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ALSA: hdmi - merge common code for intelhdmi and nvhdmi
[firewire-audio.git] / sound / pci / hda / patch_hdmi.c
blobb2ab39670dda380e4eb3ac3f262dbb0afe3b1404
1 /*
2 *
3 * patch_hdmi.c - routines for HDMI/DisplayPort codecs
4 *
5 * Copyright(c) 2008-2010 Intel Corporation. All rights reserved.
6 *
7 * Authors:
8 * Wu Fengguang <wfg@linux.intel.com>
9 *
10 * Maintained by:
11 * Wu Fengguang <wfg@linux.intel.com>
12 *
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the Free
15 * Software Foundation; either version 2 of the License, or (at your option)
16 * any later version.
17 *
18 * This program is distributed in the hope that it will be useful, but
19 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
20 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
21 * for more details.
22 *
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software Foundation,
25 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
26 */
27
28
29 struct hdmi_spec {
30 int num_cvts;
31 int num_pins;
32 hda_nid_t cvt[MAX_HDMI_CVTS+1]; /* audio sources */
33 hda_nid_t pin[MAX_HDMI_PINS+1]; /* audio sinks */
34
35 /*
36 * source connection for each pin
37 */
38 hda_nid_t pin_cvt[MAX_HDMI_PINS+1];
39
40 /*
41 * HDMI sink attached to each pin
42 */
43 struct hdmi_eld sink_eld[MAX_HDMI_PINS];
44
45 /*
46 * export one pcm per pipe
47 */
48 struct hda_pcm pcm_rec[MAX_HDMI_CVTS];
49
50 /*
51 * nvhdmi specific
52 */
53 struct hda_multi_out multiout;
54 unsigned int codec_type;
55 };
56
57
58 struct hdmi_audio_infoframe {
59 u8 type; /* 0x84 */
60 u8 ver; /* 0x01 */
61 u8 len; /* 0x0a */
62
63 u8 checksum; /* PB0 */
64 u8 CC02_CT47; /* CC in bits 0:2, CT in 4:7 */
65 u8 SS01_SF24;
66 u8 CXT04;
67 u8 CA;
68 u8 LFEPBL01_LSV36_DM_INH7;
69 u8 reserved[5]; /* PB6 - PB10 */
70 };
71
72 /*
73 * CEA speaker placement:
74 *
75 * FLH FCH FRH
76 * FLW FL FLC FC FRC FR FRW
77 *
78 * LFE
79 * TC
80 *
81 * RL RLC RC RRC RR
82 *
83 * The Left/Right Surround channel _notions_ LS/RS in SMPTE 320M corresponds to
84 * CEA RL/RR; The SMPTE channel _assignment_ C/LFE is swapped to CEA LFE/FC.
85 */
86 enum cea_speaker_placement {
87 FL = (1 << 0), /* Front Left */
88 FC = (1 << 1), /* Front Center */
89 FR = (1 << 2), /* Front Right */
90 FLC = (1 << 3), /* Front Left Center */
91 FRC = (1 << 4), /* Front Right Center */
92 RL = (1 << 5), /* Rear Left */
93 RC = (1 << 6), /* Rear Center */
94 RR = (1 << 7), /* Rear Right */
95 RLC = (1 << 8), /* Rear Left Center */
96 RRC = (1 << 9), /* Rear Right Center */
97 LFE = (1 << 10), /* Low Frequency Effect */
98 FLW = (1 << 11), /* Front Left Wide */
99 FRW = (1 << 12), /* Front Right Wide */
100 FLH = (1 << 13), /* Front Left High */
101 FCH = (1 << 14), /* Front Center High */
102 FRH = (1 << 15), /* Front Right High */
103 TC = (1 << 16), /* Top Center */
104 };
105
106 /*
107 * ELD SA bits in the CEA Speaker Allocation data block
108 */
109 static int eld_speaker_allocation_bits[] = {
110 [0] = FL | FR,
111 [1] = LFE,
112 [2] = FC,
113 [3] = RL | RR,
114 [4] = RC,
115 [5] = FLC | FRC,
116 [6] = RLC | RRC,
117 /* the following are not defined in ELD yet */
118 [7] = FLW | FRW,
119 [8] = FLH | FRH,
120 [9] = TC,
121 [10] = FCH,
122 };
123
124 struct cea_channel_speaker_allocation {
125 int ca_index;
126 int speakers[8];
127
128 /* derived values, just for convenience */
129 int channels;
130 int spk_mask;
131 };
132
133 /*
134 * ALSA sequence is:
135 *
136 * surround40 surround41 surround50 surround51 surround71
137 * ch0 front left = = = =
138 * ch1 front right = = = =
139 * ch2 rear left = = = =
140 * ch3 rear right = = = =
141 * ch4 LFE center center center
142 * ch5 LFE LFE
143 * ch6 side left
144 * ch7 side right
145 *
146 * surround71 = {FL, FR, RLC, RRC, FC, LFE, RL, RR}
147 */
148 static int hdmi_channel_mapping[0x32][8] = {
149 /* stereo */
150 [0x00] = { 0x00, 0x11, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7 },
151 /* 2.1 */
152 [0x01] = { 0x00, 0x11, 0x22, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7 },
153 /* Dolby Surround */
154 [0x02] = { 0x00, 0x11, 0x23, 0xf2, 0xf4, 0xf5, 0xf6, 0xf7 },
155 /* surround40 */
156 [0x08] = { 0x00, 0x11, 0x24, 0x35, 0xf3, 0xf2, 0xf6, 0xf7 },
157 /* 4ch */
158 [0x03] = { 0x00, 0x11, 0x23, 0x32, 0x44, 0xf5, 0xf6, 0xf7 },
159 /* surround41 */
160 [0x09] = { 0x00, 0x11, 0x24, 0x34, 0x43, 0xf2, 0xf6, 0xf7 },
161 /* surround50 */
162 [0x0a] = { 0x00, 0x11, 0x24, 0x35, 0x43, 0xf2, 0xf6, 0xf7 },
163 /* surround51 */
164 [0x0b] = { 0x00, 0x11, 0x24, 0x35, 0x43, 0x52, 0xf6, 0xf7 },
165 /* 7.1 */
166 [0x13] = { 0x00, 0x11, 0x26, 0x37, 0x43, 0x52, 0x64, 0x75 },
167 };
168
169 /*
170 * This is an ordered list!
171 *
172 * The preceding ones have better chances to be selected by
173 * hdmi_setup_channel_allocation().
174 */
175 static struct cea_channel_speaker_allocation channel_allocations[] = {
176 /* channel: 7 6 5 4 3 2 1 0 */
177 { .ca_index = 0x00, .speakers = { 0, 0, 0, 0, 0, 0, FR, FL } },
178 /* 2.1 */
179 { .ca_index = 0x01, .speakers = { 0, 0, 0, 0, 0, LFE, FR, FL } },
180 /* Dolby Surround */
181 { .ca_index = 0x02, .speakers = { 0, 0, 0, 0, FC, 0, FR, FL } },
182 /* surround40 */
183 { .ca_index = 0x08, .speakers = { 0, 0, RR, RL, 0, 0, FR, FL } },
184 /* surround41 */
185 { .ca_index = 0x09, .speakers = { 0, 0, RR, RL, 0, LFE, FR, FL } },
186 /* surround50 */
187 { .ca_index = 0x0a, .speakers = { 0, 0, RR, RL, FC, 0, FR, FL } },
188 /* surround51 */
189 { .ca_index = 0x0b, .speakers = { 0, 0, RR, RL, FC, LFE, FR, FL } },
190 /* 6.1 */
191 { .ca_index = 0x0f, .speakers = { 0, RC, RR, RL, FC, LFE, FR, FL } },
192 /* surround71 */
193 { .ca_index = 0x13, .speakers = { RRC, RLC, RR, RL, FC, LFE, FR, FL } },
194
195 { .ca_index = 0x03, .speakers = { 0, 0, 0, 0, FC, LFE, FR, FL } },
196 { .ca_index = 0x04, .speakers = { 0, 0, 0, RC, 0, 0, FR, FL } },
197 { .ca_index = 0x05, .speakers = { 0, 0, 0, RC, 0, LFE, FR, FL } },
198 { .ca_index = 0x06, .speakers = { 0, 0, 0, RC, FC, 0, FR, FL } },
199 { .ca_index = 0x07, .speakers = { 0, 0, 0, RC, FC, LFE, FR, FL } },
200 { .ca_index = 0x0c, .speakers = { 0, RC, RR, RL, 0, 0, FR, FL } },
201 { .ca_index = 0x0d, .speakers = { 0, RC, RR, RL, 0, LFE, FR, FL } },
202 { .ca_index = 0x0e, .speakers = { 0, RC, RR, RL, FC, 0, FR, FL } },
203 { .ca_index = 0x10, .speakers = { RRC, RLC, RR, RL, 0, 0, FR, FL } },
204 { .ca_index = 0x11, .speakers = { RRC, RLC, RR, RL, 0, LFE, FR, FL } },
205 { .ca_index = 0x12, .speakers = { RRC, RLC, RR, RL, FC, 0, FR, FL } },
206 { .ca_index = 0x14, .speakers = { FRC, FLC, 0, 0, 0, 0, FR, FL } },
207 { .ca_index = 0x15, .speakers = { FRC, FLC, 0, 0, 0, LFE, FR, FL } },
208 { .ca_index = 0x16, .speakers = { FRC, FLC, 0, 0, FC, 0, FR, FL } },
209 { .ca_index = 0x17, .speakers = { FRC, FLC, 0, 0, FC, LFE, FR, FL } },
210 { .ca_index = 0x18, .speakers = { FRC, FLC, 0, RC, 0, 0, FR, FL } },
211 { .ca_index = 0x19, .speakers = { FRC, FLC, 0, RC, 0, LFE, FR, FL } },
212 { .ca_index = 0x1a, .speakers = { FRC, FLC, 0, RC, FC, 0, FR, FL } },
213 { .ca_index = 0x1b, .speakers = { FRC, FLC, 0, RC, FC, LFE, FR, FL } },
214 { .ca_index = 0x1c, .speakers = { FRC, FLC, RR, RL, 0, 0, FR, FL } },
215 { .ca_index = 0x1d, .speakers = { FRC, FLC, RR, RL, 0, LFE, FR, FL } },
216 { .ca_index = 0x1e, .speakers = { FRC, FLC, RR, RL, FC, 0, FR, FL } },
217 { .ca_index = 0x1f, .speakers = { FRC, FLC, RR, RL, FC, LFE, FR, FL } },
218 { .ca_index = 0x20, .speakers = { 0, FCH, RR, RL, FC, 0, FR, FL } },
219 { .ca_index = 0x21, .speakers = { 0, FCH, RR, RL, FC, LFE, FR, FL } },
220 { .ca_index = 0x22, .speakers = { TC, 0, RR, RL, FC, 0, FR, FL } },
221 { .ca_index = 0x23, .speakers = { TC, 0, RR, RL, FC, LFE, FR, FL } },
222 { .ca_index = 0x24, .speakers = { FRH, FLH, RR, RL, 0, 0, FR, FL } },
223 { .ca_index = 0x25, .speakers = { FRH, FLH, RR, RL, 0, LFE, FR, FL } },
224 { .ca_index = 0x26, .speakers = { FRW, FLW, RR, RL, 0, 0, FR, FL } },
225 { .ca_index = 0x27, .speakers = { FRW, FLW, RR, RL, 0, LFE, FR, FL } },
226 { .ca_index = 0x28, .speakers = { TC, RC, RR, RL, FC, 0, FR, FL } },
227 { .ca_index = 0x29, .speakers = { TC, RC, RR, RL, FC, LFE, FR, FL } },
228 { .ca_index = 0x2a, .speakers = { FCH, RC, RR, RL, FC, 0, FR, FL } },
229 { .ca_index = 0x2b, .speakers = { FCH, RC, RR, RL, FC, LFE, FR, FL } },
230 { .ca_index = 0x2c, .speakers = { TC, FCH, RR, RL, FC, 0, FR, FL } },
231 { .ca_index = 0x2d, .speakers = { TC, FCH, RR, RL, FC, LFE, FR, FL } },
232 { .ca_index = 0x2e, .speakers = { FRH, FLH, RR, RL, FC, 0, FR, FL } },
233 { .ca_index = 0x2f, .speakers = { FRH, FLH, RR, RL, FC, LFE, FR, FL } },
234 { .ca_index = 0x30, .speakers = { FRW, FLW, RR, RL, FC, 0, FR, FL } },
235 { .ca_index = 0x31, .speakers = { FRW, FLW, RR, RL, FC, LFE, FR, FL } },
236 };
237
238
239 /*
240 * HDMI routines
241 */
242
243 static int hda_node_index(hda_nid_t *nids, hda_nid_t nid)
244 {
245 int i;
246
247 for (i = 0; nids[i]; i++)
248 if (nids[i] == nid)
249 return i;
250
251 snd_printk(KERN_WARNING "HDMI: nid %d not registered\n", nid);
252 return -EINVAL;
253 }
254
255 static void hdmi_get_show_eld(struct hda_codec *codec, hda_nid_t pin_nid,
256 struct hdmi_eld *eld)
257 {
258 if (!snd_hdmi_get_eld(eld, codec, pin_nid))
259 snd_hdmi_show_eld(eld);
260 }
261
262 #ifdef BE_PARANOID
263 static void hdmi_get_dip_index(struct hda_codec *codec, hda_nid_t pin_nid,
264 int *packet_index, int *byte_index)
265 {
266 int val;
267
268 val = snd_hda_codec_read(codec, pin_nid, 0,
269 AC_VERB_GET_HDMI_DIP_INDEX, 0);
270
271 *packet_index = val >> 5;
272 *byte_index = val & 0x1f;
273 }
274 #endif
275
276 static void hdmi_set_dip_index(struct hda_codec *codec, hda_nid_t pin_nid,
277 int packet_index, int byte_index)
278 {
279 int val;
280
281 val = (packet_index << 5) | (byte_index & 0x1f);
282
283 snd_hda_codec_write(codec, pin_nid, 0, AC_VERB_SET_HDMI_DIP_INDEX, val);
284 }
285
286 static void hdmi_write_dip_byte(struct hda_codec *codec, hda_nid_t pin_nid,
287 unsigned char val)
288 {
289 snd_hda_codec_write(codec, pin_nid, 0, AC_VERB_SET_HDMI_DIP_DATA, val);
290 }
291
292 static void hdmi_enable_output(struct hda_codec *codec, hda_nid_t pin_nid)
293 {
294 /* Unmute */
295 if (get_wcaps(codec, pin_nid) & AC_WCAP_OUT_AMP)
296 snd_hda_codec_write(codec, pin_nid, 0,
297 AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE);
298 /* Enable pin out */
299 snd_hda_codec_write(codec, pin_nid, 0,
300 AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT);
301 }
302
303 static int hdmi_get_channel_count(struct hda_codec *codec, hda_nid_t nid)
304 {
305 return 1 + snd_hda_codec_read(codec, nid, 0,
306 AC_VERB_GET_CVT_CHAN_COUNT, 0);
307 }
308
309 static void hdmi_set_channel_count(struct hda_codec *codec,
310 hda_nid_t nid, int chs)
311 {
312 if (chs != hdmi_get_channel_count(codec, nid))
313 snd_hda_codec_write(codec, nid, 0,
314 AC_VERB_SET_CVT_CHAN_COUNT, chs - 1);
315 }
316
317
318 /*
319 * Channel mapping routines
320 */
321
322 /*
323 * Compute derived values in channel_allocations[].
324 */
325 static void init_channel_allocations(void)
326 {
327 int i, j;
328 struct cea_channel_speaker_allocation *p;
329
330 for (i = 0; i < ARRAY_SIZE(channel_allocations); i++) {
331 p = channel_allocations + i;
332 p->channels = 0;
333 p->spk_mask = 0;
334 for (j = 0; j < ARRAY_SIZE(p->speakers); j++)
335 if (p->speakers[j]) {
336 p->channels++;
337 p->spk_mask |= p->speakers[j];
338 }
339 }
340 }
341
342 /*
343 * The transformation takes two steps:
344 *
345 * eld->spk_alloc => (eld_speaker_allocation_bits[]) => spk_mask
346 * spk_mask => (channel_allocations[]) => ai->CA
347 *
348 * TODO: it could select the wrong CA from multiple candidates.
349 */
350 static int hdmi_setup_channel_allocation(struct hda_codec *codec, hda_nid_t nid,
351 struct hdmi_audio_infoframe *ai)
352 {
353 struct hdmi_spec *spec = codec->spec;
354 struct hdmi_eld *eld;
355 int i;
356 int spk_mask = 0;
357 int channels = 1 + (ai->CC02_CT47 & 0x7);
358 char buf[SND_PRINT_CHANNEL_ALLOCATION_ADVISED_BUFSIZE];
359
360 /*
361 * CA defaults to 0 for basic stereo audio
362 */
363 if (channels <= 2)
364 return 0;
365
366 i = hda_node_index(spec->pin_cvt, nid);
367 if (i < 0)
368 return 0;
369 eld = &spec->sink_eld[i];
370
371 /*
372 * HDMI sink's ELD info cannot always be retrieved for now, e.g.
373 * in console or for audio devices. Assume the highest speakers
374 * configuration, to _not_ prohibit multi-channel audio playback.
375 */
376 if (!eld->spk_alloc)
377 eld->spk_alloc = 0xffff;
378
379 /*
380 * expand ELD's speaker allocation mask
381 *
382 * ELD tells the speaker mask in a compact(paired) form,
383 * expand ELD's notions to match the ones used by Audio InfoFrame.
384 */
385 for (i = 0; i < ARRAY_SIZE(eld_speaker_allocation_bits); i++) {
386 if (eld->spk_alloc & (1 << i))
387 spk_mask |= eld_speaker_allocation_bits[i];
388 }
389
390 /* search for the first working match in the CA table */
391 for (i = 0; i < ARRAY_SIZE(channel_allocations); i++) {
392 if (channels == channel_allocations[i].channels &&
393 (spk_mask & channel_allocations[i].spk_mask) ==
394 channel_allocations[i].spk_mask) {
395 ai->CA = channel_allocations[i].ca_index;
396 break;
397 }
398 }
399
400 snd_print_channel_allocation(eld->spk_alloc, buf, sizeof(buf));
401 snd_printdd(KERN_INFO
402 "HDMI: select CA 0x%x for %d-channel allocation: %s\n",
403 ai->CA, channels, buf);
404
405 return ai->CA;
406 }
407
408 static void hdmi_debug_channel_mapping(struct hda_codec *codec,
409 hda_nid_t pin_nid)
410 {
411 #ifdef CONFIG_SND_DEBUG_VERBOSE
412 int i;
413 int slot;
414
415 for (i = 0; i < 8; i++) {
416 slot = snd_hda_codec_read(codec, pin_nid, 0,
417 AC_VERB_GET_HDMI_CHAN_SLOT, i);
418 printk(KERN_DEBUG "HDMI: ASP channel %d => slot %d\n",
419 slot >> 4, slot & 0xf);
420 }
421 #endif
422 }
423
424
425 static void hdmi_setup_channel_mapping(struct hda_codec *codec,
426 hda_nid_t pin_nid,
427 struct hdmi_audio_infoframe *ai)
428 {
429 int i;
430 int ca = ai->CA;
431 int err;
432
433 if (hdmi_channel_mapping[ca][1] == 0) {
434 for (i = 0; i < channel_allocations[ca].channels; i++)
435 hdmi_channel_mapping[ca][i] = i | (i << 4);
436 for (; i < 8; i++)
437 hdmi_channel_mapping[ca][i] = 0xf | (i << 4);
438 }
439
440 for (i = 0; i < 8; i++) {
441 err = snd_hda_codec_write(codec, pin_nid, 0,
442 AC_VERB_SET_HDMI_CHAN_SLOT,
443 hdmi_channel_mapping[ca][i]);
444 if (err) {
445 snd_printdd(KERN_INFO "HDMI: channel mapping failed\n");
446 break;
447 }
448 }
449
450 hdmi_debug_channel_mapping(codec, pin_nid);
451 }
452
453
454 /*
455 * Audio InfoFrame routines
456 */
457
458 /*
459 * Enable Audio InfoFrame Transmission
460 */
461 static void hdmi_start_infoframe_trans(struct hda_codec *codec,
462 hda_nid_t pin_nid)
463 {
464 hdmi_set_dip_index(codec, pin_nid, 0x0, 0x0);
465 snd_hda_codec_write(codec, pin_nid, 0, AC_VERB_SET_HDMI_DIP_XMIT,
466 AC_DIPXMIT_BEST);
467 }
468
469 /*
470 * Disable Audio InfoFrame Transmission
471 */
472 static void hdmi_stop_infoframe_trans(struct hda_codec *codec,
473 hda_nid_t pin_nid)
474 {
475 hdmi_set_dip_index(codec, pin_nid, 0x0, 0x0);
476 snd_hda_codec_write(codec, pin_nid, 0, AC_VERB_SET_HDMI_DIP_XMIT,
477 AC_DIPXMIT_DISABLE);
478 }
479
480 static void hdmi_debug_dip_size(struct hda_codec *codec, hda_nid_t pin_nid)
481 {
482 #ifdef CONFIG_SND_DEBUG_VERBOSE
483 int i;
484 int size;
485
486 size = snd_hdmi_get_eld_size(codec, pin_nid);
487 printk(KERN_DEBUG "HDMI: ELD buf size is %d\n", size);
488
489 for (i = 0; i < 8; i++) {
490 size = snd_hda_codec_read(codec, pin_nid, 0,
491 AC_VERB_GET_HDMI_DIP_SIZE, i);
492 printk(KERN_DEBUG "HDMI: DIP GP[%d] buf size is %d\n", i, size);
493 }
494 #endif
495 }
496
497 static void hdmi_clear_dip_buffers(struct hda_codec *codec, hda_nid_t pin_nid)
498 {
499 #ifdef BE_PARANOID
500 int i, j;
501 int size;
502 int pi, bi;
503 for (i = 0; i < 8; i++) {
504 size = snd_hda_codec_read(codec, pin_nid, 0,
505 AC_VERB_GET_HDMI_DIP_SIZE, i);
506 if (size == 0)
507 continue;
508
509 hdmi_set_dip_index(codec, pin_nid, i, 0x0);
510 for (j = 1; j < 1000; j++) {
511 hdmi_write_dip_byte(codec, pin_nid, 0x0);
512 hdmi_get_dip_index(codec, pin_nid, &pi, &bi);
513 if (pi != i)
514 snd_printd(KERN_INFO "dip index %d: %d != %d\n",
515 bi, pi, i);
516 if (bi == 0) /* byte index wrapped around */
517 break;
518 }
519 snd_printd(KERN_INFO
520 "HDMI: DIP GP[%d] buf reported size=%d, written=%d\n",
521 i, size, j);
522 }
523 #endif
524 }
525
526 static void hdmi_checksum_audio_infoframe(struct hdmi_audio_infoframe *ai)
527 {
528 u8 *bytes = (u8 *)ai;
529 u8 sum = 0;
530 int i;
531
532 ai->checksum = 0;
533
534 for (i = 0; i < sizeof(*ai); i++)
535 sum += bytes[i];
536
537 ai->checksum = -sum;
538 }
539
540 static void hdmi_fill_audio_infoframe(struct hda_codec *codec,
541 hda_nid_t pin_nid,
542 struct hdmi_audio_infoframe *ai)
543 {
544 u8 *bytes = (u8 *)ai;
545 int i;
546
547 hdmi_debug_dip_size(codec, pin_nid);
548 hdmi_clear_dip_buffers(codec, pin_nid); /* be paranoid */
549
550 hdmi_checksum_audio_infoframe(ai);
551
552 hdmi_set_dip_index(codec, pin_nid, 0x0, 0x0);
553 for (i = 0; i < sizeof(*ai); i++)
554 hdmi_write_dip_byte(codec, pin_nid, bytes[i]);
555 }
556
557 static bool hdmi_infoframe_uptodate(struct hda_codec *codec, hda_nid_t pin_nid,
558 struct hdmi_audio_infoframe *ai)
559 {
560 u8 *bytes = (u8 *)ai;
561 u8 val;
562 int i;
563
564 if (snd_hda_codec_read(codec, pin_nid, 0, AC_VERB_GET_HDMI_DIP_XMIT, 0)
565 != AC_DIPXMIT_BEST)
566 return false;
567
568 hdmi_set_dip_index(codec, pin_nid, 0x0, 0x0);
569 for (i = 0; i < sizeof(*ai); i++) {
570 val = snd_hda_codec_read(codec, pin_nid, 0,
571 AC_VERB_GET_HDMI_DIP_DATA, 0);
572 if (val != bytes[i])
573 return false;
574 }
575
576 return true;
577 }
578
579 static void hdmi_setup_audio_infoframe(struct hda_codec *codec, hda_nid_t nid,
580 struct snd_pcm_substream *substream)
581 {
582 struct hdmi_spec *spec = codec->spec;
583 hda_nid_t pin_nid;
584 int i;
585 struct hdmi_audio_infoframe ai = {
586 .type = 0x84,
587 .ver = 0x01,
588 .len = 0x0a,
589 .CC02_CT47 = substream->runtime->channels - 1,
590 };
591
592 hdmi_setup_channel_allocation(codec, nid, &ai);
593
594 for (i = 0; i < spec->num_pins; i++) {
595 if (spec->pin_cvt[i] != nid)
596 continue;
597 if (!spec->sink_eld[i].monitor_present)
598 continue;
599
600 pin_nid = spec->pin[i];
601 if (!hdmi_infoframe_uptodate(codec, pin_nid, &ai)) {
602 hdmi_setup_channel_mapping(codec, pin_nid, &ai);
603 hdmi_stop_infoframe_trans(codec, pin_nid);
604 hdmi_fill_audio_infoframe(codec, pin_nid, &ai);
605 hdmi_start_infoframe_trans(codec, pin_nid);
606 }
607 }
608 }
609
610
611 /*
612 * Unsolicited events
613 */
614
615 static void hdmi_intrinsic_event(struct hda_codec *codec, unsigned int res)
616 {
617 struct hdmi_spec *spec = codec->spec;
618 int tag = res >> AC_UNSOL_RES_TAG_SHIFT;
619 int pind = !!(res & AC_UNSOL_RES_PD);
620 int eldv = !!(res & AC_UNSOL_RES_ELDV);
621 int index;
622
623 printk(KERN_INFO
624 "HDMI hot plug event: Pin=%d Presence_Detect=%d ELD_Valid=%d\n",
625 tag, pind, eldv);
626
627 index = hda_node_index(spec->pin, tag);
628 if (index < 0)
629 return;
630
631 spec->sink_eld[index].monitor_present = pind;
632 spec->sink_eld[index].eld_valid = eldv;
633
634 if (pind && eldv) {
635 hdmi_get_show_eld(codec, spec->pin[index],
636 &spec->sink_eld[index]);
637 /* TODO: do real things about ELD */
638 }
639 }
640
641 static void hdmi_non_intrinsic_event(struct hda_codec *codec, unsigned int res)
642 {
643 int tag = res >> AC_UNSOL_RES_TAG_SHIFT;
644 int subtag = (res & AC_UNSOL_RES_SUBTAG) >> AC_UNSOL_RES_SUBTAG_SHIFT;
645 int cp_state = !!(res & AC_UNSOL_RES_CP_STATE);
646 int cp_ready = !!(res & AC_UNSOL_RES_CP_READY);
647
648 printk(KERN_INFO
649 "HDMI CP event: PIN=%d SUBTAG=0x%x CP_STATE=%d CP_READY=%d\n",
650 tag,
651 subtag,
652 cp_state,
653 cp_ready);
654
655 /* TODO */
656 if (cp_state)
657 ;
658 if (cp_ready)
659 ;
660 }
661
662
663 static void hdmi_unsol_event(struct hda_codec *codec, unsigned int res)
664 {
665 struct hdmi_spec *spec = codec->spec;
666 int tag = res >> AC_UNSOL_RES_TAG_SHIFT;
667 int subtag = (res & AC_UNSOL_RES_SUBTAG) >> AC_UNSOL_RES_SUBTAG_SHIFT;
668
669 if (hda_node_index(spec->pin, tag) < 0) {
670 snd_printd(KERN_INFO "Unexpected HDMI event tag 0x%x\n", tag);
671 return;
672 }
673
674 if (subtag == 0)
675 hdmi_intrinsic_event(codec, res);
676 else
677 hdmi_non_intrinsic_event(codec, res);
678 }
679
680 /*
681 * Callbacks
682 */
683
684 static void hdmi_setup_stream(struct hda_codec *codec, hda_nid_t nid,
685 u32 stream_tag, int format)
686 {
687 int tag;
688 int fmt;
689
690 tag = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_CONV, 0) >> 4;
691 fmt = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_STREAM_FORMAT, 0);
692
693 snd_printdd("hdmi_setup_stream: "
694 "NID=0x%x, %sstream=0x%x, %sformat=0x%x\n",
695 nid,
696 tag == stream_tag ? "" : "new-",
697 stream_tag,
698 fmt == format ? "" : "new-",
699 format);
700
701 if (tag != stream_tag)
702 snd_hda_codec_write(codec, nid, 0,
703 AC_VERB_SET_CHANNEL_STREAMID,
704 stream_tag << 4);
705 if (fmt != format)
706 snd_hda_codec_write(codec, nid, 0,
707 AC_VERB_SET_STREAM_FORMAT, format);
708 }
709
710 /*
711 * HDA/HDMI auto parsing
712 */
713
714 static int hdmi_read_pin_conn(struct hda_codec *codec, hda_nid_t pin_nid)
715 {
716 struct hdmi_spec *spec = codec->spec;
717 hda_nid_t conn_list[HDA_MAX_CONNECTIONS];
718 int conn_len, curr;
719 int index;
720
721 if (!(get_wcaps(codec, pin_nid) & AC_WCAP_CONN_LIST)) {
722 snd_printk(KERN_WARNING
723 "HDMI: pin %d wcaps %#x "
724 "does not support connection list\n",
725 pin_nid, get_wcaps(codec, pin_nid));
726 return -EINVAL;
727 }
728
729 conn_len = snd_hda_get_connections(codec, pin_nid, conn_list,
730 HDA_MAX_CONNECTIONS);
731 if (conn_len > 1)
732 curr = snd_hda_codec_read(codec, pin_nid, 0,
733 AC_VERB_GET_CONNECT_SEL, 0);
734 else
735 curr = 0;
736
737 index = hda_node_index(spec->pin, pin_nid);
738 if (index < 0)
739 return -EINVAL;
740
741 spec->pin_cvt[index] = conn_list[curr];
742
743 return 0;
744 }
745
746 static void hdmi_present_sense(struct hda_codec *codec, hda_nid_t pin_nid,
747 struct hdmi_eld *eld)
748 {
749 int present = snd_hda_pin_sense(codec, pin_nid);
750
751 eld->monitor_present = !!(present & AC_PINSENSE_PRESENCE);
752 eld->eld_valid = !!(present & AC_PINSENSE_ELDV);
753
754 if (present & AC_PINSENSE_ELDV)
755 hdmi_get_show_eld(codec, pin_nid, eld);
756 }
757
758 static int hdmi_add_pin(struct hda_codec *codec, hda_nid_t pin_nid)
759 {
760 struct hdmi_spec *spec = codec->spec;
761
762 if (spec->num_pins >= MAX_HDMI_PINS) {
763 snd_printk(KERN_WARNING
764 "HDMI: no space for pin %d\n", pin_nid);
765 return -EINVAL;
766 }
767
768 hdmi_present_sense(codec, pin_nid, &spec->sink_eld[spec->num_pins]);
769
770 spec->pin[spec->num_pins] = pin_nid;
771 spec->num_pins++;
772
773 /*
774 * It is assumed that converter nodes come first in the node list and
775 * hence have been registered and usable now.
776 */
777 return hdmi_read_pin_conn(codec, pin_nid);
778 }
779
780 static int hdmi_add_cvt(struct hda_codec *codec, hda_nid_t nid)
781 {
782 struct hdmi_spec *spec = codec->spec;
783
784 if (spec->num_cvts >= MAX_HDMI_CVTS) {
785 snd_printk(KERN_WARNING
786 "HDMI: no space for converter %d\n", nid);
787 return -EINVAL;
788 }
789
790 spec->cvt[spec->num_cvts] = nid;
791 spec->num_cvts++;
792
793 return 0;
794 }
795
796 static int hdmi_parse_codec(struct hda_codec *codec)
797 {
798 hda_nid_t nid;
799 int i, nodes;
800
801 nodes = snd_hda_get_sub_nodes(codec, codec->afg, &nid);
802 if (!nid || nodes < 0) {
803 snd_printk(KERN_WARNING "HDMI: failed to get afg sub nodes\n");
804 return -EINVAL;
805 }
806
807 for (i = 0; i < nodes; i++, nid++) {
808 unsigned int caps;
809 unsigned int type;
810
811 caps = snd_hda_param_read(codec, nid, AC_PAR_AUDIO_WIDGET_CAP);
812 type = get_wcaps_type(caps);
813
814 if (!(caps & AC_WCAP_DIGITAL))
815 continue;
816
817 switch (type) {
818 case AC_WID_AUD_OUT:
819 if (hdmi_add_cvt(codec, nid) < 0)
820 return -EINVAL;
821 break;
822 case AC_WID_PIN:
823 caps = snd_hda_param_read(codec, nid, AC_PAR_PIN_CAP);
824 if (!(caps & (AC_PINCAP_HDMI | AC_PINCAP_DP)))
825 continue;
826 if (hdmi_add_pin(codec, nid) < 0)
827 return -EINVAL;
828 break;
829 }
830 }
831
832 /*
833 * G45/IbexPeak don't support EPSS: the unsolicited pin hot plug event
834 * can be lost and presence sense verb will become inaccurate if the
835 * HDA link is powered off at hot plug or hw initialization time.
836 */
837 #ifdef CONFIG_SND_HDA_POWER_SAVE
838 if (!(snd_hda_param_read(codec, codec->afg, AC_PAR_POWER_STATE) &
839 AC_PWRST_EPSS))
840 codec->bus->power_keep_link_on = 1;
841 #endif
842
843 return 0;
844 }
845
AMDTP streaming driver for the Linux FireWire stack (Juju)