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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. | |
5 | * | |
6 | * Authors: | |
7 | * Wu Fengguang <wfg@linux.intel.com> | |
8 | * | |
9 | * This driver is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This driver is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | #include <linux/init.h> | |
5a0e3ad6 | 25 | #include <linux/slab.h> |
7f4a9f43 WF |
26 | #include <sound/core.h> |
27 | #include <asm/unaligned.h> | |
28 | #include "hda_codec.h" | |
29 | #include "hda_local.h" | |
30 | ||
31 | enum eld_versions { | |
32 | ELD_VER_CEA_861D = 2, | |
33 | ELD_VER_PARTIAL = 31, | |
34 | }; | |
35 | ||
7f4a9f43 WF |
36 | enum cea_edid_versions { |
37 | CEA_EDID_VER_NONE = 0, | |
38 | CEA_EDID_VER_CEA861 = 1, | |
39 | CEA_EDID_VER_CEA861A = 2, | |
40 | CEA_EDID_VER_CEA861BCD = 3, | |
41 | CEA_EDID_VER_RESERVED = 4, | |
42 | }; | |
43 | ||
7f4a9f43 WF |
44 | static char *cea_speaker_allocation_names[] = { |
45 | /* 0 */ "FL/FR", | |
46 | /* 1 */ "LFE", | |
47 | /* 2 */ "FC", | |
48 | /* 3 */ "RL/RR", | |
49 | /* 4 */ "RC", | |
50 | /* 5 */ "FLC/FRC", | |
51 | /* 6 */ "RLC/RRC", | |
52 | /* 7 */ "FLW/FRW", | |
53 | /* 8 */ "FLH/FRH", | |
54 | /* 9 */ "TC", | |
55 | /* 10 */ "FCH", | |
56 | }; | |
57 | ||
58 | static char *eld_connection_type_names[4] = { | |
59 | "HDMI", | |
9415e1c4 | 60 | "DisplayPort", |
7f4a9f43 WF |
61 | "2-reserved", |
62 | "3-reserved" | |
63 | }; | |
64 | ||
65 | enum cea_audio_coding_types { | |
66 | AUDIO_CODING_TYPE_REF_STREAM_HEADER = 0, | |
67 | AUDIO_CODING_TYPE_LPCM = 1, | |
68 | AUDIO_CODING_TYPE_AC3 = 2, | |
69 | AUDIO_CODING_TYPE_MPEG1 = 3, | |
70 | AUDIO_CODING_TYPE_MP3 = 4, | |
71 | AUDIO_CODING_TYPE_MPEG2 = 5, | |
72 | AUDIO_CODING_TYPE_AACLC = 6, | |
73 | AUDIO_CODING_TYPE_DTS = 7, | |
74 | AUDIO_CODING_TYPE_ATRAC = 8, | |
75 | AUDIO_CODING_TYPE_SACD = 9, | |
76 | AUDIO_CODING_TYPE_EAC3 = 10, | |
77 | AUDIO_CODING_TYPE_DTS_HD = 11, | |
78 | AUDIO_CODING_TYPE_MLP = 12, | |
79 | AUDIO_CODING_TYPE_DST = 13, | |
80 | AUDIO_CODING_TYPE_WMAPRO = 14, | |
81 | AUDIO_CODING_TYPE_REF_CXT = 15, | |
82 | /* also include valid xtypes below */ | |
83 | AUDIO_CODING_TYPE_HE_AAC = 15, | |
84 | AUDIO_CODING_TYPE_HE_AAC2 = 16, | |
85 | AUDIO_CODING_TYPE_MPEG_SURROUND = 17, | |
86 | }; | |
87 | ||
88 | enum cea_audio_coding_xtypes { | |
89 | AUDIO_CODING_XTYPE_HE_REF_CT = 0, | |
90 | AUDIO_CODING_XTYPE_HE_AAC = 1, | |
91 | AUDIO_CODING_XTYPE_HE_AAC2 = 2, | |
92 | AUDIO_CODING_XTYPE_MPEG_SURROUND = 3, | |
93 | AUDIO_CODING_XTYPE_FIRST_RESERVED = 4, | |
94 | }; | |
95 | ||
96 | static char *cea_audio_coding_type_names[] = { | |
97 | /* 0 */ "undefined", | |
98 | /* 1 */ "LPCM", | |
99 | /* 2 */ "AC-3", | |
100 | /* 3 */ "MPEG1", | |
101 | /* 4 */ "MP3", | |
102 | /* 5 */ "MPEG2", | |
103 | /* 6 */ "AAC-LC", | |
104 | /* 7 */ "DTS", | |
105 | /* 8 */ "ATRAC", | |
06f69d17 | 106 | /* 9 */ "DSD (One Bit Audio)", |
7f4a9f43 WF |
107 | /* 10 */ "E-AC-3/DD+ (Dolby Digital Plus)", |
108 | /* 11 */ "DTS-HD", | |
109 | /* 12 */ "MLP (Dolby TrueHD)", | |
110 | /* 13 */ "DST", | |
111 | /* 14 */ "WMAPro", | |
112 | /* 15 */ "HE-AAC", | |
113 | /* 16 */ "HE-AACv2", | |
114 | /* 17 */ "MPEG Surround", | |
115 | }; | |
116 | ||
117 | /* | |
118 | * The following two lists are shared between | |
119 | * - HDMI audio InfoFrame (source to sink) | |
4e19c58f | 120 | * - CEA E-EDID Extension (sink to source) |
7f4a9f43 WF |
121 | */ |
122 | ||
123 | /* | |
124 | * SS1:SS0 index => sample size | |
125 | */ | |
126 | static int cea_sample_sizes[4] = { | |
127 | 0, /* 0: Refer to Stream Header */ | |
128 | AC_SUPPCM_BITS_16, /* 1: 16 bits */ | |
129 | AC_SUPPCM_BITS_20, /* 2: 20 bits */ | |
130 | AC_SUPPCM_BITS_24, /* 3: 24 bits */ | |
131 | }; | |
132 | ||
133 | /* | |
134 | * SF2:SF1:SF0 index => sampling frequency | |
135 | */ | |
136 | static int cea_sampling_frequencies[8] = { | |
137 | 0, /* 0: Refer to Stream Header */ | |
138 | SNDRV_PCM_RATE_32000, /* 1: 32000Hz */ | |
139 | SNDRV_PCM_RATE_44100, /* 2: 44100Hz */ | |
140 | SNDRV_PCM_RATE_48000, /* 3: 48000Hz */ | |
141 | SNDRV_PCM_RATE_88200, /* 4: 88200Hz */ | |
142 | SNDRV_PCM_RATE_96000, /* 5: 96000Hz */ | |
143 | SNDRV_PCM_RATE_176400, /* 6: 176400Hz */ | |
144 | SNDRV_PCM_RATE_192000, /* 7: 192000Hz */ | |
145 | }; | |
146 | ||
b6acf013 | 147 | static unsigned int hdmi_get_eld_data(struct hda_codec *codec, hda_nid_t nid, |
7f4a9f43 WF |
148 | int byte_index) |
149 | { | |
150 | unsigned int val; | |
151 | ||
152 | val = snd_hda_codec_read(codec, nid, 0, | |
153 | AC_VERB_GET_HDMI_ELDD, byte_index); | |
7f4a9f43 | 154 | #ifdef BE_PARANOID |
03284c8f | 155 | printk(KERN_INFO "HDMI: ELD data byte %d: 0x%x\n", byte_index, val); |
7f4a9f43 | 156 | #endif |
b6acf013 | 157 | return val; |
7f4a9f43 WF |
158 | } |
159 | ||
160 | #define GRAB_BITS(buf, byte, lowbit, bits) \ | |
161 | ({ \ | |
162 | BUILD_BUG_ON(lowbit > 7); \ | |
163 | BUILD_BUG_ON(bits > 8); \ | |
164 | BUILD_BUG_ON(bits <= 0); \ | |
165 | \ | |
166 | (buf[byte] >> (lowbit)) & ((1 << (bits)) - 1); \ | |
167 | }) | |
168 | ||
169 | static void hdmi_update_short_audio_desc(struct cea_sad *a, | |
170 | const unsigned char *buf) | |
171 | { | |
172 | int i; | |
173 | int val; | |
174 | ||
175 | val = GRAB_BITS(buf, 1, 0, 7); | |
176 | a->rates = 0; | |
177 | for (i = 0; i < 7; i++) | |
178 | if (val & (1 << i)) | |
179 | a->rates |= cea_sampling_frequencies[i + 1]; | |
180 | ||
181 | a->channels = GRAB_BITS(buf, 0, 0, 3); | |
182 | a->channels++; | |
183 | ||
0bbaee3a AH |
184 | a->sample_bits = 0; |
185 | a->max_bitrate = 0; | |
186 | ||
7f4a9f43 WF |
187 | a->format = GRAB_BITS(buf, 0, 3, 4); |
188 | switch (a->format) { | |
189 | case AUDIO_CODING_TYPE_REF_STREAM_HEADER: | |
190 | snd_printd(KERN_INFO | |
03284c8f | 191 | "HDMI: audio coding type 0 not expected\n"); |
7f4a9f43 WF |
192 | break; |
193 | ||
194 | case AUDIO_CODING_TYPE_LPCM: | |
195 | val = GRAB_BITS(buf, 2, 0, 3); | |
7f4a9f43 WF |
196 | for (i = 0; i < 3; i++) |
197 | if (val & (1 << i)) | |
198 | a->sample_bits |= cea_sample_sizes[i + 1]; | |
199 | break; | |
200 | ||
201 | case AUDIO_CODING_TYPE_AC3: | |
202 | case AUDIO_CODING_TYPE_MPEG1: | |
203 | case AUDIO_CODING_TYPE_MP3: | |
204 | case AUDIO_CODING_TYPE_MPEG2: | |
205 | case AUDIO_CODING_TYPE_AACLC: | |
206 | case AUDIO_CODING_TYPE_DTS: | |
207 | case AUDIO_CODING_TYPE_ATRAC: | |
208 | a->max_bitrate = GRAB_BITS(buf, 2, 0, 8); | |
209 | a->max_bitrate *= 8000; | |
210 | break; | |
211 | ||
212 | case AUDIO_CODING_TYPE_SACD: | |
213 | break; | |
214 | ||
215 | case AUDIO_CODING_TYPE_EAC3: | |
216 | break; | |
217 | ||
218 | case AUDIO_CODING_TYPE_DTS_HD: | |
219 | break; | |
220 | ||
221 | case AUDIO_CODING_TYPE_MLP: | |
222 | break; | |
223 | ||
224 | case AUDIO_CODING_TYPE_DST: | |
225 | break; | |
226 | ||
227 | case AUDIO_CODING_TYPE_WMAPRO: | |
228 | a->profile = GRAB_BITS(buf, 2, 0, 3); | |
229 | break; | |
230 | ||
231 | case AUDIO_CODING_TYPE_REF_CXT: | |
232 | a->format = GRAB_BITS(buf, 2, 3, 5); | |
233 | if (a->format == AUDIO_CODING_XTYPE_HE_REF_CT || | |
234 | a->format >= AUDIO_CODING_XTYPE_FIRST_RESERVED) { | |
235 | snd_printd(KERN_INFO | |
03284c8f | 236 | "HDMI: audio coding xtype %d not expected\n", |
7f4a9f43 WF |
237 | a->format); |
238 | a->format = 0; | |
239 | } else | |
240 | a->format += AUDIO_CODING_TYPE_HE_AAC - | |
241 | AUDIO_CODING_XTYPE_HE_AAC; | |
242 | break; | |
243 | } | |
244 | } | |
245 | ||
246 | /* | |
247 | * Be careful, ELD buf could be totally rubbish! | |
248 | */ | |
1613d6b4 DH |
249 | int snd_hdmi_parse_eld(struct parsed_hdmi_eld *e, |
250 | const unsigned char *buf, int size) | |
7f4a9f43 WF |
251 | { |
252 | int mnl; | |
253 | int i; | |
254 | ||
255 | e->eld_ver = GRAB_BITS(buf, 0, 3, 5); | |
256 | if (e->eld_ver != ELD_VER_CEA_861D && | |
257 | e->eld_ver != ELD_VER_PARTIAL) { | |
03284c8f WF |
258 | snd_printd(KERN_INFO "HDMI: Unknown ELD version %d\n", |
259 | e->eld_ver); | |
7f4a9f43 WF |
260 | goto out_fail; |
261 | } | |
262 | ||
7f4a9f43 WF |
263 | e->baseline_len = GRAB_BITS(buf, 2, 0, 8); |
264 | mnl = GRAB_BITS(buf, 4, 0, 5); | |
265 | e->cea_edid_ver = GRAB_BITS(buf, 4, 5, 3); | |
266 | ||
267 | e->support_hdcp = GRAB_BITS(buf, 5, 0, 1); | |
268 | e->support_ai = GRAB_BITS(buf, 5, 1, 1); | |
269 | e->conn_type = GRAB_BITS(buf, 5, 2, 2); | |
270 | e->sad_count = GRAB_BITS(buf, 5, 4, 4); | |
271 | ||
272 | e->aud_synch_delay = GRAB_BITS(buf, 6, 0, 8) * 2; | |
273 | e->spk_alloc = GRAB_BITS(buf, 7, 0, 7); | |
274 | ||
275 | e->port_id = get_unaligned_le64(buf + 8); | |
276 | ||
277 | /* not specified, but the spec's tendency is little endian */ | |
278 | e->manufacture_id = get_unaligned_le16(buf + 16); | |
279 | e->product_id = get_unaligned_le16(buf + 18); | |
280 | ||
281 | if (mnl > ELD_MAX_MNL) { | |
03284c8f | 282 | snd_printd(KERN_INFO "HDMI: MNL is reserved value %d\n", mnl); |
7f4a9f43 WF |
283 | goto out_fail; |
284 | } else if (ELD_FIXED_BYTES + mnl > size) { | |
03284c8f | 285 | snd_printd(KERN_INFO "HDMI: out of range MNL %d\n", mnl); |
7f4a9f43 WF |
286 | goto out_fail; |
287 | } else | |
f5b2d0ef | 288 | strlcpy(e->monitor_name, buf + ELD_FIXED_BYTES, mnl + 1); |
7f4a9f43 WF |
289 | |
290 | for (i = 0; i < e->sad_count; i++) { | |
291 | if (ELD_FIXED_BYTES + mnl + 3 * (i + 1) > size) { | |
03284c8f | 292 | snd_printd(KERN_INFO "HDMI: out of range SAD %d\n", i); |
7f4a9f43 WF |
293 | goto out_fail; |
294 | } | |
295 | hdmi_update_short_audio_desc(e->sad + i, | |
296 | buf + ELD_FIXED_BYTES + mnl + 3 * i); | |
297 | } | |
298 | ||
2d1b439b WF |
299 | /* |
300 | * HDMI sink's ELD info cannot always be retrieved for now, e.g. | |
301 | * in console or for audio devices. Assume the highest speakers | |
302 | * configuration, to _not_ prohibit multi-channel audio playback. | |
303 | */ | |
304 | if (!e->spk_alloc) | |
305 | e->spk_alloc = 0xffff; | |
306 | ||
7f4a9f43 WF |
307 | return 0; |
308 | ||
309 | out_fail: | |
7f4a9f43 WF |
310 | return -EINVAL; |
311 | } | |
312 | ||
7f4a9f43 WF |
313 | int snd_hdmi_get_eld_size(struct hda_codec *codec, hda_nid_t nid) |
314 | { | |
315 | return snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_HDMI_DIP_SIZE, | |
316 | AC_DIPSIZE_ELD_BUF); | |
317 | } | |
318 | ||
1613d6b4 DH |
319 | int snd_hdmi_get_eld(struct hda_codec *codec, hda_nid_t nid, |
320 | unsigned char *buf, int *eld_size) | |
7f4a9f43 WF |
321 | { |
322 | int i; | |
2ef5692e | 323 | int ret = 0; |
7f4a9f43 | 324 | int size; |
7f4a9f43 | 325 | |
14bc52b8 PLB |
326 | /* |
327 | * ELD size is initialized to zero in caller function. If no errors and | |
1613d6b4 | 328 | * ELD is valid, actual eld_size is assigned. |
14bc52b8 PLB |
329 | */ |
330 | ||
7f4a9f43 WF |
331 | size = snd_hdmi_get_eld_size(codec, nid); |
332 | if (size == 0) { | |
333 | /* wfg: workaround for ASUS P5E-VM HDMI board */ | |
03284c8f | 334 | snd_printd(KERN_INFO "HDMI: ELD buf size is 0, force 128\n"); |
7f4a9f43 WF |
335 | size = 128; |
336 | } | |
14bc52b8 | 337 | if (size < ELD_FIXED_BYTES || size > ELD_MAX_SIZE) { |
03284c8f | 338 | snd_printd(KERN_INFO "HDMI: invalid ELD buf size %d\n", size); |
7f4a9f43 WF |
339 | return -ERANGE; |
340 | } | |
341 | ||
14bc52b8 | 342 | /* set ELD buffer */ |
b6acf013 TI |
343 | for (i = 0; i < size; i++) { |
344 | unsigned int val = hdmi_get_eld_data(codec, nid, i); | |
a370fc62 WF |
345 | /* |
346 | * Graphics driver might be writing to ELD buffer right now. | |
347 | * Just abort. The caller will repoll after a while. | |
348 | */ | |
b6acf013 | 349 | if (!(val & AC_ELDD_ELD_VALID)) { |
b6acf013 TI |
350 | snd_printd(KERN_INFO |
351 | "HDMI: invalid ELD data byte %d\n", i); | |
a370fc62 WF |
352 | ret = -EINVAL; |
353 | goto error; | |
354 | } | |
355 | val &= AC_ELDD_ELD_DATA; | |
356 | /* | |
357 | * The first byte cannot be zero. This can happen on some DVI | |
358 | * connections. Some Intel chips may also need some 250ms delay | |
359 | * to return non-zero ELD data, even when the graphics driver | |
360 | * correctly writes ELD content before setting ELD_valid bit. | |
361 | */ | |
362 | if (!val && !i) { | |
363 | snd_printdd(KERN_INFO "HDMI: 0 ELD data\n"); | |
364 | ret = -EINVAL; | |
365 | goto error; | |
366 | } | |
b6acf013 TI |
367 | buf[i] = val; |
368 | } | |
7f4a9f43 | 369 | |
1613d6b4 | 370 | *eld_size = size; |
b6acf013 | 371 | error: |
7f4a9f43 WF |
372 | return ret; |
373 | } | |
374 | ||
af65cbf2 PLB |
375 | /** |
376 | * SNDRV_PCM_RATE_* and AC_PAR_PCM values don't match, print correct rates with | |
377 | * hdmi-specific routine. | |
378 | */ | |
379 | static void hdmi_print_pcm_rates(int pcm, char *buf, int buflen) | |
380 | { | |
381 | static unsigned int alsa_rates[] = { | |
25dc16f6 AH |
382 | 5512, 8000, 11025, 16000, 22050, 32000, 44100, 48000, 64000, |
383 | 88200, 96000, 176400, 192000, 384000 | |
af65cbf2 PLB |
384 | }; |
385 | int i, j; | |
386 | ||
387 | for (i = 0, j = 0; i < ARRAY_SIZE(alsa_rates); i++) | |
388 | if (pcm & (1 << i)) | |
389 | j += snprintf(buf + j, buflen - j, " %d", | |
390 | alsa_rates[i]); | |
391 | ||
392 | buf[j] = '\0'; /* necessary when j == 0 */ | |
393 | } | |
394 | ||
f71ff0d7 TI |
395 | #define SND_PRINT_RATES_ADVISED_BUFSIZE 80 |
396 | ||
7f4a9f43 WF |
397 | static void hdmi_show_short_audio_desc(struct cea_sad *a) |
398 | { | |
399 | char buf[SND_PRINT_RATES_ADVISED_BUFSIZE]; | |
ae8cb4ca | 400 | char buf2[8 + SND_PRINT_BITS_ADVISED_BUFSIZE] = ", bits ="; |
7f4a9f43 | 401 | |
ae8cb4ca WF |
402 | if (!a->format) |
403 | return; | |
7f4a9f43 | 404 | |
af65cbf2 | 405 | hdmi_print_pcm_rates(a->rates, buf, sizeof(buf)); |
7f4a9f43 WF |
406 | |
407 | if (a->format == AUDIO_CODING_TYPE_LPCM) | |
d757534e | 408 | snd_print_pcm_bits(a->sample_bits, buf2 + 8, sizeof(buf2) - 8); |
ae8cb4ca WF |
409 | else if (a->max_bitrate) |
410 | snprintf(buf2, sizeof(buf2), | |
411 | ", max bitrate = %d", a->max_bitrate); | |
412 | else | |
413 | buf2[0] = '\0'; | |
414 | ||
fae3d88a | 415 | _snd_printd(SND_PR_VERBOSE, "HDMI: supports coding type %s:" |
ae8cb4ca WF |
416 | " channels = %d, rates =%s%s\n", |
417 | cea_audio_coding_type_names[a->format], | |
418 | a->channels, | |
419 | buf, | |
420 | buf2); | |
7f4a9f43 WF |
421 | } |
422 | ||
903b21d8 | 423 | void snd_print_channel_allocation(int spk_alloc, char *buf, int buflen) |
7f4a9f43 WF |
424 | { |
425 | int i, j; | |
426 | ||
427 | for (i = 0, j = 0; i < ARRAY_SIZE(cea_speaker_allocation_names); i++) { | |
428 | if (spk_alloc & (1 << i)) | |
06f69d17 | 429 | j += snprintf(buf + j, buflen - j, " %s", |
7f4a9f43 WF |
430 | cea_speaker_allocation_names[i]); |
431 | } | |
7f4a9f43 WF |
432 | buf[j] = '\0'; /* necessary when j == 0 */ |
433 | } | |
434 | ||
1613d6b4 | 435 | void snd_hdmi_show_eld(struct parsed_hdmi_eld *e) |
7f4a9f43 WF |
436 | { |
437 | int i; | |
ae8cb4ca | 438 | |
fae3d88a | 439 | _snd_printd(SND_PR_VERBOSE, "HDMI: detected monitor %s at connection type %s\n", |
ae8cb4ca WF |
440 | e->monitor_name, |
441 | eld_connection_type_names[e->conn_type]); | |
442 | ||
443 | if (e->spk_alloc) { | |
444 | char buf[SND_PRINT_CHANNEL_ALLOCATION_ADVISED_BUFSIZE]; | |
445 | snd_print_channel_allocation(e->spk_alloc, buf, sizeof(buf)); | |
fae3d88a | 446 | _snd_printd(SND_PR_VERBOSE, "HDMI: available speakers:%s\n", buf); |
ae8cb4ca | 447 | } |
7f4a9f43 WF |
448 | |
449 | for (i = 0; i < e->sad_count; i++) | |
450 | hdmi_show_short_audio_desc(e->sad + i); | |
451 | } | |
5f1e71b1 WF |
452 | |
453 | #ifdef CONFIG_PROC_FS | |
454 | ||
455 | static void hdmi_print_sad_info(int i, struct cea_sad *a, | |
456 | struct snd_info_buffer *buffer) | |
457 | { | |
d39b4352 | 458 | char buf[SND_PRINT_RATES_ADVISED_BUFSIZE]; |
5f1e71b1 WF |
459 | |
460 | snd_iprintf(buffer, "sad%d_coding_type\t[0x%x] %s\n", | |
461 | i, a->format, cea_audio_coding_type_names[a->format]); | |
462 | snd_iprintf(buffer, "sad%d_channels\t\t%d\n", i, a->channels); | |
463 | ||
af65cbf2 | 464 | hdmi_print_pcm_rates(a->rates, buf, sizeof(buf)); |
06f69d17 | 465 | snd_iprintf(buffer, "sad%d_rates\t\t[0x%x]%s\n", i, a->rates, buf); |
5f1e71b1 | 466 | |
d39b4352 WF |
467 | if (a->format == AUDIO_CODING_TYPE_LPCM) { |
468 | snd_print_pcm_bits(a->sample_bits, buf, sizeof(buf)); | |
469 | snd_iprintf(buffer, "sad%d_bits\t\t[0x%x]%s\n", | |
470 | i, a->sample_bits, buf); | |
471 | } | |
5f1e71b1 WF |
472 | |
473 | if (a->max_bitrate) | |
474 | snd_iprintf(buffer, "sad%d_max_bitrate\t%d\n", | |
475 | i, a->max_bitrate); | |
476 | ||
477 | if (a->profile) | |
478 | snd_iprintf(buffer, "sad%d_profile\t\t%d\n", i, a->profile); | |
479 | } | |
480 | ||
481 | static void hdmi_print_eld_info(struct snd_info_entry *entry, | |
482 | struct snd_info_buffer *buffer) | |
483 | { | |
1613d6b4 DH |
484 | struct hdmi_eld *eld = entry->private_data; |
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 | |
4bd038f9 | 503 | mutex_lock(&eld->lock); |
1613d6b4 DH |
504 | snd_iprintf(buffer, "monitor_present\t\t%d\n", eld->monitor_present); |
505 | snd_iprintf(buffer, "eld_valid\t\t%d\n", eld->eld_valid); | |
4bd038f9 DH |
506 | if (!eld->eld_valid) { |
507 | mutex_unlock(&eld->lock); | |
5d44f927 | 508 | return; |
4bd038f9 | 509 | } |
db742104 | 510 | snd_iprintf(buffer, "monitor_name\t\t%s\n", e->monitor_name); |
5f1e71b1 WF |
511 | snd_iprintf(buffer, "connection_type\t\t%s\n", |
512 | eld_connection_type_names[e->conn_type]); | |
513 | snd_iprintf(buffer, "eld_version\t\t[0x%x] %s\n", e->eld_ver, | |
1613d6b4 | 514 | eld_version_names[e->eld_ver]); |
5f1e71b1 WF |
515 | snd_iprintf(buffer, "edid_version\t\t[0x%x] %s\n", e->cea_edid_ver, |
516 | cea_edid_version_names[e->cea_edid_ver]); | |
517 | snd_iprintf(buffer, "manufacture_id\t\t0x%x\n", e->manufacture_id); | |
518 | snd_iprintf(buffer, "product_id\t\t0x%x\n", e->product_id); | |
519 | snd_iprintf(buffer, "port_id\t\t\t0x%llx\n", (long long)e->port_id); | |
520 | snd_iprintf(buffer, "support_hdcp\t\t%d\n", e->support_hdcp); | |
521 | snd_iprintf(buffer, "support_ai\t\t%d\n", e->support_ai); | |
522 | snd_iprintf(buffer, "audio_sync_delay\t%d\n", e->aud_synch_delay); | |
523 | ||
903b21d8 | 524 | snd_print_channel_allocation(e->spk_alloc, buf, sizeof(buf)); |
06f69d17 | 525 | snd_iprintf(buffer, "speakers\t\t[0x%x]%s\n", e->spk_alloc, buf); |
5f1e71b1 WF |
526 | |
527 | snd_iprintf(buffer, "sad_count\t\t%d\n", e->sad_count); | |
528 | ||
529 | for (i = 0; i < e->sad_count; i++) | |
530 | hdmi_print_sad_info(i, e->sad + i, buffer); | |
4bd038f9 | 531 | mutex_unlock(&eld->lock); |
5f1e71b1 WF |
532 | } |
533 | ||
acb05993 | 534 | static void hdmi_write_eld_info(struct snd_info_entry *entry, |
acdda791 WF |
535 | struct snd_info_buffer *buffer) |
536 | { | |
1613d6b4 DH |
537 | struct hdmi_eld *eld = entry->private_data; |
538 | struct parsed_hdmi_eld *e = &eld->info; | |
acdda791 WF |
539 | char line[64]; |
540 | char name[64]; | |
541 | char *sname; | |
542 | long long val; | |
78735cff | 543 | unsigned int n; |
acdda791 | 544 | |
4bd038f9 | 545 | mutex_lock(&eld->lock); |
acdda791 WF |
546 | while (!snd_info_get_line(buffer, line, sizeof(line))) { |
547 | if (sscanf(line, "%s %llx", name, &val) != 2) | |
548 | continue; | |
acb05993 WF |
549 | /* |
550 | * We don't allow modification to these fields: | |
551 | * monitor_name manufacture_id product_id | |
552 | * eld_version edid_version | |
553 | */ | |
23ccc2bd | 554 | if (!strcmp(name, "monitor_present")) |
1613d6b4 | 555 | eld->monitor_present = val; |
23ccc2bd | 556 | else if (!strcmp(name, "eld_valid")) |
1613d6b4 | 557 | eld->eld_valid = val; |
23ccc2bd | 558 | else if (!strcmp(name, "connection_type")) |
acdda791 WF |
559 | e->conn_type = val; |
560 | else if (!strcmp(name, "port_id")) | |
561 | e->port_id = val; | |
562 | else if (!strcmp(name, "support_hdcp")) | |
563 | e->support_hdcp = val; | |
564 | else if (!strcmp(name, "support_ai")) | |
565 | e->support_ai = val; | |
566 | else if (!strcmp(name, "audio_sync_delay")) | |
567 | e->aud_synch_delay = val; | |
568 | else if (!strcmp(name, "speakers")) | |
569 | e->spk_alloc = val; | |
570 | else if (!strcmp(name, "sad_count")) | |
571 | e->sad_count = val; | |
572 | else if (!strncmp(name, "sad", 3)) { | |
573 | sname = name + 4; | |
574 | n = name[3] - '0'; | |
575 | if (name[4] >= '0' && name[4] <= '9') { | |
576 | sname++; | |
577 | n = 10 * n + name[4] - '0'; | |
578 | } | |
78735cff | 579 | if (n >= ELD_MAX_SAD) |
acdda791 WF |
580 | continue; |
581 | if (!strcmp(sname, "_coding_type")) | |
582 | e->sad[n].format = val; | |
583 | else if (!strcmp(sname, "_channels")) | |
584 | e->sad[n].channels = val; | |
585 | else if (!strcmp(sname, "_rates")) | |
586 | e->sad[n].rates = val; | |
587 | else if (!strcmp(sname, "_bits")) | |
588 | e->sad[n].sample_bits = val; | |
589 | else if (!strcmp(sname, "_max_bitrate")) | |
590 | e->sad[n].max_bitrate = val; | |
acb05993 WF |
591 | else if (!strcmp(sname, "_profile")) |
592 | e->sad[n].profile = val; | |
acdda791 WF |
593 | if (n >= e->sad_count) |
594 | e->sad_count = n + 1; | |
595 | } | |
596 | } | |
4bd038f9 | 597 | mutex_unlock(&eld->lock); |
acdda791 WF |
598 | } |
599 | ||
600 | ||
54a25f87 WF |
601 | int snd_hda_eld_proc_new(struct hda_codec *codec, struct hdmi_eld *eld, |
602 | int index) | |
5f1e71b1 WF |
603 | { |
604 | char name[32]; | |
605 | struct snd_info_entry *entry; | |
606 | int err; | |
607 | ||
54a25f87 | 608 | snprintf(name, sizeof(name), "eld#%d.%d", codec->addr, index); |
5f1e71b1 WF |
609 | err = snd_card_proc_new(codec->bus->card, name, &entry); |
610 | if (err < 0) | |
611 | return err; | |
612 | ||
613 | snd_info_set_text_ops(entry, eld, hdmi_print_eld_info); | |
acb05993 | 614 | entry->c.text.write = hdmi_write_eld_info; |
acdda791 | 615 | entry->mode |= S_IWUSR; |
f208dba9 | 616 | eld->proc_entry = entry; |
acdda791 | 617 | |
5f1e71b1 WF |
618 | return 0; |
619 | } | |
620 | ||
f208dba9 TI |
621 | void snd_hda_eld_proc_free(struct hda_codec *codec, struct hdmi_eld *eld) |
622 | { | |
623 | if (!codec->bus->shutdown && eld->proc_entry) { | |
624 | snd_device_free(codec->bus->card, eld->proc_entry); | |
625 | eld->proc_entry = NULL; | |
626 | } | |
627 | } | |
628 | ||
274714f5 TI |
629 | #endif /* CONFIG_PROC_FS */ |
630 | ||
bbbe3390 | 631 | /* update PCM info based on ELD */ |
1613d6b4 | 632 | void snd_hdmi_eld_update_pcm_info(struct parsed_hdmi_eld *e, |
2def8172 | 633 | struct hda_pcm_stream *hinfo) |
bbbe3390 | 634 | { |
2def8172 SW |
635 | u32 rates; |
636 | u64 formats; | |
637 | unsigned int maxbps; | |
638 | unsigned int channels_max; | |
bbbe3390 TI |
639 | int i; |
640 | ||
3dc86429 AH |
641 | /* assume basic audio support (the basic audio flag is not in ELD; |
642 | * however, all audio capable sinks are required to support basic | |
643 | * audio) */ | |
2def8172 SW |
644 | rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | |
645 | SNDRV_PCM_RATE_48000; | |
646 | formats = SNDRV_PCM_FMTBIT_S16_LE; | |
647 | maxbps = 16; | |
648 | channels_max = 2; | |
1613d6b4 DH |
649 | for (i = 0; i < e->sad_count; i++) { |
650 | struct cea_sad *a = &e->sad[i]; | |
2def8172 SW |
651 | rates |= a->rates; |
652 | if (a->channels > channels_max) | |
653 | channels_max = a->channels; | |
bbbe3390 | 654 | if (a->format == AUDIO_CODING_TYPE_LPCM) { |
bbbe3390 | 655 | if (a->sample_bits & AC_SUPPCM_BITS_20) { |
2def8172 SW |
656 | formats |= SNDRV_PCM_FMTBIT_S32_LE; |
657 | if (maxbps < 20) | |
658 | maxbps = 20; | |
bbbe3390 TI |
659 | } |
660 | if (a->sample_bits & AC_SUPPCM_BITS_24) { | |
2def8172 SW |
661 | formats |= SNDRV_PCM_FMTBIT_S32_LE; |
662 | if (maxbps < 24) | |
663 | maxbps = 24; | |
bbbe3390 TI |
664 | } |
665 | } | |
666 | } | |
667 | ||
bbbe3390 | 668 | /* restrict the parameters by the values the codec provides */ |
2def8172 SW |
669 | hinfo->rates &= rates; |
670 | hinfo->formats &= formats; | |
671 | hinfo->maxbps = min(hinfo->maxbps, maxbps); | |
672 | hinfo->channels_max = min(hinfo->channels_max, channels_max); | |
bbbe3390 | 673 | } |