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qemu-e2k/hw/wm8750.c
balrog eb69b50ad9 Prevent use of an uninitialised value in WM8750 and move buffer flush 
to a better place (Jan Kiszka).


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4223 c046a42c-6fe2-441c-8c8c-71466251a162
2008-04-20 03:40:20 +00:00

638 lines
18 KiB
C
Raw Blame History

/*
* WM8750 audio CODEC.
*
* Copyright (c) 2006 Openedhand Ltd.
* Written by Andrzej Zaborowski <balrog@zabor.org>
*
* 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;
s->req_out = free_b;
s->data_req(s->opaque, free_b >> 2, s->req_in >> 2);
wm8750_out_flush(s);
}
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->rate = &wm_rate_table[0];
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;
}
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