summaryrefslogtreecommitdiffstats
path: root/drivers/media/platform/sti/bdisp/bdisp-debug.c
blob: 7af66860d6240cca3cf44e9b8a2ea8724920481e (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
/*
 * Copyright (C) STMicroelectronics SA 2014
 * Authors: Fabien Dessenne <fabien.dessenne@st.com> for STMicroelectronics.
 * License terms:  GNU General Public License (GPL), version 2
 */

#include <linux/debugfs.h>
#include <linux/pm_runtime.h>

#include "bdisp.h"
#include "bdisp-filter.h"
#include "bdisp-reg.h"

void bdisp_dbg_perf_begin(struct bdisp_dev *bdisp)
{
	bdisp->dbg.hw_start = ktime_get();
}

void bdisp_dbg_perf_end(struct bdisp_dev *bdisp)
{
	s64 time_us;

	time_us = ktime_us_delta(ktime_get(), bdisp->dbg.hw_start);

	if (!bdisp->dbg.min_duration)
		bdisp->dbg.min_duration = time_us;
	else
		bdisp->dbg.min_duration = min(time_us, bdisp->dbg.min_duration);

	bdisp->dbg.last_duration = time_us;
	bdisp->dbg.max_duration = max(time_us, bdisp->dbg.max_duration);
	bdisp->dbg.tot_duration += time_us;
}

static void bdisp_dbg_dump_ins(struct seq_file *s, u32 val)
{
	seq_printf(s, "INS\t0x%08X\t", val);

	switch (val & BLT_INS_S1_MASK) {
	case BLT_INS_S1_OFF:
		break;
	case BLT_INS_S1_MEM:
		seq_puts(s, "SRC1=mem - ");
		break;
	case BLT_INS_S1_CF:
		seq_puts(s, "SRC1=ColorFill - ");
		break;
	case BLT_INS_S1_COPY:
		seq_puts(s, "SRC1=copy - ");
		break;
	case BLT_INS_S1_FILL:
		seq_puts(s, "SRC1=fil - ");
		break;
	default:
		seq_puts(s, "SRC1=??? - ");
		break;
	}

	switch (val & BLT_INS_S2_MASK) {
	case BLT_INS_S2_OFF:
		break;
	case BLT_INS_S2_MEM:
		seq_puts(s, "SRC2=mem - ");
		break;
	case BLT_INS_S2_CF:
		seq_puts(s, "SRC2=ColorFill - ");
		break;
	default:
		seq_puts(s, "SRC2=??? - ");
		break;
	}

	if ((val & BLT_INS_S3_MASK) == BLT_INS_S3_MEM)
		seq_puts(s, "SRC3=mem - ");

	if (val & BLT_INS_IVMX)
		seq_puts(s, "IVMX - ");
	if (val & BLT_INS_CLUT)
		seq_puts(s, "CLUT - ");
	if (val & BLT_INS_SCALE)
		seq_puts(s, "Scale - ");
	if (val & BLT_INS_FLICK)
		seq_puts(s, "Flicker - ");
	if (val & BLT_INS_CLIP)
		seq_puts(s, "Clip - ");
	if (val & BLT_INS_CKEY)
		seq_puts(s, "ColorKey - ");
	if (val & BLT_INS_OVMX)
		seq_puts(s, "OVMX - ");
	if (val & BLT_INS_DEI)
		seq_puts(s, "Deint - ");
	if (val & BLT_INS_PMASK)
		seq_puts(s, "PlaneMask - ");
	if (val & BLT_INS_VC1R)
		seq_puts(s, "VC1R - ");
	if (val & BLT_INS_ROTATE)
		seq_puts(s, "Rotate - ");
	if (val & BLT_INS_GRAD)
		seq_puts(s, "GradFill - ");
	if (val & BLT_INS_AQLOCK)
		seq_puts(s, "AQLock - ");
	if (val & BLT_INS_PACE)
		seq_puts(s, "Pace - ");
	if (val & BLT_INS_IRQ)
		seq_puts(s, "IRQ - ");

	seq_puts(s, "\n");
}

static void bdisp_dbg_dump_tty(struct seq_file *s, u32 val)
{
	seq_printf(s, "TTY\t0x%08X\t", val);
	seq_printf(s, "Pitch=%d - ", val & 0xFFFF);

	switch ((val & BLT_TTY_COL_MASK) >> BLT_TTY_COL_SHIFT) {
	case BDISP_RGB565:
		seq_puts(s, "RGB565 - ");
		break;
	case BDISP_RGB888:
		seq_puts(s, "RGB888 - ");
		break;
	case BDISP_XRGB8888:
		seq_puts(s, "xRGB888 - ");
		break;
	case BDISP_ARGB8888:
		seq_puts(s, "ARGB8888 - ");
		break;
	case BDISP_NV12:
		seq_puts(s, "NV12 - ");
		break;
	case BDISP_YUV_3B:
		seq_puts(s, "YUV420P - ");
		break;
	default:
		seq_puts(s, "ColorFormat ??? - ");
		break;
	}

	if (val & BLT_TTY_ALPHA_R)
		seq_puts(s, "AlphaRange - ");
	if (val & BLT_TTY_CR_NOT_CB)
		seq_puts(s, "CrNotCb - ");
	if (val & BLT_TTY_MB)
		seq_puts(s, "MB - ");
	if (val & BLT_TTY_HSO)
		seq_puts(s, "HSO inverse - ");
	if (val & BLT_TTY_VSO)
		seq_puts(s, "VSO inverse - ");
	if (val & BLT_TTY_DITHER)
		seq_puts(s, "Dither - ");
	if (val & BLT_TTY_CHROMA)
		seq_puts(s, "Write CHROMA - ");
	if (val & BLT_TTY_BIG_END)
		seq_puts(s, "BigEndian - ");

	seq_puts(s, "\n");
}

static void bdisp_dbg_dump_xy(struct seq_file *s, u32 val, char *name)
{
	seq_printf(s, "%s\t0x%08X\t", name, val);
	seq_printf(s, "(%d,%d)\n", val & 0xFFFF, (val >> 16));
}

static void bdisp_dbg_dump_sz(struct seq_file *s, u32 val, char *name)
{
	seq_printf(s, "%s\t0x%08X\t", name, val);
	seq_printf(s, "%dx%d\n", val & 0x1FFF, (val >> 16) & 0x1FFF);
}

static void bdisp_dbg_dump_sty(struct seq_file *s,
			       u32 val, u32 addr, char *name)
{
	bool s1, s2, s3;

	seq_printf(s, "%s\t0x%08X\t", name, val);

	if (!addr || !name || (strlen(name) < 2))
		goto done;

	s1 = name[strlen(name) - 1] == '1';
	s2 = name[strlen(name) - 1] == '2';
	s3 = name[strlen(name) - 1] == '3';

	seq_printf(s, "Pitch=%d - ", val & 0xFFFF);

	switch ((val & BLT_TTY_COL_MASK) >> BLT_TTY_COL_SHIFT) {
	case BDISP_RGB565:
		seq_puts(s, "RGB565 - ");
		break;
	case BDISP_RGB888:
		seq_puts(s, "RGB888 - ");
		break;
	case BDISP_XRGB8888:
		seq_puts(s, "xRGB888 - ");
		break;
	case BDISP_ARGB8888:
		seq_puts(s, "ARGB888 - ");
		break;
	case BDISP_NV12:
		seq_puts(s, "NV12 - ");
		break;
	case BDISP_YUV_3B:
		seq_puts(s, "YUV420P - ");
		break;
	default:
		seq_puts(s, "ColorFormat ??? - ");
		break;
	}

	if ((val & BLT_TTY_ALPHA_R) && !s3)
		seq_puts(s, "AlphaRange - ");
	if ((val & BLT_S1TY_A1_SUBSET) && !s3)
		seq_puts(s, "A1SubSet - ");
	if ((val & BLT_TTY_MB) && !s1)
		seq_puts(s, "MB - ");
	if (val & BLT_TTY_HSO)
		seq_puts(s, "HSO inverse - ");
	if (val & BLT_TTY_VSO)
		seq_puts(s, "VSO inverse - ");
	if ((val & BLT_S1TY_CHROMA_EXT) && (s1 || s2))
		seq_puts(s, "ChromaExt - ");
	if ((val & BLT_S3TY_BLANK_ACC) && s3)
		seq_puts(s, "Blank Acc - ");
	if ((val & BTL_S1TY_SUBBYTE) && !s3)
		seq_puts(s, "SubByte - ");
	if ((val & BLT_S1TY_RGB_EXP) && !s3)
		seq_puts(s, "RGBExpand - ");
	if ((val & BLT_TTY_BIG_END) && !s3)
		seq_puts(s, "BigEndian - ");

done:
	seq_puts(s, "\n");
}

static void bdisp_dbg_dump_fctl(struct seq_file *s, u32 val)
{
	seq_printf(s, "FCTL\t0x%08X\t", val);

	if ((val & BLT_FCTL_Y_HV_SCALE) == BLT_FCTL_Y_HV_SCALE)
		seq_puts(s, "Resize Luma - ");
	else if ((val & BLT_FCTL_Y_HV_SCALE) == BLT_FCTL_Y_HV_SAMPLE)
		seq_puts(s, "Sample Luma - ");

	if ((val & BLT_FCTL_HV_SCALE) == BLT_FCTL_HV_SCALE)
		seq_puts(s, "Resize Chroma");
	else if ((val & BLT_FCTL_HV_SCALE) == BLT_FCTL_HV_SAMPLE)
		seq_puts(s, "Sample Chroma");

	seq_puts(s, "\n");
}

static void bdisp_dbg_dump_rsf(struct seq_file *s, u32 val, char *name)
{
	u32 inc;

	seq_printf(s, "%s\t0x%08X\t", name, val);

	if (!val)
		goto done;

	inc = val & 0xFFFF;
	seq_printf(s, "H: %d(6.10) / scale~%dx0.1 - ", inc, 1024 * 10 / inc);

	inc = val >> 16;
	seq_printf(s, "V: %d(6.10) / scale~%dx0.1", inc, 1024 * 10 / inc);

done:
	seq_puts(s, "\n");
}

static void bdisp_dbg_dump_rzi(struct seq_file *s, u32 val, char *name)
{
	seq_printf(s, "%s\t0x%08X\t", name, val);

	if (!val)
		goto done;

	seq_printf(s, "H: init=%d repeat=%d - ", val & 0x3FF, (val >> 12) & 7);
	val >>= 16;
	seq_printf(s, "V: init=%d repeat=%d", val & 0x3FF, (val >> 12) & 7);

done:
	seq_puts(s, "\n");
}

static void bdisp_dbg_dump_ivmx(struct seq_file *s,
				u32 c0, u32 c1, u32 c2, u32 c3)
{
	seq_printf(s, "IVMX0\t0x%08X\n", c0);
	seq_printf(s, "IVMX1\t0x%08X\n", c1);
	seq_printf(s, "IVMX2\t0x%08X\n", c2);
	seq_printf(s, "IVMX3\t0x%08X\t", c3);

	if (!c0 && !c1 && !c2 && !c3) {
		seq_puts(s, "\n");
		return;
	}

	if ((c0 == bdisp_rgb_to_yuv[0]) &&
	    (c1 == bdisp_rgb_to_yuv[1]) &&
	    (c2 == bdisp_rgb_to_yuv[2]) &&
	    (c3 == bdisp_rgb_to_yuv[3])) {
		seq_puts(s, "RGB to YUV\n");
		return;
	}

	if ((c0 == bdisp_yuv_to_rgb[0]) &&
	    (c1 == bdisp_yuv_to_rgb[1]) &&
	    (c2 == bdisp_yuv_to_rgb[2]) &&
	    (c3 == bdisp_yuv_to_rgb[3])) {
		seq_puts(s, "YUV to RGB\n");
		return;
	}
	seq_puts(s, "Unknown conversion\n");
}

static int bdisp_dbg_last_nodes(struct seq_file *s, void *data)
{
	/* Not dumping all fields, focusing on significant ones */
	struct bdisp_dev *bdisp = s->private;
	struct bdisp_node *node;
	int i = 0;

	if (!bdisp->dbg.copy_node[0]) {
		seq_puts(s, "No node built yet\n");
		return 0;
	}

	do {
		node = bdisp->dbg.copy_node[i];
		if (!node)
			break;
		seq_printf(s, "--------\nNode %d:\n", i);
		seq_puts(s, "-- General --\n");
		seq_printf(s, "NIP\t0x%08X\n", node->nip);
		seq_printf(s, "CIC\t0x%08X\n", node->cic);
		bdisp_dbg_dump_ins(s, node->ins);
		seq_printf(s, "ACK\t0x%08X\n", node->ack);
		seq_puts(s, "-- Target --\n");
		seq_printf(s, "TBA\t0x%08X\n", node->tba);
		bdisp_dbg_dump_tty(s, node->tty);
		bdisp_dbg_dump_xy(s, node->txy, "TXY");
		bdisp_dbg_dump_sz(s, node->tsz, "TSZ");
		/* Color Fill not dumped */
		seq_puts(s, "-- Source 1 --\n");
		seq_printf(s, "S1BA\t0x%08X\n", node->s1ba);
		bdisp_dbg_dump_sty(s, node->s1ty, node->s1ba, "S1TY");
		bdisp_dbg_dump_xy(s, node->s1xy, "S1XY");
		seq_puts(s, "-- Source 2 --\n");
		seq_printf(s, "S2BA\t0x%08X\n", node->s2ba);
		bdisp_dbg_dump_sty(s, node->s2ty, node->s2ba, "S2TY");
		bdisp_dbg_dump_xy(s, node->s2xy, "S2XY");
		bdisp_dbg_dump_sz(s, node->s2sz, "S2SZ");
		seq_puts(s, "-- Source 3 --\n");
		seq_printf(s, "S3BA\t0x%08X\n", node->s3ba);
		bdisp_dbg_dump_sty(s, node->s3ty, node->s3ba, "S3TY");
		bdisp_dbg_dump_xy(s, node->s3xy, "S3XY");
		bdisp_dbg_dump_sz(s, node->s3sz, "S3SZ");
		/* Clipping not dumped */
		/* CLUT not dumped */
		seq_puts(s, "-- Filter & Mask --\n");
		bdisp_dbg_dump_fctl(s, node->fctl);
		/* PMK not dumped */
		seq_puts(s, "-- Chroma Filter --\n");
		bdisp_dbg_dump_rsf(s, node->rsf, "RSF");
		bdisp_dbg_dump_rzi(s, node->rzi, "RZI");
		seq_printf(s, "HFP\t0x%08X\n", node->hfp);
		seq_printf(s, "VFP\t0x%08X\n", node->vfp);
		seq_puts(s, "-- Luma Filter --\n");
		bdisp_dbg_dump_rsf(s, node->y_rsf, "Y_RSF");
		bdisp_dbg_dump_rzi(s, node->y_rzi, "Y_RZI");
		seq_printf(s, "Y_HFP\t0x%08X\n", node->y_hfp);
		seq_printf(s, "Y_VFP\t0x%08X\n", node->y_vfp);
		/* Flicker not dumped */
		/* Color key not dumped */
		/* Reserved not dumped */
		/* Static Address & User not dumped */
		seq_puts(s, "-- Input Versatile Matrix --\n");
		bdisp_dbg_dump_ivmx(s, node->ivmx0, node->ivmx1,
				    node->ivmx2, node->ivmx3);
		/* Output Versatile Matrix not dumped */
		/* Pace not dumped */
		/* VC1R & DEI not dumped */
		/* Gradient Fill not dumped */
	} while ((++i < MAX_NB_NODE) && node->nip);

	return 0;
}

static int bdisp_dbg_last_nodes_raw(struct seq_file *s, void *data)
{
	struct bdisp_dev *bdisp = s->private;
	struct bdisp_node *node;
	u32 *val;
	int j, i = 0;

	if (!bdisp->dbg.copy_node[0]) {
		seq_puts(s, "No node built yet\n");
		return 0;
	}

	do {
		node = bdisp->dbg.copy_node[i];
		if (!node)
			break;

		seq_printf(s, "--------\nNode %d:\n", i);
		val = (u32 *)node;
		for (j = 0; j < sizeof(struct bdisp_node) / sizeof(u32); j++)
			seq_printf(s, "0x%08X\n", *val++);
	} while ((++i < MAX_NB_NODE) && node->nip);

	return 0;
}

static const char *bdisp_fmt_to_str(struct bdisp_frame frame)
{
	switch (frame.fmt->pixelformat) {
	case V4L2_PIX_FMT_YUV420:
		return "YUV420P";
	case V4L2_PIX_FMT_NV12:
		if (frame.field == V4L2_FIELD_INTERLACED)
			return "NV12 interlaced";
		else
			return "NV12";
	case V4L2_PIX_FMT_RGB565:
		return "RGB16";
	case V4L2_PIX_FMT_RGB24:
		return "RGB24";
	case V4L2_PIX_FMT_XBGR32:
		return "XRGB";
	case V4L2_PIX_FMT_ABGR32:
		return "ARGB";
	default:
		return "????";
	}
}

static int bdisp_dbg_last_request(struct seq_file *s, void *data)
{
	struct bdisp_dev *bdisp = s->private;
	struct bdisp_request *request = &bdisp->dbg.copy_request;
	struct bdisp_frame src, dst;

	if (!request->nb_req) {
		seq_puts(s, "No request\n");
		return 0;
	}

	src = request->src;
	dst = request->dst;

	seq_printf(s, "\nRequest #%d\n", request->nb_req);

	seq_printf(s, "Format:    %s\t\t\t%s\n",
		   bdisp_fmt_to_str(src), bdisp_fmt_to_str(dst));
	seq_printf(s, "Crop area: %dx%d @ %d,%d  ==>\t%dx%d @ %d,%d\n",
		   src.crop.width, src.crop.height,
		   src.crop.left, src.crop.top,
		   dst.crop.width, dst.crop.height,
		   dst.crop.left, dst.crop.top);
	seq_printf(s, "Buff size: %dx%d\t\t%dx%d\n\n",
		   src.width, src.height, dst.width, dst.height);

	if (request->hflip)
		seq_puts(s, "Horizontal flip\n\n");

	if (request->vflip)
		seq_puts(s, "Vertical flip\n\n");

	return 0;
}

#define DUMP(reg) seq_printf(s, #reg " \t0x%08X\n", readl(bdisp->regs + reg))

static int bdisp_dbg_regs(struct seq_file *s, void *data)
{
	struct bdisp_dev *bdisp = s->private;
	int ret;
	unsigned int i;

	ret = pm_runtime_get_sync(bdisp->dev);
	if (ret < 0) {
		seq_puts(s, "Cannot wake up IP\n");
		return 0;
	}

	seq_printf(s, "Reg @ = 0x%p\n", bdisp->regs);

	seq_puts(s, "\nStatic:\n");
	DUMP(BLT_CTL);
	DUMP(BLT_ITS);
	DUMP(BLT_STA1);
	DUMP(BLT_AQ1_CTL);
	DUMP(BLT_AQ1_IP);
	DUMP(BLT_AQ1_LNA);
	DUMP(BLT_AQ1_STA);
	DUMP(BLT_ITM0);

	seq_puts(s, "\nPlugs:\n");
	DUMP(BLT_PLUGS1_OP2);
	DUMP(BLT_PLUGS1_CHZ);
	DUMP(BLT_PLUGS1_MSZ);
	DUMP(BLT_PLUGS1_PGZ);
	DUMP(BLT_PLUGS2_OP2);
	DUMP(BLT_PLUGS2_CHZ);
	DUMP(BLT_PLUGS2_MSZ);
	DUMP(BLT_PLUGS2_PGZ);
	DUMP(BLT_PLUGS3_OP2);
	DUMP(BLT_PLUGS3_CHZ);
	DUMP(BLT_PLUGS3_MSZ);
	DUMP(BLT_PLUGS3_PGZ);
	DUMP(BLT_PLUGT_OP2);
	DUMP(BLT_PLUGT_CHZ);
	DUMP(BLT_PLUGT_MSZ);
	DUMP(BLT_PLUGT_PGZ);

	seq_puts(s, "\nNode:\n");
	DUMP(BLT_NIP);
	DUMP(BLT_CIC);
	DUMP(BLT_INS);
	DUMP(BLT_ACK);
	DUMP(BLT_TBA);
	DUMP(BLT_TTY);
	DUMP(BLT_TXY);
	DUMP(BLT_TSZ);
	DUMP(BLT_S1BA);
	DUMP(BLT_S1TY);
	DUMP(BLT_S1XY);
	DUMP(BLT_S2BA);
	DUMP(BLT_S2TY);
	DUMP(BLT_S2XY);
	DUMP(BLT_S2SZ);
	DUMP(BLT_S3BA);
	DUMP(BLT_S3TY);
	DUMP(BLT_S3XY);
	DUMP(BLT_S3SZ);
	DUMP(BLT_FCTL);
	DUMP(BLT_RSF);
	DUMP(BLT_RZI);
	DUMP(BLT_HFP);
	DUMP(BLT_VFP);
	DUMP(BLT_Y_RSF);
	DUMP(BLT_Y_RZI);
	DUMP(BLT_Y_HFP);
	DUMP(BLT_Y_VFP);
	DUMP(BLT_IVMX0);
	DUMP(BLT_IVMX1);
	DUMP(BLT_IVMX2);
	DUMP(BLT_IVMX3);
	DUMP(BLT_OVMX0);
	DUMP(BLT_OVMX1);
	DUMP(BLT_OVMX2);
	DUMP(BLT_OVMX3);
	DUMP(BLT_DEI);

	seq_puts(s, "\nFilter:\n");
	for (i = 0; i < BLT_NB_H_COEF; i++) {
		seq_printf(s, "BLT_HFC%d \t0x%08X\n", i,
			   readl(bdisp->regs + BLT_HFC_N + i * 4));
	}
	for (i = 0; i < BLT_NB_V_COEF; i++) {
		seq_printf(s, "BLT_VFC%d \t0x%08X\n", i,
			   readl(bdisp->regs + BLT_VFC_N + i * 4));
	}

	seq_puts(s, "\nLuma filter:\n");
	for (i = 0; i < BLT_NB_H_COEF; i++) {
		seq_printf(s, "BLT_Y_HFC%d \t0x%08X\n", i,
			   readl(bdisp->regs + BLT_Y_HFC_N + i * 4));
	}
	for (i = 0; i < BLT_NB_V_COEF; i++) {
		seq_printf(s, "BLT_Y_VFC%d \t0x%08X\n", i,
			   readl(bdisp->regs + BLT_Y_VFC_N + i * 4));
	}

	pm_runtime_put(bdisp->dev);

	return 0;
}

#define SECOND 1000000

static int bdisp_dbg_perf(struct seq_file *s, void *data)
{
	struct bdisp_dev *bdisp = s->private;
	struct bdisp_request *request = &bdisp->dbg.copy_request;
	s64 avg_time_us;
	int avg_fps, min_fps, max_fps, last_fps;

	if (!request->nb_req) {
		seq_puts(s, "No request\n");
		return 0;
	}

	avg_time_us = div64_s64(bdisp->dbg.tot_duration, request->nb_req);
	if (avg_time_us > SECOND)
		avg_fps = 0;
	else
		avg_fps = SECOND / (s32)avg_time_us;

	if (bdisp->dbg.min_duration > SECOND)
		min_fps = 0;
	else
		min_fps = SECOND / (s32)bdisp->dbg.min_duration;

	if (bdisp->dbg.max_duration > SECOND)
		max_fps = 0;
	else
		max_fps = SECOND / (s32)bdisp->dbg.max_duration;

	if (bdisp->dbg.last_duration > SECOND)
		last_fps = 0;
	else
		last_fps = SECOND / (s32)bdisp->dbg.last_duration;

	seq_printf(s, "HW processing (%d requests):\n", request->nb_req);
	seq_printf(s, " Average: %5lld us  (%3d fps)\n",
		   avg_time_us, avg_fps);
	seq_printf(s, " Min-Max: %5lld us  (%3d fps) - %5lld us  (%3d fps)\n",
		   bdisp->dbg.min_duration, min_fps,
		   bdisp->dbg.max_duration, max_fps);
	seq_printf(s, " Last:    %5lld us  (%3d fps)\n",
		   bdisp->dbg.last_duration, last_fps);

	return 0;
}

#define bdisp_dbg_declare(name) \
	static int bdisp_dbg_##name##_open(struct inode *i, struct file *f) \
	{ \
		return single_open(f, bdisp_dbg_##name, i->i_private); \
	} \
	static const struct file_operations bdisp_dbg_##name##_fops = { \
		.open           = bdisp_dbg_##name##_open, \
		.read           = seq_read, \
		.llseek         = seq_lseek, \
		.release        = single_release, \
	}

#define bdisp_dbg_create_entry(name) \
	debugfs_create_file(#name, S_IRUGO, bdisp->dbg.debugfs_entry, bdisp, \
			    &bdisp_dbg_##name##_fops)

bdisp_dbg_declare(regs);
bdisp_dbg_declare(last_nodes);
bdisp_dbg_declare(last_nodes_raw);
bdisp_dbg_declare(last_request);
bdisp_dbg_declare(perf);

int bdisp_debugfs_create(struct bdisp_dev *bdisp)
{
	char dirname[16];

	snprintf(dirname, sizeof(dirname), "%s%d", BDISP_NAME, bdisp->id);
	bdisp->dbg.debugfs_entry = debugfs_create_dir(dirname, NULL);
	if (!bdisp->dbg.debugfs_entry)
		goto err;

	if (!bdisp_dbg_create_entry(regs))
		goto err;

	if (!bdisp_dbg_create_entry(last_nodes))
		goto err;

	if (!bdisp_dbg_create_entry(last_nodes_raw))
		goto err;

	if (!bdisp_dbg_create_entry(last_request))
		goto err;

	if (!bdisp_dbg_create_entry(perf))
		goto err;

	return 0;

err:
	bdisp_debugfs_remove(bdisp);
	return -ENOMEM;
}

void bdisp_debugfs_remove(struct bdisp_dev *bdisp)
{
	debugfs_remove_recursive(bdisp->dbg.debugfs_entry);
	bdisp->dbg.debugfs_entry = NULL;
}