// SPDX-License-Identifier: GPL-2.0
//
// MediaTek ALSA SoC Audio DAI ADDA Control
//
// Copyright (c) 2018 MediaTek Inc.
// Author: KaiChieh Chuang <kaichieh.chuang@mediatek.com>

#include <linux/regmap.h>
#include <linux/delay.h>
#include "mt6797-afe-common.h"
#include "mt6797-interconnection.h"
#include "mt6797-reg.h"
#include "../common/mtk-dai-adda-common.h"

/* dai component */
static const struct snd_kcontrol_new mtk_adda_dl_ch1_mix[] = {
        SOC_DAPM_SINGLE_AUTODISABLE("DL1_CH1", AFE_CONN3, I_DL1_CH1, 1, 0),
        SOC_DAPM_SINGLE_AUTODISABLE("DL2_CH1", AFE_CONN3, I_DL2_CH1, 1, 0),
        SOC_DAPM_SINGLE_AUTODISABLE("DL3_CH1", AFE_CONN3, I_DL3_CH1, 1, 0),
        SOC_DAPM_SINGLE_AUTODISABLE("ADDA_UL_CH2", AFE_CONN3,
                                    I_ADDA_UL_CH2, 1, 0),
        SOC_DAPM_SINGLE_AUTODISABLE("ADDA_UL_CH1", AFE_CONN3,
                                    I_ADDA_UL_CH1, 1, 0),
        SOC_DAPM_SINGLE_AUTODISABLE("PCM_1_CAP_CH1", AFE_CONN3,
                                    I_PCM_1_CAP_CH1, 1, 0),
        SOC_DAPM_SINGLE_AUTODISABLE("PCM_2_CAP_CH1", AFE_CONN3,
                                    I_PCM_2_CAP_CH1, 1, 0),
};

static const struct snd_kcontrol_new mtk_adda_dl_ch2_mix[] = {
        SOC_DAPM_SINGLE_AUTODISABLE("DL1_CH1", AFE_CONN4, I_DL1_CH1, 1, 0),
        SOC_DAPM_SINGLE_AUTODISABLE("DL1_CH2", AFE_CONN4, I_DL1_CH2, 1, 0),
        SOC_DAPM_SINGLE_AUTODISABLE("DL2_CH1", AFE_CONN4, I_DL2_CH1, 1, 0),
        SOC_DAPM_SINGLE_AUTODISABLE("DL2_CH2", AFE_CONN4, I_DL2_CH2, 1, 0),
        SOC_DAPM_SINGLE_AUTODISABLE("DL3_CH1", AFE_CONN4, I_DL3_CH1, 1, 0),
        SOC_DAPM_SINGLE_AUTODISABLE("DL3_CH2", AFE_CONN4, I_DL3_CH2, 1, 0),
        SOC_DAPM_SINGLE_AUTODISABLE("ADDA_UL_CH2", AFE_CONN4,
                                    I_ADDA_UL_CH2, 1, 0),
        SOC_DAPM_SINGLE_AUTODISABLE("ADDA_UL_CH1", AFE_CONN4,
                                    I_ADDA_UL_CH1, 1, 0),
        SOC_DAPM_SINGLE_AUTODISABLE("PCM_1_CAP_CH1", AFE_CONN4,
                                    I_PCM_1_CAP_CH1, 1, 0),
        SOC_DAPM_SINGLE_AUTODISABLE("PCM_2_CAP_CH1", AFE_CONN4,
                                    I_PCM_2_CAP_CH1, 1, 0),
        SOC_DAPM_SINGLE_AUTODISABLE("PCM_1_CAP_CH2", AFE_CONN4,
                                    I_PCM_1_CAP_CH2, 1, 0),
        SOC_DAPM_SINGLE_AUTODISABLE("PCM_2_CAP_CH2", AFE_CONN4,
                                    I_PCM_2_CAP_CH2, 1, 0),
};

static int mtk_adda_ul_event(struct snd_soc_dapm_widget *w,
                             struct snd_kcontrol *kcontrol,
                             int event)
{
        struct snd_soc_component *cmpnt = snd_soc_dapm_to_component(w->dapm);
        struct mtk_base_afe *afe = snd_soc_component_get_drvdata(cmpnt);

        dev_dbg(afe->dev, "%s(), name %s, event 0x%x\n",
                __func__, w->name, event);

        switch (event) {
        case SND_SOC_DAPM_POST_PMD:
                /* should delayed 1/fs(smallest is 8k) = 125us before afe off */
                usleep_range(125, 135);
                break;
        default:
                break;
        }

        return 0;
}

enum {
        SUPPLY_SEQ_AUD_TOP_PDN,
        SUPPLY_SEQ_ADDA_AFE_ON,
        SUPPLY_SEQ_ADDA_DL_ON,
        SUPPLY_SEQ_ADDA_UL_ON,
};

static const struct snd_soc_dapm_widget mtk_dai_adda_widgets[] = {
        /* adda */
        SND_SOC_DAPM_MIXER("ADDA_DL_CH1", SND_SOC_NOPM, 0, 0,
                           mtk_adda_dl_ch1_mix,
                           ARRAY_SIZE(mtk_adda_dl_ch1_mix)),
        SND_SOC_DAPM_MIXER("ADDA_DL_CH2", SND_SOC_NOPM, 0, 0,
                           mtk_adda_dl_ch2_mix,
                           ARRAY_SIZE(mtk_adda_dl_ch2_mix)),

        SND_SOC_DAPM_SUPPLY_S("ADDA Enable", SUPPLY_SEQ_ADDA_AFE_ON,
                              AFE_ADDA_UL_DL_CON0, ADDA_AFE_ON_SFT, 0,
                              NULL, 0),

        SND_SOC_DAPM_SUPPLY_S("ADDA Playback Enable", SUPPLY_SEQ_ADDA_DL_ON,
                              AFE_ADDA_DL_SRC2_CON0,
                              DL_2_SRC_ON_TMP_CTL_PRE_SFT, 0,
                              NULL, 0),

        SND_SOC_DAPM_SUPPLY_S("ADDA Capture Enable", SUPPLY_SEQ_ADDA_UL_ON,
                              AFE_ADDA_UL_SRC_CON0,
                              UL_SRC_ON_TMP_CTL_SFT, 0,
                              mtk_adda_ul_event,
                              SND_SOC_DAPM_POST_PMD),

        SND_SOC_DAPM_SUPPLY_S("aud_dac_clk", SUPPLY_SEQ_AUD_TOP_PDN,
                              AUDIO_TOP_CON0, PDN_DAC_SFT, 1,
                              NULL, 0),
        SND_SOC_DAPM_SUPPLY_S("aud_dac_predis_clk", SUPPLY_SEQ_AUD_TOP_PDN,
                              AUDIO_TOP_CON0, PDN_DAC_PREDIS_SFT, 1,
                              NULL, 0),

        SND_SOC_DAPM_SUPPLY_S("aud_adc_clk", SUPPLY_SEQ_AUD_TOP_PDN,
                              AUDIO_TOP_CON0, PDN_ADC_SFT, 1,
                              NULL, 0),

        SND_SOC_DAPM_CLOCK_SUPPLY("mtkaif_26m_clk"),
};

static const struct snd_soc_dapm_route mtk_dai_adda_routes[] = {
        /* playback */
        {"ADDA_DL_CH1", "DL1_CH1", "DL1"},
        {"ADDA_DL_CH2", "DL1_CH1", "DL1"},
        {"ADDA_DL_CH2", "DL1_CH2", "DL1"},

        {"ADDA_DL_CH1", "DL2_CH1", "DL2"},
        {"ADDA_DL_CH2", "DL2_CH1", "DL2"},
        {"ADDA_DL_CH2", "DL2_CH2", "DL2"},

        {"ADDA_DL_CH1", "DL3_CH1", "DL3"},
        {"ADDA_DL_CH2", "DL3_CH1", "DL3"},
        {"ADDA_DL_CH2", "DL3_CH2", "DL3"},

        {"ADDA Playback", NULL, "ADDA_DL_CH1"},
        {"ADDA Playback", NULL, "ADDA_DL_CH2"},

        /* adda enable */
        {"ADDA Playback", NULL, "ADDA Enable"},
        {"ADDA Playback", NULL, "ADDA Playback Enable"},
        {"ADDA Capture", NULL, "ADDA Enable"},
        {"ADDA Capture", NULL, "ADDA Capture Enable"},

        /* clk */
        {"ADDA Playback", NULL, "mtkaif_26m_clk"},
        {"ADDA Playback", NULL, "aud_dac_clk"},
        {"ADDA Playback", NULL, "aud_dac_predis_clk"},

        {"ADDA Capture", NULL, "mtkaif_26m_clk"},
        {"ADDA Capture", NULL, "aud_adc_clk"},
};

/* dai ops */
static int mtk_dai_adda_hw_params(struct snd_pcm_substream *substream,
                                  struct snd_pcm_hw_params *params,
                                  struct snd_soc_dai *dai)
{
        struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
        unsigned int rate = params_rate(params);

        dev_dbg(afe->dev, "%s(), id %d, stream %d, rate %d\n",
                __func__, dai->id, substream->stream, rate);

        if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
                unsigned int dl_src2_con0 = 0;
                unsigned int dl_src2_con1 = 0;

                /* clean predistortion */
                regmap_write(afe->regmap, AFE_ADDA_PREDIS_CON0, 0);
                regmap_write(afe->regmap, AFE_ADDA_PREDIS_CON1, 0);

                /* set input sampling rate */
                dl_src2_con0 = mtk_adda_dl_rate_transform(afe, rate) << 28;

                /* set output mode */
                switch (rate) {
                case 192000:
                        dl_src2_con0 |= (0x1 << 24); /* UP_SAMPLING_RATE_X2 */
                        dl_src2_con0 |= 1 << 14;
                        break;
                case 96000:
                        dl_src2_con0 |= (0x2 << 24); /* UP_SAMPLING_RATE_X4 */
                        dl_src2_con0 |= 1 << 14;
                        break;
                default:
                        dl_src2_con0 |= (0x3 << 24); /* UP_SAMPLING_RATE_X8 */
                        break;
                }

                /* turn off mute function */
                dl_src2_con0 |= (0x03 << 11);

                /* set voice input data if input sample rate is 8k or 16k */
                if (rate == 8000 || rate == 16000)
                        dl_src2_con0 |= 0x01 << 5;

                if (rate < 96000) {
                        /* SA suggest apply -0.3db to audio/speech path */
                        dl_src2_con1 = 0xf74f0000;
                } else {
                        /* SA suggest apply -0.3db to audio/speech path
                         * with DL gain set to half,
                         * 0xFFFF = 0dB -> 0x8000 = 0dB when 96k, 192k
                         */
                        dl_src2_con1 = 0x7ba70000;
                }

                /* turn on down-link gain */
                dl_src2_con0 = dl_src2_con0 | (0x01 << 1);

                regmap_write(afe->regmap, AFE_ADDA_DL_SRC2_CON0, dl_src2_con0);
                regmap_write(afe->regmap, AFE_ADDA_DL_SRC2_CON1, dl_src2_con1);
        } else {
                unsigned int voice_mode = 0;
                unsigned int ul_src_con0 = 0;   /* default value */

                /* Using Internal ADC */
                regmap_update_bits(afe->regmap,
                                   AFE_ADDA_TOP_CON0,
                                   0x1 << 0,
                                   0x0 << 0);

                voice_mode = mtk_adda_ul_rate_transform(afe, rate);

                ul_src_con0 |= (voice_mode << 17) & (0x7 << 17);

                /* up8x txif sat on */
                regmap_write(afe->regmap, AFE_ADDA_NEWIF_CFG0, 0x03F87201);

                if (rate >= 96000) {    /* hires */
                        /* use hires format [1 0 23] */
                        regmap_update_bits(afe->regmap,
                                           AFE_ADDA_NEWIF_CFG0,
                                           0x1 << 5,
                                           0x1 << 5);

                        regmap_update_bits(afe->regmap,
                                           AFE_ADDA_NEWIF_CFG2,
                                           0xf << 28,
                                           voice_mode << 28);
                } else {        /* normal 8~48k */
                        /* use fixed 260k anc path */
                        regmap_update_bits(afe->regmap,
                                           AFE_ADDA_NEWIF_CFG2,
                                           0xf << 28,
                                           8 << 28);

                        /* ul_use_cic_out */
                        ul_src_con0 |= 0x1 << 20;
                }

                regmap_update_bits(afe->regmap,
                                   AFE_ADDA_NEWIF_CFG2,
                                   0xf << 28,
                                   8 << 28);

                regmap_update_bits(afe->regmap,
                                   AFE_ADDA_UL_SRC_CON0,
                                   0xfffffffe,
                                   ul_src_con0);
        }

        return 0;
}

static const struct snd_soc_dai_ops mtk_dai_adda_ops = {
        .hw_params = mtk_dai_adda_hw_params,
};

/* dai driver */
#define MTK_ADDA_PLAYBACK_RATES (SNDRV_PCM_RATE_8000_48000 |\
                                 SNDRV_PCM_RATE_96000 |\
                                 SNDRV_PCM_RATE_192000)

#define MTK_ADDA_CAPTURE_RATES (SNDRV_PCM_RATE_8000 |\
                                SNDRV_PCM_RATE_16000 |\
                                SNDRV_PCM_RATE_32000 |\
                                SNDRV_PCM_RATE_48000 |\
                                SNDRV_PCM_RATE_96000 |\
                                SNDRV_PCM_RATE_192000)

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

static struct snd_soc_dai_driver mtk_dai_adda_driver[] = {
        {
                .name = "ADDA",
                .id = MT6797_DAI_ADDA,
                .playback = {
                        .stream_name = "ADDA Playback",
                        .channels_min = 1,
                        .channels_max = 2,
                        .rates = MTK_ADDA_PLAYBACK_RATES,
                        .formats = MTK_ADDA_FORMATS,
                },
                .capture = {
                        .stream_name = "ADDA Capture",
                        .channels_min = 1,
                        .channels_max = 2,
                        .rates = MTK_ADDA_CAPTURE_RATES,
                        .formats = MTK_ADDA_FORMATS,
                },
                .ops = &mtk_dai_adda_ops,
        },
};

int mt6797_dai_adda_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_adda_driver;
        dai->num_dai_drivers = ARRAY_SIZE(mtk_dai_adda_driver);

        dai->dapm_widgets = mtk_dai_adda_widgets;
        dai->num_dapm_widgets = ARRAY_SIZE(mtk_dai_adda_widgets);
        dai->dapm_routes = mtk_dai_adda_routes;
        dai->num_dapm_routes = ARRAY_SIZE(mtk_dai_adda_routes);
        return 0;
}