refactor: Align drivers with Zephyr file system conventions

PR: #400

app/drivers/CMakeLists.txt

@@ -0,0 +1,5 @@
+# Copyright (c) 2020 The ZMK Contributors
+# SPDX-License-Identifier: MIT
+
+add_subdirectory_ifdef(CONFIG_KSCAN kscan)
+add_subdirectory_ifdef(CONFIG_SENSOR sensor)

app/drivers/Kconfig

@@ -0,0 +1,5 @@
+# Copyright (c) 2020 The ZMK Contributors
+# SPDX-License-Identifier: MIT
+
+rsource "kscan/Kconfig"
+rsource "sensor/Kconfig"

app/drivers/kscan/CMakeLists.txt

@@ -0,0 +1,8 @@
+# Copyright (c) 2020 The ZMK Contributors
+# SPDX-License-Identifier: MIT
+
+zephyr_library()
+
+zephyr_library_sources_ifdef(CONFIG_ZMK_KSCAN_GPIO_DRIVER kscan_gpio_matrix.c)
+zephyr_library_sources_ifdef(CONFIG_ZMK_KSCAN_GPIO_DRIVER kscan_gpio_direct.c)
+zephyr_library_sources_ifdef(CONFIG_ZMK_KSCAN_GPIO_DRIVER kscan_gpio_demux.c)

app/drivers/kscan/Kconfig

@@ -0,0 +1,25 @@
+# Copyright (c) 2020 The ZMK Contributors
+# SPDX-License-Identifier: MIT
+
+config ZMK_KSCAN_GPIO_DRIVER
+	bool "Enable GPIO kscan driver to simulate key presses"
+	default y
+	select GPIO
+
+if ZMK_KSCAN_GPIO_DRIVER
+
+config ZMK_KSCAN_MATRIX_POLLING
+	bool "Poll for key event triggers instead of using interrupts on matrix boards."
+	default n
+
+config ZMK_KSCAN_DIRECT_POLLING
+	bool "Poll for key event triggers instead of using interrupts on direct wired boards."
+    default n
+
+endif
+
+config ZMK_KSCAN_INIT_PRIORITY
+	int "Keyboard scan driver init priority"
+	default 40
+	help
+	  Keyboard scan device driver initialization priority.

app/drivers/sensor/CMakeLists.txt

@@ -0,0 +1,5 @@
+# Copyright (c) 2020 The ZMK Contributors
+# SPDX-License-Identifier: MIT
+
+add_subdirectory_ifdef(CONFIG_ZMK_BATTERY_VOLTAGE_DIVIDER battery_voltage_divider)
+add_subdirectory_ifdef(CONFIG_EC11 ec11)

app/drivers/sensor/Kconfig

@@ -0,0 +1,5 @@
+# Copyright (c) 2020 The ZMK Contributors
+# SPDX-License-Identifier: MIT
+
+rsource "battery_voltage_divider/Kconfig"
+rsource "ec11/Kconfig"

app/drivers/sensor/battery_voltage_divider/CMakeLists.txt

@@ -0,0 +1,6 @@
+# Copyright (c) 2020 The ZMK Contributors
+# SPDX-License-Identifier: MIT
+
+zephyr_library()
+
+zephyr_library_sources(battery_voltage_divider.c)

app/drivers/sensor/battery_voltage_divider/Kconfig

@@ -0,0 +1,8 @@
+# Copyright (c) 2020 The ZMK Contributors
+# SPDX-License-Identifier: MIT
+
+config ZMK_BATTERY_VOLTAGE_DIVIDER
+	bool "ZMK battery voltage divider"
+	select ADC
+	help
+		Enable ZMK battery voltage divider driver for battery monitoring.

app/drivers/sensor/ec11/CMakeLists.txt

@@ -0,0 +1,9 @@
+# Copyright (c) 2020 The ZMK Contributors
+# SPDX-License-Identifier: MIT
+
+zephyr_include_directories(.)
+
+zephyr_library()
+
+zephyr_library_sources(ec11.c)
+zephyr_library_sources_ifdef(CONFIG_EC11_TRIGGER ec11_trigger.c)

app/drivers/sensor/ec11/Kconfig

@@ -1,35 +1,6 @@
 # Copyright (c) 2020 The ZMK Contributors
 # SPDX-License-Identifier: MIT
 
-config ZMK_KSCAN_GPIO_DRIVER
-	bool "Enable GPIO kscan driver to simulate key presses"
-	default y
-	select GPIO
-
-if ZMK_KSCAN_GPIO_DRIVER
-
-config ZMK_KSCAN_MATRIX_POLLING
-	bool "Poll for key event triggers instead of using interrupts on matrix boards."
-	default n
-
-config ZMK_KSCAN_DIRECT_POLLING
-	bool "Poll for key event triggers instead of using interrupts on direct wired boards."
-    default n
-
-endif
-
-config ZMK_KSCAN_INIT_PRIORITY
-	int "Keyboard scan driver init priority"
-	default 40
-	help
-	  Keyboard scan device driver initialization priority.
-
-config ZMK_BATTERY_VOLTAGE_DIVIDER
-	bool "ZMK battery voltage divider"
-	select ADC
-	help
-		Enable ZMK battery voltage divider driver for battery monitoring.
-
 menuconfig EC11
 	bool "EC11 Incremental Encoder Sensor"
 	depends on GPIO
@@ -76,4 +47,4 @@ config EC11_THREAD_STACK_SIZE
 	help
 	  Stack size of thread used by the driver to handle interrupts.
 
-endif # EC11
+endif # EC11

app/drivers/zephyr/CMakeLists.txt

@@ -1,14 +0,0 @@
-if(CONFIG_ZMK_KSCAN_GPIO_DRIVER)
-  zephyr_include_directories(.)
-
-  zephyr_library()
-  zephyr_library_sources(
-    kscan_gpio_matrix.c
-    kscan_gpio_direct.c
-    kscan_gpio_demux.c
-    )
-
-  zephyr_library_sources_ifdef(CONFIG_EC11 ec11.c)
-  zephyr_library_sources_ifdef(CONFIG_EC11_TRIGGER ec11_trigger.c)
-  zephyr_library_sources_ifdef(CONFIG_ZMK_BATTERY_VOLTAGE_DIVIDER battery_voltage_divider.c)
-endif()

app/drivers/zephyr/module.yml

@@ -1,3 +1,3 @@
 build:
-  cmake: zephyr
-  kconfig: zephyr/Kconfig
+  cmake: .
+  kconfig: Kconfig