USB: Gadget: Add Samsung S3C24XX USB High-Speed controller driver

The Samsung's S3C2416, S3C2443 and S3C2450 includes a USB High-Speed
device controller module. This driver enables support for USB high-speed
gadget functionality for the Samsung S3C24xx SoC's that include this
controller.

Signed-off-by: Thomas Abraham <thomas.ab@samsung.com>
Signed-off-by: Sangbeom Kim <sbkim73@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Alexander Neumann <alexander@bumpern.de>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/usb/gadget/Kconfig

@@ -356,6 +356,23 @@ config USB_S3C2410_DEBUG
 	boolean "S3C2410 udc debug messages"
 	depends on USB_GADGET_S3C2410
 
+config USB_GADGET_S3C_HSUDC
+	boolean "S3C2416, S3C2443 and S3C2450 USB Device Controller"
+	depends on ARCH_S3C2410
+	select USB_GADGET_DUALSPEED
+	help
+	  Samsung's S3C2416, S3C2443 and S3C2450 is an ARM9 based SoC
+	  integrated with dual speed USB 2.0 device controller. It has
+	  8 endpoints, as well as endpoint zero.
+
+	  This driver has been tested on S3C2416 and S3C2450 processors.
+
+config USB_S3C_HSUDC
+	tristate
+	depends on USB_GADGET_S3C_HSUDC
+	default USB_GADGET
+	select USB_GADGET_SELECTED
+
 config USB_GADGET_PXA_U2O
 	boolean "PXA9xx Processor USB2.0 controller"
 	select USB_GADGET_DUALSPEED

drivers/usb/gadget/Makefile

@@ -22,6 +22,7 @@ obj-$(CONFIG_USB_R8A66597)	+= r8a66597-udc.o
 obj-$(CONFIG_USB_FSL_QE)	+= fsl_qe_udc.o
 obj-$(CONFIG_USB_CI13XXX_PCI)	+= ci13xxx_pci.o
 obj-$(CONFIG_USB_S3C_HSOTG)	+= s3c-hsotg.o
+obj-$(CONFIG_USB_S3C_HSUDC)	+= s3c-hsudc.o
 obj-$(CONFIG_USB_LANGWELL)	+= langwell_udc.o
 obj-$(CONFIG_USB_EG20T)		+= pch_udc.o
 obj-$(CONFIG_USB_PXA_U2O)	+= mv_udc.o

drivers/usb/gadget/gadget_chips.h

@@ -136,6 +136,12 @@
 #define gadget_is_s3c_hsotg(g)    0
 #endif
 
+#ifdef CONFIG_USB_S3C_HSUDC
+#define gadget_is_s3c_hsudc(g) (!strcmp("s3c-hsudc", (g)->name))
+#else
+#define gadget_is_s3c_hsudc(g) 0
+#endif
+
 #ifdef CONFIG_USB_GADGET_EG20T
 #define	gadget_is_pch(g)	(!strcmp("pch_udc", (g)->name))
 #else
@@ -215,6 +221,8 @@ static inline int usb_gadget_controller_number(struct usb_gadget *gadget)
 		return 0x28;
 	else if (gadget_is_renesas_usbhs(gadget))
 		return 0x29;
+	else if (gadget_is_s3c_hsudc(gadget))
+		return 0x30;
 
 	return -ENOENT;
 }