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Add AC97 multi-codec support (unused) and fix gain calculation

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This commit is contained in:
RichardG867
2021-07-27 17:13:49 -03:00
parent 54b8fb57aa
commit 8485852b07
4 changed files with 48 additions and 37 deletions
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74
src/sound/snd_ac97_codec.c
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@@ -55,16 +55,14 @@ ac97_codec_log(const char *fmt, ...)
#endif
static const int32_t codec_attn[] = {
25, 32, 41, 51, 65, 82, 103, 130, 164, 206, 260, 327, 412, 519, 653, 822,
1036, 1304, 1641, 2067, 2602, 3276, 4125, 5192, 6537, 8230, 10362, 13044, 16422, 20674, 26027, 32767
};
static const int32_t codec_gain[] = {
8545, 8552, 8561, 8571, 8585, 8602, 8623, 8650, 8684, 8726, 8780, 8847, 8932, 9039, 9173, 9342,
9556, 9824, 10161, 10587, 11122, 11796, 12645, 13712, 15057, 16750, 18882, 21564, 24942, 29194, 34547, 41287
25, 32, 41, 51, 65, 82, 103, 130, 164, 206, 260, 327, 412, 519, 653, 822,
1036, 1304, 1641, 2067, 2602, 3276, 4125, 5192, 6537, 8230, 10362, 13044, 16422, 20674, 26027, 32767,
41305, 52068, 65636, 82739, 104299, 131477, 165737, 208925
};
ac97_codec_t **ac97_codec = NULL, **ac97_modem_codec = NULL;
int ac97_codec_count = 0, ac97_modem_codec_count = 0;
int ac97_codec_count = 0, ac97_modem_codec_count = 0,
ac97_codec_id = 0, ac97_modem_codec_id = 0;
uint8_t
@@ -72,7 +70,7 @@ ac97_codec_read(ac97_codec_t *dev, uint8_t reg)
{
uint8_t ret = dev->regs[reg & 0x7f];
ac97_codec_log("AC97 Codec: read(%02X) = %02X\n", reg, ret);
ac97_codec_log("AC97 Codec %d: read(%02X) = %02X\n", dev->codec_id, reg, ret);
return ret;
}
@@ -81,7 +79,7 @@ ac97_codec_read(ac97_codec_t *dev, uint8_t reg)
void
ac97_codec_write(ac97_codec_t *dev, uint8_t reg, uint8_t val)
{
ac97_codec_log("AC97 Codec: write(%02X, %02X)\n", reg, val);
ac97_codec_log("AC97 Codec %d: write(%02X, %02X)\n", dev->codec_id, reg, val);
reg &= 0x7f;
@@ -108,9 +106,16 @@ ac97_codec_write(ac97_codec_t *dev, uint8_t reg, uint8_t val)
case 0x03: /* Master Volume MSB */
case 0x05: /* Aux Out Volume MSB */
val &= 0xbf;
/* Convert 6-bit level 1xxxxx to 011111 per specification. */
if (val & 0x20) {
val &= ~0x20;
val |= 0x1f;
}
break;
case 0x07: /* Mono Volume MSB */
case 0x0b: /* PC Beep Volume MSB */
case 0x20: /* General Purpose LSB */
val &= 0x80;
break;
@@ -118,12 +123,17 @@ ac97_codec_write(ac97_codec_t *dev, uint8_t reg, uint8_t val)
case 0x02: /* Master Volume LSB */
case 0x04: /* Aux Out Volume LSB */
case 0x06: /* Mono Volume LSB */
case 0x0b: /* PC Beep Volume MSB */
val &= 0x3f;
/* Convert 6-bit level 1xxxxx to 011111 per specification. */
if (val & 0x20) {
val &= ~0x20;
val |= 0x1f;
}
break;
case 0x0a: /* PC Beep Volume LSB */
val &= 0xfe;
val &= 0x1e;
break;
case 0x0c: /* Phone Volume LSB */
@@ -173,7 +183,7 @@ ac97_codec_reset(void *priv)
{
ac97_codec_t *dev = (ac97_codec_t *) priv;
ac97_codec_log("AC97 Codec: reset()\n");
ac97_codec_log("AC97 Codec %d: reset()\n", dev->codec_id);
memset(dev->regs, 0, sizeof(dev->regs));
@@ -183,11 +193,12 @@ ac97_codec_reset(void *priv)
/* Flag codec as ready. */
dev->regs[0x26] = 0x0f;
/* Set Vendor ID. */
dev->regs[0x7c] = dev->id >> 16;
dev->regs[0x7d] = dev->id >> 24;
dev->regs[0x7e] = dev->id;
dev->regs[0x7f] = dev->id >> 8;
/* Set Codec and Vendor IDs. */
dev->regs[0x29] = (dev->codec_id << 6) | 0x02;
dev->regs[0x7c] = dev->vendor_id >> 16;
dev->regs[0x7d] = dev->vendor_id >> 24;
dev->regs[0x7e] = dev->vendor_id;
dev->regs[0x7f] = dev->vendor_id >> 8;
}
@@ -204,18 +215,14 @@ ac97_codec_getattn(void *priv, uint8_t reg, int *l, int *r)
return;
}
if (reg < 0x10) { /* 6-bit volume */
if (l_val & 0x20)
*l = codec_attn[0];
else
*l = codec_attn[0x1f - (l_val & 0x1f)];
if (r_val & 0x20)
*r = codec_attn[0];
else
*r = codec_attn[0x1f - (r_val & 0x1f)];
l_val &= 0x1f;
r_val &= 0x1f;
if (reg < 0x10) { /* 5-bit level (converted from 6-bit on register write) */
*l = codec_attn[0x1f - l_val];
*r = codec_attn[0x1f - r_val];
} else { /* 5-bit gain */
*l = codec_gain[0x1f - (l_val & 0x1f)];
*r = codec_gain[0x1f - (r_val & 0x1f)];
*l = codec_attn[0x27 - l_val];
*r = codec_attn[0x27 - r_val];
}
}
@@ -226,19 +233,20 @@ ac97_codec_init(const device_t *info)
ac97_codec_t *dev = malloc(sizeof(ac97_codec_t));
memset(dev, 0, sizeof(ac97_codec_t));
dev->id = info->local;
ac97_codec_log("AC97 Codec: init(%c%c%c%02X)\n", (dev->id >> 24) & 0xff, (dev->id >> 16) & 0xff, (dev->id >> 8) & 0xff, dev->id & 0xff);
dev->vendor_id = info->local;
ac97_codec_log("AC97 Codec %d: init(%c%c%c%02X)\n", ac97_codec_id, (dev->vendor_id >> 24) & 0xff, (dev->vendor_id >> 16) & 0xff, (dev->vendor_id >> 8) & 0xff, dev->vendor_id & 0xff);
/* Associate this codec to the current controller. */
if (!ac97_codec || (ac97_codec_count <= 0)) {
fatal("AC97 Codec: No controller to associate codec");
return NULL;
fatal("AC97 Codec %d: No controller to associate codec\n", ac97_codec_id);
return NULL;
}
*ac97_codec = dev;
if (--ac97_codec_count == 0)
ac97_codec = NULL;
else
ac97_codec += sizeof(ac97_codec_t *);
dev->codec_id = ac97_codec_id++;
return dev;
}
@@ -249,7 +257,7 @@ ac97_codec_close(void *priv)
{
ac97_codec_t *dev = (ac97_codec_t *) priv;
ac97_codec_log("AC97 Codec: close()\n");
ac97_codec_log("AC97 Codec %d: close()\n", dev->codec_id);
free(dev);
}