ac97: Disable pi/mc reads

xemu-project · Jan 15, 2025 · 92adeca · 92adeca
1 parent 0eddb3e
commit 92adeca
Showing 1 changed file with 22 additions and 0 deletions.
diff --git a/hw/audio/ac97.c b/hw/audio/ac97.c
@@ -218,15 +218,19 @@ static void voice_set_active(AC97LinkState *s, int bm_index, int on)
 {
     switch (bm_index) {
     case PI_INDEX:
+#ifndef XBOX
         AUD_set_active_in(s->voice_pi, on);
+#endif
         break;
 
     case PO_INDEX:
         AUD_set_active_out(s->voice_po, on);
         break;
 
     case MC_INDEX:
+#ifndef XBOX
         AUD_set_active_in(s->voice_mc, on);
+#endif
         break;
 
     case SO_INDEX:
@@ -294,6 +298,7 @@ static void open_voice(AC97LinkState *s, int index, int freq)
         s->invalid_freq[index] = 0;
         switch (index) {
         case PI_INDEX:
+#ifndef XBOX
             s->voice_pi = AUD_open_in(
                 &s->card,
                 s->voice_pi,
@@ -302,6 +307,7 @@ static void open_voice(AC97LinkState *s, int index, int freq)
                 pi_callback,
                 &as
                 );
+#endif
             break;
 
         case PO_INDEX:
@@ -316,6 +322,7 @@ static void open_voice(AC97LinkState *s, int index, int freq)
             break;
 
         case MC_INDEX:
+#ifndef XBOX
             s->voice_mc = AUD_open_in(
                 &s->card,
                 s->voice_mc,
@@ -324,6 +331,7 @@ static void open_voice(AC97LinkState *s, int index, int freq)
                 mc_callback,
                 &as
                 );
+#endif
             break;
 
         case SO_INDEX:
@@ -333,7 +341,9 @@ static void open_voice(AC97LinkState *s, int index, int freq)
         s->invalid_freq[index] = freq;
         switch (index) {
         case PI_INDEX:
+#ifndef XBOX
             AUD_close_in(&s->card, s->voice_pi);
+#endif
             s->voice_pi = NULL;
             break;
 
@@ -343,7 +353,9 @@ static void open_voice(AC97LinkState *s, int index, int freq)
             break;
 
         case MC_INDEX:
+#ifndef XBOX
             AUD_close_in(&s->card, s->voice_mc);
+#endif
             s->voice_mc = NULL;
             break;
 
@@ -357,17 +369,21 @@ static void reset_voices(AC97LinkState *s, uint8_t active[LAST_INDEX])
 {
     uint16_t freq;
 
+#ifndef XBOX
     freq = mixer_load(s, AC97_PCM_LR_ADC_Rate);
     open_voice(s, PI_INDEX, freq);
     AUD_set_active_in(s->voice_pi, active[PI_INDEX]);
+#endif
 
     freq = mixer_load(s, AC97_PCM_Front_DAC_Rate);
     open_voice(s, PO_INDEX, freq);
     AUD_set_active_out(s->voice_po, active[PO_INDEX]);
 
+#ifndef XBOX
     freq = mixer_load(s, AC97_MIC_ADC_Rate);
     open_voice(s, MC_INDEX, freq);
     AUD_set_active_in(s->voice_mc, active[MC_INDEX]);
+#endif
 }
 
 static void get_volume(uint16_t vol, uint16_t mask, int inverse,
@@ -408,7 +424,9 @@ static void update_volume_in(AC97LinkState *s)
     get_volume(mixer_load(s, AC97_Record_Gain_Mute), 0x0f, 0,
                &mute, &lvol, &rvol);
 
+#ifndef XBOX
     AUD_set_volume_in(s->voice_pi, mute, lvol, rvol);
+#endif
 }
 
 static void set_volume(AC97LinkState *s, int index, uint32_t val)
@@ -972,6 +990,10 @@ static int read_audio(AC97LinkState *s, AC97BusMasterRegs *r,
     int to_copy = 0;
     SWVoiceIn *voice = (r - s->bm_regs) == MC_INDEX ? s->voice_mc : s->voice_pi;
 
+#ifdef XBOX
+    return 0;
+#endif
+
     temp = MIN(temp, max);
 
     if (!temp) {