logging: Kconfig cleanup of frontened related options

Cleanup in kconfig options in preparation for adding a
frontend that will use dictionary mode.

Signed-off-by: Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>

CMakeLists.txt

@@ -1700,7 +1700,7 @@ list(APPEND
   ${extra_post_build_byproducts}
   )
 
-if(CONFIG_LOG_DICTIONARY_SUPPORT)
+if(CONFIG_LOG_DICTIONARY_DB)
   set(log_dict_db_output --json=${PROJECT_BINARY_DIR}/log_dictionary.json)
 elseif(CONFIG_LOG_MIPI_SYST_USE_CATALOG)
   set(log_dict_db_output --syst=${PROJECT_BINARY_DIR}/mipi_syst_collateral.xml)

subsys/logging/CMakeLists.txt

@@ -95,6 +95,11 @@ if(NOT CONFIG_LOG_MODE_MINIMAL)
     log_backend_spinel.c
   )
 
+  zephyr_sources_ifdef(
+    CONFIG_LOG_FRONTEND_DICT_UART
+    log_frontend_dict_uart.c
+  )
+
   if(CONFIG_LOG_DICTIONARY_SUPPORT)
     zephyr_sources(log_output_dict.c)
   endif()

subsys/logging/Kconfig

@@ -14,12 +14,12 @@ rsource "Kconfig.mode"
 
 rsource "Kconfig.filtering"
 
+rsource "Kconfig.processing"
+
 if !LOG_FRONTEND_ONLY && !LOG_MODE_MINIMAL
 
 rsource "Kconfig.formatting"
 
-rsource "Kconfig.processing"
-
 rsource "Kconfig.backends"
 
 endif # !LOG_FRONTEND_ONLY && !LOG_MODE_MINIMAL

subsys/logging/Kconfig.formatting

@@ -47,6 +47,7 @@ config LOG_MIPI_SYST_CATALOG_ARGS_BUFFER_SIZE
 config LOG_DICTIONARY_SUPPORT
 	bool
 	depends on LOG2
+	select LOG_DICTIONARY_DB
 	help
 	  Enable support for dictionary based logging.
 

subsys/logging/Kconfig.misc

@@ -65,6 +65,9 @@ config LOG_MEM_UTILIZATION
 	  When enabled, maximum usage of memory used for log messages in deferred
 	  mode is tracked. It can be used to trim LOG_BUFFER_SIZE.
 
+config LOG_DICTIONARY_DB
+	bool
+
 config LOG2_MSG_PKG_ALWAYS_ADD_RO_STRING_IDXS
 	bool
 	help

subsys/logging/Kconfig.mode

@@ -3,6 +3,7 @@
 
 choice LOG_MODE
 	prompt "Mode"
+	depends on !LOG_FRONTEND_ONLY
 	default LOG_MODE_MINIMAL if LOG_DEFAULT_MINIMAL
 	default LOG_MODE_IMMEDIATE if LOG2_MODE_IMMEDIATE
 	default LOG_MODE_DEFERRED

subsys/logging/Kconfig.processing

@@ -14,11 +14,12 @@ config LOG_PRINTK_MAX_STRING_LENGTH
 	int "Maximum string length supported by LOG_PRINTK"
 	depends on LOG_PRINTK
 	depends on (!LOG_MODE_IMMEDIATE || USERSPACE)
+	depends on LOG1
 	default 128
 	help
 	  Array is allocated on the stack.
 
-if !LOG_MODE_IMMEDIATE
+if LOG_MODE_DEFERRED && !LOG_FRONTEND_ONLY
 
 config LOG_MODE_OVERFLOW
 	bool "Drop oldest message when full"
@@ -106,7 +107,7 @@ config LOG_BUFFER_SIZE
 	help
 	  Number of bytes dedicated for the logger internal buffer.
 
-endif # !LOG_MODE_IMMEDIATE
+endif # LOG_MODE_DEFERRED && !LOG_FRONTEND_ONLY
 
 if LOG1_DEFERRED