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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/sound/soc/codecs/ads117x.c
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// SPDX-License-Identifier: GPL-2.0-or-later

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/*

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 * ads117x.c  --  Driver for ads1174/8 ADC chips

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 *

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 * Copyright 2009 ShotSpotter Inc.

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 * Author: Graeme Gregory <[email protected]>

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 */

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#include <linux/kernel.h>

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#include <linux/slab.h>

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#include <linux/init.h>

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#include <linux/device.h>

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#include <linux/module.h>

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#include <sound/core.h>

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#include <sound/pcm.h>

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#include <sound/initval.h>

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#include <sound/soc.h>

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#include <linux/of.h>

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#define ADS117X_RATES (SNDRV_PCM_RATE_8000_48000)

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#define ADS117X_FORMATS (SNDRV_PCM_FMTBIT_S16_LE)

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static const struct snd_soc_dapm_widget ads117x_dapm_widgets[] = {

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SND_SOC_DAPM_INPUT("Input1"),

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SND_SOC_DAPM_INPUT("Input2"),

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SND_SOC_DAPM_INPUT("Input3"),

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SND_SOC_DAPM_INPUT("Input4"),

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SND_SOC_DAPM_INPUT("Input5"),

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SND_SOC_DAPM_INPUT("Input6"),

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SND_SOC_DAPM_INPUT("Input7"),

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SND_SOC_DAPM_INPUT("Input8"),

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};

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static const struct snd_soc_dapm_route ads117x_dapm_routes[] = {

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	{ "Capture", NULL, "Input1" },

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	{ "Capture", NULL, "Input2" },

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	{ "Capture", NULL, "Input3" },

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	{ "Capture", NULL, "Input4" },

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	{ "Capture", NULL, "Input5" },

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	{ "Capture", NULL, "Input6" },

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	{ "Capture", NULL, "Input7" },

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	{ "Capture", NULL, "Input8" },

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};

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static struct snd_soc_dai_driver ads117x_dai = {

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/* ADC */

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	.name = "ads117x-hifi",

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	.capture = {

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		.stream_name = "Capture",

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		.channels_min = 1,

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		.channels_max = 32,

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		.rates = ADS117X_RATES,

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		.formats = ADS117X_FORMATS,},

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};

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static const struct snd_soc_component_driver soc_component_dev_ads117x = {

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	.dapm_widgets		= ads117x_dapm_widgets,

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	.num_dapm_widgets	= ARRAY_SIZE(ads117x_dapm_widgets),

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	.dapm_routes		= ads117x_dapm_routes,

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	.num_dapm_routes	= ARRAY_SIZE(ads117x_dapm_routes),

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	.idle_bias_on		= 1,

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	.use_pmdown_time	= 1,

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	.endianness		= 1,

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};

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static int ads117x_probe(struct platform_device *pdev)

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{

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	return devm_snd_soc_register_component(&pdev->dev,

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			&soc_component_dev_ads117x, &ads117x_dai, 1);

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}

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#if defined(CONFIG_OF)

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static const struct of_device_id ads117x_dt_ids[] = {

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	{ .compatible = "ti,ads1174" },

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	{ .compatible = "ti,ads1178" },

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	{ },

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};

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MODULE_DEVICE_TABLE(of, ads117x_dt_ids);

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#endif

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static struct platform_driver ads117x_codec_driver = {

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	.driver = {

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			.name = "ads117x-codec",

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			.of_match_table = of_match_ptr(ads117x_dt_ids),

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	},

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	.probe = ads117x_probe,

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};

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module_platform_driver(ads117x_codec_driver);

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MODULE_DESCRIPTION("ASoC ads117x driver");

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MODULE_AUTHOR("Graeme Gregory");

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MODULE_LICENSE("GPL");

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