Added multi-callback for system-settings keys

[platform/core/api/system-settings.git] / include / system_settings_private.h

diff --git a/include/system_settings_private.h b/include/system_settings_private.h
index 463c421..eb4ca68 100644 (file)
--- a/include/system_settings_private.h
+++ b/include/system_settings_private.h
@@ -24,6 +24,8 @@ extern "C"
 #endif
 
 #include <dlog.h>
+#include <system_settings.h>
+#include <system_settings_multi_callback.h>
 
 #ifdef LOG_TAG
 #undef LOG_TAG
@@ -39,20 +41,20 @@ extern "C"
 #define SETTING_TRACE_DEBUG(fmt, arg...) \
        do {\
                SECURE_LOGD("\033[0;32mDEBUG: " fmt "\033[0m\n", ##arg);\
-       }while(0);
+       } while (0);
 
 #define SETTING_TRACE(fmt, arg...) \
        do {\
                SECURE_LOGI("\033[0;36m" fmt "\033[0m\n", ##arg);\
-       }while(0);
+       } while (0);
 
 #define SETTING_TRACE_BEGIN do {\
                SECURE_LOGD("\033[0;35mENTER FUNCTION: %s. \033[0m\n", __FUNCTION__);\
-       }while(0);
+       } while (0);
 
 #define SETTING_TRACE_END  do {\
                SECURE_LOGD("\033[0;35mEXIT FUNCTION: %s. \033[0m\n", __FUNCTION__);\
-       }while(0);
+       } while (0);
 #else
 #define SETTING_TRACE_DEBUG(fmt, arg...)
 #define SETTING_TRACE(fmt, arg...)
@@ -61,6 +63,13 @@ extern "C"
 #endif
 
 
+#define SETTING_PROFILE_PATH "tizen.org/feature/profile"
+#define SETTING_INCOMING_CALL_PATH "tizen.org/feature/systemsetting.incoming_call"
+#define SETTING_HOME_SCREEN_PATH "tizen.org/feature/systemsetting.home_screen"
+#define SETTING_LOCK_SCREEN_PATH "tizen.org/feature/systemsetting.lock_screen"
+#define SETTING_NOTIFICATION_EMAIL_PATH "tizen.org/feature/systemsetting.notification_email"
+#define SETTING_WIFI_PATH "tizen.org/feature/network.wifi"
+#define SETTING_TELEPHONY_PATH "tizen.org/feature/network.telephony"
 
 /**
  * @internal
@@ -78,48 +87,66 @@ typedef enum {
 }
 system_setting_data_type_e;
 
+/**
+ * @internal
+ * @since_tizen 4.0
+ * Enumeration for supported profile info
+ */
+typedef enum {
+       SYSTEM_SETTING_SUPPORTED_PROFILE_MOBILE = 0x1,          /**< mobile */
+       SYSTEM_SETTING_SUPPORTED_PROFILE_WEARABLE = 0x2,        /**< wearable */
+       SYSTEM_SETTING_SUPPORTED_PROFILE_TV = 0x4,                      /**< tv */
+       SYSTEM_SETTING_SUPPORTED_PROFILE_COMMON = 0x8,          /**< common*/
+       SYSTEM_SETTING_SUPPORTED_PROFILE_ALL = 0xF,                     /**< all of profiles */
+}
+system_setting_supported_profile_info_e;
 
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_INVALID_PARAMETER Invalid parameter
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_INVALID_PARAMETER Invalid parameter
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-typedef int (*system_setting_get_value_cb)(system_settings_key_e key, system_setting_data_type_e data_type, void **value);
+typedef int (*system_setting_get_value_cb)(system_settings_key_e key, void **value);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_INVALID_PARAMETER Invalid parameter
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_INVALID_PARAMETER Invalid parameter
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-typedef int (*system_setting_set_value_cb)(system_settings_key_e key, system_setting_data_type_e data_type, void *value);
+typedef int (*system_setting_set_value_cb)(system_settings_key_e key, void *value);
+typedef int (*system_setting_add_value_cb)(system_settings_key_e key, void *value);
+typedef int (*system_setting_del_value_cb)(system_settings_key_e key, void *value);
+typedef int (*system_setting_list_value_cb)(system_settings_key_e key, system_settings_iter_cb callback, void *user_data);
+
+typedef int (*system_setting_feature_check_cb)(void *value);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_INVALID_PARAMETER Invalid parameter
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_INVALID_PARAMETER Invalid parameter
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 typedef int (*system_setting_set_changed_callback_cb)(system_settings_key_e key, system_settings_changed_cb callback, void *user_data);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_INVALID_PARAMETER Invalid parameter
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_INVALID_PARAMETER Invalid parameter
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 typedef int (*system_setting_unset_changed_callback_cb)(system_settings_key_e key);
 
@@ -127,10 +154,10 @@ typedef int (*system_setting_unset_changed_callback_cb)(system_settings_key_e ke
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_INVALID_PARAMETER Invalid parameter
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_INVALID_PARAMETER Invalid parameter
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
  */
 typedef struct {
        system_settings_key_e key;                                                                              /**< key */
@@ -140,8 +167,16 @@ typedef struct {
 
        system_setting_set_changed_callback_cb set_changed_cb;                  /**< function pointer to register for notification callback */
        system_setting_unset_changed_callback_cb unset_changed_cb ;             /**< function pointer to un-register for notification callback */
-
        system_settings_changed_cb changed_cb;                                                  /* registered by user application */
+
+       system_setting_add_value_cb add_value_cb;
+       system_setting_del_value_cb del_value_cb;
+       system_setting_list_value_cb list_value_cb;
+
+       system_setting_feature_check_cb feature_check_cb;
+
+       callback_list changed_cb_list;
+
        void *user_data;                                                                                                /* user_data */
 
 } system_setting_s;
@@ -152,11 +187,12 @@ typedef system_setting_s *system_setting_h;
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_INVALID_PARAMETER Invalid parameter
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_INVALID_PARAMETER Invalid parameter
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @retval     #SYSTEM_SETTINGS_ERROR_NOT_SUPPORTED Not support system-settings API
  */
 int system_settings_get_item(system_settings_key_e key, system_setting_h *item);
 
@@ -172,7 +208,7 @@ int system_settings_get_item(system_settings_key_e key, system_setting_h *item);
  * @param[out] value get the integer type value
  *
  * @return 0 on success, -1 on error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_vconf_get_value_int(const char *vconf_key, int *value);
 
@@ -185,7 +221,7 @@ int system_setting_vconf_get_value_int(const char *vconf_key, int *value);
  * @param[out] value get the bool type value
  *
  * @return 0 on success, -1 on error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_vconf_get_value_bool(const char *vconf_key, bool *value);
 
@@ -198,7 +234,7 @@ int system_setting_vconf_get_value_bool(const char *vconf_key, bool *value);
  * @param[out] value get the string(char*) type value
  *
  * @return 0 on success, -1 on error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_vconf_get_value_string(const char *vconf_key, char **value);
 
@@ -211,7 +247,7 @@ int system_setting_vconf_get_value_string(const char *vconf_key, char **value);
  * @param[in] value int type value
  *
  * @return 0 on success, -1 on error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_vconf_set_value_int(const char *vconf_key, int value);
 
@@ -224,7 +260,7 @@ int system_setting_vconf_set_value_int(const char *vconf_key, int value);
  * @param[in] value bool type value
  *
  * @return 0 on success, -1 on error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_vconf_set_value_bool(const char *vconf_key, bool value);
 
@@ -237,7 +273,7 @@ int system_setting_vconf_set_value_bool(const char *vconf_key, bool value);
  * @param[in] value string type value
  *
  * @return 0 on success, -1 on error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_vconf_set_value_string(const char *vconf_key, char *value);
 
@@ -249,10 +285,10 @@ int system_setting_vconf_set_value_string(const char *vconf_key, char *value);
  * @param[in] key
  * @param[in] slot internal slot to set the key (0~4)
  * @param[in] user_data user data
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_vconf_set_changed_cb(const char *vconf_key, system_settings_key_e key, int slot, void *user_data);
 
@@ -262,25 +298,61 @@ int system_setting_vconf_set_changed_cb(const char *vconf_key, system_settings_k
  * @since_tizen 2.3
  * @param[in] vconf_key vconf key name used in the code
  * @param[in] slot internal slot to set the key (0~4)
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_vconf_unset_changed_cb(const char *vconf_key, int slot);
 
 /**
  * @internal
+ * @brief Unset the system settings notification callback
+ * @since_tizen 4.0
+ * @param[in] key system_settings_key_e value to get vconf string
+ * @param[out] key_string string pointer to be assigned vconf string
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_NOT_SUPPORTED Not support system-settings API
+ */
+int system_settings_vconf_get_key_string(system_settings_key_e key, char **key_string);
+
+
+/**
+ * @internal
+ * @brief Unset the system settings notification callback
+ * @since_tizen 4.0
+ * @param[in] vconf_key vconf key name used in the code
+ * @param[in] key system_settings_key_e value.
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ */
+int system_setting_vconf_set_changed_multi_cb(const char *vconf_key, system_settings_key_e key);
+
+/**
+ * @internal
+ * @brief Unset the system settings notification callback
+ * @since_tizen 4.0
+ * @param[in] vconf_key vconf key name used in the code
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ */
+int system_setting_vconf_unset_changed_multi_cb(const char *vconf_key);
+
+/**
+ * @internal
  * @brief get current font size
  * @since_tizen 2.3
  * @param[in] key key name should be SYSTEM_SETTINGS_KEY_FONT_SIZE
  * @param[in] datatype should be SYSTEM_SETTING_DATA_TYPE_INT
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_get_font_size(system_settings_key_e key, system_setting_data_type_e data_type, void **value);
+int system_setting_get_font_size(system_settings_key_e key, void **value);
 
 /**
  * @internal
@@ -289,24 +361,24 @@ int system_setting_get_font_size(system_settings_key_e key, system_setting_data_
  * @param[in] key key name should be SYSTEM_SETTINGS_KEY_FONT_SIZE
  * @param[in] datatype should be SYSTEM_SETTING_DATA_TYPE_INT
  * @param[out] value the font size
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_set_font_size(system_settings_key_e key, system_setting_data_type_e data_type, void *value);
+int system_setting_set_font_size(system_settings_key_e key, void *value);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_set_changed_callback_font_size(system_settings_key_e key, system_settings_changed_cb callback, void *user_data);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_unset_changed_callback_font_size(system_settings_key_e key);
 
@@ -315,9 +387,9 @@ int system_setting_unset_changed_callback_font_size(system_settings_key_e key);
 /**
  * @internal
  * @since_tizen 2.3
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_get_incoming_call_ringtone(system_settings_key_e key, system_setting_data_type_e data_type, void **value);
+int system_setting_get_incoming_call_ringtone(system_settings_key_e key, void **value);
 
 /**
  * @internal
@@ -326,24 +398,42 @@ int system_setting_get_incoming_call_ringtone(system_settings_key_e key, system_
  * @param[in] key key name should be SYSTEM_SETTINGS_KEY_INCOMING_CALL_RINGTONE
  * @param[in] datatype should be SYSTEM_SETTING_DATA_TYPE_STRING
  * @param[out] value the ringtone
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_set_incoming_call_ringtone(system_settings_key_e key, system_setting_data_type_e data_type, void *value);
+int system_setting_set_incoming_call_ringtone(system_settings_key_e key, void *value);
+
+
+/**
+ * @todo add comment here
+ */
+int system_setting_add_incoming_call_ringtone(system_settings_key_e key, void *value);
+
+
+/**
+ * @todo add comment here
+ */
+int system_setting_del_incoming_call_ringtone(system_settings_key_e key, void *value);
+
+
+/**
+ * @todo add comment here
+ */
+int system_setting_list_incoming_call_ringtone(system_settings_key_e key, system_settings_iter_cb callback, void *data);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_set_changed_callback_incoming_call_ringtone(system_settings_key_e key, system_settings_changed_cb callback, void *user_data);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_unset_changed_callback_incoming_call_ringtone(system_settings_key_e key);
 
@@ -351,9 +441,9 @@ int system_setting_unset_changed_callback_incoming_call_ringtone(system_settings
 /**
  * @internal
  * @since_tizen 2.3
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_get_email_alert_ringtone(system_settings_key_e key, system_setting_data_type_e data_type, void **value);
+int system_setting_get_email_alert_ringtone(system_settings_key_e key, void **value);
 
 /**
  * @internal
@@ -362,24 +452,24 @@ int system_setting_get_email_alert_ringtone(system_settings_key_e key, system_se
  * @param[in] key key name should be SYSTEM_SETTINGS_KEY_EMAIL_ALERT_RINGTONE
  * @param[in] datatype should be SYSTEM_SETTING_DATA_TYPE_STRING
  * @param[out] value the alert ringtone
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_set_email_alert_ringtone(system_settings_key_e key, system_setting_data_type_e data_type, void *value);
+int system_setting_set_email_alert_ringtone(system_settings_key_e key, void *value);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_set_changed_callback_email_alert_ringtone(system_settings_key_e key, system_settings_changed_cb callback, void *user_data);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_unset_changed_callback_email_alert_ringtone(system_settings_key_e key);
 
@@ -388,9 +478,9 @@ int system_setting_unset_changed_callback_email_alert_ringtone(system_settings_k
 /**
  * @internal
  * @since_tizen 2.3
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_get_wallpaper_home_screen(system_settings_key_e key, system_setting_data_type_e data_type, void **value);
+int system_setting_get_wallpaper_home_screen(system_settings_key_e key, void **value);
 
 /**
  * @internal
@@ -399,24 +489,24 @@ int system_setting_get_wallpaper_home_screen(system_settings_key_e key, system_s
  * @param[in] key key name should be SYSTEM_SETTINGS_KEY_WALLPAPER_HOME_SCREEN
  * @param[in] datatype should be SYSTEM_SETTING_DATA_TYPE_STRING
  * @param[out] value the wallpaper
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_set_wallpaper_home_screen(system_settings_key_e key, system_setting_data_type_e data_type, void *value);
+int system_setting_set_wallpaper_home_screen(system_settings_key_e key, void *value);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_set_changed_callback_wallpaper_home_screen(system_settings_key_e key, system_settings_changed_cb callback, void *user_data);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_unset_changed_callback_wallpaper_home_screen(system_settings_key_e key);
 
@@ -425,9 +515,9 @@ int system_setting_unset_changed_callback_wallpaper_home_screen(system_settings_
 /**
  * @internal
  * @since_tizen 2.3
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_get_wallpaper_lock_screen(system_settings_key_e key, system_setting_data_type_e data_type, void **value);
+int system_setting_get_wallpaper_lock_screen(system_settings_key_e key, void **value);
 
 /**
  * @internal
@@ -436,24 +526,24 @@ int system_setting_get_wallpaper_lock_screen(system_settings_key_e key, system_s
  * @param[in] key key name should be SYSTEM_SETTINGS_KEY_WALLPAPER_LOCK_SCREEN
  * @param[in] datatype should be SYSTEM_SETTING_DATA_TYPE_STRING
  * @param[out] value the lock screen
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_set_wallpaper_lock_screen(system_settings_key_e key, system_setting_data_type_e data_type, void *value);
+int system_setting_set_wallpaper_lock_screen(system_settings_key_e key, void *value);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_set_changed_callback_wallpaper_lock_screen(system_settings_key_e key, system_settings_changed_cb callback, void *user_data);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_unset_changed_callback_wallpaper_lock_screen(system_settings_key_e key);
 
@@ -461,17 +551,17 @@ int system_setting_unset_changed_callback_wallpaper_lock_screen(system_settings_
 /**
  * @internal
  * @since_tizen 2.3
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_get_default_font_type(system_settings_key_e key, system_setting_data_type_e data_type, void **value);
+int system_setting_get_default_font_type(system_settings_key_e key, void **value);
 
 
 /**
  * @internal
  * @since_tizen 2.3
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_get_font_type(system_settings_key_e key, system_setting_data_type_e data_type, void **value);
+int system_setting_get_font_type(system_settings_key_e key, void **value);
 
 /**
  * @internal
@@ -480,24 +570,24 @@ int system_setting_get_font_type(system_settings_key_e key, system_setting_data_
  * @param[in] key key name should be SYSTEM_SETTINGS_KEY_FONT_TYPE
  * @param[in] datatype should be SYSTEM_SETTING_DATA_TYPE_STRING
  * @param[out] value the font type
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_set_font_type(system_settings_key_e key, system_setting_data_type_e data_type, void *value);
+int system_setting_set_font_type(system_settings_key_e key, void *value);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_set_changed_callback_font_type(system_settings_key_e key, system_settings_changed_cb callback, void *user_data);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_unset_changed_callback_font_type(system_settings_key_e key);
 
@@ -505,9 +595,9 @@ int system_setting_unset_changed_callback_font_type(system_settings_key_e key);
 /**
  * @internal
  * @since_tizen 2.3
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_get_motion_activation(system_settings_key_e key, system_setting_data_type_e data_type, void **value);
+int system_setting_get_motion_activation(system_settings_key_e key, void **value);
 
 /**
  * @internal
@@ -516,24 +606,24 @@ int system_setting_get_motion_activation(system_settings_key_e key, system_setti
  * @param[in] key key name should be SYSTEM_SETTINGS_KEY_MOTION_ACTIVATION
  * @param[in] datatype should be SYSTEM_SETTING_DATA_TYPE_BOOL
  * @param[out] value the motion activation
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_set_motion_activation(system_settings_key_e key, system_setting_data_type_e data_type, void *value);
+int system_setting_set_motion_activation(system_settings_key_e key, void *value);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_set_changed_callback_motion_activation(system_settings_key_e key, system_settings_changed_cb callback, void *user_data);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_unset_changed_callback_motion_activation(system_settings_key_e key);
 
@@ -541,9 +631,9 @@ int system_setting_unset_changed_callback_motion_activation(system_settings_key_
 /**
  * @internal
  * @since_tizen 2.3
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_get_usb_debugging_option(system_settings_key_e key, system_setting_data_type_e data_type, void **value);
+int system_setting_get_usb_debugging_option(system_settings_key_e key, void **value);
 
 /**
  * @internal
@@ -552,24 +642,24 @@ int system_setting_get_usb_debugging_option(system_settings_key_e key, system_se
  * @param[in] key key name should be SYSTEM_SETTINGS_KEY_USB_DEBUGGING_ENABLED
  * @param[in] datatype should be SYSTEM_SETTING_DATA_TYPE_BOOL
  * @param[out] value the usb debug option
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_set_usb_debugging_option(system_settings_key_e key, system_setting_data_type_e data_type, void *value);
+int system_setting_set_usb_debugging_option(system_settings_key_e key, void *value);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_set_changed_callback_usb_debugging_option(system_settings_key_e key, system_settings_changed_cb callback, void *user_data);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_unset_changed_callback_usb_debugging_option(system_settings_key_e key);
 
@@ -577,9 +667,9 @@ int system_setting_unset_changed_callback_usb_debugging_option(system_settings_k
 /**
  * @internal
  * @since_tizen 2.3
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_get_3g_data_network(system_settings_key_e key, system_setting_data_type_e data_type, void **value);
+int system_setting_get_3g_data_network(system_settings_key_e key, void **value);
 
 /**
  * @internal
@@ -588,277 +678,310 @@ int system_setting_get_3g_data_network(system_settings_key_e key, system_setting
  * @param[in] key key name should be SYSTEM_SETTINGS_KEY_3G_DATA_NETWORK_ENABLED
  * @param[in] datatype should be SYSTEM_SETTING_DATA_TYPE_BOOL
  * @param[out] value the 3G data network option
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_set_3g_data_network(system_settings_key_e key, system_setting_data_type_e data_type, void *value);
+int system_setting_set_3g_data_network(system_settings_key_e key, void *value);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_set_changed_callback_3g_data_network(system_settings_key_e key, system_settings_changed_cb callback, void *user_data);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_unset_changed_callback_3g_data_network(system_settings_key_e key);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_get_tap_and_hold_delay(system_settings_key_e key, system_setting_data_type_e data_type, void **value);
+int system_setting_get_tap_and_hold_delay(system_settings_key_e key, void **value);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_set_tap_and_hold_delay(system_settings_key_e key, system_setting_data_type_e data_type, void *value);
+int system_setting_set_tap_and_hold_delay(system_settings_key_e key, void *value);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_set_changed_callback_tap_and_hold_delay(system_settings_key_e key, system_settings_changed_cb callback, void *user_data);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_unset_changed_callback_tap_and_hold_delay(system_settings_key_e key);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_get_lockscreen_app(system_settings_key_e key, system_setting_data_type_e data_type, void **value);
+int system_setting_get_lockscreen_app(system_settings_key_e key, void **value);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_set_lockscreen_app(system_settings_key_e key, system_setting_data_type_e data_type, void *value);
+int system_setting_set_lockscreen_app(system_settings_key_e key, void *value);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_set_changed_callback_lockscreen_app(system_settings_key_e key, system_settings_changed_cb callback, void *user_data);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_unset_changed_callback_lockscreen_app(system_settings_key_e key);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_get_locale_country(system_settings_key_e key, system_setting_data_type_e data_type, void **value);
+int system_setting_get_locale_country(system_settings_key_e key, void **value);
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_set_locale_country(system_settings_key_e key, system_setting_data_type_e data_type, void *value);
+int system_setting_set_locale_country(system_settings_key_e key, void *value);
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_set_changed_callback_locale_country(system_settings_key_e key, system_settings_changed_cb callback, void *user_data);
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_unset_changed_callback_locale_country(system_settings_key_e key);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_get_locale_language(system_settings_key_e key, system_setting_data_type_e data_type, void **value);
+int system_setting_get_locale_language(system_settings_key_e key, void **value);
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_set_locale_language(system_settings_key_e key, system_setting_data_type_e data_type, void *value);
+int system_setting_set_locale_language(system_settings_key_e key, void *value);
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_set_changed_callback_locale_language(system_settings_key_e key, system_settings_changed_cb callback, void *user_data);
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_unset_changed_callback_locale_language(system_settings_key_e key);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_get_locale_timeformat_24hour(system_settings_key_e key, system_setting_data_type_e data_type, void **value);
+int system_setting_get_locale_timeformat_24hour(system_settings_key_e key, void **value);
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_set_locale_timeformat_24hour(system_settings_key_e key, system_setting_data_type_e data_type, void *value);
+int system_setting_set_locale_timeformat_24hour(system_settings_key_e key, void *value);
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_set_changed_callback_locale_timeformat_24hour(system_settings_key_e key, system_settings_changed_cb callback, void *user_data);
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_unset_changed_callback_locale_timeformat_24hour(system_settings_key_e key);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ */
+int system_setting_get_locale_timezone(system_settings_key_e key, void **value);
+
+/**
+ * @internal
+ * @since_tizen 3.0
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_get_locale_timezone(system_settings_key_e key, system_setting_data_type_e data_type, void **value);
+int system_setting_set_locale_timezone(system_settings_key_e key, void *value);
+
+/**
+ * @internal
+ * @since_tizen 3.0
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ */
+int system_setting_set_changed_callback_locale_timezone(system_settings_key_e key, system_settings_changed_cb callback, void *user_data);
+
+/**
+ * @internal
+ * @since_tizen 3.0
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ */
+int system_setting_unset_changed_callback_locale_timezone(system_settings_key_e key);
+
+
+
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_set_changed_callback_locale_timezone_changed(system_settings_key_e key, system_settings_changed_cb callback, void *user_data);
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_unset_changed_callback_locale_timezone_changed(system_settings_key_e key);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_get_time_changed(system_settings_key_e key, system_setting_data_type_e data_type, void **value);
+int system_setting_get_time_changed(system_settings_key_e key, void **value);
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_set_changed_callback_time_changed(system_settings_key_e key, system_settings_changed_cb callback, void *user_data);
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_unset_changed_callback_time_changed(system_settings_key_e key);
 
@@ -866,302 +989,302 @@ int system_setting_unset_changed_callback_time_changed(system_settings_key_e key
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_get_sound_lock(system_settings_key_e key, system_setting_data_type_e data_type, void **value);
+int system_setting_get_sound_lock(system_settings_key_e key, void **value);
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_set_changed_callback_sound_lock(system_settings_key_e key, system_settings_changed_cb callback, void *user_data);
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_unset_changed_callback_sound_lock(system_settings_key_e key);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_get_sound_silent_mode(system_settings_key_e key, system_setting_data_type_e data_type, void **value);
+int system_setting_get_sound_silent_mode(system_settings_key_e key, void **value);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_set_sound_silent_mode(system_settings_key_e key, system_setting_data_type_e data_type, void *value);
+int system_setting_set_sound_silent_mode(system_settings_key_e key, void *value);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_set_changed_callback_sound_silent_mode(system_settings_key_e key, system_settings_changed_cb callback, void *user_data);
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_unset_changed_callback_sound_silent_mode(system_settings_key_e key);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_get_sound_touch(system_settings_key_e key, system_setting_data_type_e data_type, void **value);
+int system_setting_get_sound_touch(system_settings_key_e key, void **value);
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_set_changed_callback_sound_touch(system_settings_key_e key, system_settings_changed_cb callback, void *user_data);
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_unset_changed_callback_sound_touch(system_settings_key_e key);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_get_auto_rotation_mode(system_settings_key_e key, system_setting_data_type_e data_type, void **value);
+int system_setting_get_auto_rotation_mode(system_settings_key_e key, void **value);
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_set_auto_rotation_mode(system_settings_key_e key, system_setting_data_type_e data_type, void *value);
+int system_setting_set_auto_rotation_mode(system_settings_key_e key, void *value);
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_set_changed_callback_auto_rotation_mode(system_settings_key_e key, system_settings_changed_cb callback, void *user_data);
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_unset_changed_callback_auto_rotation_mode(system_settings_key_e key);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_get_screen_backlight_time(system_settings_key_e key, system_setting_data_type_e data_type, void **value);
+int system_setting_get_screen_backlight_time(system_settings_key_e key, void **value);
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_set_screen_backlight_time(system_settings_key_e key, system_setting_data_type_e data_type, void *value);
+int system_setting_set_screen_backlight_time(system_settings_key_e key, void *value);
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_set_changed_callback_screen_backlight_time(system_settings_key_e key, system_settings_changed_cb callback, void *user_data);
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_unset_changed_callback_screen_backlight_time(system_settings_key_e key);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_get_sound_notification(system_settings_key_e key, system_setting_data_type_e data_type, void **value);
+int system_setting_get_sound_notification(system_settings_key_e key, void **value);
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_set_sound_notification(system_settings_key_e key, system_setting_data_type_e data_type, void *value);
+int system_setting_set_sound_notification(system_settings_key_e key, void *value);
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_set_changed_callback_sound_notification(system_settings_key_e key, system_settings_changed_cb callback, void *user_data);
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_unset_changed_callback_sound_notification(system_settings_key_e key);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_get_notification_repetition_period(system_settings_key_e key, system_setting_data_type_e data_type, void **value);
+int system_setting_get_notification_repetition_period(system_settings_key_e key, void **value);
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_set_notification_repetition_period(system_settings_key_e key, system_setting_data_type_e data_type, void *value);
+int system_setting_set_notification_repetition_period(system_settings_key_e key, void *value);
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_set_changed_callback_notification_repetition_period(system_settings_key_e key, system_settings_changed_cb callback, void *user_data);
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_unset_changed_callback_notification_repetition_period(system_settings_key_e key);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_get_device_name(system_settings_key_e key, system_setting_data_type_e data_type, void **value);
+int system_setting_get_device_name(system_settings_key_e key, void **value);
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_set_changed_callback_device_name(system_settings_key_e key, system_settings_changed_cb callback, void *user_data);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_unset_changed_callback_device_name(system_settings_key_e key);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_get_network_flight_mode(system_settings_key_e key, system_setting_data_type_e data_type, void **value);
+int system_setting_get_network_flight_mode(system_settings_key_e key, void **value);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_set_changed_callback_network_flight_mode(system_settings_key_e key, system_settings_changed_cb callback, void *user_data);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_unset_changed_callback_network_flight_mode(system_settings_key_e key);
 
@@ -1170,30 +1293,30 @@ int system_setting_unset_changed_callback_network_flight_mode(system_settings_ke
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_get_network_wifi_notification(system_settings_key_e key, system_setting_data_type_e data_type, void **value);
+int system_setting_get_network_wifi_notification(system_settings_key_e key, void **value);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_set_changed_callback_network_wifi_notification(system_settings_key_e key, system_settings_changed_cb callback, void *user_data);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_unset_changed_callback_network_wifi_notification(system_settings_key_e key);
 
@@ -1202,44 +1325,265 @@ int system_setting_unset_changed_callback_network_wifi_notification(system_setti
  * @internal
  * @brief get current Idle Lock State
  * @since_tizen 2.3.1
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_get_lock_state(system_settings_key_e key, system_setting_data_type_e data_type, void **value);
+int system_setting_get_lock_state(system_settings_key_e key, void **value);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
-int system_setting_set_lock_state(system_settings_key_e key, system_setting_data_type_e data_type, void *value);
+int system_setting_set_lock_state(system_settings_key_e key, void *value);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_set_changed_callback_lock_state(system_settings_key_e key, system_settings_changed_cb callback, void *user_data);
 
 /**
  * @internal
  * @since_tizen 2.3
- * @return  0 on success, otherwise a negative error value
- * @retval  #SYSTEM_SETTINGS_ERROR_NONE Successful
- * @retval  #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
- * @retval  #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
  */
 int system_setting_unset_changed_callback_lock_state(system_settings_key_e key);
 
+/**
+ * @internal
+ * @brief get current ADS ID
+ * @since_tizen 3.0
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ */
+int system_setting_get_ads_id(system_settings_key_e key, void **value);
+
+/**
+ * @internal
+ * @brief set ADS ID
+ * @since_tizen 3.0
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ */
+int system_setting_set_ads_id(system_settings_key_e key, void *value);
+
+/**
+ * @internal
+ * @since_tizen 3.0
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ */
+int system_setting_set_changed_callback_ads_id(system_settings_key_e key, system_settings_changed_cb callback, void *user_data);
+
+/**
+ * @internal
+ * @since_tizen 3.0
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ */
+int system_setting_unset_changed_callback_ads_id(system_settings_key_e key);
+
+/**
+ * @internal
+ * @brief get current UDS status
+ * @since_tizen 3.0
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ */
+int system_setting_get_uds_state(system_settings_key_e key, void **value);
+
+/**
+ * @internal
+ * @since_tizen 3.0
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ */
+int system_setting_set_changed_callback_uds_state(system_settings_key_e key, system_settings_changed_cb callback, void *user_data);
+
+/**
+ * @internal
+ * @since_tizen 3.0
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ */
+int system_setting_unset_changed_callback_uds_state(system_settings_key_e key);
+
+
+/**
+ * @internal
+ * @since_tizen 3.0
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ */
+int system_setting_set_changed_callback_uds_pkg_list(system_settings_key_e key, system_settings_changed_cb callback, void *user_data);
+
+
+/**
+ * @internal
+ * @since_tizen 4.0
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ */
+int system_setting_get_accessibility_tts(system_settings_key_e key, void **value);
+/**
+ * @internal
+ * @since_tizen 4.0
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ */
+int system_setting_set_changed_callback_accessibility_tts(system_settings_key_e key, system_settings_changed_cb callback, void *user_data);
+/**
+ * @internal
+ * @since_tizen 4.0
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ */
+int system_setting_unset_changed_callback_accessibility_tts(system_settings_key_e key);
+
+/**
+ * @internal
+ * @since_tizen 4.0
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ */
+int system_setting_get_vibration(system_settings_key_e key, void **value);
+
+/**
+ * @internal
+ * @since_tizen 4.0
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ */
+int system_setting_set_vibration(system_settings_key_e key, void *value);
 
+/**
+ * @internal
+ * @since_tizen 4.0
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ */
+int system_setting_set_changed_callback_vibration(system_settings_key_e key, system_settings_changed_cb callback, void *user_data);
+
+/**
+ * @internal
+ * @since_tizen 4.0
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ */
+int system_setting_unset_changed_callback_vibration(system_settings_key_e key);
+
+/**
+ * @internal
+ * @since_tizen 3.0
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_PERMISSION_DENIED Permission violation error
+ */
+int system_setting_unset_changed_callback_uds_pkg_list(system_settings_key_e key);
+
+/**
+ * @internal
+ * @since_tizen 4.0
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_NOT_SUPPORTED Not support system-settings API
+ */
+int system_setting_feature_check_incoming_call(void * value);
+
+/**
+ * @internal
+ * @since_tizen 4.0
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_NOT_SUPPORTED Not support system-settings API
+ */
+int system_setting_feature_check_home_screen(void * value);
+
+/**
+ * @internal
+ * @since_tizen 4.0
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_NOT_SUPPORTED Not support system-settings API
+ */
+int system_setting_feature_check_lock_screen(void * value);
+
+/**
+ * @internal
+ * @since_tizen 4.0
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_NOT_SUPPORTED Not support system-settings API
+ */
+int system_setting_feature_check_notification_email(void * value);
+
+/**
+ * @internal
+ * @since_tizen 4.0
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_NOT_SUPPORTED Not support system-settings API
+ */
+int system_setting_feature_check_wifi(void * value);
+
+/**
+ * @internal
+ * @since_tizen 4.0
+ * @return     0 on success, otherwise a negative error value
+ * @retval     #SYSTEM_SETTINGS_ERROR_NONE Successful
+ * @retval     #SYSTEM_SETTINGS_ERROR_IO_ERROR Internal I/O error
+ * @retval     #SYSTEM_SETTINGS_ERROR_NOT_SUPPORTED Not support system-settings API
+ */
+int system_setting_feature_check_telephony(void *value);
 /*// */