sound/soc/sdw_utils/soc_sdw_rt_dmic.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 // This file incorporates work covered by the following copyright notice:
   3 // Copyright (c) 2024 Intel Corporation
   4 // Copyright (c) 2024 Advanced Micro Devices, Inc.
   5
   6 /*
   7  * soc_sdw_rt_dmic - Helpers to handle Realtek SDW DMIC from generic machine driver
   8  */
   9
  10 #include <linux/device.h>
  11 #include <linux/errno.h>
  12 #include <sound/soc.h>
  13 #include <sound/soc-acpi.h>
  14 #include <sound/soc_sdw_utils.h>
  15
  16 int asoc_sdw_rt_dmic_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai)
  17 {
  18         struct snd_soc_card *card = rtd->card;
  19         struct snd_soc_component *component;
  20         char *mic_name;
  21
  22         component = dai->component;
  23
  24         /*
  25          * rt715-sdca (aka rt714) is a special case that uses different name in card->components
  26          * and component->name_prefix.
  27          */
  28         if (!strcmp(component->name_prefix, "rt714"))
  29                 mic_name = devm_kasprintf(card->dev, GFP_KERNEL, "rt715-sdca");
  30         else
  31                 mic_name = devm_kasprintf(card->dev, GFP_KERNEL, "%s", component->name_prefix);
  32
  33         card->components = devm_kasprintf(card->dev, GFP_KERNEL,
  34                                           "%s mic:%s", card->components,
  35                                           mic_name);
  36         if (!card->components)
  37                 return -ENOMEM;
  38
  39         dev_dbg(card->dev, "card->components: %s\n", card->components);
  40
  41         return 0;
  42 }
  43 EXPORT_SYMBOL_NS(asoc_sdw_rt_dmic_rtd_init, "SND_SOC_SDW_UTILS");