drivers: udc: add IT82xx2 USB device controller driver

Add UDC driver for IT82xx2 SoC. This commit passes tests with
1. samples/subsys/usb/cdc_acm/
2. samples/subsys/usb/console/
3. The extend endpoint test with CDC ACM tool
4. USB suspend/resume detection

Signed-off-by: Ren Chen <Ren.Chen@ite.com.tw>

Author: Chenhongren

drivers/usb/udc/CMakeLists.txt

@@ -12,3 +12,4 @@ zephyr_library_sources_ifdef(CONFIG_UDC_KINETIS udc_kinetis.c)
 zephyr_library_sources_ifdef(CONFIG_UDC_SKELETON udc_skeleton.c)
 zephyr_library_sources_ifdef(CONFIG_UDC_VIRTUAL udc_virtual.c)
 zephyr_library_sources_ifdef(CONFIG_UDC_STM32 udc_stm32.c)
+zephyr_library_sources_ifdef(CONFIG_UDC_IT82XX2 udc_it82xx2.c)

drivers/usb/udc/Kconfig

@@ -53,5 +53,6 @@ source "drivers/usb/udc/Kconfig.kinetis"
 source "drivers/usb/udc/Kconfig.skeleton"
 source "drivers/usb/udc/Kconfig.virtual"
 source "drivers/usb/udc/Kconfig.stm32"
+source "drivers/usb/udc/Kconfig.it82xx2"
 
 endif # UDC_DRIVER

drivers/usb/udc/Kconfig.it82xx2

@@ -0,0 +1,27 @@
+# Copyright (c) 2023 ITE Corporation.
+# SPDX-License-Identifier: Apache-2.0
+
+config UDC_IT82XX2
+	bool "IT82XX2 USB device controller driver"
+	default y
+	depends on DT_HAS_ITE_IT82XX2_USB_ENABLED
+	help
+	  IT82xx2 USB device controller driver.
+
+if UDC_IT82XX2
+
+config UDC_IT82xx2_EVENT_COUNT
+	int "UDC IT82xx2 event count"
+	range 4 64
+	default 8
+	help
+	  IT82xx2 event count.
+
+config UDC_IT82xx2_STACK_SIZE
+	int "IT82xx2 UDC driver internal thread stack size"
+	default 1024
+	help
+	  Size of the stack used in the driver for IT82xx2 USBD ISR event
+	  handling.
+
+endif # UDC_IT82XX2