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// SPDX-License-Identifier: GPL-2.0-only
// Copyright (c) 2020 Intel Corporation
//
// sof_sdw_max98373 - Helpers to handle 2x MAX98373
// codec devices from generic machine driver
#include <linux/device.h>
#include <linux/errno.h>
#include <sound/control.h>
#include <sound/soc.h>
#include <sound/soc-acpi.h>
#include <sound/soc-dapm.h>
#include "sof_sdw_common.h"
#include "sof_maxim_common.h"
static const struct snd_soc_dapm_widget mx8373_widgets[] = {
SND_SOC_DAPM_SPK("Left Spk", NULL),
SND_SOC_DAPM_SPK("Right Spk", NULL),
};
static const struct snd_kcontrol_new mx8373_controls[] = {
SOC_DAPM_PIN_SWITCH("Left Spk"),
SOC_DAPM_PIN_SWITCH("Right Spk"),
};
static int spk_init(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_card *card = rtd->card;
int ret;
card->components = devm_kasprintf(card->dev, GFP_KERNEL,
"%s spk:mx8373",
card->components);
if (!card->components)
return -ENOMEM;
ret = snd_soc_add_card_controls(card, mx8373_controls,
ARRAY_SIZE(mx8373_controls));
if (ret) {
dev_err(card->dev, "mx8373 ctrls addition failed: %d\n", ret);
return ret;
}
ret = snd_soc_dapm_new_controls(&card->dapm, mx8373_widgets,
ARRAY_SIZE(mx8373_widgets));
if (ret) {
dev_err(card->dev, "mx8373 widgets addition failed: %d\n", ret);
return ret;
}
ret = snd_soc_dapm_add_routes(&card->dapm, max_98373_dapm_routes, 2);
if (ret)
dev_err(rtd->dev, "failed to add first SPK map: %d\n", ret);
return ret;
}
static int mx8373_enable_spk_pin(struct snd_pcm_substream *substream, bool enable)
{
struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
struct snd_soc_dai *codec_dai;
struct snd_soc_dai *cpu_dai;
int ret;
int j;
/* set spk pin by playback only */
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
return 0;
cpu_dai = asoc_rtd_to_cpu(rtd, 0);
for_each_rtd_codec_dais(rtd, j, codec_dai) {
struct snd_soc_dapm_context *dapm =
snd_soc_component_get_dapm(cpu_dai->component);
char pin_name[16];
snprintf(pin_name, ARRAY_SIZE(pin_name), "%s Spk",
codec_dai->component->name_prefix);
if (enable)
ret = snd_soc_dapm_enable_pin(dapm, pin_name);
else
ret = snd_soc_dapm_disable_pin(dapm, pin_name);
if (!ret)
snd_soc_dapm_sync(dapm);
}
return 0;
}
static int mx8373_sdw_prepare(struct snd_pcm_substream *substream)
{
int ret;
/* according to soc_pcm_prepare dai link prepare is called first */
ret = sdw_prepare(substream);
if (ret < 0)
return ret;
return mx8373_enable_spk_pin(substream, true);
}
static int mx8373_sdw_hw_free(struct snd_pcm_substream *substream)
{
int ret;
/* according to soc_pcm_hw_free dai link free is called first */
ret = sdw_hw_free(substream);
if (ret < 0)
return ret;
return mx8373_enable_spk_pin(substream, false);
}
static const struct snd_soc_ops max_98373_sdw_ops = {
.startup = sdw_startup,
.prepare = mx8373_sdw_prepare,
.trigger = sdw_trigger,
.hw_free = mx8373_sdw_hw_free,
.shutdown = sdw_shutdown,
};
int sof_sdw_mx8373_init(struct snd_soc_card *card,
const struct snd_soc_acpi_link_adr *link,
struct snd_soc_dai_link *dai_links,
struct sof_sdw_codec_info *info,
bool playback)
{
info->amp_num++;
if (info->amp_num == 2)
dai_links->init = spk_init;
info->late_probe = true;
dai_links->ops = &max_98373_sdw_ops;
return 0;
}
int sof_sdw_mx8373_late_probe(struct snd_soc_card *card)
{
struct snd_soc_dapm_context *dapm = &card->dapm;
/* Disable Left and Right Spk pin after boot */
snd_soc_dapm_disable_pin(dapm, "Left Spk");
snd_soc_dapm_disable_pin(dapm, "Right Spk");
return snd_soc_dapm_sync(dapm);
}
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