Quelle  soc_sdw_dmic.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0-only
// This file incorporates work covered by the following copyright notice:
// Copyright (c) 2020 Intel Corporation
// Copyright (c) 2024 Advanced Micro Devices, Inc.

/*
 *  soc_sdw_dmic - Helpers to handle dmic from generic machine driver
 */

#include <sound/soc.h>
#include <sound/soc-acpi.h>
#include <sound/soc-dapm.h>
#include <sound/soc_sdw_utils.h>

static const struct snd_soc_dapm_widget dmic_widgets[] = {
 SND_SOC_DAPM_MIC("SoC DMIC", NULL),
};

static const struct snd_soc_dapm_route dmic_map[] = {
 /* digital mics */
 {"DMic", NULL, "SoC DMIC"},
};

int asoc_sdw_dmic_init(struct snd_soc_pcm_runtime *rtd)
{
 struct snd_soc_card *card = rtd->card;
 int ret;

 ret = snd_soc_dapm_new_controls(&card->dapm, dmic_widgets,
     ARRAY_SIZE(dmic_widgets));
 if (ret) {
  dev_err(card->dev, "DMic widget addition failed: %d\n", ret);
  /* Don't need to add routes if widget addition failed */
  return ret;
 }

 ret = snd_soc_dapm_add_routes(&card->dapm, dmic_map,
          ARRAY_SIZE(dmic_map));

 if (ret)
  dev_err(card->dev, "DMic map addition failed: %d\n", ret);

 return ret;
}
EXPORT_SYMBOL_NS(asoc_sdw_dmic_init, "SND_SOC_SDW_UTILS");