3 * patch_intelhdmi.c - Patch for Intel HDMI codecs
5 * Copyright(c) 2008 Intel Corporation. All rights reserved.
8 * Jiang Zhe <zhe.jiang@intel.com>
9 * Wu Fengguang <wfg@linux.intel.com>
12 * Wu Fengguang <wfg@linux.intel.com>
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)
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
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.
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"
36 #define CVT_NID 0x02 /* audio converter */
37 #define PIN_NID 0x03 /* HDMI output pin */
39 #define INTEL_HDMI_EVENT_TAG 0x08
41 struct intel_hdmi_spec {
42 struct hda_multi_out multiout;
43 struct hda_pcm pcm_rec;
44 struct hdmi_eld sink_eld;
47 static struct hda_verb pinout_enable_verb[] = {
48 {PIN_NID, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT},
52 static struct hda_verb pinout_disable_verb[] = {
53 {PIN_NID, AC_VERB_SET_PIN_WIDGET_CONTROL, 0x00},
57 static struct hda_verb unsolicited_response_verb[] = {
58 {PIN_NID, AC_VERB_SET_UNSOLICITED_ENABLE, AC_USRSP_EN |
59 INTEL_HDMI_EVENT_TAG},
63 static struct hda_verb def_chan_map[] = {
64 {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x00},
65 {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x11},
66 {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x22},
67 {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x33},
68 {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x44},
69 {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x55},
70 {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x66},
71 {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x77},
76 struct hdmi_audio_infoframe {
81 u8 checksum; /* PB0 */
82 u8 CC02_CT47; /* CC in bits 0:2, CT in 4:7 */
86 u8 LFEPBL01_LSV36_DM_INH7;
87 u8 reserved[5]; /* PB6 - PB10 */
91 * CEA speaker placement:
94 * FLW FL FLC FC FRC FR FRW
101 * The Left/Right Surround channel _notions_ LS/RS in SMPTE 320M corresponds to
102 * CEA RL/RR; The SMPTE channel _assignment_ C/LFE is swapped to CEA LFE/FC.
104 enum cea_speaker_placement {
105 FL = (1 << 0), /* Front Left */
106 FC = (1 << 1), /* Front Center */
107 FR = (1 << 2), /* Front Right */
108 FLC = (1 << 3), /* Front Left Center */
109 FRC = (1 << 4), /* Front Right Center */
110 RL = (1 << 5), /* Rear Left */
111 RC = (1 << 6), /* Rear Center */
112 RR = (1 << 7), /* Rear Right */
113 RLC = (1 << 8), /* Rear Left Center */
114 RRC = (1 << 9), /* Rear Right Center */
115 LFE = (1 << 10), /* Low Frequency Effect */
116 FLW = (1 << 11), /* Front Left Wide */
117 FRW = (1 << 12), /* Front Right Wide */
118 FLH = (1 << 13), /* Front Left High */
119 FCH = (1 << 14), /* Front Center High */
120 FRH = (1 << 15), /* Front Right High */
121 TC = (1 << 16), /* Top Center */
125 * ELD SA bits in the CEA Speaker Allocation data block
127 static int eld_speaker_allocation_bits[] = {
135 /* the following are not defined in ELD yet */
142 struct cea_channel_speaker_allocation {
146 /* derived values, just for convenience */
152 * This is an ordered list!
154 * The preceding ones have better chances to be selected by
155 * hdmi_setup_channel_allocation().
157 static struct cea_channel_speaker_allocation channel_allocations[] = {
158 /* channel: 8 7 6 5 4 3 2 1 */
159 { .ca_index = 0x00, .speakers = { 0, 0, 0, 0, 0, 0, FR, FL } },
161 { .ca_index = 0x01, .speakers = { 0, 0, 0, 0, 0, LFE, FR, FL } },
163 { .ca_index = 0x02, .speakers = { 0, 0, 0, 0, FC, 0, FR, FL } },
164 { .ca_index = 0x03, .speakers = { 0, 0, 0, 0, FC, LFE, FR, FL } },
165 { .ca_index = 0x04, .speakers = { 0, 0, 0, RC, 0, 0, FR, FL } },
166 { .ca_index = 0x05, .speakers = { 0, 0, 0, RC, 0, LFE, FR, FL } },
167 { .ca_index = 0x06, .speakers = { 0, 0, 0, RC, FC, 0, FR, FL } },
168 { .ca_index = 0x07, .speakers = { 0, 0, 0, RC, FC, LFE, FR, FL } },
169 { .ca_index = 0x08, .speakers = { 0, 0, RR, RL, 0, 0, FR, FL } },
170 { .ca_index = 0x09, .speakers = { 0, 0, RR, RL, 0, LFE, FR, FL } },
171 { .ca_index = 0x0a, .speakers = { 0, 0, RR, RL, FC, 0, FR, FL } },
173 { .ca_index = 0x0b, .speakers = { 0, 0, RR, RL, FC, LFE, FR, FL } },
174 { .ca_index = 0x0c, .speakers = { 0, RC, RR, RL, 0, 0, FR, FL } },
175 { .ca_index = 0x0d, .speakers = { 0, RC, RR, RL, 0, LFE, FR, FL } },
176 { .ca_index = 0x0e, .speakers = { 0, RC, RR, RL, FC, 0, FR, FL } },
178 { .ca_index = 0x0f, .speakers = { 0, RC, RR, RL, FC, LFE, FR, FL } },
179 { .ca_index = 0x10, .speakers = { RRC, RLC, RR, RL, 0, 0, FR, FL } },
180 { .ca_index = 0x11, .speakers = { RRC, RLC, RR, RL, 0, LFE, FR, FL } },
181 { .ca_index = 0x12, .speakers = { RRC, RLC, RR, RL, FC, 0, FR, FL } },
183 { .ca_index = 0x13, .speakers = { RRC, RLC, RR, RL, FC, LFE, FR, FL } },
184 { .ca_index = 0x14, .speakers = { FRC, FLC, 0, 0, 0, 0, FR, FL } },
185 { .ca_index = 0x15, .speakers = { FRC, FLC, 0, 0, 0, LFE, FR, FL } },
186 { .ca_index = 0x16, .speakers = { FRC, FLC, 0, 0, FC, 0, FR, FL } },
187 { .ca_index = 0x17, .speakers = { FRC, FLC, 0, 0, FC, LFE, FR, FL } },
188 { .ca_index = 0x18, .speakers = { FRC, FLC, 0, RC, 0, 0, FR, FL } },
189 { .ca_index = 0x19, .speakers = { FRC, FLC, 0, RC, 0, LFE, FR, FL } },
190 { .ca_index = 0x1a, .speakers = { FRC, FLC, 0, RC, FC, 0, FR, FL } },
191 { .ca_index = 0x1b, .speakers = { FRC, FLC, 0, RC, FC, LFE, FR, FL } },
192 { .ca_index = 0x1c, .speakers = { FRC, FLC, RR, RL, 0, 0, FR, FL } },
193 { .ca_index = 0x1d, .speakers = { FRC, FLC, RR, RL, 0, LFE, FR, FL } },
194 { .ca_index = 0x1e, .speakers = { FRC, FLC, RR, RL, FC, 0, FR, FL } },
195 { .ca_index = 0x1f, .speakers = { FRC, FLC, RR, RL, FC, LFE, FR, FL } },
196 { .ca_index = 0x20, .speakers = { 0, FCH, RR, RL, FC, 0, FR, FL } },
197 { .ca_index = 0x21, .speakers = { 0, FCH, RR, RL, FC, LFE, FR, FL } },
198 { .ca_index = 0x22, .speakers = { TC, 0, RR, RL, FC, 0, FR, FL } },
199 { .ca_index = 0x23, .speakers = { TC, 0, RR, RL, FC, LFE, FR, FL } },
200 { .ca_index = 0x24, .speakers = { FRH, FLH, RR, RL, 0, 0, FR, FL } },
201 { .ca_index = 0x25, .speakers = { FRH, FLH, RR, RL, 0, LFE, FR, FL } },
202 { .ca_index = 0x26, .speakers = { FRW, FLW, RR, RL, 0, 0, FR, FL } },
203 { .ca_index = 0x27, .speakers = { FRW, FLW, RR, RL, 0, LFE, FR, FL } },
204 { .ca_index = 0x28, .speakers = { TC, RC, RR, RL, FC, 0, FR, FL } },
205 { .ca_index = 0x29, .speakers = { TC, RC, RR, RL, FC, LFE, FR, FL } },
206 { .ca_index = 0x2a, .speakers = { FCH, RC, RR, RL, FC, 0, FR, FL } },
207 { .ca_index = 0x2b, .speakers = { FCH, RC, RR, RL, FC, LFE, FR, FL } },
208 { .ca_index = 0x2c, .speakers = { TC, FCH, RR, RL, FC, 0, FR, FL } },
209 { .ca_index = 0x2d, .speakers = { TC, FCH, RR, RL, FC, LFE, FR, FL } },
210 { .ca_index = 0x2e, .speakers = { FRH, FLH, RR, RL, FC, 0, FR, FL } },
211 { .ca_index = 0x2f, .speakers = { FRH, FLH, RR, RL, FC, LFE, FR, FL } },
212 { .ca_index = 0x30, .speakers = { FRW, FLW, RR, RL, FC, 0, FR, FL } },
213 { .ca_index = 0x31, .speakers = { FRW, FLW, RR, RL, FC, LFE, FR, FL } },
221 static void hdmi_get_dip_index(struct hda_codec *codec, hda_nid_t nid,
222 int *packet_index, int *byte_index)
226 val = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_HDMI_DIP_INDEX, 0);
228 *packet_index = val >> 5;
229 *byte_index = val & 0x1f;
233 static void hdmi_set_dip_index(struct hda_codec *codec, hda_nid_t nid,
234 int packet_index, int byte_index)
238 val = (packet_index << 5) | (byte_index & 0x1f);
240 snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_HDMI_DIP_INDEX, val);
243 static void hdmi_write_dip_byte(struct hda_codec *codec, hda_nid_t nid,
246 snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_HDMI_DIP_DATA, val);
249 static void hdmi_enable_output(struct hda_codec *codec)
251 /* Enable Audio InfoFrame Transmission */
252 hdmi_set_dip_index(codec, PIN_NID, 0x0, 0x0);
253 snd_hda_codec_write(codec, PIN_NID, 0, AC_VERB_SET_HDMI_DIP_XMIT,
256 if (get_wcaps(codec, PIN_NID) & AC_WCAP_OUT_AMP)
257 snd_hda_codec_write(codec, PIN_NID, 0,
258 AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE);
260 snd_hda_sequence_write(codec, pinout_enable_verb);
263 static void hdmi_disable_output(struct hda_codec *codec)
265 snd_hda_sequence_write(codec, pinout_disable_verb);
266 if (get_wcaps(codec, PIN_NID) & AC_WCAP_OUT_AMP)
267 snd_hda_codec_write(codec, PIN_NID, 0,
268 AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_MUTE);
271 * FIXME: noises may arise when playing music after reloading the
272 * kernel module, until the next X restart or monitor repower.
276 static int hdmi_get_channel_count(struct hda_codec *codec)
278 return 1 + snd_hda_codec_read(codec, CVT_NID, 0,
279 AC_VERB_GET_CVT_CHAN_COUNT, 0);
282 static void hdmi_set_channel_count(struct hda_codec *codec, int chs)
284 snd_hda_codec_write(codec, CVT_NID, 0,
285 AC_VERB_SET_CVT_CHAN_COUNT, chs - 1);
287 if (chs != hdmi_get_channel_count(codec))
288 snd_printd(KERN_INFO "HDMI channel count: expect %d, get %d\n",
289 chs, hdmi_get_channel_count(codec));
292 static void hdmi_debug_channel_mapping(struct hda_codec *codec)
294 #ifdef CONFIG_SND_DEBUG_VERBOSE
298 for (i = 0; i < 8; i++) {
299 slot = snd_hda_codec_read(codec, CVT_NID, 0,
300 AC_VERB_GET_HDMI_CHAN_SLOT, i);
301 printk(KERN_DEBUG "HDMI: ASP channel %d => slot %d\n",
302 slot >> 4, slot & 0x7);
307 static void hdmi_parse_eld(struct hda_codec *codec)
309 struct intel_hdmi_spec *spec = codec->spec;
310 struct hdmi_eld *eld = &spec->sink_eld;
312 if (!snd_hdmi_get_eld(eld, codec, PIN_NID))
313 snd_hdmi_show_eld(eld);
318 * Audio InfoFrame routines
321 static void hdmi_debug_dip_size(struct hda_codec *codec)
323 #ifdef CONFIG_SND_DEBUG_VERBOSE
327 size = snd_hdmi_get_eld_size(codec, PIN_NID);
328 printk(KERN_DEBUG "HDMI: ELD buf size is %d\n", size);
330 for (i = 0; i < 8; i++) {
331 size = snd_hda_codec_read(codec, PIN_NID, 0,
332 AC_VERB_GET_HDMI_DIP_SIZE, i);
333 printk(KERN_DEBUG "HDMI: DIP GP[%d] buf size is %d\n", i, size);
338 static void hdmi_clear_dip_buffers(struct hda_codec *codec)
344 for (i = 0; i < 8; i++) {
345 size = snd_hda_codec_read(codec, PIN_NID, 0,
346 AC_VERB_GET_HDMI_DIP_SIZE, i);
350 hdmi_set_dip_index(codec, PIN_NID, i, 0x0);
351 for (j = 1; j < 1000; j++) {
352 hdmi_write_dip_byte(codec, PIN_NID, 0x0);
353 hdmi_get_dip_index(codec, PIN_NID, &pi, &bi);
355 snd_printd(KERN_INFO "dip index %d: %d != %d\n",
357 if (bi == 0) /* byte index wrapped around */
361 "HDMI: DIP GP[%d] buf reported size=%d, written=%d\n",
367 static void hdmi_fill_audio_infoframe(struct hda_codec *codec,
368 struct hdmi_audio_infoframe *ai)
370 u8 *params = (u8 *)ai;
373 hdmi_debug_dip_size(codec);
374 hdmi_clear_dip_buffers(codec); /* be paranoid */
376 hdmi_set_dip_index(codec, PIN_NID, 0x0, 0x0);
377 for (i = 0; i < sizeof(ai); i++)
378 hdmi_write_dip_byte(codec, PIN_NID, params[i]);
382 * Compute derived values in channel_allocations[].
384 static void init_channel_allocations(void)
387 struct cea_channel_speaker_allocation *p;
389 for (i = 0; i < ARRAY_SIZE(channel_allocations); i++) {
390 p = channel_allocations + i;
393 for (j = 0; j < ARRAY_SIZE(p->speakers); j++)
394 if (p->speakers[j]) {
396 p->spk_mask |= p->speakers[j];
402 * The transformation takes two steps:
404 * eld->spk_alloc => (eld_speaker_allocation_bits[]) => spk_mask
405 * spk_mask => (channel_allocations[]) => ai->CA
407 * TODO: it could select the wrong CA from multiple candidates.
409 static int hdmi_setup_channel_allocation(struct hda_codec *codec,
410 struct hdmi_audio_infoframe *ai)
412 struct intel_hdmi_spec *spec = codec->spec;
413 struct hdmi_eld *eld = &spec->sink_eld;
416 int channels = 1 + (ai->CC02_CT47 & 0x7);
417 char buf[SND_PRINT_CHANNEL_ALLOCATION_ADVISED_BUFSIZE];
420 * CA defaults to 0 for basic stereo audio
430 * expand ELD's speaker allocation mask
432 * ELD tells the speaker mask in a compact(paired) form,
433 * expand ELD's notions to match the ones used by Audio InfoFrame.
435 for (i = 0; i < ARRAY_SIZE(eld_speaker_allocation_bits); i++) {
436 if (eld->spk_alloc & (1 << i))
437 spk_mask |= eld_speaker_allocation_bits[i];
440 /* search for the first working match in the CA table */
441 for (i = 0; i < ARRAY_SIZE(channel_allocations); i++) {
442 if (channels == channel_allocations[i].channels &&
443 (spk_mask & channel_allocations[i].spk_mask) ==
444 channel_allocations[i].spk_mask) {
445 ai->CA = channel_allocations[i].ca_index;
450 snd_print_channel_allocation(eld->spk_alloc, buf, sizeof(buf));
451 snd_printdd(KERN_INFO
452 "HDMI: select CA 0x%x for %d-channel allocation: %s\n",
453 ai->CA, channels, buf);
458 static void hdmi_setup_channel_mapping(struct hda_codec *codec,
459 struct hdmi_audio_infoframe *ai)
465 * TODO: adjust channel mapping if necessary
466 * ALSA sequence is front/surr/clfe/side?
469 snd_hda_sequence_write(codec, def_chan_map);
470 hdmi_debug_channel_mapping(codec);
474 static void hdmi_setup_audio_infoframe(struct hda_codec *codec,
475 struct snd_pcm_substream *substream)
477 struct hdmi_audio_infoframe ai = {
481 .CC02_CT47 = substream->runtime->channels - 1,
484 hdmi_setup_channel_allocation(codec, &ai);
485 hdmi_setup_channel_mapping(codec, &ai);
487 hdmi_fill_audio_infoframe(codec, &ai);
495 static void hdmi_intrinsic_event(struct hda_codec *codec, unsigned int res)
497 int pind = !!(res & AC_UNSOL_RES_PD);
498 int eldv = !!(res & AC_UNSOL_RES_ELDV);
501 "HDMI hot plug event: Presence_Detect=%d ELD_Valid=%d\n",
505 hdmi_parse_eld(codec);
506 /* TODO: do real things about ELD */
510 static void hdmi_non_intrinsic_event(struct hda_codec *codec, unsigned int res)
512 int subtag = (res & AC_UNSOL_RES_SUBTAG) >> AC_UNSOL_RES_SUBTAG_SHIFT;
513 int cp_state = !!(res & AC_UNSOL_RES_CP_STATE);
514 int cp_ready = !!(res & AC_UNSOL_RES_CP_READY);
517 "HDMI content protection event: SUBTAG=0x%x CP_STATE=%d CP_READY=%d\n",
530 static void intel_hdmi_unsol_event(struct hda_codec *codec, unsigned int res)
532 int tag = res >> AC_UNSOL_RES_TAG_SHIFT;
533 int subtag = (res & AC_UNSOL_RES_SUBTAG) >> AC_UNSOL_RES_SUBTAG_SHIFT;
535 if (tag != INTEL_HDMI_EVENT_TAG) {
536 snd_printd(KERN_INFO "Unexpected HDMI event tag 0x%x\n", tag);
541 hdmi_intrinsic_event(codec, res);
543 hdmi_non_intrinsic_event(codec, res);
550 static int intel_hdmi_playback_pcm_open(struct hda_pcm_stream *hinfo,
551 struct hda_codec *codec,
552 struct snd_pcm_substream *substream)
554 struct intel_hdmi_spec *spec = codec->spec;
556 return snd_hda_multi_out_dig_open(codec, &spec->multiout);
559 static int intel_hdmi_playback_pcm_close(struct hda_pcm_stream *hinfo,
560 struct hda_codec *codec,
561 struct snd_pcm_substream *substream)
563 struct intel_hdmi_spec *spec = codec->spec;
565 hdmi_disable_output(codec);
567 return snd_hda_multi_out_dig_close(codec, &spec->multiout);
570 static int intel_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
571 struct hda_codec *codec,
572 unsigned int stream_tag,
574 struct snd_pcm_substream *substream)
576 struct intel_hdmi_spec *spec = codec->spec;
578 snd_hda_multi_out_dig_prepare(codec, &spec->multiout, stream_tag,
581 hdmi_set_channel_count(codec, substream->runtime->channels);
583 hdmi_setup_audio_infoframe(codec, substream);
585 hdmi_enable_output(codec);
590 static struct hda_pcm_stream intel_hdmi_pcm_playback = {
594 .nid = CVT_NID, /* NID to query formats and rates and setup streams */
596 .open = intel_hdmi_playback_pcm_open,
597 .close = intel_hdmi_playback_pcm_close,
598 .prepare = intel_hdmi_playback_pcm_prepare
602 static int intel_hdmi_build_pcms(struct hda_codec *codec)
604 struct intel_hdmi_spec *spec = codec->spec;
605 struct hda_pcm *info = &spec->pcm_rec;
608 codec->pcm_info = info;
610 info->name = "INTEL HDMI";
611 info->pcm_type = HDA_PCM_TYPE_HDMI;
612 info->stream[SNDRV_PCM_STREAM_PLAYBACK] = intel_hdmi_pcm_playback;
617 static int intel_hdmi_build_controls(struct hda_codec *codec)
619 struct intel_hdmi_spec *spec = codec->spec;
622 err = snd_hda_create_spdif_out_ctls(codec, spec->multiout.dig_out_nid);
629 static int intel_hdmi_init(struct hda_codec *codec)
631 /* disable audio output as early as possible */
632 hdmi_disable_output(codec);
634 snd_hda_sequence_write(codec, unsolicited_response_verb);
639 static void intel_hdmi_free(struct hda_codec *codec)
641 struct intel_hdmi_spec *spec = codec->spec;
643 snd_hda_eld_proc_free(codec, &spec->sink_eld);
647 static struct hda_codec_ops intel_hdmi_patch_ops = {
648 .init = intel_hdmi_init,
649 .free = intel_hdmi_free,
650 .build_pcms = intel_hdmi_build_pcms,
651 .build_controls = intel_hdmi_build_controls,
652 .unsol_event = intel_hdmi_unsol_event,
655 static int patch_intel_hdmi(struct hda_codec *codec)
657 struct intel_hdmi_spec *spec;
659 spec = kzalloc(sizeof(*spec), GFP_KERNEL);
663 spec->multiout.num_dacs = 0; /* no analog */
664 spec->multiout.max_channels = 8;
665 spec->multiout.dig_out_nid = CVT_NID;
668 codec->patch_ops = intel_hdmi_patch_ops;
670 snd_hda_eld_proc_new(codec, &spec->sink_eld);
672 init_channel_allocations();
677 static struct hda_codec_preset snd_hda_preset_intelhdmi[] = {
678 { .id = 0x808629fb, .name = "G45 DEVCL", .patch = patch_intel_hdmi },
679 { .id = 0x80862801, .name = "G45 DEVBLC", .patch = patch_intel_hdmi },
680 { .id = 0x80862802, .name = "G45 DEVCTG", .patch = patch_intel_hdmi },
681 { .id = 0x80862803, .name = "G45 DEVELK", .patch = patch_intel_hdmi },
682 { .id = 0x10951392, .name = "SiI1392 HDMI", .patch = patch_intel_hdmi },
686 MODULE_ALIAS("snd-hda-codec-id:808629fb");
687 MODULE_ALIAS("snd-hda-codec-id:80862801");
688 MODULE_ALIAS("snd-hda-codec-id:80862802");
689 MODULE_ALIAS("snd-hda-codec-id:80862803");
690 MODULE_ALIAS("snd-hda-codec-id:10951392");
692 MODULE_LICENSE("GPL");
693 MODULE_DESCRIPTION("Intel HDMI HD-audio codec");
695 static struct hda_codec_preset_list intel_list = {
696 .preset = snd_hda_preset_intelhdmi,
697 .owner = THIS_MODULE,
700 static int __init patch_intelhdmi_init(void)
702 return snd_hda_add_codec_preset(&intel_list);
705 static void __exit patch_intelhdmi_exit(void)
707 snd_hda_delete_codec_preset(&intel_list);
710 module_init(patch_intelhdmi_init)
711 module_exit(patch_intelhdmi_exit)