From 0c160e1fbafbf477c74e64fd8ab9a9121eb0f42a Mon Sep 17 00:00:00 2001
From: Ryan <fauxpark@gmail.com>
Date: Mon, 23 Oct 2023 14:43:46 +1000
Subject: Separate 6KRO and NKRO report structs (#22267)

---
 quantum/action_util.c | 57 ++++++++++++++++++++++++++++++++++++++++-----------
 1 file changed, 45 insertions(+), 12 deletions(-)

(limited to 'quantum/action_util.c')

diff --git a/quantum/action_util.c b/quantum/action_util.c
index 909dea0595..52171b5050 100644
--- a/quantum/action_util.c
+++ b/quantum/action_util.c
@@ -35,6 +35,9 @@ static uint8_t suppressed_mods    = 0;
 // TODO: pointer variable is not needed
 // report_keyboard_t keyboard_report = {};
 report_keyboard_t *keyboard_report = &(report_keyboard_t){};
+#ifdef NKRO_ENABLE
+report_nkro_t *nkro_report = &(report_nkro_t){};
+#endif
 
 extern inline void add_key(uint8_t key);
 extern inline void del_key(uint8_t key);
@@ -252,13 +255,8 @@ bool is_oneshot_enabled(void) {
 
 #endif
 
-/** \brief Send keyboard report
- *
- * FIXME: needs doc
- */
-void send_keyboard_report(void) {
-    keyboard_report->mods = real_mods;
-    keyboard_report->mods |= weak_mods;
+static uint8_t get_mods_for_report(void) {
+    uint8_t mods = real_mods | weak_mods;
 
 #ifndef NO_ACTION_ONESHOT
     if (oneshot_mods) {
@@ -268,20 +266,25 @@ void send_keyboard_report(void) {
             clear_oneshot_mods();
         }
 #    endif
-        keyboard_report->mods |= oneshot_mods;
-        if (has_anykey(keyboard_report)) {
+        mods |= oneshot_mods;
+        if (has_anykey()) {
             clear_oneshot_mods();
         }
     }
-
 #endif
 
 #ifdef KEY_OVERRIDE_ENABLE
     // These need to be last to be able to properly control key overrides
-    keyboard_report->mods &= ~suppressed_mods;
-    keyboard_report->mods |= weak_override_mods;
+    mods &= ~suppressed_mods;
+    mods |= weak_override_mods;
 #endif
 
+    return mods;
+}
+
+void send_6kro_report(void) {
+    keyboard_report->mods = get_mods_for_report();
+
 #ifdef PROTOCOL_VUSB
     host_keyboard_send(keyboard_report);
 #else
@@ -295,6 +298,36 @@ void send_keyboard_report(void) {
 #endif
 }
 
+#ifdef NKRO_ENABLE
+void send_nkro_report(void) {
+    nkro_report->mods = get_mods_for_report();
+
+    static report_nkro_t last_report;
+
+    /* Only send the report if there are changes to propagate to the host. */
+    if (memcmp(nkro_report, &last_report, sizeof(report_nkro_t)) != 0) {
+        memcpy(&last_report, nkro_report, sizeof(report_nkro_t));
+        host_nkro_send(nkro_report);
+    }
+}
+#endif
+
+/** \brief Send keyboard report
+ *
+ * FIXME: needs doc
+ */
+void send_keyboard_report(void) {
+#ifdef NKRO_ENABLE
+    if (keyboard_protocol && keymap_config.nkro) {
+        send_nkro_report();
+    } else {
+        send_6kro_report();
+    }
+#else
+    send_6kro_report();
+#endif
+}
+
 /** \brief Get mods
  *
  * FIXME: needs doc
-- 
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