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[mirror_ubuntu-artful-kernel.git] / sound / pci / hda / patch_intelhdmi.c
1 /*
2 *
3 * patch_intelhdmi.c - Patch for Intel HDMI codecs
4 *
5 * Copyright(c) 2008 Intel Corporation. All rights reserved.
6 *
7 * Authors:
8 * Jiang Zhe <zhe.jiang@intel.com>
9 * Wu Fengguang <wfg@linux.intel.com>
10 *
11 * Maintained by:
12 * Wu Fengguang <wfg@linux.intel.com>
13 *
14 * This program is free software; you can redistribute it and/or modify it
15 * under the terms of the GNU General Public License as published by the Free
16 * Software Foundation; either version 2 of the License, or (at your option)
17 * any later version.
18 *
19 * This program is distributed in the hope that it will be useful, but
20 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
21 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
22 * for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software Foundation,
26 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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 /*
37 * The HDMI/DisplayPort configuration can be highly dynamic. A graphics device
38 * could support two independent pipes, each of them can be connected to one or
39 * more ports (DVI, HDMI or DisplayPort).
40 *
41 * The HDA correspondence of pipes/ports are converter/pin nodes.
42 */
43 #define INTEL_HDMI_CVTS 2
44 #define INTEL_HDMI_PINS 3
45
46 static char *intel_hdmi_pcm_names[INTEL_HDMI_CVTS] = {
47 "INTEL HDMI 0",
48 "INTEL HDMI 1",
49 };
50
51 struct intel_hdmi_spec {
52 int num_cvts;
53 int num_pins;
54 hda_nid_t cvt[INTEL_HDMI_CVTS+1]; /* audio sources */
55 hda_nid_t pin[INTEL_HDMI_PINS+1]; /* audio sinks */
56
57 /*
58 * source connection for each pin
59 */
60 hda_nid_t pin_cvt[INTEL_HDMI_PINS+1];
61
62 /*
63 * HDMI sink attached to each pin
64 */
65 struct hdmi_eld sink_eld[INTEL_HDMI_PINS];
66
67 /*
68 * export one pcm per pipe
69 */
70 struct hda_pcm pcm_rec[INTEL_HDMI_CVTS];
71 };
72
73 struct hdmi_audio_infoframe {
74 u8 type; /* 0x84 */
75 u8 ver; /* 0x01 */
76 u8 len; /* 0x0a */
77
78 u8 checksum; /* PB0 */
79 u8 CC02_CT47; /* CC in bits 0:2, CT in 4:7 */
80 u8 SS01_SF24;
81 u8 CXT04;
82 u8 CA;
83 u8 LFEPBL01_LSV36_DM_INH7;
84 u8 reserved[5]; /* PB6 - PB10 */
85 };
86
87 /*
88 * CEA speaker placement:
89 *
90 * FLH FCH FRH
91 * FLW FL FLC FC FRC FR FRW
92 *
93 * LFE
94 * TC
95 *
96 * RL RLC RC RRC RR
97 *
98 * The Left/Right Surround channel _notions_ LS/RS in SMPTE 320M corresponds to
99 * CEA RL/RR; The SMPTE channel _assignment_ C/LFE is swapped to CEA LFE/FC.
100 */
101 enum cea_speaker_placement {
102 FL = (1 << 0), /* Front Left */
103 FC = (1 << 1), /* Front Center */
104 FR = (1 << 2), /* Front Right */
105 FLC = (1 << 3), /* Front Left Center */
106 FRC = (1 << 4), /* Front Right Center */
107 RL = (1 << 5), /* Rear Left */
108 RC = (1 << 6), /* Rear Center */
109 RR = (1 << 7), /* Rear Right */
110 RLC = (1 << 8), /* Rear Left Center */
111 RRC = (1 << 9), /* Rear Right Center */
112 LFE = (1 << 10), /* Low Frequency Effect */
113 FLW = (1 << 11), /* Front Left Wide */
114 FRW = (1 << 12), /* Front Right Wide */
115 FLH = (1 << 13), /* Front Left High */
116 FCH = (1 << 14), /* Front Center High */
117 FRH = (1 << 15), /* Front Right High */
118 TC = (1 << 16), /* Top Center */
119 };
120
121 /*
122 * ELD SA bits in the CEA Speaker Allocation data block
123 */
124 static int eld_speaker_allocation_bits[] = {
125 [0] = FL | FR,
126 [1] = LFE,
127 [2] = FC,
128 [3] = RL | RR,
129 [4] = RC,
130 [5] = FLC | FRC,
131 [6] = RLC | RRC,
132 /* the following are not defined in ELD yet */
133 [7] = FLW | FRW,
134 [8] = FLH | FRH,
135 [9] = TC,
136 [10] = FCH,
137 };
138
139 struct cea_channel_speaker_allocation {
140 int ca_index;
141 int speakers[8];
142
143 /* derived values, just for convenience */
144 int channels;
145 int spk_mask;
146 };
147
148 /*
149 * This is an ordered list!
150 *
151 * The preceding ones have better chances to be selected by
152 * hdmi_setup_channel_allocation().
153 */
154 static struct cea_channel_speaker_allocation channel_allocations[] = {
155 /* channel: 8 7 6 5 4 3 2 1 */
156 { .ca_index = 0x00, .speakers = { 0, 0, 0, 0, 0, 0, FR, FL } },
157 /* 2.1 */
158 { .ca_index = 0x01, .speakers = { 0, 0, 0, 0, 0, LFE, FR, FL } },
159 /* Dolby Surround */
160 { .ca_index = 0x02, .speakers = { 0, 0, 0, 0, FC, 0, FR, FL } },
161 { .ca_index = 0x03, .speakers = { 0, 0, 0, 0, FC, LFE, FR, FL } },
162 { .ca_index = 0x04, .speakers = { 0, 0, 0, RC, 0, 0, FR, FL } },
163 { .ca_index = 0x05, .speakers = { 0, 0, 0, RC, 0, LFE, FR, FL } },
164 { .ca_index = 0x06, .speakers = { 0, 0, 0, RC, FC, 0, FR, FL } },
165 { .ca_index = 0x07, .speakers = { 0, 0, 0, RC, FC, LFE, FR, FL } },
166 { .ca_index = 0x08, .speakers = { 0, 0, RR, RL, 0, 0, FR, FL } },
167 { .ca_index = 0x09, .speakers = { 0, 0, RR, RL, 0, LFE, FR, FL } },
168 { .ca_index = 0x0a, .speakers = { 0, 0, RR, RL, FC, 0, FR, FL } },
169 /* 5.1 */
170 { .ca_index = 0x0b, .speakers = { 0, 0, RR, RL, FC, LFE, FR, FL } },
171 { .ca_index = 0x0c, .speakers = { 0, RC, RR, RL, 0, 0, FR, FL } },
172 { .ca_index = 0x0d, .speakers = { 0, RC, RR, RL, 0, LFE, FR, FL } },
173 { .ca_index = 0x0e, .speakers = { 0, RC, RR, RL, FC, 0, FR, FL } },
174 /* 6.1 */
175 { .ca_index = 0x0f, .speakers = { 0, RC, RR, RL, FC, LFE, FR, FL } },
176 { .ca_index = 0x10, .speakers = { RRC, RLC, RR, RL, 0, 0, FR, FL } },
177 { .ca_index = 0x11, .speakers = { RRC, RLC, RR, RL, 0, LFE, FR, FL } },
178 { .ca_index = 0x12, .speakers = { RRC, RLC, RR, RL, FC, 0, FR, FL } },
179 /* 7.1 */
180 { .ca_index = 0x13, .speakers = { RRC, RLC, RR, RL, FC, LFE, FR, FL } },
181 { .ca_index = 0x14, .speakers = { FRC, FLC, 0, 0, 0, 0, FR, FL } },
182 { .ca_index = 0x15, .speakers = { FRC, FLC, 0, 0, 0, LFE, FR, FL } },
183 { .ca_index = 0x16, .speakers = { FRC, FLC, 0, 0, FC, 0, FR, FL } },
184 { .ca_index = 0x17, .speakers = { FRC, FLC, 0, 0, FC, LFE, FR, FL } },
185 { .ca_index = 0x18, .speakers = { FRC, FLC, 0, RC, 0, 0, FR, FL } },
186 { .ca_index = 0x19, .speakers = { FRC, FLC, 0, RC, 0, LFE, FR, FL } },
187 { .ca_index = 0x1a, .speakers = { FRC, FLC, 0, RC, FC, 0, FR, FL } },
188 { .ca_index = 0x1b, .speakers = { FRC, FLC, 0, RC, FC, LFE, FR, FL } },
189 { .ca_index = 0x1c, .speakers = { FRC, FLC, RR, RL, 0, 0, FR, FL } },
190 { .ca_index = 0x1d, .speakers = { FRC, FLC, RR, RL, 0, LFE, FR, FL } },
191 { .ca_index = 0x1e, .speakers = { FRC, FLC, RR, RL, FC, 0, FR, FL } },
192 { .ca_index = 0x1f, .speakers = { FRC, FLC, RR, RL, FC, LFE, FR, FL } },
193 { .ca_index = 0x20, .speakers = { 0, FCH, RR, RL, FC, 0, FR, FL } },
194 { .ca_index = 0x21, .speakers = { 0, FCH, RR, RL, FC, LFE, FR, FL } },
195 { .ca_index = 0x22, .speakers = { TC, 0, RR, RL, FC, 0, FR, FL } },
196 { .ca_index = 0x23, .speakers = { TC, 0, RR, RL, FC, LFE, FR, FL } },
197 { .ca_index = 0x24, .speakers = { FRH, FLH, RR, RL, 0, 0, FR, FL } },
198 { .ca_index = 0x25, .speakers = { FRH, FLH, RR, RL, 0, LFE, FR, FL } },
199 { .ca_index = 0x26, .speakers = { FRW, FLW, RR, RL, 0, 0, FR, FL } },
200 { .ca_index = 0x27, .speakers = { FRW, FLW, RR, RL, 0, LFE, FR, FL } },
201 { .ca_index = 0x28, .speakers = { TC, RC, RR, RL, FC, 0, FR, FL } },
202 { .ca_index = 0x29, .speakers = { TC, RC, RR, RL, FC, LFE, FR, FL } },
203 { .ca_index = 0x2a, .speakers = { FCH, RC, RR, RL, FC, 0, FR, FL } },
204 { .ca_index = 0x2b, .speakers = { FCH, RC, RR, RL, FC, LFE, FR, FL } },
205 { .ca_index = 0x2c, .speakers = { TC, FCH, RR, RL, FC, 0, FR, FL } },
206 { .ca_index = 0x2d, .speakers = { TC, FCH, RR, RL, FC, LFE, FR, FL } },
207 { .ca_index = 0x2e, .speakers = { FRH, FLH, RR, RL, FC, 0, FR, FL } },
208 { .ca_index = 0x2f, .speakers = { FRH, FLH, RR, RL, FC, LFE, FR, FL } },
209 { .ca_index = 0x30, .speakers = { FRW, FLW, RR, RL, FC, 0, FR, FL } },
210 { .ca_index = 0x31, .speakers = { FRW, FLW, RR, RL, FC, LFE, FR, FL } },
211 };
212
213
214 /*
215 * HDA/HDMI auto parsing
216 */
217
218 static int hda_node_index(hda_nid_t *nids, hda_nid_t nid)
219 {
220 int i;
221
222 for (i = 0; nids[i]; i++)
223 if (nids[i] == nid)
224 return i;
225
226 snd_printk(KERN_WARNING "HDMI: nid %d not registered\n", nid);
227 return -EINVAL;
228 }
229
230 static int intel_hdmi_read_pin_conn(struct hda_codec *codec, hda_nid_t pin_nid)
231 {
232 struct intel_hdmi_spec *spec = codec->spec;
233 hda_nid_t conn_list[HDA_MAX_CONNECTIONS];
234 int conn_len, curr;
235 int index;
236
237 if (!(get_wcaps(codec, pin_nid) & AC_WCAP_CONN_LIST)) {
238 snd_printk(KERN_WARNING
239 "HDMI: pin %d wcaps %#x "
240 "does not support connection list\n",
241 pin_nid, get_wcaps(codec, pin_nid));
242 return -EINVAL;
243 }
244
245 conn_len = snd_hda_get_connections(codec, pin_nid, conn_list,
246 HDA_MAX_CONNECTIONS);
247 if (conn_len > 1)
248 curr = snd_hda_codec_read(codec, pin_nid, 0,
249 AC_VERB_GET_CONNECT_SEL, 0);
250 else
251 curr = 0;
252
253 index = hda_node_index(spec->pin, pin_nid);
254 if (index < 0)
255 return -EINVAL;
256
257 spec->pin_cvt[index] = conn_list[curr];
258
259 return 0;
260 }
261
262 static void hdmi_get_show_eld(struct hda_codec *codec, hda_nid_t pin_nid,
263 struct hdmi_eld *eld)
264 {
265 if (!snd_hdmi_get_eld(eld, codec, pin_nid))
266 snd_hdmi_show_eld(eld);
267 }
268
269 static void hdmi_present_sense(struct hda_codec *codec, hda_nid_t pin_nid,
270 struct hdmi_eld *eld)
271 {
272 int present = snd_hda_pin_sense(codec, pin_nid);
273
274 eld->monitor_present = !!(present & AC_PINSENSE_PRESENCE);
275 eld->eld_valid = !!(present & AC_PINSENSE_ELDV);
276
277 if (present & AC_PINSENSE_ELDV)
278 hdmi_get_show_eld(codec, pin_nid, eld);
279 }
280
281 static int intel_hdmi_add_pin(struct hda_codec *codec, hda_nid_t pin_nid)
282 {
283 struct intel_hdmi_spec *spec = codec->spec;
284
285 if (spec->num_pins >= INTEL_HDMI_PINS) {
286 snd_printk(KERN_WARNING
287 "HDMI: no space for pin %d \n", pin_nid);
288 return -EINVAL;
289 }
290
291 hdmi_present_sense(codec, pin_nid, &spec->sink_eld[spec->num_pins]);
292
293 spec->pin[spec->num_pins] = pin_nid;
294 spec->num_pins++;
295
296 /*
297 * It is assumed that converter nodes come first in the node list and
298 * hence have been registered and usable now.
299 */
300 return intel_hdmi_read_pin_conn(codec, pin_nid);
301 }
302
303 static int intel_hdmi_add_cvt(struct hda_codec *codec, hda_nid_t nid)
304 {
305 struct intel_hdmi_spec *spec = codec->spec;
306
307 if (spec->num_cvts >= INTEL_HDMI_CVTS) {
308 snd_printk(KERN_WARNING
309 "HDMI: no space for converter %d \n", nid);
310 return -EINVAL;
311 }
312
313 spec->cvt[spec->num_cvts] = nid;
314 spec->num_cvts++;
315
316 return 0;
317 }
318
319 static int intel_hdmi_parse_codec(struct hda_codec *codec)
320 {
321 hda_nid_t nid;
322 int i, nodes;
323
324 nodes = snd_hda_get_sub_nodes(codec, codec->afg, &nid);
325 if (!nid || nodes < 0) {
326 snd_printk(KERN_WARNING "HDMI: failed to get afg sub nodes\n");
327 return -EINVAL;
328 }
329
330 for (i = 0; i < nodes; i++, nid++) {
331 unsigned int caps;
332 unsigned int type;
333
334 caps = snd_hda_param_read(codec, nid, AC_PAR_AUDIO_WIDGET_CAP);
335 type = get_wcaps_type(caps);
336
337 if (!(caps & AC_WCAP_DIGITAL))
338 continue;
339
340 switch (type) {
341 case AC_WID_AUD_OUT:
342 if (intel_hdmi_add_cvt(codec, nid) < 0)
343 return -EINVAL;
344 break;
345 case AC_WID_PIN:
346 caps = snd_hda_param_read(codec, nid, AC_PAR_PIN_CAP);
347 if (!(caps & AC_PINCAP_HDMI))
348 continue;
349 if (intel_hdmi_add_pin(codec, nid) < 0)
350 return -EINVAL;
351 break;
352 }
353 }
354
355 return 0;
356 }
357
358 /*
359 * HDMI routines
360 */
361
362 #ifdef BE_PARANOID
363 static void hdmi_get_dip_index(struct hda_codec *codec, hda_nid_t pin_nid,
364 int *packet_index, int *byte_index)
365 {
366 int val;
367
368 val = snd_hda_codec_read(codec, pin_nid, 0,
369 AC_VERB_GET_HDMI_DIP_INDEX, 0);
370
371 *packet_index = val >> 5;
372 *byte_index = val & 0x1f;
373 }
374 #endif
375
376 static void hdmi_set_dip_index(struct hda_codec *codec, hda_nid_t pin_nid,
377 int packet_index, int byte_index)
378 {
379 int val;
380
381 val = (packet_index << 5) | (byte_index & 0x1f);
382
383 snd_hda_codec_write(codec, pin_nid, 0, AC_VERB_SET_HDMI_DIP_INDEX, val);
384 }
385
386 static void hdmi_write_dip_byte(struct hda_codec *codec, hda_nid_t pin_nid,
387 unsigned char val)
388 {
389 snd_hda_codec_write(codec, pin_nid, 0, AC_VERB_SET_HDMI_DIP_DATA, val);
390 }
391
392 static void hdmi_enable_output(struct hda_codec *codec, hda_nid_t pin_nid)
393 {
394 /* Unmute */
395 if (get_wcaps(codec, pin_nid) & AC_WCAP_OUT_AMP)
396 snd_hda_codec_write(codec, pin_nid, 0,
397 AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE);
398 /* Enable pin out */
399 snd_hda_codec_write(codec, pin_nid, 0,
400 AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT);
401 }
402
403 /*
404 * Enable Audio InfoFrame Transmission
405 */
406 static void hdmi_start_infoframe_trans(struct hda_codec *codec,
407 hda_nid_t pin_nid)
408 {
409 hdmi_set_dip_index(codec, pin_nid, 0x0, 0x0);
410 snd_hda_codec_write(codec, pin_nid, 0, AC_VERB_SET_HDMI_DIP_XMIT,
411 AC_DIPXMIT_BEST);
412 }
413
414 /*
415 * Disable Audio InfoFrame Transmission
416 */
417 static void hdmi_stop_infoframe_trans(struct hda_codec *codec,
418 hda_nid_t pin_nid)
419 {
420 hdmi_set_dip_index(codec, pin_nid, 0x0, 0x0);
421 snd_hda_codec_write(codec, pin_nid, 0, AC_VERB_SET_HDMI_DIP_XMIT,
422 AC_DIPXMIT_DISABLE);
423 }
424
425 static int hdmi_get_channel_count(struct hda_codec *codec, hda_nid_t nid)
426 {
427 return 1 + snd_hda_codec_read(codec, nid, 0,
428 AC_VERB_GET_CVT_CHAN_COUNT, 0);
429 }
430
431 static void hdmi_set_channel_count(struct hda_codec *codec,
432 hda_nid_t nid, int chs)
433 {
434 if (chs != hdmi_get_channel_count(codec, nid))
435 snd_hda_codec_write(codec, nid, 0,
436 AC_VERB_SET_CVT_CHAN_COUNT, chs - 1);
437 }
438
439 static void hdmi_debug_channel_mapping(struct hda_codec *codec, hda_nid_t nid)
440 {
441 #ifdef CONFIG_SND_DEBUG_VERBOSE
442 int i;
443 int slot;
444
445 for (i = 0; i < 8; i++) {
446 slot = snd_hda_codec_read(codec, nid, 0,
447 AC_VERB_GET_HDMI_CHAN_SLOT, i);
448 printk(KERN_DEBUG "HDMI: ASP channel %d => slot %d\n",
449 slot >> 4, slot & 0xf);
450 }
451 #endif
452 }
453
454
455 /*
456 * Audio InfoFrame routines
457 */
458
459 static void hdmi_debug_dip_size(struct hda_codec *codec, hda_nid_t pin_nid)
460 {
461 #ifdef CONFIG_SND_DEBUG_VERBOSE
462 int i;
463 int size;
464
465 size = snd_hdmi_get_eld_size(codec, pin_nid);
466 printk(KERN_DEBUG "HDMI: ELD buf size is %d\n", size);
467
468 for (i = 0; i < 8; i++) {
469 size = snd_hda_codec_read(codec, pin_nid, 0,
470 AC_VERB_GET_HDMI_DIP_SIZE, i);
471 printk(KERN_DEBUG "HDMI: DIP GP[%d] buf size is %d\n", i, size);
472 }
473 #endif
474 }
475
476 static void hdmi_clear_dip_buffers(struct hda_codec *codec, hda_nid_t pin_nid)
477 {
478 #ifdef BE_PARANOID
479 int i, j;
480 int size;
481 int pi, bi;
482 for (i = 0; i < 8; i++) {
483 size = snd_hda_codec_read(codec, pin_nid, 0,
484 AC_VERB_GET_HDMI_DIP_SIZE, i);
485 if (size == 0)
486 continue;
487
488 hdmi_set_dip_index(codec, pin_nid, i, 0x0);
489 for (j = 1; j < 1000; j++) {
490 hdmi_write_dip_byte(codec, pin_nid, 0x0);
491 hdmi_get_dip_index(codec, pin_nid, &pi, &bi);
492 if (pi != i)
493 snd_printd(KERN_INFO "dip index %d: %d != %d\n",
494 bi, pi, i);
495 if (bi == 0) /* byte index wrapped around */
496 break;
497 }
498 snd_printd(KERN_INFO
499 "HDMI: DIP GP[%d] buf reported size=%d, written=%d\n",
500 i, size, j);
501 }
502 #endif
503 }
504
505 static void hdmi_checksum_audio_infoframe(struct hdmi_audio_infoframe *ai)
506 {
507 u8 *bytes = (u8 *)ai;
508 u8 sum = 0;
509 int i;
510
511 ai->checksum = 0;
512
513 for (i = 0; i < sizeof(*ai); i++)
514 sum += bytes[i];
515
516 ai->checksum = - sum;
517 }
518
519 static void hdmi_fill_audio_infoframe(struct hda_codec *codec,
520 hda_nid_t pin_nid,
521 struct hdmi_audio_infoframe *ai)
522 {
523 u8 *bytes = (u8 *)ai;
524 int i;
525
526 hdmi_debug_dip_size(codec, pin_nid);
527 hdmi_clear_dip_buffers(codec, pin_nid); /* be paranoid */
528
529 hdmi_checksum_audio_infoframe(ai);
530
531 hdmi_set_dip_index(codec, pin_nid, 0x0, 0x0);
532 for (i = 0; i < sizeof(*ai); i++)
533 hdmi_write_dip_byte(codec, pin_nid, bytes[i]);
534 }
535
536 /*
537 * Compute derived values in channel_allocations[].
538 */
539 static void init_channel_allocations(void)
540 {
541 int i, j;
542 struct cea_channel_speaker_allocation *p;
543
544 for (i = 0; i < ARRAY_SIZE(channel_allocations); i++) {
545 p = channel_allocations + i;
546 p->channels = 0;
547 p->spk_mask = 0;
548 for (j = 0; j < ARRAY_SIZE(p->speakers); j++)
549 if (p->speakers[j]) {
550 p->channels++;
551 p->spk_mask |= p->speakers[j];
552 }
553 }
554 }
555
556 /*
557 * The transformation takes two steps:
558 *
559 * eld->spk_alloc => (eld_speaker_allocation_bits[]) => spk_mask
560 * spk_mask => (channel_allocations[]) => ai->CA
561 *
562 * TODO: it could select the wrong CA from multiple candidates.
563 */
564 static int hdmi_setup_channel_allocation(struct hda_codec *codec, hda_nid_t nid,
565 struct hdmi_audio_infoframe *ai)
566 {
567 struct intel_hdmi_spec *spec = codec->spec;
568 struct hdmi_eld *eld;
569 int i;
570 int spk_mask = 0;
571 int channels = 1 + (ai->CC02_CT47 & 0x7);
572 char buf[SND_PRINT_CHANNEL_ALLOCATION_ADVISED_BUFSIZE];
573
574 /*
575 * CA defaults to 0 for basic stereo audio
576 */
577 if (channels <= 2)
578 return 0;
579
580 i = hda_node_index(spec->pin_cvt, nid);
581 if (i < 0)
582 return 0;
583 eld = &spec->sink_eld[i];
584
585 /*
586 * HDMI sink's ELD info cannot always be retrieved for now, e.g.
587 * in console or for audio devices. Assume the highest speakers
588 * configuration, to _not_ prohibit multi-channel audio playback.
589 */
590 if (!eld->spk_alloc)
591 eld->spk_alloc = 0xffff;
592
593 /*
594 * expand ELD's speaker allocation mask
595 *
596 * ELD tells the speaker mask in a compact(paired) form,
597 * expand ELD's notions to match the ones used by Audio InfoFrame.
598 */
599 for (i = 0; i < ARRAY_SIZE(eld_speaker_allocation_bits); i++) {
600 if (eld->spk_alloc & (1 << i))
601 spk_mask |= eld_speaker_allocation_bits[i];
602 }
603
604 /* search for the first working match in the CA table */
605 for (i = 0; i < ARRAY_SIZE(channel_allocations); i++) {
606 if (channels == channel_allocations[i].channels &&
607 (spk_mask & channel_allocations[i].spk_mask) ==
608 channel_allocations[i].spk_mask) {
609 ai->CA = channel_allocations[i].ca_index;
610 break;
611 }
612 }
613
614 snd_print_channel_allocation(eld->spk_alloc, buf, sizeof(buf));
615 snd_printdd(KERN_INFO
616 "HDMI: select CA 0x%x for %d-channel allocation: %s\n",
617 ai->CA, channels, buf);
618
619 return ai->CA;
620 }
621
622 static void hdmi_setup_channel_mapping(struct hda_codec *codec, hda_nid_t nid,
623 struct hdmi_audio_infoframe *ai)
624 {
625 int i;
626
627 if (!ai->CA)
628 return;
629
630 /*
631 * TODO: adjust channel mapping if necessary
632 * ALSA sequence is front/surr/clfe/side?
633 */
634
635 for (i = 0; i < 8; i++)
636 snd_hda_codec_write(codec, nid, 0,
637 AC_VERB_SET_HDMI_CHAN_SLOT,
638 (i << 4) | i);
639
640 hdmi_debug_channel_mapping(codec, nid);
641 }
642
643 static bool hdmi_infoframe_uptodate(struct hda_codec *codec, hda_nid_t pin_nid,
644 struct hdmi_audio_infoframe *ai)
645 {
646 u8 *bytes = (u8 *)ai;
647 u8 val;
648 int i;
649
650 if (snd_hda_codec_read(codec, pin_nid, 0, AC_VERB_GET_HDMI_DIP_XMIT, 0)
651 != AC_DIPXMIT_BEST)
652 return false;
653
654 hdmi_set_dip_index(codec, pin_nid, 0x0, 0x0);
655 for (i = 0; i < sizeof(*ai); i++) {
656 val = snd_hda_codec_read(codec, pin_nid, 0,
657 AC_VERB_GET_HDMI_DIP_DATA, 0);
658 if (val != bytes[i])
659 return false;
660 }
661
662 return true;
663 }
664
665 static void hdmi_setup_audio_infoframe(struct hda_codec *codec, hda_nid_t nid,
666 struct snd_pcm_substream *substream)
667 {
668 struct intel_hdmi_spec *spec = codec->spec;
669 hda_nid_t pin_nid;
670 int i;
671 struct hdmi_audio_infoframe ai = {
672 .type = 0x84,
673 .ver = 0x01,
674 .len = 0x0a,
675 .CC02_CT47 = substream->runtime->channels - 1,
676 };
677
678 hdmi_setup_channel_allocation(codec, nid, &ai);
679 hdmi_setup_channel_mapping(codec, nid, &ai);
680
681 for (i = 0; i < spec->num_pins; i++) {
682 if (spec->pin_cvt[i] != nid)
683 continue;
684 if (!spec->sink_eld[i].monitor_present)
685 continue;
686
687 pin_nid = spec->pin[i];
688 if (!hdmi_infoframe_uptodate(codec, pin_nid, &ai)) {
689 hdmi_stop_infoframe_trans(codec, pin_nid);
690 hdmi_fill_audio_infoframe(codec, pin_nid, &ai);
691 hdmi_start_infoframe_trans(codec, pin_nid);
692 }
693 }
694 }
695
696
697 /*
698 * Unsolicited events
699 */
700
701 static void hdmi_intrinsic_event(struct hda_codec *codec, unsigned int res)
702 {
703 struct intel_hdmi_spec *spec = codec->spec;
704 int tag = res >> AC_UNSOL_RES_TAG_SHIFT;
705 int pind = !!(res & AC_UNSOL_RES_PD);
706 int eldv = !!(res & AC_UNSOL_RES_ELDV);
707 int index;
708
709 printk(KERN_INFO
710 "HDMI hot plug event: Pin=%d Presence_Detect=%d ELD_Valid=%d\n",
711 tag, pind, eldv);
712
713 index = hda_node_index(spec->pin, tag);
714 if (index < 0)
715 return;
716
717 spec->sink_eld[index].monitor_present = pind;
718 spec->sink_eld[index].eld_valid = eldv;
719
720 if (pind && eldv) {
721 hdmi_get_show_eld(codec, spec->pin[index], &spec->sink_eld[index]);
722 /* TODO: do real things about ELD */
723 }
724 }
725
726 static void hdmi_non_intrinsic_event(struct hda_codec *codec, unsigned int res)
727 {
728 int tag = res >> AC_UNSOL_RES_TAG_SHIFT;
729 int subtag = (res & AC_UNSOL_RES_SUBTAG) >> AC_UNSOL_RES_SUBTAG_SHIFT;
730 int cp_state = !!(res & AC_UNSOL_RES_CP_STATE);
731 int cp_ready = !!(res & AC_UNSOL_RES_CP_READY);
732
733 printk(KERN_INFO
734 "HDMI CP event: PIN=%d SUBTAG=0x%x CP_STATE=%d CP_READY=%d\n",
735 tag,
736 subtag,
737 cp_state,
738 cp_ready);
739
740 /* TODO */
741 if (cp_state)
742 ;
743 if (cp_ready)
744 ;
745 }
746
747
748 static void intel_hdmi_unsol_event(struct hda_codec *codec, unsigned int res)
749 {
750 struct intel_hdmi_spec *spec = codec->spec;
751 int tag = res >> AC_UNSOL_RES_TAG_SHIFT;
752 int subtag = (res & AC_UNSOL_RES_SUBTAG) >> AC_UNSOL_RES_SUBTAG_SHIFT;
753
754 if (hda_node_index(spec->pin, tag) < 0) {
755 snd_printd(KERN_INFO "Unexpected HDMI event tag 0x%x\n", tag);
756 return;
757 }
758
759 if (subtag == 0)
760 hdmi_intrinsic_event(codec, res);
761 else
762 hdmi_non_intrinsic_event(codec, res);
763 }
764
765 /*
766 * Callbacks
767 */
768
769 static void hdmi_setup_stream(struct hda_codec *codec, hda_nid_t nid,
770 u32 stream_tag, int format)
771 {
772 int tag;
773 int fmt;
774
775 tag = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_CONV, 0) >> 4;
776 fmt = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_STREAM_FORMAT, 0);
777
778 snd_printdd("hdmi_setup_stream: "
779 "NID=0x%x, %sstream=0x%x, %sformat=0x%x\n",
780 nid,
781 tag == stream_tag ? "" : "new-",
782 stream_tag,
783 fmt == format ? "" : "new-",
784 format);
785
786 if (tag != stream_tag)
787 snd_hda_codec_write(codec, nid, 0,
788 AC_VERB_SET_CHANNEL_STREAMID, stream_tag << 4);
789 if (fmt != format)
790 snd_hda_codec_write(codec, nid, 0,
791 AC_VERB_SET_STREAM_FORMAT, format);
792 }
793
794 static int intel_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
795 struct hda_codec *codec,
796 unsigned int stream_tag,
797 unsigned int format,
798 struct snd_pcm_substream *substream)
799 {
800 hdmi_set_channel_count(codec, hinfo->nid,
801 substream->runtime->channels);
802
803 hdmi_setup_audio_infoframe(codec, hinfo->nid, substream);
804
805 hdmi_setup_stream(codec, hinfo->nid, stream_tag, format);
806 return 0;
807 }
808
809 static int intel_hdmi_playback_pcm_cleanup(struct hda_pcm_stream *hinfo,
810 struct hda_codec *codec,
811 struct snd_pcm_substream *substream)
812 {
813 return 0;
814 }
815
816 static struct hda_pcm_stream intel_hdmi_pcm_playback = {
817 .substreams = 1,
818 .channels_min = 2,
819 .ops = {
820 .prepare = intel_hdmi_playback_pcm_prepare,
821 .cleanup = intel_hdmi_playback_pcm_cleanup,
822 },
823 };
824
825 static int intel_hdmi_build_pcms(struct hda_codec *codec)
826 {
827 struct intel_hdmi_spec *spec = codec->spec;
828 struct hda_pcm *info = spec->pcm_rec;
829 int i;
830
831 codec->num_pcms = spec->num_cvts;
832 codec->pcm_info = info;
833
834 for (i = 0; i < codec->num_pcms; i++, info++) {
835 unsigned int chans;
836
837 chans = get_wcaps(codec, spec->cvt[i]);
838 chans = get_wcaps_channels(chans);
839
840 info->name = intel_hdmi_pcm_names[i];
841 info->pcm_type = HDA_PCM_TYPE_HDMI;
842 info->stream[SNDRV_PCM_STREAM_PLAYBACK] =
843 intel_hdmi_pcm_playback;
844 info->stream[SNDRV_PCM_STREAM_PLAYBACK].nid = spec->cvt[i];
845 info->stream[SNDRV_PCM_STREAM_PLAYBACK].channels_max = chans;
846 }
847
848 return 0;
849 }
850
851 static int intel_hdmi_build_controls(struct hda_codec *codec)
852 {
853 struct intel_hdmi_spec *spec = codec->spec;
854 int err;
855 int i;
856
857 for (i = 0; i < codec->num_pcms; i++) {
858 err = snd_hda_create_spdif_out_ctls(codec, spec->cvt[i]);
859 if (err < 0)
860 return err;
861 }
862
863 return 0;
864 }
865
866 static int intel_hdmi_init(struct hda_codec *codec)
867 {
868 struct intel_hdmi_spec *spec = codec->spec;
869 int i;
870
871 for (i = 0; spec->pin[i]; i++) {
872 hdmi_enable_output(codec, spec->pin[i]);
873 snd_hda_codec_write(codec, spec->pin[i], 0,
874 AC_VERB_SET_UNSOLICITED_ENABLE,
875 AC_USRSP_EN | spec->pin[i]);
876 }
877 return 0;
878 }
879
880 static void intel_hdmi_free(struct hda_codec *codec)
881 {
882 struct intel_hdmi_spec *spec = codec->spec;
883 int i;
884
885 for (i = 0; i < spec->num_pins; i++)
886 snd_hda_eld_proc_free(codec, &spec->sink_eld[i]);
887
888 kfree(spec);
889 }
890
891 static struct hda_codec_ops intel_hdmi_patch_ops = {
892 .init = intel_hdmi_init,
893 .free = intel_hdmi_free,
894 .build_pcms = intel_hdmi_build_pcms,
895 .build_controls = intel_hdmi_build_controls,
896 .unsol_event = intel_hdmi_unsol_event,
897 };
898
899 static int patch_intel_hdmi(struct hda_codec *codec)
900 {
901 struct intel_hdmi_spec *spec;
902 int i;
903
904 spec = kzalloc(sizeof(*spec), GFP_KERNEL);
905 if (spec == NULL)
906 return -ENOMEM;
907
908 codec->spec = spec;
909 if (intel_hdmi_parse_codec(codec) < 0) {
910 codec->spec = NULL;
911 kfree(spec);
912 return -EINVAL;
913 }
914 codec->patch_ops = intel_hdmi_patch_ops;
915
916 for (i = 0; i < spec->num_pins; i++)
917 snd_hda_eld_proc_new(codec, &spec->sink_eld[i], i);
918
919 init_channel_allocations();
920
921 return 0;
922 }
923
924 static struct hda_codec_preset snd_hda_preset_intelhdmi[] = {
925 { .id = 0x808629fb, .name = "G45 DEVCL", .patch = patch_intel_hdmi },
926 { .id = 0x80862801, .name = "G45 DEVBLC", .patch = patch_intel_hdmi },
927 { .id = 0x80862802, .name = "G45 DEVCTG", .patch = patch_intel_hdmi },
928 { .id = 0x80862803, .name = "G45 DEVELK", .patch = patch_intel_hdmi },
929 { .id = 0x80862804, .name = "G45 DEVIBX", .patch = patch_intel_hdmi },
930 { .id = 0x80860054, .name = "Q57 DEVIBX", .patch = patch_intel_hdmi },
931 { .id = 0x10951392, .name = "SiI1392 HDMI", .patch = patch_intel_hdmi },
932 {} /* terminator */
933 };
934
935 MODULE_ALIAS("snd-hda-codec-id:808629fb");
936 MODULE_ALIAS("snd-hda-codec-id:80862801");
937 MODULE_ALIAS("snd-hda-codec-id:80862802");
938 MODULE_ALIAS("snd-hda-codec-id:80862803");
939 MODULE_ALIAS("snd-hda-codec-id:80862804");
940 MODULE_ALIAS("snd-hda-codec-id:80860054");
941 MODULE_ALIAS("snd-hda-codec-id:10951392");
942
943 MODULE_LICENSE("GPL");
944 MODULE_DESCRIPTION("Intel HDMI HD-audio codec");
945
946 static struct hda_codec_preset_list intel_list = {
947 .preset = snd_hda_preset_intelhdmi,
948 .owner = THIS_MODULE,
949 };
950
951 static int __init patch_intelhdmi_init(void)
952 {
953 return snd_hda_add_codec_preset(&intel_list);
954 }
955
956 static void __exit patch_intelhdmi_exit(void)
957 {
958 snd_hda_delete_codec_preset(&intel_list);
959 }
960
961 module_init(patch_intelhdmi_init)
962 module_exit(patch_intelhdmi_exit)
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