8 (FCR_MODE_POWER_ON,	&fcr->mode);
+	iowrite8 (FCR_MODE_COMMAND,	&fcr->mode);
+	iowrite8 (NAND_CMD_RESET,	&fcr->u8);
+
+	/* Standby Mode smode */
+	iowrite8 (FCR_MODE_STANDBY,	&fcr->mode);
+
+	mdelay (5);
+}
+
+static void tmio_hw_stop (struct device *dev, struct tmio_nand *tmio)
+{
+	struct tmio_device*		tdev	= dev_to_tdev (dev);
+	struct tmio_nfcr __iomem *	fcr	= tmio->fcr;
+
+	iowrite8 (FCR_MODE_POWER_OFF,	&fcr->mode);
+	tdev->ops->function (dev, 0);
+	tdev->ops->clock (dev, 0);
+}
+
+/*--------------------------------------------------------------------------*/
+
+#ifdef CONFIG_MTD_PARTITIONS
+static const char *part_probes[] = { "cmdlinepart", NULL };
+#endif
+
+static int tmio_probe (struct device *dev)
+{
+	struct tmio_device*		tdev	= dev_to_tdev (dev);
+	struct tmio_nand_platform_data*	tnpd	= dev->platform_data;
+	struct resource*		ccr	= tmio_resource_config (dev);
+	struct resource*		fcr	= tmio_resource_control (dev);
+	struct resource*		irq	= tmio_resource_irq (dev);
+	struct tmio_nand*		tmio;
+	struct mtd_info*		mtd;
+	struct nand_chip*		this;
+	struct mtd_partition*		parts;
+	int				nbparts = 0;
+	int				retval;
+
+	if (!tnpd)
+		return -EINVAL;
+
+	retval = request_resource (tdev->iomem, ccr);
+	if (retval)
+		goto err_request_ccr;
+
+	retval = request_resource (tdev->iomem, fcr);
+	if (retval)
+		goto err_request_fcr;
+
+	tmio = kzalloc (sizeof *tmio, GFP_KERNEL);
+	if (!tmio) {
+		retval = -ENOMEM;
+		goto err_kzalloc;
+	}
+
+	dev_set_drvdata (dev, tmio);
+	mtd		= &tmio->mtd;
+	this		= &tmio->chip;
+	mtd->priv	= this;
+	mtd->name	= TMIO_NAME_NAND;
+
+	tmio->ccr = ioremap (ccr->start, ccr->end - ccr->start + 1);
+	if (!tmio->ccr) {
+		retval = -EIO;
+		goto err_iomap_ccr;
+	}
+
+	tmio->fcr = ioremap (fcr->start, fcr->end - fcr->start + 1);
+	if (!tmio->fcr) {
+		retval = -EIO;
+		goto err_iomap_fcr;
+	}
+
+	tmio_hw_init (dev, tmio);
+
+	/* Set address of NAND IO lines */
+	this->IO_ADDR_R		= tmio->fcr;
+	this->IO_ADDR_W		= tmio->fcr;
+
+	/* Set address of hardware control function */
+	this->cmd_ctrl		= tmio_nand_hwcontrol;
+	this->dev_ready		= tmio_nand_dev_ready;
+	this->read_byte		= tmio_nand_read_byte;
+	this->write_buf		= tmio_nand_write_buf;
+	this->read_buf		= tmio_nand_read_buf;
+	this->verify_buf	= tmio_nand_verify_buf;
+
+	/* set eccmode using hardware ECC */
+	this->ecc.mode		= NAND_ECC_HW;
+	this->ecc.size 		= 512;
+	this->ecc.bytes 	= 6;
+	this->ecc.hwctl		= tmio_nand_enable_hwecc;
+	this->ecc.calculate	= tmio_nand_calculate_ecc;
+	this->ecc.correct	= nand_correct_data;
+	this->badblock_pattern	= tnpd->badblock_pattern;
+
+	/* 15 us command delay time */
+	this->chip_delay	= 15;
+
+	if (irq->start) {
+		retval = request_irq (irq->start, &tmio_irq,
+					IRQF_DISABLED, irq->name, tmio);
+		if (!retval) {
+			tmio->irq	= irq->start;
+			this->waitfunc	= tmio_nand_wait;
+		} else
+			mtd_warn (mtd, "request_irq error %d\n", retval);
+	}
+
+	/* Scan to find existence of the device */
+	if (nand_scan (mtd, 1)) {
+		retval = -ENODEV;
+		goto err_scan;
+	}
+
+	/* Register the partitions */
+#ifdef CONFIG_MTD_PARTITIONS
+	nbparts = parse_mtd_partitions (mtd, part_probes, &parts, 0);
+#endif
+	if (nbparts <= 0) {
+		parts	= tnpd->partition;
+		nbparts	= tnpd->num_partitions;
+	}
+
+	add_mtd_partitions (mtd, parts, nbparts);
+	return 0;
+
+err_scan:
+	if (tmio->irq)
+		free_irq (tmio->irq, tmio);
+	tmio_hw_stop (dev, tmio);
+	iounmap (tmio->fcr);
+err_iomap_fcr:
+	iounmap (tmio->ccr);
+err_iomap_ccr:
+	kfree (tmio);
+err_kzalloc:
+	release_resource (fcr);
+err_request_fcr:
+	release_resource (ccr);
+err_request_ccr:
+	return retval;
+}
+
+static int tmio_remove (struct device *dev)
+{
+	struct tmio_nand*		tmio	= dev_get_drvdata (dev);
+
+	nand_release (&tmio->mtd);
+	if (tmio->irq)
+		free_irq (tmio->irq, tmio);
+	tmio_hw_stop (dev, tmio);
+	iounmap (tmio->fcr);
+	iounmap (tmio->ccr);
+	kfree (tmio);
+	release_resource (tmio_resource_control (dev));
+	release_resource (tmio_resource_config (dev));
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static int tmio_suspend (struct device *dev, pm_message_t state)
+{
+	tmio_hw_stop (dev, dev_get_drvdata (dev));
+	return 0;
+}
+
+static int tmio_resume (struct device *dev)
+{
+	tmio_hw_init (dev, dev_get_drvdata (dev));
+	return 0;
+}
+#endif
+
+static struct device_driver tmio_driver = {
+	.name		= TMIO_NAME_NAND,
+	.bus		= &tmio_bus_type,
+	.probe		= tmio_probe,
+	.remove		= tmio_remove,
+#ifdef CONFIG_PM
+	.suspend	= tmio_suspend,
+	.resume		= tmio_resume,
+#endif
+};
+
+static int __init tmio_init (void) {
+	return driver_register (&tmio_driver);
+}
+
+static void __exit tmio_exit (void) {
+	driver_unregister (&tmio_driver);
+}
+
+module_init (tmio_init);
+module_exit (tmio_exit);
+
+MODULE_LICENSE ("GPL");
+MODULE_AUTHOR ("Dirk Opfer, Chris Humbert");
+MODULE_DESCRIPTION ("NAND flash driver on Toshiba Mobile IO controller");