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

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  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         .name = "bt-sco-pcm",
 30         .playback = {
 31                 .stream_name = "Playback",
 32                 .channels_min = 1,
 33                 .channels_max = 1,
 34                 .rates = SNDRV_PCM_RATE_8000,
 35                 .formats = SNDRV_PCM_FMTBIT_S16_LE,
 36         },
 37         .capture = {
 38                  .stream_name = "Capture",
 39                 .channels_min = 1,
 40                 .channels_max = 1,
 41                 .rates = SNDRV_PCM_RATE_8000,
 42                 .formats = SNDRV_PCM_FMTBIT_S16_LE,
 43         },
 44 };
 45 
 46 static struct snd_soc_codec_driver soc_codec_dev_bt_sco = {
 47         .dapm_widgets = bt_sco_widgets,
 48         .num_dapm_widgets = ARRAY_SIZE(bt_sco_widgets),
 49         .dapm_routes = bt_sco_routes,
 50         .num_dapm_routes = ARRAY_SIZE(bt_sco_routes),
 51 };
 52 
 53 static int bt_sco_probe(struct platform_device *pdev)
 54 {
 55         return snd_soc_register_codec(&pdev->dev, &soc_codec_dev_bt_sco,
 56                         &bt_sco_dai, 1);
 57 }
 58 
 59 static int bt_sco_remove(struct platform_device *pdev)
 60 {
 61         snd_soc_unregister_codec(&pdev->dev);
 62 
 63         return 0;
 64 }
 65 
 66 static const struct platform_device_id bt_sco_driver_ids[] = {
 67         {
 68                 .name           = "dfbmcs320",
 69         },
 70         {
 71                 .name           = "bt-sco",
 72         },
 73         {},
 74 };
 75 MODULE_DEVICE_TABLE(platform, bt_sco_driver_ids);
 76 
 77 #if defined(CONFIG_OF)
 78 static const struct of_device_id bt_sco_codec_of_match[] = {
 79         { .compatible = "delta,dfbmcs320", },
 80         {},
 81 };
 82 MODULE_DEVICE_TABLE(of, bt_sco_codec_of_match);
 83 #endif
 84 
 85 static struct platform_driver bt_sco_driver = {
 86         .driver = {
 87                 .name = "bt-sco",
 88                 .of_match_table = of_match_ptr(bt_sco_codec_of_match),
 89         },
 90         .probe = bt_sco_probe,
 91         .remove = bt_sco_remove,
 92         .id_table = bt_sco_driver_ids,
 93 };
 94 
 95 module_platform_driver(bt_sco_driver);
 96 
 97 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
 98 MODULE_DESCRIPTION("ASoC generic bluetooth sco link driver");
 99 MODULE_LICENSE("GPL");
100 

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