Hello,
I tried touchscreen with kernel 4.15 (ubuntu) and hid-multitouch gives
me BTN_TOOL_PEN and BTN_TOUCH events, so both hovering and touching work.
Back to kernel 5.4 I noticed that I don't see BTN_TOUCH among supported
events, despite of this (hid-multitouch/mt_touch_input_mapping):
case HID_DG_TIPSWITCH:
if (field->application != HID_GD_SYSTEM_MULTIAXIS) {
input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
}
MT_STORE_FIELD(tip_state);
return 1;
But after I added:
case HID_DG_ERASER: // comes from my device
return -1;
BTN_TOUCH appeared again in supported events, and I see it appearing in
evtest output in the moments of start/stop hovering. I would like to see
BTN_TOOL_PEN instead...
Please, could you suggest, where could be a problem?
Thank you very much!
Dmitry Mastykin
On 7/30/20 7:23 PM, Dmitry Mastykin wrote:
Hello all,
I'm using a notebook with Goodix gt7385p touchscreen controller in HID
Protocol Device (I2C bus) mode.
hid-multitouch driver is servicing this device. I added this to be sure
the quirks set:
{ .driver_data = MT_CLS_WIN_8_DUAL,
HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
I2C_VENDOR_ID_GOODIX,
I2C_DEVICE_ID_GOODIX_0113) },
The problem is that hovering works as touch, and UI menus and buttons
are activated before I touch the panel with stylus. I attach evtest
output of touching panel be stylus and removing stylus away.
Trying a wacom pen tablet, borrowed from my daughter, I see that they
use such a sequence:
EV_KEY BTN_TOOL_PEN 1 - start hovering here
EV_KEY BTN_TOUCH 1 - start touching
EV_KEY BTN_TOUCH 0 - stop touching
EV_KEY BTN_TOOL_PEN 0 - stop hovering
Just to make the touchscreen working I tried to add BTN_TOUCH reports to
hid-multitouch for my device. But as soon as I add
input_set_capability(hi->input, EV_KEY, BTN_TOUCH), I see BTN_TOUCH 0 /
BTN_TOUCH 1 pair in every report.
So 2 questions that I have:
1) is the sequence in evtest.txt correct?
2) who may report BTN_TOUCH 0/1 pairs when BTN_TOUCH capability is
added? I tried to search with debug messages in hid-input.c and
hid-multitouch.c but without success.
Thank you in advance!
Dmitry Mastykin
Here is the citation from dmesg:
----------------------------------------------------------------------
[ 5.032956] i2c_hid i2c-GXTP7380:00: i2c-GXTP7380:00 supply vdd not
found, using dummy regulator
[ 5.032979] i2c_hid i2c-GXTP7380:00: i2c-GXTP7380:00 supply vddl not
found, using dummy regulator [ 5.088245] input:
GXTP7380:00 27C6:0113 Touchscreen as
/devices/pci0000:00/0000:00:17.0/i2c_designware.4/i2c-9/i
2c-GXTP7380:00/0018:27C6:0113.0001/input/input14
[ 5.109607] input:
GXTP7380:00 27C6:0113 as
/devices/pci0000:00/0000:00:17.0/i2c_designware.4/i2c-9/i2c-GXTP7380:
00/0018:27C6:0113.0001/input/input15
[ 5.112486] input:
GXTP7380:00 27C6:0113 as
/devices/pci0000:00/0000:00:17.0/i2c_designware.4/i2c-9/i2c-GXTP7380:
00/0018:27C6:0113.0001/input/input16
[ 5.112561] hid-generic
0018:27C6:0113.0001: input,hidraw0: I2C HID v1.00 Device [GXTP7380:00
27C6:0113] on i2c-G
XTP7380:00 [ 6.417241]
input: GXTP7380:00 27C6:0113 as
/devices/pci0000:00/0000:00:17.0/i2c_designware.4/i2c-9/i2c-GXTP7380:
00/0018:27C6:0113.0001/input/input20
[ 6.417833] input:
GXTP7380:00 27C6:0113 Stylus as
/devices/pci0000:00/0000:00:17.0/i2c_designware.4/i2c-9/i2c-GX
TP7380:00/0018:27C6:0113.0001/input/input21
[ 6.417902] input:
GXTP7380:00 27C6:0113 UNKNOWN as
/devices/pci0000:00/0000:00:17.0/i2c_designware.4/i2c-9/i2c-G
XTP7380:00/0018:27C6:0113.0001/input/input22
[ 6.417973]
hid-multitouch 0018:27C6:0113.0001: input,hidraw0: I2C HID v1.00 Device
[GXTP7380:00 27C6:0113] on i2
c-GXTP7380:00
evtest.txt
Input driver version is 1.0.1
Input device ID: bus 0x18 vendor 0x27c6 product 0x113 version 0x100
Input device name: "GXTP7380:00 27C6:0113 Stylus"
Supported events:
Event type 0 (EV_SYN)
Event type 1 (EV_KEY)
Event type 3 (EV_ABS)
Event code 47 (ABS_MT_SLOT)
Value 0
Min 0
Max 9
Event code 53 (ABS_MT_POSITION_X)
Value 0
Min 0
Max 960
Resolution 4
Event code 54 (ABS_MT_POSITION_Y)
Value 0
Min 0
Max 540
Resolution 3
Event code 57 (ABS_MT_TRACKING_ID)
Value 0
Min 0
Max 65535
Event code 58 (ABS_MT_PRESSURE)
Value 0
Min 0
Max 1023
Event code 59 (ABS_MT_DISTANCE)
Value 0
Min 0
Max 1
Properties:
Property type 1 (INPUT_PROP_DIRECT)
Testing ... (interrupt to exit)
Event: time 1596124249.087943, type 3 (EV_ABS), code 57
(ABS_MT_TRACKING_ID), value 0
Event: time 1596124249.087943, type 3 (EV_ABS), code 53
(ABS_MT_POSITION_X), value 599
Event: time 1596124249.087943, type 3 (EV_ABS), code 54
(ABS_MT_POSITION_Y), value 340
Event: time 1596124249.087943, type 3 (EV_ABS), code 59
(ABS_MT_DISTANCE), value 1
Event: time 1596124249.087943, type 3 (EV_ABS), code 58
(ABS_MT_PRESSURE), value 139
Event: time 1596124249.087943, -------------- SYN_REPORT ------------
Event: time 1596124249.097234, type 3 (EV_ABS), code 59
(ABS_MT_DISTANCE), value 0
Event: time 1596124249.097234, type 3 (EV_ABS), code 58
(ABS_MT_PRESSURE), value 201
Event: time 1596124249.097234, -------------- SYN_REPORT ------------
Event: time 1596124249.101803, type 3 (EV_ABS), code 58
(ABS_MT_PRESSURE), value 260
Event: time 1596124249.101803, -------------- SYN_REPORT ------------
Event: time 1596124249.112267, type 3 (EV_ABS), code 58
(ABS_MT_PRESSURE), value 289
Event: time 1596124249.112267, -------------- SYN_REPORT ------------
Event: time 1596124249.116674, type 3 (EV_ABS), code 58
(ABS_MT_PRESSURE), value 266
Event: time 1596124249.116674, -------------- SYN_REPORT ------------
Event: time 1596124249.127249, type 3 (EV_ABS), code 53
(ABS_MT_POSITION_X), value 598
Event: time 1596124249.127249, type 3 (EV_ABS), code 58
(ABS_MT_PRESSURE), value 223
Event: time 1596124249.127249, -------------- SYN_REPORT ------------
Event: time 1596124249.131745, type 3 (EV_ABS), code 54
(ABS_MT_POSITION_Y), value 339
Event: time 1596124249.131745, type 3 (EV_ABS), code 58
(ABS_MT_PRESSURE), value 181
Event: time 1596124249.131745, -------------- SYN_REPORT ------------
Event: time 1596124249.142256, type 3 (EV_ABS), code 53
(ABS_MT_POSITION_X), value 597
Event: time 1596124249.142256, type 3 (EV_ABS), code 54
(ABS_MT_POSITION_Y), value 338
Event: time 1596124249.142256, type 3 (EV_ABS), code 58
(ABS_MT_PRESSURE), value 161
Event: time 1596124249.142256, -------------- SYN_REPORT ------------
Event: time 1596124249.146603, type 3 (EV_ABS), code 53
(ABS_MT_POSITION_X), value 596
Event: time 1596124249.146603, type 3 (EV_ABS), code 54
(ABS_MT_POSITION_Y), value 337
Event: time 1596124249.146603, type 3 (EV_ABS), code 59
(ABS_MT_DISTANCE), value 1
Event: time 1596124249.146603, type 3 (EV_ABS), code 58
(ABS_MT_PRESSURE), value 0
Event: time 1596124249.146603, -------------- SYN_REPORT ------------
Event: time 1596124249.172060, type 3 (EV_ABS), code 54
(ABS_MT_POSITION_Y), value 336
Event: time 1596124249.172060, -------------- SYN_REPORT ------------
Event: time 1596124249.202273, type 3 (EV_ABS), code 53
(ABS_MT_POSITION_X), value 595
Event: time 1596124249.202273, type 3 (EV_ABS), code 54
(ABS_MT_POSITION_Y), value 335
Event: time 1596124249.202273, -------------- SYN_REPORT ------------
Event: time 1596124249.206695, type 3 (EV_ABS), code 54
(ABS_MT_POSITION_Y), value 334
Event: time 1596124249.206695, -------------- SYN_REPORT ------------
Event: time 1596124249.217088, type 3 (EV_ABS), code 54
(ABS_MT_POSITION_Y), value 333
Event: time 1596124249.217088, -------------- SYN_REPORT ------------
Event: time 1596124249.232096, type 3 (EV_ABS), code 54
(ABS_MT_POSITION_Y), value 331
Event: time 1596124249.232096, -------------- SYN_REPORT ------------
Event: time 1596124249.236768, type 3 (EV_ABS), code 54
(ABS_MT_POSITION_Y), value 330
Event: time 1596124249.236768, -------------- SYN_REPORT ------------
Event: time 1596124249.247150, type 3 (EV_ABS), code 54
(ABS_MT_POSITION_Y), value 329
Event: time 1596124249.247150, -------------- SYN_REPORT ------------
Event: time 1596124249.251871, type 3 (EV_ABS), code 54
(ABS_MT_POSITION_Y), value 328
Event: time 1596124249.251871, -------------- SYN_REPORT ------------
Event: time 1596124249.262288, type 3 (EV_ABS), code 57
(ABS_MT_TRACKING_ID), value -1
Event: time 1596124249.262288, -------------- SYN_REPORT ------------
