[PATCH v2 04/11] HID: hid-multitouch: support arrays for the split of the touches in a report
From: Benjamin Tissoires <hidden>
Date: 2012-10-26 08:45:01
Also in:
lkml
Subsystem:
hid core layer, the rest · Maintainers:
Jiri Kosina, Benjamin Tissoires, Linus Torvalds
Win8 certification introduced the ability to transmit two X and two Y per touch. The specification precises that it must be in an array, with a report count == 2. This test guarantees that we split the touches on the last element in this array. Signed-off-by: Benjamin Tissoires <redacted> --- drivers/hid/hid-multitouch.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-)
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index 725d155..95562d8 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c@@ -577,12 +577,16 @@ 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_index + 1 == field->report_count) { + /* we only take into account the last report + * of a field if report_count > 1 */ + 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); + } }
--
1.7.11.7