1 // SPDX-License-Identifier: GPL-2.0
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 "sof_sdw_common.h"
11 
12 static const struct snd_soc_dapm_widget dmic_widgets[] = {
13 	SND_SOC_DAPM_MIC("SoC DMIC", NULL),
14 };
15 
16 static const struct snd_soc_dapm_route dmic_map[] = {
17 	/* digital mics */
18 	{"DMic", NULL, "SoC DMIC"},
19 };
20 
21 int sof_sdw_dmic_init(struct snd_soc_pcm_runtime *rtd)
22 {
23 	struct snd_soc_card *card = rtd->card;
24 	int ret;
25 
26 	ret = snd_soc_dapm_new_controls(&card->dapm, dmic_widgets,
27 					ARRAY_SIZE(dmic_widgets));
28 	if (ret) {
29 		dev_err(card->dev, "DMic widget addition failed: %d\n", ret);
30 		/* Don't need to add routes if widget addition failed */
31 		return ret;
32 	}
33 
34 	ret = snd_soc_dapm_add_routes(&card->dapm, dmic_map,
35 				      ARRAY_SIZE(dmic_map));
36 
37 	if (ret)
38 		dev_err(card->dev, "DMic map addition failed: %d\n", ret);
39 
40 	return ret;
41 }
42 
43