LXR linux/sound/soc/intel/boards/sof_sdw

   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
  16static 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
  21static const struct snd_kcontrol_new mx8373_controls[] = {
  22        SOC_DAPM_PIN_SWITCH("Left Spk"),
  23        SOC_DAPM_PIN_SWITCH("Right Spk"),
  24};
  25
  26static 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
  58static int max98373_sdw_trigger(struct snd_pcm_substream *substream, int cmd)
  59{
  60        int ret;
  61
  62        switch (cmd) {
  63        case SNDRV_PCM_TRIGGER_START:
  64        case SNDRV_PCM_TRIGGER_RESUME:
  65        case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
  66                /* enable max98373 first */
  67                ret = max98373_trigger(substream, cmd);
  68                if (ret < 0)
  69                        break;
  70
  71                ret = sdw_trigger(substream, cmd);
  72                break;
  73        case SNDRV_PCM_TRIGGER_STOP:
  74        case SNDRV_PCM_TRIGGER_SUSPEND:
  75        case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
  76                ret = sdw_trigger(substream, cmd);
  77                if (ret < 0)
  78                        break;
  79
  80                ret = max98373_trigger(substream, cmd);
  81                break;
  82        default:
  83                ret = -EINVAL;
  84                break;
  85        }
  86
  87        return ret;
  88}
  89
  90static const struct snd_soc_ops max_98373_sdw_ops = {
  91        .startup = sdw_startup,
  92        .prepare = sdw_prepare,
  93        .trigger = max98373_sdw_trigger,
  94        .hw_free = sdw_hw_free,
  95        .shutdown = sdw_shutdown,
  96};
  97
  98int sof_sdw_mx8373_init(const struct snd_soc_acpi_link_adr *link,
  99                        struct snd_soc_dai_link *dai_links,
 100                        struct sof_sdw_codec_info *info,
 101                        bool playback)
 102{
 103        info->amp_num++;
 104        if (info->amp_num == 2)
 105                dai_links->init = spk_init;
 106
 107        info->late_probe = true;
 108
 109        dai_links->ops = &max_98373_sdw_ops;
 110
 111        return 0;
 112}
 113
 114int sof_sdw_mx8373_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