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 *cpu_dai = rtd->cpu_dai;
  41         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  42         int ret;
  43
  44         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
  45                         SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
  46         if (ret)
  47                 return ret;
  48
  49         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
  50                         SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
  51         if (ret)
  52                 return ret;
  53
  54         ret = snd_soc_dai_set_sysclk(codec_dai, ADAU1701_CLK_SRC_OSC, 12288000,
  55                         SND_SOC_CLOCK_IN);
  56
  57         return ret;
  58 }
  59
  60 static struct snd_soc_ops bfin_eval_adau1701_ops = {
  61         .hw_params = bfin_eval_adau1701_hw_params,
  62 };
  63
  64 static struct snd_soc_dai_link bfin_eval_adau1701_dai[] = {
  65         {
  66                 .name = "adau1701",
  67                 .stream_name = "adau1701",
  68                 .cpu_dai_name = "bfin-i2s.0",
  69                 .codec_dai_name = "adau1701",
  70                 .platform_name = "bfin-i2s-pcm-audio",
  71                 .codec_name = "adau1701.0-0034",
  72                 .ops = &bfin_eval_adau1701_ops,
  73         },
  74         {
  75                 .name = "adau1701",
  76                 .stream_name = "adau1701",
  77                 .cpu_dai_name = "bfin-i2s.1",
  78                 .codec_dai_name = "adau1701",
  79                 .platform_name = "bfin-i2s-pcm-audio",
  80                 .codec_name = "adau1701.0-0034",
  81                 .ops = &bfin_eval_adau1701_ops,
  82         },
  83 };
  84
  85 static struct snd_soc_card bfin_eval_adau1701 = {
  86         .name = "bfin-eval-adau1701",
  87         .dai_link = &bfin_eval_adau1701_dai[CONFIG_SND_BF5XX_SPORT_NUM],
  88         .num_links = 1,
  89
  90         .dapm_widgets           = bfin_eval_adau1701_dapm_widgets,
  91         .num_dapm_widgets       = ARRAY_SIZE(bfin_eval_adau1701_dapm_widgets),
  92         .dapm_routes            = bfin_eval_adau1701_dapm_routes,
  93         .num_dapm_routes        = ARRAY_SIZE(bfin_eval_adau1701_dapm_routes),
  94 };
  95
  96 static int bfin_eval_adau1701_probe(struct platform_device *pdev)
  97 {
  98         struct snd_soc_card *card = &bfin_eval_adau1701;
  99
 100         card->dev = &pdev->dev;
 101
 102         return snd_soc_register_card(&bfin_eval_adau1701);
 103 }
 104
 105 static int __devexit bfin_eval_adau1701_remove(struct platform_device *pdev)
 106 {
 107         struct snd_soc_card *card = platform_get_drvdata(pdev);
 108
 109         snd_soc_unregister_card(card);
 110
 111         return 0;
 112 }
 113
 114 static struct platform_driver bfin_eval_adau1701_driver = {
 115         .driver = {
 116                 .name = "bfin-eval-adau1701",
 117                 .owner = THIS_MODULE,
 118                 .pm = &snd_soc_pm_ops,
 119         },
 120         .probe = bfin_eval_adau1701_probe,
 121         .remove = __devexit_p(bfin_eval_adau1701_remove),
 122 };
 123
 124 static int __init bfin_eval_adau1701_init(void)
 125 {
 126         return platform_driver_register(&bfin_eval_adau1701_driver);
 127 }
 128 module_init(bfin_eval_adau1701_init);
 129
 130 static void __exit bfin_eval_adau1701_exit(void)
 131 {
 132         platform_driver_unregister(&bfin_eval_adau1701_driver);
 133 }
 134 module_exit(bfin_eval_adau1701_exit);
 135
 136 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
 137 MODULE_DESCRIPTION("ALSA SoC bfin ADAU1701 driver");
 138 MODULE_LICENSE("GPL");
 139 MODULE_ALIAS("platform:bfin-eval-adau1701");