blob: 7ae7578bdcc038a576efce5d6f1110522641670d [file] [log] [blame]
Wu Fengguang7f4a9f42008-11-18 11:47:52 +08001/*
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>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090025#include <linux/slab.h>
Wu Fengguang7f4a9f42008-11-18 11:47:52 +080026#include <sound/core.h>
27#include <asm/unaligned.h>
28#include "hda_codec.h"
29#include "hda_local.h"
30
31enum eld_versions {
32 ELD_VER_CEA_861D = 2,
33 ELD_VER_PARTIAL = 31,
34};
35
Wu Fengguang7f4a9f42008-11-18 11:47:52 +080036enum 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
Wu Fengguang7f4a9f42008-11-18 11:47:52 +080044static 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
58static char *eld_connection_type_names[4] = {
59 "HDMI",
Wu Fengguang9415e1c2008-11-22 09:40:56 +080060 "DisplayPort",
Wu Fengguang7f4a9f42008-11-18 11:47:52 +080061 "2-reserved",
62 "3-reserved"
63};
64
65enum 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
88enum 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
96static 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",
Wu Fengguang06f69d12008-11-19 15:14:01 +0800106 /* 9 */ "DSD (One Bit Audio)",
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800107 /* 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)
Wu Fengguang4e19c582008-11-19 15:13:59 +0800120 * - CEA E-EDID Extension (sink to source)
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800121 */
122
123/*
124 * SS1:SS0 index => sample size
125 */
126static 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 */
136static 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
Takashi Iwaib6acf012011-08-20 09:14:45 +0200147static unsigned int hdmi_get_eld_data(struct hda_codec *codec, hda_nid_t nid,
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800148 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);
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800154#ifdef BE_PARANOID
Wu Fengguang03284c82008-11-22 09:40:53 +0800155 printk(KERN_INFO "HDMI: ELD data byte %d: 0x%x\n", byte_index, val);
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800156#endif
Takashi Iwaib6acf012011-08-20 09:14:45 +0200157 return val;
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800158}
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
169static 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
Anssi Hannula0bbaee32010-12-07 21:19:23 +0200184 a->sample_bits = 0;
185 a->max_bitrate = 0;
186
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800187 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
Wu Fengguang03284c82008-11-22 09:40:53 +0800191 "HDMI: audio coding type 0 not expected\n");
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800192 break;
193
194 case AUDIO_CODING_TYPE_LPCM:
195 val = GRAB_BITS(buf, 2, 0, 3);
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800196 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
Wu Fengguang03284c82008-11-22 09:40:53 +0800236 "HDMI: audio coding xtype %d not expected\n",
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800237 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 */
Wu Fengguang5b87ebb2008-11-19 15:14:00 +0800249static int hdmi_update_eld(struct hdmi_eld *e,
250 const unsigned char *buf, int size)
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800251{
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) {
Wu Fengguang03284c82008-11-22 09:40:53 +0800258 snd_printd(KERN_INFO "HDMI: Unknown ELD version %d\n",
259 e->eld_ver);
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800260 goto out_fail;
261 }
262
263 e->eld_size = size;
264 e->baseline_len = GRAB_BITS(buf, 2, 0, 8);
265 mnl = GRAB_BITS(buf, 4, 0, 5);
266 e->cea_edid_ver = GRAB_BITS(buf, 4, 5, 3);
267
268 e->support_hdcp = GRAB_BITS(buf, 5, 0, 1);
269 e->support_ai = GRAB_BITS(buf, 5, 1, 1);
270 e->conn_type = GRAB_BITS(buf, 5, 2, 2);
271 e->sad_count = GRAB_BITS(buf, 5, 4, 4);
272
273 e->aud_synch_delay = GRAB_BITS(buf, 6, 0, 8) * 2;
274 e->spk_alloc = GRAB_BITS(buf, 7, 0, 7);
275
276 e->port_id = get_unaligned_le64(buf + 8);
277
278 /* not specified, but the spec's tendency is little endian */
279 e->manufacture_id = get_unaligned_le16(buf + 16);
280 e->product_id = get_unaligned_le16(buf + 18);
281
282 if (mnl > ELD_MAX_MNL) {
Wu Fengguang03284c82008-11-22 09:40:53 +0800283 snd_printd(KERN_INFO "HDMI: MNL is reserved value %d\n", mnl);
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800284 goto out_fail;
285 } else if (ELD_FIXED_BYTES + mnl > size) {
Wu Fengguang03284c82008-11-22 09:40:53 +0800286 snd_printd(KERN_INFO "HDMI: out of range MNL %d\n", mnl);
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800287 goto out_fail;
288 } else
Wu Fengguangf5b2d0e2011-06-29 14:26:07 +0800289 strlcpy(e->monitor_name, buf + ELD_FIXED_BYTES, mnl + 1);
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800290
291 for (i = 0; i < e->sad_count; i++) {
292 if (ELD_FIXED_BYTES + mnl + 3 * (i + 1) > size) {
Wu Fengguang03284c82008-11-22 09:40:53 +0800293 snd_printd(KERN_INFO "HDMI: out of range SAD %d\n", i);
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800294 goto out_fail;
295 }
296 hdmi_update_short_audio_desc(e->sad + i,
297 buf + ELD_FIXED_BYTES + mnl + 3 * i);
298 }
299
Wu Fengguang2d1b4392011-11-16 16:29:48 +0800300 /*
301 * HDMI sink's ELD info cannot always be retrieved for now, e.g.
302 * in console or for audio devices. Assume the highest speakers
303 * configuration, to _not_ prohibit multi-channel audio playback.
304 */
305 if (!e->spk_alloc)
306 e->spk_alloc = 0xffff;
307
Wu Fengguangb95d68b2011-11-16 16:29:46 +0800308 e->eld_valid = true;
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800309 return 0;
310
311out_fail:
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800312 return -EINVAL;
313}
314
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800315int 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
Wu Fengguang5b87ebb2008-11-19 15:14:00 +0800321int snd_hdmi_get_eld(struct hdmi_eld *eld,
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800322 struct hda_codec *codec, hda_nid_t nid)
323{
324 int i;
325 int ret;
326 int size;
327 unsigned char *buf;
328
Pierre-Louis Bossart14bc52b2011-09-30 16:35:41 -0500329 /*
330 * ELD size is initialized to zero in caller function. If no errors and
331 * ELD is valid, actual eld_size is assigned in hdmi_update_eld()
332 */
333
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800334 size = snd_hdmi_get_eld_size(codec, nid);
335 if (size == 0) {
336 /* wfg: workaround for ASUS P5E-VM HDMI board */
Wu Fengguang03284c82008-11-22 09:40:53 +0800337 snd_printd(KERN_INFO "HDMI: ELD buf size is 0, force 128\n");
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800338 size = 128;
339 }
Pierre-Louis Bossart14bc52b2011-09-30 16:35:41 -0500340 if (size < ELD_FIXED_BYTES || size > ELD_MAX_SIZE) {
Wu Fengguang03284c82008-11-22 09:40:53 +0800341 snd_printd(KERN_INFO "HDMI: invalid ELD buf size %d\n", size);
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800342 return -ERANGE;
343 }
344
Pierre-Louis Bossart14bc52b2011-09-30 16:35:41 -0500345 /* set ELD buffer */
346 buf = eld->eld_buffer;
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800347
Takashi Iwaib6acf012011-08-20 09:14:45 +0200348 for (i = 0; i < size; i++) {
349 unsigned int val = hdmi_get_eld_data(codec, nid, i);
350 if (!(val & AC_ELDD_ELD_VALID)) {
351 if (!i) {
352 snd_printd(KERN_INFO
353 "HDMI: invalid ELD data\n");
354 ret = -EINVAL;
355 goto error;
356 }
357 snd_printd(KERN_INFO
358 "HDMI: invalid ELD data byte %d\n", i);
359 val = 0;
360 } else
361 val &= AC_ELDD_ELD_DATA;
362 buf[i] = val;
363 }
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800364
Wu Fengguang5b87ebb2008-11-19 15:14:00 +0800365 ret = hdmi_update_eld(eld, buf, size);
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800366
Takashi Iwaib6acf012011-08-20 09:14:45 +0200367error:
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800368 return ret;
369}
370
Pierre-Louis Bossartaf65cbf2011-10-05 15:14:20 -0500371/**
372 * SNDRV_PCM_RATE_* and AC_PAR_PCM values don't match, print correct rates with
373 * hdmi-specific routine.
374 */
375static void hdmi_print_pcm_rates(int pcm, char *buf, int buflen)
376{
377 static unsigned int alsa_rates[] = {
378 5512, 8000, 11025, 16000, 22050, 32000, 44100, 48000, 88200,
379 96000, 176400, 192000, 384000
380 };
381 int i, j;
382
383 for (i = 0, j = 0; i < ARRAY_SIZE(alsa_rates); i++)
384 if (pcm & (1 << i))
385 j += snprintf(buf + j, buflen - j, " %d",
386 alsa_rates[i]);
387
388 buf[j] = '\0'; /* necessary when j == 0 */
389}
390
Takashi Iwaif71ff0d2011-10-06 08:16:29 +0200391#define SND_PRINT_RATES_ADVISED_BUFSIZE 80
392
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800393static void hdmi_show_short_audio_desc(struct cea_sad *a)
394{
395 char buf[SND_PRINT_RATES_ADVISED_BUFSIZE];
Wu Fengguangae8cb4c2008-11-19 15:14:03 +0800396 char buf2[8 + SND_PRINT_BITS_ADVISED_BUFSIZE] = ", bits =";
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800397
Wu Fengguangae8cb4c2008-11-19 15:14:03 +0800398 if (!a->format)
399 return;
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800400
Pierre-Louis Bossartaf65cbf2011-10-05 15:14:20 -0500401 hdmi_print_pcm_rates(a->rates, buf, sizeof(buf));
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800402
403 if (a->format == AUDIO_CODING_TYPE_LPCM)
David Henningssond7575342011-01-25 19:44:26 +0100404 snd_print_pcm_bits(a->sample_bits, buf2 + 8, sizeof(buf2) - 8);
Wu Fengguangae8cb4c2008-11-19 15:14:03 +0800405 else if (a->max_bitrate)
406 snprintf(buf2, sizeof(buf2),
407 ", max bitrate = %d", a->max_bitrate);
408 else
409 buf2[0] = '\0';
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800410
Wu Fengguang03284c82008-11-22 09:40:53 +0800411 printk(KERN_INFO "HDMI: supports coding type %s:"
Wu Fengguangae8cb4c2008-11-19 15:14:03 +0800412 " channels = %d, rates =%s%s\n",
413 cea_audio_coding_type_names[a->format],
414 a->channels,
415 buf,
416 buf2);
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800417}
418
Wu Fengguang903b21d2008-11-19 08:56:16 +0800419void snd_print_channel_allocation(int spk_alloc, char *buf, int buflen)
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800420{
421 int i, j;
422
423 for (i = 0, j = 0; i < ARRAY_SIZE(cea_speaker_allocation_names); i++) {
424 if (spk_alloc & (1 << i))
Wu Fengguang06f69d12008-11-19 15:14:01 +0800425 j += snprintf(buf + j, buflen - j, " %s",
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800426 cea_speaker_allocation_names[i]);
427 }
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800428 buf[j] = '\0'; /* necessary when j == 0 */
429}
430
Wu Fengguang5b87ebb2008-11-19 15:14:00 +0800431void snd_hdmi_show_eld(struct hdmi_eld *e)
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800432{
433 int i;
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800434
Wu Fengguang03284c82008-11-22 09:40:53 +0800435 printk(KERN_INFO "HDMI: detected monitor %s at connection type %s\n",
Wu Fengguangae8cb4c2008-11-19 15:14:03 +0800436 e->monitor_name,
437 eld_connection_type_names[e->conn_type]);
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800438
Wu Fengguangae8cb4c2008-11-19 15:14:03 +0800439 if (e->spk_alloc) {
440 char buf[SND_PRINT_CHANNEL_ALLOCATION_ADVISED_BUFSIZE];
441 snd_print_channel_allocation(e->spk_alloc, buf, sizeof(buf));
Wu Fengguang03284c82008-11-22 09:40:53 +0800442 printk(KERN_INFO "HDMI: available speakers:%s\n", buf);
Wu Fengguangae8cb4c2008-11-19 15:14:03 +0800443 }
Wu Fengguang7f4a9f42008-11-18 11:47:52 +0800444
445 for (i = 0; i < e->sad_count; i++)
446 hdmi_show_short_audio_desc(e->sad + i);
447}
Wu Fengguang5f1e71b2008-11-18 11:47:53 +0800448
449#ifdef CONFIG_PROC_FS
450
451static void hdmi_print_sad_info(int i, struct cea_sad *a,
452 struct snd_info_buffer *buffer)
453{
Wu Fengguangd39b4352008-11-19 15:14:02 +0800454 char buf[SND_PRINT_RATES_ADVISED_BUFSIZE];
Wu Fengguang5f1e71b2008-11-18 11:47:53 +0800455
456 snd_iprintf(buffer, "sad%d_coding_type\t[0x%x] %s\n",
457 i, a->format, cea_audio_coding_type_names[a->format]);
458 snd_iprintf(buffer, "sad%d_channels\t\t%d\n", i, a->channels);
459
Pierre-Louis Bossartaf65cbf2011-10-05 15:14:20 -0500460 hdmi_print_pcm_rates(a->rates, buf, sizeof(buf));
Wu Fengguang06f69d12008-11-19 15:14:01 +0800461 snd_iprintf(buffer, "sad%d_rates\t\t[0x%x]%s\n", i, a->rates, buf);
Wu Fengguang5f1e71b2008-11-18 11:47:53 +0800462
Wu Fengguangd39b4352008-11-19 15:14:02 +0800463 if (a->format == AUDIO_CODING_TYPE_LPCM) {
464 snd_print_pcm_bits(a->sample_bits, buf, sizeof(buf));
465 snd_iprintf(buffer, "sad%d_bits\t\t[0x%x]%s\n",
466 i, a->sample_bits, buf);
467 }
Wu Fengguang5f1e71b2008-11-18 11:47:53 +0800468
469 if (a->max_bitrate)
470 snd_iprintf(buffer, "sad%d_max_bitrate\t%d\n",
471 i, a->max_bitrate);
472
473 if (a->profile)
474 snd_iprintf(buffer, "sad%d_profile\t\t%d\n", i, a->profile);
475}
476
477static void hdmi_print_eld_info(struct snd_info_entry *entry,
478 struct snd_info_buffer *buffer)
479{
Wu Fengguang5b87ebb2008-11-19 15:14:00 +0800480 struct hdmi_eld *e = entry->private_data;
Wu Fengguang903b21d2008-11-19 08:56:16 +0800481 char buf[SND_PRINT_CHANNEL_ALLOCATION_ADVISED_BUFSIZE];
Wu Fengguang5f1e71b2008-11-18 11:47:53 +0800482 int i;
Wu Fengguang48052862008-11-22 09:40:57 +0800483 static char *eld_versoin_names[32] = {
484 "reserved",
485 "reserved",
486 "CEA-861D or below",
487 [3 ... 30] = "reserved",
488 [31] = "partial"
489 };
490 static char *cea_edid_version_names[8] = {
491 "no CEA EDID Timing Extension block present",
492 "CEA-861",
493 "CEA-861-A",
494 "CEA-861-B, C or D",
495 [4 ... 7] = "reserved"
496 };
Wu Fengguang5f1e71b2008-11-18 11:47:53 +0800497
Wu Fengguang23ccc2b2009-11-18 12:38:01 +0800498 snd_iprintf(buffer, "monitor_present\t\t%d\n", e->monitor_present);
499 snd_iprintf(buffer, "eld_valid\t\t%d\n", e->eld_valid);
Stephen Warren5d44f922011-05-24 17:11:17 -0600500 if (!e->eld_valid)
501 return;
Wu Fengguangdb742102008-11-21 12:34:05 +0800502 snd_iprintf(buffer, "monitor_name\t\t%s\n", e->monitor_name);
Wu Fengguang5f1e71b2008-11-18 11:47:53 +0800503 snd_iprintf(buffer, "connection_type\t\t%s\n",
504 eld_connection_type_names[e->conn_type]);
505 snd_iprintf(buffer, "eld_version\t\t[0x%x] %s\n", e->eld_ver,
506 eld_versoin_names[e->eld_ver]);
507 snd_iprintf(buffer, "edid_version\t\t[0x%x] %s\n", e->cea_edid_ver,
508 cea_edid_version_names[e->cea_edid_ver]);
509 snd_iprintf(buffer, "manufacture_id\t\t0x%x\n", e->manufacture_id);
510 snd_iprintf(buffer, "product_id\t\t0x%x\n", e->product_id);
511 snd_iprintf(buffer, "port_id\t\t\t0x%llx\n", (long long)e->port_id);
512 snd_iprintf(buffer, "support_hdcp\t\t%d\n", e->support_hdcp);
513 snd_iprintf(buffer, "support_ai\t\t%d\n", e->support_ai);
514 snd_iprintf(buffer, "audio_sync_delay\t%d\n", e->aud_synch_delay);
515
Wu Fengguang903b21d2008-11-19 08:56:16 +0800516 snd_print_channel_allocation(e->spk_alloc, buf, sizeof(buf));
Wu Fengguang06f69d12008-11-19 15:14:01 +0800517 snd_iprintf(buffer, "speakers\t\t[0x%x]%s\n", e->spk_alloc, buf);
Wu Fengguang5f1e71b2008-11-18 11:47:53 +0800518
519 snd_iprintf(buffer, "sad_count\t\t%d\n", e->sad_count);
520
521 for (i = 0; i < e->sad_count; i++)
522 hdmi_print_sad_info(i, e->sad + i, buffer);
523}
524
Wu Fengguangacb05992008-11-22 09:40:54 +0800525static void hdmi_write_eld_info(struct snd_info_entry *entry,
Wu Fengguangacdda792008-11-21 11:41:50 +0800526 struct snd_info_buffer *buffer)
527{
528 struct hdmi_eld *e = entry->private_data;
529 char line[64];
530 char name[64];
531 char *sname;
532 long long val;
Roel Kluin78735cf2009-07-29 14:35:20 +0200533 unsigned int n;
Wu Fengguangacdda792008-11-21 11:41:50 +0800534
535 while (!snd_info_get_line(buffer, line, sizeof(line))) {
536 if (sscanf(line, "%s %llx", name, &val) != 2)
537 continue;
Wu Fengguangacb05992008-11-22 09:40:54 +0800538 /*
539 * We don't allow modification to these fields:
540 * monitor_name manufacture_id product_id
541 * eld_version edid_version
542 */
Wu Fengguang23ccc2b2009-11-18 12:38:01 +0800543 if (!strcmp(name, "monitor_present"))
544 e->monitor_present = val;
545 else if (!strcmp(name, "eld_valid"))
546 e->eld_valid = val;
547 else if (!strcmp(name, "connection_type"))
Wu Fengguangacdda792008-11-21 11:41:50 +0800548 e->conn_type = val;
549 else if (!strcmp(name, "port_id"))
550 e->port_id = val;
551 else if (!strcmp(name, "support_hdcp"))
552 e->support_hdcp = val;
553 else if (!strcmp(name, "support_ai"))
554 e->support_ai = val;
555 else if (!strcmp(name, "audio_sync_delay"))
556 e->aud_synch_delay = val;
557 else if (!strcmp(name, "speakers"))
558 e->spk_alloc = val;
559 else if (!strcmp(name, "sad_count"))
560 e->sad_count = val;
561 else if (!strncmp(name, "sad", 3)) {
562 sname = name + 4;
563 n = name[3] - '0';
564 if (name[4] >= '0' && name[4] <= '9') {
565 sname++;
566 n = 10 * n + name[4] - '0';
567 }
Roel Kluin78735cf2009-07-29 14:35:20 +0200568 if (n >= ELD_MAX_SAD)
Wu Fengguangacdda792008-11-21 11:41:50 +0800569 continue;
570 if (!strcmp(sname, "_coding_type"))
571 e->sad[n].format = val;
572 else if (!strcmp(sname, "_channels"))
573 e->sad[n].channels = val;
574 else if (!strcmp(sname, "_rates"))
575 e->sad[n].rates = val;
576 else if (!strcmp(sname, "_bits"))
577 e->sad[n].sample_bits = val;
578 else if (!strcmp(sname, "_max_bitrate"))
579 e->sad[n].max_bitrate = val;
Wu Fengguangacb05992008-11-22 09:40:54 +0800580 else if (!strcmp(sname, "_profile"))
581 e->sad[n].profile = val;
Wu Fengguangacdda792008-11-21 11:41:50 +0800582 if (n >= e->sad_count)
583 e->sad_count = n + 1;
584 }
585 }
586}
587
588
Wu Fengguang54a25f82009-10-30 11:44:26 +0100589int snd_hda_eld_proc_new(struct hda_codec *codec, struct hdmi_eld *eld,
590 int index)
Wu Fengguang5f1e71b2008-11-18 11:47:53 +0800591{
592 char name[32];
593 struct snd_info_entry *entry;
594 int err;
595
Wu Fengguang54a25f82009-10-30 11:44:26 +0100596 snprintf(name, sizeof(name), "eld#%d.%d", codec->addr, index);
Wu Fengguang5f1e71b2008-11-18 11:47:53 +0800597 err = snd_card_proc_new(codec->bus->card, name, &entry);
598 if (err < 0)
599 return err;
600
601 snd_info_set_text_ops(entry, eld, hdmi_print_eld_info);
Wu Fengguangacb05992008-11-22 09:40:54 +0800602 entry->c.text.write = hdmi_write_eld_info;
Wu Fengguangacdda792008-11-21 11:41:50 +0800603 entry->mode |= S_IWUSR;
Takashi Iwaif208dba2008-11-21 09:11:50 +0100604 eld->proc_entry = entry;
Wu Fengguangacdda792008-11-21 11:41:50 +0800605
Wu Fengguang5f1e71b2008-11-18 11:47:53 +0800606 return 0;
607}
608
Takashi Iwaif208dba2008-11-21 09:11:50 +0100609void snd_hda_eld_proc_free(struct hda_codec *codec, struct hdmi_eld *eld)
610{
611 if (!codec->bus->shutdown && eld->proc_entry) {
612 snd_device_free(codec->bus->card, eld->proc_entry);
613 eld->proc_entry = NULL;
614 }
615}
616
Takashi Iwai274714f2010-08-19 08:11:53 +0200617#endif /* CONFIG_PROC_FS */
618
Takashi Iwaibbbe3392010-08-13 08:45:23 +0200619/* update PCM info based on ELD */
Stephen Warren2def8172011-06-01 11:14:20 -0600620void snd_hdmi_eld_update_pcm_info(struct hdmi_eld *eld,
621 struct hda_pcm_stream *hinfo)
Takashi Iwaibbbe3392010-08-13 08:45:23 +0200622{
Stephen Warren2def8172011-06-01 11:14:20 -0600623 u32 rates;
624 u64 formats;
625 unsigned int maxbps;
626 unsigned int channels_max;
Takashi Iwaibbbe3392010-08-13 08:45:23 +0200627 int i;
628
Anssi Hannula3dc86422010-12-07 20:56:19 +0200629 /* assume basic audio support (the basic audio flag is not in ELD;
630 * however, all audio capable sinks are required to support basic
631 * audio) */
Stephen Warren2def8172011-06-01 11:14:20 -0600632 rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |
633 SNDRV_PCM_RATE_48000;
634 formats = SNDRV_PCM_FMTBIT_S16_LE;
635 maxbps = 16;
636 channels_max = 2;
Takashi Iwaibbbe3392010-08-13 08:45:23 +0200637 for (i = 0; i < eld->sad_count; i++) {
638 struct cea_sad *a = &eld->sad[i];
Stephen Warren2def8172011-06-01 11:14:20 -0600639 rates |= a->rates;
640 if (a->channels > channels_max)
641 channels_max = a->channels;
Takashi Iwaibbbe3392010-08-13 08:45:23 +0200642 if (a->format == AUDIO_CODING_TYPE_LPCM) {
Takashi Iwaibbbe3392010-08-13 08:45:23 +0200643 if (a->sample_bits & AC_SUPPCM_BITS_20) {
Stephen Warren2def8172011-06-01 11:14:20 -0600644 formats |= SNDRV_PCM_FMTBIT_S32_LE;
645 if (maxbps < 20)
646 maxbps = 20;
Takashi Iwaibbbe3392010-08-13 08:45:23 +0200647 }
648 if (a->sample_bits & AC_SUPPCM_BITS_24) {
Stephen Warren2def8172011-06-01 11:14:20 -0600649 formats |= SNDRV_PCM_FMTBIT_S32_LE;
650 if (maxbps < 24)
651 maxbps = 24;
Takashi Iwaibbbe3392010-08-13 08:45:23 +0200652 }
653 }
654 }
655
Takashi Iwaibbbe3392010-08-13 08:45:23 +0200656 /* restrict the parameters by the values the codec provides */
Stephen Warren2def8172011-06-01 11:14:20 -0600657 hinfo->rates &= rates;
658 hinfo->formats &= formats;
659 hinfo->maxbps = min(hinfo->maxbps, maxbps);
660 hinfo->channels_max = min(hinfo->channels_max, channels_max);
Takashi Iwaibbbe3392010-08-13 08:45:23 +0200661}