arm: pxa: Remove CONFIG_CPU_PXA25X

There are no platforms that set this, remove the code.

Signed-off-by: Tom Rini <trini@konsulko.com>

3 files changed, 0 insertions, 2199 deletions

diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile
index d5d891b2053..d8de8efa0a4 100644
--- a/drivers/usb/gadget/Makefile
+++ b/drivers/usb/gadget/Makefile
@@ -37,7 +37,6 @@ ifdef CONFIG_USB_ETHER
 obj-y += ether.o
 obj-$(CONFIG_USB_ETH_RNDIS) += rndis.o
 obj-$(CONFIG_CI_UDC)	+= ci_udc.o
-obj-$(CONFIG_CPU_PXA25X) += pxa25x_udc.o
 else
 # Devices not related to the new gadget layer depend on CONFIG_USB_DEVICE
 ifdef CONFIG_USB_DEVICE
diff --git a/drivers/usb/gadget/pxa25x_udc.c b/drivers/usb/gadget/pxa25x_udc.c
deleted file mode 100644
index d19ac1d0353..00000000000
--- a/drivers/usb/gadget/pxa25x_udc.c
+++ /dev/null
@@ -1,2049 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Intel PXA25x and IXP4xx on-chip full speed USB device controllers
- *
- * Copyright (C) 2002 Intrinsyc, Inc. (Frank Becker)
- * Copyright (C) 2003 Robert Schwebel, Pengutronix
- * Copyright (C) 2003 Benedikt Spranger, Pengutronix
- * Copyright (C) 2003 David Brownell
- * Copyright (C) 2003 Joshua Wise
- * Copyright (C) 2012 Lukasz Dalek <luk0104@gmail.com>
- *
- * MODULE_AUTHOR("Frank Becker, Robert Schwebel, David Brownell");
- */
-
-#define CONFIG_USB_PXA25X_SMALL
-#define DRIVER_NAME "pxa25x_udc_linux"
-#define ARCH_HAS_PREFETCH
-
-#include <common.h>
-#include <errno.h>
-#include <log.h>
-#include <asm/byteorder.h>
-#include <asm/system.h>
-#include <asm/mach-types.h>
-#include <asm/unaligned.h>
-#include <dm/devres.h>
-#include <linux/bug.h>
-#include <linux/compat.h>
-#include <malloc.h>
-#include <asm/io.h>
-#include <asm/arch/pxa.h>
-#include <linux/delay.h>
-
-#include <linux/usb/ch9.h>
-#include <linux/usb/gadget.h>
-#include <asm/arch/pxa-regs.h>
-
-#include "pxa25x_udc.h"
-
-/*
- * This driver handles the USB Device Controller (UDC) in Intel's PXA 25x
- * series processors.  The UDC for the IXP 4xx series is very similar.
- * There are fifteen endpoints, in addition to ep0.
- *
- * Such controller drivers work with a gadget driver.  The gadget driver
- * returns descriptors, implements configuration and data protocols used
- * by the host to interact with this device, and allocates endpoints to
- * the different protocol interfaces.  The controller driver virtualizes
- * usb hardware so that the gadget drivers will be more portable.
- *
- * This UDC hardware wants to implement a bit too much USB protocol, so
- * it constrains the sorts of USB configuration change events that work.
- * The errata for these chips are misleading; some "fixed" bugs from
- * pxa250 a0/a1 b0/b1/b2 sure act like they're still there.
- *
- * Note that the UDC hardware supports DMA (except on IXP) but that's
- * not used here.  IN-DMA (to host) is simple enough, when the data is
- * suitably aligned (16 bytes) ... the network stack doesn't do that,
- * other software can.  OUT-DMA is buggy in most chip versions, as well
- * as poorly designed (data toggle not automatic).  So this driver won't
- * bother using DMA.  (Mostly-working IN-DMA support was available in
- * kernels before 2.6.23, but was never enabled or well tested.)
- */
-
-#define DRIVER_VERSION	"18-August-2012"
-#define DRIVER_DESC	"PXA 25x USB Device Controller driver"
-
-static const char driver_name[] = "pxa25x_udc";
-static const char ep0name[] = "ep0";
-
-/* Watchdog */
-static inline void start_watchdog(struct pxa25x_udc *udc)
-{
-	debug("Started watchdog\n");
-	udc->watchdog.base = get_timer(0);
-	udc->watchdog.running = 1;
-}
-
-static inline void stop_watchdog(struct pxa25x_udc *udc)
-{
-	udc->watchdog.running = 0;
-	debug("Stopped watchdog\n");
-}
-
-static inline void test_watchdog(struct pxa25x_udc *udc)
-{
-	if (!udc->watchdog.running)
-		return;
-
-	debug("watchdog %ld %ld\n", get_timer(udc->watchdog.base),
-		udc->watchdog.period);
-
-	if (get_timer(udc->watchdog.base) >= udc->watchdog.period) {
-		stop_watchdog(udc);
-		udc->watchdog.function(udc);
-	}
-}
-
-static void udc_watchdog(struct pxa25x_udc *dev)
-{
-	uint32_t udccs0 = readl(&dev->regs->udccs[0]);
-
-	debug("Fired up udc_watchdog\n");
-
-	local_irq_disable();
-	if (dev->ep0state == EP0_STALL
-			&& (udccs0 & UDCCS0_FST) == 0
-			&& (udccs0 & UDCCS0_SST) == 0) {
-		writel(UDCCS0_FST|UDCCS0_FTF, &dev->regs->udccs[0]);
-		debug("ep0 re-stall\n");
-		start_watchdog(dev);
-	}
-	local_irq_enable();
-}
-
-#ifdef DEBUG
-
-static const char * const state_name[] = {
-	"EP0_IDLE",
-	"EP0_IN_DATA_PHASE", "EP0_OUT_DATA_PHASE",
-	"EP0_END_XFER", "EP0_STALL"
-};
-
-static void
-dump_udccr(const char *label)
-{
-	u32 udccr = readl(&UDC_REGS->udccr);
-	debug("%s %02X =%s%s%s%s%s%s%s%s\n",
-		label, udccr,
-		(udccr & UDCCR_REM) ? " rem" : "",
-		(udccr & UDCCR_RSTIR) ? " rstir" : "",
-		(udccr & UDCCR_SRM) ? " srm" : "",
-		(udccr & UDCCR_SUSIR) ? " susir" : "",
-		(udccr & UDCCR_RESIR) ? " resir" : "",
-		(udccr & UDCCR_RSM) ? " rsm" : "",
-		(udccr & UDCCR_UDA) ? " uda" : "",
-		(udccr & UDCCR_UDE) ? " ude" : "");
-}
-
-static void
-dump_udccs0(const char *label)
-{
-	u32 udccs0 = readl(&UDC_REGS->udccs[0]);
-
-	debug("%s %s %02X =%s%s%s%s%s%s%s%s\n",
-		label, state_name[the_controller->ep0state], udccs0,
-		(udccs0 & UDCCS0_SA) ? " sa" : "",
-		(udccs0 & UDCCS0_RNE) ? " rne" : "",
-		(udccs0 & UDCCS0_FST) ? " fst" : "",
-		(udccs0 & UDCCS0_SST) ? " sst" : "",
-		(udccs0 & UDCCS0_DRWF) ? " dwrf" : "",
-		(udccs0 & UDCCS0_FTF) ? " ftf" : "",
-		(udccs0 & UDCCS0_IPR) ? " ipr" : "",
-		(udccs0 & UDCCS0_OPR) ? " opr" : "");
-}
-
-static void
-dump_state(struct pxa25x_udc *dev)
-{
-	u32 tmp;
-	unsigned i;
-
-	debug("%s, uicr %02X.%02X, usir %02X.%02x, ufnr %02X.%02X\n",
-		state_name[dev->ep0state],
-		readl(&UDC_REGS->uicr1), readl(&UDC_REGS->uicr0),
-		readl(&UDC_REGS->usir1), readl(&UDC_REGS->usir0),
-		readl(&UDC_REGS->ufnrh), readl(&UDC_REGS->ufnrl));
-	dump_udccr("udccr");
-	if (dev->has_cfr) {
-		tmp = readl(&UDC_REGS->udccfr);
-		debug("udccfr %02X =%s%s\n", tmp,
-			(tmp & UDCCFR_AREN) ? " aren" : "",
-			(tmp & UDCCFR_ACM) ? " acm" : "");
-	}
-
-	if (!dev->driver) {
-		debug("no gadget driver bound\n");
-		return;
-	} else
-		debug("ep0 driver '%s'\n", "ether");
-
-	dump_udccs0("udccs0");
-	debug("ep0 IN %lu/%lu, OUT %lu/%lu\n",
-		dev->stats.write.bytes, dev->stats.write.ops,
-		dev->stats.read.bytes, dev->stats.read.ops);
-
-	for (i = 1; i < PXA_UDC_NUM_ENDPOINTS; i++) {
-		if (dev->ep[i].desc == NULL)
-			continue;
-		debug("udccs%d = %02x\n", i, *dev->ep->reg_udccs);
-	}
-}
-
-#else /* DEBUG */
-
-static inline void dump_udccr(const char *label) { }
-static inline void dump_udccs0(const char *label) { }
-static inline void dump_state(struct pxa25x_udc *dev) { }
-
-#endif /* DEBUG */
-
-/*
- * ---------------------------------------------------------------------------
- *	endpoint related parts of the api to the usb controller hardware,
- *	used by gadget driver; and the inner talker-to-hardware core.
- * ---------------------------------------------------------------------------
- */
-
-static void pxa25x_ep_fifo_flush(struct usb_ep *ep);
-static void nuke(struct pxa25x_ep *, int status);
-
-/* one GPIO should control a D+ pullup, so host sees this device (or not) */
-static void pullup_off(void)
-{
-	struct pxa2xx_udc_mach_info *mach = the_controller->mach;
-
-	if (mach->udc_command)
-		mach->udc_command(PXA2XX_UDC_CMD_DISCONNECT);
-}
-
-static void pullup_on(void)
-{
-	struct pxa2xx_udc_mach_info *mach = the_controller->mach;
-
-	if (mach->udc_command)
-		mach->udc_command(PXA2XX_UDC_CMD_CONNECT);
-}
-
-static void pio_irq_enable(int bEndpointAddress)
-{
-	bEndpointAddress &= 0xf;
-	if (bEndpointAddress < 8) {
-		clrbits_le32(&the_controller->regs->uicr0,
-			1 << bEndpointAddress);
-	} else {
-		bEndpointAddress -= 8;
-		clrbits_le32(&the_controller->regs->uicr1,
-			1 << bEndpointAddress);
-	}
-}
-
-static void pio_irq_disable(int bEndpointAddress)
-{
-	bEndpointAddress &= 0xf;
-	if (bEndpointAddress < 8) {
-		setbits_le32(&the_controller->regs->uicr0,
-			1 << bEndpointAddress);
-	} else {
-		bEndpointAddress -= 8;
-		setbits_le32(&the_controller->regs->uicr1,
-			1 << bEndpointAddress);
-	}
-}
-
-static inline void udc_set_mask_UDCCR(int mask)
-{
-	/*
-	 * The UDCCR reg contains mask and interrupt status bits,
-	 * so using '|=' isn't safe as it may ack an interrupt.
-	 */
-	const uint32_t mask_bits = UDCCR_REM | UDCCR_SRM | UDCCR_UDE;
-
-	mask &= mask_bits;
-	clrsetbits_le32(&the_controller->regs->udccr, ~mask_bits, mask);
-}
-
-static inline void udc_clear_mask_UDCCR(int mask)
-{
-	const uint32_t mask_bits = UDCCR_REM | UDCCR_SRM | UDCCR_UDE;
-
-	mask = ~mask & mask_bits;
-	clrbits_le32(&the_controller->regs->udccr, ~mask);
-}
-
-static inline void udc_ack_int_UDCCR(int mask)
-{
-	const uint32_t mask_bits = UDCCR_REM | UDCCR_SRM | UDCCR_UDE;
-
-	mask &= ~mask_bits;
-	clrsetbits_le32(&the_controller->regs->udccr, ~mask_bits, mask);
-}
-
-/*
- * endpoint enable/disable
- *
- * we need to verify the descriptors used to enable endpoints.  since pxa25x
- * endpoint configurations are fixed, and are pretty much always enabled,
- * there's not a lot to manage here.
- *
- * because pxa25x can't selectively initialize bulk (or interrupt) endpoints,
- * (resetting endpoint halt and toggle), SET_INTERFACE is unusable except
- * for a single interface (with only the default altsetting) and for gadget
- * drivers that don't halt endpoints (not reset by set_interface).  that also
- * means that if you use ISO, you must violate the USB spec rule that all
- * iso endpoints must be in non-default altsettings.
- */
-static int pxa25x_ep_enable(struct usb_ep *_ep,
-		const struct usb_endpoint_descriptor *desc)
-{
-	struct pxa25x_ep *ep;
-	struct pxa25x_udc *dev;
-
-	ep = container_of(_ep, struct pxa25x_ep, ep);
-	if (!_ep || !desc || ep->desc || _ep->name == ep0name
-			|| desc->bDescriptorType != USB_DT_ENDPOINT
-			|| ep->bEndpointAddress != desc->bEndpointAddress
-			|| ep->fifo_size <
-			   le16_to_cpu(get_unaligned(&desc->wMaxPacketSize))) {
-		printf("%s, bad ep or descriptor\n", __func__);
-		return -EINVAL;
-	}
-
-	/* xfer types must match, except that interrupt ~= bulk */
-	if (ep->bmAttributes != desc->bmAttributes
-			&& ep->bmAttributes != USB_ENDPOINT_XFER_BULK
-			&& desc->bmAttributes != USB_ENDPOINT_XFER_INT) {
-		printf("%s, %s type mismatch\n", __func__, _ep->name);
-		return -EINVAL;
-	}
-
-	/* hardware _could_ do smaller, but driver doesn't */
-	if ((desc->bmAttributes == USB_ENDPOINT_XFER_BULK
-			&& le16_to_cpu(get_unaligned(&desc->wMaxPacketSize))
-						!= BULK_FIFO_SIZE)
-			|| !get_unaligned(&desc->wMaxPacketSize)) {
-		printf("%s, bad %s maxpacket\n", __func__, _ep->name);
-		return -ERANGE;
-	}
-
-	dev = ep->dev;
-	if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN) {
-		printf("%s, bogus device state\n", __func__);
-		return -ESHUTDOWN;
-	}
-
-	ep->desc = desc;
-	ep->stopped = 0;
-	ep->pio_irqs = 0;
-	ep->ep.maxpacket = le16_to_cpu(get_unaligned(&desc->wMaxPacketSize));
-
-	/* flush fifo (mostly for OUT buffers) */
-	pxa25x_ep_fifo_flush(_ep);
-
-	/* ... reset halt state too, if we could ... */
-
-	debug("enabled %s\n", _ep->name);
-	return 0;
-}
-
-static int pxa25x_ep_disable(struct usb_ep *_ep)
-{
-	struct pxa25x_ep *ep;
-	unsigned long flags;
-
-	ep = container_of(_ep, struct pxa25x_ep, ep);
-	if (!_ep || !ep->desc) {
-		printf("%s, %s not enabled\n", __func__,
-			_ep ? ep->ep.name : NULL);
-		return -EINVAL;
-	}
-	local_irq_save(flags);
-
-	nuke(ep, -ESHUTDOWN);
-
-	/* flush fifo (mostly for IN buffers) */
-	pxa25x_ep_fifo_flush(_ep);
-
-	ep->desc = NULL;
-	ep->stopped = 1;
-
-	local_irq_restore(flags);
-	debug("%s disabled\n", _ep->name);
-	return 0;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * for the pxa25x, these can just wrap kmalloc/kfree.  gadget drivers
- * must still pass correctly initialized endpoints, since other controller
- * drivers may care about how it's currently set up (dma issues etc).
- */
-
-/*
- *	pxa25x_ep_alloc_request - allocate a request data structure
- */
-static struct usb_request *
-pxa25x_ep_alloc_request(struct usb_ep *_ep, gfp_t gfp_flags)
-{
-	struct pxa25x_request *req;
-
-	req = kzalloc(sizeof(*req), gfp_flags);
-	if (!req)
-		return NULL;
-
-	INIT_LIST_HEAD(&req->queue);
-	return &req->req;
-}
-
-
-/*
- *	pxa25x_ep_free_request - deallocate a request data structure
- */
-static void
-pxa25x_ep_free_request(struct usb_ep *_ep, struct usb_request *_req)
-{
-	struct pxa25x_request	*req;
-
-	req = container_of(_req, struct pxa25x_request, req);
-	WARN_ON(!list_empty(&req->queue));
-	kfree(req);
-}
-
-/*-------------------------------------------------------------------------*/
-
-/*
- *	done - retire a request; caller blocked irqs
- */
-static void done(struct pxa25x_ep *ep, struct pxa25x_request *req, int status)
-{
-	unsigned stopped = ep->stopped;
-
-	list_del_init(&req->queue);
-
-	if (likely(req->req.status == -EINPROGRESS))
-		req->req.status = status;
-	else
-		status = req->req.status;
-
-	if (status && status != -ESHUTDOWN)
-		debug("complete %s req %p stat %d len %u/%u\n",
-			ep->ep.name, &req->req, status,
-			req->req.actual, req->req.length);
-
-	/* don't modify queue heads during completion callback */
-	ep->stopped = 1;
-	req->req.complete(&ep->ep, &req->req);
-	ep->stopped = stopped;
-}
-
-
-static inline void ep0_idle(struct pxa25x_udc *dev)
-{
-	dev->ep0state = EP0_IDLE;
-}
-
-static int
-write_packet(u32 *uddr, struct pxa25x_request *req, unsigned max)
-{
-	u8 *buf;
-	unsigned length, count;
-
-	debug("%s(): uddr %p\n", __func__, uddr);
-
-	buf = req->req.buf + req->req.actual;
-	prefetch(buf);
-
-	/* how big will this packet be? */
-	length = min(req->req.length - req->req.actual, max);
-	req->req.actual += length;
-
-	count = length;
-	while (likely(count--))
-		writeb(*buf++, uddr);
-
-	return length;
-}
-
-/*
- * write to an IN endpoint fifo, as many packets as possible.
- * irqs will use this to write the rest later.
- * caller guarantees at least one packet buffer is ready (or a zlp).
- */
-static int
-write_fifo(struct pxa25x_ep *ep, struct pxa25x_request *req)
-{
-	unsigned max;
-
-	max = le16_to_cpu(get_unaligned(&ep->desc->wMaxPacketSize));
-	do {
-		unsigned count;
-		int is_last, is_short;
-
-		count = write_packet(ep->reg_uddr, req, max);
-
-		/* last packet is usually short (or a zlp) */
-		if (unlikely(count != max))
-			is_last = is_short = 1;
-		else {
-			if (likely(req->req.length != req->req.actual)
-					|| req->req.zero)
-				is_last = 0;
-			else
-				is_last = 1;
-			/* interrupt/iso maxpacket may not fill the fifo */
-			is_short = unlikely(max < ep->fifo_size);
-		}
-
-		debug_cond(NOISY, "wrote %s %d bytes%s%s %d left %p\n",
-			ep->ep.name, count,
-			is_last ? "/L" : "", is_short ? "/S" : "",
-			req->req.length - req->req.actual, req);
-
-		/*
-		 * let loose that packet. maybe try writing another one,
-		 * double buffering might work.  TSP, TPC, and TFS
-		 * bit values are the same for all normal IN endpoints.
-		 */
-		writel(UDCCS_BI_TPC, ep->reg_udccs);
-		if (is_short)
-			writel(UDCCS_BI_TSP, ep->reg_udccs);
-
-		/* requests complete when all IN data is in the FIFO */
-		if (is_last) {
-			done(ep, req, 0);
-			if (list_empty(&ep->queue))
-				pio_irq_disable(ep->bEndpointAddress);
-			return 1;
-		}
-
-		/*
-		 * TODO experiment: how robust can fifo mode tweaking be?
-		 * double buffering is off in the default fifo mode, which
-		 * prevents TFS from being set here.
-		 */
-
-	} while (readl(ep->reg_udccs) & UDCCS_BI_TFS);
-	return 0;
-}
-
-/*
- * caller asserts req->pending (ep0 irq status nyet cleared); starts
- * ep0 data stage.  these chips want very simple state transitions.
- */
-static inline
-void ep0start(struct pxa25x_udc *dev, u32 flags, const char *tag)
-{
-	writel(flags|UDCCS0_SA|UDCCS0_OPR, &dev->regs->udccs[0]);
-	writel(USIR0_IR0, &dev->regs->usir0);
-	dev->req_pending = 0;
-	debug_cond(NOISY, "%s() %s, udccs0: %02x/%02x usir: %X.%X\n",
-		__func__, tag, readl(&dev->regs->udccs[0]), flags,
-		readl(&dev->regs->usir1), readl(&dev->regs->usir0));
-}
-
-static int
-write_ep0_fifo(struct pxa25x_ep *ep, struct pxa25x_request *req)
-{
-	unsigned count;
-	int is_short;
-
-	count = write_packet(&ep->dev->regs->uddr0, req, EP0_FIFO_SIZE);
-	ep->dev->stats.write.bytes += count;
-
-	/* last packet "must be" short (or a zlp) */
-	is_short = (count != EP0_FIFO_SIZE);
-
-	debug_cond(NOISY, "ep0in %d bytes %d left %p\n", count,
-		req->req.length - req->req.actual, req);
-
-	if (unlikely(is_short)) {
-		if (ep->dev->req_pending)
-			ep0start(ep->dev, UDCCS0_IPR, "short IN");
-		else
-			writel(UDCCS0_IPR, &ep->dev->regs->udccs[0]);
-
-		count = req->req.length;
-		done(ep, req, 0);
-		ep0_idle(ep->dev);
-
-		/*
-		 * This seems to get rid of lost status irqs in some cases:
-		 * host responds quickly, or next request involves config
-		 * change automagic, or should have been hidden, or ...
-		 *
-		 * FIXME get rid of all udelays possible...
-		 */
-		if (count >= EP0_FIFO_SIZE) {
-			count = 100;
-			do {
-				if ((readl(&ep->dev->regs->udccs[0]) &
-				     UDCCS0_OPR) != 0) {
-					/* clear OPR, generate ack */
-					writel(UDCCS0_OPR,
-						&ep->dev->regs->udccs[0]);
-					break;
-				}
-				count--;
-				udelay(1);
-			} while (count);
-		}
-	} else if (ep->dev->req_pending)
-		ep0start(ep->dev, 0, "IN");
-
-	return is_short;
-}
-
-
-/*
- * read_fifo -  unload packet(s) from the fifo we use for usb OUT
- * transfers and put them into the request.  caller should have made
- * sure there's at least one packet ready.
- *
- * returns true if the request completed because of short packet or the
- * request buffer having filled (and maybe overran till end-of-packet).
- */
-static int
-read_fifo(struct pxa25x_ep *ep, struct pxa25x_request *req)
-{
-	u32 udccs;
-	u8 *buf;
-	unsigned bufferspace, count, is_short;
-
-	for (;;) {
-		/*
-		 * make sure there's a packet in the FIFO.
-		 * UDCCS_{BO,IO}_RPC are all the same bit value.
-		 * UDCCS_{BO,IO}_RNE are all the same bit value.
-		 */
-		udccs = readl(ep->reg_udccs);
-		if (unlikely((udccs & UDCCS_BO_RPC) == 0))
-			break;
-		buf = req->req.buf + req->req.actual;
-		prefetchw(buf);
-		bufferspace = req->req.length - req->req.actual;
-
-		/* read all bytes from this packet */
-		if (likely(udccs & UDCCS_BO_RNE)) {
-			count = 1 + (0x0ff & readl(ep->reg_ubcr));
-			req->req.actual += min(count, bufferspace);
-		} else /* zlp */
-			count = 0;
-		is_short = (count < ep->ep.maxpacket);
-		debug_cond(NOISY, "read %s %02x, %d bytes%s req %p %d/%d\n",
-			ep->ep.name, udccs, count,
-			is_short ? "/S" : "",
-			req, req->req.actual, req->req.length);
-		while (likely(count-- != 0)) {
-			u8 byte = readb(ep->reg_uddr);
-
-			if (unlikely(bufferspace == 0)) {
-				/*
-				 * this happens when the driver's buffer
-				 * is smaller than what the host sent.
-				 * discard the extra data.
-				 */
-				if (req->req.status != -EOVERFLOW)
-					printf("%s overflow %d\n",
-						ep->ep.name, count);
-				req->req.status = -EOVERFLOW;
-			} else {
-				*buf++ = byte;
-				bufferspace--;
-			}
-		}
-		writel(UDCCS_BO_RPC, ep->reg_udccs);
-		/* RPC/RSP/RNE could now reflect the other packet buffer */
-
-		/* iso is one request per packet */
-		if (ep->bmAttributes == USB_ENDPOINT_XFER_ISOC) {
-			if (udccs & UDCCS_IO_ROF)
-				req->req.status = -EHOSTUNREACH;
-			/* more like "is_done" */
-			is_short = 1;
-		}
-
-		/* completion */
-		if (is_short || req->req.actual == req->req.length) {
-			done(ep, req, 0);
-			if (list_empty(&ep->queue))
-				pio_irq_disable(ep->bEndpointAddress);
-			return 1;
-		}
-
-		/* finished that packet.  the next one may be waiting... */
-	}
-	return 0;
-}
-
-/*
- * special ep0 version of the above.  no UBCR0 or double buffering; status
- * handshaking is magic.  most device protocols don't need control-OUT.
- * CDC vendor commands (and RNDIS), mass storage CB/CBI, and some other
- * protocols do use them.
- */
-static int
-read_ep0_fifo(struct pxa25x_ep *ep, struct pxa25x_request *req)
-{
-	u8 *buf, byte;
-	unsigned bufferspace;
-
-	buf = req->req.buf + req->req.actual;
-	bufferspace = req->req.length - req->req.actual;
-
-	while (readl(&ep->dev->regs->udccs[0]) & UDCCS0_RNE) {
-		byte = (u8)readb(&ep->dev->regs->uddr0);
-
-		if (unlikely(bufferspace == 0)) {
-			/*
-			 * this happens when the driver's buffer
-			 * is smaller than what the host sent.
-			 * discard the extra data.
-			 */
-			if (req->req.status != -EOVERFLOW)
-				printf("%s overflow\n", ep->ep.name);
-			req->req.status = -EOVERFLOW;
-		} else {
-			*buf++ = byte;
-			req->req.actual++;
-			bufferspace--;
-		}
-	}
-
-	writel(UDCCS0_OPR | UDCCS0_IPR, &ep->dev->regs->udccs[0]);
-
-	/* completion */
-	if (req->req.actual >= req->req.length)
-		return 1;
-
-	/* finished that packet.  the next one may be waiting... */
-	return 0;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static int
-pxa25x_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
-{
-	struct pxa25x_request *req;
-	struct pxa25x_ep *ep;
-	struct pxa25x_udc *dev;
-	unsigned long flags;
-
-	req = container_of(_req, struct pxa25x_request, req);
-	if (unlikely(!_req || !_req->complete || !_req->buf
-			|| !list_empty(&req->queue))) {
-		printf("%s, bad params\n", __func__);
-		return -EINVAL;
-	}
-
-	ep = container_of(_ep, struct pxa25x_ep, ep);
-	if (unlikely(!_ep || (!ep->desc && ep->ep.name != ep0name))) {
-		printf("%s, bad ep\n", __func__);
-		return -EINVAL;
-	}
-
-	dev = ep->dev;
-	if (unlikely(!dev->driver
-			|| dev->gadget.speed == USB_SPEED_UNKNOWN)) {
-		printf("%s, bogus device state\n", __func__);
-		return -ESHUTDOWN;
-	}
-
-	/*
-	 * iso is always one packet per request, that's the only way
-	 * we can report per-packet status.  that also helps with dma.
-	 */
-	if (unlikely(ep->bmAttributes == USB_ENDPOINT_XFER_ISOC
-			&& req->req.length >
-			le16_to_cpu(get_unaligned(&ep->desc->wMaxPacketSize))))
-		return -EMSGSIZE;
-
-	debug_cond(NOISY, "%s queue req %p, len %d buf %p\n",
-		_ep->name, _req, _req->length, _req->buf);
-
-	local_irq_save(flags);
-
-	_req->status = -EINPROGRESS;
-	_req->actual = 0;
-
-	/* kickstart this i/o queue? */
-	if (list_empty(&ep->queue) && !ep->stopped) {
-		if (ep->desc == NULL/* ep0 */) {
-			unsigned length = _req->length;
-
-			switch (dev->ep0state) {
-			case EP0_IN_DATA_PHASE:
-				dev->stats.write.ops++;
-				if (write_ep0_fifo(ep, req))
-					req = NULL;
-				break;
-
-			case EP0_OUT_DATA_PHASE:
-				dev->stats.read.ops++;
-				/* messy ... */
-				if (dev->req_config) {
-					debug("ep0 config ack%s\n",
-						dev->has_cfr ?  "" : " raced");
-					if (dev->has_cfr)
-						writel(UDCCFR_AREN|UDCCFR_ACM
-							|UDCCFR_MB1,
-							&ep->dev->regs->udccfr);
-					done(ep, req, 0);
-					dev->ep0state = EP0_END_XFER;
-					local_irq_restore(flags);
-					return 0;
-				}
-				if (dev->req_pending)
-					ep0start(dev, UDCCS0_IPR, "OUT");
-				if (length == 0 ||
-						((readl(
-						&ep->dev->regs->udccs[0])
-						& UDCCS0_RNE) != 0
-						&& read_ep0_fifo(ep, req))) {
-					ep0_idle(dev);
-					done(ep, req, 0);
-					req = NULL;
-				}
-				break;
-
-			default:
-				printf("ep0 i/o, odd state %d\n",
-					dev->ep0state);
-				local_irq_restore(flags);
-				return -EL2HLT;
-			}
-		/* can the FIFO can satisfy the request immediately? */
-		} else if ((ep->bEndpointAddress & USB_DIR_IN) != 0) {
-			if ((readl(ep->reg_udccs) & UDCCS_BI_TFS) != 0
-					&& write_fifo(ep, req))
-				req = NULL;
-		} else if ((readl(ep->reg_udccs) & UDCCS_BO_RFS) != 0
-				&& read_fifo(ep, req)) {
-			req = NULL;
-		}
-
-		if (likely(req && ep->desc))
-			pio_irq_enable(ep->bEndpointAddress);
-	}
-
-	/* pio or dma irq handler advances the queue. */
-	if (likely(req != NULL))
-		list_add_tail(&req->queue, &ep->queue);
-	local_irq_restore(flags);
-
-	return 0;
-}
-
-
-/*
- *	nuke - dequeue ALL requests
- */
-static void nuke(struct pxa25x_ep *ep, int status)
-{
-	struct pxa25x_request *req;
-
-	/* called with irqs blocked */
-	while (!list_empty(&ep->queue)) {
-		req = list_entry(ep->queue.next,
-				struct pxa25x_request,
-				queue);
-		done(ep, req, status);
-	}
-	if (ep->desc)
-		pio_irq_disable(ep->bEndpointAddress);
-}
-
-
-/* dequeue JUST ONE request */
-static int pxa25x_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req)
-{
-	struct pxa25x_ep *ep;
-	struct pxa25x_request *req;
-	unsigned long flags;
-
-	ep = container_of(_ep, struct pxa25x_ep, ep);
-	if (!_ep || ep->ep.name == ep0name)
-		return -EINVAL;
-
-	local_irq_save(flags);
-
-	/* make sure it's actually queued on this endpoint */
-	list_for_each_entry(req, &ep->queue, queue) {
-		if (&req->req == _req)
-			break;
-	}
-	if (&req->req != _req) {
-		local_irq_restore(flags);
-		return -EINVAL;
-	}
-
-	done(ep, req, -ECONNRESET);
-
-	local_irq_restore(flags);
-	return 0;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static int pxa25x_ep_set_halt(struct usb_ep *_ep, int value)
-{
-	struct pxa25x_ep *ep;
-	unsigned long flags;
-
-	ep = container_of(_ep, struct pxa25x_ep, ep);
-	if (unlikely(!_ep
-			|| (!ep->desc && ep->ep.name != ep0name))
-			|| ep->bmAttributes == USB_ENDPOINT_XFER_ISOC) {
-		printf("%s, bad ep\n", __func__);
-		return -EINVAL;
-	}
-	if (value == 0) {
-		/*
-		 * this path (reset toggle+halt) is needed to implement
-		 * SET_INTERFACE on normal hardware.  but it can't be
-		 * done from software on the PXA UDC, and the hardware
-		 * forgets to do it as part of SET_INTERFACE automagic.
-		 */
-		printf("only host can clear %s halt\n", _ep->name);
-		return -EROFS;
-	}
-
-	local_irq_save(flags);
-
-	if ((ep->bEndpointAddress & USB_DIR_IN) != 0
-			&& ((readl(ep->reg_udccs) & UDCCS_BI_TFS) == 0
-			   || !list_empty(&ep->queue))) {
-		local_irq_restore(flags);
-		return -EAGAIN;
-	}
-
-	/* FST bit is the same for control, bulk in, bulk out, interrupt in */
-	writel(UDCCS_BI_FST|UDCCS_BI_FTF, ep->reg_udccs);
-
-	/* ep0 needs special care */
-	if (!ep->desc) {
-		start_watchdog(ep->dev);
-		ep->dev->req_pending = 0;
-		ep->dev->ep0state = EP0_STALL;
-
-	/* and bulk/intr endpoints like dropping stalls too */
-	} else {
-		unsigned i;
-		for (i = 0; i < 1000; i += 20) {
-			if (readl(ep->reg_udccs) & UDCCS_BI_SST)
-				break;
-			udelay(20);
-		}
-	}
-	local_irq_restore(flags);
-
-	debug("%s halt\n", _ep->name);
-	return 0;
-}
-
-static int pxa25x_ep_fifo_status(struct usb_ep *_ep)
-{
-	struct pxa25x_ep        *ep;
-
-	ep = container_of(_ep, struct pxa25x_ep, ep);
-	if (!_ep) {
-		printf("%s, bad ep\n", __func__);
-		return -ENODEV;
-	}
-	/* pxa can't report unclaimed bytes from IN fifos */
-	if ((ep->bEndpointAddress & USB_DIR_IN) != 0)
-		return -EOPNOTSUPP;
-	if (ep->dev->gadget.speed == USB_SPEED_UNKNOWN
-			|| (readl(ep->reg_udccs) & UDCCS_BO_RFS) == 0)
-		return 0;
-	else
-		return (readl(ep->reg_ubcr) & 0xfff) + 1;
-}
-
-static void pxa25x_ep_fifo_flush(struct usb_ep *_ep)
-{
-	struct pxa25x_ep        *ep;
-
-	ep = container_of(_ep, struct pxa25x_ep, ep);
-	if (!_ep || ep->ep.name == ep0name || !list_empty(&ep->queue)) {
-		printf("%s, bad ep\n", __func__);
-		return;
-	}
-
-	/* toggle and halt bits stay unchanged */
-
-	/* for OUT, just read and discard the FIFO contents. */
-	if ((ep->bEndpointAddress & USB_DIR_IN) == 0) {
-		while (((readl(ep->reg_udccs)) & UDCCS_BO_RNE) != 0)
-			(void)readb(ep->reg_uddr);
-		return;
-	}
-
-	/* most IN status is the same, but ISO can't stall */
-	writel(UDCCS_BI_TPC|UDCCS_BI_FTF|UDCCS_BI_TUR
-		| (ep->bmAttributes == USB_ENDPOINT_XFER_ISOC
-			? 0 : UDCCS_BI_SST), ep->reg_udccs);
-}
-
-
-static struct usb_ep_ops pxa25x_ep_ops = {
-	.enable		= pxa25x_ep_enable,
-	.disable	= pxa25x_ep_disable,
-
-	.alloc_request	= pxa25x_ep_alloc_request,
-	.free_request	= pxa25x_ep_free_request,
-
-	.queue		= pxa25x_ep_queue,
-	.dequeue	= pxa25x_ep_dequeue,
-
-	.set_halt	= pxa25x_ep_set_halt,
-	.fifo_status	= pxa25x_ep_fifo_status,
-	.fifo_flush	= pxa25x_ep_fifo_flush,
-};
-
-
-/* ---------------------------------------------------------------------------
- *	device-scoped parts of the api to the usb controller hardware
- * ---------------------------------------------------------------------------
- */
-
-static int pxa25x_udc_get_frame(struct usb_gadget *_gadget)
-{
-	return ((readl(&the_controller->regs->ufnrh) & 0x07) << 8) |
-		(readl(&the_controller->regs->ufnrl) & 0xff);
-}
-
-static int pxa25x_udc_wakeup(struct usb_gadget *_gadget)
-{
-	/* host may not have enabled remote wakeup */
-	if ((readl(&the_controller->regs->udccs[0]) & UDCCS0_DRWF) == 0)
-		return -EHOSTUNREACH;
-	udc_set_mask_UDCCR(UDCCR_RSM);
-	return 0;
-}
-
-static void stop_activity(struct pxa25x_udc *, struct usb_gadget_driver *);
-static void udc_enable(struct pxa25x_udc *);
-static void udc_disable(struct pxa25x_udc *);
-
-/*
- * We disable the UDC -- and its 48 MHz clock -- whenever it's not
- * in active use.
- */
-static int pullup(struct pxa25x_udc *udc)
-{
-	if (udc->pullup)
-		pullup_on();
-	else
-		pullup_off();
-
-
-	int is_active = udc->pullup;
-	if (is_active) {
-		if (!udc->active) {
-			udc->active = 1;
-			udc_enable(udc);
-		}
-	} else {
-		if (udc->active) {
-			if (udc->gadget.speed != USB_SPEED_UNKNOWN)
-				stop_activity(udc, udc->driver);
-			udc_disable(udc);
-			udc->active = 0;
-		}
-
-	}
-	return 0;
-}
-
-/* VBUS reporting logically comes from a transceiver */
-static int pxa25x_udc_vbus_session(struct usb_gadget *_gadget, int is_active)
-{
-	struct pxa25x_udc *udc;
-
-	udc = container_of(_gadget, struct pxa25x_udc, gadget);
-	printf("vbus %s\n", is_active ? "supplied" : "inactive");
-	pullup(udc);
-	return 0;
-}
-
-/* drivers may have software control over D+ pullup */
-static int pxa25x_udc_pullup(struct usb_gadget *_gadget, int is_active)
-{
-	struct pxa25x_udc	*udc;
-
-	udc = container_of(_gadget, struct pxa25x_udc, gadget);
-
-	/* not all boards support pullup control */
-	if (!udc->mach->udc_command)
-		return -EOPNOTSUPP;
-
-	udc->pullup = (is_active != 0);
-	pullup(udc);
-	return 0;
-}
-
-/*
- * boards may consume current from VBUS, up to 100-500mA based on config.
- * the 500uA suspend ceiling means that exclusively vbus-powered PXA designs
- * violate USB specs.
- */
-static int pxa25x_udc_vbus_draw(struct usb_gadget *_gadget, unsigned mA)
-{
-	return -EOPNOTSUPP;
-}
-
-static const struct usb_gadget_ops pxa25x_udc_ops = {
-	.get_frame	= pxa25x_udc_get_frame,
-	.wakeup		= pxa25x_udc_wakeup,
-	.vbus_session	= pxa25x_udc_vbus_session,
-	.pullup		= pxa25x_udc_pullup,
-	.vbus_draw	= pxa25x_udc_vbus_draw,
-};
-
-/*-------------------------------------------------------------------------*/
-
-/*
- *	udc_disable - disable USB device controller
- */
-static void udc_disable(struct pxa25x_udc *dev)
-{
-	/* block all irqs */
-	udc_set_mask_UDCCR(UDCCR_SRM|UDCCR_REM);
-	writel(0xff, &dev->regs->uicr0);
-	writel(0xff, &dev->regs->uicr1);
-	writel(UFNRH_SIM, &dev->regs->ufnrh);
-
-	/* if hardware supports it, disconnect from usb */
-	pullup_off();
-
-	udc_clear_mask_UDCCR(UDCCR_UDE);
-
-	ep0_idle(dev);
-	dev->gadget.speed = USB_SPEED_UNKNOWN;
-}
-
-/*
- *	udc_reinit - initialize software state
- */
-static void udc_reinit(struct pxa25x_udc *dev)
-{
-	u32 i;
-
-	/* device/ep0 records init */
-	INIT_LIST_HEAD(&dev->gadget.ep_list);
-	INIT_LIST_HEAD(&dev->gadget.ep0->ep_list);
-	dev->ep0state = EP0_IDLE;
-
-	/* basic endpoint records init */
-	for (i = 0; i < PXA_UDC_NUM_ENDPOINTS; i++) {
-		struct pxa25x_ep *ep = &dev->ep[i];
-
-		if (i != 0)
-			list_add_tail(&ep->ep.ep_list, &dev->gadget.ep_list);
-
-		ep->desc = NULL;
-		ep->stopped = 0;
-		INIT_LIST_HEAD(&ep->queue);
-		ep->pio_irqs = 0;
-	}
-
-	/* the rest was statically initialized, and is read-only */
-}
-
-/*
- * until it's enabled, this UDC should be completely invisible
- * to any USB host.
- */
-static void udc_enable(struct pxa25x_udc *dev)
-{
-	debug("udc: enabling udc\n");
-
-	udc_clear_mask_UDCCR(UDCCR_UDE);
-
-	/*
-	 * Try to clear these bits before we enable the udc.
-	 * Do not touch reset ack bit, we would take care of it in
-	 * interrupt handle routine
-	 */
-	udc_ack_int_UDCCR(UDCCR_SUSIR|UDCCR_RESIR);
-
-	ep0_idle(dev);
-	dev->gadget.speed = USB_SPEED_UNKNOWN;
-	dev->stats.irqs = 0;
-
-	/*
-	 * sequence taken from chapter 12.5.10, PXA250 AppProcDevManual:
-	 * - enable UDC
-	 * - if RESET is already in progress, ack interrupt
-	 * - unmask reset interrupt
-	 */
-	udc_set_mask_UDCCR(UDCCR_UDE);
-	if (!(readl(&dev->regs->udccr) & UDCCR_UDA))
-		udc_ack_int_UDCCR(UDCCR_RSTIR);
-
-	if (dev->has_cfr /* UDC_RES2 is defined */) {
-		/*
-		 * pxa255 (a0+) can avoid a set_config race that could
-		 * prevent gadget drivers from configuring correctly
-		 */
-		writel(UDCCFR_ACM | UDCCFR_MB1, &dev->regs->udccfr);
-	}
-
-	/* enable suspend/resume and reset irqs */
-	udc_clear_mask_UDCCR(UDCCR_SRM | UDCCR_REM);
-
-	/* enable ep0 irqs */
-	clrbits_le32(&dev->regs->uicr0, UICR0_IM0);
-
-	/* if hardware supports it, pullup D+ and wait for reset */
-	pullup_on();
-}
-
-static inline void clear_ep_state(struct pxa25x_udc *dev)
-{
-	unsigned i;
-
-	/*
-	 * hardware SET_{CONFIGURATION,INTERFACE} automagic resets endpoint
-	 * fifos, and pending transactions mustn't be continued in any case.
-	 */
-	for (i = 1; i < PXA_UDC_NUM_ENDPOINTS; i++)
-		nuke(&dev->ep[i], -ECONNABORTED);
-}
-
-static void handle_ep0(struct pxa25x_udc *dev)
-{
-	u32 udccs0 = readl(&dev->regs->udccs[0]);
-	struct pxa25x_ep *ep = &dev->ep[0];
-	struct pxa25x_request *req;
-	union {
-		struct usb_ctrlrequest	r;
-		u8			raw[8];
-		u32			word[2];
-	} u;
-
-	if (list_empty(&ep->queue))
-		req = NULL;
-	else
-		req = list_entry(ep->queue.next, struct pxa25x_request, queue);
-
-	/* clear stall status */
-	if (udccs0 & UDCCS0_SST) {
-		nuke(ep, -EPIPE);
-		writel(UDCCS0_SST, &dev->regs->udccs[0]);
-		stop_watchdog(dev);
-		ep0_idle(dev);
-	}
-
-	/* previous request unfinished?  non-error iff back-to-back ... */
-	if ((udccs0 & UDCCS0_SA) != 0 && dev->ep0state != EP0_IDLE) {
-		nuke(ep, 0);
-		stop_watchdog(dev);
-		ep0_idle(dev);
-	}
-
-	switch (dev->ep0state) {
-	case EP0_IDLE:
-		/* late-breaking status? */
-		udccs0 = readl(&dev->regs->udccs[0]);
-
-		/* start control request? */
-		if (likely((udccs0 & (UDCCS0_OPR|UDCCS0_SA|UDCCS0_RNE))
-				== (UDCCS0_OPR|UDCCS0_SA|UDCCS0_RNE))) {
-			int i;
-
-			nuke(ep, -EPROTO);
-
-			/* read SETUP packet */
-			for (i = 0; i < 8; i++) {
-				if (unlikely(!(readl(&dev->regs->udccs[0]) &
-						UDCCS0_RNE))) {
-bad_setup:
-					debug("SETUP %d!\n", i);
-					goto stall;
-				}
-				u.raw[i] = (u8)readb(&dev->regs->uddr0);
-			}
-			if (unlikely((readl(&dev->regs->udccs[0]) &
-					UDCCS0_RNE) != 0))
-				goto bad_setup;
-
-got_setup:
-			debug("SETUP %02x.%02x v%04x i%04x l%04x\n",
-				u.r.bRequestType, u.r.bRequest,
-				le16_to_cpu(u.r.wValue),
-				le16_to_cpu(u.r.wIndex),
-				le16_to_cpu(u.r.wLength));
-
-			/* cope with automagic for some standard requests. */
-			dev->req_std = (u.r.bRequestType & USB_TYPE_MASK)
-						== USB_TYPE_STANDARD;
-			dev->req_config = 0;
-			dev->req_pending = 1;
-			switch (u.r.bRequest) {
-			/* hardware restricts gadget drivers here! */
-			case USB_REQ_SET_CONFIGURATION:
-				debug("GOT SET_CONFIGURATION\n");
-				if (u.r.bRequestType == USB_RECIP_DEVICE) {
-					/*
-					 * reflect hardware's automagic
-					 * up to the gadget driver.
-					 */
-config_change:
-					dev->req_config = 1;
-					clear_ep_state(dev);
-					/*
-					 * if !has_cfr, there's no synch
-					 * else use AREN (later) not SA|OPR
-					 * USIR0_IR0 acts edge sensitive
-					 */
-				}
-				break;
-			/* ... and here, even more ... */
-			case USB_REQ_SET_INTERFACE:
-				if (u.r.bRequestType == USB_RECIP_INTERFACE) {
-					/*
-					 * udc hardware is broken by design:
-					 *  - altsetting may only be zero;
-					 *  - hw resets all interfaces' eps;
-					 *  - ep reset doesn't include halt(?).
-					 */
-					printf("broken set_interface (%d/%d)\n",
-						le16_to_cpu(u.r.wIndex),
-						le16_to_cpu(u.r.wValue));
-					goto config_change;
-				}
-				break;
-			/* hardware was supposed to hide this */
-			case USB_REQ_SET_ADDRESS:
-				debug("GOT SET ADDRESS\n");
-				if (u.r.bRequestType == USB_RECIP_DEVICE) {
-					ep0start(dev, 0, "address");
-					return;
-				}
-				break;
-			}
-
-			if (u.r.bRequestType & USB_DIR_IN)
-				dev->ep0state = EP0_IN_DATA_PHASE;
-			else
-				dev->ep0state = EP0_OUT_DATA_PHASE;
-
-			i = dev->driver->setup(&dev->gadget, &u.r);
-			if (i < 0) {
-				/* hardware automagic preventing STALL... */
-				if (dev->req_config) {
-					/*
-					 * hardware sometimes neglects to tell
-					 * tell us about config change events,
-					 * so later ones may fail...
-					 */
-					printf("config change %02x fail %d?\n",
-						u.r.bRequest, i);
-					return;
-					/*
-					 * TODO experiment:  if has_cfr,
-					 * hardware didn't ACK; maybe we
-					 * could actually STALL!
-					 */
-				}
-				if (0) {
-stall:
-					/* uninitialized when goto stall */
-					i = 0;
-				}
-				debug("protocol STALL, "
-					"%02x err %d\n",
-					readl(&dev->regs->udccs[0]), i);
-
-				/*
-				 * the watchdog timer helps deal with cases
-				 * where udc seems to clear FST wrongly, and
-				 * then NAKs instead of STALLing.
-				 */
-				ep0start(dev, UDCCS0_FST|UDCCS0_FTF, "stall");
-				start_watchdog(dev);
-				dev->ep0state = EP0_STALL;
-
-			/* deferred i/o == no response yet */
-			} else if (dev->req_pending) {
-				if (likely(dev->ep0state == EP0_IN_DATA_PHASE
-						|| dev->req_std || u.r.wLength))
-					ep0start(dev, 0, "defer");
-				else
-					ep0start(dev, UDCCS0_IPR, "defer/IPR");
-			}
-
-			/* expect at least one data or status stage irq */
-			return;
-
-		} else if (likely((udccs0 & (UDCCS0_OPR|UDCCS0_SA))
-				== (UDCCS0_OPR|UDCCS0_SA))) {
-			unsigned i;
-
-			/*
-			 * pxa210/250 erratum 131 for B0/B1 says RNE lies.
-			 * still observed on a pxa255 a0.
-			 */
-			debug("e131\n");
-			nuke(ep, -EPROTO);
-
-			/* read SETUP data, but don't trust it too much */
-			for (i = 0; i < 8; i++)
-				u.raw[i] = (u8)readb(&dev->regs->uddr0);
-			if ((u.r.bRequestType & USB_RECIP_MASK)
-					> USB_RECIP_OTHER)
-				goto stall;
-			if (u.word[0] == 0 && u.word[1] == 0)
-				goto stall;
-			goto got_setup;
-		} else {
-			/*
-			 * some random early IRQ:
-			 * - we acked FST
-			 * - IPR cleared
-			 * - OPR got set, without SA (likely status stage)
-			 */
-			debug("random IRQ %X %X\n", udccs0,
-				readl(&dev->regs->udccs[0]));
-			writel(udccs0 & (UDCCS0_SA|UDCCS0_OPR),
-				&dev->regs->udccs[0]);
-		}
-		break;
-	case EP0_IN_DATA_PHASE:			/* GET_DESCRIPTOR etc */
-		if (udccs0 & UDCCS0_OPR) {
-			debug("ep0in premature status\n");
-			if (req)
-				done(ep, req, 0);
-			ep0_idle(dev);
-		} else /* irq was IPR clearing */ {
-			if (req) {
-				debug("next ep0 in packet\n");
-				/* this IN packet might finish the request */
-				(void) write_ep0_fifo(ep, req);
-			} /* else IN token before response was written */
-		}
-		break;
-	case EP0_OUT_DATA_PHASE:		/* SET_DESCRIPTOR etc */
-		if (udccs0 & UDCCS0_OPR) {
-			if (req) {
-				/* this OUT packet might finish the request */
-				if (read_ep0_fifo(ep, req))
-					done(ep, req, 0);
-				/* else more OUT packets expected */
-			} /* else OUT token before read was issued */
-		} else /* irq was IPR clearing */ {
-			debug("ep0out premature status\n");
-			if (req)
-				done(ep, req, 0);
-			ep0_idle(dev);
-		}
-		break;
-	case EP0_END_XFER:
-		if (req)
-			done(ep, req, 0);
-		/*
-		 * ack control-IN status (maybe in-zlp was skipped)
-		 * also appears after some config change events.
-		 */
-		if (udccs0 & UDCCS0_OPR)
-			writel(UDCCS0_OPR, &dev->regs->udccs[0]);
-		ep0_idle(dev);
-		break;
-	case EP0_STALL:
-		writel(UDCCS0_FST, &dev->regs->udccs[0]);
-		break;
-	}
-
-	writel(USIR0_IR0, &dev->regs->usir0);
-}
-
-static void handle_ep(struct pxa25x_ep *ep)
-{
-	struct pxa25x_request	*req;
-	int			is_in = ep->bEndpointAddress & USB_DIR_IN;
-	int			completed;
-	u32			udccs, tmp;
-
-	do {
-		completed = 0;
-		if (likely(!list_empty(&ep->queue)))
-			req = list_entry(ep->queue.next,
-					struct pxa25x_request, queue);
-		else
-			req = NULL;
-
-		/* TODO check FST handling */
-
-		udccs = readl(ep->reg_udccs);
-		if (unlikely(is_in)) {	/* irq from TPC, SST, or (ISO) TUR */
-			tmp = UDCCS_BI_TUR;
-			if (likely(ep->bmAttributes == USB_ENDPOINT_XFER_BULK))
-				tmp |= UDCCS_BI_SST;
-			tmp &= udccs;
-			if (likely(tmp))
-				writel(tmp, ep->reg_udccs);
-			if (req && likely((udccs & UDCCS_BI_TFS) != 0))
-				completed = write_fifo(ep, req);
-
-		} else {	/* irq from RPC (or for ISO, ROF) */
-			if (likely(ep->bmAttributes == USB_ENDPOINT_XFER_BULK))
-				tmp = UDCCS_BO_SST | UDCCS_BO_DME;
-			else
-				tmp = UDCCS_IO_ROF | UDCCS_IO_DME;
-			tmp &= udccs;
-			if (likely(tmp))
-				writel(tmp, ep->reg_udccs);
-
-			/* fifos can hold packets, ready for reading... */
-			if (likely(req))
-				completed = read_fifo(ep, req);
-			else
-				pio_irq_disable(ep->bEndpointAddress);
-		}
-		ep->pio_irqs++;
-	} while (completed);
-}
-
-/*
- *	pxa25x_udc_irq - interrupt handler
- *
- * avoid delays in ep0 processing. the control handshaking isn't always
- * under software control (pxa250c0 and the pxa255 are better), and delays
- * could cause usb protocol errors.
- */
-static struct pxa25x_udc memory;
-static int
-pxa25x_udc_irq(void)
-{
-	struct pxa25x_udc *dev = &memory;
-	int handled;
-
-	test_watchdog(dev);
-
-	dev->stats.irqs++;
-	do {
-		u32 udccr = readl(&dev->regs->udccr);
-
-		handled = 0;
-
-		/* SUSpend Interrupt Request */
-		if (unlikely(udccr & UDCCR_SUSIR)) {
-			udc_ack_int_UDCCR(UDCCR_SUSIR);
-			handled = 1;
-			debug("USB suspend\n");
-
-			if (dev->gadget.speed != USB_SPEED_UNKNOWN
-					&& dev->driver
-					&& dev->driver->suspend)
-				dev->driver->suspend(&dev->gadget);
-			ep0_idle(dev);
-		}
-
-		/* RESume Interrupt Request */
-		if (unlikely(udccr & UDCCR_RESIR)) {
-			udc_ack_int_UDCCR(UDCCR_RESIR);
-			handled = 1;
-			debug("USB resume\n");
-
-			if (dev->gadget.speed != USB_SPEED_UNKNOWN
-					&& dev->driver
-					&& dev->driver->resume)
-				dev->driver->resume(&dev->gadget);
-		}
-
-		/* ReSeT Interrupt Request - USB reset */
-		if (unlikely(udccr & UDCCR_RSTIR)) {
-			udc_ack_int_UDCCR(UDCCR_RSTIR);
-			handled = 1;
-
-			if ((readl(&dev->regs->udccr) & UDCCR_UDA) == 0) {
-				debug("USB reset start\n");
-
-				/*
-				 * reset driver and endpoints,
-				 * in case that's not yet done
-				 */
-				stop_activity(dev, dev->driver);
-
-			} else {
-				debug("USB reset end\n");
-				dev->gadget.speed = USB_SPEED_FULL;
-				memset(&dev->stats, 0, sizeof dev->stats);
-				/* driver and endpoints are still reset */
-			}
-
-		} else {
-			u32 uicr0 = readl(&dev->regs->uicr0);
-			u32 uicr1 = readl(&dev->regs->uicr1);
-			u32 usir0 = readl(&dev->regs->usir0);
-			u32 usir1 = readl(&dev->regs->usir1);
-
-			usir0 = usir0 & ~uicr0;
-			usir1 = usir1 & ~uicr1;
-			int i;
-
-			if (unlikely(!usir0 && !usir1))
-				continue;
-
-			debug_cond(NOISY, "irq %02x.%02x\n", usir1, usir0);
-
-			/* control traffic */
-			if (usir0 & USIR0_IR0) {
-				dev->ep[0].pio_irqs++;
-				handle_ep0(dev);
-				handled = 1;
-			}
-
-			/* endpoint data transfers */
-			for (i = 0; i < 8; i++) {
-				u32	tmp = 1 << i;
-
-				if (i && (usir0 & tmp)) {
-					handle_ep(&dev->ep[i]);
-					setbits_le32(&dev->regs->usir0, tmp);
-					handled = 1;
-				}
-#ifndef	CONFIG_USB_PXA25X_SMALL
-				if (usir1 & tmp) {
-					handle_ep(&dev->ep[i+8]);
-					setbits_le32(&dev->regs->usir1, tmp);
-					handled = 1;
-				}
-#endif
-			}
-		}
-
-		/* we could also ask for 1 msec SOF (SIR) interrupts */
-
-	} while (handled);
-	return IRQ_HANDLED;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * this uses load-time allocation and initialization (instead of
- * doing it at run-time) to save code, eliminate fault paths, and
- * be more obviously correct.
- */
-static struct pxa25x_udc memory = {
-	.regs = UDC_REGS,
-
-	.gadget = {
-		.ops		= &pxa25x_udc_ops,
-		.ep0		= &memory.ep[0].ep,
-		.name		= driver_name,
-	},
-
-	/* control endpoint */
-	.ep[0] = {
-		.ep = {
-			.name		= ep0name,
-			.ops		= &pxa25x_ep_ops,
-			.maxpacket	= EP0_FIFO_SIZE,
-		},
-		.dev		= &memory,
-		.reg_udccs	= &UDC_REGS->udccs[0],
-		.reg_uddr	= &UDC_REGS->uddr0,
-	},
-
-	/* first group of endpoints */
-	.ep[1] = {
-		.ep = {
-			.name		= "ep1in-bulk",
-			.ops		= &pxa25x_ep_ops,
-			.maxpacket	= BULK_FIFO_SIZE,
-		},
-		.dev		= &memory,
-		.fifo_size	= BULK_FIFO_SIZE,
-		.bEndpointAddress = USB_DIR_IN | 1,
-		.bmAttributes	= USB_ENDPOINT_XFER_BULK,
-		.reg_udccs	= &UDC_REGS->udccs[1],
-		.reg_uddr	= &UDC_REGS->uddr1,
-	},
-	.ep[2] = {
-		.ep = {
-			.name		= "ep2out-bulk",
-			.ops		= &pxa25x_ep_ops,
-			.maxpacket	= BULK_FIFO_SIZE,
-		},
-		.dev		= &memory,
-		.fifo_size	= BULK_FIFO_SIZE,
-		.bEndpointAddress = 2,
-		.bmAttributes	= USB_ENDPOINT_XFER_BULK,
-		.reg_udccs	= &UDC_REGS->udccs[2],
-		.reg_ubcr	= &UDC_REGS->ubcr2,
-		.reg_uddr	= &UDC_REGS->uddr2,
-	},
-#ifndef CONFIG_USB_PXA25X_SMALL
-	.ep[3] = {
-		.ep = {
-			.name		= "ep3in-iso",
-			.ops		= &pxa25x_ep_ops,
-			.maxpacket	= ISO_FIFO_SIZE,
-		},
-		.dev		= &memory,
-		.fifo_size	= ISO_FIFO_SIZE,
-		.bEndpointAddress = USB_DIR_IN | 3,
-		.bmAttributes	= USB_ENDPOINT_XFER_ISOC,
-		.reg_udccs	= &UDC_REGS->udccs[3],
-		.reg_uddr	= &UDC_REGS->uddr3,
-	},
-	.ep[4] = {
-		.ep = {
-			.name		= "ep4out-iso",
-			.ops		= &pxa25x_ep_ops,
-			.maxpacket	= ISO_FIFO_SIZE,
-		},
-		.dev		= &memory,
-		.fifo_size	= ISO_FIFO_SIZE,
-		.bEndpointAddress = 4,
-		.bmAttributes	= USB_ENDPOINT_XFER_ISOC,
-		.reg_udccs	= &UDC_REGS->udccs[4],
-		.reg_ubcr	= &UDC_REGS->ubcr4,
-		.reg_uddr	= &UDC_REGS->uddr4,
-	},
-	.ep[5] = {
-		.ep = {
-			.name		= "ep5in-int",
-			.ops		= &pxa25x_ep_ops,
-			.maxpacket	= INT_FIFO_SIZE,
-		},
-		.dev		= &memory,
-		.fifo_size	= INT_FIFO_SIZE,
-		.bEndpointAddress = USB_DIR_IN | 5,
-		.bmAttributes	= USB_ENDPOINT_XFER_INT,
-		.reg_udccs	= &UDC_REGS->udccs[5],
-		.reg_uddr	= &UDC_REGS->uddr5,
-	},
-
-	/* second group of endpoints */
-	.ep[6] = {
-		.ep = {
-			.name		= "ep6in-bulk",
-			.ops		= &pxa25x_ep_ops,
-			.maxpacket	= BULK_FIFO_SIZE,
-		},
-		.dev		= &memory,
-		.fifo_size	= BULK_FIFO_SIZE,
-		.bEndpointAddress = USB_DIR_IN | 6,
-		.bmAttributes	= USB_ENDPOINT_XFER_BULK,
-		.reg_udccs	= &UDC_REGS->udccs[6],
-		.reg_uddr	= &UDC_REGS->uddr6,
-	},
-	.ep[7] = {
-		.ep = {
-			.name		= "ep7out-bulk",
-			.ops		= &pxa25x_ep_ops,
-			.maxpacket	= BULK_FIFO_SIZE,
-		},
-		.dev		= &memory,
-		.fifo_size	= BULK_FIFO_SIZE,
-		.bEndpointAddress = 7,
-		.bmAttributes	= USB_ENDPOINT_XFER_BULK,
-		.reg_udccs	= &UDC_REGS->udccs[7],
-		.reg_ubcr	= &UDC_REGS->ubcr7,
-		.reg_uddr	= &UDC_REGS->uddr7,
-	},
-	.ep[8] = {
-		.ep = {
-			.name		= "ep8in-iso",
-			.ops		= &pxa25x_ep_ops,
-			.maxpacket	= ISO_FIFO_SIZE,
-		},
-		.dev		= &memory,
-		.fifo_size	= ISO_FIFO_SIZE,
-		.bEndpointAddress = USB_DIR_IN | 8,
-		.bmAttributes	= USB_ENDPOINT_XFER_ISOC,
-		.reg_udccs	= &UDC_REGS->udccs[8],
-		.reg_uddr	= &UDC_REGS->uddr8,
-	},
-	.ep[9] = {
-		.ep = {
-			.name		= "ep9out-iso",
-			.ops		= &pxa25x_ep_ops,
-			.maxpacket	= ISO_FIFO_SIZE,
-		},
-		.dev		= &memory,
-		.fifo_size	= ISO_FIFO_SIZE,
-		.bEndpointAddress = 9,
-		.bmAttributes	= USB_ENDPOINT_XFER_ISOC,
-		.reg_udccs	= &UDC_REGS->udccs[9],
-		.reg_ubcr	= &UDC_REGS->ubcr9,
-		.reg_uddr	= &UDC_REGS->uddr9,
-	},
-	.ep[10] = {
-		.ep = {
-			.name		= "ep10in-int",
-			.ops		= &pxa25x_ep_ops,
-			.maxpacket	= INT_FIFO_SIZE,
-		},
-		.dev		= &memory,
-		.fifo_size	= INT_FIFO_SIZE,
-		.bEndpointAddress = USB_DIR_IN | 10,
-		.bmAttributes	= USB_ENDPOINT_XFER_INT,
-		.reg_udccs	= &UDC_REGS->udccs[10],
-		.reg_uddr	= &UDC_REGS->uddr10,
-	},
-
-	/* third group of endpoints */
-	.ep[11] = {
-		.ep = {
-			.name		= "ep11in-bulk",
-			.ops		= &pxa25x_ep_ops,
-			.maxpacket	= BULK_FIFO_SIZE,
-		},
-		.dev		= &memory,
-		.fifo_size	= BULK_FIFO_SIZE,
-		.bEndpointAddress = USB_DIR_IN | 11,
-		.bmAttributes	= USB_ENDPOINT_XFER_BULK,
-		.reg_udccs	= &UDC_REGS->udccs[11],
-		.reg_uddr	= &UDC_REGS->uddr11,
-	},
-	.ep[12] = {
-		.ep = {
-			.name		= "ep12out-bulk",
-			.ops		= &pxa25x_ep_ops,
-			.maxpacket	= BULK_FIFO_SIZE,
-		},
-		.dev		= &memory,
-		.fifo_size	= BULK_FIFO_SIZE,
-		.bEndpointAddress = 12,
-		.bmAttributes	= USB_ENDPOINT_XFER_BULK,
-		.reg_udccs	= &UDC_REGS->udccs[12],
-		.reg_ubcr	= &UDC_REGS->ubcr12,
-		.reg_uddr	= &UDC_REGS->uddr12,
-	},
-	.ep[13] = {
-		.ep = {
-			.name		= "ep13in-iso",
-			.ops		= &pxa25x_ep_ops,
-			.maxpacket	= ISO_FIFO_SIZE,
-		},
-		.dev		= &memory,
-		.fifo_size	= ISO_FIFO_SIZE,
-		.bEndpointAddress = USB_DIR_IN | 13,
-		.bmAttributes	= USB_ENDPOINT_XFER_ISOC,
-		.reg_udccs	= &UDC_REGS->udccs[13],
-		.reg_uddr	= &UDC_REGS->uddr13,
-	},
-	.ep[14] = {
-		.ep = {
-			.name		= "ep14out-iso",
-			.ops		= &pxa25x_ep_ops,
-			.maxpacket	= ISO_FIFO_SIZE,
-		},
-		.dev		= &memory,
-		.fifo_size	= ISO_FIFO_SIZE,
-		.bEndpointAddress = 14,
-		.bmAttributes	= USB_ENDPOINT_XFER_ISOC,
-		.reg_udccs	= &UDC_REGS->udccs[14],
-		.reg_ubcr	= &UDC_REGS->ubcr14,
-		.reg_uddr	= &UDC_REGS->uddr14,
-	},
-	.ep[15] = {
-		.ep = {
-			.name		= "ep15in-int",
-			.ops		= &pxa25x_ep_ops,
-			.maxpacket	= INT_FIFO_SIZE,
-		},
-		.dev		= &memory,
-		.fifo_size	= INT_FIFO_SIZE,
-		.bEndpointAddress = USB_DIR_IN | 15,
-		.bmAttributes	= USB_ENDPOINT_XFER_INT,
-		.reg_udccs	= &UDC_REGS->udccs[15],
-		.reg_uddr	= &UDC_REGS->uddr15,
-	},
-#endif /* !CONFIG_USB_PXA25X_SMALL */
-};
-
-static void udc_command(int cmd)
-{
-	switch (cmd) {
-	case PXA2XX_UDC_CMD_CONNECT:
-		setbits_le32(GPDR(CONFIG_USB_DEV_PULLUP_GPIO),
-			GPIO_bit(CONFIG_USB_DEV_PULLUP_GPIO));
-
-		/* enable pullup */
-		writel(GPIO_bit(CONFIG_USB_DEV_PULLUP_GPIO),
-			GPCR(CONFIG_USB_DEV_PULLUP_GPIO));
-
-		debug("Connected to USB\n");
-		break;
-
-	case PXA2XX_UDC_CMD_DISCONNECT:
-		/* disable pullup resistor */
-		writel(GPIO_bit(CONFIG_USB_DEV_PULLUP_GPIO),
-			GPSR(CONFIG_USB_DEV_PULLUP_GPIO));
-
-		/* setup pin as input, line will float */
-		clrbits_le32(GPDR(CONFIG_USB_DEV_PULLUP_GPIO),
-			GPIO_bit(CONFIG_USB_DEV_PULLUP_GPIO));
-
-		debug("Disconnected from USB\n");
-		break;
-	}
-}
-
-static struct pxa2xx_udc_mach_info mach_info = {
-	.udc_command = udc_command,
-};
-
-/*
- * when a driver is successfully registered, it will receive
- * control requests including set_configuration(), which enables
- * non-control requests.  then usb traffic follows until a
- * disconnect is reported.  then a host may connect again, or
- * the driver might get unbound.
- */
-int usb_gadget_register_driver(struct usb_gadget_driver *driver)
-{
-	struct pxa25x_udc *dev = &memory;
-	int retval;
-	uint32_t chiprev;
-
-	if (!driver
-			|| driver->speed < USB_SPEED_FULL
-			|| !driver->disconnect
-			|| !driver->setup)
-		return -EINVAL;
-	if (!dev)
-		return -ENODEV;
-	if (dev->driver)
-		return -EBUSY;
-
-	/* Enable clock for usb controller */
-	setbits_le32(CKEN, CKEN11_USB);
-
-	/* first hook up the driver ... */
-	dev->driver = driver;
-	dev->pullup = 1;
-
-	/* trigger chiprev-specific logic */
-	switch ((chiprev = pxa_get_cpu_revision())) {
-	case PXA255_A0:
-		dev->has_cfr = 1;
-		break;
-	case PXA250_A0:
-	case PXA250_A1:
-		/* A0/A1 "not released"; ep 13, 15 unusable */
-		/* fall through */
-	case PXA250_B2: case PXA210_B2:
-	case PXA250_B1: case PXA210_B1:
-	case PXA250_B0: case PXA210_B0:
-		/* OUT-DMA is broken ... */
-		/* fall through */
-	case PXA250_C0: case PXA210_C0:
-		break;
-	default:
-		printf("%s: unrecognized processor: %08x\n",
-			DRIVER_NAME, chiprev);
-		return -ENODEV;
-	}
-
-	the_controller = dev;
-
-	/* prepare watchdog timer */
-	dev->watchdog.running = 0;
-	dev->watchdog.period = 5000 * CONFIG_SYS_HZ / 1000000; /* 5 ms */
-	dev->watchdog.function = udc_watchdog;
-
-	dev->mach = &mach_info;
-
-	udc_disable(dev);
-	udc_reinit(dev);
-
-	dev->gadget.name = "pxa2xx_udc";
-	retval = driver->bind(&dev->gadget);
-	if (retval) {
-		printf("bind to driver %s --> error %d\n",
-				DRIVER_NAME, retval);
-		dev->driver = NULL;
-		return retval;
-	}
-
-	/*
-	 * ... then enable host detection and ep0; and we're ready
-	 * for set_configuration as well as eventual disconnect.
-	 */
-	printf("registered gadget driver '%s'\n", DRIVER_NAME);
-
-	pullup(dev);
-	dump_state(dev);
-	return 0;
-}
-
-static void
-stop_activity(struct pxa25x_udc *dev, struct usb_gadget_driver *driver)
-{
-	int i;
-
-	/* don't disconnect drivers more than once */
-	if (dev->gadget.speed == USB_SPEED_UNKNOWN)
-		driver = NULL;
-	dev->gadget.speed = USB_SPEED_UNKNOWN;
-
-	/* prevent new request submissions, kill any outstanding requests  */
-	for (i = 0; i < PXA_UDC_NUM_ENDPOINTS; i++) {
-		struct pxa25x_ep *ep = &dev->ep[i];
-
-		ep->stopped = 1;
-		nuke(ep, -ESHUTDOWN);
-	}
-	stop_watchdog(dev);
-
-	/* report disconnect; the driver is already quiesced */
-	if (driver)
-		driver->disconnect(&dev->gadget);
-
-	/* re-init driver-visible data structures */
-	udc_reinit(dev);
-}
-
-int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
-{
-	struct pxa25x_udc	*dev = the_controller;
-
-	if (!dev)
-		return -ENODEV;
-	if (!driver || driver != dev->driver || !driver->unbind)
-		return -EINVAL;
-
-	local_irq_disable();
-	dev->pullup = 0;
-	pullup(dev);
-	stop_activity(dev, driver);
-	local_irq_enable();
-
-	driver->unbind(&dev->gadget);
-	dev->driver = NULL;
-
-	printf("unregistered gadget driver '%s'\n", DRIVER_NAME);
-	dump_state(dev);
-
-	the_controller = NULL;
-
-	clrbits_le32(CKEN, CKEN11_USB);
-
-	return 0;
-}
-
-extern void udc_disconnect(void)
-{
-	setbits_le32(CKEN, CKEN11_USB);
-	udc_clear_mask_UDCCR(UDCCR_UDE);
-	udc_command(PXA2XX_UDC_CMD_DISCONNECT);
-	clrbits_le32(CKEN, CKEN11_USB);
-}
-
-/*-------------------------------------------------------------------------*/
-
-extern int
-usb_gadget_handle_interrupts(int index)
-{
-	return pxa25x_udc_irq();
-}
diff --git a/drivers/usb/gadget/pxa25x_udc.h b/drivers/usb/gadget/pxa25x_udc.h
deleted file mode 100644
index 7c3882aa1e0..00000000000
--- a/drivers/usb/gadget/pxa25x_udc.h
+++ /dev/null
@@ -1,149 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0+ */
-/*
- * Intel PXA25x on-chip full speed USB device controller
- *
- * Copyright (C) 2003 Robert Schwebel <r.schwebel@pengutronix.de>, Pengutronix
- * Copyright (C) 2003 David Brownell
- * Copyright (C) 2012 Lukasz Dalek <luk0104@gmail.com>
- */
-
-#ifndef __LINUX_USB_GADGET_PXA25X_H
-#define __LINUX_USB_GADGET_PXA25X_H
-
-#include <linux/types.h>
-#include <asm/arch/regs-usb.h>
-
-/*
- * Prefetching support - only ARMv5.
- */
-
-#ifdef ARCH_HAS_PREFETCH
-static inline void prefetch(const void *ptr)
-{
-	__asm__ __volatile__(
-		"pld\t%a0"
-		:
-		: "p" (ptr)
-		: "cc");
-}
-
-#define prefetchw(ptr)	prefetch(ptr)
-#endif /* ARCH_HAS_PREFETCH */
-
-/*-------------------------------------------------------------------------*/
-
-#define UDC_REGS	((struct pxa25x_udc_regs *)PXA25X_UDC_BASE)
-
-/*-------------------------------------------------------------------------*/
-
-struct pxa2xx_udc_mach_info {
-	int  (*udc_is_connected)(void);		/* do we see host? */
-	void (*udc_command)(int cmd);
-#define	PXA2XX_UDC_CMD_CONNECT		0	/* let host see us */
-#define	PXA2XX_UDC_CMD_DISCONNECT	1	/* so host won't see us */
-};
-
-struct pxa25x_udc;
-
-struct pxa25x_ep {
-	struct usb_ep				ep;
-	struct pxa25x_udc			*dev;
-
-	const struct usb_endpoint_descriptor	*desc;
-	struct list_head			queue;
-	unsigned long				pio_irqs;
-
-	unsigned short				fifo_size;
-	u8					bEndpointAddress;
-	u8					bmAttributes;
-
-	unsigned				stopped:1;
-
-	/* UDCCS = UDC Control/Status for this EP
-	 * UBCR = UDC Byte Count Remaining (contents of OUT fifo)
-	 * UDDR = UDC Endpoint Data Register (the fifo)
-	 * DRCM = DMA Request Channel Map
-	 */
-	u32					*reg_udccs;
-	u32					*reg_ubcr;
-	u32					*reg_uddr;
-};
-
-struct pxa25x_request {
-	struct usb_request			req;
-	struct list_head			queue;
-};
-
-enum ep0_state {
-	EP0_IDLE,
-	EP0_IN_DATA_PHASE,
-	EP0_OUT_DATA_PHASE,
-	EP0_END_XFER,
-	EP0_STALL,
-};
-
-#define EP0_FIFO_SIZE	16U
-#define BULK_FIFO_SIZE	64U
-#define ISO_FIFO_SIZE	256U
-#define INT_FIFO_SIZE	8U
-
-struct udc_stats {
-	struct ep0stats {
-		unsigned long		ops;
-		unsigned long		bytes;
-	} read, write;
-	unsigned long			irqs;
-};
-
-#ifdef CONFIG_USB_PXA25X_SMALL
-/* when memory's tight, SMALL config saves code+data.  */
-#define	PXA_UDC_NUM_ENDPOINTS	3
-#endif
-
-#ifndef	PXA_UDC_NUM_ENDPOINTS
-#define	PXA_UDC_NUM_ENDPOINTS	16
-#endif
-
-struct pxa25x_watchdog {
-	unsigned				running:1;
-	ulong					period;
-	ulong					base;
-	struct pxa25x_udc			*udc;
-
-	void (*function)(struct pxa25x_udc *udc);
-};
-
-struct pxa25x_udc {
-	struct usb_gadget			gadget;
-	struct usb_gadget_driver		*driver;
-	struct pxa25x_udc_regs			*regs;
-
-	enum ep0_state				ep0state;
-	struct udc_stats			stats;
-	unsigned				got_irq:1,
-						pullup:1,
-						has_cfr:1,
-						req_pending:1,
-						req_std:1,
-						req_config:1,
-						active:1;
-
-	struct clk				*clk;
-	struct pxa2xx_udc_mach_info		*mach;
-	u64					dma_mask;
-	struct pxa25x_ep			ep[PXA_UDC_NUM_ENDPOINTS];
-
-	struct pxa25x_watchdog			watchdog;
-};
-
-/*-------------------------------------------------------------------------*/
-
-static struct pxa25x_udc *the_controller;
-
-/*-------------------------------------------------------------------------*/
-
-#ifndef DEBUG
-# define NOISY 0
-#endif
-
-#endif /* __LINUX_USB_GADGET_PXA25X_H */