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ALSA: hda: minor output message cleanups
[linux-2.6/mini2440.git] / sound / pci / hda / hda_eld.c
blob75e9a4014f4ef03f41768c825671f65b6716a5ab
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>
25 #include <sound/core.h>
26 #include <asm/unaligned.h>
27 #include "hda_codec.h"
28 #include "hda_local.h"
29
30 enum eld_versions {
31 ELD_VER_CEA_861D = 2,
32 ELD_VER_PARTIAL = 31,
33 };
34
35 static char *eld_versoin_names[32] = {
36 "reserved",
37 "reserved",
38 "CEA-861D or below",
39 [3 ... 30] = "reserved",
40 [31] = "partial"
41 };
42
43 enum cea_edid_versions {
44 CEA_EDID_VER_NONE = 0,
45 CEA_EDID_VER_CEA861 = 1,
46 CEA_EDID_VER_CEA861A = 2,
47 CEA_EDID_VER_CEA861BCD = 3,
48 CEA_EDID_VER_RESERVED = 4,
49 };
50
51 static char *cea_edid_version_names[8] = {
52 "no CEA EDID Timing Extension block present",
53 "CEA-861",
54 "CEA-861-A",
55 "CEA-861-B, C or D",
56 [4 ... 7] = "reserved"
57 };
58
59 static char *cea_speaker_allocation_names[] = {
60 /* 0 */ "FL/FR",
61 /* 1 */ "LFE",
62 /* 2 */ "FC",
63 /* 3 */ "RL/RR",
64 /* 4 */ "RC",
65 /* 5 */ "FLC/FRC",
66 /* 6 */ "RLC/RRC",
67 /* 7 */ "FLW/FRW",
68 /* 8 */ "FLH/FRH",
69 /* 9 */ "TC",
70 /* 10 */ "FCH",
71 };
72
73 static char *eld_connection_type_names[4] = {
74 "HDMI",
75 "Display Port",
76 "2-reserved",
77 "3-reserved"
78 };
79
80 enum cea_audio_coding_types {
81 AUDIO_CODING_TYPE_REF_STREAM_HEADER = 0,
82 AUDIO_CODING_TYPE_LPCM = 1,
83 AUDIO_CODING_TYPE_AC3 = 2,
84 AUDIO_CODING_TYPE_MPEG1 = 3,
85 AUDIO_CODING_TYPE_MP3 = 4,
86 AUDIO_CODING_TYPE_MPEG2 = 5,
87 AUDIO_CODING_TYPE_AACLC = 6,
88 AUDIO_CODING_TYPE_DTS = 7,
89 AUDIO_CODING_TYPE_ATRAC = 8,
90 AUDIO_CODING_TYPE_SACD = 9,
91 AUDIO_CODING_TYPE_EAC3 = 10,
92 AUDIO_CODING_TYPE_DTS_HD = 11,
93 AUDIO_CODING_TYPE_MLP = 12,
94 AUDIO_CODING_TYPE_DST = 13,
95 AUDIO_CODING_TYPE_WMAPRO = 14,
96 AUDIO_CODING_TYPE_REF_CXT = 15,
97 /* also include valid xtypes below */
98 AUDIO_CODING_TYPE_HE_AAC = 15,
99 AUDIO_CODING_TYPE_HE_AAC2 = 16,
100 AUDIO_CODING_TYPE_MPEG_SURROUND = 17,
101 };
102
103 enum cea_audio_coding_xtypes {
104 AUDIO_CODING_XTYPE_HE_REF_CT = 0,
105 AUDIO_CODING_XTYPE_HE_AAC = 1,
106 AUDIO_CODING_XTYPE_HE_AAC2 = 2,
107 AUDIO_CODING_XTYPE_MPEG_SURROUND = 3,
108 AUDIO_CODING_XTYPE_FIRST_RESERVED = 4,
109 };
110
111 static char *cea_audio_coding_type_names[] = {
112 /* 0 */ "undefined",
113 /* 1 */ "LPCM",
114 /* 2 */ "AC-3",
115 /* 3 */ "MPEG1",
116 /* 4 */ "MP3",
117 /* 5 */ "MPEG2",
118 /* 6 */ "AAC-LC",
119 /* 7 */ "DTS",
120 /* 8 */ "ATRAC",
121 /* 9 */ "DSD (One Bit Audio)",
122 /* 10 */ "E-AC-3/DD+ (Dolby Digital Plus)",
123 /* 11 */ "DTS-HD",
124 /* 12 */ "MLP (Dolby TrueHD)",
125 /* 13 */ "DST",
126 /* 14 */ "WMAPro",
127 /* 15 */ "HE-AAC",
128 /* 16 */ "HE-AACv2",
129 /* 17 */ "MPEG Surround",
130 };
131
132 /*
133 * The following two lists are shared between
134 * - HDMI audio InfoFrame (source to sink)
135 * - CEA E-EDID Extension (sink to source)
136 */
137
138 /*
139 * SS1:SS0 index => sample size
140 */
141 static int cea_sample_sizes[4] = {
142 0, /* 0: Refer to Stream Header */
143 AC_SUPPCM_BITS_16, /* 1: 16 bits */
144 AC_SUPPCM_BITS_20, /* 2: 20 bits */
145 AC_SUPPCM_BITS_24, /* 3: 24 bits */
146 };
147
148 /*
149 * SF2:SF1:SF0 index => sampling frequency
150 */
151 static int cea_sampling_frequencies[8] = {
152 0, /* 0: Refer to Stream Header */
153 SNDRV_PCM_RATE_32000, /* 1: 32000Hz */
154 SNDRV_PCM_RATE_44100, /* 2: 44100Hz */
155 SNDRV_PCM_RATE_48000, /* 3: 48000Hz */
156 SNDRV_PCM_RATE_88200, /* 4: 88200Hz */
157 SNDRV_PCM_RATE_96000, /* 5: 96000Hz */
158 SNDRV_PCM_RATE_176400, /* 6: 176400Hz */
159 SNDRV_PCM_RATE_192000, /* 7: 192000Hz */
160 };
161
162 static unsigned char hdmi_get_eld_byte(struct hda_codec *codec, hda_nid_t nid,
163 int byte_index)
164 {
165 unsigned int val;
166
167 val = snd_hda_codec_read(codec, nid, 0,
168 AC_VERB_GET_HDMI_ELDD, byte_index);
169
170 #ifdef BE_PARANOID
171 printk(KERN_INFO "ELD data byte %d: 0x%x\n", byte_index, val);
172 #endif
173
174 if ((val & AC_ELDD_ELD_VALID) == 0) {
175 snd_printd(KERN_INFO "Invalid ELD data byte %d\n",
176 byte_index);
177 val = 0;
178 }
179
180 return val & AC_ELDD_ELD_DATA;
181 }
182
183 #define GRAB_BITS(buf, byte, lowbit, bits) \
184 ({ \
185 BUILD_BUG_ON(lowbit > 7); \
186 BUILD_BUG_ON(bits > 8); \
187 BUILD_BUG_ON(bits <= 0); \
188 \
189 (buf[byte] >> (lowbit)) & ((1 << (bits)) - 1); \
190 })
191
192 static void hdmi_update_short_audio_desc(struct cea_sad *a,
193 const unsigned char *buf)
194 {
195 int i;
196 int val;
197
198 val = GRAB_BITS(buf, 1, 0, 7);
199 a->rates = 0;
200 for (i = 0; i < 7; i++)
201 if (val & (1 << i))
202 a->rates |= cea_sampling_frequencies[i + 1];
203
204 a->channels = GRAB_BITS(buf, 0, 0, 3);
205 a->channels++;
206
207 a->format = GRAB_BITS(buf, 0, 3, 4);
208 switch (a->format) {
209 case AUDIO_CODING_TYPE_REF_STREAM_HEADER:
210 snd_printd(KERN_INFO
211 "audio coding type 0 not expected in ELD\n");
212 break;
213
214 case AUDIO_CODING_TYPE_LPCM:
215 val = GRAB_BITS(buf, 2, 0, 3);
216 a->sample_bits = 0;
217 for (i = 0; i < 3; i++)
218 if (val & (1 << i))
219 a->sample_bits |= cea_sample_sizes[i + 1];
220 break;
221
222 case AUDIO_CODING_TYPE_AC3:
223 case AUDIO_CODING_TYPE_MPEG1:
224 case AUDIO_CODING_TYPE_MP3:
225 case AUDIO_CODING_TYPE_MPEG2:
226 case AUDIO_CODING_TYPE_AACLC:
227 case AUDIO_CODING_TYPE_DTS:
228 case AUDIO_CODING_TYPE_ATRAC:
229 a->max_bitrate = GRAB_BITS(buf, 2, 0, 8);
230 a->max_bitrate *= 8000;
231 break;
232
233 case AUDIO_CODING_TYPE_SACD:
234 break;
235
236 case AUDIO_CODING_TYPE_EAC3:
237 break;
238
239 case AUDIO_CODING_TYPE_DTS_HD:
240 break;
241
242 case AUDIO_CODING_TYPE_MLP:
243 break;
244
245 case AUDIO_CODING_TYPE_DST:
246 break;
247
248 case AUDIO_CODING_TYPE_WMAPRO:
249 a->profile = GRAB_BITS(buf, 2, 0, 3);
250 break;
251
252 case AUDIO_CODING_TYPE_REF_CXT:
253 a->format = GRAB_BITS(buf, 2, 3, 5);
254 if (a->format == AUDIO_CODING_XTYPE_HE_REF_CT ||
255 a->format >= AUDIO_CODING_XTYPE_FIRST_RESERVED) {
256 snd_printd(KERN_INFO
257 "audio coding xtype %d not expected in ELD\n",
258 a->format);
259 a->format = 0;
260 } else
261 a->format += AUDIO_CODING_TYPE_HE_AAC -
262 AUDIO_CODING_XTYPE_HE_AAC;
263 break;
264 }
265 }
266
267 /*
268 * Be careful, ELD buf could be totally rubbish!
269 */
270 static int hdmi_update_eld(struct hdmi_eld *e,
271 const unsigned char *buf, int size)
272 {
273 int mnl;
274 int i;
275
276 e->eld_ver = GRAB_BITS(buf, 0, 3, 5);
277 if (e->eld_ver != ELD_VER_CEA_861D &&
278 e->eld_ver != ELD_VER_PARTIAL) {
279 snd_printd(KERN_INFO "Unknown ELD version %d\n", e->eld_ver);
280 goto out_fail;
281 }
282
283 e->eld_size = size;
284 e->baseline_len = GRAB_BITS(buf, 2, 0, 8);
285 mnl = GRAB_BITS(buf, 4, 0, 5);
286 e->cea_edid_ver = GRAB_BITS(buf, 4, 5, 3);
287
288 e->support_hdcp = GRAB_BITS(buf, 5, 0, 1);
289 e->support_ai = GRAB_BITS(buf, 5, 1, 1);
290 e->conn_type = GRAB_BITS(buf, 5, 2, 2);
291 e->sad_count = GRAB_BITS(buf, 5, 4, 4);
292
293 e->aud_synch_delay = GRAB_BITS(buf, 6, 0, 8) * 2;
294 e->spk_alloc = GRAB_BITS(buf, 7, 0, 7);
295
296 e->port_id = get_unaligned_le64(buf + 8);
297
298 /* not specified, but the spec's tendency is little endian */
299 e->manufacture_id = get_unaligned_le16(buf + 16);
300 e->product_id = get_unaligned_le16(buf + 18);
301
302 if (mnl > ELD_MAX_MNL) {
303 snd_printd(KERN_INFO "MNL is reserved value %d\n", mnl);
304 goto out_fail;
305 } else if (ELD_FIXED_BYTES + mnl > size) {
306 snd_printd(KERN_INFO "out of range MNL %d\n", mnl);
307 goto out_fail;
308 } else
309 strlcpy(e->monitor_name, buf + ELD_FIXED_BYTES, mnl);
310
311 for (i = 0; i < e->sad_count; i++) {
312 if (ELD_FIXED_BYTES + mnl + 3 * (i + 1) > size) {
313 snd_printd(KERN_INFO "out of range SAD %d\n", i);
314 goto out_fail;
315 }
316 hdmi_update_short_audio_desc(e->sad + i,
317 buf + ELD_FIXED_BYTES + mnl + 3 * i);
318 }
319
320 return 0;
321
322 out_fail:
323 e->eld_ver = 0;
324 return -EINVAL;
325 }
326
327 static int hdmi_present_sense(struct hda_codec *codec, hda_nid_t nid)
328 {
329 return snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_PIN_SENSE, 0);
330 }
331
332 static int hdmi_eld_valid(struct hda_codec *codec, hda_nid_t nid)
333 {
334 int eldv;
335 int present;
336
337 present = hdmi_present_sense(codec, nid);
338 eldv = (present & AC_PINSENSE_ELDV);
339 present = (present & AC_PINSENSE_PRESENCE);
340
341 #ifdef CONFIG_SND_DEBUG_VERBOSE
342 printk(KERN_INFO "pinp = %d, eldv = %d\n", !!present, !!eldv);
343 #endif
344
345 return eldv && present;
346 }
347
348 int snd_hdmi_get_eld_size(struct hda_codec *codec, hda_nid_t nid)
349 {
350 return snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_HDMI_DIP_SIZE,
351 AC_DIPSIZE_ELD_BUF);
352 }
353
354 int snd_hdmi_get_eld(struct hdmi_eld *eld,
355 struct hda_codec *codec, hda_nid_t nid)
356 {
357 int i;
358 int ret;
359 int size;
360 unsigned char *buf;
361
362 if (!hdmi_eld_valid(codec, nid))
363 return -ENOENT;
364
365 size = snd_hdmi_get_eld_size(codec, nid);
366 if (size == 0) {
367 /* wfg: workaround for ASUS P5E-VM HDMI board */
368 snd_printd(KERN_INFO "ELD buf size is 0, force 128\n");
369 size = 128;
370 }
371 if (size < ELD_FIXED_BYTES || size > PAGE_SIZE) {
372 snd_printd(KERN_INFO "Invalid ELD buf size %d\n", size);
373 return -ERANGE;
374 }
375
376 buf = kmalloc(size, GFP_KERNEL);
377 if (!buf)
378 return -ENOMEM;
379
380 for (i = 0; i < size; i++)
381 buf[i] = hdmi_get_eld_byte(codec, nid, i);
382
383 ret = hdmi_update_eld(eld, buf, size);
384
385 kfree(buf);
386 return ret;
387 }
388
389 static void hdmi_show_short_audio_desc(struct cea_sad *a)
390 {
391 char buf[SND_PRINT_RATES_ADVISED_BUFSIZE];
392
393 printk(KERN_INFO "coding type: %s\n",
394 cea_audio_coding_type_names[a->format]);
395 printk(KERN_INFO "channels: %d\n", a->channels);
396
397 snd_print_pcm_rates(a->rates, buf, sizeof(buf));
398 printk(KERN_INFO "sampling rates: %s\n", buf);
399
400 if (a->format == AUDIO_CODING_TYPE_LPCM)
401 printk(KERN_INFO "sample bits: 0x%x\n", a->sample_bits);
402
403 if (a->max_bitrate)
404 printk(KERN_INFO "max bitrate: %d\n", a->max_bitrate);
405
406 if (a->profile)
407 printk(KERN_INFO "profile: %d\n", a->profile);
408 }
409
410 void snd_print_channel_allocation(int spk_alloc, char *buf, int buflen)
411 {
412 int i, j;
413
414 for (i = 0, j = 0; i < ARRAY_SIZE(cea_speaker_allocation_names); i++) {
415 if (spk_alloc & (1 << i))
416 j += snprintf(buf + j, buflen - j, " %s",
417 cea_speaker_allocation_names[i]);
418 }
419 buf[j] = '\0'; /* necessary when j == 0 */
420 }
421
422 void snd_hdmi_show_eld(struct hdmi_eld *e)
423 {
424 int i;
425 char buf[SND_PRINT_CHANNEL_ALLOCATION_ADVISED_BUFSIZE];
426
427 printk(KERN_INFO "ELD buffer size is %d\n", e->eld_size);
428 printk(KERN_INFO "ELD baseline len is %d*4\n", e->baseline_len);
429 printk(KERN_INFO "vendor block len is %d\n",
430 e->eld_size - e->baseline_len * 4 - 4);
431 printk(KERN_INFO "ELD version is %s\n",
432 eld_versoin_names[e->eld_ver]);
433 printk(KERN_INFO "CEA EDID version is %s\n",
434 cea_edid_version_names[e->cea_edid_ver]);
435 printk(KERN_INFO "manufacture id is 0x%x\n", e->manufacture_id);
436 printk(KERN_INFO "product id is 0x%x\n", e->product_id);
437 printk(KERN_INFO "port id is 0x%llx\n", (long long)e->port_id);
438 printk(KERN_INFO "HDCP support is %d\n", e->support_hdcp);
439 printk(KERN_INFO "AI support is %d\n", e->support_ai);
440 printk(KERN_INFO "SAD count is %d\n", e->sad_count);
441 printk(KERN_INFO "audio sync delay is %x\n", e->aud_synch_delay);
442 printk(KERN_INFO "connection type is %s\n",
443 eld_connection_type_names[e->conn_type]);
444 printk(KERN_INFO "monitor name is %s\n", e->monitor_name);
445
446 snd_print_channel_allocation(e->spk_alloc, buf, sizeof(buf));
447 printk(KERN_INFO "speaker allocations: (0x%x)%s\n", e->spk_alloc, buf);
448
449 for (i = 0; i < e->sad_count; i++)
450 hdmi_show_short_audio_desc(e->sad + i);
451 }
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 {
458 char buf[80];
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
464 snd_print_pcm_rates(a->rates, buf, sizeof(buf));
465 snd_iprintf(buffer, "sad%d_rates\t\t[0x%x]%s\n", i, a->rates, buf);
466
467 if (a->format == AUDIO_CODING_TYPE_LPCM)
468 snd_iprintf(buffer, "sad%d_bits\t\t0x%x\n",
469 i, a->sample_bits);
470
471 if (a->max_bitrate)
472 snd_iprintf(buffer, "sad%d_max_bitrate\t%d\n",
473 i, a->max_bitrate);
474
475 if (a->profile)
476 snd_iprintf(buffer, "sad%d_profile\t\t%d\n", i, a->profile);
477 }
478
479 static void hdmi_print_eld_info(struct snd_info_entry *entry,
480 struct snd_info_buffer *buffer)
481 {
482 struct hdmi_eld *e = entry->private_data;
483 char buf[SND_PRINT_CHANNEL_ALLOCATION_ADVISED_BUFSIZE];
484 int i;
485
486 snd_iprintf(buffer, "monitor name\t\t%s\n", e->monitor_name);
487 snd_iprintf(buffer, "connection_type\t\t%s\n",
488 eld_connection_type_names[e->conn_type]);
489 snd_iprintf(buffer, "eld_version\t\t[0x%x] %s\n", e->eld_ver,
490 eld_versoin_names[e->eld_ver]);
491 snd_iprintf(buffer, "edid_version\t\t[0x%x] %s\n", e->cea_edid_ver,
492 cea_edid_version_names[e->cea_edid_ver]);
493 snd_iprintf(buffer, "manufacture_id\t\t0x%x\n", e->manufacture_id);
494 snd_iprintf(buffer, "product_id\t\t0x%x\n", e->product_id);
495 snd_iprintf(buffer, "port_id\t\t\t0x%llx\n", (long long)e->port_id);
496 snd_iprintf(buffer, "support_hdcp\t\t%d\n", e->support_hdcp);
497 snd_iprintf(buffer, "support_ai\t\t%d\n", e->support_ai);
498 snd_iprintf(buffer, "audio_sync_delay\t%d\n", e->aud_synch_delay);
499
500 snd_print_channel_allocation(e->spk_alloc, buf, sizeof(buf));
501 snd_iprintf(buffer, "speakers\t\t[0x%x]%s\n", e->spk_alloc, buf);
502
503 snd_iprintf(buffer, "sad_count\t\t%d\n", e->sad_count);
504
505 for (i = 0; i < e->sad_count; i++)
506 hdmi_print_sad_info(i, e->sad + i, buffer);
507 }
508
509 int snd_hda_eld_proc_new(struct hda_codec *codec, struct hdmi_eld *eld)
510 {
511 char name[32];
512 struct snd_info_entry *entry;
513 int err;
514
515 snprintf(name, sizeof(name), "eld#%d", codec->addr);
516 err = snd_card_proc_new(codec->bus->card, name, &entry);
517 if (err < 0)
518 return err;
519
520 snd_info_set_text_ops(entry, eld, hdmi_print_eld_info);
521 return 0;
522 }
523
524 #endif
Support for the Chinese Samsung S3C2440 based development boards