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CS423x: Add remaining CS4235 extended->control register access paths

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This commit is contained in:
RichardG867
2025-02-09 00:03:25 -03:00
parent 83b3b322ac
commit bb51c324e2
1 changed files with 31 additions and 6 deletions
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37
src/sound/snd_ad1848.c
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@@ -167,6 +167,7 @@ ad1848_read(uint16_t addr, void *priv)
{
ad1848_t *ad1848 = (ad1848_t *) priv;
uint8_t ret = 0xff;
uint8_t temp = 0;
switch (addr & 3) {
case 0: /* Index */
@@ -207,10 +208,22 @@ ad1848_read(uint16_t addr, void *priv)
ret = ad1848->regs[18 + ad1848->xindex];
break;
case 26:
/* Backdoor to the Joystick Control register on CS4235+. */
case 23 ... 24:
case 29:
/* Backdoor to control indirect registers on CS4235+. */
if (ad1848->type >= AD1848_TYPE_CS4235) {
temp = ad1848->cram_read(3, ad1848->cram_priv);
ad1848->cram_write(3, (ad1848->xindex == 23) ? 2 : ((ad1848->xindex == 24) ? 8 : 9), ad1848->cram_priv);
ret = ad1848->cram_read(4, ad1848->cram_priv);
ad1848->cram_write(3, temp, ad1848->cram_priv);
}
break;
case 26 ... 28:
case 30:
/* Backdoor to control registers on CS4235+. */
if (ad1848->type >= AD1848_TYPE_CS4235)
ret = ad1848->cram_read(0, ad1848->cram_priv);
ret = ad1848->cram_read((ad1848->xindex == 30) ? 7 : (ad1848->xindex - 26), ad1848->cram_priv);
break;
default:
@@ -396,13 +409,25 @@ ad1848_write(uint16_t addr, uint8_t val, void *priv)
updatefreq = 1;
break;
case 23 ... 24:
case 29:
/* Backdoor to control indirect registers on CS4235+. */
if (ad1848->type >= AD1848_TYPE_CS4235) {
temp = ad1848->cram_read(3, ad1848->cram_priv);
ad1848->cram_write(3, (ad1848->xindex == 23) ? 2 : ((ad1848->xindex == 24) ? 8 : 9), ad1848->cram_priv);
ad1848->cram_write(4, val, ad1848->cram_priv);
ad1848->cram_write(3, temp, ad1848->cram_priv);
}
break;
case 25:
return;
case 26:
/* Backdoor to the Joystick Control register on CS4235+. */
case 26 ... 28:
case 30:
/* Backdoor to control registers on CS4235+. */
if (ad1848->type >= AD1848_TYPE_CS4235)
ad1848->cram_write(0, val, ad1848->cram_priv);
ad1848->cram_write((ad1848->xindex == 30) ? 7 : (ad1848->xindex - 26), val, ad1848->cram_priv);
break;
default: