Initial revision

1 files changed, 734 insertions, 0 deletions

diff --git a/common/usb_kbd.c b/common/usb_kbd.c
new file mode 100644
index 0000000..ad7e610
--- /dev/null
+++ b/common/usb_kbd.c
@@ -0,0 +1,734 @@
+/*
+ * (C) Copyright 2001
+ * Denis Peter, MPL AG Switzerland
+ *
+ * Part of this source has been derived from the Linux USB
+ * project.
+ *
+ * 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>
+#include <devices.h>
+
+#ifdef CONFIG_USB_KEYBOARD
+
+#include <usb.h>
+
+#undef USB_KBD_DEBUG
+/*
+ * if overwrite_console returns 1, the stdin, stderr and stdout
+ * are switched to the serial port, else the settings in the
+ * environment are used
+ */
+#ifdef CFG_CONSOLE_OVERWRITE_ROUTINE
+extern int overwrite_console (void);
+#else
+int overwrite_console (void)
+{
+	return (0);
+}
+#endif
+
+#ifdef	USB_KBD_DEBUG
+#define	USB_KBD_PRINTF(fmt,args...)	printf (fmt ,##args)
+#else
+#define USB_KBD_PRINTF(fmt,args...)
+#endif
+
+
+#define REPEAT_RATE  40/4 /* 40msec -> 25cps */
+#define REPEAT_DELAY 10 /* 10 x REAPEAT_RATE = 400msec */
+
+#define NUM_LOCK	0x53
+#define CAPS_LOCK 0x39
+#define SCROLL_LOCK 0x47
+
+
+/* Modifier bits */
+#define LEFT_CNTR		0
+#define LEFT_SHIFT	1
+#define LEFT_ALT		2
+#define LEFT_GUI		3
+#define RIGHT_CNTR	4
+#define RIGHT_SHIFT	5
+#define RIGHT_ALT		6
+#define RIGHT_GUI		7
+
+#define USB_KBD_BUFFER_LEN 0x20  /* size of the keyboardbuffer */
+
+static volatile char usb_kbd_buffer[USB_KBD_BUFFER_LEN];
+static volatile int usb_in_pointer = 0;
+static volatile int usb_out_pointer = 0;
+
+unsigned char new[8];
+unsigned char old[8];
+int repeat_delay;
+#define DEVNAME "usbkbd"
+static unsigned char num_lock = 0;
+static unsigned char caps_lock = 0;
+static unsigned char scroll_lock = 0;
+
+static unsigned char leds __attribute__ ((aligned (0x4)));
+
+static unsigned char usb_kbd_numkey[] = {
+	 '1', '2', '3', '4', '5', '6', '7', '8', '9', '0','\r',0x1b,'\b','\t',' ', '-',
+	 '=', '[', ']','\\', '#', ';', '\'', '`', ',', '.', '/'
+};
+static unsigned char usb_kbd_numkey_shifted[] = {
+	 '!', '@', '#', '$', '%', '^', '&', '*', '(', ')','\r',0x1b,'\b','\t',' ', '_',
+	 '+', '{', '}', '|', '~', ':', '"', '~', '<', '>', '?'
+};
+
+/******************************************************************
+ * Queue handling
+ ******************************************************************/
+/* puts character in the queue and sets up the in and out pointer */
+static void usb_kbd_put_queue(char data)
+{
+	if((usb_in_pointer+1)==USB_KBD_BUFFER_LEN) {
+		if(usb_out_pointer==0) {
+			return; /* buffer full */
+		} else{
+			usb_in_pointer=0;
+		}
+	} else {
+		if((usb_in_pointer+1)==usb_out_pointer)
+			return; /* buffer full */
+		usb_in_pointer++;
+	}
+	usb_kbd_buffer[usb_in_pointer]=data;
+	return;
+}
+
+/* test if a character is in the queue */
+static int usb_kbd_testc(void)
+{
+	if(usb_in_pointer==usb_out_pointer)
+		return(0); /* no data */
+	else
+		return(1);
+}
+/* gets the character from the queue */
+static int usb_kbd_getc(void)
+{
+	char c;
+	while(usb_in_pointer==usb_out_pointer);
+	if((usb_out_pointer+1)==USB_KBD_BUFFER_LEN)
+		usb_out_pointer=0;
+	else
+		usb_out_pointer++;
+	c=usb_kbd_buffer[usb_out_pointer];
+	return (int)c;
+
+}
+
+/* forward decleration */
+static int usb_kbd_probe(struct usb_device *dev, unsigned int ifnum);
+
+/* search for keyboard and register it if found */
+int drv_usb_kbd_init(void)
+{
+	int error,i,index;
+	device_t usb_kbd_dev,*old_dev;
+	struct usb_device *dev;
+	char *stdinname  = getenv ("stdin");
+
+	usb_in_pointer=0;
+	usb_out_pointer=0;
+	/* scan all USB Devices */
+	for(i=0;i<USB_MAX_DEVICE;i++) {
+		dev=usb_get_dev_index(i); /* get device */
+		if(dev->devnum!=-1) {
+			if(usb_kbd_probe(dev,0)==1) { /* Ok, we found a keyboard */
+				/* check, if it is already registered */
+				USB_KBD_PRINTF("USB KBD found set up device.\n");
+				for (index=1; index<=ListNumItems(devlist); index++) {
+					old_dev = ListGetPtrToItem(devlist, index);
+					if(strcmp(old_dev->name,DEVNAME)==0) {
+						/* ok, already registered, just return ok */
+						USB_KBD_PRINTF("USB KBD is already registered.\n");
+						return 1;
+					}
+				}
+				/* register the keyboard */
+				USB_KBD_PRINTF("USB KBD register.\n");
+				memset (&usb_kbd_dev, 0, sizeof(device_t));
+				strcpy(usb_kbd_dev.name, DEVNAME);
+				usb_kbd_dev.flags =  DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM;
+				usb_kbd_dev.putc = NULL;
+				usb_kbd_dev.puts = NULL;
+				usb_kbd_dev.getc = usb_kbd_getc;
+				usb_kbd_dev.tstc = usb_kbd_testc;
+				error = device_register (&usb_kbd_dev);
+				if(error==0) {
+					/* check if this is the standard input device */
+					if(strcmp(stdinname,DEVNAME)==0) {
+						/* reassign the console */
+						if(overwrite_console()) {
+							return 1;
+						}
+						error=console_assign(stdin,DEVNAME);
+						if(error==0)
+							return 1;
+						else
+							return error;
+					}
+					return 1;
+				}
+				return error;
+			}
+		}
+	}
+	/* no USB Keyboard found */
+	return -1;
+}
+
+
+/* deregistering the keyboard */
+int usb_kbd_deregister(void)
+{
+	return device_deregister(DEVNAME);
+}
+
+/**************************************************************************
+ * Low Level drivers
+ */
+
+/* set the LEDs. Since this is used in the irq routine, the control job
+   is issued with a timeout of 0. This means, that the job is queued without
+   waiting for job completion */
+
+static void usb_kbd_setled(struct usb_device *dev)
+{
+	struct usb_interface_descriptor *iface;
+	iface = &dev->config.if_desc[0];
+	leds=0;
+	if(scroll_lock!=0)
+		leds|=1;
+	leds<<=1;
+	if(caps_lock!=0)
+		leds|=1;
+	leds<<=1;
+	if(num_lock!=0)
+		leds|=1;
+	usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+		USB_REQ_SET_REPORT, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+ 		0x200, iface->bInterfaceNumber,(void *)&leds, 1, 0);
+
+}
+
+
+#define CAPITAL_MASK 0x20
+/* Translate the scancode in ASCII */
+static int usb_kbd_translate(unsigned char scancode,unsigned char modifier,int pressed)
+{
+	unsigned char keycode;
+
+	if(pressed==0) {
+		/* key released */
+ 		repeat_delay=0;
+		return 0;
+	}
+	if(pressed==2) {
+		repeat_delay++;
+		if(repeat_delay<REPEAT_DELAY)
+			return 0;
+		repeat_delay=REPEAT_DELAY;
+	}
+	keycode=0;
+	if((scancode>3) && (scancode<0x1d)) { /* alpha numeric values */
+		keycode=scancode-4 + 0x61;
+		if(caps_lock)
+			keycode&=~CAPITAL_MASK; /* switch to capital Letters */
+		if(((modifier&(1<<LEFT_SHIFT))!=0)||((modifier&(1<<RIGHT_SHIFT))!=0)) {
+			if(keycode & CAPITAL_MASK)
+				keycode&=~CAPITAL_MASK; /* switch to capital Letters */
+			else
+				keycode|=CAPITAL_MASK; /* switch to non capital Letters */
+		}
+	}
+	if((scancode>0x1d) && (scancode<0x3A)) {
+		if(((modifier&(1<<LEFT_SHIFT))!=0)||((modifier&(1<<RIGHT_SHIFT))!=0))  /* shifted */
+			keycode=usb_kbd_numkey_shifted[scancode-0x1e];
+		else /* non shifted */
+			keycode=usb_kbd_numkey[scancode-0x1e];
+	}
+	if(pressed==1) {
+		if(scancode==NUM_LOCK) {
+			num_lock=~num_lock;
+			return 1;
+		}
+		if(scancode==CAPS_LOCK) {
+			caps_lock=~caps_lock;
+			return 1;
+		}
+		if(scancode==SCROLL_LOCK) {
+			scroll_lock=~scroll_lock;
+			return 1;
+		}
+	}
+	if(keycode!=0) {
+		USB_KBD_PRINTF("%c",keycode);
+		usb_kbd_put_queue(keycode);
+	}
+	return 0;
+}
+
+/* Interrupt service routine */
+static int usb_kbd_irq(struct usb_device *dev)
+{
+	int i,res;
+
+	if((dev->irq_status!=0)||(dev->irq_act_len!=8))
+	{
+		USB_KBD_PRINTF("usb_keyboard Error %lX, len %d\n",dev->irq_status,dev->irq_act_len);
+		return 1;
+	}
+	res=0;
+	for (i = 2; i < 8; i++) {
+		if (old[i] > 3 && memscan(&new[2], old[i], 6) == &new[8]) {
+			res|=usb_kbd_translate(old[i],new[0],0);
+		}
+		if (new[i] > 3 && memscan(&old[2], new[i], 6) == &old[8]) {
+			res|=usb_kbd_translate(new[i],new[0],1);
+		}
+	}
+	if((new[2]>3) && (old[2]==new[2])) /* still pressed */
+		res|=usb_kbd_translate(new[2],new[0],2);
+	if(res==1)
+		usb_kbd_setled(dev);
+	memcpy(&old[0],&new[0], 8);
+	return 1; /* install IRQ Handler again */
+}
+
+/* probes the USB device dev for keyboard type */
+static int usb_kbd_probe(struct usb_device *dev, unsigned int ifnum)
+{
+	struct usb_interface_descriptor *iface;
+	struct usb_endpoint_descriptor *ep;
+	int pipe,maxp;
+
+	if (dev->descriptor.bNumConfigurations != 1) return 0;
+	iface = &dev->config.if_desc[ifnum];
+
+	if (iface->bInterfaceClass != 3) return 0;
+	if (iface->bInterfaceSubClass != 1) return 0;
+	if (iface->bInterfaceProtocol != 1) return 0;
+	if (iface->bNumEndpoints != 1) return 0;
+
+	ep = &iface->ep_desc[0];
+
+	if (!(ep->bEndpointAddress & 0x80)) return 0;
+	if ((ep->bmAttributes & 3) != 3) return 0;
+	USB_KBD_PRINTF("USB KBD found set protocol...\n");
+	/* ok, we found a USB Keyboard, install it */
+	/* usb_kbd_get_hid_desc(dev); */
+	usb_set_protocol(dev, iface->bInterfaceNumber, 0);
+	USB_KBD_PRINTF("USB KBD found set idle...\n");
+	usb_set_idle(dev, iface->bInterfaceNumber, REPEAT_RATE, 0);
+	memset(&new[0], 0, 8);
+	memset(&old[0], 0, 8);
+	repeat_delay=0;
+	pipe = usb_rcvintpipe(dev, ep->bEndpointAddress);
+	maxp = usb_maxpacket(dev, pipe);
+	dev->irq_handle=usb_kbd_irq;
+	USB_KBD_PRINTF("USB KBD enable interrupt pipe...\n");
+	usb_submit_int_msg(dev,pipe,&new[0], maxp > 8 ? 8 : maxp,ep->bInterval);
+	return 1;
+}
+
+
+#if 0
+struct usb_hid_descriptor {
+	unsigned char  bLength;
+	unsigned char  bDescriptorType; /* 0x21 for HID */
+	unsigned short bcdHID; /* release number */
+	unsigned char  bCountryCode;
+	unsigned char  bNumDescriptors;
+	unsigned char  bReportDescriptorType;
+	unsigned short wDescriptorLength;
+} __attribute__ ((packed));
+
+/*
+ * We parse each description item into this structure. Short items data
+ * values are expanded to 32-bit signed int, long items contain a pointer
+ * into the data area.
+ */
+
+struct hid_item {
+	unsigned char format;
+	unsigned char size;
+	unsigned char type;
+	unsigned char tag;
+	union {
+	    unsigned char   u8;
+	    char            s8;
+	    unsigned short  u16;
+	    short           s16;
+	    unsigned long   u32;
+	    long            s32;
+	    unsigned char  *longdata;
+	} data;
+};
+
+/*
+ * HID report item format
+ */
+
+#define HID_ITEM_FORMAT_SHORT	0
+#define HID_ITEM_FORMAT_LONG	1
+
+/*
+ * Special tag indicating long items
+ */
+
+#define HID_ITEM_TAG_LONG	15
+
+
+
+static struct usb_hid_descriptor usb_kbd_hid_desc;
+
+void usb_kbd_display_hid(struct usb_hid_descriptor *hid)
+{
+	printf("USB_HID_DESC:\n");
+	printf("  bLenght               0x%x\n",hid->bLength);
+	printf("  bcdHID                0x%x\n",hid->bcdHID);
+	printf("  bCountryCode          %d\n",hid->bCountryCode);
+	printf("  bNumDescriptors       0x%x\n",hid->bNumDescriptors);
+	printf("  bReportDescriptorType 0x%x\n",hid->bReportDescriptorType);
+	printf("  wDescriptorLength     0x%x\n",hid->wDescriptorLength);
+}
+
+
+/*
+ * Fetch a report description item from the data stream. We support long
+ * items, though they are not used yet.
+ */
+
+static int fetch_item(unsigned char *start,unsigned char *end, struct hid_item *item)
+{
+	if((end - start) > 0) {
+		unsigned char b = *start++;
+		item->type = (b >> 2) & 3;
+		item->tag  = (b >> 4) & 15;
+		if (item->tag == HID_ITEM_TAG_LONG) {
+			item->format = HID_ITEM_FORMAT_LONG;
+			if ((end - start) >= 2) {
+				item->size = *start++;
+				item->tag  = *start++;
+				if ((end - start) >= item->size) {
+					item->data.longdata = start;
+					start += item->size;
+					return item->size;
+				}
+			}
+		} else {
+			item->format = HID_ITEM_FORMAT_SHORT;
+			item->size = b & 3;
+			switch (item->size) {
+				case 0:
+					return item->size;
+				case 1:
+					if ((end - start) >= 1) {
+						item->data.u8 = *start++;
+						return item->size;
+					}
+					break;
+				case 2:
+					if ((end - start) >= 2) {
+						item->data.u16 = swap_16((unsigned short *)start);
+						start+=2;
+						return item->size;
+					}
+				case 3:
+					item->size++;
+					if ((end - start) >= 4) {
+						item->data.u32 = swap_32((unsigned long *)start);
+						start+=4;
+						return item->size;
+					}
+			}
+		}
+	}
+	return -1;
+}
+
+/*
+ * HID report descriptor item type (prefix bit 2,3)
+ */
+
+#define HID_ITEM_TYPE_MAIN		0
+#define HID_ITEM_TYPE_GLOBAL		1
+#define HID_ITEM_TYPE_LOCAL		2
+#define HID_ITEM_TYPE_RESERVED		3
+/*
+ * HID report descriptor main item tags
+ */
+
+#define HID_MAIN_ITEM_TAG_INPUT			8
+#define HID_MAIN_ITEM_TAG_OUTPUT		9
+#define HID_MAIN_ITEM_TAG_FEATURE		11
+#define HID_MAIN_ITEM_TAG_BEGIN_COLLECTION	10
+#define HID_MAIN_ITEM_TAG_END_COLLECTION	12
+/*
+ * HID report descriptor main item contents
+ */
+
+#define HID_MAIN_ITEM_CONSTANT		0x001
+#define HID_MAIN_ITEM_VARIABLE		0x002
+#define HID_MAIN_ITEM_RELATIVE		0x004
+#define HID_MAIN_ITEM_WRAP		0x008
+#define HID_MAIN_ITEM_NONLINEAR		0x010
+#define HID_MAIN_ITEM_NO_PREFERRED	0x020
+#define HID_MAIN_ITEM_NULL_STATE	0x040
+#define HID_MAIN_ITEM_VOLATILE		0x080
+#define HID_MAIN_ITEM_BUFFERED_BYTE	0x100
+
+/*
+ * HID report descriptor collection item types
+ */
+
+#define HID_COLLECTION_PHYSICAL		0
+#define HID_COLLECTION_APPLICATION	1
+#define HID_COLLECTION_LOGICAL		2
+/*
+ * HID report descriptor global item tags
+ */
+
+#define HID_GLOBAL_ITEM_TAG_USAGE_PAGE		0
+#define HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM	1
+#define HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM	2
+#define HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM	3
+#define HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM	4
+#define HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT	5
+#define HID_GLOBAL_ITEM_TAG_UNIT		6
+#define HID_GLOBAL_ITEM_TAG_REPORT_SIZE		7
+#define HID_GLOBAL_ITEM_TAG_REPORT_ID		8
+#define HID_GLOBAL_ITEM_TAG_REPORT_COUNT	9
+#define HID_GLOBAL_ITEM_TAG_PUSH		10
+#define HID_GLOBAL_ITEM_TAG_POP			11
+
+/*
+ * HID report descriptor local item tags
+ */
+
+#define HID_LOCAL_ITEM_TAG_USAGE		0
+#define HID_LOCAL_ITEM_TAG_USAGE_MINIMUM	1
+#define HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM	2
+#define HID_LOCAL_ITEM_TAG_DESIGNATOR_INDEX	3
+#define HID_LOCAL_ITEM_TAG_DESIGNATOR_MINIMUM	4
+#define HID_LOCAL_ITEM_TAG_DESIGNATOR_MAXIMUM	5
+#define HID_LOCAL_ITEM_TAG_STRING_INDEX		7
+#define HID_LOCAL_ITEM_TAG_STRING_MINIMUM	8
+#define HID_LOCAL_ITEM_TAG_STRING_MAXIMUM	9
+#define HID_LOCAL_ITEM_TAG_DELIMITER		10
+
+
+
+static void usb_kbd_show_item(struct hid_item *item)
+{
+	switch(item->type) {
+		case HID_ITEM_TYPE_MAIN:
+			switch(item->tag) {
+				case HID_MAIN_ITEM_TAG_INPUT:
+					printf("Main Input");
+					break;
+				case HID_MAIN_ITEM_TAG_OUTPUT:
+					printf("Main Output");
+					break;
+				case HID_MAIN_ITEM_TAG_FEATURE:
+					printf("Main Feature");
+					break;
+				case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
+					printf("Main Begin Collection");
+					break;
+				case HID_MAIN_ITEM_TAG_END_COLLECTION:
+					printf("Main End Collection");
+					break;
+				default:
+					printf("Main reserved %d",item->tag);
+					break;
+			}
+			break;
+		case HID_ITEM_TYPE_GLOBAL:
+			switch(item->tag) {
+				case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
+					printf("- Global Usage Page");
+					break;
+				case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
+					printf("- Global Logical Minimum");
+					break;
+				case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
+					printf("- Global Logical Maximum");
+					break;
+				case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
+					printf("- Global physical Minimum");
+					break;
+				case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
+					printf("- Global physical Maximum");
+					break;
+				case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
+					printf("- Global Unit Exponent");
+					break;
+				case HID_GLOBAL_ITEM_TAG_UNIT:
+					printf("- Global Unit");
+					break;
+				case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
+					printf("- Global Report Size");
+					break;
+				case HID_GLOBAL_ITEM_TAG_REPORT_ID:
+					printf("- Global Report ID");
+					break;
+				case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
+					printf("- Global Report Count");
+					break;
+				case HID_GLOBAL_ITEM_TAG_PUSH:
+					printf("- Global Push");
+					break;
+				case HID_GLOBAL_ITEM_TAG_POP:
+					printf("- Global Pop");
+					break;
+				default:
+					printf("- Global reserved %d",item->tag);
+					break;
+			}
+			break;
+		case HID_ITEM_TYPE_LOCAL:
+			switch(item->tag) {
+				case HID_LOCAL_ITEM_TAG_USAGE:
+					printf("-- Local Usage");
+					break;
+				case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
+					printf("-- Local Usage Minimum");
+					break;
+				case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
+					printf("-- Local Usage Maximum");
+					break;
+				case HID_LOCAL_ITEM_TAG_DESIGNATOR_INDEX:
+					printf("-- Local Designator Index");
+					break;
+				case HID_LOCAL_ITEM_TAG_DESIGNATOR_MINIMUM:
+					printf("-- Local Designator Minimum");
+					break;
+				case HID_LOCAL_ITEM_TAG_DESIGNATOR_MAXIMUM:
+					printf("-- Local Designator Maximum");
+					break;
+				case HID_LOCAL_ITEM_TAG_STRING_INDEX:
+					printf("-- Local String Index");
+					break;
+				case HID_LOCAL_ITEM_TAG_STRING_MINIMUM:
+					printf("-- Local String Minimum");
+					break;
+				case HID_LOCAL_ITEM_TAG_STRING_MAXIMUM:
+					printf("-- Local String Maximum");
+					break;
+				case HID_LOCAL_ITEM_TAG_DELIMITER:
+					printf("-- Local Delimiter");
+					break;
+				default:
+					printf("-- Local reserved %d",item->tag);
+					break;
+			}
+			break;
+		default:
+			printf("--- reserved %d",item->type);
+			break;
+	}
+	switch(item->size) {
+		case 1:
+			printf("  %d",item->data.u8);
+			break;
+		case 2:
+			printf("  %d",item->data.u16);
+			break;
+		case 4:
+			printf("  %ld",item->data.u32);
+			break;
+	}
+	printf("\n");
+}
+
+
+
+static int usb_kbd_get_hid_desc(struct usb_device *dev)
+{
+	unsigned char buffer[256];
+	struct usb_descriptor_header *head;
+	struct usb_config_descriptor *config;
+	int index,len,i;
+	unsigned char *start, *end;
+	struct hid_item item;
+
+	if(usb_get_configuration_no(dev,&buffer[0],0)==-1)
+		return -1;
+	head =(struct usb_descriptor_header *)&buffer[0];
+	if(head->bDescriptorType!=USB_DT_CONFIG) {
+		printf(" ERROR: NOT USB_CONFIG_DESC %x\n",head->bDescriptorType);
+		return -1;
+	}
+	index=head->bLength;
+	config=(struct usb_config_descriptor *)&buffer[0];
+	len=swap_16(config->wTotalLength);
+	/* Ok the first entry must be a configuration entry, now process the others */
+	head=(struct usb_descriptor_header *)&buffer[index];
+	while(index+1 < len) {
+		if(head->bDescriptorType==USB_DT_HID) {
+			printf("HID desc found\n");
+			memcpy(&usb_kbd_hid_desc,&buffer[index],buffer[index]);
+			usb_kbd_hid_desc.bcdHID=swap_16(usb_kbd_hid_desc.bcdHID);
+			usb_kbd_hid_desc.wDescriptorLength=swap_16(usb_kbd_hid_desc.wDescriptorLength);
+			usb_kbd_display_hid(&usb_kbd_hid_desc);
+			len=0;
+			break;
+		}
+		index+=head->bLength;
+		head=(struct usb_descriptor_header *)&buffer[index];
+	}
+	if(len>0)
+		return -1;
+	len=usb_kbd_hid_desc.wDescriptorLength;
+	if((index = usb_get_class_descriptor(dev, 0, USB_DT_REPORT, 0, &buffer[0], len)) < 0) {
+		printf("reading report descriptor failed\n");
+		return -1;
+	}
+	printf(" report descriptor (size %u, read %d)\n", len, index);
+	start=&buffer[0];
+	end=&buffer[len];
+	i=0;
+	do {
+		index=fetch_item(start,end,&item);
+		i+=index;
+		i++;
+		if(index>=0)
+			usb_kbd_show_item(&item);
+
+		start+=index;
+		start++;
+	} while(index>=0);
+
+}
+
+
+#endif
+
+#endif /* CONFIG_USB_KEYBOARD */
+
+/* eof */
+