LXR linux/sound/soc/codecs/gtm601.c

   1/*
   2 * This is a simple driver for the GTM601 Voice PCM interface
   3 *
   4 * Copyright (C) 2015 Goldelico GmbH
   5 *
   6 * Author: Marek Belisko <marek@goldelico.com>
   7 *
   8 * Based on wm8727.c driver
   9 *
  10 * This program is free software; you can redistribute it and/or modify
  11 * it under the terms of the GNU General Public License version 2 as
  12 * published by the Free Software Foundation.
  13 */
  14
  15#include <linux/init.h>
  16#include <linux/slab.h>
  17#include <linux/module.h>
  18#include <linux/kernel.h>
  19#include <linux/device.h>
  20#include <sound/core.h>
  21#include <sound/pcm.h>
  22#include <sound/ac97_codec.h>
  23#include <sound/initval.h>
  24#include <sound/soc.h>
  25
  26static const struct snd_soc_dapm_widget gtm601_dapm_widgets[] = {
  27        SND_SOC_DAPM_OUTPUT("AOUT"),
  28        SND_SOC_DAPM_INPUT("AIN"),
  29};
  30
  31static const struct snd_soc_dapm_route gtm601_dapm_routes[] = {
  32        { "AOUT", NULL, "Playback" },
  33        { "Capture", NULL, "AIN" },
  34};
  35
  36static struct snd_soc_dai_driver gtm601_dai = {
  37        .name = "gtm601",
  38        .playback = {
  39                .stream_name = "Playback",
  40                .channels_min = 1,
  41                .channels_max = 1,
  42                .rates = SNDRV_PCM_RATE_8000,
  43                .formats = SNDRV_PCM_FMTBIT_S16_LE,
  44                },
  45        .capture = {
  46                .stream_name = "Capture",
  47                .channels_min = 1,
  48                .channels_max = 1,
  49                .rates = SNDRV_PCM_RATE_8000,
  50                .formats = SNDRV_PCM_FMTBIT_S16_LE,
  51        },
  52};
  53
  54static const struct snd_soc_codec_driver soc_codec_dev_gtm601 = {
  55        .component_driver = {
  56                .dapm_widgets           = gtm601_dapm_widgets,
  57                .num_dapm_widgets       = ARRAY_SIZE(gtm601_dapm_widgets),
  58                .dapm_routes            = gtm601_dapm_routes,
  59                .num_dapm_routes        = ARRAY_SIZE(gtm601_dapm_routes),
  60        },
  61};
  62
  63static int gtm601_platform_probe(struct platform_device *pdev)
  64{
  65        return snd_soc_register_codec(&pdev->dev,
  66                        &soc_codec_dev_gtm601, &gtm601_dai, 1);
  67}
  68
  69static int gtm601_platform_remove(struct platform_device *pdev)
  70{
  71        snd_soc_unregister_codec(&pdev->dev);
  72        return 0;
  73}
  74
  75#if defined(CONFIG_OF)
  76static const struct of_device_id gtm601_codec_of_match[] = {
  77        { .compatible = "option,gtm601", },
  78        {},
  79};
  80MODULE_DEVICE_TABLE(of, gtm601_codec_of_match);
  81#endif
  82
  83static struct platform_driver gtm601_codec_driver = {
  84        .driver = {
  85                .name = "gtm601",
  86                .of_match_table = of_match_ptr(gtm601_codec_of_match),
  87        },
  88        .probe = gtm601_platform_probe,
  89        .remove = gtm601_platform_remove,
  90};
  91
  92module_platform_driver(gtm601_codec_driver);
  93
  94MODULE_DESCRIPTION("ASoC gtm601 driver");
  95MODULE_AUTHOR("Marek Belisko <marek@goldelico.com>");
  96MODULE_LICENSE("GPL");
  97MODULE_ALIAS("platform:gtm601");
  98