refactor(settings): Only load used subtrees

app/CMakeLists.txt

@@ -65,7 +65,6 @@ target_sources_ifdef(CONFIG_ZMK_BLE app PRIVATE src/hog.c)
 target_sources_ifdef(CONFIG_ZMK_RGB_UNDERGLOW app PRIVATE src/rgb_underglow.c)
 target_sources(app PRIVATE src/endpoints.c)
 target_sources(app PRIVATE src/hid_listener.c)
-target_sources_ifdef(CONFIG_SETTINGS app PRIVATE src/settings.c)
 target_sources(app PRIVATE src/main.c)
 
 add_subdirectory(src/display/)

app/src/ble.c

@@ -526,7 +526,8 @@ static int zmk_ble_init(const struct device *_arg) {
         return err;
     }
 
-    settings_load();
+    settings_load_subtree("ble");
+    settings_load_subtree("bt");
 
 #endif
 

app/src/endpoints.c

@@ -166,7 +166,7 @@ static int zmk_endpoints_init(const struct device *_arg) {
         return err;
     }
 
-    settings_load();
+    settings_load_subtree("endpoints");
 #endif
 
     return 0;

app/src/ext_power_generic.c

@@ -140,6 +140,8 @@ static int ext_power_generic_init(const struct device *dev) {
     }
 
 #if IS_ENABLED(CONFIG_SETTINGS)
+    settings_subsys_init();
+
     settings_register(&ext_power_conf);
     k_delayed_work_init(&ext_power_save_work, ext_power_save_state_work);
 

app/src/rgb_underglow.c

@@ -265,6 +265,8 @@ static int zmk_rgb_underglow_init(const struct device *_arg) {
     };
 
 #if IS_ENABLED(CONFIG_SETTINGS)
+    settings_subsys_init();
+
     settings_register(&rgb_conf);
     k_delayed_work_init(&underglow_save_work, zmk_rgb_underglow_save_state_work);
 

app/src/settings.c

@@ -1,8 +0,0 @@
-#include <device.h>
-#include <init.h>
-#include <kernel.h>
-#include <settings/settings.h>
-
-static int zmk_settings_init(const struct device *_arg) { return settings_load(); }
-
-SYS_INIT(zmk_settings_init, APPLICATION, CONFIG_APPLICATION_INIT_PRIORITY);