// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *   ALSA driver for ICEnsemble ICE1712 (Envy24)
 *
 *   Lowlevel functions for M-Audio Delta 1010, 1010E, 44, 66, 66E, Dio2496,
 *                          Audiophile, Digigram VX442
 *
 *      Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz>
 */      

#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/mutex.h>

#include <sound/core.h>
#include <sound/cs8427.h>
#include <sound/asoundef.h>

#include "ice1712.h"
#include "delta.h"

#define SND_CS8403
#include <sound/cs8403.h>


/*
 * CS8427 via SPI mode (for Audiophile), emulated I2C
 */

/* send 8 bits */
static void ap_cs8427_write_byte(struct snd_ice1712 *ice, unsigned char data, unsigned char tmp)
{
        int idx;

        for (idx = 7; idx >= 0; idx--) {
                tmp &= ~(ICE1712_DELTA_AP_DOUT|ICE1712_DELTA_AP_CCLK);
                if (data & (1 << idx))
                        tmp |= ICE1712_DELTA_AP_DOUT;
                snd_ice1712_write(ice, ICE1712_IREG_GPIO_DATA, tmp);
                udelay(5);
                tmp |= ICE1712_DELTA_AP_CCLK;
                snd_ice1712_write(ice, ICE1712_IREG_GPIO_DATA, tmp);
                udelay(5);
        }
}

/* read 8 bits */
static unsigned char ap_cs8427_read_byte(struct snd_ice1712 *ice, unsigned char tmp)
{
        unsigned char data = 0;
        int idx;
        
        for (idx = 7; idx >= 0; idx--) {
                tmp &= ~ICE1712_DELTA_AP_CCLK;
                snd_ice1712_write(ice, ICE1712_IREG_GPIO_DATA, tmp);
                udelay(5);
                if (snd_ice1712_read(ice, ICE1712_IREG_GPIO_DATA) & ICE1712_DELTA_AP_DIN)
                        data |= 1 << idx;
                tmp |= ICE1712_DELTA_AP_CCLK;
                snd_ice1712_write(ice, ICE1712_IREG_GPIO_DATA, tmp);
                udelay(5);
        }
        return data;
}

/* assert chip select */
static unsigned char ap_cs8427_codec_select(struct snd_ice1712 *ice)
{
        unsigned char tmp;
        tmp = snd_ice1712_read(ice, ICE1712_IREG_GPIO_DATA);
        switch (ice->eeprom.subvendor) {
        case ICE1712_SUBDEVICE_DELTA1010E:
        case ICE1712_SUBDEVICE_DELTA1010LT:
                tmp &= ~ICE1712_DELTA_1010LT_CS;
                tmp |= ICE1712_DELTA_1010LT_CCLK | ICE1712_DELTA_1010LT_CS_CS8427;
                break;
        case ICE1712_SUBDEVICE_AUDIOPHILE:
        case ICE1712_SUBDEVICE_DELTA410:
                tmp |= ICE1712_DELTA_AP_CCLK | ICE1712_DELTA_AP_CS_CODEC;
                tmp &= ~ICE1712_DELTA_AP_CS_DIGITAL;
                break;
        case ICE1712_SUBDEVICE_DELTA66E:
                tmp |= ICE1712_DELTA_66E_CCLK | ICE1712_DELTA_66E_CS_CHIP_A |
                       ICE1712_DELTA_66E_CS_CHIP_B;
                tmp &= ~ICE1712_DELTA_66E_CS_CS8427;
                break;
        case ICE1712_SUBDEVICE_VX442:
                tmp |= ICE1712_VX442_CCLK | ICE1712_VX442_CODEC_CHIP_A | ICE1712_VX442_CODEC_CHIP_B;
                tmp &= ~ICE1712_VX442_CS_DIGITAL;
                break;
        }
        snd_ice1712_write(ice, ICE1712_IREG_GPIO_DATA, tmp);
        udelay(5);
        return tmp;
}

/* deassert chip select */
static void ap_cs8427_codec_deassert(struct snd_ice1712 *ice, unsigned char tmp)
{
        switch (ice->eeprom.subvendor) {
        case ICE1712_SUBDEVICE_DELTA1010E:
        case ICE1712_SUBDEVICE_DELTA1010LT:
                tmp &= ~ICE1712_DELTA_1010LT_CS;
                tmp |= ICE1712_DELTA_1010LT_CS_NONE;
                break;
        case ICE1712_SUBDEVICE_AUDIOPHILE:
        case ICE1712_SUBDEVICE_DELTA410:
                tmp |= ICE1712_DELTA_AP_CS_DIGITAL;
                break;
        case ICE1712_SUBDEVICE_DELTA66E:
                tmp |= ICE1712_DELTA_66E_CS_CS8427;
                break;
        case ICE1712_SUBDEVICE_VX442:
                tmp |= ICE1712_VX442_CS_DIGITAL;
                break;
        }
        snd_ice1712_write(ice, ICE1712_IREG_GPIO_DATA, tmp);
}

/* sequential write */
static int ap_cs8427_sendbytes(struct snd_i2c_device *device, unsigned char *bytes, int count)
{
        struct snd_ice1712 *ice = device->bus->private_data;
        int res = count;
        unsigned char tmp;

        guard(mutex)(&ice->gpio_mutex);
        tmp = ap_cs8427_codec_select(ice);
        ap_cs8427_write_byte(ice, (device->addr << 1) | 0, tmp); /* address + write mode */
        while (count-- > 0)
                ap_cs8427_write_byte(ice, *bytes++, tmp);
        ap_cs8427_codec_deassert(ice, tmp);
        return res;
}

/* sequential read */
static int ap_cs8427_readbytes(struct snd_i2c_device *device, unsigned char *bytes, int count)
{
        struct snd_ice1712 *ice = device->bus->private_data;
        int res = count;
        unsigned char tmp;
        
        guard(mutex)(&ice->gpio_mutex);
        tmp = ap_cs8427_codec_select(ice);
        ap_cs8427_write_byte(ice, (device->addr << 1) | 1, tmp); /* address + read mode */
        while (count-- > 0)
                *bytes++ = ap_cs8427_read_byte(ice, tmp);
        ap_cs8427_codec_deassert(ice, tmp);
        return res;
}

static int ap_cs8427_probeaddr(struct snd_i2c_bus *bus, unsigned short addr)
{
        if (addr == 0x10)
                return 1;
        return -ENOENT;
}

static const struct snd_i2c_ops ap_cs8427_i2c_ops = {
        .sendbytes = ap_cs8427_sendbytes,
        .readbytes = ap_cs8427_readbytes,
        .probeaddr = ap_cs8427_probeaddr,
};

/*
 */

static void snd_ice1712_delta_cs8403_spdif_write(struct snd_ice1712 *ice, unsigned char bits)
{
        unsigned char tmp, mask1, mask2;
        int idx;
        /* send byte to transmitter */
        mask1 = ICE1712_DELTA_SPDIF_OUT_STAT_CLOCK;
        mask2 = ICE1712_DELTA_SPDIF_OUT_STAT_DATA;
        guard(mutex)(&ice->gpio_mutex);
        tmp = snd_ice1712_read(ice, ICE1712_IREG_GPIO_DATA);
        for (idx = 7; idx >= 0; idx--) {
                tmp &= ~(mask1 | mask2);
                if (bits & (1 << idx))
                        tmp |= mask2;
                snd_ice1712_write(ice, ICE1712_IREG_GPIO_DATA, tmp);
                udelay(100);
                tmp |= mask1;
                snd_ice1712_write(ice, ICE1712_IREG_GPIO_DATA, tmp);
                udelay(100);
        }
        tmp &= ~mask1;
        snd_ice1712_write(ice, ICE1712_IREG_GPIO_DATA, tmp);
}


static void delta_spdif_default_get(struct snd_ice1712 *ice, struct snd_ctl_elem_value *ucontrol)
{
        snd_cs8403_decode_spdif_bits(&ucontrol->value.iec958, ice->spdif.cs8403_bits);
}

static int delta_spdif_default_put(struct snd_ice1712 *ice, struct snd_ctl_elem_value *ucontrol)
{
        unsigned int val;
        int change;

        val = snd_cs8403_encode_spdif_bits(&ucontrol->value.iec958);
        scoped_guard(spinlock_irq, &ice->reg_lock) {
                change = ice->spdif.cs8403_bits != val;
                ice->spdif.cs8403_bits = val;
                if (!change || ice->playback_pro_substream)
                        return change;
        }
        snd_ice1712_delta_cs8403_spdif_write(ice, val);
        return change;
}

static void delta_spdif_stream_get(struct snd_ice1712 *ice, struct snd_ctl_elem_value *ucontrol)
{
        snd_cs8403_decode_spdif_bits(&ucontrol->value.iec958, ice->spdif.cs8403_stream_bits);
}

static int delta_spdif_stream_put(struct snd_ice1712 *ice, struct snd_ctl_elem_value *ucontrol)
{
        unsigned int val;
        int change;

        val = snd_cs8403_encode_spdif_bits(&ucontrol->value.iec958);
        scoped_guard(spinlock_irq, &ice->reg_lock) {
                change = ice->spdif.cs8403_stream_bits != val;
                ice->spdif.cs8403_stream_bits = val;
                if (!change || ice->playback_pro_substream)
                        return change;
        }
        snd_ice1712_delta_cs8403_spdif_write(ice, val);
        return change;
}


/*
 * AK4524 on Delta 44 and 66 to choose the chip mask
 */
static void delta_ak4524_lock(struct snd_akm4xxx *ak, int chip)
{
        struct snd_ak4xxx_private *priv = (void *)ak->private_value[0];
        struct snd_ice1712 *ice = ak->private_data[0];

        snd_ice1712_save_gpio_status(ice);
        priv->cs_mask =
        priv->cs_addr = chip == 0 ? ICE1712_DELTA_CODEC_CHIP_A :
                                    ICE1712_DELTA_CODEC_CHIP_B;
}

/*
 * AK4524 on Delta1010LT to choose the chip address
 */
static void delta1010lt_ak4524_lock(struct snd_akm4xxx *ak, int chip)
{
        struct snd_ak4xxx_private *priv = (void *)ak->private_value[0];
        struct snd_ice1712 *ice = ak->private_data[0];

        snd_ice1712_save_gpio_status(ice);
        priv->cs_mask = ICE1712_DELTA_1010LT_CS;
        priv->cs_addr = chip << 4;
}

/*
 * AK4524 on Delta66 rev E to choose the chip address
 */
static void delta66e_ak4524_lock(struct snd_akm4xxx *ak, int chip)
{
        struct snd_ak4xxx_private *priv = (void *)ak->private_value[0];
        struct snd_ice1712 *ice = ak->private_data[0];

        snd_ice1712_save_gpio_status(ice);
        priv->cs_mask =
        priv->cs_addr = chip == 0 ? ICE1712_DELTA_66E_CS_CHIP_A :
                                    ICE1712_DELTA_66E_CS_CHIP_B;
}

/*
 * AK4528 on VX442 to choose the chip mask
 */
static void vx442_ak4524_lock(struct snd_akm4xxx *ak, int chip)
{
        struct snd_ak4xxx_private *priv = (void *)ak->private_value[0];
        struct snd_ice1712 *ice = ak->private_data[0];

        snd_ice1712_save_gpio_status(ice);
        priv->cs_mask =
        priv->cs_addr = chip == 0 ? ICE1712_VX442_CODEC_CHIP_A :
                                    ICE1712_VX442_CODEC_CHIP_B;
}

/*
 * change the DFS bit according rate for Delta1010
 */
static void delta_1010_set_rate_val(struct snd_ice1712 *ice, unsigned int rate)
{
        unsigned char tmp, tmp2;

        if (rate == 0)  /* no hint - S/PDIF input is master, simply return */
                return;

        guard(mutex)(&ice->gpio_mutex);
        tmp = snd_ice1712_read(ice, ICE1712_IREG_GPIO_DATA);
        tmp2 = tmp & ~ICE1712_DELTA_DFS;
        if (rate > 48000)
                tmp2 |= ICE1712_DELTA_DFS;
        if (tmp != tmp2)
                snd_ice1712_write(ice, ICE1712_IREG_GPIO_DATA, tmp2);
}

/*
 * change the rate of AK4524 on Delta 44/66, AP, 1010LT
 */
static void delta_ak4524_set_rate_val(struct snd_akm4xxx *ak, unsigned int rate)
{
        unsigned char tmp, tmp2;
        struct snd_ice1712 *ice = ak->private_data[0];

        if (rate == 0)  /* no hint - S/PDIF input is master, simply return */
                return;

        /* check before reset ak4524 to avoid unnecessary clicks */
        scoped_guard(mutex, &ice->gpio_mutex) {
                tmp = snd_ice1712_read(ice, ICE1712_IREG_GPIO_DATA);
        }
        tmp2 = tmp & ~ICE1712_DELTA_DFS; 
        if (rate > 48000)
                tmp2 |= ICE1712_DELTA_DFS;
        if (tmp == tmp2)
                return;

        /* do it again */
        snd_akm4xxx_reset(ak, 1);
        scoped_guard(mutex, &ice->gpio_mutex) {
                tmp = snd_ice1712_read(ice, ICE1712_IREG_GPIO_DATA) & ~ICE1712_DELTA_DFS;
                if (rate > 48000)
                        tmp |= ICE1712_DELTA_DFS;
                snd_ice1712_write(ice, ICE1712_IREG_GPIO_DATA, tmp);
        }
        snd_akm4xxx_reset(ak, 0);
}

/*
 * change the rate of AK4524 on VX442
 */
static void vx442_ak4524_set_rate_val(struct snd_akm4xxx *ak, unsigned int rate)
{
        unsigned char val;

        val = (rate > 48000) ? 0x65 : 0x60;
        if (snd_akm4xxx_get(ak, 0, 0x02) != val ||
            snd_akm4xxx_get(ak, 1, 0x02) != val) {
                snd_akm4xxx_reset(ak, 1);
                snd_akm4xxx_write(ak, 0, 0x02, val);
                snd_akm4xxx_write(ak, 1, 0x02, val);
                snd_akm4xxx_reset(ak, 0);
        }
}


/*
 * SPDIF ops for Delta 1010, Dio, 66
 */

/* open callback */
static void delta_open_spdif(struct snd_ice1712 *ice, struct snd_pcm_substream *substream)
{
        ice->spdif.cs8403_stream_bits = ice->spdif.cs8403_bits;
}

/* set up */
static void delta_setup_spdif(struct snd_ice1712 *ice, int rate)
{
        unsigned int tmp;
        int change;

        scoped_guard(spinlock_irqsave, &ice->reg_lock) {
                tmp = ice->spdif.cs8403_stream_bits;
                if (tmp & 0x01)         /* consumer */
                        tmp &= (tmp & 0x01) ? ~0x06 : ~0x18;
                switch (rate) {
                case 32000: tmp |= (tmp & 0x01) ? 0x04 : 0x00; break;
                case 44100: tmp |= (tmp & 0x01) ? 0x00 : 0x10; break;
                case 48000: tmp |= (tmp & 0x01) ? 0x02 : 0x08; break;
                default: tmp |= (tmp & 0x01) ? 0x00 : 0x18; break;
                }
                change = ice->spdif.cs8403_stream_bits != tmp;
                ice->spdif.cs8403_stream_bits = tmp;
        }
        if (change)
                snd_ctl_notify(ice->card, SNDRV_CTL_EVENT_MASK_VALUE, &ice->spdif.stream_ctl->id);
        snd_ice1712_delta_cs8403_spdif_write(ice, tmp);
}

#define snd_ice1712_delta1010lt_wordclock_status_info \
        snd_ctl_boolean_mono_info

static int snd_ice1712_delta1010lt_wordclock_status_get(struct snd_kcontrol *kcontrol,
                         struct snd_ctl_elem_value *ucontrol)
{
        char reg = 0x10; /* CS8427 receiver error register */
        struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);

        if (snd_i2c_sendbytes(ice->cs8427, &reg, 1) != 1)
                dev_err(ice->card->dev,
                        "unable to send register 0x%x byte to CS8427\n", reg);
        snd_i2c_readbytes(ice->cs8427, &reg, 1);
        ucontrol->value.integer.value[0] = (reg & CS8427_UNLOCK) ? 1 : 0;
        return 0;
}

static const struct snd_kcontrol_new snd_ice1712_delta1010lt_wordclock_status =
{
        .access =       (SNDRV_CTL_ELEM_ACCESS_READ),
        .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
        .name =         "Word Clock Status",
        .info =         snd_ice1712_delta1010lt_wordclock_status_info,
        .get =          snd_ice1712_delta1010lt_wordclock_status_get,
};

/*
 * initialize the chips on M-Audio cards
 */

static const struct snd_akm4xxx akm_audiophile = {
        .type = SND_AK4528,
        .num_adcs = 2,
        .num_dacs = 2,
        .ops = {
                .set_rate_val = delta_ak4524_set_rate_val
        }
};

static const struct snd_ak4xxx_private akm_audiophile_priv = {
        .caddr = 2,
        .cif = 0,
        .data_mask = ICE1712_DELTA_AP_DOUT,
        .clk_mask = ICE1712_DELTA_AP_CCLK,
        .cs_mask = ICE1712_DELTA_AP_CS_CODEC,
        .cs_addr = ICE1712_DELTA_AP_CS_CODEC,
        .cs_none = 0,
        .add_flags = ICE1712_DELTA_AP_CS_DIGITAL,
        .mask_flags = 0,
};

static const struct snd_akm4xxx akm_delta410 = {
        .type = SND_AK4529,
        .num_adcs = 2,
        .num_dacs = 8,
        .ops = {
                .set_rate_val = delta_ak4524_set_rate_val
        }
};

static const struct snd_ak4xxx_private akm_delta410_priv = {
        .caddr = 0,
        .cif = 0,
        .data_mask = ICE1712_DELTA_AP_DOUT,
        .clk_mask = ICE1712_DELTA_AP_CCLK,
        .cs_mask = ICE1712_DELTA_AP_CS_CODEC,
        .cs_addr = ICE1712_DELTA_AP_CS_CODEC,
        .cs_none = 0,
        .add_flags = ICE1712_DELTA_AP_CS_DIGITAL,
        .mask_flags = 0,
};

static const struct snd_akm4xxx akm_delta1010lt = {
        .type = SND_AK4524,
        .num_adcs = 8,
        .num_dacs = 8,
        .ops = {
                .lock = delta1010lt_ak4524_lock,
                .set_rate_val = delta_ak4524_set_rate_val
        }
};

static const struct snd_ak4xxx_private akm_delta1010lt_priv = {
        .caddr = 2,
        .cif = 0, /* the default level of the CIF pin from AK4524 */
        .data_mask = ICE1712_DELTA_1010LT_DOUT,
        .clk_mask = ICE1712_DELTA_1010LT_CCLK,
        .cs_mask = 0,
        .cs_addr = 0, /* set later */
        .cs_none = ICE1712_DELTA_1010LT_CS_NONE,
        .add_flags = 0,
        .mask_flags = 0,
};

static const struct snd_akm4xxx akm_delta66e = {
        .type = SND_AK4524,
        .num_adcs = 4,
        .num_dacs = 4,
        .ops = {
                .lock = delta66e_ak4524_lock,
                .set_rate_val = delta_ak4524_set_rate_val
        }
};

static const struct snd_ak4xxx_private akm_delta66e_priv = {
        .caddr = 2,
        .cif = 0, /* the default level of the CIF pin from AK4524 */
        .data_mask = ICE1712_DELTA_66E_DOUT,
        .clk_mask = ICE1712_DELTA_66E_CCLK,
        .cs_mask = 0,
        .cs_addr = 0, /* set later */
        .cs_none = 0,
        .add_flags = 0,
        .mask_flags = 0,
};


static const struct snd_akm4xxx akm_delta44 = {
        .type = SND_AK4524,
        .num_adcs = 4,
        .num_dacs = 4,
        .ops = {
                .lock = delta_ak4524_lock,
                .set_rate_val = delta_ak4524_set_rate_val
        }
};

static const struct snd_ak4xxx_private akm_delta44_priv = {
        .caddr = 2,
        .cif = 0, /* the default level of the CIF pin from AK4524 */
        .data_mask = ICE1712_DELTA_CODEC_SERIAL_DATA,
        .clk_mask = ICE1712_DELTA_CODEC_SERIAL_CLOCK,
        .cs_mask = 0,
        .cs_addr = 0, /* set later */
        .cs_none = 0,
        .add_flags = 0,
        .mask_flags = 0,
};

static const struct snd_akm4xxx akm_vx442 = {
        .type = SND_AK4524,
        .num_adcs = 4,
        .num_dacs = 4,
        .ops = {
                .lock = vx442_ak4524_lock,
                .set_rate_val = vx442_ak4524_set_rate_val
        }
};

static const struct snd_ak4xxx_private akm_vx442_priv = {
        .caddr = 2,
        .cif = 0,
        .data_mask = ICE1712_VX442_DOUT,
        .clk_mask = ICE1712_VX442_CCLK,
        .cs_mask = 0,
        .cs_addr = 0, /* set later */
        .cs_none = 0,
        .add_flags = 0,
        .mask_flags = 0,
};

#ifdef CONFIG_PM_SLEEP
static int snd_ice1712_delta_resume(struct snd_ice1712 *ice)
{
        unsigned char akm_img_bak[AK4XXX_IMAGE_SIZE];
        unsigned char akm_vol_bak[AK4XXX_IMAGE_SIZE];

        /* init spdif */
        switch (ice->eeprom.subvendor) {
        case ICE1712_SUBDEVICE_AUDIOPHILE:
        case ICE1712_SUBDEVICE_DELTA410:
        case ICE1712_SUBDEVICE_DELTA1010E:
        case ICE1712_SUBDEVICE_DELTA1010LT:
        case ICE1712_SUBDEVICE_VX442:
        case ICE1712_SUBDEVICE_DELTA66E:
                snd_cs8427_init(ice->i2c, ice->cs8427);
                break;
        case ICE1712_SUBDEVICE_DELTA1010:
        case ICE1712_SUBDEVICE_MEDIASTATION:
                /* nothing */
                break;
        case ICE1712_SUBDEVICE_DELTADIO2496:
        case ICE1712_SUBDEVICE_DELTA66:
                /* Set spdif defaults */
                snd_ice1712_delta_cs8403_spdif_write(ice, ice->spdif.cs8403_bits);
                break;
        }

        /* init codec and restore registers */
        if (ice->akm_codecs) {
                memcpy(akm_img_bak, ice->akm->images, sizeof(akm_img_bak));
                memcpy(akm_vol_bak, ice->akm->volumes, sizeof(akm_vol_bak));
                snd_akm4xxx_init(ice->akm);
                memcpy(ice->akm->images, akm_img_bak, sizeof(akm_img_bak));
                memcpy(ice->akm->volumes, akm_vol_bak, sizeof(akm_vol_bak));
                snd_akm4xxx_reset(ice->akm, 0);
        }

        return 0;
}

static int snd_ice1712_delta_suspend(struct snd_ice1712 *ice)
{
        if (ice->akm_codecs) /* reset & mute codec */
                snd_akm4xxx_reset(ice->akm, 1);

        return 0;
}
#endif

static int snd_ice1712_delta_init(struct snd_ice1712 *ice)
{
        int err;
        struct snd_akm4xxx *ak;
        unsigned char tmp;

        if (ice->eeprom.subvendor == ICE1712_SUBDEVICE_DELTA1010 &&
            ice->eeprom.gpiodir == 0x7b)
                ice->eeprom.subvendor = ICE1712_SUBDEVICE_DELTA1010E;

        if (ice->eeprom.subvendor == ICE1712_SUBDEVICE_DELTA66 &&
            ice->eeprom.gpiodir == 0xfb)
                ice->eeprom.subvendor = ICE1712_SUBDEVICE_DELTA66E;

        /* determine I2C, DACs and ADCs */
        switch (ice->eeprom.subvendor) {
        case ICE1712_SUBDEVICE_AUDIOPHILE:
                ice->num_total_dacs = 2;
                ice->num_total_adcs = 2;
                break;
        case ICE1712_SUBDEVICE_DELTA410:
                ice->num_total_dacs = 8;
                ice->num_total_adcs = 2;
                break;
        case ICE1712_SUBDEVICE_DELTA44:
        case ICE1712_SUBDEVICE_DELTA66:
                ice->num_total_dacs = ice->omni ? 8 : 4;
                ice->num_total_adcs = ice->omni ? 8 : 4;
                break;
        case ICE1712_SUBDEVICE_DELTA1010:
        case ICE1712_SUBDEVICE_DELTA1010E:
        case ICE1712_SUBDEVICE_DELTA1010LT:
        case ICE1712_SUBDEVICE_MEDIASTATION:
        case ICE1712_SUBDEVICE_EDIROLDA2496:
                ice->num_total_dacs = 8;
                ice->num_total_adcs = 8;
                break;
        case ICE1712_SUBDEVICE_DELTADIO2496:
                ice->num_total_dacs = 4;        /* two AK4324 codecs */
                break;
        case ICE1712_SUBDEVICE_VX442:
        case ICE1712_SUBDEVICE_DELTA66E:        /* omni not supported yet */
                ice->num_total_dacs = 4;
                ice->num_total_adcs = 4;
                break;
        }
#ifdef CONFIG_PM_SLEEP
        ice->pm_resume = snd_ice1712_delta_resume;
        ice->pm_suspend = snd_ice1712_delta_suspend;
        ice->pm_suspend_enabled = 1;
#endif
        /* initialize the SPI clock to high */
        tmp = snd_ice1712_read(ice, ICE1712_IREG_GPIO_DATA);
        tmp |= ICE1712_DELTA_AP_CCLK;
        snd_ice1712_write(ice, ICE1712_IREG_GPIO_DATA, tmp);
        udelay(5);

        /* initialize spdif */
        switch (ice->eeprom.subvendor) {
        case ICE1712_SUBDEVICE_AUDIOPHILE:
        case ICE1712_SUBDEVICE_DELTA410:
        case ICE1712_SUBDEVICE_DELTA1010E:
        case ICE1712_SUBDEVICE_DELTA1010LT:
        case ICE1712_SUBDEVICE_VX442:
        case ICE1712_SUBDEVICE_DELTA66E:
                err = snd_i2c_bus_create(ice->card, "ICE1712 GPIO 1", NULL, &ice->i2c);
                if (err < 0) {
                        dev_err(ice->card->dev, "unable to create I2C bus\n");
                        return err;
                }
                ice->i2c->private_data = ice;
                ice->i2c->ops = &ap_cs8427_i2c_ops;
                err = snd_ice1712_init_cs8427(ice, CS8427_BASE_ADDR);
                if (err < 0)
                        return err;
                break;
        case ICE1712_SUBDEVICE_DELTA1010:
        case ICE1712_SUBDEVICE_MEDIASTATION:
                ice->gpio.set_pro_rate = delta_1010_set_rate_val;
                break;
        case ICE1712_SUBDEVICE_DELTADIO2496:
                ice->gpio.set_pro_rate = delta_1010_set_rate_val;
                fallthrough;
        case ICE1712_SUBDEVICE_DELTA66:
                ice->spdif.ops.open = delta_open_spdif;
                ice->spdif.ops.setup_rate = delta_setup_spdif;
                ice->spdif.ops.default_get = delta_spdif_default_get;
                ice->spdif.ops.default_put = delta_spdif_default_put;
                ice->spdif.ops.stream_get = delta_spdif_stream_get;
                ice->spdif.ops.stream_put = delta_spdif_stream_put;
                /* Set spdif defaults */
                snd_ice1712_delta_cs8403_spdif_write(ice, ice->spdif.cs8403_bits);
                break;
        }

        /* no analog? */
        switch (ice->eeprom.subvendor) {
        case ICE1712_SUBDEVICE_DELTA1010:
        case ICE1712_SUBDEVICE_DELTA1010E:
        case ICE1712_SUBDEVICE_DELTADIO2496:
        case ICE1712_SUBDEVICE_MEDIASTATION:
                return 0;
        }

        /* second stage of initialization, analog parts and others */
        ak = ice->akm = kmalloc_obj(struct snd_akm4xxx);
        if (! ak)
                return -ENOMEM;
        ice->akm_codecs = 1;

        switch (ice->eeprom.subvendor) {
        case ICE1712_SUBDEVICE_AUDIOPHILE:
                err = snd_ice1712_akm4xxx_init(ak, &akm_audiophile, &akm_audiophile_priv, ice);
                break;
        case ICE1712_SUBDEVICE_DELTA410:
                err = snd_ice1712_akm4xxx_init(ak, &akm_delta410, &akm_delta410_priv, ice);
                break;
        case ICE1712_SUBDEVICE_DELTA1010LT:
        case ICE1712_SUBDEVICE_EDIROLDA2496:
                err = snd_ice1712_akm4xxx_init(ak, &akm_delta1010lt, &akm_delta1010lt_priv, ice);
                break;
        case ICE1712_SUBDEVICE_DELTA66:
        case ICE1712_SUBDEVICE_DELTA44:
                err = snd_ice1712_akm4xxx_init(ak, &akm_delta44, &akm_delta44_priv, ice);
                break;
        case ICE1712_SUBDEVICE_VX442:
                err = snd_ice1712_akm4xxx_init(ak, &akm_vx442, &akm_vx442_priv, ice);
                break;
        case ICE1712_SUBDEVICE_DELTA66E:
                err = snd_ice1712_akm4xxx_init(ak, &akm_delta66e, &akm_delta66e_priv, ice);
                break;
        default:
                snd_BUG();
                return -EINVAL;
        }

        return err;
}


/*
 * additional controls for M-Audio cards
 */

static const struct snd_kcontrol_new snd_ice1712_delta1010_wordclock_select =
ICE1712_GPIO(SNDRV_CTL_ELEM_IFACE_MIXER, "Word Clock Sync", 0, ICE1712_DELTA_WORD_CLOCK_SELECT, 1, 0);
static const struct snd_kcontrol_new snd_ice1712_delta1010lt_wordclock_select =
ICE1712_GPIO(SNDRV_CTL_ELEM_IFACE_MIXER, "Word Clock Sync", 0, ICE1712_DELTA_1010LT_WORDCLOCK, 0, 0);
static const struct snd_kcontrol_new snd_ice1712_delta1010_wordclock_status =
ICE1712_GPIO(SNDRV_CTL_ELEM_IFACE_MIXER, "Word Clock Status", 0, ICE1712_DELTA_WORD_CLOCK_STATUS, 1, SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE);
static const struct snd_kcontrol_new snd_ice1712_deltadio2496_spdif_in_select =
ICE1712_GPIO(SNDRV_CTL_ELEM_IFACE_MIXER, "IEC958 Input Optical", 0, ICE1712_DELTA_SPDIF_INPUT_SELECT, 0, 0);
static const struct snd_kcontrol_new snd_ice1712_delta_spdif_in_status =
ICE1712_GPIO(SNDRV_CTL_ELEM_IFACE_MIXER, "Delta IEC958 Input Status", 0, ICE1712_DELTA_SPDIF_IN_STAT, 1, SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE);


static int snd_ice1712_delta_add_controls(struct snd_ice1712 *ice)
{
        int err;

        /* 1010 and dio specific controls */
        switch (ice->eeprom.subvendor) {
        case ICE1712_SUBDEVICE_DELTA1010:
        case ICE1712_SUBDEVICE_MEDIASTATION:
                err = snd_ctl_add(ice->card, snd_ctl_new1(&snd_ice1712_delta1010_wordclock_select, ice));
                if (err < 0)
                        return err;
                err = snd_ctl_add(ice->card, snd_ctl_new1(&snd_ice1712_delta1010_wordclock_status, ice));
                if (err < 0)
                        return err;
                break;
        case ICE1712_SUBDEVICE_DELTADIO2496:
                err = snd_ctl_add(ice->card, snd_ctl_new1(&snd_ice1712_deltadio2496_spdif_in_select, ice));
                if (err < 0)
                        return err;
                break;
        case ICE1712_SUBDEVICE_DELTA1010E:
        case ICE1712_SUBDEVICE_DELTA1010LT:
                err = snd_ctl_add(ice->card, snd_ctl_new1(&snd_ice1712_delta1010lt_wordclock_select, ice));
                if (err < 0)
                        return err;
                err = snd_ctl_add(ice->card, snd_ctl_new1(&snd_ice1712_delta1010lt_wordclock_status, ice));
                if (err < 0)
                        return err;
                break;
        }

        /* normal spdif controls */
        switch (ice->eeprom.subvendor) {
        case ICE1712_SUBDEVICE_DELTA1010:
        case ICE1712_SUBDEVICE_DELTADIO2496:
        case ICE1712_SUBDEVICE_DELTA66:
        case ICE1712_SUBDEVICE_MEDIASTATION:
                err = snd_ice1712_spdif_build_controls(ice);
                if (err < 0)
                        return err;
                break;
        }

        /* spdif status in */
        switch (ice->eeprom.subvendor) {
        case ICE1712_SUBDEVICE_DELTA1010:
        case ICE1712_SUBDEVICE_DELTADIO2496:
        case ICE1712_SUBDEVICE_DELTA66:
        case ICE1712_SUBDEVICE_MEDIASTATION:
                err = snd_ctl_add(ice->card, snd_ctl_new1(&snd_ice1712_delta_spdif_in_status, ice));
                if (err < 0)
                        return err;
                break;
        }

        /* ak4524 controls */
        switch (ice->eeprom.subvendor) {
        case ICE1712_SUBDEVICE_DELTA1010LT:
        case ICE1712_SUBDEVICE_AUDIOPHILE:
        case ICE1712_SUBDEVICE_DELTA410:
        case ICE1712_SUBDEVICE_DELTA44:
        case ICE1712_SUBDEVICE_DELTA66:
        case ICE1712_SUBDEVICE_VX442:
        case ICE1712_SUBDEVICE_DELTA66E:
        case ICE1712_SUBDEVICE_EDIROLDA2496:
                err = snd_ice1712_akm4xxx_build_controls(ice);
                if (err < 0)
                        return err;
                break;
        }

        return 0;
}


/* entry point */
struct snd_ice1712_card_info snd_ice1712_delta_cards[] = {
        {
                .subvendor = ICE1712_SUBDEVICE_DELTA1010,
                .name = "M Audio Delta 1010",
                .model = "delta1010",
                .chip_init = snd_ice1712_delta_init,
                .build_controls = snd_ice1712_delta_add_controls,
        },
        {
                .subvendor = ICE1712_SUBDEVICE_DELTADIO2496,
                .name = "M Audio Delta DiO 2496",
                .model = "dio2496",
                .chip_init = snd_ice1712_delta_init,
                .build_controls = snd_ice1712_delta_add_controls,
                .no_mpu401 = 1,
        },
        {
                .subvendor = ICE1712_SUBDEVICE_DELTA66,
                .name = "M Audio Delta 66",
                .model = "delta66",
                .chip_init = snd_ice1712_delta_init,
                .build_controls = snd_ice1712_delta_add_controls,
                .no_mpu401 = 1,
        },
        {
                .subvendor = ICE1712_SUBDEVICE_DELTA44,
                .name = "M Audio Delta 44",
                .model = "delta44",
                .chip_init = snd_ice1712_delta_init,
                .build_controls = snd_ice1712_delta_add_controls,
                .no_mpu401 = 1,
        },
        {
                .subvendor = ICE1712_SUBDEVICE_AUDIOPHILE,
                .name = "M Audio Audiophile 24/96",
                .model = "audiophile",
                .chip_init = snd_ice1712_delta_init,
                .build_controls = snd_ice1712_delta_add_controls,
        },
        {
                .subvendor = ICE1712_SUBDEVICE_DELTA410,
                .name = "M Audio Delta 410",
                .model = "delta410",
                .chip_init = snd_ice1712_delta_init,
                .build_controls = snd_ice1712_delta_add_controls,
        },
        {
                .subvendor = ICE1712_SUBDEVICE_DELTA1010LT,
                .name = "M Audio Delta 1010LT",
                .model = "delta1010lt",
                .chip_init = snd_ice1712_delta_init,
                .build_controls = snd_ice1712_delta_add_controls,
        },
        {
                .subvendor = ICE1712_SUBDEVICE_VX442,
                .name = "Digigram VX442",
                .model = "vx442",
                .chip_init = snd_ice1712_delta_init,
                .build_controls = snd_ice1712_delta_add_controls,
                .no_mpu401 = 1,
        },
        {
                .subvendor = ICE1712_SUBDEVICE_MEDIASTATION,
                .name = "Lionstracs Mediastation",
                .model = "mediastation",
                .chip_init = snd_ice1712_delta_init,
                .build_controls = snd_ice1712_delta_add_controls,
        },
        {
                .subvendor = ICE1712_SUBDEVICE_EDIROLDA2496,
                .name = "Edirol DA2496",
                .model = "da2496",
                .chip_init = snd_ice1712_delta_init,
                .build_controls = snd_ice1712_delta_add_controls,
        },
        { } /* terminator */
};