USB: NXP ISP1362 USB host driver

Signed-off-by: Lothar Wassmann <LW@KARO-electronics.de>
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 2905 insertions, 0 deletions

diff --git a/drivers/usb/host/isp1362-hcd.c b/drivers/usb/host/isp1362-hcd.c
new file mode 100644
index 000000000000..5819e10a146c
--- /dev/null
+++ b/drivers/usb/host/isp1362-hcd.c
@@ -0,0 +1,2905 @@
+/*
+ * ISP1362 HCD (Host Controller Driver) for USB.
+ *
+ * Copyright (C) 2005 Lothar Wassmann <LW@KARO-electronics.de>
+ *
+ * Derived from the SL811 HCD, rewritten for ISP116x.
+ * Copyright (C) 2005 Olav Kongas <ok@artecdesign.ee>
+ *
+ * Portions:
+ * Copyright (C) 2004 Psion Teklogix (for NetBook PRO)
+ * Copyright (C) 2004 David Brownell
+ */
+
+/*
+ * The ISP1362 chip requires a large delay (300ns and 462ns) between
+ * accesses to the address and data register.
+ * The following timing options exist:
+ *
+ * 1. Configure your memory controller to add such delays if it can (the best)
+ * 2. Implement platform-specific delay function possibly
+ *    combined with configuring the memory controller; see
+ *    include/linux/usb_isp1362.h for more info.
+ * 3. Use ndelay (easiest, poorest).
+ *
+ * Use the corresponding macros USE_PLATFORM_DELAY and USE_NDELAY in the
+ * platform specific section of isp1362.h to select the appropriate variant.
+ *
+ * Also note that according to the Philips "ISP1362 Errata" document
+ * Rev 1.00 from 27 May data corruption may occur when the #WR signal
+ * is reasserted (even with #CS deasserted) within 132ns after a
+ * write cycle to any controller register. If the hardware doesn't
+ * implement the recommended fix (gating the #WR with #CS) software
+ * must ensure that no further write cycle (not necessarily to the chip!)
+ * is issued by the CPU within this interval.
+
+ * For PXA25x this can be ensured by using VLIO with the maximum
+ * recovery time (MSCx = 0x7f8c) with a memory clock of 99.53 MHz.
+ */
+
+#ifdef CONFIG_USB_DEBUG
+# define ISP1362_DEBUG
+#else
+# undef ISP1362_DEBUG
+#endif
+
+/*
+ * The PXA255 UDC apparently doesn't handle GET_STATUS, GET_CONFIG and
+ * GET_INTERFACE requests correctly when the SETUP and DATA stages of the
+ * requests are carried out in separate frames. This will delay any SETUP
+ * packets until the start of the next frame so that this situation is
+ * unlikely to occur (and makes usbtest happy running with a PXA255 target
+ * device).
+ */
+#undef BUGGY_PXA2XX_UDC_USBTEST
+
+#undef PTD_TRACE
+#undef URB_TRACE
+#undef VERBOSE
+#undef REGISTERS
+
+/* This enables a memory test on the ISP1362 chip memory to make sure the
+ * chip access timing is correct.
+ */
+#undef CHIP_BUFFER_TEST
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/ioport.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/smp_lock.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/interrupt.h>
+#include <linux/usb.h>
+#include <linux/usb/isp1362.h>
+#include <linux/platform_device.h>
+#include <linux/pm.h>
+#include <linux/io.h>
+#include <linux/bitops.h>
+
+#include <asm/irq.h>
+#include <asm/system.h>
+#include <asm/byteorder.h>
+#include <asm/unaligned.h>
+
+static int dbg_level;
+#ifdef ISP1362_DEBUG
+module_param(dbg_level, int, 0644);
+#else
+module_param(dbg_level, int, 0);
+#define	STUB_DEBUG_FILE
+#endif
+
+#include "../core/hcd.h"
+#include "../core/usb.h"
+#include "isp1362.h"
+
+
+#define DRIVER_VERSION	"2005-04-04"
+#define DRIVER_DESC	"ISP1362 USB Host Controller Driver"
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+
+static const char hcd_name[] = "isp1362-hcd";
+
+static void isp1362_hc_stop(struct usb_hcd *hcd);
+static int isp1362_hc_start(struct usb_hcd *hcd);
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * When called from the interrupthandler only isp1362_hcd->irqenb is modified,
+ * since the interrupt handler will write isp1362_hcd->irqenb to HCuPINT upon
+ * completion.
+ * We don't need a 'disable' counterpart, since interrupts will be disabled
+ * only by the interrupt handler.
+ */
+static inline void isp1362_enable_int(struct isp1362_hcd *isp1362_hcd, u16 mask)
+{
+	if ((isp1362_hcd->irqenb | mask) == isp1362_hcd->irqenb)
+		return;
+	if (mask & ~isp1362_hcd->irqenb)
+		isp1362_write_reg16(isp1362_hcd, HCuPINT, mask & ~isp1362_hcd->irqenb);
+	isp1362_hcd->irqenb |= mask;
+	if (isp1362_hcd->irq_active)
+		return;
+	isp1362_write_reg16(isp1362_hcd, HCuPINTENB, isp1362_hcd->irqenb);
+}
+
+/*-------------------------------------------------------------------------*/
+
+static inline struct isp1362_ep_queue *get_ptd_queue(struct isp1362_hcd *isp1362_hcd,
+						     u16 offset)
+{
+	struct isp1362_ep_queue *epq = NULL;
+
+	if (offset < isp1362_hcd->istl_queue[1].buf_start)
+		epq = &isp1362_hcd->istl_queue[0];
+	else if (offset < isp1362_hcd->intl_queue.buf_start)
+		epq = &isp1362_hcd->istl_queue[1];
+	else if (offset < isp1362_hcd->atl_queue.buf_start)
+		epq = &isp1362_hcd->intl_queue;
+	else if (offset < isp1362_hcd->atl_queue.buf_start +
+		   isp1362_hcd->atl_queue.buf_size)
+		epq = &isp1362_hcd->atl_queue;
+
+	if (epq)
+		DBG(1, "%s: PTD $%04x is on %s queue\n", __func__, offset, epq->name);
+	else
+		pr_warning("%s: invalid PTD $%04x\n", __func__, offset);
+
+	return epq;
+}
+
+static inline int get_ptd_offset(struct isp1362_ep_queue *epq, u8 index)
+{
+	int offset;
+
+	if (index * epq->blk_size > epq->buf_size) {
+		pr_warning("%s: Bad %s index %d(%d)\n", __func__, epq->name, index,
+		     epq->buf_size / epq->blk_size);
+		return -EINVAL;
+	}
+	offset = epq->buf_start + index * epq->blk_size;
+	DBG(3, "%s: %s PTD[%02x] # %04x\n", __func__, epq->name, index, offset);
+
+	return offset;
+}
+
+/*-------------------------------------------------------------------------*/
+
+static inline u16 max_transfer_size(struct isp1362_ep_queue *epq, size_t size,
+				    int mps)
+{
+	u16 xfer_size = min_t(size_t, MAX_XFER_SIZE, size);
+
+	xfer_size = min_t(size_t, xfer_size, epq->buf_avail * epq->blk_size - PTD_HEADER_SIZE);
+	if (xfer_size < size && xfer_size % mps)
+		xfer_size -= xfer_size % mps;
+
+	return xfer_size;
+}
+
+static int claim_ptd_buffers(struct isp1362_ep_queue *epq,
+			     struct isp1362_ep *ep, u16 len)
+{
+	int ptd_offset = -EINVAL;
+	int index;
+	int num_ptds = ((len + PTD_HEADER_SIZE - 1) / epq->blk_size) + 1;
+	int found = -1;
+	int last = -1;
+
+	BUG_ON(len > epq->buf_size);
+
+	if (!epq->buf_avail)
+		return -ENOMEM;
+
+	if (ep->num_ptds)
+		pr_err("%s: %s len %d/%d num_ptds %d buf_map %08lx skip_map %08lx\n", __func__,
+		    epq->name, len, epq->blk_size, num_ptds, epq->buf_map, epq->skip_map);
+	BUG_ON(ep->num_ptds != 0);
+
+	for (index = 0; index <= epq->buf_count - num_ptds; index++) {
+		if (test_bit(index, &epq->buf_map))
+			continue;
+		found = index;
+		for (last = index + 1; last < index + num_ptds; last++) {
+			if (test_bit(last, &epq->buf_map)) {
+				found = -1;
+				break;
+			}
+		}
+		if (found >= 0)
+			break;
+	}
+	if (found < 0)
+		return -EOVERFLOW;
+
+	DBG(1, "%s: Found %d PTDs[%d] for %d/%d byte\n", __func__,
+	    num_ptds, found, len, (int)(epq->blk_size - PTD_HEADER_SIZE));
+	ptd_offset = get_ptd_offset(epq, found);
+	WARN_ON(ptd_offset < 0);
+	ep->ptd_offset = ptd_offset;
+	ep->num_ptds += num_ptds;
+	epq->buf_avail -= num_ptds;
+	BUG_ON(epq->buf_avail > epq->buf_count);
+	ep->ptd_index = found;
+	for (index = found; index < last; index++)
+		__set_bit(index, &epq->buf_map);
+	DBG(1, "%s: Done %s PTD[%d] $%04x, avail %d count %d claimed %d %08lx:%08lx\n",
+	    __func__, epq->name, ep->ptd_index, ep->ptd_offset,
+	    epq->buf_avail, epq->buf_count, num_ptds, epq->buf_map, epq->skip_map);
+
+	return found;
+}
+
+static inline void release_ptd_buffers(struct isp1362_ep_queue *epq, struct isp1362_ep *ep)
+{
+	int index = ep->ptd_index;
+	int last = ep->ptd_index + ep->num_ptds;
+
+	if (last > epq->buf_count)
+		pr_err("%s: ep %p req %d len %d %s PTD[%d] $%04x num_ptds %d buf_count %d buf_avail %d buf_map %08lx skip_map %08lx\n",
+		    __func__, ep, ep->num_req, ep->length, epq->name, ep->ptd_index,
+		    ep->ptd_offset, ep->num_ptds, epq->buf_count, epq->buf_avail,
+		    epq->buf_map, epq->skip_map);
+	BUG_ON(last > epq->buf_count);
+
+	for (; index < last; index++) {
+		__clear_bit(index, &epq->buf_map);
+		__set_bit(index, &epq->skip_map);
+	}
+	epq->buf_avail += ep->num_ptds;
+	epq->ptd_count--;
+
+	BUG_ON(epq->buf_avail > epq->buf_count);
+	BUG_ON(epq->ptd_count > epq->buf_count);
+
+	DBG(1, "%s: Done %s PTDs $%04x released %d avail %d count %d\n",
+	    __func__, epq->name,
+	    ep->ptd_offset, ep->num_ptds, epq->buf_avail, epq->buf_count);
+	DBG(1, "%s: buf_map %08lx skip_map %08lx\n", __func__,
+	    epq->buf_map, epq->skip_map);
+
+	ep->num_ptds = 0;
+	ep->ptd_offset = -EINVAL;
+	ep->ptd_index = -EINVAL;
+}
+
+/*-------------------------------------------------------------------------*/
+
+/*
+  Set up PTD's.
+*/
+static void prepare_ptd(struct isp1362_hcd *isp1362_hcd, struct urb *urb,
+			struct isp1362_ep *ep, struct isp1362_ep_queue *epq,
+			u16 fno)
+{
+	struct ptd *ptd;
+	int toggle;
+	int dir;
+	u16 len;
+	size_t buf_len = urb->transfer_buffer_length - urb->actual_length;
+
+	DBG(3, "%s: %s ep %p\n", __func__, epq->name, ep);
+
+	ptd = &ep->ptd;
+
+	ep->data = (unsigned char *)urb->transfer_buffer + urb->actual_length;
+
+	switch (ep->nextpid) {
+	case USB_PID_IN:
+		toggle = usb_gettoggle(urb->dev, ep->epnum, 0);
+		dir = PTD_DIR_IN;
+		if (usb_pipecontrol(urb->pipe)) {
+			len = min_t(size_t, ep->maxpacket, buf_len);
+		} else if (usb_pipeisoc(urb->pipe)) {
+			len = min_t(size_t, urb->iso_frame_desc[fno].length, MAX_XFER_SIZE);
+			ep->data = urb->transfer_buffer + urb->iso_frame_desc[fno].offset;
+		} else
+			len = max_transfer_size(epq, buf_len, ep->maxpacket);
+		DBG(1, "%s: IN    len %d/%d/%d from URB\n", __func__, len, ep->maxpacket,
+		    (int)buf_len);
+		break;
+	case USB_PID_OUT:
+		toggle = usb_gettoggle(urb->dev, ep->epnum, 1);
+		dir = PTD_DIR_OUT;
+		if (usb_pipecontrol(urb->pipe))
+			len = min_t(size_t, ep->maxpacket, buf_len);
+		else if (usb_pipeisoc(urb->pipe))
+			len = min_t(size_t, urb->iso_frame_desc[0].length, MAX_XFER_SIZE);
+		else
+			len = max_transfer_size(epq, buf_len, ep->maxpacket);
+		if (len == 0)
+			pr_info("%s: Sending ZERO packet: %d\n", __func__,
+			     urb->transfer_flags & URB_ZERO_PACKET);
+		DBG(1, "%s: OUT   len %d/%d/%d from URB\n", __func__, len, ep->maxpacket,
+		    (int)buf_len);
+		break;
+	case USB_PID_SETUP:
+		toggle = 0;
+		dir = PTD_DIR_SETUP;
+		len = sizeof(struct usb_ctrlrequest);
+		DBG(1, "%s: SETUP len %d\n", __func__, len);
+		ep->data = urb->setup_packet;
+		break;
+	case USB_PID_ACK:
+		toggle = 1;
+		len = 0;
+		dir = (urb->transfer_buffer_length && usb_pipein(urb->pipe)) ?
+			PTD_DIR_OUT : PTD_DIR_IN;
+		DBG(1, "%s: ACK   len %d\n", __func__, len);
+		break;
+	default:
+		toggle = dir = len = 0;
+		pr_err("%s@%d: ep->nextpid %02x\n", __func__, __LINE__, ep->nextpid);
+		BUG_ON(1);
+	}
+
+	ep->length = len;
+	if (!len)
+		ep->data = NULL;
+
+	ptd->count = PTD_CC_MSK | PTD_ACTIVE_MSK | PTD_TOGGLE(toggle);
+	ptd->mps = PTD_MPS(ep->maxpacket) | PTD_SPD(urb->dev->speed == USB_SPEED_LOW) |
+		PTD_EP(ep->epnum);
+	ptd->len = PTD_LEN(len) | PTD_DIR(dir);
+	ptd->faddr = PTD_FA(usb_pipedevice(urb->pipe));
+
+	if (usb_pipeint(urb->pipe)) {
+		ptd->faddr |= PTD_SF_INT(ep->branch);
+		ptd->faddr |= PTD_PR(ep->interval ? __ffs(ep->interval) : 0);
+	}
+	if (usb_pipeisoc(urb->pipe))
+		ptd->faddr |= PTD_SF_ISO(fno);
+
+	DBG(1, "%s: Finished\n", __func__);
+}
+
+static void isp1362_write_ptd(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep,
+			      struct isp1362_ep_queue *epq)
+{
+	struct ptd *ptd = &ep->ptd;
+	int len = PTD_GET_DIR(ptd) == PTD_DIR_IN ? 0 : ep->length;
+
+	_BUG_ON(ep->ptd_offset < 0);
+
+	prefetch(ptd);
+	isp1362_write_buffer(isp1362_hcd, ptd, ep->ptd_offset, PTD_HEADER_SIZE);
+	if (len)
+		isp1362_write_buffer(isp1362_hcd, ep->data,
+				     ep->ptd_offset + PTD_HEADER_SIZE, len);
+
+	dump_ptd(ptd);
+	dump_ptd_out_data(ptd, ep->data);
+}
+
+static void isp1362_read_ptd(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep,
+			     struct isp1362_ep_queue *epq)
+{
+	struct ptd *ptd = &ep->ptd;
+	int act_len;
+
+	WARN_ON(list_empty(&ep->active));
+	BUG_ON(ep->ptd_offset < 0);
+
+	list_del_init(&ep->active);
+	DBG(1, "%s: ep %p removed from active list %p\n", __func__, ep, &epq->active);
+
+	prefetchw(ptd);
+	isp1362_read_buffer(isp1362_hcd, ptd, ep->ptd_offset, PTD_HEADER_SIZE);
+	dump_ptd(ptd);
+	act_len = PTD_GET_COUNT(ptd);
+	if (PTD_GET_DIR(ptd) != PTD_DIR_IN || act_len == 0)
+		return;
+	if (act_len > ep->length)
+		pr_err("%s: ep %p PTD $%04x act_len %d ep->length %d\n", __func__, ep,
+			 ep->ptd_offset, act_len, ep->length);
+	BUG_ON(act_len > ep->length);
+	/* Only transfer the amount of data that has actually been overwritten
+	 * in the chip buffer. We don't want any data that doesn't belong to the
+	 * transfer to leak out of the chip to the callers transfer buffer!
+	 */
+	prefetchw(ep->data);
+	isp1362_read_buffer(isp1362_hcd, ep->data,
+			    ep->ptd_offset + PTD_HEADER_SIZE, act_len);
+	dump_ptd_in_data(ptd, ep->data);
+}
+
+/*
+ * INT PTDs will stay in the chip until data is available.
+ * This function will remove a PTD from the chip when the URB is dequeued.
+ * Must be called with the spinlock held and IRQs disabled
+ */
+static void remove_ptd(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep)
+
+{
+	int index;
+	struct isp1362_ep_queue *epq;
+
+	DBG(1, "%s: ep %p PTD[%d] $%04x\n", __func__, ep, ep->ptd_index, ep->ptd_offset);
+	BUG_ON(ep->ptd_offset < 0);
+
+	epq = get_ptd_queue(isp1362_hcd, ep->ptd_offset);
+	BUG_ON(!epq);
+
+	/* put ep in remove_list for cleanup */
+	WARN_ON(!list_empty(&ep->remove_list));
+	list_add_tail(&ep->remove_list, &isp1362_hcd->remove_list);
+	/* let SOF interrupt handle the cleanup */
+	isp1362_enable_int(isp1362_hcd, HCuPINT_SOF);
+
+	index = ep->ptd_index;
+	if (index < 0)
+		/* ISO queues don't have SKIP registers */
+		return;
+
+	DBG(1, "%s: Disabling PTD[%02x] $%04x %08lx|%08x\n", __func__,
+	    index, ep->ptd_offset, epq->skip_map, 1 << index);
+
+	/* prevent further processing of PTD (will be effective after next SOF) */
+	epq->skip_map |= 1 << index;
+	if (epq == &isp1362_hcd->atl_queue) {
+		DBG(2, "%s: ATLSKIP = %08x -> %08lx\n", __func__,
+		    isp1362_read_reg32(isp1362_hcd, HCATLSKIP), epq->skip_map);
+		isp1362_write_reg32(isp1362_hcd, HCATLSKIP, epq->skip_map);
+		if (~epq->skip_map == 0)
+			isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ATL_ACTIVE);
+	} else if (epq == &isp1362_hcd->intl_queue) {
+		DBG(2, "%s: INTLSKIP = %08x -> %08lx\n", __func__,
+		    isp1362_read_reg32(isp1362_hcd, HCINTLSKIP), epq->skip_map);
+		isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, epq->skip_map);
+		if (~epq->skip_map == 0)
+			isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_INTL_ACTIVE);
+	}
+}
+
+/*
+  Take done or failed requests out of schedule. Give back
+  processed urbs.
+*/
+static void finish_request(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep,
+			   struct urb *urb, int status)
+     __releases(isp1362_hcd->lock)
+     __acquires(isp1362_hcd->lock)
+{
+	urb->hcpriv = NULL;
+	ep->error_count = 0;
+
+	if (usb_pipecontrol(urb->pipe))
+		ep->nextpid = USB_PID_SETUP;
+
+	URB_DBG("%s: req %d FA %d ep%d%s %s: len %d/%d %s stat %d\n", __func__,
+		ep->num_req, usb_pipedevice(urb->pipe),
+		usb_pipeendpoint(urb->pipe),
+		!usb_pipein(urb->pipe) ? "out" : "in",
+		usb_pipecontrol(urb->pipe) ? "ctrl" :
+			usb_pipeint(urb->pipe) ? "int" :
+			usb_pipebulk(urb->pipe) ? "bulk" :
+			"iso",
+		urb->actual_length, urb->transfer_buffer_length,
+		!(urb->transfer_flags & URB_SHORT_NOT_OK) ?
+		"short_ok" : "", urb->status);
+
+
+	usb_hcd_unlink_urb_from_ep(isp1362_hcd_to_hcd(isp1362_hcd), urb);
+	spin_unlock(&isp1362_hcd->lock);
+	usb_hcd_giveback_urb(isp1362_hcd_to_hcd(isp1362_hcd), urb, status);
+	spin_lock(&isp1362_hcd->lock);
+
+	/* take idle endpoints out of the schedule right away */
+	if (!list_empty(&ep->hep->urb_list))
+		return;
+
+	/* async deschedule */
+	if (!list_empty(&ep->schedule)) {
+		list_del_init(&ep->schedule);
+		return;
+	}
+
+
+	if (ep->interval) {
+		/* periodic deschedule */
+		DBG(1, "deschedule qh%d/%p branch %d load %d bandwidth %d -> %d\n", ep->interval,
+		    ep, ep->branch, ep->load,
+		    isp1362_hcd->load[ep->branch],
+		    isp1362_hcd->load[ep->branch] - ep->load);
+		isp1362_hcd->load[ep->branch] -= ep->load;
+		ep->branch = PERIODIC_SIZE;
+	}
+}
+
+/*
+ * Analyze transfer results, handle partial transfers and errors
+*/
+static void postproc_ep(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep)
+{
+	struct urb *urb = get_urb(ep);
+	struct usb_device *udev;
+	struct ptd *ptd;
+	int short_ok;
+	u16 len;
+	int urbstat = -EINPROGRESS;
+	u8 cc;
+
+	DBG(2, "%s: ep %p req %d\n", __func__, ep, ep->num_req);
+
+	udev = urb->dev;
+	ptd = &ep->ptd;
+	cc = PTD_GET_CC(ptd);
+	if (cc == PTD_NOTACCESSED) {
+		pr_err("%s: req %d PTD %p Untouched by ISP1362\n", __func__,
+		    ep->num_req, ptd);
+		cc = PTD_DEVNOTRESP;
+	}
+
+	short_ok = !(urb->transfer_flags & URB_SHORT_NOT_OK);
+	len = urb->transfer_buffer_length - urb->actual_length;
+
+	/* Data underrun is special. For allowed underrun
+	   we clear the error and continue as normal. For
+	   forbidden underrun we finish the DATA stage
+	   immediately while for control transfer,
+	   we do a STATUS stage.
+	*/
+	if (cc == PTD_DATAUNDERRUN) {
+		if (short_ok) {
+			DBG(1, "%s: req %d Allowed data underrun short_%sok %d/%d/%d byte\n",
+			    __func__, ep->num_req, short_ok ? "" : "not_",
+			    PTD_GET_COUNT(ptd), ep->maxpacket, len);
+			cc = PTD_CC_NOERROR;
+			urbstat = 0;
+		} else {
+			DBG(1, "%s: req %d Data Underrun %s nextpid %02x short_%sok %d/%d/%d byte\n",
+			    __func__, ep->num_req,
+			    usb_pipein(urb->pipe) ? "IN" : "OUT", ep->nextpid,
+			    short_ok ? "" : "not_",
+			    PTD_GET_COUNT(ptd), ep->maxpacket, len);
+			if (usb_pipecontrol(urb->pipe)) {
+				ep->nextpid = USB_PID_ACK;
+				/* save the data underrun error code for later and
+				 * procede with the status stage
+				 */
+				urb->actual_length += PTD_GET_COUNT(ptd);
+				BUG_ON(urb->actual_length > urb->transfer_buffer_length);
+
+				if (urb->status == -EINPROGRESS)
+					urb->status = cc_to_error[PTD_DATAUNDERRUN];
+			} else {
+				usb_settoggle(udev, ep->epnum, ep->nextpid == USB_PID_OUT,
+					      PTD_GET_TOGGLE(ptd));
+				urbstat = cc_to_error[PTD_DATAUNDERRUN];
+			}
+			goto out;
+		}
+	}
+
+	if (cc != PTD_CC_NOERROR) {
+		if (++ep->error_count >= 3 || cc == PTD_CC_STALL || cc == PTD_DATAOVERRUN) {
+			urbstat = cc_to_error[cc];
+			DBG(1, "%s: req %d nextpid %02x, status %d, error %d, error_count %d\n",
+			    __func__, ep->num_req, ep->nextpid, urbstat, cc,
+			    ep->error_count);
+		}
+		goto out;
+	}
+
+	switch (ep->nextpid) {
+	case USB_PID_OUT:
+		if (PTD_GET_COUNT(ptd) != ep->length)
+			pr_err("%s: count=%d len=%d\n", __func__,
+			   PTD_GET_COUNT(ptd), ep->length);
+		BUG_ON(PTD_GET_COUNT(ptd) != ep->length);
+		urb->actual_length += ep->length;
+		BUG_ON(urb->actual_length > urb->transfer_buffer_length);
+		usb_settoggle(udev, ep->epnum, 1, PTD_GET_TOGGLE(ptd));
+		if (urb->actual_length == urb->transfer_buffer_length) {
+			DBG(3, "%s: req %d xfer complete %d/%d status %d -> 0\n", __func__,
+			    ep->num_req, len, ep->maxpacket, urbstat);
+			if (usb_pipecontrol(urb->pipe)) {
+				DBG(3, "%s: req %d %s Wait for ACK\n", __func__,
+				    ep->num_req,
+				    usb_pipein(urb->pipe) ? "IN" : "OUT");
+				ep->nextpid = USB_PID_ACK;
+			} else {
+				if (len % ep->maxpacket ||
+				    !(urb->transfer_flags & URB_ZERO_PACKET)) {
+					urbstat = 0;
+					DBG(3, "%s: req %d URB %s status %d count %d/%d/%d\n",
+					    __func__, ep->num_req, usb_pipein(urb->pipe) ? "IN" : "OUT",
+					    urbstat, len, ep->maxpacket, urb->actual_length);
+				}
+			}
+		}
+		break;
+	case USB_PID_IN:
+		len = PTD_GET_COUNT(ptd);
+		BUG_ON(len > ep->length);
+		urb->actual_length += len;
+		BUG_ON(urb->actual_length > urb->transfer_buffer_length);
+		usb_settoggle(udev, ep->epnum, 0, PTD_GET_TOGGLE(ptd));
+		/* if transfer completed or (allowed) data underrun */
+		if ((urb->transfer_buffer_length == urb->actual_length) ||
+		    len % ep->maxpacket) {
+			DBG(3, "%s: req %d xfer complete %d/%d status %d -> 0\n", __func__,
+			    ep->num_req, len, ep->maxpacket, urbstat);
+			if (usb_pipecontrol(urb->pipe)) {
+				DBG(3, "%s: req %d %s Wait for ACK\n", __func__,
+				    ep->num_req,
+				    usb_pipein(urb->pipe) ? "IN" : "OUT");
+				ep->nextpid = USB_PID_ACK;
+			} else {
+				urbstat = 0;
+				DBG(3, "%s: req %d URB %s status %d count %d/%d/%d\n",
+				    __func__, ep->num_req, usb_pipein(urb->pipe) ? "IN" : "OUT",
+				    urbstat, len, ep->maxpacket, urb->actual_length);
+			}
+		}
+		break;
+	case USB_PID_SETUP:
+		if (urb->transfer_buffer_length == urb->actual_length) {
+			ep->nextpid = USB_PID_ACK;
+		} else if (usb_pipeout(urb->pipe)) {
+			usb_settoggle(udev, 0, 1, 1);
+			ep->nextpid = USB_PID_OUT;
+		} else {
+			usb_settoggle(udev, 0, 0, 1);
+			ep->nextpid = USB_PID_IN;
+		}
+		break;
+	case USB_PID_ACK:
+		DBG(3, "%s: req %d got ACK %d -> 0\n", __func__, ep->num_req,
+		    urbstat);
+		WARN_ON(urbstat != -EINPROGRESS);
+		urbstat = 0;
+		ep->nextpid = 0;
+		break;
+	default:
+		BUG_ON(1);
+	}
+
+ out:
+	if (urbstat != -EINPROGRESS) {
+		DBG(2, "%s: Finishing ep %p req %d urb %p status %d\n", __func__,
+		    ep, ep->num_req, urb, urbstat);
+		finish_request(isp1362_hcd, ep, urb, urbstat);
+	}
+}
+
+static void finish_unlinks(struct isp1362_hcd *isp1362_hcd)
+{
+	struct isp1362_ep *ep;
+	struct isp1362_ep *tmp;
+
+	list_for_each_entry_safe(ep, tmp, &isp1362_hcd->remove_list, remove_list) {
+		struct isp1362_ep_queue *epq =
+			get_ptd_queue(isp1362_hcd, ep->ptd_offset);
+		int index = ep->ptd_index;
+
+		BUG_ON(epq == NULL);
+		if (index >= 0) {
+			DBG(1, "%s: remove PTD[%d] $%04x\n", __func__, index, ep->ptd_offset);
+			BUG_ON(ep->num_ptds == 0);
+			release_ptd_buffers(epq, ep);
+		}
+		if (!list_empty(&ep->hep->urb_list)) {
+			struct urb *urb = get_urb(ep);
+
+			DBG(1, "%s: Finishing req %d ep %p from remove_list\n", __func__,
+			    ep->num_req, ep);
+			finish_request(isp1362_hcd, ep, urb, -ESHUTDOWN);
+		}
+		WARN_ON(list_empty(&ep->active));
+		if (!list_empty(&ep->active)) {
+			list_del_init(&ep->active);
+			DBG(1, "%s: ep %p removed from active list\n", __func__, ep);
+		}
+		list_del_init(&ep->remove_list);
+		DBG(1, "%s: ep %p removed from remove_list\n", __func__, ep);
+	}
+	DBG(1, "%s: Done\n", __func__);
+}
+
+static inline void enable_atl_transfers(struct isp1362_hcd *isp1362_hcd, int count)
+{
+	if (count > 0) {
+		if (count < isp1362_hcd->atl_queue.ptd_count)
+			isp1362_write_reg16(isp1362_hcd, HCATLDTC, count);
+		isp1362_enable_int(isp1362_hcd, HCuPINT_ATL);
+		isp1362_write_reg32(isp1362_hcd, HCATLSKIP, isp1362_hcd->atl_queue.skip_map);
+		isp1362_set_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ATL_ACTIVE);
+	} else
+		isp1362_enable_int(isp1362_hcd, HCuPINT_SOF);
+}
+
+static inline void enable_intl_transfers(struct isp1362_hcd *isp1362_hcd)
+{
+	isp1362_enable_int(isp1362_hcd, HCuPINT_INTL);
+	isp1362_set_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_INTL_ACTIVE);
+	isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, isp1362_hcd->intl_queue.skip_map);
+}
+
+static inline void enable_istl_transfers(struct isp1362_hcd *isp1362_hcd, int flip)
+{
+	isp1362_enable_int(isp1362_hcd, flip ? HCuPINT_ISTL1 : HCuPINT_ISTL0);
+	isp1362_set_mask16(isp1362_hcd, HCBUFSTAT, flip ?
+			   HCBUFSTAT_ISTL1_FULL : HCBUFSTAT_ISTL0_FULL);
+}
+
+static int submit_req(struct isp1362_hcd *isp1362_hcd, struct urb *urb,
+		      struct isp1362_ep *ep, struct isp1362_ep_queue *epq)
+{
+	int index = epq->free_ptd;
+
+	prepare_ptd(isp1362_hcd, urb, ep, epq, 0);
+	index = claim_ptd_buffers(epq, ep, ep->length);
+	if (index == -ENOMEM) {
+		DBG(1, "%s: req %d No free %s PTD available: %d, %08lx:%08lx\n", __func__,
+		    ep->num_req, epq->name, ep->num_ptds, epq->buf_map, epq->skip_map);
+		return index;
+	} else if (index == -EOVERFLOW) {
+		DBG(1, "%s: req %d Not enough space for %d byte %s PTD %d %08lx:%08lx\n",
+		    __func__, ep->num_req, ep->length, epq->name, ep->num_ptds,
+		    epq->buf_map, epq->skip_map);
+		return index;
+	} else
+		BUG_ON(index < 0);
+	list_add_tail(&ep->active, &epq->active);
+	DBG(1, "%s: ep %p req %d len %d added to active list %p\n", __func__,
+	    ep, ep->num_req, ep->length, &epq->active);
+	DBG(1, "%s: Submitting %s PTD $%04x for ep %p req %d\n", __func__, epq->name,
+	    ep->ptd_offset, ep, ep->num_req);
+	isp1362_write_ptd(isp1362_hcd, ep, epq);
+	__clear_bit(ep->ptd_index, &epq->skip_map);
+
+	return 0;
+}
+
+static void start_atl_transfers(struct isp1362_hcd *isp1362_hcd)
+{
+	int ptd_count = 0;
+	struct isp1362_ep_queue *epq = &isp1362_hcd->atl_queue;
+	struct isp1362_ep *ep;
+	int defer = 0;
+
+	if (atomic_read(&epq->finishing)) {
+		DBG(1, "%s: finish_transfers is active for %s\n", __func__, epq->name);
+		return;
+	}
+
+	list_for_each_entry(ep, &isp1362_hcd->async, schedule) {
+		struct urb *urb = get_urb(ep);
+		int ret;
+
+		if (!list_empty(&ep->active)) {
+			DBG(2, "%s: Skipping active %s ep %p\n", __func__, epq->name, ep);
+			continue;
+		}
+
+		DBG(1, "%s: Processing %s ep %p req %d\n", __func__, epq->name,
+		    ep, ep->num_req);
+
+		ret = submit_req(isp1362_hcd, urb, ep, epq);
+		if (ret == -ENOMEM) {
+			defer = 1;
+			break;
+		} else if (ret == -EOVERFLOW) {
+			defer = 1;
+			continue;
+		}
+#ifdef BUGGY_PXA2XX_UDC_USBTEST
+		defer = ep->nextpid == USB_PID_SETUP;
+#endif
+		ptd_count++;
+	}
+
+	/* Avoid starving of endpoints */
+	if (isp1362_hcd->async.next != isp1362_hcd->async.prev) {
+		DBG(2, "%s: Cycling ASYNC schedule %d\n", __func__, ptd_count);
+		list_move(&isp1362_hcd->async, isp1362_hcd->async.next);
+	}
+	if (ptd_count || defer)
+		enable_atl_transfers(isp1362_hcd, defer ? 0 : ptd_count);
+
+	epq->ptd_count += ptd_count;
+	if (epq->ptd_count > epq->stat_maxptds) {
+		epq->stat_maxptds = epq->ptd_count;
+		DBG(0, "%s: max_ptds: %d\n", __func__, epq->stat_maxptds);
+	}
+}
+
+static void start_intl_transfers(struct isp1362_hcd *isp1362_hcd)
+{
+	int ptd_count = 0;
+	struct isp1362_ep_queue *epq = &isp1362_hcd->intl_queue;
+	struct isp1362_ep *ep;
+
+	if (atomic_read(&epq->finishing)) {
+		DBG(1, "%s: finish_transfers is active for %s\n", __func__, epq->name);
+		return;
+	}
+
+	list_for_each_entry(ep, &isp1362_hcd->periodic, schedule) {
+		struct urb *urb = get_urb(ep);
+		int ret;
+
+		if (!list_empty(&ep->active)) {
+			DBG(1, "%s: Skipping active %s ep %p\n", __func__,
+			    epq->name, ep);
+			continue;
+		}
+
+		DBG(1, "%s: Processing %s ep %p req %d\n", __func__,
+		    epq->name, ep, ep->num_req);
+		ret = submit_req(isp1362_hcd, urb, ep, epq);
+		if (ret == -ENOMEM)
+			break;
+		else if (ret == -EOVERFLOW)
+			continue;
+		ptd_count++;
+	}
+
+	if (ptd_count) {
+		static int last_count;
+
+		if (ptd_count != last_count) {
+			DBG(0, "%s: ptd_count: %d\n", __func__, ptd_count);
+			last_count = ptd_count;
+		}
+		enable_intl_transfers(isp1362_hcd);
+	}
+
+	epq->ptd_count += ptd_count;
+	if (epq->ptd_count > epq->stat_maxptds)
+		epq->stat_maxptds = epq->ptd_count;
+}
+
+static inline int next_ptd(struct isp1362_ep_queue *epq, struct isp1362_ep *ep)
+{
+	u16 ptd_offset = ep->ptd_offset;
+	int num_ptds = (ep->length + PTD_HEADER_SIZE + (epq->blk_size - 1)) / epq->blk_size;
+
+	DBG(2, "%s: PTD offset $%04x + %04x => %d * %04x -> $%04x\n", __func__, ptd_offset,
+	    ep->length, num_ptds, epq->blk_size, ptd_offset + num_ptds * epq->blk_size);
+
+	ptd_offset += num_ptds * epq->blk_size;
+	if (ptd_offset < epq->buf_start + epq->buf_size)
+		return ptd_offset;
+	else
+		return -ENOMEM;
+}
+
+static void start_iso_transfers(struct isp1362_hcd *isp1362_hcd)
+{
+	int ptd_count = 0;
+	int flip = isp1362_hcd->istl_flip;
+	struct isp1362_ep_queue *epq;
+	int ptd_offset;
+	struct isp1362_ep *ep;
+	struct isp1362_ep *tmp;
+	u16 fno = isp1362_read_reg32(isp1362_hcd, HCFMNUM);
+
+ fill2:
+	epq = &isp1362_hcd->istl_queue[flip];
+	if (atomic_read(&epq->finishing)) {
+		DBG(1, "%s: finish_transfers is active for %s\n", __func__, epq->name);
+		return;
+	}
+
+	if (!list_empty(&epq->active))
+		return;
+
+	ptd_offset = epq->buf_start;
+	list_for_each_entry_safe(ep, tmp, &isp1362_hcd->isoc, schedule) {
+		struct urb *urb = get_urb(ep);
+		s16 diff = fno - (u16)urb->start_frame;
+
+		DBG(1, "%s: Processing %s ep %p\n", __func__, epq->name, ep);
+
+		if (diff > urb->number_of_packets) {
+			/* time frame for this URB has elapsed */
+			finish_request(isp1362_hcd, ep, urb, -EOVERFLOW);
+			continue;
+		} else if (diff < -1) {
+			/* URB is not due in this frame or the next one.
+			 * Comparing with '-1' instead of '0' accounts for double
+			 * buffering in the ISP1362 which enables us to queue the PTD
+			 * one frame ahead of time
+			 */
+		} else if (diff == -1) {
+			/* submit PTD's that are due in the next frame */
+			prepare_ptd(isp1362_hcd, urb, ep, epq, fno);
+			if (ptd_offset + PTD_HEADER_SIZE + ep->length >
+			    epq->buf_start + epq->buf_size) {
+				pr_err("%s: Not enough ISO buffer space for %d byte PTD\n",
+				    __func__, ep->length);
+				continue;
+			}
+			ep->ptd_offset = ptd_offset;
+			list_add_tail(&ep->active, &epq->active);
+
+			ptd_offset = next_ptd(epq, ep);
+			if (ptd_offset < 0) {
+				pr_warning("%s: req %d No more %s PTD buffers available\n", __func__,
+				     ep->num_req, epq->name);
+				break;
+			}
+		}
+	}
+	list_for_each_entry(ep, &epq->active, active) {
+		if (epq->active.next == &ep->active)
+			ep->ptd.mps |= PTD_LAST_MSK;
+		isp1362_write_ptd(isp1362_hcd, ep, epq);
+		ptd_count++;
+	}
+
+	if (ptd_count)
+		enable_istl_transfers(isp1362_hcd, flip);
+
+	epq->ptd_count += ptd_count;
+	if (epq->ptd_count > epq->stat_maxptds)
+		epq->stat_maxptds = epq->ptd_count;
+
+	/* check, whether the second ISTL buffer may also be filled */
+	if (!(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) &
+	      (flip ? HCBUFSTAT_ISTL0_FULL : HCBUFSTAT_ISTL1_FULL))) {
+		fno++;
+		ptd_count = 0;
+		flip = 1 - flip;
+		goto fill2;
+	}
+}
+
+static void finish_transfers(struct isp1362_hcd *isp1362_hcd, unsigned long done_map,
+			     struct isp1362_ep_queue *epq)
+{
+	struct isp1362_ep *ep;
+	struct isp1362_ep *tmp;
+
+	if (list_empty(&epq->active)) {
+		DBG(1, "%s: Nothing to do for %s queue\n", __func__, epq->name);
+		return;
+	}
+
+	DBG(1, "%s: Finishing %s transfers %08lx\n", __func__, epq->name, done_map);
+
+	atomic_inc(&epq->finishing);
+	list_for_each_entry_safe(ep, tmp, &epq->active, active) {
+		int index = ep->ptd_index;
+
+		DBG(1, "%s: Checking %s PTD[%02x] $%04x\n", __func__, epq->name,
+		    index, ep->ptd_offset);
+
+		BUG_ON(index < 0);
+		if (__test_and_clear_bit(index, &done_map)) {
+			isp1362_read_ptd(isp1362_hcd, ep, epq);
+			epq->free_ptd = index;
+			BUG_ON(ep->num_ptds == 0);
+			release_ptd_buffers(epq, ep);
+
+			DBG(1, "%s: ep %p req %d removed from active list\n", __func__,
+			    ep, ep->num_req);
+			if (!list_empty(&ep->remove_list)) {
+				list_del_init(&ep->remove_list);
+				DBG(1, "%s: ep %p removed from remove list\n", __func__, ep);
+			}
+			DBG(1, "%s: Postprocessing %s ep %p req %d\n", __func__, epq->name,
+			    ep, ep->num_req);
+			postproc_ep(isp1362_hcd, ep);
+		}
+		if (!done_map)
+			break;
+	}
+	if (done_map)
+		pr_warning("%s: done_map not clear: %08lx:%08lx\n", __func__, done_map,
+		     epq->skip_map);
+	atomic_dec(&epq->finishing);
+}
+
+static void finish_iso_transfers(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep_queue *epq)
+{
+	struct isp1362_ep *ep;
+	struct isp1362_ep *tmp;
+
+	if (list_empty(&epq->active)) {
+		DBG(1, "%s: Nothing to do for %s queue\n", __func__, epq->name);
+		return;
+	}
+
+	DBG(1, "%s: Finishing %s transfers\n", __func__, epq->name);
+
+	atomic_inc(&epq->finishing);
+	list_for_each_entry_safe(ep, tmp, &epq->active, active) {
+		DBG(1, "%s: Checking PTD $%04x\n", __func__, ep->ptd_offset);
+
+		isp1362_read_ptd(isp1362_hcd, ep, epq);
+		DBG(1, "%s: Postprocessing %s ep %p\n", __func__, epq->name, ep);
+		postproc_ep(isp1362_hcd, ep);
+	}
+	WARN_ON(epq->blk_size != 0);
+	atomic_dec(&epq->finishing);
+}
+
+static irqreturn_t isp1362_irq(struct usb_hcd *hcd)
+{
+	int handled = 0;
+	struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd);
+	u16 irqstat;
+	u16 svc_mask;
+
+	spin_lock(&isp1362_hcd->lock);
+
+	BUG_ON(isp1362_hcd->irq_active++);
+
+	isp1362_write_reg16(isp1362_hcd, HCuPINTENB, 0);
+
+	irqstat = isp1362_read_reg16(isp1362_hcd, HCuPINT);
+	DBG(3, "%s: got IRQ %04x:%04x\n", __func__, irqstat, isp1362_hcd->irqenb);
+
+	/* only handle interrupts that are currently enabled */
+	irqstat &= isp1362_hcd->irqenb;
+	isp1362_write_reg16(isp1362_hcd, HCuPINT, irqstat);
+	svc_mask = irqstat;
+
+	if (irqstat & HCuPINT_SOF) {
+		isp1362_hcd->irqenb &= ~HCuPINT_SOF;
+		isp1362_hcd->irq_stat[ISP1362_INT_SOF]++;
+		handled = 1;
+		svc_mask &= ~HCuPINT_SOF;
+		DBG(3, "%s: SOF\n", __func__);
+		isp1362_hcd->fmindex = isp1362_read_reg32(isp1362_hcd, HCFMNUM);
+		if (!list_empty(&isp1362_hcd->remove_list))
+			finish_unlinks(isp1362_hcd);
+		if (!list_empty(&isp1362_hcd->async) && !(irqstat & HCuPINT_ATL)) {
+			if (list_empty(&isp1362_hcd->atl_queue.active)) {
+				start_atl_transfers(isp1362_hcd);
+			} else {
+				isp1362_enable_int(isp1362_hcd, HCuPINT_ATL);
+				isp1362_write_reg32(isp1362_hcd, HCATLSKIP,
+						    isp1362_hcd->atl_queue.skip_map);
+				isp1362_set_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ATL_ACTIVE);
+			}
+		}
+	}
+
+	if (irqstat & HCuPINT_ISTL0) {
+		isp1362_hcd->irq_stat[ISP1362_INT_ISTL0]++;
+		handled = 1;
+		svc_mask &= ~HCuPINT_ISTL0;
+		isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ISTL0_FULL);
+		DBG(1, "%s: ISTL0\n", __func__);
+		WARN_ON((int)!!isp1362_hcd->istl_flip);
+		WARN_ON(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) & HCBUFSTAT_ISTL0_ACTIVE);
+		WARN_ON(!isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) & HCBUFSTAT_ISTL0_DONE);
+		isp1362_hcd->irqenb &= ~HCuPINT_ISTL0;
+	}
+
+	if (irqstat & HCuPINT_ISTL1) {
+		isp1362_hcd->irq_stat[ISP1362_INT_ISTL1]++;
+		handled = 1;
+		svc_mask &= ~HCuPINT_ISTL1;
+		isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ISTL1_FULL);
+		DBG(1, "%s: ISTL1\n", __func__);
+		WARN_ON(!(int)isp1362_hcd->istl_flip);
+		WARN_ON(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) & HCBUFSTAT_ISTL1_ACTIVE);
+		WARN_ON(!isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) & HCBUFSTAT_ISTL1_DONE);
+		isp1362_hcd->irqenb &= ~HCuPINT_ISTL1;
+	}
+
+	if (irqstat & (HCuPINT_ISTL0 | HCuPINT_ISTL1)) {
+		WARN_ON((irqstat & (HCuPINT_ISTL0 | HCuPINT_ISTL1)) ==
+			(HCuPINT_ISTL0 | HCuPINT_ISTL1));
+		finish_iso_transfers(isp1362_hcd,
+				     &isp1362_hcd->istl_queue[isp1362_hcd->istl_flip]);
+		start_iso_transfers(isp1362_hcd);
+		isp1362_hcd->istl_flip = 1 - isp1362_hcd->istl_flip;
+	}
+
+	if (irqstat & HCuPINT_INTL) {
+		u32 done_map = isp1362_read_reg32(isp1362_hcd, HCINTLDONE);
+		u32 skip_map = isp1362_read_reg32(isp1362_hcd, HCINTLSKIP);
+		isp1362_hcd->irq_stat[ISP1362_INT_INTL]++;
+
+		DBG(2, "%s: INTL\n", __func__);
+
+		svc_mask &= ~HCuPINT_INTL;
+
+		isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, skip_map | done_map);
+		if (~(done_map | skip_map) == 0)
+			/* All PTDs are finished, disable INTL processing entirely */
+			isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_INTL_ACTIVE);
+
+		handled = 1;
+		WARN_ON(!done_map);
+		if (done_map) {
+			DBG(3, "%s: INTL done_map %08x\n", __func__, done_map);
+			finish_transfers(isp1362_hcd, done_map, &isp1362_hcd->intl_queue);
+			start_intl_transfers(isp1362_hcd);
+		}
+	}
+
+	if (irqstat & HCuPINT_ATL) {
+		u32 done_map = isp1362_read_reg32(isp1362_hcd, HCATLDONE);
+		u32 skip_map = isp1362_read_reg32(isp1362_hcd, HCATLSKIP);
+		isp1362_hcd->irq_stat[ISP1362_INT_ATL]++;
+
+		DBG(2, "%s: ATL\n", __func__);
+
+		svc_mask &= ~HCuPINT_ATL;
+
+		isp1362_write_reg32(isp1362_hcd, HCATLSKIP, skip_map | done_map);
+		if (~(done_map | skip_map) == 0)
+			isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ATL_ACTIVE);
+		if (done_map) {
+			DBG(3, "%s: ATL done_map %08x\n", __func__, done_map);
+			finish_transfers(isp1362_hcd, done_map, &isp1362_hcd->atl_queue);
+			start_atl_transfers(isp1362_hcd);
+		}
+		handled = 1;
+	}
+
+	if (irqstat & HCuPINT_OPR) {
+		u32 intstat = isp1362_read_reg32(isp1362_hcd, HCINTSTAT);
+		isp1362_hcd->irq_stat[ISP1362_INT_OPR]++;
+
+		svc_mask &= ~HCuPINT_OPR;
+		DBG(2, "%s: OPR %08x:%08x\n", __func__, intstat, isp1362_hcd->intenb);
+		intstat &= isp1362_hcd->intenb;
+		if (intstat & OHCI_INTR_UE) {
+			pr_err("Unrecoverable error\n");
+			/* FIXME: do here reset or cleanup or whatever */
+		}
+		if (intstat & OHCI_INTR_RHSC) {
+			isp1362_hcd->rhstatus = isp1362_read_reg32(isp1362_hcd, HCRHSTATUS);
+			isp1362_hcd->rhport[0] = isp1362_read_reg32(isp1362_hcd, HCRHPORT1);
+			isp1362_hcd->rhport[1] = isp1362_read_reg32(isp1362_hcd, HCRHPORT2);
+		}
+		if (intstat & OHCI_INTR_RD) {
+			pr_info("%s: RESUME DETECTED\n", __func__);
+			isp1362_show_reg(isp1362_hcd, HCCONTROL);
+			usb_hcd_resume_root_hub(hcd);
+		}
+		isp1362_write_reg32(isp1362_hcd, HCINTSTAT, intstat);
+		irqstat &= ~HCuPINT_OPR;
+		handled = 1;
+	}
+
+	if (irqstat & HCuPINT_SUSP) {
+		isp1362_hcd->irq_stat[ISP1362_INT_SUSP]++;
+		handled = 1;
+		svc_mask &= ~HCuPINT_SUSP;
+
+		pr_info("%s: SUSPEND IRQ\n", __func__);
+	}
+
+	if (irqstat & HCuPINT_CLKRDY) {
+		isp1362_hcd->irq_stat[ISP1362_INT_CLKRDY]++;
+		handled = 1;
+		isp1362_hcd->irqenb &= ~HCuPINT_CLKRDY;
+		svc_mask &= ~HCuPINT_CLKRDY;
+		pr_info("%s: CLKRDY IRQ\n", __func__);
+	}
+
+	if (svc_mask)
+		pr_err("%s: Unserviced interrupt(s) %04x\n", __func__, svc_mask);
+
+	isp1362_write_reg16(isp1362_hcd, HCuPINTENB, isp1362_hcd->irqenb);
+	isp1362_hcd->irq_active--;
+	spin_unlock(&isp1362_hcd->lock);
+
+	return IRQ_RETVAL(handled);
+}
+
+/*-------------------------------------------------------------------------*/
+
+#define	MAX_PERIODIC_LOAD	900	/* out of 1000 usec */
+static int balance(struct isp1362_hcd *isp1362_hcd, u16 interval, u16 load)
+{
+	int i, branch = -ENOSPC;
+
+	/* search for the least loaded schedule branch of that interval
+	 * which has enough bandwidth left unreserved.
+	 */
+	for (i = 0; i < interval; i++) {
+		if (branch < 0 || isp1362_hcd->load[branch] > isp1362_hcd->load[i]) {
+			int j;
+
+			for (j = i; j < PERIODIC_SIZE; j += interval) {
+				if ((isp1362_hcd->load[j] + load) > MAX_PERIODIC_LOAD) {
+					pr_err("%s: new load %d load[%02x] %d max %d\n", __func__,
+					    load, j, isp1362_hcd->load[j], MAX_PERIODIC_LOAD);
+					break;
+				}
+			}
+			if (j < PERIODIC_SIZE)
+				continue;
+			branch = i;
+		}
+	}
+	return branch;
+}
+
+/* NB! ALL the code above this point runs with isp1362_hcd->lock
+   held, irqs off
+*/
+
+/*-------------------------------------------------------------------------*/
+
+static int isp1362_urb_enqueue(struct usb_hcd *hcd,
+			       struct urb *urb,
+			       gfp_t mem_flags)
+{
+	struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd);
+	struct usb_device *udev = urb->dev;
+	unsigned int pipe = urb->pipe;
+	int is_out = !usb_pipein(pipe);
+	int type = usb_pipetype(pipe);
+	int epnum = usb_pipeendpoint(pipe);
+	struct usb_host_endpoint *hep = urb->ep;
+	struct isp1362_ep *ep = NULL;
+	unsigned long flags;
+	int retval = 0;
+
+	DBG(3, "%s: urb %p\n", __func__, urb);
+
+	if (type == PIPE_ISOCHRONOUS) {
+		pr_err("Isochronous transfers not supported\n");
+		return -ENOSPC;
+	}
+
+	URB_DBG("%s: FA %d ep%d%s %s: len %d %s%s\n", __func__,
+		usb_pipedevice(pipe), epnum,
+		is_out ? "out" : "in",
+		usb_pipecontrol(pipe) ? "ctrl" :
+			usb_pipeint(pipe) ? "int" :
+			usb_pipebulk(pipe) ? "bulk" :
+			"iso",
+		urb->transfer_buffer_length,
+		(urb->transfer_flags & URB_ZERO_PACKET) ? "ZERO_PACKET " : "",
+		!(urb->transfer_flags & URB_SHORT_NOT_OK) ?
+		"short_ok" : "");
+
+	/* avoid all allocations within spinlocks: request or endpoint */
+	if (!hep->hcpriv) {
+		ep = kcalloc(1, sizeof *ep, mem_flags);
+		if (!ep)
+			return -ENOMEM;
+	}
+	spin_lock_irqsave(&isp1362_hcd->lock, flags);
+
+	/* don't submit to a dead or disabled port */
+	if (!((isp1362_hcd->rhport[0] | isp1362_hcd->rhport[1]) &
+	      (1 << USB_PORT_FEAT_ENABLE)) ||
+	    !HC_IS_RUNNING(hcd->state)) {
+		kfree(ep);
+		retval = -ENODEV;
+		goto fail_not_linked;
+	}
+
+	retval = usb_hcd_link_urb_to_ep(hcd, urb);
+	if (retval) {
+		kfree(ep);
+		goto fail_not_linked;
+	}
+
+	if (hep->hcpriv) {
+		ep = hep->hcpriv;
+	} else {
+		INIT_LIST_HEAD(&ep->schedule);
+		INIT_LIST_HEAD(&ep->active);
+		INIT_LIST_HEAD(&ep->remove_list);
+		ep->udev = usb_get_dev(udev);
+		ep->hep = hep;
+		ep->epnum = epnum;
+		ep->maxpacket = usb_maxpacket(udev, urb->pipe, is_out);
+		ep->ptd_offset = -EINVAL;
+		ep->ptd_index = -EINVAL;
+		usb_settoggle(udev, epnum, is_out, 0);
+
+		if (type == PIPE_CONTROL)
+			ep->nextpid = USB_PID_SETUP;
+		else if (is_out)
+			ep->nextpid = USB_PID_OUT;
+		else
+			ep->nextpid = USB_PID_IN;
+
+		switch (type) {
+		case PIPE_ISOCHRONOUS:
+		case PIPE_INTERRUPT:
+			if (urb->interval > PERIODIC_SIZE)
+				urb->interval = PERIODIC_SIZE;
+			ep->interval = urb->interval;
+			ep->branch = PERIODIC_SIZE;
+			ep->load = usb_calc_bus_time(udev->speed, !is_out,
+						     (type == PIPE_ISOCHRONOUS),
+						     usb_maxpacket(udev, pipe, is_out)) / 1000;
+			break;
+		}
+		hep->hcpriv = ep;
+	}
+	ep->num_req = isp1362_hcd->req_serial++;
+
+	/* maybe put endpoint into schedule */
+	switch (type) {
+	case PIPE_CONTROL:
+	case PIPE_BULK:
+		if (list_empty(&ep->schedule)) {
+			DBG(1, "%s: Adding ep %p req %d to async schedule\n",
+				__func__, ep, ep->num_req);
+			list_add_tail(&ep->schedule, &isp1362_hcd->async);
+		}
+		break;
+	case PIPE_ISOCHRONOUS:
+	case PIPE_INTERRUPT:
+		urb->interval = ep->interval;
+
+		/* urb submitted for already existing EP */
+		if (ep->branch < PERIODIC_SIZE)
+			break;
+
+		retval = balance(isp1362_hcd, ep->interval, ep->load);
+		if (retval < 0) {
+			pr_err("%s: balance returned %d\n", __func__, retval);
+			goto fail;
+		}
+		ep->branch = retval;
+		retval = 0;
+		isp1362_hcd->fmindex = isp1362_read_reg32(isp1362_hcd, HCFMNUM);
+		DBG(1, "%s: Current frame %04x branch %02x start_frame %04x(%04x)\n",
+		    __func__, isp1362_hcd->fmindex, ep->branch,
+		    ((isp1362_hcd->fmindex + PERIODIC_SIZE - 1) &
+		     ~(PERIODIC_SIZE - 1)) + ep->branch,
+		    (isp1362_hcd->fmindex & (PERIODIC_SIZE - 1)) + ep->branch);
+
+		if (list_empty(&ep->schedule)) {
+			if (type == PIPE_ISOCHRONOUS) {
+				u16 frame = isp1362_hcd->fmindex;
+
+				frame += max_t(u16, 8, ep->interval);
+				frame &= ~(ep->interval - 1);
+				frame |= ep->branch;
+				if (frame_before(frame, isp1362_hcd->fmindex))
+					frame += ep->interval;
+				urb->start_frame = frame;
+
+				DBG(1, "%s: Adding ep %p to isoc schedule\n", __func__, ep);
+				list_add_tail(&ep->schedule, &isp1362_hcd->isoc);
+			} else {
+				DBG(1, "%s: Adding ep %p to periodic schedule\n", __func__, ep);
+				list_add_tail(&ep->schedule, &isp1362_hcd->periodic);
+			}
+		} else
+			DBG(1, "%s: ep %p already scheduled\n", __func__, ep);
+
+		DBG(2, "%s: load %d bandwidth %d -> %d\n", __func__,
+		    ep->load / ep->interval, isp1362_hcd->load[ep->branch],
+		    isp1362_hcd->load[ep->branch] + ep->load);
+		isp1362_hcd->load[ep->branch] += ep->load;
+	}
+
+	urb->hcpriv = hep;
+	ALIGNSTAT(isp1362_hcd, urb->transfer_buffer);
+
+	switch (type) {
+	case PIPE_CONTROL:
+	case PIPE_BULK:
+		start_atl_transfers(isp1362_hcd);
+		break;
+	case PIPE_INTERRUPT:
+		start_intl_transfers(isp1362_hcd);
+		break;
+	case PIPE_ISOCHRONOUS:
+		start_iso_transfers(isp1362_hcd);
+		break;
+	default:
+		BUG();
+	}
+ fail:
+	if (retval)
+		usb_hcd_unlink_urb_from_ep(hcd, urb);
+
+
+ fail_not_linked:
+	spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
+	if (retval)
+		DBG(0, "%s: urb %p failed with %d\n", __func__, urb, retval);
+	return retval;
+}
+
+static int isp1362_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
+{
+	struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd);
+	struct usb_host_endpoint *hep;
+	unsigned long flags;
+	struct isp1362_ep *ep;
+	int retval = 0;
+
+	DBG(3, "%s: urb %p\n", __func__, urb);
+
+	spin_lock_irqsave(&isp1362_hcd->lock, flags);
+	retval = usb_hcd_check_unlink_urb(hcd, urb, status);
+	if (retval)
+		goto done;
+
+	hep = urb->hcpriv;
+
+	if (!hep) {
+		spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
+		return -EIDRM;
+	}
+
+	ep = hep->hcpriv;
+	if (ep) {
+		/* In front of queue? */
+		if (ep->hep->urb_list.next == &urb->urb_list) {
+			if (!list_empty(&ep->active)) {
+				DBG(1, "%s: urb %p ep %p req %d active PTD[%d] $%04x\n", __func__,
+				    urb, ep, ep->num_req, ep->ptd_index, ep->ptd_offset);
+				/* disable processing and queue PTD for removal */
+				remove_ptd(isp1362_hcd, ep);
+				urb = NULL;
+			}
+		}
+		if (urb) {
+			DBG(1, "%s: Finishing ep %p req %d\n", __func__, ep,
+			    ep->num_req);
+			finish_request(isp1362_hcd, ep, urb, status);
+		} else
+			DBG(1, "%s: urb %p active; wait4irq\n", __func__, urb);
+	} else {
+		pr_warning("%s: No EP in URB %p\n", __func__, urb);
+		retval = -EINVAL;
+	}
+done:
+	spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
+
+	DBG(3, "%s: exit\n", __func__);
+
+	return retval;
+}
+
+static void isp1362_endpoint_disable(struct usb_hcd *hcd, struct usb_host_endpoint *hep)
+{
+	struct isp1362_ep *ep = hep->hcpriv;
+	struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd);
+	unsigned long flags;
+
+	DBG(1, "%s: ep %p\n", __func__, ep);
+	if (!ep)
+		return;
+	spin_lock_irqsave(&isp1362_hcd->lock, flags);
+	if (!list_empty(&hep->urb_list)) {
+		if (!list_empty(&ep->active) && list_empty(&ep->remove_list)) {
+			DBG(1, "%s: Removing ep %p req %d PTD[%d] $%04x\n", __func__,
+			    ep, ep->num_req, ep->ptd_index, ep->ptd_offset);
+			remove_ptd(isp1362_hcd, ep);
+			pr_info("%s: Waiting for Interrupt to clean up\n", __func__);
+		}
+	}
+	spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
+	/* Wait for interrupt to clear out active list */
+	while (!list_empty(&ep->active))
+		msleep(1);
+
+	DBG(1, "%s: Freeing EP %p\n", __func__, ep);
+
+	usb_put_dev(ep->udev);
+	kfree(ep);
+	hep->hcpriv = NULL;
+}
+
+static int isp1362_get_frame(struct usb_hcd *hcd)
+{
+	struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd);
+	u32 fmnum;
+	unsigned long flags;
+
+	spin_lock_irqsave(&isp1362_hcd->lock, flags);
+	fmnum = isp1362_read_reg32(isp1362_hcd, HCFMNUM);
+	spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
+
+	return (int)fmnum;
+}
+
+/*-------------------------------------------------------------------------*/
+
+/* Adapted from ohci-hub.c */
+static int isp1362_hub_status_data(struct usb_hcd *hcd, char *buf)
+{
+	struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd);
+	int ports, i, changed = 0;
+	unsigned long flags;
+
+	if (!HC_IS_RUNNING(hcd->state))
+		return -ESHUTDOWN;
+
+	/* Report no status change now, if we are scheduled to be
+	   called later */
+	if (timer_pending(&hcd->rh_timer))
+		return 0;
+
+	ports = isp1362_hcd->rhdesca & RH_A_NDP;
+	BUG_ON(ports > 2);
+
+	spin_lock_irqsave(&isp1362_hcd->lock, flags);
+	/* init status */
+	if (isp1362_hcd->rhstatus & (RH_HS_LPSC | RH_HS_OCIC))
+		buf[0] = changed = 1;
+	else
+		buf[0] = 0;
+
+	for (i = 0; i < ports; i++) {
+		u32 status = isp1362_hcd->rhport[i];
+
+		if (status & (RH_PS_CSC | RH_PS_PESC | RH_PS_PSSC |
+			      RH_PS_OCIC | RH_PS_PRSC)) {
+			changed = 1;
+			buf[0] |= 1 << (i + 1);
+			continue;
+		}
+
+		if (!(status & RH_PS_CCS))
+			continue;
+	}
+	spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
+	return changed;
+}
+
+static void isp1362_hub_descriptor(struct isp1362_hcd *isp1362_hcd,
+				   struct usb_hub_descriptor *desc)
+{
+	u32 reg = isp1362_hcd->rhdesca;
+
+	DBG(3, "%s: enter\n", __func__);
+
+	desc->bDescriptorType = 0x29;
+	desc->bDescLength = 9;
+	desc->bHubContrCurrent = 0;
+	desc->bNbrPorts = reg & 0x3;
+	/* Power switching, device type, overcurrent. */
+	desc->wHubCharacteristics = cpu_to_le16((reg >> 8) & 0x1f);
+	DBG(0, "%s: hubcharacteristics = %02x\n", __func__, cpu_to_le16((reg >> 8) & 0x1f));
+	desc->bPwrOn2PwrGood = (reg >> 24) & 0xff;
+	/* two bitmaps:  ports removable, and legacy PortPwrCtrlMask */
+	desc->bitmap[0] = desc->bNbrPorts == 1 ? 1 << 1 : 3 << 1;
+	desc->bitmap[1] = ~0;
+
+	DBG(3, "%s: exit\n", __func__);
+}
+
+/* Adapted from ohci-hub.c */
+static int isp1362_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
+			       u16 wIndex, char *buf, u16 wLength)
+{
+	struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd);
+	int retval = 0;
+	unsigned long flags;
+	unsigned long t1;
+	int ports = isp1362_hcd->rhdesca & RH_A_NDP;
+	u32 tmp = 0;
+
+	switch (typeReq) {
+	case ClearHubFeature:
+		DBG(0, "ClearHubFeature: ");
+		switch (wValue) {
+		case C_HUB_OVER_CURRENT:
+			_DBG(0, "C_HUB_OVER_CURRENT\n");
+			spin_lock_irqsave(&isp1362_hcd->lock, flags);
+			isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_OCIC);
+			spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
+		case C_HUB_LOCAL_POWER:
+			_DBG(0, "C_HUB_LOCAL_POWER\n");
+			break;
+		default:
+			goto error;
+		}
+		break;
+	case SetHubFeature:
+		DBG(0, "SetHubFeature: ");
+		switch (wValue) {
+		case C_HUB_OVER_CURRENT:
+		case C_HUB_LOCAL_POWER:
+			_DBG(0, "C_HUB_OVER_CURRENT or C_HUB_LOCAL_POWER\n");
+			break;
+		default:
+			goto error;
+		}
+		break;
+	case GetHubDescriptor:
+		DBG(0, "GetHubDescriptor\n");
+		isp1362_hub_descriptor(isp1362_hcd, (struct usb_hub_descriptor *)buf);
+		break;
+	case GetHubStatus:
+		DBG(0, "GetHubStatus\n");
+		put_unaligned(cpu_to_le32(0), (__le32 *) buf);
+		break;
+	case GetPortStatus:
+#ifndef VERBOSE
+		DBG(0, "GetPortStatus\n");
+#endif
+		if (!wIndex || wIndex > ports)
+			goto error;
+		tmp = isp1362_hcd->rhport[--wIndex];
+		put_unaligned(cpu_to_le32(tmp), (__le32 *) buf);
+		break;
+	case ClearPortFeature:
+		DBG(0, "ClearPortFeature: ");
+		if (!wIndex || wIndex > ports)
+			goto error;
+		wIndex--;
+
+		switch (wValue) {
+		case USB_PORT_FEAT_ENABLE:
+			_DBG(0, "USB_PORT_FEAT_ENABLE\n");
+			tmp = RH_PS_CCS;
+			break;
+		case USB_PORT_FEAT_C_ENABLE:
+			_DBG(0, "USB_PORT_FEAT_C_ENABLE\n");
+			tmp = RH_PS_PESC;
+			break;
+		case USB_PORT_FEAT_SUSPEND:
+			_DBG(0, "USB_PORT_FEAT_SUSPEND\n");
+			tmp = RH_PS_POCI;
+			break;
+		case USB_PORT_FEAT_C_SUSPEND:
+			_DBG(0, "USB_PORT_FEAT_C_SUSPEND\n");
+			tmp = RH_PS_PSSC;
+			break;
+		case USB_PORT_FEAT_POWER:
+			_DBG(0, "USB_PORT_FEAT_POWER\n");
+			tmp = RH_PS_LSDA;
+
+			break;
+		case USB_PORT_FEAT_C_CONNECTION:
+			_DBG(0, "USB_PORT_FEAT_C_CONNECTION\n");
+			tmp = RH_PS_CSC;
+			break;
+		case USB_PORT_FEAT_C_OVER_CURRENT:
+			_DBG(0, "USB_PORT_FEAT_C_OVER_CURRENT\n");
+			tmp = RH_PS_OCIC;
+			break;
+		case USB_PORT_FEAT_C_RESET:
+			_DBG(0, "USB_PORT_FEAT_C_RESET\n");
+			tmp = RH_PS_PRSC;
+			break;
+		default:
+			goto error;
+		}
+
+		spin_lock_irqsave(&isp1362_hcd->lock, flags);
+		isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + wIndex, tmp);
+		isp1362_hcd->rhport[wIndex] =
+			isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + wIndex);
+		spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
+		break;
+	case SetPortFeature:
+		DBG(0, "SetPortFeature: ");
+		if (!wIndex || wIndex > ports)
+			goto error;
+		wIndex--;
+		switch (wValue) {
+		case USB_PORT_FEAT_SUSPEND:
+			_DBG(0, "USB_PORT_FEAT_SUSPEND\n");
+#ifdef	CONFIG_USB_OTG
+			if (ohci->hcd.self.otg_port == (wIndex + 1) &&
+			    ohci->hcd.self.b_hnp_enable) {
+				start_hnp(ohci);
+				break;
+			}
+#endif
+			spin_lock_irqsave(&isp1362_hcd->lock, flags);
+			isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + wIndex, RH_PS_PSS);
+			isp1362_hcd->rhport[wIndex] =
+				isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + wIndex);
+			spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
+			break;
+		case USB_PORT_FEAT_POWER:
+			_DBG(0, "USB_PORT_FEAT_POWER\n");
+			spin_lock_irqsave(&isp1362_hcd->lock, flags);
+			isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + wIndex, RH_PS_PPS);
+			isp1362_hcd->rhport[wIndex] =
+				isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + wIndex);
+			spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
+			break;
+		case USB_PORT_FEAT_RESET:
+			_DBG(0, "USB_PORT_FEAT_RESET\n");
+			spin_lock_irqsave(&isp1362_hcd->lock, flags);
+
+			t1 = jiffies + msecs_to_jiffies(USB_RESET_WIDTH);
+			while (time_before(jiffies, t1)) {
+				/* spin until any current reset finishes */
+				for (;;) {
+					tmp = isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + wIndex);
+					if (!(tmp & RH_PS_PRS))
+						break;
+					udelay(500);
+				}
+				if (!(tmp & RH_PS_CCS))
+					break;
+				/* Reset lasts 10ms (claims datasheet) */
+				isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + wIndex, (RH_PS_PRS));
+
+				spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
+				msleep(10);
+				spin_lock_irqsave(&isp1362_hcd->lock, flags);
+			}
+
+			isp1362_hcd->rhport[wIndex] = isp1362_read_reg32(isp1362_hcd,
+									 HCRHPORT1 + wIndex);
+			spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
+			break;
+		default:
+			goto error;
+		}
+		break;
+
+	default:
+ error:
+		/* "protocol stall" on error */
+		_DBG(0, "PROTOCOL STALL\n");
+		retval = -EPIPE;
+	}
+
+	return retval;
+}
+
+#ifdef	CONFIG_PM
+static int isp1362_bus_suspend(struct usb_hcd *hcd)
+{
+	int status = 0;
+	struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd);
+	unsigned long flags;
+
+	if (time_before(jiffies, isp1362_hcd->next_statechange))
+		msleep(5);
+
+	spin_lock_irqsave(&isp1362_hcd->lock, flags);
+
+	isp1362_hcd->hc_control = isp1362_read_reg32(isp1362_hcd, HCCONTROL);
+	switch (isp1362_hcd->hc_control & OHCI_CTRL_HCFS) {
+	case OHCI_USB_RESUME:
+		DBG(0, "%s: resume/suspend?\n", __func__);
+		isp1362_hcd->hc_control &= ~OHCI_CTRL_HCFS;
+		isp1362_hcd->hc_control |= OHCI_USB_RESET;
+		isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control);
+		/* FALL THROUGH */
+	case OHCI_USB_RESET:
+		status = -EBUSY;
+		pr_warning("%s: needs reinit!\n", __func__);
+		goto done;
+	case OHCI_USB_SUSPEND:
+		pr_warning("%s: already suspended?\n", __func__);
+		goto done;
+	}
+	DBG(0, "%s: suspend root hub\n", __func__);
+
+	/* First stop any processing */
+	hcd->state = HC_STATE_QUIESCING;
+	if (!list_empty(&isp1362_hcd->atl_queue.active) ||
+	    !list_empty(&isp1362_hcd->intl_queue.active) ||
+	    !list_empty(&isp1362_hcd->istl_queue[0] .active) ||
+	    !list_empty(&isp1362_hcd->istl_queue[1] .active)) {
+		int limit;
+
+		isp1362_write_reg32(isp1362_hcd, HCATLSKIP, ~0);
+		isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, ~0);
+		isp1362_write_reg16(isp1362_hcd, HCBUFSTAT, 0);
+		isp1362_write_reg16(isp1362_hcd, HCuPINTENB, 0);
+		isp1362_write_reg32(isp1362_hcd, HCINTSTAT, OHCI_INTR_SF);
+
+		DBG(0, "%s: stopping schedules ...\n", __func__);
+		limit = 2000;
+		while (limit > 0) {
+			udelay(250);
+			limit -= 250;
+			if (isp1362_read_reg32(isp1362_hcd, HCINTSTAT) & OHCI_INTR_SF)
+				break;
+		}
+		mdelay(7);
+		if (isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_ATL) {
+			u32 done_map = isp1362_read_reg32(isp1362_hcd, HCATLDONE);
+			finish_transfers(isp1362_hcd, done_map, &isp1362_hcd->atl_queue);
+		}
+		if (isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_INTL) {
+			u32 done_map = isp1362_read_reg32(isp1362_hcd, HCINTLDONE);
+			finish_transfers(isp1362_hcd, done_map, &isp1362_hcd->intl_queue);
+		}
+		if (isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_ISTL0)
+			finish_iso_transfers(isp1362_hcd, &isp1362_hcd->istl_queue[0]);
+		if (isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_ISTL1)
+			finish_iso_transfers(isp1362_hcd, &isp1362_hcd->istl_queue[1]);
+	}
+	DBG(0, "%s: HCINTSTAT: %08x\n", __func__,
+		    isp1362_read_reg32(isp1362_hcd, HCINTSTAT));
+	isp1362_write_reg32(isp1362_hcd, HCINTSTAT,
+			    isp1362_read_reg32(isp1362_hcd, HCINTSTAT));
+
+	/* Suspend hub */
+	isp1362_hcd->hc_control = OHCI_USB_SUSPEND;
+	isp1362_show_reg(isp1362_hcd, HCCONTROL);
+	isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control);
+	isp1362_show_reg(isp1362_hcd, HCCONTROL);
+
+#if 1
+	isp1362_hcd->hc_control = isp1362_read_reg32(isp1362_hcd, HCCONTROL);
+	if ((isp1362_hcd->hc_control & OHCI_CTRL_HCFS) != OHCI_USB_SUSPEND) {
+		pr_err("%s: controller won't suspend %08x\n", __func__,
+		    isp1362_hcd->hc_control);
+		status = -EBUSY;
+	} else
+#endif
+	{
+		/* no resumes until devices finish suspending */
+		isp1362_hcd->next_statechange = jiffies + msecs_to_jiffies(5);
+	}
+done:
+	if (status == 0) {
+		hcd->state = HC_STATE_SUSPENDED;
+		DBG(0, "%s: HCD suspended: %08x\n", __func__,
+		    isp1362_read_reg32(isp1362_hcd, HCCONTROL));
+	}
+	spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
+	return status;
+}
+
+static int isp1362_bus_resume(struct usb_hcd *hcd)
+{
+	struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd);
+	u32 port;
+	unsigned long flags;
+	int status = -EINPROGRESS;
+
+	if (time_before(jiffies, isp1362_hcd->next_statechange))
+		msleep(5);
+
+	spin_lock_irqsave(&isp1362_hcd->lock, flags);
+	isp1362_hcd->hc_control = isp1362_read_reg32(isp1362_hcd, HCCONTROL);
+	pr_info("%s: HCCONTROL: %08x\n", __func__, isp1362_hcd->hc_control);
+	if (hcd->state == HC_STATE_RESUMING) {
+		pr_warning("%s: duplicate resume\n", __func__);
+		status = 0;
+	} else
+		switch (isp1362_hcd->hc_control & OHCI_CTRL_HCFS) {
+		case OHCI_USB_SUSPEND:
+			DBG(0, "%s: resume root hub\n", __func__);
+			isp1362_hcd->hc_control &= ~OHCI_CTRL_HCFS;
+			isp1362_hcd->hc_control |= OHCI_USB_RESUME;
+			isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control);
+			break;
+		case OHCI_USB_RESUME:
+			/* HCFS changes sometime after INTR_RD */
+			DBG(0, "%s: remote wakeup\n", __func__);
+			break;
+		case OHCI_USB_OPER:
+			DBG(0, "%s: odd resume\n", __func__);
+			status = 0;
+			hcd->self.root_hub->dev.power.power_state = PMSG_ON;
+			break;
+		default:		/* RESET, we lost power */
+			DBG(0, "%s: root hub hardware reset\n", __func__);
+			status = -EBUSY;
+		}
+	spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
+	if (status == -EBUSY) {
+		DBG(0, "%s: Restarting HC\n", __func__);
+		isp1362_hc_stop(hcd);
+		return isp1362_hc_start(hcd);
+	}
+	if (status != -EINPROGRESS)
+		return status;
+	spin_lock_irqsave(&isp1362_hcd->lock, flags);
+	port = isp1362_read_reg32(isp1362_hcd, HCRHDESCA) & RH_A_NDP;
+	while (port--) {
+		u32 stat = isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + port);
+
+		/* force global, not selective, resume */
+		if (!(stat & RH_PS_PSS)) {
+			DBG(0, "%s: Not Resuming RH port %d\n", __func__, port);
+			continue;
+		}
+		DBG(0, "%s: Resuming RH port %d\n", __func__, port);
+		isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + port, RH_PS_POCI);
+	}
+	spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
+
+	/* Some controllers (lucent) need extra-long delays */
+	hcd->state = HC_STATE_RESUMING;
+	mdelay(20 /* usb 11.5.1.10 */ + 15);
+
+	isp1362_hcd->hc_control = OHCI_USB_OPER;
+	spin_lock_irqsave(&isp1362_hcd->lock, flags);
+	isp1362_show_reg(isp1362_hcd, HCCONTROL);
+	isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control);
+	spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
+	/* TRSMRCY */
+	msleep(10);
+
+	/* keep it alive for ~5x suspend + resume costs */
+	isp1362_hcd->next_statechange = jiffies + msecs_to_jiffies(250);
+
+	hcd->self.root_hub->dev.power.power_state = PMSG_ON;
+	hcd->state = HC_STATE_RUNNING;
+	return 0;
+}
+#else
+#define	isp1362_bus_suspend	NULL
+#define	isp1362_bus_resume	NULL
+#endif
+
+/*-------------------------------------------------------------------------*/
+
+#ifdef STUB_DEBUG_FILE
+
+static inline void create_debug_file(struct isp1362_hcd *isp1362_hcd)
+{
+}
+static inline void remove_debug_file(struct isp1362_hcd *isp1362_hcd)
+{
+}
+
+#else
+
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+
+static void dump_irq(struct seq_file *s, char *label, u16 mask)
+{
+	seq_printf(s, "%-15s %04x%s%s%s%s%s%s\n", label, mask,
+		   mask & HCuPINT_CLKRDY ? " clkrdy" : "",
+		   mask & HCuPINT_SUSP ? " susp" : "",
+		   mask & HCuPINT_OPR ? " opr" : "",
+		   mask & HCuPINT_EOT ? " eot" : "",
+		   mask & HCuPINT_ATL ? " atl" : "",
+		   mask & HCuPINT_SOF ? " sof" : "");
+}
+
+static void dump_int(struct seq_file *s, char *label, u32 mask)
+{
+	seq_printf(s, "%-15s %08x%s%s%s%s%s%s%s\n", label, mask,
+		   mask & OHCI_INTR_MIE ? " MIE" : "",
+		   mask & OHCI_INTR_RHSC ? " rhsc" : "",
+		   mask & OHCI_INTR_FNO ? " fno" : "",
+		   mask & OHCI_INTR_UE ? " ue" : "",
+		   mask & OHCI_INTR_RD ? " rd" : "",
+		   mask & OHCI_INTR_SF ? " sof" : "",
+		   mask & OHCI_INTR_SO ? " so" : "");
+}
+
+static void dump_ctrl(struct seq_file *s, char *label, u32 mask)
+{
+	seq_printf(s, "%-15s %08x%s%s%s\n", label, mask,
+		   mask & OHCI_CTRL_RWC ? " rwc" : "",
+		   mask & OHCI_CTRL_RWE ? " rwe" : "",
+		   ({
+			   char *hcfs;
+			   switch (mask & OHCI_CTRL_HCFS) {
+			   case OHCI_USB_OPER:
+				   hcfs = " oper";
+				   break;
+			   case OHCI_USB_RESET:
+				   hcfs = " reset";
+				   break;
+			   case OHCI_USB_RESUME:
+				   hcfs = " resume";
+				   break;
+			   case OHCI_USB_SUSPEND:
+				   hcfs = " suspend";
+				   break;
+			   default:
+				   hcfs = " ?";
+			   }
+			   hcfs;
+		   }));
+}
+
+static void dump_regs(struct seq_file *s, struct isp1362_hcd *isp1362_hcd)
+{
+	seq_printf(s, "HCREVISION [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCREVISION),
+		   isp1362_read_reg32(isp1362_hcd, HCREVISION));
+	seq_printf(s, "HCCONTROL  [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCCONTROL),
+		   isp1362_read_reg32(isp1362_hcd, HCCONTROL));
+	seq_printf(s, "HCCMDSTAT  [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCCMDSTAT),
+		   isp1362_read_reg32(isp1362_hcd, HCCMDSTAT));
+	seq_printf(s, "HCINTSTAT  [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTSTAT),
+		   isp1362_read_reg32(isp1362_hcd, HCINTSTAT));
+	seq_printf(s, "HCINTENB   [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTENB),
+		   isp1362_read_reg32(isp1362_hcd, HCINTENB));
+	seq_printf(s, "HCFMINTVL  [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCFMINTVL),
+		   isp1362_read_reg32(isp1362_hcd, HCFMINTVL));
+	seq_printf(s, "HCFMREM    [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCFMREM),
+		   isp1362_read_reg32(isp1362_hcd, HCFMREM));
+	seq_printf(s, "HCFMNUM    [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCFMNUM),
+		   isp1362_read_reg32(isp1362_hcd, HCFMNUM));
+	seq_printf(s, "HCLSTHRESH [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCLSTHRESH),
+		   isp1362_read_reg32(isp1362_hcd, HCLSTHRESH));
+	seq_printf(s, "HCRHDESCA  [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHDESCA),
+		   isp1362_read_reg32(isp1362_hcd, HCRHDESCA));
+	seq_printf(s, "HCRHDESCB  [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHDESCB),
+		   isp1362_read_reg32(isp1362_hcd, HCRHDESCB));
+	seq_printf(s, "HCRHSTATUS [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHSTATUS),
+		   isp1362_read_reg32(isp1362_hcd, HCRHSTATUS));
+	seq_printf(s, "HCRHPORT1  [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHPORT1),
+		   isp1362_read_reg32(isp1362_hcd, HCRHPORT1));
+	seq_printf(s, "HCRHPORT2  [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHPORT2),
+		   isp1362_read_reg32(isp1362_hcd, HCRHPORT2));
+	seq_printf(s, "\n");
+	seq_printf(s, "HCHWCFG    [%02x]     %04x\n", ISP1362_REG_NO(ISP1362_REG_HCHWCFG),
+		   isp1362_read_reg16(isp1362_hcd, HCHWCFG));
+	seq_printf(s, "HCDMACFG   [%02x]     %04x\n", ISP1362_REG_NO(ISP1362_REG_HCDMACFG),
+		   isp1362_read_reg16(isp1362_hcd, HCDMACFG));
+	seq_printf(s, "HCXFERCTR  [%02x]     %04x\n", ISP1362_REG_NO(ISP1362_REG_HCXFERCTR),
+		   isp1362_read_reg16(isp1362_hcd, HCXFERCTR));
+	seq_printf(s, "HCuPINT    [%02x]     %04x\n", ISP1362_REG_NO(ISP1362_REG_HCuPINT),
+		   isp1362_read_reg16(isp1362_hcd, HCuPINT));
+	seq_printf(s, "HCuPINTENB [%02x]     %04x\n", ISP1362_REG_NO(ISP1362_REG_HCuPINTENB),
+		   isp1362_read_reg16(isp1362_hcd, HCuPINTENB));
+	seq_printf(s, "HCCHIPID   [%02x]     %04x\n", ISP1362_REG_NO(ISP1362_REG_HCCHIPID),
+		   isp1362_read_reg16(isp1362_hcd, HCCHIPID));
+	seq_printf(s, "HCSCRATCH  [%02x]     %04x\n", ISP1362_REG_NO(ISP1362_REG_HCSCRATCH),
+		   isp1362_read_reg16(isp1362_hcd, HCSCRATCH));
+	seq_printf(s, "HCBUFSTAT  [%02x]     %04x\n", ISP1362_REG_NO(ISP1362_REG_HCBUFSTAT),
+		   isp1362_read_reg16(isp1362_hcd, HCBUFSTAT));
+	seq_printf(s, "HCDIRADDR  [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCDIRADDR),
+		   isp1362_read_reg32(isp1362_hcd, HCDIRADDR));
+#if 0
+	seq_printf(s, "HCDIRDATA  [%02x]     %04x\n", ISP1362_REG_NO(HCDIRDATA),
+		   isp1362_read_reg16(isp1362_hcd, HCDIRDATA));
+#endif
+	seq_printf(s, "HCISTLBUFSZ[%02x]     %04x\n", ISP1362_REG_NO(ISP1362_REG_HCISTLBUFSZ),
+		   isp1362_read_reg16(isp1362_hcd, HCISTLBUFSZ));
+	seq_printf(s, "HCISTLRATE [%02x]     %04x\n", ISP1362_REG_NO(ISP1362_REG_HCISTLRATE),
+		   isp1362_read_reg16(isp1362_hcd, HCISTLRATE));
+	seq_printf(s, "\n");
+	seq_printf(s, "HCINTLBUFSZ[%02x]     %04x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLBUFSZ),
+		   isp1362_read_reg16(isp1362_hcd, HCINTLBUFSZ));
+	seq_printf(s, "HCINTLBLKSZ[%02x]     %04x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLBLKSZ),
+		   isp1362_read_reg16(isp1362_hcd, HCINTLBLKSZ));
+	seq_printf(s, "HCINTLDONE [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLDONE),
+		   isp1362_read_reg32(isp1362_hcd, HCINTLDONE));
+	seq_printf(s, "HCINTLSKIP [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLSKIP),
+		   isp1362_read_reg32(isp1362_hcd, HCINTLSKIP));
+	seq_printf(s, "HCINTLLAST [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLLAST),
+		   isp1362_read_reg32(isp1362_hcd, HCINTLLAST));
+	seq_printf(s, "HCINTLCURR [%02x]     %04x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLCURR),
+		   isp1362_read_reg16(isp1362_hcd, HCINTLCURR));
+	seq_printf(s, "\n");
+	seq_printf(s, "HCATLBUFSZ [%02x]     %04x\n", ISP1362_REG_NO(ISP1362_REG_HCATLBUFSZ),
+		   isp1362_read_reg16(isp1362_hcd, HCATLBUFSZ));
+	seq_printf(s, "HCATLBLKSZ [%02x]     %04x\n", ISP1362_REG_NO(ISP1362_REG_HCATLBLKSZ),
+		   isp1362_read_reg16(isp1362_hcd, HCATLBLKSZ));
+#if 0
+	seq_printf(s, "HCATLDONE  [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCATLDONE),
+		   isp1362_read_reg32(isp1362_hcd, HCATLDONE));
+#endif
+	seq_printf(s, "HCATLSKIP  [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCATLSKIP),
+		   isp1362_read_reg32(isp1362_hcd, HCATLSKIP));
+	seq_printf(s, "HCATLLAST  [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCATLLAST),
+		   isp1362_read_reg32(isp1362_hcd, HCATLLAST));
+	seq_printf(s, "HCATLCURR  [%02x]     %04x\n", ISP1362_REG_NO(ISP1362_REG_HCATLCURR),
+		   isp1362_read_reg16(isp1362_hcd, HCATLCURR));
+	seq_printf(s, "\n");
+	seq_printf(s, "HCATLDTC   [%02x]     %04x\n", ISP1362_REG_NO(ISP1362_REG_HCATLDTC),
+		   isp1362_read_reg16(isp1362_hcd, HCATLDTC));
+	seq_printf(s, "HCATLDTCTO [%02x]     %04x\n", ISP1362_REG_NO(ISP1362_REG_HCATLDTCTO),
+		   isp1362_read_reg16(isp1362_hcd, HCATLDTCTO));
+}
+
+static int proc_isp1362_show(struct seq_file *s, void *unused)
+{
+	struct isp1362_hcd *isp1362_hcd = s->private;
+	struct isp1362_ep *ep;
+	int i;
+
+	seq_printf(s, "%s\n%s version %s\n",
+		   isp1362_hcd_to_hcd(isp1362_hcd)->product_desc, hcd_name, DRIVER_VERSION);
+
+	/* collect statistics to help estimate potential win for
+	 * DMA engines that care about alignment (PXA)
+	 */
+	seq_printf(s, "alignment:  16b/%ld 8b/%ld 4b/%ld 2b/%ld 1b/%ld\n",
+		   isp1362_hcd->stat16, isp1362_hcd->stat8, isp1362_hcd->stat4,
+		   isp1362_hcd->stat2, isp1362_hcd->stat1);
+	seq_printf(s, "max # ptds in ATL  fifo: %d\n", isp1362_hcd->atl_queue.stat_maxptds);
+	seq_printf(s, "max # ptds in INTL fifo: %d\n", isp1362_hcd->intl_queue.stat_maxptds);
+	seq_printf(s, "max # ptds in ISTL fifo: %d\n",
+		   max(isp1362_hcd->istl_queue[0] .stat_maxptds,
+		       isp1362_hcd->istl_queue[1] .stat_maxptds));
+
+	/* FIXME: don't show the following in suspended state */
+	spin_lock_irq(&isp1362_hcd->lock);
+
+	dump_irq(s, "hc_irq_enable", isp1362_read_reg16(isp1362_hcd, HCuPINTENB));
+	dump_irq(s, "hc_irq_status", isp1362_read_reg16(isp1362_hcd, HCuPINT));
+	dump_int(s, "ohci_int_enable", isp1362_read_reg32(isp1362_hcd, HCINTENB));
+	dump_int(s, "ohci_int_status", isp1362_read_reg32(isp1362_hcd, HCINTSTAT));
+	dump_ctrl(s, "ohci_control", isp1362_read_reg32(isp1362_hcd, HCCONTROL));
+
+	for (i = 0; i < NUM_ISP1362_IRQS; i++)
+		if (isp1362_hcd->irq_stat[i])
+			seq_printf(s, "%-15s: %d\n",
+				   ISP1362_INT_NAME(i), isp1362_hcd->irq_stat[i]);
+
+	dump_regs(s, isp1362_hcd);
+	list_for_each_entry(ep, &isp1362_hcd->async, schedule) {
+		struct urb *urb;
+
+		seq_printf(s, "%p, ep%d%s, maxpacket %d:\n", ep, ep->epnum,
+			   ({
+				   char *s;
+				   switch (ep->nextpid) {
+				   case USB_PID_IN:
+					   s = "in";
+					   break;
+				   case USB_PID_OUT:
+					   s = "out";
+					   break;
+				   case USB_PID_SETUP:
+					   s = "setup";
+					   break;
+				   case USB_PID_ACK:
+					   s = "status";
+					   break;
+				   default:
+					   s = "?";
+					   break;
+				   };
+				   s;}), ep->maxpacket) ;
+		list_for_each_entry(urb, &ep->hep->urb_list, urb_list) {
+			seq_printf(s, "  urb%p, %d/%d\n", urb,
+				   urb->actual_length,
+				   urb->transfer_buffer_length);
+		}
+	}
+	if (!list_empty(&isp1362_hcd->async))
+		seq_printf(s, "\n");
+	dump_ptd_queue(&isp1362_hcd->atl_queue);
+
+	seq_printf(s, "periodic size= %d\n", PERIODIC_SIZE);
+
+	list_for_each_entry(ep, &isp1362_hcd->periodic, schedule) {
+		seq_printf(s, "branch:%2d load:%3d PTD[%d] $%04x:\n", ep->branch,
+			   isp1362_hcd->load[ep->branch], ep->ptd_index, ep->ptd_offset);
+
+		seq_printf(s, "   %d/%p (%sdev%d ep%d%s max %d)\n",
+			   ep->interval, ep,
+			   (ep->udev->speed == USB_SPEED_FULL) ? "" : "ls ",
+			   ep->udev->devnum, ep->epnum,
+			   (ep->epnum == 0) ? "" :
+			   ((ep->nextpid == USB_PID_IN) ?
+			    "in" : "out"), ep->maxpacket);
+	}
+	dump_ptd_queue(&isp1362_hcd->intl_queue);
+
+	seq_printf(s, "ISO:\n");
+
+	list_for_each_entry(ep, &isp1362_hcd->isoc, schedule) {
+		seq_printf(s, "   %d/%p (%sdev%d ep%d%s max %d)\n",
+			   ep->interval, ep,
+			   (ep->udev->speed == USB_SPEED_FULL) ? "" : "ls ",
+			   ep->udev->devnum, ep->epnum,
+			   (ep->epnum == 0) ? "" :
+			   ((ep->nextpid == USB_PID_IN) ?
+			    "in" : "out"), ep->maxpacket);
+	}
+
+	spin_unlock_irq(&isp1362_hcd->lock);
+	seq_printf(s, "\n");
+
+	return 0;
+}
+
+static int proc_isp1362_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, proc_isp1362_show, PDE(inode)->data);
+}
+
+static const struct file_operations proc_ops = {
+	.open = proc_isp1362_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+};
+
+/* expect just one isp1362_hcd per system */
+static const char proc_filename[] = "driver/isp1362";
+
+static void create_debug_file(struct isp1362_hcd *isp1362_hcd)
+{
+	struct proc_dir_entry *pde;
+
+	pde = create_proc_entry(proc_filename, 0, NULL);
+	if (pde == NULL) {
+		pr_warning("%s: Failed to create debug file '%s'\n", __func__, proc_filename);
+		return;
+	}
+
+	pde->proc_fops = &proc_ops;
+	pde->data = isp1362_hcd;
+	isp1362_hcd->pde = pde;
+}
+
+static void remove_debug_file(struct isp1362_hcd *isp1362_hcd)
+{
+	if (isp1362_hcd->pde)
+		remove_proc_entry(proc_filename, 0);
+}
+
+#endif
+
+/*-------------------------------------------------------------------------*/
+
+static void isp1362_sw_reset(struct isp1362_hcd *isp1362_hcd)
+{
+	int tmp = 20;
+	unsigned long flags;
+
+	spin_lock_irqsave(&isp1362_hcd->lock, flags);
+
+	isp1362_write_reg16(isp1362_hcd, HCSWRES, HCSWRES_MAGIC);
+	isp1362_write_reg32(isp1362_hcd, HCCMDSTAT, OHCI_HCR);
+	while (--tmp) {
+		mdelay(1);
+		if (!(isp1362_read_reg32(isp1362_hcd, HCCMDSTAT) & OHCI_HCR))
+			break;
+	}
+	if (!tmp)
+		pr_err("Software reset timeout\n");
+	spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
+}
+
+static int isp1362_mem_config(struct usb_hcd *hcd)
+{
+	struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd);
+	unsigned long flags;
+	u32 total;
+	u16 istl_size = ISP1362_ISTL_BUFSIZE;
+	u16 intl_blksize = ISP1362_INTL_BLKSIZE + PTD_HEADER_SIZE;
+	u16 intl_size = ISP1362_INTL_BUFFERS * intl_blksize;
+	u16 atl_blksize = ISP1362_ATL_BLKSIZE + PTD_HEADER_SIZE;
+	u16 atl_buffers = (ISP1362_BUF_SIZE - (istl_size + intl_size)) / atl_blksize;
+	u16 atl_size;
+	int i;
+
+	WARN_ON(istl_size & 3);
+	WARN_ON(atl_blksize & 3);
+	WARN_ON(intl_blksize & 3);
+	WARN_ON(atl_blksize < PTD_HEADER_SIZE);
+	WARN_ON(intl_blksize < PTD_HEADER_SIZE);
+
+	BUG_ON((unsigned)ISP1362_INTL_BUFFERS > 32);
+	if (atl_buffers > 32)
+		atl_buffers = 32;
+	atl_size = atl_buffers * atl_blksize;
+	total = atl_size + intl_size + istl_size;
+	dev_info(hcd->self.controller, "ISP1362 Memory usage:\n");
+	dev_info(hcd->self.controller, "  ISTL:    2 * %4d:     %4d @ $%04x:$%04x\n",
+		 istl_size / 2, istl_size, 0, istl_size / 2);
+	dev_info(hcd->self.controller, "  INTL: %4d * (%3u+8):  %4d @ $%04x\n",
+		 ISP1362_INTL_BUFFERS, intl_blksize - PTD_HEADER_SIZE,
+		 intl_size, istl_size);
+	dev_info(hcd->self.controller, "  ATL : %4d * (%3u+8):  %4d @ $%04x\n",
+		 atl_buffers, atl_blksize - PTD_HEADER_SIZE,
+		 atl_size, istl_size + intl_size);
+	dev_info(hcd->self.controller, "  USED/FREE:   %4d      %4d\n", total,
+		 ISP1362_BUF_SIZE - total);
+
+	if (total > ISP1362_BUF_SIZE) {
+		dev_err(hcd->self.controller, "%s: Memory requested: %d, available %d\n",
+			__func__, total, ISP1362_BUF_SIZE);
+		return -ENOMEM;
+	}
+
+	total = istl_size + intl_size + atl_size;
+	spin_lock_irqsave(&isp1362_hcd->lock, flags);
+
+	for (i = 0; i < 2; i++) {
+		isp1362_hcd->istl_queue[i].buf_start = i * istl_size / 2,
+		isp1362_hcd->istl_queue[i].buf_size = istl_size / 2;
+		isp1362_hcd->istl_queue[i].blk_size = 4;
+		INIT_LIST_HEAD(&isp1362_hcd->istl_queue[i].active);
+		snprintf(isp1362_hcd->istl_queue[i].name,
+			 sizeof(isp1362_hcd->istl_queue[i].name), "ISTL%d", i);
+		DBG(3, "%s: %5s buf $%04x %d\n", __func__,
+		     isp1362_hcd->istl_queue[i].name,
+		     isp1362_hcd->istl_queue[i].buf_start,
+		     isp1362_hcd->istl_queue[i].buf_size);
+	}
+	isp1362_write_reg16(isp1362_hcd, HCISTLBUFSZ, istl_size / 2);
+
+	isp1362_hcd->intl_queue.buf_start = istl_size;
+	isp1362_hcd->intl_queue.buf_size = intl_size;
+	isp1362_hcd->intl_queue.buf_count = ISP1362_INTL_BUFFERS;
+	isp1362_hcd->intl_queue.blk_size = intl_blksize;
+	isp1362_hcd->intl_queue.buf_avail = isp1362_hcd->intl_queue.buf_count;
+	isp1362_hcd->intl_queue.skip_map = ~0;
+	INIT_LIST_HEAD(&isp1362_hcd->intl_queue.active);
+
+	isp1362_write_reg16(isp1362_hcd, HCINTLBUFSZ,
+			    isp1362_hcd->intl_queue.buf_size);
+	isp1362_write_reg16(isp1362_hcd, HCINTLBLKSZ,
+			    isp1362_hcd->intl_queue.blk_size - PTD_HEADER_SIZE);
+	isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, ~0);
+	isp1362_write_reg32(isp1362_hcd, HCINTLLAST,
+			    1 << (ISP1362_INTL_BUFFERS - 1));
+
+	isp1362_hcd->atl_queue.buf_start = istl_size + intl_size;
+	isp1362_hcd->atl_queue.buf_size = atl_size;
+	isp1362_hcd->atl_queue.buf_count = atl_buffers;
+	isp1362_hcd->atl_queue.blk_size = atl_blksize;
+	isp1362_hcd->atl_queue.buf_avail = isp1362_hcd->atl_queue.buf_count;
+	isp1362_hcd->atl_queue.skip_map = ~0;
+	INIT_LIST_HEAD(&isp1362_hcd->atl_queue.active);
+
+	isp1362_write_reg16(isp1362_hcd, HCATLBUFSZ,
+			    isp1362_hcd->atl_queue.buf_size);
+	isp1362_write_reg16(isp1362_hcd, HCATLBLKSZ,
+			    isp1362_hcd->atl_queue.blk_size - PTD_HEADER_SIZE);
+	isp1362_write_reg32(isp1362_hcd, HCATLSKIP, ~0);
+	isp1362_write_reg32(isp1362_hcd, HCATLLAST,
+			    1 << (atl_buffers - 1));
+
+	snprintf(isp1362_hcd->atl_queue.name,
+		 sizeof(isp1362_hcd->atl_queue.name), "ATL");
+	snprintf(isp1362_hcd->intl_queue.name,
+		 sizeof(isp1362_hcd->intl_queue.name), "INTL");
+	DBG(3, "%s: %5s buf $%04x %2d * %4d = %4d\n", __func__,
+	     isp1362_hcd->intl_queue.name,
+	     isp1362_hcd->intl_queue.buf_start,
+	     ISP1362_INTL_BUFFERS, isp1362_hcd->intl_queue.blk_size,
+	     isp1362_hcd->intl_queue.buf_size);
+	DBG(3, "%s: %5s buf $%04x %2d * %4d = %4d\n", __func__,
+	     isp1362_hcd->atl_queue.name,
+	     isp1362_hcd->atl_queue.buf_start,
+	     atl_buffers, isp1362_hcd->atl_queue.blk_size,
+	     isp1362_hcd->atl_queue.buf_size);
+
+	spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
+
+	return 0;
+}
+
+static int isp1362_hc_reset(struct usb_hcd *hcd)
+{
+	int ret = 0;
+	struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd);
+	unsigned long t;
+	unsigned long timeout = 100;
+	unsigned long flags;
+	int clkrdy = 0;
+
+	pr_info("%s:\n", __func__);
+
+	if (isp1362_hcd->board && isp1362_hcd->board->reset) {
+		isp1362_hcd->board->reset(hcd->self.controller, 1);
+		msleep(20);
+		if (isp1362_hcd->board->clock)
+			isp1362_hcd->board->clock(hcd->self.controller, 1);
+		isp1362_hcd->board->reset(hcd->self.controller, 0);
+	} else
+		isp1362_sw_reset(isp1362_hcd);
+
+	/* chip has been reset. First we need to see a clock */
+	t = jiffies + msecs_to_jiffies(timeout);
+	while (!clkrdy && time_before_eq(jiffies, t)) {
+		spin_lock_irqsave(&isp1362_hcd->lock, flags);
+		clkrdy = isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_CLKRDY;
+		spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
+		if (!clkrdy)
+			msleep(4);
+	}
+
+	spin_lock_irqsave(&isp1362_hcd->lock, flags);
+	isp1362_write_reg16(isp1362_hcd, HCuPINT, HCuPINT_CLKRDY);
+	spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
+	if (!clkrdy) {
+		pr_err("Clock not ready after %lums\n", timeout);
+		ret = -ENODEV;
+	}
+	return ret;
+}
+
+static void isp1362_hc_stop(struct usb_hcd *hcd)
+{
+	struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd);
+	unsigned long flags;
+	u32 tmp;
+
+	pr_info("%s:\n", __func__);
+
+	del_timer_sync(&hcd->rh_timer);
+
+	spin_lock_irqsave(&isp1362_hcd->lock, flags);
+
+	isp1362_write_reg16(isp1362_hcd, HCuPINTENB, 0);
+
+	/* Switch off power for all ports */
+	tmp = isp1362_read_reg32(isp1362_hcd, HCRHDESCA);
+	tmp &= ~(RH_A_NPS | RH_A_PSM);
+	isp1362_write_reg32(isp1362_hcd, HCRHDESCA, tmp);
+	isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_LPS);
+
+	/* Reset the chip */
+	if (isp1362_hcd->board && isp1362_hcd->board->reset)
+		isp1362_hcd->board->reset(hcd->self.controller, 1);
+	else
+		isp1362_sw_reset(isp1362_hcd);
+
+	if (isp1362_hcd->board && isp1362_hcd->board->clock)
+		isp1362_hcd->board->clock(hcd->self.controller, 0);
+
+	spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
+}
+
+#ifdef CHIP_BUFFER_TEST
+static int isp1362_chip_test(struct isp1362_hcd *isp1362_hcd)
+{
+	int ret = 0;
+	u16 *ref;
+	unsigned long flags;
+
+	ref = kmalloc(2 * ISP1362_BUF_SIZE, GFP_KERNEL);
+	if (ref) {
+		int offset;
+		u16 *tst = &ref[ISP1362_BUF_SIZE / 2];
+
+		for (offset = 0; offset < ISP1362_BUF_SIZE / 2; offset++) {
+			ref[offset] = ~offset;
+			tst[offset] = offset;
+		}
+
+		for (offset = 0; offset < 4; offset++) {
+			int j;
+
+			for (j = 0; j < 8; j++) {
+				spin_lock_irqsave(&isp1362_hcd->lock, flags);
+				isp1362_write_buffer(isp1362_hcd, (u8 *)ref + offset, 0, j);
+				isp1362_read_buffer(isp1362_hcd, (u8 *)tst + offset, 0, j);
+				spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
+
+				if (memcmp(ref, tst, j)) {
+					ret = -ENODEV;
+					pr_err("%s: memory check with %d byte offset %d failed\n",
+					    __func__, j, offset);
+					dump_data((u8 *)ref + offset, j);
+					dump_data((u8 *)tst + offset, j);
+				}
+			}
+		}
+
+		spin_lock_irqsave(&isp1362_hcd->lock, flags);
+		isp1362_write_buffer(isp1362_hcd, ref, 0, ISP1362_BUF_SIZE);
+		isp1362_read_buffer(isp1362_hcd, tst, 0, ISP1362_BUF_SIZE);
+		spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
+
+		if (memcmp(ref, tst, ISP1362_BUF_SIZE)) {
+			ret = -ENODEV;
+			pr_err("%s: memory check failed\n", __func__);
+			dump_data((u8 *)tst, ISP1362_BUF_SIZE / 2);
+		}
+
+		for (offset = 0; offset < 256; offset++) {
+			int test_size = 0;
+
+			yield();
+
+			memset(tst, 0, ISP1362_BUF_SIZE);
+			spin_lock_irqsave(&isp1362_hcd->lock, flags);
+			isp1362_write_buffer(isp1362_hcd, tst, 0, ISP1362_BUF_SIZE);
+			isp1362_read_buffer(isp1362_hcd, tst, 0, ISP1362_BUF_SIZE);
+			spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
+			if (memcmp(tst, tst + (ISP1362_BUF_SIZE / (2 * sizeof(*tst))),
+				   ISP1362_BUF_SIZE / 2)) {
+				pr_err("%s: Failed to clear buffer\n", __func__);
+				dump_data((u8 *)tst, ISP1362_BUF_SIZE);
+				break;
+			}
+			spin_lock_irqsave(&isp1362_hcd->lock, flags);
+			isp1362_write_buffer(isp1362_hcd, ref, offset * 2, PTD_HEADER_SIZE);
+			isp1362_write_buffer(isp1362_hcd, ref + PTD_HEADER_SIZE / sizeof(*ref),
+					     offset * 2 + PTD_HEADER_SIZE, test_size);
+			isp1362_read_buffer(isp1362_hcd, tst, offset * 2,
+					    PTD_HEADER_SIZE + test_size);
+			spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
+			if (memcmp(ref, tst, PTD_HEADER_SIZE + test_size)) {
+				dump_data(((u8 *)ref) + offset, PTD_HEADER_SIZE + test_size);
+				dump_data((u8 *)tst, PTD_HEADER_SIZE + test_size);
+				spin_lock_irqsave(&isp1362_hcd->lock, flags);
+				isp1362_read_buffer(isp1362_hcd, tst, offset * 2,
+						    PTD_HEADER_SIZE + test_size);
+				spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
+				if (memcmp(ref, tst, PTD_HEADER_SIZE + test_size)) {
+					ret = -ENODEV;
+					pr_err("%s: memory check with offset %02x failed\n",
+					    __func__, offset);
+					break;
+				}
+				pr_warning("%s: memory check with offset %02x ok after second read\n",
+				     __func__, offset);
+			}
+		}
+		kfree(ref);
+	}
+	return ret;
+}
+#endif
+
+static int isp1362_hc_start(struct usb_hcd *hcd)
+{
+	int ret;
+	struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd);
+	struct isp1362_platform_data *board = isp1362_hcd->board;
+	u16 hwcfg;
+	u16 chipid;
+	unsigned long flags;
+
+	pr_info("%s:\n", __func__);
+
+	spin_lock_irqsave(&isp1362_hcd->lock, flags);
+	chipid = isp1362_read_reg16(isp1362_hcd, HCCHIPID);
+	spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
+
+	if ((chipid & HCCHIPID_MASK) != HCCHIPID_MAGIC) {
+		pr_err("%s: Invalid chip ID %04x\n", __func__, chipid);
+		return -ENODEV;
+	}
+
+#ifdef CHIP_BUFFER_TEST
+	ret = isp1362_chip_test(isp1362_hcd);
+	if (ret)
+		return -ENODEV;
+#endif
+	spin_lock_irqsave(&isp1362_hcd->lock, flags);
+	/* clear interrupt status and disable all interrupt sources */
+	isp1362_write_reg16(isp1362_hcd, HCuPINT, 0xff);
+	isp1362_write_reg16(isp1362_hcd, HCuPINTENB, 0);
+
+	/* HW conf */
+	hwcfg = HCHWCFG_INT_ENABLE | HCHWCFG_DBWIDTH(1);
+	if (board->sel15Kres)
+		hwcfg |= HCHWCFG_PULLDOWN_DS2 |
+			(MAX_ROOT_PORTS > 1) ? HCHWCFG_PULLDOWN_DS1 : 0;
+	if (board->clknotstop)
+		hwcfg |= HCHWCFG_CLKNOTSTOP;
+	if (board->oc_enable)
+		hwcfg |= HCHWCFG_ANALOG_OC;
+	if (board->int_act_high)
+		hwcfg |= HCHWCFG_INT_POL;
+	if (board->int_edge_triggered)
+		hwcfg |= HCHWCFG_INT_TRIGGER;
+	if (board->dreq_act_high)
+		hwcfg |= HCHWCFG_DREQ_POL;
+	if (board->dack_act_high)
+		hwcfg |= HCHWCFG_DACK_POL;
+	isp1362_write_reg16(isp1362_hcd, HCHWCFG, hwcfg);
+	isp1362_show_reg(isp1362_hcd, HCHWCFG);
+	isp1362_write_reg16(isp1362_hcd, HCDMACFG, 0);
+	spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
+
+	ret = isp1362_mem_config(hcd);
+	if (ret)
+		return ret;
+
+	spin_lock_irqsave(&isp1362_hcd->lock, flags);
+
+	/* Root hub conf */
+	isp1362_hcd->rhdesca = 0;
+	if (board->no_power_switching)
+		isp1362_hcd->rhdesca |= RH_A_NPS;
+	if (board->power_switching_mode)
+		isp1362_hcd->rhdesca |= RH_A_PSM;
+	if (board->potpg)
+		isp1362_hcd->rhdesca |= (board->potpg << 24) & RH_A_POTPGT;
+	else
+		isp1362_hcd->rhdesca |= (25 << 24) & RH_A_POTPGT;
+
+	isp1362_write_reg32(isp1362_hcd, HCRHDESCA, isp1362_hcd->rhdesca & ~RH_A_OCPM);
+	isp1362_write_reg32(isp1362_hcd, HCRHDESCA, isp1362_hcd->rhdesca | RH_A_OCPM);
+	isp1362_hcd->rhdesca = isp1362_read_reg32(isp1362_hcd, HCRHDESCA);
+
+	isp1362_hcd->rhdescb = RH_B_PPCM;
+	isp1362_write_reg32(isp1362_hcd, HCRHDESCB, isp1362_hcd->rhdescb);
+	isp1362_hcd->rhdescb = isp1362_read_reg32(isp1362_hcd, HCRHDESCB);
+
+	isp1362_read_reg32(isp1362_hcd, HCFMINTVL);
+	isp1362_write_reg32(isp1362_hcd, HCFMINTVL, (FSMP(FI) << 16) | FI);
+	isp1362_write_reg32(isp1362_hcd, HCLSTHRESH, LSTHRESH);
+
+	spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
+
+	isp1362_hcd->hc_control = OHCI_USB_OPER;
+	hcd->state = HC_STATE_RUNNING;
+
+	spin_lock_irqsave(&isp1362_hcd->lock, flags);
+	/* Set up interrupts */
+	isp1362_hcd->intenb = OHCI_INTR_MIE | OHCI_INTR_RHSC | OHCI_INTR_UE;
+	isp1362_hcd->intenb |= OHCI_INTR_RD;
+	isp1362_hcd->irqenb = HCuPINT_OPR | HCuPINT_SUSP;
+	isp1362_write_reg32(isp1362_hcd, HCINTENB, isp1362_hcd->intenb);
+	isp1362_write_reg16(isp1362_hcd, HCuPINTENB, isp1362_hcd->irqenb);
+
+	/* Go operational */
+	isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control);
+	/* enable global power */
+	isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_LPSC | RH_HS_DRWE);
+
+	spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
+
+	return 0;
+}
+
+/*-------------------------------------------------------------------------*/
+
+static struct hc_driver isp1362_hc_driver = {
+	.description =		hcd_name,
+	.product_desc =		"ISP1362 Host Controller",
+	.hcd_priv_size =	sizeof(struct isp1362_hcd),
+
+	.irq =			isp1362_irq,
+	.flags =		HCD_USB11 | HCD_MEMORY,
+
+	.reset =		isp1362_hc_reset,
+	.start =		isp1362_hc_start,
+	.stop =			isp1362_hc_stop,
+
+	.urb_enqueue =		isp1362_urb_enqueue,
+	.urb_dequeue =		isp1362_urb_dequeue,
+	.endpoint_disable =	isp1362_endpoint_disable,
+
+	.get_frame_number =	isp1362_get_frame,
+
+	.hub_status_data =	isp1362_hub_status_data,
+	.hub_control =		isp1362_hub_control,
+	.bus_suspend =		isp1362_bus_suspend,
+	.bus_resume =		isp1362_bus_resume,
+};
+
+/*-------------------------------------------------------------------------*/
+
+#define resource_len(r) (((r)->end - (r)->start) + 1)
+
+static int __devexit isp1362_remove(struct platform_device *pdev)
+{
+	struct usb_hcd *hcd = platform_get_drvdata(pdev);
+	struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd);
+	struct resource *res;
+
+	remove_debug_file(isp1362_hcd);
+	DBG(0, "%s: Removing HCD\n", __func__);
+	usb_remove_hcd(hcd);
+
+	DBG(0, "%s: Unmapping data_reg @ %08x\n", __func__,
+	    (u32)isp1362_hcd->data_reg);
+	iounmap(isp1362_hcd->data_reg);
+
+	DBG(0, "%s: Unmapping addr_reg @ %08x\n", __func__,
+	    (u32)isp1362_hcd->addr_reg);
+	iounmap(isp1362_hcd->addr_reg);
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+	DBG(0, "%s: release mem_region: %08lx\n", __func__, (long unsigned int)res->start);
+	if (res)
+		release_mem_region(res->start, resource_len(res));
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	DBG(0, "%s: release mem_region: %08lx\n", __func__, (long unsigned int)res->start);
+	if (res)
+		release_mem_region(res->start, resource_len(res));
+
+	DBG(0, "%s: put_hcd\n", __func__);
+	usb_put_hcd(hcd);
+	DBG(0, "%s: Done\n", __func__);
+
+	return 0;
+}
+
+static int __init isp1362_probe(struct platform_device *pdev)
+{
+	struct usb_hcd *hcd;
+	struct isp1362_hcd *isp1362_hcd;
+	struct resource *addr, *data;
+	void __iomem *addr_reg;
+	void __iomem *data_reg;
+	int irq;
+	int retval = 0;
+
+	/* basic sanity checks first.  board-specific init logic should
+	 * have initialized this the three resources and probably board
+	 * specific platform_data.  we don't probe for IRQs, and do only
+	 * minimal sanity checking.
+	 */
+	if (pdev->num_resources < 3) {
+		retval = -ENODEV;
+		goto err1;
+	}
+
+	data = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	addr = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+	irq = platform_get_irq(pdev, 0);
+	if (!addr || !data || irq < 0) {
+		retval = -ENODEV;
+		goto err1;
+	}
+
+#ifdef CONFIG_USB_HCD_DMA
+	if (pdev->dev.dma_mask) {
+		struct resource *dma_res = platform_get_resource(pdev, IORESOURCE_MEM, 2);
+
+		if (!dma_res) {
+			retval = -ENODEV;
+			goto err1;
+		}
+		isp1362_hcd->data_dma = dma_res->start;
+		isp1362_hcd->max_dma_size = resource_len(dma_res);
+	}
+#else
+	if (pdev->dev.dma_mask) {
+		DBG(1, "won't do DMA");
+		retval = -ENODEV;
+		goto err1;
+	}
+#endif
+
+	if (!request_mem_region(addr->start, resource_len(addr), hcd_name)) {
+		retval = -EBUSY;
+		goto err1;
+	}
+	addr_reg = ioremap(addr->start, resource_len(addr));
+	if (addr_reg == NULL) {
+		retval = -ENOMEM;
+		goto err2;
+	}
+
+	if (!request_mem_region(data->start, resource_len(data), hcd_name)) {
+		retval = -EBUSY;
+		goto err3;
+	}
+	data_reg = ioremap(data->start, resource_len(data));
+	if (data_reg == NULL) {
+		retval = -ENOMEM;
+		goto err4;
+	}
+
+	/* allocate and initialize hcd */
+	hcd = usb_create_hcd(&isp1362_hc_driver, &pdev->dev, dev_name(&pdev->dev));
+	if (!hcd) {
+		retval = -ENOMEM;
+		goto err5;
+	}
+	hcd->rsrc_start = data->start;
+	isp1362_hcd = hcd_to_isp1362_hcd(hcd);
+	isp1362_hcd->data_reg = data_reg;
+	isp1362_hcd->addr_reg = addr_reg;
+
+	isp1362_hcd->next_statechange = jiffies;
+	spin_lock_init(&isp1362_hcd->lock);
+	INIT_LIST_HEAD(&isp1362_hcd->async);
+	INIT_LIST_HEAD(&isp1362_hcd->periodic);
+	INIT_LIST_HEAD(&isp1362_hcd->isoc);
+	INIT_LIST_HEAD(&isp1362_hcd->remove_list);
+	isp1362_hcd->board = pdev->dev.platform_data;
+#if USE_PLATFORM_DELAY
+	if (!isp1362_hcd->board->delay) {
+		dev_err(hcd->self.controller, "No platform delay function given\n");
+		retval = -ENODEV;
+		goto err6;
+	}
+#endif
+
+#ifdef CONFIG_ARM
+	if (isp1362_hcd->board)
+		set_irq_type(irq, isp1362_hcd->board->int_act_high ? IRQT_RISING : IRQT_FALLING);
+#endif
+
+	retval = usb_add_hcd(hcd, irq, IRQF_TRIGGER_LOW | IRQF_DISABLED | IRQF_SHARED);
+	if (retval != 0)
+		goto err6;
+	pr_info("%s, irq %d\n", hcd->product_desc, irq);
+
+	create_debug_file(isp1362_hcd);
+
+	return 0;
+
+ err6:
+	DBG(0, "%s: Freeing dev %08x\n", __func__, (u32)isp1362_hcd);
+	usb_put_hcd(hcd);
+ err5:
+	DBG(0, "%s: Unmapping data_reg @ %08x\n", __func__, (u32)data_reg);
+	iounmap(data_reg);
+ err4:
+	DBG(0, "%s: Releasing mem region %08lx\n", __func__, (long unsigned int)data->start);
+	release_mem_region(data->start, resource_len(data));
+ err3:
+	DBG(0, "%s: Unmapping addr_reg @ %08x\n", __func__, (u32)addr_reg);
+	iounmap(addr_reg);
+ err2:
+	DBG(0, "%s: Releasing mem region %08lx\n", __func__, (long unsigned int)addr->start);
+	release_mem_region(addr->start, resource_len(addr));
+ err1:
+	pr_err("%s: init error, %d\n", __func__, retval);
+
+	return retval;
+}
+
+#ifdef	CONFIG_PM
+static int isp1362_suspend(struct platform_device *pdev, pm_message_t state)
+{
+	struct usb_hcd *hcd = platform_get_drvdata(pdev);
+	struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd);
+	unsigned long flags;
+	int retval = 0;
+
+	DBG(0, "%s: Suspending device\n", __func__);
+
+	if (state.event == PM_EVENT_FREEZE) {
+		DBG(0, "%s: Suspending root hub\n", __func__);
+		retval = isp1362_bus_suspend(hcd);
+	} else {
+		DBG(0, "%s: Suspending RH ports\n", __func__);
+		spin_lock_irqsave(&isp1362_hcd->lock, flags);
+		isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_LPS);
+		spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
+	}
+	if (retval == 0)
+		pdev->dev.power.power_state = state;
+	return retval;
+}
+
+static int isp1362_resume(struct platform_device *pdev)
+{
+	struct usb_hcd *hcd = platform_get_drvdata(pdev);
+	struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd);
+	unsigned long flags;
+
+	DBG(0, "%s: Resuming\n", __func__);
+
+	if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) {
+		DBG(0, "%s: Resume RH ports\n", __func__);
+		spin_lock_irqsave(&isp1362_hcd->lock, flags);
+		isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_LPSC);
+		spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
+		return 0;
+	}
+
+	pdev->dev.power.power_state = PMSG_ON;
+
+	return isp1362_bus_resume(isp1362_hcd_to_hcd(isp1362_hcd));
+}
+#else
+#define	isp1362_suspend	NULL
+#define	isp1362_resume	NULL
+#endif
+
+static struct platform_driver isp1362_driver = {
+	.probe = isp1362_probe,
+	.remove = __devexit_p(isp1362_remove),
+
+	.suspend = isp1362_suspend,
+	.resume = isp1362_resume,
+	.driver = {
+		.name = (char *)hcd_name,
+		.owner = THIS_MODULE,
+	},
+};
+
+/*-------------------------------------------------------------------------*/
+
+static int __init isp1362_init(void)
+{
+	if (usb_disabled())
+		return -ENODEV;
+	pr_info("driver %s, %s\n", hcd_name, DRIVER_VERSION);
+	return platform_driver_register(&isp1362_driver);
+}
+module_init(isp1362_init);
+
+static void __exit isp1362_cleanup(void)
+{
+	platform_driver_unregister(&isp1362_driver);
+}
+module_exit(isp1362_cleanup);