soc_sdw_dmic.c

 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
15static const struct snd_soc_dapm_widget dmic_widgets[] = {
16	SND_SOC_DAPM_MIC("SoC DMIC", NULL),
17};
18
19static const struct snd_soc_dapm_route dmic_map[] = {
20	/* digital mics */
21	{"DMic", NULL, "SoC DMIC"},
22};
23
24int asoc_sdw_dmic_init(struct snd_soc_pcm_runtime *rtd)
25{
26	struct snd_soc_card *card = rtd->card;
27	struct snd_soc_dapm_context *dapm = snd_soc_card_to_dapm(card);
28	int ret;
29
30	ret = snd_soc_dapm_new_controls(dapm, dmic_widgets,
31					ARRAY_SIZE(dmic_widgets));
32	if (ret) {
33		dev_err(card->dev, "DMic widget addition failed: %d\n", ret);
34		/* Don't need to add routes if widget addition failed */
35		return ret;
36	}
37
38	ret = snd_soc_dapm_add_routes(dapm, dmic_map,
39				      ARRAY_SIZE(dmic_map));
40
41	if (ret)
42		dev_err(card->dev, "DMic map addition failed: %d\n", ret);
43
44	return ret;
45}
46EXPORT_SYMBOL_NS(asoc_sdw_dmic_init, "SND_SOC_SDW_UTILS");