[qemu.git] / hw / wm8750.c

/*
 * WM8750 audio CODEC.
 *
 * Copyright (c) 2006 Openedhand Ltd.
 * Written by Andrzej Zaborowski <[email protected]>
 *
 * This file is licensed under GNU GPL.
 */

#include "vl.h"

#define IN_PORT_N	3
#define OUT_PORT_N	3

#define CODEC		"wm8750"

struct wm_rate_s;
struct wm8750_s {
    i2c_slave i2c;
    uint8_t i2c_data[2];
    int i2c_len;
    QEMUSoundCard card;
    SWVoiceIn *adc_voice[IN_PORT_N];
    SWVoiceOut *dac_voice[OUT_PORT_N];
    int enable;
    void (*data_req)(void *, int, int);
    void *opaque;
    uint8_t data_in[4096];
    uint8_t data_out[4096];
    int idx_in, req_in;
    int idx_out, req_out;

    SWVoiceOut **out[2];
    uint8_t outvol[7], outmute[2];
    SWVoiceIn **in[2];
    uint8_t invol[4], inmute[2];

    uint8_t diff[2], pol, ds, monomix[2], alc, mute;
    uint8_t path[4], mpath[2], power, format;
    uint32_t inmask, outmask;
    const struct wm_rate_s *rate;
};

static inline void wm8750_in_load(struct wm8750_s *s)
{
    int acquired;
    if (s->idx_in + s->req_in <= sizeof(s->data_in))
        return;
    s->idx_in = audio_MAX(0, (int) sizeof(s->data_in) - s->req_in);
    acquired = AUD_read(*s->in[0], s->data_in + s->idx_in,
                    sizeof(s->data_in) - s->idx_in);
}

static inline void wm8750_out_flush(struct wm8750_s *s)
{
    int sent;
    if (!s->idx_out)
        return;
    sent = AUD_write(*s->out[0], s->data_out, s->idx_out);
    s->idx_out = 0;
}

static void wm8750_audio_in_cb(void *opaque, int avail_b)
{
    struct wm8750_s *s = (struct wm8750_s *) opaque;
    s->req_in = avail_b;
    s->data_req(s->opaque, s->req_out >> 2, avail_b >> 2);

#if 0
    wm8750_in_load(s);
#endif
}

static void wm8750_audio_out_cb(void *opaque, int free_b)
{
    struct wm8750_s *s = (struct wm8750_s *) opaque;
    wm8750_out_flush(s);

    s->req_out = free_b;
    s->data_req(s->opaque, free_b >> 2, s->req_in >> 2);
}

struct wm_rate_s {
    int adc;
    int adc_hz;
    int dac;
    int dac_hz;
};

static const struct wm_rate_s wm_rate_table[] = {
    {  256, 48000,  256, 48000 },	/* SR: 00000 */
    {  384, 48000,  384, 48000 },	/* SR: 00001 */
    {  256, 48000, 1536,  8000 },	/* SR: 00010 */
    {  384, 48000, 2304,  8000 },	/* SR: 00011 */
    { 1536,  8000,  256, 48000 },	/* SR: 00100 */
    { 2304,  8000,  384, 48000 },	/* SR: 00101 */
    { 1536,  8000, 1536,  8000 },	/* SR: 00110 */
    { 2304,  8000, 2304,  8000 },	/* SR: 00111 */
    { 1024, 12000, 1024, 12000 },	/* SR: 01000 */
    { 1526, 12000, 1536, 12000 },	/* SR: 01001 */
    {  768, 16000,  768, 16000 },	/* SR: 01010 */
    { 1152, 16000, 1152, 16000 },	/* SR: 01011 */
    {  384, 32000,  384, 32000 },	/* SR: 01100 */
    {  576, 32000,  576, 32000 },	/* SR: 01101 */
    {  128, 96000,  128, 96000 },	/* SR: 01110 */
    {  192, 96000,  192, 96000 },	/* SR: 01111 */
    {  256, 44100,  256, 44100 },	/* SR: 10000 */
    {  384, 44100,  384, 44100 },	/* SR: 10001 */
    {  256, 44100, 1408,  8018 },	/* SR: 10010 */
    {  384, 44100, 2112,  8018 },	/* SR: 10011 */
    { 1408,  8018,  256, 44100 },	/* SR: 10100 */
    { 2112,  8018,  384, 44100 },	/* SR: 10101 */
    { 1408,  8018, 1408,  8018 },	/* SR: 10110 */
    { 2112,  8018, 2112,  8018 },	/* SR: 10111 */
    { 1024, 11025, 1024, 11025 },	/* SR: 11000 */
    { 1536, 11025, 1536, 11025 },	/* SR: 11001 */
    {  512, 22050,  512, 22050 },	/* SR: 11010 */
    {  768, 22050,  768, 22050 },	/* SR: 11011 */
    {  512, 24000,  512, 24000 },	/* SR: 11100 */
    {  768, 24000,  768, 24000 },	/* SR: 11101 */
    {  128, 88200,  128, 88200 },	/* SR: 11110 */
    {  192, 88200,  128, 88200 },	/* SR: 11111 */
};

void wm8750_set_format(struct wm8750_s *s)
{
    int i;
    audsettings_t in_fmt;
    audsettings_t out_fmt;
    audsettings_t monoout_fmt;

    wm8750_out_flush(s);

    if (s->in[0] && *s->in[0])
        AUD_set_active_in(*s->in[0], 0);
    if (s->out[0] && *s->out[0])
        AUD_set_active_out(*s->out[0], 0);

    for (i = 0; i < IN_PORT_N; i ++)
        if (s->adc_voice[i]) {
            AUD_close_in(&s->card, s->adc_voice[i]);
            s->adc_voice[i] = 0;
        }
    for (i = 0; i < OUT_PORT_N; i ++)
        if (s->dac_voice[i]) {
            AUD_close_out(&s->card, s->dac_voice[i]);
            s->dac_voice[i] = 0;
        }

    if (!s->enable)
        return;

    /* Setup input */
    in_fmt.endianness = 0;
    in_fmt.nchannels = 2;
    in_fmt.freq = s->rate->adc_hz;
    in_fmt.fmt = AUD_FMT_S16;

    s->adc_voice[0] = AUD_open_in(&s->card, s->adc_voice[0],
                    CODEC ".input1", s, wm8750_audio_in_cb, &in_fmt);
    s->adc_voice[1] = AUD_open_in(&s->card, s->adc_voice[1],
                    CODEC ".input2", s, wm8750_audio_in_cb, &in_fmt);
    s->adc_voice[2] = AUD_open_in(&s->card, s->adc_voice[2],
                    CODEC ".input3", s, wm8750_audio_in_cb, &in_fmt);

    /* Setup output */
    out_fmt.endianness = 0;
    out_fmt.nchannels = 2;
    out_fmt.freq = s->rate->dac_hz;
    out_fmt.fmt = AUD_FMT_S16;
    monoout_fmt.endianness = 0;
    monoout_fmt.nchannels = 1;
    monoout_fmt.freq = s->rate->dac_hz;
    monoout_fmt.fmt = AUD_FMT_S16;

    s->dac_voice[0] = AUD_open_out(&s->card, s->dac_voice[0],
                    CODEC ".speaker", s, wm8750_audio_out_cb, &out_fmt);
    s->dac_voice[1] = AUD_open_out(&s->card, s->dac_voice[1],
                    CODEC ".headphone", s, wm8750_audio_out_cb, &out_fmt);
    /* MONOMIX is also in stereo for simplicity */
    s->dac_voice[2] = AUD_open_out(&s->card, s->dac_voice[2],
                    CODEC ".monomix", s, wm8750_audio_out_cb, &out_fmt);
    /* no sense emulating OUT3 which is a mix of other outputs */

    /* We should connect the left and right channels to their
     * respective inputs/outputs but we have completely no need
     * for mixing or combining paths to different ports, so we
     * connect both channels to where the left channel is routed.  */
    if (s->in[0] && *s->in[0])
        AUD_set_active_in(*s->in[0], 1);
    if (s->out[0] && *s->out[0])
        AUD_set_active_out(*s->out[0], 1);
}

void inline wm8750_mask_update(struct wm8750_s *s)
{
#define R_ONLY	0x0000ffff
#define L_ONLY	0xffff0000
#define BOTH	(R_ONLY | L_ONLY)
#define NONE	(R_ONLY & L_ONLY)
    s->inmask =
            (s->inmute[0] ? R_ONLY : BOTH) &
            (s->inmute[1] ? L_ONLY : BOTH) &
            (s->mute ? NONE : BOTH);
    s->outmask =
            (s->outmute[0] ? R_ONLY : BOTH) &
            (s->outmute[1] ? L_ONLY : BOTH) &
            (s->mute ? NONE : BOTH);
}

void wm8750_reset(i2c_slave *i2c)
{
    struct wm8750_s *s = (struct wm8750_s *) i2c;
    s->enable = 0;
    wm8750_set_format(s);
    s->diff[0] = 0;
    s->diff[1] = 0;
    s->ds = 0;
    s->alc = 0;
    s->in[0] = &s->adc_voice[0];
    s->invol[0] = 0x17;
    s->invol[1] = 0x17;
    s->invol[2] = 0xc3;
    s->invol[3] = 0xc3;
    s->out[0] = &s->dac_voice[0];
    s->outvol[0] = 0xff;
    s->outvol[1] = 0xff;
    s->outvol[2] = 0x79;
    s->outvol[3] = 0x79;
    s->outvol[4] = 0x79;
    s->outvol[5] = 0x79;
    s->inmute[0] = 0;
    s->inmute[1] = 0;
    s->outmute[0] = 0;
    s->outmute[1] = 0;
    s->mute = 1;
    s->path[0] = 0;
    s->path[1] = 0;
    s->path[2] = 0;
    s->path[3] = 0;
    s->mpath[0] = 0;
    s->mpath[1] = 0;
    s->format = 0x0a;
    s->idx_in = sizeof(s->data_in);
    s->req_in = 0;
    s->idx_out = 0;
    s->req_out = 0;
    wm8750_mask_update(s);
    s->i2c_len = 0;
}

static void wm8750_event(i2c_slave *i2c, enum i2c_event event)
{
    struct wm8750_s *s = (struct wm8750_s *) i2c;

    switch (event) {
    case I2C_START_SEND:
        s->i2c_len = 0;
        break;
    case I2C_FINISH:
#ifdef VERBOSE
        if (s->i2c_len < 2)
            printf("%s: message too short (%i bytes)\n",
                            __FUNCTION__, s->i2c_len);
#endif
        break;
    default:
        break;
    }
}

#define WM8750_LINVOL	0x00
#define WM8750_RINVOL	0x01
#define WM8750_LOUT1V	0x02
#define WM8750_ROUT1V	0x03
#define WM8750_ADCDAC	0x05
#define WM8750_IFACE	0x07
#define WM8750_SRATE	0x08
#define WM8750_LDAC	0x0a
#define WM8750_RDAC	0x0b
#define WM8750_BASS	0x0c
#define WM8750_TREBLE	0x0d
#define WM8750_RESET	0x0f
#define WM8750_3D	0x10
#define WM8750_ALC1	0x11
#define WM8750_ALC2	0x12
#define WM8750_ALC3	0x13
#define WM8750_NGATE	0x14
#define WM8750_LADC	0x15
#define WM8750_RADC	0x16
#define WM8750_ADCTL1	0x17
#define WM8750_ADCTL2	0x18
#define WM8750_PWR1	0x19
#define WM8750_PWR2	0x1a
#define WM8750_ADCTL3	0x1b
#define WM8750_ADCIN	0x1f
#define WM8750_LADCIN	0x20
#define WM8750_RADCIN	0x21
#define WM8750_LOUTM1	0x22
#define WM8750_LOUTM2	0x23
#define WM8750_ROUTM1	0x24
#define WM8750_ROUTM2	0x25
#define WM8750_MOUTM1	0x26
#define WM8750_MOUTM2	0x27
#define WM8750_LOUT2V	0x28
#define WM8750_ROUT2V	0x29
#define WM8750_MOUTV	0x2a

static int wm8750_tx(i2c_slave *i2c, uint8_t data)
{
    struct wm8750_s *s = (struct wm8750_s *) i2c;
    uint8_t cmd;
    uint16_t value;

    if (s->i2c_len >= 2) {
        printf("%s: long message (%i bytes)\n", __FUNCTION__, s->i2c_len);
#ifdef VERBOSE
        return 1;
#endif
    }
    s->i2c_data[s->i2c_len ++] = data;
    if (s->i2c_len != 2)
        return 0;

    cmd = s->i2c_data[0] >> 1;
    value = ((s->i2c_data[0] << 8) | s->i2c_data[1]) & 0x1ff;

    switch (cmd) {
    case WM8750_LADCIN:	/* ADC Signal Path Control (Left) */
        s->diff[0] = (((value >> 6) & 3) == 3);	/* LINSEL */
        if (s->diff[0])
            s->in[0] = &s->adc_voice[0 + s->ds * 1];
        else
            s->in[0] = &s->adc_voice[((value >> 6) & 3) * 1 + 0];
        break;

    case WM8750_RADCIN:	/* ADC Signal Path Control (Right) */
        s->diff[1] = (((value >> 6) & 3) == 3);	/* RINSEL */
        if (s->diff[1])
            s->in[1] = &s->adc_voice[0 + s->ds * 1];
        else
            s->in[1] = &s->adc_voice[((value >> 6) & 3) * 1 + 0];
        break;

    case WM8750_ADCIN:	/* ADC Input Mode */
        s->ds = (value >> 8) & 1;	/* DS */
        if (s->diff[0])
            s->in[0] = &s->adc_voice[0 + s->ds * 1];
        if (s->diff[1])
            s->in[1] = &s->adc_voice[0 + s->ds * 1];
        s->monomix[0] = (value >> 6) & 3;	/* MONOMIX */
        break;

    case WM8750_ADCTL1:	/* Additional Control (1) */
        s->monomix[1] = (value >> 1) & 1;	/* DMONOMIX */
        break;

    case WM8750_PWR1:	/* Power Management (1) */
        s->enable = ((value >> 6) & 7) == 3;	/* VMIDSEL, VREF */
        wm8750_set_format(s);
        break;

    case WM8750_LINVOL:	/* Left Channel PGA */
        s->invol[0] = value & 0x3f;		/* LINVOL */
        s->inmute[0] = (value >> 7) & 1;	/* LINMUTE */
        wm8750_mask_update(s);
        break;

    case WM8750_RINVOL:	/* Right Channel PGA */
        s->invol[1] = value & 0x3f;		/* RINVOL */
        s->inmute[1] = (value >> 7) & 1;	/* RINMUTE */
        wm8750_mask_update(s);
        break;

    case WM8750_ADCDAC:	/* ADC and DAC Control */
        s->pol = (value >> 5) & 3;		/* ADCPOL */
        s->mute = (value >> 3) & 1;		/* DACMU */
        wm8750_mask_update(s);
        break;

    case WM8750_ADCTL3:	/* Additional Control (3) */
        break;

    case WM8750_LADC:	/* Left ADC Digital Volume */
        s->invol[2] = value & 0xff;		/* LADCVOL */
        break;

    case WM8750_RADC:	/* Right ADC Digital Volume */
        s->invol[3] = value & 0xff;		/* RADCVOL */
        break;

    case WM8750_ALC1:	/* ALC Control (1) */
        s->alc = (value >> 7) & 3;		/* ALCSEL */
        break;

    case WM8750_NGATE:	/* Noise Gate Control */
    case WM8750_3D:	/* 3D enhance */
        break;

    case WM8750_LDAC:	/* Left Channel Digital Volume */
        s->outvol[0] = value & 0xff;		/* LDACVOL */
        break;

    case WM8750_RDAC:	/* Right Channel Digital Volume */
        s->outvol[1] = value & 0xff;		/* RDACVOL */
        break;

    case WM8750_BASS:	/* Bass Control */
        break;

    case WM8750_LOUTM1:	/* Left Mixer Control (1) */
        s->path[0] = (value >> 8) & 1;		/* LD2LO */
        break;

    case WM8750_LOUTM2:	/* Left Mixer Control (2) */
        s->path[1] = (value >> 8) & 1;		/* RD2LO */
        break;

    case WM8750_ROUTM1:	/* Right Mixer Control (1) */
        s->path[2] = (value >> 8) & 1;		/* LD2RO */
        break;

    case WM8750_ROUTM2:	/* Right Mixer Control (2) */
        s->path[3] = (value >> 8) & 1;		/* RD2RO */
        break;

    case WM8750_MOUTM1:	/* Mono Mixer Control (1) */
        s->mpath[0] = (value >> 8) & 1;		/* LD2MO */
        break;

    case WM8750_MOUTM2:	/* Mono Mixer Control (2) */
        s->mpath[1] = (value >> 8) & 1;		/* RD2MO */
        break;

    case WM8750_LOUT1V:	/* LOUT1 Volume */
        s->outvol[2] = value & 0x7f;		/* LOUT2VOL */
        break;

    case WM8750_LOUT2V:	/* LOUT2 Volume */
        s->outvol[4] = value & 0x7f;		/* LOUT2VOL */
        break;

    case WM8750_ROUT1V:	/* ROUT1 Volume */
        s->outvol[3] = value & 0x7f;		/* ROUT2VOL */
        break;

    case WM8750_ROUT2V:	/* ROUT2 Volume */
        s->outvol[5] = value & 0x7f;		/* ROUT2VOL */
        break;

    case WM8750_MOUTV:	/* MONOOUT Volume */
        s->outvol[6] = value & 0x7f;		/* MONOOUTVOL */
        break;

    case WM8750_ADCTL2:	/* Additional Control (2) */
        break;

    case WM8750_PWR2:	/* Power Management (2) */
        s->power = value & 0x7e;
        break;

    case WM8750_IFACE:	/* Digital Audio Interface Format */
#ifdef VERBOSE
        if (value & 0x40)			/* MS */
            printf("%s: attempt to enable Master Mode\n", __FUNCTION__);
#endif
        s->format = value;
        wm8750_set_format(s);
        break;

    case WM8750_SRATE:	/* Clocking and Sample Rate Control */
        s->rate = &wm_rate_table[(value >> 1) & 0x1f];
        wm8750_set_format(s);
        break;

    case WM8750_RESET:	/* Reset */
        wm8750_reset(&s->i2c);
        break;

#ifdef VERBOSE
    default:
        printf("%s: unknown register %02x\n", __FUNCTION__, cmd);
#endif
    }

    return 0;
}

static int wm8750_rx(i2c_slave *i2c)
{
    return 0x00;
}

static void wm8750_save(QEMUFile *f, void *opaque)
{
    struct wm8750_s *s = (struct wm8750_s *) opaque;
    int i;
    qemu_put_8s(f, &s->i2c_data[0]);
    qemu_put_8s(f, &s->i2c_data[1]);
    qemu_put_be32(f, s->i2c_len);
    qemu_put_be32(f, s->enable);
    qemu_put_be32(f, s->idx_in);
    qemu_put_be32(f, s->req_in);
    qemu_put_be32(f, s->idx_out);
    qemu_put_be32(f, s->req_out);

    for (i = 0; i < 7; i ++)
        qemu_put_8s(f, &s->outvol[i]);
    for (i = 0; i < 2; i ++)
        qemu_put_8s(f, &s->outmute[i]);
    for (i = 0; i < 4; i ++)
        qemu_put_8s(f, &s->invol[i]);
    for (i = 0; i < 2; i ++)
        qemu_put_8s(f, &s->inmute[i]);

    for (i = 0; i < 2; i ++)
        qemu_put_8s(f, &s->diff[i]);
    qemu_put_8s(f, &s->pol);
    qemu_put_8s(f, &s->ds);
    for (i = 0; i < 2; i ++)
        qemu_put_8s(f, &s->monomix[i]);
    qemu_put_8s(f, &s->alc);
    qemu_put_8s(f, &s->mute);
    for (i = 0; i < 4; i ++)
        qemu_put_8s(f, &s->path[i]);
    for (i = 0; i < 2; i ++)
        qemu_put_8s(f, &s->mpath[i]);
    qemu_put_8s(f, &s->format);
    qemu_put_8s(f, &s->power);
    qemu_put_be32s(f, &s->inmask);
    qemu_put_be32s(f, &s->outmask);
    qemu_put_byte(f, (s->rate - wm_rate_table) / sizeof(*s->rate));
    i2c_slave_save(f, &s->i2c);
}

static int wm8750_load(QEMUFile *f, void *opaque, int version_id)
{
    struct wm8750_s *s = (struct wm8750_s *) opaque;
    int i;
    qemu_get_8s(f, &s->i2c_data[0]);
    qemu_get_8s(f, &s->i2c_data[1]);
    s->i2c_len = qemu_get_be32(f);
    s->enable = qemu_get_be32(f);
    s->idx_in = qemu_get_be32(f);
    s->req_in = qemu_get_be32(f);
    s->idx_out = qemu_get_be32(f);
    s->req_out = qemu_get_be32(f);

    for (i = 0; i < 7; i ++)
        qemu_get_8s(f, &s->outvol[i]);
    for (i = 0; i < 2; i ++)
        qemu_get_8s(f, &s->outmute[i]);
    for (i = 0; i < 4; i ++)
        qemu_get_8s(f, &s->invol[i]);
    for (i = 0; i < 2; i ++)
        qemu_get_8s(f, &s->inmute[i]);

    for (i = 0; i < 2; i ++)
        qemu_get_8s(f, &s->diff[i]);
    qemu_get_8s(f, &s->pol);
    qemu_get_8s(f, &s->ds);
    for (i = 0; i < 2; i ++)
        qemu_get_8s(f, &s->monomix[i]);
    qemu_get_8s(f, &s->alc);
    qemu_get_8s(f, &s->mute);
    for (i = 0; i < 4; i ++)
        qemu_get_8s(f, &s->path[i]);
    for (i = 0; i < 2; i ++)
        qemu_get_8s(f, &s->mpath[i]);
    qemu_get_8s(f, &s->format);
    qemu_get_8s(f, &s->power);
    qemu_get_be32s(f, &s->inmask);
    qemu_get_be32s(f, &s->outmask);
    s->rate = &wm_rate_table[(uint8_t) qemu_get_byte(f) & 0x1f];
    i2c_slave_load(f, &s->i2c);
    return 0;
}

static int wm8750_iid = 0;

i2c_slave *wm8750_init(i2c_bus *bus, AudioState *audio)
{
    struct wm8750_s *s = (struct wm8750_s *)
            i2c_slave_init(bus, 0, sizeof(struct wm8750_s));
    s->i2c.event = wm8750_event;
    s->i2c.recv = wm8750_rx;
    s->i2c.send = wm8750_tx;

    AUD_register_card(audio, CODEC, &s->card);
    wm8750_reset(&s->i2c);

    register_savevm(CODEC, wm8750_iid ++, 0, wm8750_save, wm8750_load, s);

    return &s->i2c;
}

void wm8750_fini(i2c_slave *i2c)
{
    struct wm8750_s *s = (struct wm8750_s *) i2c;
    wm8750_reset(&s->i2c);
    AUD_remove_card(&s->card);
    qemu_free(s);
}

void wm8750_data_req_set(i2c_slave *i2c,
                void (*data_req)(void *, int, int), void *opaque)
{
    struct wm8750_s *s = (struct wm8750_s *) i2c;
    s->data_req = data_req;
    s->opaque = opaque;
}

void wm8750_dac_dat(void *opaque, uint32_t sample)
{
    struct wm8750_s *s = (struct wm8750_s *) opaque;
    uint32_t *data = (uint32_t *) &s->data_out[s->idx_out];
    *data = sample & s->outmask;
    s->req_out -= 4;
    s->idx_out += 4;
    if (s->idx_out >= sizeof(s->data_out) || s->req_out <= 0)
        wm8750_out_flush(s);
}

uint32_t wm8750_adc_dat(void *opaque)
{
    struct wm8750_s *s = (struct wm8750_s *) opaque;
    uint32_t *data;
    if (s->idx_in >= sizeof(s->data_in))
        wm8750_in_load(s);
    data = (uint32_t *) &s->data_in[s->idx_in];
    s->req_in -= 4;
    s->idx_in += 4;
    return *data & s->inmask;
}
Commit	Line	Data
adb86c37 AZ	1	/*
	2	* WM8750 audio CODEC.
	3	*
	4	* Copyright (c) 2006 Openedhand Ltd.
	5	* Written by Andrzej Zaborowski <[email protected]>
	6	*
	7	* This file is licensed under GNU GPL.
	8	*/
	9
	10	#include "vl.h"
	11
	12	#define IN_PORT_N 3
	13	#define OUT_PORT_N 3
	14
	15	#define CODEC "wm8750"
	16
	17	struct wm_rate_s;
	18	struct wm8750_s {
	19	i2c_slave i2c;
	20	uint8_t i2c_data[2];
	21	int i2c_len;
	22	QEMUSoundCard card;
	23	SWVoiceIn *adc_voice[IN_PORT_N];
	24	SWVoiceOut *dac_voice[OUT_PORT_N];
	25	int enable;
	26	void (data_req)(void , int, int);
	27	void *opaque;
	28	uint8_t data_in[4096];
	29	uint8_t data_out[4096];
	30	int idx_in, req_in;
	31	int idx_out, req_out;
	32
	33	SWVoiceOut **out[2];
	34	uint8_t outvol[7], outmute[2];
	35	SWVoiceIn **in[2];
	36	uint8_t invol[4], inmute[2];
	37
	38	uint8_t diff[2], pol, ds, monomix[2], alc, mute;
	39	uint8_t path[4], mpath[2], power, format;
	40	uint32_t inmask, outmask;
	41	const struct wm_rate_s *rate;
	42	};
	43
	44	static inline void wm8750_in_load(struct wm8750_s *s)
	45	{
	46	int acquired;
	47	if (s->idx_in + s->req_in <= sizeof(s->data_in))
	48	return;
	49	s->idx_in = audio_MAX(0, (int) sizeof(s->data_in) - s->req_in);
	50	acquired = AUD_read(*s->in[0], s->data_in + s->idx_in,
	51	sizeof(s->data_in) - s->idx_in);
	52	}
	53
	54	static inline void wm8750_out_flush(struct wm8750_s *s)
	55	{
	56	int sent;
	57	if (!s->idx_out)
	58	return;
	59	sent = AUD_write(*s->out[0], s->data_out, s->idx_out);
	60	s->idx_out = 0;
	61	}
	62
	63	static void wm8750_audio_in_cb(void *opaque, int avail_b)
	64	{
65	struct wm8750_s s = (struct wm8750_s ) opaque;
66	s->req_in = avail_b;
67	s->data_req(s->opaque, s->req_out >> 2, avail_b >> 2);
68
69	#if 0
70	wm8750_in_load(s);
71	#endif
72	}
73
74	static void wm8750_audio_out_cb(void *opaque, int free_b)
75	{
76	struct wm8750_s s = (struct wm8750_s ) opaque;
77	wm8750_out_flush(s);
78
79	s->req_out = free_b;
80	s->data_req(s->opaque, free_b >> 2, s->req_in >> 2);
81	}
82
83	struct wm_rate_s {
84	int adc;
85	int adc_hz;
86	int dac;
87	int dac_hz;
88	};
89
90	static const struct wm_rate_s wm_rate_table[] = {
91	{ 256, 48000, 256, 48000 }, /* SR: 00000 */
92	{ 384, 48000, 384, 48000 }, /* SR: 00001 */
93	{ 256, 48000, 1536, 8000 }, /* SR: 00010 */
94	{ 384, 48000, 2304, 8000 }, /* SR: 00011 */
95	{ 1536, 8000, 256, 48000 }, /* SR: 00100 */
96	{ 2304, 8000, 384, 48000 }, /* SR: 00101 */
97	{ 1536, 8000, 1536, 8000 }, /* SR: 00110 */
98	{ 2304, 8000, 2304, 8000 }, /* SR: 00111 */
99	{ 1024, 12000, 1024, 12000 }, /* SR: 01000 */
100	{ 1526, 12000, 1536, 12000 }, /* SR: 01001 */
101	{ 768, 16000, 768, 16000 }, /* SR: 01010 */
102	{ 1152, 16000, 1152, 16000 }, /* SR: 01011 */
103	{ 384, 32000, 384, 32000 }, /* SR: 01100 */
104	{ 576, 32000, 576, 32000 }, /* SR: 01101 */
105	{ 128, 96000, 128, 96000 }, /* SR: 01110 */
106	{ 192, 96000, 192, 96000 }, /* SR: 01111 */
107	{ 256, 44100, 256, 44100 }, /* SR: 10000 */
108	{ 384, 44100, 384, 44100 }, /* SR: 10001 */
109	{ 256, 44100, 1408, 8018 }, /* SR: 10010 */
110	{ 384, 44100, 2112, 8018 }, /* SR: 10011 */
111	{ 1408, 8018, 256, 44100 }, /* SR: 10100 */
112	{ 2112, 8018, 384, 44100 }, /* SR: 10101 */
113	{ 1408, 8018, 1408, 8018 }, /* SR: 10110 */
114	{ 2112, 8018, 2112, 8018 }, /* SR: 10111 */
115	{ 1024, 11025, 1024, 11025 }, /* SR: 11000 */
116	{ 1536, 11025, 1536, 11025 }, /* SR: 11001 */
117	{ 512, 22050, 512, 22050 }, /* SR: 11010 */
118	{ 768, 22050, 768, 22050 }, /* SR: 11011 */
119	{ 512, 24000, 512, 24000 }, /* SR: 11100 */
120	{ 768, 24000, 768, 24000 }, /* SR: 11101 */
121	{ 128, 88200, 128, 88200 }, /* SR: 11110 */
122	{ 192, 88200, 128, 88200 }, /* SR: 11111 */
123	};
124
125	void wm8750_set_format(struct wm8750_s *s)
126	{
127	int i;
128	audsettings_t in_fmt;
129	audsettings_t out_fmt;
130	audsettings_t monoout_fmt;
131
132	wm8750_out_flush(s);
133
134	if (s->in[0] && *s->in[0])
135	AUD_set_active_in(*s->in[0], 0);
136	if (s->out[0] && *s->out[0])
137	AUD_set_active_out(*s->out[0], 0);
138
139	for (i = 0; i < IN_PORT_N; i ++)
140	if (s->adc_voice[i]) {
141	AUD_close_in(&s->card, s->adc_voice[i]);
142	s->adc_voice[i] = 0;
143	}
144	for (i = 0; i < OUT_PORT_N; i ++)
145	if (s->dac_voice[i]) {
146	AUD_close_out(&s->card, s->dac_voice[i]);
147	s->dac_voice[i] = 0;
148	}
149
150	if (!s->enable)
151	return;
152
153	/* Setup input */
154	in_fmt.endianness = 0;
155	in_fmt.nchannels = 2;
156	in_fmt.freq = s->rate->adc_hz;
157	in_fmt.fmt = AUD_FMT_S16;
158
159	s->adc_voice[0] = AUD_open_in(&s->card, s->adc_voice[0],
160	CODEC ".input1", s, wm8750_audio_in_cb, &in_fmt);
161	s->adc_voice[1] = AUD_open_in(&s->card, s->adc_voice[1],
162	CODEC ".input2", s, wm8750_audio_in_cb, &in_fmt);
163	s->adc_voice[2] = AUD_open_in(&s->card, s->adc_voice[2],
164	CODEC ".input3", s, wm8750_audio_in_cb, &in_fmt);
165
166	/* Setup output */
167	out_fmt.endianness = 0;
168	out_fmt.nchannels = 2;
169	out_fmt.freq = s->rate->dac_hz;
170	out_fmt.fmt = AUD_FMT_S16;
171	monoout_fmt.endianness = 0;
172	monoout_fmt.nchannels = 1;
173	monoout_fmt.freq = s->rate->dac_hz;
174	monoout_fmt.fmt = AUD_FMT_S16;
175
176	s->dac_voice[0] = AUD_open_out(&s->card, s->dac_voice[0],
177	CODEC ".speaker", s, wm8750_audio_out_cb, &out_fmt);
178	s->dac_voice[1] = AUD_open_out(&s->card, s->dac_voice[1],
179	CODEC ".headphone", s, wm8750_audio_out_cb, &out_fmt);
180	/* MONOMIX is also in stereo for simplicity */
181	s->dac_voice[2] = AUD_open_out(&s->card, s->dac_voice[2],
182	CODEC ".monomix", s, wm8750_audio_out_cb, &out_fmt);
183	/* no sense emulating OUT3 which is a mix of other outputs */
184
185	/* We should connect the left and right channels to their
186	* respective inputs/outputs but we have completely no need
187	* for mixing or combining paths to different ports, so we
188	* connect both channels to where the left channel is routed. */
189	if (s->in[0] && *s->in[0])
190	AUD_set_active_in(*s->in[0], 1);
191	if (s->out[0] && *s->out[0])
192	AUD_set_active_out(*s->out[0], 1);
193	}
194
195	void inline wm8750_mask_update(struct wm8750_s *s)
196	{
197	#define R_ONLY 0x0000ffff
198	#define L_ONLY 0xffff0000
199	#define BOTH (R_ONLY \| L_ONLY)
200	#define NONE (R_ONLY & L_ONLY)
201	s->inmask =
202	(s->inmute[0] ? R_ONLY : BOTH) &
203	(s->inmute[1] ? L_ONLY : BOTH) &
204	(s->mute ? NONE : BOTH);
205	s->outmask =
206	(s->outmute[0] ? R_ONLY : BOTH) &
207	(s->outmute[1] ? L_ONLY : BOTH) &
208	(s->mute ? NONE : BOTH);
209	}
210
211	void wm8750_reset(i2c_slave *i2c)
212	{
213	struct wm8750_s s = (struct wm8750_s ) i2c;
214	s->enable = 0;
215	wm8750_set_format(s);
216	s->diff[0] = 0;
217	s->diff[1] = 0;
218	s->ds = 0;
219	s->alc = 0;
220	s->in[0] = &s->adc_voice[0];
221	s->invol[0] = 0x17;
222	s->invol[1] = 0x17;
223	s->invol[2] = 0xc3;
224	s->invol[3] = 0xc3;
225	s->out[0] = &s->dac_voice[0];
226	s->outvol[0] = 0xff;
227	s->outvol[1] = 0xff;
228	s->outvol[2] = 0x79;
229	s->outvol[3] = 0x79;
230	s->outvol[4] = 0x79;
231	s->outvol[5] = 0x79;
232	s->inmute[0] = 0;
233	s->inmute[1] = 0;
234	s->outmute[0] = 0;
235	s->outmute[1] = 0;
236	s->mute = 1;
237	s->path[0] = 0;
238	s->path[1] = 0;
239	s->path[2] = 0;
240	s->path[3] = 0;
241	s->mpath[0] = 0;
242	s->mpath[1] = 0;
243	s->format = 0x0a;
244	s->idx_in = sizeof(s->data_in);
245	s->req_in = 0;
246	s->idx_out = 0;
247	s->req_out = 0;
248	wm8750_mask_update(s);
249	s->i2c_len = 0;
250	}
251
252	static void wm8750_event(i2c_slave *i2c, enum i2c_event event)
253	{
254	struct wm8750_s s = (struct wm8750_s ) i2c;
255
256	switch (event) {
257	case I2C_START_SEND:
258	s->i2c_len = 0;
259	break;
260	case I2C_FINISH:
261	#ifdef VERBOSE
262	if (s->i2c_len < 2)
263	printf("%s: message too short (%i bytes)\n",
264	__FUNCTION__, s->i2c_len);
265	#endif
266	break;
267	default:
268	break;
269	}
270	}
271
272	#define WM8750_LINVOL 0x00
273	#define WM8750_RINVOL 0x01
274	#define WM8750_LOUT1V 0x02
275	#define WM8750_ROUT1V 0x03
276	#define WM8750_ADCDAC 0x05
277	#define WM8750_IFACE 0x07
278	#define WM8750_SRATE 0x08
279	#define WM8750_LDAC 0x0a
280	#define WM8750_RDAC 0x0b
281	#define WM8750_BASS 0x0c
282	#define WM8750_TREBLE 0x0d
283	#define WM8750_RESET 0x0f
284	#define WM8750_3D 0x10
285	#define WM8750_ALC1 0x11
286	#define WM8750_ALC2 0x12
287	#define WM8750_ALC3 0x13
288	#define WM8750_NGATE 0x14
289	#define WM8750_LADC 0x15
290	#define WM8750_RADC 0x16
291	#define WM8750_ADCTL1 0x17
292	#define WM8750_ADCTL2 0x18
293	#define WM8750_PWR1 0x19
294	#define WM8750_PWR2 0x1a
295	#define WM8750_ADCTL3 0x1b
296	#define WM8750_ADCIN 0x1f
297	#define WM8750_LADCIN 0x20
298	#define WM8750_RADCIN 0x21
299	#define WM8750_LOUTM1 0x22
300	#define WM8750_LOUTM2 0x23
301	#define WM8750_ROUTM1 0x24
302	#define WM8750_ROUTM2 0x25
303	#define WM8750_MOUTM1 0x26
304	#define WM8750_MOUTM2 0x27
305	#define WM8750_LOUT2V 0x28
306	#define WM8750_ROUT2V 0x29
307	#define WM8750_MOUTV 0x2a
308
309	static int wm8750_tx(i2c_slave *i2c, uint8_t data)
310	{
311	struct wm8750_s s = (struct wm8750_s ) i2c;
312	uint8_t cmd;
313	uint16_t value;
314
315	if (s->i2c_len >= 2) {
316	printf("%s: long message (%i bytes)\n", __FUNCTION__, s->i2c_len);
317	#ifdef VERBOSE
318	return 1;
319	#endif
320	}
321	s->i2c_data[s->i2c_len ++] = data;
322	if (s->i2c_len != 2)
323	return 0;
324
325	cmd = s->i2c_data[0] >> 1;
326	value = ((s->i2c_data[0] << 8) \| s->i2c_data[1]) & 0x1ff;
327
328	switch (cmd) {
329	case WM8750_LADCIN: /* ADC Signal Path Control (Left) */
330	s->diff[0] = (((value >> 6) & 3) == 3); /* LINSEL */
331	if (s->diff[0])
332	s->in[0] = &s->adc_voice[0 + s->ds * 1];
333	else
334	s->in[0] = &s->adc_voice[((value >> 6) & 3) * 1 + 0];
335	break;
336
337	case WM8750_RADCIN: /* ADC Signal Path Control (Right) */
338	s->diff[1] = (((value >> 6) & 3) == 3); /* RINSEL */
339	if (s->diff[1])
340	s->in[1] = &s->adc_voice[0 + s->ds * 1];
341	else
342	s->in[1] = &s->adc_voice[((value >> 6) & 3) * 1 + 0];
343	break;
344
345	case WM8750_ADCIN: /* ADC Input Mode */
346	s->ds = (value >> 8) & 1; /* DS */
347	if (s->diff[0])
348	s->in[0] = &s->adc_voice[0 + s->ds * 1];
349	if (s->diff[1])
350	s->in[1] = &s->adc_voice[0 + s->ds * 1];
351	s->monomix[0] = (value >> 6) & 3; /* MONOMIX */
352	break;
353
354	case WM8750_ADCTL1: /* Additional Control (1) */
355	s->monomix[1] = (value >> 1) & 1; /* DMONOMIX */
356	break;
357
358	case WM8750_PWR1: /* Power Management (1) */
359	s->enable = ((value >> 6) & 7) == 3; /* VMIDSEL, VREF */
360	wm8750_set_format(s);
361	break;
362
363	case WM8750_LINVOL: /* Left Channel PGA */
364	s->invol[0] = value & 0x3f; /* LINVOL */
365	s->inmute[0] = (value >> 7) & 1; /* LINMUTE */
366	wm8750_mask_update(s);
367	break;
368
369	case WM8750_RINVOL: /* Right Channel PGA */
370	s->invol[1] = value & 0x3f; /* RINVOL */
371	s->inmute[1] = (value >> 7) & 1; /* RINMUTE */
372	wm8750_mask_update(s);
373	break;
374
375	case WM8750_ADCDAC: /* ADC and DAC Control */
376	s->pol = (value >> 5) & 3; /* ADCPOL */
377	s->mute = (value >> 3) & 1; /* DACMU */
378	wm8750_mask_update(s);
379	break;
380
381	case WM8750_ADCTL3: /* Additional Control (3) */
382	break;
383
384	case WM8750_LADC: /* Left ADC Digital Volume */
385	s->invol[2] = value & 0xff; /* LADCVOL */
386	break;
387
388	case WM8750_RADC: /* Right ADC Digital Volume */
389	s->invol[3] = value & 0xff; /* RADCVOL */
390	break;
391
392	case WM8750_ALC1: /* ALC Control (1) */
393	s->alc = (value >> 7) & 3; /* ALCSEL */
394	break;
395
396	case WM8750_NGATE: /* Noise Gate Control */
397	case WM8750_3D: /* 3D enhance */
398	break;
399
400	case WM8750_LDAC: /* Left Channel Digital Volume */
401	s->outvol[0] = value & 0xff; /* LDACVOL */
402	break;
403
404	case WM8750_RDAC: /* Right Channel Digital Volume */
405	s->outvol[1] = value & 0xff; /* RDACVOL */
406	break;
407
408	case WM8750_BASS: /* Bass Control */
409	break;
410
411	case WM8750_LOUTM1: /* Left Mixer Control (1) */
412	s->path[0] = (value >> 8) & 1; /* LD2LO */
413	break;
414
415	case WM8750_LOUTM2: /* Left Mixer Control (2) */
416	s->path[1] = (value >> 8) & 1; /* RD2LO */
417	break;
418
419	case WM8750_ROUTM1: /* Right Mixer Control (1) */
420	s->path[2] = (value >> 8) & 1; /* LD2RO */
421	break;
422
423	case WM8750_ROUTM2: /* Right Mixer Control (2) */
424	s->path[3] = (value >> 8) & 1; /* RD2RO */
425	break;
426
427	case WM8750_MOUTM1: /* Mono Mixer Control (1) */
428	s->mpath[0] = (value >> 8) & 1; /* LD2MO */
429	break;
430
431	case WM8750_MOUTM2: /* Mono Mixer Control (2) */
432	s->mpath[1] = (value >> 8) & 1; /* RD2MO */
433	break;
434
435	case WM8750_LOUT1V: /* LOUT1 Volume */
436	s->outvol[2] = value & 0x7f; /* LOUT2VOL */
437	break;
438
439	case WM8750_LOUT2V: /* LOUT2 Volume */
440	s->outvol[4] = value & 0x7f; /* LOUT2VOL */
441	break;
442
443	case WM8750_ROUT1V: /* ROUT1 Volume */
444	s->outvol[3] = value & 0x7f; /* ROUT2VOL */
445	break;
446
447	case WM8750_ROUT2V: /* ROUT2 Volume */
448	s->outvol[5] = value & 0x7f; /* ROUT2VOL */
449	break;
450
451	case WM8750_MOUTV: /* MONOOUT Volume */
452	s->outvol[6] = value & 0x7f; /* MONOOUTVOL */
453	break;
454
455	case WM8750_ADCTL2: /* Additional Control (2) */
456	break;
457
458	case WM8750_PWR2: /* Power Management (2) */
459	s->power = value & 0x7e;
460	break;
461
462	case WM8750_IFACE: /* Digital Audio Interface Format */
463	#ifdef VERBOSE
464	if (value & 0x40) /* MS */
465	printf("%s: attempt to enable Master Mode\n", __FUNCTION__);
466	#endif
467	s->format = value;
468	wm8750_set_format(s);
469	break;
470
471	case WM8750_SRATE: /* Clocking and Sample Rate Control */
472	s->rate = &wm_rate_table[(value >> 1) & 0x1f];
473	wm8750_set_format(s);
474	break;
475
476	case WM8750_RESET: /* Reset */
477	wm8750_reset(&s->i2c);
478	break;
479
480	#ifdef VERBOSE
481	default:
482	printf("%s: unknown register %02x\n", __FUNCTION__, cmd);
483	#endif
484	}
485
486	return 0;
487	}
488
489	static int wm8750_rx(i2c_slave *i2c)
490	{
491	return 0x00;
492	}
493
aa941b94 AZ	494	static void wm8750_save(QEMUFile f, void opaque)
	495	{
	496	struct wm8750_s s = (struct wm8750_s ) opaque;
	497	int i;
	498	qemu_put_8s(f, &s->i2c_data[0]);
	499	qemu_put_8s(f, &s->i2c_data[1]);
	500	qemu_put_be32(f, s->i2c_len);
	501	qemu_put_be32(f, s->enable);
	502	qemu_put_be32(f, s->idx_in);
	503	qemu_put_be32(f, s->req_in);
	504	qemu_put_be32(f, s->idx_out);
	505	qemu_put_be32(f, s->req_out);
	506
	507	for (i = 0; i < 7; i ++)
	508	qemu_put_8s(f, &s->outvol[i]);
	509	for (i = 0; i < 2; i ++)
	510	qemu_put_8s(f, &s->outmute[i]);
	511	for (i = 0; i < 4; i ++)
	512	qemu_put_8s(f, &s->invol[i]);
	513	for (i = 0; i < 2; i ++)
	514	qemu_put_8s(f, &s->inmute[i]);
	515
	516	for (i = 0; i < 2; i ++)
	517	qemu_put_8s(f, &s->diff[i]);
	518	qemu_put_8s(f, &s->pol);
	519	qemu_put_8s(f, &s->ds);
	520	for (i = 0; i < 2; i ++)
	521	qemu_put_8s(f, &s->monomix[i]);
	522	qemu_put_8s(f, &s->alc);
	523	qemu_put_8s(f, &s->mute);
	524	for (i = 0; i < 4; i ++)
	525	qemu_put_8s(f, &s->path[i]);
	526	for (i = 0; i < 2; i ++)
	527	qemu_put_8s(f, &s->mpath[i]);
	528	qemu_put_8s(f, &s->format);
	529	qemu_put_8s(f, &s->power);
	530	qemu_put_be32s(f, &s->inmask);
	531	qemu_put_be32s(f, &s->outmask);
	532	qemu_put_byte(f, (s->rate - wm_rate_table) / sizeof(*s->rate));
	533	i2c_slave_save(f, &s->i2c);
	534	}
	535
	536	static int wm8750_load(QEMUFile f, void opaque, int version_id)
	537	{
	538	struct wm8750_s s = (struct wm8750_s ) opaque;
	539	int i;
	540	qemu_get_8s(f, &s->i2c_data[0]);
	541	qemu_get_8s(f, &s->i2c_data[1]);
	542	s->i2c_len = qemu_get_be32(f);
	543	s->enable = qemu_get_be32(f);
	544	s->idx_in = qemu_get_be32(f);
	545	s->req_in = qemu_get_be32(f);
	546	s->idx_out = qemu_get_be32(f);
	547	s->req_out = qemu_get_be32(f);
	548
	549	for (i = 0; i < 7; i ++)
	550	qemu_get_8s(f, &s->outvol[i]);
	551	for (i = 0; i < 2; i ++)
	552	qemu_get_8s(f, &s->outmute[i]);
	553	for (i = 0; i < 4; i ++)
	554	qemu_get_8s(f, &s->invol[i]);
	555	for (i = 0; i < 2; i ++)
	556	qemu_get_8s(f, &s->inmute[i]);
	557
558	for (i = 0; i < 2; i ++)
559	qemu_get_8s(f, &s->diff[i]);
560	qemu_get_8s(f, &s->pol);
561	qemu_get_8s(f, &s->ds);
562	for (i = 0; i < 2; i ++)
563	qemu_get_8s(f, &s->monomix[i]);
564	qemu_get_8s(f, &s->alc);
565	qemu_get_8s(f, &s->mute);
566	for (i = 0; i < 4; i ++)
567	qemu_get_8s(f, &s->path[i]);
568	for (i = 0; i < 2; i ++)
569	qemu_get_8s(f, &s->mpath[i]);
570	qemu_get_8s(f, &s->format);
571	qemu_get_8s(f, &s->power);
572	qemu_get_be32s(f, &s->inmask);
573	qemu_get_be32s(f, &s->outmask);
574	s->rate = &wm_rate_table[(uint8_t) qemu_get_byte(f) & 0x1f];
575	i2c_slave_load(f, &s->i2c);
576	return 0;
577	}
578
579	static int wm8750_iid = 0;
580
adb86c37 AZ	581	i2c_slave wm8750_init(i2c_bus bus, AudioState *audio)
	582	{
	583	struct wm8750_s s = (struct wm8750_s )
	584	i2c_slave_init(bus, 0, sizeof(struct wm8750_s));
	585	s->i2c.event = wm8750_event;
	586	s->i2c.recv = wm8750_rx;
	587	s->i2c.send = wm8750_tx;
	588
	589	AUD_register_card(audio, CODEC, &s->card);
	590	wm8750_reset(&s->i2c);
	591
aa941b94 AZ	592	register_savevm(CODEC, wm8750_iid ++, 0, wm8750_save, wm8750_load, s);
aa941b94 AZ	593
adb86c37 AZ	594	return &s->i2c;
	595	}
	596
	597	void wm8750_fini(i2c_slave *i2c)
	598	{
	599	struct wm8750_s s = (struct wm8750_s ) i2c;
	600	wm8750_reset(&s->i2c);
	601	AUD_remove_card(&s->card);
	602	qemu_free(s);
	603	}
	604
	605	void wm8750_data_req_set(i2c_slave *i2c,
	606	void (data_req)(void , int, int), void *opaque)
	607	{
	608	struct wm8750_s s = (struct wm8750_s ) i2c;
	609	s->data_req = data_req;
	610	s->opaque = opaque;
	611	}
	612
	613	void wm8750_dac_dat(void *opaque, uint32_t sample)
	614	{
	615	struct wm8750_s s = (struct wm8750_s ) opaque;
	616	uint32_t data = (uint32_t ) &s->data_out[s->idx_out];
	617	*data = sample & s->outmask;
	618	s->req_out -= 4;
	619	s->idx_out += 4;
	620	if (s->idx_out >= sizeof(s->data_out) \|\| s->req_out <= 0)
	621	wm8750_out_flush(s);
	622	}
	623
	624	uint32_t wm8750_adc_dat(void *opaque)
	625	{
	626	struct wm8750_s s = (struct wm8750_s ) opaque;
	627	uint32_t *data;
	628	if (s->idx_in >= sizeof(s->data_in))
	629	wm8750_in_load(s);
	630	data = (uint32_t *) &s->data_in[s->idx_in];
	631	s->req_in -= 4;
	632	s->idx_in += 4;
	633	return *data & s->inmask;
	634	}