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authorBenjamin Tissoires <benjamin.tissoires@gmail.com>2012-11-14 16:59:17 +0100
committerJiri Kosina <jkosina@suse.cz>2012-11-15 10:08:40 +0100
commit54f4c0c3e9d9ad50bf58a4f7c2bbdfb3fa4ab3a7 (patch)
tree3542c485b9e262fb10129e377036ba90c01bb7b1 /drivers/hid
parentf262d1fa2c651a5e2f92b6aee8779597631cd5d4 (diff)
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HID: multitouch: support arrays for the split of the touches in a report
Win8 certification introduced the ability to transmit two X and two Y per touch. The specification precises that it must be used in an array. This test guarantees that we split the touches on the last element in this array. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com> Reviewed-by: Henrik Rydberg <rydberg@euromail.se> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid')
-rw-r--r--drivers/hid/hid-multitouch.c15
1 files changed, 9 insertions, 6 deletions
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index 3687f797b731..3d2e6bbb0046 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -576,12 +576,15 @@ static int mt_event(struct hid_device *hid, struct hid_field *field,
return 0;
}
- if (usage->hid == td->last_slot_field)
- mt_complete_slot(td, field->hidinput->input);
-
- if (field->index == td->last_field_index
- && td->num_received >= td->num_expected)
- mt_sync_frame(td, field->hidinput->input);
+ if (usage->usage_index + 1 == field->report_count) {
+ /* we only take into account the last report. */
+ if (usage->hid == td->last_slot_field)
+ mt_complete_slot(td, field->hidinput->input);
+
+ if (field->index == td->last_field_index
+ && td->num_received >= td->num_expected)
+ mt_sync_frame(td, field->hidinput->input);
+ }
}