int keymap_get_layer(void);
int keymap_set_layer(int layer);
-bool keymap_is_special_mode(int fn_bits);
+bool keymap_is_special_mode(uint8_t fn_bits);
/* process Fn keys. This.should be called every scan. */
-void keymap_fn_proc(int fn_bits);
+void keymap_fn_proc(uint8_t fn_bits);
#endif