LXR linux/sound/soc/codecs/wm8727.c

   1/*
   2 * wm8727.c
   3 *
   4 *  Created on: 15-Oct-2009
   5 *      Author: neil.jones@imgtec.com
   6 *
   7 * Copyright (C) 2009 Imagination Technologies Ltd.
   8 *
   9 *  This program is free software; you can redistribute  it and/or modify it
  10 *  under  the terms of  the GNU General  Public License as published by the
  11 *  Free Software Foundation;  either version 2 of the  License, or (at your
  12 *  option) any later version.
  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
  26/*
  27 * Note this is a simple chip with no configuration interface, sample rate is
  28 * determined automatically by examining the Master clock and Bit clock ratios
  29 */
  30#define WM8727_RATES  (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
  31                        SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 |\
  32                        SNDRV_PCM_RATE_192000)
  33
  34
  35static struct snd_soc_dai_driver wm8727_dai = {
  36        .name = "wm8727-hifi",
  37        .playback = {
  38                .stream_name = "Playback",
  39                .channels_min = 2,
  40                .channels_max = 2,
  41                .rates = WM8727_RATES,
  42                .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE,
  43                },
  44};
  45
  46static struct snd_soc_codec_driver soc_codec_dev_wm8727;
  47
  48static int wm8727_probe(struct platform_device *pdev)
  49{
  50        return snd_soc_register_codec(&pdev->dev,
  51                        &soc_codec_dev_wm8727, &wm8727_dai, 1);
  52}
  53
  54static int wm8727_remove(struct platform_device *pdev)
  55{
  56        snd_soc_unregister_codec(&pdev->dev);
  57        return 0;
  58}
  59
  60static struct platform_driver wm8727_codec_driver = {
  61        .driver = {
  62                        .name = "wm8727",
  63                        .owner = THIS_MODULE,
  64        },
  65
  66        .probe = wm8727_probe,
  67        .remove = wm8727_remove,
  68};
  69
  70module_platform_driver(wm8727_codec_driver);
  71
  72MODULE_DESCRIPTION("ASoC wm8727 driver");
  73MODULE_AUTHOR("Neil Jones");
  74MODULE_LICENSE("GPL");
  75