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quirks: add a default resolution for Huion devices

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The Inspiroy 2S H641P in default mode (without hid-uclogic support) says
the pen interface has a Logical Maximum of 32767. Over the 160x100mm
active surface this is ca 205x328 units/mm. This isn't correct across all
devices but let's use it as fallback value so the tablets work out of
the box.
It's hard to set these tablets via 60-evdev.hwdb otherwise because most
Huion tablets share a few PIDs only.

Note: this doesn't overwrite the kernel resolution it merely provides a
fallback where no kernel resolution is set.

The firmware report descriptor does set a physical range (2048) but it
sets it in cubic inch which is ignored by the kernel:

  # 0x65, 0x33,      //     Unit (EnglishLinear: in³)             48

Part-of: <https://gitlab.freedesktop.org/libinput/libinput/-/merge_requests/1004>
This commit is contained in:
Peter Hutterer 2024-05-23 15:17:24 +10:00
parent fe3175748a
commit f1792dec46
1 changed files with 7 additions and 0 deletions
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7
quirks/30-vendor-huion.quirks Normal file
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# Do not edit this file, it will be overwritten on update
# This will match several vendors that all
# re-use the same vendor ID 256C.
[Huion/Gaomon Tablets]
MatchVendor=0x256C
AttrResolutionHint=205x328