LXR linux/sound/soc/codecs/ak4554.c

   1// SPDX-License-Identifier: GPL-2.0
   2// ak4554.c
   3//
   4// Copyright (C) 2013 Renesas Solutions Corp.
   5// Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
   6
   7#include <linux/module.h>
   8#include <sound/soc.h>
   9
  10/*
  11 * ak4554 is very simple DA/AD converter which has no setting register.
  12 *
  13 * CAUTION
  14 *
  15 * ak4554 playback format is SND_SOC_DAIFMT_RIGHT_J,
  16 * and,   capture  format is SND_SOC_DAIFMT_LEFT_J
  17 * on same bit clock, LR clock.
  18 * But, this driver doesn't have snd_soc_dai_ops :: set_fmt
  19 *
  20 * CPU/Codec DAI image
  21 *
  22 * CPU-DAI1 (plaback only fmt = RIGHT_J) --+-- ak4554
  23 *                                         |
  24 * CPU-DAI2 (capture only fmt = LEFT_J) ---+
  25 */
  26
  27static const struct snd_soc_dapm_widget ak4554_dapm_widgets[] = {
  28SND_SOC_DAPM_INPUT("AINL"),
  29SND_SOC_DAPM_INPUT("AINR"),
  30
  31SND_SOC_DAPM_OUTPUT("AOUTL"),
  32SND_SOC_DAPM_OUTPUT("AOUTR"),
  33};
  34
  35static const struct snd_soc_dapm_route ak4554_dapm_routes[] = {
  36        { "Capture", NULL, "AINL" },
  37        { "Capture", NULL, "AINR" },
  38
  39        { "AOUTL", NULL, "Playback" },
  40        { "AOUTR", NULL, "Playback" },
  41};
  42
  43static struct snd_soc_dai_driver ak4554_dai = {
  44        .name = "ak4554-hifi",
  45        .playback = {
  46                .stream_name = "Playback",
  47                .channels_min = 2,
  48                .channels_max = 2,
  49                .rates = SNDRV_PCM_RATE_8000_48000,
  50                .formats = SNDRV_PCM_FMTBIT_S16_LE,
  51        },
  52        .capture = {
  53                .stream_name = "Capture",
  54                .channels_min = 2,
  55                .channels_max = 2,
  56                .rates = SNDRV_PCM_RATE_8000_48000,
  57                .formats = SNDRV_PCM_FMTBIT_S16_LE,
  58        },
  59        .symmetric_rate = 1,
  60};
  61
  62static const struct snd_soc_component_driver soc_component_dev_ak4554 = {
  63        .dapm_widgets           = ak4554_dapm_widgets,
  64        .num_dapm_widgets       = ARRAY_SIZE(ak4554_dapm_widgets),
  65        .dapm_routes            = ak4554_dapm_routes,
  66        .num_dapm_routes        = ARRAY_SIZE(ak4554_dapm_routes),
  67        .idle_bias_on           = 1,
  68        .use_pmdown_time        = 1,
  69        .endianness             = 1,
  70        .non_legacy_dai_naming  = 1,
  71};
  72
  73static int ak4554_soc_probe(struct platform_device *pdev)
  74{
  75        return devm_snd_soc_register_component(&pdev->dev,
  76                                      &soc_component_dev_ak4554,
  77                                      &ak4554_dai, 1);
  78}
  79
  80static const struct of_device_id ak4554_of_match[] = {
  81        { .compatible = "asahi-kasei,ak4554" },
  82        {},
  83};
  84MODULE_DEVICE_TABLE(of, ak4554_of_match);
  85
  86static struct platform_driver ak4554_driver = {
  87        .driver = {
  88                .name = "ak4554-adc-dac",
  89                .of_match_table = ak4554_of_match,
  90        },
  91        .probe  = ak4554_soc_probe,
  92};
  93module_platform_driver(ak4554_driver);
  94
  95MODULE_LICENSE("GPL v2");
  96MODULE_DESCRIPTION("SoC AK4554 driver");
  97MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
  98