blob: 8f388edff5864632bf1eb9f8382bdeedf4267486 [file] [log] [blame]
Graeme Gregory2dcf9fb2009-11-04 17:49:22 +00001/*
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>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090014#include <linux/slab.h>
Graeme Gregory2dcf9fb2009-11-04 17:49:22 +000015#include <linux/init.h>
16#include <linux/device.h>
Paul Gortmakerda155d52011-07-15 12:38:28 -040017#include <linux/module.h>
Graeme Gregory2dcf9fb2009-11-04 17:49:22 +000018#include <sound/core.h>
19#include <sound/pcm.h>
20#include <sound/initval.h>
21#include <sound/soc.h>
22
Graeme Gregory2dcf9fb2009-11-04 17:49:22 +000023#define ADS117X_RATES (SNDRV_PCM_RATE_8000_48000)
Graeme Gregory2dcf9fb2009-11-04 17:49:22 +000024#define ADS117X_FORMATS (SNDRV_PCM_FMTBIT_S16_LE)
25
Mark Brown45a14a82013-08-07 18:24:09 +010026static 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
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +000048static struct snd_soc_dai_driver ads117x_dai = {
Graeme Gregory2dcf9fb2009-11-04 17:49:22 +000049/* ADC */
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +000050 .name = "ads117x-hifi",
Graeme Gregory2dcf9fb2009-11-04 17:49:22 +000051 .capture = {
52 .stream_name = "Capture",
53 .channels_min = 1,
54 .channels_max = 32,
55 .rates = ADS117X_RATES,
56 .formats = ADS117X_FORMATS,},
57};
Graeme Gregory2dcf9fb2009-11-04 17:49:22 +000058
Mark Brown45a14a82013-08-07 18:24:09 +010059static 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};
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +000065
Bill Pemberton7a79e942012-12-07 09:26:37 -050066static int ads117x_probe(struct platform_device *pdev)
Graeme Gregory2dcf9fb2009-11-04 17:49:22 +000067{
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +000068 return snd_soc_register_codec(&pdev->dev,
69 &soc_codec_dev_ads117x, &ads117x_dai, 1);
Graeme Gregory2dcf9fb2009-11-04 17:49:22 +000070}
71
Bill Pemberton7a79e942012-12-07 09:26:37 -050072static int ads117x_remove(struct platform_device *pdev)
Graeme Gregory2dcf9fb2009-11-04 17:49:22 +000073{
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +000074 snd_soc_unregister_codec(&pdev->dev);
Mark Brownf3d0e822009-11-04 21:43:27 +000075 return 0;
76}
77
78static struct platform_driver ads117x_codec_driver = {
79 .driver = {
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +000080 .name = "ads117x-codec",
Mark Brownf3d0e822009-11-04 21:43:27 +000081 .owner = THIS_MODULE,
82 },
83
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +000084 .probe = ads117x_probe,
Bill Pemberton7a79e942012-12-07 09:26:37 -050085 .remove = ads117x_remove,
Mark Brownf3d0e822009-11-04 21:43:27 +000086};
87
Mark Brown5bbcc3c2011-11-23 22:52:08 +000088module_platform_driver(ads117x_codec_driver);
Graeme Gregory2dcf9fb2009-11-04 17:49:22 +000089
90MODULE_DESCRIPTION("ASoC ads117x driver");
91MODULE_AUTHOR("Graeme Gregory");
92MODULE_LICENSE("GPL");