sound/soc/sdw_utils/soc_sdw_maxim.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 // soc_sdw_maxim - Helpers to handle maxim codecs
   7 // codec devices from generic machine driver
   8
   9 #include <linux/device.h>
  10 #include <linux/errno.h>
  11 #include <sound/control.h>
  12 #include <sound/soc.h>
  13 #include <sound/soc-acpi.h>
  14 #include <sound/soc-dapm.h>
  15 #include <sound/soc_sdw_utils.h>
  16
  17 static int maxim_part_id;
  18 #define SOC_SDW_PART_ID_MAX98363 0x8363
  19 #define SOC_SDW_PART_ID_MAX98373 0x8373
  20
  21 static const struct snd_soc_dapm_route max_98373_dapm_routes[] = {
  22         { "Left Spk", NULL, "Left BE_OUT" },
  23         { "Right Spk", NULL, "Right BE_OUT" },
  24 };
  25
  26 int asoc_sdw_maxim_spk_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai)
  27 {
  28         struct snd_soc_card *card = rtd->card;
  29         int ret;
  30
  31         card->components = devm_kasprintf(card->dev, GFP_KERNEL,
  32                                           "%s spk:mx%04x",
  33                                           card->components, maxim_part_id);
  34         if (!card->components)
  35                 return -ENOMEM;
  36
  37         dev_dbg(card->dev, "soundwire maxim card components assigned : %s\n",
  38                 card->components);
  39
  40         ret = snd_soc_dapm_add_routes(&card->dapm, max_98373_dapm_routes, 2);
  41         if (ret)
  42                 dev_err(rtd->dev, "failed to add first SPK map: %d\n", ret);
  43
  44         return ret;
  45 }
  46 EXPORT_SYMBOL_NS(asoc_sdw_maxim_spk_rtd_init, "SND_SOC_SDW_UTILS");
  47
  48 static int asoc_sdw_mx8373_enable_spk_pin(struct snd_pcm_substream *substream, bool enable)
  49 {
  50         struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
  51         struct snd_soc_dai *codec_dai;
  52         struct snd_soc_dai *cpu_dai;
  53         int ret;
  54         int j;
  55
  56         /* set spk pin by playback only */
  57         if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
  58                 return 0;
  59
  60         cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
  61         for_each_rtd_codec_dais(rtd, j, codec_dai) {
  62                 struct snd_soc_dapm_context *dapm =
  63                                 snd_soc_component_get_dapm(cpu_dai->component);
  64                 char pin_name[16];
  65
  66                 snprintf(pin_name, ARRAY_SIZE(pin_name), "%s Spk",
  67                          codec_dai->component->name_prefix);
  68
  69                 if (enable)
  70                         ret = snd_soc_dapm_enable_pin(dapm, pin_name);
  71                 else
  72                         ret = snd_soc_dapm_disable_pin(dapm, pin_name);
  73
  74                 if (!ret)
  75                         snd_soc_dapm_sync(dapm);
  76         }
  77
  78         return 0;
  79 }
  80
  81 static int asoc_sdw_mx8373_prepare(struct snd_pcm_substream *substream)
  82 {
  83         int ret;
  84
  85         /* according to soc_pcm_prepare dai link prepare is called first */
  86         ret = asoc_sdw_prepare(substream);
  87         if (ret < 0)
  88                 return ret;
  89
  90         return asoc_sdw_mx8373_enable_spk_pin(substream, true);
  91 }
  92
  93 static int asoc_sdw_mx8373_hw_free(struct snd_pcm_substream *substream)
  94 {
  95         int ret;
  96
  97         /* according to soc_pcm_hw_free dai link free is called first */
  98         ret = asoc_sdw_hw_free(substream);
  99         if (ret < 0)
 100                 return ret;
 101
 102         return asoc_sdw_mx8373_enable_spk_pin(substream, false);
 103 }
 104
 105 static const struct snd_soc_ops max_98373_sdw_ops = {
 106         .startup = asoc_sdw_startup,
 107         .prepare = asoc_sdw_mx8373_prepare,
 108         .trigger = asoc_sdw_trigger,
 109         .hw_params = asoc_sdw_hw_params,
 110         .hw_free = asoc_sdw_mx8373_hw_free,
 111         .shutdown = asoc_sdw_shutdown,
 112 };
 113
 114 static int asoc_sdw_mx8373_sdw_late_probe(struct snd_soc_card *card)
 115 {
 116         struct snd_soc_dapm_context *dapm = &card->dapm;
 117
 118         /* Disable Left and Right Spk pin after boot */
 119         snd_soc_dapm_disable_pin(dapm, "Left Spk");
 120         snd_soc_dapm_disable_pin(dapm, "Right Spk");
 121         return snd_soc_dapm_sync(dapm);
 122 }
 123
 124 int asoc_sdw_maxim_init(struct snd_soc_card *card,
 125                         struct snd_soc_dai_link *dai_links,
 126                         struct asoc_sdw_codec_info *info,
 127                         bool playback)
 128 {
 129         info->amp_num++;
 130
 131         maxim_part_id = info->part_id;
 132         switch (maxim_part_id) {
 133         case SOC_SDW_PART_ID_MAX98363:
 134                 /* Default ops are set in function init_dai_link.
 135                  * called as part of function create_sdw_dailink
 136                  */
 137                 break;
 138         case SOC_SDW_PART_ID_MAX98373:
 139                 info->codec_card_late_probe = asoc_sdw_mx8373_sdw_late_probe;
 140                 dai_links->ops = &max_98373_sdw_ops;
 141                 break;
 142         default:
 143                 dev_err(card->dev, "Invalid maxim_part_id %#x\n", maxim_part_id);
 144                 return -EINVAL;
 145         }
 146         return 0;
 147 }
 148 EXPORT_SYMBOL_NS(asoc_sdw_maxim_init, "SND_SOC_SDW_UTILS");