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

1 files changed, 924 insertions, 0 deletions

diff --git a/drivers/usb/r8a66597-hcd.c b/drivers/usb/r8a66597-hcd.c
new file mode 100644
index 0000000..3eb4cb0
--- /dev/null
+++ b/drivers/usb/r8a66597-hcd.c
@@ -0,0 +1,924 @@
+/*
+ * R8A66597 HCD (Host Controller Driver) for u-boot
+ *
+ * Copyright (C) 2008  Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#include <common.h>
+#include <usb.h>
+#include <asm/io.h>
+
+#include "r8a66597.h"
+
+#if defined(CONFIG_USB_R8A66597_HCD)
+
+#ifdef R8A66597_DEBUG
+#define R8A66597_DPRINT		printf
+#else
+#define R8A66597_DPRINT(...)
+#endif
+
+static const char hcd_name[] = "r8a66597_hcd";
+static unsigned short clock = CONFIG_R8A66597_XTAL;
+static unsigned short vif = CONFIG_R8A66597_LDRV;
+static unsigned short endian = CONFIG_R8A66597_ENDIAN;
+static struct r8a66597 gr8a66597;
+
+static void set_devadd_reg(struct r8a66597 *r8a66597, u8 r8a66597_address,
+			   u16 usbspd, u8 upphub, u8 hubport, int port)
+{
+	u16 val;
+	unsigned long devadd_reg = get_devadd_addr(r8a66597_address);
+
+	val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001);
+	r8a66597_write(r8a66597, val, devadd_reg);
+}
+
+static int r8a66597_clock_enable(struct r8a66597 *r8a66597)
+{
+	u16 tmp;
+	int i = 0;
+
+#if defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
+	do {
+		r8a66597_write(r8a66597, SCKE, SYSCFG0);
+		tmp = r8a66597_read(r8a66597, SYSCFG0);
+		if (i++ > 1000) {
+			printf("register access fail.\n");
+			return -1;
+		}
+	} while ((tmp & SCKE) != SCKE);
+	r8a66597_write(r8a66597, 0x04, 0x02);
+#else
+	do {
+		r8a66597_write(r8a66597, USBE, SYSCFG0);
+		tmp = r8a66597_read(r8a66597, SYSCFG0);
+		if (i++ > 1000) {
+			printf("register access fail.\n");
+			return -1;
+		}
+	} while ((tmp & USBE) != USBE);
+	r8a66597_bclr(r8a66597, USBE, SYSCFG0);
+	r8a66597_mdfy(r8a66597, clock, XTAL, SYSCFG0);
+
+	i = 0;
+	r8a66597_bset(r8a66597, XCKE, SYSCFG0);
+	do {
+		udelay(1000);
+		tmp = r8a66597_read(r8a66597, SYSCFG0);
+		if (i++ > 500) {
+			printf("register access fail.\n");
+			return -1;
+		}
+	} while ((tmp & SCKE) != SCKE);
+#endif	/* #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) */
+
+	return 0;
+}
+
+static void r8a66597_clock_disable(struct r8a66597 *r8a66597)
+{
+	r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
+	udelay(1);
+#if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
+	r8a66597_bclr(r8a66597, PLLC, SYSCFG0);
+	r8a66597_bclr(r8a66597, XCKE, SYSCFG0);
+	r8a66597_bclr(r8a66597, USBE, SYSCFG0);
+#endif
+}
+
+static void r8a66597_enable_port(struct r8a66597 *r8a66597, int port)
+{
+	u16 val;
+
+	val = port ? DRPD : DCFM | DRPD;
+	r8a66597_bset(r8a66597, val, get_syscfg_reg(port));
+	r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port));
+
+	r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, get_dmacfg_reg(port));
+}
+
+static void r8a66597_disable_port(struct r8a66597 *r8a66597, int port)
+{
+	u16 val, tmp;
+
+	r8a66597_write(r8a66597, 0, get_intenb_reg(port));
+	r8a66597_write(r8a66597, 0, get_intsts_reg(port));
+
+	r8a66597_port_power(r8a66597, port, 0);
+
+	do {
+		tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS;
+		udelay(640);
+	} while (tmp == EDGESTS);
+
+	val = port ? DRPD : DCFM | DRPD;
+	r8a66597_bclr(r8a66597, val, get_syscfg_reg(port));
+	r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port));
+}
+
+static int enable_controller(struct r8a66597 *r8a66597)
+{
+	int ret, port;
+
+	ret = r8a66597_clock_enable(r8a66597);
+	if (ret < 0)
+		return ret;
+
+	r8a66597_bset(r8a66597, vif & LDRV, PINCFG);
+	r8a66597_bset(r8a66597, USBE, SYSCFG0);
+
+	r8a66597_bset(r8a66597, INTL, SOFCFG);
+	r8a66597_write(r8a66597, 0, INTENB0);
+	r8a66597_write(r8a66597, 0, INTENB1);
+	r8a66597_write(r8a66597, 0, INTENB2);
+
+	r8a66597_bset(r8a66597, endian & BIGEND, CFIFOSEL);
+	r8a66597_bset(r8a66597, endian & BIGEND, D0FIFOSEL);
+	r8a66597_bset(r8a66597, endian & BIGEND, D1FIFOSEL);
+	r8a66597_bset(r8a66597, TRNENSEL, SOFCFG);
+
+	for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
+		r8a66597_enable_port(r8a66597, port);
+
+	return 0;
+}
+
+static void disable_controller(struct r8a66597 *r8a66597)
+{
+	int i;
+
+	if (!(r8a66597_read(r8a66597, SYSCFG0) & USBE))
+		return;
+
+	r8a66597_write(r8a66597, 0, INTENB0);
+	r8a66597_write(r8a66597, 0, INTSTS0);
+
+	r8a66597_write(r8a66597, 0, D0FIFOSEL);
+	r8a66597_write(r8a66597, 0, D1FIFOSEL);
+	r8a66597_write(r8a66597, 0, DCPCFG);
+	r8a66597_write(r8a66597, 0x40, DCPMAXP);
+	r8a66597_write(r8a66597, 0, DCPCTR);
+
+	for (i = 0; i <= 10; i++)
+		r8a66597_write(r8a66597, 0, get_devadd_addr(i));
+	for (i = 1; i <= 5; i++) {
+		r8a66597_write(r8a66597, 0, get_pipetre_addr(i));
+		r8a66597_write(r8a66597, 0, get_pipetrn_addr(i));
+	}
+	for (i = 1; i < R8A66597_MAX_NUM_PIPE; i++) {
+		r8a66597_write(r8a66597, 0, get_pipectr_addr(i));
+		r8a66597_write(r8a66597, i, PIPESEL);
+		r8a66597_write(r8a66597, 0, PIPECFG);
+		r8a66597_write(r8a66597, 0, PIPEBUF);
+		r8a66597_write(r8a66597, 0, PIPEMAXP);
+		r8a66597_write(r8a66597, 0, PIPEPERI);
+	}
+
+	for (i = 0; i < R8A66597_MAX_ROOT_HUB; i++)
+		r8a66597_disable_port(r8a66597, i);
+
+	r8a66597_clock_disable(r8a66597);
+}
+
+static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg,
+			      u16 mask, u16 loop)
+{
+	u16 tmp;
+	int i = 0;
+
+	do {
+		tmp = r8a66597_read(r8a66597, reg);
+		if (i++ > 1000000) {
+			printf("register%lx, loop %x is timeout\n", reg, loop);
+			break;
+		}
+	} while ((tmp & mask) != loop);
+}
+
+static void pipe_buffer_setting(struct r8a66597 *r8a66597,
+				struct usb_device *dev, unsigned long pipe)
+{
+	u16 val = 0;
+	u16 pipenum, bufnum, maxpacket;
+
+	if (usb_pipein(pipe)) {
+		pipenum = BULK_IN_PIPENUM;
+		bufnum = BULK_IN_BUFNUM;
+		maxpacket = dev->epmaxpacketin[usb_pipeendpoint(pipe)];
+	} else {
+		pipenum = BULK_OUT_PIPENUM;
+		bufnum = BULK_OUT_BUFNUM;
+		maxpacket = dev->epmaxpacketout[usb_pipeendpoint(pipe)];
+	}
+
+	if (r8a66597->pipe_config & (1 << pipenum))
+		return;
+	r8a66597->pipe_config |= (1 << pipenum);
+
+	r8a66597_bset(r8a66597, ACLRM, get_pipectr_addr(pipenum));
+	r8a66597_bclr(r8a66597, ACLRM, get_pipectr_addr(pipenum));
+	r8a66597_write(r8a66597, pipenum, PIPESEL);
+
+	/* FIXME: This driver support bulk transfer only. */
+	if (!usb_pipein(pipe))
+		val |= R8A66597_DIR;
+	else
+		val |= R8A66597_SHTNAK;
+	val |= R8A66597_BULK | R8A66597_DBLB | usb_pipeendpoint(pipe);
+	r8a66597_write(r8a66597, val, PIPECFG);
+
+	r8a66597_write(r8a66597, (8 << 10) | bufnum, PIPEBUF);
+	r8a66597_write(r8a66597, make_devsel(usb_pipedevice(pipe)) |
+				 maxpacket, PIPEMAXP);
+	r8a66597_write(r8a66597, 0, PIPEPERI);
+	r8a66597_write(r8a66597, SQCLR, get_pipectr_addr(pipenum));
+}
+
+static int send_setup_packet(struct r8a66597 *r8a66597, struct usb_device *dev,
+			     struct devrequest *setup)
+{
+	int i;
+	unsigned short *p = (unsigned short *)setup;
+	unsigned long setup_addr = USBREQ;
+	u16 intsts1;
+	int timeout = 3000;
+	u16 devsel = setup->request == USB_REQ_SET_ADDRESS ? 0 : dev->devnum;
+
+	r8a66597_write(r8a66597, make_devsel(devsel) |
+				 (8 << dev->maxpacketsize), DCPMAXP);
+	r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1);
+
+	for (i = 0; i < 4; i++) {
+		r8a66597_write(r8a66597, le16_to_cpu(p[i]), setup_addr);
+		setup_addr += 2;
+	}
+	r8a66597_write(r8a66597, ~0x0001, BRDYSTS);
+	r8a66597_write(r8a66597, SUREQ, DCPCTR);
+
+	while (1) {
+		intsts1 = r8a66597_read(r8a66597, INTSTS1);
+		if (intsts1 & SACK)
+			break;
+		if (intsts1 & SIGN) {
+			printf("setup packet send error\n");
+			return -1;
+		}
+		if (timeout-- < 0) {
+			printf("setup packet timeout\n");
+			return -1;
+		}
+		udelay(500);
+	}
+
+	return 0;
+}
+
+static int send_bulk_packet(struct r8a66597 *r8a66597, struct usb_device *dev,
+			    unsigned long pipe, void *buffer, int transfer_len)
+{
+	u16 tmp, bufsize;
+	u16 *buf;
+	size_t size;
+
+	R8A66597_DPRINT("%s\n", __func__);
+
+	r8a66597_mdfy(r8a66597, MBW | BULK_OUT_PIPENUM,
+			MBW | CURPIPE, CFIFOSEL);
+	r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, BULK_OUT_PIPENUM);
+	tmp = r8a66597_read(r8a66597, CFIFOCTR);
+	if ((tmp & FRDY) == 0) {
+		printf("%s FRDY is not set (%x)\n", __func__, tmp);
+		return -1;
+	}
+
+	/* prepare parameters */
+	bufsize = dev->epmaxpacketout[usb_pipeendpoint(pipe)];
+	buf = (u16 *)(buffer + dev->act_len);
+	size = min((int)bufsize, transfer_len - dev->act_len);
+
+	/* write fifo */
+	r8a66597_write(r8a66597, ~(1 << BULK_OUT_PIPENUM), BEMPSTS);
+	if (buffer) {
+		r8a66597_write_fifo(r8a66597, CFIFO, buf, size);
+		r8a66597_write(r8a66597, BVAL, CFIFOCTR);
+	}
+
+	/* update parameters */
+	dev->act_len += size;
+
+	r8a66597_mdfy(r8a66597, PID_BUF, PID,
+			get_pipectr_addr(BULK_OUT_PIPENUM));
+
+	while (!(r8a66597_read(r8a66597, BEMPSTS) & (1 << BULK_OUT_PIPENUM)))
+		if (ctrlc())
+			return -1;
+	r8a66597_write(r8a66597, ~(1 << BULK_OUT_PIPENUM), BEMPSTS);
+
+	if (dev->act_len >= transfer_len)
+		r8a66597_mdfy(r8a66597, PID_NAK, PID,
+				get_pipectr_addr(BULK_OUT_PIPENUM));
+
+	return 0;
+}
+
+static int receive_bulk_packet(struct r8a66597 *r8a66597,
+			       struct usb_device *dev,
+			       unsigned long pipe,
+			       void *buffer, int transfer_len)
+{
+	u16 tmp;
+	u16 *buf;
+	const u16 pipenum = BULK_IN_PIPENUM;
+	int rcv_len;
+	int maxpacket = dev->epmaxpacketin[usb_pipeendpoint(pipe)];
+
+	R8A66597_DPRINT("%s\n", __func__);
+
+	/* prepare */
+	if (dev->act_len == 0) {
+		r8a66597_mdfy(r8a66597, PID_NAK, PID,
+				get_pipectr_addr(pipenum));
+		r8a66597_write(r8a66597, ~(1 << pipenum), BRDYSTS);
+
+		r8a66597_write(r8a66597, TRCLR, get_pipetre_addr(pipenum));
+		r8a66597_write(r8a66597,
+				(transfer_len + maxpacket - 1) / maxpacket,
+				get_pipetrn_addr(pipenum));
+		r8a66597_bset(r8a66597, TRENB, get_pipetre_addr(pipenum));
+
+		r8a66597_mdfy(r8a66597, PID_BUF, PID,
+				get_pipectr_addr(pipenum));
+	}
+
+	r8a66597_mdfy(r8a66597, MBW | pipenum, MBW | CURPIPE, CFIFOSEL);
+	r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, pipenum);
+
+	while (!(r8a66597_read(r8a66597, BRDYSTS) & (1 << pipenum)))
+		if (ctrlc())
+			return -1;
+	r8a66597_write(r8a66597, ~(1 << pipenum), BRDYSTS);
+
+	tmp = r8a66597_read(r8a66597, CFIFOCTR);
+	if ((tmp & FRDY) == 0) {
+		printf("%s FRDY is not set. (%x)\n", __func__, tmp);
+		return -1;
+	}
+
+	buf = (u16 *)(buffer + dev->act_len);
+	rcv_len = tmp & DTLN;
+	dev->act_len += rcv_len;
+
+	if (buffer) {
+		if (rcv_len == 0)
+			r8a66597_write(r8a66597, BCLR, CFIFOCTR);
+		else
+			r8a66597_read_fifo(r8a66597, CFIFO, buf, rcv_len);
+	}
+
+	return 0;
+}
+
+static int receive_control_packet(struct r8a66597 *r8a66597,
+				  struct usb_device *dev,
+				  void *buffer, int transfer_len)
+{
+	u16 tmp;
+	int rcv_len;
+
+	/* FIXME: limit transfer size : 64byte or less */
+
+	r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
+	r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
+	r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
+	r8a66597_bset(r8a66597, SQSET, DCPCTR);
+	r8a66597_write(r8a66597, BCLR, CFIFOCTR);
+	r8a66597_mdfy(r8a66597, PID_BUF, PID, DCPCTR);
+
+	while (!(r8a66597_read(r8a66597, BRDYSTS) & 0x0001))
+		if (ctrlc())
+			return -1;
+	r8a66597_write(r8a66597, ~0x0001, BRDYSTS);
+
+	r8a66597_mdfy(r8a66597, MBW, MBW | CURPIPE, CFIFOSEL);
+	r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
+
+	tmp = r8a66597_read(r8a66597, CFIFOCTR);
+	if ((tmp & FRDY) == 0) {
+		printf("%s FRDY is not set. (%x)\n", __func__, tmp);
+		return -1;
+	}
+
+	rcv_len = tmp & DTLN;
+	dev->act_len += rcv_len;
+
+	r8a66597_mdfy(r8a66597, PID_NAK, PID, DCPCTR);
+
+	if (buffer) {
+		if (rcv_len == 0)
+			r8a66597_write(r8a66597, BCLR, DCPCTR);
+		else
+			r8a66597_read_fifo(r8a66597, CFIFO, buffer, rcv_len);
+	}
+
+	return 0;
+}
+
+static int send_status_packet(struct r8a66597 *r8a66597,
+			       unsigned long pipe)
+{
+	r8a66597_bset(r8a66597, SQSET, DCPCTR);
+	r8a66597_mdfy(r8a66597, PID_NAK, PID, DCPCTR);
+
+	if (usb_pipein(pipe)) {
+		r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
+		r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
+		r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
+		r8a66597_write(r8a66597, ~BEMP0, BEMPSTS);
+		r8a66597_write(r8a66597, BCLR | BVAL, CFIFOCTR);
+	} else {
+		r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
+		r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
+		r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
+		r8a66597_write(r8a66597, BCLR, CFIFOCTR);
+	}
+	r8a66597_mdfy(r8a66597, PID_BUF, PID, DCPCTR);
+
+	while (!(r8a66597_read(r8a66597, BEMPSTS) & 0x0001))
+		if (ctrlc())
+			return -1;
+
+	return 0;
+}
+
+static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port)
+{
+	int count = R8A66597_MAX_SAMPLING;
+	unsigned short syssts, old_syssts;
+
+	R8A66597_DPRINT("%s\n", __func__);
+
+	old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port) & LNST);
+	while (count > 0) {
+		wait_ms(R8A66597_RH_POLL_TIME);
+
+		syssts = r8a66597_read(r8a66597, get_syssts_reg(port) & LNST);
+		if (syssts == old_syssts) {
+			count--;
+		} else {
+			count = R8A66597_MAX_SAMPLING;
+			old_syssts = syssts;
+		}
+	}
+}
+
+static void r8a66597_bus_reset(struct r8a66597 *r8a66597, int port)
+{
+	wait_ms(10);
+	r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT, get_dvstctr_reg(port));
+	wait_ms(50);
+	r8a66597_mdfy(r8a66597, UACT, USBRST | UACT, get_dvstctr_reg(port));
+	wait_ms(50);
+}
+
+static int check_usb_device_connecting(struct r8a66597 *r8a66597)
+{
+	int timeout = 10000;	/* 100usec * 10000 = 1sec */
+	int i;
+
+	for (i = 0; i < 5; i++) {
+		/* check a usb cable connect */
+		while (!(r8a66597_read(r8a66597, INTSTS1) & ATTCH)) {
+			if (timeout-- < 0) {
+				printf("%s timeout.\n", __func__);
+				return -1;
+			}
+			udelay(100);
+		}
+
+		/* check a data line */
+		r8a66597_check_syssts(r8a66597, 0);
+
+		r8a66597_bus_reset(r8a66597, 0);
+		r8a66597->speed = get_rh_usb_speed(r8a66597, 0);
+
+		if (!(r8a66597_read(r8a66597, INTSTS1) & DTCH)) {
+			r8a66597->port_change = USB_PORT_STAT_C_CONNECTION;
+			r8a66597->port_status = USB_PORT_STAT_CONNECTION |
+						USB_PORT_STAT_ENABLE;
+			return 0;	/* success */
+		}
+
+		R8A66597_DPRINT("USB device has detached. retry = %d\n", i);
+		r8a66597_write(r8a66597, ~DTCH, INTSTS1);
+	}
+
+	return -1;	/* fail */
+}
+
+/* based on usb_ohci.c */
+#define min_t(type, x, y) \
+		({ type __x = (x); type __y = (y); __x < __y ? __x: __y; })
+/*-------------------------------------------------------------------------*
+ * 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; */
+
+	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 */
+	0x02,	    /*	__u16 ep_wMaxPacketSize; ((MAX_ROOT_PORTS + 1) / 8 */
+	0x00,
+	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[] =
+{
+	34,			/*  __u8  bLength; */
+	0x03,			/*  __u8  bDescriptorType; String-descriptor */
+	'R',			/*  __u8  Unicode */
+	0,				/*  __u8  Unicode */
+	'8',			/*  __u8  Unicode */
+	0,				/*  __u8  Unicode */
+	'A',			/*  __u8  Unicode */
+	0,				/*  __u8  Unicode */
+	'6',			/*  __u8  Unicode */
+	0,				/*  __u8  Unicode */
+	'6',			/*  __u8  Unicode */
+	0,				/*  __u8  Unicode */
+	'5',			/*  __u8  Unicode */
+	0,				/*  __u8  Unicode */
+	'9',			/*  __u8  Unicode */
+	0,				/*  __u8  Unicode */
+	'7',			/*  __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 */
+	'H',			/*  __u8  Unicode */
+	0,				/*  __u8  Unicode */
+	'u',			/*  __u8  Unicode */
+	0,				/*  __u8  Unicode */
+	'b',			/*  __u8  Unicode */
+	0,				/*  __u8  Unicode */
+};
+
+static int r8a66597_submit_rh_msg(struct usb_device *dev, unsigned long pipe,
+			void *buffer, int transfer_len, struct devrequest *cmd)
+{
+	struct r8a66597 *r8a66597 = &gr8a66597;
+	int leni = transfer_len;
+	int len = 0;
+	int stat = 0;
+	__u16 bmRType_bReq;
+	__u16 wValue;
+	__u16 wIndex;
+	__u16 wLength;
+	unsigned char data[32];
+
+	R8A66597_DPRINT("%s\n", __func__);
+
+	if ((pipe & PIPE_INTERRUPT) == PIPE_INTERRUPT) {
+		printf("Root-Hub submit IRQ: NOT implemented");
+		return 0;
+	}
+
+	bmRType_bReq  = cmd->requesttype | (cmd->request << 8);
+	wValue	      = cpu_to_le16 (cmd->value);
+	wIndex	      = cpu_to_le16 (cmd->index);
+	wLength	      = cpu_to_le16 (cmd->length);
+
+	switch (bmRType_bReq) {
+	case RH_GET_STATUS:
+		*(__u16 *)buffer = cpu_to_le16(1);
+		len = 2;
+		break;
+	case RH_GET_STATUS | RH_INTERFACE:
+		*(__u16 *)buffer = cpu_to_le16(0);
+		len = 2;
+		break;
+	case RH_GET_STATUS | RH_ENDPOINT:
+		*(__u16 *)buffer = cpu_to_le16(0);
+		len = 2;
+		break;
+	case RH_GET_STATUS | RH_CLASS:
+		*(__u32 *)buffer = cpu_to_le32(0);
+		len = 4;
+		break;
+	case RH_GET_STATUS | RH_OTHER | RH_CLASS:
+		*(__u32 *)buffer = cpu_to_le32(r8a66597->port_status |
+						(r8a66597->port_change << 16));
+		len = 4;
+		break;
+	case RH_CLEAR_FEATURE | RH_ENDPOINT:
+	case RH_CLEAR_FEATURE | RH_CLASS:
+		break;
+
+	case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS:
+		switch (wValue) {
+		case RH_C_PORT_CONNECTION:
+			r8a66597->port_change &= ~USB_PORT_STAT_C_CONNECTION;
+			break;
+		}
+		break;
+
+	case RH_SET_FEATURE | RH_OTHER | RH_CLASS:
+		switch (wValue) {
+		case (RH_PORT_SUSPEND):
+			break;
+		case (RH_PORT_RESET):
+			r8a66597_bus_reset(r8a66597, 0);
+			break;
+		case (RH_PORT_POWER):
+			break;
+		case (RH_PORT_ENABLE):
+			break;
+		}
+		break;
+	case RH_SET_ADDRESS:
+		gr8a66597.rh_devnum = wValue;
+		break;
+	case RH_GET_DESCRIPTOR:
+		switch ((wValue & 0xff00) >> 8) {
+		case (0x01): /* device descriptor */
+			len = min_t(unsigned int,
+				  leni,
+				  min_t(unsigned int,
+				      sizeof(root_hub_dev_des),
+				      wLength));
+			memcpy(buffer, root_hub_dev_des, len);
+			break;
+		case (0x02): /* configuration descriptor */
+			len = min_t(unsigned int,
+				  leni,
+				  min_t(unsigned int,
+				      sizeof(root_hub_config_des),
+				      wLength));
+			memcpy(buffer, root_hub_config_des, len);
+			break;
+		case (0x03): /* string descriptors */
+			if (wValue == 0x0300) {
+				len = min_t(unsigned int,
+					  leni,
+					  min_t(unsigned int,
+					      sizeof(root_hub_str_index0),
+					      wLength));
+				memcpy(buffer, root_hub_str_index0, len);
+			}
+			if (wValue == 0x0301) {
+				len = min_t(unsigned int,
+					  leni,
+					  min_t(unsigned int,
+					      sizeof(root_hub_str_index1),
+					      wLength));
+				memcpy(buffer, root_hub_str_index1, len);
+			}
+			break;
+		default:
+			stat = USB_ST_STALLED;
+		}
+		break;
+
+	case RH_GET_DESCRIPTOR | RH_CLASS:
+	{
+		__u32 temp = 0x00000001;
+
+		data[0] = 9;		/* min length; */
+		data[1] = 0x29;
+		data[2] = temp & RH_A_NDP;
+		data[3] = 0;
+		if (temp & RH_A_PSM)
+			data[3] |= 0x1;
+		if (temp & RH_A_NOCP)
+			data[3] |= 0x10;
+		else if (temp & RH_A_OCPM)
+			data[3] |= 0x8;
+
+		/* corresponds to data[4-7] */
+		data[5] = (temp & RH_A_POTPGT) >> 24;
+		data[7] = temp & RH_B_DR;
+		if (data[2] < 7) {
+			data[8] = 0xff;
+		} else {
+			data[0] += 2;
+			data[8] = (temp & RH_B_DR) >> 8;
+			data[10] = data[9] = 0xff;
+		}
+
+		len = min_t(unsigned int, leni,
+			    min_t(unsigned int, data[0], wLength));
+		memcpy(buffer, data, len);
+		break;
+	}
+
+	case RH_GET_CONFIGURATION:
+		*(__u8 *) buffer = 0x01;
+		len = 1;
+		break;
+	case RH_SET_CONFIGURATION:
+		break;
+	default:
+		dbg("unsupported root hub command");
+		stat = USB_ST_STALLED;
+	}
+
+	wait_ms(1);
+
+	len = min_t(int, len, leni);
+
+	dev->act_len = len;
+	dev->status = stat;
+
+	return stat;
+}
+
+int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
+		    int transfer_len)
+{
+	struct r8a66597 *r8a66597 = &gr8a66597;
+	int ret = 0;
+
+	R8A66597_DPRINT("%s\n", __func__);
+	R8A66597_DPRINT("pipe = %08x, buffer = %p, len = %d, devnum = %d\n",
+			pipe, buffer, transfer_len, dev->devnum);
+
+	set_devadd_reg(r8a66597, dev->devnum, r8a66597->speed, 0, 0, 0);
+
+	pipe_buffer_setting(r8a66597, dev, pipe);
+
+	dev->act_len = 0;
+	while (dev->act_len < transfer_len && ret == 0) {
+		if (ctrlc())
+			return -1;
+
+		if (usb_pipein(pipe))
+			ret = receive_bulk_packet(r8a66597, dev, pipe, buffer,
+							transfer_len);
+		else
+			ret = send_bulk_packet(r8a66597, dev, pipe, buffer,
+							transfer_len);
+	}
+
+	if (ret == 0)
+		dev->status = 0;
+
+	return ret;
+}
+
+int submit_control_msg(struct usb_device *dev, unsigned long pipe,
+		       void *buffer, int transfer_len, struct devrequest *setup)
+{
+	struct r8a66597 *r8a66597 = &gr8a66597;
+	u16 r8a66597_address = setup->request == USB_REQ_SET_ADDRESS ?
+					0 : dev->devnum;
+
+	R8A66597_DPRINT("%s\n", __func__);
+	if (usb_pipedevice(pipe) == r8a66597->rh_devnum)
+		return r8a66597_submit_rh_msg(dev, pipe, buffer, transfer_len,
+						setup);
+
+	R8A66597_DPRINT("%s: setup\n", __func__);
+	set_devadd_reg(r8a66597, r8a66597_address, r8a66597->speed, 0, 0, 0);
+
+	if (send_setup_packet(r8a66597, dev, setup) < 0) {
+		printf("setup packet send error\n");
+		return -1;
+	}
+
+	if (usb_pipein(pipe))
+		if (receive_control_packet(r8a66597, dev, buffer,
+						transfer_len) < 0)
+			return -1;
+
+	if (send_status_packet(r8a66597, pipe) < 0)
+		return -1;
+
+	dev->status = 0;
+
+	return 0;
+}
+
+int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
+			int transfer_len, int interval)
+{
+	/* no implement */
+	R8A66597_DPRINT("%s\n", __func__);
+	return 0;
+}
+
+void usb_event_poll(void)
+{
+	/* no implement */
+	R8A66597_DPRINT("%s\n", __func__);
+}
+
+int usb_lowlevel_init(void)
+{
+	struct r8a66597 *r8a66597 = &gr8a66597;
+
+	R8A66597_DPRINT("%s\n", __func__);
+
+	memset(r8a66597, 0, sizeof(r8a66597));
+	r8a66597->reg = CONFIG_R8A66597_BASE_ADDR;
+
+	disable_controller(r8a66597);
+	wait_ms(100);
+
+	enable_controller(r8a66597);
+	r8a66597_port_power(r8a66597, 0 , 1);
+
+	/* check usb device */
+	check_usb_device_connecting(r8a66597);
+
+	wait_ms(50);
+
+	return 0;
+}
+
+int usb_lowlevel_stop(void)
+{
+	disable_controller(&gr8a66597);
+
+	return 0;
+}
+
+#endif	/* CONFIG_USB_R8A66597_HCD */
+