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1 /* 1
2 *
3 * patch_intelhdmi.c - Patch for Intel HDMI c
4 *
5 * Copyright(c) 2008 Intel Corporation. All r
6 *
7 * Authors:
8 * Jiang Zhe <zhe.jiang@i
9 * Wu Fengguang <wfg@linu
10 *
11 * Maintained by:
12 * Wu Fengguang <wfg@linu
13 *
14 * This program is free software; you can red
15 * under the terms of the GNU General Public
16 * Software Foundation; either version 2 of t
17 * any later version.
18 *
19 * This program is distributed in the hope th
20 * WITHOUT ANY WARRANTY; without even the imp
21 * or FITNESS FOR A PARTICULAR PURPOSE. See
22 * for more details.
23 *
24 * You should have received a copy of the GNU
25 * along with this program; if not, write to
26 * Inc., 59 Temple Place - Suite 330, Boston,
27 */
28
29 #include <linux/init.h>
30 #include <linux/delay.h>
31 #include <linux/slab.h>
32 #include <sound/core.h>
33 #include "hda_codec.h"
34 #include "hda_local.h"
35
36 #define CVT_NID 0x02 /* audio conve
37 #define PIN_NID 0x03 /* HDMI output
38
39 #define INTEL_HDMI_EVENT_TAG 0x08
40
41 struct intel_hdmi_spec {
42 struct hda_multi_out multiout;
43 struct hda_pcm pcm_rec;
44 struct hdmi_eld sink_eld;
45 };
46
47 static struct hda_verb pinout_enable_verb[] =
48 {PIN_NID, AC_VERB_SET_PIN_WIDGET_CONTR
49 {} /* terminator */
50 };
51
52 static struct hda_verb unsolicited_response_ve
53 {PIN_NID, AC_VERB_SET_UNSOLICITED_ENAB
54
55 {}
56 };
57
58 static struct hda_verb def_chan_map[] = {
59 {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT,
60 {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT,
61 {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT,
62 {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT,
63 {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT,
64 {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT,
65 {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT,
66 {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT,
67 {}
68 };
69
70
71 struct hdmi_audio_infoframe {
72 u8 type; /* 0x84 */
73 u8 ver; /* 0x01 */
74 u8 len; /* 0x0a */
75
76 u8 checksum; /* PB0 */
77 u8 CC02_CT47; /* CC in bits 0:2, CT
78 u8 SS01_SF24;
79 u8 CXT04;
80 u8 CA;
81 u8 LFEPBL01_LSV36_DM_INH7;
82 u8 reserved[5]; /* PB6 - PB10 */
83 };
84
85 /*
86 * CEA speaker placement:
87 *
88 * FLH FCH FRH
89 * FLW FL FLC FC FRC FR FRW
90 *
91 * LFE
92 * TC
93 *
94 * RL RLC RC RRC RR
95 *
96 * The Left/Right Surround channel _notions_ L
97 * CEA RL/RR; The SMPTE channel _assignment_ C
98 */
99 enum cea_speaker_placement {
100 FL = (1 << 0), /* Front Left
101 FC = (1 << 1), /* Front Cente
102 FR = (1 << 2), /* Front Right
103 FLC = (1 << 3), /* Front Left
104 FRC = (1 << 4), /* Front Right
105 RL = (1 << 5), /* Rear Left
106 RC = (1 << 6), /* Rear Center
107 RR = (1 << 7), /* Rear Right
108 RLC = (1 << 8), /* Rear Left C
109 RRC = (1 << 9), /* Rear Right
110 LFE = (1 << 10), /* Low Frequen
111 FLW = (1 << 11), /* Front Left
112 FRW = (1 << 12), /* Front Right
113 FLH = (1 << 13), /* Front Left
114 FCH = (1 << 14), /* Front Cente
115 FRH = (1 << 15), /* Front Right
116 TC = (1 << 16), /* Top Center
117 };
118
119 /*
120 * ELD SA bits in the CEA Speaker Allocation d
121 */
122 static int eld_speaker_allocation_bits[] = {
123 [0] = FL | FR,
124 [1] = LFE,
125 [2] = FC,
126 [3] = RL | RR,
127 [4] = RC,
128 [5] = FLC | FRC,
129 [6] = RLC | RRC,
130 /* the following are not defined in EL
131 [7] = FLW | FRW,
132 [8] = FLH | FRH,
133 [9] = TC,
134 [10] = FCH,
135 };
136
137 struct cea_channel_speaker_allocation {
138 int ca_index;
139 int speakers[8];
140
141 /* derived values, just for convenienc
142 int channels;
143 int spk_mask;
144 };
145
146 /*
147 * This is an ordered list!
148 *
149 * The preceding ones have better chances to b
150 * hdmi_setup_channel_allocation().
151 */
152 static struct cea_channel_speaker_allocation c
153 /* channel: 8 7
154 { .ca_index = 0x00, .speakers = { 0, 0,
155 /* 2.1 */
156 { .ca_index = 0x01, .speakers = { 0, 0,
157 /* Dolby Surr
158 { .ca_index = 0x02, .speakers = { 0, 0,
159 { .ca_index = 0x03, .speakers = { 0, 0,
160 { .ca_index = 0x04, .speakers = { 0, 0,
161 { .ca_index = 0x05, .speakers = { 0, 0,
162 { .ca_index = 0x06, .speakers = { 0, 0,
163 { .ca_index = 0x07, .speakers = { 0, 0,
164 { .ca_index = 0x08, .speakers = { 0, 0,
165 { .ca_index = 0x09, .speakers = { 0, 0,
166 { .ca_index = 0x0a, .speakers = { 0, 0,
167 /* 5.1 */
168 { .ca_index = 0x0b, .speakers = { 0, 0,
169 { .ca_index = 0x0c, .speakers = { 0, RC,
170 { .ca_index = 0x0d, .speakers = { 0, RC,
171 { .ca_index = 0x0e, .speakers = { 0, RC,
172 /* 6.1 */
173 { .ca_index = 0x0f, .speakers = { 0, RC,
174 { .ca_index = 0x10, .speakers = { RRC, RLC,
175 { .ca_index = 0x11, .speakers = { RRC, RLC,
176 { .ca_index = 0x12, .speakers = { RRC, RLC,
177 /* 7.1 */
178 { .ca_index = 0x13, .speakers = { RRC, RLC,
179 { .ca_index = 0x14, .speakers = { FRC, FLC,
180 { .ca_index = 0x15, .speakers = { FRC, FLC,
181 { .ca_index = 0x16, .speakers = { FRC, FLC,
182 { .ca_index = 0x17, .speakers = { FRC, FLC,
183 { .ca_index = 0x18, .speakers = { FRC, FLC,
184 { .ca_index = 0x19, .speakers = { FRC, FLC,
185 { .ca_index = 0x1a, .speakers = { FRC, FLC,
186 { .ca_index = 0x1b, .speakers = { FRC, FLC,
187 { .ca_index = 0x1c, .speakers = { FRC, FLC,
188 { .ca_index = 0x1d, .speakers = { FRC, FLC,
189 { .ca_index = 0x1e, .speakers = { FRC, FLC,
190 { .ca_index = 0x1f, .speakers = { FRC, FLC,
191 { .ca_index = 0x20, .speakers = { 0, FCH,
192 { .ca_index = 0x21, .speakers = { 0, FCH,
193 { .ca_index = 0x22, .speakers = { TC, 0,
194 { .ca_index = 0x23, .speakers = { TC, 0,
195 { .ca_index = 0x24, .speakers = { FRH, FLH,
196 { .ca_index = 0x25, .speakers = { FRH, FLH,
197 { .ca_index = 0x26, .speakers = { FRW, FLW,
198 { .ca_index = 0x27, .speakers = { FRW, FLW,
199 { .ca_index = 0x28, .speakers = { TC, RC,
200 { .ca_index = 0x29, .speakers = { TC, RC,
201 { .ca_index = 0x2a, .speakers = { FCH, RC,
202 { .ca_index = 0x2b, .speakers = { FCH, RC,
203 { .ca_index = 0x2c, .speakers = { TC, FCH,
204 { .ca_index = 0x2d, .speakers = { TC, FCH,
205 { .ca_index = 0x2e, .speakers = { FRH, FLH,
206 { .ca_index = 0x2f, .speakers = { FRH, FLH,
207 { .ca_index = 0x30, .speakers = { FRW, FLW,
208 { .ca_index = 0x31, .speakers = { FRW, FLW,
209 };
210
211 /*
212 * HDMI routines
213 */
214
215 #ifdef BE_PARANOID
216 static void hdmi_get_dip_index(struct hda_code
217 int *packet_in
218 {
219 int val;
220
221 val = snd_hda_codec_read(codec, nid, 0
222
223 *packet_index = val >> 5;
224 *byte_index = val & 0x1f;
225 }
226 #endif
227
228 static void hdmi_set_dip_index(struct hda_code
229 int packet_ind
230 {
231 int val;
232
233 val = (packet_index << 5) | (byte_inde
234
235 snd_hda_codec_write(codec, nid, 0, AC_
236 }
237
238 static void hdmi_write_dip_byte(struct hda_cod
239 unsigned char
240 {
241 snd_hda_codec_write(codec, nid, 0, AC_
242 }
243
244 static void hdmi_enable_output(struct hda_code
245 {
246 /* Unmute */
247 if (get_wcaps(codec, PIN_NID) & AC_WCA
248 snd_hda_codec_write(codec, PIN
249 AC_VERB_SET_AM
250 /* Enable pin out */
251 snd_hda_sequence_write(codec, pinout_e
252 }
253
254 /*
255 * Enable Audio InfoFrame Transmission
256 */
257 static void hdmi_start_infoframe_trans(struct
258 {
259 hdmi_set_dip_index(codec, PIN_NID, 0x0
260 snd_hda_codec_write(codec, PIN_NID, 0,
261
262 }
263
264 /*
265 * Disable Audio InfoFrame Transmission
266 */
267 static void hdmi_stop_infoframe_trans(struct h
268 {
269 hdmi_set_dip_index(codec, PIN_NID, 0x0
270 snd_hda_codec_write(codec, PIN_NID, 0,
271
272 }
273
274 static int hdmi_get_channel_count(struct hda_c
275 {
276 return 1 + snd_hda_codec_read(codec, C
277 AC_VER
278 }
279
280 static void hdmi_set_channel_count(struct hda_
281 {
282 snd_hda_codec_write(codec, CVT_NID, 0,
283 AC_VER
284
285 if (chs != hdmi_get_channel_count(code
286 snd_printd(KERN_INFO "HDMI cha
287 chs, h
288 }
289
290 static void hdmi_debug_channel_mapping(struct
291 {
292 #ifdef CONFIG_SND_DEBUG_VERBOSE
293 int i;
294 int slot;
295
296 for (i = 0; i < 8; i++) {
297 slot = snd_hda_codec_read(code
298
299 printk(KERN_DEBUG "HDMI: ASP c
300
301 }
302 #endif
303 }
304
305 static void hdmi_parse_eld(struct hda_codec *c
306 {
307 struct intel_hdmi_spec *spec = codec->
308 struct hdmi_eld *eld = &spec->sink_eld
309
310 if (!snd_hdmi_get_eld(eld, codec, PIN_
311 snd_hdmi_show_eld(eld);
312 }
313
314
315 /*
316 * Audio InfoFrame routines
317 */
318
319 static void hdmi_debug_dip_size(struct hda_cod
320 {
321 #ifdef CONFIG_SND_DEBUG_VERBOSE
322 int i;
323 int size;
324
325 size = snd_hdmi_get_eld_size(codec, PI
326 printk(KERN_DEBUG "HDMI: ELD buf size
327
328 for (i = 0; i < 8; i++) {
329 size = snd_hda_codec_read(code
330
331 printk(KERN_DEBUG "HDMI: DIP G
332 }
333 #endif
334 }
335
336 static void hdmi_clear_dip_buffers(struct hda_
337 {
338 #ifdef BE_PARANOID
339 int i, j;
340 int size;
341 int pi, bi;
342 for (i = 0; i < 8; i++) {
343 size = snd_hda_codec_read(code
344
345 if (size == 0)
346 continue;
347
348 hdmi_set_dip_index(codec, PIN_
349 for (j = 1; j < 1000; j++) {
350 hdmi_write_dip_byte(co
351 hdmi_get_dip_index(cod
352 if (pi != i)
353 snd_printd(KER
354
355 if (bi == 0) /* byte i
356 break;
357 }
358 snd_printd(KERN_INFO
359 "HDMI: DIP GP[%d] buf
360 i, size, j);
361 }
362 #endif
363 }
364
365 static void hdmi_fill_audio_infoframe(struct h
366 struct
367 {
368 u8 *params = (u8 *)ai;
369 u8 sum = 0;
370 int i;
371
372 hdmi_debug_dip_size(codec);
373 hdmi_clear_dip_buffers(codec); /* be p
374
375 for (i = 0; i < sizeof(ai); i++)
376 sum += params[i];
377 ai->checksum = - sum;
378
379 hdmi_set_dip_index(codec, PIN_NID, 0x0
380 for (i = 0; i < sizeof(ai); i++)
381 hdmi_write_dip_byte(codec, PIN
382 }
383
384 /*
385 * Compute derived values in channel_allocatio
386 */
387 static void init_channel_allocations(void)
388 {
389 int i, j;
390 struct cea_channel_speaker_allocation
391
392 for (i = 0; i < ARRAY_SIZE(channel_all
393 p = channel_allocations + i;
394 p->channels = 0;
395 p->spk_mask = 0;
396 for (j = 0; j < ARRAY_SIZE(p->
397 if (p->speakers[j]) {
398 p->channels++;
399 p->spk_mask |=
400 }
401 }
402 }
403
404 /*
405 * The transformation takes two steps:
406 *
407 * eld->spk_alloc => (eld_speaker_allocat
408 * spk_mask => (channel_allocations
409 *
410 * TODO: it could select the wrong CA from mul
411 */
412 static int hdmi_setup_channel_allocation(struc
413 struc
414 {
415 struct intel_hdmi_spec *spec = codec->
416 struct hdmi_eld *eld = &spec->sink_eld
417 int i;
418 int spk_mask = 0;
419 int channels = 1 + (ai->CC02_CT47 & 0x
420 char buf[SND_PRINT_CHANNEL_ALLOCATION_
421
422 /*
423 * CA defaults to 0 for basic stereo a
424 */
425 if (channels <= 2)
426 return 0;
427
428 /*
429 * HDMI sink's ELD info cannot always
430 * in console or for audio devices. As
431 * configuration, to _not_ prohibit mu
432 */
433 if (!eld->spk_alloc)
434 eld->spk_alloc = 0xffff;
435
436 /*
437 * expand ELD's speaker allocation mas
438 *
439 * ELD tells the speaker mask in a com
440 * expand ELD's notions to match the o
441 */
442 for (i = 0; i < ARRAY_SIZE(eld_speaker
443 if (eld->spk_alloc & (1 << i))
444 spk_mask |= eld_speake
445 }
446
447 /* search for the first working match
448 for (i = 0; i < ARRAY_SIZE(channel_all
449 if (channels == channel_alloca
450 (spk_mask & channel_alloca
451 channel_alloca
452 ai->CA = channel_alloc
453 break;
454 }
455 }
456
457 snd_print_channel_allocation(eld->spk_
458 snd_printdd(KERN_INFO
459 "HDMI: select CA 0x%x
460 ai->CA, channels, buf)
461
462 return ai->CA;
463 }
464
465 static void hdmi_setup_channel_mapping(struct
466 struct
467 {
468 if (!ai->CA)
469 return;
470
471 /*
472 * TODO: adjust channel mapping if nec
473 * ALSA sequence is front/surr/clfe/si
474 */
475
476 snd_hda_sequence_write(codec, def_chan
477 hdmi_debug_channel_mapping(codec);
478 }
479
480
481 static void hdmi_setup_audio_infoframe(struct
482 struct
483 {
484 struct hdmi_audio_infoframe ai = {
485 .type = 0x84,
486 .ver = 0x01,
487 .len = 0x0a,
488 .CC02_CT47 = substream->r
489 };
490
491 hdmi_setup_channel_allocation(codec, &
492 hdmi_setup_channel_mapping(codec, &ai)
493
494 hdmi_fill_audio_infoframe(codec, &ai);
495 hdmi_start_infoframe_trans(codec);
496 }
497
498
499 /*
500 * Unsolicited events
501 */
502
503 static void hdmi_intrinsic_event(struct hda_co
504 {
505 int pind = !!(res & AC_UNSOL_RES_PD);
506 int eldv = !!(res & AC_UNSOL_RES_ELDV)
507
508 printk(KERN_INFO
509 "HDMI hot plug event: Presence
510 pind, eldv);
511
512 if (pind && eldv) {
513 hdmi_parse_eld(codec);
514 /* TODO: do real things about
515 }
516 }
517
518 static void hdmi_non_intrinsic_event(struct hd
519 {
520 int subtag = (res & AC_UNSOL_RES_SUBTA
521 int cp_state = !!(res & AC_UNSOL_RES_C
522 int cp_ready = !!(res & AC_UNSOL_RES_C
523
524 printk(KERN_INFO
525 "HDMI content protection event
526 subtag,
527 cp_state,
528 cp_ready);
529
530 /* TODO */
531 if (cp_state)
532 ;
533 if (cp_ready)
534 ;
535 }
536
537
538 static void intel_hdmi_unsol_event(struct hda_
539 {
540 int tag = res >> AC_UNSOL_RES_TAG_SHIF
541 int subtag = (res & AC_UNSOL_RES_SUBTA
542
543 if (tag != INTEL_HDMI_EVENT_TAG) {
544 snd_printd(KERN_INFO "Unexpect
545 return;
546 }
547
548 if (subtag == 0)
549 hdmi_intrinsic_event(codec, re
550 else
551 hdmi_non_intrinsic_event(codec
552 }
553
554 /*
555 * Callbacks
556 */
557
558 static int intel_hdmi_playback_pcm_open(struct
559 struct
560 struct
561 {
562 struct intel_hdmi_spec *spec = codec->
563
564 return snd_hda_multi_out_dig_open(code
565 }
566
567 static int intel_hdmi_playback_pcm_close(struc
568 struc
569 struc
570 {
571 struct intel_hdmi_spec *spec = codec->
572
573 hdmi_stop_infoframe_trans(codec);
574
575 return snd_hda_multi_out_dig_close(cod
576 }
577
578 static int intel_hdmi_playback_pcm_prepare(str
579 str
580 uns
581 uns
582 str
583 {
584 struct intel_hdmi_spec *spec = codec->
585
586 snd_hda_multi_out_dig_prepare(codec, &
587 f
588
589 hdmi_set_channel_count(codec, substrea
590
591 hdmi_setup_audio_infoframe(codec, subs
592
593 return 0;
594 }
595
596 static struct hda_pcm_stream intel_hdmi_pcm_pl
597 .substreams = 1,
598 .channels_min = 2,
599 .channels_max = 8,
600 .nid = CVT_NID, /* NID to query format
601 .ops = {
602 .open = intel_hdmi_playback
603 .close = intel_hdmi_playback
604 .prepare = intel_hdmi_playback
605 },
606 };
607
608 static int intel_hdmi_build_pcms(struct hda_co
609 {
610 struct intel_hdmi_spec *spec = codec->
611 struct hda_pcm *info = &spec->pcm_rec;
612
613 codec->num_pcms = 1;
614 codec->pcm_info = info;
615
616 info->name = "INTEL HDMI";
617 info->pcm_type = HDA_PCM_TYPE_HDMI;
618 info->stream[SNDRV_PCM_STREAM_PLAYBACK
619
620 return 0;
621 }
622
623 static int intel_hdmi_build_controls(struct hd
624 {
625 struct intel_hdmi_spec *spec = codec->
626 int err;
627
628 err = snd_hda_create_spdif_out_ctls(co
629 if (err < 0)
630 return err;
631
632 return 0;
633 }
634
635 static int intel_hdmi_init(struct hda_codec *c
636 {
637 hdmi_enable_output(codec);
638
639 snd_hda_sequence_write(codec, unsolici
640
641 return 0;
642 }
643
644 static void intel_hdmi_free(struct hda_codec *
645 {
646 struct intel_hdmi_spec *spec = codec->
647
648 snd_hda_eld_proc_free(codec, &spec->si
649 kfree(spec);
650 }
651
652 static struct hda_codec_ops intel_hdmi_patch_o
653 .init = intel_hdmi_i
654 .free = intel_hdmi_f
655 .build_pcms = intel_hdmi_b
656 .build_controls = intel_hdmi_b
657 .unsol_event = intel_hdmi_u
658 };
659
660 static int patch_intel_hdmi(struct hda_codec *
661 {
662 struct intel_hdmi_spec *spec;
663
664 spec = kzalloc(sizeof(*spec), GFP_KERN
665 if (spec == NULL)
666 return -ENOMEM;
667
668 spec->multiout.num_dacs = 0; /* n
669 spec->multiout.max_channels = 8;
670 spec->multiout.dig_out_nid = CVT_NID;
671
672 codec->spec = spec;
673 codec->patch_ops = intel_hdmi_patch_op
674
675 snd_hda_eld_proc_new(codec, &spec->sin
676
677 init_channel_allocations();
678
679 return 0;
680 }
681
682 static struct hda_codec_preset snd_hda_preset_
683 { .id = 0x808629fb, .name = "G45 DEVCL
684 { .id = 0x80862801, .name = "G45 DEVBL
685 { .id = 0x80862802, .name = "G45 DEVCT
686 { .id = 0x80862803, .name = "G45 DEVEL
687 { .id = 0x80862804, .name = "G45 DEVIB
688 { .id = 0x10951392, .name = "SiI1392 H
689 {} /* terminator */
690 };
691
692 MODULE_ALIAS("snd-hda-codec-id:808629fb");
693 MODULE_ALIAS("snd-hda-codec-id:80862801");
694 MODULE_ALIAS("snd-hda-codec-id:80862802");
695 MODULE_ALIAS("snd-hda-codec-id:80862803");
696 MODULE_ALIAS("snd-hda-codec-id:80862804");
697 MODULE_ALIAS("snd-hda-codec-id:10951392");
698
699 MODULE_LICENSE("GPL");
700 MODULE_DESCRIPTION("Intel HDMI HD-audio codec"
701
702 static struct hda_codec_preset_list intel_list
703 .preset = snd_hda_preset_intelhdmi,
704 .owner = THIS_MODULE,
705 };
706
707 static int __init patch_intelhdmi_init(void)
708 {
709 return snd_hda_add_codec_preset(&intel
710 }
711
712 static void __exit patch_intelhdmi_exit(void)
713 {
714 snd_hda_delete_codec_preset(&intel_lis
715 }
716
717 module_init(patch_intelhdmi_init)
718 module_exit(patch_intelhdmi_exit)
719
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