[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 "hw.h"
#include "i2c.h"
#include "audio/audio.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 */
};

static 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);
}

static 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;
}

static 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
87ecb68b PB	10	#include "hw.h"
	11	#include "i2c.h"
	12	#include "audio/audio.h"
adb86c37 AZ	13
	14	#define IN_PORT_N 3
	15	#define OUT_PORT_N 3
	16
	17	#define CODEC "wm8750"
	18
	19	struct wm_rate_s;
	20	struct wm8750_s {
	21	i2c_slave i2c;
	22	uint8_t i2c_data[2];
	23	int i2c_len;
	24	QEMUSoundCard card;
	25	SWVoiceIn *adc_voice[IN_PORT_N];
	26	SWVoiceOut *dac_voice[OUT_PORT_N];
	27	int enable;
	28	void (data_req)(void , int, int);
	29	void *opaque;
	30	uint8_t data_in[4096];
	31	uint8_t data_out[4096];
	32	int idx_in, req_in;
	33	int idx_out, req_out;
	34
	35	SWVoiceOut **out[2];
	36	uint8_t outvol[7], outmute[2];
	37	SWVoiceIn **in[2];
	38	uint8_t invol[4], inmute[2];
	39
	40	uint8_t diff[2], pol, ds, monomix[2], alc, mute;
	41	uint8_t path[4], mpath[2], power, format;
	42	uint32_t inmask, outmask;
	43	const struct wm_rate_s *rate;
	44	};
	45
	46	static inline void wm8750_in_load(struct wm8750_s *s)
	47	{
	48	int acquired;
	49	if (s->idx_in + s->req_in <= sizeof(s->data_in))
	50	return;
	51	s->idx_in = audio_MAX(0, (int) sizeof(s->data_in) - s->req_in);
	52	acquired = AUD_read(*s->in[0], s->data_in + s->idx_in,
	53	sizeof(s->data_in) - s->idx_in);
	54	}
	55
	56	static inline void wm8750_out_flush(struct wm8750_s *s)
	57	{
	58	int sent;
	59	if (!s->idx_out)
	60	return;
	61	sent = AUD_write(*s->out[0], s->data_out, s->idx_out);
	62	s->idx_out = 0;
	63	}
	64
	65	static void wm8750_audio_in_cb(void *opaque, int avail_b)
	66	{
	67	struct wm8750_s s = (struct wm8750_s ) opaque;
	68	s->req_in = avail_b;
	69	s->data_req(s->opaque, s->req_out >> 2, avail_b >> 2);
	70
	71	#if 0
	72	wm8750_in_load(s);
	73	#endif
	74	}
	75
	76	static void wm8750_audio_out_cb(void *opaque, int free_b)
77	{
78	struct wm8750_s s = (struct wm8750_s ) opaque;
79	wm8750_out_flush(s);
80
81	s->req_out = free_b;
82	s->data_req(s->opaque, free_b >> 2, s->req_in >> 2);
83	}
84
85	struct wm_rate_s {
86	int adc;
87	int adc_hz;
88	int dac;
89	int dac_hz;
90	};
91
92	static const struct wm_rate_s wm_rate_table[] = {
93	{ 256, 48000, 256, 48000 }, /* SR: 00000 */
94	{ 384, 48000, 384, 48000 }, /* SR: 00001 */
95	{ 256, 48000, 1536, 8000 }, /* SR: 00010 */
96	{ 384, 48000, 2304, 8000 }, /* SR: 00011 */
97	{ 1536, 8000, 256, 48000 }, /* SR: 00100 */
98	{ 2304, 8000, 384, 48000 }, /* SR: 00101 */
99	{ 1536, 8000, 1536, 8000 }, /* SR: 00110 */
100	{ 2304, 8000, 2304, 8000 }, /* SR: 00111 */
101	{ 1024, 12000, 1024, 12000 }, /* SR: 01000 */
102	{ 1526, 12000, 1536, 12000 }, /* SR: 01001 */
103	{ 768, 16000, 768, 16000 }, /* SR: 01010 */
104	{ 1152, 16000, 1152, 16000 }, /* SR: 01011 */
105	{ 384, 32000, 384, 32000 }, /* SR: 01100 */
106	{ 576, 32000, 576, 32000 }, /* SR: 01101 */
107	{ 128, 96000, 128, 96000 }, /* SR: 01110 */
108	{ 192, 96000, 192, 96000 }, /* SR: 01111 */
109	{ 256, 44100, 256, 44100 }, /* SR: 10000 */
110	{ 384, 44100, 384, 44100 }, /* SR: 10001 */
111	{ 256, 44100, 1408, 8018 }, /* SR: 10010 */
112	{ 384, 44100, 2112, 8018 }, /* SR: 10011 */
113	{ 1408, 8018, 256, 44100 }, /* SR: 10100 */
114	{ 2112, 8018, 384, 44100 }, /* SR: 10101 */
115	{ 1408, 8018, 1408, 8018 }, /* SR: 10110 */
116	{ 2112, 8018, 2112, 8018 }, /* SR: 10111 */
117	{ 1024, 11025, 1024, 11025 }, /* SR: 11000 */
118	{ 1536, 11025, 1536, 11025 }, /* SR: 11001 */
119	{ 512, 22050, 512, 22050 }, /* SR: 11010 */
120	{ 768, 22050, 768, 22050 }, /* SR: 11011 */
121	{ 512, 24000, 512, 24000 }, /* SR: 11100 */
122	{ 768, 24000, 768, 24000 }, /* SR: 11101 */
123	{ 128, 88200, 128, 88200 }, /* SR: 11110 */
124	{ 192, 88200, 128, 88200 }, /* SR: 11111 */
125	};
126
9596ebb7	127	static void wm8750_set_format(struct wm8750_s *s)
adb86c37 AZ	128	{
	129	int i;
	130	audsettings_t in_fmt;
	131	audsettings_t out_fmt;
	132	audsettings_t monoout_fmt;
	133
	134	wm8750_out_flush(s);
	135
	136	if (s->in[0] && *s->in[0])
	137	AUD_set_active_in(*s->in[0], 0);
	138	if (s->out[0] && *s->out[0])
	139	AUD_set_active_out(*s->out[0], 0);
	140
	141	for (i = 0; i < IN_PORT_N; i ++)
	142	if (s->adc_voice[i]) {
	143	AUD_close_in(&s->card, s->adc_voice[i]);
	144	s->adc_voice[i] = 0;
	145	}
	146	for (i = 0; i < OUT_PORT_N; i ++)
	147	if (s->dac_voice[i]) {
	148	AUD_close_out(&s->card, s->dac_voice[i]);
	149	s->dac_voice[i] = 0;
	150	}
	151
	152	if (!s->enable)
	153	return;
	154
	155	/* Setup input */
	156	in_fmt.endianness = 0;
	157	in_fmt.nchannels = 2;
	158	in_fmt.freq = s->rate->adc_hz;
	159	in_fmt.fmt = AUD_FMT_S16;
	160
	161	s->adc_voice[0] = AUD_open_in(&s->card, s->adc_voice[0],
	162	CODEC ".input1", s, wm8750_audio_in_cb, &in_fmt);
	163	s->adc_voice[1] = AUD_open_in(&s->card, s->adc_voice[1],
	164	CODEC ".input2", s, wm8750_audio_in_cb, &in_fmt);
	165	s->adc_voice[2] = AUD_open_in(&s->card, s->adc_voice[2],
	166	CODEC ".input3", s, wm8750_audio_in_cb, &in_fmt);
	167
	168	/* Setup output */
	169	out_fmt.endianness = 0;
	170	out_fmt.nchannels = 2;
	171	out_fmt.freq = s->rate->dac_hz;
	172	out_fmt.fmt = AUD_FMT_S16;
	173	monoout_fmt.endianness = 0;
	174	monoout_fmt.nchannels = 1;
	175	monoout_fmt.freq = s->rate->dac_hz;
	176	monoout_fmt.fmt = AUD_FMT_S16;
	177
	178	s->dac_voice[0] = AUD_open_out(&s->card, s->dac_voice[0],
	179	CODEC ".speaker", s, wm8750_audio_out_cb, &out_fmt);
	180	s->dac_voice[1] = AUD_open_out(&s->card, s->dac_voice[1],
	181	CODEC ".headphone", s, wm8750_audio_out_cb, &out_fmt);
	182	/* MONOMIX is also in stereo for simplicity */
	183	s->dac_voice[2] = AUD_open_out(&s->card, s->dac_voice[2],
	184	CODEC ".monomix", s, wm8750_audio_out_cb, &out_fmt);
	185	/* no sense emulating OUT3 which is a mix of other outputs */
	186
	187	/* We should connect the left and right channels to their
	188	* respective inputs/outputs but we have completely no need
	189	* for mixing or combining paths to different ports, so we
	190	* connect both channels to where the left channel is routed. */
	191	if (s->in[0] && *s->in[0])
192	AUD_set_active_in(*s->in[0], 1);
193	if (s->out[0] && *s->out[0])
194	AUD_set_active_out(*s->out[0], 1);
195	}
196
9596ebb7	197	static void inline wm8750_mask_update(struct wm8750_s *s)
adb86c37 AZ	198	{
	199	#define R_ONLY 0x0000ffff
	200	#define L_ONLY 0xffff0000
	201	#define BOTH (R_ONLY \| L_ONLY)
	202	#define NONE (R_ONLY & L_ONLY)
	203	s->inmask =
	204	(s->inmute[0] ? R_ONLY : BOTH) &
	205	(s->inmute[1] ? L_ONLY : BOTH) &
	206	(s->mute ? NONE : BOTH);
	207	s->outmask =
	208	(s->outmute[0] ? R_ONLY : BOTH) &
	209	(s->outmute[1] ? L_ONLY : BOTH) &
	210	(s->mute ? NONE : BOTH);
	211	}
	212
	213	void wm8750_reset(i2c_slave *i2c)
	214	{
	215	struct wm8750_s s = (struct wm8750_s ) i2c;
	216	s->enable = 0;
	217	wm8750_set_format(s);
	218	s->diff[0] = 0;
	219	s->diff[1] = 0;
	220	s->ds = 0;
	221	s->alc = 0;
	222	s->in[0] = &s->adc_voice[0];
	223	s->invol[0] = 0x17;
	224	s->invol[1] = 0x17;
	225	s->invol[2] = 0xc3;
	226	s->invol[3] = 0xc3;
	227	s->out[0] = &s->dac_voice[0];
	228	s->outvol[0] = 0xff;
	229	s->outvol[1] = 0xff;
	230	s->outvol[2] = 0x79;
	231	s->outvol[3] = 0x79;
	232	s->outvol[4] = 0x79;
	233	s->outvol[5] = 0x79;
	234	s->inmute[0] = 0;
	235	s->inmute[1] = 0;
	236	s->outmute[0] = 0;
	237	s->outmute[1] = 0;
	238	s->mute = 1;
	239	s->path[0] = 0;
	240	s->path[1] = 0;
	241	s->path[2] = 0;
	242	s->path[3] = 0;
	243	s->mpath[0] = 0;
	244	s->mpath[1] = 0;
	245	s->format = 0x0a;
	246	s->idx_in = sizeof(s->data_in);
	247	s->req_in = 0;
	248	s->idx_out = 0;
	249	s->req_out = 0;
	250	wm8750_mask_update(s);
	251	s->i2c_len = 0;
	252	}
	253
	254	static void wm8750_event(i2c_slave *i2c, enum i2c_event event)
	255	{
	256	struct wm8750_s s = (struct wm8750_s ) i2c;
	257
	258	switch (event) {
	259	case I2C_START_SEND:
	260	s->i2c_len = 0;
	261	break;
262	case I2C_FINISH:
263	#ifdef VERBOSE
264	if (s->i2c_len < 2)
265	printf("%s: message too short (%i bytes)\n",
266	__FUNCTION__, s->i2c_len);
267	#endif
268	break;
269	default:
270	break;
271	}
272	}
273
274	#define WM8750_LINVOL 0x00
275	#define WM8750_RINVOL 0x01
276	#define WM8750_LOUT1V 0x02
277	#define WM8750_ROUT1V 0x03
278	#define WM8750_ADCDAC 0x05
279	#define WM8750_IFACE 0x07
280	#define WM8750_SRATE 0x08
281	#define WM8750_LDAC 0x0a
282	#define WM8750_RDAC 0x0b
283	#define WM8750_BASS 0x0c
284	#define WM8750_TREBLE 0x0d
285	#define WM8750_RESET 0x0f
286	#define WM8750_3D 0x10
287	#define WM8750_ALC1 0x11
288	#define WM8750_ALC2 0x12
289	#define WM8750_ALC3 0x13
290	#define WM8750_NGATE 0x14
291	#define WM8750_LADC 0x15
292	#define WM8750_RADC 0x16
293	#define WM8750_ADCTL1 0x17
294	#define WM8750_ADCTL2 0x18
295	#define WM8750_PWR1 0x19
296	#define WM8750_PWR2 0x1a
297	#define WM8750_ADCTL3 0x1b
298	#define WM8750_ADCIN 0x1f
299	#define WM8750_LADCIN 0x20
300	#define WM8750_RADCIN 0x21
301	#define WM8750_LOUTM1 0x22
302	#define WM8750_LOUTM2 0x23
303	#define WM8750_ROUTM1 0x24
304	#define WM8750_ROUTM2 0x25
305	#define WM8750_MOUTM1 0x26
306	#define WM8750_MOUTM2 0x27
307	#define WM8750_LOUT2V 0x28
308	#define WM8750_ROUT2V 0x29
309	#define WM8750_MOUTV 0x2a
310
311	static int wm8750_tx(i2c_slave *i2c, uint8_t data)
312	{
313	struct wm8750_s s = (struct wm8750_s ) i2c;
314	uint8_t cmd;
315	uint16_t value;
316
317	if (s->i2c_len >= 2) {
318	printf("%s: long message (%i bytes)\n", __FUNCTION__, s->i2c_len);
319	#ifdef VERBOSE
320	return 1;
321	#endif
322	}
323	s->i2c_data[s->i2c_len ++] = data;
324	if (s->i2c_len != 2)
325	return 0;
326
327	cmd = s->i2c_data[0] >> 1;
328	value = ((s->i2c_data[0] << 8) \| s->i2c_data[1]) & 0x1ff;
329
330	switch (cmd) {
331	case WM8750_LADCIN: /* ADC Signal Path Control (Left) */
332	s->diff[0] = (((value >> 6) & 3) == 3); /* LINSEL */
333	if (s->diff[0])
334	s->in[0] = &s->adc_voice[0 + s->ds * 1];
335	else
336	s->in[0] = &s->adc_voice[((value >> 6) & 3) * 1 + 0];
337	break;
338
339	case WM8750_RADCIN: /* ADC Signal Path Control (Right) */
340	s->diff[1] = (((value >> 6) & 3) == 3); /* RINSEL */
341	if (s->diff[1])
342	s->in[1] = &s->adc_voice[0 + s->ds * 1];
343	else
344	s->in[1] = &s->adc_voice[((value >> 6) & 3) * 1 + 0];
345	break;
346
347	case WM8750_ADCIN: /* ADC Input Mode */
348	s->ds = (value >> 8) & 1; /* DS */
349	if (s->diff[0])
350	s->in[0] = &s->adc_voice[0 + s->ds * 1];
351	if (s->diff[1])
352	s->in[1] = &s->adc_voice[0 + s->ds * 1];
353	s->monomix[0] = (value >> 6) & 3; /* MONOMIX */
354	break;
355
356	case WM8750_ADCTL1: /* Additional Control (1) */
357	s->monomix[1] = (value >> 1) & 1; /* DMONOMIX */
358	break;
359
360	case WM8750_PWR1: /* Power Management (1) */
361	s->enable = ((value >> 6) & 7) == 3; /* VMIDSEL, VREF */
362	wm8750_set_format(s);
363	break;
364
365	case WM8750_LINVOL: /* Left Channel PGA */
366	s->invol[0] = value & 0x3f; /* LINVOL */
367	s->inmute[0] = (value >> 7) & 1; /* LINMUTE */
368	wm8750_mask_update(s);
369	break;
370
371	case WM8750_RINVOL: /* Right Channel PGA */
372	s->invol[1] = value & 0x3f; /* RINVOL */
373	s->inmute[1] = (value >> 7) & 1; /* RINMUTE */
374	wm8750_mask_update(s);
375	break;
376
377	case WM8750_ADCDAC: /* ADC and DAC Control */
378	s->pol = (value >> 5) & 3; /* ADCPOL */
379	s->mute = (value >> 3) & 1; /* DACMU */
380	wm8750_mask_update(s);
381	break;
382
383	case WM8750_ADCTL3: /* Additional Control (3) */
384	break;
385
386	case WM8750_LADC: /* Left ADC Digital Volume */
387	s->invol[2] = value & 0xff; /* LADCVOL */
388	break;
389
390	case WM8750_RADC: /* Right ADC Digital Volume */
391	s->invol[3] = value & 0xff; /* RADCVOL */
392	break;
393
394	case WM8750_ALC1: /* ALC Control (1) */
395	s->alc = (value >> 7) & 3; /* ALCSEL */
396	break;
397
398	case WM8750_NGATE: /* Noise Gate Control */
399	case WM8750_3D: /* 3D enhance */
400	break;
401
402	case WM8750_LDAC: /* Left Channel Digital Volume */
403	s->outvol[0] = value & 0xff; /* LDACVOL */
404	break;
405
406	case WM8750_RDAC: /* Right Channel Digital Volume */
407	s->outvol[1] = value & 0xff; /* RDACVOL */
408	break;
409
410	case WM8750_BASS: /* Bass Control */
411	break;
412
413	case WM8750_LOUTM1: /* Left Mixer Control (1) */
414	s->path[0] = (value >> 8) & 1; /* LD2LO */
415	break;
416
417	case WM8750_LOUTM2: /* Left Mixer Control (2) */
418	s->path[1] = (value >> 8) & 1; /* RD2LO */
419	break;
420
421	case WM8750_ROUTM1: /* Right Mixer Control (1) */
422	s->path[2] = (value >> 8) & 1; /* LD2RO */
423	break;
424
425	case WM8750_ROUTM2: /* Right Mixer Control (2) */
426	s->path[3] = (value >> 8) & 1; /* RD2RO */
427	break;
428
429	case WM8750_MOUTM1: /* Mono Mixer Control (1) */
430	s->mpath[0] = (value >> 8) & 1; /* LD2MO */
431	break;
432
433	case WM8750_MOUTM2: /* Mono Mixer Control (2) */
434	s->mpath[1] = (value >> 8) & 1; /* RD2MO */
435	break;
436
437	case WM8750_LOUT1V: /* LOUT1 Volume */
438	s->outvol[2] = value & 0x7f; /* LOUT2VOL */
439	break;
440
441	case WM8750_LOUT2V: /* LOUT2 Volume */
442	s->outvol[4] = value & 0x7f; /* LOUT2VOL */
443	break;
444
445	case WM8750_ROUT1V: /* ROUT1 Volume */
446	s->outvol[3] = value & 0x7f; /* ROUT2VOL */
447	break;
448
449	case WM8750_ROUT2V: /* ROUT2 Volume */
450	s->outvol[5] = value & 0x7f; /* ROUT2VOL */
451	break;
452
453	case WM8750_MOUTV: /* MONOOUT Volume */
454	s->outvol[6] = value & 0x7f; /* MONOOUTVOL */
455	break;
456
457	case WM8750_ADCTL2: /* Additional Control (2) */
458	break;
459
460	case WM8750_PWR2: /* Power Management (2) */
461	s->power = value & 0x7e;
462	break;
463
464	case WM8750_IFACE: /* Digital Audio Interface Format */
465	#ifdef VERBOSE
466	if (value & 0x40) /* MS */
467	printf("%s: attempt to enable Master Mode\n", __FUNCTION__);
468	#endif
469	s->format = value;
470	wm8750_set_format(s);
471	break;
472
473	case WM8750_SRATE: /* Clocking and Sample Rate Control */
474	s->rate = &wm_rate_table[(value >> 1) & 0x1f];
475	wm8750_set_format(s);
476	break;
477
478	case WM8750_RESET: /* Reset */
479	wm8750_reset(&s->i2c);
480	break;
481
482	#ifdef VERBOSE
483	default:
484	printf("%s: unknown register %02x\n", __FUNCTION__, cmd);
485	#endif
486	}
487
488	return 0;
489	}
490
491	static int wm8750_rx(i2c_slave *i2c)
492	{
493	return 0x00;
494	}
495
aa941b94 AZ	496	static void wm8750_save(QEMUFile f, void opaque)
	497	{
	498	struct wm8750_s s = (struct wm8750_s ) opaque;
	499	int i;
	500	qemu_put_8s(f, &s->i2c_data[0]);
	501	qemu_put_8s(f, &s->i2c_data[1]);
	502	qemu_put_be32(f, s->i2c_len);
	503	qemu_put_be32(f, s->enable);
	504	qemu_put_be32(f, s->idx_in);
	505	qemu_put_be32(f, s->req_in);
	506	qemu_put_be32(f, s->idx_out);
	507	qemu_put_be32(f, s->req_out);
	508
	509	for (i = 0; i < 7; i ++)
	510	qemu_put_8s(f, &s->outvol[i]);
	511	for (i = 0; i < 2; i ++)
	512	qemu_put_8s(f, &s->outmute[i]);
	513	for (i = 0; i < 4; i ++)
	514	qemu_put_8s(f, &s->invol[i]);
	515	for (i = 0; i < 2; i ++)
	516	qemu_put_8s(f, &s->inmute[i]);
	517
	518	for (i = 0; i < 2; i ++)
	519	qemu_put_8s(f, &s->diff[i]);
	520	qemu_put_8s(f, &s->pol);
	521	qemu_put_8s(f, &s->ds);
	522	for (i = 0; i < 2; i ++)
	523	qemu_put_8s(f, &s->monomix[i]);
	524	qemu_put_8s(f, &s->alc);
	525	qemu_put_8s(f, &s->mute);
	526	for (i = 0; i < 4; i ++)
	527	qemu_put_8s(f, &s->path[i]);
	528	for (i = 0; i < 2; i ++)
	529	qemu_put_8s(f, &s->mpath[i]);
	530	qemu_put_8s(f, &s->format);
	531	qemu_put_8s(f, &s->power);
	532	qemu_put_be32s(f, &s->inmask);
	533	qemu_put_be32s(f, &s->outmask);
	534	qemu_put_byte(f, (s->rate - wm_rate_table) / sizeof(*s->rate));
	535	i2c_slave_save(f, &s->i2c);
	536	}
	537
	538	static int wm8750_load(QEMUFile f, void opaque, int version_id)
	539	{
	540	struct wm8750_s s = (struct wm8750_s ) opaque;
	541	int i;
	542	qemu_get_8s(f, &s->i2c_data[0]);
	543	qemu_get_8s(f, &s->i2c_data[1]);
	544	s->i2c_len = qemu_get_be32(f);
	545	s->enable = qemu_get_be32(f);
	546	s->idx_in = qemu_get_be32(f);
	547	s->req_in = qemu_get_be32(f);
	548	s->idx_out = qemu_get_be32(f);
	549	s->req_out = qemu_get_be32(f);
	550
	551	for (i = 0; i < 7; i ++)
	552	qemu_get_8s(f, &s->outvol[i]);
	553	for (i = 0; i < 2; i ++)
	554	qemu_get_8s(f, &s->outmute[i]);
	555	for (i = 0; i < 4; i ++)
	556	qemu_get_8s(f, &s->invol[i]);
	557	for (i = 0; i < 2; i ++)
	558	qemu_get_8s(f, &s->inmute[i]);
	559
560	for (i = 0; i < 2; i ++)
561	qemu_get_8s(f, &s->diff[i]);
562	qemu_get_8s(f, &s->pol);
563	qemu_get_8s(f, &s->ds);
564	for (i = 0; i < 2; i ++)
565	qemu_get_8s(f, &s->monomix[i]);
566	qemu_get_8s(f, &s->alc);
567	qemu_get_8s(f, &s->mute);
568	for (i = 0; i < 4; i ++)
569	qemu_get_8s(f, &s->path[i]);
570	for (i = 0; i < 2; i ++)
571	qemu_get_8s(f, &s->mpath[i]);
572	qemu_get_8s(f, &s->format);
573	qemu_get_8s(f, &s->power);
574	qemu_get_be32s(f, &s->inmask);
575	qemu_get_be32s(f, &s->outmask);
576	s->rate = &wm_rate_table[(uint8_t) qemu_get_byte(f) & 0x1f];
577	i2c_slave_load(f, &s->i2c);
578	return 0;
579	}
580
581	static int wm8750_iid = 0;
582
adb86c37 AZ	583	i2c_slave wm8750_init(i2c_bus bus, AudioState *audio)
	584	{
	585	struct wm8750_s s = (struct wm8750_s )
	586	i2c_slave_init(bus, 0, sizeof(struct wm8750_s));
	587	s->i2c.event = wm8750_event;
	588	s->i2c.recv = wm8750_rx;
	589	s->i2c.send = wm8750_tx;
	590
	591	AUD_register_card(audio, CODEC, &s->card);
	592	wm8750_reset(&s->i2c);
	593
aa941b94 AZ	594	register_savevm(CODEC, wm8750_iid ++, 0, wm8750_save, wm8750_load, s);
aa941b94 AZ	595
adb86c37 AZ	596	return &s->i2c;
	597	}
	598
9596ebb7	599	static void wm8750_fini(i2c_slave *i2c)
adb86c37 AZ	600	{
	601	struct wm8750_s s = (struct wm8750_s ) i2c;
	602	wm8750_reset(&s->i2c);
	603	AUD_remove_card(&s->card);
	604	qemu_free(s);
	605	}
	606
	607	void wm8750_data_req_set(i2c_slave *i2c,
	608	void (data_req)(void , int, int), void *opaque)
	609	{
	610	struct wm8750_s s = (struct wm8750_s ) i2c;
	611	s->data_req = data_req;
	612	s->opaque = opaque;
	613	}
	614
	615	void wm8750_dac_dat(void *opaque, uint32_t sample)
	616	{
	617	struct wm8750_s s = (struct wm8750_s ) opaque;
	618	uint32_t data = (uint32_t ) &s->data_out[s->idx_out];
	619	*data = sample & s->outmask;
	620	s->req_out -= 4;
	621	s->idx_out += 4;
	622	if (s->idx_out >= sizeof(s->data_out) \|\| s->req_out <= 0)
	623	wm8750_out_flush(s);
	624	}
	625
	626	uint32_t wm8750_adc_dat(void *opaque)
	627	{
	628	struct wm8750_s s = (struct wm8750_s ) opaque;
	629	uint32_t *data;
	630	if (s->idx_in >= sizeof(s->data_in))
	631	wm8750_in_load(s);
	632	data = (uint32_t *) &s->data_in[s->idx_in];
	633	s->req_in -= 4;
	634	s->idx_in += 4;
	635	return *data & s->inmask;
	636	}