mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-25 21:24:08 +08:00
d2912cb15b
Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
88 lines
2.2 KiB
C
88 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* ALSA SoC SPDIF DIR (Digital Interface Reciever) driver
|
|
*
|
|
* Based on ALSA SoC SPDIF DIT driver
|
|
*
|
|
* This driver is used by controllers which can operate in DIR (SPDI/F) where
|
|
* no codec is needed. This file provides stub codec that can be used
|
|
* in these configurations. SPEAr SPDIF IN Audio controller uses this driver.
|
|
*
|
|
* Author: Vipin Kumar, <vipin.kumar@st.com>
|
|
* Copyright: (C) 2012 ST Microelectronics
|
|
*/
|
|
|
|
#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>
|
|
|
|
static const struct snd_soc_dapm_widget dir_widgets[] = {
|
|
SND_SOC_DAPM_INPUT("spdif-in"),
|
|
};
|
|
|
|
static const struct snd_soc_dapm_route dir_routes[] = {
|
|
{ "Capture", NULL, "spdif-in" },
|
|
};
|
|
|
|
#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 | \
|
|
SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE)
|
|
|
|
static struct snd_soc_component_driver soc_codec_spdif_dir = {
|
|
.dapm_widgets = dir_widgets,
|
|
.num_dapm_widgets = ARRAY_SIZE(dir_widgets),
|
|
.dapm_routes = dir_routes,
|
|
.num_dapm_routes = ARRAY_SIZE(dir_routes),
|
|
.idle_bias_on = 1,
|
|
.use_pmdown_time = 1,
|
|
.endianness = 1,
|
|
.non_legacy_dai_naming = 1,
|
|
};
|
|
|
|
static struct snd_soc_dai_driver dir_stub_dai = {
|
|
.name = "dir-hifi",
|
|
.capture = {
|
|
.stream_name = "Capture",
|
|
.channels_min = 1,
|
|
.channels_max = 384,
|
|
.rates = STUB_RATES,
|
|
.formats = STUB_FORMATS,
|
|
},
|
|
};
|
|
|
|
static int spdif_dir_probe(struct platform_device *pdev)
|
|
{
|
|
return devm_snd_soc_register_component(&pdev->dev,
|
|
&soc_codec_spdif_dir,
|
|
&dir_stub_dai, 1);
|
|
}
|
|
|
|
#ifdef CONFIG_OF
|
|
static const struct of_device_id spdif_dir_dt_ids[] = {
|
|
{ .compatible = "linux,spdif-dir", },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(of, spdif_dir_dt_ids);
|
|
#endif
|
|
|
|
static struct platform_driver spdif_dir_driver = {
|
|
.probe = spdif_dir_probe,
|
|
.driver = {
|
|
.name = "spdif-dir",
|
|
.of_match_table = of_match_ptr(spdif_dir_dt_ids),
|
|
},
|
|
};
|
|
|
|
module_platform_driver(spdif_dir_driver);
|
|
|
|
MODULE_DESCRIPTION("ASoC SPDIF DIR driver");
|
|
MODULE_AUTHOR("Vipin Kumar <vipin.kumar@st.com>");
|
|
MODULE_LICENSE("GPL");
|