Relocate matrix_init_quantum content (#15953)

* Relocate matrix_init_quantum content

* Update include order

* Fix cherry pick from 15722

quantum/keyboard.c

@@ -20,6 +20,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include "keyboard.h"
 #include "matrix.h"
 #include "keymap.h"
+#include "magic.h"
 #include "host.h"
 #include "led.h"
 #include "keycode.h"
@@ -101,6 +102,12 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #ifdef SLEEP_LED_ENABLE
 #    include "sleep_led.h"
 #endif
+#ifdef SPLIT_KEYBOARD
+#    include "split_util.h"
+#endif
+#ifdef BLUETOOTH_ENABLE
+#    include "outputselect.h"
+#endif
 
 static uint32_t last_input_modification_time = 0;
 uint32_t        last_input_activity_time(void) { return last_input_modification_time; }
@@ -291,6 +298,36 @@ void housekeeping_task(void) {
     housekeeping_task_user();
 }
 
+/** \brief Init tasks previously located in matrix_init_quantum
+ *
+ * TODO: rationalise against keyboard_init and current split role
+ */
+void quantum_init(void) {
+    magic();
+    led_init_ports();
+#ifdef BACKLIGHT_ENABLE
+    backlight_init_ports();
+#endif
+#ifdef AUDIO_ENABLE
+    audio_init();
+#endif
+#ifdef LED_MATRIX_ENABLE
+    led_matrix_init();
+#endif
+#ifdef RGB_MATRIX_ENABLE
+    rgb_matrix_init();
+#endif
+#if defined(UNICODE_COMMON_ENABLE)
+    unicode_input_mode_init();
+#endif
+#ifdef HAPTIC_ENABLE
+    haptic_init();
+#endif
+#if defined(BLUETOOTH_ENABLE) && defined(OUTPUT_AUTO_ENABLE)
+    set_output(OUTPUT_AUTO);
+#endif
+}
+
 /** \brief keyboard_init
  *
  * FIXME: needs doc
@@ -300,8 +337,12 @@ void keyboard_init(void) {
     sync_timer_init();
 #ifdef VIA_ENABLE
     via_init();
+#endif
+#ifdef SPLIT_KEYBOARD
+    split_pre_init();
 #endif
     matrix_init();
+    quantum_init();
 #if defined(CRC_ENABLE)
     crc_init();
 #endif
@@ -342,6 +383,9 @@ void keyboard_init(void) {
 #ifdef VIRTSER_ENABLE
     virtser_init();
 #endif
+#ifdef SPLIT_KEYBOARD
+    split_post_init();
+#endif
 
 #if defined(DEBUG_MATRIX_SCAN_RATE) && defined(CONSOLE_ENABLE)
     debug_enable = true;

quantum/matrix.c

@@ -252,8 +252,6 @@ __attribute__((weak)) void matrix_read_rows_on_col(matrix_row_t current_matrix[]
 
 void matrix_init(void) {
 #ifdef SPLIT_KEYBOARD
-    split_pre_init();
-
     // Set pinout for right half if pinout for that half is defined
     if (!isLeftHand) {
 #    ifdef DIRECT_PINS_RIGHT
@@ -292,10 +290,6 @@ void matrix_init(void) {
     debounce_init(ROWS_PER_HAND);
 
     matrix_init_quantum();
-
-#ifdef SPLIT_KEYBOARD
-    split_post_init();
-#endif
 }
 
 #ifdef SPLIT_KEYBOARD

quantum/matrix_common.c

@@ -139,8 +139,6 @@ __attribute__((weak)) void matrix_slave_scan_user(void) {}
 
 __attribute__((weak)) void matrix_init(void) {
 #ifdef SPLIT_KEYBOARD
-    split_pre_init();
-
     thisHand = isLeftHand ? 0 : (ROWS_PER_HAND);
     thatHand = ROWS_PER_HAND - thisHand;
 #endif
@@ -156,10 +154,6 @@ __attribute__((weak)) void matrix_init(void) {
     debounce_init(ROWS_PER_HAND);
 
     matrix_init_quantum();
-
-#ifdef SPLIT_KEYBOARD
-    split_post_init();
-#endif
 }
 
 __attribute__((weak)) uint8_t matrix_scan(void) {

quantum/quantum.c

@@ -15,7 +15,6 @@
  */
 
 #include "quantum.h"
-#include "magic.h"
 
 #ifdef BLUETOOTH_ENABLE
 #    include "outputselect.h"
@@ -368,35 +367,8 @@ layer_state_t update_tri_layer_state(layer_state_t state, uint8_t layer1, uint8_
 
 void update_tri_layer(uint8_t layer1, uint8_t layer2, uint8_t layer3) { layer_state_set(update_tri_layer_state(layer_state, layer1, layer2, layer3)); }
 
-void matrix_init_quantum() {
-    magic();
-    led_init_ports();
-#ifdef BACKLIGHT_ENABLE
-    backlight_init_ports();
-#endif
-#ifdef AUDIO_ENABLE
-    audio_init();
-#endif
-#ifdef LED_MATRIX_ENABLE
-    led_matrix_init();
-#endif
-#ifdef RGB_MATRIX_ENABLE
-    rgb_matrix_init();
-#endif
-#if defined(UNICODE_COMMON_ENABLE)
-    unicode_input_mode_init();
-#endif
-#ifdef HAPTIC_ENABLE
-    haptic_init();
-#endif
-#if defined(BLUETOOTH_ENABLE) && defined(OUTPUT_AUTO_ENABLE)
-    set_output(OUTPUT_AUTO);
-#endif
-
-    matrix_init_kb();
-}
-
 // TODO: remove legacy api
+void matrix_init_quantum() { matrix_init_kb(); }
 void matrix_scan_quantum() { matrix_scan_kb(); }
 
 //------------------------------------------------------------------------------