1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-or-later
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * ads117x.c -- Driver for ads1174/8 ADC chips
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright 2009 ShotSpotter Inc.
6*4882a593Smuzhiyun * Author: Graeme Gregory <gg@slimlogic.co.uk>
7*4882a593Smuzhiyun */
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun #include <linux/kernel.h>
10*4882a593Smuzhiyun #include <linux/slab.h>
11*4882a593Smuzhiyun #include <linux/init.h>
12*4882a593Smuzhiyun #include <linux/device.h>
13*4882a593Smuzhiyun #include <linux/module.h>
14*4882a593Smuzhiyun #include <sound/core.h>
15*4882a593Smuzhiyun #include <sound/pcm.h>
16*4882a593Smuzhiyun #include <sound/initval.h>
17*4882a593Smuzhiyun #include <sound/soc.h>
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun #include <linux/of.h>
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun #define ADS117X_RATES (SNDRV_PCM_RATE_8000_48000)
22*4882a593Smuzhiyun #define ADS117X_FORMATS (SNDRV_PCM_FMTBIT_S16_LE)
23*4882a593Smuzhiyun
24*4882a593Smuzhiyun static const struct snd_soc_dapm_widget ads117x_dapm_widgets[] = {
25*4882a593Smuzhiyun SND_SOC_DAPM_INPUT("Input1"),
26*4882a593Smuzhiyun SND_SOC_DAPM_INPUT("Input2"),
27*4882a593Smuzhiyun SND_SOC_DAPM_INPUT("Input3"),
28*4882a593Smuzhiyun SND_SOC_DAPM_INPUT("Input4"),
29*4882a593Smuzhiyun SND_SOC_DAPM_INPUT("Input5"),
30*4882a593Smuzhiyun SND_SOC_DAPM_INPUT("Input6"),
31*4882a593Smuzhiyun SND_SOC_DAPM_INPUT("Input7"),
32*4882a593Smuzhiyun SND_SOC_DAPM_INPUT("Input8"),
33*4882a593Smuzhiyun };
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun static const struct snd_soc_dapm_route ads117x_dapm_routes[] = {
36*4882a593Smuzhiyun { "Capture", NULL, "Input1" },
37*4882a593Smuzhiyun { "Capture", NULL, "Input2" },
38*4882a593Smuzhiyun { "Capture", NULL, "Input3" },
39*4882a593Smuzhiyun { "Capture", NULL, "Input4" },
40*4882a593Smuzhiyun { "Capture", NULL, "Input5" },
41*4882a593Smuzhiyun { "Capture", NULL, "Input6" },
42*4882a593Smuzhiyun { "Capture", NULL, "Input7" },
43*4882a593Smuzhiyun { "Capture", NULL, "Input8" },
44*4882a593Smuzhiyun };
45*4882a593Smuzhiyun
46*4882a593Smuzhiyun static struct snd_soc_dai_driver ads117x_dai = {
47*4882a593Smuzhiyun /* ADC */
48*4882a593Smuzhiyun .name = "ads117x-hifi",
49*4882a593Smuzhiyun .capture = {
50*4882a593Smuzhiyun .stream_name = "Capture",
51*4882a593Smuzhiyun .channels_min = 1,
52*4882a593Smuzhiyun .channels_max = 32,
53*4882a593Smuzhiyun .rates = ADS117X_RATES,
54*4882a593Smuzhiyun .formats = ADS117X_FORMATS,},
55*4882a593Smuzhiyun };
56*4882a593Smuzhiyun
57*4882a593Smuzhiyun static const struct snd_soc_component_driver soc_component_dev_ads117x = {
58*4882a593Smuzhiyun .dapm_widgets = ads117x_dapm_widgets,
59*4882a593Smuzhiyun .num_dapm_widgets = ARRAY_SIZE(ads117x_dapm_widgets),
60*4882a593Smuzhiyun .dapm_routes = ads117x_dapm_routes,
61*4882a593Smuzhiyun .num_dapm_routes = ARRAY_SIZE(ads117x_dapm_routes),
62*4882a593Smuzhiyun .idle_bias_on = 1,
63*4882a593Smuzhiyun .use_pmdown_time = 1,
64*4882a593Smuzhiyun .endianness = 1,
65*4882a593Smuzhiyun .non_legacy_dai_naming = 1,
66*4882a593Smuzhiyun };
67*4882a593Smuzhiyun
ads117x_probe(struct platform_device * pdev)68*4882a593Smuzhiyun static int ads117x_probe(struct platform_device *pdev)
69*4882a593Smuzhiyun {
70*4882a593Smuzhiyun return devm_snd_soc_register_component(&pdev->dev,
71*4882a593Smuzhiyun &soc_component_dev_ads117x, &ads117x_dai, 1);
72*4882a593Smuzhiyun }
73*4882a593Smuzhiyun
74*4882a593Smuzhiyun #if defined(CONFIG_OF)
75*4882a593Smuzhiyun static const struct of_device_id ads117x_dt_ids[] = {
76*4882a593Smuzhiyun { .compatible = "ti,ads1174" },
77*4882a593Smuzhiyun { .compatible = "ti,ads1178" },
78*4882a593Smuzhiyun { },
79*4882a593Smuzhiyun };
80*4882a593Smuzhiyun MODULE_DEVICE_TABLE(of, ads117x_dt_ids);
81*4882a593Smuzhiyun #endif
82*4882a593Smuzhiyun
83*4882a593Smuzhiyun static struct platform_driver ads117x_codec_driver = {
84*4882a593Smuzhiyun .driver = {
85*4882a593Smuzhiyun .name = "ads117x-codec",
86*4882a593Smuzhiyun .of_match_table = of_match_ptr(ads117x_dt_ids),
87*4882a593Smuzhiyun },
88*4882a593Smuzhiyun
89*4882a593Smuzhiyun .probe = ads117x_probe,
90*4882a593Smuzhiyun };
91*4882a593Smuzhiyun
92*4882a593Smuzhiyun module_platform_driver(ads117x_codec_driver);
93*4882a593Smuzhiyun
94*4882a593Smuzhiyun MODULE_DESCRIPTION("ASoC ads117x driver");
95*4882a593Smuzhiyun MODULE_AUTHOR("Graeme Gregory");
96*4882a593Smuzhiyun MODULE_LICENSE("GPL");
97