LXR linux/sound/soc/codecs/ads117x.c

   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 * ads117x.c  --  Driver for ads1174/8 ADC chips
   4 *
   5 * Copyright 2009 ShotSpotter Inc.
   6 * Author: Graeme Gregory <gg@slimlogic.co.uk>
   7 */
   8
   9#include <linux/kernel.h>
  10#include <linux/slab.h>
  11#include <linux/init.h>
  12#include <linux/device.h>
  13#include <linux/module.h>
  14#include <sound/core.h>
  15#include <sound/pcm.h>
  16#include <sound/initval.h>
  17#include <sound/soc.h>
  18
  19#include <linux/of.h>
  20
  21#define ADS117X_RATES (SNDRV_PCM_RATE_8000_48000)
  22#define ADS117X_FORMATS (SNDRV_PCM_FMTBIT_S16_LE)
  23
  24static const struct snd_soc_dapm_widget ads117x_dapm_widgets[] = {
  25SND_SOC_DAPM_INPUT("Input1"),
  26SND_SOC_DAPM_INPUT("Input2"),
  27SND_SOC_DAPM_INPUT("Input3"),
  28SND_SOC_DAPM_INPUT("Input4"),
  29SND_SOC_DAPM_INPUT("Input5"),
  30SND_SOC_DAPM_INPUT("Input6"),
  31SND_SOC_DAPM_INPUT("Input7"),
  32SND_SOC_DAPM_INPUT("Input8"),
  33};
  34
  35static const struct snd_soc_dapm_route ads117x_dapm_routes[] = {
  36        { "Capture", NULL, "Input1" },
  37        { "Capture", NULL, "Input2" },
  38        { "Capture", NULL, "Input3" },
  39        { "Capture", NULL, "Input4" },
  40        { "Capture", NULL, "Input5" },
  41        { "Capture", NULL, "Input6" },
  42        { "Capture", NULL, "Input7" },
  43        { "Capture", NULL, "Input8" },
  44};
  45
  46static struct snd_soc_dai_driver ads117x_dai = {
  47/* ADC */
  48        .name = "ads117x-hifi",
  49        .capture = {
  50                .stream_name = "Capture",
  51                .channels_min = 1,
  52                .channels_max = 32,
  53                .rates = ADS117X_RATES,
  54                .formats = ADS117X_FORMATS,},
  55};
  56
  57static const struct snd_soc_component_driver soc_component_dev_ads117x = {
  58        .dapm_widgets           = ads117x_dapm_widgets,
  59        .num_dapm_widgets       = ARRAY_SIZE(ads117x_dapm_widgets),
  60        .dapm_routes            = ads117x_dapm_routes,
  61        .num_dapm_routes        = ARRAY_SIZE(ads117x_dapm_routes),
  62        .idle_bias_on           = 1,
  63        .use_pmdown_time        = 1,
  64        .endianness             = 1,
  65        .non_legacy_dai_naming  = 1,
  66};
  67
  68static int ads117x_probe(struct platform_device *pdev)
  69{
  70        return devm_snd_soc_register_component(&pdev->dev,
  71                        &soc_component_dev_ads117x, &ads117x_dai, 1);
  72}
  73
  74#if defined(CONFIG_OF)
  75static const struct of_device_id ads117x_dt_ids[] = {
  76        { .compatible = "ti,ads1174" },
  77        { .compatible = "ti,ads1178" },
  78        { },
  79};
  80MODULE_DEVICE_TABLE(of, ads117x_dt_ids);
  81#endif
  82
  83static struct platform_driver ads117x_codec_driver = {
  84        .driver = {
  85                        .name = "ads117x-codec",
  86                        .of_match_table = of_match_ptr(ads117x_dt_ids),
  87        },
  88
  89        .probe = ads117x_probe,
  90};
  91
  92module_platform_driver(ads117x_codec_driver);
  93
  94MODULE_DESCRIPTION("ASoC ads117x driver");
  95MODULE_AUTHOR("Graeme Gregory");
  96MODULE_LICENSE("GPL");
  97