summaryrefslogtreecommitdiff
path: root/drivers/gpu/ipu-v3/ipu-cpmem.c
blob: 0f1155ea0fbd2989542fddd76e16adff280e8093 (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
/*
 * Copyright (C) 2012 Mentor Graphics Inc.
 * Copyright 2005-2012 Freescale Semiconductor, Inc. All Rights Reserved.
 *
 * The code contained herein is licensed under the GNU General Public
 * License. You may obtain a copy of the GNU General Public License
 * Version 2 or later at the following locations:
 *
 * http://www.opensource.org/licenses/gpl-license.html
 * http://www.gnu.org/copyleft/gpl.html
 */
#include <linux/types.h>
#include <linux/bitrev.h>
#include <linux/io.h>
#include <linux/sizes.h>
#include <drm/drm_fourcc.h>
#include "ipu-prv.h"

struct ipu_cpmem_word {
	u32 data[5];
	u32 res[3];
};

struct ipu_ch_param {
	struct ipu_cpmem_word word[2];
};

struct ipu_cpmem {
	struct ipu_ch_param __iomem *base;
	u32 module;
	spinlock_t lock;
	int use_count;
	struct ipu_soc *ipu;
};

#define IPU_CPMEM_WORD(word, ofs, size) ((((word) * 160 + (ofs)) << 8) | (size))

#define IPU_FIELD_UBO		IPU_CPMEM_WORD(0, 46, 22)
#define IPU_FIELD_VBO		IPU_CPMEM_WORD(0, 68, 22)
#define IPU_FIELD_IOX		IPU_CPMEM_WORD(0, 90, 4)
#define IPU_FIELD_RDRW		IPU_CPMEM_WORD(0, 94, 1)
#define IPU_FIELD_SO		IPU_CPMEM_WORD(0, 113, 1)
#define IPU_FIELD_SLY		IPU_CPMEM_WORD(1, 102, 14)
#define IPU_FIELD_SLUV		IPU_CPMEM_WORD(1, 128, 14)

#define IPU_FIELD_XV		IPU_CPMEM_WORD(0, 0, 10)
#define IPU_FIELD_YV		IPU_CPMEM_WORD(0, 10, 9)
#define IPU_FIELD_XB		IPU_CPMEM_WORD(0, 19, 13)
#define IPU_FIELD_YB		IPU_CPMEM_WORD(0, 32, 12)
#define IPU_FIELD_NSB_B		IPU_CPMEM_WORD(0, 44, 1)
#define IPU_FIELD_CF		IPU_CPMEM_WORD(0, 45, 1)
#define IPU_FIELD_SX		IPU_CPMEM_WORD(0, 46, 12)
#define IPU_FIELD_SY		IPU_CPMEM_WORD(0, 58, 11)
#define IPU_FIELD_NS		IPU_CPMEM_WORD(0, 69, 10)
#define IPU_FIELD_SDX		IPU_CPMEM_WORD(0, 79, 7)
#define IPU_FIELD_SM		IPU_CPMEM_WORD(0, 86, 10)
#define IPU_FIELD_SCC		IPU_CPMEM_WORD(0, 96, 1)
#define IPU_FIELD_SCE		IPU_CPMEM_WORD(0, 97, 1)
#define IPU_FIELD_SDY		IPU_CPMEM_WORD(0, 98, 7)
#define IPU_FIELD_SDRX		IPU_CPMEM_WORD(0, 105, 1)
#define IPU_FIELD_SDRY		IPU_CPMEM_WORD(0, 106, 1)
#define IPU_FIELD_BPP		IPU_CPMEM_WORD(0, 107, 3)
#define IPU_FIELD_DEC_SEL	IPU_CPMEM_WORD(0, 110, 2)
#define IPU_FIELD_DIM		IPU_CPMEM_WORD(0, 112, 1)
#define IPU_FIELD_BNDM		IPU_CPMEM_WORD(0, 114, 3)
#define IPU_FIELD_BM		IPU_CPMEM_WORD(0, 117, 2)
#define IPU_FIELD_ROT		IPU_CPMEM_WORD(0, 119, 1)
#define IPU_FIELD_ROT_HF_VF	IPU_CPMEM_WORD(0, 119, 3)
#define IPU_FIELD_HF		IPU_CPMEM_WORD(0, 120, 1)
#define IPU_FIELD_VF		IPU_CPMEM_WORD(0, 121, 1)
#define IPU_FIELD_THE		IPU_CPMEM_WORD(0, 122, 1)
#define IPU_FIELD_CAP		IPU_CPMEM_WORD(0, 123, 1)
#define IPU_FIELD_CAE		IPU_CPMEM_WORD(0, 124, 1)
#define IPU_FIELD_FW		IPU_CPMEM_WORD(0, 125, 13)
#define IPU_FIELD_FH		IPU_CPMEM_WORD(0, 138, 12)
#define IPU_FIELD_EBA0		IPU_CPMEM_WORD(1, 0, 29)
#define IPU_FIELD_EBA1		IPU_CPMEM_WORD(1, 29, 29)
#define IPU_FIELD_ILO		IPU_CPMEM_WORD(1, 58, 20)
#define IPU_FIELD_NPB		IPU_CPMEM_WORD(1, 78, 7)
#define IPU_FIELD_PFS		IPU_CPMEM_WORD(1, 85, 4)
#define IPU_FIELD_ALU		IPU_CPMEM_WORD(1, 89, 1)
#define IPU_FIELD_ALBM		IPU_CPMEM_WORD(1, 90, 3)
#define IPU_FIELD_ID		IPU_CPMEM_WORD(1, 93, 2)
#define IPU_FIELD_TH		IPU_CPMEM_WORD(1, 95, 7)
#define IPU_FIELD_SL		IPU_CPMEM_WORD(1, 102, 14)
#define IPU_FIELD_WID0		IPU_CPMEM_WORD(1, 116, 3)
#define IPU_FIELD_WID1		IPU_CPMEM_WORD(1, 119, 3)
#define IPU_FIELD_WID2		IPU_CPMEM_WORD(1, 122, 3)
#define IPU_FIELD_WID3		IPU_CPMEM_WORD(1, 125, 3)
#define IPU_FIELD_OFS0		IPU_CPMEM_WORD(1, 128, 5)
#define IPU_FIELD_OFS1		IPU_CPMEM_WORD(1, 133, 5)
#define IPU_FIELD_OFS2		IPU_CPMEM_WORD(1, 138, 5)
#define IPU_FIELD_OFS3		IPU_CPMEM_WORD(1, 143, 5)
#define IPU_FIELD_SXYS		IPU_CPMEM_WORD(1, 148, 1)
#define IPU_FIELD_CRE		IPU_CPMEM_WORD(1, 149, 1)
#define IPU_FIELD_DEC_SEL2	IPU_CPMEM_WORD(1, 150, 1)

static inline struct ipu_ch_param __iomem *
ipu_get_cpmem(struct ipuv3_channel *ch)
{
	struct ipu_cpmem *cpmem = ch->ipu->cpmem_priv;

	return cpmem->base + ch->num;
}

static void ipu_ch_param_write_field(struct ipuv3_channel *ch, u32 wbs, u32 v)
{
	struct ipu_ch_param __iomem *base = ipu_get_cpmem(ch);
	u32 bit = (wbs >> 8) % 160;
	u32 size = wbs & 0xff;
	u32 word = (wbs >> 8) / 160;
	u32 i = bit / 32;
	u32 ofs = bit % 32;
	u32 mask = (1 << size) - 1;
	u32 val;

	pr_debug("%s %d %d %d\n", __func__, word, bit , size);

	val = readl(&base->word[word].data[i]);
	val &= ~(mask << ofs);
	val |= v << ofs;
	writel(val, &base->word[word].data[i]);

	if ((bit + size - 1) / 32 > i) {
		val = readl(&base->word[word].data[i + 1]);
		val &= ~(mask >> (ofs ? (32 - ofs) : 0));
		val |= v >> (ofs ? (32 - ofs) : 0);
		writel(val, &base->word[word].data[i + 1]);
	}
}

static u32 ipu_ch_param_read_field(struct ipuv3_channel *ch, u32 wbs)
{
	struct ipu_ch_param __iomem *base = ipu_get_cpmem(ch);
	u32 bit = (wbs >> 8) % 160;
	u32 size = wbs & 0xff;
	u32 word = (wbs >> 8) / 160;
	u32 i = bit / 32;
	u32 ofs = bit % 32;
	u32 mask = (1 << size) - 1;
	u32 val = 0;

	pr_debug("%s %d %d %d\n", __func__, word, bit , size);

	val = (readl(&base->word[word].data[i]) >> ofs) & mask;

	if ((bit + size - 1) / 32 > i) {
		u32 tmp;

		tmp = readl(&base->word[word].data[i + 1]);
		tmp &= mask >> (ofs ? (32 - ofs) : 0);
		val |= tmp << (ofs ? (32 - ofs) : 0);
	}

	return val;
}

/*
 * The V4L2 spec defines packed RGB formats in memory byte order, which from
 * point of view of the IPU corresponds to little-endian words with the first
 * component in the least significant bits.
 * The DRM pixel formats and IPU internal representation are ordered the other
 * way around, with the first named component ordered at the most significant
 * bits. Further, V4L2 formats are not well defined:
 *     https://linuxtv.org/downloads/v4l-dvb-apis/packed-rgb.html
 * We choose the interpretation which matches GStreamer behavior.
 */
static int v4l2_pix_fmt_to_drm_fourcc(u32 pixelformat)
{
	switch (pixelformat) {
	case V4L2_PIX_FMT_RGB565:
		/*
		 * Here we choose the 'corrected' interpretation of RGBP, a
		 * little-endian 16-bit word with the red component at the most
		 * significant bits:
		 * g[2:0]b[4:0] r[4:0]g[5:3] <=> [16:0] R:G:B
		 */
		return DRM_FORMAT_RGB565;
	case V4L2_PIX_FMT_BGR24:
		/* B G R <=> [24:0] R:G:B */
		return DRM_FORMAT_RGB888;
	case V4L2_PIX_FMT_RGB24:
		/* R G B <=> [24:0] B:G:R */
		return DRM_FORMAT_BGR888;
	case V4L2_PIX_FMT_BGR32:
		/* B G R A <=> [32:0] A:B:G:R */
		return DRM_FORMAT_XRGB8888;
	case V4L2_PIX_FMT_RGB32:
		/* R G B A <=> [32:0] A:B:G:R */
		return DRM_FORMAT_XBGR8888;
	case V4L2_PIX_FMT_XBGR32:
		/* B G R X <=> [32:0] X:R:G:B */
		return DRM_FORMAT_XRGB8888;
	case V4L2_PIX_FMT_XRGB32:
		/* X R G B <=> [32:0] B:G:R:X */
		return DRM_FORMAT_BGRX8888;
	case V4L2_PIX_FMT_UYVY:
		return DRM_FORMAT_UYVY;
	case V4L2_PIX_FMT_YUYV:
		return DRM_FORMAT_YUYV;
	case V4L2_PIX_FMT_YUV420:
		return DRM_FORMAT_YUV420;
	case V4L2_PIX_FMT_YUV422P:
		return DRM_FORMAT_YUV422;
	case V4L2_PIX_FMT_YVU420:
		return DRM_FORMAT_YVU420;
	case V4L2_PIX_FMT_NV12:
		return DRM_FORMAT_NV12;
	case V4L2_PIX_FMT_NV16:
		return DRM_FORMAT_NV16;
	}

	return -EINVAL;
}

void ipu_cpmem_zero(struct ipuv3_channel *ch)
{
	struct ipu_ch_param __iomem *p = ipu_get_cpmem(ch);
	void __iomem *base = p;
	int i;

	for (i = 0; i < sizeof(*p) / sizeof(u32); i++)
		writel(0, base + i * sizeof(u32));
}
EXPORT_SYMBOL_GPL(ipu_cpmem_zero);

void ipu_cpmem_set_resolution(struct ipuv3_channel *ch, int xres, int yres)
{
	ipu_ch_param_write_field(ch, IPU_FIELD_FW, xres - 1);
	ipu_ch_param_write_field(ch, IPU_FIELD_FH, yres - 1);
}
EXPORT_SYMBOL_GPL(ipu_cpmem_set_resolution);

void ipu_cpmem_skip_odd_chroma_rows(struct ipuv3_channel *ch)
{
	ipu_ch_param_write_field(ch, IPU_FIELD_RDRW, 1);
}
EXPORT_SYMBOL_GPL(ipu_cpmem_skip_odd_chroma_rows);

void ipu_cpmem_set_stride(struct ipuv3_channel *ch, int stride)
{
	ipu_ch_param_write_field(ch, IPU_FIELD_SLY, stride - 1);
}
EXPORT_SYMBOL_GPL(ipu_cpmem_set_stride);

void ipu_cpmem_set_high_priority(struct ipuv3_channel *ch)
{
	struct ipu_soc *ipu = ch->ipu;
	u32 val;

	if (ipu->ipu_type == IPUV3EX)
		ipu_ch_param_write_field(ch, IPU_FIELD_ID, 1);

	val = ipu_idmac_read(ipu, IDMAC_CHA_PRI(ch->num));
	val |= 1 << (ch->num % 32);
	ipu_idmac_write(ipu, val, IDMAC_CHA_PRI(ch->num));
};
EXPORT_SYMBOL_GPL(ipu_cpmem_set_high_priority);

void ipu_cpmem_set_buffer(struct ipuv3_channel *ch, int bufnum, dma_addr_t buf)
{
	if (bufnum)
		ipu_ch_param_write_field(ch, IPU_FIELD_EBA1, buf >> 3);
	else
		ipu_ch_param_write_field(ch, IPU_FIELD_EBA0, buf >> 3);
}
EXPORT_SYMBOL_GPL(ipu_cpmem_set_buffer);

void ipu_cpmem_set_uv_offset(struct ipuv3_channel *ch, u32 u_off, u32 v_off)
{
	ipu_ch_param_write_field(ch, IPU_FIELD_UBO, u_off / 8);
	ipu_ch_param_write_field(ch, IPU_FIELD_VBO, v_off / 8);
}
EXPORT_SYMBOL_GPL(ipu_cpmem_set_uv_offset);

void ipu_cpmem_interlaced_scan(struct ipuv3_channel *ch, int stride)
{
	u32 ilo, sly;

	if (stride < 0) {
		stride = -stride;
		ilo = 0x100000 - (stride / 8);
	} else {
		ilo = stride / 8;
	}

	sly = (stride * 2) - 1;

	ipu_ch_param_write_field(ch, IPU_FIELD_SO, 1);
	ipu_ch_param_write_field(ch, IPU_FIELD_ILO, ilo);
	ipu_ch_param_write_field(ch, IPU_FIELD_SLY, sly);
};
EXPORT_SYMBOL_GPL(ipu_cpmem_interlaced_scan);

void ipu_cpmem_set_axi_id(struct ipuv3_channel *ch, u32 id)
{
	id &= 0x3;
	ipu_ch_param_write_field(ch, IPU_FIELD_ID, id);
}
EXPORT_SYMBOL_GPL(ipu_cpmem_set_axi_id);

int ipu_cpmem_get_burstsize(struct ipuv3_channel *ch)
{
	return ipu_ch_param_read_field(ch, IPU_FIELD_NPB) + 1;
}
EXPORT_SYMBOL_GPL(ipu_cpmem_get_burstsize);

void ipu_cpmem_set_burstsize(struct ipuv3_channel *ch, int burstsize)
{
	ipu_ch_param_write_field(ch, IPU_FIELD_NPB, burstsize - 1);
};
EXPORT_SYMBOL_GPL(ipu_cpmem_set_burstsize);

void ipu_cpmem_set_block_mode(struct ipuv3_channel *ch)
{
	ipu_ch_param_write_field(ch, IPU_FIELD_BM, 1);
}
EXPORT_SYMBOL_GPL(ipu_cpmem_set_block_mode);

void ipu_cpmem_set_rotation(struct ipuv3_channel *ch,
			    enum ipu_rotate_mode rot)
{
	u32 temp_rot = bitrev8(rot) >> 5;

	ipu_ch_param_write_field(ch, IPU_FIELD_ROT_HF_VF, temp_rot);
}
EXPORT_SYMBOL_GPL(ipu_cpmem_set_rotation);

int ipu_cpmem_set_format_rgb(struct ipuv3_channel *ch,
			     const struct ipu_rgb *rgb)
{
	int bpp = 0, npb = 0, ro, go, bo, to;

	ro = rgb->bits_per_pixel - rgb->red.length - rgb->red.offset;
	go = rgb->bits_per_pixel - rgb->green.length - rgb->green.offset;
	bo = rgb->bits_per_pixel - rgb->blue.length - rgb->blue.offset;
	to = rgb->bits_per_pixel - rgb->transp.length - rgb->transp.offset;

	ipu_ch_param_write_field(ch, IPU_FIELD_WID0, rgb->red.length - 1);
	ipu_ch_param_write_field(ch, IPU_FIELD_OFS0, ro);
	ipu_ch_param_write_field(ch, IPU_FIELD_WID1, rgb->green.length - 1);
	ipu_ch_param_write_field(ch, IPU_FIELD_OFS1, go);
	ipu_ch_param_write_field(ch, IPU_FIELD_WID2, rgb->blue.length - 1);
	ipu_ch_param_write_field(ch, IPU_FIELD_OFS2, bo);

	if (rgb->transp.length) {
		ipu_ch_param_write_field(ch, IPU_FIELD_WID3,
				rgb->transp.length - 1);
		ipu_ch_param_write_field(ch, IPU_FIELD_OFS3, to);
	} else {
		ipu_ch_param_write_field(ch, IPU_FIELD_WID3, 7);
		ipu_ch_param_write_field(ch, IPU_FIELD_OFS3,
				rgb->bits_per_pixel);
	}

	switch (rgb->bits_per_pixel) {
	case 32:
		bpp = 0;
		npb = 15;
		break;
	case 24:
		bpp = 1;
		npb = 19;
		break;
	case 16:
		bpp = 3;
		npb = 31;
		break;
	case 8:
		bpp = 5;
		npb = 63;
		break;
	default:
		return -EINVAL;
	}
	ipu_ch_param_write_field(ch, IPU_FIELD_BPP, bpp);
	ipu_ch_param_write_field(ch, IPU_FIELD_NPB, npb);
	ipu_ch_param_write_field(ch, IPU_FIELD_PFS, 7); /* rgb mode */

	return 0;
}
EXPORT_SYMBOL_GPL(ipu_cpmem_set_format_rgb);

int ipu_cpmem_set_format_passthrough(struct ipuv3_channel *ch, int width)
{
	int bpp = 0, npb = 0;

	switch (width) {
	case 32:
		bpp = 0;
		npb = 15;
		break;
	case 24:
		bpp = 1;
		npb = 19;
		break;
	case 16:
		bpp = 3;
		npb = 31;
		break;
	case 8:
		bpp = 5;
		npb = 63;
		break;
	default:
		return -EINVAL;
	}

	ipu_ch_param_write_field(ch, IPU_FIELD_BPP, bpp);
	ipu_ch_param_write_field(ch, IPU_FIELD_NPB, npb);
	ipu_ch_param_write_field(ch, IPU_FIELD_PFS, 6); /* raw mode */

	return 0;
}
EXPORT_SYMBOL_GPL(ipu_cpmem_set_format_passthrough);

void ipu_cpmem_set_yuv_interleaved(struct ipuv3_channel *ch, u32 pixel_format)
{
	switch (pixel_format) {
	case V4L2_PIX_FMT_UYVY:
		ipu_ch_param_write_field(ch, IPU_FIELD_BPP, 3); /* bits/pixel */
		ipu_ch_param_write_field(ch, IPU_FIELD_PFS, 0xA);/* pix fmt */
		ipu_ch_param_write_field(ch, IPU_FIELD_NPB, 31);/* burst size */
		break;
	case V4L2_PIX_FMT_YUYV:
		ipu_ch_param_write_field(ch, IPU_FIELD_BPP, 3); /* bits/pixel */
		ipu_ch_param_write_field(ch, IPU_FIELD_PFS, 0x8);/* pix fmt */
		ipu_ch_param_write_field(ch, IPU_FIELD_NPB, 31);/* burst size */
		break;
	}
}
EXPORT_SYMBOL_GPL(ipu_cpmem_set_yuv_interleaved);

void ipu_cpmem_set_yuv_planar_full(struct ipuv3_channel *ch,
				   unsigned int uv_stride,
				   unsigned int u_offset, unsigned int v_offset)
{
	ipu_ch_param_write_field(ch, IPU_FIELD_SLUV, uv_stride - 1);
	ipu_ch_param_write_field(ch, IPU_FIELD_UBO, u_offset / 8);
	ipu_ch_param_write_field(ch, IPU_FIELD_VBO, v_offset / 8);
}
EXPORT_SYMBOL_GPL(ipu_cpmem_set_yuv_planar_full);

static const struct ipu_rgb def_xrgb_32 = {
	.red	= { .offset = 16, .length = 8, },
	.green	= { .offset =  8, .length = 8, },
	.blue	= { .offset =  0, .length = 8, },
	.transp = { .offset = 24, .length = 8, },
	.bits_per_pixel = 32,
};

static const struct ipu_rgb def_xbgr_32 = {
	.red	= { .offset =  0, .length = 8, },
	.green	= { .offset =  8, .length = 8, },
	.blue	= { .offset = 16, .length = 8, },
	.transp = { .offset = 24, .length = 8, },
	.bits_per_pixel = 32,
};

static const struct ipu_rgb def_rgbx_32 = {
	.red	= { .offset = 24, .length = 8, },
	.green	= { .offset = 16, .length = 8, },
	.blue	= { .offset =  8, .length = 8, },
	.transp = { .offset =  0, .length = 8, },
	.bits_per_pixel = 32,
};

static const struct ipu_rgb def_bgrx_32 = {
	.red	= { .offset =  8, .length = 8, },
	.green	= { .offset = 16, .length = 8, },
	.blue	= { .offset = 24, .length = 8, },
	.transp = { .offset =  0, .length = 8, },
	.bits_per_pixel = 32,
};

static const struct ipu_rgb def_rgb_24 = {
	.red	= { .offset = 16, .length = 8, },
	.green	= { .offset =  8, .length = 8, },
	.blue	= { .offset =  0, .length = 8, },
	.transp = { .offset =  0, .length = 0, },
	.bits_per_pixel = 24,
};

static const struct ipu_rgb def_bgr_24 = {
	.red	= { .offset =  0, .length = 8, },
	.green	= { .offset =  8, .length = 8, },
	.blue	= { .offset = 16, .length = 8, },
	.transp = { .offset =  0, .length = 0, },
	.bits_per_pixel = 24,
};

static const struct ipu_rgb def_rgb_16 = {
	.red	= { .offset = 11, .length = 5, },
	.green	= { .offset =  5, .length = 6, },
	.blue	= { .offset =  0, .length = 5, },
	.transp = { .offset =  0, .length = 0, },
	.bits_per_pixel = 16,
};

static const struct ipu_rgb def_bgr_16 = {
	.red	= { .offset =  0, .length = 5, },
	.green	= { .offset =  5, .length = 6, },
	.blue	= { .offset = 11, .length = 5, },
	.transp = { .offset =  0, .length = 0, },
	.bits_per_pixel = 16,
};

static const struct ipu_rgb def_argb_16 = {
	.red	= { .offset = 10, .length = 5, },
	.green	= { .offset =  5, .length = 5, },
	.blue	= { .offset =  0, .length = 5, },
	.transp = { .offset = 15, .length = 1, },
	.bits_per_pixel = 16,
};

static const struct ipu_rgb def_argb_16_4444 = {
	.red	= { .offset =  8, .length = 4, },
	.green	= { .offset =  4, .length = 4, },
	.blue	= { .offset =  0, .length = 4, },
	.transp = { .offset = 12, .length = 4, },
	.bits_per_pixel = 16,
};

static const struct ipu_rgb def_abgr_16 = {
	.red	= { .offset =  0, .length = 5, },
	.green	= { .offset =  5, .length = 5, },
	.blue	= { .offset = 10, .length = 5, },
	.transp = { .offset = 15, .length = 1, },
	.bits_per_pixel = 16,
};

static const struct ipu_rgb def_rgba_16 = {
	.red	= { .offset = 11, .length = 5, },
	.green	= { .offset =  6, .length = 5, },
	.blue	= { .offset =  1, .length = 5, },
	.transp = { .offset =  0, .length = 1, },
	.bits_per_pixel = 16,
};

static const struct ipu_rgb def_bgra_16 = {
	.red	= { .offset =  1, .length = 5, },
	.green	= { .offset =  6, .length = 5, },
	.blue	= { .offset = 11, .length = 5, },
	.transp = { .offset =  0, .length = 1, },
	.bits_per_pixel = 16,
};

#define Y_OFFSET(pix, x, y)	((x) + pix->width * (y))
#define U_OFFSET(pix, x, y)	((pix->width * pix->height) +		\
				 (pix->width * (y) / 4) + (x) / 2)
#define V_OFFSET(pix, x, y)	((pix->width * pix->height) +		\
				 (pix->width * pix->height / 4) +	\
				 (pix->width * (y) / 4) + (x) / 2)
#define U2_OFFSET(pix, x, y)	((pix->width * pix->height) +		\
				 (pix->width * (y) / 2) + (x) / 2)
#define V2_OFFSET(pix, x, y)	((pix->width * pix->height) +		\
				 (pix->width * pix->height / 2) +	\
				 (pix->width * (y) / 2) + (x) / 2)
#define UV_OFFSET(pix, x, y)	((pix->width * pix->height) +	\
				 (pix->width * (y) / 2) + (x))
#define UV2_OFFSET(pix, x, y)	((pix->width * pix->height) +	\
				 (pix->width * y) + (x))

#define NUM_ALPHA_CHANNELS	7

/* See Table 37-12. Alpha channels mapping. */
static int ipu_channel_albm(int ch_num)
{
	switch (ch_num) {
	case IPUV3_CHANNEL_G_MEM_IC_PRP_VF:	return 0;
	case IPUV3_CHANNEL_G_MEM_IC_PP:		return 1;
	case IPUV3_CHANNEL_MEM_FG_SYNC:		return 2;
	case IPUV3_CHANNEL_MEM_FG_ASYNC:	return 3;
	case IPUV3_CHANNEL_MEM_BG_SYNC:		return 4;
	case IPUV3_CHANNEL_MEM_BG_ASYNC:	return 5;
	case IPUV3_CHANNEL_MEM_VDI_PLANE1_COMB: return 6;
	default:
		return -EINVAL;
	}
}

static void ipu_cpmem_set_separate_alpha(struct ipuv3_channel *ch)
{
	struct ipu_soc *ipu = ch->ipu;
	int albm;
	u32 val;

	albm = ipu_channel_albm(ch->num);
	if (albm < 0)
		return;

	ipu_ch_param_write_field(ch, IPU_FIELD_ALU, 1);
	ipu_ch_param_write_field(ch, IPU_FIELD_ALBM, albm);
	ipu_ch_param_write_field(ch, IPU_FIELD_CRE, 1);

	val = ipu_idmac_read(ipu, IDMAC_SEP_ALPHA);
	val |= BIT(ch->num);
	ipu_idmac_write(ipu, val, IDMAC_SEP_ALPHA);
}

int ipu_cpmem_set_fmt(struct ipuv3_channel *ch, u32 drm_fourcc)
{
	switch (drm_fourcc) {
	case DRM_FORMAT_YUV420:
	case DRM_FORMAT_YVU420:
		/* pix format */
		ipu_ch_param_write_field(ch, IPU_FIELD_PFS, 2);
		/* burst size */
		ipu_ch_param_write_field(ch, IPU_FIELD_NPB, 31);
		break;
	case DRM_FORMAT_YUV422:
	case DRM_FORMAT_YVU422:
		/* pix format */
		ipu_ch_param_write_field(ch, IPU_FIELD_PFS, 1);
		/* burst size */
		ipu_ch_param_write_field(ch, IPU_FIELD_NPB, 31);
		break;
	case DRM_FORMAT_YUV444:
	case DRM_FORMAT_YVU444:
		/* pix format */
		ipu_ch_param_write_field(ch, IPU_FIELD_PFS, 0);
		/* burst size */
		ipu_ch_param_write_field(ch, IPU_FIELD_NPB, 31);
		break;
	case DRM_FORMAT_NV12:
		/* pix format */
		ipu_ch_param_write_field(ch, IPU_FIELD_PFS, 4);
		/* burst size */
		ipu_ch_param_write_field(ch, IPU_FIELD_NPB, 31);
		break;
	case DRM_FORMAT_NV16:
		/* pix format */
		ipu_ch_param_write_field(ch, IPU_FIELD_PFS, 3);
		/* burst size */
		ipu_ch_param_write_field(ch, IPU_FIELD_NPB, 31);
		break;
	case DRM_FORMAT_UYVY:
		/* bits/pixel */
		ipu_ch_param_write_field(ch, IPU_FIELD_BPP, 3);
		/* pix format */
		ipu_ch_param_write_field(ch, IPU_FIELD_PFS, 0xA);
		/* burst size */
		ipu_ch_param_write_field(ch, IPU_FIELD_NPB, 31);
		break;
	case DRM_FORMAT_YUYV:
		/* bits/pixel */
		ipu_ch_param_write_field(ch, IPU_FIELD_BPP, 3);
		/* pix format */
		ipu_ch_param_write_field(ch, IPU_FIELD_PFS, 0x8);
		/* burst size */
		ipu_ch_param_write_field(ch, IPU_FIELD_NPB, 31);
		break;
	case DRM_FORMAT_ABGR8888:
	case DRM_FORMAT_XBGR8888:
		ipu_cpmem_set_format_rgb(ch, &def_xbgr_32);
		break;
	case DRM_FORMAT_ARGB8888:
	case DRM_FORMAT_XRGB8888:
		ipu_cpmem_set_format_rgb(ch, &def_xrgb_32);
		break;
	case DRM_FORMAT_RGBA8888:
	case DRM_FORMAT_RGBX8888:
	case DRM_FORMAT_RGBX8888_A8:
		ipu_cpmem_set_format_rgb(ch, &def_rgbx_32);
		break;
	case DRM_FORMAT_BGRA8888:
	case DRM_FORMAT_BGRX8888:
	case DRM_FORMAT_BGRX8888_A8:
		ipu_cpmem_set_format_rgb(ch, &def_bgrx_32);
		break;
	case DRM_FORMAT_BGR888:
	case DRM_FORMAT_BGR888_A8:
		ipu_cpmem_set_format_rgb(ch, &def_bgr_24);
		break;
	case DRM_FORMAT_RGB888:
	case DRM_FORMAT_RGB888_A8:
		ipu_cpmem_set_format_rgb(ch, &def_rgb_24);
		break;
	case DRM_FORMAT_RGB565:
	case DRM_FORMAT_RGB565_A8:
		ipu_cpmem_set_format_rgb(ch, &def_rgb_16);
		break;
	case DRM_FORMAT_BGR565:
	case DRM_FORMAT_BGR565_A8:
		ipu_cpmem_set_format_rgb(ch, &def_bgr_16);
		break;
	case DRM_FORMAT_ARGB1555:
		ipu_cpmem_set_format_rgb(ch, &def_argb_16);
		break;
	case DRM_FORMAT_ABGR1555:
		ipu_cpmem_set_format_rgb(ch, &def_abgr_16);
		break;
	case DRM_FORMAT_RGBA5551:
		ipu_cpmem_set_format_rgb(ch, &def_rgba_16);
		break;
	case DRM_FORMAT_BGRA5551:
		ipu_cpmem_set_format_rgb(ch, &def_bgra_16);
		break;
	case DRM_FORMAT_ARGB4444:
		ipu_cpmem_set_format_rgb(ch, &def_argb_16_4444);
		break;
	default:
		return -EINVAL;
	}

	switch (drm_fourcc) {
	case DRM_FORMAT_RGB565_A8:
	case DRM_FORMAT_BGR565_A8:
	case DRM_FORMAT_RGB888_A8:
	case DRM_FORMAT_BGR888_A8:
	case DRM_FORMAT_RGBX8888_A8:
	case DRM_FORMAT_BGRX8888_A8:
		ipu_ch_param_write_field(ch, IPU_FIELD_WID3, 7);
		ipu_cpmem_set_separate_alpha(ch);
		break;
	default:
		break;
	}

	return 0;
}
EXPORT_SYMBOL_GPL(ipu_cpmem_set_fmt);

int ipu_cpmem_set_image(struct ipuv3_channel *ch, struct ipu_image *image)
{
	struct v4l2_pix_format *pix = &image->pix;
	int offset, u_offset, v_offset;
	int ret = 0;

	pr_debug("%s: resolution: %dx%d stride: %d\n",
		 __func__, pix->width, pix->height,
		 pix->bytesperline);

	ipu_cpmem_set_resolution(ch, image->rect.width, image->rect.height);
	ipu_cpmem_set_stride(ch, pix->bytesperline);

	ipu_cpmem_set_fmt(ch, v4l2_pix_fmt_to_drm_fourcc(pix->pixelformat));

	switch (pix->pixelformat) {
	case V4L2_PIX_FMT_YUV420:
		offset = Y_OFFSET(pix, image->rect.left, image->rect.top);
		u_offset = U_OFFSET(pix, image->rect.left,
				    image->rect.top) - offset;
		v_offset = V_OFFSET(pix, image->rect.left,
				    image->rect.top) - offset;

		ipu_cpmem_set_yuv_planar_full(ch, pix->bytesperline / 2,
					      u_offset, v_offset);
		break;
	case V4L2_PIX_FMT_YVU420:
		offset = Y_OFFSET(pix, image->rect.left, image->rect.top);
		u_offset = U_OFFSET(pix, image->rect.left,
				    image->rect.top) - offset;
		v_offset = V_OFFSET(pix, image->rect.left,
				    image->rect.top) - offset;

		ipu_cpmem_set_yuv_planar_full(ch, pix->bytesperline / 2,
					      v_offset, u_offset);
		break;
	case V4L2_PIX_FMT_YUV422P:
		offset = Y_OFFSET(pix, image->rect.left, image->rect.top);
		u_offset = U2_OFFSET(pix, image->rect.left,
				     image->rect.top) - offset;
		v_offset = V2_OFFSET(pix, image->rect.left,
				     image->rect.top) - offset;

		ipu_cpmem_set_yuv_planar_full(ch, pix->bytesperline / 2,
					      u_offset, v_offset);
		break;
	case V4L2_PIX_FMT_NV12:
		offset = Y_OFFSET(pix, image->rect.left, image->rect.top);
		u_offset = UV_OFFSET(pix, image->rect.left,
				     image->rect.top) - offset;
		v_offset = 0;

		ipu_cpmem_set_yuv_planar_full(ch, pix->bytesperline,
					      u_offset, v_offset);
		break;
	case V4L2_PIX_FMT_NV16:
		offset = Y_OFFSET(pix, image->rect.left, image->rect.top);
		u_offset = UV2_OFFSET(pix, image->rect.left,
				      image->rect.top) - offset;
		v_offset = 0;

		ipu_cpmem_set_yuv_planar_full(ch, pix->bytesperline,
					      u_offset, v_offset);
		break;
	case V4L2_PIX_FMT_UYVY:
	case V4L2_PIX_FMT_YUYV:
	case V4L2_PIX_FMT_RGB565:
		offset = image->rect.left * 2 +
			image->rect.top * pix->bytesperline;
		break;
	case V4L2_PIX_FMT_RGB32:
	case V4L2_PIX_FMT_BGR32:
	case V4L2_PIX_FMT_XRGB32:
	case V4L2_PIX_FMT_XBGR32:
		offset = image->rect.left * 4 +
			image->rect.top * pix->bytesperline;
		break;
	case V4L2_PIX_FMT_RGB24:
	case V4L2_PIX_FMT_BGR24:
		offset = image->rect.left * 3 +
			image->rect.top * pix->bytesperline;
		break;
	case V4L2_PIX_FMT_SBGGR8:
	case V4L2_PIX_FMT_SGBRG8:
	case V4L2_PIX_FMT_SGRBG8:
	case V4L2_PIX_FMT_SRGGB8:
	case V4L2_PIX_FMT_GREY:
		offset = image->rect.left + image->rect.top * pix->bytesperline;
		break;
	case V4L2_PIX_FMT_SBGGR16:
	case V4L2_PIX_FMT_SGBRG16:
	case V4L2_PIX_FMT_SGRBG16:
	case V4L2_PIX_FMT_SRGGB16:
	case V4L2_PIX_FMT_Y16:
		offset = image->rect.left * 2 +
			 image->rect.top * pix->bytesperline;
		break;
	default:
		/* This should not happen */
		WARN_ON(1);
		offset = 0;
		ret = -EINVAL;
	}

	ipu_cpmem_set_buffer(ch, 0, image->phys0 + offset);
	ipu_cpmem_set_buffer(ch, 1, image->phys1 + offset);

	return ret;
}
EXPORT_SYMBOL_GPL(ipu_cpmem_set_image);

void ipu_cpmem_dump(struct ipuv3_channel *ch)
{
	struct ipu_ch_param __iomem *p = ipu_get_cpmem(ch);
	struct ipu_soc *ipu = ch->ipu;
	int chno = ch->num;

	dev_dbg(ipu->dev, "ch %d word 0 - %08X %08X %08X %08X %08X\n", chno,
		readl(&p->word[0].data[0]),
		readl(&p->word[0].data[1]),
		readl(&p->word[0].data[2]),
		readl(&p->word[0].data[3]),
		readl(&p->word[0].data[4]));
	dev_dbg(ipu->dev, "ch %d word 1 - %08X %08X %08X %08X %08X\n", chno,
		readl(&p->word[1].data[0]),
		readl(&p->word[1].data[1]),
		readl(&p->word[1].data[2]),
		readl(&p->word[1].data[3]),
		readl(&p->word[1].data[4]));
	dev_dbg(ipu->dev, "PFS 0x%x, ",
		 ipu_ch_param_read_field(ch, IPU_FIELD_PFS));
	dev_dbg(ipu->dev, "BPP 0x%x, ",
		ipu_ch_param_read_field(ch, IPU_FIELD_BPP));
	dev_dbg(ipu->dev, "NPB 0x%x\n",
		 ipu_ch_param_read_field(ch, IPU_FIELD_NPB));

	dev_dbg(ipu->dev, "FW %d, ",
		 ipu_ch_param_read_field(ch, IPU_FIELD_FW));
	dev_dbg(ipu->dev, "FH %d, ",
		 ipu_ch_param_read_field(ch, IPU_FIELD_FH));
	dev_dbg(ipu->dev, "EBA0 0x%x\n",
		 ipu_ch_param_read_field(ch, IPU_FIELD_EBA0) << 3);
	dev_dbg(ipu->dev, "EBA1 0x%x\n",
		 ipu_ch_param_read_field(ch, IPU_FIELD_EBA1) << 3);
	dev_dbg(ipu->dev, "Stride %d\n",
		 ipu_ch_param_read_field(ch, IPU_FIELD_SL));
	dev_dbg(ipu->dev, "scan_order %d\n",
		 ipu_ch_param_read_field(ch, IPU_FIELD_SO));
	dev_dbg(ipu->dev, "uv_stride %d\n",
		 ipu_ch_param_read_field(ch, IPU_FIELD_SLUV));
	dev_dbg(ipu->dev, "u_offset 0x%x\n",
		 ipu_ch_param_read_field(ch, IPU_FIELD_UBO) << 3);
	dev_dbg(ipu->dev, "v_offset 0x%x\n",
		 ipu_ch_param_read_field(ch, IPU_FIELD_VBO) << 3);

	dev_dbg(ipu->dev, "Width0 %d+1, ",
		 ipu_ch_param_read_field(ch, IPU_FIELD_WID0));
	dev_dbg(ipu->dev, "Width1 %d+1, ",
		 ipu_ch_param_read_field(ch, IPU_FIELD_WID1));
	dev_dbg(ipu->dev, "Width2 %d+1, ",
		 ipu_ch_param_read_field(ch, IPU_FIELD_WID2));
	dev_dbg(ipu->dev, "Width3 %d+1, ",
		 ipu_ch_param_read_field(ch, IPU_FIELD_WID3));
	dev_dbg(ipu->dev, "Offset0 %d, ",
		 ipu_ch_param_read_field(ch, IPU_FIELD_OFS0));
	dev_dbg(ipu->dev, "Offset1 %d, ",
		 ipu_ch_param_read_field(ch, IPU_FIELD_OFS1));
	dev_dbg(ipu->dev, "Offset2 %d, ",
		 ipu_ch_param_read_field(ch, IPU_FIELD_OFS2));
	dev_dbg(ipu->dev, "Offset3 %d\n",
		 ipu_ch_param_read_field(ch, IPU_FIELD_OFS3));
}
EXPORT_SYMBOL_GPL(ipu_cpmem_dump);

int ipu_cpmem_init(struct ipu_soc *ipu, struct device *dev, unsigned long base)
{
	struct ipu_cpmem *cpmem;

	cpmem = devm_kzalloc(dev, sizeof(*cpmem), GFP_KERNEL);
	if (!cpmem)
		return -ENOMEM;

	ipu->cpmem_priv = cpmem;

	spin_lock_init(&cpmem->lock);
	cpmem->base = devm_ioremap(dev, base, SZ_128K);
	if (!cpmem->base)
		return -ENOMEM;

	dev_dbg(dev, "CPMEM base: 0x%08lx remapped to %p\n",
		base, cpmem->base);
	cpmem->ipu = ipu;

	return 0;
}

void ipu_cpmem_exit(struct ipu_soc *ipu)
{
}