sound/soc/intel/boards/sof_sdw_maxim.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 // Copyright (c) 2020 Intel Corporation
   3 //
   4 // sof_sdw_maxim - Helpers to handle maxim codecs
   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 int maxim_part_id;
  17 #define SOF_SDW_PART_ID_MAX98363 0x8363
  18 #define SOF_SDW_PART_ID_MAX98373 0x8373
  19
  20 static const struct snd_soc_dapm_widget maxim_widgets[] = {
  21         SND_SOC_DAPM_SPK("Left Spk", NULL),
  22         SND_SOC_DAPM_SPK("Right Spk", NULL),
  23 };
  24
  25 static const struct snd_kcontrol_new maxim_controls[] = {
  26         SOC_DAPM_PIN_SWITCH("Left Spk"),
  27         SOC_DAPM_PIN_SWITCH("Right Spk"),
  28 };
  29
  30 static int spk_init(struct snd_soc_pcm_runtime *rtd)
  31 {
  32         struct snd_soc_card *card = rtd->card;
  33         int ret;
  34
  35         card->components = devm_kasprintf(card->dev, GFP_KERNEL,
  36                                           "%s spk:mx%04x",
  37                                           card->components, maxim_part_id);
  38         if (!card->components)
  39                 return -ENOMEM;
  40
  41         dev_dbg(card->dev, "soundwire maxim card components assigned : %s\n",
  42                 card->components);
  43
  44         ret = snd_soc_add_card_controls(card, maxim_controls,
  45                                         ARRAY_SIZE(maxim_controls));
  46         if (ret) {
  47                 dev_err(card->dev, "mx%04x ctrls addition failed: %d\n", maxim_part_id, ret);
  48                 return ret;
  49         }
  50
  51         ret = snd_soc_dapm_new_controls(&card->dapm, maxim_widgets,
  52                                         ARRAY_SIZE(maxim_widgets));
  53         if (ret) {
  54                 dev_err(card->dev, "mx%04x widgets addition failed: %d\n", maxim_part_id, ret);
  55                 return ret;
  56         }
  57
  58         ret = snd_soc_dapm_add_routes(&card->dapm, max_98373_dapm_routes, 2);
  59         if (ret)
  60                 dev_err(rtd->dev, "failed to add first SPK map: %d\n", ret);
  61
  62         return ret;
  63 }
  64
  65 static int mx8373_enable_spk_pin(struct snd_pcm_substream *substream, bool enable)
  66 {
  67         struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
  68         struct snd_soc_dai *codec_dai;
  69         struct snd_soc_dai *cpu_dai;
  70         int ret;
  71         int j;
  72
  73         /* set spk pin by playback only */
  74         if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
  75                 return 0;
  76
  77         cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
  78         for_each_rtd_codec_dais(rtd, j, codec_dai) {
  79                 struct snd_soc_dapm_context *dapm =
  80                                 snd_soc_component_get_dapm(cpu_dai->component);
  81                 char pin_name[16];
  82
  83                 snprintf(pin_name, ARRAY_SIZE(pin_name), "%s Spk",
  84                          codec_dai->component->name_prefix);
  85
  86                 if (enable)
  87                         ret = snd_soc_dapm_enable_pin(dapm, pin_name);
  88                 else
  89                         ret = snd_soc_dapm_disable_pin(dapm, pin_name);
  90
  91                 if (!ret)
  92                         snd_soc_dapm_sync(dapm);
  93         }
  94
  95         return 0;
  96 }
  97
  98 static int mx8373_sdw_prepare(struct snd_pcm_substream *substream)
  99 {
 100         int ret;
 101
 102         /* according to soc_pcm_prepare dai link prepare is called first */
 103         ret = sdw_prepare(substream);
 104         if (ret < 0)
 105                 return ret;
 106
 107         return mx8373_enable_spk_pin(substream, true);
 108 }
 109
 110 static int mx8373_sdw_hw_free(struct snd_pcm_substream *substream)
 111 {
 112         int ret;
 113
 114         /* according to soc_pcm_hw_free dai link free is called first */
 115         ret = sdw_hw_free(substream);
 116         if (ret < 0)
 117                 return ret;
 118
 119         return mx8373_enable_spk_pin(substream, false);
 120 }
 121
 122 static const struct snd_soc_ops max_98373_sdw_ops = {
 123         .startup = sdw_startup,
 124         .prepare = mx8373_sdw_prepare,
 125         .trigger = sdw_trigger,
 126         .hw_params = sdw_hw_params,
 127         .hw_free = mx8373_sdw_hw_free,
 128         .shutdown = sdw_shutdown,
 129 };
 130
 131 static int mx8373_sdw_late_probe(struct snd_soc_card *card)
 132 {
 133         struct snd_soc_dapm_context *dapm = &card->dapm;
 134
 135         /* Disable Left and Right Spk pin after boot */
 136         snd_soc_dapm_disable_pin(dapm, "Left Spk");
 137         snd_soc_dapm_disable_pin(dapm, "Right Spk");
 138         return snd_soc_dapm_sync(dapm);
 139 }
 140
 141 int sof_sdw_maxim_init(struct snd_soc_card *card,
 142                        const struct snd_soc_acpi_link_adr *link,
 143                        struct snd_soc_dai_link *dai_links,
 144                        struct sof_sdw_codec_info *info,
 145                        bool playback)
 146 {
 147         info->amp_num++;
 148         if (info->amp_num == 2)
 149                 dai_links->init = spk_init;
 150
 151         maxim_part_id = info->part_id;
 152         switch (maxim_part_id) {
 153         case SOF_SDW_PART_ID_MAX98363:
 154                 /* Default ops are set in function init_dai_link.
 155                  * called as part of function create_sdw_dailink
 156                  */
 157                 break;
 158         case SOF_SDW_PART_ID_MAX98373:
 159                 info->codec_card_late_probe = mx8373_sdw_late_probe;
 160                 dai_links->ops = &max_98373_sdw_ops;
 161                 break;
 162         default:
 163                 dev_err(card->dev, "Invalid maxim_part_id %#x\n", maxim_part_id);
 164                 return -EINVAL;
 165         }
 166         return 0;
 167 }