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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * This is a simple driver for the GTM601 Voice PCM interface4 *5 * Copyright (C) 2015 Goldelico GmbH6 *7 * Author: Marek Belisko <marek@goldelico.com>8 *9 * Based on wm8727.c driver10 */11 12#include <linux/init.h>13#include <linux/slab.h>14#include <linux/module.h>15#include <linux/kernel.h>16#include <linux/of.h>17#include <sound/core.h>18#include <sound/pcm.h>19#include <sound/initval.h>20#include <sound/soc.h>21 22static const struct snd_soc_dapm_widget gtm601_dapm_widgets[] = {23 SND_SOC_DAPM_OUTPUT("AOUT"),24 SND_SOC_DAPM_INPUT("AIN"),25};26 27static const struct snd_soc_dapm_route gtm601_dapm_routes[] = {28 { "AOUT", NULL, "Playback" },29 { "Capture", NULL, "AIN" },30};31 32static struct snd_soc_dai_driver gtm601_dai = {33 .name = "gtm601",34 .playback = {35 .stream_name = "Playback",36 .channels_min = 1,37 .channels_max = 1,38 .rates = SNDRV_PCM_RATE_8000,39 .formats = SNDRV_PCM_FMTBIT_S16_LE,40 },41 .capture = {42 .stream_name = "Capture",43 .channels_min = 1,44 .channels_max = 1,45 .rates = SNDRV_PCM_RATE_8000,46 .formats = SNDRV_PCM_FMTBIT_S16_LE,47 },48};49 50static struct snd_soc_dai_driver bm818_dai = {51 .name = "bm818",52 .playback = {53 .stream_name = "Playback",54 .channels_min = 2,55 .channels_max = 2,56 .rates = SNDRV_PCM_RATE_48000,57 .formats = SNDRV_PCM_FMTBIT_S16_LE,58 },59 .capture = {60 .stream_name = "Capture",61 .channels_min = 2,62 .channels_max = 2,63 .rates = SNDRV_PCM_RATE_48000,64 .formats = SNDRV_PCM_FMTBIT_S16_LE,65 },66};67 68static const struct snd_soc_component_driver soc_component_dev_gtm601 = {69 .dapm_widgets = gtm601_dapm_widgets,70 .num_dapm_widgets = ARRAY_SIZE(gtm601_dapm_widgets),71 .dapm_routes = gtm601_dapm_routes,72 .num_dapm_routes = ARRAY_SIZE(gtm601_dapm_routes),73 .idle_bias_on = 1,74 .use_pmdown_time = 1,75 .endianness = 1,76};77 78static int gtm601_platform_probe(struct platform_device *pdev)79{80 const struct snd_soc_dai_driver *dai_driver;81 82 dai_driver = of_device_get_match_data(&pdev->dev);83 84 return devm_snd_soc_register_component(&pdev->dev,85 &soc_component_dev_gtm601,86 (struct snd_soc_dai_driver *)dai_driver, 1);87}88 89static const struct of_device_id gtm601_codec_of_match[] __maybe_unused = {90 { .compatible = "option,gtm601", .data = (void *)>m601_dai },91 { .compatible = "broadmobi,bm818", .data = (void *)&bm818_dai },92 {},93};94MODULE_DEVICE_TABLE(of, gtm601_codec_of_match);95 96static struct platform_driver gtm601_codec_driver = {97 .driver = {98 .name = "gtm601",99 .of_match_table = of_match_ptr(gtm601_codec_of_match),100 },101 .probe = gtm601_platform_probe,102};103 104module_platform_driver(gtm601_codec_driver);105 106MODULE_DESCRIPTION("ASoC gtm601 driver");107MODULE_AUTHOR("Marek Belisko <marek@goldelico.com>");108MODULE_LICENSE("GPL");109MODULE_ALIAS("platform:gtm601");110