intel/boards/sof_sdw_max98373.c

0001 // SPDX-License-Identifier: GPL-2.0-only
0002 // Copyright (c) 2020 Intel Corporation
0003 //
0004 // sof_sdw_max98373 - Helpers to handle 2x MAX98373
0005 // codec devices from generic machine driver
0006
0007 #include <linux/device.h>
0008 #include <linux/errno.h>
0009 #include <sound/control.h>
0010 #include <sound/soc.h>
0011 #include <sound/soc-acpi.h>
0012 #include <sound/soc-dapm.h>
0013 #include "sof_sdw_common.h"
0014 #include "sof_maxim_common.h"
0015
0016 static const struct snd_soc_dapm_widget mx8373_widgets[] = {
0017     SND_SOC_DAPM_SPK("Left Spk", NULL),
0018     SND_SOC_DAPM_SPK("Right Spk", NULL),
0019 };
0020
0021 static const struct snd_kcontrol_new mx8373_controls[] = {
0022     SOC_DAPM_PIN_SWITCH("Left Spk"),
0023     SOC_DAPM_PIN_SWITCH("Right Spk"),
0024 };
0025
0026 static int spk_init(struct snd_soc_pcm_runtime *rtd)
0027 {
0028     struct snd_soc_card *card = rtd->card;
0029     int ret;
0030
0031     card->components = devm_kasprintf(card->dev, GFP_KERNEL,
0032                       "%s spk:mx8373",
0033                       card->components);
0034     if (!card->components)
0035         return -ENOMEM;
0036
0037     ret = snd_soc_add_card_controls(card, mx8373_controls,
0038                     ARRAY_SIZE(mx8373_controls));
0039     if (ret) {
0040         dev_err(card->dev, "mx8373 ctrls addition failed: %d\n", ret);
0041         return ret;
0042     }
0043
0044     ret = snd_soc_dapm_new_controls(&card->dapm, mx8373_widgets,
0045                     ARRAY_SIZE(mx8373_widgets));
0046     if (ret) {
0047         dev_err(card->dev, "mx8373 widgets addition failed: %d\n", ret);
0048         return ret;
0049     }
0050
0051     ret = snd_soc_dapm_add_routes(&card->dapm, max_98373_dapm_routes, 2);
0052     if (ret)
0053         dev_err(rtd->dev, "failed to add first SPK map: %d\n", ret);
0054
0055     return ret;
0056 }
0057
0058 static int mx8373_enable_spk_pin(struct snd_pcm_substream *substream, bool enable)
0059 {
0060     struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
0061     struct snd_soc_dai *codec_dai;
0062     struct snd_soc_dai *cpu_dai;
0063     int ret;
0064     int j;
0065
0066     /* set spk pin by playback only */
0067     if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
0068         return 0;
0069
0070     cpu_dai = asoc_rtd_to_cpu(rtd, 0);
0071     for_each_rtd_codec_dais(rtd, j, codec_dai) {
0072         struct snd_soc_dapm_context *dapm =
0073                 snd_soc_component_get_dapm(cpu_dai->component);
0074         char pin_name[16];
0075
0076         snprintf(pin_name, ARRAY_SIZE(pin_name), "%s Spk",
0077              codec_dai->component->name_prefix);
0078
0079         if (enable)
0080             ret = snd_soc_dapm_enable_pin(dapm, pin_name);
0081         else
0082             ret = snd_soc_dapm_disable_pin(dapm, pin_name);
0083
0084         if (!ret)
0085             snd_soc_dapm_sync(dapm);
0086     }
0087
0088     return 0;
0089 }
0090
0091 static int mx8373_sdw_prepare(struct snd_pcm_substream *substream)
0092 {
0093     int ret;
0094
0095     /* according to soc_pcm_prepare dai link prepare is called first */
0096     ret = sdw_prepare(substream);
0097     if (ret < 0)
0098         return ret;
0099
0100     return mx8373_enable_spk_pin(substream, true);
0101 }
0102
0103 static int mx8373_sdw_hw_free(struct snd_pcm_substream *substream)
0104 {
0105     int ret;
0106
0107     /* according to soc_pcm_hw_free dai link free is called first */
0108     ret = sdw_hw_free(substream);
0109     if (ret < 0)
0110         return ret;
0111
0112     return mx8373_enable_spk_pin(substream, false);
0113 }
0114
0115 static const struct snd_soc_ops max_98373_sdw_ops = {
0116     .startup = sdw_startup,
0117     .prepare = mx8373_sdw_prepare,
0118     .trigger = sdw_trigger,
0119     .hw_free = mx8373_sdw_hw_free,
0120     .shutdown = sdw_shutdown,
0121 };
0122
0123 int sof_sdw_mx8373_init(struct snd_soc_card *card,
0124             const struct snd_soc_acpi_link_adr *link,
0125             struct snd_soc_dai_link *dai_links,
0126             struct sof_sdw_codec_info *info,
0127             bool playback)
0128 {
0129     info->amp_num++;
0130     if (info->amp_num == 2)
0131         dai_links->init = spk_init;
0132
0133     info->late_probe = true;
0134
0135     dai_links->ops = &max_98373_sdw_ops;
0136
0137     return 0;
0138 }
0139
0140 int sof_sdw_mx8373_late_probe(struct snd_soc_card *card)
0141 {
0142     struct snd_soc_dapm_context *dapm = &card->dapm;
0143
0144     /* Disable Left and Right Spk pin after boot */
0145     snd_soc_dapm_disable_pin(dapm, "Left Spk");
0146     snd_soc_dapm_disable_pin(dapm, "Right Spk");
0147     return snd_soc_dapm_sync(dapm);
0148 }