93 lines
2.2 KiB
C
93 lines
2.2 KiB
C
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// SPDX-License-Identifier: GPL-2.0-only
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// Copyright (c) 2025 Texas Instruments Inc.
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/*
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* soc_sdw_ti_amp - Helpers to handle TI's soundwire based codecs
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*/
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#include <linux/device.h>
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#include <linux/errno.h>
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#include <sound/soc.h>
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#include <sound/soc-acpi.h>
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#include <sound/soc-dai.h>
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#include <sound/soc_sdw_utils.h>
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#define TIAMP_SPK_VOLUME_0DB 200
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int asoc_sdw_ti_amp_initial_settings(struct snd_soc_card *card,
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const char *name_prefix)
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{
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char *volume_ctl_name;
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int ret;
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volume_ctl_name = kasprintf(GFP_KERNEL, "%s Speaker Volume",
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name_prefix);
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if (!volume_ctl_name)
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return -ENOMEM;
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ret = snd_soc_limit_volume(card, volume_ctl_name,
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TIAMP_SPK_VOLUME_0DB);
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if (ret)
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dev_err(card->dev,
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"%s update failed %d\n",
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volume_ctl_name, ret);
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kfree(volume_ctl_name);
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return 0;
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}
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EXPORT_SYMBOL_NS(asoc_sdw_ti_amp_initial_settings, "SND_SOC_SDW_UTILS");
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int asoc_sdw_ti_spk_rtd_init(struct snd_soc_pcm_runtime *rtd,
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struct snd_soc_dai *dai)
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{
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struct snd_soc_card *card = rtd->card;
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char widget_name[16];
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char speaker[16];
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struct snd_soc_dapm_route route = {speaker, NULL, widget_name};
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struct snd_soc_dai *codec_dai;
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const char *prefix;
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int i, ret = 0;
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for_each_rtd_codec_dais(rtd, i, codec_dai) {
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if (!strstr(codec_dai->name, "tas2783"))
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continue;
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prefix = codec_dai->component->name_prefix;
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if (!strncmp(prefix, "tas2783-1", strlen("tas2783-1"))) {
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strscpy(speaker, "Left Spk", sizeof(speaker));
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} else if (!strncmp(prefix, "tas2783-2", strlen("tas2783-2"))) {
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strscpy(speaker, "Right Spk", sizeof(speaker));
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} else {
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ret = -EINVAL;
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dev_err(card->dev, "unhandled prefix %s", prefix);
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break;
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}
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snprintf(widget_name, sizeof(widget_name), "%s SPK", prefix);
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ret = asoc_sdw_ti_amp_initial_settings(card, prefix);
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if (ret)
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return ret;
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ret = snd_soc_dapm_add_routes(&card->dapm, &route, 1);
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if (ret)
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return ret;
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}
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return ret;
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}
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EXPORT_SYMBOL_NS(asoc_sdw_ti_spk_rtd_init, "SND_SOC_SDW_UTILS");
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int asoc_sdw_ti_amp_init(struct snd_soc_card *card,
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struct snd_soc_dai_link *dai_links,
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struct asoc_sdw_codec_info *info,
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bool playback)
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{
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if (!playback)
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return 0;
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info->amp_num++;
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return 0;
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}
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EXPORT_SYMBOL_NS(asoc_sdw_ti_amp_init, "SND_SOC_SDW_UTILS");
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