https://bugs.freedesktop.org/show_bug.cgi?id=100243
--- Comment #3 from Andrew Duggan <[email protected]> ---
As you may have seen ABS_MT_TOUCH_MAJOR/MINOR are set based on values that the
firmware reports W/X and W/Y. The W is a representation of width, but it
doesn't actually correspond with any sort of units.
Older devices which use RMI4 function 11 report both W values in a single byte.
Each value being 4 bits. That's why the max is set to 15. Newer devices which
use F12 now have use a byte for each W value. Newer devices should have a
larger max.
The device I used to create the log used F12 which is why the actual values
exceed the max.
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