i2p/haiku-beta6
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ps/2 elantech: add finger hack with TODO to remove it later

Browse Source 
Add finger hack to simulate statuses on finger width based
on synaptic hardware and TODO to remove this in the future
when those flags are splited out from finger with values
on all devices and on user space.

Change-Id: Iecba7612ad7041bb948132754c4ea263c9b331ac
Reviewed-on: https://review.haiku-os.org/c/haiku/+/9957
Tested-by: Commit checker robot <[email protected]>
Reviewed-by: Adrien Destugues <[email protected]>
This commit is contained in:
Samuel Rodríguez Pérez
2026-01-02 11:01:29 +00:00
committed by Adrien Destugues
parent 494ae23c3d
commit 2c81764326
1 changed files with 42 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/add-ons/kernel/bus_managers/ps2/ps2_elantech.cpp
+42
View File
@@ -23,6 +23,8 @@
#include <keyboard_mouse_driver.h>
#include <util/BitUtils.h>
#include "ps2_service.h"
@@ -104,6 +106,44 @@ elantech_process_packet_trackpoint(elantech_cookie *cookie, mouse_movement *_mov
uint8 packet[PS2_PACKET_ELANTECH]);
static inline void
finger_width_hack(touchpad_movement *event)
{
// TODO: Improve fingerWidth computation by removing hack and updating other drivers.
// FingerWidth values as per Synaptic driver "Finger width value".
// This is currently used that way by movement_maker.cpp so keep this hack as of now.
// Comments from FreeBSD psm.c driver for Synaptic protocol below:
/*
* Pressure value.
* Interpretation:
* z = 0 No finger contact
* z = 10 Finger hovering near the pad
* z = 30 Very light finger contact
* z = 80 Normal finger contact
* z = 110 Very heavy finger contact
* z = 200 Finger lying flat on pad surface
* z = 255 Maximum reportable Z
*/
/*
* Finger width value
* Interpretation:
* w = 0 Two finger on the pad (capMultiFinger needed)
* w = 1 Three or more fingers (capMultiFinger needed)
* w = 2 Pen (instead of finger) (capPen needed)
* w = 3 Reserved (passthrough?)
* w = 4-7 Finger of normal width (capPalmDetect needed)
* w = 8-14 Very wide finger or palm (capPalmDetect needed)
* w = 15 Maximum reportable width (capPalmDetect needed)
*/
if (event->fingerWidth < 4)
event->fingerWidth = 4;
if (count_set_bits(event->fingers) == 2)
event->fingerWidth = 0;
else if (count_set_bits(event->fingers) > 2)
event->fingerWidth = 1;
}
/* Common legend
* L: Left mouse button pressed
* R: Right mouse button pressed
@@ -164,6 +204,8 @@ get_elantech_movement(elantech_cookie *cookie, touchpad_read *_read)
}
if (status == B_OK) {
_read->event = MS_READ_TOUCHPAD;
// TODO: remove this hack
finger_width_hack(&event);
_read->u.touchpad = event;
}
}