106 lines
2.7 KiB
C
106 lines
2.7 KiB
C
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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 <gg@slimlogic.co.uk>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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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 struct snd_soc_codec_driver soc_codec_dev_ads117x = {
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.component_driver = {
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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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},
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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 snd_soc_register_codec(&pdev->dev,
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&soc_codec_dev_ads117x, &ads117x_dai, 1);
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}
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static int ads117x_remove(struct platform_device *pdev)
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{
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snd_soc_unregister_codec(&pdev->dev);
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return 0;
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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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.remove = ads117x_remove,
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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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