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-rw-r--r--sound/soc/codecs/dmic.c81
1 files changed, 81 insertions, 0 deletions
diff --git a/sound/soc/codecs/dmic.c b/sound/soc/codecs/dmic.c
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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
29static 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
42static struct snd_soc_codec_driver soc_dmic = {};
43
44static 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
50static int __devexit dmic_dev_remove(struct platform_device *pdev)
51{
52 snd_soc_unregister_codec(&pdev->dev);
53 return 0;
54}
55
56MODULE_ALIAS("platform:dmic-codec");
57
58static 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
67static int __init dmic_init(void)
68{
69 return platform_driver_register(&dmic_driver);
70}
71module_init(dmic_init);
72
73static void __exit dmic_exit(void)
74{
75 platform_driver_unregister(&dmic_driver);
76}
77module_exit(dmic_exit);
78
79MODULE_DESCRIPTION("Generic DMIC driver");
80MODULE_AUTHOR("Liam Girdwood <lrg@slimlogic.co.uk>");
81MODULE_LICENSE("GPL");