// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Driver for generic Bluetooth SCO link
 * Copyright 2011 Lars-Peter Clausen <lars@metafoo.de>
 */

#include <linux/init.h>
#include <linux/module.h>
#include <linux/platform_device.h>

#include <sound/soc.h>

static const struct snd_soc_dapm_widget bt_sco_widgets[] = {
        SND_SOC_DAPM_INPUT("RX"),
        SND_SOC_DAPM_OUTPUT("TX"),
        SND_SOC_DAPM_AIF_IN("BT_SCO_RX", "Playback", 0,
                            SND_SOC_NOPM, 0, 0),
        SND_SOC_DAPM_AIF_OUT("BT_SCO_TX", "Capture", 0,
                             SND_SOC_NOPM, 0, 0),
        SND_SOC_DAPM_AIF_IN("BT_SCO_RX_WB", "WB Playback", 0,
                            SND_SOC_NOPM, 0, 0),
        SND_SOC_DAPM_AIF_OUT("BT_SCO_TX_WB", "WB Capture", 0,
                             SND_SOC_NOPM, 0, 0),
};

static const struct snd_soc_dapm_route bt_sco_routes[] = {
        { "BT_SCO_TX", NULL, "RX" },
        { "TX", NULL, "BT_SCO_RX" },
        { "BT_SCO_TX_WB", NULL, "RX" },
        { "TX", NULL, "BT_SCO_RX_WB" },
};

static struct snd_soc_dai_driver bt_sco_dai[] = {
        {
                .name = "bt-sco-pcm",
                .playback = {
                        .stream_name = "Playback",
                        .channels_min = 1,
                        .channels_max = 1,
                        .rates = SNDRV_PCM_RATE_8000,
                        .formats = SNDRV_PCM_FMTBIT_S16_LE,
                },
                .capture = {
                         .stream_name = "Capture",
                        .channels_min = 1,
                        .channels_max = 1,
                        .rates = SNDRV_PCM_RATE_8000,
                        .formats = SNDRV_PCM_FMTBIT_S16_LE,
                },
        },
        {
                .name = "bt-sco-pcm-wb",
                .playback = {
                        .stream_name = "WB Playback",
                        .channels_min = 1,
                        .channels_max = 1,
                        .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000,
                        .formats = SNDRV_PCM_FMTBIT_S16_LE,
                },
                .capture = {
                         .stream_name = "WB Capture",
                        .channels_min = 1,
                        .channels_max = 1,
                        .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000,
                        .formats = SNDRV_PCM_FMTBIT_S16_LE,
                },
        }
};

static const struct snd_soc_component_driver soc_component_dev_bt_sco = {
        .dapm_widgets           = bt_sco_widgets,
        .num_dapm_widgets       = ARRAY_SIZE(bt_sco_widgets),
        .dapm_routes            = bt_sco_routes,
        .num_dapm_routes        = ARRAY_SIZE(bt_sco_routes),
        .idle_bias_on           = 1,
        .use_pmdown_time        = 1,
        .endianness             = 1,
};

static int bt_sco_probe(struct platform_device *pdev)
{
        return devm_snd_soc_register_component(&pdev->dev,
                                      &soc_component_dev_bt_sco,
                                      bt_sco_dai, ARRAY_SIZE(bt_sco_dai));
}

static const struct platform_device_id bt_sco_driver_ids[] = {
        {
                .name           = "dfbmcs320",
        },
        {
                .name           = "bt-sco",
        },
        {},
};
MODULE_DEVICE_TABLE(platform, bt_sco_driver_ids);

#if defined(CONFIG_OF)
static const struct of_device_id bt_sco_codec_of_match[] = {
        { .compatible = "delta,dfbmcs320", },
        { .compatible = "linux,bt-sco", },
        {},
};
MODULE_DEVICE_TABLE(of, bt_sco_codec_of_match);
#endif

static struct platform_driver bt_sco_driver = {
        .driver = {
                .name = "bt-sco",
                .of_match_table = of_match_ptr(bt_sco_codec_of_match),
        },
        .probe = bt_sco_probe,
        .id_table = bt_sco_driver_ids,
};

module_platform_driver(bt_sco_driver);

MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
MODULE_DESCRIPTION("ASoC generic bluetooth sco link driver");
MODULE_LICENSE("GPL");