296 static u32 item_udata(struct hid_item *item)  in item_udata()  argument
298 	switch (item->size) {  in item_udata()
299 	case 1: return item->data.u8;  in item_udata()
300 	case 2: return item->data.u16;  in item_udata()
301 	case 4: return item->data.u32;  in item_udata()
306 static s32 item_sdata(struct hid_item *item)  in item_sdata()  argument
308 	switch (item->size) {  in item_sdata()
309 	case 1: return item->data.s8;  in item_sdata()
310 	case 2: return item->data.s16;  in item_sdata()
311 	case 4: return item->data.s32;  in item_sdata()
320 static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)  in hid_parser_global()  argument
323 	switch (item->tag) {  in hid_parser_global()
347 		parser->global.usage_page = item_udata(item);  in hid_parser_global()
351 		parser->global.logical_minimum = item_sdata(item);  in hid_parser_global()
356 			parser->global.logical_maximum = item_sdata(item);  in hid_parser_global()
358 			parser->global.logical_maximum = item_udata(item);  in hid_parser_global()
362 		parser->global.physical_minimum = item_sdata(item);  in hid_parser_global()
367 			parser->global.physical_maximum = item_sdata(item);  in hid_parser_global()
369 			parser->global.physical_maximum = item_udata(item);  in hid_parser_global()
377 		raw_value = item_sdata(item);  in hid_parser_global()
385 		parser->global.unit = item_udata(item);  in hid_parser_global()
389 		parser->global.report_size = item_udata(item);  in hid_parser_global()
398 		parser->global.report_count = item_udata(item);  in hid_parser_global()
407 		parser->global.report_id = item_udata(item);  in hid_parser_global()
417 		hid_err(parser->device, "unknown global tag 0x%x\n", item->tag);  in hid_parser_global()
426 static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)  in hid_parser_local()  argument
431 	data = item_udata(item);  in hid_parser_local()
433 	switch (item->tag) {  in hid_parser_local()
465 		if (item->size <= 2)  in hid_parser_local()
477 		if (item->size <= 2)  in hid_parser_local()
490 		if (item->size <= 2)  in hid_parser_local()
502 		dbg_hid("unknown local item tag 0x%x\n", item->tag);  in hid_parser_local()
512 static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)  in hid_parser_main()  argument
517 	data = item_udata(item);  in hid_parser_main()
519 	switch (item->tag) {  in hid_parser_main()
536 		hid_err(parser->device, "unknown main item tag 0x%x\n", item->tag);  in hid_parser_main()
549 static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)  in hid_parser_reserved()  argument
551 	dbg_hid("reserved item type, tag 0x%x\n", item->tag);  in hid_parser_reserved()
621 static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)  in fetch_item()  argument
630 	item->type = (b >> 2) & 3;  in fetch_item()
631 	item->tag  = (b >> 4) & 15;  in fetch_item()
633 	if (item->tag == HID_ITEM_TAG_LONG) {  in fetch_item()
635 		item->format = HID_ITEM_FORMAT_LONG;  in fetch_item()
640 		item->size = *start++;  in fetch_item()
641 		item->tag  = *start++;  in fetch_item()
643 		if ((end - start) < item->size)  in fetch_item()
646 		item->data.longdata = start;  in fetch_item()
647 		start += item->size;  in fetch_item()
651 	item->format = HID_ITEM_FORMAT_SHORT;  in fetch_item()
652 	item->size = b & 3;  in fetch_item()
654 	switch (item->size) {  in fetch_item()
661 		item->data.u8 = *start++;  in fetch_item()
667 		item->data.u16 = get_unaligned_le16(start);  in fetch_item()
672 		item->size++;  in fetch_item()
675 		item->data.u32 = get_unaligned_le32(start);  in fetch_item()
722 static int hid_scan_main(struct hid_parser *parser, struct hid_item *item)  in hid_scan_main()  argument
727 	data = item_udata(item);  in hid_scan_main()
729 	switch (item->tag) {  in hid_scan_main()
764 	struct hid_item item;  in hid_scan_report()  local
768 				      struct hid_item *item) = {  in hid_scan_report()
787 	while ((start = fetch_item(start, end, &item)) != NULL)  in hid_scan_report()
788 		dispatch_type[item.type](parser, &item);  in hid_scan_report()
923 	struct hid_item item;  in hid_open_report()  local
930 				      struct hid_item *item) = {  in hid_open_report()
981 	while ((start = fetch_item(start, end, &item)) != NULL) {  in hid_open_report()
983 		if (item.format != HID_ITEM_FORMAT_SHORT) {  in hid_open_report()
988 		if (dispatch_type[item.type](parser, &item)) {  in hid_open_report()
990 				item.format, (unsigned)item.size,  in hid_open_report()
991 				(unsigned)item.type, (unsigned)item.tag);  in hid_open_report()