LXR linux/sound/soc/codecs/gtm601.c

   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * This is a simple driver for the GTM601 Voice PCM interface
   4 *
   5 * Copyright (C) 2015 Goldelico GmbH
   6 *
   7 * Author: Marek Belisko <marek@goldelico.com>
   8 *
   9 * Based on wm8727.c driver
  10 */
  11
  12#include <linux/init.h>
  13#include <linux/slab.h>
  14#include <linux/module.h>
  15#include <linux/kernel.h>
  16#include <linux/device.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 const struct snd_soc_component_driver soc_component_dev_gtm601 = {
  51        .dapm_widgets           = gtm601_dapm_widgets,
  52        .num_dapm_widgets       = ARRAY_SIZE(gtm601_dapm_widgets),
  53        .dapm_routes            = gtm601_dapm_routes,
  54        .num_dapm_routes        = ARRAY_SIZE(gtm601_dapm_routes),
  55        .idle_bias_on           = 1,
  56        .use_pmdown_time        = 1,
  57        .endianness             = 1,
  58        .non_legacy_dai_naming  = 1,
  59};
  60
  61static int gtm601_platform_probe(struct platform_device *pdev)
  62{
  63        return devm_snd_soc_register_component(&pdev->dev,
  64                        &soc_component_dev_gtm601, &gtm601_dai, 1);
  65}
  66
  67#if defined(CONFIG_OF)
  68static const struct of_device_id gtm601_codec_of_match[] = {
  69        { .compatible = "option,gtm601", },
  70        {},
  71};
  72MODULE_DEVICE_TABLE(of, gtm601_codec_of_match);
  73#endif
  74
  75static struct platform_driver gtm601_codec_driver = {
  76        .driver = {
  77                .name = "gtm601",
  78                .of_match_table = of_match_ptr(gtm601_codec_of_match),
  79        },
  80        .probe = gtm601_platform_probe,
  81};
  82
  83module_platform_driver(gtm601_codec_driver);
  84
  85MODULE_DESCRIPTION("ASoC gtm601 driver");
  86MODULE_AUTHOR("Marek Belisko <marek@goldelico.com>");
  87MODULE_LICENSE("GPL");
  88MODULE_ALIAS("platform:gtm601");
  89