1 // SPDX-License-Identifier: GPL-2.0-only
2 // Copyright (c) 2020 Intel Corporation
3 
4 /*
5  *  sof_sdw_dmic - Helpers to handle dmic from generic machine driver
6  */
7 
8 #include <sound/soc.h>
9 #include <sound/soc-acpi.h>
10 #include <sound/soc-dapm.h>
11 #include "sof_sdw_common.h"
12 
13 static const struct snd_soc_dapm_widget dmic_widgets[] = {
14 	SND_SOC_DAPM_MIC("SoC DMIC", NULL),
15 };
16 
17 static const struct snd_soc_dapm_route dmic_map[] = {
18 	/* digital mics */
19 	{"DMic", NULL, "SoC DMIC"},
20 };
21 
22 int sof_sdw_dmic_init(struct snd_soc_pcm_runtime *rtd)
23 {
24 	struct snd_soc_card *card = rtd->card;
25 	int ret;
26 
27 	ret = snd_soc_dapm_new_controls(&card->dapm, dmic_widgets,
28 					ARRAY_SIZE(dmic_widgets));
29 	if (ret) {
30 		dev_err(card->dev, "DMic widget addition failed: %d\n", ret);
31 		/* Don't need to add routes if widget addition failed */
32 		return ret;
33 	}
34 
35 	ret = snd_soc_dapm_add_routes(&card->dapm, dmic_map,
36 				      ARRAY_SIZE(dmic_map));
37 
38 	if (ret)
39 		dev_err(card->dev, "DMic map addition failed: %d\n", ret);
40 
41 	return ret;
42 }
43 
44