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
  20 static 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
  26 static 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
  36 static 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
  49 static 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
  56 static 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
  79 static 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
  91 static 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
 100 static 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
 109 static 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
 118 module_platform_driver(bfin_eval_adau1701_driver);
 119
 120 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
 121 MODULE_DESCRIPTION("ALSA SoC bfin ADAU1701 driver");
 122 MODULE_LICENSE("GPL");
 123 MODULE_ALIAS("platform:bfin-eval-adau1701");