Linux kernel mirror (for testing)
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1/*
2 * Copyright (C) 2012 Avionic Design GmbH
3 *
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:
10 *
11 * The above copyright notice and this permission notice (including the
12 * next paragraph) shall be included in all copies or substantial portions
13 * of the Software.
14 *
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.
22 */
23
24#ifndef __LINUX_HDMI_H_
25#define __LINUX_HDMI_H_
26
27#include <linux/types.h>
28#include <linux/device.h>
29
30enum hdmi_packet_type {
31 HDMI_PACKET_TYPE_NULL = 0x00,
32 HDMI_PACKET_TYPE_AUDIO_CLOCK_REGEN = 0x01,
33 HDMI_PACKET_TYPE_AUDIO_SAMPLE = 0x02,
34 HDMI_PACKET_TYPE_GENERAL_CONTROL = 0x03,
35 HDMI_PACKET_TYPE_ACP = 0x04,
36 HDMI_PACKET_TYPE_ISRC1 = 0x05,
37 HDMI_PACKET_TYPE_ISRC2 = 0x06,
38 HDMI_PACKET_TYPE_ONE_BIT_AUDIO_SAMPLE = 0x07,
39 HDMI_PACKET_TYPE_DST_AUDIO = 0x08,
40 HDMI_PACKET_TYPE_HBR_AUDIO_STREAM = 0x09,
41 HDMI_PACKET_TYPE_GAMUT_METADATA = 0x0a,
42 /* + enum hdmi_infoframe_type */
43};
44
45enum hdmi_infoframe_type {
46 HDMI_INFOFRAME_TYPE_VENDOR = 0x81,
47 HDMI_INFOFRAME_TYPE_AVI = 0x82,
48 HDMI_INFOFRAME_TYPE_SPD = 0x83,
49 HDMI_INFOFRAME_TYPE_AUDIO = 0x84,
50 HDMI_INFOFRAME_TYPE_DRM = 0x87,
51};
52
53#define HDMI_IEEE_OUI 0x000c03
54#define HDMI_FORUM_IEEE_OUI 0xc45dd8
55#define HDMI_INFOFRAME_HEADER_SIZE 4
56#define HDMI_AVI_INFOFRAME_SIZE 13
57#define HDMI_SPD_INFOFRAME_SIZE 25
58#define HDMI_AUDIO_INFOFRAME_SIZE 10
59#define HDMI_DRM_INFOFRAME_SIZE 26
60
61#define HDMI_INFOFRAME_SIZE(type) \
62 (HDMI_INFOFRAME_HEADER_SIZE + HDMI_ ## type ## _INFOFRAME_SIZE)
63
64struct hdmi_any_infoframe {
65 enum hdmi_infoframe_type type;
66 unsigned char version;
67 unsigned char length;
68};
69
70enum hdmi_colorspace {
71 HDMI_COLORSPACE_RGB,
72 HDMI_COLORSPACE_YUV422,
73 HDMI_COLORSPACE_YUV444,
74 HDMI_COLORSPACE_YUV420,
75 HDMI_COLORSPACE_RESERVED4,
76 HDMI_COLORSPACE_RESERVED5,
77 HDMI_COLORSPACE_RESERVED6,
78 HDMI_COLORSPACE_IDO_DEFINED,
79};
80
81enum hdmi_scan_mode {
82 HDMI_SCAN_MODE_NONE,
83 HDMI_SCAN_MODE_OVERSCAN,
84 HDMI_SCAN_MODE_UNDERSCAN,
85 HDMI_SCAN_MODE_RESERVED,
86};
87
88enum hdmi_colorimetry {
89 HDMI_COLORIMETRY_NONE,
90 HDMI_COLORIMETRY_ITU_601,
91 HDMI_COLORIMETRY_ITU_709,
92 HDMI_COLORIMETRY_EXTENDED,
93};
94
95enum hdmi_picture_aspect {
96 HDMI_PICTURE_ASPECT_NONE,
97 HDMI_PICTURE_ASPECT_4_3,
98 HDMI_PICTURE_ASPECT_16_9,
99 HDMI_PICTURE_ASPECT_64_27,
100 HDMI_PICTURE_ASPECT_256_135,
101 HDMI_PICTURE_ASPECT_RESERVED,
102};
103
104enum hdmi_active_aspect {
105 HDMI_ACTIVE_ASPECT_16_9_TOP = 2,
106 HDMI_ACTIVE_ASPECT_14_9_TOP = 3,
107 HDMI_ACTIVE_ASPECT_16_9_CENTER = 4,
108 HDMI_ACTIVE_ASPECT_PICTURE = 8,
109 HDMI_ACTIVE_ASPECT_4_3 = 9,
110 HDMI_ACTIVE_ASPECT_16_9 = 10,
111 HDMI_ACTIVE_ASPECT_14_9 = 11,
112 HDMI_ACTIVE_ASPECT_4_3_SP_14_9 = 13,
113 HDMI_ACTIVE_ASPECT_16_9_SP_14_9 = 14,
114 HDMI_ACTIVE_ASPECT_16_9_SP_4_3 = 15,
115};
116
117enum hdmi_extended_colorimetry {
118 HDMI_EXTENDED_COLORIMETRY_XV_YCC_601,
119 HDMI_EXTENDED_COLORIMETRY_XV_YCC_709,
120 HDMI_EXTENDED_COLORIMETRY_S_YCC_601,
121 HDMI_EXTENDED_COLORIMETRY_OPYCC_601,
122 HDMI_EXTENDED_COLORIMETRY_OPRGB,
123
124 /* The following EC values are only defined in CEA-861-F. */
125 HDMI_EXTENDED_COLORIMETRY_BT2020_CONST_LUM,
126 HDMI_EXTENDED_COLORIMETRY_BT2020,
127 HDMI_EXTENDED_COLORIMETRY_RESERVED,
128};
129
130enum hdmi_quantization_range {
131 HDMI_QUANTIZATION_RANGE_DEFAULT,
132 HDMI_QUANTIZATION_RANGE_LIMITED,
133 HDMI_QUANTIZATION_RANGE_FULL,
134 HDMI_QUANTIZATION_RANGE_RESERVED,
135};
136
137/* non-uniform picture scaling */
138enum hdmi_nups {
139 HDMI_NUPS_UNKNOWN,
140 HDMI_NUPS_HORIZONTAL,
141 HDMI_NUPS_VERTICAL,
142 HDMI_NUPS_BOTH,
143};
144
145enum hdmi_ycc_quantization_range {
146 HDMI_YCC_QUANTIZATION_RANGE_LIMITED,
147 HDMI_YCC_QUANTIZATION_RANGE_FULL,
148};
149
150enum hdmi_content_type {
151 HDMI_CONTENT_TYPE_GRAPHICS,
152 HDMI_CONTENT_TYPE_PHOTO,
153 HDMI_CONTENT_TYPE_CINEMA,
154 HDMI_CONTENT_TYPE_GAME,
155};
156
157enum hdmi_metadata_type {
158 HDMI_STATIC_METADATA_TYPE1 = 1,
159};
160
161enum hdmi_eotf {
162 HDMI_EOTF_TRADITIONAL_GAMMA_SDR,
163 HDMI_EOTF_TRADITIONAL_GAMMA_HDR,
164 HDMI_EOTF_SMPTE_ST2084,
165 HDMI_EOTF_BT_2100_HLG,
166};
167
168struct hdmi_avi_infoframe {
169 enum hdmi_infoframe_type type;
170 unsigned char version;
171 unsigned char length;
172 enum hdmi_colorspace colorspace;
173 enum hdmi_scan_mode scan_mode;
174 enum hdmi_colorimetry colorimetry;
175 enum hdmi_picture_aspect picture_aspect;
176 enum hdmi_active_aspect active_aspect;
177 bool itc;
178 enum hdmi_extended_colorimetry extended_colorimetry;
179 enum hdmi_quantization_range quantization_range;
180 enum hdmi_nups nups;
181 unsigned char video_code;
182 enum hdmi_ycc_quantization_range ycc_quantization_range;
183 enum hdmi_content_type content_type;
184 unsigned char pixel_repeat;
185 unsigned short top_bar;
186 unsigned short bottom_bar;
187 unsigned short left_bar;
188 unsigned short right_bar;
189};
190
191/* DRM Infoframe as per CTA 861.G spec */
192struct hdmi_drm_infoframe {
193 enum hdmi_infoframe_type type;
194 unsigned char version;
195 unsigned char length;
196 enum hdmi_eotf eotf;
197 enum hdmi_metadata_type metadata_type;
198 struct {
199 u16 x, y;
200 } display_primaries[3];
201 struct {
202 u16 x, y;
203 } white_point;
204 u16 max_display_mastering_luminance;
205 u16 min_display_mastering_luminance;
206 u16 max_cll;
207 u16 max_fall;
208};
209
210void hdmi_avi_infoframe_init(struct hdmi_avi_infoframe *frame);
211ssize_t hdmi_avi_infoframe_pack(struct hdmi_avi_infoframe *frame, void *buffer,
212 size_t size);
213ssize_t hdmi_avi_infoframe_pack_only(const struct hdmi_avi_infoframe *frame,
214 void *buffer, size_t size);
215int hdmi_avi_infoframe_check(struct hdmi_avi_infoframe *frame);
216int hdmi_drm_infoframe_init(struct hdmi_drm_infoframe *frame);
217ssize_t hdmi_drm_infoframe_pack(struct hdmi_drm_infoframe *frame, void *buffer,
218 size_t size);
219ssize_t hdmi_drm_infoframe_pack_only(const struct hdmi_drm_infoframe *frame,
220 void *buffer, size_t size);
221int hdmi_drm_infoframe_check(struct hdmi_drm_infoframe *frame);
222int hdmi_drm_infoframe_unpack_only(struct hdmi_drm_infoframe *frame,
223 const void *buffer, size_t size);
224
225enum hdmi_spd_sdi {
226 HDMI_SPD_SDI_UNKNOWN,
227 HDMI_SPD_SDI_DSTB,
228 HDMI_SPD_SDI_DVDP,
229 HDMI_SPD_SDI_DVHS,
230 HDMI_SPD_SDI_HDDVR,
231 HDMI_SPD_SDI_DVC,
232 HDMI_SPD_SDI_DSC,
233 HDMI_SPD_SDI_VCD,
234 HDMI_SPD_SDI_GAME,
235 HDMI_SPD_SDI_PC,
236 HDMI_SPD_SDI_BD,
237 HDMI_SPD_SDI_SACD,
238 HDMI_SPD_SDI_HDDVD,
239 HDMI_SPD_SDI_PMP,
240};
241
242struct hdmi_spd_infoframe {
243 enum hdmi_infoframe_type type;
244 unsigned char version;
245 unsigned char length;
246 char vendor[8];
247 char product[16];
248 enum hdmi_spd_sdi sdi;
249};
250
251int hdmi_spd_infoframe_init(struct hdmi_spd_infoframe *frame,
252 const char *vendor, const char *product);
253ssize_t hdmi_spd_infoframe_pack(struct hdmi_spd_infoframe *frame, void *buffer,
254 size_t size);
255ssize_t hdmi_spd_infoframe_pack_only(const struct hdmi_spd_infoframe *frame,
256 void *buffer, size_t size);
257int hdmi_spd_infoframe_check(struct hdmi_spd_infoframe *frame);
258
259enum hdmi_audio_coding_type {
260 HDMI_AUDIO_CODING_TYPE_STREAM,
261 HDMI_AUDIO_CODING_TYPE_PCM,
262 HDMI_AUDIO_CODING_TYPE_AC3,
263 HDMI_AUDIO_CODING_TYPE_MPEG1,
264 HDMI_AUDIO_CODING_TYPE_MP3,
265 HDMI_AUDIO_CODING_TYPE_MPEG2,
266 HDMI_AUDIO_CODING_TYPE_AAC_LC,
267 HDMI_AUDIO_CODING_TYPE_DTS,
268 HDMI_AUDIO_CODING_TYPE_ATRAC,
269 HDMI_AUDIO_CODING_TYPE_DSD,
270 HDMI_AUDIO_CODING_TYPE_EAC3,
271 HDMI_AUDIO_CODING_TYPE_DTS_HD,
272 HDMI_AUDIO_CODING_TYPE_MLP,
273 HDMI_AUDIO_CODING_TYPE_DST,
274 HDMI_AUDIO_CODING_TYPE_WMA_PRO,
275 HDMI_AUDIO_CODING_TYPE_CXT,
276};
277
278enum hdmi_audio_sample_size {
279 HDMI_AUDIO_SAMPLE_SIZE_STREAM,
280 HDMI_AUDIO_SAMPLE_SIZE_16,
281 HDMI_AUDIO_SAMPLE_SIZE_20,
282 HDMI_AUDIO_SAMPLE_SIZE_24,
283};
284
285enum hdmi_audio_sample_frequency {
286 HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM,
287 HDMI_AUDIO_SAMPLE_FREQUENCY_32000,
288 HDMI_AUDIO_SAMPLE_FREQUENCY_44100,
289 HDMI_AUDIO_SAMPLE_FREQUENCY_48000,
290 HDMI_AUDIO_SAMPLE_FREQUENCY_88200,
291 HDMI_AUDIO_SAMPLE_FREQUENCY_96000,
292 HDMI_AUDIO_SAMPLE_FREQUENCY_176400,
293 HDMI_AUDIO_SAMPLE_FREQUENCY_192000,
294};
295
296enum hdmi_audio_coding_type_ext {
297 /* Refer to Audio Coding Type (CT) field in Data Byte 1 */
298 HDMI_AUDIO_CODING_TYPE_EXT_CT,
299
300 /*
301 * The next three CXT values are defined in CEA-861-E only.
302 * They do not exist in older versions, and in CEA-861-F they are
303 * defined as 'Not in use'.
304 */
305 HDMI_AUDIO_CODING_TYPE_EXT_HE_AAC,
306 HDMI_AUDIO_CODING_TYPE_EXT_HE_AAC_V2,
307 HDMI_AUDIO_CODING_TYPE_EXT_MPEG_SURROUND,
308
309 /* The following CXT values are only defined in CEA-861-F. */
310 HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_HE_AAC,
311 HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_HE_AAC_V2,
312 HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_AAC_LC,
313 HDMI_AUDIO_CODING_TYPE_EXT_DRA,
314 HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_HE_AAC_SURROUND,
315 HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_AAC_LC_SURROUND = 10,
316};
317
318struct hdmi_audio_infoframe {
319 enum hdmi_infoframe_type type;
320 unsigned char version;
321 unsigned char length;
322 unsigned char channels;
323 enum hdmi_audio_coding_type coding_type;
324 enum hdmi_audio_sample_size sample_size;
325 enum hdmi_audio_sample_frequency sample_frequency;
326 enum hdmi_audio_coding_type_ext coding_type_ext;
327 unsigned char channel_allocation;
328 unsigned char level_shift_value;
329 bool downmix_inhibit;
330
331};
332
333int hdmi_audio_infoframe_init(struct hdmi_audio_infoframe *frame);
334ssize_t hdmi_audio_infoframe_pack(struct hdmi_audio_infoframe *frame,
335 void *buffer, size_t size);
336ssize_t hdmi_audio_infoframe_pack_only(const struct hdmi_audio_infoframe *frame,
337 void *buffer, size_t size);
338int hdmi_audio_infoframe_check(struct hdmi_audio_infoframe *frame);
339
340enum hdmi_3d_structure {
341 HDMI_3D_STRUCTURE_INVALID = -1,
342 HDMI_3D_STRUCTURE_FRAME_PACKING = 0,
343 HDMI_3D_STRUCTURE_FIELD_ALTERNATIVE,
344 HDMI_3D_STRUCTURE_LINE_ALTERNATIVE,
345 HDMI_3D_STRUCTURE_SIDE_BY_SIDE_FULL,
346 HDMI_3D_STRUCTURE_L_DEPTH,
347 HDMI_3D_STRUCTURE_L_DEPTH_GFX_GFX_DEPTH,
348 HDMI_3D_STRUCTURE_TOP_AND_BOTTOM,
349 HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF = 8,
350};
351
352
353struct hdmi_vendor_infoframe {
354 enum hdmi_infoframe_type type;
355 unsigned char version;
356 unsigned char length;
357 unsigned int oui;
358 u8 vic;
359 enum hdmi_3d_structure s3d_struct;
360 unsigned int s3d_ext_data;
361};
362
363/* HDR Metadata as per 861.G spec */
364struct hdr_static_metadata {
365 __u8 eotf;
366 __u8 metadata_type;
367 __u16 max_cll;
368 __u16 max_fall;
369 __u16 min_cll;
370};
371
372/**
373 * struct hdr_sink_metadata - HDR sink metadata
374 *
375 * Metadata Information read from Sink's EDID
376 */
377struct hdr_sink_metadata {
378 /**
379 * @metadata_type: Static_Metadata_Descriptor_ID.
380 */
381 __u32 metadata_type;
382 /**
383 * @hdmi_type1: HDR Metadata Infoframe.
384 */
385 union {
386 struct hdr_static_metadata hdmi_type1;
387 };
388};
389
390int hdmi_vendor_infoframe_init(struct hdmi_vendor_infoframe *frame);
391ssize_t hdmi_vendor_infoframe_pack(struct hdmi_vendor_infoframe *frame,
392 void *buffer, size_t size);
393ssize_t hdmi_vendor_infoframe_pack_only(const struct hdmi_vendor_infoframe *frame,
394 void *buffer, size_t size);
395int hdmi_vendor_infoframe_check(struct hdmi_vendor_infoframe *frame);
396
397union hdmi_vendor_any_infoframe {
398 struct {
399 enum hdmi_infoframe_type type;
400 unsigned char version;
401 unsigned char length;
402 unsigned int oui;
403 } any;
404 struct hdmi_vendor_infoframe hdmi;
405};
406
407/**
408 * union hdmi_infoframe - overall union of all abstract infoframe representations
409 * @any: generic infoframe
410 * @avi: avi infoframe
411 * @spd: spd infoframe
412 * @vendor: union of all vendor infoframes
413 * @audio: audio infoframe
414 * @drm: Dynamic Range and Mastering infoframe
415 *
416 * This is used by the generic pack function. This works since all infoframes
417 * have the same header which also indicates which type of infoframe should be
418 * packed.
419 */
420union hdmi_infoframe {
421 struct hdmi_any_infoframe any;
422 struct hdmi_avi_infoframe avi;
423 struct hdmi_spd_infoframe spd;
424 union hdmi_vendor_any_infoframe vendor;
425 struct hdmi_audio_infoframe audio;
426 struct hdmi_drm_infoframe drm;
427};
428
429ssize_t hdmi_infoframe_pack(union hdmi_infoframe *frame, void *buffer,
430 size_t size);
431ssize_t hdmi_infoframe_pack_only(const union hdmi_infoframe *frame,
432 void *buffer, size_t size);
433int hdmi_infoframe_check(union hdmi_infoframe *frame);
434int hdmi_infoframe_unpack(union hdmi_infoframe *frame,
435 const void *buffer, size_t size);
436void hdmi_infoframe_log(const char *level, struct device *dev,
437 const union hdmi_infoframe *frame);
438
439#endif /* _DRM_HDMI_H */