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