// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *   ALSA driver for ICEnsemble VT1724 (Envy24HT)
 *
 *   Lowlevel functions for ESI Maya44 cards
 *
 *      Copyright (c) 2009 Takashi Iwai <tiwai@suse.de>
 *      Based on the patches by Rainer Zimmermann <mail@lightshed.de>
 */

#include <linux/init.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/control.h>
#include <sound/pcm.h>
#include <sound/tlv.h>

#include "ice1712.h"
#include "envy24ht.h"
#include "maya44.h"

/* WM8776 register indexes */
#define WM8776_REG_HEADPHONE_L          0x00
#define WM8776_REG_HEADPHONE_R          0x01
#define WM8776_REG_HEADPHONE_MASTER     0x02
#define WM8776_REG_DAC_ATTEN_L          0x03
#define WM8776_REG_DAC_ATTEN_R          0x04
#define WM8776_REG_DAC_ATTEN_MASTER     0x05
#define WM8776_REG_DAC_PHASE            0x06
#define WM8776_REG_DAC_CONTROL          0x07
#define WM8776_REG_DAC_MUTE             0x08
#define WM8776_REG_DAC_DEEMPH           0x09
#define WM8776_REG_DAC_IF_CONTROL       0x0a
#define WM8776_REG_ADC_IF_CONTROL       0x0b
#define WM8776_REG_MASTER_MODE_CONTROL  0x0c
#define WM8776_REG_POWERDOWN            0x0d
#define WM8776_REG_ADC_ATTEN_L          0x0e
#define WM8776_REG_ADC_ATTEN_R          0x0f
#define WM8776_REG_ADC_ALC1             0x10
#define WM8776_REG_ADC_ALC2             0x11
#define WM8776_REG_ADC_ALC3             0x12
#define WM8776_REG_ADC_NOISE_GATE       0x13
#define WM8776_REG_ADC_LIMITER          0x14
#define WM8776_REG_ADC_MUX              0x15
#define WM8776_REG_OUTPUT_MUX           0x16
#define WM8776_REG_RESET                0x17

#define WM8776_NUM_REGS                 0x18

/* clock ratio identifiers for snd_wm8776_set_rate() */
#define WM8776_CLOCK_RATIO_128FS        0
#define WM8776_CLOCK_RATIO_192FS        1
#define WM8776_CLOCK_RATIO_256FS        2
#define WM8776_CLOCK_RATIO_384FS        3
#define WM8776_CLOCK_RATIO_512FS        4
#define WM8776_CLOCK_RATIO_768FS        5

enum { WM_VOL_HP, WM_VOL_DAC, WM_VOL_ADC, WM_NUM_VOLS };
enum { WM_SW_DAC, WM_SW_BYPASS, WM_NUM_SWITCHES };

struct snd_wm8776 {
        unsigned char addr;
        unsigned short regs[WM8776_NUM_REGS];
        unsigned char volumes[WM_NUM_VOLS][2];
        unsigned int switch_bits;
};

struct snd_maya44 {
        struct snd_ice1712 *ice;
        struct snd_wm8776 wm[2];
        struct mutex mutex;
};


/* write the given register and save the data to the cache */
static void wm8776_write(struct snd_ice1712 *ice, struct snd_wm8776 *wm,
                         unsigned char reg, unsigned short val)
{
        /*
         * WM8776 registers are up to 9 bits wide, bit 8 is placed in the LSB
         * of the address field
         */
        snd_vt1724_write_i2c(ice, wm->addr,
                             (reg << 1) | ((val >> 8) & 1),
                             val & 0xff);
        wm->regs[reg] = val;
}

/*
 * update the given register with and/or mask and save the data to the cache
 */
static int wm8776_write_bits(struct snd_ice1712 *ice, struct snd_wm8776 *wm,
                             unsigned char reg,
                             unsigned short mask, unsigned short val)
{
        val |= wm->regs[reg] & ~mask;
        if (val != wm->regs[reg]) {
                wm8776_write(ice, wm, reg, val);
                return 1;
        }
        return 0;
}


/*
 * WM8776 volume controls
 */

struct maya_vol_info {
        unsigned int maxval;            /* volume range: 0..maxval */
        unsigned char regs[2];          /* left and right registers */
        unsigned short mask;            /* value mask */
        unsigned short offset;          /* zero-value offset */
        unsigned short mute;            /* mute bit */
        unsigned short update;          /* update bits */
        unsigned char mux_bits[2];      /* extra bits for ADC mute */
};

static const struct maya_vol_info vol_info[WM_NUM_VOLS] = {
        [WM_VOL_HP] = {
                .maxval = 80,
                .regs = { WM8776_REG_HEADPHONE_L, WM8776_REG_HEADPHONE_R },
                .mask = 0x7f,
                .offset = 0x30,
                .mute = 0x00,
                .update = 0x180,        /* update and zero-cross enable */
        },
        [WM_VOL_DAC] = {
                .maxval = 255,
                .regs = { WM8776_REG_DAC_ATTEN_L, WM8776_REG_DAC_ATTEN_R },
                .mask = 0xff,
                .offset = 0x01,
                .mute = 0x00,
                .update = 0x100,        /* zero-cross enable */
        },
        [WM_VOL_ADC] = {
                .maxval = 91,
                .regs = { WM8776_REG_ADC_ATTEN_L, WM8776_REG_ADC_ATTEN_R },
                .mask = 0xff,
                .offset = 0xa5,
                .mute = 0xa5,
                .update = 0x100,        /* update */
                .mux_bits = { 0x80, 0x40 }, /* ADCMUX bits */
        },
};

/*
 * dB tables
 */
/* headphone output: mute, -73..+6db (1db step) */
static const DECLARE_TLV_DB_SCALE(db_scale_hp, -7400, 100, 1);
/* DAC output: mute, -127..0db (0.5db step) */
static const DECLARE_TLV_DB_SCALE(db_scale_dac, -12750, 50, 1);
/* ADC gain: mute, -21..+24db (0.5db step) */
static const DECLARE_TLV_DB_SCALE(db_scale_adc, -2100, 50, 1);

static int maya_vol_info(struct snd_kcontrol *kcontrol,
                         struct snd_ctl_elem_info *uinfo)
{
        unsigned int idx = kcontrol->private_value;
        const struct maya_vol_info *vol = &vol_info[idx];

        uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
        uinfo->count = 2;
        uinfo->value.integer.min = 0;
        uinfo->value.integer.max = vol->maxval;
        return 0;
}

static int maya_vol_get(struct snd_kcontrol *kcontrol,
                        struct snd_ctl_elem_value *ucontrol)
{
        struct snd_maya44 *chip = snd_kcontrol_chip(kcontrol);
        struct snd_wm8776 *wm =
                &chip->wm[snd_ctl_get_ioff(kcontrol, &ucontrol->id)];
        unsigned int idx = kcontrol->private_value;

        guard(mutex)(&chip->mutex);
        ucontrol->value.integer.value[0] = wm->volumes[idx][0];
        ucontrol->value.integer.value[1] = wm->volumes[idx][1];
        return 0;
}

static int maya_vol_put(struct snd_kcontrol *kcontrol,
                        struct snd_ctl_elem_value *ucontrol)
{
        struct snd_maya44 *chip = snd_kcontrol_chip(kcontrol);
        struct snd_wm8776 *wm =
                &chip->wm[snd_ctl_get_ioff(kcontrol, &ucontrol->id)];
        unsigned int idx = kcontrol->private_value;
        const struct maya_vol_info *vol = &vol_info[idx];
        unsigned int val, data;
        int ch, changed = 0;

        guard(mutex)(&chip->mutex);
        for (ch = 0; ch < 2; ch++) {
                val = ucontrol->value.integer.value[ch];
                if (val > vol->maxval)
                        val = vol->maxval;
                if (val == wm->volumes[idx][ch])
                        continue;
                if (!val)
                        data = vol->mute;
                else
                        data = (val - 1) + vol->offset;
                data |= vol->update;
                changed |= wm8776_write_bits(chip->ice, wm, vol->regs[ch],
                                             vol->mask | vol->update, data);
                if (vol->mux_bits[ch])
                        wm8776_write_bits(chip->ice, wm, WM8776_REG_ADC_MUX,
                                          vol->mux_bits[ch],
                                          val ? 0 : vol->mux_bits[ch]);
                wm->volumes[idx][ch] = val;
        }
        return changed;
}

/*
 * WM8776 switch controls
 */

#define COMPOSE_SW_VAL(idx, reg, mask)  ((idx) | ((reg) << 8) | ((mask) << 16))
#define GET_SW_VAL_IDX(val)     ((val) & 0xff)
#define GET_SW_VAL_REG(val)     (((val) >> 8) & 0xff)
#define GET_SW_VAL_MASK(val)    (((val) >> 16) & 0xff)

#define maya_sw_info    snd_ctl_boolean_mono_info

static int maya_sw_get(struct snd_kcontrol *kcontrol,
                       struct snd_ctl_elem_value *ucontrol)
{
        struct snd_maya44 *chip = snd_kcontrol_chip(kcontrol);
        struct snd_wm8776 *wm =
                &chip->wm[snd_ctl_get_ioff(kcontrol, &ucontrol->id)];
        unsigned int idx = GET_SW_VAL_IDX(kcontrol->private_value);

        ucontrol->value.integer.value[0] = (wm->switch_bits >> idx) & 1;
        return 0;
}

static int maya_sw_put(struct snd_kcontrol *kcontrol,
                       struct snd_ctl_elem_value *ucontrol)
{
        struct snd_maya44 *chip = snd_kcontrol_chip(kcontrol);
        struct snd_wm8776 *wm =
                &chip->wm[snd_ctl_get_ioff(kcontrol, &ucontrol->id)];
        unsigned int idx = GET_SW_VAL_IDX(kcontrol->private_value);
        unsigned int mask, val;
        int changed;

        guard(mutex)(&chip->mutex);
        mask = 1 << idx;
        wm->switch_bits &= ~mask;
        val = ucontrol->value.integer.value[0];
        if (val)
                wm->switch_bits |= mask;
        mask = GET_SW_VAL_MASK(kcontrol->private_value);
        changed = wm8776_write_bits(chip->ice, wm,
                                    GET_SW_VAL_REG(kcontrol->private_value),
                                    mask, val ? mask : 0);
        return changed;
}

/*
 * GPIO pins (known ones for maya44)
 */
#define GPIO_PHANTOM_OFF        2
#define GPIO_MIC_RELAY          4
#define GPIO_SPDIF_IN_INV       5
#define GPIO_MUST_BE_0          7

/*
 * GPIO switch controls
 */

#define COMPOSE_GPIO_VAL(shift, inv)    ((shift) | ((inv) << 8))
#define GET_GPIO_VAL_SHIFT(val)         ((val) & 0xff)
#define GET_GPIO_VAL_INV(val)           (((val) >> 8) & 1)

static int maya_set_gpio_bits(struct snd_ice1712 *ice, unsigned int mask,
                              unsigned int bits)
{
        unsigned int data;
        data = snd_ice1712_gpio_read(ice);
        if ((data & mask) == bits)
                return 0;
        snd_ice1712_gpio_write(ice, (data & ~mask) | bits);
        return 1;
}

#define maya_gpio_sw_info       snd_ctl_boolean_mono_info

static int maya_gpio_sw_get(struct snd_kcontrol *kcontrol,
                            struct snd_ctl_elem_value *ucontrol)
{
        struct snd_maya44 *chip = snd_kcontrol_chip(kcontrol);
        unsigned int shift = GET_GPIO_VAL_SHIFT(kcontrol->private_value);
        unsigned int val;

        val = (snd_ice1712_gpio_read(chip->ice) >> shift) & 1;
        if (GET_GPIO_VAL_INV(kcontrol->private_value))
                val = !val;
        ucontrol->value.integer.value[0] = val;
        return 0;
}

static int maya_gpio_sw_put(struct snd_kcontrol *kcontrol,
                            struct snd_ctl_elem_value *ucontrol)
{
        struct snd_maya44 *chip = snd_kcontrol_chip(kcontrol);
        unsigned int shift = GET_GPIO_VAL_SHIFT(kcontrol->private_value);
        unsigned int val, mask;
        int changed;

        guard(mutex)(&chip->mutex);
        mask = 1 << shift;
        val = ucontrol->value.integer.value[0];
        if (GET_GPIO_VAL_INV(kcontrol->private_value))
                val = !val;
        val = val ? mask : 0;
        changed = maya_set_gpio_bits(chip->ice, mask, val);
        return changed;
}

/*
 * capture source selection
 */

/* known working input slots (0-4) */
#define MAYA_LINE_IN    1       /* in-2 */
#define MAYA_MIC_IN     3       /* in-4 */

static void wm8776_select_input(struct snd_maya44 *chip, int idx, int line)
{
        wm8776_write_bits(chip->ice, &chip->wm[idx], WM8776_REG_ADC_MUX,
                          0x1f, 1 << line);
}

static int maya_rec_src_info(struct snd_kcontrol *kcontrol,
                             struct snd_ctl_elem_info *uinfo)
{
        static const char * const texts[] = { "Line", "Mic" };

        return snd_ctl_enum_info(uinfo, 1, ARRAY_SIZE(texts), texts);
}

static int maya_rec_src_get(struct snd_kcontrol *kcontrol,
                            struct snd_ctl_elem_value *ucontrol)
{
        struct snd_maya44 *chip = snd_kcontrol_chip(kcontrol);
        int sel;

        if (snd_ice1712_gpio_read(chip->ice) & (1 << GPIO_MIC_RELAY))
                sel = 1;
        else
                sel = 0;
        ucontrol->value.enumerated.item[0] = sel;
        return 0;
}

static int maya_rec_src_put(struct snd_kcontrol *kcontrol,
                            struct snd_ctl_elem_value *ucontrol)
{
        struct snd_maya44 *chip = snd_kcontrol_chip(kcontrol);
        int sel = ucontrol->value.enumerated.item[0];
        int changed;

        guard(mutex)(&chip->mutex);
        changed = maya_set_gpio_bits(chip->ice, 1 << GPIO_MIC_RELAY,
                                     sel ? (1 << GPIO_MIC_RELAY) : 0);
        wm8776_select_input(chip, 0, sel ? MAYA_MIC_IN : MAYA_LINE_IN);
        return changed;
}

/*
 * Maya44 routing switch settings have different meanings than the standard
 * ice1724 switches as defined in snd_vt1724_pro_route_info (ice1724.c).
 */
static int maya_pb_route_info(struct snd_kcontrol *kcontrol,
                              struct snd_ctl_elem_info *uinfo)
{
        static const char * const texts[] = {
                "PCM Out", /* 0 */
                "Input 1", "Input 2", "Input 3", "Input 4"
        };

        return snd_ctl_enum_info(uinfo, 1, ARRAY_SIZE(texts), texts);
}

static int maya_pb_route_shift(int idx)
{
        static const unsigned char shift[10] =
                { 8, 20, 0, 3, 11, 23, 14, 26, 17, 29 };
        return shift[idx % 10];
}

static int maya_pb_route_get(struct snd_kcontrol *kcontrol,
                             struct snd_ctl_elem_value *ucontrol)
{
        struct snd_maya44 *chip = snd_kcontrol_chip(kcontrol);
        int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
        ucontrol->value.enumerated.item[0] =
                snd_ice1724_get_route_val(chip->ice, maya_pb_route_shift(idx));
        return 0;
}

static int maya_pb_route_put(struct snd_kcontrol *kcontrol,
                             struct snd_ctl_elem_value *ucontrol)
{
        struct snd_maya44 *chip = snd_kcontrol_chip(kcontrol);
        int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
        return snd_ice1724_put_route_val(chip->ice,
                                         ucontrol->value.enumerated.item[0],
                                         maya_pb_route_shift(idx));
}


/*
 * controls to be added
 */

static const struct snd_kcontrol_new maya_controls[] = {
        {
                .name = "Crossmix Playback Volume",
                .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
                .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
                        SNDRV_CTL_ELEM_ACCESS_TLV_READ,
                .info = maya_vol_info,
                .get = maya_vol_get,
                .put = maya_vol_put,
                .tlv = { .p = db_scale_hp },
                .private_value = WM_VOL_HP,
                .count = 2,
        },
        {
                .name = "PCM Playback Volume",
                .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
                .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
                        SNDRV_CTL_ELEM_ACCESS_TLV_READ,
                .info = maya_vol_info,
                .get = maya_vol_get,
                .put = maya_vol_put,
                .tlv = { .p = db_scale_dac },
                .private_value = WM_VOL_DAC,
                .count = 2,
        },
        {
                .name = "Line Capture Volume",
                .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
                .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
                        SNDRV_CTL_ELEM_ACCESS_TLV_READ,
                .info = maya_vol_info,
                .get = maya_vol_get,
                .put = maya_vol_put,
                .tlv = { .p = db_scale_adc },
                .private_value = WM_VOL_ADC,
                .count = 2,
        },
        {
                .name = "PCM Playback Switch",
                .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
                .info = maya_sw_info,
                .get = maya_sw_get,
                .put = maya_sw_put,
                .private_value = COMPOSE_SW_VAL(WM_SW_DAC,
                                                WM8776_REG_OUTPUT_MUX, 0x01),
                .count = 2,
        },
        {
                .name = "Bypass Playback Switch",
                .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
                .info = maya_sw_info,
                .get = maya_sw_get,
                .put = maya_sw_put,
                .private_value = COMPOSE_SW_VAL(WM_SW_BYPASS,
                                                WM8776_REG_OUTPUT_MUX, 0x04),
                .count = 2,
        },
        {
                .name = "Capture Source",
                .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
                .info = maya_rec_src_info,
                .get = maya_rec_src_get,
                .put = maya_rec_src_put,
        },
        {
                .name = "Mic Phantom Power Switch",
                .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
                .info = maya_gpio_sw_info,
                .get = maya_gpio_sw_get,
                .put = maya_gpio_sw_put,
                .private_value = COMPOSE_GPIO_VAL(GPIO_PHANTOM_OFF, 1),
        },
        {
                .name = "SPDIF Capture Switch",
                .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
                .info = maya_gpio_sw_info,
                .get = maya_gpio_sw_get,
                .put = maya_gpio_sw_put,
                .private_value = COMPOSE_GPIO_VAL(GPIO_SPDIF_IN_INV, 1),
        },
        {
                .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
                .name = "H/W Playback Route",
                .info = maya_pb_route_info,
                .get = maya_pb_route_get,
                .put = maya_pb_route_put,
                .count = 4,  /* FIXME: do controls 5-9 have any meaning? */
        },
};

static int maya44_add_controls(struct snd_ice1712 *ice)
{
        int err, i;

        for (i = 0; i < ARRAY_SIZE(maya_controls); i++) {
                err = snd_ctl_add(ice->card, snd_ctl_new1(&maya_controls[i],
                                                          ice->spec));
                if (err < 0)
                        return err;
        }
        return 0;
}


/*
 * initialize a wm8776 chip
 */
static void wm8776_init(struct snd_ice1712 *ice,
                        struct snd_wm8776 *wm, unsigned int addr)
{
        static const unsigned short inits_wm8776[] = {
                0x02, 0x100, /* R2: headphone L+R muted + update */
                0x05, 0x100, /* R5: DAC output L+R muted + update */
                0x06, 0x000, /* R6: DAC output phase normal */
                0x07, 0x091, /* R7: DAC enable zero cross detection,
                                normal output */
                0x08, 0x000, /* R8: DAC soft mute off */
                0x09, 0x000, /* R9: no deemph, DAC zero detect disabled */
                0x0a, 0x022, /* R10: DAC I2C mode, std polarities, 24bit */
                0x0b, 0x022, /* R11: ADC I2C mode, std polarities, 24bit,
                                highpass filter enabled */
                0x0c, 0x042, /* R12: ADC+DAC slave, ADC+DAC 44,1kHz */
                0x0d, 0x000, /* R13: all power up */
                0x0e, 0x100, /* R14: ADC left muted,
                                enable zero cross detection */
                0x0f, 0x100, /* R15: ADC right muted,
                                enable zero cross detection */
                             /* R16: ALC...*/
                0x11, 0x000, /* R17: disable ALC */
                             /* R18: ALC...*/
                             /* R19: noise gate...*/
                0x15, 0x000, /* R21: ADC input mux init, mute all inputs */
                0x16, 0x001, /* R22: output mux, select DAC */
                0xff, 0xff
        };

        const unsigned short *ptr;
        unsigned char reg;
        unsigned short data;

        wm->addr = addr;
        /* enable DAC output; mute bypass, aux & all inputs */
        wm->switch_bits = (1 << WM_SW_DAC);

        ptr = inits_wm8776;
        while (*ptr != 0xff) {
                reg = *ptr++;
                data = *ptr++;
                wm8776_write(ice, wm, reg, data);
        }
}


/*
 * change the rate on the WM8776 codecs.
 * this assumes that the VT17xx's rate is changed by the calling function.
 * NOTE: even though the WM8776's are running in slave mode and rate
 * selection is automatic, we need to call snd_wm8776_set_rate() here
 * to make sure some flags are set correctly.
 */
static void set_rate(struct snd_ice1712 *ice, unsigned int rate)
{
        struct snd_maya44 *chip = ice->spec;
        unsigned int ratio, adc_ratio, val;
        int i;

        switch (rate) {
        case 192000:
                ratio = WM8776_CLOCK_RATIO_128FS;
                break;
        case 176400:
                ratio = WM8776_CLOCK_RATIO_128FS;
                break;
        case 96000:
                ratio = WM8776_CLOCK_RATIO_256FS;
                break;
        case 88200:
                ratio = WM8776_CLOCK_RATIO_384FS;
                break;
        case 48000:
                ratio = WM8776_CLOCK_RATIO_512FS;
                break;
        case 44100:
                ratio = WM8776_CLOCK_RATIO_512FS;
                break;
        case 32000:
                ratio = WM8776_CLOCK_RATIO_768FS;
                break;
        case 0:
                /* no hint - S/PDIF input is master, simply return */
                return;
        default:
                snd_BUG();
                return;
        }

        /*
         * this currently sets the same rate for ADC and DAC, but limits
         * ADC rate to 256X (96kHz). For 256X mode (96kHz), this sets ADC
         * oversampling to 64x, as recommended by WM8776 datasheet.
         * Setting the rate is not really necessary in slave mode.
         */
        adc_ratio = ratio;
        if (adc_ratio < WM8776_CLOCK_RATIO_256FS)
                adc_ratio = WM8776_CLOCK_RATIO_256FS;

        val = adc_ratio;
        if (adc_ratio == WM8776_CLOCK_RATIO_256FS)
                val |= 8;
        val |= ratio << 4;

        guard(mutex)(&chip->mutex);
        for (i = 0; i < 2; i++)
                wm8776_write_bits(ice, &chip->wm[i],
                                  WM8776_REG_MASTER_MODE_CONTROL,
                                  0x180, val);
}

/*
 * supported sample rates (to override the default one)
 */

static const unsigned int rates[] = {
        32000, 44100, 48000, 64000, 88200, 96000, 176400, 192000
};

/* playback rates: 32..192 kHz */
static const struct snd_pcm_hw_constraint_list dac_rates = {
        .count = ARRAY_SIZE(rates),
        .list = rates,
        .mask = 0
};


/*
 * chip addresses on I2C bus
 */
static const unsigned char wm8776_addr[2] = {
        0x34, 0x36, /* codec 0 & 1 */
};

/*
 * initialize the chip
 */
static int maya44_init(struct snd_ice1712 *ice)
{
        int i;
        struct snd_maya44 *chip;

        chip = kzalloc_obj(*chip);
        if (!chip)
                return -ENOMEM;
        mutex_init(&chip->mutex);
        chip->ice = ice;
        ice->spec = chip;

        /* initialise codecs */
        ice->num_total_dacs = 4;
        ice->num_total_adcs = 4;
        ice->akm_codecs = 0;

        for (i = 0; i < 2; i++) {
                wm8776_init(ice, &chip->wm[i], wm8776_addr[i]);
                wm8776_select_input(chip, i, MAYA_LINE_IN);
        }

        /* set card specific rates */
        ice->hw_rates = &dac_rates;

        /* register change rate notifier */
        ice->gpio.set_pro_rate = set_rate;

        /* RDMA1 (2nd input channel) is used for ADC by default */
        ice->force_rdma1 = 1;

        /* have an own routing control */
        ice->own_routing = 1;

        return 0;
}


/*
 * Maya44 boards don't provide the EEPROM data except for the vendor IDs.
 * hence the driver needs to sets up it properly.
 */

static const unsigned char maya44_eeprom[] = {
        [ICE_EEP2_SYSCONF]     = 0x45,
                /* clock xin1=49.152MHz, mpu401, 2 stereo ADCs+DACs */
        [ICE_EEP2_ACLINK]      = 0x80,
                /* I2S */
        [ICE_EEP2_I2S]         = 0xf8,
                /* vol, 96k, 24bit, 192k */
        [ICE_EEP2_SPDIF]       = 0xc3,
                /* enable spdif out, spdif out supp, spdif-in, ext spdif out */
        [ICE_EEP2_GPIO_DIR]    = 0xff,
        [ICE_EEP2_GPIO_DIR1]   = 0xff,
        [ICE_EEP2_GPIO_DIR2]   = 0xff,
        [ICE_EEP2_GPIO_MASK]   = 0/*0x9f*/,
        [ICE_EEP2_GPIO_MASK1]  = 0/*0xff*/,
        [ICE_EEP2_GPIO_MASK2]  = 0/*0x7f*/,
        [ICE_EEP2_GPIO_STATE]  = (1 << GPIO_PHANTOM_OFF) |
                        (1 << GPIO_SPDIF_IN_INV),
        [ICE_EEP2_GPIO_STATE1] = 0x00,
        [ICE_EEP2_GPIO_STATE2] = 0x00,
};

/* entry point */
struct snd_ice1712_card_info snd_vt1724_maya44_cards[] = {
        {
                .subvendor = VT1724_SUBDEVICE_MAYA44,
                .name = "ESI Maya44",
                .model = "maya44",
                .chip_init = maya44_init,
                .build_controls = maya44_add_controls,
                .eeprom_size = sizeof(maya44_eeprom),
                .eeprom_data = maya44_eeprom,
        },
        { } /* terminator */
};