Joystick feature updates (#16732)

* Joystick feature updates

* Move new functions to joystick.h

* Docs

1 files changed, 31 insertions, 6 deletions

diff --git a/quantum/joystick.c b/quantum/joystick.c
index 7b87201aef..86b2c64036 100644
--- a/quantum/joystick.c
+++ b/quantum/joystick.c
@@ -1,13 +1,38 @@
 #include "joystick.h"
 
-joystick_t joystick_status = {.buttons = {0},
-                              .axes =
-                                  {
+// clang-format off
+joystick_t joystick_status = {
+    .buttons = {0},
+    .axes = {
 #if JOYSTICK_AXES_COUNT > 0
-                                      0
+        0
 #endif
-                                  },
-                              .status = 0};
+    },
+    .status = 0
+};
+// clang-format on
 
 // array defining the reading of analog values for each axis
 __attribute__((weak)) joystick_config_t joystick_axes[JOYSTICK_AXES_COUNT] = {};
+
+// to be implemented in the hid protocol library
+void send_joystick_packet(joystick_t *joystick);
+
+void joystick_flush(void) {
+    if ((joystick_status.status & JS_UPDATED) > 0) {
+        send_joystick_packet(&joystick_status);
+        joystick_status.status &= ~JS_UPDATED;
+    }
+}
+
+void register_joystick_button(uint8_t button) {
+    joystick_status.buttons[button / 8] |= 1 << (button % 8);
+    joystick_status.status |= JS_UPDATED;
+    joystick_flush();
+}
+
+void unregister_joystick_button(uint8_t button) {
+    joystick_status.buttons[button / 8] &= ~(1 << (button % 8));
+    joystick_status.status |= JS_UPDATED;
+    joystick_flush();
+}