Add SWDP driver interface API and bit-bang driver, add CMSIS-DAP compatible controller

drivers/CMakeLists.txt

@@ -31,6 +31,7 @@ add_subdirectory_ifdef(CONFIG_DAC dac)
 add_subdirectory_ifdef(CONFIG_DAI dai)
 add_subdirectory_ifdef(CONFIG_DISPLAY display)
 add_subdirectory_ifdef(CONFIG_DMA dma)
+add_subdirectory_ifdef(CONFIG_DP_DRIVER dp)
 add_subdirectory_ifdef(CONFIG_EDAC edac)
 add_subdirectory_ifdef(CONFIG_EEPROM eeprom)
 add_subdirectory_ifdef(CONFIG_ENTROPY_GENERATOR entropy)

drivers/Kconfig

@@ -24,6 +24,7 @@ source "drivers/dai/Kconfig"
 source "drivers/disk/Kconfig"
 source "drivers/display/Kconfig"
 source "drivers/dma/Kconfig"
+source "drivers/dp/Kconfig"
 source "drivers/edac/Kconfig"
 source "drivers/eeprom/Kconfig"
 source "drivers/entropy/Kconfig"

drivers/dp/CMakeLists.txt

@@ -0,0 +1,5 @@
+# Copyright (c) 2019, PHYTEC Messtechnik GmbH
+# SPDX-License-Identifier: Apache-2.0
+
+zephyr_library()
+zephyr_library_sources_ifdef(CONFIG_SWDP_BITBANG_DRIVER swdp_bitbang.c)

drivers/dp/Kconfig

@@ -0,0 +1,31 @@
+# Copyright (c) 2019 Phytec Messtechnik GmbH
+#
+# SPDX-License-Identifier: Apache-2.0
+
+menuconfig DP_DRIVER
+	bool "Debug Port interface driver [EXPERIMENTAL]"
+	select EXPERIMENTAL
+	help
+	  Enable Debug Port interface driver
+
+if DP_DRIVER
+
+module = DP_DRIVER
+module-str = dp drv
+source "subsys/logging/Kconfig.template.log_config"
+
+config DP_DRIVER_INIT_PRIO
+	int "Debug Port driver initialization priority"
+	default 80
+	help
+	  Set the initialization priority number.
+
+config SWDP_BITBANG_DRIVER
+	bool "Serial Wire Debug Port bit-bang driver"
+	default y
+	depends on DT_HAS_ZEPHYR_SWDP_GPIO_ENABLED
+	depends on GPIO
+	help
+	  Serial Wire Debug Port bit-bang driver.
+
+endif # DP_DRIVER