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/of_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 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        .non_legacy_dai_naming  = 1,
  77};
  78
  79static int gtm601_platform_probe(struct platform_device *pdev)
  80{
  81        const struct snd_soc_dai_driver *dai_driver;
  82
  83        dai_driver = of_device_get_match_data(&pdev->dev);
  84
  85        return devm_snd_soc_register_component(&pdev->dev,
  86                        &soc_component_dev_gtm601,
  87                        (struct snd_soc_dai_driver *)dai_driver, 1);
  88}
  89
  90static const struct of_device_id gtm601_codec_of_match[] = {
  91        { .compatible = "option,gtm601", .data = (void *)&gtm601_dai },
  92        { .compatible = "broadmobi,bm818", .data = (void *)&bm818_dai },
  93        {},
  94};
  95MODULE_DEVICE_TABLE(of, gtm601_codec_of_match);
  96
  97static struct platform_driver gtm601_codec_driver = {
  98        .driver = {
  99                .name = "gtm601",
 100                .of_match_table = of_match_ptr(gtm601_codec_of_match),
 101        },
 102        .probe = gtm601_platform_probe,
 103};
 104
 105module_platform_driver(gtm601_codec_driver);
 106
 107MODULE_DESCRIPTION("ASoC gtm601 driver");
 108MODULE_AUTHOR("Marek Belisko <marek@goldelico.com>");
 109MODULE_LICENSE("GPL");
 110MODULE_ALIAS("platform:gtm601");
 111