Archipelago » qemu

VL_OBJS+= pxa2xx_lcd.o pxa2xx_mmci.o pxa2xx_pcmcia.o max111x.o max7310.o

VL_OBJS+= spitz.o ads7846.o ide.o serial.o nand.o $(AUDIODRV) wm8750.o

/* max7310.c */

i2c_slave *max7310_init(i2c_bus *bus);

void max7310_reset(i2c_slave *i2c);

qemu_irq *max7310_gpio_in_get(i2c_slave *i2c);

void max7310_gpio_out_set(i2c_slave *i2c, int line, qemu_irq handler);

/* wm8750.c */

i2c_slave *wm8750_init(i2c_bus *bus, AudioState *audio);

void wm8750_reset(i2c_slave *i2c);

void wm8750_data_req_set(i2c_slave *i2c,

                void (*data_req)(void *, int, int), void *opaque);

void wm8750_dac_dat(void *opaque, uint32_t sample);

uint32_t wm8750_adc_dat(void *opaque);

/*

 * MAX7310 8-port GPIO expansion chip.

 *

 * Copyright (c) 2006 Openedhand Ltd.

 * Written by Andrzej Zaborowski <balrog@zabor.org>

 *

 * This file is licensed under GNU GPL.

 */

#include "vl.h"

struct max7310_s {

    i2c_slave i2c;

    int i2c_command_byte;

    int len;

    uint8_t level;

    uint8_t direction;

    uint8_t polarity;

    uint8_t status;

    uint8_t command;

    qemu_irq handler[8];

    qemu_irq *gpio_in;

};

void max7310_reset(i2c_slave *i2c)

{

    struct max7310_s *s = (struct max7310_s *) i2c;

    s->level &= s->direction;

    s->direction = 0xff;

    s->polarity = 0xf0;

    s->status = 0x01;

    s->command = 0x00;

}

static int max7310_rx(i2c_slave *i2c)

{

    struct max7310_s *s = (struct max7310_s *) i2c;

    switch (s->command) {

    case 0x00:	/* Input port */

        return s->level ^ s->polarity;

        break;

    case 0x01:	/* Output port */

        return s->level & ~s->direction;

        break;

    case 0x02:	/* Polarity inversion */

        return s->polarity;

    case 0x03:	/* Configuration */

        return s->direction;

    case 0x04:	/* Timeout */

        return s->status;

        break;

    case 0xff:	/* Reserved */

        return 0xff;

    default:

#ifdef VERBOSE

        printf("%s: unknown register %02x\n", __FUNCTION__, s->command);

#endif

        break;

    }

    return 0xff;

}

static int max7310_tx(i2c_slave *i2c, uint8_t data)

{

    struct max7310_s *s = (struct max7310_s *) i2c;

    uint8_t diff;

    int line;

    if (s->len ++ > 1) {

#ifdef VERBOSE

        printf("%s: message too long (%i bytes)\n", __FUNCTION__, s->len);

#endif

        return 1;

    }

    if (s->i2c_command_byte) {

        s->command = data;

        s->i2c_command_byte = 0;

        return 0;

    }

    switch (s->command) {

    case 0x01:	/* Output port */

        for (diff = (data ^ s->level) & ~s->direction; diff;

                        diff &= ~(1 << line)) {

            line = ffs(diff) - 1;

            if (s->handler[line])

                qemu_set_irq(s->handler[line], (data >> line) & 1);

        }

        s->level = (s->level & s->direction) | (data & ~s->direction);

        break;

    case 0x02:	/* Polarity inversion */

        s->polarity = data;

        break;

    case 0x03:	/* Configuration */

        s->level &= ~(s->direction ^ data);

        s->direction = data;

        break;

    case 0x04:	/* Timeout */

        s->status = data;

        break;

    case 0x00:	/* Input port - ignore writes */

	break;

    default:

#ifdef VERBOSE

        printf("%s: unknown register %02x\n", __FUNCTION__, s->command);

#endif

        return 1;

    }

    return 0;

}

static void max7310_event(i2c_slave *i2c, enum i2c_event event)

{

    struct max7310_s *s = (struct max7310_s *) i2c;

    s->len = 0;

    switch (event) {

    case I2C_START_SEND:

        s->i2c_command_byte = 1;

        break;

    case I2C_FINISH:

        if (s->len == 1)

#ifdef VERBOSE

            printf("%s: message too short (%i bytes)\n", __FUNCTION__, s->len);

#endif

        break;

    default:

        break;

    }

}

static void max7310_gpio_set(void *opaque, int line, int level)

{

    struct max7310_s *s = (struct max7310_s *) opaque;

    if (line >= sizeof(s->handler) / sizeof(*s->handler) || line  < 0)

        cpu_abort(cpu_single_env, "bad GPIO line");

    if (level)

        s->level |= s->direction & (1 << line);

    else

        s->level &= ~(s->direction & (1 << line));

}

/* MAX7310 is SMBus-compatible (can be used with only SMBus protocols),

 * but also accepts sequences that are not SMBus so return an I2C device.  */

struct i2c_slave *max7310_init(i2c_bus *bus)

{

    struct max7310_s *s = (struct max7310_s *)

            i2c_slave_init(bus, 0, sizeof(struct max7310_s));

    s->i2c.event = max7310_event;

    s->i2c.recv = max7310_rx;

    s->i2c.send = max7310_tx;

    s->gpio_in = qemu_allocate_irqs(max7310_gpio_set, s,

                    sizeof(s->handler) / sizeof(*s->handler));

    max7310_reset(&s->i2c);

    return &s->i2c;

}

qemu_irq *max7310_gpio_in_get(i2c_slave *i2c)

{

    struct max7310_s *s = (struct max7310_s *) i2c;

    return s->gpio_in;

}

void max7310_gpio_out_set(i2c_slave *i2c, int line, qemu_irq handler)

{

    struct max7310_s *s = (struct max7310_s *) i2c;

    if (line >= sizeof(s->handler) / sizeof(*s->handler) || line  < 0)

        cpu_abort(cpu_single_env, "bad GPIO line");

    s->handler[line] = handler;

}

/* Wm8750 and Max7310 on I2C */

#define AKITA_MAX_ADDR	0x18

#define SPITZ_WM_ADDRL	0x1a

#define SPITZ_WM_ADDRH	0x1b

#define SPITZ_GPIO_WM	5

#ifdef HAS_AUDIO

static void spitz_wm8750_addr(int line, int level, void *opaque)

{

    i2c_slave *wm = (i2c_slave *) opaque;

    if (level)

        i2c_set_slave_address(wm, SPITZ_WM_ADDRH);

    else

        i2c_set_slave_address(wm, SPITZ_WM_ADDRL);

}

#endif

static void spitz_i2c_setup(struct pxa2xx_state_s *cpu)

{

    /* Attach the CPU on one end of our I2C bus.  */

    i2c_bus *bus = pxa2xx_i2c_bus(cpu->i2c[0]);

#ifdef HAS_AUDIO

    AudioState *audio;

    i2c_slave *wm;

    audio = AUD_init();

    if (!audio)

        return;

    /* Attach a WM8750 to the bus */

    wm = wm8750_init(bus, audio);

    spitz_wm8750_addr(0, 0, wm);

    pxa2xx_gpio_handler_set(cpu->gpio, SPITZ_GPIO_WM, spitz_wm8750_addr, wm);

    /* .. and to the sound interface.  */

    cpu->i2s->opaque = wm;

    cpu->i2s->codec_out = wm8750_dac_dat;

    cpu->i2s->codec_in = wm8750_adc_dat;

    wm8750_data_req_set(wm, cpu->i2s->data_req, cpu->i2s);

#endif

}

static void spitz_akita_i2c_setup(struct pxa2xx_state_s *cpu)

{

    /* Attach a Max7310 to Akita I2C bus.  */

    i2c_set_slave_address(max7310_init(pxa2xx_i2c_bus(cpu->i2c[0])),

                    AKITA_MAX_ADDR);

}

    spitz_i2c_setup(cpu);

    if (model == akita)

        spitz_akita_i2c_setup(cpu);

/*

 * WM8750 audio CODEC.

 *

 * Copyright (c) 2006 Openedhand Ltd.

 * Written by Andrzej Zaborowski <balrog@zabor.org>

 *

 * 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;

}

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);

    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;

}