usb: gadget: Gadget directory cleanup - group UDC drivers

The drivers/usb/gadget directory contains many files.
Files which are related can be distributed into separate directories.
This patch moves the UDC drivers into a separate directory.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

1 files changed, 0 insertions, 1216 deletions

diff --git a/drivers/usb/gadget/fotg210-udc.c b/drivers/usb/gadget/fotg210-udc.c
deleted file mode 100644
index e143d69f601..00000000000
--- a/drivers/usb/gadget/fotg210-udc.c
+++ /dev/null
@@ -1,1216 +0,0 @@
-/*
- * FOTG210 UDC Driver supports Bulk transfer so far
- *
- * Copyright (C) 2013 Faraday Technology Corporation
- *
- * Author : Yuan-Hsin Chen <yhchen@faraday-tech.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- */
-
-#include <linux/dma-mapping.h>
-#include <linux/err.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/usb/ch9.h>
-#include <linux/usb/gadget.h>
-
-#include "fotg210.h"
-
-#define	DRIVER_DESC	"FOTG210 USB Device Controller Driver"
-#define	DRIVER_VERSION	"30-April-2013"
-
-static const char udc_name[] = "fotg210_udc";
-static const char * const fotg210_ep_name[] = {
-	"ep0", "ep1", "ep2", "ep3", "ep4"};
-
-static void fotg210_disable_fifo_int(struct fotg210_ep *ep)
-{
-	u32 value = ioread32(ep->fotg210->reg + FOTG210_DMISGR1);
-
-	if (ep->dir_in)
-		value |= DMISGR1_MF_IN_INT(ep->epnum - 1);
-	else
-		value |= DMISGR1_MF_OUTSPK_INT(ep->epnum - 1);
-	iowrite32(value, ep->fotg210->reg + FOTG210_DMISGR1);
-}
-
-static void fotg210_enable_fifo_int(struct fotg210_ep *ep)
-{
-	u32 value = ioread32(ep->fotg210->reg + FOTG210_DMISGR1);
-
-	if (ep->dir_in)
-		value &= ~DMISGR1_MF_IN_INT(ep->epnum - 1);
-	else
-		value &= ~DMISGR1_MF_OUTSPK_INT(ep->epnum - 1);
-	iowrite32(value, ep->fotg210->reg + FOTG210_DMISGR1);
-}
-
-static void fotg210_set_cxdone(struct fotg210_udc *fotg210)
-{
-	u32 value = ioread32(fotg210->reg + FOTG210_DCFESR);
-
-	value |= DCFESR_CX_DONE;
-	iowrite32(value, fotg210->reg + FOTG210_DCFESR);
-}
-
-static void fotg210_done(struct fotg210_ep *ep, struct fotg210_request *req,
-			int status)
-{
-	list_del_init(&req->queue);
-
-	/* don't modify queue heads during completion callback */
-	if (ep->fotg210->gadget.speed == USB_SPEED_UNKNOWN)
-		req->req.status = -ESHUTDOWN;
-	else
-		req->req.status = status;
-
-	spin_unlock(&ep->fotg210->lock);
-	req->req.complete(&ep->ep, &req->req);
-	spin_lock(&ep->fotg210->lock);
-
-	if (ep->epnum) {
-		if (list_empty(&ep->queue))
-			fotg210_disable_fifo_int(ep);
-	} else {
-		fotg210_set_cxdone(ep->fotg210);
-	}
-}
-
-static void fotg210_fifo_ep_mapping(struct fotg210_ep *ep, u32 epnum,
-				u32 dir_in)
-{
-	struct fotg210_udc *fotg210 = ep->fotg210;
-	u32 val;
-
-	/* Driver should map an ep to a fifo and then map the fifo
-	 * to the ep. What a brain-damaged design!
-	 */
-
-	/* map a fifo to an ep */
-	val = ioread32(fotg210->reg + FOTG210_EPMAP);
-	val &= ~EPMAP_FIFONOMSK(epnum, dir_in);
-	val |= EPMAP_FIFONO(epnum, dir_in);
-	iowrite32(val, fotg210->reg + FOTG210_EPMAP);
-
-	/* map the ep to the fifo */
-	val = ioread32(fotg210->reg + FOTG210_FIFOMAP);
-	val &= ~FIFOMAP_EPNOMSK(epnum);
-	val |= FIFOMAP_EPNO(epnum);
-	iowrite32(val, fotg210->reg + FOTG210_FIFOMAP);
-
-	/* enable fifo */
-	val = ioread32(fotg210->reg + FOTG210_FIFOCF);
-	val |= FIFOCF_FIFO_EN(epnum - 1);
-	iowrite32(val, fotg210->reg + FOTG210_FIFOCF);
-}
-
-static void fotg210_set_fifo_dir(struct fotg210_ep *ep, u32 epnum, u32 dir_in)
-{
-	struct fotg210_udc *fotg210 = ep->fotg210;
-	u32 val;
-
-	val = ioread32(fotg210->reg + FOTG210_FIFOMAP);
-	val |= (dir_in ? FIFOMAP_DIRIN(epnum - 1) : FIFOMAP_DIROUT(epnum - 1));
-	iowrite32(val, fotg210->reg + FOTG210_FIFOMAP);
-}
-
-static void fotg210_set_tfrtype(struct fotg210_ep *ep, u32 epnum, u32 type)
-{
-	struct fotg210_udc *fotg210 = ep->fotg210;
-	u32 val;
-
-	val = ioread32(fotg210->reg + FOTG210_FIFOCF);
-	val |= FIFOCF_TYPE(type, epnum - 1);
-	iowrite32(val, fotg210->reg + FOTG210_FIFOCF);
-}
-
-static void fotg210_set_mps(struct fotg210_ep *ep, u32 epnum, u32 mps,
-				u32 dir_in)
-{
-	struct fotg210_udc *fotg210 = ep->fotg210;
-	u32 val;
-	u32 offset = dir_in ? FOTG210_INEPMPSR(epnum) :
-				FOTG210_OUTEPMPSR(epnum);
-
-	val = ioread32(fotg210->reg + offset);
-	val |= INOUTEPMPSR_MPS(mps);
-	iowrite32(val, fotg210->reg + offset);
-}
-
-static int fotg210_config_ep(struct fotg210_ep *ep,
-		     const struct usb_endpoint_descriptor *desc)
-{
-	struct fotg210_udc *fotg210 = ep->fotg210;
-
-	fotg210_set_fifo_dir(ep, ep->epnum, ep->dir_in);
-	fotg210_set_tfrtype(ep, ep->epnum, ep->type);
-	fotg210_set_mps(ep, ep->epnum, ep->ep.maxpacket, ep->dir_in);
-	fotg210_fifo_ep_mapping(ep, ep->epnum, ep->dir_in);
-
-	fotg210->ep[ep->epnum] = ep;
-
-	return 0;
-}
-
-static int fotg210_ep_enable(struct usb_ep *_ep,
-			  const struct usb_endpoint_descriptor *desc)
-{
-	struct fotg210_ep *ep;
-
-	ep = container_of(_ep, struct fotg210_ep, ep);
-
-	ep->desc = desc;
-	ep->epnum = usb_endpoint_num(desc);
-	ep->type = usb_endpoint_type(desc);
-	ep->dir_in = usb_endpoint_dir_in(desc);
-	ep->ep.maxpacket = usb_endpoint_maxp(desc);
-
-	return fotg210_config_ep(ep, desc);
-}
-
-static void fotg210_reset_tseq(struct fotg210_udc *fotg210, u8 epnum)
-{
-	struct fotg210_ep *ep = fotg210->ep[epnum];
-	u32 value;
-	void __iomem *reg;
-
-	reg = (ep->dir_in) ?
-		fotg210->reg + FOTG210_INEPMPSR(epnum) :
-		fotg210->reg + FOTG210_OUTEPMPSR(epnum);
-
-	/* Note: Driver needs to set and clear INOUTEPMPSR_RESET_TSEQ
-	 *	 bit. Controller wouldn't clear this bit. WTF!!!
-	 */
-
-	value = ioread32(reg);
-	value |= INOUTEPMPSR_RESET_TSEQ;
-	iowrite32(value, reg);
-
-	value = ioread32(reg);
-	value &= ~INOUTEPMPSR_RESET_TSEQ;
-	iowrite32(value, reg);
-}
-
-static int fotg210_ep_release(struct fotg210_ep *ep)
-{
-	if (!ep->epnum)
-		return 0;
-	ep->epnum = 0;
-	ep->stall = 0;
-	ep->wedged = 0;
-
-	fotg210_reset_tseq(ep->fotg210, ep->epnum);
-
-	return 0;
-}
-
-static int fotg210_ep_disable(struct usb_ep *_ep)
-{
-	struct fotg210_ep *ep;
-	struct fotg210_request *req;
-	unsigned long flags;
-
-	BUG_ON(!_ep);
-
-	ep = container_of(_ep, struct fotg210_ep, ep);
-
-	while (!list_empty(&ep->queue)) {
-		req = list_entry(ep->queue.next,
-			struct fotg210_request, queue);
-		spin_lock_irqsave(&ep->fotg210->lock, flags);
-		fotg210_done(ep, req, -ECONNRESET);
-		spin_unlock_irqrestore(&ep->fotg210->lock, flags);
-	}
-
-	return fotg210_ep_release(ep);
-}
-
-static struct usb_request *fotg210_ep_alloc_request(struct usb_ep *_ep,
-						gfp_t gfp_flags)
-{
-	struct fotg210_request *req;
-
-	req = kzalloc(sizeof(struct fotg210_request), gfp_flags);
-	if (!req)
-		return NULL;
-
-	INIT_LIST_HEAD(&req->queue);
-
-	return &req->req;
-}
-
-static void fotg210_ep_free_request(struct usb_ep *_ep,
-					struct usb_request *_req)
-{
-	struct fotg210_request *req;
-
-	req = container_of(_req, struct fotg210_request, req);
-	kfree(req);
-}
-
-static void fotg210_enable_dma(struct fotg210_ep *ep,
-			      dma_addr_t d, u32 len)
-{
-	u32 value;
-	struct fotg210_udc *fotg210 = ep->fotg210;
-
-	/* set transfer length and direction */
-	value = ioread32(fotg210->reg + FOTG210_DMACPSR1);
-	value &= ~(DMACPSR1_DMA_LEN(0xFFFF) | DMACPSR1_DMA_TYPE(1));
-	value |= DMACPSR1_DMA_LEN(len) | DMACPSR1_DMA_TYPE(ep->dir_in);
-	iowrite32(value, fotg210->reg + FOTG210_DMACPSR1);
-
-	/* set device DMA target FIFO number */
-	value = ioread32(fotg210->reg + FOTG210_DMATFNR);
-	if (ep->epnum)
-		value |= DMATFNR_ACC_FN(ep->epnum - 1);
-	else
-		value |= DMATFNR_ACC_CXF;
-	iowrite32(value, fotg210->reg + FOTG210_DMATFNR);
-
-	/* set DMA memory address */
-	iowrite32(d, fotg210->reg + FOTG210_DMACPSR2);
-
-	/* enable MDMA_EROR and MDMA_CMPLT interrupt */
-	value = ioread32(fotg210->reg + FOTG210_DMISGR2);
-	value &= ~(DMISGR2_MDMA_CMPLT | DMISGR2_MDMA_ERROR);
-	iowrite32(value, fotg210->reg + FOTG210_DMISGR2);
-
-	/* start DMA */
-	value = ioread32(fotg210->reg + FOTG210_DMACPSR1);
-	value |= DMACPSR1_DMA_START;
-	iowrite32(value, fotg210->reg + FOTG210_DMACPSR1);
-}
-
-static void fotg210_disable_dma(struct fotg210_ep *ep)
-{
-	iowrite32(DMATFNR_DISDMA, ep->fotg210->reg + FOTG210_DMATFNR);
-}
-
-static void fotg210_wait_dma_done(struct fotg210_ep *ep)
-{
-	u32 value;
-
-	do {
-		value = ioread32(ep->fotg210->reg + FOTG210_DISGR2);
-		if ((value & DISGR2_USBRST_INT) ||
-		    (value & DISGR2_DMA_ERROR))
-			goto dma_reset;
-	} while (!(value & DISGR2_DMA_CMPLT));
-
-	value &= ~DISGR2_DMA_CMPLT;
-	iowrite32(value, ep->fotg210->reg + FOTG210_DISGR2);
-	return;
-
-dma_reset:
-	value = ioread32(ep->fotg210->reg + FOTG210_DMACPSR1);
-	value |= DMACPSR1_DMA_ABORT;
-	iowrite32(value, ep->fotg210->reg + FOTG210_DMACPSR1);
-
-	/* reset fifo */
-	if (ep->epnum) {
-		value = ioread32(ep->fotg210->reg +
-				FOTG210_FIBCR(ep->epnum - 1));
-		value |= FIBCR_FFRST;
-		iowrite32(value, ep->fotg210->reg +
-				FOTG210_FIBCR(ep->epnum - 1));
-	} else {
-		value = ioread32(ep->fotg210->reg + FOTG210_DCFESR);
-		value |= DCFESR_CX_CLR;
-		iowrite32(value, ep->fotg210->reg + FOTG210_DCFESR);
-	}
-}
-
-static void fotg210_start_dma(struct fotg210_ep *ep,
-			struct fotg210_request *req)
-{
-	dma_addr_t d;
-	u8 *buffer;
-	u32 length;
-
-	if (ep->epnum) {
-		if (ep->dir_in) {
-			buffer = req->req.buf;
-			length = req->req.length;
-		} else {
-			buffer = req->req.buf + req->req.actual;
-			length = ioread32(ep->fotg210->reg +
-					FOTG210_FIBCR(ep->epnum - 1));
-			length &= FIBCR_BCFX;
-		}
-	} else {
-		buffer = req->req.buf + req->req.actual;
-		if (req->req.length - req->req.actual > ep->ep.maxpacket)
-			length = ep->ep.maxpacket;
-		else
-			length = req->req.length;
-	}
-
-	d = dma_map_single(NULL, buffer, length,
-			ep->dir_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
-
-	if (dma_mapping_error(NULL, d)) {
-		pr_err("dma_mapping_error\n");
-		return;
-	}
-
-	dma_sync_single_for_device(NULL, d, length,
-				   ep->dir_in ? DMA_TO_DEVICE :
-					DMA_FROM_DEVICE);
-
-	fotg210_enable_dma(ep, d, length);
-
-	/* check if dma is done */
-	fotg210_wait_dma_done(ep);
-
-	fotg210_disable_dma(ep);
-
-	/* update actual transfer length */
-	req->req.actual += length;
-
-	dma_unmap_single(NULL, d, length, DMA_TO_DEVICE);
-}
-
-static void fotg210_ep0_queue(struct fotg210_ep *ep,
-				struct fotg210_request *req)
-{
-	if (!req->req.length) {
-		fotg210_done(ep, req, 0);
-		return;
-	}
-	if (ep->dir_in) { /* if IN */
-		if (req->req.length) {
-			fotg210_start_dma(ep, req);
-		} else {
-			pr_err("%s : req->req.length = 0x%x\n",
-			       __func__, req->req.length);
-		}
-		if ((req->req.length == req->req.actual) ||
-		    (req->req.actual < ep->ep.maxpacket))
-			fotg210_done(ep, req, 0);
-	} else { /* OUT */
-		if (!req->req.length) {
-			fotg210_done(ep, req, 0);
-		} else {
-			u32 value = ioread32(ep->fotg210->reg +
-						FOTG210_DMISGR0);
-
-			value &= ~DMISGR0_MCX_OUT_INT;
-			iowrite32(value, ep->fotg210->reg + FOTG210_DMISGR0);
-		}
-	}
-}
-
-static int fotg210_ep_queue(struct usb_ep *_ep, struct usb_request *_req,
-				gfp_t gfp_flags)
-{
-	struct fotg210_ep *ep;
-	struct fotg210_request *req;
-	unsigned long flags;
-	int request = 0;
-
-	ep = container_of(_ep, struct fotg210_ep, ep);
-	req = container_of(_req, struct fotg210_request, req);
-
-	if (ep->fotg210->gadget.speed == USB_SPEED_UNKNOWN)
-		return -ESHUTDOWN;
-
-	spin_lock_irqsave(&ep->fotg210->lock, flags);
-
-	if (list_empty(&ep->queue))
-		request = 1;
-
-	list_add_tail(&req->queue, &ep->queue);
-
-	req->req.actual = 0;
-	req->req.status = -EINPROGRESS;
-
-	if (!ep->epnum) /* ep0 */
-		fotg210_ep0_queue(ep, req);
-	else if (request && !ep->stall)
-		fotg210_enable_fifo_int(ep);
-
-	spin_unlock_irqrestore(&ep->fotg210->lock, flags);
-
-	return 0;
-}
-
-static int fotg210_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req)
-{
-	struct fotg210_ep *ep;
-	struct fotg210_request *req;
-	unsigned long flags;
-
-	ep = container_of(_ep, struct fotg210_ep, ep);
-	req = container_of(_req, struct fotg210_request, req);
-
-	spin_lock_irqsave(&ep->fotg210->lock, flags);
-	if (!list_empty(&ep->queue))
-		fotg210_done(ep, req, -ECONNRESET);
-	spin_unlock_irqrestore(&ep->fotg210->lock, flags);
-
-	return 0;
-}
-
-static void fotg210_set_epnstall(struct fotg210_ep *ep)
-{
-	struct fotg210_udc *fotg210 = ep->fotg210;
-	u32 value;
-	void __iomem *reg;
-
-	/* check if IN FIFO is empty before stall */
-	if (ep->dir_in) {
-		do {
-			value = ioread32(fotg210->reg + FOTG210_DCFESR);
-		} while (!(value & DCFESR_FIFO_EMPTY(ep->epnum - 1)));
-	}
-
-	reg = (ep->dir_in) ?
-		fotg210->reg + FOTG210_INEPMPSR(ep->epnum) :
-		fotg210->reg + FOTG210_OUTEPMPSR(ep->epnum);
-	value = ioread32(reg);
-	value |= INOUTEPMPSR_STL_EP;
-	iowrite32(value, reg);
-}
-
-static void fotg210_clear_epnstall(struct fotg210_ep *ep)
-{
-	struct fotg210_udc *fotg210 = ep->fotg210;
-	u32 value;
-	void __iomem *reg;
-
-	reg = (ep->dir_in) ?
-		fotg210->reg + FOTG210_INEPMPSR(ep->epnum) :
-		fotg210->reg + FOTG210_OUTEPMPSR(ep->epnum);
-	value = ioread32(reg);
-	value &= ~INOUTEPMPSR_STL_EP;
-	iowrite32(value, reg);
-}
-
-static int fotg210_set_halt_and_wedge(struct usb_ep *_ep, int value, int wedge)
-{
-	struct fotg210_ep *ep;
-	struct fotg210_udc *fotg210;
-	unsigned long flags;
-	int ret = 0;
-
-	ep = container_of(_ep, struct fotg210_ep, ep);
-
-	fotg210 = ep->fotg210;
-
-	spin_lock_irqsave(&ep->fotg210->lock, flags);
-
-	if (value) {
-		fotg210_set_epnstall(ep);
-		ep->stall = 1;
-		if (wedge)
-			ep->wedged = 1;
-	} else {
-		fotg210_reset_tseq(fotg210, ep->epnum);
-		fotg210_clear_epnstall(ep);
-		ep->stall = 0;
-		ep->wedged = 0;
-		if (!list_empty(&ep->queue))
-			fotg210_enable_fifo_int(ep);
-	}
-
-	spin_unlock_irqrestore(&ep->fotg210->lock, flags);
-	return ret;
-}
-
-static int fotg210_ep_set_halt(struct usb_ep *_ep, int value)
-{
-	return fotg210_set_halt_and_wedge(_ep, value, 0);
-}
-
-static int fotg210_ep_set_wedge(struct usb_ep *_ep)
-{
-	return fotg210_set_halt_and_wedge(_ep, 1, 1);
-}
-
-static void fotg210_ep_fifo_flush(struct usb_ep *_ep)
-{
-}
-
-static struct usb_ep_ops fotg210_ep_ops = {
-	.enable		= fotg210_ep_enable,
-	.disable	= fotg210_ep_disable,
-
-	.alloc_request	= fotg210_ep_alloc_request,
-	.free_request	= fotg210_ep_free_request,
-
-	.queue		= fotg210_ep_queue,
-	.dequeue	= fotg210_ep_dequeue,
-
-	.set_halt	= fotg210_ep_set_halt,
-	.fifo_flush	= fotg210_ep_fifo_flush,
-	.set_wedge	= fotg210_ep_set_wedge,
-};
-
-static void fotg210_clear_tx0byte(struct fotg210_udc *fotg210)
-{
-	u32 value = ioread32(fotg210->reg + FOTG210_TX0BYTE);
-
-	value &= ~(TX0BYTE_EP1 | TX0BYTE_EP2 | TX0BYTE_EP3
-		   | TX0BYTE_EP4);
-	iowrite32(value, fotg210->reg + FOTG210_TX0BYTE);
-}
-
-static void fotg210_clear_rx0byte(struct fotg210_udc *fotg210)
-{
-	u32 value = ioread32(fotg210->reg + FOTG210_RX0BYTE);
-
-	value &= ~(RX0BYTE_EP1 | RX0BYTE_EP2 | RX0BYTE_EP3
-		   | RX0BYTE_EP4);
-	iowrite32(value, fotg210->reg + FOTG210_RX0BYTE);
-}
-
-/* read 8-byte setup packet only */
-static void fotg210_rdsetupp(struct fotg210_udc *fotg210,
-		   u8 *buffer)
-{
-	int i = 0;
-	u8 *tmp = buffer;
-	u32 data;
-	u32 length = 8;
-
-	iowrite32(DMATFNR_ACC_CXF, fotg210->reg + FOTG210_DMATFNR);
-
-	for (i = (length >> 2); i > 0; i--) {
-		data = ioread32(fotg210->reg + FOTG210_CXPORT);
-		*tmp = data & 0xFF;
-		*(tmp + 1) = (data >> 8) & 0xFF;
-		*(tmp + 2) = (data >> 16) & 0xFF;
-		*(tmp + 3) = (data >> 24) & 0xFF;
-		tmp = tmp + 4;
-	}
-
-	switch (length % 4) {
-	case 1:
-		data = ioread32(fotg210->reg + FOTG210_CXPORT);
-		*tmp = data & 0xFF;
-		break;
-	case 2:
-		data = ioread32(fotg210->reg + FOTG210_CXPORT);
-		*tmp = data & 0xFF;
-		*(tmp + 1) = (data >> 8) & 0xFF;
-		break;
-	case 3:
-		data = ioread32(fotg210->reg + FOTG210_CXPORT);
-		*tmp = data & 0xFF;
-		*(tmp + 1) = (data >> 8) & 0xFF;
-		*(tmp + 2) = (data >> 16) & 0xFF;
-		break;
-	default:
-		break;
-	}
-
-	iowrite32(DMATFNR_DISDMA, fotg210->reg + FOTG210_DMATFNR);
-}
-
-static void fotg210_set_configuration(struct fotg210_udc *fotg210)
-{
-	u32 value = ioread32(fotg210->reg + FOTG210_DAR);
-
-	value |= DAR_AFT_CONF;
-	iowrite32(value, fotg210->reg + FOTG210_DAR);
-}
-
-static void fotg210_set_dev_addr(struct fotg210_udc *fotg210, u32 addr)
-{
-	u32 value = ioread32(fotg210->reg + FOTG210_DAR);
-
-	value |= (addr & 0x7F);
-	iowrite32(value, fotg210->reg + FOTG210_DAR);
-}
-
-static void fotg210_set_cxstall(struct fotg210_udc *fotg210)
-{
-	u32 value = ioread32(fotg210->reg + FOTG210_DCFESR);
-
-	value |= DCFESR_CX_STL;
-	iowrite32(value, fotg210->reg + FOTG210_DCFESR);
-}
-
-static void fotg210_request_error(struct fotg210_udc *fotg210)
-{
-	fotg210_set_cxstall(fotg210);
-	pr_err("request error!!\n");
-}
-
-static void fotg210_set_address(struct fotg210_udc *fotg210,
-				struct usb_ctrlrequest *ctrl)
-{
-	if (ctrl->wValue >= 0x0100) {
-		fotg210_request_error(fotg210);
-	} else {
-		fotg210_set_dev_addr(fotg210, ctrl->wValue);
-		fotg210_set_cxdone(fotg210);
-	}
-}
-
-static void fotg210_set_feature(struct fotg210_udc *fotg210,
-				struct usb_ctrlrequest *ctrl)
-{
-	switch (ctrl->bRequestType & USB_RECIP_MASK) {
-	case USB_RECIP_DEVICE:
-		fotg210_set_cxdone(fotg210);
-		break;
-	case USB_RECIP_INTERFACE:
-		fotg210_set_cxdone(fotg210);
-		break;
-	case USB_RECIP_ENDPOINT: {
-		u8 epnum;
-		epnum = le16_to_cpu(ctrl->wIndex) & USB_ENDPOINT_NUMBER_MASK;
-		if (epnum)
-			fotg210_set_epnstall(fotg210->ep[epnum]);
-		else
-			fotg210_set_cxstall(fotg210);
-		fotg210_set_cxdone(fotg210);
-		}
-		break;
-	default:
-		fotg210_request_error(fotg210);
-		break;
-	}
-}
-
-static void fotg210_clear_feature(struct fotg210_udc *fotg210,
-				struct usb_ctrlrequest *ctrl)
-{
-	struct fotg210_ep *ep =
-		fotg210->ep[ctrl->wIndex & USB_ENDPOINT_NUMBER_MASK];
-
-	switch (ctrl->bRequestType & USB_RECIP_MASK) {
-	case USB_RECIP_DEVICE:
-		fotg210_set_cxdone(fotg210);
-		break;
-	case USB_RECIP_INTERFACE:
-		fotg210_set_cxdone(fotg210);
-		break;
-	case USB_RECIP_ENDPOINT:
-		if (ctrl->wIndex & USB_ENDPOINT_NUMBER_MASK) {
-			if (ep->wedged) {
-				fotg210_set_cxdone(fotg210);
-				break;
-			}
-			if (ep->stall)
-				fotg210_set_halt_and_wedge(&ep->ep, 0, 0);
-		}
-		fotg210_set_cxdone(fotg210);
-		break;
-	default:
-		fotg210_request_error(fotg210);
-		break;
-	}
-}
-
-static int fotg210_is_epnstall(struct fotg210_ep *ep)
-{
-	struct fotg210_udc *fotg210 = ep->fotg210;
-	u32 value;
-	void __iomem *reg;
-
-	reg = (ep->dir_in) ?
-		fotg210->reg + FOTG210_INEPMPSR(ep->epnum) :
-		fotg210->reg + FOTG210_OUTEPMPSR(ep->epnum);
-	value = ioread32(reg);
-	return value & INOUTEPMPSR_STL_EP ? 1 : 0;
-}
-
-static void fotg210_get_status(struct fotg210_udc *fotg210,
-				struct usb_ctrlrequest *ctrl)
-{
-	u8 epnum;
-
-	switch (ctrl->bRequestType & USB_RECIP_MASK) {
-	case USB_RECIP_DEVICE:
-		fotg210->ep0_data = 1 << USB_DEVICE_SELF_POWERED;
-		break;
-	case USB_RECIP_INTERFACE:
-		fotg210->ep0_data = 0;
-		break;
-	case USB_RECIP_ENDPOINT:
-		epnum = ctrl->wIndex & USB_ENDPOINT_NUMBER_MASK;
-		if (epnum)
-			fotg210->ep0_data =
-				fotg210_is_epnstall(fotg210->ep[epnum])
-				<< USB_ENDPOINT_HALT;
-		else
-			fotg210_request_error(fotg210);
-		break;
-
-	default:
-		fotg210_request_error(fotg210);
-		return;		/* exit */
-	}
-
-	fotg210->ep0_req->buf = &fotg210->ep0_data;
-	fotg210->ep0_req->length = 2;
-
-	spin_unlock(&fotg210->lock);
-	fotg210_ep_queue(fotg210->gadget.ep0, fotg210->ep0_req, GFP_KERNEL);
-	spin_lock(&fotg210->lock);
-}
-
-static int fotg210_setup_packet(struct fotg210_udc *fotg210,
-				struct usb_ctrlrequest *ctrl)
-{
-	u8 *p = (u8 *)ctrl;
-	u8 ret = 0;
-
-	fotg210_rdsetupp(fotg210, p);
-
-	fotg210->ep[0]->dir_in = ctrl->bRequestType & USB_DIR_IN;
-
-	if (fotg210->gadget.speed == USB_SPEED_UNKNOWN) {
-		u32 value = ioread32(fotg210->reg + FOTG210_DMCR);
-		fotg210->gadget.speed = value & DMCR_HS_EN ?
-				USB_SPEED_HIGH : USB_SPEED_FULL;
-	}
-
-	/* check request */
-	if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) {
-		switch (ctrl->bRequest) {
-		case USB_REQ_GET_STATUS:
-			fotg210_get_status(fotg210, ctrl);
-			break;
-		case USB_REQ_CLEAR_FEATURE:
-			fotg210_clear_feature(fotg210, ctrl);
-			break;
-		case USB_REQ_SET_FEATURE:
-			fotg210_set_feature(fotg210, ctrl);
-			break;
-		case USB_REQ_SET_ADDRESS:
-			fotg210_set_address(fotg210, ctrl);
-			break;
-		case USB_REQ_SET_CONFIGURATION:
-			fotg210_set_configuration(fotg210);
-			ret = 1;
-			break;
-		default:
-			ret = 1;
-			break;
-		}
-	} else {
-		ret = 1;
-	}
-
-	return ret;
-}
-
-static void fotg210_ep0out(struct fotg210_udc *fotg210)
-{
-	struct fotg210_ep *ep = fotg210->ep[0];
-
-	if (!list_empty(&ep->queue) && !ep->dir_in) {
-		struct fotg210_request *req;
-
-		req = list_first_entry(&ep->queue,
-			struct fotg210_request, queue);
-
-		if (req->req.length)
-			fotg210_start_dma(ep, req);
-
-		if ((req->req.length - req->req.actual) < ep->ep.maxpacket)
-			fotg210_done(ep, req, 0);
-	} else {
-		pr_err("%s : empty queue\n", __func__);
-	}
-}
-
-static void fotg210_ep0in(struct fotg210_udc *fotg210)
-{
-	struct fotg210_ep *ep = fotg210->ep[0];
-
-	if ((!list_empty(&ep->queue)) && (ep->dir_in)) {
-		struct fotg210_request *req;
-
-		req = list_entry(ep->queue.next,
-				struct fotg210_request, queue);
-
-		if (req->req.length)
-			fotg210_start_dma(ep, req);
-
-		if ((req->req.length - req->req.actual) < ep->ep.maxpacket)
-			fotg210_done(ep, req, 0);
-	} else {
-		fotg210_set_cxdone(fotg210);
-	}
-}
-
-static void fotg210_clear_comabt_int(struct fotg210_udc *fotg210)
-{
-	u32 value = ioread32(fotg210->reg + FOTG210_DISGR0);
-
-	value &= ~DISGR0_CX_COMABT_INT;
-	iowrite32(value, fotg210->reg + FOTG210_DISGR0);
-}
-
-static void fotg210_in_fifo_handler(struct fotg210_ep *ep)
-{
-	struct fotg210_request *req = list_entry(ep->queue.next,
-					struct fotg210_request, queue);
-
-	if (req->req.length)
-		fotg210_start_dma(ep, req);
-	fotg210_done(ep, req, 0);
-}
-
-static void fotg210_out_fifo_handler(struct fotg210_ep *ep)
-{
-	struct fotg210_request *req = list_entry(ep->queue.next,
-						 struct fotg210_request, queue);
-
-	fotg210_start_dma(ep, req);
-
-	/* finish out transfer */
-	if (req->req.length == req->req.actual ||
-	    req->req.actual < ep->ep.maxpacket)
-		fotg210_done(ep, req, 0);
-}
-
-static irqreturn_t fotg210_irq(int irq, void *_fotg210)
-{
-	struct fotg210_udc *fotg210 = _fotg210;
-	u32 int_grp = ioread32(fotg210->reg + FOTG210_DIGR);
-	u32 int_msk = ioread32(fotg210->reg + FOTG210_DMIGR);
-
-	int_grp &= ~int_msk;
-
-	spin_lock(&fotg210->lock);
-
-	if (int_grp & DIGR_INT_G2) {
-		void __iomem *reg = fotg210->reg + FOTG210_DISGR2;
-		u32 int_grp2 = ioread32(reg);
-		u32 int_msk2 = ioread32(fotg210->reg + FOTG210_DMISGR2);
-		u32 value;
-
-		int_grp2 &= ~int_msk2;
-
-		if (int_grp2 & DISGR2_USBRST_INT) {
-			value = ioread32(reg);
-			value &= ~DISGR2_USBRST_INT;
-			iowrite32(value, reg);
-			pr_info("fotg210 udc reset\n");
-		}
-		if (int_grp2 & DISGR2_SUSP_INT) {
-			value = ioread32(reg);
-			value &= ~DISGR2_SUSP_INT;
-			iowrite32(value, reg);
-			pr_info("fotg210 udc suspend\n");
-		}
-		if (int_grp2 & DISGR2_RESM_INT) {
-			value = ioread32(reg);
-			value &= ~DISGR2_RESM_INT;
-			iowrite32(value, reg);
-			pr_info("fotg210 udc resume\n");
-		}
-		if (int_grp2 & DISGR2_ISO_SEQ_ERR_INT) {
-			value = ioread32(reg);
-			value &= ~DISGR2_ISO_SEQ_ERR_INT;
-			iowrite32(value, reg);
-			pr_info("fotg210 iso sequence error\n");
-		}
-		if (int_grp2 & DISGR2_ISO_SEQ_ABORT_INT) {
-			value = ioread32(reg);
-			value &= ~DISGR2_ISO_SEQ_ABORT_INT;
-			iowrite32(value, reg);
-			pr_info("fotg210 iso sequence abort\n");
-		}
-		if (int_grp2 & DISGR2_TX0BYTE_INT) {
-			fotg210_clear_tx0byte(fotg210);
-			value = ioread32(reg);
-			value &= ~DISGR2_TX0BYTE_INT;
-			iowrite32(value, reg);
-			pr_info("fotg210 transferred 0 byte\n");
-		}
-		if (int_grp2 & DISGR2_RX0BYTE_INT) {
-			fotg210_clear_rx0byte(fotg210);
-			value = ioread32(reg);
-			value &= ~DISGR2_RX0BYTE_INT;
-			iowrite32(value, reg);
-			pr_info("fotg210 received 0 byte\n");
-		}
-		if (int_grp2 & DISGR2_DMA_ERROR) {
-			value = ioread32(reg);
-			value &= ~DISGR2_DMA_ERROR;
-			iowrite32(value, reg);
-		}
-	}
-
-	if (int_grp & DIGR_INT_G0) {
-		void __iomem *reg = fotg210->reg + FOTG210_DISGR0;
-		u32 int_grp0 = ioread32(reg);
-		u32 int_msk0 = ioread32(fotg210->reg + FOTG210_DMISGR0);
-		struct usb_ctrlrequest ctrl;
-
-		int_grp0 &= ~int_msk0;
-
-		/* the highest priority in this source register */
-		if (int_grp0 & DISGR0_CX_COMABT_INT) {
-			fotg210_clear_comabt_int(fotg210);
-			pr_info("fotg210 CX command abort\n");
-		}
-
-		if (int_grp0 & DISGR0_CX_SETUP_INT) {
-			if (fotg210_setup_packet(fotg210, &ctrl)) {
-				spin_unlock(&fotg210->lock);
-				if (fotg210->driver->setup(&fotg210->gadget,
-							   &ctrl) < 0)
-					fotg210_set_cxstall(fotg210);
-				spin_lock(&fotg210->lock);
-			}
-		}
-		if (int_grp0 & DISGR0_CX_COMEND_INT)
-			pr_info("fotg210 cmd end\n");
-
-		if (int_grp0 & DISGR0_CX_IN_INT)
-			fotg210_ep0in(fotg210);
-
-		if (int_grp0 & DISGR0_CX_OUT_INT)
-			fotg210_ep0out(fotg210);
-
-		if (int_grp0 & DISGR0_CX_COMFAIL_INT) {
-			fotg210_set_cxstall(fotg210);
-			pr_info("fotg210 ep0 fail\n");
-		}
-	}
-
-	if (int_grp & DIGR_INT_G1) {
-		void __iomem *reg = fotg210->reg + FOTG210_DISGR1;
-		u32 int_grp1 = ioread32(reg);
-		u32 int_msk1 = ioread32(fotg210->reg + FOTG210_DMISGR1);
-		int fifo;
-
-		int_grp1 &= ~int_msk1;
-
-		for (fifo = 0; fifo < FOTG210_MAX_FIFO_NUM; fifo++) {
-			if (int_grp1 & DISGR1_IN_INT(fifo))
-				fotg210_in_fifo_handler(fotg210->ep[fifo + 1]);
-
-			if ((int_grp1 & DISGR1_OUT_INT(fifo)) ||
-			    (int_grp1 & DISGR1_SPK_INT(fifo)))
-				fotg210_out_fifo_handler(fotg210->ep[fifo + 1]);
-		}
-	}
-
-	spin_unlock(&fotg210->lock);
-
-	return IRQ_HANDLED;
-}
-
-static void fotg210_disable_unplug(struct fotg210_udc *fotg210)
-{
-	u32 reg = ioread32(fotg210->reg + FOTG210_PHYTMSR);
-
-	reg &= ~PHYTMSR_UNPLUG;
-	iowrite32(reg, fotg210->reg + FOTG210_PHYTMSR);
-}
-
-static int fotg210_udc_start(struct usb_gadget *g,
-		struct usb_gadget_driver *driver)
-{
-	struct fotg210_udc *fotg210 = gadget_to_fotg210(g);
-	u32 value;
-
-	/* hook up the driver */
-	driver->driver.bus = NULL;
-	fotg210->driver = driver;
-
-	/* enable device global interrupt */
-	value = ioread32(fotg210->reg + FOTG210_DMCR);
-	value |= DMCR_GLINT_EN;
-	iowrite32(value, fotg210->reg + FOTG210_DMCR);
-
-	return 0;
-}
-
-static void fotg210_init(struct fotg210_udc *fotg210)
-{
-	u32 value;
-
-	/* disable global interrupt and set int polarity to active high */
-	iowrite32(GMIR_MHC_INT | GMIR_MOTG_INT | GMIR_INT_POLARITY,
-		  fotg210->reg + FOTG210_GMIR);
-
-	/* disable device global interrupt */
-	value = ioread32(fotg210->reg + FOTG210_DMCR);
-	value &= ~DMCR_GLINT_EN;
-	iowrite32(value, fotg210->reg + FOTG210_DMCR);
-
-	/* disable all fifo interrupt */
-	iowrite32(~(u32)0, fotg210->reg + FOTG210_DMISGR1);
-
-	/* disable cmd end */
-	value = ioread32(fotg210->reg + FOTG210_DMISGR0);
-	value |= DMISGR0_MCX_COMEND;
-	iowrite32(value, fotg210->reg + FOTG210_DMISGR0);
-}
-
-static int fotg210_udc_stop(struct usb_gadget *g,
-		struct usb_gadget_driver *driver)
-{
-	struct fotg210_udc *fotg210 = gadget_to_fotg210(g);
-	unsigned long	flags;
-
-	spin_lock_irqsave(&fotg210->lock, flags);
-
-	fotg210_init(fotg210);
-	fotg210->driver = NULL;
-
-	spin_unlock_irqrestore(&fotg210->lock, flags);
-
-	return 0;
-}
-
-static struct usb_gadget_ops fotg210_gadget_ops = {
-	.udc_start		= fotg210_udc_start,
-	.udc_stop		= fotg210_udc_stop,
-};
-
-static int fotg210_udc_remove(struct platform_device *pdev)
-{
-	struct fotg210_udc *fotg210 = platform_get_drvdata(pdev);
-
-	usb_del_gadget_udc(&fotg210->gadget);
-	iounmap(fotg210->reg);
-	free_irq(platform_get_irq(pdev, 0), fotg210);
-
-	fotg210_ep_free_request(&fotg210->ep[0]->ep, fotg210->ep0_req);
-	kfree(fotg210);
-
-	return 0;
-}
-
-static int fotg210_udc_probe(struct platform_device *pdev)
-{
-	struct resource *res, *ires;
-	struct fotg210_udc *fotg210 = NULL;
-	struct fotg210_ep *_ep[FOTG210_MAX_NUM_EP];
-	int ret = 0;
-	int i;
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		pr_err("platform_get_resource error.\n");
-		return -ENODEV;
-	}
-
-	ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-	if (!ires) {
-		pr_err("platform_get_resource IORESOURCE_IRQ error.\n");
-		return -ENODEV;
-	}
-
-	ret = -ENOMEM;
-
-	/* initialize udc */
-	fotg210 = kzalloc(sizeof(struct fotg210_udc), GFP_KERNEL);
-	if (fotg210 == NULL)
-		goto err_alloc;
-
-	for (i = 0; i < FOTG210_MAX_NUM_EP; i++) {
-		_ep[i] = kzalloc(sizeof(struct fotg210_ep), GFP_KERNEL);
-		if (_ep[i] == NULL)
-			goto err_alloc;
-		fotg210->ep[i] = _ep[i];
-	}
-
-	fotg210->reg = ioremap(res->start, resource_size(res));
-	if (fotg210->reg == NULL) {
-		pr_err("ioremap error.\n");
-		goto err_map;
-	}
-
-	spin_lock_init(&fotg210->lock);
-
-	platform_set_drvdata(pdev, fotg210);
-
-	fotg210->gadget.ops = &fotg210_gadget_ops;
-
-	fotg210->gadget.max_speed = USB_SPEED_HIGH;
-	fotg210->gadget.dev.parent = &pdev->dev;
-	fotg210->gadget.dev.dma_mask = pdev->dev.dma_mask;
-	fotg210->gadget.name = udc_name;
-
-	INIT_LIST_HEAD(&fotg210->gadget.ep_list);
-
-	for (i = 0; i < FOTG210_MAX_NUM_EP; i++) {
-		struct fotg210_ep *ep = fotg210->ep[i];
-
-		if (i) {
-			INIT_LIST_HEAD(&fotg210->ep[i]->ep.ep_list);
-			list_add_tail(&fotg210->ep[i]->ep.ep_list,
-				      &fotg210->gadget.ep_list);
-		}
-		ep->fotg210 = fotg210;
-		INIT_LIST_HEAD(&ep->queue);
-		ep->ep.name = fotg210_ep_name[i];
-		ep->ep.ops = &fotg210_ep_ops;
-		usb_ep_set_maxpacket_limit(&ep->ep, (unsigned short) ~0);
-	}
-	usb_ep_set_maxpacket_limit(&fotg210->ep[0]->ep, 0x40);
-	fotg210->gadget.ep0 = &fotg210->ep[0]->ep;
-	INIT_LIST_HEAD(&fotg210->gadget.ep0->ep_list);
-
-	fotg210->ep0_req = fotg210_ep_alloc_request(&fotg210->ep[0]->ep,
-				GFP_KERNEL);
-	if (fotg210->ep0_req == NULL)
-		goto err_req;
-
-	fotg210_init(fotg210);
-
-	fotg210_disable_unplug(fotg210);
-
-	ret = request_irq(ires->start, fotg210_irq, IRQF_SHARED,
-			  udc_name, fotg210);
-	if (ret < 0) {
-		pr_err("request_irq error (%d)\n", ret);
-		goto err_irq;
-	}
-
-	ret = usb_add_gadget_udc(&pdev->dev, &fotg210->gadget);
-	if (ret)
-		goto err_add_udc;
-
-	dev_info(&pdev->dev, "version %s\n", DRIVER_VERSION);
-
-	return 0;
-
-err_add_udc:
-err_irq:
-	free_irq(ires->start, fotg210);
-
-err_req:
-	fotg210_ep_free_request(&fotg210->ep[0]->ep, fotg210->ep0_req);
-
-err_map:
-	if (fotg210->reg)
-		iounmap(fotg210->reg);
-
-err_alloc:
-	kfree(fotg210);
-
-	return ret;
-}
-
-static struct platform_driver fotg210_driver = {
-	.driver		= {
-		.name =	(char *)udc_name,
-		.owner	= THIS_MODULE,
-	},
-	.probe		= fotg210_udc_probe,
-	.remove		= fotg210_udc_remove,
-};
-
-module_platform_driver(fotg210_driver);
-
-MODULE_AUTHOR("Yuan-Hsin Chen, Feng-Hsin Chiang <john453@faraday-tech.com>");
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION(DRIVER_DESC);