LXR linux/sound/soc/blackfin/bfin-eval-adau1701.c

   1/*
   2 * Machine driver for EVAL-ADAU1701MINIZ on Analog Devices bfin
   3 * evaluation boards.
   4 *
   5 * Copyright 2011 Analog Devices Inc.
   6 * Author: Lars-Peter Clausen <lars@metafoo.de>
   7 *
   8 * Licensed under the GPL-2 or later.
   9 */
  10
  11#include <linux/module.h>
  12#include <linux/device.h>
  13#include <sound/core.h>
  14#include <sound/pcm.h>
  15#include <sound/soc.h>
  16#include <sound/pcm_params.h>
  17
  18#include "../codecs/adau1701.h"
  19
  20static const struct snd_soc_dapm_widget bfin_eval_adau1701_dapm_widgets[] = {
  21        SND_SOC_DAPM_SPK("Speaker", NULL),
  22        SND_SOC_DAPM_LINE("Line Out", NULL),
  23        SND_SOC_DAPM_LINE("Line In", NULL),
  24};
  25
  26static const struct snd_soc_dapm_route bfin_eval_adau1701_dapm_routes[] = {
  27        { "Speaker", NULL, "OUT0" },
  28        { "Speaker", NULL, "OUT1" },
  29        { "Line Out", NULL, "OUT2" },
  30        { "Line Out", NULL, "OUT3" },
  31
  32        { "IN0", NULL, "Line In" },
  33        { "IN1", NULL, "Line In" },
  34};
  35
  36static int bfin_eval_adau1701_hw_params(struct snd_pcm_substream *substream,
  37        struct snd_pcm_hw_params *params)
  38{
  39        struct snd_soc_pcm_runtime *rtd = substream->private_data;
  40        struct snd_soc_dai *codec_dai = rtd->codec_dai;
  41        int ret;
  42
  43        ret = snd_soc_dai_set_sysclk(codec_dai, ADAU1701_CLK_SRC_OSC, 12288000,
  44                        SND_SOC_CLOCK_IN);
  45
  46        return ret;
  47}
  48
  49static struct snd_soc_ops bfin_eval_adau1701_ops = {
  50        .hw_params = bfin_eval_adau1701_hw_params,
  51};
  52
  53#define BFIN_EVAL_ADAU1701_DAI_FMT (SND_SOC_DAIFMT_I2S | \
  54                                SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM)
  55
  56static struct snd_soc_dai_link bfin_eval_adau1701_dai[] = {
  57        {
  58                .name = "adau1701",
  59                .stream_name = "adau1701",
  60                .cpu_dai_name = "bfin-i2s.0",
  61                .codec_dai_name = "adau1701",
  62                .platform_name = "bfin-i2s-pcm-audio",
  63                .codec_name = "adau1701.0-0034",
  64                .ops = &bfin_eval_adau1701_ops,
  65                .dai_fmt = BFIN_EVAL_ADAU1701_DAI_FMT,
  66        },
  67        {
  68                .name = "adau1701",
  69                .stream_name = "adau1701",
  70                .cpu_dai_name = "bfin-i2s.1",
  71                .codec_dai_name = "adau1701",
  72                .platform_name = "bfin-i2s-pcm-audio",
  73                .codec_name = "adau1701.0-0034",
  74                .ops = &bfin_eval_adau1701_ops,
  75                .dai_fmt = BFIN_EVAL_ADAU1701_DAI_FMT,
  76        },
  77};
  78
  79static struct snd_soc_card bfin_eval_adau1701 = {
  80        .name = "bfin-eval-adau1701",
  81        .owner = THIS_MODULE,
  82        .dai_link = &bfin_eval_adau1701_dai[CONFIG_SND_BF5XX_SPORT_NUM],
  83        .num_links = 1,
  84
  85        .dapm_widgets           = bfin_eval_adau1701_dapm_widgets,
  86        .num_dapm_widgets       = ARRAY_SIZE(bfin_eval_adau1701_dapm_widgets),
  87        .dapm_routes            = bfin_eval_adau1701_dapm_routes,
  88        .num_dapm_routes        = ARRAY_SIZE(bfin_eval_adau1701_dapm_routes),
  89};
  90
  91static int bfin_eval_adau1701_probe(struct platform_device *pdev)
  92{
  93        struct snd_soc_card *card = &bfin_eval_adau1701;
  94
  95        card->dev = &pdev->dev;
  96
  97        return snd_soc_register_card(&bfin_eval_adau1701);
  98}
  99
 100static int bfin_eval_adau1701_remove(struct platform_device *pdev)
 101{
 102        struct snd_soc_card *card = platform_get_drvdata(pdev);
 103
 104        snd_soc_unregister_card(card);
 105
 106        return 0;
 107}
 108
 109static struct platform_driver bfin_eval_adau1701_driver = {
 110        .driver = {
 111                .name = "bfin-eval-adau1701",
 112                .pm = &snd_soc_pm_ops,
 113        },
 114        .probe = bfin_eval_adau1701_probe,
 115        .remove = bfin_eval_adau1701_remove,
 116};
 117
 118module_platform_driver(bfin_eval_adau1701_driver);
 119
 120MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
 121MODULE_DESCRIPTION("ALSA SoC bfin ADAU1701 driver");
 122MODULE_LICENSE("GPL");
 123MODULE_ALIAS("platform:bfin-eval-adau1701");
 124