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

   1/*
   2 * ads117x.c  --  Driver for ads1174/8 ADC chips
   3 *
   4 * Copyright 2009 ShotSpotter Inc.
   5 * Author: Graeme Gregory <gg@slimlogic.co.uk>
   6 *
   7 *  This program is free software; you can redistribute  it and/or modify it
   8 *  under  the terms of  the GNU General  Public License as published by the
   9 *  Free Software Foundation;  either version 2 of the  License, or (at your
  10 *  option) any later version.
  11 */
  12
  13#include <linux/kernel.h>
  14#include <linux/slab.h>
  15#include <linux/init.h>
  16#include <linux/device.h>
  17#include <linux/module.h>
  18#include <sound/core.h>
  19#include <sound/pcm.h>
  20#include <sound/initval.h>
  21#include <sound/soc.h>
  22
  23#define ADS117X_RATES (SNDRV_PCM_RATE_8000_48000)
  24#define ADS117X_FORMATS (SNDRV_PCM_FMTBIT_S16_LE)
  25
  26static const struct snd_soc_dapm_widget ads117x_dapm_widgets[] = {
  27SND_SOC_DAPM_INPUT("Input1"),
  28SND_SOC_DAPM_INPUT("Input2"),
  29SND_SOC_DAPM_INPUT("Input3"),
  30SND_SOC_DAPM_INPUT("Input4"),
  31SND_SOC_DAPM_INPUT("Input5"),
  32SND_SOC_DAPM_INPUT("Input6"),
  33SND_SOC_DAPM_INPUT("Input7"),
  34SND_SOC_DAPM_INPUT("Input8"),
  35};
  36
  37static const struct snd_soc_dapm_route ads117x_dapm_routes[] = {
  38        { "Capture", NULL, "Input1" },
  39        { "Capture", NULL, "Input2" },
  40        { "Capture", NULL, "Input3" },
  41        { "Capture", NULL, "Input4" },
  42        { "Capture", NULL, "Input5" },
  43        { "Capture", NULL, "Input6" },
  44        { "Capture", NULL, "Input7" },
  45        { "Capture", NULL, "Input8" },
  46};
  47
  48static struct snd_soc_dai_driver ads117x_dai = {
  49/* ADC */
  50        .name = "ads117x-hifi",
  51        .capture = {
  52                .stream_name = "Capture",
  53                .channels_min = 1,
  54                .channels_max = 32,
  55                .rates = ADS117X_RATES,
  56                .formats = ADS117X_FORMATS,},
  57};
  58
  59static struct snd_soc_codec_driver soc_codec_dev_ads117x = {
  60        .dapm_widgets = ads117x_dapm_widgets,
  61        .num_dapm_widgets = ARRAY_SIZE(ads117x_dapm_widgets),
  62        .dapm_routes = ads117x_dapm_routes,
  63        .num_dapm_routes = ARRAY_SIZE(ads117x_dapm_routes),
  64};
  65
  66static int ads117x_probe(struct platform_device *pdev)
  67{
  68        return snd_soc_register_codec(&pdev->dev,
  69                        &soc_codec_dev_ads117x, &ads117x_dai, 1);
  70}
  71
  72static int ads117x_remove(struct platform_device *pdev)
  73{
  74        snd_soc_unregister_codec(&pdev->dev);
  75        return 0;
  76}
  77
  78static struct platform_driver ads117x_codec_driver = {
  79        .driver = {
  80                        .name = "ads117x-codec",
  81                        .owner = THIS_MODULE,
  82        },
  83
  84        .probe = ads117x_probe,
  85        .remove = ads117x_remove,
  86};
  87
  88module_platform_driver(ads117x_codec_driver);
  89
  90MODULE_DESCRIPTION("ASoC ads117x driver");
  91MODULE_AUTHOR("Graeme Gregory");
  92MODULE_LICENSE("GPL");
  93