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David Lamberta7107702011-01-06 08:00:37 -06001/*
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>
Paul Gortmakerda155d52011-07-15 12:38:28 -040024#include <linux/module.h>
David Lamberta7107702011-01-06 08:00:37 -060025#include <sound/core.h>
26#include <sound/pcm.h>
27#include <sound/soc.h>
28#include <sound/soc-dapm.h>
29
30static struct snd_soc_dai_driver dmic_dai = {
31 .name = "dmic-hifi",
32 .capture = {
33 .stream_name = "Capture",
34 .channels_min = 1,
35 .channels_max = 8,
36 .rates = SNDRV_PCM_RATE_CONTINUOUS,
37 .formats = SNDRV_PCM_FMTBIT_S32_LE
38 | SNDRV_PCM_FMTBIT_S24_LE
39 | SNDRV_PCM_FMTBIT_S16_LE,
40 },
41};
42
Misael Lopez Cruzd5e4b0a2011-05-12 16:26:20 +010043static const struct snd_soc_dapm_widget dmic_dapm_widgets[] = {
44 SND_SOC_DAPM_AIF_OUT("DMIC AIF", "Capture", 0,
45 SND_SOC_NOPM, 0, 0),
46 SND_SOC_DAPM_INPUT("DMic"),
47};
48
49static const struct snd_soc_dapm_route intercon[] = {
50 {"DMIC AIF", NULL, "DMic"},
51};
52
Misael Lopez Cruzd5e4b0a2011-05-12 16:26:20 +010053static struct snd_soc_codec_driver soc_dmic = {
Lars-Peter Clausena85f9da2013-08-27 15:50:55 +020054 .dapm_widgets = dmic_dapm_widgets,
55 .num_dapm_widgets = ARRAY_SIZE(dmic_dapm_widgets),
56 .dapm_routes = intercon,
57 .num_dapm_routes = ARRAY_SIZE(intercon),
Misael Lopez Cruzd5e4b0a2011-05-12 16:26:20 +010058};
David Lamberta7107702011-01-06 08:00:37 -060059
Bill Pemberton7a79e942012-12-07 09:26:37 -050060static int dmic_dev_probe(struct platform_device *pdev)
David Lamberta7107702011-01-06 08:00:37 -060061{
62 return snd_soc_register_codec(&pdev->dev,
63 &soc_dmic, &dmic_dai, 1);
64}
65
Bill Pemberton7a79e942012-12-07 09:26:37 -050066static int dmic_dev_remove(struct platform_device *pdev)
David Lamberta7107702011-01-06 08:00:37 -060067{
68 snd_soc_unregister_codec(&pdev->dev);
69 return 0;
70}
71
72MODULE_ALIAS("platform:dmic-codec");
73
74static struct platform_driver dmic_driver = {
75 .driver = {
76 .name = "dmic-codec",
77 .owner = THIS_MODULE,
78 },
79 .probe = dmic_dev_probe,
Bill Pemberton7a79e942012-12-07 09:26:37 -050080 .remove = dmic_dev_remove,
David Lamberta7107702011-01-06 08:00:37 -060081};
82
Mark Brown5bbcc3c2011-11-23 22:52:08 +000083module_platform_driver(dmic_driver);
David Lamberta7107702011-01-06 08:00:37 -060084
85MODULE_DESCRIPTION("Generic DMIC driver");
86MODULE_AUTHOR("Liam Girdwood <lrg@slimlogic.co.uk>");
87MODULE_LICENSE("GPL");