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

#include <linux/delay.h>
#include <linux/dma-mapping.h>
#include <linux/io.h>
#include <linux/regmap.h>
#include <sound/soc.h>

#include "../common/mtk-afe-fe-dai.h"
#include "../common/mtk-afe-platform-driver.h"
#include "mt8186-afe-common.h"

static const char * const mt8186_sgen_mode_str[] = {
        "I0I1",   "I2",     "I3I4",   "I5I6",
        "I7I8",   "I9I22",  "I10I11", "I12I13",
        "I14I21", "I15I16", "I17I18", "I19I20",
        "I23I24", "I25I26", "I27I28", "I33",
        "I34I35", "I36I37", "I38I39", "I40I41",
        "I42I43", "I44I45", "I46I47", "I48I49",
        "I56I57", "I58I59", "I60I61", "I62I63",
        "O0O1",   "O2",     "O3O4",   "O5O6",
        "O7O8",   "O9O10",  "O11",    "O12",
        "O13O14", "O15O16", "O17O18", "O19O20",
        "O21O22", "O23O24", "O25",    "O28O29",
        "O34",    "O35",    "O32O33", "O36O37",
        "O38O39", "O30O31", "O40O41", "O42O43",
        "O44O45", "O46O47", "O48O49", "O50O51",
        "O58O59", "O60O61", "O62O63", "O64O65",
        "O66O67", "O68O69", "O26O27", "OFF",
};

static const int mt8186_sgen_mode_idx[] = {
        0, 2, 4, 6,
        8, 22, 10, 12,
        14, -1, 18, 20,
        24, 26, 28, 33,
        34, 36, 38, 40,
        42, 44, 46, 48,
        56, 58, 60, 62,
        128, 130, 132, 134,
        135, 138, 139, 140,
        142, 144, 166, 148,
        150, 152, 153, 156,
        162, 163, 160, 164,
        166, -1, 168, 170,
        172, 174, 176, 178,
        186, 188, 190, 192,
        194, 196, -1, -1,
};

static const char * const mt8186_sgen_rate_str[] = {
        "8K", "11K", "12K", "16K",
        "22K", "24K", "32K", "44K",
        "48K", "88k", "96k", "176k",
        "192k"
};

static const int mt8186_sgen_rate_idx[] = {
        0, 1, 2, 4,
        5, 6, 8, 9,
        10, 11, 12, 13,
        14
};

/* this order must match reg bit amp_div_ch1/2 */
static const char * const mt8186_sgen_amp_str[] = {
        "1/128", "1/64", "1/32", "1/16", "1/8", "1/4", "1/2", "1" };

static int mt8186_sgen_get(struct snd_kcontrol *kcontrol,
                           struct snd_ctl_elem_value *ucontrol)
{
        struct snd_soc_component *cmpnt = snd_kcontrol_chip(kcontrol);
        struct mtk_base_afe *afe = snd_soc_component_get_drvdata(cmpnt);
        struct mt8186_afe_private *afe_priv = afe->platform_priv;

        ucontrol->value.integer.value[0] = afe_priv->sgen_mode;

        return 0;
}

static int mt8186_sgen_set(struct snd_kcontrol *kcontrol,
                           struct snd_ctl_elem_value *ucontrol)
{
        struct snd_soc_component *cmpnt = snd_kcontrol_chip(kcontrol);
        struct mtk_base_afe *afe = snd_soc_component_get_drvdata(cmpnt);
        struct mt8186_afe_private *afe_priv = afe->platform_priv;
        struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
        int mode;
        int mode_idx;

        if (ucontrol->value.enumerated.item[0] >= e->items)
                return -EINVAL;

        mode = ucontrol->value.integer.value[0];
        mode_idx = mt8186_sgen_mode_idx[mode];

        dev_dbg(afe->dev, "%s(), mode %d, mode_idx %d\n",
                __func__, mode, mode_idx);

        if (mode == afe_priv->sgen_mode)
                return 0;

        if (mode_idx >= 0) {
                regmap_update_bits(afe->regmap, AFE_SINEGEN_CON2,
                                   INNER_LOOP_BACK_MODE_MASK_SFT,
                                   mode_idx << INNER_LOOP_BACK_MODE_SFT);
                regmap_update_bits(afe->regmap, AFE_SINEGEN_CON0,
                                   DAC_EN_MASK_SFT, BIT(DAC_EN_SFT));
        } else {
                /* disable sgen */
                regmap_update_bits(afe->regmap, AFE_SINEGEN_CON0,
                                   DAC_EN_MASK_SFT, 0);
                regmap_update_bits(afe->regmap, AFE_SINEGEN_CON2,
                                   INNER_LOOP_BACK_MODE_MASK_SFT,
                                   0x3f << INNER_LOOP_BACK_MODE_SFT);
        }

        afe_priv->sgen_mode = mode;

        return 1;
}

static int mt8186_sgen_rate_get(struct snd_kcontrol *kcontrol,
                                struct snd_ctl_elem_value *ucontrol)
{
        struct snd_soc_component *cmpnt = snd_kcontrol_chip(kcontrol);
        struct mtk_base_afe *afe = snd_soc_component_get_drvdata(cmpnt);
        struct mt8186_afe_private *afe_priv = afe->platform_priv;

        ucontrol->value.integer.value[0] = afe_priv->sgen_rate;

        return 0;
}

static int mt8186_sgen_rate_set(struct snd_kcontrol *kcontrol,
                                struct snd_ctl_elem_value *ucontrol)
{
        struct snd_soc_component *cmpnt = snd_kcontrol_chip(kcontrol);
        struct mtk_base_afe *afe = snd_soc_component_get_drvdata(cmpnt);
        struct mt8186_afe_private *afe_priv = afe->platform_priv;
        struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
        int rate;

        if (ucontrol->value.enumerated.item[0] >= e->items)
                return -EINVAL;

        rate = ucontrol->value.integer.value[0];

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

        if (rate == afe_priv->sgen_rate)
                return 0;

        regmap_update_bits(afe->regmap, AFE_SINEGEN_CON0,
                           SINE_MODE_CH1_MASK_SFT,
                           mt8186_sgen_rate_idx[rate] << SINE_MODE_CH1_SFT);

        regmap_update_bits(afe->regmap, AFE_SINEGEN_CON0,
                           SINE_MODE_CH2_MASK_SFT,
                           mt8186_sgen_rate_idx[rate] << SINE_MODE_CH2_SFT);

        afe_priv->sgen_rate = rate;

        return 1;
}

static int mt8186_sgen_amplitude_get(struct snd_kcontrol *kcontrol,
                                     struct snd_ctl_elem_value *ucontrol)
{
        struct snd_soc_component *cmpnt = snd_kcontrol_chip(kcontrol);
        struct mtk_base_afe *afe = snd_soc_component_get_drvdata(cmpnt);
        struct mt8186_afe_private *afe_priv = afe->platform_priv;

        ucontrol->value.integer.value[0] = afe_priv->sgen_amplitude;
        return 0;
}

static int mt8186_sgen_amplitude_set(struct snd_kcontrol *kcontrol,
                                     struct snd_ctl_elem_value *ucontrol)
{
        struct snd_soc_component *cmpnt = snd_kcontrol_chip(kcontrol);
        struct mtk_base_afe *afe = snd_soc_component_get_drvdata(cmpnt);
        struct mt8186_afe_private *afe_priv = afe->platform_priv;
        struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
        int amplitude;

        if (ucontrol->value.enumerated.item[0] >= e->items)
                return -EINVAL;

        amplitude = ucontrol->value.integer.value[0];
        if (amplitude > AMP_DIV_CH1_MASK) {
                dev_err(afe->dev, "%s(), amplitude %d invalid\n",
                        __func__, amplitude);
                return -EINVAL;
        }

        dev_dbg(afe->dev, "%s(), amplitude %d\n", __func__, amplitude);

        if (amplitude == afe_priv->sgen_amplitude)
                return 0;

        regmap_update_bits(afe->regmap, AFE_SINEGEN_CON0,
                           AMP_DIV_CH1_MASK_SFT,
                           amplitude << AMP_DIV_CH1_SFT);
        regmap_update_bits(afe->regmap, AFE_SINEGEN_CON0,
                           AMP_DIV_CH2_MASK_SFT,
                           amplitude << AMP_DIV_CH2_SFT);

        afe_priv->sgen_amplitude = amplitude;

        return 1;
}

static const struct soc_enum mt8186_afe_sgen_enum[] = {
        SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(mt8186_sgen_mode_str),
                            mt8186_sgen_mode_str),
        SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(mt8186_sgen_rate_str),
                            mt8186_sgen_rate_str),
        SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(mt8186_sgen_amp_str),
                            mt8186_sgen_amp_str),
};

static const struct snd_kcontrol_new mt8186_afe_sgen_controls[] = {
        SOC_ENUM_EXT("Audio_SineGen_Switch", mt8186_afe_sgen_enum[0],
                     mt8186_sgen_get, mt8186_sgen_set),
        SOC_ENUM_EXT("Audio_SineGen_SampleRate", mt8186_afe_sgen_enum[1],
                     mt8186_sgen_rate_get, mt8186_sgen_rate_set),
        SOC_ENUM_EXT("Audio_SineGen_Amplitude", mt8186_afe_sgen_enum[2],
                     mt8186_sgen_amplitude_get, mt8186_sgen_amplitude_set),
        SOC_SINGLE("Audio_SineGen_Mute_Ch1", AFE_SINEGEN_CON0,
                   MUTE_SW_CH1_MASK_SFT, MUTE_SW_CH1_MASK, 0),
        SOC_SINGLE("Audio_SineGen_Mute_Ch2", AFE_SINEGEN_CON0,
                   MUTE_SW_CH2_MASK_SFT, MUTE_SW_CH2_MASK, 0),
        SOC_SINGLE("Audio_SineGen_Freq_Div_Ch1", AFE_SINEGEN_CON0,
                   FREQ_DIV_CH1_SFT, FREQ_DIV_CH1_MASK, 0),
        SOC_SINGLE("Audio_SineGen_Freq_Div_Ch2", AFE_SINEGEN_CON0,
                   FREQ_DIV_CH2_SFT, FREQ_DIV_CH2_MASK, 0),
};

int mt8186_add_misc_control(struct snd_soc_component *component)
{
        snd_soc_add_component_controls(component,
                                       mt8186_afe_sgen_controls,
                                       ARRAY_SIZE(mt8186_afe_sgen_controls));

        return 0;
}