124 static int open_collection(struct hid_parser *parser, unsigned type)  in open_collection()  argument
130 	usage = parser->local.usage[0];  in open_collection()
132 	if (parser->collection_stack_ptr == parser->collection_stack_size) {  in open_collection()
134 		unsigned int new_size = parser->collection_stack_size +  in open_collection()
137 		collection_stack = krealloc(parser->collection_stack,  in open_collection()
143 		parser->collection_stack = collection_stack;  in open_collection()
144 		parser->collection_stack_size = new_size;  in open_collection()
147 	if (parser->device->maxcollection == parser->device->collection_size) {  in open_collection()
150 					    parser->device->collection_size,  in open_collection()
154 			hid_err(parser->device, "failed to reallocate collection array\n");  in open_collection()
157 		memcpy(collection, parser->device->collection,  in open_collection()
159 			parser->device->collection_size);  in open_collection()
160 		memset(collection + parser->device->collection_size, 0,  in open_collection()
162 			parser->device->collection_size);  in open_collection()
163 		kfree(parser->device->collection);  in open_collection()
164 		parser->device->collection = collection;  in open_collection()
165 		parser->device->collection_size *= 2;  in open_collection()
168 	parser->collection_stack[parser->collection_stack_ptr++] =  in open_collection()
169 		parser->device->maxcollection;  in open_collection()
171 	collection_index = parser->device->maxcollection++;  in open_collection()
172 	collection = parser->device->collection + collection_index;  in open_collection()
175 	collection->level = parser->collection_stack_ptr - 1;  in open_collection()
177 		parser->collection_stack[collection->level - 1];  in open_collection()
180 		parser->device->maxapplication++;  in open_collection()
189 static int close_collection(struct hid_parser *parser)  in close_collection()  argument
191 	if (!parser->collection_stack_ptr) {  in close_collection()
192 		hid_err(parser->device, "collection stack underflow\n");  in close_collection()
195 	parser->collection_stack_ptr--;  in close_collection()
204 static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type)  in hid_lookup_collection()  argument
206 	struct hid_collection *collection = parser->device->collection;  in hid_lookup_collection()
209 	for (n = parser->collection_stack_ptr - 1; n >= 0; n--) {  in hid_lookup_collection()
210 		unsigned index = parser->collection_stack[n];  in hid_lookup_collection()
222 static void complete_usage(struct hid_parser *parser, unsigned int index)  in complete_usage()  argument
224 	parser->local.usage[index] &= 0xFFFF;  in complete_usage()
225 	parser->local.usage[index] |=  in complete_usage()
226 		(parser->global.usage_page & 0xFFFF) << 16;  in complete_usage()
233 static int hid_add_usage(struct hid_parser *parser, unsigned usage, u8 size)  in hid_add_usage()  argument
235 	if (parser->local.usage_index >= HID_MAX_USAGES) {  in hid_add_usage()
236 		hid_err(parser->device, "usage index exceeded\n");  in hid_add_usage()
239 	parser->local.usage[parser->local.usage_index] = usage;  in hid_add_usage()
246 		complete_usage(parser, parser->local.usage_index);  in hid_add_usage()
248 	parser->local.usage_size[parser->local.usage_index] = size;  in hid_add_usage()
249 	parser->local.collection_index[parser->local.usage_index] =  in hid_add_usage()
250 		parser->collection_stack_ptr ?  in hid_add_usage()
251 		parser->collection_stack[parser->collection_stack_ptr - 1] : 0;  in hid_add_usage()
252 	parser->local.usage_index++;  in hid_add_usage()
260 static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags)  in hid_add_field()  argument
269 	application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);  in hid_add_field()
271 	report = hid_register_report(parser->device, report_type,  in hid_add_field()
272 				     parser->global.report_id, application);  in hid_add_field()
274 		hid_err(parser->device, "hid_register_report failed\n");  in hid_add_field()
279 	if ((parser->global.logical_minimum < 0 &&  in hid_add_field()
280 		parser->global.logical_maximum <  in hid_add_field()
281 		parser->global.logical_minimum) ||  in hid_add_field()
282 		(parser->global.logical_minimum >= 0 &&  in hid_add_field()
283 		(__u32)parser->global.logical_maximum <  in hid_add_field()
284 		(__u32)parser->global.logical_minimum)) {  in hid_add_field()
286 			parser->global.logical_minimum,  in hid_add_field()
287 			parser->global.logical_maximum);  in hid_add_field()
292 	report->size += parser->global.report_size * parser->global.report_count;  in hid_add_field()
296 		hid_err(parser->device, "report is too long\n");  in hid_add_field()
300 	if (!parser->local.usage_index) /* Ignore padding fields */  in hid_add_field()
303 	usages = max_t(unsigned, parser->local.usage_index,  in hid_add_field()
304 				 parser->global.report_count);  in hid_add_field()
310 	field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL);  in hid_add_field()
311 	field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL);  in hid_add_field()
317 		if (i >= parser->local.usage_index)  in hid_add_field()
318 			j = parser->local.usage_index - 1;  in hid_add_field()
319 		field->usage[i].hid = parser->local.usage[j];  in hid_add_field()
321 			parser->local.collection_index[j];  in hid_add_field()
330 	field->report_size = parser->global.report_size;  in hid_add_field()
331 	field->report_count = parser->global.report_count;  in hid_add_field()
332 	field->logical_minimum = parser->global.logical_minimum;  in hid_add_field()
333 	field->logical_maximum = parser->global.logical_maximum;  in hid_add_field()
334 	field->physical_minimum = parser->global.physical_minimum;  in hid_add_field()
335 	field->physical_maximum = parser->global.physical_maximum;  in hid_add_field()
336 	field->unit_exponent = parser->global.unit_exponent;  in hid_add_field()
337 	field->unit = parser->global.unit;  in hid_add_field()
370 static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)  in hid_parser_global()  argument
376 		if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {  in hid_parser_global()
377 			hid_err(parser->device, "global environment stack overflow\n");  in hid_parser_global()
381 		memcpy(parser->global_stack + parser->global_stack_ptr++,  in hid_parser_global()
382 			&parser->global, sizeof(struct hid_global));  in hid_parser_global()
387 		if (!parser->global_stack_ptr) {  in hid_parser_global()
388 			hid_err(parser->device, "global environment stack underflow\n");  in hid_parser_global()
392 		memcpy(&parser->global, parser->global_stack +  in hid_parser_global()
393 			--parser->global_stack_ptr, sizeof(struct hid_global));  in hid_parser_global()
397 		parser->global.usage_page = item_udata(item);  in hid_parser_global()
401 		parser->global.logical_minimum = item_sdata(item);  in hid_parser_global()
405 		if (parser->global.logical_minimum < 0)  in hid_parser_global()
406 			parser->global.logical_maximum = item_sdata(item);  in hid_parser_global()
408 			parser->global.logical_maximum = item_udata(item);  in hid_parser_global()
412 		parser->global.physical_minimum = item_sdata(item);  in hid_parser_global()
416 		if (parser->global.physical_minimum < 0)  in hid_parser_global()
417 			parser->global.physical_maximum = item_sdata(item);  in hid_parser_global()
419 			parser->global.physical_maximum = item_udata(item);  in hid_parser_global()
429 			parser->global.unit_exponent = hid_snto32(raw_value, 4);  in hid_parser_global()
431 			parser->global.unit_exponent = raw_value;  in hid_parser_global()
435 		parser->global.unit = item_udata(item);  in hid_parser_global()
439 		parser->global.report_size = item_udata(item);  in hid_parser_global()
440 		if (parser->global.report_size > 256) {  in hid_parser_global()
441 			hid_err(parser->device, "invalid report_size %d\n",  in hid_parser_global()
442 					parser->global.report_size);  in hid_parser_global()
448 		parser->global.report_count = item_udata(item);  in hid_parser_global()
449 		if (parser->global.report_count > HID_MAX_USAGES) {  in hid_parser_global()
450 			hid_err(parser->device, "invalid report_count %d\n",  in hid_parser_global()
451 					parser->global.report_count);  in hid_parser_global()
457 		parser->global.report_id = item_udata(item);  in hid_parser_global()
458 		if (parser->global.report_id == 0 ||  in hid_parser_global()
459 		    parser->global.report_id >= HID_MAX_IDS) {  in hid_parser_global()
460 			hid_err(parser->device, "report_id %u is invalid\n",  in hid_parser_global()
461 				parser->global.report_id);  in hid_parser_global()
467 		hid_err(parser->device, "unknown global tag 0x%x\n", item->tag);  in hid_parser_global()
476 static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)  in hid_parser_local()  argument
494 			if (parser->local.delimiter_depth != 0) {  in hid_parser_local()
495 				hid_err(parser->device, "nested delimiters\n");  in hid_parser_local()
498 			parser->local.delimiter_depth++;  in hid_parser_local()
499 			parser->local.delimiter_branch++;  in hid_parser_local()
501 			if (parser->local.delimiter_depth < 1) {  in hid_parser_local()
502 				hid_err(parser->device, "bogus close delimiter\n");  in hid_parser_local()
505 			parser->local.delimiter_depth--;  in hid_parser_local()
511 		if (parser->local.delimiter_branch > 1) {  in hid_parser_local()
516 		return hid_add_usage(parser, data, item->size);  in hid_parser_local()
520 		if (parser->local.delimiter_branch > 1) {  in hid_parser_local()
525 		parser->local.usage_minimum = data;  in hid_parser_local()
530 		if (parser->local.delimiter_branch > 1) {  in hid_parser_local()
535 		count = data - parser->local.usage_minimum;  in hid_parser_local()
536 		if (count + parser->local.usage_index >= HID_MAX_USAGES) {  in hid_parser_local()
541 			if (dev_name(&parser->device->dev))  in hid_parser_local()
542 				hid_warn(parser->device,  in hid_parser_local()
544 			data = HID_MAX_USAGES - parser->local.usage_index +  in hid_parser_local()
545 				parser->local.usage_minimum - 1;  in hid_parser_local()
547 				hid_err(parser->device,  in hid_parser_local()
553 		for (n = parser->local.usage_minimum; n <= data; n++)  in hid_parser_local()
554 			if (hid_add_usage(parser, n, item->size)) {  in hid_parser_local()
575 static void hid_concatenate_last_usage_page(struct hid_parser *parser)  in hid_concatenate_last_usage_page()  argument
581 	if (!parser->local.usage_index)  in hid_concatenate_last_usage_page()
584 	usage_page = parser->global.usage_page;  in hid_concatenate_last_usage_page()
590 	for (i = parser->local.usage_index - 1; i >= 0; i--) {  in hid_concatenate_last_usage_page()
591 		if (parser->local.usage_size[i] > 2)  in hid_concatenate_last_usage_page()
595 		current_page = parser->local.usage[i] >> 16;  in hid_concatenate_last_usage_page()
599 		complete_usage(parser, i);  in hid_concatenate_last_usage_page()
607 static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)  in hid_parser_main()  argument
612 	hid_concatenate_last_usage_page(parser);  in hid_parser_main()
618 		ret = open_collection(parser, data & 0xff);  in hid_parser_main()
621 		ret = close_collection(parser);  in hid_parser_main()
624 		ret = hid_add_field(parser, HID_INPUT_REPORT, data);  in hid_parser_main()
627 		ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);  in hid_parser_main()
630 		ret = hid_add_field(parser, HID_FEATURE_REPORT, data);  in hid_parser_main()
633 		hid_warn(parser->device, "unknown main item tag 0x%x\n", item->tag);  in hid_parser_main()
637 	memset(&parser->local, 0, sizeof(parser->local));	/* Reset the local parser environment */  in hid_parser_main()
646 static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)  in hid_parser_reserved()  argument
782 static void hid_scan_input_usage(struct hid_parser *parser, u32 usage)  in hid_scan_input_usage()  argument
784 	struct hid_device *hid = parser->device;  in hid_scan_input_usage()
790 static void hid_scan_feature_usage(struct hid_parser *parser, u32 usage)  in hid_scan_feature_usage()  argument
792 	if (usage == 0xff0000c5 && parser->global.report_count == 256 &&  in hid_scan_feature_usage()
793 	    parser->global.report_size == 8)  in hid_scan_feature_usage()
794 		parser->scan_flags |= HID_SCAN_FLAG_MT_WIN_8;  in hid_scan_feature_usage()
796 	if (usage == 0xff0000c6 && parser->global.report_count == 1 &&  in hid_scan_feature_usage()
797 	    parser->global.report_size == 8)  in hid_scan_feature_usage()
798 		parser->scan_flags |= HID_SCAN_FLAG_MT_WIN_8;  in hid_scan_feature_usage()
801 static void hid_scan_collection(struct hid_parser *parser, unsigned type)  in hid_scan_collection()  argument
803 	struct hid_device *hid = parser->device;  in hid_scan_collection()
806 	if (((parser->global.usage_page << 16) == HID_UP_SENSOR) &&  in hid_scan_collection()
815 	if ((parser->global.usage_page << 16) == HID_UP_GENDESK)  in hid_scan_collection()
816 		for (i = 0; i < parser->local.usage_index; i++)  in hid_scan_collection()
817 			if (parser->local.usage[i] == HID_GD_POINTER)  in hid_scan_collection()
818 				parser->scan_flags |= HID_SCAN_FLAG_GD_POINTER;  in hid_scan_collection()
820 	if ((parser->global.usage_page << 16) >= HID_UP_MSVENDOR)  in hid_scan_collection()
821 		parser->scan_flags |= HID_SCAN_FLAG_VENDOR_SPECIFIC;  in hid_scan_collection()
823 	if ((parser->global.usage_page << 16) == HID_UP_GOOGLEVENDOR)  in hid_scan_collection()
824 		for (i = 0; i < parser->local.usage_index; i++)  in hid_scan_collection()
825 			if (parser->local.usage[i] ==  in hid_scan_collection()
827 				parser->device->group =  in hid_scan_collection()
831 static int hid_scan_main(struct hid_parser *parser, struct hid_item *item)  in hid_scan_main()  argument
836 	hid_concatenate_last_usage_page(parser);  in hid_scan_main()
842 		hid_scan_collection(parser, data & 0xff);  in hid_scan_main()
850 		for (i = 0; i < parser->local.usage_index; i++)  in hid_scan_main()
851 			hid_scan_input_usage(parser, parser->local.usage[i]);  in hid_scan_main()
856 		for (i = 0; i < parser->local.usage_index; i++)  in hid_scan_main()
857 			hid_scan_feature_usage(parser, parser->local.usage[i]);  in hid_scan_main()
862 	memset(&parser->local, 0, sizeof(parser->local));  in hid_scan_main()
874 	struct hid_parser *parser;  in hid_scan_report()  local
878 	static int (*dispatch_type[])(struct hid_parser *parser,  in hid_scan_report()
886 	parser = vzalloc(sizeof(struct hid_parser));  in hid_scan_report()
887 	if (!parser)  in hid_scan_report()
890 	parser->device = hid;  in hid_scan_report()
899 		dispatch_type[item.type](parser, &item);  in hid_scan_report()
904 	if ((parser->scan_flags & HID_SCAN_FLAG_MT_WIN_8) &&  in hid_scan_report()
917 			if ((parser->scan_flags & HID_SCAN_FLAG_VENDOR_SPECIFIC)  in hid_scan_report()
918 			    && (parser->scan_flags & HID_SCAN_FLAG_GD_POINTER))  in hid_scan_report()
927 	kfree(parser->collection_stack);  in hid_scan_report()
928 	vfree(parser);  in hid_scan_report()
1197 	struct hid_parser *parser;  in hid_open_report()  local
1205 	static int (*dispatch_type[])(struct hid_parser *parser,  in hid_open_report()
1238 	parser = vzalloc(sizeof(struct hid_parser));  in hid_open_report()
1239 	if (!parser) {  in hid_open_report()
1244 	parser->device = device;  in hid_open_report()
1265 		if (dispatch_type[item.type](parser, &item)) {  in hid_open_report()
1273 			if (parser->collection_stack_ptr) {  in hid_open_report()
1277 			if (parser->local.delimiter_depth) {  in hid_open_report()
1288 			kfree(parser->collection_stack);  in hid_open_report()
1289 			vfree(parser);  in hid_open_report()
1299 	kfree(parser->collection_stack);  in hid_open_report()
1301 	vfree(parser);  in hid_open_report()