blob: 1d07e2699f04d356e90783195fef0a6abf3fcc22 [file] [log] [blame]
Thomas Gleixner2874c5f2019-05-27 08:55:01 +02001// SPDX-License-Identifier: GPL-2.0-or-later
Graeme Gregory2dcf9fb2009-11-04 17:49:22 +00002/*
3 * ads117x.c -- Driver for ads1174/8 ADC chips
4 *
5 * Copyright 2009 ShotSpotter Inc.
6 * Author: Graeme Gregory <gg@slimlogic.co.uk>
Graeme Gregory2dcf9fb2009-11-04 17:49:22 +00007 */
8
9#include <linux/kernel.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090010#include <linux/slab.h>
Graeme Gregory2dcf9fb2009-11-04 17:49:22 +000011#include <linux/init.h>
12#include <linux/device.h>
Paul Gortmakerda155d52011-07-15 12:38:28 -040013#include <linux/module.h>
Graeme Gregory2dcf9fb2009-11-04 17:49:22 +000014#include <sound/core.h>
15#include <sound/pcm.h>
16#include <sound/initval.h>
17#include <sound/soc.h>
18
Florian Vaussard4f2bf0a2016-02-05 16:32:14 +010019#include <linux/of.h>
20
Graeme Gregory2dcf9fb2009-11-04 17:49:22 +000021#define ADS117X_RATES (SNDRV_PCM_RATE_8000_48000)
Graeme Gregory2dcf9fb2009-11-04 17:49:22 +000022#define ADS117X_FORMATS (SNDRV_PCM_FMTBIT_S16_LE)
23
Mark Brown45a14a82013-08-07 18:24:09 +010024static const struct snd_soc_dapm_widget ads117x_dapm_widgets[] = {
25SND_SOC_DAPM_INPUT("Input1"),
26SND_SOC_DAPM_INPUT("Input2"),
27SND_SOC_DAPM_INPUT("Input3"),
28SND_SOC_DAPM_INPUT("Input4"),
29SND_SOC_DAPM_INPUT("Input5"),
30SND_SOC_DAPM_INPUT("Input6"),
31SND_SOC_DAPM_INPUT("Input7"),
32SND_SOC_DAPM_INPUT("Input8"),
33};
34
35static const struct snd_soc_dapm_route ads117x_dapm_routes[] = {
36 { "Capture", NULL, "Input1" },
37 { "Capture", NULL, "Input2" },
38 { "Capture", NULL, "Input3" },
39 { "Capture", NULL, "Input4" },
40 { "Capture", NULL, "Input5" },
41 { "Capture", NULL, "Input6" },
42 { "Capture", NULL, "Input7" },
43 { "Capture", NULL, "Input8" },
44};
45
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +000046static struct snd_soc_dai_driver ads117x_dai = {
Graeme Gregory2dcf9fb2009-11-04 17:49:22 +000047/* ADC */
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +000048 .name = "ads117x-hifi",
Graeme Gregory2dcf9fb2009-11-04 17:49:22 +000049 .capture = {
50 .stream_name = "Capture",
51 .channels_min = 1,
52 .channels_max = 32,
53 .rates = ADS117X_RATES,
54 .formats = ADS117X_FORMATS,},
55};
Graeme Gregory2dcf9fb2009-11-04 17:49:22 +000056
Kuninori Morimoto93101612018-01-29 04:24:44 +000057static const struct snd_soc_component_driver soc_component_dev_ads117x = {
58 .dapm_widgets = ads117x_dapm_widgets,
59 .num_dapm_widgets = ARRAY_SIZE(ads117x_dapm_widgets),
60 .dapm_routes = ads117x_dapm_routes,
61 .num_dapm_routes = ARRAY_SIZE(ads117x_dapm_routes),
62 .idle_bias_on = 1,
63 .use_pmdown_time = 1,
64 .endianness = 1,
65 .non_legacy_dai_naming = 1,
Mark Brown45a14a82013-08-07 18:24:09 +010066};
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +000067
Bill Pemberton7a79e942012-12-07 09:26:37 -050068static int ads117x_probe(struct platform_device *pdev)
Graeme Gregory2dcf9fb2009-11-04 17:49:22 +000069{
Kuninori Morimoto93101612018-01-29 04:24:44 +000070 return devm_snd_soc_register_component(&pdev->dev,
71 &soc_component_dev_ads117x, &ads117x_dai, 1);
Mark Brownf3d0e822009-11-04 21:43:27 +000072}
73
Florian Vaussard4f2bf0a2016-02-05 16:32:14 +010074#if defined(CONFIG_OF)
75static const struct of_device_id ads117x_dt_ids[] = {
76 { .compatible = "ti,ads1174" },
77 { .compatible = "ti,ads1178" },
78 { },
79};
80MODULE_DEVICE_TABLE(of, ads117x_dt_ids);
81#endif
82
Mark Brownf3d0e822009-11-04 21:43:27 +000083static struct platform_driver ads117x_codec_driver = {
84 .driver = {
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +000085 .name = "ads117x-codec",
Florian Vaussard4f2bf0a2016-02-05 16:32:14 +010086 .of_match_table = of_match_ptr(ads117x_dt_ids),
Mark Brownf3d0e822009-11-04 21:43:27 +000087 },
88
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +000089 .probe = ads117x_probe,
Mark Brownf3d0e822009-11-04 21:43:27 +000090};
91
Mark Brown5bbcc3c2011-11-23 22:52:08 +000092module_platform_driver(ads117x_codec_driver);
Graeme Gregory2dcf9fb2009-11-04 17:49:22 +000093
94MODULE_DESCRIPTION("ASoC ads117x driver");
95MODULE_AUTHOR("Graeme Gregory");
96MODULE_LICENSE("GPL");