text: /*
   * ads117x.c  --  Driver for ads1174/8 ADC chips
   *
   * Copyright 2009 ShotSpotter Inc.
   * Author: Graeme Gregory <gg@slimlogic.co.uk>
   *
   *  This program is free software; you can redistribute  it and/or modify it
   *  under  the terms of  the GNU General  Public License as published by the
   *  Free Software Foundation;  either version 2 of the  License, or (at your
   *  option) any later version.
   */
  
  #include <linux/kernel.h>
  #include <linux/slab.h>
  #include <linux/init.h>
  #include <linux/device.h>
  #include <linux/module.h>
  #include <sound/core.h>
  #include <sound/pcm.h>
  #include <sound/initval.h>
  #include <sound/soc.h>
  
  #include <linux/of.h>
  
  #define ADS117X_RATES (SNDRV_PCM_RATE_8000_48000)
  #define ADS117X_FORMATS (SNDRV_PCM_FMTBIT_S16_LE)
  
  static const struct snd_soc_dapm_widget ads117x_dapm_widgets[] = {
  SND_SOC_DAPM_INPUT("Input1"),
  SND_SOC_DAPM_INPUT("Input2"),
  SND_SOC_DAPM_INPUT("Input3"),
  SND_SOC_DAPM_INPUT("Input4"),
  SND_SOC_DAPM_INPUT("Input5"),
  SND_SOC_DAPM_INPUT("Input6"),
  SND_SOC_DAPM_INPUT("Input7"),
  SND_SOC_DAPM_INPUT("Input8"),
  };
  
  static const struct snd_soc_dapm_route ads117x_dapm_routes[] = {
  	{ "Capture", NULL, "Input1" },
  	{ "Capture", NULL, "Input2" },
  	{ "Capture", NULL, "Input3" },
  	{ "Capture", NULL, "Input4" },
  	{ "Capture", NULL, "Input5" },
  	{ "Capture", NULL, "Input6" },
  	{ "Capture", NULL, "Input7" },
  	{ "Capture", NULL, "Input8" },
  };
  
  static struct snd_soc_dai_driver ads117x_dai = {
  /* ADC */
  	.name = "ads117x-hifi",
  	.capture = {
  		.stream_name = "Capture",
  		.channels_min = 1,
  		.channels_max = 32,
  		.rates = ADS117X_RATES,
  		.formats = ADS117X_FORMATS,},
  };
  
  static const struct snd_soc_codec_driver soc_codec_dev_ads117x = {
  	.component_driver = {
  		.dapm_widgets		= ads117x_dapm_widgets,
  		.num_dapm_widgets	= ARRAY_SIZE(ads117x_dapm_widgets),
  		.dapm_routes		= ads117x_dapm_routes,
  		.num_dapm_routes	= ARRAY_SIZE(ads117x_dapm_routes),
  	},
  };
  
  static int ads117x_probe(struct platform_device *pdev)
  {
  	return snd_soc_register_codec(&pdev->dev,
  			&soc_codec_dev_ads117x, &ads117x_dai, 1);
  }
  
  static int ads117x_remove(struct platform_device *pdev)
  {
  	snd_soc_unregister_codec(&pdev->dev);
  	return 0;
  }
  
  #if defined(CONFIG_OF)
  static const struct of_device_id ads117x_dt_ids[] = {
  	{ .compatible = "ti,ads1174" },
  	{ .compatible = "ti,ads1178" },
  	{ },
  };
  MODULE_DEVICE_TABLE(of, ads117x_dt_ids);
  #endif
  
  static struct platform_driver ads117x_codec_driver = {
  	.driver = {
  			.name = "ads117x-codec",
  			.of_match_table = of_match_ptr(ads117x_dt_ids),
  	},
  
  	.probe = ads117x_probe,
  	.remove = ads117x_remove,
  };
  
  module_platform_driver(ads117x_codec_driver);
  
  MODULE_DESCRIPTION("ASoC ads117x driver");
  MODULE_AUTHOR("Graeme Gregory");
  MODULE_LICENSE("GPL");
  