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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 | ||
147 | static unsigned char hdmi_get_eld_byte(struct hda_codec *codec, hda_nid_t nid, | |
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); | |
154 | ||
155 | #ifdef BE_PARANOID | |
03284c8f | 156 | printk(KERN_INFO "HDMI: ELD data byte %d: 0x%x\n", byte_index, val); |
7f4a9f43 WF |
157 | #endif |
158 | ||
159 | if ((val & AC_ELDD_ELD_VALID) == 0) { | |
03284c8f | 160 | snd_printd(KERN_INFO "HDMI: invalid ELD data byte %d\n", |
7f4a9f43 WF |
161 | byte_index); |
162 | val = 0; | |
163 | } | |
164 | ||
165 | return val & AC_ELDD_ELD_DATA; | |
166 | } | |
167 | ||
168 | #define GRAB_BITS(buf, byte, lowbit, bits) \ | |
169 | ({ \ | |
170 | BUILD_BUG_ON(lowbit > 7); \ | |
171 | BUILD_BUG_ON(bits > 8); \ | |
172 | BUILD_BUG_ON(bits <= 0); \ | |
173 | \ | |
174 | (buf[byte] >> (lowbit)) & ((1 << (bits)) - 1); \ | |
175 | }) | |
176 | ||
177 | static void hdmi_update_short_audio_desc(struct cea_sad *a, | |
178 | const unsigned char *buf) | |
179 | { | |
180 | int i; | |
181 | int val; | |
182 | ||
183 | val = GRAB_BITS(buf, 1, 0, 7); | |
184 | a->rates = 0; | |
185 | for (i = 0; i < 7; i++) | |
186 | if (val & (1 << i)) | |
187 | a->rates |= cea_sampling_frequencies[i + 1]; | |
188 | ||
189 | a->channels = GRAB_BITS(buf, 0, 0, 3); | |
190 | a->channels++; | |
191 | ||
0bbaee3a AH |
192 | a->sample_bits = 0; |
193 | a->max_bitrate = 0; | |
194 | ||
7f4a9f43 WF |
195 | a->format = GRAB_BITS(buf, 0, 3, 4); |
196 | switch (a->format) { | |
197 | case AUDIO_CODING_TYPE_REF_STREAM_HEADER: | |
198 | snd_printd(KERN_INFO | |
03284c8f | 199 | "HDMI: audio coding type 0 not expected\n"); |
7f4a9f43 WF |
200 | break; |
201 | ||
202 | case AUDIO_CODING_TYPE_LPCM: | |
203 | val = GRAB_BITS(buf, 2, 0, 3); | |
7f4a9f43 WF |
204 | for (i = 0; i < 3; i++) |
205 | if (val & (1 << i)) | |
206 | a->sample_bits |= cea_sample_sizes[i + 1]; | |
207 | break; | |
208 | ||
209 | case AUDIO_CODING_TYPE_AC3: | |
210 | case AUDIO_CODING_TYPE_MPEG1: | |
211 | case AUDIO_CODING_TYPE_MP3: | |
212 | case AUDIO_CODING_TYPE_MPEG2: | |
213 | case AUDIO_CODING_TYPE_AACLC: | |
214 | case AUDIO_CODING_TYPE_DTS: | |
215 | case AUDIO_CODING_TYPE_ATRAC: | |
216 | a->max_bitrate = GRAB_BITS(buf, 2, 0, 8); | |
217 | a->max_bitrate *= 8000; | |
218 | break; | |
219 | ||
220 | case AUDIO_CODING_TYPE_SACD: | |
221 | break; | |
222 | ||
223 | case AUDIO_CODING_TYPE_EAC3: | |
224 | break; | |
225 | ||
226 | case AUDIO_CODING_TYPE_DTS_HD: | |
227 | break; | |
228 | ||
229 | case AUDIO_CODING_TYPE_MLP: | |
230 | break; | |
231 | ||
232 | case AUDIO_CODING_TYPE_DST: | |
233 | break; | |
234 | ||
235 | case AUDIO_CODING_TYPE_WMAPRO: | |
236 | a->profile = GRAB_BITS(buf, 2, 0, 3); | |
237 | break; | |
238 | ||
239 | case AUDIO_CODING_TYPE_REF_CXT: | |
240 | a->format = GRAB_BITS(buf, 2, 3, 5); | |
241 | if (a->format == AUDIO_CODING_XTYPE_HE_REF_CT || | |
242 | a->format >= AUDIO_CODING_XTYPE_FIRST_RESERVED) { | |
243 | snd_printd(KERN_INFO | |
03284c8f | 244 | "HDMI: audio coding xtype %d not expected\n", |
7f4a9f43 WF |
245 | a->format); |
246 | a->format = 0; | |
247 | } else | |
248 | a->format += AUDIO_CODING_TYPE_HE_AAC - | |
249 | AUDIO_CODING_XTYPE_HE_AAC; | |
250 | break; | |
251 | } | |
252 | } | |
253 | ||
254 | /* | |
255 | * Be careful, ELD buf could be totally rubbish! | |
256 | */ | |
5b87ebb7 WF |
257 | static int hdmi_update_eld(struct hdmi_eld *e, |
258 | const unsigned char *buf, int size) | |
7f4a9f43 WF |
259 | { |
260 | int mnl; | |
261 | int i; | |
262 | ||
263 | e->eld_ver = GRAB_BITS(buf, 0, 3, 5); | |
264 | if (e->eld_ver != ELD_VER_CEA_861D && | |
265 | e->eld_ver != ELD_VER_PARTIAL) { | |
03284c8f WF |
266 | snd_printd(KERN_INFO "HDMI: Unknown ELD version %d\n", |
267 | e->eld_ver); | |
7f4a9f43 WF |
268 | goto out_fail; |
269 | } | |
270 | ||
271 | e->eld_size = size; | |
272 | e->baseline_len = GRAB_BITS(buf, 2, 0, 8); | |
273 | mnl = GRAB_BITS(buf, 4, 0, 5); | |
274 | e->cea_edid_ver = GRAB_BITS(buf, 4, 5, 3); | |
275 | ||
276 | e->support_hdcp = GRAB_BITS(buf, 5, 0, 1); | |
277 | e->support_ai = GRAB_BITS(buf, 5, 1, 1); | |
278 | e->conn_type = GRAB_BITS(buf, 5, 2, 2); | |
279 | e->sad_count = GRAB_BITS(buf, 5, 4, 4); | |
280 | ||
281 | e->aud_synch_delay = GRAB_BITS(buf, 6, 0, 8) * 2; | |
282 | e->spk_alloc = GRAB_BITS(buf, 7, 0, 7); | |
283 | ||
284 | e->port_id = get_unaligned_le64(buf + 8); | |
285 | ||
286 | /* not specified, but the spec's tendency is little endian */ | |
287 | e->manufacture_id = get_unaligned_le16(buf + 16); | |
288 | e->product_id = get_unaligned_le16(buf + 18); | |
289 | ||
290 | if (mnl > ELD_MAX_MNL) { | |
03284c8f | 291 | snd_printd(KERN_INFO "HDMI: MNL is reserved value %d\n", mnl); |
7f4a9f43 WF |
292 | goto out_fail; |
293 | } else if (ELD_FIXED_BYTES + mnl > size) { | |
03284c8f | 294 | snd_printd(KERN_INFO "HDMI: out of range MNL %d\n", mnl); |
7f4a9f43 WF |
295 | goto out_fail; |
296 | } else | |
297 | strlcpy(e->monitor_name, buf + ELD_FIXED_BYTES, mnl); | |
298 | ||
299 | for (i = 0; i < e->sad_count; i++) { | |
300 | if (ELD_FIXED_BYTES + mnl + 3 * (i + 1) > size) { | |
03284c8f | 301 | snd_printd(KERN_INFO "HDMI: out of range SAD %d\n", i); |
7f4a9f43 WF |
302 | goto out_fail; |
303 | } | |
304 | hdmi_update_short_audio_desc(e->sad + i, | |
305 | buf + ELD_FIXED_BYTES + mnl + 3 * i); | |
306 | } | |
307 | ||
308 | return 0; | |
309 | ||
310 | out_fail: | |
311 | e->eld_ver = 0; | |
312 | return -EINVAL; | |
313 | } | |
314 | ||
7f4a9f43 WF |
315 | int snd_hdmi_get_eld_size(struct hda_codec *codec, hda_nid_t nid) |
316 | { | |
317 | return snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_HDMI_DIP_SIZE, | |
318 | AC_DIPSIZE_ELD_BUF); | |
319 | } | |
320 | ||
5b87ebb7 | 321 | int snd_hdmi_get_eld(struct hdmi_eld *eld, |
7f4a9f43 WF |
322 | struct hda_codec *codec, hda_nid_t nid) |
323 | { | |
324 | int i; | |
325 | int ret; | |
326 | int size; | |
327 | unsigned char *buf; | |
328 | ||
5d44f927 | 329 | if (!eld->eld_valid) |
7f4a9f43 WF |
330 | return -ENOENT; |
331 | ||
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 | } | |
338 | if (size < ELD_FIXED_BYTES || size > PAGE_SIZE) { | |
03284c8f | 339 | snd_printd(KERN_INFO "HDMI: invalid ELD buf size %d\n", size); |
7f4a9f43 WF |
340 | return -ERANGE; |
341 | } | |
342 | ||
343 | buf = kmalloc(size, GFP_KERNEL); | |
344 | if (!buf) | |
345 | return -ENOMEM; | |
346 | ||
347 | for (i = 0; i < size; i++) | |
348 | buf[i] = hdmi_get_eld_byte(codec, nid, i); | |
349 | ||
5b87ebb7 | 350 | ret = hdmi_update_eld(eld, buf, size); |
7f4a9f43 WF |
351 | |
352 | kfree(buf); | |
353 | return ret; | |
354 | } | |
355 | ||
356 | static void hdmi_show_short_audio_desc(struct cea_sad *a) | |
357 | { | |
358 | char buf[SND_PRINT_RATES_ADVISED_BUFSIZE]; | |
ae8cb4ca | 359 | char buf2[8 + SND_PRINT_BITS_ADVISED_BUFSIZE] = ", bits ="; |
7f4a9f43 | 360 | |
ae8cb4ca WF |
361 | if (!a->format) |
362 | return; | |
7f4a9f43 WF |
363 | |
364 | snd_print_pcm_rates(a->rates, buf, sizeof(buf)); | |
7f4a9f43 WF |
365 | |
366 | if (a->format == AUDIO_CODING_TYPE_LPCM) | |
d757534e | 367 | snd_print_pcm_bits(a->sample_bits, buf2 + 8, sizeof(buf2) - 8); |
ae8cb4ca WF |
368 | else if (a->max_bitrate) |
369 | snprintf(buf2, sizeof(buf2), | |
370 | ", max bitrate = %d", a->max_bitrate); | |
371 | else | |
372 | buf2[0] = '\0'; | |
373 | ||
03284c8f | 374 | printk(KERN_INFO "HDMI: supports coding type %s:" |
ae8cb4ca WF |
375 | " channels = %d, rates =%s%s\n", |
376 | cea_audio_coding_type_names[a->format], | |
377 | a->channels, | |
378 | buf, | |
379 | buf2); | |
7f4a9f43 WF |
380 | } |
381 | ||
903b21d8 | 382 | void snd_print_channel_allocation(int spk_alloc, char *buf, int buflen) |
7f4a9f43 WF |
383 | { |
384 | int i, j; | |
385 | ||
386 | for (i = 0, j = 0; i < ARRAY_SIZE(cea_speaker_allocation_names); i++) { | |
387 | if (spk_alloc & (1 << i)) | |
06f69d17 | 388 | j += snprintf(buf + j, buflen - j, " %s", |
7f4a9f43 WF |
389 | cea_speaker_allocation_names[i]); |
390 | } | |
7f4a9f43 WF |
391 | buf[j] = '\0'; /* necessary when j == 0 */ |
392 | } | |
393 | ||
5b87ebb7 | 394 | void snd_hdmi_show_eld(struct hdmi_eld *e) |
7f4a9f43 WF |
395 | { |
396 | int i; | |
ae8cb4ca | 397 | |
03284c8f | 398 | printk(KERN_INFO "HDMI: detected monitor %s at connection type %s\n", |
ae8cb4ca WF |
399 | e->monitor_name, |
400 | eld_connection_type_names[e->conn_type]); | |
401 | ||
402 | if (e->spk_alloc) { | |
403 | char buf[SND_PRINT_CHANNEL_ALLOCATION_ADVISED_BUFSIZE]; | |
404 | snd_print_channel_allocation(e->spk_alloc, buf, sizeof(buf)); | |
03284c8f | 405 | printk(KERN_INFO "HDMI: available speakers:%s\n", buf); |
ae8cb4ca | 406 | } |
7f4a9f43 WF |
407 | |
408 | for (i = 0; i < e->sad_count; i++) | |
409 | hdmi_show_short_audio_desc(e->sad + i); | |
410 | } | |
5f1e71b1 WF |
411 | |
412 | #ifdef CONFIG_PROC_FS | |
413 | ||
414 | static void hdmi_print_sad_info(int i, struct cea_sad *a, | |
415 | struct snd_info_buffer *buffer) | |
416 | { | |
d39b4352 | 417 | char buf[SND_PRINT_RATES_ADVISED_BUFSIZE]; |
5f1e71b1 WF |
418 | |
419 | snd_iprintf(buffer, "sad%d_coding_type\t[0x%x] %s\n", | |
420 | i, a->format, cea_audio_coding_type_names[a->format]); | |
421 | snd_iprintf(buffer, "sad%d_channels\t\t%d\n", i, a->channels); | |
422 | ||
423 | snd_print_pcm_rates(a->rates, buf, sizeof(buf)); | |
06f69d17 | 424 | snd_iprintf(buffer, "sad%d_rates\t\t[0x%x]%s\n", i, a->rates, buf); |
5f1e71b1 | 425 | |
d39b4352 WF |
426 | if (a->format == AUDIO_CODING_TYPE_LPCM) { |
427 | snd_print_pcm_bits(a->sample_bits, buf, sizeof(buf)); | |
428 | snd_iprintf(buffer, "sad%d_bits\t\t[0x%x]%s\n", | |
429 | i, a->sample_bits, buf); | |
430 | } | |
5f1e71b1 WF |
431 | |
432 | if (a->max_bitrate) | |
433 | snd_iprintf(buffer, "sad%d_max_bitrate\t%d\n", | |
434 | i, a->max_bitrate); | |
435 | ||
436 | if (a->profile) | |
437 | snd_iprintf(buffer, "sad%d_profile\t\t%d\n", i, a->profile); | |
438 | } | |
439 | ||
440 | static void hdmi_print_eld_info(struct snd_info_entry *entry, | |
441 | struct snd_info_buffer *buffer) | |
442 | { | |
5b87ebb7 | 443 | struct hdmi_eld *e = entry->private_data; |
903b21d8 | 444 | char buf[SND_PRINT_CHANNEL_ALLOCATION_ADVISED_BUFSIZE]; |
5f1e71b1 | 445 | int i; |
4805286b WF |
446 | static char *eld_versoin_names[32] = { |
447 | "reserved", | |
448 | "reserved", | |
449 | "CEA-861D or below", | |
450 | [3 ... 30] = "reserved", | |
451 | [31] = "partial" | |
452 | }; | |
453 | static char *cea_edid_version_names[8] = { | |
454 | "no CEA EDID Timing Extension block present", | |
455 | "CEA-861", | |
456 | "CEA-861-A", | |
457 | "CEA-861-B, C or D", | |
458 | [4 ... 7] = "reserved" | |
459 | }; | |
5f1e71b1 | 460 | |
23ccc2bd WF |
461 | snd_iprintf(buffer, "monitor_present\t\t%d\n", e->monitor_present); |
462 | snd_iprintf(buffer, "eld_valid\t\t%d\n", e->eld_valid); | |
5d44f927 SW |
463 | if (!e->eld_valid) |
464 | return; | |
db742104 | 465 | snd_iprintf(buffer, "monitor_name\t\t%s\n", e->monitor_name); |
5f1e71b1 WF |
466 | snd_iprintf(buffer, "connection_type\t\t%s\n", |
467 | eld_connection_type_names[e->conn_type]); | |
468 | snd_iprintf(buffer, "eld_version\t\t[0x%x] %s\n", e->eld_ver, | |
469 | eld_versoin_names[e->eld_ver]); | |
470 | snd_iprintf(buffer, "edid_version\t\t[0x%x] %s\n", e->cea_edid_ver, | |
471 | cea_edid_version_names[e->cea_edid_ver]); | |
472 | snd_iprintf(buffer, "manufacture_id\t\t0x%x\n", e->manufacture_id); | |
473 | snd_iprintf(buffer, "product_id\t\t0x%x\n", e->product_id); | |
474 | snd_iprintf(buffer, "port_id\t\t\t0x%llx\n", (long long)e->port_id); | |
475 | snd_iprintf(buffer, "support_hdcp\t\t%d\n", e->support_hdcp); | |
476 | snd_iprintf(buffer, "support_ai\t\t%d\n", e->support_ai); | |
477 | snd_iprintf(buffer, "audio_sync_delay\t%d\n", e->aud_synch_delay); | |
478 | ||
903b21d8 | 479 | snd_print_channel_allocation(e->spk_alloc, buf, sizeof(buf)); |
06f69d17 | 480 | snd_iprintf(buffer, "speakers\t\t[0x%x]%s\n", e->spk_alloc, buf); |
5f1e71b1 WF |
481 | |
482 | snd_iprintf(buffer, "sad_count\t\t%d\n", e->sad_count); | |
483 | ||
484 | for (i = 0; i < e->sad_count; i++) | |
485 | hdmi_print_sad_info(i, e->sad + i, buffer); | |
486 | } | |
487 | ||
acb05993 | 488 | static void hdmi_write_eld_info(struct snd_info_entry *entry, |
acdda791 WF |
489 | struct snd_info_buffer *buffer) |
490 | { | |
491 | struct hdmi_eld *e = entry->private_data; | |
492 | char line[64]; | |
493 | char name[64]; | |
494 | char *sname; | |
495 | long long val; | |
78735cff | 496 | unsigned int n; |
acdda791 WF |
497 | |
498 | while (!snd_info_get_line(buffer, line, sizeof(line))) { | |
499 | if (sscanf(line, "%s %llx", name, &val) != 2) | |
500 | continue; | |
acb05993 WF |
501 | /* |
502 | * We don't allow modification to these fields: | |
503 | * monitor_name manufacture_id product_id | |
504 | * eld_version edid_version | |
505 | */ | |
23ccc2bd WF |
506 | if (!strcmp(name, "monitor_present")) |
507 | e->monitor_present = val; | |
508 | else if (!strcmp(name, "eld_valid")) | |
509 | e->eld_valid = val; | |
510 | else if (!strcmp(name, "connection_type")) | |
acdda791 WF |
511 | e->conn_type = val; |
512 | else if (!strcmp(name, "port_id")) | |
513 | e->port_id = val; | |
514 | else if (!strcmp(name, "support_hdcp")) | |
515 | e->support_hdcp = val; | |
516 | else if (!strcmp(name, "support_ai")) | |
517 | e->support_ai = val; | |
518 | else if (!strcmp(name, "audio_sync_delay")) | |
519 | e->aud_synch_delay = val; | |
520 | else if (!strcmp(name, "speakers")) | |
521 | e->spk_alloc = val; | |
522 | else if (!strcmp(name, "sad_count")) | |
523 | e->sad_count = val; | |
524 | else if (!strncmp(name, "sad", 3)) { | |
525 | sname = name + 4; | |
526 | n = name[3] - '0'; | |
527 | if (name[4] >= '0' && name[4] <= '9') { | |
528 | sname++; | |
529 | n = 10 * n + name[4] - '0'; | |
530 | } | |
78735cff | 531 | if (n >= ELD_MAX_SAD) |
acdda791 WF |
532 | continue; |
533 | if (!strcmp(sname, "_coding_type")) | |
534 | e->sad[n].format = val; | |
535 | else if (!strcmp(sname, "_channels")) | |
536 | e->sad[n].channels = val; | |
537 | else if (!strcmp(sname, "_rates")) | |
538 | e->sad[n].rates = val; | |
539 | else if (!strcmp(sname, "_bits")) | |
540 | e->sad[n].sample_bits = val; | |
541 | else if (!strcmp(sname, "_max_bitrate")) | |
542 | e->sad[n].max_bitrate = val; | |
acb05993 WF |
543 | else if (!strcmp(sname, "_profile")) |
544 | e->sad[n].profile = val; | |
acdda791 WF |
545 | if (n >= e->sad_count) |
546 | e->sad_count = n + 1; | |
547 | } | |
548 | } | |
549 | } | |
550 | ||
551 | ||
54a25f87 WF |
552 | int snd_hda_eld_proc_new(struct hda_codec *codec, struct hdmi_eld *eld, |
553 | int index) | |
5f1e71b1 WF |
554 | { |
555 | char name[32]; | |
556 | struct snd_info_entry *entry; | |
557 | int err; | |
558 | ||
54a25f87 | 559 | snprintf(name, sizeof(name), "eld#%d.%d", codec->addr, index); |
5f1e71b1 WF |
560 | err = snd_card_proc_new(codec->bus->card, name, &entry); |
561 | if (err < 0) | |
562 | return err; | |
563 | ||
564 | snd_info_set_text_ops(entry, eld, hdmi_print_eld_info); | |
acb05993 | 565 | entry->c.text.write = hdmi_write_eld_info; |
acdda791 | 566 | entry->mode |= S_IWUSR; |
f208dba9 | 567 | eld->proc_entry = entry; |
acdda791 | 568 | |
5f1e71b1 WF |
569 | return 0; |
570 | } | |
571 | ||
f208dba9 TI |
572 | void snd_hda_eld_proc_free(struct hda_codec *codec, struct hdmi_eld *eld) |
573 | { | |
574 | if (!codec->bus->shutdown && eld->proc_entry) { | |
575 | snd_device_free(codec->bus->card, eld->proc_entry); | |
576 | eld->proc_entry = NULL; | |
577 | } | |
578 | } | |
579 | ||
274714f5 TI |
580 | #endif /* CONFIG_PROC_FS */ |
581 | ||
bbbe3390 TI |
582 | /* update PCM info based on ELD */ |
583 | void hdmi_eld_update_pcm_info(struct hdmi_eld *eld, struct hda_pcm_stream *pcm, | |
584 | struct hda_pcm_stream *codec_pars) | |
585 | { | |
586 | int i; | |
587 | ||
3dc86429 AH |
588 | /* assume basic audio support (the basic audio flag is not in ELD; |
589 | * however, all audio capable sinks are required to support basic | |
590 | * audio) */ | |
591 | pcm->rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000; | |
592 | pcm->formats = SNDRV_PCM_FMTBIT_S16_LE; | |
593 | pcm->maxbps = 16; | |
594 | pcm->channels_max = 2; | |
bbbe3390 TI |
595 | for (i = 0; i < eld->sad_count; i++) { |
596 | struct cea_sad *a = &eld->sad[i]; | |
597 | pcm->rates |= a->rates; | |
bbbe3390 TI |
598 | if (a->channels > pcm->channels_max) |
599 | pcm->channels_max = a->channels; | |
600 | if (a->format == AUDIO_CODING_TYPE_LPCM) { | |
bbbe3390 TI |
601 | if (a->sample_bits & AC_SUPPCM_BITS_20) { |
602 | pcm->formats |= SNDRV_PCM_FMTBIT_S32_LE; | |
603 | if (pcm->maxbps < 20) | |
604 | pcm->maxbps = 20; | |
605 | } | |
606 | if (a->sample_bits & AC_SUPPCM_BITS_24) { | |
607 | pcm->formats |= SNDRV_PCM_FMTBIT_S32_LE; | |
608 | if (pcm->maxbps < 24) | |
609 | pcm->maxbps = 24; | |
610 | } | |
611 | } | |
612 | } | |
613 | ||
614 | if (!codec_pars) | |
615 | return; | |
616 | ||
617 | /* restrict the parameters by the values the codec provides */ | |
618 | pcm->rates &= codec_pars->rates; | |
619 | pcm->formats &= codec_pars->formats; | |
bbbe3390 TI |
620 | pcm->channels_max = min(pcm->channels_max, codec_pars->channels_max); |
621 | pcm->maxbps = min(pcm->maxbps, codec_pars->maxbps); | |
622 | } |