sound/soc/sdw_utils/soc_sdw_cs_amp.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 // This file incorporates work covered by the following copyright notice:
   3 // Copyright (c) 2023 Intel Corporation
   4 // Copyright (c) 2024 Advanced Micro Devices, Inc.
   5
   6 /*
   7  *  soc_sdw_cs_amp - Helpers to handle CS35L56 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-dai.h>
  15 #include <sound/soc_sdw_utils.h>
  16
  17 #define CODEC_NAME_SIZE 8
  18
  19 int asoc_sdw_cs_spk_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai)
  20 {
  21         const char *dai_name = rtd->dai_link->codecs->dai_name;
  22         struct snd_soc_card *card = rtd->card;
  23         char codec_name[CODEC_NAME_SIZE];
  24         char widget_name[16];
  25         struct snd_soc_dapm_route route = { "Speaker", NULL, widget_name };
  26         struct snd_soc_dai *codec_dai;
  27         int i, ret;
  28
  29         snprintf(codec_name, CODEC_NAME_SIZE, "%s", dai_name);
  30         card->components = devm_kasprintf(card->dev, GFP_KERNEL,
  31                                           "%s spk:%s",
  32                                           card->components, codec_name);
  33         if (!card->components)
  34                 return -ENOMEM;
  35
  36         for_each_rtd_codec_dais(rtd, i, codec_dai) {
  37                 if (!strstr(codec_dai->name, "cs35l56"))
  38                         continue;
  39
  40                 snprintf(widget_name, sizeof(widget_name), "%s SPK",
  41                          codec_dai->component->name_prefix);
  42                 ret = snd_soc_dapm_add_routes(&card->dapm, &route, 1);
  43                 if (ret)
  44                         return ret;
  45         }
  46
  47         return 0;
  48 }
  49 EXPORT_SYMBOL_NS(asoc_sdw_cs_spk_rtd_init, "SND_SOC_SDW_UTILS");
  50
  51 int asoc_sdw_cs_amp_init(struct snd_soc_card *card,
  52                          struct snd_soc_dai_link *dai_links,
  53                          struct asoc_sdw_codec_info *info,
  54                          bool playback)
  55 {
  56         /* Do init on playback link only. */
  57         if (!playback)
  58                 return 0;
  59
  60         info->amp_num++;
  61
  62         return 0;
  63 }
  64 EXPORT_SYMBOL_NS(asoc_sdw_cs_amp_init, "SND_SOC_SDW_UTILS");