root/sound/soc/mediatek/mt8186/mt8186-dai-hostless.c
// SPDX-License-Identifier: GPL-2.0
//
// MediaTek ALSA SoC Audio DAI Hostless Control
//
// Copyright (c) 2022 MediaTek Inc.
// Author: Jiaxin Yu <jiaxin.yu@mediatek.com>

#include "mt8186-afe-common.h"

static const struct snd_pcm_hardware mt8186_hostless_hardware = {
        .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
                 SNDRV_PCM_INFO_MMAP_VALID),
        .period_bytes_min = 256,
        .period_bytes_max = 4 * 48 * 1024,
        .periods_min = 2,
        .periods_max = 256,
        .buffer_bytes_max = 4 * 48 * 1024,
        .fifo_size = 0,
};

/* dai component */
static const struct snd_soc_dapm_route mtk_dai_hostless_routes[] = {
        /* Hostless ADDA Loopback */
        {"ADDA_DL_CH1", "ADDA_UL_CH1 Switch", "Hostless LPBK DL"},
        {"ADDA_DL_CH1", "ADDA_UL_CH2 Switch", "Hostless LPBK DL"},
        {"ADDA_DL_CH2", "ADDA_UL_CH1 Switch", "Hostless LPBK DL"},
        {"ADDA_DL_CH2", "ADDA_UL_CH2 Switch", "Hostless LPBK DL"},
        {"I2S1_CH1", "ADDA_UL_CH1 Switch", "Hostless LPBK DL"},
        {"I2S1_CH2", "ADDA_UL_CH2 Switch", "Hostless LPBK DL"},
        {"I2S3_CH1", "ADDA_UL_CH1 Switch", "Hostless LPBK DL"},
        {"I2S3_CH1", "ADDA_UL_CH2 Switch", "Hostless LPBK DL"},
        {"I2S3_CH2", "ADDA_UL_CH1 Switch", "Hostless LPBK DL"},
        {"I2S3_CH2", "ADDA_UL_CH2 Switch", "Hostless LPBK DL"},
        {"Hostless LPBK UL", NULL, "ADDA_UL_Mux"},

        /* Hostelss FM */
        /* connsys_i2s to hw gain 1*/
        {"Hostless FM UL", NULL, "Connsys I2S"},

        {"HW_GAIN1_IN_CH1", "CONNSYS_I2S_CH1 Switch", "Hostless FM DL"},
        {"HW_GAIN1_IN_CH2", "CONNSYS_I2S_CH2 Switch", "Hostless FM DL"},
        /* hw gain to adda dl */
        {"Hostless FM UL", NULL, "HW Gain 1 Out"},

        {"ADDA_DL_CH1", "GAIN1_OUT_CH1 Switch", "Hostless FM DL"},
        {"ADDA_DL_CH2", "GAIN1_OUT_CH2 Switch", "Hostless FM DL"},
        /* hw gain to i2s3 */
        {"I2S3_CH1", "GAIN1_OUT_CH1 Switch", "Hostless FM DL"},
        {"I2S3_CH2", "GAIN1_OUT_CH2 Switch", "Hostless FM DL"},
        /* hw gain to i2s1 */
        {"I2S1_CH1", "GAIN1_OUT_CH1 Switch", "Hostless FM DL"},
        {"I2S1_CH2", "GAIN1_OUT_CH2 Switch", "Hostless FM DL"},

        /* Hostless_SRC */
        {"ADDA_DL_CH1", "SRC_1_OUT_CH1 Switch", "Hostless_SRC_1_DL"},
        {"ADDA_DL_CH2", "SRC_1_OUT_CH2 Switch", "Hostless_SRC_1_DL"},
        {"I2S1_CH1", "SRC_1_OUT_CH1 Switch", "Hostless_SRC_1_DL"},
        {"I2S1_CH2", "SRC_1_OUT_CH2 Switch", "Hostless_SRC_1_DL"},
        {"I2S3_CH1", "SRC_1_OUT_CH1 Switch", "Hostless_SRC_1_DL"},
        {"I2S3_CH2", "SRC_1_OUT_CH2 Switch", "Hostless_SRC_1_DL"},
        {"Hostless_SRC_1_UL", NULL, "HW_SRC_1_Out"},

        /* Hostless_SRC_bargein */
        {"HW_SRC_1_IN_CH1", "I2S0_CH1 Switch", "Hostless_SRC_Bargein_DL"},
        {"HW_SRC_1_IN_CH2", "I2S0_CH2 Switch", "Hostless_SRC_Bargein_DL"},
        {"Hostless_SRC_Bargein_UL", NULL, "I2S0"},

        /* Hostless AAudio */
        {"Hostless HW Gain AAudio In", NULL, "HW Gain 2 In"},
        {"Hostless SRC AAudio UL", NULL, "HW Gain 2 Out"},
        {"HW_SRC_2_IN_CH1", "HW_GAIN2_OUT_CH1 Switch", "Hostless SRC AAudio DL"},
        {"HW_SRC_2_IN_CH2", "HW_GAIN2_OUT_CH2 Switch", "Hostless SRC AAudio DL"},
};

/* dai ops */
static int mtk_dai_hostless_startup(struct snd_pcm_substream *substream,
                                    struct snd_soc_dai *dai)
{
        struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
        struct snd_pcm_runtime *runtime = substream->runtime;
        int ret;

        snd_soc_set_runtime_hwparams(substream, &mt8186_hostless_hardware);

        ret = snd_pcm_hw_constraint_integer(runtime,
                                            SNDRV_PCM_HW_PARAM_PERIODS);
        if (ret < 0) {
                dev_err(afe->dev, "snd_pcm_hw_constraint_integer failed\n");
                return ret;
        }

        return 0;
}

static const struct snd_soc_dai_ops mtk_dai_hostless_ops = {
        .startup = mtk_dai_hostless_startup,
};

/* dai driver */
#define MTK_HOSTLESS_RATES (SNDRV_PCM_RATE_8000_48000 |\
                           SNDRV_PCM_RATE_88200 |\
                           SNDRV_PCM_RATE_96000 |\
                           SNDRV_PCM_RATE_176400 |\
                           SNDRV_PCM_RATE_192000)

#define MTK_HOSTLESS_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
                             SNDRV_PCM_FMTBIT_S24_LE |\
                             SNDRV_PCM_FMTBIT_S32_LE)

static struct snd_soc_dai_driver mtk_dai_hostless_driver[] = {
        {
                .name = "Hostless LPBK DAI",
                .id = MT8186_DAI_HOSTLESS_LPBK,
                .playback = {
                        .stream_name = "Hostless LPBK DL",
                        .channels_min = 1,
                        .channels_max = 2,
                        .rates = MTK_HOSTLESS_RATES,
                        .formats = MTK_HOSTLESS_FORMATS,
                },
                .capture = {
                        .stream_name = "Hostless LPBK UL",
                        .channels_min = 1,
                        .channels_max = 2,
                        .rates = MTK_HOSTLESS_RATES,
                        .formats = MTK_HOSTLESS_FORMATS,
                },
                .ops = &mtk_dai_hostless_ops,
        },
        {
                .name = "Hostless FM DAI",
                .id = MT8186_DAI_HOSTLESS_FM,
                .playback = {
                        .stream_name = "Hostless FM DL",
                        .channels_min = 1,
                        .channels_max = 2,
                        .rates = MTK_HOSTLESS_RATES,
                        .formats = MTK_HOSTLESS_FORMATS,
                },
                .capture = {
                        .stream_name = "Hostless FM UL",
                        .channels_min = 1,
                        .channels_max = 2,
                        .rates = MTK_HOSTLESS_RATES,
                        .formats = MTK_HOSTLESS_FORMATS,
                },
                .ops = &mtk_dai_hostless_ops,
        },
        {
                .name = "Hostless_SRC_1_DAI",
                .id = MT8186_DAI_HOSTLESS_SRC_1,
                .playback = {
                        .stream_name = "Hostless_SRC_1_DL",
                        .channels_min = 1,
                        .channels_max = 2,
                        .rates = MTK_HOSTLESS_RATES,
                        .formats = MTK_HOSTLESS_FORMATS,
                },
                .capture = {
                        .stream_name = "Hostless_SRC_1_UL",
                        .channels_min = 1,
                        .channels_max = 2,
                        .rates = MTK_HOSTLESS_RATES,
                        .formats = MTK_HOSTLESS_FORMATS,
                },
                .ops = &mtk_dai_hostless_ops,
        },
        {
                .name = "Hostless_SRC_Bargein_DAI",
                .id = MT8186_DAI_HOSTLESS_SRC_BARGEIN,
                .playback = {
                        .stream_name = "Hostless_SRC_Bargein_DL",
                        .channels_min = 1,
                        .channels_max = 2,
                        .rates = MTK_HOSTLESS_RATES,
                        .formats = MTK_HOSTLESS_FORMATS,
                },
                .capture = {
                        .stream_name = "Hostless_SRC_Bargein_UL",
                        .channels_min = 1,
                        .channels_max = 2,
                        .rates = MTK_HOSTLESS_RATES,
                        .formats = MTK_HOSTLESS_FORMATS,
                },
                .ops = &mtk_dai_hostless_ops,
        },
        /* BE dai */
        {
                .name = "Hostless_UL1 DAI",
                .id = MT8186_DAI_HOSTLESS_UL1,
                .capture = {
                        .stream_name = "Hostless_UL1 UL",
                        .channels_min = 1,
                        .channels_max = 4,
                        .rates = MTK_HOSTLESS_RATES,
                        .formats = MTK_HOSTLESS_FORMATS,
                },
                .ops = &mtk_dai_hostless_ops,
        },
        {
                .name = "Hostless_UL2 DAI",
                .id = MT8186_DAI_HOSTLESS_UL2,
                .capture = {
                        .stream_name = "Hostless_UL2 UL",
                        .channels_min = 1,
                        .channels_max = 4,
                        .rates = MTK_HOSTLESS_RATES,
                        .formats = MTK_HOSTLESS_FORMATS,
                },
                .ops = &mtk_dai_hostless_ops,
        },
        {
                .name = "Hostless_UL3 DAI",
                .id = MT8186_DAI_HOSTLESS_UL3,
                .capture = {
                        .stream_name = "Hostless_UL3 UL",
                        .channels_min = 1,
                        .channels_max = 2,
                        .rates = MTK_HOSTLESS_RATES,
                        .formats = MTK_HOSTLESS_FORMATS,
                },
                .ops = &mtk_dai_hostless_ops,
        },
        {
                .name = "Hostless_UL5 DAI",
                .id = MT8186_DAI_HOSTLESS_UL5,
                .capture = {
                        .stream_name = "Hostless_UL5 UL",
                        .channels_min = 1,
                        .channels_max = 12,
                        .rates = MTK_HOSTLESS_RATES,
                        .formats = MTK_HOSTLESS_FORMATS,
                },
                .ops = &mtk_dai_hostless_ops,
        },
        {
                .name = "Hostless_UL6 DAI",
                .id = MT8186_DAI_HOSTLESS_UL6,
                .capture = {
                        .stream_name = "Hostless_UL6 UL",
                        .channels_min = 1,
                        .channels_max = 2,
                        .rates = MTK_HOSTLESS_RATES,
                        .formats = MTK_HOSTLESS_FORMATS,
                },
                .ops = &mtk_dai_hostless_ops,
        },
        {
                .name = "Hostless HW Gain AAudio DAI",
                .id = MT8186_DAI_HOSTLESS_HW_GAIN_AAUDIO,
                .capture = {
                        .stream_name = "Hostless HW Gain AAudio In",
                        .channels_min = 1,
                        .channels_max = 2,
                        .rates = MTK_HOSTLESS_RATES,
                        .formats = MTK_HOSTLESS_FORMATS,
                },
                .ops = &mtk_dai_hostless_ops,
        },
        {
                .name = "Hostless SRC AAudio DAI",
                .id = MT8186_DAI_HOSTLESS_SRC_AAUDIO,
                .playback = {
                        .stream_name = "Hostless SRC AAudio DL",
                        .channels_min = 1,
                        .channels_max = 2,
                        .rates = MTK_HOSTLESS_RATES,
                        .formats = MTK_HOSTLESS_FORMATS,
                },
                .capture = {
                        .stream_name = "Hostless SRC AAudio UL",
                        .channels_min = 1,
                        .channels_max = 2,
                        .rates = MTK_HOSTLESS_RATES,
                        .formats = MTK_HOSTLESS_FORMATS,
                },
                .ops = &mtk_dai_hostless_ops,
        },
};

int mt8186_dai_hostless_register(struct mtk_base_afe *afe)
{
        struct mtk_base_afe_dai *dai;

        dai = devm_kzalloc(afe->dev, sizeof(*dai), GFP_KERNEL);
        if (!dai)
                return -ENOMEM;

        list_add(&dai->list, &afe->sub_dais);

        dai->dai_drivers = mtk_dai_hostless_driver;
        dai->num_dai_drivers = ARRAY_SIZE(mtk_dai_hostless_driver);

        dai->dapm_routes = mtk_dai_hostless_routes;
        dai->num_dapm_routes = ARRAY_SIZE(mtk_dai_hostless_routes);

        return 0;
}