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1523d8bb2e
The kernel fuzz handling is buggy, especially when we want to rely on the fuzz value for our hysteresis. But since this is a hw property and (at least sometimes) set by the driver, we can't make this a pure libinput hwdb set either. So our workaround is: * extract the (non-zero) fuzz into a udev property so we don't lose it * set the fuzz to 0 to disable the in-kernel hysteresis * overwrite our internal absinfo with the property fuzz This way we get to use the hw-specified fuzz without having the kernel muck around with it. We also get to use the EVDEV_ABS_ values in 60-evdev.hwdb to override a driver-set fuzz. Two drawbacks: - we're resetting the kernel fuzz to 0, this affects any other users of the device node. That's probably a minor impact only. - we can only save this in a udev property there's a risk of this information getting lost when playing around with udev rules. That too should be a minor issue. https://bugs.freedesktop.org/show_bug.cgi?id=105303 Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
51 lines
1.8 KiB
Text
51 lines
1.8 KiB
Text
# Do not edit this file, it will be overwritten on update
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#
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# This file contains lookup rules for libinput model-specific quirks.
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# The contents of this file are a contract between libinput, udev rules and
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# the hwdb.
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# IT IS NOT A STABLE API AND SUBJECT TO CHANGE AT ANY TIME
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#
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# The hwdb database is in:
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# 90-libinput-model-quirks.hwdb
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ACTION!="add|change", GOTO="libinput_model_quirks_end"
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KERNEL!="event*", GOTO="libinput_model_quirks_end"
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# Touchpad firmware detection, two-stage process.
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# First, run the program and import the LIBINPUT_MODEL_FIRMWARE_VERSION
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# environment (if any)
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KERNELS=="*input*", \
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IMPORT{program}="@UDEV_TEST_PATH@libinput-model-quirks %S%p"
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# Second, match on anything with that env set and import from the hwdb
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KERNELS=="*input*", \
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ENV{ID_INPUT_TOUCHPAD}=="1", \
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ENV{LIBINPUT_MODEL_FIRMWARE_VERSION}!="", \
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IMPORT{builtin}="hwdb 'libinput:name:$attr{name}:fwversion:$env{LIBINPUT_MODEL_FIRMWARE_VERSION}'"
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# End of touchpad firmware detection
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# libinput:touchpad:<modalias>
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ENV{ID_INPUT_TOUCHPAD}=="1", \
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IMPORT{builtin}="hwdb --subsystem=input --lookup-prefix=libinput:touchpad:"
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# libinput:tablet:<modalias>
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ENV{ID_INPUT_TABLET}=="1", \
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IMPORT{builtin}="hwdb --subsystem=input --lookup-prefix=libinput:tablet:"
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# libinput:mouse:<modalias>
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ENV{ID_INPUT_MOUSE}=="1", \
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IMPORT{builtin}="hwdb --subsystem=input --lookup-prefix=libinput:mouse:"
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# libinput:touchpad:<modalias>
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ENV{ID_INPUT_KEYBOARD}=="1", \
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IMPORT{builtin}="hwdb --subsystem=input --lookup-prefix=libinput:keyboard:"
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# libinput:name:<name>:dmi:<dmi string>
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KERNELS=="input*", \
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IMPORT{builtin}="hwdb 'libinput:name:$attr{name}:$attr{[dmi/id]modalias}'"
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# libinput:name:<name>:dt:<device-tree string>
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KERNELS=="input*", \
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IMPORT{builtin}="hwdb 'libinput:name:$attr{name}:dt:$attr{[devicetree/base]model}'"
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LABEL="libinput_model_quirks_end"
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