2 * Copyright (C) 2012 Avionic Design GmbH
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sub license,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the
12 * next paragraph) shall be included in all copies or substantial portions
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
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>
32 #define hdmi_log(fmt, ...) dev_printk(level, dev, fmt, ##__VA_ARGS__)
34 static u8 hdmi_infoframe_checksum(u8 *ptr, size_t size)
39 /* compute checksum */
40 for (i = 0; i < size; i++)
46 static void hdmi_infoframe_set_checksum(void *buffer, size_t size)
50 ptr[3] = hdmi_infoframe_checksum(buffer, size);
54 * hdmi_avi_infoframe_init() - initialize an HDMI AVI infoframe
55 * @frame: HDMI AVI infoframe
57 * Returns 0 on success or a negative error code on failure.
59 int hdmi_avi_infoframe_init(struct hdmi_avi_infoframe *frame)
61 memset(frame, 0, sizeof(*frame));
63 frame->type = HDMI_INFOFRAME_TYPE_AVI;
65 frame->length = HDMI_AVI_INFOFRAME_SIZE;
69 EXPORT_SYMBOL(hdmi_avi_infoframe_init);
72 * hdmi_avi_infoframe_pack() - write HDMI AVI infoframe to binary buffer
73 * @frame: HDMI AVI infoframe
74 * @buffer: destination buffer
75 * @size: size of buffer
77 * Packs the information contained in the @frame structure into a binary
78 * representation that can be written into the corresponding controller
79 * registers. Also computes the checksum as required by section 5.3.5 of
80 * the HDMI 1.4 specification.
82 * Returns the number of bytes packed into the binary buffer or a negative
83 * error code on failure.
85 ssize_t hdmi_avi_infoframe_pack(struct hdmi_avi_infoframe *frame, void *buffer,
91 length = HDMI_INFOFRAME_HEADER_SIZE + frame->length;
96 memset(buffer, 0, size);
99 ptr[1] = frame->version;
100 ptr[2] = frame->length;
101 ptr[3] = 0; /* checksum */
103 /* start infoframe payload */
104 ptr += HDMI_INFOFRAME_HEADER_SIZE;
106 ptr[0] = ((frame->colorspace & 0x3) << 5) | (frame->scan_mode & 0x3);
109 * Data byte 1, bit 4 has to be set if we provide the active format
112 if (frame->active_aspect & 0xf)
115 /* Bit 3 and 2 indicate if we transmit horizontal/vertical bar data */
116 if (frame->top_bar || frame->bottom_bar)
119 if (frame->left_bar || frame->right_bar)
122 ptr[1] = ((frame->colorimetry & 0x3) << 6) |
123 ((frame->picture_aspect & 0x3) << 4) |
124 (frame->active_aspect & 0xf);
126 ptr[2] = ((frame->extended_colorimetry & 0x7) << 4) |
127 ((frame->quantization_range & 0x3) << 2) |
133 ptr[3] = frame->video_code & 0x7f;
135 ptr[4] = ((frame->ycc_quantization_range & 0x3) << 6) |
136 ((frame->content_type & 0x3) << 4) |
137 (frame->pixel_repeat & 0xf);
139 ptr[5] = frame->top_bar & 0xff;
140 ptr[6] = (frame->top_bar >> 8) & 0xff;
141 ptr[7] = frame->bottom_bar & 0xff;
142 ptr[8] = (frame->bottom_bar >> 8) & 0xff;
143 ptr[9] = frame->left_bar & 0xff;
144 ptr[10] = (frame->left_bar >> 8) & 0xff;
145 ptr[11] = frame->right_bar & 0xff;
146 ptr[12] = (frame->right_bar >> 8) & 0xff;
148 hdmi_infoframe_set_checksum(buffer, length);
152 EXPORT_SYMBOL(hdmi_avi_infoframe_pack);
155 * hdmi_spd_infoframe_init() - initialize an HDMI SPD infoframe
156 * @frame: HDMI SPD infoframe
157 * @vendor: vendor string
158 * @product: product string
160 * Returns 0 on success or a negative error code on failure.
162 int hdmi_spd_infoframe_init(struct hdmi_spd_infoframe *frame,
163 const char *vendor, const char *product)
165 memset(frame, 0, sizeof(*frame));
167 frame->type = HDMI_INFOFRAME_TYPE_SPD;
169 frame->length = HDMI_SPD_INFOFRAME_SIZE;
171 strncpy(frame->vendor, vendor, sizeof(frame->vendor));
172 strncpy(frame->product, product, sizeof(frame->product));
176 EXPORT_SYMBOL(hdmi_spd_infoframe_init);
179 * hdmi_spd_infoframe_pack() - write HDMI SPD infoframe to binary buffer
180 * @frame: HDMI SPD infoframe
181 * @buffer: destination buffer
182 * @size: size of buffer
184 * Packs the information contained in the @frame structure into a binary
185 * representation that can be written into the corresponding controller
186 * registers. Also computes the checksum as required by section 5.3.5 of
187 * the HDMI 1.4 specification.
189 * Returns the number of bytes packed into the binary buffer or a negative
190 * error code on failure.
192 ssize_t hdmi_spd_infoframe_pack(struct hdmi_spd_infoframe *frame, void *buffer,
198 length = HDMI_INFOFRAME_HEADER_SIZE + frame->length;
203 memset(buffer, 0, size);
205 ptr[0] = frame->type;
206 ptr[1] = frame->version;
207 ptr[2] = frame->length;
208 ptr[3] = 0; /* checksum */
210 /* start infoframe payload */
211 ptr += HDMI_INFOFRAME_HEADER_SIZE;
213 memcpy(ptr, frame->vendor, sizeof(frame->vendor));
214 memcpy(ptr + 8, frame->product, sizeof(frame->product));
216 ptr[24] = frame->sdi;
218 hdmi_infoframe_set_checksum(buffer, length);
222 EXPORT_SYMBOL(hdmi_spd_infoframe_pack);
225 * hdmi_audio_infoframe_init() - initialize an HDMI audio infoframe
226 * @frame: HDMI audio infoframe
228 * Returns 0 on success or a negative error code on failure.
230 int hdmi_audio_infoframe_init(struct hdmi_audio_infoframe *frame)
232 memset(frame, 0, sizeof(*frame));
234 frame->type = HDMI_INFOFRAME_TYPE_AUDIO;
236 frame->length = HDMI_AUDIO_INFOFRAME_SIZE;
240 EXPORT_SYMBOL(hdmi_audio_infoframe_init);
243 * hdmi_audio_infoframe_pack() - write HDMI audio infoframe to binary buffer
244 * @frame: HDMI audio infoframe
245 * @buffer: destination buffer
246 * @size: size of buffer
248 * Packs the information contained in the @frame structure into a binary
249 * representation that can be written into the corresponding controller
250 * registers. Also computes the checksum as required by section 5.3.5 of
251 * the HDMI 1.4 specification.
253 * Returns the number of bytes packed into the binary buffer or a negative
254 * error code on failure.
256 ssize_t hdmi_audio_infoframe_pack(struct hdmi_audio_infoframe *frame,
257 void *buffer, size_t size)
259 unsigned char channels;
263 length = HDMI_INFOFRAME_HEADER_SIZE + frame->length;
268 memset(buffer, 0, size);
270 if (frame->channels >= 2)
271 channels = frame->channels - 1;
275 ptr[0] = frame->type;
276 ptr[1] = frame->version;
277 ptr[2] = frame->length;
278 ptr[3] = 0; /* checksum */
280 /* start infoframe payload */
281 ptr += HDMI_INFOFRAME_HEADER_SIZE;
283 ptr[0] = ((frame->coding_type & 0xf) << 4) | (channels & 0x7);
284 ptr[1] = ((frame->sample_frequency & 0x7) << 2) |
285 (frame->sample_size & 0x3);
286 ptr[2] = frame->coding_type_ext & 0x1f;
287 ptr[3] = frame->channel_allocation;
288 ptr[4] = (frame->level_shift_value & 0xf) << 3;
290 if (frame->downmix_inhibit)
293 hdmi_infoframe_set_checksum(buffer, length);
297 EXPORT_SYMBOL(hdmi_audio_infoframe_pack);
300 * hdmi_vendor_infoframe_init() - initialize an HDMI vendor infoframe
301 * @frame: HDMI vendor infoframe
303 * Returns 0 on success or a negative error code on failure.
305 int hdmi_vendor_infoframe_init(struct hdmi_vendor_infoframe *frame)
307 memset(frame, 0, sizeof(*frame));
309 frame->type = HDMI_INFOFRAME_TYPE_VENDOR;
312 frame->oui = HDMI_IEEE_OUI;
315 * 0 is a valid value for s3d_struct, so we use a special "not set"
318 frame->s3d_struct = HDMI_3D_STRUCTURE_INVALID;
322 EXPORT_SYMBOL(hdmi_vendor_infoframe_init);
324 static int hdmi_vendor_infoframe_length(const struct hdmi_vendor_infoframe *frame)
326 /* for side by side (half) we also need to provide 3D_Ext_Data */
327 if (frame->s3d_struct >= HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF)
329 else if (frame->vic != 0 || frame->s3d_struct != HDMI_3D_STRUCTURE_INVALID)
336 * hdmi_vendor_infoframe_pack() - write a HDMI vendor infoframe to binary buffer
337 * @frame: HDMI infoframe
338 * @buffer: destination buffer
339 * @size: size of buffer
341 * Packs the information contained in the @frame structure into a binary
342 * representation that can be written into the corresponding controller
343 * registers. Also computes the checksum as required by section 5.3.5 of
344 * the HDMI 1.4 specification.
346 * Returns the number of bytes packed into the binary buffer or a negative
347 * error code on failure.
349 ssize_t hdmi_vendor_infoframe_pack(struct hdmi_vendor_infoframe *frame,
350 void *buffer, size_t size)
355 /* only one of those can be supplied */
356 if (frame->vic != 0 && frame->s3d_struct != HDMI_3D_STRUCTURE_INVALID)
359 frame->length = hdmi_vendor_infoframe_length(frame);
361 length = HDMI_INFOFRAME_HEADER_SIZE + frame->length;
366 memset(buffer, 0, size);
368 ptr[0] = frame->type;
369 ptr[1] = frame->version;
370 ptr[2] = frame->length;
371 ptr[3] = 0; /* checksum */
378 if (frame->s3d_struct != HDMI_3D_STRUCTURE_INVALID) {
379 ptr[7] = 0x2 << 5; /* video format */
380 ptr[8] = (frame->s3d_struct & 0xf) << 4;
381 if (frame->s3d_struct >= HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF)
382 ptr[9] = (frame->s3d_ext_data & 0xf) << 4;
383 } else if (frame->vic) {
384 ptr[7] = 0x1 << 5; /* video format */
387 ptr[7] = 0x0 << 5; /* video format */
390 hdmi_infoframe_set_checksum(buffer, length);
394 EXPORT_SYMBOL(hdmi_vendor_infoframe_pack);
397 * hdmi_vendor_any_infoframe_pack() - write a vendor infoframe to binary buffer
400 hdmi_vendor_any_infoframe_pack(union hdmi_vendor_any_infoframe *frame,
401 void *buffer, size_t size)
403 /* we only know about HDMI vendor infoframes */
404 if (frame->any.oui != HDMI_IEEE_OUI)
407 return hdmi_vendor_infoframe_pack(&frame->hdmi, buffer, size);
411 * hdmi_infoframe_pack() - write a HDMI infoframe to binary buffer
412 * @frame: HDMI infoframe
413 * @buffer: destination buffer
414 * @size: size of buffer
416 * Packs the information contained in the @frame structure into a binary
417 * representation that can be written into the corresponding controller
418 * registers. Also computes the checksum as required by section 5.3.5 of
419 * the HDMI 1.4 specification.
421 * Returns the number of bytes packed into the binary buffer or a negative
422 * error code on failure.
425 hdmi_infoframe_pack(union hdmi_infoframe *frame, void *buffer, size_t size)
429 switch (frame->any.type) {
430 case HDMI_INFOFRAME_TYPE_AVI:
431 length = hdmi_avi_infoframe_pack(&frame->avi, buffer, size);
433 case HDMI_INFOFRAME_TYPE_SPD:
434 length = hdmi_spd_infoframe_pack(&frame->spd, buffer, size);
436 case HDMI_INFOFRAME_TYPE_AUDIO:
437 length = hdmi_audio_infoframe_pack(&frame->audio, buffer, size);
439 case HDMI_INFOFRAME_TYPE_VENDOR:
440 length = hdmi_vendor_any_infoframe_pack(&frame->vendor,
444 WARN(1, "Bad infoframe type %d\n", frame->any.type);
450 EXPORT_SYMBOL(hdmi_infoframe_pack);
452 static const char *hdmi_infoframe_type_get_name(enum hdmi_infoframe_type type)
454 if (type < 0x80 || type > 0x9f)
457 case HDMI_INFOFRAME_TYPE_VENDOR:
459 case HDMI_INFOFRAME_TYPE_AVI:
460 return "Auxiliary Video Information (AVI)";
461 case HDMI_INFOFRAME_TYPE_SPD:
462 return "Source Product Description (SPD)";
463 case HDMI_INFOFRAME_TYPE_AUDIO:
469 static void hdmi_infoframe_log_header(const char *level,
471 struct hdmi_any_infoframe *frame)
473 hdmi_log("HDMI infoframe: %s, version %u, length %u\n",
474 hdmi_infoframe_type_get_name(frame->type),
475 frame->version, frame->length);
478 static const char *hdmi_colorspace_get_name(enum hdmi_colorspace colorspace)
480 switch (colorspace) {
481 case HDMI_COLORSPACE_RGB:
483 case HDMI_COLORSPACE_YUV422:
484 return "YCbCr 4:2:2";
485 case HDMI_COLORSPACE_YUV444:
486 return "YCbCr 4:4:4";
487 case HDMI_COLORSPACE_YUV420:
488 return "YCbCr 4:2:0";
489 case HDMI_COLORSPACE_RESERVED4:
490 return "Reserved (4)";
491 case HDMI_COLORSPACE_RESERVED5:
492 return "Reserved (5)";
493 case HDMI_COLORSPACE_RESERVED6:
494 return "Reserved (6)";
495 case HDMI_COLORSPACE_IDO_DEFINED:
496 return "IDO Defined";
501 static const char *hdmi_scan_mode_get_name(enum hdmi_scan_mode scan_mode)
504 case HDMI_SCAN_MODE_NONE:
506 case HDMI_SCAN_MODE_OVERSCAN:
508 case HDMI_SCAN_MODE_UNDERSCAN:
510 case HDMI_SCAN_MODE_RESERVED:
516 static const char *hdmi_colorimetry_get_name(enum hdmi_colorimetry colorimetry)
518 switch (colorimetry) {
519 case HDMI_COLORIMETRY_NONE:
521 case HDMI_COLORIMETRY_ITU_601:
523 case HDMI_COLORIMETRY_ITU_709:
525 case HDMI_COLORIMETRY_EXTENDED:
532 hdmi_picture_aspect_get_name(enum hdmi_picture_aspect picture_aspect)
534 switch (picture_aspect) {
535 case HDMI_PICTURE_ASPECT_NONE:
537 case HDMI_PICTURE_ASPECT_4_3:
539 case HDMI_PICTURE_ASPECT_16_9:
541 case HDMI_PICTURE_ASPECT_RESERVED:
548 hdmi_active_aspect_get_name(enum hdmi_active_aspect active_aspect)
550 if (active_aspect < 0 || active_aspect > 0xf)
553 switch (active_aspect) {
554 case HDMI_ACTIVE_ASPECT_16_9_TOP:
556 case HDMI_ACTIVE_ASPECT_14_9_TOP:
558 case HDMI_ACTIVE_ASPECT_16_9_CENTER:
559 return "16:9 Center";
560 case HDMI_ACTIVE_ASPECT_PICTURE:
561 return "Same as Picture";
562 case HDMI_ACTIVE_ASPECT_4_3:
564 case HDMI_ACTIVE_ASPECT_16_9:
566 case HDMI_ACTIVE_ASPECT_14_9:
568 case HDMI_ACTIVE_ASPECT_4_3_SP_14_9:
569 return "4:3 SP 14:9";
570 case HDMI_ACTIVE_ASPECT_16_9_SP_14_9:
571 return "16:9 SP 14:9";
572 case HDMI_ACTIVE_ASPECT_16_9_SP_4_3:
573 return "16:9 SP 4:3";
579 hdmi_extended_colorimetry_get_name(enum hdmi_extended_colorimetry ext_col)
582 case HDMI_EXTENDED_COLORIMETRY_XV_YCC_601:
584 case HDMI_EXTENDED_COLORIMETRY_XV_YCC_709:
586 case HDMI_EXTENDED_COLORIMETRY_S_YCC_601:
588 case HDMI_EXTENDED_COLORIMETRY_ADOBE_YCC_601:
589 return "Adobe YCC 601";
590 case HDMI_EXTENDED_COLORIMETRY_ADOBE_RGB:
592 case HDMI_EXTENDED_COLORIMETRY_BT2020_CONST_LUM:
593 return "BT.2020 Constant Luminance";
594 case HDMI_EXTENDED_COLORIMETRY_BT2020:
596 case HDMI_EXTENDED_COLORIMETRY_RESERVED:
603 hdmi_quantization_range_get_name(enum hdmi_quantization_range qrange)
606 case HDMI_QUANTIZATION_RANGE_DEFAULT:
608 case HDMI_QUANTIZATION_RANGE_LIMITED:
610 case HDMI_QUANTIZATION_RANGE_FULL:
612 case HDMI_QUANTIZATION_RANGE_RESERVED:
618 static const char *hdmi_nups_get_name(enum hdmi_nups nups)
621 case HDMI_NUPS_UNKNOWN:
622 return "Unknown Non-uniform Scaling";
623 case HDMI_NUPS_HORIZONTAL:
624 return "Horizontally Scaled";
625 case HDMI_NUPS_VERTICAL:
626 return "Vertically Scaled";
628 return "Horizontally and Vertically Scaled";
634 hdmi_ycc_quantization_range_get_name(enum hdmi_ycc_quantization_range qrange)
637 case HDMI_YCC_QUANTIZATION_RANGE_LIMITED:
639 case HDMI_YCC_QUANTIZATION_RANGE_FULL:
646 hdmi_content_type_get_name(enum hdmi_content_type content_type)
648 switch (content_type) {
649 case HDMI_CONTENT_TYPE_GRAPHICS:
651 case HDMI_CONTENT_TYPE_PHOTO:
653 case HDMI_CONTENT_TYPE_CINEMA:
655 case HDMI_CONTENT_TYPE_GAME:
662 * hdmi_avi_infoframe_log() - log info of HDMI AVI infoframe
663 * @level: logging level
665 * @frame: HDMI AVI infoframe
667 static void hdmi_avi_infoframe_log(const char *level,
669 struct hdmi_avi_infoframe *frame)
671 hdmi_infoframe_log_header(level, dev,
672 (struct hdmi_any_infoframe *)frame);
674 hdmi_log(" colorspace: %s\n",
675 hdmi_colorspace_get_name(frame->colorspace));
676 hdmi_log(" scan mode: %s\n",
677 hdmi_scan_mode_get_name(frame->scan_mode));
678 hdmi_log(" colorimetry: %s\n",
679 hdmi_colorimetry_get_name(frame->colorimetry));
680 hdmi_log(" picture aspect: %s\n",
681 hdmi_picture_aspect_get_name(frame->picture_aspect));
682 hdmi_log(" active aspect: %s\n",
683 hdmi_active_aspect_get_name(frame->active_aspect));
684 hdmi_log(" itc: %s\n", frame->itc ? "IT Content" : "No Data");
685 hdmi_log(" extended colorimetry: %s\n",
686 hdmi_extended_colorimetry_get_name(frame->extended_colorimetry));
687 hdmi_log(" quantization range: %s\n",
688 hdmi_quantization_range_get_name(frame->quantization_range));
689 hdmi_log(" nups: %s\n", hdmi_nups_get_name(frame->nups));
690 hdmi_log(" video code: %u\n", frame->video_code);
691 hdmi_log(" ycc quantization range: %s\n",
692 hdmi_ycc_quantization_range_get_name(frame->ycc_quantization_range));
693 hdmi_log(" hdmi content type: %s\n",
694 hdmi_content_type_get_name(frame->content_type));
695 hdmi_log(" pixel repeat: %u\n", frame->pixel_repeat);
696 hdmi_log(" bar top %u, bottom %u, left %u, right %u\n",
697 frame->top_bar, frame->bottom_bar,
698 frame->left_bar, frame->right_bar);
701 static const char *hdmi_spd_sdi_get_name(enum hdmi_spd_sdi sdi)
703 if (sdi < 0 || sdi > 0xff)
706 case HDMI_SPD_SDI_UNKNOWN:
708 case HDMI_SPD_SDI_DSTB:
709 return "Digital STB";
710 case HDMI_SPD_SDI_DVDP:
712 case HDMI_SPD_SDI_DVHS:
714 case HDMI_SPD_SDI_HDDVR:
715 return "HDD Videorecorder";
716 case HDMI_SPD_SDI_DVC:
718 case HDMI_SPD_SDI_DSC:
720 case HDMI_SPD_SDI_VCD:
722 case HDMI_SPD_SDI_GAME:
724 case HDMI_SPD_SDI_PC:
726 case HDMI_SPD_SDI_BD:
727 return "Blu-Ray Disc (BD)";
728 case HDMI_SPD_SDI_SACD:
729 return "Super Audio CD";
730 case HDMI_SPD_SDI_HDDVD:
732 case HDMI_SPD_SDI_PMP:
739 * hdmi_spd_infoframe_log() - log info of HDMI SPD infoframe
740 * @level: logging level
742 * @frame: HDMI SPD infoframe
744 static void hdmi_spd_infoframe_log(const char *level,
746 struct hdmi_spd_infoframe *frame)
750 hdmi_infoframe_log_header(level, dev,
751 (struct hdmi_any_infoframe *)frame);
753 memset(buf, 0, sizeof(buf));
755 strncpy(buf, frame->vendor, 8);
756 hdmi_log(" vendor: %s\n", buf);
757 strncpy(buf, frame->product, 16);
758 hdmi_log(" product: %s\n", buf);
759 hdmi_log(" source device information: %s (0x%x)\n",
760 hdmi_spd_sdi_get_name(frame->sdi), frame->sdi);
764 hdmi_audio_coding_type_get_name(enum hdmi_audio_coding_type coding_type)
766 switch (coding_type) {
767 case HDMI_AUDIO_CODING_TYPE_STREAM:
768 return "Refer to Stream Header";
769 case HDMI_AUDIO_CODING_TYPE_PCM:
771 case HDMI_AUDIO_CODING_TYPE_AC3:
773 case HDMI_AUDIO_CODING_TYPE_MPEG1:
775 case HDMI_AUDIO_CODING_TYPE_MP3:
777 case HDMI_AUDIO_CODING_TYPE_MPEG2:
779 case HDMI_AUDIO_CODING_TYPE_AAC_LC:
781 case HDMI_AUDIO_CODING_TYPE_DTS:
783 case HDMI_AUDIO_CODING_TYPE_ATRAC:
785 case HDMI_AUDIO_CODING_TYPE_DSD:
786 return "One Bit Audio";
787 case HDMI_AUDIO_CODING_TYPE_EAC3:
788 return "Dolby Digital +";
789 case HDMI_AUDIO_CODING_TYPE_DTS_HD:
791 case HDMI_AUDIO_CODING_TYPE_MLP:
793 case HDMI_AUDIO_CODING_TYPE_DST:
795 case HDMI_AUDIO_CODING_TYPE_WMA_PRO:
797 case HDMI_AUDIO_CODING_TYPE_CXT:
798 return "Refer to CXT";
804 hdmi_audio_sample_size_get_name(enum hdmi_audio_sample_size sample_size)
806 switch (sample_size) {
807 case HDMI_AUDIO_SAMPLE_SIZE_STREAM:
808 return "Refer to Stream Header";
809 case HDMI_AUDIO_SAMPLE_SIZE_16:
811 case HDMI_AUDIO_SAMPLE_SIZE_20:
813 case HDMI_AUDIO_SAMPLE_SIZE_24:
820 hdmi_audio_sample_frequency_get_name(enum hdmi_audio_sample_frequency freq)
823 case HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM:
824 return "Refer to Stream Header";
825 case HDMI_AUDIO_SAMPLE_FREQUENCY_32000:
827 case HDMI_AUDIO_SAMPLE_FREQUENCY_44100:
828 return "44.1 kHz (CD)";
829 case HDMI_AUDIO_SAMPLE_FREQUENCY_48000:
831 case HDMI_AUDIO_SAMPLE_FREQUENCY_88200:
833 case HDMI_AUDIO_SAMPLE_FREQUENCY_96000:
835 case HDMI_AUDIO_SAMPLE_FREQUENCY_176400:
837 case HDMI_AUDIO_SAMPLE_FREQUENCY_192000:
844 hdmi_audio_coding_type_ext_get_name(enum hdmi_audio_coding_type_ext ctx)
846 if (ctx < 0 || ctx > 0x1f)
850 case HDMI_AUDIO_CODING_TYPE_EXT_CT:
851 return "Refer to CT";
852 case HDMI_AUDIO_CODING_TYPE_EXT_HE_AAC:
854 case HDMI_AUDIO_CODING_TYPE_EXT_HE_AAC_V2:
856 case HDMI_AUDIO_CODING_TYPE_EXT_MPEG_SURROUND:
857 return "MPEG SURROUND";
858 case HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_HE_AAC:
859 return "MPEG-4 HE AAC";
860 case HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_HE_AAC_V2:
861 return "MPEG-4 HE AAC v2";
862 case HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_AAC_LC:
863 return "MPEG-4 AAC LC";
864 case HDMI_AUDIO_CODING_TYPE_EXT_DRA:
866 case HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_HE_AAC_SURROUND:
867 return "MPEG-4 HE AAC + MPEG Surround";
868 case HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_AAC_LC_SURROUND:
869 return "MPEG-4 AAC LC + MPEG Surround";
875 * hdmi_audio_infoframe_log() - log info of HDMI AUDIO infoframe
876 * @level: logging level
878 * @frame: HDMI AUDIO infoframe
880 static void hdmi_audio_infoframe_log(const char *level,
882 struct hdmi_audio_infoframe *frame)
884 hdmi_infoframe_log_header(level, dev,
885 (struct hdmi_any_infoframe *)frame);
888 hdmi_log(" channels: %u\n", frame->channels - 1);
890 hdmi_log(" channels: Refer to stream header\n");
891 hdmi_log(" coding type: %s\n",
892 hdmi_audio_coding_type_get_name(frame->coding_type));
893 hdmi_log(" sample size: %s\n",
894 hdmi_audio_sample_size_get_name(frame->sample_size));
895 hdmi_log(" sample frequency: %s\n",
896 hdmi_audio_sample_frequency_get_name(frame->sample_frequency));
897 hdmi_log(" coding type ext: %s\n",
898 hdmi_audio_coding_type_ext_get_name(frame->coding_type_ext));
899 hdmi_log(" channel allocation: 0x%x\n",
900 frame->channel_allocation);
901 hdmi_log(" level shift value: %u dB\n",
902 frame->level_shift_value);
903 hdmi_log(" downmix inhibit: %s\n",
904 frame->downmix_inhibit ? "Yes" : "No");
908 hdmi_3d_structure_get_name(enum hdmi_3d_structure s3d_struct)
910 if (s3d_struct < 0 || s3d_struct > 0xf)
913 switch (s3d_struct) {
914 case HDMI_3D_STRUCTURE_FRAME_PACKING:
915 return "Frame Packing";
916 case HDMI_3D_STRUCTURE_FIELD_ALTERNATIVE:
917 return "Field Alternative";
918 case HDMI_3D_STRUCTURE_LINE_ALTERNATIVE:
919 return "Line Alternative";
920 case HDMI_3D_STRUCTURE_SIDE_BY_SIDE_FULL:
921 return "Side-by-side (Full)";
922 case HDMI_3D_STRUCTURE_L_DEPTH:
924 case HDMI_3D_STRUCTURE_L_DEPTH_GFX_GFX_DEPTH:
925 return "L + Depth + Graphics + Graphics-depth";
926 case HDMI_3D_STRUCTURE_TOP_AND_BOTTOM:
927 return "Top-and-Bottom";
928 case HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF:
929 return "Side-by-side (Half)";
937 * hdmi_vendor_infoframe_log() - log info of HDMI VENDOR infoframe
938 * @level: logging level
940 * @frame: HDMI VENDOR infoframe
943 hdmi_vendor_any_infoframe_log(const char *level,
945 union hdmi_vendor_any_infoframe *frame)
947 struct hdmi_vendor_infoframe *hvf = &frame->hdmi;
949 hdmi_infoframe_log_header(level, dev,
950 (struct hdmi_any_infoframe *)frame);
952 if (frame->any.oui != HDMI_IEEE_OUI) {
953 hdmi_log(" not a HDMI vendor infoframe\n");
956 if (hvf->vic == 0 && hvf->s3d_struct == HDMI_3D_STRUCTURE_INVALID) {
957 hdmi_log(" empty frame\n");
962 hdmi_log(" HDMI VIC: %u\n", hvf->vic);
963 if (hvf->s3d_struct != HDMI_3D_STRUCTURE_INVALID) {
964 hdmi_log(" 3D structure: %s\n",
965 hdmi_3d_structure_get_name(hvf->s3d_struct));
966 if (hvf->s3d_struct >= HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF)
967 hdmi_log(" 3D extension data: %d\n",
973 * hdmi_infoframe_log() - log info of HDMI infoframe
974 * @level: logging level
976 * @frame: HDMI infoframe
978 void hdmi_infoframe_log(const char *level,
980 union hdmi_infoframe *frame)
982 switch (frame->any.type) {
983 case HDMI_INFOFRAME_TYPE_AVI:
984 hdmi_avi_infoframe_log(level, dev, &frame->avi);
986 case HDMI_INFOFRAME_TYPE_SPD:
987 hdmi_spd_infoframe_log(level, dev, &frame->spd);
989 case HDMI_INFOFRAME_TYPE_AUDIO:
990 hdmi_audio_infoframe_log(level, dev, &frame->audio);
992 case HDMI_INFOFRAME_TYPE_VENDOR:
993 hdmi_vendor_any_infoframe_log(level, dev, &frame->vendor);
997 EXPORT_SYMBOL(hdmi_infoframe_log);
1000 * hdmi_avi_infoframe_unpack() - unpack binary buffer to a HDMI AVI infoframe
1001 * @buffer: source buffer
1002 * @frame: HDMI AVI infoframe
1004 * Unpacks the information contained in binary @buffer into a structured
1005 * @frame of the HDMI Auxiliary Video (AVI) information frame.
1006 * Also verifies the checksum as required by section 5.3.5 of the HDMI 1.4
1009 * Returns 0 on success or a negative error code on failure.
1011 static int hdmi_avi_infoframe_unpack(struct hdmi_avi_infoframe *frame,
1017 if (ptr[0] != HDMI_INFOFRAME_TYPE_AVI ||
1019 ptr[2] != HDMI_AVI_INFOFRAME_SIZE)
1022 if (hdmi_infoframe_checksum(buffer, HDMI_INFOFRAME_SIZE(AVI)) != 0)
1025 ret = hdmi_avi_infoframe_init(frame);
1029 ptr += HDMI_INFOFRAME_HEADER_SIZE;
1031 frame->colorspace = (ptr[0] >> 5) & 0x3;
1033 frame->active_aspect = ptr[1] & 0xf;
1035 frame->top_bar = (ptr[6] << 8) | ptr[5];
1036 frame->bottom_bar = (ptr[8] << 8) | ptr[7];
1039 frame->left_bar = (ptr[10] << 8) | ptr[9];
1040 frame->right_bar = (ptr[12] << 8) | ptr[11];
1042 frame->scan_mode = ptr[0] & 0x3;
1044 frame->colorimetry = (ptr[1] >> 6) & 0x3;
1045 frame->picture_aspect = (ptr[1] >> 4) & 0x3;
1046 frame->active_aspect = ptr[1] & 0xf;
1048 frame->itc = ptr[2] & 0x80 ? true : false;
1049 frame->extended_colorimetry = (ptr[2] >> 4) & 0x7;
1050 frame->quantization_range = (ptr[2] >> 2) & 0x3;
1051 frame->nups = ptr[2] & 0x3;
1053 frame->video_code = ptr[3] & 0x7f;
1054 frame->ycc_quantization_range = (ptr[4] >> 6) & 0x3;
1055 frame->content_type = (ptr[4] >> 4) & 0x3;
1057 frame->pixel_repeat = ptr[4] & 0xf;
1063 * hdmi_spd_infoframe_unpack() - unpack binary buffer to a HDMI SPD infoframe
1064 * @buffer: source buffer
1065 * @frame: HDMI SPD infoframe
1067 * Unpacks the information contained in binary @buffer into a structured
1068 * @frame of the HDMI Source Product Description (SPD) information frame.
1069 * Also verifies the checksum as required by section 5.3.5 of the HDMI 1.4
1072 * Returns 0 on success or a negative error code on failure.
1074 static int hdmi_spd_infoframe_unpack(struct hdmi_spd_infoframe *frame,
1080 if (ptr[0] != HDMI_INFOFRAME_TYPE_SPD ||
1082 ptr[2] != HDMI_SPD_INFOFRAME_SIZE) {
1086 if (hdmi_infoframe_checksum(buffer, HDMI_INFOFRAME_SIZE(SPD)) != 0)
1089 ptr += HDMI_INFOFRAME_HEADER_SIZE;
1091 ret = hdmi_spd_infoframe_init(frame, ptr, ptr + 8);
1095 frame->sdi = ptr[24];
1101 * hdmi_audio_infoframe_unpack() - unpack binary buffer to a HDMI AUDIO infoframe
1102 * @buffer: source buffer
1103 * @frame: HDMI Audio infoframe
1105 * Unpacks the information contained in binary @buffer into a structured
1106 * @frame of the HDMI Audio information frame.
1107 * Also verifies the checksum as required by section 5.3.5 of the HDMI 1.4
1110 * Returns 0 on success or a negative error code on failure.
1112 static int hdmi_audio_infoframe_unpack(struct hdmi_audio_infoframe *frame,
1118 if (ptr[0] != HDMI_INFOFRAME_TYPE_AUDIO ||
1120 ptr[2] != HDMI_AUDIO_INFOFRAME_SIZE) {
1124 if (hdmi_infoframe_checksum(buffer, HDMI_INFOFRAME_SIZE(AUDIO)) != 0)
1127 ret = hdmi_audio_infoframe_init(frame);
1131 ptr += HDMI_INFOFRAME_HEADER_SIZE;
1133 frame->channels = ptr[0] & 0x7;
1134 frame->coding_type = (ptr[0] >> 4) & 0xf;
1135 frame->sample_size = ptr[1] & 0x3;
1136 frame->sample_frequency = (ptr[1] >> 2) & 0x7;
1137 frame->coding_type_ext = ptr[2] & 0x1f;
1138 frame->channel_allocation = ptr[3];
1139 frame->level_shift_value = (ptr[4] >> 3) & 0xf;
1140 frame->downmix_inhibit = ptr[4] & 0x80 ? true : false;
1146 * hdmi_vendor_infoframe_unpack() - unpack binary buffer to a HDMI vendor infoframe
1147 * @buffer: source buffer
1148 * @frame: HDMI Vendor infoframe
1150 * Unpacks the information contained in binary @buffer into a structured
1151 * @frame of the HDMI Vendor information frame.
1152 * Also verifies the checksum as required by section 5.3.5 of the HDMI 1.4
1155 * Returns 0 on success or a negative error code on failure.
1158 hdmi_vendor_any_infoframe_unpack(union hdmi_vendor_any_infoframe *frame,
1164 u8 hdmi_video_format;
1165 struct hdmi_vendor_infoframe *hvf = &frame->hdmi;
1167 if (ptr[0] != HDMI_INFOFRAME_TYPE_VENDOR ||
1169 (ptr[2] != 4 && ptr[2] != 5 && ptr[2] != 6))
1174 if (hdmi_infoframe_checksum(buffer,
1175 HDMI_INFOFRAME_HEADER_SIZE + length) != 0)
1178 ptr += HDMI_INFOFRAME_HEADER_SIZE;
1181 if ((ptr[0] != 0x03) ||
1186 hdmi_video_format = ptr[3] >> 5;
1188 if (hdmi_video_format > 0x2)
1191 ret = hdmi_vendor_infoframe_init(hvf);
1195 hvf->length = length;
1197 if (hdmi_video_format == 0x2) {
1198 if (length != 5 && length != 6)
1200 hvf->s3d_struct = ptr[4] >> 4;
1201 if (hvf->s3d_struct >= HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF) {
1204 hvf->s3d_ext_data = ptr[5] >> 4;
1206 } else if (hdmi_video_format == 0x1) {
1219 * hdmi_infoframe_unpack() - unpack binary buffer to a HDMI infoframe
1220 * @buffer: source buffer
1221 * @frame: HDMI infoframe
1223 * Unpacks the information contained in binary buffer @buffer into a structured
1224 * @frame of a HDMI infoframe.
1225 * Also verifies the checksum as required by section 5.3.5 of the HDMI 1.4
1228 * Returns 0 on success or a negative error code on failure.
1230 int hdmi_infoframe_unpack(union hdmi_infoframe *frame, void *buffer)
1236 case HDMI_INFOFRAME_TYPE_AVI:
1237 ret = hdmi_avi_infoframe_unpack(&frame->avi, buffer);
1239 case HDMI_INFOFRAME_TYPE_SPD:
1240 ret = hdmi_spd_infoframe_unpack(&frame->spd, buffer);
1242 case HDMI_INFOFRAME_TYPE_AUDIO:
1243 ret = hdmi_audio_infoframe_unpack(&frame->audio, buffer);
1245 case HDMI_INFOFRAME_TYPE_VENDOR:
1246 ret = hdmi_vendor_any_infoframe_unpack(&frame->vendor, buffer);
1255 EXPORT_SYMBOL(hdmi_infoframe_unpack);