root/sound/soc/tegra/tegra210_mbdrc.c
// SPDX-License-Identifier: GPL-2.0-only
//
// tegra210_mbdrc.c - Tegra210 MBDRC driver
//
// Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.

#include <linux/device.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/of_address.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <sound/core.h>
#include <sound/soc.h>
#include <sound/tlv.h>

#include "tegra210_mbdrc.h"
#include "tegra210_ope.h"

#define MBDRC_FILTER_REG(reg, id)                                           \
        ((reg) + ((id) * TEGRA210_MBDRC_FILTER_PARAM_STRIDE))

#define MBDRC_FILTER_REG_DEFAULTS(id)                                       \
        { MBDRC_FILTER_REG(TEGRA210_MBDRC_IIR_CFG, id), 0x00000005},        \
        { MBDRC_FILTER_REG(TEGRA210_MBDRC_IN_ATTACK, id), 0x3e48590c},      \
        { MBDRC_FILTER_REG(TEGRA210_MBDRC_IN_RELEASE, id), 0x08414e9f},     \
        { MBDRC_FILTER_REG(TEGRA210_MBDRC_FAST_ATTACK, id), 0x7fffffff},    \
        { MBDRC_FILTER_REG(TEGRA210_MBDRC_IN_THRESHOLD, id), 0x06145082},   \
        { MBDRC_FILTER_REG(TEGRA210_MBDRC_OUT_THRESHOLD, id), 0x060d379b},  \
        { MBDRC_FILTER_REG(TEGRA210_MBDRC_RATIO_1ST, id), 0x0000a000},      \
        { MBDRC_FILTER_REG(TEGRA210_MBDRC_RATIO_2ND, id), 0x00002000},      \
        { MBDRC_FILTER_REG(TEGRA210_MBDRC_RATIO_3RD, id), 0x00000b33},      \
        { MBDRC_FILTER_REG(TEGRA210_MBDRC_RATIO_4TH, id), 0x00000800},      \
        { MBDRC_FILTER_REG(TEGRA210_MBDRC_RATIO_5TH, id), 0x0000019a},      \
        { MBDRC_FILTER_REG(TEGRA210_MBDRC_MAKEUP_GAIN, id), 0x00000002},    \
        { MBDRC_FILTER_REG(TEGRA210_MBDRC_INIT_GAIN, id), 0x00066666},      \
        { MBDRC_FILTER_REG(TEGRA210_MBDRC_GAIN_ATTACK, id), 0x00d9ba0e},    \
        { MBDRC_FILTER_REG(TEGRA210_MBDRC_GAIN_RELEASE, id), 0x3e48590c},   \
        { MBDRC_FILTER_REG(TEGRA210_MBDRC_FAST_RELEASE, id), 0x7ffff26a},   \
        { MBDRC_FILTER_REG(TEGRA210_MBDRC_CFG_RAM_CTRL, id), 0x4000}

static const struct reg_default tegra210_mbdrc_reg_defaults[] = {
        { TEGRA210_MBDRC_CFG, 0x0030de51},
        { TEGRA210_MBDRC_CHANNEL_MASK, 0x00000003},
        { TEGRA210_MBDRC_FAST_FACTOR, 0x30000800},

        MBDRC_FILTER_REG_DEFAULTS(0),
        MBDRC_FILTER_REG_DEFAULTS(1),
        MBDRC_FILTER_REG_DEFAULTS(2),
};

/* Default MBDRC parameters */
static const struct tegra210_mbdrc_config mbdrc_init_config = {
        .mode                   = 0, /* Bypass */
        .rms_off                = 48,
        .peak_rms_mode          = 1, /* PEAK */
        .filter_structure       = 0, /* All-pass tree */
        .shift_ctrl             = 30,
        .frame_size             = 32,
        .channel_mask           = 0x3,
        .fa_factor              = 2048,
        .fr_factor              = 14747,

        .band_params[MBDRC_LOW_BAND] = {
                .band                   = MBDRC_LOW_BAND,
                .iir_stages             = 5,
                .in_attack_tc           = 1044928780,
                .in_release_tc          = 138497695,
                .fast_attack_tc         = 2147483647,
                .in_threshold           = {130, 80, 20, 6},
                .out_threshold          = {155, 55, 13, 6},
                .ratio                  = {40960, 8192, 2867, 2048, 410},
                .makeup_gain            = 4,
                .gain_init              = 419430,
                .gain_attack_tc         = 14268942,
                .gain_release_tc        = 1440547090,
                .fast_release_tc        = 2147480170,

                .biquad_params  = {
                        /*
                         * Gains:
                         *
                         * b0, b1, a0,
                         * a1, a2,
                         */

                        /* Band-0 */
                        961046798, -2030431983, 1073741824,
                        2030431983, -961046798,
                        /* Band-1 */
                        1030244425, -2099481453, 1073741824,
                        2099481453, -1030244425,
                        /* Band-2 */
                        1067169294, -2136327263, 1073741824,
                        2136327263, -1067169294,
                        /* Band-3 */
                        434951949, -1306567134, 1073741824,
                        1306567134, -434951949,
                        /* Band-4 */
                        780656019, -1605955641, 1073741824,
                        1605955641, -780656019,
                        /* Band-5 */
                        1024497031, -1817128152, 1073741824,
                        1817128152, -1024497031,
                        /* Band-6 */
                        1073741824, 0, 0,
                        0, 0,
                        /* Band-7 */
                        1073741824, 0, 0,
                        0, 0,
                }
        },

        .band_params[MBDRC_MID_BAND] = {
                .band                   = MBDRC_MID_BAND,
                .iir_stages             = 5,
                .in_attack_tc           = 1581413104,
                .in_release_tc          = 35494783,
                .fast_attack_tc         = 2147483647,
                .in_threshold           = {130, 50, 30, 6},
                .out_threshold          = {106, 50, 30, 13},
                .ratio                  = {40960, 2867, 4096, 2867, 410},
                .makeup_gain            = 6,
                .gain_init              = 419430,
                .gain_attack_tc         = 4766887,
                .gain_release_tc        = 1044928780,
                .fast_release_tc        = 2147480170,

                .biquad_params = {
                        /*
                         * Gains:
                         *
                         * b0, b1, a0,
                         * a1, a2,
                         */

                        /* Band-0 */
                        -1005668963, 1073741824, 0,
                        1005668963, 0,
                        /* Band-1 */
                        998437058, -2067742187, 1073741824,
                        2067742187, -998437058,
                        /* Band-2 */
                        1051963422, -2121153948, 1073741824,
                        2121153948, -1051963422,
                        /* Band-3 */
                        434951949, -1306567134, 1073741824,
                        1306567134, -434951949,
                        /* Band-4 */
                        780656019, -1605955641, 1073741824,
                        1605955641, -780656019,
                        /* Band-5 */
                        1024497031, -1817128152, 1073741824,
                        1817128152, -1024497031,
                        /* Band-6 */
                        1073741824, 0, 0,
                        0, 0,
                        /* Band-7 */
                        1073741824, 0, 0,
                        0, 0,
                }
        },

        .band_params[MBDRC_HIGH_BAND] = {
                .band                   = MBDRC_HIGH_BAND,
                .iir_stages             = 5,
                .in_attack_tc           = 2144750688,
                .in_release_tc          = 70402888,
                .fast_attack_tc         = 2147483647,
                .in_threshold           = {130, 50, 30, 6},
                .out_threshold          = {106, 50, 30, 13},
                .ratio                  = {40960, 2867, 4096, 2867, 410},
                .makeup_gain            = 6,
                .gain_init              = 419430,
                .gain_attack_tc         = 4766887,
                .gain_release_tc        = 1044928780,
                .fast_release_tc        = 2147480170,

                .biquad_params = {
                        /*
                         * Gains:
                         *
                         * b0, b1, a0,
                         * a1, a2,
                         */

                        /* Band-0 */
                        1073741824, 0, 0,
                        0, 0,
                        /* Band-1 */
                        1073741824, 0, 0,
                        0, 0,
                        /* Band-2 */
                        1073741824, 0, 0,
                        0, 0,
                        /* Band-3 */
                        -619925131, 1073741824, 0,
                        619925131, 0,
                        /* Band-4 */
                        606839335, -1455425976, 1073741824,
                        1455425976, -606839335,
                        /* Band-5 */
                        917759617, -1724690840, 1073741824,
                        1724690840, -917759617,
                        /* Band-6 */
                        1073741824, 0, 0,
                        0, 0,
                        /* Band-7 */
                        1073741824, 0, 0,
                        0, 0,
                }
        }
};

static void tegra210_mbdrc_write_ram(struct regmap *regmap, unsigned int reg_ctrl,
                                     unsigned int reg_data, unsigned int ram_offset,
                                     unsigned int *data, size_t size)
{
        unsigned int val;
        unsigned int i;

        val = ram_offset & TEGRA210_MBDRC_RAM_CTRL_RAM_ADDR_MASK;
        val |= TEGRA210_MBDRC_RAM_CTRL_ADDR_INIT_EN;
        val |= TEGRA210_MBDRC_RAM_CTRL_SEQ_ACCESS_EN;
        val |= TEGRA210_MBDRC_RAM_CTRL_RW_WRITE;

        regmap_write(regmap, reg_ctrl, val);

        for (i = 0; i < size; i++)
                regmap_write(regmap, reg_data, data[i]);
}

static int tegra210_mbdrc_get(struct snd_kcontrol *kcontrol,
                              struct snd_ctl_elem_value *ucontrol)
{
        struct soc_mixer_control *mc =
                (struct soc_mixer_control *)kcontrol->private_value;
        struct snd_soc_component *cmpnt = snd_kcontrol_chip(kcontrol);
        struct tegra210_ope *ope = snd_soc_component_get_drvdata(cmpnt);
        unsigned int val;

        regmap_read(ope->mbdrc_regmap, mc->reg, &val);

        ucontrol->value.integer.value[0] = (val >> mc->shift) & mc->max;

        return 0;
}

static int tegra210_mbdrc_put(struct snd_kcontrol *kcontrol,
                              struct snd_ctl_elem_value *ucontrol)
{
        struct soc_mixer_control *mc =
                (struct soc_mixer_control *)kcontrol->private_value;
        struct snd_soc_component *cmpnt = snd_kcontrol_chip(kcontrol);
        struct tegra210_ope *ope = snd_soc_component_get_drvdata(cmpnt);
        unsigned int val = ucontrol->value.integer.value[0];
        bool change = false;

        val = val << mc->shift;

        regmap_update_bits_check(ope->mbdrc_regmap, mc->reg,
                                 (mc->max << mc->shift), val, &change);

        return change ? 1 : 0;
}

static int tegra210_mbdrc_get_enum(struct snd_kcontrol *kcontrol,
                                   struct snd_ctl_elem_value *ucontrol)
{
        struct snd_soc_component *cmpnt = snd_kcontrol_chip(kcontrol);
        struct tegra210_ope *ope = snd_soc_component_get_drvdata(cmpnt);
        struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
        unsigned int val;

        regmap_read(ope->mbdrc_regmap, e->reg, &val);

        ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & e->mask;

        return 0;
}

static int tegra210_mbdrc_put_enum(struct snd_kcontrol *kcontrol,
                                   struct snd_ctl_elem_value *ucontrol)
{
        struct snd_soc_component *cmpnt = snd_kcontrol_chip(kcontrol);
        struct tegra210_ope *ope = snd_soc_component_get_drvdata(cmpnt);
        struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
        bool change = false;
        unsigned int val;
        unsigned int mask;

        if (ucontrol->value.enumerated.item[0] > e->items - 1)
                return -EINVAL;

        val = ucontrol->value.enumerated.item[0] << e->shift_l;
        mask = e->mask << e->shift_l;

        regmap_update_bits_check(ope->mbdrc_regmap, e->reg, mask, val,
                                 &change);

        return change ? 1 : 0;
}

static int tegra210_mbdrc_band_params_get(struct snd_kcontrol *kcontrol,
                                          struct snd_ctl_elem_value *ucontrol)
{
        struct tegra_soc_bytes *params = (void *)kcontrol->private_value;
        struct snd_soc_component *cmpnt = snd_kcontrol_chip(kcontrol);
        struct tegra210_ope *ope = snd_soc_component_get_drvdata(cmpnt);
        u32 *data = (u32 *)ucontrol->value.bytes.data;
        u32 regs = params->soc.base;
        u32 mask = params->soc.mask;
        u32 shift = params->shift;
        unsigned int i;

        for (i = 0; i < params->soc.num_regs; i++, regs += cmpnt->val_bytes) {
                regmap_read(ope->mbdrc_regmap, regs, &data[i]);

                data[i] = ((data[i] & mask) >> shift);
        }

        return 0;
}

static int tegra210_mbdrc_band_params_put(struct snd_kcontrol *kcontrol,
                                          struct snd_ctl_elem_value *ucontrol)
{
        struct tegra_soc_bytes *params = (void *)kcontrol->private_value;
        struct snd_soc_component *cmpnt = snd_kcontrol_chip(kcontrol);
        struct tegra210_ope *ope = snd_soc_component_get_drvdata(cmpnt);
        u32 *data = (u32 *)ucontrol->value.bytes.data;
        u32 regs = params->soc.base;
        u32 mask = params->soc.mask;
        u32 shift = params->shift;
        bool change = false;
        unsigned int i;

        for (i = 0; i < params->soc.num_regs; i++, regs += cmpnt->val_bytes) {
                bool update = false;

                regmap_update_bits_check(ope->mbdrc_regmap, regs, mask,
                                         data[i] << shift, &update);

                change |= update;
        }

        return change ? 1 : 0;
}

static int tegra210_mbdrc_threshold_get(struct snd_kcontrol *kcontrol,
                                        struct snd_ctl_elem_value *ucontrol)
{
        struct tegra_soc_bytes *params = (void *)kcontrol->private_value;
        struct snd_soc_component *cmpnt = snd_kcontrol_chip(kcontrol);
        struct tegra210_ope *ope = snd_soc_component_get_drvdata(cmpnt);
        u32 *data = (u32 *)ucontrol->value.bytes.data;
        u32 regs = params->soc.base;
        u32 num_regs = params->soc.num_regs;
        u32 val;
        unsigned int i;

        for (i = 0; i < num_regs; i += 4, regs += cmpnt->val_bytes) {
                regmap_read(ope->mbdrc_regmap, regs, &val);

                data[i] = (val & TEGRA210_MBDRC_THRESH_1ST_MASK) >>
                          TEGRA210_MBDRC_THRESH_1ST_SHIFT;
                data[i + 1] = (val & TEGRA210_MBDRC_THRESH_2ND_MASK) >>
                              TEGRA210_MBDRC_THRESH_2ND_SHIFT;
                data[i + 2] = (val & TEGRA210_MBDRC_THRESH_3RD_MASK) >>
                              TEGRA210_MBDRC_THRESH_3RD_SHIFT;
                data[i + 3] = (val & TEGRA210_MBDRC_THRESH_4TH_MASK) >>
                              TEGRA210_MBDRC_THRESH_4TH_SHIFT;
        }

        return 0;
}

static int tegra210_mbdrc_threshold_put(struct snd_kcontrol *kcontrol,
                                        struct snd_ctl_elem_value *ucontrol)
{
        struct tegra_soc_bytes *params = (void *)kcontrol->private_value;
        struct snd_soc_component *cmpnt = snd_kcontrol_chip(kcontrol);
        struct tegra210_ope *ope = snd_soc_component_get_drvdata(cmpnt);
        u32 *data = (u32 *)ucontrol->value.bytes.data;
        u32 regs = params->soc.base;
        u32 num_regs = params->soc.num_regs;
        bool change = false;
        unsigned int i;

        for (i = 0; i < num_regs; i += 4, regs += cmpnt->val_bytes) {
                bool update = false;

                data[i] = (((data[i] >> TEGRA210_MBDRC_THRESH_1ST_SHIFT) &
                            TEGRA210_MBDRC_THRESH_1ST_MASK) |
                           ((data[i + 1] >> TEGRA210_MBDRC_THRESH_2ND_SHIFT) &
                            TEGRA210_MBDRC_THRESH_2ND_MASK) |
                           ((data[i + 2] >> TEGRA210_MBDRC_THRESH_3RD_SHIFT) &
                            TEGRA210_MBDRC_THRESH_3RD_MASK) |
                           ((data[i + 3] >> TEGRA210_MBDRC_THRESH_4TH_SHIFT) &
                            TEGRA210_MBDRC_THRESH_4TH_MASK));

                regmap_update_bits_check(ope->mbdrc_regmap, regs, 0xffffffff,
                                         data[i], &update);

                change |= update;
        }

        return change ? 1 : 0;
}

static int tegra210_mbdrc_biquad_coeffs_get(struct snd_kcontrol *kcontrol,
        struct snd_ctl_elem_value *ucontrol)
{
        struct tegra_soc_bytes *params = (void *)kcontrol->private_value;
        struct snd_soc_component *cmpnt = snd_kcontrol_chip(kcontrol);
        u32 *data = (u32 *)ucontrol->value.bytes.data;

        memset(data, 0, params->soc.num_regs * cmpnt->val_bytes);

        return 0;
}

static int tegra210_mbdrc_biquad_coeffs_put(struct snd_kcontrol *kcontrol,
                                            struct snd_ctl_elem_value *ucontrol)
{
        struct tegra_soc_bytes *params = (void *)kcontrol->private_value;
        struct snd_soc_component *cmpnt = snd_kcontrol_chip(kcontrol);
        struct tegra210_ope *ope = snd_soc_component_get_drvdata(cmpnt);
        u32 reg_ctrl = params->soc.base;
        u32 reg_data = reg_ctrl + cmpnt->val_bytes;
        u32 *data = (u32 *)ucontrol->value.bytes.data;

        tegra210_mbdrc_write_ram(ope->mbdrc_regmap, reg_ctrl, reg_data,
                                 params->shift, data, params->soc.num_regs);

        return 1;
}

static int tegra210_mbdrc_param_info(struct snd_kcontrol *kcontrol,
                                     struct snd_ctl_elem_info *uinfo)
{
        struct soc_bytes *params = (void *)kcontrol->private_value;

        uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
        uinfo->count = params->num_regs * sizeof(u32);

        return 0;
}

static int tegra210_mbdrc_vol_get(struct snd_kcontrol *kcontrol,
                                  struct snd_ctl_elem_value *ucontrol)
{
        struct soc_mixer_control *mc =
                (struct soc_mixer_control *)kcontrol->private_value;
        struct snd_soc_component *cmpnt = snd_kcontrol_chip(kcontrol);
        struct tegra210_ope *ope = snd_soc_component_get_drvdata(cmpnt);
        int val;

        regmap_read(ope->mbdrc_regmap, mc->reg, &val);

        ucontrol->value.integer.value[0] =
                ((val >> mc->shift) - TEGRA210_MBDRC_MASTER_VOL_MIN);

        return 0;
}

static int tegra210_mbdrc_vol_put(struct snd_kcontrol *kcontrol,
                                  struct snd_ctl_elem_value *ucontrol)
{
        struct soc_mixer_control *mc =
                (struct soc_mixer_control *)kcontrol->private_value;
        struct snd_soc_component *cmpnt = snd_kcontrol_chip(kcontrol);
        struct tegra210_ope *ope = snd_soc_component_get_drvdata(cmpnt);
        int val = ucontrol->value.integer.value[0];
        bool change = false;

        val += TEGRA210_MBDRC_MASTER_VOL_MIN;

        regmap_update_bits_check(ope->mbdrc_regmap, mc->reg,
                                 mc->max << mc->shift, val << mc->shift,
                                 &change);

        regmap_read(ope->mbdrc_regmap, mc->reg, &val);

        return change ? 1 : 0;
}

static const char * const tegra210_mbdrc_mode_text[] = {
        "Bypass", "Fullband", "Dualband", "Multiband"
};

static const struct soc_enum tegra210_mbdrc_mode_enum =
        SOC_ENUM_SINGLE(TEGRA210_MBDRC_CFG, TEGRA210_MBDRC_CFG_MBDRC_MODE_SHIFT,
                        4, tegra210_mbdrc_mode_text);

static const char * const tegra210_mbdrc_peak_rms_text[] = {
        "Peak", "RMS"
};

static const struct soc_enum tegra210_mbdrc_peak_rms_enum =
        SOC_ENUM_SINGLE(TEGRA210_MBDRC_CFG, TEGRA210_MBDRC_CFG_PEAK_RMS_SHIFT,
                        2, tegra210_mbdrc_peak_rms_text);

static const char * const tegra210_mbdrc_filter_structure_text[] = {
        "All-pass-tree", "Flexible"
};

static const struct soc_enum tegra210_mbdrc_filter_structure_enum =
        SOC_ENUM_SINGLE(TEGRA210_MBDRC_CFG,
                        TEGRA210_MBDRC_CFG_FILTER_STRUCTURE_SHIFT, 2,
                        tegra210_mbdrc_filter_structure_text);

static const char * const tegra210_mbdrc_frame_size_text[] = {
        "N1", "N2", "N4", "N8", "N16", "N32", "N64"
};

static const struct soc_enum tegra210_mbdrc_frame_size_enum =
        SOC_ENUM_SINGLE(TEGRA210_MBDRC_CFG, TEGRA210_MBDRC_CFG_FRAME_SIZE_SHIFT,
                        7, tegra210_mbdrc_frame_size_text);

#define TEGRA_MBDRC_BYTES_EXT(xname, xbase, xregs, xshift, xmask, xinfo)    \
        TEGRA_SOC_BYTES_EXT(xname, xbase, xregs, xshift, xmask,             \
                            tegra210_mbdrc_band_params_get,                 \
                            tegra210_mbdrc_band_params_put,                 \
                            tegra210_mbdrc_param_info)

#define TEGRA_MBDRC_BAND_BYTES_EXT(xname, xbase, xshift, xmask, xinfo)      \
        TEGRA_MBDRC_BYTES_EXT(xname, xbase, TEGRA210_MBDRC_FILTER_COUNT,    \
                              xshift, xmask, xinfo)

static const DECLARE_TLV_DB_MINMAX(mdbrc_vol_tlv, -25600, 25500);

static const struct snd_kcontrol_new tegra210_mbdrc_controls[] = {
        SOC_ENUM_EXT("MBDRC Peak RMS Mode", tegra210_mbdrc_peak_rms_enum,
                     tegra210_mbdrc_get_enum, tegra210_mbdrc_put_enum),

        SOC_ENUM_EXT("MBDRC Filter Structure",
                     tegra210_mbdrc_filter_structure_enum,
                     tegra210_mbdrc_get_enum, tegra210_mbdrc_put_enum),

        SOC_ENUM_EXT("MBDRC Frame Size", tegra210_mbdrc_frame_size_enum,
                     tegra210_mbdrc_get_enum, tegra210_mbdrc_put_enum),

        SOC_ENUM_EXT("MBDRC Mode", tegra210_mbdrc_mode_enum,
                     tegra210_mbdrc_get_enum, tegra210_mbdrc_put_enum),

        SOC_SINGLE_EXT("MBDRC RMS Offset", TEGRA210_MBDRC_CFG,
                       TEGRA210_MBDRC_CFG_RMS_OFFSET_SHIFT, 0x1ff, 0,
                       tegra210_mbdrc_get, tegra210_mbdrc_put),

        SOC_SINGLE_EXT("MBDRC Shift Control", TEGRA210_MBDRC_CFG,
                       TEGRA210_MBDRC_CFG_SHIFT_CTRL_SHIFT, 0x1f, 0,
                       tegra210_mbdrc_get, tegra210_mbdrc_put),

        SOC_SINGLE_EXT("MBDRC Fast Attack Factor", TEGRA210_MBDRC_FAST_FACTOR,
                       TEGRA210_MBDRC_FAST_FACTOR_ATTACK_SHIFT, 0xffff, 0,
                       tegra210_mbdrc_get, tegra210_mbdrc_put),

        SOC_SINGLE_EXT("MBDRC Fast Release Factor", TEGRA210_MBDRC_FAST_FACTOR,
                       TEGRA210_MBDRC_FAST_FACTOR_RELEASE_SHIFT, 0xffff, 0,
                       tegra210_mbdrc_get, tegra210_mbdrc_put),

        SOC_SINGLE_RANGE_EXT_TLV("MBDRC Master Volume",
                                 TEGRA210_MBDRC_MASTER_VOL,
                                 TEGRA210_MBDRC_MASTER_VOL_SHIFT,
                                 0, 0x1ff, 0,
                                 tegra210_mbdrc_vol_get, tegra210_mbdrc_vol_put,
                                 mdbrc_vol_tlv),

        TEGRA_SOC_BYTES_EXT("MBDRC IIR Stages", TEGRA210_MBDRC_IIR_CFG,
                            TEGRA210_MBDRC_FILTER_COUNT,
                            TEGRA210_MBDRC_IIR_CFG_NUM_STAGES_SHIFT,
                            TEGRA210_MBDRC_IIR_CFG_NUM_STAGES_MASK,
                            tegra210_mbdrc_band_params_get,
                            tegra210_mbdrc_band_params_put,
                            tegra210_mbdrc_param_info),

        TEGRA_SOC_BYTES_EXT("MBDRC In Attack Time Const", TEGRA210_MBDRC_IN_ATTACK,
                            TEGRA210_MBDRC_FILTER_COUNT,
                            TEGRA210_MBDRC_IN_ATTACK_TC_SHIFT,
                            TEGRA210_MBDRC_IN_ATTACK_TC_MASK,
                            tegra210_mbdrc_band_params_get,
                            tegra210_mbdrc_band_params_put,
                            tegra210_mbdrc_param_info),

        TEGRA_SOC_BYTES_EXT("MBDRC In Release Time Const", TEGRA210_MBDRC_IN_RELEASE,
                            TEGRA210_MBDRC_FILTER_COUNT,
                            TEGRA210_MBDRC_IN_RELEASE_TC_SHIFT,
                            TEGRA210_MBDRC_IN_RELEASE_TC_MASK,
                            tegra210_mbdrc_band_params_get,
                            tegra210_mbdrc_band_params_put,
                            tegra210_mbdrc_param_info),

        TEGRA_SOC_BYTES_EXT("MBDRC Fast Attack Time Const", TEGRA210_MBDRC_FAST_ATTACK,
                            TEGRA210_MBDRC_FILTER_COUNT,
                            TEGRA210_MBDRC_FAST_ATTACK_TC_SHIFT,
                            TEGRA210_MBDRC_FAST_ATTACK_TC_MASK,
                            tegra210_mbdrc_band_params_get,
                            tegra210_mbdrc_band_params_put,
                            tegra210_mbdrc_param_info),

        TEGRA_SOC_BYTES_EXT("MBDRC In Threshold", TEGRA210_MBDRC_IN_THRESHOLD,
                            TEGRA210_MBDRC_FILTER_COUNT * 4, 0, 0xffffffff,
                            tegra210_mbdrc_threshold_get,
                            tegra210_mbdrc_threshold_put,
                            tegra210_mbdrc_param_info),

        TEGRA_SOC_BYTES_EXT("MBDRC Out Threshold", TEGRA210_MBDRC_OUT_THRESHOLD,
                            TEGRA210_MBDRC_FILTER_COUNT * 4, 0, 0xffffffff,
                            tegra210_mbdrc_threshold_get,
                            tegra210_mbdrc_threshold_put,
                            tegra210_mbdrc_param_info),

        TEGRA_SOC_BYTES_EXT("MBDRC Ratio", TEGRA210_MBDRC_RATIO_1ST,
                            TEGRA210_MBDRC_FILTER_COUNT * 5,
                            TEGRA210_MBDRC_RATIO_1ST_SHIFT, TEGRA210_MBDRC_RATIO_1ST_MASK,
                            tegra210_mbdrc_band_params_get,
                            tegra210_mbdrc_band_params_put,
                            tegra210_mbdrc_param_info),

        TEGRA_SOC_BYTES_EXT("MBDRC Makeup Gain", TEGRA210_MBDRC_MAKEUP_GAIN,
                            TEGRA210_MBDRC_FILTER_COUNT,
                            TEGRA210_MBDRC_MAKEUP_GAIN_SHIFT,
                            TEGRA210_MBDRC_MAKEUP_GAIN_MASK,
                            tegra210_mbdrc_band_params_get,
                            tegra210_mbdrc_band_params_put,
                            tegra210_mbdrc_param_info),

        TEGRA_SOC_BYTES_EXT("MBDRC Init Gain", TEGRA210_MBDRC_INIT_GAIN,
                            TEGRA210_MBDRC_FILTER_COUNT,
                            TEGRA210_MBDRC_INIT_GAIN_SHIFT,
                            TEGRA210_MBDRC_INIT_GAIN_MASK,
                            tegra210_mbdrc_band_params_get,
                            tegra210_mbdrc_band_params_put,
                            tegra210_mbdrc_param_info),

        TEGRA_SOC_BYTES_EXT("MBDRC Attack Gain", TEGRA210_MBDRC_GAIN_ATTACK,
                            TEGRA210_MBDRC_FILTER_COUNT,
                            TEGRA210_MBDRC_GAIN_ATTACK_SHIFT,
                            TEGRA210_MBDRC_GAIN_ATTACK_MASK,
                            tegra210_mbdrc_band_params_get,
                            tegra210_mbdrc_band_params_put,
                            tegra210_mbdrc_param_info),

        TEGRA_SOC_BYTES_EXT("MBDRC Release Gain", TEGRA210_MBDRC_GAIN_RELEASE,
                            TEGRA210_MBDRC_FILTER_COUNT,
                            TEGRA210_MBDRC_GAIN_RELEASE_SHIFT,
                            TEGRA210_MBDRC_GAIN_RELEASE_MASK,
                            tegra210_mbdrc_band_params_get,
                            tegra210_mbdrc_band_params_put,
                            tegra210_mbdrc_param_info),

        TEGRA_SOC_BYTES_EXT("MBDRC Fast Release Gain",
                            TEGRA210_MBDRC_FAST_RELEASE,
                            TEGRA210_MBDRC_FILTER_COUNT,
                            TEGRA210_MBDRC_FAST_RELEASE_SHIFT,
                            TEGRA210_MBDRC_FAST_RELEASE_MASK,
                            tegra210_mbdrc_band_params_get,
                            tegra210_mbdrc_band_params_put,
                            tegra210_mbdrc_param_info),

        TEGRA_SOC_BYTES_EXT("MBDRC Low Band Biquad Coeffs",
                            TEGRA210_MBDRC_CFG_RAM_CTRL,
                            TEGRA210_MBDRC_MAX_BIQUAD_STAGES * 5, 0, 0xffffffff,
                            tegra210_mbdrc_biquad_coeffs_get,
                            tegra210_mbdrc_biquad_coeffs_put,
                            tegra210_mbdrc_param_info),

        TEGRA_SOC_BYTES_EXT("MBDRC Mid Band Biquad Coeffs",
                            TEGRA210_MBDRC_CFG_RAM_CTRL +
                                TEGRA210_MBDRC_FILTER_PARAM_STRIDE,
                            TEGRA210_MBDRC_MAX_BIQUAD_STAGES * 5, 0, 0xffffffff,
                            tegra210_mbdrc_biquad_coeffs_get,
                            tegra210_mbdrc_biquad_coeffs_put,
                            tegra210_mbdrc_param_info),

        TEGRA_SOC_BYTES_EXT("MBDRC High Band Biquad Coeffs",
                            TEGRA210_MBDRC_CFG_RAM_CTRL +
                                (TEGRA210_MBDRC_FILTER_PARAM_STRIDE * 2),
                            TEGRA210_MBDRC_MAX_BIQUAD_STAGES * 5, 0, 0xffffffff,
                            tegra210_mbdrc_biquad_coeffs_get,
                            tegra210_mbdrc_biquad_coeffs_put,
                            tegra210_mbdrc_param_info),
};

static bool tegra210_mbdrc_wr_reg(struct device *dev, unsigned int reg)
{
        if (reg >= TEGRA210_MBDRC_IIR_CFG)
                reg -= ((reg - TEGRA210_MBDRC_IIR_CFG) %
                        (TEGRA210_MBDRC_FILTER_PARAM_STRIDE *
                         TEGRA210_MBDRC_FILTER_COUNT));

        switch (reg) {
        case TEGRA210_MBDRC_SOFT_RESET:
        case TEGRA210_MBDRC_CG:
        case TEGRA210_MBDRC_CFG ... TEGRA210_MBDRC_CFG_RAM_DATA:
                return true;
        default:
                return false;
        }
}

static bool tegra210_mbdrc_rd_reg(struct device *dev, unsigned int reg)
{
        if (tegra210_mbdrc_wr_reg(dev, reg))
                return true;

        if (reg >= TEGRA210_MBDRC_IIR_CFG)
                reg -= ((reg - TEGRA210_MBDRC_IIR_CFG) %
                        (TEGRA210_MBDRC_FILTER_PARAM_STRIDE *
                         TEGRA210_MBDRC_FILTER_COUNT));

        switch (reg) {
        case TEGRA210_MBDRC_STATUS:
                return true;
        default:
                return false;
        }
}

static bool tegra210_mbdrc_volatile_reg(struct device *dev, unsigned int reg)
{
        if (reg >= TEGRA210_MBDRC_IIR_CFG)
                reg -= ((reg - TEGRA210_MBDRC_IIR_CFG) %
                        (TEGRA210_MBDRC_FILTER_PARAM_STRIDE *
                         TEGRA210_MBDRC_FILTER_COUNT));

        switch (reg) {
        case TEGRA210_MBDRC_SOFT_RESET:
        case TEGRA210_MBDRC_STATUS:
        case TEGRA210_MBDRC_CFG_RAM_CTRL:
        case TEGRA210_MBDRC_CFG_RAM_DATA:
                return true;
        default:
                return false;
        }
}

static bool tegra210_mbdrc_precious_reg(struct device *dev, unsigned int reg)
{
        if (reg >= TEGRA210_MBDRC_IIR_CFG)
                reg -= ((reg - TEGRA210_MBDRC_IIR_CFG) %
                        (TEGRA210_MBDRC_FILTER_PARAM_STRIDE *
                         TEGRA210_MBDRC_FILTER_COUNT));

        switch (reg) {
        case TEGRA210_MBDRC_CFG_RAM_DATA:
                return true;
        default:
                return false;
        }
}

static const struct regmap_config tegra210_mbdrc_regmap_cfg = {
        .name                   = "mbdrc",
        .reg_bits               = 32,
        .reg_stride             = 4,
        .val_bits               = 32,
        .max_register           = TEGRA210_MBDRC_MAX_REG,
        .writeable_reg          = tegra210_mbdrc_wr_reg,
        .readable_reg           = tegra210_mbdrc_rd_reg,
        .volatile_reg           = tegra210_mbdrc_volatile_reg,
        .precious_reg           = tegra210_mbdrc_precious_reg,
        .reg_defaults           = tegra210_mbdrc_reg_defaults,
        .num_reg_defaults       = ARRAY_SIZE(tegra210_mbdrc_reg_defaults),
        .reg_default_cb         = regmap_default_zero_cb,
        .cache_type             = REGCACHE_FLAT,
};

int tegra210_mbdrc_hw_params(struct snd_soc_component *cmpnt)
{
        struct tegra210_ope *ope = snd_soc_component_get_drvdata(cmpnt);
        const struct tegra210_mbdrc_config *conf = &mbdrc_init_config;
        u32 val = 0;
        unsigned int i;

        regmap_read(ope->mbdrc_regmap, TEGRA210_MBDRC_CFG, &val);

        val &= TEGRA210_MBDRC_CFG_MBDRC_MODE_MASK;

        if (val == TEGRA210_MBDRC_CFG_MBDRC_MODE_BYPASS)
                return 0;

        for (i = 0; i < MBDRC_NUM_BAND; i++) {
                const struct tegra210_mbdrc_band_params *params =
                        &conf->band_params[i];

                u32 reg_off = i * TEGRA210_MBDRC_FILTER_PARAM_STRIDE;

                tegra210_mbdrc_write_ram(ope->mbdrc_regmap,
                                         reg_off + TEGRA210_MBDRC_CFG_RAM_CTRL,
                                         reg_off + TEGRA210_MBDRC_CFG_RAM_DATA,
                                         0, (u32 *)&params->biquad_params[0],
                                         TEGRA210_MBDRC_MAX_BIQUAD_STAGES * 5);
        }
        return 0;
}

int tegra210_mbdrc_component_init(struct snd_soc_component *cmpnt)
{
        struct tegra210_ope *ope = snd_soc_component_get_drvdata(cmpnt);
        const struct tegra210_mbdrc_config *conf = &mbdrc_init_config;
        unsigned int i;
        u32 val;

        pm_runtime_get_sync(cmpnt->dev);

        /* Initialize MBDRC registers and AHUB RAM with default params */
        regmap_update_bits(ope->mbdrc_regmap, TEGRA210_MBDRC_CFG,
                TEGRA210_MBDRC_CFG_MBDRC_MODE_MASK,
                conf->mode << TEGRA210_MBDRC_CFG_MBDRC_MODE_SHIFT);

        regmap_update_bits(ope->mbdrc_regmap, TEGRA210_MBDRC_CFG,
                TEGRA210_MBDRC_CFG_RMS_OFFSET_MASK,
                conf->rms_off << TEGRA210_MBDRC_CFG_RMS_OFFSET_SHIFT);

        regmap_update_bits(ope->mbdrc_regmap, TEGRA210_MBDRC_CFG,
                TEGRA210_MBDRC_CFG_PEAK_RMS_MASK,
                conf->peak_rms_mode << TEGRA210_MBDRC_CFG_PEAK_RMS_SHIFT);

        regmap_update_bits(ope->mbdrc_regmap, TEGRA210_MBDRC_CFG,
                TEGRA210_MBDRC_CFG_FILTER_STRUCTURE_MASK,
                conf->filter_structure <<
                TEGRA210_MBDRC_CFG_FILTER_STRUCTURE_SHIFT);

        regmap_update_bits(ope->mbdrc_regmap, TEGRA210_MBDRC_CFG,
                TEGRA210_MBDRC_CFG_SHIFT_CTRL_MASK,
                conf->shift_ctrl << TEGRA210_MBDRC_CFG_SHIFT_CTRL_SHIFT);

        regmap_update_bits(ope->mbdrc_regmap, TEGRA210_MBDRC_CFG,
                TEGRA210_MBDRC_CFG_FRAME_SIZE_MASK,
                __ffs(conf->frame_size) <<
                TEGRA210_MBDRC_CFG_FRAME_SIZE_SHIFT);

        regmap_update_bits(ope->mbdrc_regmap, TEGRA210_MBDRC_CHANNEL_MASK,
                TEGRA210_MBDRC_CHANNEL_MASK_MASK,
                conf->channel_mask << TEGRA210_MBDRC_CHANNEL_MASK_SHIFT);

        regmap_update_bits(ope->mbdrc_regmap, TEGRA210_MBDRC_FAST_FACTOR,
                TEGRA210_MBDRC_FAST_FACTOR_ATTACK_MASK,
                conf->fa_factor << TEGRA210_MBDRC_FAST_FACTOR_ATTACK_SHIFT);

        regmap_update_bits(ope->mbdrc_regmap, TEGRA210_MBDRC_FAST_FACTOR,
                TEGRA210_MBDRC_FAST_FACTOR_ATTACK_MASK,
                conf->fr_factor << TEGRA210_MBDRC_FAST_FACTOR_ATTACK_SHIFT);

        for (i = 0; i < MBDRC_NUM_BAND; i++) {
                const struct tegra210_mbdrc_band_params *params =
                                                &conf->band_params[i];
                u32 reg_off = i * TEGRA210_MBDRC_FILTER_PARAM_STRIDE;

                regmap_update_bits(ope->mbdrc_regmap,
                        reg_off + TEGRA210_MBDRC_IIR_CFG,
                        TEGRA210_MBDRC_IIR_CFG_NUM_STAGES_MASK,
                        params->iir_stages <<
                                TEGRA210_MBDRC_IIR_CFG_NUM_STAGES_SHIFT);

                regmap_update_bits(ope->mbdrc_regmap,
                        reg_off + TEGRA210_MBDRC_IN_ATTACK,
                        TEGRA210_MBDRC_IN_ATTACK_TC_MASK,
                        params->in_attack_tc <<
                                TEGRA210_MBDRC_IN_ATTACK_TC_SHIFT);

                regmap_update_bits(ope->mbdrc_regmap,
                        reg_off + TEGRA210_MBDRC_IN_RELEASE,
                        TEGRA210_MBDRC_IN_RELEASE_TC_MASK,
                        params->in_release_tc <<
                                TEGRA210_MBDRC_IN_RELEASE_TC_SHIFT);

                regmap_update_bits(ope->mbdrc_regmap,
                        reg_off + TEGRA210_MBDRC_FAST_ATTACK,
                        TEGRA210_MBDRC_FAST_ATTACK_TC_MASK,
                        params->fast_attack_tc <<
                                TEGRA210_MBDRC_FAST_ATTACK_TC_SHIFT);

                val = (((params->in_threshold[0] >>
                         TEGRA210_MBDRC_THRESH_1ST_SHIFT) &
                        TEGRA210_MBDRC_THRESH_1ST_MASK) |
                        ((params->in_threshold[1] >>
                          TEGRA210_MBDRC_THRESH_2ND_SHIFT) &
                         TEGRA210_MBDRC_THRESH_2ND_MASK) |
                        ((params->in_threshold[2] >>
                          TEGRA210_MBDRC_THRESH_3RD_SHIFT) &
                         TEGRA210_MBDRC_THRESH_3RD_MASK) |
                        ((params->in_threshold[3] >>
                          TEGRA210_MBDRC_THRESH_4TH_SHIFT) &
                         TEGRA210_MBDRC_THRESH_4TH_MASK));

                regmap_update_bits(ope->mbdrc_regmap,
                                   reg_off + TEGRA210_MBDRC_IN_THRESHOLD,
                                   0xffffffff, val);

                val = (((params->out_threshold[0] >>
                         TEGRA210_MBDRC_THRESH_1ST_SHIFT) &
                        TEGRA210_MBDRC_THRESH_1ST_MASK) |
                        ((params->out_threshold[1] >>
                          TEGRA210_MBDRC_THRESH_2ND_SHIFT) &
                         TEGRA210_MBDRC_THRESH_2ND_MASK) |
                        ((params->out_threshold[2] >>
                          TEGRA210_MBDRC_THRESH_3RD_SHIFT) &
                         TEGRA210_MBDRC_THRESH_3RD_MASK) |
                        ((params->out_threshold[3] >>
                          TEGRA210_MBDRC_THRESH_4TH_SHIFT) &
                         TEGRA210_MBDRC_THRESH_4TH_MASK));

                regmap_update_bits(ope->mbdrc_regmap,
                        reg_off + TEGRA210_MBDRC_OUT_THRESHOLD,
                        0xffffffff, val);

                regmap_update_bits(ope->mbdrc_regmap,
                        reg_off + TEGRA210_MBDRC_RATIO_1ST,
                        TEGRA210_MBDRC_RATIO_1ST_MASK,
                        params->ratio[0] << TEGRA210_MBDRC_RATIO_1ST_SHIFT);

                regmap_update_bits(ope->mbdrc_regmap,
                        reg_off + TEGRA210_MBDRC_RATIO_2ND,
                        TEGRA210_MBDRC_RATIO_2ND_MASK,
                        params->ratio[1] << TEGRA210_MBDRC_RATIO_2ND_SHIFT);

                regmap_update_bits(ope->mbdrc_regmap,
                        reg_off + TEGRA210_MBDRC_RATIO_3RD,
                        TEGRA210_MBDRC_RATIO_3RD_MASK,
                        params->ratio[2] << TEGRA210_MBDRC_RATIO_3RD_SHIFT);

                regmap_update_bits(ope->mbdrc_regmap,
                        reg_off + TEGRA210_MBDRC_RATIO_4TH,
                        TEGRA210_MBDRC_RATIO_4TH_MASK,
                        params->ratio[3] << TEGRA210_MBDRC_RATIO_4TH_SHIFT);

                regmap_update_bits(ope->mbdrc_regmap,
                        reg_off + TEGRA210_MBDRC_RATIO_5TH,
                        TEGRA210_MBDRC_RATIO_5TH_MASK,
                        params->ratio[4] << TEGRA210_MBDRC_RATIO_5TH_SHIFT);

                regmap_update_bits(ope->mbdrc_regmap,
                        reg_off + TEGRA210_MBDRC_MAKEUP_GAIN,
                        TEGRA210_MBDRC_MAKEUP_GAIN_MASK,
                        params->makeup_gain <<
                                TEGRA210_MBDRC_MAKEUP_GAIN_SHIFT);

                regmap_update_bits(ope->mbdrc_regmap,
                        reg_off + TEGRA210_MBDRC_INIT_GAIN,
                        TEGRA210_MBDRC_INIT_GAIN_MASK,
                        params->gain_init <<
                                TEGRA210_MBDRC_INIT_GAIN_SHIFT);

                regmap_update_bits(ope->mbdrc_regmap,
                        reg_off + TEGRA210_MBDRC_GAIN_ATTACK,
                        TEGRA210_MBDRC_GAIN_ATTACK_MASK,
                        params->gain_attack_tc <<
                                TEGRA210_MBDRC_GAIN_ATTACK_SHIFT);

                regmap_update_bits(ope->mbdrc_regmap,
                        reg_off + TEGRA210_MBDRC_GAIN_RELEASE,
                        TEGRA210_MBDRC_GAIN_RELEASE_MASK,
                        params->gain_release_tc <<
                                TEGRA210_MBDRC_GAIN_RELEASE_SHIFT);

                regmap_update_bits(ope->mbdrc_regmap,
                        reg_off + TEGRA210_MBDRC_FAST_RELEASE,
                        TEGRA210_MBDRC_FAST_RELEASE_MASK,
                        params->fast_release_tc <<
                                TEGRA210_MBDRC_FAST_RELEASE_SHIFT);

                tegra210_mbdrc_write_ram(ope->mbdrc_regmap,
                        reg_off + TEGRA210_MBDRC_CFG_RAM_CTRL,
                        reg_off + TEGRA210_MBDRC_CFG_RAM_DATA, 0,
                        (u32 *)&params->biquad_params[0],
                        TEGRA210_MBDRC_MAX_BIQUAD_STAGES * 5);
        }

        pm_runtime_put_sync(cmpnt->dev);

        snd_soc_add_component_controls(cmpnt, tegra210_mbdrc_controls,
                                       ARRAY_SIZE(tegra210_mbdrc_controls));

        return 0;
}

int tegra210_mbdrc_regmap_init(struct platform_device *pdev)
{
        struct device *dev = &pdev->dev;
        struct tegra210_ope *ope = dev_get_drvdata(dev);
        struct device_node *child;
        struct resource mem;
        void __iomem *regs;
        int err;

        child = of_get_child_by_name(dev->of_node, "dynamic-range-compressor");
        if (!child)
                return -ENODEV;

        err = of_address_to_resource(child, 0, &mem);
        of_node_put(child);
        if (err < 0) {
                dev_err(dev, "fail to get MBDRC resource\n");
                return err;
        }

        mem.flags = IORESOURCE_MEM;
        regs = devm_ioremap_resource(dev, &mem);
        if (IS_ERR(regs))
                return PTR_ERR(regs);

        ope->mbdrc_regmap = devm_regmap_init_mmio(dev, regs,
                                                  &tegra210_mbdrc_regmap_cfg);
        if (IS_ERR(ope->mbdrc_regmap)) {
                dev_err(dev, "regmap init failed\n");
                return PTR_ERR(ope->mbdrc_regmap);
        }

        regcache_cache_only(ope->mbdrc_regmap, true);

        return 0;
}