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 | #include <drm/display/drm_dp.h> |
25 | #include <linux/bitops.h> |
26 | #include <linux/bug.h> |
27 | #include <linux/errno.h> |
28 | #include <linux/export.h> |
29 | #include <linux/hdmi.h> |
30 | #include <linux/string.h> |
31 | #include <linux/device.h> |
32 | |
33 | #define hdmi_log(fmt, ...) dev_printk(level, dev, fmt, ##__VA_ARGS__) |
34 | |
35 | static u8 hdmi_infoframe_checksum(const u8 *ptr, size_t size) |
36 | { |
37 | u8 csum = 0; |
38 | size_t i; |
39 | |
40 | /* compute checksum */ |
41 | for (i = 0; i < size; i++) |
42 | csum += ptr[i]; |
43 | |
44 | return 256 - csum; |
45 | } |
46 | |
47 | static void hdmi_infoframe_set_checksum(void *buffer, size_t size) |
48 | { |
49 | u8 *ptr = buffer; |
50 | |
51 | ptr[3] = hdmi_infoframe_checksum(ptr: buffer, size); |
52 | } |
53 | |
54 | /** |
55 | * hdmi_avi_infoframe_init() - initialize an HDMI AVI infoframe |
56 | * @frame: HDMI AVI infoframe |
57 | */ |
58 | void hdmi_avi_infoframe_init(struct hdmi_avi_infoframe *frame) |
59 | { |
60 | memset(frame, 0, sizeof(*frame)); |
61 | |
62 | frame->type = HDMI_INFOFRAME_TYPE_AVI; |
63 | frame->version = 2; |
64 | frame->length = HDMI_AVI_INFOFRAME_SIZE; |
65 | } |
66 | EXPORT_SYMBOL(hdmi_avi_infoframe_init); |
67 | |
68 | static int hdmi_avi_infoframe_check_only(const struct hdmi_avi_infoframe *frame) |
69 | { |
70 | if (frame->type != HDMI_INFOFRAME_TYPE_AVI || |
71 | frame->version != 2 || |
72 | frame->length != HDMI_AVI_INFOFRAME_SIZE) |
73 | return -EINVAL; |
74 | |
75 | if (frame->picture_aspect > HDMI_PICTURE_ASPECT_16_9) |
76 | return -EINVAL; |
77 | |
78 | return 0; |
79 | } |
80 | |
81 | /** |
82 | * hdmi_avi_infoframe_check() - check a HDMI AVI infoframe |
83 | * @frame: HDMI AVI infoframe |
84 | * |
85 | * Validates that the infoframe is consistent and updates derived fields |
86 | * (eg. length) based on other fields. |
87 | * |
88 | * Returns 0 on success or a negative error code on failure. |
89 | */ |
90 | int hdmi_avi_infoframe_check(struct hdmi_avi_infoframe *frame) |
91 | { |
92 | return hdmi_avi_infoframe_check_only(frame); |
93 | } |
94 | EXPORT_SYMBOL(hdmi_avi_infoframe_check); |
95 | |
96 | /** |
97 | * hdmi_avi_infoframe_pack_only() - write HDMI AVI infoframe to binary buffer |
98 | * @frame: HDMI AVI infoframe |
99 | * @buffer: destination buffer |
100 | * @size: size of buffer |
101 | * |
102 | * Packs the information contained in the @frame structure into a binary |
103 | * representation that can be written into the corresponding controller |
104 | * registers. Also computes the checksum as required by section 5.3.5 of |
105 | * the HDMI 1.4 specification. |
106 | * |
107 | * Returns the number of bytes packed into the binary buffer or a negative |
108 | * error code on failure. |
109 | */ |
110 | ssize_t hdmi_avi_infoframe_pack_only(const struct hdmi_avi_infoframe *frame, |
111 | void *buffer, size_t size) |
112 | { |
113 | u8 *ptr = buffer; |
114 | size_t length; |
115 | int ret; |
116 | |
117 | ret = hdmi_avi_infoframe_check_only(frame); |
118 | if (ret) |
119 | return ret; |
120 | |
121 | length = HDMI_INFOFRAME_HEADER_SIZE + frame->length; |
122 | |
123 | if (size < length) |
124 | return -ENOSPC; |
125 | |
126 | memset(buffer, 0, size); |
127 | |
128 | ptr[0] = frame->type; |
129 | ptr[1] = frame->version; |
130 | ptr[2] = frame->length; |
131 | ptr[3] = 0; /* checksum */ |
132 | |
133 | /* start infoframe payload */ |
134 | ptr += HDMI_INFOFRAME_HEADER_SIZE; |
135 | |
136 | ptr[0] = ((frame->colorspace & 0x3) << 5) | (frame->scan_mode & 0x3); |
137 | |
138 | /* |
139 | * Data byte 1, bit 4 has to be set if we provide the active format |
140 | * aspect ratio |
141 | */ |
142 | if (frame->active_aspect & 0xf) |
143 | ptr[0] |= BIT(4); |
144 | |
145 | /* Bit 3 and 2 indicate if we transmit horizontal/vertical bar data */ |
146 | if (frame->top_bar || frame->bottom_bar) |
147 | ptr[0] |= BIT(3); |
148 | |
149 | if (frame->left_bar || frame->right_bar) |
150 | ptr[0] |= BIT(2); |
151 | |
152 | ptr[1] = ((frame->colorimetry & 0x3) << 6) | |
153 | ((frame->picture_aspect & 0x3) << 4) | |
154 | (frame->active_aspect & 0xf); |
155 | |
156 | ptr[2] = ((frame->extended_colorimetry & 0x7) << 4) | |
157 | ((frame->quantization_range & 0x3) << 2) | |
158 | (frame->nups & 0x3); |
159 | |
160 | if (frame->itc) |
161 | ptr[2] |= BIT(7); |
162 | |
163 | ptr[3] = frame->video_code & 0x7f; |
164 | |
165 | ptr[4] = ((frame->ycc_quantization_range & 0x3) << 6) | |
166 | ((frame->content_type & 0x3) << 4) | |
167 | (frame->pixel_repeat & 0xf); |
168 | |
169 | ptr[5] = frame->top_bar & 0xff; |
170 | ptr[6] = (frame->top_bar >> 8) & 0xff; |
171 | ptr[7] = frame->bottom_bar & 0xff; |
172 | ptr[8] = (frame->bottom_bar >> 8) & 0xff; |
173 | ptr[9] = frame->left_bar & 0xff; |
174 | ptr[10] = (frame->left_bar >> 8) & 0xff; |
175 | ptr[11] = frame->right_bar & 0xff; |
176 | ptr[12] = (frame->right_bar >> 8) & 0xff; |
177 | |
178 | hdmi_infoframe_set_checksum(buffer, size: length); |
179 | |
180 | return length; |
181 | } |
182 | EXPORT_SYMBOL(hdmi_avi_infoframe_pack_only); |
183 | |
184 | /** |
185 | * hdmi_avi_infoframe_pack() - check a HDMI AVI infoframe, |
186 | * and write it to binary buffer |
187 | * @frame: HDMI AVI infoframe |
188 | * @buffer: destination buffer |
189 | * @size: size of buffer |
190 | * |
191 | * Validates that the infoframe is consistent and updates derived fields |
192 | * (eg. length) based on other fields, after which it packs the information |
193 | * contained in the @frame structure into a binary representation that |
194 | * can be written into the corresponding controller registers. This function |
195 | * also computes the checksum as required by section 5.3.5 of the HDMI 1.4 |
196 | * specification. |
197 | * |
198 | * Returns the number of bytes packed into the binary buffer or a negative |
199 | * error code on failure. |
200 | */ |
201 | ssize_t hdmi_avi_infoframe_pack(struct hdmi_avi_infoframe *frame, |
202 | void *buffer, size_t size) |
203 | { |
204 | int ret; |
205 | |
206 | ret = hdmi_avi_infoframe_check(frame); |
207 | if (ret) |
208 | return ret; |
209 | |
210 | return hdmi_avi_infoframe_pack_only(frame, buffer, size); |
211 | } |
212 | EXPORT_SYMBOL(hdmi_avi_infoframe_pack); |
213 | |
214 | /** |
215 | * hdmi_spd_infoframe_init() - initialize an HDMI SPD infoframe |
216 | * @frame: HDMI SPD infoframe |
217 | * @vendor: vendor string |
218 | * @product: product string |
219 | * |
220 | * Returns 0 on success or a negative error code on failure. |
221 | */ |
222 | int hdmi_spd_infoframe_init(struct hdmi_spd_infoframe *frame, |
223 | const char *vendor, const char *product) |
224 | { |
225 | size_t len; |
226 | |
227 | memset(frame, 0, sizeof(*frame)); |
228 | |
229 | frame->type = HDMI_INFOFRAME_TYPE_SPD; |
230 | frame->version = 1; |
231 | frame->length = HDMI_SPD_INFOFRAME_SIZE; |
232 | |
233 | len = strlen(vendor); |
234 | memcpy(frame->vendor, vendor, min(len, sizeof(frame->vendor))); |
235 | len = strlen(product); |
236 | memcpy(frame->product, product, min(len, sizeof(frame->product))); |
237 | |
238 | return 0; |
239 | } |
240 | EXPORT_SYMBOL(hdmi_spd_infoframe_init); |
241 | |
242 | static int hdmi_spd_infoframe_check_only(const struct hdmi_spd_infoframe *frame) |
243 | { |
244 | if (frame->type != HDMI_INFOFRAME_TYPE_SPD || |
245 | frame->version != 1 || |
246 | frame->length != HDMI_SPD_INFOFRAME_SIZE) |
247 | return -EINVAL; |
248 | |
249 | return 0; |
250 | } |
251 | |
252 | /** |
253 | * hdmi_spd_infoframe_check() - check a HDMI SPD infoframe |
254 | * @frame: HDMI SPD infoframe |
255 | * |
256 | * Validates that the infoframe is consistent and updates derived fields |
257 | * (eg. length) based on other fields. |
258 | * |
259 | * Returns 0 on success or a negative error code on failure. |
260 | */ |
261 | int hdmi_spd_infoframe_check(struct hdmi_spd_infoframe *frame) |
262 | { |
263 | return hdmi_spd_infoframe_check_only(frame); |
264 | } |
265 | EXPORT_SYMBOL(hdmi_spd_infoframe_check); |
266 | |
267 | /** |
268 | * hdmi_spd_infoframe_pack_only() - write HDMI SPD infoframe to binary buffer |
269 | * @frame: HDMI SPD infoframe |
270 | * @buffer: destination buffer |
271 | * @size: size of buffer |
272 | * |
273 | * Packs the information contained in the @frame structure into a binary |
274 | * representation that can be written into the corresponding controller |
275 | * registers. Also computes the checksum as required by section 5.3.5 of |
276 | * the HDMI 1.4 specification. |
277 | * |
278 | * Returns the number of bytes packed into the binary buffer or a negative |
279 | * error code on failure. |
280 | */ |
281 | ssize_t hdmi_spd_infoframe_pack_only(const struct hdmi_spd_infoframe *frame, |
282 | void *buffer, size_t size) |
283 | { |
284 | u8 *ptr = buffer; |
285 | size_t length; |
286 | int ret; |
287 | |
288 | ret = hdmi_spd_infoframe_check_only(frame); |
289 | if (ret) |
290 | return ret; |
291 | |
292 | length = HDMI_INFOFRAME_HEADER_SIZE + frame->length; |
293 | |
294 | if (size < length) |
295 | return -ENOSPC; |
296 | |
297 | memset(buffer, 0, size); |
298 | |
299 | ptr[0] = frame->type; |
300 | ptr[1] = frame->version; |
301 | ptr[2] = frame->length; |
302 | ptr[3] = 0; /* checksum */ |
303 | |
304 | /* start infoframe payload */ |
305 | ptr += HDMI_INFOFRAME_HEADER_SIZE; |
306 | |
307 | memcpy(ptr, frame->vendor, sizeof(frame->vendor)); |
308 | memcpy(ptr + 8, frame->product, sizeof(frame->product)); |
309 | |
310 | ptr[24] = frame->sdi; |
311 | |
312 | hdmi_infoframe_set_checksum(buffer, size: length); |
313 | |
314 | return length; |
315 | } |
316 | EXPORT_SYMBOL(hdmi_spd_infoframe_pack_only); |
317 | |
318 | /** |
319 | * hdmi_spd_infoframe_pack() - check a HDMI SPD infoframe, |
320 | * and write it to binary buffer |
321 | * @frame: HDMI SPD infoframe |
322 | * @buffer: destination buffer |
323 | * @size: size of buffer |
324 | * |
325 | * Validates that the infoframe is consistent and updates derived fields |
326 | * (eg. length) based on other fields, after which it packs the information |
327 | * contained in the @frame structure into a binary representation that |
328 | * can be written into the corresponding controller registers. This function |
329 | * also computes the checksum as required by section 5.3.5 of the HDMI 1.4 |
330 | * specification. |
331 | * |
332 | * Returns the number of bytes packed into the binary buffer or a negative |
333 | * error code on failure. |
334 | */ |
335 | ssize_t hdmi_spd_infoframe_pack(struct hdmi_spd_infoframe *frame, |
336 | void *buffer, size_t size) |
337 | { |
338 | int ret; |
339 | |
340 | ret = hdmi_spd_infoframe_check(frame); |
341 | if (ret) |
342 | return ret; |
343 | |
344 | return hdmi_spd_infoframe_pack_only(frame, buffer, size); |
345 | } |
346 | EXPORT_SYMBOL(hdmi_spd_infoframe_pack); |
347 | |
348 | /** |
349 | * hdmi_audio_infoframe_init() - initialize an HDMI audio infoframe |
350 | * @frame: HDMI audio infoframe |
351 | * |
352 | * Returns 0 on success or a negative error code on failure. |
353 | */ |
354 | int hdmi_audio_infoframe_init(struct hdmi_audio_infoframe *frame) |
355 | { |
356 | memset(frame, 0, sizeof(*frame)); |
357 | |
358 | frame->type = HDMI_INFOFRAME_TYPE_AUDIO; |
359 | frame->version = 1; |
360 | frame->length = HDMI_AUDIO_INFOFRAME_SIZE; |
361 | |
362 | return 0; |
363 | } |
364 | EXPORT_SYMBOL(hdmi_audio_infoframe_init); |
365 | |
366 | static int hdmi_audio_infoframe_check_only(const struct hdmi_audio_infoframe *frame) |
367 | { |
368 | if (frame->type != HDMI_INFOFRAME_TYPE_AUDIO || |
369 | frame->version != 1 || |
370 | frame->length != HDMI_AUDIO_INFOFRAME_SIZE) |
371 | return -EINVAL; |
372 | |
373 | return 0; |
374 | } |
375 | |
376 | /** |
377 | * hdmi_audio_infoframe_check() - check a HDMI audio infoframe |
378 | * @frame: HDMI audio infoframe |
379 | * |
380 | * Validates that the infoframe is consistent and updates derived fields |
381 | * (eg. length) based on other fields. |
382 | * |
383 | * Returns 0 on success or a negative error code on failure. |
384 | */ |
385 | int hdmi_audio_infoframe_check(const struct hdmi_audio_infoframe *frame) |
386 | { |
387 | return hdmi_audio_infoframe_check_only(frame); |
388 | } |
389 | EXPORT_SYMBOL(hdmi_audio_infoframe_check); |
390 | |
391 | static void |
392 | hdmi_audio_infoframe_pack_payload(const struct hdmi_audio_infoframe *frame, |
393 | u8 *buffer) |
394 | { |
395 | u8 channels; |
396 | |
397 | if (frame->channels >= 2) |
398 | channels = frame->channels - 1; |
399 | else |
400 | channels = 0; |
401 | |
402 | buffer[0] = ((frame->coding_type & 0xf) << 4) | (channels & 0x7); |
403 | buffer[1] = ((frame->sample_frequency & 0x7) << 2) | |
404 | (frame->sample_size & 0x3); |
405 | buffer[2] = frame->coding_type_ext & 0x1f; |
406 | buffer[3] = frame->channel_allocation; |
407 | buffer[4] = (frame->level_shift_value & 0xf) << 3; |
408 | |
409 | if (frame->downmix_inhibit) |
410 | buffer[4] |= BIT(7); |
411 | } |
412 | |
413 | /** |
414 | * hdmi_audio_infoframe_pack_only() - write HDMI audio infoframe to binary buffer |
415 | * @frame: HDMI audio infoframe |
416 | * @buffer: destination buffer |
417 | * @size: size of buffer |
418 | * |
419 | * Packs the information contained in the @frame structure into a binary |
420 | * representation that can be written into the corresponding controller |
421 | * registers. Also computes the checksum as required by section 5.3.5 of |
422 | * the HDMI 1.4 specification. |
423 | * |
424 | * Returns the number of bytes packed into the binary buffer or a negative |
425 | * error code on failure. |
426 | */ |
427 | ssize_t hdmi_audio_infoframe_pack_only(const struct hdmi_audio_infoframe *frame, |
428 | void *buffer, size_t size) |
429 | { |
430 | u8 *ptr = buffer; |
431 | size_t length; |
432 | int ret; |
433 | |
434 | ret = hdmi_audio_infoframe_check_only(frame); |
435 | if (ret) |
436 | return ret; |
437 | |
438 | length = HDMI_INFOFRAME_HEADER_SIZE + frame->length; |
439 | |
440 | if (size < length) |
441 | return -ENOSPC; |
442 | |
443 | memset(buffer, 0, size); |
444 | |
445 | ptr[0] = frame->type; |
446 | ptr[1] = frame->version; |
447 | ptr[2] = frame->length; |
448 | ptr[3] = 0; /* checksum */ |
449 | |
450 | hdmi_audio_infoframe_pack_payload(frame, |
451 | buffer: ptr + HDMI_INFOFRAME_HEADER_SIZE); |
452 | |
453 | hdmi_infoframe_set_checksum(buffer, size: length); |
454 | |
455 | return length; |
456 | } |
457 | EXPORT_SYMBOL(hdmi_audio_infoframe_pack_only); |
458 | |
459 | /** |
460 | * hdmi_audio_infoframe_pack() - check a HDMI Audio infoframe, |
461 | * and write it to binary buffer |
462 | * @frame: HDMI Audio infoframe |
463 | * @buffer: destination buffer |
464 | * @size: size of buffer |
465 | * |
466 | * Validates that the infoframe is consistent and updates derived fields |
467 | * (eg. length) based on other fields, after which it packs the information |
468 | * contained in the @frame structure into a binary representation that |
469 | * can be written into the corresponding controller registers. This function |
470 | * also computes the checksum as required by section 5.3.5 of the HDMI 1.4 |
471 | * specification. |
472 | * |
473 | * Returns the number of bytes packed into the binary buffer or a negative |
474 | * error code on failure. |
475 | */ |
476 | ssize_t hdmi_audio_infoframe_pack(struct hdmi_audio_infoframe *frame, |
477 | void *buffer, size_t size) |
478 | { |
479 | int ret; |
480 | |
481 | ret = hdmi_audio_infoframe_check(frame); |
482 | if (ret) |
483 | return ret; |
484 | |
485 | return hdmi_audio_infoframe_pack_only(frame, buffer, size); |
486 | } |
487 | EXPORT_SYMBOL(hdmi_audio_infoframe_pack); |
488 | |
489 | /** |
490 | * hdmi_audio_infoframe_pack_for_dp - Pack a HDMI Audio infoframe for DisplayPort |
491 | * |
492 | * @frame: HDMI Audio infoframe |
493 | * @sdp: Secondary data packet for DisplayPort. |
494 | * @dp_version: DisplayPort version to be encoded in the header |
495 | * |
496 | * Packs a HDMI Audio Infoframe to be sent over DisplayPort. This function |
497 | * fills the secondary data packet to be used for DisplayPort. |
498 | * |
499 | * Return: Number of total written bytes or a negative errno on failure. |
500 | */ |
501 | ssize_t |
502 | hdmi_audio_infoframe_pack_for_dp(const struct hdmi_audio_infoframe *frame, |
503 | struct dp_sdp *sdp, u8 dp_version) |
504 | { |
505 | int ret; |
506 | |
507 | ret = hdmi_audio_infoframe_check(frame); |
508 | if (ret) |
509 | return ret; |
510 | |
511 | memset(sdp->db, 0, sizeof(sdp->db)); |
512 | |
513 | /* Secondary-data packet header */ |
514 | sdp->sdp_header.HB0 = 0; |
515 | sdp->sdp_header.HB1 = frame->type; |
516 | sdp->sdp_header.HB2 = DP_SDP_AUDIO_INFOFRAME_HB2; |
517 | sdp->sdp_header.HB3 = (dp_version & 0x3f) << 2; |
518 | |
519 | hdmi_audio_infoframe_pack_payload(frame, buffer: sdp->db); |
520 | |
521 | /* Return size = frame length + four HB for sdp_header */ |
522 | return frame->length + 4; |
523 | } |
524 | EXPORT_SYMBOL(hdmi_audio_infoframe_pack_for_dp); |
525 | |
526 | /** |
527 | * hdmi_vendor_infoframe_init() - initialize an HDMI vendor infoframe |
528 | * @frame: HDMI vendor infoframe |
529 | * |
530 | * Returns 0 on success or a negative error code on failure. |
531 | */ |
532 | int hdmi_vendor_infoframe_init(struct hdmi_vendor_infoframe *frame) |
533 | { |
534 | memset(frame, 0, sizeof(*frame)); |
535 | |
536 | frame->type = HDMI_INFOFRAME_TYPE_VENDOR; |
537 | frame->version = 1; |
538 | |
539 | frame->oui = HDMI_IEEE_OUI; |
540 | |
541 | /* |
542 | * 0 is a valid value for s3d_struct, so we use a special "not set" |
543 | * value |
544 | */ |
545 | frame->s3d_struct = HDMI_3D_STRUCTURE_INVALID; |
546 | frame->length = HDMI_VENDOR_INFOFRAME_SIZE; |
547 | |
548 | return 0; |
549 | } |
550 | EXPORT_SYMBOL(hdmi_vendor_infoframe_init); |
551 | |
552 | static int hdmi_vendor_infoframe_length(const struct hdmi_vendor_infoframe *frame) |
553 | { |
554 | /* for side by side (half) we also need to provide 3D_Ext_Data */ |
555 | if (frame->s3d_struct >= HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF) |
556 | return 6; |
557 | else if (frame->vic != 0 || frame->s3d_struct != HDMI_3D_STRUCTURE_INVALID) |
558 | return 5; |
559 | else |
560 | return 4; |
561 | } |
562 | |
563 | static int hdmi_vendor_infoframe_check_only(const struct hdmi_vendor_infoframe *frame) |
564 | { |
565 | if (frame->type != HDMI_INFOFRAME_TYPE_VENDOR || |
566 | frame->version != 1 || |
567 | frame->oui != HDMI_IEEE_OUI) |
568 | return -EINVAL; |
569 | |
570 | /* only one of those can be supplied */ |
571 | if (frame->vic != 0 && frame->s3d_struct != HDMI_3D_STRUCTURE_INVALID) |
572 | return -EINVAL; |
573 | |
574 | if (frame->length != hdmi_vendor_infoframe_length(frame)) |
575 | return -EINVAL; |
576 | |
577 | return 0; |
578 | } |
579 | |
580 | /** |
581 | * hdmi_vendor_infoframe_check() - check a HDMI vendor infoframe |
582 | * @frame: HDMI infoframe |
583 | * |
584 | * Validates that the infoframe is consistent and updates derived fields |
585 | * (eg. length) based on other fields. |
586 | * |
587 | * Returns 0 on success or a negative error code on failure. |
588 | */ |
589 | int hdmi_vendor_infoframe_check(struct hdmi_vendor_infoframe *frame) |
590 | { |
591 | frame->length = hdmi_vendor_infoframe_length(frame); |
592 | |
593 | return hdmi_vendor_infoframe_check_only(frame); |
594 | } |
595 | EXPORT_SYMBOL(hdmi_vendor_infoframe_check); |
596 | |
597 | /** |
598 | * hdmi_vendor_infoframe_pack_only() - write a HDMI vendor infoframe to binary buffer |
599 | * @frame: HDMI infoframe |
600 | * @buffer: destination buffer |
601 | * @size: size of buffer |
602 | * |
603 | * Packs the information contained in the @frame structure into a binary |
604 | * representation that can be written into the corresponding controller |
605 | * registers. Also computes the checksum as required by section 5.3.5 of |
606 | * the HDMI 1.4 specification. |
607 | * |
608 | * Returns the number of bytes packed into the binary buffer or a negative |
609 | * error code on failure. |
610 | */ |
611 | ssize_t hdmi_vendor_infoframe_pack_only(const struct hdmi_vendor_infoframe *frame, |
612 | void *buffer, size_t size) |
613 | { |
614 | u8 *ptr = buffer; |
615 | size_t length; |
616 | int ret; |
617 | |
618 | ret = hdmi_vendor_infoframe_check_only(frame); |
619 | if (ret) |
620 | return ret; |
621 | |
622 | length = HDMI_INFOFRAME_HEADER_SIZE + frame->length; |
623 | |
624 | if (size < length) |
625 | return -ENOSPC; |
626 | |
627 | memset(buffer, 0, size); |
628 | |
629 | ptr[0] = frame->type; |
630 | ptr[1] = frame->version; |
631 | ptr[2] = frame->length; |
632 | ptr[3] = 0; /* checksum */ |
633 | |
634 | /* HDMI OUI */ |
635 | ptr[4] = 0x03; |
636 | ptr[5] = 0x0c; |
637 | ptr[6] = 0x00; |
638 | |
639 | if (frame->s3d_struct != HDMI_3D_STRUCTURE_INVALID) { |
640 | ptr[7] = 0x2 << 5; /* video format */ |
641 | ptr[8] = (frame->s3d_struct & 0xf) << 4; |
642 | if (frame->s3d_struct >= HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF) |
643 | ptr[9] = (frame->s3d_ext_data & 0xf) << 4; |
644 | } else if (frame->vic) { |
645 | ptr[7] = 0x1 << 5; /* video format */ |
646 | ptr[8] = frame->vic; |
647 | } else { |
648 | ptr[7] = 0x0 << 5; /* video format */ |
649 | } |
650 | |
651 | hdmi_infoframe_set_checksum(buffer, size: length); |
652 | |
653 | return length; |
654 | } |
655 | EXPORT_SYMBOL(hdmi_vendor_infoframe_pack_only); |
656 | |
657 | /** |
658 | * hdmi_vendor_infoframe_pack() - check a HDMI Vendor infoframe, |
659 | * and write it to binary buffer |
660 | * @frame: HDMI Vendor infoframe |
661 | * @buffer: destination buffer |
662 | * @size: size of buffer |
663 | * |
664 | * Validates that the infoframe is consistent and updates derived fields |
665 | * (eg. length) based on other fields, after which it packs the information |
666 | * contained in the @frame structure into a binary representation that |
667 | * can be written into the corresponding controller registers. This function |
668 | * also computes the checksum as required by section 5.3.5 of the HDMI 1.4 |
669 | * specification. |
670 | * |
671 | * Returns the number of bytes packed into the binary buffer or a negative |
672 | * error code on failure. |
673 | */ |
674 | ssize_t hdmi_vendor_infoframe_pack(struct hdmi_vendor_infoframe *frame, |
675 | void *buffer, size_t size) |
676 | { |
677 | int ret; |
678 | |
679 | ret = hdmi_vendor_infoframe_check(frame); |
680 | if (ret) |
681 | return ret; |
682 | |
683 | return hdmi_vendor_infoframe_pack_only(frame, buffer, size); |
684 | } |
685 | EXPORT_SYMBOL(hdmi_vendor_infoframe_pack); |
686 | |
687 | static int |
688 | hdmi_vendor_any_infoframe_check_only(const union hdmi_vendor_any_infoframe *frame) |
689 | { |
690 | if (frame->any.type != HDMI_INFOFRAME_TYPE_VENDOR || |
691 | frame->any.version != 1) |
692 | return -EINVAL; |
693 | |
694 | return 0; |
695 | } |
696 | |
697 | /** |
698 | * hdmi_drm_infoframe_init() - initialize an HDMI Dynaminc Range and |
699 | * mastering infoframe |
700 | * @frame: HDMI DRM infoframe |
701 | * |
702 | * Returns 0 on success or a negative error code on failure. |
703 | */ |
704 | int hdmi_drm_infoframe_init(struct hdmi_drm_infoframe *frame) |
705 | { |
706 | memset(frame, 0, sizeof(*frame)); |
707 | |
708 | frame->type = HDMI_INFOFRAME_TYPE_DRM; |
709 | frame->version = 1; |
710 | frame->length = HDMI_DRM_INFOFRAME_SIZE; |
711 | |
712 | return 0; |
713 | } |
714 | EXPORT_SYMBOL(hdmi_drm_infoframe_init); |
715 | |
716 | static int hdmi_drm_infoframe_check_only(const struct hdmi_drm_infoframe *frame) |
717 | { |
718 | if (frame->type != HDMI_INFOFRAME_TYPE_DRM || |
719 | frame->version != 1) |
720 | return -EINVAL; |
721 | |
722 | if (frame->length != HDMI_DRM_INFOFRAME_SIZE) |
723 | return -EINVAL; |
724 | |
725 | return 0; |
726 | } |
727 | |
728 | /** |
729 | * hdmi_drm_infoframe_check() - check a HDMI DRM infoframe |
730 | * @frame: HDMI DRM infoframe |
731 | * |
732 | * Validates that the infoframe is consistent. |
733 | * Returns 0 on success or a negative error code on failure. |
734 | */ |
735 | int hdmi_drm_infoframe_check(struct hdmi_drm_infoframe *frame) |
736 | { |
737 | return hdmi_drm_infoframe_check_only(frame); |
738 | } |
739 | EXPORT_SYMBOL(hdmi_drm_infoframe_check); |
740 | |
741 | /** |
742 | * hdmi_drm_infoframe_pack_only() - write HDMI DRM infoframe to binary buffer |
743 | * @frame: HDMI DRM infoframe |
744 | * @buffer: destination buffer |
745 | * @size: size of buffer |
746 | * |
747 | * Packs the information contained in the @frame structure into a binary |
748 | * representation that can be written into the corresponding controller |
749 | * registers. Also computes the checksum as required by section 5.3.5 of |
750 | * the HDMI 1.4 specification. |
751 | * |
752 | * Returns the number of bytes packed into the binary buffer or a negative |
753 | * error code on failure. |
754 | */ |
755 | ssize_t hdmi_drm_infoframe_pack_only(const struct hdmi_drm_infoframe *frame, |
756 | void *buffer, size_t size) |
757 | { |
758 | u8 *ptr = buffer; |
759 | size_t length; |
760 | int i; |
761 | |
762 | length = HDMI_INFOFRAME_HEADER_SIZE + frame->length; |
763 | |
764 | if (size < length) |
765 | return -ENOSPC; |
766 | |
767 | memset(buffer, 0, size); |
768 | |
769 | ptr[0] = frame->type; |
770 | ptr[1] = frame->version; |
771 | ptr[2] = frame->length; |
772 | ptr[3] = 0; /* checksum */ |
773 | |
774 | /* start infoframe payload */ |
775 | ptr += HDMI_INFOFRAME_HEADER_SIZE; |
776 | |
777 | *ptr++ = frame->eotf; |
778 | *ptr++ = frame->metadata_type; |
779 | |
780 | for (i = 0; i < 3; i++) { |
781 | *ptr++ = frame->display_primaries[i].x; |
782 | *ptr++ = frame->display_primaries[i].x >> 8; |
783 | *ptr++ = frame->display_primaries[i].y; |
784 | *ptr++ = frame->display_primaries[i].y >> 8; |
785 | } |
786 | |
787 | *ptr++ = frame->white_point.x; |
788 | *ptr++ = frame->white_point.x >> 8; |
789 | |
790 | *ptr++ = frame->white_point.y; |
791 | *ptr++ = frame->white_point.y >> 8; |
792 | |
793 | *ptr++ = frame->max_display_mastering_luminance; |
794 | *ptr++ = frame->max_display_mastering_luminance >> 8; |
795 | |
796 | *ptr++ = frame->min_display_mastering_luminance; |
797 | *ptr++ = frame->min_display_mastering_luminance >> 8; |
798 | |
799 | *ptr++ = frame->max_cll; |
800 | *ptr++ = frame->max_cll >> 8; |
801 | |
802 | *ptr++ = frame->max_fall; |
803 | *ptr++ = frame->max_fall >> 8; |
804 | |
805 | hdmi_infoframe_set_checksum(buffer, size: length); |
806 | |
807 | return length; |
808 | } |
809 | EXPORT_SYMBOL(hdmi_drm_infoframe_pack_only); |
810 | |
811 | /** |
812 | * hdmi_drm_infoframe_pack() - check a HDMI DRM infoframe, |
813 | * and write it to binary buffer |
814 | * @frame: HDMI DRM infoframe |
815 | * @buffer: destination buffer |
816 | * @size: size of buffer |
817 | * |
818 | * Validates that the infoframe is consistent and updates derived fields |
819 | * (eg. length) based on other fields, after which it packs the information |
820 | * contained in the @frame structure into a binary representation that |
821 | * can be written into the corresponding controller registers. This function |
822 | * also computes the checksum as required by section 5.3.5 of the HDMI 1.4 |
823 | * specification. |
824 | * |
825 | * Returns the number of bytes packed into the binary buffer or a negative |
826 | * error code on failure. |
827 | */ |
828 | ssize_t hdmi_drm_infoframe_pack(struct hdmi_drm_infoframe *frame, |
829 | void *buffer, size_t size) |
830 | { |
831 | int ret; |
832 | |
833 | ret = hdmi_drm_infoframe_check(frame); |
834 | if (ret) |
835 | return ret; |
836 | |
837 | return hdmi_drm_infoframe_pack_only(frame, buffer, size); |
838 | } |
839 | EXPORT_SYMBOL(hdmi_drm_infoframe_pack); |
840 | |
841 | /* |
842 | * hdmi_vendor_any_infoframe_check() - check a vendor infoframe |
843 | */ |
844 | static int |
845 | hdmi_vendor_any_infoframe_check(union hdmi_vendor_any_infoframe *frame) |
846 | { |
847 | int ret; |
848 | |
849 | ret = hdmi_vendor_any_infoframe_check_only(frame); |
850 | if (ret) |
851 | return ret; |
852 | |
853 | /* we only know about HDMI vendor infoframes */ |
854 | if (frame->any.oui != HDMI_IEEE_OUI) |
855 | return -EINVAL; |
856 | |
857 | return hdmi_vendor_infoframe_check(&frame->hdmi); |
858 | } |
859 | |
860 | /* |
861 | * hdmi_vendor_any_infoframe_pack_only() - write a vendor infoframe to binary buffer |
862 | */ |
863 | static ssize_t |
864 | hdmi_vendor_any_infoframe_pack_only(const union hdmi_vendor_any_infoframe *frame, |
865 | void *buffer, size_t size) |
866 | { |
867 | int ret; |
868 | |
869 | ret = hdmi_vendor_any_infoframe_check_only(frame); |
870 | if (ret) |
871 | return ret; |
872 | |
873 | /* we only know about HDMI vendor infoframes */ |
874 | if (frame->any.oui != HDMI_IEEE_OUI) |
875 | return -EINVAL; |
876 | |
877 | return hdmi_vendor_infoframe_pack_only(&frame->hdmi, buffer, size); |
878 | } |
879 | |
880 | /* |
881 | * hdmi_vendor_any_infoframe_pack() - check a vendor infoframe, |
882 | * and write it to binary buffer |
883 | */ |
884 | static ssize_t |
885 | hdmi_vendor_any_infoframe_pack(union hdmi_vendor_any_infoframe *frame, |
886 | void *buffer, size_t size) |
887 | { |
888 | int ret; |
889 | |
890 | ret = hdmi_vendor_any_infoframe_check(frame); |
891 | if (ret) |
892 | return ret; |
893 | |
894 | return hdmi_vendor_any_infoframe_pack_only(frame, buffer, size); |
895 | } |
896 | |
897 | /** |
898 | * hdmi_infoframe_check() - check a HDMI infoframe |
899 | * @frame: HDMI infoframe |
900 | * |
901 | * Validates that the infoframe is consistent and updates derived fields |
902 | * (eg. length) based on other fields. |
903 | * |
904 | * Returns 0 on success or a negative error code on failure. |
905 | */ |
906 | int |
907 | hdmi_infoframe_check(union hdmi_infoframe *frame) |
908 | { |
909 | switch (frame->any.type) { |
910 | case HDMI_INFOFRAME_TYPE_AVI: |
911 | return hdmi_avi_infoframe_check(&frame->avi); |
912 | case HDMI_INFOFRAME_TYPE_SPD: |
913 | return hdmi_spd_infoframe_check(&frame->spd); |
914 | case HDMI_INFOFRAME_TYPE_AUDIO: |
915 | return hdmi_audio_infoframe_check(&frame->audio); |
916 | case HDMI_INFOFRAME_TYPE_VENDOR: |
917 | return hdmi_vendor_any_infoframe_check(frame: &frame->vendor); |
918 | default: |
919 | WARN(1, "Bad infoframe type %d\n" , frame->any.type); |
920 | return -EINVAL; |
921 | } |
922 | } |
923 | EXPORT_SYMBOL(hdmi_infoframe_check); |
924 | |
925 | /** |
926 | * hdmi_infoframe_pack_only() - write a HDMI infoframe to binary buffer |
927 | * @frame: HDMI infoframe |
928 | * @buffer: destination buffer |
929 | * @size: size of buffer |
930 | * |
931 | * Packs the information contained in the @frame structure into a binary |
932 | * representation that can be written into the corresponding controller |
933 | * registers. Also computes the checksum as required by section 5.3.5 of |
934 | * the HDMI 1.4 specification. |
935 | * |
936 | * Returns the number of bytes packed into the binary buffer or a negative |
937 | * error code on failure. |
938 | */ |
939 | ssize_t |
940 | hdmi_infoframe_pack_only(const union hdmi_infoframe *frame, void *buffer, size_t size) |
941 | { |
942 | ssize_t length; |
943 | |
944 | switch (frame->any.type) { |
945 | case HDMI_INFOFRAME_TYPE_AVI: |
946 | length = hdmi_avi_infoframe_pack_only(&frame->avi, |
947 | buffer, size); |
948 | break; |
949 | case HDMI_INFOFRAME_TYPE_DRM: |
950 | length = hdmi_drm_infoframe_pack_only(&frame->drm, |
951 | buffer, size); |
952 | break; |
953 | case HDMI_INFOFRAME_TYPE_SPD: |
954 | length = hdmi_spd_infoframe_pack_only(&frame->spd, |
955 | buffer, size); |
956 | break; |
957 | case HDMI_INFOFRAME_TYPE_AUDIO: |
958 | length = hdmi_audio_infoframe_pack_only(&frame->audio, |
959 | buffer, size); |
960 | break; |
961 | case HDMI_INFOFRAME_TYPE_VENDOR: |
962 | length = hdmi_vendor_any_infoframe_pack_only(frame: &frame->vendor, |
963 | buffer, size); |
964 | break; |
965 | default: |
966 | WARN(1, "Bad infoframe type %d\n" , frame->any.type); |
967 | length = -EINVAL; |
968 | } |
969 | |
970 | return length; |
971 | } |
972 | EXPORT_SYMBOL(hdmi_infoframe_pack_only); |
973 | |
974 | /** |
975 | * hdmi_infoframe_pack() - check a HDMI infoframe, |
976 | * and write it to binary buffer |
977 | * @frame: HDMI infoframe |
978 | * @buffer: destination buffer |
979 | * @size: size of buffer |
980 | * |
981 | * Validates that the infoframe is consistent and updates derived fields |
982 | * (eg. length) based on other fields, after which it packs the information |
983 | * contained in the @frame structure into a binary representation that |
984 | * can be written into the corresponding controller registers. This function |
985 | * also computes the checksum as required by section 5.3.5 of the HDMI 1.4 |
986 | * specification. |
987 | * |
988 | * Returns the number of bytes packed into the binary buffer or a negative |
989 | * error code on failure. |
990 | */ |
991 | ssize_t |
992 | hdmi_infoframe_pack(union hdmi_infoframe *frame, |
993 | void *buffer, size_t size) |
994 | { |
995 | ssize_t length; |
996 | |
997 | switch (frame->any.type) { |
998 | case HDMI_INFOFRAME_TYPE_AVI: |
999 | length = hdmi_avi_infoframe_pack(&frame->avi, buffer, size); |
1000 | break; |
1001 | case HDMI_INFOFRAME_TYPE_DRM: |
1002 | length = hdmi_drm_infoframe_pack(&frame->drm, buffer, size); |
1003 | break; |
1004 | case HDMI_INFOFRAME_TYPE_SPD: |
1005 | length = hdmi_spd_infoframe_pack(&frame->spd, buffer, size); |
1006 | break; |
1007 | case HDMI_INFOFRAME_TYPE_AUDIO: |
1008 | length = hdmi_audio_infoframe_pack(&frame->audio, buffer, size); |
1009 | break; |
1010 | case HDMI_INFOFRAME_TYPE_VENDOR: |
1011 | length = hdmi_vendor_any_infoframe_pack(frame: &frame->vendor, |
1012 | buffer, size); |
1013 | break; |
1014 | default: |
1015 | WARN(1, "Bad infoframe type %d\n" , frame->any.type); |
1016 | length = -EINVAL; |
1017 | } |
1018 | |
1019 | return length; |
1020 | } |
1021 | EXPORT_SYMBOL(hdmi_infoframe_pack); |
1022 | |
1023 | static const char *hdmi_infoframe_type_get_name(enum hdmi_infoframe_type type) |
1024 | { |
1025 | if (type < 0x80 || type > 0x9f) |
1026 | return "Invalid" ; |
1027 | switch (type) { |
1028 | case HDMI_INFOFRAME_TYPE_VENDOR: |
1029 | return "Vendor" ; |
1030 | case HDMI_INFOFRAME_TYPE_AVI: |
1031 | return "Auxiliary Video Information (AVI)" ; |
1032 | case HDMI_INFOFRAME_TYPE_SPD: |
1033 | return "Source Product Description (SPD)" ; |
1034 | case HDMI_INFOFRAME_TYPE_AUDIO: |
1035 | return "Audio" ; |
1036 | case HDMI_INFOFRAME_TYPE_DRM: |
1037 | return "Dynamic Range and Mastering" ; |
1038 | } |
1039 | return "Reserved" ; |
1040 | } |
1041 | |
1042 | static void (const char *level, |
1043 | struct device *dev, |
1044 | const struct hdmi_any_infoframe *frame) |
1045 | { |
1046 | hdmi_log("HDMI infoframe: %s, version %u, length %u\n" , |
1047 | hdmi_infoframe_type_get_name(frame->type), |
1048 | frame->version, frame->length); |
1049 | } |
1050 | |
1051 | static const char *hdmi_colorspace_get_name(enum hdmi_colorspace colorspace) |
1052 | { |
1053 | switch (colorspace) { |
1054 | case HDMI_COLORSPACE_RGB: |
1055 | return "RGB" ; |
1056 | case HDMI_COLORSPACE_YUV422: |
1057 | return "YCbCr 4:2:2" ; |
1058 | case HDMI_COLORSPACE_YUV444: |
1059 | return "YCbCr 4:4:4" ; |
1060 | case HDMI_COLORSPACE_YUV420: |
1061 | return "YCbCr 4:2:0" ; |
1062 | case HDMI_COLORSPACE_RESERVED4: |
1063 | return "Reserved (4)" ; |
1064 | case HDMI_COLORSPACE_RESERVED5: |
1065 | return "Reserved (5)" ; |
1066 | case HDMI_COLORSPACE_RESERVED6: |
1067 | return "Reserved (6)" ; |
1068 | case HDMI_COLORSPACE_IDO_DEFINED: |
1069 | return "IDO Defined" ; |
1070 | } |
1071 | return "Invalid" ; |
1072 | } |
1073 | |
1074 | static const char *hdmi_scan_mode_get_name(enum hdmi_scan_mode scan_mode) |
1075 | { |
1076 | switch (scan_mode) { |
1077 | case HDMI_SCAN_MODE_NONE: |
1078 | return "No Data" ; |
1079 | case HDMI_SCAN_MODE_OVERSCAN: |
1080 | return "Overscan" ; |
1081 | case HDMI_SCAN_MODE_UNDERSCAN: |
1082 | return "Underscan" ; |
1083 | case HDMI_SCAN_MODE_RESERVED: |
1084 | return "Reserved" ; |
1085 | } |
1086 | return "Invalid" ; |
1087 | } |
1088 | |
1089 | static const char *hdmi_colorimetry_get_name(enum hdmi_colorimetry colorimetry) |
1090 | { |
1091 | switch (colorimetry) { |
1092 | case HDMI_COLORIMETRY_NONE: |
1093 | return "No Data" ; |
1094 | case HDMI_COLORIMETRY_ITU_601: |
1095 | return "ITU601" ; |
1096 | case HDMI_COLORIMETRY_ITU_709: |
1097 | return "ITU709" ; |
1098 | case HDMI_COLORIMETRY_EXTENDED: |
1099 | return "Extended" ; |
1100 | } |
1101 | return "Invalid" ; |
1102 | } |
1103 | |
1104 | static const char * |
1105 | hdmi_picture_aspect_get_name(enum hdmi_picture_aspect picture_aspect) |
1106 | { |
1107 | switch (picture_aspect) { |
1108 | case HDMI_PICTURE_ASPECT_NONE: |
1109 | return "No Data" ; |
1110 | case HDMI_PICTURE_ASPECT_4_3: |
1111 | return "4:3" ; |
1112 | case HDMI_PICTURE_ASPECT_16_9: |
1113 | return "16:9" ; |
1114 | case HDMI_PICTURE_ASPECT_64_27: |
1115 | return "64:27" ; |
1116 | case HDMI_PICTURE_ASPECT_256_135: |
1117 | return "256:135" ; |
1118 | case HDMI_PICTURE_ASPECT_RESERVED: |
1119 | return "Reserved" ; |
1120 | } |
1121 | return "Invalid" ; |
1122 | } |
1123 | |
1124 | static const char * |
1125 | hdmi_active_aspect_get_name(enum hdmi_active_aspect active_aspect) |
1126 | { |
1127 | if (active_aspect < 0 || active_aspect > 0xf) |
1128 | return "Invalid" ; |
1129 | |
1130 | switch (active_aspect) { |
1131 | case HDMI_ACTIVE_ASPECT_16_9_TOP: |
1132 | return "16:9 Top" ; |
1133 | case HDMI_ACTIVE_ASPECT_14_9_TOP: |
1134 | return "14:9 Top" ; |
1135 | case HDMI_ACTIVE_ASPECT_16_9_CENTER: |
1136 | return "16:9 Center" ; |
1137 | case HDMI_ACTIVE_ASPECT_PICTURE: |
1138 | return "Same as Picture" ; |
1139 | case HDMI_ACTIVE_ASPECT_4_3: |
1140 | return "4:3" ; |
1141 | case HDMI_ACTIVE_ASPECT_16_9: |
1142 | return "16:9" ; |
1143 | case HDMI_ACTIVE_ASPECT_14_9: |
1144 | return "14:9" ; |
1145 | case HDMI_ACTIVE_ASPECT_4_3_SP_14_9: |
1146 | return "4:3 SP 14:9" ; |
1147 | case HDMI_ACTIVE_ASPECT_16_9_SP_14_9: |
1148 | return "16:9 SP 14:9" ; |
1149 | case HDMI_ACTIVE_ASPECT_16_9_SP_4_3: |
1150 | return "16:9 SP 4:3" ; |
1151 | } |
1152 | return "Reserved" ; |
1153 | } |
1154 | |
1155 | static const char * |
1156 | hdmi_extended_colorimetry_get_name(enum hdmi_extended_colorimetry ext_col) |
1157 | { |
1158 | switch (ext_col) { |
1159 | case HDMI_EXTENDED_COLORIMETRY_XV_YCC_601: |
1160 | return "xvYCC 601" ; |
1161 | case HDMI_EXTENDED_COLORIMETRY_XV_YCC_709: |
1162 | return "xvYCC 709" ; |
1163 | case HDMI_EXTENDED_COLORIMETRY_S_YCC_601: |
1164 | return "sYCC 601" ; |
1165 | case HDMI_EXTENDED_COLORIMETRY_OPYCC_601: |
1166 | return "opYCC 601" ; |
1167 | case HDMI_EXTENDED_COLORIMETRY_OPRGB: |
1168 | return "opRGB" ; |
1169 | case HDMI_EXTENDED_COLORIMETRY_BT2020_CONST_LUM: |
1170 | return "BT.2020 Constant Luminance" ; |
1171 | case HDMI_EXTENDED_COLORIMETRY_BT2020: |
1172 | return "BT.2020" ; |
1173 | case HDMI_EXTENDED_COLORIMETRY_RESERVED: |
1174 | return "Reserved" ; |
1175 | } |
1176 | return "Invalid" ; |
1177 | } |
1178 | |
1179 | static const char * |
1180 | hdmi_quantization_range_get_name(enum hdmi_quantization_range qrange) |
1181 | { |
1182 | switch (qrange) { |
1183 | case HDMI_QUANTIZATION_RANGE_DEFAULT: |
1184 | return "Default" ; |
1185 | case HDMI_QUANTIZATION_RANGE_LIMITED: |
1186 | return "Limited" ; |
1187 | case HDMI_QUANTIZATION_RANGE_FULL: |
1188 | return "Full" ; |
1189 | case HDMI_QUANTIZATION_RANGE_RESERVED: |
1190 | return "Reserved" ; |
1191 | } |
1192 | return "Invalid" ; |
1193 | } |
1194 | |
1195 | static const char *hdmi_nups_get_name(enum hdmi_nups nups) |
1196 | { |
1197 | switch (nups) { |
1198 | case HDMI_NUPS_UNKNOWN: |
1199 | return "Unknown Non-uniform Scaling" ; |
1200 | case HDMI_NUPS_HORIZONTAL: |
1201 | return "Horizontally Scaled" ; |
1202 | case HDMI_NUPS_VERTICAL: |
1203 | return "Vertically Scaled" ; |
1204 | case HDMI_NUPS_BOTH: |
1205 | return "Horizontally and Vertically Scaled" ; |
1206 | } |
1207 | return "Invalid" ; |
1208 | } |
1209 | |
1210 | static const char * |
1211 | hdmi_ycc_quantization_range_get_name(enum hdmi_ycc_quantization_range qrange) |
1212 | { |
1213 | switch (qrange) { |
1214 | case HDMI_YCC_QUANTIZATION_RANGE_LIMITED: |
1215 | return "Limited" ; |
1216 | case HDMI_YCC_QUANTIZATION_RANGE_FULL: |
1217 | return "Full" ; |
1218 | } |
1219 | return "Invalid" ; |
1220 | } |
1221 | |
1222 | static const char * |
1223 | hdmi_content_type_get_name(enum hdmi_content_type content_type) |
1224 | { |
1225 | switch (content_type) { |
1226 | case HDMI_CONTENT_TYPE_GRAPHICS: |
1227 | return "Graphics" ; |
1228 | case HDMI_CONTENT_TYPE_PHOTO: |
1229 | return "Photo" ; |
1230 | case HDMI_CONTENT_TYPE_CINEMA: |
1231 | return "Cinema" ; |
1232 | case HDMI_CONTENT_TYPE_GAME: |
1233 | return "Game" ; |
1234 | } |
1235 | return "Invalid" ; |
1236 | } |
1237 | |
1238 | static void hdmi_avi_infoframe_log(const char *level, |
1239 | struct device *dev, |
1240 | const struct hdmi_avi_infoframe *frame) |
1241 | { |
1242 | hdmi_infoframe_log_header(level, dev, |
1243 | frame: (const struct hdmi_any_infoframe *)frame); |
1244 | |
1245 | hdmi_log(" colorspace: %s\n" , |
1246 | hdmi_colorspace_get_name(frame->colorspace)); |
1247 | hdmi_log(" scan mode: %s\n" , |
1248 | hdmi_scan_mode_get_name(frame->scan_mode)); |
1249 | hdmi_log(" colorimetry: %s\n" , |
1250 | hdmi_colorimetry_get_name(frame->colorimetry)); |
1251 | hdmi_log(" picture aspect: %s\n" , |
1252 | hdmi_picture_aspect_get_name(frame->picture_aspect)); |
1253 | hdmi_log(" active aspect: %s\n" , |
1254 | hdmi_active_aspect_get_name(frame->active_aspect)); |
1255 | hdmi_log(" itc: %s\n" , frame->itc ? "IT Content" : "No Data" ); |
1256 | hdmi_log(" extended colorimetry: %s\n" , |
1257 | hdmi_extended_colorimetry_get_name(frame->extended_colorimetry)); |
1258 | hdmi_log(" quantization range: %s\n" , |
1259 | hdmi_quantization_range_get_name(frame->quantization_range)); |
1260 | hdmi_log(" nups: %s\n" , hdmi_nups_get_name(frame->nups)); |
1261 | hdmi_log(" video code: %u\n" , frame->video_code); |
1262 | hdmi_log(" ycc quantization range: %s\n" , |
1263 | hdmi_ycc_quantization_range_get_name(frame->ycc_quantization_range)); |
1264 | hdmi_log(" hdmi content type: %s\n" , |
1265 | hdmi_content_type_get_name(frame->content_type)); |
1266 | hdmi_log(" pixel repeat: %u\n" , frame->pixel_repeat); |
1267 | hdmi_log(" bar top %u, bottom %u, left %u, right %u\n" , |
1268 | frame->top_bar, frame->bottom_bar, |
1269 | frame->left_bar, frame->right_bar); |
1270 | } |
1271 | |
1272 | static const char *hdmi_spd_sdi_get_name(enum hdmi_spd_sdi sdi) |
1273 | { |
1274 | if (sdi < 0 || sdi > 0xff) |
1275 | return "Invalid" ; |
1276 | switch (sdi) { |
1277 | case HDMI_SPD_SDI_UNKNOWN: |
1278 | return "Unknown" ; |
1279 | case HDMI_SPD_SDI_DSTB: |
1280 | return "Digital STB" ; |
1281 | case HDMI_SPD_SDI_DVDP: |
1282 | return "DVD Player" ; |
1283 | case HDMI_SPD_SDI_DVHS: |
1284 | return "D-VHS" ; |
1285 | case HDMI_SPD_SDI_HDDVR: |
1286 | return "HDD Videorecorder" ; |
1287 | case HDMI_SPD_SDI_DVC: |
1288 | return "DVC" ; |
1289 | case HDMI_SPD_SDI_DSC: |
1290 | return "DSC" ; |
1291 | case HDMI_SPD_SDI_VCD: |
1292 | return "Video CD" ; |
1293 | case HDMI_SPD_SDI_GAME: |
1294 | return "Game" ; |
1295 | case HDMI_SPD_SDI_PC: |
1296 | return "PC General" ; |
1297 | case HDMI_SPD_SDI_BD: |
1298 | return "Blu-Ray Disc (BD)" ; |
1299 | case HDMI_SPD_SDI_SACD: |
1300 | return "Super Audio CD" ; |
1301 | case HDMI_SPD_SDI_HDDVD: |
1302 | return "HD DVD" ; |
1303 | case HDMI_SPD_SDI_PMP: |
1304 | return "PMP" ; |
1305 | } |
1306 | return "Reserved" ; |
1307 | } |
1308 | |
1309 | static void hdmi_spd_infoframe_log(const char *level, |
1310 | struct device *dev, |
1311 | const struct hdmi_spd_infoframe *frame) |
1312 | { |
1313 | u8 buf[17]; |
1314 | |
1315 | hdmi_infoframe_log_header(level, dev, |
1316 | frame: (const struct hdmi_any_infoframe *)frame); |
1317 | |
1318 | memset(buf, 0, sizeof(buf)); |
1319 | |
1320 | strncpy(p: buf, q: frame->vendor, size: 8); |
1321 | hdmi_log(" vendor: %s\n" , buf); |
1322 | strncpy(p: buf, q: frame->product, size: 16); |
1323 | hdmi_log(" product: %s\n" , buf); |
1324 | hdmi_log(" source device information: %s (0x%x)\n" , |
1325 | hdmi_spd_sdi_get_name(frame->sdi), frame->sdi); |
1326 | } |
1327 | |
1328 | static const char * |
1329 | hdmi_audio_coding_type_get_name(enum hdmi_audio_coding_type coding_type) |
1330 | { |
1331 | switch (coding_type) { |
1332 | case HDMI_AUDIO_CODING_TYPE_STREAM: |
1333 | return "Refer to Stream Header" ; |
1334 | case HDMI_AUDIO_CODING_TYPE_PCM: |
1335 | return "PCM" ; |
1336 | case HDMI_AUDIO_CODING_TYPE_AC3: |
1337 | return "AC-3" ; |
1338 | case HDMI_AUDIO_CODING_TYPE_MPEG1: |
1339 | return "MPEG1" ; |
1340 | case HDMI_AUDIO_CODING_TYPE_MP3: |
1341 | return "MP3" ; |
1342 | case HDMI_AUDIO_CODING_TYPE_MPEG2: |
1343 | return "MPEG2" ; |
1344 | case HDMI_AUDIO_CODING_TYPE_AAC_LC: |
1345 | return "AAC" ; |
1346 | case HDMI_AUDIO_CODING_TYPE_DTS: |
1347 | return "DTS" ; |
1348 | case HDMI_AUDIO_CODING_TYPE_ATRAC: |
1349 | return "ATRAC" ; |
1350 | case HDMI_AUDIO_CODING_TYPE_DSD: |
1351 | return "One Bit Audio" ; |
1352 | case HDMI_AUDIO_CODING_TYPE_EAC3: |
1353 | return "Dolby Digital +" ; |
1354 | case HDMI_AUDIO_CODING_TYPE_DTS_HD: |
1355 | return "DTS-HD" ; |
1356 | case HDMI_AUDIO_CODING_TYPE_MLP: |
1357 | return "MAT (MLP)" ; |
1358 | case HDMI_AUDIO_CODING_TYPE_DST: |
1359 | return "DST" ; |
1360 | case HDMI_AUDIO_CODING_TYPE_WMA_PRO: |
1361 | return "WMA PRO" ; |
1362 | case HDMI_AUDIO_CODING_TYPE_CXT: |
1363 | return "Refer to CXT" ; |
1364 | } |
1365 | return "Invalid" ; |
1366 | } |
1367 | |
1368 | static const char * |
1369 | hdmi_audio_sample_size_get_name(enum hdmi_audio_sample_size sample_size) |
1370 | { |
1371 | switch (sample_size) { |
1372 | case HDMI_AUDIO_SAMPLE_SIZE_STREAM: |
1373 | return "Refer to Stream Header" ; |
1374 | case HDMI_AUDIO_SAMPLE_SIZE_16: |
1375 | return "16 bit" ; |
1376 | case HDMI_AUDIO_SAMPLE_SIZE_20: |
1377 | return "20 bit" ; |
1378 | case HDMI_AUDIO_SAMPLE_SIZE_24: |
1379 | return "24 bit" ; |
1380 | } |
1381 | return "Invalid" ; |
1382 | } |
1383 | |
1384 | static const char * |
1385 | hdmi_audio_sample_frequency_get_name(enum hdmi_audio_sample_frequency freq) |
1386 | { |
1387 | switch (freq) { |
1388 | case HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM: |
1389 | return "Refer to Stream Header" ; |
1390 | case HDMI_AUDIO_SAMPLE_FREQUENCY_32000: |
1391 | return "32 kHz" ; |
1392 | case HDMI_AUDIO_SAMPLE_FREQUENCY_44100: |
1393 | return "44.1 kHz (CD)" ; |
1394 | case HDMI_AUDIO_SAMPLE_FREQUENCY_48000: |
1395 | return "48 kHz" ; |
1396 | case HDMI_AUDIO_SAMPLE_FREQUENCY_88200: |
1397 | return "88.2 kHz" ; |
1398 | case HDMI_AUDIO_SAMPLE_FREQUENCY_96000: |
1399 | return "96 kHz" ; |
1400 | case HDMI_AUDIO_SAMPLE_FREQUENCY_176400: |
1401 | return "176.4 kHz" ; |
1402 | case HDMI_AUDIO_SAMPLE_FREQUENCY_192000: |
1403 | return "192 kHz" ; |
1404 | } |
1405 | return "Invalid" ; |
1406 | } |
1407 | |
1408 | static const char * |
1409 | hdmi_audio_coding_type_ext_get_name(enum hdmi_audio_coding_type_ext ctx) |
1410 | { |
1411 | if (ctx < 0 || ctx > 0x1f) |
1412 | return "Invalid" ; |
1413 | |
1414 | switch (ctx) { |
1415 | case HDMI_AUDIO_CODING_TYPE_EXT_CT: |
1416 | return "Refer to CT" ; |
1417 | case HDMI_AUDIO_CODING_TYPE_EXT_HE_AAC: |
1418 | return "HE AAC" ; |
1419 | case HDMI_AUDIO_CODING_TYPE_EXT_HE_AAC_V2: |
1420 | return "HE AAC v2" ; |
1421 | case HDMI_AUDIO_CODING_TYPE_EXT_MPEG_SURROUND: |
1422 | return "MPEG SURROUND" ; |
1423 | case HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_HE_AAC: |
1424 | return "MPEG-4 HE AAC" ; |
1425 | case HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_HE_AAC_V2: |
1426 | return "MPEG-4 HE AAC v2" ; |
1427 | case HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_AAC_LC: |
1428 | return "MPEG-4 AAC LC" ; |
1429 | case HDMI_AUDIO_CODING_TYPE_EXT_DRA: |
1430 | return "DRA" ; |
1431 | case HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_HE_AAC_SURROUND: |
1432 | return "MPEG-4 HE AAC + MPEG Surround" ; |
1433 | case HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_AAC_LC_SURROUND: |
1434 | return "MPEG-4 AAC LC + MPEG Surround" ; |
1435 | } |
1436 | return "Reserved" ; |
1437 | } |
1438 | |
1439 | static void hdmi_audio_infoframe_log(const char *level, |
1440 | struct device *dev, |
1441 | const struct hdmi_audio_infoframe *frame) |
1442 | { |
1443 | hdmi_infoframe_log_header(level, dev, |
1444 | frame: (const struct hdmi_any_infoframe *)frame); |
1445 | |
1446 | if (frame->channels) |
1447 | hdmi_log(" channels: %u\n" , frame->channels - 1); |
1448 | else |
1449 | hdmi_log(" channels: Refer to stream header\n" ); |
1450 | hdmi_log(" coding type: %s\n" , |
1451 | hdmi_audio_coding_type_get_name(frame->coding_type)); |
1452 | hdmi_log(" sample size: %s\n" , |
1453 | hdmi_audio_sample_size_get_name(frame->sample_size)); |
1454 | hdmi_log(" sample frequency: %s\n" , |
1455 | hdmi_audio_sample_frequency_get_name(frame->sample_frequency)); |
1456 | hdmi_log(" coding type ext: %s\n" , |
1457 | hdmi_audio_coding_type_ext_get_name(frame->coding_type_ext)); |
1458 | hdmi_log(" channel allocation: 0x%x\n" , |
1459 | frame->channel_allocation); |
1460 | hdmi_log(" level shift value: %u dB\n" , |
1461 | frame->level_shift_value); |
1462 | hdmi_log(" downmix inhibit: %s\n" , |
1463 | frame->downmix_inhibit ? "Yes" : "No" ); |
1464 | } |
1465 | |
1466 | static void hdmi_drm_infoframe_log(const char *level, |
1467 | struct device *dev, |
1468 | const struct hdmi_drm_infoframe *frame) |
1469 | { |
1470 | int i; |
1471 | |
1472 | hdmi_infoframe_log_header(level, dev, |
1473 | frame: (struct hdmi_any_infoframe *)frame); |
1474 | hdmi_log("length: %d\n" , frame->length); |
1475 | hdmi_log("metadata type: %d\n" , frame->metadata_type); |
1476 | hdmi_log("eotf: %d\n" , frame->eotf); |
1477 | for (i = 0; i < 3; i++) { |
1478 | hdmi_log("x[%d]: %d\n" , i, frame->display_primaries[i].x); |
1479 | hdmi_log("y[%d]: %d\n" , i, frame->display_primaries[i].y); |
1480 | } |
1481 | |
1482 | hdmi_log("white point x: %d\n" , frame->white_point.x); |
1483 | hdmi_log("white point y: %d\n" , frame->white_point.y); |
1484 | |
1485 | hdmi_log("max_display_mastering_luminance: %d\n" , |
1486 | frame->max_display_mastering_luminance); |
1487 | hdmi_log("min_display_mastering_luminance: %d\n" , |
1488 | frame->min_display_mastering_luminance); |
1489 | |
1490 | hdmi_log("max_cll: %d\n" , frame->max_cll); |
1491 | hdmi_log("max_fall: %d\n" , frame->max_fall); |
1492 | } |
1493 | |
1494 | static const char * |
1495 | hdmi_3d_structure_get_name(enum hdmi_3d_structure s3d_struct) |
1496 | { |
1497 | if (s3d_struct < 0 || s3d_struct > 0xf) |
1498 | return "Invalid" ; |
1499 | |
1500 | switch (s3d_struct) { |
1501 | case HDMI_3D_STRUCTURE_FRAME_PACKING: |
1502 | return "Frame Packing" ; |
1503 | case HDMI_3D_STRUCTURE_FIELD_ALTERNATIVE: |
1504 | return "Field Alternative" ; |
1505 | case HDMI_3D_STRUCTURE_LINE_ALTERNATIVE: |
1506 | return "Line Alternative" ; |
1507 | case HDMI_3D_STRUCTURE_SIDE_BY_SIDE_FULL: |
1508 | return "Side-by-side (Full)" ; |
1509 | case HDMI_3D_STRUCTURE_L_DEPTH: |
1510 | return "L + Depth" ; |
1511 | case HDMI_3D_STRUCTURE_L_DEPTH_GFX_GFX_DEPTH: |
1512 | return "L + Depth + Graphics + Graphics-depth" ; |
1513 | case HDMI_3D_STRUCTURE_TOP_AND_BOTTOM: |
1514 | return "Top-and-Bottom" ; |
1515 | case HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF: |
1516 | return "Side-by-side (Half)" ; |
1517 | default: |
1518 | break; |
1519 | } |
1520 | return "Reserved" ; |
1521 | } |
1522 | |
1523 | static void |
1524 | hdmi_vendor_any_infoframe_log(const char *level, |
1525 | struct device *dev, |
1526 | const union hdmi_vendor_any_infoframe *frame) |
1527 | { |
1528 | const struct hdmi_vendor_infoframe *hvf = &frame->hdmi; |
1529 | |
1530 | hdmi_infoframe_log_header(level, dev, |
1531 | frame: (const struct hdmi_any_infoframe *)frame); |
1532 | |
1533 | if (frame->any.oui != HDMI_IEEE_OUI) { |
1534 | hdmi_log(" not a HDMI vendor infoframe\n" ); |
1535 | return; |
1536 | } |
1537 | if (hvf->vic == 0 && hvf->s3d_struct == HDMI_3D_STRUCTURE_INVALID) { |
1538 | hdmi_log(" empty frame\n" ); |
1539 | return; |
1540 | } |
1541 | |
1542 | if (hvf->vic) |
1543 | hdmi_log(" HDMI VIC: %u\n" , hvf->vic); |
1544 | if (hvf->s3d_struct != HDMI_3D_STRUCTURE_INVALID) { |
1545 | hdmi_log(" 3D structure: %s\n" , |
1546 | hdmi_3d_structure_get_name(hvf->s3d_struct)); |
1547 | if (hvf->s3d_struct >= HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF) |
1548 | hdmi_log(" 3D extension data: %d\n" , |
1549 | hvf->s3d_ext_data); |
1550 | } |
1551 | } |
1552 | |
1553 | /** |
1554 | * hdmi_infoframe_log() - log info of HDMI infoframe |
1555 | * @level: logging level |
1556 | * @dev: device |
1557 | * @frame: HDMI infoframe |
1558 | */ |
1559 | void hdmi_infoframe_log(const char *level, |
1560 | struct device *dev, |
1561 | const union hdmi_infoframe *frame) |
1562 | { |
1563 | switch (frame->any.type) { |
1564 | case HDMI_INFOFRAME_TYPE_AVI: |
1565 | hdmi_avi_infoframe_log(level, dev, frame: &frame->avi); |
1566 | break; |
1567 | case HDMI_INFOFRAME_TYPE_SPD: |
1568 | hdmi_spd_infoframe_log(level, dev, frame: &frame->spd); |
1569 | break; |
1570 | case HDMI_INFOFRAME_TYPE_AUDIO: |
1571 | hdmi_audio_infoframe_log(level, dev, frame: &frame->audio); |
1572 | break; |
1573 | case HDMI_INFOFRAME_TYPE_VENDOR: |
1574 | hdmi_vendor_any_infoframe_log(level, dev, frame: &frame->vendor); |
1575 | break; |
1576 | case HDMI_INFOFRAME_TYPE_DRM: |
1577 | hdmi_drm_infoframe_log(level, dev, frame: &frame->drm); |
1578 | break; |
1579 | } |
1580 | } |
1581 | EXPORT_SYMBOL(hdmi_infoframe_log); |
1582 | |
1583 | /** |
1584 | * hdmi_avi_infoframe_unpack() - unpack binary buffer to a HDMI AVI infoframe |
1585 | * @frame: HDMI AVI infoframe |
1586 | * @buffer: source buffer |
1587 | * @size: size of buffer |
1588 | * |
1589 | * Unpacks the information contained in binary @buffer into a structured |
1590 | * @frame of the HDMI Auxiliary Video (AVI) information frame. |
1591 | * Also verifies the checksum as required by section 5.3.5 of the HDMI 1.4 |
1592 | * specification. |
1593 | * |
1594 | * Returns 0 on success or a negative error code on failure. |
1595 | */ |
1596 | static int hdmi_avi_infoframe_unpack(struct hdmi_avi_infoframe *frame, |
1597 | const void *buffer, size_t size) |
1598 | { |
1599 | const u8 *ptr = buffer; |
1600 | |
1601 | if (size < HDMI_INFOFRAME_SIZE(AVI)) |
1602 | return -EINVAL; |
1603 | |
1604 | if (ptr[0] != HDMI_INFOFRAME_TYPE_AVI || |
1605 | ptr[1] != 2 || |
1606 | ptr[2] != HDMI_AVI_INFOFRAME_SIZE) |
1607 | return -EINVAL; |
1608 | |
1609 | if (hdmi_infoframe_checksum(ptr: buffer, HDMI_INFOFRAME_SIZE(AVI)) != 0) |
1610 | return -EINVAL; |
1611 | |
1612 | hdmi_avi_infoframe_init(frame); |
1613 | |
1614 | ptr += HDMI_INFOFRAME_HEADER_SIZE; |
1615 | |
1616 | frame->colorspace = (ptr[0] >> 5) & 0x3; |
1617 | if (ptr[0] & 0x10) |
1618 | frame->active_aspect = ptr[1] & 0xf; |
1619 | if (ptr[0] & 0x8) { |
1620 | frame->top_bar = (ptr[6] << 8) | ptr[5]; |
1621 | frame->bottom_bar = (ptr[8] << 8) | ptr[7]; |
1622 | } |
1623 | if (ptr[0] & 0x4) { |
1624 | frame->left_bar = (ptr[10] << 8) | ptr[9]; |
1625 | frame->right_bar = (ptr[12] << 8) | ptr[11]; |
1626 | } |
1627 | frame->scan_mode = ptr[0] & 0x3; |
1628 | |
1629 | frame->colorimetry = (ptr[1] >> 6) & 0x3; |
1630 | frame->picture_aspect = (ptr[1] >> 4) & 0x3; |
1631 | frame->active_aspect = ptr[1] & 0xf; |
1632 | |
1633 | frame->itc = ptr[2] & 0x80 ? true : false; |
1634 | frame->extended_colorimetry = (ptr[2] >> 4) & 0x7; |
1635 | frame->quantization_range = (ptr[2] >> 2) & 0x3; |
1636 | frame->nups = ptr[2] & 0x3; |
1637 | |
1638 | frame->video_code = ptr[3] & 0x7f; |
1639 | frame->ycc_quantization_range = (ptr[4] >> 6) & 0x3; |
1640 | frame->content_type = (ptr[4] >> 4) & 0x3; |
1641 | |
1642 | frame->pixel_repeat = ptr[4] & 0xf; |
1643 | |
1644 | return 0; |
1645 | } |
1646 | |
1647 | /** |
1648 | * hdmi_spd_infoframe_unpack() - unpack binary buffer to a HDMI SPD infoframe |
1649 | * @frame: HDMI SPD infoframe |
1650 | * @buffer: source buffer |
1651 | * @size: size of buffer |
1652 | * |
1653 | * Unpacks the information contained in binary @buffer into a structured |
1654 | * @frame of the HDMI Source Product Description (SPD) information frame. |
1655 | * Also verifies the checksum as required by section 5.3.5 of the HDMI 1.4 |
1656 | * specification. |
1657 | * |
1658 | * Returns 0 on success or a negative error code on failure. |
1659 | */ |
1660 | static int hdmi_spd_infoframe_unpack(struct hdmi_spd_infoframe *frame, |
1661 | const void *buffer, size_t size) |
1662 | { |
1663 | const u8 *ptr = buffer; |
1664 | int ret; |
1665 | |
1666 | if (size < HDMI_INFOFRAME_SIZE(SPD)) |
1667 | return -EINVAL; |
1668 | |
1669 | if (ptr[0] != HDMI_INFOFRAME_TYPE_SPD || |
1670 | ptr[1] != 1 || |
1671 | ptr[2] != HDMI_SPD_INFOFRAME_SIZE) { |
1672 | return -EINVAL; |
1673 | } |
1674 | |
1675 | if (hdmi_infoframe_checksum(ptr: buffer, HDMI_INFOFRAME_SIZE(SPD)) != 0) |
1676 | return -EINVAL; |
1677 | |
1678 | ptr += HDMI_INFOFRAME_HEADER_SIZE; |
1679 | |
1680 | ret = hdmi_spd_infoframe_init(frame, ptr, ptr + 8); |
1681 | if (ret) |
1682 | return ret; |
1683 | |
1684 | frame->sdi = ptr[24]; |
1685 | |
1686 | return 0; |
1687 | } |
1688 | |
1689 | /** |
1690 | * hdmi_audio_infoframe_unpack() - unpack binary buffer to a HDMI AUDIO infoframe |
1691 | * @frame: HDMI Audio infoframe |
1692 | * @buffer: source buffer |
1693 | * @size: size of buffer |
1694 | * |
1695 | * Unpacks the information contained in binary @buffer into a structured |
1696 | * @frame of the HDMI Audio information frame. |
1697 | * Also verifies the checksum as required by section 5.3.5 of the HDMI 1.4 |
1698 | * specification. |
1699 | * |
1700 | * Returns 0 on success or a negative error code on failure. |
1701 | */ |
1702 | static int hdmi_audio_infoframe_unpack(struct hdmi_audio_infoframe *frame, |
1703 | const void *buffer, size_t size) |
1704 | { |
1705 | const u8 *ptr = buffer; |
1706 | int ret; |
1707 | |
1708 | if (size < HDMI_INFOFRAME_SIZE(AUDIO)) |
1709 | return -EINVAL; |
1710 | |
1711 | if (ptr[0] != HDMI_INFOFRAME_TYPE_AUDIO || |
1712 | ptr[1] != 1 || |
1713 | ptr[2] != HDMI_AUDIO_INFOFRAME_SIZE) { |
1714 | return -EINVAL; |
1715 | } |
1716 | |
1717 | if (hdmi_infoframe_checksum(ptr: buffer, HDMI_INFOFRAME_SIZE(AUDIO)) != 0) |
1718 | return -EINVAL; |
1719 | |
1720 | ret = hdmi_audio_infoframe_init(frame); |
1721 | if (ret) |
1722 | return ret; |
1723 | |
1724 | ptr += HDMI_INFOFRAME_HEADER_SIZE; |
1725 | |
1726 | frame->channels = ptr[0] & 0x7; |
1727 | frame->coding_type = (ptr[0] >> 4) & 0xf; |
1728 | frame->sample_size = ptr[1] & 0x3; |
1729 | frame->sample_frequency = (ptr[1] >> 2) & 0x7; |
1730 | frame->coding_type_ext = ptr[2] & 0x1f; |
1731 | frame->channel_allocation = ptr[3]; |
1732 | frame->level_shift_value = (ptr[4] >> 3) & 0xf; |
1733 | frame->downmix_inhibit = ptr[4] & 0x80 ? true : false; |
1734 | |
1735 | return 0; |
1736 | } |
1737 | |
1738 | /** |
1739 | * hdmi_vendor_any_infoframe_unpack() - unpack binary buffer to a HDMI |
1740 | * vendor infoframe |
1741 | * @frame: HDMI Vendor infoframe |
1742 | * @buffer: source buffer |
1743 | * @size: size of buffer |
1744 | * |
1745 | * Unpacks the information contained in binary @buffer into a structured |
1746 | * @frame of the HDMI Vendor information frame. |
1747 | * Also verifies the checksum as required by section 5.3.5 of the HDMI 1.4 |
1748 | * specification. |
1749 | * |
1750 | * Returns 0 on success or a negative error code on failure. |
1751 | */ |
1752 | static int |
1753 | hdmi_vendor_any_infoframe_unpack(union hdmi_vendor_any_infoframe *frame, |
1754 | const void *buffer, size_t size) |
1755 | { |
1756 | const u8 *ptr = buffer; |
1757 | size_t length; |
1758 | int ret; |
1759 | u8 hdmi_video_format; |
1760 | struct hdmi_vendor_infoframe *hvf = &frame->hdmi; |
1761 | |
1762 | if (size < HDMI_INFOFRAME_HEADER_SIZE) |
1763 | return -EINVAL; |
1764 | |
1765 | if (ptr[0] != HDMI_INFOFRAME_TYPE_VENDOR || |
1766 | ptr[1] != 1 || |
1767 | (ptr[2] != 4 && ptr[2] != 5 && ptr[2] != 6)) |
1768 | return -EINVAL; |
1769 | |
1770 | length = ptr[2]; |
1771 | |
1772 | if (size < HDMI_INFOFRAME_HEADER_SIZE + length) |
1773 | return -EINVAL; |
1774 | |
1775 | if (hdmi_infoframe_checksum(ptr: buffer, |
1776 | HDMI_INFOFRAME_HEADER_SIZE + length) != 0) |
1777 | return -EINVAL; |
1778 | |
1779 | ptr += HDMI_INFOFRAME_HEADER_SIZE; |
1780 | |
1781 | /* HDMI OUI */ |
1782 | if ((ptr[0] != 0x03) || |
1783 | (ptr[1] != 0x0c) || |
1784 | (ptr[2] != 0x00)) |
1785 | return -EINVAL; |
1786 | |
1787 | hdmi_video_format = ptr[3] >> 5; |
1788 | |
1789 | if (hdmi_video_format > 0x2) |
1790 | return -EINVAL; |
1791 | |
1792 | ret = hdmi_vendor_infoframe_init(hvf); |
1793 | if (ret) |
1794 | return ret; |
1795 | |
1796 | hvf->length = length; |
1797 | |
1798 | if (hdmi_video_format == 0x2) { |
1799 | if (length != 5 && length != 6) |
1800 | return -EINVAL; |
1801 | hvf->s3d_struct = ptr[4] >> 4; |
1802 | if (hvf->s3d_struct >= HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF) { |
1803 | if (length != 6) |
1804 | return -EINVAL; |
1805 | hvf->s3d_ext_data = ptr[5] >> 4; |
1806 | } |
1807 | } else if (hdmi_video_format == 0x1) { |
1808 | if (length != 5) |
1809 | return -EINVAL; |
1810 | hvf->vic = ptr[4]; |
1811 | } else { |
1812 | if (length != 4) |
1813 | return -EINVAL; |
1814 | } |
1815 | |
1816 | return 0; |
1817 | } |
1818 | |
1819 | /** |
1820 | * hdmi_drm_infoframe_unpack_only() - unpack binary buffer of CTA-861-G DRM |
1821 | * infoframe DataBytes to a HDMI DRM |
1822 | * infoframe |
1823 | * @frame: HDMI DRM infoframe |
1824 | * @buffer: source buffer |
1825 | * @size: size of buffer |
1826 | * |
1827 | * Unpacks CTA-861-G DRM infoframe DataBytes contained in the binary @buffer |
1828 | * into a structured @frame of the HDMI Dynamic Range and Mastering (DRM) |
1829 | * infoframe. |
1830 | * |
1831 | * Returns 0 on success or a negative error code on failure. |
1832 | */ |
1833 | int hdmi_drm_infoframe_unpack_only(struct hdmi_drm_infoframe *frame, |
1834 | const void *buffer, size_t size) |
1835 | { |
1836 | const u8 *ptr = buffer; |
1837 | const u8 *temp; |
1838 | u8 x_lsb, x_msb; |
1839 | u8 y_lsb, y_msb; |
1840 | int ret; |
1841 | int i; |
1842 | |
1843 | if (size < HDMI_DRM_INFOFRAME_SIZE) |
1844 | return -EINVAL; |
1845 | |
1846 | ret = hdmi_drm_infoframe_init(frame); |
1847 | if (ret) |
1848 | return ret; |
1849 | |
1850 | frame->eotf = ptr[0] & 0x7; |
1851 | frame->metadata_type = ptr[1] & 0x7; |
1852 | |
1853 | temp = ptr + 2; |
1854 | for (i = 0; i < 3; i++) { |
1855 | x_lsb = *temp++; |
1856 | x_msb = *temp++; |
1857 | frame->display_primaries[i].x = (x_msb << 8) | x_lsb; |
1858 | y_lsb = *temp++; |
1859 | y_msb = *temp++; |
1860 | frame->display_primaries[i].y = (y_msb << 8) | y_lsb; |
1861 | } |
1862 | |
1863 | frame->white_point.x = (ptr[15] << 8) | ptr[14]; |
1864 | frame->white_point.y = (ptr[17] << 8) | ptr[16]; |
1865 | |
1866 | frame->max_display_mastering_luminance = (ptr[19] << 8) | ptr[18]; |
1867 | frame->min_display_mastering_luminance = (ptr[21] << 8) | ptr[20]; |
1868 | frame->max_cll = (ptr[23] << 8) | ptr[22]; |
1869 | frame->max_fall = (ptr[25] << 8) | ptr[24]; |
1870 | |
1871 | return 0; |
1872 | } |
1873 | EXPORT_SYMBOL(hdmi_drm_infoframe_unpack_only); |
1874 | |
1875 | /** |
1876 | * hdmi_drm_infoframe_unpack() - unpack binary buffer to a HDMI DRM infoframe |
1877 | * @frame: HDMI DRM infoframe |
1878 | * @buffer: source buffer |
1879 | * @size: size of buffer |
1880 | * |
1881 | * Unpacks the CTA-861-G DRM infoframe contained in the binary @buffer into |
1882 | * a structured @frame of the HDMI Dynamic Range and Mastering (DRM) |
1883 | * infoframe. It also verifies the checksum as required by section 5.3.5 of |
1884 | * the HDMI 1.4 specification. |
1885 | * |
1886 | * Returns 0 on success or a negative error code on failure. |
1887 | */ |
1888 | static int hdmi_drm_infoframe_unpack(struct hdmi_drm_infoframe *frame, |
1889 | const void *buffer, size_t size) |
1890 | { |
1891 | const u8 *ptr = buffer; |
1892 | int ret; |
1893 | |
1894 | if (size < HDMI_INFOFRAME_SIZE(DRM)) |
1895 | return -EINVAL; |
1896 | |
1897 | if (ptr[0] != HDMI_INFOFRAME_TYPE_DRM || |
1898 | ptr[1] != 1 || |
1899 | ptr[2] != HDMI_DRM_INFOFRAME_SIZE) |
1900 | return -EINVAL; |
1901 | |
1902 | if (hdmi_infoframe_checksum(ptr: buffer, HDMI_INFOFRAME_SIZE(DRM)) != 0) |
1903 | return -EINVAL; |
1904 | |
1905 | ret = hdmi_drm_infoframe_unpack_only(frame, ptr + HDMI_INFOFRAME_HEADER_SIZE, |
1906 | size - HDMI_INFOFRAME_HEADER_SIZE); |
1907 | return ret; |
1908 | } |
1909 | |
1910 | /** |
1911 | * hdmi_infoframe_unpack() - unpack binary buffer to a HDMI infoframe |
1912 | * @frame: HDMI infoframe |
1913 | * @buffer: source buffer |
1914 | * @size: size of buffer |
1915 | * |
1916 | * Unpacks the information contained in binary buffer @buffer into a structured |
1917 | * @frame of a HDMI infoframe. |
1918 | * Also verifies the checksum as required by section 5.3.5 of the HDMI 1.4 |
1919 | * specification. |
1920 | * |
1921 | * Returns 0 on success or a negative error code on failure. |
1922 | */ |
1923 | int hdmi_infoframe_unpack(union hdmi_infoframe *frame, |
1924 | const void *buffer, size_t size) |
1925 | { |
1926 | int ret; |
1927 | const u8 *ptr = buffer; |
1928 | |
1929 | if (size < HDMI_INFOFRAME_HEADER_SIZE) |
1930 | return -EINVAL; |
1931 | |
1932 | switch (ptr[0]) { |
1933 | case HDMI_INFOFRAME_TYPE_AVI: |
1934 | ret = hdmi_avi_infoframe_unpack(frame: &frame->avi, buffer, size); |
1935 | break; |
1936 | case HDMI_INFOFRAME_TYPE_DRM: |
1937 | ret = hdmi_drm_infoframe_unpack(frame: &frame->drm, buffer, size); |
1938 | break; |
1939 | case HDMI_INFOFRAME_TYPE_SPD: |
1940 | ret = hdmi_spd_infoframe_unpack(frame: &frame->spd, buffer, size); |
1941 | break; |
1942 | case HDMI_INFOFRAME_TYPE_AUDIO: |
1943 | ret = hdmi_audio_infoframe_unpack(frame: &frame->audio, buffer, size); |
1944 | break; |
1945 | case HDMI_INFOFRAME_TYPE_VENDOR: |
1946 | ret = hdmi_vendor_any_infoframe_unpack(frame: &frame->vendor, buffer, size); |
1947 | break; |
1948 | default: |
1949 | ret = -EINVAL; |
1950 | break; |
1951 | } |
1952 | |
1953 | return ret; |
1954 | } |
1955 | EXPORT_SYMBOL(hdmi_infoframe_unpack); |
1956 | |