Merge commit '87ddedd'

1 files changed, 737 insertions, 0 deletions

diff --git a/drivers/usb/sl811_usb.c b/drivers/usb/sl811_usb.c
new file mode 100644
index 0000000..c1f8427
--- /dev/null
+++ b/drivers/usb/sl811_usb.c
@@ -0,0 +1,737 @@
+/*
+ * (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>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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
+ */
+
+#include <common.h>
+#ifdef CONFIG_USB_SL811HS
+#include <mpc8xx.h>
+#include <usb.h>
+#include "sl811.h"
+
+#include "../../board/kup/common/kup.h"
+
+#ifdef __PPC__
+# define EIEIO		__asm__ volatile ("eieio")
+#else
+# define EIEIO		/* nothing */
+#endif
+
+#define	 SL811_ADR (0x50000000)
+#define	 SL811_DAT (0x50000001)
+
+#define mdelay(n) ({unsigned long msec=(n); while (msec--) udelay(1000);})
+
+#ifdef SL811_DEBUG
+static int debug = 9;
+#endif
+
+static int root_hub_devnum = 0;
+static struct usb_port_status rh_status = { 0 };/* root hub port status */
+
+static int sl811_rh_submit_urb(struct usb_device *usb_dev, unsigned long pipe,
+			       void *data, int buf_len, struct devrequest *cmd);
+
+static void sl811_write (__u8 index, __u8 data)
+{
+	*(volatile unsigned char *) (SL811_ADR) = index;
+	EIEIO;
+	*(volatile unsigned char *) (SL811_DAT) = data;
+	EIEIO;
+}
+
+static __u8 sl811_read (__u8 index)
+{
+	__u8 data;
+
+	*(volatile unsigned char *) (SL811_ADR) = index;
+	EIEIO;
+	data = *(volatile unsigned char *) (SL811_DAT);
+	EIEIO;
+	return (data);
+}
+
+/*
+ * Read consecutive bytes of data from the SL811H/SL11H buffer
+ */
+static void inline sl811_read_buf(__u8 offset, __u8 *buf, __u8 size)
+{
+	*(volatile unsigned char *) (SL811_ADR) = offset;
+	EIEIO;
+	while (size--) {
+		*buf++ = *(volatile unsigned char *) (SL811_DAT);
+		EIEIO;
+	}
+}
+
+/*
+ * Write consecutive bytes of data to the SL811H/SL11H buffer
+ */
+static void inline sl811_write_buf(__u8 offset, __u8 *buf, __u8 size)
+{
+	*(volatile unsigned char *) (SL811_ADR) = offset;
+	EIEIO;
+	while (size--) {
+		*(volatile unsigned char *) (SL811_DAT) = *buf++;
+		EIEIO;
+	}
+}
+
+int usb_init_kup4x (void)
+{
+	volatile immap_t *immap = (immap_t *) CFG_IMMR;
+	volatile memctl8xx_t *memctl = &immap->im_memctl;
+	int i;
+	unsigned char tmp;
+
+	memctl = &immap->im_memctl;
+	memctl->memc_or7 = 0xFFFF8726;
+	memctl->memc_br7 = 0x50000401;	/* start at 0x50000000 */
+	/* BP 14 low = USB ON */
+	immap->im_cpm.cp_pbdat &= ~(BP_USB_VCC);
+	/* PB 14 nomal port */
+	immap->im_cpm.cp_pbpar &= ~(BP_USB_VCC);
+	/* output */
+	immap->im_cpm.cp_pbdir |= (BP_USB_VCC);
+
+	puts ("USB:   ");
+
+	for (i = 0x10; i < 0xff; i++) {
+		sl811_write(i, i);
+		tmp = (sl811_read(i));
+		if (tmp != i) {
+			printf ("SL811 compare error index=0x%02x read=0x%02x\n", i, tmp);
+			return (-1);
+		}
+	}
+	printf ("SL811 ready\n");
+	return (0);
+}
+
+/*
+ * This function resets SL811HS controller and detects the speed of
+ * the connecting device
+ *
+ * Return: 0 = no device attached; 1 = USB device attached
+ */
+static int sl811_hc_reset(void)
+{
+	int status ;
+
+	sl811_write(SL811_CTRL2, SL811_CTL2_HOST | SL811_12M_HI);
+	sl811_write(SL811_CTRL1, SL811_CTRL1_RESET);
+
+	mdelay(20);
+
+	/* Disable hardware SOF generation, clear all irq status. */
+	sl811_write(SL811_CTRL1, 0);
+	mdelay(2);
+	sl811_write(SL811_INTRSTS, 0xff);
+	status = sl811_read(SL811_INTRSTS);
+
+	if (status & SL811_INTR_NOTPRESENT) {
+		/* Device is not present */
+		PDEBUG(0, "Device not present\n");
+		rh_status.wPortStatus &= ~(USB_PORT_STAT_CONNECTION | USB_PORT_STAT_ENABLE);
+		rh_status.wPortChange |= USB_PORT_STAT_C_CONNECTION;
+		sl811_write(SL811_INTR, SL811_INTR_INSRMV);
+		return 0;
+	}
+
+	/* Send SOF to address 0, endpoint 0. */
+	sl811_write(SL811_LEN_B, 0);
+	sl811_write(SL811_PIDEP_B, PIDEP(USB_PID_SOF, 0));
+	sl811_write(SL811_DEV_B, 0x00);
+	sl811_write(SL811_SOFLOW, SL811_12M_LOW);
+
+	if (status & SL811_INTR_SPEED_FULL) {
+		/* full speed device connect directly to root hub */
+		PDEBUG (0, "Full speed Device attached\n");
+
+		sl811_write(SL811_CTRL1, SL811_CTRL1_RESET);
+		mdelay(20);
+		sl811_write(SL811_CTRL2, SL811_CTL2_HOST | SL811_12M_HI);
+		sl811_write(SL811_CTRL1, SL811_CTRL1_SOF);
+
+		/* start the SOF or EOP */
+		sl811_write(SL811_CTRL_B, SL811_USB_CTRL_ARM);
+		rh_status.wPortStatus |= USB_PORT_STAT_CONNECTION;
+		rh_status.wPortStatus &= ~USB_PORT_STAT_LOW_SPEED;
+		mdelay(2);
+		sl811_write(SL811_INTRSTS, 0xff);
+	} else {
+		/* slow speed device connect directly to root-hub */
+		PDEBUG(0, "Low speed Device attached\n");
+
+		sl811_write(SL811_CTRL1, SL811_CTRL1_RESET);
+		mdelay(20);
+		sl811_write(SL811_CTRL2, SL811_CTL2_HOST | SL811_CTL2_DSWAP | SL811_12M_HI);
+		sl811_write(SL811_CTRL1, SL811_CTRL1_SPEED_LOW | SL811_CTRL1_SOF);
+
+		/* start the SOF or EOP */
+		sl811_write(SL811_CTRL_B, SL811_USB_CTRL_ARM);
+		rh_status.wPortStatus |= USB_PORT_STAT_CONNECTION | USB_PORT_STAT_LOW_SPEED;
+		mdelay(2);
+		sl811_write(SL811_INTRSTS, 0xff);
+	}
+
+	rh_status.wPortChange |= USB_PORT_STAT_C_CONNECTION;
+	sl811_write(SL811_INTR, /*SL811_INTR_INSRMV*/SL811_INTR_DONE_A);
+
+	return 1;
+}
+
+int usb_lowlevel_init(void)
+{
+	root_hub_devnum = 0;
+	sl811_hc_reset();
+	return 0;
+}
+
+int usb_lowlevel_stop(void)
+{
+	sl811_hc_reset();
+	return 0;
+}
+
+static int calc_needed_buswidth(int bytes, int need_preamble)
+{
+	return !need_preamble ? bytes * 8 + 256 : 8 * 8 * bytes + 2048;
+}
+
+static int sl811_send_packet(struct usb_device *dev, unsigned long pipe, __u8 *buffer, int len)
+{
+	__u8 ctrl = SL811_USB_CTRL_ARM | SL811_USB_CTRL_ENABLE;
+	__u16 status = 0;
+	int err = 0, time_start = get_timer(0);
+	int need_preamble = !(rh_status.wPortStatus & USB_PORT_STAT_LOW_SPEED) &&
+		usb_pipeslow(pipe);
+
+	if (len > 239)
+		return -1;
+
+	if (usb_pipeout(pipe))
+		ctrl |= SL811_USB_CTRL_DIR_OUT;
+	if (usb_gettoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe)))
+		ctrl |= SL811_USB_CTRL_TOGGLE_1;
+	if (need_preamble)
+		ctrl |= SL811_USB_CTRL_PREAMBLE;
+
+	sl811_write(SL811_INTRSTS, 0xff);
+
+	while (err < 3) {
+		sl811_write(SL811_ADDR_A, 0x10);
+		sl811_write(SL811_LEN_A, len);
+		if (usb_pipeout(pipe) && len)
+			sl811_write_buf(0x10, buffer, len);
+
+		if (!(rh_status.wPortStatus & USB_PORT_STAT_LOW_SPEED) &&
+		    sl811_read(SL811_SOFCNTDIV)*64 < calc_needed_buswidth(len, need_preamble))
+			ctrl |= SL811_USB_CTRL_SOF;
+		else
+			ctrl &= ~SL811_USB_CTRL_SOF;
+
+		sl811_write(SL811_CTRL_A, ctrl);
+ 		while (!(sl811_read(SL811_INTRSTS) & SL811_INTR_DONE_A)) {
+			if (5*CFG_HZ < get_timer(time_start)) {
+				printf("USB transmit timed out\n");
+				return -USB_ST_CRC_ERR;
+			}
+		}
+
+		sl811_write(SL811_INTRSTS, 0xff);
+		status = sl811_read(SL811_STS_A);
+
+		if (status & SL811_USB_STS_ACK) {
+			int remainder = sl811_read(SL811_CNT_A);
+			if (remainder) {
+				PDEBUG(0, "usb transfer remainder = %d\n", remainder);
+				len -= remainder;
+			}
+			if (usb_pipein(pipe) && len)
+				sl811_read_buf(0x10, buffer, len);
+			return len;
+		}
+
+		if ((status & SL811_USB_STS_NAK) == SL811_USB_STS_NAK)
+			continue;
+
+		PDEBUG(0, "usb transfer error %#x\n", (int)status);
+		err++;
+	}
+
+	err = 0;
+
+	if (status & SL811_USB_STS_ERROR)
+		err |= USB_ST_BUF_ERR;
+	if (status & SL811_USB_STS_TIMEOUT)
+		err |= USB_ST_CRC_ERR;
+	if (status & SL811_USB_STS_STALL)
+		err |= USB_ST_STALLED;
+
+	return -err;
+}
+
+int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
+		    int len)
+{
+	int dir_out = usb_pipeout(pipe);
+	int ep = usb_pipeendpoint(pipe);
+	int max = usb_maxpacket(dev, pipe);
+	int done = 0;
+
+	PDEBUG(7, "dev = %ld pipe = %ld buf = %p size = %d dir_out = %d\n",
+	       usb_pipedevice(pipe), usb_pipeendpoint(pipe), buffer, len, dir_out);
+
+	dev->status = 0;
+
+	sl811_write(SL811_DEV_A, usb_pipedevice(pipe));
+	sl811_write(SL811_PIDEP_A, PIDEP(!dir_out ? USB_PID_IN : USB_PID_OUT, ep));
+	while (done < len) {
+		int res = sl811_send_packet(dev, pipe, (__u8*)buffer+done,
+					    max > len - done ? len - done : max);
+		if (res < 0) {
+			dev->status = -res;
+			return res;
+		}
+
+		if (!dir_out && res < max) /* short packet */
+			break;
+
+		done += res;
+		usb_dotoggle(dev, ep, dir_out);
+	}
+
+	dev->act_len = done;
+
+	return 0;
+}
+
+int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
+		       int len,struct devrequest *setup)
+{
+	int done = 0;
+	int devnum = usb_pipedevice(pipe);
+	int ep = usb_pipeendpoint(pipe);
+
+	dev->status = 0;
+
+	if (devnum == root_hub_devnum)
+		return sl811_rh_submit_urb(dev, pipe, buffer, len, setup);
+
+	PDEBUG(7, "dev = %d pipe = %ld buf = %p size = %d rt = %#x req = %#x bus = %i\n",
+	       devnum, ep, buffer, len, (int)setup->requesttype,
+	       (int)setup->request, sl811_read(SL811_SOFCNTDIV)*64);
+
+	sl811_write(SL811_DEV_A, devnum);
+	sl811_write(SL811_PIDEP_A, PIDEP(USB_PID_SETUP, ep));
+	/* setup phase */
+	usb_settoggle(dev, ep, 1, 0);
+	if (sl811_send_packet(dev, usb_sndctrlpipe(dev, ep),
+			      (__u8*)setup, sizeof(*setup)) == sizeof(*setup)) {
+		int dir_in = usb_pipein(pipe);
+		int max = usb_maxpacket(dev, pipe);
+
+		/* data phase */
+		sl811_write(SL811_PIDEP_A,
+			    PIDEP(dir_in ? USB_PID_IN : USB_PID_OUT, ep));
+		usb_settoggle(dev, ep, usb_pipeout(pipe), 1);
+		while (done < len) {
+			int res = sl811_send_packet(dev, pipe, (__u8*)buffer+done,
+						    max > len - done ? len - done : max);
+			if (res < 0) {
+				PDEBUG(0, "status data failed!\n");
+				dev->status = -res;
+				return 0;
+			}
+			done += res;
+			usb_dotoggle(dev, ep, usb_pipeout(pipe));
+			if (dir_in && res < max) /* short packet */
+				break;
+		}
+
+		/* status phase */
+		sl811_write(SL811_PIDEP_A,
+			    PIDEP(!dir_in ? USB_PID_IN : USB_PID_OUT, ep));
+		usb_settoggle(dev, ep, !usb_pipeout(pipe), 1);
+		if (sl811_send_packet(dev,
+				      !dir_in ? usb_rcvctrlpipe(dev, ep) :
+				      usb_sndctrlpipe(dev, ep),
+				      0, 0) < 0) {
+			PDEBUG(0, "status phase failed!\n");
+			dev->status = -1;
+		}
+	} else {
+		PDEBUG(0, "setup phase failed!\n");
+		dev->status = -1;
+	}
+
+	dev->act_len = done;
+
+	return done;
+}
+
+int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
+		   int len, int interval)
+{
+	PDEBUG(0, "dev = %p pipe = %#lx buf = %p size = %d int = %d\n", dev, pipe,
+	       buffer, len, interval);
+	return -1;
+}
+
+/*
+ * SL811 Virtual Root Hub
+ */
+
+/* Device descriptor */
+static __u8 sl811_rh_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; */
+	0x02,	    /*	__u8  iProduct; */
+	0x01,	    /*	__u8  iSerialNumber; */
+	0x01	    /*	__u8  bNumConfigurations; */
+};
+
+/* Configuration descriptor */
+static __u8 sl811_rh_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 */
+	0x08,	    /*	__u16 ep_wMaxPacketSize; */
+	0x00,
+	0xff	    /*	__u8  ep_bInterval; 255 ms */
+};
+
+/* root hub class descriptor*/
+static __u8 sl811_rh_hub_des[] =
+{
+	0x09,			/*  __u8  bLength; */
+	0x29,			/*  __u8  bDescriptorType; Hub-descriptor */
+	0x01,			/*  __u8  bNbrPorts; */
+	0x00,			/* __u16  wHubCharacteristics; */
+	0x00,
+	0x50,			/*  __u8  bPwrOn2pwrGood; 2ms */
+	0x00,			/*  __u8  bHubContrCurrent; 0 mA */
+	0xfc,			/*  __u8  DeviceRemovable; *** 7 Ports max *** */
+	0xff			/*  __u8  PortPwrCtrlMask; *** 7 ports max *** */
+};
+
+/*
+ * helper routine for returning string descriptors in UTF-16LE
+ * input can actually be ISO-8859-1; ASCII is its 7-bit subset
+ */
+static int ascii2utf (char *s, u8 *utf, int utfmax)
+{
+	int retval;
+
+	for (retval = 0; *s && utfmax > 1; utfmax -= 2, retval += 2) {
+		*utf++ = *s++;
+		*utf++ = 0;
+	}
+	return retval;
+}
+
+/*
+ * root_hub_string is used by each host controller's root hub code,
+ * so that they're identified consistently throughout the system.
+ */
+static int usb_root_hub_string (int id, int serial, char *type, __u8 *data, int len)
+{
+	char buf [30];
+
+	/* assert (len > (2 * (sizeof (buf) + 1)));
+	   assert (strlen (type) <= 8);*/
+
+	/* language ids */
+	if (id == 0) {
+		*data++ = 4; *data++ = 3;	/* 4 bytes data */
+		*data++ = 0; *data++ = 0;	/* some language id */
+		return 4;
+
+	/* serial number */
+	} else if (id == 1) {
+		sprintf (buf, "%#x", serial);
+
+	/* product description */
+	} else if (id == 2) {
+		sprintf (buf, "USB %s Root Hub", type);
+
+	/* id 3 == vendor description */
+
+	/* unsupported IDs --> "stall" */
+	} else
+	    return 0;
+
+	ascii2utf (buf, data + 2, len - 2);
+	data [0] = 2 + strlen(buf) * 2;
+	data [1] = 3;
+	return data [0];
+}
+
+/* helper macro */
+#define OK(x)	len = (x); break
+
+/*
+ * This function handles all USB request to the the virtual root hub
+ */
+static int sl811_rh_submit_urb(struct usb_device *usb_dev, unsigned long pipe,
+			       void *data, int buf_len, struct devrequest *cmd)
+{
+	__u8 data_buf[16];
+	__u8 *bufp = data_buf;
+	int len = 0;
+	int status = 0;
+
+	__u16 bmRType_bReq;
+	__u16 wValue;
+	__u16 wIndex;
+	__u16 wLength;
+
+	if (usb_pipeint(pipe)) {
+		PDEBUG(0, "interrupt transfer unimplemented!\n");
+		return 0;
+	}
+
+	bmRType_bReq  = cmd->requesttype | (cmd->request << 8);
+	wValue	      = le16_to_cpu (cmd->value);
+	wIndex	      = le16_to_cpu (cmd->index);
+	wLength	      = le16_to_cpu (cmd->length);
+
+	PDEBUG(5, "submit rh urb, req = %d(%x) val = %#x index = %#x len=%d\n",
+	       bmRType_bReq, bmRType_bReq, wValue, wIndex, wLength);
+
+	/* Request Destination:
+		   without flags: Device,
+		   USB_RECIP_INTERFACE: interface,
+		   USB_RECIP_ENDPOINT: endpoint,
+		   USB_TYPE_CLASS means HUB here,
+		   USB_RECIP_OTHER | USB_TYPE_CLASS  almost ever means HUB_PORT here
+	*/
+	switch (bmRType_bReq) {
+	case RH_GET_STATUS:
+		*(__u16 *)bufp = cpu_to_le16(1);
+		OK(2);
+
+	case RH_GET_STATUS | USB_RECIP_INTERFACE:
+		*(__u16 *)bufp = cpu_to_le16(0);
+		OK(2);
+
+	case RH_GET_STATUS | USB_RECIP_ENDPOINT:
+		*(__u16 *)bufp = cpu_to_le16(0);
+		OK(2);
+
+	case RH_GET_STATUS | USB_TYPE_CLASS:
+		*(__u32 *)bufp = cpu_to_le32(0);
+		OK(4);
+
+	case RH_GET_STATUS | USB_RECIP_OTHER | USB_TYPE_CLASS:
+		*(__u32 *)bufp = cpu_to_le32(rh_status.wPortChange<<16 | rh_status.wPortStatus);
+		OK(4);
+
+	case RH_CLEAR_FEATURE | USB_RECIP_ENDPOINT:
+		switch (wValue) {
+		case 1:
+			OK(0);
+		}
+		break;
+
+	case RH_CLEAR_FEATURE | USB_TYPE_CLASS:
+		switch (wValue) {
+		case C_HUB_LOCAL_POWER:
+			OK(0);
+
+		case C_HUB_OVER_CURRENT:
+			OK(0);
+		}
+		break;
+
+	case RH_CLEAR_FEATURE | USB_RECIP_OTHER | USB_TYPE_CLASS:
+		switch (wValue) {
+		case USB_PORT_FEAT_ENABLE:
+			rh_status.wPortStatus &= ~USB_PORT_STAT_ENABLE;
+			OK(0);
+
+		case USB_PORT_FEAT_SUSPEND:
+			rh_status.wPortStatus &= ~USB_PORT_STAT_SUSPEND;
+			OK(0);
+
+		case USB_PORT_FEAT_POWER:
+			rh_status.wPortStatus &= ~USB_PORT_STAT_POWER;
+			OK(0);
+
+		case USB_PORT_FEAT_C_CONNECTION:
+			rh_status.wPortChange &= ~USB_PORT_STAT_C_CONNECTION;
+			OK(0);
+
+		case USB_PORT_FEAT_C_ENABLE:
+			rh_status.wPortChange &= ~USB_PORT_STAT_C_ENABLE;
+			OK(0);
+
+		case USB_PORT_FEAT_C_SUSPEND:
+			rh_status.wPortChange &= ~USB_PORT_STAT_C_SUSPEND;
+			OK(0);
+
+		case USB_PORT_FEAT_C_OVER_CURRENT:
+			rh_status.wPortChange &= ~USB_PORT_STAT_C_OVERCURRENT;
+			OK(0);
+
+		case USB_PORT_FEAT_C_RESET:
+			rh_status.wPortChange &= ~USB_PORT_STAT_C_RESET;
+			OK(0);
+		}
+		break;
+
+	case RH_SET_FEATURE | USB_RECIP_OTHER | USB_TYPE_CLASS:
+		switch (wValue) {
+		case USB_PORT_FEAT_SUSPEND:
+			rh_status.wPortStatus |= USB_PORT_STAT_SUSPEND;
+			OK(0);
+
+		case USB_PORT_FEAT_RESET:
+			rh_status.wPortStatus |= USB_PORT_STAT_RESET;
+			rh_status.wPortChange = 0;
+			rh_status.wPortChange |= USB_PORT_STAT_C_RESET;
+			rh_status.wPortStatus &= ~USB_PORT_STAT_RESET;
+			rh_status.wPortStatus |= USB_PORT_STAT_ENABLE;
+			OK(0);
+
+		case USB_PORT_FEAT_POWER:
+			rh_status.wPortStatus |= USB_PORT_STAT_POWER;
+			OK(0);
+
+		case USB_PORT_FEAT_ENABLE:
+			rh_status.wPortStatus |= USB_PORT_STAT_ENABLE;
+			OK(0);
+		}
+		break;
+
+	case RH_SET_ADDRESS:
+		root_hub_devnum = wValue;
+		OK(0);
+
+	case RH_GET_DESCRIPTOR:
+		switch ((wValue & 0xff00) >> 8) {
+		case USB_DT_DEVICE:
+			len = sizeof(sl811_rh_dev_des);
+			bufp = sl811_rh_dev_des;
+			OK(len);
+
+		case USB_DT_CONFIG:
+			len = sizeof(sl811_rh_config_des);
+			bufp = sl811_rh_config_des;
+			OK(len);
+
+		case USB_DT_STRING:
+			len = usb_root_hub_string(wValue & 0xff, (int)(long)0,	"SL811HS", data, wLength);
+			if (len > 0) {
+				bufp = data;
+				OK(len);
+			}
+
+		default:
+			status = -32;
+		}
+		break;
+
+	case RH_GET_DESCRIPTOR | USB_TYPE_CLASS:
+		len = sizeof(sl811_rh_hub_des);
+		bufp = sl811_rh_hub_des;
+		OK(len);
+
+	case RH_GET_CONFIGURATION:
+		bufp[0] = 0x01;
+		OK(1);
+
+	case RH_SET_CONFIGURATION:
+		OK(0);
+
+	default:
+		PDEBUG(1, "unsupported root hub command\n");
+		status = -32;
+	}
+
+	len = min(len, buf_len);
+	if (data != bufp)
+		memcpy(data, bufp, len);
+
+	PDEBUG(5, "len = %d, status = %d\n", len, status);
+
+	usb_dev->status = status;
+	usb_dev->act_len = len;
+
+	return status == 0 ? len : status;
+}
+
+#endif	/* CONFIG_USB_SL811HS */