return 1;
#endif
}
-
-#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;
-} __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 = le16_to_cpu(
- (unsigned short *)start);
- start += 2;
- return item->size;
- }
- case 3:
- item->size++;
- if ((end - start) >= 4) {
- item->data.u32 = le32_to_cpu(
- (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 = le16_to_cpu(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]);
- le16_to_cpus(&usb_kbd_hid_desc.bcdHID);
- le16_to_cpus(&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;
- index = usb_get_class_descriptor(dev, 0, USB_DT_REPORT, 0, &buffer[0],
- len);
- if (index < 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
projects / platform / kernel / u-boot.git / commitdiff