summaryrefslogtreecommitdiff
path: root/drivers/media/platform/xilinx/xilinx-tpg.c
blob: 0f2d5a0edf0c3486a4bb652207b817e850785c4d (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
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
// SPDX-License-Identifier: GPL-2.0
/*
 * Xilinx Test Pattern Generator
 *
 * Copyright (C) 2013-2015 Ideas on Board
 * Copyright (C) 2013-2015 Xilinx, Inc.
 *
 * Contacts: Hyun Kwon <hyun.kwon@xilinx.com>
 *           Laurent Pinchart <laurent.pinchart@ideasonboard.com>
 */

#include <linux/device.h>
#include <linux/gpio/consumer.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/xilinx-v4l2-controls.h>

#include <media/v4l2-async.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-subdev.h>

#include "xilinx-vip.h"
#include "xilinx-vtc.h"

#define XTPG_CTRL_STATUS_SLAVE_ERROR		(1 << 16)
#define XTPG_CTRL_IRQ_SLAVE_ERROR		(1 << 16)

#define XTPG_PATTERN_CONTROL			0x0100
#define XTPG_PATTERN_MASK			(0xf << 0)
#define XTPG_PATTERN_CONTROL_CROSS_HAIRS	(1 << 4)
#define XTPG_PATTERN_CONTROL_MOVING_BOX		(1 << 5)
#define XTPG_PATTERN_CONTROL_COLOR_MASK_SHIFT	6
#define XTPG_PATTERN_CONTROL_COLOR_MASK_MASK	(0xf << 6)
#define XTPG_PATTERN_CONTROL_STUCK_PIXEL	(1 << 9)
#define XTPG_PATTERN_CONTROL_NOISE		(1 << 10)
#define XTPG_PATTERN_CONTROL_MOTION		(1 << 12)
#define XTPG_MOTION_SPEED			0x0104
#define XTPG_CROSS_HAIRS			0x0108
#define XTPG_CROSS_HAIRS_ROW_SHIFT		0
#define XTPG_CROSS_HAIRS_ROW_MASK		(0xfff << 0)
#define XTPG_CROSS_HAIRS_COLUMN_SHIFT		16
#define XTPG_CROSS_HAIRS_COLUMN_MASK		(0xfff << 16)
#define XTPG_ZPLATE_HOR_CONTROL			0x010c
#define XTPG_ZPLATE_VER_CONTROL			0x0110
#define XTPG_ZPLATE_START_SHIFT			0
#define XTPG_ZPLATE_START_MASK			(0xffff << 0)
#define XTPG_ZPLATE_SPEED_SHIFT			16
#define XTPG_ZPLATE_SPEED_MASK			(0xffff << 16)
#define XTPG_BOX_SIZE				0x0114
#define XTPG_BOX_COLOR				0x0118
#define XTPG_STUCK_PIXEL_THRESH			0x011c
#define XTPG_NOISE_GAIN				0x0120
#define XTPG_BAYER_PHASE			0x0124
#define XTPG_BAYER_PHASE_RGGB			0
#define XTPG_BAYER_PHASE_GRBG			1
#define XTPG_BAYER_PHASE_GBRG			2
#define XTPG_BAYER_PHASE_BGGR			3
#define XTPG_BAYER_PHASE_OFF			4

/*
 * The minimum blanking value is one clock cycle for the front porch, one clock
 * cycle for the sync pulse and one clock cycle for the back porch.
 */
#define XTPG_MIN_HBLANK			3
#define XTPG_MAX_HBLANK			(XVTC_MAX_HSIZE - XVIP_MIN_WIDTH)
#define XTPG_MIN_VBLANK			3
#define XTPG_MAX_VBLANK			(XVTC_MAX_VSIZE - XVIP_MIN_HEIGHT)

/**
 * struct xtpg_device - Xilinx Test Pattern Generator device structure
 * @xvip: Xilinx Video IP device
 * @pads: media pads
 * @npads: number of pads (1 or 2)
 * @has_input: whether an input is connected to the sink pad
 * @formats: active V4L2 media bus format for each pad
 * @default_format: default V4L2 media bus format
 * @vip_format: format information corresponding to the active format
 * @bayer: boolean flag if TPG is set to any bayer format
 * @ctrl_handler: control handler
 * @hblank: horizontal blanking control
 * @vblank: vertical blanking control
 * @pattern: test pattern control
 * @streaming: is the video stream active
 * @vtc: video timing controller
 * @vtmux_gpio: video timing mux GPIO
 */
struct xtpg_device {
	struct xvip_device xvip;

	struct media_pad pads[2];
	unsigned int npads;
	bool has_input;

	struct v4l2_mbus_framefmt formats[2];
	struct v4l2_mbus_framefmt default_format;
	const struct xvip_video_format *vip_format;
	bool bayer;

	struct v4l2_ctrl_handler ctrl_handler;
	struct v4l2_ctrl *hblank;
	struct v4l2_ctrl *vblank;
	struct v4l2_ctrl *pattern;
	bool streaming;

	struct xvtc_device *vtc;
	struct gpio_desc *vtmux_gpio;
};

static inline struct xtpg_device *to_tpg(struct v4l2_subdev *subdev)
{
	return container_of(subdev, struct xtpg_device, xvip.subdev);
}

static u32 xtpg_get_bayer_phase(unsigned int code)
{
	switch (code) {
	case MEDIA_BUS_FMT_SRGGB8_1X8:
		return XTPG_BAYER_PHASE_RGGB;
	case MEDIA_BUS_FMT_SGRBG8_1X8:
		return XTPG_BAYER_PHASE_GRBG;
	case MEDIA_BUS_FMT_SGBRG8_1X8:
		return XTPG_BAYER_PHASE_GBRG;
	case MEDIA_BUS_FMT_SBGGR8_1X8:
		return XTPG_BAYER_PHASE_BGGR;
	default:
		return XTPG_BAYER_PHASE_OFF;
	}
}

static void __xtpg_update_pattern_control(struct xtpg_device *xtpg,
					  bool passthrough, bool pattern)
{
	u32 pattern_mask = (1 << (xtpg->pattern->maximum + 1)) - 1;

	/*
	 * If the TPG has no sink pad or no input connected to its sink pad
	 * passthrough mode can't be enabled.
	 */
	if (xtpg->npads == 1 || !xtpg->has_input)
		passthrough = false;

	/* If passthrough mode is allowed unmask bit 0. */
	if (passthrough)
		pattern_mask &= ~1;

	/* If test pattern mode is allowed unmask all other bits. */
	if (pattern)
		pattern_mask &= 1;

	__v4l2_ctrl_modify_range(xtpg->pattern, 0, xtpg->pattern->maximum,
				 pattern_mask, pattern ? 9 : 0);
}

static void xtpg_update_pattern_control(struct xtpg_device *xtpg,
					bool passthrough, bool pattern)
{
	mutex_lock(xtpg->ctrl_handler.lock);
	__xtpg_update_pattern_control(xtpg, passthrough, pattern);
	mutex_unlock(xtpg->ctrl_handler.lock);
}

/* -----------------------------------------------------------------------------
 * V4L2 Subdevice Video Operations
 */

static int xtpg_s_stream(struct v4l2_subdev *subdev, int enable)
{
	struct xtpg_device *xtpg = to_tpg(subdev);
	unsigned int width = xtpg->formats[0].width;
	unsigned int height = xtpg->formats[0].height;
	bool passthrough;
	u32 bayer_phase;

	if (!enable) {
		xvip_stop(&xtpg->xvip);
		if (xtpg->vtc)
			xvtc_generator_stop(xtpg->vtc);

		xtpg_update_pattern_control(xtpg, true, true);
		xtpg->streaming = false;
		return 0;
	}

	xvip_set_frame_size(&xtpg->xvip, &xtpg->formats[0]);

	if (xtpg->vtc) {
		struct xvtc_config config = {
			.hblank_start = width,
			.hsync_start = width + 1,
			.vblank_start = height,
			.vsync_start = height + 1,
		};
		unsigned int htotal;
		unsigned int vtotal;

		htotal = min_t(unsigned int, XVTC_MAX_HSIZE,
			       v4l2_ctrl_g_ctrl(xtpg->hblank) + width);
		vtotal = min_t(unsigned int, XVTC_MAX_VSIZE,
			       v4l2_ctrl_g_ctrl(xtpg->vblank) + height);

		config.hsync_end = htotal - 1;
		config.hsize = htotal;
		config.vsync_end = vtotal - 1;
		config.vsize = vtotal;

		xvtc_generator_start(xtpg->vtc, &config);
	}

	/*
	 * Configure the bayer phase and video timing mux based on the
	 * operation mode (passthrough or test pattern generation). The test
	 * pattern can be modified by the control set handler, we thus need to
	 * take the control lock here to avoid races.
	 */
	mutex_lock(xtpg->ctrl_handler.lock);

	xvip_clr_and_set(&xtpg->xvip, XTPG_PATTERN_CONTROL,
			 XTPG_PATTERN_MASK, xtpg->pattern->cur.val);

	/*
	 * Switching between passthrough and test pattern generation modes isn't
	 * allowed during streaming, update the control range accordingly.
	 */
	passthrough = xtpg->pattern->cur.val == 0;
	__xtpg_update_pattern_control(xtpg, passthrough, !passthrough);

	xtpg->streaming = true;

	mutex_unlock(xtpg->ctrl_handler.lock);

	/*
	 * For TPG v5.0, the bayer phase needs to be off for the pass through
	 * mode, otherwise the external input would be subsampled.
	 */
	bayer_phase = passthrough ? XTPG_BAYER_PHASE_OFF
		    : xtpg_get_bayer_phase(xtpg->formats[0].code);
	xvip_write(&xtpg->xvip, XTPG_BAYER_PHASE, bayer_phase);

	if (xtpg->vtmux_gpio)
		gpiod_set_value_cansleep(xtpg->vtmux_gpio, !passthrough);

	xvip_start(&xtpg->xvip);

	return 0;
}

/* -----------------------------------------------------------------------------
 * V4L2 Subdevice Pad Operations
 */

static struct v4l2_mbus_framefmt *
__xtpg_get_pad_format(struct xtpg_device *xtpg,
		      struct v4l2_subdev_state *sd_state,
		      unsigned int pad, u32 which)
{
	switch (which) {
	case V4L2_SUBDEV_FORMAT_TRY:
		return v4l2_subdev_get_try_format(&xtpg->xvip.subdev,
						  sd_state, pad);
	case V4L2_SUBDEV_FORMAT_ACTIVE:
		return &xtpg->formats[pad];
	default:
		return NULL;
	}
}

static int xtpg_get_format(struct v4l2_subdev *subdev,
			   struct v4l2_subdev_state *sd_state,
			   struct v4l2_subdev_format *fmt)
{
	struct xtpg_device *xtpg = to_tpg(subdev);

	fmt->format = *__xtpg_get_pad_format(xtpg, sd_state, fmt->pad,
					     fmt->which);

	return 0;
}

static int xtpg_set_format(struct v4l2_subdev *subdev,
			   struct v4l2_subdev_state *sd_state,
			   struct v4l2_subdev_format *fmt)
{
	struct xtpg_device *xtpg = to_tpg(subdev);
	struct v4l2_mbus_framefmt *__format;
	u32 bayer_phase;

	__format = __xtpg_get_pad_format(xtpg, sd_state, fmt->pad, fmt->which);

	/* In two pads mode the source pad format is always identical to the
	 * sink pad format.
	 */
	if (xtpg->npads == 2 && fmt->pad == 1) {
		fmt->format = *__format;
		return 0;
	}

	/* Bayer phase is configurable at runtime */
	if (xtpg->bayer) {
		bayer_phase = xtpg_get_bayer_phase(fmt->format.code);
		if (bayer_phase != XTPG_BAYER_PHASE_OFF)
			__format->code = fmt->format.code;
	}

	xvip_set_format_size(__format, fmt);

	fmt->format = *__format;

	/* Propagate the format to the source pad. */
	if (xtpg->npads == 2) {
		__format = __xtpg_get_pad_format(xtpg, sd_state, 1,
						 fmt->which);
		*__format = fmt->format;
	}

	return 0;
}

/* -----------------------------------------------------------------------------
 * V4L2 Subdevice Operations
 */

static int xtpg_enum_frame_size(struct v4l2_subdev *subdev,
				struct v4l2_subdev_state *sd_state,
				struct v4l2_subdev_frame_size_enum *fse)
{
	struct v4l2_mbus_framefmt *format;

	format = v4l2_subdev_get_try_format(subdev, sd_state, fse->pad);

	if (fse->index || fse->code != format->code)
		return -EINVAL;

	/* Min / max values for pad 0 is always fixed in both one and two pads
	 * modes. In two pads mode, the source pad(= 1) size is identical to
	 * the sink pad size */
	if (fse->pad == 0) {
		fse->min_width = XVIP_MIN_WIDTH;
		fse->max_width = XVIP_MAX_WIDTH;
		fse->min_height = XVIP_MIN_HEIGHT;
		fse->max_height = XVIP_MAX_HEIGHT;
	} else {
		fse->min_width = format->width;
		fse->max_width = format->width;
		fse->min_height = format->height;
		fse->max_height = format->height;
	}

	return 0;
}

static int xtpg_open(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh)
{
	struct xtpg_device *xtpg = to_tpg(subdev);
	struct v4l2_mbus_framefmt *format;

	format = v4l2_subdev_get_try_format(subdev, fh->state, 0);
	*format = xtpg->default_format;

	if (xtpg->npads == 2) {
		format = v4l2_subdev_get_try_format(subdev, fh->state, 1);
		*format = xtpg->default_format;
	}

	return 0;
}

static int xtpg_close(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh)
{
	return 0;
}

static int xtpg_s_ctrl(struct v4l2_ctrl *ctrl)
{
	struct xtpg_device *xtpg = container_of(ctrl->handler,
						struct xtpg_device,
						ctrl_handler);
	switch (ctrl->id) {
	case V4L2_CID_TEST_PATTERN:
		xvip_clr_and_set(&xtpg->xvip, XTPG_PATTERN_CONTROL,
				 XTPG_PATTERN_MASK, ctrl->val);
		return 0;
	case V4L2_CID_XILINX_TPG_CROSS_HAIRS:
		xvip_clr_or_set(&xtpg->xvip, XTPG_PATTERN_CONTROL,
				XTPG_PATTERN_CONTROL_CROSS_HAIRS, ctrl->val);
		return 0;
	case V4L2_CID_XILINX_TPG_MOVING_BOX:
		xvip_clr_or_set(&xtpg->xvip, XTPG_PATTERN_CONTROL,
				XTPG_PATTERN_CONTROL_MOVING_BOX, ctrl->val);
		return 0;
	case V4L2_CID_XILINX_TPG_COLOR_MASK:
		xvip_clr_and_set(&xtpg->xvip, XTPG_PATTERN_CONTROL,
				 XTPG_PATTERN_CONTROL_COLOR_MASK_MASK,
				 ctrl->val <<
				 XTPG_PATTERN_CONTROL_COLOR_MASK_SHIFT);
		return 0;
	case V4L2_CID_XILINX_TPG_STUCK_PIXEL:
		xvip_clr_or_set(&xtpg->xvip, XTPG_PATTERN_CONTROL,
				XTPG_PATTERN_CONTROL_STUCK_PIXEL, ctrl->val);
		return 0;
	case V4L2_CID_XILINX_TPG_NOISE:
		xvip_clr_or_set(&xtpg->xvip, XTPG_PATTERN_CONTROL,
				XTPG_PATTERN_CONTROL_NOISE, ctrl->val);
		return 0;
	case V4L2_CID_XILINX_TPG_MOTION:
		xvip_clr_or_set(&xtpg->xvip, XTPG_PATTERN_CONTROL,
				XTPG_PATTERN_CONTROL_MOTION, ctrl->val);
		return 0;
	case V4L2_CID_XILINX_TPG_MOTION_SPEED:
		xvip_write(&xtpg->xvip, XTPG_MOTION_SPEED, ctrl->val);
		return 0;
	case V4L2_CID_XILINX_TPG_CROSS_HAIR_ROW:
		xvip_clr_and_set(&xtpg->xvip, XTPG_CROSS_HAIRS,
				 XTPG_CROSS_HAIRS_ROW_MASK,
				 ctrl->val << XTPG_CROSS_HAIRS_ROW_SHIFT);
		return 0;
	case V4L2_CID_XILINX_TPG_CROSS_HAIR_COLUMN:
		xvip_clr_and_set(&xtpg->xvip, XTPG_CROSS_HAIRS,
				 XTPG_CROSS_HAIRS_COLUMN_MASK,
				 ctrl->val << XTPG_CROSS_HAIRS_COLUMN_SHIFT);
		return 0;
	case V4L2_CID_XILINX_TPG_ZPLATE_HOR_START:
		xvip_clr_and_set(&xtpg->xvip, XTPG_ZPLATE_HOR_CONTROL,
				 XTPG_ZPLATE_START_MASK,
				 ctrl->val << XTPG_ZPLATE_START_SHIFT);
		return 0;
	case V4L2_CID_XILINX_TPG_ZPLATE_HOR_SPEED:
		xvip_clr_and_set(&xtpg->xvip, XTPG_ZPLATE_HOR_CONTROL,
				 XTPG_ZPLATE_SPEED_MASK,
				 ctrl->val << XTPG_ZPLATE_SPEED_SHIFT);
		return 0;
	case V4L2_CID_XILINX_TPG_ZPLATE_VER_START:
		xvip_clr_and_set(&xtpg->xvip, XTPG_ZPLATE_VER_CONTROL,
				 XTPG_ZPLATE_START_MASK,
				 ctrl->val << XTPG_ZPLATE_START_SHIFT);
		return 0;
	case V4L2_CID_XILINX_TPG_ZPLATE_VER_SPEED:
		xvip_clr_and_set(&xtpg->xvip, XTPG_ZPLATE_VER_CONTROL,
				 XTPG_ZPLATE_SPEED_MASK,
				 ctrl->val << XTPG_ZPLATE_SPEED_SHIFT);
		return 0;
	case V4L2_CID_XILINX_TPG_BOX_SIZE:
		xvip_write(&xtpg->xvip, XTPG_BOX_SIZE, ctrl->val);
		return 0;
	case V4L2_CID_XILINX_TPG_BOX_COLOR:
		xvip_write(&xtpg->xvip, XTPG_BOX_COLOR, ctrl->val);
		return 0;
	case V4L2_CID_XILINX_TPG_STUCK_PIXEL_THRESH:
		xvip_write(&xtpg->xvip, XTPG_STUCK_PIXEL_THRESH, ctrl->val);
		return 0;
	case V4L2_CID_XILINX_TPG_NOISE_GAIN:
		xvip_write(&xtpg->xvip, XTPG_NOISE_GAIN, ctrl->val);
		return 0;
	}

	return 0;
}

static const struct v4l2_ctrl_ops xtpg_ctrl_ops = {
	.s_ctrl	= xtpg_s_ctrl,
};

static const struct v4l2_subdev_core_ops xtpg_core_ops = {
};

static const struct v4l2_subdev_video_ops xtpg_video_ops = {
	.s_stream = xtpg_s_stream,
};

static const struct v4l2_subdev_pad_ops xtpg_pad_ops = {
	.enum_mbus_code		= xvip_enum_mbus_code,
	.enum_frame_size	= xtpg_enum_frame_size,
	.get_fmt		= xtpg_get_format,
	.set_fmt		= xtpg_set_format,
};

static const struct v4l2_subdev_ops xtpg_ops = {
	.core   = &xtpg_core_ops,
	.video  = &xtpg_video_ops,
	.pad    = &xtpg_pad_ops,
};

static const struct v4l2_subdev_internal_ops xtpg_internal_ops = {
	.open	= xtpg_open,
	.close	= xtpg_close,
};

/*
 * Control Config
 */

static const char *const xtpg_pattern_strings[] = {
	"Passthrough",
	"Horizontal Ramp",
	"Vertical Ramp",
	"Temporal Ramp",
	"Solid Red",
	"Solid Green",
	"Solid Blue",
	"Solid Black",
	"Solid White",
	"Color Bars",
	"Zone Plate",
	"Tartan Color Bars",
	"Cross Hatch",
	"None",
	"Vertical/Horizontal Ramps",
	"Black/White Checker Board",
};

static struct v4l2_ctrl_config xtpg_ctrls[] = {
	{
		.ops	= &xtpg_ctrl_ops,
		.id	= V4L2_CID_XILINX_TPG_CROSS_HAIRS,
		.name	= "Test Pattern: Cross Hairs",
		.type	= V4L2_CTRL_TYPE_BOOLEAN,
		.min	= false,
		.max	= true,
		.step	= 1,
		.def	= 0,
	}, {
		.ops	= &xtpg_ctrl_ops,
		.id	= V4L2_CID_XILINX_TPG_MOVING_BOX,
		.name	= "Test Pattern: Moving Box",
		.type	= V4L2_CTRL_TYPE_BOOLEAN,
		.min	= false,
		.max	= true,
		.step	= 1,
		.def	= 0,
	}, {
		.ops	= &xtpg_ctrl_ops,
		.id	= V4L2_CID_XILINX_TPG_COLOR_MASK,
		.name	= "Test Pattern: Color Mask",
		.type	= V4L2_CTRL_TYPE_BITMASK,
		.min	= 0,
		.max	= 0xf,
		.def	= 0,
	}, {
		.ops	= &xtpg_ctrl_ops,
		.id	= V4L2_CID_XILINX_TPG_STUCK_PIXEL,
		.name	= "Test Pattern: Stuck Pixel",
		.type	= V4L2_CTRL_TYPE_BOOLEAN,
		.min	= false,
		.max	= true,
		.step	= 1,
		.def	= 0,
	}, {
		.ops	= &xtpg_ctrl_ops,
		.id	= V4L2_CID_XILINX_TPG_NOISE,
		.name	= "Test Pattern: Noise",
		.type	= V4L2_CTRL_TYPE_BOOLEAN,
		.min	= false,
		.max	= true,
		.step	= 1,
		.def	= 0,
	}, {
		.ops	= &xtpg_ctrl_ops,
		.id	= V4L2_CID_XILINX_TPG_MOTION,
		.name	= "Test Pattern: Motion",
		.type	= V4L2_CTRL_TYPE_BOOLEAN,
		.min	= false,
		.max	= true,
		.step	= 1,
		.def	= 0,
	}, {
		.ops	= &xtpg_ctrl_ops,
		.id	= V4L2_CID_XILINX_TPG_MOTION_SPEED,
		.name	= "Test Pattern: Motion Speed",
		.type	= V4L2_CTRL_TYPE_INTEGER,
		.min	= 0,
		.max	= (1 << 8) - 1,
		.step	= 1,
		.def	= 4,
		.flags	= V4L2_CTRL_FLAG_SLIDER,
	}, {
		.ops	= &xtpg_ctrl_ops,
		.id	= V4L2_CID_XILINX_TPG_CROSS_HAIR_ROW,
		.name	= "Test Pattern: Cross Hairs Row",
		.type	= V4L2_CTRL_TYPE_INTEGER,
		.min	= 0,
		.max	= (1 << 12) - 1,
		.step	= 1,
		.def	= 0x64,
		.flags	= V4L2_CTRL_FLAG_SLIDER,
	}, {
		.ops	= &xtpg_ctrl_ops,
		.id	= V4L2_CID_XILINX_TPG_CROSS_HAIR_COLUMN,
		.name	= "Test Pattern: Cross Hairs Column",
		.type	= V4L2_CTRL_TYPE_INTEGER,
		.min	= 0,
		.max	= (1 << 12) - 1,
		.step	= 1,
		.def	= 0x64,
		.flags	= V4L2_CTRL_FLAG_SLIDER,
	}, {
		.ops	= &xtpg_ctrl_ops,
		.id	= V4L2_CID_XILINX_TPG_ZPLATE_HOR_START,
		.name	= "Test Pattern: Zplate Horizontal Start Pos",
		.type	= V4L2_CTRL_TYPE_INTEGER,
		.min	= 0,
		.max	= (1 << 16) - 1,
		.step	= 1,
		.def	= 0x1e,
		.flags	= V4L2_CTRL_FLAG_SLIDER,
	}, {
		.ops	= &xtpg_ctrl_ops,
		.id	= V4L2_CID_XILINX_TPG_ZPLATE_HOR_SPEED,
		.name	= "Test Pattern: Zplate Horizontal Speed",
		.type	= V4L2_CTRL_TYPE_INTEGER,
		.min	= 0,
		.max	= (1 << 16) - 1,
		.step	= 1,
		.def	= 0,
		.flags	= V4L2_CTRL_FLAG_SLIDER,
	}, {
		.ops	= &xtpg_ctrl_ops,
		.id	= V4L2_CID_XILINX_TPG_ZPLATE_VER_START,
		.name	= "Test Pattern: Zplate Vertical Start Pos",
		.type	= V4L2_CTRL_TYPE_INTEGER,
		.min	= 0,
		.max	= (1 << 16) - 1,
		.step	= 1,
		.def	= 1,
		.flags	= V4L2_CTRL_FLAG_SLIDER,
	}, {
		.ops	= &xtpg_ctrl_ops,
		.id	= V4L2_CID_XILINX_TPG_ZPLATE_VER_SPEED,
		.name	= "Test Pattern: Zplate Vertical Speed",
		.type	= V4L2_CTRL_TYPE_INTEGER,
		.min	= 0,
		.max	= (1 << 16) - 1,
		.step	= 1,
		.def	= 0,
		.flags	= V4L2_CTRL_FLAG_SLIDER,
	}, {
		.ops	= &xtpg_ctrl_ops,
		.id	= V4L2_CID_XILINX_TPG_BOX_SIZE,
		.name	= "Test Pattern: Box Size",
		.type	= V4L2_CTRL_TYPE_INTEGER,
		.min	= 0,
		.max	= (1 << 12) - 1,
		.step	= 1,
		.def	= 0x32,
		.flags	= V4L2_CTRL_FLAG_SLIDER,
	}, {
		.ops	= &xtpg_ctrl_ops,
		.id	= V4L2_CID_XILINX_TPG_BOX_COLOR,
		.name	= "Test Pattern: Box Color(RGB)",
		.type	= V4L2_CTRL_TYPE_INTEGER,
		.min	= 0,
		.max	= (1 << 24) - 1,
		.step	= 1,
		.def	= 0,
	}, {
		.ops	= &xtpg_ctrl_ops,
		.id	= V4L2_CID_XILINX_TPG_STUCK_PIXEL_THRESH,
		.name	= "Test Pattern: Stuck Pixel threshold",
		.type	= V4L2_CTRL_TYPE_INTEGER,
		.min	= 0,
		.max	= (1 << 16) - 1,
		.step	= 1,
		.def	= 0,
		.flags	= V4L2_CTRL_FLAG_SLIDER,
	}, {
		.ops	= &xtpg_ctrl_ops,
		.id	= V4L2_CID_XILINX_TPG_NOISE_GAIN,
		.name	= "Test Pattern: Noise Gain",
		.type	= V4L2_CTRL_TYPE_INTEGER,
		.min	= 0,
		.max	= (1 << 8) - 1,
		.step	= 1,
		.def	= 0,
		.flags	= V4L2_CTRL_FLAG_SLIDER,
	},
};

/* -----------------------------------------------------------------------------
 * Media Operations
 */

static const struct media_entity_operations xtpg_media_ops = {
	.link_validate = v4l2_subdev_link_validate,
};

/* -----------------------------------------------------------------------------
 * Power Management
 */

static int __maybe_unused xtpg_pm_suspend(struct device *dev)
{
	struct xtpg_device *xtpg = dev_get_drvdata(dev);

	xvip_suspend(&xtpg->xvip);

	return 0;
}

static int __maybe_unused xtpg_pm_resume(struct device *dev)
{
	struct xtpg_device *xtpg = dev_get_drvdata(dev);

	xvip_resume(&xtpg->xvip);

	return 0;
}

/* -----------------------------------------------------------------------------
 * Platform Device Driver
 */

static int xtpg_parse_of(struct xtpg_device *xtpg)
{
	struct device *dev = xtpg->xvip.dev;
	struct device_node *node = xtpg->xvip.dev->of_node;
	struct device_node *ports;
	struct device_node *port;
	unsigned int nports = 0;
	bool has_endpoint = false;

	ports = of_get_child_by_name(node, "ports");
	if (ports == NULL)
		ports = node;

	for_each_child_of_node(ports, port) {
		const struct xvip_video_format *format;
		struct device_node *endpoint;

		if (!of_node_name_eq(port, "port"))
			continue;

		format = xvip_of_get_format(port);
		if (IS_ERR(format)) {
			dev_err(dev, "invalid format in DT");
			of_node_put(port);
			return PTR_ERR(format);
		}

		/* Get and check the format description */
		if (!xtpg->vip_format) {
			xtpg->vip_format = format;
		} else if (xtpg->vip_format != format) {
			dev_err(dev, "in/out format mismatch in DT");
			of_node_put(port);
			return -EINVAL;
		}

		if (nports == 0) {
			endpoint = of_get_next_child(port, NULL);
			if (endpoint)
				has_endpoint = true;
			of_node_put(endpoint);
		}

		/* Count the number of ports. */
		nports++;
	}

	if (nports != 1 && nports != 2) {
		dev_err(dev, "invalid number of ports %u\n", nports);
		return -EINVAL;
	}

	xtpg->npads = nports;
	if (nports == 2 && has_endpoint)
		xtpg->has_input = true;

	return 0;
}

static int xtpg_probe(struct platform_device *pdev)
{
	struct v4l2_subdev *subdev;
	struct xtpg_device *xtpg;
	u32 i, bayer_phase;
	int ret;

	xtpg = devm_kzalloc(&pdev->dev, sizeof(*xtpg), GFP_KERNEL);
	if (!xtpg)
		return -ENOMEM;

	xtpg->xvip.dev = &pdev->dev;

	ret = xtpg_parse_of(xtpg);
	if (ret < 0)
		return ret;

	ret = xvip_init_resources(&xtpg->xvip);
	if (ret < 0)
		return ret;

	xtpg->vtmux_gpio = devm_gpiod_get_optional(&pdev->dev, "timing",
						   GPIOD_OUT_HIGH);
	if (IS_ERR(xtpg->vtmux_gpio)) {
		ret = PTR_ERR(xtpg->vtmux_gpio);
		goto error_resource;
	}

	xtpg->vtc = xvtc_of_get(pdev->dev.of_node);
	if (IS_ERR(xtpg->vtc)) {
		ret = PTR_ERR(xtpg->vtc);
		goto error_resource;
	}

	/* Reset and initialize the core */
	xvip_reset(&xtpg->xvip);

	/* Initialize V4L2 subdevice and media entity. Pad numbers depend on the
	 * number of pads.
	 */
	if (xtpg->npads == 2) {
		xtpg->pads[0].flags = MEDIA_PAD_FL_SINK;
		xtpg->pads[1].flags = MEDIA_PAD_FL_SOURCE;
	} else {
		xtpg->pads[0].flags = MEDIA_PAD_FL_SOURCE;
	}

	/* Initialize the default format */
	xtpg->default_format.code = xtpg->vip_format->code;
	xtpg->default_format.field = V4L2_FIELD_NONE;
	xtpg->default_format.colorspace = V4L2_COLORSPACE_SRGB;
	xvip_get_frame_size(&xtpg->xvip, &xtpg->default_format);

	bayer_phase = xtpg_get_bayer_phase(xtpg->vip_format->code);
	if (bayer_phase != XTPG_BAYER_PHASE_OFF)
		xtpg->bayer = true;

	xtpg->formats[0] = xtpg->default_format;
	if (xtpg->npads == 2)
		xtpg->formats[1] = xtpg->default_format;

	/* Initialize V4L2 subdevice and media entity */
	subdev = &xtpg->xvip.subdev;
	v4l2_subdev_init(subdev, &xtpg_ops);
	subdev->dev = &pdev->dev;
	subdev->internal_ops = &xtpg_internal_ops;
	strscpy(subdev->name, dev_name(&pdev->dev), sizeof(subdev->name));
	v4l2_set_subdevdata(subdev, xtpg);
	subdev->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
	subdev->entity.ops = &xtpg_media_ops;

	ret = media_entity_pads_init(&subdev->entity, xtpg->npads, xtpg->pads);
	if (ret < 0)
		goto error;

	v4l2_ctrl_handler_init(&xtpg->ctrl_handler, 3 + ARRAY_SIZE(xtpg_ctrls));

	xtpg->vblank = v4l2_ctrl_new_std(&xtpg->ctrl_handler, &xtpg_ctrl_ops,
					 V4L2_CID_VBLANK, XTPG_MIN_VBLANK,
					 XTPG_MAX_VBLANK, 1, 100);
	xtpg->hblank = v4l2_ctrl_new_std(&xtpg->ctrl_handler, &xtpg_ctrl_ops,
					 V4L2_CID_HBLANK, XTPG_MIN_HBLANK,
					 XTPG_MAX_HBLANK, 1, 100);
	xtpg->pattern = v4l2_ctrl_new_std_menu_items(&xtpg->ctrl_handler,
					&xtpg_ctrl_ops, V4L2_CID_TEST_PATTERN,
					ARRAY_SIZE(xtpg_pattern_strings) - 1,
					1, 9, xtpg_pattern_strings);

	for (i = 0; i < ARRAY_SIZE(xtpg_ctrls); i++)
		v4l2_ctrl_new_custom(&xtpg->ctrl_handler, &xtpg_ctrls[i], NULL);

	if (xtpg->ctrl_handler.error) {
		dev_err(&pdev->dev, "failed to add controls\n");
		ret = xtpg->ctrl_handler.error;
		goto error;
	}
	subdev->ctrl_handler = &xtpg->ctrl_handler;

	xtpg_update_pattern_control(xtpg, true, true);

	ret = v4l2_ctrl_handler_setup(&xtpg->ctrl_handler);
	if (ret < 0) {
		dev_err(&pdev->dev, "failed to set controls\n");
		goto error;
	}

	platform_set_drvdata(pdev, xtpg);

	xvip_print_version(&xtpg->xvip);

	ret = v4l2_async_register_subdev(subdev);
	if (ret < 0) {
		dev_err(&pdev->dev, "failed to register subdev\n");
		goto error;
	}

	return 0;

error:
	v4l2_ctrl_handler_free(&xtpg->ctrl_handler);
	media_entity_cleanup(&subdev->entity);
	xvtc_put(xtpg->vtc);
error_resource:
	xvip_cleanup_resources(&xtpg->xvip);
	return ret;
}

static int xtpg_remove(struct platform_device *pdev)
{
	struct xtpg_device *xtpg = platform_get_drvdata(pdev);
	struct v4l2_subdev *subdev = &xtpg->xvip.subdev;

	v4l2_async_unregister_subdev(subdev);
	v4l2_ctrl_handler_free(&xtpg->ctrl_handler);
	media_entity_cleanup(&subdev->entity);

	xvip_cleanup_resources(&xtpg->xvip);

	return 0;
}

static SIMPLE_DEV_PM_OPS(xtpg_pm_ops, xtpg_pm_suspend, xtpg_pm_resume);

static const struct of_device_id xtpg_of_id_table[] = {
	{ .compatible = "xlnx,v-tpg-5.0" },
	{ }
};
MODULE_DEVICE_TABLE(of, xtpg_of_id_table);

static struct platform_driver xtpg_driver = {
	.driver = {
		.name		= "xilinx-tpg",
		.pm		= &xtpg_pm_ops,
		.of_match_table	= xtpg_of_id_table,
	},
	.probe			= xtpg_probe,
	.remove			= xtpg_remove,
};

module_platform_driver(xtpg_driver);

MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>");
MODULE_DESCRIPTION("Xilinx Test Pattern Generator Driver");
MODULE_LICENSE("GPL v2");