USB: m66592-udc: peripheral controller driver for M66592

I would like to submit Renesas M66592 udc driver.

The M66592 is Renesas USB 2.0 peripheral controller.
This controller supports USB high-speed.

The driver has been tested Gadget Zero, Ethernet Gadget,
File-backed Storage Gadget, and passed usbtest script.

Signed-off-by : Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/usb/gadget/Kconfig

@@ -226,6 +226,24 @@ config USB_AT91
 	depends on USB_GADGET_AT91
 	default USB_GADGET
 
+config USB_GADGET_M66592
+	boolean "M66592 driver"
+	select USB_GADGET_DUALSPEED
+	help
+	   M66592 is a USB 2.0 peripheral controller.
+
+	   It has seven configurable endpoints, and endpoint zero.
+
+	   Say "y" to link the driver statically, or "m" to build a
+	   dynamically linked module called "m66592_udc" and force all
+	   gadget drivers to also be dynamically linked.
+
+config USB_M66592
+	tristate
+	depends on USB_GADGET_M66592
+	default USB_GADGET
+	select USB_GADGET_SELECTED
+
 config USB_GADGET_DUMMY_HCD
 	boolean "Dummy HCD (DEVELOPMENT)"
 	depends on (USB=y || (USB=m && USB_GADGET=m)) && EXPERIMENTAL

drivers/usb/gadget/Makefile

@@ -9,6 +9,7 @@ obj-$(CONFIG_USB_OMAP)		+= omap_udc.o
 obj-$(CONFIG_USB_LH7A40X)	+= lh7a40x_udc.o
 obj-$(CONFIG_USB_AT91)		+= at91_udc.o
 obj-$(CONFIG_USB_FSL_USB2)	+= fsl_usb2_udc.o
+obj-$(CONFIG_USB_M66592)	+= m66592-udc.o
 
 #
 # USB gadget drivers

drivers/usb/gadget/ether.c

@@ -301,6 +301,10 @@ MODULE_PARM_DESC(host_addr, "Host Ethernet Address");
 #define	DEV_CONFIG_SUBSET
 #endif
 
+#ifdef CONFIG_USB_GADGET_M66592
+#define DEV_CONFIG_CDC
+#endif
+
 
 /*-------------------------------------------------------------------------*/
 

drivers/usb/gadget/gadget_chips.h

@@ -125,6 +125,13 @@
 #define gadget_is_mpc8272(g)	0
 #endif
 
+#ifdef CONFIG_USB_GADGET_M66592
+#define	gadget_is_m66592(g)	!strcmp("m66592_udc", (g)->name)
+#else
+#define	gadget_is_m66592(g)	0
+#endif
+
+
 // CONFIG_USB_GADGET_SX2
 // CONFIG_USB_GADGET_AU1X00
 // ...
@@ -185,5 +192,7 @@ static inline int usb_gadget_controller_number(struct usb_gadget *gadget)
 		return 0x18;
 	else if (gadget_is_fsl_usb2(gadget))
 		return 0x19;
+	else if (gadget_is_m66592(gadget))
+		return 0x20;
 	return -ENOENT;
 }