sound/soc/codecs/dmic.c

   1 /*
   2  * dmic.c  --  SoC audio for Generic Digital MICs
   3  *
   4  * Author: Liam Girdwood <lrg@slimlogic.co.uk>
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * version 2 as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  18  * 02110-1301 USA
  19  *
  20  */
  21
  22 #include <linux/platform_device.h>
  23 #include <linux/slab.h>
  24 #include <sound/core.h>
  25 #include <sound/pcm.h>
  26 #include <sound/soc.h>
  27 #include <sound/soc-dapm.h>
  28
  29 static struct snd_soc_dai_driver dmic_dai = {
  30         .name = "dmic-hifi",
  31         .capture = {
  32                 .stream_name = "Capture",
  33                 .channels_min = 1,
  34                 .channels_max = 8,
  35                 .rates = SNDRV_PCM_RATE_CONTINUOUS,
  36                 .formats = SNDRV_PCM_FMTBIT_S32_LE
  37                         | SNDRV_PCM_FMTBIT_S24_LE
  38                         | SNDRV_PCM_FMTBIT_S16_LE,
  39         },
  40 };
  41
  42 static struct snd_soc_codec_driver soc_dmic = {};
  43
  44 static int __devinit dmic_dev_probe(struct platform_device *pdev)
  45 {
  46         return snd_soc_register_codec(&pdev->dev,
  47                         &soc_dmic, &dmic_dai, 1);
  48 }
  49
  50 static int __devexit dmic_dev_remove(struct platform_device *pdev)
  51 {
  52         snd_soc_unregister_codec(&pdev->dev);
  53         return 0;
  54 }
  55
  56 MODULE_ALIAS("platform:dmic-codec");
  57
  58 static struct platform_driver dmic_driver = {
  59         .driver = {
  60                 .name = "dmic-codec",
  61                 .owner = THIS_MODULE,
  62         },
  63         .probe = dmic_dev_probe,
  64         .remove = __devexit_p(dmic_dev_remove),
  65 };
  66
  67 static int __init dmic_init(void)
  68 {
  69         return platform_driver_register(&dmic_driver);
  70 }
  71 module_init(dmic_init);
  72
  73 static void __exit dmic_exit(void)
  74 {
  75         platform_driver_unregister(&dmic_driver);
  76 }
  77 module_exit(dmic_exit);
  78
  79 MODULE_DESCRIPTION("Generic DMIC driver");
  80 MODULE_AUTHOR("Liam Girdwood <lrg@slimlogic.co.uk>");
  81 MODULE_LICENSE("GPL");