mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-15 08:14:15 +08:00
792a8a944e
The ASoC core has now been changed to default to the non-legacy DAI naming, as such drivers using the new scheme no longer need to specify the non_legacy_dai_naming flag. Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com> Link: https://lore.kernel.org/r/20220623125250.2355471-58-ckeepax@opensource.cirrus.com Signed-off-by: Mark Brown <broonie@kernel.org>
88 lines
2.2 KiB
C
88 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* ALSA SoC SPDIF DIT driver
|
|
*
|
|
* This driver is used by controllers which can operate in DIT (SPDI/F) where
|
|
* no codec is needed. This file provides stub codec that can be used
|
|
* in these configurations. TI DaVinci Audio controller uses this driver.
|
|
*
|
|
* Author: Steve Chen, <schen@mvista.com>
|
|
* Copyright: (C) 2009 MontaVista Software, Inc., <source@mvista.com>
|
|
* Copyright: (C) 2009 Texas Instruments, India
|
|
*/
|
|
|
|
#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 "spdif-dit"
|
|
|
|
#define STUB_RATES SNDRV_PCM_RATE_8000_192000
|
|
#define STUB_FORMATS (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("spdif-out"),
|
|
};
|
|
|
|
static const struct snd_soc_dapm_route dit_routes[] = {
|
|
{ "spdif-out", NULL, "Playback" },
|
|
};
|
|
|
|
static struct snd_soc_component_driver soc_codec_spdif_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,
|
|
};
|
|
|
|
static struct snd_soc_dai_driver dit_stub_dai = {
|
|
.name = "dit-hifi",
|
|
.playback = {
|
|
.stream_name = "Playback",
|
|
.channels_min = 1,
|
|
.channels_max = 384,
|
|
.rates = STUB_RATES,
|
|
.formats = STUB_FORMATS,
|
|
},
|
|
};
|
|
|
|
static int spdif_dit_probe(struct platform_device *pdev)
|
|
{
|
|
return devm_snd_soc_register_component(&pdev->dev,
|
|
&soc_codec_spdif_dit,
|
|
&dit_stub_dai, 1);
|
|
}
|
|
|
|
#ifdef CONFIG_OF
|
|
static const struct of_device_id spdif_dit_dt_ids[] = {
|
|
{ .compatible = "linux,spdif-dit", },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(of, spdif_dit_dt_ids);
|
|
#endif
|
|
|
|
static struct platform_driver spdif_dit_driver = {
|
|
.probe = spdif_dit_probe,
|
|
.driver = {
|
|
.name = DRV_NAME,
|
|
.of_match_table = of_match_ptr(spdif_dit_dt_ids),
|
|
},
|
|
};
|
|
|
|
module_platform_driver(spdif_dit_driver);
|
|
|
|
MODULE_AUTHOR("Steve Chen <schen@mvista.com>");
|
|
MODULE_DESCRIPTION("SPDIF dummy codec driver");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("platform:" DRV_NAME);
|