Commit | Line | Data |
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7f4a9f43 WF |
1 | /* |
2 | * Generic routines and proc interface for ELD(EDID Like Data) information | |
3 | * | |
4 | * Copyright(c) 2008 Intel Corporation. | |
89250f84 | 5 | * Copyright (c) 2013 Anssi Hannula <anssi.hannula@iki.fi> |
7f4a9f43 WF |
6 | * |
7 | * Authors: | |
8 | * Wu Fengguang <wfg@linux.intel.com> | |
9 | * | |
10 | * This driver is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or | |
13 | * (at your option) any later version. | |
14 | * | |
15 | * This driver is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
23 | */ | |
24 | ||
25 | #include <linux/init.h> | |
5a0e3ad6 | 26 | #include <linux/slab.h> |
7f4a9f43 WF |
27 | #include <sound/core.h> |
28 | #include <asm/unaligned.h> | |
29 | #include "hda_codec.h" | |
30 | #include "hda_local.h" | |
31 | ||
32 | enum eld_versions { | |
33 | ELD_VER_CEA_861D = 2, | |
34 | ELD_VER_PARTIAL = 31, | |
35 | }; | |
36 | ||
7f4a9f43 WF |
37 | enum cea_edid_versions { |
38 | CEA_EDID_VER_NONE = 0, | |
39 | CEA_EDID_VER_CEA861 = 1, | |
40 | CEA_EDID_VER_CEA861A = 2, | |
41 | CEA_EDID_VER_CEA861BCD = 3, | |
42 | CEA_EDID_VER_RESERVED = 4, | |
43 | }; | |
44 | ||
7f4a9f43 WF |
45 | static char *cea_speaker_allocation_names[] = { |
46 | /* 0 */ "FL/FR", | |
47 | /* 1 */ "LFE", | |
48 | /* 2 */ "FC", | |
49 | /* 3 */ "RL/RR", | |
50 | /* 4 */ "RC", | |
51 | /* 5 */ "FLC/FRC", | |
52 | /* 6 */ "RLC/RRC", | |
53 | /* 7 */ "FLW/FRW", | |
54 | /* 8 */ "FLH/FRH", | |
55 | /* 9 */ "TC", | |
56 | /* 10 */ "FCH", | |
57 | }; | |
58 | ||
59 | static char *eld_connection_type_names[4] = { | |
60 | "HDMI", | |
9415e1c4 | 61 | "DisplayPort", |
7f4a9f43 WF |
62 | "2-reserved", |
63 | "3-reserved" | |
64 | }; | |
65 | ||
66 | enum cea_audio_coding_types { | |
67 | AUDIO_CODING_TYPE_REF_STREAM_HEADER = 0, | |
68 | AUDIO_CODING_TYPE_LPCM = 1, | |
69 | AUDIO_CODING_TYPE_AC3 = 2, | |
70 | AUDIO_CODING_TYPE_MPEG1 = 3, | |
71 | AUDIO_CODING_TYPE_MP3 = 4, | |
72 | AUDIO_CODING_TYPE_MPEG2 = 5, | |
73 | AUDIO_CODING_TYPE_AACLC = 6, | |
74 | AUDIO_CODING_TYPE_DTS = 7, | |
75 | AUDIO_CODING_TYPE_ATRAC = 8, | |
76 | AUDIO_CODING_TYPE_SACD = 9, | |
77 | AUDIO_CODING_TYPE_EAC3 = 10, | |
78 | AUDIO_CODING_TYPE_DTS_HD = 11, | |
79 | AUDIO_CODING_TYPE_MLP = 12, | |
80 | AUDIO_CODING_TYPE_DST = 13, | |
81 | AUDIO_CODING_TYPE_WMAPRO = 14, | |
82 | AUDIO_CODING_TYPE_REF_CXT = 15, | |
83 | /* also include valid xtypes below */ | |
84 | AUDIO_CODING_TYPE_HE_AAC = 15, | |
85 | AUDIO_CODING_TYPE_HE_AAC2 = 16, | |
86 | AUDIO_CODING_TYPE_MPEG_SURROUND = 17, | |
87 | }; | |
88 | ||
89 | enum cea_audio_coding_xtypes { | |
90 | AUDIO_CODING_XTYPE_HE_REF_CT = 0, | |
91 | AUDIO_CODING_XTYPE_HE_AAC = 1, | |
92 | AUDIO_CODING_XTYPE_HE_AAC2 = 2, | |
93 | AUDIO_CODING_XTYPE_MPEG_SURROUND = 3, | |
94 | AUDIO_CODING_XTYPE_FIRST_RESERVED = 4, | |
95 | }; | |
96 | ||
97 | static char *cea_audio_coding_type_names[] = { | |
98 | /* 0 */ "undefined", | |
99 | /* 1 */ "LPCM", | |
100 | /* 2 */ "AC-3", | |
101 | /* 3 */ "MPEG1", | |
102 | /* 4 */ "MP3", | |
103 | /* 5 */ "MPEG2", | |
104 | /* 6 */ "AAC-LC", | |
105 | /* 7 */ "DTS", | |
106 | /* 8 */ "ATRAC", | |
06f69d17 | 107 | /* 9 */ "DSD (One Bit Audio)", |
7f4a9f43 WF |
108 | /* 10 */ "E-AC-3/DD+ (Dolby Digital Plus)", |
109 | /* 11 */ "DTS-HD", | |
110 | /* 12 */ "MLP (Dolby TrueHD)", | |
111 | /* 13 */ "DST", | |
112 | /* 14 */ "WMAPro", | |
113 | /* 15 */ "HE-AAC", | |
114 | /* 16 */ "HE-AACv2", | |
115 | /* 17 */ "MPEG Surround", | |
116 | }; | |
117 | ||
118 | /* | |
119 | * The following two lists are shared between | |
120 | * - HDMI audio InfoFrame (source to sink) | |
4e19c58f | 121 | * - CEA E-EDID Extension (sink to source) |
7f4a9f43 WF |
122 | */ |
123 | ||
124 | /* | |
125 | * SS1:SS0 index => sample size | |
126 | */ | |
127 | static int cea_sample_sizes[4] = { | |
128 | 0, /* 0: Refer to Stream Header */ | |
129 | AC_SUPPCM_BITS_16, /* 1: 16 bits */ | |
130 | AC_SUPPCM_BITS_20, /* 2: 20 bits */ | |
131 | AC_SUPPCM_BITS_24, /* 3: 24 bits */ | |
132 | }; | |
133 | ||
134 | /* | |
135 | * SF2:SF1:SF0 index => sampling frequency | |
136 | */ | |
137 | static int cea_sampling_frequencies[8] = { | |
138 | 0, /* 0: Refer to Stream Header */ | |
139 | SNDRV_PCM_RATE_32000, /* 1: 32000Hz */ | |
140 | SNDRV_PCM_RATE_44100, /* 2: 44100Hz */ | |
141 | SNDRV_PCM_RATE_48000, /* 3: 48000Hz */ | |
142 | SNDRV_PCM_RATE_88200, /* 4: 88200Hz */ | |
143 | SNDRV_PCM_RATE_96000, /* 5: 96000Hz */ | |
144 | SNDRV_PCM_RATE_176400, /* 6: 176400Hz */ | |
145 | SNDRV_PCM_RATE_192000, /* 7: 192000Hz */ | |
146 | }; | |
147 | ||
b6acf013 | 148 | static unsigned int hdmi_get_eld_data(struct hda_codec *codec, hda_nid_t nid, |
7f4a9f43 WF |
149 | int byte_index) |
150 | { | |
151 | unsigned int val; | |
152 | ||
153 | val = snd_hda_codec_read(codec, nid, 0, | |
154 | AC_VERB_GET_HDMI_ELDD, byte_index); | |
7f4a9f43 | 155 | #ifdef BE_PARANOID |
03284c8f | 156 | printk(KERN_INFO "HDMI: ELD data byte %d: 0x%x\n", byte_index, val); |
7f4a9f43 | 157 | #endif |
b6acf013 | 158 | return val; |
7f4a9f43 WF |
159 | } |
160 | ||
161 | #define GRAB_BITS(buf, byte, lowbit, bits) \ | |
162 | ({ \ | |
163 | BUILD_BUG_ON(lowbit > 7); \ | |
164 | BUILD_BUG_ON(bits > 8); \ | |
165 | BUILD_BUG_ON(bits <= 0); \ | |
166 | \ | |
167 | (buf[byte] >> (lowbit)) & ((1 << (bits)) - 1); \ | |
168 | }) | |
169 | ||
170 | static void hdmi_update_short_audio_desc(struct cea_sad *a, | |
171 | const unsigned char *buf) | |
172 | { | |
173 | int i; | |
174 | int val; | |
175 | ||
176 | val = GRAB_BITS(buf, 1, 0, 7); | |
177 | a->rates = 0; | |
178 | for (i = 0; i < 7; i++) | |
179 | if (val & (1 << i)) | |
180 | a->rates |= cea_sampling_frequencies[i + 1]; | |
181 | ||
182 | a->channels = GRAB_BITS(buf, 0, 0, 3); | |
183 | a->channels++; | |
184 | ||
0bbaee3a AH |
185 | a->sample_bits = 0; |
186 | a->max_bitrate = 0; | |
187 | ||
7f4a9f43 WF |
188 | a->format = GRAB_BITS(buf, 0, 3, 4); |
189 | switch (a->format) { | |
190 | case AUDIO_CODING_TYPE_REF_STREAM_HEADER: | |
191 | snd_printd(KERN_INFO | |
03284c8f | 192 | "HDMI: audio coding type 0 not expected\n"); |
7f4a9f43 WF |
193 | break; |
194 | ||
195 | case AUDIO_CODING_TYPE_LPCM: | |
196 | val = GRAB_BITS(buf, 2, 0, 3); | |
7f4a9f43 WF |
197 | for (i = 0; i < 3; i++) |
198 | if (val & (1 << i)) | |
199 | a->sample_bits |= cea_sample_sizes[i + 1]; | |
200 | break; | |
201 | ||
202 | case AUDIO_CODING_TYPE_AC3: | |
203 | case AUDIO_CODING_TYPE_MPEG1: | |
204 | case AUDIO_CODING_TYPE_MP3: | |
205 | case AUDIO_CODING_TYPE_MPEG2: | |
206 | case AUDIO_CODING_TYPE_AACLC: | |
207 | case AUDIO_CODING_TYPE_DTS: | |
208 | case AUDIO_CODING_TYPE_ATRAC: | |
209 | a->max_bitrate = GRAB_BITS(buf, 2, 0, 8); | |
210 | a->max_bitrate *= 8000; | |
211 | break; | |
212 | ||
213 | case AUDIO_CODING_TYPE_SACD: | |
214 | break; | |
215 | ||
216 | case AUDIO_CODING_TYPE_EAC3: | |
217 | break; | |
218 | ||
219 | case AUDIO_CODING_TYPE_DTS_HD: | |
220 | break; | |
221 | ||
222 | case AUDIO_CODING_TYPE_MLP: | |
223 | break; | |
224 | ||
225 | case AUDIO_CODING_TYPE_DST: | |
226 | break; | |
227 | ||
228 | case AUDIO_CODING_TYPE_WMAPRO: | |
229 | a->profile = GRAB_BITS(buf, 2, 0, 3); | |
230 | break; | |
231 | ||
232 | case AUDIO_CODING_TYPE_REF_CXT: | |
233 | a->format = GRAB_BITS(buf, 2, 3, 5); | |
234 | if (a->format == AUDIO_CODING_XTYPE_HE_REF_CT || | |
235 | a->format >= AUDIO_CODING_XTYPE_FIRST_RESERVED) { | |
236 | snd_printd(KERN_INFO | |
03284c8f | 237 | "HDMI: audio coding xtype %d not expected\n", |
7f4a9f43 WF |
238 | a->format); |
239 | a->format = 0; | |
240 | } else | |
241 | a->format += AUDIO_CODING_TYPE_HE_AAC - | |
242 | AUDIO_CODING_XTYPE_HE_AAC; | |
243 | break; | |
244 | } | |
245 | } | |
246 | ||
247 | /* | |
248 | * Be careful, ELD buf could be totally rubbish! | |
249 | */ | |
1613d6b4 DH |
250 | int snd_hdmi_parse_eld(struct parsed_hdmi_eld *e, |
251 | const unsigned char *buf, int size) | |
7f4a9f43 WF |
252 | { |
253 | int mnl; | |
254 | int i; | |
255 | ||
256 | e->eld_ver = GRAB_BITS(buf, 0, 3, 5); | |
257 | if (e->eld_ver != ELD_VER_CEA_861D && | |
258 | e->eld_ver != ELD_VER_PARTIAL) { | |
03284c8f WF |
259 | snd_printd(KERN_INFO "HDMI: Unknown ELD version %d\n", |
260 | e->eld_ver); | |
7f4a9f43 WF |
261 | goto out_fail; |
262 | } | |
263 | ||
7f4a9f43 WF |
264 | e->baseline_len = GRAB_BITS(buf, 2, 0, 8); |
265 | mnl = GRAB_BITS(buf, 4, 0, 5); | |
266 | e->cea_edid_ver = GRAB_BITS(buf, 4, 5, 3); | |
267 | ||
268 | e->support_hdcp = GRAB_BITS(buf, 5, 0, 1); | |
269 | e->support_ai = GRAB_BITS(buf, 5, 1, 1); | |
270 | e->conn_type = GRAB_BITS(buf, 5, 2, 2); | |
271 | e->sad_count = GRAB_BITS(buf, 5, 4, 4); | |
272 | ||
273 | e->aud_synch_delay = GRAB_BITS(buf, 6, 0, 8) * 2; | |
274 | e->spk_alloc = GRAB_BITS(buf, 7, 0, 7); | |
275 | ||
276 | e->port_id = get_unaligned_le64(buf + 8); | |
277 | ||
278 | /* not specified, but the spec's tendency is little endian */ | |
279 | e->manufacture_id = get_unaligned_le16(buf + 16); | |
280 | e->product_id = get_unaligned_le16(buf + 18); | |
281 | ||
282 | if (mnl > ELD_MAX_MNL) { | |
03284c8f | 283 | snd_printd(KERN_INFO "HDMI: MNL is reserved value %d\n", mnl); |
7f4a9f43 WF |
284 | goto out_fail; |
285 | } else if (ELD_FIXED_BYTES + mnl > size) { | |
03284c8f | 286 | snd_printd(KERN_INFO "HDMI: out of range MNL %d\n", mnl); |
7f4a9f43 WF |
287 | goto out_fail; |
288 | } else | |
f5b2d0ef | 289 | strlcpy(e->monitor_name, buf + ELD_FIXED_BYTES, mnl + 1); |
7f4a9f43 WF |
290 | |
291 | for (i = 0; i < e->sad_count; i++) { | |
292 | if (ELD_FIXED_BYTES + mnl + 3 * (i + 1) > size) { | |
03284c8f | 293 | snd_printd(KERN_INFO "HDMI: out of range SAD %d\n", i); |
7f4a9f43 WF |
294 | goto out_fail; |
295 | } | |
296 | hdmi_update_short_audio_desc(e->sad + i, | |
297 | buf + ELD_FIXED_BYTES + mnl + 3 * i); | |
298 | } | |
299 | ||
2d1b439b WF |
300 | /* |
301 | * HDMI sink's ELD info cannot always be retrieved for now, e.g. | |
302 | * in console or for audio devices. Assume the highest speakers | |
303 | * configuration, to _not_ prohibit multi-channel audio playback. | |
304 | */ | |
305 | if (!e->spk_alloc) | |
306 | e->spk_alloc = 0xffff; | |
307 | ||
7f4a9f43 WF |
308 | return 0; |
309 | ||
310 | out_fail: | |
7f4a9f43 WF |
311 | return -EINVAL; |
312 | } | |
313 | ||
7f4a9f43 WF |
314 | int snd_hdmi_get_eld_size(struct hda_codec *codec, hda_nid_t nid) |
315 | { | |
316 | return snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_HDMI_DIP_SIZE, | |
317 | AC_DIPSIZE_ELD_BUF); | |
318 | } | |
319 | ||
1613d6b4 DH |
320 | int snd_hdmi_get_eld(struct hda_codec *codec, hda_nid_t nid, |
321 | unsigned char *buf, int *eld_size) | |
7f4a9f43 WF |
322 | { |
323 | int i; | |
2ef5692e | 324 | int ret = 0; |
7f4a9f43 | 325 | int size; |
7f4a9f43 | 326 | |
14bc52b8 PLB |
327 | /* |
328 | * ELD size is initialized to zero in caller function. If no errors and | |
1613d6b4 | 329 | * ELD is valid, actual eld_size is assigned. |
14bc52b8 PLB |
330 | */ |
331 | ||
7f4a9f43 WF |
332 | size = snd_hdmi_get_eld_size(codec, nid); |
333 | if (size == 0) { | |
334 | /* wfg: workaround for ASUS P5E-VM HDMI board */ | |
03284c8f | 335 | snd_printd(KERN_INFO "HDMI: ELD buf size is 0, force 128\n"); |
7f4a9f43 WF |
336 | size = 128; |
337 | } | |
14bc52b8 | 338 | if (size < ELD_FIXED_BYTES || size > ELD_MAX_SIZE) { |
03284c8f | 339 | snd_printd(KERN_INFO "HDMI: invalid ELD buf size %d\n", size); |
7f4a9f43 WF |
340 | return -ERANGE; |
341 | } | |
342 | ||
14bc52b8 | 343 | /* set ELD buffer */ |
b6acf013 TI |
344 | for (i = 0; i < size; i++) { |
345 | unsigned int val = hdmi_get_eld_data(codec, nid, i); | |
a370fc62 WF |
346 | /* |
347 | * Graphics driver might be writing to ELD buffer right now. | |
348 | * Just abort. The caller will repoll after a while. | |
349 | */ | |
b6acf013 | 350 | if (!(val & AC_ELDD_ELD_VALID)) { |
b6acf013 TI |
351 | snd_printd(KERN_INFO |
352 | "HDMI: invalid ELD data byte %d\n", i); | |
a370fc62 WF |
353 | ret = -EINVAL; |
354 | goto error; | |
355 | } | |
356 | val &= AC_ELDD_ELD_DATA; | |
357 | /* | |
358 | * The first byte cannot be zero. This can happen on some DVI | |
359 | * connections. Some Intel chips may also need some 250ms delay | |
360 | * to return non-zero ELD data, even when the graphics driver | |
361 | * correctly writes ELD content before setting ELD_valid bit. | |
362 | */ | |
363 | if (!val && !i) { | |
364 | snd_printdd(KERN_INFO "HDMI: 0 ELD data\n"); | |
365 | ret = -EINVAL; | |
366 | goto error; | |
367 | } | |
b6acf013 TI |
368 | buf[i] = val; |
369 | } | |
7f4a9f43 | 370 | |
1613d6b4 | 371 | *eld_size = size; |
b6acf013 | 372 | error: |
7f4a9f43 WF |
373 | return ret; |
374 | } | |
375 | ||
af65cbf2 PLB |
376 | /** |
377 | * SNDRV_PCM_RATE_* and AC_PAR_PCM values don't match, print correct rates with | |
378 | * hdmi-specific routine. | |
379 | */ | |
380 | static void hdmi_print_pcm_rates(int pcm, char *buf, int buflen) | |
381 | { | |
382 | static unsigned int alsa_rates[] = { | |
25dc16f6 AH |
383 | 5512, 8000, 11025, 16000, 22050, 32000, 44100, 48000, 64000, |
384 | 88200, 96000, 176400, 192000, 384000 | |
af65cbf2 PLB |
385 | }; |
386 | int i, j; | |
387 | ||
388 | for (i = 0, j = 0; i < ARRAY_SIZE(alsa_rates); i++) | |
389 | if (pcm & (1 << i)) | |
390 | j += snprintf(buf + j, buflen - j, " %d", | |
391 | alsa_rates[i]); | |
392 | ||
393 | buf[j] = '\0'; /* necessary when j == 0 */ | |
394 | } | |
395 | ||
f71ff0d7 TI |
396 | #define SND_PRINT_RATES_ADVISED_BUFSIZE 80 |
397 | ||
7f4a9f43 WF |
398 | static void hdmi_show_short_audio_desc(struct cea_sad *a) |
399 | { | |
400 | char buf[SND_PRINT_RATES_ADVISED_BUFSIZE]; | |
ae8cb4ca | 401 | char buf2[8 + SND_PRINT_BITS_ADVISED_BUFSIZE] = ", bits ="; |
7f4a9f43 | 402 | |
ae8cb4ca WF |
403 | if (!a->format) |
404 | return; | |
7f4a9f43 | 405 | |
af65cbf2 | 406 | hdmi_print_pcm_rates(a->rates, buf, sizeof(buf)); |
7f4a9f43 WF |
407 | |
408 | if (a->format == AUDIO_CODING_TYPE_LPCM) | |
d757534e | 409 | snd_print_pcm_bits(a->sample_bits, buf2 + 8, sizeof(buf2) - 8); |
ae8cb4ca WF |
410 | else if (a->max_bitrate) |
411 | snprintf(buf2, sizeof(buf2), | |
412 | ", max bitrate = %d", a->max_bitrate); | |
413 | else | |
414 | buf2[0] = '\0'; | |
415 | ||
fae3d88a | 416 | _snd_printd(SND_PR_VERBOSE, "HDMI: supports coding type %s:" |
ae8cb4ca WF |
417 | " channels = %d, rates =%s%s\n", |
418 | cea_audio_coding_type_names[a->format], | |
419 | a->channels, | |
420 | buf, | |
421 | buf2); | |
7f4a9f43 WF |
422 | } |
423 | ||
903b21d8 | 424 | void snd_print_channel_allocation(int spk_alloc, char *buf, int buflen) |
7f4a9f43 WF |
425 | { |
426 | int i, j; | |
427 | ||
428 | for (i = 0, j = 0; i < ARRAY_SIZE(cea_speaker_allocation_names); i++) { | |
429 | if (spk_alloc & (1 << i)) | |
06f69d17 | 430 | j += snprintf(buf + j, buflen - j, " %s", |
7f4a9f43 WF |
431 | cea_speaker_allocation_names[i]); |
432 | } | |
7f4a9f43 WF |
433 | buf[j] = '\0'; /* necessary when j == 0 */ |
434 | } | |
435 | ||
1613d6b4 | 436 | void snd_hdmi_show_eld(struct parsed_hdmi_eld *e) |
7f4a9f43 WF |
437 | { |
438 | int i; | |
ae8cb4ca | 439 | |
fae3d88a | 440 | _snd_printd(SND_PR_VERBOSE, "HDMI: detected monitor %s at connection type %s\n", |
ae8cb4ca WF |
441 | e->monitor_name, |
442 | eld_connection_type_names[e->conn_type]); | |
443 | ||
444 | if (e->spk_alloc) { | |
445 | char buf[SND_PRINT_CHANNEL_ALLOCATION_ADVISED_BUFSIZE]; | |
446 | snd_print_channel_allocation(e->spk_alloc, buf, sizeof(buf)); | |
fae3d88a | 447 | _snd_printd(SND_PR_VERBOSE, "HDMI: available speakers:%s\n", buf); |
ae8cb4ca | 448 | } |
7f4a9f43 WF |
449 | |
450 | for (i = 0; i < e->sad_count; i++) | |
451 | hdmi_show_short_audio_desc(e->sad + i); | |
452 | } | |
5f1e71b1 WF |
453 | |
454 | #ifdef CONFIG_PROC_FS | |
455 | ||
456 | static void hdmi_print_sad_info(int i, struct cea_sad *a, | |
457 | struct snd_info_buffer *buffer) | |
458 | { | |
d39b4352 | 459 | char buf[SND_PRINT_RATES_ADVISED_BUFSIZE]; |
5f1e71b1 WF |
460 | |
461 | snd_iprintf(buffer, "sad%d_coding_type\t[0x%x] %s\n", | |
462 | i, a->format, cea_audio_coding_type_names[a->format]); | |
463 | snd_iprintf(buffer, "sad%d_channels\t\t%d\n", i, a->channels); | |
464 | ||
af65cbf2 | 465 | hdmi_print_pcm_rates(a->rates, buf, sizeof(buf)); |
06f69d17 | 466 | snd_iprintf(buffer, "sad%d_rates\t\t[0x%x]%s\n", i, a->rates, buf); |
5f1e71b1 | 467 | |
d39b4352 WF |
468 | if (a->format == AUDIO_CODING_TYPE_LPCM) { |
469 | snd_print_pcm_bits(a->sample_bits, buf, sizeof(buf)); | |
470 | snd_iprintf(buffer, "sad%d_bits\t\t[0x%x]%s\n", | |
471 | i, a->sample_bits, buf); | |
472 | } | |
5f1e71b1 WF |
473 | |
474 | if (a->max_bitrate) | |
475 | snd_iprintf(buffer, "sad%d_max_bitrate\t%d\n", | |
476 | i, a->max_bitrate); | |
477 | ||
478 | if (a->profile) | |
479 | snd_iprintf(buffer, "sad%d_profile\t\t%d\n", i, a->profile); | |
480 | } | |
481 | ||
a4e9a38b TI |
482 | void snd_hdmi_print_eld_info(struct hdmi_eld *eld, |
483 | struct snd_info_buffer *buffer) | |
5f1e71b1 | 484 | { |
1613d6b4 | 485 | struct parsed_hdmi_eld *e = &eld->info; |
903b21d8 | 486 | char buf[SND_PRINT_CHANNEL_ALLOCATION_ADVISED_BUFSIZE]; |
5f1e71b1 | 487 | int i; |
1613d6b4 | 488 | static char *eld_version_names[32] = { |
4805286b WF |
489 | "reserved", |
490 | "reserved", | |
491 | "CEA-861D or below", | |
492 | [3 ... 30] = "reserved", | |
493 | [31] = "partial" | |
494 | }; | |
495 | static char *cea_edid_version_names[8] = { | |
496 | "no CEA EDID Timing Extension block present", | |
497 | "CEA-861", | |
498 | "CEA-861-A", | |
499 | "CEA-861-B, C or D", | |
500 | [4 ... 7] = "reserved" | |
501 | }; | |
5f1e71b1 | 502 | |
1613d6b4 DH |
503 | snd_iprintf(buffer, "monitor_present\t\t%d\n", eld->monitor_present); |
504 | snd_iprintf(buffer, "eld_valid\t\t%d\n", eld->eld_valid); | |
a4e9a38b | 505 | if (!eld->eld_valid) |
5d44f927 | 506 | return; |
db742104 | 507 | snd_iprintf(buffer, "monitor_name\t\t%s\n", e->monitor_name); |
5f1e71b1 WF |
508 | snd_iprintf(buffer, "connection_type\t\t%s\n", |
509 | eld_connection_type_names[e->conn_type]); | |
510 | snd_iprintf(buffer, "eld_version\t\t[0x%x] %s\n", e->eld_ver, | |
1613d6b4 | 511 | eld_version_names[e->eld_ver]); |
5f1e71b1 WF |
512 | snd_iprintf(buffer, "edid_version\t\t[0x%x] %s\n", e->cea_edid_ver, |
513 | cea_edid_version_names[e->cea_edid_ver]); | |
514 | snd_iprintf(buffer, "manufacture_id\t\t0x%x\n", e->manufacture_id); | |
515 | snd_iprintf(buffer, "product_id\t\t0x%x\n", e->product_id); | |
516 | snd_iprintf(buffer, "port_id\t\t\t0x%llx\n", (long long)e->port_id); | |
517 | snd_iprintf(buffer, "support_hdcp\t\t%d\n", e->support_hdcp); | |
518 | snd_iprintf(buffer, "support_ai\t\t%d\n", e->support_ai); | |
519 | snd_iprintf(buffer, "audio_sync_delay\t%d\n", e->aud_synch_delay); | |
520 | ||
903b21d8 | 521 | snd_print_channel_allocation(e->spk_alloc, buf, sizeof(buf)); |
06f69d17 | 522 | snd_iprintf(buffer, "speakers\t\t[0x%x]%s\n", e->spk_alloc, buf); |
5f1e71b1 WF |
523 | |
524 | snd_iprintf(buffer, "sad_count\t\t%d\n", e->sad_count); | |
525 | ||
526 | for (i = 0; i < e->sad_count; i++) | |
527 | hdmi_print_sad_info(i, e->sad + i, buffer); | |
528 | } | |
529 | ||
a4e9a38b TI |
530 | void snd_hdmi_write_eld_info(struct hdmi_eld *eld, |
531 | struct snd_info_buffer *buffer) | |
acdda791 | 532 | { |
1613d6b4 | 533 | struct parsed_hdmi_eld *e = &eld->info; |
acdda791 WF |
534 | char line[64]; |
535 | char name[64]; | |
536 | char *sname; | |
537 | long long val; | |
78735cff | 538 | unsigned int n; |
acdda791 WF |
539 | |
540 | while (!snd_info_get_line(buffer, line, sizeof(line))) { | |
541 | if (sscanf(line, "%s %llx", name, &val) != 2) | |
542 | continue; | |
acb05993 WF |
543 | /* |
544 | * We don't allow modification to these fields: | |
545 | * monitor_name manufacture_id product_id | |
546 | * eld_version edid_version | |
547 | */ | |
23ccc2bd | 548 | if (!strcmp(name, "monitor_present")) |
1613d6b4 | 549 | eld->monitor_present = val; |
23ccc2bd | 550 | else if (!strcmp(name, "eld_valid")) |
1613d6b4 | 551 | eld->eld_valid = val; |
23ccc2bd | 552 | else if (!strcmp(name, "connection_type")) |
acdda791 WF |
553 | e->conn_type = val; |
554 | else if (!strcmp(name, "port_id")) | |
555 | e->port_id = val; | |
556 | else if (!strcmp(name, "support_hdcp")) | |
557 | e->support_hdcp = val; | |
558 | else if (!strcmp(name, "support_ai")) | |
559 | e->support_ai = val; | |
560 | else if (!strcmp(name, "audio_sync_delay")) | |
561 | e->aud_synch_delay = val; | |
562 | else if (!strcmp(name, "speakers")) | |
563 | e->spk_alloc = val; | |
564 | else if (!strcmp(name, "sad_count")) | |
565 | e->sad_count = val; | |
566 | else if (!strncmp(name, "sad", 3)) { | |
567 | sname = name + 4; | |
568 | n = name[3] - '0'; | |
569 | if (name[4] >= '0' && name[4] <= '9') { | |
570 | sname++; | |
571 | n = 10 * n + name[4] - '0'; | |
572 | } | |
78735cff | 573 | if (n >= ELD_MAX_SAD) |
acdda791 WF |
574 | continue; |
575 | if (!strcmp(sname, "_coding_type")) | |
576 | e->sad[n].format = val; | |
577 | else if (!strcmp(sname, "_channels")) | |
578 | e->sad[n].channels = val; | |
579 | else if (!strcmp(sname, "_rates")) | |
580 | e->sad[n].rates = val; | |
581 | else if (!strcmp(sname, "_bits")) | |
582 | e->sad[n].sample_bits = val; | |
583 | else if (!strcmp(sname, "_max_bitrate")) | |
584 | e->sad[n].max_bitrate = val; | |
acb05993 WF |
585 | else if (!strcmp(sname, "_profile")) |
586 | e->sad[n].profile = val; | |
acdda791 WF |
587 | if (n >= e->sad_count) |
588 | e->sad_count = n + 1; | |
589 | } | |
590 | } | |
f208dba9 | 591 | } |
274714f5 TI |
592 | #endif /* CONFIG_PROC_FS */ |
593 | ||
bbbe3390 | 594 | /* update PCM info based on ELD */ |
1613d6b4 | 595 | void snd_hdmi_eld_update_pcm_info(struct parsed_hdmi_eld *e, |
2def8172 | 596 | struct hda_pcm_stream *hinfo) |
bbbe3390 | 597 | { |
2def8172 SW |
598 | u32 rates; |
599 | u64 formats; | |
600 | unsigned int maxbps; | |
601 | unsigned int channels_max; | |
bbbe3390 TI |
602 | int i; |
603 | ||
3dc86429 AH |
604 | /* assume basic audio support (the basic audio flag is not in ELD; |
605 | * however, all audio capable sinks are required to support basic | |
606 | * audio) */ | |
2def8172 SW |
607 | rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | |
608 | SNDRV_PCM_RATE_48000; | |
609 | formats = SNDRV_PCM_FMTBIT_S16_LE; | |
610 | maxbps = 16; | |
611 | channels_max = 2; | |
1613d6b4 DH |
612 | for (i = 0; i < e->sad_count; i++) { |
613 | struct cea_sad *a = &e->sad[i]; | |
2def8172 SW |
614 | rates |= a->rates; |
615 | if (a->channels > channels_max) | |
616 | channels_max = a->channels; | |
bbbe3390 | 617 | if (a->format == AUDIO_CODING_TYPE_LPCM) { |
bbbe3390 | 618 | if (a->sample_bits & AC_SUPPCM_BITS_20) { |
2def8172 SW |
619 | formats |= SNDRV_PCM_FMTBIT_S32_LE; |
620 | if (maxbps < 20) | |
621 | maxbps = 20; | |
bbbe3390 TI |
622 | } |
623 | if (a->sample_bits & AC_SUPPCM_BITS_24) { | |
2def8172 SW |
624 | formats |= SNDRV_PCM_FMTBIT_S32_LE; |
625 | if (maxbps < 24) | |
626 | maxbps = 24; | |
bbbe3390 TI |
627 | } |
628 | } | |
629 | } | |
630 | ||
bbbe3390 | 631 | /* restrict the parameters by the values the codec provides */ |
2def8172 SW |
632 | hinfo->rates &= rates; |
633 | hinfo->formats &= formats; | |
634 | hinfo->maxbps = min(hinfo->maxbps, maxbps); | |
635 | hinfo->channels_max = min(hinfo->channels_max, channels_max); | |
bbbe3390 | 636 | } |
89250f84 AH |
637 | |
638 | ||
639 | /* ATI/AMD specific stuff (ELD emulation) */ | |
640 | ||
641 | #define ATI_VERB_SET_AUDIO_DESCRIPTOR 0x776 | |
642 | #define ATI_VERB_SET_SINK_INFO_INDEX 0x780 | |
643 | #define ATI_VERB_GET_SPEAKER_ALLOCATION 0xf70 | |
644 | #define ATI_VERB_GET_AUDIO_DESCRIPTOR 0xf76 | |
645 | #define ATI_VERB_GET_AUDIO_VIDEO_DELAY 0xf7b | |
646 | #define ATI_VERB_GET_SINK_INFO_INDEX 0xf80 | |
647 | #define ATI_VERB_GET_SINK_INFO_DATA 0xf81 | |
648 | ||
649 | #define ATI_SPKALLOC_SPKALLOC 0x007f | |
650 | #define ATI_SPKALLOC_TYPE_HDMI 0x0100 | |
651 | #define ATI_SPKALLOC_TYPE_DISPLAYPORT 0x0200 | |
652 | ||
653 | /* first three bytes are just standard SAD */ | |
654 | #define ATI_AUDIODESC_CHANNELS 0x00000007 | |
655 | #define ATI_AUDIODESC_RATES 0x0000ff00 | |
656 | #define ATI_AUDIODESC_LPCM_STEREO_RATES 0xff000000 | |
657 | ||
658 | /* in standard HDMI VSDB format */ | |
659 | #define ATI_DELAY_VIDEO_LATENCY 0x000000ff | |
660 | #define ATI_DELAY_AUDIO_LATENCY 0x0000ff00 | |
661 | ||
662 | enum ati_sink_info_idx { | |
663 | ATI_INFO_IDX_MANUFACTURER_ID = 0, | |
664 | ATI_INFO_IDX_PRODUCT_ID = 1, | |
665 | ATI_INFO_IDX_SINK_DESC_LEN = 2, | |
666 | ATI_INFO_IDX_PORT_ID_LOW = 3, | |
667 | ATI_INFO_IDX_PORT_ID_HIGH = 4, | |
668 | ATI_INFO_IDX_SINK_DESC_FIRST = 5, | |
669 | ATI_INFO_IDX_SINK_DESC_LAST = 22, /* max len 18 bytes */ | |
670 | }; | |
671 | ||
672 | int snd_hdmi_get_eld_ati(struct hda_codec *codec, hda_nid_t nid, | |
673 | unsigned char *buf, int *eld_size, bool rev3_or_later) | |
674 | { | |
675 | int spkalloc, ati_sad, aud_synch; | |
676 | int sink_desc_len = 0; | |
677 | int pos, i; | |
678 | ||
679 | /* ATI/AMD does not have ELD, emulate it */ | |
680 | ||
681 | spkalloc = snd_hda_codec_read(codec, nid, 0, ATI_VERB_GET_SPEAKER_ALLOCATION, 0); | |
682 | ||
13122e6e | 683 | if (spkalloc <= 0) { |
89250f84 AH |
684 | snd_printd(KERN_INFO "HDMI ATI/AMD: no speaker allocation for ELD\n"); |
685 | return -EINVAL; | |
686 | } | |
687 | ||
688 | memset(buf, 0, ELD_FIXED_BYTES + ELD_MAX_MNL + ELD_MAX_SAD * 3); | |
689 | ||
690 | /* version */ | |
691 | buf[0] = ELD_VER_CEA_861D << 3; | |
692 | ||
693 | /* speaker allocation from EDID */ | |
694 | buf[7] = spkalloc & ATI_SPKALLOC_SPKALLOC; | |
695 | ||
696 | /* is DisplayPort? */ | |
697 | if (spkalloc & ATI_SPKALLOC_TYPE_DISPLAYPORT) | |
698 | buf[5] |= 0x04; | |
699 | ||
700 | pos = ELD_FIXED_BYTES; | |
701 | ||
702 | if (rev3_or_later) { | |
703 | int sink_info; | |
704 | ||
705 | snd_hda_codec_write(codec, nid, 0, ATI_VERB_SET_SINK_INFO_INDEX, ATI_INFO_IDX_PORT_ID_LOW); | |
706 | sink_info = snd_hda_codec_read(codec, nid, 0, ATI_VERB_GET_SINK_INFO_DATA, 0); | |
707 | put_unaligned_le32(sink_info, buf + 8); | |
708 | ||
709 | snd_hda_codec_write(codec, nid, 0, ATI_VERB_SET_SINK_INFO_INDEX, ATI_INFO_IDX_PORT_ID_HIGH); | |
710 | sink_info = snd_hda_codec_read(codec, nid, 0, ATI_VERB_GET_SINK_INFO_DATA, 0); | |
711 | put_unaligned_le32(sink_info, buf + 12); | |
712 | ||
713 | snd_hda_codec_write(codec, nid, 0, ATI_VERB_SET_SINK_INFO_INDEX, ATI_INFO_IDX_MANUFACTURER_ID); | |
714 | sink_info = snd_hda_codec_read(codec, nid, 0, ATI_VERB_GET_SINK_INFO_DATA, 0); | |
715 | put_unaligned_le16(sink_info, buf + 16); | |
716 | ||
717 | snd_hda_codec_write(codec, nid, 0, ATI_VERB_SET_SINK_INFO_INDEX, ATI_INFO_IDX_PRODUCT_ID); | |
718 | sink_info = snd_hda_codec_read(codec, nid, 0, ATI_VERB_GET_SINK_INFO_DATA, 0); | |
719 | put_unaligned_le16(sink_info, buf + 18); | |
720 | ||
721 | snd_hda_codec_write(codec, nid, 0, ATI_VERB_SET_SINK_INFO_INDEX, ATI_INFO_IDX_SINK_DESC_LEN); | |
722 | sink_desc_len = snd_hda_codec_read(codec, nid, 0, ATI_VERB_GET_SINK_INFO_DATA, 0); | |
723 | ||
724 | if (sink_desc_len > ELD_MAX_MNL) { | |
725 | snd_printd(KERN_INFO "HDMI ATI/AMD: Truncating HDMI sink description with length %d\n", | |
726 | sink_desc_len); | |
727 | sink_desc_len = ELD_MAX_MNL; | |
728 | } | |
729 | ||
730 | buf[4] |= sink_desc_len; | |
731 | ||
732 | for (i = 0; i < sink_desc_len; i++) { | |
733 | snd_hda_codec_write(codec, nid, 0, ATI_VERB_SET_SINK_INFO_INDEX, ATI_INFO_IDX_SINK_DESC_FIRST + i); | |
734 | buf[pos++] = snd_hda_codec_read(codec, nid, 0, ATI_VERB_GET_SINK_INFO_DATA, 0); | |
735 | } | |
736 | } | |
737 | ||
738 | for (i = AUDIO_CODING_TYPE_LPCM; i <= AUDIO_CODING_TYPE_WMAPRO; i++) { | |
739 | if (i == AUDIO_CODING_TYPE_SACD || i == AUDIO_CODING_TYPE_DST) | |
740 | continue; /* not handled by ATI/AMD */ | |
741 | ||
742 | snd_hda_codec_write(codec, nid, 0, ATI_VERB_SET_AUDIO_DESCRIPTOR, i << 3); | |
743 | ati_sad = snd_hda_codec_read(codec, nid, 0, ATI_VERB_GET_AUDIO_DESCRIPTOR, 0); | |
744 | ||
13122e6e AH |
745 | if (ati_sad <= 0) |
746 | continue; | |
747 | ||
89250f84 AH |
748 | if (ati_sad & ATI_AUDIODESC_RATES) { |
749 | /* format is supported, copy SAD as-is */ | |
750 | buf[pos++] = (ati_sad & 0x0000ff) >> 0; | |
751 | buf[pos++] = (ati_sad & 0x00ff00) >> 8; | |
752 | buf[pos++] = (ati_sad & 0xff0000) >> 16; | |
753 | } | |
754 | ||
755 | if (i == AUDIO_CODING_TYPE_LPCM | |
756 | && (ati_sad & ATI_AUDIODESC_LPCM_STEREO_RATES) | |
757 | && (ati_sad & ATI_AUDIODESC_LPCM_STEREO_RATES) >> 16 != (ati_sad & ATI_AUDIODESC_RATES)) { | |
758 | /* for PCM there is a separate stereo rate mask */ | |
759 | buf[pos++] = ((ati_sad & 0x000000ff) & ~ATI_AUDIODESC_CHANNELS) | 0x1; | |
760 | /* rates from the extra byte */ | |
761 | buf[pos++] = (ati_sad & 0xff000000) >> 24; | |
762 | buf[pos++] = (ati_sad & 0x00ff0000) >> 16; | |
763 | } | |
764 | } | |
765 | ||
766 | if (pos == ELD_FIXED_BYTES + sink_desc_len) { | |
767 | snd_printd(KERN_INFO "HDMI ATI/AMD: no audio descriptors for ELD\n"); | |
768 | return -EINVAL; | |
769 | } | |
770 | ||
a5666824 AH |
771 | /* |
772 | * HDMI VSDB latency format: | |
773 | * separately for both audio and video: | |
774 | * 0 field not valid or unknown latency | |
775 | * [1..251] msecs = (x-1)*2 (max 500ms with x = 251 = 0xfb) | |
776 | * 255 audio/video not supported | |
777 | * | |
778 | * HDA latency format: | |
779 | * single value indicating video latency relative to audio: | |
780 | * 0 unknown or 0ms | |
781 | * [1..250] msecs = x*2 (max 500ms with x = 250 = 0xfa) | |
782 | * [251..255] reserved | |
783 | */ | |
89250f84 AH |
784 | aud_synch = snd_hda_codec_read(codec, nid, 0, ATI_VERB_GET_AUDIO_VIDEO_DELAY, 0); |
785 | if ((aud_synch & ATI_DELAY_VIDEO_LATENCY) && (aud_synch & ATI_DELAY_AUDIO_LATENCY)) { | |
a5666824 AH |
786 | int video_latency_hdmi = (aud_synch & ATI_DELAY_VIDEO_LATENCY); |
787 | int audio_latency_hdmi = (aud_synch & ATI_DELAY_AUDIO_LATENCY) >> 8; | |
89250f84 | 788 | |
a5666824 AH |
789 | if (video_latency_hdmi <= 0xfb && audio_latency_hdmi <= 0xfb && |
790 | video_latency_hdmi > audio_latency_hdmi) | |
791 | buf[6] = video_latency_hdmi - audio_latency_hdmi; | |
792 | /* else unknown/invalid or 0ms or video ahead of audio, so use zero */ | |
89250f84 AH |
793 | } |
794 | ||
795 | /* Baseline length */ | |
796 | buf[2] = pos - 4; | |
797 | ||
798 | /* SAD count */ | |
799 | buf[5] |= ((pos - ELD_FIXED_BYTES - sink_desc_len) / 3) << 4; | |
800 | ||
801 | *eld_size = pos; | |
802 | ||
803 | return 0; | |
804 | } |