shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-04 18:19:28 +09:00
Code Issues Packages Projects Releases Wiki Activity

Input: elantech - mark protocols v2 and v3 as semi-mt

Browse Source 
commit 6544a1df11 upstream.

When using a protocol v2 or v3 hardware, elantech uses the function
elantech_report_semi_mt_data() to report data. This devices are rather
creepy because if num_finger is 3, (x2,y2) is (0,0). Yes, only one valid
touch is reported.

Anyway, userspace (libinput) is now confused by these (0,0) touches,
and detect them as palm, and rejects them.

Commit 3c0213d17a ("Input: elantech - fix semi-mt protocol for v3 HW")
was sufficient enough for xf86-input-synaptics and libinput before it has
palm rejection. Now we need to actually tell libinput that this device is
a semi-mt one and it should not rely on the actual values of the 2 touches.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Benjamin Tissoires
2016-01-11 17:35:38 -08:00
committed by Greg Kroah-Hartman
parent d1f8217a9a
commit 1d70d30a5f
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/input/mouse/elantech.c
View File

@@ -1222,7 +1222,7 @@ static int elantech_set_input_params(struct psmouse *psmouse)
input_set_abs_params(dev, ABS_TOOL_WIDTH, ETP_WMIN_V2,
ETP_WMAX_V2, 0, 0);
}
input_mt_init_slots(dev, 2, 0);
input_mt_init_slots(dev, 2, INPUT_MT_SEMI_MT);
input_set_abs_params(dev, ABS_MT_POSITION_X, x_min, x_max, 0, 0);
input_set_abs_params(dev, ABS_MT_POSITION_Y, y_min, y_max, 0, 0);
break;