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-rw-r--r--common/usb_kbd.c734
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 */
+
generated by cgit v1.1 at 2024-11-21 19:26:11 +0000