mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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a0d3546cf9
This patch adds support for the ADAU7002 PDM-to-I2S/TDM converter. The ADAU7002 takes a stereo PDM signal (e.g. from two digital microphones) and converts it into a I2S/TDM PCM stream. The chip does not have a programmable control interface and the driver simply describes the static capabilities of the chip. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Mark Brown <broonie@kernel.org>
81 lines
2.0 KiB
C
81 lines
2.0 KiB
C
/*
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* ADAU7002 Stereo PDM-to-I2S/TDM converter driver
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*
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* Copyright 2014-2016 Analog Devices
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* Author: Lars-Peter Clausen <lars@metafoo.de>
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*
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* Licensed under the GPL-2.
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/platform_device.h>
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#include <sound/soc.h>
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static const struct snd_soc_dapm_widget adau7002_widgets[] = {
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SND_SOC_DAPM_INPUT("PDM_DAT"),
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SND_SOC_DAPM_REGULATOR_SUPPLY("IOVDD", 0, 0),
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};
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static const struct snd_soc_dapm_route adau7002_routes[] = {
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{ "Capture", NULL, "PDM_DAT" },
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{ "Capture", NULL, "IOVDD" },
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};
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static struct snd_soc_dai_driver adau7002_dai = {
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.name = "adau7002-hifi",
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.capture = {
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.stream_name = "Capture",
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.channels_min = 2,
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.channels_max = 2,
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.rates = SNDRV_PCM_RATE_8000_96000,
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.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S18_3LE |
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SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE |
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SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE,
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.sig_bits = 20,
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},
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};
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static const struct snd_soc_codec_driver adau7002_codec_driver = {
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.dapm_widgets = adau7002_widgets,
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.num_dapm_widgets = ARRAY_SIZE(adau7002_widgets),
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.dapm_routes = adau7002_routes,
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.num_dapm_routes = ARRAY_SIZE(adau7002_routes),
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};
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static int adau7002_probe(struct platform_device *pdev)
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{
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return snd_soc_register_codec(&pdev->dev, &adau7002_codec_driver,
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&adau7002_dai, 1);
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}
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static int adau7002_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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#ifdef CONFIG_OF
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static const struct of_device_id adau7002_dt_ids[] = {
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{ .compatible = "adi,adau7002", },
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{ }
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};
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MODULE_DEVICE_TABLE(of, adau7002_dt_ids);
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#endif
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static struct platform_driver adau7002_driver = {
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.driver = {
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.name = "adau7002",
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.of_match_table = of_match_ptr(adau7002_dt_ids),
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},
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.probe = adau7002_probe,
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.remove = adau7002_remove,
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};
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module_platform_driver(adau7002_driver);
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MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
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MODULE_DESCRIPTION("ADAU7002 Stereo PDM-to-I2S/TDM Converter driver");
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MODULE_LICENSE("GPL v2");
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