1/*
2 * ads117x.c  --  Driver for ads1174/8 ADC chips
3 *
4 * Copyright 2009 ShotSpotter Inc.
5 * Author: Graeme Gregory <gg@slimlogic.co.uk>
6 *
7 *  This program is free software; you can redistribute  it and/or modify it
8 *  under  the terms of  the GNU General  Public License as published by the
9 *  Free Software Foundation;  either version 2 of the  License, or (at your
10 *  option) any later version.
11 */
12
13#include <linux/kernel.h>
14#include <linux/slab.h>
15#include <linux/init.h>
16#include <linux/device.h>
17#include <linux/module.h>
18#include <sound/core.h>
19#include <sound/pcm.h>
20#include <sound/initval.h>
21#include <sound/soc.h>
22
23#define ADS117X_RATES (SNDRV_PCM_RATE_8000_48000)
24#define ADS117X_FORMATS (SNDRV_PCM_FMTBIT_S16_LE)
25
26static const struct snd_soc_dapm_widget ads117x_dapm_widgets[] = {
27SND_SOC_DAPM_INPUT("Input1"),
28SND_SOC_DAPM_INPUT("Input2"),
29SND_SOC_DAPM_INPUT("Input3"),
30SND_SOC_DAPM_INPUT("Input4"),
31SND_SOC_DAPM_INPUT("Input5"),
32SND_SOC_DAPM_INPUT("Input6"),
33SND_SOC_DAPM_INPUT("Input7"),
34SND_SOC_DAPM_INPUT("Input8"),
35};
36
37static const struct snd_soc_dapm_route ads117x_dapm_routes[] = {
38	{ "Capture", NULL, "Input1" },
39	{ "Capture", NULL, "Input2" },
40	{ "Capture", NULL, "Input3" },
41	{ "Capture", NULL, "Input4" },
42	{ "Capture", NULL, "Input5" },
43	{ "Capture", NULL, "Input6" },
44	{ "Capture", NULL, "Input7" },
45	{ "Capture", NULL, "Input8" },
46};
47
48static struct snd_soc_dai_driver ads117x_dai = {
49/* ADC */
50	.name = "ads117x-hifi",
51	.capture = {
52		.stream_name = "Capture",
53		.channels_min = 1,
54		.channels_max = 32,
55		.rates = ADS117X_RATES,
56		.formats = ADS117X_FORMATS,},
57};
58
59static struct snd_soc_codec_driver soc_codec_dev_ads117x = {
60	.dapm_widgets = ads117x_dapm_widgets,
61	.num_dapm_widgets = ARRAY_SIZE(ads117x_dapm_widgets),
62	.dapm_routes = ads117x_dapm_routes,
63	.num_dapm_routes = ARRAY_SIZE(ads117x_dapm_routes),
64};
65
66static int ads117x_probe(struct platform_device *pdev)
67{
68	return snd_soc_register_codec(&pdev->dev,
69			&soc_codec_dev_ads117x, &ads117x_dai, 1);
70}
71
72static int ads117x_remove(struct platform_device *pdev)
73{
74	snd_soc_unregister_codec(&pdev->dev);
75	return 0;
76}
77
78static struct platform_driver ads117x_codec_driver = {
79	.driver = {
80			.name = "ads117x-codec",
81	},
82
83	.probe = ads117x_probe,
84	.remove = ads117x_remove,
85};
86
87module_platform_driver(ads117x_codec_driver);
88
89MODULE_DESCRIPTION("ASoC ads117x driver");
90MODULE_AUTHOR("Graeme Gregory");
91MODULE_LICENSE("GPL");
92