xref: /linux/sound/soc/sdw_utils/soc_sdw_dmic.c (revision f4db95b68ae68ebaf91d35cc0487ac1cbd04261e)
1 // SPDX-License-Identifier: GPL-2.0-only
2 // This file incorporates work covered by the following copyright notice:
3 // Copyright (c) 2020 Intel Corporation
4 // Copyright (c) 2024 Advanced Micro Devices, Inc.
5 
6 /*
7  *  soc_sdw_dmic - Helpers to handle dmic from generic machine driver
8  */
9 
10 #include <sound/soc.h>
11 #include <sound/soc-acpi.h>
12 #include <sound/soc-dapm.h>
13 #include <sound/soc_sdw_utils.h>
14 
15 static const struct snd_soc_dapm_widget dmic_widgets[] = {
16 	SND_SOC_DAPM_MIC("SoC DMIC", NULL),
17 };
18 
19 static const struct snd_soc_dapm_route dmic_map[] = {
20 	/* digital mics */
21 	{"DMic", NULL, "SoC DMIC"},
22 };
23 
24 int asoc_sdw_dmic_init(struct snd_soc_pcm_runtime *rtd)
25 {
26 	struct snd_soc_card *card = rtd->card;
27 	int ret;
28 
29 	ret = snd_soc_dapm_new_controls(&card->dapm, dmic_widgets,
30 					ARRAY_SIZE(dmic_widgets));
31 	if (ret) {
32 		dev_err(card->dev, "DMic widget addition failed: %d\n", ret);
33 		/* Don't need to add routes if widget addition failed */
34 		return ret;
35 	}
36 
37 	ret = snd_soc_dapm_add_routes(&card->dapm, dmic_map,
38 				      ARRAY_SIZE(dmic_map));
39 
40 	if (ret)
41 		dev_err(card->dev, "DMic map addition failed: %d\n", ret);
42 
43 	return ret;
44 }
45 EXPORT_SYMBOL_NS(asoc_sdw_dmic_init, SND_SOC_SDW_UTILS);
46