[Keyboard] Add audio support to Adafruit MacroPad RP2040 (#20353)

keyboards/adafruit/macropad/macropad.c

@@ -41,6 +41,31 @@ led_config_t g_led_config = { {
 
 #endif
 
+#ifdef AUDIO_ENABLE
+void keyboard_pre_init_kb(void) {
+    // ensure pin is set and enabled pre-audio init
+    setPinOutput(SPEAKER_SHUTDOWN);
+    writePinHigh(SPEAKER_SHUTDOWN);
+    keyboard_pre_init_user();
+}
+
+void keyboard_post_init_kb(void) {
+    // set pin based on active status
+    writePin(SPEAKER_SHUTDOWN, audio_is_on());
+    keyboard_post_init_user();
+}
+
+void audio_on_user(void) {
+    writePinHigh(SPEAKER_SHUTDOWN);
+}
+
+void audio_off_user(void) {
+    // needs a delay or it runs right after play note.
+    wait_ms(200);
+    writePinLow(SPEAKER_SHUTDOWN);
+}
+#endif
+
 #ifdef ENCODER_ENABLE
 bool encoder_update_kb(uint8_t index, bool clockwise) {
     if (!encoder_update_user(index, clockwise)) { return false; }