sound/soc/intel/boards/sof_sdw_max98373.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 // Copyright (c) 2020 Intel Corporation
   3 //
   4 // sof_sdw_max98373 - Helpers to handle 2x MAX98373
   5 // codec devices from generic machine driver
   6
   7 #include <linux/device.h>
   8 #include <linux/errno.h>
   9 #include <sound/control.h>
  10 #include <sound/soc.h>
  11 #include <sound/soc-acpi.h>
  12 #include <sound/soc-dapm.h>
  13 #include "sof_sdw_common.h"
  14 #include "sof_maxim_common.h"
  15
  16 static const struct snd_soc_dapm_widget mx8373_widgets[] = {
  17         SND_SOC_DAPM_SPK("Left Spk", NULL),
  18         SND_SOC_DAPM_SPK("Right Spk", NULL),
  19 };
  20
  21 static const struct snd_kcontrol_new mx8373_controls[] = {
  22         SOC_DAPM_PIN_SWITCH("Left Spk"),
  23         SOC_DAPM_PIN_SWITCH("Right Spk"),
  24 };
  25
  26 static int spk_init(struct snd_soc_pcm_runtime *rtd)
  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:mx8373",
  33                                           card->components);
  34         if (!card->components)
  35                 return -ENOMEM;
  36
  37         ret = snd_soc_add_card_controls(card, mx8373_controls,
  38                                         ARRAY_SIZE(mx8373_controls));
  39         if (ret) {
  40                 dev_err(card->dev, "mx8373 ctrls addition failed: %d\n", ret);
  41                 return ret;
  42         }
  43
  44         ret = snd_soc_dapm_new_controls(&card->dapm, mx8373_widgets,
  45                                         ARRAY_SIZE(mx8373_widgets));
  46         if (ret) {
  47                 dev_err(card->dev, "mx8373 widgets addition failed: %d\n", ret);
  48                 return ret;
  49         }
  50
  51         ret = snd_soc_dapm_add_routes(&card->dapm, max_98373_dapm_routes, 2);
  52         if (ret)
  53                 dev_err(rtd->dev, "failed to add first SPK map: %d\n", ret);
  54
  55         return ret;
  56 }
  57
  58 static int mx8373_enable_spk_pin(struct snd_pcm_substream *substream, bool enable)
  59 {
  60         struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
  61         struct snd_soc_dai *codec_dai;
  62         struct snd_soc_dai *cpu_dai;
  63         int ret;
  64         int j;
  65
  66         /* set spk pin by playback only */
  67         if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
  68                 return 0;
  69
  70         cpu_dai = asoc_rtd_to_cpu(rtd, 0);
  71         for_each_rtd_codec_dais(rtd, j, codec_dai) {
  72                 struct snd_soc_dapm_context *dapm =
  73                                 snd_soc_component_get_dapm(cpu_dai->component);
  74                 char pin_name[16];
  75
  76                 snprintf(pin_name, ARRAY_SIZE(pin_name), "%s Spk",
  77                          codec_dai->component->name_prefix);
  78
  79                 if (enable)
  80                         ret = snd_soc_dapm_enable_pin(dapm, pin_name);
  81                 else
  82                         ret = snd_soc_dapm_disable_pin(dapm, pin_name);
  83
  84                 if (!ret)
  85                         snd_soc_dapm_sync(dapm);
  86         }
  87
  88         return 0;
  89 }
  90
  91 static int mx8373_sdw_prepare(struct snd_pcm_substream *substream)
  92 {
  93         int ret = 0;
  94
  95         /* according to soc_pcm_prepare dai link prepare is called first */
  96         ret = sdw_prepare(substream);
  97         if (ret < 0)
  98                 return ret;
  99
 100         return mx8373_enable_spk_pin(substream, true);
 101 }
 102
 103 static int mx8373_sdw_hw_free(struct snd_pcm_substream *substream)
 104 {
 105         int ret = 0;
 106
 107         /* according to soc_pcm_hw_free dai link free is called first */
 108         ret = sdw_hw_free(substream);
 109         if (ret < 0)
 110                 return ret;
 111
 112         return mx8373_enable_spk_pin(substream, false);
 113 }
 114
 115 static const struct snd_soc_ops max_98373_sdw_ops = {
 116         .startup = sdw_startup,
 117         .prepare = mx8373_sdw_prepare,
 118         .trigger = sdw_trigger,
 119         .hw_free = mx8373_sdw_hw_free,
 120         .shutdown = sdw_shutdown,
 121 };
 122
 123 int sof_sdw_mx8373_init(const struct snd_soc_acpi_link_adr *link,
 124                         struct snd_soc_dai_link *dai_links,
 125                         struct sof_sdw_codec_info *info,
 126                         bool playback)
 127 {
 128         info->amp_num++;
 129         if (info->amp_num == 2)
 130                 dai_links->init = spk_init;
 131
 132         info->late_probe = true;
 133
 134         dai_links->ops = &max_98373_sdw_ops;
 135
 136         return 0;
 137 }
 138
 139 int sof_sdw_mx8373_late_probe(struct snd_soc_card *card)
 140 {
 141         struct snd_soc_dapm_context *dapm = &card->dapm;
 142
 143         /* Disable Left and Right Spk pin after boot */
 144         snd_soc_dapm_disable_pin(dapm, "Left Spk");
 145         snd_soc_dapm_disable_pin(dapm, "Right Spk");
 146         return snd_soc_dapm_sync(dapm);
 147 }