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a710770e DL |
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> | |
da155d5b | 24 | #include <linux/module.h> |
a710770e DL |
25 | #include <sound/core.h> |
26 | #include <sound/pcm.h> | |
27 | #include <sound/soc.h> | |
28 | #include <sound/soc-dapm.h> | |
29 | ||
30 | static 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 | ||
d5e4b0ad MLC |
43 | static 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 | ||
49 | static const struct snd_soc_dapm_route intercon[] = { | |
50 | {"DMIC AIF", NULL, "DMic"}, | |
51 | }; | |
52 | ||
53 | static int dmic_probe(struct snd_soc_codec *codec) | |
54 | { | |
55 | struct snd_soc_dapm_context *dapm = &codec->dapm; | |
56 | ||
57 | snd_soc_dapm_new_controls(dapm, dmic_dapm_widgets, | |
58 | ARRAY_SIZE(dmic_dapm_widgets)); | |
59 | snd_soc_dapm_add_routes(dapm, intercon, ARRAY_SIZE(intercon)); | |
60 | snd_soc_dapm_new_widgets(dapm); | |
61 | ||
62 | return 0; | |
63 | } | |
64 | ||
65 | static struct snd_soc_codec_driver soc_dmic = { | |
66 | .probe = dmic_probe, | |
67 | }; | |
a710770e DL |
68 | |
69 | static int __devinit dmic_dev_probe(struct platform_device *pdev) | |
70 | { | |
71 | return snd_soc_register_codec(&pdev->dev, | |
72 | &soc_dmic, &dmic_dai, 1); | |
73 | } | |
74 | ||
75 | static int __devexit dmic_dev_remove(struct platform_device *pdev) | |
76 | { | |
77 | snd_soc_unregister_codec(&pdev->dev); | |
78 | return 0; | |
79 | } | |
80 | ||
81 | MODULE_ALIAS("platform:dmic-codec"); | |
82 | ||
83 | static struct platform_driver dmic_driver = { | |
84 | .driver = { | |
85 | .name = "dmic-codec", | |
86 | .owner = THIS_MODULE, | |
87 | }, | |
88 | .probe = dmic_dev_probe, | |
89 | .remove = __devexit_p(dmic_dev_remove), | |
90 | }; | |
91 | ||
5bbcc3c0 | 92 | module_platform_driver(dmic_driver); |
a710770e DL |
93 | |
94 | MODULE_DESCRIPTION("Generic DMIC driver"); | |
95 | MODULE_AUTHOR("Liam Girdwood <lrg@slimlogic.co.uk>"); | |
96 | MODULE_LICENSE("GPL"); |