Merge branch 'master' of git://git.denx.de/u-boot-usb

11 files changed, 390 insertions, 236 deletions

diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile
index 6288ecf09f..c915c79729 100644
--- a/drivers/usb/gadget/Makefile
+++ b/drivers/usb/gadget/Makefile
@@ -13,8 +13,8 @@ ifdef CONFIG_USB_GADGET
 obj-$(CONFIG_USB_GADGET_AT91) += at91_udc.o
 obj-$(CONFIG_USB_GADGET_ATMEL_USBA) += atmel_usba_udc.o
 obj-$(CONFIG_USB_GADGET_BCM_UDC_OTG_PHY) += bcm_udc_otg_phy.o
-obj-$(CONFIG_USB_GADGET_S3C_UDC_OTG) += s3c_udc_otg.o
-obj-$(CONFIG_USB_GADGET_S3C_UDC_OTG_PHY) += s3c_udc_otg_phy.o
+obj-$(CONFIG_USB_GADGET_DWC2_OTG) += dwc2_udc_otg.o
+obj-$(CONFIG_USB_GADGET_DWC2_OTG_PHY) += dwc2_udc_otg_phy.o
 obj-$(CONFIG_USB_GADGET_FOTG210) += fotg210.o
 obj-$(CONFIG_CI_UDC)	+= ci_udc.o
 obj-$(CONFIG_USB_GADGET_DOWNLOAD) += g_dnl.o
diff --git a/drivers/usb/gadget/bcm_udc_otg_phy.c b/drivers/usb/gadget/bcm_udc_otg_phy.c
index f8690b034c..10b2e132eb 100644
--- a/drivers/usb/gadget/bcm_udc_otg_phy.c
+++ b/drivers/usb/gadget/bcm_udc_otg_phy.c
@@ -9,10 +9,10 @@
 #include <asm/io.h>
 #include <asm/arch/sysmap.h>
 
-#include <usb/s3c_udc.h>
+#include "dwc2_udc_otg_priv.h"
 #include "bcm_udc_otg.h"
 
-void otg_phy_init(struct s3c_udc *dev)
+void otg_phy_init(struct dwc2_udc *dev)
 {
 	/* set Phy to driving mode */
 	wfld_clear(HSOTG_CTRL_BASE_ADDR + HSOTG_CTRL_PHY_P1CTL_OFFSET,
@@ -37,7 +37,7 @@ void otg_phy_init(struct s3c_udc *dev)
 		 HSOTG_CTRL_PHY_P1CTL_SOFT_RESET_MASK);
 }
 
-void otg_phy_off(struct s3c_udc *dev)
+void otg_phy_off(struct dwc2_udc *dev)
 {
 	/* Soft Disconnect */
 	wfld_set(HSOTG_BASE_ADDR + HSOTG_DCTL_OFFSET,
diff --git a/drivers/usb/gadget/s3c_udc_otg.c b/drivers/usb/gadget/dwc2_udc_otg.c
index 7a2d1e7d88..ffe2952f56 100644
--- a/drivers/usb/gadget/s3c_udc_otg.c
+++ b/drivers/usb/gadget/dwc2_udc_otg.c
@@ -1,6 +1,6 @@
 /*
- * drivers/usb/gadget/s3c_udc_otg.c
- * Samsung S3C on-chip full/high speed USB OTG 2.0 device controllers
+ * drivers/usb/gadget/dwc2_udc_otg.c
+ * Designware DWC2 on-chip full/high speed USB OTG 2.0 device controllers
  *
  * Copyright (C) 2008 for Samsung Electronics
  *
@@ -32,7 +32,8 @@
 
 #include <asm/mach-types.h>
 
-#include "regs-otg.h"
+#include "dwc2_udc_otg_regs.h"
+#include "dwc2_udc_otg_priv.h"
 #include <usb/lin_gadget_compat.h>
 
 /***********************************************************/
@@ -45,7 +46,7 @@
 #define DEBUG_OUT_EP 0
 #define DEBUG_IN_EP 0
 
-#include <usb/s3c_udc.h>
+#include <usb/dwc2_udc.h>
 
 #define EP0_CON		0
 #define EP_MASK		0xF
@@ -62,12 +63,12 @@ static char *state_names[] = {
 	"WAIT_FOR_NULL_COMPLETE",
 };
 
-#define DRIVER_DESC "S3C HS USB OTG Device Driver, (c) Samsung Electronics"
+#define DRIVER_DESC "DWC2 HS USB OTG Device Driver, (c) Samsung Electronics"
 #define DRIVER_VERSION "15 March 2009"
 
-struct s3c_udc	*the_controller;
+struct dwc2_udc	*the_controller;
 
-static const char driver_name[] = "s3c-udc";
+static const char driver_name[] = "dwc2-udc";
 static const char driver_desc[] = DRIVER_DESC;
 static const char ep0name[] = "ep0-control";
 
@@ -83,32 +84,32 @@ static dma_addr_t usb_ctrl_dma_addr;
 /*
   Local declarations.
 */
-static int s3c_ep_enable(struct usb_ep *ep,
+static int dwc2_ep_enable(struct usb_ep *ep,
 			 const struct usb_endpoint_descriptor *);
-static int s3c_ep_disable(struct usb_ep *ep);
-static struct usb_request *s3c_alloc_request(struct usb_ep *ep,
+static int dwc2_ep_disable(struct usb_ep *ep);
+static struct usb_request *dwc2_alloc_request(struct usb_ep *ep,
 					     gfp_t gfp_flags);
-static void s3c_free_request(struct usb_ep *ep, struct usb_request *);
-
-static int s3c_queue(struct usb_ep *ep, struct usb_request *, gfp_t gfp_flags);
-static int s3c_dequeue(struct usb_ep *ep, struct usb_request *);
-static int s3c_fifo_status(struct usb_ep *ep);
-static void s3c_fifo_flush(struct usb_ep *ep);
-static void s3c_ep0_read(struct s3c_udc *dev);
-static void s3c_ep0_kick(struct s3c_udc *dev, struct s3c_ep *ep);
-static void s3c_handle_ep0(struct s3c_udc *dev);
-static int s3c_ep0_write(struct s3c_udc *dev);
-static int write_fifo_ep0(struct s3c_ep *ep, struct s3c_request *req);
-static void done(struct s3c_ep *ep, struct s3c_request *req, int status);
-static void stop_activity(struct s3c_udc *dev,
+static void dwc2_free_request(struct usb_ep *ep, struct usb_request *);
+
+static int dwc2_queue(struct usb_ep *ep, struct usb_request *, gfp_t gfp_flags);
+static int dwc2_dequeue(struct usb_ep *ep, struct usb_request *);
+static int dwc2_fifo_status(struct usb_ep *ep);
+static void dwc2_fifo_flush(struct usb_ep *ep);
+static void dwc2_ep0_read(struct dwc2_udc *dev);
+static void dwc2_ep0_kick(struct dwc2_udc *dev, struct dwc2_ep *ep);
+static void dwc2_handle_ep0(struct dwc2_udc *dev);
+static int dwc2_ep0_write(struct dwc2_udc *dev);
+static int write_fifo_ep0(struct dwc2_ep *ep, struct dwc2_request *req);
+static void done(struct dwc2_ep *ep, struct dwc2_request *req, int status);
+static void stop_activity(struct dwc2_udc *dev,
 			  struct usb_gadget_driver *driver);
-static int udc_enable(struct s3c_udc *dev);
-static void udc_set_address(struct s3c_udc *dev, unsigned char address);
-static void reconfig_usbd(struct s3c_udc *dev);
-static void set_max_pktsize(struct s3c_udc *dev, enum usb_device_speed speed);
-static void nuke(struct s3c_ep *ep, int status);
-static int s3c_udc_set_halt(struct usb_ep *_ep, int value);
-static void s3c_udc_set_nak(struct s3c_ep *ep);
+static int udc_enable(struct dwc2_udc *dev);
+static void udc_set_address(struct dwc2_udc *dev, unsigned char address);
+static void reconfig_usbd(struct dwc2_udc *dev);
+static void set_max_pktsize(struct dwc2_udc *dev, enum usb_device_speed speed);
+static void nuke(struct dwc2_ep *ep, int status);
+static int dwc2_udc_set_halt(struct usb_ep *_ep, int value);
+static void dwc2_udc_set_nak(struct dwc2_ep *ep);
 
 void set_udc_gadget_private_data(void *p)
 {
@@ -123,19 +124,19 @@ void *get_udc_gadget_private_data(struct usb_gadget *gadget)
 	return gadget->dev.device_data;
 }
 
-static struct usb_ep_ops s3c_ep_ops = {
-	.enable = s3c_ep_enable,
-	.disable = s3c_ep_disable,
+static struct usb_ep_ops dwc2_ep_ops = {
+	.enable = dwc2_ep_enable,
+	.disable = dwc2_ep_disable,
 
-	.alloc_request = s3c_alloc_request,
-	.free_request = s3c_free_request,
+	.alloc_request = dwc2_alloc_request,
+	.free_request = dwc2_free_request,
 
-	.queue = s3c_queue,
-	.dequeue = s3c_dequeue,
+	.queue = dwc2_queue,
+	.dequeue = dwc2_dequeue,
 
-	.set_halt = s3c_udc_set_halt,
-	.fifo_status = s3c_fifo_status,
-	.fifo_flush = s3c_fifo_flush,
+	.set_halt = dwc2_udc_set_halt,
+	.fifo_status = dwc2_fifo_status,
+	.fifo_flush = dwc2_fifo_flush,
 };
 
 #define create_proc_files() do {} while (0)
@@ -144,24 +145,24 @@ static struct usb_ep_ops s3c_ep_ops = {
 /***********************************************************/
 
 void __iomem		*regs_otg;
-struct s3c_usbotg_reg *reg;
+struct dwc2_usbotg_reg *reg;
 
 bool dfu_usb_get_reset(void)
 {
 	return !!(readl(&reg->gintsts) & INT_RESET);
 }
 
-__weak void otg_phy_init(struct s3c_udc *dev) {}
-__weak void otg_phy_off(struct s3c_udc *dev) {}
+__weak void otg_phy_init(struct dwc2_udc *dev) {}
+__weak void otg_phy_off(struct dwc2_udc *dev) {}
 
 /***********************************************************/
 
-#include "s3c_udc_otg_xfer_dma.c"
+#include "dwc2_udc_otg_xfer_dma.c"
 
 /*
  *	udc_disable - disable USB device controller
  */
-static void udc_disable(struct s3c_udc *dev)
+static void udc_disable(struct dwc2_udc *dev)
 {
 	debug_cond(DEBUG_SETUP != 0, "%s: %p\n", __func__, dev);
 
@@ -177,7 +178,7 @@ static void udc_disable(struct s3c_udc *dev)
 /*
  *	udc_reinit - initialize software state
  */
-static void udc_reinit(struct s3c_udc *dev)
+static void udc_reinit(struct dwc2_udc *dev)
 {
 	unsigned int i;
 
@@ -189,8 +190,8 @@ static void udc_reinit(struct s3c_udc *dev)
 	dev->ep0state = WAIT_FOR_SETUP;
 
 	/* basic endpoint records init */
-	for (i = 0; i < S3C_MAX_ENDPOINTS; i++) {
-		struct s3c_ep *ep = &dev->ep[i];
+	for (i = 0; i < DWC2_MAX_ENDPOINTS; i++) {
+		struct dwc2_ep *ep = &dev->ep[i];
 
 		if (i != 0)
 			list_add_tail(&ep->ep.ep_list, &dev->gadget.ep_list);
@@ -210,7 +211,7 @@ static void udc_reinit(struct s3c_udc *dev)
 /* until it's enabled, this UDC should be completely invisible
  * to any USB host.
  */
-static int udc_enable(struct s3c_udc *dev)
+static int udc_enable(struct dwc2_udc *dev)
 {
 	debug_cond(DEBUG_SETUP != 0, "%s: %p\n", __func__, dev);
 
@@ -218,7 +219,7 @@ static int udc_enable(struct s3c_udc *dev)
 	reconfig_usbd(dev);
 
 	debug_cond(DEBUG_SETUP != 0,
-		   "S3C USB 2.0 OTG Controller Core Initialized : 0x%x\n",
+		   "DWC2 USB 2.0 OTG Controller Core Initialized : 0x%x\n",
 		    readl(&reg->gintmsk));
 
 	dev->gadget.speed = USB_SPEED_UNKNOWN;
@@ -231,7 +232,7 @@ static int udc_enable(struct s3c_udc *dev)
 */
 int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 {
-	struct s3c_udc *dev = the_controller;
+	struct dwc2_udc *dev = the_controller;
 	int retval = 0;
 	unsigned long flags = 0;
 
@@ -280,7 +281,7 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver)
  */
 int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
 {
-	struct s3c_udc *dev = the_controller;
+	struct dwc2_udc *dev = the_controller;
 	unsigned long flags = 0;
 
 	if (!dev)
@@ -304,7 +305,7 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
 /*
  *	done - retire a request; caller blocked irqs
  */
-static void done(struct s3c_ep *ep, struct s3c_request *req, int status)
+static void done(struct dwc2_ep *ep, struct dwc2_request *req, int status)
 {
 	unsigned int stopped = ep->stopped;
 
@@ -355,20 +356,20 @@ static void done(struct s3c_ep *ep, struct s3c_request *req, int status)
 /*
  *	nuke - dequeue ALL requests
  */
-static void nuke(struct s3c_ep *ep, int status)
+static void nuke(struct dwc2_ep *ep, int status)
 {
-	struct s3c_request *req;
+	struct dwc2_request *req;
 
 	debug("%s: %s %p\n", __func__, ep->ep.name, ep);
 
 	/* called with irqs blocked */
 	while (!list_empty(&ep->queue)) {
-		req = list_entry(ep->queue.next, struct s3c_request, queue);
+		req = list_entry(ep->queue.next, struct dwc2_request, queue);
 		done(ep, req, status);
 	}
 }
 
-static void stop_activity(struct s3c_udc *dev,
+static void stop_activity(struct dwc2_udc *dev,
 			  struct usb_gadget_driver *driver)
 {
 	int i;
@@ -379,8 +380,8 @@ static void stop_activity(struct s3c_udc *dev,
 	dev->gadget.speed = USB_SPEED_UNKNOWN;
 
 	/* prevent new request submissions, kill any outstanding requests  */
-	for (i = 0; i < S3C_MAX_ENDPOINTS; i++) {
-		struct s3c_ep *ep = &dev->ep[i];
+	for (i = 0; i < DWC2_MAX_ENDPOINTS; i++) {
+		struct dwc2_ep *ep = &dev->ep[i];
 		ep->stopped = 1;
 		nuke(ep, -ESHUTDOWN);
 	}
@@ -396,7 +397,7 @@ static void stop_activity(struct s3c_udc *dev,
 	udc_reinit(dev);
 }
 
-static void reconfig_usbd(struct s3c_udc *dev)
+static void reconfig_usbd(struct dwc2_udc *dev)
 {
 	/* 2. Soft-reset OTG Core and then unreset again. */
 	int i;
@@ -447,7 +448,7 @@ static void reconfig_usbd(struct s3c_udc *dev)
 	writel(DEPCTL_EPDIS|DEPCTL_SNAK, &reg->out_endp[EP0_CON].doepctl);
 	writel(DEPCTL_EPDIS|DEPCTL_SNAK, &reg->in_endp[EP0_CON].diepctl);
 
-	for (i = 1; i < S3C_MAX_ENDPOINTS; i++) {
+	for (i = 1; i < DWC2_MAX_ENDPOINTS; i++) {
 		writel(DEPCTL_EPDIS|DEPCTL_SNAK, &reg->out_endp[i].doepctl);
 		writel(DEPCTL_EPDIS|DEPCTL_SNAK, &reg->in_endp[i].diepctl);
 	}
@@ -469,7 +470,7 @@ static void reconfig_usbd(struct s3c_udc *dev)
 	writel((NPTX_FIFO_SIZE >> 2) << 16 | ((RX_FIFO_SIZE >> 2)) << 0,
 	       &reg->gnptxfsiz);
 
-	for (i = 1; i < S3C_MAX_HW_ENDPOINTS; i++)
+	for (i = 1; i < DWC2_MAX_HW_ENDPOINTS; i++)
 		writel((PTX_FIFO_SIZE >> 2) << 16 |
 		       ((RX_FIFO_SIZE + NPTX_FIFO_SIZE +
 			 PTX_FIFO_SIZE*(i-1)) >> 2) << 0,
@@ -478,13 +479,13 @@ static void reconfig_usbd(struct s3c_udc *dev)
 	/* Flush the RX FIFO */
 	writel(RX_FIFO_FLUSH, &reg->grstctl);
 	while (readl(&reg->grstctl) & RX_FIFO_FLUSH)
-		debug("%s: waiting for S3C_UDC_OTG_GRSTCTL\n", __func__);
+		debug("%s: waiting for DWC2_UDC_OTG_GRSTCTL\n", __func__);
 
 	/* Flush all the Tx FIFO's */
 	writel(TX_FIFO_FLUSH_ALL, &reg->grstctl);
 	writel(TX_FIFO_FLUSH_ALL | TX_FIFO_FLUSH, &reg->grstctl);
 	while (readl(&reg->grstctl) & TX_FIFO_FLUSH)
-		debug("%s: waiting for S3C_UDC_OTG_GRSTCTL\n", __func__);
+		debug("%s: waiting for DWC2_UDC_OTG_GRSTCTL\n", __func__);
 
 	/* 13. Clear NAK bit of EP0, EP1, EP2*/
 	/* For Slave mode*/
@@ -496,7 +497,7 @@ static void reconfig_usbd(struct s3c_udc *dev)
 	writel(GAHBCFG_INIT, &reg->gahbcfg);
 }
 
-static void set_max_pktsize(struct s3c_udc *dev, enum usb_device_speed speed)
+static void set_max_pktsize(struct dwc2_udc *dev, enum usb_device_speed speed)
 {
 	unsigned int ep_ctrl;
 	int i;
@@ -514,7 +515,7 @@ static void set_max_pktsize(struct s3c_udc *dev, enum usb_device_speed speed)
 	}
 
 	dev->ep[0].ep.maxpacket = ep0_fifo_size;
-	for (i = 1; i < S3C_MAX_ENDPOINTS; i++)
+	for (i = 1; i < DWC2_MAX_ENDPOINTS; i++)
 		dev->ep[i].ep.maxpacket = ep_fifo_size;
 
 	/* EP0 - Control IN (64 bytes)*/
@@ -526,16 +527,16 @@ static void set_max_pktsize(struct s3c_udc *dev, enum usb_device_speed speed)
 	writel(ep_ctrl|(0<<0), &reg->out_endp[EP0_CON].doepctl);
 }
 
-static int s3c_ep_enable(struct usb_ep *_ep,
+static int dwc2_ep_enable(struct usb_ep *_ep,
 			 const struct usb_endpoint_descriptor *desc)
 {
-	struct s3c_ep *ep;
-	struct s3c_udc *dev;
+	struct dwc2_ep *ep;
+	struct dwc2_udc *dev;
 	unsigned long flags = 0;
 
 	debug("%s: %p\n", __func__, _ep);
 
-	ep = container_of(_ep, struct s3c_ep, ep);
+	ep = container_of(_ep, struct dwc2_ep, ep);
 	if (!_ep || !desc || ep->desc || _ep->name == ep0name
 	    || desc->bDescriptorType != USB_DT_ENDPOINT
 	    || ep->bEndpointAddress != desc->bEndpointAddress
@@ -577,11 +578,11 @@ static int s3c_ep_enable(struct usb_ep *_ep,
 	ep->ep.maxpacket = le16_to_cpu(get_unaligned(&desc->wMaxPacketSize));
 
 	/* Reset halt state */
-	s3c_udc_set_nak(ep);
-	s3c_udc_set_halt(_ep, 0);
+	dwc2_udc_set_nak(ep);
+	dwc2_udc_set_halt(_ep, 0);
 
 	spin_lock_irqsave(&ep->dev->lock, flags);
-	s3c_udc_ep_activate(ep);
+	dwc2_udc_ep_activate(ep);
 	spin_unlock_irqrestore(&ep->dev->lock, flags);
 
 	debug("%s: enabled %s, stopped = %d, maxpacket = %d\n",
@@ -592,14 +593,14 @@ static int s3c_ep_enable(struct usb_ep *_ep,
 /*
  * Disable EP
  */
-static int s3c_ep_disable(struct usb_ep *_ep)
+static int dwc2_ep_disable(struct usb_ep *_ep)
 {
-	struct s3c_ep *ep;
+	struct dwc2_ep *ep;
 	unsigned long flags = 0;
 
 	debug("%s: %p\n", __func__, _ep);
 
-	ep = container_of(_ep, struct s3c_ep, ep);
+	ep = container_of(_ep, struct dwc2_ep, ep);
 	if (!_ep || !ep->desc) {
 		debug("%s: %s not enabled\n", __func__,
 		      _ep ? ep->ep.name : NULL);
@@ -620,10 +621,10 @@ static int s3c_ep_disable(struct usb_ep *_ep)
 	return 0;
 }
 
-static struct usb_request *s3c_alloc_request(struct usb_ep *ep,
+static struct usb_request *dwc2_alloc_request(struct usb_ep *ep,
 					     gfp_t gfp_flags)
 {
-	struct s3c_request *req;
+	struct dwc2_request *req;
 
 	debug("%s: %s %p\n", __func__, ep->name, ep);
 
@@ -637,27 +638,27 @@ static struct usb_request *s3c_alloc_request(struct usb_ep *ep,
 	return &req->req;
 }
 
-static void s3c_free_request(struct usb_ep *ep, struct usb_request *_req)
+static void dwc2_free_request(struct usb_ep *ep, struct usb_request *_req)
 {
-	struct s3c_request *req;
+	struct dwc2_request *req;
 
 	debug("%s: %p\n", __func__, ep);
 
-	req = container_of(_req, struct s3c_request, req);
+	req = container_of(_req, struct dwc2_request, req);
 	WARN_ON(!list_empty(&req->queue));
 	kfree(req);
 }
 
 /* dequeue JUST ONE request */
-static int s3c_dequeue(struct usb_ep *_ep, struct usb_request *_req)
+static int dwc2_dequeue(struct usb_ep *_ep, struct usb_request *_req)
 {
-	struct s3c_ep *ep;
-	struct s3c_request *req;
+	struct dwc2_ep *ep;
+	struct dwc2_request *req;
 	unsigned long flags = 0;
 
 	debug("%s: %p\n", __func__, _ep);
 
-	ep = container_of(_ep, struct s3c_ep, ep);
+	ep = container_of(_ep, struct dwc2_ep, ep);
 	if (!_ep || ep->ep.name == ep0name)
 		return -EINVAL;
 
@@ -682,12 +683,12 @@ static int s3c_dequeue(struct usb_ep *_ep, struct usb_request *_req)
 /*
  * Return bytes in EP FIFO
  */
-static int s3c_fifo_status(struct usb_ep *_ep)
+static int dwc2_fifo_status(struct usb_ep *_ep)
 {
 	int count = 0;
-	struct s3c_ep *ep;
+	struct dwc2_ep *ep;
 
-	ep = container_of(_ep, struct s3c_ep, ep);
+	ep = container_of(_ep, struct dwc2_ep, ep);
 	if (!_ep) {
 		debug("%s: bad ep\n", __func__);
 		return -ENODEV;
@@ -705,11 +706,11 @@ static int s3c_fifo_status(struct usb_ep *_ep)
 /*
  * Flush EP FIFO
  */
-static void s3c_fifo_flush(struct usb_ep *_ep)
+static void dwc2_fifo_flush(struct usb_ep *_ep)
 {
-	struct s3c_ep *ep;
+	struct dwc2_ep *ep;
 
-	ep = container_of(_ep, struct s3c_ep, ep);
+	ep = container_of(_ep, struct dwc2_ep, ep);
 	if (unlikely(!_ep || (!ep->desc && ep->ep.name != ep0name))) {
 		debug("%s: bad ep\n", __func__);
 		return;
@@ -718,14 +719,14 @@ static void s3c_fifo_flush(struct usb_ep *_ep)
 	debug("%s: %d\n", __func__, ep_index(ep));
 }
 
-static const struct usb_gadget_ops s3c_udc_ops = {
+static const struct usb_gadget_ops dwc2_udc_ops = {
 	/* current versions must always be self-powered */
 };
 
-static struct s3c_udc memory = {
+static struct dwc2_udc memory = {
 	.usb_address = 0,
 	.gadget = {
-		.ops = &s3c_udc_ops,
+		.ops = &dwc2_udc_ops,
 		.ep0 = &memory.ep[0].ep,
 		.name = driver_name,
 	},
@@ -734,7 +735,7 @@ static struct s3c_udc memory = {
 	.ep[0] = {
 		.ep = {
 			.name = ep0name,
-			.ops = &s3c_ep_ops,
+			.ops = &dwc2_ep_ops,
 			.maxpacket = EP0_FIFO_SIZE,
 		},
 		.dev = &memory,
@@ -749,7 +750,7 @@ static struct s3c_udc memory = {
 	.ep[1] = {
 		.ep = {
 			.name = "ep1in-bulk",
-			.ops = &s3c_ep_ops,
+			.ops = &dwc2_ep_ops,
 			.maxpacket = EP_FIFO_SIZE,
 		},
 		.dev = &memory,
@@ -764,7 +765,7 @@ static struct s3c_udc memory = {
 	.ep[2] = {
 		.ep = {
 			.name = "ep2out-bulk",
-			.ops = &s3c_ep_ops,
+			.ops = &dwc2_ep_ops,
 			.maxpacket = EP_FIFO_SIZE,
 		},
 		.dev = &memory,
@@ -779,7 +780,7 @@ static struct s3c_udc memory = {
 	.ep[3] = {
 		.ep = {
 			.name = "ep3in-int",
-			.ops = &s3c_ep_ops,
+			.ops = &dwc2_ep_ops,
 			.maxpacket = EP_FIFO_SIZE,
 		},
 		.dev = &memory,
@@ -796,16 +797,16 @@ static struct s3c_udc memory = {
  *	probe - binds to the platform device
  */
 
-int s3c_udc_probe(struct s3c_plat_otg_data *pdata)
+int dwc2_udc_probe(struct dwc2_plat_otg_data *pdata)
 {
-	struct s3c_udc *dev = &memory;
+	struct dwc2_udc *dev = &memory;
 	int retval = 0;
 
 	debug("%s: %p\n", __func__, pdata);
 
 	dev->pdata = pdata;
 
-	reg = (struct s3c_usbotg_reg *)pdata->regs_otg;
+	reg = (struct dwc2_usbotg_reg *)pdata->regs_otg;
 
 	/* regs_otg = (void *)pdata->regs_otg; */
 
@@ -839,6 +840,6 @@ int usb_gadget_handle_interrupts(int index)
 	u32 gintmsk = readl(&reg->gintmsk);
 
 	if (intr_status & gintmsk)
-		return s3c_udc_irq(1, (void *)the_controller);
+		return dwc2_udc_irq(1, (void *)the_controller);
 	return 0;
 }
diff --git a/drivers/usb/gadget/s3c_udc_otg_phy.c b/drivers/usb/gadget/dwc2_udc_otg_phy.c
index f13cb8910a..e0cbbc0757 100644
--- a/drivers/usb/gadget/s3c_udc_otg_phy.c
+++ b/drivers/usb/gadget/dwc2_udc_otg_phy.c
@@ -1,6 +1,6 @@
 /*
- * drivers/usb/gadget/s3c_udc_otg.c
- * Samsung S3C on-chip full/high speed USB OTG 2.0 device controllers
+ * drivers/usb/gadget/dwc2_udc_otg.c
+ * Designware DWC2 on-chip full/high speed USB OTG 2.0 device controllers
  *
  * Copyright (C) 2008 for Samsung Electronics
  *
@@ -32,16 +32,17 @@
 
 #include <asm/mach-types.h>
 
-#include "regs-otg.h"
+#include "dwc2_udc_otg_regs.h"
+#include "dwc2_udc_otg_priv.h"
 #include <usb/lin_gadget_compat.h>
 
-#include <usb/s3c_udc.h>
+#include <usb/dwc2_udc.h>
 
-void otg_phy_init(struct s3c_udc *dev)
+void otg_phy_init(struct dwc2_udc *dev)
 {
 	unsigned int usb_phy_ctrl = dev->pdata->usb_phy_ctrl;
-	struct s3c_usbotg_phy *phy =
-		(struct s3c_usbotg_phy *)dev->pdata->regs_phy;
+	struct dwc2_usbotg_phy *phy =
+		(struct dwc2_usbotg_phy *)dev->pdata->regs_phy;
 
 	dev->pdata->phy_control(1);
 
@@ -75,11 +76,11 @@ void otg_phy_init(struct s3c_udc *dev)
 	udelay(10);
 }
 
-void otg_phy_off(struct s3c_udc *dev)
+void otg_phy_off(struct dwc2_udc *dev)
 {
 	unsigned int usb_phy_ctrl = dev->pdata->usb_phy_ctrl;
-	struct s3c_usbotg_phy *phy =
-		(struct s3c_usbotg_phy *)dev->pdata->regs_phy;
+	struct dwc2_usbotg_phy *phy =
+		(struct dwc2_usbotg_phy *)dev->pdata->regs_phy;
 
 	/* reset controller just in case */
 	writel(PHY_SW_RST0, &phy->rstcon);
diff --git a/drivers/usb/gadget/dwc2_udc_otg_priv.h b/drivers/usb/gadget/dwc2_udc_otg_priv.h
new file mode 100644
index 0000000000..b2c1fc4105
--- /dev/null
+++ b/drivers/usb/gadget/dwc2_udc_otg_priv.h
@@ -0,0 +1,98 @@
+/*
+ * Designware DWC2 on-chip full/high speed USB device controllers
+ * Copyright (C) 2005 for Samsung Electronics
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __DWC2_UDC_OTG_PRIV__
+#define __DWC2_UDC_OTG_PRIV__
+
+#include <asm/errno.h>
+#include <linux/sizes.h>
+#include <linux/usb/ch9.h>
+#include <linux/usb/gadget.h>
+#include <linux/list.h>
+#include <usb/lin_gadget_compat.h>
+#include <usb/dwc2_udc.h>
+
+/*-------------------------------------------------------------------------*/
+/* DMA bounce buffer size, 16K is enough even for mass storage */
+#define DMA_BUFFER_SIZE	(16*SZ_1K)
+
+#define EP0_FIFO_SIZE		64
+#define EP_FIFO_SIZE		512
+#define EP_FIFO_SIZE2		1024
+/* ep0-control, ep1in-bulk, ep2out-bulk, ep3in-int */
+#define DWC2_MAX_ENDPOINTS	4
+#define DWC2_MAX_HW_ENDPOINTS	16
+
+#define WAIT_FOR_SETUP          0
+#define DATA_STATE_XMIT         1
+#define DATA_STATE_NEED_ZLP     2
+#define WAIT_FOR_OUT_STATUS     3
+#define DATA_STATE_RECV         4
+#define WAIT_FOR_COMPLETE	5
+#define WAIT_FOR_OUT_COMPLETE	6
+#define WAIT_FOR_IN_COMPLETE	7
+#define WAIT_FOR_NULL_COMPLETE	8
+
+#define TEST_J_SEL		0x1
+#define TEST_K_SEL		0x2
+#define TEST_SE0_NAK_SEL	0x3
+#define TEST_PACKET_SEL		0x4
+#define TEST_FORCE_ENABLE_SEL	0x5
+
+/* ************************************************************************* */
+/* IO
+ */
+
+enum ep_type {
+	ep_control, ep_bulk_in, ep_bulk_out, ep_interrupt
+};
+
+struct dwc2_ep {
+	struct usb_ep ep;
+	struct dwc2_udc *dev;
+
+	const struct usb_endpoint_descriptor *desc;
+	struct list_head queue;
+	unsigned long pio_irqs;
+	int len;
+	void *dma_buf;
+
+	u8 stopped;
+	u8 bEndpointAddress;
+	u8 bmAttributes;
+
+	enum ep_type ep_type;
+	int fifo_num;
+};
+
+struct dwc2_request {
+	struct usb_request req;
+	struct list_head queue;
+};
+
+struct dwc2_udc {
+	struct usb_gadget gadget;
+	struct usb_gadget_driver *driver;
+
+	struct dwc2_plat_otg_data *pdata;
+
+	int ep0state;
+	struct dwc2_ep ep[DWC2_MAX_ENDPOINTS];
+
+	unsigned char usb_address;
+
+	unsigned req_pending:1, req_std:1;
+};
+
+#define ep_is_in(EP) (((EP)->bEndpointAddress&USB_DIR_IN) == USB_DIR_IN)
+#define ep_index(EP) ((EP)->bEndpointAddress&0xF)
+#define ep_maxpacket(EP) ((EP)->ep.maxpacket)
+
+void otg_phy_init(struct dwc2_udc *dev);
+void otg_phy_off(struct dwc2_udc *dev);
+
+#endif	/* __DWC2_UDC_OTG_PRIV__ */
diff --git a/drivers/usb/gadget/regs-otg.h b/drivers/usb/gadget/dwc2_udc_otg_regs.h
index ac5d11213d..78ec90ea9f 100644
--- a/drivers/usb/gadget/regs-otg.h
+++ b/drivers/usb/gadget/dwc2_udc_otg_regs.h
@@ -12,14 +12,14 @@
 #define __ASM_ARCH_REGS_USB_OTG_HS_H
 
 /* USB2.0 OTG Controller register */
-struct s3c_usbotg_phy {
+struct dwc2_usbotg_phy {
 	u32 phypwr;
 	u32 phyclk;
 	u32 rstcon;
 };
 
 /* Device Logical IN Endpoint-Specific Registers */
-struct s3c_dev_in_endp {
+struct dwc2_dev_in_endp {
 	u32 diepctl;
 	u8  res1[4];
 	u32 diepint;
@@ -31,7 +31,7 @@ struct s3c_dev_in_endp {
 };
 
 /* Device Logical OUT Endpoint-Specific Registers */
-struct s3c_dev_out_endp {
+struct dwc2_dev_out_endp {
 	u32 doepctl;
 	u8  res1[4];
 	u32 doepint;
@@ -48,7 +48,7 @@ struct ep_fifo {
 };
 
 /* USB2.0 OTG Controller register */
-struct s3c_usbotg_reg {
+struct dwc2_usbotg_reg {
 	/* Core Global Registers */
 	u32 gotgctl; /* OTG Control & Status */
 	u32 gotgint; /* OTG Interrupt */
@@ -74,8 +74,8 @@ struct s3c_usbotg_reg {
 	u32 daint; /* Device All Endpoints Interrupt */
 	u32 daintmsk; /* Device All Endpoints Interrupt Mask */
 	u8  res4[224];
-	struct s3c_dev_in_endp in_endp[16];
-	struct s3c_dev_out_endp out_endp[16];
+	struct dwc2_dev_in_endp in_endp[16];
+	struct dwc2_dev_out_endp out_endp[16];
 	u8  res5[768];
 	struct ep_fifo ep[16];
 };
@@ -83,11 +83,11 @@ struct s3c_usbotg_reg {
 /*===================================================================== */
 /*definitions related to CSR setting */
 
-/* S3C_UDC_OTG_GOTGCTL */
+/* DWC2_UDC_OTG_GOTGCTL */
 #define B_SESSION_VALID		(0x1<<19)
 #define A_SESSION_VALID		(0x1<<18)
 
-/* S3C_UDC_OTG_GAHBCFG */
+/* DWC2_UDC_OTG_GAHBCFG */
 #define PTXFE_HALF			(0<<8)
 #define PTXFE_ZERO			(1<<8)
 #define NPTXFE_HALF			(0<<7)
@@ -102,11 +102,11 @@ struct s3c_usbotg_reg {
 #define GBL_INT_UNMASK			(1<<0)
 #define GBL_INT_MASK			(0<<0)
 
-/* S3C_UDC_OTG_GRSTCTL */
+/* DWC2_UDC_OTG_GRSTCTL */
 #define AHB_MASTER_IDLE		(1u<<31)
 #define CORE_SOFT_RESET		(0x1<<0)
 
-/* S3C_UDC_OTG_GINTSTS/S3C_UDC_OTG_GINTMSK core interrupt register */
+/* DWC2_UDC_OTG_GINTSTS/DWC2_UDC_OTG_GINTMSK core interrupt register */
 #define INT_RESUME			(1u<<31)
 #define INT_DISCONN			(0x1<<29)
 #define INT_CONN_ID_STS_CNG		(0x1<<28)
@@ -146,22 +146,22 @@ struct s3c_usbotg_reg {
 #define USB_LOW_6MHZ			(0x2<<1)
 #define USB_FULL_48MHZ			(0x3<<1)
 
-/* S3C_UDC_OTG_GRXSTSP STATUS */
+/* DWC2_UDC_OTG_GRXSTSP STATUS */
 #define OUT_PKT_RECEIVED		(0x2<<17)
 #define OUT_TRANSFER_COMPLELTED	(0x3<<17)
 #define SETUP_TRANSACTION_COMPLETED	(0x4<<17)
 #define SETUP_PKT_RECEIVED		(0x6<<17)
 #define GLOBAL_OUT_NAK			(0x1<<17)
 
-/* S3C_UDC_OTG_DCTL device control register */
+/* DWC2_UDC_OTG_DCTL device control register */
 #define NORMAL_OPERATION		(0x1<<0)
 #define SOFT_DISCONNECT		(0x1<<1)
 
-/* S3C_UDC_OTG_DAINT device all endpoint interrupt register */
+/* DWC2_UDC_OTG_DAINT device all endpoint interrupt register */
 #define DAINT_OUT_BIT			(16)
 #define DAINT_MASK			(0xFFFF)
 
-/* S3C_UDC_OTG_DIEPCTL0/DOEPCTL0 device
+/* DWC2_UDC_OTG_DIEPCTL0/DOEPCTL0 device
    control IN/OUT endpoint 0 control register */
 #define DEPCTL_EPENA			(0x1<<31)
 #define DEPCTL_EPDIS			(0x1<<30)
@@ -191,9 +191,9 @@ struct s3c_usbotg_reg {
 #define DIEPCTL0_NEXT_EP_BIT		(11)
 
 
-/* S3C_UDC_OTG_DIEPMSK/DOEPMSK device IN/OUT endpoint
+/* DWC2_UDC_OTG_DIEPMSK/DOEPMSK device IN/OUT endpoint
    common interrupt mask register */
-/* S3C_UDC_OTG_DIEPINTn/DOEPINTn device IN/OUT endpoint interrupt register */
+/* DWC2_UDC_OTG_DIEPINTn/DOEPINTn device IN/OUT endpoint interrupt register */
 #define BACK2BACK_SETUP_RECEIVED	(0x1<<6)
 #define INTKNEPMIS			(0x1<<5)
 #define INTKN_TXFEMP			(0x1<<4)
diff --git a/drivers/usb/gadget/s3c_udc_otg_xfer_dma.c b/drivers/usb/gadget/dwc2_udc_otg_xfer_dma.c
index 7e7a2c2d90..bce9c30ef6 100644
--- a/drivers/usb/gadget/s3c_udc_otg_xfer_dma.c
+++ b/drivers/usb/gadget/dwc2_udc_otg_xfer_dma.c
@@ -1,6 +1,6 @@
 /*
- * drivers/usb/gadget/s3c_udc_otg_xfer_dma.c
- * Samsung S3C on-chip full/high speed USB OTG 2.0 device controllers
+ * drivers/usb/gadget/dwc2_udc_otg_xfer_dma.c
+ * Designware DWC2 on-chip full/high speed USB OTG 2.0 device controllers
  *
  * Copyright (C) 2009 for Samsung Electronics
  *
@@ -25,7 +25,7 @@ int clear_feature_flag;
 #define GET_MAX_LUN_REQUEST	0xFE
 #define BOT_RESET_REQUEST	0xFF
 
-static inline void s3c_udc_ep0_zlp(struct s3c_udc *dev)
+static inline void dwc2_udc_ep0_zlp(struct dwc2_udc *dev)
 {
 	u32 ep_ctrl;
 
@@ -41,7 +41,7 @@ static inline void s3c_udc_ep0_zlp(struct s3c_udc *dev)
 	dev->ep0state = WAIT_FOR_IN_COMPLETE;
 }
 
-void s3c_udc_pre_setup(void)
+static void dwc2_udc_pre_setup(void)
 {
 	u32 ep_ctrl;
 
@@ -62,7 +62,7 @@ void s3c_udc_pre_setup(void)
 
 }
 
-static inline void s3c_ep0_complete_out(void)
+static inline void dwc2_ep0_complete_out(void)
 {
 	u32 ep_ctrl;
 
@@ -90,7 +90,7 @@ static inline void s3c_ep0_complete_out(void)
 }
 
 
-static int setdma_rx(struct s3c_ep *ep, struct s3c_request *req)
+static int setdma_rx(struct dwc2_ep *ep, struct dwc2_request *req)
 {
 	u32 *buf, ctrl;
 	u32 length, pktcnt;
@@ -128,7 +128,7 @@ static int setdma_rx(struct s3c_ep *ep, struct s3c_request *req)
 
 }
 
-int setdma_tx(struct s3c_ep *ep, struct s3c_request *req)
+static int setdma_tx(struct dwc2_ep *ep, struct dwc2_request *req)
 {
 	u32 *buf, ctrl = 0;
 	u32 length, pktcnt;
@@ -186,10 +186,10 @@ int setdma_tx(struct s3c_ep *ep, struct s3c_request *req)
 	return length;
 }
 
-static void complete_rx(struct s3c_udc *dev, u8 ep_num)
+static void complete_rx(struct dwc2_udc *dev, u8 ep_num)
 {
-	struct s3c_ep *ep = &dev->ep[ep_num];
-	struct s3c_request *req = NULL;
+	struct dwc2_ep *ep = &dev->ep[ep_num];
+	struct dwc2_request *req = NULL;
 	u32 ep_tsr = 0, xfer_size = 0, is_short = 0;
 
 	if (list_empty(&ep->queue)) {
@@ -200,7 +200,7 @@ static void complete_rx(struct s3c_udc *dev, u8 ep_num)
 
 	}
 
-	req = list_entry(ep->queue.next, struct s3c_request, queue);
+	req = list_entry(ep->queue.next, struct dwc2_request, queue);
 	ep_tsr = readl(&reg->out_endp[ep_num].doeptsiz);
 
 	if (ep_num == EP0_CON)
@@ -240,7 +240,7 @@ static void complete_rx(struct s3c_udc *dev, u8 ep_num)
 	if (is_short || req->req.actual == req->req.length) {
 		if (ep_num == EP0_CON && dev->ep0state == DATA_STATE_RECV) {
 			debug_cond(DEBUG_OUT_EP != 0, "	=> Send ZLP\n");
-			s3c_udc_ep0_zlp(dev);
+			dwc2_udc_ep0_zlp(dev);
 			/* packet will be completed in complete_tx() */
 			dev->ep0state = WAIT_FOR_IN_COMPLETE;
 		} else {
@@ -248,7 +248,7 @@ static void complete_rx(struct s3c_udc *dev, u8 ep_num)
 
 			if (!list_empty(&ep->queue)) {
 				req = list_entry(ep->queue.next,
-					struct s3c_request, queue);
+					struct dwc2_request, queue);
 				debug_cond(DEBUG_OUT_EP != 0,
 					   "%s: Next Rx request start...\n",
 					   __func__);
@@ -259,16 +259,16 @@ static void complete_rx(struct s3c_udc *dev, u8 ep_num)
 		setdma_rx(ep, req);
 }
 
-static void complete_tx(struct s3c_udc *dev, u8 ep_num)
+static void complete_tx(struct dwc2_udc *dev, u8 ep_num)
 {
-	struct s3c_ep *ep = &dev->ep[ep_num];
-	struct s3c_request *req;
+	struct dwc2_ep *ep = &dev->ep[ep_num];
+	struct dwc2_request *req;
 	u32 ep_tsr = 0, xfer_size = 0, is_short = 0;
 	u32 last;
 
 	if (dev->ep0state == WAIT_FOR_NULL_COMPLETE) {
 		dev->ep0state = WAIT_FOR_OUT_COMPLETE;
-		s3c_ep0_complete_out();
+		dwc2_ep0_complete_out();
 		return;
 	}
 
@@ -280,7 +280,7 @@ static void complete_tx(struct s3c_udc *dev, u8 ep_num)
 
 	}
 
-	req = list_entry(ep->queue.next, struct s3c_request, queue);
+	req = list_entry(ep->queue.next, struct dwc2_request, queue);
 
 	ep_tsr = readl(&reg->in_endp[ep_num].dieptsiz);
 
@@ -315,7 +315,7 @@ static void complete_tx(struct s3c_udc *dev, u8 ep_num)
 				__func__, ep_num);
 			done(ep, req, 0);
 			dev->ep0state = WAIT_FOR_OUT_COMPLETE;
-			s3c_ep0_complete_out();
+			dwc2_ep0_complete_out();
 		} else {
 			debug_cond(DEBUG_IN_EP,
 				"%s: ep_num = %d, invalid ep state\n",
@@ -328,23 +328,23 @@ static void complete_tx(struct s3c_udc *dev, u8 ep_num)
 		done(ep, req, 0);
 
 	if (!list_empty(&ep->queue)) {
-		req = list_entry(ep->queue.next, struct s3c_request, queue);
+		req = list_entry(ep->queue.next, struct dwc2_request, queue);
 		debug_cond(DEBUG_IN_EP,
 			"%s: Next Tx request start...\n", __func__);
 		setdma_tx(ep, req);
 	}
 }
 
-static inline void s3c_udc_check_tx_queue(struct s3c_udc *dev, u8 ep_num)
+static inline void dwc2_udc_check_tx_queue(struct dwc2_udc *dev, u8 ep_num)
 {
-	struct s3c_ep *ep = &dev->ep[ep_num];
-	struct s3c_request *req;
+	struct dwc2_ep *ep = &dev->ep[ep_num];
+	struct dwc2_request *req;
 
 	debug_cond(DEBUG_IN_EP,
 		"%s: Check queue, ep_num = %d\n", __func__, ep_num);
 
 	if (!list_empty(&ep->queue)) {
-		req = list_entry(ep->queue.next, struct s3c_request, queue);
+		req = list_entry(ep->queue.next, struct dwc2_request, queue);
 		debug_cond(DEBUG_IN_EP,
 			"%s: Next Tx request(0x%p) start...\n",
 			__func__, req);
@@ -362,7 +362,7 @@ static inline void s3c_udc_check_tx_queue(struct s3c_udc *dev, u8 ep_num)
 
 }
 
-static void process_ep_in_intr(struct s3c_udc *dev)
+static void process_ep_in_intr(struct dwc2_udc *dev)
 {
 	u32 ep_intr, ep_intr_status;
 	u8 ep_num = 0;
@@ -392,12 +392,12 @@ static void process_ep_in_intr(struct s3c_udc *dev)
 						dev->ep0state = WAIT_FOR_SETUP;
 
 					if (dev->ep0state == WAIT_FOR_SETUP)
-						s3c_udc_pre_setup();
+						dwc2_udc_pre_setup();
 
 					/* continue transfer after
 					   set_clear_halt for DMA mode */
 					if (clear_feature_flag == 1) {
-						s3c_udc_check_tx_queue(dev,
+						dwc2_udc_check_tx_queue(dev,
 							clear_feature_num);
 						clear_feature_flag = 0;
 					}
@@ -409,7 +409,7 @@ static void process_ep_in_intr(struct s3c_udc *dev)
 	}
 }
 
-static void process_ep_out_intr(struct s3c_udc *dev)
+static void process_ep_out_intr(struct dwc2_udc *dev)
 {
 	u32 ep_intr, ep_intr_status;
 	u8 ep_num = 0;
@@ -438,7 +438,7 @@ static void process_ep_out_intr(struct s3c_udc *dev)
 						complete_rx(dev, ep_num);
 					else {
 						dev->ep0state = WAIT_FOR_SETUP;
-						s3c_udc_pre_setup();
+						dwc2_udc_pre_setup();
 					}
 				}
 
@@ -446,7 +446,7 @@ static void process_ep_out_intr(struct s3c_udc *dev)
 				    CTRL_OUT_EP_SETUP_PHASE_DONE) {
 					debug_cond(DEBUG_OUT_EP != 0,
 						   "SETUP packet arrived\n");
-					s3c_handle_ep0(dev);
+					dwc2_handle_ep0(dev);
 				}
 			} else {
 				if (ep_intr_status & TRANSFER_DONE)
@@ -461,9 +461,9 @@ static void process_ep_out_intr(struct s3c_udc *dev)
 /*
  *	usb client interrupt handler.
  */
-static int s3c_udc_irq(int irq, void *_dev)
+static int dwc2_udc_irq(int irq, void *_dev)
 {
-	struct s3c_udc *dev = _dev;
+	struct dwc2_udc *dev = _dev;
 	u32 intr_status;
 	u32 usb_status, gintmsk;
 	unsigned long flags = 0;
@@ -554,7 +554,7 @@ static int s3c_udc_irq(int irq, void *_dev)
 				reconfig_usbd(dev);
 				dev->ep0state = WAIT_FOR_SETUP;
 				reset_available = 0;
-				s3c_udc_pre_setup();
+				dwc2_udc_pre_setup();
 			} else
 				reset_available = 1;
 
@@ -579,16 +579,16 @@ static int s3c_udc_irq(int irq, void *_dev)
 /** Queue one request
  *  Kickstart transfer if needed
  */
-static int s3c_queue(struct usb_ep *_ep, struct usb_request *_req,
+static int dwc2_queue(struct usb_ep *_ep, struct usb_request *_req,
 			 gfp_t gfp_flags)
 {
-	struct s3c_request *req;
-	struct s3c_ep *ep;
-	struct s3c_udc *dev;
+	struct dwc2_request *req;
+	struct dwc2_ep *ep;
+	struct dwc2_udc *dev;
 	unsigned long flags = 0;
 	u32 ep_num, gintsts;
 
-	req = container_of(_req, struct s3c_request, req);
+	req = container_of(_req, struct dwc2_request, req);
 	if (unlikely(!_req || !_req->complete || !_req->buf
 		     || !list_empty(&req->queue))) {
 
@@ -596,7 +596,7 @@ static int s3c_queue(struct usb_ep *_ep, struct usb_request *_req,
 		return -EINVAL;
 	}
 
-	ep = container_of(_ep, struct s3c_ep, ep);
+	ep = container_of(_ep, struct dwc2_ep, ep);
 
 	if (unlikely(!_ep || (!ep->desc && ep->ep.name != ep0name))) {
 
@@ -646,20 +646,20 @@ static int s3c_queue(struct usb_ep *_ep, struct usb_request *_req,
 		if (ep_num == 0) {
 			/* EP0 */
 			list_add_tail(&req->queue, &ep->queue);
-			s3c_ep0_kick(dev, ep);
+			dwc2_ep0_kick(dev, ep);
 			req = 0;
 
 		} else if (ep_is_in(ep)) {
 			gintsts = readl(&reg->gintsts);
 			debug_cond(DEBUG_IN_EP,
-				   "%s: ep_is_in, S3C_UDC_OTG_GINTSTS=0x%x\n",
+				   "%s: ep_is_in, DWC2_UDC_OTG_GINTSTS=0x%x\n",
 				   __func__, gintsts);
 
 			setdma_tx(ep, req);
 		} else {
 			gintsts = readl(&reg->gintsts);
 			debug_cond(DEBUG_OUT_EP != 0,
-				   "%s:ep_is_out, S3C_UDC_OTG_GINTSTS=0x%x\n",
+				   "%s:ep_is_out, DWC2_UDC_OTG_GINTSTS=0x%x\n",
 				   __func__, gintsts);
 
 			setdma_rx(ep, req);
@@ -680,7 +680,7 @@ static int s3c_queue(struct usb_ep *_ep, struct usb_request *_req,
 /****************************************************************/
 
 /* return:  0 = still running, 1 = completed, negative = errno */
-static int write_fifo_ep0(struct s3c_ep *ep, struct s3c_request *req)
+static int write_fifo_ep0(struct dwc2_ep *ep, struct dwc2_request *req)
 {
 	u32 max;
 	unsigned count;
@@ -718,7 +718,7 @@ static int write_fifo_ep0(struct s3c_ep *ep, struct s3c_request *req)
 	return 0;
 }
 
-int s3c_fifo_read(struct s3c_ep *ep, u32 *cp, int max)
+static int dwc2_fifo_read(struct dwc2_ep *ep, u32 *cp, int max)
 {
 	invalidate_dcache_range((unsigned long)cp, (unsigned long)cp +
 				ROUND(max, CONFIG_SYS_CACHELINE_SIZE));
@@ -737,12 +737,12 @@ int s3c_fifo_read(struct s3c_ep *ep, u32 *cp, int max)
  * Called from control endpoint function
  * after it decodes a set address setup packet.
  */
-static void udc_set_address(struct s3c_udc *dev, unsigned char address)
+static void udc_set_address(struct dwc2_udc *dev, unsigned char address)
 {
 	u32 ctrl = readl(&reg->dcfg);
 	writel(DEVICE_ADDRESS(address) | ctrl, &reg->dcfg);
 
-	s3c_udc_ep0_zlp(dev);
+	dwc2_udc_ep0_zlp(dev);
 
 	debug_cond(DEBUG_EP0 != 0,
 		   "%s: USB OTG 2.0 Device address=%d, DCFG=0x%x\n",
@@ -751,9 +751,9 @@ static void udc_set_address(struct s3c_udc *dev, unsigned char address)
 	dev->usb_address = address;
 }
 
-static inline void s3c_udc_ep0_set_stall(struct s3c_ep *ep)
+static inline void dwc2_udc_ep0_set_stall(struct dwc2_ep *ep)
 {
-	struct s3c_udc *dev;
+	struct dwc2_udc *dev;
 	u32		ep_ctrl = 0;
 
 	dev = ep->dev;
@@ -776,16 +776,16 @@ static inline void s3c_udc_ep0_set_stall(struct s3c_ep *ep)
 	 */
 	dev->ep0state = WAIT_FOR_SETUP;
 
-	s3c_udc_pre_setup();
+	dwc2_udc_pre_setup();
 }
 
-static void s3c_ep0_read(struct s3c_udc *dev)
+static void dwc2_ep0_read(struct dwc2_udc *dev)
 {
-	struct s3c_request *req;
-	struct s3c_ep *ep = &dev->ep[0];
+	struct dwc2_request *req;
+	struct dwc2_ep *ep = &dev->ep[0];
 
 	if (!list_empty(&ep->queue)) {
-		req = list_entry(ep->queue.next, struct s3c_request, queue);
+		req = list_entry(ep->queue.next, struct dwc2_request, queue);
 
 	} else {
 		debug("%s: ---> BUG\n", __func__);
@@ -802,7 +802,7 @@ static void s3c_ep0_read(struct s3c_udc *dev)
 		 * or Bulk-Only mass storge reset */
 
 		ep->len = 0;
-		s3c_udc_ep0_zlp(dev);
+		dwc2_udc_ep0_zlp(dev);
 
 		debug_cond(DEBUG_EP0 != 0,
 			   "%s: req.length = 0, bRequest = %d\n",
@@ -816,16 +816,16 @@ static void s3c_ep0_read(struct s3c_udc *dev)
 /*
  * DATA_STATE_XMIT
  */
-static int s3c_ep0_write(struct s3c_udc *dev)
+static int dwc2_ep0_write(struct dwc2_udc *dev)
 {
-	struct s3c_request *req;
-	struct s3c_ep *ep = &dev->ep[0];
+	struct dwc2_request *req;
+	struct dwc2_ep *ep = &dev->ep[0];
 	int ret, need_zlp = 0;
 
 	if (list_empty(&ep->queue))
 		req = 0;
 	else
-		req = list_entry(ep->queue.next, struct s3c_request, queue);
+		req = list_entry(ep->queue.next, struct dwc2_request, queue);
 
 	if (!req) {
 		debug_cond(DEBUG_EP0 != 0, "%s: NULL REQ\n", __func__);
@@ -859,7 +859,7 @@ static int s3c_ep0_write(struct s3c_udc *dev)
 	return 1;
 }
 
-int s3c_udc_get_status(struct s3c_udc *dev,
+static int dwc2_udc_get_status(struct dwc2_udc *dev,
 		struct usb_ctrlrequest *crq)
 {
 	u8 ep_num = crq->wIndex & 0x7F;
@@ -920,7 +920,7 @@ int s3c_udc_get_status(struct s3c_udc *dev,
 	return 0;
 }
 
-static void s3c_udc_set_nak(struct s3c_ep *ep)
+static void dwc2_udc_set_nak(struct dwc2_ep *ep)
 {
 	u8		ep_num;
 	u32		ep_ctrl = 0;
@@ -946,7 +946,7 @@ static void s3c_udc_set_nak(struct s3c_ep *ep)
 }
 
 
-void s3c_udc_ep_set_stall(struct s3c_ep *ep)
+static void dwc2_udc_ep_set_stall(struct dwc2_ep *ep)
 {
 	u8		ep_num;
 	u32		ep_ctrl = 0;
@@ -981,7 +981,7 @@ void s3c_udc_ep_set_stall(struct s3c_ep *ep)
 	return;
 }
 
-void s3c_udc_ep_clear_stall(struct s3c_ep *ep)
+static void dwc2_udc_ep_clear_stall(struct dwc2_ep *ep)
 {
 	u8		ep_num;
 	u32		ep_ctrl = 0;
@@ -1029,14 +1029,14 @@ void s3c_udc_ep_clear_stall(struct s3c_ep *ep)
 	return;
 }
 
-static int s3c_udc_set_halt(struct usb_ep *_ep, int value)
+static int dwc2_udc_set_halt(struct usb_ep *_ep, int value)
 {
-	struct s3c_ep	*ep;
-	struct s3c_udc	*dev;
+	struct dwc2_ep	*ep;
+	struct dwc2_udc	*dev;
 	unsigned long	flags = 0;
 	u8		ep_num;
 
-	ep = container_of(_ep, struct s3c_ep, ep);
+	ep = container_of(_ep, struct dwc2_ep, ep);
 	ep_num = ep_index(ep);
 
 	if (unlikely(!_ep || !ep->desc || ep_num == EP0_CON ||
@@ -1050,7 +1050,7 @@ static int s3c_udc_set_halt(struct usb_ep *_ep, int value)
 	if (value && ep_is_in(ep) && !list_empty(&ep->queue)) {
 		debug("%s: %s queue not empty, req = %p\n",
 			__func__, ep->ep.name,
-			list_entry(ep->queue.next, struct s3c_request, queue));
+			list_entry(ep->queue.next, struct dwc2_request, queue));
 
 		return -EAGAIN;
 	}
@@ -1062,13 +1062,13 @@ static int s3c_udc_set_halt(struct usb_ep *_ep, int value)
 
 	if (value == 0) {
 		ep->stopped = 0;
-		s3c_udc_ep_clear_stall(ep);
+		dwc2_udc_ep_clear_stall(ep);
 	} else {
 		if (ep_num == 0)
 			dev->ep0state = WAIT_FOR_SETUP;
 
 		ep->stopped = 1;
-		s3c_udc_ep_set_stall(ep);
+		dwc2_udc_ep_set_stall(ep);
 	}
 
 	spin_unlock_irqrestore(&dev->lock, flags);
@@ -1076,7 +1076,7 @@ static int s3c_udc_set_halt(struct usb_ep *_ep, int value)
 	return 0;
 }
 
-void s3c_udc_ep_activate(struct s3c_ep *ep)
+static void dwc2_udc_ep_activate(struct dwc2_ep *ep)
 {
 	u8 ep_num;
 	u32 ep_ctrl = 0, daintmsk = 0;
@@ -1123,13 +1123,13 @@ void s3c_udc_ep_activate(struct s3c_ep *ep)
 
 }
 
-static int s3c_udc_clear_feature(struct usb_ep *_ep)
+static int dwc2_udc_clear_feature(struct usb_ep *_ep)
 {
-	struct s3c_udc	*dev;
-	struct s3c_ep	*ep;
+	struct dwc2_udc	*dev;
+	struct dwc2_ep	*ep;
 	u8		ep_num;
 
-	ep = container_of(_ep, struct s3c_ep, ep);
+	ep = container_of(_ep, struct dwc2_ep, ep);
 	ep_num = ep_index(ep);
 
 	dev = ep->dev;
@@ -1158,7 +1158,7 @@ static int s3c_udc_clear_feature(struct usb_ep *_ep)
 			break;
 		}
 
-		s3c_udc_ep0_zlp(dev);
+		dwc2_udc_ep0_zlp(dev);
 		break;
 
 	case USB_RECIP_ENDPOINT:
@@ -1168,14 +1168,14 @@ static int s3c_udc_clear_feature(struct usb_ep *_ep)
 
 		if (usb_ctrl->wValue == USB_ENDPOINT_HALT) {
 			if (ep_num == 0) {
-				s3c_udc_ep0_set_stall(ep);
+				dwc2_udc_ep0_set_stall(ep);
 				return 0;
 			}
 
-			s3c_udc_ep0_zlp(dev);
+			dwc2_udc_ep0_zlp(dev);
 
-			s3c_udc_ep_clear_stall(ep);
-			s3c_udc_ep_activate(ep);
+			dwc2_udc_ep_clear_stall(ep);
+			dwc2_udc_ep_activate(ep);
 			ep->stopped = 0;
 
 			clear_feature_num = ep_num;
@@ -1187,13 +1187,13 @@ static int s3c_udc_clear_feature(struct usb_ep *_ep)
 	return 0;
 }
 
-static int s3c_udc_set_feature(struct usb_ep *_ep)
+static int dwc2_udc_set_feature(struct usb_ep *_ep)
 {
-	struct s3c_udc	*dev;
-	struct s3c_ep	*ep;
+	struct dwc2_udc	*dev;
+	struct dwc2_ep	*ep;
 	u8		ep_num;
 
-	ep = container_of(_ep, struct s3c_ep, ep);
+	ep = container_of(_ep, struct dwc2_ep, ep);
 	ep_num = ep_index(ep);
 	dev = ep->dev;
 
@@ -1232,7 +1232,7 @@ static int s3c_udc_set_feature(struct usb_ep *_ep)
 			break;
 		}
 
-		s3c_udc_ep0_zlp(dev);
+		dwc2_udc_ep0_zlp(dev);
 		return 0;
 
 	case USB_RECIP_INTERFACE:
@@ -1245,14 +1245,14 @@ static int s3c_udc_set_feature(struct usb_ep *_ep)
 			   "\tSET_FEATURE: USB_RECIP_ENDPOINT\n");
 		if (usb_ctrl->wValue == USB_ENDPOINT_HALT) {
 			if (ep_num == 0) {
-				s3c_udc_ep0_set_stall(ep);
+				dwc2_udc_ep0_set_stall(ep);
 				return 0;
 			}
 			ep->stopped = 1;
-			s3c_udc_ep_set_stall(ep);
+			dwc2_udc_ep_set_stall(ep);
 		}
 
-		s3c_udc_ep0_zlp(dev);
+		dwc2_udc_ep0_zlp(dev);
 		return 0;
 	}
 
@@ -1262,9 +1262,9 @@ static int s3c_udc_set_feature(struct usb_ep *_ep)
 /*
  * WAIT_FOR_SETUP (OUT_PKT_RDY)
  */
-void s3c_ep0_setup(struct s3c_udc *dev)
+static void dwc2_ep0_setup(struct dwc2_udc *dev)
 {
-	struct s3c_ep *ep = &dev->ep[0];
+	struct dwc2_ep *ep = &dev->ep[0];
 	int i;
 	u8 ep_num;
 
@@ -1272,7 +1272,7 @@ void s3c_ep0_setup(struct s3c_udc *dev)
 	nuke(ep, -EPROTO);
 
 	/* read control req from fifo (8 bytes) */
-	s3c_fifo_read(ep, (u32 *)usb_ctrl, 8);
+	dwc2_fifo_read(ep, (u32 *)usb_ctrl, 8);
 
 	debug_cond(DEBUG_SETUP != 0,
 		   "%s: bRequestType = 0x%x(%s), bRequest = 0x%x"
@@ -1306,7 +1306,7 @@ void s3c_ep0_setup(struct s3c_udc *dev)
 			   "wLength = %d, setup returned\n",
 			   usb_ctrl->wLength);
 
-		s3c_udc_ep0_set_stall(ep);
+		dwc2_udc_ep0_set_stall(ep);
 		dev->ep0state = WAIT_FOR_SETUP;
 
 		return;
@@ -1317,7 +1317,7 @@ void s3c_ep0_setup(struct s3c_udc *dev)
 			   "%s:BOT Rest:invalid wLength =%d, setup returned\n",
 			   __func__, usb_ctrl->wLength);
 
-		s3c_udc_ep0_set_stall(ep);
+		dwc2_udc_ep0_set_stall(ep);
 		dev->ep0state = WAIT_FOR_SETUP;
 
 		return;
@@ -1384,7 +1384,7 @@ void s3c_ep0_setup(struct s3c_udc *dev)
 			break;
 
 		case USB_REQ_GET_STATUS:
-			if (!s3c_udc_get_status(dev, usb_ctrl))
+			if (!dwc2_udc_get_status(dev, usb_ctrl))
 				return;
 
 			break;
@@ -1392,7 +1392,7 @@ void s3c_ep0_setup(struct s3c_udc *dev)
 		case USB_REQ_CLEAR_FEATURE:
 			ep_num = usb_ctrl->wIndex & 0x7f;
 
-			if (!s3c_udc_clear_feature(&dev->ep[ep_num].ep))
+			if (!dwc2_udc_clear_feature(&dev->ep[ep_num].ep))
 				return;
 
 			break;
@@ -1400,7 +1400,7 @@ void s3c_ep0_setup(struct s3c_udc *dev)
 		case USB_REQ_SET_FEATURE:
 			ep_num = usb_ctrl->wIndex & 0x7f;
 
-			if (!s3c_udc_set_feature(&dev->ep[ep_num].ep))
+			if (!dwc2_udc_set_feature(&dev->ep[ep_num].ep))
 				return;
 
 			break;
@@ -1427,7 +1427,7 @@ void s3c_ep0_setup(struct s3c_udc *dev)
 
 		if (i < 0) {
 			/* setup processing failed, force stall */
-			s3c_udc_ep0_set_stall(ep);
+			dwc2_udc_ep0_set_stall(ep);
 			dev->ep0state = WAIT_FOR_SETUP;
 
 			debug_cond(DEBUG_SETUP != 0,
@@ -1451,12 +1451,12 @@ void s3c_ep0_setup(struct s3c_udc *dev)
 /*
  * handle ep0 interrupt
  */
-static void s3c_handle_ep0(struct s3c_udc *dev)
+static void dwc2_handle_ep0(struct dwc2_udc *dev)
 {
 	if (dev->ep0state == WAIT_FOR_SETUP) {
 		debug_cond(DEBUG_OUT_EP != 0,
 			   "%s: WAIT_FOR_SETUP\n", __func__);
-		s3c_ep0_setup(dev);
+		dwc2_ep0_setup(dev);
 
 	} else {
 		debug_cond(DEBUG_OUT_EP != 0,
@@ -1465,16 +1465,16 @@ static void s3c_handle_ep0(struct s3c_udc *dev)
 	}
 }
 
-static void s3c_ep0_kick(struct s3c_udc *dev, struct s3c_ep *ep)
+static void dwc2_ep0_kick(struct dwc2_udc *dev, struct dwc2_ep *ep)
 {
 	debug_cond(DEBUG_EP0 != 0,
 		   "%s: ep_is_in = %d\n", __func__, ep_is_in(ep));
 	if (ep_is_in(ep)) {
 		dev->ep0state = DATA_STATE_XMIT;
-		s3c_ep0_write(dev);
+		dwc2_ep0_write(dev);
 
 	} else {
 		dev->ep0state = DATA_STATE_RECV;
-		s3c_ep0_read(dev);
+		dwc2_ep0_read(dev);
 	}
 }
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 0096a2fdd9..39f7185e86 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -26,6 +26,14 @@ config USB_XHCI_UNIPHIER
 
 endif
 
+config USB_OHCI_GENERIC
+	bool "Support for generic OHCI USB controller"
+	depends on OF_CONTROL
+	depends on DM_USB
+	default n
+	---help---
+	  Enables support for generic OHCI controller.
+
 config USB_EHCI_HCD
 	bool "EHCI HCD (USB 2.0) support"
 	---help---
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index 0b4b458cca..6183b80c75 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -21,6 +21,7 @@ obj-$(CONFIG_USB_OHCI_S3C24XX) += ohci-s3c24xx.o
 obj-$(CONFIG_USB_OHCI_EP93XX) += ohci-ep93xx.o
 obj-$(CONFIG_USB_OHCI_SUNXI) += ohci-sunxi.o
 obj-$(CONFIG_USB_OHCI_LPC32XX) += ohci-lpc32xx.o
+obj-$(CONFIG_USB_OHCI_GENERIC) += ohci-generic.o
 
 # echi
 obj-$(CONFIG_USB_EHCI) += ehci-hcd.o
diff --git a/drivers/usb/host/ehci-exynos.c b/drivers/usb/host/ehci-exynos.c
index 18e9251b64..bede04b748 100644
--- a/drivers/usb/host/ehci-exynos.c
+++ b/drivers/usb/host/ehci-exynos.c
@@ -219,14 +219,14 @@ static int ehci_usb_probe(struct udevice *dev)
 
 	ctx->hcd = (struct ehci_hccr *)plat->hcd_base;
 	ctx->usb = (struct exynos_usb_phy *)plat->phy_base;
-	hcor = (struct ehci_hcor *)((uint32_t)ctx->hcd +
-			HC_LENGTH(ehci_readl(&ctx->hcd->cr_capbase)));
 
 	/* setup the Vbus gpio here */
 	if (dm_gpio_is_valid(&plat->vbus_gpio))
 		dm_gpio_set_value(&plat->vbus_gpio, 1);
 
 	setup_usb_phy(ctx->usb);
+	hcor = (struct ehci_hcor *)((uint32_t)ctx->hcd +
+			HC_LENGTH(ehci_readl(&ctx->hcd->cr_capbase)));
 
 	return ehci_register(dev, ctx->hcd, hcor, NULL, 0, USB_INIT_HOST);
 }
diff --git a/drivers/usb/host/ohci-generic.c b/drivers/usb/host/ohci-generic.c
new file mode 100644
index 0000000000..f3307f47a7
--- /dev/null
+++ b/drivers/usb/host/ohci-generic.c
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2015 Alexey Brodkin <abrodkin@synopsys.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include "ohci.h"
+
+#if !defined(CONFIG_USB_OHCI_NEW)
+# error "Generic OHCI driver requires CONFIG_USB_OHCI_NEW"
+#endif
+
+struct generic_ohci {
+	ohci_t ohci;
+};
+
+static int ohci_usb_probe(struct udevice *dev)
+{
+	struct ohci_regs *regs = (struct ohci_regs *)dev_get_addr(dev);
+
+	return ohci_register(dev, regs);
+}
+
+static int ohci_usb_remove(struct udevice *dev)
+{
+	return ohci_deregister(dev);
+}
+
+static const struct udevice_id ohci_usb_ids[] = {
+	{ .compatible = "generic-ohci" },
+	{ }
+};
+
+U_BOOT_DRIVER(ohci_generic) = {
+	.name	= "ohci_generic",
+	.id	= UCLASS_USB,
+	.of_match = ohci_usb_ids,
+	.probe = ohci_usb_probe,
+	.remove = ohci_usb_remove,
+	.ops	= &ohci_usb_ops,
+	.priv_auto_alloc_size = sizeof(struct generic_ohci),
+	.flags	= DM_FLAG_ALLOC_PRIV_DMA,
+};