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f142d3bd TR |
1 | /* |
2 | * Copyright (C) 2012 Avionic Design GmbH | |
3 | * | |
96d672e0 TR |
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. | |
f142d3bd TR |
22 | */ |
23 | ||
24 | #include <linux/bitops.h> | |
72b09896 | 25 | #include <linux/bug.h> |
f142d3bd TR |
26 | #include <linux/errno.h> |
27 | #include <linux/export.h> | |
28 | #include <linux/hdmi.h> | |
29 | #include <linux/string.h> | |
2c676f37 | 30 | #include <linux/device.h> |
f142d3bd | 31 | |
2c676f37 MB |
32 | #define hdmi_log(fmt, ...) dev_printk(level, dev, fmt, ##__VA_ARGS__) |
33 | ||
34 | static u8 hdmi_infoframe_checksum(u8 *ptr, size_t size) | |
f142d3bd | 35 | { |
f142d3bd TR |
36 | u8 csum = 0; |
37 | size_t i; | |
38 | ||
39 | /* compute checksum */ | |
40 | for (i = 0; i < size; i++) | |
41 | csum += ptr[i]; | |
42 | ||
2c676f37 MB |
43 | return 256 - csum; |
44 | } | |
45 | ||
46 | static void hdmi_infoframe_set_checksum(void *buffer, size_t size) | |
47 | { | |
48 | u8 *ptr = buffer; | |
49 | ||
50 | ptr[3] = hdmi_infoframe_checksum(buffer, size); | |
f142d3bd TR |
51 | } |
52 | ||
53 | /** | |
54 | * hdmi_avi_infoframe_init() - initialize an HDMI AVI infoframe | |
55 | * @frame: HDMI AVI infoframe | |
56 | * | |
57 | * Returns 0 on success or a negative error code on failure. | |
58 | */ | |
59 | int hdmi_avi_infoframe_init(struct hdmi_avi_infoframe *frame) | |
60 | { | |
61 | memset(frame, 0, sizeof(*frame)); | |
62 | ||
63 | frame->type = HDMI_INFOFRAME_TYPE_AVI; | |
64 | frame->version = 2; | |
3c6b054d | 65 | frame->length = HDMI_AVI_INFOFRAME_SIZE; |
f142d3bd TR |
66 | |
67 | return 0; | |
68 | } | |
69 | EXPORT_SYMBOL(hdmi_avi_infoframe_init); | |
70 | ||
71 | /** | |
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 | |
76 | * | |
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. | |
81 | * | |
82 | * Returns the number of bytes packed into the binary buffer or a negative | |
83 | * error code on failure. | |
84 | */ | |
85 | ssize_t hdmi_avi_infoframe_pack(struct hdmi_avi_infoframe *frame, void *buffer, | |
86 | size_t size) | |
87 | { | |
88 | u8 *ptr = buffer; | |
89 | size_t length; | |
90 | ||
91 | length = HDMI_INFOFRAME_HEADER_SIZE + frame->length; | |
92 | ||
93 | if (size < length) | |
94 | return -ENOSPC; | |
95 | ||
3b390f62 | 96 | memset(buffer, 0, size); |
f142d3bd TR |
97 | |
98 | ptr[0] = frame->type; | |
99 | ptr[1] = frame->version; | |
100 | ptr[2] = frame->length; | |
101 | ptr[3] = 0; /* checksum */ | |
102 | ||
103 | /* start infoframe payload */ | |
104 | ptr += HDMI_INFOFRAME_HEADER_SIZE; | |
105 | ||
106 | ptr[0] = ((frame->colorspace & 0x3) << 5) | (frame->scan_mode & 0x3); | |
107 | ||
a5ad3dcf LD |
108 | /* |
109 | * Data byte 1, bit 4 has to be set if we provide the active format | |
110 | * aspect ratio | |
111 | */ | |
112 | if (frame->active_aspect & 0xf) | |
f142d3bd TR |
113 | ptr[0] |= BIT(4); |
114 | ||
974e0701 LD |
115 | /* Bit 3 and 2 indicate if we transmit horizontal/vertical bar data */ |
116 | if (frame->top_bar || frame->bottom_bar) | |
f142d3bd TR |
117 | ptr[0] |= BIT(3); |
118 | ||
974e0701 | 119 | if (frame->left_bar || frame->right_bar) |
f142d3bd TR |
120 | ptr[0] |= BIT(2); |
121 | ||
122 | ptr[1] = ((frame->colorimetry & 0x3) << 6) | | |
123 | ((frame->picture_aspect & 0x3) << 4) | | |
124 | (frame->active_aspect & 0xf); | |
125 | ||
126 | ptr[2] = ((frame->extended_colorimetry & 0x7) << 4) | | |
127 | ((frame->quantization_range & 0x3) << 2) | | |
128 | (frame->nups & 0x3); | |
129 | ||
130 | if (frame->itc) | |
131 | ptr[2] |= BIT(7); | |
132 | ||
133 | ptr[3] = frame->video_code & 0x7f; | |
134 | ||
135 | ptr[4] = ((frame->ycc_quantization_range & 0x3) << 6) | | |
136 | ((frame->content_type & 0x3) << 4) | | |
137 | (frame->pixel_repeat & 0xf); | |
138 | ||
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; | |
147 | ||
2c676f37 | 148 | hdmi_infoframe_set_checksum(buffer, length); |
f142d3bd TR |
149 | |
150 | return length; | |
151 | } | |
152 | EXPORT_SYMBOL(hdmi_avi_infoframe_pack); | |
153 | ||
154 | /** | |
155 | * hdmi_spd_infoframe_init() - initialize an HDMI SPD infoframe | |
156 | * @frame: HDMI SPD infoframe | |
157 | * @vendor: vendor string | |
158 | * @product: product string | |
159 | * | |
160 | * Returns 0 on success or a negative error code on failure. | |
161 | */ | |
162 | int hdmi_spd_infoframe_init(struct hdmi_spd_infoframe *frame, | |
163 | const char *vendor, const char *product) | |
164 | { | |
165 | memset(frame, 0, sizeof(*frame)); | |
166 | ||
167 | frame->type = HDMI_INFOFRAME_TYPE_SPD; | |
168 | frame->version = 1; | |
3c6b054d | 169 | frame->length = HDMI_SPD_INFOFRAME_SIZE; |
f142d3bd TR |
170 | |
171 | strncpy(frame->vendor, vendor, sizeof(frame->vendor)); | |
172 | strncpy(frame->product, product, sizeof(frame->product)); | |
173 | ||
174 | return 0; | |
175 | } | |
176 | EXPORT_SYMBOL(hdmi_spd_infoframe_init); | |
177 | ||
178 | /** | |
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 | |
183 | * | |
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. | |
188 | * | |
189 | * Returns the number of bytes packed into the binary buffer or a negative | |
190 | * error code on failure. | |
191 | */ | |
192 | ssize_t hdmi_spd_infoframe_pack(struct hdmi_spd_infoframe *frame, void *buffer, | |
193 | size_t size) | |
194 | { | |
195 | u8 *ptr = buffer; | |
196 | size_t length; | |
197 | ||
198 | length = HDMI_INFOFRAME_HEADER_SIZE + frame->length; | |
199 | ||
200 | if (size < length) | |
201 | return -ENOSPC; | |
202 | ||
3b390f62 | 203 | memset(buffer, 0, size); |
f142d3bd TR |
204 | |
205 | ptr[0] = frame->type; | |
206 | ptr[1] = frame->version; | |
207 | ptr[2] = frame->length; | |
208 | ptr[3] = 0; /* checksum */ | |
209 | ||
210 | /* start infoframe payload */ | |
211 | ptr += HDMI_INFOFRAME_HEADER_SIZE; | |
212 | ||
213 | memcpy(ptr, frame->vendor, sizeof(frame->vendor)); | |
214 | memcpy(ptr + 8, frame->product, sizeof(frame->product)); | |
215 | ||
216 | ptr[24] = frame->sdi; | |
217 | ||
2c676f37 | 218 | hdmi_infoframe_set_checksum(buffer, length); |
f142d3bd TR |
219 | |
220 | return length; | |
221 | } | |
222 | EXPORT_SYMBOL(hdmi_spd_infoframe_pack); | |
223 | ||
224 | /** | |
225 | * hdmi_audio_infoframe_init() - initialize an HDMI audio infoframe | |
226 | * @frame: HDMI audio infoframe | |
227 | * | |
228 | * Returns 0 on success or a negative error code on failure. | |
229 | */ | |
230 | int hdmi_audio_infoframe_init(struct hdmi_audio_infoframe *frame) | |
231 | { | |
232 | memset(frame, 0, sizeof(*frame)); | |
233 | ||
234 | frame->type = HDMI_INFOFRAME_TYPE_AUDIO; | |
235 | frame->version = 1; | |
3c6b054d | 236 | frame->length = HDMI_AUDIO_INFOFRAME_SIZE; |
f142d3bd TR |
237 | |
238 | return 0; | |
239 | } | |
240 | EXPORT_SYMBOL(hdmi_audio_infoframe_init); | |
241 | ||
242 | /** | |
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 | |
247 | * | |
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. | |
252 | * | |
253 | * Returns the number of bytes packed into the binary buffer or a negative | |
254 | * error code on failure. | |
255 | */ | |
256 | ssize_t hdmi_audio_infoframe_pack(struct hdmi_audio_infoframe *frame, | |
257 | void *buffer, size_t size) | |
258 | { | |
259 | unsigned char channels; | |
260 | u8 *ptr = buffer; | |
261 | size_t length; | |
262 | ||
263 | length = HDMI_INFOFRAME_HEADER_SIZE + frame->length; | |
264 | ||
265 | if (size < length) | |
266 | return -ENOSPC; | |
267 | ||
3b390f62 | 268 | memset(buffer, 0, size); |
f142d3bd TR |
269 | |
270 | if (frame->channels >= 2) | |
271 | channels = frame->channels - 1; | |
272 | else | |
273 | channels = 0; | |
274 | ||
275 | ptr[0] = frame->type; | |
276 | ptr[1] = frame->version; | |
277 | ptr[2] = frame->length; | |
278 | ptr[3] = 0; /* checksum */ | |
279 | ||
280 | /* start infoframe payload */ | |
281 | ptr += HDMI_INFOFRAME_HEADER_SIZE; | |
282 | ||
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; | |
289 | ||
290 | if (frame->downmix_inhibit) | |
291 | ptr[4] |= BIT(7); | |
292 | ||
2c676f37 | 293 | hdmi_infoframe_set_checksum(buffer, length); |
f142d3bd TR |
294 | |
295 | return length; | |
296 | } | |
297 | EXPORT_SYMBOL(hdmi_audio_infoframe_pack); | |
298 | ||
7d27becb | 299 | /** |
ae84b900 | 300 | * hdmi_vendor_infoframe_init() - initialize an HDMI vendor infoframe |
7d27becb LD |
301 | * @frame: HDMI vendor infoframe |
302 | * | |
303 | * Returns 0 on success or a negative error code on failure. | |
304 | */ | |
ae84b900 | 305 | int hdmi_vendor_infoframe_init(struct hdmi_vendor_infoframe *frame) |
7d27becb LD |
306 | { |
307 | memset(frame, 0, sizeof(*frame)); | |
308 | ||
309 | frame->type = HDMI_INFOFRAME_TYPE_VENDOR; | |
310 | frame->version = 1; | |
311 | ||
6cb3b7f1 | 312 | frame->oui = HDMI_IEEE_OUI; |
af3e95b4 | 313 | |
7d27becb LD |
314 | /* |
315 | * 0 is a valid value for s3d_struct, so we use a special "not set" | |
316 | * value | |
317 | */ | |
318 | frame->s3d_struct = HDMI_3D_STRUCTURE_INVALID; | |
319 | ||
320 | return 0; | |
321 | } | |
ae84b900 | 322 | EXPORT_SYMBOL(hdmi_vendor_infoframe_init); |
7d27becb LD |
323 | |
324 | /** | |
ae84b900 | 325 | * hdmi_vendor_infoframe_pack() - write a HDMI vendor infoframe to binary buffer |
7d27becb LD |
326 | * @frame: HDMI infoframe |
327 | * @buffer: destination buffer | |
328 | * @size: size of buffer | |
329 | * | |
330 | * Packs the information contained in the @frame structure into a binary | |
331 | * representation that can be written into the corresponding controller | |
332 | * registers. Also computes the checksum as required by section 5.3.5 of | |
333 | * the HDMI 1.4 specification. | |
334 | * | |
335 | * Returns the number of bytes packed into the binary buffer or a negative | |
336 | * error code on failure. | |
337 | */ | |
ae84b900 | 338 | ssize_t hdmi_vendor_infoframe_pack(struct hdmi_vendor_infoframe *frame, |
7d27becb LD |
339 | void *buffer, size_t size) |
340 | { | |
341 | u8 *ptr = buffer; | |
342 | size_t length; | |
343 | ||
344 | /* empty info frame */ | |
345 | if (frame->vic == 0 && frame->s3d_struct == HDMI_3D_STRUCTURE_INVALID) | |
346 | return -EINVAL; | |
347 | ||
348 | /* only one of those can be supplied */ | |
349 | if (frame->vic != 0 && frame->s3d_struct != HDMI_3D_STRUCTURE_INVALID) | |
350 | return -EINVAL; | |
351 | ||
352 | /* for side by side (half) we also need to provide 3D_Ext_Data */ | |
353 | if (frame->s3d_struct >= HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF) | |
354 | frame->length = 6; | |
355 | else | |
356 | frame->length = 5; | |
357 | ||
358 | length = HDMI_INFOFRAME_HEADER_SIZE + frame->length; | |
359 | ||
360 | if (size < length) | |
361 | return -ENOSPC; | |
362 | ||
363 | memset(buffer, 0, size); | |
364 | ||
365 | ptr[0] = frame->type; | |
366 | ptr[1] = frame->version; | |
367 | ptr[2] = frame->length; | |
368 | ptr[3] = 0; /* checksum */ | |
369 | ||
370 | /* HDMI OUI */ | |
371 | ptr[4] = 0x03; | |
372 | ptr[5] = 0x0c; | |
373 | ptr[6] = 0x00; | |
374 | ||
375 | if (frame->vic) { | |
376 | ptr[7] = 0x1 << 5; /* video format */ | |
377 | ptr[8] = frame->vic; | |
378 | } else { | |
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 | } | |
384 | ||
2c676f37 | 385 | hdmi_infoframe_set_checksum(buffer, length); |
7d27becb LD |
386 | |
387 | return length; | |
388 | } | |
ae84b900 | 389 | EXPORT_SYMBOL(hdmi_vendor_infoframe_pack); |
7d27becb | 390 | |
af3e95b4 | 391 | /* |
ae84b900 | 392 | * hdmi_vendor_any_infoframe_pack() - write a vendor infoframe to binary buffer |
f142d3bd | 393 | */ |
ae84b900 LD |
394 | static ssize_t |
395 | hdmi_vendor_any_infoframe_pack(union hdmi_vendor_any_infoframe *frame, | |
396 | void *buffer, size_t size) | |
f142d3bd | 397 | { |
af3e95b4 | 398 | /* we only know about HDMI vendor infoframes */ |
6cb3b7f1 | 399 | if (frame->any.oui != HDMI_IEEE_OUI) |
af3e95b4 | 400 | return -EINVAL; |
f142d3bd | 401 | |
ae84b900 | 402 | return hdmi_vendor_infoframe_pack(&frame->hdmi, buffer, size); |
f142d3bd | 403 | } |
72b09896 DL |
404 | |
405 | /** | |
406 | * hdmi_infoframe_pack() - write a HDMI infoframe to binary buffer | |
407 | * @frame: HDMI infoframe | |
408 | * @buffer: destination buffer | |
409 | * @size: size of buffer | |
410 | * | |
411 | * Packs the information contained in the @frame structure into a binary | |
412 | * representation that can be written into the corresponding controller | |
413 | * registers. Also computes the checksum as required by section 5.3.5 of | |
414 | * the HDMI 1.4 specification. | |
415 | * | |
416 | * Returns the number of bytes packed into the binary buffer or a negative | |
417 | * error code on failure. | |
418 | */ | |
419 | ssize_t | |
420 | hdmi_infoframe_pack(union hdmi_infoframe *frame, void *buffer, size_t size) | |
421 | { | |
422 | ssize_t length; | |
423 | ||
424 | switch (frame->any.type) { | |
425 | case HDMI_INFOFRAME_TYPE_AVI: | |
426 | length = hdmi_avi_infoframe_pack(&frame->avi, buffer, size); | |
427 | break; | |
428 | case HDMI_INFOFRAME_TYPE_SPD: | |
429 | length = hdmi_spd_infoframe_pack(&frame->spd, buffer, size); | |
430 | break; | |
431 | case HDMI_INFOFRAME_TYPE_AUDIO: | |
432 | length = hdmi_audio_infoframe_pack(&frame->audio, buffer, size); | |
433 | break; | |
434 | case HDMI_INFOFRAME_TYPE_VENDOR: | |
ae84b900 LD |
435 | length = hdmi_vendor_any_infoframe_pack(&frame->vendor, |
436 | buffer, size); | |
72b09896 DL |
437 | break; |
438 | default: | |
439 | WARN(1, "Bad infoframe type %d\n", frame->any.type); | |
440 | length = -EINVAL; | |
441 | } | |
442 | ||
443 | return length; | |
444 | } | |
445 | EXPORT_SYMBOL(hdmi_infoframe_pack); | |
2c676f37 MB |
446 | |
447 | static const char *hdmi_infoframe_type_get_name(enum hdmi_infoframe_type type) | |
448 | { | |
449 | if (type < 0x80 || type > 0x9f) | |
450 | return "Invalid"; | |
451 | switch (type) { | |
452 | case HDMI_INFOFRAME_TYPE_VENDOR: | |
453 | return "Vendor"; | |
454 | case HDMI_INFOFRAME_TYPE_AVI: | |
455 | return "Auxiliary Video Information (AVI)"; | |
456 | case HDMI_INFOFRAME_TYPE_SPD: | |
457 | return "Source Product Description (SPD)"; | |
458 | case HDMI_INFOFRAME_TYPE_AUDIO: | |
459 | return "Audio"; | |
460 | } | |
461 | return "Reserved"; | |
462 | } | |
463 | ||
464 | static void hdmi_infoframe_log_header(const char *level, | |
465 | struct device *dev, | |
466 | struct hdmi_any_infoframe *frame) | |
467 | { | |
468 | hdmi_log("HDMI infoframe: %s, version %u, length %u\n", | |
469 | hdmi_infoframe_type_get_name(frame->type), | |
470 | frame->version, frame->length); | |
471 | } | |
472 | ||
473 | static const char *hdmi_colorspace_get_name(enum hdmi_colorspace colorspace) | |
474 | { | |
475 | switch (colorspace) { | |
476 | case HDMI_COLORSPACE_RGB: | |
477 | return "RGB"; | |
478 | case HDMI_COLORSPACE_YUV422: | |
479 | return "YCbCr 4:2:2"; | |
480 | case HDMI_COLORSPACE_YUV444: | |
481 | return "YCbCr 4:4:4"; | |
482 | case HDMI_COLORSPACE_YUV420: | |
483 | return "YCbCr 4:2:0"; | |
484 | case HDMI_COLORSPACE_RESERVED4: | |
485 | return "Reserved (4)"; | |
486 | case HDMI_COLORSPACE_RESERVED5: | |
487 | return "Reserved (5)"; | |
488 | case HDMI_COLORSPACE_RESERVED6: | |
489 | return "Reserved (6)"; | |
490 | case HDMI_COLORSPACE_IDO_DEFINED: | |
491 | return "IDO Defined"; | |
492 | } | |
493 | return "Invalid"; | |
494 | } | |
495 | ||
496 | static const char *hdmi_scan_mode_get_name(enum hdmi_scan_mode scan_mode) | |
497 | { | |
498 | switch (scan_mode) { | |
499 | case HDMI_SCAN_MODE_NONE: | |
500 | return "No Data"; | |
501 | case HDMI_SCAN_MODE_OVERSCAN: | |
502 | return "Overscan"; | |
503 | case HDMI_SCAN_MODE_UNDERSCAN: | |
504 | return "Underscan"; | |
505 | case HDMI_SCAN_MODE_RESERVED: | |
506 | return "Reserved"; | |
507 | } | |
508 | return "Invalid"; | |
509 | } | |
510 | ||
511 | static const char *hdmi_colorimetry_get_name(enum hdmi_colorimetry colorimetry) | |
512 | { | |
513 | switch (colorimetry) { | |
514 | case HDMI_COLORIMETRY_NONE: | |
515 | return "No Data"; | |
516 | case HDMI_COLORIMETRY_ITU_601: | |
517 | return "ITU601"; | |
518 | case HDMI_COLORIMETRY_ITU_709: | |
519 | return "ITU709"; | |
520 | case HDMI_COLORIMETRY_EXTENDED: | |
521 | return "Extended"; | |
522 | } | |
523 | return "Invalid"; | |
524 | } | |
525 | ||
526 | static const char * | |
527 | hdmi_picture_aspect_get_name(enum hdmi_picture_aspect picture_aspect) | |
528 | { | |
529 | switch (picture_aspect) { | |
530 | case HDMI_PICTURE_ASPECT_NONE: | |
531 | return "No Data"; | |
532 | case HDMI_PICTURE_ASPECT_4_3: | |
533 | return "4:3"; | |
534 | case HDMI_PICTURE_ASPECT_16_9: | |
535 | return "16:9"; | |
a6e78b3e SS |
536 | case HDMI_PICTURE_ASPECT_64_27: |
537 | return "64:27"; | |
538 | case HDMI_PICTURE_ASPECT_256_135: | |
539 | return "256:135"; | |
2c676f37 MB |
540 | case HDMI_PICTURE_ASPECT_RESERVED: |
541 | return "Reserved"; | |
542 | } | |
543 | return "Invalid"; | |
544 | } | |
545 | ||
546 | static const char * | |
547 | hdmi_active_aspect_get_name(enum hdmi_active_aspect active_aspect) | |
548 | { | |
549 | if (active_aspect < 0 || active_aspect > 0xf) | |
550 | return "Invalid"; | |
551 | ||
552 | switch (active_aspect) { | |
553 | case HDMI_ACTIVE_ASPECT_16_9_TOP: | |
554 | return "16:9 Top"; | |
555 | case HDMI_ACTIVE_ASPECT_14_9_TOP: | |
556 | return "14:9 Top"; | |
557 | case HDMI_ACTIVE_ASPECT_16_9_CENTER: | |
558 | return "16:9 Center"; | |
559 | case HDMI_ACTIVE_ASPECT_PICTURE: | |
560 | return "Same as Picture"; | |
561 | case HDMI_ACTIVE_ASPECT_4_3: | |
562 | return "4:3"; | |
563 | case HDMI_ACTIVE_ASPECT_16_9: | |
564 | return "16:9"; | |
565 | case HDMI_ACTIVE_ASPECT_14_9: | |
566 | return "14:9"; | |
567 | case HDMI_ACTIVE_ASPECT_4_3_SP_14_9: | |
568 | return "4:3 SP 14:9"; | |
569 | case HDMI_ACTIVE_ASPECT_16_9_SP_14_9: | |
570 | return "16:9 SP 14:9"; | |
571 | case HDMI_ACTIVE_ASPECT_16_9_SP_4_3: | |
572 | return "16:9 SP 4:3"; | |
573 | } | |
574 | return "Reserved"; | |
575 | } | |
576 | ||
577 | static const char * | |
578 | hdmi_extended_colorimetry_get_name(enum hdmi_extended_colorimetry ext_col) | |
579 | { | |
580 | switch (ext_col) { | |
581 | case HDMI_EXTENDED_COLORIMETRY_XV_YCC_601: | |
582 | return "xvYCC 601"; | |
583 | case HDMI_EXTENDED_COLORIMETRY_XV_YCC_709: | |
584 | return "xvYCC 709"; | |
585 | case HDMI_EXTENDED_COLORIMETRY_S_YCC_601: | |
586 | return "sYCC 601"; | |
587 | case HDMI_EXTENDED_COLORIMETRY_ADOBE_YCC_601: | |
588 | return "Adobe YCC 601"; | |
589 | case HDMI_EXTENDED_COLORIMETRY_ADOBE_RGB: | |
590 | return "Adobe RGB"; | |
591 | case HDMI_EXTENDED_COLORIMETRY_BT2020_CONST_LUM: | |
592 | return "BT.2020 Constant Luminance"; | |
593 | case HDMI_EXTENDED_COLORIMETRY_BT2020: | |
594 | return "BT.2020"; | |
595 | case HDMI_EXTENDED_COLORIMETRY_RESERVED: | |
596 | return "Reserved"; | |
597 | } | |
598 | return "Invalid"; | |
599 | } | |
600 | ||
601 | static const char * | |
602 | hdmi_quantization_range_get_name(enum hdmi_quantization_range qrange) | |
603 | { | |
604 | switch (qrange) { | |
605 | case HDMI_QUANTIZATION_RANGE_DEFAULT: | |
606 | return "Default"; | |
607 | case HDMI_QUANTIZATION_RANGE_LIMITED: | |
608 | return "Limited"; | |
609 | case HDMI_QUANTIZATION_RANGE_FULL: | |
610 | return "Full"; | |
611 | case HDMI_QUANTIZATION_RANGE_RESERVED: | |
612 | return "Reserved"; | |
613 | } | |
614 | return "Invalid"; | |
615 | } | |
616 | ||
617 | static const char *hdmi_nups_get_name(enum hdmi_nups nups) | |
618 | { | |
619 | switch (nups) { | |
620 | case HDMI_NUPS_UNKNOWN: | |
621 | return "Unknown Non-uniform Scaling"; | |
622 | case HDMI_NUPS_HORIZONTAL: | |
623 | return "Horizontally Scaled"; | |
624 | case HDMI_NUPS_VERTICAL: | |
625 | return "Vertically Scaled"; | |
626 | case HDMI_NUPS_BOTH: | |
627 | return "Horizontally and Vertically Scaled"; | |
628 | } | |
629 | return "Invalid"; | |
630 | } | |
631 | ||
632 | static const char * | |
633 | hdmi_ycc_quantization_range_get_name(enum hdmi_ycc_quantization_range qrange) | |
634 | { | |
635 | switch (qrange) { | |
636 | case HDMI_YCC_QUANTIZATION_RANGE_LIMITED: | |
637 | return "Limited"; | |
638 | case HDMI_YCC_QUANTIZATION_RANGE_FULL: | |
639 | return "Full"; | |
640 | } | |
641 | return "Invalid"; | |
642 | } | |
643 | ||
644 | static const char * | |
645 | hdmi_content_type_get_name(enum hdmi_content_type content_type) | |
646 | { | |
647 | switch (content_type) { | |
648 | case HDMI_CONTENT_TYPE_GRAPHICS: | |
649 | return "Graphics"; | |
650 | case HDMI_CONTENT_TYPE_PHOTO: | |
651 | return "Photo"; | |
652 | case HDMI_CONTENT_TYPE_CINEMA: | |
653 | return "Cinema"; | |
654 | case HDMI_CONTENT_TYPE_GAME: | |
655 | return "Game"; | |
656 | } | |
657 | return "Invalid"; | |
658 | } | |
659 | ||
660 | /** | |
661 | * hdmi_avi_infoframe_log() - log info of HDMI AVI infoframe | |
662 | * @level: logging level | |
663 | * @dev: device | |
664 | * @frame: HDMI AVI infoframe | |
665 | */ | |
666 | static void hdmi_avi_infoframe_log(const char *level, | |
667 | struct device *dev, | |
668 | struct hdmi_avi_infoframe *frame) | |
669 | { | |
670 | hdmi_infoframe_log_header(level, dev, | |
671 | (struct hdmi_any_infoframe *)frame); | |
672 | ||
673 | hdmi_log(" colorspace: %s\n", | |
674 | hdmi_colorspace_get_name(frame->colorspace)); | |
675 | hdmi_log(" scan mode: %s\n", | |
676 | hdmi_scan_mode_get_name(frame->scan_mode)); | |
677 | hdmi_log(" colorimetry: %s\n", | |
678 | hdmi_colorimetry_get_name(frame->colorimetry)); | |
679 | hdmi_log(" picture aspect: %s\n", | |
680 | hdmi_picture_aspect_get_name(frame->picture_aspect)); | |
681 | hdmi_log(" active aspect: %s\n", | |
682 | hdmi_active_aspect_get_name(frame->active_aspect)); | |
683 | hdmi_log(" itc: %s\n", frame->itc ? "IT Content" : "No Data"); | |
684 | hdmi_log(" extended colorimetry: %s\n", | |
685 | hdmi_extended_colorimetry_get_name(frame->extended_colorimetry)); | |
686 | hdmi_log(" quantization range: %s\n", | |
687 | hdmi_quantization_range_get_name(frame->quantization_range)); | |
688 | hdmi_log(" nups: %s\n", hdmi_nups_get_name(frame->nups)); | |
689 | hdmi_log(" video code: %u\n", frame->video_code); | |
690 | hdmi_log(" ycc quantization range: %s\n", | |
691 | hdmi_ycc_quantization_range_get_name(frame->ycc_quantization_range)); | |
692 | hdmi_log(" hdmi content type: %s\n", | |
693 | hdmi_content_type_get_name(frame->content_type)); | |
694 | hdmi_log(" pixel repeat: %u\n", frame->pixel_repeat); | |
695 | hdmi_log(" bar top %u, bottom %u, left %u, right %u\n", | |
696 | frame->top_bar, frame->bottom_bar, | |
697 | frame->left_bar, frame->right_bar); | |
698 | } | |
699 | ||
700 | static const char *hdmi_spd_sdi_get_name(enum hdmi_spd_sdi sdi) | |
701 | { | |
702 | if (sdi < 0 || sdi > 0xff) | |
703 | return "Invalid"; | |
704 | switch (sdi) { | |
705 | case HDMI_SPD_SDI_UNKNOWN: | |
706 | return "Unknown"; | |
707 | case HDMI_SPD_SDI_DSTB: | |
708 | return "Digital STB"; | |
709 | case HDMI_SPD_SDI_DVDP: | |
710 | return "DVD Player"; | |
711 | case HDMI_SPD_SDI_DVHS: | |
712 | return "D-VHS"; | |
713 | case HDMI_SPD_SDI_HDDVR: | |
714 | return "HDD Videorecorder"; | |
715 | case HDMI_SPD_SDI_DVC: | |
716 | return "DVC"; | |
717 | case HDMI_SPD_SDI_DSC: | |
718 | return "DSC"; | |
719 | case HDMI_SPD_SDI_VCD: | |
720 | return "Video CD"; | |
721 | case HDMI_SPD_SDI_GAME: | |
722 | return "Game"; | |
723 | case HDMI_SPD_SDI_PC: | |
724 | return "PC General"; | |
725 | case HDMI_SPD_SDI_BD: | |
726 | return "Blu-Ray Disc (BD)"; | |
727 | case HDMI_SPD_SDI_SACD: | |
728 | return "Super Audio CD"; | |
729 | case HDMI_SPD_SDI_HDDVD: | |
730 | return "HD DVD"; | |
731 | case HDMI_SPD_SDI_PMP: | |
732 | return "PMP"; | |
733 | } | |
734 | return "Reserved"; | |
735 | } | |
736 | ||
737 | /** | |
738 | * hdmi_spd_infoframe_log() - log info of HDMI SPD infoframe | |
739 | * @level: logging level | |
740 | * @dev: device | |
741 | * @frame: HDMI SPD infoframe | |
742 | */ | |
743 | static void hdmi_spd_infoframe_log(const char *level, | |
744 | struct device *dev, | |
745 | struct hdmi_spd_infoframe *frame) | |
746 | { | |
747 | u8 buf[17]; | |
748 | ||
749 | hdmi_infoframe_log_header(level, dev, | |
750 | (struct hdmi_any_infoframe *)frame); | |
751 | ||
752 | memset(buf, 0, sizeof(buf)); | |
753 | ||
754 | strncpy(buf, frame->vendor, 8); | |
755 | hdmi_log(" vendor: %s\n", buf); | |
756 | strncpy(buf, frame->product, 16); | |
757 | hdmi_log(" product: %s\n", buf); | |
758 | hdmi_log(" source device information: %s (0x%x)\n", | |
759 | hdmi_spd_sdi_get_name(frame->sdi), frame->sdi); | |
760 | } | |
761 | ||
762 | static const char * | |
763 | hdmi_audio_coding_type_get_name(enum hdmi_audio_coding_type coding_type) | |
764 | { | |
765 | switch (coding_type) { | |
766 | case HDMI_AUDIO_CODING_TYPE_STREAM: | |
767 | return "Refer to Stream Header"; | |
768 | case HDMI_AUDIO_CODING_TYPE_PCM: | |
769 | return "PCM"; | |
770 | case HDMI_AUDIO_CODING_TYPE_AC3: | |
771 | return "AC-3"; | |
772 | case HDMI_AUDIO_CODING_TYPE_MPEG1: | |
773 | return "MPEG1"; | |
774 | case HDMI_AUDIO_CODING_TYPE_MP3: | |
775 | return "MP3"; | |
776 | case HDMI_AUDIO_CODING_TYPE_MPEG2: | |
777 | return "MPEG2"; | |
778 | case HDMI_AUDIO_CODING_TYPE_AAC_LC: | |
779 | return "AAC"; | |
780 | case HDMI_AUDIO_CODING_TYPE_DTS: | |
781 | return "DTS"; | |
782 | case HDMI_AUDIO_CODING_TYPE_ATRAC: | |
783 | return "ATRAC"; | |
784 | case HDMI_AUDIO_CODING_TYPE_DSD: | |
785 | return "One Bit Audio"; | |
786 | case HDMI_AUDIO_CODING_TYPE_EAC3: | |
787 | return "Dolby Digital +"; | |
788 | case HDMI_AUDIO_CODING_TYPE_DTS_HD: | |
789 | return "DTS-HD"; | |
790 | case HDMI_AUDIO_CODING_TYPE_MLP: | |
791 | return "MAT (MLP)"; | |
792 | case HDMI_AUDIO_CODING_TYPE_DST: | |
793 | return "DST"; | |
794 | case HDMI_AUDIO_CODING_TYPE_WMA_PRO: | |
795 | return "WMA PRO"; | |
796 | case HDMI_AUDIO_CODING_TYPE_CXT: | |
797 | return "Refer to CXT"; | |
798 | } | |
799 | return "Invalid"; | |
800 | } | |
801 | ||
802 | static const char * | |
803 | hdmi_audio_sample_size_get_name(enum hdmi_audio_sample_size sample_size) | |
804 | { | |
805 | switch (sample_size) { | |
806 | case HDMI_AUDIO_SAMPLE_SIZE_STREAM: | |
807 | return "Refer to Stream Header"; | |
808 | case HDMI_AUDIO_SAMPLE_SIZE_16: | |
809 | return "16 bit"; | |
810 | case HDMI_AUDIO_SAMPLE_SIZE_20: | |
811 | return "20 bit"; | |
812 | case HDMI_AUDIO_SAMPLE_SIZE_24: | |
813 | return "24 bit"; | |
814 | } | |
815 | return "Invalid"; | |
816 | } | |
817 | ||
818 | static const char * | |
819 | hdmi_audio_sample_frequency_get_name(enum hdmi_audio_sample_frequency freq) | |
820 | { | |
821 | switch (freq) { | |
822 | case HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM: | |
823 | return "Refer to Stream Header"; | |
824 | case HDMI_AUDIO_SAMPLE_FREQUENCY_32000: | |
825 | return "32 kHz"; | |
826 | case HDMI_AUDIO_SAMPLE_FREQUENCY_44100: | |
827 | return "44.1 kHz (CD)"; | |
828 | case HDMI_AUDIO_SAMPLE_FREQUENCY_48000: | |
829 | return "48 kHz"; | |
830 | case HDMI_AUDIO_SAMPLE_FREQUENCY_88200: | |
831 | return "88.2 kHz"; | |
832 | case HDMI_AUDIO_SAMPLE_FREQUENCY_96000: | |
833 | return "96 kHz"; | |
834 | case HDMI_AUDIO_SAMPLE_FREQUENCY_176400: | |
835 | return "176.4 kHz"; | |
836 | case HDMI_AUDIO_SAMPLE_FREQUENCY_192000: | |
837 | return "192 kHz"; | |
838 | } | |
839 | return "Invalid"; | |
840 | } | |
841 | ||
842 | static const char * | |
843 | hdmi_audio_coding_type_ext_get_name(enum hdmi_audio_coding_type_ext ctx) | |
844 | { | |
845 | if (ctx < 0 || ctx > 0x1f) | |
846 | return "Invalid"; | |
847 | ||
848 | switch (ctx) { | |
dc189053 | 849 | case HDMI_AUDIO_CODING_TYPE_EXT_CT: |
2c676f37 MB |
850 | return "Refer to CT"; |
851 | case HDMI_AUDIO_CODING_TYPE_EXT_HE_AAC: | |
852 | return "HE AAC"; | |
853 | case HDMI_AUDIO_CODING_TYPE_EXT_HE_AAC_V2: | |
854 | return "HE AAC v2"; | |
855 | case HDMI_AUDIO_CODING_TYPE_EXT_MPEG_SURROUND: | |
856 | return "MPEG SURROUND"; | |
857 | case HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_HE_AAC: | |
858 | return "MPEG-4 HE AAC"; | |
859 | case HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_HE_AAC_V2: | |
860 | return "MPEG-4 HE AAC v2"; | |
861 | case HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_AAC_LC: | |
862 | return "MPEG-4 AAC LC"; | |
863 | case HDMI_AUDIO_CODING_TYPE_EXT_DRA: | |
864 | return "DRA"; | |
865 | case HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_HE_AAC_SURROUND: | |
866 | return "MPEG-4 HE AAC + MPEG Surround"; | |
867 | case HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_AAC_LC_SURROUND: | |
868 | return "MPEG-4 AAC LC + MPEG Surround"; | |
869 | } | |
870 | return "Reserved"; | |
871 | } | |
872 | ||
873 | /** | |
874 | * hdmi_audio_infoframe_log() - log info of HDMI AUDIO infoframe | |
875 | * @level: logging level | |
876 | * @dev: device | |
877 | * @frame: HDMI AUDIO infoframe | |
878 | */ | |
879 | static void hdmi_audio_infoframe_log(const char *level, | |
880 | struct device *dev, | |
881 | struct hdmi_audio_infoframe *frame) | |
882 | { | |
883 | hdmi_infoframe_log_header(level, dev, | |
884 | (struct hdmi_any_infoframe *)frame); | |
885 | ||
886 | if (frame->channels) | |
887 | hdmi_log(" channels: %u\n", frame->channels - 1); | |
888 | else | |
889 | hdmi_log(" channels: Refer to stream header\n"); | |
890 | hdmi_log(" coding type: %s\n", | |
891 | hdmi_audio_coding_type_get_name(frame->coding_type)); | |
892 | hdmi_log(" sample size: %s\n", | |
893 | hdmi_audio_sample_size_get_name(frame->sample_size)); | |
894 | hdmi_log(" sample frequency: %s\n", | |
895 | hdmi_audio_sample_frequency_get_name(frame->sample_frequency)); | |
896 | hdmi_log(" coding type ext: %s\n", | |
897 | hdmi_audio_coding_type_ext_get_name(frame->coding_type_ext)); | |
898 | hdmi_log(" channel allocation: 0x%x\n", | |
899 | frame->channel_allocation); | |
900 | hdmi_log(" level shift value: %u dB\n", | |
901 | frame->level_shift_value); | |
902 | hdmi_log(" downmix inhibit: %s\n", | |
903 | frame->downmix_inhibit ? "Yes" : "No"); | |
904 | } | |
905 | ||
906 | static const char * | |
907 | hdmi_3d_structure_get_name(enum hdmi_3d_structure s3d_struct) | |
908 | { | |
909 | if (s3d_struct < 0 || s3d_struct > 0xf) | |
910 | return "Invalid"; | |
911 | ||
912 | switch (s3d_struct) { | |
913 | case HDMI_3D_STRUCTURE_FRAME_PACKING: | |
914 | return "Frame Packing"; | |
915 | case HDMI_3D_STRUCTURE_FIELD_ALTERNATIVE: | |
916 | return "Field Alternative"; | |
917 | case HDMI_3D_STRUCTURE_LINE_ALTERNATIVE: | |
918 | return "Line Alternative"; | |
919 | case HDMI_3D_STRUCTURE_SIDE_BY_SIDE_FULL: | |
920 | return "Side-by-side (Full)"; | |
921 | case HDMI_3D_STRUCTURE_L_DEPTH: | |
922 | return "L + Depth"; | |
923 | case HDMI_3D_STRUCTURE_L_DEPTH_GFX_GFX_DEPTH: | |
924 | return "L + Depth + Graphics + Graphics-depth"; | |
925 | case HDMI_3D_STRUCTURE_TOP_AND_BOTTOM: | |
926 | return "Top-and-Bottom"; | |
927 | case HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF: | |
928 | return "Side-by-side (Half)"; | |
929 | default: | |
930 | break; | |
931 | } | |
932 | return "Reserved"; | |
933 | } | |
934 | ||
935 | /** | |
936 | * hdmi_vendor_infoframe_log() - log info of HDMI VENDOR infoframe | |
937 | * @level: logging level | |
938 | * @dev: device | |
939 | * @frame: HDMI VENDOR infoframe | |
940 | */ | |
941 | static void | |
942 | hdmi_vendor_any_infoframe_log(const char *level, | |
943 | struct device *dev, | |
944 | union hdmi_vendor_any_infoframe *frame) | |
945 | { | |
946 | struct hdmi_vendor_infoframe *hvf = &frame->hdmi; | |
947 | ||
948 | hdmi_infoframe_log_header(level, dev, | |
949 | (struct hdmi_any_infoframe *)frame); | |
950 | ||
951 | if (frame->any.oui != HDMI_IEEE_OUI) { | |
952 | hdmi_log(" not a HDMI vendor infoframe\n"); | |
953 | return; | |
954 | } | |
955 | if (hvf->vic == 0 && hvf->s3d_struct == HDMI_3D_STRUCTURE_INVALID) { | |
956 | hdmi_log(" empty frame\n"); | |
957 | return; | |
958 | } | |
959 | ||
960 | if (hvf->vic) | |
961 | hdmi_log(" HDMI VIC: %u\n", hvf->vic); | |
962 | if (hvf->s3d_struct != HDMI_3D_STRUCTURE_INVALID) { | |
963 | hdmi_log(" 3D structure: %s\n", | |
964 | hdmi_3d_structure_get_name(hvf->s3d_struct)); | |
965 | if (hvf->s3d_struct >= HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF) | |
966 | hdmi_log(" 3D extension data: %d\n", | |
967 | hvf->s3d_ext_data); | |
968 | } | |
969 | } | |
970 | ||
971 | /** | |
972 | * hdmi_infoframe_log() - log info of HDMI infoframe | |
973 | * @level: logging level | |
974 | * @dev: device | |
975 | * @frame: HDMI infoframe | |
976 | */ | |
977 | void hdmi_infoframe_log(const char *level, | |
978 | struct device *dev, | |
979 | union hdmi_infoframe *frame) | |
980 | { | |
981 | switch (frame->any.type) { | |
982 | case HDMI_INFOFRAME_TYPE_AVI: | |
983 | hdmi_avi_infoframe_log(level, dev, &frame->avi); | |
984 | break; | |
985 | case HDMI_INFOFRAME_TYPE_SPD: | |
986 | hdmi_spd_infoframe_log(level, dev, &frame->spd); | |
987 | break; | |
988 | case HDMI_INFOFRAME_TYPE_AUDIO: | |
989 | hdmi_audio_infoframe_log(level, dev, &frame->audio); | |
990 | break; | |
991 | case HDMI_INFOFRAME_TYPE_VENDOR: | |
992 | hdmi_vendor_any_infoframe_log(level, dev, &frame->vendor); | |
993 | break; | |
994 | } | |
995 | } | |
996 | EXPORT_SYMBOL(hdmi_infoframe_log); | |
997 | ||
998 | /** | |
999 | * hdmi_avi_infoframe_unpack() - unpack binary buffer to a HDMI AVI infoframe | |
1000 | * @buffer: source buffer | |
1001 | * @frame: HDMI AVI infoframe | |
1002 | * | |
1003 | * Unpacks the information contained in binary @buffer into a structured | |
1004 | * @frame of the HDMI Auxiliary Video (AVI) information frame. | |
1005 | * Also verifies the checksum as required by section 5.3.5 of the HDMI 1.4 | |
1006 | * specification. | |
1007 | * | |
1008 | * Returns 0 on success or a negative error code on failure. | |
1009 | */ | |
1010 | static int hdmi_avi_infoframe_unpack(struct hdmi_avi_infoframe *frame, | |
1011 | void *buffer) | |
1012 | { | |
1013 | u8 *ptr = buffer; | |
1014 | int ret; | |
1015 | ||
1016 | if (ptr[0] != HDMI_INFOFRAME_TYPE_AVI || | |
1017 | ptr[1] != 2 || | |
1018 | ptr[2] != HDMI_AVI_INFOFRAME_SIZE) | |
1019 | return -EINVAL; | |
1020 | ||
1021 | if (hdmi_infoframe_checksum(buffer, HDMI_INFOFRAME_SIZE(AVI)) != 0) | |
1022 | return -EINVAL; | |
1023 | ||
1024 | ret = hdmi_avi_infoframe_init(frame); | |
1025 | if (ret) | |
1026 | return ret; | |
1027 | ||
1028 | ptr += HDMI_INFOFRAME_HEADER_SIZE; | |
1029 | ||
1030 | frame->colorspace = (ptr[0] >> 5) & 0x3; | |
1031 | if (ptr[0] & 0x10) | |
1032 | frame->active_aspect = ptr[1] & 0xf; | |
1033 | if (ptr[0] & 0x8) { | |
1034 | frame->top_bar = (ptr[5] << 8) + ptr[6]; | |
1035 | frame->bottom_bar = (ptr[7] << 8) + ptr[8]; | |
1036 | } | |
1037 | if (ptr[0] & 0x4) { | |
1038 | frame->left_bar = (ptr[9] << 8) + ptr[10]; | |
1039 | frame->right_bar = (ptr[11] << 8) + ptr[12]; | |
1040 | } | |
1041 | frame->scan_mode = ptr[0] & 0x3; | |
1042 | ||
1043 | frame->colorimetry = (ptr[1] >> 6) & 0x3; | |
1044 | frame->picture_aspect = (ptr[1] >> 4) & 0x3; | |
1045 | frame->active_aspect = ptr[1] & 0xf; | |
1046 | ||
1047 | frame->itc = ptr[2] & 0x80 ? true : false; | |
1048 | frame->extended_colorimetry = (ptr[2] >> 4) & 0x7; | |
1049 | frame->quantization_range = (ptr[2] >> 2) & 0x3; | |
1050 | frame->nups = ptr[2] & 0x3; | |
1051 | ||
1052 | frame->video_code = ptr[3] & 0x7f; | |
1053 | frame->ycc_quantization_range = (ptr[4] >> 6) & 0x3; | |
1054 | frame->content_type = (ptr[4] >> 4) & 0x3; | |
1055 | ||
1056 | frame->pixel_repeat = ptr[4] & 0xf; | |
1057 | ||
1058 | return 0; | |
1059 | } | |
1060 | ||
1061 | /** | |
1062 | * hdmi_spd_infoframe_unpack() - unpack binary buffer to a HDMI SPD infoframe | |
1063 | * @buffer: source buffer | |
1064 | * @frame: HDMI SPD infoframe | |
1065 | * | |
1066 | * Unpacks the information contained in binary @buffer into a structured | |
1067 | * @frame of the HDMI Source Product Description (SPD) information frame. | |
1068 | * Also verifies the checksum as required by section 5.3.5 of the HDMI 1.4 | |
1069 | * specification. | |
1070 | * | |
1071 | * Returns 0 on success or a negative error code on failure. | |
1072 | */ | |
1073 | static int hdmi_spd_infoframe_unpack(struct hdmi_spd_infoframe *frame, | |
1074 | void *buffer) | |
1075 | { | |
1076 | u8 *ptr = buffer; | |
1077 | int ret; | |
1078 | ||
1079 | if (ptr[0] != HDMI_INFOFRAME_TYPE_SPD || | |
1080 | ptr[1] != 1 || | |
1081 | ptr[2] != HDMI_SPD_INFOFRAME_SIZE) { | |
1082 | return -EINVAL; | |
1083 | } | |
1084 | ||
1085 | if (hdmi_infoframe_checksum(buffer, HDMI_INFOFRAME_SIZE(SPD)) != 0) | |
1086 | return -EINVAL; | |
1087 | ||
1088 | ptr += HDMI_INFOFRAME_HEADER_SIZE; | |
1089 | ||
1090 | ret = hdmi_spd_infoframe_init(frame, ptr, ptr + 8); | |
1091 | if (ret) | |
1092 | return ret; | |
1093 | ||
1094 | frame->sdi = ptr[24]; | |
1095 | ||
1096 | return 0; | |
1097 | } | |
1098 | ||
1099 | /** | |
1100 | * hdmi_audio_infoframe_unpack() - unpack binary buffer to a HDMI AUDIO infoframe | |
1101 | * @buffer: source buffer | |
1102 | * @frame: HDMI Audio infoframe | |
1103 | * | |
1104 | * Unpacks the information contained in binary @buffer into a structured | |
1105 | * @frame of the HDMI Audio information frame. | |
1106 | * Also verifies the checksum as required by section 5.3.5 of the HDMI 1.4 | |
1107 | * specification. | |
1108 | * | |
1109 | * Returns 0 on success or a negative error code on failure. | |
1110 | */ | |
1111 | static int hdmi_audio_infoframe_unpack(struct hdmi_audio_infoframe *frame, | |
1112 | void *buffer) | |
1113 | { | |
1114 | u8 *ptr = buffer; | |
1115 | int ret; | |
1116 | ||
1117 | if (ptr[0] != HDMI_INFOFRAME_TYPE_AUDIO || | |
1118 | ptr[1] != 1 || | |
1119 | ptr[2] != HDMI_AUDIO_INFOFRAME_SIZE) { | |
1120 | return -EINVAL; | |
1121 | } | |
1122 | ||
1123 | if (hdmi_infoframe_checksum(buffer, HDMI_INFOFRAME_SIZE(AUDIO)) != 0) | |
1124 | return -EINVAL; | |
1125 | ||
1126 | ret = hdmi_audio_infoframe_init(frame); | |
1127 | if (ret) | |
1128 | return ret; | |
1129 | ||
1130 | ptr += HDMI_INFOFRAME_HEADER_SIZE; | |
1131 | ||
1132 | frame->channels = ptr[0] & 0x7; | |
1133 | frame->coding_type = (ptr[0] >> 4) & 0xf; | |
1134 | frame->sample_size = ptr[1] & 0x3; | |
1135 | frame->sample_frequency = (ptr[1] >> 2) & 0x7; | |
1136 | frame->coding_type_ext = ptr[2] & 0x1f; | |
1137 | frame->channel_allocation = ptr[3]; | |
1138 | frame->level_shift_value = (ptr[4] >> 3) & 0xf; | |
1139 | frame->downmix_inhibit = ptr[4] & 0x80 ? true : false; | |
1140 | ||
1141 | return 0; | |
1142 | } | |
1143 | ||
1144 | /** | |
1145 | * hdmi_vendor_infoframe_unpack() - unpack binary buffer to a HDMI vendor infoframe | |
1146 | * @buffer: source buffer | |
1147 | * @frame: HDMI Vendor infoframe | |
1148 | * | |
1149 | * Unpacks the information contained in binary @buffer into a structured | |
1150 | * @frame of the HDMI Vendor information frame. | |
1151 | * Also verifies the checksum as required by section 5.3.5 of the HDMI 1.4 | |
1152 | * specification. | |
1153 | * | |
1154 | * Returns 0 on success or a negative error code on failure. | |
1155 | */ | |
1156 | static int | |
1157 | hdmi_vendor_any_infoframe_unpack(union hdmi_vendor_any_infoframe *frame, | |
1158 | void *buffer) | |
1159 | { | |
1160 | u8 *ptr = buffer; | |
1161 | size_t length; | |
1162 | int ret; | |
1163 | u8 hdmi_video_format; | |
1164 | struct hdmi_vendor_infoframe *hvf = &frame->hdmi; | |
1165 | ||
1166 | if (ptr[0] != HDMI_INFOFRAME_TYPE_VENDOR || | |
1167 | ptr[1] != 1 || | |
1168 | (ptr[2] != 5 && ptr[2] != 6)) | |
1169 | return -EINVAL; | |
1170 | ||
1171 | length = ptr[2]; | |
1172 | ||
1173 | if (hdmi_infoframe_checksum(buffer, | |
1174 | HDMI_INFOFRAME_HEADER_SIZE + length) != 0) | |
1175 | return -EINVAL; | |
1176 | ||
1177 | ptr += HDMI_INFOFRAME_HEADER_SIZE; | |
1178 | ||
1179 | /* HDMI OUI */ | |
1180 | if ((ptr[0] != 0x03) || | |
1181 | (ptr[1] != 0x0c) || | |
1182 | (ptr[2] != 0x00)) | |
1183 | return -EINVAL; | |
1184 | ||
1185 | hdmi_video_format = ptr[3] >> 5; | |
1186 | ||
1187 | if (hdmi_video_format > 0x2) | |
1188 | return -EINVAL; | |
1189 | ||
1190 | ret = hdmi_vendor_infoframe_init(hvf); | |
1191 | if (ret) | |
1192 | return ret; | |
1193 | ||
1194 | hvf->length = length; | |
1195 | ||
1196 | if (hdmi_video_format == 0x1) { | |
1197 | hvf->vic = ptr[4]; | |
1198 | } else if (hdmi_video_format == 0x2) { | |
1199 | hvf->s3d_struct = ptr[4] >> 4; | |
1200 | if (hvf->s3d_struct >= HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF) { | |
1201 | if (length == 6) | |
1202 | hvf->s3d_ext_data = ptr[5] >> 4; | |
1203 | else | |
1204 | return -EINVAL; | |
1205 | } | |
1206 | } | |
1207 | ||
1208 | return 0; | |
1209 | } | |
1210 | ||
1211 | /** | |
1212 | * hdmi_infoframe_unpack() - unpack binary buffer to a HDMI infoframe | |
1213 | * @buffer: source buffer | |
1214 | * @frame: HDMI infoframe | |
1215 | * | |
1216 | * Unpacks the information contained in binary buffer @buffer into a structured | |
1217 | * @frame of a HDMI infoframe. | |
1218 | * Also verifies the checksum as required by section 5.3.5 of the HDMI 1.4 | |
1219 | * specification. | |
1220 | * | |
1221 | * Returns 0 on success or a negative error code on failure. | |
1222 | */ | |
1223 | int hdmi_infoframe_unpack(union hdmi_infoframe *frame, void *buffer) | |
1224 | { | |
1225 | int ret; | |
1226 | u8 *ptr = buffer; | |
1227 | ||
1228 | switch (ptr[0]) { | |
1229 | case HDMI_INFOFRAME_TYPE_AVI: | |
1230 | ret = hdmi_avi_infoframe_unpack(&frame->avi, buffer); | |
1231 | break; | |
1232 | case HDMI_INFOFRAME_TYPE_SPD: | |
1233 | ret = hdmi_spd_infoframe_unpack(&frame->spd, buffer); | |
1234 | break; | |
1235 | case HDMI_INFOFRAME_TYPE_AUDIO: | |
1236 | ret = hdmi_audio_infoframe_unpack(&frame->audio, buffer); | |
1237 | break; | |
1238 | case HDMI_INFOFRAME_TYPE_VENDOR: | |
1239 | ret = hdmi_vendor_any_infoframe_unpack(&frame->vendor, buffer); | |
1240 | break; | |
1241 | default: | |
1242 | ret = -EINVAL; | |
1243 | break; | |
1244 | } | |
1245 | ||
1246 | return ret; | |
1247 | } | |
1248 | EXPORT_SYMBOL(hdmi_infoframe_unpack); |