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| author | Rafi Rubin <rafi@seas.upenn.edu> | 2010-03-10 16:10:28 +0100 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2010-03-10 16:10:28 +0100 |
| commit | 2886539d5e649c22a6d2107eb431d3bee81e0e6d (patch) | |
| tree | 3c552a2f31654171553a55bf2db45ec468b7c5d1 | |
| parent | eff7f270e9a05688066f40589d7b44e1dcf335dc (diff) | |
| download | linux-2886539d5e649c22a6d2107eb431d3bee81e0e6d.tar.bz2 | |
HID: ntrig: fix touch events
This reinstates the lost unpressing of BTN_TOUCH. To prevent undesireably
touch toggles this also deals with tip switch events.
Added a trap to prevent going out of bounds for hidinputs with empty reports.
Clear bits of unused buttons which result in misidentification.
Signed-off-by: Rafi Rubin <rafi@seas.upenn.edu>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| -rw-r--r-- | drivers/hid/hid-ntrig.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/hid/hid-ntrig.c b/drivers/hid/hid-ntrig.c index 3234c729a895..edcc0c4247bb 100644 --- a/drivers/hid/hid-ntrig.c +++ b/drivers/hid/hid-ntrig.c @@ -140,6 +140,9 @@ static int ntrig_event (struct hid_device *hid, struct hid_field *field, nd->reading_mt = 1; nd->first_contact_confidence = 0; break; + case HID_DG_TIPSWITCH: + /* Prevent emission of touch until validated */ + return 1; case HID_DG_CONFIDENCE: nd->confidence = value; break; @@ -259,6 +262,7 @@ static int ntrig_event (struct hid_device *hid, struct hid_field *field, BTN_TOOL_TRIPLETAP, 0); input_report_key(input, BTN_TOOL_QUADTAP, 0); + input_report_key(input, BTN_TOUCH, 0); } break; @@ -308,13 +312,20 @@ static int ntrig_probe(struct hid_device *hdev, const struct hid_device_id *id) list_for_each_entry(hidinput, &hdev->inputs, list) { + if (hidinput->report->maxfield < 1) + continue; + input = hidinput->input; switch (hidinput->report->field[0]->application) { case HID_DG_PEN: input->name = "N-Trig Pen"; break; case HID_DG_TOUCHSCREEN: + /* These keys are redundant for fingers, clear them + * to prevent incorrect identification */ __clear_bit(BTN_TOOL_PEN, input->keybit); + __clear_bit(BTN_TOOL_FINGER, input->keybit); + __clear_bit(BTN_0, input->keybit); /* * A little something special to enable * two and three finger taps. |