Split MIDI functionality into MIDI_BASIC and MIDI_ADVANCED

MIDI_ENABLE = no

   text	   data	    bss	    dec	    hex	filename
      0	  17080	      0	  17080	   42b8	satan_midi.hex

MIDI_ENABLE = yes
MIDI_BASIC undefined
MIDI_ADVANCED undefined

   text	   data	    bss	    dec	    hex	filename
      0	  19494	      0	  19494	   4c26	satan_midi.hex

MIDI_ENABLE = yes
#define MIDI_BASIC
MIDI_ADVANCED undefined

   text	   data	    bss	    dec	    hex	filename
      0	  19788	      0	  19788	   4d4c	satan_midi.hex

MIDI_ENABLE = yes
MIDI_BASIC undefined
#define MIDI_ADVANCED

   text	   data	    bss	    dec	    hex	filename
      0	  20846	      0	  20846	   516e	satan_midi.hex

MIDI_ENABLE = yes
#define MIDI_BASIC
#define MIDI_ADVANCED

   text	   data	    bss	    dec	    hex	filename
      0	  21140	      0	  21140	   5294	satan_midi.hex

1 files changed, 10 insertions, 3 deletions

diff --git a/quantum/quantum_keycodes.h b/quantum/quantum_keycodes.h
index 6d1438051..3b82b7208 100644
--- a/quantum/quantum_keycodes.h
+++ b/quantum/quantum_keycodes.h
@@ -2,7 +2,7 @@
 #ifndef QUANTUM_KEYCODES_H
 #define QUANTUM_KEYCODES_H
 
-#ifdef MIDI_ENABLE
+#if defined(MIDI_ENABLE) && defined(MIDI_ADVANCED)
 #ifndef MIDI_TONE_KEYCODE_OCTAVES
 #define MIDI_TONE_KEYCODE_OCTAVES 3
 #endif
@@ -116,6 +116,12 @@ enum quantum_keycodes {
 #ifdef MIDI_ENABLE
     // Midi
 
+#ifdef MIDI_BASIC
+    MI_ON,  // send midi notes when music mode is enabled
+    MI_OFF, // don't send midi notes when music mode is enabled
+#endif
+
+#ifdef MIDI_ADVANCED
     MIDI_TONE_MIN,
 
 #if MIDI_TONE_KEYCODE_OCTAVES > 0
@@ -321,7 +327,7 @@ enum quantum_keycodes {
     MI_CHD, // previous channel
     MI_CHU, // next channel
 
-    MI_OFF, // all notes off
+    MI_ALLOFF, // all notes off
 
     MI_SUS, // sustain
     MI_PORT, // portamento
@@ -332,7 +338,8 @@ enum quantum_keycodes {
     MI_MOD, // modulation
     MI_MODSD, // decrease modulation speed
     MI_MODSU, // increase modulation speed
-#endif
+#endif // MIDI_ADVANCED
+#endif // MIDI_ENABLE
 
     // Backlight functionality
     BL_0,