diff options
Diffstat (limited to 'drivers/hid/hid-core.c')
| -rw-r--r-- | drivers/hid/hid-core.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c index ddd95f3e33c..660dce96416 100644 --- a/drivers/hid/hid-core.c +++ b/drivers/hid/hid-core.c @@ -685,6 +685,13 @@ static void hid_scan_input_usage(struct hid_parser *parser, u32 usage) hid->group = HID_GROUP_MULTITOUCH; } +static void hid_scan_feature_usage(struct hid_parser *parser, u32 usage) +{ + if (usage == 0xff0000c5 && parser->global.report_count == 256 && + parser->global.report_size == 8) + parser->scan_flags |= HID_SCAN_FLAG_MT_WIN_8; +} + static void hid_scan_collection(struct hid_parser *parser, unsigned type) { struct hid_device *hid = parser->device; @@ -714,6 +721,8 @@ static int hid_scan_main(struct hid_parser *parser, struct hid_item *item) case HID_MAIN_ITEM_TAG_OUTPUT: break; case HID_MAIN_ITEM_TAG_FEATURE: + for (i = 0; i < parser->local.usage_index; i++) + hid_scan_feature_usage(parser, parser->local.usage[i]); break; } @@ -757,6 +766,13 @@ static int hid_scan_report(struct hid_device *hid) while ((start = fetch_item(start, end, &item)) != NULL) dispatch_type[item.type](parser, &item); + /* + * Handle special flags set during scanning. + */ + if ((parser->scan_flags & HID_SCAN_FLAG_MT_WIN_8) && + (hid->group == HID_GROUP_MULTITOUCH)) + hid->group = HID_GROUP_MULTITOUCH_WIN_8; + vfree(parser); return 0; } |