LXR linux/sound/soc/codecs/adau7002.c

   1/*
   2 * ADAU7002 Stereo PDM-to-I2S/TDM converter driver
   3 *
   4 * Copyright 2014-2016 Analog Devices
   5 *  Author: Lars-Peter Clausen <lars@metafoo.de>
   6 *
   7 * Licensed under the GPL-2.
   8 */
   9
  10#include <linux/acpi.h>
  11#include <linux/init.h>
  12#include <linux/module.h>
  13#include <linux/of.h>
  14#include <linux/platform_device.h>
  15
  16#include <sound/soc.h>
  17
  18static const struct snd_soc_dapm_widget adau7002_widgets[] = {
  19        SND_SOC_DAPM_INPUT("PDM_DAT"),
  20        SND_SOC_DAPM_REGULATOR_SUPPLY("IOVDD", 0, 0),
  21};
  22
  23static const struct snd_soc_dapm_route adau7002_routes[] = {
  24        { "Capture", NULL, "PDM_DAT" },
  25        { "Capture", NULL, "IOVDD" },
  26};
  27
  28static struct snd_soc_dai_driver adau7002_dai = {
  29        .name = "adau7002-hifi",
  30        .capture = {
  31                .stream_name = "Capture",
  32                .channels_min = 2,
  33                .channels_max = 2,
  34                .rates = SNDRV_PCM_RATE_8000_96000,
  35                .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S18_3LE |
  36                        SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE |
  37                        SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE,
  38                .sig_bits = 20,
  39        },
  40};
  41
  42static const struct snd_soc_component_driver adau7002_component_driver = {
  43        .dapm_widgets           = adau7002_widgets,
  44        .num_dapm_widgets       = ARRAY_SIZE(adau7002_widgets),
  45        .dapm_routes            = adau7002_routes,
  46        .num_dapm_routes        = ARRAY_SIZE(adau7002_routes),
  47        .idle_bias_on           = 1,
  48        .use_pmdown_time        = 1,
  49        .endianness             = 1,
  50        .non_legacy_dai_naming  = 1,
  51};
  52
  53static int adau7002_probe(struct platform_device *pdev)
  54{
  55        return devm_snd_soc_register_component(&pdev->dev,
  56                        &adau7002_component_driver,
  57                        &adau7002_dai, 1);
  58}
  59
  60static int adau7002_remove(struct platform_device *pdev)
  61{
  62        return 0;
  63}
  64
  65#ifdef CONFIG_OF
  66static const struct of_device_id adau7002_dt_ids[] = {
  67        { .compatible = "adi,adau7002", },
  68        { }
  69};
  70MODULE_DEVICE_TABLE(of, adau7002_dt_ids);
  71#endif
  72
  73#ifdef CONFIG_ACPI
  74static const struct acpi_device_id adau7002_acpi_match[] = {
  75        { "ADAU7002", 0 },
  76        {},
  77};
  78MODULE_DEVICE_TABLE(acpi, adau7002_acpi_match);
  79#endif
  80
  81static struct platform_driver adau7002_driver = {
  82        .driver = {
  83                .name = "adau7002",
  84                .of_match_table = of_match_ptr(adau7002_dt_ids),
  85                .acpi_match_table = ACPI_PTR(adau7002_acpi_match),
  86        },
  87        .probe = adau7002_probe,
  88        .remove = adau7002_remove,
  89};
  90module_platform_driver(adau7002_driver);
  91
  92MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
  93MODULE_DESCRIPTION("ADAU7002 Stereo PDM-to-I2S/TDM Converter driver");
  94MODULE_LICENSE("GPL v2");
  95