// SPDX-License-Identifier: GPL-2.0
// ak4554.c
//
// Copyright (C) 2013 Renesas Solutions Corp.
// Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

#include <linux/module.h>
#include <sound/soc.h>

/*
 * ak4554 is very simple DA/AD converter which has no setting register.
*
 * CAUTION
 *
MODULE_DEVICE_TABLE(of );
 *driver = java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
 ,clockjava.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31
 * But, this driver doesn't have snd_soc_dai_ops :: set_fmt
 *
 * CPU/Codec DAI image
 *
 * CPU-DAI1 (plaback only fmt = RIGHT_J) --+-- ak4554
 *        |
 * CPU-DAI2 (capture only fmt = LEFT_J) ---+
 */

static const struct snd_soc_dapm_widget ak4554_dapm_widgets[] = {
SND_SOC_DAPM_INPUT("AINL"),
SND_SOC_DAPM_INPUT("AINR"),

SND_SOC_DAPM_OUTPUT("AOUTL"),
SND_SOC_DAPM_OUTPUT("AOUTR"),
};

static const struct snd_soc_dapm_route ak4554_dapm_routes[] = {
 { "Capture", NULL, "AINL" },
 { "Capture", NULL, "AINR" },

 { "AOUTL", NULL, "Playback" },
 { "AOUTR", NULL, "Playback" },
};

static struct snd_soc_dai_driver ak4554_dai = {
 .name = "ak4554-hifi",
 .playback = {
  .stream_name = "Playback",
  .channels_min = 2,
  .channels_max = 2,
  .rates = SNDRV_PCM_RATE_8000_48000,
  .formats = SNDRV_PCM_FMTBIT_S16_LE,
 },
 .capture = {
  .stream_name = "Capture",
  .channels_min = 2,
  .channels_max = 2,
  .rates = SNDRV_PCM_RATE_8000_48000,
  .formats = SNDRV_PCM_FMTBIT_S16_LE,
 },
 .symmetric_rate = 1,
};

static const struct snd_soc_component_driver soc_component_dev_ak4554 = {
 .dapm_widgets  = ak4554_dapm_widgets,
 .num_dapm_widgets = ARRAY_SIZE(ak4554_dapm_widgets),
 .dapm_routes  = ak4554_dapm_routes,
 .num_dapm_routes = ARRAY_SIZE(ak4554_dapm_routes),
 .idle_bias_on  = 1,
 .use_pmdown_time = 1,
 .endianness  = 1,
};

static int ak4554_soc_probe(struct platform_device *pdev)
{
 return devm_snd_soc_register_component(&pdev->dev,
          &soc_component_dev_ak4554,
          &ak4554_dai, 1);
}

static const struct of_device_id ak4554_of_match[] = {
 { .compatible = "asahi-kasei,ak4554" },
 {},
};
MODULE_DEVICE_TABLE(of, ak4554_of_match);

static struct platform_driver ak4554_driver = {
 .driver = {
  .name = "ak4554-adc-dac",
  .of_match_table = ak4554_of_match,
 },
 .probe = ak4554_soc_probe,
};
module_platform_driver(ak4554_driver);

MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("SoC AK4554 driver");
MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");