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> | |
2f6e8a85 | 29 | #include <sound/hda_chmap.h> |
7f4a9f43 WF |
30 | #include "hda_codec.h" |
31 | #include "hda_local.h" | |
32 | ||
33 | enum eld_versions { | |
34 | ELD_VER_CEA_861D = 2, | |
35 | ELD_VER_PARTIAL = 31, | |
36 | }; | |
37 | ||
7f4a9f43 WF |
38 | enum cea_edid_versions { |
39 | CEA_EDID_VER_NONE = 0, | |
40 | CEA_EDID_VER_CEA861 = 1, | |
41 | CEA_EDID_VER_CEA861A = 2, | |
42 | CEA_EDID_VER_CEA861BCD = 3, | |
43 | CEA_EDID_VER_RESERVED = 4, | |
44 | }; | |
45 | ||
d5cf00c7 | 46 | static const char * const eld_connection_type_names[4] = { |
7f4a9f43 | 47 | "HDMI", |
9415e1c4 | 48 | "DisplayPort", |
7f4a9f43 WF |
49 | "2-reserved", |
50 | "3-reserved" | |
51 | }; | |
52 | ||
53 | enum cea_audio_coding_types { | |
54 | AUDIO_CODING_TYPE_REF_STREAM_HEADER = 0, | |
55 | AUDIO_CODING_TYPE_LPCM = 1, | |
56 | AUDIO_CODING_TYPE_AC3 = 2, | |
57 | AUDIO_CODING_TYPE_MPEG1 = 3, | |
58 | AUDIO_CODING_TYPE_MP3 = 4, | |
59 | AUDIO_CODING_TYPE_MPEG2 = 5, | |
60 | AUDIO_CODING_TYPE_AACLC = 6, | |
61 | AUDIO_CODING_TYPE_DTS = 7, | |
62 | AUDIO_CODING_TYPE_ATRAC = 8, | |
63 | AUDIO_CODING_TYPE_SACD = 9, | |
64 | AUDIO_CODING_TYPE_EAC3 = 10, | |
65 | AUDIO_CODING_TYPE_DTS_HD = 11, | |
66 | AUDIO_CODING_TYPE_MLP = 12, | |
67 | AUDIO_CODING_TYPE_DST = 13, | |
68 | AUDIO_CODING_TYPE_WMAPRO = 14, | |
69 | AUDIO_CODING_TYPE_REF_CXT = 15, | |
70 | /* also include valid xtypes below */ | |
71 | AUDIO_CODING_TYPE_HE_AAC = 15, | |
72 | AUDIO_CODING_TYPE_HE_AAC2 = 16, | |
73 | AUDIO_CODING_TYPE_MPEG_SURROUND = 17, | |
74 | }; | |
75 | ||
76 | enum cea_audio_coding_xtypes { | |
77 | AUDIO_CODING_XTYPE_HE_REF_CT = 0, | |
78 | AUDIO_CODING_XTYPE_HE_AAC = 1, | |
79 | AUDIO_CODING_XTYPE_HE_AAC2 = 2, | |
80 | AUDIO_CODING_XTYPE_MPEG_SURROUND = 3, | |
81 | AUDIO_CODING_XTYPE_FIRST_RESERVED = 4, | |
82 | }; | |
83 | ||
d5cf00c7 | 84 | static const char * const cea_audio_coding_type_names[] = { |
7f4a9f43 WF |
85 | /* 0 */ "undefined", |
86 | /* 1 */ "LPCM", | |
87 | /* 2 */ "AC-3", | |
88 | /* 3 */ "MPEG1", | |
89 | /* 4 */ "MP3", | |
90 | /* 5 */ "MPEG2", | |
91 | /* 6 */ "AAC-LC", | |
92 | /* 7 */ "DTS", | |
93 | /* 8 */ "ATRAC", | |
06f69d17 | 94 | /* 9 */ "DSD (One Bit Audio)", |
7f4a9f43 WF |
95 | /* 10 */ "E-AC-3/DD+ (Dolby Digital Plus)", |
96 | /* 11 */ "DTS-HD", | |
97 | /* 12 */ "MLP (Dolby TrueHD)", | |
98 | /* 13 */ "DST", | |
99 | /* 14 */ "WMAPro", | |
100 | /* 15 */ "HE-AAC", | |
101 | /* 16 */ "HE-AACv2", | |
102 | /* 17 */ "MPEG Surround", | |
103 | }; | |
104 | ||
105 | /* | |
106 | * The following two lists are shared between | |
107 | * - HDMI audio InfoFrame (source to sink) | |
4e19c58f | 108 | * - CEA E-EDID Extension (sink to source) |
7f4a9f43 WF |
109 | */ |
110 | ||
111 | /* | |
112 | * SS1:SS0 index => sample size | |
113 | */ | |
114 | static int cea_sample_sizes[4] = { | |
115 | 0, /* 0: Refer to Stream Header */ | |
116 | AC_SUPPCM_BITS_16, /* 1: 16 bits */ | |
117 | AC_SUPPCM_BITS_20, /* 2: 20 bits */ | |
118 | AC_SUPPCM_BITS_24, /* 3: 24 bits */ | |
119 | }; | |
120 | ||
121 | /* | |
122 | * SF2:SF1:SF0 index => sampling frequency | |
123 | */ | |
124 | static int cea_sampling_frequencies[8] = { | |
125 | 0, /* 0: Refer to Stream Header */ | |
126 | SNDRV_PCM_RATE_32000, /* 1: 32000Hz */ | |
127 | SNDRV_PCM_RATE_44100, /* 2: 44100Hz */ | |
128 | SNDRV_PCM_RATE_48000, /* 3: 48000Hz */ | |
129 | SNDRV_PCM_RATE_88200, /* 4: 88200Hz */ | |
130 | SNDRV_PCM_RATE_96000, /* 5: 96000Hz */ | |
131 | SNDRV_PCM_RATE_176400, /* 6: 176400Hz */ | |
132 | SNDRV_PCM_RATE_192000, /* 7: 192000Hz */ | |
133 | }; | |
134 | ||
b6acf013 | 135 | static unsigned int hdmi_get_eld_data(struct hda_codec *codec, hda_nid_t nid, |
7f4a9f43 WF |
136 | int byte_index) |
137 | { | |
138 | unsigned int val; | |
139 | ||
140 | val = snd_hda_codec_read(codec, nid, 0, | |
141 | AC_VERB_GET_HDMI_ELDD, byte_index); | |
7f4a9f43 | 142 | #ifdef BE_PARANOID |
4e76a883 | 143 | codec_info(codec, "HDMI: ELD data byte %d: 0x%x\n", byte_index, val); |
7f4a9f43 | 144 | #endif |
b6acf013 | 145 | return val; |
7f4a9f43 WF |
146 | } |
147 | ||
148 | #define GRAB_BITS(buf, byte, lowbit, bits) \ | |
149 | ({ \ | |
150 | BUILD_BUG_ON(lowbit > 7); \ | |
151 | BUILD_BUG_ON(bits > 8); \ | |
152 | BUILD_BUG_ON(bits <= 0); \ | |
153 | \ | |
154 | (buf[byte] >> (lowbit)) & ((1 << (bits)) - 1); \ | |
155 | }) | |
156 | ||
79514d47 TI |
157 | static void hdmi_update_short_audio_desc(struct hda_codec *codec, |
158 | struct cea_sad *a, | |
7f4a9f43 WF |
159 | const unsigned char *buf) |
160 | { | |
161 | int i; | |
162 | int val; | |
163 | ||
164 | val = GRAB_BITS(buf, 1, 0, 7); | |
165 | a->rates = 0; | |
166 | for (i = 0; i < 7; i++) | |
167 | if (val & (1 << i)) | |
168 | a->rates |= cea_sampling_frequencies[i + 1]; | |
169 | ||
170 | a->channels = GRAB_BITS(buf, 0, 0, 3); | |
171 | a->channels++; | |
172 | ||
0bbaee3a AH |
173 | a->sample_bits = 0; |
174 | a->max_bitrate = 0; | |
175 | ||
7f4a9f43 WF |
176 | a->format = GRAB_BITS(buf, 0, 3, 4); |
177 | switch (a->format) { | |
178 | case AUDIO_CODING_TYPE_REF_STREAM_HEADER: | |
79514d47 | 179 | codec_info(codec, "HDMI: audio coding type 0 not expected\n"); |
7f4a9f43 WF |
180 | break; |
181 | ||
182 | case AUDIO_CODING_TYPE_LPCM: | |
183 | val = GRAB_BITS(buf, 2, 0, 3); | |
7f4a9f43 WF |
184 | for (i = 0; i < 3; i++) |
185 | if (val & (1 << i)) | |
186 | a->sample_bits |= cea_sample_sizes[i + 1]; | |
187 | break; | |
188 | ||
189 | case AUDIO_CODING_TYPE_AC3: | |
190 | case AUDIO_CODING_TYPE_MPEG1: | |
191 | case AUDIO_CODING_TYPE_MP3: | |
192 | case AUDIO_CODING_TYPE_MPEG2: | |
193 | case AUDIO_CODING_TYPE_AACLC: | |
194 | case AUDIO_CODING_TYPE_DTS: | |
195 | case AUDIO_CODING_TYPE_ATRAC: | |
196 | a->max_bitrate = GRAB_BITS(buf, 2, 0, 8); | |
197 | a->max_bitrate *= 8000; | |
198 | break; | |
199 | ||
200 | case AUDIO_CODING_TYPE_SACD: | |
201 | break; | |
202 | ||
203 | case AUDIO_CODING_TYPE_EAC3: | |
204 | break; | |
205 | ||
206 | case AUDIO_CODING_TYPE_DTS_HD: | |
207 | break; | |
208 | ||
209 | case AUDIO_CODING_TYPE_MLP: | |
210 | break; | |
211 | ||
212 | case AUDIO_CODING_TYPE_DST: | |
213 | break; | |
214 | ||
215 | case AUDIO_CODING_TYPE_WMAPRO: | |
216 | a->profile = GRAB_BITS(buf, 2, 0, 3); | |
217 | break; | |
218 | ||
219 | case AUDIO_CODING_TYPE_REF_CXT: | |
220 | a->format = GRAB_BITS(buf, 2, 3, 5); | |
221 | if (a->format == AUDIO_CODING_XTYPE_HE_REF_CT || | |
222 | a->format >= AUDIO_CODING_XTYPE_FIRST_RESERVED) { | |
79514d47 TI |
223 | codec_info(codec, |
224 | "HDMI: audio coding xtype %d not expected\n", | |
225 | a->format); | |
7f4a9f43 WF |
226 | a->format = 0; |
227 | } else | |
228 | a->format += AUDIO_CODING_TYPE_HE_AAC - | |
229 | AUDIO_CODING_XTYPE_HE_AAC; | |
230 | break; | |
231 | } | |
232 | } | |
233 | ||
234 | /* | |
235 | * Be careful, ELD buf could be totally rubbish! | |
236 | */ | |
79514d47 | 237 | int snd_hdmi_parse_eld(struct hda_codec *codec, struct parsed_hdmi_eld *e, |
1613d6b4 | 238 | const unsigned char *buf, int size) |
7f4a9f43 WF |
239 | { |
240 | int mnl; | |
241 | int i; | |
242 | ||
18014fd7 | 243 | memset(e, 0, sizeof(*e)); |
7f4a9f43 WF |
244 | e->eld_ver = GRAB_BITS(buf, 0, 3, 5); |
245 | if (e->eld_ver != ELD_VER_CEA_861D && | |
246 | e->eld_ver != ELD_VER_PARTIAL) { | |
79514d47 | 247 | codec_info(codec, "HDMI: Unknown ELD version %d\n", e->eld_ver); |
7f4a9f43 WF |
248 | goto out_fail; |
249 | } | |
250 | ||
7f4a9f43 WF |
251 | e->baseline_len = GRAB_BITS(buf, 2, 0, 8); |
252 | mnl = GRAB_BITS(buf, 4, 0, 5); | |
253 | e->cea_edid_ver = GRAB_BITS(buf, 4, 5, 3); | |
254 | ||
255 | e->support_hdcp = GRAB_BITS(buf, 5, 0, 1); | |
256 | e->support_ai = GRAB_BITS(buf, 5, 1, 1); | |
257 | e->conn_type = GRAB_BITS(buf, 5, 2, 2); | |
258 | e->sad_count = GRAB_BITS(buf, 5, 4, 4); | |
259 | ||
260 | e->aud_synch_delay = GRAB_BITS(buf, 6, 0, 8) * 2; | |
261 | e->spk_alloc = GRAB_BITS(buf, 7, 0, 7); | |
262 | ||
263 | e->port_id = get_unaligned_le64(buf + 8); | |
264 | ||
265 | /* not specified, but the spec's tendency is little endian */ | |
266 | e->manufacture_id = get_unaligned_le16(buf + 16); | |
267 | e->product_id = get_unaligned_le16(buf + 18); | |
268 | ||
269 | if (mnl > ELD_MAX_MNL) { | |
79514d47 | 270 | codec_info(codec, "HDMI: MNL is reserved value %d\n", mnl); |
7f4a9f43 WF |
271 | goto out_fail; |
272 | } else if (ELD_FIXED_BYTES + mnl > size) { | |
79514d47 | 273 | codec_info(codec, "HDMI: out of range MNL %d\n", mnl); |
7f4a9f43 WF |
274 | goto out_fail; |
275 | } else | |
f5b2d0ef | 276 | strlcpy(e->monitor_name, buf + ELD_FIXED_BYTES, mnl + 1); |
7f4a9f43 WF |
277 | |
278 | for (i = 0; i < e->sad_count; i++) { | |
279 | if (ELD_FIXED_BYTES + mnl + 3 * (i + 1) > size) { | |
79514d47 | 280 | codec_info(codec, "HDMI: out of range SAD %d\n", i); |
7f4a9f43 WF |
281 | goto out_fail; |
282 | } | |
79514d47 | 283 | hdmi_update_short_audio_desc(codec, e->sad + i, |
7f4a9f43 WF |
284 | buf + ELD_FIXED_BYTES + mnl + 3 * i); |
285 | } | |
286 | ||
2d1b439b WF |
287 | /* |
288 | * HDMI sink's ELD info cannot always be retrieved for now, e.g. | |
289 | * in console or for audio devices. Assume the highest speakers | |
290 | * configuration, to _not_ prohibit multi-channel audio playback. | |
291 | */ | |
292 | if (!e->spk_alloc) | |
293 | e->spk_alloc = 0xffff; | |
294 | ||
7f4a9f43 WF |
295 | return 0; |
296 | ||
297 | out_fail: | |
7f4a9f43 WF |
298 | return -EINVAL; |
299 | } | |
300 | ||
7f4a9f43 WF |
301 | int snd_hdmi_get_eld_size(struct hda_codec *codec, hda_nid_t nid) |
302 | { | |
303 | return snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_HDMI_DIP_SIZE, | |
304 | AC_DIPSIZE_ELD_BUF); | |
305 | } | |
306 | ||
1613d6b4 DH |
307 | int snd_hdmi_get_eld(struct hda_codec *codec, hda_nid_t nid, |
308 | unsigned char *buf, int *eld_size) | |
7f4a9f43 WF |
309 | { |
310 | int i; | |
2ef5692e | 311 | int ret = 0; |
7f4a9f43 | 312 | int size; |
7f4a9f43 | 313 | |
14bc52b8 PLB |
314 | /* |
315 | * ELD size is initialized to zero in caller function. If no errors and | |
1613d6b4 | 316 | * ELD is valid, actual eld_size is assigned. |
14bc52b8 PLB |
317 | */ |
318 | ||
7f4a9f43 WF |
319 | size = snd_hdmi_get_eld_size(codec, nid); |
320 | if (size == 0) { | |
321 | /* wfg: workaround for ASUS P5E-VM HDMI board */ | |
4e76a883 | 322 | codec_info(codec, "HDMI: ELD buf size is 0, force 128\n"); |
7f4a9f43 WF |
323 | size = 128; |
324 | } | |
14bc52b8 | 325 | if (size < ELD_FIXED_BYTES || size > ELD_MAX_SIZE) { |
4e76a883 | 326 | codec_info(codec, "HDMI: invalid ELD buf size %d\n", size); |
7f4a9f43 WF |
327 | return -ERANGE; |
328 | } | |
329 | ||
14bc52b8 | 330 | /* set ELD buffer */ |
b6acf013 TI |
331 | for (i = 0; i < size; i++) { |
332 | unsigned int val = hdmi_get_eld_data(codec, nid, i); | |
a370fc62 WF |
333 | /* |
334 | * Graphics driver might be writing to ELD buffer right now. | |
335 | * Just abort. The caller will repoll after a while. | |
336 | */ | |
b6acf013 | 337 | if (!(val & AC_ELDD_ELD_VALID)) { |
4e76a883 | 338 | codec_info(codec, "HDMI: invalid ELD data byte %d\n", i); |
a370fc62 WF |
339 | ret = -EINVAL; |
340 | goto error; | |
341 | } | |
342 | val &= AC_ELDD_ELD_DATA; | |
343 | /* | |
344 | * The first byte cannot be zero. This can happen on some DVI | |
345 | * connections. Some Intel chips may also need some 250ms delay | |
346 | * to return non-zero ELD data, even when the graphics driver | |
347 | * correctly writes ELD content before setting ELD_valid bit. | |
348 | */ | |
349 | if (!val && !i) { | |
4e76a883 | 350 | codec_dbg(codec, "HDMI: 0 ELD data\n"); |
a370fc62 WF |
351 | ret = -EINVAL; |
352 | goto error; | |
353 | } | |
b6acf013 TI |
354 | buf[i] = val; |
355 | } | |
7f4a9f43 | 356 | |
1613d6b4 | 357 | *eld_size = size; |
b6acf013 | 358 | error: |
7f4a9f43 WF |
359 | return ret; |
360 | } | |
361 | ||
a11e9b16 | 362 | /* |
af65cbf2 PLB |
363 | * SNDRV_PCM_RATE_* and AC_PAR_PCM values don't match, print correct rates with |
364 | * hdmi-specific routine. | |
365 | */ | |
366 | static void hdmi_print_pcm_rates(int pcm, char *buf, int buflen) | |
367 | { | |
368 | static unsigned int alsa_rates[] = { | |
25dc16f6 AH |
369 | 5512, 8000, 11025, 16000, 22050, 32000, 44100, 48000, 64000, |
370 | 88200, 96000, 176400, 192000, 384000 | |
af65cbf2 PLB |
371 | }; |
372 | int i, j; | |
373 | ||
374 | for (i = 0, j = 0; i < ARRAY_SIZE(alsa_rates); i++) | |
375 | if (pcm & (1 << i)) | |
376 | j += snprintf(buf + j, buflen - j, " %d", | |
377 | alsa_rates[i]); | |
378 | ||
379 | buf[j] = '\0'; /* necessary when j == 0 */ | |
380 | } | |
381 | ||
f71ff0d7 TI |
382 | #define SND_PRINT_RATES_ADVISED_BUFSIZE 80 |
383 | ||
79514d47 TI |
384 | static void hdmi_show_short_audio_desc(struct hda_codec *codec, |
385 | struct cea_sad *a) | |
7f4a9f43 WF |
386 | { |
387 | char buf[SND_PRINT_RATES_ADVISED_BUFSIZE]; | |
ae8cb4ca | 388 | char buf2[8 + SND_PRINT_BITS_ADVISED_BUFSIZE] = ", bits ="; |
7f4a9f43 | 389 | |
ae8cb4ca WF |
390 | if (!a->format) |
391 | return; | |
7f4a9f43 | 392 | |
af65cbf2 | 393 | hdmi_print_pcm_rates(a->rates, buf, sizeof(buf)); |
7f4a9f43 WF |
394 | |
395 | if (a->format == AUDIO_CODING_TYPE_LPCM) | |
d757534e | 396 | snd_print_pcm_bits(a->sample_bits, buf2 + 8, sizeof(buf2) - 8); |
ae8cb4ca WF |
397 | else if (a->max_bitrate) |
398 | snprintf(buf2, sizeof(buf2), | |
399 | ", max bitrate = %d", a->max_bitrate); | |
400 | else | |
401 | buf2[0] = '\0'; | |
402 | ||
79514d47 TI |
403 | codec_dbg(codec, |
404 | "HDMI: supports coding type %s: channels = %d, rates =%s%s\n", | |
405 | cea_audio_coding_type_names[a->format], | |
406 | a->channels, buf, buf2); | |
7f4a9f43 WF |
407 | } |
408 | ||
79514d47 | 409 | void snd_hdmi_show_eld(struct hda_codec *codec, struct parsed_hdmi_eld *e) |
7f4a9f43 WF |
410 | { |
411 | int i; | |
ae8cb4ca | 412 | |
79514d47 | 413 | codec_dbg(codec, "HDMI: detected monitor %s at connection type %s\n", |
ae8cb4ca WF |
414 | e->monitor_name, |
415 | eld_connection_type_names[e->conn_type]); | |
416 | ||
417 | if (e->spk_alloc) { | |
418 | char buf[SND_PRINT_CHANNEL_ALLOCATION_ADVISED_BUFSIZE]; | |
bb63f726 | 419 | snd_hdac_print_channel_allocation(e->spk_alloc, buf, sizeof(buf)); |
79514d47 | 420 | codec_dbg(codec, "HDMI: available speakers:%s\n", buf); |
ae8cb4ca | 421 | } |
7f4a9f43 WF |
422 | |
423 | for (i = 0; i < e->sad_count; i++) | |
79514d47 | 424 | hdmi_show_short_audio_desc(codec, e->sad + i); |
7f4a9f43 | 425 | } |
5f1e71b1 | 426 | |
cd6a6503 | 427 | #ifdef CONFIG_SND_PROC_FS |
5f1e71b1 WF |
428 | |
429 | static void hdmi_print_sad_info(int i, struct cea_sad *a, | |
430 | struct snd_info_buffer *buffer) | |
431 | { | |
d39b4352 | 432 | char buf[SND_PRINT_RATES_ADVISED_BUFSIZE]; |
5f1e71b1 WF |
433 | |
434 | snd_iprintf(buffer, "sad%d_coding_type\t[0x%x] %s\n", | |
435 | i, a->format, cea_audio_coding_type_names[a->format]); | |
436 | snd_iprintf(buffer, "sad%d_channels\t\t%d\n", i, a->channels); | |
437 | ||
af65cbf2 | 438 | hdmi_print_pcm_rates(a->rates, buf, sizeof(buf)); |
06f69d17 | 439 | snd_iprintf(buffer, "sad%d_rates\t\t[0x%x]%s\n", i, a->rates, buf); |
5f1e71b1 | 440 | |
d39b4352 WF |
441 | if (a->format == AUDIO_CODING_TYPE_LPCM) { |
442 | snd_print_pcm_bits(a->sample_bits, buf, sizeof(buf)); | |
443 | snd_iprintf(buffer, "sad%d_bits\t\t[0x%x]%s\n", | |
444 | i, a->sample_bits, buf); | |
445 | } | |
5f1e71b1 WF |
446 | |
447 | if (a->max_bitrate) | |
448 | snd_iprintf(buffer, "sad%d_max_bitrate\t%d\n", | |
449 | i, a->max_bitrate); | |
450 | ||
451 | if (a->profile) | |
452 | snd_iprintf(buffer, "sad%d_profile\t\t%d\n", i, a->profile); | |
453 | } | |
454 | ||
a4e9a38b TI |
455 | void snd_hdmi_print_eld_info(struct hdmi_eld *eld, |
456 | struct snd_info_buffer *buffer) | |
5f1e71b1 | 457 | { |
1613d6b4 | 458 | struct parsed_hdmi_eld *e = &eld->info; |
903b21d8 | 459 | char buf[SND_PRINT_CHANNEL_ALLOCATION_ADVISED_BUFSIZE]; |
5f1e71b1 | 460 | int i; |
d5cf00c7 | 461 | static const char * const eld_version_names[32] = { |
4805286b WF |
462 | "reserved", |
463 | "reserved", | |
464 | "CEA-861D or below", | |
465 | [3 ... 30] = "reserved", | |
466 | [31] = "partial" | |
467 | }; | |
d5cf00c7 | 468 | static const char * const cea_edid_version_names[8] = { |
4805286b WF |
469 | "no CEA EDID Timing Extension block present", |
470 | "CEA-861", | |
471 | "CEA-861-A", | |
472 | "CEA-861-B, C or D", | |
473 | [4 ... 7] = "reserved" | |
474 | }; | |
5f1e71b1 | 475 | |
1613d6b4 DH |
476 | snd_iprintf(buffer, "monitor_present\t\t%d\n", eld->monitor_present); |
477 | snd_iprintf(buffer, "eld_valid\t\t%d\n", eld->eld_valid); | |
a4e9a38b | 478 | if (!eld->eld_valid) |
5d44f927 | 479 | return; |
db742104 | 480 | snd_iprintf(buffer, "monitor_name\t\t%s\n", e->monitor_name); |
5f1e71b1 WF |
481 | snd_iprintf(buffer, "connection_type\t\t%s\n", |
482 | eld_connection_type_names[e->conn_type]); | |
483 | snd_iprintf(buffer, "eld_version\t\t[0x%x] %s\n", e->eld_ver, | |
1613d6b4 | 484 | eld_version_names[e->eld_ver]); |
5f1e71b1 WF |
485 | snd_iprintf(buffer, "edid_version\t\t[0x%x] %s\n", e->cea_edid_ver, |
486 | cea_edid_version_names[e->cea_edid_ver]); | |
487 | snd_iprintf(buffer, "manufacture_id\t\t0x%x\n", e->manufacture_id); | |
488 | snd_iprintf(buffer, "product_id\t\t0x%x\n", e->product_id); | |
489 | snd_iprintf(buffer, "port_id\t\t\t0x%llx\n", (long long)e->port_id); | |
490 | snd_iprintf(buffer, "support_hdcp\t\t%d\n", e->support_hdcp); | |
491 | snd_iprintf(buffer, "support_ai\t\t%d\n", e->support_ai); | |
492 | snd_iprintf(buffer, "audio_sync_delay\t%d\n", e->aud_synch_delay); | |
493 | ||
bb63f726 | 494 | snd_hdac_print_channel_allocation(e->spk_alloc, buf, sizeof(buf)); |
06f69d17 | 495 | snd_iprintf(buffer, "speakers\t\t[0x%x]%s\n", e->spk_alloc, buf); |
5f1e71b1 WF |
496 | |
497 | snd_iprintf(buffer, "sad_count\t\t%d\n", e->sad_count); | |
498 | ||
499 | for (i = 0; i < e->sad_count; i++) | |
500 | hdmi_print_sad_info(i, e->sad + i, buffer); | |
501 | } | |
502 | ||
a4e9a38b TI |
503 | void snd_hdmi_write_eld_info(struct hdmi_eld *eld, |
504 | struct snd_info_buffer *buffer) | |
acdda791 | 505 | { |
1613d6b4 | 506 | struct parsed_hdmi_eld *e = &eld->info; |
acdda791 WF |
507 | char line[64]; |
508 | char name[64]; | |
509 | char *sname; | |
510 | long long val; | |
78735cff | 511 | unsigned int n; |
acdda791 WF |
512 | |
513 | while (!snd_info_get_line(buffer, line, sizeof(line))) { | |
514 | if (sscanf(line, "%s %llx", name, &val) != 2) | |
515 | continue; | |
acb05993 WF |
516 | /* |
517 | * We don't allow modification to these fields: | |
518 | * monitor_name manufacture_id product_id | |
519 | * eld_version edid_version | |
520 | */ | |
23ccc2bd | 521 | if (!strcmp(name, "monitor_present")) |
1613d6b4 | 522 | eld->monitor_present = val; |
23ccc2bd | 523 | else if (!strcmp(name, "eld_valid")) |
1613d6b4 | 524 | eld->eld_valid = val; |
23ccc2bd | 525 | else if (!strcmp(name, "connection_type")) |
acdda791 WF |
526 | e->conn_type = val; |
527 | else if (!strcmp(name, "port_id")) | |
528 | e->port_id = val; | |
529 | else if (!strcmp(name, "support_hdcp")) | |
530 | e->support_hdcp = val; | |
531 | else if (!strcmp(name, "support_ai")) | |
532 | e->support_ai = val; | |
533 | else if (!strcmp(name, "audio_sync_delay")) | |
534 | e->aud_synch_delay = val; | |
535 | else if (!strcmp(name, "speakers")) | |
536 | e->spk_alloc = val; | |
537 | else if (!strcmp(name, "sad_count")) | |
538 | e->sad_count = val; | |
539 | else if (!strncmp(name, "sad", 3)) { | |
540 | sname = name + 4; | |
541 | n = name[3] - '0'; | |
542 | if (name[4] >= '0' && name[4] <= '9') { | |
543 | sname++; | |
544 | n = 10 * n + name[4] - '0'; | |
545 | } | |
78735cff | 546 | if (n >= ELD_MAX_SAD) |
acdda791 WF |
547 | continue; |
548 | if (!strcmp(sname, "_coding_type")) | |
549 | e->sad[n].format = val; | |
550 | else if (!strcmp(sname, "_channels")) | |
551 | e->sad[n].channels = val; | |
552 | else if (!strcmp(sname, "_rates")) | |
553 | e->sad[n].rates = val; | |
554 | else if (!strcmp(sname, "_bits")) | |
555 | e->sad[n].sample_bits = val; | |
556 | else if (!strcmp(sname, "_max_bitrate")) | |
557 | e->sad[n].max_bitrate = val; | |
acb05993 WF |
558 | else if (!strcmp(sname, "_profile")) |
559 | e->sad[n].profile = val; | |
acdda791 WF |
560 | if (n >= e->sad_count) |
561 | e->sad_count = n + 1; | |
562 | } | |
563 | } | |
f208dba9 | 564 | } |
cd6a6503 | 565 | #endif /* CONFIG_SND_PROC_FS */ |
274714f5 | 566 | |
bbbe3390 | 567 | /* update PCM info based on ELD */ |
1613d6b4 | 568 | void snd_hdmi_eld_update_pcm_info(struct parsed_hdmi_eld *e, |
2def8172 | 569 | struct hda_pcm_stream *hinfo) |
bbbe3390 | 570 | { |
2def8172 SW |
571 | u32 rates; |
572 | u64 formats; | |
573 | unsigned int maxbps; | |
574 | unsigned int channels_max; | |
bbbe3390 TI |
575 | int i; |
576 | ||
3dc86429 AH |
577 | /* assume basic audio support (the basic audio flag is not in ELD; |
578 | * however, all audio capable sinks are required to support basic | |
579 | * audio) */ | |
2def8172 SW |
580 | rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | |
581 | SNDRV_PCM_RATE_48000; | |
582 | formats = SNDRV_PCM_FMTBIT_S16_LE; | |
583 | maxbps = 16; | |
584 | channels_max = 2; | |
1613d6b4 DH |
585 | for (i = 0; i < e->sad_count; i++) { |
586 | struct cea_sad *a = &e->sad[i]; | |
2def8172 SW |
587 | rates |= a->rates; |
588 | if (a->channels > channels_max) | |
589 | channels_max = a->channels; | |
bbbe3390 | 590 | if (a->format == AUDIO_CODING_TYPE_LPCM) { |
bbbe3390 | 591 | if (a->sample_bits & AC_SUPPCM_BITS_20) { |
2def8172 SW |
592 | formats |= SNDRV_PCM_FMTBIT_S32_LE; |
593 | if (maxbps < 20) | |
594 | maxbps = 20; | |
bbbe3390 TI |
595 | } |
596 | if (a->sample_bits & AC_SUPPCM_BITS_24) { | |
2def8172 SW |
597 | formats |= SNDRV_PCM_FMTBIT_S32_LE; |
598 | if (maxbps < 24) | |
599 | maxbps = 24; | |
bbbe3390 TI |
600 | } |
601 | } | |
602 | } | |
603 | ||
bbbe3390 | 604 | /* restrict the parameters by the values the codec provides */ |
2def8172 SW |
605 | hinfo->rates &= rates; |
606 | hinfo->formats &= formats; | |
607 | hinfo->maxbps = min(hinfo->maxbps, maxbps); | |
608 | hinfo->channels_max = min(hinfo->channels_max, channels_max); | |
bbbe3390 | 609 | } |
89250f84 AH |
610 | |
611 | ||
612 | /* ATI/AMD specific stuff (ELD emulation) */ | |
613 | ||
614 | #define ATI_VERB_SET_AUDIO_DESCRIPTOR 0x776 | |
615 | #define ATI_VERB_SET_SINK_INFO_INDEX 0x780 | |
616 | #define ATI_VERB_GET_SPEAKER_ALLOCATION 0xf70 | |
617 | #define ATI_VERB_GET_AUDIO_DESCRIPTOR 0xf76 | |
618 | #define ATI_VERB_GET_AUDIO_VIDEO_DELAY 0xf7b | |
619 | #define ATI_VERB_GET_SINK_INFO_INDEX 0xf80 | |
620 | #define ATI_VERB_GET_SINK_INFO_DATA 0xf81 | |
621 | ||
622 | #define ATI_SPKALLOC_SPKALLOC 0x007f | |
623 | #define ATI_SPKALLOC_TYPE_HDMI 0x0100 | |
624 | #define ATI_SPKALLOC_TYPE_DISPLAYPORT 0x0200 | |
625 | ||
626 | /* first three bytes are just standard SAD */ | |
627 | #define ATI_AUDIODESC_CHANNELS 0x00000007 | |
628 | #define ATI_AUDIODESC_RATES 0x0000ff00 | |
629 | #define ATI_AUDIODESC_LPCM_STEREO_RATES 0xff000000 | |
630 | ||
631 | /* in standard HDMI VSDB format */ | |
632 | #define ATI_DELAY_VIDEO_LATENCY 0x000000ff | |
633 | #define ATI_DELAY_AUDIO_LATENCY 0x0000ff00 | |
634 | ||
635 | enum ati_sink_info_idx { | |
636 | ATI_INFO_IDX_MANUFACTURER_ID = 0, | |
637 | ATI_INFO_IDX_PRODUCT_ID = 1, | |
638 | ATI_INFO_IDX_SINK_DESC_LEN = 2, | |
639 | ATI_INFO_IDX_PORT_ID_LOW = 3, | |
640 | ATI_INFO_IDX_PORT_ID_HIGH = 4, | |
641 | ATI_INFO_IDX_SINK_DESC_FIRST = 5, | |
642 | ATI_INFO_IDX_SINK_DESC_LAST = 22, /* max len 18 bytes */ | |
643 | }; | |
644 | ||
645 | int snd_hdmi_get_eld_ati(struct hda_codec *codec, hda_nid_t nid, | |
646 | unsigned char *buf, int *eld_size, bool rev3_or_later) | |
647 | { | |
648 | int spkalloc, ati_sad, aud_synch; | |
649 | int sink_desc_len = 0; | |
650 | int pos, i; | |
651 | ||
652 | /* ATI/AMD does not have ELD, emulate it */ | |
653 | ||
654 | spkalloc = snd_hda_codec_read(codec, nid, 0, ATI_VERB_GET_SPEAKER_ALLOCATION, 0); | |
655 | ||
13122e6e | 656 | if (spkalloc <= 0) { |
4e76a883 | 657 | codec_info(codec, "HDMI ATI/AMD: no speaker allocation for ELD\n"); |
89250f84 AH |
658 | return -EINVAL; |
659 | } | |
660 | ||
661 | memset(buf, 0, ELD_FIXED_BYTES + ELD_MAX_MNL + ELD_MAX_SAD * 3); | |
662 | ||
663 | /* version */ | |
664 | buf[0] = ELD_VER_CEA_861D << 3; | |
665 | ||
666 | /* speaker allocation from EDID */ | |
667 | buf[7] = spkalloc & ATI_SPKALLOC_SPKALLOC; | |
668 | ||
669 | /* is DisplayPort? */ | |
670 | if (spkalloc & ATI_SPKALLOC_TYPE_DISPLAYPORT) | |
671 | buf[5] |= 0x04; | |
672 | ||
673 | pos = ELD_FIXED_BYTES; | |
674 | ||
675 | if (rev3_or_later) { | |
676 | int sink_info; | |
677 | ||
678 | snd_hda_codec_write(codec, nid, 0, ATI_VERB_SET_SINK_INFO_INDEX, ATI_INFO_IDX_PORT_ID_LOW); | |
679 | sink_info = snd_hda_codec_read(codec, nid, 0, ATI_VERB_GET_SINK_INFO_DATA, 0); | |
680 | put_unaligned_le32(sink_info, buf + 8); | |
681 | ||
682 | snd_hda_codec_write(codec, nid, 0, ATI_VERB_SET_SINK_INFO_INDEX, ATI_INFO_IDX_PORT_ID_HIGH); | |
683 | sink_info = snd_hda_codec_read(codec, nid, 0, ATI_VERB_GET_SINK_INFO_DATA, 0); | |
684 | put_unaligned_le32(sink_info, buf + 12); | |
685 | ||
686 | snd_hda_codec_write(codec, nid, 0, ATI_VERB_SET_SINK_INFO_INDEX, ATI_INFO_IDX_MANUFACTURER_ID); | |
687 | sink_info = snd_hda_codec_read(codec, nid, 0, ATI_VERB_GET_SINK_INFO_DATA, 0); | |
688 | put_unaligned_le16(sink_info, buf + 16); | |
689 | ||
690 | snd_hda_codec_write(codec, nid, 0, ATI_VERB_SET_SINK_INFO_INDEX, ATI_INFO_IDX_PRODUCT_ID); | |
691 | sink_info = snd_hda_codec_read(codec, nid, 0, ATI_VERB_GET_SINK_INFO_DATA, 0); | |
692 | put_unaligned_le16(sink_info, buf + 18); | |
693 | ||
694 | snd_hda_codec_write(codec, nid, 0, ATI_VERB_SET_SINK_INFO_INDEX, ATI_INFO_IDX_SINK_DESC_LEN); | |
695 | sink_desc_len = snd_hda_codec_read(codec, nid, 0, ATI_VERB_GET_SINK_INFO_DATA, 0); | |
696 | ||
697 | if (sink_desc_len > ELD_MAX_MNL) { | |
4e76a883 | 698 | codec_info(codec, "HDMI ATI/AMD: Truncating HDMI sink description with length %d\n", |
89250f84 AH |
699 | sink_desc_len); |
700 | sink_desc_len = ELD_MAX_MNL; | |
701 | } | |
702 | ||
703 | buf[4] |= sink_desc_len; | |
704 | ||
705 | for (i = 0; i < sink_desc_len; i++) { | |
706 | snd_hda_codec_write(codec, nid, 0, ATI_VERB_SET_SINK_INFO_INDEX, ATI_INFO_IDX_SINK_DESC_FIRST + i); | |
707 | buf[pos++] = snd_hda_codec_read(codec, nid, 0, ATI_VERB_GET_SINK_INFO_DATA, 0); | |
708 | } | |
709 | } | |
710 | ||
711 | for (i = AUDIO_CODING_TYPE_LPCM; i <= AUDIO_CODING_TYPE_WMAPRO; i++) { | |
712 | if (i == AUDIO_CODING_TYPE_SACD || i == AUDIO_CODING_TYPE_DST) | |
713 | continue; /* not handled by ATI/AMD */ | |
714 | ||
715 | snd_hda_codec_write(codec, nid, 0, ATI_VERB_SET_AUDIO_DESCRIPTOR, i << 3); | |
716 | ati_sad = snd_hda_codec_read(codec, nid, 0, ATI_VERB_GET_AUDIO_DESCRIPTOR, 0); | |
717 | ||
13122e6e AH |
718 | if (ati_sad <= 0) |
719 | continue; | |
720 | ||
89250f84 AH |
721 | if (ati_sad & ATI_AUDIODESC_RATES) { |
722 | /* format is supported, copy SAD as-is */ | |
723 | buf[pos++] = (ati_sad & 0x0000ff) >> 0; | |
724 | buf[pos++] = (ati_sad & 0x00ff00) >> 8; | |
725 | buf[pos++] = (ati_sad & 0xff0000) >> 16; | |
726 | } | |
727 | ||
728 | if (i == AUDIO_CODING_TYPE_LPCM | |
729 | && (ati_sad & ATI_AUDIODESC_LPCM_STEREO_RATES) | |
730 | && (ati_sad & ATI_AUDIODESC_LPCM_STEREO_RATES) >> 16 != (ati_sad & ATI_AUDIODESC_RATES)) { | |
731 | /* for PCM there is a separate stereo rate mask */ | |
732 | buf[pos++] = ((ati_sad & 0x000000ff) & ~ATI_AUDIODESC_CHANNELS) | 0x1; | |
733 | /* rates from the extra byte */ | |
734 | buf[pos++] = (ati_sad & 0xff000000) >> 24; | |
735 | buf[pos++] = (ati_sad & 0x00ff0000) >> 16; | |
736 | } | |
737 | } | |
738 | ||
739 | if (pos == ELD_FIXED_BYTES + sink_desc_len) { | |
4e76a883 | 740 | codec_info(codec, "HDMI ATI/AMD: no audio descriptors for ELD\n"); |
89250f84 AH |
741 | return -EINVAL; |
742 | } | |
743 | ||
a5666824 AH |
744 | /* |
745 | * HDMI VSDB latency format: | |
746 | * separately for both audio and video: | |
747 | * 0 field not valid or unknown latency | |
748 | * [1..251] msecs = (x-1)*2 (max 500ms with x = 251 = 0xfb) | |
749 | * 255 audio/video not supported | |
750 | * | |
751 | * HDA latency format: | |
752 | * single value indicating video latency relative to audio: | |
753 | * 0 unknown or 0ms | |
754 | * [1..250] msecs = x*2 (max 500ms with x = 250 = 0xfa) | |
755 | * [251..255] reserved | |
756 | */ | |
89250f84 AH |
757 | aud_synch = snd_hda_codec_read(codec, nid, 0, ATI_VERB_GET_AUDIO_VIDEO_DELAY, 0); |
758 | if ((aud_synch & ATI_DELAY_VIDEO_LATENCY) && (aud_synch & ATI_DELAY_AUDIO_LATENCY)) { | |
a5666824 AH |
759 | int video_latency_hdmi = (aud_synch & ATI_DELAY_VIDEO_LATENCY); |
760 | int audio_latency_hdmi = (aud_synch & ATI_DELAY_AUDIO_LATENCY) >> 8; | |
89250f84 | 761 | |
a5666824 AH |
762 | if (video_latency_hdmi <= 0xfb && audio_latency_hdmi <= 0xfb && |
763 | video_latency_hdmi > audio_latency_hdmi) | |
764 | buf[6] = video_latency_hdmi - audio_latency_hdmi; | |
765 | /* else unknown/invalid or 0ms or video ahead of audio, so use zero */ | |
89250f84 AH |
766 | } |
767 | ||
89250f84 AH |
768 | /* SAD count */ |
769 | buf[5] |= ((pos - ELD_FIXED_BYTES - sink_desc_len) / 3) << 4; | |
770 | ||
679605c7 AH |
771 | /* Baseline ELD block length is 4-byte aligned */ |
772 | pos = round_up(pos, 4); | |
773 | ||
774 | /* Baseline ELD length (4-byte header is not counted in) */ | |
775 | buf[2] = (pos - 4) / 4; | |
776 | ||
89250f84 AH |
777 | *eld_size = pos; |
778 | ||
779 | return 0; | |
780 | } |