Support for the Philips ISP116x HCD (Host Controller Driver)

Signed-off-by: Rodolfo Giometti <giometti@enneenne.com>

4 files changed, 1906 insertions, 2 deletions

diff --git a/drivers/Makefile b/drivers/Makefile
index 0ca400c..52cd388 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -31,7 +31,7 @@ COBJS	= 3c589.o 5701rls.o ali512x.o atmel_usart.o \
 	  bcm570x.o bcm570x_autoneg.o cfb_console.o cfi_flash.o \
 	  cs8900.o ct69000.o dataflash.o dc2114x.o dm9000x.o \
 	  e1000.o eepro100.o \
-	  i8042.o inca-ip_sw.o keyboard.o \
+	  i8042.o inca-ip_sw.o isp116x-hcd.o keyboard.o \
 	  lan91c96.o \
 	  natsemi.o ne2000.o netarm_eth.o netconsole.o \
 	  ns16550.o ns8382x.o ns87308.o ns7520_eth.o omap1510_i2c.o \
diff --git a/drivers/isp116x-hcd.c b/drivers/isp116x-hcd.c
new file mode 100644
index 0000000..d57b8ec
--- /dev/null
+++ b/drivers/isp116x-hcd.c
@@ -0,0 +1,1412 @@
+/*
+ * ISP116x HCD (Host Controller Driver) for u-boot.
+ *
+ * Copyright (C) 2006-2007 Rodolfo Giometti <giometti@linux.it>
+ * Copyright (C) 2006-2007 Eurotech S.p.A. <info@eurotech.it>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ *
+ * Derived in part from the SL811 HCD driver "u-boot/drivers/sl811_usb.c"
+ * (original copyright message follows):
+ *
+ *    (C) Copyright 2004
+ *    Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ *    This code is based on linux driver for sl811hs chip, source at
+ *    drivers/usb/host/sl811.c:
+ *
+ *    SL811 Host Controller Interface driver for USB.
+ *
+ *    Copyright (c) 2003/06, Courage Co., Ltd.
+ *
+ *    Based on:
+ *         1.uhci.c by Linus Torvalds, Johannes Erdfelt, Randy Dunlap,
+ *           Georg Acher, Deti Fliegl, Thomas Sailer, Roman Weissgaerber,
+ *           Adam Richter, Gregory P. Smith;
+ *         2.Original SL811 driver (hc_sl811.o) by Pei Liu <pbl@cypress.com>
+ *         3.Rewrited as sl811.o by Yin Aihua <yinah:couragetech.com.cn>
+ *
+ *    [[GNU/GPL disclaimer]]
+ *
+ * and in part from AU1x00 OHCI HCD driver "u-boot/cpu/mips/au1x00_usb_ohci.c"
+ * (original copyright message follows):
+ *
+ *    URB OHCI HCD (Host Controller Driver) for USB on the AU1x00.
+ *
+ *    (C) Copyright 2003
+ *    Gary Jennejohn, DENX Software Engineering <gj@denx.de>
+ *
+ *    [[GNU/GPL disclaimer]]
+ *
+ *    Note: Part of this code has been derived from linux
+ */
+
+#include <common.h>
+
+#ifdef CONFIG_USB_ISP116X_HCD
+#include <asm/io.h>
+#include <usb.h>
+#include <malloc.h>
+#include <linux/list.h>
+
+/*
+ * ISP116x chips require certain delays between accesses to its
+ * registers. The following timing options exist.
+ *
+ * 1. Configure your memory controller (the best)
+ * 2. Use ndelay (easiest, poorest). For that, enable the following macro.
+ *
+ * Value is in microseconds.
+ */
+#ifdef ISP116X_HCD_USE_UDELAY
+#define UDELAY		1
+#endif
+
+/*
+ * On some (slowly?) machines an extra delay after data packing into
+ * controller's FIFOs is required, * otherwise you may get the following
+ * error:
+ *
+ *   uboot> usb start
+ *   (Re)start USB...
+ *   USB:   scanning bus for devices... isp116x: isp116x_submit_job: CTL:TIMEOUT
+ *   isp116x: isp116x_submit_job: ****** FIFO not ready! ******
+ *
+ *         USB device not responding, giving up (status=4)
+ *         isp116x: isp116x_submit_job: ****** FIFO not empty! ******
+ *         isp116x: isp116x_submit_job: ****** FIFO not empty! ******
+ *         isp116x: isp116x_submit_job: ****** FIFO not empty! ******
+ *         3 USB Device(s) found
+ *                scanning bus for storage devices... 0 Storage Device(s) found
+ *
+ * Value is in milliseconds.
+ */
+#ifdef ISP116X_HCD_USE_EXTRA_DELAY
+#define EXTRA_DELAY	2
+#endif
+
+/*
+ * Enable the following defines if you wish enable debugging messages.
+ */
+#undef DEBUG			/* enable debugging messages */
+#undef TRACE			/* enable tracing code */
+#undef VERBOSE			/* verbose debugging messages */
+
+#include "isp116x.h"
+
+#define DRIVER_VERSION	"08 Jan 2007"
+static const char hcd_name[] = "isp116x-hcd";
+
+struct isp116x isp116x_dev;
+struct isp116x_platform_data isp116x_board;
+int got_rhsc = 0;		/* root hub status change */
+struct usb_device *devgone;	/* device which was disconnected */
+int rh_devnum = 0;		/* address of Root Hub endpoint */
+
+/* ------------------------------------------------------------------------- */
+
+#define ALIGN(x,a)	(((x)+(a)-1UL)&~((a)-1UL))
+#define min_t(type,x,y)	\
+	({ type __x = (x); type __y = (y); __x < __y ? __x : __y; })
+
+/* ------------------------------------------------------------------------- */
+
+static int isp116x_reset(struct isp116x *isp116x);
+
+/* --- Debugging functions ------------------------------------------------- */
+
+#define isp116x_show_reg(d, r) {				\
+	if ((r) < 0x20) {					\
+		DBG("%-12s[%02x]: %08x", #r,			\
+			r, isp116x_read_reg32(d, r));		\
+	} else {						\
+		DBG("%-12s[%02x]:     %04x", #r,		\
+			r, isp116x_read_reg16(d, r));  		\
+	}							\
+}
+
+#define isp116x_show_regs(d) {					\
+	isp116x_show_reg(d, HCREVISION);			\
+	isp116x_show_reg(d, HCCONTROL);				\
+	isp116x_show_reg(d, HCCMDSTAT);				\
+	isp116x_show_reg(d, HCINTSTAT);				\
+	isp116x_show_reg(d, HCINTENB);				\
+	isp116x_show_reg(d, HCFMINTVL);				\
+	isp116x_show_reg(d, HCFMREM);				\
+	isp116x_show_reg(d, HCFMNUM);				\
+	isp116x_show_reg(d, HCLSTHRESH);			\
+	isp116x_show_reg(d, HCRHDESCA);				\
+	isp116x_show_reg(d, HCRHDESCB);				\
+	isp116x_show_reg(d, HCRHSTATUS);			\
+	isp116x_show_reg(d, HCRHPORT1);				\
+	isp116x_show_reg(d, HCRHPORT2);				\
+	isp116x_show_reg(d, HCHWCFG);				\
+	isp116x_show_reg(d, HCDMACFG);				\
+	isp116x_show_reg(d, HCXFERCTR);				\
+	isp116x_show_reg(d, HCuPINT);				\
+	isp116x_show_reg(d, HCuPINTENB);			\
+	isp116x_show_reg(d, HCCHIPID);				\
+	isp116x_show_reg(d, HCSCRATCH);				\
+	isp116x_show_reg(d, HCITLBUFLEN);			\
+	isp116x_show_reg(d, HCATLBUFLEN);			\
+	isp116x_show_reg(d, HCBUFSTAT);				\
+	isp116x_show_reg(d, HCRDITL0LEN);			\
+	isp116x_show_reg(d, HCRDITL1LEN);			\
+}
+
+#if defined(TRACE)
+
+static int isp116x_get_current_frame_number(struct usb_device *usb_dev)
+{
+	struct isp116x *isp116x = &isp116x_dev;
+
+	return isp116x_read_reg32(isp116x, HCFMNUM);
+}
+
+static void dump_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
+		     int len, char *str)
+{
+#if defined(VERBOSE)
+	int i;
+#endif
+
+	DBG("%s URB:[%4x] dev:%2d,ep:%2d-%c,type:%s,len:%d stat:%#lx",
+	    str,
+	    isp116x_get_current_frame_number(dev),
+	    usb_pipedevice(pipe),
+	    usb_pipeendpoint(pipe),
+	    usb_pipeout(pipe) ? 'O' : 'I',
+	    usb_pipetype(pipe) < 2 ?
+	    (usb_pipeint(pipe) ?
+	     "INTR" : "ISOC") :
+	    (usb_pipecontrol(pipe) ? "CTRL" : "BULK"), len, dev->status);
+#if defined(VERBOSE)
+	if (len > 0 && buffer) {
+		printf(__FILE__ ": data(%d):", len);
+		for (i = 0; i < 16 && i < len; i++)
+			printf(" %02x", ((__u8 *) buffer)[i]);
+		printf("%s\n", i < len ? "..." : "");
+	}
+#endif
+}
+
+#define PTD_DIR_STR(ptd)  ({char __c;		\
+	switch(PTD_GET_DIR(ptd)){		\
+	case 0:  __c = 's'; break;		\
+	case 1:  __c = 'o'; break;		\
+	default: __c = 'i'; break;		\
+	}; __c;})
+
+/*
+  Dump PTD info. The code documents the format
+  perfectly, right :)
+*/
+static inline void dump_ptd(struct ptd *ptd)
+{
+#if defined(VERBOSE)
+	int k;
+#endif
+
+	DBG("PTD(ext) : cc:%x %d%c%d %d,%d,%d t:%x %x%x%x",
+	    PTD_GET_CC(ptd),
+	    PTD_GET_FA(ptd), PTD_DIR_STR(ptd), PTD_GET_EP(ptd),
+	    PTD_GET_COUNT(ptd), PTD_GET_LEN(ptd), PTD_GET_MPS(ptd),
+	    PTD_GET_TOGGLE(ptd),
+	    PTD_GET_ACTIVE(ptd), PTD_GET_SPD(ptd), PTD_GET_LAST(ptd));
+#if defined(VERBOSE)
+	printf("isp116x: %s: PTD(byte): ", __FUNCTION__);
+	for (k = 0; k < sizeof(struct ptd); ++k)
+		printf("%02x ", ((u8 *) ptd)[k]);
+	printf("\n");
+#endif
+}
+
+static inline void dump_ptd_data(struct ptd *ptd, u8 * buf, int type)
+{
+#if defined(VERBOSE)
+	int k;
+
+	if (type == 0 /* 0ut data */ ) {
+		printf("isp116x: %s: out data: ", __FUNCTION__);
+		for (k = 0; k < PTD_GET_LEN(ptd); ++k)
+			printf("%02x ", ((u8 *) buf)[k]);
+		printf("\n");
+	}
+	if (type == 1 /* 1n data */ ) {
+		printf("isp116x: %s: in data: ", __FUNCTION__);
+		for (k = 0; k < PTD_GET_COUNT(ptd); ++k)
+			printf("%02x ", ((u8 *) buf)[k]);
+		printf("\n");
+	}
+
+	if (PTD_GET_LAST(ptd))
+		DBG("--- last PTD ---");
+#endif
+}
+
+#else
+
+#define dump_msg(dev, pipe, buffer, len, str)			do { } while (0)
+#define dump_pkt(dev, pipe, buffer, len, setup, str, small)	do {} while (0)
+
+#define dump_ptd(ptd)			do {} while (0)
+#define dump_ptd_data(ptd, buf, type)	do {} while (0)
+
+#endif
+
+/* --- Virtual Root Hub ---------------------------------------------------- */
+
+/* Device descriptor */
+static __u8 root_hub_dev_des[] = {
+	0x12,			/*  __u8  bLength; */
+	0x01,			/*  __u8  bDescriptorType; Device */
+	0x10,			/*  __u16 bcdUSB; v1.1 */
+	0x01,
+	0x09,			/*  __u8  bDeviceClass; HUB_CLASSCODE */
+	0x00,			/*  __u8  bDeviceSubClass; */
+	0x00,			/*  __u8  bDeviceProtocol; */
+	0x08,			/*  __u8  bMaxPacketSize0; 8 Bytes */
+	0x00,			/*  __u16 idVendor; */
+	0x00,
+	0x00,			/*  __u16 idProduct; */
+	0x00,
+	0x00,			/*  __u16 bcdDevice; */
+	0x00,
+	0x00,			/*  __u8  iManufacturer; */
+	0x01,			/*  __u8  iProduct; */
+	0x00,			/*  __u8  iSerialNumber; */
+	0x01			/*  __u8  bNumConfigurations; */
+};
+
+/* Configuration descriptor */
+static __u8 root_hub_config_des[] = {
+	0x09,			/*  __u8  bLength; */
+	0x02,			/*  __u8  bDescriptorType; Configuration */
+	0x19,			/*  __u16 wTotalLength; */
+	0x00,
+	0x01,			/*  __u8  bNumInterfaces; */
+	0x01,			/*  __u8  bConfigurationValue; */
+	0x00,			/*  __u8  iConfiguration; */
+	0x40,			/*  __u8  bmAttributes;
+				   Bit 7: Bus-powered, 6: Self-powered, 5 Remote-wakwup, 4..0: resvd */
+	0x00,			/*  __u8  MaxPower; */
+
+	/* interface */
+	0x09,			/*  __u8  if_bLength; */
+	0x04,			/*  __u8  if_bDescriptorType; Interface */
+	0x00,			/*  __u8  if_bInterfaceNumber; */
+	0x00,			/*  __u8  if_bAlternateSetting; */
+	0x01,			/*  __u8  if_bNumEndpoints; */
+	0x09,			/*  __u8  if_bInterfaceClass; HUB_CLASSCODE */
+	0x00,			/*  __u8  if_bInterfaceSubClass; */
+	0x00,			/*  __u8  if_bInterfaceProtocol; */
+	0x00,			/*  __u8  if_iInterface; */
+
+	/* endpoint */
+	0x07,			/*  __u8  ep_bLength; */
+	0x05,			/*  __u8  ep_bDescriptorType; Endpoint */
+	0x81,			/*  __u8  ep_bEndpointAddress; IN Endpoint 1 */
+	0x03,			/*  __u8  ep_bmAttributes; Interrupt */
+	0x00,			/*  __u16 ep_wMaxPacketSize; ((MAX_ROOT_PORTS + 1) / 8 */
+	0x02,
+	0xff			/*  __u8  ep_bInterval; 255 ms */
+};
+
+static unsigned char root_hub_str_index0[] = {
+	0x04,			/*  __u8  bLength; */
+	0x03,			/*  __u8  bDescriptorType; String-descriptor */
+	0x09,			/*  __u8  lang ID */
+	0x04,			/*  __u8  lang ID */
+};
+
+static unsigned char root_hub_str_index1[] = {
+	0x22,			/*  __u8  bLength; */
+	0x03,			/*  __u8  bDescriptorType; String-descriptor */
+	'I',			/*  __u8  Unicode */
+	0,			/*  __u8  Unicode */
+	'S',			/*  __u8  Unicode */
+	0,			/*  __u8  Unicode */
+	'P',			/*  __u8  Unicode */
+	0,			/*  __u8  Unicode */
+	'1',			/*  __u8  Unicode */
+	0,			/*  __u8  Unicode */
+	'1',			/*  __u8  Unicode */
+	0,			/*  __u8  Unicode */
+	'6',			/*  __u8  Unicode */
+	0,			/*  __u8  Unicode */
+	'x',			/*  __u8  Unicode */
+	0,			/*  __u8  Unicode */
+	' ',			/*  __u8  Unicode */
+	0,			/*  __u8  Unicode */
+	'R',			/*  __u8  Unicode */
+	0,			/*  __u8  Unicode */
+	'o',			/*  __u8  Unicode */
+	0,			/*  __u8  Unicode */
+	'o',			/*  __u8  Unicode */
+	0,			/*  __u8  Unicode */
+	't',			/*  __u8  Unicode */
+	0,			/*  __u8  Unicode */
+	' ',			/*  __u8  Unicode */
+	0,			/*  __u8  Unicode */
+	'H',			/*  __u8  Unicode */
+	0,			/*  __u8  Unicode */
+	'u',			/*  __u8  Unicode */
+	0,			/*  __u8  Unicode */
+	'b',			/*  __u8  Unicode */
+	0,			/*  __u8  Unicode */
+};
+
+/*
+ * Hub class-specific descriptor is constructed dynamically
+ */
+
+/* --- Virtual root hub management functions ------------------------------- */
+
+static int rh_check_port_status(struct isp116x *isp116x)
+{
+	u32 temp, ndp, i;
+	int res;
+
+	res = -1;
+	temp = isp116x_read_reg32(isp116x, HCRHSTATUS);
+	ndp = (temp & RH_A_NDP);
+	for (i = 0; i < ndp; i++) {
+		temp = isp116x_read_reg32(isp116x, HCRHPORT1 + i);
+		/* check for a device disconnect */
+		if (((temp & (RH_PS_PESC | RH_PS_CSC)) ==
+		     (RH_PS_PESC | RH_PS_CSC)) && ((temp & RH_PS_CCS) == 0)) {
+			res = i;
+			break;
+		}
+	}
+	return res;
+}
+
+/* --- HC management functions --------------------------------------------- */
+
+/* Write len bytes to fifo, pad till 32-bit boundary
+ */
+static void write_ptddata_to_fifo(struct isp116x *isp116x, void *buf, int len)
+{
+	u8 *dp = (u8 *) buf;
+	u16 *dp2 = (u16 *) buf;
+	u16 w;
+	int quot = len % 4;
+
+	if ((unsigned long)dp2 & 1) {
+		/* not aligned */
+		for (; len > 1; len -= 2) {
+			w = *dp++;
+			w |= *dp++ << 8;
+			isp116x_raw_write_data16(isp116x, w);
+		}
+		if (len)
+			isp116x_write_data16(isp116x, (u16) * dp);
+	} else {
+		/* aligned */
+		for (; len > 1; len -= 2)
+			isp116x_raw_write_data16(isp116x, *dp2++);
+		if (len)
+			isp116x_write_data16(isp116x, 0xff & *((u8 *) dp2));
+	}
+	if (quot == 1 || quot == 2)
+		isp116x_raw_write_data16(isp116x, 0);
+}
+
+/* Read len bytes from fifo and then read till 32-bit boundary
+ */
+static void read_ptddata_from_fifo(struct isp116x *isp116x, void *buf, int len)
+{
+	u8 *dp = (u8 *) buf;
+	u16 *dp2 = (u16 *) buf;
+	u16 w;
+	int quot = len % 4;
+
+	if ((unsigned long)dp2 & 1) {
+		/* not aligned */
+		for (; len > 1; len -= 2) {
+			w = isp116x_raw_read_data16(isp116x);
+			*dp++ = w & 0xff;
+			*dp++ = (w >> 8) & 0xff;
+		}
+		if (len)
+			*dp = 0xff & isp116x_read_data16(isp116x);
+	} else {
+		/* aligned */
+		for (; len > 1; len -= 2)
+			*dp2++ = isp116x_raw_read_data16(isp116x);
+		if (len)
+			*(u8 *) dp2 = 0xff & isp116x_read_data16(isp116x);
+	}
+	if (quot == 1 || quot == 2)
+		isp116x_raw_read_data16(isp116x);
+}
+
+/* Write PTD's and data for scheduled transfers into the fifo ram.
+ * Fifo must be empty and ready */
+static void pack_fifo(struct isp116x *isp116x, struct usb_device *dev,
+		      unsigned long pipe, struct ptd *ptd, int n, void *data,
+		      int len)
+{
+	int buflen = n * sizeof(struct ptd) + len;
+	int i, done;
+
+	DBG("--- pack buffer %p - %d bytes (fifo %d) ---", data, len, buflen);
+
+	isp116x_write_reg16(isp116x, HCuPINT, HCuPINT_AIIEOT);
+	isp116x_write_reg16(isp116x, HCXFERCTR, buflen);
+	isp116x_write_addr(isp116x, HCATLPORT | ISP116x_WRITE_OFFSET);
+
+	done = 0;
+	for (i = 0; i < n; i++) {
+		DBG("i=%d - done=%d - len=%d", i, done, PTD_GET_LEN(&ptd[i]));
+
+		dump_ptd(&ptd[i]);
+		isp116x_write_data16(isp116x, ptd[i].count);
+		isp116x_write_data16(isp116x, ptd[i].mps);
+		isp116x_write_data16(isp116x, ptd[i].len);
+		isp116x_write_data16(isp116x, ptd[i].faddr);
+
+		dump_ptd_data(&ptd[i], (__u8 *) data + done, 0);
+		write_ptddata_to_fifo(isp116x,
+				      (__u8 *) data + done,
+				      PTD_GET_LEN(&ptd[i]));
+
+		done += PTD_GET_LEN(&ptd[i]);
+	}
+}
+
+/* Read the processed PTD's and data from fifo ram back to URBs' buffers.
+ * Fifo must be full and done */
+static int unpack_fifo(struct isp116x *isp116x, struct usb_device *dev,
+		       unsigned long pipe, struct ptd *ptd, int n, void *data,
+		       int len)
+{
+	int buflen = n * sizeof(struct ptd) + len;
+	int i, done, cc, ret;
+
+	isp116x_write_reg16(isp116x, HCuPINT, HCuPINT_AIIEOT);
+	isp116x_write_reg16(isp116x, HCXFERCTR, buflen);
+	isp116x_write_addr(isp116x, HCATLPORT);
+
+	ret = TD_CC_NOERROR;
+	done = 0;
+	for (i = 0; i < n; i++) {
+		DBG("i=%d - done=%d - len=%d", i, done, PTD_GET_LEN(&ptd[i]));
+
+		ptd[i].count = isp116x_read_data16(isp116x);
+		ptd[i].mps = isp116x_read_data16(isp116x);
+		ptd[i].len = isp116x_read_data16(isp116x);
+		ptd[i].faddr = isp116x_read_data16(isp116x);
+		dump_ptd(&ptd[i]);
+
+		read_ptddata_from_fifo(isp116x,
+				       (__u8 *) data + done,
+				       PTD_GET_LEN(&ptd[i]));
+		dump_ptd_data(&ptd[i], (__u8 *) data + done, 1);
+
+		done += PTD_GET_LEN(&ptd[i]);
+
+		cc = PTD_GET_CC(&ptd[i]);
+		if (cc == TD_DATAUNDERRUN) {	/* underrun is no error... */
+			DBG("allowed data underrun");
+			cc = TD_CC_NOERROR;
+		}
+		if (cc != TD_CC_NOERROR && ret == TD_CC_NOERROR)
+			ret = cc;
+	}
+
+	DBG("--- unpack buffer %p - %d bytes (fifo %d) ---", data, len, buflen);
+
+	return ret;
+}
+
+/* Interrupt handling
+ */
+static int isp116x_interrupt(struct isp116x *isp116x)
+{
+	u16 irqstat;
+	u32 intstat;
+	int ret = 0;
+
+	isp116x_write_reg16(isp116x, HCuPINTENB, 0);
+	irqstat = isp116x_read_reg16(isp116x, HCuPINT);
+	isp116x_write_reg16(isp116x, HCuPINT, irqstat);
+	DBG(">>>>>> irqstat %x <<<<<<", irqstat);
+
+	if (irqstat & HCuPINT_ATL) {
+		DBG(">>>>>> HCuPINT_ATL <<<<<<");
+		ret = 1;
+	}
+
+	if (irqstat & HCuPINT_OPR) {
+		intstat = isp116x_read_reg32(isp116x, HCINTSTAT);
+		isp116x_write_reg32(isp116x, HCINTSTAT, intstat);
+		DBG(">>>>>> HCuPINT_OPR %x <<<<<<", intstat);
+
+		if (intstat & HCINT_UE) {
+			ERR("unrecoverable error, controller disabled");
+
+			/* FIXME: be optimistic, hope that bug won't repeat
+			 * often. Make some non-interrupt context restart the
+			 * controller. Count and limit the retries though;
+			 * either hardware or software errors can go forever...
+			 */
+			isp116x_reset(isp116x);
+			ret = -1;
+			return -1;
+		}
+
+		if (intstat & HCINT_RHSC) {
+			got_rhsc = 1;
+			ret = 1;
+			/* When root hub or any of its ports is going
+			   to come out of suspend, it may take more
+			   than 10ms for status bits to stabilize. */
+			wait_ms(20);
+		}
+
+		if (intstat & HCINT_SO) {
+			ERR("schedule overrun");
+			ret = -1;
+		}
+
+		irqstat &= ~HCuPINT_OPR;
+	}
+
+	return ret;
+}
+
+#define PTD_NUM			64	/* it should be enougth... */
+struct ptd ptd[PTD_NUM];
+static inline int max_transfer_len(struct usb_device *dev, unsigned long pipe)
+{
+	return min(PTD_NUM * usb_maxpacket(dev, pipe), PTD_NUM * 16);
+}
+
+/* Do an USB transfer
+ */
+static int isp116x_submit_job(struct usb_device *dev, unsigned long pipe,
+			      int dir, void *buffer, int len)
+{
+	struct isp116x *isp116x = &isp116x_dev;
+	int type = usb_pipetype(pipe);
+	int epnum = usb_pipeendpoint(pipe);
+	int max = usb_maxpacket(dev, pipe);
+	int dir_out = usb_pipeout(pipe);
+	int speed_low = usb_pipeslow(pipe);
+	int i, done, stat, timeout, cc;
+	int retries = 10;
+
+	DBG("------------------------------------------------");
+	dump_msg(dev, pipe, buffer, len, "SUBMIT");
+	DBG("------------------------------------------------");
+
+	if (isp116x->disabled) {
+		ERR("EPIPE");
+		dev->status = USB_ST_CRC_ERR;
+		return -1;
+	}
+
+	/* device pulled? Shortcut the action. */
+	if (devgone == dev) {
+		ERR("ENODEV");
+		dev->status = USB_ST_CRC_ERR;
+		return USB_ST_CRC_ERR;
+	}
+
+	if (!max) {
+		ERR("pipesize for pipe %lx is zero", pipe);
+		dev->status = USB_ST_CRC_ERR;
+		return -1;
+	}
+
+	if (type == PIPE_ISOCHRONOUS) {
+		ERR("isochronous transfers not supported");
+		dev->status = USB_ST_CRC_ERR;
+		return -1;
+	}
+
+	/* FIFO not empty? */
+	if (isp116x_read_reg16(isp116x, HCBUFSTAT) & HCBUFSTAT_ATL_FULL) {
+		ERR("****** FIFO not empty! ******");
+		dev->status = USB_ST_BUF_ERR;
+		return -1;
+	}
+
+      retry:
+	isp116x_write_reg32(isp116x, HCINTSTAT, 0xff);
+
+	/* Prepare the PTD data */
+	done = 0;
+	i = 0;
+	do {
+		ptd[i].count = PTD_CC_MSK | PTD_ACTIVE_MSK |
+		    PTD_TOGGLE(usb_gettoggle(dev, epnum, dir_out));
+		ptd[i].mps = PTD_MPS(max) | PTD_SPD(speed_low) | PTD_EP(epnum);
+		ptd[i].len = PTD_LEN(max > len - done ? len - done : max) |
+		    PTD_DIR(dir);
+		ptd[i].faddr = PTD_FA(usb_pipedevice(pipe));
+
+		usb_dotoggle(dev, epnum, dir_out);
+		done += PTD_GET_LEN(&ptd[i]);
+		i++;
+		if (i >= PTD_NUM) {
+			ERR("****** Cannot pack buffer! ******");
+			dev->status = USB_ST_BUF_ERR;
+			return -1;
+		}
+	} while (done < len);
+	ptd[i - 1].mps |= PTD_LAST_MSK;
+
+	/* Pack data into FIFO ram */
+	pack_fifo(isp116x, dev, pipe, ptd, i, buffer, len);
+#ifdef EXTRA_DELAY
+	wait_ms(EXTRA_DELAY);
+#endif
+
+	/* Start the data transfer */
+
+	/* Allow more time for a BULK device to react - some are slow */
+	if (usb_pipetype(pipe) == PIPE_BULK)
+		timeout = 5000;
+	else
+		timeout = 100;
+
+	/* Wait for it to complete */
+	for (;;) {
+		/* Check whether the controller is done */
+		stat = isp116x_interrupt(isp116x);
+
+		if (stat < 0) {
+			dev->status = USB_ST_CRC_ERR;
+			break;
+		}
+		if (stat > 0)
+			break;
+
+		/* Check the timeout */
+		if (--timeout)
+			udelay(1);
+		else {
+			ERR("CTL:TIMEOUT ");
+			stat = USB_ST_CRC_ERR;
+			break;
+		}
+	}
+
+	/* We got an Root Hub Status Change interrupt */
+	if (got_rhsc) {
+		isp116x_show_regs(isp116x);
+
+		got_rhsc = 0;
+
+		/* Abuse timeout */
+		timeout = rh_check_port_status(isp116x);
+		if (timeout >= 0) {
+			/*
+			 * FIXME! NOTE! AAAARGH!
+			 * This is potentially dangerous because it assumes
+			 * that only one device is ever plugged in!
+			 */
+			devgone = dev;
+		}
+	}
+
+	/* Ok, now we can read transfer status */
+
+	/* FIFO not ready? */
+	if (!(isp116x_read_reg16(isp116x, HCBUFSTAT) & HCBUFSTAT_ATL_DONE)) {
+		ERR("****** FIFO not ready! ******");
+		dev->status = USB_ST_BUF_ERR;
+		return -1;
+	}
+
+	/* Unpack data from FIFO ram */
+	cc = unpack_fifo(isp116x, dev, pipe, ptd, i, buffer, len);
+
+	/* Mmm... sometime we get 0x0f as cc which is a non sense!
+	 * Just retry the transfer...
+	 */
+	if (cc == 0x0f && retries-- > 0) {
+		usb_dotoggle(dev, epnum, dir_out);
+		goto retry;
+	}
+
+	if (cc != TD_CC_NOERROR) {
+		DBG("****** completition code error %x ******", cc);
+		switch (cc) {
+		case TD_CC_BITSTUFFING:
+			dev->status = USB_ST_BIT_ERR;
+			break;
+		case TD_CC_STALL:
+			dev->status = USB_ST_STALLED;
+			break;
+		case TD_BUFFEROVERRUN:
+		case TD_BUFFERUNDERRUN:
+			dev->status = USB_ST_BUF_ERR;
+			break;
+		default:
+			dev->status = USB_ST_CRC_ERR;
+		}
+		return -cc;
+	}
+
+	dump_msg(dev, pipe, buffer, len, "SUBMIT(ret)");
+
+	dev->status = 0;
+	return done;
+}
+
+/* Adapted from au1x00_usb_ohci.c
+ */
+static int isp116x_submit_rh_msg(struct usb_device *dev, unsigned long pipe,
+				 void *buffer, int transfer_len,
+				 struct devrequest *cmd)
+{
+	struct isp116x *isp116x = &isp116x_dev;
+	u32 tmp = 0;
+
+	int leni = transfer_len;
+	int len = 0;
+	int stat = 0;
+	u32 datab[4];
+	u8 *data_buf = (u8 *) datab;
+	u16 bmRType_bReq;
+	u16 wValue;
+	u16 wIndex;
+	u16 wLength;
+
+	if ((pipe & PIPE_INTERRUPT) == PIPE_INTERRUPT) {
+		INFO("Root-Hub submit IRQ: NOT implemented");
+		return 0;
+	}
+
+	bmRType_bReq = cmd->requesttype | (cmd->request << 8);
+	wValue = swap_16(cmd->value);
+	wIndex = swap_16(cmd->index);
+	wLength = swap_16(cmd->length);
+
+	DBG("--- HUB ----------------------------------------");
+	DBG("submit rh urb, req=%x val=%#x index=%#x len=%d",
+	    bmRType_bReq, wValue, wIndex, wLength);
+	dump_msg(dev, pipe, buffer, transfer_len, "RH");
+	DBG("------------------------------------------------");
+
+	switch (bmRType_bReq) {
+	case RH_GET_STATUS:
+		DBG("RH_GET_STATUS");
+
+		*(__u16 *) data_buf = swap_16(1);
+		len = 2;
+		break;
+
+	case RH_GET_STATUS | RH_INTERFACE:
+		DBG("RH_GET_STATUS | RH_INTERFACE");
+
+		*(__u16 *) data_buf = swap_16(0);
+		len = 2;
+		break;
+
+	case RH_GET_STATUS | RH_ENDPOINT:
+		DBG("RH_GET_STATUS | RH_ENDPOINT");
+
+		*(__u16 *) data_buf = swap_16(0);
+		len = 2;
+		break;
+
+	case RH_GET_STATUS | RH_CLASS:
+		DBG("RH_GET_STATUS | RH_CLASS");
+
+		tmp = isp116x_read_reg32(isp116x, HCRHSTATUS);
+
+		*(__u32 *) data_buf = swap_32(tmp & ~(RH_HS_CRWE | RH_HS_DRWE));
+		len = 4;
+		break;
+
+	case RH_GET_STATUS | RH_OTHER | RH_CLASS:
+		DBG("RH_GET_STATUS | RH_OTHER | RH_CLASS");
+
+		tmp = isp116x_read_reg32(isp116x, HCRHPORT1 + wIndex - 1);
+		*(__u32 *) data_buf = swap_32(tmp);
+		isp116x_show_regs(isp116x);
+		len = 4;
+		break;
+
+	case RH_CLEAR_FEATURE | RH_ENDPOINT:
+		DBG("RH_CLEAR_FEATURE | RH_ENDPOINT");
+
+		switch (wValue) {
+		case RH_ENDPOINT_STALL:
+			DBG("C_HUB_ENDPOINT_STALL");
+			len = 0;
+			break;
+		}
+		break;
+
+	case RH_CLEAR_FEATURE | RH_CLASS:
+		DBG("RH_CLEAR_FEATURE | RH_CLASS");
+
+		switch (wValue) {
+		case RH_C_HUB_LOCAL_POWER:
+			DBG("C_HUB_LOCAL_POWER");
+			len = 0;
+			break;
+
+		case RH_C_HUB_OVER_CURRENT:
+			DBG("C_HUB_OVER_CURRENT");
+			isp116x_write_reg32(isp116x, HCRHSTATUS, RH_HS_OCIC);
+			len = 0;
+			break;
+		}
+		break;
+
+	case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS:
+		DBG("RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS");
+
+		switch (wValue) {
+		case RH_PORT_ENABLE:
+			isp116x_write_reg32(isp116x, HCRHPORT1 + wIndex - 1,
+					    RH_PS_CCS);
+			len = 0;
+			break;
+
+		case RH_PORT_SUSPEND:
+			isp116x_write_reg32(isp116x, HCRHPORT1 + wIndex - 1,
+					    RH_PS_POCI);
+			len = 0;
+			break;
+
+		case RH_PORT_POWER:
+			isp116x_write_reg32(isp116x, HCRHPORT1 + wIndex - 1,
+					    RH_PS_LSDA);
+			len = 0;
+			break;
+
+		case RH_C_PORT_CONNECTION:
+			isp116x_write_reg32(isp116x, HCRHPORT1 + wIndex - 1,
+					    RH_PS_CSC);
+			len = 0;
+			break;
+
+		case RH_C_PORT_ENABLE:
+			isp116x_write_reg32(isp116x, HCRHPORT1 + wIndex - 1,
+					    RH_PS_PESC);
+			len = 0;
+			break;
+
+		case RH_C_PORT_SUSPEND:
+			isp116x_write_reg32(isp116x, HCRHPORT1 + wIndex - 1,
+					    RH_PS_PSSC);
+			len = 0;
+			break;
+
+		case RH_C_PORT_OVER_CURRENT:
+			isp116x_write_reg32(isp116x, HCRHPORT1 + wIndex - 1,
+					    RH_PS_POCI);
+			len = 0;
+			break;
+
+		case RH_C_PORT_RESET:
+			isp116x_write_reg32(isp116x, HCRHPORT1 + wIndex - 1,
+					    RH_PS_PRSC);
+			len = 0;
+			break;
+
+		default:
+			ERR("invalid wValue");
+			stat = USB_ST_STALLED;
+		}
+
+		isp116x_show_regs(isp116x);
+
+		break;
+
+	case RH_SET_FEATURE | RH_OTHER | RH_CLASS:
+		DBG("RH_SET_FEATURE | RH_OTHER | RH_CLASS");
+
+		switch (wValue) {
+		case RH_PORT_SUSPEND:
+			isp116x_write_reg32(isp116x, HCRHPORT1 + wIndex - 1,
+					    RH_PS_PSS);
+			len = 0;
+			break;
+
+		case RH_PORT_RESET:
+			/* Spin until any current reset finishes */
+			while (1) {
+				tmp =
+				    isp116x_read_reg32(isp116x,
+						       HCRHPORT1 + wIndex - 1);
+				if (!(tmp & RH_PS_PRS))
+					break;
+				wait_ms(1);
+			}
+			isp116x_write_reg32(isp116x, HCRHPORT1 + wIndex - 1,
+					    RH_PS_PRS);
+			wait_ms(10);
+
+			len = 0;
+			break;
+
+		case RH_PORT_POWER:
+			isp116x_write_reg32(isp116x, HCRHPORT1 + wIndex - 1,
+					    RH_PS_PPS);
+			len = 0;
+			break;
+
+		case RH_PORT_ENABLE:
+			isp116x_write_reg32(isp116x, HCRHPORT1 + wIndex - 1,
+					    RH_PS_PES);
+			len = 0;
+			break;
+
+		default:
+			ERR("invalid wValue");
+			stat = USB_ST_STALLED;
+		}
+
+		isp116x_show_regs(isp116x);
+
+		break;
+
+	case RH_SET_ADDRESS:
+		DBG("RH_SET_ADDRESS");
+
+		rh_devnum = wValue;
+		len = 0;
+		break;
+
+	case RH_GET_DESCRIPTOR:
+		DBG("RH_GET_DESCRIPTOR: %x, %d", wValue, wLength);
+
+		switch (wValue) {
+		case (USB_DT_DEVICE << 8):	/* device descriptor */
+			len = min_t(unsigned int,
+				    leni, min_t(unsigned int,
+						sizeof(root_hub_dev_des),
+						wLength));
+			data_buf = root_hub_dev_des;
+			break;
+
+		case (USB_DT_CONFIG << 8):	/* configuration descriptor */
+			len = min_t(unsigned int,
+				    leni, min_t(unsigned int,
+						sizeof(root_hub_config_des),
+						wLength));
+			data_buf = root_hub_config_des;
+			break;
+
+		case ((USB_DT_STRING << 8) | 0x00):	/* string 0 descriptors */
+			len = min_t(unsigned int,
+				    leni, min_t(unsigned int,
+						sizeof(root_hub_str_index0),
+						wLength));
+			data_buf = root_hub_str_index0;
+			break;
+
+		case ((USB_DT_STRING << 8) | 0x01):	/* string 1 descriptors */
+			len = min_t(unsigned int,
+				    leni, min_t(unsigned int,
+						sizeof(root_hub_str_index1),
+						wLength));
+			data_buf = root_hub_str_index1;
+			break;
+
+		default:
+			ERR("invalid wValue");
+			stat = USB_ST_STALLED;
+		}
+
+		break;
+
+	case RH_GET_DESCRIPTOR | RH_CLASS:
+		DBG("RH_GET_DESCRIPTOR | RH_CLASS");
+
+		tmp = isp116x_read_reg32(isp116x, HCRHDESCA);
+
+		data_buf[0] = 0x09;	/* min length; */
+		data_buf[1] = 0x29;
+		data_buf[2] = tmp & RH_A_NDP;
+		data_buf[3] = 0;
+		if (tmp & RH_A_PSM)	/* per-port power switching? */
+			data_buf[3] |= 0x01;
+		if (tmp & RH_A_NOCP)	/* no overcurrent reporting? */
+			data_buf[3] |= 0x10;
+		else if (tmp & RH_A_OCPM)	/* per-port overcurrent rep? */
+			data_buf[3] |= 0x08;
+
+		/* Corresponds to data_buf[4-7] */
+		datab[1] = 0;
+		data_buf[5] = (tmp & RH_A_POTPGT) >> 24;
+
+		tmp = isp116x_read_reg32(isp116x, HCRHDESCB);
+
+		data_buf[7] = tmp & RH_B_DR;
+		if (data_buf[2] < 7)
+			data_buf[8] = 0xff;
+		else {
+			data_buf[0] += 2;
+			data_buf[8] = (tmp & RH_B_DR) >> 8;
+			data_buf[10] = data_buf[9] = 0xff;
+		}
+
+		len = min_t(unsigned int, leni,
+			    min_t(unsigned int, data_buf[0], wLength));
+		break;
+
+	case RH_GET_CONFIGURATION:
+		DBG("RH_GET_CONFIGURATION");
+
+		*(__u8 *) data_buf = 0x01;
+		len = 1;
+		break;
+
+	case RH_SET_CONFIGURATION:
+		DBG("RH_SET_CONFIGURATION");
+
+		isp116x_write_reg32(isp116x, HCRHSTATUS, RH_HS_LPSC);
+		len = 0;
+		break;
+
+	default:
+		ERR("*** *** *** unsupported root hub command *** *** ***");
+		stat = USB_ST_STALLED;
+	}
+
+	len = min_t(int, len, leni);
+	if (buffer != data_buf)
+		memcpy(buffer, data_buf, len);
+
+	dev->act_len = len;
+	dev->status = stat;
+	DBG("dev act_len %d, status %d", dev->act_len, dev->status);
+
+	dump_msg(dev, pipe, buffer, transfer_len, "RH(ret)");
+
+	return stat;
+}
+
+/* --- Transfer functions -------------------------------------------------- */
+
+int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
+		   int len, int interval)
+{
+	DBG("dev=%p pipe=%#lx buf=%p size=%d int=%d",
+	    dev, pipe, buffer, len, interval);
+
+	return -1;
+}
+
+int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
+		       int len, struct devrequest *setup)
+{
+	int devnum = usb_pipedevice(pipe);
+	int epnum = usb_pipeendpoint(pipe);
+	int max = max_transfer_len(dev, pipe);
+	int dir_in = usb_pipein(pipe);
+	int done, ret;
+
+	/* Control message is for the HUB? */
+	if (devnum == rh_devnum)
+		return isp116x_submit_rh_msg(dev, pipe, buffer, len, setup);
+
+	/* Ok, no HUB message so send the message to the device */
+
+	/* Setup phase */
+	DBG("--- SETUP PHASE --------------------------------");
+	usb_settoggle(dev, epnum, 1, 0);
+	ret = isp116x_submit_job(dev, pipe,
+				 PTD_DIR_SETUP,
+				 setup, sizeof(struct devrequest));
+	if (ret < 0) {
+		DBG("control setup phase error (ret = %d", ret);
+		return -1;
+	}
+
+	/* Data phase */
+	DBG("--- DATA PHASE ---------------------------------");
+	done = 0;
+	usb_settoggle(dev, epnum, !dir_in, 1);
+	while (done < len) {
+		ret = isp116x_submit_job(dev, pipe,
+					 dir_in ? PTD_DIR_IN : PTD_DIR_OUT,
+					 (__u8 *) buffer + done,
+					 max > len - done ? len - done : max);
+		if (ret < 0) {
+			DBG("control data phase error (ret = %d)", ret);
+			return -1;
+		}
+		done += ret;
+
+		if (dir_in && ret < max)	/* short packet */
+			break;
+	}
+
+	/* Status phase */
+	DBG("--- STATUS PHASE -------------------------------");
+	usb_settoggle(dev, epnum, !dir_in, 1);
+	ret = isp116x_submit_job(dev, pipe,
+				 !dir_in ? PTD_DIR_IN : PTD_DIR_OUT, NULL, 0);
+	if (ret < 0) {
+		DBG("control status phase error (ret = %d", ret);
+		return -1;
+	}
+
+	dev->act_len = done;
+
+	dump_msg(dev, pipe, buffer, len, "DEV(ret)");
+
+	return done;
+}
+
+int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
+		    int len)
+{
+	int dir_out = usb_pipeout(pipe);
+	int max = max_transfer_len(dev, pipe);
+	int done, ret;
+
+	DBG("--- BULK ---------------------------------------");
+	DBG("dev=%ld pipe=%ld buf=%p size=%d dir_out=%d",
+	    usb_pipedevice(pipe), usb_pipeendpoint(pipe), buffer, len, dir_out);
+
+	done = 0;
+	while (done < len) {
+		ret = isp116x_submit_job(dev, pipe,
+					 !dir_out ? PTD_DIR_IN : PTD_DIR_OUT,
+					 (__u8 *) buffer + done,
+					 max > len - done ? len - done : max);
+		if (ret < 0) {
+			DBG("error on bulk message (ret = %d)", ret);
+			return -1;
+		}
+
+		done += ret;
+
+		if (!dir_out && ret < max)	/* short packet */
+			break;
+	}
+
+	dev->act_len = done;
+
+	return 0;
+}
+
+/* --- Basic functions ----------------------------------------------------- */
+
+static int isp116x_sw_reset(struct isp116x *isp116x)
+{
+	int retries = 15;
+	int ret = 0;
+
+	DBG("");
+
+	isp116x->disabled = 1;
+
+	isp116x_write_reg16(isp116x, HCSWRES, HCSWRES_MAGIC);
+	isp116x_write_reg32(isp116x, HCCMDSTAT, HCCMDSTAT_HCR);
+	while (--retries) {
+		/* It usually resets within 1 ms */
+		wait_ms(1);
+		if (!(isp116x_read_reg32(isp116x, HCCMDSTAT) & HCCMDSTAT_HCR))
+			break;
+	}
+	if (!retries) {
+		ERR("software reset timeout");
+		ret = -1;
+	}
+	return ret;
+}
+
+static int isp116x_reset(struct isp116x *isp116x)
+{
+	unsigned long t;
+	u16 clkrdy = 0;
+	int ret, timeout = 15 /* ms */ ;
+
+	DBG("");
+
+	ret = isp116x_sw_reset(isp116x);
+	if (ret)
+		return ret;
+
+	for (t = 0; t < timeout; t++) {
+		clkrdy = isp116x_read_reg16(isp116x, HCuPINT) & HCuPINT_CLKRDY;
+		if (clkrdy)
+			break;
+		wait_ms(1);
+	}
+	if (!clkrdy) {
+		ERR("clock not ready after %dms", timeout);
+		/* After sw_reset the clock won't report to be ready, if
+		   H_WAKEUP pin is high. */
+		ERR("please make sure that the H_WAKEUP pin is pulled low!");
+		ret = -1;
+	}
+	return ret;
+}
+
+static void isp116x_stop(struct isp116x *isp116x)
+{
+	u32 val;
+
+	DBG("");
+
+	isp116x_write_reg16(isp116x, HCuPINTENB, 0);
+
+	/* Switch off ports' power, some devices don't come up
+	   after next 'start' without this */
+	val = isp116x_read_reg32(isp116x, HCRHDESCA);
+	val &= ~(RH_A_NPS | RH_A_PSM);
+	isp116x_write_reg32(isp116x, HCRHDESCA, val);
+	isp116x_write_reg32(isp116x, HCRHSTATUS, RH_HS_LPS);
+
+	isp116x_sw_reset(isp116x);
+}
+
+/*
+ *  Configure the chip. The chip must be successfully reset by now.
+ */
+static int isp116x_start(struct isp116x *isp116x)
+{
+	struct isp116x_platform_data *board = isp116x->board;
+	u32 val;
+
+	DBG("");
+
+	/* Clear interrupt status and disable all interrupt sources */
+	isp116x_write_reg16(isp116x, HCuPINT, 0xff);
+	isp116x_write_reg16(isp116x, HCuPINTENB, 0);
+
+	isp116x_write_reg16(isp116x, HCITLBUFLEN, ISP116x_ITL_BUFSIZE);
+	isp116x_write_reg16(isp116x, HCATLBUFLEN, ISP116x_ATL_BUFSIZE);
+
+	/* Hardware configuration */
+	val = HCHWCFG_DBWIDTH(1);
+	if (board->sel15Kres)
+		val |= HCHWCFG_15KRSEL;
+	/* Remote wakeup won't work without working clock */
+	if (board->remote_wakeup_enable)
+		val |= HCHWCFG_CLKNOTSTOP;
+	if (board->oc_enable)
+		val |= HCHWCFG_ANALOG_OC;
+	isp116x_write_reg16(isp116x, HCHWCFG, val);
+
+	/* --- Root hub configuration */
+	val = (25 << 24) & RH_A_POTPGT;
+	/* AN10003_1.pdf recommends RH_A_NPS (no power switching) to
+	   be always set. Yet, instead, we request individual port
+	   power switching. */
+	val |= RH_A_PSM;
+	/* Report overcurrent per port */
+	val |= RH_A_OCPM;
+	isp116x_write_reg32(isp116x, HCRHDESCA, val);
+	isp116x->rhdesca = isp116x_read_reg32(isp116x, HCRHDESCA);
+
+	val = RH_B_PPCM;
+	isp116x_write_reg32(isp116x, HCRHDESCB, val);
+	isp116x->rhdescb = isp116x_read_reg32(isp116x, HCRHDESCB);
+
+	val = 0;
+	if (board->remote_wakeup_enable)
+		val |= RH_HS_DRWE;
+	isp116x_write_reg32(isp116x, HCRHSTATUS, val);
+	isp116x->rhstatus = isp116x_read_reg32(isp116x, HCRHSTATUS);
+
+	isp116x_write_reg32(isp116x, HCFMINTVL, 0x27782edf);
+
+	/* Go operational */
+	val = HCCONTROL_USB_OPER;
+	if (board->remote_wakeup_enable)
+		val |= HCCONTROL_RWE;
+	isp116x_write_reg32(isp116x, HCCONTROL, val);
+
+	/* Disable ports to avoid race in device enumeration */
+	isp116x_write_reg32(isp116x, HCRHPORT1, RH_PS_CCS);
+	isp116x_write_reg32(isp116x, HCRHPORT2, RH_PS_CCS);
+
+	isp116x_show_regs(isp116x);
+
+	isp116x->disabled = 0;
+
+	return 0;
+}
+
+/* --- Init functions ------------------------------------------------------ */
+
+int isp116x_check_id(struct isp116x *isp116x)
+{
+	int val;
+
+	val = isp116x_read_reg16(isp116x, HCCHIPID);
+	if ((val & HCCHIPID_MASK) != HCCHIPID_MAGIC) {
+		ERR("invalid chip ID %04x", val);
+		return -1;
+	}
+
+	return 0;
+}
+
+int usb_lowlevel_init(void)
+{
+	struct isp116x *isp116x = &isp116x_dev;
+
+	DBG("");
+
+	/* Init device registers addr */
+	isp116x->addr_reg = (u16 *) ISP116X_HCD_ADDR;
+	isp116x->data_reg = (u16 *) ISP116X_HCD_DATA;
+
+	/* Setup specific board settings */
+#ifdef ISP116X_HCD_SEL15kRES
+	isp116x_board.sel15Kres = 1;
+#endif
+#ifdef ISP116X_HCD_OC_ENABLE
+	isp116x_board.oc_enable = 1;
+#endif
+#ifdef ISP116X_HCD_REMOTE_WAKEUP_ENABLE
+	isp116x_board.remote_wakeup_enable = 1;
+#endif
+	isp116x->board = &isp116x_board;
+
+	/* Try to get ISP116x silicon chip ID */
+	if (isp116x_check_id(isp116x) < 0)
+		return -1;
+
+	isp116x->disabled = 1;
+	isp116x->sleeping = 0;
+
+	isp116x_reset(isp116x);
+	isp116x_start(isp116x);
+
+	return 0;
+}
+
+int usb_lowlevel_stop(void)
+{
+	struct isp116x *isp116x = &isp116x_dev;
+
+	DBG("");
+
+	if (!isp116x->disabled)
+		isp116x_stop(isp116x);
+
+	return 0;
+}
+
+#endif				/* CONFIG_USB_ISP116X_HCD */
diff --git a/drivers/isp116x.h b/drivers/isp116x.h
new file mode 100644
index 0000000..a3ce3b5
--- /dev/null
+++ b/drivers/isp116x.h
@@ -0,0 +1,489 @@
+/*
+ * ISP116x register declarations and HCD data structures
+ *
+ * Copyright (C) 2007 Rodolfo Giometti <giometti@linux.it>
+ * Copyright (C) 2007 Eurotech S.p.A. <info@eurotech.it>
+ * Copyright (C) 2005 Olav Kongas <ok@artecdesign.ee>
+ * Portions:
+ * Copyright (C) 2004 Lothar Wassmann
+ * Copyright (C) 2004 Psion Teklogix
+ * Copyright (C) 2004 David Brownell
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifdef DEBUG
+#define DBG(fmt, args...)	\
+		printf("isp116x: %s: " fmt "\n" , __FUNCTION__ , ## args)
+#else
+#define DBG(fmt, args...)	do {} while (0)
+#endif
+
+#ifdef VERBOSE
+#    define VDBG		DBG
+#else
+#    define VDBG(fmt, args...)	do {} while (0)
+#endif
+
+#define ERR(fmt, args...)	\
+		printf("isp116x: %s: " fmt "\n" , __FUNCTION__ , ## args)
+#define WARN(fmt, args...)	\
+		printf("isp116x: %s: " fmt "\n" , __FUNCTION__ , ## args)
+#define INFO(fmt, args...)	\
+		printf("isp116x: " fmt "\n" , ## args)
+
+/* ------------------------------------------------------------------------- */
+
+/* us of 1ms frame */
+#define  MAX_LOAD_LIMIT		850
+
+/* Full speed: max # of bytes to transfer for a single urb
+   at a time must be < 1024 && must be multiple of 64.
+   832 allows transfering 4kiB within 5 frames. */
+#define MAX_TRANSFER_SIZE_FULLSPEED	832
+
+/* Low speed: there is no reason to schedule in very big
+   chunks; often the requested long transfers are for
+   string descriptors containing short strings. */
+#define MAX_TRANSFER_SIZE_LOWSPEED	64
+
+/* Bytetime (us), a rough indication of how much time it
+   would take to transfer a byte of useful data over USB */
+#define BYTE_TIME_FULLSPEED	1
+#define BYTE_TIME_LOWSPEED	20
+
+/* Buffer sizes */
+#define ISP116x_BUF_SIZE	4096
+#define ISP116x_ITL_BUFSIZE	0
+#define ISP116x_ATL_BUFSIZE	((ISP116x_BUF_SIZE) - 2*(ISP116x_ITL_BUFSIZE))
+
+#define ISP116x_WRITE_OFFSET	0x80
+
+/* --- ISP116x registers/bits ---------------------------------------------- */
+
+#define	HCREVISION	0x00
+#define	HCCONTROL	0x01
+#define		HCCONTROL_HCFS	(3 << 6)	/* host controller
+						   functional state */
+#define		HCCONTROL_USB_RESET	(0 << 6)
+#define		HCCONTROL_USB_RESUME	(1 << 6)
+#define		HCCONTROL_USB_OPER	(2 << 6)
+#define		HCCONTROL_USB_SUSPEND	(3 << 6)
+#define		HCCONTROL_RWC	(1 << 9)	/* remote wakeup connected */
+#define		HCCONTROL_RWE	(1 << 10)	/* remote wakeup enable */
+#define	HCCMDSTAT	0x02
+#define		HCCMDSTAT_HCR	(1 << 0)	/* host controller reset */
+#define		HCCMDSTAT_SOC	(3 << 16)	/* scheduling overrun count */
+#define	HCINTSTAT	0x03
+#define		HCINT_SO	(1 << 0)	/* scheduling overrun */
+#define		HCINT_WDH	(1 << 1)	/* writeback of done_head */
+#define		HCINT_SF	(1 << 2)	/* start frame */
+#define		HCINT_RD	(1 << 3)	/* resume detect */
+#define		HCINT_UE	(1 << 4)	/* unrecoverable error */
+#define		HCINT_FNO	(1 << 5)	/* frame number overflow */
+#define		HCINT_RHSC	(1 << 6)	/* root hub status change */
+#define		HCINT_OC	(1 << 30)	/* ownership change */
+#define		HCINT_MIE	(1 << 31)	/* master interrupt enable */
+#define	HCINTENB	0x04
+#define	HCINTDIS	0x05
+#define	HCFMINTVL	0x0d
+#define	HCFMREM		0x0e
+#define	HCFMNUM		0x0f
+#define	HCLSTHRESH	0x11
+#define	HCRHDESCA	0x12
+#define		RH_A_NDP	(0x3 << 0)	/* # downstream ports */
+#define		RH_A_PSM	(1 << 8)	/* power switching mode */
+#define		RH_A_NPS	(1 << 9)	/* no power switching */
+#define		RH_A_DT		(1 << 10)	/* device type (mbz) */
+#define		RH_A_OCPM	(1 << 11)	/* overcurrent protection
+						   mode */
+#define		RH_A_NOCP	(1 << 12)	/* no overcurrent protection */
+#define		RH_A_POTPGT	(0xff << 24)	/* power on -> power good
+						   time */
+#define	HCRHDESCB	0x13
+#define		RH_B_DR		(0xffff << 0)	/* device removable flags */
+#define		RH_B_PPCM	(0xffff << 16)	/* port power control mask */
+#define	HCRHSTATUS	0x14
+#define		RH_HS_LPS	(1 << 0)	/* local power status */
+#define		RH_HS_OCI	(1 << 1)	/* over current indicator */
+#define		RH_HS_DRWE	(1 << 15)	/* device remote wakeup
+						   enable */
+#define		RH_HS_LPSC	(1 << 16)	/* local power status change */
+#define		RH_HS_OCIC	(1 << 17)	/* over current indicator
+						   change */
+#define		RH_HS_CRWE	(1 << 31)	/* clear remote wakeup
+						   enable */
+#define	HCRHPORT1	0x15
+#define		RH_PS_CCS	(1 << 0)	/* current connect status */
+#define		RH_PS_PES	(1 << 1)	/* port enable status */
+#define		RH_PS_PSS	(1 << 2)	/* port suspend status */
+#define		RH_PS_POCI	(1 << 3)	/* port over current
+						   indicator */
+#define		RH_PS_PRS	(1 << 4)	/* port reset status */
+#define		RH_PS_PPS	(1 << 8)	/* port power status */
+#define		RH_PS_LSDA	(1 << 9)	/* low speed device attached */
+#define		RH_PS_CSC	(1 << 16)	/* connect status change */
+#define		RH_PS_PESC	(1 << 17)	/* port enable status change */
+#define		RH_PS_PSSC	(1 << 18)	/* port suspend status
+						   change */
+#define		RH_PS_OCIC	(1 << 19)	/* over current indicator
+						   change */
+#define		RH_PS_PRSC	(1 << 20)	/* port reset status change */
+#define		HCRHPORT_CLRMASK	(0x1f << 16)
+#define	HCRHPORT2	0x16
+#define	HCHWCFG		0x20
+#define		HCHWCFG_15KRSEL		(1 << 12)
+#define		HCHWCFG_CLKNOTSTOP	(1 << 11)
+#define		HCHWCFG_ANALOG_OC	(1 << 10)
+#define		HCHWCFG_DACK_MODE	(1 << 8)
+#define		HCHWCFG_EOT_POL		(1 << 7)
+#define		HCHWCFG_DACK_POL	(1 << 6)
+#define		HCHWCFG_DREQ_POL	(1 << 5)
+#define		HCHWCFG_DBWIDTH_MASK	(0x03 << 3)
+#define		HCHWCFG_DBWIDTH(n)	(((n) << 3) & HCHWCFG_DBWIDTH_MASK)
+#define		HCHWCFG_INT_POL		(1 << 2)
+#define		HCHWCFG_INT_TRIGGER	(1 << 1)
+#define		HCHWCFG_INT_ENABLE	(1 << 0)
+#define	HCDMACFG	0x21
+#define		HCDMACFG_BURST_LEN_MASK	(0x03 << 5)
+#define		HCDMACFG_BURST_LEN(n)	(((n) << 5) & HCDMACFG_BURST_LEN_MASK)
+#define		HCDMACFG_BURST_LEN_1	HCDMACFG_BURST_LEN(0)
+#define		HCDMACFG_BURST_LEN_4	HCDMACFG_BURST_LEN(1)
+#define		HCDMACFG_BURST_LEN_8	HCDMACFG_BURST_LEN(2)
+#define		HCDMACFG_DMA_ENABLE	(1 << 4)
+#define		HCDMACFG_BUF_TYPE_MASK	(0x07 << 1)
+#define		HCDMACFG_CTR_SEL	(1 << 2)
+#define		HCDMACFG_ITLATL_SEL	(1 << 1)
+#define		HCDMACFG_DMA_RW_SELECT	(1 << 0)
+#define	HCXFERCTR	0x22
+#define	HCuPINT		0x24
+#define		HCuPINT_SOF		(1 << 0)
+#define		HCuPINT_ATL		(1 << 1)
+#define		HCuPINT_AIIEOT		(1 << 2)
+#define		HCuPINT_OPR		(1 << 4)
+#define		HCuPINT_SUSP		(1 << 5)
+#define		HCuPINT_CLKRDY		(1 << 6)
+#define	HCuPINTENB	0x25
+#define	HCCHIPID	0x27
+#define		HCCHIPID_MASK		0xff00
+#define		HCCHIPID_MAGIC		0x6100
+#define	HCSCRATCH	0x28
+#define	HCSWRES		0x29
+#define		HCSWRES_MAGIC		0x00f6
+#define	HCITLBUFLEN	0x2a
+#define	HCATLBUFLEN	0x2b
+#define	HCBUFSTAT	0x2c
+#define		HCBUFSTAT_ITL0_FULL	(1 << 0)
+#define		HCBUFSTAT_ITL1_FULL	(1 << 1)
+#define		HCBUFSTAT_ATL_FULL	(1 << 2)
+#define		HCBUFSTAT_ITL0_DONE	(1 << 3)
+#define		HCBUFSTAT_ITL1_DONE	(1 << 4)
+#define		HCBUFSTAT_ATL_DONE	(1 << 5)
+#define	HCRDITL0LEN	0x2d
+#define	HCRDITL1LEN	0x2e
+#define	HCITLPORT	0x40
+#define	HCATLPORT	0x41
+
+/* PTD accessor macros. */
+#define PTD_GET_COUNT(p)	(((p)->count & PTD_COUNT_MSK) >> 0)
+#define PTD_COUNT(v)		(((v) << 0) & PTD_COUNT_MSK)
+#define PTD_GET_TOGGLE(p)	(((p)->count & PTD_TOGGLE_MSK) >> 10)
+#define PTD_TOGGLE(v)		(((v) << 10) & PTD_TOGGLE_MSK)
+#define PTD_GET_ACTIVE(p)	(((p)->count & PTD_ACTIVE_MSK) >> 11)
+#define PTD_ACTIVE(v)		(((v) << 11) & PTD_ACTIVE_MSK)
+#define PTD_GET_CC(p)		(((p)->count & PTD_CC_MSK) >> 12)
+#define PTD_CC(v)		(((v) << 12) & PTD_CC_MSK)
+#define PTD_GET_MPS(p)		(((p)->mps & PTD_MPS_MSK) >> 0)
+#define PTD_MPS(v)		(((v) << 0) & PTD_MPS_MSK)
+#define PTD_GET_SPD(p)		(((p)->mps & PTD_SPD_MSK) >> 10)
+#define PTD_SPD(v)		(((v) << 10) & PTD_SPD_MSK)
+#define PTD_GET_LAST(p)		(((p)->mps & PTD_LAST_MSK) >> 11)
+#define PTD_LAST(v)		(((v) << 11) & PTD_LAST_MSK)
+#define PTD_GET_EP(p)		(((p)->mps & PTD_EP_MSK) >> 12)
+#define PTD_EP(v)		(((v) << 12) & PTD_EP_MSK)
+#define PTD_GET_LEN(p)		(((p)->len & PTD_LEN_MSK) >> 0)
+#define PTD_LEN(v)		(((v) << 0) & PTD_LEN_MSK)
+#define PTD_GET_DIR(p)		(((p)->len & PTD_DIR_MSK) >> 10)
+#define PTD_DIR(v)		(((v) << 10) & PTD_DIR_MSK)
+#define PTD_GET_B5_5(p)		(((p)->len & PTD_B5_5_MSK) >> 13)
+#define PTD_B5_5(v)		(((v) << 13) & PTD_B5_5_MSK)
+#define PTD_GET_FA(p)		(((p)->faddr & PTD_FA_MSK) >> 0)
+#define PTD_FA(v)		(((v) << 0) & PTD_FA_MSK)
+#define PTD_GET_FMT(p)		(((p)->faddr & PTD_FMT_MSK) >> 7)
+#define PTD_FMT(v)		(((v) << 7) & PTD_FMT_MSK)
+
+/*  Hardware transfer status codes -- CC from ptd->count */
+#define TD_CC_NOERROR      0x00
+#define TD_CC_CRC          0x01
+#define TD_CC_BITSTUFFING  0x02
+#define TD_CC_DATATOGGLEM  0x03
+#define TD_CC_STALL        0x04
+#define TD_DEVNOTRESP      0x05
+#define TD_PIDCHECKFAIL    0x06
+#define TD_UNEXPECTEDPID   0x07
+#define TD_DATAOVERRUN     0x08
+#define TD_DATAUNDERRUN    0x09
+    /* 0x0A, 0x0B reserved for hardware */
+#define TD_BUFFEROVERRUN   0x0C
+#define TD_BUFFERUNDERRUN  0x0D
+    /* 0x0E, 0x0F reserved for HCD */
+#define TD_NOTACCESSED     0x0F
+
+/* ------------------------------------------------------------------------- */
+
+#define	LOG2_PERIODIC_SIZE	5	/* arbitrary; this matches OHCI */
+#define	PERIODIC_SIZE		(1 << LOG2_PERIODIC_SIZE)
+
+/* Philips transfer descriptor */
+struct ptd {
+	u16 count;
+#define	PTD_COUNT_MSK	(0x3ff << 0)
+#define	PTD_TOGGLE_MSK	(1 << 10)
+#define	PTD_ACTIVE_MSK	(1 << 11)
+#define	PTD_CC_MSK	(0xf << 12)
+	u16 mps;
+#define	PTD_MPS_MSK	(0x3ff << 0)
+#define	PTD_SPD_MSK	(1 << 10)
+#define	PTD_LAST_MSK	(1 << 11)
+#define	PTD_EP_MSK	(0xf << 12)
+	u16 len;
+#define	PTD_LEN_MSK	(0x3ff << 0)
+#define	PTD_DIR_MSK	(3 << 10)
+#define	PTD_DIR_SETUP	(0)
+#define	PTD_DIR_OUT	(1)
+#define	PTD_DIR_IN	(2)
+#define	PTD_B5_5_MSK	(1 << 13)
+	u16 faddr;
+#define	PTD_FA_MSK	(0x7f << 0)
+#define	PTD_FMT_MSK	(1 << 7)
+} __attribute__ ((packed, aligned(2)));
+
+struct isp116x_ep {
+	struct usb_device *udev;
+	struct ptd ptd;
+
+	u8 maxpacket;
+	u8 epnum;
+	u8 nextpid;
+
+	u16 length;		/* of current packet */
+	unsigned char *data;	/* to databuf */
+
+	u16 error_count;
+};
+
+/* URB struct */
+#define N_URB_TD		48
+#define URB_DEL			1
+typedef struct {
+	struct isp116x_ep *ed;
+	void *transfer_buffer;	/* (in) associated data buffer */
+	int actual_length;	/* (return) actual transfer length */
+	unsigned long pipe;	/* (in) pipe information */
+#if 0
+	int state;
+#endif
+} urb_priv_t;
+
+struct isp116x_platform_data {
+	/* Enable internal resistors on downstream ports */
+	unsigned sel15Kres:1;
+	/* On-chip overcurrent detection */
+	unsigned oc_enable:1;
+	/* Enable wakeup by devices on usb bus (e.g. wakeup
+	   by attachment/detachment or by device activity
+	   such as moving a mouse). When chosen, this option
+	   prevents stopping internal clock, increasing
+	   thereby power consumption in suspended state. */
+	unsigned remote_wakeup_enable:1;
+};
+
+struct isp116x {
+	u16 *addr_reg;
+	u16 *data_reg;
+
+	struct isp116x_platform_data *board;
+
+	struct dentry *dentry;
+	unsigned long stat1, stat2, stat4, stat8, stat16;
+
+	/* Status flags */
+	unsigned disabled:1;
+	unsigned sleeping:1;
+
+	/* Root hub registers */
+	u32 rhdesca;
+	u32 rhdescb;
+	u32 rhstatus;
+	u32 rhport[2];
+
+	/* Schedule for the current frame */
+	struct isp116x_ep *atl_active;
+	int atl_buflen;
+	int atl_bufshrt;
+	int atl_last_dir;
+	int atl_finishing;
+};
+
+/* ------------------------------------------------- */
+
+/* Inter-io delay (ns). The chip is picky about access timings; it
+ * expects at least:
+ * 150ns delay between consecutive accesses to DATA_REG,
+ * 300ns delay between access to ADDR_REG and DATA_REG
+ * OE, WE MUST NOT be changed during these intervals
+ */
+#if defined(UDELAY)
+#define	isp116x_delay(h,d)	udelay(d)
+#else
+#define	isp116x_delay(h,d)	do {} while (0)
+#endif
+
+static inline void isp116x_write_addr(struct isp116x *isp116x, unsigned reg)
+{
+	writew(reg & 0xff, isp116x->addr_reg);
+	isp116x_delay(isp116x, UDELAY);
+}
+
+static inline void isp116x_write_data16(struct isp116x *isp116x, u16 val)
+{
+	writew(val, isp116x->data_reg);
+	isp116x_delay(isp116x, UDELAY);
+}
+
+static inline void isp116x_raw_write_data16(struct isp116x *isp116x, u16 val)
+{
+	__raw_writew(val, isp116x->data_reg);
+	isp116x_delay(isp116x, UDELAY);
+}
+
+static inline u16 isp116x_read_data16(struct isp116x *isp116x)
+{
+	u16 val;
+
+	val = readw(isp116x->data_reg);
+	isp116x_delay(isp116x, UDELAY);
+	return val;
+}
+
+static inline u16 isp116x_raw_read_data16(struct isp116x *isp116x)
+{
+	u16 val;
+
+	val = __raw_readw(isp116x->data_reg);
+	isp116x_delay(isp116x, UDELAY);
+	return val;
+}
+
+static inline void isp116x_write_data32(struct isp116x *isp116x, u32 val)
+{
+	writew(val & 0xffff, isp116x->data_reg);
+	isp116x_delay(isp116x, UDELAY);
+	writew(val >> 16, isp116x->data_reg);
+	isp116x_delay(isp116x, UDELAY);
+}
+
+static inline u32 isp116x_read_data32(struct isp116x *isp116x)
+{
+	u32 val;
+
+	val = (u32) readw(isp116x->data_reg);
+	isp116x_delay(isp116x, UDELAY);
+	val |= ((u32) readw(isp116x->data_reg)) << 16;
+	isp116x_delay(isp116x, UDELAY);
+	return val;
+}
+
+/* Let's keep register access functions out of line. Hint:
+   we wait at least 150 ns at every access.
+*/
+static u16 isp116x_read_reg16(struct isp116x *isp116x, unsigned reg)
+{
+	isp116x_write_addr(isp116x, reg);
+	return isp116x_read_data16(isp116x);
+}
+
+static u32 isp116x_read_reg32(struct isp116x *isp116x, unsigned reg)
+{
+	isp116x_write_addr(isp116x, reg);
+	return isp116x_read_data32(isp116x);
+}
+
+static void isp116x_write_reg16(struct isp116x *isp116x, unsigned reg,
+				unsigned val)
+{
+	isp116x_write_addr(isp116x, reg | ISP116x_WRITE_OFFSET);
+	isp116x_write_data16(isp116x, (u16) (val & 0xffff));
+}
+
+static void isp116x_write_reg32(struct isp116x *isp116x, unsigned reg,
+				unsigned val)
+{
+	isp116x_write_addr(isp116x, reg | ISP116x_WRITE_OFFSET);
+	isp116x_write_data32(isp116x, (u32) val);
+}
+
+/* --- USB HUB constants (not OHCI-specific; see hub.h) -------------------- */
+
+/* destination of request */
+#define RH_INTERFACE               0x01
+#define RH_ENDPOINT                0x02
+#define RH_OTHER                   0x03
+
+#define RH_CLASS                   0x20
+#define RH_VENDOR                  0x40
+
+/* Requests: bRequest << 8 | bmRequestType */
+#define RH_GET_STATUS           0x0080
+#define RH_CLEAR_FEATURE        0x0100
+#define RH_SET_FEATURE          0x0300
+#define RH_SET_ADDRESS          0x0500
+#define RH_GET_DESCRIPTOR       0x0680
+#define RH_SET_DESCRIPTOR       0x0700
+#define RH_GET_CONFIGURATION    0x0880
+#define RH_SET_CONFIGURATION    0x0900
+#define RH_GET_STATE            0x0280
+#define RH_GET_INTERFACE        0x0A80
+#define RH_SET_INTERFACE        0x0B00
+#define RH_SYNC_FRAME           0x0C80
+/* Our Vendor Specific Request */
+#define RH_SET_EP               0x2000
+
+/* Hub port features */
+#define RH_PORT_CONNECTION         0x00
+#define RH_PORT_ENABLE             0x01
+#define RH_PORT_SUSPEND            0x02
+#define RH_PORT_OVER_CURRENT       0x03
+#define RH_PORT_RESET              0x04
+#define RH_PORT_POWER              0x08
+#define RH_PORT_LOW_SPEED          0x09
+
+#define RH_C_PORT_CONNECTION       0x10
+#define RH_C_PORT_ENABLE           0x11
+#define RH_C_PORT_SUSPEND          0x12
+#define RH_C_PORT_OVER_CURRENT     0x13
+#define RH_C_PORT_RESET            0x14
+
+/* Hub features */
+#define RH_C_HUB_LOCAL_POWER       0x00
+#define RH_C_HUB_OVER_CURRENT      0x01
+
+#define RH_DEVICE_REMOTE_WAKEUP    0x00
+#define RH_ENDPOINT_STALL          0x01
+
+#define RH_ACK                     0x01
+#define RH_REQ_ERR                 -1
+#define RH_NACK                    0x00
diff --git a/include/usb.h b/include/usb.h
index 419a7e3..504ccc4 100644
--- a/include/usb.h
+++ b/include/usb.h
@@ -169,7 +169,10 @@ struct usb_device {
  * this is how the lowlevel part communicate with the outer world
  */
 
-#if defined(CONFIG_USB_UHCI) || defined(CONFIG_USB_OHCI) || defined (CONFIG_USB_SL811HS) || defined(CONFIG_USB_OHCI_NEW)
+#if defined(CONFIG_USB_UHCI) || defined(CONFIG_USB_OHCI) || \
+	defined(CONFIG_USB_OHCI_NEW) || defined (CONFIG_USB_SL811HS) || \
+	defined(CONFIG_USB_ISP116X_HCD)
+
 int usb_lowlevel_init(void);
 int usb_lowlevel_stop(void);
 int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,int transfer_len);