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// SPDX-License-Identifier: GPL-2.0
/*
* PWMDAC dummy codec driver for the StarFive JH7110 SoC
*
* Copyright (C) 2022 StarFive Technology Co., Ltd.
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/slab.h>
#include <sound/soc.h>
#include <sound/pcm.h>
#include <sound/initval.h>
#include <linux/of.h>
#define DRV_NAME "pwmdac-dit"
#define STUB_RATES SNDRV_PCM_RATE_8000_192000
#define STUB_FORMATS (SNDRV_PCM_FMTBIT_S8|\
SNDRV_PCM_FMTBIT_U8|\
SNDRV_PCM_FMTBIT_S16_LE | \
SNDRV_PCM_FMTBIT_S20_3LE | \
SNDRV_PCM_FMTBIT_S24_LE | \
SNDRV_PCM_FMTBIT_S32_LE)
static const struct snd_soc_dapm_widget dit_widgets[] = {
SND_SOC_DAPM_OUTPUT("pwmdac-out"),
};
static const struct snd_soc_dapm_route dit_routes[] = {
{ "pwmdac-out", NULL, "Playback" },
};
static struct snd_soc_component_driver soc_codec_pwmdac_dit = {
.dapm_widgets = dit_widgets,
.num_dapm_widgets = ARRAY_SIZE(dit_widgets),
.dapm_routes = dit_routes,
.num_dapm_routes = ARRAY_SIZE(dit_routes),
.idle_bias_on = 1,
.use_pmdown_time = 1,
.endianness = 1,
.non_legacy_dai_naming = 1,
};
static struct snd_soc_dai_driver dit_stub_dai = {
.name = "pwmdac-dit-hifi",
.playback = {
.stream_name = "Playback",
.channels_min = 1,
.channels_max = 384,
.rates = STUB_RATES,
.formats = STUB_FORMATS,
},
};
static int pwmdac_dit_probe(struct platform_device *pdev)
{
return devm_snd_soc_register_component(&pdev->dev,
&soc_codec_pwmdac_dit,
&dit_stub_dai, 1);
}
#ifdef CONFIG_OF
static const struct of_device_id pwmdac_dit_dt_ids[] = {
{ .compatible = "starfive,jh7110-pwmdac-dit", },
{ }
};
MODULE_DEVICE_TABLE(of, pwmdac_dit_dt_ids);
#endif
static struct platform_driver pwmdac_dit_driver = {
.probe = pwmdac_dit_probe,
.driver = {
.name = DRV_NAME,
.of_match_table = of_match_ptr(pwmdac_dit_dt_ids),
},
};
static int __init pwmdac_dit_driver_init(void)
{
return platform_driver_register(&pwmdac_dit_driver);
}
static void pwmdac_dit_driver_exit(void)
{
platform_driver_unregister(&pwmdac_dit_driver);
}
late_initcall(pwmdac_dit_driver_init);
module_exit(pwmdac_dit_driver_exit);
MODULE_AUTHOR("curry.zhang <curry.zhang@starfivetech.com>");
MODULE_DESCRIPTION("pwmdac dummy codec driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform: starfive-pwmdac dummy codec");
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