Merge pull request zephyrproject-rtos#4 from ccli8/nvt_m467_usbd

drivers: usb: numaker: Support USBD controller driver

boards/arm/numaker_pfm_m467/numaker_pfm_m467-pinctrl.dtsi

@@ -20,4 +20,12 @@
                 <PB3MFP_UART1_TXD 0x0000>,
                 <PC9MFP_GPIO 0x0000>;
     };
+
+    /* USBD multi-function pins for VBUS, D+, D-, and ID pins */
+    usbd_default: usbd_default {
+        pinmux = <PA12MFP_USB_VBUS 0x0000>,
+                 <PA13MFP_USB_D_N 0x0000>,
+                 <PA14MFP_USB_D_P 0x0000>,
+                 <PA15MFP_USB_OTG_ID 0x0000>;
+    };
 };

boards/arm/numaker_pfm_m467/numaker_pfm_m467.dts

@@ -61,6 +61,12 @@
 
 };
 
+&scc {
+    /* For USB 1.1 Host/Device/OTG, configure to 192MHz, which can generate necessary 48MHz.
+     * For USB 2.0 Host/Device/OTG or no USB application, comment out to use default. */
+    core-clock = <192000000>;
+};
+
 &gpiob {
 	status = "okay";
 };
@@ -101,3 +107,16 @@
 	pinctrl-names = "default";
 	status = "okay";
 };
+
+/* Notes for USBD (USB 1.1 Device Controller)
+ *
+ * 1. According to doc/releases/release-notes-2.7.rst, to allow generic USB device support
+ *    samples to be built, boards are supposed to add 'zephyr_udc0' node label for support
+ *    USB device controller and make it enabled.
+ * 2. On enabled, 'core-clock', as above, is required to to be 192MHz.
+ */
+zephyr_udc0: &usbd {
+	pinctrl-0 = <&usbd_default>;
+	pinctrl-names = "default";
+    status = "okay";
+};

drivers/usb/device/CMakeLists.txt

@@ -17,5 +17,6 @@ zephyr_library_sources_ifdef(CONFIG_USB_NATIVE_POSIX
 	)
 zephyr_library_sources_ifdef(CONFIG_USB_NRFX         usb_dc_nrfx.c)
 zephyr_library_sources_ifdef(CONFIG_USB_MCUX         usb_dc_mcux.c)
+zephyr_library_sources_ifdef(CONFIG_USB_DC_NUMAKER   usb_dc_numaker.c)
 
 endif()

drivers/usb/device/Kconfig

@@ -154,6 +154,64 @@ config USB_DC_MSG_QUEUE_LEN
 
 endif # USB_MCUX
 
+config USB_DC_NUMAKER
+    bool "Nuvoton NuMaker USB 1.1/2.0 device controller"
+	depends on SOC_FAMILY_NUMAKER
+    depends on USB_DC_NUMAKER_USBD || USB_DC_NUMAKER_HSUSBD
+	default USB_DC_NUMAKER_USBD || USB_DC_NUMAKER_HSUSBD
+	help
+	  Enables Nuvoton NuMaker USB device controller driver.
+
+DT_COMPAT_NUMAKER_USBD := nuvoton,numaker-usbd
+DT_COMPAT_NUMAKER_HSUSBD := nuvoton,numaker-hsusbd
+
+choice USB_DC_NUMAKER_TYPE
+	prompt "Nuvoton NuMaker USB device controller type"
+	default USB_DC_NUMAKER_USBD
+	help
+	  Select the type of Nuvoton NuMaker USB device controller.
+
+config USB_DC_NUMAKER_USBD
+	bool "Nuvoton NuMaker USB 1.1 device controller"
+	select HAS_NUMAKER_USBD
+    depends on $(dt_compat_enabled,$(DT_COMPAT_NUMAKER_USBD))
+	help
+	  Enable Nuvoton NuMaker USB 1.1 device controller driver.
+
+config USB_DC_NUMAKER_HSUSBD
+	bool "Nuvoton NuMaker high-speed USB 2.0 device controller"
+	select HAS_NUMAKER_HSUSBD
+    depends on $(dt_compat_enabled,$(DT_COMPAT_NUMAKER_HSUSBD))
+	help
+	  Enable Nuvoton NuMaker high-speed USB 2.0 device controller driver.
+
+endchoice
+
+config USB_DC_NUMAKER_USBD_WORKAROUND_DISALLOW_ISO_IN_OUT_SAME_NUM
+    bool "Enable workaround for disallowing Isochronous IN/OUT endpoints to be of same numbers"
+    default $(dt_nodelabel_bool_prop,usbd,disallow-iso-in-out-same-number)
+    depends on USB_DC_NUMAKER_USBD
+    help
+      Enable workaround which can allow Isochronous IN/OUT endpoints to be assigned
+      the same endpoint numbers. Note this workaround can only work for not more than
+      one Isochronous IN endpoint enabled, or behavior is undefined.
+
+config USB_DC_NUMAKER_MSG_QUEUE_SIZE
+	int "USB DC message queue size"
+	default 32
+	depends on USB_DC_NUMAKER
+	help
+	  Maximum number of messages the driver can queue for interrupt bottom half processing.
+
+config USB_DC_NUMAKER_MSG_HANDLER_THREAD_STACK_SIZE
+	int "USB DC message handler thread stack size"
+	default 1536
+	depends on USB_DC_NUMAKER
+	help
+	  Size of the stack for the message handler thread that is used in the driver
+	  for handling messages from the USB DC ISR, i.e. interrupt bottom half processing,
+	  including callbacks to the USB device stack.
+
 config USB_NATIVE_POSIX
 	bool "Native Posix USB Device Controller Driver"
 	help