Loading...
Note: File does not exist in v6.13.7.
1/*
2 * Intel Broxton-P I2S Machine Driver
3 *
4 * Copyright (C) 2014-2016, Intel Corporation. All rights reserved.
5 *
6 * Modified from:
7 * Intel Skylake I2S Machine driver
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License version
11 * 2 as published by the Free Software Foundation.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 */
18
19#include <linux/module.h>
20#include <linux/platform_device.h>
21#include <sound/core.h>
22#include <sound/pcm.h>
23#include <sound/soc.h>
24#include <sound/jack.h>
25#include <sound/pcm_params.h>
26#include "../../codecs/hdac_hdmi.h"
27#include "../../codecs/rt298.h"
28
29/* Headset jack detection DAPM pins */
30static struct snd_soc_jack broxton_headset;
31static struct snd_soc_jack broxton_hdmi[3];
32
33struct bxt_hdmi_pcm {
34 struct list_head head;
35 struct snd_soc_dai *codec_dai;
36 int device;
37};
38
39struct bxt_rt286_private {
40 struct list_head hdmi_pcm_list;
41};
42
43enum {
44 BXT_DPCM_AUDIO_PB = 0,
45 BXT_DPCM_AUDIO_CP,
46 BXT_DPCM_AUDIO_REF_CP,
47 BXT_DPCM_AUDIO_DMIC_CP,
48 BXT_DPCM_AUDIO_HDMI1_PB,
49 BXT_DPCM_AUDIO_HDMI2_PB,
50 BXT_DPCM_AUDIO_HDMI3_PB,
51};
52
53static struct snd_soc_jack_pin broxton_headset_pins[] = {
54 {
55 .pin = "Mic Jack",
56 .mask = SND_JACK_MICROPHONE,
57 },
58 {
59 .pin = "Headphone Jack",
60 .mask = SND_JACK_HEADPHONE,
61 },
62};
63
64static const struct snd_kcontrol_new broxton_controls[] = {
65 SOC_DAPM_PIN_SWITCH("Speaker"),
66 SOC_DAPM_PIN_SWITCH("Headphone Jack"),
67 SOC_DAPM_PIN_SWITCH("Mic Jack"),
68};
69
70static const struct snd_soc_dapm_widget broxton_widgets[] = {
71 SND_SOC_DAPM_HP("Headphone Jack", NULL),
72 SND_SOC_DAPM_SPK("Speaker", NULL),
73 SND_SOC_DAPM_MIC("Mic Jack", NULL),
74 SND_SOC_DAPM_MIC("DMIC2", NULL),
75 SND_SOC_DAPM_MIC("SoC DMIC", NULL),
76 SND_SOC_DAPM_SPK("HDMI1", NULL),
77 SND_SOC_DAPM_SPK("HDMI2", NULL),
78 SND_SOC_DAPM_SPK("HDMI3", NULL),
79};
80
81static const struct snd_soc_dapm_route broxton_rt298_map[] = {
82 /* speaker */
83 {"Speaker", NULL, "SPOR"},
84 {"Speaker", NULL, "SPOL"},
85
86 /* HP jack connectors - unknown if we have jack detect */
87 {"Headphone Jack", NULL, "HPO Pin"},
88
89 /* other jacks */
90 {"MIC1", NULL, "Mic Jack"},
91
92 /* digital mics */
93 {"DMIC1 Pin", NULL, "DMIC2"},
94 {"DMic", NULL, "SoC DMIC"},
95
96 {"HDMI1", NULL, "hif5-0 Output"},
97 {"HDMI2", NULL, "hif6-0 Output"},
98 {"HDMI2", NULL, "hif7-0 Output"},
99
100 /* CODEC BE connections */
101 { "AIF1 Playback", NULL, "ssp5 Tx"},
102 { "ssp5 Tx", NULL, "codec0_out"},
103 { "ssp5 Tx", NULL, "codec1_out"},
104
105 { "codec0_in", NULL, "ssp5 Rx" },
106 { "ssp5 Rx", NULL, "AIF1 Capture" },
107
108 { "dmic01_hifi", NULL, "DMIC01 Rx" },
109 { "DMIC01 Rx", NULL, "Capture" },
110
111 { "hifi3", NULL, "iDisp3 Tx"},
112 { "iDisp3 Tx", NULL, "iDisp3_out"},
113 { "hifi2", NULL, "iDisp2 Tx"},
114 { "iDisp2 Tx", NULL, "iDisp2_out"},
115 { "hifi1", NULL, "iDisp1 Tx"},
116 { "iDisp1 Tx", NULL, "iDisp1_out"},
117};
118
119static const struct snd_soc_dapm_route geminilake_rt298_map[] = {
120 /* speaker */
121 {"Speaker", NULL, "SPOR"},
122 {"Speaker", NULL, "SPOL"},
123
124 /* HP jack connectors - unknown if we have jack detect */
125 {"Headphone Jack", NULL, "HPO Pin"},
126
127 /* other jacks */
128 {"MIC1", NULL, "Mic Jack"},
129
130 /* digital mics */
131 {"DMIC1 Pin", NULL, "DMIC2"},
132 {"DMic", NULL, "SoC DMIC"},
133
134 {"HDMI1", NULL, "hif5-0 Output"},
135 {"HDMI2", NULL, "hif6-0 Output"},
136 {"HDMI2", NULL, "hif7-0 Output"},
137
138 /* CODEC BE connections */
139 { "AIF1 Playback", NULL, "ssp2 Tx"},
140 { "ssp2 Tx", NULL, "codec0_out"},
141 { "ssp2 Tx", NULL, "codec1_out"},
142
143 { "codec0_in", NULL, "ssp2 Rx" },
144 { "ssp2 Rx", NULL, "AIF1 Capture" },
145
146 { "dmic01_hifi", NULL, "DMIC01 Rx" },
147 { "DMIC01 Rx", NULL, "Capture" },
148
149 { "dmic_voice", NULL, "DMIC16k Rx" },
150 { "DMIC16k Rx", NULL, "Capture" },
151
152 { "hifi3", NULL, "iDisp3 Tx"},
153 { "iDisp3 Tx", NULL, "iDisp3_out"},
154 { "hifi2", NULL, "iDisp2 Tx"},
155 { "iDisp2 Tx", NULL, "iDisp2_out"},
156 { "hifi1", NULL, "iDisp1 Tx"},
157 { "iDisp1 Tx", NULL, "iDisp1_out"},
158};
159
160static int broxton_rt298_fe_init(struct snd_soc_pcm_runtime *rtd)
161{
162 struct snd_soc_dapm_context *dapm;
163 struct snd_soc_component *component = rtd->cpu_dai->component;
164
165 dapm = snd_soc_component_get_dapm(component);
166 snd_soc_dapm_ignore_suspend(dapm, "Reference Capture");
167
168 return 0;
169}
170
171static int broxton_rt298_codec_init(struct snd_soc_pcm_runtime *rtd)
172{
173 struct snd_soc_component *component = rtd->codec_dai->component;
174 int ret = 0;
175
176 ret = snd_soc_card_jack_new(rtd->card, "Headset",
177 SND_JACK_HEADSET | SND_JACK_BTN_0,
178 &broxton_headset,
179 broxton_headset_pins, ARRAY_SIZE(broxton_headset_pins));
180
181 if (ret)
182 return ret;
183
184 rt298_mic_detect(component, &broxton_headset);
185
186 snd_soc_dapm_ignore_suspend(&rtd->card->dapm, "SoC DMIC");
187
188 return 0;
189}
190
191static int broxton_hdmi_init(struct snd_soc_pcm_runtime *rtd)
192{
193 struct bxt_rt286_private *ctx = snd_soc_card_get_drvdata(rtd->card);
194 struct snd_soc_dai *dai = rtd->codec_dai;
195 struct bxt_hdmi_pcm *pcm;
196
197 pcm = devm_kzalloc(rtd->card->dev, sizeof(*pcm), GFP_KERNEL);
198 if (!pcm)
199 return -ENOMEM;
200
201 pcm->device = BXT_DPCM_AUDIO_HDMI1_PB + dai->id;
202 pcm->codec_dai = dai;
203
204 list_add_tail(&pcm->head, &ctx->hdmi_pcm_list);
205
206 return 0;
207}
208
209static int broxton_ssp5_fixup(struct snd_soc_pcm_runtime *rtd,
210 struct snd_pcm_hw_params *params)
211{
212 struct snd_interval *rate = hw_param_interval(params,
213 SNDRV_PCM_HW_PARAM_RATE);
214 struct snd_interval *channels = hw_param_interval(params,
215 SNDRV_PCM_HW_PARAM_CHANNELS);
216 struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
217
218 /* The ADSP will covert the FE rate to 48k, stereo */
219 rate->min = rate->max = 48000;
220 channels->min = channels->max = 2;
221
222 /* set SSP5 to 24 bit */
223 snd_mask_none(fmt);
224 snd_mask_set(fmt, SNDRV_PCM_FORMAT_S24_LE);
225
226 return 0;
227}
228
229static int broxton_rt298_hw_params(struct snd_pcm_substream *substream,
230 struct snd_pcm_hw_params *params)
231{
232 struct snd_soc_pcm_runtime *rtd = substream->private_data;
233 struct snd_soc_dai *codec_dai = rtd->codec_dai;
234 int ret;
235
236 ret = snd_soc_dai_set_sysclk(codec_dai, RT298_SCLK_S_PLL,
237 19200000, SND_SOC_CLOCK_IN);
238 if (ret < 0) {
239 dev_err(rtd->dev, "can't set codec sysclk configuration\n");
240 return ret;
241 }
242
243 return ret;
244}
245
246static const struct snd_soc_ops broxton_rt298_ops = {
247 .hw_params = broxton_rt298_hw_params,
248};
249
250static const unsigned int rates[] = {
251 48000,
252};
253
254static const struct snd_pcm_hw_constraint_list constraints_rates = {
255 .count = ARRAY_SIZE(rates),
256 .list = rates,
257 .mask = 0,
258};
259
260static int broxton_dmic_fixup(struct snd_soc_pcm_runtime *rtd,
261 struct snd_pcm_hw_params *params)
262{
263 struct snd_interval *channels = hw_param_interval(params,
264 SNDRV_PCM_HW_PARAM_CHANNELS);
265 channels->min = channels->max = 4;
266
267 return 0;
268}
269
270static const unsigned int channels_dmic[] = {
271 1, 2, 3, 4,
272};
273
274static const struct snd_pcm_hw_constraint_list constraints_dmic_channels = {
275 .count = ARRAY_SIZE(channels_dmic),
276 .list = channels_dmic,
277 .mask = 0,
278};
279
280static int broxton_dmic_startup(struct snd_pcm_substream *substream)
281{
282 struct snd_pcm_runtime *runtime = substream->runtime;
283
284 runtime->hw.channels_max = 4;
285 snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
286 &constraints_dmic_channels);
287
288 return snd_pcm_hw_constraint_list(substream->runtime, 0,
289 SNDRV_PCM_HW_PARAM_RATE, &constraints_rates);
290}
291
292static const struct snd_soc_ops broxton_dmic_ops = {
293 .startup = broxton_dmic_startup,
294};
295
296static const unsigned int channels[] = {
297 2,
298};
299
300static const struct snd_pcm_hw_constraint_list constraints_channels = {
301 .count = ARRAY_SIZE(channels),
302 .list = channels,
303 .mask = 0,
304};
305
306static int bxt_fe_startup(struct snd_pcm_substream *substream)
307{
308 struct snd_pcm_runtime *runtime = substream->runtime;
309
310 /*
311 * on this platform for PCM device we support:
312 * 48Khz
313 * stereo
314 * 16-bit audio
315 */
316
317 runtime->hw.channels_max = 2;
318 snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
319 &constraints_channels);
320
321 runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE;
322 snd_pcm_hw_constraint_msbits(runtime, 0, 16, 16);
323 snd_pcm_hw_constraint_list(runtime, 0,
324 SNDRV_PCM_HW_PARAM_RATE, &constraints_rates);
325
326 return 0;
327}
328
329static const struct snd_soc_ops broxton_rt286_fe_ops = {
330 .startup = bxt_fe_startup,
331};
332
333/* broxton digital audio interface glue - connects codec <--> CPU */
334static struct snd_soc_dai_link broxton_rt298_dais[] = {
335 /* Front End DAI links */
336 [BXT_DPCM_AUDIO_PB] =
337 {
338 .name = "Bxt Audio Port",
339 .stream_name = "Audio",
340 .cpu_dai_name = "System Pin",
341 .platform_name = "0000:00:0e.0",
342 .nonatomic = 1,
343 .dynamic = 1,
344 .codec_name = "snd-soc-dummy",
345 .codec_dai_name = "snd-soc-dummy-dai",
346 .init = broxton_rt298_fe_init,
347 .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
348 .dpcm_playback = 1,
349 .ops = &broxton_rt286_fe_ops,
350 },
351 [BXT_DPCM_AUDIO_CP] =
352 {
353 .name = "Bxt Audio Capture Port",
354 .stream_name = "Audio Record",
355 .cpu_dai_name = "System Pin",
356 .platform_name = "0000:00:0e.0",
357 .nonatomic = 1,
358 .dynamic = 1,
359 .codec_name = "snd-soc-dummy",
360 .codec_dai_name = "snd-soc-dummy-dai",
361 .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
362 .dpcm_capture = 1,
363 .ops = &broxton_rt286_fe_ops,
364 },
365 [BXT_DPCM_AUDIO_REF_CP] =
366 {
367 .name = "Bxt Audio Reference cap",
368 .stream_name = "refcap",
369 .cpu_dai_name = "Reference Pin",
370 .codec_name = "snd-soc-dummy",
371 .codec_dai_name = "snd-soc-dummy-dai",
372 .platform_name = "0000:00:0e.0",
373 .init = NULL,
374 .dpcm_capture = 1,
375 .nonatomic = 1,
376 .dynamic = 1,
377 },
378 [BXT_DPCM_AUDIO_DMIC_CP] =
379 {
380 .name = "Bxt Audio DMIC cap",
381 .stream_name = "dmiccap",
382 .cpu_dai_name = "DMIC Pin",
383 .codec_name = "snd-soc-dummy",
384 .codec_dai_name = "snd-soc-dummy-dai",
385 .platform_name = "0000:00:0e.0",
386 .init = NULL,
387 .dpcm_capture = 1,
388 .nonatomic = 1,
389 .dynamic = 1,
390 .ops = &broxton_dmic_ops,
391 },
392 [BXT_DPCM_AUDIO_HDMI1_PB] =
393 {
394 .name = "Bxt HDMI Port1",
395 .stream_name = "Hdmi1",
396 .cpu_dai_name = "HDMI1 Pin",
397 .codec_name = "snd-soc-dummy",
398 .codec_dai_name = "snd-soc-dummy-dai",
399 .platform_name = "0000:00:0e.0",
400 .dpcm_playback = 1,
401 .init = NULL,
402 .nonatomic = 1,
403 .dynamic = 1,
404 },
405 [BXT_DPCM_AUDIO_HDMI2_PB] =
406 {
407 .name = "Bxt HDMI Port2",
408 .stream_name = "Hdmi2",
409 .cpu_dai_name = "HDMI2 Pin",
410 .codec_name = "snd-soc-dummy",
411 .codec_dai_name = "snd-soc-dummy-dai",
412 .platform_name = "0000:00:0e.0",
413 .dpcm_playback = 1,
414 .init = NULL,
415 .nonatomic = 1,
416 .dynamic = 1,
417 },
418 [BXT_DPCM_AUDIO_HDMI3_PB] =
419 {
420 .name = "Bxt HDMI Port3",
421 .stream_name = "Hdmi3",
422 .cpu_dai_name = "HDMI3 Pin",
423 .codec_name = "snd-soc-dummy",
424 .codec_dai_name = "snd-soc-dummy-dai",
425 .platform_name = "0000:00:0e.0",
426 .dpcm_playback = 1,
427 .init = NULL,
428 .nonatomic = 1,
429 .dynamic = 1,
430 },
431 /* Back End DAI links */
432 {
433 /* SSP5 - Codec */
434 .name = "SSP5-Codec",
435 .id = 0,
436 .cpu_dai_name = "SSP5 Pin",
437 .platform_name = "0000:00:0e.0",
438 .no_pcm = 1,
439 .codec_name = "i2c-INT343A:00",
440 .codec_dai_name = "rt298-aif1",
441 .init = broxton_rt298_codec_init,
442 .dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_NB_NF |
443 SND_SOC_DAIFMT_CBS_CFS,
444 .ignore_pmdown_time = 1,
445 .be_hw_params_fixup = broxton_ssp5_fixup,
446 .ops = &broxton_rt298_ops,
447 .dpcm_playback = 1,
448 .dpcm_capture = 1,
449 },
450 {
451 .name = "dmic01",
452 .id = 1,
453 .cpu_dai_name = "DMIC01 Pin",
454 .codec_name = "dmic-codec",
455 .codec_dai_name = "dmic-hifi",
456 .platform_name = "0000:00:0e.0",
457 .be_hw_params_fixup = broxton_dmic_fixup,
458 .ignore_suspend = 1,
459 .dpcm_capture = 1,
460 .no_pcm = 1,
461 },
462 {
463 .name = "dmic16k",
464 .id = 2,
465 .cpu_dai_name = "DMIC16k Pin",
466 .codec_name = "dmic-codec",
467 .codec_dai_name = "dmic-hifi",
468 .platform_name = "0000:00:0e.0",
469 .be_hw_params_fixup = broxton_dmic_fixup,
470 .ignore_suspend = 1,
471 .dpcm_capture = 1,
472 .no_pcm = 1,
473 },
474 {
475 .name = "iDisp1",
476 .id = 3,
477 .cpu_dai_name = "iDisp1 Pin",
478 .codec_name = "ehdaudio0D2",
479 .codec_dai_name = "intel-hdmi-hifi1",
480 .platform_name = "0000:00:0e.0",
481 .init = broxton_hdmi_init,
482 .dpcm_playback = 1,
483 .no_pcm = 1,
484 },
485 {
486 .name = "iDisp2",
487 .id = 4,
488 .cpu_dai_name = "iDisp2 Pin",
489 .codec_name = "ehdaudio0D2",
490 .codec_dai_name = "intel-hdmi-hifi2",
491 .platform_name = "0000:00:0e.0",
492 .init = broxton_hdmi_init,
493 .dpcm_playback = 1,
494 .no_pcm = 1,
495 },
496 {
497 .name = "iDisp3",
498 .id = 5,
499 .cpu_dai_name = "iDisp3 Pin",
500 .codec_name = "ehdaudio0D2",
501 .codec_dai_name = "intel-hdmi-hifi3",
502 .platform_name = "0000:00:0e.0",
503 .init = broxton_hdmi_init,
504 .dpcm_playback = 1,
505 .no_pcm = 1,
506 },
507};
508
509#define NAME_SIZE 32
510static int bxt_card_late_probe(struct snd_soc_card *card)
511{
512 struct bxt_rt286_private *ctx = snd_soc_card_get_drvdata(card);
513 struct bxt_hdmi_pcm *pcm;
514 struct snd_soc_component *component = NULL;
515 int err, i = 0;
516 char jack_name[NAME_SIZE];
517
518 list_for_each_entry(pcm, &ctx->hdmi_pcm_list, head) {
519 component = pcm->codec_dai->component;
520 snprintf(jack_name, sizeof(jack_name),
521 "HDMI/DP, pcm=%d Jack", pcm->device);
522 err = snd_soc_card_jack_new(card, jack_name,
523 SND_JACK_AVOUT, &broxton_hdmi[i],
524 NULL, 0);
525
526 if (err)
527 return err;
528
529 err = hdac_hdmi_jack_init(pcm->codec_dai, pcm->device,
530 &broxton_hdmi[i]);
531 if (err < 0)
532 return err;
533
534 i++;
535 }
536
537 if (!component)
538 return -EINVAL;
539
540 return hdac_hdmi_jack_port_init(component, &card->dapm);
541}
542
543
544/* broxton audio machine driver for SPT + RT298S */
545static struct snd_soc_card broxton_rt298 = {
546 .name = "broxton-rt298",
547 .dai_link = broxton_rt298_dais,
548 .num_links = ARRAY_SIZE(broxton_rt298_dais),
549 .controls = broxton_controls,
550 .num_controls = ARRAY_SIZE(broxton_controls),
551 .dapm_widgets = broxton_widgets,
552 .num_dapm_widgets = ARRAY_SIZE(broxton_widgets),
553 .dapm_routes = broxton_rt298_map,
554 .num_dapm_routes = ARRAY_SIZE(broxton_rt298_map),
555 .fully_routed = true,
556 .late_probe = bxt_card_late_probe,
557
558};
559
560static struct snd_soc_card geminilake_rt298 = {
561 .name = "geminilake-rt298",
562 .dai_link = broxton_rt298_dais,
563 .num_links = ARRAY_SIZE(broxton_rt298_dais),
564 .controls = broxton_controls,
565 .num_controls = ARRAY_SIZE(broxton_controls),
566 .dapm_widgets = broxton_widgets,
567 .num_dapm_widgets = ARRAY_SIZE(broxton_widgets),
568 .dapm_routes = geminilake_rt298_map,
569 .num_dapm_routes = ARRAY_SIZE(geminilake_rt298_map),
570 .fully_routed = true,
571 .late_probe = bxt_card_late_probe,
572};
573
574static int broxton_audio_probe(struct platform_device *pdev)
575{
576 struct bxt_rt286_private *ctx;
577 struct snd_soc_card *card =
578 (struct snd_soc_card *)pdev->id_entry->driver_data;
579 int i;
580
581 for (i = 0; i < ARRAY_SIZE(broxton_rt298_dais); i++) {
582 if (!strncmp(card->dai_link[i].codec_name, "i2c-INT343A:00",
583 I2C_NAME_SIZE)) {
584 if (!strncmp(card->name, "broxton-rt298",
585 PLATFORM_NAME_SIZE)) {
586 card->dai_link[i].name = "SSP5-Codec";
587 card->dai_link[i].cpu_dai_name = "SSP5 Pin";
588 } else if (!strncmp(card->name, "geminilake-rt298",
589 PLATFORM_NAME_SIZE)) {
590 card->dai_link[i].name = "SSP2-Codec";
591 card->dai_link[i].cpu_dai_name = "SSP2 Pin";
592 }
593 }
594 }
595
596 ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_ATOMIC);
597 if (!ctx)
598 return -ENOMEM;
599
600 INIT_LIST_HEAD(&ctx->hdmi_pcm_list);
601
602 card->dev = &pdev->dev;
603 snd_soc_card_set_drvdata(card, ctx);
604
605 return devm_snd_soc_register_card(&pdev->dev, card);
606}
607
608static const struct platform_device_id bxt_board_ids[] = {
609 { .name = "bxt_alc298s_i2s", .driver_data =
610 (unsigned long)&broxton_rt298 },
611 { .name = "glk_alc298s_i2s", .driver_data =
612 (unsigned long)&geminilake_rt298 },
613 {}
614};
615
616static struct platform_driver broxton_audio = {
617 .probe = broxton_audio_probe,
618 .driver = {
619 .name = "bxt_alc298s_i2s",
620 .pm = &snd_soc_pm_ops,
621 },
622 .id_table = bxt_board_ids,
623};
624module_platform_driver(broxton_audio)
625
626/* Module information */
627MODULE_AUTHOR("Ramesh Babu <Ramesh.Babu@intel.com>");
628MODULE_AUTHOR("Senthilnathan Veppur <senthilnathanx.veppur@intel.com>");
629MODULE_DESCRIPTION("Intel SST Audio for Broxton");
630MODULE_LICENSE("GPL v2");
631MODULE_ALIAS("platform:bxt_alc298s_i2s");
632MODULE_ALIAS("platform:glk_alc298s_i2s");