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24#include <linux/bitops.h>
25#include <linux/bug.h>
26#include <linux/errno.h>
27#include <linux/export.h>
28#include <linux/hdmi.h>
29#include <linux/string.h>
30#include <linux/device.h>
31
32#define hdmi_log(fmt, ...) dev_printk(level, dev, fmt, ##__VA_ARGS__)
33
34static u8 hdmi_infoframe_checksum(const u8 *ptr, size_t size)
35{
36 u8 csum = 0;
37 size_t i;
38
39
40 for (i = 0; i < size; i++)
41 csum += ptr[i];
42
43 return 256 - csum;
44}
45
46static void hdmi_infoframe_set_checksum(void *buffer, size_t size)
47{
48 u8 *ptr = buffer;
49
50 ptr[3] = hdmi_infoframe_checksum(buffer, size);
51}
52
53
54
55
56
57void hdmi_avi_infoframe_init(struct hdmi_avi_infoframe *frame)
58{
59 memset(frame, 0, sizeof(*frame));
60
61 frame->type = HDMI_INFOFRAME_TYPE_AVI;
62 frame->version = 2;
63 frame->length = HDMI_AVI_INFOFRAME_SIZE;
64}
65EXPORT_SYMBOL(hdmi_avi_infoframe_init);
66
67static int hdmi_avi_infoframe_check_only(const struct hdmi_avi_infoframe *frame)
68{
69 if (frame->type != HDMI_INFOFRAME_TYPE_AVI ||
70 frame->version != 2 ||
71 frame->length != HDMI_AVI_INFOFRAME_SIZE)
72 return -EINVAL;
73
74 if (frame->picture_aspect > HDMI_PICTURE_ASPECT_16_9)
75 return -EINVAL;
76
77 return 0;
78}
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88
89int hdmi_avi_infoframe_check(struct hdmi_avi_infoframe *frame)
90{
91 return hdmi_avi_infoframe_check_only(frame);
92}
93EXPORT_SYMBOL(hdmi_avi_infoframe_check);
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108
109ssize_t hdmi_avi_infoframe_pack_only(const struct hdmi_avi_infoframe *frame,
110 void *buffer, size_t size)
111{
112 u8 *ptr = buffer;
113 size_t length;
114 int ret;
115
116 ret = hdmi_avi_infoframe_check_only(frame);
117 if (ret)
118 return ret;
119
120 length = HDMI_INFOFRAME_HEADER_SIZE + frame->length;
121
122 if (size < length)
123 return -ENOSPC;
124
125 memset(buffer, 0, size);
126
127 ptr[0] = frame->type;
128 ptr[1] = frame->version;
129 ptr[2] = frame->length;
130 ptr[3] = 0;
131
132
133 ptr += HDMI_INFOFRAME_HEADER_SIZE;
134
135 ptr[0] = ((frame->colorspace & 0x3) << 5) | (frame->scan_mode & 0x3);
136
137
138
139
140
141 if (frame->active_aspect & 0xf)
142 ptr[0] |= BIT(4);
143
144
145 if (frame->top_bar || frame->bottom_bar)
146 ptr[0] |= BIT(3);
147
148 if (frame->left_bar || frame->right_bar)
149 ptr[0] |= BIT(2);
150
151 ptr[1] = ((frame->colorimetry & 0x3) << 6) |
152 ((frame->picture_aspect & 0x3) << 4) |
153 (frame->active_aspect & 0xf);
154
155 ptr[2] = ((frame->extended_colorimetry & 0x7) << 4) |
156 ((frame->quantization_range & 0x3) << 2) |
157 (frame->nups & 0x3);
158
159 if (frame->itc)
160 ptr[2] |= BIT(7);
161
162 ptr[3] = frame->video_code & 0x7f;
163
164 ptr[4] = ((frame->ycc_quantization_range & 0x3) << 6) |
165 ((frame->content_type & 0x3) << 4) |
166 (frame->pixel_repeat & 0xf);
167
168 ptr[5] = frame->top_bar & 0xff;
169 ptr[6] = (frame->top_bar >> 8) & 0xff;
170 ptr[7] = frame->bottom_bar & 0xff;
171 ptr[8] = (frame->bottom_bar >> 8) & 0xff;
172 ptr[9] = frame->left_bar & 0xff;
173 ptr[10] = (frame->left_bar >> 8) & 0xff;
174 ptr[11] = frame->right_bar & 0xff;
175 ptr[12] = (frame->right_bar >> 8) & 0xff;
176
177 hdmi_infoframe_set_checksum(buffer, length);
178
179 return length;
180}
181EXPORT_SYMBOL(hdmi_avi_infoframe_pack_only);
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200ssize_t hdmi_avi_infoframe_pack(struct hdmi_avi_infoframe *frame,
201 void *buffer, size_t size)
202{
203 int ret;
204
205 ret = hdmi_avi_infoframe_check(frame);
206 if (ret)
207 return ret;
208
209 return hdmi_avi_infoframe_pack_only(frame, buffer, size);
210}
211EXPORT_SYMBOL(hdmi_avi_infoframe_pack);
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220
221int hdmi_spd_infoframe_init(struct hdmi_spd_infoframe *frame,
222 const char *vendor, const char *product)
223{
224 size_t len;
225
226 memset(frame, 0, sizeof(*frame));
227
228 frame->type = HDMI_INFOFRAME_TYPE_SPD;
229 frame->version = 1;
230 frame->length = HDMI_SPD_INFOFRAME_SIZE;
231
232 len = strlen(vendor);
233 memcpy(frame->vendor, vendor, min(len, sizeof(frame->vendor)));
234 len = strlen(product);
235 memcpy(frame->product, product, min(len, sizeof(frame->product)));
236
237 return 0;
238}
239EXPORT_SYMBOL(hdmi_spd_infoframe_init);
240
241static int hdmi_spd_infoframe_check_only(const struct hdmi_spd_infoframe *frame)
242{
243 if (frame->type != HDMI_INFOFRAME_TYPE_SPD ||
244 frame->version != 1 ||
245 frame->length != HDMI_SPD_INFOFRAME_SIZE)
246 return -EINVAL;
247
248 return 0;
249}
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260int hdmi_spd_infoframe_check(struct hdmi_spd_infoframe *frame)
261{
262 return hdmi_spd_infoframe_check_only(frame);
263}
264EXPORT_SYMBOL(hdmi_spd_infoframe_check);
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280ssize_t hdmi_spd_infoframe_pack_only(const struct hdmi_spd_infoframe *frame,
281 void *buffer, size_t size)
282{
283 u8 *ptr = buffer;
284 size_t length;
285 int ret;
286
287 ret = hdmi_spd_infoframe_check_only(frame);
288 if (ret)
289 return ret;
290
291 length = HDMI_INFOFRAME_HEADER_SIZE + frame->length;
292
293 if (size < length)
294 return -ENOSPC;
295
296 memset(buffer, 0, size);
297
298 ptr[0] = frame->type;
299 ptr[1] = frame->version;
300 ptr[2] = frame->length;
301 ptr[3] = 0;
302
303
304 ptr += HDMI_INFOFRAME_HEADER_SIZE;
305
306 memcpy(ptr, frame->vendor, sizeof(frame->vendor));
307 memcpy(ptr + 8, frame->product, sizeof(frame->product));
308
309 ptr[24] = frame->sdi;
310
311 hdmi_infoframe_set_checksum(buffer, length);
312
313 return length;
314}
315EXPORT_SYMBOL(hdmi_spd_infoframe_pack_only);
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334ssize_t hdmi_spd_infoframe_pack(struct hdmi_spd_infoframe *frame,
335 void *buffer, size_t size)
336{
337 int ret;
338
339 ret = hdmi_spd_infoframe_check(frame);
340 if (ret)
341 return ret;
342
343 return hdmi_spd_infoframe_pack_only(frame, buffer, size);
344}
345EXPORT_SYMBOL(hdmi_spd_infoframe_pack);
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352
353int hdmi_audio_infoframe_init(struct hdmi_audio_infoframe *frame)
354{
355 memset(frame, 0, sizeof(*frame));
356
357 frame->type = HDMI_INFOFRAME_TYPE_AUDIO;
358 frame->version = 1;
359 frame->length = HDMI_AUDIO_INFOFRAME_SIZE;
360
361 return 0;
362}
363EXPORT_SYMBOL(hdmi_audio_infoframe_init);
364
365static int hdmi_audio_infoframe_check_only(const struct hdmi_audio_infoframe *frame)
366{
367 if (frame->type != HDMI_INFOFRAME_TYPE_AUDIO ||
368 frame->version != 1 ||
369 frame->length != HDMI_AUDIO_INFOFRAME_SIZE)
370 return -EINVAL;
371
372 return 0;
373}
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384int hdmi_audio_infoframe_check(struct hdmi_audio_infoframe *frame)
385{
386 return hdmi_audio_infoframe_check_only(frame);
387}
388EXPORT_SYMBOL(hdmi_audio_infoframe_check);
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404ssize_t hdmi_audio_infoframe_pack_only(const struct hdmi_audio_infoframe *frame,
405 void *buffer, size_t size)
406{
407 unsigned char channels;
408 u8 *ptr = buffer;
409 size_t length;
410 int ret;
411
412 ret = hdmi_audio_infoframe_check_only(frame);
413 if (ret)
414 return ret;
415
416 length = HDMI_INFOFRAME_HEADER_SIZE + frame->length;
417
418 if (size < length)
419 return -ENOSPC;
420
421 memset(buffer, 0, size);
422
423 if (frame->channels >= 2)
424 channels = frame->channels - 1;
425 else
426 channels = 0;
427
428 ptr[0] = frame->type;
429 ptr[1] = frame->version;
430 ptr[2] = frame->length;
431 ptr[3] = 0;
432
433
434 ptr += HDMI_INFOFRAME_HEADER_SIZE;
435
436 ptr[0] = ((frame->coding_type & 0xf) << 4) | (channels & 0x7);
437 ptr[1] = ((frame->sample_frequency & 0x7) << 2) |
438 (frame->sample_size & 0x3);
439 ptr[2] = frame->coding_type_ext & 0x1f;
440 ptr[3] = frame->channel_allocation;
441 ptr[4] = (frame->level_shift_value & 0xf) << 3;
442
443 if (frame->downmix_inhibit)
444 ptr[4] |= BIT(7);
445
446 hdmi_infoframe_set_checksum(buffer, length);
447
448 return length;
449}
450EXPORT_SYMBOL(hdmi_audio_infoframe_pack_only);
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469ssize_t hdmi_audio_infoframe_pack(struct hdmi_audio_infoframe *frame,
470 void *buffer, size_t size)
471{
472 int ret;
473
474 ret = hdmi_audio_infoframe_check(frame);
475 if (ret)
476 return ret;
477
478 return hdmi_audio_infoframe_pack_only(frame, buffer, size);
479}
480EXPORT_SYMBOL(hdmi_audio_infoframe_pack);
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487
488int hdmi_vendor_infoframe_init(struct hdmi_vendor_infoframe *frame)
489{
490 memset(frame, 0, sizeof(*frame));
491
492 frame->type = HDMI_INFOFRAME_TYPE_VENDOR;
493 frame->version = 1;
494
495 frame->oui = HDMI_IEEE_OUI;
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501 frame->s3d_struct = HDMI_3D_STRUCTURE_INVALID;
502 frame->length = HDMI_VENDOR_INFOFRAME_SIZE;
503
504 return 0;
505}
506EXPORT_SYMBOL(hdmi_vendor_infoframe_init);
507
508static int hdmi_vendor_infoframe_length(const struct hdmi_vendor_infoframe *frame)
509{
510
511 if (frame->s3d_struct >= HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF)
512 return 6;
513 else if (frame->vic != 0 || frame->s3d_struct != HDMI_3D_STRUCTURE_INVALID)
514 return 5;
515 else
516 return 4;
517}
518
519static int hdmi_vendor_infoframe_check_only(const struct hdmi_vendor_infoframe *frame)
520{
521 if (frame->type != HDMI_INFOFRAME_TYPE_VENDOR ||
522 frame->version != 1 ||
523 frame->oui != HDMI_IEEE_OUI)
524 return -EINVAL;
525
526
527 if (frame->vic != 0 && frame->s3d_struct != HDMI_3D_STRUCTURE_INVALID)
528 return -EINVAL;
529
530 if (frame->length != hdmi_vendor_infoframe_length(frame))
531 return -EINVAL;
532
533 return 0;
534}
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545int hdmi_vendor_infoframe_check(struct hdmi_vendor_infoframe *frame)
546{
547 frame->length = hdmi_vendor_infoframe_length(frame);
548
549 return hdmi_vendor_infoframe_check_only(frame);
550}
551EXPORT_SYMBOL(hdmi_vendor_infoframe_check);
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567ssize_t hdmi_vendor_infoframe_pack_only(const struct hdmi_vendor_infoframe *frame,
568 void *buffer, size_t size)
569{
570 u8 *ptr = buffer;
571 size_t length;
572 int ret;
573
574 ret = hdmi_vendor_infoframe_check_only(frame);
575 if (ret)
576 return ret;
577
578 length = HDMI_INFOFRAME_HEADER_SIZE + frame->length;
579
580 if (size < length)
581 return -ENOSPC;
582
583 memset(buffer, 0, size);
584
585 ptr[0] = frame->type;
586 ptr[1] = frame->version;
587 ptr[2] = frame->length;
588 ptr[3] = 0;
589
590
591 ptr[4] = 0x03;
592 ptr[5] = 0x0c;
593 ptr[6] = 0x00;
594
595 if (frame->s3d_struct != HDMI_3D_STRUCTURE_INVALID) {
596 ptr[7] = 0x2 << 5;
597 ptr[8] = (frame->s3d_struct & 0xf) << 4;
598 if (frame->s3d_struct >= HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF)
599 ptr[9] = (frame->s3d_ext_data & 0xf) << 4;
600 } else if (frame->vic) {
601 ptr[7] = 0x1 << 5;
602 ptr[8] = frame->vic;
603 } else {
604 ptr[7] = 0x0 << 5;
605 }
606
607 hdmi_infoframe_set_checksum(buffer, length);
608
609 return length;
610}
611EXPORT_SYMBOL(hdmi_vendor_infoframe_pack_only);
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630ssize_t hdmi_vendor_infoframe_pack(struct hdmi_vendor_infoframe *frame,
631 void *buffer, size_t size)
632{
633 int ret;
634
635 ret = hdmi_vendor_infoframe_check(frame);
636 if (ret)
637 return ret;
638
639 return hdmi_vendor_infoframe_pack_only(frame, buffer, size);
640}
641EXPORT_SYMBOL(hdmi_vendor_infoframe_pack);
642
643static int
644hdmi_vendor_any_infoframe_check_only(const union hdmi_vendor_any_infoframe *frame)
645{
646 if (frame->any.type != HDMI_INFOFRAME_TYPE_VENDOR ||
647 frame->any.version != 1)
648 return -EINVAL;
649
650 return 0;
651}
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660int hdmi_drm_infoframe_init(struct hdmi_drm_infoframe *frame)
661{
662 memset(frame, 0, sizeof(*frame));
663
664 frame->type = HDMI_INFOFRAME_TYPE_DRM;
665 frame->version = 1;
666 frame->length = HDMI_DRM_INFOFRAME_SIZE;
667
668 return 0;
669}
670EXPORT_SYMBOL(hdmi_drm_infoframe_init);
671
672static int hdmi_drm_infoframe_check_only(const struct hdmi_drm_infoframe *frame)
673{
674 if (frame->type != HDMI_INFOFRAME_TYPE_DRM ||
675 frame->version != 1)
676 return -EINVAL;
677
678 if (frame->length != HDMI_DRM_INFOFRAME_SIZE)
679 return -EINVAL;
680
681 return 0;
682}
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691int hdmi_drm_infoframe_check(struct hdmi_drm_infoframe *frame)
692{
693 return hdmi_drm_infoframe_check_only(frame);
694}
695EXPORT_SYMBOL(hdmi_drm_infoframe_check);
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711ssize_t hdmi_drm_infoframe_pack_only(const struct hdmi_drm_infoframe *frame,
712 void *buffer, size_t size)
713{
714 u8 *ptr = buffer;
715 size_t length;
716 int i;
717
718 length = HDMI_INFOFRAME_HEADER_SIZE + frame->length;
719
720 if (size < length)
721 return -ENOSPC;
722
723 memset(buffer, 0, size);
724
725 ptr[0] = frame->type;
726 ptr[1] = frame->version;
727 ptr[2] = frame->length;
728 ptr[3] = 0;
729
730
731 ptr += HDMI_INFOFRAME_HEADER_SIZE;
732
733 *ptr++ = frame->eotf;
734 *ptr++ = frame->metadata_type;
735
736 for (i = 0; i < 3; i++) {
737 *ptr++ = frame->display_primaries[i].x;
738 *ptr++ = frame->display_primaries[i].x >> 8;
739 *ptr++ = frame->display_primaries[i].y;
740 *ptr++ = frame->display_primaries[i].y >> 8;
741 }
742
743 *ptr++ = frame->white_point.x;
744 *ptr++ = frame->white_point.x >> 8;
745
746 *ptr++ = frame->white_point.y;
747 *ptr++ = frame->white_point.y >> 8;
748
749 *ptr++ = frame->max_display_mastering_luminance;
750 *ptr++ = frame->max_display_mastering_luminance >> 8;
751
752 *ptr++ = frame->min_display_mastering_luminance;
753 *ptr++ = frame->min_display_mastering_luminance >> 8;
754
755 *ptr++ = frame->max_cll;
756 *ptr++ = frame->max_cll >> 8;
757
758 *ptr++ = frame->max_fall;
759 *ptr++ = frame->max_fall >> 8;
760
761 hdmi_infoframe_set_checksum(buffer, length);
762
763 return length;
764}
765EXPORT_SYMBOL(hdmi_drm_infoframe_pack_only);
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784ssize_t hdmi_drm_infoframe_pack(struct hdmi_drm_infoframe *frame,
785 void *buffer, size_t size)
786{
787 int ret;
788
789 ret = hdmi_drm_infoframe_check(frame);
790 if (ret)
791 return ret;
792
793 return hdmi_drm_infoframe_pack_only(frame, buffer, size);
794}
795EXPORT_SYMBOL(hdmi_drm_infoframe_pack);
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799
800static int
801hdmi_vendor_any_infoframe_check(union hdmi_vendor_any_infoframe *frame)
802{
803 int ret;
804
805 ret = hdmi_vendor_any_infoframe_check_only(frame);
806 if (ret)
807 return ret;
808
809
810 if (frame->any.oui != HDMI_IEEE_OUI)
811 return -EINVAL;
812
813 return hdmi_vendor_infoframe_check(&frame->hdmi);
814}
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818
819static ssize_t
820hdmi_vendor_any_infoframe_pack_only(const union hdmi_vendor_any_infoframe *frame,
821 void *buffer, size_t size)
822{
823 int ret;
824
825 ret = hdmi_vendor_any_infoframe_check_only(frame);
826 if (ret)
827 return ret;
828
829
830 if (frame->any.oui != HDMI_IEEE_OUI)
831 return -EINVAL;
832
833 return hdmi_vendor_infoframe_pack_only(&frame->hdmi, buffer, size);
834}
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839
840static ssize_t
841hdmi_vendor_any_infoframe_pack(union hdmi_vendor_any_infoframe *frame,
842 void *buffer, size_t size)
843{
844 int ret;
845
846 ret = hdmi_vendor_any_infoframe_check(frame);
847 if (ret)
848 return ret;
849
850 return hdmi_vendor_any_infoframe_pack_only(frame, buffer, size);
851}
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862int
863hdmi_infoframe_check(union hdmi_infoframe *frame)
864{
865 switch (frame->any.type) {
866 case HDMI_INFOFRAME_TYPE_AVI:
867 return hdmi_avi_infoframe_check(&frame->avi);
868 case HDMI_INFOFRAME_TYPE_SPD:
869 return hdmi_spd_infoframe_check(&frame->spd);
870 case HDMI_INFOFRAME_TYPE_AUDIO:
871 return hdmi_audio_infoframe_check(&frame->audio);
872 case HDMI_INFOFRAME_TYPE_VENDOR:
873 return hdmi_vendor_any_infoframe_check(&frame->vendor);
874 default:
875 WARN(1, "Bad infoframe type %d\n", frame->any.type);
876 return -EINVAL;
877 }
878}
879EXPORT_SYMBOL(hdmi_infoframe_check);
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895ssize_t
896hdmi_infoframe_pack_only(const union hdmi_infoframe *frame, void *buffer, size_t size)
897{
898 ssize_t length;
899
900 switch (frame->any.type) {
901 case HDMI_INFOFRAME_TYPE_AVI:
902 length = hdmi_avi_infoframe_pack_only(&frame->avi,
903 buffer, size);
904 break;
905 case HDMI_INFOFRAME_TYPE_DRM:
906 length = hdmi_drm_infoframe_pack_only(&frame->drm,
907 buffer, size);
908 break;
909 case HDMI_INFOFRAME_TYPE_SPD:
910 length = hdmi_spd_infoframe_pack_only(&frame->spd,
911 buffer, size);
912 break;
913 case HDMI_INFOFRAME_TYPE_AUDIO:
914 length = hdmi_audio_infoframe_pack_only(&frame->audio,
915 buffer, size);
916 break;
917 case HDMI_INFOFRAME_TYPE_VENDOR:
918 length = hdmi_vendor_any_infoframe_pack_only(&frame->vendor,
919 buffer, size);
920 break;
921 default:
922 WARN(1, "Bad infoframe type %d\n", frame->any.type);
923 length = -EINVAL;
924 }
925
926 return length;
927}
928EXPORT_SYMBOL(hdmi_infoframe_pack_only);
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947ssize_t
948hdmi_infoframe_pack(union hdmi_infoframe *frame,
949 void *buffer, size_t size)
950{
951 ssize_t length;
952
953 switch (frame->any.type) {
954 case HDMI_INFOFRAME_TYPE_AVI:
955 length = hdmi_avi_infoframe_pack(&frame->avi, buffer, size);
956 break;
957 case HDMI_INFOFRAME_TYPE_DRM:
958 length = hdmi_drm_infoframe_pack(&frame->drm, buffer, size);
959 break;
960 case HDMI_INFOFRAME_TYPE_SPD:
961 length = hdmi_spd_infoframe_pack(&frame->spd, buffer, size);
962 break;
963 case HDMI_INFOFRAME_TYPE_AUDIO:
964 length = hdmi_audio_infoframe_pack(&frame->audio, buffer, size);
965 break;
966 case HDMI_INFOFRAME_TYPE_VENDOR:
967 length = hdmi_vendor_any_infoframe_pack(&frame->vendor,
968 buffer, size);
969 break;
970 default:
971 WARN(1, "Bad infoframe type %d\n", frame->any.type);
972 length = -EINVAL;
973 }
974
975 return length;
976}
977EXPORT_SYMBOL(hdmi_infoframe_pack);
978
979static const char *hdmi_infoframe_type_get_name(enum hdmi_infoframe_type type)
980{
981 if (type < 0x80 || type > 0x9f)
982 return "Invalid";
983 switch (type) {
984 case HDMI_INFOFRAME_TYPE_VENDOR:
985 return "Vendor";
986 case HDMI_INFOFRAME_TYPE_AVI:
987 return "Auxiliary Video Information (AVI)";
988 case HDMI_INFOFRAME_TYPE_SPD:
989 return "Source Product Description (SPD)";
990 case HDMI_INFOFRAME_TYPE_AUDIO:
991 return "Audio";
992 case HDMI_INFOFRAME_TYPE_DRM:
993 return "Dynamic Range and Mastering";
994 }
995 return "Reserved";
996}
997
998static void hdmi_infoframe_log_header(const char *level,
999 struct device *dev,
1000 const struct hdmi_any_infoframe *frame)
1001{
1002 hdmi_log("HDMI infoframe: %s, version %u, length %u\n",
1003 hdmi_infoframe_type_get_name(frame->type),
1004 frame->version, frame->length);
1005}
1006
1007static const char *hdmi_colorspace_get_name(enum hdmi_colorspace colorspace)
1008{
1009 switch (colorspace) {
1010 case HDMI_COLORSPACE_RGB:
1011 return "RGB";
1012 case HDMI_COLORSPACE_YUV422:
1013 return "YCbCr 4:2:2";
1014 case HDMI_COLORSPACE_YUV444:
1015 return "YCbCr 4:4:4";
1016 case HDMI_COLORSPACE_YUV420:
1017 return "YCbCr 4:2:0";
1018 case HDMI_COLORSPACE_RESERVED4:
1019 return "Reserved (4)";
1020 case HDMI_COLORSPACE_RESERVED5:
1021 return "Reserved (5)";
1022 case HDMI_COLORSPACE_RESERVED6:
1023 return "Reserved (6)";
1024 case HDMI_COLORSPACE_IDO_DEFINED:
1025 return "IDO Defined";
1026 }
1027 return "Invalid";
1028}
1029
1030static const char *hdmi_scan_mode_get_name(enum hdmi_scan_mode scan_mode)
1031{
1032 switch (scan_mode) {
1033 case HDMI_SCAN_MODE_NONE:
1034 return "No Data";
1035 case HDMI_SCAN_MODE_OVERSCAN:
1036 return "Overscan";
1037 case HDMI_SCAN_MODE_UNDERSCAN:
1038 return "Underscan";
1039 case HDMI_SCAN_MODE_RESERVED:
1040 return "Reserved";
1041 }
1042 return "Invalid";
1043}
1044
1045static const char *hdmi_colorimetry_get_name(enum hdmi_colorimetry colorimetry)
1046{
1047 switch (colorimetry) {
1048 case HDMI_COLORIMETRY_NONE:
1049 return "No Data";
1050 case HDMI_COLORIMETRY_ITU_601:
1051 return "ITU601";
1052 case HDMI_COLORIMETRY_ITU_709:
1053 return "ITU709";
1054 case HDMI_COLORIMETRY_EXTENDED:
1055 return "Extended";
1056 }
1057 return "Invalid";
1058}
1059
1060static const char *
1061hdmi_picture_aspect_get_name(enum hdmi_picture_aspect picture_aspect)
1062{
1063 switch (picture_aspect) {
1064 case HDMI_PICTURE_ASPECT_NONE:
1065 return "No Data";
1066 case HDMI_PICTURE_ASPECT_4_3:
1067 return "4:3";
1068 case HDMI_PICTURE_ASPECT_16_9:
1069 return "16:9";
1070 case HDMI_PICTURE_ASPECT_64_27:
1071 return "64:27";
1072 case HDMI_PICTURE_ASPECT_256_135:
1073 return "256:135";
1074 case HDMI_PICTURE_ASPECT_RESERVED:
1075 return "Reserved";
1076 }
1077 return "Invalid";
1078}
1079
1080static const char *
1081hdmi_active_aspect_get_name(enum hdmi_active_aspect active_aspect)
1082{
1083 if (active_aspect < 0 || active_aspect > 0xf)
1084 return "Invalid";
1085
1086 switch (active_aspect) {
1087 case HDMI_ACTIVE_ASPECT_16_9_TOP:
1088 return "16:9 Top";
1089 case HDMI_ACTIVE_ASPECT_14_9_TOP:
1090 return "14:9 Top";
1091 case HDMI_ACTIVE_ASPECT_16_9_CENTER:
1092 return "16:9 Center";
1093 case HDMI_ACTIVE_ASPECT_PICTURE:
1094 return "Same as Picture";
1095 case HDMI_ACTIVE_ASPECT_4_3:
1096 return "4:3";
1097 case HDMI_ACTIVE_ASPECT_16_9:
1098 return "16:9";
1099 case HDMI_ACTIVE_ASPECT_14_9:
1100 return "14:9";
1101 case HDMI_ACTIVE_ASPECT_4_3_SP_14_9:
1102 return "4:3 SP 14:9";
1103 case HDMI_ACTIVE_ASPECT_16_9_SP_14_9:
1104 return "16:9 SP 14:9";
1105 case HDMI_ACTIVE_ASPECT_16_9_SP_4_3:
1106 return "16:9 SP 4:3";
1107 }
1108 return "Reserved";
1109}
1110
1111static const char *
1112hdmi_extended_colorimetry_get_name(enum hdmi_extended_colorimetry ext_col)
1113{
1114 switch (ext_col) {
1115 case HDMI_EXTENDED_COLORIMETRY_XV_YCC_601:
1116 return "xvYCC 601";
1117 case HDMI_EXTENDED_COLORIMETRY_XV_YCC_709:
1118 return "xvYCC 709";
1119 case HDMI_EXTENDED_COLORIMETRY_S_YCC_601:
1120 return "sYCC 601";
1121 case HDMI_EXTENDED_COLORIMETRY_OPYCC_601:
1122 return "opYCC 601";
1123 case HDMI_EXTENDED_COLORIMETRY_OPRGB:
1124 return "opRGB";
1125 case HDMI_EXTENDED_COLORIMETRY_BT2020_CONST_LUM:
1126 return "BT.2020 Constant Luminance";
1127 case HDMI_EXTENDED_COLORIMETRY_BT2020:
1128 return "BT.2020";
1129 case HDMI_EXTENDED_COLORIMETRY_RESERVED:
1130 return "Reserved";
1131 }
1132 return "Invalid";
1133}
1134
1135static const char *
1136hdmi_quantization_range_get_name(enum hdmi_quantization_range qrange)
1137{
1138 switch (qrange) {
1139 case HDMI_QUANTIZATION_RANGE_DEFAULT:
1140 return "Default";
1141 case HDMI_QUANTIZATION_RANGE_LIMITED:
1142 return "Limited";
1143 case HDMI_QUANTIZATION_RANGE_FULL:
1144 return "Full";
1145 case HDMI_QUANTIZATION_RANGE_RESERVED:
1146 return "Reserved";
1147 }
1148 return "Invalid";
1149}
1150
1151static const char *hdmi_nups_get_name(enum hdmi_nups nups)
1152{
1153 switch (nups) {
1154 case HDMI_NUPS_UNKNOWN:
1155 return "Unknown Non-uniform Scaling";
1156 case HDMI_NUPS_HORIZONTAL:
1157 return "Horizontally Scaled";
1158 case HDMI_NUPS_VERTICAL:
1159 return "Vertically Scaled";
1160 case HDMI_NUPS_BOTH:
1161 return "Horizontally and Vertically Scaled";
1162 }
1163 return "Invalid";
1164}
1165
1166static const char *
1167hdmi_ycc_quantization_range_get_name(enum hdmi_ycc_quantization_range qrange)
1168{
1169 switch (qrange) {
1170 case HDMI_YCC_QUANTIZATION_RANGE_LIMITED:
1171 return "Limited";
1172 case HDMI_YCC_QUANTIZATION_RANGE_FULL:
1173 return "Full";
1174 }
1175 return "Invalid";
1176}
1177
1178static const char *
1179hdmi_content_type_get_name(enum hdmi_content_type content_type)
1180{
1181 switch (content_type) {
1182 case HDMI_CONTENT_TYPE_GRAPHICS:
1183 return "Graphics";
1184 case HDMI_CONTENT_TYPE_PHOTO:
1185 return "Photo";
1186 case HDMI_CONTENT_TYPE_CINEMA:
1187 return "Cinema";
1188 case HDMI_CONTENT_TYPE_GAME:
1189 return "Game";
1190 }
1191 return "Invalid";
1192}
1193
1194static void hdmi_avi_infoframe_log(const char *level,
1195 struct device *dev,
1196 const struct hdmi_avi_infoframe *frame)
1197{
1198 hdmi_infoframe_log_header(level, dev,
1199 (const struct hdmi_any_infoframe *)frame);
1200
1201 hdmi_log(" colorspace: %s\n",
1202 hdmi_colorspace_get_name(frame->colorspace));
1203 hdmi_log(" scan mode: %s\n",
1204 hdmi_scan_mode_get_name(frame->scan_mode));
1205 hdmi_log(" colorimetry: %s\n",
1206 hdmi_colorimetry_get_name(frame->colorimetry));
1207 hdmi_log(" picture aspect: %s\n",
1208 hdmi_picture_aspect_get_name(frame->picture_aspect));
1209 hdmi_log(" active aspect: %s\n",
1210 hdmi_active_aspect_get_name(frame->active_aspect));
1211 hdmi_log(" itc: %s\n", frame->itc ? "IT Content" : "No Data");
1212 hdmi_log(" extended colorimetry: %s\n",
1213 hdmi_extended_colorimetry_get_name(frame->extended_colorimetry));
1214 hdmi_log(" quantization range: %s\n",
1215 hdmi_quantization_range_get_name(frame->quantization_range));
1216 hdmi_log(" nups: %s\n", hdmi_nups_get_name(frame->nups));
1217 hdmi_log(" video code: %u\n", frame->video_code);
1218 hdmi_log(" ycc quantization range: %s\n",
1219 hdmi_ycc_quantization_range_get_name(frame->ycc_quantization_range));
1220 hdmi_log(" hdmi content type: %s\n",
1221 hdmi_content_type_get_name(frame->content_type));
1222 hdmi_log(" pixel repeat: %u\n", frame->pixel_repeat);
1223 hdmi_log(" bar top %u, bottom %u, left %u, right %u\n",
1224 frame->top_bar, frame->bottom_bar,
1225 frame->left_bar, frame->right_bar);
1226}
1227
1228static const char *hdmi_spd_sdi_get_name(enum hdmi_spd_sdi sdi)
1229{
1230 if (sdi < 0 || sdi > 0xff)
1231 return "Invalid";
1232 switch (sdi) {
1233 case HDMI_SPD_SDI_UNKNOWN:
1234 return "Unknown";
1235 case HDMI_SPD_SDI_DSTB:
1236 return "Digital STB";
1237 case HDMI_SPD_SDI_DVDP:
1238 return "DVD Player";
1239 case HDMI_SPD_SDI_DVHS:
1240 return "D-VHS";
1241 case HDMI_SPD_SDI_HDDVR:
1242 return "HDD Videorecorder";
1243 case HDMI_SPD_SDI_DVC:
1244 return "DVC";
1245 case HDMI_SPD_SDI_DSC:
1246 return "DSC";
1247 case HDMI_SPD_SDI_VCD:
1248 return "Video CD";
1249 case HDMI_SPD_SDI_GAME:
1250 return "Game";
1251 case HDMI_SPD_SDI_PC:
1252 return "PC General";
1253 case HDMI_SPD_SDI_BD:
1254 return "Blu-Ray Disc (BD)";
1255 case HDMI_SPD_SDI_SACD:
1256 return "Super Audio CD";
1257 case HDMI_SPD_SDI_HDDVD:
1258 return "HD DVD";
1259 case HDMI_SPD_SDI_PMP:
1260 return "PMP";
1261 }
1262 return "Reserved";
1263}
1264
1265static void hdmi_spd_infoframe_log(const char *level,
1266 struct device *dev,
1267 const struct hdmi_spd_infoframe *frame)
1268{
1269 u8 buf[17];
1270
1271 hdmi_infoframe_log_header(level, dev,
1272 (const struct hdmi_any_infoframe *)frame);
1273
1274 memset(buf, 0, sizeof(buf));
1275
1276 strncpy(buf, frame->vendor, 8);
1277 hdmi_log(" vendor: %s\n", buf);
1278 strncpy(buf, frame->product, 16);
1279 hdmi_log(" product: %s\n", buf);
1280 hdmi_log(" source device information: %s (0x%x)\n",
1281 hdmi_spd_sdi_get_name(frame->sdi), frame->sdi);
1282}
1283
1284static const char *
1285hdmi_audio_coding_type_get_name(enum hdmi_audio_coding_type coding_type)
1286{
1287 switch (coding_type) {
1288 case HDMI_AUDIO_CODING_TYPE_STREAM:
1289 return "Refer to Stream Header";
1290 case HDMI_AUDIO_CODING_TYPE_PCM:
1291 return "PCM";
1292 case HDMI_AUDIO_CODING_TYPE_AC3:
1293 return "AC-3";
1294 case HDMI_AUDIO_CODING_TYPE_MPEG1:
1295 return "MPEG1";
1296 case HDMI_AUDIO_CODING_TYPE_MP3:
1297 return "MP3";
1298 case HDMI_AUDIO_CODING_TYPE_MPEG2:
1299 return "MPEG2";
1300 case HDMI_AUDIO_CODING_TYPE_AAC_LC:
1301 return "AAC";
1302 case HDMI_AUDIO_CODING_TYPE_DTS:
1303 return "DTS";
1304 case HDMI_AUDIO_CODING_TYPE_ATRAC:
1305 return "ATRAC";
1306 case HDMI_AUDIO_CODING_TYPE_DSD:
1307 return "One Bit Audio";
1308 case HDMI_AUDIO_CODING_TYPE_EAC3:
1309 return "Dolby Digital +";
1310 case HDMI_AUDIO_CODING_TYPE_DTS_HD:
1311 return "DTS-HD";
1312 case HDMI_AUDIO_CODING_TYPE_MLP:
1313 return "MAT (MLP)";
1314 case HDMI_AUDIO_CODING_TYPE_DST:
1315 return "DST";
1316 case HDMI_AUDIO_CODING_TYPE_WMA_PRO:
1317 return "WMA PRO";
1318 case HDMI_AUDIO_CODING_TYPE_CXT:
1319 return "Refer to CXT";
1320 }
1321 return "Invalid";
1322}
1323
1324static const char *
1325hdmi_audio_sample_size_get_name(enum hdmi_audio_sample_size sample_size)
1326{
1327 switch (sample_size) {
1328 case HDMI_AUDIO_SAMPLE_SIZE_STREAM:
1329 return "Refer to Stream Header";
1330 case HDMI_AUDIO_SAMPLE_SIZE_16:
1331 return "16 bit";
1332 case HDMI_AUDIO_SAMPLE_SIZE_20:
1333 return "20 bit";
1334 case HDMI_AUDIO_SAMPLE_SIZE_24:
1335 return "24 bit";
1336 }
1337 return "Invalid";
1338}
1339
1340static const char *
1341hdmi_audio_sample_frequency_get_name(enum hdmi_audio_sample_frequency freq)
1342{
1343 switch (freq) {
1344 case HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM:
1345 return "Refer to Stream Header";
1346 case HDMI_AUDIO_SAMPLE_FREQUENCY_32000:
1347 return "32 kHz";
1348 case HDMI_AUDIO_SAMPLE_FREQUENCY_44100:
1349 return "44.1 kHz (CD)";
1350 case HDMI_AUDIO_SAMPLE_FREQUENCY_48000:
1351 return "48 kHz";
1352 case HDMI_AUDIO_SAMPLE_FREQUENCY_88200:
1353 return "88.2 kHz";
1354 case HDMI_AUDIO_SAMPLE_FREQUENCY_96000:
1355 return "96 kHz";
1356 case HDMI_AUDIO_SAMPLE_FREQUENCY_176400:
1357 return "176.4 kHz";
1358 case HDMI_AUDIO_SAMPLE_FREQUENCY_192000:
1359 return "192 kHz";
1360 }
1361 return "Invalid";
1362}
1363
1364static const char *
1365hdmi_audio_coding_type_ext_get_name(enum hdmi_audio_coding_type_ext ctx)
1366{
1367 if (ctx < 0 || ctx > 0x1f)
1368 return "Invalid";
1369
1370 switch (ctx) {
1371 case HDMI_AUDIO_CODING_TYPE_EXT_CT:
1372 return "Refer to CT";
1373 case HDMI_AUDIO_CODING_TYPE_EXT_HE_AAC:
1374 return "HE AAC";
1375 case HDMI_AUDIO_CODING_TYPE_EXT_HE_AAC_V2:
1376 return "HE AAC v2";
1377 case HDMI_AUDIO_CODING_TYPE_EXT_MPEG_SURROUND:
1378 return "MPEG SURROUND";
1379 case HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_HE_AAC:
1380 return "MPEG-4 HE AAC";
1381 case HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_HE_AAC_V2:
1382 return "MPEG-4 HE AAC v2";
1383 case HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_AAC_LC:
1384 return "MPEG-4 AAC LC";
1385 case HDMI_AUDIO_CODING_TYPE_EXT_DRA:
1386 return "DRA";
1387 case HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_HE_AAC_SURROUND:
1388 return "MPEG-4 HE AAC + MPEG Surround";
1389 case HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_AAC_LC_SURROUND:
1390 return "MPEG-4 AAC LC + MPEG Surround";
1391 }
1392 return "Reserved";
1393}
1394
1395static void hdmi_audio_infoframe_log(const char *level,
1396 struct device *dev,
1397 const struct hdmi_audio_infoframe *frame)
1398{
1399 hdmi_infoframe_log_header(level, dev,
1400 (const struct hdmi_any_infoframe *)frame);
1401
1402 if (frame->channels)
1403 hdmi_log(" channels: %u\n", frame->channels - 1);
1404 else
1405 hdmi_log(" channels: Refer to stream header\n");
1406 hdmi_log(" coding type: %s\n",
1407 hdmi_audio_coding_type_get_name(frame->coding_type));
1408 hdmi_log(" sample size: %s\n",
1409 hdmi_audio_sample_size_get_name(frame->sample_size));
1410 hdmi_log(" sample frequency: %s\n",
1411 hdmi_audio_sample_frequency_get_name(frame->sample_frequency));
1412 hdmi_log(" coding type ext: %s\n",
1413 hdmi_audio_coding_type_ext_get_name(frame->coding_type_ext));
1414 hdmi_log(" channel allocation: 0x%x\n",
1415 frame->channel_allocation);
1416 hdmi_log(" level shift value: %u dB\n",
1417 frame->level_shift_value);
1418 hdmi_log(" downmix inhibit: %s\n",
1419 frame->downmix_inhibit ? "Yes" : "No");
1420}
1421
1422static void hdmi_drm_infoframe_log(const char *level,
1423 struct device *dev,
1424 const struct hdmi_drm_infoframe *frame)
1425{
1426 int i;
1427
1428 hdmi_infoframe_log_header(level, dev,
1429 (struct hdmi_any_infoframe *)frame);
1430 hdmi_log("length: %d\n", frame->length);
1431 hdmi_log("metadata type: %d\n", frame->metadata_type);
1432 hdmi_log("eotf: %d\n", frame->eotf);
1433 for (i = 0; i < 3; i++) {
1434 hdmi_log("x[%d]: %d\n", i, frame->display_primaries[i].x);
1435 hdmi_log("y[%d]: %d\n", i, frame->display_primaries[i].y);
1436 }
1437
1438 hdmi_log("white point x: %d\n", frame->white_point.x);
1439 hdmi_log("white point y: %d\n", frame->white_point.y);
1440
1441 hdmi_log("max_display_mastering_luminance: %d\n",
1442 frame->max_display_mastering_luminance);
1443 hdmi_log("min_display_mastering_luminance: %d\n",
1444 frame->min_display_mastering_luminance);
1445
1446 hdmi_log("max_cll: %d\n", frame->max_cll);
1447 hdmi_log("max_fall: %d\n", frame->max_fall);
1448}
1449
1450static const char *
1451hdmi_3d_structure_get_name(enum hdmi_3d_structure s3d_struct)
1452{
1453 if (s3d_struct < 0 || s3d_struct > 0xf)
1454 return "Invalid";
1455
1456 switch (s3d_struct) {
1457 case HDMI_3D_STRUCTURE_FRAME_PACKING:
1458 return "Frame Packing";
1459 case HDMI_3D_STRUCTURE_FIELD_ALTERNATIVE:
1460 return "Field Alternative";
1461 case HDMI_3D_STRUCTURE_LINE_ALTERNATIVE:
1462 return "Line Alternative";
1463 case HDMI_3D_STRUCTURE_SIDE_BY_SIDE_FULL:
1464 return "Side-by-side (Full)";
1465 case HDMI_3D_STRUCTURE_L_DEPTH:
1466 return "L + Depth";
1467 case HDMI_3D_STRUCTURE_L_DEPTH_GFX_GFX_DEPTH:
1468 return "L + Depth + Graphics + Graphics-depth";
1469 case HDMI_3D_STRUCTURE_TOP_AND_BOTTOM:
1470 return "Top-and-Bottom";
1471 case HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF:
1472 return "Side-by-side (Half)";
1473 default:
1474 break;
1475 }
1476 return "Reserved";
1477}
1478
1479static void
1480hdmi_vendor_any_infoframe_log(const char *level,
1481 struct device *dev,
1482 const union hdmi_vendor_any_infoframe *frame)
1483{
1484 const struct hdmi_vendor_infoframe *hvf = &frame->hdmi;
1485
1486 hdmi_infoframe_log_header(level, dev,
1487 (const struct hdmi_any_infoframe *)frame);
1488
1489 if (frame->any.oui != HDMI_IEEE_OUI) {
1490 hdmi_log(" not a HDMI vendor infoframe\n");
1491 return;
1492 }
1493 if (hvf->vic == 0 && hvf->s3d_struct == HDMI_3D_STRUCTURE_INVALID) {
1494 hdmi_log(" empty frame\n");
1495 return;
1496 }
1497
1498 if (hvf->vic)
1499 hdmi_log(" HDMI VIC: %u\n", hvf->vic);
1500 if (hvf->s3d_struct != HDMI_3D_STRUCTURE_INVALID) {
1501 hdmi_log(" 3D structure: %s\n",
1502 hdmi_3d_structure_get_name(hvf->s3d_struct));
1503 if (hvf->s3d_struct >= HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF)
1504 hdmi_log(" 3D extension data: %d\n",
1505 hvf->s3d_ext_data);
1506 }
1507}
1508
1509
1510
1511
1512
1513
1514
1515void hdmi_infoframe_log(const char *level,
1516 struct device *dev,
1517 const union hdmi_infoframe *frame)
1518{
1519 switch (frame->any.type) {
1520 case HDMI_INFOFRAME_TYPE_AVI:
1521 hdmi_avi_infoframe_log(level, dev, &frame->avi);
1522 break;
1523 case HDMI_INFOFRAME_TYPE_SPD:
1524 hdmi_spd_infoframe_log(level, dev, &frame->spd);
1525 break;
1526 case HDMI_INFOFRAME_TYPE_AUDIO:
1527 hdmi_audio_infoframe_log(level, dev, &frame->audio);
1528 break;
1529 case HDMI_INFOFRAME_TYPE_VENDOR:
1530 hdmi_vendor_any_infoframe_log(level, dev, &frame->vendor);
1531 break;
1532 case HDMI_INFOFRAME_TYPE_DRM:
1533 hdmi_drm_infoframe_log(level, dev, &frame->drm);
1534 break;
1535 }
1536}
1537EXPORT_SYMBOL(hdmi_infoframe_log);
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552static int hdmi_avi_infoframe_unpack(struct hdmi_avi_infoframe *frame,
1553 const void *buffer, size_t size)
1554{
1555 const u8 *ptr = buffer;
1556
1557 if (size < HDMI_INFOFRAME_SIZE(AVI))
1558 return -EINVAL;
1559
1560 if (ptr[0] != HDMI_INFOFRAME_TYPE_AVI ||
1561 ptr[1] != 2 ||
1562 ptr[2] != HDMI_AVI_INFOFRAME_SIZE)
1563 return -EINVAL;
1564
1565 if (hdmi_infoframe_checksum(buffer, HDMI_INFOFRAME_SIZE(AVI)) != 0)
1566 return -EINVAL;
1567
1568 hdmi_avi_infoframe_init(frame);
1569
1570 ptr += HDMI_INFOFRAME_HEADER_SIZE;
1571
1572 frame->colorspace = (ptr[0] >> 5) & 0x3;
1573 if (ptr[0] & 0x10)
1574 frame->active_aspect = ptr[1] & 0xf;
1575 if (ptr[0] & 0x8) {
1576 frame->top_bar = (ptr[6] << 8) | ptr[5];
1577 frame->bottom_bar = (ptr[8] << 8) | ptr[7];
1578 }
1579 if (ptr[0] & 0x4) {
1580 frame->left_bar = (ptr[10] << 8) | ptr[9];
1581 frame->right_bar = (ptr[12] << 8) | ptr[11];
1582 }
1583 frame->scan_mode = ptr[0] & 0x3;
1584
1585 frame->colorimetry = (ptr[1] >> 6) & 0x3;
1586 frame->picture_aspect = (ptr[1] >> 4) & 0x3;
1587 frame->active_aspect = ptr[1] & 0xf;
1588
1589 frame->itc = ptr[2] & 0x80 ? true : false;
1590 frame->extended_colorimetry = (ptr[2] >> 4) & 0x7;
1591 frame->quantization_range = (ptr[2] >> 2) & 0x3;
1592 frame->nups = ptr[2] & 0x3;
1593
1594 frame->video_code = ptr[3] & 0x7f;
1595 frame->ycc_quantization_range = (ptr[4] >> 6) & 0x3;
1596 frame->content_type = (ptr[4] >> 4) & 0x3;
1597
1598 frame->pixel_repeat = ptr[4] & 0xf;
1599
1600 return 0;
1601}
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616static int hdmi_spd_infoframe_unpack(struct hdmi_spd_infoframe *frame,
1617 const void *buffer, size_t size)
1618{
1619 const u8 *ptr = buffer;
1620 int ret;
1621
1622 if (size < HDMI_INFOFRAME_SIZE(SPD))
1623 return -EINVAL;
1624
1625 if (ptr[0] != HDMI_INFOFRAME_TYPE_SPD ||
1626 ptr[1] != 1 ||
1627 ptr[2] != HDMI_SPD_INFOFRAME_SIZE) {
1628 return -EINVAL;
1629 }
1630
1631 if (hdmi_infoframe_checksum(buffer, HDMI_INFOFRAME_SIZE(SPD)) != 0)
1632 return -EINVAL;
1633
1634 ptr += HDMI_INFOFRAME_HEADER_SIZE;
1635
1636 ret = hdmi_spd_infoframe_init(frame, ptr, ptr + 8);
1637 if (ret)
1638 return ret;
1639
1640 frame->sdi = ptr[24];
1641
1642 return 0;
1643}
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658static int hdmi_audio_infoframe_unpack(struct hdmi_audio_infoframe *frame,
1659 const void *buffer, size_t size)
1660{
1661 const u8 *ptr = buffer;
1662 int ret;
1663
1664 if (size < HDMI_INFOFRAME_SIZE(AUDIO))
1665 return -EINVAL;
1666
1667 if (ptr[0] != HDMI_INFOFRAME_TYPE_AUDIO ||
1668 ptr[1] != 1 ||
1669 ptr[2] != HDMI_AUDIO_INFOFRAME_SIZE) {
1670 return -EINVAL;
1671 }
1672
1673 if (hdmi_infoframe_checksum(buffer, HDMI_INFOFRAME_SIZE(AUDIO)) != 0)
1674 return -EINVAL;
1675
1676 ret = hdmi_audio_infoframe_init(frame);
1677 if (ret)
1678 return ret;
1679
1680 ptr += HDMI_INFOFRAME_HEADER_SIZE;
1681
1682 frame->channels = ptr[0] & 0x7;
1683 frame->coding_type = (ptr[0] >> 4) & 0xf;
1684 frame->sample_size = ptr[1] & 0x3;
1685 frame->sample_frequency = (ptr[1] >> 2) & 0x7;
1686 frame->coding_type_ext = ptr[2] & 0x1f;
1687 frame->channel_allocation = ptr[3];
1688 frame->level_shift_value = (ptr[4] >> 3) & 0xf;
1689 frame->downmix_inhibit = ptr[4] & 0x80 ? true : false;
1690
1691 return 0;
1692}
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708static int
1709hdmi_vendor_any_infoframe_unpack(union hdmi_vendor_any_infoframe *frame,
1710 const void *buffer, size_t size)
1711{
1712 const u8 *ptr = buffer;
1713 size_t length;
1714 int ret;
1715 u8 hdmi_video_format;
1716 struct hdmi_vendor_infoframe *hvf = &frame->hdmi;
1717
1718 if (size < HDMI_INFOFRAME_HEADER_SIZE)
1719 return -EINVAL;
1720
1721 if (ptr[0] != HDMI_INFOFRAME_TYPE_VENDOR ||
1722 ptr[1] != 1 ||
1723 (ptr[2] != 4 && ptr[2] != 5 && ptr[2] != 6))
1724 return -EINVAL;
1725
1726 length = ptr[2];
1727
1728 if (size < HDMI_INFOFRAME_HEADER_SIZE + length)
1729 return -EINVAL;
1730
1731 if (hdmi_infoframe_checksum(buffer,
1732 HDMI_INFOFRAME_HEADER_SIZE + length) != 0)
1733 return -EINVAL;
1734
1735 ptr += HDMI_INFOFRAME_HEADER_SIZE;
1736
1737
1738 if ((ptr[0] != 0x03) ||
1739 (ptr[1] != 0x0c) ||
1740 (ptr[2] != 0x00))
1741 return -EINVAL;
1742
1743 hdmi_video_format = ptr[3] >> 5;
1744
1745 if (hdmi_video_format > 0x2)
1746 return -EINVAL;
1747
1748 ret = hdmi_vendor_infoframe_init(hvf);
1749 if (ret)
1750 return ret;
1751
1752 hvf->length = length;
1753
1754 if (hdmi_video_format == 0x2) {
1755 if (length != 5 && length != 6)
1756 return -EINVAL;
1757 hvf->s3d_struct = ptr[4] >> 4;
1758 if (hvf->s3d_struct >= HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF) {
1759 if (length != 6)
1760 return -EINVAL;
1761 hvf->s3d_ext_data = ptr[5] >> 4;
1762 }
1763 } else if (hdmi_video_format == 0x1) {
1764 if (length != 5)
1765 return -EINVAL;
1766 hvf->vic = ptr[4];
1767 } else {
1768 if (length != 4)
1769 return -EINVAL;
1770 }
1771
1772 return 0;
1773}
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789int hdmi_drm_infoframe_unpack_only(struct hdmi_drm_infoframe *frame,
1790 const void *buffer, size_t size)
1791{
1792 const u8 *ptr = buffer;
1793 const u8 *temp;
1794 u8 x_lsb, x_msb;
1795 u8 y_lsb, y_msb;
1796 int ret;
1797 int i;
1798
1799 if (size < HDMI_DRM_INFOFRAME_SIZE)
1800 return -EINVAL;
1801
1802 ret = hdmi_drm_infoframe_init(frame);
1803 if (ret)
1804 return ret;
1805
1806 frame->eotf = ptr[0] & 0x7;
1807 frame->metadata_type = ptr[1] & 0x7;
1808
1809 temp = ptr + 2;
1810 for (i = 0; i < 3; i++) {
1811 x_lsb = *temp++;
1812 x_msb = *temp++;
1813 frame->display_primaries[i].x = (x_msb << 8) | x_lsb;
1814 y_lsb = *temp++;
1815 y_msb = *temp++;
1816 frame->display_primaries[i].y = (y_msb << 8) | y_lsb;
1817 }
1818
1819 frame->white_point.x = (ptr[15] << 8) | ptr[14];
1820 frame->white_point.y = (ptr[17] << 8) | ptr[16];
1821
1822 frame->max_display_mastering_luminance = (ptr[19] << 8) | ptr[18];
1823 frame->min_display_mastering_luminance = (ptr[21] << 8) | ptr[20];
1824 frame->max_cll = (ptr[23] << 8) | ptr[22];
1825 frame->max_fall = (ptr[25] << 8) | ptr[24];
1826
1827 return 0;
1828}
1829EXPORT_SYMBOL(hdmi_drm_infoframe_unpack_only);
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844static int hdmi_drm_infoframe_unpack(struct hdmi_drm_infoframe *frame,
1845 const void *buffer, size_t size)
1846{
1847 const u8 *ptr = buffer;
1848 int ret;
1849
1850 if (size < HDMI_INFOFRAME_SIZE(DRM))
1851 return -EINVAL;
1852
1853 if (ptr[0] != HDMI_INFOFRAME_TYPE_DRM ||
1854 ptr[1] != 1 ||
1855 ptr[2] != HDMI_DRM_INFOFRAME_SIZE)
1856 return -EINVAL;
1857
1858 if (hdmi_infoframe_checksum(buffer, HDMI_INFOFRAME_SIZE(DRM)) != 0)
1859 return -EINVAL;
1860
1861 ret = hdmi_drm_infoframe_unpack_only(frame, ptr + HDMI_INFOFRAME_HEADER_SIZE,
1862 size - HDMI_INFOFRAME_HEADER_SIZE);
1863 return ret;
1864}
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879int hdmi_infoframe_unpack(union hdmi_infoframe *frame,
1880 const void *buffer, size_t size)
1881{
1882 int ret;
1883 const u8 *ptr = buffer;
1884
1885 if (size < HDMI_INFOFRAME_HEADER_SIZE)
1886 return -EINVAL;
1887
1888 switch (ptr[0]) {
1889 case HDMI_INFOFRAME_TYPE_AVI:
1890 ret = hdmi_avi_infoframe_unpack(&frame->avi, buffer, size);
1891 break;
1892 case HDMI_INFOFRAME_TYPE_DRM:
1893 ret = hdmi_drm_infoframe_unpack(&frame->drm, buffer, size);
1894 break;
1895 case HDMI_INFOFRAME_TYPE_SPD:
1896 ret = hdmi_spd_infoframe_unpack(&frame->spd, buffer, size);
1897 break;
1898 case HDMI_INFOFRAME_TYPE_AUDIO:
1899 ret = hdmi_audio_infoframe_unpack(&frame->audio, buffer, size);
1900 break;
1901 case HDMI_INFOFRAME_TYPE_VENDOR:
1902 ret = hdmi_vendor_any_infoframe_unpack(&frame->vendor, buffer, size);
1903 break;
1904 default:
1905 ret = -EINVAL;
1906 break;
1907 }
1908
1909 return ret;
1910}
1911EXPORT_SYMBOL(hdmi_infoframe_unpack);
1912