lora: shift drivers to dedicated loramac-node folder

Move the current implementation of the LoRa API using `loramac-node` to
a dedicated folder in preparation for the LoRa basics modem
implementation.

Signed-off-by: Jordan Yates <jordan@embeint.com>

Author: JordanYates

drivers/lora/CMakeLists.txt

@@ -1,23 +1,5 @@
 # SPDX-License-Identifier: Apache-2.0
 
-# LoRa drivers depend on the include directories exposed by the loramac-node
-# library. Hence, if it exists then the source files are added to that otherwise
-# a library with same name is created.
-if(TARGET loramac-node)
-	set(ZEPHYR_CURRENT_LIBRARY loramac-node)
-else()
-	zephyr_library_named(loramac-node)
-endif()
+zephyr_sources_ifdef(CONFIG_LORA_SHELL shell.c)
 
-zephyr_library_sources_ifdef(CONFIG_LORA_SHELL shell.c)
-zephyr_library_sources_ifdef(CONFIG_HAS_SEMTECH_RADIO_DRIVERS hal_common.c)
-zephyr_library_sources_ifdef(CONFIG_HAS_SEMTECH_RADIO_DRIVERS sx12xx_common.c)
-zephyr_library_sources_ifdef(CONFIG_LORA_SX127X sx127x.c)
-
-if (CONFIG_LORA_SX126X OR CONFIG_LORA_STM32WL_SUBGHZ_RADIO)
-	zephyr_library_sources(sx126x.c)
-endif()
-
-zephyr_library_sources_ifdef(CONFIG_LORA_SX126X sx126x_standalone.c)
-zephyr_library_sources_ifdef(CONFIG_LORA_STM32WL_SUBGHZ_RADIO sx126x_stm32wl.c)
-zephyr_library_sources_ifdef(CONFIG_LORA_RYLRXXX rylrxxx.c)
+add_subdirectory_ifdef(CONFIG_LORA_MODULE_BACKEND_LORAMAC_NODE loramac_node)

drivers/lora/Kconfig

@@ -15,6 +15,15 @@ menuconfig LORA
 
 if LORA
 
+choice LORA_MODULE_BACKEND
+	prompt "Low-level LoRa modem integration to use"
+
+config LORA_MODULE_BACKEND_LORAMAC_NODE
+	bool "loramac-node backend"
+	depends on ZEPHYR_LORAMAC_NODE_MODULE
+
+endchoice
+
 module = LORA
 module-str = lora
 source "subsys/logging/Kconfig.template.log_config"
@@ -31,8 +40,7 @@ config LORA_INIT_PRIORITY
 	help
 	  System initialization priority for LoRa drivers.
 
-source "drivers/lora/Kconfig.sx12xx"
-
-source "drivers/lora/Kconfig.rylrxxx"
+rsource "Kconfig.sx12xx"
+rsource "Kconfig.rylrxxx"
 
 endif # LORA

drivers/lora/loramac_node/CMakeLists.txt

@@ -0,0 +1,22 @@
+# SPDX-License-Identifier: Apache-2.0
+
+# LoRa drivers depend on the include directories exposed by the loramac-node
+# library. Hence, if it exists then the source files are added to that otherwise
+# a library with same name is created.
+if(TARGET loramac-node)
+	set(ZEPHYR_CURRENT_LIBRARY loramac-node)
+else()
+	zephyr_library_named(loramac-node)
+endif()
+
+zephyr_library_sources_ifdef(CONFIG_HAS_SEMTECH_RADIO_DRIVERS hal_common.c)
+zephyr_library_sources_ifdef(CONFIG_HAS_SEMTECH_RADIO_DRIVERS sx12xx_common.c)
+zephyr_library_sources_ifdef(CONFIG_LORA_SX127X sx127x.c)
+
+if (CONFIG_LORA_SX126X OR CONFIG_LORA_STM32WL_SUBGHZ_RADIO)
+	zephyr_library_sources(sx126x.c)
+endif()
+
+zephyr_library_sources_ifdef(CONFIG_LORA_SX126X sx126x_standalone.c)
+zephyr_library_sources_ifdef(CONFIG_LORA_STM32WL_SUBGHZ_RADIO sx126x_stm32wl.c)
+zephyr_library_sources_ifdef(CONFIG_LORA_RYLRXXX ../rylrxxx.c)