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sycamore: add Himax touch release patch

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This commit is contained in:
Nicholas Andrew 2026-09-13 12:23:45 -04:00
commit eda967d297
1 changed files with 29 additions and 0 deletions
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29
patches/0001-minuitwrp-himax-touch-release.patch Normal file
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@ -0,0 +1,29 @@
diff --git a/minuitwrp/events.cpp b/minuitwrp/events.cpp
index e497df62..d5780baa 100644
--- a/minuitwrp/events.cpp
+++ b/minuitwrp/events.cpp
@@ -558,7 +558,11 @@ static int vk_modify(struct ev *e, struct input_event *ev)
// We're in a touch release, although some devices will still send positions as well
e->mt_p.x = 0;
e->mt_p.y = 0;
- touchReleaseOnNextSynReport = 1;
+ // Preserve a release already latched by ABS_MT_TRACKING_ID -1.
+ // Valid type-B devices may report zero major/pressure values
+ // after ending the tracking ID but before the same SYN_REPORT.
+ if (touchReleaseOnNextSynReport != 2)
+ touchReleaseOnNextSynReport = 1;
#endif
}
#ifdef _EVENT_LOGGING
@@ -572,7 +576,10 @@ static int vk_modify(struct ev *e, struct input_event *ev)
// We're in a touch release, although some devices will still send positions as well
e->mt_p.x = 0;
e->mt_p.y = 0;
- touchReleaseOnNextSynReport = 1;
+ // Do not downgrade a release already latched by a negative
+ // tracking ID before this report is synchronized.
+ if (touchReleaseOnNextSynReport != 2)
+ touchReleaseOnNextSynReport = 1;
}
#ifdef _EVENT_LOGGING
printf("EV: %s => EV_ABS ABS_MT_PRESSURE %d\n", e->deviceName, ev->value);