sound/soc/codecs/ad73311.c

Source file repositories/reference/linux-study-clean/sound/soc/codecs/ad73311.c

File Facts

System
Linux kernel
Corpus path
sound/soc/codecs/ad73311.c
Extension
.c
Size
1989 bytes
Lines
82
Domain
Driver Families
Bucket
sound/soc
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * ad73311.c  --  ALSA Soc AD73311 codec support
 *
 * Copyright:	Analog Devices Inc.
 * Author:	Cliff Cai <cliff.cai@analog.com>
 */

#include <linux/init.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/ac97_codec.h>
#include <sound/initval.h>
#include <sound/soc.h>

#include "ad73311.h"

static const struct snd_soc_dapm_widget ad73311_dapm_widgets[] = {
SND_SOC_DAPM_INPUT("VINP"),
SND_SOC_DAPM_INPUT("VINN"),
SND_SOC_DAPM_OUTPUT("VOUTN"),
SND_SOC_DAPM_OUTPUT("VOUTP"),
};

static const struct snd_soc_dapm_route ad73311_dapm_routes[] = {
	{ "Capture", NULL, "VINP" },
	{ "Capture", NULL, "VINN" },

	{ "VOUTN", NULL, "Playback" },
	{ "VOUTP", NULL, "Playback" },
};

static struct snd_soc_dai_driver ad73311_dai = {
	.name = "ad73311-hifi",
	.playback = {
		.stream_name = "Playback",
		.channels_min = 1,
		.channels_max = 1,
		.rates = SNDRV_PCM_RATE_8000,
		.formats = SNDRV_PCM_FMTBIT_S16_LE, },
	.capture = {
		.stream_name = "Capture",
		.channels_min = 1,
		.channels_max = 1,
		.rates = SNDRV_PCM_RATE_8000,
		.formats = SNDRV_PCM_FMTBIT_S16_LE, },
};

static const struct snd_soc_component_driver soc_component_dev_ad73311 = {
	.dapm_widgets		= ad73311_dapm_widgets,
	.num_dapm_widgets	= ARRAY_SIZE(ad73311_dapm_widgets),
	.dapm_routes		= ad73311_dapm_routes,
	.num_dapm_routes	= ARRAY_SIZE(ad73311_dapm_routes),
	.idle_bias_on		= 1,
	.use_pmdown_time	= 1,
	.endianness		= 1,
};

static int ad73311_probe(struct platform_device *pdev)
{
	return devm_snd_soc_register_component(&pdev->dev,
			&soc_component_dev_ad73311, &ad73311_dai, 1);
}

static struct platform_driver ad73311_codec_driver = {
	.driver = {
			.name = "ad73311",
	},

	.probe = ad73311_probe,
};

module_platform_driver(ad73311_codec_driver);

MODULE_DESCRIPTION("ASoC ad73311 driver");
MODULE_AUTHOR("Cliff Cai ");
MODULE_LICENSE("GPL");

Annotation

Implementation Notes