LXR linux/sound/soc/codecs/wm8782.c

   1/*
   2 * sound/soc/codecs/wm8782.c
   3 * simple, strap-pin configured 24bit 2ch ADC
   4 *
   5 * Copyright: 2011 Raumfeld GmbH
   6 * Author: Johannes Stezenbach <js@sig21.net>
   7 *
   8 * based on ad73311.c
   9 * Copyright:   Analog Device Inc.
  10 * Author:      Cliff Cai <cliff.cai@analog.com>
  11 *
  12 * This program is free software; you can redistribute  it and/or modify it
  13 * under  the terms of  the GNU General  Public License as published by the
  14 * Free Software Foundation;  either version 2 of the  License, or (at your
  15 * option) any later version.
  16 */
  17
  18#include <linux/init.h>
  19#include <linux/slab.h>
  20#include <linux/module.h>
  21#include <linux/kernel.h>
  22#include <linux/device.h>
  23#include <sound/core.h>
  24#include <sound/pcm.h>
  25#include <sound/ac97_codec.h>
  26#include <sound/initval.h>
  27#include <sound/soc.h>
  28
  29static const struct snd_soc_dapm_widget wm8782_dapm_widgets[] = {
  30SND_SOC_DAPM_INPUT("AINL"),
  31SND_SOC_DAPM_INPUT("AINR"),
  32};
  33
  34static const struct snd_soc_dapm_route wm8782_dapm_routes[] = {
  35        { "Capture", NULL, "AINL" },
  36        { "Capture", NULL, "AINR" },
  37};
  38
  39static struct snd_soc_dai_driver wm8782_dai = {
  40        .name = "wm8782",
  41        .capture = {
  42                .stream_name = "Capture",
  43                .channels_min = 2,
  44                .channels_max = 2,
  45                /* For configurations with FSAMPEN=0 */
  46                .rates = SNDRV_PCM_RATE_8000_48000,
  47                .formats = SNDRV_PCM_FMTBIT_S16_LE |
  48                           SNDRV_PCM_FMTBIT_S20_3LE |
  49                           SNDRV_PCM_FMTBIT_S24_LE,
  50        },
  51};
  52
  53static struct snd_soc_codec_driver soc_codec_dev_wm8782 = {
  54        .dapm_widgets = wm8782_dapm_widgets,
  55        .num_dapm_widgets = ARRAY_SIZE(wm8782_dapm_widgets),
  56        .dapm_routes = wm8782_dapm_routes,
  57        .num_dapm_routes = ARRAY_SIZE(wm8782_dapm_routes),
  58};
  59
  60static int wm8782_probe(struct platform_device *pdev)
  61{
  62        return snd_soc_register_codec(&pdev->dev,
  63                        &soc_codec_dev_wm8782, &wm8782_dai, 1);
  64}
  65
  66static int wm8782_remove(struct platform_device *pdev)
  67{
  68        snd_soc_unregister_codec(&pdev->dev);
  69        return 0;
  70}
  71
  72static struct platform_driver wm8782_codec_driver = {
  73        .driver = {
  74                .name = "wm8782",
  75        },
  76        .probe = wm8782_probe,
  77        .remove = wm8782_remove,
  78};
  79
  80module_platform_driver(wm8782_codec_driver);
  81
  82MODULE_DESCRIPTION("ASoC WM8782 driver");
  83MODULE_AUTHOR("Johannes Stezenbach <js@sig21.net>");
  84MODULE_LICENSE("GPL");
  85