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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * ads117x.c -- Driver for ads1174/8 ADC chips4 *5 * Copyright 2009 ShotSpotter Inc.6 * Author: Graeme Gregory <gg@slimlogic.co.uk>7 */8 9#include <linux/kernel.h>10#include <linux/slab.h>11#include <linux/init.h>12#include <linux/device.h>13#include <linux/module.h>14#include <sound/core.h>15#include <sound/pcm.h>16#include <sound/initval.h>17#include <sound/soc.h>18 19#include <linux/of.h>20 21#define ADS117X_RATES (SNDRV_PCM_RATE_8000_48000)22#define ADS117X_FORMATS (SNDRV_PCM_FMTBIT_S16_LE)23 24static 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 46static struct snd_soc_dai_driver ads117x_dai = {47/* ADC */48 .name = "ads117x-hifi",49 .capture = {50 .stream_name = "Capture",51 .channels_min = 1,52 .channels_max = 32,53 .rates = ADS117X_RATES,54 .formats = ADS117X_FORMATS,},55};56 57static 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};66 67static int ads117x_probe(struct platform_device *pdev)68{69 return devm_snd_soc_register_component(&pdev->dev,70 &soc_component_dev_ads117x, &ads117x_dai, 1);71}72 73#if defined(CONFIG_OF)74static const struct of_device_id ads117x_dt_ids[] = {75 { .compatible = "ti,ads1174" },76 { .compatible = "ti,ads1178" },77 { },78};79MODULE_DEVICE_TABLE(of, ads117x_dt_ids);80#endif81 82static struct platform_driver ads117x_codec_driver = {83 .driver = {84 .name = "ads117x-codec",85 .of_match_table = of_match_ptr(ads117x_dt_ids),86 },87 88 .probe = ads117x_probe,89};90 91module_platform_driver(ads117x_codec_driver);92 93MODULE_DESCRIPTION("ASoC ads117x driver");94MODULE_AUTHOR("Graeme Gregory");95MODULE_LICENSE("GPL");96