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 <linux/module.h>
25#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
43static 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
53static struct snd_soc_codec_driver soc_dmic = {
54	.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),
58};
59
60static int dmic_dev_probe(struct platform_device *pdev)
61{
62	return snd_soc_register_codec(&pdev->dev,
63			&soc_dmic, &dmic_dai, 1);
64}
65
66static int dmic_dev_remove(struct platform_device *pdev)
67{
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	},
78	.probe = dmic_dev_probe,
79	.remove = dmic_dev_remove,
80};
81
82module_platform_driver(dmic_driver);
83
84MODULE_DESCRIPTION("Generic DMIC driver");
85MODULE_AUTHOR("Liam Girdwood <lrg@slimlogic.co.uk>");
86MODULE_LICENSE("GPL");
87