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Linux/sound/soc/codecs/bt-sco.c

  1 /*
  2  * Driver for generic Bluetooth SCO link
  3  * Copyright 2011 Lars-Peter Clausen <lars@metafoo.de>
  4  *
  5  *  This program is free software; you can redistribute  it and/or modify it
  6  *  under  the terms of  the GNU General  Public License as published by the
  7  *  Free Software Foundation;  either version 2 of the  License, or (at your
  8  *  option) any later version.
  9  *
 10  */
 11 
 12 #include <linux/init.h>
 13 #include <linux/module.h>
 14 #include <linux/platform_device.h>
 15 
 16 #include <sound/soc.h>
 17 
 18 static const struct snd_soc_dapm_widget bt_sco_widgets[] = {
 19         SND_SOC_DAPM_INPUT("RX"),
 20         SND_SOC_DAPM_OUTPUT("TX"),
 21 };
 22 
 23 static const struct snd_soc_dapm_route bt_sco_routes[] = {
 24         { "Capture", NULL, "RX" },
 25         { "TX", NULL, "Playback" },
 26 };
 27 
 28 static struct snd_soc_dai_driver bt_sco_dai[] = {
 29         {
 30                 .name = "bt-sco-pcm",
 31                 .playback = {
 32                         .stream_name = "Playback",
 33                         .channels_min = 1,
 34                         .channels_max = 1,
 35                         .rates = SNDRV_PCM_RATE_8000,
 36                         .formats = SNDRV_PCM_FMTBIT_S16_LE,
 37                 },
 38                 .capture = {
 39                          .stream_name = "Capture",
 40                         .channels_min = 1,
 41                         .channels_max = 1,
 42                         .rates = SNDRV_PCM_RATE_8000,
 43                         .formats = SNDRV_PCM_FMTBIT_S16_LE,
 44                 },
 45         },
 46         {
 47                 .name = "bt-sco-pcm-wb",
 48                 .playback = {
 49                         .stream_name = "Playback",
 50                         .channels_min = 1,
 51                         .channels_max = 1,
 52                         .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000,
 53                         .formats = SNDRV_PCM_FMTBIT_S16_LE,
 54                 },
 55                 .capture = {
 56                          .stream_name = "Capture",
 57                         .channels_min = 1,
 58                         .channels_max = 1,
 59                         .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000,
 60                         .formats = SNDRV_PCM_FMTBIT_S16_LE,
 61                 },
 62         }
 63 };
 64 
 65 static struct snd_soc_codec_driver soc_codec_dev_bt_sco = {
 66         .dapm_widgets = bt_sco_widgets,
 67         .num_dapm_widgets = ARRAY_SIZE(bt_sco_widgets),
 68         .dapm_routes = bt_sco_routes,
 69         .num_dapm_routes = ARRAY_SIZE(bt_sco_routes),
 70 };
 71 
 72 static int bt_sco_probe(struct platform_device *pdev)
 73 {
 74         return snd_soc_register_codec(&pdev->dev, &soc_codec_dev_bt_sco,
 75                                       bt_sco_dai, ARRAY_SIZE(bt_sco_dai));
 76 }
 77 
 78 static int bt_sco_remove(struct platform_device *pdev)
 79 {
 80         snd_soc_unregister_codec(&pdev->dev);
 81 
 82         return 0;
 83 }
 84 
 85 static const struct platform_device_id bt_sco_driver_ids[] = {
 86         {
 87                 .name           = "dfbmcs320",
 88         },
 89         {
 90                 .name           = "bt-sco",
 91         },
 92         {},
 93 };
 94 MODULE_DEVICE_TABLE(platform, bt_sco_driver_ids);
 95 
 96 #if defined(CONFIG_OF)
 97 static const struct of_device_id bt_sco_codec_of_match[] = {
 98         { .compatible = "delta,dfbmcs320", },
 99         { .compatible = "linux,bt-sco", },
100         {},
101 };
102 MODULE_DEVICE_TABLE(of, bt_sco_codec_of_match);
103 #endif
104 
105 static struct platform_driver bt_sco_driver = {
106         .driver = {
107                 .name = "bt-sco",
108                 .of_match_table = of_match_ptr(bt_sco_codec_of_match),
109         },
110         .probe = bt_sco_probe,
111         .remove = bt_sco_remove,
112         .id_table = bt_sco_driver_ids,
113 };
114 
115 module_platform_driver(bt_sco_driver);
116 
117 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
118 MODULE_DESCRIPTION("ASoC generic bluetooth sco link driver");
119 MODULE_LICENSE("GPL");
120 

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