aboutsummaryrefslogtreecommitdiff
path: root/drivers/video/omap2/displays/panel-acx565akm.c
blob: 1f8eb70e2937bbcb101d14ffe9b7238bad79b570 (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
/*
 * Support for ACX565AKM LCD Panel used on Nokia N900
 *
 * Copyright (C) 2010 Nokia Corporation
 *
 * Original Driver Author: Imre Deak <imre.deak@nokia.com>
 * Based on panel-generic.c by Tomi Valkeinen <tomi.valkeinen@nokia.com>
 * Adapted to new DSS2 framework: Roger Quadros <roger.quadros@nokia.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.
 *
 * 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, see <http://www.gnu.org/licenses/>.
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/spi/spi.h>
#include <linux/jiffies.h>
#include <linux/sched.h>
#include <linux/backlight.h>
#include <linux/fb.h>

#include <plat/display.h>

#define MIPID_CMD_READ_DISP_ID		0x04
#define MIPID_CMD_READ_RED		0x06
#define MIPID_CMD_READ_GREEN		0x07
#define MIPID_CMD_READ_BLUE		0x08
#define MIPID_CMD_READ_DISP_STATUS	0x09
#define MIPID_CMD_RDDSDR		0x0F
#define MIPID_CMD_SLEEP_IN		0x10
#define MIPID_CMD_SLEEP_OUT		0x11
#define MIPID_CMD_DISP_OFF		0x28
#define MIPID_CMD_DISP_ON		0x29
#define MIPID_CMD_WRITE_DISP_BRIGHTNESS	0x51
#define MIPID_CMD_READ_DISP_BRIGHTNESS	0x52
#define MIPID_CMD_WRITE_CTRL_DISP	0x53

#define CTRL_DISP_BRIGHTNESS_CTRL_ON	(1 << 5)
#define CTRL_DISP_AMBIENT_LIGHT_CTRL_ON	(1 << 4)
#define CTRL_DISP_BACKLIGHT_ON		(1 << 2)
#define CTRL_DISP_AUTO_BRIGHTNESS_ON	(1 << 1)

#define MIPID_CMD_READ_CTRL_DISP	0x54
#define MIPID_CMD_WRITE_CABC		0x55
#define MIPID_CMD_READ_CABC		0x56

#define MIPID_VER_LPH8923		3
#define MIPID_VER_LS041Y3		4
#define MIPID_VER_L4F00311		8
#define MIPID_VER_ACX565AKM		9

struct acx565akm_device {
	char		*name;
	int		enabled;
	int		model;
	int		revision;
	u8		display_id[3];
	unsigned	has_bc:1;
	unsigned	has_cabc:1;
	unsigned	cabc_mode;
	unsigned long	hw_guard_end;		/* next value of jiffies
						   when we can issue the
						   next sleep in/out command */
	unsigned long	hw_guard_wait;		/* max guard time in jiffies */

	struct spi_device	*spi;
	struct mutex		mutex;

	struct omap_dss_device	*dssdev;
	struct backlight_device *bl_dev;
};

static struct acx565akm_device acx_dev;
static int acx565akm_bl_update_status(struct backlight_device *dev);

/*--------------------MIPID interface-----------------------------*/

static void acx565akm_transfer(struct acx565akm_device *md, int cmd,
			      const u8 *wbuf, int wlen, u8 *rbuf, int rlen)
{
	struct spi_message	m;
	struct spi_transfer	*x, xfer[5];
	int			r;

	BUG_ON(md->spi == NULL);

	spi_message_init(&m);

	memset(xfer, 0, sizeof(xfer));
	x = &xfer[0];

	cmd &=  0xff;
	x->tx_buf = &cmd;
	x->bits_per_word = 9;
	x->len = 2;

	if (rlen > 1 && wlen == 0) {
		/*
		 * Between the command and the response data there is a
		 * dummy clock cycle. Add an extra bit after the command
		 * word to account for this.
		 */
		x->bits_per_word = 10;
		cmd <<= 1;
	}
	spi_message_add_tail(x, &m);

	if (wlen) {
		x++;
		x->tx_buf = wbuf;
		x->len = wlen;
		x->bits_per_word = 9;
		spi_message_add_tail(x, &m);
	}

	if (rlen) {
		x++;
		x->rx_buf	= rbuf;
		x->len		= rlen;
		spi_message_add_tail(x, &m);
	}

	r = spi_sync(md->spi, &m);
	if (r < 0)
		dev_dbg(&md->spi->dev, "spi_sync %d\n", r);
}

static inline void acx565akm_cmd(struct acx565akm_device *md, int cmd)
{
	acx565akm_transfer(md, cmd, NULL, 0, NULL, 0);
}

static inline void acx565akm_write(struct acx565akm_device *md,
			       int reg, const u8 *buf, int len)
{
	acx565akm_transfer(md, reg, buf, len, NULL, 0);
}

static inline void acx565akm_read(struct acx565akm_device *md,
			      int reg, u8 *buf, int len)
{
	acx565akm_transfer(md, reg, NULL, 0, buf, len);
}

static void hw_guard_start(struct acx565akm_device *md, int guard_msec)
{
	md->hw_guard_wait = msecs_to_jiffies(guard_msec);
	md->hw_guard_end = jiffies + md->hw_guard_wait;
}

static void hw_guard_wait(struct acx565akm_device *md)
{
	unsigned long wait = md->hw_guard_end - jiffies;

	if ((long)wait > 0 && wait <= md->hw_guard_wait) {
		set_current_state(TASK_UNINTERRUPTIBLE);
		schedule_timeout(wait);
	}
}

/*----------------------MIPID wrappers----------------------------*/

static void set_sleep_mode(struct acx565akm_device *md, int on)
{
	int cmd;

	if (on)
		cmd = MIPID_CMD_SLEEP_IN;
	else
		cmd = MIPID_CMD_SLEEP_OUT;
	/*
	 * We have to keep 120msec between sleep in/out commands.
	 * (8.2.15, 8.2.16).
	 */
	hw_guard_wait(md);
	acx565akm_cmd(md, cmd);
	hw_guard_start(md, 120);
}

static void set_display_state(struct acx565akm_device *md, int enabled)
{
	int cmd = enabled ? MIPID_CMD_DISP_ON : MIPID_CMD_DISP_OFF;

	acx565akm_cmd(md, cmd);
}

static int panel_enabled(struct acx565akm_device *md)
{
	u32 disp_status;
	int enabled;

	acx565akm_read(md, MIPID_CMD_READ_DISP_STATUS, (u8 *)&disp_status, 4);
	disp_status = __be32_to_cpu(disp_status);
	enabled = (disp_status & (1 << 17)) && (disp_status & (1 << 10));
	dev_dbg(&md->spi->dev,
		"LCD panel %senabled by bootloader (status 0x%04x)\n",
		enabled ? "" : "not ", disp_status);
	return enabled;
}

static int panel_detect(struct acx565akm_device *md)
{
	acx565akm_read(md, MIPID_CMD_READ_DISP_ID, md->display_id, 3);
	dev_dbg(&md->spi->dev, "MIPI display ID: %02x%02x%02x\n",
		md->display_id[0], md->display_id[1], md->display_id[2]);

	switch (md->display_id[0]) {
	case 0x10:
		md->model = MIPID_VER_ACX565AKM;
		md->name = "acx565akm";
		md->has_bc = 1;
		md->has_cabc = 1;
		break;
	case 0x29:
		md->model = MIPID_VER_L4F00311;
		md->name = "l4f00311";
		break;
	case 0x45:
		md->model = MIPID_VER_LPH8923;
		md->name = "lph8923";
		break;
	case 0x83:
		md->model = MIPID_VER_LS041Y3;
		md->name = "ls041y3";
		break;
	default:
		md->name = "unknown";
		dev_err(&md->spi->dev, "invalid display ID\n");
		return -ENODEV;
	}

	md->revision = md->display_id[1];

	dev_info(&md->spi->dev, "omapfb: %s rev %02x LCD detected\n",
			md->name, md->revision);

	return 0;
}

/*----------------------Backlight Control-------------------------*/

static void enable_backlight_ctrl(struct acx565akm_device *md, int enable)
{
	u16 ctrl;

	acx565akm_read(md, MIPID_CMD_READ_CTRL_DISP, (u8 *)&ctrl, 1);
	if (enable) {
		ctrl |= CTRL_DISP_BRIGHTNESS_CTRL_ON |
			CTRL_DISP_BACKLIGHT_ON;
	} else {
		ctrl &= ~(CTRL_DISP_BRIGHTNESS_CTRL_ON |
			  CTRL_DISP_BACKLIGHT_ON);
	}

	ctrl |= 1 << 8;
	acx565akm_write(md, MIPID_CMD_WRITE_CTRL_DISP, (u8 *)&ctrl, 2);
}

static void set_cabc_mode(struct acx565akm_device *md, unsigned mode)
{
	u16 cabc_ctrl;

	md->cabc_mode = mode;
	if (!md->enabled)
		return;
	cabc_ctrl = 0;
	acx565akm_read(md, MIPID_CMD_READ_CABC, (u8 *)&cabc_ctrl, 1);
	cabc_ctrl &= ~3;
	cabc_ctrl |= (1 << 8) | (mode & 3);
	acx565akm_write(md, MIPID_CMD_WRITE_CABC, (u8 *)&cabc_ctrl, 2);
}

static unsigned get_cabc_mode(struct acx565akm_device *md)
{
	return md->cabc_mode;
}

static unsigned get_hw_cabc_mode(struct acx565akm_device *md)
{
	u8 cabc_ctrl;

	acx565akm_read(md, MIPID_CMD_READ_CABC, &cabc_ctrl, 1);
	return cabc_ctrl & 3;
}

static void acx565akm_set_brightness(struct acx565akm_device *md, int level)
{
	int bv;

	bv = level | (1 << 8);
	acx565akm_write(md, MIPID_CMD_WRITE_DISP_BRIGHTNESS, (u8 *)&bv, 2);

	if (level)
		enable_backlight_ctrl(md, 1);
	else
		enable_backlight_ctrl(md, 0);
}

static int acx565akm_get_actual_brightness(struct acx565akm_device *md)
{
	u8 bv;

	acx565akm_read(md, MIPID_CMD_READ_DISP_BRIGHTNESS, &bv, 1);

	return bv;
}


static int acx565akm_bl_update_status(struct backlight_device *dev)
{
	struct acx565akm_device *md = dev_get_drvdata(&dev->dev);
	int r;
	int level;

	dev_dbg(&md->spi->dev, "%s\n", __func__);

	mutex_lock(&md->mutex);

	if (dev->props.fb_blank == FB_BLANK_UNBLANK &&
			dev->props.power == FB_BLANK_UNBLANK)
		level = dev->props.brightness;
	else
		level = 0;

	r = 0;
	if (md->has_bc)
		acx565akm_set_brightness(md, level);
	else if (md->dssdev->set_backlight)
		r = md->dssdev->set_backlight(md->dssdev, level);
	else
		r = -ENODEV;

	mutex_unlock(&md->mutex);

	return r;
}

static int acx565akm_bl_get_intensity(struct backlight_device *dev)
{
	struct acx565akm_device *md = dev_get_drvdata(&dev->dev);

	dev_dbg(&dev->dev, "%s\n", __func__);

	if (!md->has_bc && md->dssdev->set_backlight == NULL)
		return -ENODEV;

	if (dev->props.fb_blank == FB_BLANK_UNBLANK &&
			dev->props.power == FB_BLANK_UNBLANK) {
		if (md->has_bc)
			return acx565akm_get_actual_brightness(md);
		else
			return dev->props.brightness;
	}

	return 0;
}

static const struct backlight_ops acx565akm_bl_ops = {
	.get_brightness = acx565akm_bl_get_intensity,
	.update_status  = acx565akm_bl_update_status,
};

/*--------------------Auto Brightness control via Sysfs---------------------*/

static const char *cabc_modes[] = {
	"off",		/* always used when CABC is not supported */
	"ui",
	"still-image",
	"moving-image",
};

static ssize_t show_cabc_mode(struct device *dev,
		struct device_attribute *attr,
		char *buf)
{
	struct acx565akm_device *md = dev_get_drvdata(dev);
	const char *mode_str;
	int mode;
	int len;

	if (!md->has_cabc)
		mode = 0;
	else
		mode = get_cabc_mode(md);
	mode_str = "unknown";
	if (mode >= 0 && mode < ARRAY_SIZE(cabc_modes))
		mode_str = cabc_modes[mode];
	len = snprintf(buf, PAGE_SIZE, "%s\n", mode_str);

	return len < PAGE_SIZE - 1 ? len : PAGE_SIZE - 1;
}

static ssize_t store_cabc_mode(struct device *dev,
		struct device_attribute *attr,
		const char *buf, size_t count)
{
	struct acx565akm_device *md = dev_get_drvdata(dev);
	int i;

	for (i = 0; i < ARRAY_SIZE(cabc_modes); i++) {
		const char *mode_str = cabc_modes[i];
		int cmp_len = strlen(mode_str);

		if (count > 0 && buf[count - 1] == '\n')
			count--;
		if (count != cmp_len)
			continue;

		if (strncmp(buf, mode_str, cmp_len) == 0)
			break;
	}

	if (i == ARRAY_SIZE(cabc_modes))
		return -EINVAL;

	if (!md->has_cabc && i != 0)
		return -EINVAL;

	mutex_lock(&md->mutex);
	set_cabc_mode(md, i);
	mutex_unlock(&md->mutex);

	return count;
}

static ssize_t show_cabc_available_modes(struct device *dev,
		struct device_attribute *attr,
		char *buf)
{
	struct acx565akm_device *md = dev_get_drvdata(dev);
	int len;
	int i;

	if (!md->has_cabc)
		return snprintf(buf, PAGE_SIZE, "%s\n", cabc_modes[0]);

	for (i = 0, len = 0;
	     len < PAGE_SIZE && i < ARRAY_SIZE(cabc_modes); i++)
		len += snprintf(&buf[len], PAGE_SIZE - len, "%s%s%s",
			i ? " " : "", cabc_modes[i],
			i == ARRAY_SIZE(cabc_modes) - 1 ? "\n" : "");

	return len < PAGE_SIZE ? len : PAGE_SIZE - 1;
}

static DEVICE_ATTR(cabc_mode, S_IRUGO | S_IWUSR,
		show_cabc_mode, store_cabc_mode);
static DEVICE_ATTR(cabc_available_modes, S_IRUGO,
		show_cabc_available_modes, NULL);

static struct attribute *bldev_attrs[] = {
	&dev_attr_cabc_mode.attr,
	&dev_attr_cabc_available_modes.attr,
	NULL,
};

static struct attribute_group bldev_attr_group = {
	.attrs = bldev_attrs,
};


/*---------------------------ACX Panel----------------------------*/

static int acx_get_recommended_bpp(struct omap_dss_device *dssdev)
{
	return 16;
}

static struct omap_video_timings acx_panel_timings = {
	.x_res		= 800,
	.y_res		= 480,
	.pixel_clock	= 24000,
	.hfp		= 28,
	.hsw		= 4,
	.hbp		= 24,
	.vfp		= 3,
	.vsw		= 3,
	.vbp		= 4,
};

static int acx_panel_probe(struct omap_dss_device *dssdev)
{
	int r;
	struct acx565akm_device *md = &acx_dev;
	struct backlight_device *bldev;
	int max_brightness, brightness;
	struct backlight_properties props;

	dev_dbg(&dssdev->dev, "%s\n", __func__);
	dssdev->panel.config = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
					OMAP_DSS_LCD_IHS;
	/* FIXME AC bias ? */
	dssdev->panel.timings = acx_panel_timings;

	if (dssdev->platform_enable)
		dssdev->platform_enable(dssdev);
	/*
	 * After reset we have to wait 5 msec before the first
	 * command can be sent.
	 */
	msleep(5);

	md->enabled = panel_enabled(md);

	r = panel_detect(md);
	if (r) {
		dev_err(&dssdev->dev, "%s panel detect error\n", __func__);
		if (!md->enabled && dssdev->platform_disable)
			dssdev->platform_disable(dssdev);
		return r;
	}

	mutex_lock(&acx_dev.mutex);
	acx_dev.dssdev = dssdev;
	mutex_unlock(&acx_dev.mutex);

	if (!md->enabled) {
		if (dssdev->platform_disable)
			dssdev->platform_disable(dssdev);
	}

	/*------- Backlight control --------*/

	props.fb_blank = FB_BLANK_UNBLANK;
	props.power = FB_BLANK_UNBLANK;

	bldev = backlight_device_register("acx565akm", &md->spi->dev,
			md, &acx565akm_bl_ops, &props);
	md->bl_dev = bldev;
	if (md->has_cabc) {
		r = sysfs_create_group(&bldev->dev.kobj, &bldev_attr_group);
		if (r) {
			dev_err(&bldev->dev,
				"%s failed to create sysfs files\n", __func__);
			backlight_device_unregister(bldev);
			return r;
		}
		md->cabc_mode = get_hw_cabc_mode(md);
	}

	if (md->has_bc)
		max_brightness = 255;
	else
		max_brightness = dssdev->max_backlight_level;

	if (md->has_bc)
		brightness = acx565akm_get_actual_brightness(md);
	else if (dssdev->get_backlight)
		brightness = dssdev->get_backlight(dssdev);
	else
		brightness = 0;

	bldev->props.max_brightness = max_brightness;
	bldev->props.brightness = brightness;

	acx565akm_bl_update_status(bldev);
	return 0;
}

static void acx_panel_remove(struct omap_dss_device *dssdev)
{
	struct acx565akm_device *md = &acx_dev;

	dev_dbg(&dssdev->dev, "%s\n", __func__);
	sysfs_remove_group(&md->bl_dev->dev.kobj, &bldev_attr_group);
	backlight_device_unregister(md->bl_dev);
	mutex_lock(&acx_dev.mutex);
	acx_dev.dssdev = NULL;
	mutex_unlock(&acx_dev.mutex);
}

static int acx_panel_power_on(struct omap_dss_device *dssdev)
{
	struct acx565akm_device *md = &acx_dev;
	int r;

	dev_dbg(&dssdev->dev, "%s\n", __func__);

	mutex_lock(&md->mutex);

	r = omapdss_sdi_display_enable(dssdev);
	if (r) {
		pr_err("%s sdi enable failed\n", __func__);
		return r;
	}

	/*FIXME tweak me */
	msleep(50);

	if (dssdev->platform_enable) {
		r = dssdev->platform_enable(dssdev);
		if (r)
			goto fail;
	}

	if (md->enabled) {
		dev_dbg(&md->spi->dev, "panel already enabled\n");
		mutex_unlock(&md->mutex);
		return 0;
	}

	/*
	 * We have to meet all the following delay requirements:
	 * 1. tRW: reset pulse width 10usec (7.12.1)
	 * 2. tRT: reset cancel time 5msec (7.12.1)
	 * 3. Providing PCLK,HS,VS signals for 2 frames = ~50msec worst
	 *    case (7.6.2)
	 * 4. 120msec before the sleep out command (7.12.1)
	 */
	msleep(120);

	set_sleep_mode(md, 0);
	md->enabled = 1;

	/* 5msec between sleep out and the next command. (8.2.16) */
	msleep(5);
	set_display_state(md, 1);
	set_cabc_mode(md, md->cabc_mode);

	mutex_unlock(&md->mutex);

	return acx565akm_bl_update_status(md->bl_dev);
fail:
	omapdss_sdi_display_disable(dssdev);
	return r;
}

static void acx_panel_power_off(struct omap_dss_device *dssdev)
{
	struct acx565akm_device *md = &acx_dev;

	dev_dbg(&dssdev->dev, "%s\n", __func__);

	mutex_lock(&md->mutex);

	if (!md->enabled) {
		mutex_unlock(&md->mutex);
		return;
	}
	set_display_state(md, 0);
	set_sleep_mode(md, 1);
	md->enabled = 0;
	/*
	 * We have to provide PCLK,HS,VS signals for 2 frames (worst case
	 * ~50msec) after sending the sleep in command and asserting the
	 * reset signal. We probably could assert the reset w/o the delay
	 * but we still delay to avoid possible artifacts. (7.6.1)
	 */
	msleep(50);

	if (dssdev->platform_disable)
		dssdev->platform_disable(dssdev);

	/* FIXME need to tweak this delay */
	msleep(100);

	omapdss_sdi_display_disable(dssdev);

	mutex_unlock(&md->mutex);
}

static int acx_panel_enable(struct omap_dss_device *dssdev)
{
	int r;

	dev_dbg(&dssdev->dev, "%s\n", __func__);
	r = acx_panel_power_on(dssdev);

	if (r)
		return r;

	dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
	return 0;
}

static void acx_panel_disable(struct omap_dss_device *dssdev)
{
	dev_dbg(&dssdev->dev, "%s\n", __func__);
	acx_panel_power_off(dssdev);
	dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
}

static int acx_panel_suspend(struct omap_dss_device *dssdev)
{
	dev_dbg(&dssdev->dev, "%s\n", __func__);
	acx_panel_power_off(dssdev);
	dssdev->state = OMAP_DSS_DISPLAY_SUSPENDED;
	return 0;
}

static int acx_panel_resume(struct omap_dss_device *dssdev)
{
	int r;

	dev_dbg(&dssdev->dev, "%s\n", __func__);
	r = acx_panel_power_on(dssdev);
	if (r)
		return r;

	dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
	return 0;
}

static void acx_panel_set_timings(struct omap_dss_device *dssdev,
		struct omap_video_timings *timings)
{
	int r;

	if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
		omapdss_sdi_display_disable(dssdev);

	dssdev->panel.timings = *timings;

	if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) {
		r = omapdss_sdi_display_enable(dssdev);
		if (r)
			dev_err(&dssdev->dev, "%s enable failed\n", __func__);
	}
}

static void acx_panel_get_timings(struct omap_dss_device *dssdev,
		struct omap_video_timings *timings)
{
	*timings = dssdev->panel.timings;
}

static int acx_panel_check_timings(struct omap_dss_device *dssdev,
		struct omap_video_timings *timings)
{
	return 0;
}


static struct omap_dss_driver acx_panel_driver = {
	.probe		= acx_panel_probe,
	.remove		= acx_panel_remove,

	.enable		= acx_panel_enable,
	.disable	= acx_panel_disable,
	.suspend	= acx_panel_suspend,
	.resume		= acx_panel_resume,

	.set_timings	= acx_panel_set_timings,
	.get_timings	= acx_panel_get_timings,
	.check_timings	= acx_panel_check_timings,

	.get_recommended_bpp = acx_get_recommended_bpp,

	.driver         = {
		.name   = "panel-acx565akm",
		.owner  = THIS_MODULE,
	},
};

/*--------------------SPI probe-------------------------*/

static int acx565akm_spi_probe(struct spi_device *spi)
{
	struct acx565akm_device *md = &acx_dev;

	dev_dbg(&spi->dev, "%s\n", __func__);

	spi->mode = SPI_MODE_3;
	md->spi = spi;
	mutex_init(&md->mutex);
	dev_set_drvdata(&spi->dev, md);

	omap_dss_register_driver(&acx_panel_driver);

	return 0;
}

static int acx565akm_spi_remove(struct spi_device *spi)
{
	struct acx565akm_device *md = dev_get_drvdata(&spi->dev);

	dev_dbg(&md->spi->dev, "%s\n", __func__);
	omap_dss_unregister_driver(&acx_panel_driver);

	return 0;
}

static struct spi_driver acx565akm_spi_driver = {
	.driver = {
		.name	= "acx565akm",
		.bus	= &spi_bus_type,
		.owner	= THIS_MODULE,
	},
	.probe	= acx565akm_spi_probe,
	.remove	= __devexit_p(acx565akm_spi_remove),
};

static int __init acx565akm_init(void)
{
	return spi_register_driver(&acx565akm_spi_driver);
}

static void __exit acx565akm_exit(void)
{
	spi_unregister_driver(&acx565akm_spi_driver);
}

module_init(acx565akm_init);
module_exit(acx565akm_exit);

MODULE_AUTHOR("Nokia Corporation");
MODULE_DESCRIPTION("acx565akm LCD Driver");
MODULE_LICENSE("GPL");